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;
1953 if ($gconfig{'os_type'} ne 'windows') {
1954 # Send a USR1 signal to re-read the config
1955 my ($pid, $addr, $i);
1956 $miniserv{'inetd'} && return;
1957 $pid = $ENV{'MINISERV_PID'};
1959 open(PID, $miniserv{'pidfile'}) ||
1960 &error("Failed to open PID file $miniserv{'pidfile'}");
1963 $pid || &error("Invalid PID file $miniserv{'pidfile'}");
1965 &kill_logged('USR1', $pid) || &error("Incorrect Webmin PID $pid");
1967 # Make sure this didn't kill Webmin!
1969 if (!kill(0, $pid)) {
1970 print STDERR "USR1 signal killed Webmin - restarting\n";
1971 &system_logged("$config_directory/start >/dev/null 2>&1 </dev/null");
1975 # On Windows, we need to use the flag file
1976 open(TOUCH, ">$miniserv{'reloadflag'}");
1981 =head2 check_os_support(&minfo, [os-type, os-version], [api-only])
1983 Returns 1 if some module is supported on the current operating system, or the
1984 OS supplies as parameters. The parameters are :
1986 =item minfo - A hash ref of module information, as returned by get_module_info
1988 =item os-type - The Webmin OS code to use instead of the system's real OS, such as redhat-linux
1990 =item os-version - The Webmin OS version to use, such as 13.0
1992 =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.
1995 sub check_os_support
1997 my $oss = $_[0]->{'os_support'};
1998 if ($_[3] && $oss && $_[0]->{'api_os_support'}) {
1999 # May provide usable API
2000 $oss .= " ".$_[0]->{'api_os_support'};
2002 if ($_[0]->{'nozone'} && &running_in_zone()) {
2003 # Not supported in a Solaris Zone
2006 if ($_[0]->{'novserver'} && &running_in_vserver()) {
2007 # Not supported in a Linux Vserver
2010 if ($_[0]->{'noopenvz'} && &running_in_openvz()) {
2011 # Not supported in an OpenVZ container
2014 return 1 if (!$oss || $oss eq '*');
2015 my $osver = $_[2] || $gconfig{'os_version'};
2016 my $ostype = $_[1] || $gconfig{'os_type'};
2019 my ($os, $ver, $codes);
2020 my ($neg) = ($oss =~ s/^!//); # starts with !
2021 $anyneg++ if ($neg);
2022 if ($oss =~ /^([^\/\s]+)\/([^\{\s]+)\{([^\}]*)\}\s*(.*)$/) {
2024 $os = $1; $ver = $2; $codes = $3; $oss = $4;
2026 elsif ($oss =~ /^([^\/\s]+)\/([^\/\s]+)\s*(.*)$/) {
2028 $os = $1; $ver = $2; $oss = $3;
2030 elsif ($oss =~ /^([^\{\s]+)\{([^\}]*)\}\s*(.*)$/) {
2032 $os = $1; $codes = $2; $oss = $3;
2034 elsif ($oss =~ /^\{([^\}]*)\}\s*(.*)$/) {
2036 $codes = $1; $oss = $2;
2038 elsif ($oss =~ /^(\S+)\s*(.*)$/) {
2040 $os = $1; $oss = $2;
2043 next if ($os && !($os eq $ostype ||
2044 $ostype =~ /^(\S+)-(\S+)$/ && $os eq "*-$2"));
2045 if ($ver =~ /^([0-9\.]+)\-([0-9\.]+)$/) {
2046 next if ($osver < $1 || $osver > $2);
2048 elsif ($ver =~ /^([0-9\.]+)\-\*$/) {
2049 next if ($osver < $1);
2051 elsif ($ver =~ /^\*\-([0-9\.]+)$/) {
2052 next if ($osver > $1);
2055 next if ($ver ne $osver);
2057 next if ($codes && !eval $codes);
2063 =head2 http_download(host, port, page, destfile, [&error], [&callback], [sslmode], [user, pass], [timeout], [osdn-convert], [no-cache], [&headers])
2065 Downloads data from a HTTP url to a local file or string. The parameters are :
2067 =item host - The hostname part of the URL, such as www.google.com
2069 =item port - The HTTP port number, such as 80
2071 =item page - The filename part of the URL, like /index.html
2073 =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.
2075 =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.
2077 =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.
2079 =item sslmode - If set to 1, an HTTPS connection is used instead of HTTP.
2081 =item user - If set, HTTP authentication is done with this username.
2083 =item pass - The HTTP password to use with the username above.
2085 =item timeout - A timeout in seconds to wait for the TCP connection to be established before failing.
2087 =item osdn-convert - If set to 1, URL for downloads from sourceforge are converted to use an appropriate mirror site.
2089 =item no-cache - If set to 1, Webmin's internal caching for this URL is disabled.
2091 =item headers - If set to a hash ref of additional HTTP headers, they will be added to the request.
2096 my ($host, $port, $page, $dest, $error, $cbfunc, $ssl, $user, $pass,
2097 $timeout, $osdn, $nocache, $headers) = @_;
2098 if ($gconfig{'debug_what_net'}) {
2099 &webmin_debug_log('HTTP', "host=$host port=$port page=$page ssl=$ssl".
2100 ($user ? " user=$user pass=$pass" : "").
2101 (ref($dest) ? "" : " dest=$dest"));
2104 # Convert OSDN URL first
2105 my $prot = $ssl ? "https://" : "http://";
2106 my $portstr = $ssl && $port == 443 ||
2107 !$ssl && $port == 80 ? "" : ":$port";
2108 ($host, $port, $page, $ssl) = &parse_http_url(
2109 &convert_osdn_url($prot.$host.$portstr.$page));
2112 # Check if we already have cached the URL
2113 my $url = ($ssl ? "https://" : "http://").$host.":".$port.$page;
2114 my $cfile = &check_in_http_cache($url);
2115 if ($cfile && !$nocache) {
2116 # Yes! Copy to dest file or variable
2117 &$cbfunc(6, $url) if ($cbfunc);
2119 &open_readfile(CACHEFILE, $cfile);
2121 $$dest = <CACHEFILE>;
2125 ©_source_dest($cfile, $dest);
2132 push(@headers, [ "Host", $host ]);
2133 push(@headers, [ "User-agent", "Webmin" ]);
2134 push(@headers, [ "Accept-language", "en" ]);
2136 my $auth = &encode_base64("$user:$pass");
2137 $auth =~ tr/\r\n//d;
2138 push(@headers, [ "Authorization", "Basic $auth" ]);
2140 foreach my $hname (keys %$headers) {
2141 push(@headers, [ $hname, $headers->{$hname} ]);
2144 # Actually download it
2145 $main::download_timed_out = undef;
2146 local $SIG{ALRM} = \&download_timeout;
2147 alarm($timeout || 60);
2148 my $h = &make_http_connection($host, $port, $ssl, "GET", $page, \@headers);
2150 $h = $main::download_timed_out if ($main::download_timed_out);
2152 if ($error) { $$error = $h; return; }
2153 else { &error($h); }
2155 &complete_http_download($h, $dest, $error, $cbfunc, $osdn, $host, $port,
2156 $headers, $ssl, $nocache);
2157 if ((!$error || !$$error) && !$nocache) {
2158 &write_to_http_cache($url, $dest);
2162 =head2 complete_http_download(handle, destfile, [&error], [&callback], [osdn], [oldhost], [oldport], [&send-headers], [old-ssl], [no-cache])
2164 Do a HTTP download, after the headers have been sent. For internal use only,
2165 typically called by http_download.
2168 sub complete_http_download
2170 local ($line, %header, @headers, $s); # Kept local so that callback funcs
2176 ($line = &read_http_connection($_[0])) =~ tr/\r\n//d;
2177 if ($line !~ /^HTTP\/1\..\s+(200|30[0-9])(\s+|$)/) {
2179 if ($_[2]) { ${$_[2]} = $line; return; }
2180 else { &error("Download failed : $line"); }
2183 &$cbfunc(1, $rcode >= 300 && $rcode < 400 ? 1 : 0)
2186 $line = &read_http_connection($_[0]);
2187 $line =~ tr/\r\n//d;
2188 $line =~ /^(\S+):\s+(.*)$/ || last;
2189 $header{lc($1)} = $2;
2190 push(@headers, [ lc($1), $2 ]);
2193 if ($main::download_timed_out) {
2194 if ($_[2]) { ${$_[2]} = $main::download_timed_out; return 0; }
2195 else { &error($main::download_timed_out); }
2197 &$cbfunc(2, $header{'content-length'}) if ($cbfunc);
2198 if ($rcode >= 300 && $rcode < 400) {
2199 # follow the redirect
2200 &$cbfunc(5, $header{'location'}) if ($cbfunc);
2201 my ($host, $port, $page, $ssl);
2202 if ($header{'location'} =~ /^(http|https):\/\/([^:]+):(\d+)(\/.*)?$/) {
2203 $ssl = $1 eq 'https' ? 1 : 0;
2204 $host = $2; $port = $3; $page = $4 || "/";
2206 elsif ($header{'location'} =~ /^(http|https):\/\/([^:\/]+)(\/.*)?$/) {
2207 $ssl = $1 eq 'https' ? 1 : 0;
2208 $host = $2; $port = 80; $page = $3 || "/";
2210 elsif ($header{'location'} =~ /^\// && $_[5]) {
2211 # Relative to same server
2215 $page = $header{'location'};
2217 elsif ($header{'location'}) {
2218 # Assume relative to same dir .. not handled
2219 if ($_[2]) { ${$_[2]} = "Invalid Location header $header{'location'}"; return; }
2220 else { &error("Invalid Location header $header{'location'}"); }
2223 if ($_[2]) { ${$_[2]} = "Missing Location header"; return; }
2224 else { &error("Missing Location header"); }
2227 ($page, $params) = split(/\?/, $page);
2229 $page .= "?".$params if (defined($params));
2230 &http_download($host, $port, $page, $_[1], $_[2], $cbfunc, $ssl,
2231 undef, undef, undef, $_[4], $_[9], $_[7]);
2236 # Append to a variable
2237 while(defined($buf = &read_http_connection($_[0], 1024))) {
2239 &$cbfunc(3, length(${$_[1]})) if ($cbfunc);
2245 if (!&open_tempfile(PFILE, ">$_[1]", 1)) {
2246 if ($_[2]) { ${$_[2]} = "Failed to write to $_[1] : $!"; return; }
2247 else { &error("Failed to write to $_[1] : $!"); }
2249 binmode(PFILE); # For windows
2250 while(defined($buf = &read_http_connection($_[0], 1024))) {
2251 &print_tempfile(PFILE, $buf);
2252 $got += length($buf);
2253 &$cbfunc(3, $got) if ($cbfunc);
2255 &close_tempfile(PFILE);
2256 if ($header{'content-length'} &&
2257 $got != $header{'content-length'}) {
2258 if ($_[2]) { ${$_[2]} = "Download incomplete"; return; }
2259 else { &error("Download incomplete"); }
2262 &$cbfunc(4) if ($cbfunc);
2264 &close_http_connection($_[0]);
2268 =head2 ftp_download(host, file, destfile, [&error], [&callback], [user, pass], [port])
2270 Download data from an FTP site to a local file. The parameters are :
2272 =item host - FTP server hostname
2274 =item file - File on the FTP server to download
2276 =item destfile - File on the Webmin system to download data to
2278 =item error - If set to a string ref, any error message is written into this string and the function returns 0 on failure, 1 on success. Otherwise, error is called on failure.
2280 =item callback - If set to a function ref, it will be called after each block of data is received. This is typically set to \&progress_callback, for printing download progress.
2282 =item user - Username to login to the FTP server as. If missing, Webmin will login as anonymous.
2284 =item pass - Password for the username above.
2286 =item port - FTP server port number, which defaults to 21 if not set.
2291 my ($host, $file, $dest, $error, $cbfunc, $user, $pass, $port) = @_;
2293 if ($gconfig{'debug_what_net'}) {
2294 &webmin_debug_log('FTP', "host=$host port=$port file=$file".
2295 ($user ? " user=$user pass=$pass" : "").
2296 (ref($dest) ? "" : " dest=$dest"));
2300 if (&is_readonly_mode()) {
2301 if ($_[3]) { ${$_[3]} = "FTP connections not allowed in readonly mode";
2303 else { &error("FTP connections not allowed in readonly mode"); }
2306 # Check if we already have cached the URL
2307 my $url = "ftp://".$host.$file;
2308 my $cfile = &check_in_http_cache($url);
2310 # Yes! Copy to dest file or variable
2311 &$cbfunc(6, $url) if ($cbfunc);
2313 &open_readfile(CACHEFILE, $cfile);
2315 $$dest = <CACHEFILE>;
2319 ©_source_dest($cfile, $dest);
2324 # Actually download it
2325 $main::download_timed_out = undef;
2326 local $SIG{ALRM} = \&download_timeout;
2329 if ($gconfig{'ftp_proxy'} =~ /^http:\/\/(\S+):(\d+)/ && !&no_proxy($_[0])) {
2330 # download through http-style proxy
2332 if (&open_socket($1, $2, "SOCK", \$error)) {
2334 if ($main::download_timed_out) {
2336 if ($_[3]) { ${$_[3]} = $main::download_timed_out; return 0; }
2337 else { &error($main::download_timed_out); }
2339 my $esc = $_[1]; $esc =~ s/ /%20/g;
2340 my $up = "$_[5]:$_[6]\@" if ($_[5]);
2341 my $portstr = $port == 21 ? "" : ":$port";
2342 print SOCK "GET ftp://$up$_[0]$portstr$esc HTTP/1.0\r\n";
2343 print SOCK "User-agent: Webmin\r\n";
2344 if ($gconfig{'proxy_user'}) {
2345 my $auth = &encode_base64(
2346 "$gconfig{'proxy_user'}:$gconfig{'proxy_pass'}");
2347 $auth =~ tr/\r\n//d;
2348 print SOCK "Proxy-Authorization: Basic $auth\r\n";
2351 &complete_http_download({ 'fh' => "SOCK" }, $_[2], $_[3], $_[4]);
2354 elsif (!$gconfig{'proxy_fallback'}) {
2356 if ($error) { $$error = $main::download_timed_out; return 0; }
2357 else { &error($main::download_timed_out); }
2362 # connect to host and login with real FTP protocol
2363 &open_socket($_[0], $port, "SOCK", $_[3]) || return 0;
2365 if ($main::download_timed_out) {
2366 if ($_[3]) { ${$_[3]} = $main::download_timed_out; return 0; }
2367 else { &error($main::download_timed_out); }
2369 &ftp_command("", 2, $_[3]) || return 0;
2371 # Login as supplied user
2372 my @urv = &ftp_command("USER $_[5]", [ 2, 3 ], $_[3]);
2374 if (int($urv[1]/100) == 3) {
2375 &ftp_command("PASS $_[6]", 2, $_[3]) || return 0;
2379 # Login as anonymous
2380 my @urv = &ftp_command("USER anonymous", [ 2, 3 ], $_[3]);
2382 if (int($urv[1]/100) == 3) {
2383 &ftp_command("PASS root\@".&get_system_hostname(), 2,
2387 &$cbfunc(1, 0) if ($cbfunc);
2390 # get the file size and tell the callback
2391 &ftp_command("TYPE I", 2, $_[3]) || return 0;
2392 my $size = &ftp_command("SIZE $_[1]", 2, $_[3]);
2393 defined($size) || return 0;
2395 &$cbfunc(2, int($size));
2399 my $pasv = &ftp_command("PASV", 2, $_[3]);
2400 defined($pasv) || return 0;
2401 $pasv =~ /\(([0-9,]+)\)/;
2402 @n = split(/,/ , $1);
2403 &open_socket("$n[0].$n[1].$n[2].$n[3]",
2404 $n[4]*256 + $n[5], "CON", $_[3]) || return 0;
2405 &ftp_command("RETR $_[1]", 1, $_[3]) || return 0;
2409 &open_tempfile(PFILE, ">$_[2]", 1);
2410 while(read(CON, $buf, 1024) > 0) {
2411 &print_tempfile(PFILE, $buf);
2412 $got += length($buf);
2413 &$cbfunc(3, $got) if ($cbfunc);
2415 &close_tempfile(PFILE);
2417 if ($got != $size) {
2418 if ($_[3]) { ${$_[3]} = "Download incomplete"; return 0; }
2419 else { &error("Download incomplete"); }
2421 &$cbfunc(4) if ($cbfunc);
2423 &ftp_command("", 2, $_[3]) || return 0;
2427 &ftp_command("QUIT", 2, $_[3]) || return 0;
2431 &write_to_http_cache($url, $dest);
2435 =head2 ftp_upload(host, file, srcfile, [&error], [&callback], [user, pass], [port])
2437 Upload data from a local file to an FTP site. The parameters are :
2439 =item host - FTP server hostname
2441 =item file - File on the FTP server to write to
2443 =item srcfile - File on the Webmin system to upload data from
2445 =item error - If set to a string ref, any error message is written into this string and the function returns 0 on failure, 1 on success. Otherwise, error is called on failure.
2447 =item callback - If set to a function ref, it will be called after each block of data is received. This is typically set to \&progress_callback, for printing upload progress.
2449 =item user - Username to login to the FTP server as. If missing, Webmin will login as anonymous.
2451 =item pass - Password for the username above.
2453 =item port - FTP server port number, which defaults to 21 if not set.
2460 if (&is_readonly_mode()) {
2461 if ($_[3]) { ${$_[3]} = "FTP connections not allowed in readonly mode";
2463 else { &error("FTP connections not allowed in readonly mode"); }
2466 $main::download_timed_out = undef;
2467 local $SIG{ALRM} = \&download_timeout;
2470 # connect to host and login
2471 &open_socket($_[0], $_[7] || 21, "SOCK", $_[3]) || return 0;
2473 if ($main::download_timed_out) {
2474 if ($_[3]) { ${$_[3]} = $main::download_timed_out; return 0; }
2475 else { &error($main::download_timed_out); }
2477 &ftp_command("", 2, $_[3]) || return 0;
2479 # Login as supplied user
2480 my @urv = &ftp_command("USER $_[5]", [ 2, 3 ], $_[3]);
2482 if (int($urv[1]/100) == 3) {
2483 &ftp_command("PASS $_[6]", 2, $_[3]) || return 0;
2487 # Login as anonymous
2488 my @urv = &ftp_command("USER anonymous", [ 2, 3 ], $_[3]);
2490 if (int($urv[1]/100) == 3) {
2491 &ftp_command("PASS root\@".&get_system_hostname(), 2,
2495 &$cbfunc(1, 0) if ($cbfunc);
2497 &ftp_command("TYPE I", 2, $_[3]) || return 0;
2499 # get the file size and tell the callback
2500 my @st = stat($_[2]);
2502 &$cbfunc(2, $st[7]);
2506 my $pasv = &ftp_command("PASV", 2, $_[3]);
2507 defined($pasv) || return 0;
2508 $pasv =~ /\(([0-9,]+)\)/;
2509 @n = split(/,/ , $1);
2510 &open_socket("$n[0].$n[1].$n[2].$n[3]", $n[4]*256 + $n[5], "CON", $_[3]) || return 0;
2511 &ftp_command("STOR $_[1]", 1, $_[3]) || return 0;
2516 while(read(PFILE, $buf, 1024) > 0) {
2518 $got += length($buf);
2519 &$cbfunc(3, $got) if ($cbfunc);
2523 if ($got != $st[7]) {
2524 if ($_[3]) { ${$_[3]} = "Upload incomplete"; return 0; }
2525 else { &error("Upload incomplete"); }
2527 &$cbfunc(4) if ($cbfunc);
2530 &ftp_command("", 2, $_[3]) || return 0;
2531 &ftp_command("QUIT", 2, $_[3]) || return 0;
2537 =head2 no_proxy(host)
2539 Checks if some host is on the no proxy list. For internal use by the
2540 http_download and ftp_download functions.
2545 my $ip = &to_ipaddress($_[0]);
2546 foreach my $n (split(/\s+/, $gconfig{'noproxy'})) {
2547 return 1 if ($_[0] =~ /\Q$n\E/ ||
2553 =head2 open_socket(host, port, handle, [&error])
2555 Open a TCP connection to some host and port, using a file handle. The
2558 =item host - Hostname or IP address to connect to.
2560 =item port - TCP port number.
2562 =item handle - A file handle name to use for the connection.
2564 =item error - A string reference to write any error message into. If not set, the error function is called on failure.
2569 my ($host, $port, $fh, $err) = @_;
2570 $fh = &callers_package($fh);
2572 if ($gconfig{'debug_what_net'}) {
2573 &webmin_debug_log('TCP', "host=$host port=$port");
2576 # Lookup IP address for the host. Try v4 first, and failing that v6
2578 my $proto = getprotobyname("tcp");
2579 if ($ip = &to_ipaddress($host)) {
2580 # Create IPv4 socket and connection
2581 if (!socket($fh, PF_INET(), SOCK_STREAM, $proto)) {
2582 my $msg = "Failed to create socket : $!";
2583 if ($err) { $$err = $msg; return 0; }
2584 else { &error($msg); }
2586 my $addr = inet_aton($ip);
2587 if ($gconfig{'bind_proxy'}) {
2588 # BIND to outgoing IP
2589 if (!bind($fh,pack_sockaddr_in(0, inet_aton($gconfig{'bind_proxy'})))) {
2590 my $msg = "Failed to bind to source address : $!";
2591 if ($err) { $$err = $msg; return 0; }
2592 else { &error($msg); }
2595 if (!connect($fh, pack_sockaddr_in($port, $addr))) {
2596 my $msg = "Failed to connect to $host:$port : $!";
2597 if ($err) { $$err = $msg; return 0; }
2598 else { &error($msg); }
2601 elsif ($ip = &to_ip6address($host)) {
2602 # Create IPv6 socket and connection
2603 if (!&supports_ipv6()) {
2604 $msg = "IPv6 connections are not supported";
2605 if ($err) { $$err = $msg; return 0; }
2606 else { &error($msg); }
2608 if (!socket($fh, Socket6::PF_INET6(), SOCK_STREAM, $proto)) {
2609 my $msg = "Failed to create IPv6 socket : $!";
2610 if ($err) { $$err = $msg; return 0; }
2611 else { &error($msg); }
2613 my $addr = inet_pton(Socket6::AF_INET6(), $ip);
2614 if (!connect($fh, pack_sockaddr_in6($port, $addr))) {
2615 my $msg = "Failed to IPv6 connect to $host:$port : $!";
2616 if ($err) { $$err = $msg; return 0; }
2617 else { &error($msg); }
2622 my $msg = "Failed to lookup IP address for $host";
2623 if ($err) { $$err = $msg; return 0; }
2624 else { &error($msg); }
2628 my $old = select($fh);
2634 =head2 download_timeout
2636 Called when a download times out. For internal use only.
2639 sub download_timeout
2641 $main::download_timed_out = "Download timed out";
2644 =head2 ftp_command(command, expected, [&error], [filehandle])
2646 Send an FTP command, and die if the reply is not what was expected. Mainly
2647 for internal use by the ftp_download and ftp_upload functions.
2652 my ($cmd, $expect, $err, $fh) = @_;
2654 $fh = &callers_package($fh);
2657 my $what = $cmd ne "" ? "<i>$cmd</i>" : "initial connection";
2659 print $fh "$cmd\r\n";
2662 if (!($line = <$fh>)) {
2664 if ($err) { $$err = "Failed to read reply to $what"; return undef; }
2665 else { &error("Failed to read reply to $what"); }
2667 $line =~ /^(...)(.)(.*)$/;
2670 foreach my $c (@$expect) {
2671 $found++ if (int($1/100) == $c);
2675 $found++ if (int($1/100) == $_[1]);
2679 if ($err) { $$err = "$what failed : $3"; return undef; }
2680 else { &error("$what failed : $3"); }
2685 # Need to skip extra stuff..
2687 if (!($line = <$fh>)) {
2689 if ($$err) { $$err = "Failed to read reply to $what";
2691 else { &error("Failed to read reply to $what"); }
2693 $line =~ /^(....)(.*)$/; $reply .= $2;
2694 if ($1 eq "$rcode ") { last; }
2698 return wantarray ? ($reply, $rcode) : $reply;
2701 =head2 to_ipaddress(hostname)
2703 Converts a hostname to an a.b.c.d format IP address, or returns undef if
2704 it cannot be resolved.
2709 if (&check_ipaddress($_[0])) {
2710 return $_[0]; # Already in v4 format
2712 elsif (&check_ip6address($_[0])) {
2713 return undef; # A v6 address cannot be converted to v4
2716 my $hn = gethostbyname($_[0]);
2717 return undef if (!$hn);
2718 local @ip = unpack("CCCC", $hn);
2719 return join("." , @ip);
2723 =head2 to_ip6address(hostname)
2725 Converts a hostname to IPv6 address, or returns undef if it cannot be resolved.
2730 if (&check_ip6address($_[0])) {
2731 return $_[0]; # Already in v6 format
2733 elsif (&check_ipaddress($_[0])) {
2734 return undef; # A v4 address cannot be v6
2736 elsif (!&supports_ipv6()) {
2737 return undef; # Cannot lookup
2740 # Perform IPv6 DNS lookup
2742 (undef, undef, undef, $inaddr) =
2743 getaddrinfo($_[0], undef, Socket6::AF_INET6(), SOCK_STREAM);
2744 return undef if (!$inaddr);
2746 (undef, $addr) = unpack_sockaddr_in6($inaddr);
2747 return inet_ntop(Socket6::AF_INET6(), $addr);
2751 =head2 to_hostname(ipv4|ipv6-address)
2753 Reverse-resolves an IPv4 or 6 address to a hostname
2759 if (&check_ip6address($addr) && &supports_ipv6()) {
2760 return gethostbyaddr(inet_pton(Socket6::AF_INET6(), $addr),
2761 Socket6::AF_INET6());
2764 return gethostbyaddr(inet_aton($addr), AF_INET);
2768 =head2 icons_table(&links, &titles, &icons, [columns], [href], [width], [height], &befores, &afters)
2770 Renders a 4-column table of icons. The useful parameters are :
2772 =item links - An array ref of link destination URLs for the icons.
2774 =item titles - An array ref of titles to appear under the icons.
2776 =item icons - An array ref of URLs for icon images.
2778 =item columns - Number of columns to layout the icons with. Defaults to 4.
2783 &load_theme_library();
2784 if (defined(&theme_icons_table)) {
2785 &theme_icons_table(@_);
2789 my $cols = $_[3] ? $_[3] : 4;
2790 my $per = int(100.0 / $cols);
2791 print "<table class='icons_table' width=100% cellpadding=5>\n";
2792 for(my $i=0; $i<@{$_[0]}; $i++) {
2793 if ($i%$cols == 0) { print "<tr>\n"; }
2794 print "<td width=$per% align=center valign=top>\n";
2795 &generate_icon($_[2]->[$i], $_[1]->[$i], $_[0]->[$i],
2796 ref($_[4]) ? $_[4]->[$i] : $_[4], $_[5], $_[6],
2797 $_[7]->[$i], $_[8]->[$i]);
2799 if ($i%$cols == $cols-1) { print "</tr>\n"; }
2801 while($i++%$cols) { print "<td width=$per%></td>\n"; $need_tr++; }
2802 print "</tr>\n" if ($need_tr);
2806 =head2 replace_file_line(file, line, [newline]*)
2808 Replaces one line in some file with 0 or more new lines. The parameters are :
2810 =item file - Full path to some file, like /etc/hosts.
2812 =item line - Line number to replace, starting from 0.
2814 =item newline - Zero or more lines to put into the file at the given line number. These must be newline-terminated strings.
2817 sub replace_file_line
2820 my $realfile = &translate_filename($_[0]);
2821 open(FILE, $realfile);
2824 if (@_ > 2) { splice(@lines, $_[1], 1, @_[2..$#_]); }
2825 else { splice(@lines, $_[1], 1); }
2826 &open_tempfile(FILE, ">$realfile");
2827 &print_tempfile(FILE, @lines);
2828 &close_tempfile(FILE);
2831 =head2 read_file_lines(file, [readonly])
2833 Returns a reference to an array containing the lines from some file. This
2834 array can be modified, and will be written out when flush_file_lines()
2835 is called. The parameters are :
2837 =item file - Full path to the file to read.
2839 =item readonly - Should be set 1 if the caller is only going to read the lines, and never write it out.
