1 =head1 web-lib-funcs.pl
3 Common functions for Webmin CGI scripts. This file gets in-directly included
4 by all scripts that use web-lib.pl.
9 ui_print_header(undef, 'My Module', '');
10 print 'This is Webmin version ',get_webmin_version(),'<p>\n';
19 $ipv6_module_error = $@;
21 use vars qw($user_risk_level $loaded_theme_library $wait_for_input
22 $done_webmin_header $trust_unknown_referers $unsafe_index_cgi
23 %done_foreign_require $webmin_feedback_address
24 $user_skill_level $pragma_no_cache $foreign_args);
26 use vars qw($module_index_name $number_to_month_map $month_to_number_map
27 $umask_already $default_charset $licence_status $os_type
28 $licence_message $script_name $loaded_theme_oo_library
29 $done_web_lib_funcs $os_version $module_index_link
30 $called_from_webmin_core $ipv6_module_error);
32 =head2 read_file(file, &hash, [&order], [lowercase], [split-char])
34 Fill the given hash reference with name=value pairs from a file. The required
37 =item file - The file to head, which must be text with each line like name=value
39 =item hash - The hash reference to add values read from the file to.
41 =item order - If given, an array reference to add names to in the order they were read
43 =item lowercase - If set to 1, names are converted to lower case
45 =item split-char - If set, names and values are split on this character instead of =
51 my $split = defined($_[4]) ? $_[4] : "=";
52 my $realfile = &translate_filename($_[0]);
53 &open_readfile(ARFILE, $_[0]) || return 0;
56 my $hash = index($_, "#");
57 my $eq = index($_, $split);
58 if ($hash != 0 && $eq >= 0) {
59 my $n = substr($_, 0, $eq);
60 my $v = substr($_, $eq+1);
62 $_[1]->{$_[3] ? lc($n) : $n} = $v;
63 push(@{$_[2]}, $n) if ($_[2]);
67 $main::read_file_missing{$realfile} = 0; # It exists now
68 if (defined($main::read_file_cache{$realfile})) {
69 %{$main::read_file_cache{$realfile}} = %{$_[1]};
74 =head2 read_file_cached(file, &hash, [&order], [lowercase], [split-char])
76 Like read_file, but reads from an in-memory cache if the file has already been
77 read in this Webmin script. Recommended, as it behaves exactly the same as
78 read_file, but can be much faster.
83 my $realfile = &translate_filename($_[0]);
84 if (defined($main::read_file_cache{$realfile})) {
86 %{$_[1]} = ( %{$_[1]}, %{$main::read_file_cache{$realfile}} );
89 elsif ($main::read_file_missing{$realfile}) {
90 # Doesn't exist, so don't re-try read
94 # Actually read the file
96 if (&read_file($_[0], \%d, $_[2], $_[3], $_[4])) {
97 %{$main::read_file_cache{$realfile}} = %d;
98 %{$_[1]} = ( %{$_[1]}, %d );
102 # Flag as non-existant
103 $main::read_file_missing{$realfile} = 1;
109 =head2 read_file_cached_with_stat(file, &hash, [&order], [lowercase], [split-char])
111 Like read_file, but reads from an in-memory cache if the file has already been
112 read in this Webmin script AND has not changed.
115 sub read_file_cached_with_stat
117 my $realfile = &translate_filename($_[0]);
118 my $t = $main::read_file_cache_time{$realfile};
119 my @st = stat($realfile);
120 if ($t && $st[9] != $t) {
121 # Changed, invalidate cache
122 delete($main::read_file_cache{$realfile});
124 my $rv = &read_file_cached(@_);
125 $main::read_file_cache_time{$realfile} = $st[9];
129 =head2 write_file(file, &hash, [join-char])
131 Write out the contents of a hash as name=value lines. The parameters are :
133 =item file - Full path to write to
135 =item hash - A hash reference containing names and values to output
137 =item join-char - If given, names and values are separated by this instead of =
143 my $join = defined($_[2]) ? $_[2] : "=";
144 my $realfile = &translate_filename($_[0]);
145 &read_file($_[0], \%old, \@order);
146 &open_tempfile(ARFILE, ">$_[0]");
147 foreach $k (@order) {
148 if (exists($_[1]->{$k})) {
149 (print ARFILE $k,$join,$_[1]->{$k},"\n") ||
150 &error(&text("efilewrite", $realfile, $!));
153 foreach $k (keys %{$_[1]}) {
154 if (!exists($old{$k})) {
155 (print ARFILE $k,$join,$_[1]->{$k},"\n") ||
156 &error(&text("efilewrite", $realfile, $!));
159 &close_tempfile(ARFILE);
160 if (defined($main::read_file_cache{$realfile})) {
161 %{$main::read_file_cache{$realfile}} = %{$_[1]};
163 if (defined($main::read_file_missing{$realfile})) {
164 $main::read_file_missing{$realfile} = 0;
168 =head2 html_escape(string)
170 Converts &, < and > codes in text to HTML entities, and returns the new string.
171 This should be used when including data read from other sources in HTML pages.
180 $tmp =~ s/\"/"/g;
181 $tmp =~ s/\'/'/g;
186 =head2 quote_escape(string, [only-quote])
188 Converts ' and " characters in a string into HTML entities, and returns it.
189 Useful for outputing HTML tag values.
194 my ($tmp, $only) = @_;
195 if ($tmp !~ /\&[a-zA-Z]+;/ && $tmp !~ /\&#/) {
196 # convert &, unless it is part of &#nnn; or &foo;
197 $tmp =~ s/&([^#])/&$1/g;
199 $tmp =~ s/&$/&/g;
200 $tmp =~ s/\"/"/g if ($only eq '' || $only eq '"');
201 $tmp =~ s/\'/'/g if ($only eq '' || $only eq "'");
205 =head2 tempname([filename])
207 Returns a mostly random temporary file name, typically under the /tmp/.webmin
208 directory. If filename is given, this will be the base name used. Otherwise
209 a unique name is selected randomly.
214 my $tmp_base = $gconfig{'tempdir_'.&get_module_name()} ?
215 $gconfig{'tempdir_'.&get_module_name()} :
216 $gconfig{'tempdir'} ? $gconfig{'tempdir'} :
217 $ENV{'TEMP'} ? $ENV{'TEMP'} :
218 $ENV{'TMP'} ? $ENV{'TMP'} :
219 -d "c:/temp" ? "c:/temp" : "/tmp/.webmin";
220 my $tmp_dir = -d $remote_user_info[7] && !$gconfig{'nohometemp'} ?
221 "$remote_user_info[7]/.tmp" :
222 @remote_user_info ? $tmp_base."-".$remote_user :
223 $< != 0 ? $tmp_base."-".getpwuid($<) :
225 if ($gconfig{'os_type'} eq 'windows' || $tmp_dir =~ /^[a-z]:/i) {
226 # On Windows system, just create temp dir if missing
228 mkdir($tmp_dir, 0755) ||
229 &error("Failed to create temp directory $tmp_dir : $!");
233 # On Unix systems, need to make sure temp dir is valid
235 while($tries++ < 10) {
236 my @st = lstat($tmp_dir);
237 last if ($st[4] == $< && (-d _) && ($st[2] & 0777) == 0755);
239 unlink($tmp_dir) || rmdir($tmp_dir) ||
240 system("/bin/rm -rf ".quotemeta($tmp_dir));
242 mkdir($tmp_dir, 0755) || next;
243 chown($<, $(, $tmp_dir);
244 chmod(0755, $tmp_dir);
247 my @st = lstat($tmp_dir);
248 &error("Failed to create temp directory $tmp_dir : uid=$st[4] mode=$st[2]");
252 if (defined($_[0]) && $_[0] !~ /\.\./) {
253 $rv = "$tmp_dir/$_[0]";
256 $main::tempfilecount++;
258 $rv = $tmp_dir."/".int(rand(1000000))."_".
259 $main::tempfilecount."_".$scriptname;
264 =head2 transname([filename])
266 Behaves exactly like tempname, but records the temp file for deletion when the
267 current Webmin script process exits.
272 my $rv = &tempname(@_);
273 push(@main::temporary_files, $rv);
277 =head2 trunc(string, maxlen)
279 Truncates a string to the shortest whole word less than or equal to the
280 given width. Useful for word wrapping.
285 if (length($_[0]) <= $_[1]) {
288 my $str = substr($_[0],0,$_[1]);
297 =head2 indexof(string, value, ...)
299 Returns the index of some value in an array of values, or -1 if it was not
305 for(my $i=1; $i <= $#_; $i++) {
306 if ($_[$i] eq $_[0]) { return $i - 1; }
311 =head2 indexoflc(string, value, ...)
313 Like indexof, but does a case-insensitive match
318 my $str = lc(shift(@_));
319 my @arr = map { lc($_) } @_;
320 return &indexof($str, @arr);
323 =head2 sysprint(handle, [string]+)
325 Outputs some strings to a file handle, but bypassing IO buffering. Can be used
326 as a replacement for print when writing to pipes or sockets.
331 my $fh = &callers_package($_[0]);
332 my $str = join('', @_[1..$#_]);
333 syswrite $fh, $str, length($str);
336 =head2 check_ipaddress(ip)
338 Check if some IPv4 address is properly formatted, returning 1 if so or 0 if not.
343 return $_[0] =~ /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/ &&
344 $1 >= 0 && $1 <= 255 &&
345 $2 >= 0 && $2 <= 255 &&
346 $3 >= 0 && $3 <= 255 &&
347 $4 >= 0 && $4 <= 255;
350 =head2 check_ip6address(ip)
352 Check if some IPv6 address is properly formatted, and returns 1 if so.
357 my @blocks = split(/:/, $_[0]);
358 return 0 if (@blocks == 0 || @blocks > 8);
360 # The address/netmask format is accepted. So we're looking for a "/" to isolate a possible netmask.
361 # After that, we delete the netmask to control the address only format, but we verify whether the netmask
362 # value is in [0;128].
364 my $where = index($blocks[$ib],"/");
367 my $b = substr($blocks[$ib],0,$where);
368 $m = substr($blocks[$ib],$where+1,length($blocks[$ib])-($where+1));
372 # The netmask must take its value in [0;128]
373 return 0 if ($m <0 || $m >128);
375 # Check the different blocks of the address : 16 bits block in hexa notation.
376 # Possibility of 1 empty block or 2 if the address begins with "::".
379 foreach $b (@blocks) {
380 return 0 if ($b ne "" && $b !~ /^[0-9a-f]{1,4}$/i);
381 $empty++ if ($b eq "");
383 return 0 if ($empty > 1 && !($_[0] =~ /^::/ && $empty == 2));
389 =head2 generate_icon(image, title, link, [href], [width], [height], [before-title], [after-title])
391 Prints HTML for an icon image. The parameters are :
393 =item image - URL for the image, like images/foo.gif
395 =item title - Text to appear under the icon
397 =item link - Optional destination for the icon's link
399 =item href - Other HTML attributes to be added to the <a href> for the link
401 =item width - Optional width of the icon
403 =item height - Optional height of the icon
405 =item before-title - HTML to appear before the title link, but which is not actually in the link
407 =item after-title - HTML to appear after the title link, but which is not actually in the link
412 &load_theme_library();
413 if (defined(&theme_generate_icon)) {
414 &theme_generate_icon(@_);
417 my $w = !defined($_[4]) ? "width=48" : $_[4] ? "width=$_[4]" : "";
418 my $h = !defined($_[5]) ? "height=48" : $_[5] ? "height=$_[5]" : "";
419 if ($tconfig{'noicons'}) {
421 print "$_[6]<a href=\"$_[2]\" $_[3]>$_[1]</a>$_[7]\n";
424 print "$_[6]$_[1]$_[7]\n";
428 print "<table border><tr><td width=48 height=48>\n",
429 "<a href=\"$_[2]\" $_[3]><img src=\"$_[0]\" alt=\"\" border=0 ",
430 "$w $h></a></td></tr></table>\n";
431 print "$_[6]<a href=\"$_[2]\" $_[3]>$_[1]</a>$_[7]\n";
434 print "<table border><tr><td width=48 height=48>\n",
435 "<img src=\"$_[0]\" alt=\"\" border=0 $w $h>",
436 "</td></tr></table>\n$_[6]$_[1]$_[7]\n";
442 Converts a string to a form ok for putting in a URL, using % escaping.
448 $rv =~ s/([^A-Za-z0-9])/sprintf("%%%2.2X", ord($1))/ge;
452 =head2 un_urlize(string)
454 Converts a URL-encoded string to it's original contents - the reverse of the
462 $rv =~ s/%(..)/pack("c",hex($1))/ge;
466 =head2 include(filename)
468 Read and output the contents of the given file.
474 open(INCLUDE, &translate_filename($_[0])) || return 0;
482 =head2 copydata(in-handle, out-handle)
484 Read from one file handle and write to another, until there is no more to read.
490 $in = &callers_package($in);
491 $out = &callers_package($out);
493 while(read($in, $buf, 1024) > 0) {
494 (print $out $buf) || return 0;
499 =head2 ReadParseMime([maximum], [&cbfunc, &cbargs])
501 Read data submitted via a POST request using the multipart/form-data coding,
502 and store it in the global %in hash. The optional parameters are :
504 =item maximum - If the number of bytes of input exceeds this number, stop reading and call error.
506 =item cbfunc - A function reference to call after reading each block of data.
508 =item cbargs - Additional parameters to the callback function.
513 my ($max, $cbfunc, $cbargs) = @_;
514 my ($boundary, $line, $foo, $name, $got, $file);
515 my $err = &text('readparse_max', $max);
516 $ENV{'CONTENT_TYPE'} =~ /boundary=(.*)$/ || &error($text{'readparse_enc'});
517 if ($ENV{'CONTENT_LENGTH'} && $max && $ENV{'CONTENT_LENGTH'} > $max) {
520 &$cbfunc(0, $ENV{'CONTENT_LENGTH'}, $file, @$cbargs) if ($cbfunc);
522 <STDIN>; # skip first boundary
525 # Read section headers
529 $got += length($line);
530 &$cbfunc($got, $ENV{'CONTENT_LENGTH'}, @$cbargs) if ($cbfunc);
531 if ($max && $got > $max) {
536 if ($line =~ /^(\S+):\s*(.*)$/) {
537 $header{$lastheader = lc($1)} = $2;
539 elsif ($line =~ /^\s+(.*)$/) {
540 $header{$lastheader} .= $line;
544 # Parse out filename and type
545 if ($header{'content-disposition'} =~ /^form-data(.*)/) {
547 while ($rest =~ /([a-zA-Z]*)=\"([^\"]*)\"(.*)/) {
552 $foo = $name . "_$1";
559 &error($text{'readparse_cdheader'});
561 if ($header{'content-type'} =~ /^([^\s;]+)/) {
562 $foo = $name . "_content_type";
565 $file = $in{$name."_filename"};
568 $in{$name} .= "\0" if (defined($in{$name}));
571 $got += length($line);
572 &$cbfunc($got, $ENV{'CONTENT_LENGTH'}, $file, @$cbargs)
574 if ($max && $got > $max) {
575 #print STDERR "over limit of $max\n";
580 &$cbfunc(-1, $ENV{'CONTENT_LENGTH'}, $file, @$cbargs)
585 $ptline =~ s/[^a-zA-Z0-9\-]/\./g;
586 if (index($line, $boundary) != -1) { last; }
589 chop($in{$name}); chop($in{$name});
590 if (index($line,"$boundary--") != -1) { last; }
592 &$cbfunc(-1, $ENV{'CONTENT_LENGTH'}, $file, @$cbargs) if ($cbfunc);
595 =head2 ReadParse([&hash], [method], [noplus])
597 Fills the given hash reference with CGI parameters, or uses the global hash
598 %in if none is given. Also sets the global variables $in and @in. The other
601 =item method - For use of this HTTP method, such as GET
603 =item noplus - Don't convert + in parameters to spaces.
608 my $a = $_[0] || \%in;
610 my $meth = $_[1] ? $_[1] : $ENV{'REQUEST_METHOD'};
612 if ($meth eq 'POST') {
613 my $clen = $ENV{'CONTENT_LENGTH'};
614 &read_fully(STDIN, \$in, $clen) == $clen ||
615 &error("Failed to read POST input : $!");
617 if ($ENV{'QUERY_STRING'}) {
618 if ($in) { $in .= "&".$ENV{'QUERY_STRING'}; }
619 else { $in = $ENV{'QUERY_STRING'}; }
621 @in = split(/\&/, $in);
622 foreach my $i (@in) {
623 my ($k, $v) = split(/=/, $i, 2);
628 $k =~ s/%(..)/pack("c",hex($1))/ge;
629 $v =~ s/%(..)/pack("c",hex($1))/ge;
630 $a->{$k} = defined($a->{$k}) ? $a->{$k}."\0".$v : $v;
634 =head2 read_fully(fh, &buffer, length)
636 Read data from some file handle up to the given length, even in the face
637 of partial reads. Reads the number of bytes read. Stores received data in the
638 string pointed to be the buffer reference.
643 my ($fh, $buf, $len) = @_;
644 $fh = &callers_package($fh);
647 my $r = read(STDIN, $$buf, $len-$got, $got);
654 =head2 read_parse_mime_callback(size, totalsize, upload-id)
656 Called by ReadParseMime as new data arrives from a form-data POST. Only updates
657 the file on every 1% change though. For internal use by the upload progress
661 sub read_parse_mime_callback
663 my ($size, $totalsize, $filename, $id) = @_;
664 return if ($gconfig{'no_upload_tracker'});
667 # Create the upload tracking directory - if running as non-root, this has to
668 # be under the user's home
671 my @uinfo = @remote_user_info ? @remote_user_info : getpwuid($<);
672 $vardir = "$uinfo[7]/.tmp";
675 $vardir = $ENV{'WEBMIN_VAR'};
678 &make_dir($vardir, 0755);
681 # Remove any upload.* files more than 1 hour old
682 if (!$main::read_parse_mime_callback_flushed) {
684 opendir(UPDIR, $vardir);
685 foreach my $f (readdir(UPDIR)) {
686 next if ($f !~ /^upload\./);
687 my @st = stat("$vardir/$f");
688 if ($st[9] < $now-3600) {
689 unlink("$vardir/$f");
693 $main::read_parse_mime_callback_flushed++;
696 # Only update file once per percent
697 my $upfile = "$vardir/upload.$id";
698 if ($totalsize && $size >= 0) {
699 my $pc = int(100 * $size / $totalsize);
700 if ($pc <= $main::read_parse_mime_callback_pc{$upfile}) {
703 $main::read_parse_mime_callback_pc{$upfile} = $pc;
707 &open_tempfile(UPFILE, ">$upfile");
708 print UPFILE $size,"\n";
709 print UPFILE $totalsize,"\n";
710 print UPFILE $filename,"\n";
711 &close_tempfile(UPFILE);
714 =head2 read_parse_mime_javascript(upload-id, [&fields])
716 Returns an onSubmit= Javascript statement to popup a window for tracking
717 an upload with the given ID. For internal use by the upload progress tracker.
720 sub read_parse_mime_javascript
722 my ($id, $fields) = @_;
723 return "" if ($gconfig{'no_upload_tracker'});
724 my $opener = "window.open(\"$gconfig{'webprefix'}/uptracker.cgi?id=$id&uid=$<\", \"uptracker\", \"toolbar=no,menubar=no,scrollbars=no,width=500,height=100\");";
726 my $if = join(" || ", map { "typeof($_) != \"undefined\" && $_.value != \"\"" } @$fields);
727 return "onSubmit='if ($if) { $opener }'";
730 return "onSubmit='$opener'";
734 =head2 PrintHeader(charset)
736 Outputs the HTTP headers for an HTML page. The optional charset parameter
737 can be used to set a character set. Normally this function is not called
738 directly, but is rather called by ui_print_header or header.
743 if ($pragma_no_cache || $gconfig{'pragma_no_cache'}) {
744 print "pragma: no-cache\n";
745 print "Expires: Thu, 1 Jan 1970 00:00:00 GMT\n";
746 print "Cache-Control: no-store, no-cache, must-revalidate\n";
747 print "Cache-Control: post-check=0, pre-check=0\n";
749 if (defined($_[0])) {
750 print "Content-type: text/html; Charset=$_[0]\n\n";
753 print "Content-type: text/html\n\n";
757 =head2 header(title, image, [help], [config], [nomodule], [nowebmin], [rightside], [head-stuff], [body-stuff], [below])
759 Outputs a Webmin HTML page header with a title, including HTTP headers. The
762 =item title - The text to show at the top of the page
764 =item image - An image to show instead of the title text. This is typically left blank.
766 =item help - If set, this is the name of a help page that will be linked to in the title.
768 =item config - If set to 1, the title will contain a link to the module's config page.
770 =item nomodule - If set to 1, there will be no link in the title section to the module's index.
772 =item nowebmin - If set to 1, there will be no link in the title section to the Webmin index.
774 =item rightside - HTML to be shown on the right-hand side of the title. Can contain multiple lines, separated by <br>. Typically this is used for links to stop, start or restart servers.
776 =item head-stuff - HTML to be included in the <head> section of the page.
778 =item body-stuff - HTML attributes to be include in the <body> tag.
780 =item below - HTML to be displayed below the title. Typically this is used for application or server version information.
785 return if ($main::done_webmin_header++);
787 my $charset = defined($main::force_charset) ? $main::force_charset
789 &PrintHeader($charset);
790 &load_theme_library();
791 if (defined(&theme_header)) {
792 $module_name = &get_module_name();
794 $miniserv::page_capture = 1;
797 print "<!doctype html public \"-//W3C//DTD HTML 3.2 Final//EN\">\n";
800 if (defined(&theme_prehead)) {
804 print "<meta http-equiv=\"Content-Type\" ",
805 "content=\"text/html; Charset="."e_escape($charset)."\">\n";
808 my $title = &get_html_title($_[0]);
809 print "<title>$title</title>\n";
810 print $_[7] if ($_[7]);
811 print &get_html_status_line(0);
813 print "$tconfig{'headhtml'}\n" if ($tconfig{'headhtml'});
814 if ($tconfig{'headinclude'}) {
815 print &read_file_contents(
816 "$theme_root_directory/$tconfig{'headinclude'}");
819 my $bgcolor = defined($tconfig{'cs_page'}) ? $tconfig{'cs_page'} :
820 defined($gconfig{'cs_page'}) ? $gconfig{'cs_page'} : "ffffff";
821 my $link = defined($tconfig{'cs_link'}) ? $tconfig{'cs_link'} :
822 defined($gconfig{'cs_link'}) ? $gconfig{'cs_link'} : "0000ee";
823 my $text = defined($tconfig{'cs_text'}) ? $tconfig{'cs_text'} :
824 defined($gconfig{'cs_text'}) ? $gconfig{'cs_text'} : "000000";
825 my $bgimage = defined($tconfig{'bgimage'}) ? "background=$tconfig{'bgimage'}"
827 my $dir = $current_lang_info->{'dir'} ? "dir=\"$current_lang_info->{'dir'}\""
829 print "<body bgcolor=#$bgcolor link=#$link vlink=#$link text=#$text ",
830 "$bgimage $tconfig{'inbody'} $dir $_[8]>\n";
831 if (defined(&theme_prebody)) {
834 my $hostname = &get_display_hostname();
835 my $version = &get_webmin_version();
836 my $prebody = $tconfig{'prebody'};
838 $prebody =~ s/%HOSTNAME%/$hostname/g;
839 $prebody =~ s/%VERSION%/$version/g;
840 $prebody =~ s/%USER%/$remote_user/g;
841 $prebody =~ s/%OS%/$os_type $os_version/g;
844 if ($tconfig{'prebodyinclude'}) {
846 open(INC, "$theme_root_directory/$tconfig{'prebodyinclude'}");
853 print $tconfig{'preheader'};
854 my %this_module_info = &get_module_info(&get_module_name());
855 print "<table class='header' width=100%><tr>\n";
856 if ($gconfig{'sysinfo'} == 2 && $remote_user) {
857 print "<td id='headln1' colspan=3 align=center>\n";
858 print &get_html_status_line(1);
859 print "</td></tr> <tr>\n";
861 print "<td id='headln2l' width=15% valign=top align=left>";
862 if ($ENV{'HTTP_WEBMIN_SERVERS'} && !$tconfig{'framed'}) {
863 print "<a href='$ENV{'HTTP_WEBMIN_SERVERS'}'>",
864 "$text{'header_servers'}</a><br>\n";
866 if (!$_[5] && !$tconfig{'noindex'}) {
867 my @avail = &get_available_module_infos(1);
868 my $nolo = $ENV{'ANONYMOUS_USER'} ||
869 $ENV{'SSL_USER'} || $ENV{'LOCAL_USER'} ||
870 $ENV{'HTTP_USER_AGENT'} =~ /webmin/i;
871 if ($gconfig{'gotoone'} && $main::session_id && @avail == 1 &&
873 print "<a href='$gconfig{'webprefix'}/session_login.cgi?logout=1'>",
874 "$text{'main_logout'}</a><br>";
876 elsif ($gconfig{'gotoone'} && @avail == 1 && !$nolo) {
877 print "<a href=$gconfig{'webprefix'}/switch_user.cgi>",
878 "$text{'main_switch'}</a><br>";
880 elsif (!$gconfig{'gotoone'} || @avail > 1) {
881 print "<a href='$gconfig{'webprefix'}/?cat=",
882 $this_module_info{'category'},
883 "'>$text{'header_webmin'}</a><br>\n";
886 if (!$_[4] && !$tconfig{'nomoduleindex'}) {
887 my $idx = $this_module_info{'index_link'};
888 my $mi = $module_index_link || "/".&get_module_name()."/$idx";
889 my $mt = $module_index_name || $text{'header_module'};
890 print "<a href=\"$gconfig{'webprefix'}$mi\">$mt</a><br>\n";
892 if (ref($_[2]) eq "ARRAY" && !$ENV{'ANONYMOUS_USER'} &&
893 !$tconfig{'nohelp'}) {
894 print &hlink($text{'header_help'}, $_[2]->[0], $_[2]->[1]),
897 elsif (defined($_[2]) && !$ENV{'ANONYMOUS_USER'} &&
898 !$tconfig{'nohelp'}) {
899 print &hlink($text{'header_help'}, $_[2]),"<br>\n";
902 my %access = &get_module_acl();
903 if (!$access{'noconfig'} && !$config{'noprefs'}) {
904 my $cprog = $user_module_config_directory ?
905 "uconfig.cgi" : "config.cgi";
906 print "<a href=\"$gconfig{'webprefix'}/$cprog?",
907 &get_module_name()."\">",
908 $text{'header_config'},"</a><br>\n";
913 # Title is a single image
914 print "<td id='headln2c' align=center width=70%>",
915 "<img alt=\"$_[0]\" src=\"$_[1]\"></td>\n";
919 my $ts = defined($tconfig{'titlesize'}) ?
920 $tconfig{'titlesize'} : "+2";
921 print "<td id='headln2c' align=center width=70%>",
922 ($ts ? "<font size=$ts>" : ""),$_[0],
923 ($ts ? "</font>" : "");
924 print "<br>$_[9]\n" if ($_[9]);
927 print "<td id='headln2r' width=15% valign=top align=right>";
929 print "</td></tr></table>\n";
930 print $tconfig{'postheader'};
932 $miniserv::page_capture = 1;
935 =head2 get_html_title(title)
937 Returns the full string to appear in the HTML <title> block.
944 my $os_type = $gconfig{'real_os_type'} || $gconfig{'os_type'};
945 my $os_version = $gconfig{'real_os_version'} || $gconfig{'os_version'};
946 my $host = &get_display_hostname();
947 if ($gconfig{'sysinfo'} == 1 && $remote_user) {
948 $title = sprintf "%s : %s on %s (%s %s)\n",
949 $msg, $remote_user, $host,
950 $os_type, $os_version;
952 elsif ($gconfig{'sysinfo'} == 4 && $remote_user) {
953 $title = sprintf "%s on %s (%s %s)\n",
955 $os_type, $os_version;
960 if ($gconfig{'showlogin'} && $remote_user) {
961 $title = $remote_user.($title ? " : ".$title : "");
963 if ($gconfig{'showhost'}) {
964 $title = $host.($title ? " : ".$title : "");
969 =head2 get_html_framed_title
971 Returns the title text for a framed theme main page.
974 sub get_html_framed_title
977 my $os_type = $gconfig{'real_os_type'} || $gconfig{'os_type'};
978 my $os_version = $gconfig{'real_os_version'} || $gconfig{'os_version'};
980 if (($gconfig{'sysinfo'} == 4 || $gconfig{'sysinfo'} == 1) && $remote_user) {
981 # Alternate title mode requested
982 $title = sprintf "%s on %s (%s %s)\n",
983 $remote_user, &get_display_hostname(),
984 $os_type, $os_version;
987 # Title like 'Webmin x.yy on hostname (Linux 6)'
988 if ($os_version eq "*") {
992 $ostr = "$os_type $os_version";
994 my $host = &get_display_hostname();
995 my $ver = &get_webmin_version();
996 $title = $gconfig{'nohostname'} ? $text{'main_title2'} :
997 $gconfig{'showhost'} ? &text('main_title3', $ver, $ostr) :
998 &text('main_title', $ver, $host, $ostr);
999 if ($gconfig{'showlogin'}) {
1000 $title = $remote_user.($title ? " : ".$title : "");
1002 if ($gconfig{'showhost'}) {
1003 $title = $host.($title ? " : ".$title : "");
1009 =head2 get_html_status_line(text-only)
1011 Returns HTML for a script block that sets the status line, or if text-only
1012 is set to 1, just return the status line text.
1015 sub get_html_status_line
1017 my ($textonly) = @_;
1018 if (($gconfig{'sysinfo'} != 0 || !$remote_user) && !$textonly) {
1019 # Disabled in this mode
1022 my $os_type = $gconfig{'real_os_type'} || $gconfig{'os_type'};
1023 my $os_version = $gconfig{'real_os_version'} || $gconfig{'os_version'};
1024 my $line = &text('header_statusmsg',
1025 ($ENV{'ANONYMOUS_USER'} ? "Anonymous user"
1027 ($ENV{'SSL_USER'} ? " (SSL certified)" :
1028 $ENV{'LOCAL_USER'} ? " (Local user)" : ""),
1029 $text{'programname'},
1030 &get_webmin_version(),
1031 &get_display_hostname(),
1032 $os_type.($os_version eq "*" ? "" :" $os_version"));
1037 $line =~ s/\r|\n//g;
1038 return "<script language=JavaScript type=text/javascript>\n".
1039 "defaultStatus=\""."e_escape($line)."\";\n".
1044 =head2 popup_header([title], [head-stuff], [body-stuff], [no-body])
1046 Outputs a page header, suitable for a popup window. If no title is given,
1047 absolutely no decorations are output. Also useful in framesets. The parameters
1050 =item title - Title text for the popup window.
1052 =item head-stuff - HTML to appear in the <head> section.
1054 =item body-stuff - HTML attributes to be include in the <body> tag.
1056 =item no-body - If set to 1, don't generate a body tag
1061 return if ($main::done_webmin_header++);
1063 my $charset = defined($main::force_charset) ? $main::force_charset
1065 &PrintHeader($charset);
1066 &load_theme_library();
1067 if (defined(&theme_popup_header)) {
1068 &theme_popup_header(@_);
1069 $miniserv::page_capture = 1;
1072 print "<!doctype html public \"-//W3C//DTD HTML 3.2 Final//EN\">\n";
1075 if (defined(&theme_popup_prehead)) {
1076 &theme_popup_prehead(@_);
1078 print "<title>$_[0]</title>\n";
1080 print "$tconfig{'headhtml'}\n" if ($tconfig{'headhtml'});
1081 if ($tconfig{'headinclude'}) {
1082 print &read_file_contents(
1083 "$theme_root_directory/$tconfig{'headinclude'}");
1086 my $bgcolor = defined($tconfig{'cs_page'}) ? $tconfig{'cs_page'} :
1087 defined($gconfig{'cs_page'}) ? $gconfig{'cs_page'} : "ffffff";
1088 my $link = defined($tconfig{'cs_link'}) ? $tconfig{'cs_link'} :
1089 defined($gconfig{'cs_link'}) ? $gconfig{'cs_link'} : "0000ee";
1090 my $text = defined($tconfig{'cs_text'}) ? $tconfig{'cs_text'} :
1091 defined($gconfig{'cs_text'}) ? $gconfig{'cs_text'} : "000000";
1092 my $bgimage = defined($tconfig{'bgimage'}) ? "background=$tconfig{'bgimage'}"
1095 print "<body id='popup' bgcolor=#$bgcolor link=#$link vlink=#$link ",
1096 "text=#$text $bgimage $tconfig{'inbody'} $_[2]>\n";
1097 if (defined(&theme_popup_prebody)) {
1098 &theme_popup_prebody(@_);
1101 $miniserv::page_capture = 1;
1104 =head2 footer([page, name]+, [noendbody])
1106 Outputs the footer for a Webmin HTML page, possibly with links back to other
1107 pages. The links are specified by pairs of parameters, the first of which is
1108 a link destination, and the second the link text. For example :
1110 footer('/', 'Webmin index', '', 'Module menu');
1115 $miniserv::page_capture = 0;
1116 &load_theme_library();
1117 my %this_module_info = &get_module_info(&get_module_name());
1118 if (defined(&theme_footer)) {
1119 $module_name = &get_module_name(); # Old themes use these
1120 %module_info = %this_module_info;
1124 for(my $i=0; $i+1<@_; $i+=2) {
1126 if ($url ne '/' || !$tconfig{'noindex'}) {
1128 $url = "/?cat=$this_module_info{'category'}";
1130 elsif ($url eq '' && &get_module_name()) {
1131 $url = "/".&get_module_name()."/".
1132 $this_module_info{'index_link'};
1134 elsif ($url =~ /^\?/ && &get_module_name()) {
1135 $url = "/".&get_module_name()."/$url";
1137 $url = "$gconfig{'webprefix'}$url" if ($url =~ /^\//);
1139 print "<a href=\"$url\"><img alt=\"<-\" align=middle border=0 src=$gconfig{'webprefix'}/images/left.gif></a>\n";
1144 print " <a href=\"$url\">",&text('main_return', $_[$i+1]),"</a>\n";
1149 my $postbody = $tconfig{'postbody'};
1151 my $hostname = &get_display_hostname();
1152 my $version = &get_webmin_version();
1153 my $os_type = $gconfig{'real_os_type'} ||
1154 $gconfig{'os_type'};
1155 my $os_version = $gconfig{'real_os_version'} ||
1156 $gconfig{'os_version'};
1157 $postbody =~ s/%HOSTNAME%/$hostname/g;
1158 $postbody =~ s/%VERSION%/$version/g;
1159 $postbody =~ s/%USER%/$remote_user/g;
1160 $postbody =~ s/%OS%/$os_type $os_version/g;
1161 print "$postbody\n";
1163 if ($tconfig{'postbodyinclude'}) {
1165 open(INC, "$theme_root_directory/$tconfig{'postbodyinclude'}");
1171 if (defined(&theme_postbody)) {
1172 &theme_postbody(@_);
1174 print "</body></html>\n";
1178 =head2 popup_footer([no-body])
1180 Outputs html for a footer for a popup window, started by popup_header.
1185 $miniserv::page_capture = 0;
1186 &load_theme_library();
1187 if (defined(&theme_popup_footer)) {
1188 &theme_popup_footer(@_);
1197 =head2 load_theme_library
1199 Immediately loads the current theme's theme.pl file. Not generally useful for
1200 most module developers, as this is called automatically by the header function.
1203 sub load_theme_library
1205 return if (!$current_theme || $loaded_theme_library++);
1206 for(my $i=0; $i<@theme_root_directories; $i++) {
1207 if ($theme_configs[$i]->{'functions'}) {
1208 do $theme_root_directories[$i]."/".
1209 $theme_configs[$i]->{'functions'};
1214 =head2 redirect(url)
1216 Output HTTP headers to redirect the browser to some page. The url parameter is
1217 typically a relative URL like index.cgi or list_users.cgi.
