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 use vars qw($user_risk_level $loaded_theme_library $wait_for_input
20 $done_webmin_header $trust_unknown_referers $unsafe_index_cgi
21 %done_foreign_require $webmin_feedback_address
22 $user_skill_level $pragma_no_cache $foreign_args);
24 use vars qw($module_index_name $number_to_month_map $month_to_number_map
25 $umask_already $default_charset $licence_status $os_type
26 $licence_message $script_name $loaded_theme_oo_library
27 $done_web_lib_funcs $os_version $module_index_link
28 $called_from_webmin_core);
30 =head2 read_file(file, &hash, [&order], [lowercase], [split-char])
32 Fill the given hash reference with name=value pairs from a file. The required
35 =item file - The file to head, which must be text with each line like name=value
37 =item hash - The hash reference to add values read from the file to.
39 =item order - If given, an array reference to add names to in the order they were read
41 =item lowercase - If set to 1, names are converted to lower case
43 =item split-char - If set, names and values are split on this character instead of =
49 my $split = defined($_[4]) ? $_[4] : "=";
50 my $realfile = &translate_filename($_[0]);
51 &open_readfile(ARFILE, $_[0]) || return 0;
54 my $hash = index($_, "#");
55 my $eq = index($_, $split);
56 if ($hash != 0 && $eq >= 0) {
57 my $n = substr($_, 0, $eq);
58 my $v = substr($_, $eq+1);
60 $_[1]->{$_[3] ? lc($n) : $n} = $v;
61 push(@{$_[2]}, $n) if ($_[2]);
65 $main::read_file_missing{$realfile} = 0; # It exists now
66 if (defined($main::read_file_cache{$realfile})) {
67 %{$main::read_file_cache{$realfile}} = %{$_[1]};
72 =head2 read_file_cached(file, &hash, [&order], [lowercase], [split-char])
74 Like read_file, but reads from an in-memory cache if the file has already been
75 read in this Webmin script. Recommended, as it behaves exactly the same as
76 read_file, but can be much faster.
81 my $realfile = &translate_filename($_[0]);
82 if (defined($main::read_file_cache{$realfile})) {
84 %{$_[1]} = ( %{$_[1]}, %{$main::read_file_cache{$realfile}} );
87 elsif ($main::read_file_missing{$realfile}) {
88 # Doesn't exist, so don't re-try read
92 # Actually read the file
94 if (&read_file($_[0], \%d, $_[2], $_[3], $_[4])) {
95 %{$main::read_file_cache{$realfile}} = %d;
96 %{$_[1]} = ( %{$_[1]}, %d );
100 # Flag as non-existant
101 $main::read_file_missing{$realfile} = 1;
107 =head2 write_file(file, &hash, [join-char])
109 Write out the contents of a hash as name=value lines. The parameters are :
111 =item file - Full path to write to
113 =item hash - A hash reference containing names and values to output
115 =item join-char - If given, names and values are separated by this instead of =
121 my $join = defined($_[2]) ? $_[2] : "=";
122 my $realfile = &translate_filename($_[0]);
123 &read_file($_[0], \%old, \@order);
124 &open_tempfile(ARFILE, ">$_[0]");
125 foreach $k (@order) {
126 if (exists($_[1]->{$k})) {
127 (print ARFILE $k,$join,$_[1]->{$k},"\n") ||
128 &error(&text("efilewrite", $realfile, $!));
131 foreach $k (keys %{$_[1]}) {
132 if (!exists($old{$k})) {
133 (print ARFILE $k,$join,$_[1]->{$k},"\n") ||
134 &error(&text("efilewrite", $realfile, $!));
137 &close_tempfile(ARFILE);
138 if (defined($main::read_file_cache{$realfile})) {
139 %{$main::read_file_cache{$realfile}} = %{$_[1]};
141 if (defined($main::read_file_missing{$realfile})) {
142 $main::read_file_missing{$realfile} = 0;
146 =head2 html_escape(string)
148 Converts &, < and > codes in text to HTML entities, and returns the new string.
149 This should be used when including data read from other sources in HTML pages.
158 $tmp =~ s/\"/"/g;
159 $tmp =~ s/\'/'/g;
164 =head2 quote_escape(string, [only-quote])
166 Converts ' and " characters in a string into HTML entities, and returns it.
167 Useful for outputing HTML tag values.
172 my ($tmp, $only) = @_;
173 if ($tmp !~ /\&[a-zA-Z]+;/ && $tmp !~ /\&#/) {
174 # convert &, unless it is part of &#nnn; or &foo;
175 $tmp =~ s/&([^#])/&$1/g;
177 $tmp =~ s/&$/&/g;
178 $tmp =~ s/\"/"/g if ($only eq '' || $only eq '"');
179 $tmp =~ s/\'/'/g if ($only eq '' || $only eq "'");
183 =head2 tempname([filename])
185 Returns a mostly random temporary file name, typically under the /tmp/.webmin
186 directory. If filename is given, this will be the base name used. Otherwise
187 a unique name is selected randomly.
192 my $tmp_base = $gconfig{'tempdir_'.&get_module_name()} ?
193 $gconfig{'tempdir_'.&get_module_name()} :
194 $gconfig{'tempdir'} ? $gconfig{'tempdir'} :
195 $ENV{'TEMP'} ? $ENV{'TEMP'} :
196 $ENV{'TMP'} ? $ENV{'TMP'} :
197 -d "c:/temp" ? "c:/temp" : "/tmp/.webmin";
198 my $tmp_dir = -d $remote_user_info[7] && !$gconfig{'nohometemp'} ?
199 "$remote_user_info[7]/.tmp" :
200 @remote_user_info ? $tmp_base."-".$remote_user :
201 $< != 0 ? $tmp_base."-".getpwuid($<) :
203 if ($gconfig{'os_type'} eq 'windows' || $tmp_dir =~ /^[a-z]:/i) {
204 # On Windows system, just create temp dir if missing
206 mkdir($tmp_dir, 0755) ||
207 &error("Failed to create temp directory $tmp_dir : $!");
211 # On Unix systems, need to make sure temp dir is valid
213 while($tries++ < 10) {
214 my @st = lstat($tmp_dir);
215 last if ($st[4] == $< && (-d _) && ($st[2] & 0777) == 0755);
217 unlink($tmp_dir) || rmdir($tmp_dir) ||
218 system("/bin/rm -rf ".quotemeta($tmp_dir));
220 mkdir($tmp_dir, 0755) || next;
221 chown($<, $(, $tmp_dir);
222 chmod(0755, $tmp_dir);
225 my @st = lstat($tmp_dir);
226 &error("Failed to create temp directory $tmp_dir : uid=$st[4] mode=$st[2]");
230 if (defined($_[0]) && $_[0] !~ /\.\./) {
231 $rv = "$tmp_dir/$_[0]";
234 $main::tempfilecount++;
236 $rv = $tmp_dir."/".int(rand(1000000))."_".
237 $main::tempfilecount."_".$scriptname;
242 =head2 transname([filename])
244 Behaves exactly like tempname, but records the temp file for deletion when the
245 current Webmin script process exits.
250 my $rv = &tempname(@_);
251 push(@main::temporary_files, $rv);
255 =head2 trunc(string, maxlen)
257 Truncates a string to the shortest whole word less than or equal to the
258 given width. Useful for word wrapping.
263 if (length($_[0]) <= $_[1]) {
266 my $str = substr($_[0],0,$_[1]);
275 =head2 indexof(string, value, ...)
277 Returns the index of some value in an array of values, or -1 if it was not
283 for(my $i=1; $i <= $#_; $i++) {
284 if ($_[$i] eq $_[0]) { return $i - 1; }
289 =head2 indexoflc(string, value, ...)
291 Like indexof, but does a case-insensitive match
296 my $str = lc(shift(@_));
297 my @arr = map { lc($_) } @_;
298 return &indexof($str, @arr);
301 =head2 sysprint(handle, [string]+)
303 Outputs some strings to a file handle, but bypassing IO buffering. Can be used
304 as a replacement for print when writing to pipes or sockets.
309 my $fh = &callers_package($_[0]);
310 my $str = join('', @_[1..$#_]);
311 syswrite $fh, $str, length($str);
314 =head2 check_ipaddress(ip)
316 Check if some IPv4 address is properly formatted, returning 1 if so or 0 if not.
321 return $_[0] =~ /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/ &&
322 $1 >= 0 && $1 <= 255 &&
323 $2 >= 0 && $2 <= 255 &&
324 $3 >= 0 && $3 <= 255 &&
325 $4 >= 0 && $4 <= 255;
328 =head2 check_ip6address(ip)
330 Check if some IPv6 address is properly formatted, and returns 1 if so.
335 my @blocks = split(/:/, $_[0]);
336 return 0 if (@blocks == 0 || @blocks > 8);
338 # The address/netmask format is accepted. So we're looking for a "/" to isolate a possible netmask.
339 # After that, we delete the netmask to control the address only format, but we verify whether the netmask
340 # value is in [0;128].
342 my $where = index($blocks[$ib],"/");
345 my $b = substr($blocks[$ib],0,$where);
346 $m = substr($blocks[$ib],$where+1,length($blocks[$ib])-($where+1));
350 # The netmask must take its value in [0;128]
351 return 0 if ($m <0 || $m >128);
353 # Check the different blocks of the address : 16 bits block in hexa notation.
354 # Possibility of 1 empty block or 2 if the address begins with "::".
357 foreach $b (@blocks) {
358 return 0 if ($b ne "" && $b !~ /^[0-9a-f]{1,4}$/i);
359 $empty++ if ($b eq "");
361 return 0 if ($empty > 1 && !($_[0] =~ /^::/ && $empty == 2));
367 =head2 generate_icon(image, title, link, [href], [width], [height], [before-title], [after-title])
369 Prints HTML for an icon image. The parameters are :
371 =item image - URL for the image, like images/foo.gif
373 =item title - Text to appear under the icon
375 =item link - Optional destination for the icon's link
377 =item href - Other HTML attributes to be added to the <a href> for the link
379 =item width - Optional width of the icon
381 =item height - Optional height of the icon
383 =item before-title - HTML to appear before the title link, but which is not actually in the link
385 =item after-title - HTML to appear after the title link, but which is not actually in the link
390 &load_theme_library();
391 if (defined(&theme_generate_icon)) {
392 &theme_generate_icon(@_);
395 my $w = !defined($_[4]) ? "width=48" : $_[4] ? "width=$_[4]" : "";
396 my $h = !defined($_[5]) ? "height=48" : $_[5] ? "height=$_[5]" : "";
397 if ($tconfig{'noicons'}) {
399 print "$_[6]<a href=\"$_[2]\" $_[3]>$_[1]</a>$_[7]\n";
402 print "$_[6]$_[1]$_[7]\n";
406 print "<table border><tr><td width=48 height=48>\n",
407 "<a href=\"$_[2]\" $_[3]><img src=\"$_[0]\" alt=\"\" border=0 ",
408 "$w $h></a></td></tr></table>\n";
409 print "$_[6]<a href=\"$_[2]\" $_[3]>$_[1]</a>$_[7]\n";
412 print "<table border><tr><td width=48 height=48>\n",
413 "<img src=\"$_[0]\" alt=\"\" border=0 $w $h>",
414 "</td></tr></table>\n$_[6]$_[1]$_[7]\n";
420 Converts a string to a form ok for putting in a URL, using % escaping.
426 $rv =~ s/([^A-Za-z0-9])/sprintf("%%%2.2X", ord($1))/ge;
430 =head2 un_urlize(string)
432 Converts a URL-encoded string to it's original contents - the reverse of the
440 $rv =~ s/%(..)/pack("c",hex($1))/ge;
444 =head2 include(filename)
446 Read and output the contents of the given file.
452 open(INCLUDE, &translate_filename($_[0])) || return 0;
460 =head2 copydata(in-handle, out-handle)
462 Read from one file handle and write to another, until there is no more to read.
468 $in = &callers_package($in);
469 $out = &callers_package($out);
471 while(read($in, $buf, 1024) > 0) {
472 (print $out $buf) || return 0;
477 =head2 ReadParseMime([maximum], [&cbfunc, &cbargs])
479 Read data submitted via a POST request using the multipart/form-data coding,
480 and store it in the global %in hash. The optional parameters are :
482 =item maximum - If the number of bytes of input exceeds this number, stop reading and call error.
484 =item cbfunc - A function reference to call after reading each block of data.
486 =item cbargs - Additional parameters to the callback function.
491 my ($max, $cbfunc, $cbargs) = @_;
492 my ($boundary, $line, $foo, $name, $got, $file);
493 my $err = &text('readparse_max', $max);
494 $ENV{'CONTENT_TYPE'} =~ /boundary=(.*)$/ || &error($text{'readparse_enc'});
495 if ($ENV{'CONTENT_LENGTH'} && $max && $ENV{'CONTENT_LENGTH'} > $max) {
498 &$cbfunc(0, $ENV{'CONTENT_LENGTH'}, $file, @$cbargs) if ($cbfunc);
500 <STDIN>; # skip first boundary
503 # Read section headers
507 $got += length($line);
508 &$cbfunc($got, $ENV{'CONTENT_LENGTH'}, @$cbargs) if ($cbfunc);
509 if ($max && $got > $max) {
514 if ($line =~ /^(\S+):\s*(.*)$/) {
515 $header{$lastheader = lc($1)} = $2;
517 elsif ($line =~ /^\s+(.*)$/) {
518 $header{$lastheader} .= $line;
522 # Parse out filename and type
523 if ($header{'content-disposition'} =~ /^form-data(.*)/) {
525 while ($rest =~ /([a-zA-Z]*)=\"([^\"]*)\"(.*)/) {
530 $foo = $name . "_$1";
537 &error($text{'readparse_cdheader'});
539 if ($header{'content-type'} =~ /^([^\s;]+)/) {
540 $foo = $name . "_content_type";
543 $file = $in{$name."_filename"};
546 $in{$name} .= "\0" if (defined($in{$name}));
549 $got += length($line);
550 &$cbfunc($got, $ENV{'CONTENT_LENGTH'}, $file, @$cbargs)
552 if ($max && $got > $max) {
553 #print STDERR "over limit of $max\n";
558 &$cbfunc(-1, $ENV{'CONTENT_LENGTH'}, $file, @$cbargs)
563 $ptline =~ s/[^a-zA-Z0-9\-]/\./g;
564 if (index($line, $boundary) != -1) { last; }
567 chop($in{$name}); chop($in{$name});
568 if (index($line,"$boundary--") != -1) { last; }
570 &$cbfunc(-1, $ENV{'CONTENT_LENGTH'}, $file, @$cbargs) if ($cbfunc);
573 =head2 ReadParse([&hash], [method], [noplus])
575 Fills the given hash reference with CGI parameters, or uses the global hash
576 %in if none is given. Also sets the global variables $in and @in. The other
579 =item method - For use of this HTTP method, such as GET
581 =item noplus - Don't convert + in parameters to spaces.
586 my $a = $_[0] || \%in;
588 my $meth = $_[1] ? $_[1] : $ENV{'REQUEST_METHOD'};
590 if ($meth eq 'POST') {
591 my $clen = $ENV{'CONTENT_LENGTH'};
592 &read_fully(STDIN, \$in, $clen) == $clen ||
593 &error("Failed to read POST input : $!");
595 if ($ENV{'QUERY_STRING'}) {
596 if ($in) { $in .= "&".$ENV{'QUERY_STRING'}; }
597 else { $in = $ENV{'QUERY_STRING'}; }
599 @in = split(/\&/, $in);
600 foreach my $i (@in) {
601 my ($k, $v) = split(/=/, $i, 2);
606 $k =~ s/%(..)/pack("c",hex($1))/ge;
607 $v =~ s/%(..)/pack("c",hex($1))/ge;
608 $a->{$k} = defined($a->{$k}) ? $a->{$k}."\0".$v : $v;
612 =head2 read_fully(fh, &buffer, length)
614 Read data from some file handle up to the given length, even in the face
615 of partial reads. Reads the number of bytes read. Stores received data in the
616 string pointed to be the buffer reference.
621 my ($fh, $buf, $len) = @_;
622 $fh = &callers_package($fh);
625 my $r = read(STDIN, $$buf, $len-$got, $got);
632 =head2 read_parse_mime_callback(size, totalsize, upload-id)
634 Called by ReadParseMime as new data arrives from a form-data POST. Only updates
635 the file on every 1% change though. For internal use by the upload progress
639 sub read_parse_mime_callback
641 my ($size, $totalsize, $filename, $id) = @_;
642 return if ($gconfig{'no_upload_tracker'});
645 # Create the upload tracking directory - if running as non-root, this has to
646 # be under the user's home
649 my @uinfo = @remote_user_info ? @remote_user_info : getpwuid($<);
650 $vardir = "$uinfo[7]/.tmp";
653 $vardir = $ENV{'WEBMIN_VAR'};
656 &make_dir($vardir, 0755);
659 # Remove any upload.* files more than 1 hour old
660 if (!$main::read_parse_mime_callback_flushed) {
662 opendir(UPDIR, $vardir);
663 foreach my $f (readdir(UPDIR)) {
664 next if ($f !~ /^upload\./);
665 my @st = stat("$vardir/$f");
666 if ($st[9] < $now-3600) {
667 unlink("$vardir/$f");
671 $main::read_parse_mime_callback_flushed++;
674 # Only update file once per percent
675 my $upfile = "$vardir/upload.$id";
676 if ($totalsize && $size >= 0) {
677 my $pc = int(100 * $size / $totalsize);
678 if ($pc <= $main::read_parse_mime_callback_pc{$upfile}) {
681 $main::read_parse_mime_callback_pc{$upfile} = $pc;
685 &open_tempfile(UPFILE, ">$upfile");
686 print UPFILE $size,"\n";
687 print UPFILE $totalsize,"\n";
688 print UPFILE $filename,"\n";
689 &close_tempfile(UPFILE);
692 =head2 read_parse_mime_javascript(upload-id, [&fields])
694 Returns an onSubmit= Javascript statement to popup a window for tracking
695 an upload with the given ID. For internal use by the upload progress tracker.
698 sub read_parse_mime_javascript
700 my ($id, $fields) = @_;
701 return "" if ($gconfig{'no_upload_tracker'});
702 my $opener = "window.open(\"$gconfig{'webprefix'}/uptracker.cgi?id=$id&uid=$<\", \"uptracker\", \"toolbar=no,menubar=no,scrollbars=no,width=500,height=100\");";
704 my $if = join(" || ", map { "typeof($_) != \"undefined\" && $_.value != \"\"" } @$fields);
705 return "onSubmit='if ($if) { $opener }'";
708 return "onSubmit='$opener'";
712 =head2 PrintHeader(charset)
714 Outputs the HTTP headers for an HTML page. The optional charset parameter
715 can be used to set a character set. Normally this function is not called
716 directly, but is rather called by ui_print_header or header.
721 if ($pragma_no_cache || $gconfig{'pragma_no_cache'}) {
722 print "pragma: no-cache\n";
723 print "Expires: Thu, 1 Jan 1970 00:00:00 GMT\n";
724 print "Cache-Control: no-store, no-cache, must-revalidate\n";
725 print "Cache-Control: post-check=0, pre-check=0\n";
727 if (defined($_[0])) {
728 print "Content-type: text/html; Charset=$_[0]\n\n";
731 print "Content-type: text/html\n\n";
735 =head2 header(title, image, [help], [config], [nomodule], [nowebmin], [rightside], [head-stuff], [body-stuff], [below])
737 Outputs a Webmin HTML page header with a title, including HTTP headers. The
740 =item title - The text to show at the top of the page
742 =item image - An image to show instead of the title text. This is typically left blank.
744 =item help - If set, this is the name of a help page that will be linked to in the title.
746 =item config - If set to 1, the title will contain a link to the module's config page.
748 =item nomodule - If set to 1, there will be no link in the title section to the module's index.
750 =item nowebmin - If set to 1, there will be no link in the title section to the Webmin index.
752 =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.
754 =item head-stuff - HTML to be included in the <head> section of the page.
756 =item body-stuff - HTML attributes to be include in the <body> tag.
758 =item below - HTML to be displayed below the title. Typically this is used for application or server version information.
763 return if ($main::done_webmin_header++);
765 my $charset = defined($main::force_charset) ? $main::force_charset
767 &PrintHeader($charset);
768 &load_theme_library();
769 if (defined(&theme_header)) {
770 $module_name = &get_module_name();
774 print "<!doctype html public \"-//W3C//DTD HTML 3.2 Final//EN\">\n";
777 if (defined(&theme_prehead)) {
781 print "<meta http-equiv=\"Content-Type\" ",
782 "content=\"text/html; Charset="."e_escape($charset)."\">\n";
785 my $title = &get_html_title($_[0]);
786 print "<title>$title</title>\n";
787 print $_[7] if ($_[7]);
788 print &get_html_status_line(0);
790 print "$tconfig{'headhtml'}\n" if ($tconfig{'headhtml'});
791 if ($tconfig{'headinclude'}) {
792 print &read_file_contents(
793 "$theme_root_directory/$tconfig{'headinclude'}");
796 my $bgcolor = defined($tconfig{'cs_page'}) ? $tconfig{'cs_page'} :
797 defined($gconfig{'cs_page'}) ? $gconfig{'cs_page'} : "ffffff";
798 my $link = defined($tconfig{'cs_link'}) ? $tconfig{'cs_link'} :
799 defined($gconfig{'cs_link'}) ? $gconfig{'cs_link'} : "0000ee";
800 my $text = defined($tconfig{'cs_text'}) ? $tconfig{'cs_text'} :
801 defined($gconfig{'cs_text'}) ? $gconfig{'cs_text'} : "000000";
802 my $bgimage = defined($tconfig{'bgimage'}) ? "background=$tconfig{'bgimage'}"
804 my $dir = $current_lang_info->{'dir'} ? "dir=\"$current_lang_info->{'dir'}\""
806 print "<body bgcolor=#$bgcolor link=#$link vlink=#$link text=#$text ",
807 "$bgimage $tconfig{'inbody'} $dir $_[8]>\n";
808 if (defined(&theme_prebody)) {
811 my $hostname = &get_display_hostname();
812 my $version = &get_webmin_version();
813 my $prebody = $tconfig{'prebody'};
815 $prebody =~ s/%HOSTNAME%/$hostname/g;
816 $prebody =~ s/%VERSION%/$version/g;
817 $prebody =~ s/%USER%/$remote_user/g;
818 $prebody =~ s/%OS%/$os_type $os_version/g;
821 if ($tconfig{'prebodyinclude'}) {
823 open(INC, "$theme_root_directory/$tconfig{'prebodyinclude'}");
830 print $tconfig{'preheader'};
831 my %this_module_info = &get_module_info(&get_module_name());
832 print "<table class='header' width=100%><tr>\n";
833 if ($gconfig{'sysinfo'} == 2 && $remote_user) {
834 print "<td id='headln1' colspan=3 align=center>\n";
835 print &get_html_status_line(1);
836 print "</td></tr> <tr>\n";
838 print "<td id='headln2l' width=15% valign=top align=left>";
839 if ($ENV{'HTTP_WEBMIN_SERVERS'} && !$tconfig{'framed'}) {
840 print "<a href='$ENV{'HTTP_WEBMIN_SERVERS'}'>",
841 "$text{'header_servers'}</a><br>\n";
843 if (!$_[5] && !$tconfig{'noindex'}) {
844 my @avail = &get_available_module_infos(1);
845 my $nolo = $ENV{'ANONYMOUS_USER'} ||
846 $ENV{'SSL_USER'} || $ENV{'LOCAL_USER'} ||
847 $ENV{'HTTP_USER_AGENT'} =~ /webmin/i;
848 if ($gconfig{'gotoone'} && $main::session_id && @avail == 1 &&
850 print "<a href='$gconfig{'webprefix'}/session_login.cgi?logout=1'>",
851 "$text{'main_logout'}</a><br>";
853 elsif ($gconfig{'gotoone'} && @avail == 1 && !$nolo) {
854 print "<a href=$gconfig{'webprefix'}/switch_user.cgi>",
855 "$text{'main_switch'}</a><br>";
857 elsif (!$gconfig{'gotoone'} || @avail > 1) {
858 print "<a href='$gconfig{'webprefix'}/?cat=",
859 $this_module_info{'category'},
860 "'>$text{'header_webmin'}</a><br>\n";
863 if (!$_[4] && !$tconfig{'nomoduleindex'}) {
864 my $idx = $this_module_info{'index_link'};
865 my $mi = $module_index_link || "/".&get_module_name()."/$idx";
866 my $mt = $module_index_name || $text{'header_module'};
867 print "<a href=\"$gconfig{'webprefix'}$mi\">$mt</a><br>\n";
869 if (ref($_[2]) eq "ARRAY" && !$ENV{'ANONYMOUS_USER'} &&
870 !$tconfig{'nohelp'}) {
871 print &hlink($text{'header_help'}, $_[2]->[0], $_[2]->[1]),
874 elsif (defined($_[2]) && !$ENV{'ANONYMOUS_USER'} &&
875 !$tconfig{'nohelp'}) {
876 print &hlink($text{'header_help'}, $_[2]),"<br>\n";
879 my %access = &get_module_acl();
880 if (!$access{'noconfig'} && !$config{'noprefs'}) {
881 my $cprog = $user_module_config_directory ?
882 "uconfig.cgi" : "config.cgi";
883 print "<a href=\"$gconfig{'webprefix'}/$cprog?",
884 &get_module_name()."\">",
885 $text{'header_config'},"</a><br>\n";
890 # Title is a single image
891 print "<td id='headln2c' align=center width=70%>",
892 "<img alt=\"$_[0]\" src=\"$_[1]\"></td>\n";
896 my $ts = defined($tconfig{'titlesize'}) ?
897 $tconfig{'titlesize'} : "+2";
898 print "<td id='headln2c' align=center width=70%>",
899 ($ts ? "<font size=$ts>" : ""),$_[0],
900 ($ts ? "</font>" : "");
901 print "<br>$_[9]\n" if ($_[9]);
904 print "<td id='headln2r' width=15% valign=top align=right>";
906 print "</td></tr></table>\n";
907 print $tconfig{'postheader'};
911 =head2 get_html_title(title)
913 Returns the full string to appear in the HTML <title> block.
920 my $os_type = $gconfig{'real_os_type'} || $gconfig{'os_type'};
921 my $os_version = $gconfig{'real_os_version'} || $gconfig{'os_version'};
922 my $host = &get_display_hostname();
923 if ($gconfig{'sysinfo'} == 1 && $remote_user) {
924 $title = sprintf "%s : %s on %s (%s %s)\n",
925 $msg, $remote_user, $host,
926 $os_type, $os_version;
928 elsif ($gconfig{'sysinfo'} == 4 && $remote_user) {
929 $title = sprintf "%s on %s (%s %s)\n",
931 $os_type, $os_version;
936 if ($gconfig{'showlogin'} && $remote_user) {
937 $title = $remote_user.($title ? " : ".$title : "");
939 if ($gconfig{'showhost'}) {
940 $title = $host.($title ? " : ".$title : "");
945 =head2 get_html_framed_title
947 Returns the title text for a framed theme main page.
950 sub get_html_framed_title
953 my $os_type = $gconfig{'real_os_type'} || $gconfig{'os_type'};
954 my $os_version = $gconfig{'real_os_version'} || $gconfig{'os_version'};
956 if (($gconfig{'sysinfo'} == 4 || $gconfig{'sysinfo'} == 1) && $remote_user) {
957 # Alternate title mode requested
958 $title = sprintf "%s on %s (%s %s)\n",
959 $remote_user, &get_display_hostname(),
960 $os_type, $os_version;
963 # Title like 'Webmin x.yy on hostname (Linux 6)'
964 if ($os_version eq "*") {
968 $ostr = "$os_type $os_version";
970 my $host = &get_display_hostname();
971 my $ver = &get_webmin_version();
972 $title = $gconfig{'nohostname'} ? $text{'main_title2'} :
973 $gconfig{'showhost'} ? &text('main_title3', $ver, $ostr) :
974 &text('main_title', $ver, $host, $ostr);
975 if ($gconfig{'showlogin'}) {
976 $title = $remote_user.($title ? " : ".$title : "");
978 if ($gconfig{'showhost'}) {
979 $title = $host.($title ? " : ".$title : "");
985 =head2 get_html_status_line(text-only)
987 Returns HTML for a script block that sets the status line, or if text-only
988 is set to 1, just return the status line text.
991 sub get_html_status_line
994 if (($gconfig{'sysinfo'} != 0 || !$remote_user) && !$textonly) {
995 # Disabled in this mode
998 my $os_type = $gconfig{'real_os_type'} || $gconfig{'os_type'};
999 my $os_version = $gconfig{'real_os_version'} || $gconfig{'os_version'};
1000 my $line = &text('header_statusmsg',
1001 ($ENV{'ANONYMOUS_USER'} ? "Anonymous user"
1003 ($ENV{'SSL_USER'} ? " (SSL certified)" :
1004 $ENV{'LOCAL_USER'} ? " (Local user)" : ""),
1005 $text{'programname'},
1006 &get_webmin_version(),
1007 &get_display_hostname(),
1008 $os_type.($os_version eq "*" ? "" :" $os_version"));
1013 $line =~ s/\r|\n//g;
1014 return "<script language=JavaScript type=text/javascript>\n".
1015 "defaultStatus=\""."e_escape($line)."\";\n".
1020 =head2 popup_header([title], [head-stuff], [body-stuff], [no-body])
1022 Outputs a page header, suitable for a popup window. If no title is given,
1023 absolutely no decorations are output. Also useful in framesets. The parameters
1026 =item title - Title text for the popup window.
1028 =item head-stuff - HTML to appear in the <head> section.
1030 =item body-stuff - HTML attributes to be include in the <body> tag.
1032 =item no-body - If set to 1, don't generate a body tag
1037 return if ($main::done_webmin_header++);
1039 my $charset = defined($main::force_charset) ? $main::force_charset
1041 &PrintHeader($charset);
1042 &load_theme_library();
1043 if (defined(&theme_popup_header)) {
1044 &theme_popup_header(@_);
1047 print "<!doctype html public \"-//W3C//DTD HTML 3.2 Final//EN\">\n";
1050 if (defined(&theme_popup_prehead)) {
1051 &theme_popup_prehead(@_);
1053 print "<title>$_[0]</title>\n";
1055 print "$tconfig{'headhtml'}\n" if ($tconfig{'headhtml'});
1056 if ($tconfig{'headinclude'}) {
1057 print &read_file_contents(
1058 "$theme_root_directory/$tconfig{'headinclude'}");
1061 my $bgcolor = defined($tconfig{'cs_page'}) ? $tconfig{'cs_page'} :
1062 defined($gconfig{'cs_page'}) ? $gconfig{'cs_page'} : "ffffff";
1063 my $link = defined($tconfig{'cs_link'}) ? $tconfig{'cs_link'} :
1064 defined($gconfig{'cs_link'}) ? $gconfig{'cs_link'} : "0000ee";
1065 my $text = defined($tconfig{'cs_text'}) ? $tconfig{'cs_text'} :
1066 defined($gconfig{'cs_text'}) ? $gconfig{'cs_text'} : "000000";
1067 my $bgimage = defined($tconfig{'bgimage'}) ? "background=$tconfig{'bgimage'}"
1070 print "<body id='popup' bgcolor=#$bgcolor link=#$link vlink=#$link ",
1071 "text=#$text $bgimage $tconfig{'inbody'} $_[2]>\n";
1072 if (defined(&theme_popup_prebody)) {
1073 &theme_popup_prebody(@_);
1078 =head2 footer([page, name]+, [noendbody])
1080 Outputs the footer for a Webmin HTML page, possibly with links back to other
1081 pages. The links are specified by pairs of parameters, the first of which is
1082 a link destination, and the second the link text. For example :
1084 footer('/', 'Webmin index', '', 'Module menu');
1089 &load_theme_library();
1090 my %this_module_info = &get_module_info(&get_module_name());
1091 if (defined(&theme_footer)) {
1092 $module_name = &get_module_name(); # Old themes use these
1093 %module_info = %this_module_info;
1097 for(my $i=0; $i+1<@_; $i+=2) {
1099 if ($url ne '/' || !$tconfig{'noindex'}) {
1101 $url = "/?cat=$this_module_info{'category'}";
1103 elsif ($url eq '' && &get_module_name()) {
1104 $url = "/".&get_module_name()."/".
1105 $this_module_info{'index_link'};
1107 elsif ($url =~ /^\?/ && &get_module_name()) {
1108 $url = "/".&get_module_name()."/$url";
1110 $url = "$gconfig{'webprefix'}$url" if ($url =~ /^\//);
1112 print "<a href=\"$url\"><img alt=\"<-\" align=middle border=0 src=$gconfig{'webprefix'}/images/left.gif></a>\n";
1117 print " <a href=\"$url\">",&text('main_return', $_[$i+1]),"</a>\n";
1122 my $postbody = $tconfig{'postbody'};
1124 my $hostname = &get_display_hostname();
1125 my $version = &get_webmin_version();
1126 my $os_type = $gconfig{'real_os_type'} ||
1127 $gconfig{'os_type'};
1128 my $os_version = $gconfig{'real_os_version'} ||
1129 $gconfig{'os_version'};
1130 $postbody =~ s/%HOSTNAME%/$hostname/g;
1131 $postbody =~ s/%VERSION%/$version/g;
1132 $postbody =~ s/%USER%/$remote_user/g;
1133 $postbody =~ s/%OS%/$os_type $os_version/g;
1134 print "$postbody\n";
1136 if ($tconfig{'postbodyinclude'}) {
1138 open(INC, "$theme_root_directory/$tconfig{'postbodyinclude'}");
1144 if (defined(&theme_postbody)) {
1145 &theme_postbody(@_);
1147 print "</body></html>\n";
1151 =head2 popup_footer([no-body])
1153 Outputs html for a footer for a popup window, started by popup_header.
1158 &load_theme_library();
1159 if (defined(&theme_popup_footer)) {
1160 &theme_popup_footer(@_);
1169 =head2 load_theme_library
1171 Immediately loads the current theme's theme.pl file. Not generally useful for
1172 most module developers, as this is called automatically by the header function.
