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 write_file(file, &hash, [join-char])
111 Write out the contents of a hash as name=value lines. The parameters are :
113 =item file - Full path to write to
115 =item hash - A hash reference containing names and values to output
117 =item join-char - If given, names and values are separated by this instead of =
123 my $join = defined($_[2]) ? $_[2] : "=";
124 my $realfile = &translate_filename($_[0]);
125 &read_file($_[0], \%old, \@order);
126 &open_tempfile(ARFILE, ">$_[0]");
127 foreach $k (@order) {
128 if (exists($_[1]->{$k})) {
129 (print ARFILE $k,$join,$_[1]->{$k},"\n") ||
130 &error(&text("efilewrite", $realfile, $!));
133 foreach $k (keys %{$_[1]}) {
134 if (!exists($old{$k})) {
135 (print ARFILE $k,$join,$_[1]->{$k},"\n") ||
136 &error(&text("efilewrite", $realfile, $!));
139 &close_tempfile(ARFILE);
140 if (defined($main::read_file_cache{$realfile})) {
141 %{$main::read_file_cache{$realfile}} = %{$_[1]};
143 if (defined($main::read_file_missing{$realfile})) {
144 $main::read_file_missing{$realfile} = 0;
148 =head2 html_escape(string)
150 Converts &, < and > codes in text to HTML entities, and returns the new string.
151 This should be used when including data read from other sources in HTML pages.
160 $tmp =~ s/\"/"/g;
161 $tmp =~ s/\'/'/g;
166 =head2 quote_escape(string, [only-quote])
168 Converts ' and " characters in a string into HTML entities, and returns it.
169 Useful for outputing HTML tag values.
174 my ($tmp, $only) = @_;
175 if ($tmp !~ /\&[a-zA-Z]+;/ && $tmp !~ /\&#/) {
176 # convert &, unless it is part of &#nnn; or &foo;
177 $tmp =~ s/&([^#])/&$1/g;
179 $tmp =~ s/&$/&/g;
180 $tmp =~ s/\"/"/g if ($only eq '' || $only eq '"');
181 $tmp =~ s/\'/'/g if ($only eq '' || $only eq "'");
185 =head2 tempname([filename])
187 Returns a mostly random temporary file name, typically under the /tmp/.webmin
188 directory. If filename is given, this will be the base name used. Otherwise
189 a unique name is selected randomly.
194 my $tmp_base = $gconfig{'tempdir_'.&get_module_name()} ?
195 $gconfig{'tempdir_'.&get_module_name()} :
196 $gconfig{'tempdir'} ? $gconfig{'tempdir'} :
197 $ENV{'TEMP'} ? $ENV{'TEMP'} :
198 $ENV{'TMP'} ? $ENV{'TMP'} :
199 -d "c:/temp" ? "c:/temp" : "/tmp/.webmin";
200 my $tmp_dir = -d $remote_user_info[7] && !$gconfig{'nohometemp'} ?
201 "$remote_user_info[7]/.tmp" :
202 @remote_user_info ? $tmp_base."-".$remote_user :
203 $< != 0 ? $tmp_base."-".getpwuid($<) :
205 if ($gconfig{'os_type'} eq 'windows' || $tmp_dir =~ /^[a-z]:/i) {
206 # On Windows system, just create temp dir if missing
208 mkdir($tmp_dir, 0755) ||
209 &error("Failed to create temp directory $tmp_dir : $!");
213 # On Unix systems, need to make sure temp dir is valid
215 while($tries++ < 10) {
216 my @st = lstat($tmp_dir);
217 last if ($st[4] == $< && (-d _) && ($st[2] & 0777) == 0755);
219 unlink($tmp_dir) || rmdir($tmp_dir) ||
220 system("/bin/rm -rf ".quotemeta($tmp_dir));
222 mkdir($tmp_dir, 0755) || next;
223 chown($<, $(, $tmp_dir);
224 chmod(0755, $tmp_dir);
227 my @st = lstat($tmp_dir);
228 &error("Failed to create temp directory $tmp_dir : uid=$st[4] mode=$st[2]");
232 if (defined($_[0]) && $_[0] !~ /\.\./) {
233 $rv = "$tmp_dir/$_[0]";
236 $main::tempfilecount++;
238 $rv = $tmp_dir."/".int(rand(1000000))."_".
239 $main::tempfilecount."_".$scriptname;
244 =head2 transname([filename])
246 Behaves exactly like tempname, but records the temp file for deletion when the
247 current Webmin script process exits.
252 my $rv = &tempname(@_);
253 push(@main::temporary_files, $rv);
257 =head2 trunc(string, maxlen)
259 Truncates a string to the shortest whole word less than or equal to the
260 given width. Useful for word wrapping.
265 if (length($_[0]) <= $_[1]) {
268 my $str = substr($_[0],0,$_[1]);
277 =head2 indexof(string, value, ...)
279 Returns the index of some value in an array of values, or -1 if it was not
285 for(my $i=1; $i <= $#_; $i++) {
286 if ($_[$i] eq $_[0]) { return $i - 1; }
291 =head2 indexoflc(string, value, ...)
293 Like indexof, but does a case-insensitive match
298 my $str = lc(shift(@_));
299 my @arr = map { lc($_) } @_;
300 return &indexof($str, @arr);
303 =head2 sysprint(handle, [string]+)
305 Outputs some strings to a file handle, but bypassing IO buffering. Can be used
306 as a replacement for print when writing to pipes or sockets.
311 my $fh = &callers_package($_[0]);
312 my $str = join('', @_[1..$#_]);
313 syswrite $fh, $str, length($str);
316 =head2 check_ipaddress(ip)
318 Check if some IPv4 address is properly formatted, returning 1 if so or 0 if not.
323 return $_[0] =~ /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/ &&
324 $1 >= 0 && $1 <= 255 &&
325 $2 >= 0 && $2 <= 255 &&
326 $3 >= 0 && $3 <= 255 &&
327 $4 >= 0 && $4 <= 255;
330 =head2 check_ip6address(ip)
332 Check if some IPv6 address is properly formatted, and returns 1 if so.
337 my @blocks = split(/:/, $_[0]);
338 return 0 if (@blocks == 0 || @blocks > 8);
340 # The address/netmask format is accepted. So we're looking for a "/" to isolate a possible netmask.
341 # After that, we delete the netmask to control the address only format, but we verify whether the netmask
342 # value is in [0;128].
344 my $where = index($blocks[$ib],"/");
347 my $b = substr($blocks[$ib],0,$where);
348 $m = substr($blocks[$ib],$where+1,length($blocks[$ib])-($where+1));
352 # The netmask must take its value in [0;128]
353 return 0 if ($m <0 || $m >128);
355 # Check the different blocks of the address : 16 bits block in hexa notation.
356 # Possibility of 1 empty block or 2 if the address begins with "::".
359 foreach $b (@blocks) {
360 return 0 if ($b ne "" && $b !~ /^[0-9a-f]{1,4}$/i);
361 $empty++ if ($b eq "");
363 return 0 if ($empty > 1 && !($_[0] =~ /^::/ && $empty == 2));
369 =head2 generate_icon(image, title, link, [href], [width], [height], [before-title], [after-title])
371 Prints HTML for an icon image. The parameters are :
373 =item image - URL for the image, like images/foo.gif
375 =item title - Text to appear under the icon
377 =item link - Optional destination for the icon's link
379 =item href - Other HTML attributes to be added to the <a href> for the link
381 =item width - Optional width of the icon
383 =item height - Optional height of the icon
385 =item before-title - HTML to appear before the title link, but which is not actually in the link
387 =item after-title - HTML to appear after the title link, but which is not actually in the link
392 &load_theme_library();
393 if (defined(&theme_generate_icon)) {
394 &theme_generate_icon(@_);
397 my $w = !defined($_[4]) ? "width=48" : $_[4] ? "width=$_[4]" : "";
398 my $h = !defined($_[5]) ? "height=48" : $_[5] ? "height=$_[5]" : "";
399 if ($tconfig{'noicons'}) {
401 print "$_[6]<a href=\"$_[2]\" $_[3]>$_[1]</a>$_[7]\n";
404 print "$_[6]$_[1]$_[7]\n";
408 print "<table border><tr><td width=48 height=48>\n",
409 "<a href=\"$_[2]\" $_[3]><img src=\"$_[0]\" alt=\"\" border=0 ",
410 "$w $h></a></td></tr></table>\n";
411 print "$_[6]<a href=\"$_[2]\" $_[3]>$_[1]</a>$_[7]\n";
414 print "<table border><tr><td width=48 height=48>\n",
415 "<img src=\"$_[0]\" alt=\"\" border=0 $w $h>",
416 "</td></tr></table>\n$_[6]$_[1]$_[7]\n";
422 Converts a string to a form ok for putting in a URL, using % escaping.
428 $rv =~ s/([^A-Za-z0-9])/sprintf("%%%2.2X", ord($1))/ge;
432 =head2 un_urlize(string)
434 Converts a URL-encoded string to it's original contents - the reverse of the
442 $rv =~ s/%(..)/pack("c",hex($1))/ge;
446 =head2 include(filename)
448 Read and output the contents of the given file.
454 open(INCLUDE, &translate_filename($_[0])) || return 0;
462 =head2 copydata(in-handle, out-handle)
464 Read from one file handle and write to another, until there is no more to read.
470 $in = &callers_package($in);
471 $out = &callers_package($out);
473 while(read($in, $buf, 1024) > 0) {
474 (print $out $buf) || return 0;
479 =head2 ReadParseMime([maximum], [&cbfunc, &cbargs])
481 Read data submitted via a POST request using the multipart/form-data coding,
482 and store it in the global %in hash. The optional parameters are :
484 =item maximum - If the number of bytes of input exceeds this number, stop reading and call error.
486 =item cbfunc - A function reference to call after reading each block of data.
488 =item cbargs - Additional parameters to the callback function.
493 my ($max, $cbfunc, $cbargs) = @_;
494 my ($boundary, $line, $foo, $name, $got, $file);
495 my $err = &text('readparse_max', $max);
496 $ENV{'CONTENT_TYPE'} =~ /boundary=(.*)$/ || &error($text{'readparse_enc'});
497 if ($ENV{'CONTENT_LENGTH'} && $max && $ENV{'CONTENT_LENGTH'} > $max) {
500 &$cbfunc(0, $ENV{'CONTENT_LENGTH'}, $file, @$cbargs) if ($cbfunc);
502 <STDIN>; # skip first boundary
505 # Read section headers
509 $got += length($line);
510 &$cbfunc($got, $ENV{'CONTENT_LENGTH'}, @$cbargs) if ($cbfunc);
511 if ($max && $got > $max) {
516 if ($line =~ /^(\S+):\s*(.*)$/) {
517 $header{$lastheader = lc($1)} = $2;
519 elsif ($line =~ /^\s+(.*)$/) {
520 $header{$lastheader} .= $line;
524 # Parse out filename and type
525 if ($header{'content-disposition'} =~ /^form-data(.*)/) {
527 while ($rest =~ /([a-zA-Z]*)=\"([^\"]*)\"(.*)/) {
532 $foo = $name . "_$1";
539 &error($text{'readparse_cdheader'});
541 if ($header{'content-type'} =~ /^([^\s;]+)/) {
542 $foo = $name . "_content_type";
545 $file = $in{$name."_filename"};
548 $in{$name} .= "\0" if (defined($in{$name}));
551 $got += length($line);
552 &$cbfunc($got, $ENV{'CONTENT_LENGTH'}, $file, @$cbargs)
554 if ($max && $got > $max) {
555 #print STDERR "over limit of $max\n";
560 &$cbfunc(-1, $ENV{'CONTENT_LENGTH'}, $file, @$cbargs)
565 $ptline =~ s/[^a-zA-Z0-9\-]/\./g;
566 if (index($line, $boundary) != -1) { last; }
569 chop($in{$name}); chop($in{$name});
570 if (index($line,"$boundary--") != -1) { last; }
572 &$cbfunc(-1, $ENV{'CONTENT_LENGTH'}, $file, @$cbargs) if ($cbfunc);
575 =head2 ReadParse([&hash], [method], [noplus])
577 Fills the given hash reference with CGI parameters, or uses the global hash
578 %in if none is given. Also sets the global variables $in and @in. The other
581 =item method - For use of this HTTP method, such as GET
583 =item noplus - Don't convert + in parameters to spaces.
588 my $a = $_[0] || \%in;
590 my $meth = $_[1] ? $_[1] : $ENV{'REQUEST_METHOD'};
592 if ($meth eq 'POST') {
593 my $clen = $ENV{'CONTENT_LENGTH'};
594 &read_fully(STDIN, \$in, $clen) == $clen ||
595 &error("Failed to read POST input : $!");
597 if ($ENV{'QUERY_STRING'}) {
598 if ($in) { $in .= "&".$ENV{'QUERY_STRING'}; }
599 else { $in = $ENV{'QUERY_STRING'}; }
601 @in = split(/\&/, $in);
602 foreach my $i (@in) {
603 my ($k, $v) = split(/=/, $i, 2);
608 $k =~ s/%(..)/pack("c",hex($1))/ge;
609 $v =~ s/%(..)/pack("c",hex($1))/ge;
610 $a->{$k} = defined($a->{$k}) ? $a->{$k}."\0".$v : $v;
614 =head2 read_fully(fh, &buffer, length)
616 Read data from some file handle up to the given length, even in the face
617 of partial reads. Reads the number of bytes read. Stores received data in the
618 string pointed to be the buffer reference.
623 my ($fh, $buf, $len) = @_;
624 $fh = &callers_package($fh);
627 my $r = read(STDIN, $$buf, $len-$got, $got);
634 =head2 read_parse_mime_callback(size, totalsize, upload-id)
636 Called by ReadParseMime as new data arrives from a form-data POST. Only updates
637 the file on every 1% change though. For internal use by the upload progress
641 sub read_parse_mime_callback
643 my ($size, $totalsize, $filename, $id) = @_;
644 return if ($gconfig{'no_upload_tracker'});
647 # Create the upload tracking directory - if running as non-root, this has to
648 # be under the user's home
651 my @uinfo = @remote_user_info ? @remote_user_info : getpwuid($<);
652 $vardir = "$uinfo[7]/.tmp";
655 $vardir = $ENV{'WEBMIN_VAR'};
658 &make_dir($vardir, 0755);
661 # Remove any upload.* files more than 1 hour old
662 if (!$main::read_parse_mime_callback_flushed) {
664 opendir(UPDIR, $vardir);
665 foreach my $f (readdir(UPDIR)) {
666 next if ($f !~ /^upload\./);
667 my @st = stat("$vardir/$f");
668 if ($st[9] < $now-3600) {
669 unlink("$vardir/$f");
673 $main::read_parse_mime_callback_flushed++;
676 # Only update file once per percent
677 my $upfile = "$vardir/upload.$id";
678 if ($totalsize && $size >= 0) {
679 my $pc = int(100 * $size / $totalsize);
680 if ($pc <= $main::read_parse_mime_callback_pc{$upfile}) {
683 $main::read_parse_mime_callback_pc{$upfile} = $pc;
687 &open_tempfile(UPFILE, ">$upfile");
688 print UPFILE $size,"\n";
689 print UPFILE $totalsize,"\n";
690 print UPFILE $filename,"\n";
691 &close_tempfile(UPFILE);
694 =head2 read_parse_mime_javascript(upload-id, [&fields])
696 Returns an onSubmit= Javascript statement to popup a window for tracking
697 an upload with the given ID. For internal use by the upload progress tracker.
700 sub read_parse_mime_javascript
702 my ($id, $fields) = @_;
703 return "" if ($gconfig{'no_upload_tracker'});
704 my $opener = "window.open(\"$gconfig{'webprefix'}/uptracker.cgi?id=$id&uid=$<\", \"uptracker\", \"toolbar=no,menubar=no,scrollbars=no,width=500,height=100\");";
706 my $if = join(" || ", map { "typeof($_) != \"undefined\" && $_.value != \"\"" } @$fields);
707 return "onSubmit='if ($if) { $opener }'";
710 return "onSubmit='$opener'";
714 =head2 PrintHeader(charset)
716 Outputs the HTTP headers for an HTML page. The optional charset parameter
717 can be used to set a character set. Normally this function is not called
718 directly, but is rather called by ui_print_header or header.
723 if ($pragma_no_cache || $gconfig{'pragma_no_cache'}) {
724 print "pragma: no-cache\n";
725 print "Expires: Thu, 1 Jan 1970 00:00:00 GMT\n";
726 print "Cache-Control: no-store, no-cache, must-revalidate\n";
727 print "Cache-Control: post-check=0, pre-check=0\n";
729 if (defined($_[0])) {
730 print "Content-type: text/html; Charset=$_[0]\n\n";
733 print "Content-type: text/html\n\n";
737 =head2 header(title, image, [help], [config], [nomodule], [nowebmin], [rightside], [head-stuff], [body-stuff], [below])
739 Outputs a Webmin HTML page header with a title, including HTTP headers. The
742 =item title - The text to show at the top of the page
744 =item image - An image to show instead of the title text. This is typically left blank.
746 =item help - If set, this is the name of a help page that will be linked to in the title.
748 =item config - If set to 1, the title will contain a link to the module's config page.
750 =item nomodule - If set to 1, there will be no link in the title section to the module's index.
752 =item nowebmin - If set to 1, there will be no link in the title section to the Webmin index.
754 =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.
756 =item head-stuff - HTML to be included in the <head> section of the page.
758 =item body-stuff - HTML attributes to be include in the <body> tag.
760 =item below - HTML to be displayed below the title. Typically this is used for application or server version information.
765 return if ($main::done_webmin_header++);
767 my $charset = defined($main::force_charset) ? $main::force_charset
769 &PrintHeader($charset);
770 &load_theme_library();
771 if (defined(&theme_header)) {
772 $module_name = &get_module_name();
774 $miniserv::page_capture = 1;
777 print "<!doctype html public \"-//W3C//DTD HTML 3.2 Final//EN\">\n";
780 if (defined(&theme_prehead)) {
784 print "<meta http-equiv=\"Content-Type\" ",
785 "content=\"text/html; Charset="."e_escape($charset)."\">\n";
788 my $title = &get_html_title($_[0]);
789 print "<title>$title</title>\n";
790 print $_[7] if ($_[7]);
791 print &get_html_status_line(0);
793 print "$tconfig{'headhtml'}\n" if ($tconfig{'headhtml'});
794 if ($tconfig{'headinclude'}) {
795 print &read_file_contents(
796 "$theme_root_directory/$tconfig{'headinclude'}");
799 my $bgcolor = defined($tconfig{'cs_page'}) ? $tconfig{'cs_page'} :
800 defined($gconfig{'cs_page'}) ? $gconfig{'cs_page'} : "ffffff";
801 my $link = defined($tconfig{'cs_link'}) ? $tconfig{'cs_link'} :
802 defined($gconfig{'cs_link'}) ? $gconfig{'cs_link'} : "0000ee";
803 my $text = defined($tconfig{'cs_text'}) ? $tconfig{'cs_text'} :
804 defined($gconfig{'cs_text'}) ? $gconfig{'cs_text'} : "000000";
805 my $bgimage = defined($tconfig{'bgimage'}) ? "background=$tconfig{'bgimage'}"
807 my $dir = $current_lang_info->{'dir'} ? "dir=\"$current_lang_info->{'dir'}\""
809 print "<body bgcolor=#$bgcolor link=#$link vlink=#$link text=#$text ",
810 "$bgimage $tconfig{'inbody'} $dir $_[8]>\n";
811 if (defined(&theme_prebody)) {
814 my $hostname = &get_display_hostname();
815 my $version = &get_webmin_version();
816 my $prebody = $tconfig{'prebody'};
818 $prebody =~ s/%HOSTNAME%/$hostname/g;
819 $prebody =~ s/%VERSION%/$version/g;
820 $prebody =~ s/%USER%/$remote_user/g;
821 $prebody =~ s/%OS%/$os_type $os_version/g;
824 if ($tconfig{'prebodyinclude'}) {
826 open(INC, "$theme_root_directory/$tconfig{'prebodyinclude'}");
833 print $tconfig{'preheader'};
834 my %this_module_info = &get_module_info(&get_module_name());
835 print "<table class='header' width=100%><tr>\n";
836 if ($gconfig{'sysinfo'} == 2 && $remote_user) {
837 print "<td id='headln1' colspan=3 align=center>\n";
838 print &get_html_status_line(1);
839 print "</td></tr> <tr>\n";
841 print "<td id='headln2l' width=15% valign=top align=left>";
842 if ($ENV{'HTTP_WEBMIN_SERVERS'} && !$tconfig{'framed'}) {
843 print "<a href='$ENV{'HTTP_WEBMIN_SERVERS'}'>",
844 "$text{'header_servers'}</a><br>\n";
846 if (!$_[5] && !$tconfig{'noindex'}) {
847 my @avail = &get_available_module_infos(1);
848 my $nolo = $ENV{'ANONYMOUS_USER'} ||
849 $ENV{'SSL_USER'} || $ENV{'LOCAL_USER'} ||
850 $ENV{'HTTP_USER_AGENT'} =~ /webmin/i;
851 if ($gconfig{'gotoone'} && $main::session_id && @avail == 1 &&
853 print "<a href='$gconfig{'webprefix'}/session_login.cgi?logout=1'>",
854 "$text{'main_logout'}</a><br>";
856 elsif ($gconfig{'gotoone'} && @avail == 1 && !$nolo) {
857 print "<a href=$gconfig{'webprefix'}/switch_user.cgi>",
858 "$text{'main_switch'}</a><br>";
860 elsif (!$gconfig{'gotoone'} || @avail > 1) {
861 print "<a href='$gconfig{'webprefix'}/?cat=",
862 $this_module_info{'category'},
863 "'>$text{'header_webmin'}</a><br>\n";
866 if (!$_[4] && !$tconfig{'nomoduleindex'}) {
867 my $idx = $this_module_info{'index_link'};
868 my $mi = $module_index_link || "/".&get_module_name()."/$idx";
869 my $mt = $module_index_name || $text{'header_module'};
870 print "<a href=\"$gconfig{'webprefix'}$mi\">$mt</a><br>\n";
872 if (ref($_[2]) eq "ARRAY" && !$ENV{'ANONYMOUS_USER'} &&
873 !$tconfig{'nohelp'}) {
874 print &hlink($text{'header_help'}, $_[2]->[0], $_[2]->[1]),
877 elsif (defined($_[2]) && !$ENV{'ANONYMOUS_USER'} &&
878 !$tconfig{'nohelp'}) {
879 print &hlink($text{'header_help'}, $_[2]),"<br>\n";
882 my %access = &get_module_acl();
883 if (!$access{'noconfig'} && !$config{'noprefs'}) {
884 my $cprog = $user_module_config_directory ?
885 "uconfig.cgi" : "config.cgi";
886 print "<a href=\"$gconfig{'webprefix'}/$cprog?",
887 &get_module_name()."\">",
888 $text{'header_config'},"</a><br>\n";
893 # Title is a single image
894 print "<td id='headln2c' align=center width=70%>",
895 "<img alt=\"$_[0]\" src=\"$_[1]\"></td>\n";
899 my $ts = defined($tconfig{'titlesize'}) ?
900 $tconfig{'titlesize'} : "+2";
901 print "<td id='headln2c' align=center width=70%>",
902 ($ts ? "<font size=$ts>" : ""),$_[0],
903 ($ts ? "</font>" : "");
904 print "<br>$_[9]\n" if ($_[9]);
907 print "<td id='headln2r' width=15% valign=top align=right>";
909 print "</td></tr></table>\n";
910 print $tconfig{'postheader'};
912 $miniserv::page_capture = 1;
915 =head2 get_html_title(title)
917 Returns the full string to appear in the HTML <title> block.
924 my $os_type = $gconfig{'real_os_type'} || $gconfig{'os_type'};
925 my $os_version = $gconfig{'real_os_version'} || $gconfig{'os_version'};
926 my $host = &get_display_hostname();
927 if ($gconfig{'sysinfo'} == 1 && $remote_user) {
928 $title = sprintf "%s : %s on %s (%s %s)\n",
929 $msg, $remote_user, $host,
930 $os_type, $os_version;
932 elsif ($gconfig{'sysinfo'} == 4 && $remote_user) {
933 $title = sprintf "%s on %s (%s %s)\n",
935 $os_type, $os_version;
940 if ($gconfig{'showlogin'} && $remote_user) {
941 $title = $remote_user.($title ? " : ".$title : "");
943 if ($gconfig{'showhost'}) {
944 $title = $host.($title ? " : ".$title : "");
949 =head2 get_html_framed_title
951 Returns the title text for a framed theme main page.
954 sub get_html_framed_title
957 my $os_type = $gconfig{'real_os_type'} || $gconfig{'os_type'};
958 my $os_version = $gconfig{'real_os_version'} || $gconfig{'os_version'};
960 if (($gconfig{'sysinfo'} == 4 || $gconfig{'sysinfo'} == 1) && $remote_user) {
961 # Alternate title mode requested
962 $title = sprintf "%s on %s (%s %s)\n",
963 $remote_user, &get_display_hostname(),
964 $os_type, $os_version;
967 # Title like 'Webmin x.yy on hostname (Linux 6)'
968 if ($os_version eq "*") {
972 $ostr = "$os_type $os_version";
974 my $host = &get_display_hostname();
975 my $ver = &get_webmin_version();
976 $title = $gconfig{'nohostname'} ? $text{'main_title2'} :
977 $gconfig{'showhost'} ? &text('main_title3', $ver, $ostr) :
978 &text('main_title', $ver, $host, $ostr);
979 if ($gconfig{'showlogin'}) {
980 $title = $remote_user.($title ? " : ".$title : "");
982 if ($gconfig{'showhost'}) {
983 $title = $host.($title ? " : ".$title : "");
989 =head2 get_html_status_line(text-only)
991 Returns HTML for a script block that sets the status line, or if text-only
992 is set to 1, just return the status line text.
995 sub get_html_status_line
998 if (($gconfig{'sysinfo'} != 0 || !$remote_user) && !$textonly) {
999 # Disabled in this mode
1002 my $os_type = $gconfig{'real_os_type'} || $gconfig{'os_type'};
1003 my $os_version = $gconfig{'real_os_version'} || $gconfig{'os_version'};
1004 my $line = &text('header_statusmsg',
1005 ($ENV{'ANONYMOUS_USER'} ? "Anonymous user"
1007 ($ENV{'SSL_USER'} ? " (SSL certified)" :
1008 $ENV{'LOCAL_USER'} ? " (Local user)" : ""),
1009 $text{'programname'},
1010 &get_webmin_version(),
1011 &get_display_hostname(),
1012 $os_type.($os_version eq "*" ? "" :" $os_version"));
1017 $line =~ s/\r|\n//g;
1018 return "<script language=JavaScript type=text/javascript>\n".
1019 "defaultStatus=\""."e_escape($line)."\";\n".
1024 =head2 popup_header([title], [head-stuff], [body-stuff], [no-body])
1026 Outputs a page header, suitable for a popup window. If no title is given,
1027 absolutely no decorations are output. Also useful in framesets. The parameters
1030 =item title - Title text for the popup window.
1032 =item head-stuff - HTML to appear in the <head> section.
1034 =item body-stuff - HTML attributes to be include in the <body> tag.
1036 =item no-body - If set to 1, don't generate a body tag
1041 return if ($main::done_webmin_header++);
1043 my $charset = defined($main::force_charset) ? $main::force_charset
1045 &PrintHeader($charset);
1046 &load_theme_library();
1047 if (defined(&theme_popup_header)) {
1048 &theme_popup_header(@_);
1049 $miniserv::page_capture = 1;
1052 print "<!doctype html public \"-//W3C//DTD HTML 3.2 Final//EN\">\n";
1055 if (defined(&theme_popup_prehead)) {
1056 &theme_popup_prehead(@_);
1058 print "<title>$_[0]</title>\n";
1060 print "$tconfig{'headhtml'}\n" if ($tconfig{'headhtml'});
1061 if ($tconfig{'headinclude'}) {
1062 print &read_file_contents(
1063 "$theme_root_directory/$tconfig{'headinclude'}");
1066 my $bgcolor = defined($tconfig{'cs_page'}) ? $tconfig{'cs_page'} :
1067 defined($gconfig{'cs_page'}) ? $gconfig{'cs_page'} : "ffffff";
1068 my $link = defined($tconfig{'cs_link'}) ? $tconfig{'cs_link'} :
1069 defined($gconfig{'cs_link'}) ? $gconfig{'cs_link'} : "0000ee";
1070 my $text = defined($tconfig{'cs_text'}) ? $tconfig{'cs_text'} :
1071 defined($gconfig{'cs_text'}) ? $gconfig{'cs_text'} : "000000";
1072 my $bgimage = defined($tconfig{'bgimage'}) ? "background=$tconfig{'bgimage'}"
1075 print "<body id='popup' bgcolor=#$bgcolor link=#$link vlink=#$link ",
1076 "text=#$text $bgimage $tconfig{'inbody'} $_[2]>\n";
1077 if (defined(&theme_popup_prebody)) {
1078 &theme_popup_prebody(@_);
1081 $miniserv::page_capture = 1;
1084 =head2 footer([page, name]+, [noendbody])
1086 Outputs the footer for a Webmin HTML page, possibly with links back to other
1087 pages. The links are specified by pairs of parameters, the first of which is
1088 a link destination, and the second the link text. For example :
1090 footer('/', 'Webmin index', '', 'Module menu');
1095 $miniserv::page_capture = 0;
1096 &load_theme_library();
1097 my %this_module_info = &get_module_info(&get_module_name());
1098 if (defined(&theme_footer)) {
1099 $module_name = &get_module_name(); # Old themes use these
1100 %module_info = %this_module_info;
1104 for(my $i=0; $i+1<@_; $i+=2) {
1106 if ($url ne '/' || !$tconfig{'noindex'}) {
1108 $url = "/?cat=$this_module_info{'category'}";
1110 elsif ($url eq '' && &get_module_name()) {
1111 $url = "/".&get_module_name()."/".
1112 $this_module_info{'index_link'};
1114 elsif ($url =~ /^\?/ && &get_module_name()) {
1115 $url = "/".&get_module_name()."/$url";
1117 $url = "$gconfig{'webprefix'}$url" if ($url =~ /^\//);
1119 print "<a href=\"$url\"><img alt=\"<-\" align=middle border=0 src=$gconfig{'webprefix'}/images/left.gif></a>\n";
1124 print " <a href=\"$url\">",&text('main_return', $_[$i+1]),"</a>\n";
1129 my $postbody = $tconfig{'postbody'};
1131 my $hostname = &get_display_hostname();
1132 my $version = &get_webmin_version();
1133 my $os_type = $gconfig{'real_os_type'} ||
1134 $gconfig{'os_type'};
1135 my $os_version = $gconfig{'real_os_version'} ||
1136 $gconfig{'os_version'};
1137 $postbody =~ s/%HOSTNAME%/$hostname/g;
1138 $postbody =~ s/%VERSION%/$version/g;
1139 $postbody =~ s/%USER%/$remote_user/g;
1140 $postbody =~ s/%OS%/$os_type $os_version/g;
1141 print "$postbody\n";
1143 if ($tconfig{'postbodyinclude'}) {
1145 open(INC, "$theme_root_directory/$tconfig{'postbodyinclude'}");
1151 if (defined(&theme_postbody)) {
1152 &theme_postbody(@_);
1154 print "</body></html>\n";
1158 =head2 popup_footer([no-body])
1160 Outputs html for a footer for a popup window, started by popup_header.
1165 $miniserv::page_capture = 0;
1166 &load_theme_library();
1167 if (defined(&theme_popup_footer)) {
1168 &theme_popup_footer(@_);
1177 =head2 load_theme_library
1179 Immediately loads the current theme's theme.pl file. Not generally useful for
1180 most module developers, as this is called automatically by the header function.
1183 sub load_theme_library
1185 return if (!$current_theme || $loaded_theme_library++);
1186 for(my $i=0; $i<@theme_root_directories; $i++) {
1187 if ($theme_configs[$i]->{'functions'}) {
1188 do $theme_root_directories[$i]."/".
1189 $theme_configs[$i]->{'functions'};
1194 =head2 redirect(url)
1196 Output HTTP headers to redirect the browser to some page. The url parameter is
1197 typically a relative URL like index.cgi or list_users.cgi.
1202 my $port = $ENV{'SERVER_PORT'} == 443 && uc($ENV{'HTTPS'}) eq "ON" ? "" :
1203 $ENV{'SERVER_PORT'} == 80 && uc($ENV{'HTTPS'}) ne "ON" ? "" :
1204 ":$ENV{'SERVER_PORT'}";
1205 my $prot = uc($ENV{'HTTPS'}) eq "ON" ? "https" : "http";
1206 my $wp = $gconfig{'webprefixnoredir'} ? undef : $gconfig{'webprefix'};
1208 if ($_[0] =~ /^(http|https|ftp|gopher):/) {
1209 # Absolute URL (like http://...)
1212 elsif ($_[0] =~ /^\//) {
1213 # Absolute path (like /foo/bar.cgi)
1214 $url = "$prot://$ENV{'SERVER_NAME'}$port$wp$_[0]";
1216 elsif ($ENV{'SCRIPT_NAME'} =~ /^(.*)\/[^\/]*$/) {
1217 # Relative URL (like foo.cgi)
1218 $url = "$prot://$ENV{'SERVER_NAME'}$port$wp$1/$_[0]";
1221 $url = "$prot://$ENV{'SERVER_NAME'}$port/$wp$_[0]";
1223 &load_theme_library();
1224 if (defined(&theme_redirect)) {
1225 $module_name = &get_module_name(); # Old themes use these
1226 %module_info = &get_module_info($module_name);
1227 &theme_redirect($_[0], $url);
1230 print "Location: $url\n\n";
1234 =head2 kill_byname(name, signal)
1236 Finds a process whose command line contains the given name (such as httpd), and
1237 sends some signal to it. The signal can be numeric (like 9) or named
1243 my @pids = &find_byname($_[0]);
1244 return scalar(@pids) if (&is_readonly_mode());
1245 &webmin_debug_log('KILL', "signal=$_[1] name=$_[0]")
1246 if ($gconfig{'debug_what_procs'});
1247 if (@pids) { kill($_[1], @pids); return scalar(@pids); }
1251 =head2 kill_byname_logged(name, signal)
1253 Like kill_byname, but also logs the killing.
1256 sub kill_byname_logged
1258 my @pids = &find_byname($_[0]);
1259 return scalar(@pids) if (&is_readonly_mode());
1260 if (@pids) { &kill_logged($_[1], @pids); return scalar(@pids); }
1264 =head2 find_byname(name)
1266 Finds processes searching for the given name in their command lines, and
1267 returns a list of matching PIDs.