1222 my $port = $ENV{'SERVER_PORT'} == 443 && uc($ENV{'HTTPS'}) eq "ON" ? "" :
1223 $ENV{'SERVER_PORT'} == 80 && uc($ENV{'HTTPS'}) ne "ON" ? "" :
1224 ":$ENV{'SERVER_PORT'}";
1225 my $prot = uc($ENV{'HTTPS'}) eq "ON" ? "https" : "http";
1226 my $wp = $gconfig{'webprefixnoredir'} ? undef : $gconfig{'webprefix'};
1228 if ($_[0] =~ /^(http|https|ftp|gopher):/) {
1229 # Absolute URL (like http://...)
1232 elsif ($_[0] =~ /^\//) {
1233 # Absolute path (like /foo/bar.cgi)
1234 $url = "$prot://$ENV{'SERVER_NAME'}$port$wp$_[0]";
1236 elsif ($ENV{'SCRIPT_NAME'} =~ /^(.*)\/[^\/]*$/) {
1237 # Relative URL (like foo.cgi)
1238 $url = "$prot://$ENV{'SERVER_NAME'}$port$wp$1/$_[0]";
1241 $url = "$prot://$ENV{'SERVER_NAME'}$port/$wp$_[0]";
1243 &load_theme_library();
1244 if (defined(&theme_redirect)) {
1245 $module_name = &get_module_name(); # Old themes use these
1246 %module_info = &get_module_info($module_name);
1247 &theme_redirect($_[0], $url);
1250 print "Location: $url\n\n";
1254 =head2 kill_byname(name, signal)
1256 Finds a process whose command line contains the given name (such as httpd), and
1257 sends some signal to it. The signal can be numeric (like 9) or named
1263 my @pids = &find_byname($_[0]);
1264 return scalar(@pids) if (&is_readonly_mode());
1265 &webmin_debug_log('KILL', "signal=$_[1] name=$_[0]")
1266 if ($gconfig{'debug_what_procs'});
1267 if (@pids) { kill($_[1], @pids); return scalar(@pids); }
1271 =head2 kill_byname_logged(name, signal)
1273 Like kill_byname, but also logs the killing.
1276 sub kill_byname_logged
1278 my @pids = &find_byname($_[0]);
1279 return scalar(@pids) if (&is_readonly_mode());
1280 if (@pids) { &kill_logged($_[1], @pids); return scalar(@pids); }
1284 =head2 find_byname(name)
1286 Finds processes searching for the given name in their command lines, and
1287 returns a list of matching PIDs.
1292 if ($gconfig{'os_type'} =~ /-linux$/ && -r "/proc/$$/cmdline") {
1293 # Linux with /proc filesystem .. use cmdline files, as this is
1294 # faster than forking
1296 opendir(PROCDIR, "/proc");
1297 foreach my $f (readdir(PROCDIR)) {
1298 if ($f eq int($f) && $f != $$) {
1299 my $line = &read_file_contents("/proc/$f/cmdline");
1300 if ($line =~ /$_[0]/) {
1309 if (&foreign_check("proc")) {
1310 # Call the proc module
1311 &foreign_require("proc", "proc-lib.pl");
1312 if (defined(&proc::list_processes)) {
1313 my @procs = &proc::list_processes();
1315 foreach my $p (@procs) {
1316 if ($p->{'args'} =~ /$_[0]/) {
1317 push(@pids, $p->{'pid'});
1320 @pids = grep { $_ != $$ } @pids;
1325 # Fall back to running a command
1327 $cmd = $gconfig{'find_pid_command'};
1328 $cmd =~ s/NAME/"$_[0]"/g;
1329 $cmd = &translate_command($cmd);
1330 @pids = split(/\n/, `($cmd) <$null_file 2>$null_file`);
1331 @pids = grep { $_ != $$ } @pids;
1335 =head2 error([message]+)
1337 Display an error message and exit. This should be used by CGI scripts that
1338 encounter a fatal error or invalid user input to notify users of the problem.
1339 If error_setup has been called, the displayed error message will be prefixed
1340 by the message setup using that function.
1345 $main::no_miniserv_userdb = 1;
1346 my $msg = join("", @_);
1347 $msg =~ s/<[^>]*>//g;
1348 if (!$main::error_must_die) {
1349 print STDERR "Error: ",$msg,"\n";
1351 &load_theme_library();
1352 if ($main::error_must_die) {
1353 if ($gconfig{'error_stack'}) {
1354 print STDERR "Error: ",$msg,"\n";
1355 for(my $i=0; my @stack = caller($i); $i++) {
1356 print STDERR "File: $stack[1] Line: $stack[2] ",
1357 "Function: $stack[3]\n";
1362 elsif (!$ENV{'REQUEST_METHOD'}) {
1363 # Show text-only error
1364 print STDERR "$text{'error'}\n";
1365 print STDERR "-----\n";
1366 print STDERR ($main::whatfailed ? "$main::whatfailed : " : ""),
1368 print STDERR "-----\n";
1369 if ($gconfig{'error_stack'}) {
1371 print STDERR $text{'error_stack'},"\n";
1372 for(my $i=0; my @stack = caller($i); $i++) {
1373 print STDERR &text('error_stackline',
1374 $stack[1], $stack[2], $stack[3]),"\n";
1379 elsif (defined(&theme_error)) {
1383 &header($text{'error'}, "");
1385 print "<h3>",($main::whatfailed ? "$main::whatfailed : " : ""),
1387 if ($gconfig{'error_stack'}) {
1389 print "<h3>$text{'error_stack'}</h3>\n";
1391 print "<tr> <td><b>$text{'error_file'}</b></td> ",
1392 "<td><b>$text{'error_line'}</b></td> ",
1393 "<td><b>$text{'error_sub'}</b></td> </tr>\n";
1394 for($i=0; my @stack = caller($i); $i++) {
1396 print "<td>$stack[1]</td>\n";
1397 print "<td>$stack[2]</td>\n";
1398 print "<td>$stack[3]</td>\n";
1404 if ($ENV{'HTTP_REFERER'} && $main::completed_referers_check) {
1405 &footer($ENV{'HTTP_REFERER'}, $text{'error_previous'});
1411 &unlock_all_files();
1412 &cleanup_tempnames();
1416 =head2 popup_error([message]+)
1418 This function is almost identical to error, but displays the message with HTML
1419 headers suitable for a popup window.
1424 $main::no_miniserv_userdb = 1;
1425 &load_theme_library();
1426 if ($main::error_must_die) {
1429 elsif (defined(&theme_popup_error)) {
1430 &theme_popup_error(@_);
1433 &popup_header($text{'error'}, "");
1434 print "<h3>",($main::whatfailed ? "$main::whatfailed : " : ""),@_,"</h3>\n";
1437 &unlock_all_files();
1438 &cleanup_tempnames();
1442 =head2 error_setup(message)
1444 Registers a message to be prepended to all error messages displayed by the
1450 $main::whatfailed = $_[0];
1453 =head2 wait_for(handle, regexp, regexp, ...)
1455 Reads from the input stream until one of the regexps matches, and returns the
1456 index of the matching regexp, or -1 if input ended before any matched. This is
1457 very useful for parsing the output of interactive programs, and can be used with
1458 a two-way pipe to feed input to a program in response to output matched by
1461 If the matching regexp contains bracketed sub-expressions, their values will
1462 be placed in the global array @matches, indexed starting from 1. You cannot
1463 use the Perl variables $1, $2 and so on to capture matches.
1467 $rv = wait_for($loginfh, "username:");
1469 error("Didn't get username prompt");
1471 print $loginfh "joe\n";
1472 $rv = wait_for($loginfh, "password:");
1474 error("Didn't get password prompt");
1476 print $loginfh "smeg\n";
1481 my ($c, $i, $sw, $rv, $ha);
1482 undef($wait_for_input);
1483 if ($wait_for_debug) {
1484 print STDERR "wait_for(",join(",", @_),")\n";
1486 $ha = &callers_package($_[0]);
1487 if ($wait_for_debug) {
1488 print STDERR "File handle=$ha fd=",fileno($ha),"\n";
1493 " if ((\$c = getc(\$ha)) eq \"\") { return -1; }\n".
1494 " \$wait_for_input .= \$c;\n";
1495 if ($wait_for_debug) {
1496 $codes .= "print STDERR \$wait_for_input,\"\\n\";";
1498 for($i=1; $i<@_; $i++) {
1499 $sw = $i>1 ? "elsif" : "if";
1500 $codes .= " $sw (\$wait_for_input =~ /$_[$i]/i) { \$hit = $i-1; }\n";
1503 " if (defined(\$hit)) {\n".
1504 " \@matches = (-1, \$1, \$2, \$3, \$4, \$5, \$6, \$7, \$8, \$9);\n".
1510 &error("wait_for error : $@\n");
1515 =head2 fast_wait_for(handle, string, string, ...)
1517 This function behaves very similar to wait_for (documented above), but instead
1518 of taking regular expressions as parameters, it takes strings. As soon as the
1519 input contains one of them, it will return the index of the matching string.
1520 If the input ends before any match, it returns -1.
1525 my ($inp, $maxlen, $ha, $i, $c, $inpl);
1526 for($i=1; $i<@_; $i++) {
1527 $maxlen = length($_[$i]) > $maxlen ? length($_[$i]) : $maxlen;
1531 if (($c = getc($ha)) eq "") {
1532 &error("fast_wait_for read error : $!");
1535 if (length($inp) > $maxlen) {
1536 $inp = substr($inp, length($inp)-$maxlen);
1538 $inpl = length($inp);
1539 for($i=1; $i<@_; $i++) {
1540 if ($_[$i] eq substr($inp, $inpl-length($_[$i]))) {
1547 =head2 has_command(command)
1549 Returns the full path to the executable if some command is in the path, or
1550 undef if not found. If the given command is already an absolute path and
1551 exists, then the same path will be returned.
1556 if (!$_[0]) { return undef; }
1557 if (exists($main::has_command_cache{$_[0]})) {
1558 return $main::has_command_cache{$_[0]};
1561 my $slash = $gconfig{'os_type'} eq 'windows' ? '\\' : '/';
1562 if ($_[0] =~ /^\// || $_[0] =~ /^[a-z]:[\\\/]/i) {
1563 # Absolute path given - just use it
1564 my $t = &translate_filename($_[0]);
1565 $rv = (-x $t && !-d _) ? $_[0] : undef;
1568 # Check each directory in the path
1570 foreach my $d (split($path_separator, $ENV{'PATH'})) {
1571 next if ($donedir{$d}++);
1572 $d =~ s/$slash$// if ($d ne $slash);
1573 my $t = &translate_filename("$d/$_[0]");
1574 if (-x $t && !-d _) {
1575 $rv = $d.$slash.$_[0];
1578 if ($gconfig{'os_type'} eq 'windows') {
1579 foreach my $sfx (".exe", ".com", ".bat") {
1580 my $t = &translate_filename("$d/$_[0]").$sfx;
1581 if (-r $t && !-d _) {
1582 $rv = $d.$slash.$_[0].$sfx;
1589 $main::has_command_cache{$_[0]} = $rv;
1593 =head2 make_date(seconds, [date-only], [fmt])
1595 Converts a Unix date/time in seconds to a human-readable form, by default
1596 formatted like dd/mmm/yyyy hh:mm:ss. Parameters are :
1598 =item seconds - Unix time is seconds to convert.
1600 =item date-only - If set to 1, exclude the time from the returned string.
1602 =item fmt - Optional, one of dd/mon/yyyy, dd/mm/yyyy, mm/dd/yyyy or yyyy/mm/dd
1607 my ($secs, $only, $fmt) = @_;
1608 my @tm = localtime($secs);
1611 $fmt = $gconfig{'dateformat'} || 'dd/mon/yyyy';
1613 if ($fmt eq 'dd/mon/yyyy') {
1614 $date = sprintf "%2.2d/%s/%4.4d",
1615 $tm[3], $text{"smonth_".($tm[4]+1)}, $tm[5]+1900;
1617 elsif ($fmt eq 'dd/mm/yyyy') {
1618 $date = sprintf "%2.2d/%2.2d/%4.4d", $tm[3], $tm[4]+1, $tm[5]+1900;
1620 elsif ($fmt eq 'mm/dd/yyyy') {
1621 $date = sprintf "%2.2d/%2.2d/%4.4d", $tm[4]+1, $tm[3], $tm[5]+1900;
1623 elsif ($fmt eq 'yyyy/mm/dd') {
1624 $date = sprintf "%4.4d/%2.2d/%2.2d", $tm[5]+1900, $tm[4]+1, $tm[3];
1626 elsif ($fmt eq 'd. mon yyyy') {
1627 $date = sprintf "%d. %s %4.4d",
1628 $tm[3], $text{"smonth_".($tm[4]+1)}, $tm[5]+1900;
1630 elsif ($fmt eq 'dd.mm.yyyy') {
1631 $date = sprintf "%2.2d.%2.2d.%4.4d", $tm[3], $tm[4]+1, $tm[5]+1900;
1633 elsif ($fmt eq 'yyyy-mm-dd') {
1634 $date = sprintf "%4.4d-%2.2d-%2.2d", $tm[5]+1900, $tm[4]+1, $tm[3];
1637 $date .= sprintf " %2.2d:%2.2d", $tm[2], $tm[1];
1642 =head2 file_chooser_button(input, type, [form], [chroot], [addmode])
1644 Return HTML for a button that pops up a file chooser when clicked, and places
1645 the selected filename into another HTML field. The parameters are :
1647 =item input - Name of the form field to store the filename in.
1649 =item type - 0 for file or directory chooser, or 1 for directory only.
1651 =item form - Index of the form containing the button.
1653 =item chroot - If set to 1, the chooser will be limited to this directory.
1655 =item addmode - If set to 1, the selected filename will be appended to the text box instead of replacing it's contents.
1658 sub file_chooser_button
1660 return &theme_file_chooser_button(@_)
1661 if (defined(&theme_file_chooser_button));
1662 my $form = defined($_[2]) ? $_[2] : 0;
1663 my $chroot = defined($_[3]) ? $_[3] : "/";
1664 my $add = int($_[4]);
1665 my ($w, $h) = (400, 300);
1666 if ($gconfig{'db_sizefile'}) {
1667 ($w, $h) = split(/x/, $gconfig{'db_sizefile'});
1669 return "<input type=button onClick='ifield = form.$_[0]; chooser = window.open(\"$gconfig{'webprefix'}/chooser.cgi?add=$add&type=$_[1]&chroot=$chroot&file=\"+escape(ifield.value), \"chooser\", \"toolbar=no,menubar=no,scrollbars=no,resizable=yes,width=$w,height=$h\"); chooser.ifield = ifield; window.ifield = ifield' value=\"...\">\n";
1672 =head2 popup_window_button(url, width, height, scrollbars?, &field-mappings)
1674 Returns HTML for a button that will popup a chooser window of some kind. The
1677 =item url - Base URL of the popup window's contents
1679 =item width - Width of the window in pixels
1681 =item height - Height in pixels
1683 =item scrollbars - Set to 1 if the window should have scrollbars
1685 The field-mappings parameter is an array ref of array refs containing
1687 =item - Attribute to assign field to in the popup window
1689 =item - Form field name
1691 =item - CGI parameter to URL for value, if any
1694 sub popup_window_button
1696 return &theme_popup_window_button(@_) if (defined(&theme_popup_window_button));
1697 my ($url, $w, $h, $scroll, $fields) = @_;
1698 my $scrollyn = $scroll ? "yes" : "no";
1699 my $rv = "<input type=button onClick='";
1700 foreach my $m (@$fields) {
1701 $rv .= "$m->[0] = form.$m->[1]; ";
1703 my $sep = $url =~ /\?/ ? "&" : "?";
1704 $rv .= "chooser = window.open(\"$url\"";
1705 foreach my $m (@$fields) {
1707 $rv .= "+\"$sep$m->[2]=\"+escape($m->[0].value)";
1711 $rv .= ", \"chooser\", \"toolbar=no,menubar=no,scrollbars=$scrollyn,resizable=yes,width=$w,height=$h\"); ";
1712 foreach my $m (@$fields) {
1713 $rv .= "chooser.$m->[0] = $m->[0]; ";
1714 $rv .= "window.$m->[0] = $m->[0]; ";
1716 $rv .= "' value=\"...\">";
1720 =head2 read_acl(&user-module-hash, &user-list-hash, [&only-users])
1722 Reads the Webmin acl file into the given hash references. The first is indexed
1723 by a combined key of username,module , with the value being set to 1 when
1724 the user has access to that module. The second is indexed by username, with
1725 the value being an array ref of allowed modules.
1727 This function is deprecated in favour of foreign_available, which performs a
1728 more comprehensive check of module availability.
1730 If the only-users array ref parameter is given, the results may be limited to
1731 users in that list of names.
1736 my ($usermod, $userlist, $only) = @_;
1737 if (!%main::acl_hash_cache) {
1738 # Read from local files
1740 open(ACL, &acl_filename());
1742 if (/^([^:]+):\s*(.*)/) {
1744 my @mods = split(/\s+/, $2);
1745 foreach my $m (@mods) {
1746 $main::acl_hash_cache{$user,$m}++;
1748 $main::acl_array_cache{$user} = \@mods;
1753 %$usermod = %main::acl_hash_cache if ($usermod);
1754 %$userlist = %main::acl_array_cache if ($userlist);
1757 my $userdb = &get_userdb_string();
1758 my ($dbh, $proto, $prefix, $args) =
1759 $userdb ? &connect_userdb($userdb) : ( );
1761 if ($proto eq "mysql" || $proto eq "postgresql") {
1762 # Select usernames and modules from SQL DB
1763 my $cmd = $dbh->prepare(
1764 "select webmin_user.name,webmin_user_attr.value ".
1765 "from webmin_user,webmin_user_attr ".
1766 "where webmin_user.id = webmin_user_attr.id ".
1767 "and webmin_user_attr.attr = 'modules' ".
1768 ($only ? " and webmin_user.name in (".
1769 join(",", map { "'$_'" } @$only).")" : ""));
1770 if ($cmd && $cmd->execute()) {
1771 while(my ($user, $mods) = $cmd->fetchrow()) {
1772 my @mods = split(/\s+/, $mods);
1773 foreach my $m (@mods) {
1774 $usermod->{$user,$m}++ if ($usermod);
1776 $userlist->{$user} = \@mods if ($userlist);
1779 $cmd->finish() if ($cmd);
1781 elsif ($proto eq "ldap") {
1782 # Find users in LDAP
1783 my $filter = '(objectClass='.$args->{'userclass'}.')';
1786 "(|".join("", map { "(cn=$_)" } @$only).")";
1787 $filter = "(&".$filter.$ufilter.")";
1789 my $rv = $dbh->search(
1793 attrs => [ 'cn', 'webminModule' ]);
1794 if ($rv && !$rv->code) {
1795 foreach my $u ($rv->all_entries) {
1796 my $user = $u->get_value('cn');
1797 my @mods =$u->get_value('webminModule');
1798 foreach my $m (@mods) {
1799 $usermod->{$user,$m}++ if ($usermod);
1801 $userlist->{$user} = \@mods if ($userlist);
1805 &disconnect_userdb($userdb, $dbh);
1811 Returns the file containing the webmin ACL, which is usually
1812 /etc/webmin/webmin.acl.
1817 return "$config_directory/webmin.acl";
1822 Does nothing, but kept around for compatability.
1829 =head2 get_miniserv_config(&hash)
1831 Reads the Webmin webserver's (miniserv.pl) configuration file, usually located
1832 at /etc/webmin/miniserv.conf, and stores its names and values in the given
1836 sub get_miniserv_config
1838 return &read_file_cached(
1839 $ENV{'MINISERV_CONFIG'} || "$config_directory/miniserv.conf", $_[0]);
1842 =head2 put_miniserv_config(&hash)
1844 Writes out the Webmin webserver configuration file from the contents of
1845 the given hash ref. This should be initially populated by get_miniserv_config,
1848 get_miniserv_config(\%miniserv);
1849 $miniserv{'port'} = 10005;
1850 put_miniserv_config(\%miniserv);
1854 sub put_miniserv_config
1856 &write_file($ENV{'MINISERV_CONFIG'} || "$config_directory/miniserv.conf",
1860 =head2 restart_miniserv([nowait])
1862 Kill the old miniserv process and re-start it, then optionally waits for
1863 it to restart. This will apply all configuration settings.
1866 sub restart_miniserv
1869 return undef if (&is_readonly_mode());
1871 &get_miniserv_config(\%miniserv) || return;
1872 if ($main::webmin_script_type eq 'web' && !$ENV{"MINISERV_CONFIG"}) {
1873 # Running under some web server other than miniserv, so do nothing
1878 if ($gconfig{'os_type'} ne 'windows') {
1879 # On Unix systems, we can restart with a signal
1880 my ($pid, $addr, $i);
1881 $miniserv{'inetd'} && return;
1882 my @oldst = stat($miniserv{'pidfile'});
1883 $pid = $ENV{'MINISERV_PID'};
1885 if (!open(PID, $miniserv{'pidfile'})) {
1886 print STDERR "PID file $miniserv{'pidfile'} does ",
1893 print STDERR "Invalid PID file $miniserv{'pidfile'}\n";
1896 if (!kill(0, $pid)) {
1897 print STDERR "PID $pid from file $miniserv{'pidfile'} ",
1903 # Just signal miniserv to restart
1904 &kill_logged('HUP', $pid) || &error("Incorrect Webmin PID $pid");
1906 # Wait till new PID is written, indicating a restart
1907 for($i=0; $i<60; $i++) {
1909 my @newst = stat($miniserv{'pidfile'});
1910 last if ($newst[9] != $oldst[9]);
1912 $i < 60 || &error("Webmin server did not write new PID file");
1914 ## Totally kill the process and re-run it
1915 #$SIG{'TERM'} = 'IGNORE';
1916 #&kill_logged('TERM', $pid);
1917 #&system_logged("$config_directory/start >/dev/null 2>&1 </dev/null");
1920 # On Windows, we need to use the flag file
1921 open(TOUCH, ">$miniserv{'restartflag'}");
1926 # Wait for miniserv to come back up
1927 my $addr = $miniserv{'bind'} || "127.0.0.1";
1929 for($i=0; $i<20; $i++) {
1932 &open_socket($addr, $miniserv{'port'}, STEST, \$err);
1934 last if (!$err && ++$ok >= 2);
1936 $i < 20 || &error("Failed to restart Webmin server!");
1940 =head2 reload_miniserv
1942 Sends a USR1 signal to the miniserv process, telling it to read-read it's
1943 configuration files. Not all changes will be applied though, such as the
1944 IP addresses and ports to accept connections on.
1949 return undef if (&is_readonly_mode());
1951 &get_miniserv_config(\%miniserv) || return;
1952 if ($main::webmin_script_type eq 'web' && !$ENV{"MINISERV_CONFIG"}) {
1953 # Running under some web server other than miniserv, so do nothing
1957 if ($gconfig{'os_type'} ne 'windows') {
1958 # Send a USR1 signal to re-read the config
1959 my ($pid, $addr, $i);
1960 $miniserv{'inetd'} && return;
1961 $pid = $ENV{'MINISERV_PID'};
1963 if (!open(PID, $miniserv{'pidfile'})) {
1964 print STDERR "PID file $miniserv{'pidfile'} does ",
1971 print STDERR "Invalid PID file $miniserv{'pidfile'}\n";
1974 if (!kill(0, $pid)) {
1975 print STDERR "PID $pid from file $miniserv{'pidfile'} ",
1980 &kill_logged('USR1', $pid) || &error("Incorrect Webmin PID $pid");
1982 # Make sure this didn't kill Webmin!
1984 if (!kill(0, $pid)) {
1985 print STDERR "USR1 signal killed Webmin - restarting\n";
1986 &system_logged("$config_directory/start >/dev/null 2>&1 </dev/null");
1990 # On Windows, we need to use the flag file
1991 open(TOUCH, ">$miniserv{'reloadflag'}");
1996 =head2 check_os_support(&minfo, [os-type, os-version], [api-only])
1998 Returns 1 if some module is supported on the current operating system, or the
1999 OS supplies as parameters. The parameters are :
2001 =item minfo - A hash ref of module information, as returned by get_module_info
2003 =item os-type - The Webmin OS code to use instead of the system's real OS, such as redhat-linux
2005 =item os-version - The Webmin OS version to use, such as 13.0
2007 =item api-only - If set to 1, considers a module supported if it provides an API to other modules on this OS, even if the majority of its functionality is not supported.
2010 sub check_os_support
2012 my $oss = $_[0]->{'os_support'};
2013 if ($_[3] && $oss && $_[0]->{'api_os_support'}) {
2014 # May provide usable API
2015 $oss .= " ".$_[0]->{'api_os_support'};
2017 if ($_[0]->{'nozone'} && &running_in_zone()) {
2018 # Not supported in a Solaris Zone
2021 if ($_[0]->{'novserver'} && &running_in_vserver()) {
2022 # Not supported in a Linux Vserver
2025 if ($_[0]->{'noopenvz'} && &running_in_openvz()) {
2026 # Not supported in an OpenVZ container
2029 return 1 if (!$oss || $oss eq '*');
2030 my $osver = $_[2] || $gconfig{'os_version'};
2031 my $ostype = $_[1] || $gconfig{'os_type'};
2034 my ($os, $ver, $codes);
2035 my ($neg) = ($oss =~ s/^!//); # starts with !
2036 $anyneg++ if ($neg);
2037 if ($oss =~ /^([^\/\s]+)\/([^\{\s]+)\{([^\}]*)\}\s*(.*)$/) {
2039 $os = $1; $ver = $2; $codes = $3; $oss = $4;
2041 elsif ($oss =~ /^([^\/\s]+)\/([^\/\s]+)\s*(.*)$/) {
2043 $os = $1; $ver = $2; $oss = $3;
2045 elsif ($oss =~ /^([^\{\s]+)\{([^\}]*)\}\s*(.*)$/) {
2047 $os = $1; $codes = $2; $oss = $3;
2049 elsif ($oss =~ /^\{([^\}]*)\}\s*(.*)$/) {
2051 $codes = $1; $oss = $2;
2053 elsif ($oss =~ /^(\S+)\s*(.*)$/) {
2055 $os = $1; $oss = $2;
2058 next if ($os && !($os eq $ostype ||
2059 $ostype =~ /^(\S+)-(\S+)$/ && $os eq "*-$2"));
2060 if ($ver =~ /^([0-9\.]+)\-([0-9\.]+)$/) {
2061 next if ($osver < $1 || $osver > $2);
2063 elsif ($ver =~ /^([0-9\.]+)\-\*$/) {
2064 next if ($osver < $1);
2066 elsif ($ver =~ /^\*\-([0-9\.]+)$/) {
2067 next if ($osver > $1);
2070 next if ($ver ne $osver);
2072 next if ($codes && !eval $codes);
2078 =head2 http_download(host, port, page, destfile, [&error], [&callback], [sslmode], [user, pass], [timeout], [osdn-convert], [no-cache], [&headers])
2080 Downloads data from a HTTP url to a local file or string. The parameters are :
2082 =item host - The hostname part of the URL, such as www.google.com
2084 =item port - The HTTP port number, such as 80
2086 =item page - The filename part of the URL, like /index.html
2088 =item destfile - The local file to save the URL data to, like /tmp/index.html. This can also be a scalar reference, in which case the data will be appended to that scalar.
2090 =item error - If set to a scalar ref, the function will store any error message in this scalar and return 0 on failure, or 1 on success. If not set, it will simply call the error function if the download fails.
2092 =item callback - If set to a function ref, it will be called after each block of data is received. This is typically set to \&progress_callback, for printing download progress.
2094 =item sslmode - If set to 1, an HTTPS connection is used instead of HTTP.
2096 =item user - If set, HTTP authentication is done with this username.
2098 =item pass - The HTTP password to use with the username above.
2100 =item timeout - A timeout in seconds to wait for the TCP connection to be established before failing.
2102 =item osdn-convert - If set to 1, URL for downloads from sourceforge are converted to use an appropriate mirror site.
2104 =item no-cache - If set to 1, Webmin's internal caching for this URL is disabled.
2106 =item headers - If set to a hash ref of additional HTTP headers, they will be added to the request.
2111 my ($host, $port, $page, $dest, $error, $cbfunc, $ssl, $user, $pass,
2112 $timeout, $osdn, $nocache, $headers) = @_;
2113 if ($gconfig{'debug_what_net'}) {
2114 &webmin_debug_log('HTTP', "host=$host port=$port page=$page ssl=$ssl".
2115 ($user ? " user=$user pass=$pass" : "").
2116 (ref($dest) ? "" : " dest=$dest"));
2119 # Convert OSDN URL first
2120 my $prot = $ssl ? "https://" : "http://";
2121 my $portstr = $ssl && $port == 443 ||
2122 !$ssl && $port == 80 ? "" : ":$port";
2123 ($host, $port, $page, $ssl) = &parse_http_url(
2124 &convert_osdn_url($prot.$host.$portstr.$page));
2127 # Check if we already have cached the URL
2128 my $url = ($ssl ? "https://" : "http://").$host.":".$port.$page;
2129 my $cfile = &check_in_http_cache($url);
2130 if ($cfile && !$nocache) {
2131 # Yes! Copy to dest file or variable
2132 &$cbfunc(6, $url) if ($cbfunc);
2134 &open_readfile(CACHEFILE, $cfile);
2136 $$dest = <CACHEFILE>;
2140 ©_source_dest($cfile, $dest);
2147 push(@headers, [ "Host", $host ]);
2148 push(@headers, [ "User-agent", "Webmin" ]);
2149 push(@headers, [ "Accept-language", "en" ]);
2151 my $auth = &encode_base64("$user:$pass");
2152 $auth =~ tr/\r\n//d;
2153 push(@headers, [ "Authorization", "Basic $auth" ]);
2155 foreach my $hname (keys %$headers) {
2156 push(@headers, [ $hname, $headers->{$hname} ]);
2159 # Actually download it
2160 $main::download_timed_out = undef;
2161 local $SIG{ALRM} = \&download_timeout;
2162 alarm($timeout || 60);
2163 my $h = &make_http_connection($host, $port, $ssl, "GET", $page, \@headers);
2165 $h = $main::download_timed_out if ($main::download_timed_out);
2167 if ($error) { $$error = $h; return; }
2168 else { &error($h); }
2170 &complete_http_download($h, $dest, $error, $cbfunc, $osdn, $host, $port,
2171 $headers, $ssl, $nocache);
2172 if ((!$error || !$$error) && !$nocache) {
2173 &write_to_http_cache($url, $dest);
2177 =head2 complete_http_download(handle, destfile, [&error], [&callback], [osdn], [oldhost], [oldport], [&send-headers], [old-ssl], [no-cache])
2179 Do a HTTP download, after the headers have been sent. For internal use only,
2180 typically called by http_download.
2183 sub complete_http_download
2185 local ($line, %header, @headers, $s); # Kept local so that callback funcs
2191 ($line = &read_http_connection($_[0])) =~ tr/\r\n//d;
2192 if ($line !~ /^HTTP\/1\..\s+(200|30[0-9])(\s+|$)/) {
2194 if ($_[2]) { ${$_[2]} = $line; return; }
2195 else { &error("Download failed : $line"); }
2198 &$cbfunc(1, $rcode >= 300 && $rcode < 400 ? 1 : 0)
2201 $line = &read_http_connection($_[0]);
2202 $line =~ tr/\r\n//d;
2203 $line =~ /^(\S+):\s+(.*)$/ || last;
2204 $header{lc($1)} = $2;
2205 push(@headers, [ lc($1), $2 ]);
2208 if ($main::download_timed_out) {
2209 if ($_[2]) { ${$_[2]} = $main::download_timed_out; return 0; }
2210 else { &error($main::download_timed_out); }
2212 &$cbfunc(2, $header{'content-length'}) if ($cbfunc);
2213 if ($rcode >= 300 && $rcode < 400) {
2214 # follow the redirect
2215 &$cbfunc(5, $header{'location'}) if ($cbfunc);
2216 my ($host, $port, $page, $ssl);
2217 if ($header{'location'} =~ /^(http|https):\/\/([^:]+):(\d+)(\/.*)?$/) {
2218 $ssl = $1 eq 'https' ? 1 : 0;
2219 $host = $2; $port = $3; $page = $4 || "/";
2221 elsif ($header{'location'} =~ /^(http|https):\/\/([^:\/]+)(\/.*)?$/) {
2222 $ssl = $1 eq 'https' ? 1 : 0;
2223 $host = $2; $port = 80; $page = $3 || "/";
2225 elsif ($header{'location'} =~ /^\// && $_[5]) {
2226 # Relative to same server
2230 $page = $header{'location'};
2232 elsif ($header{'location'}) {
2233 # Assume relative to same dir .. not handled
2234 if ($_[2]) { ${$_[2]} = "Invalid Location header $header{'location'}"; return; }
2235 else { &error("Invalid Location header $header{'location'}"); }
2238 if ($_[2]) { ${$_[2]} = "Missing Location header"; return; }
2239 else { &error("Missing Location header"); }
2242 ($page, $params) = split(/\?/, $page);
2244 $page .= "?".$params if (defined($params));
2245 &http_download($host, $port, $page, $_[1], $_[2], $cbfunc, $ssl,
2246 undef, undef, undef, $_[4], $_[9], $_[7]);
2251 # Append to a variable
2252 while(defined($buf = &read_http_connection($_[0], 1024))) {
2254 &$cbfunc(3, length(${$_[1]})) if ($cbfunc);
2260 if (!&open_tempfile(PFILE, ">$_[1]", 1)) {
2261 if ($_[2]) { ${$_[2]} = "Failed to write to $_[1] : $!"; return; }
2262 else { &error("Failed to write to $_[1] : $!"); }
2264 binmode(PFILE); # For windows
2265 while(defined($buf = &read_http_connection($_[0], 1024))) {
2266 &print_tempfile(PFILE, $buf);
2267 $got += length($buf);
2268 &$cbfunc(3, $got) if ($cbfunc);
2270 &close_tempfile(PFILE);
2271 if ($header{'content-length'} &&
2272 $got != $header{'content-length'}) {
2273 if ($_[2]) { ${$_[2]} = "Download incomplete"; return; }
2274 else { &error("Download incomplete"); }
2277 &$cbfunc(4) if ($cbfunc);
2279 &close_http_connection($_[0]);
2283 =head2 ftp_download(host, file, destfile, [&error], [&callback], [user, pass], [port], [no-cache])
2285 Download data from an FTP site to a local file. The parameters are :
2287 =item host - FTP server hostname
2289 =item file - File on the FTP server to download
2291 =item destfile - File on the Webmin system to download data to
2293 =item error - If set to a string ref, any error message is written into this string and the function returns 0 on failure, 1 on success. Otherwise, error is called on failure.
2295 =item callback - If set to a function ref, it will be called after each block of data is received. This is typically set to \&progress_callback, for printing download progress.
2297 =item user - Username to login to the FTP server as. If missing, Webmin will login as anonymous.
2299 =item pass - Password for the username above.
2301 =item port - FTP server port number, which defaults to 21 if not set.
2303 =item no-cache - If set to 1, Webmin's internal caching for this URL is disabled.
2308 my ($host, $file, $dest, $error, $cbfunc, $user, $pass, $port, $nocache) = @_;
2310 if ($gconfig{'debug_what_net'}) {
2311 &webmin_debug_log('FTP', "host=$host port=$port file=$file".
2312 ($user ? " user=$user pass=$pass" : "").