2843 $lref = read_file_lines("/etc/hosts");
2844 push(@$lref, "127.0.0.1 localhost");
2845 flush_file_lines("/etc/hosts");
2851 my ($package, $filename, $line) = caller;
2852 print STDERR "Missing file to read at ${package}::${filename} line $line\n";
2854 my $realfile = &translate_filename($_[0]);
2855 if (!$main::file_cache{$realfile}) {
2858 &webmin_debug_log('READ', $_[0]) if ($gconfig{'debug_what_read'});
2859 open(READFILE, $realfile);
2862 $eol = /\r\n$/ ? "\r\n" : "\n";
2868 $main::file_cache{$realfile} = \@lines;
2869 $main::file_cache_noflush{$realfile} = $_[1];
2870 $main::file_cache_eol{$realfile} = $eol || "\n";
2873 # Make read-write if currently readonly
2875 $main::file_cache_noflush{$realfile} = 0;
2878 return $main::file_cache{$realfile};
2881 =head2 flush_file_lines([file], [eol])
2883 Write out to a file previously read by read_file_lines to disk (except
2884 for those marked readonly). The parameters are :
2886 =item file - The file to flush out.
2888 =item eof - End-of-line character for each line. Defaults to \n.
2891 sub flush_file_lines
2895 local $trans = &translate_filename($_[0]);
2896 $main::file_cache{$trans} ||
2897 &error("flush_file_lines called on non-loaded file $trans");
2898 push(@files, $trans);
2901 @files = ( keys %main::file_cache );
2903 foreach my $f (@files) {
2904 my $eol = $_[1] || $main::file_cache_eol{$f} || "\n";
2905 if (!$main::file_cache_noflush{$f}) {
2906 no warnings; # XXX Bareword file handles should go away
2907 &open_tempfile(FLUSHFILE, ">$f");
2908 foreach my $line (@{$main::file_cache{$f}}) {
2909 (print FLUSHFILE $line,$eol) ||
2910 &error(&text("efilewrite", $f, $!));
2912 &close_tempfile(FLUSHFILE);
2914 delete($main::file_cache{$f});
2915 delete($main::file_cache_noflush{$f});
2919 =head2 unflush_file_lines(file)
2921 Clear the internal cache of some given file, previously read by read_file_lines.
2924 sub unflush_file_lines
2926 my $realfile = &translate_filename($_[0]);
2927 delete($main::file_cache{$realfile});
2928 delete($main::file_cache_noflush{$realfile});
2931 =head2 unix_user_input(fieldname, user, [form])
2933 Returns HTML for an input to select a Unix user. By default this is a text
2934 box with a user popup button next to it.
2939 if (defined(&theme_unix_user_input)) {
2940 return &theme_unix_user_input(@_);
2942 return "<input name=$_[0] size=13 value=\"$_[1]\"> ".
2943 &user_chooser_button($_[0], 0, $_[2] || 0)."\n";
2946 =head2 unix_group_input(fieldname, user, [form])
2948 Returns HTML for an input to select a Unix group. By default this is a text
2949 box with a group popup button next to it.
2952 sub unix_group_input
2954 if (defined(&theme_unix_group_input)) {
2955 return &theme_unix_group_input(@_);
2957 return "<input name=$_[0] size=13 value=\"$_[1]\"> ".
2958 &group_chooser_button($_[0], 0, $_[2] || 0)."\n";
2961 =head2 hlink(text, page, [module], [width], [height])
2963 Returns HTML for a link that when clicked on pops up a window for a Webmin
2964 help page. The parameters are :
2966 =item text - Text for the link.
2968 =item page - Help page code, such as 'intro'.
2970 =item module - Module the help page is in. Defaults to the current module.
2972 =item width - Width of the help popup window. Defaults to 600 pixels.
2974 =item height - Height of the help popup window. Defaults to 400 pixels.
2976 The actual help pages are in each module's help sub-directory, in files with
2982 if (defined(&theme_hlink)) {
2983 return &theme_hlink(@_);
2985 my $mod = $_[2] ? $_[2] : &get_module_name();
2986 my $width = $_[3] || $tconfig{'help_width'} || $gconfig{'help_width'} || 600;
2987 my $height = $_[4] || $tconfig{'help_height'} || $gconfig{'help_height'} || 400;
2988 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>";
2991 =head2 user_chooser_button(field, multiple, [form])
2993 Returns HTML for a javascript button for choosing a Unix user or users.
2994 The parameters are :
2996 =item field - Name of the HTML field to place the username into.
2998 =item multiple - Set to 1 if multiple users can be selected.
3000 =item form - Index of the form on the page.
3003 sub user_chooser_button
3005 return undef if (!&supports_users());
3006 return &theme_user_chooser_button(@_)
3007 if (defined(&theme_user_chooser_button));
3008 my $form = defined($_[2]) ? $_[2] : 0;
3009 my $w = $_[1] ? 500 : 300;
3011 if ($_[1] && $gconfig{'db_sizeusers'}) {
3012 ($w, $h) = split(/x/, $gconfig{'db_sizeusers'});
3014 elsif (!$_[1] && $gconfig{'db_sizeuser'}) {
3015 ($w, $h) = split(/x/, $gconfig{'db_sizeuser'});
3017 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";
3020 =head2 group_chooser_button(field, multiple, [form])
3022 Returns HTML for a javascript button for choosing a Unix group or groups
3023 The parameters are :
3025 =item field - Name of the HTML field to place the group name into.
3027 =item multiple - Set to 1 if multiple groups can be selected.
3029 =item form - Index of the form on the page.
3032 sub group_chooser_button
3034 return undef if (!&supports_users());
3035 return &theme_group_chooser_button(@_)
3036 if (defined(&theme_group_chooser_button));
3037 my $form = defined($_[2]) ? $_[2] : 0;
3038 my $w = $_[1] ? 500 : 300;
3040 if ($_[1] && $gconfig{'db_sizeusers'}) {
3041 ($w, $h) = split(/x/, $gconfig{'db_sizeusers'});
3043 elsif (!$_[1] && $gconfig{'db_sizeuser'}) {
3044 ($w, $h) = split(/x/, $gconfig{'db_sizeuser'});
3046 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";
3049 =head2 foreign_check(module, [api-only])
3051 Checks if some other module exists and is supported on this OS. The parameters
3054 =item module - Name of the module to check.
3056 =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.
3061 my ($mod, $api) = @_;
3063 my $mdir = &module_root_directory($mod);
3064 &read_file_cached("$mdir/module.info", \%minfo) || return 0;
3065 return &check_os_support(\%minfo, undef, undef, $api);
3068 =head2 foreign_exists(module)
3070 Checks if some other module exists. The module parameter is the short module
3076 my $mdir = &module_root_directory($_[0]);
3077 return -r "$mdir/module.info";
3080 =head2 foreign_available(module)
3082 Returns 1 if some module is installed, and acessible to the current user. The
3083 module parameter is the module directory name.
3086 sub foreign_available
3088 return 0 if (!&foreign_check($_[0]) &&
3089 !$gconfig{'available_even_if_no_support'});
3090 my %foreign_module_info = &get_module_info($_[0]);
3092 # Check list of allowed modules
3094 &read_acl(\%acl, undef, [ $base_remote_user ]);
3095 return 0 if (!$acl{$base_remote_user,$_[0]} &&
3096 !$acl{$base_remote_user,'*'});
3098 # Check for usermod restrictions
3099 my @usermods = &list_usermods();
3100 return 0 if (!&available_usermods( [ \%foreign_module_info ], \@usermods));
3102 if (&get_product_name() eq "webmin") {
3103 # Check if the user has any RBAC privileges in this module
3104 if (&supports_rbac($_[0]) &&
3105 &use_rbac_module_acl(undef, $_[0])) {
3106 # RBAC is enabled for this user and module - check if he
3108 my $rbacs = &get_rbac_module_acl($remote_user, $_[0]);
3109 return 0 if (!$rbacs);
3111 elsif ($gconfig{'rbacdeny_'.$base_remote_user}) {
3112 # If denying access to modules not specifically allowed by
3113 # RBAC, then prevent access
3118 # Check readonly support
3119 if (&is_readonly_mode()) {
3120 return 0 if (!$foreign_module_info{'readonly'});
3123 # Check if theme vetos
3124 if (defined(&theme_foreign_available)) {
3125 return 0 if (!&theme_foreign_available($_[0]));
3128 # Check if licence module vetos
3129 if ($main::licence_module) {
3130 return 0 if (!&foreign_call($main::licence_module,
3131 "check_module_licence", $_[0]));
3137 =head2 foreign_require(module, [file], [package])
3139 Brings in functions from another module, and places them in the Perl namespace
3140 with the same name as the module. The parameters are :
3142 =item module - The source module's directory name, like sendmail.
3144 =item file - The API file in that module, like sendmail-lib.pl. If missing, all API files are loaded.
3146 =item package - Perl package to place the module's functions and global variables in.
3148 If the original module name contains dashes, they will be replaced with _ in
3154 my ($mod, $file, $pkg) = @_;
3155 $pkg ||= $mod || "global";
3156 $pkg =~ s/[^A-Za-z0-9]/_/g;
3159 push(@files, $file);
3163 my %minfo = &get_module_info($mod);
3164 if ($minfo{'library'}) {
3165 @files = split(/\s+/, $minfo{'library'});
3168 @files = ( $mod."-lib.pl" );
3171 @files = grep { !$main::done_foreign_require{$pkg,$_} } @files;
3172 return 1 if (!@files);
3173 foreach my $f (@files) {
3174 $main::done_foreign_require{$pkg,$f}++;
3177 my $mdir = &module_root_directory($mod);
3178 @INC = &unique($mdir, @INC);
3179 -d $mdir || &error("Module $mod does not exist");
3180 if (!&get_module_name() && $mod) {
3183 my $old_fmn = $ENV{'FOREIGN_MODULE_NAME'};
3184 my $old_frd = $ENV{'FOREIGN_ROOT_DIRECTORY'};
3185 my $code = "package $pkg; ".
3186 "\$ENV{'FOREIGN_MODULE_NAME'} = '$mod'; ".
3187 "\$ENV{'FOREIGN_ROOT_DIRECTORY'} = '$root_directory'; ";
3188 foreach my $f (@files) {
3189 $code .= "do '$mdir/$f' || die \$@; ";
3192 if (defined($old_fmn)) {
3193 $ENV{'FOREIGN_MODULE_NAME'} = $old_fmn;
3196 delete($ENV{'FOREIGN_MODULE_NAME'});
3198 if (defined($old_frd)) {
3199 $ENV{'FOREIGN_ROOT_DIRECTORY'} = $old_frd;
3202 delete($ENV{'FOREIGN_ROOT_DIRECTORY'});
3205 if ($@) { &error("Require $mod/$files[0] failed : <pre>$@</pre>"); }
3209 =head2 foreign_call(module, function, [arg]*)
3211 Call a function in another module. The module parameter is the target module
3212 directory name, function is the perl sub to call, and the remaining parameters
3213 are the arguments. However, unless you need to call a function whose name
3214 is dynamic, it is better to use Perl's cross-module function call syntax
3215 like module::function(args).
3220 my $pkg = $_[0] || "global";
3221 $pkg =~ s/[^A-Za-z0-9]/_/g;
3222 my @args = @_[2 .. @_-1];
3223 $main::foreign_args = \@args;
3224 my @rv = eval <<EOF;
3226 &$_[1](\@{\$main::foreign_args});
3228 if ($@) { &error("$_[0]::$_[1] failed : $@"); }
3229 return wantarray ? @rv : $rv[0];
3232 =head2 foreign_config(module, [user-config])
3234 Get the configuration from another module, and return it as a hash. If the
3235 user-config parameter is set to 1, returns the Usermin user-level preferences
3236 for the current user instead.
3241 my ($mod, $uc) = @_;
3244 &read_file_cached("$root_directory/$mod/defaultuconfig", \%fconfig);
3245 &read_file_cached("$config_directory/$mod/uconfig", \%fconfig);
3246 &read_file_cached("$user_config_directory/$mod/config", \%fconfig);
3249 &read_file_cached("$config_directory/$mod/config", \%fconfig);
3254 =head2 foreign_installed(module, mode)
3256 Checks if the server for some module is installed, and possibly also checks
3257 if the module has been configured by Webmin.
3258 For mode 1, returns 2 if the server is installed and configured for use by
3259 Webmin, 1 if installed but not configured, or 0 otherwise.
3260 For mode 0, returns 1 if installed, 0 if not.
3261 If the module does not provide an install_check.pl script, assumes that
3262 the server is installed.
3265 sub foreign_installed
3267 my ($mod, $configured) = @_;
3268 if (defined($main::foreign_installed_cache{$mod,$configured})) {
3270 return $main::foreign_installed_cache{$mod,$configured};
3274 if (!&foreign_check($mod)) {
3279 my $mdir = &module_root_directory($mod);
3280 if (!-r "$mdir/install_check.pl") {
3281 # Not known, assume OK
3282 $rv = $configured ? 2 : 1;
3285 # Call function to check
3286 &foreign_require($mod, "install_check.pl");
3287 $rv = &foreign_call($mod, "is_installed", $configured);
3290 $main::foreign_installed_cache{$mod,$configured} = $rv;
3295 =head2 foreign_defined(module, function)
3297 Returns 1 if some function is defined in another module. In general, it is
3298 simpler to use the syntax &defined(module::function) instead.
3304 $pkg =~ s/[^A-Za-z0-9]/_/g;
3305 my $func = "${pkg}::$_[1]";
3306 return defined(&$func);
3309 =head2 get_system_hostname([short], [skip-file])
3311 Returns the hostname of this system. If the short parameter is set to 1,
3312 then the domain name is not prepended - otherwise, Webmin will attempt to get
3313 the fully qualified hostname, like foo.example.com.
3316 sub get_system_hostname
3319 my $skipfile = $_[1];
3320 if (!$main::get_system_hostname[$m]) {
3321 if ($gconfig{'os_type'} ne 'windows') {
3322 # Try some common Linux hostname files first
3325 # Never get from file
3327 elsif ($gconfig{'os_type'} eq 'redhat-linux') {
3329 &read_env_file("/etc/sysconfig/network", \%nc);
3330 if ($nc{'HOSTNAME'}) {
3331 $fromfile = $nc{'HOSTNAME'};
3334 elsif ($gconfig{'os_type'} eq 'debian-linux') {
3335 my $hn = &read_file_contents("/etc/hostname");
3341 elsif ($gconfig{'os_type'} eq 'open-linux') {
3342 my $hn = &read_file_contents("/etc/HOSTNAME");
3348 elsif ($gconfig{'os_type'} eq 'solaris') {
3349 my $hn = &read_file_contents("/etc/nodename");
3356 # If we found a hostname in a file, use it
3357 if ($fromfile && ($m || $fromfile =~ /\./)) {
3359 $fromfile =~ s/\..*$//;
3361 $main::get_system_hostname[$m] = $fromfile;
3365 # Can use hostname command on Unix
3366 &execute_command("hostname", undef,
3367 \$main::get_system_hostname[$m], undef, 0, 1);
3368 chop($main::get_system_hostname[$m]);
3370 eval "use Sys::Hostname";
3372 $main::get_system_hostname[$m] = eval "hostname()";
3374 if ($@ || !$main::get_system_hostname[$m]) {
3375 $main::get_system_hostname[$m] = "UNKNOWN";
3378 elsif ($main::get_system_hostname[$m] !~ /\./ &&
3379 $gconfig{'os_type'} =~ /linux$/ &&
3380 !$gconfig{'no_hostname_f'} && !$_[0]) {
3381 # Try with -f flag to get fully qualified name
3383 my $ex = &execute_command("hostname -f", undef, \$flag,
3386 if ($ex || $flag eq "") {
3387 # -f not supported! We have probably set the
3388 # hostname to just '-f'. Fix the problem
3391 &execute_command("hostname ".
3392 quotemeta($main::get_system_hostname[$m]),
3393 undef, undef, undef, 0, 1);
3397 $main::get_system_hostname[$m] = $flag;
3402 # On Windows, try computername environment variable
3403 return $ENV{'computername'} if ($ENV{'computername'});
3404 return $ENV{'COMPUTERNAME'} if ($ENV{'COMPUTERNAME'});
3406 # Fall back to net name command
3407 my $out = `net name 2>&1`;
3408 if ($out =~ /\-+\r?\n(\S+)/) {
3409 $main::get_system_hostname[$m] = $1;
3412 $main::get_system_hostname[$m] = "windows";
3416 return $main::get_system_hostname[$m];
3419 =head2 get_webmin_version
3421 Returns the version of Webmin currently being run, such as 1.450.
3424 sub get_webmin_version
3426 if (!$get_webmin_version) {
3427 open(VERSION, "$root_directory/version") || return 0;
3428 ($get_webmin_version = <VERSION>) =~ tr/\r|\n//d;
3431 return $get_webmin_version;
3434 =head2 get_module_acl([user], [module], [no-rbac], [no-default])
3436 Returns a hash containing access control options for the given user and module.
3437 By default the current username and module name are used. If the no-rbac flag
3438 is given, the permissions will not be updated based on the user's RBAC role
3439 (as seen on Solaris). If the no-default flag is given, default permissions for
3440 the module will not be included.
3445 my $u = defined($_[0]) ? $_[0] : $base_remote_user;
3446 my $m = defined($_[1]) ? $_[1] : &get_module_name();
3447 my $mdir = &module_root_directory($m);
3450 # Read default ACL first, to be overridden by per-user settings
3451 &read_file_cached("$mdir/defaultacl", \%rv);
3453 # If this isn't a master admin user, apply the negative permissions
3454 # so that he doesn't un-expectedly gain access to new features
3456 &read_file_cached("$config_directory/$u.acl", \%gaccess);
3457 if ($gaccess{'negative'}) {
3458 &read_file_cached("$mdir/negativeacl", \%rv);
3462 if (!$_[2] && &supports_rbac($m) && &use_rbac_module_acl($u, $m)) {
3463 # RBAC overrides exist for this user in this module
3464 my $rbac = &get_rbac_module_acl(
3465 defined($_[0]) ? $_[0] : $remote_user, $m);
3466 foreach my $r (keys %$rbac) {
3467 $rv{$r} = $rbac->{$r};
3470 elsif ($gconfig{"risk_$u"} && $m) {
3471 # ACL is defined by user's risk level
3472 my $rf = $gconfig{"risk_$u"}.'.risk';
3473 &read_file_cached("$mdir/$rf", \%rv);
3475 my $sf = $gconfig{"skill_$u"}.'.skill';
3476 &read_file_cached("$mdir/$sf", \%rv);
3479 # Use normal Webmin ACL, if a user is set
3480 my $userdb = &get_userdb_string();
3482 if ($userdb && ($u ne $base_remote_user || $remote_user_proto)) {
3483 # Look for this user in the user/group DB, if one is defined
3484 # and if the user might be in the DB
3485 my ($dbh, $proto, $prefix, $args) = &connect_userdb($userdb);
3486 ref($dbh) || &error(&text('euserdbacl', $dbh));
3487 if ($proto eq "mysql" || $proto eq "postgresql") {
3488 # Find the user in the SQL DB
3489 my $cmd = $dbh->prepare(
3490 "select id from webmin_user where name = ?");
3491 $cmd && $cmd->execute($u) ||
3492 &error(&text('euserdbacl', $dbh->errstr));
3493 my ($id) = $cmd->fetchrow();
3494 $foundindb = 1 if (defined($id));
3497 # Fetch ACLs with SQL
3499 my $cmd = $dbh->prepare(
3500 "select attr,value from webmin_user_acl ".
3501 "where id = ? and module = ?");
3502 $cmd && $cmd->execute($id, $m) ||
3503 &error(&text('euserdbacl', $dbh->errstr));
3504 while(my ($a, $v) = $cmd->fetchrow()) {
3510 elsif ($proto eq "ldap") {
3512 my $rv = $dbh->search(
3514 filter => '(&(cn='.$u.')(objectClass='.
3515 $args->{'userclass'}.'))',
3517 if (!$rv || $rv->code) {
3518 &error(&text('euserdbacl',
3519 $rv ? $rv->error : "Unknown error"));
3521 my ($user) = $rv->all_entries;
3523 # Find ACL sub-object for the module
3524 my $ldapm = $m || "global";
3526 my $rv = $dbh->search(
3527 base => $user->dn(),
3528 filter => '(cn='.$ldapm.')',
3530 if (!$rv || $rv->code) {
3531 &error(&text('euserdbacl',
3532 $rv ? $rv->error : "Unknown error"));
3534 my ($acl) = $rv->all_entries;
3536 foreach my $av ($acl->get_value(
3537 'webminAclEntry')) {
3538 my ($a, $v) = split(/=/, $av,2);
3544 &disconnect_userdb($userdb, $dbh);
3548 # Read from local files
3549 &read_file_cached("$config_directory/$m/$u.acl", \%rv);
3550 if ($remote_user ne $base_remote_user && !defined($_[0])) {
3552 "$config_directory/$m/$remote_user.acl",\%rv);
3556 if ($tconfig{'preload_functions'}) {
3557 &load_theme_library();
3559 if (defined(&theme_get_module_acl)) {
3560 %rv = &theme_get_module_acl($u, $m, \%rv);
3565 =head2 get_group_module_acl(group, [module], [no-default])
3567 Returns the ACL for a Webmin group, in an optional module (which defaults to
3568 the current module).
3571 sub get_group_module_acl
3574 my $m = defined($_[1]) ? $_[1] : &get_module_name();
3575 my $mdir = &module_root_directory($m);
3578 &read_file_cached("$mdir/defaultacl", \%rv);
3581 my $userdb = &get_userdb_string();
3584 # Look for this group in the user/group DB
3585 my ($dbh, $proto, $prefix, $args) = &connect_userdb($userdb);
3586 ref($dbh) || &error(&text('egroupdbacl', $dbh));
3587 if ($proto eq "mysql" || $proto eq "postgresql") {
3588 # Find the group in the SQL DB
3589 my $cmd = $dbh->prepare(
3590 "select id from webmin_group where name = ?");
3591 $cmd && $cmd->execute($g) ||
3592 &error(&text('egroupdbacl', $dbh->errstr));
3593 my ($id) = $cmd->fetchrow();
3594 $foundindb = 1 if (defined($id));
3597 # Fetch ACLs with SQL
3599 my $cmd = $dbh->prepare(
3600 "select attr,value from webmin_group_acl ".
3601 "where id = ? and module = ?");
3602 $cmd && $cmd->execute($id, $m) ||
3603 &error(&text('egroupdbacl', $dbh->errstr));
3604 while(my ($a, $v) = $cmd->fetchrow()) {
3610 elsif ($proto eq "ldap") {
3611 # Find group in LDAP
3612 my $rv = $dbh->search(
3614 filter => '(&(cn='.$g.')(objectClass='.
3615 $args->{'groupclass'}.'))',
3617 if (!$rv || $rv->code) {
3618 &error(&text('egroupdbacl',
3619 $rv ? $rv->error : "Unknown error"));
3621 my ($group) = $rv->all_entries;
3623 # Find ACL sub-object for the module
3624 my $ldapm = $m || "global";
3626 my $rv = $dbh->search(
3627 base => $group->dn(),
3628 filter => '(cn='.$ldapm.')',
3630 if (!$rv || $rv->code) {
3631 &error(&text('egroupdbacl',
3632 $rv ? $rv->error : "Unknown error"));
3634 my ($acl) = $rv->all_entries;
3636 foreach my $av ($acl->get_value(
3637 'webminAclEntry')) {
3638 my ($a, $v) = split(/=/, $av, 2);
3644 &disconnect_userdb($userdb, $dbh);
3647 # Read from local files
3648 &read_file_cached("$config_directory/$m/$g.gacl", \%rv);
3650 if (defined(&theme_get_module_acl)) {
3651 %rv = &theme_get_module_acl($g, $m, \%rv);
3656 =head2 save_module_acl(&acl, [user], [module], [never-update-group])
3658 Updates the acl hash for some user and module. The parameters are :
3660 =item acl - Hash reference for the new access control options, or undef to clear
3662 =item user - User to update, defaulting to the current user.
3664 =item module - Module to update, defaulting to the caller.
3666 =item never-update-group - Never update the user's group's ACL
3671 my $u = defined($_[1]) ? $_[1] : $base_remote_user;
3672 my $m = defined($_[2]) ? $_[2] : &get_module_name();
3673 if (!$_[3] && &foreign_check("acl")) {
3674 # Check if this user is a member of a group, and if he gets the
3675 # module from a group. If so, update its ACL as well
3676 &foreign_require("acl", "acl-lib.pl");
3678 foreach my $g (&acl::list_groups()) {
3679 if (&indexof($u, @{$g->{'members'}}) >= 0 &&
3680 &indexof($m, @{$g->{'modules'}}) >= 0) {
3686 &save_group_module_acl($_[0], $group->{'name'}, $m);
3690 my $userdb = &get_userdb_string();
3692 if ($userdb && ($u ne $base_remote_user || $remote_user_proto)) {
3693 # Look for this user in the user/group DB
3694 my ($dbh, $proto, $prefix, $args) = &connect_userdb($userdb);
3695 ref($dbh) || &error(&text('euserdbacl', $dbh));
3696 if ($proto eq "mysql" || $proto eq "postgresql") {
3697 # Find the user in the SQL DB
3698 my $cmd = $dbh->prepare(
3699 "select id from webmin_user where name = ?");
3700 $cmd && $cmd->execute($u) ||
3701 &error(&text('euserdbacl2', $dbh->errstr));
3702 my ($id) = $cmd->fetchrow();
3703 $foundindb = 1 if (defined($id));
3706 # Replace ACLs for user
3708 my $cmd = $dbh->prepare("delete from webmin_user_acl ".
3709 "where id = ? and module = ?");
3710 $cmd && $cmd->execute($id, $m) ||
3711 &error(&text('euserdbacl', $dbh->errstr));
3714 my $cmd = $dbh->prepare(
3715 "insert into webmin_user_acl ".
3716 "(id,module,attr,value) values (?,?,?,?)");
3717 $cmd || &error(&text('euserdbacl2',
3719 foreach my $a (keys %{$_[0]}) {
3720 $cmd->execute($id,$m,$a,$_[0]->{$a}) ||
3721 &error(&text('euserdbacl2',
3728 elsif ($proto eq "ldap") {
3729 # Find the user in LDAP
3730 my $rv = $dbh->search(
3732 filter => '(&(cn='.$u.')(objectClass='.
3733 $args->{'userclass'}.'))',
3735 if (!$rv || $rv->code) {
3736 &error(&text('euserdbacl',
3737 $rv ? $rv->error : "Unknown error"));
3739 my ($user) = $rv->all_entries;
3742 # Find the ACL sub-object for the module
3744 my $ldapm = $m || "global";
3745 my $rv = $dbh->search(
3746 base => $user->dn(),
3747 filter => '(cn='.$ldapm.')',
3749 if (!$rv || $rv->code) {
3750 &error(&text('euserdbacl',
3751 $rv ? $rv->error : "Unknown error"));
3753 my ($acl) = $rv->all_entries;
3756 foreach my $a (keys %{$_[0]}) {
3757 push(@al, $a."=".$_[0]->{$a});
3761 $rv = $dbh->modify($acl->dn(),
3762 replace => { "webminAclEntry", \@al });
3766 my @attrs = ( "cn", $ldapm,
3767 "objectClass", "webminAcl",
3768 "webminAclEntry", \@al );
3769 $rv = $dbh->add("cn=".$ldapm.",".$user->dn(),
3772 if (!$rv || $rv->code) {
3773 &error(&text('euserdbacl2',
3774 $rv ? $rv->error : "Unknown error"));
3778 &disconnect_userdb($userdb, $dbh);
3782 # Save ACL to local file
3783 if (!-d "$config_directory/$m") {
3784 mkdir("$config_directory/$m", 0755);
3787 &write_file("$config_directory/$m/$u.acl", $_[0]);
3790 &unlink_file("$config_directory/$m/$u.acl");
3795 =head2 save_group_module_acl(&acl, group, [module], [never-update-group])
3797 Updates the acl hash for some group and module. The parameters are :
3799 =item acl - Hash reference for the new access control options.
3801 =item group - Group name to update.
3803 =item module - Module to update, defaulting to the caller.