1175 sub load_theme_library
1177 return if (!$current_theme || $loaded_theme_library++);
1178 for(my $i=0; $i<@theme_root_directories; $i++) {
1179 if ($theme_configs[$i]->{'functions'}) {
1180 do $theme_root_directories[$i]."/".
1181 $theme_configs[$i]->{'functions'};
1186 =head2 redirect(url)
1188 Output HTTP headers to redirect the browser to some page. The url parameter is
1189 typically a relative URL like index.cgi or list_users.cgi.
1194 my $port = $ENV{'SERVER_PORT'} == 443 && uc($ENV{'HTTPS'}) eq "ON" ? "" :
1195 $ENV{'SERVER_PORT'} == 80 && uc($ENV{'HTTPS'}) ne "ON" ? "" :
1196 ":$ENV{'SERVER_PORT'}";
1197 my $prot = uc($ENV{'HTTPS'}) eq "ON" ? "https" : "http";
1198 my $wp = $gconfig{'webprefixnoredir'} ? undef : $gconfig{'webprefix'};
1200 if ($_[0] =~ /^(http|https|ftp|gopher):/) {
1201 # Absolute URL (like http://...)
1204 elsif ($_[0] =~ /^\//) {
1205 # Absolute path (like /foo/bar.cgi)
1206 $url = "$prot://$ENV{'SERVER_NAME'}$port$wp$_[0]";
1208 elsif ($ENV{'SCRIPT_NAME'} =~ /^(.*)\/[^\/]*$/) {
1209 # Relative URL (like foo.cgi)
1210 $url = "$prot://$ENV{'SERVER_NAME'}$port$wp$1/$_[0]";
1213 $url = "$prot://$ENV{'SERVER_NAME'}$port/$wp$_[0]";
1215 &load_theme_library();
1216 if (defined(&theme_redirect)) {
1217 $module_name = &get_module_name(); # Old themes use these
1218 %module_info = &get_module_info($module_name);
1219 &theme_redirect($_[0], $url);
1222 print "Location: $url\n\n";
1226 =head2 kill_byname(name, signal)
1228 Finds a process whose command line contains the given name (such as httpd), and
1229 sends some signal to it. The signal can be numeric (like 9) or named
1235 my @pids = &find_byname($_[0]);
1236 return scalar(@pids) if (&is_readonly_mode());
1237 &webmin_debug_log('KILL', "signal=$_[1] name=$_[0]")
1238 if ($gconfig{'debug_what_procs'});
1239 if (@pids) { kill($_[1], @pids); return scalar(@pids); }
1243 =head2 kill_byname_logged(name, signal)
1245 Like kill_byname, but also logs the killing.
1248 sub kill_byname_logged
1250 my @pids = &find_byname($_[0]);
1251 return scalar(@pids) if (&is_readonly_mode());
1252 if (@pids) { &kill_logged($_[1], @pids); return scalar(@pids); }
1256 =head2 find_byname(name)
1258 Finds processes searching for the given name in their command lines, and
1259 returns a list of matching PIDs.
1264 if ($gconfig{'os_type'} =~ /-linux$/ && -r "/proc/$$/cmdline") {
1265 # Linux with /proc filesystem .. use cmdline files, as this is
1266 # faster than forking
1268 opendir(PROCDIR, "/proc");
1269 foreach my $f (readdir(PROCDIR)) {
1270 if ($f eq int($f) && $f != $$) {
1271 my $line = &read_file_contents("/proc/$f/cmdline");
1272 if ($line =~ /$_[0]/) {
1281 if (&foreign_check("proc")) {
1282 # Call the proc module
1283 &foreign_require("proc", "proc-lib.pl");
1284 if (defined(&proc::list_processes)) {
1285 my @procs = &proc::list_processes();
1287 foreach my $p (@procs) {
1288 if ($p->{'args'} =~ /$_[0]/) {
1289 push(@pids, $p->{'pid'});
1292 @pids = grep { $_ != $$ } @pids;
1297 # Fall back to running a command
1299 $cmd = $gconfig{'find_pid_command'};
1300 $cmd =~ s/NAME/"$_[0]"/g;
1301 $cmd = &translate_command($cmd);
1302 @pids = split(/\n/, `($cmd) <$null_file 2>$null_file`);
1303 @pids = grep { $_ != $$ } @pids;
1307 =head2 error([message]+)
1309 Display an error message and exit. This should be used by CGI scripts that
1310 encounter a fatal error or invalid user input to notify users of the problem.
1311 If error_setup has been called, the displayed error message will be prefixed
1312 by the message setup using that function.
1317 my $msg = join("", @_);
1318 $msg =~ s/<[^>]*>//g;
1319 if (!$main::error_must_die) {
1320 print STDERR "Error: ",$msg,"\n";
1322 &load_theme_library();
1323 if ($main::error_must_die) {
1324 if ($gconfig{'error_stack'}) {
1325 print STDERR "Error: ",$msg,"\n";
1326 for(my $i=0; my @stack = caller($i); $i++) {
1327 print STDERR "File: $stack[1] Line: $stack[2] ",
1328 "Function: $stack[3]\n";
1333 elsif (!$ENV{'REQUEST_METHOD'}) {
1334 # Show text-only error
1335 print STDERR "$text{'error'}\n";
1336 print STDERR "-----\n";
1337 print STDERR ($main::whatfailed ? "$main::whatfailed : " : ""),
1339 print STDERR "-----\n";
1340 if ($gconfig{'error_stack'}) {
1342 print STDERR $text{'error_stack'},"\n";
1343 for(my $i=0; my @stack = caller($i); $i++) {
1344 print STDERR &text('error_stackline',
1345 $stack[1], $stack[2], $stack[3]),"\n";
1350 elsif (defined(&theme_error)) {
1354 &header($text{'error'}, "");
1356 print "<h3>",($main::whatfailed ? "$main::whatfailed : " : ""),
1358 if ($gconfig{'error_stack'}) {
1360 print "<h3>$text{'error_stack'}</h3>\n";
1362 print "<tr> <td><b>$text{'error_file'}</b></td> ",
1363 "<td><b>$text{'error_line'}</b></td> ",
1364 "<td><b>$text{'error_sub'}</b></td> </tr>\n";
1365 for($i=0; my @stack = caller($i); $i++) {
1367 print "<td>$stack[1]</td>\n";
1368 print "<td>$stack[2]</td>\n";
1369 print "<td>$stack[3]</td>\n";
1375 if ($ENV{'HTTP_REFERER'} && $main::completed_referers_check) {
1376 &footer($ENV{'HTTP_REFERER'}, $text{'error_previous'});
1382 &unlock_all_files();
1383 &cleanup_tempnames();
1387 =head2 popup_error([message]+)
1389 This function is almost identical to error, but displays the message with HTML
1390 headers suitable for a popup window.
1395 &load_theme_library();
1396 if ($main::error_must_die) {
1399 elsif (defined(&theme_popup_error)) {
1400 &theme_popup_error(@_);
1403 &popup_header($text{'error'}, "");
1404 print "<h3>",($main::whatfailed ? "$main::whatfailed : " : ""),@_,"</h3>\n";
1407 &unlock_all_files();
1408 &cleanup_tempnames();
1412 =head2 error_setup(message)
1414 Registers a message to be prepended to all error messages displayed by the
1420 $main::whatfailed = $_[0];
1423 =head2 wait_for(handle, regexp, regexp, ...)
1425 Reads from the input stream until one of the regexps matches, and returns the
1426 index of the matching regexp, or -1 if input ended before any matched. This is
1427 very useful for parsing the output of interactive programs, and can be used with
1428 a two-way pipe to feed input to a program in response to output matched by
1431 If the matching regexp contains bracketed sub-expressions, their values will
1432 be placed in the global array @matches, indexed starting from 1. You cannot
1433 use the Perl variables $1, $2 and so on to capture matches.
1437 $rv = wait_for($loginfh, "username:");
1439 error("Didn't get username prompt");
1441 print $loginfh "joe\n";
1442 $rv = wait_for($loginfh, "password:");
1444 error("Didn't get password prompt");
1446 print $loginfh "smeg\n";
1451 my ($c, $i, $sw, $rv, $ha);
1452 undef($wait_for_input);
1453 if ($wait_for_debug) {
1454 print STDERR "wait_for(",join(",", @_),")\n";
1456 $ha = &callers_package($_[0]);
1457 if ($wait_for_debug) {
1458 print STDERR "File handle=$ha fd=",fileno($ha),"\n";
1463 " if ((\$c = getc(\$ha)) eq \"\") { return -1; }\n".
1464 " \$wait_for_input .= \$c;\n";
1465 if ($wait_for_debug) {
1466 $codes .= "print STDERR \$wait_for_input,\"\\n\";";
1468 for($i=1; $i<@_; $i++) {
1469 $sw = $i>1 ? "elsif" : "if";
1470 $codes .= " $sw (\$wait_for_input =~ /$_[$i]/i) { \$hit = $i-1; }\n";
1473 " if (defined(\$hit)) {\n".
1474 " \@matches = (-1, \$1, \$2, \$3, \$4, \$5, \$6, \$7, \$8, \$9);\n".
1480 &error("wait_for error : $@\n");
1485 =head2 fast_wait_for(handle, string, string, ...)
1487 This function behaves very similar to wait_for (documented above), but instead
1488 of taking regular expressions as parameters, it takes strings. As soon as the
1489 input contains one of them, it will return the index of the matching string.
1490 If the input ends before any match, it returns -1.
1495 my ($inp, $maxlen, $ha, $i, $c, $inpl);
1496 for($i=1; $i<@_; $i++) {
1497 $maxlen = length($_[$i]) > $maxlen ? length($_[$i]) : $maxlen;
1501 if (($c = getc($ha)) eq "") {
1502 &error("fast_wait_for read error : $!");
1505 if (length($inp) > $maxlen) {
1506 $inp = substr($inp, length($inp)-$maxlen);
1508 $inpl = length($inp);
1509 for($i=1; $i<@_; $i++) {
1510 if ($_[$i] eq substr($inp, $inpl-length($_[$i]))) {
1517 =head2 has_command(command)
1519 Returns the full path to the executable if some command is in the path, or
1520 undef if not found. If the given command is already an absolute path and
1521 exists, then the same path will be returned.
1526 if (!$_[0]) { return undef; }
1527 if (exists($main::has_command_cache{$_[0]})) {
1528 return $main::has_command_cache{$_[0]};
1531 my $slash = $gconfig{'os_type'} eq 'windows' ? '\\' : '/';
1532 if ($_[0] =~ /^\// || $_[0] =~ /^[a-z]:[\\\/]/i) {
1533 # Absolute path given - just use it
1534 my $t = &translate_filename($_[0]);
1535 $rv = (-x $t && !-d _) ? $_[0] : undef;
1538 # Check each directory in the path
1540 foreach my $d (split($path_separator, $ENV{'PATH'})) {
1541 next if ($donedir{$d}++);
1542 $d =~ s/$slash$// if ($d ne $slash);
1543 my $t = &translate_filename("$d/$_[0]");
1544 if (-x $t && !-d _) {
1545 $rv = $d.$slash.$_[0];
1548 if ($gconfig{'os_type'} eq 'windows') {
1549 foreach my $sfx (".exe", ".com", ".bat") {
1550 my $t = &translate_filename("$d/$_[0]").$sfx;
1551 if (-r $t && !-d _) {
1552 $rv = $d.$slash.$_[0].$sfx;
1559 $main::has_command_cache{$_[0]} = $rv;
1563 =head2 make_date(seconds, [date-only], [fmt])
1565 Converts a Unix date/time in seconds to a human-readable form, by default
1566 formatted like dd/mmm/yyyy hh:mm:ss. Parameters are :
1568 =item seconds - Unix time is seconds to convert.
1570 =item date-only - If set to 1, exclude the time from the returned string.
1572 =item fmt - Optional, one of dd/mon/yyyy, dd/mm/yyyy, mm/dd/yyyy or yyyy/mm/dd
1577 my ($secs, $only, $fmt) = @_;
1578 my @tm = localtime($secs);
1581 $fmt = $gconfig{'dateformat'} || 'dd/mon/yyyy';
1583 if ($fmt eq 'dd/mon/yyyy') {
1584 $date = sprintf "%2.2d/%s/%4.4d",
1585 $tm[3], $text{"smonth_".($tm[4]+1)}, $tm[5]+1900;
1587 elsif ($fmt eq 'dd/mm/yyyy') {
1588 $date = sprintf "%2.2d/%2.2d/%4.4d", $tm[3], $tm[4]+1, $tm[5]+1900;
1590 elsif ($fmt eq 'mm/dd/yyyy') {
1591 $date = sprintf "%2.2d/%2.2d/%4.4d", $tm[4]+1, $tm[3], $tm[5]+1900;
1593 elsif ($fmt eq 'yyyy/mm/dd') {
1594 $date = sprintf "%4.4d/%2.2d/%2.2d", $tm[5]+1900, $tm[4]+1, $tm[3];
1596 elsif ($fmt eq 'd. mon yyyy') {
1597 $date = sprintf "%d. %s %4.4d",
1598 $tm[3], $text{"smonth_".($tm[4]+1)}, $tm[5]+1900;
1600 elsif ($fmt eq 'dd.mm.yyyy') {
1601 $date = sprintf "%2.2d.%2.2d.%4.4d", $tm[3], $tm[4]+1, $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];
1607 $date .= sprintf " %2.2d:%2.2d", $tm[2], $tm[1];
1612 =head2 file_chooser_button(input, type, [form], [chroot], [addmode])
1614 Return HTML for a button that pops up a file chooser when clicked, and places
1615 the selected filename into another HTML field. The parameters are :
1617 =item input - Name of the form field to store the filename in.
1619 =item type - 0 for file or directory chooser, or 1 for directory only.
1621 =item form - Index of the form containing the button.
1623 =item chroot - If set to 1, the chooser will be limited to this directory.
1625 =item addmode - If set to 1, the selected filename will be appended to the text box instead of replacing it's contents.
1628 sub file_chooser_button
1630 return &theme_file_chooser_button(@_)
1631 if (defined(&theme_file_chooser_button));
1632 my $form = defined($_[2]) ? $_[2] : 0;
1633 my $chroot = defined($_[3]) ? $_[3] : "/";
1634 my $add = int($_[4]);
1635 my ($w, $h) = (400, 300);
1636 if ($gconfig{'db_sizefile'}) {
1637 ($w, $h) = split(/x/, $gconfig{'db_sizefile'});
1639 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";
1642 =head2 popup_window_button(url, width, height, scrollbars?, &field-mappings)
1644 Returns HTML for a button that will popup a chooser window of some kind. The
1647 =item url - Base URL of the popup window's contents
1649 =item width - Width of the window in pixels
1651 =item height - Height in pixels
1653 =item scrollbars - Set to 1 if the window should have scrollbars
1655 The field-mappings parameter is an array ref of array refs containing
1657 =item - Attribute to assign field to in the popup window
1659 =item - Form field name
1661 =item - CGI parameter to URL for value, if any
1664 sub popup_window_button
1666 return &theme_popup_window_button(@_) if (defined(&theme_popup_window_button));
1667 my ($url, $w, $h, $scroll, $fields) = @_;
1668 my $scrollyn = $scroll ? "yes" : "no";
1669 my $rv = "<input type=button onClick='";
1670 foreach my $m (@$fields) {
1671 $rv .= "$m->[0] = form.$m->[1]; ";
1673 my $sep = $url =~ /\?/ ? "&" : "?";
1674 $rv .= "chooser = window.open(\"$url\"";
1675 foreach my $m (@$fields) {
1677 $rv .= "+\"$sep$m->[2]=\"+escape($m->[0].value)";
1681 $rv .= ", \"chooser\", \"toolbar=no,menubar=no,scrollbars=$scrollyn,resizable=yes,width=$w,height=$h\"); ";
1682 foreach my $m (@$fields) {
1683 $rv .= "chooser.$m->[0] = $m->[0]; ";
1684 $rv .= "window.$m->[0] = $m->[0]; ";
1686 $rv .= "' value=\"...\">";
1690 =head2 read_acl(&user-module-hash, &user-list-hash)
1692 Reads the Webmin acl file into the given hash references. The first is indexed
1693 by a combined key of username,module , with the value being set to 1 when
1694 the user has access to that module. The second is indexed by username, with
1695 the value being an array ref of allowed modules.
1697 This function is deprecated in favour of foreign_available, which performs a
1698 more comprehensive check of module availability.
1703 if (!%main::acl_hash_cache) {
1704 # Read from local files
1706 open(ACL, &acl_filename());
1708 if (/^([^:]+):\s*(.*)/) {
1710 my @mods = split(/\s+/, $2);
1711 foreach my $m (@mods) {
1712 $main::acl_hash_cache{$user,$m}++;
1714 $main::acl_array_cache{$user} = \@mods;
1720 my $userdb = &get_userdb_string();
1721 my ($dbh, $proto) = $userdb ? &connect_userdb($userdb) : ( );
1723 if ($proto eq "mysql" || $proto eq "postgresql") {
1724 # Select usernames and modules from SQL DB
1725 my $cmd = $dbh->prepare("select webmin_user.name,webmin_user_attr.value from webmin_user,webmin_user_attr where webmin_user.id = webmin_user_attr.id and webmin_user_attr.attr = 'modules'");
1726 if ($cmd && $cmd->execute()) {
1727 while(my ($user, $mods) = $cmd->fetchrow()) {
1728 my @mods = split(/\s+/, $mods);
1729 foreach my $m (@mods) {
1730 $main::acl_hash_cache{$user,
1733 $main::acl_array_cache{$user} = \@mods;
1736 $cmd->finish() if ($cmd);
1738 elsif ($proto eq "ldap") {
1739 # XXX read from LDAP
1741 &disconnect_userdb($userdb, $dbh);
1744 if ($_[0]) { %{$_[0]} = %main::acl_hash_cache; }
1745 if ($_[1]) { %{$_[1]} = %main::acl_array_cache; }
1750 Returns the file containing the webmin ACL, which is usually
1751 /etc/webmin/webmin.acl.
1756 return "$config_directory/webmin.acl";
1761 Does nothing, but kept around for compatability.
1768 =head2 get_miniserv_config(&hash)
1770 Reads the Webmin webserver's (miniserv.pl) configuration file, usually located
1771 at /etc/webmin/miniserv.conf, and stores its names and values in the given
1775 sub get_miniserv_config
1777 return &read_file_cached(
1778 $ENV{'MINISERV_CONFIG'} || "$config_directory/miniserv.conf", $_[0]);
1781 =head2 put_miniserv_config(&hash)
1783 Writes out the Webmin webserver configuration file from the contents of
1784 the given hash ref. This should be initially populated by get_miniserv_config,
1787 get_miniserv_config(\%miniserv);
1788 $miniserv{'port'} = 10005;
1789 put_miniserv_config(\%miniserv);
1793 sub put_miniserv_config
1795 &write_file($ENV{'MINISERV_CONFIG'} || "$config_directory/miniserv.conf",
1799 =head2 restart_miniserv([nowait])
1801 Kill the old miniserv process and re-start it, then optionally waits for
1802 it to restart. This will apply all configuration settings.
1805 sub restart_miniserv
1808 return undef if (&is_readonly_mode());
1810 &get_miniserv_config(\%miniserv) || return;
1813 if ($gconfig{'os_type'} ne 'windows') {
1814 # On Unix systems, we can restart with a signal
1815 my ($pid, $addr, $i);
1816 $miniserv{'inetd'} && return;
1817 my @oldst = stat($miniserv{'pidfile'});
1818 $pid = $ENV{'MINISERV_PID'};
1820 open(PID, $miniserv{'pidfile'}) ||
1821 &error("Failed to open PID file $miniserv{'pidfile'}");
1824 $pid || &error("Invalid PID file $miniserv{'pidfile'}");
1827 # Just signal miniserv to restart
1828 &kill_logged('HUP', $pid) || &error("Incorrect Webmin PID $pid");
1830 # Wait till new PID is written, indicating a restart
1831 for($i=0; $i<60; $i++) {
1833 my @newst = stat($miniserv{'pidfile'});
1834 last if ($newst[9] != $oldst[9]);
1836 $i < 60 || &error("Webmin server did not write new PID file");
1838 ## Totally kill the process and re-run it
1839 #$SIG{'TERM'} = 'IGNORE';
1840 #&kill_logged('TERM', $pid);
1841 #&system_logged("$config_directory/start >/dev/null 2>&1 </dev/null");
1844 # On Windows, we need to use the flag file
1845 open(TOUCH, ">$miniserv{'restartflag'}");
1850 # wait for miniserv to come back up
1851 $addr = inet_aton($miniserv{'bind'} ? $miniserv{'bind'} : "127.0.0.1");
1853 for($i=0; $i<20; $i++) {
1855 socket(STEST, PF_INET, SOCK_STREAM, getprotobyname("tcp"));
1856 my $rv = connect(STEST,
1857 pack_sockaddr_in($miniserv{'port'}, $addr));
1859 last if ($rv && ++$ok >= 2);
1861 $i < 20 || &error("Failed to restart Webmin server!");
1865 =head2 reload_miniserv
1867 Sends a USR1 signal to the miniserv process, telling it to read-read it's
1868 configuration files. Not all changes will be applied though, such as the
1869 IP addresses and ports to accept connections on.
1874 return undef if (&is_readonly_mode());
1876 &get_miniserv_config(\%miniserv) || return;
1878 if ($gconfig{'os_type'} ne 'windows') {
1879 # Send a USR1 signal to re-read the config
1880 my ($pid, $addr, $i);
1881 $miniserv{'inetd'} && return;
1882 $pid = $ENV{'MINISERV_PID'};
1884 open(PID, $miniserv{'pidfile'}) ||
1885 &error("Failed to open PID file $miniserv{'pidfile'}");
1888 $pid || &error("Invalid PID file $miniserv{'pidfile'}");
1890 &kill_logged('USR1', $pid) || &error("Incorrect Webmin PID $pid");
1892 # Make sure this didn't kill Webmin!
1894 if (!kill(0, $pid)) {
1895 print STDERR "USR1 signal killed Webmin - restarting\n";
1896 &system_logged("$config_directory/start >/dev/null 2>&1 </dev/null");
1900 # On Windows, we need to use the flag file
1901 open(TOUCH, ">$miniserv{'reloadflag'}");
1906 =head2 check_os_support(&minfo, [os-type, os-version], [api-only])
1908 Returns 1 if some module is supported on the current operating system, or the
1909 OS supplies as parameters. The parameters are :
1911 =item minfo - A hash ref of module information, as returned by get_module_info
1913 =item os-type - The Webmin OS code to use instead of the system's real OS, such as redhat-linux
1915 =item os-version - The Webmin OS version to use, such as 13.0
1917 =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.
1920 sub check_os_support
1922 my $oss = $_[0]->{'os_support'};
1923 if ($_[3] && $oss && $_[0]->{'api_os_support'}) {
1924 # May provide usable API
1925 $oss .= " ".$_[0]->{'api_os_support'};
1927 if ($_[0]->{'nozone'} && &running_in_zone()) {
1928 # Not supported in a Solaris Zone
1931 if ($_[0]->{'novserver'} && &running_in_vserver()) {
1932 # Not supported in a Linux Vserver
1935 if ($_[0]->{'noopenvz'} && &running_in_openvz()) {
1936 # Not supported in an OpenVZ container
1939 return 1 if (!$oss || $oss eq '*');
1940 my $osver = $_[2] || $gconfig{'os_version'};
1941 my $ostype = $_[1] || $gconfig{'os_type'};
1944 my ($os, $ver, $codes);
1945 my ($neg) = ($oss =~ s/^!//); # starts with !
1946 $anyneg++ if ($neg);
1947 if ($oss =~ /^([^\/\s]+)\/([^\{\s]+)\{([^\}]*)\}\s*(.*)$/) {
1949 $os = $1; $ver = $2; $codes = $3; $oss = $4;
1951 elsif ($oss =~ /^([^\/\s]+)\/([^\/\s]+)\s*(.*)$/) {
1953 $os = $1; $ver = $2; $oss = $3;
1955 elsif ($oss =~ /^([^\{\s]+)\{([^\}]*)\}\s*(.*)$/) {
1957 $os = $1; $codes = $2; $oss = $3;
1959 elsif ($oss =~ /^\{([^\}]*)\}\s*(.*)$/) {
1961 $codes = $1; $oss = $2;
1963 elsif ($oss =~ /^(\S+)\s*(.*)$/) {
1965 $os = $1; $oss = $2;
1968 next if ($os && !($os eq $ostype ||
1969 $ostype =~ /^(\S+)-(\S+)$/ && $os eq "*-$2"));
1970 if ($ver =~ /^([0-9\.]+)\-([0-9\.]+)$/) {
1971 next if ($osver < $1 || $osver > $2);
1973 elsif ($ver =~ /^([0-9\.]+)\-\*$/) {
1974 next if ($osver < $1);
1976 elsif ($ver =~ /^\*\-([0-9\.]+)$/) {
1977 next if ($osver > $1);
1980 next if ($ver ne $osver);
1982 next if ($codes && !eval $codes);
1988 =head2 http_download(host, port, page, destfile, [&error], [&callback], [sslmode], [user, pass], [timeout], [osdn-convert], [no-cache], [&headers])
1990 Downloads data from a HTTP url to a local file or string. The parameters are :
1992 =item host - The hostname part of the URL, such as www.google.com
1994 =item port - The HTTP port number, such as 80
1996 =item page - The filename part of the URL, like /index.html
1998 =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.
2000 =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.
2002 =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.
2004 =item sslmode - If set to 1, an HTTPS connection is used instead of HTTP.
2006 =item user - If set, HTTP authentication is done with this username.
2008 =item pass - The HTTP password to use with the username above.
2010 =item timeout - A timeout in seconds to wait for the TCP connection to be established before failing.
2012 =item osdn-convert - If set to 1, URL for downloads from sourceforge are converted to use an appropriate mirror site.
2014 =item no-cache - If set to 1, Webmin's internal caching for this URL is disabled.
2016 =item headers - If set to a hash ref of additional HTTP headers, they will be added to the request.
2021 my ($host, $port, $page, $dest, $error, $cbfunc, $ssl, $user, $pass,
2022 $timeout, $osdn, $nocache, $headers) = @_;
2023 if ($gconfig{'debug_what_net'}) {
2024 &webmin_debug_log('HTTP', "host=$host port=$port page=$page ssl=$ssl".
2025 ($user ? " user=$user pass=$pass" : "").
2026 (ref($dest) ? "" : " dest=$dest"));
2029 # Convert OSDN URL first
2030 my $prot = $ssl ? "https://" : "http://";
2031 my $portstr = $ssl && $port == 443 ||
2032 !$ssl && $port == 80 ? "" : ":$port";
2033 ($host, $port, $page, $ssl) = &parse_http_url(
2034 &convert_osdn_url($prot.$host.$portstr.$page));
2037 # Check if we already have cached the URL
2038 my $url = ($ssl ? "https://" : "http://").$host.":".$port.$page;
2039 my $cfile = &check_in_http_cache($url);
2040 if ($cfile && !$nocache) {
2041 # Yes! Copy to dest file or variable
2042 &$cbfunc(6, $url) if ($cbfunc);
2044 &open_readfile(CACHEFILE, $cfile);
2046 $$dest = <CACHEFILE>;
2050 ©_source_dest($cfile, $dest);
2057 push(@headers, [ "Host", $host ]);
2058 push(@headers, [ "User-agent", "Webmin" ]);
2059 push(@headers, [ "Accept-language", "en" ]);
2061 my $auth = &encode_base64("$user:$pass");
2062 $auth =~ tr/\r\n//d;
2063 push(@headers, [ "Authorization", "Basic $auth" ]);
2065 foreach my $hname (keys %$headers) {
2066 push(@headers, [ $hname, $headers->{$hname} ]);
2069 # Actually download it
2070 $main::download_timed_out = undef;
2071 local $SIG{ALRM} = \&download_timeout;
2072 alarm($timeout || 60);
2073 my $h = &make_http_connection($host, $port, $ssl, "GET", $page, \@headers);
2075 $h = $main::download_timed_out if ($main::download_timed_out);
2077 if ($error) { $$error = $h; return; }
2078 else { &error($h); }
2080 &complete_http_download($h, $dest, $error, $cbfunc, $osdn, $host, $port,
2081 $headers, $ssl, $nocache);
2082 if ((!$error || !$$error) && !$nocache) {
2083 &write_to_http_cache($url, $dest);
2087 =head2 complete_http_download(handle, destfile, [&error], [&callback], [osdn], [oldhost], [oldport], [&send-headers], [old-ssl], [no-cache])
2089 Do a HTTP download, after the headers have been sent. For internal use only,
2090 typically called by http_download.
2093 sub complete_http_download
2095 local ($line, %header, @headers, $s); # Kept local so that callback funcs
2101 ($line = &read_http_connection($_[0])) =~ tr/\r\n//d;
2102 if ($line !~ /^HTTP\/1\..\s+(200|30[0-9])(\s+|$)/) {
2104 if ($_[2]) { ${$_[2]} = $line; return; }
2105 else { &error("Download failed : $line"); }
2108 &$cbfunc(1, $rcode >= 300 && $rcode < 400 ? 1 : 0)
2111 $line = &read_http_connection($_[0]);
2112 $line =~ tr/\r\n//d;
2113 $line =~ /^(\S+):\s+(.*)$/ || last;
2114 $header{lc($1)} = $2;
2115 push(@headers, [ lc($1), $2 ]);
2118 if ($main::download_timed_out) {
2119 if ($_[2]) { ${$_[2]} = $main::download_timed_out; return 0; }
2120 else { &error($main::download_timed_out); }
2122 &$cbfunc(2, $header{'content-length'}) if ($cbfunc);
2123 if ($rcode >= 300 && $rcode < 400) {
2124 # follow the redirect
2125 &$cbfunc(5, $header{'location'}) if ($cbfunc);
2126 my ($host, $port, $page, $ssl);
2127 if ($header{'location'} =~ /^(http|https):\/\/([^:]+):(\d+)(\/.*)?$/) {
2128 $ssl = $1 eq 'https' ? 1 : 0;
2129 $host = $2; $port = $3; $page = $4 || "/";
2131 elsif ($header{'location'} =~ /^(http|https):\/\/([^:\/]+)(\/.*)?$/) {
2132 $ssl = $1 eq 'https' ? 1 : 0;
2133 $host = $2; $port = 80; $page = $3 || "/";
2135 elsif ($header{'location'} =~ /^\// && $_[5]) {
2136 # Relative to same server
2140 $page = $header{'location'};
2142 elsif ($header{'location'}) {
2143 # Assume relative to same dir .. not handled
2144 if ($_[2]) { ${$_[2]} = "Invalid Location header $header{'location'}"; return; }
2145 else { &error("Invalid Location header $header{'location'}"); }
2148 if ($_[2]) { ${$_[2]} = "Missing Location header"; return; }
2149 else { &error("Missing Location header"); }
2152 ($page, $params) = split(/\?/, $page);
2154 $page .= "?".$params if (defined($params));
2155 &http_download($host, $port, $page, $_[1], $_[2], $cbfunc, $ssl,
2156 undef, undef, undef, $_[4], $_[9], $_[7]);
2161 # Append to a variable
2162 while(defined($buf = &read_http_connection($_[0], 1024))) {
2164 &$cbfunc(3, length(${$_[1]})) if ($cbfunc);
2170 if (!&open_tempfile(PFILE, ">$_[1]", 1)) {
2171 if ($_[2]) { ${$_[2]} = "Failed to write to $_[1] : $!"; return; }
2172 else { &error("Failed to write to $_[1] : $!"); }
2174 binmode(PFILE); # For windows
2175 while(defined($buf = &read_http_connection($_[0], 1024))) {
2176 &print_tempfile(PFILE, $buf);
2177 $got += length($buf);
2178 &$cbfunc(3, $got) if ($cbfunc);
2180 &close_tempfile(PFILE);
2181 if ($header{'content-length'} &&
2182 $got != $header{'content-length'}) {
2183 if ($_[2]) { ${$_[2]} = "Download incomplete"; return; }
2184 else { &error("Download incomplete"); }
2187 &$cbfunc(4) if ($cbfunc);
2189 &close_http_connection($_[0]);
2193 =head2 ftp_download(host, file, destfile, [&error], [&callback], [user, pass], [port])
2195 Download data from an FTP site to a local file. The parameters are :
2197 =item host - FTP server hostname
2199 =item file - File on the FTP server to download
2201 =item destfile - File on the Webmin system to download data to
2203 =item error - If set to a string ref, any error message is written into this string and the function returns 0 on failure, 1 on success. Otherwise, error is called on failure.
2205 =item callback - If set to a function ref, it will be called after each block of data is received. This is typically set to \&progress_callback, for printing download progress.
2207 =item user - Username to login to the FTP server as. If missing, Webmin will login as anonymous.
2209 =item pass - Password for the username above.
2211 =item port - FTP server port number, which defaults to 21 if not set.