2313 (ref($dest) ? "" : " dest=$dest"));
2317 if (&is_readonly_mode()) {
2318 if ($_[3]) { ${$_[3]} = "FTP connections not allowed in readonly mode";
2320 else { &error("FTP connections not allowed in readonly mode"); }
2323 # Check if we already have cached the URL
2324 my $url = "ftp://".$host.$file;
2325 my $cfile = &check_in_http_cache($url);
2326 if ($cfile && !$nocache) {
2327 # Yes! Copy to dest file or variable
2328 &$cbfunc(6, $url) if ($cbfunc);
2330 &open_readfile(CACHEFILE, $cfile);
2332 $$dest = <CACHEFILE>;
2336 ©_source_dest($cfile, $dest);
2341 # Actually download it
2342 $main::download_timed_out = undef;
2343 local $SIG{ALRM} = \&download_timeout;
2346 if ($gconfig{'ftp_proxy'} =~ /^http:\/\/(\S+):(\d+)/ && !&no_proxy($_[0])) {
2347 # download through http-style proxy
2349 if (&open_socket($1, $2, "SOCK", \$error)) {
2351 if ($main::download_timed_out) {
2353 if ($_[3]) { ${$_[3]} = $main::download_timed_out; return 0; }
2354 else { &error($main::download_timed_out); }
2356 my $esc = $_[1]; $esc =~ s/ /%20/g;
2357 my $up = "$_[5]:$_[6]\@" if ($_[5]);
2358 my $portstr = $port == 21 ? "" : ":$port";
2359 print SOCK "GET ftp://$up$_[0]$portstr$esc HTTP/1.0\r\n";
2360 print SOCK "User-agent: Webmin\r\n";
2361 if ($gconfig{'proxy_user'}) {
2362 my $auth = &encode_base64(
2363 "$gconfig{'proxy_user'}:$gconfig{'proxy_pass'}");
2364 $auth =~ tr/\r\n//d;
2365 print SOCK "Proxy-Authorization: Basic $auth\r\n";
2368 &complete_http_download({ 'fh' => "SOCK" }, $_[2], $_[3], $_[4],
2369 undef, undef, undef, undef, 0, $nocache);
2372 elsif (!$gconfig{'proxy_fallback'}) {
2374 if ($error) { $$error = $main::download_timed_out; return 0; }
2375 else { &error($main::download_timed_out); }
2380 # connect to host and login with real FTP protocol
2381 &open_socket($_[0], $port, "SOCK", $_[3]) || return 0;
2383 if ($main::download_timed_out) {
2384 if ($_[3]) { ${$_[3]} = $main::download_timed_out; return 0; }
2385 else { &error($main::download_timed_out); }
2387 &ftp_command("", 2, $_[3]) || return 0;
2389 # Login as supplied user
2390 my @urv = &ftp_command("USER $_[5]", [ 2, 3 ], $_[3]);
2392 if (int($urv[1]/100) == 3) {
2393 &ftp_command("PASS $_[6]", 2, $_[3]) || return 0;
2397 # Login as anonymous
2398 my @urv = &ftp_command("USER anonymous", [ 2, 3 ], $_[3]);
2400 if (int($urv[1]/100) == 3) {
2401 &ftp_command("PASS root\@".&get_system_hostname(), 2,
2405 &$cbfunc(1, 0) if ($cbfunc);
2408 # get the file size and tell the callback
2409 &ftp_command("TYPE I", 2, $_[3]) || return 0;
2410 my $size = &ftp_command("SIZE $_[1]", 2, $_[3]);
2411 defined($size) || return 0;
2413 &$cbfunc(2, int($size));
2417 my $pasv = &ftp_command("PASV", 2, $_[3]);
2418 defined($pasv) || return 0;
2419 $pasv =~ /\(([0-9,]+)\)/;
2420 @n = split(/,/ , $1);
2421 &open_socket("$n[0].$n[1].$n[2].$n[3]",
2422 $n[4]*256 + $n[5], "CON", $_[3]) || return 0;
2423 &ftp_command("RETR $_[1]", 1, $_[3]) || return 0;
2427 &open_tempfile(PFILE, ">$_[2]", 1);
2428 while(read(CON, $buf, 1024) > 0) {
2429 &print_tempfile(PFILE, $buf);
2430 $got += length($buf);
2431 &$cbfunc(3, $got) if ($cbfunc);
2433 &close_tempfile(PFILE);
2435 if ($got != $size) {
2436 if ($_[3]) { ${$_[3]} = "Download incomplete"; return 0; }
2437 else { &error("Download incomplete"); }
2439 &$cbfunc(4) if ($cbfunc);
2441 &ftp_command("", 2, $_[3]) || return 0;
2445 &ftp_command("QUIT", 2, $_[3]) || return 0;
2449 &write_to_http_cache($url, $dest);
2453 =head2 ftp_upload(host, file, srcfile, [&error], [&callback], [user, pass], [port])
2455 Upload data from a local file to an FTP site. The parameters are :
2457 =item host - FTP server hostname
2459 =item file - File on the FTP server to write to
2461 =item srcfile - File on the Webmin system to upload data from
2463 =item error - If set to a string ref, any error message is written into this string and the function returns 0 on failure, 1 on success. Otherwise, error is called on failure.
2465 =item callback - If set to a function ref, it will be called after each block of data is received. This is typically set to \&progress_callback, for printing upload progress.
2467 =item user - Username to login to the FTP server as. If missing, Webmin will login as anonymous.
2469 =item pass - Password for the username above.
2471 =item port - FTP server port number, which defaults to 21 if not set.
2478 if (&is_readonly_mode()) {
2479 if ($_[3]) { ${$_[3]} = "FTP connections not allowed in readonly mode";
2481 else { &error("FTP connections not allowed in readonly mode"); }
2484 $main::download_timed_out = undef;
2485 local $SIG{ALRM} = \&download_timeout;
2488 # connect to host and login
2489 &open_socket($_[0], $_[7] || 21, "SOCK", $_[3]) || return 0;
2491 if ($main::download_timed_out) {
2492 if ($_[3]) { ${$_[3]} = $main::download_timed_out; return 0; }
2493 else { &error($main::download_timed_out); }
2495 &ftp_command("", 2, $_[3]) || return 0;
2497 # Login as supplied user
2498 my @urv = &ftp_command("USER $_[5]", [ 2, 3 ], $_[3]);
2500 if (int($urv[1]/100) == 3) {
2501 &ftp_command("PASS $_[6]", 2, $_[3]) || return 0;
2505 # Login as anonymous
2506 my @urv = &ftp_command("USER anonymous", [ 2, 3 ], $_[3]);
2508 if (int($urv[1]/100) == 3) {
2509 &ftp_command("PASS root\@".&get_system_hostname(), 2,
2513 &$cbfunc(1, 0) if ($cbfunc);
2515 &ftp_command("TYPE I", 2, $_[3]) || return 0;
2517 # get the file size and tell the callback
2518 my @st = stat($_[2]);
2520 &$cbfunc(2, $st[7]);
2524 my $pasv = &ftp_command("PASV", 2, $_[3]);
2525 defined($pasv) || return 0;
2526 $pasv =~ /\(([0-9,]+)\)/;
2527 @n = split(/,/ , $1);
2528 &open_socket("$n[0].$n[1].$n[2].$n[3]", $n[4]*256 + $n[5], "CON", $_[3]) || return 0;
2529 &ftp_command("STOR $_[1]", 1, $_[3]) || return 0;
2534 while(read(PFILE, $buf, 1024) > 0) {
2536 $got += length($buf);
2537 &$cbfunc(3, $got) if ($cbfunc);
2541 if ($got != $st[7]) {
2542 if ($_[3]) { ${$_[3]} = "Upload incomplete"; return 0; }
2543 else { &error("Upload incomplete"); }
2545 &$cbfunc(4) if ($cbfunc);
2548 &ftp_command("", 2, $_[3]) || return 0;
2549 &ftp_command("QUIT", 2, $_[3]) || return 0;
2555 =head2 no_proxy(host)
2557 Checks if some host is on the no proxy list. For internal use by the
2558 http_download and ftp_download functions.
2563 my $ip = &to_ipaddress($_[0]);
2564 foreach my $n (split(/\s+/, $gconfig{'noproxy'})) {
2565 return 1 if ($_[0] =~ /\Q$n\E/ ||
2571 =head2 open_socket(host, port, handle, [&error])
2573 Open a TCP connection to some host and port, using a file handle. The
2576 =item host - Hostname or IP address to connect to.
2578 =item port - TCP port number.
2580 =item handle - A file handle name to use for the connection.
2582 =item error - A string reference to write any error message into. If not set, the error function is called on failure.
2587 my ($host, $port, $fh, $err) = @_;
2588 $fh = &callers_package($fh);
2590 if ($gconfig{'debug_what_net'}) {
2591 &webmin_debug_log('TCP', "host=$host port=$port");
2594 # Lookup IP address for the host. Try v4 first, and failing that v6
2596 my $proto = getprotobyname("tcp");
2597 if ($ip = &to_ipaddress($host)) {
2598 # Create IPv4 socket and connection
2599 if (!socket($fh, PF_INET(), SOCK_STREAM, $proto)) {
2600 my $msg = "Failed to create socket : $!";
2601 if ($err) { $$err = $msg; return 0; }
2602 else { &error($msg); }
2604 my $addr = inet_aton($ip);
2605 if ($gconfig{'bind_proxy'}) {
2606 # BIND to outgoing IP
2607 if (!bind($fh,pack_sockaddr_in(0, inet_aton($gconfig{'bind_proxy'})))) {
2608 my $msg = "Failed to bind to source address : $!";
2609 if ($err) { $$err = $msg; return 0; }
2610 else { &error($msg); }
2613 if (!connect($fh, pack_sockaddr_in($port, $addr))) {
2614 my $msg = "Failed to connect to $host:$port : $!";
2615 if ($err) { $$err = $msg; return 0; }
2616 else { &error($msg); }
2619 elsif ($ip = &to_ip6address($host)) {
2620 # Create IPv6 socket and connection
2621 if (!&supports_ipv6()) {
2622 $msg = "IPv6 connections are not supported";
2623 if ($err) { $$err = $msg; return 0; }
2624 else { &error($msg); }
2626 if (!socket($fh, Socket6::PF_INET6(), SOCK_STREAM, $proto)) {
2627 my $msg = "Failed to create IPv6 socket : $!";
2628 if ($err) { $$err = $msg; return 0; }
2629 else { &error($msg); }
2631 my $addr = inet_pton(Socket6::AF_INET6(), $ip);
2632 if (!connect($fh, pack_sockaddr_in6($port, $addr))) {
2633 my $msg = "Failed to IPv6 connect to $host:$port : $!";
2634 if ($err) { $$err = $msg; return 0; }
2635 else { &error($msg); }
2640 my $msg = "Failed to lookup IP address for $host";
2641 if ($err) { $$err = $msg; return 0; }
2642 else { &error($msg); }
2646 my $old = select($fh);
2652 =head2 download_timeout
2654 Called when a download times out. For internal use only.
2657 sub download_timeout
2659 $main::download_timed_out = "Download timed out";
2662 =head2 ftp_command(command, expected, [&error], [filehandle])
2664 Send an FTP command, and die if the reply is not what was expected. Mainly
2665 for internal use by the ftp_download and ftp_upload functions.
2670 my ($cmd, $expect, $err, $fh) = @_;
2672 $fh = &callers_package($fh);
2675 my $what = $cmd ne "" ? "<i>$cmd</i>" : "initial connection";
2677 print $fh "$cmd\r\n";
2680 if (!($line = <$fh>)) {
2682 if ($err) { $$err = "Failed to read reply to $what"; return undef; }
2683 else { &error("Failed to read reply to $what"); }
2685 $line =~ /^(...)(.)(.*)$/;
2688 foreach my $c (@$expect) {
2689 $found++ if (int($1/100) == $c);
2693 $found++ if (int($1/100) == $_[1]);
2697 if ($err) { $$err = "$what failed : $3"; return undef; }
2698 else { &error("$what failed : $3"); }
2703 # Need to skip extra stuff..
2705 if (!($line = <$fh>)) {
2707 if ($$err) { $$err = "Failed to read reply to $what";
2709 else { &error("Failed to read reply to $what"); }
2711 $line =~ /^(....)(.*)$/; $reply .= $2;
2712 if ($1 eq "$rcode ") { last; }
2716 return wantarray ? ($reply, $rcode) : $reply;
2719 =head2 to_ipaddress(hostname)
2721 Converts a hostname to an a.b.c.d format IP address, or returns undef if
2722 it cannot be resolved.
2727 if (&check_ipaddress($_[0])) {
2728 return $_[0]; # Already in v4 format
2730 elsif (&check_ip6address($_[0])) {
2731 return undef; # A v6 address cannot be converted to v4
2734 my $hn = gethostbyname($_[0]);
2735 return undef if (!$hn);
2736 local @ip = unpack("CCCC", $hn);
2737 return join("." , @ip);
2741 =head2 to_ip6address(hostname)
2743 Converts a hostname to IPv6 address, or returns undef if it cannot be resolved.
2748 if (&check_ip6address($_[0])) {
2749 return $_[0]; # Already in v6 format
2751 elsif (&check_ipaddress($_[0])) {
2752 return undef; # A v4 address cannot be v6
2754 elsif (!&supports_ipv6()) {
2755 return undef; # Cannot lookup
2758 # Perform IPv6 DNS lookup
2760 (undef, undef, undef, $inaddr) =
2761 getaddrinfo($_[0], undef, Socket6::AF_INET6(), SOCK_STREAM);
2762 return undef if (!$inaddr);
2764 (undef, $addr) = unpack_sockaddr_in6($inaddr);
2765 return inet_ntop(Socket6::AF_INET6(), $addr);
2769 =head2 to_hostname(ipv4|ipv6-address)
2771 Reverse-resolves an IPv4 or 6 address to a hostname
2777 if (&check_ip6address($addr) && &supports_ipv6()) {
2778 return gethostbyaddr(inet_pton(Socket6::AF_INET6(), $addr),
2779 Socket6::AF_INET6());
2782 return gethostbyaddr(inet_aton($addr), AF_INET);
2786 =head2 icons_table(&links, &titles, &icons, [columns], [href], [width], [height], &befores, &afters)
2788 Renders a 4-column table of icons. The useful parameters are :
2790 =item links - An array ref of link destination URLs for the icons.
2792 =item titles - An array ref of titles to appear under the icons.
2794 =item icons - An array ref of URLs for icon images.
2796 =item columns - Number of columns to layout the icons with. Defaults to 4.
2801 &load_theme_library();
2802 if (defined(&theme_icons_table)) {
2803 &theme_icons_table(@_);
2807 my $cols = $_[3] ? $_[3] : 4;
2808 my $per = int(100.0 / $cols);
2809 print "<table class='icons_table' width=100% cellpadding=5>\n";
2810 for(my $i=0; $i<@{$_[0]}; $i++) {
2811 if ($i%$cols == 0) { print "<tr>\n"; }
2812 print "<td width=$per% align=center valign=top>\n";
2813 &generate_icon($_[2]->[$i], $_[1]->[$i], $_[0]->[$i],
2814 ref($_[4]) ? $_[4]->[$i] : $_[4], $_[5], $_[6],
2815 $_[7]->[$i], $_[8]->[$i]);
2817 if ($i%$cols == $cols-1) { print "</tr>\n"; }
2819 while($i++%$cols) { print "<td width=$per%></td>\n"; $need_tr++; }
2820 print "</tr>\n" if ($need_tr);
2824 =head2 replace_file_line(file, line, [newline]*)
2826 Replaces one line in some file with 0 or more new lines. The parameters are :
2828 =item file - Full path to some file, like /etc/hosts.
2830 =item line - Line number to replace, starting from 0.
2832 =item newline - Zero or more lines to put into the file at the given line number. These must be newline-terminated strings.
2835 sub replace_file_line
2838 my $realfile = &translate_filename($_[0]);
2839 open(FILE, $realfile);
2842 if (@_ > 2) { splice(@lines, $_[1], 1, @_[2..$#_]); }
2843 else { splice(@lines, $_[1], 1); }
2844 &open_tempfile(FILE, ">$realfile");
2845 &print_tempfile(FILE, @lines);
2846 &close_tempfile(FILE);
2849 =head2 read_file_lines(file, [readonly])
2851 Returns a reference to an array containing the lines from some file. This
2852 array can be modified, and will be written out when flush_file_lines()
2853 is called. The parameters are :
2855 =item file - Full path to the file to read.
2857 =item readonly - Should be set 1 if the caller is only going to read the lines, and never write it out.
2861 $lref = read_file_lines("/etc/hosts");
2862 push(@$lref, "127.0.0.1 localhost");
2863 flush_file_lines("/etc/hosts");
2869 my ($package, $filename, $line) = caller;
2870 print STDERR "Missing file to read at ${package}::${filename} line $line\n";
2872 my $realfile = &translate_filename($_[0]);
2873 if (!$main::file_cache{$realfile}) {
2876 &webmin_debug_log('READ', $_[0]) if ($gconfig{'debug_what_read'});
2877 open(READFILE, $realfile);
2880 $eol = /\r\n$/ ? "\r\n" : "\n";
2886 $main::file_cache{$realfile} = \@lines;
2887 $main::file_cache_noflush{$realfile} = $_[1];
2888 $main::file_cache_eol{$realfile} = $eol || "\n";
2891 # Make read-write if currently readonly
2893 $main::file_cache_noflush{$realfile} = 0;
2896 return $main::file_cache{$realfile};
2899 =head2 flush_file_lines([file], [eol])
2901 Write out to a file previously read by read_file_lines to disk (except
2902 for those marked readonly). The parameters are :
2904 =item file - The file to flush out.
2906 =item eof - End-of-line character for each line. Defaults to \n.
2909 sub flush_file_lines
2913 local $trans = &translate_filename($_[0]);
2914 $main::file_cache{$trans} ||
2915 &error("flush_file_lines called on non-loaded file $trans");
2916 push(@files, $trans);
2919 @files = ( keys %main::file_cache );
2921 foreach my $f (@files) {
2922 my $eol = $_[1] || $main::file_cache_eol{$f} || "\n";
2923 if (!$main::file_cache_noflush{$f}) {
2924 no warnings; # XXX Bareword file handles should go away
2925 &open_tempfile(FLUSHFILE, ">$f");
2926 foreach my $line (@{$main::file_cache{$f}}) {
2927 (print FLUSHFILE $line,$eol) ||
2928 &error(&text("efilewrite", $f, $!));
2930 &close_tempfile(FLUSHFILE);
2932 delete($main::file_cache{$f});
2933 delete($main::file_cache_noflush{$f});
2937 =head2 unflush_file_lines(file)
2939 Clear the internal cache of some given file, previously read by read_file_lines.
2942 sub unflush_file_lines
2944 my $realfile = &translate_filename($_[0]);
2945 delete($main::file_cache{$realfile});
2946 delete($main::file_cache_noflush{$realfile});
2949 =head2 unix_user_input(fieldname, user, [form])
2951 Returns HTML for an input to select a Unix user. By default this is a text
2952 box with a user popup button next to it.
2957 if (defined(&theme_unix_user_input)) {
2958 return &theme_unix_user_input(@_);
2960 return "<input name=$_[0] size=13 value=\"$_[1]\"> ".
2961 &user_chooser_button($_[0], 0, $_[2] || 0)."\n";
2964 =head2 unix_group_input(fieldname, user, [form])
2966 Returns HTML for an input to select a Unix group. By default this is a text
2967 box with a group popup button next to it.
2970 sub unix_group_input
2972 if (defined(&theme_unix_group_input)) {
2973 return &theme_unix_group_input(@_);
2975 return "<input name=$_[0] size=13 value=\"$_[1]\"> ".
2976 &group_chooser_button($_[0], 0, $_[2] || 0)."\n";
2979 =head2 hlink(text, page, [module], [width], [height])
2981 Returns HTML for a link that when clicked on pops up a window for a Webmin
2982 help page. The parameters are :
2984 =item text - Text for the link.
2986 =item page - Help page code, such as 'intro'.
2988 =item module - Module the help page is in. Defaults to the current module.
2990 =item width - Width of the help popup window. Defaults to 600 pixels.
2992 =item height - Height of the help popup window. Defaults to 400 pixels.
2994 The actual help pages are in each module's help sub-directory, in files with
3000 if (defined(&theme_hlink)) {
3001 return &theme_hlink(@_);
3003 my $mod = $_[2] ? $_[2] : &get_module_name();
3004 my $width = $_[3] || $tconfig{'help_width'} || $gconfig{'help_width'} || 600;
3005 my $height = $_[4] || $tconfig{'help_height'} || $gconfig{'help_height'} || 400;
3006 return "<a onClick='window.open(\"$gconfig{'webprefix'}/help.cgi/$mod/$_[1]\", \"help\", \"toolbar=no,menubar=no,scrollbars=yes,width=$width,height=$height,resizable=yes\"); return false' href=\"$gconfig{'webprefix'}/help.cgi/$mod/$_[1]\">$_[0]</a>";
3009 =head2 user_chooser_button(field, multiple, [form])
3011 Returns HTML for a javascript button for choosing a Unix user or users.
3012 The parameters are :
3014 =item field - Name of the HTML field to place the username into.
3016 =item multiple - Set to 1 if multiple users can be selected.
3018 =item form - Index of the form on the page.
3021 sub user_chooser_button
3023 return undef if (!&supports_users());
3024 return &theme_user_chooser_button(@_)
3025 if (defined(&theme_user_chooser_button));
3026 my $form = defined($_[2]) ? $_[2] : 0;
3027 my $w = $_[1] ? 500 : 300;
3029 if ($_[1] && $gconfig{'db_sizeusers'}) {
3030 ($w, $h) = split(/x/, $gconfig{'db_sizeusers'});
3032 elsif (!$_[1] && $gconfig{'db_sizeuser'}) {
3033 ($w, $h) = split(/x/, $gconfig{'db_sizeuser'});
3035 return "<input type=button onClick='ifield = form.$_[0]; chooser = window.open(\"$gconfig{'webprefix'}/user_chooser.cgi?multi=$_[1]&user=\"+escape(ifield.value), \"chooser\", \"toolbar=no,menubar=no,scrollbars=yes,resizable=yes,width=$w,height=$h\"); chooser.ifield = ifield; window.ifield = ifield' value=\"...\">\n";
3038 =head2 group_chooser_button(field, multiple, [form])
3040 Returns HTML for a javascript button for choosing a Unix group or groups
3041 The parameters are :
3043 =item field - Name of the HTML field to place the group name into.
3045 =item multiple - Set to 1 if multiple groups can be selected.
3047 =item form - Index of the form on the page.
3050 sub group_chooser_button
3052 return undef if (!&supports_users());
3053 return &theme_group_chooser_button(@_)
3054 if (defined(&theme_group_chooser_button));
3055 my $form = defined($_[2]) ? $_[2] : 0;
3056 my $w = $_[1] ? 500 : 300;
3058 if ($_[1] && $gconfig{'db_sizeusers'}) {
3059 ($w, $h) = split(/x/, $gconfig{'db_sizeusers'});
3061 elsif (!$_[1] && $gconfig{'db_sizeuser'}) {
3062 ($w, $h) = split(/x/, $gconfig{'db_sizeuser'});
3064 return "<input type=button onClick='ifield = form.$_[0]; chooser = window.open(\"$gconfig{'webprefix'}/group_chooser.cgi?multi=$_[1]&group=\"+escape(ifield.value), \"chooser\", \"toolbar=no,menubar=no,scrollbars=yes,resizable=yes,width=$w,height=$h\"); chooser.ifield = ifield; window.ifield = ifield' value=\"...\">\n";
3067 =head2 foreign_check(module, [api-only])
3069 Checks if some other module exists and is supported on this OS. The parameters
3072 =item module - Name of the module to check.
3074 =item api-only - Set to 1 if you just want to check if the module provides an API that others can call, instead of the full web UI.
3079 my ($mod, $api) = @_;
3081 my $mdir = &module_root_directory($mod);
3082 &read_file_cached("$mdir/module.info", \%minfo) || return 0;
3083 return &check_os_support(\%minfo, undef, undef, $api);
3086 =head2 foreign_exists(module)
3088 Checks if some other module exists. The module parameter is the short module
3094 my $mdir = &module_root_directory($_[0]);
3095 return -r "$mdir/module.info";
3098 =head2 foreign_available(module)
3100 Returns 1 if some module is installed, and acessible to the current user. The
3101 module parameter is the module directory name.
3104 sub foreign_available
3106 return 0 if (!&foreign_check($_[0]) &&
3107 !$gconfig{'available_even_if_no_support'});
3108 my %foreign_module_info = &get_module_info($_[0]);
3110 # Check list of allowed modules
3112 &read_acl(\%acl, undef, [ $base_remote_user ]);
3113 return 0 if (!$acl{$base_remote_user,$_[0]} &&
3114 !$acl{$base_remote_user,'*'});
3116 # Check for usermod restrictions
3117 my @usermods = &list_usermods();
3118 return 0 if (!&available_usermods( [ \%foreign_module_info ], \@usermods));
3120 if (&get_product_name() eq "webmin") {
3121 # Check if the user has any RBAC privileges in this module
3122 if (&supports_rbac($_[0]) &&
3123 &use_rbac_module_acl(undef, $_[0])) {
3124 # RBAC is enabled for this user and module - check if he
3126 my $rbacs = &get_rbac_module_acl($remote_user, $_[0]);
3127 return 0 if (!$rbacs);
3129 elsif ($gconfig{'rbacdeny_'.$base_remote_user}) {
3130 # If denying access to modules not specifically allowed by
3131 # RBAC, then prevent access
3136 # Check readonly support
3137 if (&is_readonly_mode()) {
3138 return 0 if (!$foreign_module_info{'readonly'});
3141 # Check if theme vetos
3142 if (defined(&theme_foreign_available)) {
3143 return 0 if (!&theme_foreign_available($_[0]));
3146 # Check if licence module vetos
3147 if ($main::licence_module) {
3148 return 0 if (!&foreign_call($main::licence_module,
3149 "check_module_licence", $_[0]));
3155 =head2 foreign_require(module, [file], [package])
3157 Brings in functions from another module, and places them in the Perl namespace
3158 with the same name as the module. The parameters are :
3160 =item module - The source module's directory name, like sendmail.
3162 =item file - The API file in that module, like sendmail-lib.pl. If missing, all API files are loaded.
3164 =item package - Perl package to place the module's functions and global variables in.
3166 If the original module name contains dashes, they will be replaced with _ in
3172 my ($mod, $file, $pkg) = @_;
3173 $pkg ||= $mod || "global";
3174 $pkg =~ s/[^A-Za-z0-9]/_/g;
3177 push(@files, $file);
3181 my %minfo = &get_module_info($mod);
3182 if ($minfo{'library'}) {
3183 @files = split(/\s+/, $minfo{'library'});
3186 @files = ( $mod."-lib.pl" );
3189 @files = grep { !$main::done_foreign_require{$pkg,$_} } @files;
3190 return 1 if (!@files);
3191 foreach my $f (@files) {
3192 $main::done_foreign_require{$pkg,$f}++;
3195 my $mdir = &module_root_directory($mod);
3196 @INC = &unique($mdir, @INC);
3197 -d $mdir || &error("Module $mod does not exist");
3198 if (!&get_module_name() && $mod) {
3201 my $old_fmn = $ENV{'FOREIGN_MODULE_NAME'};
3202 my $old_frd = $ENV{'FOREIGN_ROOT_DIRECTORY'};
3203 my $code = "package $pkg; ".
3204 "\$ENV{'FOREIGN_MODULE_NAME'} = '$mod'; ".
3205 "\$ENV{'FOREIGN_ROOT_DIRECTORY'} = '$root_directory'; ";
3206 foreach my $f (@files) {
3207 $code .= "do '$mdir/$f' || die \$@; ";
3210 if (defined($old_fmn)) {
3211 $ENV{'FOREIGN_MODULE_NAME'} = $old_fmn;
3214 delete($ENV{'FOREIGN_MODULE_NAME'});
3216 if (defined($old_frd)) {
3217 $ENV{'FOREIGN_ROOT_DIRECTORY'} = $old_frd;
3220 delete($ENV{'FOREIGN_ROOT_DIRECTORY'});
3223 if ($@) { &error("Require $mod/$files[0] failed : <pre>$@</pre>"); }
3227 =head2 foreign_call(module, function, [arg]*)
3229 Call a function in another module. The module parameter is the target module
3230 directory name, function is the perl sub to call, and the remaining parameters
3231 are the arguments. However, unless you need to call a function whose name
3232 is dynamic, it is better to use Perl's cross-module function call syntax
3233 like module::function(args).
3238 my $pkg = $_[0] || "global";
3239 $pkg =~ s/[^A-Za-z0-9]/_/g;
3240 my @args = @_[2 .. @_-1];
3241 $main::foreign_args = \@args;
3242 my @rv = eval <<EOF;
3244 &$_[1](\@{\$main::foreign_args});
3246 if ($@) { &error("$_[0]::$_[1] failed : $@"); }
3247 return wantarray ? @rv : $rv[0];
3250 =head2 foreign_config(module, [user-config])
3252 Get the configuration from another module, and return it as a hash. If the
3253 user-config parameter is set to 1, returns the Usermin user-level preferences
3254 for the current user instead.
3259 my ($mod, $uc) = @_;
3262 &read_file_cached("$root_directory/$mod/defaultuconfig", \%fconfig);
3263 &read_file_cached("$config_directory/$mod/uconfig", \%fconfig);
3264 &read_file_cached("$user_config_directory/$mod/config", \%fconfig);
3267 &read_file_cached("$config_directory/$mod/config", \%fconfig);
3272 =head2 foreign_installed(module, mode)
3274 Checks if the server for some module is installed, and possibly also checks
3275 if the module has been configured by Webmin.
3276 For mode 1, returns 2 if the server is installed and configured for use by
3277 Webmin, 1 if installed but not configured, or 0 otherwise.
3278 For mode 0, returns 1 if installed, 0 if not.
3279 If the module does not provide an install_check.pl script, assumes that
3280 the server is installed.
3283 sub foreign_installed
3285 my ($mod, $configured) = @_;
3286 if (defined($main::foreign_installed_cache{$mod,$configured})) {
3288 return $main::foreign_installed_cache{$mod,$configured};
3292 if (!&foreign_check($mod)) {
3297 my $mdir = &module_root_directory($mod);
3298 if (!-r "$mdir/install_check.pl") {
3299 # Not known, assume OK
3300 $rv = $configured ? 2 : 1;
3303 # Call function to check
3304 &foreign_require($mod, "install_check.pl");
3305 $rv = &foreign_call($mod, "is_installed", $configured);
3308 $main::foreign_installed_cache{$mod,$configured} = $rv;
3313 =head2 foreign_defined(module, function)
3315 Returns 1 if some function is defined in another module. In general, it is
3316 simpler to use the syntax &defined(module::function) instead.
3322 $pkg =~ s/[^A-Za-z0-9]/_/g;
3323 my $func = "${pkg}::$_[1]";
3324 return defined(&$func);
3327 =head2 get_system_hostname([short], [skip-file])
3329 Returns the hostname of this system. If the short parameter is set to 1,
3330 then the domain name is not prepended - otherwise, Webmin will attempt to get
3331 the fully qualified hostname, like foo.example.com.
3334 sub get_system_hostname
3337 my $skipfile = $_[1];
3338 if (!$main::get_system_hostname[$m]) {
3339 if ($gconfig{'os_type'} ne 'windows') {
3340 # Try some common Linux hostname files first
3343 # Never get from file
3345 elsif ($gconfig{'os_type'} eq 'redhat-linux') {
3347 &read_env_file("/etc/sysconfig/network", \%nc);
3348 if ($nc{'HOSTNAME'}) {
3349 $fromfile = $nc{'HOSTNAME'};
3352 elsif ($gconfig{'os_type'} eq 'debian-linux') {
3353 my $hn = &read_file_contents("/etc/hostname");
3359 elsif ($gconfig{'os_type'} eq 'open-linux') {
3360 my $hn = &read_file_contents("/etc/HOSTNAME");
3366 elsif ($gconfig{'os_type'} eq 'solaris') {
3367 my $hn = &read_file_contents("/etc/nodename");
3374 # If we found a hostname in a file, use it
3375 if ($fromfile && ($m || $fromfile =~ /\./)) {
3377 $fromfile =~ s/\..*$//;
3379 $main::get_system_hostname[$m] = $fromfile;
3383 # Can use hostname command on Unix
3384 &execute_command("hostname", undef,
3385 \$main::get_system_hostname[$m], undef, 0, 1);
3386 chop($main::get_system_hostname[$m]);
3388 eval "use Sys::Hostname";
3390 $main::get_system_hostname[$m] = eval "hostname()";
3392 if ($@ || !$main::get_system_hostname[$m]) {
3393 $main::get_system_hostname[$m] = "UNKNOWN";
3396 elsif ($main::get_system_hostname[$m] !~ /\./ &&
3397 $gconfig{'os_type'} =~ /linux$/ &&
3398 !$gconfig{'no_hostname_f'} && !$_[0]) {
3399 # Try with -f flag to get fully qualified name
3401 my $ex = &execute_command("hostname -f", undef, \$flag,
3404 if ($ex || $flag eq "") {
3405 # -f not supported! We have probably set the
3406 # hostname to just '-f'. Fix the problem
3409 &execute_command("hostname ".
3410 quotemeta($main::get_system_hostname[$m]),
3411 undef, undef, undef, 0, 1);
3415 $main::get_system_hostname[$m] = $flag;
3420 # On Windows, try computername environment variable
3421 return $ENV{'computername'} if ($ENV{'computername'});
3422 return $ENV{'COMPUTERNAME'} if ($ENV{'COMPUTERNAME'});
3424 # Fall back to net name command
3425 my $out = `net name 2>&1`;
3426 if ($out =~ /\-+\r?\n(\S+)/) {
3427 $main::get_system_hostname[$m] = $1;
3430 $main::get_system_hostname[$m] = "windows";
3434 return $main::get_system_hostname[$m];
3437 =head2 get_webmin_version
3439 Returns the version of Webmin currently being run, such as 1.450.
3442 sub get_webmin_version
3444 if (!$get_webmin_version) {
3445 open(VERSION, "$root_directory/version") || return 0;
3446 ($get_webmin_version = <VERSION>) =~ tr/\r|\n//d;
3449 return $get_webmin_version;
3452 =head2 get_module_acl([user], [module], [no-rbac], [no-default])
3454 Returns a hash containing access control options for the given user and module.
3455 By default the current username and module name are used. If the no-rbac flag
3456 is given, the permissions will not be updated based on the user's RBAC role
3457 (as seen on Solaris). If the no-default flag is given, default permissions for
3458 the module will not be included.
3463 my $u = defined($_[0]) ? $_[0] : $base_remote_user;
3464 my $m = defined($_[1]) ? $_[1] : &get_module_name();
3465 my $mdir = &module_root_directory($m);
3468 # Read default ACL first, to be overridden by per-user settings
3469 &read_file_cached("$mdir/defaultacl", \%rv);
3471 # If this isn't a master admin user, apply the negative permissions
3472 # so that he doesn't un-expectedly gain access to new features
3474 &read_file_cached("$config_directory/$u.acl", \%gaccess);
3475 if ($gaccess{'negative'}) {
3476 &read_file_cached("$mdir/negativeacl", \%rv);
3480 if (!$_[2] && &supports_rbac($m) && &use_rbac_module_acl($u, $m)) {
3481 # RBAC overrides exist for this user in this module
3482 my $rbac = &get_rbac_module_acl(
3483 defined($_[0]) ? $_[0] : $remote_user, $m);
3484 foreach my $r (keys %$rbac) {
3485 $rv{$r} = $rbac->{$r};
3488 elsif ($gconfig{"risk_$u"} && $m) {
3489 # ACL is defined by user's risk level
3490 my $rf = $gconfig{"risk_$u"}.'.risk';
3491 &read_file_cached("$mdir/$rf", \%rv);
3493 my $sf = $gconfig{"skill_$u"}.'.skill';
3494 &read_file_cached("$mdir/$sf", \%rv);
3497 # Use normal Webmin ACL, if a user is set
3498 my $userdb = &get_userdb_string();
3500 if ($userdb && ($u ne $base_remote_user || $remote_user_proto)) {
3501 # Look for this user in the user/group DB, if one is defined
3502 # and if the user might be in the DB
3503 my ($dbh, $proto, $prefix, $args) = &connect_userdb($userdb);
3504 ref($dbh) || &error(&text('euserdbacl', $dbh));
3505 if ($proto eq "mysql" || $proto eq "postgresql") {
3506 # Find the user in the SQL DB
3507 my $cmd = $dbh->prepare(
3508 "select id from webmin_user where name = ?");
3509 $cmd && $cmd->execute($u) ||
3510 &error(&text('euserdbacl', $dbh->errstr));
3511 my ($id) = $cmd->fetchrow();
3512 $foundindb = 1 if (defined($id));
3515 # Fetch ACLs with SQL
3517 my $cmd = $dbh->prepare(
3518 "select attr,value from webmin_user_acl ".