3805 =item never-update-group - Never update the parent group's ACL
3808 sub save_group_module_acl
3811 my $m = defined($_[2]) ? $_[2] : &get_module_name();
3812 if (!$_[3] && &foreign_check("acl")) {
3813 # Check if this group is a member of a group, and if it gets the
3814 # module from a group. If so, update the parent ACL as well
3815 &foreign_require("acl", "acl-lib.pl");
3817 foreach my $pg (&acl::list_groups()) {
3818 if (&indexof('@'.$g, @{$pg->{'members'}}) >= 0 &&
3819 &indexof($m, @{$pg->{'modules'}}) >= 0) {
3825 &save_group_module_acl($_[0], $group->{'name'}, $m);
3829 my $userdb = &get_userdb_string();
3832 # Look for this group in the user/group DB
3833 my ($dbh, $proto, $prefix, $args) = &connect_userdb($userdb);
3834 ref($dbh) || &error(&text('egroupdbacl', $dbh));
3835 if ($proto eq "mysql" || $proto eq "postgresql") {
3836 # Find the group in the SQL DB
3837 my $cmd = $dbh->prepare(
3838 "select id from webmin_group where name = ?");
3839 $cmd && $cmd->execute($g) ||
3840 &error(&text('egroupdbacl2', $dbh->errstr));
3841 my ($id) = $cmd->fetchrow();
3842 $foundindb = 1 if (defined($id));
3845 # Replace ACLs for group
3847 my $cmd = $dbh->prepare("delete from webmin_group_acl ".
3848 "where id = ? and module = ?");
3849 $cmd && $cmd->execute($id, $m) ||
3850 &error(&text('egroupdbacl', $dbh->errstr));
3853 my $cmd = $dbh->prepare(
3854 "insert into webmin_group_acl ".
3855 "(id,module,attr,value) values (?,?,?,?)");
3856 $cmd || &error(&text('egroupdbacl2',
3858 foreach my $a (keys %{$_[0]}) {
3859 $cmd->execute($id,$m,$a,$_[0]->{$a}) ||
3860 &error(&text('egroupdbacl2',
3867 elsif ($proto eq "ldap") {
3868 # Find the group in LDAP
3869 my $rv = $dbh->search(
3871 filter => '(&(cn='.$g.')(objectClass='.
3872 $args->{'groupclass'}.'))',
3874 if (!$rv || $rv->code) {
3875 &error(&text('egroupdbacl',
3876 $rv ? $rv->error : "Unknown error"));
3878 my ($group) = $rv->all_entries;
3880 my $ldapm = $m || "global";
3882 # Find the ACL sub-object for the module
3884 my $rv = $dbh->search(
3885 base => $group->dn(),
3886 filter => '(cn='.$ldapm.')',
3888 if (!$rv || $rv->code) {
3889 &error(&text('egroupdbacl',
3890 $rv ? $rv->error : "Unknown error"));
3892 my ($acl) = $rv->all_entries;
3895 foreach my $a (keys %{$_[0]}) {
3896 push(@al, $a."=".$_[0]->{$a});
3900 $rv = $dbh->modify($acl->dn(),
3901 replace => { "webminAclEntry", \@al });
3905 my @attrs = ( "cn", $ldapm,
3906 "objectClass", "webminAcl",
3907 "webminAclEntry", \@al );
3908 $rv = $dbh->add("cn=".$ldapm.",".$group->dn(),
3911 if (!$rv || $rv->code) {
3912 &error(&text('egroupdbacl2',
3913 $rv ? $rv->error : "Unknown error"));
3917 &disconnect_userdb($userdb, $dbh);
3921 # Save ACL to local file
3922 if (!-d "$config_directory/$m") {
3923 mkdir("$config_directory/$m", 0755);
3926 &write_file("$config_directory/$m/$g.gacl", $_[0]);
3929 &unlink_file("$config_directory/$m/$g.gacl");
3936 This function must be called by all Webmin CGI scripts, either directly or
3937 indirectly via a per-module lib.pl file. It performs a number of initialization
3938 and housekeeping tasks, such as working out the module name, checking that the
3939 current user has access to the module, and populating global variables. Some
3940 of the variables set include :
3942 =item $config_directory - Base Webmin config directory, typically /etc/webmin
3944 =item $var_directory - Base logs directory, typically /var/webmin
3946 =item %config - Per-module configuration.
3948 =item %gconfig - Global configuration.
3950 =item $scriptname - Base name of the current perl script.
3952 =item $module_name - The name of the current module.
3954 =item $module_config_directory - The config directory for this module.
3956 =item $module_config_file - The config file for this module.
3958 =item $module_root_directory - This module's code directory.
3960 =item $webmin_logfile - The detailed logfile for webmin.
3962 =item $remote_user - The actual username used to login to webmin.
3964 =item $base_remote_user - The username whose permissions are in effect.
3966 =item $current_theme - The theme currently in use.
3968 =item $root_directory - The first root directory of this webmin install.
3970 =item @root_directories - All root directories for this webmin install.
3975 # Record first process ID that called this, so we know when it exited to clean
3977 $main::initial_process_id ||= $$;
3979 # Configuration and spool directories
3980 if (!defined($ENV{'WEBMIN_CONFIG'})) {
3981 die "WEBMIN_CONFIG not set";
3983 $config_directory = $ENV{'WEBMIN_CONFIG'};
3984 if (!defined($ENV{'WEBMIN_VAR'})) {
3985 open(VARPATH, "$config_directory/var-path");
3986 chop($var_directory = <VARPATH>);
3990 $var_directory = $ENV{'WEBMIN_VAR'};
3992 $main::http_cache_directory = $ENV{'WEBMIN_VAR'}."/cache";
3993 $main::default_debug_log_file = $ENV{'WEBMIN_VAR'}."/webmin.debug";
3995 if ($ENV{'SESSION_ID'}) {
3996 # Hide this variable from called programs, but keep it for internal use
3997 $main::session_id = $ENV{'SESSION_ID'};
3998 delete($ENV{'SESSION_ID'});
4000 if ($ENV{'REMOTE_PASS'}) {
4001 # Hide the password too
4002 $main::remote_pass = $ENV{'REMOTE_PASS'};
4003 delete($ENV{'REMOTE_PASS'});
4006 if ($> == 0 && $< != 0 && !$ENV{'FOREIGN_MODULE_NAME'}) {
4007 # Looks like we are running setuid, but the real UID hasn't been set.
4008 # Do so now, so that executed programs don't get confused
4013 # Read the webmin global config file. This contains the OS type and version,
4014 # OS specific configuration and global options such as proxy servers
4015 $config_file = "$config_directory/config";
4017 &read_file_cached($config_file, \%gconfig);
4018 $null_file = $gconfig{'os_type'} eq 'windows' ? "NUL" : "/dev/null";
4019 $path_separator = $gconfig{'os_type'} eq 'windows' ? ';' : ':';
4021 # Work out of this is a web, command line or cron job
4022 if (!$main::webmin_script_type) {
4023 if ($ENV{'SCRIPT_NAME'}) {
4025 $main::webmin_script_type = 'web';
4028 # Cron jobs have no TTY
4029 if ($gconfig{'os_type'} eq 'windows' ||
4030 open(DEVTTY, ">/dev/tty")) {
4031 $main::webmin_script_type = 'cmd';
4035 $main::webmin_script_type = 'cron';
4040 # If debugging is enabled, open the debug log
4041 if ($gconfig{'debug_enabled'} && !$main::opened_debug_log++) {
4042 my $dlog = $gconfig{'debug_file'} || $main::default_debug_log_file;
4043 if ($gconfig{'debug_size'}) {
4044 my @st = stat($dlog);
4045 if ($st[7] > $gconfig{'debug_size'}) {
4046 rename($dlog, $dlog.".0");
4049 open(main::DEBUGLOG, ">>$dlog");
4050 $main::opened_debug_log = 1;
4052 if ($gconfig{'debug_what_start'}) {
4053 my $script_name = $0 =~ /([^\/]+)$/ ? $1 : '-';
4054 $main::debug_log_start_time = time();
4055 &webmin_debug_log("START", "script=$script_name");
4056 $main::debug_log_start_module = $module_name;
4060 # Set PATH and LD_LIBRARY_PATH
4061 if ($gconfig{'path'}) {
4062 if ($gconfig{'syspath'}) {
4064 $ENV{'PATH'} = $gconfig{'path'};
4068 $ENV{'PATH'} = $gconfig{'path'}.$path_separator.$ENV{'PATH'};
4071 $ENV{$gconfig{'ld_env'}} = $gconfig{'ld_path'} if ($gconfig{'ld_env'});
4073 # Set http_proxy and ftp_proxy environment variables, based on Webmin settings
4074 if ($gconfig{'http_proxy'}) {
4075 $ENV{'http_proxy'} = $gconfig{'http_proxy'};
4077 if ($gconfig{'ftp_proxy'}) {
4078 $ENV{'ftp_proxy'} = $gconfig{'ftp_proxy'};
4080 if ($gconfig{'noproxy'}) {
4081 $ENV{'no_proxy'} = $gconfig{'noproxy'};
4084 # Find all root directories
4086 if (&get_miniserv_config(\%miniserv)) {
4087 @root_directories = ( $miniserv{'root'} );
4088 for($i=0; defined($miniserv{"extraroot_$i"}); $i++) {
4089 push(@root_directories, $miniserv{"extraroot_$i"});
4093 # Work out which module we are in, and read the per-module config file
4094 $0 =~ s/\\/\//g; # Force consistent path on Windows
4095 if (defined($ENV{'FOREIGN_MODULE_NAME'})) {
4096 # In a foreign call - use the module name given
4097 $root_directory = $ENV{'FOREIGN_ROOT_DIRECTORY'};
4098 $module_name = $ENV{'FOREIGN_MODULE_NAME'};
4099 @root_directories = ( $root_directory ) if (!@root_directories);
4101 elsif ($ENV{'SCRIPT_NAME'}) {
4102 my $sn = $ENV{'SCRIPT_NAME'};
4103 $sn =~ s/^$gconfig{'webprefix'}//
4104 if (!$gconfig{'webprefixnoredir'});
4105 if ($sn =~ /^\/([^\/]+)\//) {
4106 # Get module name from CGI path
4109 if ($ENV{'SERVER_ROOT'}) {
4110 $root_directory = $ENV{'SERVER_ROOT'};
4112 elsif ($ENV{'SCRIPT_FILENAME'}) {
4113 $root_directory = $ENV{'SCRIPT_FILENAME'};
4114 $root_directory =~ s/$sn$//;
4116 @root_directories = ( $root_directory ) if (!@root_directories);
4119 # Get root directory from miniserv.conf, and deduce module name from $0
4120 $root_directory = $root_directories[0];
4122 foreach my $r (@root_directories) {
4123 if ($0 =~ /^$r\/([^\/]+)\/[^\/]+$/i) {
4124 # Under a module directory
4129 elsif ($0 =~ /^$root_directory\/[^\/]+$/i) {
4135 &error("Script was not run with full path (failed to find $0 under $root_directory)") if (!$rok);
4138 # Set the umask based on config
4139 if ($gconfig{'umask'} && !$main::umask_already++) {
4140 umask(oct($gconfig{'umask'}));
4143 # If this is a cron job or other background task, set the nice level
4144 if (!$main::nice_already && $main::webmin_script_type eq 'cron') {
4146 if ($gconfig{'nice'}) {
4147 eval 'POSIX::nice($gconfig{\'nice\'});';
4150 # Set IO scheduling class and priority
4151 if ($gconfig{'sclass'} ne '' || $gconfig{'sprio'} ne '') {
4153 $cmd .= " -c ".quotemeta($gconfig{'sclass'})
4154 if ($gconfig{'sclass'} ne '');
4155 $cmd .= " -n ".quotemeta($gconfig{'sprio'})
4156 if ($gconfig{'sprio'} ne '');
4158 &execute_command("$cmd >/dev/null 2>&1");
4161 $main::nice_already++;
4164 my $u = $ENV{'BASE_REMOTE_USER'} || $ENV{'REMOTE_USER'};
4165 $base_remote_user = $u;
4166 $remote_user = $ENV{'REMOTE_USER'};
4168 # Work out if user is definitely in the DB, and if so get his attrs
4169 $remote_user_proto = $ENV{"REMOTE_USER_PROTO"};
4170 %remote_user_attrs = ( );
4171 if ($remote_user_proto) {
4172 my $userdb = &get_userdb_string();
4173 my ($dbh, $proto, $prefix, $args) =
4174 $userdb ? &connect_userdb($userdb) : ( );
4176 if ($proto eq "mysql" || $proto eq "postgresql") {
4177 # Read attrs from SQL
4178 my $cmd = $dbh->prepare("select webmin_user_attr.attr,webmin_user_attr.value from webmin_user_attr,webmin_user where webmin_user_attr.id = webmin_user.id and webmin_user.name = ?");
4179 if ($cmd && $cmd->execute($base_remote_user)) {
4180 while(my ($attr, $value) = $cmd->fetchrow()) {
4181 $remote_user_attrs{$attr} = $value;
4186 elsif ($proto eq "ldap") {
4187 # Read attrs from LDAP
4188 my $rv = $dbh->search(
4190 filter => '(&(cn='.$base_remote_user.')'.
4192 $args->{'userclass'}.'))',
4194 my ($u) = $rv && !$rv->code ? $rv->all_entries : ( );
4196 foreach $la ($u->get_value('webminAttr')) {
4197 my ($attr, $value) = split(/=/, $la, 2);
4198 $remote_user_attrs{$attr} = $value;
4202 &disconnect_userdb($userdb, $dbh);
4207 # Find and load the configuration file for this module
4208 my (@ruinfo, $rgroup);
4209 $module_config_directory = "$config_directory/$module_name";
4210 if (&get_product_name() eq "usermin" &&
4211 -r "$module_config_directory/config.$remote_user") {
4213 $module_config_file = "$module_config_directory/config.$remote_user";
4215 elsif (&get_product_name() eq "usermin" &&
4216 (@ruinfo = getpwnam($remote_user)) &&
4217 ($rgroup = getgrgid($ruinfo[3])) &&
4218 -r "$module_config_directory/config.\@$rgroup") {
4219 # Based on group name
4220 $module_config_file = "$module_config_directory/config.\@$rgroup";
4224 $module_config_file = "$module_config_directory/config";
4227 &read_file_cached($module_config_file, \%config);
4229 # Fix up windows-specific substitutions in values
4230 foreach my $k (keys %config) {
4231 if ($config{$k} =~ /\$\{systemroot\}/) {
4232 my $root = &get_windows_root();
4233 $config{$k} =~ s/\$\{systemroot\}/$root/g;
4238 # Record the initial module
4239 $main::initial_module_name ||= $module_name;
4241 # Set some useful variables
4243 $current_themes = $ENV{'MOBILE_DEVICE'} && defined($gconfig{'mobile_theme'}) ?
4244 $gconfig{'mobile_theme'} :
4245 defined($remote_user_attrs{'theme'}) ?
4246 $remote_user_attrs{'theme'} :
4247 defined($gconfig{'theme_'.$remote_user}) ?
4248 $gconfig{'theme_'.$remote_user} :
4249 defined($gconfig{'theme_'.$base_remote_user}) ?
4250 $gconfig{'theme_'.$base_remote_user} :
4252 @current_themes = split(/\s+/, $current_themes);
4253 $current_theme = $current_themes[0];
4254 @theme_root_directories = map { "$root_directory/$_" } @current_themes;
4255 $theme_root_directory = $theme_root_directories[0];
4256 @theme_configs = ( );
4257 foreach my $troot (@theme_root_directories) {
4259 &read_file_cached("$troot/config", \%onetconfig);
4260 &read_file_cached("$troot/config", \%tconfig);
4261 push(@theme_configs, \%onetconfig);
4263 $tb = defined($tconfig{'cs_header'}) ? "bgcolor=#$tconfig{'cs_header'}" :
4264 defined($gconfig{'cs_header'}) ? "bgcolor=#$gconfig{'cs_header'}" :
4266 $cb = defined($tconfig{'cs_table'}) ? "bgcolor=#$tconfig{'cs_table'}" :
4267 defined($gconfig{'cs_table'}) ? "bgcolor=#$gconfig{'cs_table'}" :
4269 $tb .= ' '.$tconfig{'tb'} if ($tconfig{'tb'});
4270 $cb .= ' '.$tconfig{'cb'} if ($tconfig{'cb'});
4271 if ($tconfig{'preload_functions'}) {
4272 # Force load of theme functions right now, if requested
4273 &load_theme_library();
4275 if ($tconfig{'oofunctions'} && !$main::loaded_theme_oo_library++) {
4276 # Load the theme's Webmin:: package classes
4277 do "$theme_root_directory/$tconfig{'oofunctions'}";
4282 $webmin_logfile = $gconfig{'webmin_log'} ? $gconfig{'webmin_log'}
4283 : "$var_directory/webmin.log";
4285 # Load language strings into %text
4286 my @langs = &list_languages();
4288 if ($gconfig{'acceptlang'}) {
4289 foreach my $a (split(/,/, $ENV{'HTTP_ACCEPT_LANGUAGE'})) {
4290 my ($al) = grep { $_->{'lang'} eq $a } @langs;
4292 $accepted_lang = $al->{'lang'};
4297 $current_lang = $force_lang ? $force_lang :
4298 $accepted_lang ? $accepted_lang :
4299 $remote_user_attrs{'lang'} ? $remote_user_attrs{'lang'} :
4300 $gconfig{"lang_$remote_user"} ? $gconfig{"lang_$remote_user"} :
4301 $gconfig{"lang_$base_remote_user"} ? $gconfig{"lang_$base_remote_user"} :
4302 $gconfig{"lang"} ? $gconfig{"lang"} : $default_lang;
4303 foreach my $l (@langs) {
4304 $current_lang_info = $l if ($l->{'lang'} eq $current_lang);
4306 @lang_order_list = &unique($default_lang,
4307 split(/:/, $current_lang_info->{'fallback'}),
4309 %text = &load_language($module_name);
4310 %text || &error("Failed to determine Webmin root from SERVER_ROOT, SCRIPT_FILENAME or the full command line");
4312 # Get the %module_info for this module
4314 my ($mi) = grep { $_->{'dir'} eq $module_name }
4315 &get_all_module_infos(2);
4316 %module_info = %$mi;
4317 $module_root_directory = &module_root_directory($module_name);
4320 if ($module_name && !$main::no_acl_check &&
4321 !defined($ENV{'FOREIGN_MODULE_NAME'})) {
4322 # Check if the HTTP user can access this module
4323 if (!&foreign_available($module_name)) {
4324 if (!&foreign_check($module_name)) {
4325 &error(&text('emodulecheck',
4326 "<i>$module_info{'desc'}</i>"));
4329 &error(&text('emodule', "<i>$u</i>",
4330 "<i>$module_info{'desc'}</i>"));
4333 $main::no_acl_check++;
4336 # Check the Referer: header for nasty redirects
4337 my @referers = split(/\s+/, $gconfig{'referers'});
4339 my $r = $ENV{'HTTP_REFERER'};
4340 if ($r =~ /^(http|https|ftp):\/\/([^:\/]+:[^@\/]+@)?\[([^\]]+)\]/ ||
4341 $r =~ /^(http|https|ftp):\/\/([^:\/]+:[^@\/]+@)?([^\/:@]+)/) {
4344 my $http_host = $ENV{'HTTP_HOST'};
4345 $http_host =~ s/:\d+$//;
4346 $http_host =~ s/^\[(\S+)\]$/$1/;
4347 my $unsafe_index = $unsafe_index_cgi ||
4348 &get_module_variable('$unsafe_index_cgi');
4350 ($ENV{'SCRIPT_NAME'} !~ /^\/(index.cgi)?$/ || $unsafe_index) &&
4351 ($ENV{'SCRIPT_NAME'} !~ /^\/([a-z0-9\_\-]+)\/(index.cgi)?$/i ||
4353 $0 !~ /(session_login|pam_login)\.cgi$/ && !$gconfig{'referer'} &&
4354 $ENV{'MINISERV_CONFIG'} && !$main::no_referers_check &&
4355 $ENV{'HTTP_USER_AGENT'} !~ /^Webmin/i &&
4356 ($referer_site && $referer_site ne $http_host &&
4357 &indexof($referer_site, @referers) < 0 ||
4358 !$referer_site && $gconfig{'referers_none'}) &&
4359 !$trust_unknown_referers &&
4360 !&get_module_variable('$trust_unknown_referers')) {
4361 # Looks like a link from elsewhere .. show an error
4362 &header($text{'referer_title'}, "", undef, 0, 1, 1);
4364 $prot = lc($ENV{'HTTPS'}) eq 'on' ? "https" : "http";
4365 my $url = "<tt>".&html_escape("$prot://$ENV{'HTTP_HOST'}$ENV{'REQUEST_URI'}")."</tt>";
4366 if ($referer_site) {
4368 print &text('referer_warn',
4369 "<tt>".&html_escape($r)."</tt>", $url);
4371 print &text('referer_fix1', &html_escape($http_host)),"<p>\n";
4372 print &text('referer_fix2', &html_escape($http_host)),"<p>\n";
4375 # No referer info given
4376 print &text('referer_warn_unknown', $url),"<p>\n";
4377 print &text('referer_fix1u'),"<p>\n";
4378 print &text('referer_fix2u'),"<p>\n";
4382 &footer("/", $text{'index'});
4385 $main::no_referers_check++;
4386 $main::completed_referers_check++;
4388 # Call theme post-init
4389 if (defined(&theme_post_init_config)) {
4390 &theme_post_init_config(@_);
4393 # Record that we have done the calling library in this package
4394 my ($callpkg, $lib) = caller();
4396 $main::done_foreign_require{$callpkg,$lib} = 1;
4398 # If a licence checking is enabled, do it now
4399 if ($gconfig{'licence_module'} && !$main::done_licence_module_check &&
4400 &foreign_check($gconfig{'licence_module'}) &&
4401 -r "$root_directory/$gconfig{'licence_module'}/licence_check.pl") {
4402 my $oldpwd = &get_current_dir();
4403 $main::done_licence_module_check++;
4404 $main::licence_module = $gconfig{'licence_module'};
4405 &foreign_require($main::licence_module, "licence_check.pl");
4406 ($main::licence_status, $main::licence_message) =
4407 &foreign_call($main::licence_module, "check_licence");
4411 # Export global variables to caller
4412 if ($main::export_to_caller) {
4413 foreach my $v ('$config_file', '%gconfig', '$null_file',
4414 '$path_separator', '@root_directories',
4415 '$root_directory', '$module_name',
4416 '$base_remote_user', '$remote_user',
4417 '$remote_user_proto', '%remote_user_attrs',
4418 '$module_config_directory', '$module_config_file',
4419 '%config', '@current_themes', '$current_theme',
4420 '@theme_root_directories', '$theme_root_directory',
4421 '%tconfig','@theme_configs', '$tb', '$cb', '$scriptname',
4422 '$webmin_logfile', '$current_lang',
4423 '$current_lang_info', '@lang_order_list', '%text',
4424 '%module_info', '$module_root_directory') {
4425 my ($vt, $vn) = split('', $v, 2);
4426 eval "${vt}${callpkg}::${vn} = ${vt}${vn}";
4433 =head2 load_language([module], [directory])
4435 Returns a hashtable mapping text codes to strings in the appropriate language,
4436 based on the $current_lang global variable, which is in turn set based on
4437 the Webmin user's selection. The optional module parameter tells the function
4438 which module to load strings for, and defaults to the calling module. The
4439 optional directory parameter can be used to load strings from a directory
4442 In regular module development you will never need to call this function
4443 directly, as init_config calls it for you, and places the module's strings
4444 into the %text hash.
4450 my $root = $root_directory;
4451 my $ol = $gconfig{'overlang'};
4452 my ($dir) = ($_[1] || "lang");
4454 # Read global lang files
4455 foreach my $o (@lang_order_list) {
4456 my $ok = &read_file_cached_with_stat("$root/$dir/$o", \%text);
4457 return () if (!$ok && $o eq $default_lang);
4460 foreach my $o (@lang_order_list) {
4461 &read_file_cached("$root/$ol/$o", \%text);
4464 &read_file_cached("$config_directory/custom-lang", \%text);
4465 foreach my $o (@lang_order_list) {
4466 next if ($o eq "en");
4467 &read_file_cached("$config_directory/custom-lang.$o", \%text);
4469 my $norefs = $text{'__norefs'};
4472 # Read module's lang files
4473 delete($text{'__norefs'});
4474 my $mdir = &module_root_directory($_[0]);
4475 foreach my $o (@lang_order_list) {
4476 &read_file_cached_with_stat("$mdir/$dir/$o", \%text);
4479 foreach my $o (@lang_order_list) {
4480 &read_file_cached("$mdir/$ol/$o", \%text);
4483 &read_file_cached("$config_directory/$_[0]/custom-lang", \%text);
4484 foreach my $o (@lang_order_list) {
4485 next if ($o eq "en");
4486 &read_file_cached("$config_directory/$_[0]/custom-lang.$o",
4489 $norefs = $text{'__norefs'} if ($norefs);
4492 # Replace references to other strings
4494 foreach $k (keys %text) {
4495 $text{$k} =~ s/\$(\{([^\}]+)\}|([A-Za-z0-9\.\-\_]+))/text_subs($2 || $3,\%text)/ge;
4499 if (defined(&theme_load_language)) {
4500 &theme_load_language(\%text, $_[0]);
4505 =head2 text_subs(string)
4507 Used internally by load_language to expand $code substitutions in language
4513 if (substr($_[0], 0, 8) eq "include:") {
4516 open(INCLUDE, substr($_[0], 8));
4524 my $t = $_[1]->{$_[0]};
4525 return defined($t) ? $t : '$'.$_[0];
4529 =head2 text(message, [substitute]+)
4531 Returns a translated message from %text, but with $1, $2, etc.. replaced with
4532 the substitute parameters. This makes it easy to use strings with placeholders
4533 that get replaced with programmatically generated text. For example :
4535 print &text('index_hello', $remote_user),"<p>\n";
4540 my $t = &get_module_variable('%text', 1);
4541 my $rv = exists($t->{$_[0]}) ? $t->{$_[0]} : $text{$_[0]};
4542 for(my $i=1; $i<@_; $i++) {
4543 $rv =~ s/\$$i/$_[$i]/g;
4548 =head2 encode_base64(string)
4550 Encodes a string into base64 format, for use in MIME email or HTTP
4551 authorization headers.
4557 pos($_[0]) = 0; # ensure start at the beginning
4558 while ($_[0] =~ /(.{1,57})/gs) {
4559 $res .= substr(pack('u57', $1), 1)."\n";
4562 $res =~ tr|\` -_|AA-Za-z0-9+/|;
4563 my $padding = (3 - length($_[0]) % 3) % 3;
4564 $res =~ s/.{$padding}$/'=' x $padding/e if ($padding);
4568 =head2 decode_base64(string)
4570 Converts a base64-encoded string into plain text. The opposite of encode_base64.
4577 $str =~ tr|A-Za-z0-9+=/||cd; # remove non-base64 chars
4578 if (length($str) % 4) {
4581 $str =~ s/=+$//; # remove padding
4582 $str =~ tr|A-Za-z0-9+/| -_|; # convert to uuencoded format
4583 while ($str =~ /(.{1,60})/gs) {
4584 my $len = chr(32 + length($1)*3/4); # compute length byte
4585 $res .= unpack("u", $len . $1 ); # uudecode
4590 =head2 get_module_info(module, [noclone], [forcache])
4592 Returns a hash containg details of the given module. Some useful keys are :
4594 =item dir - The module directory, like sendmail.
4596 =item desc - Human-readable description, in the current users' language.
4598 =item version - Optional module version number.
4600 =item os_support - List of supported operating systems and versions.
4602 =item category - Category on Webmin's left menu, like net.
