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], [no-default])
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);
3384 &read_file_cached("$mdir/defaultacl", \%rv);
3387 my $userdb = &get_userdb_string();
3390 # Look for this group in the user/group DB
3391 my ($dbh, $proto) = &connect_userdb($userdb);
3392 ref($dbh) || &error(&text('egroupdbacl', $dbh));
3393 if ($proto eq "mysql" || $proto eq "postgresql") {
3394 # Find the group in the SQL DB
3395 my $cmd = $dbh->prepare(
3396 "select id from webmin_group where name = ?");
3397 $cmd && $cmd->execute($g) ||
3398 &error(&text('egroupdbacl', $dbh->errstr));
3399 my ($id) = $cmd->fetchrow();
3400 $foundindb = 1 if (defined($id));
3403 # Fetch ACLs with SQL
3405 my $cmd = $dbh->prepare(
3406 "select attr,value from webmin_group_acl ".
3407 "where id = ? and module = ?");
3408 $cmd && $cmd->execute($id, $m) ||
3409 &error(&text('egroupdbacl', $dbh->errstr));
3410 while(my ($a, $v) = $cmd->fetchrow()) {
3416 elsif ($proto eq "ldap") {
3417 # Fetch ACLs from LDAP
3420 &disconnect_userdb($userdb, $dbh);
3423 # Read from local files
3424 &read_file_cached("$config_directory/$m/$g.gacl", \%rv);
3426 if (defined(&theme_get_module_acl)) {
3427 %rv = &theme_get_module_acl($g, $m, \%rv);
3432 =head2 save_module_acl(&acl, [user], [module], [never-update-group])
3434 Updates the acl hash for some user and module. The parameters are :
3436 =item acl - Hash reference for the new access control options, or undef to clear
3438 =item user - User to update, defaulting to the current user.
3440 =item module - Module to update, defaulting to the caller.
3442 =item never-update-group - Never update the user's group's ACL
3447 my $u = defined($_[1]) ? $_[1] : $base_remote_user;
3448 my $m = defined($_[2]) ? $_[2] : &get_module_name();
3449 if (!$_[3] && &foreign_check("acl")) {
3450 # Check if this user is a member of a group, and if he gets the
3451 # module from a group. If so, update its ACL as well
3452 &foreign_require("acl", "acl-lib.pl");
3454 foreach my $g (&acl::list_groups()) {
3455 if (&indexof($u, @{$g->{'members'}}) >= 0 &&
3456 &indexof($m, @{$g->{'modules'}}) >= 0) {
3462 &save_group_module_acl($_[0], $group->{'name'}, $m);
3466 my $userdb = &get_userdb_string();
3469 # Look for this user in the user/group DB
3470 my ($dbh, $proto) = &connect_userdb($userdb);
3471 ref($dbh) || &error(&text('euserdbacl', $dbh));
3472 if ($proto eq "mysql" || $proto eq "postgresql") {
3473 # Find the user in the SQL DB
3474 my $cmd = $dbh->prepare(
3475 "select id from webmin_user where name = ?");
3476 $cmd && $cmd->execute($u) ||
3477 &error(&text('euserdbacl2', $dbh->errstr));
3478 my ($id) = $cmd->fetchrow();
3479 $foundindb = 1 if (defined($id));
3482 # Replace ACLs for user
3484 my $cmd = $dbh->prepare("delete from webmin_user_acl ".
3485 "where id = ? and module = ?");
3486 $cmd && $cmd->execute($id, $m) ||
3487 &error(&text('euserdbacl', $dbh->errstr));
3490 my $cmd = $dbh->prepare(
3491 "insert into webmin_user_acl ".
3492 "(id,module,attr,value) values (?,?,?,?)");
3493 $cmd || &error(&text('euserdbacl2',
3495 foreach my $a (keys %{$_[0]}) {
3496 $cmd->execute($id,$m,$a,$_[0]->{$a}) ||
3497 &error(&text('euserdbacl2',
3504 elsif ($proto eq "ldap") {
3505 # Update ACLs in LDAP
3508 &disconnect_userdb($userdb, $dbh);
3512 # Save ACL to local file
3513 if (!-d "$config_directory/$m") {
3514 mkdir("$config_directory/$m", 0755);
3517 &write_file("$config_directory/$m/$u.acl", $_[0]);
3520 &unlink_file("$config_directory/$m/$u.acl");
3525 =head2 save_group_module_acl(&acl, group, [module], [never-update-group])
3527 Updates the acl hash for some group and module. The parameters are :
3529 =item acl - Hash reference for the new access control options.
3531 =item group - Group name to update.
3533 =item module - Module to update, defaulting to the caller.
3535 =item never-update-group - Never update the parent group's ACL
3538 sub save_group_module_acl
3541 my $m = defined($_[2]) ? $_[2] : &get_module_name();
3542 if (!$_[3] && &foreign_check("acl")) {
3543 # Check if this group is a member of a group, and if it gets the
3544 # module from a group. If so, update the parent ACL as well
3545 &foreign_require("acl", "acl-lib.pl");
3547 foreach my $pg (&acl::list_groups()) {
3548 if (&indexof('@'.$g, @{$pg->{'members'}}) >= 0 &&
3549 &indexof($m, @{$pg->{'modules'}}) >= 0) {
3555 &save_group_module_acl($_[0], $group->{'name'}, $m);
3559 my $userdb = &get_userdb_string();
3562 # Look for this group in the user/group DB
3563 my ($dbh, $proto) = &connect_userdb($userdb);
3564 ref($dbh) || &error(&text('egroupdbacl', $dbh));
3565 if ($proto eq "mysql" || $proto eq "postgresql") {
3566 # Find the group in the SQL DB
3567 my $cmd = $dbh->prepare(
3568 "select id from webmin_group where name = ?");
3569 $cmd && $cmd->execute($g) ||
3570 &error(&text('egroupdbacl2', $dbh->errstr));
3571 my ($id) = $cmd->fetchrow();
3572 $foundindb = 1 if (defined($id));
3575 # Replace ACLs for group
3577 my $cmd = $dbh->prepare("delete from webmin_group_acl ".
3578 "where id = ? and module = ?");
3579 $cmd && $cmd->execute($id, $m) ||
3580 &error(&text('egroupdbacl', $dbh->errstr));
3583 my $cmd = $dbh->prepare(
3584 "insert into webmin_group_acl ".
3585 "(id,module,attr,value) values (?,?,?,?)");
3586 $cmd || &error(&text('egroupdbacl2',
3588 foreach my $a (keys %{$_[0]}) {
3589 $cmd->execute($id,$m,$a,$_[0]->{$a}) ||
3590 &error(&text('egroupdbacl2',
3597 elsif ($proto eq "ldap") {
3598 # Update ACLs in LDAP
3601 &disconnect_userdb($userdb, $dbh);
3605 # Save ACL to local file
3606 if (!-d "$config_directory/$m") {
3607 mkdir("$config_directory/$m", 0755);
3610 &write_file("$config_directory/$m/$g.gacl", $_[0]);
3613 &unlink_file("$config_directory/$m/$g.gacl");
3620 This function must be called by all Webmin CGI scripts, either directly or
3621 indirectly via a per-module lib.pl file. It performs a number of initialization
3622 and housekeeping tasks, such as working out the module name, checking that the
3623 current user has access to the module, and populating global variables. Some
3624 of the variables set include :
3626 =item $config_directory - Base Webmin config directory, typically /etc/webmin
3628 =item $var_directory - Base logs directory, typically /var/webmin
3630 =item %config - Per-module configuration.
3632 =item %gconfig - Global configuration.
3634 =item $scriptname - Base name of the current perl script.
3636 =item $module_name - The name of the current module.
3638 =item $module_config_directory - The config directory for this module.
3640 =item $module_config_file - The config file for this module.
3642 =item $module_root_directory - This module's code directory.
3644 =item $webmin_logfile - The detailed logfile for webmin.
3646 =item $remote_user - The actual username used to login to webmin.
3648 =item $base_remote_user - The username whose permissions are in effect.
3650 =item $current_theme - The theme currently in use.
3652 =item $root_directory - The first root directory of this webmin install.
3654 =item @root_directories - All root directories for this webmin install.
3659 # Record first process ID that called this, so we know when it exited to clean
3661 $main::initial_process_id ||= $$;
3663 # Configuration and spool directories
3664 if (!defined($ENV{'WEBMIN_CONFIG'})) {
3665 die "WEBMIN_CONFIG not set";
3667 $config_directory = $ENV{'WEBMIN_CONFIG'};
3668 if (!defined($ENV{'WEBMIN_VAR'})) {
3669 open(VARPATH, "$config_directory/var-path");
3670 chop($var_directory = <VARPATH>);
3674 $var_directory = $ENV{'WEBMIN_VAR'};
3676 $main::http_cache_directory = $ENV{'WEBMIN_VAR'}."/cache";
3677 $main::default_debug_log_file = $ENV{'WEBMIN_VAR'}."/webmin.debug";
3679 if ($ENV{'SESSION_ID'}) {
3680 # Hide this variable from called programs, but keep it for internal use
3681 $main::session_id = $ENV{'SESSION_ID'};
3682 delete($ENV{'SESSION_ID'});
3684 if ($ENV{'REMOTE_PASS'}) {
3685 # Hide the password too
3686 $main::remote_pass = $ENV{'REMOTE_PASS'};
3687 delete($ENV{'REMOTE_PASS'});
3690 if ($> == 0 && $< != 0 && !$ENV{'FOREIGN_MODULE_NAME'}) {
3691 # Looks like we are running setuid, but the real UID hasn't been set.
3692 # Do so now, so that executed programs don't get confused
3697 # Read the webmin global config file. This contains the OS type and version,
3698 # OS specific configuration and global options such as proxy servers
3699 $config_file = "$config_directory/config";
3701 &read_file_cached($config_file, \%gconfig);
3702 $null_file = $gconfig{'os_type'} eq 'windows' ? "NUL" : "/dev/null";
3703 $path_separator = $gconfig{'os_type'} eq 'windows' ? ';' : ':';
3705 # If debugging is enabled, open the debug log
3706 if ($gconfig{'debug_enabled'} && !$main::opened_debug_log++) {
3707 my $dlog = $gconfig{'debug_file'} || $main::default_debug_log_file;
3708 if ($gconfig{'debug_size'}) {
3709 my @st = stat($dlog);
3710 if ($st[7] > $gconfig{'debug_size'}) {
3711 rename($dlog, $dlog.".0");
3714 open(main::DEBUGLOG, ">>$dlog");
3715 $main::opened_debug_log = 1;
3717 if ($gconfig{'debug_what_start'}) {
3718 my $script_name = $0 =~ /([^\/]+)$/ ? $1 : '-';
3719 $main::debug_log_start_time = time();
3720 &webmin_debug_log("START", "script=$script_name");
3721 $main::debug_log_start_module = $module_name;
3725 # Set PATH and LD_LIBRARY_PATH
3726 if ($gconfig{'path'}) {
3727 if ($gconfig{'syspath'}) {
3729 $ENV{'PATH'} = $gconfig{'path'};
3733 $ENV{'PATH'} = $gconfig{'path'}.$path_separator.$ENV{'PATH'};
3736 $ENV{$gconfig{'ld_env'}} = $gconfig{'ld_path'} if ($gconfig{'ld_env'});
3738 # Set http_proxy and ftp_proxy environment variables, based on Webmin settings
3739 if ($gconfig{'http_proxy'}) {
3740 $ENV{'http_proxy'} = $gconfig{'http_proxy'};
3742 if ($gconfig{'ftp_proxy'}) {
3743 $ENV{'ftp_proxy'} = $gconfig{'ftp_proxy'};
3745 if ($gconfig{'noproxy'}) {
3746 $ENV{'no_proxy'} = $gconfig{'noproxy'};
3749 # Find all root directories
3751 if (&get_miniserv_config(\%miniserv)) {
3752 @root_directories = ( $miniserv{'root'} );
3753 for($i=0; defined($miniserv{"extraroot_$i"}); $i++) {
3754 push(@root_directories, $miniserv{"extraroot_$i"});
3758 # Work out which module we are in, and read the per-module config file
3759 $0 =~ s/\\/\//g; # Force consistent path on Windows
3760 if (defined($ENV{'FOREIGN_MODULE_NAME'})) {
3761 # In a foreign call - use the module name given
3762 $root_directory = $ENV{'FOREIGN_ROOT_DIRECTORY'};
3763 $module_name = $ENV{'FOREIGN_MODULE_NAME'};
3764 @root_directories = ( $root_directory ) if (!@root_directories);
3766 elsif ($ENV{'SCRIPT_NAME'}) {
3767 my $sn = $ENV{'SCRIPT_NAME'};
3768 $sn =~ s/^$gconfig{'webprefix'}//
3769 if (!$gconfig{'webprefixnoredir'});
3770 if ($sn =~ /^\/([^\/]+)\//) {
3771 # Get module name from CGI path
3774 if ($ENV{'SERVER_ROOT'}) {
3775 $root_directory = $ENV{'SERVER_ROOT'};
3777 elsif ($ENV{'SCRIPT_FILENAME'}) {
3778 $root_directory = $ENV{'SCRIPT_FILENAME'};
3779 $root_directory =~ s/$sn$//;
3781 @root_directories = ( $root_directory ) if (!@root_directories);
3784 # Get root directory from miniserv.conf, and deduce module name from $0
3785 $root_directory = $root_directories[0];
3787 foreach my $r (@root_directories) {
3788 if ($0 =~ /^$r\/([^\/]+)\/[^\/]+$/i) {
3789 # Under a module directory
3794 elsif ($0 =~ /^$root_directory\/[^\/]+$/i) {
3800 &error("Script was not run with full path (failed to find $0 under $root_directory)") if (!$rok);
3803 # Work out of this is a web, command line or cron job
3804 if (!$main::webmin_script_type) {
3805 if ($ENV{'SCRIPT_NAME'}) {
3807 $main::webmin_script_type = 'web';
3810 # Cron jobs have no TTY
3811 if ($gconfig{'os_type'} eq 'windows' ||
3812 open(DEVTTY, ">/dev/tty")) {
3813 $main::webmin_script_type = 'cmd';
3817 $main::webmin_script_type = 'cron';
3822 # Set the umask based on config
3823 if ($gconfig{'umask'} && !$main::umask_already++) {
3824 umask(oct($gconfig{'umask'}));
3827 # If this is a cron job or other background task, set the nice level
3828 if (!$main::nice_already && $main::webmin_script_type eq 'cron') {
3830 if ($gconfig{'nice'}) {
3831 eval 'POSIX::nice($gconfig{\'nice\'});';
3834 # Set IO scheduling class and priority
3835 if ($gconfig{'sclass'} ne '' || $gconfig{'sprio'} ne '') {
3837 $cmd .= " -c ".quotemeta($gconfig{'sclass'})
3838 if ($gconfig{'sclass'} ne '');
3839 $cmd .= " -n ".quotemeta($gconfig{'sprio'})
3840 if ($gconfig{'sprio'} ne '');
3842 &execute_command("$cmd >/dev/null 2>&1");
3845 $main::nice_already++;
3848 my $u = $ENV{'BASE_REMOTE_USER'} || $ENV{'REMOTE_USER'};
3849 $base_remote_user = $u;
3850 $remote_user = $ENV{'REMOTE_USER'};
3853 # Find and load the configuration file for this module
3854 my (@ruinfo, $rgroup);
3855 $module_config_directory = "$config_directory/$module_name";
3856 if (&get_product_name() eq "usermin" &&
3857 -r "$module_config_directory/config.$remote_user") {
3859 $module_config_file = "$module_config_directory/config.$remote_user";
3861 elsif (&get_product_name() eq "usermin" &&
3862 (@ruinfo = getpwnam($remote_user)) &&
3863 ($rgroup = getgrgid($ruinfo[3])) &&
3864 -r "$module_config_directory/config.\@$rgroup") {
3865 # Based on group name
3866 $module_config_file = "$module_config_directory/config.\@$rgroup";
3870 $module_config_file = "$module_config_directory/config";
3873 &read_file_cached($module_config_file, \%config);
3875 # Fix up windows-specific substitutions in values
3876 foreach my $k (keys %config) {
3877 if ($config{$k} =~ /\$\{systemroot\}/) {
3878 my $root = &get_windows_root();
3879 $config{$k} =~ s/\$\{systemroot\}/$root/g;
3884 # Record the initial module
3885 $main::initial_module_name ||= $module_name;
3887 # Set some useful variables
3889 $current_themes = $ENV{'MOBILE_DEVICE'} && defined($gconfig{'mobile_theme'}) ?
3890 $gconfig{'mobile_theme'} :
3891 defined($gconfig{'theme_'.$remote_user}) ?
3892 $gconfig{'theme_'.$remote_user} :
3893 defined($gconfig{'theme_'.$base_remote_user}) ?
3894 $gconfig{'theme_'.$base_remote_user} :
3896 @current_themes = split(/\s+/, $current_themes);
3897 $current_theme = $current_themes[0];
3898 @theme_root_directories = map { "$root_directory/$_" } @current_themes;
3899 $theme_root_directory = $theme_root_directories[0];
3900 @theme_configs = ( );
3901 foreach my $troot (@theme_root_directories) {
3903 &read_file_cached("$troot/config", \%onetconfig);
3904 &read_file_cached("$troot/config", \%tconfig);
3905 push(@theme_configs, \%onetconfig);
3907 $tb = defined($tconfig{'cs_header'}) ? "bgcolor=#$tconfig{'cs_header'}" :
3908 defined($gconfig{'cs_header'}) ? "bgcolor=#$gconfig{'cs_header'}" :
3910 $cb = defined($tconfig{'cs_table'}) ? "bgcolor=#$tconfig{'cs_table'}" :
3911 defined($gconfig{'cs_table'}) ? "bgcolor=#$gconfig{'cs_table'}" :
3913 $tb .= ' '.$tconfig{'tb'} if ($tconfig{'tb'});
3914 $cb .= ' '.$tconfig{'cb'} if ($tconfig{'cb'});
3915 if ($tconfig{'preload_functions'}) {
3916 # Force load of theme functions right now, if requested
3917 &load_theme_library();
3919 if ($tconfig{'oofunctions'} && !$main::loaded_theme_oo_library++) {
3920 # Load the theme's Webmin:: package classes
3921 do "$theme_root_directory/$tconfig{'oofunctions'}";
3926 $webmin_logfile = $gconfig{'webmin_log'} ? $gconfig{'webmin_log'}
3927 : "$var_directory/webmin.log";
3929 # Load language strings into %text
3930 my @langs = &list_languages();
3932 if ($gconfig{'acceptlang'}) {
3933 foreach my $a (split(/,/, $ENV{'HTTP_ACCEPT_LANGUAGE'})) {
3934 my ($al) = grep { $_->{'lang'} eq $a } @langs;
3936 $accepted_lang = $al->{'lang'};
3941 $current_lang = $force_lang ? $force_lang :
3942 $accepted_lang ? $accepted_lang :
3943 $gconfig{"lang_$remote_user"} ? $gconfig{"lang_$remote_user"} :
3944 $gconfig{"lang_$base_remote_user"} ? $gconfig{"lang_$base_remote_user"} :
3945 $gconfig{"lang"} ? $gconfig{"lang"} : $default_lang;
3946 foreach my $l (@langs) {
3947 $current_lang_info = $l if ($l->{'lang'} eq $current_lang);
3949 @lang_order_list = &unique($default_lang,
3950 split(/:/, $current_lang_info->{'fallback'}),
3952 %text = &load_language($module_name);
3953 %text || &error("Failed to determine Webmin root from SERVER_ROOT, SCRIPT_FILENAME or the full command line");
3955 # Get the %module_info for this module
3957 my ($mi) = grep { $_->{'dir'} eq $module_name }
3958 &get_all_module_infos(2);
3959 %module_info = %$mi;
3960 $module_root_directory = &module_root_directory($module_name);
3963 if ($module_name && !$main::no_acl_check &&
3964 !defined($ENV{'FOREIGN_MODULE_NAME'})) {
3965 # Check if the HTTP user can access this module
3966 if (!&foreign_available($module_name)) {
3967 if (!&foreign_check($module_name)) {
3968 &error(&text('emodulecheck',
3969 "<i>$module_info{'desc'}</i>"));
3972 &error(&text('emodule', "<i>$u</i>",
3973 "<i>$module_info{'desc'}</i>"));
3976 $main::no_acl_check++;
3979 # Check the Referer: header for nasty redirects
3980 my @referers = split(/\s+/, $gconfig{'referers'});
3982 if ($ENV{'HTTP_REFERER'} =~/^(http|https|ftp):\/\/([^:\/]+:[^@\/]+@)?([^\/:@]+)/) {
3985 my $http_host = $ENV{'HTTP_HOST'};
3986 $http_host =~ s/:\d+$//;
3987 my $unsafe_index = $unsafe_index_cgi ||
3988 &get_module_variable('$unsafe_index_cgi');
3990 ($ENV{'SCRIPT_NAME'} !~ /^\/(index.cgi)?$/ || $unsafe_index) &&
3991 ($ENV{'SCRIPT_NAME'} !~ /^\/([a-z0-9\_\-]+)\/(index.cgi)?$/i ||
3993 $0 !~ /(session_login|pam_login)\.cgi$/ && !$gconfig{'referer'} &&
3994 $ENV{'MINISERV_CONFIG'} && !$main::no_referers_check &&
3995 $ENV{'HTTP_USER_AGENT'} !~ /^Webmin/i &&
3996 ($referer_site && $referer_site ne $http_host &&
3997 &indexof($referer_site, @referers) < 0 ||
3998 !$referer_site && $gconfig{'referers_none'}) &&
3999 !$trust_unknown_referers &&
4000 !&get_module_variable('$trust_unknown_referers')) {
4001 # Looks like a link from elsewhere .. show an error
4002 &header($text{'referer_title'}, "", undef, 0, 1, 1);
4004 $prot = lc($ENV{'HTTPS'}) eq 'on' ? "https" : "http";
4005 my $url = "<tt>".&html_escape("$prot://$ENV{'HTTP_HOST'}$ENV{'REQUEST_URI'}")."</tt>";
4006 if ($referer_site) {
4008 print &text('referer_warn',
4009 "<tt>".&html_escape($ENV{'HTTP_REFERER'})."</tt>", $url);
4011 print &text('referer_fix1', &html_escape($http_host)),"<p>\n";
4012 print &text('referer_fix2', &html_escape($http_host)),"<p>\n";
4015 # No referer info given
4016 print &text('referer_warn_unknown', $url),"<p>\n";
4017 print &text('referer_fix1u'),"<p>\n";
4018 print &text('referer_fix2u'),"<p>\n";
4022 &footer("/", $text{'index'});
4025 $main::no_referers_check++;
4026 $main::completed_referers_check++;
4028 # Call theme post-init
4029 if (defined(&theme_post_init_config)) {
4030 &theme_post_init_config(@_);
4033 # Record that we have done the calling library in this package
4034 my ($callpkg, $lib) = caller();
4036 $main::done_foreign_require{$callpkg,$lib} = 1;
4038 # If a licence checking is enabled, do it now
4039 if ($gconfig{'licence_module'} && !$main::done_licence_module_check &&
4040 &foreign_check($gconfig{'licence_module'}) &&
4041 -r "$root_directory/$gconfig{'licence_module'}/licence_check.pl") {
4042 my $oldpwd = &get_current_dir();
4043 $main::done_licence_module_check++;
4044 $main::licence_module = $gconfig{'licence_module'};
4045 &foreign_require($main::licence_module, "licence_check.pl");
4046 ($main::licence_status, $main::licence_message) =
4047 &foreign_call($main::licence_module, "check_licence");
4051 # Export global variables to caller
4052 if ($main::export_to_caller) {
4053 foreach my $v ('$config_file', '%gconfig', '$null_file',
4054 '$path_separator', '@root_directories',
4055 '$root_directory', '$module_name',
4056 '$base_remote_user', '$remote_user',
4057 '$module_config_directory', '$module_config_file',
4058 '%config', '@current_themes', '$current_theme',
4059 '@theme_root_directories', '$theme_root_directory',
4060 '%tconfig','@theme_configs', '$tb', '$cb', '$scriptname',
4061 '$webmin_logfile', '$current_lang',
4062 '$current_lang_info', '@lang_order_list', '%text',
4063 '%module_info', '$module_root_directory') {
4064 my ($vt, $vn) = split('', $v, 2);
4065 eval "${vt}${callpkg}::${vn} = ${vt}${vn}";
4072 =head2 load_language([module], [directory])
4074 Returns a hashtable mapping text codes to strings in the appropriate language,
4075 based on the $current_lang global variable, which is in turn set based on
4076 the Webmin user's selection. The optional module parameter tells the function
4077 which module to load strings for, and defaults to the calling module. The
4078 optional directory parameter can be used to load strings from a directory
4081 In regular module development you will never need to call this function
4082 directly, as init_config calls it for you, and places the module's strings
4083 into the %text hash.