2216 my ($host, $file, $dest, $error, $cbfunc, $user, $pass, $port) = @_;
2218 if ($gconfig{'debug_what_net'}) {
2219 &webmin_debug_log('FTP', "host=$host port=$port file=$file".
2220 ($user ? " user=$user pass=$pass" : "").
2221 (ref($dest) ? "" : " dest=$dest"));
2225 if (&is_readonly_mode()) {
2226 if ($_[3]) { ${$_[3]} = "FTP connections not allowed in readonly mode";
2228 else { &error("FTP connections not allowed in readonly mode"); }
2231 # Check if we already have cached the URL
2232 my $url = "ftp://".$host.$file;
2233 my $cfile = &check_in_http_cache($url);
2235 # Yes! Copy to dest file or variable
2236 &$cbfunc(6, $url) if ($cbfunc);
2238 &open_readfile(CACHEFILE, $cfile);
2240 $$dest = <CACHEFILE>;
2244 ©_source_dest($cfile, $dest);
2249 # Actually download it
2250 $main::download_timed_out = undef;
2251 local $SIG{ALRM} = \&download_timeout;
2254 if ($gconfig{'ftp_proxy'} =~ /^http:\/\/(\S+):(\d+)/ && !&no_proxy($_[0])) {
2255 # download through http-style proxy
2257 if (&open_socket($1, $2, "SOCK", \$error)) {
2259 if ($main::download_timed_out) {
2261 if ($_[3]) { ${$_[3]} = $main::download_timed_out; return 0; }
2262 else { &error($main::download_timed_out); }
2264 my $esc = $_[1]; $esc =~ s/ /%20/g;
2265 my $up = "$_[5]:$_[6]\@" if ($_[5]);
2266 my $portstr = $port == 21 ? "" : ":$port";
2267 print SOCK "GET ftp://$up$_[0]$portstr$esc HTTP/1.0\r\n";
2268 print SOCK "User-agent: Webmin\r\n";
2269 if ($gconfig{'proxy_user'}) {
2270 my $auth = &encode_base64(
2271 "$gconfig{'proxy_user'}:$gconfig{'proxy_pass'}");
2272 $auth =~ tr/\r\n//d;
2273 print SOCK "Proxy-Authorization: Basic $auth\r\n";
2276 &complete_http_download({ 'fh' => "SOCK" }, $_[2], $_[3], $_[4]);
2279 elsif (!$gconfig{'proxy_fallback'}) {
2281 if ($error) { $$error = $main::download_timed_out; return 0; }
2282 else { &error($main::download_timed_out); }
2287 # connect to host and login with real FTP protocol
2288 &open_socket($_[0], $port, "SOCK", $_[3]) || return 0;
2290 if ($main::download_timed_out) {
2291 if ($_[3]) { ${$_[3]} = $main::download_timed_out; return 0; }
2292 else { &error($main::download_timed_out); }
2294 &ftp_command("", 2, $_[3]) || return 0;
2296 # Login as supplied user
2297 my @urv = &ftp_command("USER $_[5]", [ 2, 3 ], $_[3]);
2299 if (int($urv[1]/100) == 3) {
2300 &ftp_command("PASS $_[6]", 2, $_[3]) || return 0;
2304 # Login as anonymous
2305 my @urv = &ftp_command("USER anonymous", [ 2, 3 ], $_[3]);
2307 if (int($urv[1]/100) == 3) {
2308 &ftp_command("PASS root\@".&get_system_hostname(), 2,
2312 &$cbfunc(1, 0) if ($cbfunc);
2315 # get the file size and tell the callback
2316 &ftp_command("TYPE I", 2, $_[3]) || return 0;
2317 my $size = &ftp_command("SIZE $_[1]", 2, $_[3]);
2318 defined($size) || return 0;
2320 &$cbfunc(2, int($size));
2324 my $pasv = &ftp_command("PASV", 2, $_[3]);
2325 defined($pasv) || return 0;
2326 $pasv =~ /\(([0-9,]+)\)/;
2327 @n = split(/,/ , $1);
2328 &open_socket("$n[0].$n[1].$n[2].$n[3]",
2329 $n[4]*256 + $n[5], "CON", $_[3]) || return 0;
2330 &ftp_command("RETR $_[1]", 1, $_[3]) || return 0;
2334 &open_tempfile(PFILE, ">$_[2]", 1);
2335 while(read(CON, $buf, 1024) > 0) {
2336 &print_tempfile(PFILE, $buf);
2337 $got += length($buf);
2338 &$cbfunc(3, $got) if ($cbfunc);
2340 &close_tempfile(PFILE);
2342 if ($got != $size) {
2343 if ($_[3]) { ${$_[3]} = "Download incomplete"; return 0; }
2344 else { &error("Download incomplete"); }
2346 &$cbfunc(4) if ($cbfunc);
2348 &ftp_command("", 2, $_[3]) || return 0;
2352 &ftp_command("QUIT", 2, $_[3]) || return 0;
2356 &write_to_http_cache($url, $dest);
2360 =head2 ftp_upload(host, file, srcfile, [&error], [&callback], [user, pass], [port])
2362 Upload data from a local file to an FTP site. The parameters are :
2364 =item host - FTP server hostname
2366 =item file - File on the FTP server to write to
2368 =item srcfile - File on the Webmin system to upload data from
2370 =item error - If set to a string ref, any error message is written into this string and the function returns 0 on failure, 1 on success. Otherwise, error is called on failure.
2372 =item callback - If set to a function ref, it will be called after each block of data is received. This is typically set to \&progress_callback, for printing upload progress.
2374 =item user - Username to login to the FTP server as. If missing, Webmin will login as anonymous.
2376 =item pass - Password for the username above.
2378 =item port - FTP server port number, which defaults to 21 if not set.
2385 if (&is_readonly_mode()) {
2386 if ($_[3]) { ${$_[3]} = "FTP connections not allowed in readonly mode";
2388 else { &error("FTP connections not allowed in readonly mode"); }
2391 $main::download_timed_out = undef;
2392 local $SIG{ALRM} = \&download_timeout;
2395 # connect to host and login
2396 &open_socket($_[0], $_[7] || 21, "SOCK", $_[3]) || return 0;
2398 if ($main::download_timed_out) {
2399 if ($_[3]) { ${$_[3]} = $main::download_timed_out; return 0; }
2400 else { &error($main::download_timed_out); }
2402 &ftp_command("", 2, $_[3]) || return 0;
2404 # Login as supplied user
2405 my @urv = &ftp_command("USER $_[5]", [ 2, 3 ], $_[3]);
2407 if (int($urv[1]/100) == 3) {
2408 &ftp_command("PASS $_[6]", 2, $_[3]) || return 0;
2412 # Login as anonymous
2413 my @urv = &ftp_command("USER anonymous", [ 2, 3 ], $_[3]);
2415 if (int($urv[1]/100) == 3) {
2416 &ftp_command("PASS root\@".&get_system_hostname(), 2,
2420 &$cbfunc(1, 0) if ($cbfunc);
2422 &ftp_command("TYPE I", 2, $_[3]) || return 0;
2424 # get the file size and tell the callback
2425 my @st = stat($_[2]);
2427 &$cbfunc(2, $st[7]);
2431 my $pasv = &ftp_command("PASV", 2, $_[3]);
2432 defined($pasv) || return 0;
2433 $pasv =~ /\(([0-9,]+)\)/;
2434 @n = split(/,/ , $1);
2435 &open_socket("$n[0].$n[1].$n[2].$n[3]", $n[4]*256 + $n[5], "CON", $_[3]) || return 0;
2436 &ftp_command("STOR $_[1]", 1, $_[3]) || return 0;
2441 while(read(PFILE, $buf, 1024) > 0) {
2443 $got += length($buf);
2444 &$cbfunc(3, $got) if ($cbfunc);
2448 if ($got != $st[7]) {
2449 if ($_[3]) { ${$_[3]} = "Upload incomplete"; return 0; }
2450 else { &error("Upload incomplete"); }
2452 &$cbfunc(4) if ($cbfunc);
2455 &ftp_command("", 2, $_[3]) || return 0;
2456 &ftp_command("QUIT", 2, $_[3]) || return 0;
2462 =head2 no_proxy(host)
2464 Checks if some host is on the no proxy list. For internal use by the
2465 http_download and ftp_download functions.
2470 my $ip = &to_ipaddress($_[0]);
2471 foreach my $n (split(/\s+/, $gconfig{'noproxy'})) {
2472 return 1 if ($_[0] =~ /\Q$n\E/ ||
2478 =head2 open_socket(host, port, handle, [&error])
2480 Open a TCP connection to some host and port, using a file handle. The
2483 =item host - Hostname or IP address to connect to.
2485 =item port - TCP port number.
2487 =item handle - A file handle name to use for the connection.
2489 =item error - A string reference to write any error message into. If not set, the error function is called on failure.
2494 my ($host, $port, $fh, $err) = @_;
2495 $fh = &callers_package($fh);
2497 if ($gconfig{'debug_what_net'}) {
2498 &webmin_debug_log('TCP', "host=$host port=$port");
2500 if (!socket($fh, PF_INET, SOCK_STREAM, getprotobyname("tcp"))) {
2501 if ($err) { $$err = "Failed to create socket : $!"; return 0; }
2502 else { &error("Failed to create socket : $!"); }
2505 if (!($addr = inet_aton($host))) {
2506 if ($err) { $$err = "Failed to lookup IP address for $host"; return 0; }
2507 else { &error("Failed to lookup IP address for $host"); }
2509 if ($gconfig{'bind_proxy'}) {
2510 if (!bind($fh,pack_sockaddr_in(0, inet_aton($gconfig{'bind_proxy'})))) {
2511 if ($err) { $$err = "Failed to bind to source address : $!"; return 0; }
2512 else { &error("Failed to bind to source address : $!"); }
2515 if (!connect($fh, pack_sockaddr_in($port, $addr))) {
2516 if ($err) { $$err = "Failed to connect to $host:$port : $!"; return 0; }
2517 else { &error("Failed to connect to $host:$port : $!"); }
2519 my $old = select($fh); $| =1; select($old);
2523 =head2 download_timeout
2525 Called when a download times out. For internal use only.
2528 sub download_timeout
2530 $main::download_timed_out = "Download timed out";
2533 =head2 ftp_command(command, expected, [&error], [filehandle])
2535 Send an FTP command, and die if the reply is not what was expected. Mainly
2536 for internal use by the ftp_download and ftp_upload functions.
2541 my ($cmd, $expect, $err, $fh) = @_;
2543 $fh = &callers_package($fh);
2546 my $what = $cmd ne "" ? "<i>$cmd</i>" : "initial connection";
2548 print $fh "$cmd\r\n";
2551 if (!($line = <$fh>)) {
2553 if ($err) { $$err = "Failed to read reply to $what"; return undef; }
2554 else { &error("Failed to read reply to $what"); }
2556 $line =~ /^(...)(.)(.*)$/;
2559 foreach my $c (@$expect) {
2560 $found++ if (int($1/100) == $c);
2564 $found++ if (int($1/100) == $_[1]);
2568 if ($err) { $$err = "$what failed : $3"; return undef; }
2569 else { &error("$what failed : $3"); }
2574 # Need to skip extra stuff..
2576 if (!($line = <$fh>)) {
2578 if ($$err) { $$err = "Failed to read reply to $what";
2580 else { &error("Failed to read reply to $what"); }
2582 $line =~ /^(....)(.*)$/; $reply .= $2;
2583 if ($1 eq "$rcode ") { last; }
2587 return wantarray ? ($reply, $rcode) : $reply;
2590 =head2 to_ipaddress(hostname)
2592 Converts a hostname to an a.b.c.d format IP address, or returns undef if
2593 it cannot be resolved.
2598 if (&check_ipaddress($_[0])) {
2602 my $hn = gethostbyname($_[0]);
2603 return undef if (!$hn);
2604 local @ip = unpack("CCCC", $hn);
2605 return join("." , @ip);
2609 =head2 icons_table(&links, &titles, &icons, [columns], [href], [width], [height], &befores, &afters)
2611 Renders a 4-column table of icons. The useful parameters are :
2613 =item links - An array ref of link destination URLs for the icons.
2615 =item titles - An array ref of titles to appear under the icons.
2617 =item icons - An array ref of URLs for icon images.
2619 =item columns - Number of columns to layout the icons with. Defaults to 4.
2624 &load_theme_library();
2625 if (defined(&theme_icons_table)) {
2626 &theme_icons_table(@_);
2630 my $cols = $_[3] ? $_[3] : 4;
2631 my $per = int(100.0 / $cols);
2632 print "<table class='icons_table' width=100% cellpadding=5>\n";
2633 for(my $i=0; $i<@{$_[0]}; $i++) {
2634 if ($i%$cols == 0) { print "<tr>\n"; }
2635 print "<td width=$per% align=center valign=top>\n";
2636 &generate_icon($_[2]->[$i], $_[1]->[$i], $_[0]->[$i],
2637 ref($_[4]) ? $_[4]->[$i] : $_[4], $_[5], $_[6],
2638 $_[7]->[$i], $_[8]->[$i]);
2640 if ($i%$cols == $cols-1) { print "</tr>\n"; }
2642 while($i++%$cols) { print "<td width=$per%></td>\n"; $need_tr++; }
2643 print "</tr>\n" if ($need_tr);
2647 =head2 replace_file_line(file, line, [newline]*)
2649 Replaces one line in some file with 0 or more new lines. The parameters are :
2651 =item file - Full path to some file, like /etc/hosts.
2653 =item line - Line number to replace, starting from 0.
2655 =item newline - Zero or more lines to put into the file at the given line number. These must be newline-terminated strings.
2658 sub replace_file_line
2661 my $realfile = &translate_filename($_[0]);
2662 open(FILE, $realfile);
2665 if (@_ > 2) { splice(@lines, $_[1], 1, @_[2..$#_]); }
2666 else { splice(@lines, $_[1], 1); }
2667 &open_tempfile(FILE, ">$realfile");
2668 &print_tempfile(FILE, @lines);
2669 &close_tempfile(FILE);
2672 =head2 read_file_lines(file, [readonly])
2674 Returns a reference to an array containing the lines from some file. This
2675 array can be modified, and will be written out when flush_file_lines()
2676 is called. The parameters are :
2678 =item file - Full path to the file to read.
2680 =item readonly - Should be set 1 if the caller is only going to read the lines, and never write it out.
2684 $lref = read_file_lines("/etc/hosts");
2685 push(@$lref, "127.0.0.1 localhost");
2686 flush_file_lines("/etc/hosts");
2692 my ($package, $filename, $line) = caller;
2693 print STDERR "Missing file to read at ${package}::${filename} line $line\n";
2695 my $realfile = &translate_filename($_[0]);
2696 if (!$main::file_cache{$realfile}) {
2699 &webmin_debug_log('READ', $_[0]) if ($gconfig{'debug_what_read'});
2700 open(READFILE, $realfile);
2703 $eol = /\r\n$/ ? "\r\n" : "\n";
2709 $main::file_cache{$realfile} = \@lines;
2710 $main::file_cache_noflush{$realfile} = $_[1];
2711 $main::file_cache_eol{$realfile} = $eol || "\n";
2714 # Make read-write if currently readonly
2716 $main::file_cache_noflush{$realfile} = 0;
2719 return $main::file_cache{$realfile};
2722 =head2 flush_file_lines([file], [eol])
2724 Write out to a file previously read by read_file_lines to disk (except
2725 for those marked readonly). The parameters are :
2727 =item file - The file to flush out.
2729 =item eof - End-of-line character for each line. Defaults to \n.
2732 sub flush_file_lines
2736 local $trans = &translate_filename($_[0]);
2737 $main::file_cache{$trans} ||
2738 &error("flush_file_lines called on non-loaded file $trans");
2739 push(@files, $trans);
2742 @files = ( keys %main::file_cache );
2744 foreach my $f (@files) {
2745 my $eol = $_[1] || $main::file_cache_eol{$f} || "\n";
2746 if (!$main::file_cache_noflush{$f}) {
2747 no warnings; # XXX Bareword file handles should go away
2748 &open_tempfile(FLUSHFILE, ">$f");
2749 foreach my $line (@{$main::file_cache{$f}}) {
2750 (print FLUSHFILE $line,$eol) ||
2751 &error(&text("efilewrite", $f, $!));
2753 &close_tempfile(FLUSHFILE);
2755 delete($main::file_cache{$f});
2756 delete($main::file_cache_noflush{$f});
2760 =head2 unflush_file_lines(file)
2762 Clear the internal cache of some given file, previously read by read_file_lines.
2765 sub unflush_file_lines
2767 my $realfile = &translate_filename($_[0]);
2768 delete($main::file_cache{$realfile});
2769 delete($main::file_cache_noflush{$realfile});
2772 =head2 unix_user_input(fieldname, user, [form])
2774 Returns HTML for an input to select a Unix user. By default this is a text
2775 box with a user popup button next to it.
2780 if (defined(&theme_unix_user_input)) {
2781 return &theme_unix_user_input(@_);
2783 return "<input name=$_[0] size=13 value=\"$_[1]\"> ".
2784 &user_chooser_button($_[0], 0, $_[2] || 0)."\n";
2787 =head2 unix_group_input(fieldname, user, [form])
2789 Returns HTML for an input to select a Unix group. By default this is a text
2790 box with a group popup button next to it.
2793 sub unix_group_input
2795 if (defined(&theme_unix_group_input)) {
2796 return &theme_unix_group_input(@_);
2798 return "<input name=$_[0] size=13 value=\"$_[1]\"> ".
2799 &group_chooser_button($_[0], 0, $_[2] || 0)."\n";
2802 =head2 hlink(text, page, [module], [width], [height])
2804 Returns HTML for a link that when clicked on pops up a window for a Webmin
2805 help page. The parameters are :
2807 =item text - Text for the link.
2809 =item page - Help page code, such as 'intro'.
2811 =item module - Module the help page is in. Defaults to the current module.
2813 =item width - Width of the help popup window. Defaults to 600 pixels.
2815 =item height - Height of the help popup window. Defaults to 400 pixels.
2817 The actual help pages are in each module's help sub-directory, in files with
2823 if (defined(&theme_hlink)) {
2824 return &theme_hlink(@_);
2826 my $mod = $_[2] ? $_[2] : &get_module_name();
2827 my $width = $_[3] || $tconfig{'help_width'} || $gconfig{'help_width'} || 600;
2828 my $height = $_[4] || $tconfig{'help_height'} || $gconfig{'help_height'} || 400;
2829 return "<a onClick='window.open(\"$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>";
2832 =head2 user_chooser_button(field, multiple, [form])
2834 Returns HTML for a javascript button for choosing a Unix user or users.
2835 The parameters are :
2837 =item field - Name of the HTML field to place the username into.
2839 =item multiple - Set to 1 if multiple users can be selected.
2841 =item form - Index of the form on the page.
2844 sub user_chooser_button
2846 return undef if (!&supports_users());
2847 return &theme_user_chooser_button(@_)
2848 if (defined(&theme_user_chooser_button));
2849 my $form = defined($_[2]) ? $_[2] : 0;
2850 my $w = $_[1] ? 500 : 300;
2852 if ($_[1] && $gconfig{'db_sizeusers'}) {
2853 ($w, $h) = split(/x/, $gconfig{'db_sizeusers'});
2855 elsif (!$_[1] && $gconfig{'db_sizeuser'}) {
2856 ($w, $h) = split(/x/, $gconfig{'db_sizeuser'});
2858 return "<input type=button onClick='ifield = form.$_[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";
2861 =head2 group_chooser_button(field, multiple, [form])
2863 Returns HTML for a javascript button for choosing a Unix group or groups
2864 The parameters are :
2866 =item field - Name of the HTML field to place the group name into.
2868 =item multiple - Set to 1 if multiple groups can be selected.
2870 =item form - Index of the form on the page.
2873 sub group_chooser_button
2875 return undef if (!&supports_users());
2876 return &theme_group_chooser_button(@_)
2877 if (defined(&theme_group_chooser_button));
2878 my $form = defined($_[2]) ? $_[2] : 0;
2879 my $w = $_[1] ? 500 : 300;
2881 if ($_[1] && $gconfig{'db_sizeusers'}) {
2882 ($w, $h) = split(/x/, $gconfig{'db_sizeusers'});
2884 elsif (!$_[1] && $gconfig{'db_sizeuser'}) {
2885 ($w, $h) = split(/x/, $gconfig{'db_sizeuser'});
2887 return "<input type=button onClick='ifield = form.$_[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";
2890 =head2 foreign_check(module, [api-only])
2892 Checks if some other module exists and is supported on this OS. The parameters
2895 =item module - Name of the module to check.
2897 =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.
2902 my ($mod, $api) = @_;
2904 my $mdir = &module_root_directory($mod);
2905 &read_file_cached("$mdir/module.info", \%minfo) || return 0;
2906 return &check_os_support(\%minfo, undef, undef, $api);
2909 =head2 foreign_exists(module)
2911 Checks if some other module exists. The module parameter is the short module
2917 my $mdir = &module_root_directory($_[0]);
2918 return -r "$mdir/module.info";
2921 =head2 foreign_available(module)
2923 Returns 1 if some module is installed, and acessible to the current user. The
2924 module parameter is the module directory name.
2927 sub foreign_available
2929 return 0 if (!&foreign_check($_[0]) &&
2930 !$gconfig{'available_even_if_no_support'});
2931 my %foreign_module_info = &get_module_info($_[0]);
2933 # Check list of allowed modules
2935 &read_acl(\%acl, undef);
2936 return 0 if (!$acl{$base_remote_user,$_[0]} &&
2937 !$acl{$base_remote_user,'*'});
2939 # Check for usermod restrictions
2940 my @usermods = &list_usermods();
2941 return 0 if (!&available_usermods( [ \%foreign_module_info ], \@usermods));
2943 if (&get_product_name() eq "webmin") {
2944 # Check if the user has any RBAC privileges in this module
2945 if (&supports_rbac($_[0]) &&
2946 &use_rbac_module_acl(undef, $_[0])) {
2947 # RBAC is enabled for this user and module - check if he
2949 my $rbacs = &get_rbac_module_acl($remote_user, $_[0]);
2950 return 0 if (!$rbacs);
2952 elsif ($gconfig{'rbacdeny_'.$base_remote_user}) {
2953 # If denying access to modules not specifically allowed by
2954 # RBAC, then prevent access
2959 # Check readonly support
2960 if (&is_readonly_mode()) {
2961 return 0 if (!$foreign_module_info{'readonly'});
2964 # Check if theme vetos
2965 if (defined(&theme_foreign_available)) {
2966 return 0 if (!&theme_foreign_available($_[0]));
2969 # Check if licence module vetos
2970 if ($main::licence_module) {
2971 return 0 if (!&foreign_call($main::licence_module,
2972 "check_module_licence", $_[0]));
2978 =head2 foreign_require(module, [file], [package])
2980 Brings in functions from another module, and places them in the Perl namespace
2981 with the same name as the module. The parameters are :
2983 =item module - The source module's directory name, like sendmail.
2985 =item file - The API file in that module, like sendmail-lib.pl. If missing, all API files are loaded.
2987 =item package - Perl package to place the module's functions and global variables in.
2989 If the original module name contains dashes, they will be replaced with _ in
2995 my ($mod, $file, $pkg) = @_;
2996 $pkg ||= $mod || "global";
2997 $pkg =~ s/[^A-Za-z0-9]/_/g;
3000 push(@files, $file);
3004 my %minfo = &get_module_info($mod);
3005 if ($minfo{'library'}) {
3006 @files = split(/\s+/, $minfo{'library'});
3009 @files = ( $mod."-lib.pl" );
3012 @files = grep { !$main::done_foreign_require{$pkg,$_} } @files;
3013 return 1 if (!@files);
3014 foreach my $f (@files) {
3015 $main::done_foreign_require{$pkg,$f}++;
3018 my $mdir = &module_root_directory($mod);
3019 @INC = &unique($mdir, @INC);
3020 -d $mdir || &error("Module $mod does not exist");
3021 if (!&get_module_name() && $mod) {
3024 my $old_fmn = $ENV{'FOREIGN_MODULE_NAME'};
3025 my $old_frd = $ENV{'FOREIGN_ROOT_DIRECTORY'};
3026 my $code = "package $pkg; ".
3027 "\$ENV{'FOREIGN_MODULE_NAME'} = '$mod'; ".
3028 "\$ENV{'FOREIGN_ROOT_DIRECTORY'} = '$root_directory'; ";
3029 foreach my $f (@files) {
3030 $code .= "do '$mdir/$f' || die \$@; ";
3033 if (defined($old_fmn)) {
3034 $ENV{'FOREIGN_MODULE_NAME'} = $old_fmn;
3037 delete($ENV{'FOREIGN_MODULE_NAME'});
3039 if (defined($old_frd)) {
3040 $ENV{'FOREIGN_ROOT_DIRECTORY'} = $old_frd;
3043 delete($ENV{'FOREIGN_ROOT_DIRECTORY'});
3046 if ($@) { &error("Require $mod/$files[0] failed : <pre>$@</pre>"); }
3050 =head2 foreign_call(module, function, [arg]*)
3052 Call a function in another module. The module parameter is the target module
3053 directory name, function is the perl sub to call, and the remaining parameters
3054 are the arguments. However, unless you need to call a function whose name
3055 is dynamic, it is better to use Perl's cross-module function call syntax
3056 like module::function(args).
3061 my $pkg = $_[0] || "global";
3062 $pkg =~ s/[^A-Za-z0-9]/_/g;
3063 my @args = @_[2 .. @_-1];
3064 $main::foreign_args = \@args;
3065 my @rv = eval <<EOF;
3067 &$_[1](\@{\$main::foreign_args});
3069 if ($@) { &error("$_[0]::$_[1] failed : $@"); }
3070 return wantarray ? @rv : $rv[0];
3073 =head2 foreign_config(module, [user-config])
3075 Get the configuration from another module, and return it as a hash. If the
3076 user-config parameter is set to 1, returns the Usermin user-level preferences
3077 for the current user instead.
3082 my ($mod, $uc) = @_;
3085 &read_file_cached("$root_directory/$mod/defaultuconfig", \%fconfig);
3086 &read_file_cached("$config_directory/$mod/uconfig", \%fconfig);
3087 &read_file_cached("$user_config_directory/$mod/config", \%fconfig);
3090 &read_file_cached("$config_directory/$mod/config", \%fconfig);
3095 =head2 foreign_installed(module, mode)
3097 Checks if the server for some module is installed, and possibly also checks
3098 if the module has been configured by Webmin.
3099 For mode 1, returns 2 if the server is installed and configured for use by
3100 Webmin, 1 if installed but not configured, or 0 otherwise.
3101 For mode 0, returns 1 if installed, 0 if not.
3102 If the module does not provide an install_check.pl script, assumes that
3103 the server is installed.
3106 sub foreign_installed
3108 my ($mod, $configured) = @_;
3109 if (defined($main::foreign_installed_cache{$mod,$configured})) {
3111 return $main::foreign_installed_cache{$mod,$configured};
3115 if (!&foreign_check($mod)) {
3120 my $mdir = &module_root_directory($mod);
3121 if (!-r "$mdir/install_check.pl") {
3122 # Not known, assume OK
3123 $rv = $configured ? 2 : 1;
3126 # Call function to check
3127 &foreign_require($mod, "install_check.pl");
3128 $rv = &foreign_call($mod, "is_installed", $configured);
3131 $main::foreign_installed_cache{$mod,$configured} = $rv;
3136 =head2 foreign_defined(module, function)
3138 Returns 1 if some function is defined in another module. In general, it is
3139 simpler to use the syntax &defined(module::function) instead.
3145 $pkg =~ s/[^A-Za-z0-9]/_/g;
3146 my $func = "${pkg}::$_[1]";
3147 return defined(&$func);
3150 =head2 get_system_hostname([short])
3152 Returns the hostname of this system. If the short parameter is set to 1,
3153 then the domain name is not prepended - otherwise, Webmin will attempt to get
3154 the fully qualified hostname, like foo.example.com.
3157 sub get_system_hostname
3160 if (!$main::get_system_hostname[$m]) {
3161 if ($gconfig{'os_type'} ne 'windows') {
3162 # Try some common Linux hostname files first
3164 if ($gconfig{'os_type'} eq 'redhat-linux') {
3166 &read_env_file("/etc/sysconfig/network", \%nc);
3167 if ($nc{'HOSTNAME'}) {
3168 $fromfile = $nc{'HOSTNAME'};
3171 elsif ($gconfig{'os_type'} eq 'debian-linux') {
3172 my $hn = &read_file_contents("/etc/hostname");
3178 elsif ($gconfig{'os_type'} eq 'open-linux') {
3179 my $hn = &read_file_contents("/etc/HOSTNAME");
3185 elsif ($gconfig{'os_type'} eq 'solaris') {
3186 my $hn = &read_file_contents("/etc/nodename");
3193 # If we found a hostname, use it if value
3194 if ($fromfile && ($m || $fromfile =~ /\./)) {
3196 $fromfile =~ s/\..*$//;
3198 $main::get_system_hostname[$m] = $fromfile;
3202 # Can use hostname command on Unix
3203 &execute_command("hostname", undef,
3204 \$main::get_system_hostname[$m], undef, 0, 1);
3205 chop($main::get_system_hostname[$m]);
3207 eval "use Sys::Hostname";
3209 $main::get_system_hostname[$m] = eval "hostname()";
3211 if ($@ || !$main::get_system_hostname[$m]) {
3212 $main::get_system_hostname[$m] = "UNKNOWN";
3215 elsif ($main::get_system_hostname[$m] !~ /\./ &&
3216 $gconfig{'os_type'} =~ /linux$/ &&
3217 !$gconfig{'no_hostname_f'} && !$_[0]) {
3218 # Try with -f flag to get fully qualified name
3220 my $ex = &execute_command("hostname -f", undef, \$flag,
3223 if ($ex || $flag eq "") {
3224 # -f not supported! We have probably set the
3225 # hostname to just '-f'. Fix the problem
3228 &execute_command("hostname ".
3229 quotemeta($main::get_system_hostname[$m]),
3230 undef, undef, undef, 0, 1);
3234 $main::get_system_hostname[$m] = $flag;
3239 # On Windows, try computername environment variable
3240 return $ENV{'computername'} if ($ENV{'computername'});
3241 return $ENV{'COMPUTERNAME'} if ($ENV{'COMPUTERNAME'});
3243 # Fall back to net name command
3244 my $out = `net name 2>&1`;
3245 if ($out =~ /\-+\r?\n(\S+)/) {
3246 $main::get_system_hostname[$m] = $1;
3249 $main::get_system_hostname[$m] = "windows";
3253 return $main::get_system_hostname[$m];
3256 =head2 get_webmin_version
3258 Returns the version of Webmin currently being run, such as 1.450.
3261 sub get_webmin_version
3263 if (!$get_webmin_version) {
3264 open(VERSION, "$root_directory/version") || return 0;
3265 ($get_webmin_version = <VERSION>) =~ tr/\r|\n//d;
3268 return $get_webmin_version;
3271 =head2 get_module_acl([user], [module], [no-rbac], [no-default])
3273 Returns a hash containing access control options for the given user and module.
3274 By default the current username and module name are used. If the no-rbac flag
3275 is given, the permissions will not be updated based on the user's RBAC role
3276 (as seen on Solaris). If the no-default flag is given, default permissions for
3277 the module will not be included.
3282 my $u = defined($_[0]) ? $_[0] : $base_remote_user;
3283 my $m = defined($_[1]) ? $_[1] : &get_module_name();
3284 my $mdir = &module_root_directory($m);
3287 # Read default ACL first, to be overridden by per-user settings
3288 &read_file_cached("$mdir/defaultacl", \%rv);
3290 # If this isn't a master admin user, apply the negative permissions
3291 # so that he doesn't un-expectedly gain access to new features
3293 &read_file_cached("$config_directory/$u.acl", \%gaccess);
3294 if ($gaccess{'negative'}) {
3295 &read_file_cached("$mdir/negativeacl", \%rv);
3299 if (!$_[2] && &supports_rbac($m) && &use_rbac_module_acl($u, $m)) {
3300 # RBAC overrides exist for this user in this module
3301 my $rbac = &get_rbac_module_acl(
3302 defined($_[0]) ? $_[0] : $remote_user, $m);
3303 foreach my $r (keys %$rbac) {
3304 $rv{$r} = $rbac->{$r};
3307 elsif ($gconfig{"risk_$u"} && $m) {
3308 # ACL is defined by user's risk level
3309 my $rf = $gconfig{"risk_$u"}.'.risk';
3310 &read_file_cached("$mdir/$rf", \%rv);
3312 my $sf = $gconfig{"skill_$u"}.'.skill';
3313 &read_file_cached("$mdir/$sf", \%rv);
3316 # Use normal Webmin ACL, if a user is set
3317 my $userdb = &get_userdb_string();
3320 # Look for this user in the user/group DB
3321 my ($dbh, $proto) = &connect_userdb($userdb);
3322 ref($dbh) || &error(&text('euserdbacl', $dbh));
3323 if ($proto eq "mysql" || $proto eq "postgresql") {
3324 # Find the user in the SQL DB
3325 my $cmd = $dbh->prepare(
3326 "select id from webmin_user where name = ?");
3327 $cmd && $cmd->execute($u) ||
3328 &error(&text('euserdbacl', $dbh->errstr));
3329 my ($id) = $cmd->fetchrow();
3330 $foundindb = 1 if (defined($id));
3333 # Fetch ACLs with SQL
3335 my $cmd = $dbh->prepare(
3336 "select attr,value from webmin_user_acl ".
