2 # A very simple perl web server used by Webmin
4 # Require basic libraries
9 eval "use Time::HiRes;";
11 @itoa64 = split(//, "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz");
13 # Find and read config file
15 die "Usage: miniserv.pl <config file>";
17 if ($ARGV[0] =~ /^([a-z]:)?\//i) {
18 $config_file = $ARGV[0];
22 $config_file = "$pwd/$ARGV[0]";
24 %config = &read_config_file($config_file);
25 if ($config{'perllib'}) {
26 push(@INC, split(/:/, $config{'perllib'}));
27 $ENV{'PERLLIB'} .= ':'.$config{'perllib'};
31 # Check if SSL is enabled and available
33 eval "use Net::SSLeay";
36 # These functions only exist for SSLeay 1.0
37 eval "Net::SSLeay::SSLeay_add_ssl_algorithms()";
38 eval "Net::SSLeay::load_error_strings()";
39 if ($config{'no_ssl2'}) {
40 eval "Net::SSLeay::CTX_set_options($ctx,&Net::SSLeay::OP_NO_SSLv2)";
42 if (defined(&Net::SSLeay::X509_STORE_CTX_get_current_cert) &&
43 defined(&Net::SSLeay::CTX_load_verify_locations) &&
44 defined(&Net::SSLeay::CTX_set_verify)) {
50 # Check if IPv6 is enabled and available
51 if ($config{'ipv6'}) {
54 push(@startup_msg, "IPv6 support enabled");
58 push(@startup_msg, "IPv6 support cannot be enabled without ".
59 "the Socket6 perl module");
63 # Check if the syslog module is available to log hacking attempts
64 if ($config{'syslog'} && !$config{'inetd'}) {
65 eval "use Sys::Syslog qw(:DEFAULT setlogsock)";
71 # check if the TCP-wrappers module is available
72 if ($config{'libwrap'}) {
73 eval "use Authen::Libwrap qw(hosts_ctl STRING_UNKNOWN)";
79 # Check if the MD5 perl module is available
85 eval "use Digest::MD5";
87 $use_md5 = "Digest::MD5";
91 # Get miniserv's perl path and location
93 open(SOURCE, $miniserv_path);
94 <SOURCE> =~ /^#!(\S+)/;
101 $linked_perl_path = readlink($perl_path);
103 @miniserv_argv = @ARGV;
105 # Check vital config options
106 &update_vital_config();
108 $sidname = $config{'sidname'};
109 die "Session authentication cannot be used in inetd mode"
110 if ($config{'inetd'} && $config{'session'});
112 # check if the PAM module is available to authenticate
113 if ($config{'assume_pam'}) {
114 # Just assume that it will work. This can also be used to work around
115 # a Solaris bug in which using PAM before forking caused it to fail
119 elsif (!$config{'no_pam'}) {
120 eval "use Authen::PAM;";
122 # check if the PAM authentication can be used by opening a
125 if (ref($pamh = new Authen::PAM($config{'pam'},
126 $config{'pam_test_user'},
128 # Now test a login to see if /etc/pam.d/webmin is set
130 $pam_conv_func_called = 0;
131 $pam_username = "test";
132 $pam_password = "test";
133 $pamh->pam_authenticate();
134 if ($pam_conv_func_called) {
136 "PAM authentication enabled");
141 "PAM test failed - maybe ".
142 "/etc/pam.d/$config{'pam'} does not exist");
147 "PAM initialization of Authen::PAM failed");
152 "Perl module Authen::PAM needed for PAM is ".
153 "not installed : $@");
156 if ($config{'pam_only'} && !$use_pam) {
157 print STDERR $startup_msg[0],"\n";
158 print STDERR "PAM use is mandatory, but could not be enabled!\n";
161 elsif ($pam_msg && !$use_pam) {
163 "Continuing without the Authen::PAM perl module");
166 # Check if the User::Utmp perl module is installed
167 if ($config{'utmp'}) {
168 eval "use User::Utmp;";
171 push(@startup_msg, "UTMP logging enabled");
175 "Perl module User::Utmp needed for Utmp logging is ".
176 "not installed : $@");
180 # See if the crypt function fails
181 eval "crypt('foo', 'xx')";
183 eval "use Crypt::UnixCrypt";
187 "Using Crypt::UnixCrypt for password encryption");
191 "crypt() function un-implemented, and Crypt::UnixCrypt ".
192 "not installed - password authentication will fail");
196 # Check if /dev/urandom really generates random IDs, by calling it twice
197 local $rand1 = &generate_random_id("foo", 1);
198 local $rand2 = &generate_random_id("foo", 2);
199 if ($rand1 eq $rand2) {
202 "Random number generator file /dev/urandom is not reliable");
205 # Check if we can call sudo
206 if ($config{'sudo'} && &has_command("sudo")) {
213 "Perl module IO::Pty needed for calling sudo is not ".
218 # init days and months for http_date
219 @weekday = ( "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" );
220 @month = ( "Jan", "Feb", "Mar", "Apr", "May", "Jun",
221 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" );
223 # Change dir to the server root
224 @roots = ( $config{'root'} );
225 for($i=0; defined($config{"extraroot_$i"}); $i++) {
226 push(@roots, $config{"extraroot_$i"});
229 eval { $user_homedir = (getpwuid($<))[7]; };
231 # getpwuid doesn't work on windows
232 $user_homedir = $ENV{"HOME"} || $ENV{"USERPROFILE"} || "/";
239 # Setup SSL if possible and if requested
240 if (!-r $config{'keyfile'}) {
241 # Key file doesn't exist!
242 if ($config{'keyfile'}) {
243 print STDERR "SSL key file $config{'keyfile'} does not exist\n";
247 elsif ($config{'certfile'} && !-r $config{'certfile'}) {
248 # Cert file doesn't exist!
249 print STDERR "SSL cert file $config{'certfile'} does not exist\n";
252 @ipkeys = &get_ipkeys(\%config);
254 if ($config{'ssl_version'}) {
255 # Force an SSL version
256 $Net::SSLeay::version = $config{'ssl_version'};
257 $Net::SSLeay::ssl_version = $config{'ssl_version'};
259 $client_certs = 0 if (!-r $config{'ca'} || !%certs);
260 $ssl_contexts{"*"} = &create_ssl_context($config{'keyfile'},
261 $config{'certfile'});
262 foreach $ipkey (@ipkeys) {
263 $ctx = &create_ssl_context($ipkey->{'key'}, $ipkey->{'cert'});
264 foreach $ip (@{$ipkey->{'ips'}}) {
265 $ssl_contexts{$ip} = $ctx;
270 # Load gzip library if enabled
271 if ($config{'gzip'} eq '1') {
272 eval "use Compress::Zlib";
278 # Setup syslog support if possible and if requested
280 open(ERRDUP, ">&STDERR");
281 open(STDERR, ">/dev/null");
282 $log_socket = $config{"logsock"} || "unix";
283 eval 'openlog($config{"pam"}, "cons,pid,ndelay", "authpriv"); setlogsock($log_socket)';
288 local $msg = ucfirst($config{'pam'})." starting";
289 eval { syslog("info", "%s", $msg); };
293 syslog("info", "%s", $msg);
296 # All attempts to use syslog have failed..