4607 return () if ($_[0] =~ /^\./);
4608 my (%rv, $clone, $o);
4609 my $mdir = &module_root_directory($_[0]);
4610 &read_file_cached("$mdir/module.info", \%rv) || return ();
4612 # A clone is a module that links to another directory under the root
4613 foreach my $r (@root_directories) {
4614 if (&is_under_directory($r, $mdir)) {
4620 foreach $o (@lang_order_list) {
4621 $rv{"desc"} = $rv{"desc_$o"} if ($rv{"desc_$o"});
4622 $rv{"longdesc"} = $rv{"longdesc_$o"} if ($rv{"longdesc_$o"});
4624 if ($clone && !$_[1] && $config_directory) {
4625 $rv{'clone'} = $rv{'desc'};
4626 &read_file("$config_directory/$_[0]/clone", \%rv);
4629 my %module_categories;
4630 &read_file_cached("$config_directory/webmin.cats", \%module_categories);
4631 my $pn = &get_product_name();
4632 if (defined($rv{'category_'.$pn})) {
4633 # Can override category for webmin/usermin
4634 $rv{'category'} = $rv{'category_'.$pn};
4636 $rv{'realcategory'} = $rv{'category'};
4637 $rv{'category'} = $module_categories{$_[0]}
4638 if (defined($module_categories{$_[0]}));
4640 # Apply description overrides
4641 $rv{'realdesc'} = $rv{'desc'};
4643 &read_file_cached("$config_directory/webmin.descs", \%descs);
4644 if ($descs{$_[0]}) {
4645 $rv{'desc'} = $descs{$_[0]};
4647 foreach my $o (@lang_order_list) {
4648 my $ov = $descs{$_[0]." ".$o} || $descs{$_[0]."_".$o};
4649 $rv{'desc'} = $ov if ($ov);
4653 # Apply per-user description overridde
4654 my %gaccess = &get_module_acl(undef, "");
4655 if ($gaccess{'desc_'.$_[0]}) {
4656 $rv{'desc'} = $gaccess{'desc_'.$_[0]};
4660 if ($rv{'longdesc'}) {
4661 # All standard modules have an index.cgi
4662 $rv{'index_link'} = 'index.cgi';
4665 # Call theme-specific override function
4666 if (defined(&theme_get_module_info)) {
4667 %rv = &theme_get_module_info(\%rv, $_[0], $_[1], $_[2]);
4673 =head2 get_all_module_infos(cachemode)
4675 Returns a list contains the information on all modules in this webmin
4676 install, including clones. Uses caching to reduce the number of module.info
4677 files that need to be read. Each element of the array is a hash reference
4678 in the same format as returned by get_module_info. The cache mode flag can be :
4679 0 = read and write, 1 = don't read or write, 2 = read only
4682 sub get_all_module_infos
4686 # Is the cache out of date? (ie. have any of the root's changed?)
4687 my $cache_file = "$config_directory/module.infos.cache";
4689 if (&read_file_cached($cache_file, \%cache)) {
4690 foreach my $r (@root_directories) {
4692 if ($st[9] != $cache{'mtime_'.$r}) {
4702 if ($_[0] != 1 && !$changed && $cache{'lang'} eq $current_lang) {
4703 # Can use existing module.info cache
4705 foreach my $k (keys %cache) {
4706 if ($k =~ /^(\S+) (\S+)$/) {
4707 $mods{$1}->{$2} = $cache{$k};
4710 @rv = map { $mods{$_} } (keys %mods) if (%mods);
4713 # Need to rebuild cache
4715 foreach my $r (@root_directories) {
4717 foreach my $m (readdir(DIR)) {
4718 next if ($m =~ /^(config-|\.)/ || $m =~ /\.(cgi|pl)$/);
4719 my %minfo = &get_module_info($m, 0, 1);
4720 next if (!%minfo || !$minfo{'dir'});
4722 foreach $k (keys %minfo) {
4723 $cache{"${m} ${k}"} = $minfo{$k};
4728 $cache{'mtime_'.$r} = $st[9];
4730 $cache{'lang'} = $current_lang;
4731 if (!$_[0] && $< == 0 && $> == 0) {
4733 # Don't fail if cache write fails
4734 local $main::error_must_die = 1;
4735 &write_file($cache_file, \%cache);
4740 # Override descriptions for modules for current user
4741 my %gaccess = &get_module_acl(undef, "");
4742 foreach my $m (@rv) {
4743 if ($gaccess{"desc_".$m->{'dir'}}) {
4744 $m->{'desc'} = $gaccess{"desc_".$m->{'dir'}};
4748 # Apply installed flags
4750 &read_file_cached("$config_directory/installed.cache", \%installed);
4751 foreach my $m (@rv) {
4752 $m->{'installed'} = $installed{$m->{'dir'}};
4758 =head2 get_theme_info(theme)
4760 Returns a hash containing a theme's details, taken from it's theme.info file.
4761 Some useful keys are :
4763 =item dir - The theme directory, like blue-theme.
4765 =item desc - Human-readable description, in the current users' language.
4767 =item version - Optional module version number.
4769 =item os_support - List of supported operating systems and versions.
4774 return () if ($_[0] =~ /^\./);
4776 my $tdir = &module_root_directory($_[0]);
4777 &read_file("$tdir/theme.info", \%rv) || return ();
4778 foreach my $o (@lang_order_list) {
4779 $rv{"desc"} = $rv{"desc_$o"} if ($rv{"desc_$o"});
4785 =head2 list_languages
4787 Returns an array of supported languages, taken from Webmin's os_list.txt file.
4788 Each is a hash reference with the following keys :
4790 =item lang - The short language code, like es for Spanish.
4792 =item desc - A human-readable description, in English.
4794 =item charset - An optional character set to use when displaying the language.
4796 =item titles - Set to 1 only if Webmin has title images for the language.
4798 =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.
4803 if (!@main::list_languages_cache) {
4806 open(LANG, "$root_directory/lang_list.txt");
4808 if (/^(\S+)\s+(.*)/) {
4809 my $l = { 'desc' => $2 };
4810 foreach $o (split(/,/, $1)) {
4811 if ($o =~ /^([^=]+)=(.*)$/) {
4815 $l->{'index'} = scalar(@rv);
4816 push(@main::list_languages_cache, $l);
4820 @main::list_languages_cache = sort { $a->{'desc'} cmp $b->{'desc'} }
4821 @main::list_languages_cache;
4823 return @main::list_languages_cache;
4826 =head2 read_env_file(file, &hash, [include-commented])
4828 Similar to Webmin's read_file function, but handles files containing shell
4829 environment variables formatted like :
4834 The file parameter is the full path to the file to read, and hash a Perl hash
4835 ref to read names and values into.
4841 &open_readfile(FILE, $_[0]) || return 0;
4844 # Remove start of line comments
4848 if (/^\s*(export\s*)?([A-Za-z0-9_\.]+)\s*=\s*"(.*)"/i ||
4849 /^\s*(export\s*)?([A-Za-z0-9_\.]+)\s*=\s*'(.*)'/i ||
4850 /^\s*(export\s*)?([A-Za-z0-9_\.]+)\s*=\s*(.*)/i) {
4858 =head2 write_env_file(file, &hash, [export])
4860 Writes out a hash to a file in name='value' format, suitable for use in a shell
4861 script. The parameters are :
4863 =item file - Full path for a file to write to
4865 =item hash - Hash reference of names and values to write.
4867 =item export - If set to 1, preceed each variable setting with the word 'export'.
4872 my $exp = $_[2] ? "export " : "";
4873 &open_tempfile(FILE, ">$_[0]");
4874 foreach my $k (keys %{$_[1]}) {
4875 my $v = $_[1]->{$k};
4876 if ($v =~ /^\S+$/) {
4877 &print_tempfile(FILE, "$exp$k=$v\n");
4880 &print_tempfile(FILE, "$exp$k=\"$v\"\n");
4883 &close_tempfile(FILE);
4886 =head2 lock_file(filename, [readonly], [forcefile])
4888 Lock a file for exclusive access. If the file is already locked, spin
4889 until it is freed. Uses a .lock file, which is not 100% reliable, but seems
4890 to work OK. The parameters are :
4892 =item filename - File or directory to lock.
4894 =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.
4896 =item forcefile - Force the file to be considered as a real file and not a symlink for Webmin actions logging purposes.
4901 my $realfile = &translate_filename($_[0]);
4902 return 0 if (!$_[0] || defined($main::locked_file_list{$realfile}));
4903 my $no_lock = !&can_lock_file($realfile);
4904 my $lock_tries_count = 0;
4907 if (!$no_lock && open(LOCKING, "$realfile.lock")) {
4912 if ($no_lock || !$pid || !kill(0, $pid) || $pid == $$) {
4915 # Create the .lock file
4916 open(LOCKING, ">$realfile.lock") || return 0;
4917 my $lck = eval "flock(LOCKING, 2+4)";
4919 # Lock of lock file failed! Wait till later
4922 print LOCKING $$,"\n";
4923 eval "flock(LOCKING, 8)";
4926 $main::locked_file_list{$realfile} = int($_[1]);
4927 push(@main::temporary_files, "$realfile.lock");
4928 if (($gconfig{'logfiles'} || $gconfig{'logfullfiles'}) &&
4929 !&get_module_variable('$no_log_file_changes') &&
4931 # Grab a copy of this file for later diffing
4933 $main::locked_file_data{$realfile} = undef;
4935 $main::locked_file_type{$realfile} = 1;
4936 $main::locked_file_data{$realfile} = '';
4938 elsif (!$_[2] && ($lnk = readlink($realfile))) {
4939 $main::locked_file_type{$realfile} = 2;
4940 $main::locked_file_data{$realfile} = $lnk;
4942 elsif (open(ORIGFILE, $realfile)) {
4943 $main::locked_file_type{$realfile} = 0;
4944 $main::locked_file_data{$realfile} = '';
4947 $main::locked_file_data{$realfile} .=$_;
4956 if ($lock_tries_count++ > 5*60) {
4957 # Give up after 5 minutes
4958 &error(&text('elock_tries', "<tt>$realfile</tt>", 5));
4964 =head2 unlock_file(filename)
4966 Release a lock on a file taken out by lock_file. If Webmin actions logging of
4967 file changes is enabled, then at unlock file a diff will be taken between the
4968 old and new contents, and stored under /var/webmin/diffs when webmin_log is
4969 called. This can then be viewed in the Webmin Actions Log module.
4974 my $realfile = &translate_filename($_[0]);
4975 return if (!$_[0] || !defined($main::locked_file_list{$realfile}));
4976 unlink("$realfile.lock") if (&can_lock_file($realfile));
4977 delete($main::locked_file_list{$realfile});
4978 if (exists($main::locked_file_data{$realfile})) {
4979 # Diff the new file with the old
4981 my $lnk = readlink($realfile);
4982 my $type = -d _ ? 1 : $lnk ? 2 : 0;
4983 my $oldtype = $main::locked_file_type{$realfile};
4984 my $new = !defined($main::locked_file_data{$realfile});
4985 if ($new && !-e _) {
4986 # file doesn't exist, and never did! do nothing ..
4988 elsif ($new && $type == 1 || !$new && $oldtype == 1) {
4989 # is (or was) a directory ..
4990 if (-d _ && !defined($main::locked_file_data{$realfile})) {
4991 push(@main::locked_file_diff,
4992 { 'type' => 'mkdir', 'object' => $realfile });
4994 elsif (!-d _ && defined($main::locked_file_data{$realfile})) {
4995 push(@main::locked_file_diff,
4996 { 'type' => 'rmdir', 'object' => $realfile });
4999 elsif ($new && $type == 2 || !$new && $oldtype == 2) {
5000 # is (or was) a symlink ..
5001 if ($lnk && !defined($main::locked_file_data{$realfile})) {
5002 push(@main::locked_file_diff,
5003 { 'type' => 'symlink', 'object' => $realfile,
5006 elsif (!$lnk && defined($main::locked_file_data{$realfile})) {
5007 push(@main::locked_file_diff,
5008 { 'type' => 'unsymlink', 'object' => $realfile,
5009 'data' => $main::locked_file_data{$realfile} });
5011 elsif ($lnk ne $main::locked_file_data{$realfile}) {
5012 push(@main::locked_file_diff,
5013 { 'type' => 'resymlink', 'object' => $realfile,
5018 # is a file, or has changed type?!
5019 my ($diff, $delete_file);
5020 my $type = "modify";
5022 open(NEWFILE, ">$realfile");
5027 if (!defined($main::locked_file_data{$realfile})) {
5030 open(ORIGFILE, ">$realfile.webminorig");
5031 print ORIGFILE $main::locked_file_data{$realfile};
5033 $diff = &backquote_command(
5034 "diff ".quotemeta("$realfile.webminorig")." ".
5035 quotemeta($realfile)." 2>/dev/null");
5036 push(@main::locked_file_diff,
5037 { 'type' => $type, 'object' => $realfile,
5038 'data' => $diff } ) if ($diff);
5039 unlink("$realfile.webminorig");
5040 unlink($realfile) if ($delete_file);
5043 if ($gconfig{'logfullfiles'}) {
5044 # Add file details to list of those to fully log
5045 $main::orig_file_data{$realfile} ||=
5046 $main::locked_file_data{$realfile};
5047 $main::orig_file_type{$realfile} ||=
5048 $main::locked_file_type{$realfile};
5051 delete($main::locked_file_data{$realfile});
5052 delete($main::locked_file_type{$realfile});
5056 =head2 test_lock(file)
5058 Returns 1 if some file is currently locked, 0 if not.
5063 my $realfile = &translate_filename($_[0]);
5064 return 0 if (!$_[0]);
5065 return 1 if (defined($main::locked_file_list{$realfile}));
5066 return 0 if (!&can_lock_file($realfile));
5068 if (open(LOCKING, "$realfile.lock")) {
5073 return $pid && kill(0, $pid);
5076 =head2 unlock_all_files
5078 Unlocks all files locked by the current script.
5081 sub unlock_all_files
5083 foreach $f (keys %main::locked_file_list) {
5088 =head2 can_lock_file(file)
5090 Returns 1 if some file should be locked, based on the settings in the
5091 Webmin Configuration module. For internal use by lock_file only.
5096 if (&is_readonly_mode()) {
5097 return 0; # never lock in read-only mode
5099 elsif ($gconfig{'lockmode'} == 0) {
5102 elsif ($gconfig{'lockmode'} == 1) {
5106 # Check if under any of the directories
5108 foreach my $d (split(/\t+/, $gconfig{'lockdirs'})) {
5109 if (&same_file($d, $_[0]) ||
5110 &is_under_directory($d, $_[0])) {
5114 return $gconfig{'lockmode'} == 2 ? $match : !$match;
5118 =head2 webmin_log(action, type, object, ¶ms, [module], [host, script-on-host, client-ip])
5120 Log some action taken by a user. This is typically called at the end of a
5121 script, once all file changes are complete and all commands run. The
5124 =item action - A short code for the action being performed, like 'create'.
5126 =item type - A code for the type of object the action is performed to, like 'user'.
5128 =item object - A short name for the object, like 'joe' if the Unix user 'joe' was just created.
5130 =item params - A hash ref of additional information about the action.
5132 =item module - Name of the module in which the action was performed, which defaults to the current module.
5134 =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.
5136 =item script-on-host - Script name like create_user.cgi on the host the action was performed on.
5138 =item client-ip - IP address of the browser that performed the action.
5143 return if (!$gconfig{'log'} || &is_readonly_mode());
5144 my $m = $_[4] ? $_[4] : &get_module_name();
5146 if ($gconfig{'logclear'}) {
5147 # check if it is time to clear the log
5148 my @st = stat("$webmin_logfile.time");
5149 my $write_logtime = 0;
5151 if ($st[9]+$gconfig{'logtime'}*60*60 < time()) {
5152 # clear logfile and all diff files
5153 &unlink_file("$ENV{'WEBMIN_VAR'}/diffs");
5154 &unlink_file("$ENV{'WEBMIN_VAR'}/files");
5155 &unlink_file("$ENV{'WEBMIN_VAR'}/annotations");
5156 unlink($webmin_logfile);
5163 if ($write_logtime) {
5164 open(LOGTIME, ">$webmin_logfile.time");
5165 print LOGTIME time(),"\n";
5170 # If an action script directory is defined, call the appropriate scripts
5171 if ($gconfig{'action_script_dir'}) {
5172 my ($action, $type, $object) = ($_[0], $_[1], $_[2]);
5173 my ($basedir) = $gconfig{'action_script_dir'};
5175 for my $dir ($basedir/$type/$action, $basedir/$type, $basedir) {
5178 opendir(DIR, $dir) or die "Can't open $dir: $!";
5179 while (defined($file = readdir(DIR))) {
5180 next if ($file =~ /^\.\.?$/); # skip '.' and '..'
5181 if (-x "$dir/$file") {
5182 # Call a script notifying it of the action
5184 $ENV{'ACTION_MODULE'} = &get_module_name();
5185 $ENV{'ACTION_ACTION'} = $_[0];
5186 $ENV{'ACTION_TYPE'} = $_[1];
5187 $ENV{'ACTION_OBJECT'} = $_[2];
5188 $ENV{'ACTION_SCRIPT'} = $script_name;
5189 foreach my $p (keys %param) {
5190 $ENV{'ACTION_PARAM_'.uc($p)} = $param{$p};
5192 system("$dir/$file", @_,
5193 "<$null_file", ">$null_file", "2>&1");
5201 # should logging be done at all?
5202 return if ($gconfig{'logusers'} && &indexof($base_remote_user,
5203 split(/\s+/, $gconfig{'logusers'})) < 0);
5204 return if ($gconfig{'logmodules'} && &indexof($m,
5205 split(/\s+/, $gconfig{'logmodules'})) < 0);
5209 my @tm = localtime($now);
5210 my $script_name = $0 =~ /([^\/]+)$/ ? $1 : '-';
5211 my $id = sprintf "%d.%d.%d", $now, $$, $main::action_id_count;
5212 my $idprefix = substr($now, 0, 5);
5213 $main::action_id_count++;
5214 my $line = sprintf "%s [%2.2d/%s/%4.4d %2.2d:%2.2d:%2.2d] %s %s %s %s %s \"%s\" \"%s\" \"%s\"",
5215 $id, $tm[3], ucfirst($number_to_month_map{$tm[4]}), $tm[5]+1900,
5216 $tm[2], $tm[1], $tm[0],
5217 $remote_user || '-',
5218 $main::session_id || '-',
5219 $_[7] || $ENV{'REMOTE_HOST'} || '-',
5220 $m, $_[5] ? "$_[5]:$_[6]" : $script_name,
5221 $_[0], $_[1] ne '' ? $_[1] : '-', $_[2] ne '' ? $_[2] : '-';
5223 foreach my $k (sort { $a cmp $b } keys %{$_[3]}) {
5224 my $v = $_[3]->{$k};
5230 elsif (ref($v) eq 'ARRAY') {
5234 $vv =~ s/(['"\\\r\n\t\%])/sprintf("%%%2.2X",ord($1))/ge;
5235 $line .= " $k='$vv'";
5239 foreach $vv (split(/\0/, $v)) {
5241 $vv =~ s/(['"\\\r\n\t\%])/sprintf("%%%2.2X",ord($1))/ge;
5242 $line .= " $k='$vv'";
5245 $param{$k} = join(" ", @pv);
5247 open(WEBMINLOG, ">>$webmin_logfile");
5248 print WEBMINLOG $line,"\n";
5250 if ($gconfig{'logperms'}) {
5251 chmod(oct($gconfig{'logperms'}), $webmin_logfile);
5254 chmod(0600, $webmin_logfile);
5257 if ($gconfig{'logfiles'} && !&get_module_variable('$no_log_file_changes')) {
5258 # Find and record the changes made to any locked files, or commands run
5260 mkdir("$ENV{'WEBMIN_VAR'}/diffs", 0700);
5261 foreach my $d (@main::locked_file_diff) {
5262 mkdir("$ENV{'WEBMIN_VAR'}/diffs/$idprefix", 0700);
5263 mkdir("$ENV{'WEBMIN_VAR'}/diffs/$idprefix/$id", 0700);
5264 open(DIFFLOG, ">$ENV{'WEBMIN_VAR'}/diffs/$idprefix/$id/$i");
5265 print DIFFLOG "$d->{'type'} $d->{'object'}\n";
5266 print DIFFLOG $d->{'data'};
5268 if ($d->{'input'}) {
5270 ">$ENV{'WEBMIN_VAR'}/diffs/$idprefix/$id/$i.input");
5271 print DIFFLOG $d->{'input'};
5274 if ($gconfig{'logperms'}) {
5275 chmod(oct($gconfig{'logperms'}),
5276 "$ENV{'WEBMIN_VAR'}/diffs/$idprefix/$id/$i",
5277 "$ENV{'WEBMIN_VAR'}/diffs/$idprefix/$id/$i.input");
5281 @main::locked_file_diff = undef;
5284 if ($gconfig{'logfullfiles'}) {
5285 # Save the original contents of any modified files
5287 mkdir("$ENV{'WEBMIN_VAR'}/files", 0700);
5288 foreach my $f (keys %main::orig_file_data) {
5289 mkdir("$ENV{'WEBMIN_VAR'}/files/$idprefix", 0700);
5290 mkdir("$ENV{'WEBMIN_VAR'}/files/$idprefix/$id", 0700);
5291 open(ORIGLOG, ">$ENV{'WEBMIN_VAR'}/files/$idprefix/$id/$i");
5292 if (!defined($main::orig_file_type{$f})) {
5293 print ORIGLOG -1," ",$f,"\n";
5296 print ORIGLOG $main::orig_file_type{$f}," ",$f,"\n";
5298 print ORIGLOG $main::orig_file_data{$f};
5300 if ($gconfig{'logperms'}) {
5301 chmod(oct($gconfig{'logperms'}),
5302 "$ENV{'WEBMIN_VAR'}/files/$idprefix/$id.$i");
5306 %main::orig_file_data = undef;
5307 %main::orig_file_type = undef;
5310 if ($miniserv::page_capture_out) {
5311 # Save the whole page output
5312 mkdir("$ENV{'WEBMIN_VAR'}/output", 0700);
5313 mkdir("$ENV{'WEBMIN_VAR'}/output/$idprefix", 0700);
5314 open(PAGEOUT, ">$ENV{'WEBMIN_VAR'}/output/$idprefix/$id");
5315 print PAGEOUT $miniserv::page_capture_out;
5317 if ($gconfig{'logperms'}) {
5318 chmod(oct($gconfig{'logperms'}),
5319 "$ENV{'WEBMIN_VAR'}/output/$idprefix/$id");
5321 $miniserv::page_capture_out = undef;
5325 if ($gconfig{'logsyslog'}) {
5326 eval 'use Sys::Syslog qw(:DEFAULT setlogsock);
5327 openlog(&get_product_name(), "cons,pid,ndelay", "daemon");
5328 setlogsock("inet");';
5330 # Syslog module is installed .. try to convert to a
5331 # human-readable form
5333 my $mod = &get_module_name();
5334 my $mdir = module_root_directory($mod);
5335 if (-r "$mdir/log_parser.pl") {
5336 &foreign_require($mod, "log_parser.pl");
5338 foreach my $k (keys %{$_[3]}) {
5339 my $v = $_[3]->{$k};
5340 if (ref($v) eq 'ARRAY') {
5341 $params{$k} = join("\0", @$v);
5347 $msg = &foreign_call($mod, "parse_webmin_log",
5348 $remote_user, $script_name,
5349 $_[0], $_[1], $_[2], \%params);
5350 $msg =~ s/<[^>]*>//g; # Remove tags
5352 elsif ($_[0] eq "_config_") {
5353 my %wtext = &load_language("webminlog");
5354 $msg = $wtext{'search_config'};
5356 $msg ||= "$_[0] $_[1] $_[2]";
5357 my %info = &get_module_info($m);
5358 eval { syslog("info", "%s", "[$info{'desc'}] $msg"); };
5363 =head2 additional_log(type, object, data, [input])
5365 Records additional log data for an upcoming call to webmin_log, such
5366 as a command that was run or SQL that was executed. Typically you will never
5367 need to call this function directory.
5372 if ($gconfig{'logfiles'} && !&get_module_variable('$no_log_file_changes')) {
5373 push(@main::locked_file_diff,
5374 { 'type' => $_[0], 'object' => $_[1], 'data' => $_[2],
5375 'input' => $_[3] } );
5379 =head2 webmin_debug_log(type, message)
5381 Write something to the Webmin debug log. For internal use only.
5384 sub webmin_debug_log
5386 my ($type, $msg) = @_;
5387 return 0 if (!$main::opened_debug_log);
5388 return 0 if ($gconfig{'debug_no'.$main::webmin_script_type});
5389 if ($gconfig{'debug_modules'}) {
5390 my @dmods = split(/\s+/, $gconfig{'debug_modules'});
5391 return 0 if (&indexof($main::initial_module_name, @dmods) < 0);
5394 eval 'use Time::HiRes qw(gettimeofday); ($now, $ms) = gettimeofday';
5396 my @tm = localtime($now);
5398 "%s [%2.2d/%s/%4.4d %2.2d:%2.2d:%2.2d.%6.6d] %s %s %s %s \"%s\"",
5399 $$, $tm[3], ucfirst($number_to_month_map{$tm[4]}), $tm[5]+1900,
5400 $tm[2], $tm[1], $tm[0], $ms,
5401 $remote_user || "-",
5402 $ENV{'REMOTE_HOST'} || "-",
5403 &get_module_name() || "-",
5406 seek(main::DEBUGLOG, 0, 2);
5407 print main::DEBUGLOG $line."\n";
5411 =head2 system_logged(command)
5413 Just calls the Perl system() function, but also logs the command run.
5418 if (&is_readonly_mode()) {
5419 print STDERR "Vetoing command $_[0]\n";
5422 my @realcmd = ( &translate_command($_[0]), @_[1..$#_] );
5423 my $cmd = join(" ", @realcmd);
5425 if ($cmd =~ s/(\s*&\s*)$//) {
5428 while($cmd =~ s/(\d*)(<|>)((\/(tmp|dev)\S+)|&\d+)\s*$//) { }
5429 $cmd =~ s/^\((.*)\)\s*$/$1/;
5431 &additional_log('exec', undef, $cmd);
5432 return system(@realcmd);
5435 =head2 backquote_logged(command)
5437 Executes a command and returns the output (like `command`), but also logs it.
5440 sub backquote_logged
5442 if (&is_readonly_mode()) {
5444 print STDERR "Vetoing command $_[0]\n";
5447 my $realcmd = &translate_command($_[0]);
5450 if ($cmd =~ s/(\s*&\s*)$//) {
5453 while($cmd =~ s/(\d*)(<|>)((\/(tmp\/.webmin|dev)\S+)|&\d+)\s*$//) { }
5454 $cmd =~ s/^\((.*)\)\s*$/$1/;
5456 &additional_log('exec', undef, $cmd);
5457 &webmin_debug_log('CMD', "cmd=$cmd") if ($gconfig{'debug_what_cmd'});
5461 =head2 backquote_with_timeout(command, timeout, safe?, [maxlines])
5463 Runs some command, waiting at most the given number of seconds for it to
5464 complete, and returns the output. The maxlines parameter sets the number
5465 of lines of output to capture. The safe parameter should be set to 1 if the
5466 command is safe for read-only mode users to run.
5469 sub backquote_with_timeout
5471 my $realcmd = &translate_command($_[0]);
5472 &webmin_debug_log('CMD', "cmd=$realcmd timeout=$_[1]")
5473 if ($gconfig{'debug_what_cmd'});
5475 my $pid = &open_execute_command(OUT, "($realcmd) <$null_file", 1, $_[2]);
5480 my $elapsed = time() - $start;
5481 last if ($elapsed > $_[1]);
5483 vec($rmask, fileno(OUT), 1) = 1;
5484 my $sel = select($rmask, undef, undef, $_[1] - $elapsed);
5485 last if (!$sel || $sel < 0);
5487 last if (!defined($line));
5490 if ($_[3] && $linecount >= $_[3]) {
5495 if (kill('TERM', $pid) && time() - $start >= $_[1]) {
5499 return wantarray ? ($out, $timed_out) : $out;
5502 =head2 backquote_command(command, safe?)
5504 Executes a command and returns the output (like `command`), subject to
5505 command translation. The safe parameter should be set to 1 if the command
5506 is safe for read-only mode users to run.
5509 sub backquote_command
5511 if (&is_readonly_mode() && !$_[1]) {
5512 print STDERR "Vetoing command $_[0]\n";
5516 my $realcmd = &translate_command($_[0]);
5517 &webmin_debug_log('CMD', "cmd=$realcmd") if ($gconfig{'debug_what_cmd'});
5521 =head2 kill_logged(signal, pid, ...)