1272 if ($gconfig{'os_type'} =~ /-linux$/ && -r "/proc/$$/cmdline") {
1273 # Linux with /proc filesystem .. use cmdline files, as this is
1274 # faster than forking
1276 opendir(PROCDIR, "/proc");
1277 foreach my $f (readdir(PROCDIR)) {
1278 if ($f eq int($f) && $f != $$) {
1279 my $line = &read_file_contents("/proc/$f/cmdline");
1280 if ($line =~ /$_[0]/) {
1289 if (&foreign_check("proc")) {
1290 # Call the proc module
1291 &foreign_require("proc", "proc-lib.pl");
1292 if (defined(&proc::list_processes)) {
1293 my @procs = &proc::list_processes();
1295 foreach my $p (@procs) {
1296 if ($p->{'args'} =~ /$_[0]/) {
1297 push(@pids, $p->{'pid'});
1300 @pids = grep { $_ != $$ } @pids;
1305 # Fall back to running a command
1307 $cmd = $gconfig{'find_pid_command'};
1308 $cmd =~ s/NAME/"$_[0]"/g;
1309 $cmd = &translate_command($cmd);
1310 @pids = split(/\n/, `($cmd) <$null_file 2>$null_file`);
1311 @pids = grep { $_ != $$ } @pids;
1315 =head2 error([message]+)
1317 Display an error message and exit. This should be used by CGI scripts that
1318 encounter a fatal error or invalid user input to notify users of the problem.
1319 If error_setup has been called, the displayed error message will be prefixed
1320 by the message setup using that function.
1325 $main::no_miniserv_userdb = 1;
1326 my $msg = join("", @_);
1327 $msg =~ s/<[^>]*>//g;
1328 if (!$main::error_must_die) {
1329 print STDERR "Error: ",$msg,"\n";
1331 &load_theme_library();
1332 if ($main::error_must_die) {
1333 if ($gconfig{'error_stack'}) {
1334 print STDERR "Error: ",$msg,"\n";
1335 for(my $i=0; my @stack = caller($i); $i++) {
1336 print STDERR "File: $stack[1] Line: $stack[2] ",
1337 "Function: $stack[3]\n";
1342 elsif (!$ENV{'REQUEST_METHOD'}) {
1343 # Show text-only error
1344 print STDERR "$text{'error'}\n";
1345 print STDERR "-----\n";
1346 print STDERR ($main::whatfailed ? "$main::whatfailed : " : ""),
1348 print STDERR "-----\n";
1349 if ($gconfig{'error_stack'}) {
1351 print STDERR $text{'error_stack'},"\n";
1352 for(my $i=0; my @stack = caller($i); $i++) {
1353 print STDERR &text('error_stackline',
1354 $stack[1], $stack[2], $stack[3]),"\n";
1359 elsif (defined(&theme_error)) {
1363 &header($text{'error'}, "");
1365 print "<h3>",($main::whatfailed ? "$main::whatfailed : " : ""),
1367 if ($gconfig{'error_stack'}) {
1369 print "<h3>$text{'error_stack'}</h3>\n";
1371 print "<tr> <td><b>$text{'error_file'}</b></td> ",
1372 "<td><b>$text{'error_line'}</b></td> ",
1373 "<td><b>$text{'error_sub'}</b></td> </tr>\n";
1374 for($i=0; my @stack = caller($i); $i++) {
1376 print "<td>$stack[1]</td>\n";
1377 print "<td>$stack[2]</td>\n";
1378 print "<td>$stack[3]</td>\n";
1384 if ($ENV{'HTTP_REFERER'} && $main::completed_referers_check) {
1385 &footer($ENV{'HTTP_REFERER'}, $text{'error_previous'});
1391 &unlock_all_files();
1392 &cleanup_tempnames();
1396 =head2 popup_error([message]+)
1398 This function is almost identical to error, but displays the message with HTML
1399 headers suitable for a popup window.
1404 $main::no_miniserv_userdb = 1;
1405 &load_theme_library();
1406 if ($main::error_must_die) {
1409 elsif (defined(&theme_popup_error)) {
1410 &theme_popup_error(@_);
1413 &popup_header($text{'error'}, "");
1414 print "<h3>",($main::whatfailed ? "$main::whatfailed : " : ""),@_,"</h3>\n";
1417 &unlock_all_files();
1418 &cleanup_tempnames();
1422 =head2 error_setup(message)
1424 Registers a message to be prepended to all error messages displayed by the
1430 $main::whatfailed = $_[0];
1433 =head2 wait_for(handle, regexp, regexp, ...)
1435 Reads from the input stream until one of the regexps matches, and returns the
1436 index of the matching regexp, or -1 if input ended before any matched. This is
1437 very useful for parsing the output of interactive programs, and can be used with
1438 a two-way pipe to feed input to a program in response to output matched by
1441 If the matching regexp contains bracketed sub-expressions, their values will
1442 be placed in the global array @matches, indexed starting from 1. You cannot
1443 use the Perl variables $1, $2 and so on to capture matches.
1447 $rv = wait_for($loginfh, "username:");
1449 error("Didn't get username prompt");
1451 print $loginfh "joe\n";
1452 $rv = wait_for($loginfh, "password:");
1454 error("Didn't get password prompt");
1456 print $loginfh "smeg\n";
1461 my ($c, $i, $sw, $rv, $ha);
1462 undef($wait_for_input);
1463 if ($wait_for_debug) {
1464 print STDERR "wait_for(",join(",", @_),")\n";
1466 $ha = &callers_package($_[0]);
1467 if ($wait_for_debug) {
1468 print STDERR "File handle=$ha fd=",fileno($ha),"\n";
1473 " if ((\$c = getc(\$ha)) eq \"\") { return -1; }\n".
1474 " \$wait_for_input .= \$c;\n";
1475 if ($wait_for_debug) {
1476 $codes .= "print STDERR \$wait_for_input,\"\\n\";";
1478 for($i=1; $i<@_; $i++) {
1479 $sw = $i>1 ? "elsif" : "if";
1480 $codes .= " $sw (\$wait_for_input =~ /$_[$i]/i) { \$hit = $i-1; }\n";
1483 " if (defined(\$hit)) {\n".
1484 " \@matches = (-1, \$1, \$2, \$3, \$4, \$5, \$6, \$7, \$8, \$9);\n".
1490 &error("wait_for error : $@\n");
1495 =head2 fast_wait_for(handle, string, string, ...)
1497 This function behaves very similar to wait_for (documented above), but instead
1498 of taking regular expressions as parameters, it takes strings. As soon as the
1499 input contains one of them, it will return the index of the matching string.
1500 If the input ends before any match, it returns -1.
1505 my ($inp, $maxlen, $ha, $i, $c, $inpl);
1506 for($i=1; $i<@_; $i++) {
1507 $maxlen = length($_[$i]) > $maxlen ? length($_[$i]) : $maxlen;
1511 if (($c = getc($ha)) eq "") {
1512 &error("fast_wait_for read error : $!");
1515 if (length($inp) > $maxlen) {
1516 $inp = substr($inp, length($inp)-$maxlen);
1518 $inpl = length($inp);
1519 for($i=1; $i<@_; $i++) {
1520 if ($_[$i] eq substr($inp, $inpl-length($_[$i]))) {
1527 =head2 has_command(command)
1529 Returns the full path to the executable if some command is in the path, or
1530 undef if not found. If the given command is already an absolute path and
1531 exists, then the same path will be returned.
1536 if (!$_[0]) { return undef; }
1537 if (exists($main::has_command_cache{$_[0]})) {
1538 return $main::has_command_cache{$_[0]};
1541 my $slash = $gconfig{'os_type'} eq 'windows' ? '\\' : '/';
1542 if ($_[0] =~ /^\// || $_[0] =~ /^[a-z]:[\\\/]/i) {
1543 # Absolute path given - just use it
1544 my $t = &translate_filename($_[0]);
1545 $rv = (-x $t && !-d _) ? $_[0] : undef;
1548 # Check each directory in the path
1550 foreach my $d (split($path_separator, $ENV{'PATH'})) {
1551 next if ($donedir{$d}++);
1552 $d =~ s/$slash$// if ($d ne $slash);
1553 my $t = &translate_filename("$d/$_[0]");
1554 if (-x $t && !-d _) {
1555 $rv = $d.$slash.$_[0];
1558 if ($gconfig{'os_type'} eq 'windows') {
1559 foreach my $sfx (".exe", ".com", ".bat") {
1560 my $t = &translate_filename("$d/$_[0]").$sfx;
1561 if (-r $t && !-d _) {
1562 $rv = $d.$slash.$_[0].$sfx;
1569 $main::has_command_cache{$_[0]} = $rv;
1573 =head2 make_date(seconds, [date-only], [fmt])
1575 Converts a Unix date/time in seconds to a human-readable form, by default
1576 formatted like dd/mmm/yyyy hh:mm:ss. Parameters are :
1578 =item seconds - Unix time is seconds to convert.
1580 =item date-only - If set to 1, exclude the time from the returned string.
1582 =item fmt - Optional, one of dd/mon/yyyy, dd/mm/yyyy, mm/dd/yyyy or yyyy/mm/dd
1587 my ($secs, $only, $fmt) = @_;
1588 my @tm = localtime($secs);
1591 $fmt = $gconfig{'dateformat'} || 'dd/mon/yyyy';
1593 if ($fmt eq 'dd/mon/yyyy') {
1594 $date = sprintf "%2.2d/%s/%4.4d",
1595 $tm[3], $text{"smonth_".($tm[4]+1)}, $tm[5]+1900;
1597 elsif ($fmt eq 'dd/mm/yyyy') {
1598 $date = sprintf "%2.2d/%2.2d/%4.4d", $tm[3], $tm[4]+1, $tm[5]+1900;
1600 elsif ($fmt eq 'mm/dd/yyyy') {
1601 $date = sprintf "%2.2d/%2.2d/%4.4d", $tm[4]+1, $tm[3], $tm[5]+1900;
1603 elsif ($fmt eq 'yyyy/mm/dd') {
1604 $date = sprintf "%4.4d/%2.2d/%2.2d", $tm[5]+1900, $tm[4]+1, $tm[3];
1606 elsif ($fmt eq 'd. mon yyyy') {
1607 $date = sprintf "%d. %s %4.4d",
1608 $tm[3], $text{"smonth_".($tm[4]+1)}, $tm[5]+1900;
1610 elsif ($fmt eq 'dd.mm.yyyy') {
1611 $date = sprintf "%2.2d.%2.2d.%4.4d", $tm[3], $tm[4]+1, $tm[5]+1900;
1613 elsif ($fmt eq 'yyyy-mm-dd') {
1614 $date = sprintf "%4.4d-%2.2d-%2.2d", $tm[5]+1900, $tm[4]+1, $tm[3];
1617 $date .= sprintf " %2.2d:%2.2d", $tm[2], $tm[1];
1622 =head2 file_chooser_button(input, type, [form], [chroot], [addmode])
1624 Return HTML for a button that pops up a file chooser when clicked, and places
1625 the selected filename into another HTML field. The parameters are :
1627 =item input - Name of the form field to store the filename in.
1629 =item type - 0 for file or directory chooser, or 1 for directory only.
1631 =item form - Index of the form containing the button.
1633 =item chroot - If set to 1, the chooser will be limited to this directory.
1635 =item addmode - If set to 1, the selected filename will be appended to the text box instead of replacing it's contents.
1638 sub file_chooser_button
1640 return &theme_file_chooser_button(@_)
1641 if (defined(&theme_file_chooser_button));
1642 my $form = defined($_[2]) ? $_[2] : 0;
1643 my $chroot = defined($_[3]) ? $_[3] : "/";
1644 my $add = int($_[4]);
1645 my ($w, $h) = (400, 300);
1646 if ($gconfig{'db_sizefile'}) {
1647 ($w, $h) = split(/x/, $gconfig{'db_sizefile'});
1649 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";
1652 =head2 popup_window_button(url, width, height, scrollbars?, &field-mappings)
1654 Returns HTML for a button that will popup a chooser window of some kind. The
1657 =item url - Base URL of the popup window's contents
1659 =item width - Width of the window in pixels
1661 =item height - Height in pixels
1663 =item scrollbars - Set to 1 if the window should have scrollbars
1665 The field-mappings parameter is an array ref of array refs containing
1667 =item - Attribute to assign field to in the popup window
1669 =item - Form field name
1671 =item - CGI parameter to URL for value, if any
1674 sub popup_window_button
1676 return &theme_popup_window_button(@_) if (defined(&theme_popup_window_button));
1677 my ($url, $w, $h, $scroll, $fields) = @_;
1678 my $scrollyn = $scroll ? "yes" : "no";
1679 my $rv = "<input type=button onClick='";
1680 foreach my $m (@$fields) {
1681 $rv .= "$m->[0] = form.$m->[1]; ";
1683 my $sep = $url =~ /\?/ ? "&" : "?";
1684 $rv .= "chooser = window.open(\"$url\"";
1685 foreach my $m (@$fields) {
1687 $rv .= "+\"$sep$m->[2]=\"+escape($m->[0].value)";
1691 $rv .= ", \"chooser\", \"toolbar=no,menubar=no,scrollbars=$scrollyn,resizable=yes,width=$w,height=$h\"); ";
1692 foreach my $m (@$fields) {
1693 $rv .= "chooser.$m->[0] = $m->[0]; ";
1694 $rv .= "window.$m->[0] = $m->[0]; ";
1696 $rv .= "' value=\"...\">";
1700 =head2 read_acl(&user-module-hash, &user-list-hash, [&only-users])
1702 Reads the Webmin acl file into the given hash references. The first is indexed
1703 by a combined key of username,module , with the value being set to 1 when
1704 the user has access to that module. The second is indexed by username, with
1705 the value being an array ref of allowed modules.
1707 This function is deprecated in favour of foreign_available, which performs a
1708 more comprehensive check of module availability.
1710 If the only-users array ref parameter is given, the results may be limited to
1711 users in that list of names.
1716 my ($usermod, $userlist, $only) = @_;
1717 if (!%main::acl_hash_cache) {
1718 # Read from local files
1720 open(ACL, &acl_filename());
1722 if (/^([^:]+):\s*(.*)/) {
1724 my @mods = split(/\s+/, $2);
1725 foreach my $m (@mods) {
1726 $main::acl_hash_cache{$user,$m}++;
1728 $main::acl_array_cache{$user} = \@mods;
1733 %$usermod = %main::acl_hash_cache if ($usermod);
1734 %$userlist = %main::acl_array_cache if ($userlist);
1737 my $userdb = &get_userdb_string();
1738 my ($dbh, $proto, $prefix, $args) =
1739 $userdb ? &connect_userdb($userdb) : ( );
1741 if ($proto eq "mysql" || $proto eq "postgresql") {
1742 # Select usernames and modules from SQL DB
1743 my $cmd = $dbh->prepare(
1744 "select webmin_user.name,webmin_user_attr.value ".
1745 "from webmin_user,webmin_user_attr ".
1746 "where webmin_user.id = webmin_user_attr.id ".
1747 "and webmin_user_attr.attr = 'modules' ".
1748 ($only ? " and webmin_user.name in (".
1749 join(",", map { "'$_'" } @$only).")" : ""));
1750 if ($cmd && $cmd->execute()) {
1751 while(my ($user, $mods) = $cmd->fetchrow()) {
1752 my @mods = split(/\s+/, $mods);
1753 foreach my $m (@mods) {
1754 $usermod->{$user,$m}++ if ($usermod);
1756 $userlist->{$user} = \@mods if ($userlist);
1759 $cmd->finish() if ($cmd);
1761 elsif ($proto eq "ldap") {
1762 # Find users in LDAP
1763 my $filter = '(objectClass='.$args->{'userclass'}.')';
1766 "(|".join("", map { "(cn=$_)" } @$only).")";
1767 $filter = "(&".$filter.$ufilter.")";
1769 my $rv = $dbh->search(
1773 attrs => [ 'cn', 'webminModule' ]);
1774 if ($rv && !$rv->code) {
1775 foreach my $u ($rv->all_entries) {
1776 my $user = $u->get_value('cn');
1777 my @mods =$u->get_value('webminModule');
1778 foreach my $m (@mods) {
1779 $usermod->{$user,$m}++ if ($usermod);
1781 $userlist->{$user} = \@mods if ($userlist);
1785 &disconnect_userdb($userdb, $dbh);
1791 Returns the file containing the webmin ACL, which is usually
1792 /etc/webmin/webmin.acl.
1797 return "$config_directory/webmin.acl";
1802 Does nothing, but kept around for compatability.
1809 =head2 get_miniserv_config(&hash)
1811 Reads the Webmin webserver's (miniserv.pl) configuration file, usually located
1812 at /etc/webmin/miniserv.conf, and stores its names and values in the given
1816 sub get_miniserv_config
1818 return &read_file_cached(
1819 $ENV{'MINISERV_CONFIG'} || "$config_directory/miniserv.conf", $_[0]);
1822 =head2 put_miniserv_config(&hash)
1824 Writes out the Webmin webserver configuration file from the contents of
1825 the given hash ref. This should be initially populated by get_miniserv_config,
1828 get_miniserv_config(\%miniserv);
1829 $miniserv{'port'} = 10005;
1830 put_miniserv_config(\%miniserv);
1834 sub put_miniserv_config
1836 &write_file($ENV{'MINISERV_CONFIG'} || "$config_directory/miniserv.conf",
1840 =head2 restart_miniserv([nowait])
1842 Kill the old miniserv process and re-start it, then optionally waits for
1843 it to restart. This will apply all configuration settings.
1846 sub restart_miniserv
1849 return undef if (&is_readonly_mode());
1851 &get_miniserv_config(\%miniserv) || return;
1854 if ($gconfig{'os_type'} ne 'windows') {
1855 # On Unix systems, we can restart with a signal
1856 my ($pid, $addr, $i);
1857 $miniserv{'inetd'} && return;
1858 my @oldst = stat($miniserv{'pidfile'});
1859 $pid = $ENV{'MINISERV_PID'};
1861 open(PID, $miniserv{'pidfile'}) ||
1862 &error("Failed to open PID file $miniserv{'pidfile'}");
1865 $pid || &error("Invalid PID file $miniserv{'pidfile'}");
1868 # Just signal miniserv to restart
1869 &kill_logged('HUP', $pid) || &error("Incorrect Webmin PID $pid");
1871 # Wait till new PID is written, indicating a restart
1872 for($i=0; $i<60; $i++) {
1874 my @newst = stat($miniserv{'pidfile'});
1875 last if ($newst[9] != $oldst[9]);
1877 $i < 60 || &error("Webmin server did not write new PID file");
1879 ## Totally kill the process and re-run it
1880 #$SIG{'TERM'} = 'IGNORE';
1881 #&kill_logged('TERM', $pid);
1882 #&system_logged("$config_directory/start >/dev/null 2>&1 </dev/null");
1885 # On Windows, we need to use the flag file
1886 open(TOUCH, ">$miniserv{'restartflag'}");
1891 # Wait for miniserv to come back up
1892 my $addr = $miniserv{'bind'} || "127.0.0.1";
1894 for($i=0; $i<20; $i++) {
1897 &open_socket($addr, $miniserv{'port'}, STEST, \$err);
1899 last if (!$err && ++$ok >= 2);
1901 $i < 20 || &error("Failed to restart Webmin server!");
1905 =head2 reload_miniserv
1907 Sends a USR1 signal to the miniserv process, telling it to read-read it's
1908 configuration files. Not all changes will be applied though, such as the
1909 IP addresses and ports to accept connections on.
1914 return undef if (&is_readonly_mode());
1916 &get_miniserv_config(\%miniserv) || return;
1918 if ($gconfig{'os_type'} ne 'windows') {
1919 # Send a USR1 signal to re-read the config
1920 my ($pid, $addr, $i);
1921 $miniserv{'inetd'} && return;
1922 $pid = $ENV{'MINISERV_PID'};
1924 open(PID, $miniserv{'pidfile'}) ||
1925 &error("Failed to open PID file $miniserv{'pidfile'}");
1928 $pid || &error("Invalid PID file $miniserv{'pidfile'}");
1930 &kill_logged('USR1', $pid) || &error("Incorrect Webmin PID $pid");
1932 # Make sure this didn't kill Webmin!
1934 if (!kill(0, $pid)) {
1935 print STDERR "USR1 signal killed Webmin - restarting\n";
1936 &system_logged("$config_directory/start >/dev/null 2>&1 </dev/null");
1940 # On Windows, we need to use the flag file
1941 open(TOUCH, ">$miniserv{'reloadflag'}");
1946 =head2 check_os_support(&minfo, [os-type, os-version], [api-only])
1948 Returns 1 if some module is supported on the current operating system, or the
1949 OS supplies as parameters. The parameters are :
1951 =item minfo - A hash ref of module information, as returned by get_module_info
1953 =item os-type - The Webmin OS code to use instead of the system's real OS, such as redhat-linux
1955 =item os-version - The Webmin OS version to use, such as 13.0
1957 =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.
1960 sub check_os_support
1962 my $oss = $_[0]->{'os_support'};
1963 if ($_[3] && $oss && $_[0]->{'api_os_support'}) {
1964 # May provide usable API
1965 $oss .= " ".$_[0]->{'api_os_support'};
1967 if ($_[0]->{'nozone'} && &running_in_zone()) {
1968 # Not supported in a Solaris Zone
1971 if ($_[0]->{'novserver'} && &running_in_vserver()) {
1972 # Not supported in a Linux Vserver
1975 if ($_[0]->{'noopenvz'} && &running_in_openvz()) {
1976 # Not supported in an OpenVZ container
1979 return 1 if (!$oss || $oss eq '*');
1980 my $osver = $_[2] || $gconfig{'os_version'};
1981 my $ostype = $_[1] || $gconfig{'os_type'};
1984 my ($os, $ver, $codes);
1985 my ($neg) = ($oss =~ s/^!//); # starts with !
1986 $anyneg++ if ($neg);
1987 if ($oss =~ /^([^\/\s]+)\/([^\{\s]+)\{([^\}]*)\}\s*(.*)$/) {
1989 $os = $1; $ver = $2; $codes = $3; $oss = $4;
1991 elsif ($oss =~ /^([^\/\s]+)\/([^\/\s]+)\s*(.*)$/) {
1993 $os = $1; $ver = $2; $oss = $3;
1995 elsif ($oss =~ /^([^\{\s]+)\{([^\}]*)\}\s*(.*)$/) {
1997 $os = $1; $codes = $2; $oss = $3;
1999 elsif ($oss =~ /^\{([^\}]*)\}\s*(.*)$/) {
2001 $codes = $1; $oss = $2;
2003 elsif ($oss =~ /^(\S+)\s*(.*)$/) {
2005 $os = $1; $oss = $2;
2008 next if ($os && !($os eq $ostype ||
2009 $ostype =~ /^(\S+)-(\S+)$/ && $os eq "*-$2"));
2010 if ($ver =~ /^([0-9\.]+)\-([0-9\.]+)$/) {
2011 next if ($osver < $1 || $osver > $2);
2013 elsif ($ver =~ /^([0-9\.]+)\-\*$/) {
2014 next if ($osver < $1);
2016 elsif ($ver =~ /^\*\-([0-9\.]+)$/) {
2017 next if ($osver > $1);
2020 next if ($ver ne $osver);
2022 next if ($codes && !eval $codes);
2028 =head2 http_download(host, port, page, destfile, [&error], [&callback], [sslmode], [user, pass], [timeout], [osdn-convert], [no-cache], [&headers])
2030 Downloads data from a HTTP url to a local file or string. The parameters are :
2032 =item host - The hostname part of the URL, such as www.google.com
2034 =item port - The HTTP port number, such as 80
2036 =item page - The filename part of the URL, like /index.html
2038 =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.
2040 =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.
2042 =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.
2044 =item sslmode - If set to 1, an HTTPS connection is used instead of HTTP.
2046 =item user - If set, HTTP authentication is done with this username.
2048 =item pass - The HTTP password to use with the username above.
2050 =item timeout - A timeout in seconds to wait for the TCP connection to be established before failing.
2052 =item osdn-convert - If set to 1, URL for downloads from sourceforge are converted to use an appropriate mirror site.
2054 =item no-cache - If set to 1, Webmin's internal caching for this URL is disabled.
2056 =item headers - If set to a hash ref of additional HTTP headers, they will be added to the request.
2061 my ($host, $port, $page, $dest, $error, $cbfunc, $ssl, $user, $pass,
2062 $timeout, $osdn, $nocache, $headers) = @_;
2063 if ($gconfig{'debug_what_net'}) {
2064 &webmin_debug_log('HTTP', "host=$host port=$port page=$page ssl=$ssl".
2065 ($user ? " user=$user pass=$pass" : "").
2066 (ref($dest) ? "" : " dest=$dest"));
2069 # Convert OSDN URL first
2070 my $prot = $ssl ? "https://" : "http://";
2071 my $portstr = $ssl && $port == 443 ||
2072 !$ssl && $port == 80 ? "" : ":$port";
2073 ($host, $port, $page, $ssl) = &parse_http_url(
2074 &convert_osdn_url($prot.$host.$portstr.$page));
2077 # Check if we already have cached the URL
2078 my $url = ($ssl ? "https://" : "http://").$host.":".$port.$page;
2079 my $cfile = &check_in_http_cache($url);
2080 if ($cfile && !$nocache) {
2081 # Yes! Copy to dest file or variable
2082 &$cbfunc(6, $url) if ($cbfunc);
2084 &open_readfile(CACHEFILE, $cfile);
2086 $$dest = <CACHEFILE>;
2090 ©_source_dest($cfile, $dest);
2097 push(@headers, [ "Host", $host ]);
2098 push(@headers, [ "User-agent", "Webmin" ]);
2099 push(@headers, [ "Accept-language", "en" ]);
2101 my $auth = &encode_base64("$user:$pass");
2102 $auth =~ tr/\r\n//d;
2103 push(@headers, [ "Authorization", "Basic $auth" ]);
2105 foreach my $hname (keys %$headers) {
2106 push(@headers, [ $hname, $headers->{$hname} ]);
2109 # Actually download it
2110 $main::download_timed_out = undef;
2111 local $SIG{ALRM} = \&download_timeout;
2112 alarm($timeout || 60);
2113 my $h = &make_http_connection($host, $port, $ssl, "GET", $page, \@headers);
2115 $h = $main::download_timed_out if ($main::download_timed_out);
2117 if ($error) { $$error = $h; return; }
2118 else { &error($h); }
2120 &complete_http_download($h, $dest, $error, $cbfunc, $osdn, $host, $port,
2121 $headers, $ssl, $nocache);
2122 if ((!$error || !$$error) && !$nocache) {
2123 &write_to_http_cache($url, $dest);
2127 =head2 complete_http_download(handle, destfile, [&error], [&callback], [osdn], [oldhost], [oldport], [&send-headers], [old-ssl], [no-cache])
2129 Do a HTTP download, after the headers have been sent. For internal use only,
2130 typically called by http_download.
2133 sub complete_http_download
2135 local ($line, %header, @headers, $s); # Kept local so that callback funcs
2141 ($line = &read_http_connection($_[0])) =~ tr/\r\n//d;
2142 if ($line !~ /^HTTP\/1\..\s+(200|30[0-9])(\s+|$)/) {
2144 if ($_[2]) { ${$_[2]} = $line; return; }
2145 else { &error("Download failed : $line"); }
2148 &$cbfunc(1, $rcode >= 300 && $rcode < 400 ? 1 : 0)
2151 $line = &read_http_connection($_[0]);
2152 $line =~ tr/\r\n//d;
2153 $line =~ /^(\S+):\s+(.*)$/ || last;
2154 $header{lc($1)} = $2;
2155 push(@headers, [ lc($1), $2 ]);
2158 if ($main::download_timed_out) {
2159 if ($_[2]) { ${$_[2]} = $main::download_timed_out; return 0; }
2160 else { &error($main::download_timed_out); }
2162 &$cbfunc(2, $header{'content-length'}) if ($cbfunc);
2163 if ($rcode >= 300 && $rcode < 400) {
2164 # follow the redirect
2165 &$cbfunc(5, $header{'location'}) if ($cbfunc);
2166 my ($host, $port, $page, $ssl);
2167 if ($header{'location'} =~ /^(http|https):\/\/([^:]+):(\d+)(\/.*)?$/) {
2168 $ssl = $1 eq 'https' ? 1 : 0;
2169 $host = $2; $port = $3; $page = $4 || "/";
2171 elsif ($header{'location'} =~ /^(http|https):\/\/([^:\/]+)(\/.*)?$/) {
2172 $ssl = $1 eq 'https' ? 1 : 0;
2173 $host = $2; $port = 80; $page = $3 || "/";
2175 elsif ($header{'location'} =~ /^\// && $_[5]) {
2176 # Relative to same server
2180 $page = $header{'location'};
2182 elsif ($header{'location'}) {
2183 # Assume relative to same dir .. not handled
2184 if ($_[2]) { ${$_[2]} = "Invalid Location header $header{'location'}"; return; }
2185 else { &error("Invalid Location header $header{'location'}"); }
2188 if ($_[2]) { ${$_[2]} = "Missing Location header"; return; }
2189 else { &error("Missing Location header"); }
2192 ($page, $params) = split(/\?/, $page);
2194 $page .= "?".$params if (defined($params));
2195 &http_download($host, $port, $page, $_[1], $_[2], $cbfunc, $ssl,
2196 undef, undef, undef, $_[4], $_[9], $_[7]);
2201 # Append to a variable
2202 while(defined($buf = &read_http_connection($_[0], 1024))) {
2204 &$cbfunc(3, length(${$_[1]})) if ($cbfunc);
2210 if (!&open_tempfile(PFILE, ">$_[1]", 1)) {
2211 if ($_[2]) { ${$_[2]} = "Failed to write to $_[1] : $!"; return; }
2212 else { &error("Failed to write to $_[1] : $!"); }
2214 binmode(PFILE); # For windows
2215 while(defined($buf = &read_http_connection($_[0], 1024))) {
2216 &print_tempfile(PFILE, $buf);
2217 $got += length($buf);
2218 &$cbfunc(3, $got) if ($cbfunc);
2220 &close_tempfile(PFILE);
2221 if ($header{'content-length'} &&
2222 $got != $header{'content-length'}) {
2223 if ($_[2]) { ${$_[2]} = "Download incomplete"; return; }
2224 else { &error("Download incomplete"); }
2227 &$cbfunc(4) if ($cbfunc);
2229 &close_http_connection($_[0]);
2233 =head2 ftp_download(host, file, destfile, [&error], [&callback], [user, pass], [port])
2235 Download data from an FTP site to a local file. The parameters are :
2237 =item host - FTP server hostname
2239 =item file - File on the FTP server to download
2241 =item destfile - File on the Webmin system to download data to
2243 =item error - If set to a string ref, any error message is written into this string and the function returns 0 on failure, 1 on success. Otherwise, error is called on failure.
2245 =item callback - If set to a function ref, it will be called after each block of data is received. This is typically set to \&progress_callback, for printing download progress.
2247 =item user - Username to login to the FTP server as. If missing, Webmin will login as anonymous.
2249 =item pass - Password for the username above.
2251 =item port - FTP server port number, which defaults to 21 if not set.
2256 my ($host, $file, $dest, $error, $cbfunc, $user, $pass, $port) = @_;
2258 if ($gconfig{'debug_what_net'}) {
2259 &webmin_debug_log('FTP', "host=$host port=$port file=$file".
2260 ($user ? " user=$user pass=$pass" : "").
2261 (ref($dest) ? "" : " dest=$dest"));
2265 if (&is_readonly_mode()) {
2266 if ($_[3]) { ${$_[3]} = "FTP connections not allowed in readonly mode";
2268 else { &error("FTP connections not allowed in readonly mode"); }
2271 # Check if we already have cached the URL
2272 my $url = "ftp://".$host.$file;
2273 my $cfile = &check_in_http_cache($url);
2275 # Yes! Copy to dest file or variable
2276 &$cbfunc(6, $url) if ($cbfunc);
2278 &open_readfile(CACHEFILE, $cfile);
2280 $$dest = <CACHEFILE>;
2284 ©_source_dest($cfile, $dest);
2289 # Actually download it
2290 $main::download_timed_out = undef;
2291 local $SIG{ALRM} = \&download_timeout;
2294 if ($gconfig{'ftp_proxy'} =~ /^http:\/\/(\S+):(\d+)/ && !&no_proxy($_[0])) {
2295 # download through http-style proxy
2297 if (&open_socket($1, $2, "SOCK", \$error)) {
2299 if ($main::download_timed_out) {
2301 if ($_[3]) { ${$_[3]} = $main::download_timed_out; return 0; }
2302 else { &error($main::download_timed_out); }
2304 my $esc = $_[1]; $esc =~ s/ /%20/g;
2305 my $up = "$_[5]:$_[6]\@" if ($_[5]);
2306 my $portstr = $port == 21 ? "" : ":$port";
2307 print SOCK "GET ftp://$up$_[0]$portstr$esc HTTP/1.0\r\n";
2308 print SOCK "User-agent: Webmin\r\n";
2309 if ($gconfig{'proxy_user'}) {
2310 my $auth = &encode_base64(
2311 "$gconfig{'proxy_user'}:$gconfig{'proxy_pass'}");
2312 $auth =~ tr/\r\n//d;
2313 print SOCK "Proxy-Authorization: Basic $auth\r\n";
2316 &complete_http_download({ 'fh' => "SOCK" }, $_[2], $_[3], $_[4]);
2319 elsif (!$gconfig{'proxy_fallback'}) {
2321 if ($error) { $$error = $main::download_timed_out; return 0; }
2322 else { &error($main::download_timed_out); }
2327 # connect to host and login with real FTP protocol
2328 &open_socket($_[0], $port, "SOCK", $_[3]) || return 0;
2330 if ($main::download_timed_out) {
2331 if ($_[3]) { ${$_[3]} = $main::download_timed_out; return 0; }
2332 else { &error($main::download_timed_out); }
2334 &ftp_command("", 2, $_[3]) || return 0;
2336 # Login as supplied user
2337 my @urv = &ftp_command("USER $_[5]", [ 2, 3 ], $_[3]);
2339 if (int($urv[1]/100) == 3) {
2340 &ftp_command("PASS $_[6]", 2, $_[3]) || return 0;
2344 # Login as anonymous
2345 my @urv = &ftp_command("USER anonymous", [ 2, 3 ], $_[3]);
2347 if (int($urv[1]/100) == 3) {
2348 &ftp_command("PASS root\@".&get_system_hostname(), 2,
2352 &$cbfunc(1, 0) if ($cbfunc);
2355 # get the file size and tell the callback
2356 &ftp_command("TYPE I", 2, $_[3]) || return 0;
2357 my $size = &ftp_command("SIZE $_[1]", 2, $_[3]);
2358 defined($size) || return 0;
2360 &$cbfunc(2, int($size));
2364 my $pasv = &ftp_command("PASV", 2, $_[3]);
2365 defined($pasv) || return 0;
2366 $pasv =~ /\(([0-9,]+)\)/;
2367 @n = split(/,/ , $1);
2368 &open_socket("$n[0].$n[1].$n[2].$n[3]",
2369 $n[4]*256 + $n[5], "CON", $_[3]) || return 0;
2370 &ftp_command("RETR $_[1]", 1, $_[3]) || return 0;
2374 &open_tempfile(PFILE, ">$_[2]", 1);
2375 while(read(CON, $buf, 1024) > 0) {
2376 &print_tempfile(PFILE, $buf);
2377 $got += length($buf);
2378 &$cbfunc(3, $got) if ($cbfunc);
2380 &close_tempfile(PFILE);
2382 if ($got != $size) {
2383 if ($_[3]) { ${$_[3]} = "Download incomplete"; return 0; }
2384 else { &error("Download incomplete"); }
2386 &$cbfunc(4) if ($cbfunc);
2388 &ftp_command("", 2, $_[3]) || return 0;
2392 &ftp_command("QUIT", 2, $_[3]) || return 0;
2396 &write_to_http_cache($url, $dest);
2400 =head2 ftp_upload(host, file, srcfile, [&error], [&callback], [user, pass], [port])
2402 Upload data from a local file to an FTP site. The parameters are :
2404 =item host - FTP server hostname
2406 =item file - File on the FTP server to write to
2408 =item srcfile - File on the Webmin system to upload data from
2410 =item error - If set to a string ref, any error message is written into this string and the function returns 0 on failure, 1 on success. Otherwise, error is called on failure.