301 open(STDERR, ">&ERRDUP");
305 # Read MIME types file and add extra types
309 if ($config{'log'}) {
310 local(@gmt, @lct, $days, $hours, $mins);
311 @gmt = gmtime(time());
312 @lct = localtime(time());
313 $days = $lct[3] - $gmt[3];
314 $hours = ($days < -1 ? 24 : 1 < $days ? -24 : $days * 24) +
316 $mins = $hours * 60 + $lct[1] - $gmt[1];
317 $timezone = ($mins < 0 ? "-" : "+"); $mins = abs($mins);
318 $timezone .= sprintf "%2.2d%2.2d", $mins/60, $mins%60;
321 # Build various maps from the config files
322 &build_config_mappings();
324 # start up external authentication program, if needed
325 if ($config{'extauth'}) {
326 socketpair(EXTAUTH, EXTAUTH2, AF_UNIX, SOCK_STREAM, PF_UNSPEC);
327 if (!($extauth = fork())) {
331 open(STDIN, "<&EXTAUTH2");
332 open(STDOUT, ">&EXTAUTH2");
333 exec($config{'extauth'}) or die "exec failed : $!\n";
336 local $os = select(EXTAUTH);
340 # Pre-load any libraries
341 if (!$config{'inetd'}) {
342 foreach $pl (split(/\s+/, $config{'preload'})) {
343 ($pkg, $lib) = split(/=/, $pl);
344 $pkg =~ s/[^A-Za-z0-9]/_/g;
345 eval "package $pkg; do '$config{'root'}/$lib'";
347 print STDERR "Failed to pre-load $lib in $pkg : $@\n";
350 print STDERR "Pre-loaded $lib in $pkg\n";
353 foreach $pl (split(/\s+/, $config{'premodules'})) {
355 ($dir, $mod) = split(/\//, $pl);
358 ($dir, $mod) = (undef, $pl);
360 push(@INC, "$config{'root'}/$dir");
361 eval "package $mod; use $mod ()";
363 print STDERR "Failed to pre-load $mod : $@\n";
366 print STDERR "Pre-loaded $mod\n";
371 # Open debug log if set
372 if ($config{'debuglog'}) {
373 open(DEBUG, ">>$config{'debuglog'}");
374 chmod(0700, $config{'debuglog'});
375 select(DEBUG); $| = 1; select(STDOUT);
376 print DEBUG "miniserv.pl starting ..\n";
379 # Write out (empty) blocked hosts file
380 &write_blocked_file();
382 # Initially read webmin cron functions and last execution times
383 &read_webmin_crons();
384 %webmincron_last = ( );
385 &read_file($config{'webmincron_last'}, \%webmincron_last);
387 # Pre-cache lang files
390 if ($config{'inetd'}) {
391 # We are being run from inetd - go direct to handling the request
392 &redirect_stderr_to_log();
393 $SIG{'HUP'} = 'IGNORE';
394 $SIG{'TERM'} = 'DEFAULT';
395 $SIG{'PIPE'} = 'DEFAULT';
396 open(SOCK, "+>&STDIN");
398 # Check if it is time for the logfile to be cleared
399 if ($config{'logclear'}) {
400 local $write_logtime = 0;
401 local @st = stat("$config{'logfile'}.time");
403 if ($st[9]+$config{'logtime'}*60*60 < time()){
406 unlink($config{'logfile'});
409 else { $write_logtime = 1; }
410 if ($write_logtime) {
411 open(LOGTIME, ">$config{'logfile'}.time");
412 print LOGTIME time(),"\n";
417 # Work out if IPv6 is being used locally
418 local $sn = getsockname(SOCK);
419 print DEBUG "sn=$sn\n";
420 print DEBUG "length=",length($sn),"\n";
421 $localipv6 = length($sn) > 16;
422 print DEBUG "localipv6=$localipv6\n";
424 # Initialize SSL for this connection
426 $ssl_con = &ssl_connection_for_ip(SOCK, $localipv6);
430 # Work out the hostname for this web server
431 $host = &get_socket_name(SOCK, $localipv6);
432 print DEBUG "host=$host\n";
434 $port = $config{'port'};
435 $acptaddr = getpeername(SOCK);
436 print DEBUG "acptaddr=$acptaddr\n";
437 print DEBUG "length=",length($acptaddr),"\n";
440 # Work out remote and local IPs
441 $ipv6 = length($acptaddr) > 16;
442 print DEBUG "ipv6=$ipv6\n";
443 (undef, $locala) = &get_socket_ip(SOCK, $localipv6);
444 print DEBUG "locala=$locala\n";
445 (undef, $peera, undef) = &get_address_ip($acptaddr, $ipv6);
446 print DEBUG "peera=$peera\n";
448 print DEBUG "main: Starting handle_request loop pid=$$\n";
449 while(&handle_request($peera, $locala, $ipv6)) { }
450 print DEBUG "main: Done handle_request loop pid=$$\n";
455 # Build list of sockets to listen on
456 $config{'bind'} = '' if ($config{'bind'} eq '*');
457 if ($config{'bind'}) {
458 # Listening on a specific IP
459 if (&check_ip6address($config{'bind'})) {
461 $use_ipv6 || die "Cannot bind to $config{'bind'} without IPv6";
462 push(@sockets, [ inet_pton(Socket6::AF_INET6(),$config{'bind'}),
464 Socket6::PF_INET6() ]);
468 push(@sockets, [ inet_aton($config{'bind'}),
474 # Listening on all IPs
475 push(@sockets, [ INADDR_ANY, $config{'port'}, PF_INET() ]);
478 push(@sockets, [ in6addr_any(), $config{'port'},
479 Socket6::PF_INET6() ]);
482 foreach $s (split(/\s+/, $config{'sockets'})) {
483 if ($s =~ /^(\d+)$/) {
484 # Just listen on another port on the main IP
485 push(@sockets, [ $sockets[0]->[0], $s, $sockets[0]->[2] ]);
486 if ($use_ipv6 && !$config{'bind'}) {
487 # Also listen on that port on the main IPv6 address
488 push(@sockets, [ $sockets[1]->[0], $s,
492 elsif ($s =~ /^\*:(\d+)$/) {
493 # Listening on all IPs on some port
494 push(@sockets, [ INADDR_ANY, $1,
497 push(@sockets, [ in6addr_any(), $1,
498 Socket6::PF_INET6() ]);
501 elsif ($s =~ /^(\S+):(\d+)$/) {
502 # Listen on a specific port and IP
503 my ($ip, $port) = ($1, $2);
504 if (&check_ip6address($ip)) {
505 $use_ipv6 || die "Cannot bind to $ip without IPv6";
506 push(@sockets, [ inet_pton(Socket6::AF_INET6(),
508 $port, Socket6::PF_INET6() ]);
511 push(@sockets, [ inet_aton($ip), $port,
515 elsif ($s =~ /^([0-9\.]+):\*$/ || $s =~ /^([0-9\.]+)$/) {
516 # Listen on the main port on another IPv4 address
517 push(@sockets, [ inet_aton($1), $sockets[0]->[1],
520 elsif (($s =~ /^([0-9a-f\:]+):\*$/ || $s =~ /^([0-9a-f\:]+)$/) &&
522 # Listen on the main port on another IPv6 address
523 push(@sockets, [ inet_pton(Socket6::AF_INET6(), $1),
525 Socket6::PF_INET6() ]);
529 # Open all the sockets
530 $proto = getprotobyname('tcp');
532 $tried_inaddr_any = 0;
533 for($i=0; $i<@sockets; $i++) {
535 socket($fh, $sockets[$i]->[2], SOCK_STREAM, $proto) ||
536 die "Failed to open socket family $sockets[$i]->[2] : $!";
537 setsockopt($fh, SOL_SOCKET, SO_REUSEADDR, pack("l", 1));
538 if ($sockets[$i]->[2] eq PF_INET()) {
539 $pack = pack_sockaddr_in($sockets[$i]->[1], $sockets[$i]->[0]);
542 $pack = pack_sockaddr_in6($sockets[$i]->[1], $sockets[$i]->[0]);
543 setsockopt($fh, 41, 26, pack("l", 1)); # IPv6 only
545 for($j=0; $j<5; $j++) {
546 last if (bind($fh, $pack));
550 # All attempts failed .. give up
551 if ($sockets[$i]->[0] eq INADDR_ANY ||
552 $use_ipv6 && $sockets[$i]->[0] eq in6addr_any()) {
554 "Failed to bind to port $sockets[$i]->[1] : $!");
555 $tried_inaddr_any = 1;
558 $ip = &network_to_address($sockets[$i]->[0]);
560 "Failed to bind to IP $ip port ".
561 "$sockets[$i]->[1] : $!");
565 listen($fh, SOMAXCONN);
566 push(@socketfhs, $fh);
567 $ipv6fhs{$fh} = $sockets[$i]->[2] eq PF_INET() ? 0 : 1;
570 foreach $se (@sockerrs) {
571 print STDERR $se,"\n";
574 # If all binds failed, try binding to any address
575 if (!@socketfhs && !$tried_inaddr_any) {
576 print STDERR "Falling back to listening on any address\n";
578 socket($fh, PF_INET(), SOCK_STREAM, $proto) ||
579 die "Failed to open socket : $!";
580 setsockopt($fh, SOL_SOCKET, SO_REUSEADDR, pack("l", 1));
581 if (!bind($fh, pack_sockaddr_in($sockets[0]->[1], INADDR_ANY))) {
582 print STDERR "Failed to bind to port $sockets[0]->[1] : $!\n";
585 listen($fh, SOMAXCONN);
586 push(@socketfhs, $fh);
588 elsif (!@socketfhs && $tried_inaddr_any) {
589 print STDERR "Could not listen on any ports";
593 if ($config{'listen'}) {
594 # Open the socket that allows other webmin servers to find this one
595 $proto = getprotobyname('udp');
596 if (socket(LISTEN, PF_INET(), SOCK_DGRAM, $proto)) {
597 setsockopt(LISTEN, SOL_SOCKET, SO_REUSEADDR, pack("l", 1));
598 bind(LISTEN, pack_sockaddr_in($config{'listen'}, INADDR_ANY));
599 listen(LISTEN, SOMAXCONN);
602 $config{'listen'} = 0;
606 # Split from the controlling terminal, unless configured not to
607 if (!$config{'nofork'}) {
608 if (fork()) { exit; }
610 eval { setsid(); }; # may not work on Windows
612 # Close standard file handles
613 open(STDIN, "</dev/null");
614 open(STDOUT, ">/dev/null");
615 &redirect_stderr_to_log();
616 &log_error("miniserv.pl started");
617 foreach $msg (@startup_msg) {
621 # write out the PID file
624 # Start the log-clearing process, if needed. This checks every minute
625 # to see if the log has passed its reset time, and if so clears it
626 if ($config{'logclear'}) {
627 if (!($logclearer = fork())) {
628 &close_all_sockets();
631 local $write_logtime = 0;
632 local @st = stat("$config{'logfile'}.time");
634 if ($st[9]+$config{'logtime'}*60*60 < time()){
637 unlink($config{'logfile'});
640 else { $write_logtime = 1; }
641 if ($write_logtime) {
642 open(LOGTIME, ">$config{'logfile'}.time");