5523 Like Perl's built-in kill function, but also logs the fact that some process
5524 was killed. On Windows, falls back to calling process.exe to terminate a
5530 return scalar(@_)-1 if (&is_readonly_mode());
5531 &webmin_debug_log('KILL', "signal=$_[0] pids=".join(" ", @_[1..@_-1]))
5532 if ($gconfig{'debug_what_procs'});
5533 &additional_log('kill', $_[0], join(" ", @_[1..@_-1])) if (@_ > 1);
5534 if ($gconfig{'os_type'} eq 'windows') {
5535 # Emulate some kills with process.exe
5536 my $arg = $_[0] eq "KILL" ? "-k" :
5537 $_[0] eq "TERM" ? "-q" :
5538 $_[0] eq "STOP" ? "-s" :
5539 $_[0] eq "CONT" ? "-r" : undef;
5541 foreach my $p (@_[1..@_-1]) {
5543 $ok ||= kill($_[0], $p);
5546 &execute_command("process $arg $p");
5558 =head2 rename_logged(old, new)
5560 Re-names a file and logs the rename. If the old and new files are on different
5561 filesystems, calls mv or the Windows rename function to do the job.
5566 &additional_log('rename', $_[0], $_[1]) if ($_[0] ne $_[1]);
5567 return &rename_file($_[0], $_[1]);
5570 =head2 rename_file(old, new)
5572 Renames a file or directory. If the old and new files are on different
5573 filesystems, calls mv or the Windows rename function to do the job.
5578 if (&is_readonly_mode()) {
5579 print STDERR "Vetoing rename from $_[0] to $_[1]\n";
5582 my $src = &translate_filename($_[0]);
5583 my $dst = &translate_filename($_[1]);
5584 &webmin_debug_log('RENAME', "src=$src dst=$dst")
5585 if ($gconfig{'debug_what_ops'});
5586 my $ok = rename($src, $dst);
5587 if (!$ok && $! !~ /permission/i) {
5588 # Try the mv command, in case this is a cross-filesystem rename
5589 if ($gconfig{'os_type'} eq 'windows') {
5590 # Need to use rename
5591 my $out = &backquote_command("rename ".quotemeta($_[0]).
5592 " ".quotemeta($_[1])." 2>&1");
5594 $! = $out if (!$ok);
5598 my $out = &backquote_command("mv ".quotemeta($_[0]).
5599 " ".quotemeta($_[1])." 2>&1");
5601 $! = $out if (!$ok);
5607 =head2 symlink_logged(src, dest)
5609 Create a symlink, and logs it. Effectively does the same thing as the Perl
5616 my $rv = &symlink_file($_[0], $_[1]);
5617 &unlock_file($_[1]);
5621 =head2 symlink_file(src, dest)
5623 Creates a soft link, unless in read-only mode. Effectively does the same thing
5624 as the Perl symlink function.
5629 if (&is_readonly_mode()) {
5630 print STDERR "Vetoing symlink from $_[0] to $_[1]\n";
5633 my $src = &translate_filename($_[0]);
5634 my $dst = &translate_filename($_[1]);
5635 &webmin_debug_log('SYMLINK', "src=$src dst=$dst")
5636 if ($gconfig{'debug_what_ops'});
5637 return symlink($src, $dst);
5640 =head2 link_file(src, dest)
5642 Creates a hard link, unless in read-only mode. The existing new link file
5643 will be deleted if necessary. Effectively the same as Perl's link function.
5648 if (&is_readonly_mode()) {
5649 print STDERR "Vetoing link from $_[0] to $_[1]\n";
5652 my $src = &translate_filename($_[0]);
5653 my $dst = &translate_filename($_[1]);
5654 &webmin_debug_log('LINK', "src=$src dst=$dst")
5655 if ($gconfig{'debug_what_ops'});
5656 unlink($dst); # make sure link works
5657 return link($src, $dst);
5660 =head2 make_dir(dir, perms, recursive)
5662 Creates a directory and sets permissions on it, unless in read-only mode.
5663 The perms parameter sets the octal permissions to apply, which unlike Perl's
5664 mkdir will really get set. The recursive flag can be set to 1 to have the
5665 function create parent directories too.
5670 my ($dir, $perms, $recur) = @_;
5671 if (&is_readonly_mode()) {
5672 print STDERR "Vetoing directory $dir\n";
5675 $dir = &translate_filename($dir);
5676 my $exists = -d $dir ? 1 : 0;
5677 return 1 if ($exists && $recur); # already exists
5678 &webmin_debug_log('MKDIR', $dir) if ($gconfig{'debug_what_ops'});
5679 my $rv = mkdir($dir, $perms);
5680 if (!$rv && $recur) {
5681 # Failed .. try mkdir -p
5682 my $param = $gconfig{'os_type'} eq 'windows' ? "" : "-p";
5683 my $ex = &execute_command("mkdir $param "."e_path($dir));
5689 chmod($perms, $dir);
5694 =head2 set_ownership_permissions(user, group, perms, file, ...)
5696 Sets the user, group owner and permissions on some files. The parameters are :
5698 =item user - UID or username to change the file owner to. If undef, then the owner is not changed.
5700 =item group - GID or group name to change the file group to. If undef, then the group is set to the user's primary group.
5702 =item perms - Octal permissions set to set on the file. If undef, they are left alone.
5704 =item file - One or more files or directories to modify.
5707 sub set_ownership_permissions
5709 my ($user, $group, $perms, @files) = @_;
5710 if (&is_readonly_mode()) {
5711 print STDERR "Vetoing permission changes on ",join(" ", @files),"\n";
5714 @files = map { &translate_filename($_) } @files;
5715 if ($gconfig{'debug_what_ops'}) {
5716 foreach my $f (@files) {
5717 &webmin_debug_log('PERMS',
5718 "file=$f user=$user group=$group perms=$perms");
5722 if (defined($user)) {
5723 my $uid = $user !~ /^\d+$/ ? getpwnam($user) : $user;
5725 if (defined($group)) {
5726 $gid = $group !~ /^\d+$/ ? getgrnam($group) : $group;
5729 my @uinfo = getpwuid($uid);
5732 $rv = chown($uid, $gid, @files);
5734 if ($rv && defined($perms)) {
5735 $rv = chmod($perms, @files);
5740 =head2 unlink_logged(file, ...)
5742 Like Perl's unlink function, but locks the files beforehand and un-locks them
5743 after so that the deletion is logged by Webmin.
5749 foreach my $f (@_) {
5750 if (!&test_lock($f)) {
5755 my @rv = &unlink_file(@_);
5756 foreach my $f (@_) {
5761 return wantarray ? @rv : $rv[0];
5764 =head2 unlink_file(file, ...)
5766 Deletes some files or directories. Like Perl's unlink function, but also
5767 recursively deletes directories with the rm command if needed.
5772 return 1 if (&is_readonly_mode());
5775 foreach my $f (@_) {
5776 &unflush_file_lines($f);
5777 my $realf = &translate_filename($f);
5778 &webmin_debug_log('UNLINK', $realf) if ($gconfig{'debug_what_ops'});
5780 if (!rmdir($realf)) {
5782 if ($gconfig{'os_type'} eq 'windows') {
5783 # Call del and rmdir commands
5786 my $out = `del /q "$qm" 2>&1`;
5788 $out = `rmdir "$qm" 2>&1`;
5793 my $qm = quotemeta($realf);
5794 $out = `rm -rf $qm 2>&1`;
5803 if (!unlink($realf)) {
5809 return wantarray ? ($rv, $err) : $rv;
5812 =head2 copy_source_dest(source, dest)
5814 Copy some file or directory to a new location. Returns 1 on success, or 0
5815 on failure - also sets $! on failure. If the source is a directory, uses
5816 piped tar commands to copy a whole directory structure including permissions
5820 sub copy_source_dest
5822 return (1, undef) if (&is_readonly_mode());
5823 my ($src, $dst) = @_;
5826 &webmin_debug_log('COPY', "src=$src dst=$dst")
5827 if ($gconfig{'debug_what_ops'});
5828 if ($gconfig{'os_type'} eq 'windows') {
5829 # No tar or cp on windows, so need to use copy command
5833 $out = &backquote_logged("xcopy \"$src\" \"$dst\" /Y /E /I 2>&1");
5836 $out = &backquote_logged("copy /Y \"$src\" \"$dst\" 2>&1");
5844 # A directory .. need to copy with tar command
5845 my @st = stat($src);
5848 &set_ownership_permissions($st[4], $st[5], $st[2], $dst);
5849 $out = &backquote_logged("(cd ".quotemeta($src)." ; tar cf - . | (cd ".quotemeta($dst)." ; tar xf -)) 2>&1");
5856 # Can just copy with cp
5857 my $out = &backquote_logged("cp -p ".quotemeta($src).
5858 " ".quotemeta($dst)." 2>&1");
5864 return wantarray ? ($ok, $err) : $ok;
5867 =head2 remote_session_name(host|&server)
5869 Generates a session ID for some server. For this server, this will always
5870 be an empty string. For a server object it will include the hostname and
5871 port and PID. For a server name, it will include the hostname and PID. For
5875 sub remote_session_name
5877 return ref($_[0]) && $_[0]->{'host'} && $_[0]->{'port'} ?
5878 "$_[0]->{'host'}:$_[0]->{'port'}.$$" :
5879 $_[0] eq "" || ref($_[0]) && $_[0]->{'id'} == 0 ? "" :
5880 ref($_[0]) ? "" : "$_[0].$$";
5883 =head2 remote_foreign_require(server, module, file)
5885 Connects to rpc.cgi on a remote webmin server and have it open a session
5886 to a process that will actually do the require and run functions. This is the
5887 equivalent for foreign_require, but for a remote Webmin system. The server
5888 parameter can either be a hostname of a system registered in the Webmin
5889 Servers Index module, or a hash reference for a system from that module.
5892 sub remote_foreign_require
5894 my $call = { 'action' => 'require',
5897 my $sn = &remote_session_name($_[0]);
5898 if ($remote_session{$sn}) {
5899 $call->{'session'} = $remote_session{$sn};
5902 $call->{'newsession'} = 1;
5904 my $rv = &remote_rpc_call($_[0], $call);
5905 if ($rv->{'session'}) {
5906 $remote_session{$sn} = $rv->{'session'};
5907 $remote_session_server{$sn} = $_[0];
5911 =head2 remote_foreign_call(server, module, function, [arg]*)
5913 Call a function on a remote server. Must have been setup first with
5914 remote_foreign_require for the same server and module. Equivalent to
5915 foreign_call, but with the extra server parameter to specify the remote
5919 sub remote_foreign_call
5921 return undef if (&is_readonly_mode());
5922 my $sn = &remote_session_name($_[0]);
5923 return &remote_rpc_call($_[0], { 'action' => 'call',
5926 'session' => $remote_session{$sn},
5927 'args' => [ @_[3 .. $#_] ] } );
5930 =head2 remote_foreign_check(server, module, [api-only])
5932 Checks if some module is installed and supported on a remote server. Equivilant
5933 to foreign_check, but for the remote Webmin system specified by the server
5937 sub remote_foreign_check
5939 return &remote_rpc_call($_[0], { 'action' => 'check',
5944 =head2 remote_foreign_config(server, module)
5946 Gets the configuration for some module from a remote server, as a hash.
5947 Equivalent to foreign_config, but for a remote system.
5950 sub remote_foreign_config
5952 return &remote_rpc_call($_[0], { 'action' => 'config',
5953 'module' => $_[1] });
5956 =head2 remote_eval(server, module, code)
5958 Evaluates some perl code in the context of a module on a remote webmin server.
5959 The server parameter must be the hostname of a remote system, module must
5960 be a module directory name, and code a string of Perl code to run. This can
5961 only be called after remote_foreign_require for the same server and module.
5966 return undef if (&is_readonly_mode());
5967 my $sn = &remote_session_name($_[0]);
5968 return &remote_rpc_call($_[0], { 'action' => 'eval',
5971 'session' => $remote_session{$sn} });
5974 =head2 remote_write(server, localfile, [remotefile], [remotebasename])
5976 Transfers some local file to another server via Webmin's RPC protocol, and
5977 returns the resulting remote filename. If the remotefile parameter is given,
5978 that is the destination filename which will be used. Otherwise a randomly
5979 selected temporary filename will be used, and returned by the function.
5984 return undef if (&is_readonly_mode());
5986 my $sn = &remote_session_name($_[0]);
5987 if (!$_[0] || $remote_server_version{$sn} >= 0.966) {
5988 # Copy data over TCP connection
5989 my $rv = &remote_rpc_call($_[0], { 'action' => 'tcpwrite',
5991 'name' => $_[3] } );
5993 my $serv = ref($_[0]) ? $_[0]->{'host'} : $_[0];
5994 &open_socket($serv || "localhost", $rv->[1], TWRITE, \$error);
5995 return &$main::remote_error_handler("Failed to transfer file : $error")
5998 while(read(FILE, $got, 1024) > 0) {
6002 shutdown(TWRITE, 1);
6004 if ($error && $error !~ /^OK/) {
6005 # Got back an error!
6006 return &$main::remote_error_handler("Failed to transfer file : $error");
6012 # Just pass file contents as parameters
6014 while(read(FILE, $got, 1024) > 0) {
6018 return &remote_rpc_call($_[0], { 'action' => 'write',
6021 'session' => $remote_session{$sn} });
6025 =head2 remote_read(server, localfile, remotefile)
6027 Transfers a file from a remote server to this system, using Webmin's RPC
6028 protocol. The server parameter must be the hostname of a system registered
6029 in the Webmin Servers Index module, localfile is the destination path on this
6030 system, and remotefile is the file to fetch from the remote server.
6035 my $sn = &remote_session_name($_[0]);
6036 if (!$_[0] || $remote_server_version{$sn} >= 0.966) {
6037 # Copy data over TCP connection
6038 my $rv = &remote_rpc_call($_[0], { 'action' => 'tcpread',
6039 'file' => $_[2] } );
6041 return &$main::remote_error_handler("Failed to transfer file : $rv->[1]");
6044 my $serv = ref($_[0]) ? $_[0]->{'host'} : $_[0];
6045 &open_socket($serv || "localhost", $rv->[1], TREAD, \$error);
6046 return &$main::remote_error_handler("Failed to transfer file : $error")
6049 open(FILE, ">$_[1]");
6050 while(read(TREAD, $got, 1024) > 0) {
6057 # Just get data as return value
6058 my $d = &remote_rpc_call($_[0], { 'action' => 'read',
6060 'session' => $remote_session{$sn} });
6061 open(FILE, ">$_[1]");
6067 =head2 remote_finished
6069 Close all remote sessions. This happens automatically after a while
6070 anyway, but this function should be called to clean things up faster.
6075 foreach my $sn (keys %remote_session) {
6076 my $server = $remote_session_server{$sn};
6077 &remote_rpc_call($server, { 'action' => 'quit',
6078 'session' => $remote_session{$sn} } );
6079 delete($remote_session{$sn});
6080 delete($remote_session_server{$sn});
6082 foreach my $fh (keys %fast_fh_cache) {
6084 delete($fast_fh_cache{$fh});
6088 =head2 remote_error_setup(&function)
6090 Sets a function to be called instead of &error when a remote RPC operation
6091 fails. Useful if you want to have more control over your remote operations.
6094 sub remote_error_setup
6096 $main::remote_error_handler = $_[0] || \&error;
6099 =head2 remote_rpc_call(server, &structure)
6101 Calls rpc.cgi on some server and passes it a perl structure (hash,array,etc)
6102 and then reads back a reply structure. This is mainly for internal use only,
6103 and is called by the other remote_* functions.
6109 my $sn = &remote_session_name($_[0]); # Will be undef for local connection
6111 # Server structure was given
6113 $serv->{'user'} || $serv->{'id'} == 0 ||
6114 return &$main::remote_error_handler(
6115 "No Webmin login set for server");
6118 # lookup the server in the webmin servers module if needed
6119 if (!%main::remote_servers_cache) {
6120 &foreign_require("servers", "servers-lib.pl");
6121 foreach $s (&foreign_call("servers", "list_servers")) {
6122 $main::remote_servers_cache{$s->{'host'}} = $s;
6123 $main::remote_servers_cache{$s->{'host'}.":".$s->{'port'}} = $s;
6126 $serv = $main::remote_servers_cache{$_[0]};
6127 $serv || return &$main::remote_error_handler(
6128 "No Webmin Servers entry for $_[0]");
6129 $serv->{'user'} || return &$main::remote_error_handler(
6130 "No login set for server $_[0]");
6132 my $ip = $serv->{'ip'} || $serv->{'host'};
6134 # Work out the username and password
6136 if ($serv->{'sameuser'}) {
6137 $user = $remote_user;
6138 defined($main::remote_pass) || return &$main::remote_error_handler(
6139 "Password for this server is not available");
6140 $pass = $main::remote_pass;
6143 $user = $serv->{'user'};
6144 $pass = $serv->{'pass'};
6147 if ($serv->{'fast'} || !$sn) {
6148 # Make TCP connection call to fastrpc.cgi
6149 if (!$fast_fh_cache{$sn} && $sn) {
6150 # Need to open the connection
6151 my $con = &make_http_connection(
6152 $ip, $serv->{'port'}, $serv->{'ssl'},
6153 "POST", "/fastrpc.cgi");
6154 return &$main::remote_error_handler(
6155 "Failed to connect to $serv->{'host'} : $con")
6157 &write_http_connection($con, "Host: $serv->{'host'}\r\n");
6158 &write_http_connection($con, "User-agent: Webmin\r\n");
6159 my $auth = &encode_base64("$user:$pass");
6161 &write_http_connection($con, "Authorization: basic $auth\r\n");
6162 &write_http_connection($con, "Content-length: ",
6163 length($tostr),"\r\n");
6164 &write_http_connection($con, "\r\n");
6165 &write_http_connection($con, $tostr);
6167 # read back the response
6168 my $line = &read_http_connection($con);
6169 $line =~ tr/\r\n//d;
6170 if ($line =~ /^HTTP\/1\..\s+401\s+/) {
6171 return &$main::remote_error_handler("Login to RPC server as $user rejected");
6173 $line =~ /^HTTP\/1\..\s+200\s+/ ||
6174 return &$main::remote_error_handler("HTTP error : $line");
6176 $line = &read_http_connection($con);
6177 $line =~ tr/\r\n//d;
6179 $line = &read_http_connection($con);
6180 if ($line =~ /^0\s+(.*)/) {
6181 return &$main::remote_error_handler("RPC error : $1");
6183 elsif ($line =~ /^1\s+(\S+)\s+(\S+)\s+(\S+)/ ||
6184 $line =~ /^1\s+(\S+)\s+(\S+)/) {
6185 # Started ok .. connect and save SID
6186 &close_http_connection($con);
6187 my ($port, $sid, $version, $error) = ($1, $2, $3);
6188 &open_socket($ip, $port, $sid, \$error);
6189 return &$main::remote_error_handler("Failed to connect to fastrpc.cgi : $error")
6191 $fast_fh_cache{$sn} = $sid;
6192 $remote_server_version{$sn} = $version;
6195 while($stuff = &read_http_connection($con)) {
6198 return &$main::remote_error_handler("Bad response from fastrpc.cgi : $line");
6201 elsif (!$fast_fh_cache{$sn}) {
6202 # Open the connection by running fastrpc.cgi locally
6203 pipe(RPCOUTr, RPCOUTw);
6207 open(STDOUT, ">&RPCOUTw");
6211 $ENV{'REQUEST_METHOD'} = 'GET';
6212 $ENV{'SCRIPT_NAME'} = '/fastrpc.cgi';
6213 $ENV{'SERVER_ROOT'} ||= $root_directory;
6215 if ($base_remote_user ne 'root' &&
6216 $base_remote_user ne 'admin') {
6217 # Need to fake up a login for the CGI!
6218 &read_acl(undef, \%acl, [ 'root' ]);
6219 $ENV{'BASE_REMOTE_USER'} =
6220 $ENV{'REMOTE_USER'} =
6221 $acl{'root'} ? 'root' : 'admin';
6223 delete($ENV{'FOREIGN_MODULE_NAME'});
6224 delete($ENV{'FOREIGN_ROOT_DIRECTORY'});
6225 chdir($root_directory);
6226 if (!exec("$root_directory/fastrpc.cgi")) {
6227 print "exec failed : $!\n";
6234 ($line = <RPCOUTr>) =~ tr/\r\n//d;
6238 if ($line =~ /^0\s+(.*)/) {
6239 return &$main::remote_error_handler("RPC error : $2");
6241 elsif ($line =~ /^1\s+(\S+)\s+(\S+)/) {
6242 # Started ok .. connect and save SID
6244 my ($port, $sid, $error) = ($1, $2, undef);
6245 &open_socket("localhost", $port, $sid, \$error);
6246 return &$main::remote_error_handler("Failed to connect to fastrpc.cgi : $error") if ($error);
6247 $fast_fh_cache{$sn} = $sid;
6254 &error("Bad response from fastrpc.cgi : $line");
6257 # Got a connection .. send off the request
6258 my $fh = $fast_fh_cache{$sn};
6259 my $tostr = &serialise_variable($_[1]);
6260 print $fh length($tostr)," $fh\n";
6264 return &$main::remote_error_handler(
6265 "Error reading response length from fastrpc.cgi : $!")
6267 my $rlen = int($rstr);
6268 my ($fromstr, $got);
6269 while(length($fromstr) < $rlen) {
6270 return &$main::remote_error_handler(
6271 "Failed to read from fastrpc.cgi : $!")
6272 if (read($fh, $got, $rlen - length($fromstr)) <= 0);
6275 my $from = &unserialise_variable($fromstr);
6277 # No response at all
6278 return &$main::remote_error_handler("Remote Webmin error");
6280 elsif (ref($from) ne 'HASH') {
6282 return &$main::remote_error_handler(
6283 "Invalid remote Webmin response : $from");
6285 elsif (!$from->{'status'}) {
6287 $from->{'rv'} =~ s/\s+at\s+(\S+)\s+line\s+(\d+)(,\s+<\S+>\s+line\s+(\d+))?//;
6288 return &$main::remote_error_handler($from->{'rv'});
6290 if (defined($from->{'arv'})) {
6291 return @{$from->{'arv'}};
6294 return $from->{'rv'};
6298 # Call rpc.cgi on remote server
6299 my $tostr = &serialise_variable($_[1]);
6301 my $con = &make_http_connection($ip, $serv->{'port'},
6302 $serv->{'ssl'}, "POST", "/rpc.cgi");
6303 return &$main::remote_error_handler("Failed to connect to $serv->{'host'} : $con") if (!ref($con));
6305 &write_http_connection($con, "Host: $serv->{'host'}\r\n");
6306 &write_http_connection($con, "User-agent: Webmin\r\n");
6307 my $auth = &encode_base64("$user:$pass");
6309 &write_http_connection($con, "Authorization: basic $auth\r\n");
6310 &write_http_connection($con, "Content-length: ",length($tostr),"\r\n");
6311 &write_http_connection($con, "\r\n");
6312 &write_http_connection($con, $tostr);
6314 # read back the response
6315 my $line = &read_http_connection($con);
6316 $line =~ tr/\r\n//d;
6317 if ($line =~ /^HTTP\/1\..\s+401\s+/) {
6318 return &$main::remote_error_handler("Login to RPC server as $user rejected");
6320 $line =~ /^HTTP\/1\..\s+200\s+/ || return &$main::remote_error_handler("RPC HTTP error : $line");
6322 $line = &read_http_connection($con);
6323 $line =~ tr/\r\n//d;
6326 while($line = &read_http_connection($con)) {
6330 my $from = &unserialise_variable($fromstr);
6331 return &$main::remote_error_handler("Invalid RPC login to $serv->{'host'}") if (!$from->{'status'});
6332 if (defined($from->{'arv'})) {
6333 return @{$from->{'arv'}};
6336 return $from->{'rv'};
6341 =head2 remote_multi_callback(&servers, parallel, &function, arg|&args, &returns, &errors, [module, library])
6343 Executes some function in parallel on multiple servers at once. Fills in
6344 the returns and errors arrays respectively. If the module and library
6345 parameters are given, that module is remotely required on the server first,
6346 to check if it is connectable. The parameters are :
6348 =item servers - A list of Webmin system hash references.
6350 =item parallel - Number of parallel operations to perform.
6352 =item function - Reference to function to call for each system.
6354 =item args - Additional parameters to the function.
6356 =item returns - Array ref to place return values into, in same order as servers.
6358 =item errors - Array ref to place error messages into.
6360 =item module - Optional module to require on the remote system first.
6362 =item library - Optional library to require in the module.
6365 sub remote_multi_callback
6367 my ($servs, $parallel, $func, $args, $rets, $errs, $mod, $lib) = @_;
6368 &remote_error_setup(\&remote_multi_callback_error);
6370 # Call the functions
6372 foreach my $g (@$servs) {
6378 $remote_multi_callback_err = undef;
6380 # Require the remote lib
6381 &remote_foreign_require($g->{'host'}, $mod, $lib);
6382 if ($remote_multi_callback_err) {
6383 # Failed .. return error
6384 print $wh &serialise_variable(
6385 [ undef, $remote_multi_callback_err ]);
6391 my $a = ref($args) ? $args->[$p] : $args;
6392 my $rv = &$func($g, $a);
6395 print $wh &serialise_variable(
6396 [ $rv, $remote_multi_callback_err ]);
6404 # Read back the results
6406 foreach my $g (@$servs) {
6410 $errs->[$p] = "Failed to read response from $g->{'host'}";
6413 my $rv = &unserialise_variable($line);
6415 $rets->[$p] = $rv->[0];
6416 $errs->[$p] = $rv->[1];
6421 &remote_error_setup(undef);
6424 sub remote_multi_callback_error
6426 $remote_multi_callback_err = $_[0];
6429 =head2 serialise_variable(variable)
6431 Converts some variable (maybe a scalar, hash ref, array ref or scalar ref)
6432 into a url-encoded string. In the cases of arrays and hashes, it is recursively
6433 called on each member to serialize the entire object.
6436 sub serialise_variable
6438 if (!defined($_[0])) {
6444 $rv = &urlize($_[0]);
6446 elsif ($r eq 'SCALAR') {
6447 $rv = &urlize(${$_[0]});
6449 elsif ($r eq 'ARRAY') {
6450 $rv = join(",", map { &urlize(&serialise_variable($_)) } @{$_[0]});
6452 elsif ($r eq 'HASH') {
6453 $rv = join(",", map { &urlize(&serialise_variable($_)).",".
6454 &urlize(&serialise_variable($_[0]->{$_})) }
6457 elsif ($r eq 'REF') {
6458 $rv = &serialise_variable(${$_[0]});
6460 elsif ($r eq 'CODE') {
6465 # An object - treat as a hash
6466 $r = "OBJECT ".&urlize($r);
6467 $rv = join(",", map { &urlize(&serialise_variable($_)).",".
6468 &urlize(&serialise_variable($_[0]->{$_})) }
6471 return ($r ? $r : 'VAL').",".$rv;
6474 =head2 unserialise_variable(string)
6476 Converts a string created by serialise_variable() back into the original
6477 scalar, hash ref, array ref or scalar ref. If the original variable was a Perl
6478 object, the same class is used on this system, if available.
6481 sub unserialise_variable
6483 my @v = split(/,/, $_[0]);
6485 if ($v[0] eq 'VAL') {
6486 @v = split(/,/, $_[0], -1);
6487 $rv = &un_urlize($v[1]);
6489 elsif ($v[0] eq 'SCALAR') {
6490 local $r = &un_urlize($v[1]);
6493 elsif ($v[0] eq 'ARRAY') {
6495 for(my $i=1; $i<@v; $i++) {
6496 push(@$rv, &unserialise_variable(&un_urlize($v[$i])));
6499 elsif ($v[0] eq 'HASH') {
6501 for(my $i=1; $i<@v; $i+=2) {
6502 $rv->{&unserialise_variable(&un_urlize($v[$i]))} =
6503 &unserialise_variable(&un_urlize($v[$i+1]));
6506 elsif ($v[0] eq 'REF') {
6507 local $r = &unserialise_variable($v[1]);
6510 elsif ($v[0] eq 'UNDEF') {
6513 elsif ($v[0] =~ /^OBJECT\s+(.*)$/) {
6514 # An object hash that we have to re-bless
6517 for(my $i=1; $i<@v; $i+=2) {
6518 $rv->{&unserialise_variable(&un_urlize($v[$i]))} =
6519 &unserialise_variable(&un_urlize($v[$i+1]));
6527 =head2 other_groups(user)
6529 Returns a list of secondary groups a user is a member of, as a list of
6538 while(my @g = getgrent()) {
6539 my @m = split(/\s+/, $g[3]);
6540 push(@rv, $g[2]) if (&indexof($user, @m) >= 0);
6542 endgrent() if ($gconfig{'os_type'} ne 'hpux');
6546 =head2 date_chooser_button(dayfield, monthfield, yearfield)
6548 Returns HTML for a button that pops up a data chooser window. The parameters
6551 =item dayfield - Name of the text field to place the day of the month into.