4089 my $root = $root_directory;
4090 my $ol = $gconfig{'overlang'};
4091 my ($dir) = ($_[1] || "lang");
4093 # Read global lang files
4094 foreach my $o (@lang_order_list) {
4095 my $ok = &read_file_cached("$root/$dir/$o", \%text);
4096 return () if (!$ok && $o eq $default_lang);
4099 foreach my $o (@lang_order_list) {
4100 &read_file_cached("$root/$ol/$o", \%text);
4103 &read_file_cached("$config_directory/custom-lang", \%text);
4106 # Read module's lang files
4107 my $mdir = &module_root_directory($_[0]);
4108 foreach my $o (@lang_order_list) {
4109 &read_file_cached("$mdir/$dir/$o", \%text);
4112 foreach $o (@lang_order_list) {
4113 &read_file_cached("$mdir/$ol/$o", \%text);
4116 &read_file_cached("$config_directory/$_[0]/custom-lang", \%text);
4118 foreach $k (keys %text) {
4119 $text{$k} =~ s/\$(\{([^\}]+)\}|([A-Za-z0-9\.\-\_]+))/text_subs($2 || $3,\%text)/ge;
4122 if (defined(&theme_load_language)) {
4123 &theme_load_language(\%text, $_[0]);
4128 =head2 text_subs(string)
4130 Used internally by load_language to expand $code substitutions in language
4136 if (substr($_[0], 0, 8) eq "include:") {
4139 open(INCLUDE, substr($_[0], 8));
4147 my $t = $_[1]->{$_[0]};
4148 return defined($t) ? $t : '$'.$_[0];
4152 =head2 text(message, [substitute]+)
4154 Returns a translated message from %text, but with $1, $2, etc.. replaced with
4155 the substitute parameters. This makes it easy to use strings with placeholders
4156 that get replaced with programmatically generated text. For example :
4158 print &text('index_hello', $remote_user),"<p>\n";
4163 my $t = &get_module_variable('%text', 1);
4164 my $rv = exists($t->{$_[0]}) ? $t->{$_[0]} : $text{$_[0]};
4165 for(my $i=1; $i<@_; $i++) {
4166 $rv =~ s/\$$i/$_[$i]/g;
4171 =head2 encode_base64(string)
4173 Encodes a string into base64 format, for use in MIME email or HTTP
4174 authorization headers.
4180 pos($_[0]) = 0; # ensure start at the beginning
4181 while ($_[0] =~ /(.{1,57})/gs) {
4182 $res .= substr(pack('u57', $1), 1)."\n";
4185 $res =~ tr|\` -_|AA-Za-z0-9+/|;
4186 my $padding = (3 - length($_[0]) % 3) % 3;
4187 $res =~ s/.{$padding}$/'=' x $padding/e if ($padding);
4191 =head2 decode_base64(string)
4193 Converts a base64-encoded string into plain text. The opposite of encode_base64.
4200 $str =~ tr|A-Za-z0-9+=/||cd; # remove non-base64 chars
4201 if (length($str) % 4) {
4204 $str =~ s/=+$//; # remove padding
4205 $str =~ tr|A-Za-z0-9+/| -_|; # convert to uuencoded format
4206 while ($str =~ /(.{1,60})/gs) {
4207 my $len = chr(32 + length($1)*3/4); # compute length byte
4208 $res .= unpack("u", $len . $1 ); # uudecode
4213 =head2 get_module_info(module, [noclone], [forcache])
4215 Returns a hash containg details of the given module. Some useful keys are :
4217 =item dir - The module directory, like sendmail.
4219 =item desc - Human-readable description, in the current users' language.
4221 =item version - Optional module version number.
4223 =item os_support - List of supported operating systems and versions.
4225 =item category - Category on Webmin's left menu, like net.
4230 return () if ($_[0] =~ /^\./);
4231 my (%rv, $clone, $o);
4232 my $mdir = &module_root_directory($_[0]);
4233 &read_file_cached("$mdir/module.info", \%rv) || return ();
4235 foreach $o (@lang_order_list) {
4236 $rv{"desc"} = $rv{"desc_$o"} if ($rv{"desc_$o"});
4237 $rv{"longdesc"} = $rv{"longdesc_$o"} if ($rv{"longdesc_$o"});
4239 if ($clone && !$_[1] && $config_directory) {
4240 $rv{'clone'} = $rv{'desc'};
4241 &read_file("$config_directory/$_[0]/clone", \%rv);
4244 my %module_categories;
4245 &read_file_cached("$config_directory/webmin.cats", \%module_categories);
4246 my $pn = &get_product_name();
4247 if (defined($rv{'category_'.$pn})) {
4248 # Can override category for webmin/usermin
4249 $rv{'category'} = $rv{'category_'.$pn};
4251 $rv{'realcategory'} = $rv{'category'};
4252 $rv{'category'} = $module_categories{$_[0]}
4253 if (defined($module_categories{$_[0]}));
4255 # Apply description overrides
4256 $rv{'realdesc'} = $rv{'desc'};
4258 &read_file_cached("$config_directory/webmin.descs", \%descs);
4259 if ($descs{$_[0]." ".$current_lang}) {
4260 $rv{'desc'} = $descs{$_[0]." ".$current_lang};
4262 elsif ($descs{$_[0]}) {
4263 $rv{'desc'} = $descs{$_[0]};
4267 # Apply per-user description overridde
4268 my %gaccess = &get_module_acl(undef, "");
4269 if ($gaccess{'desc_'.$_[0]}) {
4270 $rv{'desc'} = $gaccess{'desc_'.$_[0]};
4274 if ($rv{'longdesc'}) {
4275 # All standard modules have an index.cgi
4276 $rv{'index_link'} = 'index.cgi';
4279 # Call theme-specific override function
4280 if (defined(&theme_get_module_info)) {
4281 %rv = &theme_get_module_info(\%rv, $_[0], $_[1], $_[2]);
4287 =head2 get_all_module_infos(cachemode)
4289 Returns a list contains the information on all modules in this webmin
4290 install, including clones. Uses caching to reduce the number of module.info
4291 files that need to be read. Each element of the array is a hash reference
4292 in the same format as returned by get_module_info. The cache mode flag can be :
4293 0 = read and write, 1 = don't read or write, 2 = read only
4296 sub get_all_module_infos
4300 # Is the cache out of date? (ie. have any of the root's changed?)
4301 my $cache_file = "$config_directory/module.infos.cache";
4303 if (&read_file_cached($cache_file, \%cache)) {
4304 foreach my $r (@root_directories) {
4306 if ($st[9] != $cache{'mtime_'.$r}) {
4316 if ($_[0] != 1 && !$changed && $cache{'lang'} eq $current_lang) {
4317 # Can use existing module.info cache
4319 foreach my $k (keys %cache) {
4320 if ($k =~ /^(\S+) (\S+)$/) {
4321 $mods{$1}->{$2} = $cache{$k};
4324 @rv = map { $mods{$_} } (keys %mods) if (%mods);
4327 # Need to rebuild cache
4329 foreach my $r (@root_directories) {
4331 foreach my $m (readdir(DIR)) {
4332 next if ($m =~ /^(config-|\.)/ || $m =~ /\.(cgi|pl)$/);
4333 my %minfo = &get_module_info($m, 0, 1);
4334 next if (!%minfo || !$minfo{'dir'});
4336 foreach $k (keys %minfo) {
4337 $cache{"${m} ${k}"} = $minfo{$k};
4342 $cache{'mtime_'.$r} = $st[9];
4344 $cache{'lang'} = $current_lang;
4345 &write_file($cache_file, \%cache) if (!$_[0] && $< == 0 && $> == 0);
4348 # Override descriptions for modules for current user
4349 my %gaccess = &get_module_acl(undef, "");
4350 foreach my $m (@rv) {
4351 if ($gaccess{"desc_".$m->{'dir'}}) {
4352 $m->{'desc'} = $gaccess{"desc_".$m->{'dir'}};
4356 # Apply installed flags
4358 &read_file_cached("$config_directory/installed.cache", \%installed);
4359 foreach my $m (@rv) {
4360 $m->{'installed'} = $installed{$m->{'dir'}};
4366 =head2 get_theme_info(theme)
4368 Returns a hash containing a theme's details, taken from it's theme.info file.
4369 Some useful keys are :
4371 =item dir - The theme directory, like blue-theme.
4373 =item desc - Human-readable description, in the current users' language.
4375 =item version - Optional module version number.
4377 =item os_support - List of supported operating systems and versions.
4382 return () if ($_[0] =~ /^\./);
4384 my $tdir = &module_root_directory($_[0]);
4385 &read_file("$tdir/theme.info", \%rv) || return ();
4386 foreach my $o (@lang_order_list) {
4387 $rv{"desc"} = $rv{"desc_$o"} if ($rv{"desc_$o"});
4393 =head2 list_languages
4395 Returns an array of supported languages, taken from Webmin's os_list.txt file.
4396 Each is a hash reference with the following keys :
4398 =item lang - The short language code, like es for Spanish.
4400 =item desc - A human-readable description, in English.
4402 =item charset - An optional character set to use when displaying the language.
4404 =item titles - Set to 1 only if Webmin has title images for the language.
4406 =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.
4411 if (!@main::list_languages_cache) {
4414 open(LANG, "$root_directory/lang_list.txt");
4416 if (/^(\S+)\s+(.*)/) {
4417 my $l = { 'desc' => $2 };
4418 foreach $o (split(/,/, $1)) {
4419 if ($o =~ /^([^=]+)=(.*)$/) {
4423 $l->{'index'} = scalar(@rv);
4424 push(@main::list_languages_cache, $l);
4428 @main::list_languages_cache = sort { $a->{'desc'} cmp $b->{'desc'} }
4429 @main::list_languages_cache;
4431 return @main::list_languages_cache;
4434 =head2 read_env_file(file, &hash)
4436 Similar to Webmin's read_file function, but handles files containing shell
4437 environment variables formatted like :
4442 The file parameter is the full path to the file to read, and hash a Perl hash
4443 ref to read names and values into.
4449 &open_readfile(FILE, $_[0]) || return 0;
4452 if (/^\s*(export\s*)?([A-Za-z0-9_\.]+)\s*=\s*"(.*)"/i ||
4453 /^\s*(export\s*)?([A-Za-z0-9_\.]+)\s*=\s*'(.*)'/i ||
4454 /^\s*(export\s*)?([A-Za-z0-9_\.]+)\s*=\s*(.*)/i) {
4462 =head2 write_env_file(file, &hash, [export])
4464 Writes out a hash to a file in name='value' format, suitable for use in a shell
4465 script. The parameters are :
4467 =item file - Full path for a file to write to
4469 =item hash - Hash reference of names and values to write.
4471 =item export - If set to 1, preceed each variable setting with the word 'export'.
4476 my $exp = $_[2] ? "export " : "";
4477 &open_tempfile(FILE, ">$_[0]");
4478 foreach my $k (keys %{$_[1]}) {
4479 my $v = $_[1]->{$k};
4480 if ($v =~ /^\S+$/) {
4481 &print_tempfile(FILE, "$exp$k=$v\n");
4484 &print_tempfile(FILE, "$exp$k=\"$v\"\n");
4487 &close_tempfile(FILE);
4490 =head2 lock_file(filename, [readonly], [forcefile])
4492 Lock a file for exclusive access. If the file is already locked, spin
4493 until it is freed. Uses a .lock file, which is not 100% reliable, but seems
4494 to work OK. The parameters are :
4496 =item filename - File or directory to lock.
4498 =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.
4500 =item forcefile - Force the file to be considered as a real file and not a symlink for Webmin actions logging purposes.
4505 my $realfile = &translate_filename($_[0]);
4506 return 0 if (!$_[0] || defined($main::locked_file_list{$realfile}));
4507 my $no_lock = !&can_lock_file($realfile);
4508 my $lock_tries_count = 0;
4511 if (!$no_lock && open(LOCKING, "$realfile.lock")) {
4516 if ($no_lock || !$pid || !kill(0, $pid) || $pid == $$) {
4519 # Create the .lock file
4520 open(LOCKING, ">$realfile.lock") || return 0;
4521 my $lck = eval "flock(LOCKING, 2+4)";
4523 # Lock of lock file failed! Wait till later
4526 print LOCKING $$,"\n";
4527 eval "flock(LOCKING, 8)";
4530 $main::locked_file_list{$realfile} = int($_[1]);
4531 push(@main::temporary_files, "$realfile.lock");
4532 if (($gconfig{'logfiles'} || $gconfig{'logfullfiles'}) &&
4533 !&get_module_variable('$no_log_file_changes') &&
4535 # Grab a copy of this file for later diffing
4537 $main::locked_file_data{$realfile} = undef;
4539 $main::locked_file_type{$realfile} = 1;
4540 $main::locked_file_data{$realfile} = '';
4542 elsif (!$_[2] && ($lnk = readlink($realfile))) {
4543 $main::locked_file_type{$realfile} = 2;
4544 $main::locked_file_data{$realfile} = $lnk;
4546 elsif (open(ORIGFILE, $realfile)) {
4547 $main::locked_file_type{$realfile} = 0;
4548 $main::locked_file_data{$realfile} = '';
4551 $main::locked_file_data{$realfile} .=$_;
4560 if ($lock_tries_count++ > 5*60) {
4561 # Give up after 5 minutes
4562 &error(&text('elock_tries', "<tt>$realfile</tt>", 5));
4568 =head2 unlock_file(filename)
4570 Release a lock on a file taken out by lock_file. If Webmin actions logging of
4571 file changes is enabled, then at unlock file a diff will be taken between the
4572 old and new contents, and stored under /var/webmin/diffs when webmin_log is
4573 called. This can then be viewed in the Webmin Actions Log module.
4578 my $realfile = &translate_filename($_[0]);
4579 return if (!$_[0] || !defined($main::locked_file_list{$realfile}));
4580 unlink("$realfile.lock") if (&can_lock_file($realfile));
4581 delete($main::locked_file_list{$realfile});
4582 if (exists($main::locked_file_data{$realfile})) {
4583 # Diff the new file with the old
4585 my $lnk = readlink($realfile);
4586 my $type = -d _ ? 1 : $lnk ? 2 : 0;
4587 my $oldtype = $main::locked_file_type{$realfile};
4588 my $new = !defined($main::locked_file_data{$realfile});
4589 if ($new && !-e _) {
4590 # file doesn't exist, and never did! do nothing ..
4592 elsif ($new && $type == 1 || !$new && $oldtype == 1) {
4593 # is (or was) a directory ..
4594 if (-d _ && !defined($main::locked_file_data{$realfile})) {
4595 push(@main::locked_file_diff,
4596 { 'type' => 'mkdir', 'object' => $realfile });
4598 elsif (!-d _ && defined($main::locked_file_data{$realfile})) {
4599 push(@main::locked_file_diff,
4600 { 'type' => 'rmdir', 'object' => $realfile });
4603 elsif ($new && $type == 2 || !$new && $oldtype == 2) {
4604 # is (or was) a symlink ..
4605 if ($lnk && !defined($main::locked_file_data{$realfile})) {
4606 push(@main::locked_file_diff,
4607 { 'type' => 'symlink', 'object' => $realfile,
4610 elsif (!$lnk && defined($main::locked_file_data{$realfile})) {
4611 push(@main::locked_file_diff,
4612 { 'type' => 'unsymlink', 'object' => $realfile,
4613 'data' => $main::locked_file_data{$realfile} });
4615 elsif ($lnk ne $main::locked_file_data{$realfile}) {
4616 push(@main::locked_file_diff,
4617 { 'type' => 'resymlink', 'object' => $realfile,
4622 # is a file, or has changed type?!
4623 my ($diff, $delete_file);
4624 my $type = "modify";
4626 open(NEWFILE, ">$realfile");
4631 if (!defined($main::locked_file_data{$realfile})) {
4634 open(ORIGFILE, ">$realfile.webminorig");
4635 print ORIGFILE $main::locked_file_data{$realfile};
4637 $diff = &backquote_command(
4638 "diff ".quotemeta("$realfile.webminorig")." ".