643 print LOGTIME time(),"\n";
650 push(@childpids, $logclearer);
653 # Setup the logout time dbm if needed
654 if ($config{'session'}) {
655 eval "use SDBM_File";
656 dbmopen(%sessiondb, $config{'sessiondb'}, 0700);
657 eval "\$sessiondb{'1111111111'} = 'foo bar';";
659 dbmclose(%sessiondb);
660 eval "use NDBM_File";
661 dbmopen(%sessiondb, $config{'sessiondb'}, 0700);
664 delete($sessiondb{'1111111111'});
669 $SIG{'HUP'} = 'miniserv::trigger_restart';
670 $SIG{'TERM'} = 'miniserv::term_handler';
671 $SIG{'USR1'} = 'miniserv::trigger_reload';
672 $SIG{'PIPE'} = 'IGNORE';
673 local $remove_session_count = 0;
674 $need_pipes = $config{'passdelay'} || $config{'session'};
676 # wait for a new connection, or a message from a child process
678 if (@childpids <= $config{'maxconns'}) {
679 # Only accept new main socket connects when ready
681 foreach $s (@socketfhs) {
682 vec($rmask, fileno($s), 1) = 1;
686 printf STDERR "too many children (%d > %d)\n",
687 scalar(@childpids), $config{'maxconns'};
690 for($i=0; $i<@passin; $i++) {
691 vec($rmask, fileno($passin[$i]), 1) = 1;
694 vec($rmask, fileno(LISTEN), 1) = 1 if ($config{'listen'});
696 # Wait for a connection
697 local $sel = select($rmask, undef, undef, 10);
699 # Check the flag files
700 if ($config{'restartflag'} && -r $config{'restartflag'}) {
701 print STDERR "restart flag file detected\n";
702 unlink($config{'restartflag'});
705 if ($config{'reloadflag'} && -r $config{'reloadflag'}) {
706 unlink($config{'reloadflag'});
711 # Got a HUP signal while in select() .. restart now
715 # Got a USR1 signal while in select() .. re-read config
717 &reload_config_file();
719 local $time_now = time();
721 # Clean up finished processes
723 do { $pid = waitpid(-1, WNOHANG);
724 @childpids = grep { $_ != $pid } @childpids;
725 } while($pid != 0 && $pid != -1);
727 # run the unblocking procedure to check if enough time has passed to
728 # unblock hosts that heve been blocked because of password failures
730 if ($config{'blockhost_failures'}) {
732 while ($i <= $#deny) {
733 if ($blockhosttime{$deny[$i]} &&
734 $config{'blockhost_time'} != 0 &&
735 ($time_now - $blockhosttime{$deny[$i]}) >=
736 $config{'blockhost_time'}) {
737 # the host can be unblocked now
738 $hostfail{$deny[$i]} = 0;
739 splice(@deny, $i, 1);
746 # Do the same for blocked users
747 if ($config{'blockuser_failures'}) {
749 while ($i <= $#deny) {
750 if ($blockusertime{$deny[$i]} &&
751 $config{'blockuser_time'} != 0 &&
752 ($time_now - $blockusertime{$deny[$i]}) >=
753 $config{'blockuser_time'}) {
754 # the user can be unblocked now
755 $userfail{$deny[$i]} = 0;
756 splice(@denyusers, $i, 1);
763 &write_blocked_file();
766 # Check if any webmin cron jobs are ready to run
767 &execute_ready_webmin_crons();
769 if ($config{'session'} && (++$remove_session_count%50) == 0) {
770 # Remove sessions with more than 7 days of inactivity,
772 foreach $s (keys %sessiondb) {
773 local ($user, $ltime, $lip) =
774 split(/\s+/, $sessiondb{$s});
775 if ($time_now - $ltime > 7*24*60*60) {
776 &run_logout_script($s, $user);
777 &write_logout_utmp($user, $lip);
778 delete($sessiondb{$s});
781 "Timeout of session for $user");
787 if ($use_pam && $config{'pam_conv'}) {
788 # Remove PAM sessions with more than 5 minutes of inactivity
790 foreach $c (values %conversations) {
791 if ($time_now - $c->{'time'} > 5*60) {
792 &end_pam_conversation($c);
794 syslog("info", "%s", "Timeout of PAM ".
795 "session for $c->{'user'}");
801 # Don't check any sockets if there is no activity
804 # Check if any of the main sockets have received a new connection
806 foreach $s (@socketfhs) {
807 if (vec($rmask, fileno($s), 1)) {
809 $acptaddr = accept(SOCK, $s);
810 if (!$acptaddr) { next; }
811 binmode(SOCK); # turn off any Perl IO stuff
814 local ($PASSINr, $PASSINw, $PASSOUTr, $PASSOUTw);
816 ($PASSINr, $PASSINw, $PASSOUTr, $PASSOUTw) =
820 # Work out IP and port of client
821 local ($peerb, $peera, $peerp) =
822 &get_address_ip($acptaddr, $ipv6fhs{$s});
824 # Work out the local IP
825 (undef, $locala) = &get_socket_ip(SOCK, $ipv6fhs{$s});
827 # Check username of connecting user
828 $localauth_user = undef;
829 if ($config{'localauth'} && $peera eq "127.0.0.1") {
830 if (open(TCP, "/proc/net/tcp")) {
831 # Get the info direct from the kernel
832 $peerh = sprintf("%4.4X", $peerp);
835 local @t = split(/[\s:]+/, $_);
836 if ($t[1] eq '0100007F' &&
845 if (!$localauth_user) {
846 # Call lsof for the info
847 local $lsofpid = open(LSOF,
848 "$config{'localauth'} -i ".
849 "TCP\@127.0.0.1:$peerp |");
851 if (/^(\S+)\s+(\d+)\s+(\S+)/ &&
852 $2 != $$ && $2 != $lsofpid){
853 $localauth_user = $3;
860 # Work out the hostname for this web server
861 $host = &get_socket_name(SOCK, $ipv6fhs{$s});
864 "Failed to get local socket name : $!\n";
868 $port = $sockets[$sn]->[1];
870 # fork the subprocess
872 if (!($handpid = fork())) {
873 # setup signal handlers
874 $SIG{'TERM'} = 'DEFAULT';
875 $SIG{'PIPE'} = 'DEFAULT';
876 #$SIG{'CHLD'} = 'IGNORE';
877 $SIG{'HUP'} = 'IGNORE';
878 $SIG{'USR1'} = 'IGNORE';
880 # Initialize SSL for this connection
882 $ssl_con = &ssl_connection_for_ip(
887 # Close the file handle for the session DBM
888 dbmclose(%sessiondb);
890 # close useless pipes
893 close($PASSINr); close($PASSOUTw);
895 &close_all_sockets();
899 "main: Starting handle_request loop pid=$$\n";
900 while(&handle_request($peera, $locala,
902 # Loop until keepalive stops
905 "main: Done handle_request loop pid=$$\n";
908 close($PASSINw); close($PASSOUTw);
911 push(@childpids, $handpid);
913 close($PASSINw); close($PASSOUTr);
914 push(@passin, $PASSINr);
915 push(@passout, $PASSOUTw);
922 if ($config{'listen'} && vec($rmask, fileno(LISTEN), 1)) {
923 # Got UDP packet from another webmin server
925 local $from = recv(LISTEN, $rcvbuf, 1024, 0);
927 local $fromip = inet_ntoa((unpack_sockaddr_in($from))[1]);
928 local $toip = inet_ntoa((unpack_sockaddr_in(
929 getsockname(LISTEN)))[1]);
930 if ((!@deny || !&ip_match($fromip, $toip, @deny)) &&
931 (!@allow || &ip_match($fromip, $toip, @allow))) {
932 local $listenhost = &get_socket_name(LISTEN, 0);
933 send(LISTEN, "$listenhost:$config{'port'}:".
934 ($use_ssl || $config{'inetd_ssl'} ? 1 : 0).":".
935 ($config{'listenhost'} ?
936 &get_system_hostname() : ""),
942 # check for session, password-timeout and PAM messages from subprocesses
943 for($i=0; $i<@passin; $i++) {
944 if (vec($rmask, fileno($passin[$i]), 1)) {
945 # this sub-process is asking about a password
946 local $infd = $passin[$i];
947 local $outfd = $passout[$i];
948 #local $inline = <$infd>;
949 local $inline = &sysread_line($infd);
951 print DEBUG "main: inline $inline";
954 print DEBUG "main: inline EOF\n";
956 if ($inline =~ /^delay\s+(\S+)\s+(\S+)\s+(\d+)/) {
957 # Got a delay request from a subprocess.. for
958 # valid logins, there is no delay (to prevent
959 # denial of service attacks), but for invalid
960 # logins the delay increases with each failed
963 # login OK.. no delay
964 print $outfd "0 0\n";
965 $wasblocked = $hostfail{$2} ||
970 &write_blocked_file();
979 # add the host to the block list,
981 if ($config{'blockhost_failures'} &&
983 $config{'blockhost_failures'}) {
985 $blockhosttime{$2} = $time_now;
988 local $logtext = "Security alert: Host $2 blocked after $config{'blockhost_failures'} failed logins for user $1";
994 # add the user to the user block list,
996 if ($config{'blockuser_failures'} &&
998 $config{'blockuser_failures'}) {
999 push(@denyusers, $1);
1000 $blockusertime{$1} = $time_now;
1003 local $logtext = "Security alert: User $1 blocked after $config{'blockuser_failures'} failed logins";
1004 syslog("crit", "%s",
1009 # Lock out the user's password, if enabled
1010 if ($config{'blocklock'} &&
1012 $config{'blockuser_failures'}) {
1013 my $lk = &lock_user_password($1);
1016 local $logtext = $lk == 1 ? "Security alert: User $1 locked after $config{'blockuser_failures'} failed logins" : $lk < 0 ? "Security alert: User could not be locked" : "Security alert: User is already locked";
1017 syslog("crit", "%s",
1023 $dl = $userdlay{$1} -
1024 int(($time_now - $userlast{$1})/50);
1025 $dl = $dl < 0 ? 0 : $dl+1;
1026 print $outfd "$dl $blocked\n";
1027 $userdlay{$1} = $dl;
1029 # Write out blocked status file
1031 &write_blocked_file();
1034 $userlast{$1} = $time_now;
1036 elsif ($inline =~ /^verify\s+(\S+)\s+(\S+)/) {
1037 # Verifying a session ID
1038 local $session_id = $1;
1039 local $notimeout = $2;
1040 local $skey = $sessiondb{$session_id} ?