2412 =item callback - If set to a function ref, it will be called after each block of data is received. This is typically set to \&progress_callback, for printing upload progress.
2414 =item user - Username to login to the FTP server as. If missing, Webmin will login as anonymous.
2416 =item pass - Password for the username above.
2418 =item port - FTP server port number, which defaults to 21 if not set.
2425 if (&is_readonly_mode()) {
2426 if ($_[3]) { ${$_[3]} = "FTP connections not allowed in readonly mode";
2428 else { &error("FTP connections not allowed in readonly mode"); }
2431 $main::download_timed_out = undef;
2432 local $SIG{ALRM} = \&download_timeout;
2435 # connect to host and login
2436 &open_socket($_[0], $_[7] || 21, "SOCK", $_[3]) || return 0;
2438 if ($main::download_timed_out) {
2439 if ($_[3]) { ${$_[3]} = $main::download_timed_out; return 0; }
2440 else { &error($main::download_timed_out); }
2442 &ftp_command("", 2, $_[3]) || return 0;
2444 # Login as supplied user
2445 my @urv = &ftp_command("USER $_[5]", [ 2, 3 ], $_[3]);
2447 if (int($urv[1]/100) == 3) {
2448 &ftp_command("PASS $_[6]", 2, $_[3]) || return 0;
2452 # Login as anonymous
2453 my @urv = &ftp_command("USER anonymous", [ 2, 3 ], $_[3]);
2455 if (int($urv[1]/100) == 3) {
2456 &ftp_command("PASS root\@".&get_system_hostname(), 2,
2460 &$cbfunc(1, 0) if ($cbfunc);
2462 &ftp_command("TYPE I", 2, $_[3]) || return 0;
2464 # get the file size and tell the callback
2465 my @st = stat($_[2]);
2467 &$cbfunc(2, $st[7]);
2471 my $pasv = &ftp_command("PASV", 2, $_[3]);
2472 defined($pasv) || return 0;
2473 $pasv =~ /\(([0-9,]+)\)/;
2474 @n = split(/,/ , $1);
2475 &open_socket("$n[0].$n[1].$n[2].$n[3]", $n[4]*256 + $n[5], "CON", $_[3]) || return 0;
2476 &ftp_command("STOR $_[1]", 1, $_[3]) || return 0;
2481 while(read(PFILE, $buf, 1024) > 0) {
2483 $got += length($buf);
2484 &$cbfunc(3, $got) if ($cbfunc);
2488 if ($got != $st[7]) {
2489 if ($_[3]) { ${$_[3]} = "Upload incomplete"; return 0; }
2490 else { &error("Upload incomplete"); }
2492 &$cbfunc(4) if ($cbfunc);
2495 &ftp_command("", 2, $_[3]) || return 0;
2496 &ftp_command("QUIT", 2, $_[3]) || return 0;
2502 =head2 no_proxy(host)
2504 Checks if some host is on the no proxy list. For internal use by the
2505 http_download and ftp_download functions.
2510 my $ip = &to_ipaddress($_[0]);
2511 foreach my $n (split(/\s+/, $gconfig{'noproxy'})) {
2512 return 1 if ($_[0] =~ /\Q$n\E/ ||
2518 =head2 open_socket(host, port, handle, [&error])
2520 Open a TCP connection to some host and port, using a file handle. The
2523 =item host - Hostname or IP address to connect to.
2525 =item port - TCP port number.
2527 =item handle - A file handle name to use for the connection.
2529 =item error - A string reference to write any error message into. If not set, the error function is called on failure.
2534 my ($host, $port, $fh, $err) = @_;
2535 $fh = &callers_package($fh);
2537 if ($gconfig{'debug_what_net'}) {
2538 &webmin_debug_log('TCP', "host=$host port=$port");
2541 # Lookup IP address for the host. Try v4 first, and failing that v6
2543 my $proto = getprotobyname("tcp");
2544 if ($ip = &to_ipaddress($host)) {
2545 # Create IPv4 socket and connection
2546 if (!socket($fh, PF_INET(), SOCK_STREAM, $proto)) {
2547 my $msg = "Failed to create socket : $!";
2548 if ($err) { $$err = $msg; return 0; }
2549 else { &error($msg); }
2551 my $addr = inet_aton($ip);
2552 if ($gconfig{'bind_proxy'}) {
2553 # BIND to outgoing IP
2554 if (!bind($fh,pack_sockaddr_in(0, inet_aton($gconfig{'bind_proxy'})))) {
2555 my $msg = "Failed to bind to source address : $!";
2556 if ($err) { $$err = $msg; return 0; }
2557 else { &error($msg); }
2560 if (!connect($fh, pack_sockaddr_in($port, $addr))) {
2561 my $msg = "Failed to connect to $host:$port : $!";
2562 if ($err) { $$err = $msg; return 0; }
2563 else { &error($msg); }
2566 elsif ($ip = &to_ip6address($host)) {
2567 # Create IPv6 socket and connection
2568 if (!socket($fh, Socket6::PF_INET6(), SOCK_STREAM, $proto)) {
2569 my $msg = "Failed to create IPv6 socket : $!";
2570 if ($err) { $$err = $msg; return 0; }
2571 else { &error($msg); }
2573 my $addr = inet_pton(Socket6::AF_INET6(), $ip);
2574 if (!connect($fh, pack_sockaddr_in6($port, $addr))) {
2575 my $msg = "Failed to IPv6 connect to $host:$port : $!";
2576 if ($err) { $$err = $msg; return 0; }
2577 else { &error($msg); }
2582 my $msg = "Failed to lookup IP address for $host";
2583 if ($err) { $$err = $msg; return 0; }
2584 else { &error($msg); }
2588 my $old = select($fh);
2594 =head2 download_timeout
2596 Called when a download times out. For internal use only.
2599 sub download_timeout
2601 $main::download_timed_out = "Download timed out";
2604 =head2 ftp_command(command, expected, [&error], [filehandle])
2606 Send an FTP command, and die if the reply is not what was expected. Mainly
2607 for internal use by the ftp_download and ftp_upload functions.
2612 my ($cmd, $expect, $err, $fh) = @_;
2614 $fh = &callers_package($fh);
2617 my $what = $cmd ne "" ? "<i>$cmd</i>" : "initial connection";
2619 print $fh "$cmd\r\n";
2622 if (!($line = <$fh>)) {
2624 if ($err) { $$err = "Failed to read reply to $what"; return undef; }
2625 else { &error("Failed to read reply to $what"); }
2627 $line =~ /^(...)(.)(.*)$/;
2630 foreach my $c (@$expect) {
2631 $found++ if (int($1/100) == $c);
2635 $found++ if (int($1/100) == $_[1]);
2639 if ($err) { $$err = "$what failed : $3"; return undef; }
2640 else { &error("$what failed : $3"); }
2645 # Need to skip extra stuff..
2647 if (!($line = <$fh>)) {
2649 if ($$err) { $$err = "Failed to read reply to $what";
2651 else { &error("Failed to read reply to $what"); }
2653 $line =~ /^(....)(.*)$/; $reply .= $2;
2654 if ($1 eq "$rcode ") { last; }
2658 return wantarray ? ($reply, $rcode) : $reply;
2661 =head2 to_ipaddress(hostname)
2663 Converts a hostname to an a.b.c.d format IP address, or returns undef if
2664 it cannot be resolved.
2669 if (&check_ipaddress($_[0])) {
2670 return $_[0]; # Already in v4 format
2672 elsif (&check_ip6address($_[0])) {
2673 return undef; # A v6 address cannot be converted to v4
2676 my $hn = gethostbyname($_[0]);
2677 return undef if (!$hn);
2678 local @ip = unpack("CCCC", $hn);
2679 return join("." , @ip);
2683 =head2 to_ip6address(hostname)
2685 Converts a hostname to IPv6 address, or returns undef if it cannot be resolved.
2690 if (&check_ip6address($_[0])) {
2691 return $_[0]; # Already in v6 format
2693 elsif (&check_ipaddress($_[0])) {
2694 return undef; # A v4 address cannot be v6
2696 elsif (!&supports_ipv6()) {
2697 return undef; # Cannot lookup
2700 # Perform IPv6 DNS lookup
2702 (undef, undef, undef, $inaddr) =
2703 getaddrinfo($_[0], undef, Socket6::AF_INET6(), SOCK_STREAM);
2704 return undef if (!$inaddr);
2706 (undef, $addr) = unpack_sockaddr_in6($inaddr);
2707 return inet_ntop(Socket6::AF_INET6(), $addr);
2711 =head2 to_hostname(ipv4|ipv6-address)
2713 Reverse-resolves an IPv4 or 6 address to a hostname
2719 if (&check_ip6address($addr) && &supports_ipv6()) {
2720 return gethostbyaddr(inet_pton(Socket6::AF_INET6(), $addr),
2721 Socket6::AF_INET6());
2724 return gethostbyaddr(inet_aton($addr), AF_INET);
2728 =head2 icons_table(&links, &titles, &icons, [columns], [href], [width], [height], &befores, &afters)
2730 Renders a 4-column table of icons. The useful parameters are :
2732 =item links - An array ref of link destination URLs for the icons.
2734 =item titles - An array ref of titles to appear under the icons.
2736 =item icons - An array ref of URLs for icon images.
2738 =item columns - Number of columns to layout the icons with. Defaults to 4.
2743 &load_theme_library();
2744 if (defined(&theme_icons_table)) {
2745 &theme_icons_table(@_);
2749 my $cols = $_[3] ? $_[3] : 4;
2750 my $per = int(100.0 / $cols);
2751 print "<table class='icons_table' width=100% cellpadding=5>\n";
2752 for(my $i=0; $i<@{$_[0]}; $i++) {
2753 if ($i%$cols == 0) { print "<tr>\n"; }
2754 print "<td width=$per% align=center valign=top>\n";
2755 &generate_icon($_[2]->[$i], $_[1]->[$i], $_[0]->[$i],
2756 ref($_[4]) ? $_[4]->[$i] : $_[4], $_[5], $_[6],
2757 $_[7]->[$i], $_[8]->[$i]);
2759 if ($i%$cols == $cols-1) { print "</tr>\n"; }
2761 while($i++%$cols) { print "<td width=$per%></td>\n"; $need_tr++; }
2762 print "</tr>\n" if ($need_tr);
2766 =head2 replace_file_line(file, line, [newline]*)
2768 Replaces one line in some file with 0 or more new lines. The parameters are :
2770 =item file - Full path to some file, like /etc/hosts.
2772 =item line - Line number to replace, starting from 0.
2774 =item newline - Zero or more lines to put into the file at the given line number. These must be newline-terminated strings.
2777 sub replace_file_line
2780 my $realfile = &translate_filename($_[0]);
2781 open(FILE, $realfile);
2784 if (@_ > 2) { splice(@lines, $_[1], 1, @_[2..$#_]); }
2785 else { splice(@lines, $_[1], 1); }
2786 &open_tempfile(FILE, ">$realfile");
2787 &print_tempfile(FILE, @lines);
2788 &close_tempfile(FILE);
2791 =head2 read_file_lines(file, [readonly])
2793 Returns a reference to an array containing the lines from some file. This
2794 array can be modified, and will be written out when flush_file_lines()
2795 is called. The parameters are :
2797 =item file - Full path to the file to read.
2799 =item readonly - Should be set 1 if the caller is only going to read the lines, and never write it out.
2803 $lref = read_file_lines("/etc/hosts");
2804 push(@$lref, "127.0.0.1 localhost");
2805 flush_file_lines("/etc/hosts");
2811 my ($package, $filename, $line) = caller;
2812 print STDERR "Missing file to read at ${package}::${filename} line $line\n";
2814 my $realfile = &translate_filename($_[0]);
2815 if (!$main::file_cache{$realfile}) {
2818 &webmin_debug_log('READ', $_[0]) if ($gconfig{'debug_what_read'});
2819 open(READFILE, $realfile);
2822 $eol = /\r\n$/ ? "\r\n" : "\n";
2828 $main::file_cache{$realfile} = \@lines;
2829 $main::file_cache_noflush{$realfile} = $_[1];
2830 $main::file_cache_eol{$realfile} = $eol || "\n";
2833 # Make read-write if currently readonly
2835 $main::file_cache_noflush{$realfile} = 0;
2838 return $main::file_cache{$realfile};
2841 =head2 flush_file_lines([file], [eol])
2843 Write out to a file previously read by read_file_lines to disk (except
2844 for those marked readonly). The parameters are :
2846 =item file - The file to flush out.
2848 =item eof - End-of-line character for each line. Defaults to \n.
2851 sub flush_file_lines
2855 local $trans = &translate_filename($_[0]);
2856 $main::file_cache{$trans} ||
2857 &error("flush_file_lines called on non-loaded file $trans");
2858 push(@files, $trans);
2861 @files = ( keys %main::file_cache );
2863 foreach my $f (@files) {
2864 my $eol = $_[1] || $main::file_cache_eol{$f} || "\n";
2865 if (!$main::file_cache_noflush{$f}) {
2866 no warnings; # XXX Bareword file handles should go away
2867 &open_tempfile(FLUSHFILE, ">$f");
2868 foreach my $line (@{$main::file_cache{$f}}) {
2869 (print FLUSHFILE $line,$eol) ||
2870 &error(&text("efilewrite", $f, $!));
2872 &close_tempfile(FLUSHFILE);
2874 delete($main::file_cache{$f});
2875 delete($main::file_cache_noflush{$f});
2879 =head2 unflush_file_lines(file)
2881 Clear the internal cache of some given file, previously read by read_file_lines.
2884 sub unflush_file_lines
2886 my $realfile = &translate_filename($_[0]);
2887 delete($main::file_cache{$realfile});
2888 delete($main::file_cache_noflush{$realfile});
2891 =head2 unix_user_input(fieldname, user, [form])
2893 Returns HTML for an input to select a Unix user. By default this is a text
2894 box with a user popup button next to it.
2899 if (defined(&theme_unix_user_input)) {
2900 return &theme_unix_user_input(@_);
2902 return "<input name=$_[0] size=13 value=\"$_[1]\"> ".
2903 &user_chooser_button($_[0], 0, $_[2] || 0)."\n";
2906 =head2 unix_group_input(fieldname, user, [form])
2908 Returns HTML for an input to select a Unix group. By default this is a text
2909 box with a group popup button next to it.
2912 sub unix_group_input
2914 if (defined(&theme_unix_group_input)) {
2915 return &theme_unix_group_input(@_);
2917 return "<input name=$_[0] size=13 value=\"$_[1]\"> ".
2918 &group_chooser_button($_[0], 0, $_[2] || 0)."\n";
2921 =head2 hlink(text, page, [module], [width], [height])
2923 Returns HTML for a link that when clicked on pops up a window for a Webmin
2924 help page. The parameters are :
2926 =item text - Text for the link.
2928 =item page - Help page code, such as 'intro'.
2930 =item module - Module the help page is in. Defaults to the current module.
2932 =item width - Width of the help popup window. Defaults to 600 pixels.
2934 =item height - Height of the help popup window. Defaults to 400 pixels.
2936 The actual help pages are in each module's help sub-directory, in files with
2942 if (defined(&theme_hlink)) {
2943 return &theme_hlink(@_);
2945 my $mod = $_[2] ? $_[2] : &get_module_name();
2946 my $width = $_[3] || $tconfig{'help_width'} || $gconfig{'help_width'} || 600;
2947 my $height = $_[4] || $tconfig{'help_height'} || $gconfig{'help_height'} || 400;
2948 return "<a onClick='window.open(\"$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>";
2951 =head2 user_chooser_button(field, multiple, [form])
2953 Returns HTML for a javascript button for choosing a Unix user or users.
2954 The parameters are :
2956 =item field - Name of the HTML field to place the username into.
2958 =item multiple - Set to 1 if multiple users can be selected.
2960 =item form - Index of the form on the page.
2963 sub user_chooser_button
2965 return undef if (!&supports_users());
2966 return &theme_user_chooser_button(@_)
2967 if (defined(&theme_user_chooser_button));
2968 my $form = defined($_[2]) ? $_[2] : 0;
2969 my $w = $_[1] ? 500 : 300;
2971 if ($_[1] && $gconfig{'db_sizeusers'}) {
2972 ($w, $h) = split(/x/, $gconfig{'db_sizeusers'});
2974 elsif (!$_[1] && $gconfig{'db_sizeuser'}) {
2975 ($w, $h) = split(/x/, $gconfig{'db_sizeuser'});
2977 return "<input type=button onClick='ifield = form.$_[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";
2980 =head2 group_chooser_button(field, multiple, [form])
2982 Returns HTML for a javascript button for choosing a Unix group or groups
2983 The parameters are :
2985 =item field - Name of the HTML field to place the group name into.
2987 =item multiple - Set to 1 if multiple groups can be selected.
2989 =item form - Index of the form on the page.
2992 sub group_chooser_button
2994 return undef if (!&supports_users());
2995 return &theme_group_chooser_button(@_)
2996 if (defined(&theme_group_chooser_button));
2997 my $form = defined($_[2]) ? $_[2] : 0;
2998 my $w = $_[1] ? 500 : 300;
3000 if ($_[1] && $gconfig{'db_sizeusers'}) {
3001 ($w, $h) = split(/x/, $gconfig{'db_sizeusers'});
3003 elsif (!$_[1] && $gconfig{'db_sizeuser'}) {
3004 ($w, $h) = split(/x/, $gconfig{'db_sizeuser'});
3006 return "<input type=button onClick='ifield = form.$_[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";
3009 =head2 foreign_check(module, [api-only])
3011 Checks if some other module exists and is supported on this OS. The parameters
3014 =item module - Name of the module to check.
3016 =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.
3021 my ($mod, $api) = @_;
3023 my $mdir = &module_root_directory($mod);
3024 &read_file_cached("$mdir/module.info", \%minfo) || return 0;
3025 return &check_os_support(\%minfo, undef, undef, $api);
3028 =head2 foreign_exists(module)
3030 Checks if some other module exists. The module parameter is the short module
3036 my $mdir = &module_root_directory($_[0]);
3037 return -r "$mdir/module.info";
3040 =head2 foreign_available(module)
3042 Returns 1 if some module is installed, and acessible to the current user. The
3043 module parameter is the module directory name.
3046 sub foreign_available
3048 return 0 if (!&foreign_check($_[0]) &&
3049 !$gconfig{'available_even_if_no_support'});
3050 my %foreign_module_info = &get_module_info($_[0]);
3052 # Check list of allowed modules
3054 &read_acl(\%acl, undef, [ $base_remote_user ]);
3055 return 0 if (!$acl{$base_remote_user,$_[0]} &&
3056 !$acl{$base_remote_user,'*'});
3058 # Check for usermod restrictions
3059 my @usermods = &list_usermods();
3060 return 0 if (!&available_usermods( [ \%foreign_module_info ], \@usermods));
3062 if (&get_product_name() eq "webmin") {
3063 # Check if the user has any RBAC privileges in this module
3064 if (&supports_rbac($_[0]) &&
3065 &use_rbac_module_acl(undef, $_[0])) {
3066 # RBAC is enabled for this user and module - check if he
3068 my $rbacs = &get_rbac_module_acl($remote_user, $_[0]);
3069 return 0 if (!$rbacs);
3071 elsif ($gconfig{'rbacdeny_'.$base_remote_user}) {
3072 # If denying access to modules not specifically allowed by
3073 # RBAC, then prevent access
3078 # Check readonly support
3079 if (&is_readonly_mode()) {
3080 return 0 if (!$foreign_module_info{'readonly'});
3083 # Check if theme vetos
3084 if (defined(&theme_foreign_available)) {
3085 return 0 if (!&theme_foreign_available($_[0]));
3088 # Check if licence module vetos
3089 if ($main::licence_module) {
3090 return 0 if (!&foreign_call($main::licence_module,
3091 "check_module_licence", $_[0]));
3097 =head2 foreign_require(module, [file], [package])
3099 Brings in functions from another module, and places them in the Perl namespace
3100 with the same name as the module. The parameters are :
3102 =item module - The source module's directory name, like sendmail.
3104 =item file - The API file in that module, like sendmail-lib.pl. If missing, all API files are loaded.
3106 =item package - Perl package to place the module's functions and global variables in.
3108 If the original module name contains dashes, they will be replaced with _ in
3114 my ($mod, $file, $pkg) = @_;
3115 $pkg ||= $mod || "global";
3116 $pkg =~ s/[^A-Za-z0-9]/_/g;
3119 push(@files, $file);
3123 my %minfo = &get_module_info($mod);
3124 if ($minfo{'library'}) {
3125 @files = split(/\s+/, $minfo{'library'});
3128 @files = ( $mod."-lib.pl" );
3131 @files = grep { !$main::done_foreign_require{$pkg,$_} } @files;
3132 return 1 if (!@files);
3133 foreach my $f (@files) {
3134 $main::done_foreign_require{$pkg,$f}++;
3137 my $mdir = &module_root_directory($mod);
3138 @INC = &unique($mdir, @INC);
3139 -d $mdir || &error("Module $mod does not exist");
3140 if (!&get_module_name() && $mod) {
3143 my $old_fmn = $ENV{'FOREIGN_MODULE_NAME'};
3144 my $old_frd = $ENV{'FOREIGN_ROOT_DIRECTORY'};
3145 my $code = "package $pkg; ".
3146 "\$ENV{'FOREIGN_MODULE_NAME'} = '$mod'; ".
3147 "\$ENV{'FOREIGN_ROOT_DIRECTORY'} = '$root_directory'; ";
3148 foreach my $f (@files) {
3149 $code .= "do '$mdir/$f' || die \$@; ";
3152 if (defined($old_fmn)) {
3153 $ENV{'FOREIGN_MODULE_NAME'} = $old_fmn;
3156 delete($ENV{'FOREIGN_MODULE_NAME'});
3158 if (defined($old_frd)) {
3159 $ENV{'FOREIGN_ROOT_DIRECTORY'} = $old_frd;
3162 delete($ENV{'FOREIGN_ROOT_DIRECTORY'});
3165 if ($@) { &error("Require $mod/$files[0] failed : <pre>$@</pre>"); }
3169 =head2 foreign_call(module, function, [arg]*)
3171 Call a function in another module. The module parameter is the target module
3172 directory name, function is the perl sub to call, and the remaining parameters
3173 are the arguments. However, unless you need to call a function whose name
3174 is dynamic, it is better to use Perl's cross-module function call syntax
3175 like module::function(args).
3180 my $pkg = $_[0] || "global";
3181 $pkg =~ s/[^A-Za-z0-9]/_/g;
3182 my @args = @_[2 .. @_-1];
3183 $main::foreign_args = \@args;
3184 my @rv = eval <<EOF;
3186 &$_[1](\@{\$main::foreign_args});
3188 if ($@) { &error("$_[0]::$_[1] failed : $@"); }
3189 return wantarray ? @rv : $rv[0];
3192 =head2 foreign_config(module, [user-config])
3194 Get the configuration from another module, and return it as a hash. If the
3195 user-config parameter is set to 1, returns the Usermin user-level preferences
3196 for the current user instead.
3201 my ($mod, $uc) = @_;
3204 &read_file_cached("$root_directory/$mod/defaultuconfig", \%fconfig);
3205 &read_file_cached("$config_directory/$mod/uconfig", \%fconfig);
3206 &read_file_cached("$user_config_directory/$mod/config", \%fconfig);
3209 &read_file_cached("$config_directory/$mod/config", \%fconfig);
3214 =head2 foreign_installed(module, mode)
3216 Checks if the server for some module is installed, and possibly also checks
3217 if the module has been configured by Webmin.
3218 For mode 1, returns 2 if the server is installed and configured for use by
3219 Webmin, 1 if installed but not configured, or 0 otherwise.
3220 For mode 0, returns 1 if installed, 0 if not.
3221 If the module does not provide an install_check.pl script, assumes that
3222 the server is installed.
3225 sub foreign_installed
3227 my ($mod, $configured) = @_;
3228 if (defined($main::foreign_installed_cache{$mod,$configured})) {
3230 return $main::foreign_installed_cache{$mod,$configured};
3234 if (!&foreign_check($mod)) {
3239 my $mdir = &module_root_directory($mod);
3240 if (!-r "$mdir/install_check.pl") {
3241 # Not known, assume OK
3242 $rv = $configured ? 2 : 1;
3245 # Call function to check
3246 &foreign_require($mod, "install_check.pl");
3247 $rv = &foreign_call($mod, "is_installed", $configured);
3250 $main::foreign_installed_cache{$mod,$configured} = $rv;
3255 =head2 foreign_defined(module, function)
3257 Returns 1 if some function is defined in another module. In general, it is
3258 simpler to use the syntax &defined(module::function) instead.
3264 $pkg =~ s/[^A-Za-z0-9]/_/g;
3265 my $func = "${pkg}::$_[1]";
3266 return defined(&$func);
3269 =head2 get_system_hostname([short])
3271 Returns the hostname of this system. If the short parameter is set to 1,
3272 then the domain name is not prepended - otherwise, Webmin will attempt to get
3273 the fully qualified hostname, like foo.example.com.
3276 sub get_system_hostname
3279 if (!$main::get_system_hostname[$m]) {
3280 if ($gconfig{'os_type'} ne 'windows') {
3281 # Try some common Linux hostname files first
3283 if ($gconfig{'os_type'} eq 'redhat-linux') {
3285 &read_env_file("/etc/sysconfig/network", \%nc);
3286 if ($nc{'HOSTNAME'}) {
3287 $fromfile = $nc{'HOSTNAME'};
3290 elsif ($gconfig{'os_type'} eq 'debian-linux') {
3291 my $hn = &read_file_contents("/etc/hostname");
3297 elsif ($gconfig{'os_type'} eq 'open-linux') {
3298 my $hn = &read_file_contents("/etc/HOSTNAME");
3304 elsif ($gconfig{'os_type'} eq 'solaris') {
3305 my $hn = &read_file_contents("/etc/nodename");
3312 # If we found a hostname, use it if value
3313 if ($fromfile && ($m || $fromfile =~ /\./)) {
3315 $fromfile =~ s/\..*$//;
3317 $main::get_system_hostname[$m] = $fromfile;
3321 # Can use hostname command on Unix
3322 &execute_command("hostname", undef,
3323 \$main::get_system_hostname[$m], undef, 0, 1);
3324 chop($main::get_system_hostname[$m]);
3326 eval "use Sys::Hostname";
3328 $main::get_system_hostname[$m] = eval "hostname()";
3330 if ($@ || !$main::get_system_hostname[$m]) {
3331 $main::get_system_hostname[$m] = "UNKNOWN";
3334 elsif ($main::get_system_hostname[$m] !~ /\./ &&
3335 $gconfig{'os_type'} =~ /linux$/ &&
3336 !$gconfig{'no_hostname_f'} && !$_[0]) {
3337 # Try with -f flag to get fully qualified name
3339 my $ex = &execute_command("hostname -f", undef, \$flag,
3342 if ($ex || $flag eq "") {
3343 # -f not supported! We have probably set the
3344 # hostname to just '-f'. Fix the problem
3347 &execute_command("hostname ".
3348 quotemeta($main::get_system_hostname[$m]),
3349 undef, undef, undef, 0, 1);
3353 $main::get_system_hostname[$m] = $flag;
3358 # On Windows, try computername environment variable
3359 return $ENV{'computername'} if ($ENV{'computername'});
3360 return $ENV{'COMPUTERNAME'} if ($ENV{'COMPUTERNAME'});
3362 # Fall back to net name command
3363 my $out = `net name 2>&1`;
3364 if ($out =~ /\-+\r?\n(\S+)/) {
3365 $main::get_system_hostname[$m] = $1;
3368 $main::get_system_hostname[$m] = "windows";
3372 return $main::get_system_hostname[$m];
3375 =head2 get_webmin_version
3377 Returns the version of Webmin currently being run, such as 1.450.
3380 sub get_webmin_version
3382 if (!$get_webmin_version) {
3383 open(VERSION, "$root_directory/version") || return 0;
3384 ($get_webmin_version = <VERSION>) =~ tr/\r|\n//d;
3387 return $get_webmin_version;
3390 =head2 get_module_acl([user], [module], [no-rbac], [no-default])
3392 Returns a hash containing access control options for the given user and module.
3393 By default the current username and module name are used. If the no-rbac flag
3394 is given, the permissions will not be updated based on the user's RBAC role
3395 (as seen on Solaris). If the no-default flag is given, default permissions for
3396 the module will not be included.
3401 my $u = defined($_[0]) ? $_[0] : $base_remote_user;
3402 my $m = defined($_[1]) ? $_[1] : &get_module_name();
3403 my $mdir = &module_root_directory($m);
3406 # Read default ACL first, to be overridden by per-user settings
3407 &read_file_cached("$mdir/defaultacl", \%rv);
3409 # If this isn't a master admin user, apply the negative permissions
3410 # so that he doesn't un-expectedly gain access to new features
3412 &read_file_cached("$config_directory/$u.acl", \%gaccess);
3413 if ($gaccess{'negative'}) {
3414 &read_file_cached("$mdir/negativeacl", \%rv);
3418 if (!$_[2] && &supports_rbac($m) && &use_rbac_module_acl($u, $m)) {
3419 # RBAC overrides exist for this user in this module
3420 my $rbac = &get_rbac_module_acl(
3421 defined($_[0]) ? $_[0] : $remote_user, $m);
3422 foreach my $r (keys %$rbac) {
3423 $rv{$r} = $rbac->{$r};
3426 elsif ($gconfig{"risk_$u"} && $m) {
3427 # ACL is defined by user's risk level
3428 my $rf = $gconfig{"risk_$u"}.'.risk';
3429 &read_file_cached("$mdir/$rf", \%rv);
3431 my $sf = $gconfig{"skill_$u"}.'.skill';
3432 &read_file_cached("$mdir/$sf", \%rv);
3435 # Use normal Webmin ACL, if a user is set
3436 my $userdb = &get_userdb_string();
3438 if ($userdb && ($u ne $base_remote_user || $remote_user_proto)) {
3439 # Look for this user in the user/group DB, if one is defined
3440 # and if the user might be in the DB
3441 my ($dbh, $proto, $prefix, $args) = &connect_userdb($userdb);
3442 ref($dbh) || &error(&text('euserdbacl', $dbh));
3443 if ($proto eq "mysql" || $proto eq "postgresql") {
3444 # Find the user in the SQL DB
3445 my $cmd = $dbh->prepare(
3446 "select id from webmin_user where name = ?");
3447 $cmd && $cmd->execute($u) ||
3448 &error(&text('euserdbacl', $dbh->errstr));
3449 my ($id) = $cmd->fetchrow();
3450 $foundindb = 1 if (defined($id));
3453 # Fetch ACLs with SQL
3455 my $cmd = $dbh->prepare(
3456 "select attr,value from webmin_user_acl ".
3457 "where id = ? and module = ?");
3458 $cmd && $cmd->execute($id, $m) ||
3459 &error(&text('euserdbacl', $dbh->errstr));
3460 while(my ($a, $v) = $cmd->fetchrow()) {
3466 elsif ($proto eq "ldap") {
3468 my $rv = $dbh->search(
3470 filter => '(&(cn='.$u.')(objectClass='.
3471 $args->{'userclass'}.'))',
3473 if (!$rv || $rv->code) {
3474 &error(&text('euserdbacl',
3475 $rv ? $rv->error : "Unknown error"));
3477 my ($user) = $rv->all_entries;
3479 # Find ACL sub-object for the module
3480 my $ldapm = $m || "global";
3482 my $rv = $dbh->search(
3483 base => $user->dn(),
3484 filter => '(cn='.$ldapm.')',
3486 if (!$rv || $rv->code) {
3487 &error(&text('euserdbacl',
3488 $rv ? $rv->error : "Unknown error"));
3490 my ($acl) = $rv->all_entries;
3492 foreach my $av ($acl->get_value(
3493 'webminAclEntry')) {
3494 my ($a, $v) = split(/=/, $av,2);
3500 &disconnect_userdb($userdb, $dbh);
3504 # Read from local files
3505 &read_file_cached("$config_directory/$m/$u.acl", \%rv);
3506 if ($remote_user ne $base_remote_user && !defined($_[0])) {
3508 "$config_directory/$m/$remote_user.acl",\%rv);
3512 if ($tconfig{'preload_functions'}) {
3513 &load_theme_library();
3515 if (defined(&theme_get_module_acl)) {
3516 %rv = &theme_get_module_acl($u, $m, \%rv);
3521 =head2 get_group_module_acl(group, [module], [no-default])
3523 Returns the ACL for a Webmin group, in an optional module (which defaults to
3524 the current module).
3527 sub get_group_module_acl
3530 my $m = defined($_[1]) ? $_[1] : &get_module_name();
3531 my $mdir = &module_root_directory($m);
3534 &read_file_cached("$mdir/defaultacl", \%rv);
3537 my $userdb = &get_userdb_string();
3540 # Look for this group in the user/group DB
3541 my ($dbh, $proto, $prefix, $args) = &connect_userdb($userdb);
3542 ref($dbh) || &error(&text('egroupdbacl', $dbh));
3543 if ($proto eq "mysql" || $proto eq "postgresql") {
3544 # Find the group in the SQL DB
3545 my $cmd = $dbh->prepare(
3546 "select id from webmin_group where name = ?");
3547 $cmd && $cmd->execute($g) ||
3548 &error(&text('egroupdbacl', $dbh->errstr));
3549 my ($id) = $cmd->fetchrow();
3550 $foundindb = 1 if (defined($id));
3553 # Fetch ACLs with SQL
3555 my $cmd = $dbh->prepare(
3556 "select attr,value from webmin_group_acl ".