6553 =item monthfield - Name of the select field to select the month of the year in, indexed from 1.
6555 =item yearfield - Name of the text field to place the year into.
6558 sub date_chooser_button
6560 return &theme_date_chooser_button(@_)
6561 if (defined(&theme_date_chooser_button));
6562 my ($w, $h) = (250, 225);
6563 if ($gconfig{'db_sizedate'}) {
6564 ($w, $h) = split(/x/, $gconfig{'db_sizedate'});
6566 return "<input type=button onClick='window.dfield = form.$_[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";
6569 =head2 help_file(module, file)
6571 Returns the path to a module's help file of some name, typically under the
6572 help directory with a .html extension.
6577 my $mdir = &module_root_directory($_[0]);
6578 my $dir = "$mdir/help";
6579 foreach my $o (@lang_order_list) {
6580 my $lang = "$dir/$_[1].$o.html";
6581 return $lang if (-r $lang);
6583 return "$dir/$_[1].html";
6588 Seeds the random number generator, if not already done in this script. On Linux
6589 this makes use of the current time, process ID and a read from /dev/urandom.
6590 On other systems, only the current time and process ID are used.
6595 if (!$main::done_seed_random) {
6596 if (open(RANDOM, "/dev/urandom")) {
6598 read(RANDOM, $buf, 4);
6600 srand(time() ^ $$ ^ $buf);
6605 $main::done_seed_random = 1;
6609 =head2 disk_usage_kb(directory)
6611 Returns the number of kB used by some directory and all subdirs. Implemented
6612 by calling the C<du -k> command.
6617 my $dir = &translate_filename($_[0]);
6619 my $ex = &execute_command("du -sk ".quotemeta($dir), undef, \$out, undef, 0, 1);
6621 &execute_command("du -s ".quotemeta($dir), undef, \$out, undef, 0, 1);
6623 return $out =~ /^([0-9]+)/ ? $1 : "???";
6626 =head2 recursive_disk_usage(directory, [skip-regexp], [only-regexp])
6628 Returns the number of bytes taken up by all files in some directory and all
6629 sub-directories, by summing up their lengths. The disk_usage_kb is more
6630 reflective of reality, as the filesystem typically pads file sizes to 1k or
6634 sub recursive_disk_usage
6636 my $dir = &translate_filename($_[0]);
6643 my @st = stat($dir);
6649 my @files = readdir(DIR);
6651 foreach my $f (@files) {
6652 next if ($f eq "." || $f eq "..");
6653 next if ($skip && $f =~ /$skip/);
6654 next if ($only && $f !~ /$only/);
6655 $rv += &recursive_disk_usage("$dir/$f", $skip, $only);
6661 =head2 help_search_link(term, [ section, ... ] )
6663 Returns HTML for a link to the man module for searching local and online
6664 docs for various search terms. The term parameter can either be a single
6665 word like 'bind', or a space-separated list of words. This function is typically
6666 used by modules that want to refer users to additional documentation in man
6667 pages or local system doc files.
6670 sub help_search_link
6672 if (&foreign_available("man") && !$tconfig{'nosearch'}) {
6673 my $for = &urlize(shift(@_));
6674 return "<a href='$gconfig{'webprefix'}/man/search.cgi?".
6675 join("&", map { "section=$_" } @_)."&".
6676 "for=$for&exact=1&check=".&get_module_name()."'>".
6677 $text{'helpsearch'}."</a>\n";
6684 =head2 make_http_connection(host, port, ssl, method, page, [&headers])
6686 Opens a connection to some HTTP server, maybe through a proxy, and returns
6687 a handle object. The handle can then be used to send additional headers
6688 and read back a response. If anything goes wrong, returns an error string.
6689 The parameters are :
6691 =item host - Hostname or IP address of the webserver to connect to.
6693 =item port - HTTP port number to connect to.
6695 =item ssl - Set to 1 to connect in SSL mode.
6697 =item method - HTTP method, like GET or POST.
6699 =item page - Page to request on the webserver, like /foo/index.html
6701 =item headers - Array ref of additional HTTP headers, each of which is a 2-element array ref.
6704 sub make_http_connection
6706 my ($host, $port, $ssl, $method, $page, $headers) = @_;
6709 foreach my $h (@$headers) {
6710 $htxt .= $h->[0].": ".$h->[1]."\r\n";
6714 if (&is_readonly_mode()) {
6715 return "HTTP connections not allowed in readonly mode";
6717 my $rv = { 'fh' => time().$$ };
6720 eval "use Net::SSLeay";
6721 $@ && return $text{'link_essl'};
6722 eval "Net::SSLeay::SSLeay_add_ssl_algorithms()";
6723 eval "Net::SSLeay::load_error_strings()";
6724 $rv->{'ssl_ctx'} = Net::SSLeay::CTX_new() ||
6725 return "Failed to create SSL context";
6726 $rv->{'ssl_con'} = Net::SSLeay::new($rv->{'ssl_ctx'}) ||
6727 return "Failed to create SSL connection";
6729 if ($gconfig{'http_proxy'} =~ /^http:\/\/(\S+):(\d+)/ &&
6730 !&no_proxy($host)) {
6733 &open_socket($1, $2, $rv->{'fh'}, \$error);
6736 my $fh = $rv->{'fh'};
6737 print $fh "CONNECT $host:$port HTTP/1.0\r\n";
6738 if ($gconfig{'proxy_user'}) {
6739 my $auth = &encode_base64(
6740 "$gconfig{'proxy_user'}:".
6741 "$gconfig{'proxy_pass'}");
6742 $auth =~ tr/\r\n//d;
6743 print $fh "Proxy-Authorization: Basic $auth\r\n";
6747 if ($line =~ /^HTTP(\S+)\s+(\d+)\s+(.*)/) {
6748 return "Proxy error : $3" if ($2 != 200);
6751 return "Proxy error : $line";
6756 elsif (!$gconfig{'proxy_fallback'}) {
6757 # Connection to proxy failed - give up
6764 &open_socket($host, $port, $rv->{'fh'}, \$error);
6765 return $error if ($error);
6767 Net::SSLeay::set_fd($rv->{'ssl_con'}, fileno($rv->{'fh'}));
6768 Net::SSLeay::connect($rv->{'ssl_con'}) ||
6769 return "SSL connect() failed";
6770 my $rtxt = "$method $page HTTP/1.0\r\n".$htxt;
6771 Net::SSLeay::write($rv->{'ssl_con'}, $rtxt);
6774 # Plain HTTP request
6776 if ($gconfig{'http_proxy'} =~ /^http:\/\/(\S+):(\d+)/ &&
6777 !&no_proxy($host)) {
6780 &open_socket($1, $2, $rv->{'fh'}, \$error);
6784 my $fh = $rv->{'fh'};
6785 my $rtxt = $method." ".
6786 "http://$host:$port$page HTTP/1.0\r\n";
6787 if ($gconfig{'proxy_user'}) {
6788 my $auth = &encode_base64(
6789 "$gconfig{'proxy_user'}:".
6790 "$gconfig{'proxy_pass'}");
6791 $auth =~ tr/\r\n//d;
6792 $rtxt .= "Proxy-Authorization: Basic $auth\r\n";
6797 elsif (!$gconfig{'proxy_fallback'}) {
6802 # Connecting directly
6804 &open_socket($host, $port, $rv->{'fh'}, \$error);
6805 return $error if ($error);
6806 my $fh = $rv->{'fh'};
6807 my $rtxt = "$method $page HTTP/1.0\r\n".$htxt;
6814 =head2 read_http_connection(&handle, [bytes])
6816 Reads either one line or up to the specified number of bytes from the handle,
6817 originally supplied by make_http_connection.
6820 sub read_http_connection
6824 if ($h->{'ssl_con'}) {
6827 while(($idx = index($h->{'buffer'}, "\n")) < 0) {
6828 # need to read more..
6829 if (!($more = Net::SSLeay::read($h->{'ssl_con'}))) {
6831 $rv = $h->{'buffer'};
6832 delete($h->{'buffer'});
6835 $h->{'buffer'} .= $more;
6837 $rv = substr($h->{'buffer'}, 0, $idx+1);
6838 $h->{'buffer'} = substr($h->{'buffer'}, $idx+1);
6841 if (length($h->{'buffer'})) {
6842 $rv = $h->{'buffer'};
6843 delete($h->{'buffer'});
6846 $rv = Net::SSLeay::read($h->{'ssl_con'}, $_[1]);
6852 read($h->{'fh'}, $rv, $_[1]) > 0 || return undef;
6855 my $fh = $h->{'fh'};
6859 $rv = undef if ($rv eq "");
6863 =head2 write_http_connection(&handle, [data+])
6865 Writes the given data to the given HTTP connection handle.
6868 sub write_http_connection
6871 my $fh = $h->{'fh'};
6873 if ($h->{'ssl_ctx'}) {
6874 foreach my $s (@_) {
6875 my $ok = Net::SSLeay::write($h->{'ssl_con'}, $s);
6876 $allok = 0 if (!$ok);
6880 my $ok = (print $fh @_);
6881 $allok = 0 if (!$ok);
6886 =head2 close_http_connection(&handle)
6888 Closes a connection to an HTTP server, identified by the given handle.
6891 sub close_http_connection
6897 =head2 clean_environment
6899 Deletes any environment variables inherited from miniserv so that they
6900 won't be passed to programs started by webmin. This is useful when calling
6901 programs that check for CGI-related environment variables and modify their
6902 behaviour, and to avoid passing sensitive variables to un-trusted programs.
6905 sub clean_environment
6907 %UNCLEAN_ENV = %ENV;
6908 foreach my $k (keys %ENV) {
6909 if ($k =~ /^(HTTP|VIRTUALSERVER|QUOTA|USERADMIN)_/) {
6913 foreach my $e ('WEBMIN_CONFIG', 'SERVER_NAME', 'CONTENT_TYPE', 'REQUEST_URI',
6914 'PATH_INFO', 'WEBMIN_VAR', 'REQUEST_METHOD', 'GATEWAY_INTERFACE',
6915 'QUERY_STRING', 'REMOTE_USER', 'SERVER_SOFTWARE', 'SERVER_PROTOCOL',
6916 'REMOTE_HOST', 'SERVER_PORT', 'DOCUMENT_ROOT', 'SERVER_ROOT',
6917 'MINISERV_CONFIG', 'SCRIPT_NAME', 'SERVER_ADMIN', 'CONTENT_LENGTH',
6918 'HTTPS', 'FOREIGN_MODULE_NAME', 'FOREIGN_ROOT_DIRECTORY',
6919 'SCRIPT_FILENAME', 'PATH_TRANSLATED', 'BASE_REMOTE_USER',
6920 'DOCUMENT_REALROOT', 'MINISERV_CONFIG', 'MYSQL_PWD',
6926 =head2 reset_environment
6928 Puts the environment back how it was before clean_environment was callled.
6931 sub reset_environment
6934 foreach my $k (keys %UNCLEAN_ENV) {
6935 $ENV{$k} = $UNCLEAN_ENV{$k};
6937 undef(%UNCLEAN_ENV);
6941 =head2 progress_callback
6943 Never called directly, but useful for passing to &http_download to print
6944 out progress of an HTTP request.
6947 sub progress_callback
6949 if (defined(&theme_progress_callback)) {
6950 # Call the theme override
6951 return &theme_progress_callback(@_);
6955 print $progress_callback_prefix;
6957 $progress_size = $_[1];
6958 $progress_step = int($_[1] / 10);
6959 print &text('progress_size2', $progress_callback_url,
6960 &nice_size($progress_size)),"<br>\n";
6963 $progress_size = undef;
6964 print &text('progress_nosize', $progress_callback_url),"<br>\n";
6966 $last_progress_time = $last_progress_size = undef;
6968 elsif ($_[0] == 3) {
6970 my $sp = $progress_callback_prefix.(" " x 5);
6971 if ($progress_size) {
6972 # And we have a size to compare against
6973 my $st = int(($_[1] * 10) / $progress_size);
6974 my $time_now = time();
6975 if ($st != $progress_step ||
6976 $time_now - $last_progress_time > 60) {
6977 # Show progress every 10% or 60 seconds
6978 print $sp,&text('progress_datan', &nice_size($_[1]),
6979 int($_[1]*100/$progress_size)),"<br>\n";
6980 $last_progress_time = $time_now;
6982 $progress_step = $st;
6985 # No total size .. so only show in 100k jumps
6986 if ($_[1] > $last_progress_size+100*1024) {
6987 print $sp,&text('progress_data2n',
6988 &nice_size($_[1])),"<br>\n";
6989 $last_progress_size = $_[1];
6993 elsif ($_[0] == 4) {
6994 # All done downloading
6995 print $progress_callback_prefix,&text('progress_done'),"<br>\n";
6997 elsif ($_[0] == 5) {
6998 # Got new location after redirect
6999 $progress_callback_url = $_[1];
7001 elsif ($_[0] == 6) {
7003 $progress_callback_url = $_[1];
7004 print &text('progress_incache', $progress_callback_url),"<br>\n";
7008 =head2 switch_to_remote_user
7010 Changes the user and group of the current process to that of the unix user
7011 with the same name as the current webmin login, or fails if there is none.
7012 This should be called by Usermin module scripts that only need to run with
7013 limited permissions.
7016 sub switch_to_remote_user
7018 @remote_user_info = $remote_user ? getpwnam($remote_user) :
7020 @remote_user_info || &error(&text('switch_remote_euser', $remote_user));
7021 &create_missing_homedir(\@remote_user_info);
7023 &switch_to_unix_user(\@remote_user_info);
7024 $ENV{'USER'} = $ENV{'LOGNAME'} = $remote_user;
7025 $ENV{'HOME'} = $remote_user_info[7];
7027 # Export global variables to caller
7028 if ($main::export_to_caller) {
7029 my ($callpkg) = caller();
7030 eval "\@${callpkg}::remote_user_info = \@remote_user_info";
7034 =head2 switch_to_unix_user(&user-details)
7036 Switches the current process to the UID and group ID from the given list
7037 of user details, which must be in the format returned by getpwnam.
7040 sub switch_to_unix_user
7043 if (!defined($uinfo->[0])) {
7044 # No username given, so just use given GID
7045 ($(, $)) = ( $uinfo->[3], "$uinfo->[3] $uinfo->[3]" );
7048 # Use all groups from user
7049 ($(, $)) = ( $uinfo->[3],
7050 "$uinfo->[3] ".join(" ", $uinfo->[3],
7051 &other_groups($uinfo->[0])) );
7054 POSIX::setuid($uinfo->[2]);
7056 if ($< != $uinfo->[2] || $> != $uinfo->[2]) {
7057 ($>, $<) = ( $uinfo->[2], $uinfo->[2] );
7061 =head2 eval_as_unix_user(username, &code)
7063 Runs some code fragment with the effective UID and GID switch to that
7064 of the given Unix user, so that file IO takes place with his permissions.
7068 sub eval_as_unix_user
7070 my ($user, $code) = @_;
7071 my @uinfo = getpwnam($user);
7072 if (!scalar(@uinfo)) {
7073 &error("eval_as_unix_user called with invalid user $user");
7075 $) = $uinfo[3]." ".join(" ", $uinfo[3], &other_groups($user));
7079 local $main::error_must_die = 1;
7086 $err =~ s/\s+at\s+(\/\S+)\s+line\s+(\d+)\.?//;
7089 return wantarray ? @rv : $rv[0];
7092 =head2 create_user_config_dirs
7094 Creates per-user config directories and sets $user_config_directory and
7095 $user_module_config_directory to them. Also reads per-user module configs
7096 into %userconfig. This should be called by Usermin module scripts that need
7097 to store per-user preferences or other settings.
7100 sub create_user_config_dirs
7102 return if (!$gconfig{'userconfig'});
7103 my @uinfo = @remote_user_info ? @remote_user_info : getpwnam($remote_user);
7104 return if (!@uinfo || !$uinfo[7]);
7105 &create_missing_homedir(\@uinfo);
7106 $user_config_directory = "$uinfo[7]/$gconfig{'userconfig'}";
7107 if (!-d $user_config_directory) {
7108 mkdir($user_config_directory, 0700) ||
7109 &error("Failed to create $user_config_directory : $!");
7110 if ($< == 0 && $uinfo[2]) {
7111 chown($uinfo[2], $uinfo[3], $user_config_directory);
7114 if (&get_module_name()) {
7115 $user_module_config_directory = $user_config_directory."/".
7117 if (!-d $user_module_config_directory) {
7118 mkdir($user_module_config_directory, 0700) ||
7119 &error("Failed to create $user_module_config_directory : $!");
7120 if ($< == 0 && $uinfo[2]) {
7121 chown($uinfo[2], $uinfo[3], $user_config_directory);
7125 &read_file_cached("$module_root_directory/defaultuconfig",
7127 &read_file_cached("$module_config_directory/uconfig", \%userconfig);
7128 &read_file_cached("$user_module_config_directory/config",
7132 # Export global variables to caller
7133 if ($main::export_to_caller) {
7134 my ($callpkg) = caller();
7135 foreach my $v ('$user_config_directory',
7136 '$user_module_config_directory', '%userconfig') {
7137 my ($vt, $vn) = split('', $v, 2);
7138 eval "${vt}${callpkg}::${vn} = ${vt}${vn}";
7143 =head2 create_missing_homedir(&uinfo)
7145 If auto homedir creation is enabled, create one for this user if needed.
7146 For internal use only.
7149 sub create_missing_homedir
7152 if (!-e $uinfo->[7] && $gconfig{'create_homedir'}) {
7153 # Use has no home dir .. make one
7154 system("mkdir -p ".quotemeta($uinfo->[7]));
7155 chown($uinfo->[2], $uinfo->[3], $uinfo->[7]);
7156 if ($gconfig{'create_homedir_perms'} ne '') {
7157 chmod(oct($gconfig{'create_homedir_perms'}), $uinfo->[7]);
7162 =head2 filter_javascript(text)
7164 Disables all javascript <script>, onClick= and so on tags in the given HTML,
7165 and returns the new HTML. Useful for displaying HTML from an un-trusted source.
7168 sub filter_javascript
7171 $rv =~ s/<\s*script[^>]*>([\000-\377]*?)<\s*\/script\s*>//gi;
7172 $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;
7173 $rv =~ s/(javascript:)/x$1/gi;
7174 $rv =~ s/(vbscript:)/x$1/gi;
7178 =head2 resolve_links(path)
7180 Given a path that may contain symbolic links, returns the real path.
7186 $path =~ s/\/+/\//g;
7187 $path =~ s/\/$// if ($path ne "/");
7188 my @p = split(/\/+/, $path);
7190 for(my $i=0; $i<@p; $i++) {
7191 my $sofar = "/".join("/", @p[0..$i]);
7192 my $lnk = readlink($sofar);
7193 if ($lnk eq $sofar) {
7194 # Link to itself! Cannot do anything more really ..
7197 elsif ($lnk =~ /^\//) {
7198 # Link is absolute..
7199 return &resolve_links($lnk."/".join("/", @p[$i+1 .. $#p]));
7203 return &resolve_links("/".join("/", @p[0..$i-1])."/".$lnk."/".join("/", @p[$i+1 .. $#p]));
7209 =head2 simplify_path(path, bogus)
7211 Given a path, maybe containing elements ".." and "." , convert it to a
7212 clean, absolute form. Returns undef if this is not possible.
7220 my @bits = split(/\/+/, $dir);
7223 foreach my $b (@bits) {
7227 elsif ($b eq "..") {
7229 if (scalar(@fixedbits) == 0) {
7230 # Cannot! Already at root!
7237 push(@fixedbits, $b);
7240 return "/".join('/', @fixedbits);
7243 =head2 same_file(file1, file2)
7245 Returns 1 if two files are actually the same
7250 return 1 if ($_[0] eq $_[1]);
7251 return 0 if ($_[0] !~ /^\// || $_[1] !~ /^\//);
7252 my @stat1 = $stat_cache{$_[0]} ? @{$stat_cache{$_[0]}}
7253 : (@{$stat_cache{$_[0]}} = stat($_[0]));
7254 my @stat2 = $stat_cache{$_[1]} ? @{$stat_cache{$_[1]}}
7255 : (@{$stat_cache{$_[1]}} = stat($_[1]));
7256 return 0 if (!@stat1 || !@stat2);
7257 return $stat1[0] == $stat2[0] && $stat1[1] == $stat2[1];
7260 =head2 flush_webmin_caches
7262 Clears all in-memory and on-disk caches used by Webmin.
7265 sub flush_webmin_caches
7267 undef(%main::read_file_cache);
7268 undef(%main::acl_hash_cache);
7269 undef(%main::acl_array_cache);
7270 undef(%main::has_command_cache);
7271 undef(@main::list_languages_cache);
7272 undef($main::got_list_usermods_cache);
7273 undef(@main::list_usermods_cache);
7274 undef(%main::foreign_installed_cache);
7275 unlink("$config_directory/module.infos.cache");
7276 &get_all_module_infos();
7279 =head2 list_usermods
7281 Returns a list of additional module restrictions. For internal use in
7287 if (!$main::got_list_usermods_cache) {
7288 @main::list_usermods_cache = ( );
7290 open(USERMODS, "$config_directory/usermin.mods");
7292 if (/^([^:]+):(\+|-|):(.*)/) {
7293 push(@main::list_usermods_cache,
7294 [ $1, $2, [ split(/\s+/, $3) ] ]);
7298 $main::got_list_usermods_cache = 1;
7300 return @main::list_usermods_cache;
7303 =head2 available_usermods(&allmods, &usermods)
7305 Returns a list of modules that are available to the given user, based
7306 on usermod additional/subtractions. For internal use by Usermin only.
7309 sub available_usermods
7311 return @{$_[0]} if (!@{$_[1]});
7313 my %mods = map { $_->{'dir'}, 1 } @{$_[0]};
7314 my @uinfo = @remote_user_info;
7315 @uinfo = getpwnam($remote_user) if (!@uinfo);
7316 foreach my $u (@{$_[1]}) {
7318 if ($u->[0] eq "*" || $u->[0] eq $remote_user) {
7321 elsif ($u->[0] =~ /^\@(.*)$/) {
7322 # Check for group membership
7323 my @ginfo = getgrnam($1);
7324 $applies++ if (@ginfo && ($ginfo[2] == $uinfo[3] ||
7325 &indexof($remote_user, split(/\s+/, $ginfo[3])) >= 0));
7327 elsif ($u->[0] =~ /^\//) {
7328 # Check users and groups in file
7330 open(USERFILE, $u->[0]);
7333 if ($_ eq $remote_user) {
7336 elsif (/^\@(.*)$/) {
7337 my @ginfo = getgrnam($1);
7339 if (@ginfo && ($ginfo[2] == $uinfo[3] ||
7340 &indexof($remote_user,
7341 split(/\s+/, $ginfo[3])) >= 0));
7348 if ($u->[1] eq "+") {
7349 map { $mods{$_}++ } @{$u->[2]};
7351 elsif ($u->[1] eq "-") {
7352 map { delete($mods{$_}) } @{$u->[2]};
7356 map { $mods{$_}++ } @{$u->[2]};
7360 return grep { $mods{$_->{'dir'}} } @{$_[0]};
7363 =head2 get_available_module_infos(nocache)
7365 Returns a list of modules available to the current user, based on
7366 operating system support, access control and usermod restrictions. Useful
7367 in themes that need to display a list of modules the user can use.
7368 Each element of the returned array is a hash reference in the same format as
7369 returned by get_module_info.
7372 sub get_available_module_infos
7375 &read_acl(\%acl, \%uacl, [ $base_remote_user ]);
7376 my $risk = $gconfig{'risk_'.$base_remote_user};
7378 foreach my $minfo (&get_all_module_infos($_[0])) {
7379 next if (!&check_os_support($minfo));
7381 # Check module risk level
7382 next if ($risk ne 'high' && $minfo->{'risk'} &&
7383 $minfo->{'risk'} !~ /$risk/);
7387 next if (!$acl{$base_remote_user,$minfo->{'dir'}} &&
7388 !$acl{$base_remote_user,"*"});
7390 next if (&is_readonly_mode() && !$minfo->{'readonly'});
7394 # Check usermod restrictions
7395 my @usermods = &list_usermods();
7396 @rv = sort { $a->{'desc'} cmp $b->{'desc'} }
7397 &available_usermods(\@rv, \@usermods);
7399 # Check RBAC restrictions
7401 foreach my $m (@rv) {
7402 if (&supports_rbac($m->{'dir'}) &&
7403 &use_rbac_module_acl(undef, $m->{'dir'})) {
7404 local $rbacs = &get_rbac_module_acl($remote_user,
7412 # Module or system doesn't support RBAC
7413 push(@rbacrv, $m) if (!$gconfig{'rbacdeny_'.$base_remote_user});
7419 if (defined(&theme_foreign_available)) {
7420 foreach my $m (@rbacrv) {
7421 if (&theme_foreign_available($m->{'dir'})) {
7430 # Check licence module vetos
7432 if ($main::licence_module) {
7433 foreach my $m (@themerv) {
7434 if (&foreign_call($main::licence_module,
7435 "check_module_licence", $m->{'dir'})) {
7447 =head2 get_visible_module_infos(nocache)
7449 Like get_available_module_infos, but excludes hidden modules from the list.
7450 Each element of the returned array is a hash reference in the same format as
7451 returned by get_module_info.
7454 sub get_visible_module_infos
7457 my $pn = &get_product_name();
7458 return grep { !$_->{'hidden'} &&
7459 !$_->{$pn.'_hidden'} } &get_available_module_infos($nocache);
7462 =head2 get_visible_modules_categories(nocache)
7464 Returns a list of Webmin module categories, each of which is a hash ref
7465 with 'code', 'desc' and 'modules' keys. The modules value is an array ref
7466 of modules in the category, in the format returned by get_module_info.
7467 Un-used modules are automatically assigned to the 'unused' category, and
7468 those with no category are put into 'others'.
7471 sub get_visible_modules_categories
7474 my @mods = &get_visible_module_infos($nocache);
7476 if (&get_product_name() eq 'webmin') {
7477 @unmods = grep { $_->{'installed'} eq '0' } @mods;
7478 @mods = grep { $_->{'installed'} ne '0' } @mods;
7480 my %cats = &list_categories(\@mods);
7482 foreach my $c (keys %cats) {
7483 my $cat = { 'code' => $c || 'other',
7484 'desc' => $cats{$c} };
7485 $cat->{'modules'} = [ grep { $_->{'category'} eq $c } @mods ];
7488 @rv = sort { ($b->{'code'} eq "others" ? "" : $b->{'code'}) cmp
7489 ($a->{'code'} eq "others" ? "" : $a->{'code'}) } @rv;
7491 # Add un-installed modules in magic category
7492 my $cat = { 'code' => 'unused',
7493 'desc' => $text{'main_unused'},
7495 'modules' => \@unmods };
7501 =head2 is_under_directory(directory, file)
7503 Returns 1 if the given file is under the specified directory, 0 if not.
7504 Symlinks are taken into account in the file to find it's 'real' location.
7507 sub is_under_directory
7509 my ($dir, $file) = @_;
7510 return 1 if ($dir eq "/");
7511 return 0 if ($file =~ /\.\./);
7512 my $ld = &resolve_links($dir);
7514 return &is_under_directory($ld, $file);
7516 my $lp = &resolve_links($file);
7518 return &is_under_directory($dir, $lp);
7520 return 0 if (length($file) < length($dir));
7521 return 1 if ($dir eq $file);
7523 return substr($file, 0, length($dir)) eq $dir;
7526 =head2 parse_http_url(url, [basehost, baseport, basepage, basessl])
7528 Given an absolute URL, returns the host, port, page and ssl flag components.
7529 If a username and password are given before the hostname, return those too.
7530 Relative URLs can also be parsed, if the base information is provided.
7535 if ($_[0] =~ /^(http|https):\/\/([^\@]+\@)?\[([^\]]+)\](:(\d+))?(\/\S*)?$/ ||
7536 $_[0] =~ /^(http|https):\/\/([^\@]+\@)?([^:\/]+)(:(\d+))?(\/\S*)?$/) {
7538 my $ssl = $1 eq 'https';
7539 my @rv = ($3, $4 ? $5 : $ssl ? 443 : 80, $6 || "/", $ssl);
7540 if ($2 =~ /^([^:]+):(\S+)\@/) {
7549 elsif ($_[0] =~ /^\/\S*$/) {
7550 # A relative to the server URL
7551 return ($_[1], $_[2], $_[0], $_[4], $_[5], $_[6]);
7554 # A relative to the directory URL
7556 $page =~ s/[^\/]+$//;
7557 return ($_[1], $_[2], $page.$_[0], $_[4], $_[5], $_[6]);
7561 =head2 check_clicks_function
7563 Returns HTML for a JavaScript function called check_clicks that returns
7564 true when first called, but false subsequently. Useful on onClick for
7565 critical buttons. Deprecated, as this method of preventing duplicate actions
7569 sub check_clicks_function
7574 function check_clicks(form)
7581 for(i=0; i<form.length; i++)
7582 form.elements[i].disabled = true;
7591 =head2 load_entities_map
7593 Returns a hash ref containing mappings between HTML entities (like ouml) and
7594 ascii values (like 246). Mainly for internal use.