3519 "where id = ? and module = ?");
3520 $cmd && $cmd->execute($id, $m) ||
3521 &error(&text('euserdbacl', $dbh->errstr));
3522 while(my ($a, $v) = $cmd->fetchrow()) {
3528 elsif ($proto eq "ldap") {
3530 my $rv = $dbh->search(
3532 filter => '(&(cn='.$u.')(objectClass='.
3533 $args->{'userclass'}.'))',
3535 if (!$rv || $rv->code) {
3536 &error(&text('euserdbacl',
3537 $rv ? $rv->error : "Unknown error"));
3539 my ($user) = $rv->all_entries;
3541 # Find ACL sub-object for the module
3542 my $ldapm = $m || "global";
3544 my $rv = $dbh->search(
3545 base => $user->dn(),
3546 filter => '(cn='.$ldapm.')',
3548 if (!$rv || $rv->code) {
3549 &error(&text('euserdbacl',
3550 $rv ? $rv->error : "Unknown error"));
3552 my ($acl) = $rv->all_entries;
3554 foreach my $av ($acl->get_value(
3555 'webminAclEntry')) {
3556 my ($a, $v) = split(/=/, $av,2);
3562 &disconnect_userdb($userdb, $dbh);
3566 # Read from local files
3567 &read_file_cached("$config_directory/$m/$u.acl", \%rv);
3568 if ($remote_user ne $base_remote_user && !defined($_[0])) {
3570 "$config_directory/$m/$remote_user.acl",\%rv);
3574 if ($tconfig{'preload_functions'}) {
3575 &load_theme_library();
3577 if (defined(&theme_get_module_acl)) {
3578 %rv = &theme_get_module_acl($u, $m, \%rv);
3583 =head2 get_group_module_acl(group, [module], [no-default])
3585 Returns the ACL for a Webmin group, in an optional module (which defaults to
3586 the current module).
3589 sub get_group_module_acl
3592 my $m = defined($_[1]) ? $_[1] : &get_module_name();
3593 my $mdir = &module_root_directory($m);
3596 &read_file_cached("$mdir/defaultacl", \%rv);
3599 my $userdb = &get_userdb_string();
3602 # Look for this group in the user/group DB
3603 my ($dbh, $proto, $prefix, $args) = &connect_userdb($userdb);
3604 ref($dbh) || &error(&text('egroupdbacl', $dbh));
3605 if ($proto eq "mysql" || $proto eq "postgresql") {
3606 # Find the group in the SQL DB
3607 my $cmd = $dbh->prepare(
3608 "select id from webmin_group where name = ?");
3609 $cmd && $cmd->execute($g) ||
3610 &error(&text('egroupdbacl', $dbh->errstr));
3611 my ($id) = $cmd->fetchrow();
3612 $foundindb = 1 if (defined($id));
3615 # Fetch ACLs with SQL
3617 my $cmd = $dbh->prepare(
3618 "select attr,value from webmin_group_acl ".
3619 "where id = ? and module = ?");
3620 $cmd && $cmd->execute($id, $m) ||
3621 &error(&text('egroupdbacl', $dbh->errstr));
3622 while(my ($a, $v) = $cmd->fetchrow()) {
3628 elsif ($proto eq "ldap") {
3629 # Find group in LDAP
3630 my $rv = $dbh->search(
3632 filter => '(&(cn='.$g.')(objectClass='.
3633 $args->{'groupclass'}.'))',
3635 if (!$rv || $rv->code) {
3636 &error(&text('egroupdbacl',
3637 $rv ? $rv->error : "Unknown error"));
3639 my ($group) = $rv->all_entries;
3641 # Find ACL sub-object for the module
3642 my $ldapm = $m || "global";
3644 my $rv = $dbh->search(
3645 base => $group->dn(),
3646 filter => '(cn='.$ldapm.')',
3648 if (!$rv || $rv->code) {
3649 &error(&text('egroupdbacl',
3650 $rv ? $rv->error : "Unknown error"));
3652 my ($acl) = $rv->all_entries;
3654 foreach my $av ($acl->get_value(
3655 'webminAclEntry')) {
3656 my ($a, $v) = split(/=/, $av, 2);
3662 &disconnect_userdb($userdb, $dbh);
3665 # Read from local files
3666 &read_file_cached("$config_directory/$m/$g.gacl", \%rv);
3668 if (defined(&theme_get_module_acl)) {
3669 %rv = &theme_get_module_acl($g, $m, \%rv);
3674 =head2 save_module_acl(&acl, [user], [module], [never-update-group])
3676 Updates the acl hash for some user and module. The parameters are :
3678 =item acl - Hash reference for the new access control options, or undef to clear
3680 =item user - User to update, defaulting to the current user.
3682 =item module - Module to update, defaulting to the caller.
3684 =item never-update-group - Never update the user's group's ACL
3689 my $u = defined($_[1]) ? $_[1] : $base_remote_user;
3690 my $m = defined($_[2]) ? $_[2] : &get_module_name();
3691 if (!$_[3] && &foreign_check("acl")) {
3692 # Check if this user is a member of a group, and if he gets the
3693 # module from a group. If so, update its ACL as well
3694 &foreign_require("acl", "acl-lib.pl");
3696 foreach my $g (&acl::list_groups()) {
3697 if (&indexof($u, @{$g->{'members'}}) >= 0 &&
3698 &indexof($m, @{$g->{'modules'}}) >= 0) {
3704 &save_group_module_acl($_[0], $group->{'name'}, $m);
3708 my $userdb = &get_userdb_string();
3710 if ($userdb && ($u ne $base_remote_user || $remote_user_proto)) {
3711 # Look for this user in the user/group DB
3712 my ($dbh, $proto, $prefix, $args) = &connect_userdb($userdb);
3713 ref($dbh) || &error(&text('euserdbacl', $dbh));
3714 if ($proto eq "mysql" || $proto eq "postgresql") {
3715 # Find the user in the SQL DB
3716 my $cmd = $dbh->prepare(
3717 "select id from webmin_user where name = ?");
3718 $cmd && $cmd->execute($u) ||
3719 &error(&text('euserdbacl2', $dbh->errstr));
3720 my ($id) = $cmd->fetchrow();
3721 $foundindb = 1 if (defined($id));
3724 # Replace ACLs for user
3726 my $cmd = $dbh->prepare("delete from webmin_user_acl ".
3727 "where id = ? and module = ?");
3728 $cmd && $cmd->execute($id, $m) ||
3729 &error(&text('euserdbacl', $dbh->errstr));
3732 my $cmd = $dbh->prepare(
3733 "insert into webmin_user_acl ".
3734 "(id,module,attr,value) values (?,?,?,?)");
3735 $cmd || &error(&text('euserdbacl2',
3737 foreach my $a (keys %{$_[0]}) {
3738 $cmd->execute($id,$m,$a,$_[0]->{$a}) ||
3739 &error(&text('euserdbacl2',
3746 elsif ($proto eq "ldap") {
3747 # Find the user in LDAP
3748 my $rv = $dbh->search(
3750 filter => '(&(cn='.$u.')(objectClass='.
3751 $args->{'userclass'}.'))',
3753 if (!$rv || $rv->code) {
3754 &error(&text('euserdbacl',
3755 $rv ? $rv->error : "Unknown error"));
3757 my ($user) = $rv->all_entries;
3760 # Find the ACL sub-object for the module
3762 my $ldapm = $m || "global";
3763 my $rv = $dbh->search(
3764 base => $user->dn(),
3765 filter => '(cn='.$ldapm.')',
3767 if (!$rv || $rv->code) {
3768 &error(&text('euserdbacl',
3769 $rv ? $rv->error : "Unknown error"));
3771 my ($acl) = $rv->all_entries;
3774 foreach my $a (keys %{$_[0]}) {
3775 push(@al, $a."=".$_[0]->{$a});
3779 $rv = $dbh->modify($acl->dn(),
3780 replace => { "webminAclEntry", \@al });
3784 my @attrs = ( "cn", $ldapm,
3785 "objectClass", "webminAcl",
3786 "webminAclEntry", \@al );
3787 $rv = $dbh->add("cn=".$ldapm.",".$user->dn(),
3790 if (!$rv || $rv->code) {
3791 &error(&text('euserdbacl2',
3792 $rv ? $rv->error : "Unknown error"));
3796 &disconnect_userdb($userdb, $dbh);
3800 # Save ACL to local file
3801 if (!-d "$config_directory/$m") {
3802 mkdir("$config_directory/$m", 0755);
3805 &write_file("$config_directory/$m/$u.acl", $_[0]);
3808 &unlink_file("$config_directory/$m/$u.acl");
3813 =head2 save_group_module_acl(&acl, group, [module], [never-update-group])
3815 Updates the acl hash for some group and module. The parameters are :
3817 =item acl - Hash reference for the new access control options.
3819 =item group - Group name to update.
3821 =item module - Module to update, defaulting to the caller.
3823 =item never-update-group - Never update the parent group's ACL
3826 sub save_group_module_acl
3829 my $m = defined($_[2]) ? $_[2] : &get_module_name();
3830 if (!$_[3] && &foreign_check("acl")) {
3831 # Check if this group is a member of a group, and if it gets the
3832 # module from a group. If so, update the parent ACL as well
3833 &foreign_require("acl", "acl-lib.pl");
3835 foreach my $pg (&acl::list_groups()) {
3836 if (&indexof('@'.$g, @{$pg->{'members'}}) >= 0 &&
3837 &indexof($m, @{$pg->{'modules'}}) >= 0) {
3843 &save_group_module_acl($_[0], $group->{'name'}, $m);
3847 my $userdb = &get_userdb_string();
3850 # Look for this group in the user/group DB
3851 my ($dbh, $proto, $prefix, $args) = &connect_userdb($userdb);
3852 ref($dbh) || &error(&text('egroupdbacl', $dbh));
3853 if ($proto eq "mysql" || $proto eq "postgresql") {
3854 # Find the group in the SQL DB
3855 my $cmd = $dbh->prepare(
3856 "select id from webmin_group where name = ?");
3857 $cmd && $cmd->execute($g) ||
3858 &error(&text('egroupdbacl2', $dbh->errstr));
3859 my ($id) = $cmd->fetchrow();
3860 $foundindb = 1 if (defined($id));
3863 # Replace ACLs for group
3865 my $cmd = $dbh->prepare("delete from webmin_group_acl ".
3866 "where id = ? and module = ?");
3867 $cmd && $cmd->execute($id, $m) ||
3868 &error(&text('egroupdbacl', $dbh->errstr));
3871 my $cmd = $dbh->prepare(
3872 "insert into webmin_group_acl ".
3873 "(id,module,attr,value) values (?,?,?,?)");
3874 $cmd || &error(&text('egroupdbacl2',
3876 foreach my $a (keys %{$_[0]}) {
3877 $cmd->execute($id,$m,$a,$_[0]->{$a}) ||
3878 &error(&text('egroupdbacl2',
3885 elsif ($proto eq "ldap") {
3886 # Find the group in LDAP
3887 my $rv = $dbh->search(
3889 filter => '(&(cn='.$g.')(objectClass='.
3890 $args->{'groupclass'}.'))',
3892 if (!$rv || $rv->code) {
3893 &error(&text('egroupdbacl',
3894 $rv ? $rv->error : "Unknown error"));
3896 my ($group) = $rv->all_entries;
3898 my $ldapm = $m || "global";
3900 # Find the ACL sub-object for the module
3902 my $rv = $dbh->search(
3903 base => $group->dn(),
3904 filter => '(cn='.$ldapm.')',
3906 if (!$rv || $rv->code) {
3907 &error(&text('egroupdbacl',
3908 $rv ? $rv->error : "Unknown error"));
3910 my ($acl) = $rv->all_entries;
3913 foreach my $a (keys %{$_[0]}) {
3914 push(@al, $a."=".$_[0]->{$a});
3918 $rv = $dbh->modify($acl->dn(),
3919 replace => { "webminAclEntry", \@al });
3923 my @attrs = ( "cn", $ldapm,
3924 "objectClass", "webminAcl",
3925 "webminAclEntry", \@al );
3926 $rv = $dbh->add("cn=".$ldapm.",".$group->dn(),
3929 if (!$rv || $rv->code) {
3930 &error(&text('egroupdbacl2',
3931 $rv ? $rv->error : "Unknown error"));
3935 &disconnect_userdb($userdb, $dbh);
3939 # Save ACL to local file
3940 if (!-d "$config_directory/$m") {
3941 mkdir("$config_directory/$m", 0755);
3944 &write_file("$config_directory/$m/$g.gacl", $_[0]);
3947 &unlink_file("$config_directory/$m/$g.gacl");
3954 This function must be called by all Webmin CGI scripts, either directly or
3955 indirectly via a per-module lib.pl file. It performs a number of initialization
3956 and housekeeping tasks, such as working out the module name, checking that the
3957 current user has access to the module, and populating global variables. Some
3958 of the variables set include :
3960 =item $config_directory - Base Webmin config directory, typically /etc/webmin
3962 =item $var_directory - Base logs directory, typically /var/webmin
3964 =item %config - Per-module configuration.
3966 =item %gconfig - Global configuration.
3968 =item $scriptname - Base name of the current perl script.
3970 =item $module_name - The name of the current module.
3972 =item $module_config_directory - The config directory for this module.
3974 =item $module_config_file - The config file for this module.
3976 =item $module_root_directory - This module's code directory.
3978 =item $webmin_logfile - The detailed logfile for webmin.
3980 =item $remote_user - The actual username used to login to webmin.
3982 =item $base_remote_user - The username whose permissions are in effect.
3984 =item $current_theme - The theme currently in use.
3986 =item $root_directory - The first root directory of this webmin install.
3988 =item @root_directories - All root directories for this webmin install.
3993 # Record first process ID that called this, so we know when it exited to clean
3995 $main::initial_process_id ||= $$;
3997 # Configuration and spool directories
3998 if (!defined($ENV{'WEBMIN_CONFIG'})) {
3999 die "WEBMIN_CONFIG not set";
4001 $config_directory = $ENV{'WEBMIN_CONFIG'};
4002 if (!defined($ENV{'WEBMIN_VAR'})) {
4003 open(VARPATH, "$config_directory/var-path");
4004 chop($var_directory = <VARPATH>);
4008 $var_directory = $ENV{'WEBMIN_VAR'};
4010 $main::http_cache_directory = $ENV{'WEBMIN_VAR'}."/cache";
4011 $main::default_debug_log_file = $ENV{'WEBMIN_VAR'}."/webmin.debug";
4013 if ($ENV{'SESSION_ID'}) {
4014 # Hide this variable from called programs, but keep it for internal use
4015 $main::session_id = $ENV{'SESSION_ID'};
4016 delete($ENV{'SESSION_ID'});
4018 if ($ENV{'REMOTE_PASS'}) {
4019 # Hide the password too
4020 $main::remote_pass = $ENV{'REMOTE_PASS'};
4021 delete($ENV{'REMOTE_PASS'});
4024 if ($> == 0 && $< != 0 && !$ENV{'FOREIGN_MODULE_NAME'}) {
4025 # Looks like we are running setuid, but the real UID hasn't been set.
4026 # Do so now, so that executed programs don't get confused
4031 # Read the webmin global config file. This contains the OS type and version,
4032 # OS specific configuration and global options such as proxy servers
4033 $config_file = "$config_directory/config";
4035 &read_file_cached($config_file, \%gconfig);
4036 $null_file = $gconfig{'os_type'} eq 'windows' ? "NUL" : "/dev/null";
4037 $path_separator = $gconfig{'os_type'} eq 'windows' ? ';' : ':';
4039 # Work out of this is a web, command line or cron job
4040 if (!$main::webmin_script_type) {
4041 if ($ENV{'SCRIPT_NAME'}) {
4043 $main::webmin_script_type = 'web';
4046 # Cron jobs have no TTY
4047 if ($gconfig{'os_type'} eq 'windows' ||
4048 open(DEVTTY, ">/dev/tty")) {
4049 $main::webmin_script_type = 'cmd';
4053 $main::webmin_script_type = 'cron';
4058 # If debugging is enabled, open the debug log
4059 if ($gconfig{'debug_enabled'} && !$main::opened_debug_log++) {
4060 my $dlog = $gconfig{'debug_file'} || $main::default_debug_log_file;
4061 if ($gconfig{'debug_size'}) {
4062 my @st = stat($dlog);
4063 if ($st[7] > $gconfig{'debug_size'}) {
4064 rename($dlog, $dlog.".0");
4067 open(main::DEBUGLOG, ">>$dlog");
4068 $main::opened_debug_log = 1;
4070 if ($gconfig{'debug_what_start'}) {
4071 my $script_name = $0 =~ /([^\/]+)$/ ? $1 : '-';
4072 $main::debug_log_start_time = time();
4073 &webmin_debug_log("START", "script=$script_name");
4074 $main::debug_log_start_module = $module_name;
4078 # Set PATH and LD_LIBRARY_PATH
4079 if ($gconfig{'path'}) {
4080 if ($gconfig{'syspath'}) {
4082 $ENV{'PATH'} = $gconfig{'path'};
4086 $ENV{'PATH'} = $gconfig{'path'}.$path_separator.$ENV{'PATH'};
4089 $ENV{$gconfig{'ld_env'}} = $gconfig{'ld_path'} if ($gconfig{'ld_env'});
4091 # Set http_proxy and ftp_proxy environment variables, based on Webmin settings
4092 if ($gconfig{'http_proxy'}) {
4093 $ENV{'http_proxy'} = $gconfig{'http_proxy'};
4095 if ($gconfig{'ftp_proxy'}) {
4096 $ENV{'ftp_proxy'} = $gconfig{'ftp_proxy'};
4098 if ($gconfig{'noproxy'}) {
4099 $ENV{'no_proxy'} = $gconfig{'noproxy'};
4102 # Find all root directories
4104 if (&get_miniserv_config(\%miniserv)) {
4105 @root_directories = ( $miniserv{'root'} );
4106 for($i=0; defined($miniserv{"extraroot_$i"}); $i++) {
4107 push(@root_directories, $miniserv{"extraroot_$i"});
4111 # Work out which module we are in, and read the per-module config file
4112 $0 =~ s/\\/\//g; # Force consistent path on Windows
4113 if (defined($ENV{'FOREIGN_MODULE_NAME'})) {
4114 # In a foreign call - use the module name given
4115 $root_directory = $ENV{'FOREIGN_ROOT_DIRECTORY'};
4116 $module_name = $ENV{'FOREIGN_MODULE_NAME'};
4117 @root_directories = ( $root_directory ) if (!@root_directories);
4119 elsif ($ENV{'SCRIPT_NAME'}) {
4120 my $sn = $ENV{'SCRIPT_NAME'};
4121 $sn =~ s/^$gconfig{'webprefix'}//
4122 if (!$gconfig{'webprefixnoredir'});
4123 if ($sn =~ /^\/([^\/]+)\//) {
4124 # Get module name from CGI path
4127 if ($ENV{'SERVER_ROOT'}) {
4128 $root_directory = $ENV{'SERVER_ROOT'};
4130 elsif ($ENV{'SCRIPT_FILENAME'}) {
4131 $root_directory = $ENV{'SCRIPT_FILENAME'};
4132 $root_directory =~ s/$sn$//;
4134 @root_directories = ( $root_directory ) if (!@root_directories);
4137 # Get root directory from miniserv.conf, and deduce module name from $0
4138 $root_directory = $root_directories[0];
4140 foreach my $r (@root_directories) {
4141 if ($0 =~ /^$r\/([^\/]+)\/[^\/]+$/i) {
4142 # Under a module directory
4147 elsif ($0 =~ /^$root_directory\/[^\/]+$/i) {
4153 &error("Script was not run with full path (failed to find $0 under $root_directory)") if (!$rok);
4156 # Set the umask based on config
4157 if ($gconfig{'umask'} && !$main::umask_already++) {
4158 umask(oct($gconfig{'umask'}));
4161 # If this is a cron job or other background task, set the nice level
4162 if (!$main::nice_already && $main::webmin_script_type eq 'cron') {
4164 if ($gconfig{'nice'}) {
4165 eval 'POSIX::nice($gconfig{\'nice\'});';
4168 # Set IO scheduling class and priority
4169 if ($gconfig{'sclass'} ne '' || $gconfig{'sprio'} ne '') {
4171 $cmd .= " -c ".quotemeta($gconfig{'sclass'})
4172 if ($gconfig{'sclass'} ne '');
4173 $cmd .= " -n ".quotemeta($gconfig{'sprio'})
4174 if ($gconfig{'sprio'} ne '');
4176 &execute_command("$cmd >/dev/null 2>&1");
4179 $main::nice_already++;
4182 my $u = $ENV{'BASE_REMOTE_USER'} || $ENV{'REMOTE_USER'};
4183 $base_remote_user = $u;
4184 $remote_user = $ENV{'REMOTE_USER'};
4186 # Work out if user is definitely in the DB, and if so get his attrs
4187 $remote_user_proto = $ENV{"REMOTE_USER_PROTO"};
4188 %remote_user_attrs = ( );
4189 if ($remote_user_proto) {
4190 my $userdb = &get_userdb_string();
4191 my ($dbh, $proto, $prefix, $args) =
4192 $userdb ? &connect_userdb($userdb) : ( );
4194 if ($proto eq "mysql" || $proto eq "postgresql") {
4195 # Read attrs from SQL
4196 my $cmd = $dbh->prepare("select webmin_user_attr.attr,webmin_user_attr.value from webmin_user_attr,webmin_user where webmin_user_attr.id = webmin_user.id and webmin_user.name = ?");
4197 if ($cmd && $cmd->execute($base_remote_user)) {
4198 while(my ($attr, $value) = $cmd->fetchrow()) {
4199 $remote_user_attrs{$attr} = $value;
4204 elsif ($proto eq "ldap") {
4205 # Read attrs from LDAP
4206 my $rv = $dbh->search(
4208 filter => '(&(cn='.$base_remote_user.')'.
4210 $args->{'userclass'}.'))',
4212 my ($u) = $rv && !$rv->code ? $rv->all_entries : ( );
4214 foreach $la ($u->get_value('webminAttr')) {
4215 my ($attr, $value) = split(/=/, $la, 2);
4216 $remote_user_attrs{$attr} = $value;
4220 &disconnect_userdb($userdb, $dbh);
4225 # Find and load the configuration file for this module
4226 my (@ruinfo, $rgroup);
4227 $module_config_directory = "$config_directory/$module_name";
4228 if (&get_product_name() eq "usermin" &&
4229 -r "$module_config_directory/config.$remote_user") {
4231 $module_config_file = "$module_config_directory/config.$remote_user";
4233 elsif (&get_product_name() eq "usermin" &&
4234 (@ruinfo = getpwnam($remote_user)) &&
4235 ($rgroup = getgrgid($ruinfo[3])) &&
4236 -r "$module_config_directory/config.\@$rgroup") {
4237 # Based on group name
4238 $module_config_file = "$module_config_directory/config.\@$rgroup";
4242 $module_config_file = "$module_config_directory/config";
4245 &read_file_cached($module_config_file, \%config);
4247 # Fix up windows-specific substitutions in values
4248 foreach my $k (keys %config) {
4249 if ($config{$k} =~ /\$\{systemroot\}/) {
4250 my $root = &get_windows_root();
4251 $config{$k} =~ s/\$\{systemroot\}/$root/g;
4256 # Record the initial module
4257 $main::initial_module_name ||= $module_name;
4259 # Set some useful variables
4261 $current_themes = $ENV{'MOBILE_DEVICE'} && defined($gconfig{'mobile_theme'}) ?
4262 $gconfig{'mobile_theme'} :
4263 defined($remote_user_attrs{'theme'}) ?
4264 $remote_user_attrs{'theme'} :
4265 defined($gconfig{'theme_'.$remote_user}) ?
4266 $gconfig{'theme_'.$remote_user} :
4267 defined($gconfig{'theme_'.$base_remote_user}) ?
4268 $gconfig{'theme_'.$base_remote_user} :
4270 @current_themes = split(/\s+/, $current_themes);
4271 $current_theme = $current_themes[0];
4272 @theme_root_directories = map { "$root_directory/$_" } @current_themes;
4273 $theme_root_directory = $theme_root_directories[0];
4274 @theme_configs = ( );
4275 foreach my $troot (@theme_root_directories) {
4277 &read_file_cached("$troot/config", \%onetconfig);
4278 &read_file_cached("$troot/config", \%tconfig);
4279 push(@theme_configs, \%onetconfig);
4281 $tb = defined($tconfig{'cs_header'}) ? "bgcolor=#$tconfig{'cs_header'}" :
4282 defined($gconfig{'cs_header'}) ? "bgcolor=#$gconfig{'cs_header'}" :
4284 $cb = defined($tconfig{'cs_table'}) ? "bgcolor=#$tconfig{'cs_table'}" :
4285 defined($gconfig{'cs_table'}) ? "bgcolor=#$gconfig{'cs_table'}" :
4287 $tb .= ' '.$tconfig{'tb'} if ($tconfig{'tb'});
4288 $cb .= ' '.$tconfig{'cb'} if ($tconfig{'cb'});
4289 if ($tconfig{'preload_functions'}) {
4290 # Force load of theme functions right now, if requested
4291 &load_theme_library();
4293 if ($tconfig{'oofunctions'} && !$main::loaded_theme_oo_library++) {
4294 # Load the theme's Webmin:: package classes
4295 do "$theme_root_directory/$tconfig{'oofunctions'}";
4300 $webmin_logfile = $gconfig{'webmin_log'} ? $gconfig{'webmin_log'}
4301 : "$var_directory/webmin.log";
4303 # Load language strings into %text
4304 my @langs = &list_languages();
4306 if ($gconfig{'acceptlang'}) {
4307 foreach my $a (split(/,/, $ENV{'HTTP_ACCEPT_LANGUAGE'})) {
4308 my ($al) = grep { $_->{'lang'} eq $a } @langs;
4310 $accepted_lang = $al->{'lang'};
4315 $current_lang = $force_lang ? $force_lang :
4316 $accepted_lang ? $accepted_lang :
4317 $remote_user_attrs{'lang'} ? $remote_user_attrs{'lang'} :
4318 $gconfig{"lang_$remote_user"} ? $gconfig{"lang_$remote_user"} :
4319 $gconfig{"lang_$base_remote_user"} ? $gconfig{"lang_$base_remote_user"} :
4320 $gconfig{"lang"} ? $gconfig{"lang"} : $default_lang;
4321 foreach my $l (@langs) {
4322 $current_lang_info = $l if ($l->{'lang'} eq $current_lang);
4324 @lang_order_list = &unique($default_lang,
4325 split(/:/, $current_lang_info->{'fallback'}),
4327 %text = &load_language($module_name);
4328 %text || &error("Failed to determine Webmin root from SERVER_ROOT, SCRIPT_FILENAME or the full command line");
4330 # Get the %module_info for this module
4332 my ($mi) = grep { $_->{'dir'} eq $module_name }
4333 &get_all_module_infos(2);
4334 %module_info = %$mi;
4335 $module_root_directory = &module_root_directory($module_name);
4338 if ($module_name && !$main::no_acl_check &&
4339 !defined($ENV{'FOREIGN_MODULE_NAME'})) {
4340 # Check if the HTTP user can access this module
4341 if (!&foreign_available($module_name)) {
4342 if (!&foreign_check($module_name)) {
4343 &error(&text('emodulecheck',
4344 "<i>$module_info{'desc'}</i>"));
4347 &error(&text('emodule', "<i>$u</i>",
4348 "<i>$module_info{'desc'}</i>"));
4351 $main::no_acl_check++;
4354 # Check the Referer: header for nasty redirects
4355 my @referers = split(/\s+/, $gconfig{'referers'});
4357 my $r = $ENV{'HTTP_REFERER'};
4358 if ($r =~ /^(http|https|ftp):\/\/([^:\/]+:[^@\/]+@)?\[([^\]]+)\]/ ||
4359 $r =~ /^(http|https|ftp):\/\/([^:\/]+:[^@\/]+@)?([^\/:@]+)/) {
4362 my $http_host = $ENV{'HTTP_HOST'};
4363 $http_host =~ s/:\d+$//;
4364 $http_host =~ s/^\[(\S+)\]$/$1/;
4365 my $unsafe_index = $unsafe_index_cgi ||
4366 &get_module_variable('$unsafe_index_cgi');
4368 ($ENV{'SCRIPT_NAME'} !~ /^\/(index.cgi)?$/ || $unsafe_index) &&
4369 ($ENV{'SCRIPT_NAME'} !~ /^\/([a-z0-9\_\-]+)\/(index.cgi)?$/i ||
4371 $0 !~ /(session_login|pam_login)\.cgi$/ && !$gconfig{'referer'} &&
4372 $ENV{'MINISERV_CONFIG'} && !$main::no_referers_check &&
4373 $ENV{'HTTP_USER_AGENT'} !~ /^Webmin/i &&
4374 ($referer_site && $referer_site ne $http_host &&
4375 &indexof($referer_site, @referers) < 0 ||
4376 !$referer_site && $gconfig{'referers_none'}) &&
4377 !$trust_unknown_referers &&
4378 !&get_module_variable('$trust_unknown_referers')) {
4379 # Looks like a link from elsewhere .. show an error
4380 &header($text{'referer_title'}, "", undef, 0, 1, 1);
4382 $prot = lc($ENV{'HTTPS'}) eq 'on' ? "https" : "http";
4383 my $url = "<tt>".&html_escape("$prot://$ENV{'HTTP_HOST'}$ENV{'REQUEST_URI'}")."</tt>";
4384 if ($referer_site) {
4386 print &text('referer_warn',
4387 "<tt>".&html_escape($r)."</tt>", $url);
4389 print &text('referer_fix1', &html_escape($http_host)),"<p>\n";
4390 print &text('referer_fix2', &html_escape($http_host)),"<p>\n";
4393 # No referer info given
4394 print &text('referer_warn_unknown', $url),"<p>\n";
4395 print &text('referer_fix1u'),"<p>\n";
4396 print &text('referer_fix2u'),"<p>\n";
4400 &footer("/", $text{'index'});
4403 $main::no_referers_check++;
4404 $main::completed_referers_check++;
4406 # Call theme post-init
4407 if (defined(&theme_post_init_config)) {
4408 &theme_post_init_config(@_);
4411 # Record that we have done the calling library in this package
4412 my ($callpkg, $lib) = caller();
4414 $main::done_foreign_require{$callpkg,$lib} = 1;
4416 # If a licence checking is enabled, do it now
4417 if ($gconfig{'licence_module'} && !$main::done_licence_module_check &&
4418 &foreign_check($gconfig{'licence_module'}) &&
4419 -r "$root_directory/$gconfig{'licence_module'}/licence_check.pl") {
4420 my $oldpwd = &get_current_dir();
4421 $main::done_licence_module_check++;
4422 $main::licence_module = $gconfig{'licence_module'};
4423 &foreign_require($main::licence_module, "licence_check.pl");
4424 ($main::licence_status, $main::licence_message) =
4425 &foreign_call($main::licence_module, "check_licence");
4429 # Export global variables to caller
4430 if ($main::export_to_caller) {
4431 foreach my $v ('$config_file', '%gconfig', '$null_file',
4432 '$path_separator', '@root_directories',
4433 '$root_directory', '$module_name',
4434 '$base_remote_user', '$remote_user',
4435 '$remote_user_proto', '%remote_user_attrs',
4436 '$module_config_directory', '$module_config_file',
4437 '%config', '@current_themes', '$current_theme',
4438 '@theme_root_directories', '$theme_root_directory',
4439 '%tconfig','@theme_configs', '$tb', '$cb', '$scriptname',
4440 '$webmin_logfile', '$current_lang',
4441 '$current_lang_info', '@lang_order_list', '%text',
4442 '%module_info', '$module_root_directory') {
4443 my ($vt, $vn) = split('', $v, 2);
4444 eval "${vt}${callpkg}::${vn} = ${vt}${vn}";
4451 =head2 load_language([module], [directory])
4453 Returns a hashtable mapping text codes to strings in the appropriate language,
4454 based on the $current_lang global variable, which is in turn set based on
4455 the Webmin user's selection. The optional module parameter tells the function
4456 which module to load strings for, and defaults to the calling module. The
4457 optional directory parameter can be used to load strings from a directory
4460 In regular module development you will never need to call this function
4461 directly, as init_config calls it for you, and places the module's strings
4462 into the %text hash.
4468 my $root = $root_directory;
4469 my $ol = $gconfig{'overlang'};
4470 my ($dir) = ($_[1] || "lang");
4472 # Read global lang files
4473 foreach my $o (@lang_order_list) {
4474 my $ok = &read_file_cached_with_stat("$root/$dir/$o", \%text);
4475 return () if (!$ok && $o eq $default_lang);
4478 foreach my $o (@lang_order_list) {
4479 &read_file_cached("$root/$ol/$o", \%text);
4482 &read_file_cached("$config_directory/custom-lang", \%text);
4483 foreach my $o (@lang_order_list) {
4484 next if ($o eq "en");
4485 &read_file_cached("$config_directory/custom-lang.$o", \%text);
4487 my $norefs = $text{'__norefs'};
4490 # Read module's lang files
4491 delete($text{'__norefs'});
4492 my $mdir = &module_root_directory($_[0]);
4493 foreach my $o (@lang_order_list) {
4494 &read_file_cached_with_stat("$mdir/$dir/$o", \%text);
4497 foreach my $o (@lang_order_list) {
4498 &read_file_cached("$mdir/$ol/$o", \%text);
4501 &read_file_cached("$config_directory/$_[0]/custom-lang", \%text);
4502 foreach my $o (@lang_order_list) {
4503 next if ($o eq "en");
4504 &read_file_cached("$config_directory/$_[0]/custom-lang.$o",
4507 $norefs = $text{'__norefs'} if ($norefs);
4510 # Replace references to other strings
4512 foreach $k (keys %text) {
4513 $text{$k} =~ s/\$(\{([^\}]+)\}|([A-Za-z0-9\.\-\_]+))/text_subs($2 || $3,\%text)/ge;
4517 if (defined(&theme_load_language)) {
4518 &theme_load_language(\%text, $_[0]);
4523 =head2 text_subs(string)
4525 Used internally by load_language to expand $code substitutions in language
4531 if (substr($_[0], 0, 8) eq "include:") {
4534 open(INCLUDE, substr($_[0], 8));
4542 my $t = $_[1]->{$_[0]};
4543 return defined($t) ? $t : '$'.$_[0];
4547 =head2 text(message, [substitute]+)
4549 Returns a translated message from %text, but with $1, $2, etc.. replaced with
4550 the substitute parameters. This makes it easy to use strings with placeholders
4551 that get replaced with programmatically generated text. For example :
4553 print &text('index_hello', $remote_user),"<p>\n";
4558 my $t = &get_module_variable('%text', 1);
4559 my $rv = exists($t->{$_[0]}) ? $t->{$_[0]} : $text{$_[0]};
4560 for(my $i=1; $i<@_; $i++) {
4561 $rv =~ s/\$$i/$_[$i]/g;
4566 =head2 encode_base64(string)
4568 Encodes a string into base64 format, for use in MIME email or HTTP
4569 authorization headers.
4575 pos($_[0]) = 0; # ensure start at the beginning
4576 while ($_[0] =~ /(.{1,57})/gs) {
4577 $res .= substr(pack('u57', $1), 1)."\n";
4580 $res =~ tr|\` -_|AA-Za-z0-9+/|;
4581 my $padding = (3 - length($_[0]) % 3) % 3;
4582 $res =~ s/.{$padding}$/'=' x $padding/e if ($padding);
4586 =head2 decode_base64(string)
4588 Converts a base64-encoded string into plain text. The opposite of encode_base64.
4595 $str =~ tr|A-Za-z0-9+=/||cd; # remove non-base64 chars
4596 if (length($str) % 4) {
4599 $str =~ s/=+$//; # remove padding
4600 $str =~ tr|A-Za-z0-9+/| -_|; # convert to uuencoded format
4601 while ($str =~ /(.{1,60})/gs) {
4602 my $len = chr(32 + length($1)*3/4); # compute length byte
4603 $res .= unpack("u", $len . $1 ); # uudecode
4608 =head2 get_module_info(module, [noclone], [forcache])
4610 Returns a hash containg details of the given module. Some useful keys are :
4612 =item dir - The module directory, like sendmail.