3557 "where id = ? and module = ?");
3558 $cmd && $cmd->execute($id, $m) ||
3559 &error(&text('egroupdbacl', $dbh->errstr));
3560 while(my ($a, $v) = $cmd->fetchrow()) {
3566 elsif ($proto eq "ldap") {
3567 # Find group in LDAP
3568 my $rv = $dbh->search(
3570 filter => '(&(cn='.$g.')(objectClass='.
3571 $args->{'groupclass'}.'))',
3573 if (!$rv || $rv->code) {
3574 &error(&text('egroupdbacl',
3575 $rv ? $rv->error : "Unknown error"));
3577 my ($group) = $rv->all_entries;
3579 # Find ACL sub-object for the module
3580 my $ldapm = $m || "global";
3582 my $rv = $dbh->search(
3583 base => $group->dn(),
3584 filter => '(cn='.$ldapm.')',
3586 if (!$rv || $rv->code) {
3587 &error(&text('egroupdbacl',
3588 $rv ? $rv->error : "Unknown error"));
3590 my ($acl) = $rv->all_entries;
3592 foreach my $av ($acl->get_value(
3593 'webminAclEntry')) {
3594 my ($a, $v) = split(/=/, $av, 2);
3600 &disconnect_userdb($userdb, $dbh);
3603 # Read from local files
3604 &read_file_cached("$config_directory/$m/$g.gacl", \%rv);
3606 if (defined(&theme_get_module_acl)) {
3607 %rv = &theme_get_module_acl($g, $m, \%rv);
3612 =head2 save_module_acl(&acl, [user], [module], [never-update-group])
3614 Updates the acl hash for some user and module. The parameters are :
3616 =item acl - Hash reference for the new access control options, or undef to clear
3618 =item user - User to update, defaulting to the current user.
3620 =item module - Module to update, defaulting to the caller.
3622 =item never-update-group - Never update the user's group's ACL
3627 my $u = defined($_[1]) ? $_[1] : $base_remote_user;
3628 my $m = defined($_[2]) ? $_[2] : &get_module_name();
3629 if (!$_[3] && &foreign_check("acl")) {
3630 # Check if this user is a member of a group, and if he gets the
3631 # module from a group. If so, update its ACL as well
3632 &foreign_require("acl", "acl-lib.pl");
3634 foreach my $g (&acl::list_groups()) {
3635 if (&indexof($u, @{$g->{'members'}}) >= 0 &&
3636 &indexof($m, @{$g->{'modules'}}) >= 0) {
3642 &save_group_module_acl($_[0], $group->{'name'}, $m);
3646 my $userdb = &get_userdb_string();
3648 if ($userdb && ($u ne $base_remote_user || $remote_user_proto)) {
3649 # Look for this user in the user/group DB
3650 my ($dbh, $proto, $prefix, $args) = &connect_userdb($userdb);
3651 ref($dbh) || &error(&text('euserdbacl', $dbh));
3652 if ($proto eq "mysql" || $proto eq "postgresql") {
3653 # Find the user in the SQL DB
3654 my $cmd = $dbh->prepare(
3655 "select id from webmin_user where name = ?");
3656 $cmd && $cmd->execute($u) ||
3657 &error(&text('euserdbacl2', $dbh->errstr));
3658 my ($id) = $cmd->fetchrow();
3659 $foundindb = 1 if (defined($id));
3662 # Replace ACLs for user
3664 my $cmd = $dbh->prepare("delete from webmin_user_acl ".
3665 "where id = ? and module = ?");
3666 $cmd && $cmd->execute($id, $m) ||
3667 &error(&text('euserdbacl', $dbh->errstr));
3670 my $cmd = $dbh->prepare(
3671 "insert into webmin_user_acl ".
3672 "(id,module,attr,value) values (?,?,?,?)");
3673 $cmd || &error(&text('euserdbacl2',
3675 foreach my $a (keys %{$_[0]}) {
3676 $cmd->execute($id,$m,$a,$_[0]->{$a}) ||
3677 &error(&text('euserdbacl2',
3684 elsif ($proto eq "ldap") {
3685 # Find the user in LDAP
3686 my $rv = $dbh->search(
3688 filter => '(&(cn='.$u.')(objectClass='.
3689 $args->{'userclass'}.'))',
3691 if (!$rv || $rv->code) {
3692 &error(&text('euserdbacl',
3693 $rv ? $rv->error : "Unknown error"));
3695 my ($user) = $rv->all_entries;
3698 # Find the ACL sub-object for the module
3700 my $ldapm = $m || "global";
3701 my $rv = $dbh->search(
3702 base => $user->dn(),
3703 filter => '(cn='.$ldapm.')',
3705 if (!$rv || $rv->code) {
3706 &error(&text('euserdbacl',
3707 $rv ? $rv->error : "Unknown error"));
3709 my ($acl) = $rv->all_entries;
3712 foreach my $a (keys %{$_[0]}) {
3713 push(@al, $a."=".$_[0]->{$a});
3717 $rv = $dbh->modify($acl->dn(),
3718 replace => { "webminAclEntry", \@al });
3722 my @attrs = ( "cn", $ldapm,
3723 "objectClass", "webminAcl",
3724 "webminAclEntry", \@al );
3725 $rv = $dbh->add("cn=".$ldapm.",".$user->dn(),
3728 if (!$rv || $rv->code) {
3729 &error(&text('euserdbacl2',
3730 $rv ? $rv->error : "Unknown error"));
3734 &disconnect_userdb($userdb, $dbh);
3738 # Save ACL to local file
3739 if (!-d "$config_directory/$m") {
3740 mkdir("$config_directory/$m", 0755);
3743 &write_file("$config_directory/$m/$u.acl", $_[0]);
3746 &unlink_file("$config_directory/$m/$u.acl");
3751 =head2 save_group_module_acl(&acl, group, [module], [never-update-group])
3753 Updates the acl hash for some group and module. The parameters are :
3755 =item acl - Hash reference for the new access control options.
3757 =item group - Group name to update.
3759 =item module - Module to update, defaulting to the caller.
3761 =item never-update-group - Never update the parent group's ACL
3764 sub save_group_module_acl
3767 my $m = defined($_[2]) ? $_[2] : &get_module_name();
3768 if (!$_[3] && &foreign_check("acl")) {
3769 # Check if this group is a member of a group, and if it gets the
3770 # module from a group. If so, update the parent ACL as well
3771 &foreign_require("acl", "acl-lib.pl");
3773 foreach my $pg (&acl::list_groups()) {
3774 if (&indexof('@'.$g, @{$pg->{'members'}}) >= 0 &&
3775 &indexof($m, @{$pg->{'modules'}}) >= 0) {
3781 &save_group_module_acl($_[0], $group->{'name'}, $m);
3785 my $userdb = &get_userdb_string();
3788 # Look for this group in the user/group DB
3789 my ($dbh, $proto, $prefix, $args) = &connect_userdb($userdb);
3790 ref($dbh) || &error(&text('egroupdbacl', $dbh));
3791 if ($proto eq "mysql" || $proto eq "postgresql") {
3792 # Find the group in the SQL DB
3793 my $cmd = $dbh->prepare(
3794 "select id from webmin_group where name = ?");
3795 $cmd && $cmd->execute($g) ||
3796 &error(&text('egroupdbacl2', $dbh->errstr));
3797 my ($id) = $cmd->fetchrow();
3798 $foundindb = 1 if (defined($id));
3801 # Replace ACLs for group
3803 my $cmd = $dbh->prepare("delete from webmin_group_acl ".
3804 "where id = ? and module = ?");
3805 $cmd && $cmd->execute($id, $m) ||
3806 &error(&text('egroupdbacl', $dbh->errstr));
3809 my $cmd = $dbh->prepare(
3810 "insert into webmin_group_acl ".
3811 "(id,module,attr,value) values (?,?,?,?)");
3812 $cmd || &error(&text('egroupdbacl2',
3814 foreach my $a (keys %{$_[0]}) {
3815 $cmd->execute($id,$m,$a,$_[0]->{$a}) ||
3816 &error(&text('egroupdbacl2',
3823 elsif ($proto eq "ldap") {
3824 # Find the group in LDAP
3825 my $rv = $dbh->search(
3827 filter => '(&(cn='.$g.')(objectClass='.
3828 $args->{'groupclass'}.'))',
3830 if (!$rv || $rv->code) {
3831 &error(&text('egroupdbacl',
3832 $rv ? $rv->error : "Unknown error"));
3834 my ($group) = $rv->all_entries;
3836 my $ldapm = $m || "global";
3838 # Find the ACL sub-object for the module
3840 my $rv = $dbh->search(
3841 base => $group->dn(),
3842 filter => '(cn='.$ldapm.')',
3844 if (!$rv || $rv->code) {
3845 &error(&text('egroupdbacl',
3846 $rv ? $rv->error : "Unknown error"));
3848 my ($acl) = $rv->all_entries;
3851 foreach my $a (keys %{$_[0]}) {
3852 push(@al, $a."=".$_[0]->{$a});
3856 $rv = $dbh->modify($acl->dn(),
3857 replace => { "webminAclEntry", \@al });
3861 my @attrs = ( "cn", $ldapm,
3862 "objectClass", "webminAcl",
3863 "webminAclEntry", \@al );
3864 $rv = $dbh->add("cn=".$ldapm.",".$group->dn(),
3867 if (!$rv || $rv->code) {
3868 &error(&text('egroupdbacl2',
3869 $rv ? $rv->error : "Unknown error"));
3873 &disconnect_userdb($userdb, $dbh);
3877 # Save ACL to local file
3878 if (!-d "$config_directory/$m") {
3879 mkdir("$config_directory/$m", 0755);
3882 &write_file("$config_directory/$m/$g.gacl", $_[0]);
3885 &unlink_file("$config_directory/$m/$g.gacl");
3892 This function must be called by all Webmin CGI scripts, either directly or
3893 indirectly via a per-module lib.pl file. It performs a number of initialization
3894 and housekeeping tasks, such as working out the module name, checking that the
3895 current user has access to the module, and populating global variables. Some
3896 of the variables set include :
3898 =item $config_directory - Base Webmin config directory, typically /etc/webmin
3900 =item $var_directory - Base logs directory, typically /var/webmin
3902 =item %config - Per-module configuration.
3904 =item %gconfig - Global configuration.
3906 =item $scriptname - Base name of the current perl script.
3908 =item $module_name - The name of the current module.
3910 =item $module_config_directory - The config directory for this module.
3912 =item $module_config_file - The config file for this module.
3914 =item $module_root_directory - This module's code directory.
3916 =item $webmin_logfile - The detailed logfile for webmin.
3918 =item $remote_user - The actual username used to login to webmin.
3920 =item $base_remote_user - The username whose permissions are in effect.
3922 =item $current_theme - The theme currently in use.
3924 =item $root_directory - The first root directory of this webmin install.
3926 =item @root_directories - All root directories for this webmin install.
3931 # Record first process ID that called this, so we know when it exited to clean
3933 $main::initial_process_id ||= $$;
3935 # Configuration and spool directories
3936 if (!defined($ENV{'WEBMIN_CONFIG'})) {
3937 die "WEBMIN_CONFIG not set";
3939 $config_directory = $ENV{'WEBMIN_CONFIG'};
3940 if (!defined($ENV{'WEBMIN_VAR'})) {
3941 open(VARPATH, "$config_directory/var-path");
3942 chop($var_directory = <VARPATH>);
3946 $var_directory = $ENV{'WEBMIN_VAR'};
3948 $main::http_cache_directory = $ENV{'WEBMIN_VAR'}."/cache";
3949 $main::default_debug_log_file = $ENV{'WEBMIN_VAR'}."/webmin.debug";
3951 if ($ENV{'SESSION_ID'}) {
3952 # Hide this variable from called programs, but keep it for internal use
3953 $main::session_id = $ENV{'SESSION_ID'};
3954 delete($ENV{'SESSION_ID'});
3956 if ($ENV{'REMOTE_PASS'}) {
3957 # Hide the password too
3958 $main::remote_pass = $ENV{'REMOTE_PASS'};
3959 delete($ENV{'REMOTE_PASS'});
3962 if ($> == 0 && $< != 0 && !$ENV{'FOREIGN_MODULE_NAME'}) {
3963 # Looks like we are running setuid, but the real UID hasn't been set.
3964 # Do so now, so that executed programs don't get confused
3969 # Read the webmin global config file. This contains the OS type and version,
3970 # OS specific configuration and global options such as proxy servers
3971 $config_file = "$config_directory/config";
3973 &read_file_cached($config_file, \%gconfig);
3974 $null_file = $gconfig{'os_type'} eq 'windows' ? "NUL" : "/dev/null";
3975 $path_separator = $gconfig{'os_type'} eq 'windows' ? ';' : ':';
3977 # If debugging is enabled, open the debug log
3978 if ($gconfig{'debug_enabled'} && !$main::opened_debug_log++) {
3979 my $dlog = $gconfig{'debug_file'} || $main::default_debug_log_file;
3980 if ($gconfig{'debug_size'}) {
3981 my @st = stat($dlog);
3982 if ($st[7] > $gconfig{'debug_size'}) {
3983 rename($dlog, $dlog.".0");
3986 open(main::DEBUGLOG, ">>$dlog");
3987 $main::opened_debug_log = 1;
3989 if ($gconfig{'debug_what_start'}) {
3990 my $script_name = $0 =~ /([^\/]+)$/ ? $1 : '-';
3991 $main::debug_log_start_time = time();
3992 &webmin_debug_log("START", "script=$script_name");
3993 $main::debug_log_start_module = $module_name;
3997 # Set PATH and LD_LIBRARY_PATH
3998 if ($gconfig{'path'}) {
3999 if ($gconfig{'syspath'}) {
4001 $ENV{'PATH'} = $gconfig{'path'};
4005 $ENV{'PATH'} = $gconfig{'path'}.$path_separator.$ENV{'PATH'};
4008 $ENV{$gconfig{'ld_env'}} = $gconfig{'ld_path'} if ($gconfig{'ld_env'});
4010 # Set http_proxy and ftp_proxy environment variables, based on Webmin settings
4011 if ($gconfig{'http_proxy'}) {
4012 $ENV{'http_proxy'} = $gconfig{'http_proxy'};
4014 if ($gconfig{'ftp_proxy'}) {
4015 $ENV{'ftp_proxy'} = $gconfig{'ftp_proxy'};
4017 if ($gconfig{'noproxy'}) {
4018 $ENV{'no_proxy'} = $gconfig{'noproxy'};
4021 # Find all root directories
4023 if (&get_miniserv_config(\%miniserv)) {
4024 @root_directories = ( $miniserv{'root'} );
4025 for($i=0; defined($miniserv{"extraroot_$i"}); $i++) {
4026 push(@root_directories, $miniserv{"extraroot_$i"});
4030 # Work out which module we are in, and read the per-module config file
4031 $0 =~ s/\\/\//g; # Force consistent path on Windows
4032 if (defined($ENV{'FOREIGN_MODULE_NAME'})) {
4033 # In a foreign call - use the module name given
4034 $root_directory = $ENV{'FOREIGN_ROOT_DIRECTORY'};
4035 $module_name = $ENV{'FOREIGN_MODULE_NAME'};
4036 @root_directories = ( $root_directory ) if (!@root_directories);
4038 elsif ($ENV{'SCRIPT_NAME'}) {
4039 my $sn = $ENV{'SCRIPT_NAME'};
4040 $sn =~ s/^$gconfig{'webprefix'}//
4041 if (!$gconfig{'webprefixnoredir'});
4042 if ($sn =~ /^\/([^\/]+)\//) {
4043 # Get module name from CGI path
4046 if ($ENV{'SERVER_ROOT'}) {
4047 $root_directory = $ENV{'SERVER_ROOT'};
4049 elsif ($ENV{'SCRIPT_FILENAME'}) {
4050 $root_directory = $ENV{'SCRIPT_FILENAME'};
4051 $root_directory =~ s/$sn$//;
4053 @root_directories = ( $root_directory ) if (!@root_directories);
4056 # Get root directory from miniserv.conf, and deduce module name from $0
4057 $root_directory = $root_directories[0];
4059 foreach my $r (@root_directories) {
4060 if ($0 =~ /^$r\/([^\/]+)\/[^\/]+$/i) {
4061 # Under a module directory
4066 elsif ($0 =~ /^$root_directory\/[^\/]+$/i) {
4072 &error("Script was not run with full path (failed to find $0 under $root_directory)") if (!$rok);
4075 # Work out of this is a web, command line or cron job
4076 if (!$main::webmin_script_type) {
4077 if ($ENV{'SCRIPT_NAME'}) {
4079 $main::webmin_script_type = 'web';
4082 # Cron jobs have no TTY
4083 if ($gconfig{'os_type'} eq 'windows' ||
4084 open(DEVTTY, ">/dev/tty")) {
4085 $main::webmin_script_type = 'cmd';
4089 $main::webmin_script_type = 'cron';
4094 # Set the umask based on config
4095 if ($gconfig{'umask'} && !$main::umask_already++) {
4096 umask(oct($gconfig{'umask'}));
4099 # If this is a cron job or other background task, set the nice level
4100 if (!$main::nice_already && $main::webmin_script_type eq 'cron') {
4102 if ($gconfig{'nice'}) {
4103 eval 'POSIX::nice($gconfig{\'nice\'});';
4106 # Set IO scheduling class and priority
4107 if ($gconfig{'sclass'} ne '' || $gconfig{'sprio'} ne '') {
4109 $cmd .= " -c ".quotemeta($gconfig{'sclass'})
4110 if ($gconfig{'sclass'} ne '');
4111 $cmd .= " -n ".quotemeta($gconfig{'sprio'})
4112 if ($gconfig{'sprio'} ne '');
4114 &execute_command("$cmd >/dev/null 2>&1");
4117 $main::nice_already++;
4120 my $u = $ENV{'BASE_REMOTE_USER'} || $ENV{'REMOTE_USER'};
4121 $base_remote_user = $u;
4122 $remote_user = $ENV{'REMOTE_USER'};
4124 # Work out if user is definitely in the DB, and if so get his attrs
4125 $remote_user_proto = $ENV{"REMOTE_USER_PROTO"};
4126 %remote_user_attrs = ( );
4127 if ($remote_user_proto) {
4128 my $userdb = &get_userdb_string();
4129 my ($dbh, $proto, $prefix, $args) =
4130 $userdb ? &connect_userdb($userdb) : ( );
4132 if ($proto eq "mysql" || $proto eq "postgresql") {
4133 # Read attrs from SQL
4134 my $cmd = $dbh->prepare("select webmin_user_attr.attr,webmin_user_attr.value from webmin_user_attr,webmin_user where webmin_user_attr.id = webmin_user.id and webmin_user.name = ?");
4135 if ($cmd && $cmd->execute($base_remote_user)) {
4136 while(my ($attr, $value) = $cmd->fetchrow()) {
4137 $remote_user_attrs{$attr} = $value;
4142 elsif ($proto eq "ldap") {
4143 # Read attrs from LDAP
4144 my $rv = $dbh->search(
4146 filter => '(&(cn='.$base_remote_user.')'.
4148 $args->{'userclass'}.'))',
4150 my ($u) = $rv && !$rv->code ? $rv->all_entries : ( );
4152 foreach $la ($u->get_value('webminAttr')) {
4153 my ($attr, $value) = split(/=/, $la, 2);
4154 $remote_user_attrs{$attr} = $value;
4158 &disconnect_userdb($userdb, $dbh);
4163 # Find and load the configuration file for this module
4164 my (@ruinfo, $rgroup);
4165 $module_config_directory = "$config_directory/$module_name";
4166 if (&get_product_name() eq "usermin" &&
4167 -r "$module_config_directory/config.$remote_user") {
4169 $module_config_file = "$module_config_directory/config.$remote_user";
4171 elsif (&get_product_name() eq "usermin" &&
4172 (@ruinfo = getpwnam($remote_user)) &&
4173 ($rgroup = getgrgid($ruinfo[3])) &&
4174 -r "$module_config_directory/config.\@$rgroup") {
4175 # Based on group name
4176 $module_config_file = "$module_config_directory/config.\@$rgroup";
4180 $module_config_file = "$module_config_directory/config";
4183 &read_file_cached($module_config_file, \%config);
4185 # Fix up windows-specific substitutions in values
4186 foreach my $k (keys %config) {
4187 if ($config{$k} =~ /\$\{systemroot\}/) {
4188 my $root = &get_windows_root();
4189 $config{$k} =~ s/\$\{systemroot\}/$root/g;
4194 # Record the initial module
4195 $main::initial_module_name ||= $module_name;
4197 # Set some useful variables
4199 $current_themes = $ENV{'MOBILE_DEVICE'} && defined($gconfig{'mobile_theme'}) ?
4200 $gconfig{'mobile_theme'} :
4201 defined($remote_user_attrs{'theme'}) ?
4202 $remote_user_attrs{'theme'} :
4203 defined($gconfig{'theme_'.$remote_user}) ?
4204 $gconfig{'theme_'.$remote_user} :
4205 defined($gconfig{'theme_'.$base_remote_user}) ?
4206 $gconfig{'theme_'.$base_remote_user} :
4208 @current_themes = split(/\s+/, $current_themes);
4209 $current_theme = $current_themes[0];
4210 @theme_root_directories = map { "$root_directory/$_" } @current_themes;
4211 $theme_root_directory = $theme_root_directories[0];
4212 @theme_configs = ( );
4213 foreach my $troot (@theme_root_directories) {
4215 &read_file_cached("$troot/config", \%onetconfig);
4216 &read_file_cached("$troot/config", \%tconfig);
4217 push(@theme_configs, \%onetconfig);
4219 $tb = defined($tconfig{'cs_header'}) ? "bgcolor=#$tconfig{'cs_header'}" :
4220 defined($gconfig{'cs_header'}) ? "bgcolor=#$gconfig{'cs_header'}" :
4222 $cb = defined($tconfig{'cs_table'}) ? "bgcolor=#$tconfig{'cs_table'}" :
4223 defined($gconfig{'cs_table'}) ? "bgcolor=#$gconfig{'cs_table'}" :
4225 $tb .= ' '.$tconfig{'tb'} if ($tconfig{'tb'});
4226 $cb .= ' '.$tconfig{'cb'} if ($tconfig{'cb'});
4227 if ($tconfig{'preload_functions'}) {
4228 # Force load of theme functions right now, if requested
4229 &load_theme_library();
4231 if ($tconfig{'oofunctions'} && !$main::loaded_theme_oo_library++) {
4232 # Load the theme's Webmin:: package classes
4233 do "$theme_root_directory/$tconfig{'oofunctions'}";
4238 $webmin_logfile = $gconfig{'webmin_log'} ? $gconfig{'webmin_log'}
4239 : "$var_directory/webmin.log";
4241 # Load language strings into %text
4242 my @langs = &list_languages();
4244 if ($gconfig{'acceptlang'}) {
4245 foreach my $a (split(/,/, $ENV{'HTTP_ACCEPT_LANGUAGE'})) {
4246 my ($al) = grep { $_->{'lang'} eq $a } @langs;
4248 $accepted_lang = $al->{'lang'};
4253 $current_lang = $force_lang ? $force_lang :
4254 $accepted_lang ? $accepted_lang :
4255 $remote_user_attrs{'lang'} ? $remote_user_attrs{'lang'} :
4256 $gconfig{"lang_$remote_user"} ? $gconfig{"lang_$remote_user"} :
4257 $gconfig{"lang_$base_remote_user"} ? $gconfig{"lang_$base_remote_user"} :
4258 $gconfig{"lang"} ? $gconfig{"lang"} : $default_lang;
4259 foreach my $l (@langs) {
4260 $current_lang_info = $l if ($l->{'lang'} eq $current_lang);
4262 @lang_order_list = &unique($default_lang,
4263 split(/:/, $current_lang_info->{'fallback'}),
4265 %text = &load_language($module_name);
4266 %text || &error("Failed to determine Webmin root from SERVER_ROOT, SCRIPT_FILENAME or the full command line");
4268 # Get the %module_info for this module
4270 my ($mi) = grep { $_->{'dir'} eq $module_name }
4271 &get_all_module_infos(2);
4272 %module_info = %$mi;
4273 $module_root_directory = &module_root_directory($module_name);
4276 if ($module_name && !$main::no_acl_check &&
4277 !defined($ENV{'FOREIGN_MODULE_NAME'})) {
4278 # Check if the HTTP user can access this module
4279 if (!&foreign_available($module_name)) {
4280 if (!&foreign_check($module_name)) {
4281 &error(&text('emodulecheck',
4282 "<i>$module_info{'desc'}</i>"));
4285 &error(&text('emodule', "<i>$u</i>",
4286 "<i>$module_info{'desc'}</i>"));
4289 $main::no_acl_check++;
4292 # Check the Referer: header for nasty redirects
4293 my @referers = split(/\s+/, $gconfig{'referers'});
4295 my $r = $ENV{'HTTP_REFERER'};
4296 if ($r =~ /^(http|https|ftp):\/\/([^:\/]+:[^@\/]+@)?\[([^\]]+)\]/ ||
4297 $r =~ /^(http|https|ftp):\/\/([^:\/]+:[^@\/]+@)?([^\/:@]+)/) {
4300 my $http_host = $ENV{'HTTP_HOST'};
4301 $http_host =~ s/:\d+$//;
4302 $http_host =~ s/^\[(\S+)\]$/$1/;
4303 my $unsafe_index = $unsafe_index_cgi ||
4304 &get_module_variable('$unsafe_index_cgi');
4306 ($ENV{'SCRIPT_NAME'} !~ /^\/(index.cgi)?$/ || $unsafe_index) &&
4307 ($ENV{'SCRIPT_NAME'} !~ /^\/([a-z0-9\_\-]+)\/(index.cgi)?$/i ||
4309 $0 !~ /(session_login|pam_login)\.cgi$/ && !$gconfig{'referer'} &&
4310 $ENV{'MINISERV_CONFIG'} && !$main::no_referers_check &&
4311 $ENV{'HTTP_USER_AGENT'} !~ /^Webmin/i &&
4312 ($referer_site && $referer_site ne $http_host &&
4313 &indexof($referer_site, @referers) < 0 ||
4314 !$referer_site && $gconfig{'referers_none'}) &&
4315 !$trust_unknown_referers &&
4316 !&get_module_variable('$trust_unknown_referers')) {
4317 # Looks like a link from elsewhere .. show an error
4318 &header($text{'referer_title'}, "", undef, 0, 1, 1);
4320 $prot = lc($ENV{'HTTPS'}) eq 'on' ? "https" : "http";
4321 my $url = "<tt>".&html_escape("$prot://$ENV{'HTTP_HOST'}$ENV{'REQUEST_URI'}")."</tt>";
4322 if ($referer_site) {
4324 print &text('referer_warn',
4325 "<tt>".&html_escape($r)."</tt>", $url);
4327 print &text('referer_fix1', &html_escape($http_host)),"<p>\n";
4328 print &text('referer_fix2', &html_escape($http_host)),"<p>\n";
4331 # No referer info given
4332 print &text('referer_warn_unknown', $url),"<p>\n";
4333 print &text('referer_fix1u'),"<p>\n";
4334 print &text('referer_fix2u'),"<p>\n";
4338 &footer("/", $text{'index'});
4341 $main::no_referers_check++;
4342 $main::completed_referers_check++;
4344 # Call theme post-init
4345 if (defined(&theme_post_init_config)) {
4346 &theme_post_init_config(@_);
4349 # Record that we have done the calling library in this package
4350 my ($callpkg, $lib) = caller();
4352 $main::done_foreign_require{$callpkg,$lib} = 1;
4354 # If a licence checking is enabled, do it now
4355 if ($gconfig{'licence_module'} && !$main::done_licence_module_check &&
4356 &foreign_check($gconfig{'licence_module'}) &&
4357 -r "$root_directory/$gconfig{'licence_module'}/licence_check.pl") {
4358 my $oldpwd = &get_current_dir();
4359 $main::done_licence_module_check++;
4360 $main::licence_module = $gconfig{'licence_module'};
4361 &foreign_require($main::licence_module, "licence_check.pl");
4362 ($main::licence_status, $main::licence_message) =
4363 &foreign_call($main::licence_module, "check_licence");
4367 # Export global variables to caller
4368 if ($main::export_to_caller) {
4369 foreach my $v ('$config_file', '%gconfig', '$null_file',
4370 '$path_separator', '@root_directories',
4371 '$root_directory', '$module_name',
4372 '$base_remote_user', '$remote_user',
4373 '$remote_user_proto', '%remote_user_attrs',
4374 '$module_config_directory', '$module_config_file',
4375 '%config', '@current_themes', '$current_theme',
4376 '@theme_root_directories', '$theme_root_directory',
4377 '%tconfig','@theme_configs', '$tb', '$cb', '$scriptname',
4378 '$webmin_logfile', '$current_lang',
4379 '$current_lang_info', '@lang_order_list', '%text',
4380 '%module_info', '$module_root_directory') {
4381 my ($vt, $vn) = split('', $v, 2);
4382 eval "${vt}${callpkg}::${vn} = ${vt}${vn}";
4389 =head2 load_language([module], [directory])
4391 Returns a hashtable mapping text codes to strings in the appropriate language,
4392 based on the $current_lang global variable, which is in turn set based on
4393 the Webmin user's selection. The optional module parameter tells the function
4394 which module to load strings for, and defaults to the calling module. The
4395 optional directory parameter can be used to load strings from a directory
4398 In regular module development you will never need to call this function
4399 directly, as init_config calls it for you, and places the module's strings
4400 into the %text hash.
4406 my $root = $root_directory;
4407 my $ol = $gconfig{'overlang'};
4408 my ($dir) = ($_[1] || "lang");
4410 # Read global lang files
4411 foreach my $o (@lang_order_list) {
4412 my $ok = &read_file_cached("$root/$dir/$o", \%text);
4413 return () if (!$ok && $o eq $default_lang);
4416 foreach my $o (@lang_order_list) {
4417 &read_file_cached("$root/$ol/$o", \%text);
4420 &read_file_cached("$config_directory/custom-lang", \%text);
4423 # Read module's lang files
4424 my $mdir = &module_root_directory($_[0]);
4425 foreach my $o (@lang_order_list) {
4426 &read_file_cached("$mdir/$dir/$o", \%text);
4429 foreach $o (@lang_order_list) {
4430 &read_file_cached("$mdir/$ol/$o", \%text);
4433 &read_file_cached("$config_directory/$_[0]/custom-lang", \%text);
4435 foreach $k (keys %text) {
4436 $text{$k} =~ s/\$(\{([^\}]+)\}|([A-Za-z0-9\.\-\_]+))/text_subs($2 || $3,\%text)/ge;
4439 if (defined(&theme_load_language)) {
4440 &theme_load_language(\%text, $_[0]);
4445 =head2 text_subs(string)
4447 Used internally by load_language to expand $code substitutions in language
4453 if (substr($_[0], 0, 8) eq "include:") {
4456 open(INCLUDE, substr($_[0], 8));
4464 my $t = $_[1]->{$_[0]};
4465 return defined($t) ? $t : '$'.$_[0];
4469 =head2 text(message, [substitute]+)
4471 Returns a translated message from %text, but with $1, $2, etc.. replaced with
4472 the substitute parameters. This makes it easy to use strings with placeholders
4473 that get replaced with programmatically generated text. For example :
4475 print &text('index_hello', $remote_user),"<p>\n";
4480 my $t = &get_module_variable('%text', 1);
4481 my $rv = exists($t->{$_[0]}) ? $t->{$_[0]} : $text{$_[0]};
4482 for(my $i=1; $i<@_; $i++) {
4483 $rv =~ s/\$$i/$_[$i]/g;
4488 =head2 encode_base64(string)
4490 Encodes a string into base64 format, for use in MIME email or HTTP
4491 authorization headers.
4497 pos($_[0]) = 0; # ensure start at the beginning
4498 while ($_[0] =~ /(.{1,57})/gs) {
4499 $res .= substr(pack('u57', $1), 1)."\n";
4502 $res =~ tr|\` -_|AA-Za-z0-9+/|;
4503 my $padding = (3 - length($_[0]) % 3) % 3;
4504 $res =~ s/.{$padding}$/'=' x $padding/e if ($padding);
4508 =head2 decode_base64(string)
4510 Converts a base64-encoded string into plain text. The opposite of encode_base64.
4517 $str =~ tr|A-Za-z0-9+=/||cd; # remove non-base64 chars
4518 if (length($str) % 4) {
4521 $str =~ s/=+$//; # remove padding
4522 $str =~ tr|A-Za-z0-9+/| -_|; # convert to uuencoded format
4523 while ($str =~ /(.{1,60})/gs) {
4524 my $len = chr(32 + length($1)*3/4); # compute length byte
4525 $res .= unpack("u", $len . $1 ); # uudecode
4530 =head2 get_module_info(module, [noclone], [forcache])
4532 Returns a hash containg details of the given module. Some useful keys are :
4534 =item dir - The module directory, like sendmail.
4536 =item desc - Human-readable description, in the current users' language.
4538 =item version - Optional module version number.
4540 =item os_support - List of supported operating systems and versions.
4542 =item category - Category on Webmin's left menu, like net.
4547 return () if ($_[0] =~ /^\./);
4548 my (%rv, $clone, $o);
4549 my $mdir = &module_root_directory($_[0]);
4550 &read_file_cached("$mdir/module.info", \%rv) || return ();
4552 # A clone is a module that links to another directory under the root
4553 foreach my $r (@root_directories) {
4554 if (&is_under_directory($r, $mdir)) {
4560 foreach $o (@lang_order_list) {
4561 $rv{"desc"} = $rv{"desc_$o"} if ($rv{"desc_$o"});
4562 $rv{"longdesc"} = $rv{"longdesc_$o"} if ($rv{"longdesc_$o"});
4564 if ($clone && !$_[1] && $config_directory) {
4565 $rv{'clone'} = $rv{'desc'};
4566 &read_file("$config_directory/$_[0]/clone", \%rv);
4569 my %module_categories;
4570 &read_file_cached("$config_directory/webmin.cats", \%module_categories);
4571 my $pn = &get_product_name();
4572 if (defined($rv{'category_'.$pn})) {
4573 # Can override category for webmin/usermin
4574 $rv{'category'} = $rv{'category_'.$pn};
4576 $rv{'realcategory'} = $rv{'category'};
4577 $rv{'category'} = $module_categories{$_[0]}
4578 if (defined($module_categories{$_[0]}));
4580 # Apply description overrides
4581 $rv{'realdesc'} = $rv{'desc'};
4583 &read_file_cached("$config_directory/webmin.descs", \%descs);
4584 if ($descs{$_[0]." ".$current_lang}) {
4585 $rv{'desc'} = $descs{$_[0]." ".$current_lang};
4587 elsif ($descs{$_[0]}) {
4588 $rv{'desc'} = $descs{$_[0]};
4592 # Apply per-user description overridde
4593 my %gaccess = &get_module_acl(undef, "");
4594 if ($gaccess{'desc_'.$_[0]}) {
4595 $rv{'desc'} = $gaccess{'desc_'.$_[0]};
4599 if ($rv{'longdesc'}) {
4600 # All standard modules have an index.cgi
4601 $rv{'index_link'} = 'index.cgi';
4604 # Call theme-specific override function
4605 if (defined(&theme_get_module_info)) {
4606 %rv = &theme_get_module_info(\%rv, $_[0], $_[1], $_[2]);
4612 =head2 get_all_module_infos(cachemode)
4614 Returns a list contains the information on all modules in this webmin
4615 install, including clones. Uses caching to reduce the number of module.info
4616 files that need to be read. Each element of the array is a hash reference
4617 in the same format as returned by get_module_info. The cache mode flag can be :
4618 0 = read and write, 1 = don't read or write, 2 = read only
4621 sub get_all_module_infos
4625 # Is the cache out of date? (ie. have any of the root's changed?)
