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 $main::no_miniserv_userdb = 1;
1318 my $msg = join("", @_);
1319 $msg =~ s/<[^>]*>//g;
1320 if (!$main::error_must_die) {
1321 print STDERR "Error: ",$msg,"\n";
1323 &load_theme_library();
1324 if ($main::error_must_die) {
1325 if ($gconfig{'error_stack'}) {
1326 print STDERR "Error: ",$msg,"\n";
1327 for(my $i=0; my @stack = caller($i); $i++) {
1328 print STDERR "File: $stack[1] Line: $stack[2] ",
1329 "Function: $stack[3]\n";
1334 elsif (!$ENV{'REQUEST_METHOD'}) {
1335 # Show text-only error
1336 print STDERR "$text{'error'}\n";
1337 print STDERR "-----\n";
1338 print STDERR ($main::whatfailed ? "$main::whatfailed : " : ""),
1340 print STDERR "-----\n";
1341 if ($gconfig{'error_stack'}) {
1343 print STDERR $text{'error_stack'},"\n";
1344 for(my $i=0; my @stack = caller($i); $i++) {
1345 print STDERR &text('error_stackline',
1346 $stack[1], $stack[2], $stack[3]),"\n";
1351 elsif (defined(&theme_error)) {
1355 &header($text{'error'}, "");
1357 print "<h3>",($main::whatfailed ? "$main::whatfailed : " : ""),
1359 if ($gconfig{'error_stack'}) {
1361 print "<h3>$text{'error_stack'}</h3>\n";
1363 print "<tr> <td><b>$text{'error_file'}</b></td> ",
1364 "<td><b>$text{'error_line'}</b></td> ",
1365 "<td><b>$text{'error_sub'}</b></td> </tr>\n";
1366 for($i=0; my @stack = caller($i); $i++) {
1368 print "<td>$stack[1]</td>\n";
1369 print "<td>$stack[2]</td>\n";
1370 print "<td>$stack[3]</td>\n";
1376 if ($ENV{'HTTP_REFERER'} && $main::completed_referers_check) {
1377 &footer($ENV{'HTTP_REFERER'}, $text{'error_previous'});
1383 &unlock_all_files();
1384 &cleanup_tempnames();
1388 =head2 popup_error([message]+)
1390 This function is almost identical to error, but displays the message with HTML
1391 headers suitable for a popup window.
1396 $main::no_miniserv_userdb = 1;
1397 &load_theme_library();
1398 if ($main::error_must_die) {
1401 elsif (defined(&theme_popup_error)) {
1402 &theme_popup_error(@_);
1405 &popup_header($text{'error'}, "");
1406 print "<h3>",($main::whatfailed ? "$main::whatfailed : " : ""),@_,"</h3>\n";
1409 &unlock_all_files();
1410 &cleanup_tempnames();
1414 =head2 error_setup(message)
1416 Registers a message to be prepended to all error messages displayed by the
1422 $main::whatfailed = $_[0];
1425 =head2 wait_for(handle, regexp, regexp, ...)
1427 Reads from the input stream until one of the regexps matches, and returns the
1428 index of the matching regexp, or -1 if input ended before any matched. This is
1429 very useful for parsing the output of interactive programs, and can be used with
1430 a two-way pipe to feed input to a program in response to output matched by
1433 If the matching regexp contains bracketed sub-expressions, their values will
1434 be placed in the global array @matches, indexed starting from 1. You cannot
1435 use the Perl variables $1, $2 and so on to capture matches.
1439 $rv = wait_for($loginfh, "username:");
1441 error("Didn't get username prompt");
1443 print $loginfh "joe\n";
1444 $rv = wait_for($loginfh, "password:");
1446 error("Didn't get password prompt");
1448 print $loginfh "smeg\n";
1453 my ($c, $i, $sw, $rv, $ha);
1454 undef($wait_for_input);
1455 if ($wait_for_debug) {
1456 print STDERR "wait_for(",join(",", @_),")\n";
1458 $ha = &callers_package($_[0]);
1459 if ($wait_for_debug) {
1460 print STDERR "File handle=$ha fd=",fileno($ha),"\n";
1465 " if ((\$c = getc(\$ha)) eq \"\") { return -1; }\n".
1466 " \$wait_for_input .= \$c;\n";
1467 if ($wait_for_debug) {
1468 $codes .= "print STDERR \$wait_for_input,\"\\n\";";
1470 for($i=1; $i<@_; $i++) {
1471 $sw = $i>1 ? "elsif" : "if";
1472 $codes .= " $sw (\$wait_for_input =~ /$_[$i]/i) { \$hit = $i-1; }\n";
1475 " if (defined(\$hit)) {\n".
1476 " \@matches = (-1, \$1, \$2, \$3, \$4, \$5, \$6, \$7, \$8, \$9);\n".
1482 &error("wait_for error : $@\n");
1487 =head2 fast_wait_for(handle, string, string, ...)
1489 This function behaves very similar to wait_for (documented above), but instead
1490 of taking regular expressions as parameters, it takes strings. As soon as the
1491 input contains one of them, it will return the index of the matching string.
1492 If the input ends before any match, it returns -1.
1497 my ($inp, $maxlen, $ha, $i, $c, $inpl);
1498 for($i=1; $i<@_; $i++) {
1499 $maxlen = length($_[$i]) > $maxlen ? length($_[$i]) : $maxlen;
1503 if (($c = getc($ha)) eq "") {
1504 &error("fast_wait_for read error : $!");
1507 if (length($inp) > $maxlen) {
1508 $inp = substr($inp, length($inp)-$maxlen);
1510 $inpl = length($inp);
1511 for($i=1; $i<@_; $i++) {
1512 if ($_[$i] eq substr($inp, $inpl-length($_[$i]))) {
1519 =head2 has_command(command)
1521 Returns the full path to the executable if some command is in the path, or
1522 undef if not found. If the given command is already an absolute path and
1523 exists, then the same path will be returned.
1528 if (!$_[0]) { return undef; }
1529 if (exists($main::has_command_cache{$_[0]})) {
1530 return $main::has_command_cache{$_[0]};
1533 my $slash = $gconfig{'os_type'} eq 'windows' ? '\\' : '/';
1534 if ($_[0] =~ /^\// || $_[0] =~ /^[a-z]:[\\\/]/i) {
1535 # Absolute path given - just use it
1536 my $t = &translate_filename($_[0]);
1537 $rv = (-x $t && !-d _) ? $_[0] : undef;
1540 # Check each directory in the path
1542 foreach my $d (split($path_separator, $ENV{'PATH'})) {
1543 next if ($donedir{$d}++);
1544 $d =~ s/$slash$// if ($d ne $slash);
1545 my $t = &translate_filename("$d/$_[0]");
1546 if (-x $t && !-d _) {
1547 $rv = $d.$slash.$_[0];
1550 if ($gconfig{'os_type'} eq 'windows') {
1551 foreach my $sfx (".exe", ".com", ".bat") {
1552 my $t = &translate_filename("$d/$_[0]").$sfx;
1553 if (-r $t && !-d _) {
1554 $rv = $d.$slash.$_[0].$sfx;
1561 $main::has_command_cache{$_[0]} = $rv;
1565 =head2 make_date(seconds, [date-only], [fmt])
1567 Converts a Unix date/time in seconds to a human-readable form, by default
1568 formatted like dd/mmm/yyyy hh:mm:ss. Parameters are :
1570 =item seconds - Unix time is seconds to convert.
1572 =item date-only - If set to 1, exclude the time from the returned string.
1574 =item fmt - Optional, one of dd/mon/yyyy, dd/mm/yyyy, mm/dd/yyyy or yyyy/mm/dd
1579 my ($secs, $only, $fmt) = @_;
1580 my @tm = localtime($secs);
1583 $fmt = $gconfig{'dateformat'} || 'dd/mon/yyyy';
1585 if ($fmt eq 'dd/mon/yyyy') {
1586 $date = sprintf "%2.2d/%s/%4.4d",
1587 $tm[3], $text{"smonth_".($tm[4]+1)}, $tm[5]+1900;
1589 elsif ($fmt eq 'dd/mm/yyyy') {
1590 $date = sprintf "%2.2d/%2.2d/%4.4d", $tm[3], $tm[4]+1, $tm[5]+1900;
1592 elsif ($fmt eq 'mm/dd/yyyy') {
1593 $date = sprintf "%2.2d/%2.2d/%4.4d", $tm[4]+1, $tm[3], $tm[5]+1900;
1595 elsif ($fmt eq 'yyyy/mm/dd') {
1596 $date = sprintf "%4.4d/%2.2d/%2.2d", $tm[5]+1900, $tm[4]+1, $tm[3];
1598 elsif ($fmt eq 'd. mon yyyy') {
1599 $date = sprintf "%d. %s %4.4d",
1600 $tm[3], $text{"smonth_".($tm[4]+1)}, $tm[5]+1900;
1602 elsif ($fmt eq 'dd.mm.yyyy') {
1603 $date = sprintf "%2.2d.%2.2d.%4.4d", $tm[3], $tm[4]+1, $tm[5]+1900;
1605 elsif ($fmt eq 'yyyy-mm-dd') {
1606 $date = sprintf "%4.4d-%2.2d-%2.2d", $tm[5]+1900, $tm[4]+1, $tm[3];
1609 $date .= sprintf " %2.2d:%2.2d", $tm[2], $tm[1];
1614 =head2 file_chooser_button(input, type, [form], [chroot], [addmode])
1616 Return HTML for a button that pops up a file chooser when clicked, and places
1617 the selected filename into another HTML field. The parameters are :
1619 =item input - Name of the form field to store the filename in.
1621 =item type - 0 for file or directory chooser, or 1 for directory only.
1623 =item form - Index of the form containing the button.
1625 =item chroot - If set to 1, the chooser will be limited to this directory.
1627 =item addmode - If set to 1, the selected filename will be appended to the text box instead of replacing it's contents.
1630 sub file_chooser_button
1632 return &theme_file_chooser_button(@_)
1633 if (defined(&theme_file_chooser_button));
1634 my $form = defined($_[2]) ? $_[2] : 0;
1635 my $chroot = defined($_[3]) ? $_[3] : "/";
1636 my $add = int($_[4]);
1637 my ($w, $h) = (400, 300);
1638 if ($gconfig{'db_sizefile'}) {
1639 ($w, $h) = split(/x/, $gconfig{'db_sizefile'});
1641 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";
1644 =head2 popup_window_button(url, width, height, scrollbars?, &field-mappings)
1646 Returns HTML for a button that will popup a chooser window of some kind. The
1649 =item url - Base URL of the popup window's contents
1651 =item width - Width of the window in pixels
1653 =item height - Height in pixels
1655 =item scrollbars - Set to 1 if the window should have scrollbars
1657 The field-mappings parameter is an array ref of array refs containing
1659 =item - Attribute to assign field to in the popup window
1661 =item - Form field name
1663 =item - CGI parameter to URL for value, if any
1666 sub popup_window_button
1668 return &theme_popup_window_button(@_) if (defined(&theme_popup_window_button));
1669 my ($url, $w, $h, $scroll, $fields) = @_;
1670 my $scrollyn = $scroll ? "yes" : "no";
1671 my $rv = "<input type=button onClick='";
1672 foreach my $m (@$fields) {
1673 $rv .= "$m->[0] = form.$m->[1]; ";
1675 my $sep = $url =~ /\?/ ? "&" : "?";
1676 $rv .= "chooser = window.open(\"$url\"";
1677 foreach my $m (@$fields) {
1679 $rv .= "+\"$sep$m->[2]=\"+escape($m->[0].value)";
1683 $rv .= ", \"chooser\", \"toolbar=no,menubar=no,scrollbars=$scrollyn,resizable=yes,width=$w,height=$h\"); ";
1684 foreach my $m (@$fields) {
1685 $rv .= "chooser.$m->[0] = $m->[0]; ";
1686 $rv .= "window.$m->[0] = $m->[0]; ";
1688 $rv .= "' value=\"...\">";
1692 =head2 read_acl(&user-module-hash, &user-list-hash)
1694 Reads the Webmin acl file into the given hash references. The first is indexed
1695 by a combined key of username,module , with the value being set to 1 when
1696 the user has access to that module. The second is indexed by username, with
1697 the value being an array ref of allowed modules.
1699 This function is deprecated in favour of foreign_available, which performs a
1700 more comprehensive check of module availability.
1705 if (!%main::acl_hash_cache) {
1706 # Read from local files
1708 open(ACL, &acl_filename());
1710 if (/^([^:]+):\s*(.*)/) {
1712 my @mods = split(/\s+/, $2);
1713 foreach my $m (@mods) {
1714 $main::acl_hash_cache{$user,$m}++;
1716 $main::acl_array_cache{$user} = \@mods;
1722 my $userdb = &get_userdb_string();
1723 my ($dbh, $proto) = $userdb ? &connect_userdb($userdb) : ( );
1725 if ($proto eq "mysql" || $proto eq "postgresql") {
1726 # Select usernames and modules from SQL DB
1727 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'");
1728 if ($cmd && $cmd->execute()) {
1729 while(my ($user, $mods) = $cmd->fetchrow()) {
1730 my @mods = split(/\s+/, $mods);
1731 foreach my $m (@mods) {
1732 $main::acl_hash_cache{$user,
1735 $main::acl_array_cache{$user} = \@mods;
1738 $cmd->finish() if ($cmd);
1740 elsif ($proto eq "ldap") {
1741 # XXX read from LDAP
1743 &disconnect_userdb($userdb, $dbh);
1746 if ($_[0]) { %{$_[0]} = %main::acl_hash_cache; }
1747 if ($_[1]) { %{$_[1]} = %main::acl_array_cache; }
1752 Returns the file containing the webmin ACL, which is usually
1753 /etc/webmin/webmin.acl.
1758 return "$config_directory/webmin.acl";
1763 Does nothing, but kept around for compatability.
1770 =head2 get_miniserv_config(&hash)
1772 Reads the Webmin webserver's (miniserv.pl) configuration file, usually located
1773 at /etc/webmin/miniserv.conf, and stores its names and values in the given
1777 sub get_miniserv_config
1779 return &read_file_cached(
1780 $ENV{'MINISERV_CONFIG'} || "$config_directory/miniserv.conf", $_[0]);
1783 =head2 put_miniserv_config(&hash)
1785 Writes out the Webmin webserver configuration file from the contents of
1786 the given hash ref. This should be initially populated by get_miniserv_config,
1789 get_miniserv_config(\%miniserv);
1790 $miniserv{'port'} = 10005;
1791 put_miniserv_config(\%miniserv);
1795 sub put_miniserv_config
1797 &write_file($ENV{'MINISERV_CONFIG'} || "$config_directory/miniserv.conf",
1801 =head2 restart_miniserv([nowait])
1803 Kill the old miniserv process and re-start it, then optionally waits for
1804 it to restart. This will apply all configuration settings.
1807 sub restart_miniserv
1810 return undef if (&is_readonly_mode());
1812 &get_miniserv_config(\%miniserv) || return;
1815 if ($gconfig{'os_type'} ne 'windows') {
1816 # On Unix systems, we can restart with a signal
1817 my ($pid, $addr, $i);
1818 $miniserv{'inetd'} && return;
1819 my @oldst = stat($miniserv{'pidfile'});
1820 $pid = $ENV{'MINISERV_PID'};
1822 open(PID, $miniserv{'pidfile'}) ||
1823 &error("Failed to open PID file $miniserv{'pidfile'}");
1826 $pid || &error("Invalid PID file $miniserv{'pidfile'}");
1829 # Just signal miniserv to restart
1830 &kill_logged('HUP', $pid) || &error("Incorrect Webmin PID $pid");
1832 # Wait till new PID is written, indicating a restart
1833 for($i=0; $i<60; $i++) {
1835 my @newst = stat($miniserv{'pidfile'});
1836 last if ($newst[9] != $oldst[9]);
1838 $i < 60 || &error("Webmin server did not write new PID file");
1840 ## Totally kill the process and re-run it
1841 #$SIG{'TERM'} = 'IGNORE';
1842 #&kill_logged('TERM', $pid);
1843 #&system_logged("$config_directory/start >/dev/null 2>&1 </dev/null");
1846 # On Windows, we need to use the flag file
1847 open(TOUCH, ">$miniserv{'restartflag'}");
1852 # wait for miniserv to come back up
1853 $addr = inet_aton($miniserv{'bind'} ? $miniserv{'bind'} : "127.0.0.1");
1855 for($i=0; $i<20; $i++) {
1857 socket(STEST, PF_INET, SOCK_STREAM, getprotobyname("tcp"));
1858 my $rv = connect(STEST,
1859 pack_sockaddr_in($miniserv{'port'}, $addr));
1861 last if ($rv && ++$ok >= 2);
1863 $i < 20 || &error("Failed to restart Webmin server!");
1867 =head2 reload_miniserv
1869 Sends a USR1 signal to the miniserv process, telling it to read-read it's
1870 configuration files. Not all changes will be applied though, such as the
1871 IP addresses and ports to accept connections on.
1876 return undef if (&is_readonly_mode());
1878 &get_miniserv_config(\%miniserv) || return;
1880 if ($gconfig{'os_type'} ne 'windows') {
1881 # Send a USR1 signal to re-read the config
1882 my ($pid, $addr, $i);
1883 $miniserv{'inetd'} && return;
1884 $pid = $ENV{'MINISERV_PID'};
1886 open(PID, $miniserv{'pidfile'}) ||
1887 &error("Failed to open PID file $miniserv{'pidfile'}");
1890 $pid || &error("Invalid PID file $miniserv{'pidfile'}");
1892 &kill_logged('USR1', $pid) || &error("Incorrect Webmin PID $pid");
1894 # Make sure this didn't kill Webmin!
1896 if (!kill(0, $pid)) {
1897 print STDERR "USR1 signal killed Webmin - restarting\n";
1898 &system_logged("$config_directory/start >/dev/null 2>&1 </dev/null");
1902 # On Windows, we need to use the flag file
1903 open(TOUCH, ">$miniserv{'reloadflag'}");
1908 =head2 check_os_support(&minfo, [os-type, os-version], [api-only])
1910 Returns 1 if some module is supported on the current operating system, or the
1911 OS supplies as parameters. The parameters are :
1913 =item minfo - A hash ref of module information, as returned by get_module_info
1915 =item os-type - The Webmin OS code to use instead of the system's real OS, such as redhat-linux
1917 =item os-version - The Webmin OS version to use, such as 13.0
1919 =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.
1922 sub check_os_support
1924 my $oss = $_[0]->{'os_support'};
1925 if ($_[3] && $oss && $_[0]->{'api_os_support'}) {
1926 # May provide usable API
1927 $oss .= " ".$_[0]->{'api_os_support'};
1929 if ($_[0]->{'nozone'} && &running_in_zone()) {
1930 # Not supported in a Solaris Zone
1933 if ($_[0]->{'novserver'} && &running_in_vserver()) {
1934 # Not supported in a Linux Vserver
1937 if ($_[0]->{'noopenvz'} && &running_in_openvz()) {
1938 # Not supported in an OpenVZ container
1941 return 1 if (!$oss || $oss eq '*');
1942 my $osver = $_[2] || $gconfig{'os_version'};
1943 my $ostype = $_[1] || $gconfig{'os_type'};
1946 my ($os, $ver, $codes);
1947 my ($neg) = ($oss =~ s/^!//); # starts with !
1948 $anyneg++ if ($neg);
1949 if ($oss =~ /^([^\/\s]+)\/([^\{\s]+)\{([^\}]*)\}\s*(.*)$/) {
1951 $os = $1; $ver = $2; $codes = $3; $oss = $4;
1953 elsif ($oss =~ /^([^\/\s]+)\/([^\/\s]+)\s*(.*)$/) {
1955 $os = $1; $ver = $2; $oss = $3;
1957 elsif ($oss =~ /^([^\{\s]+)\{([^\}]*)\}\s*(.*)$/) {
1959 $os = $1; $codes = $2; $oss = $3;
1961 elsif ($oss =~ /^\{([^\}]*)\}\s*(.*)$/) {
1963 $codes = $1; $oss = $2;
1965 elsif ($oss =~ /^(\S+)\s*(.*)$/) {
1967 $os = $1; $oss = $2;
1970 next if ($os && !($os eq $ostype ||
1971 $ostype =~ /^(\S+)-(\S+)$/ && $os eq "*-$2"));
1972 if ($ver =~ /^([0-9\.]+)\-([0-9\.]+)$/) {
1973 next if ($osver < $1 || $osver > $2);
1975 elsif ($ver =~ /^([0-9\.]+)\-\*$/) {
1976 next if ($osver < $1);
1978 elsif ($ver =~ /^\*\-([0-9\.]+)$/) {
1979 next if ($osver > $1);
1982 next if ($ver ne $osver);
1984 next if ($codes && !eval $codes);
1990 =head2 http_download(host, port, page, destfile, [&error], [&callback], [sslmode], [user, pass], [timeout], [osdn-convert], [no-cache], [&headers])
1992 Downloads data from a HTTP url to a local file or string. The parameters are :
1994 =item host - The hostname part of the URL, such as www.google.com
1996 =item port - The HTTP port number, such as 80
1998 =item page - The filename part of the URL, like /index.html
2000 =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.
2002 =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.
2004 =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.
2006 =item sslmode - If set to 1, an HTTPS connection is used instead of HTTP.
2008 =item user - If set, HTTP authentication is done with this username.
2010 =item pass - The HTTP password to use with the username above.
2012 =item timeout - A timeout in seconds to wait for the TCP connection to be established before failing.
2014 =item osdn-convert - If set to 1, URL for downloads from sourceforge are converted to use an appropriate mirror site.
2016 =item no-cache - If set to 1, Webmin's internal caching for this URL is disabled.
2018 =item headers - If set to a hash ref of additional HTTP headers, they will be added to the request.
2023 my ($host, $port, $page, $dest, $error, $cbfunc, $ssl, $user, $pass,
2024 $timeout, $osdn, $nocache, $headers) = @_;
2025 if ($gconfig{'debug_what_net'}) {
2026 &webmin_debug_log('HTTP', "host=$host port=$port page=$page ssl=$ssl".
2027 ($user ? " user=$user pass=$pass" : "").
2028 (ref($dest) ? "" : " dest=$dest"));
2031 # Convert OSDN URL first
2032 my $prot = $ssl ? "https://" : "http://";
2033 my $portstr = $ssl && $port == 443 ||
2034 !$ssl && $port == 80 ? "" : ":$port";
2035 ($host, $port, $page, $ssl) = &parse_http_url(
2036 &convert_osdn_url($prot.$host.$portstr.$page));
2039 # Check if we already have cached the URL
2040 my $url = ($ssl ? "https://" : "http://").$host.":".$port.$page;
2041 my $cfile = &check_in_http_cache($url);
2042 if ($cfile && !$nocache) {
2043 # Yes! Copy to dest file or variable
2044 &$cbfunc(6, $url) if ($cbfunc);
2046 &open_readfile(CACHEFILE, $cfile);
2048 $$dest = <CACHEFILE>;
2052 ©_source_dest($cfile, $dest);
2059 push(@headers, [ "Host", $host ]);
2060 push(@headers, [ "User-agent", "Webmin" ]);
2061 push(@headers, [ "Accept-language", "en" ]);
2063 my $auth = &encode_base64("$user:$pass");
2064 $auth =~ tr/\r\n//d;
2065 push(@headers, [ "Authorization", "Basic $auth" ]);
2067 foreach my $hname (keys %$headers) {
2068 push(@headers, [ $hname, $headers->{$hname} ]);
2071 # Actually download it
2072 $main::download_timed_out = undef;
2073 local $SIG{ALRM} = \&download_timeout;
2074 alarm($timeout || 60);
2075 my $h = &make_http_connection($host, $port, $ssl, "GET", $page, \@headers);
2077 $h = $main::download_timed_out if ($main::download_timed_out);
2079 if ($error) { $$error = $h; return; }
2080 else { &error($h); }
2082 &complete_http_download($h, $dest, $error, $cbfunc, $osdn, $host, $port,
2083 $headers, $ssl, $nocache);
2084 if ((!$error || !$$error) && !$nocache) {
2085 &write_to_http_cache($url, $dest);
2089 =head2 complete_http_download(handle, destfile, [&error], [&callback], [osdn], [oldhost], [oldport], [&send-headers], [old-ssl], [no-cache])
2091 Do a HTTP download, after the headers have been sent. For internal use only,
2092 typically called by http_download.
2095 sub complete_http_download
2097 local ($line, %header, @headers, $s); # Kept local so that callback funcs
2103 ($line = &read_http_connection($_[0])) =~ tr/\r\n//d;
2104 if ($line !~ /^HTTP\/1\..\s+(200|30[0-9])(\s+|$)/) {
2106 if ($_[2]) { ${$_[2]} = $line; return; }
2107 else { &error("Download failed : $line"); }
2110 &$cbfunc(1, $rcode >= 300 && $rcode < 400 ? 1 : 0)
2113 $line = &read_http_connection($_[0]);
2114 $line =~ tr/\r\n//d;
2115 $line =~ /^(\S+):\s+(.*)$/ || last;
2116 $header{lc($1)} = $2;
2117 push(@headers, [ lc($1), $2 ]);
2120 if ($main::download_timed_out) {
2121 if ($_[2]) { ${$_[2]} = $main::download_timed_out; return 0; }
2122 else { &error($main::download_timed_out); }
2124 &$cbfunc(2, $header{'content-length'}) if ($cbfunc);
2125 if ($rcode >= 300 && $rcode < 400) {
2126 # follow the redirect
2127 &$cbfunc(5, $header{'location'}) if ($cbfunc);
2128 my ($host, $port, $page, $ssl);
2129 if ($header{'location'} =~ /^(http|https):\/\/([^:]+):(\d+)(\/.*)?$/) {
2130 $ssl = $1 eq 'https' ? 1 : 0;
2131 $host = $2; $port = $3; $page = $4 || "/";
2133 elsif ($header{'location'} =~ /^(http|https):\/\/([^:\/]+)(\/.*)?$/) {
2134 $ssl = $1 eq 'https' ? 1 : 0;
2135 $host = $2; $port = 80; $page = $3 || "/";
2137 elsif ($header{'location'} =~ /^\// && $_[5]) {
2138 # Relative to same server
2142 $page = $header{'location'};
2144 elsif ($header{'location'}) {
2145 # Assume relative to same dir .. not handled
2146 if ($_[2]) { ${$_[2]} = "Invalid Location header $header{'location'}"; return; }
2147 else { &error("Invalid Location header $header{'location'}"); }
2150 if ($_[2]) { ${$_[2]} = "Missing Location header"; return; }
2151 else { &error("Missing Location header"); }
2154 ($page, $params) = split(/\?/, $page);
2156 $page .= "?".$params if (defined($params));
2157 &http_download($host, $port, $page, $_[1], $_[2], $cbfunc, $ssl,
2158 undef, undef, undef, $_[4], $_[9], $_[7]);
2163 # Append to a variable
2164 while(defined($buf = &read_http_connection($_[0], 1024))) {
2166 &$cbfunc(3, length(${$_[1]})) if ($cbfunc);
2172 if (!&open_tempfile(PFILE, ">$_[1]", 1)) {
2173 if ($_[2]) { ${$_[2]} = "Failed to write to $_[1] : $!"; return; }
2174 else { &error("Failed to write to $_[1] : $!"); }
2176 binmode(PFILE); # For windows
2177 while(defined($buf = &read_http_connection($_[0], 1024))) {
2178 &print_tempfile(PFILE, $buf);
2179 $got += length($buf);
2180 &$cbfunc(3, $got) if ($cbfunc);
2182 &close_tempfile(PFILE);
2183 if ($header{'content-length'} &&
2184 $got != $header{'content-length'}) {
2185 if ($_[2]) { ${$_[2]} = "Download incomplete"; return; }
2186 else { &error("Download incomplete"); }
2189 &$cbfunc(4) if ($cbfunc);
2191 &close_http_connection($_[0]);
2195 =head2 ftp_download(host, file, destfile, [&error], [&callback], [user, pass], [port])
2197 Download data from an FTP site to a local file. The parameters are :
2199 =item host - FTP server hostname
2201 =item file - File on the FTP server to download
2203 =item destfile - File on the Webmin system to download data to
2205 =item error - If set to a string ref, any error message is written into this string and the function returns 0 on failure, 1 on success. Otherwise, error is called on failure.
2207 =item callback - If set to a function ref, it will be called after each block of data is received. This is typically set to \&progress_callback, for printing download progress.
2209 =item user - Username to login to the FTP server as. If missing, Webmin will login as anonymous.
2211 =item pass - Password for the username above.
2213 =item port - FTP server port number, which defaults to 21 if not set.
2218 my ($host, $file, $dest, $error, $cbfunc, $user, $pass, $port) = @_;
2220 if ($gconfig{'debug_what_net'}) {
2221 &webmin_debug_log('FTP', "host=$host port=$port file=$file".
2222 ($user ? " user=$user pass=$pass" : "").