4614 =item desc - Human-readable description, in the current users' language.
4616 =item version - Optional module version number.
4618 =item os_support - List of supported operating systems and versions.
4620 =item category - Category on Webmin's left menu, like net.
4625 return () if ($_[0] =~ /^\./);
4626 my (%rv, $clone, $o);
4627 my $mdir = &module_root_directory($_[0]);
4628 &read_file_cached("$mdir/module.info", \%rv) || return ();
4630 # A clone is a module that links to another directory under the root
4631 foreach my $r (@root_directories) {
4632 if (&is_under_directory($r, $mdir)) {
4638 foreach $o (@lang_order_list) {
4639 $rv{"desc"} = $rv{"desc_$o"} if ($rv{"desc_$o"});
4640 $rv{"longdesc"} = $rv{"longdesc_$o"} if ($rv{"longdesc_$o"});
4642 if ($clone && !$_[1] && $config_directory) {
4643 $rv{'clone'} = $rv{'desc'};
4644 &read_file("$config_directory/$_[0]/clone", \%rv);
4647 my %module_categories;
4648 &read_file_cached("$config_directory/webmin.cats", \%module_categories);
4649 my $pn = &get_product_name();
4650 if (defined($rv{'category_'.$pn})) {
4651 # Can override category for webmin/usermin
4652 $rv{'category'} = $rv{'category_'.$pn};
4654 $rv{'realcategory'} = $rv{'category'};
4655 $rv{'category'} = $module_categories{$_[0]}
4656 if (defined($module_categories{$_[0]}));
4658 # Apply description overrides
4659 $rv{'realdesc'} = $rv{'desc'};
4661 &read_file_cached("$config_directory/webmin.descs", \%descs);
4662 if ($descs{$_[0]}) {
4663 $rv{'desc'} = $descs{$_[0]};
4665 foreach my $o (@lang_order_list) {
4666 my $ov = $descs{$_[0]." ".$o} || $descs{$_[0]."_".$o};
4667 $rv{'desc'} = $ov if ($ov);
4671 # Apply per-user description overridde
4672 my %gaccess = &get_module_acl(undef, "");
4673 if ($gaccess{'desc_'.$_[0]}) {
4674 $rv{'desc'} = $gaccess{'desc_'.$_[0]};
4678 if ($rv{'longdesc'}) {
4679 # All standard modules have an index.cgi
4680 $rv{'index_link'} = 'index.cgi';
4683 # Call theme-specific override function
4684 if (defined(&theme_get_module_info)) {
4685 %rv = &theme_get_module_info(\%rv, $_[0], $_[1], $_[2]);
4691 =head2 get_all_module_infos(cachemode)
4693 Returns a list contains the information on all modules in this webmin
4694 install, including clones. Uses caching to reduce the number of module.info
4695 files that need to be read. Each element of the array is a hash reference
4696 in the same format as returned by get_module_info. The cache mode flag can be :
4697 0 = read and write, 1 = don't read or write, 2 = read only
4700 sub get_all_module_infos
4704 # Is the cache out of date? (ie. have any of the root's changed?)
4705 my $cache_file = "$config_directory/module.infos.cache";
4707 if (&read_file_cached($cache_file, \%cache)) {
4708 foreach my $r (@root_directories) {
4710 if ($st[9] != $cache{'mtime_'.$r}) {
4720 if ($_[0] != 1 && !$changed && $cache{'lang'} eq $current_lang) {
4721 # Can use existing module.info cache
4723 foreach my $k (keys %cache) {
4724 if ($k =~ /^(\S+) (\S+)$/) {
4725 $mods{$1}->{$2} = $cache{$k};
4728 @rv = map { $mods{$_} } (keys %mods) if (%mods);
4731 # Need to rebuild cache
4733 foreach my $r (@root_directories) {
4735 foreach my $m (readdir(DIR)) {
4736 next if ($m =~ /^(config-|\.)/ || $m =~ /\.(cgi|pl)$/);
4737 my %minfo = &get_module_info($m, 0, 1);
4738 next if (!%minfo || !$minfo{'dir'});
4740 foreach $k (keys %minfo) {
4741 $cache{"${m} ${k}"} = $minfo{$k};
4746 $cache{'mtime_'.$r} = $st[9];
4748 $cache{'lang'} = $current_lang;
4749 if (!$_[0] && $< == 0 && $> == 0) {
4751 # Don't fail if cache write fails
4752 local $main::error_must_die = 1;
4753 &write_file($cache_file, \%cache);
4758 # Override descriptions for modules for current user
4759 my %gaccess = &get_module_acl(undef, "");
4760 foreach my $m (@rv) {
4761 if ($gaccess{"desc_".$m->{'dir'}}) {
4762 $m->{'desc'} = $gaccess{"desc_".$m->{'dir'}};
4766 # Apply installed flags
4768 &read_file_cached("$config_directory/installed.cache", \%installed);
4769 foreach my $m (@rv) {
4770 $m->{'installed'} = $installed{$m->{'dir'}};
4776 =head2 get_theme_info(theme)
4778 Returns a hash containing a theme's details, taken from it's theme.info file.
4779 Some useful keys are :
4781 =item dir - The theme directory, like blue-theme.
4783 =item desc - Human-readable description, in the current users' language.
4785 =item version - Optional module version number.
4787 =item os_support - List of supported operating systems and versions.
4792 return () if ($_[0] =~ /^\./);
4794 my $tdir = &module_root_directory($_[0]);
4795 &read_file("$tdir/theme.info", \%rv) || return ();
4796 foreach my $o (@lang_order_list) {
4797 $rv{"desc"} = $rv{"desc_$o"} if ($rv{"desc_$o"});
4803 =head2 list_languages
4805 Returns an array of supported languages, taken from Webmin's os_list.txt file.
4806 Each is a hash reference with the following keys :
4808 =item lang - The short language code, like es for Spanish.
4810 =item desc - A human-readable description, in English.
4812 =item charset - An optional character set to use when displaying the language.
4814 =item titles - Set to 1 only if Webmin has title images for the language.
4816 =item fallback - The code for another language to use if a string does not exist in this one. For all languages, English is the ultimate fallback.
4821 if (!@main::list_languages_cache) {
4824 open(LANG, "$root_directory/lang_list.txt");
4826 if (/^(\S+)\s+(.*)/) {
4827 my $l = { 'desc' => $2 };
4828 foreach $o (split(/,/, $1)) {
4829 if ($o =~ /^([^=]+)=(.*)$/) {
4833 $l->{'index'} = scalar(@rv);
4834 push(@main::list_languages_cache, $l);
4838 @main::list_languages_cache = sort { $a->{'desc'} cmp $b->{'desc'} }
4839 @main::list_languages_cache;
4841 return @main::list_languages_cache;
4844 =head2 read_env_file(file, &hash, [include-commented])
4846 Similar to Webmin's read_file function, but handles files containing shell
4847 environment variables formatted like :
4852 The file parameter is the full path to the file to read, and hash a Perl hash
4853 ref to read names and values into.
4859 &open_readfile(FILE, $_[0]) || return 0;
4862 # Remove start of line comments
4866 if (/^\s*(export\s*)?([A-Za-z0-9_\.]+)\s*=\s*"(.*)"/i ||
4867 /^\s*(export\s*)?([A-Za-z0-9_\.]+)\s*=\s*'(.*)'/i ||
4868 /^\s*(export\s*)?([A-Za-z0-9_\.]+)\s*=\s*(.*)/i) {
4876 =head2 write_env_file(file, &hash, [export])
4878 Writes out a hash to a file in name='value' format, suitable for use in a shell
4879 script. The parameters are :
4881 =item file - Full path for a file to write to
4883 =item hash - Hash reference of names and values to write.
4885 =item export - If set to 1, preceed each variable setting with the word 'export'.
4890 my $exp = $_[2] ? "export " : "";
4891 &open_tempfile(FILE, ">$_[0]");
4892 foreach my $k (keys %{$_[1]}) {
4893 my $v = $_[1]->{$k};
4894 if ($v =~ /^\S+$/) {
4895 &print_tempfile(FILE, "$exp$k=$v\n");
4898 &print_tempfile(FILE, "$exp$k=\"$v\"\n");
4901 &close_tempfile(FILE);
4904 =head2 lock_file(filename, [readonly], [forcefile])
4906 Lock a file for exclusive access. If the file is already locked, spin
4907 until it is freed. Uses a .lock file, which is not 100% reliable, but seems
4908 to work OK. The parameters are :
4910 =item filename - File or directory to lock.
4912 =item readonly - If set, the lock is for reading the file only. More than one script can have a readonly lock, but only one can hold a write lock.
4914 =item forcefile - Force the file to be considered as a real file and not a symlink for Webmin actions logging purposes.
4919 my $realfile = &translate_filename($_[0]);
4920 return 0 if (!$_[0] || defined($main::locked_file_list{$realfile}));
4921 my $no_lock = !&can_lock_file($realfile);
4922 my $lock_tries_count = 0;
4925 if (!$no_lock && open(LOCKING, "$realfile.lock")) {
4930 if ($no_lock || !$pid || !kill(0, $pid) || $pid == $$) {
4933 # Create the .lock file
4934 open(LOCKING, ">$realfile.lock") || return 0;
4935 my $lck = eval "flock(LOCKING, 2+4)";
4937 # Lock of lock file failed! Wait till later
4940 print LOCKING $$,"\n";
4941 eval "flock(LOCKING, 8)";
4944 $main::locked_file_list{$realfile} = int($_[1]);
4945 push(@main::temporary_files, "$realfile.lock");
4946 if (($gconfig{'logfiles'} || $gconfig{'logfullfiles'}) &&
4947 !&get_module_variable('$no_log_file_changes') &&
4949 # Grab a copy of this file for later diffing
4951 $main::locked_file_data{$realfile} = undef;
4953 $main::locked_file_type{$realfile} = 1;
4954 $main::locked_file_data{$realfile} = '';
4956 elsif (!$_[2] && ($lnk = readlink($realfile))) {
4957 $main::locked_file_type{$realfile} = 2;
4958 $main::locked_file_data{$realfile} = $lnk;
4960 elsif (open(ORIGFILE, $realfile)) {
4961 $main::locked_file_type{$realfile} = 0;
4962 $main::locked_file_data{$realfile} = '';
4965 $main::locked_file_data{$realfile} .=$_;
4974 if ($lock_tries_count++ > 5*60) {
4975 # Give up after 5 minutes
4976 &error(&text('elock_tries', "<tt>$realfile</tt>", 5));
4982 =head2 unlock_file(filename)
4984 Release a lock on a file taken out by lock_file. If Webmin actions logging of
4985 file changes is enabled, then at unlock file a diff will be taken between the
4986 old and new contents, and stored under /var/webmin/diffs when webmin_log is
4987 called. This can then be viewed in the Webmin Actions Log module.
4992 my $realfile = &translate_filename($_[0]);
4993 return if (!$_[0] || !defined($main::locked_file_list{$realfile}));
4994 unlink("$realfile.lock") if (&can_lock_file($realfile));
4995 delete($main::locked_file_list{$realfile});
4996 if (exists($main::locked_file_data{$realfile})) {
4997 # Diff the new file with the old
4999 my $lnk = readlink($realfile);
5000 my $type = -d _ ? 1 : $lnk ? 2 : 0;
5001 my $oldtype = $main::locked_file_type{$realfile};
5002 my $new = !defined($main::locked_file_data{$realfile});
5003 if ($new && !-e _) {
5004 # file doesn't exist, and never did! do nothing ..
5006 elsif ($new && $type == 1 || !$new && $oldtype == 1) {
5007 # is (or was) a directory ..
5008 if (-d _ && !defined($main::locked_file_data{$realfile})) {
5009 push(@main::locked_file_diff,
5010 { 'type' => 'mkdir', 'object' => $realfile });
5012 elsif (!-d _ && defined($main::locked_file_data{$realfile})) {
5013 push(@main::locked_file_diff,
5014 { 'type' => 'rmdir', 'object' => $realfile });
5017 elsif ($new && $type == 2 || !$new && $oldtype == 2) {
5018 # is (or was) a symlink ..
5019 if ($lnk && !defined($main::locked_file_data{$realfile})) {
5020 push(@main::locked_file_diff,
5021 { 'type' => 'symlink', 'object' => $realfile,
5024 elsif (!$lnk && defined($main::locked_file_data{$realfile})) {
5025 push(@main::locked_file_diff,
5026 { 'type' => 'unsymlink', 'object' => $realfile,
5027 'data' => $main::locked_file_data{$realfile} });
5029 elsif ($lnk ne $main::locked_file_data{$realfile}) {
5030 push(@main::locked_file_diff,
5031 { 'type' => 'resymlink', 'object' => $realfile,
5036 # is a file, or has changed type?!
5037 my ($diff, $delete_file);
5038 my $type = "modify";
5040 open(NEWFILE, ">$realfile");
5045 if (!defined($main::locked_file_data{$realfile})) {
5048 open(ORIGFILE, ">$realfile.webminorig");
5049 print ORIGFILE $main::locked_file_data{$realfile};
5051 $diff = &backquote_command(
5052 "diff ".quotemeta("$realfile.webminorig")." ".
5053 quotemeta($realfile)." 2>/dev/null");
5054 push(@main::locked_file_diff,
5055 { 'type' => $type, 'object' => $realfile,
5056 'data' => $diff } ) if ($diff);
5057 unlink("$realfile.webminorig");
5058 unlink($realfile) if ($delete_file);
5061 if ($gconfig{'logfullfiles'}) {
5062 # Add file details to list of those to fully log
5063 $main::orig_file_data{$realfile} ||=
5064 $main::locked_file_data{$realfile};
5065 $main::orig_file_type{$realfile} ||=
5066 $main::locked_file_type{$realfile};
5069 delete($main::locked_file_data{$realfile});
5070 delete($main::locked_file_type{$realfile});
5074 =head2 test_lock(file)
5076 Returns 1 if some file is currently locked, 0 if not.
5081 my $realfile = &translate_filename($_[0]);
5082 return 0 if (!$_[0]);
5083 return 1 if (defined($main::locked_file_list{$realfile}));
5084 return 0 if (!&can_lock_file($realfile));
5086 if (open(LOCKING, "$realfile.lock")) {
5091 return $pid && kill(0, $pid);
5094 =head2 unlock_all_files
5096 Unlocks all files locked by the current script.
5099 sub unlock_all_files
5101 foreach $f (keys %main::locked_file_list) {
5106 =head2 can_lock_file(file)
5108 Returns 1 if some file should be locked, based on the settings in the
5109 Webmin Configuration module. For internal use by lock_file only.
5114 if (&is_readonly_mode()) {
5115 return 0; # never lock in read-only mode
5117 elsif ($gconfig{'lockmode'} == 0) {
5120 elsif ($gconfig{'lockmode'} == 1) {
5124 # Check if under any of the directories
5126 foreach my $d (split(/\t+/, $gconfig{'lockdirs'})) {
5127 if (&same_file($d, $_[0]) ||
5128 &is_under_directory($d, $_[0])) {
5132 return $gconfig{'lockmode'} == 2 ? $match : !$match;
5136 =head2 webmin_log(action, type, object, ¶ms, [module], [host, script-on-host, client-ip])
5138 Log some action taken by a user. This is typically called at the end of a
5139 script, once all file changes are complete and all commands run. The
5142 =item action - A short code for the action being performed, like 'create'.
5144 =item type - A code for the type of object the action is performed to, like 'user'.
5146 =item object - A short name for the object, like 'joe' if the Unix user 'joe' was just created.
5148 =item params - A hash ref of additional information about the action.
5150 =item module - Name of the module in which the action was performed, which defaults to the current module.
5152 =item host - Remote host on which the action was performed. You should never need to set this (or the following two parameters), as they are used only for remote Webmin logging.
5154 =item script-on-host - Script name like create_user.cgi on the host the action was performed on.
5156 =item client-ip - IP address of the browser that performed the action.
5161 return if (!$gconfig{'log'} || &is_readonly_mode());
5162 my $m = $_[4] ? $_[4] : &get_module_name();
5164 if ($gconfig{'logclear'}) {
5165 # check if it is time to clear the log
5166 my @st = stat("$webmin_logfile.time");
5167 my $write_logtime = 0;
5169 if ($st[9]+$gconfig{'logtime'}*60*60 < time()) {
5170 # clear logfile and all diff files
5171 &unlink_file("$ENV{'WEBMIN_VAR'}/diffs");
5172 &unlink_file("$ENV{'WEBMIN_VAR'}/files");
5173 &unlink_file("$ENV{'WEBMIN_VAR'}/annotations");
5174 unlink($webmin_logfile);
5181 if ($write_logtime) {
5182 open(LOGTIME, ">$webmin_logfile.time");
5183 print LOGTIME time(),"\n";
5188 # If an action script directory is defined, call the appropriate scripts
5189 if ($gconfig{'action_script_dir'}) {
5190 my ($action, $type, $object) = ($_[0], $_[1], $_[2]);
5191 my ($basedir) = $gconfig{'action_script_dir'};
5193 for my $dir ($basedir/$type/$action, $basedir/$type, $basedir) {
5196 opendir(DIR, $dir) or die "Can't open $dir: $!";
5197 while (defined($file = readdir(DIR))) {
5198 next if ($file =~ /^\.\.?$/); # skip '.' and '..'
5199 if (-x "$dir/$file") {
5200 # Call a script notifying it of the action
5202 $ENV{'ACTION_MODULE'} = &get_module_name();
5203 $ENV{'ACTION_ACTION'} = $_[0];
5204 $ENV{'ACTION_TYPE'} = $_[1];
5205 $ENV{'ACTION_OBJECT'} = $_[2];
5206 $ENV{'ACTION_SCRIPT'} = $script_name;
5207 foreach my $p (keys %param) {
5208 $ENV{'ACTION_PARAM_'.uc($p)} = $param{$p};
5210 system("$dir/$file", @_,
5211 "<$null_file", ">$null_file", "2>&1");
5219 # should logging be done at all?
5220 return if ($gconfig{'logusers'} && &indexof($base_remote_user,
5221 split(/\s+/, $gconfig{'logusers'})) < 0);
5222 return if ($gconfig{'logmodules'} && &indexof($m,
5223 split(/\s+/, $gconfig{'logmodules'})) < 0);
5227 my @tm = localtime($now);
5228 my $script_name = $0 =~ /([^\/]+)$/ ? $1 : '-';
5229 my $id = sprintf "%d.%d.%d", $now, $$, $main::action_id_count;
5230 my $idprefix = substr($now, 0, 5);
5231 $main::action_id_count++;
5232 my $line = sprintf "%s [%2.2d/%s/%4.4d %2.2d:%2.2d:%2.2d] %s %s %s %s %s \"%s\" \"%s\" \"%s\"",
5233 $id, $tm[3], ucfirst($number_to_month_map{$tm[4]}), $tm[5]+1900,
5234 $tm[2], $tm[1], $tm[0],
5235 $remote_user || '-',
5236 $main::session_id || '-',
5237 $_[7] || $ENV{'REMOTE_HOST'} || '-',
5238 $m, $_[5] ? "$_[5]:$_[6]" : $script_name,
5239 $_[0], $_[1] ne '' ? $_[1] : '-', $_[2] ne '' ? $_[2] : '-';
5241 foreach my $k (sort { $a cmp $b } keys %{$_[3]}) {
5242 my $v = $_[3]->{$k};
5248 elsif (ref($v) eq 'ARRAY') {
5252 $vv =~ s/(['"\\\r\n\t\%])/sprintf("%%%2.2X",ord($1))/ge;
5253 $line .= " $k='$vv'";
5257 foreach $vv (split(/\0/, $v)) {
5259 $vv =~ s/(['"\\\r\n\t\%])/sprintf("%%%2.2X",ord($1))/ge;
5260 $line .= " $k='$vv'";
5263 $param{$k} = join(" ", @pv);
5265 open(WEBMINLOG, ">>$webmin_logfile");
5266 print WEBMINLOG $line,"\n";
5268 if ($gconfig{'logperms'}) {
5269 chmod(oct($gconfig{'logperms'}), $webmin_logfile);
5272 chmod(0600, $webmin_logfile);
5275 if ($gconfig{'logfiles'} && !&get_module_variable('$no_log_file_changes')) {
5276 # Find and record the changes made to any locked files, or commands run
5278 mkdir("$ENV{'WEBMIN_VAR'}/diffs", 0700);
5279 foreach my $d (@main::locked_file_diff) {
5280 mkdir("$ENV{'WEBMIN_VAR'}/diffs/$idprefix", 0700);
5281 mkdir("$ENV{'WEBMIN_VAR'}/diffs/$idprefix/$id", 0700);
5282 open(DIFFLOG, ">$ENV{'WEBMIN_VAR'}/diffs/$idprefix/$id/$i");
5283 print DIFFLOG "$d->{'type'} $d->{'object'}\n";
5284 print DIFFLOG $d->{'data'};
5286 if ($d->{'input'}) {
5288 ">$ENV{'WEBMIN_VAR'}/diffs/$idprefix/$id/$i.input");
5289 print DIFFLOG $d->{'input'};
5292 if ($gconfig{'logperms'}) {
5293 chmod(oct($gconfig{'logperms'}),
5294 "$ENV{'WEBMIN_VAR'}/diffs/$idprefix/$id/$i",
5295 "$ENV{'WEBMIN_VAR'}/diffs/$idprefix/$id/$i.input");
5299 @main::locked_file_diff = undef;
5302 if ($gconfig{'logfullfiles'}) {
5303 # Save the original contents of any modified files
5305 mkdir("$ENV{'WEBMIN_VAR'}/files", 0700);
5306 foreach my $f (keys %main::orig_file_data) {
5307 mkdir("$ENV{'WEBMIN_VAR'}/files/$idprefix", 0700);
5308 mkdir("$ENV{'WEBMIN_VAR'}/files/$idprefix/$id", 0700);
5309 open(ORIGLOG, ">$ENV{'WEBMIN_VAR'}/files/$idprefix/$id/$i");
5310 if (!defined($main::orig_file_type{$f})) {
5311 print ORIGLOG -1," ",$f,"\n";
5314 print ORIGLOG $main::orig_file_type{$f}," ",$f,"\n";
5316 print ORIGLOG $main::orig_file_data{$f};
5318 if ($gconfig{'logperms'}) {
5319 chmod(oct($gconfig{'logperms'}),
5320 "$ENV{'WEBMIN_VAR'}/files/$idprefix/$id.$i");
5324 %main::orig_file_data = undef;
5325 %main::orig_file_type = undef;
5328 if ($miniserv::page_capture_out) {
5329 # Save the whole page output
5330 mkdir("$ENV{'WEBMIN_VAR'}/output", 0700);
5331 mkdir("$ENV{'WEBMIN_VAR'}/output/$idprefix", 0700);
5332 open(PAGEOUT, ">$ENV{'WEBMIN_VAR'}/output/$idprefix/$id");
5333 print PAGEOUT $miniserv::page_capture_out;
5335 if ($gconfig{'logperms'}) {
5336 chmod(oct($gconfig{'logperms'}),
5337 "$ENV{'WEBMIN_VAR'}/output/$idprefix/$id");
5339 $miniserv::page_capture_out = undef;
5343 if ($gconfig{'logsyslog'}) {
5344 eval 'use Sys::Syslog qw(:DEFAULT setlogsock);
5345 openlog(&get_product_name(), "cons,pid,ndelay", "daemon");
5346 setlogsock("inet");';
5348 # Syslog module is installed .. try to convert to a
5349 # human-readable form
5351 my $mod = &get_module_name();
5352 my $mdir = module_root_directory($mod);
5353 if (-r "$mdir/log_parser.pl") {
5354 &foreign_require($mod, "log_parser.pl");
5356 foreach my $k (keys %{$_[3]}) {
5357 my $v = $_[3]->{$k};
5358 if (ref($v) eq 'ARRAY') {
5359 $params{$k} = join("\0", @$v);
5365 $msg = &foreign_call($mod, "parse_webmin_log",
5366 $remote_user, $script_name,
5367 $_[0], $_[1], $_[2], \%params);
5368 $msg =~ s/<[^>]*>//g; # Remove tags
5370 elsif ($_[0] eq "_config_") {
5371 my %wtext = &load_language("webminlog");
5372 $msg = $wtext{'search_config'};
5374 $msg ||= "$_[0] $_[1] $_[2]";
5375 my %info = &get_module_info($m);
5376 eval { syslog("info", "%s", "[$info{'desc'}] $msg"); };
5381 =head2 additional_log(type, object, data, [input])
5383 Records additional log data for an upcoming call to webmin_log, such
5384 as a command that was run or SQL that was executed. Typically you will never
5385 need to call this function directory.
5390 if ($gconfig{'logfiles'} && !&get_module_variable('$no_log_file_changes')) {
5391 push(@main::locked_file_diff,
5392 { 'type' => $_[0], 'object' => $_[1], 'data' => $_[2],
5393 'input' => $_[3] } );
5397 =head2 webmin_debug_log(type, message)
5399 Write something to the Webmin debug log. For internal use only.
5402 sub webmin_debug_log
5404 my ($type, $msg) = @_;
5405 return 0 if (!$main::opened_debug_log);
5406 return 0 if ($gconfig{'debug_no'.$main::webmin_script_type});
5407 if ($gconfig{'debug_modules'}) {
5408 my @dmods = split(/\s+/, $gconfig{'debug_modules'});
5409 return 0 if (&indexof($main::initial_module_name, @dmods) < 0);
5412 eval 'use Time::HiRes qw(gettimeofday); ($now, $ms) = gettimeofday';
5414 my @tm = localtime($now);
5416 "%s [%2.2d/%s/%4.4d %2.2d:%2.2d:%2.2d.%6.6d] %s %s %s %s \"%s\"",
5417 $$, $tm[3], ucfirst($number_to_month_map{$tm[4]}), $tm[5]+1900,
5418 $tm[2], $tm[1], $tm[0], $ms,
5419 $remote_user || "-",
5420 $ENV{'REMOTE_HOST'} || "-",
5421 &get_module_name() || "-",
5424 seek(main::DEBUGLOG, 0, 2);
5425 print main::DEBUGLOG $line."\n";
5429 =head2 system_logged(command)
5431 Just calls the Perl system() function, but also logs the command run.
5436 if (&is_readonly_mode()) {
5437 print STDERR "Vetoing command $_[0]\n";
5440 my @realcmd = ( &translate_command($_[0]), @_[1..$#_] );
5441 my $cmd = join(" ", @realcmd);
5443 if ($cmd =~ s/(\s*&\s*)$//) {
5446 while($cmd =~ s/(\d*)(<|>)((\/(tmp|dev)\S+)|&\d+)\s*$//) { }
5447 $cmd =~ s/^\((.*)\)\s*$/$1/;
5449 &additional_log('exec', undef, $cmd);
5450 return system(@realcmd);
5453 =head2 backquote_logged(command)
5455 Executes a command and returns the output (like `command`), but also logs it.
5458 sub backquote_logged
5460 if (&is_readonly_mode()) {
5462 print STDERR "Vetoing command $_[0]\n";
5465 my $realcmd = &translate_command($_[0]);
5468 if ($cmd =~ s/(\s*&\s*)$//) {
5471 while($cmd =~ s/(\d*)(<|>)((\/(tmp\/.webmin|dev)\S+)|&\d+)\s*$//) { }
5472 $cmd =~ s/^\((.*)\)\s*$/$1/;
5474 &additional_log('exec', undef, $cmd);
5475 &webmin_debug_log('CMD', "cmd=$cmd") if ($gconfig{'debug_what_cmd'});
5479 =head2 backquote_with_timeout(command, timeout, safe?, [maxlines])
5481 Runs some command, waiting at most the given number of seconds for it to
5482 complete, and returns the output. The maxlines parameter sets the number
5483 of lines of output to capture. The safe parameter should be set to 1 if the
5484 command is safe for read-only mode users to run.
5487 sub backquote_with_timeout
5489 my $realcmd = &translate_command($_[0]);
5490 &webmin_debug_log('CMD', "cmd=$realcmd timeout=$_[1]")
5491 if ($gconfig{'debug_what_cmd'});
5493 my $pid = &open_execute_command(OUT, "($realcmd) <$null_file", 1, $_[2]);
5498 my $elapsed = time() - $start;
5499 last if ($elapsed > $_[1]);
5501 vec($rmask, fileno(OUT), 1) = 1;
5502 my $sel = select($rmask, undef, undef, $_[1] - $elapsed);
5503 last if (!$sel || $sel < 0);
5505 last if (!defined($line));
5508 if ($_[3] && $linecount >= $_[3]) {
5513 if (kill('TERM', $pid) && time() - $start >= $_[1]) {
5517 return wantarray ? ($out, $timed_out) : $out;
5520 =head2 backquote_command(command, safe?)
5522 Executes a command and returns the output (like `command`), subject to
5523 command translation. The safe parameter should be set to 1 if the command
5524 is safe for read-only mode users to run.
5527 sub backquote_command
5529 if (&is_readonly_mode() && !$_[1]) {
5530 print STDERR "Vetoing command $_[0]\n";
5534 my $realcmd = &translate_command($_[0]);
5535 &webmin_debug_log('CMD', "cmd=$realcmd") if ($gconfig{'debug_what_cmd'});
5539 =head2 kill_logged(signal, pid, ...)
5541 Like Perl's built-in kill function, but also logs the fact that some process
5542 was killed. On Windows, falls back to calling process.exe to terminate a
5548 return scalar(@_)-1 if (&is_readonly_mode());
5549 &webmin_debug_log('KILL', "signal=$_[0] pids=".join(" ", @_[1..@_-1]))
5550 if ($gconfig{'debug_what_procs'});
5551 &additional_log('kill', $_[0], join(" ", @_[1..@_-1])) if (@_ > 1);
5552 if ($gconfig{'os_type'} eq 'windows') {
5553 # Emulate some kills with process.exe
5554 my $arg = $_[0] eq "KILL" ? "-k" :
5555 $_[0] eq "TERM" ? "-q" :
5556 $_[0] eq "STOP" ? "-s" :
5557 $_[0] eq "CONT" ? "-r" : undef;
5559 foreach my $p (@_[1..@_-1]) {
5561 $ok ||= kill($_[0], $p);
5564 &execute_command("process $arg $p");
5576 =head2 rename_logged(old, new)
5578 Re-names a file and logs the rename. If the old and new files are on different
5579 filesystems, calls mv or the Windows rename function to do the job.
5584 &additional_log('rename', $_[0], $_[1]) if ($_[0] ne $_[1]);
5585 return &rename_file($_[0], $_[1]);
5588 =head2 rename_file(old, new)
5590 Renames a file or directory. If the old and new files are on different
5591 filesystems, calls mv or the Windows rename function to do the job.
5596 if (&is_readonly_mode()) {
5597 print STDERR "Vetoing rename from $_[0] to $_[1]\n";
5600 my $src = &translate_filename($_[0]);
5601 my $dst = &translate_filename($_[1]);
5602 &webmin_debug_log('RENAME', "src=$src dst=$dst")
5603 if ($gconfig{'debug_what_ops'});
5604 my $ok = rename($src, $dst);
5605 if (!$ok && $! !~ /permission/i) {
5606 # Try the mv command, in case this is a cross-filesystem rename
5607 if ($gconfig{'os_type'} eq 'windows') {
5608 # Need to use rename
5609 my $out = &backquote_command("rename ".quotemeta($_[0]).
5610 " ".quotemeta($_[1])." 2>&1");
5612 $! = $out if (!$ok);
5616 my $out = &backquote_command("mv ".quotemeta($_[0]).
5617 " ".quotemeta($_[1])." 2>&1");
5619 $! = $out if (!$ok);
5625 =head2 symlink_logged(src, dest)
5627 Create a symlink, and logs it. Effectively does the same thing as the Perl
5634 my $rv = &symlink_file($_[0], $_[1]);
5635 &unlock_file($_[1]);
5639 =head2 symlink_file(src, dest)
5641 Creates a soft link, unless in read-only mode. Effectively does the same thing
5642 as the Perl symlink function.
5647 if (&is_readonly_mode()) {
5648 print STDERR "Vetoing symlink from $_[0] to $_[1]\n";
5651 my $src = &translate_filename($_[0]);
5652 my $dst = &translate_filename($_[1]);
5653 &webmin_debug_log('SYMLINK', "src=$src dst=$dst")
5654 if ($gconfig{'debug_what_ops'});
5655 return symlink($src, $dst);
5658 =head2 link_file(src, dest)
5660 Creates a hard link, unless in read-only mode. The existing new link file
5661 will be deleted if necessary. Effectively the same as Perl's link function.
5666 if (&is_readonly_mode()) {
5667 print STDERR "Vetoing link from $_[0] to $_[1]\n";
5670 my $src = &translate_filename($_[0]);
5671 my $dst = &translate_filename($_[1]);
5672 &webmin_debug_log('LINK', "src=$src dst=$dst")
5673 if ($gconfig{'debug_what_ops'});
5674 unlink($dst); # make sure link works
5675 return link($src, $dst);
5678 =head2 make_dir(dir, perms, recursive)
5680 Creates a directory and sets permissions on it, unless in read-only mode.
5681 The perms parameter sets the octal permissions to apply, which unlike Perl's
5682 mkdir will really get set. The recursive flag can be set to 1 to have the
5683 function create parent directories too.
5688 my ($dir, $perms, $recur) = @_;
5689 if (&is_readonly_mode()) {
5690 print STDERR "Vetoing directory $dir\n";
5693 $dir = &translate_filename($dir);
5694 my $exists = -d $dir ? 1 : 0;
5695 return 1 if ($exists && $recur); # already exists
5696 &webmin_debug_log('MKDIR', $dir) if ($gconfig{'debug_what_ops'});
5697 my $rv = mkdir($dir, $perms);
5698 if (!$rv && $recur) {
5699 # Failed .. try mkdir -p
5700 my $param = $gconfig{'os_type'} eq 'windows' ? "" : "-p";
5701 my $ex = &execute_command("mkdir $param "."e_path($dir));
5707 chmod($perms, $dir);
5712 =head2 set_ownership_permissions(user, group, perms, file, ...)
5714 Sets the user, group owner and permissions on some files. The parameters are :
5716 =item user - UID or username to change the file owner to. If undef, then the owner is not changed.
5718 =item group - GID or group name to change the file group to. If undef, then the group is set to the user's primary group.
5720 =item perms - Octal permissions set to set on the file. If undef, they are left alone.
5722 =item file - One or more files or directories to modify.
5725 sub set_ownership_permissions
5727 my ($user, $group, $perms, @files) = @_;
5728 if (&is_readonly_mode()) {
5729 print STDERR "Vetoing permission changes on ",join(" ", @files),"\n";
5732 @files = map { &translate_filename($_) } @files;
5733 if ($gconfig{'debug_what_ops'}) {
5734 foreach my $f (@files) {
5735 &webmin_debug_log('PERMS',
5736 "file=$f user=$user group=$group perms=$perms");
5740 if (defined($user)) {
5741 my $uid = $user !~ /^\d+$/ ? getpwnam($user) : $user;
5743 if (defined($group)) {
5744 $gid = $group !~ /^\d+$/ ? getgrnam($group) : $group;
5747 my @uinfo = getpwuid($uid);
5750 $rv = chown($uid, $gid, @files);
5752 if ($rv && defined($perms)) {
5753 $rv = chmod($perms, @files);
5758 =head2 unlink_logged(file, ...)
5760 Like Perl's unlink function, but locks the files beforehand and un-locks them
5761 after so that the deletion is logged by Webmin.
5767 foreach my $f (@_) {
5768 if (!&test_lock($f)) {
5773 my @rv = &unlink_file(@_);
5774 foreach my $f (@_) {
5779 return wantarray ? @rv : $rv[0];
5782 =head2 unlink_file(file, ...)