4626 my $cache_file = "$config_directory/module.infos.cache";
4628 if (&read_file_cached($cache_file, \%cache)) {
4629 foreach my $r (@root_directories) {
4631 if ($st[9] != $cache{'mtime_'.$r}) {
4641 if ($_[0] != 1 && !$changed && $cache{'lang'} eq $current_lang) {
4642 # Can use existing module.info cache
4644 foreach my $k (keys %cache) {
4645 if ($k =~ /^(\S+) (\S+)$/) {
4646 $mods{$1}->{$2} = $cache{$k};
4649 @rv = map { $mods{$_} } (keys %mods) if (%mods);
4652 # Need to rebuild cache
4654 foreach my $r (@root_directories) {
4656 foreach my $m (readdir(DIR)) {
4657 next if ($m =~ /^(config-|\.)/ || $m =~ /\.(cgi|pl)$/);
4658 my %minfo = &get_module_info($m, 0, 1);
4659 next if (!%minfo || !$minfo{'dir'});
4661 foreach $k (keys %minfo) {
4662 $cache{"${m} ${k}"} = $minfo{$k};
4667 $cache{'mtime_'.$r} = $st[9];
4669 $cache{'lang'} = $current_lang;
4670 &write_file($cache_file, \%cache) if (!$_[0] && $< == 0 && $> == 0);
4673 # Override descriptions for modules for current user
4674 my %gaccess = &get_module_acl(undef, "");
4675 foreach my $m (@rv) {
4676 if ($gaccess{"desc_".$m->{'dir'}}) {
4677 $m->{'desc'} = $gaccess{"desc_".$m->{'dir'}};
4681 # Apply installed flags
4683 &read_file_cached("$config_directory/installed.cache", \%installed);
4684 foreach my $m (@rv) {
4685 $m->{'installed'} = $installed{$m->{'dir'}};
4691 =head2 get_theme_info(theme)
4693 Returns a hash containing a theme's details, taken from it's theme.info file.
4694 Some useful keys are :
4696 =item dir - The theme directory, like blue-theme.
4698 =item desc - Human-readable description, in the current users' language.
4700 =item version - Optional module version number.
4702 =item os_support - List of supported operating systems and versions.
4707 return () if ($_[0] =~ /^\./);
4709 my $tdir = &module_root_directory($_[0]);
4710 &read_file("$tdir/theme.info", \%rv) || return ();
4711 foreach my $o (@lang_order_list) {
4712 $rv{"desc"} = $rv{"desc_$o"} if ($rv{"desc_$o"});
4718 =head2 list_languages
4720 Returns an array of supported languages, taken from Webmin's os_list.txt file.
4721 Each is a hash reference with the following keys :
4723 =item lang - The short language code, like es for Spanish.
4725 =item desc - A human-readable description, in English.
4727 =item charset - An optional character set to use when displaying the language.
4729 =item titles - Set to 1 only if Webmin has title images for the language.
4731 =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.
4736 if (!@main::list_languages_cache) {
4739 open(LANG, "$root_directory/lang_list.txt");
4741 if (/^(\S+)\s+(.*)/) {
4742 my $l = { 'desc' => $2 };
4743 foreach $o (split(/,/, $1)) {
4744 if ($o =~ /^([^=]+)=(.*)$/) {
4748 $l->{'index'} = scalar(@rv);
4749 push(@main::list_languages_cache, $l);
4753 @main::list_languages_cache = sort { $a->{'desc'} cmp $b->{'desc'} }
4754 @main::list_languages_cache;
4756 return @main::list_languages_cache;
4759 =head2 read_env_file(file, &hash)
4761 Similar to Webmin's read_file function, but handles files containing shell
4762 environment variables formatted like :
4767 The file parameter is the full path to the file to read, and hash a Perl hash
4768 ref to read names and values into.
4774 &open_readfile(FILE, $_[0]) || return 0;
4777 if (/^\s*(export\s*)?([A-Za-z0-9_\.]+)\s*=\s*"(.*)"/i ||
4778 /^\s*(export\s*)?([A-Za-z0-9_\.]+)\s*=\s*'(.*)'/i ||
4779 /^\s*(export\s*)?([A-Za-z0-9_\.]+)\s*=\s*(.*)/i) {
4787 =head2 write_env_file(file, &hash, [export])
4789 Writes out a hash to a file in name='value' format, suitable for use in a shell
4790 script. The parameters are :
4792 =item file - Full path for a file to write to
4794 =item hash - Hash reference of names and values to write.
4796 =item export - If set to 1, preceed each variable setting with the word 'export'.
4801 my $exp = $_[2] ? "export " : "";
4802 &open_tempfile(FILE, ">$_[0]");
4803 foreach my $k (keys %{$_[1]}) {
4804 my $v = $_[1]->{$k};
4805 if ($v =~ /^\S+$/) {
4806 &print_tempfile(FILE, "$exp$k=$v\n");
4809 &print_tempfile(FILE, "$exp$k=\"$v\"\n");
4812 &close_tempfile(FILE);
4815 =head2 lock_file(filename, [readonly], [forcefile])
4817 Lock a file for exclusive access. If the file is already locked, spin
4818 until it is freed. Uses a .lock file, which is not 100% reliable, but seems
4819 to work OK. The parameters are :
4821 =item filename - File or directory to lock.
4823 =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.
4825 =item forcefile - Force the file to be considered as a real file and not a symlink for Webmin actions logging purposes.
4830 my $realfile = &translate_filename($_[0]);
4831 return 0 if (!$_[0] || defined($main::locked_file_list{$realfile}));
4832 my $no_lock = !&can_lock_file($realfile);
4833 my $lock_tries_count = 0;
4836 if (!$no_lock && open(LOCKING, "$realfile.lock")) {
4841 if ($no_lock || !$pid || !kill(0, $pid) || $pid == $$) {
4844 # Create the .lock file
4845 open(LOCKING, ">$realfile.lock") || return 0;
4846 my $lck = eval "flock(LOCKING, 2+4)";
4848 # Lock of lock file failed! Wait till later
4851 print LOCKING $$,"\n";
4852 eval "flock(LOCKING, 8)";
4855 $main::locked_file_list{$realfile} = int($_[1]);
4856 push(@main::temporary_files, "$realfile.lock");
4857 if (($gconfig{'logfiles'} || $gconfig{'logfullfiles'}) &&
4858 !&get_module_variable('$no_log_file_changes') &&
4860 # Grab a copy of this file for later diffing
4862 $main::locked_file_data{$realfile} = undef;
4864 $main::locked_file_type{$realfile} = 1;
4865 $main::locked_file_data{$realfile} = '';
4867 elsif (!$_[2] && ($lnk = readlink($realfile))) {
4868 $main::locked_file_type{$realfile} = 2;
4869 $main::locked_file_data{$realfile} = $lnk;
4871 elsif (open(ORIGFILE, $realfile)) {
4872 $main::locked_file_type{$realfile} = 0;
4873 $main::locked_file_data{$realfile} = '';
4876 $main::locked_file_data{$realfile} .=$_;
4885 if ($lock_tries_count++ > 5*60) {
4886 # Give up after 5 minutes
4887 &error(&text('elock_tries', "<tt>$realfile</tt>", 5));
4893 =head2 unlock_file(filename)
4895 Release a lock on a file taken out by lock_file. If Webmin actions logging of
4896 file changes is enabled, then at unlock file a diff will be taken between the
4897 old and new contents, and stored under /var/webmin/diffs when webmin_log is
4898 called. This can then be viewed in the Webmin Actions Log module.
4903 my $realfile = &translate_filename($_[0]);
4904 return if (!$_[0] || !defined($main::locked_file_list{$realfile}));
4905 unlink("$realfile.lock") if (&can_lock_file($realfile));
4906 delete($main::locked_file_list{$realfile});
4907 if (exists($main::locked_file_data{$realfile})) {
4908 # Diff the new file with the old
4910 my $lnk = readlink($realfile);
4911 my $type = -d _ ? 1 : $lnk ? 2 : 0;
4912 my $oldtype = $main::locked_file_type{$realfile};
4913 my $new = !defined($main::locked_file_data{$realfile});
4914 if ($new && !-e _) {
4915 # file doesn't exist, and never did! do nothing ..
4917 elsif ($new && $type == 1 || !$new && $oldtype == 1) {
4918 # is (or was) a directory ..
4919 if (-d _ && !defined($main::locked_file_data{$realfile})) {
4920 push(@main::locked_file_diff,
4921 { 'type' => 'mkdir', 'object' => $realfile });
4923 elsif (!-d _ && defined($main::locked_file_data{$realfile})) {
4924 push(@main::locked_file_diff,
4925 { 'type' => 'rmdir', 'object' => $realfile });
4928 elsif ($new && $type == 2 || !$new && $oldtype == 2) {
4929 # is (or was) a symlink ..
4930 if ($lnk && !defined($main::locked_file_data{$realfile})) {
4931 push(@main::locked_file_diff,
4932 { 'type' => 'symlink', 'object' => $realfile,
4935 elsif (!$lnk && defined($main::locked_file_data{$realfile})) {
4936 push(@main::locked_file_diff,
4937 { 'type' => 'unsymlink', 'object' => $realfile,
4938 'data' => $main::locked_file_data{$realfile} });
4940 elsif ($lnk ne $main::locked_file_data{$realfile}) {
4941 push(@main::locked_file_diff,
4942 { 'type' => 'resymlink', 'object' => $realfile,
4947 # is a file, or has changed type?!
4948 my ($diff, $delete_file);
4949 my $type = "modify";
4951 open(NEWFILE, ">$realfile");
4956 if (!defined($main::locked_file_data{$realfile})) {
4959 open(ORIGFILE, ">$realfile.webminorig");
4960 print ORIGFILE $main::locked_file_data{$realfile};
4962 $diff = &backquote_command(
4963 "diff ".quotemeta("$realfile.webminorig")." ".
4964 quotemeta($realfile)." 2>/dev/null");
4965 push(@main::locked_file_diff,
4966 { 'type' => $type, 'object' => $realfile,
4967 'data' => $diff } ) if ($diff);
4968 unlink("$realfile.webminorig");
4969 unlink($realfile) if ($delete_file);
4972 if ($gconfig{'logfullfiles'}) {
4973 # Add file details to list of those to fully log
4974 $main::orig_file_data{$realfile} ||=
4975 $main::locked_file_data{$realfile};
4976 $main::orig_file_type{$realfile} ||=
4977 $main::locked_file_type{$realfile};
4980 delete($main::locked_file_data{$realfile});
4981 delete($main::locked_file_type{$realfile});
4985 =head2 test_lock(file)
4987 Returns 1 if some file is currently locked, 0 if not.
4992 my $realfile = &translate_filename($_[0]);
4993 return 0 if (!$_[0]);
4994 return 1 if (defined($main::locked_file_list{$realfile}));
4995 return 0 if (!&can_lock_file($realfile));
4997 if (open(LOCKING, "$realfile.lock")) {
5002 return $pid && kill(0, $pid);
5005 =head2 unlock_all_files
5007 Unlocks all files locked by the current script.
5010 sub unlock_all_files
5012 foreach $f (keys %main::locked_file_list) {
5017 =head2 can_lock_file(file)
5019 Returns 1 if some file should be locked, based on the settings in the
5020 Webmin Configuration module. For internal use by lock_file only.
5025 if (&is_readonly_mode()) {
5026 return 0; # never lock in read-only mode
5028 elsif ($gconfig{'lockmode'} == 0) {
5031 elsif ($gconfig{'lockmode'} == 1) {
5035 # Check if under any of the directories
5037 foreach my $d (split(/\t+/, $gconfig{'lockdirs'})) {
5038 if (&same_file($d, $_[0]) ||
5039 &is_under_directory($d, $_[0])) {
5043 return $gconfig{'lockmode'} == 2 ? $match : !$match;
5047 =head2 webmin_log(action, type, object, ¶ms, [module], [host, script-on-host, client-ip])
5049 Log some action taken by a user. This is typically called at the end of a
5050 script, once all file changes are complete and all commands run. The
5053 =item action - A short code for the action being performed, like 'create'.
5055 =item type - A code for the type of object the action is performed to, like 'user'.
5057 =item object - A short name for the object, like 'joe' if the Unix user 'joe' was just created.
5059 =item params - A hash ref of additional information about the action.
5061 =item module - Name of the module in which the action was performed, which defaults to the current module.
5063 =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.
5065 =item script-on-host - Script name like create_user.cgi on the host the action was performed on.
5067 =item client-ip - IP address of the browser that performed the action.
5072 return if (!$gconfig{'log'} || &is_readonly_mode());
5073 my $m = $_[4] ? $_[4] : &get_module_name();
5075 if ($gconfig{'logclear'}) {
5076 # check if it is time to clear the log
5077 my @st = stat("$webmin_logfile.time");
5078 my $write_logtime = 0;
5080 if ($st[9]+$gconfig{'logtime'}*60*60 < time()) {
5081 # clear logfile and all diff files
5082 &unlink_file("$ENV{'WEBMIN_VAR'}/diffs");
5083 &unlink_file("$ENV{'WEBMIN_VAR'}/files");
5084 &unlink_file("$ENV{'WEBMIN_VAR'}/annotations");
5085 unlink($webmin_logfile);
5092 if ($write_logtime) {
5093 open(LOGTIME, ">$webmin_logfile.time");
5094 print LOGTIME time(),"\n";
5099 # If an action script directory is defined, call the appropriate scripts
5100 if ($gconfig{'action_script_dir'}) {
5101 my ($action, $type, $object) = ($_[0], $_[1], $_[2]);
5102 my ($basedir) = $gconfig{'action_script_dir'};
5104 for my $dir ($basedir/$type/$action, $basedir/$type, $basedir) {
5107 opendir(DIR, $dir) or die "Can't open $dir: $!";
5108 while (defined($file = readdir(DIR))) {
5109 next if ($file =~ /^\.\.?$/); # skip '.' and '..'
5110 if (-x "$dir/$file") {
5111 # Call a script notifying it of the action
5113 $ENV{'ACTION_MODULE'} = &get_module_name();
5114 $ENV{'ACTION_ACTION'} = $_[0];
5115 $ENV{'ACTION_TYPE'} = $_[1];
5116 $ENV{'ACTION_OBJECT'} = $_[2];
5117 $ENV{'ACTION_SCRIPT'} = $script_name;
5118 foreach my $p (keys %param) {
5119 $ENV{'ACTION_PARAM_'.uc($p)} = $param{$p};
5121 system("$dir/$file", @_,
5122 "<$null_file", ">$null_file", "2>&1");
5130 # should logging be done at all?
5131 return if ($gconfig{'logusers'} && &indexof($base_remote_user,
5132 split(/\s+/, $gconfig{'logusers'})) < 0);
5133 return if ($gconfig{'logmodules'} && &indexof($m,
5134 split(/\s+/, $gconfig{'logmodules'})) < 0);
5138 my @tm = localtime($now);
5139 my $script_name = $0 =~ /([^\/]+)$/ ? $1 : '-';
5140 my $id = sprintf "%d.%d.%d", $now, $$, $main::action_id_count;
5141 $main::action_id_count++;
5142 my $line = sprintf "%s [%2.2d/%s/%4.4d %2.2d:%2.2d:%2.2d] %s %s %s %s %s \"%s\" \"%s\" \"%s\"",
5143 $id, $tm[3], $text{"smonth_".($tm[4]+1)}, $tm[5]+1900,
5144 $tm[2], $tm[1], $tm[0],
5145 $remote_user || '-',
5146 $main::session_id || '-',
5147 $_[7] || $ENV{'REMOTE_HOST'} || '-',
5148 $m, $_[5] ? "$_[5]:$_[6]" : $script_name,
5149 $_[0], $_[1] ne '' ? $_[1] : '-', $_[2] ne '' ? $_[2] : '-';
5151 foreach my $k (sort { $a cmp $b } keys %{$_[3]}) {
5152 my $v = $_[3]->{$k};
5158 elsif (ref($v) eq 'ARRAY') {
5162 $vv =~ s/(['"\\\r\n\t\%])/sprintf("%%%2.2X",ord($1))/ge;
5163 $line .= " $k='$vv'";
5167 foreach $vv (split(/\0/, $v)) {
5169 $vv =~ s/(['"\\\r\n\t\%])/sprintf("%%%2.2X",ord($1))/ge;
5170 $line .= " $k='$vv'";
5173 $param{$k} = join(" ", @pv);
5175 open(WEBMINLOG, ">>$webmin_logfile");
5176 print WEBMINLOG $line,"\n";
5178 if ($gconfig{'logperms'}) {
5179 chmod(oct($gconfig{'logperms'}), $webmin_logfile);
5182 chmod(0600, $webmin_logfile);
5185 if ($gconfig{'logfiles'} && !&get_module_variable('$no_log_file_changes')) {
5186 # Find and record the changes made to any locked files, or commands run
5188 mkdir("$ENV{'WEBMIN_VAR'}/diffs", 0700);
5189 foreach my $d (@main::locked_file_diff) {
5190 mkdir("$ENV{'WEBMIN_VAR'}/diffs/$id", 0700);
5191 open(DIFFLOG, ">$ENV{'WEBMIN_VAR'}/diffs/$id/$i");
5192 print DIFFLOG "$d->{'type'} $d->{'object'}\n";
5193 print DIFFLOG $d->{'data'};
5195 if ($d->{'input'}) {
5196 open(DIFFLOG, ">$ENV{'WEBMIN_VAR'}/diffs/$id/$i.input");
5197 print DIFFLOG $d->{'input'};
5200 if ($gconfig{'logperms'}) {
5201 chmod(oct($gconfig{'logperms'}),
5202 "$ENV{'WEBMIN_VAR'}/diffs/$id/$i",
5203 "$ENV{'WEBMIN_VAR'}/diffs/$id/$i.input");
5207 @main::locked_file_diff = undef;
5210 if ($gconfig{'logfullfiles'}) {
5211 # Save the original contents of any modified files
5213 mkdir("$ENV{'WEBMIN_VAR'}/files", 0700);
5214 foreach my $f (keys %main::orig_file_data) {
5215 mkdir("$ENV{'WEBMIN_VAR'}/files/$id", 0700);
5216 open(ORIGLOG, ">$ENV{'WEBMIN_VAR'}/files/$id/$i");
5217 if (!defined($main::orig_file_type{$f})) {
5218 print ORIGLOG -1," ",$f,"\n";
5221 print ORIGLOG $main::orig_file_type{$f}," ",$f,"\n";
5223 print ORIGLOG $main::orig_file_data{$f};
5225 if ($gconfig{'logperms'}) {
5226 chmod(oct($gconfig{'logperms'}),
5227 "$ENV{'WEBMIN_VAR'}/files/$id.$i");
5231 %main::orig_file_data = undef;
5232 %main::orig_file_type = undef;
5235 if ($miniserv::page_capture_out) {
5236 # Save the whole page output
5237 mkdir("$ENV{'WEBMIN_VAR'}/output", 0700);
5238 open(PAGEOUT, ">$ENV{'WEBMIN_VAR'}/output/$id");
5239 print PAGEOUT $miniserv::page_capture_out;
5241 if ($gconfig{'logperms'}) {
5242 chmod(oct($gconfig{'logperms'}),
5243 "$ENV{'WEBMIN_VAR'}/output/$id");
5245 $miniserv::page_capture_out = undef;
5249 if ($gconfig{'logsyslog'}) {
5250 eval 'use Sys::Syslog qw(:DEFAULT setlogsock);
5251 openlog(&get_product_name(), "cons,pid,ndelay", "daemon");
5252 setlogsock("inet");';
5254 # Syslog module is installed .. try to convert to a
5255 # human-readable form
5257 my $mod = &get_module_name();
5258 my $mdir = module_root_directory($mod);
5259 if (-r "$mdir/log_parser.pl") {
5260 &foreign_require($mod, "log_parser.pl");
5262 foreach my $k (keys %{$_[3]}) {
5263 my $v = $_[3]->{$k};
5264 if (ref($v) eq 'ARRAY') {
5265 $params{$k} = join("\0", @$v);
5271 $msg = &foreign_call($mod, "parse_webmin_log",
5272 $remote_user, $script_name,
5273 $_[0], $_[1], $_[2], \%params);
5274 $msg =~ s/<[^>]*>//g; # Remove tags
5276 elsif ($_[0] eq "_config_") {
5277 my %wtext = &load_language("webminlog");
5278 $msg = $wtext{'search_config'};
5280 $msg ||= "$_[0] $_[1] $_[2]";
5281 my %info = &get_module_info($m);
5282 eval { syslog("info", "%s", "[$info{'desc'}] $msg"); };
5287 =head2 additional_log(type, object, data, [input])
5289 Records additional log data for an upcoming call to webmin_log, such
5290 as a command that was run or SQL that was executed. Typically you will never
5291 need to call this function directory.
5296 if ($gconfig{'logfiles'} && !&get_module_variable('$no_log_file_changes')) {
5297 push(@main::locked_file_diff,
5298 { 'type' => $_[0], 'object' => $_[1], 'data' => $_[2],
5299 'input' => $_[3] } );
5303 =head2 webmin_debug_log(type, message)
5305 Write something to the Webmin debug log. For internal use only.
5308 sub webmin_debug_log
5310 my ($type, $msg) = @_;
5311 return 0 if (!$main::opened_debug_log);
5312 return 0 if ($gconfig{'debug_no'.$main::webmin_script_type});
5313 if ($gconfig{'debug_modules'}) {
5314 my @dmods = split(/\s+/, $gconfig{'debug_modules'});
5315 return 0 if (&indexof($main::initial_module_name, @dmods) < 0);
5318 my @tm = localtime($now);
5320 "%s [%2.2d/%s/%4.4d %2.2d:%2.2d:%2.2d] %s %s %s %s \"%s\"",
5321 $$, $tm[3], $text{"smonth_".($tm[4]+1)}, $tm[5]+1900,
5322 $tm[2], $tm[1], $tm[0],
5323 $remote_user || "-",
5324 $ENV{'REMOTE_HOST'} || "-",
5325 &get_module_name() || "-",
5328 seek(main::DEBUGLOG, 0, 2);
5329 print main::DEBUGLOG $line."\n";
5333 =head2 system_logged(command)
5335 Just calls the Perl system() function, but also logs the command run.
5340 if (&is_readonly_mode()) {
5341 print STDERR "Vetoing command $_[0]\n";
5344 my @realcmd = ( &translate_command($_[0]), @_[1..$#_] );
5345 my $cmd = join(" ", @realcmd);
5347 if ($cmd =~ s/(\s*&\s*)$//) {
5350 while($cmd =~ s/(\d*)(<|>)((\/(tmp|dev)\S+)|&\d+)\s*$//) { }
5351 $cmd =~ s/^\((.*)\)\s*$/$1/;
5353 &additional_log('exec', undef, $cmd);
5354 return system(@realcmd);
5357 =head2 backquote_logged(command)
5359 Executes a command and returns the output (like `command`), but also logs it.
5362 sub backquote_logged
5364 if (&is_readonly_mode()) {
5366 print STDERR "Vetoing command $_[0]\n";
5369 my $realcmd = &translate_command($_[0]);
5372 if ($cmd =~ s/(\s*&\s*)$//) {
5375 while($cmd =~ s/(\d*)(<|>)((\/(tmp\/.webmin|dev)\S+)|&\d+)\s*$//) { }
5376 $cmd =~ s/^\((.*)\)\s*$/$1/;
5378 &additional_log('exec', undef, $cmd);
5379 &webmin_debug_log('CMD', "cmd=$cmd") if ($gconfig{'debug_what_cmd'});
5383 =head2 backquote_with_timeout(command, timeout, safe?, [maxlines])
5385 Runs some command, waiting at most the given number of seconds for it to
5386 complete, and returns the output. The maxlines parameter sets the number
5387 of lines of output to capture. The safe parameter should be set to 1 if the
5388 command is safe for read-only mode users to run.
5391 sub backquote_with_timeout
5393 my $realcmd = &translate_command($_[0]);
5394 &webmin_debug_log('CMD', "cmd=$realcmd timeout=$_[1]")
5395 if ($gconfig{'debug_what_cmd'});
5397 my $pid = &open_execute_command(OUT, "($realcmd) <$null_file", 1, $_[2]);
5402 my $elapsed = time() - $start;
5403 last if ($elapsed > $_[1]);
5405 vec($rmask, fileno(OUT), 1) = 1;
5406 my $sel = select($rmask, undef, undef, $_[1] - $elapsed);
5407 last if (!$sel || $sel < 0);
5409 last if (!defined($line));
5412 if ($_[3] && $linecount >= $_[3]) {
5417 if (kill('TERM', $pid) && time() - $start >= $_[1]) {
5421 return wantarray ? ($out, $timed_out) : $out;
5424 =head2 backquote_command(command, safe?)
5426 Executes a command and returns the output (like `command`), subject to
5427 command translation. The safe parameter should be set to 1 if the command
5428 is safe for read-only mode users to run.
5431 sub backquote_command
5433 if (&is_readonly_mode() && !$_[1]) {
5434 print STDERR "Vetoing command $_[0]\n";
5438 my $realcmd = &translate_command($_[0]);
5439 &webmin_debug_log('CMD', "cmd=$realcmd") if ($gconfig{'debug_what_cmd'});
5443 =head2 kill_logged(signal, pid, ...)
5445 Like Perl's built-in kill function, but also logs the fact that some process
5446 was killed. On Windows, falls back to calling process.exe to terminate a
5452 return scalar(@_)-1 if (&is_readonly_mode());
5453 &webmin_debug_log('KILL', "signal=$_[0] pids=".join(" ", @_[1..@_-1]))
5454 if ($gconfig{'debug_what_procs'});
5455 &additional_log('kill', $_[0], join(" ", @_[1..@_-1])) if (@_ > 1);
5456 if ($gconfig{'os_type'} eq 'windows') {
5457 # Emulate some kills with process.exe
5458 my $arg = $_[0] eq "KILL" ? "-k" :
5459 $_[0] eq "TERM" ? "-q" :
5460 $_[0] eq "STOP" ? "-s" :
5461 $_[0] eq "CONT" ? "-r" : undef;
5463 foreach my $p (@_[1..@_-1]) {
5465 $ok ||= kill($_[0], $p);
5468 &execute_command("process $arg $p");
5480 =head2 rename_logged(old, new)
5482 Re-names a file and logs the rename. If the old and new files are on different
5483 filesystems, calls mv or the Windows rename function to do the job.
5488 &additional_log('rename', $_[0], $_[1]) if ($_[0] ne $_[1]);
5489 return &rename_file($_[0], $_[1]);
5492 =head2 rename_file(old, new)
5494 Renames a file or directory. If the old and new files are on different
5495 filesystems, calls mv or the Windows rename function to do the job.
5500 if (&is_readonly_mode()) {
5501 print STDERR "Vetoing rename from $_[0] to $_[1]\n";
5504 my $src = &translate_filename($_[0]);
5505 my $dst = &translate_filename($_[1]);
5506 &webmin_debug_log('RENAME', "src=$src dst=$dst")
5507 if ($gconfig{'debug_what_ops'});
5508 my $ok = rename($src, $dst);
5509 if (!$ok && $! !~ /permission/i) {
5510 # Try the mv command, in case this is a cross-filesystem rename
5511 if ($gconfig{'os_type'} eq 'windows') {
5512 # Need to use rename
5513 my $out = &backquote_command("rename ".quotemeta($_[0]).
5514 " ".quotemeta($_[1])." 2>&1");
5516 $! = $out if (!$ok);
5520 my $out = &backquote_command("mv ".quotemeta($_[0]).
5521 " ".quotemeta($_[1])." 2>&1");
5523 $! = $out if (!$ok);
5529 =head2 symlink_logged(src, dest)
5531 Create a symlink, and logs it. Effectively does the same thing as the Perl
5538 my $rv = &symlink_file($_[0], $_[1]);
5539 &unlock_file($_[1]);
5543 =head2 symlink_file(src, dest)
5545 Creates a soft link, unless in read-only mode. Effectively does the same thing
5546 as the Perl symlink function.
5551 if (&is_readonly_mode()) {
5552 print STDERR "Vetoing symlink from $_[0] to $_[1]\n";
5555 my $src = &translate_filename($_[0]);
5556 my $dst = &translate_filename($_[1]);
5557 &webmin_debug_log('SYMLINK', "src=$src dst=$dst")
5558 if ($gconfig{'debug_what_ops'});
5559 return symlink($src, $dst);
5562 =head2 link_file(src, dest)
5564 Creates a hard link, unless in read-only mode. The existing new link file
5565 will be deleted if necessary. Effectively the same as Perl's link function.
5570 if (&is_readonly_mode()) {
5571 print STDERR "Vetoing link from $_[0] to $_[1]\n";
5574 my $src = &translate_filename($_[0]);
5575 my $dst = &translate_filename($_[1]);
5576 &webmin_debug_log('LINK', "src=$src dst=$dst")
5577 if ($gconfig{'debug_what_ops'});
5578 unlink($dst); # make sure link works
5579 return link($src, $dst);
5582 =head2 make_dir(dir, perms, recursive)
5584 Creates a directory and sets permissions on it, unless in read-only mode.
5585 The perms parameter sets the octal permissions to apply, which unlike Perl's
5586 mkdir will really get set. The recursive flag can be set to 1 to have the
5587 function create parent directories too.
5592 my ($dir, $perms, $recur) = @_;
5593 if (&is_readonly_mode()) {
5594 print STDERR "Vetoing directory $dir\n";
5597 $dir = &translate_filename($dir);
5598 my $exists = -d $dir ? 1 : 0;
5599 return 1 if ($exists && $recur); # already exists
5600 &webmin_debug_log('MKDIR', $dir) if ($gconfig{'debug_what_ops'});
5601 my $rv = mkdir($dir, $perms);
5602 if (!$rv && $recur) {
5603 # Failed .. try mkdir -p
5604 my $param = $gconfig{'os_type'} eq 'windows' ? "" : "-p";
5605 my $ex = &execute_command("mkdir $param "."e_path($dir));
5611 chmod($perms, $dir);
5616 =head2 set_ownership_permissions(user, group, perms, file, ...)
5618 Sets the user, group owner and permissions on some files. The parameters are :
5620 =item user - UID or username to change the file owner to. If undef, then the owner is not changed.
5622 =item group - GID or group name to change the file group to. If undef, then the group is set to the user's primary group.
5624 =item perms - Octal permissions set to set on the file. If undef, they are left alone.
5626 =item file - One or more files or directories to modify.
5629 sub set_ownership_permissions
5631 my ($user, $group, $perms, @files) = @_;
5632 if (&is_readonly_mode()) {
5633 print STDERR "Vetoing permission changes on ",join(" ", @files),"\n";
5636 @files = map { &translate_filename($_) } @files;
5637 if ($gconfig{'debug_what_ops'}) {
5638 foreach my $f (@files) {
5639 &webmin_debug_log('PERMS',
5640 "file=$f user=$user group=$group perms=$perms");
5644 if (defined($user)) {
5645 my $uid = $user !~ /^\d+$/ ? getpwnam($user) : $user;
5647 if (defined($group)) {
5648 $gid = $group !~ /^\d+$/ ? getgrnam($group) : $group;
5651 my @uinfo = getpwuid($uid);
5654 $rv = chown($uid, $gid, @files);
5656 if ($rv && defined($perms)) {
5657 $rv = chmod($perms, @files);
5662 =head2 unlink_logged(file, ...)
5664 Like Perl's unlink function, but locks the files beforehand and un-locks them
5665 after so that the deletion is logged by Webmin.
5671 foreach my $f (@_) {
5672 if (!&test_lock($f)) {
5677 my @rv = &unlink_file(@_);
5678 foreach my $f (@_) {
5683 return wantarray ? @rv : $rv[0];
5686 =head2 unlink_file(file, ...)
5688 Deletes some files or directories. Like Perl's unlink function, but also
5689 recursively deletes directories with the rm command if needed.
5694 return 1 if (&is_readonly_mode());
5697 foreach my $f (@_) {
5698 &unflush_file_lines($f);
5699 my $realf = &translate_filename($f);
5700 &webmin_debug_log('UNLINK', $realf) if ($gconfig{'debug_what_ops'});
5702 if (!rmdir($realf)) {
5704 if ($gconfig{'os_type'} eq 'windows') {
5705 # Call del and rmdir commands
5708 my $out = `del /q "$qm" 2>&1`;
5710 $out = `rmdir "$qm" 2>&1`;
5715 my $qm = quotemeta($realf);
5716 $out = `rm -rf $qm 2>&1`;
5725 if (!unlink($realf)) {
5731 return wantarray ? ($rv, $err) : $rv;
5734 =head2 copy_source_dest(source, dest)
5736 Copy some file or directory to a new location. Returns 1 on success, or 0
5737 on failure - also sets $! on failure. If the source is a directory, uses
5738 piped tar commands to copy a whole directory structure including permissions
5742 sub copy_source_dest
5744 return (1, undef) if (&is_readonly_mode());
5745 my ($src, $dst) = @_;
5748 &webmin_debug_log('COPY', "src=$src dst=$dst")
5749 if ($gconfig{'debug_what_ops'});
5750 if ($gconfig{'os_type'} eq 'windows') {
5751 # No tar or cp on windows, so need to use copy command
5755 $out = &backquote_logged("xcopy \"$src\" \"$dst\" /Y /E /I 2>&1");
5758 $out = &backquote_logged("copy /Y \"$src\" \"$dst\" 2>&1");
5766 # A directory .. need to copy with tar command
5767 my @st = stat($src);
5770 &set_ownership_permissions($st[4], $st[5], $st[2], $dst);
5771 $out = &backquote_logged("(cd ".quotemeta($src)." ; tar cf - . | (cd ".quotemeta($dst)." ; tar xf -)) 2>&1");
5778 # Can just copy with cp
5779 my $out = &backquote_logged("cp -p ".quotemeta($src).