2223 (ref($dest) ? "" : " dest=$dest"));
2227 if (&is_readonly_mode()) {
2228 if ($_[3]) { ${$_[3]} = "FTP connections not allowed in readonly mode";
2230 else { &error("FTP connections not allowed in readonly mode"); }
2233 # Check if we already have cached the URL
2234 my $url = "ftp://".$host.$file;
2235 my $cfile = &check_in_http_cache($url);
2237 # Yes! Copy to dest file or variable
2238 &$cbfunc(6, $url) if ($cbfunc);
2240 &open_readfile(CACHEFILE, $cfile);
2242 $$dest = <CACHEFILE>;
2246 ©_source_dest($cfile, $dest);
2251 # Actually download it
2252 $main::download_timed_out = undef;
2253 local $SIG{ALRM} = \&download_timeout;
2256 if ($gconfig{'ftp_proxy'} =~ /^http:\/\/(\S+):(\d+)/ && !&no_proxy($_[0])) {
2257 # download through http-style proxy
2259 if (&open_socket($1, $2, "SOCK", \$error)) {
2261 if ($main::download_timed_out) {
2263 if ($_[3]) { ${$_[3]} = $main::download_timed_out; return 0; }
2264 else { &error($main::download_timed_out); }
2266 my $esc = $_[1]; $esc =~ s/ /%20/g;
2267 my $up = "$_[5]:$_[6]\@" if ($_[5]);
2268 my $portstr = $port == 21 ? "" : ":$port";
2269 print SOCK "GET ftp://$up$_[0]$portstr$esc HTTP/1.0\r\n";
2270 print SOCK "User-agent: Webmin\r\n";
2271 if ($gconfig{'proxy_user'}) {
2272 my $auth = &encode_base64(
2273 "$gconfig{'proxy_user'}:$gconfig{'proxy_pass'}");
2274 $auth =~ tr/\r\n//d;
2275 print SOCK "Proxy-Authorization: Basic $auth\r\n";
2278 &complete_http_download({ 'fh' => "SOCK" }, $_[2], $_[3], $_[4]);
2281 elsif (!$gconfig{'proxy_fallback'}) {
2283 if ($error) { $$error = $main::download_timed_out; return 0; }
2284 else { &error($main::download_timed_out); }
2289 # connect to host and login with real FTP protocol
2290 &open_socket($_[0], $port, "SOCK", $_[3]) || return 0;
2292 if ($main::download_timed_out) {
2293 if ($_[3]) { ${$_[3]} = $main::download_timed_out; return 0; }
2294 else { &error($main::download_timed_out); }
2296 &ftp_command("", 2, $_[3]) || return 0;
2298 # Login as supplied user
2299 my @urv = &ftp_command("USER $_[5]", [ 2, 3 ], $_[3]);
2301 if (int($urv[1]/100) == 3) {
2302 &ftp_command("PASS $_[6]", 2, $_[3]) || return 0;
2306 # Login as anonymous
2307 my @urv = &ftp_command("USER anonymous", [ 2, 3 ], $_[3]);
2309 if (int($urv[1]/100) == 3) {
2310 &ftp_command("PASS root\@".&get_system_hostname(), 2,
2314 &$cbfunc(1, 0) if ($cbfunc);
2317 # get the file size and tell the callback
2318 &ftp_command("TYPE I", 2, $_[3]) || return 0;
2319 my $size = &ftp_command("SIZE $_[1]", 2, $_[3]);
2320 defined($size) || return 0;
2322 &$cbfunc(2, int($size));
2326 my $pasv = &ftp_command("PASV", 2, $_[3]);
2327 defined($pasv) || return 0;
2328 $pasv =~ /\(([0-9,]+)\)/;
2329 @n = split(/,/ , $1);
2330 &open_socket("$n[0].$n[1].$n[2].$n[3]",
2331 $n[4]*256 + $n[5], "CON", $_[3]) || return 0;
2332 &ftp_command("RETR $_[1]", 1, $_[3]) || return 0;
2336 &open_tempfile(PFILE, ">$_[2]", 1);
2337 while(read(CON, $buf, 1024) > 0) {
2338 &print_tempfile(PFILE, $buf);
2339 $got += length($buf);
2340 &$cbfunc(3, $got) if ($cbfunc);
2342 &close_tempfile(PFILE);
2344 if ($got != $size) {
2345 if ($_[3]) { ${$_[3]} = "Download incomplete"; return 0; }
2346 else { &error("Download incomplete"); }
2348 &$cbfunc(4) if ($cbfunc);
2350 &ftp_command("", 2, $_[3]) || return 0;
2354 &ftp_command("QUIT", 2, $_[3]) || return 0;
2358 &write_to_http_cache($url, $dest);
2362 =head2 ftp_upload(host, file, srcfile, [&error], [&callback], [user, pass], [port])
2364 Upload data from a local file to an FTP site. The parameters are :
2366 =item host - FTP server hostname
2368 =item file - File on the FTP server to write to
2370 =item srcfile - File on the Webmin system to upload data from
2372 =item error - If set to a string ref, any error message is written into this string and the function returns 0 on failure, 1 on success. Otherwise, error is called on failure.
2374 =item callback - If set to a function ref, it will be called after each block of data is received. This is typically set to \&progress_callback, for printing upload progress.
2376 =item user - Username to login to the FTP server as. If missing, Webmin will login as anonymous.
2378 =item pass - Password for the username above.
2380 =item port - FTP server port number, which defaults to 21 if not set.
2387 if (&is_readonly_mode()) {
2388 if ($_[3]) { ${$_[3]} = "FTP connections not allowed in readonly mode";
2390 else { &error("FTP connections not allowed in readonly mode"); }
2393 $main::download_timed_out = undef;
2394 local $SIG{ALRM} = \&download_timeout;
2397 # connect to host and login
2398 &open_socket($_[0], $_[7] || 21, "SOCK", $_[3]) || return 0;
2400 if ($main::download_timed_out) {
2401 if ($_[3]) { ${$_[3]} = $main::download_timed_out; return 0; }
2402 else { &error($main::download_timed_out); }
2404 &ftp_command("", 2, $_[3]) || return 0;
2406 # Login as supplied user
2407 my @urv = &ftp_command("USER $_[5]", [ 2, 3 ], $_[3]);
2409 if (int($urv[1]/100) == 3) {
2410 &ftp_command("PASS $_[6]", 2, $_[3]) || return 0;
2414 # Login as anonymous
2415 my @urv = &ftp_command("USER anonymous", [ 2, 3 ], $_[3]);
2417 if (int($urv[1]/100) == 3) {
2418 &ftp_command("PASS root\@".&get_system_hostname(), 2,
2422 &$cbfunc(1, 0) if ($cbfunc);
2424 &ftp_command("TYPE I", 2, $_[3]) || return 0;
2426 # get the file size and tell the callback
2427 my @st = stat($_[2]);
2429 &$cbfunc(2, $st[7]);
2433 my $pasv = &ftp_command("PASV", 2, $_[3]);
2434 defined($pasv) || return 0;
2435 $pasv =~ /\(([0-9,]+)\)/;
2436 @n = split(/,/ , $1);
2437 &open_socket("$n[0].$n[1].$n[2].$n[3]", $n[4]*256 + $n[5], "CON", $_[3]) || return 0;
2438 &ftp_command("STOR $_[1]", 1, $_[3]) || return 0;
2443 while(read(PFILE, $buf, 1024) > 0) {
2445 $got += length($buf);
2446 &$cbfunc(3, $got) if ($cbfunc);
2450 if ($got != $st[7]) {
2451 if ($_[3]) { ${$_[3]} = "Upload incomplete"; return 0; }
2452 else { &error("Upload incomplete"); }
2454 &$cbfunc(4) if ($cbfunc);
2457 &ftp_command("", 2, $_[3]) || return 0;
2458 &ftp_command("QUIT", 2, $_[3]) || return 0;
2464 =head2 no_proxy(host)
2466 Checks if some host is on the no proxy list. For internal use by the
2467 http_download and ftp_download functions.
2472 my $ip = &to_ipaddress($_[0]);
2473 foreach my $n (split(/\s+/, $gconfig{'noproxy'})) {
2474 return 1 if ($_[0] =~ /\Q$n\E/ ||
2480 =head2 open_socket(host, port, handle, [&error])
2482 Open a TCP connection to some host and port, using a file handle. The
2485 =item host - Hostname or IP address to connect to.
2487 =item port - TCP port number.
2489 =item handle - A file handle name to use for the connection.
2491 =item error - A string reference to write any error message into. If not set, the error function is called on failure.
2496 my ($host, $port, $fh, $err) = @_;
2497 $fh = &callers_package($fh);
2499 if ($gconfig{'debug_what_net'}) {
2500 &webmin_debug_log('TCP', "host=$host port=$port");
2502 if (!socket($fh, PF_INET, SOCK_STREAM, getprotobyname("tcp"))) {
2503 if ($err) { $$err = "Failed to create socket : $!"; return 0; }
2504 else { &error("Failed to create socket : $!"); }
2507 if (!($addr = inet_aton($host))) {
2508 if ($err) { $$err = "Failed to lookup IP address for $host"; return 0; }
2509 else { &error("Failed to lookup IP address for $host"); }
2511 if ($gconfig{'bind_proxy'}) {
2512 if (!bind($fh,pack_sockaddr_in(0, inet_aton($gconfig{'bind_proxy'})))) {
2513 if ($err) { $$err = "Failed to bind to source address : $!"; return 0; }
2514 else { &error("Failed to bind to source address : $!"); }
2517 if (!connect($fh, pack_sockaddr_in($port, $addr))) {
2518 if ($err) { $$err = "Failed to connect to $host:$port : $!"; return 0; }
2519 else { &error("Failed to connect to $host:$port : $!"); }
2521 my $old = select($fh); $| =1; select($old);
2525 =head2 download_timeout
2527 Called when a download times out. For internal use only.
2530 sub download_timeout
2532 $main::download_timed_out = "Download timed out";
2535 =head2 ftp_command(command, expected, [&error], [filehandle])
2537 Send an FTP command, and die if the reply is not what was expected. Mainly
2538 for internal use by the ftp_download and ftp_upload functions.
2543 my ($cmd, $expect, $err, $fh) = @_;
2545 $fh = &callers_package($fh);
2548 my $what = $cmd ne "" ? "<i>$cmd</i>" : "initial connection";
2550 print $fh "$cmd\r\n";
2553 if (!($line = <$fh>)) {
2555 if ($err) { $$err = "Failed to read reply to $what"; return undef; }
2556 else { &error("Failed to read reply to $what"); }
2558 $line =~ /^(...)(.)(.*)$/;
2561 foreach my $c (@$expect) {
2562 $found++ if (int($1/100) == $c);
2566 $found++ if (int($1/100) == $_[1]);
2570 if ($err) { $$err = "$what failed : $3"; return undef; }
2571 else { &error("$what failed : $3"); }
2576 # Need to skip extra stuff..
2578 if (!($line = <$fh>)) {
2580 if ($$err) { $$err = "Failed to read reply to $what";
2582 else { &error("Failed to read reply to $what"); }
2584 $line =~ /^(....)(.*)$/; $reply .= $2;
2585 if ($1 eq "$rcode ") { last; }
2589 return wantarray ? ($reply, $rcode) : $reply;
2592 =head2 to_ipaddress(hostname)
2594 Converts a hostname to an a.b.c.d format IP address, or returns undef if
2595 it cannot be resolved.
2600 if (&check_ipaddress($_[0])) {
2604 my $hn = gethostbyname($_[0]);
2605 return undef if (!$hn);
2606 local @ip = unpack("CCCC", $hn);
2607 return join("." , @ip);
2611 =head2 icons_table(&links, &titles, &icons, [columns], [href], [width], [height], &befores, &afters)
2613 Renders a 4-column table of icons. The useful parameters are :
2615 =item links - An array ref of link destination URLs for the icons.
2617 =item titles - An array ref of titles to appear under the icons.
2619 =item icons - An array ref of URLs for icon images.
2621 =item columns - Number of columns to layout the icons with. Defaults to 4.
2626 &load_theme_library();
2627 if (defined(&theme_icons_table)) {
2628 &theme_icons_table(@_);
2632 my $cols = $_[3] ? $_[3] : 4;
2633 my $per = int(100.0 / $cols);
2634 print "<table class='icons_table' width=100% cellpadding=5>\n";
2635 for(my $i=0; $i<@{$_[0]}; $i++) {
2636 if ($i%$cols == 0) { print "<tr>\n"; }
2637 print "<td width=$per% align=center valign=top>\n";
2638 &generate_icon($_[2]->[$i], $_[1]->[$i], $_[0]->[$i],
2639 ref($_[4]) ? $_[4]->[$i] : $_[4], $_[5], $_[6],
2640 $_[7]->[$i], $_[8]->[$i]);
2642 if ($i%$cols == $cols-1) { print "</tr>\n"; }
2644 while($i++%$cols) { print "<td width=$per%></td>\n"; $need_tr++; }
2645 print "</tr>\n" if ($need_tr);
2649 =head2 replace_file_line(file, line, [newline]*)
2651 Replaces one line in some file with 0 or more new lines. The parameters are :
2653 =item file - Full path to some file, like /etc/hosts.
2655 =item line - Line number to replace, starting from 0.
2657 =item newline - Zero or more lines to put into the file at the given line number. These must be newline-terminated strings.
2660 sub replace_file_line
2663 my $realfile = &translate_filename($_[0]);
2664 open(FILE, $realfile);
2667 if (@_ > 2) { splice(@lines, $_[1], 1, @_[2..$#_]); }
2668 else { splice(@lines, $_[1], 1); }
2669 &open_tempfile(FILE, ">$realfile");
2670 &print_tempfile(FILE, @lines);
2671 &close_tempfile(FILE);
2674 =head2 read_file_lines(file, [readonly])
2676 Returns a reference to an array containing the lines from some file. This
2677 array can be modified, and will be written out when flush_file_lines()
2678 is called. The parameters are :
2680 =item file - Full path to the file to read.
2682 =item readonly - Should be set 1 if the caller is only going to read the lines, and never write it out.
2686 $lref = read_file_lines("/etc/hosts");
2687 push(@$lref, "127.0.0.1 localhost");
2688 flush_file_lines("/etc/hosts");
2694 my ($package, $filename, $line) = caller;
2695 print STDERR "Missing file to read at ${package}::${filename} line $line\n";
2697 my $realfile = &translate_filename($_[0]);
2698 if (!$main::file_cache{$realfile}) {
2701 &webmin_debug_log('READ', $_[0]) if ($gconfig{'debug_what_read'});
2702 open(READFILE, $realfile);
2705 $eol = /\r\n$/ ? "\r\n" : "\n";
2711 $main::file_cache{$realfile} = \@lines;
2712 $main::file_cache_noflush{$realfile} = $_[1];
2713 $main::file_cache_eol{$realfile} = $eol || "\n";
2716 # Make read-write if currently readonly
2718 $main::file_cache_noflush{$realfile} = 0;
2721 return $main::file_cache{$realfile};
2724 =head2 flush_file_lines([file], [eol])
2726 Write out to a file previously read by read_file_lines to disk (except
2727 for those marked readonly). The parameters are :
2729 =item file - The file to flush out.
2731 =item eof - End-of-line character for each line. Defaults to \n.
2734 sub flush_file_lines
2738 local $trans = &translate_filename($_[0]);
2739 $main::file_cache{$trans} ||
2740 &error("flush_file_lines called on non-loaded file $trans");
2741 push(@files, $trans);
2744 @files = ( keys %main::file_cache );
2746 foreach my $f (@files) {
2747 my $eol = $_[1] || $main::file_cache_eol{$f} || "\n";
2748 if (!$main::file_cache_noflush{$f}) {
2749 no warnings; # XXX Bareword file handles should go away
2750 &open_tempfile(FLUSHFILE, ">$f");
2751 foreach my $line (@{$main::file_cache{$f}}) {
2752 (print FLUSHFILE $line,$eol) ||
2753 &error(&text("efilewrite", $f, $!));
2755 &close_tempfile(FLUSHFILE);
2757 delete($main::file_cache{$f});
2758 delete($main::file_cache_noflush{$f});
2762 =head2 unflush_file_lines(file)
2764 Clear the internal cache of some given file, previously read by read_file_lines.
2767 sub unflush_file_lines
2769 my $realfile = &translate_filename($_[0]);
2770 delete($main::file_cache{$realfile});
2771 delete($main::file_cache_noflush{$realfile});
2774 =head2 unix_user_input(fieldname, user, [form])
2776 Returns HTML for an input to select a Unix user. By default this is a text
2777 box with a user popup button next to it.
2782 if (defined(&theme_unix_user_input)) {
2783 return &theme_unix_user_input(@_);
2785 return "<input name=$_[0] size=13 value=\"$_[1]\"> ".
2786 &user_chooser_button($_[0], 0, $_[2] || 0)."\n";
2789 =head2 unix_group_input(fieldname, user, [form])
2791 Returns HTML for an input to select a Unix group. By default this is a text
2792 box with a group popup button next to it.
2795 sub unix_group_input
2797 if (defined(&theme_unix_group_input)) {
2798 return &theme_unix_group_input(@_);
2800 return "<input name=$_[0] size=13 value=\"$_[1]\"> ".
2801 &group_chooser_button($_[0], 0, $_[2] || 0)."\n";
2804 =head2 hlink(text, page, [module], [width], [height])
2806 Returns HTML for a link that when clicked on pops up a window for a Webmin
2807 help page. The parameters are :
2809 =item text - Text for the link.
2811 =item page - Help page code, such as 'intro'.
2813 =item module - Module the help page is in. Defaults to the current module.
2815 =item width - Width of the help popup window. Defaults to 600 pixels.
2817 =item height - Height of the help popup window. Defaults to 400 pixels.
2819 The actual help pages are in each module's help sub-directory, in files with
2825 if (defined(&theme_hlink)) {
2826 return &theme_hlink(@_);
2828 my $mod = $_[2] ? $_[2] : &get_module_name();
2829 my $width = $_[3] || $tconfig{'help_width'} || $gconfig{'help_width'} || 600;
2830 my $height = $_[4] || $tconfig{'help_height'} || $gconfig{'help_height'} || 400;
2831 return "<a onClick='window.open(\"$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>";
2834 =head2 user_chooser_button(field, multiple, [form])
2836 Returns HTML for a javascript button for choosing a Unix user or users.
2837 The parameters are :
2839 =item field - Name of the HTML field to place the username into.
2841 =item multiple - Set to 1 if multiple users can be selected.
2843 =item form - Index of the form on the page.
2846 sub user_chooser_button
2848 return undef if (!&supports_users());
2849 return &theme_user_chooser_button(@_)
2850 if (defined(&theme_user_chooser_button));
2851 my $form = defined($_[2]) ? $_[2] : 0;
2852 my $w = $_[1] ? 500 : 300;
2854 if ($_[1] && $gconfig{'db_sizeusers'}) {
2855 ($w, $h) = split(/x/, $gconfig{'db_sizeusers'});
2857 elsif (!$_[1] && $gconfig{'db_sizeuser'}) {
2858 ($w, $h) = split(/x/, $gconfig{'db_sizeuser'});
2860 return "<input type=button onClick='ifield = form.$_[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";
2863 =head2 group_chooser_button(field, multiple, [form])
2865 Returns HTML for a javascript button for choosing a Unix group or groups
2866 The parameters are :
2868 =item field - Name of the HTML field to place the group name into.
2870 =item multiple - Set to 1 if multiple groups can be selected.
2872 =item form - Index of the form on the page.
2875 sub group_chooser_button
2877 return undef if (!&supports_users());
2878 return &theme_group_chooser_button(@_)
2879 if (defined(&theme_group_chooser_button));
2880 my $form = defined($_[2]) ? $_[2] : 0;
2881 my $w = $_[1] ? 500 : 300;
2883 if ($_[1] && $gconfig{'db_sizeusers'}) {
2884 ($w, $h) = split(/x/, $gconfig{'db_sizeusers'});
2886 elsif (!$_[1] && $gconfig{'db_sizeuser'}) {
2887 ($w, $h) = split(/x/, $gconfig{'db_sizeuser'});
2889 return "<input type=button onClick='ifield = form.$_[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";
2892 =head2 foreign_check(module, [api-only])
2894 Checks if some other module exists and is supported on this OS. The parameters
2897 =item module - Name of the module to check.
2899 =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.
2904 my ($mod, $api) = @_;
2906 my $mdir = &module_root_directory($mod);
2907 &read_file_cached("$mdir/module.info", \%minfo) || return 0;
2908 return &check_os_support(\%minfo, undef, undef, $api);
2911 =head2 foreign_exists(module)
2913 Checks if some other module exists. The module parameter is the short module
2919 my $mdir = &module_root_directory($_[0]);
2920 return -r "$mdir/module.info";
2923 =head2 foreign_available(module)
2925 Returns 1 if some module is installed, and acessible to the current user. The
2926 module parameter is the module directory name.
2929 sub foreign_available
2931 return 0 if (!&foreign_check($_[0]) &&
2932 !$gconfig{'available_even_if_no_support'});
2933 my %foreign_module_info = &get_module_info($_[0]);
2935 # Check list of allowed modules
2937 &read_acl(\%acl, undef);
2938 return 0 if (!$acl{$base_remote_user,$_[0]} &&
2939 !$acl{$base_remote_user,'*'});
2941 # Check for usermod restrictions
2942 my @usermods = &list_usermods();
2943 return 0 if (!&available_usermods( [ \%foreign_module_info ], \@usermods));
2945 if (&get_product_name() eq "webmin") {
2946 # Check if the user has any RBAC privileges in this module
2947 if (&supports_rbac($_[0]) &&
2948 &use_rbac_module_acl(undef, $_[0])) {
2949 # RBAC is enabled for this user and module - check if he
2951 my $rbacs = &get_rbac_module_acl($remote_user, $_[0]);
2952 return 0 if (!$rbacs);
2954 elsif ($gconfig{'rbacdeny_'.$base_remote_user}) {
2955 # If denying access to modules not specifically allowed by
2956 # RBAC, then prevent access
2961 # Check readonly support
2962 if (&is_readonly_mode()) {
2963 return 0 if (!$foreign_module_info{'readonly'});
2966 # Check if theme vetos
2967 if (defined(&theme_foreign_available)) {
2968 return 0 if (!&theme_foreign_available($_[0]));
2971 # Check if licence module vetos
2972 if ($main::licence_module) {
2973 return 0 if (!&foreign_call($main::licence_module,
2974 "check_module_licence", $_[0]));
2980 =head2 foreign_require(module, [file], [package])
2982 Brings in functions from another module, and places them in the Perl namespace
2983 with the same name as the module. The parameters are :
2985 =item module - The source module's directory name, like sendmail.
2987 =item file - The API file in that module, like sendmail-lib.pl. If missing, all API files are loaded.
2989 =item package - Perl package to place the module's functions and global variables in.
2991 If the original module name contains dashes, they will be replaced with _ in
2997 my ($mod, $file, $pkg) = @_;
2998 $pkg ||= $mod || "global";
2999 $pkg =~ s/[^A-Za-z0-9]/_/g;
3002 push(@files, $file);
3006 my %minfo = &get_module_info($mod);
3007 if ($minfo{'library'}) {
3008 @files = split(/\s+/, $minfo{'library'});
3011 @files = ( $mod."-lib.pl" );
3014 @files = grep { !$main::done_foreign_require{$pkg,$_} } @files;
3015 return 1 if (!@files);
3016 foreach my $f (@files) {
3017 $main::done_foreign_require{$pkg,$f}++;
3020 my $mdir = &module_root_directory($mod);
3021 @INC = &unique($mdir, @INC);
3022 -d $mdir || &error("Module $mod does not exist");
3023 if (!&get_module_name() && $mod) {
3026 my $old_fmn = $ENV{'FOREIGN_MODULE_NAME'};
3027 my $old_frd = $ENV{'FOREIGN_ROOT_DIRECTORY'};
3028 my $code = "package $pkg; ".
3029 "\$ENV{'FOREIGN_MODULE_NAME'} = '$mod'; ".
3030 "\$ENV{'FOREIGN_ROOT_DIRECTORY'} = '$root_directory'; ";
3031 foreach my $f (@files) {
3032 $code .= "do '$mdir/$f' || die \$@; ";
3035 if (defined($old_fmn)) {
3036 $ENV{'FOREIGN_MODULE_NAME'} = $old_fmn;
3039 delete($ENV{'FOREIGN_MODULE_NAME'});
3041 if (defined($old_frd)) {
3042 $ENV{'FOREIGN_ROOT_DIRECTORY'} = $old_frd;
3045 delete($ENV{'FOREIGN_ROOT_DIRECTORY'});
3048 if ($@) { &error("Require $mod/$files[0] failed : <pre>$@</pre>"); }
3052 =head2 foreign_call(module, function, [arg]*)
3054 Call a function in another module. The module parameter is the target module
3055 directory name, function is the perl sub to call, and the remaining parameters
3056 are the arguments. However, unless you need to call a function whose name
3057 is dynamic, it is better to use Perl's cross-module function call syntax
3058 like module::function(args).
3063 my $pkg = $_[0] || "global";
3064 $pkg =~ s/[^A-Za-z0-9]/_/g;
3065 my @args = @_[2 .. @_-1];
3066 $main::foreign_args = \@args;
3067 my @rv = eval <<EOF;
3069 &$_[1](\@{\$main::foreign_args});
3071 if ($@) { &error("$_[0]::$_[1] failed : $@"); }
3072 return wantarray ? @rv : $rv[0];
3075 =head2 foreign_config(module, [user-config])
3077 Get the configuration from another module, and return it as a hash. If the
3078 user-config parameter is set to 1, returns the Usermin user-level preferences
3079 for the current user instead.
3084 my ($mod, $uc) = @_;
3087 &read_file_cached("$root_directory/$mod/defaultuconfig", \%fconfig);
3088 &read_file_cached("$config_directory/$mod/uconfig", \%fconfig);
3089 &read_file_cached("$user_config_directory/$mod/config", \%fconfig);
3092 &read_file_cached("$config_directory/$mod/config", \%fconfig);
3097 =head2 foreign_installed(module, mode)
3099 Checks if the server for some module is installed, and possibly also checks
3100 if the module has been configured by Webmin.
3101 For mode 1, returns 2 if the server is installed and configured for use by
3102 Webmin, 1 if installed but not configured, or 0 otherwise.
3103 For mode 0, returns 1 if installed, 0 if not.
3104 If the module does not provide an install_check.pl script, assumes that
3105 the server is installed.
3108 sub foreign_installed
3110 my ($mod, $configured) = @_;
3111 if (defined($main::foreign_installed_cache{$mod,$configured})) {
3113 return $main::foreign_installed_cache{$mod,$configured};
3117 if (!&foreign_check($mod)) {
3122 my $mdir = &module_root_directory($mod);
3123 if (!-r "$mdir/install_check.pl") {
3124 # Not known, assume OK
3125 $rv = $configured ? 2 : 1;
3128 # Call function to check
3129 &foreign_require($mod, "install_check.pl");
3130 $rv = &foreign_call($mod, "is_installed", $configured);
3133 $main::foreign_installed_cache{$mod,$configured} = $rv;
3138 =head2 foreign_defined(module, function)
3140 Returns 1 if some function is defined in another module. In general, it is
3141 simpler to use the syntax &defined(module::function) instead.
3147 $pkg =~ s/[^A-Za-z0-9]/_/g;
3148 my $func = "${pkg}::$_[1]";
3149 return defined(&$func);
3152 =head2 get_system_hostname([short])
3154 Returns the hostname of this system. If the short parameter is set to 1,
3155 then the domain name is not prepended - otherwise, Webmin will attempt to get
3156 the fully qualified hostname, like foo.example.com.
3159 sub get_system_hostname
3162 if (!$main::get_system_hostname[$m]) {
3163 if ($gconfig{'os_type'} ne 'windows') {
3164 # Try some common Linux hostname files first
3166 if ($gconfig{'os_type'} eq 'redhat-linux') {
3168 &read_env_file("/etc/sysconfig/network", \%nc);
3169 if ($nc{'HOSTNAME'}) {
3170 $fromfile = $nc{'HOSTNAME'};
3173 elsif ($gconfig{'os_type'} eq 'debian-linux') {
3174 my $hn = &read_file_contents("/etc/hostname");
3180 elsif ($gconfig{'os_type'} eq 'open-linux') {
3181 my $hn = &read_file_contents("/etc/HOSTNAME");
3187 elsif ($gconfig{'os_type'} eq 'solaris') {
3188 my $hn = &read_file_contents("/etc/nodename");
3195 # If we found a hostname, use it if value
3196 if ($fromfile && ($m || $fromfile =~ /\./)) {
3198 $fromfile =~ s/\..*$//;
3200 $main::get_system_hostname[$m] = $fromfile;
3204 # Can use hostname command on Unix
3205 &execute_command("hostname", undef,
3206 \$main::get_system_hostname[$m], undef, 0, 1);
3207 chop($main::get_system_hostname[$m]);
3209 eval "use Sys::Hostname";
3211 $main::get_system_hostname[$m] = eval "hostname()";
3213 if ($@ || !$main::get_system_hostname[$m]) {
3214 $main::get_system_hostname[$m] = "UNKNOWN";
3217 elsif ($main::get_system_hostname[$m] !~ /\./ &&
3218 $gconfig{'os_type'} =~ /linux$/ &&
3219 !$gconfig{'no_hostname_f'} && !$_[0]) {
3220 # Try with -f flag to get fully qualified name
3222 my $ex = &execute_command("hostname -f", undef, \$flag,
3225 if ($ex || $flag eq "") {
3226 # -f not supported! We have probably set the
3227 # hostname to just '-f'. Fix the problem
3230 &execute_command("hostname ".