5784 Deletes some files or directories. Like Perl's unlink function, but also
5785 recursively deletes directories with the rm command if needed.
5790 return 1 if (&is_readonly_mode());
5793 foreach my $f (@_) {
5794 &unflush_file_lines($f);
5795 my $realf = &translate_filename($f);
5796 &webmin_debug_log('UNLINK', $realf) if ($gconfig{'debug_what_ops'});
5798 if (!rmdir($realf)) {
5800 if ($gconfig{'os_type'} eq 'windows') {
5801 # Call del and rmdir commands
5804 my $out = `del /q "$qm" 2>&1`;
5806 $out = `rmdir "$qm" 2>&1`;
5811 my $qm = quotemeta($realf);
5812 $out = `rm -rf $qm 2>&1`;
5821 if (!unlink($realf)) {
5827 return wantarray ? ($rv, $err) : $rv;
5830 =head2 copy_source_dest(source, dest)
5832 Copy some file or directory to a new location. Returns 1 on success, or 0
5833 on failure - also sets $! on failure. If the source is a directory, uses
5834 piped tar commands to copy a whole directory structure including permissions
5838 sub copy_source_dest
5840 return (1, undef) if (&is_readonly_mode());
5841 my ($src, $dst) = @_;
5844 &webmin_debug_log('COPY', "src=$src dst=$dst")
5845 if ($gconfig{'debug_what_ops'});
5846 if ($gconfig{'os_type'} eq 'windows') {
5847 # No tar or cp on windows, so need to use copy command
5851 $out = &backquote_logged("xcopy \"$src\" \"$dst\" /Y /E /I 2>&1");
5854 $out = &backquote_logged("copy /Y \"$src\" \"$dst\" 2>&1");
5862 # A directory .. need to copy with tar command
5863 my @st = stat($src);
5866 &set_ownership_permissions($st[4], $st[5], $st[2], $dst);
5867 $out = &backquote_logged("(cd ".quotemeta($src)." ; tar cf - . | (cd ".quotemeta($dst)." ; tar xf -)) 2>&1");
5874 # Can just copy with cp
5875 my $out = &backquote_logged("cp -p ".quotemeta($src).
5876 " ".quotemeta($dst)." 2>&1");
5882 return wantarray ? ($ok, $err) : $ok;
5885 =head2 remote_session_name(host|&server)
5887 Generates a session ID for some server. For this server, this will always
5888 be an empty string. For a server object it will include the hostname and
5889 port and PID. For a server name, it will include the hostname and PID. For
5893 sub remote_session_name
5895 return ref($_[0]) && $_[0]->{'host'} && $_[0]->{'port'} ?
5896 "$_[0]->{'host'}:$_[0]->{'port'}.$$" :
5897 $_[0] eq "" || ref($_[0]) && $_[0]->{'id'} == 0 ? "" :
5898 ref($_[0]) ? "" : "$_[0].$$";
5901 =head2 remote_foreign_require(server, module, file)
5903 Connects to rpc.cgi on a remote webmin server and have it open a session
5904 to a process that will actually do the require and run functions. This is the
5905 equivalent for foreign_require, but for a remote Webmin system. The server
5906 parameter can either be a hostname of a system registered in the Webmin
5907 Servers Index module, or a hash reference for a system from that module.
5910 sub remote_foreign_require
5912 my $call = { 'action' => 'require',
5915 my $sn = &remote_session_name($_[0]);
5916 if ($remote_session{$sn}) {
5917 $call->{'session'} = $remote_session{$sn};
5920 $call->{'newsession'} = 1;
5922 my $rv = &remote_rpc_call($_[0], $call);
5923 if ($rv->{'session'}) {
5924 $remote_session{$sn} = $rv->{'session'};
5925 $remote_session_server{$sn} = $_[0];
5929 =head2 remote_foreign_call(server, module, function, [arg]*)
5931 Call a function on a remote server. Must have been setup first with
5932 remote_foreign_require for the same server and module. Equivalent to
5933 foreign_call, but with the extra server parameter to specify the remote
5937 sub remote_foreign_call
5939 return undef if (&is_readonly_mode());
5940 my $sn = &remote_session_name($_[0]);
5941 return &remote_rpc_call($_[0], { 'action' => 'call',
5944 'session' => $remote_session{$sn},
5945 'args' => [ @_[3 .. $#_] ] } );
5948 =head2 remote_foreign_check(server, module, [api-only])
5950 Checks if some module is installed and supported on a remote server. Equivilant
5951 to foreign_check, but for the remote Webmin system specified by the server
5955 sub remote_foreign_check
5957 return &remote_rpc_call($_[0], { 'action' => 'check',
5962 =head2 remote_foreign_config(server, module)
5964 Gets the configuration for some module from a remote server, as a hash.
5965 Equivalent to foreign_config, but for a remote system.
5968 sub remote_foreign_config
5970 return &remote_rpc_call($_[0], { 'action' => 'config',
5971 'module' => $_[1] });
5974 =head2 remote_eval(server, module, code)
5976 Evaluates some perl code in the context of a module on a remote webmin server.
5977 The server parameter must be the hostname of a remote system, module must
5978 be a module directory name, and code a string of Perl code to run. This can
5979 only be called after remote_foreign_require for the same server and module.
5984 return undef if (&is_readonly_mode());
5985 my $sn = &remote_session_name($_[0]);
5986 return &remote_rpc_call($_[0], { 'action' => 'eval',
5989 'session' => $remote_session{$sn} });
5992 =head2 remote_write(server, localfile, [remotefile], [remotebasename])
5994 Transfers some local file to another server via Webmin's RPC protocol, and
5995 returns the resulting remote filename. If the remotefile parameter is given,
5996 that is the destination filename which will be used. Otherwise a randomly
5997 selected temporary filename will be used, and returned by the function.
6002 return undef if (&is_readonly_mode());
6004 my $sn = &remote_session_name($_[0]);
6005 if (!$_[0] || $remote_server_version{$sn} >= 0.966) {
6006 # Copy data over TCP connection
6007 my $rv = &remote_rpc_call($_[0], { 'action' => 'tcpwrite',
6009 'name' => $_[3] } );
6011 my $serv = ref($_[0]) ? $_[0]->{'host'} : $_[0];
6012 &open_socket($serv || "localhost", $rv->[1], TWRITE, \$error);
6013 return &$main::remote_error_handler("Failed to transfer file : $error")
6016 while(read(FILE, $got, 1024) > 0) {
6020 shutdown(TWRITE, 1);
6022 if ($error && $error !~ /^OK/) {
6023 # Got back an error!
6024 return &$main::remote_error_handler("Failed to transfer file : $error");
6030 # Just pass file contents as parameters
6032 while(read(FILE, $got, 1024) > 0) {
6036 return &remote_rpc_call($_[0], { 'action' => 'write',
6039 'session' => $remote_session{$sn} });
6043 =head2 remote_read(server, localfile, remotefile)
6045 Transfers a file from a remote server to this system, using Webmin's RPC
6046 protocol. The server parameter must be the hostname of a system registered
6047 in the Webmin Servers Index module, localfile is the destination path on this
6048 system, and remotefile is the file to fetch from the remote server.
6053 my $sn = &remote_session_name($_[0]);
6054 if (!$_[0] || $remote_server_version{$sn} >= 0.966) {
6055 # Copy data over TCP connection
6056 my $rv = &remote_rpc_call($_[0], { 'action' => 'tcpread',
6057 'file' => $_[2] } );
6059 return &$main::remote_error_handler("Failed to transfer file : $rv->[1]");
6062 my $serv = ref($_[0]) ? $_[0]->{'host'} : $_[0];
6063 &open_socket($serv || "localhost", $rv->[1], TREAD, \$error);
6064 return &$main::remote_error_handler("Failed to transfer file : $error")
6067 open(FILE, ">$_[1]");
6068 while(read(TREAD, $got, 1024) > 0) {
6075 # Just get data as return value
6076 my $d = &remote_rpc_call($_[0], { 'action' => 'read',
6078 'session' => $remote_session{$sn} });
6079 open(FILE, ">$_[1]");
6085 =head2 remote_finished
6087 Close all remote sessions. This happens automatically after a while
6088 anyway, but this function should be called to clean things up faster.
6093 foreach my $sn (keys %remote_session) {
6094 my $server = $remote_session_server{$sn};
6095 &remote_rpc_call($server, { 'action' => 'quit',
6096 'session' => $remote_session{$sn} } );
6097 delete($remote_session{$sn});
6098 delete($remote_session_server{$sn});
6100 foreach my $fh (keys %fast_fh_cache) {
6102 delete($fast_fh_cache{$fh});
6106 =head2 remote_error_setup(&function)
6108 Sets a function to be called instead of &error when a remote RPC operation
6109 fails. Useful if you want to have more control over your remote operations.
6112 sub remote_error_setup
6114 $main::remote_error_handler = $_[0] || \&error;
6117 =head2 remote_rpc_call(server, &structure)
6119 Calls rpc.cgi on some server and passes it a perl structure (hash,array,etc)
6120 and then reads back a reply structure. This is mainly for internal use only,
6121 and is called by the other remote_* functions.
6127 my $sn = &remote_session_name($_[0]); # Will be undef for local connection
6129 # Server structure was given
6131 $serv->{'user'} || $serv->{'id'} == 0 ||
6132 return &$main::remote_error_handler(
6133 "No Webmin login set for server");
6136 # lookup the server in the webmin servers module if needed
6137 if (!%main::remote_servers_cache) {
6138 &foreign_require("servers", "servers-lib.pl");
6139 foreach $s (&foreign_call("servers", "list_servers")) {
6140 $main::remote_servers_cache{$s->{'host'}} = $s;
6141 $main::remote_servers_cache{$s->{'host'}.":".$s->{'port'}} = $s;
6144 $serv = $main::remote_servers_cache{$_[0]};
6145 $serv || return &$main::remote_error_handler(
6146 "No Webmin Servers entry for $_[0]");
6147 $serv->{'user'} || return &$main::remote_error_handler(
6148 "No login set for server $_[0]");
6150 my $ip = $serv->{'ip'} || $serv->{'host'};
6152 # Work out the username and password
6154 if ($serv->{'sameuser'}) {
6155 $user = $remote_user;
6156 defined($main::remote_pass) || return &$main::remote_error_handler(
6157 "Password for this server is not available");
6158 $pass = $main::remote_pass;
6161 $user = $serv->{'user'};
6162 $pass = $serv->{'pass'};
6165 if ($serv->{'fast'} || !$sn) {
6166 # Make TCP connection call to fastrpc.cgi
6167 if (!$fast_fh_cache{$sn} && $sn) {
6168 # Need to open the connection
6169 my $con = &make_http_connection(
6170 $ip, $serv->{'port'}, $serv->{'ssl'},
6171 "POST", "/fastrpc.cgi");
6172 return &$main::remote_error_handler(
6173 "Failed to connect to $serv->{'host'} : $con")
6175 &write_http_connection($con, "Host: $serv->{'host'}\r\n");
6176 &write_http_connection($con, "User-agent: Webmin\r\n");
6177 my $auth = &encode_base64("$user:$pass");
6179 &write_http_connection($con, "Authorization: basic $auth\r\n");
6180 &write_http_connection($con, "Content-length: ",
6181 length($tostr),"\r\n");
6182 &write_http_connection($con, "\r\n");
6183 &write_http_connection($con, $tostr);
6185 # read back the response
6186 my $line = &read_http_connection($con);
6187 $line =~ tr/\r\n//d;
6188 if ($line =~ /^HTTP\/1\..\s+401\s+/) {
6189 return &$main::remote_error_handler("Login to RPC server as $user rejected");
6191 $line =~ /^HTTP\/1\..\s+200\s+/ ||
6192 return &$main::remote_error_handler("HTTP error : $line");
6194 $line = &read_http_connection($con);
6195 $line =~ tr/\r\n//d;
6197 $line = &read_http_connection($con);
6198 if ($line =~ /^0\s+(.*)/) {
6199 return &$main::remote_error_handler("RPC error : $1");
6201 elsif ($line =~ /^1\s+(\S+)\s+(\S+)\s+(\S+)/ ||
6202 $line =~ /^1\s+(\S+)\s+(\S+)/) {
6203 # Started ok .. connect and save SID
6204 &close_http_connection($con);
6205 my ($port, $sid, $version, $error) = ($1, $2, $3);
6206 &open_socket($ip, $port, $sid, \$error);
6207 return &$main::remote_error_handler("Failed to connect to fastrpc.cgi : $error")
6209 $fast_fh_cache{$sn} = $sid;
6210 $remote_server_version{$sn} = $version;
6213 while($stuff = &read_http_connection($con)) {
6216 return &$main::remote_error_handler("Bad response from fastrpc.cgi : $line");
6219 elsif (!$fast_fh_cache{$sn}) {
6220 # Open the connection by running fastrpc.cgi locally
6221 pipe(RPCOUTr, RPCOUTw);
6225 open(STDOUT, ">&RPCOUTw");
6229 $ENV{'REQUEST_METHOD'} = 'GET';
6230 $ENV{'SCRIPT_NAME'} = '/fastrpc.cgi';
6231 $ENV{'SERVER_ROOT'} ||= $root_directory;
6233 if ($base_remote_user ne 'root' &&
6234 $base_remote_user ne 'admin') {
6235 # Need to fake up a login for the CGI!
6236 &read_acl(undef, \%acl, [ 'root' ]);
6237 $ENV{'BASE_REMOTE_USER'} =
6238 $ENV{'REMOTE_USER'} =
6239 $acl{'root'} ? 'root' : 'admin';
6241 delete($ENV{'FOREIGN_MODULE_NAME'});
6242 delete($ENV{'FOREIGN_ROOT_DIRECTORY'});
6243 chdir($root_directory);
6244 if (!exec("$root_directory/fastrpc.cgi")) {
6245 print "exec failed : $!\n";
6252 ($line = <RPCOUTr>) =~ tr/\r\n//d;
6256 if ($line =~ /^0\s+(.*)/) {
6257 return &$main::remote_error_handler("RPC error : $2");
6259 elsif ($line =~ /^1\s+(\S+)\s+(\S+)/) {
6260 # Started ok .. connect and save SID
6262 my ($port, $sid, $error) = ($1, $2, undef);
6263 &open_socket("localhost", $port, $sid, \$error);
6264 return &$main::remote_error_handler("Failed to connect to fastrpc.cgi : $error") if ($error);
6265 $fast_fh_cache{$sn} = $sid;
6272 &error("Bad response from fastrpc.cgi : $line");
6275 # Got a connection .. send off the request
6276 my $fh = $fast_fh_cache{$sn};
6277 my $tostr = &serialise_variable($_[1]);
6278 print $fh length($tostr)," $fh\n";
6282 return &$main::remote_error_handler(
6283 "Error reading response length from fastrpc.cgi : $!")
6285 my $rlen = int($rstr);
6286 my ($fromstr, $got);
6287 while(length($fromstr) < $rlen) {
6288 return &$main::remote_error_handler(
6289 "Failed to read from fastrpc.cgi : $!")
6290 if (read($fh, $got, $rlen - length($fromstr)) <= 0);
6293 my $from = &unserialise_variable($fromstr);
6295 # No response at all
6296 return &$main::remote_error_handler("Remote Webmin error");
6298 elsif (ref($from) ne 'HASH') {
6300 return &$main::remote_error_handler(
6301 "Invalid remote Webmin response : $from");
6303 elsif (!$from->{'status'}) {
6305 $from->{'rv'} =~ s/\s+at\s+(\S+)\s+line\s+(\d+)(,\s+<\S+>\s+line\s+(\d+))?//;
6306 return &$main::remote_error_handler($from->{'rv'});
6308 if (defined($from->{'arv'})) {
6309 return @{$from->{'arv'}};
6312 return $from->{'rv'};
6316 # Call rpc.cgi on remote server
6317 my $tostr = &serialise_variable($_[1]);
6319 my $con = &make_http_connection($ip, $serv->{'port'},
6320 $serv->{'ssl'}, "POST", "/rpc.cgi");
6321 return &$main::remote_error_handler("Failed to connect to $serv->{'host'} : $con") if (!ref($con));
6323 &write_http_connection($con, "Host: $serv->{'host'}\r\n");
6324 &write_http_connection($con, "User-agent: Webmin\r\n");
6325 my $auth = &encode_base64("$user:$pass");
6327 &write_http_connection($con, "Authorization: basic $auth\r\n");
6328 &write_http_connection($con, "Content-length: ",length($tostr),"\r\n");
6329 &write_http_connection($con, "\r\n");
6330 &write_http_connection($con, $tostr);
6332 # read back the response
6333 my $line = &read_http_connection($con);
6334 $line =~ tr/\r\n//d;
6335 if ($line =~ /^HTTP\/1\..\s+401\s+/) {
6336 return &$main::remote_error_handler("Login to RPC server as $user rejected");
6338 $line =~ /^HTTP\/1\..\s+200\s+/ || return &$main::remote_error_handler("RPC HTTP error : $line");
6340 $line = &read_http_connection($con);
6341 $line =~ tr/\r\n//d;
6344 while($line = &read_http_connection($con)) {
6348 my $from = &unserialise_variable($fromstr);
6349 return &$main::remote_error_handler("Invalid RPC login to $serv->{'host'}") if (!$from->{'status'});
6350 if (defined($from->{'arv'})) {
6351 return @{$from->{'arv'}};
6354 return $from->{'rv'};
6359 =head2 remote_multi_callback(&servers, parallel, &function, arg|&args, &returns, &errors, [module, library])
6361 Executes some function in parallel on multiple servers at once. Fills in
6362 the returns and errors arrays respectively. If the module and library
6363 parameters are given, that module is remotely required on the server first,
6364 to check if it is connectable. The parameters are :
6366 =item servers - A list of Webmin system hash references.
6368 =item parallel - Number of parallel operations to perform.
6370 =item function - Reference to function to call for each system.
6372 =item args - Additional parameters to the function.
6374 =item returns - Array ref to place return values into, in same order as servers.
6376 =item errors - Array ref to place error messages into.
6378 =item module - Optional module to require on the remote system first.
6380 =item library - Optional library to require in the module.
6383 sub remote_multi_callback
6385 my ($servs, $parallel, $func, $args, $rets, $errs, $mod, $lib) = @_;
6386 &remote_error_setup(\&remote_multi_callback_error);
6388 # Call the functions
6390 foreach my $g (@$servs) {
6396 $remote_multi_callback_err = undef;
6398 # Require the remote lib
6399 &remote_foreign_require($g->{'host'}, $mod, $lib);
6400 if ($remote_multi_callback_err) {
6401 # Failed .. return error
6402 print $wh &serialise_variable(
6403 [ undef, $remote_multi_callback_err ]);
6409 my $a = ref($args) ? $args->[$p] : $args;
6410 my $rv = &$func($g, $a);
6413 print $wh &serialise_variable(
6414 [ $rv, $remote_multi_callback_err ]);
6422 # Read back the results
6424 foreach my $g (@$servs) {
6428 $errs->[$p] = "Failed to read response from $g->{'host'}";
6431 my $rv = &unserialise_variable($line);
6433 $rets->[$p] = $rv->[0];
6434 $errs->[$p] = $rv->[1];
6439 &remote_error_setup(undef);
6442 sub remote_multi_callback_error
6444 $remote_multi_callback_err = $_[0];
6447 =head2 serialise_variable(variable)
6449 Converts some variable (maybe a scalar, hash ref, array ref or scalar ref)
6450 into a url-encoded string. In the cases of arrays and hashes, it is recursively
6451 called on each member to serialize the entire object.
6454 sub serialise_variable
6456 if (!defined($_[0])) {
6462 $rv = &urlize($_[0]);
6464 elsif ($r eq 'SCALAR') {
6465 $rv = &urlize(${$_[0]});
6467 elsif ($r eq 'ARRAY') {
6468 $rv = join(",", map { &urlize(&serialise_variable($_)) } @{$_[0]});
6470 elsif ($r eq 'HASH') {
6471 $rv = join(",", map { &urlize(&serialise_variable($_)).",".
6472 &urlize(&serialise_variable($_[0]->{$_})) }
6475 elsif ($r eq 'REF') {
6476 $rv = &serialise_variable(${$_[0]});
6478 elsif ($r eq 'CODE') {
6483 # An object - treat as a hash
6484 $r = "OBJECT ".&urlize($r);
6485 $rv = join(",", map { &urlize(&serialise_variable($_)).",".
6486 &urlize(&serialise_variable($_[0]->{$_})) }
6489 return ($r ? $r : 'VAL').",".$rv;
6492 =head2 unserialise_variable(string)
6494 Converts a string created by serialise_variable() back into the original
6495 scalar, hash ref, array ref or scalar ref. If the original variable was a Perl
6496 object, the same class is used on this system, if available.
6499 sub unserialise_variable
6501 my @v = split(/,/, $_[0]);
6503 if ($v[0] eq 'VAL') {
6504 @v = split(/,/, $_[0], -1);
6505 $rv = &un_urlize($v[1]);
6507 elsif ($v[0] eq 'SCALAR') {
6508 local $r = &un_urlize($v[1]);
6511 elsif ($v[0] eq 'ARRAY') {
6513 for(my $i=1; $i<@v; $i++) {
6514 push(@$rv, &unserialise_variable(&un_urlize($v[$i])));
6517 elsif ($v[0] eq 'HASH') {
6519 for(my $i=1; $i<@v; $i+=2) {
6520 $rv->{&unserialise_variable(&un_urlize($v[$i]))} =
6521 &unserialise_variable(&un_urlize($v[$i+1]));
6524 elsif ($v[0] eq 'REF') {
6525 local $r = &unserialise_variable($v[1]);
6528 elsif ($v[0] eq 'UNDEF') {
6531 elsif ($v[0] =~ /^OBJECT\s+(.*)$/) {
6532 # An object hash that we have to re-bless
6535 for(my $i=1; $i<@v; $i+=2) {
6536 $rv->{&unserialise_variable(&un_urlize($v[$i]))} =
6537 &unserialise_variable(&un_urlize($v[$i+1]));
6545 =head2 other_groups(user)
6547 Returns a list of secondary groups a user is a member of, as a list of
6556 while(my @g = getgrent()) {
6557 my @m = split(/\s+/, $g[3]);
6558 push(@rv, $g[2]) if (&indexof($user, @m) >= 0);
6560 endgrent() if ($gconfig{'os_type'} ne 'hpux');
6564 =head2 date_chooser_button(dayfield, monthfield, yearfield)
6566 Returns HTML for a button that pops up a data chooser window. The parameters
6569 =item dayfield - Name of the text field to place the day of the month into.
6571 =item monthfield - Name of the select field to select the month of the year in, indexed from 1.
6573 =item yearfield - Name of the text field to place the year into.
6576 sub date_chooser_button
6578 return &theme_date_chooser_button(@_)
6579 if (defined(&theme_date_chooser_button));
6580 my ($w, $h) = (250, 225);
6581 if ($gconfig{'db_sizedate'}) {
6582 ($w, $h) = split(/x/, $gconfig{'db_sizedate'});
6584 return "<input type=button onClick='window.dfield = form.$_[0]; window.mfield = form.$_[1]; window.yfield = form.$_[2]; window.open(\"$gconfig{'webprefix'}/date_chooser.cgi?day=\"+escape(dfield.value)+\"&month=\"+escape(mfield.selectedIndex)+\"&year=\"+yfield.value, \"chooser\", \"toolbar=no,menubar=no,scrollbars=yes,width=$w,height=$h\")' value=\"...\">\n";
6587 =head2 help_file(module, file)
6589 Returns the path to a module's help file of some name, typically under the
6590 help directory with a .html extension.
6595 my $mdir = &module_root_directory($_[0]);
6596 my $dir = "$mdir/help";
6597 foreach my $o (@lang_order_list) {
6598 my $lang = "$dir/$_[1].$o.html";
6599 return $lang if (-r $lang);
6601 return "$dir/$_[1].html";
6606 Seeds the random number generator, if not already done in this script. On Linux
6607 this makes use of the current time, process ID and a read from /dev/urandom.
6608 On other systems, only the current time and process ID are used.
6613 if (!$main::done_seed_random) {
6614 if (open(RANDOM, "/dev/urandom")) {
6616 read(RANDOM, $buf, 4);
6618 srand(time() ^ $$ ^ $buf);
6623 $main::done_seed_random = 1;
6627 =head2 disk_usage_kb(directory)
6629 Returns the number of kB used by some directory and all subdirs. Implemented
6630 by calling the C<du -k> command.
6635 my $dir = &translate_filename($_[0]);
6637 my $ex = &execute_command("du -sk ".quotemeta($dir), undef, \$out, undef, 0, 1);
6639 &execute_command("du -s ".quotemeta($dir), undef, \$out, undef, 0, 1);
6641 return $out =~ /^([0-9]+)/ ? $1 : "???";
6644 =head2 recursive_disk_usage(directory, [skip-regexp], [only-regexp])
6646 Returns the number of bytes taken up by all files in some directory and all
6647 sub-directories, by summing up their lengths. The disk_usage_kb is more
6648 reflective of reality, as the filesystem typically pads file sizes to 1k or
6652 sub recursive_disk_usage
6654 my $dir = &translate_filename($_[0]);
6661 my @st = stat($dir);
6667 my @files = readdir(DIR);
6669 foreach my $f (@files) {
6670 next if ($f eq "." || $f eq "..");
6671 next if ($skip && $f =~ /$skip/);
6672 next if ($only && $f !~ /$only/);
6673 $rv += &recursive_disk_usage("$dir/$f", $skip, $only);
6679 =head2 help_search_link(term, [ section, ... ] )
6681 Returns HTML for a link to the man module for searching local and online
6682 docs for various search terms. The term parameter can either be a single
6683 word like 'bind', or a space-separated list of words. This function is typically
6684 used by modules that want to refer users to additional documentation in man
6685 pages or local system doc files.
6688 sub help_search_link
6690 if (&foreign_available("man") && !$tconfig{'nosearch'}) {
6691 my $for = &urlize(shift(@_));
6692 return "<a href='$gconfig{'webprefix'}/man/search.cgi?".
6693 join("&", map { "section=$_" } @_)."&".
6694 "for=$for&exact=1&check=".&get_module_name()."'>".
6695 $text{'helpsearch'}."</a>\n";
6702 =head2 make_http_connection(host, port, ssl, method, page, [&headers])
6704 Opens a connection to some HTTP server, maybe through a proxy, and returns
6705 a handle object. The handle can then be used to send additional headers
6706 and read back a response. If anything goes wrong, returns an error string.
6707 The parameters are :
6709 =item host - Hostname or IP address of the webserver to connect to.
6711 =item port - HTTP port number to connect to.
6713 =item ssl - Set to 1 to connect in SSL mode.
6715 =item method - HTTP method, like GET or POST.
6717 =item page - Page to request on the webserver, like /foo/index.html
6719 =item headers - Array ref of additional HTTP headers, each of which is a 2-element array ref.
6722 sub make_http_connection
6724 my ($host, $port, $ssl, $method, $page, $headers) = @_;
6727 foreach my $h (@$headers) {
6728 $htxt .= $h->[0].": ".$h->[1]."\r\n";
6732 if (&is_readonly_mode()) {
6733 return "HTTP connections not allowed in readonly mode";
6735 my $rv = { 'fh' => time().$$ };
6738 eval "use Net::SSLeay";
6739 $@ && return $text{'link_essl'};
6740 eval "Net::SSLeay::SSLeay_add_ssl_algorithms()";
6741 eval "Net::SSLeay::load_error_strings()";
6742 $rv->{'ssl_ctx'} = Net::SSLeay::CTX_new() ||
6743 return "Failed to create SSL context";
6744 $rv->{'ssl_con'} = Net::SSLeay::new($rv->{'ssl_ctx'}) ||
6745 return "Failed to create SSL connection";
6747 if ($gconfig{'http_proxy'} =~ /^http:\/\/(\S+):(\d+)/ &&
6748 !&no_proxy($host)) {
6751 &open_socket($1, $2, $rv->{'fh'}, \$error);
6754 my $fh = $rv->{'fh'};
6755 print $fh "CONNECT $host:$port HTTP/1.0\r\n";
6756 if ($gconfig{'proxy_user'}) {
6757 my $auth = &encode_base64(
6758 "$gconfig{'proxy_user'}:".
6759 "$gconfig{'proxy_pass'}");
6760 $auth =~ tr/\r\n//d;
6761 print $fh "Proxy-Authorization: Basic $auth\r\n";
6765 if ($line =~ /^HTTP(\S+)\s+(\d+)\s+(.*)/) {
6766 return "Proxy error : $3" if ($2 != 200);
6769 return "Proxy error : $line";
6774 elsif (!$gconfig{'proxy_fallback'}) {
6775 # Connection to proxy failed - give up
6782 &open_socket($host, $port, $rv->{'fh'}, \$error);
6783 return $error if ($error);
6785 Net::SSLeay::set_fd($rv->{'ssl_con'}, fileno($rv->{'fh'}));
6786 Net::SSLeay::connect($rv->{'ssl_con'}) ||
6787 return "SSL connect() failed";
6788 my $rtxt = "$method $page HTTP/1.0\r\n".$htxt;
6789 Net::SSLeay::write($rv->{'ssl_con'}, $rtxt);
6792 # Plain HTTP request
6794 if ($gconfig{'http_proxy'} =~ /^http:\/\/(\S+):(\d+)/ &&
6795 !&no_proxy($host)) {
6798 &open_socket($1, $2, $rv->{'fh'}, \$error);
6802 my $fh = $rv->{'fh'};
6803 my $rtxt = $method." ".
6804 "http://$host:$port$page HTTP/1.0\r\n";
6805 if ($gconfig{'proxy_user'}) {
6806 my $auth = &encode_base64(
6807 "$gconfig{'proxy_user'}:".
6808 "$gconfig{'proxy_pass'}");
6809 $auth =~ tr/\r\n//d;
6810 $rtxt .= "Proxy-Authorization: Basic $auth\r\n";
6815 elsif (!$gconfig{'proxy_fallback'}) {
6820 # Connecting directly
6822 &open_socket($host, $port, $rv->{'fh'}, \$error);
6823 return $error if ($error);
6824 my $fh = $rv->{'fh'};
6825 my $rtxt = "$method $page HTTP/1.0\r\n".$htxt;
6832 =head2 read_http_connection(&handle, [bytes])
6834 Reads either one line or up to the specified number of bytes from the handle,
6835 originally supplied by make_http_connection.
6838 sub read_http_connection
6842 if ($h->{'ssl_con'}) {
6845 while(($idx = index($h->{'buffer'}, "\n")) < 0) {
6846 # need to read more..
6847 if (!($more = Net::SSLeay::read($h->{'ssl_con'}))) {
6849 $rv = $h->{'buffer'};
6850 delete($h->{'buffer'});
6853 $h->{'buffer'} .= $more;
6855 $rv = substr($h->{'buffer'}, 0, $idx+1);
6856 $h->{'buffer'} = substr($h->{'buffer'}, $idx+1);
6859 if (length($h->{'buffer'})) {
6860 $rv = $h->{'buffer'};
6861 delete($h->{'buffer'});
6864 $rv = Net::SSLeay::read($h->{'ssl_con'}, $_[1]);
6870 read($h->{'fh'}, $rv, $_[1]) > 0 || return undef;
6873 my $fh = $h->{'fh'};
6877 $rv = undef if ($rv eq "");
6881 =head2 write_http_connection(&handle, [data+])
6883 Writes the given data to the given HTTP connection handle.
6886 sub write_http_connection
6889 my $fh = $h->{'fh'};
6891 if ($h->{'ssl_ctx'}) {
6892 foreach my $s (@_) {
6893 my $ok = Net::SSLeay::write($h->{'ssl_con'}, $s);
6894 $allok = 0 if (!$ok);
6898 my $ok = (print $fh @_);
6899 $allok = 0 if (!$ok);
6904 =head2 close_http_connection(&handle)
6906 Closes a connection to an HTTP server, identified by the given handle.
6909 sub close_http_connection
6915 =head2 clean_environment
6917 Deletes any environment variables inherited from miniserv so that they
6918 won't be passed to programs started by webmin. This is useful when calling
6919 programs that check for CGI-related environment variables and modify their
6920 behaviour, and to avoid passing sensitive variables to un-trusted programs.
6923 sub clean_environment
6925 %UNCLEAN_ENV = %ENV;
6926 foreach my $k (keys %ENV) {
6927 if ($k =~ /^(HTTP|VIRTUALSERVER|QUOTA|USERADMIN)_/) {
6931 foreach my $e ('WEBMIN_CONFIG', 'SERVER_NAME', 'CONTENT_TYPE', 'REQUEST_URI',
6932 'PATH_INFO', 'WEBMIN_VAR', 'REQUEST_METHOD', 'GATEWAY_INTERFACE',
6933 'QUERY_STRING', 'REMOTE_USER', 'SERVER_SOFTWARE', 'SERVER_PROTOCOL',
6934 'REMOTE_HOST', 'SERVER_PORT', 'DOCUMENT_ROOT', 'SERVER_ROOT',
6935 'MINISERV_CONFIG', 'SCRIPT_NAME', 'SERVER_ADMIN', 'CONTENT_LENGTH',
6936 'HTTPS', 'FOREIGN_MODULE_NAME', 'FOREIGN_ROOT_DIRECTORY',
6937 'SCRIPT_FILENAME', 'PATH_TRANSLATED', 'BASE_REMOTE_USER',
6938 'DOCUMENT_REALROOT', 'MINISERV_CONFIG', 'MYSQL_PWD',
6944 =head2 reset_environment
6946 Puts the environment back how it was before clean_environment was callled.
6949 sub reset_environment
6952 foreach my $k (keys %UNCLEAN_ENV) {
6953 $ENV{$k} = $UNCLEAN_ENV{$k};
6955 undef(%UNCLEAN_ENV);
6959 =head2 progress_callback
6961 Never called directly, but useful for passing to &http_download to print
6962 out progress of an HTTP request.
6965 sub progress_callback
6967 if (defined(&theme_progress_callback)) {
6968 # Call the theme override
6969 return &theme_progress_callback(@_);
6973 print $progress_callback_prefix;
6975 $progress_size = $_[1];
6976 $progress_step = int($_[1] / 10);
6977 print &text('progress_size2', $progress_callback_url,
6978 &nice_size($progress_size)),"<br>\n";
6981 $progress_size = undef;
6982 print &text('progress_nosize', $progress_callback_url),"<br>\n";
6984 $last_progress_time = $last_progress_size = undef;
6986 elsif ($_[0] == 3) {
6988 my $sp = $progress_callback_prefix.(" " x 5);
6989 if ($progress_size) {
6990 # And we have a size to compare against
6991 my $st = int(($_[1] * 10) / $progress_size);
6992 my $time_now = time();
6993 if ($st != $progress_step ||
6994 $time_now - $last_progress_time > 60) {
6995 # Show progress every 10% or 60 seconds
6996 print $sp,&text('progress_datan', &nice_size($_[1]),
6997 int($_[1]*100/$progress_size)),"<br>\n";
6998 $last_progress_time = $time_now;
7000 $progress_step = $st;
7003 # No total size .. so only show in 100k jumps
7004 if ($_[1] > $last_progress_size+100*1024) {
7005 print $sp,&text('progress_data2n',
7006 &nice_size($_[1])),"<br>\n";
7007 $last_progress_size = $_[1];
7011 elsif ($_[0] == 4) {
7012 # All done downloading
7013 print $progress_callback_prefix,&text('progress_done'),"<br>\n";
7015 elsif ($_[0] == 5) {
7016 # Got new location after redirect
7017 $progress_callback_url = $_[1];
7019 elsif ($_[0] == 6) {
7021 $progress_callback_url = $_[1];
7022 print &text('progress_incache', $progress_callback_url),"<br>\n";
7026 =head2 switch_to_remote_user
7028 Changes the user and group of the current process to that of the unix user
7029 with the same name as the current webmin login, or fails if there is none.
7030 This should be called by Usermin module scripts that only need to run with
7031 limited permissions.