3337 "where id = ? and module = ?");
3338 $cmd && $cmd->execute($id, $m) ||
3339 &error(&text('euserdbacl', $dbh->errstr));
3340 while(my ($a, $v) = $cmd->fetchrow()) {
3346 elsif ($proto eq "ldap") {
3347 # Fetch ACLs from LDAP
3350 &disconnect_userdb($userdb, $dbh);
3354 # Read from local files
3355 &read_file_cached("$config_directory/$m/$u.acl", \%rv);
3356 if ($remote_user ne $base_remote_user && !defined($_[0])) {
3358 "$config_directory/$m/$remote_user.acl",\%rv);
3362 if ($tconfig{'preload_functions'}) {
3363 &load_theme_library();
3365 if (defined(&theme_get_module_acl)) {
3366 %rv = &theme_get_module_acl($u, $m, \%rv);
3371 =head2 get_group_module_acl(group, [module])
3373 Returns the ACL for a Webmin group, in an optional module (which defaults to
3374 the current module).
3377 sub get_group_module_acl
3380 my $m = defined($_[1]) ? $_[1] : &get_module_name();
3381 my $mdir = &module_root_directory($m);
3383 &read_file_cached("$mdir/defaultacl", \%rv);
3385 my $userdb = &get_userdb_string();
3388 # Look for this group in the user/group DB
3389 my ($dbh, $proto) = &connect_userdb($userdb);
3390 ref($dbh) || &error(&text('egroupdbacl', $dbh));
3391 if ($proto eq "mysql" || $proto eq "postgresql") {
3392 # Find the group in the SQL DB
3393 my $cmd = $dbh->prepare(
3394 "select id from webmin_group where name = ?");
3395 $cmd && $cmd->execute($g) ||
3396 &error(&text('egroupdbacl', $dbh->errstr));
3397 my ($id) = $cmd->fetchrow();
3398 $foundindb = 1 if (defined($id));
3401 # Fetch ACLs with SQL
3403 my $cmd = $dbh->prepare(
3404 "select attr,value from webmin_group_acl ".
3405 "where id = ? and module = ?");
3406 $cmd && $cmd->execute($id, $m) ||
3407 &error(&text('egroupdbacl', $dbh->errstr));
3408 while(my ($a, $v) = $cmd->fetchrow()) {
3414 elsif ($proto eq "ldap") {
3415 # Fetch ACLs from LDAP
3418 &disconnect_userdb($userdb, $dbh);
3421 # Read from local files
3422 &read_file_cached("$config_directory/$m/$g.gacl", \%rv);
3424 if (defined(&theme_get_module_acl)) {
3425 %rv = &theme_get_module_acl($g, $m, \%rv);
3430 =head2 save_module_acl(&acl, [user], [module], [never-update-group])
3432 Updates the acl hash for some user and module. The parameters are :
3434 =item acl - Hash reference for the new access control options, or undef to clear
3436 =item user - User to update, defaulting to the current user.
3438 =item module - Module to update, defaulting to the caller.
3440 =item never-update-group - Never update the user's group's ACL
3445 my $u = defined($_[1]) ? $_[1] : $base_remote_user;
3446 my $m = defined($_[2]) ? $_[2] : &get_module_name();
3447 if (!$_[3] && &foreign_check("acl")) {
3448 # Check if this user is a member of a group, and if he gets the
3449 # module from a group. If so, update its ACL as well
3450 &foreign_require("acl", "acl-lib.pl");
3452 foreach my $g (&acl::list_groups()) {
3453 if (&indexof($u, @{$g->{'members'}}) >= 0 &&
3454 &indexof($m, @{$g->{'modules'}}) >= 0) {
3460 &save_group_module_acl($_[0], $group->{'name'}, $m);
3464 my $userdb = &get_userdb_string();
3467 # Look for this user in the user/group DB
3468 my ($dbh, $proto) = &connect_userdb($userdb);
3469 ref($dbh) || &error(&text('euserdbacl', $dbh));
3470 if ($proto eq "mysql" || $proto eq "postgresql") {
3471 # Find the user in the SQL DB
3472 my $cmd = $dbh->prepare(
3473 "select id from webmin_user where name = ?");
3474 $cmd && $cmd->execute($u) ||
3475 &error(&text('euserdbacl2', $dbh->errstr));
3476 my ($id) = $cmd->fetchrow();
3477 $foundindb = 1 if (defined($id));
3480 # Replace ACLs for user
3482 my $cmd = $dbh->prepare("delete from webmin_user_acl ".
3483 "where id = ? and module = ?");
3484 $cmd && $cmd->execute($id, $m) ||
3485 &error(&text('euserdbacl', $dbh->errstr));
3488 my $cmd = $dbh->prepare(
3489 "insert into webmin_user_acl ".
3490 "(id,module,attr,value) values (?,?,?,?)");
3491 $cmd || &error(&text('euserdbacl2',
3493 foreach my $a (keys %{$_[0]}) {
3494 $cmd->execute($id,$m,$a,$_[0]->{$a}) ||
3495 &error(&text('euserdbacl2',
3502 elsif ($proto eq "ldap") {
3503 # Update ACLs in LDAP
3506 &disconnect_userdb($userdb, $dbh);
3510 # Save ACL to local file
3511 if (!-d "$config_directory/$m") {
3512 mkdir("$config_directory/$m", 0755);
3515 &write_file("$config_directory/$m/$u.acl", $_[0]);
3518 &unlink_file("$config_directory/$m/$u.acl");
3523 =head2 save_group_module_acl(&acl, group, [module], [never-update-group])
3525 Updates the acl hash for some group and module. The parameters are :
3527 =item acl - Hash reference for the new access control options.
3529 =item group - Group name to update.
3531 =item module - Module to update, defaulting to the caller.
3533 =item never-update-group - Never update the parent group's ACL
3536 sub save_group_module_acl
3539 my $m = defined($_[2]) ? $_[2] : &get_module_name();
3540 if (!$_[3] && &foreign_check("acl")) {
3541 # Check if this group is a member of a group, and if it gets the
3542 # module from a group. If so, update the parent ACL as well
3543 &foreign_require("acl", "acl-lib.pl");
3545 foreach my $pg (&acl::list_groups()) {
3546 if (&indexof('@'.$g, @{$pg->{'members'}}) >= 0 &&
3547 &indexof($m, @{$pg->{'modules'}}) >= 0) {
3553 &save_group_module_acl($_[0], $group->{'name'}, $m);
3557 my $userdb = &get_userdb_string();
3560 # Look for this group in the user/group DB
3561 my ($dbh, $proto) = &connect_userdb($userdb);
3562 ref($dbh) || &error(&text('egroupdbacl', $dbh));
3563 if ($proto eq "mysql" || $proto eq "postgresql") {
3564 # Find the group in the SQL DB
3565 my $cmd = $dbh->prepare(
3566 "select id from webmin_group where name = ?");
3567 $cmd && $cmd->execute($g) ||
3568 &error(&text('egroupdbacl2', $dbh->errstr));
3569 my ($id) = $cmd->fetchrow();
3570 $foundindb = 1 if (defined($id));
3573 # Replace ACLs for group
3575 my $cmd = $dbh->prepare("delete from webmin_group_acl ".
3576 "where id = ? and module = ?");
3577 $cmd && $cmd->execute($id, $m) ||
3578 &error(&text('egroupdbacl', $dbh->errstr));
3581 my $cmd = $dbh->prepare(
3582 "insert into webmin_group_acl ".
3583 "(id,module,attr,value) values (?,?,?,?)");
3584 $cmd || &error(&text('egroupdbacl2',
3586 foreach my $a (keys %{$_[0]}) {
3587 $cmd->execute($id,$m,$a,$_[0]->{$a}) ||
3588 &error(&text('egroupdbacl2',
3595 elsif ($proto eq "ldap") {
3596 # Update ACLs in LDAP
3599 &disconnect_userdb($userdb, $dbh);
3603 # Save ACL to local file
3604 if (!-d "$config_directory/$m") {
3605 mkdir("$config_directory/$m", 0755);
3608 &write_file("$config_directory/$m/$g.gacl", $_[0]);
3611 &unlink_file("$config_directory/$m/$g.gacl");
3618 This function must be called by all Webmin CGI scripts, either directly or
3619 indirectly via a per-module lib.pl file. It performs a number of initialization
3620 and housekeeping tasks, such as working out the module name, checking that the
3621 current user has access to the module, and populating global variables. Some
3622 of the variables set include :
3624 =item $config_directory - Base Webmin config directory, typically /etc/webmin
3626 =item $var_directory - Base logs directory, typically /var/webmin
3628 =item %config - Per-module configuration.
3630 =item %gconfig - Global configuration.
3632 =item $scriptname - Base name of the current perl script.
3634 =item $module_name - The name of the current module.
3636 =item $module_config_directory - The config directory for this module.
3638 =item $module_config_file - The config file for this module.
3640 =item $module_root_directory - This module's code directory.
3642 =item $webmin_logfile - The detailed logfile for webmin.
3644 =item $remote_user - The actual username used to login to webmin.
3646 =item $base_remote_user - The username whose permissions are in effect.
3648 =item $current_theme - The theme currently in use.
3650 =item $root_directory - The first root directory of this webmin install.
3652 =item @root_directories - All root directories for this webmin install.
3657 # Record first process ID that called this, so we know when it exited to clean
3659 $main::initial_process_id ||= $$;
3661 # Configuration and spool directories
3662 if (!defined($ENV{'WEBMIN_CONFIG'})) {
3663 die "WEBMIN_CONFIG not set";
3665 $config_directory = $ENV{'WEBMIN_CONFIG'};
3666 if (!defined($ENV{'WEBMIN_VAR'})) {
3667 open(VARPATH, "$config_directory/var-path");
3668 chop($var_directory = <VARPATH>);
3672 $var_directory = $ENV{'WEBMIN_VAR'};
3674 $main::http_cache_directory = $ENV{'WEBMIN_VAR'}."/cache";
3675 $main::default_debug_log_file = $ENV{'WEBMIN_VAR'}."/webmin.debug";
3677 if ($ENV{'SESSION_ID'}) {
3678 # Hide this variable from called programs, but keep it for internal use
3679 $main::session_id = $ENV{'SESSION_ID'};
3680 delete($ENV{'SESSION_ID'});
3682 if ($ENV{'REMOTE_PASS'}) {
3683 # Hide the password too
3684 $main::remote_pass = $ENV{'REMOTE_PASS'};
3685 delete($ENV{'REMOTE_PASS'});
3688 if ($> == 0 && $< != 0 && !$ENV{'FOREIGN_MODULE_NAME'}) {
3689 # Looks like we are running setuid, but the real UID hasn't been set.
3690 # Do so now, so that executed programs don't get confused
3695 # Read the webmin global config file. This contains the OS type and version,
3696 # OS specific configuration and global options such as proxy servers
3697 $config_file = "$config_directory/config";
3699 &read_file_cached($config_file, \%gconfig);
3700 $null_file = $gconfig{'os_type'} eq 'windows' ? "NUL" : "/dev/null";
3701 $path_separator = $gconfig{'os_type'} eq 'windows' ? ';' : ':';
3703 # If debugging is enabled, open the debug log
3704 if ($gconfig{'debug_enabled'} && !$main::opened_debug_log++) {
3705 my $dlog = $gconfig{'debug_file'} || $main::default_debug_log_file;
3706 if ($gconfig{'debug_size'}) {
3707 my @st = stat($dlog);
3708 if ($st[7] > $gconfig{'debug_size'}) {
3709 rename($dlog, $dlog.".0");
3712 open(main::DEBUGLOG, ">>$dlog");
3713 $main::opened_debug_log = 1;
3715 if ($gconfig{'debug_what_start'}) {
3716 my $script_name = $0 =~ /([^\/]+)$/ ? $1 : '-';
3717 $main::debug_log_start_time = time();
3718 &webmin_debug_log("START", "script=$script_name");
3719 $main::debug_log_start_module = $module_name;
3723 # Set PATH and LD_LIBRARY_PATH
3724 if ($gconfig{'path'}) {
3725 if ($gconfig{'syspath'}) {
3727 $ENV{'PATH'} = $gconfig{'path'};
3731 $ENV{'PATH'} = $gconfig{'path'}.$path_separator.$ENV{'PATH'};
3734 $ENV{$gconfig{'ld_env'}} = $gconfig{'ld_path'} if ($gconfig{'ld_env'});
3736 # Set http_proxy and ftp_proxy environment variables, based on Webmin settings
3737 if ($gconfig{'http_proxy'}) {
3738 $ENV{'http_proxy'} = $gconfig{'http_proxy'};
3740 if ($gconfig{'ftp_proxy'}) {
3741 $ENV{'ftp_proxy'} = $gconfig{'ftp_proxy'};
3743 if ($gconfig{'noproxy'}) {
3744 $ENV{'no_proxy'} = $gconfig{'noproxy'};
3747 # Find all root directories
3749 if (&get_miniserv_config(\%miniserv)) {
3750 @root_directories = ( $miniserv{'root'} );
3751 for($i=0; defined($miniserv{"extraroot_$i"}); $i++) {
3752 push(@root_directories, $miniserv{"extraroot_$i"});
3756 # Work out which module we are in, and read the per-module config file
3757 $0 =~ s/\\/\//g; # Force consistent path on Windows
3758 if (defined($ENV{'FOREIGN_MODULE_NAME'})) {
3759 # In a foreign call - use the module name given
3760 $root_directory = $ENV{'FOREIGN_ROOT_DIRECTORY'};
3761 $module_name = $ENV{'FOREIGN_MODULE_NAME'};
3762 @root_directories = ( $root_directory ) if (!@root_directories);
3764 elsif ($ENV{'SCRIPT_NAME'}) {
3765 my $sn = $ENV{'SCRIPT_NAME'};
3766 $sn =~ s/^$gconfig{'webprefix'}//
3767 if (!$gconfig{'webprefixnoredir'});
3768 if ($sn =~ /^\/([^\/]+)\//) {
3769 # Get module name from CGI path
3772 if ($ENV{'SERVER_ROOT'}) {
3773 $root_directory = $ENV{'SERVER_ROOT'};
3775 elsif ($ENV{'SCRIPT_FILENAME'}) {
3776 $root_directory = $ENV{'SCRIPT_FILENAME'};
3777 $root_directory =~ s/$sn$//;
3779 @root_directories = ( $root_directory ) if (!@root_directories);
3782 # Get root directory from miniserv.conf, and deduce module name from $0
3783 $root_directory = $root_directories[0];
3785 foreach my $r (@root_directories) {
3786 if ($0 =~ /^$r\/([^\/]+)\/[^\/]+$/i) {
3787 # Under a module directory
3792 elsif ($0 =~ /^$root_directory\/[^\/]+$/i) {
3798 &error("Script was not run with full path (failed to find $0 under $root_directory)") if (!$rok);
3801 # Work out of this is a web, command line or cron job
3802 if (!$main::webmin_script_type) {
3803 if ($ENV{'SCRIPT_NAME'}) {
3805 $main::webmin_script_type = 'web';
3808 # Cron jobs have no TTY
3809 if ($gconfig{'os_type'} eq 'windows' ||
3810 open(DEVTTY, ">/dev/tty")) {
3811 $main::webmin_script_type = 'cmd';
3815 $main::webmin_script_type = 'cron';
3820 # Set the umask based on config
3821 if ($gconfig{'umask'} && !$main::umask_already++) {
3822 umask(oct($gconfig{'umask'}));
3825 # If this is a cron job or other background task, set the nice level
3826 if (!$main::nice_already && $main::webmin_script_type eq 'cron') {
3828 if ($gconfig{'nice'}) {
3829 eval 'POSIX::nice($gconfig{\'nice\'});';
3832 # Set IO scheduling class and priority
3833 if ($gconfig{'sclass'} ne '' || $gconfig{'sprio'} ne '') {
3835 $cmd .= " -c ".quotemeta($gconfig{'sclass'})
3836 if ($gconfig{'sclass'} ne '');
3837 $cmd .= " -n ".quotemeta($gconfig{'sprio'})
3838 if ($gconfig{'sprio'} ne '');
3840 &execute_command("$cmd >/dev/null 2>&1");
3843 $main::nice_already++;
3846 my $u = $ENV{'BASE_REMOTE_USER'} || $ENV{'REMOTE_USER'};
3847 $base_remote_user = $u;
3848 $remote_user = $ENV{'REMOTE_USER'};
3851 # Find and load the configuration file for this module
3852 my (@ruinfo, $rgroup);
3853 $module_config_directory = "$config_directory/$module_name";
3854 if (&get_product_name() eq "usermin" &&
3855 -r "$module_config_directory/config.$remote_user") {
3857 $module_config_file = "$module_config_directory/config.$remote_user";
3859 elsif (&get_product_name() eq "usermin" &&
3860 (@ruinfo = getpwnam($remote_user)) &&
3861 ($rgroup = getgrgid($ruinfo[3])) &&
3862 -r "$module_config_directory/config.\@$rgroup") {
3863 # Based on group name
3864 $module_config_file = "$module_config_directory/config.\@$rgroup";
3868 $module_config_file = "$module_config_directory/config";
3871 &read_file_cached($module_config_file, \%config);
3873 # Fix up windows-specific substitutions in values
3874 foreach my $k (keys %config) {
3875 if ($config{$k} =~ /\$\{systemroot\}/) {
3876 my $root = &get_windows_root();
3877 $config{$k} =~ s/\$\{systemroot\}/$root/g;
3882 # Record the initial module
3883 $main::initial_module_name ||= $module_name;
3885 # Set some useful variables
3887 $current_themes = $ENV{'MOBILE_DEVICE'} && defined($gconfig{'mobile_theme'}) ?
3888 $gconfig{'mobile_theme'} :
3889 defined($gconfig{'theme_'.$remote_user}) ?
3890 $gconfig{'theme_'.$remote_user} :
3891 defined($gconfig{'theme_'.$base_remote_user}) ?
3892 $gconfig{'theme_'.$base_remote_user} :
3894 @current_themes = split(/\s+/, $current_themes);
3895 $current_theme = $current_themes[0];
3896 @theme_root_directories = map { "$root_directory/$_" } @current_themes;
3897 $theme_root_directory = $theme_root_directories[0];
3898 @theme_configs = ( );
3899 foreach my $troot (@theme_root_directories) {
3901 &read_file_cached("$troot/config", \%onetconfig);
3902 &read_file_cached("$troot/config", \%tconfig);
3903 push(@theme_configs, \%onetconfig);
3905 $tb = defined($tconfig{'cs_header'}) ? "bgcolor=#$tconfig{'cs_header'}" :
3906 defined($gconfig{'cs_header'}) ? "bgcolor=#$gconfig{'cs_header'}" :
3908 $cb = defined($tconfig{'cs_table'}) ? "bgcolor=#$tconfig{'cs_table'}" :
3909 defined($gconfig{'cs_table'}) ? "bgcolor=#$gconfig{'cs_table'}" :
3911 $tb .= ' '.$tconfig{'tb'} if ($tconfig{'tb'});
3912 $cb .= ' '.$tconfig{'cb'} if ($tconfig{'cb'});
3913 if ($tconfig{'preload_functions'}) {
3914 # Force load of theme functions right now, if requested
3915 &load_theme_library();
3917 if ($tconfig{'oofunctions'} && !$main::loaded_theme_oo_library++) {
3918 # Load the theme's Webmin:: package classes
3919 do "$theme_root_directory/$tconfig{'oofunctions'}";
3924 $webmin_logfile = $gconfig{'webmin_log'} ? $gconfig{'webmin_log'}
3925 : "$var_directory/webmin.log";
3927 # Load language strings into %text
3928 my @langs = &list_languages();
3930 if ($gconfig{'acceptlang'}) {
3931 foreach my $a (split(/,/, $ENV{'HTTP_ACCEPT_LANGUAGE'})) {
3932 my ($al) = grep { $_->{'lang'} eq $a } @langs;
3934 $accepted_lang = $al->{'lang'};
3939 $current_lang = $force_lang ? $force_lang :
3940 $accepted_lang ? $accepted_lang :
3941 $gconfig{"lang_$remote_user"} ? $gconfig{"lang_$remote_user"} :
3942 $gconfig{"lang_$base_remote_user"} ? $gconfig{"lang_$base_remote_user"} :
3943 $gconfig{"lang"} ? $gconfig{"lang"} : $default_lang;
3944 foreach my $l (@langs) {
3945 $current_lang_info = $l if ($l->{'lang'} eq $current_lang);
3947 @lang_order_list = &unique($default_lang,
3948 split(/:/, $current_lang_info->{'fallback'}),
3950 %text = &load_language($module_name);
3951 %text || &error("Failed to determine Webmin root from SERVER_ROOT, SCRIPT_FILENAME or the full command line");
3953 # Get the %module_info for this module
3955 my ($mi) = grep { $_->{'dir'} eq $module_name }
3956 &get_all_module_infos(2);
3957 %module_info = %$mi;
3958 $module_root_directory = &module_root_directory($module_name);
3961 if ($module_name && !$main::no_acl_check &&
3962 !defined($ENV{'FOREIGN_MODULE_NAME'})) {
3963 # Check if the HTTP user can access this module
3964 if (!&foreign_available($module_name)) {
3965 if (!&foreign_check($module_name)) {
3966 &error(&text('emodulecheck',
3967 "<i>$module_info{'desc'}</i>"));
3970 &error(&text('emodule', "<i>$u</i>",
3971 "<i>$module_info{'desc'}</i>"));
3974 $main::no_acl_check++;
3977 # Check the Referer: header for nasty redirects
3978 my @referers = split(/\s+/, $gconfig{'referers'});
3980 if ($ENV{'HTTP_REFERER'} =~/^(http|https|ftp):\/\/([^:\/]+:[^@\/]+@)?([^\/:@]+)/) {
3983 my $http_host = $ENV{'HTTP_HOST'};
3984 $http_host =~ s/:\d+$//;
3985 my $unsafe_index = $unsafe_index_cgi ||
3986 &get_module_variable('$unsafe_index_cgi');
3988 ($ENV{'SCRIPT_NAME'} !~ /^\/(index.cgi)?$/ || $unsafe_index) &&
3989 ($ENV{'SCRIPT_NAME'} !~ /^\/([a-z0-9\_\-]+)\/(index.cgi)?$/i ||
3991 $0 !~ /(session_login|pam_login)\.cgi$/ && !$gconfig{'referer'} &&
3992 $ENV{'MINISERV_CONFIG'} && !$main::no_referers_check &&
3993 $ENV{'HTTP_USER_AGENT'} !~ /^Webmin/i &&
3994 ($referer_site && $referer_site ne $http_host &&
3995 &indexof($referer_site, @referers) < 0 ||
3996 !$referer_site && $gconfig{'referers_none'}) &&
3997 !$trust_unknown_referers &&
3998 !&get_module_variable('$trust_unknown_referers')) {
3999 # Looks like a link from elsewhere .. show an error
4000 &header($text{'referer_title'}, "", undef, 0, 1, 1);
4002 $prot = lc($ENV{'HTTPS'}) eq 'on' ? "https" : "http";
4003 my $url = "<tt>".&html_escape("$prot://$ENV{'HTTP_HOST'}$ENV{'REQUEST_URI'}")."</tt>";
4004 if ($referer_site) {
4006 print &text('referer_warn',
4007 "<tt>".&html_escape($ENV{'HTTP_REFERER'})."</tt>", $url);
4009 print &text('referer_fix1', &html_escape($http_host)),"<p>\n";
4010 print &text('referer_fix2', &html_escape($http_host)),"<p>\n";
4013 # No referer info given
4014 print &text('referer_warn_unknown', $url),"<p>\n";
4015 print &text('referer_fix1u'),"<p>\n";
4016 print &text('referer_fix2u'),"<p>\n";
4020 &footer("/", $text{'index'});
4023 $main::no_referers_check++;
4024 $main::completed_referers_check++;
4026 # Call theme post-init
4027 if (defined(&theme_post_init_config)) {
4028 &theme_post_init_config(@_);
4031 # Record that we have done the calling library in this package
4032 my ($callpkg, $lib) = caller();
4034 $main::done_foreign_require{$callpkg,$lib} = 1;
4036 # If a licence checking is enabled, do it now
4037 if ($gconfig{'licence_module'} && !$main::done_licence_module_check &&
4038 &foreign_check($gconfig{'licence_module'}) &&
4039 -r "$root_directory/$gconfig{'licence_module'}/licence_check.pl") {
4040 my $oldpwd = &get_current_dir();
4041 $main::done_licence_module_check++;
4042 $main::licence_module = $gconfig{'licence_module'};
4043 &foreign_require($main::licence_module, "licence_check.pl");
4044 ($main::licence_status, $main::licence_message) =
4045 &foreign_call($main::licence_module, "check_licence");
4049 # Export global variables to caller
4050 if ($main::export_to_caller) {
4051 foreach my $v ('$config_file', '%gconfig', '$null_file',
4052 '$path_separator', '@root_directories',
4053 '$root_directory', '$module_name',
4054 '$base_remote_user', '$remote_user',
4055 '$module_config_directory', '$module_config_file',
4056 '%config', '@current_themes', '$current_theme',
4057 '@theme_root_directories', '$theme_root_directory',
4058 '%tconfig','@theme_configs', '$tb', '$cb', '$scriptname',
4059 '$webmin_logfile', '$current_lang',
4060 '$current_lang_info', '@lang_order_list', '%text',
4061 '%module_info', '$module_root_directory') {
4062 my ($vt, $vn) = split('', $v, 2);
4063 eval "${vt}${callpkg}::${vn} = ${vt}${vn}";
4070 =head2 load_language([module], [directory])
4072 Returns a hashtable mapping text codes to strings in the appropriate language,
4073 based on the $current_lang global variable, which is in turn set based on
4074 the Webmin user's selection. The optional module parameter tells the function
4075 which module to load strings for, and defaults to the calling module. The
4076 optional directory parameter can be used to load strings from a directory
4079 In regular module development you will never need to call this function
4080 directly, as init_config calls it for you, and places the module's strings
4081 into the %text hash.
4087 my $root = $root_directory;
4088 my $ol = $gconfig{'overlang'};
4089 my ($dir) = ($_[1] || "lang");
4091 # Read global lang files
4092 foreach my $o (@lang_order_list) {
4093 my $ok = &read_file_cached("$root/$dir/$o", \%text);
4094 return () if (!$ok && $o eq $default_lang);
4097 foreach my $o (@lang_order_list) {
4098 &read_file_cached("$root/$ol/$o", \%text);
4101 &read_file_cached("$config_directory/custom-lang", \%text);
4104 # Read module's lang files
4105 my $mdir = &module_root_directory($_[0]);
4106 foreach my $o (@lang_order_list) {
4107 &read_file_cached("$mdir/$dir/$o", \%text);
4110 foreach $o (@lang_order_list) {
4111 &read_file_cached("$mdir/$ol/$o", \%text);
4114 &read_file_cached("$config_directory/$_[0]/custom-lang", \%text);
4116 foreach $k (keys %text) {
4117 $text{$k} =~ s/\$(\{([^\}]+)\}|([A-Za-z0-9\.\-\_]+))/text_subs($2 || $3,\%text)/ge;
4120 if (defined(&theme_load_language)) {
4121 &theme_load_language(\%text, $_[0]);
4126 =head2 text_subs(string)
4128 Used internally by load_language to expand $code substitutions in language
4134 if (substr($_[0], 0, 8) eq "include:") {
4137 open(INCLUDE, substr($_[0], 8));
4145 my $t = $_[1]->{$_[0]};
4146 return defined($t) ? $t : '$'.$_[0];
4150 =head2 text(message, [substitute]+)
4152 Returns a translated message from %text, but with $1, $2, etc.. replaced with
4153 the substitute parameters. This makes it easy to use strings with placeholders
4154 that get replaced with programmatically generated text. For example :
4156 print &text('index_hello', $remote_user),"<p>\n";
4161 my $t = &get_module_variable('%text', 1);
4162 my $rv = exists($t->{$_[0]}) ? $t->{$_[0]} : $text{$_[0]};
4163 for(my $i=1; $i<@_; $i++) {
4164 $rv =~ s/\$$i/$_[$i]/g;
4169 =head2 encode_base64(string)
4171 Encodes a string into base64 format, for use in MIME email or HTTP
4172 authorization headers.
4178 pos($_[0]) = 0; # ensure start at the beginning
4179 while ($_[0] =~ /(.{1,57})/gs) {
4180 $res .= substr(pack('u57', $1), 1)."\n";
4183 $res =~ tr|\` -_|AA-Za-z0-9+/|;
4184 my $padding = (3 - length($_[0]) % 3) % 3;
4185 $res =~ s/.{$padding}$/'=' x $padding/e if ($padding);
4189 =head2 decode_base64(string)
4191 Converts a base64-encoded string into plain text. The opposite of encode_base64.
4198 $str =~ tr|A-Za-z0-9+=/||cd; # remove non-base64 chars
4199 if (length($str) % 4) {
4202 $str =~ s/=+$//; # remove padding
4203 $str =~ tr|A-Za-z0-9+/| -_|; # convert to uuencoded format
4204 while ($str =~ /(.{1,60})/gs) {
4205 my $len = chr(32 + length($1)*3/4); # compute length byte
4206 $res .= unpack("u", $len . $1 ); # uudecode
4211 =head2 get_module_info(module, [noclone], [forcache])
4213 Returns a hash containg details of the given module. Some useful keys are :
4215 =item dir - The module directory, like sendmail.
4217 =item desc - Human-readable description, in the current users' language.
4219 =item version - Optional module version number.
4221 =item os_support - List of supported operating systems and versions.
4223 =item category - Category on Webmin's left menu, like net.
4228 return () if ($_[0] =~ /^\./);
4229 my (%rv, $clone, $o);
4230 my $mdir = &module_root_directory($_[0]);
4231 &read_file_cached("$mdir/module.info", \%rv) || return ();
4233 foreach $o (@lang_order_list) {
4234 $rv{"desc"} = $rv{"desc_$o"} if ($rv{"desc_$o"});
4235 $rv{"longdesc"} = $rv{"longdesc_$o"} if ($rv{"longdesc_$o"});
4237 if ($clone && !$_[1] && $config_directory) {
4238 $rv{'clone'} = $rv{'desc'};
4239 &read_file("$config_directory/$_[0]/clone", \%rv);
4242 my %module_categories;
4243 &read_file_cached("$config_directory/webmin.cats", \%module_categories);
4244 my $pn = &get_product_name();
4245 if (defined($rv{'category_'.$pn})) {
4246 # Can override category for webmin/usermin
4247 $rv{'category'} = $rv{'category_'.$pn};
4249 $rv{'realcategory'} = $rv{'category'};
4250 $rv{'category'} = $module_categories{$_[0]}
4251 if (defined($module_categories{$_[0]}));
4253 # Apply description overrides
4254 $rv{'realdesc'} = $rv{'desc'};
4256 &read_file_cached("$config_directory/webmin.descs", \%descs);
4257 if ($descs{$_[0]." ".$current_lang}) {
4258 $rv{'desc'} = $descs{$_[0]." ".$current_lang};
4260 elsif ($descs{$_[0]}) {
4261 $rv{'desc'} = $descs{$_[0]};
4265 # Apply per-user description overridde
4266 my %gaccess = &get_module_acl(undef, "");
4267 if ($gaccess{'desc_'.$_[0]}) {
4268 $rv{'desc'} = $gaccess{'desc_'.$_[0]};
4272 if ($rv{'longdesc'}) {
4273 # All standard modules have an index.cgi
4274 $rv{'index_link'} = 'index.cgi';
4277 # Call theme-specific override function
4278 if (defined(&theme_get_module_info)) {
4279 %rv = &theme_get_module_info(\%rv, $_[0], $_[1], $_[2]);
4285 =head2 get_all_module_infos(cachemode)
4287 Returns a list contains the information on all modules in this webmin
4288 install, including clones. Uses caching to reduce the number of module.info
4289 files that need to be read. Each element of the array is a hash reference
4290 in the same format as returned by get_module_info. The cache mode flag can be :
4291 0 = read and write, 1 = don't read or write, 2 = read only
4294 sub get_all_module_infos
4298 # Is the cache out of date? (ie. have any of the root's changed?)
4299 my $cache_file = "$config_directory/module.infos.cache";
4301 if (&read_file_cached($cache_file, \%cache)) {
4302 foreach my $r (@root_directories) {
4304 if ($st[9] != $cache{'mtime_'.$r}) {
4314 if ($_[0] != 1 && !$changed && $cache{'lang'} eq $current_lang) {
4315 # Can use existing module.info cache
4317 foreach my $k (keys %cache) {
4318 if ($k =~ /^(\S+) (\S+)$/) {
4319 $mods{$1}->{$2} = $cache{$k};
4322 @rv = map { $mods{$_} } (keys %mods) if (%mods);
4325 # Need to rebuild cache
4327 foreach my $r (@root_directories) {
4329 foreach my $m (readdir(DIR)) {
4330 next if ($m =~ /^(config-|\.)/ || $m =~ /\.(cgi|pl)$/);
4331 my %minfo = &get_module_info($m, 0, 1);
4332 next if (!%minfo || !$minfo{'dir'});
4334 foreach $k (keys %minfo) {
4335 $cache{"${m} ${k}"} = $minfo{$k};
4340 $cache{'mtime_'.$r} = $st[9];
4342 $cache{'lang'} = $current_lang;
4343 &write_file($cache_file, \%cache) if (!$_[0] && $< == 0 && $> == 0);
4346 # Override descriptions for modules for current user
4347 my %gaccess = &get_module_acl(undef, "");
4348 foreach my $m (@rv) {
4349 if ($gaccess{"desc_".$m->{'dir'}}) {
4350 $m->{'desc'} = $gaccess{"desc_".$m->{'dir'}};
4354 # Apply installed flags
4356 &read_file_cached("$config_directory/installed.cache", \%installed);
4357 foreach my $m (@rv) {
4358 $m->{'installed'} = $installed{$m->{'dir'}};
4364 =head2 get_theme_info(theme)
4366 Returns a hash containing a theme's details, taken from it's theme.info file.
4367 Some useful keys are :
4369 =item dir - The theme directory, like blue-theme.