3231 quotemeta($main::get_system_hostname[$m]),
3232 undef, undef, undef, 0, 1);
3236 $main::get_system_hostname[$m] = $flag;
3241 # On Windows, try computername environment variable
3242 return $ENV{'computername'} if ($ENV{'computername'});
3243 return $ENV{'COMPUTERNAME'} if ($ENV{'COMPUTERNAME'});
3245 # Fall back to net name command
3246 my $out = `net name 2>&1`;
3247 if ($out =~ /\-+\r?\n(\S+)/) {
3248 $main::get_system_hostname[$m] = $1;
3251 $main::get_system_hostname[$m] = "windows";
3255 return $main::get_system_hostname[$m];
3258 =head2 get_webmin_version
3260 Returns the version of Webmin currently being run, such as 1.450.
3263 sub get_webmin_version
3265 if (!$get_webmin_version) {
3266 open(VERSION, "$root_directory/version") || return 0;
3267 ($get_webmin_version = <VERSION>) =~ tr/\r|\n//d;
3270 return $get_webmin_version;
3273 =head2 get_module_acl([user], [module], [no-rbac], [no-default])
3275 Returns a hash containing access control options for the given user and module.
3276 By default the current username and module name are used. If the no-rbac flag
3277 is given, the permissions will not be updated based on the user's RBAC role
3278 (as seen on Solaris). If the no-default flag is given, default permissions for
3279 the module will not be included.
3284 my $u = defined($_[0]) ? $_[0] : $base_remote_user;
3285 my $m = defined($_[1]) ? $_[1] : &get_module_name();
3286 my $mdir = &module_root_directory($m);
3289 # Read default ACL first, to be overridden by per-user settings
3290 &read_file_cached("$mdir/defaultacl", \%rv);
3292 # If this isn't a master admin user, apply the negative permissions
3293 # so that he doesn't un-expectedly gain access to new features
3295 &read_file_cached("$config_directory/$u.acl", \%gaccess);
3296 if ($gaccess{'negative'}) {
3297 &read_file_cached("$mdir/negativeacl", \%rv);
3301 if (!$_[2] && &supports_rbac($m) && &use_rbac_module_acl($u, $m)) {
3302 # RBAC overrides exist for this user in this module
3303 my $rbac = &get_rbac_module_acl(
3304 defined($_[0]) ? $_[0] : $remote_user, $m);
3305 foreach my $r (keys %$rbac) {
3306 $rv{$r} = $rbac->{$r};
3309 elsif ($gconfig{"risk_$u"} && $m) {
3310 # ACL is defined by user's risk level
3311 my $rf = $gconfig{"risk_$u"}.'.risk';
3312 &read_file_cached("$mdir/$rf", \%rv);
3314 my $sf = $gconfig{"skill_$u"}.'.skill';
3315 &read_file_cached("$mdir/$sf", \%rv);
3318 # Use normal Webmin ACL, if a user is set
3319 my $userdb = &get_userdb_string();
3321 if ($userdb && ($u ne $base_remote_user || $remote_user_proto)) {
3322 # Look for this user in the user/group DB, if one is defined
3323 # and if the user might be in the DB
3324 my ($dbh, $proto) = &connect_userdb($userdb);
3325 ref($dbh) || &error(&text('euserdbacl', $dbh));
3326 if ($proto eq "mysql" || $proto eq "postgresql") {
3327 # Find the user in the SQL DB
3328 my $cmd = $dbh->prepare(
3329 "select id from webmin_user where name = ?");
3330 $cmd && $cmd->execute($u) ||
3331 &error(&text('euserdbacl', $dbh->errstr));
3332 my ($id) = $cmd->fetchrow();
3333 $foundindb = 1 if (defined($id));
3336 # Fetch ACLs with SQL
3338 my $cmd = $dbh->prepare(
3339 "select attr,value from webmin_user_acl ".
3340 "where id = ? and module = ?");
3341 $cmd && $cmd->execute($id, $m) ||
3342 &error(&text('euserdbacl', $dbh->errstr));
3343 while(my ($a, $v) = $cmd->fetchrow()) {
3349 elsif ($proto eq "ldap") {
3350 # Fetch ACLs from LDAP
3353 &disconnect_userdb($userdb, $dbh);
3357 # Read from local files
3358 &read_file_cached("$config_directory/$m/$u.acl", \%rv);
3359 if ($remote_user ne $base_remote_user && !defined($_[0])) {
3361 "$config_directory/$m/$remote_user.acl",\%rv);
3365 if ($tconfig{'preload_functions'}) {
3366 &load_theme_library();
3368 if (defined(&theme_get_module_acl)) {
3369 %rv = &theme_get_module_acl($u, $m, \%rv);
3374 =head2 get_group_module_acl(group, [module], [no-default])
3376 Returns the ACL for a Webmin group, in an optional module (which defaults to
3377 the current module).
3380 sub get_group_module_acl
3383 my $m = defined($_[1]) ? $_[1] : &get_module_name();
3384 my $mdir = &module_root_directory($m);
3387 &read_file_cached("$mdir/defaultacl", \%rv);
3390 my $userdb = &get_userdb_string();
3393 # Look for this group in the user/group DB
3394 my ($dbh, $proto, $prefix, $args) = &connect_userdb($userdb);
3395 ref($dbh) || &error(&text('egroupdbacl', $dbh));
3396 if ($proto eq "mysql" || $proto eq "postgresql") {
3397 # Find the group in the SQL DB
3398 my $cmd = $dbh->prepare(
3399 "select id from webmin_group where name = ?");
3400 $cmd && $cmd->execute($g) ||
3401 &error(&text('egroupdbacl', $dbh->errstr));
3402 my ($id) = $cmd->fetchrow();
3403 $foundindb = 1 if (defined($id));
3406 # Fetch ACLs with SQL
3408 my $cmd = $dbh->prepare(
3409 "select attr,value from webmin_group_acl ".
3410 "where id = ? and module = ?");
3411 $cmd && $cmd->execute($id, $m) ||
3412 &error(&text('egroupdbacl', $dbh->errstr));
3413 while(my ($a, $v) = $cmd->fetchrow()) {
3419 elsif ($proto eq "ldap") {
3420 # Find group in LDAP
3421 my $rv = $dbh->search(
3423 filter => '(cn='.$g.')',
3425 if (!$rv || $rv->code) {
3426 &error(&text('egroupdbacl',
3427 $rv ? $rv->error : "Unknown error"));
3429 my ($group) = $rv->all_entries;
3431 # Find ACL sub-object for the module
3433 my $rv = $dbh->search(
3434 base => $group->dn(),
3435 filter => '(cn='.$m.')',
3437 if (!$rv || $rv->code) {
3438 &error(&text('egroupdbacl',
3439 $rv ? $rv->error : "Unknown error"));
3441 my ($acl) = $rv->all_entries;
3443 foreach my $av ($acl->get_value('webminAcl')) {
3444 my ($a, $v) = split(/=/, $av, 2);
3450 &disconnect_userdb($userdb, $dbh);
3453 # Read from local files
3454 &read_file_cached("$config_directory/$m/$g.gacl", \%rv);
3456 if (defined(&theme_get_module_acl)) {
3457 %rv = &theme_get_module_acl($g, $m, \%rv);
3462 =head2 save_module_acl(&acl, [user], [module], [never-update-group])
3464 Updates the acl hash for some user and module. The parameters are :
3466 =item acl - Hash reference for the new access control options, or undef to clear
3468 =item user - User to update, defaulting to the current user.
3470 =item module - Module to update, defaulting to the caller.
3472 =item never-update-group - Never update the user's group's ACL
3477 my $u = defined($_[1]) ? $_[1] : $base_remote_user;
3478 my $m = defined($_[2]) ? $_[2] : &get_module_name();
3479 if (!$_[3] && &foreign_check("acl")) {
3480 # Check if this user is a member of a group, and if he gets the
3481 # module from a group. If so, update its ACL as well
3482 &foreign_require("acl", "acl-lib.pl");
3484 foreach my $g (&acl::list_groups()) {
3485 if (&indexof($u, @{$g->{'members'}}) >= 0 &&
3486 &indexof($m, @{$g->{'modules'}}) >= 0) {
3492 &save_group_module_acl($_[0], $group->{'name'}, $m);
3496 my $userdb = &get_userdb_string();
3498 if ($userdb && ($u ne $base_remote_user || $remote_user_proto)) {
3499 # Look for this user in the user/group DB
3500 my ($dbh, $proto) = &connect_userdb($userdb);
3501 ref($dbh) || &error(&text('euserdbacl', $dbh));
3502 if ($proto eq "mysql" || $proto eq "postgresql") {
3503 # Find the user in the SQL DB
3504 my $cmd = $dbh->prepare(
3505 "select id from webmin_user where name = ?");
3506 $cmd && $cmd->execute($u) ||
3507 &error(&text('euserdbacl2', $dbh->errstr));
3508 my ($id) = $cmd->fetchrow();
3509 $foundindb = 1 if (defined($id));
3512 # Replace ACLs for user
3514 my $cmd = $dbh->prepare("delete from webmin_user_acl ".
3515 "where id = ? and module = ?");
3516 $cmd && $cmd->execute($id, $m) ||
3517 &error(&text('euserdbacl', $dbh->errstr));
3520 my $cmd = $dbh->prepare(
3521 "insert into webmin_user_acl ".
3522 "(id,module,attr,value) values (?,?,?,?)");
3523 $cmd || &error(&text('euserdbacl2',
3525 foreach my $a (keys %{$_[0]}) {
3526 $cmd->execute($id,$m,$a,$_[0]->{$a}) ||
3527 &error(&text('euserdbacl2',
3534 elsif ($proto eq "ldap") {
3535 # Update ACLs in LDAP
3538 &disconnect_userdb($userdb, $dbh);
3542 # Save ACL to local file
3543 if (!-d "$config_directory/$m") {
3544 mkdir("$config_directory/$m", 0755);
3547 &write_file("$config_directory/$m/$u.acl", $_[0]);
3550 &unlink_file("$config_directory/$m/$u.acl");
3555 =head2 save_group_module_acl(&acl, group, [module], [never-update-group])
3557 Updates the acl hash for some group and module. The parameters are :
3559 =item acl - Hash reference for the new access control options.
3561 =item group - Group name to update.
3563 =item module - Module to update, defaulting to the caller.
3565 =item never-update-group - Never update the parent group's ACL
3568 sub save_group_module_acl
3571 my $m = defined($_[2]) ? $_[2] : &get_module_name();
3572 if (!$_[3] && &foreign_check("acl")) {
3573 # Check if this group is a member of a group, and if it gets the
3574 # module from a group. If so, update the parent ACL as well
3575 &foreign_require("acl", "acl-lib.pl");
3577 foreach my $pg (&acl::list_groups()) {
3578 if (&indexof('@'.$g, @{$pg->{'members'}}) >= 0 &&
3579 &indexof($m, @{$pg->{'modules'}}) >= 0) {
3585 &save_group_module_acl($_[0], $group->{'name'}, $m);
3589 my $userdb = &get_userdb_string();
3592 # Look for this group in the user/group DB
3593 my ($dbh, $proto, $prefix, $args) = &connect_userdb($userdb);
3594 ref($dbh) || &error(&text('egroupdbacl', $dbh));
3595 if ($proto eq "mysql" || $proto eq "postgresql") {
3596 # Find the group in the SQL DB
3597 my $cmd = $dbh->prepare(
3598 "select id from webmin_group where name = ?");
3599 $cmd && $cmd->execute($g) ||
3600 &error(&text('egroupdbacl2', $dbh->errstr));
3601 my ($id) = $cmd->fetchrow();
3602 $foundindb = 1 if (defined($id));
3605 # Replace ACLs for group
3607 my $cmd = $dbh->prepare("delete from webmin_group_acl ".
3608 "where id = ? and module = ?");
3609 $cmd && $cmd->execute($id, $m) ||
3610 &error(&text('egroupdbacl', $dbh->errstr));
3613 my $cmd = $dbh->prepare(
3614 "insert into webmin_group_acl ".
3615 "(id,module,attr,value) values (?,?,?,?)");
3616 $cmd || &error(&text('egroupdbacl2',
3618 foreach my $a (keys %{$_[0]}) {
3619 $cmd->execute($id,$m,$a,$_[0]->{$a}) ||
3620 &error(&text('egroupdbacl2',
3627 elsif ($proto eq "ldap") {
3628 # Find the group in LDAP
3629 my $rv = $dbh->search(
3631 filter => '(cn='.$g.')',
3633 if (!$rv || $rv->code) {
3634 &error(&text('egroupdbacl',
3635 $rv ? $rv->error : "Unknown error"));
3637 my ($group) = $rv->all_entries;
3640 # Find the ACL sub-object for the module
3641 my $rv = $dbh->search(
3642 base => $group->dn(),
3643 filter => '(cn='.$m.')',
3645 if (!$rv || $rv->code) {
3646 &error(&text('egroupdbacl',
3647 $rv ? $rv->error : "Unknown error"));
3649 my ($acl) = $rv->all_entries;
3652 foreach my $a (keys %{$_[0]}) {
3653 push(@attrs, "webminAclEntry",
3654 $a."=".$_[0]->{$a});
3658 $rv = $dbh->modify($acl->dn(),
3659 replace => { @attrs });
3663 push(@attrs, "cn", $m,
3664 "objectClass", "webminAcl");
3665 $rv = $dbh->add("cn=".$m.",".$group->dn(),
3668 if (!$rv || $rv->code) {
3669 &error(&text('egroupdbacl2',
3670 $rv ? $rv->error : "Unknown error"));
3674 &disconnect_userdb($userdb, $dbh);
3678 # Save ACL to local file
3679 if (!-d "$config_directory/$m") {
3680 mkdir("$config_directory/$m", 0755);
3683 &write_file("$config_directory/$m/$g.gacl", $_[0]);
3686 &unlink_file("$config_directory/$m/$g.gacl");
3693 This function must be called by all Webmin CGI scripts, either directly or
3694 indirectly via a per-module lib.pl file. It performs a number of initialization
3695 and housekeeping tasks, such as working out the module name, checking that the
3696 current user has access to the module, and populating global variables. Some
3697 of the variables set include :
3699 =item $config_directory - Base Webmin config directory, typically /etc/webmin
3701 =item $var_directory - Base logs directory, typically /var/webmin
3703 =item %config - Per-module configuration.
3705 =item %gconfig - Global configuration.
3707 =item $scriptname - Base name of the current perl script.
3709 =item $module_name - The name of the current module.
3711 =item $module_config_directory - The config directory for this module.
3713 =item $module_config_file - The config file for this module.
3715 =item $module_root_directory - This module's code directory.
3717 =item $webmin_logfile - The detailed logfile for webmin.
3719 =item $remote_user - The actual username used to login to webmin.
3721 =item $base_remote_user - The username whose permissions are in effect.
3723 =item $current_theme - The theme currently in use.
3725 =item $root_directory - The first root directory of this webmin install.
3727 =item @root_directories - All root directories for this webmin install.
3732 # Record first process ID that called this, so we know when it exited to clean
3734 $main::initial_process_id ||= $$;
3736 # Configuration and spool directories
3737 if (!defined($ENV{'WEBMIN_CONFIG'})) {
3738 die "WEBMIN_CONFIG not set";
3740 $config_directory = $ENV{'WEBMIN_CONFIG'};
3741 if (!defined($ENV{'WEBMIN_VAR'})) {
3742 open(VARPATH, "$config_directory/var-path");
3743 chop($var_directory = <VARPATH>);
3747 $var_directory = $ENV{'WEBMIN_VAR'};
3749 $main::http_cache_directory = $ENV{'WEBMIN_VAR'}."/cache";
3750 $main::default_debug_log_file = $ENV{'WEBMIN_VAR'}."/webmin.debug";
3752 if ($ENV{'SESSION_ID'}) {
3753 # Hide this variable from called programs, but keep it for internal use
3754 $main::session_id = $ENV{'SESSION_ID'};
3755 delete($ENV{'SESSION_ID'});
3757 if ($ENV{'REMOTE_PASS'}) {
3758 # Hide the password too
3759 $main::remote_pass = $ENV{'REMOTE_PASS'};
3760 delete($ENV{'REMOTE_PASS'});
3763 if ($> == 0 && $< != 0 && !$ENV{'FOREIGN_MODULE_NAME'}) {
3764 # Looks like we are running setuid, but the real UID hasn't been set.
3765 # Do so now, so that executed programs don't get confused
3770 # Read the webmin global config file. This contains the OS type and version,
3771 # OS specific configuration and global options such as proxy servers
3772 $config_file = "$config_directory/config";
3774 &read_file_cached($config_file, \%gconfig);
3775 $null_file = $gconfig{'os_type'} eq 'windows' ? "NUL" : "/dev/null";
3776 $path_separator = $gconfig{'os_type'} eq 'windows' ? ';' : ':';
3778 # If debugging is enabled, open the debug log
3779 if ($gconfig{'debug_enabled'} && !$main::opened_debug_log++) {
3780 my $dlog = $gconfig{'debug_file'} || $main::default_debug_log_file;
3781 if ($gconfig{'debug_size'}) {
3782 my @st = stat($dlog);
3783 if ($st[7] > $gconfig{'debug_size'}) {
3784 rename($dlog, $dlog.".0");
3787 open(main::DEBUGLOG, ">>$dlog");
3788 $main::opened_debug_log = 1;
3790 if ($gconfig{'debug_what_start'}) {
3791 my $script_name = $0 =~ /([^\/]+)$/ ? $1 : '-';
3792 $main::debug_log_start_time = time();
3793 &webmin_debug_log("START", "script=$script_name");
3794 $main::debug_log_start_module = $module_name;
3798 # Set PATH and LD_LIBRARY_PATH
3799 if ($gconfig{'path'}) {
3800 if ($gconfig{'syspath'}) {
3802 $ENV{'PATH'} = $gconfig{'path'};
3806 $ENV{'PATH'} = $gconfig{'path'}.$path_separator.$ENV{'PATH'};
3809 $ENV{$gconfig{'ld_env'}} = $gconfig{'ld_path'} if ($gconfig{'ld_env'});
3811 # Set http_proxy and ftp_proxy environment variables, based on Webmin settings
3812 if ($gconfig{'http_proxy'}) {
3813 $ENV{'http_proxy'} = $gconfig{'http_proxy'};
3815 if ($gconfig{'ftp_proxy'}) {
3816 $ENV{'ftp_proxy'} = $gconfig{'ftp_proxy'};
3818 if ($gconfig{'noproxy'}) {
3819 $ENV{'no_proxy'} = $gconfig{'noproxy'};
3822 # Find all root directories
3824 if (&get_miniserv_config(\%miniserv)) {
3825 @root_directories = ( $miniserv{'root'} );
3826 for($i=0; defined($miniserv{"extraroot_$i"}); $i++) {
3827 push(@root_directories, $miniserv{"extraroot_$i"});
3831 # Work out which module we are in, and read the per-module config file
3832 $0 =~ s/\\/\//g; # Force consistent path on Windows
3833 if (defined($ENV{'FOREIGN_MODULE_NAME'})) {
3834 # In a foreign call - use the module name given
3835 $root_directory = $ENV{'FOREIGN_ROOT_DIRECTORY'};
3836 $module_name = $ENV{'FOREIGN_MODULE_NAME'};
3837 @root_directories = ( $root_directory ) if (!@root_directories);
3839 elsif ($ENV{'SCRIPT_NAME'}) {
3840 my $sn = $ENV{'SCRIPT_NAME'};
3841 $sn =~ s/^$gconfig{'webprefix'}//
3842 if (!$gconfig{'webprefixnoredir'});
3843 if ($sn =~ /^\/([^\/]+)\//) {
3844 # Get module name from CGI path
3847 if ($ENV{'SERVER_ROOT'}) {
3848 $root_directory = $ENV{'SERVER_ROOT'};
3850 elsif ($ENV{'SCRIPT_FILENAME'}) {
3851 $root_directory = $ENV{'SCRIPT_FILENAME'};
3852 $root_directory =~ s/$sn$//;
3854 @root_directories = ( $root_directory ) if (!@root_directories);
3857 # Get root directory from miniserv.conf, and deduce module name from $0
3858 $root_directory = $root_directories[0];
3860 foreach my $r (@root_directories) {
3861 if ($0 =~ /^$r\/([^\/]+)\/[^\/]+$/i) {
3862 # Under a module directory
3867 elsif ($0 =~ /^$root_directory\/[^\/]+$/i) {
3873 &error("Script was not run with full path (failed to find $0 under $root_directory)") if (!$rok);
3876 # Work out of this is a web, command line or cron job
3877 if (!$main::webmin_script_type) {
3878 if ($ENV{'SCRIPT_NAME'}) {
3880 $main::webmin_script_type = 'web';
3883 # Cron jobs have no TTY
3884 if ($gconfig{'os_type'} eq 'windows' ||
3885 open(DEVTTY, ">/dev/tty")) {
3886 $main::webmin_script_type = 'cmd';
3890 $main::webmin_script_type = 'cron';
3895 # Set the umask based on config
3896 if ($gconfig{'umask'} && !$main::umask_already++) {
3897 umask(oct($gconfig{'umask'}));
3900 # If this is a cron job or other background task, set the nice level
3901 if (!$main::nice_already && $main::webmin_script_type eq 'cron') {
3903 if ($gconfig{'nice'}) {
3904 eval 'POSIX::nice($gconfig{\'nice\'});';
3907 # Set IO scheduling class and priority
3908 if ($gconfig{'sclass'} ne '' || $gconfig{'sprio'} ne '') {
3910 $cmd .= " -c ".quotemeta($gconfig{'sclass'})
3911 if ($gconfig{'sclass'} ne '');
3912 $cmd .= " -n ".quotemeta($gconfig{'sprio'})
3913 if ($gconfig{'sprio'} ne '');
3915 &execute_command("$cmd >/dev/null 2>&1");
3918 $main::nice_already++;
3921 my $u = $ENV{'BASE_REMOTE_USER'} || $ENV{'REMOTE_USER'};
3922 $base_remote_user = $u;
3923 $remote_user = $ENV{'REMOTE_USER'};
3925 # Work out if user is definitely in the DB, and if so get his attrs
3926 $remote_user_proto = $ENV{"REMOTE_USER_PROTO"};
3927 %remote_user_attrs = ( );
3928 if ($remote_user_proto) {
3929 my $userdb = &get_userdb_string();
3930 my ($dbh, $proto) = $userdb ? &connect_userdb($userdb) : ( );
3932 if ($proto eq "mysql" || $proto eq "postgresql") {
3933 # Read attrs from SQL
3934 my $cmd = $dbh->prepare("select webmin_user_attr.attr,webmin_user_attr.value from webmin_user_attr,webmin_user where webmin_user_attr.id = webmin_user.id and webmin_user.name = ?");
3935 if ($cmd && $cmd->execute($base_remote_user)) {
3936 while(my ($attr, $value) = $cmd->fetchrow()) {
3937 $remote_user_attrs{$attr} = $value;
3942 elsif ($proto eq "ldap") {
3943 # XXX read attrs from LDAP
3945 &disconnect_userdb($userdb, $dbh);
3950 # Find and load the configuration file for this module
3951 my (@ruinfo, $rgroup);
3952 $module_config_directory = "$config_directory/$module_name";
3953 if (&get_product_name() eq "usermin" &&
3954 -r "$module_config_directory/config.$remote_user") {
3956 $module_config_file = "$module_config_directory/config.$remote_user";
3958 elsif (&get_product_name() eq "usermin" &&
3959 (@ruinfo = getpwnam($remote_user)) &&
3960 ($rgroup = getgrgid($ruinfo[3])) &&
3961 -r "$module_config_directory/config.\@$rgroup") {
3962 # Based on group name
3963 $module_config_file = "$module_config_directory/config.\@$rgroup";
3967 $module_config_file = "$module_config_directory/config";
3970 &read_file_cached($module_config_file, \%config);
3972 # Fix up windows-specific substitutions in values
3973 foreach my $k (keys %config) {
3974 if ($config{$k} =~ /\$\{systemroot\}/) {
3975 my $root = &get_windows_root();
3976 $config{$k} =~ s/\$\{systemroot\}/$root/g;
3981 # Record the initial module
3982 $main::initial_module_name ||= $module_name;
3984 # Set some useful variables
3986 $current_themes = $ENV{'MOBILE_DEVICE'} && defined($gconfig{'mobile_theme'}) ?
3987 $gconfig{'mobile_theme'} :
3988 defined($remote_user_attrs{'theme'}) ?
3989 $remote_user_attrs{'theme'} :
3990 defined($gconfig{'theme_'.$remote_user}) ?
3991 $gconfig{'theme_'.$remote_user} :
3992 defined($gconfig{'theme_'.$base_remote_user}) ?
3993 $gconfig{'theme_'.$base_remote_user} :
3995 @current_themes = split(/\s+/, $current_themes);
3996 $current_theme = $current_themes[0];
3997 @theme_root_directories = map { "$root_directory/$_" } @current_themes;
3998 $theme_root_directory = $theme_root_directories[0];
3999 @theme_configs = ( );
4000 foreach my $troot (@theme_root_directories) {
4002 &read_file_cached("$troot/config", \%onetconfig);
4003 &read_file_cached("$troot/config", \%tconfig);
4004 push(@theme_configs, \%onetconfig);
4006 $tb = defined($tconfig{'cs_header'}) ? "bgcolor=#$tconfig{'cs_header'}" :
4007 defined($gconfig{'cs_header'}) ? "bgcolor=#$gconfig{'cs_header'}" :
4009 $cb = defined($tconfig{'cs_table'}) ? "bgcolor=#$tconfig{'cs_table'}" :
4010 defined($gconfig{'cs_table'}) ? "bgcolor=#$gconfig{'cs_table'}" :
4012 $tb .= ' '.$tconfig{'tb'} if ($tconfig{'tb'});
4013 $cb .= ' '.$tconfig{'cb'} if ($tconfig{'cb'});
4014 if ($tconfig{'preload_functions'}) {
4015 # Force load of theme functions right now, if requested
4016 &load_theme_library();
4018 if ($tconfig{'oofunctions'} && !$main::loaded_theme_oo_library++) {
4019 # Load the theme's Webmin:: package classes
4020 do "$theme_root_directory/$tconfig{'oofunctions'}";
4025 $webmin_logfile = $gconfig{'webmin_log'} ? $gconfig{'webmin_log'}
4026 : "$var_directory/webmin.log";
4028 # Load language strings into %text
4029 my @langs = &list_languages();
4031 if ($gconfig{'acceptlang'}) {
4032 foreach my $a (split(/,/, $ENV{'HTTP_ACCEPT_LANGUAGE'})) {
4033 my ($al) = grep { $_->{'lang'} eq $a } @langs;
4035 $accepted_lang = $al->{'lang'};
4040 $current_lang = $force_lang ? $force_lang :
4041 $accepted_lang ? $accepted_lang :
4042 $remote_user_attrs{'lang'} ? $remote_user_attrs{'lang'} :
4043 $gconfig{"lang_$remote_user"} ? $gconfig{"lang_$remote_user"} :
4044 $gconfig{"lang_$base_remote_user"} ? $gconfig{"lang_$base_remote_user"} :
4045 $gconfig{"lang"} ? $gconfig{"lang"} : $default_lang;
4046 foreach my $l (@langs) {
4047 $current_lang_info = $l if ($l->{'lang'} eq $current_lang);
4049 @lang_order_list = &unique($default_lang,
4050 split(/:/, $current_lang_info->{'fallback'}),
4052 %text = &load_language($module_name);
4053 %text || &error("Failed to determine Webmin root from SERVER_ROOT, SCRIPT_FILENAME or the full command line");
4055 # Get the %module_info for this module
4057 my ($mi) = grep { $_->{'dir'} eq $module_name }
4058 &get_all_module_infos(2);
4059 %module_info = %$mi;
4060 $module_root_directory = &module_root_directory($module_name);
4063 if ($module_name && !$main::no_acl_check &&
4064 !defined($ENV{'FOREIGN_MODULE_NAME'})) {
4065 # Check if the HTTP user can access this module
4066 if (!&foreign_available($module_name)) {
4067 if (!&foreign_check($module_name)) {
4068 &error(&text('emodulecheck',
4069 "<i>$module_info{'desc'}</i>"));
4072 &error(&text('emodule', "<i>$u</i>",
4073 "<i>$module_info{'desc'}</i>"));
4076 $main::no_acl_check++;
4079 # Check the Referer: header for nasty redirects
4080 my @referers = split(/\s+/, $gconfig{'referers'});
4082 if ($ENV{'HTTP_REFERER'} =~/^(http|https|ftp):\/\/([^:\/]+:[^@\/]+@)?([^\/:@]+)/) {
4085 my $http_host = $ENV{'HTTP_HOST'};
4086 $http_host =~ s/:\d+$//;
4087 my $unsafe_index = $unsafe_index_cgi ||
4088 &get_module_variable('$unsafe_index_cgi');
4090 ($ENV{'SCRIPT_NAME'} !~ /^\/(index.cgi)?$/ || $unsafe_index) &&
4091 ($ENV{'SCRIPT_NAME'} !~ /^\/([a-z0-9\_\-]+)\/(index.cgi)?$/i ||
4093 $0 !~ /(session_login|pam_login)\.cgi$/ && !$gconfig{'referer'} &&
4094 $ENV{'MINISERV_CONFIG'} && !$main::no_referers_check &&
4095 $ENV{'HTTP_USER_AGENT'} !~ /^Webmin/i &&
4096 ($referer_site && $referer_site ne $http_host &&
4097 &indexof($referer_site, @referers) < 0 ||
4098 !$referer_site && $gconfig{'referers_none'}) &&
4099 !$trust_unknown_referers &&
4100 !&get_module_variable('$trust_unknown_referers')) {
4101 # Looks like a link from elsewhere .. show an error
4102 &header($text{'referer_title'}, "", undef, 0, 1, 1);
4104 $prot = lc($ENV{'HTTPS'}) eq 'on' ? "https" : "http";
4105 my $url = "<tt>".&html_escape("$prot://$ENV{'HTTP_HOST'}$ENV{'REQUEST_URI'}")."</tt>";
4106 if ($referer_site) {
4108 print &text('referer_warn',
4109 "<tt>".&html_escape($ENV{'HTTP_REFERER'})."</tt>", $url);
4111 print &text('referer_fix1', &html_escape($http_host)),"<p>\n";
4112 print &text('referer_fix2', &html_escape($http_host)),"<p>\n";
4115 # No referer info given
4116 print &text('referer_warn_unknown', $url),"<p>\n";
4117 print &text('referer_fix1u'),"<p>\n";
4118 print &text('referer_fix2u'),"<p>\n";
4122 &footer("/", $text{'index'});
4125 $main::no_referers_check++;
4126 $main::completed_referers_check++;
4128 # Call theme post-init
4129 if (defined(&theme_post_init_config)) {
4130 &theme_post_init_config(@_);
4133 # Record that we have done the calling library in this package
4134 my ($callpkg, $lib) = caller();
4136 $main::done_foreign_require{$callpkg,$lib} = 1;
4138 # If a licence checking is enabled, do it now
4139 if ($gconfig{'licence_module'} && !$main::done_licence_module_check &&
4140 &foreign_check($gconfig{'licence_module'}) &&
4141 -r "$root_directory/$gconfig{'licence_module'}/licence_check.pl") {
4142 my $oldpwd = &get_current_dir();
4143 $main::done_licence_module_check++;
4144 $main::licence_module = $gconfig{'licence_module'};
4145 &foreign_require($main::licence_module, "licence_check.pl");
4146 ($main::licence_status, $main::licence_message) =
4147 &foreign_call($main::licence_module, "check_licence");
4151 # Export global variables to caller
4152 if ($main::export_to_caller) {
4153 foreach my $v ('$config_file', '%gconfig', '$null_file',
4154 '$path_separator', '@root_directories',
4155 '$root_directory', '$module_name',
4156 '$base_remote_user', '$remote_user',
4157 '$remote_user_proto', '%remote_user_attrs',
4158 '$module_config_directory', '$module_config_file',
4159 '%config', '@current_themes', '$current_theme',
4160 '@theme_root_directories', '$theme_root_directory',
4161 '%tconfig','@theme_configs', '$tb', '$cb', '$scriptname',
4162 '$webmin_logfile', '$current_lang',
4163 '$current_lang_info', '@lang_order_list', '%text',
4164 '%module_info', '$module_root_directory') {
4165 my ($vt, $vn) = split('', $v, 2);
4166 eval "${vt}${callpkg}::${vn} = ${vt}${vn}";
4173 =head2 load_language([module], [directory])
4175 Returns a hashtable mapping text codes to strings in the appropriate language,
4176 based on the $current_lang global variable, which is in turn set based on
4177 the Webmin user's selection. The optional module parameter tells the function
4178 which module to load strings for, and defaults to the calling module. The
4179 optional directory parameter can be used to load strings from a directory
4182 In regular module development you will never need to call this function
4183 directly, as init_config calls it for you, and places the module's strings
4184 into the %text hash.