5780 " ".quotemeta($dst)." 2>&1");
5786 return wantarray ? ($ok, $err) : $ok;
5789 =head2 remote_session_name(host|&server)
5791 Generates a session ID for some server. For this server, this will always
5792 be an empty string. For a server object it will include the hostname and
5793 port and PID. For a server name, it will include the hostname and PID. For
5797 sub remote_session_name
5799 return ref($_[0]) && $_[0]->{'host'} && $_[0]->{'port'} ?
5800 "$_[0]->{'host'}:$_[0]->{'port'}.$$" :
5801 $_[0] eq "" || ref($_[0]) && $_[0]->{'id'} == 0 ? "" :
5802 ref($_[0]) ? "" : "$_[0].$$";
5805 =head2 remote_foreign_require(server, module, file)
5807 Connects to rpc.cgi on a remote webmin server and have it open a session
5808 to a process that will actually do the require and run functions. This is the
5809 equivalent for foreign_require, but for a remote Webmin system. The server
5810 parameter can either be a hostname of a system registered in the Webmin
5811 Servers Index module, or a hash reference for a system from that module.
5814 sub remote_foreign_require
5816 my $call = { 'action' => 'require',
5819 my $sn = &remote_session_name($_[0]);
5820 if ($remote_session{$sn}) {
5821 $call->{'session'} = $remote_session{$sn};
5824 $call->{'newsession'} = 1;
5826 my $rv = &remote_rpc_call($_[0], $call);
5827 if ($rv->{'session'}) {
5828 $remote_session{$sn} = $rv->{'session'};
5829 $remote_session_server{$sn} = $_[0];
5833 =head2 remote_foreign_call(server, module, function, [arg]*)
5835 Call a function on a remote server. Must have been setup first with
5836 remote_foreign_require for the same server and module. Equivalent to
5837 foreign_call, but with the extra server parameter to specify the remote
5841 sub remote_foreign_call
5843 return undef if (&is_readonly_mode());
5844 my $sn = &remote_session_name($_[0]);
5845 return &remote_rpc_call($_[0], { 'action' => 'call',
5848 'session' => $remote_session{$sn},
5849 'args' => [ @_[3 .. $#_] ] } );
5852 =head2 remote_foreign_check(server, module, [api-only])
5854 Checks if some module is installed and supported on a remote server. Equivilant
5855 to foreign_check, but for the remote Webmin system specified by the server
5859 sub remote_foreign_check
5861 return &remote_rpc_call($_[0], { 'action' => 'check',
5866 =head2 remote_foreign_config(server, module)
5868 Gets the configuration for some module from a remote server, as a hash.
5869 Equivalent to foreign_config, but for a remote system.
5872 sub remote_foreign_config
5874 return &remote_rpc_call($_[0], { 'action' => 'config',
5875 'module' => $_[1] });
5878 =head2 remote_eval(server, module, code)
5880 Evaluates some perl code in the context of a module on a remote webmin server.
5881 The server parameter must be the hostname of a remote system, module must
5882 be a module directory name, and code a string of Perl code to run. This can
5883 only be called after remote_foreign_require for the same server and module.
5888 return undef if (&is_readonly_mode());
5889 my $sn = &remote_session_name($_[0]);
5890 return &remote_rpc_call($_[0], { 'action' => 'eval',
5893 'session' => $remote_session{$sn} });
5896 =head2 remote_write(server, localfile, [remotefile], [remotebasename])
5898 Transfers some local file to another server via Webmin's RPC protocol, and
5899 returns the resulting remote filename. If the remotefile parameter is given,
5900 that is the destination filename which will be used. Otherwise a randomly
5901 selected temporary filename will be used, and returned by the function.
5906 return undef if (&is_readonly_mode());
5908 my $sn = &remote_session_name($_[0]);
5909 if (!$_[0] || $remote_server_version{$sn} >= 0.966) {
5910 # Copy data over TCP connection
5911 my $rv = &remote_rpc_call($_[0], { 'action' => 'tcpwrite',
5913 'name' => $_[3] } );
5915 my $serv = ref($_[0]) ? $_[0]->{'host'} : $_[0];
5916 &open_socket($serv || "localhost", $rv->[1], TWRITE, \$error);
5917 return &$main::remote_error_handler("Failed to transfer file : $error")
5920 while(read(FILE, $got, 1024) > 0) {
5924 shutdown(TWRITE, 1);
5926 if ($error && $error !~ /^OK/) {
5927 # Got back an error!
5928 return &$main::remote_error_handler("Failed to transfer file : $error");
5934 # Just pass file contents as parameters
5936 while(read(FILE, $got, 1024) > 0) {
5940 return &remote_rpc_call($_[0], { 'action' => 'write',
5943 'session' => $remote_session{$sn} });
5947 =head2 remote_read(server, localfile, remotefile)
5949 Transfers a file from a remote server to this system, using Webmin's RPC
5950 protocol. The server parameter must be the hostname of a system registered
5951 in the Webmin Servers Index module, localfile is the destination path on this
5952 system, and remotefile is the file to fetch from the remote server.
5957 my $sn = &remote_session_name($_[0]);
5958 if (!$_[0] || $remote_server_version{$sn} >= 0.966) {
5959 # Copy data over TCP connection
5960 my $rv = &remote_rpc_call($_[0], { 'action' => 'tcpread',
5961 'file' => $_[2] } );
5963 return &$main::remote_error_handler("Failed to transfer file : $rv->[1]");
5966 my $serv = ref($_[0]) ? $_[0]->{'host'} : $_[0];
5967 &open_socket($serv || "localhost", $rv->[1], TREAD, \$error);
5968 return &$main::remote_error_handler("Failed to transfer file : $error")
5971 open(FILE, ">$_[1]");
5972 while(read(TREAD, $got, 1024) > 0) {
5979 # Just get data as return value
5980 my $d = &remote_rpc_call($_[0], { 'action' => 'read',
5982 'session' => $remote_session{$sn} });
5983 open(FILE, ">$_[1]");
5989 =head2 remote_finished
5991 Close all remote sessions. This happens automatically after a while
5992 anyway, but this function should be called to clean things up faster.
5997 foreach my $sn (keys %remote_session) {
5998 my $server = $remote_session_server{$sn};
5999 &remote_rpc_call($server, { 'action' => 'quit',
6000 'session' => $remote_session{$sn} } );
6001 delete($remote_session{$sn});
6002 delete($remote_session_server{$sn});
6004 foreach my $fh (keys %fast_fh_cache) {
6006 delete($fast_fh_cache{$fh});
6010 =head2 remote_error_setup(&function)
6012 Sets a function to be called instead of &error when a remote RPC operation
6013 fails. Useful if you want to have more control over your remote operations.
6016 sub remote_error_setup
6018 $main::remote_error_handler = $_[0] || \&error;
6021 =head2 remote_rpc_call(server, &structure)
6023 Calls rpc.cgi on some server and passes it a perl structure (hash,array,etc)
6024 and then reads back a reply structure. This is mainly for internal use only,
6025 and is called by the other remote_* functions.
6031 my $sn = &remote_session_name($_[0]); # Will be undef for local connection
6033 # Server structure was given
6035 $serv->{'user'} || $serv->{'id'} == 0 ||
6036 return &$main::remote_error_handler(
6037 "No Webmin login set for server");
6040 # lookup the server in the webmin servers module if needed
6041 if (!%main::remote_servers_cache) {
6042 &foreign_require("servers", "servers-lib.pl");
6043 foreach $s (&foreign_call("servers", "list_servers")) {
6044 $main::remote_servers_cache{$s->{'host'}} = $s;
6045 $main::remote_servers_cache{$s->{'host'}.":".$s->{'port'}} = $s;
6048 $serv = $main::remote_servers_cache{$_[0]};
6049 $serv || return &$main::remote_error_handler(
6050 "No Webmin Servers entry for $_[0]");
6051 $serv->{'user'} || return &$main::remote_error_handler(
6052 "No login set for server $_[0]");
6054 my $ip = $serv->{'ip'} || $serv->{'host'};
6056 # Work out the username and password
6058 if ($serv->{'sameuser'}) {
6059 $user = $remote_user;
6060 defined($main::remote_pass) || return &$main::remote_error_handler(
6061 "Password for this server is not available");
6062 $pass = $main::remote_pass;
6065 $user = $serv->{'user'};
6066 $pass = $serv->{'pass'};
6069 if ($serv->{'fast'} || !$sn) {
6070 # Make TCP connection call to fastrpc.cgi
6071 if (!$fast_fh_cache{$sn} && $sn) {
6072 # Need to open the connection
6073 my $con = &make_http_connection(
6074 $ip, $serv->{'port'}, $serv->{'ssl'},
6075 "POST", "/fastrpc.cgi");
6076 return &$main::remote_error_handler(
6077 "Failed to connect to $serv->{'host'} : $con")
6079 &write_http_connection($con, "Host: $serv->{'host'}\r\n");
6080 &write_http_connection($con, "User-agent: Webmin\r\n");
6081 my $auth = &encode_base64("$user:$pass");
6083 &write_http_connection($con, "Authorization: basic $auth\r\n");
6084 &write_http_connection($con, "Content-length: ",
6085 length($tostr),"\r\n");
6086 &write_http_connection($con, "\r\n");
6087 &write_http_connection($con, $tostr);
6089 # read back the response
6090 my $line = &read_http_connection($con);
6091 $line =~ tr/\r\n//d;
6092 if ($line =~ /^HTTP\/1\..\s+401\s+/) {
6093 return &$main::remote_error_handler("Login to RPC server as $user rejected");
6095 $line =~ /^HTTP\/1\..\s+200\s+/ ||
6096 return &$main::remote_error_handler("HTTP error : $line");
6098 $line = &read_http_connection($con);
6099 $line =~ tr/\r\n//d;
6101 $line = &read_http_connection($con);
6102 if ($line =~ /^0\s+(.*)/) {
6103 return &$main::remote_error_handler("RPC error : $1");
6105 elsif ($line =~ /^1\s+(\S+)\s+(\S+)\s+(\S+)/ ||
6106 $line =~ /^1\s+(\S+)\s+(\S+)/) {
6107 # Started ok .. connect and save SID
6108 &close_http_connection($con);
6109 my ($port, $sid, $version, $error) = ($1, $2, $3);
6110 &open_socket($ip, $port, $sid, \$error);
6111 return &$main::remote_error_handler("Failed to connect to fastrpc.cgi : $error")
6113 $fast_fh_cache{$sn} = $sid;
6114 $remote_server_version{$sn} = $version;
6117 while($stuff = &read_http_connection($con)) {
6120 return &$main::remote_error_handler("Bad response from fastrpc.cgi : $line");
6123 elsif (!$fast_fh_cache{$sn}) {
6124 # Open the connection by running fastrpc.cgi locally
6125 pipe(RPCOUTr, RPCOUTw);
6129 open(STDOUT, ">&RPCOUTw");
6133 $ENV{'REQUEST_METHOD'} = 'GET';
6134 $ENV{'SCRIPT_NAME'} = '/fastrpc.cgi';
6135 $ENV{'SERVER_ROOT'} ||= $root_directory;
6137 if ($base_remote_user ne 'root' &&
6138 $base_remote_user ne 'admin') {
6139 # Need to fake up a login for the CGI!
6140 &read_acl(undef, \%acl, [ 'root' ]);
6141 $ENV{'BASE_REMOTE_USER'} =
6142 $ENV{'REMOTE_USER'} =
6143 $acl{'root'} ? 'root' : 'admin';
6145 delete($ENV{'FOREIGN_MODULE_NAME'});
6146 delete($ENV{'FOREIGN_ROOT_DIRECTORY'});
6147 chdir($root_directory);
6148 if (!exec("$root_directory/fastrpc.cgi")) {
6149 print "exec failed : $!\n";
6156 ($line = <RPCOUTr>) =~ tr/\r\n//d;
6160 if ($line =~ /^0\s+(.*)/) {
6161 return &$main::remote_error_handler("RPC error : $2");
6163 elsif ($line =~ /^1\s+(\S+)\s+(\S+)/) {
6164 # Started ok .. connect and save SID
6166 my ($port, $sid, $error) = ($1, $2, undef);
6167 &open_socket("localhost", $port, $sid, \$error);
6168 return &$main::remote_error_handler("Failed to connect to fastrpc.cgi : $error") if ($error);
6169 $fast_fh_cache{$sn} = $sid;
6176 &error("Bad response from fastrpc.cgi : $line");
6179 # Got a connection .. send off the request
6180 my $fh = $fast_fh_cache{$sn};
6181 my $tostr = &serialise_variable($_[1]);
6182 print $fh length($tostr)," $fh\n";
6184 my $rlen = int(<$fh>);
6185 my ($fromstr, $got);
6186 while(length($fromstr) < $rlen) {
6187 return &$main::remote_error_handler("Failed to read from fastrpc.cgi")
6188 if (read($fh, $got, $rlen - length($fromstr)) <= 0);
6191 my $from = &unserialise_variable($fromstr);
6193 return &$main::remote_error_handler("Remote Webmin error");
6195 if (defined($from->{'arv'})) {
6196 return @{$from->{'arv'}};
6199 return $from->{'rv'};
6203 # Call rpc.cgi on remote server
6204 my $tostr = &serialise_variable($_[1]);
6206 my $con = &make_http_connection($ip, $serv->{'port'},
6207 $serv->{'ssl'}, "POST", "/rpc.cgi");
6208 return &$main::remote_error_handler("Failed to connect to $serv->{'host'} : $con") if (!ref($con));
6210 &write_http_connection($con, "Host: $serv->{'host'}\r\n");
6211 &write_http_connection($con, "User-agent: Webmin\r\n");
6212 my $auth = &encode_base64("$user:$pass");
6214 &write_http_connection($con, "Authorization: basic $auth\r\n");
6215 &write_http_connection($con, "Content-length: ",length($tostr),"\r\n");
6216 &write_http_connection($con, "\r\n");
6217 &write_http_connection($con, $tostr);
6219 # read back the response
6220 my $line = &read_http_connection($con);
6221 $line =~ tr/\r\n//d;
6222 if ($line =~ /^HTTP\/1\..\s+401\s+/) {
6223 return &$main::remote_error_handler("Login to RPC server as $user rejected");
6225 $line =~ /^HTTP\/1\..\s+200\s+/ || return &$main::remote_error_handler("RPC HTTP error : $line");
6227 $line = &read_http_connection($con);
6228 $line =~ tr/\r\n//d;
6231 while($line = &read_http_connection($con)) {
6235 my $from = &unserialise_variable($fromstr);
6236 return &$main::remote_error_handler("Invalid RPC login to $serv->{'host'}") if (!$from->{'status'});
6237 if (defined($from->{'arv'})) {
6238 return @{$from->{'arv'}};
6241 return $from->{'rv'};
6246 =head2 remote_multi_callback(&servers, parallel, &function, arg|&args, &returns, &errors, [module, library])
6248 Executes some function in parallel on multiple servers at once. Fills in
6249 the returns and errors arrays respectively. If the module and library
6250 parameters are given, that module is remotely required on the server first,
6251 to check if it is connectable. The parameters are :
6253 =item servers - A list of Webmin system hash references.
6255 =item parallel - Number of parallel operations to perform.
6257 =item function - Reference to function to call for each system.
6259 =item args - Additional parameters to the function.
6261 =item returns - Array ref to place return values into, in same order as servers.
6263 =item errors - Array ref to place error messages into.
6265 =item module - Optional module to require on the remote system first.
6267 =item library - Optional library to require in the module.
6270 sub remote_multi_callback
6272 my ($servs, $parallel, $func, $args, $rets, $errs, $mod, $lib) = @_;
6273 &remote_error_setup(\&remote_multi_callback_error);
6275 # Call the functions
6277 foreach my $g (@$servs) {
6283 $remote_multi_callback_err = undef;
6285 # Require the remote lib
6286 &remote_foreign_require($g->{'host'}, $mod, $lib);
6287 if ($remote_multi_callback_err) {
6288 # Failed .. return error
6289 print $wh &serialise_variable(
6290 [ undef, $remote_multi_callback_err ]);
6296 my $a = ref($args) ? $args->[$p] : $args;
6297 my $rv = &$func($g, $a);
6300 print $wh &serialise_variable(
6301 [ $rv, $remote_multi_callback_err ]);
6309 # Read back the results
6311 foreach my $g (@$servs) {
6315 $errs->[$p] = "Failed to read response from $g->{'host'}";
6318 my $rv = &unserialise_variable($line);
6320 $rets->[$p] = $rv->[0];
6321 $errs->[$p] = $rv->[1];
6326 &remote_error_setup(undef);
6329 sub remote_multi_callback_error
6331 $remote_multi_callback_err = $_[0];
6334 =head2 serialise_variable(variable)
6336 Converts some variable (maybe a scalar, hash ref, array ref or scalar ref)
6337 into a url-encoded string. In the cases of arrays and hashes, it is recursively
6338 called on each member to serialize the entire object.
6341 sub serialise_variable
6343 if (!defined($_[0])) {
6349 $rv = &urlize($_[0]);
6351 elsif ($r eq 'SCALAR') {
6352 $rv = &urlize(${$_[0]});
6354 elsif ($r eq 'ARRAY') {
6355 $rv = join(",", map { &urlize(&serialise_variable($_)) } @{$_[0]});
6357 elsif ($r eq 'HASH') {
6358 $rv = join(",", map { &urlize(&serialise_variable($_)).",".
6359 &urlize(&serialise_variable($_[0]->{$_})) }
6362 elsif ($r eq 'REF') {
6363 $rv = &serialise_variable(${$_[0]});
6365 elsif ($r eq 'CODE') {
6370 # An object - treat as a hash
6371 $r = "OBJECT ".&urlize($r);
6372 $rv = join(",", map { &urlize(&serialise_variable($_)).",".
6373 &urlize(&serialise_variable($_[0]->{$_})) }
6376 return ($r ? $r : 'VAL').",".$rv;
6379 =head2 unserialise_variable(string)
6381 Converts a string created by serialise_variable() back into the original
6382 scalar, hash ref, array ref or scalar ref. If the original variable was a Perl
6383 object, the same class is used on this system, if available.
6386 sub unserialise_variable
6388 my @v = split(/,/, $_[0]);
6390 if ($v[0] eq 'VAL') {
6391 @v = split(/,/, $_[0], -1);
6392 $rv = &un_urlize($v[1]);
6394 elsif ($v[0] eq 'SCALAR') {
6395 local $r = &un_urlize($v[1]);
6398 elsif ($v[0] eq 'ARRAY') {
6400 for(my $i=1; $i<@v; $i++) {
6401 push(@$rv, &unserialise_variable(&un_urlize($v[$i])));
6404 elsif ($v[0] eq 'HASH') {
6406 for(my $i=1; $i<@v; $i+=2) {
6407 $rv->{&unserialise_variable(&un_urlize($v[$i]))} =
6408 &unserialise_variable(&un_urlize($v[$i+1]));
6411 elsif ($v[0] eq 'REF') {
6412 local $r = &unserialise_variable($v[1]);
6415 elsif ($v[0] eq 'UNDEF') {
6418 elsif ($v[0] =~ /^OBJECT\s+(.*)$/) {
6419 # An object hash that we have to re-bless
6422 for(my $i=1; $i<@v; $i+=2) {
6423 $rv->{&unserialise_variable(&un_urlize($v[$i]))} =
6424 &unserialise_variable(&un_urlize($v[$i+1]));
6432 =head2 other_groups(user)
6434 Returns a list of secondary groups a user is a member of, as a list of
6443 while(my @g = getgrent()) {
6444 my @m = split(/\s+/, $g[3]);
6445 push(@rv, $g[2]) if (&indexof($user, @m) >= 0);
6447 endgrent() if ($gconfig{'os_type'} ne 'hpux');
6451 =head2 date_chooser_button(dayfield, monthfield, yearfield)
6453 Returns HTML for a button that pops up a data chooser window. The parameters
6456 =item dayfield - Name of the text field to place the day of the month into.
6458 =item monthfield - Name of the select field to select the month of the year in, indexed from 1.
6460 =item yearfield - Name of the text field to place the year into.
6463 sub date_chooser_button
6465 return &theme_date_chooser_button(@_)
6466 if (defined(&theme_date_chooser_button));
6467 my ($w, $h) = (250, 225);
6468 if ($gconfig{'db_sizedate'}) {
6469 ($w, $h) = split(/x/, $gconfig{'db_sizedate'});
6471 return "<input type=button onClick='window.dfield = form.$_[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";
6474 =head2 help_file(module, file)
6476 Returns the path to a module's help file of some name, typically under the
6477 help directory with a .html extension.
6482 my $mdir = &module_root_directory($_[0]);
6483 my $dir = "$mdir/help";
6484 foreach my $o (@lang_order_list) {
6485 my $lang = "$dir/$_[1].$o.html";
6486 return $lang if (-r $lang);
6488 return "$dir/$_[1].html";
6493 Seeds the random number generator, if not already done in this script. On Linux
6494 this makes use of the current time, process ID and a read from /dev/urandom.
6495 On other systems, only the current time and process ID are used.
6500 if (!$main::done_seed_random) {
6501 if (open(RANDOM, "/dev/urandom")) {
6503 read(RANDOM, $buf, 4);
6505 srand(time() ^ $$ ^ $buf);
6510 $main::done_seed_random = 1;
6514 =head2 disk_usage_kb(directory)
6516 Returns the number of kB used by some directory and all subdirs. Implemented
6517 by calling the C<du -k> command.
6522 my $dir = &translate_filename($_[0]);
6524 my $ex = &execute_command("du -sk ".quotemeta($dir), undef, \$out, undef, 0, 1);
6526 &execute_command("du -s ".quotemeta($dir), undef, \$out, undef, 0, 1);
6528 return $out =~ /^([0-9]+)/ ? $1 : "???";
6531 =head2 recursive_disk_usage(directory, [skip-regexp], [only-regexp])
6533 Returns the number of bytes taken up by all files in some directory and all
6534 sub-directories, by summing up their lengths. The disk_usage_kb is more
6535 reflective of reality, as the filesystem typically pads file sizes to 1k or
6539 sub recursive_disk_usage
6541 my $dir = &translate_filename($_[0]);
6548 my @st = stat($dir);
6554 my @files = readdir(DIR);
6556 foreach my $f (@files) {
6557 next if ($f eq "." || $f eq "..");
6558 next if ($skip && $f =~ /$skip/);
6559 next if ($only && $f !~ /$only/);
6560 $rv += &recursive_disk_usage("$dir/$f", $skip, $only);
6566 =head2 help_search_link(term, [ section, ... ] )
6568 Returns HTML for a link to the man module for searching local and online
6569 docs for various search terms. The term parameter can either be a single
6570 word like 'bind', or a space-separated list of words. This function is typically
6571 used by modules that want to refer users to additional documentation in man
6572 pages or local system doc files.
6575 sub help_search_link
6577 if (&foreign_available("man") && !$tconfig{'nosearch'}) {
6578 my $for = &urlize(shift(@_));
6579 return "<a href='$gconfig{'webprefix'}/man/search.cgi?".
6580 join("&", map { "section=$_" } @_)."&".
6581 "for=$for&exact=1&check=".&get_module_name()."'>".
6582 $text{'helpsearch'}."</a>\n";
6589 =head2 make_http_connection(host, port, ssl, method, page, [&headers])
6591 Opens a connection to some HTTP server, maybe through a proxy, and returns
6592 a handle object. The handle can then be used to send additional headers
6593 and read back a response. If anything goes wrong, returns an error string.
6594 The parameters are :
6596 =item host - Hostname or IP address of the webserver to connect to.
6598 =item port - HTTP port number to connect to.
6600 =item ssl - Set to 1 to connect in SSL mode.
6602 =item method - HTTP method, like GET or POST.
6604 =item page - Page to request on the webserver, like /foo/index.html
6606 =item headers - Array ref of additional HTTP headers, each of which is a 2-element array ref.
6609 sub make_http_connection
6611 my ($host, $port, $ssl, $method, $page, $headers) = @_;
6614 foreach my $h (@$headers) {
6615 $htxt .= $h->[0].": ".$h->[1]."\r\n";
6619 if (&is_readonly_mode()) {
6620 return "HTTP connections not allowed in readonly mode";
6622 my $rv = { 'fh' => time().$$ };
6625 eval "use Net::SSLeay";
6626 $@ && return $text{'link_essl'};
6627 eval "Net::SSLeay::SSLeay_add_ssl_algorithms()";
6628 eval "Net::SSLeay::load_error_strings()";
6629 $rv->{'ssl_ctx'} = Net::SSLeay::CTX_new() ||
6630 return "Failed to create SSL context";
6631 $rv->{'ssl_con'} = Net::SSLeay::new($rv->{'ssl_ctx'}) ||
6632 return "Failed to create SSL connection";
6634 if ($gconfig{'http_proxy'} =~ /^http:\/\/(\S+):(\d+)/ &&
6635 !&no_proxy($host)) {
6638 &open_socket($1, $2, $rv->{'fh'}, \$error);
6641 my $fh = $rv->{'fh'};
6642 print $fh "CONNECT $host:$port HTTP/1.0\r\n";
6643 if ($gconfig{'proxy_user'}) {
6644 my $auth = &encode_base64(
6645 "$gconfig{'proxy_user'}:".
6646 "$gconfig{'proxy_pass'}");
6647 $auth =~ tr/\r\n//d;
6648 print $fh "Proxy-Authorization: Basic $auth\r\n";
6652 if ($line =~ /^HTTP(\S+)\s+(\d+)\s+(.*)/) {
6653 return "Proxy error : $3" if ($2 != 200);
6656 return "Proxy error : $line";
6661 elsif (!$gconfig{'proxy_fallback'}) {
6662 # Connection to proxy failed - give up
6669 &open_socket($host, $port, $rv->{'fh'}, \$error);
6670 return $error if ($error);
6672 Net::SSLeay::set_fd($rv->{'ssl_con'}, fileno($rv->{'fh'}));
6673 Net::SSLeay::connect($rv->{'ssl_con'}) ||
6674 return "SSL connect() failed";
6675 my $rtxt = "$method $page HTTP/1.0\r\n".$htxt;
6676 Net::SSLeay::write($rv->{'ssl_con'}, $rtxt);
6679 # Plain HTTP request
6681 if ($gconfig{'http_proxy'} =~ /^http:\/\/(\S+):(\d+)/ &&
6682 !&no_proxy($host)) {
6685 &open_socket($1, $2, $rv->{'fh'}, \$error);
6689 my $fh = $rv->{'fh'};
6690 my $rtxt = $method." ".
6691 "http://$host:$port$page HTTP/1.0\r\n";
6692 if ($gconfig{'proxy_user'}) {
6693 my $auth = &encode_base64(
6694 "$gconfig{'proxy_user'}:".
6695 "$gconfig{'proxy_pass'}");
6696 $auth =~ tr/\r\n//d;
6697 $rtxt .= "Proxy-Authorization: Basic $auth\r\n";
6702 elsif (!$gconfig{'proxy_fallback'}) {
6707 # Connecting directly
6709 &open_socket($host, $port, $rv->{'fh'}, \$error);
6710 return $error if ($error);
6711 my $fh = $rv->{'fh'};
6712 my $rtxt = "$method $page HTTP/1.0\r\n".$htxt;
6719 =head2 read_http_connection(&handle, [bytes])
6721 Reads either one line or up to the specified number of bytes from the handle,
6722 originally supplied by make_http_connection.
6725 sub read_http_connection
6729 if ($h->{'ssl_con'}) {
6732 while(($idx = index($h->{'buffer'}, "\n")) < 0) {
6733 # need to read more..
6734 if (!($more = Net::SSLeay::read($h->{'ssl_con'}))) {
6736 $rv = $h->{'buffer'};
6737 delete($h->{'buffer'});
6740 $h->{'buffer'} .= $more;
6742 $rv = substr($h->{'buffer'}, 0, $idx+1);
6743 $h->{'buffer'} = substr($h->{'buffer'}, $idx+1);
6746 if (length($h->{'buffer'})) {
6747 $rv = $h->{'buffer'};
6748 delete($h->{'buffer'});
6751 $rv = Net::SSLeay::read($h->{'ssl_con'}, $_[1]);
6757 read($h->{'fh'}, $rv, $_[1]) > 0 || return undef;
6760 my $fh = $h->{'fh'};
6764 $rv = undef if ($rv eq "");
6768 =head2 write_http_connection(&handle, [data+])
6770 Writes the given data to the given HTTP connection handle.
6773 sub write_http_connection
6776 my $fh = $h->{'fh'};
6778 if ($h->{'ssl_ctx'}) {
6779 foreach my $s (@_) {
6780 my $ok = Net::SSLeay::write($h->{'ssl_con'}, $s);
6781 $allok = 0 if (!$ok);
6785 my $ok = (print $fh @_);
6786 $allok = 0 if (!$ok);
6791 =head2 close_http_connection(&handle)
6793 Closes a connection to an HTTP server, identified by the given handle.
6796 sub close_http_connection
6802 =head2 clean_environment
6804 Deletes any environment variables inherited from miniserv so that they
6805 won't be passed to programs started by webmin. This is useful when calling
6806 programs that check for CGI-related environment variables and modify their
6807 behaviour, and to avoid passing sensitive variables to un-trusted programs.
6810 sub clean_environment
6812 %UNCLEAN_ENV = %ENV;
6813 foreach my $k (keys %ENV) {
6814 if ($k =~ /^(HTTP|VIRTUALSERVER|QUOTA|USERADMIN)_/) {
6818 foreach my $e ('WEBMIN_CONFIG', 'SERVER_NAME', 'CONTENT_TYPE', 'REQUEST_URI',
6819 'PATH_INFO', 'WEBMIN_VAR', 'REQUEST_METHOD', 'GATEWAY_INTERFACE',
6820 'QUERY_STRING', 'REMOTE_USER', 'SERVER_SOFTWARE', 'SERVER_PROTOCOL',
6821 'REMOTE_HOST', 'SERVER_PORT', 'DOCUMENT_ROOT', 'SERVER_ROOT',
6822 'MINISERV_CONFIG', 'SCRIPT_NAME', 'SERVER_ADMIN', 'CONTENT_LENGTH',
6823 'HTTPS', 'FOREIGN_MODULE_NAME', 'FOREIGN_ROOT_DIRECTORY',
6824 'SCRIPT_FILENAME', 'PATH_TRANSLATED', 'BASE_REMOTE_USER',
6825 'DOCUMENT_REALROOT', 'MINISERV_CONFIG', 'MYSQL_PWD',
6831 =head2 reset_environment
6833 Puts the environment back how it was before clean_environment was callled.
6836 sub reset_environment
6839 foreach my $k (keys %UNCLEAN_ENV) {
6840 $ENV{$k} = $UNCLEAN_ENV{$k};
6842 undef(%UNCLEAN_ENV);
6846 =head2 progress_callback
6848 Never called directly, but useful for passing to &http_download to print
6849 out progress of an HTTP request.
6852 sub progress_callback
6854 if (defined(&theme_progress_callback)) {
6855 # Call the theme override
6856 return &theme_progress_callback(@_);
6860 print $progress_callback_prefix;
6862 $progress_size = $_[1];
6863 $progress_step = int($_[1] / 10);
6864 print &text('progress_size2', $progress_callback_url,
6865 &nice_size($progress_size)),"<br>\n";
6868 print &text('progress_nosize', $progress_callback_url),"<br>\n";
6870 $last_progress_time = $last_progress_size = undef;
6872 elsif ($_[0] == 3) {
6874 my $sp = $progress_callback_prefix.(" " x 5);
6875 if ($progress_size) {
6876 # And we have a size to compare against
6877 my $st = int(($_[1] * 10) / $progress_size);
6878 my $time_now = time();
6879 if ($st != $progress_step ||
6880 $time_now - $last_progress_time > 60) {
6881 # Show progress every 10% or 60 seconds
6882 print $sp,&text('progress_datan', &nice_size($_[1]),
6883 int($_[1]*100/$progress_size)),"<br>\n";
6884 $last_progress_time = $time_now;
6886 $progress_step = $st;
6889 # No total size .. so only show in 100k jumps
6890 if ($_[1] > $last_progress_size+100*1024) {
6891 print $sp,&text('progress_data2n',
6892 &nice_size($_[1])),"<br>\n";
6893 $last_progress_size = $_[1];
6897 elsif ($_[0] == 4) {
6898 # All done downloading
6899 print $progress_callback_prefix,&text('progress_done'),"<br>\n";
6901 elsif ($_[0] == 5) {
6902 # Got new location after redirect
6903 $progress_callback_url = $_[1];
6905 elsif ($_[0] == 6) {
6907 $progress_callback_url = $_[1];
6908 print &text('progress_incache', $progress_callback_url),"<br>\n";
6912 =head2 switch_to_remote_user
6914 Changes the user and group of the current process to that of the unix user
6915 with the same name as the current webmin login, or fails if there is none.
6916 This should be called by Usermin module scripts that only need to run with
6917 limited permissions.
6920 sub switch_to_remote_user
6922 @remote_user_info = $remote_user ? getpwnam($remote_user) :
6924 @remote_user_info || &error(&text('switch_remote_euser', $remote_user));
6925 &create_missing_homedir(\@remote_user_info);
6927 &switch_to_unix_user(\@remote_user_info);
6928 $ENV{'USER'} = $ENV{'LOGNAME'} = $remote_user;
6929 $ENV{'HOME'} = $remote_user_info[7];
6931 # Export global variables to caller
6932 if ($main::export_to_caller) {
6933 my ($callpkg) = caller();
6934 eval "\@${callpkg}::remote_user_info = \@remote_user_info";
6938 =head2 switch_to_unix_user(&user-details)
6940 Switches the current process to the UID and group ID from the given list
6941 of user details, which must be in the format returned by getpwnam.
6944 sub switch_to_unix_user
6947 if (!defined($uinfo->[0])) {
6948 # No username given, so just use given GID
6949 ($(, $)) = ( $uinfo->[3], "$uinfo->[3] $uinfo->[3]" );
6952 # Use all groups from user
6953 ($(, $)) = ( $uinfo->[3],
6954 "$uinfo->[3] ".join(" ", $uinfo->[3],
6955 &other_groups($uinfo->[0])) );
6958 POSIX::setuid($uinfo->[2]);
6960 if ($< != $uinfo->[2] || $> != $uinfo->[2]) {
6961 ($>, $<) = ( $uinfo->[2], $uinfo->[2] );
6965 =head2 eval_as_unix_user(username, &code)
6967 Runs some code fragment with the effective UID and GID switch to that
6968 of the given Unix user, so that file IO takes place with his permissions.