1042 &hash_session_id($session_id);
1043 if (!defined($sessiondb{$skey})) {
1044 # Session doesn't exist
1045 print $outfd "0 0\n";
1048 local ($user, $ltime) =
1049 split(/\s+/, $sessiondb{$skey});
1050 local $lot = &get_logout_time($user, $session_id);
1052 $time_now - $ltime > $lot*60 &&
1054 # Session has timed out
1055 print $outfd "1 ",$time_now - $ltime,"\n";
1056 #delete($sessiondb{$skey});
1060 print $outfd "2 $user\n";
1062 $time_now - $ltime >
1064 $sessiondb{$skey} = "$user $time_now";
1069 elsif ($inline =~ /^new\s+(\S+)\s+(\S+)\s+(\S+)/) {
1070 # Creating a new session
1071 local $session_id = $1;
1074 $sessiondb{&hash_session_id($session_id)} =
1075 "$user $time_now $ip";
1077 elsif ($inline =~ /^delete\s+(\S+)/) {
1078 # Logging out a session
1079 local $session_id = $1;
1080 local $skey = $sessiondb{$session_id} ?
1082 &hash_session_id($session_id);
1083 local @sdb = split(/\s+/, $sessiondb{$skey});
1084 print $outfd $sdb[0],"\n";
1085 delete($sessiondb{$skey});
1087 elsif ($inline =~ /^pamstart\s+(\S+)\s+(\S+)\s+(.*)/) {
1088 # Starting a new PAM conversation
1089 local ($cid, $host, $user) = ($1, $2, $3);
1091 # Does this user even need PAM?
1092 local ($realuser, $canlogin) =
1093 &can_user_login($user, undef, $host);
1095 if ($canlogin == 0) {
1096 # Cannot even login!
1097 print $outfd "0 Invalid username\n";
1099 elsif ($canlogin != 2) {
1100 # Not using PAM .. so just ask for
1102 $conv = { 'user' => $realuser,
1107 print $outfd "3 Password\n";
1110 # Start the PAM conversation
1111 # sub-process, and get a question
1112 $conv = { 'user' => $realuser,
1116 local ($PAMINr, $PAMINw, $PAMOUTr,
1117 $PAMOUTw) = &allocate_pipes();
1118 local $pampid = fork();
1120 close($PAMOUTr); close($PAMINw);
1121 &pam_conversation_process(
1125 close($PAMOUTw); close($PAMINr);
1126 $conv->{'pid'} = $pampid;
1127 $conv->{'PAMOUTr'} = $PAMOUTr;
1128 $conv->{'PAMINw'} = $PAMINw;
1129 push(@childpids, $pampid);
1131 # Get the first PAM question
1132 local $pok = &recv_pam_question(
1135 &end_pam_conversation($conv);
1139 $conversations{$cid} = $conv if ($conv);
1141 elsif ($inline =~ /^pamanswer\s+(\S+)\s+(.*)/) {
1142 # A response to a PAM question
1143 local ($cid, $answer) = ($1, $2);
1144 local $conv = $conversations{$cid};
1146 # No such conversation?
1147 print $outfd "0 Bad login session\n";
1149 elsif ($conv->{'pid'}) {
1150 # Send the PAM response and get
1152 &send_pam_answer($conv, $answer);
1153 local $pok = &recv_pam_question($conv, $outfd);
1155 &end_pam_conversation($conv);
1159 # This must be the password .. try it
1160 # and send back the results
1161 local ($vu, $expired, $nonexist) =
1162 &validate_user($conv->{'user'},
1165 local $ok = $vu ? 1 : 0;
1166 print $outfd "2 $conv->{'user'} $ok $expired $notexist\n";
1167 &end_pam_conversation($conv);
1170 elsif ($inline =~ /^writesudo\s+(\S+)\s+(\d+)/) {
1171 # Store the fact that some user can sudo to root
1172 local ($user, $ok) = ($1, $2);
1173 $sudocache{$user} = $ok." ".time();
1175 elsif ($inline =~ /^readsudo\s+(\S+)/) {
1176 # Query the user sudo cache (valid for 1 minute)
1178 local ($ok, $last) =
1179 split(/\s+/, $sudocache{$user});
1180 if ($last < time()-60) {
1185 # Tell client OK or not
1186 print $outfd "$ok\n";
1189 elsif ($inline =~ /\S/) {
1190 # Unknown line from pipe?
1191 print DEBUG "main: Unknown line from pipe $inline\n";
1192 print STDERR "Unknown line from pipe $inline\n";
1196 close($infd); close($outfd);
1197 $passin[$i] = $passout[$i] = undef;
1201 @passin = grep { defined($_) } @passin;
1202 @passout = grep { defined($_) } @passout;
1205 # handle_request(remoteaddress, localaddress, ipv6-flag)
1206 # Where the real work is done
1209 local ($acptip, $localip, $ipv6) = @_;
1210 print DEBUG "handle_request: from $acptip to $localip ipv6=$ipv6\n";
1211 if ($config{'loghost'}) {
1212 $acpthost = &to_hostname($acptip);
1213 $acpthost = $acptip if (!$acpthost);
1216 $acpthost = $acptip;
1218 $datestr = &http_date(time());
1220 $ok_message = "Document follows";
1221 $logged_code = undef;
1222 $reqline = $request_uri = $page = undef;
1226 # check address against access list
1227 if (@deny && &ip_match($acptip, $localip, @deny) ||
1228 @allow && !&ip_match($acptip, $localip, @allow)) {
1229 &http_error(403, "Access denied for $acptip");
1234 # Check address with TCP-wrappers
1235 if (!hosts_ctl($config{'pam'}, STRING_UNKNOWN,
1236 $acptip, STRING_UNKNOWN)) {
1237 &http_error(403, "Access denied for $acptip by TCP wrappers");
1241 print DEBUG "handle_request: passed IP checks\n";
1243 # Compute a timeout for the start of headers, based on the number of
1244 # child processes. As this increases, we use a shorter timeout to avoid
1245 # an attacker overloading the system.
1246 local $header_timeout = 60 + ($config{'maxconns'} - @childpids) * 10;
1248 # Wait at most 60 secs for start of headers for initial requests, or
1249 # 10 minutes for kept-alive connections
1251 vec($rmask, fileno(SOCK), 1) = 1;
1252 local $to = $checked_timeout ? 10*60 : $header_timeout;
1253 local $sel = select($rmask, undef, undef, $to);
1255 if ($checked_timeout) {
1256 print DEBUG "handle_request: exiting due to timeout of $to\n";
1260 &http_error(400, "Timeout",
1261 "Waited for that $to seconds for start of headers");
1265 print DEBUG "handle_request: passed timeout check\n";
1267 # Read the HTTP request and headers
1268 local $origreqline = &read_line();
1269 ($reqline = $origreqline) =~ s/\r|\n//g;
1270 $method = $page = $request_uri = undef;
1271 print DEBUG "handle_request reqline=$reqline\n";
1272 if (!$reqline && (!$use_ssl || $checked_timeout > 1)) {
1273 # An empty request .. just close the connection
1274 print DEBUG "handle_request: rejecting empty request\n";
1277 elsif ($reqline !~ /^(\S+)\s+(.*)\s+HTTP\/1\..$/) {
1278 print DEBUG "handle_request: invalid reqline=$reqline\n";
1280 # This could be an http request when it should be https
1282 local $url = $config{'musthost'} ?
1283 "https://$config{'musthost'}:$port/" :
1284 "https://$host:$port/";
1285 if ($config{'ssl_redirect'}) {
1286 # Just re-direct to the correct URL
1287 sleep(1); # Give browser a change to finish
1288 # sending its request
1289 &write_data("HTTP/1.0 302 Moved Temporarily\r\n");
1290 &write_data("Date: $datestr\r\n");
1291 &write_data("Server: $config{'server'}\r\n");
1292 &write_data("Location: $url\r\n");
1293 &write_keep_alive(0);
1294 &write_data("\r\n");
1298 # Tell user the correct URL
1299 &http_error(200, "Bad Request", "This web server is running in SSL mode. Try the URL <a href='$url'>$url</a> instead.<br>");
1302 elsif (ord(substr($reqline, 0, 1)) == 128 && !$use_ssl) {
1303 # This could be an https request when it should be http ..
1304 # need to fake a HTTP response
1307 eval "Net::SSLeay::SSLeay_add_ssl_algorithms()";
1308 eval "Net::SSLeay::load_error_strings()";
1309 $ssl_ctx = Net::SSLeay::CTX_new();
1310 Net::SSLeay::CTX_use_RSAPrivateKey_file(
1311 $ssl_ctx, $config{'keyfile'},
1312 &Net::SSLeay::FILETYPE_PEM);
1313 Net::SSLeay::CTX_use_certificate_file(
1315 $config{'certfile'} || $config{'keyfile'},
1316 &Net::SSLeay::FILETYPE_PEM);
1317 $ssl_con = Net::SSLeay::new($ssl_ctx);
1321 select(SSLw); $| = 1; select(STDOUT);
1322 print SSLw $origreqline;
1324 while(sysread(SOCK, $buf, 1) > 0) {
1331 Net::SSLeay::set_wfd($ssl_con, fileno(SOCK));
1332 Net::SSLeay::set_rfd($ssl_con, fileno(SSLr));
1333 Net::SSLeay::accept($ssl_con) || die "accept() failed";
1335 local $url = $config{'musthost'} ?