4190 my $root = $root_directory;
4191 my $ol = $gconfig{'overlang'};
4192 my ($dir) = ($_[1] || "lang");
4194 # Read global lang files
4195 foreach my $o (@lang_order_list) {
4196 my $ok = &read_file_cached("$root/$dir/$o", \%text);
4197 return () if (!$ok && $o eq $default_lang);
4200 foreach my $o (@lang_order_list) {
4201 &read_file_cached("$root/$ol/$o", \%text);
4204 &read_file_cached("$config_directory/custom-lang", \%text);
4207 # Read module's lang files
4208 my $mdir = &module_root_directory($_[0]);
4209 foreach my $o (@lang_order_list) {
4210 &read_file_cached("$mdir/$dir/$o", \%text);
4213 foreach $o (@lang_order_list) {
4214 &read_file_cached("$mdir/$ol/$o", \%text);
4217 &read_file_cached("$config_directory/$_[0]/custom-lang", \%text);
4219 foreach $k (keys %text) {
4220 $text{$k} =~ s/\$(\{([^\}]+)\}|([A-Za-z0-9\.\-\_]+))/text_subs($2 || $3,\%text)/ge;
4223 if (defined(&theme_load_language)) {
4224 &theme_load_language(\%text, $_[0]);
4229 =head2 text_subs(string)
4231 Used internally by load_language to expand $code substitutions in language
4237 if (substr($_[0], 0, 8) eq "include:") {
4240 open(INCLUDE, substr($_[0], 8));
4248 my $t = $_[1]->{$_[0]};
4249 return defined($t) ? $t : '$'.$_[0];
4253 =head2 text(message, [substitute]+)
4255 Returns a translated message from %text, but with $1, $2, etc.. replaced with
4256 the substitute parameters. This makes it easy to use strings with placeholders
4257 that get replaced with programmatically generated text. For example :
4259 print &text('index_hello', $remote_user),"<p>\n";
4264 my $t = &get_module_variable('%text', 1);
4265 my $rv = exists($t->{$_[0]}) ? $t->{$_[0]} : $text{$_[0]};
4266 for(my $i=1; $i<@_; $i++) {
4267 $rv =~ s/\$$i/$_[$i]/g;
4272 =head2 encode_base64(string)
4274 Encodes a string into base64 format, for use in MIME email or HTTP
4275 authorization headers.
4281 pos($_[0]) = 0; # ensure start at the beginning
4282 while ($_[0] =~ /(.{1,57})/gs) {
4283 $res .= substr(pack('u57', $1), 1)."\n";
4286 $res =~ tr|\` -_|AA-Za-z0-9+/|;
4287 my $padding = (3 - length($_[0]) % 3) % 3;
4288 $res =~ s/.{$padding}$/'=' x $padding/e if ($padding);
4292 =head2 decode_base64(string)
4294 Converts a base64-encoded string into plain text. The opposite of encode_base64.
4301 $str =~ tr|A-Za-z0-9+=/||cd; # remove non-base64 chars
4302 if (length($str) % 4) {
4305 $str =~ s/=+$//; # remove padding
4306 $str =~ tr|A-Za-z0-9+/| -_|; # convert to uuencoded format
4307 while ($str =~ /(.{1,60})/gs) {
4308 my $len = chr(32 + length($1)*3/4); # compute length byte
4309 $res .= unpack("u", $len . $1 ); # uudecode
4314 =head2 get_module_info(module, [noclone], [forcache])
4316 Returns a hash containg details of the given module. Some useful keys are :
4318 =item dir - The module directory, like sendmail.
4320 =item desc - Human-readable description, in the current users' language.
4322 =item version - Optional module version number.
4324 =item os_support - List of supported operating systems and versions.
4326 =item category - Category on Webmin's left menu, like net.
4331 return () if ($_[0] =~ /^\./);
4332 my (%rv, $clone, $o);
4333 my $mdir = &module_root_directory($_[0]);
4334 &read_file_cached("$mdir/module.info", \%rv) || return ();
4336 foreach $o (@lang_order_list) {
4337 $rv{"desc"} = $rv{"desc_$o"} if ($rv{"desc_$o"});
4338 $rv{"longdesc"} = $rv{"longdesc_$o"} if ($rv{"longdesc_$o"});
4340 if ($clone && !$_[1] && $config_directory) {
4341 $rv{'clone'} = $rv{'desc'};
4342 &read_file("$config_directory/$_[0]/clone", \%rv);
4345 my %module_categories;
4346 &read_file_cached("$config_directory/webmin.cats", \%module_categories);
4347 my $pn = &get_product_name();
4348 if (defined($rv{'category_'.$pn})) {
4349 # Can override category for webmin/usermin
4350 $rv{'category'} = $rv{'category_'.$pn};
4352 $rv{'realcategory'} = $rv{'category'};
4353 $rv{'category'} = $module_categories{$_[0]}
4354 if (defined($module_categories{$_[0]}));
4356 # Apply description overrides
4357 $rv{'realdesc'} = $rv{'desc'};
4359 &read_file_cached("$config_directory/webmin.descs", \%descs);
4360 if ($descs{$_[0]." ".$current_lang}) {
4361 $rv{'desc'} = $descs{$_[0]." ".$current_lang};
4363 elsif ($descs{$_[0]}) {
4364 $rv{'desc'} = $descs{$_[0]};
4368 # Apply per-user description overridde
4369 my %gaccess = &get_module_acl(undef, "");
4370 if ($gaccess{'desc_'.$_[0]}) {
4371 $rv{'desc'} = $gaccess{'desc_'.$_[0]};
4375 if ($rv{'longdesc'}) {
4376 # All standard modules have an index.cgi
4377 $rv{'index_link'} = 'index.cgi';
4380 # Call theme-specific override function
4381 if (defined(&theme_get_module_info)) {
4382 %rv = &theme_get_module_info(\%rv, $_[0], $_[1], $_[2]);
4388 =head2 get_all_module_infos(cachemode)
4390 Returns a list contains the information on all modules in this webmin
4391 install, including clones. Uses caching to reduce the number of module.info
4392 files that need to be read. Each element of the array is a hash reference
4393 in the same format as returned by get_module_info. The cache mode flag can be :
4394 0 = read and write, 1 = don't read or write, 2 = read only
4397 sub get_all_module_infos
4401 # Is the cache out of date? (ie. have any of the root's changed?)
4402 my $cache_file = "$config_directory/module.infos.cache";
4404 if (&read_file_cached($cache_file, \%cache)) {
4405 foreach my $r (@root_directories) {
4407 if ($st[9] != $cache{'mtime_'.$r}) {
4417 if ($_[0] != 1 && !$changed && $cache{'lang'} eq $current_lang) {
4418 # Can use existing module.info cache
4420 foreach my $k (keys %cache) {
4421 if ($k =~ /^(\S+) (\S+)$/) {
4422 $mods{$1}->{$2} = $cache{$k};
4425 @rv = map { $mods{$_} } (keys %mods) if (%mods);
4428 # Need to rebuild cache
4430 foreach my $r (@root_directories) {
4432 foreach my $m (readdir(DIR)) {
4433 next if ($m =~ /^(config-|\.)/ || $m =~ /\.(cgi|pl)$/);
4434 my %minfo = &get_module_info($m, 0, 1);
4435 next if (!%minfo || !$minfo{'dir'});
4437 foreach $k (keys %minfo) {
4438 $cache{"${m} ${k}"} = $minfo{$k};
4443 $cache{'mtime_'.$r} = $st[9];
4445 $cache{'lang'} = $current_lang;
4446 &write_file($cache_file, \%cache) if (!$_[0] && $< == 0 && $> == 0);
4449 # Override descriptions for modules for current user
4450 my %gaccess = &get_module_acl(undef, "");
4451 foreach my $m (@rv) {
4452 if ($gaccess{"desc_".$m->{'dir'}}) {
4453 $m->{'desc'} = $gaccess{"desc_".$m->{'dir'}};
4457 # Apply installed flags
4459 &read_file_cached("$config_directory/installed.cache", \%installed);
4460 foreach my $m (@rv) {
4461 $m->{'installed'} = $installed{$m->{'dir'}};
4467 =head2 get_theme_info(theme)
4469 Returns a hash containing a theme's details, taken from it's theme.info file.
4470 Some useful keys are :
4472 =item dir - The theme directory, like blue-theme.
4474 =item desc - Human-readable description, in the current users' language.
4476 =item version - Optional module version number.
4478 =item os_support - List of supported operating systems and versions.
4483 return () if ($_[0] =~ /^\./);
4485 my $tdir = &module_root_directory($_[0]);
4486 &read_file("$tdir/theme.info", \%rv) || return ();
4487 foreach my $o (@lang_order_list) {
4488 $rv{"desc"} = $rv{"desc_$o"} if ($rv{"desc_$o"});
4494 =head2 list_languages
4496 Returns an array of supported languages, taken from Webmin's os_list.txt file.
4497 Each is a hash reference with the following keys :
4499 =item lang - The short language code, like es for Spanish.
4501 =item desc - A human-readable description, in English.
4503 =item charset - An optional character set to use when displaying the language.
4505 =item titles - Set to 1 only if Webmin has title images for the language.
4507 =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.
4512 if (!@main::list_languages_cache) {
4515 open(LANG, "$root_directory/lang_list.txt");
4517 if (/^(\S+)\s+(.*)/) {
4518 my $l = { 'desc' => $2 };
4519 foreach $o (split(/,/, $1)) {
4520 if ($o =~ /^([^=]+)=(.*)$/) {
4524 $l->{'index'} = scalar(@rv);
4525 push(@main::list_languages_cache, $l);
4529 @main::list_languages_cache = sort { $a->{'desc'} cmp $b->{'desc'} }
4530 @main::list_languages_cache;
4532 return @main::list_languages_cache;
4535 =head2 read_env_file(file, &hash)
4537 Similar to Webmin's read_file function, but handles files containing shell
4538 environment variables formatted like :
4543 The file parameter is the full path to the file to read, and hash a Perl hash
4544 ref to read names and values into.
4550 &open_readfile(FILE, $_[0]) || return 0;
4553 if (/^\s*(export\s*)?([A-Za-z0-9_\.]+)\s*=\s*"(.*)"/i ||
4554 /^\s*(export\s*)?([A-Za-z0-9_\.]+)\s*=\s*'(.*)'/i ||
4555 /^\s*(export\s*)?([A-Za-z0-9_\.]+)\s*=\s*(.*)/i) {
4563 =head2 write_env_file(file, &hash, [export])
4565 Writes out a hash to a file in name='value' format, suitable for use in a shell
4566 script. The parameters are :
4568 =item file - Full path for a file to write to
4570 =item hash - Hash reference of names and values to write.
4572 =item export - If set to 1, preceed each variable setting with the word 'export'.
4577 my $exp = $_[2] ? "export " : "";
4578 &open_tempfile(FILE, ">$_[0]");
4579 foreach my $k (keys %{$_[1]}) {
4580 my $v = $_[1]->{$k};
4581 if ($v =~ /^\S+$/) {
4582 &print_tempfile(FILE, "$exp$k=$v\n");
4585 &print_tempfile(FILE, "$exp$k=\"$v\"\n");
4588 &close_tempfile(FILE);
4591 =head2 lock_file(filename, [readonly], [forcefile])
4593 Lock a file for exclusive access. If the file is already locked, spin
4594 until it is freed. Uses a .lock file, which is not 100% reliable, but seems
4595 to work OK. The parameters are :
4597 =item filename - File or directory to lock.
4599 =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.
4601 =item forcefile - Force the file to be considered as a real file and not a symlink for Webmin actions logging purposes.
4606 my $realfile = &translate_filename($_[0]);
4607 return 0 if (!$_[0] || defined($main::locked_file_list{$realfile}));
4608 my $no_lock = !&can_lock_file($realfile);
4609 my $lock_tries_count = 0;
4612 if (!$no_lock && open(LOCKING, "$realfile.lock")) {
4617 if ($no_lock || !$pid || !kill(0, $pid) || $pid == $$) {
4620 # Create the .lock file
4621 open(LOCKING, ">$realfile.lock") || return 0;
4622 my $lck = eval "flock(LOCKING, 2+4)";
4624 # Lock of lock file failed! Wait till later
4627 print LOCKING $$,"\n";
4628 eval "flock(LOCKING, 8)";
4631 $main::locked_file_list{$realfile} = int($_[1]);
4632 push(@main::temporary_files, "$realfile.lock");
4633 if (($gconfig{'logfiles'} || $gconfig{'logfullfiles'}) &&
4634 !&get_module_variable('$no_log_file_changes') &&
4636 # Grab a copy of this file for later diffing
4638 $main::locked_file_data{$realfile} = undef;
4640 $main::locked_file_type{$realfile} = 1;
4641 $main::locked_file_data{$realfile} = '';
4643 elsif (!$_[2] && ($lnk = readlink($realfile))) {
4644 $main::locked_file_type{$realfile} = 2;
4645 $main::locked_file_data{$realfile} = $lnk;
4647 elsif (open(ORIGFILE, $realfile)) {
4648 $main::locked_file_type{$realfile} = 0;
4649 $main::locked_file_data{$realfile} = '';
4652 $main::locked_file_data{$realfile} .=$_;
4661 if ($lock_tries_count++ > 5*60) {
4662 # Give up after 5 minutes
4663 &error(&text('elock_tries', "<tt>$realfile</tt>", 5));
4669 =head2 unlock_file(filename)
4671 Release a lock on a file taken out by lock_file. If Webmin actions logging of
4672 file changes is enabled, then at unlock file a diff will be taken between the
4673 old and new contents, and stored under /var/webmin/diffs when webmin_log is
4674 called. This can then be viewed in the Webmin Actions Log module.
4679 my $realfile = &translate_filename($_[0]);
4680 return if (!$_[0] || !defined($main::locked_file_list{$realfile}));
4681 unlink("$realfile.lock") if (&can_lock_file($realfile));
4682 delete($main::locked_file_list{$realfile});
4683 if (exists($main::locked_file_data{$realfile})) {
4684 # Diff the new file with the old
4686 my $lnk = readlink($realfile);
4687 my $type = -d _ ? 1 : $lnk ? 2 : 0;
4688 my $oldtype = $main::locked_file_type{$realfile};
4689 my $new = !defined($main::locked_file_data{$realfile});
4690 if ($new && !-e _) {
4691 # file doesn't exist, and never did! do nothing ..
4693 elsif ($new && $type == 1 || !$new && $oldtype == 1) {
4694 # is (or was) a directory ..
4695 if (-d _ && !defined($main::locked_file_data{$realfile})) {
4696 push(@main::locked_file_diff,
4697 { 'type' => 'mkdir', 'object' => $realfile });
4699 elsif (!-d _ && defined($main::locked_file_data{$realfile})) {
4700 push(@main::locked_file_diff,
4701 { 'type' => 'rmdir', 'object' => $realfile });
4704 elsif ($new && $type == 2 || !$new && $oldtype == 2) {
4705 # is (or was) a symlink ..
4706 if ($lnk && !defined($main::locked_file_data{$realfile})) {
4707 push(@main::locked_file_diff,
4708 { 'type' => 'symlink', 'object' => $realfile,
4711 elsif (!$lnk && defined($main::locked_file_data{$realfile})) {
4712 push(@main::locked_file_diff,
4713 { 'type' => 'unsymlink', 'object' => $realfile,
4714 'data' => $main::locked_file_data{$realfile} });
4716 elsif ($lnk ne $main::locked_file_data{$realfile}) {
4717 push(@main::locked_file_diff,
4718 { 'type' => 'resymlink', 'object' => $realfile,
4723 # is a file, or has changed type?!
4724 my ($diff, $delete_file);
4725 my $type = "modify";
4727 open(NEWFILE, ">$realfile");
4732 if (!defined($main::locked_file_data{$realfile})) {
4735 open(ORIGFILE, ">$realfile.webminorig");
4736 print ORIGFILE $main::locked_file_data{$realfile};
4738 $diff = &backquote_command(
4739 "diff ".quotemeta("$realfile.webminorig")." ".
4740 quotemeta($realfile)." 2>/dev/null");
4741 push(@main::locked_file_diff,
4742 { 'type' => $type, 'object' => $realfile,
4743 'data' => $diff } ) if ($diff);
4744 unlink("$realfile.webminorig");
4745 unlink($realfile) if ($delete_file);
4748 if ($gconfig{'logfullfiles'}) {
4749 # Add file details to list of those to fully log
4750 $main::orig_file_data{$realfile} ||=
4751 $main::locked_file_data{$realfile};
4752 $main::orig_file_type{$realfile} ||=
4753 $main::locked_file_type{$realfile};
4756 delete($main::locked_file_data{$realfile});
4757 delete($main::locked_file_type{$realfile});
4761 =head2 test_lock(file)
4763 Returns 1 if some file is currently locked, 0 if not.
4768 my $realfile = &translate_filename($_[0]);
4769 return 0 if (!$_[0]);
4770 return 1 if (defined($main::locked_file_list{$realfile}));
4771 return 0 if (!&can_lock_file($realfile));
4773 if (open(LOCKING, "$realfile.lock")) {
4778 return $pid && kill(0, $pid);
4781 =head2 unlock_all_files
4783 Unlocks all files locked by the current script.
4786 sub unlock_all_files
4788 foreach $f (keys %main::locked_file_list) {
4793 =head2 can_lock_file(file)
4795 Returns 1 if some file should be locked, based on the settings in the
4796 Webmin Configuration module. For internal use by lock_file only.
4801 if (&is_readonly_mode()) {
4802 return 0; # never lock in read-only mode
4804 elsif ($gconfig{'lockmode'} == 0) {
4807 elsif ($gconfig{'lockmode'} == 1) {
4811 # Check if under any of the directories
4813 foreach my $d (split(/\t+/, $gconfig{'lockdirs'})) {
4814 if (&same_file($d, $_[0]) ||
4815 &is_under_directory($d, $_[0])) {
4819 return $gconfig{'lockmode'} == 2 ? $match : !$match;
4823 =head2 webmin_log(action, type, object, ¶ms, [module], [host, script-on-host, client-ip])
4825 Log some action taken by a user. This is typically called at the end of a
4826 script, once all file changes are complete and all commands run. The
4829 =item action - A short code for the action being performed, like 'create'.
4831 =item type - A code for the type of object the action is performed to, like 'user'.
4833 =item object - A short name for the object, like 'joe' if the Unix user 'joe' was just created.
4835 =item params - A hash ref of additional information about the action.
4837 =item module - Name of the module in which the action was performed, which defaults to the current module.
4839 =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.
4841 =item script-on-host - Script name like create_user.cgi on the host the action was performed on.
4843 =item client-ip - IP address of the browser that performed the action.
4848 return if (!$gconfig{'log'} || &is_readonly_mode());
4849 my $m = $_[4] ? $_[4] : &get_module_name();
4851 if ($gconfig{'logclear'}) {
4852 # check if it is time to clear the log
4853 my @st = stat("$webmin_logfile.time");
4854 my $write_logtime = 0;
4856 if ($st[9]+$gconfig{'logtime'}*60*60 < time()) {
4857 # clear logfile and all diff files
4858 &unlink_file("$ENV{'WEBMIN_VAR'}/diffs");
4859 &unlink_file("$ENV{'WEBMIN_VAR'}/files");
4860 &unlink_file("$ENV{'WEBMIN_VAR'}/annotations");
4861 unlink($webmin_logfile);
4868 if ($write_logtime) {
4869 open(LOGTIME, ">$webmin_logfile.time");
4870 print LOGTIME time(),"\n";
4875 # If an action script directory is defined, call the appropriate scripts
4876 if ($gconfig{'action_script_dir'}) {
4877 my ($action, $type, $object) = ($_[0], $_[1], $_[2]);
4878 my ($basedir) = $gconfig{'action_script_dir'};
4880 for my $dir ($basedir/$type/$action, $basedir/$type, $basedir) {
4883 opendir(DIR, $dir) or die "Can't open $dir: $!";
4884 while (defined($file = readdir(DIR))) {
4885 next if ($file =~ /^\.\.?$/); # skip '.' and '..'
4886 if (-x "$dir/$file") {
4887 # Call a script notifying it of the action
4889 $ENV{'ACTION_MODULE'} = &get_module_name();
4890 $ENV{'ACTION_ACTION'} = $_[0];
4891 $ENV{'ACTION_TYPE'} = $_[1];
4892 $ENV{'ACTION_OBJECT'} = $_[2];
4893 $ENV{'ACTION_SCRIPT'} = $script_name;
4894 foreach my $p (keys %param) {
4895 $ENV{'ACTION_PARAM_'.uc($p)} = $param{$p};
4897 system("$dir/$file", @_,
4898 "<$null_file", ">$null_file", "2>&1");
4906 # should logging be done at all?
4907 return if ($gconfig{'logusers'} && &indexof($base_remote_user,
4908 split(/\s+/, $gconfig{'logusers'})) < 0);
4909 return if ($gconfig{'logmodules'} && &indexof($m,
4910 split(/\s+/, $gconfig{'logmodules'})) < 0);
4914 my @tm = localtime($now);
4915 my $script_name = $0 =~ /([^\/]+)$/ ? $1 : '-';
4916 my $id = sprintf "%d.%d.%d", $now, $$, $main::action_id_count;
4917 $main::action_id_count++;
4918 my $line = sprintf "%s [%2.2d/%s/%4.4d %2.2d:%2.2d:%2.2d] %s %s %s %s %s \"%s\" \"%s\" \"%s\"",
4919 $id, $tm[3], $text{"smonth_".($tm[4]+1)}, $tm[5]+1900,
4920 $tm[2], $tm[1], $tm[0],
4921 $remote_user || '-',
4922 $main::session_id || '-',
4923 $_[7] || $ENV{'REMOTE_HOST'} || '-',
4924 $m, $_[5] ? "$_[5]:$_[6]" : $script_name,
4925 $_[0], $_[1] ne '' ? $_[1] : '-', $_[2] ne '' ? $_[2] : '-';
4927 foreach my $k (sort { $a cmp $b } keys %{$_[3]}) {
4928 my $v = $_[3]->{$k};
4934 elsif (ref($v) eq 'ARRAY') {
4938 $vv =~ s/(['"\\\r\n\t\%])/sprintf("%%%2.2X",ord($1))/ge;
4939 $line .= " $k='$vv'";
4943 foreach $vv (split(/\0/, $v)) {
4945 $vv =~ s/(['"\\\r\n\t\%])/sprintf("%%%2.2X",ord($1))/ge;
4946 $line .= " $k='$vv'";
4949 $param{$k} = join(" ", @pv);
4951 open(WEBMINLOG, ">>$webmin_logfile");
4952 print WEBMINLOG $line,"\n";
4954 if ($gconfig{'logperms'}) {
4955 chmod(oct($gconfig{'logperms'}), $webmin_logfile);
4958 chmod(0600, $webmin_logfile);
4961 if ($gconfig{'logfiles'} && !&get_module_variable('$no_log_file_changes')) {
4962 # Find and record the changes made to any locked files, or commands run
4964 mkdir("$ENV{'WEBMIN_VAR'}/diffs", 0700);
4965 foreach my $d (@main::locked_file_diff) {
4966 mkdir("$ENV{'WEBMIN_VAR'}/diffs/$id", 0700);
4967 open(DIFFLOG, ">$ENV{'WEBMIN_VAR'}/diffs/$id/$i");
4968 print DIFFLOG "$d->{'type'} $d->{'object'}\n";
4969 print DIFFLOG $d->{'data'};
4971 if ($d->{'input'}) {
4972 open(DIFFLOG, ">$ENV{'WEBMIN_VAR'}/diffs/$id/$i.input");
4973 print DIFFLOG $d->{'input'};
4976 if ($gconfig{'logperms'}) {
4977 chmod(oct($gconfig{'logperms'}),
4978 "$ENV{'WEBMIN_VAR'}/diffs/$id/$i",
4979 "$ENV{'WEBMIN_VAR'}/diffs/$id/$i.input");
4983 @main::locked_file_diff = undef;
4985 if ($gconfig{'logfullfiles'}) {
4986 # Save the original contents of any modified files
4988 mkdir("$ENV{'WEBMIN_VAR'}/files", 0700);
4989 foreach my $f (keys %main::orig_file_data) {
4990 mkdir("$ENV{'WEBMIN_VAR'}/files/$id", 0700);
4991 open(ORIGLOG, ">$ENV{'WEBMIN_VAR'}/files/$id/$i");
4992 if (!defined($main::orig_file_type{$f})) {
4993 print ORIGLOG -1," ",$f,"\n";
4996 print ORIGLOG $main::orig_file_type{$f}," ",$f,"\n";
4998 print ORIGLOG $main::orig_file_data{$f};
5000 if ($gconfig{'logperms'}) {
5001 chmod(oct($gconfig{'logperms'}),
5002 "$ENV{'WEBMIN_VAR'}/files/$id.$i");
5006 %main::orig_file_data = undef;
5007 %main::orig_file_type = undef;
5011 if ($gconfig{'logsyslog'}) {
5012 eval 'use Sys::Syslog qw(:DEFAULT setlogsock);
5013 openlog(&get_product_name(), "cons,pid,ndelay", "daemon");
5014 setlogsock("inet");';
5016 # Syslog module is installed .. try to convert to a
5017 # human-readable form
5019 my $mod = &get_module_name();
5020 my $mdir = module_root_directory($mod);
5021 if (-r "$mdir/log_parser.pl") {
5022 &foreign_require($mod, "log_parser.pl");
5024 foreach my $k (keys %{$_[3]}) {
5025 my $v = $_[3]->{$k};
5026 if (ref($v) eq 'ARRAY') {
5027 $params{$k} = join("\0", @$v);
5033 $msg = &foreign_call($mod, "parse_webmin_log",
5034 $remote_user, $script_name,
5035 $_[0], $_[1], $_[2], \%params);
5036 $msg =~ s/<[^>]*>//g; # Remove tags
5038 elsif ($_[0] eq "_config_") {
5039 my %wtext = &load_language("webminlog");
5040 $msg = $wtext{'search_config'};
5042 $msg ||= "$_[0] $_[1] $_[2]";
5043 my %info = &get_module_info($m);
5044 eval { syslog("info", "%s", "[$info{'desc'}] $msg"); };
5049 =head2 additional_log(type, object, data, [input])
5051 Records additional log data for an upcoming call to webmin_log, such
5052 as a command that was run or SQL that was executed. Typically you will never
5053 need to call this function directory.