6972 sub eval_as_unix_user
6974 my ($user, $code) = @_;
6975 my @uinfo = getpwnam($user);
6976 if (!scalar(@uinfo)) {
6977 &error("eval_as_unix_user called with invalid user $user");
6979 $) = $uinfo[3]." ".join(" ", $uinfo[3], &other_groups($user));
6983 local $main::error_must_die = 1;
6990 $err =~ s/\s+at\s+(\/\S+)\s+line\s+(\d+)\.?//;
6993 return wantarray ? @rv : $rv[0];
6996 =head2 create_user_config_dirs
6998 Creates per-user config directories and sets $user_config_directory and
6999 $user_module_config_directory to them. Also reads per-user module configs
7000 into %userconfig. This should be called by Usermin module scripts that need
7001 to store per-user preferences or other settings.
7004 sub create_user_config_dirs
7006 return if (!$gconfig{'userconfig'});
7007 my @uinfo = @remote_user_info ? @remote_user_info : getpwnam($remote_user);
7008 return if (!@uinfo || !$uinfo[7]);
7009 &create_missing_homedir(\@uinfo);
7010 $user_config_directory = "$uinfo[7]/$gconfig{'userconfig'}";
7011 if (!-d $user_config_directory) {
7012 mkdir($user_config_directory, 0700) ||
7013 &error("Failed to create $user_config_directory : $!");
7014 if ($< == 0 && $uinfo[2]) {
7015 chown($uinfo[2], $uinfo[3], $user_config_directory);
7018 if (&get_module_name()) {
7019 $user_module_config_directory = $user_config_directory."/".
7021 if (!-d $user_module_config_directory) {
7022 mkdir($user_module_config_directory, 0700) ||
7023 &error("Failed to create $user_module_config_directory : $!");
7024 if ($< == 0 && $uinfo[2]) {
7025 chown($uinfo[2], $uinfo[3], $user_config_directory);
7029 &read_file_cached("$module_root_directory/defaultuconfig",
7031 &read_file_cached("$module_config_directory/uconfig", \%userconfig);
7032 &read_file_cached("$user_module_config_directory/config",
7036 # Export global variables to caller
7037 if ($main::export_to_caller) {
7038 my ($callpkg) = caller();
7039 foreach my $v ('$user_config_directory',
7040 '$user_module_config_directory', '%userconfig') {
7041 my ($vt, $vn) = split('', $v, 2);
7042 eval "${vt}${callpkg}::${vn} = ${vt}${vn}";
7047 =head2 create_missing_homedir(&uinfo)
7049 If auto homedir creation is enabled, create one for this user if needed.
7050 For internal use only.
7053 sub create_missing_homedir
7056 if (!-e $uinfo->[7] && $gconfig{'create_homedir'}) {
7057 # Use has no home dir .. make one
7058 system("mkdir -p ".quotemeta($uinfo->[7]));
7059 chown($uinfo->[2], $uinfo->[3], $uinfo->[7]);
7060 if ($gconfig{'create_homedir_perms'} ne '') {
7061 chmod(oct($gconfig{'create_homedir_perms'}), $uinfo->[7]);
7066 =head2 filter_javascript(text)
7068 Disables all javascript <script>, onClick= and so on tags in the given HTML,
7069 and returns the new HTML. Useful for displaying HTML from an un-trusted source.
7072 sub filter_javascript
7075 $rv =~ s/<\s*script[^>]*>([\000-\377]*?)<\s*\/script\s*>//gi;
7076 $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;
7077 $rv =~ s/(javascript:)/x$1/gi;
7078 $rv =~ s/(vbscript:)/x$1/gi;
7082 =head2 resolve_links(path)
7084 Given a path that may contain symbolic links, returns the real path.
7090 $path =~ s/\/+/\//g;
7091 $path =~ s/\/$// if ($path ne "/");
7092 my @p = split(/\/+/, $path);
7094 for(my $i=0; $i<@p; $i++) {
7095 my $sofar = "/".join("/", @p[0..$i]);
7096 my $lnk = readlink($sofar);
7097 if ($lnk eq $sofar) {
7098 # Link to itself! Cannot do anything more really ..
7101 elsif ($lnk =~ /^\//) {
7102 # Link is absolute..
7103 return &resolve_links($lnk."/".join("/", @p[$i+1 .. $#p]));
7107 return &resolve_links("/".join("/", @p[0..$i-1])."/".$lnk."/".join("/", @p[$i+1 .. $#p]));
7113 =head2 simplify_path(path, bogus)
7115 Given a path, maybe containing elements ".." and "." , convert it to a
7116 clean, absolute form. Returns undef if this is not possible.
7124 my @bits = split(/\/+/, $dir);
7127 foreach my $b (@bits) {
7131 elsif ($b eq "..") {
7133 if (scalar(@fixedbits) == 0) {
7134 # Cannot! Already at root!
7141 push(@fixedbits, $b);
7144 return "/".join('/', @fixedbits);
7147 =head2 same_file(file1, file2)
7149 Returns 1 if two files are actually the same
7154 return 1 if ($_[0] eq $_[1]);
7155 return 0 if ($_[0] !~ /^\// || $_[1] !~ /^\//);
7156 my @stat1 = $stat_cache{$_[0]} ? @{$stat_cache{$_[0]}}
7157 : (@{$stat_cache{$_[0]}} = stat($_[0]));
7158 my @stat2 = $stat_cache{$_[1]} ? @{$stat_cache{$_[1]}}
7159 : (@{$stat_cache{$_[1]}} = stat($_[1]));
7160 return 0 if (!@stat1 || !@stat2);
7161 return $stat1[0] == $stat2[0] && $stat1[1] == $stat2[1];
7164 =head2 flush_webmin_caches
7166 Clears all in-memory and on-disk caches used by Webmin.
7169 sub flush_webmin_caches
7171 undef(%main::read_file_cache);
7172 undef(%main::acl_hash_cache);
7173 undef(%main::acl_array_cache);
7174 undef(%main::has_command_cache);
7175 undef(@main::list_languages_cache);
7176 undef($main::got_list_usermods_cache);
7177 undef(@main::list_usermods_cache);
7178 undef(%main::foreign_installed_cache);
7179 unlink("$config_directory/module.infos.cache");
7180 &get_all_module_infos();
7183 =head2 list_usermods
7185 Returns a list of additional module restrictions. For internal use in
7191 if (!$main::got_list_usermods_cache) {
7192 @main::list_usermods_cache = ( );
7194 open(USERMODS, "$config_directory/usermin.mods");
7196 if (/^([^:]+):(\+|-|):(.*)/) {
7197 push(@main::list_usermods_cache,
7198 [ $1, $2, [ split(/\s+/, $3) ] ]);
7202 $main::got_list_usermods_cache = 1;
7204 return @main::list_usermods_cache;
7207 =head2 available_usermods(&allmods, &usermods)
7209 Returns a list of modules that are available to the given user, based
7210 on usermod additional/subtractions. For internal use by Usermin only.
7213 sub available_usermods
7215 return @{$_[0]} if (!@{$_[1]});
7217 my %mods = map { $_->{'dir'}, 1 } @{$_[0]};
7218 my @uinfo = @remote_user_info;
7219 @uinfo = getpwnam($remote_user) if (!@uinfo);
7220 foreach my $u (@{$_[1]}) {
7222 if ($u->[0] eq "*" || $u->[0] eq $remote_user) {
7225 elsif ($u->[0] =~ /^\@(.*)$/) {
7226 # Check for group membership
7227 my @ginfo = getgrnam($1);
7228 $applies++ if (@ginfo && ($ginfo[2] == $uinfo[3] ||
7229 &indexof($remote_user, split(/\s+/, $ginfo[3])) >= 0));
7231 elsif ($u->[0] =~ /^\//) {
7232 # Check users and groups in file
7234 open(USERFILE, $u->[0]);
7237 if ($_ eq $remote_user) {
7240 elsif (/^\@(.*)$/) {
7241 my @ginfo = getgrnam($1);
7243 if (@ginfo && ($ginfo[2] == $uinfo[3] ||
7244 &indexof($remote_user,
7245 split(/\s+/, $ginfo[3])) >= 0));
7252 if ($u->[1] eq "+") {
7253 map { $mods{$_}++ } @{$u->[2]};
7255 elsif ($u->[1] eq "-") {
7256 map { delete($mods{$_}) } @{$u->[2]};
7260 map { $mods{$_}++ } @{$u->[2]};
7264 return grep { $mods{$_->{'dir'}} } @{$_[0]};
7267 =head2 get_available_module_infos(nocache)
7269 Returns a list of modules available to the current user, based on
7270 operating system support, access control and usermod restrictions. Useful
7271 in themes that need to display a list of modules the user can use.
7272 Each element of the returned array is a hash reference in the same format as
7273 returned by get_module_info.
7276 sub get_available_module_infos
7279 &read_acl(\%acl, \%uacl, [ $base_remote_user ]);
7280 my $risk = $gconfig{'risk_'.$base_remote_user};
7282 foreach my $minfo (&get_all_module_infos($_[0])) {
7283 next if (!&check_os_support($minfo));
7285 # Check module risk level
7286 next if ($risk ne 'high' && $minfo->{'risk'} &&
7287 $minfo->{'risk'} !~ /$risk/);
7291 next if (!$acl{$base_remote_user,$minfo->{'dir'}} &&
7292 !$acl{$base_remote_user,"*"});
7294 next if (&is_readonly_mode() && !$minfo->{'readonly'});
7298 # Check usermod restrictions
7299 my @usermods = &list_usermods();
7300 @rv = sort { $a->{'desc'} cmp $b->{'desc'} }
7301 &available_usermods(\@rv, \@usermods);
7303 # Check RBAC restrictions
7305 foreach my $m (@rv) {
7306 if (&supports_rbac($m->{'dir'}) &&
7307 &use_rbac_module_acl(undef, $m->{'dir'})) {
7308 local $rbacs = &get_rbac_module_acl($remote_user,
7316 # Module or system doesn't support RBAC
7317 push(@rbacrv, $m) if (!$gconfig{'rbacdeny_'.$base_remote_user});
7323 if (defined(&theme_foreign_available)) {
7324 foreach my $m (@rbacrv) {
7325 if (&theme_foreign_available($m->{'dir'})) {
7334 # Check licence module vetos
7336 if ($main::licence_module) {
7337 foreach my $m (@themerv) {
7338 if (&foreign_call($main::licence_module,
7339 "check_module_licence", $m->{'dir'})) {
7351 =head2 get_visible_module_infos(nocache)
7353 Like get_available_module_infos, but excludes hidden modules from the list.
7354 Each element of the returned array is a hash reference in the same format as
7355 returned by get_module_info.
7358 sub get_visible_module_infos
7361 my $pn = &get_product_name();
7362 return grep { !$_->{'hidden'} &&
7363 !$_->{$pn.'_hidden'} } &get_available_module_infos($nocache);
7366 =head2 get_visible_modules_categories(nocache)
7368 Returns a list of Webmin module categories, each of which is a hash ref
7369 with 'code', 'desc' and 'modules' keys. The modules value is an array ref
7370 of modules in the category, in the format returned by get_module_info.
7371 Un-used modules are automatically assigned to the 'unused' category, and
7372 those with no category are put into 'others'.
7375 sub get_visible_modules_categories
7378 my @mods = &get_visible_module_infos($nocache);
7380 if (&get_product_name() eq 'webmin') {
7381 @unmods = grep { $_->{'installed'} eq '0' } @mods;
7382 @mods = grep { $_->{'installed'} ne '0' } @mods;
7384 my %cats = &list_categories(\@mods);
7386 foreach my $c (keys %cats) {
7387 my $cat = { 'code' => $c || 'other',
7388 'desc' => $cats{$c} };
7389 $cat->{'modules'} = [ grep { $_->{'category'} eq $c } @mods ];
7392 @rv = sort { ($b->{'code'} eq "others" ? "" : $b->{'code'}) cmp
7393 ($a->{'code'} eq "others" ? "" : $a->{'code'}) } @rv;
7395 # Add un-installed modules in magic category
7396 my $cat = { 'code' => 'unused',
7397 'desc' => $text{'main_unused'},
7399 'modules' => \@unmods };
7405 =head2 is_under_directory(directory, file)
7407 Returns 1 if the given file is under the specified directory, 0 if not.
7408 Symlinks are taken into account in the file to find it's 'real' location.
7411 sub is_under_directory
7413 my ($dir, $file) = @_;
7414 return 1 if ($dir eq "/");
7415 return 0 if ($file =~ /\.\./);
7416 my $ld = &resolve_links($dir);
7418 return &is_under_directory($ld, $file);
7420 my $lp = &resolve_links($file);
7422 return &is_under_directory($dir, $lp);
7424 return 0 if (length($file) < length($dir));
7425 return 1 if ($dir eq $file);
7427 return substr($file, 0, length($dir)) eq $dir;
7430 =head2 parse_http_url(url, [basehost, baseport, basepage, basessl])
7432 Given an absolute URL, returns the host, port, page and ssl flag components.
7433 If a username and password are given before the hostname, return those too.
7434 Relative URLs can also be parsed, if the base information is provided.
7439 if ($_[0] =~ /^(http|https):\/\/([^\@]+\@)?\[([^\]]+)\](:(\d+))?(\/\S*)?$/ ||
7440 $_[0] =~ /^(http|https):\/\/([^\@]+\@)?([^:\/]+)(:(\d+))?(\/\S*)?$/) {
7442 my $ssl = $1 eq 'https';
7443 my @rv = ($3, $4 ? $5 : $ssl ? 443 : 80, $6 || "/", $ssl);
7444 if ($2 =~ /^([^:]+):(\S+)\@/) {
7453 elsif ($_[0] =~ /^\/\S*$/) {
7454 # A relative to the server URL
7455 return ($_[1], $_[2], $_[0], $_[4], $_[5], $_[6]);
7458 # A relative to the directory URL
7460 $page =~ s/[^\/]+$//;
7461 return ($_[1], $_[2], $page.$_[0], $_[4], $_[5], $_[6]);
7465 =head2 check_clicks_function
7467 Returns HTML for a JavaScript function called check_clicks that returns
7468 true when first called, but false subsequently. Useful on onClick for
7469 critical buttons. Deprecated, as this method of preventing duplicate actions
7473 sub check_clicks_function
7478 function check_clicks(form)
7485 for(i=0; i<form.length; i++)
7486 form.elements[i].disabled = true;
7495 =head2 load_entities_map
7497 Returns a hash ref containing mappings between HTML entities (like ouml) and
7498 ascii values (like 246). Mainly for internal use.
7501 sub load_entities_map
7503 if (!%entities_map_cache) {
7505 open(EMAP, "$root_directory/entities_map.txt");
7507 if (/^(\d+)\s+(\S+)/) {
7508 $entities_map_cache{$2} = $1;
7513 return \%entities_map_cache;
7516 =head2 entities_to_ascii(string)
7518 Given a string containing HTML entities like ö and 7, replace them
7519 with their ASCII equivalents.
7522 sub entities_to_ascii
7525 my $emap = &load_entities_map();
7526 $str =~ s/&([a-z]+);/chr($emap->{$1})/ge;
7527 $str =~ s/&#(\d+);/chr($1)/ge;
7531 =head2 get_product_name
7533 Returns either 'webmin' or 'usermin', depending on which program the current
7534 module is in. Useful for modules that can be installed into either.
7537 sub get_product_name
7539 return $gconfig{'product'} if (defined($gconfig{'product'}));
7540 return defined($gconfig{'userconfig'}) ? 'usermin' : 'webmin';
7545 Returns the character set for the current language, such as iso-8859-1.
7550 my $charset = defined($gconfig{'charset'}) ? $gconfig{'charset'} :
7551 $current_lang_info->{'charset'} ?
7552 $current_lang_info->{'charset'} : $default_charset;
7556 =head2 get_display_hostname
7558 Returns the system's hostname for UI display purposes. This may be different
7559 from the actual hostname if you administrator has configured it so in the
7560 Webmin Configuration module.
7563 sub get_display_hostname
7565 if ($gconfig{'hostnamemode'} == 0) {
7566 return &get_system_hostname();
7568 elsif ($gconfig{'hostnamemode'} == 3) {
7569 return $gconfig{'hostnamedisplay'};
7572 my $h = $ENV{'HTTP_HOST'};
7574 if ($gconfig{'hostnamemode'} == 2) {
7575 $h =~ s/^(www|ftp|mail)\.//i;
7581 =head2 save_module_config([&config], [modulename])
7583 Saves the configuration for some module. The config parameter is an optional
7584 hash reference of names and values to save, which defaults to the global
7585 %config hash. The modulename parameter is the module to update the config
7586 file, which defaults to the current module.
7589 sub save_module_config
7591 my $c = $_[0] || { &get_module_variable('%config') };
7592 my $m = defined($_[1]) ? $_[1] : &get_module_name();
7593 &write_file("$config_directory/$m/config", $c);
7596 =head2 save_user_module_config([&config], [modulename])
7598 Saves the user's Usermin preferences for some module. The config parameter is
7599 an optional hash reference of names and values to save, which defaults to the
7600 global %userconfig hash. The modulename parameter is the module to update the
7601 config file, which defaults to the current module.
7604 sub save_user_module_config
7606 my $c = $_[0] || { &get_module_variable('%userconfig') };
7607 my $m = $_[1] || &get_module_name();
7608 my $ucd = $user_config_directory;
7610 my @uinfo = @remote_user_info ? @remote_user_info
7611 : getpwnam($remote_user);
7612 return if (!@uinfo || !$uinfo[7]);
7613 $ucd = "$uinfo[7]/$gconfig{'userconfig'}";
7615 &write_file("$ucd/$m/config", $c);
7618 =head2 nice_size(bytes, [min])
7620 Converts a number of bytes into a number followed by a suffix like GB, MB
7621 or kB. Rounding is to two decimal digits. The optional min parameter sets the
7622 smallest units to use - so you could pass 1024*1024 to never show bytes or kB.
7627 my ($units, $uname);
7628 if (abs($_[0]) > 1024*1024*1024*1024 || $_[1] >= 1024*1024*1024*1024) {
7629 $units = 1024*1024*1024*1024;
7632 elsif (abs($_[0]) > 1024*1024*1024 || $_[1] >= 1024*1024*1024) {
7633 $units = 1024*1024*1024;
7636 elsif (abs($_[0]) > 1024*1024 || $_[1] >= 1024*1024) {
7640 elsif (abs($_[0]) > 1024 || $_[1] >= 1024) {
7648 my $sz = sprintf("%.2f", ($_[0]*1.0 / $units));
7650 return $sz." ".$uname;
7653 =head2 get_perl_path
7655 Returns the path to Perl currently in use, such as /usr/bin/perl.
7660 if (open(PERL, "$config_directory/perl-path")) {
7666 return $^X if (-x $^X);
7667 return &has_command("perl");
7670 =head2 get_goto_module([&mods])
7672 Returns the details of a module that the current user should be re-directed
7673 to after logging in, or undef if none. Useful for themes.
7678 my @mods = $_[0] ? @{$_[0]} : &get_visible_module_infos();
7679 if ($gconfig{'gotomodule'}) {
7680 my ($goto) = grep { $_->{'dir'} eq $gconfig{'gotomodule'} } @mods;
7681 return $goto if ($goto);
7683 if (@mods == 1 && $gconfig{'gotoone'}) {
7689 =head2 select_all_link(field, form, [text])
7691 Returns HTML for a 'Select all' link that uses Javascript to select
7692 multiple checkboxes with the same name. The parameters are :
7694 =item field - Name of the checkbox inputs.
7696 =item form - Index of the form on the page.
7698 =item text - Message for the link, defaulting to 'Select all'.
7703 return &theme_select_all_link(@_) if (defined(&theme_select_all_link));
7704 my ($field, $form, $text) = @_;
7706 $text ||= $text{'ui_selall'};
7707 return "<a class='select_all' href='#' onClick='var ff = document.forms[$form].$field; ff.checked = true; for(i=0; i<ff.length; i++) { if (!ff[i].disabled) { ff[i].checked = true; } } return false'>$text</a>";
7710 =head2 select_invert_link(field, form, text)
7712 Returns HTML for an 'Invert selection' link that uses Javascript to invert the
7713 selection on multiple checkboxes with the same name. The parameters are :
7715 =item field - Name of the checkbox inputs.
7717 =item form - Index of the form on the page.
7719 =item text - Message for the link, defaulting to 'Invert selection'.
7722 sub select_invert_link
7724 return &theme_select_invert_link(@_) if (defined(&theme_select_invert_link));
7725 my ($field, $form, $text) = @_;
7727 $text ||= $text{'ui_selinv'};
7728 return "<a class='select_invert' href='#' onClick='var ff = document.forms[$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>";
7731 =head2 select_rows_link(field, form, text, &rows)
7733 Returns HTML for a link that uses Javascript to select rows with particular
7734 values for their checkboxes. The parameters are :
7736 =item field - Name of the checkbox inputs.
7738 =item form - Index of the form on the page.
7740 =item text - Message for the link, de
7742 =item rows - Reference to an array of 1 or 0 values, indicating which rows to check.
7745 sub select_rows_link
7747 return &theme_select_rows_link(@_) if (defined(&theme_select_rows_link));
7748 my ($field, $form, $text, $rows) = @_;
7750 my $js = "var sel = { ".join(",", map { "\""."e_escape($_)."\":1" } @$rows)." }; ";
7751 $js .= "for(var i=0; i<document.forms[$form].${field}.length; i++) { var r = document.forms[$form].${field}[i]; r.checked = sel[r.value]; } ";
7752 $js .= "return false;";
7753 return "<a href='#' onClick='$js'>$text</a>";
7756 =head2 check_pid_file(file)
7758 Given a pid file, returns the PID it contains if the process is running.
7763 open(PIDFILE, $_[0]) || return undef;
7764 my $pid = <PIDFILE>;
7766 $pid =~ /^\s*(\d+)/ || return undef;
7767 kill(0, $1) || return undef;
7773 Return the local os-specific library name to this module. For internal use only.
7778 my $mn = &get_module_name();
7779 my $md = &module_root_directory($mn);
7780 if (-r "$md/$mn-$gconfig{'os_type'}-$gconfig{'os_version'}-lib.pl") {
7781 return "$mn-$gconfig{'os_type'}-$gconfig{'os_version'}-lib.pl";
7783 elsif (-r "$md/$mn-$gconfig{'os_type'}-lib.pl") {
7784 return "$mn-$gconfig{'os_type'}-lib.pl";
7786 elsif (-r "$md/$mn-generic-lib.pl") {
7787 return "$mn-generic-lib.pl";
7794 =head2 module_root_directory(module)
7796 Given a module name, returns its root directory. On a typical Webmin install,
7797 all modules are under the same directory - but it is theoretically possible to
7801 sub module_root_directory
7803 my $d = ref($_[0]) ? $_[0]->{'dir'} : $_[0];
7804 if (@root_directories > 1) {
7805 foreach my $r (@root_directories) {
7811 return "$root_directories[0]/$d";
7814 =head2 list_mime_types
7816 Returns a list of all known MIME types and their extensions, as a list of hash
7817 references with keys :
7819 =item type - The MIME type, like text/plain.
7821 =item exts - A list of extensions, like .doc and .avi.
7823 =item desc - A human-readable description for the MIME type.
7828 if (!@list_mime_types_cache) {
7830 open(MIME, "$root_directory/mime.types");
7834 if (s/#\s*(.*)$//g) {
7837 my ($type, @exts) = split(/\s+/);
7839 push(@list_mime_types_cache, { 'type' => $type,
7846 return @list_mime_types_cache;
7849 =head2 guess_mime_type(filename, [default])
7851 Given a file name like xxx.gif or foo.html, returns a guessed MIME type.
7852 The optional default parameter sets a default type of use if none is found,
7853 which defaults to application/octet-stream.
7858 if ($_[0] =~ /\.([A-Za-z0-9\-]+)$/) {
7860 foreach my $t (&list_mime_types()) {
7861 foreach my $e (@{$t->{'exts'}}) {
7862 return $t->{'type'} if (lc($e) eq lc($ext));
7866 return @_ > 1 ? $_[1] : "application/octet-stream";
7869 =head2 open_tempfile([handle], file, [no-error], [no-tempfile], [safe?])
7871 Opens a file handle for writing to a temporary file, which will only be
7872 renamed over the real file when the handle is closed. This allows critical
7873 files like /etc/shadow to be updated safely, even if writing fails part way
7874 through due to lack of disk space. The parameters are :
7876 =item handle - File handle to open, as you would use in Perl's open function.
7878 =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.
7880 =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 $! with the error code.
7882 =item no-tempfile - If set to 1, writing will be direct to the file instead of using a temporary file.
7884 =item safe - Indicates to users in read-only mode that this write is safe and non-destructive.
7890 # Just getting a temp file
7891 if (!defined($main::open_tempfiles{$_[0]})) {
7892 $_[0] =~ /^(.*)\/(.*)$/ || return $_[0];
7893 my $dir = $1 || "/";
7894 my $tmp = "$dir/$2.webmintmp.$$";
7895 $main::open_tempfiles{$_[0]} = $tmp;
7896 push(@main::temporary_files, $tmp);
7898 return $main::open_tempfiles{$_[0]};
7902 my ($fh, $file, $noerror, $notemp, $safe) = @_;
7903 $fh = &callers_package($fh);
7905 my %gaccess = &get_module_acl(undef, "");
7906 my $db = $gconfig{'debug_what_write'};
7907 if ($file =~ /\r|\n|\0/) {
7908 if ($noerror) { return 0; }
7909 else { &error("Filename contains invalid characters"); }
7911 if (&is_readonly_mode() && $file =~ />/ && !$safe) {
7912 # Read-only mode .. veto all writes
7913 print STDERR "vetoing write to $file\n";
7914 return open($fh, ">$null_file");
7916 elsif ($file =~ /^(>|>>|)nul$/i) {
7917 # Write to Windows null device
7918 &webmin_debug_log($1 eq ">" ? "WRITE" :
7919 $1 eq ">>" ? "APPEND" : "READ", "nul") if ($db);
7921 elsif ($file =~ /^(>|>>)(\/dev\/.*)/ || lc($file) eq "nul") {
7922 # Writes to /dev/null or TTYs don't need to be handled
7923 &webmin_debug_log($1 eq ">" ? "WRITE" : "APPEND", $2) if ($db);
7924 return open($fh, $file);
7926 elsif ($file =~ /^>\s*(([a-zA-Z]:)?\/.*)$/ && !$notemp) {
7927 &webmin_debug_log("WRITE", $1) if ($db);
7928 # Over-writing a file, via a temp file
7930 $file = &translate_filename($file);
7932 # Open the link target instead
7933 $file = &resolve_links($file);
7936 # Cannot open a directory!
7937 if ($noerror) { return 0; }
7938 else { &error("Cannot write to directory $file"); }
7940 my $tmp = &open_tempfile($file);
7941 my $ex = open($fh, ">$tmp");
7942 if (!$ex && $! =~ /permission/i) {
7943 # Could not open temp file .. try opening actual file
7945 $ex = open($fh, ">$file");
7946 delete($main::open_tempfiles{$file});
7949 $main::open_temphandles{$fh} = $file;
7952 if (!$ex && !$noerror) {
7953 &error(&text("efileopen", $file, $!));
7957 elsif ($file =~ /^>\s*(([a-zA-Z]:)?\/.*)$/ && $notemp) {
7958 # Just writing direct to a file
7959 &webmin_debug_log("WRITE", $1) if ($db);
7961 $file = &translate_filename($file);
7962 my @old_attributes = &get_clear_file_attributes($file);
7963 my $ex = open($fh, ">$file");
7964 &reset_file_attributes($file, \@old_attributes);
7965 $main::open_temphandles{$fh} = $file;
7966 if (!$ex && !$noerror) {
7967 &error(&text("efileopen", $file, $!));
7972 elsif ($file =~ /^>>\s*(([a-zA-Z]:)?\/.*)$/) {
7973 # Appending to a file .. nothing special to do
7974 &webmin_debug_log("APPEND", $1) if ($db);
7976 $file = &translate_filename($file);
7977 my @old_attributes = &get_clear_file_attributes($file);
7978 my $ex = open($fh, ">>$file");
7979 &reset_file_attributes($file, \@old_attributes);
7980 $main::open_temphandles{$fh} = $file;
7981 if (!$ex && !$noerror) {
7982 &error(&text("efileopen", $file, $!));
7987 elsif ($file =~ /^([a-zA-Z]:)?\//) {
7988 # Read mode .. nothing to do here
7989 &webmin_debug_log("READ", $file) if ($db);
7990 $file = &translate_filename($file);
7991 return open($fh, $file);
7993 elsif ($file eq ">" || $file eq ">>") {
7994 my ($package, $filename, $line) = caller;
7995 if ($noerror) { return 0; }
7996 else { &error("Missing file to open at ${package}::${filename} line $line"); }
7999 my ($package, $filename, $line) = caller;
8000 &error("Unsupported file or mode $file at ${package}::${filename} line $line");
8005 =head2 close_tempfile(file|handle)
8007 Copies a temp file to the actual file, assuming that all writes were
8008 successful. The handle must have been one passed to open_tempfile.
8014 my $fh = &callers_package($_[0]);
8016 if (defined($file = $main::open_temphandles{$fh})) {
8018 close($fh) || &error(&text("efileclose", $file, $!));
8019 delete($main::open_temphandles{$fh});
8020 return &close_tempfile($file);
8022 elsif (defined($main::open_tempfiles{$_[0]})) {
8024 &webmin_debug_log("CLOSE", $_[0]) if ($gconfig{'debug_what_write'});
8025 my @st = stat($_[0]);
8026 if (&is_selinux_enabled() && &has_command("chcon")) {
8027 # Set original security context
8028 system("chcon --reference=".quotemeta($_[0]).
8029 " ".quotemeta($main::open_tempfiles{$_[0]}).
8030 " >/dev/null 2>&1");
8032 my @old_attributes = &get_clear_file_attributes($_[0]);
8033 rename($main::open_tempfiles{$_[0]}, $_[0]) || &error("Failed to replace $_[0] with $main::open_tempfiles{$_[0]} : $!");
8035 # Set original permissions and ownership
8036 chmod($st[2], $_[0]);
8037 chown($st[4], $st[5], $_[0]);
8039 &reset_file_attributes($_[0], \@old_attributes);
8040 delete($main::open_tempfiles{$_[0]});
8041 @main::temporary_files = grep { $_ ne $main::open_tempfiles{$_[0]} } @main::temporary_files;
8042 if ($main::open_templocks{$_[0]}) {
8043 &unlock_file($_[0]);
8044 delete($main::open_templocks{$_[0]});
8049 # Must be closing a handle not associated with a file
8055 =head2 print_tempfile(handle, text, ...)
8057 Like the normal print function, but calls &error on failure. Useful when
8058 combined with open_tempfile, to ensure that a criticial file is never
8059 only partially written.
8064 my ($fh, @args) = @_;
8065 $fh = &callers_package($fh);
8066 (print $fh @args) || &error(&text("efilewrite",
8067 $main::open_temphandles{$fh} || $fh, $!));
8070 =head2 is_selinux_enabled
8072 Returns 1 if SElinux is supported on this system and enabled, 0 if not.
8075 sub is_selinux_enabled
8077 if (!defined($main::selinux_enabled_cache)) {
8079 if ($gconfig{'os_type'} !~ /-linux$/) {
8080 # Not on linux, so no way
8081 $main::selinux_enabled_cache = 0;
8083 elsif (&read_env_file("/etc/selinux/config", \%seconfig)) {
8084 # Use global config file
8085 $main::selinux_enabled_cache =
8086 $seconfig{'SELINUX'} eq 'disabled' ||
8087 !$seconfig{'SELINUX'} ? 0 : 1;
8090 # Use selinuxenabled command
8091 #$selinux_enabled_cache =
8092 # system("selinuxenabled >/dev/null 2>&1") ? 0 : 1;
8093 $main::selinux_enabled_cache = 0;
8096 return $main::selinux_enabled_cache;
8099 =head2 get_clear_file_attributes(file)
8101 Finds file attributes that may prevent writing, clears them and returns them
8102 as a list. May call error. Mainly for internal use by open_tempfile and
8106 sub get_clear_file_attributes
8110 if ($gconfig{'chattr'}) {
8111 # Get original immutable bit
8112 my $out = &backquote_command(
8113 "lsattr ".quotemeta($file)." 2>/dev/null");
8115 $out =~ s/\s\S+\n//;
8116 @old_attributes = grep { $_ ne '-' } split(//, $out);
8118 if (&indexof("i", @old_attributes) >= 0) {
8119 my $err = &backquote_logged(
8120 "chattr -i ".quotemeta($file)." 2>&1");
8122 &error("Failed to remove immutable bit on ".
8127 return @old_attributes;
8130 =head2 reset_file_attributes(file, &attributes)
8132 Put back cleared attributes on some file. May call error. Mainly for internal
8133 use by close_tempfile.
8136 sub reset_file_attributes
8138 my ($file, $old_attributes) = @_;
8139 if (&indexof("i", @$old_attributes) >= 0) {
8140 my $err = &backquote_logged(
8141 "chattr +i ".quotemeta($file)." 2>&1");
8143 &error("Failed to restore immutable bit on ".
8149 =head2 cleanup_tempnames
8151 Remove all temporary files generated using transname. Typically only called
8152 internally when a Webmin script exits.
8155 sub cleanup_tempnames
8157 foreach my $t (@main::temporary_files) {
8160 @main::temporary_files = ( );
8163 =head2 open_lock_tempfile([handle], file, [no-error])
8165 Returns a temporary file for writing to some actual file, and also locks it.
8166 Effectively the same as calling lock_file and open_tempfile on the same file,
8167 but calls the unlock for you automatically when it is closed.
8170 sub open_lock_tempfile
8172 my ($fh, $file, $noerror, $notemp, $safe) = @_;
8173 $fh = &callers_package($fh);
8174 my $lockfile = $file;
8175 $lockfile =~ s/^[^\/]*//;
8176 if ($lockfile =~ /^\//) {
8177 $main::open_templocks{$lockfile} = &lock_file($lockfile);
8179 return &open_tempfile($fh, $file, $noerror, $notemp, $safe);
8184 $main::end_exit_status ||= $?;
8185 if ($$ == $main::initial_process_id) {
8186 # Exiting from initial process
8187 &cleanup_tempnames();
8188 if ($gconfig{'debug_what_start'} && $main::debug_log_start_time &&
8189 $main::debug_log_start_module eq &get_module_name()) {
8190 my $len = time() - $main::debug_log_start_time;
8191 &webmin_debug_log("STOP", "runtime=$len");
8192 $main::debug_log_start_time = 0;
8194 if (!$ENV{'SCRIPT_NAME'} &&
8195 $main::initial_module_name eq &get_module_name()) {
8196 # In a command-line script - call the real exit, so that the
8197 # exit status gets properly propogated. In some cases this
8198 # was not happening.