4371 =item desc - Human-readable description, in the current users' language.
4373 =item version - Optional module version number.
4375 =item os_support - List of supported operating systems and versions.
4380 return () if ($_[0] =~ /^\./);
4382 my $tdir = &module_root_directory($_[0]);
4383 &read_file("$tdir/theme.info", \%rv) || return ();
4384 foreach my $o (@lang_order_list) {
4385 $rv{"desc"} = $rv{"desc_$o"} if ($rv{"desc_$o"});
4391 =head2 list_languages
4393 Returns an array of supported languages, taken from Webmin's os_list.txt file.
4394 Each is a hash reference with the following keys :
4396 =item lang - The short language code, like es for Spanish.
4398 =item desc - A human-readable description, in English.
4400 =item charset - An optional character set to use when displaying the language.
4402 =item titles - Set to 1 only if Webmin has title images for the language.
4404 =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.
4409 if (!@main::list_languages_cache) {
4412 open(LANG, "$root_directory/lang_list.txt");
4414 if (/^(\S+)\s+(.*)/) {
4415 my $l = { 'desc' => $2 };
4416 foreach $o (split(/,/, $1)) {
4417 if ($o =~ /^([^=]+)=(.*)$/) {
4421 $l->{'index'} = scalar(@rv);
4422 push(@main::list_languages_cache, $l);
4426 @main::list_languages_cache = sort { $a->{'desc'} cmp $b->{'desc'} }
4427 @main::list_languages_cache;
4429 return @main::list_languages_cache;
4432 =head2 read_env_file(file, &hash)
4434 Similar to Webmin's read_file function, but handles files containing shell
4435 environment variables formatted like :
4440 The file parameter is the full path to the file to read, and hash a Perl hash
4441 ref to read names and values into.
4447 &open_readfile(FILE, $_[0]) || return 0;
4450 if (/^\s*(export\s*)?([A-Za-z0-9_\.]+)\s*=\s*"(.*)"/i ||
4451 /^\s*(export\s*)?([A-Za-z0-9_\.]+)\s*=\s*'(.*)'/i ||
4452 /^\s*(export\s*)?([A-Za-z0-9_\.]+)\s*=\s*(.*)/i) {
4460 =head2 write_env_file(file, &hash, [export])
4462 Writes out a hash to a file in name='value' format, suitable for use in a shell
4463 script. The parameters are :
4465 =item file - Full path for a file to write to
4467 =item hash - Hash reference of names and values to write.
4469 =item export - If set to 1, preceed each variable setting with the word 'export'.
4474 my $exp = $_[2] ? "export " : "";
4475 &open_tempfile(FILE, ">$_[0]");
4476 foreach my $k (keys %{$_[1]}) {
4477 my $v = $_[1]->{$k};
4478 if ($v =~ /^\S+$/) {
4479 &print_tempfile(FILE, "$exp$k=$v\n");
4482 &print_tempfile(FILE, "$exp$k=\"$v\"\n");
4485 &close_tempfile(FILE);
4488 =head2 lock_file(filename, [readonly], [forcefile])
4490 Lock a file for exclusive access. If the file is already locked, spin
4491 until it is freed. Uses a .lock file, which is not 100% reliable, but seems
4492 to work OK. The parameters are :
4494 =item filename - File or directory to lock.
4496 =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.
4498 =item forcefile - Force the file to be considered as a real file and not a symlink for Webmin actions logging purposes.
4503 my $realfile = &translate_filename($_[0]);
4504 return 0 if (!$_[0] || defined($main::locked_file_list{$realfile}));
4505 my $no_lock = !&can_lock_file($realfile);
4506 my $lock_tries_count = 0;
4509 if (!$no_lock && open(LOCKING, "$realfile.lock")) {
4514 if ($no_lock || !$pid || !kill(0, $pid) || $pid == $$) {
4517 # Create the .lock file
4518 open(LOCKING, ">$realfile.lock") || return 0;
4519 my $lck = eval "flock(LOCKING, 2+4)";
4521 # Lock of lock file failed! Wait till later
4524 print LOCKING $$,"\n";
4525 eval "flock(LOCKING, 8)";
4528 $main::locked_file_list{$realfile} = int($_[1]);
4529 push(@main::temporary_files, "$realfile.lock");
4530 if (($gconfig{'logfiles'} || $gconfig{'logfullfiles'}) &&
4531 !&get_module_variable('$no_log_file_changes') &&
4533 # Grab a copy of this file for later diffing
4535 $main::locked_file_data{$realfile} = undef;
4537 $main::locked_file_type{$realfile} = 1;
4538 $main::locked_file_data{$realfile} = '';
4540 elsif (!$_[2] && ($lnk = readlink($realfile))) {
4541 $main::locked_file_type{$realfile} = 2;
4542 $main::locked_file_data{$realfile} = $lnk;
4544 elsif (open(ORIGFILE, $realfile)) {
4545 $main::locked_file_type{$realfile} = 0;
4546 $main::locked_file_data{$realfile} = '';
4549 $main::locked_file_data{$realfile} .=$_;
4558 if ($lock_tries_count++ > 5*60) {
4559 # Give up after 5 minutes
4560 &error(&text('elock_tries', "<tt>$realfile</tt>", 5));
4566 =head2 unlock_file(filename)
4568 Release a lock on a file taken out by lock_file. If Webmin actions logging of
4569 file changes is enabled, then at unlock file a diff will be taken between the
4570 old and new contents, and stored under /var/webmin/diffs when webmin_log is
4571 called. This can then be viewed in the Webmin Actions Log module.
4576 my $realfile = &translate_filename($_[0]);
4577 return if (!$_[0] || !defined($main::locked_file_list{$realfile}));
4578 unlink("$realfile.lock") if (&can_lock_file($realfile));
4579 delete($main::locked_file_list{$realfile});
4580 if (exists($main::locked_file_data{$realfile})) {
4581 # Diff the new file with the old
4583 my $lnk = readlink($realfile);
4584 my $type = -d _ ? 1 : $lnk ? 2 : 0;
4585 my $oldtype = $main::locked_file_type{$realfile};
4586 my $new = !defined($main::locked_file_data{$realfile});
4587 if ($new && !-e _) {
4588 # file doesn't exist, and never did! do nothing ..
4590 elsif ($new && $type == 1 || !$new && $oldtype == 1) {
4591 # is (or was) a directory ..
4592 if (-d _ && !defined($main::locked_file_data{$realfile})) {
4593 push(@main::locked_file_diff,
4594 { 'type' => 'mkdir', 'object' => $realfile });
4596 elsif (!-d _ && defined($main::locked_file_data{$realfile})) {
4597 push(@main::locked_file_diff,
4598 { 'type' => 'rmdir', 'object' => $realfile });
4601 elsif ($new && $type == 2 || !$new && $oldtype == 2) {
4602 # is (or was) a symlink ..
4603 if ($lnk && !defined($main::locked_file_data{$realfile})) {
4604 push(@main::locked_file_diff,
4605 { 'type' => 'symlink', 'object' => $realfile,
4608 elsif (!$lnk && defined($main::locked_file_data{$realfile})) {
4609 push(@main::locked_file_diff,
4610 { 'type' => 'unsymlink', 'object' => $realfile,
4611 'data' => $main::locked_file_data{$realfile} });
4613 elsif ($lnk ne $main::locked_file_data{$realfile}) {
4614 push(@main::locked_file_diff,
4615 { 'type' => 'resymlink', 'object' => $realfile,
4620 # is a file, or has changed type?!
4621 my ($diff, $delete_file);
4622 my $type = "modify";
4624 open(NEWFILE, ">$realfile");
4629 if (!defined($main::locked_file_data{$realfile})) {
4632 open(ORIGFILE, ">$realfile.webminorig");
4633 print ORIGFILE $main::locked_file_data{$realfile};
4635 $diff = &backquote_command(
4636 "diff ".quotemeta("$realfile.webminorig")." ".
4637 quotemeta($realfile)." 2>/dev/null");
4638 push(@main::locked_file_diff,
4639 { 'type' => $type, 'object' => $realfile,
4640 'data' => $diff } ) if ($diff);
4641 unlink("$realfile.webminorig");
4642 unlink($realfile) if ($delete_file);
4645 if ($gconfig{'logfullfiles'}) {
4646 # Add file details to list of those to fully log
4647 $main::orig_file_data{$realfile} ||=
4648 $main::locked_file_data{$realfile};
4649 $main::orig_file_type{$realfile} ||=
4650 $main::locked_file_type{$realfile};
4653 delete($main::locked_file_data{$realfile});
4654 delete($main::locked_file_type{$realfile});
4658 =head2 test_lock(file)
4660 Returns 1 if some file is currently locked, 0 if not.
4665 my $realfile = &translate_filename($_[0]);
4666 return 0 if (!$_[0]);
4667 return 1 if (defined($main::locked_file_list{$realfile}));
4668 return 0 if (!&can_lock_file($realfile));
4670 if (open(LOCKING, "$realfile.lock")) {
4675 return $pid && kill(0, $pid);
4678 =head2 unlock_all_files
4680 Unlocks all files locked by the current script.
4683 sub unlock_all_files
4685 foreach $f (keys %main::locked_file_list) {
4690 =head2 can_lock_file(file)
4692 Returns 1 if some file should be locked, based on the settings in the
4693 Webmin Configuration module. For internal use by lock_file only.
4698 if (&is_readonly_mode()) {
4699 return 0; # never lock in read-only mode
4701 elsif ($gconfig{'lockmode'} == 0) {
4704 elsif ($gconfig{'lockmode'} == 1) {
4708 # Check if under any of the directories
4710 foreach my $d (split(/\t+/, $gconfig{'lockdirs'})) {
4711 if (&same_file($d, $_[0]) ||
4712 &is_under_directory($d, $_[0])) {
4716 return $gconfig{'lockmode'} == 2 ? $match : !$match;
4720 =head2 webmin_log(action, type, object, ¶ms, [module], [host, script-on-host, client-ip])
4722 Log some action taken by a user. This is typically called at the end of a
4723 script, once all file changes are complete and all commands run. The
4726 =item action - A short code for the action being performed, like 'create'.
4728 =item type - A code for the type of object the action is performed to, like 'user'.
4730 =item object - A short name for the object, like 'joe' if the Unix user 'joe' was just created.
4732 =item params - A hash ref of additional information about the action.
4734 =item module - Name of the module in which the action was performed, which defaults to the current module.
4736 =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.
4738 =item script-on-host - Script name like create_user.cgi on the host the action was performed on.
4740 =item client-ip - IP address of the browser that performed the action.
4745 return if (!$gconfig{'log'} || &is_readonly_mode());
4746 my $m = $_[4] ? $_[4] : &get_module_name();
4748 if ($gconfig{'logclear'}) {
4749 # check if it is time to clear the log
4750 my @st = stat("$webmin_logfile.time");
4751 my $write_logtime = 0;
4753 if ($st[9]+$gconfig{'logtime'}*60*60 < time()) {
4754 # clear logfile and all diff files
4755 &unlink_file("$ENV{'WEBMIN_VAR'}/diffs");
4756 &unlink_file("$ENV{'WEBMIN_VAR'}/files");
4757 &unlink_file("$ENV{'WEBMIN_VAR'}/annotations");
4758 unlink($webmin_logfile);
4765 if ($write_logtime) {
4766 open(LOGTIME, ">$webmin_logfile.time");
4767 print LOGTIME time(),"\n";
4772 # If an action script directory is defined, call the appropriate scripts
4773 if ($gconfig{'action_script_dir'}) {
4774 my ($action, $type, $object) = ($_[0], $_[1], $_[2]);
4775 my ($basedir) = $gconfig{'action_script_dir'};
4777 for my $dir ($basedir/$type/$action, $basedir/$type, $basedir) {
4780 opendir(DIR, $dir) or die "Can't open $dir: $!";
4781 while (defined($file = readdir(DIR))) {
4782 next if ($file =~ /^\.\.?$/); # skip '.' and '..'
4783 if (-x "$dir/$file") {
4784 # Call a script notifying it of the action
4786 $ENV{'ACTION_MODULE'} = &get_module_name();
4787 $ENV{'ACTION_ACTION'} = $_[0];
4788 $ENV{'ACTION_TYPE'} = $_[1];
4789 $ENV{'ACTION_OBJECT'} = $_[2];
4790 $ENV{'ACTION_SCRIPT'} = $script_name;
4791 foreach my $p (keys %param) {
4792 $ENV{'ACTION_PARAM_'.uc($p)} = $param{$p};
4794 system("$dir/$file", @_,
4795 "<$null_file", ">$null_file", "2>&1");
4803 # should logging be done at all?
4804 return if ($gconfig{'logusers'} && &indexof($base_remote_user,
4805 split(/\s+/, $gconfig{'logusers'})) < 0);
4806 return if ($gconfig{'logmodules'} && &indexof($m,
4807 split(/\s+/, $gconfig{'logmodules'})) < 0);
4811 my @tm = localtime($now);
4812 my $script_name = $0 =~ /([^\/]+)$/ ? $1 : '-';
4813 my $id = sprintf "%d.%d.%d", $now, $$, $main::action_id_count;
4814 $main::action_id_count++;
4815 my $line = sprintf "%s [%2.2d/%s/%4.4d %2.2d:%2.2d:%2.2d] %s %s %s %s %s \"%s\" \"%s\" \"%s\"",
4816 $id, $tm[3], $text{"smonth_".($tm[4]+1)}, $tm[5]+1900,
4817 $tm[2], $tm[1], $tm[0],
4818 $remote_user || '-',
4819 $main::session_id || '-',
4820 $_[7] || $ENV{'REMOTE_HOST'} || '-',
4821 $m, $_[5] ? "$_[5]:$_[6]" : $script_name,
4822 $_[0], $_[1] ne '' ? $_[1] : '-', $_[2] ne '' ? $_[2] : '-';
4824 foreach my $k (sort { $a cmp $b } keys %{$_[3]}) {
4825 my $v = $_[3]->{$k};
4831 elsif (ref($v) eq 'ARRAY') {
4835 $vv =~ s/(['"\\\r\n\t\%])/sprintf("%%%2.2X",ord($1))/ge;
4836 $line .= " $k='$vv'";
4840 foreach $vv (split(/\0/, $v)) {
4842 $vv =~ s/(['"\\\r\n\t\%])/sprintf("%%%2.2X",ord($1))/ge;
4843 $line .= " $k='$vv'";
4846 $param{$k} = join(" ", @pv);
4848 open(WEBMINLOG, ">>$webmin_logfile");
4849 print WEBMINLOG $line,"\n";
4851 if ($gconfig{'logperms'}) {
4852 chmod(oct($gconfig{'logperms'}), $webmin_logfile);
4855 chmod(0600, $webmin_logfile);
4858 if ($gconfig{'logfiles'} && !&get_module_variable('$no_log_file_changes')) {
4859 # Find and record the changes made to any locked files, or commands run
4861 mkdir("$ENV{'WEBMIN_VAR'}/diffs", 0700);
4862 foreach my $d (@main::locked_file_diff) {
4863 mkdir("$ENV{'WEBMIN_VAR'}/diffs/$id", 0700);
4864 open(DIFFLOG, ">$ENV{'WEBMIN_VAR'}/diffs/$id/$i");
4865 print DIFFLOG "$d->{'type'} $d->{'object'}\n";
4866 print DIFFLOG $d->{'data'};
4868 if ($d->{'input'}) {
4869 open(DIFFLOG, ">$ENV{'WEBMIN_VAR'}/diffs/$id/$i.input");
4870 print DIFFLOG $d->{'input'};
4873 if ($gconfig{'logperms'}) {
4874 chmod(oct($gconfig{'logperms'}),
4875 "$ENV{'WEBMIN_VAR'}/diffs/$id/$i",
4876 "$ENV{'WEBMIN_VAR'}/diffs/$id/$i.input");
4880 @main::locked_file_diff = undef;
4882 if ($gconfig{'logfullfiles'}) {
4883 # Save the original contents of any modified files
4885 mkdir("$ENV{'WEBMIN_VAR'}/files", 0700);
4886 foreach my $f (keys %main::orig_file_data) {
4887 mkdir("$ENV{'WEBMIN_VAR'}/files/$id", 0700);
4888 open(ORIGLOG, ">$ENV{'WEBMIN_VAR'}/files/$id/$i");
4889 if (!defined($main::orig_file_type{$f})) {
4890 print ORIGLOG -1," ",$f,"\n";
4893 print ORIGLOG $main::orig_file_type{$f}," ",$f,"\n";
4895 print ORIGLOG $main::orig_file_data{$f};
4897 if ($gconfig{'logperms'}) {
4898 chmod(oct($gconfig{'logperms'}),
4899 "$ENV{'WEBMIN_VAR'}/files/$id.$i");
4903 %main::orig_file_data = undef;
4904 %main::orig_file_type = undef;
4908 if ($gconfig{'logsyslog'}) {
4909 eval 'use Sys::Syslog qw(:DEFAULT setlogsock);
4910 openlog(&get_product_name(), "cons,pid,ndelay", "daemon");
4911 setlogsock("inet");';
4913 # Syslog module is installed .. try to convert to a
4914 # human-readable form
4916 my $mod = &get_module_name();
4917 my $mdir = module_root_directory($mod);
4918 if (-r "$mdir/log_parser.pl") {
4919 &foreign_require($mod, "log_parser.pl");
4921 foreach my $k (keys %{$_[3]}) {
4922 my $v = $_[3]->{$k};
4923 if (ref($v) eq 'ARRAY') {
4924 $params{$k} = join("\0", @$v);
4930 $msg = &foreign_call($mod, "parse_webmin_log",
4931 $remote_user, $script_name,
4932 $_[0], $_[1], $_[2], \%params);
4933 $msg =~ s/<[^>]*>//g; # Remove tags
4935 elsif ($_[0] eq "_config_") {
4936 my %wtext = &load_language("webminlog");
4937 $msg = $wtext{'search_config'};
4939 $msg ||= "$_[0] $_[1] $_[2]";
4940 my %info = &get_module_info($m);
4941 eval { syslog("info", "%s", "[$info{'desc'}] $msg"); };
4946 =head2 additional_log(type, object, data, [input])
4948 Records additional log data for an upcoming call to webmin_log, such
4949 as a command that was run or SQL that was executed. Typically you will never
4950 need to call this function directory.
4955 if ($gconfig{'logfiles'} && !&get_module_variable('$no_log_file_changes')) {
4956 push(@main::locked_file_diff,
4957 { 'type' => $_[0], 'object' => $_[1], 'data' => $_[2],
4958 'input' => $_[3] } );
4962 =head2 webmin_debug_log(type, message)
4964 Write something to the Webmin debug log. For internal use only.
4967 sub webmin_debug_log
4969 my ($type, $msg) = @_;
4970 return 0 if (!$main::opened_debug_log);
4971 return 0 if ($gconfig{'debug_no'.$main::webmin_script_type});
4972 if ($gconfig{'debug_modules'}) {
4973 my @dmods = split(/\s+/, $gconfig{'debug_modules'});
4974 return 0 if (&indexof($main::initial_module_name, @dmods) < 0);
4977 my @tm = localtime($now);
4979 "%s [%2.2d/%s/%4.4d %2.2d:%2.2d:%2.2d] %s %s %s %s \"%s\"",
4980 $$, $tm[3], $text{"smonth_".($tm[4]+1)}, $tm[5]+1900,
4981 $tm[2], $tm[1], $tm[0],
4982 $remote_user || "-",
4983 $ENV{'REMOTE_HOST'} || "-",
4984 &get_module_name() || "-",
4987 seek(main::DEBUGLOG, 0, 2);
4988 print main::DEBUGLOG $line."\n";
4992 =head2 system_logged(command)
4994 Just calls the Perl system() function, but also logs the command run.
4999 if (&is_readonly_mode()) {
5000 print STDERR "Vetoing command $_[0]\n";
5003 my @realcmd = ( &translate_command($_[0]), @_[1..$#_] );
5004 my $cmd = join(" ", @realcmd);
5006 if ($cmd =~ s/(\s*&\s*)$//) {
5009 while($cmd =~ s/(\d*)(<|>)((\/(tmp|dev)\S+)|&\d+)\s*$//) { }
5010 $cmd =~ s/^\((.*)\)\s*$/$1/;
5012 &additional_log('exec', undef, $cmd);
5013 return system(@realcmd);
5016 =head2 backquote_logged(command)
5018 Executes a command and returns the output (like `command`), but also logs it.
5021 sub backquote_logged
5023 if (&is_readonly_mode()) {
5025 print STDERR "Vetoing command $_[0]\n";
5028 my $realcmd = &translate_command($_[0]);
5031 if ($cmd =~ s/(\s*&\s*)$//) {
5034 while($cmd =~ s/(\d*)(<|>)((\/(tmp\/.webmin|dev)\S+)|&\d+)\s*$//) { }
5035 $cmd =~ s/^\((.*)\)\s*$/$1/;
5037 &additional_log('exec', undef, $cmd);
5038 &webmin_debug_log('CMD', "cmd=$cmd") if ($gconfig{'debug_what_cmd'});
5042 =head2 backquote_with_timeout(command, timeout, safe?, [maxlines])
5044 Runs some command, waiting at most the given number of seconds for it to
5045 complete, and returns the output. The maxlines parameter sets the number
5046 of lines of output to capture. The safe parameter should be set to 1 if the
5047 command is safe for read-only mode users to run.
5050 sub backquote_with_timeout
5052 my $realcmd = &translate_command($_[0]);
5053 &webmin_debug_log('CMD', "cmd=$realcmd timeout=$_[1]")
5054 if ($gconfig{'debug_what_cmd'});
5056 my $pid = &open_execute_command(OUT, "($realcmd) <$null_file", 1, $_[2]);
5061 my $elapsed = time() - $start;
5062 last if ($elapsed > $_[1]);
5064 vec($rmask, fileno(OUT), 1) = 1;
5065 my $sel = select($rmask, undef, undef, $_[1] - $elapsed);
5066 last if (!$sel || $sel < 0);
5068 last if (!defined($line));
5071 if ($_[3] && $linecount >= $_[3]) {
5076 if (kill('TERM', $pid) && time() - $start >= $_[1]) {
5080 return wantarray ? ($out, $timed_out) : $out;
5083 =head2 backquote_command(command, safe?)
5085 Executes a command and returns the output (like `command`), subject to
5086 command translation. The safe parameter should be set to 1 if the command
5087 is safe for read-only mode users to run.
5090 sub backquote_command
5092 if (&is_readonly_mode() && !$_[1]) {
5093 print STDERR "Vetoing command $_[0]\n";
5097 my $realcmd = &translate_command($_[0]);
5098 &webmin_debug_log('CMD', "cmd=$realcmd") if ($gconfig{'debug_what_cmd'});
5102 =head2 kill_logged(signal, pid, ...)
5104 Like Perl's built-in kill function, but also logs the fact that some process
5105 was killed. On Windows, falls back to calling process.exe to terminate a
5111 return scalar(@_)-1 if (&is_readonly_mode());
5112 &webmin_debug_log('KILL', "signal=$_[0] pids=".join(" ", @_[1..@_-1]))
5113 if ($gconfig{'debug_what_procs'});
5114 &additional_log('kill', $_[0], join(" ", @_[1..@_-1])) if (@_ > 1);
5115 if ($gconfig{'os_type'} eq 'windows') {
5116 # Emulate some kills with process.exe
5117 my $arg = $_[0] eq "KILL" ? "-k" :
5118 $_[0] eq "TERM" ? "-q" :
5119 $_[0] eq "STOP" ? "-s" :
5120 $_[0] eq "CONT" ? "-r" : undef;
5122 foreach my $p (@_[1..@_-1]) {
5124 $ok ||= kill($_[0], $p);
5127 &execute_command("process $arg $p");
5139 =head2 rename_logged(old, new)
5141 Re-names a file and logs the rename. If the old and new files are on different
5142 filesystems, calls mv or the Windows rename function to do the job.
5147 &additional_log('rename', $_[0], $_[1]) if ($_[0] ne $_[1]);
5148 return &rename_file($_[0], $_[1]);
5151 =head2 rename_file(old, new)
5153 Renames a file or directory. If the old and new files are on different
5154 filesystems, calls mv or the Windows rename function to do the job.
5159 if (&is_readonly_mode()) {
5160 print STDERR "Vetoing rename from $_[0] to $_[1]\n";
5163 my $src = &translate_filename($_[0]);
5164 my $dst = &translate_filename($_[1]);
5165 &webmin_debug_log('RENAME', "src=$src dst=$dst")
5166 if ($gconfig{'debug_what_ops'});
5167 my $ok = rename($src, $dst);
5168 if (!$ok && $! !~ /permission/i) {
5169 # Try the mv command, in case this is a cross-filesystem rename
5170 if ($gconfig{'os_type'} eq 'windows') {
5171 # Need to use rename
5172 my $out = &backquote_command("rename ".quotemeta($_[0]).
5173 " ".quotemeta($_[1])." 2>&1");
5175 $! = $out if (!$ok);
5179 my $out = &backquote_command("mv ".quotemeta($_[0]).
5180 " ".quotemeta($_[1])." 2>&1");
5182 $! = $out if (!$ok);
5188 =head2 symlink_logged(src, dest)
5190 Create a symlink, and logs it. Effectively does the same thing as the Perl
5197 my $rv = &symlink_file($_[0], $_[1]);
5198 &unlock_file($_[1]);
5202 =head2 symlink_file(src, dest)
5204 Creates a soft link, unless in read-only mode. Effectively does the same thing
5205 as the Perl symlink function.
5210 if (&is_readonly_mode()) {
5211 print STDERR "Vetoing symlink from $_[0] to $_[1]\n";
5214 my $src = &translate_filename($_[0]);
5215 my $dst = &translate_filename($_[1]);
5216 &webmin_debug_log('SYMLINK', "src=$src dst=$dst")
5217 if ($gconfig{'debug_what_ops'});
5218 return symlink($src, $dst);
5221 =head2 link_file(src, dest)
5223 Creates a hard link, unless in read-only mode. The existing new link file
5224 will be deleted if necessary. Effectively the same as Perl's link function.
5229 if (&is_readonly_mode()) {
5230 print STDERR "Vetoing link from $_[0] to $_[1]\n";
5233 my $src = &translate_filename($_[0]);
5234 my $dst = &translate_filename($_[1]);
5235 &webmin_debug_log('LINK', "src=$src dst=$dst")
5236 if ($gconfig{'debug_what_ops'});
5237 unlink($dst); # make sure link works
5238 return link($src, $dst);
5241 =head2 make_dir(dir, perms, recursive)
5243 Creates a directory and sets permissions on it, unless in read-only mode.
5244 The perms parameter sets the octal permissions to apply, which unlike Perl's
5245 mkdir will really get set. The recursive flag can be set to 1 to have the
5246 function create parent directories too.
5251 my ($dir, $perms, $recur) = @_;
5252 if (&is_readonly_mode()) {
5253 print STDERR "Vetoing directory $dir\n";
5256 $dir = &translate_filename($dir);
5257 my $exists = -d $dir ? 1 : 0;
5258 return 1 if ($exists && $recur); # already exists
5259 &webmin_debug_log('MKDIR', $dir) if ($gconfig{'debug_what_ops'});
5260 my $rv = mkdir($dir, $perms);
5261 if (!$rv && $recur) {
5262 # Failed .. try mkdir -p
5263 my $param = $gconfig{'os_type'} eq 'windows' ? "" : "-p";
5264 my $ex = &execute_command("mkdir $param "."e_path($dir));
5270 chmod($perms, $dir);
5275 =head2 set_ownership_permissions(user, group, perms, file, ...)
5277 Sets the user, group owner and permissions on some files. The parameters are :
5279 =item user - UID or username to change the file owner to. If undef, then the owner is not changed.
5281 =item group - GID or group name to change the file group to. If undef, then the group is set to the user's primary group.
5283 =item perms - Octal permissions set to set on the file. If undef, they are left alone.
5285 =item file - One or more files or directories to modify.
5288 sub set_ownership_permissions
5290 my ($user, $group, $perms, @files) = @_;
5291 if (&is_readonly_mode()) {
5292 print STDERR "Vetoing permission changes on ",join(" ", @files),"\n";
5295 @files = map { &translate_filename($_) } @files;
5296 if ($gconfig{'debug_what_ops'}) {
5297 foreach my $f (@files) {
5298 &webmin_debug_log('PERMS',
5299 "file=$f user=$user group=$group perms=$perms");
5303 if (defined($user)) {
5304 my $uid = $user !~ /^\d+$/ ? getpwnam($user) : $user;
5306 if (defined($group)) {
5307 $gid = $group !~ /^\d+$/ ? getgrnam($group) : $group;
5310 my @uinfo = getpwuid($uid);
5313 $rv = chown($uid, $gid, @files);
5315 if ($rv && defined($perms)) {
5316 $rv = chmod($perms, @files);
5321 =head2 unlink_logged(file, ...)
5323 Like Perl's unlink function, but locks the files beforehand and un-locks them
5324 after so that the deletion is logged by Webmin.
5330 foreach my $f (@_) {
5331 if (!&test_lock($f)) {
5336 my @rv = &unlink_file(@_);
5337 foreach my $f (@_) {
5342 return wantarray ? @rv : $rv[0];
5345 =head2 unlink_file(file, ...)
5347 Deletes some files or directories. Like Perl's unlink function, but also
5348 recursively deletes directories with the rm command if needed.
5353 return 1 if (&is_readonly_mode());
5356 foreach my $f (@_) {
5357 &unflush_file_lines($f);
5358 my $realf = &translate_filename($f);
5359 &webmin_debug_log('UNLINK', $realf) if ($gconfig{'debug_what_ops'});
5361 if (!rmdir($realf)) {
5363 if ($gconfig{'os_type'} eq 'windows') {
5364 # Call del and rmdir commands
5367 my $out = `del /q "$qm" 2>&1`;
5369 $out = `rmdir "$qm" 2>&1`;
5374 my $qm = quotemeta($realf);
5375 $out = `rm -rf $qm 2>&1`;
5384 if (!unlink($realf)) {
5390 return wantarray ? ($rv, $err) : $rv;
5393 =head2 copy_source_dest(source, dest)
5395 Copy some file or directory to a new location. Returns 1 on success, or 0
5396 on failure - also sets $! on failure. If the source is a directory, uses
5397 piped tar commands to copy a whole directory structure including permissions
5401 sub copy_source_dest
5403 return (1, undef) if (&is_readonly_mode());
5404 my ($src, $dst) = @_;
5407 &webmin_debug_log('COPY', "src=$src dst=$dst")
5408 if ($gconfig{'debug_what_ops'});
5409 if ($gconfig{'os_type'} eq 'windows') {
5410 # No tar or cp on windows, so need to use copy command
5414 $out = &backquote_logged("xcopy \"$src\" \"$dst\" /Y /E /I 2>&1");
5417 $out = &backquote_logged("copy /Y \"$src\" \"$dst\" 2>&1");
5425 # A directory .. need to copy with tar command
5426 my @st = stat($src);
5429 &set_ownership_permissions($st[4], $st[5], $st[2], $dst);
5430 $out = &backquote_logged("(cd ".quotemeta($src)." ; tar cf - . | (cd ".quotemeta($dst)." ; tar xf -)) 2>&1");
5437 # Can just copy with cp
5438 my $out = &backquote_logged("cp -p ".quotemeta($src).
5439 " ".quotemeta($dst)." 2>&1");
5445 return wantarray ? ($ok, $err) : $ok;
5448 =head2 remote_session_name(host|&server)
5450 Generates a session ID for some server. For this server, this will always
5451 be an empty string. For a server object it will include the hostname and
5452 port and PID. For a server name, it will include the hostname and PID. For
5456 sub remote_session_name
5458 return ref($_[0]) && $_[0]->{'host'} && $_[0]->{'port'} ?
5459 "$_[0]->{'host'}:$_[0]->{'port'}.$$" :
5460 $_[0] eq "" || ref($_[0]) && $_[0]->{'id'} == 0 ? "" :
5461 ref($_[0]) ? "" : "$_[0].$$";
5464 =head2 remote_foreign_require(server, module, file)
5466 Connects to rpc.cgi on a remote webmin server and have it open a session
5467 to a process that will actually do the require and run functions. This is the
5468 equivalent for foreign_require, but for a remote Webmin system. The server
5469 parameter can either be a hostname of a system registered in the Webmin
5470 Servers Index module, or a hash reference for a system from that module.
5473 sub remote_foreign_require
5475 my $call = { 'action' => 'require',
5478 my $sn = &remote_session_name($_[0]);
5479 if ($remote_session{$sn}) {
5480 $call->{'session'} = $remote_session{$sn};
5483 $call->{'newsession'} = 1;
5485 my $rv = &remote_rpc_call($_[0], $call);
5486 if ($rv->{'session'}) {
5487 $remote_session{$sn} = $rv->{'session'};
5488 $remote_session_server{$sn} = $_[0];
5492 =head2 remote_foreign_call(server, module, function, [arg]*)
5494 Call a function on a remote server. Must have been setup first with
5495 remote_foreign_require for the same server and module. Equivalent to
5496 foreign_call, but with the extra server parameter to specify the remote
5500 sub remote_foreign_call
5502 return undef if (&is_readonly_mode());
5503 my $sn = &remote_session_name($_[0]);
5504 return &remote_rpc_call($_[0], { 'action' => 'call',
5507 'session' => $remote_session{$sn},
5508 'args' => [ @_[3 .. $#_] ] } );
5511 =head2 remote_foreign_check(server, module, [api-only])
5513 Checks if some module is installed and supported on a remote server. Equivilant
5514 to foreign_check, but for the remote Webmin system specified by the server
5518 sub remote_foreign_check
5520 return &remote_rpc_call($_[0], { 'action' => 'check',
5525 =head2 remote_foreign_config(server, module)
5527 Gets the configuration for some module from a remote server, as a hash.
5528 Equivalent to foreign_config, but for a remote system.
5531 sub remote_foreign_config
5533 return &remote_rpc_call($_[0], { 'action' => 'config',
5534 'module' => $_[1] });
5537 =head2 remote_eval(server, module, code)
5539 Evaluates some perl code in the context of a module on a remote webmin server.
5540 The server parameter must be the hostname of a remote system, module must
5541 be a module directory name, and code a string of Perl code to run. This can
5542 only be called after remote_foreign_require for the same server and module.