5058 if ($gconfig{'logfiles'} && !&get_module_variable('$no_log_file_changes')) {
5059 push(@main::locked_file_diff,
5060 { 'type' => $_[0], 'object' => $_[1], 'data' => $_[2],
5061 'input' => $_[3] } );
5065 =head2 webmin_debug_log(type, message)
5067 Write something to the Webmin debug log. For internal use only.
5070 sub webmin_debug_log
5072 my ($type, $msg) = @_;
5073 return 0 if (!$main::opened_debug_log);
5074 return 0 if ($gconfig{'debug_no'.$main::webmin_script_type});
5075 if ($gconfig{'debug_modules'}) {
5076 my @dmods = split(/\s+/, $gconfig{'debug_modules'});
5077 return 0 if (&indexof($main::initial_module_name, @dmods) < 0);
5080 my @tm = localtime($now);
5082 "%s [%2.2d/%s/%4.4d %2.2d:%2.2d:%2.2d] %s %s %s %s \"%s\"",
5083 $$, $tm[3], $text{"smonth_".($tm[4]+1)}, $tm[5]+1900,
5084 $tm[2], $tm[1], $tm[0],
5085 $remote_user || "-",
5086 $ENV{'REMOTE_HOST'} || "-",
5087 &get_module_name() || "-",
5090 seek(main::DEBUGLOG, 0, 2);
5091 print main::DEBUGLOG $line."\n";
5095 =head2 system_logged(command)
5097 Just calls the Perl system() function, but also logs the command run.
5102 if (&is_readonly_mode()) {
5103 print STDERR "Vetoing command $_[0]\n";
5106 my @realcmd = ( &translate_command($_[0]), @_[1..$#_] );
5107 my $cmd = join(" ", @realcmd);
5109 if ($cmd =~ s/(\s*&\s*)$//) {
5112 while($cmd =~ s/(\d*)(<|>)((\/(tmp|dev)\S+)|&\d+)\s*$//) { }
5113 $cmd =~ s/^\((.*)\)\s*$/$1/;
5115 &additional_log('exec', undef, $cmd);
5116 return system(@realcmd);
5119 =head2 backquote_logged(command)
5121 Executes a command and returns the output (like `command`), but also logs it.
5124 sub backquote_logged
5126 if (&is_readonly_mode()) {
5128 print STDERR "Vetoing command $_[0]\n";
5131 my $realcmd = &translate_command($_[0]);
5134 if ($cmd =~ s/(\s*&\s*)$//) {
5137 while($cmd =~ s/(\d*)(<|>)((\/(tmp\/.webmin|dev)\S+)|&\d+)\s*$//) { }
5138 $cmd =~ s/^\((.*)\)\s*$/$1/;
5140 &additional_log('exec', undef, $cmd);
5141 &webmin_debug_log('CMD', "cmd=$cmd") if ($gconfig{'debug_what_cmd'});
5145 =head2 backquote_with_timeout(command, timeout, safe?, [maxlines])
5147 Runs some command, waiting at most the given number of seconds for it to
5148 complete, and returns the output. The maxlines parameter sets the number
5149 of lines of output to capture. The safe parameter should be set to 1 if the
5150 command is safe for read-only mode users to run.
5153 sub backquote_with_timeout
5155 my $realcmd = &translate_command($_[0]);
5156 &webmin_debug_log('CMD', "cmd=$realcmd timeout=$_[1]")
5157 if ($gconfig{'debug_what_cmd'});
5159 my $pid = &open_execute_command(OUT, "($realcmd) <$null_file", 1, $_[2]);
5164 my $elapsed = time() - $start;
5165 last if ($elapsed > $_[1]);
5167 vec($rmask, fileno(OUT), 1) = 1;
5168 my $sel = select($rmask, undef, undef, $_[1] - $elapsed);
5169 last if (!$sel || $sel < 0);
5171 last if (!defined($line));
5174 if ($_[3] && $linecount >= $_[3]) {
5179 if (kill('TERM', $pid) && time() - $start >= $_[1]) {
5183 return wantarray ? ($out, $timed_out) : $out;
5186 =head2 backquote_command(command, safe?)
5188 Executes a command and returns the output (like `command`), subject to
5189 command translation. The safe parameter should be set to 1 if the command
5190 is safe for read-only mode users to run.
5193 sub backquote_command
5195 if (&is_readonly_mode() && !$_[1]) {
5196 print STDERR "Vetoing command $_[0]\n";
5200 my $realcmd = &translate_command($_[0]);
5201 &webmin_debug_log('CMD', "cmd=$realcmd") if ($gconfig{'debug_what_cmd'});
5205 =head2 kill_logged(signal, pid, ...)
5207 Like Perl's built-in kill function, but also logs the fact that some process
5208 was killed. On Windows, falls back to calling process.exe to terminate a
5214 return scalar(@_)-1 if (&is_readonly_mode());
5215 &webmin_debug_log('KILL', "signal=$_[0] pids=".join(" ", @_[1..@_-1]))
5216 if ($gconfig{'debug_what_procs'});
5217 &additional_log('kill', $_[0], join(" ", @_[1..@_-1])) if (@_ > 1);
5218 if ($gconfig{'os_type'} eq 'windows') {
5219 # Emulate some kills with process.exe
5220 my $arg = $_[0] eq "KILL" ? "-k" :
5221 $_[0] eq "TERM" ? "-q" :
5222 $_[0] eq "STOP" ? "-s" :
5223 $_[0] eq "CONT" ? "-r" : undef;
5225 foreach my $p (@_[1..@_-1]) {
5227 $ok ||= kill($_[0], $p);
5230 &execute_command("process $arg $p");
5242 =head2 rename_logged(old, new)
5244 Re-names a file and logs the rename. If the old and new files are on different
5245 filesystems, calls mv or the Windows rename function to do the job.
5250 &additional_log('rename', $_[0], $_[1]) if ($_[0] ne $_[1]);
5251 return &rename_file($_[0], $_[1]);
5254 =head2 rename_file(old, new)
5256 Renames a file or directory. If the old and new files are on different
5257 filesystems, calls mv or the Windows rename function to do the job.
5262 if (&is_readonly_mode()) {
5263 print STDERR "Vetoing rename from $_[0] to $_[1]\n";
5266 my $src = &translate_filename($_[0]);
5267 my $dst = &translate_filename($_[1]);
5268 &webmin_debug_log('RENAME', "src=$src dst=$dst")
5269 if ($gconfig{'debug_what_ops'});
5270 my $ok = rename($src, $dst);
5271 if (!$ok && $! !~ /permission/i) {
5272 # Try the mv command, in case this is a cross-filesystem rename
5273 if ($gconfig{'os_type'} eq 'windows') {
5274 # Need to use rename
5275 my $out = &backquote_command("rename ".quotemeta($_[0]).
5276 " ".quotemeta($_[1])." 2>&1");
5278 $! = $out if (!$ok);
5282 my $out = &backquote_command("mv ".quotemeta($_[0]).
5283 " ".quotemeta($_[1])." 2>&1");
5285 $! = $out if (!$ok);
5291 =head2 symlink_logged(src, dest)
5293 Create a symlink, and logs it. Effectively does the same thing as the Perl
5300 my $rv = &symlink_file($_[0], $_[1]);
5301 &unlock_file($_[1]);
5305 =head2 symlink_file(src, dest)
5307 Creates a soft link, unless in read-only mode. Effectively does the same thing
5308 as the Perl symlink function.
5313 if (&is_readonly_mode()) {
5314 print STDERR "Vetoing symlink from $_[0] to $_[1]\n";
5317 my $src = &translate_filename($_[0]);
5318 my $dst = &translate_filename($_[1]);
5319 &webmin_debug_log('SYMLINK', "src=$src dst=$dst")
5320 if ($gconfig{'debug_what_ops'});
5321 return symlink($src, $dst);
5324 =head2 link_file(src, dest)
5326 Creates a hard link, unless in read-only mode. The existing new link file
5327 will be deleted if necessary. Effectively the same as Perl's link function.
5332 if (&is_readonly_mode()) {
5333 print STDERR "Vetoing link from $_[0] to $_[1]\n";
5336 my $src = &translate_filename($_[0]);
5337 my $dst = &translate_filename($_[1]);
5338 &webmin_debug_log('LINK', "src=$src dst=$dst")
5339 if ($gconfig{'debug_what_ops'});
5340 unlink($dst); # make sure link works
5341 return link($src, $dst);
5344 =head2 make_dir(dir, perms, recursive)
5346 Creates a directory and sets permissions on it, unless in read-only mode.
5347 The perms parameter sets the octal permissions to apply, which unlike Perl's
5348 mkdir will really get set. The recursive flag can be set to 1 to have the
5349 function create parent directories too.
5354 my ($dir, $perms, $recur) = @_;
5355 if (&is_readonly_mode()) {
5356 print STDERR "Vetoing directory $dir\n";
5359 $dir = &translate_filename($dir);
5360 my $exists = -d $dir ? 1 : 0;
5361 return 1 if ($exists && $recur); # already exists
5362 &webmin_debug_log('MKDIR', $dir) if ($gconfig{'debug_what_ops'});
5363 my $rv = mkdir($dir, $perms);
5364 if (!$rv && $recur) {
5365 # Failed .. try mkdir -p
5366 my $param = $gconfig{'os_type'} eq 'windows' ? "" : "-p";
5367 my $ex = &execute_command("mkdir $param "."e_path($dir));
5373 chmod($perms, $dir);
5378 =head2 set_ownership_permissions(user, group, perms, file, ...)
5380 Sets the user, group owner and permissions on some files. The parameters are :
5382 =item user - UID or username to change the file owner to. If undef, then the owner is not changed.
5384 =item group - GID or group name to change the file group to. If undef, then the group is set to the user's primary group.
5386 =item perms - Octal permissions set to set on the file. If undef, they are left alone.
5388 =item file - One or more files or directories to modify.
5391 sub set_ownership_permissions
5393 my ($user, $group, $perms, @files) = @_;
5394 if (&is_readonly_mode()) {
5395 print STDERR "Vetoing permission changes on ",join(" ", @files),"\n";
5398 @files = map { &translate_filename($_) } @files;
5399 if ($gconfig{'debug_what_ops'}) {
5400 foreach my $f (@files) {
5401 &webmin_debug_log('PERMS',
5402 "file=$f user=$user group=$group perms=$perms");
5406 if (defined($user)) {
5407 my $uid = $user !~ /^\d+$/ ? getpwnam($user) : $user;
5409 if (defined($group)) {
5410 $gid = $group !~ /^\d+$/ ? getgrnam($group) : $group;
5413 my @uinfo = getpwuid($uid);
5416 $rv = chown($uid, $gid, @files);
5418 if ($rv && defined($perms)) {
5419 $rv = chmod($perms, @files);
5424 =head2 unlink_logged(file, ...)
5426 Like Perl's unlink function, but locks the files beforehand and un-locks them
5427 after so that the deletion is logged by Webmin.
5433 foreach my $f (@_) {
5434 if (!&test_lock($f)) {
5439 my @rv = &unlink_file(@_);
5440 foreach my $f (@_) {
5445 return wantarray ? @rv : $rv[0];
5448 =head2 unlink_file(file, ...)
5450 Deletes some files or directories. Like Perl's unlink function, but also
5451 recursively deletes directories with the rm command if needed.
5456 return 1 if (&is_readonly_mode());
5459 foreach my $f (@_) {
5460 &unflush_file_lines($f);
5461 my $realf = &translate_filename($f);
5462 &webmin_debug_log('UNLINK', $realf) if ($gconfig{'debug_what_ops'});
5464 if (!rmdir($realf)) {
5466 if ($gconfig{'os_type'} eq 'windows') {
5467 # Call del and rmdir commands
5470 my $out = `del /q "$qm" 2>&1`;
5472 $out = `rmdir "$qm" 2>&1`;
5477 my $qm = quotemeta($realf);
5478 $out = `rm -rf $qm 2>&1`;
5487 if (!unlink($realf)) {
5493 return wantarray ? ($rv, $err) : $rv;
5496 =head2 copy_source_dest(source, dest)
5498 Copy some file or directory to a new location. Returns 1 on success, or 0
5499 on failure - also sets $! on failure. If the source is a directory, uses
5500 piped tar commands to copy a whole directory structure including permissions
5504 sub copy_source_dest
5506 return (1, undef) if (&is_readonly_mode());
5507 my ($src, $dst) = @_;
5510 &webmin_debug_log('COPY', "src=$src dst=$dst")
5511 if ($gconfig{'debug_what_ops'});
5512 if ($gconfig{'os_type'} eq 'windows') {
5513 # No tar or cp on windows, so need to use copy command
5517 $out = &backquote_logged("xcopy \"$src\" \"$dst\" /Y /E /I 2>&1");
5520 $out = &backquote_logged("copy /Y \"$src\" \"$dst\" 2>&1");
5528 # A directory .. need to copy with tar command
5529 my @st = stat($src);
5532 &set_ownership_permissions($st[4], $st[5], $st[2], $dst);
5533 $out = &backquote_logged("(cd ".quotemeta($src)." ; tar cf - . | (cd ".quotemeta($dst)." ; tar xf -)) 2>&1");
5540 # Can just copy with cp
5541 my $out = &backquote_logged("cp -p ".quotemeta($src).
5542 " ".quotemeta($dst)." 2>&1");
5548 return wantarray ? ($ok, $err) : $ok;
5551 =head2 remote_session_name(host|&server)
5553 Generates a session ID for some server. For this server, this will always
5554 be an empty string. For a server object it will include the hostname and
5555 port and PID. For a server name, it will include the hostname and PID. For
5559 sub remote_session_name
5561 return ref($_[0]) && $_[0]->{'host'} && $_[0]->{'port'} ?
5562 "$_[0]->{'host'}:$_[0]->{'port'}.$$" :
5563 $_[0] eq "" || ref($_[0]) && $_[0]->{'id'} == 0 ? "" :
5564 ref($_[0]) ? "" : "$_[0].$$";
5567 =head2 remote_foreign_require(server, module, file)
5569 Connects to rpc.cgi on a remote webmin server and have it open a session
5570 to a process that will actually do the require and run functions. This is the
5571 equivalent for foreign_require, but for a remote Webmin system. The server
5572 parameter can either be a hostname of a system registered in the Webmin
5573 Servers Index module, or a hash reference for a system from that module.
5576 sub remote_foreign_require
5578 my $call = { 'action' => 'require',
5581 my $sn = &remote_session_name($_[0]);
5582 if ($remote_session{$sn}) {
5583 $call->{'session'} = $remote_session{$sn};
5586 $call->{'newsession'} = 1;
5588 my $rv = &remote_rpc_call($_[0], $call);
5589 if ($rv->{'session'}) {
5590 $remote_session{$sn} = $rv->{'session'};
5591 $remote_session_server{$sn} = $_[0];
5595 =head2 remote_foreign_call(server, module, function, [arg]*)
5597 Call a function on a remote server. Must have been setup first with
5598 remote_foreign_require for the same server and module. Equivalent to
5599 foreign_call, but with the extra server parameter to specify the remote
5603 sub remote_foreign_call
5605 return undef if (&is_readonly_mode());
5606 my $sn = &remote_session_name($_[0]);
5607 return &remote_rpc_call($_[0], { 'action' => 'call',
5610 'session' => $remote_session{$sn},
5611 'args' => [ @_[3 .. $#_] ] } );
5614 =head2 remote_foreign_check(server, module, [api-only])
5616 Checks if some module is installed and supported on a remote server. Equivilant
5617 to foreign_check, but for the remote Webmin system specified by the server
5621 sub remote_foreign_check
5623 return &remote_rpc_call($_[0], { 'action' => 'check',
5628 =head2 remote_foreign_config(server, module)
5630 Gets the configuration for some module from a remote server, as a hash.
5631 Equivalent to foreign_config, but for a remote system.
5634 sub remote_foreign_config
5636 return &remote_rpc_call($_[0], { 'action' => 'config',
5637 'module' => $_[1] });
5640 =head2 remote_eval(server, module, code)
5642 Evaluates some perl code in the context of a module on a remote webmin server.
5643 The server parameter must be the hostname of a remote system, module must
5644 be a module directory name, and code a string of Perl code to run. This can
5645 only be called after remote_foreign_require for the same server and module.
5650 return undef if (&is_readonly_mode());
5651 my $sn = &remote_session_name($_[0]);
5652 return &remote_rpc_call($_[0], { 'action' => 'eval',
5655 'session' => $remote_session{$sn} });
5658 =head2 remote_write(server, localfile, [remotefile], [remotebasename])
5660 Transfers some local file to another server via Webmin's RPC protocol, and
5661 returns the resulting remote filename. If the remotefile parameter is given,
5662 that is the destination filename which will be used. Otherwise a randomly
5663 selected temporary filename will be used, and returned by the function.
5668 return undef if (&is_readonly_mode());
5670 my $sn = &remote_session_name($_[0]);
5671 if (!$_[0] || $remote_server_version{$sn} >= 0.966) {
5672 # Copy data over TCP connection
5673 my $rv = &remote_rpc_call($_[0], { 'action' => 'tcpwrite',
5675 'name' => $_[3] } );
5677 my $serv = ref($_[0]) ? $_[0]->{'host'} : $_[0];
5678 &open_socket($serv || "localhost", $rv->[1], TWRITE, \$error);
5679 return &$main::remote_error_handler("Failed to transfer file : $error")
5682 while(read(FILE, $got, 1024) > 0) {
5686 shutdown(TWRITE, 1);
5688 if ($error && $error !~ /^OK/) {
5689 # Got back an error!
5690 return &$main::remote_error_handler("Failed to transfer file : $error");
5696 # Just pass file contents as parameters
5698 while(read(FILE, $got, 1024) > 0) {
5702 return &remote_rpc_call($_[0], { 'action' => 'write',
5705 'session' => $remote_session{$sn} });
5709 =head2 remote_read(server, localfile, remotefile)
5711 Transfers a file from a remote server to this system, using Webmin's RPC
5712 protocol. The server parameter must be the hostname of a system registered
5713 in the Webmin Servers Index module, localfile is the destination path on this
5714 system, and remotefile is the file to fetch from the remote server.
5719 my $sn = &remote_session_name($_[0]);
5720 if (!$_[0] || $remote_server_version{$sn} >= 0.966) {
5721 # Copy data over TCP connection
5722 my $rv = &remote_rpc_call($_[0], { 'action' => 'tcpread',
5723 'file' => $_[2] } );
5725 return &$main::remote_error_handler("Failed to transfer file : $rv->[1]");
5728 my $serv = ref($_[0]) ? $_[0]->{'host'} : $_[0];
5729 &open_socket($serv || "localhost", $rv->[1], TREAD, \$error);
5730 return &$main::remote_error_handler("Failed to transfer file : $error")
5733 open(FILE, ">$_[1]");
5734 while(read(TREAD, $got, 1024) > 0) {
5741 # Just get data as return value
5742 my $d = &remote_rpc_call($_[0], { 'action' => 'read',
5744 'session' => $remote_session{$sn} });
5745 open(FILE, ">$_[1]");
5751 =head2 remote_finished
5753 Close all remote sessions. This happens automatically after a while
5754 anyway, but this function should be called to clean things up faster.
5759 foreach my $sn (keys %remote_session) {
5760 my $server = $remote_session_server{$sn};
5761 &remote_rpc_call($server, { 'action' => 'quit',
5762 'session' => $remote_session{$sn} } );
5763 delete($remote_session{$sn});
5764 delete($remote_session_server{$sn});
5766 foreach $fh (keys %fast_fh_cache) {
5768 delete($fast_fh_cache{$fh});
5772 =head2 remote_error_setup(&function)
5774 Sets a function to be called instead of &error when a remote RPC operation
5775 fails. Useful if you want to have more control over your remote operations.
5778 sub remote_error_setup
5780 $main::remote_error_handler = $_[0] || \&error;
5783 =head2 remote_rpc_call(server, structure)
5785 Calls rpc.cgi on some server and passes it a perl structure (hash,array,etc)
5786 and then reads back a reply structure. This is mainly for internal use only,
5787 and is called by the other remote_* functions.
5793 my $sn = &remote_session_name($_[0]); # Will be undef for local connection
5795 # Server structure was given
5797 $serv->{'user'} || $serv->{'id'} == 0 ||
5798 return &$main::remote_error_handler(
5799 "No Webmin login set for server");
5802 # lookup the server in the webmin servers module if needed
5803 if (!%main::remote_servers_cache) {
5804 &foreign_require("servers", "servers-lib.pl");
5805 foreach $s (&foreign_call("servers", "list_servers")) {
5806 $main::remote_servers_cache{$s->{'host'}} = $s;
5807 $main::remote_servers_cache{$s->{'host'}.":".$s->{'port'}} = $s;
5810 $serv = $main::remote_servers_cache{$_[0]};
5811 $serv || return &$main::remote_error_handler(
5812 "No Webmin Servers entry for $_[0]");
5813 $serv->{'user'} || return &$main::remote_error_handler(
5814 "No login set for server $_[0]");
5816 my $ip = $serv->{'ip'} || $serv->{'host'};
5818 # Work out the username and password
5820 if ($serv->{'sameuser'}) {
5821 $user = $remote_user;
5822 defined($main::remote_pass) || return &$main::remote_error_handler(
5823 "Password for this server is not available");
5824 $pass = $main::remote_pass;
5827 $user = $serv->{'user'};
5828 $pass = $serv->{'pass'};
5831 if ($serv->{'fast'} || !$sn) {
5832 # Make TCP connection call to fastrpc.cgi
5833 if (!$fast_fh_cache{$sn} && $sn) {
5834 # Need to open the connection
5835 my $con = &make_http_connection(
5836 $ip, $serv->{'port'}, $serv->{'ssl'},
5837 "POST", "/fastrpc.cgi");
5838 return &$main::remote_error_handler(
5839 "Failed to connect to $serv->{'host'} : $con")
5841 &write_http_connection($con, "Host: $serv->{'host'}\r\n");
5842 &write_http_connection($con, "User-agent: Webmin\r\n");
5843 my $auth = &encode_base64("$user:$pass");
5845 &write_http_connection($con, "Authorization: basic $auth\r\n");
5846 &write_http_connection($con, "Content-length: ",
5847 length($tostr),"\r\n");
5848 &write_http_connection($con, "\r\n");
5849 &write_http_connection($con, $tostr);
5851 # read back the response
5852 my $line = &read_http_connection($con);
5853 $line =~ tr/\r\n//d;
5854 if ($line =~ /^HTTP\/1\..\s+401\s+/) {
5855 return &$main::remote_error_handler("Login to RPC server as $user rejected");
5857 $line =~ /^HTTP\/1\..\s+200\s+/ ||
5858 return &$main::remote_error_handler("HTTP error : $line");
5860 $line = &read_http_connection($con);
5861 $line =~ tr/\r\n//d;
5863 $line = &read_http_connection($con);
5864 if ($line =~ /^0\s+(.*)/) {
5865 return &$main::remote_error_handler("RPC error : $1");
5867 elsif ($line =~ /^1\s+(\S+)\s+(\S+)\s+(\S+)/ ||
5868 $line =~ /^1\s+(\S+)\s+(\S+)/) {
5869 # Started ok .. connect and save SID
5870 &close_http_connection($con);
5871 my ($port, $sid, $version, $error) = ($1, $2, $3);
5872 &open_socket($ip, $port, $sid, \$error);
5873 return &$main::remote_error_handler("Failed to connect to fastrpc.cgi : $error")
5875 $fast_fh_cache{$sn} = $sid;
5876 $remote_server_version{$sn} = $version;
5879 while($stuff = &read_http_connection($con)) {
5882 return &$main::remote_error_handler("Bad response from fastrpc.cgi : $line");
5885 elsif (!$fast_fh_cache{$sn}) {
5886 # Open the connection by running fastrpc.cgi locally
5887 pipe(RPCOUTr, RPCOUTw);
5891 open(STDOUT, ">&RPCOUTw");
5895 $ENV{'REQUEST_METHOD'} = 'GET';
5896 $ENV{'SCRIPT_NAME'} = '/fastrpc.cgi';
5897 $ENV{'SERVER_ROOT'} ||= $root_directory;
5899 if ($base_remote_user ne 'root' &&
5900 $base_remote_user ne 'admin') {
5901 # Need to fake up a login for the CGI!
5902 &read_acl(undef, \%acl);
5903 $ENV{'BASE_REMOTE_USER'} =
5904 $ENV{'REMOTE_USER'} =
5905 $acl{'root'} ? 'root' : 'admin';
5907 delete($ENV{'FOREIGN_MODULE_NAME'});
5908 delete($ENV{'FOREIGN_ROOT_DIRECTORY'});
5909 chdir($root_directory);
5910 if (!exec("$root_directory/fastrpc.cgi")) {
5911 print "exec failed : $!\n";
5918 ($line = <RPCOUTr>) =~ tr/\r\n//d;
5922 if ($line =~ /^0\s+(.*)/) {
5923 return &$main::remote_error_handler("RPC error : $2");
5925 elsif ($line =~ /^1\s+(\S+)\s+(\S+)/) {
5926 # Started ok .. connect and save SID
5928 my ($port, $sid, $error) = ($1, $2, undef);
5929 &open_socket("localhost", $port, $sid, \$error);
5930 return &$main::remote_error_handler("Failed to connect to fastrpc.cgi : $error") if ($error);
5931 $fast_fh_cache{$sn} = $sid;
5938 &error("Bad response from fastrpc.cgi : $line");
5941 # Got a connection .. send off the request
5942 my $fh = $fast_fh_cache{$sn};
5943 my $tostr = &serialise_variable($_[1]);
5944 print $fh length($tostr)," $fh\n";
5946 my $rlen = int(<$fh>);
5947 my ($fromstr, $got);
5948 while(length($fromstr) < $rlen) {
5949 return &$main::remote_error_handler("Failed to read from fastrpc.cgi")
5950 if (read($fh, $got, $rlen - length($fromstr)) <= 0);
5953 my $from = &unserialise_variable($fromstr);
5955 return &$main::remote_error_handler("Remote Webmin error");
5957 if (defined($from->{'arv'})) {
5958 return @{$from->{'arv'}};
5961 return $from->{'rv'};
5965 # Call rpc.cgi on remote server
5966 my $tostr = &serialise_variable($_[1]);
5968 my $con = &make_http_connection($ip, $serv->{'port'},
5969 $serv->{'ssl'}, "POST", "/rpc.cgi");
5970 return &$main::remote_error_handler("Failed to connect to $serv->{'host'} : $con") if (!ref($con));
5972 &write_http_connection($con, "Host: $serv->{'host'}\r\n");
5973 &write_http_connection($con, "User-agent: Webmin\r\n");
5974 my $auth = &encode_base64("$user:$pass");
5976 &write_http_connection($con, "Authorization: basic $auth\r\n");
5977 &write_http_connection($con, "Content-length: ",length($tostr),"\r\n");
5978 &write_http_connection($con, "\r\n");
5979 &write_http_connection($con, $tostr);
5981 # read back the response
5982 my $line = &read_http_connection($con);
5983 $line =~ tr/\r\n//d;
5984 if ($line =~ /^HTTP\/1\..\s+401\s+/) {
5985 return &$main::remote_error_handler("Login to RPC server as $user rejected");
5987 $line =~ /^HTTP\/1\..\s+200\s+/ || return &$main::remote_error_handler("RPC HTTP error : $line");
5989 $line = &read_http_connection($con);
5990 $line =~ tr/\r\n//d;
5993 while($line = &read_http_connection($con)) {
5997 my $from = &unserialise_variable($fromstr);
5998 return &$main::remote_error_handler("Invalid RPC login to $serv->{'host'}") if (!$from->{'status'});
5999 if (defined($from->{'arv'})) {
6000 return @{$from->{'arv'}};
6003 return $from->{'rv'};
6008 =head2 remote_multi_callback(&servers, parallel, &function, arg|&args, &returns, &errors, [module, library])
6010 Executes some function in parallel on multiple servers at once. Fills in
6011 the returns and errors arrays respectively. If the module and library
6012 parameters are given, that module is remotely required on the server first,
6013 to check if it is connectable. The parameters are :
6015 =item servers - A list of Webmin system hash references.
6017 =item parallel - Number of parallel operations to perform.
6019 =item function - Reference to function to call for each system.
6021 =item args - Additional parameters to the function.
6023 =item returns - Array ref to place return values into, in same order as servers.
6025 =item errors - Array ref to place error messages into.
6027 =item module - Optional module to require on the remote system first.
6029 =item library - Optional library to require in the module.