4639 quotemeta($realfile)." 2>/dev/null");
4640 push(@main::locked_file_diff,
4641 { 'type' => $type, 'object' => $realfile,
4642 'data' => $diff } ) if ($diff);
4643 unlink("$realfile.webminorig");
4644 unlink($realfile) if ($delete_file);
4647 if ($gconfig{'logfullfiles'}) {
4648 # Add file details to list of those to fully log
4649 $main::orig_file_data{$realfile} ||=
4650 $main::locked_file_data{$realfile};
4651 $main::orig_file_type{$realfile} ||=
4652 $main::locked_file_type{$realfile};
4655 delete($main::locked_file_data{$realfile});
4656 delete($main::locked_file_type{$realfile});
4660 =head2 test_lock(file)
4662 Returns 1 if some file is currently locked, 0 if not.
4667 my $realfile = &translate_filename($_[0]);
4668 return 0 if (!$_[0]);
4669 return 1 if (defined($main::locked_file_list{$realfile}));
4670 return 0 if (!&can_lock_file($realfile));
4672 if (open(LOCKING, "$realfile.lock")) {
4677 return $pid && kill(0, $pid);
4680 =head2 unlock_all_files
4682 Unlocks all files locked by the current script.
4685 sub unlock_all_files
4687 foreach $f (keys %main::locked_file_list) {
4692 =head2 can_lock_file(file)
4694 Returns 1 if some file should be locked, based on the settings in the
4695 Webmin Configuration module. For internal use by lock_file only.
4700 if (&is_readonly_mode()) {
4701 return 0; # never lock in read-only mode
4703 elsif ($gconfig{'lockmode'} == 0) {
4706 elsif ($gconfig{'lockmode'} == 1) {
4710 # Check if under any of the directories
4712 foreach my $d (split(/\t+/, $gconfig{'lockdirs'})) {
4713 if (&same_file($d, $_[0]) ||
4714 &is_under_directory($d, $_[0])) {
4718 return $gconfig{'lockmode'} == 2 ? $match : !$match;
4722 =head2 webmin_log(action, type, object, ¶ms, [module], [host, script-on-host, client-ip])
4724 Log some action taken by a user. This is typically called at the end of a
4725 script, once all file changes are complete and all commands run. The
4728 =item action - A short code for the action being performed, like 'create'.
4730 =item type - A code for the type of object the action is performed to, like 'user'.
4732 =item object - A short name for the object, like 'joe' if the Unix user 'joe' was just created.
4734 =item params - A hash ref of additional information about the action.
4736 =item module - Name of the module in which the action was performed, which defaults to the current module.
4738 =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.
4740 =item script-on-host - Script name like create_user.cgi on the host the action was performed on.
4742 =item client-ip - IP address of the browser that performed the action.
4747 return if (!$gconfig{'log'} || &is_readonly_mode());
4748 my $m = $_[4] ? $_[4] : &get_module_name();
4750 if ($gconfig{'logclear'}) {
4751 # check if it is time to clear the log
4752 my @st = stat("$webmin_logfile.time");
4753 my $write_logtime = 0;
4755 if ($st[9]+$gconfig{'logtime'}*60*60 < time()) {
4756 # clear logfile and all diff files
4757 &unlink_file("$ENV{'WEBMIN_VAR'}/diffs");
4758 &unlink_file("$ENV{'WEBMIN_VAR'}/files");
4759 &unlink_file("$ENV{'WEBMIN_VAR'}/annotations");
4760 unlink($webmin_logfile);
4767 if ($write_logtime) {
4768 open(LOGTIME, ">$webmin_logfile.time");
4769 print LOGTIME time(),"\n";
4774 # If an action script directory is defined, call the appropriate scripts
4775 if ($gconfig{'action_script_dir'}) {
4776 my ($action, $type, $object) = ($_[0], $_[1], $_[2]);
4777 my ($basedir) = $gconfig{'action_script_dir'};
4779 for my $dir ($basedir/$type/$action, $basedir/$type, $basedir) {
4782 opendir(DIR, $dir) or die "Can't open $dir: $!";
4783 while (defined($file = readdir(DIR))) {
4784 next if ($file =~ /^\.\.?$/); # skip '.' and '..'
4785 if (-x "$dir/$file") {
4786 # Call a script notifying it of the action
4788 $ENV{'ACTION_MODULE'} = &get_module_name();
4789 $ENV{'ACTION_ACTION'} = $_[0];
4790 $ENV{'ACTION_TYPE'} = $_[1];
4791 $ENV{'ACTION_OBJECT'} = $_[2];
4792 $ENV{'ACTION_SCRIPT'} = $script_name;
4793 foreach my $p (keys %param) {
4794 $ENV{'ACTION_PARAM_'.uc($p)} = $param{$p};
4796 system("$dir/$file", @_,
4797 "<$null_file", ">$null_file", "2>&1");
4805 # should logging be done at all?
4806 return if ($gconfig{'logusers'} && &indexof($base_remote_user,
4807 split(/\s+/, $gconfig{'logusers'})) < 0);
4808 return if ($gconfig{'logmodules'} && &indexof($m,
4809 split(/\s+/, $gconfig{'logmodules'})) < 0);
4813 my @tm = localtime($now);
4814 my $script_name = $0 =~ /([^\/]+)$/ ? $1 : '-';
4815 my $id = sprintf "%d.%d.%d", $now, $$, $main::action_id_count;
4816 $main::action_id_count++;
4817 my $line = sprintf "%s [%2.2d/%s/%4.4d %2.2d:%2.2d:%2.2d] %s %s %s %s %s \"%s\" \"%s\" \"%s\"",
4818 $id, $tm[3], $text{"smonth_".($tm[4]+1)}, $tm[5]+1900,
4819 $tm[2], $tm[1], $tm[0],
4820 $remote_user || '-',
4821 $main::session_id || '-',
4822 $_[7] || $ENV{'REMOTE_HOST'} || '-',
4823 $m, $_[5] ? "$_[5]:$_[6]" : $script_name,
4824 $_[0], $_[1] ne '' ? $_[1] : '-', $_[2] ne '' ? $_[2] : '-';
4826 foreach my $k (sort { $a cmp $b } keys %{$_[3]}) {
4827 my $v = $_[3]->{$k};
4833 elsif (ref($v) eq 'ARRAY') {
4837 $vv =~ s/(['"\\\r\n\t\%])/sprintf("%%%2.2X",ord($1))/ge;
4838 $line .= " $k='$vv'";
4842 foreach $vv (split(/\0/, $v)) {
4844 $vv =~ s/(['"\\\r\n\t\%])/sprintf("%%%2.2X",ord($1))/ge;
4845 $line .= " $k='$vv'";
4848 $param{$k} = join(" ", @pv);
4850 open(WEBMINLOG, ">>$webmin_logfile");
4851 print WEBMINLOG $line,"\n";
4853 if ($gconfig{'logperms'}) {
4854 chmod(oct($gconfig{'logperms'}), $webmin_logfile);
4857 chmod(0600, $webmin_logfile);
4860 if ($gconfig{'logfiles'} && !&get_module_variable('$no_log_file_changes')) {
4861 # Find and record the changes made to any locked files, or commands run
4863 mkdir("$ENV{'WEBMIN_VAR'}/diffs", 0700);
4864 foreach my $d (@main::locked_file_diff) {
4865 mkdir("$ENV{'WEBMIN_VAR'}/diffs/$id", 0700);
4866 open(DIFFLOG, ">$ENV{'WEBMIN_VAR'}/diffs/$id/$i");
4867 print DIFFLOG "$d->{'type'} $d->{'object'}\n";
4868 print DIFFLOG $d->{'data'};
4870 if ($d->{'input'}) {
4871 open(DIFFLOG, ">$ENV{'WEBMIN_VAR'}/diffs/$id/$i.input");
4872 print DIFFLOG $d->{'input'};
4875 if ($gconfig{'logperms'}) {
4876 chmod(oct($gconfig{'logperms'}),
4877 "$ENV{'WEBMIN_VAR'}/diffs/$id/$i",
4878 "$ENV{'WEBMIN_VAR'}/diffs/$id/$i.input");
4882 @main::locked_file_diff = undef;
4884 if ($gconfig{'logfullfiles'}) {
4885 # Save the original contents of any modified files
4887 mkdir("$ENV{'WEBMIN_VAR'}/files", 0700);
4888 foreach my $f (keys %main::orig_file_data) {
4889 mkdir("$ENV{'WEBMIN_VAR'}/files/$id", 0700);
4890 open(ORIGLOG, ">$ENV{'WEBMIN_VAR'}/files/$id/$i");
4891 if (!defined($main::orig_file_type{$f})) {
4892 print ORIGLOG -1," ",$f,"\n";
4895 print ORIGLOG $main::orig_file_type{$f}," ",$f,"\n";
4897 print ORIGLOG $main::orig_file_data{$f};
4899 if ($gconfig{'logperms'}) {
4900 chmod(oct($gconfig{'logperms'}),
4901 "$ENV{'WEBMIN_VAR'}/files/$id.$i");
4905 %main::orig_file_data = undef;
4906 %main::orig_file_type = undef;
4910 if ($gconfig{'logsyslog'}) {
4911 eval 'use Sys::Syslog qw(:DEFAULT setlogsock);
4912 openlog(&get_product_name(), "cons,pid,ndelay", "daemon");
4913 setlogsock("inet");';
4915 # Syslog module is installed .. try to convert to a
4916 # human-readable form
4918 my $mod = &get_module_name();
4919 my $mdir = module_root_directory($mod);
4920 if (-r "$mdir/log_parser.pl") {
4921 &foreign_require($mod, "log_parser.pl");
4923 foreach my $k (keys %{$_[3]}) {
4924 my $v = $_[3]->{$k};
4925 if (ref($v) eq 'ARRAY') {
4926 $params{$k} = join("\0", @$v);
4932 $msg = &foreign_call($mod, "parse_webmin_log",
4933 $remote_user, $script_name,
4934 $_[0], $_[1], $_[2], \%params);
4935 $msg =~ s/<[^>]*>//g; # Remove tags
4937 elsif ($_[0] eq "_config_") {
4938 my %wtext = &load_language("webminlog");
4939 $msg = $wtext{'search_config'};
4941 $msg ||= "$_[0] $_[1] $_[2]";
4942 my %info = &get_module_info($m);
4943 eval { syslog("info", "%s", "[$info{'desc'}] $msg"); };
4948 =head2 additional_log(type, object, data, [input])
4950 Records additional log data for an upcoming call to webmin_log, such
4951 as a command that was run or SQL that was executed. Typically you will never
4952 need to call this function directory.
4957 if ($gconfig{'logfiles'} && !&get_module_variable('$no_log_file_changes')) {
4958 push(@main::locked_file_diff,
4959 { 'type' => $_[0], 'object' => $_[1], 'data' => $_[2],
4960 'input' => $_[3] } );
4964 =head2 webmin_debug_log(type, message)
4966 Write something to the Webmin debug log. For internal use only.
4969 sub webmin_debug_log
4971 my ($type, $msg) = @_;
4972 return 0 if (!$main::opened_debug_log);
4973 return 0 if ($gconfig{'debug_no'.$main::webmin_script_type});
4974 if ($gconfig{'debug_modules'}) {
4975 my @dmods = split(/\s+/, $gconfig{'debug_modules'});
4976 return 0 if (&indexof($main::initial_module_name, @dmods) < 0);
4979 my @tm = localtime($now);
4981 "%s [%2.2d/%s/%4.4d %2.2d:%2.2d:%2.2d] %s %s %s %s \"%s\"",
4982 $$, $tm[3], $text{"smonth_".($tm[4]+1)}, $tm[5]+1900,
4983 $tm[2], $tm[1], $tm[0],
4984 $remote_user || "-",
4985 $ENV{'REMOTE_HOST'} || "-",
4986 &get_module_name() || "-",
4989 seek(main::DEBUGLOG, 0, 2);
4990 print main::DEBUGLOG $line."\n";
4994 =head2 system_logged(command)
4996 Just calls the Perl system() function, but also logs the command run.
5001 if (&is_readonly_mode()) {
5002 print STDERR "Vetoing command $_[0]\n";
5005 my @realcmd = ( &translate_command($_[0]), @_[1..$#_] );
5006 my $cmd = join(" ", @realcmd);
5008 if ($cmd =~ s/(\s*&\s*)$//) {
5011 while($cmd =~ s/(\d*)(<|>)((\/(tmp|dev)\S+)|&\d+)\s*$//) { }
5012 $cmd =~ s/^\((.*)\)\s*$/$1/;
5014 &additional_log('exec', undef, $cmd);
5015 return system(@realcmd);
5018 =head2 backquote_logged(command)
5020 Executes a command and returns the output (like `command`), but also logs it.
5023 sub backquote_logged
5025 if (&is_readonly_mode()) {
5027 print STDERR "Vetoing command $_[0]\n";
5030 my $realcmd = &translate_command($_[0]);
5033 if ($cmd =~ s/(\s*&\s*)$//) {
5036 while($cmd =~ s/(\d*)(<|>)((\/(tmp\/.webmin|dev)\S+)|&\d+)\s*$//) { }
5037 $cmd =~ s/^\((.*)\)\s*$/$1/;
5039 &additional_log('exec', undef, $cmd);
5040 &webmin_debug_log('CMD', "cmd=$cmd") if ($gconfig{'debug_what_cmd'});
5044 =head2 backquote_with_timeout(command, timeout, safe?, [maxlines])
5046 Runs some command, waiting at most the given number of seconds for it to
5047 complete, and returns the output. The maxlines parameter sets the number
5048 of lines of output to capture. The safe parameter should be set to 1 if the
5049 command is safe for read-only mode users to run.
5052 sub backquote_with_timeout
5054 my $realcmd = &translate_command($_[0]);
5055 &webmin_debug_log('CMD', "cmd=$realcmd timeout=$_[1]")
5056 if ($gconfig{'debug_what_cmd'});
5058 my $pid = &open_execute_command(OUT, "($realcmd) <$null_file", 1, $_[2]);
5063 my $elapsed = time() - $start;
5064 last if ($elapsed > $_[1]);
5066 vec($rmask, fileno(OUT), 1) = 1;
5067 my $sel = select($rmask, undef, undef, $_[1] - $elapsed);
5068 last if (!$sel || $sel < 0);
5070 last if (!defined($line));
5073 if ($_[3] && $linecount >= $_[3]) {
5078 if (kill('TERM', $pid) && time() - $start >= $_[1]) {
5082 return wantarray ? ($out, $timed_out) : $out;
5085 =head2 backquote_command(command, safe?)
5087 Executes a command and returns the output (like `command`), subject to
5088 command translation. The safe parameter should be set to 1 if the command
5089 is safe for read-only mode users to run.
5092 sub backquote_command
5094 if (&is_readonly_mode() && !$_[1]) {
5095 print STDERR "Vetoing command $_[0]\n";
5099 my $realcmd = &translate_command($_[0]);
5100 &webmin_debug_log('CMD', "cmd=$realcmd") if ($gconfig{'debug_what_cmd'});
5104 =head2 kill_logged(signal, pid, ...)
5106 Like Perl's built-in kill function, but also logs the fact that some process
5107 was killed. On Windows, falls back to calling process.exe to terminate a
5113 return scalar(@_)-1 if (&is_readonly_mode());
5114 &webmin_debug_log('KILL', "signal=$_[0] pids=".join(" ", @_[1..@_-1]))
5115 if ($gconfig{'debug_what_procs'});
5116 &additional_log('kill', $_[0], join(" ", @_[1..@_-1])) if (@_ > 1);
5117 if ($gconfig{'os_type'} eq 'windows') {
5118 # Emulate some kills with process.exe
5119 my $arg = $_[0] eq "KILL" ? "-k" :
5120 $_[0] eq "TERM" ? "-q" :
5121 $_[0] eq "STOP" ? "-s" :
5122 $_[0] eq "CONT" ? "-r" : undef;
5124 foreach my $p (@_[1..@_-1]) {
5126 $ok ||= kill($_[0], $p);
5129 &execute_command("process $arg $p");
5141 =head2 rename_logged(old, new)
5143 Re-names a file and logs the rename. If the old and new files are on different
5144 filesystems, calls mv or the Windows rename function to do the job.
5149 &additional_log('rename', $_[0], $_[1]) if ($_[0] ne $_[1]);
5150 return &rename_file($_[0], $_[1]);
5153 =head2 rename_file(old, new)
5155 Renames a file or directory. If the old and new files are on different
5156 filesystems, calls mv or the Windows rename function to do the job.
5161 if (&is_readonly_mode()) {
5162 print STDERR "Vetoing rename from $_[0] to $_[1]\n";
5165 my $src = &translate_filename($_[0]);
5166 my $dst = &translate_filename($_[1]);
5167 &webmin_debug_log('RENAME', "src=$src dst=$dst")
5168 if ($gconfig{'debug_what_ops'});
5169 my $ok = rename($src, $dst);
5170 if (!$ok && $! !~ /permission/i) {
5171 # Try the mv command, in case this is a cross-filesystem rename
5172 if ($gconfig{'os_type'} eq 'windows') {
5173 # Need to use rename
5174 my $out = &backquote_command("rename ".quotemeta($_[0]).
5175 " ".quotemeta($_[1])." 2>&1");
5177 $! = $out if (!$ok);
5181 my $out = &backquote_command("mv ".quotemeta($_[0]).
5182 " ".quotemeta($_[1])." 2>&1");
5184 $! = $out if (!$ok);
5190 =head2 symlink_logged(src, dest)
5192 Create a symlink, and logs it. Effectively does the same thing as the Perl
5199 my $rv = &symlink_file($_[0], $_[1]);
5200 &unlock_file($_[1]);
5204 =head2 symlink_file(src, dest)
5206 Creates a soft link, unless in read-only mode. Effectively does the same thing
5207 as the Perl symlink function.
5212 if (&is_readonly_mode()) {
5213 print STDERR "Vetoing symlink from $_[0] to $_[1]\n";
5216 my $src = &translate_filename($_[0]);
5217 my $dst = &translate_filename($_[1]);
5218 &webmin_debug_log('SYMLINK', "src=$src dst=$dst")
5219 if ($gconfig{'debug_what_ops'});
5220 return symlink($src, $dst);
5223 =head2 link_file(src, dest)
5225 Creates a hard link, unless in read-only mode. The existing new link file
5226 will be deleted if necessary. Effectively the same as Perl's link function.
5231 if (&is_readonly_mode()) {
5232 print STDERR "Vetoing link from $_[0] to $_[1]\n";
5235 my $src = &translate_filename($_[0]);
5236 my $dst = &translate_filename($_[1]);
5237 &webmin_debug_log('LINK', "src=$src dst=$dst")
5238 if ($gconfig{'debug_what_ops'});
5239 unlink($dst); # make sure link works
5240 return link($src, $dst);
5243 =head2 make_dir(dir, perms, recursive)
5245 Creates a directory and sets permissions on it, unless in read-only mode.
5246 The perms parameter sets the octal permissions to apply, which unlike Perl's
5247 mkdir will really get set. The recursive flag can be set to 1 to have the
5248 function create parent directories too.
5253 my ($dir, $perms, $recur) = @_;
5254 if (&is_readonly_mode()) {
5255 print STDERR "Vetoing directory $dir\n";
5258 $dir = &translate_filename($dir);
5259 my $exists = -d $dir ? 1 : 0;
5260 return 1 if ($exists && $recur); # already exists
5261 &webmin_debug_log('MKDIR', $dir) if ($gconfig{'debug_what_ops'});
5262 my $rv = mkdir($dir, $perms);
5263 if (!$rv && $recur) {
5264 # Failed .. try mkdir -p
5265 my $param = $gconfig{'os_type'} eq 'windows' ? "" : "-p";
5266 my $ex = &execute_command("mkdir $param "."e_path($dir));
5272 chmod($perms, $dir);
5277 =head2 set_ownership_permissions(user, group, perms, file, ...)
5279 Sets the user, group owner and permissions on some files. The parameters are :
5281 =item user - UID or username to change the file owner to. If undef, then the owner is not changed.
5283 =item group - GID or group name to change the file group to. If undef, then the group is set to the user's primary group.
5285 =item perms - Octal permissions set to set on the file. If undef, they are left alone.
5287 =item file - One or more files or directories to modify.
5290 sub set_ownership_permissions
5292 my ($user, $group, $perms, @files) = @_;
5293 if (&is_readonly_mode()) {
5294 print STDERR "Vetoing permission changes on ",join(" ", @files),"\n";
5297 @files = map { &translate_filename($_) } @files;
5298 if ($gconfig{'debug_what_ops'}) {
5299 foreach my $f (@files) {
5300 &webmin_debug_log('PERMS',
5301 "file=$f user=$user group=$group perms=$perms");
5305 if (defined($user)) {
5306 my $uid = $user !~ /^\d+$/ ? getpwnam($user) : $user;
5308 if (defined($group)) {
5309 $gid = $group !~ /^\d+$/ ? getgrnam($group) : $group;
5312 my @uinfo = getpwuid($uid);
5315 $rv = chown($uid, $gid, @files);
5317 if ($rv && defined($perms)) {
5318 $rv = chmod($perms, @files);
5323 =head2 unlink_logged(file, ...)
5325 Like Perl's unlink function, but locks the files beforehand and un-locks them
5326 after so that the deletion is logged by Webmin.
5332 foreach my $f (@_) {
5333 if (!&test_lock($f)) {
5338 my @rv = &unlink_file(@_);
5339 foreach my $f (@_) {
5344 return wantarray ? @rv : $rv[0];
5347 =head2 unlink_file(file, ...)
5349 Deletes some files or directories. Like Perl's unlink function, but also
5350 recursively deletes directories with the rm command if needed.