7597 sub load_entities_map
7599 if (!%entities_map_cache) {
7601 open(EMAP, "$root_directory/entities_map.txt");
7603 if (/^(\d+)\s+(\S+)/) {
7604 $entities_map_cache{$2} = $1;
7609 return \%entities_map_cache;
7612 =head2 entities_to_ascii(string)
7614 Given a string containing HTML entities like ö and 7, replace them
7615 with their ASCII equivalents.
7618 sub entities_to_ascii
7621 my $emap = &load_entities_map();
7622 $str =~ s/&([a-z]+);/chr($emap->{$1})/ge;
7623 $str =~ s/&#(\d+);/chr($1)/ge;
7627 =head2 get_product_name
7629 Returns either 'webmin' or 'usermin', depending on which program the current
7630 module is in. Useful for modules that can be installed into either.
7633 sub get_product_name
7635 return $gconfig{'product'} if (defined($gconfig{'product'}));
7636 return defined($gconfig{'userconfig'}) ? 'usermin' : 'webmin';
7641 Returns the character set for the current language, such as iso-8859-1.
7646 my $charset = defined($gconfig{'charset'}) ? $gconfig{'charset'} :
7647 $current_lang_info->{'charset'} ?
7648 $current_lang_info->{'charset'} : $default_charset;
7652 =head2 get_display_hostname
7654 Returns the system's hostname for UI display purposes. This may be different
7655 from the actual hostname if you administrator has configured it so in the
7656 Webmin Configuration module.
7659 sub get_display_hostname
7661 if ($gconfig{'hostnamemode'} == 0) {
7662 return &get_system_hostname();
7664 elsif ($gconfig{'hostnamemode'} == 3) {
7665 return $gconfig{'hostnamedisplay'};
7668 my $h = $ENV{'HTTP_HOST'};
7670 if ($gconfig{'hostnamemode'} == 2) {
7671 $h =~ s/^(www|ftp|mail)\.//i;
7677 =head2 save_module_config([&config], [modulename])
7679 Saves the configuration for some module. The config parameter is an optional
7680 hash reference of names and values to save, which defaults to the global
7681 %config hash. The modulename parameter is the module to update the config
7682 file, which defaults to the current module.
7685 sub save_module_config
7687 my $c = $_[0] || { &get_module_variable('%config') };
7688 my $m = defined($_[1]) ? $_[1] : &get_module_name();
7689 &write_file("$config_directory/$m/config", $c);
7692 =head2 save_user_module_config([&config], [modulename])
7694 Saves the user's Usermin preferences for some module. The config parameter is
7695 an optional hash reference of names and values to save, which defaults to the
7696 global %userconfig hash. The modulename parameter is the module to update the
7697 config file, which defaults to the current module.
7700 sub save_user_module_config
7702 my $c = $_[0] || { &get_module_variable('%userconfig') };
7703 my $m = $_[1] || &get_module_name();
7704 my $ucd = $user_config_directory;
7706 my @uinfo = @remote_user_info ? @remote_user_info
7707 : getpwnam($remote_user);
7708 return if (!@uinfo || !$uinfo[7]);
7709 $ucd = "$uinfo[7]/$gconfig{'userconfig'}";
7711 &write_file("$ucd/$m/config", $c);
7714 =head2 nice_size(bytes, [min])
7716 Converts a number of bytes into a number followed by a suffix like GB, MB
7717 or kB. Rounding is to two decimal digits. The optional min parameter sets the
7718 smallest units to use - so you could pass 1024*1024 to never show bytes or kB.
7723 my ($units, $uname);
7724 if (abs($_[0]) > 1024*1024*1024*1024 || $_[1] >= 1024*1024*1024*1024) {
7725 $units = 1024*1024*1024*1024;
7728 elsif (abs($_[0]) > 1024*1024*1024 || $_[1] >= 1024*1024*1024) {
7729 $units = 1024*1024*1024;
7732 elsif (abs($_[0]) > 1024*1024 || $_[1] >= 1024*1024) {
7736 elsif (abs($_[0]) > 1024 || $_[1] >= 1024) {
7744 my $sz = sprintf("%.2f", ($_[0]*1.0 / $units));
7746 return $sz." ".$uname;
7749 =head2 get_perl_path
7751 Returns the path to Perl currently in use, such as /usr/bin/perl.
7756 if (open(PERL, "$config_directory/perl-path")) {
7762 return $^X if (-x $^X);
7763 return &has_command("perl");
7766 =head2 get_goto_module([&mods])
7768 Returns the details of a module that the current user should be re-directed
7769 to after logging in, or undef if none. Useful for themes.
7774 my @mods = $_[0] ? @{$_[0]} : &get_visible_module_infos();
7775 if ($gconfig{'gotomodule'}) {
7776 my ($goto) = grep { $_->{'dir'} eq $gconfig{'gotomodule'} } @mods;
7777 return $goto if ($goto);
7779 if (@mods == 1 && $gconfig{'gotoone'}) {
7785 =head2 select_all_link(field, form, [text])
7787 Returns HTML for a 'Select all' link that uses Javascript to select
7788 multiple checkboxes with the same name. The parameters are :
7790 =item field - Name of the checkbox inputs.
7792 =item form - Index of the form on the page.
7794 =item text - Message for the link, defaulting to 'Select all'.
7799 return &theme_select_all_link(@_) if (defined(&theme_select_all_link));
7800 my ($field, $form, $text) = @_;
7802 $text ||= $text{'ui_selall'};
7803 return "<a class='select_all' href='#' onClick='var ff = document.forms[$form].$field; ff.checked = true; for(i=0; i<ff.length; i++) { if (!ff[i].disabled) { ff[i].checked = true; } } return false'>$text</a>";
7806 =head2 select_invert_link(field, form, text)
7808 Returns HTML for an 'Invert selection' link that uses Javascript to invert the
7809 selection on multiple checkboxes with the same name. The parameters are :
7811 =item field - Name of the checkbox inputs.
7813 =item form - Index of the form on the page.
7815 =item text - Message for the link, defaulting to 'Invert selection'.
7818 sub select_invert_link
7820 return &theme_select_invert_link(@_) if (defined(&theme_select_invert_link));
7821 my ($field, $form, $text) = @_;
7823 $text ||= $text{'ui_selinv'};
7824 return "<a class='select_invert' href='#' onClick='var ff = document.forms[$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>";
7827 =head2 select_rows_link(field, form, text, &rows)
7829 Returns HTML for a link that uses Javascript to select rows with particular
7830 values for their checkboxes. The parameters are :
7832 =item field - Name of the checkbox inputs.
7834 =item form - Index of the form on the page.
7836 =item text - Message for the link, de
7838 =item rows - Reference to an array of 1 or 0 values, indicating which rows to check.
7841 sub select_rows_link
7843 return &theme_select_rows_link(@_) if (defined(&theme_select_rows_link));
7844 my ($field, $form, $text, $rows) = @_;
7846 my $js = "var sel = { ".join(",", map { "\""."e_escape($_)."\":1" } @$rows)." }; ";
7847 $js .= "for(var i=0; i<document.forms[$form].${field}.length; i++) { var r = document.forms[$form].${field}[i]; r.checked = sel[r.value]; } ";
7848 $js .= "return false;";
7849 return "<a href='#' onClick='$js'>$text</a>";
7852 =head2 check_pid_file(file)
7854 Given a pid file, returns the PID it contains if the process is running.
7859 open(PIDFILE, $_[0]) || return undef;
7860 my $pid = <PIDFILE>;
7862 $pid =~ /^\s*(\d+)/ || return undef;
7863 kill(0, $1) || return undef;
7869 Return the local os-specific library name to this module. For internal use only.
7874 my $mn = &get_module_name();
7875 my $md = &module_root_directory($mn);
7876 if (-r "$md/$mn-$gconfig{'os_type'}-$gconfig{'os_version'}-lib.pl") {
7877 return "$mn-$gconfig{'os_type'}-$gconfig{'os_version'}-lib.pl";
7879 elsif (-r "$md/$mn-$gconfig{'os_type'}-lib.pl") {
7880 return "$mn-$gconfig{'os_type'}-lib.pl";
7882 elsif (-r "$md/$mn-generic-lib.pl") {
7883 return "$mn-generic-lib.pl";
7890 =head2 module_root_directory(module)
7892 Given a module name, returns its root directory. On a typical Webmin install,
7893 all modules are under the same directory - but it is theoretically possible to
7897 sub module_root_directory
7899 my $d = ref($_[0]) ? $_[0]->{'dir'} : $_[0];
7900 if (@root_directories > 1) {
7901 foreach my $r (@root_directories) {
7907 return "$root_directories[0]/$d";
7910 =head2 list_mime_types
7912 Returns a list of all known MIME types and their extensions, as a list of hash
7913 references with keys :
7915 =item type - The MIME type, like text/plain.
7917 =item exts - A list of extensions, like .doc and .avi.
7919 =item desc - A human-readable description for the MIME type.
7924 if (!@list_mime_types_cache) {
7926 open(MIME, "$root_directory/mime.types");
7930 if (s/#\s*(.*)$//g) {
7933 my ($type, @exts) = split(/\s+/);
7935 push(@list_mime_types_cache, { 'type' => $type,
7942 return @list_mime_types_cache;
7945 =head2 guess_mime_type(filename, [default])
7947 Given a file name like xxx.gif or foo.html, returns a guessed MIME type.
7948 The optional default parameter sets a default type of use if none is found,
7949 which defaults to application/octet-stream.
7954 if ($_[0] =~ /\.([A-Za-z0-9\-]+)$/) {
7956 foreach my $t (&list_mime_types()) {
7957 foreach my $e (@{$t->{'exts'}}) {
7958 return $t->{'type'} if (lc($e) eq lc($ext));
7962 return @_ > 1 ? $_[1] : "application/octet-stream";
7965 =head2 open_tempfile([handle], file, [no-error], [no-tempfile], [safe?])
7967 Opens a file handle for writing to a temporary file, which will only be
7968 renamed over the real file when the handle is closed. This allows critical
7969 files like /etc/shadow to be updated safely, even if writing fails part way
7970 through due to lack of disk space. The parameters are :
7972 =item handle - File handle to open, as you would use in Perl's open function.
7974 =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.
7976 =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 $! with the error code.
7978 =item no-tempfile - If set to 1, writing will be direct to the file instead of using a temporary file.
7980 =item safe - Indicates to users in read-only mode that this write is safe and non-destructive.
7986 # Just getting a temp file
7987 if (!defined($main::open_tempfiles{$_[0]})) {
7988 $_[0] =~ /^(.*)\/(.*)$/ || return $_[0];
7989 my $dir = $1 || "/";
7990 my $tmp = "$dir/$2.webmintmp.$$";
7991 $main::open_tempfiles{$_[0]} = $tmp;
7992 push(@main::temporary_files, $tmp);
7994 return $main::open_tempfiles{$_[0]};
7998 my ($fh, $file, $noerror, $notemp, $safe) = @_;
7999 $fh = &callers_package($fh);
8001 my %gaccess = &get_module_acl(undef, "");
8002 my $db = $gconfig{'debug_what_write'};
8003 if ($file =~ /\r|\n|\0/) {
8004 if ($noerror) { return 0; }
8005 else { &error("Filename contains invalid characters"); }
8007 if (&is_readonly_mode() && $file =~ />/ && !$safe) {
8008 # Read-only mode .. veto all writes
8009 print STDERR "vetoing write to $file\n";
8010 return open($fh, ">$null_file");
8012 elsif ($file =~ /^(>|>>|)nul$/i) {
8013 # Write to Windows null device
8014 &webmin_debug_log($1 eq ">" ? "WRITE" :
8015 $1 eq ">>" ? "APPEND" : "READ", "nul") if ($db);
8017 elsif ($file =~ /^(>|>>)(\/dev\/.*)/ || lc($file) eq "nul") {
8018 # Writes to /dev/null or TTYs don't need to be handled
8019 &webmin_debug_log($1 eq ">" ? "WRITE" : "APPEND", $2) if ($db);
8020 return open($fh, $file);
8022 elsif ($file =~ /^>\s*(([a-zA-Z]:)?\/.*)$/ && !$notemp) {
8023 &webmin_debug_log("WRITE", $1) if ($db);
8024 # Over-writing a file, via a temp file
8026 $file = &translate_filename($file);
8028 # Open the link target instead
8029 $file = &resolve_links($file);
8032 # Cannot open a directory!
8033 if ($noerror) { return 0; }
8034 else { &error("Cannot write to directory $file"); }
8036 my $tmp = &open_tempfile($file);
8037 my $ex = open($fh, ">$tmp");
8038 if (!$ex && $! =~ /permission/i) {
8039 # Could not open temp file .. try opening actual file
8041 $ex = open($fh, ">$file");
8042 delete($main::open_tempfiles{$file});
8045 $main::open_temphandles{$fh} = $file;
8048 if (!$ex && !$noerror) {
8049 &error(&text("efileopen", $file, $!));
8053 elsif ($file =~ /^>\s*(([a-zA-Z]:)?\/.*)$/ && $notemp) {
8054 # Just writing direct to a file
8055 &webmin_debug_log("WRITE", $1) if ($db);
8057 $file = &translate_filename($file);
8058 my @old_attributes = &get_clear_file_attributes($file);
8059 my $ex = open($fh, ">$file");
8060 &reset_file_attributes($file, \@old_attributes);
8061 $main::open_temphandles{$fh} = $file;
8062 if (!$ex && !$noerror) {
8063 &error(&text("efileopen", $file, $!));
8068 elsif ($file =~ /^>>\s*(([a-zA-Z]:)?\/.*)$/) {
8069 # Appending to a file .. nothing special to do
8070 &webmin_debug_log("APPEND", $1) if ($db);
8072 $file = &translate_filename($file);
8073 my @old_attributes = &get_clear_file_attributes($file);
8074 my $ex = open($fh, ">>$file");
8075 &reset_file_attributes($file, \@old_attributes);
8076 $main::open_temphandles{$fh} = $file;
8077 if (!$ex && !$noerror) {
8078 &error(&text("efileopen", $file, $!));
8083 elsif ($file =~ /^([a-zA-Z]:)?\//) {
8084 # Read mode .. nothing to do here
8085 &webmin_debug_log("READ", $file) if ($db);
8086 $file = &translate_filename($file);
8087 return open($fh, $file);
8089 elsif ($file eq ">" || $file eq ">>") {
8090 my ($package, $filename, $line) = caller;
8091 if ($noerror) { return 0; }
8092 else { &error("Missing file to open at ${package}::${filename} line $line"); }
8095 my ($package, $filename, $line) = caller;
8096 &error("Unsupported file or mode $file at ${package}::${filename} line $line");
8101 =head2 close_tempfile(file|handle)
8103 Copies a temp file to the actual file, assuming that all writes were
8104 successful. The handle must have been one passed to open_tempfile.
8110 my $fh = &callers_package($_[0]);
8112 if (defined($file = $main::open_temphandles{$fh})) {
8114 close($fh) || &error(&text("efileclose", $file, $!));
8115 delete($main::open_temphandles{$fh});
8116 return &close_tempfile($file);
8118 elsif (defined($main::open_tempfiles{$_[0]})) {
8120 &webmin_debug_log("CLOSE", $_[0]) if ($gconfig{'debug_what_write'});
8121 my @st = stat($_[0]);
8122 if (&is_selinux_enabled() && &has_command("chcon")) {
8123 # Set original security context
8124 system("chcon --reference=".quotemeta($_[0]).
8125 " ".quotemeta($main::open_tempfiles{$_[0]}).
8126 " >/dev/null 2>&1");
8128 my @old_attributes = &get_clear_file_attributes($_[0]);
8129 rename($main::open_tempfiles{$_[0]}, $_[0]) || &error("Failed to replace $_[0] with $main::open_tempfiles{$_[0]} : $!");
8131 # Set original permissions and ownership
8132 chmod($st[2], $_[0]);
8133 chown($st[4], $st[5], $_[0]);
8135 &reset_file_attributes($_[0], \@old_attributes);
8136 delete($main::open_tempfiles{$_[0]});
8137 @main::temporary_files = grep { $_ ne $main::open_tempfiles{$_[0]} } @main::temporary_files;
8138 if ($main::open_templocks{$_[0]}) {
8139 &unlock_file($_[0]);
8140 delete($main::open_templocks{$_[0]});
8145 # Must be closing a handle not associated with a file
8151 =head2 print_tempfile(handle, text, ...)
8153 Like the normal print function, but calls &error on failure. Useful when
8154 combined with open_tempfile, to ensure that a criticial file is never
8155 only partially written.
8160 my ($fh, @args) = @_;
8161 $fh = &callers_package($fh);
8162 (print $fh @args) || &error(&text("efilewrite",
8163 $main::open_temphandles{$fh} || $fh, $!));
8166 =head2 is_selinux_enabled
8168 Returns 1 if SElinux is supported on this system and enabled, 0 if not.
8171 sub is_selinux_enabled
8173 if (!defined($main::selinux_enabled_cache)) {
8175 if ($gconfig{'os_type'} !~ /-linux$/) {
8176 # Not on linux, so no way
8177 $main::selinux_enabled_cache = 0;
8179 elsif (&read_env_file("/etc/selinux/config", \%seconfig)) {
8180 # Use global config file
8181 $main::selinux_enabled_cache =
8182 $seconfig{'SELINUX'} eq 'disabled' ||
8183 !$seconfig{'SELINUX'} ? 0 : 1;
8186 # Use selinuxenabled command
8187 #$selinux_enabled_cache =
8188 # system("selinuxenabled >/dev/null 2>&1") ? 0 : 1;
8189 $main::selinux_enabled_cache = 0;
8192 return $main::selinux_enabled_cache;
8195 =head2 get_clear_file_attributes(file)
8197 Finds file attributes that may prevent writing, clears them and returns them
8198 as a list. May call error. Mainly for internal use by open_tempfile and
8202 sub get_clear_file_attributes
8206 if ($gconfig{'chattr'}) {
8207 # Get original immutable bit
8208 my $out = &backquote_command(
8209 "lsattr ".quotemeta($file)." 2>/dev/null");
8211 $out =~ s/\s\S+\n//;
8212 @old_attributes = grep { $_ ne '-' } split(//, $out);
8214 if (&indexof("i", @old_attributes) >= 0) {
8215 my $err = &backquote_logged(
8216 "chattr -i ".quotemeta($file)." 2>&1");
8218 &error("Failed to remove immutable bit on ".
8223 return @old_attributes;
8226 =head2 reset_file_attributes(file, &attributes)
8228 Put back cleared attributes on some file. May call error. Mainly for internal
8229 use by close_tempfile.
8232 sub reset_file_attributes
8234 my ($file, $old_attributes) = @_;
8235 if (&indexof("i", @$old_attributes) >= 0) {
8236 my $err = &backquote_logged(
8237 "chattr +i ".quotemeta($file)." 2>&1");
8239 &error("Failed to restore immutable bit on ".
8245 =head2 cleanup_tempnames
8247 Remove all temporary files generated using transname. Typically only called
8248 internally when a Webmin script exits.
8251 sub cleanup_tempnames
8253 foreach my $t (@main::temporary_files) {
8256 @main::temporary_files = ( );
8259 =head2 open_lock_tempfile([handle], file, [no-error])
8261 Returns a temporary file for writing to some actual file, and also locks it.
8262 Effectively the same as calling lock_file and open_tempfile on the same file,
8263 but calls the unlock for you automatically when it is closed.
8266 sub open_lock_tempfile
8268 my ($fh, $file, $noerror, $notemp, $safe) = @_;
8269 $fh = &callers_package($fh);
8270 my $lockfile = $file;
8271 $lockfile =~ s/^[^\/]*//;
8272 if ($lockfile =~ /^\//) {
8273 $main::open_templocks{$lockfile} = &lock_file($lockfile);
8275 return &open_tempfile($fh, $file, $noerror, $notemp, $safe);
8280 $main::end_exit_status ||= $?;
8281 if ($$ == $main::initial_process_id) {
8282 # Exiting from initial process
8283 &cleanup_tempnames();
8284 if ($gconfig{'debug_what_start'} && $main::debug_log_start_time &&
8285 $main::debug_log_start_module eq &get_module_name()) {
8286 my $len = time() - $main::debug_log_start_time;
8287 &webmin_debug_log("STOP", "runtime=$len");
8288 $main::debug_log_start_time = 0;
8290 if (!$ENV{'SCRIPT_NAME'} &&
8291 $main::initial_module_name eq &get_module_name()) {
8292 # In a command-line script - call the real exit, so that the
8293 # exit status gets properly propogated. In some cases this
8294 # was not happening.
8295 exit($main::end_exit_status);
8300 =head2 month_to_number(month)
8302 Converts a month name like feb to a number like 1.
8307 return $month_to_number_map{lc(substr($_[0], 0, 3))};
8310 =head2 number_to_month(number)
8312 Converts a number like 1 to a month name like Feb.
8317 return ucfirst($number_to_month_map{$_[0]});
8320 =head2 get_rbac_module_acl(user, module)
8322 Returns a hash reference of RBAC overrides ACLs for some user and module.
8323 May return undef if none exist (indicating access denied), or the string *
8324 if full access is granted.
8327 sub get_rbac_module_acl
8329 my ($user, $mod) = @_;
8330 eval "use Authen::SolarisRBAC";
8331 return undef if ($@);
8334 if (Authen::SolarisRBAC::chkauth("webmin.$mod.admin", $user)) {
8335 # Automagic webmin.modulename.admin authorization exists .. allow access
8337 if (!Authen::SolarisRBAC::chkauth("webmin.$mod.config", $user)) {
8338 %rv = ( 'noconfig' => 1 );
8345 open(RBAC, &module_root_directory($mod)."/rbac-mapping");
8349 my ($auths, $acls) = split(/\s+/, $_);
8350 my @auths = split(/,/, $auths);
8352 my ($merge) = ($acls =~ s/^\+//);
8354 if ($auths eq "*") {
8355 # These ACLs apply to all RBAC users.
8356 # Only if there is some that match a specific authorization
8357 # later will they be used though.
8360 # Check each of the RBAC authorizations
8361 foreach my $a (@auths) {
8362 if (!Authen::SolarisRBAC::chkauth($a, $user)) {
8367 $foundany++ if ($gotall);
8370 # Found an RBAC authorization - return the ACLs
8371 return "*" if ($acls eq "*");
8372 my %acl = map { split(/=/, $_, 2) } split(/,/, $acls);
8374 # Just add to current set
8375 foreach my $a (keys %acl) {
8386 return !$foundany ? undef : %rv ? \%rv : undef;
8389 =head2 supports_rbac([module])
8391 Returns 1 if RBAC client support is available, such as on Solaris.
8396 return 0 if ($gconfig{'os_type'} ne 'solaris');
8397 eval "use Authen::SolarisRBAC";
8400 #return 0 if (!-r &module_root_directory($_[0])."/rbac-mapping");
8405 =head2 supports_ipv6()
8407 Returns 1 if outgoing IPv6 connections can be made
8412 return $ipv6_module_error ? 0 : 1;
8415 =head2 use_rbac_module_acl(user, module)
8417 Returns 1 if some user should use RBAC to get permissions for a module
8420 sub use_rbac_module_acl
8422 my $u = defined($_[0]) ? $_[0] : $base_remote_user;
8423 my $m = defined($_[1]) ? $_[1] : &get_module_name();
8424 return 1 if ($gconfig{'rbacdeny_'.$u}); # RBAC forced for user
8425 my %access = &get_module_acl($u, $m, 1);
8426 return $access{'rbac'} ? 1 : 0;
8429 =head2 execute_command(command, stdin, stdout, stderr, translate-files?, safe?)
8431 Runs some command, possibly feeding it input and capturing output to the
8432 give files or scalar references. The parameters are :
8434 =item command - Full command to run, possibly including shell meta-characters.
8436 =item stdin - File to read input from, or a scalar ref containing input, or undef if no input should be given.
8438 =item stdout - File to write output to, or a scalar ref into which output should be placed, or undef if the output is to be discarded.
8440 =item stderr - File to write error output to, or a scalar ref into which error output should be placed, or undef if the error output is to be discarded.
8442 =item translate-files - Set to 1 to apply filename translation to any filenames. Usually has no effect.
8444 =item safe - Set to 1 if this command is safe and does not modify the state of the system.
8449 my ($cmd, $stdin, $stdout, $stderr, $trans, $safe) = @_;
8450 if (&is_readonly_mode() && !$safe) {
8451 print STDERR "Vetoing command $_[0]\n";
8455 $cmd = &translate_command($cmd);
8457 # Use ` operator where possible
8458 &webmin_debug_log('CMD', "cmd=$cmd") if ($gconfig{'debug_what_cmd'});
8459 if (!$stdin && ref($stdout) && !$stderr) {
8460 $cmd = "($cmd)" if ($gconfig{'os_type'} ne 'windows');
8461 $$stdout = `$cmd 2>$null_file`;
8464 elsif (!$stdin && ref($stdout) && $stdout eq $stderr) {
8465 $cmd = "($cmd)" if ($gconfig{'os_type'} ne 'windows');
8466 $$stdout = `$cmd 2>&1`;
8469 elsif (!$stdin && !$stdout && !$stderr) {
8470 $cmd = "($cmd)" if ($gconfig{'os_type'} ne 'windows');
8471 return system("$cmd >$null_file 2>$null_file <$null_file");
8475 $| = 1; # needed on some systems to flush before forking
8476 pipe(EXECSTDINr, EXECSTDINw);
8477 pipe(EXECSTDOUTr, EXECSTDOUTw);
8478 pipe(EXECSTDERRr, EXECSTDERRw);
8480 if (!($pid = fork())) {
8484 open(STDIN, "<&EXECSTDINr");
8485 open(STDOUT, ">&EXECSTDOUTw");
8486 if (ref($stderr) && $stderr eq $stdout) {
8487 open(STDERR, ">&EXECSTDOUTw");
8490 open(STDERR, ">&EXECSTDERRw");
8497 my $fullcmd = "($cmd)";
8498 if ($stdin && !ref($stdin)) {
8499 $fullcmd .= " <$stdin";
8501 if ($stdout && !ref($stdout)) {
8502 $fullcmd .= " >$stdout";
8504 if ($stderr && !ref($stderr)) {
8505 if ($stderr eq $stdout) {
8506 $fullcmd .= " 2>&1";
8509 $fullcmd .= " 2>$stderr";
8512 if ($gconfig{'os_type'} eq 'windows') {
8516 exec("/bin/sh", "-c", $fullcmd);
8518 print "Exec failed : $!\n";
8525 # Feed input and capture output
8527 if ($stdin && ref($stdin)) {
8528 print EXECSTDINw $$stdin;
8531 if ($stdout && ref($stdout)) {
8533 while(<EXECSTDOUTr>) {
8538 if ($stderr && ref($stderr) && $stderr ne $stdout) {
8540 while(<EXECSTDERRr>) {
8551 =head2 open_readfile(handle, file)
8553 Opens some file for reading. Returns 1 on success, 0 on failure. Pretty much
8554 exactly the same as Perl's open function.