6032 sub remote_multi_callback
6034 my ($servs, $parallel, $func, $args, $rets, $errs, $mod, $lib) = @_;
6035 &remote_error_setup(\&remote_multi_callback_error);
6037 # Call the functions
6039 foreach my $g (@$servs) {
6045 $remote_multi_callback_err = undef;
6047 # Require the remote lib
6048 &remote_foreign_require($g->{'host'}, $mod, $lib);
6049 if ($remote_multi_callback_err) {
6050 # Failed .. return error
6051 print $wh &serialise_variable(
6052 [ undef, $remote_multi_callback_err ]);
6058 my $a = ref($args) ? $args->[$p] : $args;
6059 my $rv = &$func($g, $a);
6062 print $wh &serialise_variable(
6063 [ $rv, $remote_multi_callback_err ]);
6071 # Read back the results
6073 foreach my $g (@$servs) {
6077 $errs->[$p] = "Failed to read response from $g->{'host'}";
6080 my $rv = &unserialise_variable($line);
6082 $rets->[$p] = $rv->[0];
6083 $errs->[$p] = $rv->[1];
6088 &remote_error_setup(undef);
6091 sub remote_multi_callback_error
6093 $remote_multi_callback_err = $_[0];
6096 =head2 serialise_variable(variable)
6098 Converts some variable (maybe a scalar, hash ref, array ref or scalar ref)
6099 into a url-encoded string. In the cases of arrays and hashes, it is recursively
6100 called on each member to serialize the entire object.
6103 sub serialise_variable
6105 if (!defined($_[0])) {
6111 $rv = &urlize($_[0]);
6113 elsif ($r eq 'SCALAR') {
6114 $rv = &urlize(${$_[0]});
6116 elsif ($r eq 'ARRAY') {
6117 $rv = join(",", map { &urlize(&serialise_variable($_)) } @{$_[0]});
6119 elsif ($r eq 'HASH') {
6120 $rv = join(",", map { &urlize(&serialise_variable($_)).",".
6121 &urlize(&serialise_variable($_[0]->{$_})) }
6124 elsif ($r eq 'REF') {
6125 $rv = &serialise_variable(${$_[0]});
6127 elsif ($r eq 'CODE') {
6132 # An object - treat as a hash
6133 $r = "OBJECT ".&urlize($r);
6134 $rv = join(",", map { &urlize(&serialise_variable($_)).",".
6135 &urlize(&serialise_variable($_[0]->{$_})) }
6138 return ($r ? $r : 'VAL').",".$rv;
6141 =head2 unserialise_variable(string)
6143 Converts a string created by serialise_variable() back into the original
6144 scalar, hash ref, array ref or scalar ref. If the original variable was a Perl
6145 object, the same class is used on this system, if available.
6148 sub unserialise_variable
6150 my @v = split(/,/, $_[0]);
6152 if ($v[0] eq 'VAL') {
6153 @v = split(/,/, $_[0], -1);
6154 $rv = &un_urlize($v[1]);
6156 elsif ($v[0] eq 'SCALAR') {
6157 local $r = &un_urlize($v[1]);
6160 elsif ($v[0] eq 'ARRAY') {
6162 for(my $i=1; $i<@v; $i++) {
6163 push(@$rv, &unserialise_variable(&un_urlize($v[$i])));
6166 elsif ($v[0] eq 'HASH') {
6168 for(my $i=1; $i<@v; $i+=2) {
6169 $rv->{&unserialise_variable(&un_urlize($v[$i]))} =
6170 &unserialise_variable(&un_urlize($v[$i+1]));
6173 elsif ($v[0] eq 'REF') {
6174 local $r = &unserialise_variable($v[1]);
6177 elsif ($v[0] eq 'UNDEF') {
6180 elsif ($v[0] =~ /^OBJECT\s+(.*)$/) {
6181 # An object hash that we have to re-bless
6184 for(my $i=1; $i<@v; $i+=2) {
6185 $rv->{&unserialise_variable(&un_urlize($v[$i]))} =
6186 &unserialise_variable(&un_urlize($v[$i+1]));
6194 =head2 other_groups(user)
6196 Returns a list of secondary groups a user is a member of, as a list of
6205 while(my @g = getgrent()) {
6206 my @m = split(/\s+/, $g[3]);
6207 push(@rv, $g[2]) if (&indexof($user, @m) >= 0);
6209 endgrent() if ($gconfig{'os_type'} ne 'hpux');
6213 =head2 date_chooser_button(dayfield, monthfield, yearfield)
6215 Returns HTML for a button that pops up a data chooser window. The parameters
6218 =item dayfield - Name of the text field to place the day of the month into.
6220 =item monthfield - Name of the select field to select the month of the year in, indexed from 1.
6222 =item yearfield - Name of the text field to place the year into.
6225 sub date_chooser_button
6227 return &theme_date_chooser_button(@_)
6228 if (defined(&theme_date_chooser_button));
6229 my ($w, $h) = (250, 225);
6230 if ($gconfig{'db_sizedate'}) {
6231 ($w, $h) = split(/x/, $gconfig{'db_sizedate'});
6233 return "<input type=button onClick='window.dfield = form.$_[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";
6236 =head2 help_file(module, file)
6238 Returns the path to a module's help file of some name, typically under the
6239 help directory with a .html extension.
6244 my $mdir = &module_root_directory($_[0]);
6245 my $dir = "$mdir/help";
6246 foreach my $o (@lang_order_list) {
6247 my $lang = "$dir/$_[1].$o.html";
6248 return $lang if (-r $lang);
6250 return "$dir/$_[1].html";
6255 Seeds the random number generator, if not already done in this script. On Linux
6256 this makes use of the current time, process ID and a read from /dev/urandom.
6257 On other systems, only the current time and process ID are used.
6262 if (!$main::done_seed_random) {
6263 if (open(RANDOM, "/dev/urandom")) {
6265 read(RANDOM, $buf, 4);
6267 srand(time() ^ $$ ^ $buf);
6272 $main::done_seed_random = 1;
6276 =head2 disk_usage_kb(directory)
6278 Returns the number of kB used by some directory and all subdirs. Implemented
6279 by calling the C<du -k> command.
6284 my $dir = &translate_filename($_[0]);
6286 my $ex = &execute_command("du -sk ".quotemeta($dir), undef, \$out, undef, 0, 1);
6288 &execute_command("du -s ".quotemeta($dir), undef, \$out, undef, 0, 1);
6290 return $out =~ /^([0-9]+)/ ? $1 : "???";
6293 =head2 recursive_disk_usage(directory, [skip-regexp], [only-regexp])
6295 Returns the number of bytes taken up by all files in some directory and all
6296 sub-directories, by summing up their lengths. The disk_usage_kb is more
6297 reflective of reality, as the filesystem typically pads file sizes to 1k or
6301 sub recursive_disk_usage
6303 my $dir = &translate_filename($_[0]);
6310 my @st = stat($dir);
6316 my @files = readdir(DIR);
6318 foreach my $f (@files) {
6319 next if ($f eq "." || $f eq "..");
6320 next if ($skip && $f =~ /$skip/);
6321 next if ($only && $f !~ /$only/);
6322 $rv += &recursive_disk_usage("$dir/$f", $skip, $only);
6328 =head2 help_search_link(term, [ section, ... ] )
6330 Returns HTML for a link to the man module for searching local and online
6331 docs for various search terms. The term parameter can either be a single
6332 word like 'bind', or a space-separated list of words. This function is typically
6333 used by modules that want to refer users to additional documentation in man
6334 pages or local system doc files.
6337 sub help_search_link
6339 if (&foreign_available("man") && !$tconfig{'nosearch'}) {
6340 my $for = &urlize(shift(@_));
6341 return "<a href='$gconfig{'webprefix'}/man/search.cgi?".
6342 join("&", map { "section=$_" } @_)."&".
6343 "for=$for&exact=1&check=".&get_module_name()."'>".
6344 $text{'helpsearch'}."</a>\n";
6351 =head2 make_http_connection(host, port, ssl, method, page, [&headers])
6353 Opens a connection to some HTTP server, maybe through a proxy, and returns
6354 a handle object. The handle can then be used to send additional headers
6355 and read back a response. If anything goes wrong, returns an error string.
6356 The parameters are :
6358 =item host - Hostname or IP address of the webserver to connect to.
6360 =item port - HTTP port number to connect to.
6362 =item ssl - Set to 1 to connect in SSL mode.
6364 =item method - HTTP method, like GET or POST.
6366 =item page - Page to request on the webserver, like /foo/index.html
6368 =item headers - Array ref of additional HTTP headers, each of which is a 2-element array ref.
6371 sub make_http_connection
6373 my ($host, $port, $ssl, $method, $page, $headers) = @_;
6376 foreach my $h (@$headers) {
6377 $htxt .= $h->[0].": ".$h->[1]."\r\n";
6381 if (&is_readonly_mode()) {
6382 return "HTTP connections not allowed in readonly mode";
6384 my $rv = { 'fh' => time().$$ };
6387 eval "use Net::SSLeay";
6388 $@ && return $text{'link_essl'};
6389 eval "Net::SSLeay::SSLeay_add_ssl_algorithms()";
6390 eval "Net::SSLeay::load_error_strings()";
6391 $rv->{'ssl_ctx'} = Net::SSLeay::CTX_new() ||
6392 return "Failed to create SSL context";
6393 $rv->{'ssl_con'} = Net::SSLeay::new($rv->{'ssl_ctx'}) ||
6394 return "Failed to create SSL connection";
6396 if ($gconfig{'http_proxy'} =~ /^http:\/\/(\S+):(\d+)/ &&
6397 !&no_proxy($host)) {
6400 &open_socket($1, $2, $rv->{'fh'}, \$error);
6403 my $fh = $rv->{'fh'};
6404 print $fh "CONNECT $host:$port HTTP/1.0\r\n";
6405 if ($gconfig{'proxy_user'}) {
6406 my $auth = &encode_base64(
6407 "$gconfig{'proxy_user'}:".
6408 "$gconfig{'proxy_pass'}");
6409 $auth =~ tr/\r\n//d;
6410 print $fh "Proxy-Authorization: Basic $auth\r\n";
6414 if ($line =~ /^HTTP(\S+)\s+(\d+)\s+(.*)/) {
6415 return "Proxy error : $3" if ($2 != 200);
6418 return "Proxy error : $line";
6423 elsif (!$gconfig{'proxy_fallback'}) {
6424 # Connection to proxy failed - give up
6431 &open_socket($host, $port, $rv->{'fh'}, \$error);
6432 return $error if ($error);
6434 Net::SSLeay::set_fd($rv->{'ssl_con'}, fileno($rv->{'fh'}));
6435 Net::SSLeay::connect($rv->{'ssl_con'}) ||
6436 return "SSL connect() failed";
6437 my $rtxt = "$method $page HTTP/1.0\r\n".$htxt;
6438 Net::SSLeay::write($rv->{'ssl_con'}, $rtxt);
6441 # Plain HTTP request
6443 if ($gconfig{'http_proxy'} =~ /^http:\/\/(\S+):(\d+)/ &&
6444 !&no_proxy($host)) {
6447 &open_socket($1, $2, $rv->{'fh'}, \$error);
6451 my $fh = $rv->{'fh'};
6452 my $rtxt = $method." ".
6453 "http://$host:$port$page HTTP/1.0\r\n";
6454 if ($gconfig{'proxy_user'}) {
6455 my $auth = &encode_base64(
6456 "$gconfig{'proxy_user'}:".
6457 "$gconfig{'proxy_pass'}");
6458 $auth =~ tr/\r\n//d;
6459 $rtxt .= "Proxy-Authorization: Basic $auth\r\n";
6464 elsif (!$gconfig{'proxy_fallback'}) {
6469 # Connecting directly
6471 &open_socket($host, $port, $rv->{'fh'}, \$error);
6472 return $error if ($error);
6473 my $fh = $rv->{'fh'};
6474 my $rtxt = "$method $page HTTP/1.0\r\n".$htxt;
6481 =head2 read_http_connection(&handle, [bytes])
6483 Reads either one line or up to the specified number of bytes from the handle,
6484 originally supplied by make_http_connection.
6487 sub read_http_connection
6491 if ($h->{'ssl_con'}) {
6494 while(($idx = index($h->{'buffer'}, "\n")) < 0) {
6495 # need to read more..
6496 if (!($more = Net::SSLeay::read($h->{'ssl_con'}))) {
6498 $rv = $h->{'buffer'};
6499 delete($h->{'buffer'});
6502 $h->{'buffer'} .= $more;
6504 $rv = substr($h->{'buffer'}, 0, $idx+1);
6505 $h->{'buffer'} = substr($h->{'buffer'}, $idx+1);
6508 if (length($h->{'buffer'})) {
6509 $rv = $h->{'buffer'};
6510 delete($h->{'buffer'});
6513 $rv = Net::SSLeay::read($h->{'ssl_con'}, $_[1]);
6519 read($h->{'fh'}, $rv, $_[1]) > 0 || return undef;
6522 my $fh = $h->{'fh'};
6526 $rv = undef if ($rv eq "");
6530 =head2 write_http_connection(&handle, [data+])
6532 Writes the given data to the given HTTP connection handle.
6535 sub write_http_connection
6538 my $fh = $h->{'fh'};
6540 if ($h->{'ssl_ctx'}) {
6541 foreach my $s (@_) {
6542 my $ok = Net::SSLeay::write($h->{'ssl_con'}, $s);
6543 $allok = 0 if (!$ok);
6547 my $ok = (print $fh @_);
6548 $allok = 0 if (!$ok);
6553 =head2 close_http_connection(&handle)
6555 Closes a connection to an HTTP server, identified by the given handle.
6558 sub close_http_connection
6564 =head2 clean_environment
6566 Deletes any environment variables inherited from miniserv so that they
6567 won't be passed to programs started by webmin. This is useful when calling
6568 programs that check for CGI-related environment variables and modify their
6569 behaviour, and to avoid passing sensitive variables to un-trusted programs.
6572 sub clean_environment
6574 %UNCLEAN_ENV = %ENV;
6575 foreach my $k (keys %ENV) {
6576 if ($k =~ /^(HTTP|VIRTUALSERVER|QUOTA|USERADMIN)_/) {
6580 foreach my $e ('WEBMIN_CONFIG', 'SERVER_NAME', 'CONTENT_TYPE', 'REQUEST_URI',
6581 'PATH_INFO', 'WEBMIN_VAR', 'REQUEST_METHOD', 'GATEWAY_INTERFACE',
6582 'QUERY_STRING', 'REMOTE_USER', 'SERVER_SOFTWARE', 'SERVER_PROTOCOL',
6583 'REMOTE_HOST', 'SERVER_PORT', 'DOCUMENT_ROOT', 'SERVER_ROOT',
6584 'MINISERV_CONFIG', 'SCRIPT_NAME', 'SERVER_ADMIN', 'CONTENT_LENGTH',
6585 'HTTPS', 'FOREIGN_MODULE_NAME', 'FOREIGN_ROOT_DIRECTORY',
6586 'SCRIPT_FILENAME', 'PATH_TRANSLATED', 'BASE_REMOTE_USER',
6587 'DOCUMENT_REALROOT', 'MINISERV_CONFIG', 'MYSQL_PWD',
6593 =head2 reset_environment
6595 Puts the environment back how it was before clean_environment was callled.
6598 sub reset_environment
6601 foreach my $k (keys %UNCLEAN_ENV) {
6602 $ENV{$k} = $UNCLEAN_ENV{$k};
6604 undef(%UNCLEAN_ENV);
6608 =head2 progress_callback
6610 Never called directly, but useful for passing to &http_download to print
6611 out progress of an HTTP request.
6614 sub progress_callback
6616 if (defined(&theme_progress_callback)) {
6617 # Call the theme override
6618 return &theme_progress_callback(@_);
6622 print $progress_callback_prefix;
6624 $progress_size = $_[1];
6625 $progress_step = int($_[1] / 10);
6626 print &text('progress_size2', $progress_callback_url,
6627 &nice_size($progress_size)),"<br>\n";
6630 print &text('progress_nosize', $progress_callback_url),"<br>\n";
6632 $last_progress_time = $last_progress_size = undef;
6634 elsif ($_[0] == 3) {
6636 my $sp = $progress_callback_prefix.(" " x 5);
6637 if ($progress_size) {
6638 # And we have a size to compare against
6639 my $st = int(($_[1] * 10) / $progress_size);
6640 my $time_now = time();
6641 if ($st != $progress_step ||
6642 $time_now - $last_progress_time > 60) {
6643 # Show progress every 10% or 60 seconds
6644 print $sp,&text('progress_datan', &nice_size($_[1]),
6645 int($_[1]*100/$progress_size)),"<br>\n";
6646 $last_progress_time = $time_now;
6648 $progress_step = $st;
6651 # No total size .. so only show in 100k jumps
6652 if ($_[1] > $last_progress_size+100*1024) {
6653 print $sp,&text('progress_data2n',
6654 &nice_size($_[1])),"<br>\n";
6655 $last_progress_size = $_[1];
6659 elsif ($_[0] == 4) {
6660 # All done downloading
6661 print $progress_callback_prefix,&text('progress_done'),"<br>\n";
6663 elsif ($_[0] == 5) {
6664 # Got new location after redirect
6665 $progress_callback_url = $_[1];
6667 elsif ($_[0] == 6) {
6669 $progress_callback_url = $_[1];
6670 print &text('progress_incache', $progress_callback_url),"<br>\n";
6674 =head2 switch_to_remote_user
6676 Changes the user and group of the current process to that of the unix user
6677 with the same name as the current webmin login, or fails if there is none.
6678 This should be called by Usermin module scripts that only need to run with
6679 limited permissions.
6682 sub switch_to_remote_user
6684 @remote_user_info = $remote_user ? getpwnam($remote_user) :
6686 @remote_user_info || &error(&text('switch_remote_euser', $remote_user));
6687 &create_missing_homedir(\@remote_user_info);
6689 &switch_to_unix_user(\@remote_user_info);
6690 $ENV{'USER'} = $ENV{'LOGNAME'} = $remote_user;
6691 $ENV{'HOME'} = $remote_user_info[7];
6693 # Export global variables to caller
6694 if ($main::export_to_caller) {
6695 my ($callpkg) = caller();
6696 eval "\@${callpkg}::remote_user_info = \@remote_user_info";
6700 =head2 switch_to_unix_user(&user-details)
6702 Switches the current process to the UID and group ID from the given list
6703 of user details, which must be in the format returned by getpwnam.
6706 sub switch_to_unix_user
6709 if (!defined($uinfo->[0])) {
6710 # No username given, so just use given GID
6711 ($(, $)) = ( $uinfo->[3], "$uinfo->[3] $uinfo->[3]" );
6714 # Use all groups from user
6715 ($(, $)) = ( $uinfo->[3],
6716 "$uinfo->[3] ".join(" ", $uinfo->[3],
6717 &other_groups($uinfo->[0])) );
6720 POSIX::setuid($uinfo->[2]);
6722 if ($< != $uinfo->[2] || $> != $uinfo->[2]) {
6723 ($>, $<) = ( $uinfo->[2], $uinfo->[2] );
6727 =head2 eval_as_unix_user(username, &code)
6729 Runs some code fragment with the effective UID and GID switch to that
6730 of the given Unix user, so that file IO takes place with his permissions.
6734 sub eval_as_unix_user
6736 my ($user, $code) = @_;
6737 my @uinfo = getpwnam($user);
6738 if (!scalar(@uinfo)) {
6739 &error("eval_as_unix_user called with invalid user $user");
6741 $) = $uinfo[3]." ".join(" ", $uinfo[3], &other_groups($user));
6745 local $main::error_must_die = 1;
6752 $err =~ s/\s+at\s+(\/\S+)\s+line\s+(\d+)\.?//;
6755 return wantarray ? @rv : $rv[0];
6758 =head2 create_user_config_dirs
6760 Creates per-user config directories and sets $user_config_directory and
6761 $user_module_config_directory to them. Also reads per-user module configs
6762 into %userconfig. This should be called by Usermin module scripts that need
6763 to store per-user preferences or other settings.
6766 sub create_user_config_dirs
6768 return if (!$gconfig{'userconfig'});
6769 my @uinfo = @remote_user_info ? @remote_user_info : getpwnam($remote_user);
6770 return if (!@uinfo || !$uinfo[7]);
6771 &create_missing_homedir(\@uinfo);
6772 $user_config_directory = "$uinfo[7]/$gconfig{'userconfig'}";
6773 if (!-d $user_config_directory) {
6774 mkdir($user_config_directory, 0700) ||
6775 &error("Failed to create $user_config_directory : $!");
6776 if ($< == 0 && $uinfo[2]) {
6777 chown($uinfo[2], $uinfo[3], $user_config_directory);
6780 if (&get_module_name()) {
6781 $user_module_config_directory = $user_config_directory."/".
6783 if (!-d $user_module_config_directory) {
6784 mkdir($user_module_config_directory, 0700) ||
6785 &error("Failed to create $user_module_config_directory : $!");
6786 if ($< == 0 && $uinfo[2]) {
6787 chown($uinfo[2], $uinfo[3], $user_config_directory);
6791 &read_file_cached("$module_root_directory/defaultuconfig",
6793 &read_file_cached("$module_config_directory/uconfig", \%userconfig);
6794 &read_file_cached("$user_module_config_directory/config",
6798 # Export global variables to caller
6799 if ($main::export_to_caller) {
6800 my ($callpkg) = caller();
6801 foreach my $v ('$user_config_directory',
6802 '$user_module_config_directory', '%userconfig') {
6803 my ($vt, $vn) = split('', $v, 2);
6804 eval "${vt}${callpkg}::${vn} = ${vt}${vn}";
6809 =head2 create_missing_homedir(&uinfo)
6811 If auto homedir creation is enabled, create one for this user if needed.
6812 For internal use only.
6815 sub create_missing_homedir
6818 if (!-e $uinfo->[7] && $gconfig{'create_homedir'}) {
6819 # Use has no home dir .. make one
6820 system("mkdir -p ".quotemeta($uinfo->[7]));
6821 chown($uinfo->[2], $uinfo->[3], $uinfo->[7]);
6822 if ($gconfig{'create_homedir_perms'} ne '') {
6823 chmod(oct($gconfig{'create_homedir_perms'}), $uinfo->[7]);
6828 =head2 filter_javascript(text)
6830 Disables all javascript <script>, onClick= and so on tags in the given HTML,
6831 and returns the new HTML. Useful for displaying HTML from an un-trusted source.
6834 sub filter_javascript
6837 $rv =~ s/<\s*script[^>]*>([\000-\377]*?)<\s*\/script\s*>//gi;
6838 $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;
6839 $rv =~ s/(javascript:)/x$1/gi;
6840 $rv =~ s/(vbscript:)/x$1/gi;
6844 =head2 resolve_links(path)
6846 Given a path that may contain symbolic links, returns the real path.
6852 $path =~ s/\/+/\//g;
6853 $path =~ s/\/$// if ($path ne "/");
6854 my @p = split(/\/+/, $path);
6856 for(my $i=0; $i<@p; $i++) {
6857 my $sofar = "/".join("/", @p[0..$i]);
6858 my $lnk = readlink($sofar);
6859 if ($lnk eq $sofar) {
6860 # Link to itself! Cannot do anything more really ..
6863 elsif ($lnk =~ /^\//) {
6864 # Link is absolute..
6865 return &resolve_links($lnk."/".join("/", @p[$i+1 .. $#p]));
6869 return &resolve_links("/".join("/", @p[0..$i-1])."/".$lnk."/".join("/", @p[$i+1 .. $#p]));
6875 =head2 simplify_path(path, bogus)
6877 Given a path, maybe containing elements ".." and "." , convert it to a
6878 clean, absolute form. Returns undef if this is not possible.
6886 my @bits = split(/\/+/, $dir);
6889 foreach my $b (@bits) {
6893 elsif ($b eq "..") {
6895 if (scalar(@fixedbits) == 0) {
6896 # Cannot! Already at root!
6903 push(@fixedbits, $b);
6906 return "/".join('/', @fixedbits);
6909 =head2 same_file(file1, file2)
6911 Returns 1 if two files are actually the same
6916 return 1 if ($_[0] eq $_[1]);
6917 return 0 if ($_[0] !~ /^\// || $_[1] !~ /^\//);
6918 my @stat1 = $stat_cache{$_[0]} ? @{$stat_cache{$_[0]}}
6919 : (@{$stat_cache{$_[0]}} = stat($_[0]));
6920 my @stat2 = $stat_cache{$_[1]} ? @{$stat_cache{$_[1]}}
6921 : (@{$stat_cache{$_[1]}} = stat($_[1]));
6922 return 0 if (!@stat1 || !@stat2);
6923 return $stat1[0] == $stat2[0] && $stat1[1] == $stat2[1];
6926 =head2 flush_webmin_caches
6928 Clears all in-memory and on-disk caches used by Webmin.
6931 sub flush_webmin_caches
6933 undef(%main::read_file_cache);
6934 undef(%main::acl_hash_cache);
6935 undef(%main::acl_array_cache);
6936 undef(%main::has_command_cache);
6937 undef(@main::list_languages_cache);
6938 undef($main::got_list_usermods_cache);
6939 undef(@main::list_usermods_cache);
6940 undef(%main::foreign_installed_cache);
6941 unlink("$config_directory/module.infos.cache");
6942 &get_all_module_infos();
6945 =head2 list_usermods
6947 Returns a list of additional module restrictions. For internal use in
6953 if (!$main::got_list_usermods_cache) {
6954 @main::list_usermods_cache = ( );
6956 open(USERMODS, "$config_directory/usermin.mods");
6958 if (/^([^:]+):(\+|-|):(.*)/) {
6959 push(@main::list_usermods_cache,
6960 [ $1, $2, [ split(/\s+/, $3) ] ]);
6964 $main::got_list_usermods_cache = 1;
6966 return @main::list_usermods_cache;
6969 =head2 available_usermods(&allmods, &usermods)
6971 Returns a list of modules that are available to the given user, based
6972 on usermod additional/subtractions. For internal use by Usermin only.
6975 sub available_usermods
6977 return @{$_[0]} if (!@{$_[1]});
6979 my %mods = map { $_->{'dir'}, 1 } @{$_[0]};
6980 my @uinfo = @remote_user_info;
6981 @uinfo = getpwnam($remote_user) if (!@uinfo);
6982 foreach my $u (@{$_[1]}) {
6984 if ($u->[0] eq "*" || $u->[0] eq $remote_user) {
6987 elsif ($u->[0] =~ /^\@(.*)$/) {
6988 # Check for group membership
6989 my @ginfo = getgrnam($1);
6990 $applies++ if (@ginfo && ($ginfo[2] == $uinfo[3] ||
6991 &indexof($remote_user, split(/\s+/, $ginfo[3])) >= 0));
6993 elsif ($u->[0] =~ /^\//) {
6994 # Check users and groups in file
6996 open(USERFILE, $u->[0]);
6999 if ($_ eq $remote_user) {
7002 elsif (/^\@(.*)$/) {
7003 my @ginfo = getgrnam($1);
7005 if (@ginfo && ($ginfo[2] == $uinfo[3] ||
7006 &indexof($remote_user,
7007 split(/\s+/, $ginfo[3])) >= 0));
7014 if ($u->[1] eq "+") {
7015 map { $mods{$_}++ } @{$u->[2]};
7017 elsif ($u->[1] eq "-") {
7018 map { delete($mods{$_}) } @{$u->[2]};
7022 map { $mods{$_}++ } @{$u->[2]};
7026 return grep { $mods{$_->{'dir'}} } @{$_[0]};
7029 =head2 get_available_module_infos(nocache)
7031 Returns a list of modules available to the current user, based on
7032 operating system support, access control and usermod restrictions. Useful
7033 in themes that need to display a list of modules the user can use.
7034 Each element of the returned array is a hash reference in the same format as
7035 returned by get_module_info.
7038 sub get_available_module_infos
7041 &read_acl(\%acl, \%uacl);
7042 my $risk = $gconfig{'risk_'.$base_remote_user};
7044 foreach my $minfo (&get_all_module_infos($_[0])) {
7045 next if (!&check_os_support($minfo));
7047 # Check module risk level
7048 next if ($risk ne 'high' && $minfo->{'risk'} &&
7049 $minfo->{'risk'} !~ /$risk/);
7053 next if (!$acl{$base_remote_user,$minfo->{'dir'}} &&
7054 !$acl{$base_remote_user,"*"});
7056 next if (&is_readonly_mode() && !$minfo->{'readonly'});
7060 # Check usermod restrictions
7061 my @usermods = &list_usermods();
7062 @rv = sort { $a->{'desc'} cmp $b->{'desc'} }
7063 &available_usermods(\@rv, \@usermods);
7065 # Check RBAC restrictions
7067 foreach my $m (@rv) {
7068 if (&supports_rbac($m->{'dir'}) &&
7069 &use_rbac_module_acl(undef, $m->{'dir'})) {
7070 local $rbacs = &get_rbac_module_acl($remote_user,
7078 # Module or system doesn't support RBAC
7079 push(@rbacrv, $m) if (!$gconfig{'rbacdeny_'.$base_remote_user});
7085 if (defined(&theme_foreign_available)) {
7086 foreach my $m (@rbacrv) {
7087 if (&theme_foreign_available($m->{'dir'})) {
7096 # Check licence module vetos
7098 if ($main::licence_module) {
7099 foreach my $m (@themerv) {
7100 if (&foreign_call($main::licence_module,
7101 "check_module_licence", $m->{'dir'})) {
7113 =head2 get_visible_module_infos(nocache)
7115 Like get_available_module_infos, but excludes hidden modules from the list.
7116 Each element of the returned array is a hash reference in the same format as
7117 returned by get_module_info.