1336 "https://$config{'musthost'}:$port/" :
1337 "https://$host:$port/";
1338 if ($config{'ssl_redirect'}) {
1339 # Just re-direct to the correct URL
1340 sleep(1); # Give browser a change to
1341 # finish sending its request
1342 &write_data("HTTP/1.0 302 Moved Temporarily\r\n");
1343 &write_data("Date: $datestr\r\n");
1344 &write_data("Server: $config{'server'}\r\n");
1345 &write_data("Location: $url\r\n");
1346 &write_keep_alive(0);
1347 &write_data("\r\n");
1351 # Tell user the correct URL
1352 &http_error(200, "Bad Request", "This web server is not running in SSL mode. Try the URL <a href='$url'>$url</a> instead.<br>");
1356 &http_error(400, "Bad Request");
1360 &http_error(400, "Bad Request");
1364 $request_uri = $page = $2;
1368 ($headline = &read_line()) =~ s/\r|\n//g;
1369 last if ($headline eq "");
1370 print DEBUG "handle_request: got headline $headline\n";
1371 if ($headline =~ /^(\S+):\s*(.*)$/) {
1372 $header{$lastheader = lc($1)} = $2;
1374 elsif ($headline =~ /^\s+(.*)$/) {
1375 $header{$lastheader} .= $headline;
1378 &http_error(400, "Bad Header $headline");
1381 if (defined($header{'host'})) {
1382 if ($header{'host'} =~ /^([^:]+):([0-9]+)$/) {
1383 ($host, $port) = ($1, $2);
1386 $host = $header{'host'};
1388 if ($config{'musthost'} && $host ne $config{'musthost'}) {
1389 # Disallowed hostname used
1390 &http_error(400, "Invalid HTTP hostname");
1394 if ($page =~ /^([^\?]+)\?(.*)$/) {
1395 # There is some query string information
1398 print DEBUG "handle_request: querystring=$querystring\n";
1399 if ($querystring !~ /=/) {
1400 $queryargs = $querystring;
1401 $queryargs =~ s/\+/ /g;
1402 $queryargs =~ s/%(..)/pack("c",hex($1))/ge;
1406 # Parse query-string parameters
1407 local @in = split(/\&/, $querystring);
1409 local ($k, $v) = split(/=/, $i, 2);
1410 $k =~ s/\+/ /g; $k =~ s/%(..)/pack("c",hex($1))/ge;
1411 $v =~ s/\+/ /g; $v =~ s/%(..)/pack("c",hex($1))/ge;
1416 $posted_data = undef;
1417 if ($method eq 'POST' &&
1418 $header{'content-type'} eq 'application/x-www-form-urlencoded') {
1419 # Read in posted query string information, up the configured maximum
1420 # post request length
1421 $clen = $header{"content-length"};
1422 $clen_read = $clen > $config{'max_post'} ? $config{'max_post'} : $clen;
1423 while(length($posted_data) < $clen_read) {
1424 $buf = &read_data($clen_read - length($posted_data));
1425 if (!length($buf)) {
1426 &http_error(500, "Failed to read POST request");
1428 chomp($posted_data);
1429 $posted_data =~ s/\015$//mg;
1430 $posted_data .= $buf;
1432 print DEBUG "clen_read=$clen_read clen=$clen posted_data=",length($posted_data),"\n";
1433 if ($clen_read != $clen && length($posted_data) > $clen) {
1434 # If the client sent more data than we asked for, chop the
1436 $posted_data = substr($posted_data, 0, $clen);
1438 if (length($posted_data) > $clen) {
1439 # When the client sent too much, delay so that it gets headers
1442 if ($header{'user-agent'} =~ /MSIE/ &&
1443 $header{'user-agent'} !~ /Opera/i) {
1444 # MSIE includes an extra newline in the data
1445 $posted_data =~ s/\r|\n//g;
1447 local @in = split(/\&/, $posted_data);
1449 local ($k, $v) = split(/=/, $i, 2);
1451 $k =~ s/\+/ /g; $k =~ s/%(..)/pack("c",hex($1))/ge;
1452 $v =~ s/\+/ /g; $v =~ s/%(..)/pack("c",hex($1))/ge;
1455 print DEBUG "handle_request: posted_data=$posted_data\n";
1458 # work out accepted encodings
1459 %acceptenc = map { $_, 1 } split(/,/, $header{'accept-encoding'});
1461 # replace %XX sequences in page
1462 $page =~ s/%(..)/pack("c",hex($1))/ge;
1464 # Check if the browser's user agent indicates a mobile device
1465 $mobile_device = &is_mobile_useragent($header{'user-agent'});
1467 # Check if Host: header is for a mobile URL
1468 foreach my $m (@mobile_prefixes) {
1469 if ($header{'host'} =~ /^\Q$m\E/i) {
1474 # check for the logout flag file, and if existant deny authentication
1475 if ($config{'logout'} && -r $config{'logout'}.$in{'miniserv_logout_id'}) {
1476 print DEBUG "handle_request: logout flag set\n";
1477 $deny_authentication++;
1478 open(LOGOUT, $config{'logout'}.$in{'miniserv_logout_id'});
1479 chop($count = <LOGOUT>);
1483 open(LOGOUT, ">$config{'logout'}$in{'miniserv_logout_id'}");
1484 print LOGOUT "$count\n";
1488 unlink($config{'logout'}.$in{'miniserv_logout_id'});
1492 # check for any redirect for the requested URL
1493 foreach my $pfx (@strip_prefix) {
1494 my $l = length($pfx);
1495 if(length($page) >= $l &&
1496 substr($page,0,$l) eq $pfx) {
1497 $page=substr($page,$l);
1501 $simple = &simplify_path($page, $bogus);
1503 $rpath .= "&".$querystring if (defined($querystring));
1504 $redir = $redirect{$rpath};
1505 if (defined($redir)) {
1506 print DEBUG "handle_request: redir=$redir\n";
1507 &write_data("HTTP/1.0 302 Moved Temporarily\r\n");
1508 &write_data("Date: $datestr\r\n");
1509 &write_data("Server: $config{'server'}\r\n");
1510 local $ssl = $use_ssl || $config{'inetd_ssl'};
1511 $portstr = $port == 80 && !$ssl ? "" :
1512 $port == 443 && $ssl ? "" : ":$port";
1513 $prot = $ssl ? "https" : "http";
1514 &write_data("Location: $prot://$host$portstr$redir\r\n");
1515 &write_keep_alive(0);
1516 &write_data("\r\n");
1520 # Check for a DAV request
1522 foreach my $d (@davpaths) {
1523 if ($simple eq $d || $simple =~ /^\Q$d\E\//) {
1528 if (!$davpath && ($method eq "SEARCH" || $method eq "PUT")) {
1529 &http_error(400, "Bad Request method $method");
1532 # Check for password if needed
1533 if ($config{'userfile'}) {
1534 print DEBUG "handle_request: Need authentication\n";
1538 # Session authentication is never used for connections by
1539 # another webmin server, or for specified pages, or for DAV, or XMLRPC,
1540 # or mobile browsers if requested.
1541 if ($header{'user-agent'} =~ /webmin/i ||
1542 $header{'user-agent'} =~ /$config{'agents_nosession'}/i ||
1543 $sessiononly{$simple} || $davpath ||
1544 $simple eq "/xmlrpc.cgi" ||
1545 $acptip eq $config{'host_nosession'} ||
1546 $mobile_device && $config{'mobile_nosession'}) {
1547 print DEBUG "handle_request: Forcing HTTP authentication\n";
1548 $config{'session'} = 0;
1551 # Check for SSL authentication
1552 if ($use_ssl && $verified_client) {
1553 $peername = Net::SSLeay::X509_NAME_oneline(
1554 Net::SSLeay::X509_get_subject_name(
1555 Net::SSLeay::get_peer_certificate(
1557 $u = &find_user_by_cert($peername);
1562 if ($use_syslog && !$validated) {
1563 syslog("crit", "%s",
1564 "Unknown SSL certificate $peername");
1568 if (!$validated && !$deny_authentication) {
1569 # check for IP-based authentication
1571 foreach $a (keys %ipaccess) {
1572 if ($acptip eq $a) {
1573 # It does! Auth as the user
1575 $baseauthuser = $authuser =
1581 # Check for normal HTTP authentication
1582 if (!$validated && !$deny_authentication && !$config{'session'} &&
1583 $header{authorization} =~ /^basic\s+(\S+)$/i) {
1584 # authorization given..
1585 ($authuser, $authpass) = split(/:/, &b64decode($1), 2);
1586 print DEBUG "handle_request: doing basic auth check authuser=$authuser authpass=$authpass\n";
1587 local ($vu, $expired, $nonexist) =
1588 &validate_user($authuser, $authpass, $host,
1590 print DEBUG "handle_request: vu=$vu expired=$expired nonexist=$nonexist\n";
1591 if ($vu && (!$expired || $config{'passwd_mode'} == 1)) {
1598 if ($use_syslog && !$validated) {
1599 syslog("crit", "%s",
1600 ($nonexist ? "Non-existent" :
1601 $expired ? "Expired" : "Invalid").