7034 sub switch_to_remote_user
7036 @remote_user_info = $remote_user ? getpwnam($remote_user) :
7038 @remote_user_info || &error(&text('switch_remote_euser', $remote_user));
7039 &create_missing_homedir(\@remote_user_info);
7041 &switch_to_unix_user(\@remote_user_info);
7042 $ENV{'USER'} = $ENV{'LOGNAME'} = $remote_user;
7043 $ENV{'HOME'} = $remote_user_info[7];
7045 # Export global variables to caller
7046 if ($main::export_to_caller) {
7047 my ($callpkg) = caller();
7048 eval "\@${callpkg}::remote_user_info = \@remote_user_info";
7052 =head2 switch_to_unix_user(&user-details)
7054 Switches the current process to the UID and group ID from the given list
7055 of user details, which must be in the format returned by getpwnam.
7058 sub switch_to_unix_user
7061 if (!defined($uinfo->[0])) {
7062 # No username given, so just use given GID
7063 ($(, $)) = ( $uinfo->[3], "$uinfo->[3] $uinfo->[3]" );
7066 # Use all groups from user
7067 ($(, $)) = ( $uinfo->[3],
7068 "$uinfo->[3] ".join(" ", $uinfo->[3],
7069 &other_groups($uinfo->[0])) );
7072 POSIX::setuid($uinfo->[2]);
7074 if ($< != $uinfo->[2] || $> != $uinfo->[2]) {
7075 ($>, $<) = ( $uinfo->[2], $uinfo->[2] );
7079 =head2 eval_as_unix_user(username, &code)
7081 Runs some code fragment with the effective UID and GID switch to that
7082 of the given Unix user, so that file IO takes place with his permissions.
7086 sub eval_as_unix_user
7088 my ($user, $code) = @_;
7089 my @uinfo = getpwnam($user);
7090 if (!scalar(@uinfo)) {
7091 &error("eval_as_unix_user called with invalid user $user");
7093 $) = $uinfo[3]." ".join(" ", $uinfo[3], &other_groups($user));
7097 local $main::error_must_die = 1;
7104 $err =~ s/\s+at\s+(\/\S+)\s+line\s+(\d+)\.?//;
7107 return wantarray ? @rv : $rv[0];
7110 =head2 create_user_config_dirs
7112 Creates per-user config directories and sets $user_config_directory and
7113 $user_module_config_directory to them. Also reads per-user module configs
7114 into %userconfig. This should be called by Usermin module scripts that need
7115 to store per-user preferences or other settings.
7118 sub create_user_config_dirs
7120 return if (!$gconfig{'userconfig'});
7121 my @uinfo = @remote_user_info ? @remote_user_info : getpwnam($remote_user);
7122 return if (!@uinfo || !$uinfo[7]);
7123 &create_missing_homedir(\@uinfo);
7124 $user_config_directory = "$uinfo[7]/$gconfig{'userconfig'}";
7125 if (!-d $user_config_directory) {
7126 mkdir($user_config_directory, 0700) ||
7127 &error("Failed to create $user_config_directory : $!");
7128 if ($< == 0 && $uinfo[2]) {
7129 chown($uinfo[2], $uinfo[3], $user_config_directory);
7132 if (&get_module_name()) {
7133 $user_module_config_directory = $user_config_directory."/".
7135 if (!-d $user_module_config_directory) {
7136 mkdir($user_module_config_directory, 0700) ||
7137 &error("Failed to create $user_module_config_directory : $!");
7138 if ($< == 0 && $uinfo[2]) {
7139 chown($uinfo[2], $uinfo[3], $user_config_directory);
7143 &read_file_cached("$module_root_directory/defaultuconfig",
7145 &read_file_cached("$module_config_directory/uconfig", \%userconfig);
7146 &read_file_cached("$user_module_config_directory/config",
7150 # Export global variables to caller
7151 if ($main::export_to_caller) {
7152 my ($callpkg) = caller();
7153 foreach my $v ('$user_config_directory',
7154 '$user_module_config_directory', '%userconfig') {
7155 my ($vt, $vn) = split('', $v, 2);
7156 eval "${vt}${callpkg}::${vn} = ${vt}${vn}";
7161 =head2 create_missing_homedir(&uinfo)
7163 If auto homedir creation is enabled, create one for this user if needed.
7164 For internal use only.
7167 sub create_missing_homedir
7170 if (!-e $uinfo->[7] && $gconfig{'create_homedir'}) {
7171 # Use has no home dir .. make one
7172 system("mkdir -p ".quotemeta($uinfo->[7]));
7173 chown($uinfo->[2], $uinfo->[3], $uinfo->[7]);
7174 if ($gconfig{'create_homedir_perms'} ne '') {
7175 chmod(oct($gconfig{'create_homedir_perms'}), $uinfo->[7]);
7180 =head2 filter_javascript(text)
7182 Disables all javascript <script>, onClick= and so on tags in the given HTML,
7183 and returns the new HTML. Useful for displaying HTML from an un-trusted source.
7186 sub filter_javascript
7189 $rv =~ s/<\s*script[^>]*>([\000-\377]*?)<\s*\/script\s*>//gi;
7190 $rv =~ s/(on(Abort|Blur|Change|Click|DblClick|DragDrop|Error|Focus|KeyDown|KeyPress|KeyUp|Load|MouseDown|MouseMove|MouseOut|MouseOver|MouseUp|Move|Reset|Resize|Select|Submit|Unload)=)/x$1/gi;
7191 $rv =~ s/(javascript:)/x$1/gi;
7192 $rv =~ s/(vbscript:)/x$1/gi;
7196 =head2 resolve_links(path)
7198 Given a path that may contain symbolic links, returns the real path.
7204 $path =~ s/\/+/\//g;
7205 $path =~ s/\/$// if ($path ne "/");
7206 my @p = split(/\/+/, $path);
7208 for(my $i=0; $i<@p; $i++) {
7209 my $sofar = "/".join("/", @p[0..$i]);
7210 my $lnk = readlink($sofar);
7211 if ($lnk eq $sofar) {
7212 # Link to itself! Cannot do anything more really ..
7215 elsif ($lnk =~ /^\//) {
7216 # Link is absolute..
7217 return &resolve_links($lnk."/".join("/", @p[$i+1 .. $#p]));
7221 return &resolve_links("/".join("/", @p[0..$i-1])."/".$lnk."/".join("/", @p[$i+1 .. $#p]));
7227 =head2 simplify_path(path, bogus)
7229 Given a path, maybe containing elements ".." and "." , convert it to a
7230 clean, absolute form. Returns undef if this is not possible.
7238 my @bits = split(/\/+/, $dir);
7241 foreach my $b (@bits) {
7245 elsif ($b eq "..") {
7247 if (scalar(@fixedbits) == 0) {
7248 # Cannot! Already at root!
7255 push(@fixedbits, $b);
7258 return "/".join('/', @fixedbits);
7261 =head2 same_file(file1, file2)
7263 Returns 1 if two files are actually the same
7268 return 1 if ($_[0] eq $_[1]);
7269 return 0 if ($_[0] !~ /^\// || $_[1] !~ /^\//);
7270 my @stat1 = $stat_cache{$_[0]} ? @{$stat_cache{$_[0]}}
7271 : (@{$stat_cache{$_[0]}} = stat($_[0]));
7272 my @stat2 = $stat_cache{$_[1]} ? @{$stat_cache{$_[1]}}
7273 : (@{$stat_cache{$_[1]}} = stat($_[1]));
7274 return 0 if (!@stat1 || !@stat2);
7275 return $stat1[0] == $stat2[0] && $stat1[1] == $stat2[1];
7278 =head2 flush_webmin_caches
7280 Clears all in-memory and on-disk caches used by Webmin.
7283 sub flush_webmin_caches
7285 undef(%main::read_file_cache);
7286 undef(%main::acl_hash_cache);
7287 undef(%main::acl_array_cache);
7288 undef(%main::has_command_cache);
7289 undef(@main::list_languages_cache);
7290 undef($main::got_list_usermods_cache);
7291 undef(@main::list_usermods_cache);
7292 undef(%main::foreign_installed_cache);
7293 unlink("$config_directory/module.infos.cache");
7294 &get_all_module_infos();
7297 =head2 list_usermods
7299 Returns a list of additional module restrictions. For internal use in
7305 if (!$main::got_list_usermods_cache) {
7306 @main::list_usermods_cache = ( );
7308 open(USERMODS, "$config_directory/usermin.mods");
7310 if (/^([^:]+):(\+|-|):(.*)/) {
7311 push(@main::list_usermods_cache,
7312 [ $1, $2, [ split(/\s+/, $3) ] ]);
7316 $main::got_list_usermods_cache = 1;
7318 return @main::list_usermods_cache;
7321 =head2 available_usermods(&allmods, &usermods)
7323 Returns a list of modules that are available to the given user, based
7324 on usermod additional/subtractions. For internal use by Usermin only.
7327 sub available_usermods
7329 return @{$_[0]} if (!@{$_[1]});
7331 my %mods = map { $_->{'dir'}, 1 } @{$_[0]};
7332 my @uinfo = @remote_user_info;
7333 @uinfo = getpwnam($remote_user) if (!@uinfo);
7334 foreach my $u (@{$_[1]}) {
7336 if ($u->[0] eq "*" || $u->[0] eq $remote_user) {
7339 elsif ($u->[0] =~ /^\@(.*)$/) {
7340 # Check for group membership
7341 my @ginfo = getgrnam($1);
7342 $applies++ if (@ginfo && ($ginfo[2] == $uinfo[3] ||
7343 &indexof($remote_user, split(/\s+/, $ginfo[3])) >= 0));
7345 elsif ($u->[0] =~ /^\//) {
7346 # Check users and groups in file
7348 open(USERFILE, $u->[0]);
7351 if ($_ eq $remote_user) {
7354 elsif (/^\@(.*)$/) {
7355 my @ginfo = getgrnam($1);
7357 if (@ginfo && ($ginfo[2] == $uinfo[3] ||
7358 &indexof($remote_user,
7359 split(/\s+/, $ginfo[3])) >= 0));
7366 if ($u->[1] eq "+") {
7367 map { $mods{$_}++ } @{$u->[2]};
7369 elsif ($u->[1] eq "-") {
7370 map { delete($mods{$_}) } @{$u->[2]};
7374 map { $mods{$_}++ } @{$u->[2]};
7378 return grep { $mods{$_->{'dir'}} } @{$_[0]};
7381 =head2 get_available_module_infos(nocache)
7383 Returns a list of modules available to the current user, based on
7384 operating system support, access control and usermod restrictions. Useful
7385 in themes that need to display a list of modules the user can use.
7386 Each element of the returned array is a hash reference in the same format as
7387 returned by get_module_info.
7390 sub get_available_module_infos
7393 &read_acl(\%acl, \%uacl, [ $base_remote_user ]);
7394 my $risk = $gconfig{'risk_'.$base_remote_user};
7396 foreach my $minfo (&get_all_module_infos($_[0])) {
7397 next if (!&check_os_support($minfo));
7399 # Check module risk level
7400 next if ($risk ne 'high' && $minfo->{'risk'} &&
7401 $minfo->{'risk'} !~ /$risk/);
7405 next if (!$acl{$base_remote_user,$minfo->{'dir'}} &&
7406 !$acl{$base_remote_user,"*"});
7408 next if (&is_readonly_mode() && !$minfo->{'readonly'});
7412 # Check usermod restrictions
7413 my @usermods = &list_usermods();
7414 @rv = sort { $a->{'desc'} cmp $b->{'desc'} }
7415 &available_usermods(\@rv, \@usermods);
7417 # Check RBAC restrictions
7419 foreach my $m (@rv) {
7420 if (&supports_rbac($m->{'dir'}) &&
7421 &use_rbac_module_acl(undef, $m->{'dir'})) {
7422 local $rbacs = &get_rbac_module_acl($remote_user,
7430 # Module or system doesn't support RBAC
7431 push(@rbacrv, $m) if (!$gconfig{'rbacdeny_'.$base_remote_user});
7437 if (defined(&theme_foreign_available)) {
7438 foreach my $m (@rbacrv) {
7439 if (&theme_foreign_available($m->{'dir'})) {
7448 # Check licence module vetos
7450 if ($main::licence_module) {
7451 foreach my $m (@themerv) {
7452 if (&foreign_call($main::licence_module,
7453 "check_module_licence", $m->{'dir'})) {
7465 =head2 get_visible_module_infos(nocache)
7467 Like get_available_module_infos, but excludes hidden modules from the list.
7468 Each element of the returned array is a hash reference in the same format as
7469 returned by get_module_info.
7472 sub get_visible_module_infos
7475 my $pn = &get_product_name();
7476 return grep { !$_->{'hidden'} &&
7477 !$_->{$pn.'_hidden'} } &get_available_module_infos($nocache);
7480 =head2 get_visible_modules_categories(nocache)
7482 Returns a list of Webmin module categories, each of which is a hash ref
7483 with 'code', 'desc' and 'modules' keys. The modules value is an array ref
7484 of modules in the category, in the format returned by get_module_info.
7485 Un-used modules are automatically assigned to the 'unused' category, and
7486 those with no category are put into 'others'.
7489 sub get_visible_modules_categories
7492 my @mods = &get_visible_module_infos($nocache);
7494 if (&get_product_name() eq 'webmin') {
7495 @unmods = grep { $_->{'installed'} eq '0' } @mods;
7496 @mods = grep { $_->{'installed'} ne '0' } @mods;
7498 my %cats = &list_categories(\@mods);
7500 foreach my $c (keys %cats) {
7501 my $cat = { 'code' => $c || 'other',
7502 'desc' => $cats{$c} };
7503 $cat->{'modules'} = [ grep { $_->{'category'} eq $c } @mods ];
7506 @rv = sort { ($b->{'code'} eq "others" ? "" : $b->{'code'}) cmp
7507 ($a->{'code'} eq "others" ? "" : $a->{'code'}) } @rv;
7509 # Add un-installed modules in magic category
7510 my $cat = { 'code' => 'unused',
7511 'desc' => $text{'main_unused'},
7513 'modules' => \@unmods };
7519 =head2 is_under_directory(directory, file)
7521 Returns 1 if the given file is under the specified directory, 0 if not.
7522 Symlinks are taken into account in the file to find it's 'real' location.
7525 sub is_under_directory
7527 my ($dir, $file) = @_;
7528 return 1 if ($dir eq "/");
7529 return 0 if ($file =~ /\.\./);
7530 my $ld = &resolve_links($dir);
7532 return &is_under_directory($ld, $file);
7534 my $lp = &resolve_links($file);
7536 return &is_under_directory($dir, $lp);
7538 return 0 if (length($file) < length($dir));
7539 return 1 if ($dir eq $file);
7541 return substr($file, 0, length($dir)) eq $dir;
7544 =head2 parse_http_url(url, [basehost, baseport, basepage, basessl])
7546 Given an absolute URL, returns the host, port, page and ssl flag components.
7547 If a username and password are given before the hostname, return those too.
7548 Relative URLs can also be parsed, if the base information is provided.
7553 if ($_[0] =~ /^(http|https):\/\/([^\@]+\@)?\[([^\]]+)\](:(\d+))?(\/\S*)?$/ ||
7554 $_[0] =~ /^(http|https):\/\/([^\@]+\@)?([^:\/]+)(:(\d+))?(\/\S*)?$/) {
7556 my $ssl = $1 eq 'https';
7557 my @rv = ($3, $4 ? $5 : $ssl ? 443 : 80, $6 || "/", $ssl);
7558 if ($2 =~ /^([^:]+):(\S+)\@/) {
7567 elsif ($_[0] =~ /^\/\S*$/) {
7568 # A relative to the server URL
7569 return ($_[1], $_[2], $_[0], $_[4], $_[5], $_[6]);
7572 # A relative to the directory URL
7574 $page =~ s/[^\/]+$//;
7575 return ($_[1], $_[2], $page.$_[0], $_[4], $_[5], $_[6]);
7579 =head2 check_clicks_function
7581 Returns HTML for a JavaScript function called check_clicks that returns
7582 true when first called, but false subsequently. Useful on onClick for
7583 critical buttons. Deprecated, as this method of preventing duplicate actions
7587 sub check_clicks_function
7592 function check_clicks(form)
7599 for(i=0; i<form.length; i++)
7600 form.elements[i].disabled = true;
7609 =head2 load_entities_map
7611 Returns a hash ref containing mappings between HTML entities (like ouml) and
7612 ascii values (like 246). Mainly for internal use.
7615 sub load_entities_map
7617 if (!%entities_map_cache) {
7619 open(EMAP, "$root_directory/entities_map.txt");
7621 if (/^(\d+)\s+(\S+)/) {
7622 $entities_map_cache{$2} = $1;
7627 return \%entities_map_cache;
7630 =head2 entities_to_ascii(string)
7632 Given a string containing HTML entities like ö and 7, replace them
7633 with their ASCII equivalents.
7636 sub entities_to_ascii
7639 my $emap = &load_entities_map();
7640 $str =~ s/&([a-z]+);/chr($emap->{$1})/ge;
7641 $str =~ s/&#(\d+);/chr($1)/ge;
7645 =head2 get_product_name
7647 Returns either 'webmin' or 'usermin', depending on which program the current
7648 module is in. Useful for modules that can be installed into either.
7651 sub get_product_name
7653 return $gconfig{'product'} if (defined($gconfig{'product'}));
7654 return defined($gconfig{'userconfig'}) ? 'usermin' : 'webmin';
7659 Returns the character set for the current language, such as iso-8859-1.
7664 my $charset = defined($gconfig{'charset'}) ? $gconfig{'charset'} :
7665 $current_lang_info->{'charset'} ?
7666 $current_lang_info->{'charset'} : $default_charset;
7670 =head2 get_display_hostname
7672 Returns the system's hostname for UI display purposes. This may be different
7673 from the actual hostname if you administrator has configured it so in the
7674 Webmin Configuration module.
7677 sub get_display_hostname
7679 if ($gconfig{'hostnamemode'} == 0) {
7680 return &get_system_hostname();
7682 elsif ($gconfig{'hostnamemode'} == 3) {
7683 return $gconfig{'hostnamedisplay'};
7686 my $h = $ENV{'HTTP_HOST'};
7688 if ($gconfig{'hostnamemode'} == 2) {
7689 $h =~ s/^(www|ftp|mail)\.//i;
7695 =head2 save_module_config([&config], [modulename])
7697 Saves the configuration for some module. The config parameter is an optional
7698 hash reference of names and values to save, which defaults to the global
7699 %config hash. The modulename parameter is the module to update the config
7700 file, which defaults to the current module.
7703 sub save_module_config
7705 my $c = $_[0] || { &get_module_variable('%config') };
7706 my $m = defined($_[1]) ? $_[1] : &get_module_name();
7707 &write_file("$config_directory/$m/config", $c);
7710 =head2 save_user_module_config([&config], [modulename])
7712 Saves the user's Usermin preferences for some module. The config parameter is
7713 an optional hash reference of names and values to save, which defaults to the
7714 global %userconfig hash. The modulename parameter is the module to update the
7715 config file, which defaults to the current module.
7718 sub save_user_module_config
7720 my $c = $_[0] || { &get_module_variable('%userconfig') };
7721 my $m = $_[1] || &get_module_name();
7722 my $ucd = $user_config_directory;
7724 my @uinfo = @remote_user_info ? @remote_user_info
7725 : getpwnam($remote_user);
7726 return if (!@uinfo || !$uinfo[7]);
7727 $ucd = "$uinfo[7]/$gconfig{'userconfig'}";
7729 &write_file("$ucd/$m/config", $c);
7732 =head2 nice_size(bytes, [min])
7734 Converts a number of bytes into a number followed by a suffix like GB, MB
7735 or kB. Rounding is to two decimal digits. The optional min parameter sets the
7736 smallest units to use - so you could pass 1024*1024 to never show bytes or kB.
7741 my ($units, $uname);
7742 if (abs($_[0]) > 1024*1024*1024*1024 || $_[1] >= 1024*1024*1024*1024) {
7743 $units = 1024*1024*1024*1024;
7746 elsif (abs($_[0]) > 1024*1024*1024 || $_[1] >= 1024*1024*1024) {
7747 $units = 1024*1024*1024;
7750 elsif (abs($_[0]) > 1024*1024 || $_[1] >= 1024*1024) {
7754 elsif (abs($_[0]) > 1024 || $_[1] >= 1024) {
7762 my $sz = sprintf("%.2f", ($_[0]*1.0 / $units));
7764 return $sz." ".$uname;
7767 =head2 get_perl_path
7769 Returns the path to Perl currently in use, such as /usr/bin/perl.
7774 if (open(PERL, "$config_directory/perl-path")) {
7780 return $^X if (-x $^X);
7781 return &has_command("perl");
7784 =head2 get_goto_module([&mods])
7786 Returns the details of a module that the current user should be re-directed
7787 to after logging in, or undef if none. Useful for themes.
7792 my @mods = $_[0] ? @{$_[0]} : &get_visible_module_infos();
7793 if ($gconfig{'gotomodule'}) {
7794 my ($goto) = grep { $_->{'dir'} eq $gconfig{'gotomodule'} } @mods;
7795 return $goto if ($goto);
7797 if (@mods == 1 && $gconfig{'gotoone'}) {
7803 =head2 select_all_link(field, form, [text])
7805 Returns HTML for a 'Select all' link that uses Javascript to select
7806 multiple checkboxes with the same name. The parameters are :
7808 =item field - Name of the checkbox inputs.
7810 =item form - Index of the form on the page.
7812 =item text - Message for the link, defaulting to 'Select all'.
7817 return &theme_select_all_link(@_) if (defined(&theme_select_all_link));
7818 my ($field, $form, $text) = @_;
7820 $text ||= $text{'ui_selall'};
7821 return "<a class='select_all' href='#' onClick='var ff = document.forms[$form].$field; ff.checked = true; for(i=0; i<ff.length; i++) { if (!ff[i].disabled) { ff[i].checked = true; } } return false'>$text</a>";
7824 =head2 select_invert_link(field, form, text)
7826 Returns HTML for an 'Invert selection' link that uses Javascript to invert the
7827 selection on multiple checkboxes with the same name. The parameters are :
7829 =item field - Name of the checkbox inputs.
7831 =item form - Index of the form on the page.
7833 =item text - Message for the link, defaulting to 'Invert selection'.
7836 sub select_invert_link
7838 return &theme_select_invert_link(@_) if (defined(&theme_select_invert_link));
7839 my ($field, $form, $text) = @_;
7841 $text ||= $text{'ui_selinv'};
7842 return "<a class='select_invert' href='#' onClick='var ff = document.forms[$form].$field; ff.checked = !ff.checked; for(i=0; i<ff.length; i++) { if (!ff[i].disabled) { ff[i].checked = !ff[i].checked; } } return false'>$text</a>";
7845 =head2 select_rows_link(field, form, text, &rows)
7847 Returns HTML for a link that uses Javascript to select rows with particular
7848 values for their checkboxes. The parameters are :
7850 =item field - Name of the checkbox inputs.
7852 =item form - Index of the form on the page.
7854 =item text - Message for the link, de
7856 =item rows - Reference to an array of 1 or 0 values, indicating which rows to check.
7859 sub select_rows_link
7861 return &theme_select_rows_link(@_) if (defined(&theme_select_rows_link));
7862 my ($field, $form, $text, $rows) = @_;
7864 my $js = "var sel = { ".join(",", map { "\""."e_escape($_)."\":1" } @$rows)." }; ";
7865 $js .= "for(var i=0; i<document.forms[$form].${field}.length; i++) { var r = document.forms[$form].${field}[i]; r.checked = sel[r.value]; } ";
7866 $js .= "return false;";
7867 return "<a href='#' onClick='$js'>$text</a>";
7870 =head2 check_pid_file(file)
7872 Given a pid file, returns the PID it contains if the process is running.
7877 open(PIDFILE, $_[0]) || return undef;
7878 my $pid = <PIDFILE>;
7880 $pid =~ /^\s*(\d+)/ || return undef;
7881 kill(0, $1) || return undef;
7887 Return the local os-specific library name to this module. For internal use only.
7892 my $mn = &get_module_name();
7893 my $md = &module_root_directory($mn);
7894 if (-r "$md/$mn-$gconfig{'os_type'}-$gconfig{'os_version'}-lib.pl") {
7895 return "$mn-$gconfig{'os_type'}-$gconfig{'os_version'}-lib.pl";
7897 elsif (-r "$md/$mn-$gconfig{'os_type'}-lib.pl") {
7898 return "$mn-$gconfig{'os_type'}-lib.pl";
7900 elsif (-r "$md/$mn-generic-lib.pl") {
7901 return "$mn-generic-lib.pl";
7908 =head2 module_root_directory(module)
7910 Given a module name, returns its root directory. On a typical Webmin install,
7911 all modules are under the same directory - but it is theoretically possible to
7915 sub module_root_directory
7917 my $d = ref($_[0]) ? $_[0]->{'dir'} : $_[0];
7918 if (@root_directories > 1) {
7919 foreach my $r (@root_directories) {
7925 return "$root_directories[0]/$d";
7928 =head2 list_mime_types
7930 Returns a list of all known MIME types and their extensions, as a list of hash
7931 references with keys :
7933 =item type - The MIME type, like text/plain.
7935 =item exts - A list of extensions, like .doc and .avi.
7937 =item desc - A human-readable description for the MIME type.
7942 if (!@list_mime_types_cache) {
7944 open(MIME, "$root_directory/mime.types");
7948 if (s/#\s*(.*)$//g) {
7951 my ($type, @exts) = split(/\s+/);
7953 push(@list_mime_types_cache, { 'type' => $type,
7960 return @list_mime_types_cache;
7963 =head2 guess_mime_type(filename, [default])
7965 Given a file name like xxx.gif or foo.html, returns a guessed MIME type.
7966 The optional default parameter sets a default type of use if none is found,
7967 which defaults to application/octet-stream.
7972 if ($_[0] =~ /\.([A-Za-z0-9\-]+)$/) {
7974 foreach my $t (&list_mime_types()) {
7975 foreach my $e (@{$t->{'exts'}}) {
7976 return $t->{'type'} if (lc($e) eq lc($ext));
7980 return @_ > 1 ? $_[1] : "application/octet-stream";
7983 =head2 open_tempfile([handle], file, [no-error], [no-tempfile], [safe?])
7985 Opens a file handle for writing to a temporary file, which will only be
7986 renamed over the real file when the handle is closed. This allows critical
7987 files like /etc/shadow to be updated safely, even if writing fails part way
7988 through due to lack of disk space. The parameters are :
7990 =item handle - File handle to open, as you would use in Perl's open function.
7992 =item file - Full path to the file to write, prefixed by > or >> to indicate over-writing or appending. In append mode, no temp file is used.
7994 =item no-error - By default, this function will call error if the open fails. Setting this parameter to 1 causes it to return 0 on failure, and set $! with the error code.
7996 =item no-tempfile - If set to 1, writing will be direct to the file instead of using a temporary file.
7998 =item safe - Indicates to users in read-only mode that this write is safe and non-destructive.
8004 # Just getting a temp file
8005 if (!defined($main::open_tempfiles{$_[0]})) {
8006 $_[0] =~ /^(.*)\/(.*)$/ || return $_[0];
8007 my $dir = $1 || "/";
8008 my $tmp = "$dir/$2.webmintmp.$$";
8009 $main::open_tempfiles{$_[0]} = $tmp;
8010 push(@main::temporary_files, $tmp);
8012 return $main::open_tempfiles{$_[0]};
8016 my ($fh, $file, $noerror, $notemp, $safe) = @_;
8017 $fh = &callers_package($fh);
8019 my %gaccess = &get_module_acl(undef, "");
8020 my $db = $gconfig{'debug_what_write'};
8021 if ($file =~ /\r|\n|\0/) {
8022 if ($noerror) { return 0; }
8023 else { &error("Filename contains invalid characters"); }
8025 if (&is_readonly_mode() && $file =~ />/ && !$safe) {
8026 # Read-only mode .. veto all writes
8027 print STDERR "vetoing write to $file\n";
8028 return open($fh, ">$null_file");
8030 elsif ($file =~ /^(>|>>|)nul$/i) {
8031 # Write to Windows null device
8032 &webmin_debug_log($1 eq ">" ? "WRITE" :
8033 $1 eq ">>" ? "APPEND" : "READ", "nul") if ($db);
8035 elsif ($file =~ /^(>|>>)(\/dev\/.*)/ || lc($file) eq "nul") {
8036 # Writes to /dev/null or TTYs don't need to be handled
8037 &webmin_debug_log($1 eq ">" ? "WRITE" : "APPEND", $2) if ($db);
8038 return open($fh, $file);
8040 elsif ($file =~ /^>\s*(([a-zA-Z]:)?\/.*)$/ && !$notemp) {
8041 &webmin_debug_log("WRITE", $1) if ($db);
8042 # Over-writing a file, via a temp file
8044 $file = &translate_filename($file);
8046 # Open the link target instead
8047 $file = &resolve_links($file);
8050 # Cannot open a directory!
8051 if ($noerror) { return 0; }
8052 else { &error("Cannot write to directory $file"); }
8054 my $tmp = &open_tempfile($file);
8055 my $ex = open($fh, ">$tmp");
8056 if (!$ex && $! =~ /permission/i) {
8057 # Could not open temp file .. try opening actual file
8059 $ex = open($fh, ">$file");
8060 delete($main::open_tempfiles{$file});
8063 $main::open_temphandles{$fh} = $file;
8066 if (!$ex && !$noerror) {
8067 &error(&text("efileopen", $file, $!));
8071 elsif ($file =~ /^>\s*(([a-zA-Z]:)?\/.*)$/ && $notemp) {
8072 # Just writing direct to a file
8073 &webmin_debug_log("WRITE", $1) if ($db);
8075 $file = &translate_filename($file);
8076 my @old_attributes = &get_clear_file_attributes($file);
8077 my $ex = open($fh, ">$file");
8078 &reset_file_attributes($file, \@old_attributes);
8079 $main::open_temphandles{$fh} = $file;
8080 if (!$ex && !$noerror) {
8081 &error(&text("efileopen", $file, $!));
8086 elsif ($file =~ /^>>\s*(([a-zA-Z]:)?\/.*)$/) {
8087 # Appending to a file .. nothing special to do
8088 &webmin_debug_log("APPEND", $1) if ($db);
8090 $file = &translate_filename($file);
8091 my @old_attributes = &get_clear_file_attributes($file);
8092 my $ex = open($fh, ">>$file");
8093 &reset_file_attributes($file, \@old_attributes);
8094 $main::open_temphandles{$fh} = $file;
8095 if (!$ex && !$noerror) {
8096 &error(&text("efileopen", $file, $!));
8101 elsif ($file =~ /^([a-zA-Z]:)?\//) {
8102 # Read mode .. nothing to do here
8103 &webmin_debug_log("READ", $file) if ($db);
8104 $file = &translate_filename($file);
8105 return open($fh, $file);
8107 elsif ($file eq ">" || $file eq ">>") {
8108 my ($package, $filename, $line) = caller;
8109 if ($noerror) { return 0; }
8110 else { &error("Missing file to open at ${package}::${filename} line $line"); }
8113 my ($package, $filename, $line) = caller;
8114 &error("Unsupported file or mode $file at ${package}::${filename} line $line");
8119 =head2 close_tempfile(file|handle)
8121 Copies a temp file to the actual file, assuming that all writes were
8122 successful. The handle must have been one passed to open_tempfile.
8128 my $fh = &callers_package($_[0]);
8130 if (defined($file = $main::open_temphandles{$fh})) {
8132 close($fh) || &error(&text("efileclose", $file, $!));
8133 delete($main::open_temphandles{$fh});
8134 return &close_tempfile($file);
8136 elsif (defined($main::open_tempfiles{$_[0]})) {
8138 &webmin_debug_log("CLOSE", $_[0]) if ($gconfig{'debug_what_write'});
8139 my @st = stat($_[0]);
8140 if (&is_selinux_enabled() && &has_command("chcon")) {
8141 # Set original security context
8142 system("chcon --reference=".quotemeta($_[0]).
8143 " ".quotemeta($main::open_tempfiles{$_[0]}).
8144 " >/dev/null 2>&1");
8146 my @old_attributes = &get_clear_file_attributes($_[0]);
8147 rename($main::open_tempfiles{$_[0]}, $_[0]) || &error("Failed to replace $_[0] with $main::open_tempfiles{$_[0]} : $!");
8149 # Set original permissions and ownership
8150 chmod($st[2], $_[0]);
8151 chown($st[4], $st[5], $_[0]);
8153 &reset_file_attributes($_[0], \@old_attributes);
8154 delete($main::open_tempfiles{$_[0]});
8155 @main::temporary_files = grep { $_ ne $main::open_tempfiles{$_[0]} } @main::temporary_files;
8156 if ($main::open_templocks{$_[0]}) {
8157 &unlock_file($_[0]);
8158 delete($main::open_templocks{$_[0]});
8163 # Must be closing a handle not associated with a file
8169 =head2 print_tempfile(handle, text, ...)
8171 Like the normal print function, but calls &error on failure. Useful when
8172 combined with open_tempfile, to ensure that a criticial file is never
8173 only partially written.
8178 my ($fh, @args) = @_;
8179 $fh = &callers_package($fh);
8180 (print $fh @args) || &error(&text("efilewrite",
8181 $main::open_temphandles{$fh} || $fh, $!));
8184 =head2 is_selinux_enabled
8186 Returns 1 if SElinux is supported on this system and enabled, 0 if not.
8189 sub is_selinux_enabled
8191 if (!defined($main::selinux_enabled_cache)) {
8193 if ($gconfig{'os_type'} !~ /-linux$/) {
8194 # Not on linux, so no way
8195 $main::selinux_enabled_cache = 0;
8197 elsif (&read_env_file("/etc/selinux/config", \%seconfig)) {
8198 # Use global config file
8199 $main::selinux_enabled_cache =
8200 $seconfig{'SELINUX'} eq 'disabled' ||
8201 !$seconfig{'SELINUX'} ? 0 : 1;
8204 # Use selinuxenabled command
8205 #$selinux_enabled_cache =
8206 # system("selinuxenabled >/dev/null 2>&1") ? 0 : 1;
8207 $main::selinux_enabled_cache = 0;
8210 return $main::selinux_enabled_cache;
8213 =head2 get_clear_file_attributes(file)
8215 Finds file attributes that may prevent writing, clears them and returns them
8216 as a list. May call error. Mainly for internal use by open_tempfile and
8220 sub get_clear_file_attributes
8224 if ($gconfig{'chattr'}) {
8225 # Get original immutable bit
8226 my $out = &backquote_command(
8227 "lsattr ".quotemeta($file)." 2>/dev/null");
8229 $out =~ s/\s\S+\n//;
8230 @old_attributes = grep { $_ ne '-' } split(//, $out);
8232 if (&indexof("i", @old_attributes) >= 0) {
8233 my $err = &backquote_logged(
8234 "chattr -i ".quotemeta($file)." 2>&1");
8236 &error("Failed to remove immutable bit on ".
8241 return @old_attributes;
8244 =head2 reset_file_attributes(file, &attributes)
8246 Put back cleared attributes on some file. May call error. Mainly for internal
8247 use by close_tempfile.
8250 sub reset_file_attributes
8252 my ($file, $old_attributes) = @_;
8253 if (&indexof("i", @$old_attributes) >= 0) {
8254 my $err = &backquote_logged(
8255 "chattr +i ".quotemeta($file)." 2>&1");
8257 &error("Failed to restore immutable bit on ".
8263 =head2 cleanup_tempnames
8265 Remove all temporary files generated using transname. Typically only called
8266 internally when a Webmin script exits.
8269 sub cleanup_tempnames
8271 foreach my $t (@main::temporary_files) {
8274 @main::temporary_files = ( );
8277 =head2 open_lock_tempfile([handle], file, [no-error])
8279 Returns a temporary file for writing to some actual file, and also locks it.
8280 Effectively the same as calling lock_file and open_tempfile on the same file,
8281 but calls the unlock for you automatically when it is closed.