8559 my ($fh, $file) = @_;
8560 $fh = &callers_package($fh);
8561 my $realfile = &translate_filename($file);
8562 &webmin_debug_log('READ', $file) if ($gconfig{'debug_what_read'});
8563 return open($fh, "<".$realfile);
8566 =head2 open_execute_command(handle, command, output?, safe?)
8568 Runs some command, with the specified file handle set to either write to it if
8569 in-or-out is set to 0, or read to it if output is set to 1. The safe flag
8570 indicates if the command modifies the state of the system or not.
8573 sub open_execute_command
8575 my ($fh, $cmd, $mode, $safe) = @_;
8576 $fh = &callers_package($fh);
8577 my $realcmd = &translate_command($cmd);
8578 if (&is_readonly_mode() && !$safe) {
8579 # Don't actually run it
8580 print STDERR "vetoing command $cmd\n";
8583 return open($fh, ">$null_file");
8586 return open($fh, $null_file);
8590 &webmin_debug_log('CMD', "cmd=$realcmd mode=$mode")
8591 if ($gconfig{'debug_what_cmd'});
8593 return open($fh, "| $cmd");
8595 elsif ($mode == 1) {
8596 return open($fh, "$cmd 2>$null_file |");
8598 elsif ($mode == 2) {
8599 return open($fh, "$cmd 2>&1 |");
8603 =head2 translate_filename(filename)
8605 Applies all relevant registered translation functions to a filename. Mostly
8606 for internal use, and typically does nothing.
8609 sub translate_filename
8611 my ($realfile) = @_;
8612 my @funcs = grep { $_->[0] eq &get_module_name() ||
8613 !defined($_->[0]) } @main::filename_callbacks;
8614 foreach my $f (@funcs) {
8616 $realfile = &$func($realfile, @{$f->[2]});
8621 =head2 translate_command(filename)
8623 Applies all relevant registered translation functions to a command. Mostly
8624 for internal use, and typically does nothing.
8627 sub translate_command
8630 my @funcs = grep { $_->[0] eq &get_module_name() ||
8631 !defined($_->[0]) } @main::command_callbacks;
8632 foreach my $f (@funcs) {
8634 $realcmd = &$func($realcmd, @{$f->[2]});
8639 =head2 register_filename_callback(module|undef, &function, &args)
8641 Registers some function to be called when the specified module (or all
8642 modules) tries to open a file for reading and writing. The function must
8643 return the actual file to open. This allows you to override which files
8644 other code actually operates on, via the translate_filename function.
8647 sub register_filename_callback
8649 my ($mod, $func, $args) = @_;
8650 push(@main::filename_callbacks, [ $mod, $func, $args ]);
8653 =head2 register_command_callback(module|undef, &function, &args)
8655 Registers some function to be called when the specified module (or all
8656 modules) tries to execute a command. The function must return the actual
8657 command to run. This allows you to override which commands other other code
8658 actually runs, via the translate_command function.
8661 sub register_command_callback
8663 my ($mod, $func, $args) = @_;
8664 push(@main::command_callbacks, [ $mod, $func, $args ]);
8667 =head2 capture_function_output(&function, arg, ...)
8669 Captures output that some function prints to STDOUT, and returns it. Useful
8670 for functions outside your control that print data when you really want to
8671 manipulate it before output.
8674 sub capture_function_output
8676 my ($func, @args) = @_;
8677 socketpair(SOCKET2, SOCKET1, AF_UNIX, SOCK_STREAM, PF_UNSPEC);
8678 my $old = select(SOCKET1);
8679 my @rv = &$func(@args);
8688 return wantarray ? ($out, \@rv) : $out;
8691 =head2 capture_function_output_tempfile(&function, arg, ...)
8693 Behaves the same as capture_function_output, but uses a temporary file
8694 to avoid buffer full problems.
8697 sub capture_function_output_tempfile
8699 my ($func, @args) = @_;
8700 my $temp = &transname();
8701 open(BUFFER, ">$temp");
8702 my $old = select(BUFFER);
8703 my @rv = &$func(@args);
8706 my $out = &read_file_contents($temp);
8707 &unlink_file($temp);
8708 return wantarray ? ($out, \@rv) : $out;
8711 =head2 modules_chooser_button(field, multiple, [form])
8713 Returns HTML for a button for selecting one or many Webmin modules.
8714 field - Name of the HTML field to place the module names into.
8715 multiple - Set to 1 if multiple modules can be selected.
8716 form - Index of the form on the page.
8719 sub modules_chooser_button
8721 return &theme_modules_chooser_button(@_)
8722 if (defined(&theme_modules_chooser_button));
8723 my $form = defined($_[2]) ? $_[2] : 0;
8724 my $w = $_[1] ? 700 : 500;
8726 if ($_[1] && $gconfig{'db_sizemodules'}) {
8727 ($w, $h) = split(/x/, $gconfig{'db_sizemodules'});
8729 elsif (!$_[1] && $gconfig{'db_sizemodule'}) {
8730 ($w, $h) = split(/x/, $gconfig{'db_sizemodule'});
8732 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";
8735 =head2 substitute_template(text, &hash)
8737 Given some text and a hash reference, for each ocurrance of $FOO or ${FOO} in
8738 the text replaces it with the value of the hash key foo. Also supports blocks
8739 like ${IF-FOO} ... ${ENDIF-FOO}, whose contents are only included if foo is
8740 non-zero, and ${IF-FOO} ... ${ELSE-FOO} ... ${ENDIF-FOO}.
8743 sub substitute_template
8745 # Add some extra fixed parameters to the hash
8746 my %hash = %{$_[1]};
8747 $hash{'hostname'} = &get_system_hostname();
8748 $hash{'webmin_config'} = $config_directory;
8749 $hash{'webmin_etc'} = $config_directory;
8750 $hash{'module_config'} = &get_module_variable('$module_config_directory');
8751 $hash{'webmin_var'} = $var_directory;
8753 # Add time-based parameters, for use in DNS
8754 $hash{'current_time'} = time();
8755 my @tm = localtime($hash{'current_time'});
8756 $hash{'current_year'} = $tm[5]+1900;
8757 $hash{'current_month'} = sprintf("%2.2d", $tm[4]+1);
8758 $hash{'current_day'} = sprintf("%2.2d", $tm[3]);
8759 $hash{'current_hour'} = sprintf("%2.2d", $tm[2]);
8760 $hash{'current_minute'} = sprintf("%2.2d", $tm[1]);
8761 $hash{'current_second'} = sprintf("%2.2d", $tm[0]);
8763 # Actually do the substition
8765 foreach my $s (keys %hash) {
8766 next if ($s eq ''); # Prevent just $ from being subbed
8769 $rv =~ s/\$\{\Q$us\E\}/$sv/g;
8770 $rv =~ s/\$\Q$us\E/$sv/g;
8772 # Replace ${IF}..${ELSE}..${ENDIF} block with first value,
8773 # and ${IF}..${ENDIF} with value
8774 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ELSE-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)/$2/g;
8775 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)/$2/g;
8777 # Replace $IF..$ELSE..$ENDIF block with first value,
8778 # and $IF..$ENDIF with value
8779 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ELSE-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)/$2/g;
8780 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)/$2/g;
8782 # Replace ${IFEQ}..${ENDIFEQ} block with first value if
8783 # matching, nothing if not
8784 $rv =~ s/\$\{IFEQ-\Q$us\E-\Q$sv\E\}(\n?)([\000-\377]*?)\$\{ENDIFEQ-\Q$us\E-\Q$sv\E\}(\n?)/$2/g;
8785 $rv =~ s/\$\{IFEQ-\Q$us\E-[^\}]+}(\n?)([\000-\377]*?)\$\{ENDIFEQ-\Q$us\E-[^\}]+\}(\n?)//g;
8787 # Replace $IFEQ..$ENDIFEQ block with first value if
8788 # matching, nothing if not
8789 $rv =~ s/\$IFEQ-\Q$us\E-\Q$sv\E(\n?)([\000-\377]*?)\$ENDIFEQ-\Q$us\E-\Q$sv\E(\n?)/$2/g;
8790 $rv =~ s/\$IFEQ-\Q$us\E-\S+(\n?)([\000-\377]*?)\$ENDIFEQ-\Q$us\E-\S+(\n?)//g;
8793 # Replace ${IF}..${ELSE}..${ENDIF} block with second value,
8794 # and ${IF}..${ENDIF} with nothing
8795 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ELSE-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)/$4/g;
8796 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)//g;
8798 # Replace $IF..$ELSE..$ENDIF block with second value,
8799 # and $IF..$ENDIF with nothing
8800 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ELSE-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)/$4/g;
8801 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)//g;
8803 # Replace ${IFEQ}..${ENDIFEQ} block with nothing
8804 $rv =~ s/\$\{IFEQ-\Q$us\E-[^\}]+}(\n?)([\000-\377]*?)\$\{ENDIFEQ-\Q$us\E-[^\}]+\}(\n?)//g;
8805 $rv =~ s/\$IFEQ-\Q$us\E-\S+(\n?)([\000-\377]*?)\$ENDIFEQ-\Q$us\E-\S+(\n?)//g;
8809 # Now assume any $IF blocks whose variables are not present in the hash
8810 # evaluate to false.
8811 # $IF...$ELSE x $ENDIF => x
8812 $rv =~ s/\$\{IF\-([A-Z]+)\}.*?\$\{ELSE\-\1\}(.*?)\$\{ENDIF\-\1\}/$2/gs;
8813 # $IF...x...$ENDIF => (nothing)
8814 $rv =~ s/\$\{IF\-([A-Z]+)\}.*?\$\{ENDIF\-\1\}//gs;
8815 # ${var} => (nothing)
8816 $rv =~ s/\$\{[A-Z]+\}//g;
8821 =head2 running_in_zone
8823 Returns 1 if the current Webmin instance is running in a Solaris zone. Used to
8824 disable module and features that are not appropriate, like those that modify
8825 mounted filesystems.
8830 return 0 if ($gconfig{'os_type'} ne 'solaris' ||
8831 $gconfig{'os_version'} < 10);
8832 my $zn = `zonename 2>$null_file`;
8834 return $zn && $zn ne "global";
8837 =head2 running_in_vserver
8839 Returns 1 if the current Webmin instance is running in a Linux VServer.
8840 Used to disable modules and features that are not appropriate.
8843 sub running_in_vserver
8845 return 0 if ($gconfig{'os_type'} !~ /^\*-linux$/);
8848 open(MTAB, "/etc/mtab");
8850 my ($dev, $mp) = split(/\s+/, $_);
8851 if ($mp eq "/" && $dev =~ /^\/dev\/hdv/) {
8860 =head2 running_in_xen
8862 Returns 1 if Webmin is running inside a Xen instance, by looking
8863 at /proc/xen/capabilities.
8868 return 0 if (!-r "/proc/xen/capabilities");
8869 my $cap = &read_file_contents("/proc/xen/capabilities");
8870 return $cap =~ /control_d/ ? 0 : 1;
8873 =head2 running_in_openvz
8875 Returns 1 if Webmin is running inside an OpenVZ container, by looking
8876 at /proc/vz/veinfo for a non-zero line.
8879 sub running_in_openvz
8881 return 0 if (!-r "/proc/vz/veinfo");
8882 my $lref = &read_file_lines("/proc/vz/veinfo", 1);
8883 return 0 if (!$lref || !@$lref);
8884 foreach my $l (@$lref) {
8886 my @ll = split(/\s+/, $l);
8887 return 0 if ($ll[0] eq '0');
8892 =head2 list_categories(&modules, [include-empty])
8894 Returns a hash mapping category codes to names, including any custom-defined
8895 categories. The modules parameter must be an array ref of module hash objects,
8896 as returned by get_all_module_infos.
8901 my ($mods, $empty) = @_;
8902 my (%cats, %catnames);
8903 &read_file("$config_directory/webmin.catnames", \%catnames);
8904 foreach my $o (@lang_order_list) {
8905 &read_file("$config_directory/webmin.catnames.$o", \%catnames);
8910 foreach my $m (@$mods) {
8911 my $c = $m->{'category'};
8912 next if ($cats{$c});
8913 if (defined($catnames{$c})) {
8914 $cats{$c} = $catnames{$c};
8916 elsif ($text{"category_$c"}) {
8917 $cats{$c} = $text{"category_$c"};
8920 # try to get category name from module ..
8921 my %mtext = &load_language($m->{'dir'});
8922 if ($mtext{"category_$c"}) {
8923 $cats{$c} = $mtext{"category_$c"};
8926 $c = $m->{'category'} = "";
8927 $cats{$c} = $text{"category_$c"};
8934 =head2 is_readonly_mode
8936 Returns 1 if the current user is in read-only mode, and thus all writes
8937 to files and command execution should fail.
8940 sub is_readonly_mode
8942 if (!defined($main::readonly_mode_cache)) {
8943 my %gaccess = &get_module_acl(undef, "");
8944 $main::readonly_mode_cache = $gaccess{'readonly'} ? 1 : 0;
8946 return $main::readonly_mode_cache;
8949 =head2 command_as_user(user, with-env?, command, ...)
8951 Returns a command to execute some command as the given user, using the
8952 su statement. If on Linux, the /bin/sh shell is forced in case the user
8953 does not have a valid shell. If with-env is set to 1, the -s flag is added
8954 to the su command to read the user's .profile or .bashrc file.
8959 my ($user, $env, @args) = @_;
8960 my @uinfo = getpwnam($user);
8961 if ($uinfo[8] ne "/bin/sh" && $uinfo[8] !~ /\/bash$/) {
8962 # User shell doesn't appear to be valid
8963 if ($gconfig{'os_type'} =~ /-linux$/) {
8964 # Use -s /bin/sh to force it
8965 $shellarg = " -s /bin/sh";
8967 elsif ($gconfig{'os_type'} eq 'freebsd' ||
8968 $gconfig{'os_type'} eq 'solaris' &&
8969 $gconfig{'os_version'} >= 11 ||
8970 $gconfig{'os_type'} eq 'macos') {
8971 # Use -m and force /bin/sh
8972 @args = ( "/bin/sh", "-c", quotemeta(join(" ", @args)) );
8976 my $rv = "su".($env ? " -" : "").$shellarg.
8977 " ".quotemeta($user)." -c ".quotemeta(join(" ", @args));
8981 =head2 list_osdn_mirrors(project, file)
8983 This function is now deprecated in favor of letting sourceforge just
8984 redirect to the best mirror, and now just returns their primary download URL.
8987 sub list_osdn_mirrors
8989 my ($project, $file) = @_;
8990 return ( { 'url' => "http://downloads.sourceforge.net/$project/$file",
8992 'mirror' => 'downloads' } );
8995 =head2 convert_osdn_url(url)
8997 Given a URL like http://osdn.dl.sourceforge.net/sourceforge/project/file.zip
8998 or http://prdownloads.sourceforge.net/project/file.zip , convert it
8999 to a real URL on the sourceforge download redirector.
9002 sub convert_osdn_url
9005 if ($url =~ /^http:\/\/[^\.]+.dl.sourceforge.net\/sourceforge\/([^\/]+)\/(.*)$/ ||
9006 $url =~ /^http:\/\/prdownloads.sourceforge.net\/([^\/]+)\/(.*)$/) {
9007 # Always use the Sourceforge mail download URL, which does
9008 # a location-based redirect for us
9009 my ($project, $file) = ($1, $2);
9010 $url = "http://prdownloads.sourceforge.net/sourceforge/".
9012 return wantarray ? ( $url, 0 ) : $url;
9015 # Some other source .. don't change
9016 return wantarray ? ( $url, 2 ) : $url;
9020 =head2 get_current_dir
9022 Returns the directory the current process is running in.
9028 if ($gconfig{'os_type'} eq 'windows') {
9041 =head2 supports_users
9043 Returns 1 if the current OS supports Unix user concepts and functions like
9044 su , getpw* and so on. This will be true on Linux and other Unixes, but false
9050 return $gconfig{'os_type'} ne 'windows';
9053 =head2 supports_symlinks
9055 Returns 1 if the current OS supports symbolic and hard links. This will not
9056 be the case on Windows.
9059 sub supports_symlinks
9061 return $gconfig{'os_type'} ne 'windows';
9064 =head2 quote_path(path)
9066 Returns a path with safe quoting for the current operating system.
9072 if ($gconfig{'os_type'} eq 'windows' || $path =~ /^[a-z]:/i) {
9073 # Windows only supports "" style quoting
9077 return quotemeta($path);
9081 =head2 get_windows_root
9083 Returns the base windows system directory, like c:/windows.
9086 sub get_windows_root
9088 if ($ENV{'SystemRoot'}) {
9089 my $rv = $ENV{'SystemRoot'};
9094 return -d "c:/windows" ? "c:/windows" : "c:/winnt";
9098 =head2 read_file_contents(file)
9100 Given a filename, returns its complete contents as a string. Effectively
9101 the same as the Perl construct `cat file`.
9104 sub read_file_contents
9106 &open_readfile(FILE, $_[0]) || return undef;
9113 =head2 unix_crypt(password, salt)
9115 Performs Unix encryption on a password, using the built-in crypt function or
9116 the Crypt::UnixCrypt module if the former does not work. The salt parameter
9117 must be either an already-hashed password, or a two-character alpha-numeric
9123 my ($pass, $salt) = @_;
9124 return "" if ($salt !~ /^[a-zA-Z0-9\.\/]{2}/); # same as real crypt
9125 my $rv = eval "crypt(\$pass, \$salt)";
9127 return $rv if ($rv && !$@);
9128 eval "use Crypt::UnixCrypt";
9130 return Crypt::UnixCrypt::crypt($pass, $salt);
9133 &error("Failed to encrypt password : $err");
9137 =head2 split_quoted_string(string)
9139 Given a string like I<foo "bar baz" quux>, returns the array :
9143 sub split_quoted_string
9147 while($str =~ /^"([^"]*)"\s*([\000-\377]*)$/ ||
9148 $str =~ /^'([^']*)'\s*([\000-\377]*)$/ ||
9149 $str =~ /^(\S+)\s*([\000-\377]*)$/) {
9156 =head2 write_to_http_cache(url, file|&data)
9158 Updates the Webmin cache with the contents of the given file, possibly also
9159 clearing out old data. Mainly for internal use by http_download.
9162 sub write_to_http_cache
9164 my ($url, $file) = @_;
9165 return 0 if (!$gconfig{'cache_size'});
9167 # Don't cache downloads that look dynamic
9168 if ($url =~ /cgi-bin/ || $url =~ /\?/) {
9172 # Check if the current module should do caching
9173 if ($gconfig{'cache_mods'} =~ /^\!(.*)$/) {
9174 # Caching all except some modules
9175 my @mods = split(/\s+/, $1);
9176 return 0 if (&indexof(&get_module_name(), @mods) != -1);
9178 elsif ($gconfig{'cache_mods'}) {
9179 # Only caching some modules
9180 my @mods = split(/\s+/, $gconfig{'cache_mods'});
9181 return 0 if (&indexof(&get_module_name(), @mods) == -1);
9187 $size = length($$file);
9190 my @st = stat($file);
9194 if ($size > $gconfig{'cache_size'}) {
9195 # Bigger than the whole cache - so don't save it
9200 $cfile = "$main::http_cache_directory/$cfile";
9202 # See how much we have cached currently, clearing old files
9204 mkdir($main::http_cache_directory, 0700) if (!-d $main::http_cache_directory);
9205 opendir(CACHEDIR, $main::http_cache_directory);
9206 foreach my $f (readdir(CACHEDIR)) {
9207 next if ($f eq "." || $f eq "..");
9208 my $path = "$main::http_cache_directory/$f";
9209 my @st = stat($path);
9210 if ($gconfig{'cache_days'} &&
9211 time()-$st[9] > $gconfig{'cache_days'}*24*60*60) {
9212 # This file is too old .. trash it
9217 push(@cached, [ $path, $st[7], $st[9] ]);
9221 @cached = sort { $a->[2] <=> $b->[2] } @cached;
9222 while($total+$size > $gconfig{'cache_size'} && @cached) {
9223 # Cache is too big .. delete some files until the new one will fit
9224 unlink($cached[0]->[0]);
9225 $total -= $cached[0]->[1];
9229 # Finally, write out the new file
9231 &open_tempfile(CACHEFILE, ">$cfile");
9232 &print_tempfile(CACHEFILE, $$file);
9233 &close_tempfile(CACHEFILE);
9236 my ($ok, $err) = ©_source_dest($file, $cfile);
9242 =head2 check_in_http_cache(url)
9244 If some URL is in the cache and valid, return the filename for it. Mainly
9245 for internal use by http_download.
9248 sub check_in_http_cache
9251 return undef if (!$gconfig{'cache_size'});
9253 # Check if the current module should do caching
9254 if ($gconfig{'cache_mods'} =~ /^\!(.*)$/) {
9255 # Caching all except some modules
9256 my @mods = split(/\s+/, $1);
9257 return 0 if (&indexof(&get_module_name(), @mods) != -1);
9259 elsif ($gconfig{'cache_mods'}) {
9260 # Only caching some modules
9261 my @mods = split(/\s+/, $gconfig{'cache_mods'});
9262 return 0 if (&indexof(&get_module_name(), @mods) == -1);
9267 $cfile = "$main::http_cache_directory/$cfile";
9268 my @st = stat($cfile);
9269 return undef if (!@st || !$st[7]);
9270 if ($gconfig{'cache_days'} && time()-$st[9] > $gconfig{'cache_days'}*24*60*60) {
9275 open(TOUCH, ">>$cfile"); # Update the file time, to keep it in the cache
9280 =head2 supports_javascript
9282 Returns 1 if the current browser is assumed to support javascript.
9285 sub supports_javascript
9287 if (defined(&theme_supports_javascript)) {
9288 return &theme_supports_javascript();
9290 return $ENV{'MOBILE_DEVICE'} ? 0 : 1;
9293 =head2 get_module_name
9295 Returns the name of the Webmin module that called this function. For internal
9296 use only by other API functions.
9301 return &get_module_variable('$module_name');
9304 =head2 get_module_variable(name, [ref])
9306 Returns the value of some variable which is set in the caller's context, if
9307 using the new WebminCore package. For internal use only.
9310 sub get_module_variable
9312 my ($v, $wantref) = @_;
9313 my $slash = $wantref ? "\\" : "";
9314 my $thispkg = &web_libs_package();
9315 if ($thispkg eq 'WebminCore') {
9316 my ($vt, $vn) = split('', $v, 2);
9318 for(my $i=0; ($callpkg) = caller($i); $i++) {
9319 last if ($callpkg ne $thispkg);
9321 return eval "${slash}${vt}${callpkg}::${vn}";
9323 return eval "${slash}${v}";
9326 =head2 clear_time_locale()
9328 Temporarily force the locale to C, until reset_time_locale is called. This is
9329 useful if your code is going to call C<strftime> from the POSIX package, and
9330 you want to ensure that the output is in a consistent format.
9333 sub clear_time_locale
9335 if ($main::clear_time_locale_count == 0) {
9338 $main::clear_time_locale_old = POSIX::setlocale(POSIX::LC_TIME);
9339 POSIX::setlocale(POSIX::LC_TIME, "C");
9342 $main::clear_time_locale_count++;
9345 =head2 reset_time_locale()
9347 Revert the locale to whatever it was before clear_time_locale was called
9350 sub reset_time_locale
9352 if ($main::clear_time_locale_count == 1) {
9354 POSIX::setlocale(POSIX::LC_TIME, $main::clear_time_locale_old);
9355 $main::clear_time_locale_old = undef;
9358 $main::clear_time_locale_count--;
9361 =head2 callers_package(filehandle)
9363 Convert a non-module filehandle like FOO to one qualified with the
9364 caller's caller's package, like fsdump::FOO. For internal use only.
9370 my $callpkg = (caller(1))[0];
9371 my $thispkg = &web_libs_package();
9372 if (!ref($fh) && $fh !~ /::/ &&
9373 $callpkg ne $thispkg && $thispkg eq 'WebminCore') {
9374 $fh = $callpkg."::".$fh;
9379 =head2 web_libs_package()
9381 Returns the package this code is in. We can't always trust __PACKAGE__. For
9385 sub web_libs_package
9387 if ($called_from_webmin_core) {
9388 return "WebminCore";
9393 =head2 get_userdb_string
9395 Returns the URL-style string for connecting to the users and groups database
9398 sub get_userdb_string
9400 return undef if ($main::no_miniserv_userdb);
9402 &get_miniserv_config(\%miniserv);
9403 return $miniserv{'userdb'};
9406 =head2 connect_userdb(string)
9408 Returns a handle for talking to a user database - may be a DBI or LDAP handle.
9409 On failure returns an error message string. In an array context, returns the
9416 my ($proto, $user, $pass, $host, $prefix, $args) = &split_userdb_string($str);
9417 if ($proto eq "mysql") {
9418 # Connect to MySQL with DBI
9419 my $drh = eval "use DBI; DBI->install_driver('mysql');";
9420 $drh || return $text{'sql_emysqldriver'};
9421 my ($host, $port) = split(/:/, $host);
9422 my $cstr = "database=$prefix;host=$host";
9423 $cstr .= ";port=$port" if ($port);
9424 my $dbh = $drh->connect($cstr, $user, $pass, { });
9425 $dbh || return &text('sql_emysqlconnect', $drh->errstr);
9426 return wantarray ? ($dbh, $proto, $prefix, $args) : $dbh;
9428 elsif ($proto eq "postgresql") {
9429 # Connect to PostgreSQL with DBI
9430 my $drh = eval "use DBI; DBI->install_driver('Pg');";
9431 $drh || return $text{'sql_epostgresqldriver'};
9432 my ($host, $port) = split(/:/, $host);
9433 my $cstr = "dbname=$prefix;host=$host";
9434 $cstr .= ";port=$port" if ($port);
9435 my $dbh = $drh->connect($cstr, $user, $pass);
9436 $dbh || return &text('sql_epostgresqlconnect', $drh->errstr);
9437 return wantarray ? ($dbh, $proto, $prefix, $args) : $dbh;
9439 elsif ($proto eq "ldap") {
9440 # Connect with perl LDAP module
9441 eval "use Net::LDAP";
9442 $@ && return $text{'sql_eldapdriver'};
9443 my ($host, $port) = split(/:/, $host);
9444 my $scheme = $args->{'scheme'} || 'ldap';
9446 $port = $scheme eq 'ldaps' ? 636 : 389;
9448 my $ldap = Net::LDAP->new($host,
9450 'scheme' => $scheme);
9451 $ldap || return &text('sql_eldapconnect', $host);
9453 if ($args->{'tls'}) {
9454 # Switch to TLS mode
9455 eval { $mesg = $ldap->start_tls(); };
9456 if ($@ || !$mesg || $mesg->code) {
9457 return &text('sql_eldaptls',
9458 $@ ? $@ : $mesg ? $mesg->error : "Unknown error");
9461 # Login to the server
9463 $mesg = $ldap->bind(dn => $user, password => $pass);
9466 $mesg = $ldap->bind(dn => $user, anonymous => 1);
9468 if (!$mesg || $mesg->code) {
9469 return &text('sql_eldaplogin', $user,
9470 $mesg ? $mesg->error : "Unknown error");
9472 return wantarray ? ($ldap, $proto, $prefix, $args) : $ldap;
9475 return "Unknown protocol $proto";
9479 =head2 disconnect_userdb(string, &handle)
9481 Closes a handle opened by connect_userdb
9484 sub disconnect_userdb
9487 if ($str =~ /^(mysql|postgresql):/) {
9489 if (!$h->{'AutoCommit'}) {
9494 elsif ($str =~ /^ldap:/) {
9501 =head2 split_userdb_string(string)
9503 Converts a string like mysql://user:pass@host/db into separate parts
9506 sub split_userdb_string
9509 if ($str =~ /^([a-z]+):\/\/([^:]*):([^\@]*)\@([a-z0-9\.\-\_]+)\/([^\?]+)(\?(.*))?$/) {
9510 my ($proto, $user, $pass, $host, $prefix, $argstr) =
9511 ($1, $2, $3, $4, $5, $7);
9512 my %args = map { split(/=/, $_, 2) } split(/\&/, $argstr);
9513 return ($proto, $user, $pass, $host, $prefix, \%args);
9518 $done_web_lib_funcs = 1;