7120 sub get_visible_module_infos
7123 my $pn = &get_product_name();
7124 return grep { !$_->{'hidden'} &&
7125 !$_->{$pn.'_hidden'} } &get_available_module_infos($nocache);
7128 =head2 get_visible_modules_categories(nocache)
7130 Returns a list of Webmin module categories, each of which is a hash ref
7131 with 'code', 'desc' and 'modules' keys. The modules value is an array ref
7132 of modules in the category, in the format returned by get_module_info.
7133 Un-used modules are automatically assigned to the 'unused' category, and
7134 those with no category are put into 'others'.
7137 sub get_visible_modules_categories
7140 my @mods = &get_visible_module_infos($nocache);
7142 if (&get_product_name() eq 'webmin') {
7143 @unmods = grep { $_->{'installed'} eq '0' } @mods;
7144 @mods = grep { $_->{'installed'} ne '0' } @mods;
7146 my %cats = &list_categories(\@mods);
7148 foreach my $c (keys %cats) {
7149 my $cat = { 'code' => $c || 'other',
7150 'desc' => $cats{$c} };
7151 $cat->{'modules'} = [ grep { $_->{'category'} eq $c } @mods ];
7154 @rv = sort { ($b->{'code'} eq "others" ? "" : $b->{'code'}) cmp
7155 ($a->{'code'} eq "others" ? "" : $a->{'code'}) } @rv;
7157 # Add un-installed modules in magic category
7158 my $cat = { 'code' => 'unused',
7159 'desc' => $text{'main_unused'},
7161 'modules' => \@unmods };
7167 =head2 is_under_directory(directory, file)
7169 Returns 1 if the given file is under the specified directory, 0 if not.
7170 Symlinks are taken into account in the file to find it's 'real' location.
7173 sub is_under_directory
7175 my ($dir, $file) = @_;
7176 return 1 if ($dir eq "/");
7177 return 0 if ($file =~ /\.\./);
7178 my $ld = &resolve_links($dir);
7180 return &is_under_directory($ld, $file);
7182 my $lp = &resolve_links($file);
7184 return &is_under_directory($dir, $lp);
7186 return 0 if (length($file) < length($dir));
7187 return 1 if ($dir eq $file);
7189 return substr($file, 0, length($dir)) eq $dir;
7192 =head2 parse_http_url(url, [basehost, baseport, basepage, basessl])
7194 Given an absolute URL, returns the host, port, page and ssl flag components.
7195 Relative URLs can also be parsed, if the base information is provided.
7200 if ($_[0] =~ /^(http|https):\/\/([^:\/]+)(:(\d+))?(\/\S*)?$/) {
7202 my $ssl = $1 eq 'https';
7203 return ($2, $3 ? $4 : $ssl ? 443 : 80, $5 || "/", $ssl);
7209 elsif ($_[0] =~ /^\/\S*$/) {
7210 # A relative to the server URL
7211 return ($_[1], $_[2], $_[0], $_[4]);
7214 # A relative to the directory URL
7216 $page =~ s/[^\/]+$//;
7217 return ($_[1], $_[2], $page.$_[0], $_[4]);
7221 =head2 check_clicks_function
7223 Returns HTML for a JavaScript function called check_clicks that returns
7224 true when first called, but false subsequently. Useful on onClick for
7225 critical buttons. Deprecated, as this method of preventing duplicate actions
7229 sub check_clicks_function
7234 function check_clicks(form)
7241 for(i=0; i<form.length; i++)
7242 form.elements[i].disabled = true;
7251 =head2 load_entities_map
7253 Returns a hash ref containing mappings between HTML entities (like ouml) and
7254 ascii values (like 246). Mainly for internal use.
7257 sub load_entities_map
7259 if (!%entities_map_cache) {
7261 open(EMAP, "$root_directory/entities_map.txt");
7263 if (/^(\d+)\s+(\S+)/) {
7264 $entities_map_cache{$2} = $1;
7269 return \%entities_map_cache;
7272 =head2 entities_to_ascii(string)
7274 Given a string containing HTML entities like ö and 7, replace them
7275 with their ASCII equivalents.
7278 sub entities_to_ascii
7281 my $emap = &load_entities_map();
7282 $str =~ s/&([a-z]+);/chr($emap->{$1})/ge;
7283 $str =~ s/&#(\d+);/chr($1)/ge;
7287 =head2 get_product_name
7289 Returns either 'webmin' or 'usermin', depending on which program the current
7290 module is in. Useful for modules that can be installed into either.
7293 sub get_product_name
7295 return $gconfig{'product'} if (defined($gconfig{'product'}));
7296 return defined($gconfig{'userconfig'}) ? 'usermin' : 'webmin';
7301 Returns the character set for the current language, such as iso-8859-1.
7306 my $charset = defined($gconfig{'charset'}) ? $gconfig{'charset'} :
7307 $current_lang_info->{'charset'} ?
7308 $current_lang_info->{'charset'} : $default_charset;
7312 =head2 get_display_hostname
7314 Returns the system's hostname for UI display purposes. This may be different
7315 from the actual hostname if you administrator has configured it so in the
7316 Webmin Configuration module.
7319 sub get_display_hostname
7321 if ($gconfig{'hostnamemode'} == 0) {
7322 return &get_system_hostname();
7324 elsif ($gconfig{'hostnamemode'} == 3) {
7325 return $gconfig{'hostnamedisplay'};
7328 my $h = $ENV{'HTTP_HOST'};
7330 if ($gconfig{'hostnamemode'} == 2) {
7331 $h =~ s/^(www|ftp|mail)\.//i;
7337 =head2 save_module_config([&config], [modulename])
7339 Saves the configuration for some module. The config parameter is an optional
7340 hash reference of names and values to save, which defaults to the global
7341 %config hash. The modulename parameter is the module to update the config
7342 file, which defaults to the current module.
7345 sub save_module_config
7347 my $c = $_[0] || { &get_module_variable('%config') };
7348 my $m = defined($_[1]) ? $_[1] : &get_module_name();
7349 &write_file("$config_directory/$m/config", $c);
7352 =head2 save_user_module_config([&config], [modulename])
7354 Saves the user's Usermin preferences for some module. The config parameter is
7355 an optional hash reference of names and values to save, which defaults to the
7356 global %userconfig hash. The modulename parameter is the module to update the
7357 config file, which defaults to the current module.
7360 sub save_user_module_config
7362 my $c = $_[0] || { &get_module_variable('%userconfig') };
7363 my $m = $_[1] || &get_module_name();
7364 my $ucd = $user_config_directory;
7366 my @uinfo = @remote_user_info ? @remote_user_info
7367 : getpwnam($remote_user);
7368 return if (!@uinfo || !$uinfo[7]);
7369 $ucd = "$uinfo[7]/$gconfig{'userconfig'}";
7371 &write_file("$ucd/$m/config", $c);
7374 =head2 nice_size(bytes, [min])
7376 Converts a number of bytes into a number followed by a suffix like GB, MB
7377 or kB. Rounding is to two decimal digits. The optional min parameter sets the
7378 smallest units to use - so you could pass 1024*1024 to never show bytes or kB.
7383 my ($units, $uname);
7384 if (abs($_[0]) > 1024*1024*1024*1024 || $_[1] >= 1024*1024*1024*1024) {
7385 $units = 1024*1024*1024*1024;
7388 elsif (abs($_[0]) > 1024*1024*1024 || $_[1] >= 1024*1024*1024) {
7389 $units = 1024*1024*1024;
7392 elsif (abs($_[0]) > 1024*1024 || $_[1] >= 1024*1024) {
7396 elsif (abs($_[0]) > 1024 || $_[1] >= 1024) {
7404 my $sz = sprintf("%.2f", ($_[0]*1.0 / $units));
7406 return $sz." ".$uname;
7409 =head2 get_perl_path
7411 Returns the path to Perl currently in use, such as /usr/bin/perl.
7416 if (open(PERL, "$config_directory/perl-path")) {
7422 return $^X if (-x $^X);
7423 return &has_command("perl");
7426 =head2 get_goto_module([&mods])
7428 Returns the details of a module that the current user should be re-directed
7429 to after logging in, or undef if none. Useful for themes.
7434 my @mods = $_[0] ? @{$_[0]} : &get_visible_module_infos();
7435 if ($gconfig{'gotomodule'}) {
7436 my ($goto) = grep { $_->{'dir'} eq $gconfig{'gotomodule'} } @mods;
7437 return $goto if ($goto);
7439 if (@mods == 1 && $gconfig{'gotoone'}) {
7445 =head2 select_all_link(field, form, [text])
7447 Returns HTML for a 'Select all' link that uses Javascript to select
7448 multiple checkboxes with the same name. The parameters are :
7450 =item field - Name of the checkbox inputs.
7452 =item form - Index of the form on the page.
7454 =item text - Message for the link, defaulting to 'Select all'.
7459 return &theme_select_all_link(@_) if (defined(&theme_select_all_link));
7460 my ($field, $form, $text) = @_;
7462 $text ||= $text{'ui_selall'};
7463 return "<a class='select_all' href='#' onClick='document.forms[$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>";
7466 =head2 select_invert_link(field, form, text)
7468 Returns HTML for an 'Invert selection' link that uses Javascript to invert the
7469 selection on multiple checkboxes with the same name. The parameters are :
7471 =item field - Name of the checkbox inputs.
7473 =item form - Index of the form on the page.
7475 =item text - Message for the link, defaulting to 'Invert selection'.
7478 sub select_invert_link
7480 return &theme_select_invert_link(@_) if (defined(&theme_select_invert_link));
7481 my ($field, $form, $text) = @_;
7483 $text ||= $text{'ui_selinv'};
7484 return "<a class='select_invert' href='#' onClick='document.forms[$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>";
7487 =head2 select_rows_link(field, form, text, &rows)
7489 Returns HTML for a link that uses Javascript to select rows with particular
7490 values for their checkboxes. The parameters are :
7492 =item field - Name of the checkbox inputs.
7494 =item form - Index of the form on the page.
7496 =item text - Message for the link, de
7498 =item rows - Reference to an array of 1 or 0 values, indicating which rows to check.
7501 sub select_rows_link
7503 return &theme_select_rows_link(@_) if (defined(&theme_select_rows_link));
7504 my ($field, $form, $text, $rows) = @_;
7506 my $js = "var sel = { ".join(",", map { "\""."e_escape($_)."\":1" } @$rows)." }; ";
7507 $js .= "for(var i=0; i<document.forms[$form].${field}.length; i++) { var r = document.forms[$form].${field}[i]; r.checked = sel[r.value]; } ";
7508 $js .= "return false;";
7509 return "<a href='#' onClick='$js'>$text</a>";
7512 =head2 check_pid_file(file)
7514 Given a pid file, returns the PID it contains if the process is running.
7519 open(PIDFILE, $_[0]) || return undef;
7520 my $pid = <PIDFILE>;
7522 $pid =~ /^\s*(\d+)/ || return undef;
7523 kill(0, $1) || return undef;
7529 Return the local os-specific library name to this module. For internal use only.
7534 my $mn = &get_module_name();
7535 my $md = &module_root_directory($mn);
7536 if (-r "$md/$mn-$gconfig{'os_type'}-$gconfig{'os_version'}-lib.pl") {
7537 return "$mn-$gconfig{'os_type'}-$gconfig{'os_version'}-lib.pl";
7539 elsif (-r "$md/$mn-$gconfig{'os_type'}-lib.pl") {
7540 return "$mn-$gconfig{'os_type'}-lib.pl";
7542 elsif (-r "$md/$mn-generic-lib.pl") {
7543 return "$mn-generic-lib.pl";
7550 =head2 module_root_directory(module)
7552 Given a module name, returns its root directory. On a typical Webmin install,
7553 all modules are under the same directory - but it is theoretically possible to
7557 sub module_root_directory
7559 my $d = ref($_[0]) ? $_[0]->{'dir'} : $_[0];
7560 if (@root_directories > 1) {
7561 foreach my $r (@root_directories) {
7567 return "$root_directories[0]/$d";
7570 =head2 list_mime_types
7572 Returns a list of all known MIME types and their extensions, as a list of hash
7573 references with keys :
7575 =item type - The MIME type, like text/plain.
7577 =item exts - A list of extensions, like .doc and .avi.
7579 =item desc - A human-readable description for the MIME type.
7584 if (!@list_mime_types_cache) {
7586 open(MIME, "$root_directory/mime.types");
7590 if (s/#\s*(.*)$//g) {
7593 my ($type, @exts) = split(/\s+/);
7595 push(@list_mime_types_cache, { 'type' => $type,
7602 return @list_mime_types_cache;
7605 =head2 guess_mime_type(filename, [default])
7607 Given a file name like xxx.gif or foo.html, returns a guessed MIME type.
7608 The optional default parameter sets a default type of use if none is found,
7609 which defaults to application/octet-stream.
7614 if ($_[0] =~ /\.([A-Za-z0-9\-]+)$/) {
7616 foreach my $t (&list_mime_types()) {
7617 foreach my $e (@{$t->{'exts'}}) {
7618 return $t->{'type'} if (lc($e) eq lc($ext));
7622 return @_ > 1 ? $_[1] : "application/octet-stream";
7625 =head2 open_tempfile([handle], file, [no-error], [no-tempfile], [safe?])
7627 Opens a file handle for writing to a temporary file, which will only be
7628 renamed over the real file when the handle is closed. This allows critical
7629 files like /etc/shadow to be updated safely, even if writing fails part way
7630 through due to lack of disk space. The parameters are :
7632 =item handle - File handle to open, as you would use in Perl's open function.
7634 =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.
7636 =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 $! with the error code.
7638 =item no-tempfile - If set to 1, writing will be direct to the file instead of using a temporary file.
7640 =item safe - Indicates to users in read-only mode that this write is safe and non-destructive.
7646 # Just getting a temp file
7647 if (!defined($main::open_tempfiles{$_[0]})) {
7648 $_[0] =~ /^(.*)\/(.*)$/ || return $_[0];
7649 my $dir = $1 || "/";
7650 my $tmp = "$dir/$2.webmintmp.$$";
7651 $main::open_tempfiles{$_[0]} = $tmp;
7652 push(@main::temporary_files, $tmp);
7654 return $main::open_tempfiles{$_[0]};
7658 my ($fh, $file, $noerror, $notemp, $safe) = @_;
7659 $fh = &callers_package($fh);
7661 my %gaccess = &get_module_acl(undef, "");
7662 my $db = $gconfig{'debug_what_write'};
7663 if ($file =~ /\r|\n|\0/) {
7664 if ($noerror) { return 0; }
7665 else { &error("Filename contains invalid characters"); }
7667 if (&is_readonly_mode() && $file =~ />/ && !$safe) {
7668 # Read-only mode .. veto all writes
7669 print STDERR "vetoing write to $file\n";
7670 return open($fh, ">$null_file");
7672 elsif ($file =~ /^(>|>>|)nul$/i) {
7673 # Write to Windows null device
7674 &webmin_debug_log($1 eq ">" ? "WRITE" :
7675 $1 eq ">>" ? "APPEND" : "READ", "nul") if ($db);
7677 elsif ($file =~ /^(>|>>)(\/dev\/.*)/ || lc($file) eq "nul") {
7678 # Writes to /dev/null or TTYs don't need to be handled
7679 &webmin_debug_log($1 eq ">" ? "WRITE" : "APPEND", $2) if ($db);
7680 return open($fh, $file);
7682 elsif ($file =~ /^>\s*(([a-zA-Z]:)?\/.*)$/ && !$notemp) {
7683 &webmin_debug_log("WRITE", $1) if ($db);
7684 # Over-writing a file, via a temp file
7686 $file = &translate_filename($file);
7688 # Open the link target instead
7689 $file = &resolve_links($file);
7692 # Cannot open a directory!
7693 if ($noerror) { return 0; }
7694 else { &error("Cannot write to directory $file"); }
7696 my $tmp = &open_tempfile($file);
7697 my $ex = open($fh, ">$tmp");
7698 if (!$ex && $! =~ /permission/i) {
7699 # Could not open temp file .. try opening actual file
7701 $ex = open($fh, ">$file");
7702 delete($main::open_tempfiles{$file});
7705 $main::open_temphandles{$fh} = $file;
7708 if (!$ex && !$noerror) {
7709 &error(&text("efileopen", $file, $!));
7713 elsif ($file =~ /^>\s*(([a-zA-Z]:)?\/.*)$/ && $notemp) {
7714 # Just writing direct to a file
7715 &webmin_debug_log("WRITE", $1) if ($db);
7717 $file = &translate_filename($file);
7718 my @old_attributes = &get_clear_file_attributes($file);
7719 my $ex = open($fh, ">$file");
7720 &reset_file_attributes($file, \@old_attributes);
7721 $main::open_temphandles{$fh} = $file;
7722 if (!$ex && !$noerror) {
7723 &error(&text("efileopen", $file, $!));
7728 elsif ($file =~ /^>>\s*(([a-zA-Z]:)?\/.*)$/) {
7729 # Appending to a file .. nothing special to do
7730 &webmin_debug_log("APPEND", $1) if ($db);
7732 $file = &translate_filename($file);
7733 my @old_attributes = &get_clear_file_attributes($file);
7734 my $ex = open($fh, ">>$file");
7735 &reset_file_attributes($file, \@old_attributes);
7736 $main::open_temphandles{$fh} = $file;
7737 if (!$ex && !$noerror) {
7738 &error(&text("efileopen", $file, $!));
7743 elsif ($file =~ /^([a-zA-Z]:)?\//) {
7744 # Read mode .. nothing to do here
7745 &webmin_debug_log("READ", $file) if ($db);
7746 $file = &translate_filename($file);
7747 return open($fh, $file);
7749 elsif ($file eq ">" || $file eq ">>") {
7750 my ($package, $filename, $line) = caller;
7751 if ($noerror) { return 0; }
7752 else { &error("Missing file to open at ${package}::${filename} line $line"); }
7755 my ($package, $filename, $line) = caller;
7756 &error("Unsupported file or mode $file at ${package}::${filename} line $line");
7761 =head2 close_tempfile(file|handle)
7763 Copies a temp file to the actual file, assuming that all writes were
7764 successful. The handle must have been one passed to open_tempfile.
7770 my $fh = &callers_package($_[0]);
7772 if (defined($file = $main::open_temphandles{$fh})) {
7774 close($fh) || &error(&text("efileclose", $file, $!));
7775 delete($main::open_temphandles{$fh});
7776 return &close_tempfile($file);
7778 elsif (defined($main::open_tempfiles{$_[0]})) {
7780 &webmin_debug_log("CLOSE", $_[0]) if ($gconfig{'debug_what_write'});
7781 my @st = stat($_[0]);
7782 if (&is_selinux_enabled() && &has_command("chcon")) {
7783 # Set original security context
7784 system("chcon --reference=".quotemeta($_[0]).
7785 " ".quotemeta($main::open_tempfiles{$_[0]}).
7786 " >/dev/null 2>&1");
7788 my @old_attributes = &get_clear_file_attributes($_[0]);
7789 rename($main::open_tempfiles{$_[0]}, $_[0]) || &error("Failed to replace $_[0] with $main::open_tempfiles{$_[0]} : $!");
7791 # Set original permissions and ownership
7792 chmod($st[2], $_[0]);
7793 chown($st[4], $st[5], $_[0]);
7795 &reset_file_attributes($_[0], \@old_attributes);
7796 delete($main::open_tempfiles{$_[0]});
7797 @main::temporary_files = grep { $_ ne $main::open_tempfiles{$_[0]} } @main::temporary_files;
7798 if ($main::open_templocks{$_[0]}) {
7799 &unlock_file($_[0]);
7800 delete($main::open_templocks{$_[0]});
7805 # Must be closing a handle not associated with a file
7811 =head2 print_tempfile(handle, text, ...)
7813 Like the normal print function, but calls &error on failure. Useful when
7814 combined with open_tempfile, to ensure that a criticial file is never
7815 only partially written.
7820 my ($fh, @args) = @_;
7821 $fh = &callers_package($fh);
7822 (print $fh @args) || &error(&text("efilewrite",
7823 $main::open_temphandles{$fh} || $fh, $!));
7826 =head2 is_selinux_enabled
7828 Returns 1 if SElinux is supported on this system and enabled, 0 if not.
7831 sub is_selinux_enabled
7833 if (!defined($main::selinux_enabled_cache)) {
7835 if ($gconfig{'os_type'} !~ /-linux$/) {
7836 # Not on linux, so no way
7837 $main::selinux_enabled_cache = 0;
7839 elsif (&read_env_file("/etc/selinux/config", \%seconfig)) {
7840 # Use global config file
7841 $main::selinux_enabled_cache =
7842 $seconfig{'SELINUX'} eq 'disabled' ||
7843 !$seconfig{'SELINUX'} ? 0 : 1;
7846 # Use selinuxenabled command
7847 #$selinux_enabled_cache =
7848 # system("selinuxenabled >/dev/null 2>&1") ? 0 : 1;
7849 $main::selinux_enabled_cache = 0;
7852 return $main::selinux_enabled_cache;
7855 =head2 get_clear_file_attributes(file)
7857 Finds file attributes that may prevent writing, clears them and returns them
7858 as a list. May call error. Mainly for internal use by open_tempfile and
7862 sub get_clear_file_attributes
7866 if ($gconfig{'chattr'}) {
7867 # Get original immutable bit
7868 my $out = &backquote_command(
7869 "lsattr ".quotemeta($file)." 2>/dev/null");
7871 $out =~ s/\s\S+\n//;
7872 @old_attributes = grep { $_ ne '-' } split(//, $out);
7874 if (&indexof("i", @old_attributes) >= 0) {
7875 my $err = &backquote_logged(
7876 "chattr -i ".quotemeta($file)." 2>&1");
7878 &error("Failed to remove immutable bit on ".
7883 return @old_attributes;
7886 =head2 reset_file_attributes(file, &attributes)
7888 Put back cleared attributes on some file. May call error. Mainly for internal
7889 use by close_tempfile.
7892 sub reset_file_attributes
7894 my ($file, $old_attributes) = @_;
7895 if (&indexof("i", @$old_attributes) >= 0) {
7896 my $err = &backquote_logged(
7897 "chattr +i ".quotemeta($file)." 2>&1");
7899 &error("Failed to restore immutable bit on ".
7905 =head2 cleanup_tempnames
7907 Remove all temporary files generated using transname. Typically only called
7908 internally when a Webmin script exits.
7911 sub cleanup_tempnames
7913 foreach my $t (@main::temporary_files) {
7916 @main::temporary_files = ( );
7919 =head2 open_lock_tempfile([handle], file, [no-error])
7921 Returns a temporary file for writing to some actual file, and also locks it.
7922 Effectively the same as calling lock_file and open_tempfile on the same file,
7923 but calls the unlock for you automatically when it is closed.
7926 sub open_lock_tempfile
7928 my ($fh, $file, $noerror, $notemp, $safe) = @_;
7929 $fh = &callers_package($fh);
7930 my $lockfile = $file;
7931 $lockfile =~ s/^[^\/]*//;
7932 if ($lockfile =~ /^\//) {
7933 $main::open_templocks{$lockfile} = &lock_file($lockfile);
7935 return &open_tempfile($fh, $file, $noerror, $notemp, $safe);
7940 $main::end_exit_status ||= $?;
7941 if ($$ == $main::initial_process_id) {
7942 # Exiting from initial process
7943 &cleanup_tempnames();
7944 if ($gconfig{'debug_what_start'} && $main::debug_log_start_time &&
7945 $main::debug_log_start_module eq &get_module_name()) {
7946 my $len = time() - $main::debug_log_start_time;
7947 &webmin_debug_log("STOP", "runtime=$len");
7948 $main::debug_log_start_time = 0;
7950 if (!$ENV{'SCRIPT_NAME'} &&
7951 $main::initial_module_name eq &get_module_name()) {
7952 # In a command-line script - call the real exit, so that the
7953 # exit status gets properly propogated. In some cases this
7954 # was not happening.
7955 exit($main::end_exit_status);
7960 =head2 month_to_number(month)
7962 Converts a month name like feb to a number like 1.
7967 return $month_to_number_map{lc(substr($_[0], 0, 3))};
7970 =head2 number_to_month(number)
7972 Converts a number like 1 to a month name like Feb.
7977 return ucfirst($number_to_month_map{$_[0]});
7980 =head2 get_rbac_module_acl(user, module)
7982 Returns a hash reference of RBAC overrides ACLs for some user and module.
7983 May return undef if none exist (indicating access denied), or the string *
7984 if full access is granted.
7987 sub get_rbac_module_acl
7989 my ($user, $mod) = @_;
7990 eval "use Authen::SolarisRBAC";
7991 return undef if ($@);
7994 if (Authen::SolarisRBAC::chkauth("webmin.$mod.admin", $user)) {
7995 # Automagic webmin.modulename.admin authorization exists .. allow access
7997 if (!Authen::SolarisRBAC::chkauth("webmin.$mod.config", $user)) {
7998 %rv = ( 'noconfig' => 1 );
8005 open(RBAC, &module_root_directory($mod)."/rbac-mapping");
8009 my ($auths, $acls) = split(/\s+/, $_);
8010 my @auths = split(/,/, $auths);
8012 my ($merge) = ($acls =~ s/^\+//);
8014 if ($auths eq "*") {
8015 # These ACLs apply to all RBAC users.
8016 # Only if there is some that match a specific authorization
8017 # later will they be used though.
8020 # Check each of the RBAC authorizations
8021 foreach my $a (@auths) {
8022 if (!Authen::SolarisRBAC::chkauth($a, $user)) {
8027 $foundany++ if ($gotall);
8030 # Found an RBAC authorization - return the ACLs
8031 return "*" if ($acls eq "*");
8032 my %acl = map { split(/=/, $_, 2) } split(/,/, $acls);
8034 # Just add to current set
8035 foreach my $a (keys %acl) {
8046 return !$foundany ? undef : %rv ? \%rv : undef;
8049 =head2 supports_rbac([module])
8051 Returns 1 if RBAC client support is available, such as on Solaris.
8056 return 0 if ($gconfig{'os_type'} ne 'solaris');
8057 eval "use Authen::SolarisRBAC";
8060 #return 0 if (!-r &module_root_directory($_[0])."/rbac-mapping");
8065 =head2 use_rbac_module_acl(user, module)
8067 Returns 1 if some user should use RBAC to get permissions for a module
8070 sub use_rbac_module_acl
8072 my $u = defined($_[0]) ? $_[0] : $base_remote_user;
8073 my $m = defined($_[1]) ? $_[1] : &get_module_name();
8074 return 1 if ($gconfig{'rbacdeny_'.$u}); # RBAC forced for user
8075 my %access = &get_module_acl($u, $m, 1);
8076 return $access{'rbac'} ? 1 : 0;
8079 =head2 execute_command(command, stdin, stdout, stderr, translate-files?, safe?)
8081 Runs some command, possibly feeding it input and capturing output to the
8082 give files or scalar references. The parameters are :
8084 =item command - Full command to run, possibly including shell meta-characters.
8086 =item stdin - File to read input from, or a scalar ref containing input, or undef if no input should be given.
8088 =item stdout - File to write output to, or a scalar ref into which output should be placed, or undef if the output is to be discarded.
8090 =item stderr - File to write error output to, or a scalar ref into which error output should be placed, or undef if the error output is to be discarded.
8092 =item translate-files - Set to 1 to apply filename translation to any filenames. Usually has no effect.
8094 =item safe - Set to 1 if this command is safe and does not modify the state of the system.
8099 my ($cmd, $stdin, $stdout, $stderr, $trans, $safe) = @_;
8100 if (&is_readonly_mode() && !$safe) {
8101 print STDERR "Vetoing command $_[0]\n";
8105 $cmd = &translate_command($cmd);
8107 # Use ` operator where possible
8108 &webmin_debug_log('CMD', "cmd=$cmd") if ($gconfig{'debug_what_cmd'});
8109 if (!$stdin && ref($stdout) && !$stderr) {
8110 $cmd = "($cmd)" if ($gconfig{'os_type'} ne 'windows');
8111 $$stdout = `$cmd 2>$null_file`;
8114 elsif (!$stdin && ref($stdout) && $stdout eq $stderr) {
8115 $cmd = "($cmd)" if ($gconfig{'os_type'} ne 'windows');
8116 $$stdout = `$cmd 2>&1`;
8119 elsif (!$stdin && !$stdout && !$stderr) {
8120 $cmd = "($cmd)" if ($gconfig{'os_type'} ne 'windows');
8121 return system("$cmd >$null_file 2>$null_file <$null_file");
8125 $| = 1; # needed on some systems to flush before forking
8126 pipe(EXECSTDINr, EXECSTDINw);
8127 pipe(EXECSTDOUTr, EXECSTDOUTw);
8128 pipe(EXECSTDERRr, EXECSTDERRw);
8130 if (!($pid = fork())) {
8134 open(STDIN, "<&EXECSTDINr");
8135 open(STDOUT, ">&EXECSTDOUTw");
8136 if (ref($stderr) && $stderr eq $stdout) {
8137 open(STDERR, ">&EXECSTDOUTw");
8140 open(STDERR, ">&EXECSTDERRw");
8147 my $fullcmd = "($cmd)";
8148 if ($stdin && !ref($stdin)) {
8149 $fullcmd .= " <$stdin";
8151 if ($stdout && !ref($stdout)) {
8152 $fullcmd .= " >$stdout";
8154 if ($stderr && !ref($stderr)) {
8155 if ($stderr eq $stdout) {
8156 $fullcmd .= " 2>&1";
8159 $fullcmd .= " 2>$stderr";
8162 if ($gconfig{'os_type'} eq 'windows') {
8166 exec("/bin/sh", "-c", $fullcmd);
8168 print "Exec failed : $!\n";
8175 # Feed input and capture output
8177 if ($stdin && ref($stdin)) {
8178 print EXECSTDINw $$stdin;
8181 if ($stdout && ref($stdout)) {
8183 while(<EXECSTDOUTr>) {
8188 if ($stderr && ref($stderr) && $stderr ne $stdout) {
8190 while(<EXECSTDERRr>) {
8201 =head2 open_readfile(handle, file)
8203 Opens some file for reading. Returns 1 on success, 0 on failure. Pretty much
8204 exactly the same as Perl's open function.