8284 sub open_lock_tempfile
8286 my ($fh, $file, $noerror, $notemp, $safe) = @_;
8287 $fh = &callers_package($fh);
8288 my $lockfile = $file;
8289 $lockfile =~ s/^[^\/]*//;
8290 if ($lockfile =~ /^\//) {
8291 $main::open_templocks{$lockfile} = &lock_file($lockfile);
8293 return &open_tempfile($fh, $file, $noerror, $notemp, $safe);
8298 $main::end_exit_status ||= $?;
8299 if ($$ == $main::initial_process_id) {
8300 # Exiting from initial process
8301 &cleanup_tempnames();
8302 if ($gconfig{'debug_what_start'} && $main::debug_log_start_time &&
8303 $main::debug_log_start_module eq &get_module_name()) {
8304 my $len = time() - $main::debug_log_start_time;
8305 &webmin_debug_log("STOP", "runtime=$len");
8306 $main::debug_log_start_time = 0;
8308 if (!$ENV{'SCRIPT_NAME'} &&
8309 $main::initial_module_name eq &get_module_name()) {
8310 # In a command-line script - call the real exit, so that the
8311 # exit status gets properly propogated. In some cases this
8312 # was not happening.
8313 exit($main::end_exit_status);
8318 =head2 month_to_number(month)
8320 Converts a month name like feb to a number like 1.
8325 return $month_to_number_map{lc(substr($_[0], 0, 3))};
8328 =head2 number_to_month(number)
8330 Converts a number like 1 to a month name like Feb.
8335 return ucfirst($number_to_month_map{$_[0]});
8338 =head2 get_rbac_module_acl(user, module)
8340 Returns a hash reference of RBAC overrides ACLs for some user and module.
8341 May return undef if none exist (indicating access denied), or the string *
8342 if full access is granted.
8345 sub get_rbac_module_acl
8347 my ($user, $mod) = @_;
8348 eval "use Authen::SolarisRBAC";
8349 return undef if ($@);
8352 if (Authen::SolarisRBAC::chkauth("webmin.$mod.admin", $user)) {
8353 # Automagic webmin.modulename.admin authorization exists .. allow access
8355 if (!Authen::SolarisRBAC::chkauth("webmin.$mod.config", $user)) {
8356 %rv = ( 'noconfig' => 1 );
8363 open(RBAC, &module_root_directory($mod)."/rbac-mapping");
8367 my ($auths, $acls) = split(/\s+/, $_);
8368 my @auths = split(/,/, $auths);
8370 my ($merge) = ($acls =~ s/^\+//);
8372 if ($auths eq "*") {
8373 # These ACLs apply to all RBAC users.
8374 # Only if there is some that match a specific authorization
8375 # later will they be used though.
8378 # Check each of the RBAC authorizations
8379 foreach my $a (@auths) {
8380 if (!Authen::SolarisRBAC::chkauth($a, $user)) {
8385 $foundany++ if ($gotall);
8388 # Found an RBAC authorization - return the ACLs
8389 return "*" if ($acls eq "*");
8390 my %acl = map { split(/=/, $_, 2) } split(/,/, $acls);
8392 # Just add to current set
8393 foreach my $a (keys %acl) {
8404 return !$foundany ? undef : %rv ? \%rv : undef;
8407 =head2 supports_rbac([module])
8409 Returns 1 if RBAC client support is available, such as on Solaris.
8414 return 0 if ($gconfig{'os_type'} ne 'solaris');
8415 eval "use Authen::SolarisRBAC";
8418 #return 0 if (!-r &module_root_directory($_[0])."/rbac-mapping");
8423 =head2 supports_ipv6()
8425 Returns 1 if outgoing IPv6 connections can be made
8430 return $ipv6_module_error ? 0 : 1;
8433 =head2 use_rbac_module_acl(user, module)
8435 Returns 1 if some user should use RBAC to get permissions for a module
8438 sub use_rbac_module_acl
8440 my $u = defined($_[0]) ? $_[0] : $base_remote_user;
8441 my $m = defined($_[1]) ? $_[1] : &get_module_name();
8442 return 1 if ($gconfig{'rbacdeny_'.$u}); # RBAC forced for user
8443 my %access = &get_module_acl($u, $m, 1);
8444 return $access{'rbac'} ? 1 : 0;
8447 =head2 execute_command(command, stdin, stdout, stderr, translate-files?, safe?)
8449 Runs some command, possibly feeding it input and capturing output to the
8450 give files or scalar references. The parameters are :
8452 =item command - Full command to run, possibly including shell meta-characters.
8454 =item stdin - File to read input from, or a scalar ref containing input, or undef if no input should be given.
8456 =item stdout - File to write output to, or a scalar ref into which output should be placed, or undef if the output is to be discarded.
8458 =item stderr - File to write error output to, or a scalar ref into which error output should be placed, or undef if the error output is to be discarded.
8460 =item translate-files - Set to 1 to apply filename translation to any filenames. Usually has no effect.
8462 =item safe - Set to 1 if this command is safe and does not modify the state of the system.
8467 my ($cmd, $stdin, $stdout, $stderr, $trans, $safe) = @_;
8468 if (&is_readonly_mode() && !$safe) {
8469 print STDERR "Vetoing command $_[0]\n";
8473 $cmd = &translate_command($cmd);
8475 # Use ` operator where possible
8476 &webmin_debug_log('CMD', "cmd=$cmd") if ($gconfig{'debug_what_cmd'});
8477 if (!$stdin && ref($stdout) && !$stderr) {
8478 $cmd = "($cmd)" if ($gconfig{'os_type'} ne 'windows');
8479 $$stdout = `$cmd 2>$null_file`;
8482 elsif (!$stdin && ref($stdout) && $stdout eq $stderr) {
8483 $cmd = "($cmd)" if ($gconfig{'os_type'} ne 'windows');
8484 $$stdout = `$cmd 2>&1`;
8487 elsif (!$stdin && !$stdout && !$stderr) {
8488 $cmd = "($cmd)" if ($gconfig{'os_type'} ne 'windows');
8489 return system("$cmd >$null_file 2>$null_file <$null_file");
8493 $| = 1; # needed on some systems to flush before forking
8494 pipe(EXECSTDINr, EXECSTDINw);
8495 pipe(EXECSTDOUTr, EXECSTDOUTw);
8496 pipe(EXECSTDERRr, EXECSTDERRw);
8498 if (!($pid = fork())) {
8502 open(STDIN, "<&EXECSTDINr");
8503 open(STDOUT, ">&EXECSTDOUTw");
8504 if (ref($stderr) && $stderr eq $stdout) {
8505 open(STDERR, ">&EXECSTDOUTw");
8508 open(STDERR, ">&EXECSTDERRw");
8515 my $fullcmd = "($cmd)";
8516 if ($stdin && !ref($stdin)) {
8517 $fullcmd .= " <$stdin";
8519 if ($stdout && !ref($stdout)) {
8520 $fullcmd .= " >$stdout";
8522 if ($stderr && !ref($stderr)) {
8523 if ($stderr eq $stdout) {
8524 $fullcmd .= " 2>&1";
8527 $fullcmd .= " 2>$stderr";
8530 if ($gconfig{'os_type'} eq 'windows') {
8534 exec("/bin/sh", "-c", $fullcmd);
8536 print "Exec failed : $!\n";
8543 # Feed input and capture output
8545 if ($stdin && ref($stdin)) {
8546 print EXECSTDINw $$stdin;
8549 if ($stdout && ref($stdout)) {
8551 while(<EXECSTDOUTr>) {
8556 if ($stderr && ref($stderr) && $stderr ne $stdout) {
8558 while(<EXECSTDERRr>) {
8569 =head2 open_readfile(handle, file)
8571 Opens some file for reading. Returns 1 on success, 0 on failure. Pretty much
8572 exactly the same as Perl's open function.
8577 my ($fh, $file) = @_;
8578 $fh = &callers_package($fh);
8579 my $realfile = &translate_filename($file);
8580 &webmin_debug_log('READ', $file) if ($gconfig{'debug_what_read'});
8581 return open($fh, "<".$realfile);
8584 =head2 open_execute_command(handle, command, output?, safe?)
8586 Runs some command, with the specified file handle set to either write to it if
8587 in-or-out is set to 0, or read to it if output is set to 1. The safe flag
8588 indicates if the command modifies the state of the system or not.
8591 sub open_execute_command
8593 my ($fh, $cmd, $mode, $safe) = @_;
8594 $fh = &callers_package($fh);
8595 my $realcmd = &translate_command($cmd);
8596 if (&is_readonly_mode() && !$safe) {
8597 # Don't actually run it
8598 print STDERR "vetoing command $cmd\n";
8601 return open($fh, ">$null_file");
8604 return open($fh, $null_file);
8608 &webmin_debug_log('CMD', "cmd=$realcmd mode=$mode")
8609 if ($gconfig{'debug_what_cmd'});
8611 return open($fh, "| $cmd");
8613 elsif ($mode == 1) {
8614 return open($fh, "$cmd 2>$null_file |");
8616 elsif ($mode == 2) {
8617 return open($fh, "$cmd 2>&1 |");
8621 =head2 translate_filename(filename)
8623 Applies all relevant registered translation functions to a filename. Mostly
8624 for internal use, and typically does nothing.
8627 sub translate_filename
8629 my ($realfile) = @_;
8630 my @funcs = grep { $_->[0] eq &get_module_name() ||
8631 !defined($_->[0]) } @main::filename_callbacks;
8632 foreach my $f (@funcs) {
8634 $realfile = &$func($realfile, @{$f->[2]});
8639 =head2 translate_command(filename)
8641 Applies all relevant registered translation functions to a command. Mostly
8642 for internal use, and typically does nothing.
8645 sub translate_command
8648 my @funcs = grep { $_->[0] eq &get_module_name() ||
8649 !defined($_->[0]) } @main::command_callbacks;
8650 foreach my $f (@funcs) {
8652 $realcmd = &$func($realcmd, @{$f->[2]});
8657 =head2 register_filename_callback(module|undef, &function, &args)
8659 Registers some function to be called when the specified module (or all
8660 modules) tries to open a file for reading and writing. The function must
8661 return the actual file to open. This allows you to override which files
8662 other code actually operates on, via the translate_filename function.
8665 sub register_filename_callback
8667 my ($mod, $func, $args) = @_;
8668 push(@main::filename_callbacks, [ $mod, $func, $args ]);
8671 =head2 register_command_callback(module|undef, &function, &args)
8673 Registers some function to be called when the specified module (or all
8674 modules) tries to execute a command. The function must return the actual
8675 command to run. This allows you to override which commands other other code
8676 actually runs, via the translate_command function.
8679 sub register_command_callback
8681 my ($mod, $func, $args) = @_;
8682 push(@main::command_callbacks, [ $mod, $func, $args ]);
8685 =head2 capture_function_output(&function, arg, ...)
8687 Captures output that some function prints to STDOUT, and returns it. Useful
8688 for functions outside your control that print data when you really want to
8689 manipulate it before output.
8692 sub capture_function_output
8694 my ($func, @args) = @_;
8695 socketpair(SOCKET2, SOCKET1, AF_UNIX, SOCK_STREAM, PF_UNSPEC);
8696 my $old = select(SOCKET1);
8697 my @rv = &$func(@args);
8706 return wantarray ? ($out, \@rv) : $out;
8709 =head2 capture_function_output_tempfile(&function, arg, ...)
8711 Behaves the same as capture_function_output, but uses a temporary file
8712 to avoid buffer full problems.
8715 sub capture_function_output_tempfile
8717 my ($func, @args) = @_;
8718 my $temp = &transname();
8719 open(BUFFER, ">$temp");
8720 my $old = select(BUFFER);
8721 my @rv = &$func(@args);
8724 my $out = &read_file_contents($temp);
8725 &unlink_file($temp);
8726 return wantarray ? ($out, \@rv) : $out;
8729 =head2 modules_chooser_button(field, multiple, [form])
8731 Returns HTML for a button for selecting one or many Webmin modules.
8732 field - Name of the HTML field to place the module names into.
8733 multiple - Set to 1 if multiple modules can be selected.
8734 form - Index of the form on the page.
8737 sub modules_chooser_button
8739 return &theme_modules_chooser_button(@_)
8740 if (defined(&theme_modules_chooser_button));
8741 my $form = defined($_[2]) ? $_[2] : 0;
8742 my $w = $_[1] ? 700 : 500;
8744 if ($_[1] && $gconfig{'db_sizemodules'}) {
8745 ($w, $h) = split(/x/, $gconfig{'db_sizemodules'});
8747 elsif (!$_[1] && $gconfig{'db_sizemodule'}) {
8748 ($w, $h) = split(/x/, $gconfig{'db_sizemodule'});
8750 return "<input type=button onClick='ifield = document.forms[$form].$_[0]; chooser = window.open(\"$gconfig{'webprefix'}/module_chooser.cgi?multi=$_[1]&module=\"+escape(ifield.value), \"chooser\", \"toolbar=no,menubar=no,scrollbars=yes,width=$w,height=$h\"); chooser.ifield = ifield; window.ifield = ifield' value=\"...\">\n";
8753 =head2 substitute_template(text, &hash)
8755 Given some text and a hash reference, for each ocurrance of $FOO or ${FOO} in
8756 the text replaces it with the value of the hash key foo. Also supports blocks
8757 like ${IF-FOO} ... ${ENDIF-FOO}, whose contents are only included if foo is
8758 non-zero, and ${IF-FOO} ... ${ELSE-FOO} ... ${ENDIF-FOO}.
8761 sub substitute_template
8763 # Add some extra fixed parameters to the hash
8764 my %hash = %{$_[1]};
8765 $hash{'hostname'} = &get_system_hostname();
8766 $hash{'webmin_config'} = $config_directory;
8767 $hash{'webmin_etc'} = $config_directory;
8768 $hash{'module_config'} = &get_module_variable('$module_config_directory');
8769 $hash{'webmin_var'} = $var_directory;
8771 # Add time-based parameters, for use in DNS
8772 $hash{'current_time'} = time();
8773 my @tm = localtime($hash{'current_time'});
8774 $hash{'current_year'} = $tm[5]+1900;
8775 $hash{'current_month'} = sprintf("%2.2d", $tm[4]+1);
8776 $hash{'current_day'} = sprintf("%2.2d", $tm[3]);
8777 $hash{'current_hour'} = sprintf("%2.2d", $tm[2]);
8778 $hash{'current_minute'} = sprintf("%2.2d", $tm[1]);
8779 $hash{'current_second'} = sprintf("%2.2d", $tm[0]);
8781 # Actually do the substition
8783 foreach my $s (keys %hash) {
8784 next if ($s eq ''); # Prevent just $ from being subbed
8787 $rv =~ s/\$\{\Q$us\E\}/$sv/g;
8788 $rv =~ s/\$\Q$us\E/$sv/g;
8790 # Replace ${IF}..${ELSE}..${ENDIF} block with first value,
8791 # and ${IF}..${ENDIF} with value
8792 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ELSE-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)/$2/g;
8793 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)/$2/g;
8795 # Replace $IF..$ELSE..$ENDIF block with first value,
8796 # and $IF..$ENDIF with value
8797 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ELSE-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)/$2/g;
8798 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)/$2/g;
8800 # Replace ${IFEQ}..${ENDIFEQ} block with first value if
8801 # matching, nothing if not
8802 $rv =~ s/\$\{IFEQ-\Q$us\E-\Q$sv\E\}(\n?)([\000-\377]*?)\$\{ENDIFEQ-\Q$us\E-\Q$sv\E\}(\n?)/$2/g;
8803 $rv =~ s/\$\{IFEQ-\Q$us\E-[^\}]+}(\n?)([\000-\377]*?)\$\{ENDIFEQ-\Q$us\E-[^\}]+\}(\n?)//g;
8805 # Replace $IFEQ..$ENDIFEQ block with first value if
8806 # matching, nothing if not
8807 $rv =~ s/\$IFEQ-\Q$us\E-\Q$sv\E(\n?)([\000-\377]*?)\$ENDIFEQ-\Q$us\E-\Q$sv\E(\n?)/$2/g;
8808 $rv =~ s/\$IFEQ-\Q$us\E-\S+(\n?)([\000-\377]*?)\$ENDIFEQ-\Q$us\E-\S+(\n?)//g;
8811 # Replace ${IF}..${ELSE}..${ENDIF} block with second value,
8812 # and ${IF}..${ENDIF} with nothing
8813 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ELSE-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)/$4/g;
8814 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)//g;
8816 # Replace $IF..$ELSE..$ENDIF block with second value,
8817 # and $IF..$ENDIF with nothing
8818 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ELSE-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)/$4/g;
8819 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)//g;
8821 # Replace ${IFEQ}..${ENDIFEQ} block with nothing
8822 $rv =~ s/\$\{IFEQ-\Q$us\E-[^\}]+}(\n?)([\000-\377]*?)\$\{ENDIFEQ-\Q$us\E-[^\}]+\}(\n?)//g;
8823 $rv =~ s/\$IFEQ-\Q$us\E-\S+(\n?)([\000-\377]*?)\$ENDIFEQ-\Q$us\E-\S+(\n?)//g;
8827 # Now assume any $IF blocks whose variables are not present in the hash
8828 # evaluate to false.
8829 # $IF...$ELSE x $ENDIF => x
8830 $rv =~ s/\$\{IF\-([A-Z]+)\}.*?\$\{ELSE\-\1\}(.*?)\$\{ENDIF\-\1\}/$2/gs;
8831 # $IF...x...$ENDIF => (nothing)
8832 $rv =~ s/\$\{IF\-([A-Z]+)\}.*?\$\{ENDIF\-\1\}//gs;
8833 # ${var} => (nothing)
8834 $rv =~ s/\$\{[A-Z]+\}//g;
8839 =head2 running_in_zone
8841 Returns 1 if the current Webmin instance is running in a Solaris zone. Used to
8842 disable module and features that are not appropriate, like those that modify
8843 mounted filesystems.
8848 return 0 if ($gconfig{'os_type'} ne 'solaris' ||
8849 $gconfig{'os_version'} < 10);
8850 my $zn = `zonename 2>$null_file`;
8852 return $zn && $zn ne "global";
8855 =head2 running_in_vserver
8857 Returns 1 if the current Webmin instance is running in a Linux VServer.
8858 Used to disable modules and features that are not appropriate.
8861 sub running_in_vserver
8863 return 0 if ($gconfig{'os_type'} !~ /^\*-linux$/);
8866 open(MTAB, "/etc/mtab");
8868 my ($dev, $mp) = split(/\s+/, $_);
8869 if ($mp eq "/" && $dev =~ /^\/dev\/hdv/) {
8878 =head2 running_in_xen
8880 Returns 1 if Webmin is running inside a Xen instance, by looking
8881 at /proc/xen/capabilities.
8886 return 0 if (!-r "/proc/xen/capabilities");
8887 my $cap = &read_file_contents("/proc/xen/capabilities");
8888 return $cap =~ /control_d/ ? 0 : 1;
8891 =head2 running_in_openvz
8893 Returns 1 if Webmin is running inside an OpenVZ container, by looking
8894 at /proc/vz/veinfo for a non-zero line.
8897 sub running_in_openvz
8899 return 0 if (!-r "/proc/vz/veinfo");
8900 my $lref = &read_file_lines("/proc/vz/veinfo", 1);
8901 return 0 if (!$lref || !@$lref);
8902 foreach my $l (@$lref) {
8904 my @ll = split(/\s+/, $l);
8905 return 0 if ($ll[0] eq '0');
8910 =head2 list_categories(&modules, [include-empty])
8912 Returns a hash mapping category codes to names, including any custom-defined
8913 categories. The modules parameter must be an array ref of module hash objects,
8914 as returned by get_all_module_infos.
8919 my ($mods, $empty) = @_;
8920 my (%cats, %catnames);
8921 &read_file("$config_directory/webmin.catnames", \%catnames);
8922 foreach my $o (@lang_order_list) {
8923 &read_file("$config_directory/webmin.catnames.$o", \%catnames);
8928 foreach my $m (@$mods) {
8929 my $c = $m->{'category'};
8930 next if ($cats{$c});
8931 if (defined($catnames{$c})) {
8932 $cats{$c} = $catnames{$c};
8934 elsif ($text{"category_$c"}) {
8935 $cats{$c} = $text{"category_$c"};
8938 # try to get category name from module ..
8939 my %mtext = &load_language($m->{'dir'});
8940 if ($mtext{"category_$c"}) {
8941 $cats{$c} = $mtext{"category_$c"};
8944 $c = $m->{'category'} = "";
8945 $cats{$c} = $text{"category_$c"};
8952 =head2 is_readonly_mode
8954 Returns 1 if the current user is in read-only mode, and thus all writes
8955 to files and command execution should fail.
8958 sub is_readonly_mode
8960 if (!defined($main::readonly_mode_cache)) {
8961 my %gaccess = &get_module_acl(undef, "");
8962 $main::readonly_mode_cache = $gaccess{'readonly'} ? 1 : 0;
8964 return $main::readonly_mode_cache;
8967 =head2 command_as_user(user, with-env?, command, ...)
8969 Returns a command to execute some command as the given user, using the
8970 su statement. If on Linux, the /bin/sh shell is forced in case the user
8971 does not have a valid shell. If with-env is set to 1, the -s flag is added
8972 to the su command to read the user's .profile or .bashrc file.
8977 my ($user, $env, @args) = @_;
8978 my @uinfo = getpwnam($user);
8979 if ($uinfo[8] ne "/bin/sh" && $uinfo[8] !~ /\/bash$/) {
8980 # User shell doesn't appear to be valid
8981 if ($gconfig{'os_type'} =~ /-linux$/) {
8982 # Use -s /bin/sh to force it
8983 $shellarg = " -s /bin/sh";
8985 elsif ($gconfig{'os_type'} eq 'freebsd' ||
8986 $gconfig{'os_type'} eq 'solaris' &&
8987 $gconfig{'os_version'} >= 11 ||
8988 $gconfig{'os_type'} eq 'macos') {
8989 # Use -m and force /bin/sh
8990 @args = ( "/bin/sh", "-c", quotemeta(join(" ", @args)) );
8994 my $rv = "su".($env ? " -" : "").$shellarg.
8995 " ".quotemeta($user)." -c ".quotemeta(join(" ", @args));
8999 =head2 list_osdn_mirrors(project, file)
9001 This function is now deprecated in favor of letting sourceforge just
9002 redirect to the best mirror, and now just returns their primary download URL.
9005 sub list_osdn_mirrors
9007 my ($project, $file) = @_;
9008 return ( { 'url' => "http://downloads.sourceforge.net/$project/$file",
9010 'mirror' => 'downloads' } );
9013 =head2 convert_osdn_url(url)
9015 Given a URL like http://osdn.dl.sourceforge.net/sourceforge/project/file.zip
9016 or http://prdownloads.sourceforge.net/project/file.zip , convert it
9017 to a real URL on the sourceforge download redirector.
9020 sub convert_osdn_url
9023 if ($url =~ /^http:\/\/[^\.]+.dl.sourceforge.net\/sourceforge\/([^\/]+)\/(.*)$/ ||
9024 $url =~ /^http:\/\/prdownloads.sourceforge.net\/([^\/]+)\/(.*)$/) {
9025 # Always use the Sourceforge mail download URL, which does
9026 # a location-based redirect for us
9027 my ($project, $file) = ($1, $2);
9028 $url = "http://prdownloads.sourceforge.net/sourceforge/".
9030 return wantarray ? ( $url, 0 ) : $url;
9033 # Some other source .. don't change
9034 return wantarray ? ( $url, 2 ) : $url;
9038 =head2 get_current_dir
9040 Returns the directory the current process is running in.
9046 if ($gconfig{'os_type'} eq 'windows') {
9059 =head2 supports_users
9061 Returns 1 if the current OS supports Unix user concepts and functions like
9062 su , getpw* and so on. This will be true on Linux and other Unixes, but false
9068 return $gconfig{'os_type'} ne 'windows';
9071 =head2 supports_symlinks
9073 Returns 1 if the current OS supports symbolic and hard links. This will not
9074 be the case on Windows.
9077 sub supports_symlinks
9079 return $gconfig{'os_type'} ne 'windows';
9082 =head2 quote_path(path)
9084 Returns a path with safe quoting for the current operating system.
9090 if ($gconfig{'os_type'} eq 'windows' || $path =~ /^[a-z]:/i) {
9091 # Windows only supports "" style quoting
9095 return quotemeta($path);
9099 =head2 get_windows_root
9101 Returns the base windows system directory, like c:/windows.
9104 sub get_windows_root
9106 if ($ENV{'SystemRoot'}) {
9107 my $rv = $ENV{'SystemRoot'};
9112 return -d "c:/windows" ? "c:/windows" : "c:/winnt";
9116 =head2 read_file_contents(file)
9118 Given a filename, returns its complete contents as a string. Effectively
9119 the same as the Perl construct `cat file`.
9122 sub read_file_contents
9124 &open_readfile(FILE, $_[0]) || return undef;
9131 =head2 unix_crypt(password, salt)
9133 Performs Unix encryption on a password, using the built-in crypt function or
9134 the Crypt::UnixCrypt module if the former does not work. The salt parameter
9135 must be either an already-hashed password, or a two-character alpha-numeric
9141 my ($pass, $salt) = @_;
9142 return "" if ($salt !~ /^[a-zA-Z0-9\.\/]{2}/); # same as real crypt
9143 my $rv = eval "crypt(\$pass, \$salt)";
9145 return $rv if ($rv && !$@);
9146 eval "use Crypt::UnixCrypt";
9148 return Crypt::UnixCrypt::crypt($pass, $salt);
9151 &error("Failed to encrypt password : $err");
9155 =head2 split_quoted_string(string)
9157 Given a string like I<foo "bar baz" quux>, returns the array :
9161 sub split_quoted_string
9165 while($str =~ /^"([^"]*)"\s*([\000-\377]*)$/ ||
9166 $str =~ /^'([^']*)'\s*([\000-\377]*)$/ ||
9167 $str =~ /^(\S+)\s*([\000-\377]*)$/) {
9174 =head2 write_to_http_cache(url, file|&data)
9176 Updates the Webmin cache with the contents of the given file, possibly also
9177 clearing out old data. Mainly for internal use by http_download.
9180 sub write_to_http_cache
9182 my ($url, $file) = @_;
9183 return 0 if (!$gconfig{'cache_size'});
9185 # Don't cache downloads that look dynamic
9186 if ($url =~ /cgi-bin/ || $url =~ /\?/) {
9190 # Check if the current module should do caching
9191 if ($gconfig{'cache_mods'} =~ /^\!(.*)$/) {
9192 # Caching all except some modules
9193 my @mods = split(/\s+/, $1);
9194 return 0 if (&indexof(&get_module_name(), @mods) != -1);
9196 elsif ($gconfig{'cache_mods'}) {
9197 # Only caching some modules
9198 my @mods = split(/\s+/, $gconfig{'cache_mods'});
9199 return 0 if (&indexof(&get_module_name(), @mods) == -1);
9205 $size = length($$file);
9208 my @st = stat($file);
9212 if ($size > $gconfig{'cache_size'}) {
9213 # Bigger than the whole cache - so don't save it
9218 $cfile = "$main::http_cache_directory/$cfile";
9220 # See how much we have cached currently, clearing old files
9222 mkdir($main::http_cache_directory, 0700) if (!-d $main::http_cache_directory);
9223 opendir(CACHEDIR, $main::http_cache_directory);
9224 foreach my $f (readdir(CACHEDIR)) {
9225 next if ($f eq "." || $f eq "..");
9226 my $path = "$main::http_cache_directory/$f";
9227 my @st = stat($path);
9228 if ($gconfig{'cache_days'} &&
9229 time()-$st[9] > $gconfig{'cache_days'}*24*60*60) {
9230 # This file is too old .. trash it
9235 push(@cached, [ $path, $st[7], $st[9] ]);
9239 @cached = sort { $a->[2] <=> $b->[2] } @cached;
9240 while($total+$size > $gconfig{'cache_size'} && @cached) {
9241 # Cache is too big .. delete some files until the new one will fit
9242 unlink($cached[0]->[0]);
9243 $total -= $cached[0]->[1];
9247 # Finally, write out the new file
9249 &open_tempfile(CACHEFILE, ">$cfile");
9250 &print_tempfile(CACHEFILE, $$file);
9251 &close_tempfile(CACHEFILE);
9254 my ($ok, $err) = ©_source_dest($file, $cfile);
9260 =head2 check_in_http_cache(url)
9262 If some URL is in the cache and valid, return the filename for it. Mainly
9263 for internal use by http_download.
9266 sub check_in_http_cache
9269 return undef if (!$gconfig{'cache_size'});
9271 # Check if the current module should do caching
9272 if ($gconfig{'cache_mods'} =~ /^\!(.*)$/) {
9273 # Caching all except some modules
9274 my @mods = split(/\s+/, $1);
9275 return 0 if (&indexof(&get_module_name(), @mods) != -1);
9277 elsif ($gconfig{'cache_mods'}) {
9278 # Only caching some modules
9279 my @mods = split(/\s+/, $gconfig{'cache_mods'});
9280 return 0 if (&indexof(&get_module_name(), @mods) == -1);
9285 $cfile = "$main::http_cache_directory/$cfile";
9286 my @st = stat($cfile);
9287 return undef if (!@st || !$st[7]);
9288 if ($gconfig{'cache_days'} && time()-$st[9] > $gconfig{'cache_days'}*24*60*60) {
9293 open(TOUCH, ">>$cfile"); # Update the file time, to keep it in the cache
9298 =head2 supports_javascript
9300 Returns 1 if the current browser is assumed to support javascript.
9303 sub supports_javascript
9305 if (defined(&theme_supports_javascript)) {
9306 return &theme_supports_javascript();
9308 return $ENV{'MOBILE_DEVICE'} ? 0 : 1;
9311 =head2 get_module_name
9313 Returns the name of the Webmin module that called this function. For internal
9314 use only by other API functions.
9319 return &get_module_variable('$module_name');
9322 =head2 get_module_variable(name, [ref])
9324 Returns the value of some variable which is set in the caller's context, if
9325 using the new WebminCore package. For internal use only.
9328 sub get_module_variable
9330 my ($v, $wantref) = @_;
9331 my $slash = $wantref ? "\\" : "";
9332 my $thispkg = &web_libs_package();
9333 if ($thispkg eq 'WebminCore') {
9334 my ($vt, $vn) = split('', $v, 2);
9336 for(my $i=0; ($callpkg) = caller($i); $i++) {
9337 last if ($callpkg ne $thispkg);
9339 return eval "${slash}${vt}${callpkg}::${vn}";
9341 return eval "${slash}${v}";
9344 =head2 clear_time_locale()
9346 Temporarily force the locale to C, until reset_time_locale is called. This is
9347 useful if your code is going to call C<strftime> from the POSIX package, and
9348 you want to ensure that the output is in a consistent format.
9351 sub clear_time_locale
9353 if ($main::clear_time_locale_count == 0) {
9356 $main::clear_time_locale_old = POSIX::setlocale(POSIX::LC_TIME);
9357 POSIX::setlocale(POSIX::LC_TIME, "C");
9360 $main::clear_time_locale_count++;
9363 =head2 reset_time_locale()
9365 Revert the locale to whatever it was before clear_time_locale was called
9368 sub reset_time_locale
9370 if ($main::clear_time_locale_count == 1) {
9372 POSIX::setlocale(POSIX::LC_TIME, $main::clear_time_locale_old);
9373 $main::clear_time_locale_old = undef;
9376 $main::clear_time_locale_count--;
9379 =head2 callers_package(filehandle)
9381 Convert a non-module filehandle like FOO to one qualified with the
9382 caller's caller's package, like fsdump::FOO. For internal use only.
9388 my $callpkg = (caller(1))[0];
9389 my $thispkg = &web_libs_package();
9390 if (!ref($fh) && $fh !~ /::/ &&
9391 $callpkg ne $thispkg && $thispkg eq 'WebminCore') {
9392 $fh = $callpkg."::".$fh;
9397 =head2 web_libs_package()
9399 Returns the package this code is in. We can't always trust __PACKAGE__. For
9403 sub web_libs_package
9405 if ($called_from_webmin_core) {
9406 return "WebminCore";
9411 =head2 get_userdb_string
9413 Returns the URL-style string for connecting to the users and groups database
9416 sub get_userdb_string
9418 return undef if ($main::no_miniserv_userdb);
9420 &get_miniserv_config(\%miniserv);
9421 return $miniserv{'userdb'};
9424 =head2 connect_userdb(string)
9426 Returns a handle for talking to a user database - may be a DBI or LDAP handle.
9427 On failure returns an error message string. In an array context, returns the
9434 my ($proto, $user, $pass, $host, $prefix, $args) = &split_userdb_string($str);
9435 if ($proto eq "mysql") {
9436 # Connect to MySQL with DBI
9437 my $drh = eval "use DBI; DBI->install_driver('mysql');";
9438 $drh || return $text{'sql_emysqldriver'};
9439 my ($host, $port) = split(/:/, $host);
9440 my $cstr = "database=$prefix;host=$host";
9441 $cstr .= ";port=$port" if ($port);
9442 my $dbh = $drh->connect($cstr, $user, $pass, { });
9443 $dbh || return &text('sql_emysqlconnect', $drh->errstr);
9444 return wantarray ? ($dbh, $proto, $prefix, $args) : $dbh;
9446 elsif ($proto eq "postgresql") {
9447 # Connect to PostgreSQL with DBI
9448 my $drh = eval "use DBI; DBI->install_driver('Pg');";
9449 $drh || return $text{'sql_epostgresqldriver'};
9450 my ($host, $port) = split(/:/, $host);
9451 my $cstr = "dbname=$prefix;host=$host";
9452 $cstr .= ";port=$port" if ($port);
9453 my $dbh = $drh->connect($cstr, $user, $pass);
9454 $dbh || return &text('sql_epostgresqlconnect', $drh->errstr);
9455 return wantarray ? ($dbh, $proto, $prefix, $args) : $dbh;
9457 elsif ($proto eq "ldap") {
9458 # Connect with perl LDAP module
9459 eval "use Net::LDAP";
9460 $@ && return $text{'sql_eldapdriver'};
9461 my ($host, $port) = split(/:/, $host);
9462 my $scheme = $args->{'scheme'} || 'ldap';
9464 $port = $scheme eq 'ldaps' ? 636 : 389;
9466 my $ldap = Net::LDAP->new($host,
9468 'scheme' => $scheme);
9469 $ldap || return &text('sql_eldapconnect', $host);
9471 if ($args->{'tls'}) {
9472 # Switch to TLS mode
9473 eval { $mesg = $ldap->start_tls(); };
9474 if ($@ || !$mesg || $mesg->code) {
9475 return &text('sql_eldaptls',
9476 $@ ? $@ : $mesg ? $mesg->error : "Unknown error");
9479 # Login to the server
9481 $mesg = $ldap->bind(dn => $user, password => $pass);
9484 $mesg = $ldap->bind(dn => $user, anonymous => 1);
9486 if (!$mesg || $mesg->code) {
9487 return &text('sql_eldaplogin', $user,
9488 $mesg ? $mesg->error : "Unknown error");
9490 return wantarray ? ($ldap, $proto, $prefix, $args) : $ldap;
9493 return "Unknown protocol $proto";
9497 =head2 disconnect_userdb(string, &handle)
9499 Closes a handle opened by connect_userdb
9502 sub disconnect_userdb
9505 if ($str =~ /^(mysql|postgresql):/) {
9507 if (!$h->{'AutoCommit'}) {
9512 elsif ($str =~ /^ldap:/) {
9519 =head2 split_userdb_string(string)
9521 Converts a string like mysql://user:pass@host/db into separate parts
9524 sub split_userdb_string
9527 if ($str =~ /^([a-z]+):\/\/([^:]*):([^\@]*)\@([a-z0-9\.\-\_]+)\/([^\?]+)(\?(.*))?$/) {
9528 my ($proto, $user, $pass, $host, $prefix, $argstr) =
9529 ($1, $2, $3, $4, $5, $7);
9530 my %args = map { split(/=/, $_, 2) } split(/\&/, $argstr);
9531 return ($proto, $user, $pass, $host, $prefix, \%args);
9536 $done_web_lib_funcs = 1;