1602 " login as $authuser from $acpthost");
1604 if ($authuser =~ /\r|\n|\s/) {
1605 &http_error(500, "Invalid username",
1606 "Username contains invalid characters");
1608 if ($authpass =~ /\r|\n/) {
1609 &http_error(500, "Invalid password",
1610 "Password contains invalid characters");
1613 if ($config{'passdelay'} && !$config{'inetd'} && $authuser) {
1614 # check with main process for delay
1615 print DEBUG "handle_request: about to ask for password delay\n";
1616 print $PASSINw "delay $authuser $acptip $validated\n";
1617 <$PASSOUTr> =~ /(\d+) (\d+)/;
1619 print DEBUG "handle_request: password delay $1 $2\n";
1624 # Check for a visit to the special session login page
1625 if ($config{'session'} && !$deny_authentication &&
1626 $page eq $config{'session_login'}) {
1627 if ($in{'logout'} && $header{'cookie'} =~ /(^|\s)$sidname=([a-f0-9]+)/) {
1628 # Logout clicked .. remove the session
1630 print $PASSINw "delete $sid\n";
1631 local $louser = <$PASSOUTr>;
1634 $already_session_id = undef;
1635 $authuser = $baseauthuser = undef;
1638 syslog("info", "%s", "Logout by $louser from $acpthost");
1640 &run_logout_script($louser, $sid,
1642 &write_logout_utmp($louser, $actphost);
1647 if ($in{'user'} =~ /\r|\n|\s/) {
1648 &http_error(500, "Invalid username",
1649 "Username contains invalid characters");
1651 if ($in{'pass'} =~ /\r|\n/) {
1652 &http_error(500, "Invalid password",
1653 "Password contains invalid characters");
1656 local ($vu, $expired, $nonexist) =
1657 &validate_user($in{'user'}, $in{'pass'}, $host,
1659 local $hrv = &handle_login(
1660 $vu || $in{'user'}, $vu ? 1 : 0,
1661 $expired, $nonexist, $in{'pass'},
1662 $in{'notestingcookie'});
1663 return $hrv if (defined($hrv));
1667 # Check for a visit to the special PAM login page
1668 if ($config{'session'} && !$deny_authentication &&
1669 $use_pam && $config{'pam_conv'} && $page eq $config{'pam_login'} &&
1671 # A question has been entered .. submit it to the main process
1672 print DEBUG "handle_request: Got call to $page ($in{'cid'})\n";
1673 print DEBUG "handle_request: For PAM, authuser=$authuser\n";
1674 if ($in{'answer'} =~ /\r|\n/ || $in{'cid'} =~ /\r|\n|\s/) {
1675 &http_error(500, "Invalid response",
1676 "Response contains invalid characters");
1680 # Start of a new conversation - answer must be username
1681 $cid = &generate_random_id($in{'answer'});
1682 print $PASSINw "pamstart $cid $host $in{'answer'}\n";
1685 # A response to a previous question
1687 print $PASSINw "pamanswer $cid $in{'answer'}\n";
1690 # Read back the response, and the next question (if any)
1691 local $line = <$PASSOUTr>;
1692 $line =~ s/\r|\n//g;
1693 local ($rv, $question) = split(/\s+/, $line, 2);
1696 local $hrv = &handle_login(
1697 !$in{'cid'} && $in{'answer'} ? $in{'answer'}
1700 return $hrv if (defined($hrv));
1702 elsif ($rv == 1 || $rv == 3) {
1703 # Another question .. force use of PAM CGI
1706 $querystring .= "&cid=$cid&question=".
1708 $querystring .= "&password=1" if ($rv == 3);
1710 $page = $config{'pam_login'};
1711 $miniserv_internal = 1;
1715 # Got back a final ok or failure
1716 local ($user, $ok, $expired, $nonexist) =
1717 split(/\s+/, $question);
1718 local $hrv = &handle_login(
1719 $user, $ok, $expired, $nonexist, undef,
1720 $in{'notestingcookie'});
1721 return $hrv if (defined($hrv));
1724 # A message from PAM .. tell the user
1727 $querystring .= "&cid=$cid&message=".
1730 $page = $config{'pam_login'};
1731 $miniserv_internal = 1;
1736 # Check for a visit to the special password change page
1737 if ($config{'session'} && !$deny_authentication &&
1738 $page eq $config{'password_change'} && !$validated) {
1739 # Just let this slide ..
1741 $miniserv_internal = 3;
1744 # Check for an existing session
1745 if ($config{'session'} && !$validated) {
1746 if ($already_session_id) {
1747 $session_id = $already_session_id;
1748 $authuser = $already_authuser;
1751 elsif (!$deny_authentication &&
1752 $header{'cookie'} =~ /(^|\s)$sidname=([a-f0-9]+)/) {
1753 # Try all session cookies
1754 local $cookie = $header{'cookie'};
1755 while($cookie =~ s/(^|\s)$sidname=([a-f0-9]+)//) {
1758 $in{'webmin_notimeout'} ? 1 : 0;
1759 print $PASSINw "verify $session_id $notimeout\n";
1760 <$PASSOUTr> =~ /(\d+)\s+(\S+)/;
1762 # Valid session continuation
1765 $already_authuser = $authuser;
1774 # Invalid session ID .. don't set
1781 # Check for local authentication
1782 if ($localauth_user && !$header{'x-forwarded-for'} && !$header{'via'}) {
1783 my $luser = &get_user_details($localauth_user);
1785 # Local user exists in webmin users file
1787 $authuser = $localauth_user;
1790 # Check if local user is allowed by unixauth
1791 local @can = &can_user_login($localauth_user,
1795 $authuser = $localauth_user;
1798 $localauth_user = undef;
1804 # Check if this path allows anonymous access
1806 foreach $a (keys %anonymous) {
1807 if (substr($simple, 0, length($a)) eq $a) {
1808 # It does! Auth as the user, if IP access
1809 # control allows him.
1810 if (&check_user_ip($anonymous{$a}) &&
1811 &check_user_time($anonymous{$a})) {
1813 $baseauthuser = $authuser =
1821 # Check if this path allows unauthenticated access
1822 local ($u, $unauth);
1823 foreach $u (@unauth) {
1824 $unauth++ if ($simple =~ /$u/);
1826 if (!$bogus && $unauth) {
1827 # Unauthenticated directory or file request - approve it
1829 $baseauthuser = $authuser = undef;
1834 if ($blocked == 0) {
1835 # No password given.. ask
1836 if ($config{'pam_conv'} && $use_pam) {
1837 # Force CGI for PAM question, starting with
1838 # the username which is always needed
1841 $querystring .= "&initial=1&question=".
1842 &urlize("Username");
1843 $querystring .= "&failed=$failed_user" if ($failed_user);
1844 $querystring .= "&timed_out=$timed_out" if ($timed_out);
1846 $page = $config{'pam_login'};
1847 $miniserv_internal = 1;
1850 elsif ($config{'session'}) {
1851 # Force CGI for session login
1854 $querystring .= "&logout=1&page=/";
1857 # Re-direct to current module only
1858 local $rpage = $request_uri;
1859 if (!$config{'loginkeeppage'}) {
1860 $rpage =~ s/\?.*$//;
1861 $rpage =~ s/[^\/]+$//
1863 $querystring = "page=".&urlize($rpage);
1866 $querystring .= "&failed=$failed_user" if ($failed_user);
1867 $querystring .= "&timed_out=$timed_out" if ($timed_out);
1869 $page = $config{'session_login'};
1870 $miniserv_internal = 1;
1874 # Ask for login with HTTP authentication
1875 &write_data("HTTP/1.0 401 Unauthorized\r\n");
1876 &write_data("Date: $datestr\r\n");
1877 &write_data("Server: $config{'server'}\r\n");
1878 &write_data("WWW-authenticate: Basic ".
1879 "realm=\"$config{'realm'}\"\r\n");
1880 &write_keep_alive(0);
1881 &write_data("Content-type: text/html\r\n");
1882 &write_data("\r\n");
1883 &reset_byte_count();
1884 &write_data("<html>\n");
1885 &write_data("<head><title>Unauthorized</title></head>\n");
1886 &write_data("<body><h1>Unauthorized</h1>\n");
1887 &write_data("A password is required to access this\n");
1888 &write_data("web server. Please try again. <p>\n");
1889 &write_data("</body></html>\n");
1890 &log_request($acpthost, undef, $reqline, 401, &byte_count());
1894 elsif ($blocked == 1) {
1895 # when the host has been blocked, give it an error
1896 &http_error(403, "Access denied for $acptip. The host ".
1897 "has been blocked because of too ".
1898 "many authentication failures.");
1900 elsif ($blocked == 2) {
1901 # when the user has been blocked, give it an error
1902 &http_error(403, "Access denied. The user ".
1903 "has been blocked because of too ".
1904 "many authentication failures.");
1908 # Get the real Webmin username
1909 local @can = &can_user_login($authuser, undef, $host);
1910 $baseauthuser = $can[3] || $authuser;
1912 if ($config{'remoteuser'} && !$< && $validated) {
1913 # Switch to the UID of the remote user (if he exists)
1914 local @u = getpwnam($authuser);
1915 if (@u && $< != $u[2]) {
1916 $( = $u[3]; $) = "$u[3] $u[3]";
1917 ($>, $<) = ($u[2], $u[2]);
1920 &http_error(500, "Unix user $authuser does not exist");
1926 # Check per-user IP access control
1927 if (!&check_user_ip($baseauthuser)) {
1928 &http_error(403, "Access denied for $acptip for $baseauthuser");
1932 # Check per-user allowed times
1933 if (!&check_user_time($baseauthuser)) {
1934 &http_error(403, "Access denied at the current time");
1938 $uinfo = &get_user_details($baseauthuser);
1940 # Validate the path, and convert to canonical form
1942 $simple = &simplify_path($page, $bogus);
1943 print DEBUG "handle_request: page=$page simple=$simple\n";
1945 &http_error(400, "Invalid path");
1948 # Check for a DAV request
1950 return &handle_dav_request($davpath);
1953 # Work out the active theme(s)
1954 local $preroots = $mobile_device && defined($config{'mobile_preroot'}) ?