5547 return undef if (&is_readonly_mode());
5548 my $sn = &remote_session_name($_[0]);
5549 return &remote_rpc_call($_[0], { 'action' => 'eval',
5552 'session' => $remote_session{$sn} });
5555 =head2 remote_write(server, localfile, [remotefile], [remotebasename])
5557 Transfers some local file to another server via Webmin's RPC protocol, and
5558 returns the resulting remote filename. If the remotefile parameter is given,
5559 that is the destination filename which will be used. Otherwise a randomly
5560 selected temporary filename will be used, and returned by the function.
5565 return undef if (&is_readonly_mode());
5567 my $sn = &remote_session_name($_[0]);
5568 if (!$_[0] || $remote_server_version{$sn} >= 0.966) {
5569 # Copy data over TCP connection
5570 my $rv = &remote_rpc_call($_[0], { 'action' => 'tcpwrite',
5572 'name' => $_[3] } );
5574 my $serv = ref($_[0]) ? $_[0]->{'host'} : $_[0];
5575 &open_socket($serv || "localhost", $rv->[1], TWRITE, \$error);
5576 return &$main::remote_error_handler("Failed to transfer file : $error")
5579 while(read(FILE, $got, 1024) > 0) {
5583 shutdown(TWRITE, 1);
5585 if ($error && $error !~ /^OK/) {
5586 # Got back an error!
5587 return &$main::remote_error_handler("Failed to transfer file : $error");
5593 # Just pass file contents as parameters
5595 while(read(FILE, $got, 1024) > 0) {
5599 return &remote_rpc_call($_[0], { 'action' => 'write',
5602 'session' => $remote_session{$sn} });
5606 =head2 remote_read(server, localfile, remotefile)
5608 Transfers a file from a remote server to this system, using Webmin's RPC
5609 protocol. The server parameter must be the hostname of a system registered
5610 in the Webmin Servers Index module, localfile is the destination path on this
5611 system, and remotefile is the file to fetch from the remote server.
5616 my $sn = &remote_session_name($_[0]);
5617 if (!$_[0] || $remote_server_version{$sn} >= 0.966) {
5618 # Copy data over TCP connection
5619 my $rv = &remote_rpc_call($_[0], { 'action' => 'tcpread',
5620 'file' => $_[2] } );
5622 return &$main::remote_error_handler("Failed to transfer file : $rv->[1]");
5625 my $serv = ref($_[0]) ? $_[0]->{'host'} : $_[0];
5626 &open_socket($serv || "localhost", $rv->[1], TREAD, \$error);
5627 return &$main::remote_error_handler("Failed to transfer file : $error")
5630 open(FILE, ">$_[1]");
5631 while(read(TREAD, $got, 1024) > 0) {
5638 # Just get data as return value
5639 my $d = &remote_rpc_call($_[0], { 'action' => 'read',
5641 'session' => $remote_session{$sn} });
5642 open(FILE, ">$_[1]");
5648 =head2 remote_finished
5650 Close all remote sessions. This happens automatically after a while
5651 anyway, but this function should be called to clean things up faster.
5656 foreach my $sn (keys %remote_session) {
5657 my $server = $remote_session_server{$sn};
5658 &remote_rpc_call($server, { 'action' => 'quit',
5659 'session' => $remote_session{$sn} } );
5660 delete($remote_session{$sn});
5661 delete($remote_session_server{$sn});
5663 foreach $fh (keys %fast_fh_cache) {
5665 delete($fast_fh_cache{$fh});
5669 =head2 remote_error_setup(&function)
5671 Sets a function to be called instead of &error when a remote RPC operation
5672 fails. Useful if you want to have more control over your remote operations.
5675 sub remote_error_setup
5677 $main::remote_error_handler = $_[0] || \&error;
5680 =head2 remote_rpc_call(server, structure)
5682 Calls rpc.cgi on some server and passes it a perl structure (hash,array,etc)
5683 and then reads back a reply structure. This is mainly for internal use only,
5684 and is called by the other remote_* functions.
5690 my $sn = &remote_session_name($_[0]); # Will be undef for local connection
5692 # Server structure was given
5694 $serv->{'user'} || $serv->{'id'} == 0 ||
5695 return &$main::remote_error_handler(
5696 "No Webmin login set for server");
5699 # lookup the server in the webmin servers module if needed
5700 if (!%main::remote_servers_cache) {
5701 &foreign_require("servers", "servers-lib.pl");
5702 foreach $s (&foreign_call("servers", "list_servers")) {
5703 $main::remote_servers_cache{$s->{'host'}} = $s;
5704 $main::remote_servers_cache{$s->{'host'}.":".$s->{'port'}} = $s;
5707 $serv = $main::remote_servers_cache{$_[0]};
5708 $serv || return &$main::remote_error_handler(
5709 "No Webmin Servers entry for $_[0]");
5710 $serv->{'user'} || return &$main::remote_error_handler(
5711 "No login set for server $_[0]");
5713 my $ip = $serv->{'ip'} || $serv->{'host'};
5715 # Work out the username and password
5717 if ($serv->{'sameuser'}) {
5718 $user = $remote_user;
5719 defined($main::remote_pass) || return &$main::remote_error_handler(
5720 "Password for this server is not available");
5721 $pass = $main::remote_pass;
5724 $user = $serv->{'user'};
5725 $pass = $serv->{'pass'};
5728 if ($serv->{'fast'} || !$sn) {
5729 # Make TCP connection call to fastrpc.cgi
5730 if (!$fast_fh_cache{$sn} && $sn) {
5731 # Need to open the connection
5732 my $con = &make_http_connection(
5733 $ip, $serv->{'port'}, $serv->{'ssl'},
5734 "POST", "/fastrpc.cgi");
5735 return &$main::remote_error_handler(
5736 "Failed to connect to $serv->{'host'} : $con")
5738 &write_http_connection($con, "Host: $serv->{'host'}\r\n");
5739 &write_http_connection($con, "User-agent: Webmin\r\n");
5740 my $auth = &encode_base64("$user:$pass");
5742 &write_http_connection($con, "Authorization: basic $auth\r\n");
5743 &write_http_connection($con, "Content-length: ",
5744 length($tostr),"\r\n");
5745 &write_http_connection($con, "\r\n");
5746 &write_http_connection($con, $tostr);
5748 # read back the response
5749 my $line = &read_http_connection($con);
5750 $line =~ tr/\r\n//d;
5751 if ($line =~ /^HTTP\/1\..\s+401\s+/) {
5752 return &$main::remote_error_handler("Login to RPC server as $user rejected");
5754 $line =~ /^HTTP\/1\..\s+200\s+/ ||
5755 return &$main::remote_error_handler("HTTP error : $line");
5757 $line = &read_http_connection($con);
5758 $line =~ tr/\r\n//d;
5760 $line = &read_http_connection($con);
5761 if ($line =~ /^0\s+(.*)/) {
5762 return &$main::remote_error_handler("RPC error : $1");
5764 elsif ($line =~ /^1\s+(\S+)\s+(\S+)\s+(\S+)/ ||
5765 $line =~ /^1\s+(\S+)\s+(\S+)/) {
5766 # Started ok .. connect and save SID
5767 &close_http_connection($con);
5768 my ($port, $sid, $version, $error) = ($1, $2, $3);
5769 &open_socket($ip, $port, $sid, \$error);
5770 return &$main::remote_error_handler("Failed to connect to fastrpc.cgi : $error")
5772 $fast_fh_cache{$sn} = $sid;
5773 $remote_server_version{$sn} = $version;
5776 while($stuff = &read_http_connection($con)) {
5779 return &$main::remote_error_handler("Bad response from fastrpc.cgi : $line");
5782 elsif (!$fast_fh_cache{$sn}) {
5783 # Open the connection by running fastrpc.cgi locally
5784 pipe(RPCOUTr, RPCOUTw);
5788 open(STDOUT, ">&RPCOUTw");
5792 $ENV{'REQUEST_METHOD'} = 'GET';
5793 $ENV{'SCRIPT_NAME'} = '/fastrpc.cgi';
5794 $ENV{'SERVER_ROOT'} ||= $root_directory;
5796 if ($base_remote_user ne 'root' &&
5797 $base_remote_user ne 'admin') {
5798 # Need to fake up a login for the CGI!
5799 &read_acl(undef, \%acl);
5800 $ENV{'BASE_REMOTE_USER'} =
5801 $ENV{'REMOTE_USER'} =
5802 $acl{'root'} ? 'root' : 'admin';
5804 delete($ENV{'FOREIGN_MODULE_NAME'});
5805 delete($ENV{'FOREIGN_ROOT_DIRECTORY'});
5806 chdir($root_directory);
5807 if (!exec("$root_directory/fastrpc.cgi")) {
5808 print "exec failed : $!\n";
5815 ($line = <RPCOUTr>) =~ tr/\r\n//d;
5819 if ($line =~ /^0\s+(.*)/) {
5820 return &$main::remote_error_handler("RPC error : $2");
5822 elsif ($line =~ /^1\s+(\S+)\s+(\S+)/) {
5823 # Started ok .. connect and save SID
5825 my ($port, $sid, $error) = ($1, $2, undef);
5826 &open_socket("localhost", $port, $sid, \$error);
5827 return &$main::remote_error_handler("Failed to connect to fastrpc.cgi : $error") if ($error);
5828 $fast_fh_cache{$sn} = $sid;
5835 &error("Bad response from fastrpc.cgi : $line");
5838 # Got a connection .. send off the request
5839 my $fh = $fast_fh_cache{$sn};
5840 my $tostr = &serialise_variable($_[1]);
5841 print $fh length($tostr)," $fh\n";
5843 my $rlen = int(<$fh>);
5844 my ($fromstr, $got);
5845 while(length($fromstr) < $rlen) {
5846 return &$main::remote_error_handler("Failed to read from fastrpc.cgi")
5847 if (read($fh, $got, $rlen - length($fromstr)) <= 0);
5850 my $from = &unserialise_variable($fromstr);
5852 return &$main::remote_error_handler("Remote Webmin error");
5854 if (defined($from->{'arv'})) {
5855 return @{$from->{'arv'}};
5858 return $from->{'rv'};
5862 # Call rpc.cgi on remote server
5863 my $tostr = &serialise_variable($_[1]);
5865 my $con = &make_http_connection($ip, $serv->{'port'},
5866 $serv->{'ssl'}, "POST", "/rpc.cgi");
5867 return &$main::remote_error_handler("Failed to connect to $serv->{'host'} : $con") if (!ref($con));
5869 &write_http_connection($con, "Host: $serv->{'host'}\r\n");
5870 &write_http_connection($con, "User-agent: Webmin\r\n");
5871 my $auth = &encode_base64("$user:$pass");
5873 &write_http_connection($con, "Authorization: basic $auth\r\n");
5874 &write_http_connection($con, "Content-length: ",length($tostr),"\r\n");
5875 &write_http_connection($con, "\r\n");
5876 &write_http_connection($con, $tostr);
5878 # read back the response
5879 my $line = &read_http_connection($con);
5880 $line =~ tr/\r\n//d;
5881 if ($line =~ /^HTTP\/1\..\s+401\s+/) {
5882 return &$main::remote_error_handler("Login to RPC server as $user rejected");
5884 $line =~ /^HTTP\/1\..\s+200\s+/ || return &$main::remote_error_handler("RPC HTTP error : $line");
5886 $line = &read_http_connection($con);
5887 $line =~ tr/\r\n//d;
5890 while($line = &read_http_connection($con)) {
5894 my $from = &unserialise_variable($fromstr);
5895 return &$main::remote_error_handler("Invalid RPC login to $serv->{'host'}") if (!$from->{'status'});
5896 if (defined($from->{'arv'})) {
5897 return @{$from->{'arv'}};
5900 return $from->{'rv'};
5905 =head2 remote_multi_callback(&servers, parallel, &function, arg|&args, &returns, &errors, [module, library])
5907 Executes some function in parallel on multiple servers at once. Fills in
5908 the returns and errors arrays respectively. If the module and library
5909 parameters are given, that module is remotely required on the server first,
5910 to check if it is connectable. The parameters are :
5912 =item servers - A list of Webmin system hash references.
5914 =item parallel - Number of parallel operations to perform.
5916 =item function - Reference to function to call for each system.
5918 =item args - Additional parameters to the function.
5920 =item returns - Array ref to place return values into, in same order as servers.
5922 =item errors - Array ref to place error messages into.
5924 =item module - Optional module to require on the remote system first.
5926 =item library - Optional library to require in the module.
5929 sub remote_multi_callback
5931 my ($servs, $parallel, $func, $args, $rets, $errs, $mod, $lib) = @_;
5932 &remote_error_setup(\&remote_multi_callback_error);
5934 # Call the functions
5936 foreach my $g (@$servs) {
5942 $remote_multi_callback_err = undef;
5944 # Require the remote lib
5945 &remote_foreign_require($g->{'host'}, $mod, $lib);
5946 if ($remote_multi_callback_err) {
5947 # Failed .. return error
5948 print $wh &serialise_variable(
5949 [ undef, $remote_multi_callback_err ]);
5955 my $a = ref($args) ? $args->[$p] : $args;
5956 my $rv = &$func($g, $a);
5959 print $wh &serialise_variable(
5960 [ $rv, $remote_multi_callback_err ]);
5968 # Read back the results
5970 foreach my $g (@$servs) {
5974 $errs->[$p] = "Failed to read response from $g->{'host'}";
5977 my $rv = &unserialise_variable($line);
5979 $rets->[$p] = $rv->[0];
5980 $errs->[$p] = $rv->[1];
5985 &remote_error_setup(undef);
5988 sub remote_multi_callback_error
5990 $remote_multi_callback_err = $_[0];
5993 =head2 serialise_variable(variable)
5995 Converts some variable (maybe a scalar, hash ref, array ref or scalar ref)
5996 into a url-encoded string. In the cases of arrays and hashes, it is recursively
5997 called on each member to serialize the entire object.
6000 sub serialise_variable
6002 if (!defined($_[0])) {
6008 $rv = &urlize($_[0]);
6010 elsif ($r eq 'SCALAR') {
6011 $rv = &urlize(${$_[0]});
6013 elsif ($r eq 'ARRAY') {
6014 $rv = join(",", map { &urlize(&serialise_variable($_)) } @{$_[0]});
6016 elsif ($r eq 'HASH') {
6017 $rv = join(",", map { &urlize(&serialise_variable($_)).",".
6018 &urlize(&serialise_variable($_[0]->{$_})) }
6021 elsif ($r eq 'REF') {
6022 $rv = &serialise_variable(${$_[0]});
6024 elsif ($r eq 'CODE') {
6029 # An object - treat as a hash
6030 $r = "OBJECT ".&urlize($r);
6031 $rv = join(",", map { &urlize(&serialise_variable($_)).",".
6032 &urlize(&serialise_variable($_[0]->{$_})) }
6035 return ($r ? $r : 'VAL').",".$rv;
6038 =head2 unserialise_variable(string)
6040 Converts a string created by serialise_variable() back into the original
6041 scalar, hash ref, array ref or scalar ref. If the original variable was a Perl
6042 object, the same class is used on this system, if available.
6045 sub unserialise_variable
6047 my @v = split(/,/, $_[0]);
6049 if ($v[0] eq 'VAL') {
6050 @v = split(/,/, $_[0], -1);
6051 $rv = &un_urlize($v[1]);
6053 elsif ($v[0] eq 'SCALAR') {
6054 local $r = &un_urlize($v[1]);
6057 elsif ($v[0] eq 'ARRAY') {
6059 for(my $i=1; $i<@v; $i++) {
6060 push(@$rv, &unserialise_variable(&un_urlize($v[$i])));
6063 elsif ($v[0] eq 'HASH') {
6065 for(my $i=1; $i<@v; $i+=2) {
6066 $rv->{&unserialise_variable(&un_urlize($v[$i]))} =
6067 &unserialise_variable(&un_urlize($v[$i+1]));
6070 elsif ($v[0] eq 'REF') {
6071 local $r = &unserialise_variable($v[1]);
6074 elsif ($v[0] eq 'UNDEF') {
6077 elsif ($v[0] =~ /^OBJECT\s+(.*)$/) {
6078 # An object hash that we have to re-bless
6081 for(my $i=1; $i<@v; $i+=2) {
6082 $rv->{&unserialise_variable(&un_urlize($v[$i]))} =
6083 &unserialise_variable(&un_urlize($v[$i+1]));
6091 =head2 other_groups(user)
6093 Returns a list of secondary groups a user is a member of, as a list of
6102 while(my @g = getgrent()) {
6103 my @m = split(/\s+/, $g[3]);
6104 push(@rv, $g[2]) if (&indexof($user, @m) >= 0);
6106 endgrent() if ($gconfig{'os_type'} ne 'hpux');
6110 =head2 date_chooser_button(dayfield, monthfield, yearfield)
6112 Returns HTML for a button that pops up a data chooser window. The parameters
6115 =item dayfield - Name of the text field to place the day of the month into.
6117 =item monthfield - Name of the select field to select the month of the year in, indexed from 1.
6119 =item yearfield - Name of the text field to place the year into.
6122 sub date_chooser_button
6124 return &theme_date_chooser_button(@_)
6125 if (defined(&theme_date_chooser_button));
6126 my ($w, $h) = (250, 225);
6127 if ($gconfig{'db_sizedate'}) {
6128 ($w, $h) = split(/x/, $gconfig{'db_sizedate'});
6130 return "<input type=button onClick='window.dfield = form.$_[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";
6133 =head2 help_file(module, file)
6135 Returns the path to a module's help file of some name, typically under the
6136 help directory with a .html extension.
6141 my $mdir = &module_root_directory($_[0]);
6142 my $dir = "$mdir/help";
6143 foreach my $o (@lang_order_list) {
6144 my $lang = "$dir/$_[1].$o.html";
6145 return $lang if (-r $lang);
6147 return "$dir/$_[1].html";
6152 Seeds the random number generator, if not already done in this script. On Linux
6153 this makes use of the current time, process ID and a read from /dev/urandom.
6154 On other systems, only the current time and process ID are used.
6159 if (!$main::done_seed_random) {
6160 if (open(RANDOM, "/dev/urandom")) {
6162 read(RANDOM, $buf, 4);
6164 srand(time() ^ $$ ^ $buf);
6169 $main::done_seed_random = 1;
6173 =head2 disk_usage_kb(directory)
6175 Returns the number of kB used by some directory and all subdirs. Implemented
6176 by calling the C<du -k> command.
6181 my $dir = &translate_filename($_[0]);
6183 my $ex = &execute_command("du -sk ".quotemeta($dir), undef, \$out, undef, 0, 1);
6185 &execute_command("du -s ".quotemeta($dir), undef, \$out, undef, 0, 1);
6187 return $out =~ /^([0-9]+)/ ? $1 : "???";
6190 =head2 recursive_disk_usage(directory, [skip-regexp], [only-regexp])
6192 Returns the number of bytes taken up by all files in some directory and all
6193 sub-directories, by summing up their lengths. The disk_usage_kb is more
6194 reflective of reality, as the filesystem typically pads file sizes to 1k or
6198 sub recursive_disk_usage
6200 my $dir = &translate_filename($_[0]);
6207 my @st = stat($dir);
6213 my @files = readdir(DIR);
6215 foreach my $f (@files) {
6216 next if ($f eq "." || $f eq "..");
6217 next if ($skip && $f =~ /$skip/);
6218 next if ($only && $f !~ /$only/);
6219 $rv += &recursive_disk_usage("$dir/$f", $skip, $only);
6225 =head2 help_search_link(term, [ section, ... ] )
6227 Returns HTML for a link to the man module for searching local and online
6228 docs for various search terms. The term parameter can either be a single
6229 word like 'bind', or a space-separated list of words. This function is typically
6230 used by modules that want to refer users to additional documentation in man
6231 pages or local system doc files.
6234 sub help_search_link
6236 if (&foreign_available("man") && !$tconfig{'nosearch'}) {
6237 my $for = &urlize(shift(@_));
6238 return "<a href='$gconfig{'webprefix'}/man/search.cgi?".
6239 join("&", map { "section=$_" } @_)."&".
6240 "for=$for&exact=1&check=".&get_module_name()."'>".
6241 $text{'helpsearch'}."</a>\n";
6248 =head2 make_http_connection(host, port, ssl, method, page, [&headers])
6250 Opens a connection to some HTTP server, maybe through a proxy, and returns
6251 a handle object. The handle can then be used to send additional headers
6252 and read back a response. If anything goes wrong, returns an error string.
6253 The parameters are :
6255 =item host - Hostname or IP address of the webserver to connect to.
6257 =item port - HTTP port number to connect to.
6259 =item ssl - Set to 1 to connect in SSL mode.
6261 =item method - HTTP method, like GET or POST.
6263 =item page - Page to request on the webserver, like /foo/index.html
6265 =item headers - Array ref of additional HTTP headers, each of which is a 2-element array ref.
6268 sub make_http_connection
6270 my ($host, $port, $ssl, $method, $page, $headers) = @_;
6273 foreach my $h (@$headers) {
6274 $htxt .= $h->[0].": ".$h->[1]."\r\n";
6278 if (&is_readonly_mode()) {
6279 return "HTTP connections not allowed in readonly mode";
6281 my $rv = { 'fh' => time().$$ };
6284 eval "use Net::SSLeay";
6285 $@ && return $text{'link_essl'};
6286 eval "Net::SSLeay::SSLeay_add_ssl_algorithms()";
6287 eval "Net::SSLeay::load_error_strings()";
6288 $rv->{'ssl_ctx'} = Net::SSLeay::CTX_new() ||
6289 return "Failed to create SSL context";
6290 $rv->{'ssl_con'} = Net::SSLeay::new($rv->{'ssl_ctx'}) ||
6291 return "Failed to create SSL connection";
6293 if ($gconfig{'http_proxy'} =~ /^http:\/\/(\S+):(\d+)/ &&
6294 !&no_proxy($host)) {
6297 &open_socket($1, $2, $rv->{'fh'}, \$error);
6300 my $fh = $rv->{'fh'};
6301 print $fh "CONNECT $host:$port HTTP/1.0\r\n";
6302 if ($gconfig{'proxy_user'}) {
6303 my $auth = &encode_base64(
6304 "$gconfig{'proxy_user'}:".
6305 "$gconfig{'proxy_pass'}");
6306 $auth =~ tr/\r\n//d;
6307 print $fh "Proxy-Authorization: Basic $auth\r\n";
6311 if ($line =~ /^HTTP(\S+)\s+(\d+)\s+(.*)/) {
6312 return "Proxy error : $3" if ($2 != 200);
6315 return "Proxy error : $line";
6320 elsif (!$gconfig{'proxy_fallback'}) {
6321 # Connection to proxy failed - give up
6328 &open_socket($host, $port, $rv->{'fh'}, \$error);
6329 return $error if ($error);
6331 Net::SSLeay::set_fd($rv->{'ssl_con'}, fileno($rv->{'fh'}));
6332 Net::SSLeay::connect($rv->{'ssl_con'}) ||
6333 return "SSL connect() failed";
6334 my $rtxt = "$method $page HTTP/1.0\r\n".$htxt;
6335 Net::SSLeay::write($rv->{'ssl_con'}, $rtxt);
6338 # Plain HTTP request
6340 if ($gconfig{'http_proxy'} =~ /^http:\/\/(\S+):(\d+)/ &&
6341 !&no_proxy($host)) {
6344 &open_socket($1, $2, $rv->{'fh'}, \$error);
6348 my $fh = $rv->{'fh'};
6349 my $rtxt = $method." ".
6350 "http://$host:$port$page HTTP/1.0\r\n";
6351 if ($gconfig{'proxy_user'}) {
6352 my $auth = &encode_base64(
6353 "$gconfig{'proxy_user'}:".
6354 "$gconfig{'proxy_pass'}");
6355 $auth =~ tr/\r\n//d;
6356 $rtxt .= "Proxy-Authorization: Basic $auth\r\n";
6361 elsif (!$gconfig{'proxy_fallback'}) {
6366 # Connecting directly
6368 &open_socket($host, $port, $rv->{'fh'}, \$error);
6369 return $error if ($error);
6370 my $fh = $rv->{'fh'};
6371 my $rtxt = "$method $page HTTP/1.0\r\n".$htxt;
6378 =head2 read_http_connection(&handle, [bytes])
6380 Reads either one line or up to the specified number of bytes from the handle,
6381 originally supplied by make_http_connection.
6384 sub read_http_connection
6388 if ($h->{'ssl_con'}) {
6391 while(($idx = index($h->{'buffer'}, "\n")) < 0) {
6392 # need to read more..
6393 if (!($more = Net::SSLeay::read($h->{'ssl_con'}))) {
6395 $rv = $h->{'buffer'};
6396 delete($h->{'buffer'});
6399 $h->{'buffer'} .= $more;
6401 $rv = substr($h->{'buffer'}, 0, $idx+1);
6402 $h->{'buffer'} = substr($h->{'buffer'}, $idx+1);
6405 if (length($h->{'buffer'})) {
6406 $rv = $h->{'buffer'};
6407 delete($h->{'buffer'});
6410 $rv = Net::SSLeay::read($h->{'ssl_con'}, $_[1]);
6416 read($h->{'fh'}, $rv, $_[1]) > 0 || return undef;
6419 my $fh = $h->{'fh'};
6423 $rv = undef if ($rv eq "");
6427 =head2 write_http_connection(&handle, [data+])
6429 Writes the given data to the given HTTP connection handle.
6432 sub write_http_connection
6435 my $fh = $h->{'fh'};
6437 if ($h->{'ssl_ctx'}) {
6438 foreach my $s (@_) {
6439 my $ok = Net::SSLeay::write($h->{'ssl_con'}, $s);
6440 $allok = 0 if (!$ok);
6444 my $ok = (print $fh @_);
6445 $allok = 0 if (!$ok);
6450 =head2 close_http_connection(&handle)
6452 Closes a connection to an HTTP server, identified by the given handle.
6455 sub close_http_connection
6461 =head2 clean_environment
6463 Deletes any environment variables inherited from miniserv so that they
6464 won't be passed to programs started by webmin. This is useful when calling
6465 programs that check for CGI-related environment variables and modify their
6466 behaviour, and to avoid passing sensitive variables to un-trusted programs.
6469 sub clean_environment
6471 %UNCLEAN_ENV = %ENV;
6472 foreach my $k (keys %ENV) {
6473 if ($k =~ /^(HTTP|VIRTUALSERVER|QUOTA|USERADMIN)_/) {
6477 foreach my $e ('WEBMIN_CONFIG', 'SERVER_NAME', 'CONTENT_TYPE', 'REQUEST_URI',
6478 'PATH_INFO', 'WEBMIN_VAR', 'REQUEST_METHOD', 'GATEWAY_INTERFACE',
6479 'QUERY_STRING', 'REMOTE_USER', 'SERVER_SOFTWARE', 'SERVER_PROTOCOL',
6480 'REMOTE_HOST', 'SERVER_PORT', 'DOCUMENT_ROOT', 'SERVER_ROOT',
6481 'MINISERV_CONFIG', 'SCRIPT_NAME', 'SERVER_ADMIN', 'CONTENT_LENGTH',
6482 'HTTPS', 'FOREIGN_MODULE_NAME', 'FOREIGN_ROOT_DIRECTORY',
6483 'SCRIPT_FILENAME', 'PATH_TRANSLATED', 'BASE_REMOTE_USER',
6484 'DOCUMENT_REALROOT', 'MINISERV_CONFIG', 'MYSQL_PWD',
6490 =head2 reset_environment
6492 Puts the environment back how it was before clean_environment was callled.
6495 sub reset_environment
6498 foreach my $k (keys %UNCLEAN_ENV) {
6499 $ENV{$k} = $UNCLEAN_ENV{$k};
6501 undef(%UNCLEAN_ENV);
6505 =head2 progress_callback
6507 Never called directly, but useful for passing to &http_download to print
6508 out progress of an HTTP request.
6511 sub progress_callback
6513 if (defined(&theme_progress_callback)) {
6514 # Call the theme override
6515 return &theme_progress_callback(@_);
6519 print $progress_callback_prefix;
6521 $progress_size = $_[1];
6522 $progress_step = int($_[1] / 10);
6523 print &text('progress_size2', $progress_callback_url,
6524 &nice_size($progress_size)),"<br>\n";
6527 print &text('progress_nosize', $progress_callback_url),"<br>\n";
6529 $last_progress_time = $last_progress_size = undef;
6531 elsif ($_[0] == 3) {
6533 my $sp = $progress_callback_prefix.(" " x 5);
6534 if ($progress_size) {
6535 # And we have a size to compare against
6536 my $st = int(($_[1] * 10) / $progress_size);
6537 my $time_now = time();
6538 if ($st != $progress_step ||
6539 $time_now - $last_progress_time > 60) {
6540 # Show progress every 10% or 60 seconds
6541 print $sp,&text('progress_datan', &nice_size($_[1]),
6542 int($_[1]*100/$progress_size)),"<br>\n";
6543 $last_progress_time = $time_now;
6545 $progress_step = $st;
6548 # No total size .. so only show in 100k jumps
6549 if ($_[1] > $last_progress_size+100*1024) {
6550 print $sp,&text('progress_data2n',
6551 &nice_size($_[1])),"<br>\n";
6552 $last_progress_size = $_[1];
6556 elsif ($_[0] == 4) {
6557 # All done downloading
6558 print $progress_callback_prefix,&text('progress_done'),"<br>\n";
6560 elsif ($_[0] == 5) {
6561 # Got new location after redirect
6562 $progress_callback_url = $_[1];
6564 elsif ($_[0] == 6) {
6566 $progress_callback_url = $_[1];
6567 print &text('progress_incache', $progress_callback_url),"<br>\n";
6571 =head2 switch_to_remote_user
6573 Changes the user and group of the current process to that of the unix user
6574 with the same name as the current webmin login, or fails if there is none.
6575 This should be called by Usermin module scripts that only need to run with
6576 limited permissions.
6579 sub switch_to_remote_user
6581 @remote_user_info = $remote_user ? getpwnam($remote_user) :
6583 @remote_user_info || &error(&text('switch_remote_euser', $remote_user));
6584 &create_missing_homedir(\@remote_user_info);
6586 &switch_to_unix_user(\@remote_user_info);
6587 $ENV{'USER'} = $ENV{'LOGNAME'} = $remote_user;
6588 $ENV{'HOME'} = $remote_user_info[7];
6590 # Export global variables to caller
6591 if ($main::export_to_caller) {
6592 my ($callpkg) = caller();
6593 eval "\@${callpkg}::remote_user_info = \@remote_user_info";
6597 =head2 switch_to_unix_user(&user-details)
6599 Switches the current process to the UID and group ID from the given list
6600 of user details, which must be in the format returned by getpwnam.
6603 sub switch_to_unix_user
6606 if (!defined($uinfo->[0])) {
6607 # No username given, so just use given GID
6608 ($(, $)) = ( $uinfo->[3], "$uinfo->[3] $uinfo->[3]" );
6611 # Use all groups from user
6612 ($(, $)) = ( $uinfo->[3],
6613 "$uinfo->[3] ".join(" ", $uinfo->[3],
6614 &other_groups($uinfo->[0])) );
6617 POSIX::setuid($uinfo->[2]);
6619 if ($< != $uinfo->[2] || $> != $uinfo->[2]) {
6620 ($>, $<) = ( $uinfo->[2], $uinfo->[2] );
6624 =head2 eval_as_unix_user(username, &code)
6626 Runs some code fragment with the effective UID and GID switch to that
6627 of the given Unix user, so that file IO takes place with his permissions.
6631 sub eval_as_unix_user
6633 my ($user, $code) = @_;
6634 my @uinfo = getpwnam($user);
6635 if (!scalar(@uinfo)) {
6636 &error("eval_as_unix_user called with invalid user $user");
6638 $) = $uinfo[3]." ".join(" ", $uinfo[3], &other_groups($user));
6642 local $main::error_must_die = 1;
6649 $err =~ s/\s+at\s+(\/\S+)\s+line\s+(\d+)\.?//;
6652 return wantarray ? @rv : $rv[0];
6655 =head2 create_user_config_dirs
6657 Creates per-user config directories and sets $user_config_directory and
6658 $user_module_config_directory to them. Also reads per-user module configs
6659 into %userconfig. This should be called by Usermin module scripts that need
6660 to store per-user preferences or other settings.