5355 return 1 if (&is_readonly_mode());
5358 foreach my $f (@_) {
5359 &unflush_file_lines($f);
5360 my $realf = &translate_filename($f);
5361 &webmin_debug_log('UNLINK', $realf) if ($gconfig{'debug_what_ops'});
5363 if (!rmdir($realf)) {
5365 if ($gconfig{'os_type'} eq 'windows') {
5366 # Call del and rmdir commands
5369 my $out = `del /q "$qm" 2>&1`;
5371 $out = `rmdir "$qm" 2>&1`;
5376 my $qm = quotemeta($realf);
5377 $out = `rm -rf $qm 2>&1`;
5386 if (!unlink($realf)) {
5392 return wantarray ? ($rv, $err) : $rv;
5395 =head2 copy_source_dest(source, dest)
5397 Copy some file or directory to a new location. Returns 1 on success, or 0
5398 on failure - also sets $! on failure. If the source is a directory, uses
5399 piped tar commands to copy a whole directory structure including permissions
5403 sub copy_source_dest
5405 return (1, undef) if (&is_readonly_mode());
5406 my ($src, $dst) = @_;
5409 &webmin_debug_log('COPY', "src=$src dst=$dst")
5410 if ($gconfig{'debug_what_ops'});
5411 if ($gconfig{'os_type'} eq 'windows') {
5412 # No tar or cp on windows, so need to use copy command
5416 $out = &backquote_logged("xcopy \"$src\" \"$dst\" /Y /E /I 2>&1");
5419 $out = &backquote_logged("copy /Y \"$src\" \"$dst\" 2>&1");
5427 # A directory .. need to copy with tar command
5428 my @st = stat($src);
5431 &set_ownership_permissions($st[4], $st[5], $st[2], $dst);
5432 $out = &backquote_logged("(cd ".quotemeta($src)." ; tar cf - . | (cd ".quotemeta($dst)." ; tar xf -)) 2>&1");
5439 # Can just copy with cp
5440 my $out = &backquote_logged("cp -p ".quotemeta($src).
5441 " ".quotemeta($dst)." 2>&1");
5447 return wantarray ? ($ok, $err) : $ok;
5450 =head2 remote_session_name(host|&server)
5452 Generates a session ID for some server. For this server, this will always
5453 be an empty string. For a server object it will include the hostname and
5454 port and PID. For a server name, it will include the hostname and PID. For
5458 sub remote_session_name
5460 return ref($_[0]) && $_[0]->{'host'} && $_[0]->{'port'} ?
5461 "$_[0]->{'host'}:$_[0]->{'port'}.$$" :
5462 $_[0] eq "" || ref($_[0]) && $_[0]->{'id'} == 0 ? "" :
5463 ref($_[0]) ? "" : "$_[0].$$";
5466 =head2 remote_foreign_require(server, module, file)
5468 Connects to rpc.cgi on a remote webmin server and have it open a session
5469 to a process that will actually do the require and run functions. This is the
5470 equivalent for foreign_require, but for a remote Webmin system. The server
5471 parameter can either be a hostname of a system registered in the Webmin
5472 Servers Index module, or a hash reference for a system from that module.
5475 sub remote_foreign_require
5477 my $call = { 'action' => 'require',
5480 my $sn = &remote_session_name($_[0]);
5481 if ($remote_session{$sn}) {
5482 $call->{'session'} = $remote_session{$sn};
5485 $call->{'newsession'} = 1;
5487 my $rv = &remote_rpc_call($_[0], $call);
5488 if ($rv->{'session'}) {
5489 $remote_session{$sn} = $rv->{'session'};
5490 $remote_session_server{$sn} = $_[0];
5494 =head2 remote_foreign_call(server, module, function, [arg]*)
5496 Call a function on a remote server. Must have been setup first with
5497 remote_foreign_require for the same server and module. Equivalent to
5498 foreign_call, but with the extra server parameter to specify the remote
5502 sub remote_foreign_call
5504 return undef if (&is_readonly_mode());
5505 my $sn = &remote_session_name($_[0]);
5506 return &remote_rpc_call($_[0], { 'action' => 'call',
5509 'session' => $remote_session{$sn},
5510 'args' => [ @_[3 .. $#_] ] } );
5513 =head2 remote_foreign_check(server, module, [api-only])
5515 Checks if some module is installed and supported on a remote server. Equivilant
5516 to foreign_check, but for the remote Webmin system specified by the server
5520 sub remote_foreign_check
5522 return &remote_rpc_call($_[0], { 'action' => 'check',
5527 =head2 remote_foreign_config(server, module)
5529 Gets the configuration for some module from a remote server, as a hash.
5530 Equivalent to foreign_config, but for a remote system.
5533 sub remote_foreign_config
5535 return &remote_rpc_call($_[0], { 'action' => 'config',
5536 'module' => $_[1] });
5539 =head2 remote_eval(server, module, code)
5541 Evaluates some perl code in the context of a module on a remote webmin server.
5542 The server parameter must be the hostname of a remote system, module must
5543 be a module directory name, and code a string of Perl code to run. This can
5544 only be called after remote_foreign_require for the same server and module.
5549 return undef if (&is_readonly_mode());
5550 my $sn = &remote_session_name($_[0]);
5551 return &remote_rpc_call($_[0], { 'action' => 'eval',
5554 'session' => $remote_session{$sn} });
5557 =head2 remote_write(server, localfile, [remotefile], [remotebasename])
5559 Transfers some local file to another server via Webmin's RPC protocol, and
5560 returns the resulting remote filename. If the remotefile parameter is given,
5561 that is the destination filename which will be used. Otherwise a randomly
5562 selected temporary filename will be used, and returned by the function.
5567 return undef if (&is_readonly_mode());
5569 my $sn = &remote_session_name($_[0]);
5570 if (!$_[0] || $remote_server_version{$sn} >= 0.966) {
5571 # Copy data over TCP connection
5572 my $rv = &remote_rpc_call($_[0], { 'action' => 'tcpwrite',
5574 'name' => $_[3] } );
5576 my $serv = ref($_[0]) ? $_[0]->{'host'} : $_[0];
5577 &open_socket($serv || "localhost", $rv->[1], TWRITE, \$error);
5578 return &$main::remote_error_handler("Failed to transfer file : $error")
5581 while(read(FILE, $got, 1024) > 0) {
5585 shutdown(TWRITE, 1);
5587 if ($error && $error !~ /^OK/) {
5588 # Got back an error!
5589 return &$main::remote_error_handler("Failed to transfer file : $error");
5595 # Just pass file contents as parameters
5597 while(read(FILE, $got, 1024) > 0) {
5601 return &remote_rpc_call($_[0], { 'action' => 'write',
5604 'session' => $remote_session{$sn} });
5608 =head2 remote_read(server, localfile, remotefile)
5610 Transfers a file from a remote server to this system, using Webmin's RPC
5611 protocol. The server parameter must be the hostname of a system registered
5612 in the Webmin Servers Index module, localfile is the destination path on this
5613 system, and remotefile is the file to fetch from the remote server.
5618 my $sn = &remote_session_name($_[0]);
5619 if (!$_[0] || $remote_server_version{$sn} >= 0.966) {
5620 # Copy data over TCP connection
5621 my $rv = &remote_rpc_call($_[0], { 'action' => 'tcpread',
5622 'file' => $_[2] } );
5624 return &$main::remote_error_handler("Failed to transfer file : $rv->[1]");
5627 my $serv = ref($_[0]) ? $_[0]->{'host'} : $_[0];
5628 &open_socket($serv || "localhost", $rv->[1], TREAD, \$error);
5629 return &$main::remote_error_handler("Failed to transfer file : $error")
5632 open(FILE, ">$_[1]");
5633 while(read(TREAD, $got, 1024) > 0) {
5640 # Just get data as return value
5641 my $d = &remote_rpc_call($_[0], { 'action' => 'read',
5643 'session' => $remote_session{$sn} });
5644 open(FILE, ">$_[1]");
5650 =head2 remote_finished
5652 Close all remote sessions. This happens automatically after a while
5653 anyway, but this function should be called to clean things up faster.
5658 foreach my $sn (keys %remote_session) {
5659 my $server = $remote_session_server{$sn};
5660 &remote_rpc_call($server, { 'action' => 'quit',
5661 'session' => $remote_session{$sn} } );
5662 delete($remote_session{$sn});
5663 delete($remote_session_server{$sn});
5665 foreach $fh (keys %fast_fh_cache) {
5667 delete($fast_fh_cache{$fh});
5671 =head2 remote_error_setup(&function)
5673 Sets a function to be called instead of &error when a remote RPC operation
5674 fails. Useful if you want to have more control over your remote operations.
5677 sub remote_error_setup
5679 $main::remote_error_handler = $_[0] || \&error;
5682 =head2 remote_rpc_call(server, structure)
5684 Calls rpc.cgi on some server and passes it a perl structure (hash,array,etc)
5685 and then reads back a reply structure. This is mainly for internal use only,
5686 and is called by the other remote_* functions.
5692 my $sn = &remote_session_name($_[0]); # Will be undef for local connection
5694 # Server structure was given
5696 $serv->{'user'} || $serv->{'id'} == 0 ||
5697 return &$main::remote_error_handler(
5698 "No Webmin login set for server");
5701 # lookup the server in the webmin servers module if needed
5702 if (!%main::remote_servers_cache) {
5703 &foreign_require("servers", "servers-lib.pl");
5704 foreach $s (&foreign_call("servers", "list_servers")) {
5705 $main::remote_servers_cache{$s->{'host'}} = $s;
5706 $main::remote_servers_cache{$s->{'host'}.":".$s->{'port'}} = $s;
5709 $serv = $main::remote_servers_cache{$_[0]};
5710 $serv || return &$main::remote_error_handler(
5711 "No Webmin Servers entry for $_[0]");
5712 $serv->{'user'} || return &$main::remote_error_handler(
5713 "No login set for server $_[0]");
5715 my $ip = $serv->{'ip'} || $serv->{'host'};
5717 # Work out the username and password
5719 if ($serv->{'sameuser'}) {
5720 $user = $remote_user;
5721 defined($main::remote_pass) || return &$main::remote_error_handler(
5722 "Password for this server is not available");
5723 $pass = $main::remote_pass;
5726 $user = $serv->{'user'};
5727 $pass = $serv->{'pass'};
5730 if ($serv->{'fast'} || !$sn) {
5731 # Make TCP connection call to fastrpc.cgi
5732 if (!$fast_fh_cache{$sn} && $sn) {
5733 # Need to open the connection
5734 my $con = &make_http_connection(
5735 $ip, $serv->{'port'}, $serv->{'ssl'},
5736 "POST", "/fastrpc.cgi");
5737 return &$main::remote_error_handler(
5738 "Failed to connect to $serv->{'host'} : $con")
5740 &write_http_connection($con, "Host: $serv->{'host'}\r\n");
5741 &write_http_connection($con, "User-agent: Webmin\r\n");
5742 my $auth = &encode_base64("$user:$pass");
5744 &write_http_connection($con, "Authorization: basic $auth\r\n");
5745 &write_http_connection($con, "Content-length: ",
5746 length($tostr),"\r\n");
5747 &write_http_connection($con, "\r\n");
5748 &write_http_connection($con, $tostr);
5750 # read back the response
5751 my $line = &read_http_connection($con);
5752 $line =~ tr/\r\n//d;
5753 if ($line =~ /^HTTP\/1\..\s+401\s+/) {
5754 return &$main::remote_error_handler("Login to RPC server as $user rejected");
5756 $line =~ /^HTTP\/1\..\s+200\s+/ ||
5757 return &$main::remote_error_handler("HTTP error : $line");
5759 $line = &read_http_connection($con);
5760 $line =~ tr/\r\n//d;
5762 $line = &read_http_connection($con);
5763 if ($line =~ /^0\s+(.*)/) {
5764 return &$main::remote_error_handler("RPC error : $1");
5766 elsif ($line =~ /^1\s+(\S+)\s+(\S+)\s+(\S+)/ ||
5767 $line =~ /^1\s+(\S+)\s+(\S+)/) {
5768 # Started ok .. connect and save SID
5769 &close_http_connection($con);
5770 my ($port, $sid, $version, $error) = ($1, $2, $3);
5771 &open_socket($ip, $port, $sid, \$error);
5772 return &$main::remote_error_handler("Failed to connect to fastrpc.cgi : $error")
5774 $fast_fh_cache{$sn} = $sid;
5775 $remote_server_version{$sn} = $version;
5778 while($stuff = &read_http_connection($con)) {
5781 return &$main::remote_error_handler("Bad response from fastrpc.cgi : $line");
5784 elsif (!$fast_fh_cache{$sn}) {
5785 # Open the connection by running fastrpc.cgi locally
5786 pipe(RPCOUTr, RPCOUTw);
5790 open(STDOUT, ">&RPCOUTw");
5794 $ENV{'REQUEST_METHOD'} = 'GET';
5795 $ENV{'SCRIPT_NAME'} = '/fastrpc.cgi';
5796 $ENV{'SERVER_ROOT'} ||= $root_directory;
5798 if ($base_remote_user ne 'root' &&
5799 $base_remote_user ne 'admin') {
5800 # Need to fake up a login for the CGI!
5801 &read_acl(undef, \%acl);
5802 $ENV{'BASE_REMOTE_USER'} =
5803 $ENV{'REMOTE_USER'} =
5804 $acl{'root'} ? 'root' : 'admin';
5806 delete($ENV{'FOREIGN_MODULE_NAME'});
5807 delete($ENV{'FOREIGN_ROOT_DIRECTORY'});
5808 chdir($root_directory);
5809 if (!exec("$root_directory/fastrpc.cgi")) {
5810 print "exec failed : $!\n";
5817 ($line = <RPCOUTr>) =~ tr/\r\n//d;
5821 if ($line =~ /^0\s+(.*)/) {
5822 return &$main::remote_error_handler("RPC error : $2");
5824 elsif ($line =~ /^1\s+(\S+)\s+(\S+)/) {
5825 # Started ok .. connect and save SID
5827 my ($port, $sid, $error) = ($1, $2, undef);
5828 &open_socket("localhost", $port, $sid, \$error);
5829 return &$main::remote_error_handler("Failed to connect to fastrpc.cgi : $error") if ($error);
5830 $fast_fh_cache{$sn} = $sid;
5837 &error("Bad response from fastrpc.cgi : $line");
5840 # Got a connection .. send off the request
5841 my $fh = $fast_fh_cache{$sn};
5842 my $tostr = &serialise_variable($_[1]);
5843 print $fh length($tostr)," $fh\n";
5845 my $rlen = int(<$fh>);
5846 my ($fromstr, $got);
5847 while(length($fromstr) < $rlen) {
5848 return &$main::remote_error_handler("Failed to read from fastrpc.cgi")
5849 if (read($fh, $got, $rlen - length($fromstr)) <= 0);
5852 my $from = &unserialise_variable($fromstr);
5854 return &$main::remote_error_handler("Remote Webmin error");
5856 if (defined($from->{'arv'})) {
5857 return @{$from->{'arv'}};
5860 return $from->{'rv'};
5864 # Call rpc.cgi on remote server
5865 my $tostr = &serialise_variable($_[1]);
5867 my $con = &make_http_connection($ip, $serv->{'port'},
5868 $serv->{'ssl'}, "POST", "/rpc.cgi");
5869 return &$main::remote_error_handler("Failed to connect to $serv->{'host'} : $con") if (!ref($con));
5871 &write_http_connection($con, "Host: $serv->{'host'}\r\n");
5872 &write_http_connection($con, "User-agent: Webmin\r\n");
5873 my $auth = &encode_base64("$user:$pass");
5875 &write_http_connection($con, "Authorization: basic $auth\r\n");
5876 &write_http_connection($con, "Content-length: ",length($tostr),"\r\n");
5877 &write_http_connection($con, "\r\n");
5878 &write_http_connection($con, $tostr);
5880 # read back the response
5881 my $line = &read_http_connection($con);
5882 $line =~ tr/\r\n//d;
5883 if ($line =~ /^HTTP\/1\..\s+401\s+/) {
5884 return &$main::remote_error_handler("Login to RPC server as $user rejected");
5886 $line =~ /^HTTP\/1\..\s+200\s+/ || return &$main::remote_error_handler("RPC HTTP error : $line");
5888 $line = &read_http_connection($con);
5889 $line =~ tr/\r\n//d;
5892 while($line = &read_http_connection($con)) {
5896 my $from = &unserialise_variable($fromstr);
5897 return &$main::remote_error_handler("Invalid RPC login to $serv->{'host'}") if (!$from->{'status'});
5898 if (defined($from->{'arv'})) {
5899 return @{$from->{'arv'}};
5902 return $from->{'rv'};
5907 =head2 remote_multi_callback(&servers, parallel, &function, arg|&args, &returns, &errors, [module, library])
5909 Executes some function in parallel on multiple servers at once. Fills in
5910 the returns and errors arrays respectively. If the module and library
5911 parameters are given, that module is remotely required on the server first,
5912 to check if it is connectable. The parameters are :
5914 =item servers - A list of Webmin system hash references.
5916 =item parallel - Number of parallel operations to perform.
5918 =item function - Reference to function to call for each system.
5920 =item args - Additional parameters to the function.
5922 =item returns - Array ref to place return values into, in same order as servers.
5924 =item errors - Array ref to place error messages into.
5926 =item module - Optional module to require on the remote system first.
5928 =item library - Optional library to require in the module.
5931 sub remote_multi_callback
5933 my ($servs, $parallel, $func, $args, $rets, $errs, $mod, $lib) = @_;
5934 &remote_error_setup(\&remote_multi_callback_error);
5936 # Call the functions
5938 foreach my $g (@$servs) {
5944 $remote_multi_callback_err = undef;
5946 # Require the remote lib
5947 &remote_foreign_require($g->{'host'}, $mod, $lib);
5948 if ($remote_multi_callback_err) {
5949 # Failed .. return error
5950 print $wh &serialise_variable(
5951 [ undef, $remote_multi_callback_err ]);
5957 my $a = ref($args) ? $args->[$p] : $args;
5958 my $rv = &$func($g, $a);
5961 print $wh &serialise_variable(
5962 [ $rv, $remote_multi_callback_err ]);
5970 # Read back the results
5972 foreach my $g (@$servs) {
5976 $errs->[$p] = "Failed to read response from $g->{'host'}";
5979 my $rv = &unserialise_variable($line);
5981 $rets->[$p] = $rv->[0];
5982 $errs->[$p] = $rv->[1];
5987 &remote_error_setup(undef);
5990 sub remote_multi_callback_error
5992 $remote_multi_callback_err = $_[0];
5995 =head2 serialise_variable(variable)
5997 Converts some variable (maybe a scalar, hash ref, array ref or scalar ref)
5998 into a url-encoded string. In the cases of arrays and hashes, it is recursively
5999 called on each member to serialize the entire object.
6002 sub serialise_variable
6004 if (!defined($_[0])) {
6010 $rv = &urlize($_[0]);
6012 elsif ($r eq 'SCALAR') {
6013 $rv = &urlize(${$_[0]});
6015 elsif ($r eq 'ARRAY') {
6016 $rv = join(",", map { &urlize(&serialise_variable($_)) } @{$_[0]});
6018 elsif ($r eq 'HASH') {
6019 $rv = join(",", map { &urlize(&serialise_variable($_)).",".
6020 &urlize(&serialise_variable($_[0]->{$_})) }
6023 elsif ($r eq 'REF') {
6024 $rv = &serialise_variable(${$_[0]});
6026 elsif ($r eq 'CODE') {
6031 # An object - treat as a hash
6032 $r = "OBJECT ".&urlize($r);
6033 $rv = join(",", map { &urlize(&serialise_variable($_)).",".
6034 &urlize(&serialise_variable($_[0]->{$_})) }
6037 return ($r ? $r : 'VAL').",".$rv;
6040 =head2 unserialise_variable(string)
6042 Converts a string created by serialise_variable() back into the original
6043 scalar, hash ref, array ref or scalar ref. If the original variable was a Perl
6044 object, the same class is used on this system, if available.