1955 $config{'mobile_preroot'} :
1956 $authuser && defined($config{'preroot_'.$authuser}) ?
1957 $config{'preroot_'.$authuser} :
1958 $uinfo && defined($uinfo->{'preroot'}) ?
1959 $uinfo->{'preroot'} :
1961 local @preroots = reverse(split(/\s+/, $preroots));
1963 # Canonicalize the directories
1964 foreach my $preroot (@preroots) {
1965 # Always under the current webmin root
1966 $preroot =~ s/^.*\///g;
1967 $preroot = $roots[0].'/'.$preroot;
1970 # Look in the theme root directories first
1971 local ($full, @stfull);
1973 foreach my $preroot (@preroots) {
1976 $full = $preroot.$sofar;
1977 $scriptname = $simple;
1978 foreach $b (split(/\//, $simple)) {
1979 if ($b ne "") { $sofar .= "/$b"; }
1980 $full = $preroot.$sofar;
1981 @stfull = stat($full);
1982 if (!@stfull) { undef($full); last; }
1984 # Check if this is a directory
1986 # It is.. go on parsing
1994 # Check if this is a CGI program
1995 if (&get_type($full) eq "internal/cgi") {
1996 $pathinfo = substr($simple, length($sofar));
1997 $pathinfo .= "/" if ($page =~ /\/$/);
1998 $scriptname = $sofar;
2003 # Don't stop at a directory unless this is the last theme, which
2004 # is the 'real' one that provides the .cgi scripts
2005 if ($is_directory && $preroot ne $preroots[$#preroots]) {
2012 $cgi_pwd = $roots[0];
2014 elsif ($is_directory) {
2015 $cgi_pwd = "$roots[0]$sofar";
2018 "$roots[0]$sofar" =~ /^(.*\/)[^\/]+$/;
2021 $foundroot = $preroot;
2022 if ($is_directory) {
2023 # Check for index files in the directory
2025 foreach $idx (split(/\s+/, $config{"index_docs"})) {
2026 $idxfull = "$full/$idx";
2027 local @stidxfull = stat($idxfull);
2028 if (-r _ && !-d _) {
2030 @stfull = @stidxfull;
2033 if ($scriptname ne "/");
2038 @stfull = stat($full) if (!$foundidx);
2041 last if ($foundroot);
2043 print DEBUG "handle_request: initial full=$full\n";
2045 # Look in the real root directories, stopping when we find a file or directory
2046 if (!$full || $is_directory) {
2047 ROOT: foreach $root (@roots) {
2049 $full = $root.$sofar;
2050 $scriptname = $simple;
2051 foreach $b ($simple eq "/" ? ( "" ) : split(/\//, $simple)) {
2052 if ($b ne "") { $sofar .= "/$b"; }
2053 $full = $root.$sofar;
2054 @stfull = stat($full);
2059 # Check if this is a directory
2061 # It is.. go on parsing
2065 # Check if this is a CGI program
2066 if (&get_type($full) eq "internal/cgi") {
2067 $pathinfo = substr($simple, length($sofar));
2068 $pathinfo .= "/" if ($page =~ /\/$/);
2069 $scriptname = $sofar;
2074 # Run CGI in the same directory as whatever file
2076 $full =~ /^(.*\/)[^\/]+$/; $cgi_pwd = $1;
2085 if (!@stfull) { &http_error(404, "File not found"); }
2087 print DEBUG "handle_request: full=$full\n";
2088 @stfull = stat($full) if (!@stfull);
2090 # check filename against denyfile regexp
2091 local $denyfile = $config{'denyfile'};
2092 if ($denyfile && $full =~ /$denyfile/) {
2093 &http_error(403, "Access denied to $page");
2097 # Reached the end of the path OK.. see what we've got
2099 # See if the URL ends with a / as it should
2100 print DEBUG "handle_request: found a directory\n";
2101 if ($page !~ /\/$/) {
2102 # It doesn't.. redirect
2103 &write_data("HTTP/1.0 302 Moved Temporarily\r\n");
2104 $ssl = $use_ssl || $config{'inetd_ssl'};
2105 $portstr = $port == 80 && !$ssl ? "" :
2106 $port == 443 && $ssl ? "" : ":$port";
2107 &write_data("Date: $datestr\r\n");
2108 &write_data("Server: $config{server}\r\n");
2109 $prot = $ssl ? "https" : "http";
2110 &write_data("Location: $prot://$host$portstr$page/\r\n");
2111 &write_keep_alive(0);
2112 &write_data("\r\n");
2113 &log_request($acpthost, $authuser, $reqline, 302, 0);
2116 # A directory.. check for index files
2118 foreach $idx (split(/\s+/, $config{"index_docs"})) {
2119 $idxfull = "$full/$idx";
2120 @stidxfull = stat($idxfull);
2121 if (-r _ && !-d _) {
2124 @stfull = @stidxfull;
2125 $scriptname .= "/" if ($scriptname ne "/");
2130 @stfull = stat($full) if (!$foundidx);
2133 # This is definately a directory.. list it
2134 print DEBUG "handle_request: listing directory\n";
2135 local $resp = "HTTP/1.0 $ok_code $ok_message\r\n".
2136 "Date: $datestr\r\n".
2137 "Server: $config{server}\r\n".
2138 "Content-type: text/html\r\n";
2140 &write_keep_alive(0);
2141 &write_data("\r\n");
2142 &reset_byte_count();
2143 &write_data("<h1>Index of $simple</h1>\n");
2144 &write_data("<pre>\n");
2145 &write_data(sprintf "%-35.35s %-20.20s %-10.10s\n",
2146 "Name", "Last Modified", "Size");
2147 &write_data("<hr>\n");
2148 opendir(DIR, $full);
2149 while($df = readdir(DIR)) {
2150 if ($df =~ /^\./) { next; }
2151 $fulldf = $full eq "/" ? $full.$df : $full."/".$df;
2152 (@stbuf = stat($fulldf)) || next;
2153 if (-d _) { $df .= "/"; }
2154 @tm = localtime($stbuf[9]);
2155 $fdate = sprintf "%2.2d/%2.2d/%4.4d %2.2d:%2.2d:%2.2d",
2156 $tm[3],$tm[4]+1,$tm[5]+1900,
2157 $tm[0],$tm[1],$tm[2];
2158 $len = length($df); $rest = " "x(35-$len);
2160 "<a href=\"%s\">%-${len}.${len}s</a>$rest %-20.20s %-10.10s\n",
2161 $df, $df, $fdate, $stbuf[7]);
2164 &log_request($acpthost, $authuser, $reqline, $ok_code, &byte_count());
2168 # CGI or normal file
2170 if (&get_type($full) eq "internal/cgi" && $validated != 4) {
2171 # A CGI program to execute
2172 print DEBUG "handle_request: executing CGI\n";
2173 $envtz = $ENV{"TZ"};
2174 $envuser = $ENV{"USER"};
2175 $envpath = $ENV{"PATH"};
2176 $envlang = $ENV{"LANG"};
2177 $envroot = $ENV{"SystemRoot"};
2178 $envperllib = $ENV{'PERLLIB'};
2179 foreach my $k (keys %ENV) {
2182 $ENV{"PATH"} = $envpath if ($envpath);
2183 $ENV{"TZ"} = $envtz if ($envtz);
2184 $ENV{"USER"} = $envuser if ($envuser);
2185 $ENV{"OLD_LANG"} = $envlang if ($envlang);
2186 $ENV{"SystemRoot"} = $envroot if ($envroot);
2187 $ENV{'PERLLIB'} = $envperllib if ($envperllib);
2188 $ENV{"HOME"} = $user_homedir;
2189 $ENV{"SERVER_SOFTWARE"} = $config{"server"};
2190 $ENV{"SERVER_NAME"} = $host;
2191 $ENV{"SERVER_ADMIN"} = $config{"email"};
2192 $ENV{"SERVER_ROOT"} = $roots[0];
2193 $ENV{"SERVER_REALROOT"} = $realroot;
2194 $ENV{"SERVER_PORT"} = $port;
2195 $ENV{"REMOTE_HOST"} = $acpthost;
2196 $ENV{"REMOTE_ADDR"} = $acptip;
2197 $ENV{"REMOTE_ADDR_PROTOCOL"} = $ipv6 ? 6 : 4;
2198 $ENV{"REMOTE_USER"} = $authuser;
2199 $ENV{"BASE_REMOTE_USER"} = $authuser ne $baseauthuser ?