6663 sub create_user_config_dirs
6665 return if (!$gconfig{'userconfig'});
6666 my @uinfo = @remote_user_info ? @remote_user_info : getpwnam($remote_user);
6667 return if (!@uinfo || !$uinfo[7]);
6668 &create_missing_homedir(\@uinfo);
6669 $user_config_directory = "$uinfo[7]/$gconfig{'userconfig'}";
6670 if (!-d $user_config_directory) {
6671 mkdir($user_config_directory, 0700) ||
6672 &error("Failed to create $user_config_directory : $!");
6673 if ($< == 0 && $uinfo[2]) {
6674 chown($uinfo[2], $uinfo[3], $user_config_directory);
6677 if (&get_module_name()) {
6678 $user_module_config_directory = $user_config_directory."/".
6680 if (!-d $user_module_config_directory) {
6681 mkdir($user_module_config_directory, 0700) ||
6682 &error("Failed to create $user_module_config_directory : $!");
6683 if ($< == 0 && $uinfo[2]) {
6684 chown($uinfo[2], $uinfo[3], $user_config_directory);
6688 &read_file_cached("$module_root_directory/defaultuconfig",
6690 &read_file_cached("$module_config_directory/uconfig", \%userconfig);
6691 &read_file_cached("$user_module_config_directory/config",
6695 # Export global variables to caller
6696 if ($main::export_to_caller) {
6697 my ($callpkg) = caller();
6698 foreach my $v ('$user_config_directory',
6699 '$user_module_config_directory', '%userconfig') {
6700 my ($vt, $vn) = split('', $v, 2);
6701 eval "${vt}${callpkg}::${vn} = ${vt}${vn}";
6706 =head2 create_missing_homedir(&uinfo)
6708 If auto homedir creation is enabled, create one for this user if needed.
6709 For internal use only.
6712 sub create_missing_homedir
6715 if (!-e $uinfo->[7] && $gconfig{'create_homedir'}) {
6716 # Use has no home dir .. make one
6717 system("mkdir -p ".quotemeta($uinfo->[7]));
6718 chown($uinfo->[2], $uinfo->[3], $uinfo->[7]);
6719 if ($gconfig{'create_homedir_perms'} ne '') {
6720 chmod(oct($gconfig{'create_homedir_perms'}), $uinfo->[7]);
6725 =head2 filter_javascript(text)
6727 Disables all javascript <script>, onClick= and so on tags in the given HTML,
6728 and returns the new HTML. Useful for displaying HTML from an un-trusted source.
6731 sub filter_javascript
6734 $rv =~ s/<\s*script[^>]*>([\000-\377]*?)<\s*\/script\s*>//gi;
6735 $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;
6736 $rv =~ s/(javascript:)/x$1/gi;
6737 $rv =~ s/(vbscript:)/x$1/gi;
6741 =head2 resolve_links(path)
6743 Given a path that may contain symbolic links, returns the real path.
6749 $path =~ s/\/+/\//g;
6750 $path =~ s/\/$// if ($path ne "/");
6751 my @p = split(/\/+/, $path);
6753 for(my $i=0; $i<@p; $i++) {
6754 my $sofar = "/".join("/", @p[0..$i]);
6755 my $lnk = readlink($sofar);
6756 if ($lnk eq $sofar) {
6757 # Link to itself! Cannot do anything more really ..
6760 elsif ($lnk =~ /^\//) {
6761 # Link is absolute..
6762 return &resolve_links($lnk."/".join("/", @p[$i+1 .. $#p]));
6766 return &resolve_links("/".join("/", @p[0..$i-1])."/".$lnk."/".join("/", @p[$i+1 .. $#p]));
6772 =head2 simplify_path(path, bogus)
6774 Given a path, maybe containing elements ".." and "." , convert it to a
6775 clean, absolute form. Returns undef if this is not possible.
6783 my @bits = split(/\/+/, $dir);
6786 foreach my $b (@bits) {
6790 elsif ($b eq "..") {
6792 if (scalar(@fixedbits) == 0) {
6793 # Cannot! Already at root!
6800 push(@fixedbits, $b);
6803 return "/".join('/', @fixedbits);
6806 =head2 same_file(file1, file2)
6808 Returns 1 if two files are actually the same
6813 return 1 if ($_[0] eq $_[1]);
6814 return 0 if ($_[0] !~ /^\// || $_[1] !~ /^\//);
6815 my @stat1 = $stat_cache{$_[0]} ? @{$stat_cache{$_[0]}}
6816 : (@{$stat_cache{$_[0]}} = stat($_[0]));
6817 my @stat2 = $stat_cache{$_[1]} ? @{$stat_cache{$_[1]}}
6818 : (@{$stat_cache{$_[1]}} = stat($_[1]));
6819 return 0 if (!@stat1 || !@stat2);
6820 return $stat1[0] == $stat2[0] && $stat1[1] == $stat2[1];
6823 =head2 flush_webmin_caches
6825 Clears all in-memory and on-disk caches used by Webmin.
6828 sub flush_webmin_caches
6830 undef(%main::read_file_cache);
6831 undef(%main::acl_hash_cache);
6832 undef(%main::acl_array_cache);
6833 undef(%main::has_command_cache);
6834 undef(@main::list_languages_cache);
6835 undef($main::got_list_usermods_cache);
6836 undef(@main::list_usermods_cache);
6837 undef(%main::foreign_installed_cache);
6838 unlink("$config_directory/module.infos.cache");
6839 &get_all_module_infos();
6842 =head2 list_usermods
6844 Returns a list of additional module restrictions. For internal use in
6850 if (!$main::got_list_usermods_cache) {
6851 @main::list_usermods_cache = ( );
6853 open(USERMODS, "$config_directory/usermin.mods");
6855 if (/^([^:]+):(\+|-|):(.*)/) {
6856 push(@main::list_usermods_cache,
6857 [ $1, $2, [ split(/\s+/, $3) ] ]);
6861 $main::got_list_usermods_cache = 1;
6863 return @main::list_usermods_cache;
6866 =head2 available_usermods(&allmods, &usermods)
6868 Returns a list of modules that are available to the given user, based
6869 on usermod additional/subtractions. For internal use by Usermin only.
6872 sub available_usermods
6874 return @{$_[0]} if (!@{$_[1]});
6876 my %mods = map { $_->{'dir'}, 1 } @{$_[0]};
6877 my @uinfo = @remote_user_info;
6878 @uinfo = getpwnam($remote_user) if (!@uinfo);
6879 foreach my $u (@{$_[1]}) {
6881 if ($u->[0] eq "*" || $u->[0] eq $remote_user) {
6884 elsif ($u->[0] =~ /^\@(.*)$/) {
6885 # Check for group membership
6886 my @ginfo = getgrnam($1);
6887 $applies++ if (@ginfo && ($ginfo[2] == $uinfo[3] ||
6888 &indexof($remote_user, split(/\s+/, $ginfo[3])) >= 0));
6890 elsif ($u->[0] =~ /^\//) {
6891 # Check users and groups in file
6893 open(USERFILE, $u->[0]);
6896 if ($_ eq $remote_user) {
6899 elsif (/^\@(.*)$/) {
6900 my @ginfo = getgrnam($1);
6902 if (@ginfo && ($ginfo[2] == $uinfo[3] ||
6903 &indexof($remote_user,
6904 split(/\s+/, $ginfo[3])) >= 0));
6911 if ($u->[1] eq "+") {
6912 map { $mods{$_}++ } @{$u->[2]};
6914 elsif ($u->[1] eq "-") {
6915 map { delete($mods{$_}) } @{$u->[2]};
6919 map { $mods{$_}++ } @{$u->[2]};
6923 return grep { $mods{$_->{'dir'}} } @{$_[0]};
6926 =head2 get_available_module_infos(nocache)
6928 Returns a list of modules available to the current user, based on
6929 operating system support, access control and usermod restrictions. Useful
6930 in themes that need to display a list of modules the user can use.
6931 Each element of the returned array is a hash reference in the same format as
6932 returned by get_module_info.
6935 sub get_available_module_infos
6938 &read_acl(\%acl, \%uacl);
6939 my $risk = $gconfig{'risk_'.$base_remote_user};
6941 foreach my $minfo (&get_all_module_infos($_[0])) {
6942 next if (!&check_os_support($minfo));
6944 # Check module risk level
6945 next if ($risk ne 'high' && $minfo->{'risk'} &&
6946 $minfo->{'risk'} !~ /$risk/);
6950 next if (!$acl{$base_remote_user,$minfo->{'dir'}} &&
6951 !$acl{$base_remote_user,"*"});
6953 next if (&is_readonly_mode() && !$minfo->{'readonly'});
6957 # Check usermod restrictions
6958 my @usermods = &list_usermods();
6959 @rv = sort { $a->{'desc'} cmp $b->{'desc'} }
6960 &available_usermods(\@rv, \@usermods);
6962 # Check RBAC restrictions
6964 foreach my $m (@rv) {
6965 if (&supports_rbac($m->{'dir'}) &&
6966 &use_rbac_module_acl(undef, $m->{'dir'})) {
6967 local $rbacs = &get_rbac_module_acl($remote_user,
6975 # Module or system doesn't support RBAC
6976 push(@rbacrv, $m) if (!$gconfig{'rbacdeny_'.$base_remote_user});
6982 if (defined(&theme_foreign_available)) {
6983 foreach my $m (@rbacrv) {
6984 if (&theme_foreign_available($m->{'dir'})) {
6993 # Check licence module vetos
6995 if ($main::licence_module) {
6996 foreach my $m (@themerv) {
6997 if (&foreign_call($main::licence_module,
6998 "check_module_licence", $m->{'dir'})) {
7010 =head2 get_visible_module_infos(nocache)
7012 Like get_available_module_infos, but excludes hidden modules from the list.
7013 Each element of the returned array is a hash reference in the same format as
7014 returned by get_module_info.
7017 sub get_visible_module_infos
7020 my $pn = &get_product_name();
7021 return grep { !$_->{'hidden'} &&
7022 !$_->{$pn.'_hidden'} } &get_available_module_infos($nocache);
7025 =head2 get_visible_modules_categories(nocache)
7027 Returns a list of Webmin module categories, each of which is a hash ref
7028 with 'code', 'desc' and 'modules' keys. The modules value is an array ref
7029 of modules in the category, in the format returned by get_module_info.
7030 Un-used modules are automatically assigned to the 'unused' category, and
7031 those with no category are put into 'others'.
7034 sub get_visible_modules_categories
7037 my @mods = &get_visible_module_infos($nocache);
7039 if (&get_product_name() eq 'webmin') {
7040 @unmods = grep { $_->{'installed'} eq '0' } @mods;
7041 @mods = grep { $_->{'installed'} ne '0' } @mods;
7043 my %cats = &list_categories(\@mods);
7045 foreach my $c (keys %cats) {
7046 my $cat = { 'code' => $c || 'other',
7047 'desc' => $cats{$c} };
7048 $cat->{'modules'} = [ grep { $_->{'category'} eq $c } @mods ];
7051 @rv = sort { ($b->{'code'} eq "others" ? "" : $b->{'code'}) cmp
7052 ($a->{'code'} eq "others" ? "" : $a->{'code'}) } @rv;
7054 # Add un-installed modules in magic category
7055 my $cat = { 'code' => 'unused',
7056 'desc' => $text{'main_unused'},
7058 'modules' => \@unmods };
7064 =head2 is_under_directory(directory, file)
7066 Returns 1 if the given file is under the specified directory, 0 if not.
7067 Symlinks are taken into account in the file to find it's 'real' location.
7070 sub is_under_directory
7072 my ($dir, $file) = @_;
7073 return 1 if ($dir eq "/");
7074 return 0 if ($file =~ /\.\./);
7075 my $ld = &resolve_links($dir);
7077 return &is_under_directory($ld, $file);
7079 my $lp = &resolve_links($file);
7081 return &is_under_directory($dir, $lp);
7083 return 0 if (length($file) < length($dir));
7084 return 1 if ($dir eq $file);
7086 return substr($file, 0, length($dir)) eq $dir;
7089 =head2 parse_http_url(url, [basehost, baseport, basepage, basessl])
7091 Given an absolute URL, returns the host, port, page and ssl flag components.
7092 Relative URLs can also be parsed, if the base information is provided.
7097 if ($_[0] =~ /^(http|https):\/\/([^:\/]+)(:(\d+))?(\/\S*)?$/) {
7099 my $ssl = $1 eq 'https';
7100 return ($2, $3 ? $4 : $ssl ? 443 : 80, $5 || "/", $ssl);
7106 elsif ($_[0] =~ /^\/\S*$/) {
7107 # A relative to the server URL
7108 return ($_[1], $_[2], $_[0], $_[4]);
7111 # A relative to the directory URL
7113 $page =~ s/[^\/]+$//;
7114 return ($_[1], $_[2], $page.$_[0], $_[4]);
7118 =head2 check_clicks_function
7120 Returns HTML for a JavaScript function called check_clicks that returns
7121 true when first called, but false subsequently. Useful on onClick for
7122 critical buttons. Deprecated, as this method of preventing duplicate actions
7126 sub check_clicks_function
7131 function check_clicks(form)
7138 for(i=0; i<form.length; i++)
7139 form.elements[i].disabled = true;
7148 =head2 load_entities_map
7150 Returns a hash ref containing mappings between HTML entities (like ouml) and
7151 ascii values (like 246). Mainly for internal use.
7154 sub load_entities_map
7156 if (!%entities_map_cache) {
7158 open(EMAP, "$root_directory/entities_map.txt");
7160 if (/^(\d+)\s+(\S+)/) {
7161 $entities_map_cache{$2} = $1;
7166 return \%entities_map_cache;
7169 =head2 entities_to_ascii(string)
7171 Given a string containing HTML entities like ö and 7, replace them
7172 with their ASCII equivalents.
7175 sub entities_to_ascii
7178 my $emap = &load_entities_map();
7179 $str =~ s/&([a-z]+);/chr($emap->{$1})/ge;
7180 $str =~ s/&#(\d+);/chr($1)/ge;
7184 =head2 get_product_name
7186 Returns either 'webmin' or 'usermin', depending on which program the current
7187 module is in. Useful for modules that can be installed into either.
7190 sub get_product_name
7192 return $gconfig{'product'} if (defined($gconfig{'product'}));
7193 return defined($gconfig{'userconfig'}) ? 'usermin' : 'webmin';
7198 Returns the character set for the current language, such as iso-8859-1.
7203 my $charset = defined($gconfig{'charset'}) ? $gconfig{'charset'} :
7204 $current_lang_info->{'charset'} ?
7205 $current_lang_info->{'charset'} : $default_charset;
7209 =head2 get_display_hostname
7211 Returns the system's hostname for UI display purposes. This may be different
7212 from the actual hostname if you administrator has configured it so in the
7213 Webmin Configuration module.
7216 sub get_display_hostname
7218 if ($gconfig{'hostnamemode'} == 0) {
7219 return &get_system_hostname();
7221 elsif ($gconfig{'hostnamemode'} == 3) {
7222 return $gconfig{'hostnamedisplay'};
7225 my $h = $ENV{'HTTP_HOST'};
7227 if ($gconfig{'hostnamemode'} == 2) {
7228 $h =~ s/^(www|ftp|mail)\.//i;
7234 =head2 save_module_config([&config], [modulename])
7236 Saves the configuration for some module. The config parameter is an optional
7237 hash reference of names and values to save, which defaults to the global
7238 %config hash. The modulename parameter is the module to update the config
7239 file, which defaults to the current module.
7242 sub save_module_config
7244 my $c = $_[0] || { &get_module_variable('%config') };
7245 my $m = defined($_[1]) ? $_[1] : &get_module_name();
7246 &write_file("$config_directory/$m/config", $c);
7249 =head2 save_user_module_config([&config], [modulename])
7251 Saves the user's Usermin preferences for some module. The config parameter is
7252 an optional hash reference of names and values to save, which defaults to the
7253 global %userconfig hash. The modulename parameter is the module to update the
7254 config file, which defaults to the current module.
7257 sub save_user_module_config
7259 my $c = $_[0] || { &get_module_variable('%userconfig') };
7260 my $m = $_[1] || &get_module_name();
7261 my $ucd = $user_config_directory;
7263 my @uinfo = @remote_user_info ? @remote_user_info
7264 : getpwnam($remote_user);
7265 return if (!@uinfo || !$uinfo[7]);
7266 $ucd = "$uinfo[7]/$gconfig{'userconfig'}";
7268 &write_file("$ucd/$m/config", $c);
7271 =head2 nice_size(bytes, [min])
7273 Converts a number of bytes into a number followed by a suffix like GB, MB
7274 or kB. Rounding is to two decimal digits. The optional min parameter sets the
7275 smallest units to use - so you could pass 1024*1024 to never show bytes or kB.
7280 my ($units, $uname);
7281 if (abs($_[0]) > 1024*1024*1024*1024 || $_[1] >= 1024*1024*1024*1024) {
7282 $units = 1024*1024*1024*1024;
7285 elsif (abs($_[0]) > 1024*1024*1024 || $_[1] >= 1024*1024*1024) {
7286 $units = 1024*1024*1024;
7289 elsif (abs($_[0]) > 1024*1024 || $_[1] >= 1024*1024) {
7293 elsif (abs($_[0]) > 1024 || $_[1] >= 1024) {
7301 my $sz = sprintf("%.2f", ($_[0]*1.0 / $units));
7303 return $sz." ".$uname;
7306 =head2 get_perl_path
7308 Returns the path to Perl currently in use, such as /usr/bin/perl.
7313 if (open(PERL, "$config_directory/perl-path")) {
7319 return $^X if (-x $^X);
7320 return &has_command("perl");
7323 =head2 get_goto_module([&mods])
7325 Returns the details of a module that the current user should be re-directed
7326 to after logging in, or undef if none. Useful for themes.
7331 my @mods = $_[0] ? @{$_[0]} : &get_visible_module_infos();
7332 if ($gconfig{'gotomodule'}) {
7333 my ($goto) = grep { $_->{'dir'} eq $gconfig{'gotomodule'} } @mods;
7334 return $goto if ($goto);
7336 if (@mods == 1 && $gconfig{'gotoone'}) {
7342 =head2 select_all_link(field, form, [text])
7344 Returns HTML for a 'Select all' link that uses Javascript to select
7345 multiple checkboxes with the same name. The parameters are :
7347 =item field - Name of the checkbox inputs.
7349 =item form - Index of the form on the page.
7351 =item text - Message for the link, defaulting to 'Select all'.
7356 return &theme_select_all_link(@_) if (defined(&theme_select_all_link));
7357 my ($field, $form, $text) = @_;
7359 $text ||= $text{'ui_selall'};
7360 return "<a class='select_all' href='#' onClick='document.forms[$form].$field.checked = true; for(i=0; i<document.forms[$form].$field.length; i++) { document.forms[$form].${field}[i].checked = true; } return false'>$text</a>";
7363 =head2 select_invert_link(field, form, text)
7365 Returns HTML for an 'Invert selection' link that uses Javascript to invert the
7366 selection on multiple checkboxes with the same name. The parameters are :
7368 =item field - Name of the checkbox inputs.
7370 =item form - Index of the form on the page.
7372 =item text - Message for the link, defaulting to 'Invert selection'.
7375 sub select_invert_link
7377 return &theme_select_invert_link(@_) if (defined(&theme_select_invert_link));
7378 my ($field, $form, $text) = @_;
7380 $text ||= $text{'ui_selinv'};
7381 return "<a class='select_invert' href='#' onClick='document.forms[$form].$field.checked = !document.forms[$form].$field.checked; for(i=0; i<document.forms[$form].$field.length; i++) { document.forms[$form].${field}[i].checked = !document.forms[$form].${field}[i].checked; } return false'>$text</a>";
7384 =head2 select_rows_link(field, form, text, &rows)
7386 Returns HTML for a link that uses Javascript to select rows with particular
7387 values for their checkboxes. The parameters are :
7389 =item field - Name of the checkbox inputs.
7391 =item form - Index of the form on the page.
7393 =item text - Message for the link, de
7395 =item rows - Reference to an array of 1 or 0 values, indicating which rows to check.
7398 sub select_rows_link
7400 return &theme_select_rows_link(@_) if (defined(&theme_select_rows_link));
7401 my ($field, $form, $text, $rows) = @_;
7403 my $js = "var sel = { ".join(",", map { "\""."e_escape($_)."\":1" } @$rows)." }; ";
7404 $js .= "for(var i=0; i<document.forms[$form].${field}.length; i++) { var r = document.forms[$form].${field}[i]; r.checked = sel[r.value]; } ";
7405 $js .= "return false;";
7406 return "<a href='#' onClick='$js'>$text</a>";
7409 =head2 check_pid_file(file)
7411 Given a pid file, returns the PID it contains if the process is running.
7416 open(PIDFILE, $_[0]) || return undef;
7417 my $pid = <PIDFILE>;
7419 $pid =~ /^\s*(\d+)/ || return undef;
7420 kill(0, $1) || return undef;
7426 Return the local os-specific library name to this module. For internal use only.
7431 my $mn = &get_module_name();
7432 my $md = &module_root_directory($mn);
7433 if (-r "$md/$mn-$gconfig{'os_type'}-$gconfig{'os_version'}-lib.pl") {
7434 return "$mn-$gconfig{'os_type'}-$gconfig{'os_version'}-lib.pl";
7436 elsif (-r "$md/$mn-$gconfig{'os_type'}-lib.pl") {
7437 return "$mn-$gconfig{'os_type'}-lib.pl";
7439 elsif (-r "$md/$mn-generic-lib.pl") {
7440 return "$mn-generic-lib.pl";
7447 =head2 module_root_directory(module)
7449 Given a module name, returns its root directory. On a typical Webmin install,
7450 all modules are under the same directory - but it is theoretically possible to
7454 sub module_root_directory
7456 my $d = ref($_[0]) ? $_[0]->{'dir'} : $_[0];
7457 if (@root_directories > 1) {
7458 foreach my $r (@root_directories) {
7464 return "$root_directories[0]/$d";
7467 =head2 list_mime_types
7469 Returns a list of all known MIME types and their extensions, as a list of hash
7470 references with keys :
7472 =item type - The MIME type, like text/plain.
7474 =item exts - A list of extensions, like .doc and .avi.
7476 =item desc - A human-readable description for the MIME type.
7481 if (!@list_mime_types_cache) {
7483 open(MIME, "$root_directory/mime.types");
7487 if (s/#\s*(.*)$//g) {
7490 my ($type, @exts) = split(/\s+/);
7492 push(@list_mime_types_cache, { 'type' => $type,
7499 return @list_mime_types_cache;
7502 =head2 guess_mime_type(filename, [default])
7504 Given a file name like xxx.gif or foo.html, returns a guessed MIME type.
7505 The optional default parameter sets a default type of use if none is found,
7506 which defaults to application/octet-stream.
7511 if ($_[0] =~ /\.([A-Za-z0-9\-]+)$/) {
7513 foreach my $t (&list_mime_types()) {
7514 foreach my $e (@{$t->{'exts'}}) {
7515 return $t->{'type'} if (lc($e) eq lc($ext));
7519 return @_ > 1 ? $_[1] : "application/octet-stream";
7522 =head2 open_tempfile([handle], file, [no-error], [no-tempfile], [safe?])
7524 Opens a file handle for writing to a temporary file, which will only be
7525 renamed over the real file when the handle is closed. This allows critical
7526 files like /etc/shadow to be updated safely, even if writing fails part way
7527 through due to lack of disk space. The parameters are :
7529 =item handle - File handle to open, as you would use in Perl's open function.
7531 =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.
7533 =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 $! with the error code.
7535 =item no-tempfile - If set to 1, writing will be direct to the file instead of using a temporary file.
7537 =item safe - Indicates to users in read-only mode that this write is safe and non-destructive.
7543 # Just getting a temp file
7544 if (!defined($main::open_tempfiles{$_[0]})) {
7545 $_[0] =~ /^(.*)\/(.*)$/ || return $_[0];
7546 my $dir = $1 || "/";
7547 my $tmp = "$dir/$2.webmintmp.$$";
7548 $main::open_tempfiles{$_[0]} = $tmp;
7549 push(@main::temporary_files, $tmp);
7551 return $main::open_tempfiles{$_[0]};
7555 my ($fh, $file, $noerror, $notemp, $safe) = @_;
7556 $fh = &callers_package($fh);
7558 my %gaccess = &get_module_acl(undef, "");
7559 my $db = $gconfig{'debug_what_write'};
7560 if ($file =~ /\r|\n|\0/) {
7561 if ($noerror) { return 0; }
7562 else { &error("Filename contains invalid characters"); }
7564 if (&is_readonly_mode() && $file =~ />/ && !$safe) {
7565 # Read-only mode .. veto all writes
7566 print STDERR "vetoing write to $file\n";
7567 return open($fh, ">$null_file");
7569 elsif ($file =~ /^(>|>>|)nul$/i) {
7570 # Write to Windows null device
7571 &webmin_debug_log($1 eq ">" ? "WRITE" :
7572 $1 eq ">>" ? "APPEND" : "READ", "nul") if ($db);
7574 elsif ($file =~ /^(>|>>)(\/dev\/.*)/ || lc($file) eq "nul") {
7575 # Writes to /dev/null or TTYs don't need to be handled
7576 &webmin_debug_log($1 eq ">" ? "WRITE" : "APPEND", $2) if ($db);
7577 return open($fh, $file);
7579 elsif ($file =~ /^>\s*(([a-zA-Z]:)?\/.*)$/ && !$notemp) {
7580 &webmin_debug_log("WRITE", $1) if ($db);
7581 # Over-writing a file, via a temp file
7583 $file = &translate_filename($file);
7585 # Open the link target instead
7586 $file = &resolve_links($file);
7589 # Cannot open a directory!
7590 if ($noerror) { return 0; }
7591 else { &error("Cannot write to directory $file"); }
7593 my $tmp = &open_tempfile($file);
7594 my $ex = open($fh, ">$tmp");
7595 if (!$ex && $! =~ /permission/i) {
7596 # Could not open temp file .. try opening actual file
7598 $ex = open($fh, ">$file");
7599 delete($main::open_tempfiles{$file});
7602 $main::open_temphandles{$fh} = $file;
7605 if (!$ex && !$noerror) {
7606 &error(&text("efileopen", $file, $!));
7610 elsif ($file =~ /^>\s*(([a-zA-Z]:)?\/.*)$/ && $notemp) {
7611 # Just writing direct to a file
7612 &webmin_debug_log("WRITE", $1) if ($db);
7614 $file = &translate_filename($file);
7615 my @old_attributes = &get_clear_file_attributes($file);
7616 my $ex = open($fh, ">$file");
7617 &reset_file_attributes($file, \@old_attributes);
7618 $main::open_temphandles{$fh} = $file;
7619 if (!$ex && !$noerror) {
7620 &error(&text("efileopen", $file, $!));
7625 elsif ($file =~ /^>>\s*(([a-zA-Z]:)?\/.*)$/) {
7626 # Appending to a file .. nothing special to do
7627 &webmin_debug_log("APPEND", $1) if ($db);
7629 $file = &translate_filename($file);
7630 my @old_attributes = &get_clear_file_attributes($file);
7631 my $ex = open($fh, ">>$file");
7632 &reset_file_attributes($file, \@old_attributes);
7633 $main::open_temphandles{$fh} = $file;
7634 if (!$ex && !$noerror) {
7635 &error(&text("efileopen", $file, $!));
7640 elsif ($file =~ /^([a-zA-Z]:)?\//) {
7641 # Read mode .. nothing to do here
7642 &webmin_debug_log("READ", $file) if ($db);
7643 $file = &translate_filename($file);
7644 return open($fh, $file);
7646 elsif ($file eq ">" || $file eq ">>") {
7647 my ($package, $filename, $line) = caller;
7648 if ($noerror) { return 0; }
7649 else { &error("Missing file to open at ${package}::${filename} line $line"); }
7652 my ($package, $filename, $line) = caller;
7653 &error("Unsupported file or mode $file at ${package}::${filename} line $line");
7658 =head2 close_tempfile(file|handle)
7660 Copies a temp file to the actual file, assuming that all writes were
7661 successful. The handle must have been one passed to open_tempfile.
7667 my $fh = &callers_package($_[0]);
7669 if (defined($file = $main::open_temphandles{$fh})) {
7671 close($fh) || &error(&text("efileclose", $file, $!));
7672 delete($main::open_temphandles{$fh});
7673 return &close_tempfile($file);
7675 elsif (defined($main::open_tempfiles{$_[0]})) {
7677 &webmin_debug_log("CLOSE", $_[0]) if ($gconfig{'debug_what_write'});
7678 my @st = stat($_[0]);
7679 if (&is_selinux_enabled() && &has_command("chcon")) {
7680 # Set original security context
7681 system("chcon --reference=".quotemeta($_[0]).
7682 " ".quotemeta($main::open_tempfiles{$_[0]}).
7683 " >/dev/null 2>&1");
7685 my @old_attributes = &get_clear_file_attributes($_[0]);
7686 rename($main::open_tempfiles{$_[0]}, $_[0]) || &error("Failed to replace $_[0] with $main::open_tempfiles{$_[0]} : $!");
7688 # Set original permissions and ownership
7689 chmod($st[2], $_[0]);
7690 chown($st[4], $st[5], $_[0]);
7692 &reset_file_attributes($_[0], \@old_attributes);
7693 delete($main::open_tempfiles{$_[0]});
7694 @main::temporary_files = grep { $_ ne $main::open_tempfiles{$_[0]} } @main::temporary_files;
7695 if ($main::open_templocks{$_[0]}) {
7696 &unlock_file($_[0]);
7697 delete($main::open_templocks{$_[0]});
7702 # Must be closing a handle not associated with a file
7708 =head2 print_tempfile(handle, text, ...)
7710 Like the normal print function, but calls &error on failure. Useful when
7711 combined with open_tempfile, to ensure that a criticial file is never
7712 only partially written.
7717 my ($fh, @args) = @_;
7718 $fh = &callers_package($fh);
7719 (print $fh @args) || &error(&text("efilewrite",
7720 $main::open_temphandles{$fh} || $fh, $!));
7723 =head2 is_selinux_enabled
7725 Returns 1 if SElinux is supported on this system and enabled, 0 if not.
7728 sub is_selinux_enabled
7730 if (!defined($main::selinux_enabled_cache)) {
7732 if ($gconfig{'os_type'} !~ /-linux$/) {
7733 # Not on linux, so no way
7734 $main::selinux_enabled_cache = 0;
7736 elsif (&read_env_file("/etc/selinux/config", \%seconfig)) {
7737 # Use global config file
7738 $main::selinux_enabled_cache =
7739 $seconfig{'SELINUX'} eq 'disabled' ||
7740 !$seconfig{'SELINUX'} ? 0 : 1;
7743 # Use selinuxenabled command
7744 #$selinux_enabled_cache =
7745 # system("selinuxenabled >/dev/null 2>&1") ? 0 : 1;
7746 $main::selinux_enabled_cache = 0;
7749 return $main::selinux_enabled_cache;
7752 =head2 get_clear_file_attributes(file)
7754 Finds file attributes that may prevent writing, clears them and returns them
7755 as a list. May call error. Mainly for internal use by open_tempfile and
7759 sub get_clear_file_attributes
7763 if ($gconfig{'chattr'}) {
7764 # Get original immutable bit
7765 my $out = &backquote_command(
7766 "lsattr ".quotemeta($file)." 2>/dev/null");
7768 $out =~ s/\s\S+\n//;
7769 @old_attributes = grep { $_ ne '-' } split(//, $out);
7771 if (&indexof("i", @old_attributes) >= 0) {
7772 my $err = &backquote_logged(
7773 "chattr -i ".quotemeta($file)." 2>&1");
7775 &error("Failed to remove immutable bit on ".
7780 return @old_attributes;
7783 =head2 reset_file_attributes(file, &attributes)
7785 Put back cleared attributes on some file. May call error. Mainly for internal
7786 use by close_tempfile.
7789 sub reset_file_attributes
7791 my ($file, $old_attributes) = @_;
7792 if (&indexof("i", @$old_attributes) >= 0) {
7793 my $err = &backquote_logged(
7794 "chattr +i ".quotemeta($file)." 2>&1");
7796 &error("Failed to restore immutable bit on ".
7802 =head2 cleanup_tempnames
7804 Remove all temporary files generated using transname. Typically only called
7805 internally when a Webmin script exits.
7808 sub cleanup_tempnames
7810 foreach my $t (@main::temporary_files) {
7813 @main::temporary_files = ( );
7816 =head2 open_lock_tempfile([handle], file, [no-error])
7818 Returns a temporary file for writing to some actual file, and also locks it.
7819 Effectively the same as calling lock_file and open_tempfile on the same file,
7820 but calls the unlock for you automatically when it is closed.
7823 sub open_lock_tempfile
7825 my ($fh, $file, $noerror, $notemp, $safe) = @_;
7826 $fh = &callers_package($fh);
7827 my $lockfile = $file;
7828 $lockfile =~ s/^[^\/]*//;
7829 if ($lockfile =~ /^\//) {
7830 $main::open_templocks{$lockfile} = &lock_file($lockfile);
7832 return &open_tempfile($fh, $file, $noerror, $notemp, $safe);
7837 $main::end_exit_status ||= $?;
7838 if ($$ == $main::initial_process_id) {
7839 # Exiting from initial process
7840 &cleanup_tempnames();
7841 if ($gconfig{'debug_what_start'} && $main::debug_log_start_time &&
7842 $main::debug_log_start_module eq &get_module_name()) {
7843 my $len = time() - $main::debug_log_start_time;
7844 &webmin_debug_log("STOP", "runtime=$len");
7845 $main::debug_log_start_time = 0;
7847 if (!$ENV{'SCRIPT_NAME'} &&
7848 $main::initial_module_name eq &get_module_name()) {
7849 # In a command-line script - call the real exit, so that the
7850 # exit status gets properly propogated. In some cases this
7851 # was not happening.