6047 sub unserialise_variable
6049 my @v = split(/,/, $_[0]);
6051 if ($v[0] eq 'VAL') {
6052 @v = split(/,/, $_[0], -1);
6053 $rv = &un_urlize($v[1]);
6055 elsif ($v[0] eq 'SCALAR') {
6056 local $r = &un_urlize($v[1]);
6059 elsif ($v[0] eq 'ARRAY') {
6061 for(my $i=1; $i<@v; $i++) {
6062 push(@$rv, &unserialise_variable(&un_urlize($v[$i])));
6065 elsif ($v[0] eq 'HASH') {
6067 for(my $i=1; $i<@v; $i+=2) {
6068 $rv->{&unserialise_variable(&un_urlize($v[$i]))} =
6069 &unserialise_variable(&un_urlize($v[$i+1]));
6072 elsif ($v[0] eq 'REF') {
6073 local $r = &unserialise_variable($v[1]);
6076 elsif ($v[0] eq 'UNDEF') {
6079 elsif ($v[0] =~ /^OBJECT\s+(.*)$/) {
6080 # An object hash that we have to re-bless
6083 for(my $i=1; $i<@v; $i+=2) {
6084 $rv->{&unserialise_variable(&un_urlize($v[$i]))} =
6085 &unserialise_variable(&un_urlize($v[$i+1]));
6093 =head2 other_groups(user)
6095 Returns a list of secondary groups a user is a member of, as a list of
6104 while(my @g = getgrent()) {
6105 my @m = split(/\s+/, $g[3]);
6106 push(@rv, $g[2]) if (&indexof($user, @m) >= 0);
6108 endgrent() if ($gconfig{'os_type'} ne 'hpux');
6112 =head2 date_chooser_button(dayfield, monthfield, yearfield)
6114 Returns HTML for a button that pops up a data chooser window. The parameters
6117 =item dayfield - Name of the text field to place the day of the month into.
6119 =item monthfield - Name of the select field to select the month of the year in, indexed from 1.
6121 =item yearfield - Name of the text field to place the year into.
6124 sub date_chooser_button
6126 return &theme_date_chooser_button(@_)
6127 if (defined(&theme_date_chooser_button));
6128 my ($w, $h) = (250, 225);
6129 if ($gconfig{'db_sizedate'}) {
6130 ($w, $h) = split(/x/, $gconfig{'db_sizedate'});
6132 return "<input type=button onClick='window.dfield = form.$_[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";
6135 =head2 help_file(module, file)
6137 Returns the path to a module's help file of some name, typically under the
6138 help directory with a .html extension.
6143 my $mdir = &module_root_directory($_[0]);
6144 my $dir = "$mdir/help";
6145 foreach my $o (@lang_order_list) {
6146 my $lang = "$dir/$_[1].$o.html";
6147 return $lang if (-r $lang);
6149 return "$dir/$_[1].html";
6154 Seeds the random number generator, if not already done in this script. On Linux
6155 this makes use of the current time, process ID and a read from /dev/urandom.
6156 On other systems, only the current time and process ID are used.
6161 if (!$main::done_seed_random) {
6162 if (open(RANDOM, "/dev/urandom")) {
6164 read(RANDOM, $buf, 4);
6166 srand(time() ^ $$ ^ $buf);
6171 $main::done_seed_random = 1;
6175 =head2 disk_usage_kb(directory)
6177 Returns the number of kB used by some directory and all subdirs. Implemented
6178 by calling the C<du -k> command.
6183 my $dir = &translate_filename($_[0]);
6185 my $ex = &execute_command("du -sk ".quotemeta($dir), undef, \$out, undef, 0, 1);
6187 &execute_command("du -s ".quotemeta($dir), undef, \$out, undef, 0, 1);
6189 return $out =~ /^([0-9]+)/ ? $1 : "???";
6192 =head2 recursive_disk_usage(directory, [skip-regexp], [only-regexp])
6194 Returns the number of bytes taken up by all files in some directory and all
6195 sub-directories, by summing up their lengths. The disk_usage_kb is more
6196 reflective of reality, as the filesystem typically pads file sizes to 1k or
6200 sub recursive_disk_usage
6202 my $dir = &translate_filename($_[0]);
6209 my @st = stat($dir);
6215 my @files = readdir(DIR);
6217 foreach my $f (@files) {
6218 next if ($f eq "." || $f eq "..");
6219 next if ($skip && $f =~ /$skip/);
6220 next if ($only && $f !~ /$only/);
6221 $rv += &recursive_disk_usage("$dir/$f", $skip, $only);
6227 =head2 help_search_link(term, [ section, ... ] )
6229 Returns HTML for a link to the man module for searching local and online
6230 docs for various search terms. The term parameter can either be a single
6231 word like 'bind', or a space-separated list of words. This function is typically
6232 used by modules that want to refer users to additional documentation in man
6233 pages or local system doc files.
6236 sub help_search_link
6238 if (&foreign_available("man") && !$tconfig{'nosearch'}) {
6239 my $for = &urlize(shift(@_));
6240 return "<a href='$gconfig{'webprefix'}/man/search.cgi?".
6241 join("&", map { "section=$_" } @_)."&".
6242 "for=$for&exact=1&check=".&get_module_name()."'>".
6243 $text{'helpsearch'}."</a>\n";
6250 =head2 make_http_connection(host, port, ssl, method, page, [&headers])
6252 Opens a connection to some HTTP server, maybe through a proxy, and returns
6253 a handle object. The handle can then be used to send additional headers
6254 and read back a response. If anything goes wrong, returns an error string.
6255 The parameters are :
6257 =item host - Hostname or IP address of the webserver to connect to.
6259 =item port - HTTP port number to connect to.
6261 =item ssl - Set to 1 to connect in SSL mode.
6263 =item method - HTTP method, like GET or POST.
6265 =item page - Page to request on the webserver, like /foo/index.html
6267 =item headers - Array ref of additional HTTP headers, each of which is a 2-element array ref.
6270 sub make_http_connection
6272 my ($host, $port, $ssl, $method, $page, $headers) = @_;
6275 foreach my $h (@$headers) {
6276 $htxt .= $h->[0].": ".$h->[1]."\r\n";
6280 if (&is_readonly_mode()) {
6281 return "HTTP connections not allowed in readonly mode";
6283 my $rv = { 'fh' => time().$$ };
6286 eval "use Net::SSLeay";
6287 $@ && return $text{'link_essl'};
6288 eval "Net::SSLeay::SSLeay_add_ssl_algorithms()";
6289 eval "Net::SSLeay::load_error_strings()";
6290 $rv->{'ssl_ctx'} = Net::SSLeay::CTX_new() ||
6291 return "Failed to create SSL context";
6292 $rv->{'ssl_con'} = Net::SSLeay::new($rv->{'ssl_ctx'}) ||
6293 return "Failed to create SSL connection";
6295 if ($gconfig{'http_proxy'} =~ /^http:\/\/(\S+):(\d+)/ &&
6296 !&no_proxy($host)) {
6299 &open_socket($1, $2, $rv->{'fh'}, \$error);
6302 my $fh = $rv->{'fh'};
6303 print $fh "CONNECT $host:$port HTTP/1.0\r\n";
6304 if ($gconfig{'proxy_user'}) {
6305 my $auth = &encode_base64(
6306 "$gconfig{'proxy_user'}:".
6307 "$gconfig{'proxy_pass'}");
6308 $auth =~ tr/\r\n//d;
6309 print $fh "Proxy-Authorization: Basic $auth\r\n";
6313 if ($line =~ /^HTTP(\S+)\s+(\d+)\s+(.*)/) {
6314 return "Proxy error : $3" if ($2 != 200);
6317 return "Proxy error : $line";
6322 elsif (!$gconfig{'proxy_fallback'}) {
6323 # Connection to proxy failed - give up
6330 &open_socket($host, $port, $rv->{'fh'}, \$error);
6331 return $error if ($error);
6333 Net::SSLeay::set_fd($rv->{'ssl_con'}, fileno($rv->{'fh'}));
6334 Net::SSLeay::connect($rv->{'ssl_con'}) ||
6335 return "SSL connect() failed";
6336 my $rtxt = "$method $page HTTP/1.0\r\n".$htxt;
6337 Net::SSLeay::write($rv->{'ssl_con'}, $rtxt);
6340 # Plain HTTP request
6342 if ($gconfig{'http_proxy'} =~ /^http:\/\/(\S+):(\d+)/ &&
6343 !&no_proxy($host)) {
6346 &open_socket($1, $2, $rv->{'fh'}, \$error);
6350 my $fh = $rv->{'fh'};
6351 my $rtxt = $method." ".
6352 "http://$host:$port$page HTTP/1.0\r\n";
6353 if ($gconfig{'proxy_user'}) {
6354 my $auth = &encode_base64(
6355 "$gconfig{'proxy_user'}:".
6356 "$gconfig{'proxy_pass'}");
6357 $auth =~ tr/\r\n//d;
6358 $rtxt .= "Proxy-Authorization: Basic $auth\r\n";
6363 elsif (!$gconfig{'proxy_fallback'}) {
6368 # Connecting directly
6370 &open_socket($host, $port, $rv->{'fh'}, \$error);
6371 return $error if ($error);
6372 my $fh = $rv->{'fh'};
6373 my $rtxt = "$method $page HTTP/1.0\r\n".$htxt;
6380 =head2 read_http_connection(&handle, [bytes])
6382 Reads either one line or up to the specified number of bytes from the handle,
6383 originally supplied by make_http_connection.
6386 sub read_http_connection
6390 if ($h->{'ssl_con'}) {
6393 while(($idx = index($h->{'buffer'}, "\n")) < 0) {
6394 # need to read more..
6395 if (!($more = Net::SSLeay::read($h->{'ssl_con'}))) {
6397 $rv = $h->{'buffer'};
6398 delete($h->{'buffer'});
6401 $h->{'buffer'} .= $more;
6403 $rv = substr($h->{'buffer'}, 0, $idx+1);
6404 $h->{'buffer'} = substr($h->{'buffer'}, $idx+1);
6407 if (length($h->{'buffer'})) {
6408 $rv = $h->{'buffer'};
6409 delete($h->{'buffer'});
6412 $rv = Net::SSLeay::read($h->{'ssl_con'}, $_[1]);
6418 read($h->{'fh'}, $rv, $_[1]) > 0 || return undef;
6421 my $fh = $h->{'fh'};
6425 $rv = undef if ($rv eq "");
6429 =head2 write_http_connection(&handle, [data+])
6431 Writes the given data to the given HTTP connection handle.
6434 sub write_http_connection
6437 my $fh = $h->{'fh'};
6439 if ($h->{'ssl_ctx'}) {
6440 foreach my $s (@_) {
6441 my $ok = Net::SSLeay::write($h->{'ssl_con'}, $s);
6442 $allok = 0 if (!$ok);
6446 my $ok = (print $fh @_);
6447 $allok = 0 if (!$ok);
6452 =head2 close_http_connection(&handle)
6454 Closes a connection to an HTTP server, identified by the given handle.
6457 sub close_http_connection
6463 =head2 clean_environment
6465 Deletes any environment variables inherited from miniserv so that they
6466 won't be passed to programs started by webmin. This is useful when calling
6467 programs that check for CGI-related environment variables and modify their
6468 behaviour, and to avoid passing sensitive variables to un-trusted programs.
6471 sub clean_environment
6473 %UNCLEAN_ENV = %ENV;
6474 foreach my $k (keys %ENV) {
6475 if ($k =~ /^(HTTP|VIRTUALSERVER|QUOTA|USERADMIN)_/) {
6479 foreach my $e ('WEBMIN_CONFIG', 'SERVER_NAME', 'CONTENT_TYPE', 'REQUEST_URI',
6480 'PATH_INFO', 'WEBMIN_VAR', 'REQUEST_METHOD', 'GATEWAY_INTERFACE',
6481 'QUERY_STRING', 'REMOTE_USER', 'SERVER_SOFTWARE', 'SERVER_PROTOCOL',
6482 'REMOTE_HOST', 'SERVER_PORT', 'DOCUMENT_ROOT', 'SERVER_ROOT',
6483 'MINISERV_CONFIG', 'SCRIPT_NAME', 'SERVER_ADMIN', 'CONTENT_LENGTH',
6484 'HTTPS', 'FOREIGN_MODULE_NAME', 'FOREIGN_ROOT_DIRECTORY',
6485 'SCRIPT_FILENAME', 'PATH_TRANSLATED', 'BASE_REMOTE_USER',
6486 'DOCUMENT_REALROOT', 'MINISERV_CONFIG', 'MYSQL_PWD',
6492 =head2 reset_environment
6494 Puts the environment back how it was before clean_environment was callled.
6497 sub reset_environment
6500 foreach my $k (keys %UNCLEAN_ENV) {
6501 $ENV{$k} = $UNCLEAN_ENV{$k};
6503 undef(%UNCLEAN_ENV);
6507 =head2 progress_callback
6509 Never called directly, but useful for passing to &http_download to print
6510 out progress of an HTTP request.
6513 sub progress_callback
6515 if (defined(&theme_progress_callback)) {
6516 # Call the theme override
6517 return &theme_progress_callback(@_);
6521 print $progress_callback_prefix;
6523 $progress_size = $_[1];
6524 $progress_step = int($_[1] / 10);
6525 print &text('progress_size2', $progress_callback_url,
6526 &nice_size($progress_size)),"<br>\n";
6529 print &text('progress_nosize', $progress_callback_url),"<br>\n";
6531 $last_progress_time = $last_progress_size = undef;
6533 elsif ($_[0] == 3) {
6535 my $sp = $progress_callback_prefix.(" " x 5);
6536 if ($progress_size) {
6537 # And we have a size to compare against
6538 my $st = int(($_[1] * 10) / $progress_size);
6539 my $time_now = time();
6540 if ($st != $progress_step ||
6541 $time_now - $last_progress_time > 60) {
6542 # Show progress every 10% or 60 seconds
6543 print $sp,&text('progress_datan', &nice_size($_[1]),
6544 int($_[1]*100/$progress_size)),"<br>\n";
6545 $last_progress_time = $time_now;
6547 $progress_step = $st;
6550 # No total size .. so only show in 100k jumps
6551 if ($_[1] > $last_progress_size+100*1024) {
6552 print $sp,&text('progress_data2n',
6553 &nice_size($_[1])),"<br>\n";
6554 $last_progress_size = $_[1];
6558 elsif ($_[0] == 4) {
6559 # All done downloading
6560 print $progress_callback_prefix,&text('progress_done'),"<br>\n";
6562 elsif ($_[0] == 5) {
6563 # Got new location after redirect
6564 $progress_callback_url = $_[1];
6566 elsif ($_[0] == 6) {
6568 $progress_callback_url = $_[1];
6569 print &text('progress_incache', $progress_callback_url),"<br>\n";
6573 =head2 switch_to_remote_user
6575 Changes the user and group of the current process to that of the unix user
6576 with the same name as the current webmin login, or fails if there is none.
6577 This should be called by Usermin module scripts that only need to run with
6578 limited permissions.
6581 sub switch_to_remote_user
6583 @remote_user_info = $remote_user ? getpwnam($remote_user) :
6585 @remote_user_info || &error(&text('switch_remote_euser', $remote_user));
6586 &create_missing_homedir(\@remote_user_info);
6588 &switch_to_unix_user(\@remote_user_info);
6589 $ENV{'USER'} = $ENV{'LOGNAME'} = $remote_user;
6590 $ENV{'HOME'} = $remote_user_info[7];
6592 # Export global variables to caller
6593 if ($main::export_to_caller) {
6594 my ($callpkg) = caller();
6595 eval "\@${callpkg}::remote_user_info = \@remote_user_info";
6599 =head2 switch_to_unix_user(&user-details)
6601 Switches the current process to the UID and group ID from the given list
6602 of user details, which must be in the format returned by getpwnam.
6605 sub switch_to_unix_user
6608 if (!defined($uinfo->[0])) {
6609 # No username given, so just use given GID
6610 ($(, $)) = ( $uinfo->[3], "$uinfo->[3] $uinfo->[3]" );
6613 # Use all groups from user
6614 ($(, $)) = ( $uinfo->[3],
6615 "$uinfo->[3] ".join(" ", $uinfo->[3],
6616 &other_groups($uinfo->[0])) );
6619 POSIX::setuid($uinfo->[2]);
6621 if ($< != $uinfo->[2] || $> != $uinfo->[2]) {
6622 ($>, $<) = ( $uinfo->[2], $uinfo->[2] );
6626 =head2 eval_as_unix_user(username, &code)
6628 Runs some code fragment with the effective UID and GID switch to that
6629 of the given Unix user, so that file IO takes place with his permissions.
6633 sub eval_as_unix_user
6635 my ($user, $code) = @_;
6636 my @uinfo = getpwnam($user);
6637 if (!scalar(@uinfo)) {
6638 &error("eval_as_unix_user called with invalid user $user");
6640 $) = $uinfo[3]." ".join(" ", $uinfo[3], &other_groups($user));
6644 local $main::error_must_die = 1;
6651 $err =~ s/\s+at\s+(\/\S+)\s+line\s+(\d+)\.?//;
6654 return wantarray ? @rv : $rv[0];
6657 =head2 create_user_config_dirs
6659 Creates per-user config directories and sets $user_config_directory and
6660 $user_module_config_directory to them. Also reads per-user module configs
6661 into %userconfig. This should be called by Usermin module scripts that need
6662 to store per-user preferences or other settings.
6665 sub create_user_config_dirs
6667 return if (!$gconfig{'userconfig'});
6668 my @uinfo = @remote_user_info ? @remote_user_info : getpwnam($remote_user);
6669 return if (!@uinfo || !$uinfo[7]);
6670 &create_missing_homedir(\@uinfo);
6671 $user_config_directory = "$uinfo[7]/$gconfig{'userconfig'}";
6672 if (!-d $user_config_directory) {
6673 mkdir($user_config_directory, 0700) ||
6674 &error("Failed to create $user_config_directory : $!");
6675 if ($< == 0 && $uinfo[2]) {
6676 chown($uinfo[2], $uinfo[3], $user_config_directory);
6679 if (&get_module_name()) {
6680 $user_module_config_directory = $user_config_directory."/".
6682 if (!-d $user_module_config_directory) {
6683 mkdir($user_module_config_directory, 0700) ||
6684 &error("Failed to create $user_module_config_directory : $!");
6685 if ($< == 0 && $uinfo[2]) {
6686 chown($uinfo[2], $uinfo[3], $user_config_directory);
6690 &read_file_cached("$module_root_directory/defaultuconfig",
6692 &read_file_cached("$module_config_directory/uconfig", \%userconfig);
6693 &read_file_cached("$user_module_config_directory/config",
6697 # Export global variables to caller
6698 if ($main::export_to_caller) {
6699 my ($callpkg) = caller();
6700 foreach my $v ('$user_config_directory',
6701 '$user_module_config_directory', '%userconfig') {
6702 my ($vt, $vn) = split('', $v, 2);
6703 eval "${vt}${callpkg}::${vn} = ${vt}${vn}";
6708 =head2 create_missing_homedir(&uinfo)
6710 If auto homedir creation is enabled, create one for this user if needed.
6711 For internal use only.
6714 sub create_missing_homedir
6717 if (!-e $uinfo->[7] && $gconfig{'create_homedir'}) {
6718 # Use has no home dir .. make one
6719 system("mkdir -p ".quotemeta($uinfo->[7]));
6720 chown($uinfo->[2], $uinfo->[3], $uinfo->[7]);
6721 if ($gconfig{'create_homedir_perms'} ne '') {
6722 chmod(oct($gconfig{'create_homedir_perms'}), $uinfo->[7]);
6727 =head2 filter_javascript(text)
6729 Disables all javascript <script>, onClick= and so on tags in the given HTML,
6730 and returns the new HTML. Useful for displaying HTML from an un-trusted source.
6733 sub filter_javascript
6736 $rv =~ s/<\s*script[^>]*>([\000-\377]*?)<\s*\/script\s*>//gi;
6737 $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;
6738 $rv =~ s/(javascript:)/x$1/gi;
6739 $rv =~ s/(vbscript:)/x$1/gi;
6743 =head2 resolve_links(path)
6745 Given a path that may contain symbolic links, returns the real path.
6751 $path =~ s/\/+/\//g;
6752 $path =~ s/\/$// if ($path ne "/");
6753 my @p = split(/\/+/, $path);
6755 for(my $i=0; $i<@p; $i++) {
6756 my $sofar = "/".join("/", @p[0..$i]);
6757 my $lnk = readlink($sofar);
6758 if ($lnk eq $sofar) {
6759 # Link to itself! Cannot do anything more really ..
6762 elsif ($lnk =~ /^\//) {
6763 # Link is absolute..
6764 return &resolve_links($lnk."/".join("/", @p[$i+1 .. $#p]));
6768 return &resolve_links("/".join("/", @p[0..$i-1])."/".$lnk."/".join("/", @p[$i+1 .. $#p]));
6774 =head2 simplify_path(path, bogus)
6776 Given a path, maybe containing elements ".." and "." , convert it to a
6777 clean, absolute form. Returns undef if this is not possible.
6785 my @bits = split(/\/+/, $dir);
6788 foreach my $b (@bits) {
6792 elsif ($b eq "..") {
6794 if (scalar(@fixedbits) == 0) {
6795 # Cannot! Already at root!