8209 my ($fh, $file) = @_;
8210 $fh = &callers_package($fh);
8211 my $realfile = &translate_filename($file);
8212 &webmin_debug_log('READ', $file) if ($gconfig{'debug_what_read'});
8213 return open($fh, "<".$realfile);
8216 =head2 open_execute_command(handle, command, output?, safe?)
8218 Runs some command, with the specified file handle set to either write to it if
8219 in-or-out is set to 0, or read to it if output is set to 1. The safe flag
8220 indicates if the command modifies the state of the system or not.
8223 sub open_execute_command
8225 my ($fh, $cmd, $mode, $safe) = @_;
8226 $fh = &callers_package($fh);
8227 my $realcmd = &translate_command($cmd);
8228 if (&is_readonly_mode() && !$safe) {
8229 # Don't actually run it
8230 print STDERR "vetoing command $cmd\n";
8233 return open($fh, ">$null_file");
8236 return open($fh, $null_file);
8240 &webmin_debug_log('CMD', "cmd=$realcmd mode=$mode")
8241 if ($gconfig{'debug_what_cmd'});
8243 return open($fh, "| $cmd");
8245 elsif ($mode == 1) {
8246 return open($fh, "$cmd 2>$null_file |");
8248 elsif ($mode == 2) {
8249 return open($fh, "$cmd 2>&1 |");
8253 =head2 translate_filename(filename)
8255 Applies all relevant registered translation functions to a filename. Mostly
8256 for internal use, and typically does nothing.
8259 sub translate_filename
8261 my ($realfile) = @_;
8262 my @funcs = grep { $_->[0] eq &get_module_name() ||
8263 !defined($_->[0]) } @main::filename_callbacks;
8264 foreach my $f (@funcs) {
8266 $realfile = &$func($realfile, @{$f->[2]});
8271 =head2 translate_command(filename)
8273 Applies all relevant registered translation functions to a command. Mostly
8274 for internal use, and typically does nothing.
8277 sub translate_command
8280 my @funcs = grep { $_->[0] eq &get_module_name() ||
8281 !defined($_->[0]) } @main::command_callbacks;
8282 foreach my $f (@funcs) {
8284 $realcmd = &$func($realcmd, @{$f->[2]});
8289 =head2 register_filename_callback(module|undef, &function, &args)
8291 Registers some function to be called when the specified module (or all
8292 modules) tries to open a file for reading and writing. The function must
8293 return the actual file to open. This allows you to override which files
8294 other code actually operates on, via the translate_filename function.
8297 sub register_filename_callback
8299 my ($mod, $func, $args) = @_;
8300 push(@main::filename_callbacks, [ $mod, $func, $args ]);
8303 =head2 register_command_callback(module|undef, &function, &args)
8305 Registers some function to be called when the specified module (or all
8306 modules) tries to execute a command. The function must return the actual
8307 command to run. This allows you to override which commands other other code
8308 actually runs, via the translate_command function.
8311 sub register_command_callback
8313 my ($mod, $func, $args) = @_;
8314 push(@main::command_callbacks, [ $mod, $func, $args ]);
8317 =head2 capture_function_output(&function, arg, ...)
8319 Captures output that some function prints to STDOUT, and returns it. Useful
8320 for functions outside your control that print data when you really want to
8321 manipulate it before output.
8324 sub capture_function_output
8326 my ($func, @args) = @_;
8327 socketpair(SOCKET2, SOCKET1, AF_UNIX, SOCK_STREAM, PF_UNSPEC);
8328 my $old = select(SOCKET1);
8329 my @rv = &$func(@args);
8338 return wantarray ? ($out, \@rv) : $out;
8341 =head2 capture_function_output_tempfile(&function, arg, ...)
8343 Behaves the same as capture_function_output, but uses a temporary file
8344 to avoid buffer full problems.
8347 sub capture_function_output_tempfile
8349 my ($func, @args) = @_;
8350 my $temp = &transname();
8351 open(BUFFER, ">$temp");
8352 my $old = select(BUFFER);
8353 my @rv = &$func(@args);
8356 my $out = &read_file_contents($temp);
8357 &unlink_file($temp);
8358 return wantarray ? ($out, \@rv) : $out;
8361 =head2 modules_chooser_button(field, multiple, [form])
8363 Returns HTML for a button for selecting one or many Webmin modules.
8364 field - Name of the HTML field to place the module names into.
8365 multiple - Set to 1 if multiple modules can be selected.
8366 form - Index of the form on the page.
8369 sub modules_chooser_button
8371 return &theme_modules_chooser_button(@_)
8372 if (defined(&theme_modules_chooser_button));
8373 my $form = defined($_[2]) ? $_[2] : 0;
8374 my $w = $_[1] ? 700 : 500;
8376 if ($_[1] && $gconfig{'db_sizemodules'}) {
8377 ($w, $h) = split(/x/, $gconfig{'db_sizemodules'});
8379 elsif (!$_[1] && $gconfig{'db_sizemodule'}) {
8380 ($w, $h) = split(/x/, $gconfig{'db_sizemodule'});
8382 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";
8385 =head2 substitute_template(text, &hash)
8387 Given some text and a hash reference, for each ocurrance of $FOO or ${FOO} in
8388 the text replaces it with the value of the hash key foo. Also supports blocks
8389 like ${IF-FOO} ... ${ENDIF-FOO}, whose contents are only included if foo is
8390 non-zero, and ${IF-FOO} ... ${ELSE-FOO} ... ${ENDIF-FOO}.
8393 sub substitute_template
8395 # Add some extra fixed parameters to the hash
8396 my %hash = %{$_[1]};
8397 $hash{'hostname'} = &get_system_hostname();
8398 $hash{'webmin_config'} = $config_directory;
8399 $hash{'webmin_etc'} = $config_directory;
8400 $hash{'module_config'} = &get_module_variable('$module_config_directory');
8401 $hash{'webmin_var'} = $var_directory;
8403 # Add time-based parameters, for use in DNS
8404 $hash{'current_time'} = time();
8405 my @tm = localtime($hash{'current_time'});
8406 $hash{'current_year'} = $tm[5]+1900;
8407 $hash{'current_month'} = sprintf("%2.2d", $tm[4]+1);
8408 $hash{'current_day'} = sprintf("%2.2d", $tm[3]);
8409 $hash{'current_hour'} = sprintf("%2.2d", $tm[2]);
8410 $hash{'current_minute'} = sprintf("%2.2d", $tm[1]);
8411 $hash{'current_second'} = sprintf("%2.2d", $tm[0]);
8413 # Actually do the substition
8415 foreach my $s (keys %hash) {
8416 next if ($s eq ''); # Prevent just $ from being subbed
8419 $rv =~ s/\$\{\Q$us\E\}/$sv/g;
8420 $rv =~ s/\$\Q$us\E/$sv/g;
8422 # Replace ${IF}..${ELSE}..${ENDIF} block with first value,
8423 # and ${IF}..${ENDIF} with value
8424 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ELSE-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)/$2/g;
8425 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)/$2/g;
8427 # Replace $IF..$ELSE..$ENDIF block with first value,
8428 # and $IF..$ENDIF with value
8429 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ELSE-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)/$2/g;
8430 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)/$2/g;
8432 # Replace ${IFEQ}..${ENDIFEQ} block with first value if
8433 # matching, nothing if not
8434 $rv =~ s/\$\{IFEQ-\Q$us\E-\Q$sv\E\}(\n?)([\000-\377]*?)\$\{ENDIFEQ-\Q$us\E-\Q$sv\E\}(\n?)/$2/g;
8435 $rv =~ s/\$\{IFEQ-\Q$us\E-[^\}]+}(\n?)([\000-\377]*?)\$\{ENDIFEQ-\Q$us\E-[^\}]+\}(\n?)//g;
8437 # Replace $IFEQ..$ENDIFEQ block with first value if
8438 # matching, nothing if not
8439 $rv =~ s/\$IFEQ-\Q$us\E-\Q$sv\E(\n?)([\000-\377]*?)\$ENDIFEQ-\Q$us\E-\Q$sv\E(\n?)/$2/g;
8440 $rv =~ s/\$IFEQ-\Q$us\E-\S+(\n?)([\000-\377]*?)\$ENDIFEQ-\Q$us\E-\S+(\n?)//g;
8443 # Replace ${IF}..${ELSE}..${ENDIF} block with second value,
8444 # and ${IF}..${ENDIF} with nothing
8445 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ELSE-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)/$4/g;
8446 $rv =~ s/\$\{IF-\Q$us\E\}(\n?)([\000-\377]*?)\$\{ENDIF-\Q$us\E\}(\n?)//g;
8448 # Replace $IF..$ELSE..$ENDIF block with second value,
8449 # and $IF..$ENDIF with nothing
8450 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ELSE-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)/$4/g;
8451 $rv =~ s/\$IF-\Q$us\E(\n?)([\000-\377]*?)\$ENDIF-\Q$us\E(\n?)//g;
8453 # Replace ${IFEQ}..${ENDIFEQ} block with nothing
8454 $rv =~ s/\$\{IFEQ-\Q$us\E-[^\}]+}(\n?)([\000-\377]*?)\$\{ENDIFEQ-\Q$us\E-[^\}]+\}(\n?)//g;
8455 $rv =~ s/\$IFEQ-\Q$us\E-\S+(\n?)([\000-\377]*?)\$ENDIFEQ-\Q$us\E-\S+(\n?)//g;
8459 # Now assume any $IF blocks whose variables are not present in the hash
8460 # evaluate to false.
8461 # $IF...$ELSE x $ENDIF => x
8462 $rv =~ s/\$\{IF\-([A-Z]+)\}.*?\$\{ELSE\-\1\}(.*?)\$\{ENDIF\-\1\}/$2/gs;
8463 # $IF...x...$ENDIF => (nothing)
8464 $rv =~ s/\$\{IF\-([A-Z]+)\}.*?\$\{ENDIF\-\1\}//gs;
8465 # ${var} => (nothing)
8466 $rv =~ s/\$\{[A-Z]+\}//g;
8471 =head2 running_in_zone
8473 Returns 1 if the current Webmin instance is running in a Solaris zone. Used to
8474 disable module and features that are not appropriate, like those that modify
8475 mounted filesystems.
8480 return 0 if ($gconfig{'os_type'} ne 'solaris' ||
8481 $gconfig{'os_version'} < 10);
8482 my $zn = `zonename 2>$null_file`;
8484 return $zn && $zn ne "global";
8487 =head2 running_in_vserver
8489 Returns 1 if the current Webmin instance is running in a Linux VServer.
8490 Used to disable modules and features that are not appropriate.
8493 sub running_in_vserver
8495 return 0 if ($gconfig{'os_type'} !~ /^\*-linux$/);
8498 open(MTAB, "/etc/mtab");
8500 my ($dev, $mp) = split(/\s+/, $_);
8501 if ($mp eq "/" && $dev =~ /^\/dev\/hdv/) {
8510 =head2 running_in_xen
8512 Returns 1 if Webmin is running inside a Xen instance, by looking
8513 at /proc/xen/capabilities.
8518 return 0 if (!-r "/proc/xen/capabilities");
8519 my $cap = &read_file_contents("/proc/xen/capabilities");
8520 return $cap =~ /control_d/ ? 0 : 1;
8523 =head2 running_in_openvz
8525 Returns 1 if Webmin is running inside an OpenVZ container, by looking
8526 at /proc/vz/veinfo for a non-zero line.
8529 sub running_in_openvz
8531 return 0 if (!-r "/proc/vz/veinfo");
8532 my $lref = &read_file_lines("/proc/vz/veinfo", 1);
8533 return 0 if (!$lref || !@$lref);
8534 foreach my $l (@$lref) {
8536 my @ll = split(/\s+/, $l);
8537 return 0 if ($ll[0] eq '0');
8542 =head2 list_categories(&modules, [include-empty])
8544 Returns a hash mapping category codes to names, including any custom-defined
8545 categories. The modules parameter must be an array ref of module hash objects,
8546 as returned by get_all_module_infos.
8551 my ($mods, $empty) = @_;
8552 my (%cats, %catnames);
8553 &read_file("$config_directory/webmin.catnames", \%catnames);
8554 foreach my $o (@lang_order_list) {
8555 &read_file("$config_directory/webmin.catnames.$o", \%catnames);
8560 foreach my $m (@$mods) {
8561 my $c = $m->{'category'};
8562 next if ($cats{$c});
8563 if (defined($catnames{$c})) {
8564 $cats{$c} = $catnames{$c};
8566 elsif ($text{"category_$c"}) {
8567 $cats{$c} = $text{"category_$c"};
8570 # try to get category name from module ..
8571 my %mtext = &load_language($m->{'dir'});
8572 if ($mtext{"category_$c"}) {
8573 $cats{$c} = $mtext{"category_$c"};
8576 $c = $m->{'category'} = "";
8577 $cats{$c} = $text{"category_$c"};
8584 =head2 is_readonly_mode
8586 Returns 1 if the current user is in read-only mode, and thus all writes
8587 to files and command execution should fail.
8590 sub is_readonly_mode
8592 if (!defined($main::readonly_mode_cache)) {
8593 my %gaccess = &get_module_acl(undef, "");
8594 $main::readonly_mode_cache = $gaccess{'readonly'} ? 1 : 0;
8596 return $main::readonly_mode_cache;
8599 =head2 command_as_user(user, with-env?, command, ...)
8601 Returns a command to execute some command as the given user, using the
8602 su statement. If on Linux, the /bin/sh shell is forced in case the user
8603 does not have a valid shell. If with-env is set to 1, the -s flag is added
8604 to the su command to read the user's .profile or .bashrc file.
8609 my ($user, $env, @args) = @_;
8610 my @uinfo = getpwnam($user);
8611 if ($uinfo[8] ne "/bin/sh" && $uinfo[8] !~ /\/bash$/) {
8612 # User shell doesn't appear to be valid
8613 if ($gconfig{'os_type'} =~ /-linux$/) {
8614 # Use -s /bin/sh to force it
8615 $shellarg = " -s /bin/sh";
8617 elsif ($gconfig{'os_type'} eq 'freebsd' ||
8618 $gconfig{'os_type'} eq 'solaris' &&
8619 $gconfig{'os_version'} >= 11 ||
8620 $gconfig{'os_type'} eq 'macos') {
8621 # Use -m and force /bin/sh
8622 @args = ( "/bin/sh", "-c", quotemeta(join(" ", @args)) );
8626 my $rv = "su".($env ? " -" : "").$shellarg.
8627 " ".quotemeta($user)." -c ".quotemeta(join(" ", @args));
8631 =head2 list_osdn_mirrors(project, file)
8633 This function is now deprecated in favor of letting sourceforge just
8634 redirect to the best mirror, and now just returns their primary download URL.
8637 sub list_osdn_mirrors
8639 my ($project, $file) = @_;
8640 return ( { 'url' => "http://downloads.sourceforge.net/$project/$file",
8642 'mirror' => 'downloads' } );
8645 =head2 convert_osdn_url(url)
8647 Given a URL like http://osdn.dl.sourceforge.net/sourceforge/project/file.zip
8648 or http://prdownloads.sourceforge.net/project/file.zip , convert it
8649 to a real URL on the sourceforge download redirector.
8652 sub convert_osdn_url
8655 if ($url =~ /^http:\/\/[^\.]+.dl.sourceforge.net\/sourceforge\/([^\/]+)\/(.*)$/ ||
8656 $url =~ /^http:\/\/prdownloads.sourceforge.net\/([^\/]+)\/(.*)$/) {
8657 # Always use the Sourceforge mail download URL, which does
8658 # a location-based redirect for us
8659 my ($project, $file) = ($1, $2);
8660 $url = "http://prdownloads.sourceforge.net/sourceforge/".
8662 return wantarray ? ( $url, 0 ) : $url;
8665 # Some other source .. don't change
8666 return wantarray ? ( $url, 2 ) : $url;
8670 =head2 get_current_dir
8672 Returns the directory the current process is running in.
8678 if ($gconfig{'os_type'} eq 'windows') {
8691 =head2 supports_users
8693 Returns 1 if the current OS supports Unix user concepts and functions like
8694 su , getpw* and so on. This will be true on Linux and other Unixes, but false
8700 return $gconfig{'os_type'} ne 'windows';
8703 =head2 supports_symlinks
8705 Returns 1 if the current OS supports symbolic and hard links. This will not
8706 be the case on Windows.
8709 sub supports_symlinks
8711 return $gconfig{'os_type'} ne 'windows';
8714 =head2 quote_path(path)
8716 Returns a path with safe quoting for the current operating system.
8722 if ($gconfig{'os_type'} eq 'windows' || $path =~ /^[a-z]:/i) {
8723 # Windows only supports "" style quoting
8727 return quotemeta($path);
8731 =head2 get_windows_root
8733 Returns the base windows system directory, like c:/windows.
8736 sub get_windows_root
8738 if ($ENV{'SystemRoot'}) {
8739 my $rv = $ENV{'SystemRoot'};
8744 return -d "c:/windows" ? "c:/windows" : "c:/winnt";
8748 =head2 read_file_contents(file)
8750 Given a filename, returns its complete contents as a string. Effectively
8751 the same as the Perl construct `cat file`.
8754 sub read_file_contents
8756 &open_readfile(FILE, $_[0]) || return undef;
8763 =head2 unix_crypt(password, salt)
8765 Performs Unix encryption on a password, using the built-in crypt function or
8766 the Crypt::UnixCrypt module if the former does not work. The salt parameter
8767 must be either an already-hashed password, or a two-character alpha-numeric
8773 my ($pass, $salt) = @_;
8774 return "" if ($salt !~ /^[a-zA-Z0-9\.\/]{2}/); # same as real crypt
8775 my $rv = eval "crypt(\$pass, \$salt)";
8777 return $rv if ($rv && !$@);
8778 eval "use Crypt::UnixCrypt";
8780 return Crypt::UnixCrypt::crypt($pass, $salt);
8783 &error("Failed to encrypt password : $err");
8787 =head2 split_quoted_string(string)
8789 Given a string like I<foo "bar baz" quux>, returns the array :
8793 sub split_quoted_string
8797 while($str =~ /^"([^"]*)"\s*([\000-\377]*)$/ ||
8798 $str =~ /^'([^']*)'\s*([\000-\377]*)$/ ||
8799 $str =~ /^(\S+)\s*([\000-\377]*)$/) {
8806 =head2 write_to_http_cache(url, file|&data)
8808 Updates the Webmin cache with the contents of the given file, possibly also
8809 clearing out old data. Mainly for internal use by http_download.
8812 sub write_to_http_cache
8814 my ($url, $file) = @_;
8815 return 0 if (!$gconfig{'cache_size'});
8817 # Don't cache downloads that look dynamic
8818 if ($url =~ /cgi-bin/ || $url =~ /\?/) {
8822 # Check if the current module should do caching
8823 if ($gconfig{'cache_mods'} =~ /^\!(.*)$/) {
8824 # Caching all except some modules
8825 my @mods = split(/\s+/, $1);
8826 return 0 if (&indexof(&get_module_name(), @mods) != -1);
8828 elsif ($gconfig{'cache_mods'}) {
8829 # Only caching some modules
8830 my @mods = split(/\s+/, $gconfig{'cache_mods'});
8831 return 0 if (&indexof(&get_module_name(), @mods) == -1);
8837 $size = length($$file);
8840 my @st = stat($file);
8844 if ($size > $gconfig{'cache_size'}) {
8845 # Bigger than the whole cache - so don't save it
8850 $cfile = "$main::http_cache_directory/$cfile";
8852 # See how much we have cached currently, clearing old files
8854 mkdir($main::http_cache_directory, 0700) if (!-d $main::http_cache_directory);
8855 opendir(CACHEDIR, $main::http_cache_directory);
8856 foreach my $f (readdir(CACHEDIR)) {
8857 next if ($f eq "." || $f eq "..");
8858 my $path = "$main::http_cache_directory/$f";
8859 my @st = stat($path);
8860 if ($gconfig{'cache_days'} &&
8861 time()-$st[9] > $gconfig{'cache_days'}*24*60*60) {
8862 # This file is too old .. trash it
8867 push(@cached, [ $path, $st[7], $st[9] ]);
8871 @cached = sort { $a->[2] <=> $b->[2] } @cached;
8872 while($total+$size > $gconfig{'cache_size'} && @cached) {
8873 # Cache is too big .. delete some files until the new one will fit
8874 unlink($cached[0]->[0]);
8875 $total -= $cached[0]->[1];
8879 # Finally, write out the new file
8881 &open_tempfile(CACHEFILE, ">$cfile");
8882 &print_tempfile(CACHEFILE, $$file);
8883 &close_tempfile(CACHEFILE);
8886 my ($ok, $err) = ©_source_dest($file, $cfile);
8892 =head2 check_in_http_cache(url)
8894 If some URL is in the cache and valid, return the filename for it. Mainly
8895 for internal use by http_download.
8898 sub check_in_http_cache
8901 return undef if (!$gconfig{'cache_size'});
8903 # Check if the current module should do caching
8904 if ($gconfig{'cache_mods'} =~ /^\!(.*)$/) {
8905 # Caching all except some modules
8906 my @mods = split(/\s+/, $1);
8907 return 0 if (&indexof(&get_module_name(), @mods) != -1);
8909 elsif ($gconfig{'cache_mods'}) {
8910 # Only caching some modules
8911 my @mods = split(/\s+/, $gconfig{'cache_mods'});
8912 return 0 if (&indexof(&get_module_name(), @mods) == -1);
8917 $cfile = "$main::http_cache_directory/$cfile";
8918 my @st = stat($cfile);
8919 return undef if (!@st || !$st[7]);
8920 if ($gconfig{'cache_days'} && time()-$st[9] > $gconfig{'cache_days'}*24*60*60) {
8925 open(TOUCH, ">>$cfile"); # Update the file time, to keep it in the cache
8930 =head2 supports_javascript
8932 Returns 1 if the current browser is assumed to support javascript.
8935 sub supports_javascript
8937 if (defined(&theme_supports_javascript)) {
8938 return &theme_supports_javascript();
8940 return $ENV{'MOBILE_DEVICE'} ? 0 : 1;
8943 =head2 get_module_name
8945 Returns the name of the Webmin module that called this function. For internal
8946 use only by other API functions.
8951 return &get_module_variable('$module_name');
8954 =head2 get_module_variable(name, [ref])
8956 Returns the value of some variable which is set in the caller's context, if
8957 using the new WebminCore package. For internal use only.
8960 sub get_module_variable
8962 my ($v, $wantref) = @_;
8963 my $slash = $wantref ? "\\" : "";
8964 my $thispkg = &web_libs_package();
8965 if ($thispkg eq 'WebminCore') {
8966 my ($vt, $vn) = split('', $v, 2);
8968 for(my $i=0; ($callpkg) = caller($i); $i++) {
8969 last if ($callpkg ne $thispkg);
8971 return eval "${slash}${vt}${callpkg}::${vn}";
8973 return eval "${slash}${v}";
8976 =head2 clear_time_locale()
8978 Temporarily force the locale to C, until reset_time_locale is called. This is
8979 useful if your code is going to call C<strftime> from the POSIX package, and
8980 you want to ensure that the output is in a consistent format.
8983 sub clear_time_locale
8985 if ($main::clear_time_locale_count == 0) {
8988 $main::clear_time_locale_old = POSIX::setlocale(POSIX::LC_TIME);
8989 POSIX::setlocale(POSIX::LC_TIME, "C");
8992 $main::clear_time_locale_count++;
8995 =head2 reset_time_locale()
8997 Revert the locale to whatever it was before clear_time_locale was called
9000 sub reset_time_locale
9002 if ($main::clear_time_locale_count == 1) {
9004 POSIX::setlocale(POSIX::LC_TIME, $main::clear_time_locale_old);
9005 $main::clear_time_locale_old = undef;
9008 $main::clear_time_locale_count--;
9011 =head2 callers_package(filehandle)
9013 Convert a non-module filehandle like FOO to one qualified with the
9014 caller's caller's package, like fsdump::FOO. For internal use only.
9020 my $callpkg = (caller(1))[0];
9021 my $thispkg = &web_libs_package();
9022 if (!ref($fh) && $fh !~ /::/ &&
9023 $callpkg ne $thispkg && $thispkg eq 'WebminCore') {
9024 $fh = $callpkg."::".$fh;
9029 =head2 web_libs_package()
9031 Returns the package this code is in. We can't always trust __PACKAGE__. For
9035 sub web_libs_package
9037 if ($called_from_webmin_core) {
9038 return "WebminCore";
9043 =head2 get_userdb_string
9045 Returns the URL-style string for connecting to the users and groups database
9048 sub get_userdb_string
9050 return undef if ($main::no_miniserv_userdb);
9052 &get_miniserv_config(\%miniserv);
9053 return $miniserv{'userdb'};
9056 =head2 connect_userdb(string)
9058 Returns a handle for talking to a user database - may be a DBI or LDAP handle.
9059 On failure returns an error message string. In an array context, returns the
9066 my ($proto, $user, $pass, $host, $prefix, $args) = &split_userdb_string($str);
9067 if ($proto eq "mysql") {
9068 # Connect to MySQL with DBI
9069 my $drh = eval "use DBI; DBI->install_driver('mysql');";
9070 $drh || return $text{'sql_emysqldriver'};
9071 my ($host, $port) = split(/:/, $host);
9072 my $cstr = "database=$prefix;host=$host";
9073 $cstr .= ";port=$port" if ($port);
9074 my $dbh = $drh->connect($cstr, $user, $pass, { });
9075 $dbh || return &text('sql_emysqlconnect', $drh->errstr);
9076 $dbh->{'AutoCommit'} = 1;
9077 return wantarray ? ($dbh, $proto, $prefix, $args) : $dbh;
9079 elsif ($proto eq "postgresql") {
9080 # Connect to PostgreSQL with DBI
9081 my $drh = eval "use DBI; DBI->install_driver('Pg');";
9082 $drh || return $text{'sql_epostgresqldriver'};
9083 my ($host, $port) = split(/:/, $host);
9084 my $cstr = "dbname=$prefix;host=$host";
9085 $cstr .= ";port=$port" if ($port);
9086 my $dbh = $drh->connect($cstr, $user, $pass);
9087 $dbh || return &text('sql_epostgresqlconnect', $drh->errstr);
9088 $dbh->{'AutoCommit'} = 1;
9089 return wantarray ? ($dbh, $proto, $prefix, $args) : $dbh;
9091 elsif ($proto eq "ldap") {
9092 # Connect with perl LDAP module
9093 eval "use Net::LDAP";
9094 $@ && return $text{'sql_eldapdriver'};
9095 my ($host, $port) = split(/:/, $host);
9096 my $scheme = $args->{'scheme'} || 'ldap';
9098 $port = $scheme eq 'ldaps' ? 636 : 389;
9100 my $ldap = Net::LDAP->new($host,
9102 'scheme' => $scheme);
9103 $ldap || return &text('sql_eldapconnect', $host);
9105 if ($args->{'tls'}) {
9106 # Switch to TLS mode
9107 eval { $mesg = $ldap->start_tls(); };
9108 if ($@ || !$mesg || $mesg->code) {
9109 return &text('sql_eldaptls',
9110 $@ ? $@ : $mesg ? $mesg->error : "Unknown error");
9113 # Login to the server
9115 $mesg = $ldap->bind(dn => $user, password => $pass);
9118 $mesg = $ldap->bind(dn => $user, anonymous => 1);
9120 if (!$mesg || $mesg->code) {
9121 return &text('sql_eldaplogin', $user,
9122 $mesg ? $mesg->error : "Unknown error");
9124 return wantarray ? ($ldap, $proto, $prefix, $args) : $ldap;
9127 return "Unknown protocol $proto";
9131 =head2 disconnect_userdb(string, &handle)
9133 Closes a handle opened by connect_userdb
9136 sub disconnect_userdb
9139 if ($str =~ /^(mysql|postgresql):/) {
9144 elsif ($str =~ /^ldap:/) {
9151 =head2 split_userdb_string(string)
9153 Converts a string like mysql://user:pass@host/db into separate parts
9156 sub split_userdb_string
9159 if ($str =~ /^([a-z]+):\/\/([^:]*):([^\@]*)\@([a-z0-9\.\-\_]+)\/([^\?]+)(\?(.*))?$/) {
9160 my ($proto, $user, $pass, $host, $prefix, $argstr) =
9161 ($1, $2, $3, $4, $5, $7);
9162 my %args = map { split(/=/, $_, 2) } split(/\&/, $argstr);
9163 return ($proto, $user, $pass, $host, $prefix, \%args);
9168 $done_web_lib_funcs = 1;