7852 exit($main::end_exit_status);
7857 =head2 month_to_number(month)
7859 Converts a month name like feb to a number like 1.
7864 return $month_to_number_map{lc(substr($_[0], 0, 3))};
7867 =head2 number_to_month(number)
7869 Converts a number like 1 to a month name like Feb.
7874 return ucfirst($number_to_month_map{$_[0]});
7877 =head2 get_rbac_module_acl(user, module)
7879 Returns a hash reference of RBAC overrides ACLs for some user and module.
7880 May return undef if none exist (indicating access denied), or the string *
7881 if full access is granted.
7884 sub get_rbac_module_acl
7886 my ($user, $mod) = @_;
7887 eval "use Authen::SolarisRBAC";
7888 return undef if ($@);
7891 if (Authen::SolarisRBAC::chkauth("webmin.$mod.admin", $user)) {
7892 # Automagic webmin.modulename.admin authorization exists .. allow access
7894 if (!Authen::SolarisRBAC::chkauth("webmin.$mod.config", $user)) {
7895 %rv = ( 'noconfig' => 1 );
7902 open(RBAC, &module_root_directory($mod)."/rbac-mapping");
7906 my ($auths, $acls) = split(/\s+/, $_);
7907 my @auths = split(/,/, $auths);
7909 my ($merge) = ($acls =~ s/^\+//);
7911 if ($auths eq "*") {
7912 # These ACLs apply to all RBAC users.
7913 # Only if there is some that match a specific authorization
7914 # later will they be used though.
7917 # Check each of the RBAC authorizations
7918 foreach my $a (@auths) {
7919 if (!Authen::SolarisRBAC::chkauth($a, $user)) {
7924 $foundany++ if ($gotall);
7927 # Found an RBAC authorization - return the ACLs
7928 return "*" if ($acls eq "*");
7929 my %acl = map { split(/=/, $_, 2) } split(/,/, $acls);
7931 # Just add to current set
7932 foreach my $a (keys %acl) {
7943 return !$foundany ? undef : %rv ? \%rv : undef;
7946 =head2 supports_rbac([module])
7948 Returns 1 if RBAC client support is available, such as on Solaris.
7953 return 0 if ($gconfig{'os_type'} ne 'solaris');
7954 eval "use Authen::SolarisRBAC";
7957 #return 0 if (!-r &module_root_directory($_[0])."/rbac-mapping");
7962 =head2 use_rbac_module_acl(user, module)
7964 Returns 1 if some user should use RBAC to get permissions for a module
7967 sub use_rbac_module_acl
7969 my $u = defined($_[0]) ? $_[0] : $base_remote_user;
7970 my $m = defined($_[1]) ? $_[1] : &get_module_name();
7971 return 1 if ($gconfig{'rbacdeny_'.$u}); # RBAC forced for user
7972 my %access = &get_module_acl($u, $m, 1);
7973 return $access{'rbac'} ? 1 : 0;
7976 =head2 execute_command(command, stdin, stdout, stderr, translate-files?, safe?)
7978 Runs some command, possibly feeding it input and capturing output to the
7979 give files or scalar references. The parameters are :
7981 =item command - Full command to run, possibly including shell meta-characters.
7983 =item stdin - File to read input from, or a scalar ref containing input, or undef if no input should be given.
7985 =item stdout - File to write output to, or a scalar ref into which output should be placed, or undef if the output is to be discarded.
7987 =item stderr - File to write error output to, or a scalar ref into which error output should be placed, or undef if the error output is to be discarded.
7989 =item translate-files - Set to 1 to apply filename translation to any filenames. Usually has no effect.
7991 =item safe - Set to 1 if this command is safe and does not modify the state of the system.
7996 my ($cmd, $stdin, $stdout, $stderr, $trans, $safe) = @_;
7997 if (&is_readonly_mode() && !$safe) {
7998 print STDERR "Vetoing command $_[0]\n";
8002 $cmd = &translate_command($cmd);
8004 # Use ` operator where possible
8005 &webmin_debug_log('CMD', "cmd=$cmd") if ($gconfig{'debug_what_cmd'});
8006 if (!$stdin && ref($stdout) && !$stderr) {
8007 $cmd = "($cmd)" if ($gconfig{'os_type'} ne 'windows');
8008 $$stdout = `$cmd 2>$null_file`;
8011 elsif (!$stdin && ref($stdout) && $stdout eq $stderr) {
8012 $cmd = "($cmd)" if ($gconfig{'os_type'} ne 'windows');
8013 $$stdout = `$cmd 2>&1`;
8016 elsif (!$stdin && !$stdout && !$stderr) {
8017 $cmd = "($cmd)" if ($gconfig{'os_type'} ne 'windows');
8018 return system("$cmd >$null_file 2>$null_file <$null_file");
8022 $| = 1; # needed on some systems to flush before forking
8023 pipe(EXECSTDINr, EXECSTDINw);
8024 pipe(EXECSTDOUTr, EXECSTDOUTw);
8025 pipe(EXECSTDERRr, EXECSTDERRw);
8027 if (!($pid = fork())) {
8031 open(STDIN, "<&EXECSTDINr");
8032 open(STDOUT, ">&EXECSTDOUTw");
8033 if (ref($stderr) && $stderr eq $stdout) {
8034 open(STDERR, ">&EXECSTDOUTw");
8037 open(STDERR, ">&EXECSTDERRw");
8044 my $fullcmd = "($cmd)";
8045 if ($stdin && !ref($stdin)) {
8046 $fullcmd .= " <$stdin";
8048 if ($stdout && !ref($stdout)) {
8049 $fullcmd .= " >$stdout";
8051 if ($stderr && !ref($stderr)) {
8052 if ($stderr eq $stdout) {
8053 $fullcmd .= " 2>&1";
8056 $fullcmd .= " 2>$stderr";
8059 if ($gconfig{'os_type'} eq 'windows') {
8063 exec("/bin/sh", "-c", $fullcmd);
8065 print "Exec failed : $!\n";
8072 # Feed input and capture output
8074 if ($stdin && ref($stdin)) {
8075 print EXECSTDINw $$stdin;
8078 if ($stdout && ref($stdout)) {
8080 while(<EXECSTDOUTr>) {
8085 if ($stderr && ref($stderr) && $stderr ne $stdout) {
8087 while(<EXECSTDERRr>) {
8098 =head2 open_readfile(handle, file)
8100 Opens some file for reading. Returns 1 on success, 0 on failure. Pretty much
8101 exactly the same as Perl's open function.
8106 my ($fh, $file) = @_;
8107 $fh = &callers_package($fh);
8108 my $realfile = &translate_filename($file);
8109 &webmin_debug_log('READ', $file) if ($gconfig{'debug_what_read'});
8110 return open($fh, "<".$realfile);
8113 =head2 open_execute_command(handle, command, output?, safe?)
8115 Runs some command, with the specified file handle set to either write to it if
8116 in-or-out is set to 0, or read to it if output is set to 1. The safe flag
8117 indicates if the command modifies the state of the system or not.
8120 sub open_execute_command
8122 my ($fh, $cmd, $mode, $safe) = @_;
8123 $fh = &callers_package($fh);
8124 my $realcmd = &translate_command($cmd);
8125 if (&is_readonly_mode() && !$safe) {
8126 # Don't actually run it
8127 print STDERR "vetoing command $cmd\n";
8130 return open($fh, ">$null_file");
8133 return open($fh, $null_file);
8137 &webmin_debug_log('CMD', "cmd=$realcmd mode=$mode")
8138 if ($gconfig{'debug_what_cmd'});
8140 return open($fh, "| $cmd");
8142 elsif ($mode == 1) {
8143 return open($fh, "$cmd 2>$null_file |");
8145 elsif ($mode == 2) {
8146 return open($fh, "$cmd 2>&1 |");
8150 =head2 translate_filename(filename)
8152 Applies all relevant registered translation functions to a filename. Mostly
8153 for internal use, and typically does nothing.
8156 sub translate_filename
8158 my ($realfile) = @_;
8159 my @funcs = grep { $_->[0] eq &get_module_name() ||
8160 !defined($_->[0]) } @main::filename_callbacks;
8161 foreach my $f (@funcs) {
8163 $realfile = &$func($realfile, @{$f->[2]});
8168 =head2 translate_command(filename)
8170 Applies all relevant registered translation functions to a command. Mostly
8171 for internal use, and typically does nothing.
8174 sub translate_command
8177 my @funcs = grep { $_->[0] eq &get_module_name() ||
8178 !defined($_->[0]) } @main::command_callbacks;
8179 foreach my $f (@funcs) {
8181 $realcmd = &$func($realcmd, @{$f->[2]});
8186 =head2 register_filename_callback(module|undef, &function, &args)
8188 Registers some function to be called when the specified module (or all
8189 modules) tries to open a file for reading and writing. The function must
8190 return the actual file to open. This allows you to override which files
8191 other code actually operates on, via the translate_filename function.
8194 sub register_filename_callback
8196 my ($mod, $func, $args) = @_;
8197 push(@main::filename_callbacks, [ $mod, $func, $args ]);
8200 =head2 register_command_callback(module|undef, &function, &args)
8202 Registers some function to be called when the specified module (or all
8203 modules) tries to execute a command. The function must return the actual
8204 command to run. This allows you to override which commands other other code
8205 actually runs, via the translate_command function.
8208 sub register_command_callback
8210 my ($mod, $func, $args) = @_;
8211 push(@main::command_callbacks, [ $mod, $func, $args ]);
8214 =head2 capture_function_output(&function, arg, ...)
8216 Captures output that some function prints to STDOUT, and returns it. Useful
8217 for functions outside your control that print data when you really want to
8218 manipulate it before output.
8221 sub capture_function_output
8223 my ($func, @args) = @_;
8224 socketpair(SOCKET2, SOCKET1, AF_UNIX, SOCK_STREAM, PF_UNSPEC);
8225 my $old = select(SOCKET1);
8226 my @rv = &$func(@args);
8235 return wantarray ? ($out, \@rv) : $out;
8238 =head2 capture_function_output_tempfile(&function, arg, ...)
8240 Behaves the same as capture_function_output, but uses a temporary file
8241 to avoid buffer full problems.
8244 sub capture_function_output_tempfile
8246 my ($func, @args) = @_;
8247 my $temp = &transname();
8248 open(BUFFER, ">$temp");
8249 my $old = select(BUFFER);
8250 my @rv = &$func(@args);
8253 my $out = &read_file_contents($temp);
8254 &unlink_file($temp);
8255 return wantarray ? ($out, \@rv) : $out;
8258 =head2 modules_chooser_button(field, multiple, [form])
8260 Returns HTML for a button for selecting one or many Webmin modules.
8261 field - Name of the HTML field to place the module names into.
8262 multiple - Set to 1 if multiple modules can be selected.
8263 form - Index of the form on the page.
8266 sub modules_chooser_button
8268 return &theme_modules_chooser_button(@_)
8269 if (defined(&theme_modules_chooser_button));
8270 my $form = defined($_[2]) ? $_[2] : 0;
8271 my $w = $_[1] ? 700 : 500;
8273 if ($_[1] && $gconfig{'db_sizemodules'}) {
8274 ($w, $h) = split(/x/, $gconfig{'db_sizemodules'});
8276 elsif (!$_[1] && $gconfig{'db_sizemodule'}) {
8277 ($w, $h) = split(/x/, $gconfig{'db_sizemodule'});
8279 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";
8282 =head2 substitute_template(text, &hash)
8284 Given some text and a hash reference, for each ocurrance of $FOO or ${FOO} in
8285 the text replaces it with the value of the hash key foo. Also supports blocks
8286 like ${IF-FOO} ... ${ENDIF-FOO}, whose contents are only included if foo is
8287 non-zero, and ${IF-FOO} ... ${ELSE-FOO} ... ${ENDIF-FOO}.
8290 sub substitute_template
8292 # Add some extra fixed parameters to the hash
8293 my %hash = %{$_[1]};
8294 $hash{'hostname'} = &get_system_hostname();
8295 $hash{'webmin_config'} = $config_directory;
8296 $hash{'webmin_etc'} = $config_directory;
8297 $hash{'module_config'} = &get_module_variable('$module_config_directory');
8298 $hash{'webmin_var'} = $var_directory;
8300 # Add time-based parameters, for use in DNS
8301 $hash{'current_time'} = time();
8302 my @tm = localtime($hash{'current_time'});
8303 $hash{'current_year'} = $tm[5]+1900;
8304 $hash{'current_month'} = sprintf("%2.2d", $tm[4]+1);
8305 $hash{'current_day'} = sprintf("%2.2d", $tm[3]);
8306 $hash{'current_hour'} = sprintf("%2.2d", $tm[2]);
8307 $hash{'current_minute'} = sprintf("%2.2d", $tm[1]);
8308 $hash{'current_second'} = sprintf("%2.2d", $tm[0]);
8310 # Actually do the substition
8312 foreach my $s (keys %hash) {
8313 next if ($s eq ''); # Prevent just $ from being subbed
8316 $rv =~ s/\$\{\Q$us\E\}/$sv/g;
8317 $rv =~ s/\$\Q$us\E/$sv/g;
8319 # Replace ${IF}..${ELSE}..${ENDIF} block with first value,
8320 # and ${IF}..${ENDIF} with value
8321 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ELSE-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)/$2/g;
8322 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)/$2/g;
8324 # Replace $IF..$ELSE..$ENDIF block with first value,
8325 # and $IF..$ENDIF with value
8326 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ELSE-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)/$2/g;
8327 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)/$2/g;
8329 # Replace ${IFEQ}..${ENDIFEQ} block with first value if
8330 # matching, nothing if not
8331 $rv =~ s/\$\{IFEQ-\Q$us\E-\Q$sv\E\}(\n?)([\000-\377]*?)\$\{ENDIFEQ-\Q$us\E-\Q$sv\E\}(\n?)/$2/g;
8332 $rv =~ s/\$\{IFEQ-\Q$us\E-[^\}]+}(\n?)([\000-\377]*?)\$\{ENDIFEQ-\Q$us\E-[^\}]+\}(\n?)//g;
8334 # Replace $IFEQ..$ENDIFEQ block with first value if
8335 # matching, nothing if not
8336 $rv =~ s/\$IFEQ-\Q$us\E-\Q$sv\E(\n?)([\000-\377]*?)\$ENDIFEQ-\Q$us\E-\Q$sv\E(\n?)/$2/g;
8337 $rv =~ s/\$IFEQ-\Q$us\E-\S+(\n?)([\000-\377]*?)\$ENDIFEQ-\Q$us\E-\S+(\n?)//g;
8340 # Replace ${IF}..${ELSE}..${ENDIF} block with second value,
8341 # and ${IF}..${ENDIF} with nothing
8342 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ELSE-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)/$4/g;
8343 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)//g;
8345 # Replace $IF..$ELSE..$ENDIF block with second value,
8346 # and $IF..$ENDIF with nothing
8347 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ELSE-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)/$4/g;
8348 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)//g;
8350 # Replace ${IFEQ}..${ENDIFEQ} block with nothing
8351 $rv =~ s/\$\{IFEQ-\Q$us\E-[^\}]+}(\n?)([\000-\377]*?)\$\{ENDIFEQ-\Q$us\E-[^\}]+\}(\n?)//g;
8352 $rv =~ s/\$IFEQ-\Q$us\E-\S+(\n?)([\000-\377]*?)\$ENDIFEQ-\Q$us\E-\S+(\n?)//g;
8356 # Now assume any $IF blocks whose variables are not present in the hash
8357 # evaluate to false.
8358 # $IF...$ELSE x $ENDIF => x
8359 $rv =~ s/\$\{IF\-([A-Z]+)\}.*?\$\{ELSE\-\1\}(.*?)\$\{ENDIF\-\1\}/$2/gs;
8360 # $IF...x...$ENDIF => (nothing)
8361 $rv =~ s/\$\{IF\-([A-Z]+)\}.*?\$\{ENDIF\-\1\}//gs;
8362 # ${var} => (nothing)
8363 $rv =~ s/\$\{[A-Z]+\}//g;
8368 =head2 running_in_zone
8370 Returns 1 if the current Webmin instance is running in a Solaris zone. Used to
8371 disable module and features that are not appropriate, like those that modify
8372 mounted filesystems.
8377 return 0 if ($gconfig{'os_type'} ne 'solaris' ||
8378 $gconfig{'os_version'} < 10);
8379 my $zn = `zonename 2>$null_file`;
8381 return $zn && $zn ne "global";
8384 =head2 running_in_vserver
8386 Returns 1 if the current Webmin instance is running in a Linux VServer.
8387 Used to disable modules and features that are not appropriate.
8390 sub running_in_vserver
8392 return 0 if ($gconfig{'os_type'} !~ /^\*-linux$/);
8395 open(MTAB, "/etc/mtab");
8397 my ($dev, $mp) = split(/\s+/, $_);
8398 if ($mp eq "/" && $dev =~ /^\/dev\/hdv/) {
8407 =head2 running_in_xen
8409 Returns 1 if Webmin is running inside a Xen instance, by looking
8410 at /proc/xen/capabilities.
8415 return 0 if (!-r "/proc/xen/capabilities");
8416 my $cap = &read_file_contents("/proc/xen/capabilities");
8417 return $cap =~ /control_d/ ? 0 : 1;
8420 =head2 running_in_openvz
8422 Returns 1 if Webmin is running inside an OpenVZ container, by looking
8423 at /proc/vz/veinfo for a non-zero line.
8426 sub running_in_openvz
8428 return 0 if (!-r "/proc/vz/veinfo");
8429 my $lref = &read_file_lines("/proc/vz/veinfo", 1);
8430 return 0 if (!$lref || !@$lref);
8431 foreach my $l (@$lref) {
8433 my @ll = split(/\s+/, $l);
8434 return 0 if ($ll[0] eq '0');
8439 =head2 list_categories(&modules, [include-empty])
8441 Returns a hash mapping category codes to names, including any custom-defined
8442 categories. The modules parameter must be an array ref of module hash objects,
8443 as returned by get_all_module_infos.
8448 my ($mods, $empty) = @_;
8449 my (%cats, %catnames);
8450 &read_file("$config_directory/webmin.catnames", \%catnames);
8451 foreach my $o (@lang_order_list) {
8452 &read_file("$config_directory/webmin.catnames.$o", \%catnames);
8457 foreach my $m (@$mods) {
8458 my $c = $m->{'category'};
8459 next if ($cats{$c});
8460 if (defined($catnames{$c})) {
8461 $cats{$c} = $catnames{$c};
8463 elsif ($text{"category_$c"}) {
8464 $cats{$c} = $text{"category_$c"};
8467 # try to get category name from module ..
8468 my %mtext = &load_language($m->{'dir'});
8469 if ($mtext{"category_$c"}) {
8470 $cats{$c} = $mtext{"category_$c"};
8473 $c = $m->{'category'} = "";
8474 $cats{$c} = $text{"category_$c"};
8481 =head2 is_readonly_mode
8483 Returns 1 if the current user is in read-only mode, and thus all writes
8484 to files and command execution should fail.
8487 sub is_readonly_mode
8489 if (!defined($main::readonly_mode_cache)) {
8490 my %gaccess = &get_module_acl(undef, "");
8491 $main::readonly_mode_cache = $gaccess{'readonly'} ? 1 : 0;
8493 return $main::readonly_mode_cache;
8496 =head2 command_as_user(user, with-env?, command, ...)
8498 Returns a command to execute some command as the given user, using the
8499 su statement. If on Linux, the /bin/sh shell is forced in case the user
8500 does not have a valid shell. If with-env is set to 1, the -s flag is added
8501 to the su command to read the user's .profile or .bashrc file.
8506 my ($user, $env, @args) = @_;
8507 my @uinfo = getpwnam($user);
8508 if ($uinfo[8] ne "/bin/sh" && $uinfo[8] !~ /\/bash$/) {
8509 # User shell doesn't appear to be valid
8510 if ($gconfig{'os_type'} =~ /-linux$/) {
8511 # Use -s /bin/sh to force it
8512 $shellarg = " -s /bin/sh";
8514 elsif ($gconfig{'os_type'} eq 'freebsd' ||
8515 $gconfig{'os_type'} eq 'solaris' &&
8516 $gconfig{'os_version'} >= 11 ||
8517 $gconfig{'os_type'} eq 'macos') {
8518 # Use -m and force /bin/sh
8519 @args = ( "/bin/sh", "-c", quotemeta(join(" ", @args)) );
8523 my $rv = "su".($env ? " -" : "").$shellarg.
8524 " ".quotemeta($user)." -c ".quotemeta(join(" ", @args));
8528 =head2 list_osdn_mirrors(project, file)
8530 This function is now deprecated in favor of letting sourceforge just
8531 redirect to the best mirror, and now just returns their primary download URL.
8534 sub list_osdn_mirrors
8536 my ($project, $file) = @_;
8537 return ( { 'url' => "http://downloads.sourceforge.net/$project/$file",
8539 'mirror' => 'downloads' } );
8542 =head2 convert_osdn_url(url)
8544 Given a URL like http://osdn.dl.sourceforge.net/sourceforge/project/file.zip
8545 or http://prdownloads.sourceforge.net/project/file.zip , convert it
8546 to a real URL on the sourceforge download redirector.
8549 sub convert_osdn_url
8552 if ($url =~ /^http:\/\/[^\.]+.dl.sourceforge.net\/sourceforge\/([^\/]+)\/(.*)$/ ||
8553 $url =~ /^http:\/\/prdownloads.sourceforge.net\/([^\/]+)\/(.*)$/) {
8554 # Always use the Sourceforge mail download URL, which does
8555 # a location-based redirect for us
8556 my ($project, $file) = ($1, $2);
8557 $url = "http://prdownloads.sourceforge.net/sourceforge/".
8559 return wantarray ? ( $url, 0 ) : $url;
8562 # Some other source .. don't change
8563 return wantarray ? ( $url, 2 ) : $url;
8567 =head2 get_current_dir
8569 Returns the directory the current process is running in.
8575 if ($gconfig{'os_type'} eq 'windows') {
8588 =head2 supports_users
8590 Returns 1 if the current OS supports Unix user concepts and functions like
8591 su , getpw* and so on. This will be true on Linux and other Unixes, but false
8597 return $gconfig{'os_type'} ne 'windows';
8600 =head2 supports_symlinks
8602 Returns 1 if the current OS supports symbolic and hard links. This will not
8603 be the case on Windows.
8606 sub supports_symlinks
8608 return $gconfig{'os_type'} ne 'windows';
8611 =head2 quote_path(path)
8613 Returns a path with safe quoting for the current operating system.
8619 if ($gconfig{'os_type'} eq 'windows' || $path =~ /^[a-z]:/i) {
8620 # Windows only supports "" style quoting
8624 return quotemeta($path);
8628 =head2 get_windows_root
8630 Returns the base windows system directory, like c:/windows.
8633 sub get_windows_root
8635 if ($ENV{'SystemRoot'}) {
8636 my $rv = $ENV{'SystemRoot'};
8641 return -d "c:/windows" ? "c:/windows" : "c:/winnt";
8645 =head2 read_file_contents(file)
8647 Given a filename, returns its complete contents as a string. Effectively
8648 the same as the Perl construct `cat file`.
8651 sub read_file_contents
8653 &open_readfile(FILE, $_[0]) || return undef;
8660 =head2 unix_crypt(password, salt)
8662 Performs Unix encryption on a password, using the built-in crypt function or
8663 the Crypt::UnixCrypt module if the former does not work. The salt parameter
8664 must be either an already-hashed password, or a two-character alpha-numeric
8670 my ($pass, $salt) = @_;
8671 return "" if ($salt !~ /^[a-zA-Z0-9\.\/]{2}/); # same as real crypt
8672 my $rv = eval "crypt(\$pass, \$salt)";
8674 return $rv if ($rv && !$@);
8675 eval "use Crypt::UnixCrypt";
8677 return Crypt::UnixCrypt::crypt($pass, $salt);
8680 &error("Failed to encrypt password : $err");
8684 =head2 split_quoted_string(string)
8686 Given a string like I<foo "bar baz" quux>, returns the array :
8690 sub split_quoted_string
8694 while($str =~ /^"([^"]*)"\s*([\000-\377]*)$/ ||
8695 $str =~ /^'([^']*)'\s*([\000-\377]*)$/ ||
8696 $str =~ /^(\S+)\s*([\000-\377]*)$/) {
8703 =head2 write_to_http_cache(url, file|&data)
8705 Updates the Webmin cache with the contents of the given file, possibly also
8706 clearing out old data. Mainly for internal use by http_download.
8709 sub write_to_http_cache
8711 my ($url, $file) = @_;
8712 return 0 if (!$gconfig{'cache_size'});
8714 # Don't cache downloads that look dynamic
8715 if ($url =~ /cgi-bin/ || $url =~ /\?/) {
8719 # Check if the current module should do caching
8720 if ($gconfig{'cache_mods'} =~ /^\!(.*)$/) {
8721 # Caching all except some modules
8722 my @mods = split(/\s+/, $1);
8723 return 0 if (&indexof(&get_module_name(), @mods) != -1);
8725 elsif ($gconfig{'cache_mods'}) {
8726 # Only caching some modules
8727 my @mods = split(/\s+/, $gconfig{'cache_mods'});
8728 return 0 if (&indexof(&get_module_name(), @mods) == -1);
8734 $size = length($$file);
8737 my @st = stat($file);
8741 if ($size > $gconfig{'cache_size'}) {
8742 # Bigger than the whole cache - so don't save it
8747 $cfile = "$main::http_cache_directory/$cfile";
8749 # See how much we have cached currently, clearing old files
8751 mkdir($main::http_cache_directory, 0700) if (!-d $main::http_cache_directory);
8752 opendir(CACHEDIR, $main::http_cache_directory);
8753 foreach my $f (readdir(CACHEDIR)) {
8754 next if ($f eq "." || $f eq "..");
8755 my $path = "$main::http_cache_directory/$f";
8756 my @st = stat($path);
8757 if ($gconfig{'cache_days'} &&
8758 time()-$st[9] > $gconfig{'cache_days'}*24*60*60) {
8759 # This file is too old .. trash it
8764 push(@cached, [ $path, $st[7], $st[9] ]);
8768 @cached = sort { $a->[2] <=> $b->[2] } @cached;
8769 while($total+$size > $gconfig{'cache_size'} && @cached) {
8770 # Cache is too big .. delete some files until the new one will fit
8771 unlink($cached[0]->[0]);
8772 $total -= $cached[0]->[1];
8776 # Finally, write out the new file
8778 &open_tempfile(CACHEFILE, ">$cfile");
8779 &print_tempfile(CACHEFILE, $$file);
8780 &close_tempfile(CACHEFILE);
8783 my ($ok, $err) = ©_source_dest($file, $cfile);
8789 =head2 check_in_http_cache(url)
8791 If some URL is in the cache and valid, return the filename for it. Mainly
8792 for internal use by http_download.
8795 sub check_in_http_cache
8798 return undef if (!$gconfig{'cache_size'});
8800 # Check if the current module should do caching
8801 if ($gconfig{'cache_mods'} =~ /^\!(.*)$/) {
8802 # Caching all except some modules
8803 my @mods = split(/\s+/, $1);
8804 return 0 if (&indexof(&get_module_name(), @mods) != -1);
8806 elsif ($gconfig{'cache_mods'}) {
8807 # Only caching some modules
8808 my @mods = split(/\s+/, $gconfig{'cache_mods'});
8809 return 0 if (&indexof(&get_module_name(), @mods) == -1);
8814 $cfile = "$main::http_cache_directory/$cfile";
8815 my @st = stat($cfile);
8816 return undef if (!@st || !$st[7]);
8817 if ($gconfig{'cache_days'} && time()-$st[9] > $gconfig{'cache_days'}*24*60*60) {
8822 open(TOUCH, ">>$cfile"); # Update the file time, to keep it in the cache
8827 =head2 supports_javascript
8829 Returns 1 if the current browser is assumed to support javascript.
8832 sub supports_javascript
8834 if (defined(&theme_supports_javascript)) {
8835 return &theme_supports_javascript();
8837 return $ENV{'MOBILE_DEVICE'} ? 0 : 1;
8840 =head2 get_module_name
8842 Returns the name of the Webmin module that called this function. For internal
8843 use only by other API functions.
8848 return &get_module_variable('$module_name');
8851 =head2 get_module_variable(name, [ref])
8853 Returns the value of some variable which is set in the caller's context, if
8854 using the new WebminCore package. For internal use only.
8857 sub get_module_variable
8859 my ($v, $wantref) = @_;
8860 my $slash = $wantref ? "\\" : "";
8861 my $thispkg = &web_libs_package();
8862 if ($thispkg eq 'WebminCore') {
8863 my ($vt, $vn) = split('', $v, 2);
8865 for(my $i=0; ($callpkg) = caller($i); $i++) {
8866 last if ($callpkg ne $thispkg);
8868 return eval "${slash}${vt}${callpkg}::${vn}";
8870 return eval "${slash}${v}";
8873 =head2 clear_time_locale()
8875 Temporarily force the locale to C, until reset_time_locale is called. This is
8876 useful if your code is going to call C<strftime> from the POSIX package, and
8877 you want to ensure that the output is in a consistent format.
8880 sub clear_time_locale
8882 if ($main::clear_time_locale_count == 0) {
8885 $main::clear_time_locale_old = POSIX::setlocale(POSIX::LC_TIME);
8886 POSIX::setlocale(POSIX::LC_TIME, "C");
8889 $main::clear_time_locale_count++;
8892 =head2 reset_time_locale()
8894 Revert the locale to whatever it was before clear_time_locale was called
8897 sub reset_time_locale
8899 if ($main::clear_time_locale_count == 1) {
8901 POSIX::setlocale(POSIX::LC_TIME, $main::clear_time_locale_old);
8902 $main::clear_time_locale_old = undef;
8905 $main::clear_time_locale_count--;
8908 =head2 callers_package(filehandle)
8910 Convert a non-module filehandle like FOO to one qualified with the
8911 caller's caller's package, like fsdump::FOO. For internal use only.
8917 my $callpkg = (caller(1))[0];
8918 my $thispkg = &web_libs_package();
8919 if (!ref($fh) && $fh !~ /::/ &&
8920 $callpkg ne $thispkg && $thispkg eq 'WebminCore') {
8921 $fh = $callpkg."::".$fh;
8926 =head2 web_libs_package()
8928 Returns the package this code is in. We can't always trust __PACKAGE__. For
8932 sub web_libs_package
8934 if ($called_from_webmin_core) {
8935 return "WebminCore";
8940 =head2 get_userdb_string
8942 Returns the URL-style string for connecting to the users and groups database
8945 sub get_userdb_string
8948 &get_miniserv_config(\%miniserv);
8949 return $miniserv{'userdb'};
8952 =head2 connect_userdb(string)
8954 Returns a handle for talking to a user database - may be a DBI or LDAP handle.
8955 On failure returns an error message string. In an array context, returns the
8962 my ($proto, $user, $pass, $host, $prefix, $args) = &split_userdb_string($str);
8963 if ($proto eq "mysql") {
8964 # Connect to MySQL with DBI
8965 my $drh = eval "use DBI; DBI->install_driver('mysql');";
8966 $drh || return $text{'sql_emysqldriver'};
8967 my ($host, $port) = split(/:/, $host);
8968 my $cstr = "database=$prefix;host=$host";
8969 $cstr .= ";port=$port" if ($port);
8970 my $dbh = $drh->connect($cstr, $user, $pass, { });
8971 $dbh || return &text('sql_emysqlconnect', $drh->errstr);
8972 return wantarray ? ($dbh, $proto) : $dbh;
8974 elsif ($proto eq "postgresql") {
8975 # Connect to PostgreSQL with DBI
8976 my $drh = eval "use DBI; DBI->install_driver('Pg');";
8977 $drh || return $text{'sql_epostgresqldriver'};
8978 my ($host, $port) = split(/:/, $host);
8979 my $cstr = "dbname=$prefix;host=$host";
8980 $cstr .= ";port=$port" if ($port);
8981 my $dbh = $drh->connect($cstr, $user, $pass);
8982 $dbh || return &text('sql_epostgresqlconnect', $drh->errstr);
8983 return wantarray ? ($dbh, $proto) : $dbh;
8985 elsif ($proto eq "ldap") {
8987 return "LDAP not done yet";
8990 return "Unknown protocol $proto";
8994 =head2 disconnect_userdb(string, &handle)
8996 Closes a handle opened by connect_userdb
8999 sub disconnect_userdb
9002 if ($str =~ /^(mysql|postgresql):/) {
9006 elsif ($str =~ /^ldap:/) {
9012 =head2 split_userdb_string(string)
9014 Converts a string like mysql://user:pass@host/db into separate parts
9017 sub split_userdb_string
9020 if ($str =~ /^([a-z]+):\/\/([^:]*):([^\@]*)\@([a-z0-9\.\-\_]+)\/([^\?]+)(\?(.*))?$/) {
9021 my ($proto, $user, $pass, $host, $prefix, $argstr) =
9022 ($1, $2, $3, $4, $5, $7);
9023 my %args = map { split(/=/, $_, 2) } split(/\&/, $argstr);
9024 return ($proto, $user, $pass, $host, $prefix, \%args);
9029 $done_web_lib_funcs = 1;