6802 push(@fixedbits, $b);
6805 return "/".join('/', @fixedbits);
6808 =head2 same_file(file1, file2)
6810 Returns 1 if two files are actually the same
6815 return 1 if ($_[0] eq $_[1]);
6816 return 0 if ($_[0] !~ /^\// || $_[1] !~ /^\//);
6817 my @stat1 = $stat_cache{$_[0]} ? @{$stat_cache{$_[0]}}
6818 : (@{$stat_cache{$_[0]}} = stat($_[0]));
6819 my @stat2 = $stat_cache{$_[1]} ? @{$stat_cache{$_[1]}}
6820 : (@{$stat_cache{$_[1]}} = stat($_[1]));
6821 return 0 if (!@stat1 || !@stat2);
6822 return $stat1[0] == $stat2[0] && $stat1[1] == $stat2[1];
6825 =head2 flush_webmin_caches
6827 Clears all in-memory and on-disk caches used by Webmin.
6830 sub flush_webmin_caches
6832 undef(%main::read_file_cache);
6833 undef(%main::acl_hash_cache);
6834 undef(%main::acl_array_cache);
6835 undef(%main::has_command_cache);
6836 undef(@main::list_languages_cache);
6837 undef($main::got_list_usermods_cache);
6838 undef(@main::list_usermods_cache);
6839 undef(%main::foreign_installed_cache);
6840 unlink("$config_directory/module.infos.cache");
6841 &get_all_module_infos();
6844 =head2 list_usermods
6846 Returns a list of additional module restrictions. For internal use in
6852 if (!$main::got_list_usermods_cache) {
6853 @main::list_usermods_cache = ( );
6855 open(USERMODS, "$config_directory/usermin.mods");
6857 if (/^([^:]+):(\+|-|):(.*)/) {
6858 push(@main::list_usermods_cache,
6859 [ $1, $2, [ split(/\s+/, $3) ] ]);
6863 $main::got_list_usermods_cache = 1;
6865 return @main::list_usermods_cache;
6868 =head2 available_usermods(&allmods, &usermods)
6870 Returns a list of modules that are available to the given user, based
6871 on usermod additional/subtractions. For internal use by Usermin only.
6874 sub available_usermods
6876 return @{$_[0]} if (!@{$_[1]});
6878 my %mods = map { $_->{'dir'}, 1 } @{$_[0]};
6879 my @uinfo = @remote_user_info;
6880 @uinfo = getpwnam($remote_user) if (!@uinfo);
6881 foreach my $u (@{$_[1]}) {
6883 if ($u->[0] eq "*" || $u->[0] eq $remote_user) {
6886 elsif ($u->[0] =~ /^\@(.*)$/) {
6887 # Check for group membership
6888 my @ginfo = getgrnam($1);
6889 $applies++ if (@ginfo && ($ginfo[2] == $uinfo[3] ||
6890 &indexof($remote_user, split(/\s+/, $ginfo[3])) >= 0));
6892 elsif ($u->[0] =~ /^\//) {
6893 # Check users and groups in file
6895 open(USERFILE, $u->[0]);
6898 if ($_ eq $remote_user) {
6901 elsif (/^\@(.*)$/) {
6902 my @ginfo = getgrnam($1);
6904 if (@ginfo && ($ginfo[2] == $uinfo[3] ||
6905 &indexof($remote_user,
6906 split(/\s+/, $ginfo[3])) >= 0));
6913 if ($u->[1] eq "+") {
6914 map { $mods{$_}++ } @{$u->[2]};
6916 elsif ($u->[1] eq "-") {
6917 map { delete($mods{$_}) } @{$u->[2]};
6921 map { $mods{$_}++ } @{$u->[2]};
6925 return grep { $mods{$_->{'dir'}} } @{$_[0]};
6928 =head2 get_available_module_infos(nocache)
6930 Returns a list of modules available to the current user, based on
6931 operating system support, access control and usermod restrictions. Useful
6932 in themes that need to display a list of modules the user can use.
6933 Each element of the returned array is a hash reference in the same format as
6934 returned by get_module_info.
6937 sub get_available_module_infos
6940 &read_acl(\%acl, \%uacl);
6941 my $risk = $gconfig{'risk_'.$base_remote_user};
6943 foreach my $minfo (&get_all_module_infos($_[0])) {
6944 next if (!&check_os_support($minfo));
6946 # Check module risk level
6947 next if ($risk ne 'high' && $minfo->{'risk'} &&
6948 $minfo->{'risk'} !~ /$risk/);
6952 next if (!$acl{$base_remote_user,$minfo->{'dir'}} &&
6953 !$acl{$base_remote_user,"*"});
6955 next if (&is_readonly_mode() && !$minfo->{'readonly'});
6959 # Check usermod restrictions
6960 my @usermods = &list_usermods();
6961 @rv = sort { $a->{'desc'} cmp $b->{'desc'} }
6962 &available_usermods(\@rv, \@usermods);
6964 # Check RBAC restrictions
6966 foreach my $m (@rv) {
6967 if (&supports_rbac($m->{'dir'}) &&
6968 &use_rbac_module_acl(undef, $m->{'dir'})) {
6969 local $rbacs = &get_rbac_module_acl($remote_user,
6977 # Module or system doesn't support RBAC
6978 push(@rbacrv, $m) if (!$gconfig{'rbacdeny_'.$base_remote_user});
6984 if (defined(&theme_foreign_available)) {
6985 foreach my $m (@rbacrv) {
6986 if (&theme_foreign_available($m->{'dir'})) {
6995 # Check licence module vetos
6997 if ($main::licence_module) {
6998 foreach my $m (@themerv) {
6999 if (&foreign_call($main::licence_module,
7000 "check_module_licence", $m->{'dir'})) {
7012 =head2 get_visible_module_infos(nocache)
7014 Like get_available_module_infos, but excludes hidden modules from the list.
7015 Each element of the returned array is a hash reference in the same format as
7016 returned by get_module_info.
7019 sub get_visible_module_infos
7022 my $pn = &get_product_name();
7023 return grep { !$_->{'hidden'} &&
7024 !$_->{$pn.'_hidden'} } &get_available_module_infos($nocache);
7027 =head2 get_visible_modules_categories(nocache)
7029 Returns a list of Webmin module categories, each of which is a hash ref
7030 with 'code', 'desc' and 'modules' keys. The modules value is an array ref
7031 of modules in the category, in the format returned by get_module_info.
7032 Un-used modules are automatically assigned to the 'unused' category, and
7033 those with no category are put into 'others'.
7036 sub get_visible_modules_categories
7039 my @mods = &get_visible_module_infos($nocache);
7041 if (&get_product_name() eq 'webmin') {
7042 @unmods = grep { $_->{'installed'} eq '0' } @mods;
7043 @mods = grep { $_->{'installed'} ne '0' } @mods;
7045 my %cats = &list_categories(\@mods);
7047 foreach my $c (keys %cats) {
7048 my $cat = { 'code' => $c || 'other',
7049 'desc' => $cats{$c} };
7050 $cat->{'modules'} = [ grep { $_->{'category'} eq $c } @mods ];
7053 @rv = sort { ($b->{'code'} eq "others" ? "" : $b->{'code'}) cmp
7054 ($a->{'code'} eq "others" ? "" : $a->{'code'}) } @rv;
7056 # Add un-installed modules in magic category
7057 my $cat = { 'code' => 'unused',
7058 'desc' => $text{'main_unused'},
7060 'modules' => \@unmods };
7066 =head2 is_under_directory(directory, file)
7068 Returns 1 if the given file is under the specified directory, 0 if not.
7069 Symlinks are taken into account in the file to find it's 'real' location.
7072 sub is_under_directory
7074 my ($dir, $file) = @_;
7075 return 1 if ($dir eq "/");
7076 return 0 if ($file =~ /\.\./);
7077 my $ld = &resolve_links($dir);
7079 return &is_under_directory($ld, $file);
7081 my $lp = &resolve_links($file);
7083 return &is_under_directory($dir, $lp);
7085 return 0 if (length($file) < length($dir));
7086 return 1 if ($dir eq $file);
7088 return substr($file, 0, length($dir)) eq $dir;
7091 =head2 parse_http_url(url, [basehost, baseport, basepage, basessl])
7093 Given an absolute URL, returns the host, port, page and ssl flag components.
7094 Relative URLs can also be parsed, if the base information is provided.
7099 if ($_[0] =~ /^(http|https):\/\/([^:\/]+)(:(\d+))?(\/\S*)?$/) {
7101 my $ssl = $1 eq 'https';
7102 return ($2, $3 ? $4 : $ssl ? 443 : 80, $5 || "/", $ssl);
7108 elsif ($_[0] =~ /^\/\S*$/) {
7109 # A relative to the server URL
7110 return ($_[1], $_[2], $_[0], $_[4]);
7113 # A relative to the directory URL
7115 $page =~ s/[^\/]+$//;
7116 return ($_[1], $_[2], $page.$_[0], $_[4]);
7120 =head2 check_clicks_function
7122 Returns HTML for a JavaScript function called check_clicks that returns
7123 true when first called, but false subsequently. Useful on onClick for
7124 critical buttons. Deprecated, as this method of preventing duplicate actions
7128 sub check_clicks_function
7133 function check_clicks(form)
7140 for(i=0; i<form.length; i++)
7141 form.elements[i].disabled = true;
7150 =head2 load_entities_map
7152 Returns a hash ref containing mappings between HTML entities (like ouml) and
7153 ascii values (like 246). Mainly for internal use.
7156 sub load_entities_map
7158 if (!%entities_map_cache) {
7160 open(EMAP, "$root_directory/entities_map.txt");
7162 if (/^(\d+)\s+(\S+)/) {
7163 $entities_map_cache{$2} = $1;
7168 return \%entities_map_cache;
7171 =head2 entities_to_ascii(string)
7173 Given a string containing HTML entities like ö and 7, replace them
7174 with their ASCII equivalents.
7177 sub entities_to_ascii
7180 my $emap = &load_entities_map();
7181 $str =~ s/&([a-z]+);/chr($emap->{$1})/ge;
7182 $str =~ s/&#(\d+);/chr($1)/ge;
7186 =head2 get_product_name
7188 Returns either 'webmin' or 'usermin', depending on which program the current
7189 module is in. Useful for modules that can be installed into either.
7192 sub get_product_name
7194 return $gconfig{'product'} if (defined($gconfig{'product'}));
7195 return defined($gconfig{'userconfig'}) ? 'usermin' : 'webmin';
7200 Returns the character set for the current language, such as iso-8859-1.
7205 my $charset = defined($gconfig{'charset'}) ? $gconfig{'charset'} :
7206 $current_lang_info->{'charset'} ?
7207 $current_lang_info->{'charset'} : $default_charset;
7211 =head2 get_display_hostname
7213 Returns the system's hostname for UI display purposes. This may be different
7214 from the actual hostname if you administrator has configured it so in the
7215 Webmin Configuration module.
7218 sub get_display_hostname
7220 if ($gconfig{'hostnamemode'} == 0) {
7221 return &get_system_hostname();
7223 elsif ($gconfig{'hostnamemode'} == 3) {
7224 return $gconfig{'hostnamedisplay'};
7227 my $h = $ENV{'HTTP_HOST'};
7229 if ($gconfig{'hostnamemode'} == 2) {
7230 $h =~ s/^(www|ftp|mail)\.//i;
7236 =head2 save_module_config([&config], [modulename])
7238 Saves the configuration for some module. The config parameter is an optional
7239 hash reference of names and values to save, which defaults to the global
7240 %config hash. The modulename parameter is the module to update the config
7241 file, which defaults to the current module.
7244 sub save_module_config
7246 my $c = $_[0] || { &get_module_variable('%config') };
7247 my $m = defined($_[1]) ? $_[1] : &get_module_name();
7248 &write_file("$config_directory/$m/config", $c);
7251 =head2 save_user_module_config([&config], [modulename])
7253 Saves the user's Usermin preferences for some module. The config parameter is
7254 an optional hash reference of names and values to save, which defaults to the
7255 global %userconfig hash. The modulename parameter is the module to update the
7256 config file, which defaults to the current module.
7259 sub save_user_module_config
7261 my $c = $_[0] || { &get_module_variable('%userconfig') };
7262 my $m = $_[1] || &get_module_name();
7263 my $ucd = $user_config_directory;
7265 my @uinfo = @remote_user_info ? @remote_user_info
7266 : getpwnam($remote_user);
7267 return if (!@uinfo || !$uinfo[7]);
7268 $ucd = "$uinfo[7]/$gconfig{'userconfig'}";
7270 &write_file("$ucd/$m/config", $c);
7273 =head2 nice_size(bytes, [min])
7275 Converts a number of bytes into a number followed by a suffix like GB, MB
7276 or kB. Rounding is to two decimal digits. The optional min parameter sets the
7277 smallest units to use - so you could pass 1024*1024 to never show bytes or kB.
7282 my ($units, $uname);
7283 if (abs($_[0]) > 1024*1024*1024*1024 || $_[1] >= 1024*1024*1024*1024) {
7284 $units = 1024*1024*1024*1024;
7287 elsif (abs($_[0]) > 1024*1024*1024 || $_[1] >= 1024*1024*1024) {
7288 $units = 1024*1024*1024;
7291 elsif (abs($_[0]) > 1024*1024 || $_[1] >= 1024*1024) {
7295 elsif (abs($_[0]) > 1024 || $_[1] >= 1024) {
7303 my $sz = sprintf("%.2f", ($_[0]*1.0 / $units));
7305 return $sz." ".$uname;
7308 =head2 get_perl_path
7310 Returns the path to Perl currently in use, such as /usr/bin/perl.
7315 if (open(PERL, "$config_directory/perl-path")) {
7321 return $^X if (-x $^X);
7322 return &has_command("perl");
7325 =head2 get_goto_module([&mods])
7327 Returns the details of a module that the current user should be re-directed
7328 to after logging in, or undef if none. Useful for themes.
7333 my @mods = $_[0] ? @{$_[0]} : &get_visible_module_infos();
7334 if ($gconfig{'gotomodule'}) {
7335 my ($goto) = grep { $_->{'dir'} eq $gconfig{'gotomodule'} } @mods;
7336 return $goto if ($goto);
7338 if (@mods == 1 && $gconfig{'gotoone'}) {
7344 =head2 select_all_link(field, form, [text])
7346 Returns HTML for a 'Select all' link that uses Javascript to select
7347 multiple checkboxes with the same name. The parameters are :
7349 =item field - Name of the checkbox inputs.
7351 =item form - Index of the form on the page.
7353 =item text - Message for the link, defaulting to 'Select all'.
7358 return &theme_select_all_link(@_) if (defined(&theme_select_all_link));
7359 my ($field, $form, $text) = @_;
7361 $text ||= $text{'ui_selall'};
7362 return "<a class='select_all' href='#' onClick='document.forms[$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>";
7365 =head2 select_invert_link(field, form, text)
7367 Returns HTML for an 'Invert selection' link that uses Javascript to invert the
7368 selection on multiple checkboxes with the same name. The parameters are :
7370 =item field - Name of the checkbox inputs.
7372 =item form - Index of the form on the page.
7374 =item text - Message for the link, defaulting to 'Invert selection'.
7377 sub select_invert_link
7379 return &theme_select_invert_link(@_) if (defined(&theme_select_invert_link));
7380 my ($field, $form, $text) = @_;
7382 $text ||= $text{'ui_selinv'};
7383 return "<a class='select_invert' href='#' onClick='document.forms[$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>";
7386 =head2 select_rows_link(field, form, text, &rows)
7388 Returns HTML for a link that uses Javascript to select rows with particular
7389 values for their checkboxes. The parameters are :
7391 =item field - Name of the checkbox inputs.
7393 =item form - Index of the form on the page.
7395 =item text - Message for the link, de
7397 =item rows - Reference to an array of 1 or 0 values, indicating which rows to check.
7400 sub select_rows_link
7402 return &theme_select_rows_link(@_) if (defined(&theme_select_rows_link));
7403 my ($field, $form, $text, $rows) = @_;
7405 my $js = "var sel = { ".join(",", map { "\""."e_escape($_)."\":1" } @$rows)." }; ";
7406 $js .= "for(var i=0; i<document.forms[$form].${field}.length; i++) { var r = document.forms[$form].${field}[i]; r.checked = sel[r.value]; } ";
7407 $js .= "return false;";
7408 return "<a href='#' onClick='$js'>$text</a>";
7411 =head2 check_pid_file(file)
7413 Given a pid file, returns the PID it contains if the process is running.
7418 open(PIDFILE, $_[0]) || return undef;
7419 my $pid = <PIDFILE>;
7421 $pid =~ /^\s*(\d+)/ || return undef;
7422 kill(0, $1) || return undef;
7428 Return the local os-specific library name to this module. For internal use only.
7433 my $mn = &get_module_name();
7434 my $md = &module_root_directory($mn);
7435 if (-r "$md/$mn-$gconfig{'os_type'}-$gconfig{'os_version'}-lib.pl") {
7436 return "$mn-$gconfig{'os_type'}-$gconfig{'os_version'}-lib.pl";
7438 elsif (-r "$md/$mn-$gconfig{'os_type'}-lib.pl") {
7439 return "$mn-$gconfig{'os_type'}-lib.pl";
7441 elsif (-r "$md/$mn-generic-lib.pl") {
7442 return "$mn-generic-lib.pl";
7449 =head2 module_root_directory(module)
7451 Given a module name, returns its root directory. On a typical Webmin install,
7452 all modules are under the same directory - but it is theoretically possible to
7456 sub module_root_directory
7458 my $d = ref($_[0]) ? $_[0]->{'dir'} : $_[0];
7459 if (@root_directories > 1) {
7460 foreach my $r (@root_directories) {
7466 return "$root_directories[0]/$d";
7469 =head2 list_mime_types
7471 Returns a list of all known MIME types and their extensions, as a list of hash
7472 references with keys :
7474 =item type - The MIME type, like text/plain.
7476 =item exts - A list of extensions, like .doc and .avi.
7478 =item desc - A human-readable description for the MIME type.
7483 if (!@list_mime_types_cache) {
7485 open(MIME, "$root_directory/mime.types");
7489 if (s/#\s*(.*)$//g) {
7492 my ($type, @exts) = split(/\s+/);
7494 push(@list_mime_types_cache, { 'type' => $type,
7501 return @list_mime_types_cache;
7504 =head2 guess_mime_type(filename, [default])
7506 Given a file name like xxx.gif or foo.html, returns a guessed MIME type.
7507 The optional default parameter sets a default type of use if none is found,
7508 which defaults to application/octet-stream.
7513 if ($_[0] =~ /\.([A-Za-z0-9\-]+)$/) {
7515 foreach my $t (&list_mime_types()) {
7516 foreach my $e (@{$t->{'exts'}}) {
7517 return $t->{'type'} if (lc($e) eq lc($ext));
7521 return @_ > 1 ? $_[1] : "application/octet-stream";
7524 =head2 open_tempfile([handle], file, [no-error], [no-tempfile], [safe?])
7526 Opens a file handle for writing to a temporary file, which will only be
7527 renamed over the real file when the handle is closed. This allows critical
7528 files like /etc/shadow to be updated safely, even if writing fails part way
7529 through due to lack of disk space. The parameters are :
7531 =item handle - File handle to open, as you would use in Perl's open function.
7533 =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.
7535 =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 $! with the error code.
7537 =item no-tempfile - If set to 1, writing will be direct to the file instead of using a temporary file.
7539 =item safe - Indicates to users in read-only mode that this write is safe and non-destructive.
7545 # Just getting a temp file
7546 if (!defined($main::open_tempfiles{$_[0]})) {
7547 $_[0] =~ /^(.*)\/(.*)$/ || return $_[0];
7548 my $dir = $1 || "/";
7549 my $tmp = "$dir/$2.webmintmp.$$";
7550 $main::open_tempfiles{$_[0]} = $tmp;
7551 push(@main::temporary_files, $tmp);
7553 return $main::open_tempfiles{$_[0]};
7557 my ($fh, $file, $noerror, $notemp, $safe) = @_;
7558 $fh = &callers_package($fh);
7560 my %gaccess = &get_module_acl(undef, "");
7561 my $db = $gconfig{'debug_what_write'};
7562 if ($file =~ /\r|\n|\0/) {
7563 if ($noerror) { return 0; }
7564 else { &error("Filename contains invalid characters"); }
7566 if (&is_readonly_mode() && $file =~ />/ && !$safe) {
7567 # Read-only mode .. veto all writes
7568 print STDERR "vetoing write to $file\n";
7569 return open($fh, ">$null_file");
7571 elsif ($file =~ /^(>|>>|)nul$/i) {
7572 # Write to Windows null device
7573 &webmin_debug_log($1 eq ">" ? "WRITE" :
7574 $1 eq ">>" ? "APPEND" : "READ", "nul") if ($db);
7576 elsif ($file =~ /^(>|>>)(\/dev\/.*)/ || lc($file) eq "nul") {
7577 # Writes to /dev/null or TTYs don't need to be handled
7578 &webmin_debug_log($1 eq ">" ? "WRITE" : "APPEND", $2) if ($db);
7579 return open($fh, $file);
7581 elsif ($file =~ /^>\s*(([a-zA-Z]:)?\/.*)$/ && !$notemp) {
7582 &webmin_debug_log("WRITE", $1) if ($db);
7583 # Over-writing a file, via a temp file
7585 $file = &translate_filename($file);
7587 # Open the link target instead
7588 $file = &resolve_links($file);
7591 # Cannot open a directory!