8199 exit($main::end_exit_status);
8204 =head2 month_to_number(month)
8206 Converts a month name like feb to a number like 1.
8211 return $month_to_number_map{lc(substr($_[0], 0, 3))};
8214 =head2 number_to_month(number)
8216 Converts a number like 1 to a month name like Feb.
8221 return ucfirst($number_to_month_map{$_[0]});
8224 =head2 get_rbac_module_acl(user, module)
8226 Returns a hash reference of RBAC overrides ACLs for some user and module.
8227 May return undef if none exist (indicating access denied), or the string *
8228 if full access is granted.
8231 sub get_rbac_module_acl
8233 my ($user, $mod) = @_;
8234 eval "use Authen::SolarisRBAC";
8235 return undef if ($@);
8238 if (Authen::SolarisRBAC::chkauth("webmin.$mod.admin", $user)) {
8239 # Automagic webmin.modulename.admin authorization exists .. allow access
8241 if (!Authen::SolarisRBAC::chkauth("webmin.$mod.config", $user)) {
8242 %rv = ( 'noconfig' => 1 );
8249 open(RBAC, &module_root_directory($mod)."/rbac-mapping");
8253 my ($auths, $acls) = split(/\s+/, $_);
8254 my @auths = split(/,/, $auths);
8256 my ($merge) = ($acls =~ s/^\+//);
8258 if ($auths eq "*") {
8259 # These ACLs apply to all RBAC users.
8260 # Only if there is some that match a specific authorization
8261 # later will they be used though.
8264 # Check each of the RBAC authorizations
8265 foreach my $a (@auths) {
8266 if (!Authen::SolarisRBAC::chkauth($a, $user)) {
8271 $foundany++ if ($gotall);
8274 # Found an RBAC authorization - return the ACLs
8275 return "*" if ($acls eq "*");
8276 my %acl = map { split(/=/, $_, 2) } split(/,/, $acls);
8278 # Just add to current set
8279 foreach my $a (keys %acl) {
8290 return !$foundany ? undef : %rv ? \%rv : undef;
8293 =head2 supports_rbac([module])
8295 Returns 1 if RBAC client support is available, such as on Solaris.
8300 return 0 if ($gconfig{'os_type'} ne 'solaris');
8301 eval "use Authen::SolarisRBAC";
8304 #return 0 if (!-r &module_root_directory($_[0])."/rbac-mapping");
8309 =head2 supports_ipv6()
8311 Returns 1 if outgoing IPv6 connections can be made
8316 return $ipv6_module_error ? 0 : 1;
8319 =head2 use_rbac_module_acl(user, module)
8321 Returns 1 if some user should use RBAC to get permissions for a module
8324 sub use_rbac_module_acl
8326 my $u = defined($_[0]) ? $_[0] : $base_remote_user;
8327 my $m = defined($_[1]) ? $_[1] : &get_module_name();
8328 return 1 if ($gconfig{'rbacdeny_'.$u}); # RBAC forced for user
8329 my %access = &get_module_acl($u, $m, 1);
8330 return $access{'rbac'} ? 1 : 0;
8333 =head2 execute_command(command, stdin, stdout, stderr, translate-files?, safe?)
8335 Runs some command, possibly feeding it input and capturing output to the
8336 give files or scalar references. The parameters are :
8338 =item command - Full command to run, possibly including shell meta-characters.
8340 =item stdin - File to read input from, or a scalar ref containing input, or undef if no input should be given.
8342 =item stdout - File to write output to, or a scalar ref into which output should be placed, or undef if the output is to be discarded.
8344 =item stderr - File to write error output to, or a scalar ref into which error output should be placed, or undef if the error output is to be discarded.
8346 =item translate-files - Set to 1 to apply filename translation to any filenames. Usually has no effect.
8348 =item safe - Set to 1 if this command is safe and does not modify the state of the system.
8353 my ($cmd, $stdin, $stdout, $stderr, $trans, $safe) = @_;
8354 if (&is_readonly_mode() && !$safe) {
8355 print STDERR "Vetoing command $_[0]\n";
8359 $cmd = &translate_command($cmd);
8361 # Use ` operator where possible
8362 &webmin_debug_log('CMD', "cmd=$cmd") if ($gconfig{'debug_what_cmd'});
8363 if (!$stdin && ref($stdout) && !$stderr) {
8364 $cmd = "($cmd)" if ($gconfig{'os_type'} ne 'windows');
8365 $$stdout = `$cmd 2>$null_file`;
8368 elsif (!$stdin && ref($stdout) && $stdout eq $stderr) {
8369 $cmd = "($cmd)" if ($gconfig{'os_type'} ne 'windows');
8370 $$stdout = `$cmd 2>&1`;
8373 elsif (!$stdin && !$stdout && !$stderr) {
8374 $cmd = "($cmd)" if ($gconfig{'os_type'} ne 'windows');
8375 return system("$cmd >$null_file 2>$null_file <$null_file");
8379 $| = 1; # needed on some systems to flush before forking
8380 pipe(EXECSTDINr, EXECSTDINw);
8381 pipe(EXECSTDOUTr, EXECSTDOUTw);
8382 pipe(EXECSTDERRr, EXECSTDERRw);
8384 if (!($pid = fork())) {
8388 open(STDIN, "<&EXECSTDINr");
8389 open(STDOUT, ">&EXECSTDOUTw");
8390 if (ref($stderr) && $stderr eq $stdout) {
8391 open(STDERR, ">&EXECSTDOUTw");
8394 open(STDERR, ">&EXECSTDERRw");
8401 my $fullcmd = "($cmd)";
8402 if ($stdin && !ref($stdin)) {
8403 $fullcmd .= " <$stdin";
8405 if ($stdout && !ref($stdout)) {
8406 $fullcmd .= " >$stdout";
8408 if ($stderr && !ref($stderr)) {
8409 if ($stderr eq $stdout) {
8410 $fullcmd .= " 2>&1";
8413 $fullcmd .= " 2>$stderr";
8416 if ($gconfig{'os_type'} eq 'windows') {
8420 exec("/bin/sh", "-c", $fullcmd);
8422 print "Exec failed : $!\n";
8429 # Feed input and capture output
8431 if ($stdin && ref($stdin)) {
8432 print EXECSTDINw $$stdin;
8435 if ($stdout && ref($stdout)) {
8437 while(<EXECSTDOUTr>) {
8442 if ($stderr && ref($stderr) && $stderr ne $stdout) {
8444 while(<EXECSTDERRr>) {
8455 =head2 open_readfile(handle, file)
8457 Opens some file for reading. Returns 1 on success, 0 on failure. Pretty much
8458 exactly the same as Perl's open function.
8463 my ($fh, $file) = @_;
8464 $fh = &callers_package($fh);
8465 my $realfile = &translate_filename($file);
8466 &webmin_debug_log('READ', $file) if ($gconfig{'debug_what_read'});
8467 return open($fh, "<".$realfile);
8470 =head2 open_execute_command(handle, command, output?, safe?)
8472 Runs some command, with the specified file handle set to either write to it if
8473 in-or-out is set to 0, or read to it if output is set to 1. The safe flag
8474 indicates if the command modifies the state of the system or not.
8477 sub open_execute_command
8479 my ($fh, $cmd, $mode, $safe) = @_;
8480 $fh = &callers_package($fh);
8481 my $realcmd = &translate_command($cmd);
8482 if (&is_readonly_mode() && !$safe) {
8483 # Don't actually run it
8484 print STDERR "vetoing command $cmd\n";
8487 return open($fh, ">$null_file");
8490 return open($fh, $null_file);
8494 &webmin_debug_log('CMD', "cmd=$realcmd mode=$mode")
8495 if ($gconfig{'debug_what_cmd'});
8497 return open($fh, "| $cmd");
8499 elsif ($mode == 1) {
8500 return open($fh, "$cmd 2>$null_file |");
8502 elsif ($mode == 2) {
8503 return open($fh, "$cmd 2>&1 |");
8507 =head2 translate_filename(filename)
8509 Applies all relevant registered translation functions to a filename. Mostly
8510 for internal use, and typically does nothing.
8513 sub translate_filename
8515 my ($realfile) = @_;
8516 my @funcs = grep { $_->[0] eq &get_module_name() ||
8517 !defined($_->[0]) } @main::filename_callbacks;
8518 foreach my $f (@funcs) {
8520 $realfile = &$func($realfile, @{$f->[2]});
8525 =head2 translate_command(filename)
8527 Applies all relevant registered translation functions to a command. Mostly
8528 for internal use, and typically does nothing.
8531 sub translate_command
8534 my @funcs = grep { $_->[0] eq &get_module_name() ||
8535 !defined($_->[0]) } @main::command_callbacks;
8536 foreach my $f (@funcs) {
8538 $realcmd = &$func($realcmd, @{$f->[2]});
8543 =head2 register_filename_callback(module|undef, &function, &args)
8545 Registers some function to be called when the specified module (or all
8546 modules) tries to open a file for reading and writing. The function must
8547 return the actual file to open. This allows you to override which files
8548 other code actually operates on, via the translate_filename function.
8551 sub register_filename_callback
8553 my ($mod, $func, $args) = @_;
8554 push(@main::filename_callbacks, [ $mod, $func, $args ]);
8557 =head2 register_command_callback(module|undef, &function, &args)
8559 Registers some function to be called when the specified module (or all
8560 modules) tries to execute a command. The function must return the actual
8561 command to run. This allows you to override which commands other other code
8562 actually runs, via the translate_command function.
8565 sub register_command_callback
8567 my ($mod, $func, $args) = @_;
8568 push(@main::command_callbacks, [ $mod, $func, $args ]);
8571 =head2 capture_function_output(&function, arg, ...)
8573 Captures output that some function prints to STDOUT, and returns it. Useful
8574 for functions outside your control that print data when you really want to
8575 manipulate it before output.
8578 sub capture_function_output
8580 my ($func, @args) = @_;
8581 socketpair(SOCKET2, SOCKET1, AF_UNIX, SOCK_STREAM, PF_UNSPEC);
8582 my $old = select(SOCKET1);
8583 my @rv = &$func(@args);
8592 return wantarray ? ($out, \@rv) : $out;
8595 =head2 capture_function_output_tempfile(&function, arg, ...)
8597 Behaves the same as capture_function_output, but uses a temporary file
8598 to avoid buffer full problems.
8601 sub capture_function_output_tempfile
8603 my ($func, @args) = @_;
8604 my $temp = &transname();
8605 open(BUFFER, ">$temp");
8606 my $old = select(BUFFER);
8607 my @rv = &$func(@args);
8610 my $out = &read_file_contents($temp);
8611 &unlink_file($temp);
8612 return wantarray ? ($out, \@rv) : $out;
8615 =head2 modules_chooser_button(field, multiple, [form])
8617 Returns HTML for a button for selecting one or many Webmin modules.
8618 field - Name of the HTML field to place the module names into.
8619 multiple - Set to 1 if multiple modules can be selected.
8620 form - Index of the form on the page.
8623 sub modules_chooser_button
8625 return &theme_modules_chooser_button(@_)
8626 if (defined(&theme_modules_chooser_button));
8627 my $form = defined($_[2]) ? $_[2] : 0;
8628 my $w = $_[1] ? 700 : 500;
8630 if ($_[1] && $gconfig{'db_sizemodules'}) {
8631 ($w, $h) = split(/x/, $gconfig{'db_sizemodules'});
8633 elsif (!$_[1] && $gconfig{'db_sizemodule'}) {
8634 ($w, $h) = split(/x/, $gconfig{'db_sizemodule'});
8636 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";
8639 =head2 substitute_template(text, &hash)
8641 Given some text and a hash reference, for each ocurrance of $FOO or ${FOO} in
8642 the text replaces it with the value of the hash key foo. Also supports blocks
8643 like ${IF-FOO} ... ${ENDIF-FOO}, whose contents are only included if foo is
8644 non-zero, and ${IF-FOO} ... ${ELSE-FOO} ... ${ENDIF-FOO}.
8647 sub substitute_template
8649 # Add some extra fixed parameters to the hash
8650 my %hash = %{$_[1]};
8651 $hash{'hostname'} = &get_system_hostname();
8652 $hash{'webmin_config'} = $config_directory;
8653 $hash{'webmin_etc'} = $config_directory;
8654 $hash{'module_config'} = &get_module_variable('$module_config_directory');
8655 $hash{'webmin_var'} = $var_directory;
8657 # Add time-based parameters, for use in DNS
8658 $hash{'current_time'} = time();
8659 my @tm = localtime($hash{'current_time'});
8660 $hash{'current_year'} = $tm[5]+1900;
8661 $hash{'current_month'} = sprintf("%2.2d", $tm[4]+1);
8662 $hash{'current_day'} = sprintf("%2.2d", $tm[3]);
8663 $hash{'current_hour'} = sprintf("%2.2d", $tm[2]);
8664 $hash{'current_minute'} = sprintf("%2.2d", $tm[1]);
8665 $hash{'current_second'} = sprintf("%2.2d", $tm[0]);
8667 # Actually do the substition
8669 foreach my $s (keys %hash) {
8670 next if ($s eq ''); # Prevent just $ from being subbed
8673 $rv =~ s/\$\{\Q$us\E\}/$sv/g;
8674 $rv =~ s/\$\Q$us\E/$sv/g;
8676 # Replace ${IF}..${ELSE}..${ENDIF} block with first value,
8677 # and ${IF}..${ENDIF} with value
8678 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ELSE-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)/$2/g;
8679 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)/$2/g;
8681 # Replace $IF..$ELSE..$ENDIF block with first value,
8682 # and $IF..$ENDIF with value
8683 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ELSE-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)/$2/g;
8684 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)/$2/g;
8686 # Replace ${IFEQ}..${ENDIFEQ} block with first value if
8687 # matching, nothing if not
8688 $rv =~ s/\$\{IFEQ-\Q$us\E-\Q$sv\E\}(\n?)([\000-\377]*?)\$\{ENDIFEQ-\Q$us\E-\Q$sv\E\}(\n?)/$2/g;
8689 $rv =~ s/\$\{IFEQ-\Q$us\E-[^\}]+}(\n?)([\000-\377]*?)\$\{ENDIFEQ-\Q$us\E-[^\}]+\}(\n?)//g;
8691 # Replace $IFEQ..$ENDIFEQ block with first value if
8692 # matching, nothing if not
8693 $rv =~ s/\$IFEQ-\Q$us\E-\Q$sv\E(\n?)([\000-\377]*?)\$ENDIFEQ-\Q$us\E-\Q$sv\E(\n?)/$2/g;
8694 $rv =~ s/\$IFEQ-\Q$us\E-\S+(\n?)([\000-\377]*?)\$ENDIFEQ-\Q$us\E-\S+(\n?)//g;
8697 # Replace ${IF}..${ELSE}..${ENDIF} block with second value,
8698 # and ${IF}..${ENDIF} with nothing
8699 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ELSE-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)/$4/g;
8700 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)//g;
8702 # Replace $IF..$ELSE..$ENDIF block with second value,
8703 # and $IF..$ENDIF with nothing
8704 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ELSE-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)/$4/g;
8705 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)//g;
8707 # Replace ${IFEQ}..${ENDIFEQ} block with nothing
8708 $rv =~ s/\$\{IFEQ-\Q$us\E-[^\}]+}(\n?)([\000-\377]*?)\$\{ENDIFEQ-\Q$us\E-[^\}]+\}(\n?)//g;
8709 $rv =~ s/\$IFEQ-\Q$us\E-\S+(\n?)([\000-\377]*?)\$ENDIFEQ-\Q$us\E-\S+(\n?)//g;
8713 # Now assume any $IF blocks whose variables are not present in the hash
8714 # evaluate to false.
8715 # $IF...$ELSE x $ENDIF => x
8716 $rv =~ s/\$\{IF\-([A-Z]+)\}.*?\$\{ELSE\-\1\}(.*?)\$\{ENDIF\-\1\}/$2/gs;
8717 # $IF...x...$ENDIF => (nothing)
8718 $rv =~ s/\$\{IF\-([A-Z]+)\}.*?\$\{ENDIF\-\1\}//gs;
8719 # ${var} => (nothing)
8720 $rv =~ s/\$\{[A-Z]+\}//g;
8725 =head2 running_in_zone
8727 Returns 1 if the current Webmin instance is running in a Solaris zone. Used to
8728 disable module and features that are not appropriate, like those that modify
8729 mounted filesystems.
8734 return 0 if ($gconfig{'os_type'} ne 'solaris' ||
8735 $gconfig{'os_version'} < 10);
8736 my $zn = `zonename 2>$null_file`;
8738 return $zn && $zn ne "global";
8741 =head2 running_in_vserver
8743 Returns 1 if the current Webmin instance is running in a Linux VServer.
8744 Used to disable modules and features that are not appropriate.
8747 sub running_in_vserver
8749 return 0 if ($gconfig{'os_type'} !~ /^\*-linux$/);
8752 open(MTAB, "/etc/mtab");
8754 my ($dev, $mp) = split(/\s+/, $_);
8755 if ($mp eq "/" && $dev =~ /^\/dev\/hdv/) {
8764 =head2 running_in_xen
8766 Returns 1 if Webmin is running inside a Xen instance, by looking
8767 at /proc/xen/capabilities.
8772 return 0 if (!-r "/proc/xen/capabilities");
8773 my $cap = &read_file_contents("/proc/xen/capabilities");
8774 return $cap =~ /control_d/ ? 0 : 1;
8777 =head2 running_in_openvz
8779 Returns 1 if Webmin is running inside an OpenVZ container, by looking
8780 at /proc/vz/veinfo for a non-zero line.
8783 sub running_in_openvz
8785 return 0 if (!-r "/proc/vz/veinfo");
8786 my $lref = &read_file_lines("/proc/vz/veinfo", 1);
8787 return 0 if (!$lref || !@$lref);
8788 foreach my $l (@$lref) {
8790 my @ll = split(/\s+/, $l);
8791 return 0 if ($ll[0] eq '0');
8796 =head2 list_categories(&modules, [include-empty])
8798 Returns a hash mapping category codes to names, including any custom-defined
8799 categories. The modules parameter must be an array ref of module hash objects,
8800 as returned by get_all_module_infos.
8805 my ($mods, $empty) = @_;
8806 my (%cats, %catnames);
8807 &read_file("$config_directory/webmin.catnames", \%catnames);
8808 foreach my $o (@lang_order_list) {
8809 &read_file("$config_directory/webmin.catnames.$o", \%catnames);
8814 foreach my $m (@$mods) {
8815 my $c = $m->{'category'};
8816 next if ($cats{$c});
8817 if (defined($catnames{$c})) {
8818 $cats{$c} = $catnames{$c};
8820 elsif ($text{"category_$c"}) {
8821 $cats{$c} = $text{"category_$c"};
8824 # try to get category name from module ..
8825 my %mtext = &load_language($m->{'dir'});
8826 if ($mtext{"category_$c"}) {
8827 $cats{$c} = $mtext{"category_$c"};
8830 $c = $m->{'category'} = "";
8831 $cats{$c} = $text{"category_$c"};
8838 =head2 is_readonly_mode
8840 Returns 1 if the current user is in read-only mode, and thus all writes
8841 to files and command execution should fail.
8844 sub is_readonly_mode
8846 if (!defined($main::readonly_mode_cache)) {
8847 my %gaccess = &get_module_acl(undef, "");
8848 $main::readonly_mode_cache = $gaccess{'readonly'} ? 1 : 0;
8850 return $main::readonly_mode_cache;
8853 =head2 command_as_user(user, with-env?, command, ...)
8855 Returns a command to execute some command as the given user, using the
8856 su statement. If on Linux, the /bin/sh shell is forced in case the user
8857 does not have a valid shell. If with-env is set to 1, the -s flag is added
8858 to the su command to read the user's .profile or .bashrc file.
8863 my ($user, $env, @args) = @_;
8864 my @uinfo = getpwnam($user);
8865 if ($uinfo[8] ne "/bin/sh" && $uinfo[8] !~ /\/bash$/) {
8866 # User shell doesn't appear to be valid
8867 if ($gconfig{'os_type'} =~ /-linux$/) {
8868 # Use -s /bin/sh to force it
8869 $shellarg = " -s /bin/sh";
8871 elsif ($gconfig{'os_type'} eq 'freebsd' ||
8872 $gconfig{'os_type'} eq 'solaris' &&
8873 $gconfig{'os_version'} >= 11 ||
8874 $gconfig{'os_type'} eq 'macos') {
8875 # Use -m and force /bin/sh
8876 @args = ( "/bin/sh", "-c", quotemeta(join(" ", @args)) );
8880 my $rv = "su".($env ? " -" : "").$shellarg.
8881 " ".quotemeta($user)." -c ".quotemeta(join(" ", @args));
8885 =head2 list_osdn_mirrors(project, file)
8887 This function is now deprecated in favor of letting sourceforge just
8888 redirect to the best mirror, and now just returns their primary download URL.
8891 sub list_osdn_mirrors
8893 my ($project, $file) = @_;
8894 return ( { 'url' => "http://downloads.sourceforge.net/$project/$file",
8896 'mirror' => 'downloads' } );
8899 =head2 convert_osdn_url(url)
8901 Given a URL like http://osdn.dl.sourceforge.net/sourceforge/project/file.zip
8902 or http://prdownloads.sourceforge.net/project/file.zip , convert it
8903 to a real URL on the sourceforge download redirector.
8906 sub convert_osdn_url
8909 if ($url =~ /^http:\/\/[^\.]+.dl.sourceforge.net\/sourceforge\/([^\/]+)\/(.*)$/ ||
8910 $url =~ /^http:\/\/prdownloads.sourceforge.net\/([^\/]+)\/(.*)$/) {
8911 # Always use the Sourceforge mail download URL, which does
8912 # a location-based redirect for us
8913 my ($project, $file) = ($1, $2);
8914 $url = "http://prdownloads.sourceforge.net/sourceforge/".
8916 return wantarray ? ( $url, 0 ) : $url;
8919 # Some other source .. don't change
8920 return wantarray ? ( $url, 2 ) : $url;
8924 =head2 get_current_dir
8926 Returns the directory the current process is running in.
8932 if ($gconfig{'os_type'} eq 'windows') {
8945 =head2 supports_users
8947 Returns 1 if the current OS supports Unix user concepts and functions like
8948 su , getpw* and so on. This will be true on Linux and other Unixes, but false
8954 return $gconfig{'os_type'} ne 'windows';
8957 =head2 supports_symlinks
8959 Returns 1 if the current OS supports symbolic and hard links. This will not
8960 be the case on Windows.
8963 sub supports_symlinks
8965 return $gconfig{'os_type'} ne 'windows';
8968 =head2 quote_path(path)
8970 Returns a path with safe quoting for the current operating system.
8976 if ($gconfig{'os_type'} eq 'windows' || $path =~ /^[a-z]:/i) {
8977 # Windows only supports "" style quoting
8981 return quotemeta($path);
8985 =head2 get_windows_root
8987 Returns the base windows system directory, like c:/windows.
8990 sub get_windows_root
8992 if ($ENV{'SystemRoot'}) {
8993 my $rv = $ENV{'SystemRoot'};
8998 return -d "c:/windows" ? "c:/windows" : "c:/winnt";
9002 =head2 read_file_contents(file)
9004 Given a filename, returns its complete contents as a string. Effectively
9005 the same as the Perl construct `cat file`.
9008 sub read_file_contents
9010 &open_readfile(FILE, $_[0]) || return undef;
9017 =head2 unix_crypt(password, salt)
9019 Performs Unix encryption on a password, using the built-in crypt function or
9020 the Crypt::UnixCrypt module if the former does not work. The salt parameter
9021 must be either an already-hashed password, or a two-character alpha-numeric
9027 my ($pass, $salt) = @_;
9028 return "" if ($salt !~ /^[a-zA-Z0-9\.\/]{2}/); # same as real crypt
9029 my $rv = eval "crypt(\$pass, \$salt)";
9031 return $rv if ($rv && !$@);
9032 eval "use Crypt::UnixCrypt";
9034 return Crypt::UnixCrypt::crypt($pass, $salt);
9037 &error("Failed to encrypt password : $err");
9041 =head2 split_quoted_string(string)
9043 Given a string like I<foo "bar baz" quux>, returns the array :
9047 sub split_quoted_string
9051 while($str =~ /^"([^"]*)"\s*([\000-\377]*)$/ ||
9052 $str =~ /^'([^']*)'\s*([\000-\377]*)$/ ||
9053 $str =~ /^(\S+)\s*([\000-\377]*)$/) {
9060 =head2 write_to_http_cache(url, file|&data)
9062 Updates the Webmin cache with the contents of the given file, possibly also
9063 clearing out old data. Mainly for internal use by http_download.
9066 sub write_to_http_cache
9068 my ($url, $file) = @_;
9069 return 0 if (!$gconfig{'cache_size'});
9071 # Don't cache downloads that look dynamic
9072 if ($url =~ /cgi-bin/ || $url =~ /\?/) {
9076 # Check if the current module should do caching
9077 if ($gconfig{'cache_mods'} =~ /^\!(.*)$/) {
9078 # Caching all except some modules
9079 my @mods = split(/\s+/, $1);
9080 return 0 if (&indexof(&get_module_name(), @mods) != -1);
9082 elsif ($gconfig{'cache_mods'}) {
9083 # Only caching some modules
9084 my @mods = split(/\s+/, $gconfig{'cache_mods'});
9085 return 0 if (&indexof(&get_module_name(), @mods) == -1);
9091 $size = length($$file);
9094 my @st = stat($file);
9098 if ($size > $gconfig{'cache_size'}) {
9099 # Bigger than the whole cache - so don't save it
9104 $cfile = "$main::http_cache_directory/$cfile";
9106 # See how much we have cached currently, clearing old files
9108 mkdir($main::http_cache_directory, 0700) if (!-d $main::http_cache_directory);
9109 opendir(CACHEDIR, $main::http_cache_directory);
9110 foreach my $f (readdir(CACHEDIR)) {
9111 next if ($f eq "." || $f eq "..");
9112 my $path = "$main::http_cache_directory/$f";
9113 my @st = stat($path);
9114 if ($gconfig{'cache_days'} &&
9115 time()-$st[9] > $gconfig{'cache_days'}*24*60*60) {
9116 # This file is too old .. trash it
9121 push(@cached, [ $path, $st[7], $st[9] ]);
9125 @cached = sort { $a->[2] <=> $b->[2] } @cached;
9126 while($total+$size > $gconfig{'cache_size'} && @cached) {
9127 # Cache is too big .. delete some files until the new one will fit
9128 unlink($cached[0]->[0]);
9129 $total -= $cached[0]->[1];
9133 # Finally, write out the new file
9135 &open_tempfile(CACHEFILE, ">$cfile");
9136 &print_tempfile(CACHEFILE, $$file);
9137 &close_tempfile(CACHEFILE);
9140 my ($ok, $err) = ©_source_dest($file, $cfile);
9146 =head2 check_in_http_cache(url)
9148 If some URL is in the cache and valid, return the filename for it. Mainly
9149 for internal use by http_download.
9152 sub check_in_http_cache
9155 return undef if (!$gconfig{'cache_size'});
9157 # Check if the current module should do caching
9158 if ($gconfig{'cache_mods'} =~ /^\!(.*)$/) {
9159 # Caching all except some modules
9160 my @mods = split(/\s+/, $1);
9161 return 0 if (&indexof(&get_module_name(), @mods) != -1);
9163 elsif ($gconfig{'cache_mods'}) {
9164 # Only caching some modules
9165 my @mods = split(/\s+/, $gconfig{'cache_mods'});
9166 return 0 if (&indexof(&get_module_name(), @mods) == -1);
9171 $cfile = "$main::http_cache_directory/$cfile";
9172 my @st = stat($cfile);
9173 return undef if (!@st || !$st[7]);
9174 if ($gconfig{'cache_days'} && time()-$st[9] > $gconfig{'cache_days'}*24*60*60) {
9179 open(TOUCH, ">>$cfile"); # Update the file time, to keep it in the cache
9184 =head2 supports_javascript
9186 Returns 1 if the current browser is assumed to support javascript.
9189 sub supports_javascript
9191 if (defined(&theme_supports_javascript)) {
9192 return &theme_supports_javascript();
9194 return $ENV{'MOBILE_DEVICE'} ? 0 : 1;
9197 =head2 get_module_name
9199 Returns the name of the Webmin module that called this function. For internal
9200 use only by other API functions.
9205 return &get_module_variable('$module_name');
9208 =head2 get_module_variable(name, [ref])
9210 Returns the value of some variable which is set in the caller's context, if
9211 using the new WebminCore package. For internal use only.
9214 sub get_module_variable
9216 my ($v, $wantref) = @_;
9217 my $slash = $wantref ? "\\" : "";
9218 my $thispkg = &web_libs_package();
9219 if ($thispkg eq 'WebminCore') {
9220 my ($vt, $vn) = split('', $v, 2);
9222 for(my $i=0; ($callpkg) = caller($i); $i++) {
9223 last if ($callpkg ne $thispkg);
9225 return eval "${slash}${vt}${callpkg}::${vn}";
9227 return eval "${slash}${v}";
9230 =head2 clear_time_locale()
9232 Temporarily force the locale to C, until reset_time_locale is called. This is
9233 useful if your code is going to call C<strftime> from the POSIX package, and
9234 you want to ensure that the output is in a consistent format.
9237 sub clear_time_locale
9239 if ($main::clear_time_locale_count == 0) {
9242 $main::clear_time_locale_old = POSIX::setlocale(POSIX::LC_TIME);
9243 POSIX::setlocale(POSIX::LC_TIME, "C");
9246 $main::clear_time_locale_count++;
9249 =head2 reset_time_locale()
9251 Revert the locale to whatever it was before clear_time_locale was called
9254 sub reset_time_locale
9256 if ($main::clear_time_locale_count == 1) {
9258 POSIX::setlocale(POSIX::LC_TIME, $main::clear_time_locale_old);
9259 $main::clear_time_locale_old = undef;
9262 $main::clear_time_locale_count--;
9265 =head2 callers_package(filehandle)
9267 Convert a non-module filehandle like FOO to one qualified with the
9268 caller's caller's package, like fsdump::FOO. For internal use only.
9274 my $callpkg = (caller(1))[0];
9275 my $thispkg = &web_libs_package();
9276 if (!ref($fh) && $fh !~ /::/ &&
9277 $callpkg ne $thispkg && $thispkg eq 'WebminCore') {
9278 $fh = $callpkg."::".$fh;
9283 =head2 web_libs_package()
9285 Returns the package this code is in. We can't always trust __PACKAGE__. For
9289 sub web_libs_package
9291 if ($called_from_webmin_core) {
9292 return "WebminCore";
9297 =head2 get_userdb_string
9299 Returns the URL-style string for connecting to the users and groups database
9302 sub get_userdb_string
9304 return undef if ($main::no_miniserv_userdb);
9306 &get_miniserv_config(\%miniserv);
9307 return $miniserv{'userdb'};
9310 =head2 connect_userdb(string)
9312 Returns a handle for talking to a user database - may be a DBI or LDAP handle.
9313 On failure returns an error message string. In an array context, returns the
9320 my ($proto, $user, $pass, $host, $prefix, $args) = &split_userdb_string($str);
9321 if ($proto eq "mysql") {
9322 # Connect to MySQL with DBI
9323 my $drh = eval "use DBI; DBI->install_driver('mysql');";
9324 $drh || return $text{'sql_emysqldriver'};
9325 my ($host, $port) = split(/:/, $host);
9326 my $cstr = "database=$prefix;host=$host";
9327 $cstr .= ";port=$port" if ($port);
9328 my $dbh = $drh->connect($cstr, $user, $pass, { });
9329 $dbh || return &text('sql_emysqlconnect', $drh->errstr);
9330 return wantarray ? ($dbh, $proto, $prefix, $args) : $dbh;
9332 elsif ($proto eq "postgresql") {
9333 # Connect to PostgreSQL with DBI
9334 my $drh = eval "use DBI; DBI->install_driver('Pg');";
9335 $drh || return $text{'sql_epostgresqldriver'};
9336 my ($host, $port) = split(/:/, $host);
9337 my $cstr = "dbname=$prefix;host=$host";
9338 $cstr .= ";port=$port" if ($port);
9339 my $dbh = $drh->connect($cstr, $user, $pass);
9340 $dbh || return &text('sql_epostgresqlconnect', $drh->errstr);
9341 return wantarray ? ($dbh, $proto, $prefix, $args) : $dbh;
9343 elsif ($proto eq "ldap") {
9344 # Connect with perl LDAP module
9345 eval "use Net::LDAP";
9346 $@ && return $text{'sql_eldapdriver'};
9347 my ($host, $port) = split(/:/, $host);
9348 my $scheme = $args->{'scheme'} || 'ldap';
9350 $port = $scheme eq 'ldaps' ? 636 : 389;
9352 my $ldap = Net::LDAP->new($host,
9354 'scheme' => $scheme);
9355 $ldap || return &text('sql_eldapconnect', $host);
9357 if ($args->{'tls'}) {
9358 # Switch to TLS mode
9359 eval { $mesg = $ldap->start_tls(); };
9360 if ($@ || !$mesg || $mesg->code) {
9361 return &text('sql_eldaptls',
9362 $@ ? $@ : $mesg ? $mesg->error : "Unknown error");
9365 # Login to the server
9367 $mesg = $ldap->bind(dn => $user, password => $pass);
9370 $mesg = $ldap->bind(dn => $user, anonymous => 1);
9372 if (!$mesg || $mesg->code) {
9373 return &text('sql_eldaplogin', $user,
9374 $mesg ? $mesg->error : "Unknown error");
9376 return wantarray ? ($ldap, $proto, $prefix, $args) : $ldap;
9379 return "Unknown protocol $proto";
9383 =head2 disconnect_userdb(string, &handle)
9385 Closes a handle opened by connect_userdb
9388 sub disconnect_userdb
9391 if ($str =~ /^(mysql|postgresql):/) {
9393 if (!$h->{'AutoCommit'}) {
9398 elsif ($str =~ /^ldap:/) {
9405 =head2 split_userdb_string(string)
9407 Converts a string like mysql://user:pass@host/db into separate parts
9410 sub split_userdb_string
9413 if ($str =~ /^([a-z]+):\/\/([^:]*):([^\@]*)\@([a-z0-9\.\-\_]+)\/([^\?]+)(\?(.*))?$/) {
9414 my ($proto, $user, $pass, $host, $prefix, $argstr) =
9415 ($1, $2, $3, $4, $5, $7);
9416 my %args = map { split(/=/, $_, 2) } split(/\&/, $argstr);
9417 return ($proto, $user, $pass, $host, $prefix, \%args);
9422 $done_web_lib_funcs = 1;