7592 if ($noerror) { return 0; }
7593 else { &error("Cannot write to directory $file"); }
7595 my $tmp = &open_tempfile($file);
7596 my $ex = open($fh, ">$tmp");
7597 if (!$ex && $! =~ /permission/i) {
7598 # Could not open temp file .. try opening actual file
7600 $ex = open($fh, ">$file");
7601 delete($main::open_tempfiles{$file});
7604 $main::open_temphandles{$fh} = $file;
7607 if (!$ex && !$noerror) {
7608 &error(&text("efileopen", $file, $!));
7612 elsif ($file =~ /^>\s*(([a-zA-Z]:)?\/.*)$/ && $notemp) {
7613 # Just writing direct to a file
7614 &webmin_debug_log("WRITE", $1) if ($db);
7616 $file = &translate_filename($file);
7617 my @old_attributes = &get_clear_file_attributes($file);
7618 my $ex = open($fh, ">$file");
7619 &reset_file_attributes($file, \@old_attributes);
7620 $main::open_temphandles{$fh} = $file;
7621 if (!$ex && !$noerror) {
7622 &error(&text("efileopen", $file, $!));
7627 elsif ($file =~ /^>>\s*(([a-zA-Z]:)?\/.*)$/) {
7628 # Appending to a file .. nothing special to do
7629 &webmin_debug_log("APPEND", $1) if ($db);
7631 $file = &translate_filename($file);
7632 my @old_attributes = &get_clear_file_attributes($file);
7633 my $ex = open($fh, ">>$file");
7634 &reset_file_attributes($file, \@old_attributes);
7635 $main::open_temphandles{$fh} = $file;
7636 if (!$ex && !$noerror) {
7637 &error(&text("efileopen", $file, $!));
7642 elsif ($file =~ /^([a-zA-Z]:)?\//) {
7643 # Read mode .. nothing to do here
7644 &webmin_debug_log("READ", $file) if ($db);
7645 $file = &translate_filename($file);
7646 return open($fh, $file);
7648 elsif ($file eq ">" || $file eq ">>") {
7649 my ($package, $filename, $line) = caller;
7650 if ($noerror) { return 0; }
7651 else { &error("Missing file to open at ${package}::${filename} line $line"); }
7654 my ($package, $filename, $line) = caller;
7655 &error("Unsupported file or mode $file at ${package}::${filename} line $line");
7660 =head2 close_tempfile(file|handle)
7662 Copies a temp file to the actual file, assuming that all writes were
7663 successful. The handle must have been one passed to open_tempfile.
7669 my $fh = &callers_package($_[0]);
7671 if (defined($file = $main::open_temphandles{$fh})) {
7673 close($fh) || &error(&text("efileclose", $file, $!));
7674 delete($main::open_temphandles{$fh});
7675 return &close_tempfile($file);
7677 elsif (defined($main::open_tempfiles{$_[0]})) {
7679 &webmin_debug_log("CLOSE", $_[0]) if ($gconfig{'debug_what_write'});
7680 my @st = stat($_[0]);
7681 if (&is_selinux_enabled() && &has_command("chcon")) {
7682 # Set original security context
7683 system("chcon --reference=".quotemeta($_[0]).
7684 " ".quotemeta($main::open_tempfiles{$_[0]}).
7685 " >/dev/null 2>&1");
7687 my @old_attributes = &get_clear_file_attributes($_[0]);
7688 rename($main::open_tempfiles{$_[0]}, $_[0]) || &error("Failed to replace $_[0] with $main::open_tempfiles{$_[0]} : $!");
7690 # Set original permissions and ownership
7691 chmod($st[2], $_[0]);
7692 chown($st[4], $st[5], $_[0]);
7694 &reset_file_attributes($_[0], \@old_attributes);
7695 delete($main::open_tempfiles{$_[0]});
7696 @main::temporary_files = grep { $_ ne $main::open_tempfiles{$_[0]} } @main::temporary_files;
7697 if ($main::open_templocks{$_[0]}) {
7698 &unlock_file($_[0]);
7699 delete($main::open_templocks{$_[0]});
7704 # Must be closing a handle not associated with a file
7710 =head2 print_tempfile(handle, text, ...)
7712 Like the normal print function, but calls &error on failure. Useful when
7713 combined with open_tempfile, to ensure that a criticial file is never
7714 only partially written.
7719 my ($fh, @args) = @_;
7720 $fh = &callers_package($fh);
7721 (print $fh @args) || &error(&text("efilewrite",
7722 $main::open_temphandles{$fh} || $fh, $!));
7725 =head2 is_selinux_enabled
7727 Returns 1 if SElinux is supported on this system and enabled, 0 if not.
7730 sub is_selinux_enabled
7732 if (!defined($main::selinux_enabled_cache)) {
7734 if ($gconfig{'os_type'} !~ /-linux$/) {
7735 # Not on linux, so no way
7736 $main::selinux_enabled_cache = 0;
7738 elsif (&read_env_file("/etc/selinux/config", \%seconfig)) {
7739 # Use global config file
7740 $main::selinux_enabled_cache =
7741 $seconfig{'SELINUX'} eq 'disabled' ||
7742 !$seconfig{'SELINUX'} ? 0 : 1;
7745 # Use selinuxenabled command
7746 #$selinux_enabled_cache =
7747 # system("selinuxenabled >/dev/null 2>&1") ? 0 : 1;
7748 $main::selinux_enabled_cache = 0;
7751 return $main::selinux_enabled_cache;
7754 =head2 get_clear_file_attributes(file)
7756 Finds file attributes that may prevent writing, clears them and returns them
7757 as a list. May call error. Mainly for internal use by open_tempfile and
7761 sub get_clear_file_attributes
7765 if ($gconfig{'chattr'}) {
7766 # Get original immutable bit
7767 my $out = &backquote_command(
7768 "lsattr ".quotemeta($file)." 2>/dev/null");
7770 $out =~ s/\s\S+\n//;
7771 @old_attributes = grep { $_ ne '-' } split(//, $out);
7773 if (&indexof("i", @old_attributes) >= 0) {
7774 my $err = &backquote_logged(
7775 "chattr -i ".quotemeta($file)." 2>&1");
7777 &error("Failed to remove immutable bit on ".
7782 return @old_attributes;
7785 =head2 reset_file_attributes(file, &attributes)
7787 Put back cleared attributes on some file. May call error. Mainly for internal
7788 use by close_tempfile.
7791 sub reset_file_attributes
7793 my ($file, $old_attributes) = @_;
7794 if (&indexof("i", @$old_attributes) >= 0) {
7795 my $err = &backquote_logged(
7796 "chattr +i ".quotemeta($file)." 2>&1");
7798 &error("Failed to restore immutable bit on ".
7804 =head2 cleanup_tempnames
7806 Remove all temporary files generated using transname. Typically only called
7807 internally when a Webmin script exits.
7810 sub cleanup_tempnames
7812 foreach my $t (@main::temporary_files) {
7815 @main::temporary_files = ( );
7818 =head2 open_lock_tempfile([handle], file, [no-error])
7820 Returns a temporary file for writing to some actual file, and also locks it.
7821 Effectively the same as calling lock_file and open_tempfile on the same file,
7822 but calls the unlock for you automatically when it is closed.
7825 sub open_lock_tempfile
7827 my ($fh, $file, $noerror, $notemp, $safe) = @_;
7828 $fh = &callers_package($fh);
7829 my $lockfile = $file;
7830 $lockfile =~ s/^[^\/]*//;
7831 if ($lockfile =~ /^\//) {
7832 $main::open_templocks{$lockfile} = &lock_file($lockfile);
7834 return &open_tempfile($fh, $file, $noerror, $notemp, $safe);
7839 $main::end_exit_status ||= $?;
7840 if ($$ == $main::initial_process_id) {
7841 # Exiting from initial process
7842 &cleanup_tempnames();
7843 if ($gconfig{'debug_what_start'} && $main::debug_log_start_time &&
7844 $main::debug_log_start_module eq &get_module_name()) {
7845 my $len = time() - $main::debug_log_start_time;
7846 &webmin_debug_log("STOP", "runtime=$len");
7847 $main::debug_log_start_time = 0;
7849 if (!$ENV{'SCRIPT_NAME'} &&
7850 $main::initial_module_name eq &get_module_name()) {
7851 # In a command-line script - call the real exit, so that the
7852 # exit status gets properly propogated. In some cases this
7853 # was not happening.
7854 exit($main::end_exit_status);
7859 =head2 month_to_number(month)
7861 Converts a month name like feb to a number like 1.
7866 return $month_to_number_map{lc(substr($_[0], 0, 3))};
7869 =head2 number_to_month(number)
7871 Converts a number like 1 to a month name like Feb.
7876 return ucfirst($number_to_month_map{$_[0]});
7879 =head2 get_rbac_module_acl(user, module)
7881 Returns a hash reference of RBAC overrides ACLs for some user and module.
7882 May return undef if none exist (indicating access denied), or the string *
7883 if full access is granted.
7886 sub get_rbac_module_acl
7888 my ($user, $mod) = @_;
7889 eval "use Authen::SolarisRBAC";
7890 return undef if ($@);
7893 if (Authen::SolarisRBAC::chkauth("webmin.$mod.admin", $user)) {
7894 # Automagic webmin.modulename.admin authorization exists .. allow access
7896 if (!Authen::SolarisRBAC::chkauth("webmin.$mod.config", $user)) {
7897 %rv = ( 'noconfig' => 1 );
7904 open(RBAC, &module_root_directory($mod)."/rbac-mapping");
7908 my ($auths, $acls) = split(/\s+/, $_);
7909 my @auths = split(/,/, $auths);
7911 my ($merge) = ($acls =~ s/^\+//);
7913 if ($auths eq "*") {
7914 # These ACLs apply to all RBAC users.
7915 # Only if there is some that match a specific authorization
7916 # later will they be used though.
7919 # Check each of the RBAC authorizations
7920 foreach my $a (@auths) {
7921 if (!Authen::SolarisRBAC::chkauth($a, $user)) {
7926 $foundany++ if ($gotall);
7929 # Found an RBAC authorization - return the ACLs
7930 return "*" if ($acls eq "*");
7931 my %acl = map { split(/=/, $_, 2) } split(/,/, $acls);
7933 # Just add to current set
7934 foreach my $a (keys %acl) {
7945 return !$foundany ? undef : %rv ? \%rv : undef;
7948 =head2 supports_rbac([module])
7950 Returns 1 if RBAC client support is available, such as on Solaris.
7955 return 0 if ($gconfig{'os_type'} ne 'solaris');
7956 eval "use Authen::SolarisRBAC";
7959 #return 0 if (!-r &module_root_directory($_[0])."/rbac-mapping");
7964 =head2 use_rbac_module_acl(user, module)
7966 Returns 1 if some user should use RBAC to get permissions for a module
7969 sub use_rbac_module_acl
7971 my $u = defined($_[0]) ? $_[0] : $base_remote_user;
7972 my $m = defined($_[1]) ? $_[1] : &get_module_name();
7973 return 1 if ($gconfig{'rbacdeny_'.$u}); # RBAC forced for user
7974 my %access = &get_module_acl($u, $m, 1);
7975 return $access{'rbac'} ? 1 : 0;
7978 =head2 execute_command(command, stdin, stdout, stderr, translate-files?, safe?)
7980 Runs some command, possibly feeding it input and capturing output to the
7981 give files or scalar references. The parameters are :
7983 =item command - Full command to run, possibly including shell meta-characters.
7985 =item stdin - File to read input from, or a scalar ref containing input, or undef if no input should be given.
7987 =item stdout - File to write output to, or a scalar ref into which output should be placed, or undef if the output is to be discarded.
7989 =item stderr - File to write error output to, or a scalar ref into which error output should be placed, or undef if the error output is to be discarded.
7991 =item translate-files - Set to 1 to apply filename translation to any filenames. Usually has no effect.
7993 =item safe - Set to 1 if this command is safe and does not modify the state of the system.
7998 my ($cmd, $stdin, $stdout, $stderr, $trans, $safe) = @_;
7999 if (&is_readonly_mode() && !$safe) {
8000 print STDERR "Vetoing command $_[0]\n";
8004 $cmd = &translate_command($cmd);
8006 # Use ` operator where possible
8007 &webmin_debug_log('CMD', "cmd=$cmd") if ($gconfig{'debug_what_cmd'});
8008 if (!$stdin && ref($stdout) && !$stderr) {
8009 $cmd = "($cmd)" if ($gconfig{'os_type'} ne 'windows');
8010 $$stdout = `$cmd 2>$null_file`;
8013 elsif (!$stdin && ref($stdout) && $stdout eq $stderr) {
8014 $cmd = "($cmd)" if ($gconfig{'os_type'} ne 'windows');
8015 $$stdout = `$cmd 2>&1`;
8018 elsif (!$stdin && !$stdout && !$stderr) {
8019 $cmd = "($cmd)" if ($gconfig{'os_type'} ne 'windows');
8020 return system("$cmd >$null_file 2>$null_file <$null_file");
8024 $| = 1; # needed on some systems to flush before forking
8025 pipe(EXECSTDINr, EXECSTDINw);
8026 pipe(EXECSTDOUTr, EXECSTDOUTw);
8027 pipe(EXECSTDERRr, EXECSTDERRw);
8029 if (!($pid = fork())) {
8033 open(STDIN, "<&EXECSTDINr");
8034 open(STDOUT, ">&EXECSTDOUTw");
8035 if (ref($stderr) && $stderr eq $stdout) {
8036 open(STDERR, ">&EXECSTDOUTw");
8039 open(STDERR, ">&EXECSTDERRw");
8046 my $fullcmd = "($cmd)";
8047 if ($stdin && !ref($stdin)) {
8048 $fullcmd .= " <$stdin";
8050 if ($stdout && !ref($stdout)) {
8051 $fullcmd .= " >$stdout";
8053 if ($stderr && !ref($stderr)) {
8054 if ($stderr eq $stdout) {
8055 $fullcmd .= " 2>&1";
8058 $fullcmd .= " 2>$stderr";
8061 if ($gconfig{'os_type'} eq 'windows') {
8065 exec("/bin/sh", "-c", $fullcmd);
8067 print "Exec failed : $!\n";
8074 # Feed input and capture output
8076 if ($stdin && ref($stdin)) {
8077 print EXECSTDINw $$stdin;
8080 if ($stdout && ref($stdout)) {
8082 while(<EXECSTDOUTr>) {
8087 if ($stderr && ref($stderr) && $stderr ne $stdout) {
8089 while(<EXECSTDERRr>) {
8100 =head2 open_readfile(handle, file)
8102 Opens some file for reading. Returns 1 on success, 0 on failure. Pretty much
8103 exactly the same as Perl's open function.
8108 my ($fh, $file) = @_;
8109 $fh = &callers_package($fh);
8110 my $realfile = &translate_filename($file);
8111 &webmin_debug_log('READ', $file) if ($gconfig{'debug_what_read'});
8112 return open($fh, "<".$realfile);
8115 =head2 open_execute_command(handle, command, output?, safe?)
8117 Runs some command, with the specified file handle set to either write to it if
8118 in-or-out is set to 0, or read to it if output is set to 1. The safe flag
8119 indicates if the command modifies the state of the system or not.
8122 sub open_execute_command
8124 my ($fh, $cmd, $mode, $safe) = @_;
8125 $fh = &callers_package($fh);
8126 my $realcmd = &translate_command($cmd);
8127 if (&is_readonly_mode() && !$safe) {
8128 # Don't actually run it
8129 print STDERR "vetoing command $cmd\n";
8132 return open($fh, ">$null_file");
8135 return open($fh, $null_file);
8139 &webmin_debug_log('CMD', "cmd=$realcmd mode=$mode")
8140 if ($gconfig{'debug_what_cmd'});
8142 return open($fh, "| $cmd");
8144 elsif ($mode == 1) {
8145 return open($fh, "$cmd 2>$null_file |");
8147 elsif ($mode == 2) {
8148 return open($fh, "$cmd 2>&1 |");
8152 =head2 translate_filename(filename)
8154 Applies all relevant registered translation functions to a filename. Mostly
8155 for internal use, and typically does nothing.
8158 sub translate_filename
8160 my ($realfile) = @_;
8161 my @funcs = grep { $_->[0] eq &get_module_name() ||
8162 !defined($_->[0]) } @main::filename_callbacks;
8163 foreach my $f (@funcs) {
8165 $realfile = &$func($realfile, @{$f->[2]});
8170 =head2 translate_command(filename)
8172 Applies all relevant registered translation functions to a command. Mostly
8173 for internal use, and typically does nothing.
8176 sub translate_command
8179 my @funcs = grep { $_->[0] eq &get_module_name() ||
8180 !defined($_->[0]) } @main::command_callbacks;
8181 foreach my $f (@funcs) {
8183 $realcmd = &$func($realcmd, @{$f->[2]});
8188 =head2 register_filename_callback(module|undef, &function, &args)
8190 Registers some function to be called when the specified module (or all
8191 modules) tries to open a file for reading and writing. The function must
8192 return the actual file to open. This allows you to override which files
8193 other code actually operates on, via the translate_filename function.
8196 sub register_filename_callback
8198 my ($mod, $func, $args) = @_;
8199 push(@main::filename_callbacks, [ $mod, $func, $args ]);
8202 =head2 register_command_callback(module|undef, &function, &args)
8204 Registers some function to be called when the specified module (or all
8205 modules) tries to execute a command. The function must return the actual
8206 command to run. This allows you to override which commands other other code
8207 actually runs, via the translate_command function.
8210 sub register_command_callback
8212 my ($mod, $func, $args) = @_;
8213 push(@main::command_callbacks, [ $mod, $func, $args ]);
8216 =head2 capture_function_output(&function, arg, ...)
8218 Captures output that some function prints to STDOUT, and returns it. Useful
8219 for functions outside your control that print data when you really want to
8220 manipulate it before output.
8223 sub capture_function_output
8225 my ($func, @args) = @_;
8226 socketpair(SOCKET2, SOCKET1, AF_UNIX, SOCK_STREAM, PF_UNSPEC);
8227 my $old = select(SOCKET1);
8228 my @rv = &$func(@args);
8237 return wantarray ? ($out, \@rv) : $out;
8240 =head2 capture_function_output_tempfile(&function, arg, ...)
8242 Behaves the same as capture_function_output, but uses a temporary file
8243 to avoid buffer full problems.
8246 sub capture_function_output_tempfile
8248 my ($func, @args) = @_;
8249 my $temp = &transname();
8250 open(BUFFER, ">$temp");
8251 my $old = select(BUFFER);
8252 my @rv = &$func(@args);
8255 my $out = &read_file_contents($temp);
8256 &unlink_file($temp);
8257 return wantarray ? ($out, \@rv) : $out;
8260 =head2 modules_chooser_button(field, multiple, [form])
8262 Returns HTML for a button for selecting one or many Webmin modules.
8263 field - Name of the HTML field to place the module names into.
8264 multiple - Set to 1 if multiple modules can be selected.
8265 form - Index of the form on the page.
8268 sub modules_chooser_button
8270 return &theme_modules_chooser_button(@_)
8271 if (defined(&theme_modules_chooser_button));
8272 my $form = defined($_[2]) ? $_[2] : 0;
8273 my $w = $_[1] ? 700 : 500;
8275 if ($_[1] && $gconfig{'db_sizemodules'}) {
8276 ($w, $h) = split(/x/, $gconfig{'db_sizemodules'});
8278 elsif (!$_[1] && $gconfig{'db_sizemodule'}) {
8279 ($w, $h) = split(/x/, $gconfig{'db_sizemodule'});
8281 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";
8284 =head2 substitute_template(text, &hash)
8286 Given some text and a hash reference, for each ocurrance of $FOO or ${FOO} in
8287 the text replaces it with the value of the hash key foo. Also supports blocks
8288 like ${IF-FOO} ... ${ENDIF-FOO}, whose contents are only included if foo is
8289 non-zero, and ${IF-FOO} ... ${ELSE-FOO} ... ${ENDIF-FOO}.
8292 sub substitute_template
8294 # Add some extra fixed parameters to the hash
8295 my %hash = %{$_[1]};
8296 $hash{'hostname'} = &get_system_hostname();
8297 $hash{'webmin_config'} = $config_directory;
8298 $hash{'webmin_etc'} = $config_directory;
8299 $hash{'module_config'} = &get_module_variable('$module_config_directory');
8300 $hash{'webmin_var'} = $var_directory;
8302 # Add time-based parameters, for use in DNS
8303 $hash{'current_time'} = time();
8304 my @tm = localtime($hash{'current_time'});
8305 $hash{'current_year'} = $tm[5]+1900;
8306 $hash{'current_month'} = sprintf("%2.2d", $tm[4]+1);
8307 $hash{'current_day'} = sprintf("%2.2d", $tm[3]);
8308 $hash{'current_hour'} = sprintf("%2.2d", $tm[2]);
8309 $hash{'current_minute'} = sprintf("%2.2d", $tm[1]);
8310 $hash{'current_second'} = sprintf("%2.2d", $tm[0]);
8312 # Actually do the substition
8314 foreach my $s (keys %hash) {
8315 next if ($s eq ''); # Prevent just $ from being subbed
8318 $rv =~ s/\$\{\Q$us\E\}/$sv/g;
8319 $rv =~ s/\$\Q$us\E/$sv/g;
8321 # Replace ${IF}..${ELSE}..${ENDIF} block with first value,
8322 # and ${IF}..${ENDIF} with value
8323 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ELSE-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)/$2/g;
8324 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)/$2/g;
8326 # Replace $IF..$ELSE..$ENDIF block with first value,
8327 # and $IF..$ENDIF with value
8328 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ELSE-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)/$2/g;
8329 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)/$2/g;
8331 # Replace ${IFEQ}..${ENDIFEQ} block with first value if
8332 # matching, nothing if not
8333 $rv =~ s/\$\{IFEQ-\Q$us\E-\Q$sv\E\}(\n?)([\000-\377]*?)\$\{ENDIFEQ-\Q$us\E-\Q$sv\E\}(\n?)/$2/g;
8334 $rv =~ s/\$\{IFEQ-\Q$us\E-[^\}]+}(\n?)([\000-\377]*?)\$\{ENDIFEQ-\Q$us\E-[^\}]+\}(\n?)//g;
8336 # Replace $IFEQ..$ENDIFEQ block with first value if
8337 # matching, nothing if not
8338 $rv =~ s/\$IFEQ-\Q$us\E-\Q$sv\E(\n?)([\000-\377]*?)\$ENDIFEQ-\Q$us\E-\Q$sv\E(\n?)/$2/g;
8339 $rv =~ s/\$IFEQ-\Q$us\E-\S+(\n?)([\000-\377]*?)\$ENDIFEQ-\Q$us\E-\S+(\n?)//g;
8342 # Replace ${IF}..${ELSE}..${ENDIF} block with second value,
8343 # and ${IF}..${ENDIF} with nothing
8344 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ELSE-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)/$4/g;
8345 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)//g;
8347 # Replace $IF..$ELSE..$ENDIF block with second value,
8348 # and $IF..$ENDIF with nothing
8349 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ELSE-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)/$4/g;
8350 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)//g;
8352 # Replace ${IFEQ}..${ENDIFEQ} block with nothing
8353 $rv =~ s/\$\{IFEQ-\Q$us\E-[^\}]+}(\n?)([\000-\377]*?)\$\{ENDIFEQ-\Q$us\E-[^\}]+\}(\n?)//g;
8354 $rv =~ s/\$IFEQ-\Q$us\E-\S+(\n?)([\000-\377]*?)\$ENDIFEQ-\Q$us\E-\S+(\n?)//g;
8358 # Now assume any $IF blocks whose variables are not present in the hash
8359 # evaluate to false.
8360 # $IF...$ELSE x $ENDIF => x
8361 $rv =~ s/\$\{IF\-([A-Z]+)\}.*?\$\{ELSE\-\1\}(.*?)\$\{ENDIF\-\1\}/$2/gs;
8362 # $IF...x...$ENDIF => (nothing)
8363 $rv =~ s/\$\{IF\-([A-Z]+)\}.*?\$\{ENDIF\-\1\}//gs;
8364 # ${var} => (nothing)
8365 $rv =~ s/\$\{[A-Z]+\}//g;
8370 =head2 running_in_zone
8372 Returns 1 if the current Webmin instance is running in a Solaris zone. Used to
8373 disable module and features that are not appropriate, like those that modify
8374 mounted filesystems.
8379 return 0 if ($gconfig{'os_type'} ne 'solaris' ||
8380 $gconfig{'os_version'} < 10);
8381 my $zn = `zonename 2>$null_file`;
8383 return $zn && $zn ne "global";
8386 =head2 running_in_vserver
8388 Returns 1 if the current Webmin instance is running in a Linux VServer.
8389 Used to disable modules and features that are not appropriate.
8392 sub running_in_vserver
8394 return 0 if ($gconfig{'os_type'} !~ /^\*-linux$/);
8397 open(MTAB, "/etc/mtab");
8399 my ($dev, $mp) = split(/\s+/, $_);
8400 if ($mp eq "/" && $dev =~ /^\/dev\/hdv/) {
8409 =head2 running_in_xen
8411 Returns 1 if Webmin is running inside a Xen instance, by looking
8412 at /proc/xen/capabilities.
8417 return 0 if (!-r "/proc/xen/capabilities");
8418 my $cap = &read_file_contents("/proc/xen/capabilities");
8419 return $cap =~ /control_d/ ? 0 : 1;
8422 =head2 running_in_openvz
8424 Returns 1 if Webmin is running inside an OpenVZ container, by looking
8425 at /proc/vz/veinfo for a non-zero line.
8428 sub running_in_openvz
8430 return 0 if (!-r "/proc/vz/veinfo");
8431 my $lref = &read_file_lines("/proc/vz/veinfo", 1);
8432 return 0 if (!$lref || !@$lref);
8433 foreach my $l (@$lref) {
8435 my @ll = split(/\s+/, $l);
8436 return 0 if ($ll[0] eq '0');
8441 =head2 list_categories(&modules, [include-empty])
8443 Returns a hash mapping category codes to names, including any custom-defined
8444 categories. The modules parameter must be an array ref of module hash objects,
8445 as returned by get_all_module_infos.
8450 my ($mods, $empty) = @_;
8451 my (%cats, %catnames);
8452 &read_file("$config_directory/webmin.catnames", \%catnames);
8453 foreach my $o (@lang_order_list) {
8454 &read_file("$config_directory/webmin.catnames.$o", \%catnames);
8459 foreach my $m (@$mods) {
8460 my $c = $m->{'category'};
8461 next if ($cats{$c});
8462 if (defined($catnames{$c})) {
8463 $cats{$c} = $catnames{$c};
8465 elsif ($text{"category_$c"}) {
8466 $cats{$c} = $text{"category_$c"};
8469 # try to get category name from module ..
8470 my %mtext = &load_language($m->{'dir'});
8471 if ($mtext{"category_$c"}) {
8472 $cats{$c} = $mtext{"category_$c"};
8475 $c = $m->{'category'} = "";
8476 $cats{$c} = $text{"category_$c"};
8483 =head2 is_readonly_mode
8485 Returns 1 if the current user is in read-only mode, and thus all writes
8486 to files and command execution should fail.
8489 sub is_readonly_mode
8491 if (!defined($main::readonly_mode_cache)) {
8492 my %gaccess = &get_module_acl(undef, "");
8493 $main::readonly_mode_cache = $gaccess{'readonly'} ? 1 : 0;
8495 return $main::readonly_mode_cache;
8498 =head2 command_as_user(user, with-env?, command, ...)
8500 Returns a command to execute some command as the given user, using the
8501 su statement. If on Linux, the /bin/sh shell is forced in case the user
8502 does not have a valid shell. If with-env is set to 1, the -s flag is added
8503 to the su command to read the user's .profile or .bashrc file.
8508 my ($user, $env, @args) = @_;
8509 my @uinfo = getpwnam($user);
8510 if ($uinfo[8] ne "/bin/sh" && $uinfo[8] !~ /\/bash$/) {
8511 # User shell doesn't appear to be valid
8512 if ($gconfig{'os_type'} =~ /-linux$/) {
8513 # Use -s /bin/sh to force it
8514 $shellarg = " -s /bin/sh";
8516 elsif ($gconfig{'os_type'} eq 'freebsd' ||
8517 $gconfig{'os_type'} eq 'solaris' &&
8518 $gconfig{'os_version'} >= 11 ||
8519 $gconfig{'os_type'} eq 'macos') {
8520 # Use -m and force /bin/sh
8521 @args = ( "/bin/sh", "-c", quotemeta(join(" ", @args)) );
8525 my $rv = "su".($env ? " -" : "").$shellarg.
8526 " ".quotemeta($user)." -c ".quotemeta(join(" ", @args));
8530 =head2 list_osdn_mirrors(project, file)
8532 This function is now deprecated in favor of letting sourceforge just
8533 redirect to the best mirror, and now just returns their primary download URL.
8536 sub list_osdn_mirrors
8538 my ($project, $file) = @_;
8539 return ( { 'url' => "http://downloads.sourceforge.net/$project/$file",
8541 'mirror' => 'downloads' } );
8544 =head2 convert_osdn_url(url)
8546 Given a URL like http://osdn.dl.sourceforge.net/sourceforge/project/file.zip
8547 or http://prdownloads.sourceforge.net/project/file.zip , convert it
8548 to a real URL on the sourceforge download redirector.
8551 sub convert_osdn_url
8554 if ($url =~ /^http:\/\/[^\.]+.dl.sourceforge.net\/sourceforge\/([^\/]+)\/(.*)$/ ||
8555 $url =~ /^http:\/\/prdownloads.sourceforge.net\/([^\/]+)\/(.*)$/) {
8556 # Always use the Sourceforge mail download URL, which does
8557 # a location-based redirect for us
8558 my ($project, $file) = ($1, $2);
8559 $url = "http://prdownloads.sourceforge.net/sourceforge/".
8561 return wantarray ? ( $url, 0 ) : $url;
8564 # Some other source .. don't change
8565 return wantarray ? ( $url, 2 ) : $url;
8569 =head2 get_current_dir
8571 Returns the directory the current process is running in.
8577 if ($gconfig{'os_type'} eq 'windows') {
8590 =head2 supports_users
8592 Returns 1 if the current OS supports Unix user concepts and functions like
8593 su , getpw* and so on. This will be true on Linux and other Unixes, but false
8599 return $gconfig{'os_type'} ne 'windows';
8602 =head2 supports_symlinks
8604 Returns 1 if the current OS supports symbolic and hard links. This will not
8605 be the case on Windows.
8608 sub supports_symlinks
8610 return $gconfig{'os_type'} ne 'windows';
8613 =head2 quote_path(path)
8615 Returns a path with safe quoting for the current operating system.
8621 if ($gconfig{'os_type'} eq 'windows' || $path =~ /^[a-z]:/i) {
8622 # Windows only supports "" style quoting
8626 return quotemeta($path);
8630 =head2 get_windows_root
8632 Returns the base windows system directory, like c:/windows.
8635 sub get_windows_root
8637 if ($ENV{'SystemRoot'}) {
8638 my $rv = $ENV{'SystemRoot'};
8643 return -d "c:/windows" ? "c:/windows" : "c:/winnt";
8647 =head2 read_file_contents(file)
8649 Given a filename, returns its complete contents as a string. Effectively
8650 the same as the Perl construct `cat file`.
8653 sub read_file_contents
8655 &open_readfile(FILE, $_[0]) || return undef;
8662 =head2 unix_crypt(password, salt)
8664 Performs Unix encryption on a password, using the built-in crypt function or
8665 the Crypt::UnixCrypt module if the former does not work. The salt parameter
8666 must be either an already-hashed password, or a two-character alpha-numeric
8672 my ($pass, $salt) = @_;
8673 return "" if ($salt !~ /^[a-zA-Z0-9\.\/]{2}/); # same as real crypt
8674 my $rv = eval "crypt(\$pass, \$salt)";
8676 return $rv if ($rv && !$@);
8677 eval "use Crypt::UnixCrypt";
8679 return Crypt::UnixCrypt::crypt($pass, $salt);
8682 &error("Failed to encrypt password : $err");
8686 =head2 split_quoted_string(string)
8688 Given a string like I<foo "bar baz" quux>, returns the array :
8692 sub split_quoted_string
8696 while($str =~ /^"([^"]*)"\s*([\000-\377]*)$/ ||
8697 $str =~ /^'([^']*)'\s*([\000-\377]*)$/ ||
8698 $str =~ /^(\S+)\s*([\000-\377]*)$/) {
8705 =head2 write_to_http_cache(url, file|&data)
8707 Updates the Webmin cache with the contents of the given file, possibly also
8708 clearing out old data. Mainly for internal use by http_download.
8711 sub write_to_http_cache
8713 my ($url, $file) = @_;
8714 return 0 if (!$gconfig{'cache_size'});
8716 # Don't cache downloads that look dynamic
8717 if ($url =~ /cgi-bin/ || $url =~ /\?/) {
8721 # Check if the current module should do caching
8722 if ($gconfig{'cache_mods'} =~ /^\!(.*)$/) {
8723 # Caching all except some modules
8724 my @mods = split(/\s+/, $1);
8725 return 0 if (&indexof(&get_module_name(), @mods) != -1);
8727 elsif ($gconfig{'cache_mods'}) {
8728 # Only caching some modules
8729 my @mods = split(/\s+/, $gconfig{'cache_mods'});
8730 return 0 if (&indexof(&get_module_name(), @mods) == -1);
8736 $size = length($$file);
8739 my @st = stat($file);
8743 if ($size > $gconfig{'cache_size'}) {
8744 # Bigger than the whole cache - so don't save it
8749 $cfile = "$main::http_cache_directory/$cfile";
8751 # See how much we have cached currently, clearing old files
8753 mkdir($main::http_cache_directory, 0700) if (!-d $main::http_cache_directory);
8754 opendir(CACHEDIR, $main::http_cache_directory);
8755 foreach my $f (readdir(CACHEDIR)) {
8756 next if ($f eq "." || $f eq "..");
8757 my $path = "$main::http_cache_directory/$f";
8758 my @st = stat($path);
8759 if ($gconfig{'cache_days'} &&
8760 time()-$st[9] > $gconfig{'cache_days'}*24*60*60) {
8761 # This file is too old .. trash it
8766 push(@cached, [ $path, $st[7], $st[9] ]);
8770 @cached = sort { $a->[2] <=> $b->[2] } @cached;
8771 while($total+$size > $gconfig{'cache_size'} && @cached) {
8772 # Cache is too big .. delete some files until the new one will fit
8773 unlink($cached[0]->[0]);
8774 $total -= $cached[0]->[1];
8778 # Finally, write out the new file
8780 &open_tempfile(CACHEFILE, ">$cfile");
8781 &print_tempfile(CACHEFILE, $$file);
8782 &close_tempfile(CACHEFILE);
8785 my ($ok, $err) = ©_source_dest($file, $cfile);
8791 =head2 check_in_http_cache(url)
8793 If some URL is in the cache and valid, return the filename for it. Mainly
8794 for internal use by http_download.
8797 sub check_in_http_cache
8800 return undef if (!$gconfig{'cache_size'});
8802 # Check if the current module should do caching
8803 if ($gconfig{'cache_mods'} =~ /^\!(.*)$/) {
8804 # Caching all except some modules
8805 my @mods = split(/\s+/, $1);
8806 return 0 if (&indexof(&get_module_name(), @mods) != -1);
8808 elsif ($gconfig{'cache_mods'}) {
8809 # Only caching some modules
8810 my @mods = split(/\s+/, $gconfig{'cache_mods'});
8811 return 0 if (&indexof(&get_module_name(), @mods) == -1);
8816 $cfile = "$main::http_cache_directory/$cfile";
8817 my @st = stat($cfile);
8818 return undef if (!@st || !$st[7]);
8819 if ($gconfig{'cache_days'} && time()-$st[9] > $gconfig{'cache_days'}*24*60*60) {
8824 open(TOUCH, ">>$cfile"); # Update the file time, to keep it in the cache
8829 =head2 supports_javascript
8831 Returns 1 if the current browser is assumed to support javascript.
8834 sub supports_javascript
8836 if (defined(&theme_supports_javascript)) {
8837 return &theme_supports_javascript();
8839 return $ENV{'MOBILE_DEVICE'} ? 0 : 1;
8842 =head2 get_module_name
8844 Returns the name of the Webmin module that called this function. For internal
8845 use only by other API functions.
8850 return &get_module_variable('$module_name');
8853 =head2 get_module_variable(name, [ref])
8855 Returns the value of some variable which is set in the caller's context, if
8856 using the new WebminCore package. For internal use only.
8859 sub get_module_variable
8861 my ($v, $wantref) = @_;
8862 my $slash = $wantref ? "\\" : "";
8863 my $thispkg = &web_libs_package();
8864 if ($thispkg eq 'WebminCore') {
8865 my ($vt, $vn) = split('', $v, 2);
8867 for(my $i=0; ($callpkg) = caller($i); $i++) {
8868 last if ($callpkg ne $thispkg);
8870 return eval "${slash}${vt}${callpkg}::${vn}";
8872 return eval "${slash}${v}";
8875 =head2 clear_time_locale()
8877 Temporarily force the locale to C, until reset_time_locale is called. This is
8878 useful if your code is going to call C<strftime> from the POSIX package, and
8879 you want to ensure that the output is in a consistent format.
8882 sub clear_time_locale
8884 if ($main::clear_time_locale_count == 0) {
8887 $main::clear_time_locale_old = POSIX::setlocale(POSIX::LC_TIME);
8888 POSIX::setlocale(POSIX::LC_TIME, "C");
8891 $main::clear_time_locale_count++;
8894 =head2 reset_time_locale()
8896 Revert the locale to whatever it was before clear_time_locale was called
8899 sub reset_time_locale
8901 if ($main::clear_time_locale_count == 1) {
8903 POSIX::setlocale(POSIX::LC_TIME, $main::clear_time_locale_old);
8904 $main::clear_time_locale_old = undef;
8907 $main::clear_time_locale_count--;
8910 =head2 callers_package(filehandle)
8912 Convert a non-module filehandle like FOO to one qualified with the
8913 caller's caller's package, like fsdump::FOO. For internal use only.
8919 my $callpkg = (caller(1))[0];
8920 my $thispkg = &web_libs_package();
8921 if (!ref($fh) && $fh !~ /::/ &&
8922 $callpkg ne $thispkg && $thispkg eq 'WebminCore') {
8923 $fh = $callpkg."::".$fh;
8928 =head2 web_libs_package()
8930 Returns the package this code is in. We can't always trust __PACKAGE__. For
8934 sub web_libs_package
8936 if ($called_from_webmin_core) {
8937 return "WebminCore";
8942 =head2 get_userdb_string
8944 Returns the URL-style string for connecting to the users and groups database
8947 sub get_userdb_string
8950 &get_miniserv_config(\%miniserv);
8951 return $miniserv{'userdb'};
8954 =head2 connect_userdb(string)
8956 Returns a handle for talking to a user database - may be a DBI or LDAP handle.
8957 On failure returns an error message string. In an array context, returns the
8964 my ($proto, $user, $pass, $host, $prefix, $args) = &split_userdb_string($str);
8965 if ($proto eq "mysql") {
8966 # Connect to MySQL with DBI
8967 my $drh = eval "use DBI; DBI->install_driver('mysql');";
8968 $drh || return $text{'sql_emysqldriver'};
8969 my ($host, $port) = split(/:/, $host);
8970 my $cstr = "database=$prefix;host=$host";
8971 $cstr .= ";port=$port" if ($port);
8972 my $dbh = $drh->connect($cstr, $user, $pass, { });
8973 $dbh || return &text('sql_emysqlconnect', $drh->errstr);
8974 return wantarray ? ($dbh, $proto) : $dbh;
8976 elsif ($proto eq "postgresql") {
8977 # Connect to PostgreSQL with DBI
8978 my $drh = eval "use DBI; DBI->install_driver('Pg');";
8979 $drh || return $text{'sql_epostgresqldriver'};
8980 my ($host, $port) = split(/:/, $host);
8981 my $cstr = "dbname=$prefix;host=$host";
8982 $cstr .= ";port=$port" if ($port);
8983 my $dbh = $drh->connect($cstr, $user, $pass);
8984 $dbh || return &text('sql_epostgresqlconnect', $drh->errstr);
8985 return wantarray ? ($dbh, $proto) : $dbh;
8987 elsif ($proto eq "ldap") {
8989 return "LDAP not done yet";
8992 return "Unknown protocol $proto";
8996 =head2 disconnect_userdb(string, &handle)
8998 Closes a handle opened by connect_userdb
9001 sub disconnect_userdb
9004 if ($str =~ /^(mysql|postgresql):/) {
9008 elsif ($str =~ /^ldap:/) {
9014 =head2 split_userdb_string(string)
9016 Converts a string like mysql://user:pass@host/db into separate parts
9019 sub split_userdb_string
9022 if ($str =~ /^([a-z]+):\/\/([^:]*):([^\@]*)\@([a-z0-9\.\-\_]+)\/([^\?]+)(\?(.*))?$/) {
9023 my ($proto, $user, $pass, $host, $prefix, $argstr) =
9024 ($1, $2, $3, $4, $5, $7);
9025 my %args = map { split(/=/, $_, 2) } split(/\&/, $argstr);
9026 return ($proto, $user, $pass, $host, $prefix, \%args);
9031 $done_web_lib_funcs = 1;