2200 $baseauthuser : undef;
2201 $ENV{"REMOTE_PASS"} = $authpass if (defined($authpass) &&
2202 $config{'pass_password'});
2203 if ($uinfo && $uinfo->{'proto'}) {
2204 $ENV{"REMOTE_USER_PROTO"} = $uinfo->{'proto'};
2205 $ENV{"REMOTE_USER_ID"} = $uinfo->{'id'};
2207 print DEBUG "REMOTE_USER = ",$ENV{"REMOTE_USER"},"\n";
2208 print DEBUG "BASE_REMOTE_USER = ",$ENV{"BASE_REMOTE_USER"},"\n";
2209 print DEBUG "proto=$uinfo->{'proto'} id=$uinfo->{'id'}\n" if ($uinfo);
2210 $ENV{"SSL_USER"} = $peername if ($validated == 2);
2211 $ENV{"ANONYMOUS_USER"} = "1" if ($validated == 3 || $validated == 4);
2212 $ENV{"DOCUMENT_ROOT"} = $roots[0];
2213 $ENV{"DOCUMENT_REALROOT"} = $realroot;
2214 $ENV{"GATEWAY_INTERFACE"} = "CGI/1.1";
2215 $ENV{"SERVER_PROTOCOL"} = "HTTP/1.0";
2216 $ENV{"REQUEST_METHOD"} = $method;
2217 $ENV{"SCRIPT_NAME"} = $scriptname;
2218 $ENV{"SCRIPT_FILENAME"} = $full;
2219 $ENV{"REQUEST_URI"} = $request_uri;
2220 $ENV{"PATH_INFO"} = $pathinfo;
2222 $ENV{"PATH_TRANSLATED"} = "$roots[0]$pathinfo";
2223 $ENV{"PATH_REALTRANSLATED"} = "$realroot$pathinfo";
2225 $ENV{"QUERY_STRING"} = $querystring;
2226 $ENV{"MINISERV_CONFIG"} = $config_file;
2227 $ENV{"HTTPS"} = "ON" if ($use_ssl || $config{'inetd_ssl'});
2228 $ENV{"MINISERV_PID"} = $miniserv_main_pid;
2229 $ENV{"SESSION_ID"} = $session_id if ($session_id);
2230 $ENV{"LOCAL_USER"} = $localauth_user if ($localauth_user);
2231 $ENV{"MINISERV_INTERNAL"} = $miniserv_internal if ($miniserv_internal);
2232 if (defined($header{"content-length"})) {
2233 $ENV{"CONTENT_LENGTH"} = $header{"content-length"};
2235 if (defined($header{"content-type"})) {
2236 $ENV{"CONTENT_TYPE"} = $header{"content-type"};
2238 foreach $h (keys %header) {
2239 ($hname = $h) =~ tr/a-z/A-Z/;
2241 $ENV{"HTTP_$hname"} = $header{$h};
2243 $ENV{"PWD"} = $cgi_pwd;
2244 foreach $k (keys %config) {
2245 if ($k =~ /^env_(\S+)$/) {
2246 $ENV{$1} = $config{$k};
2249 delete($ENV{'HTTP_AUTHORIZATION'});
2250 $ENV{'HTTP_COOKIE'} =~ s/;?\s*$sidname=([a-f0-9]+)//;
2251 $ENV{'MOBILE_DEVICE'} = 1 if ($mobile_device);
2253 # Check if the CGI can be handled internally
2255 local $first = <CGI>;
2257 $first =~ s/[#!\r\n]//g;
2258 $nph_script = ($full =~ /\/nph-([^\/]+)$/);
2260 if (!$config{'forkcgis'} &&
2261 ($first eq $perl_path || $first eq $linked_perl_path) &&
2263 $config{'internalcgis'}) {
2264 # setup environment for eval
2266 @ARGV = split(/\s+/, $queryargs);
2269 # Already read the post input
2270 $postinput = $posted_data;
2272 $clen = $header{"content-length"};
2273 $SIG{'CHLD'} = 'DEFAULT';
2275 # Have SOCK closed if the perl exec's something
2277 fcntl(SOCK, F_SETFD, FD_CLOEXEC);
2281 if ($config{'log'}) {
2282 open(MINISERVLOG, ">>$config{'logfile'}");
2283 if ($config{'logperms'}) {
2284 chmod(oct($config{'logperms'}),
2285 $config{'logfile'});
2288 chmod(0600, $config{'logfile'});
2291 $doing_cgi_eval = 1;
2292 $main_process_id = $$;
2294 if ($full =~ /^\Q$foundroot\E\/([^\/]+)\//) {
2295 # Eval in package from Webmin module name
2297 $pkg =~ s/[^A-Za-z0-9]/_/g;
2302 tie(*STDOUT, 'miniserv');
2303 tie(*STDIN, 'miniserv');
2304 do \$miniserv::full;
2307 $doing_cgi_eval = 0;
2310 &http_error(500, "Perl execution failed",
2311 $config{'noshowstderr'} ? undef : $@);
2313 elsif (!$doneheaders && !$nph_script) {
2314 &http_error(500, "Missing Headers");
2321 # fork the process that actually executes the CGI
2322 pipe(CGIINr, CGIINw);
2323 pipe(CGIOUTr, CGIOUTw);
2324 pipe(CGIERRr, CGIERRw);
2325 if (!($cgipid = fork())) {
2326 @execargs = ( $full, split(/\s+/, $queryargs) );
2329 open(STDIN, "<&CGIINr");
2330 open(STDOUT, ">&CGIOUTw");
2331 open(STDERR, ">&CGIERRw");
2332 close(CGIINw); close(CGIOUTr); close(CGIERRr);
2334 die "Failed to exec $full : $!\n";
2337 close(CGIINr); close(CGIOUTw); close(CGIERRw);
2340 # write CGI input to a temp file
2341 $infile = "$config{'tempbase'}.$$";
2342 open(CGIINw, ">$infile");
2343 # NOT binary mode, as CGIs don't read in it!
2348 # already read the posted data
2349 print CGIINw $posted_data;
2351 $clen = $header{"content-length"};
2352 if ($method eq "POST" && $clen_read < $clen) {
2353 $SIG{'PIPE'} = 'IGNORE';
2355 while($got < $clen) {
2356 $buf = &read_data($clen-$got);
2357 if (!length($buf)) {
2358 kill('TERM', $cgipid);
2359 unlink($infile) if ($infile);
2360 &http_error(500, "Failed to read ".
2363 $got += length($buf);
2364 local ($wrote) = (print CGIINw $buf);
2367 # If the CGI terminated early, we still need to read
2368 # from the browser and throw away
2369 while($got < $clen) {
2370 $buf = &read_data($clen-$got);
2371 if (!length($buf)) {
2372 kill('TERM', $cgipid);
2373 unlink($infile) if ($infile);
2374 &http_error(500, "Failed to read ".
2377 $got += length($buf);
2379 $SIG{'PIPE'} = 'DEFAULT';
2385 # Run the CGI program, and feed it input
2387 local $qqueryargs = join(" ", map { "\"$_\"" }
2388 split(/\s+/, $queryargs));
2389 if ($first =~ /(perl|perl.exe)$/i) {
2390 # On Windows, run with Perl
2391 open(CGIOUTr, "$perl_path \"$full\" $qqueryargs <$infile |");
2394 open(CGIOUTr, "\"$full\" $qqueryargs <$infile |");
2400 # read back cgi headers
2401 select(CGIOUTr); $|=1; select(STDOUT);
2405 $line =~ s/\r|\n//g;
2407 if ($got_blank || %cgiheader) { last; }
2411 if ($line !~ /^(\S+):\s+(.*)$/) {
2412 $errs = &read_errors(CGIERRr);
2413 close(CGIOUTr); close(CGIERRr);
2414 unlink($infile) if ($infile);
2415 &http_error(500, "Bad Header", $errs);
2417 $cgiheader{lc($1)} = $2;
2418 push(@cgiheader, [ $1, $2 ]);
2420 if ($cgiheader{"location"}) {
2421 &write_data("HTTP/1.0 302 Moved Temporarily\r\n");
2422 &write_data("Date: $datestr\r\n");
2423 &write_data("Server: $config{'server'}\r\n");
2424 &write_keep_alive(0);
2425 # ignore the rest of the output. This is a hack,
2426 # but is necessary for IE in some cases :(
2427 close(CGIOUTr); close(CGIERRr);
2429 elsif ($cgiheader{"content-type"} eq "") {
2430 close(CGIOUTr); close(CGIERRr);
2431 unlink($infile) if ($infile);
2432 $errs = &read_errors(CGIERRr);
2433 &http_error(500, "Missing Content-Type Header",
2434 $config{'noshowstderr'} ? undef : $errs);
2437 &write_data("HTTP/1.0 $ok_code $ok_message\r\n");
2438 &write_data("Date: $datestr\r\n");
2439 &write_data("Server: $config{'server'}\r\n");
2440 &write_keep_alive(0);
2442 foreach $h (@cgiheader) {
2443 &write_data("$h->[0]: $h->[1]\r\n");
2445 &write_data("\r\n");
2447 &reset_byte_count();
2448 while($line = <CGIOUTr>) {
2453 unlink($infile) if ($infile);
2459 print DEBUG "handle_request: outputting file $full\n";
2460 $gzfile = $full.".gz";
2462 if ($config{'gzip'} ne '0' && -r $gzfile && $acceptenc{'gzip'}) {
2463 # Using gzipped version
2464 @stopen = stat($gzfile);
2465 if ($stopen[9] >= $stfull[9] && open(FILE, $gzfile)) {
2466 print DEBUG "handle_request: using gzipped $gzfile\n";
2471 # Using original file
2473 open(FILE, $full) || &http_error(404, "Failed to open file");
2477 # Build common headers
2478 local $resp = "HTTP/1.0 $ok_code $ok_message\r\n".
2479 "Date: $datestr\r\n".
2480 "Server: $config{server}\r\n".
2481 "Content-type: ".&get_type($full)."\r\n".
2482 "Last-Modified: ".&http_date($stopen[9])."\r\n".
2484 &http_date(time()+&get_expires_time($simple))."\r\n";
2486 if (!$gzipped && $use_gzip && $acceptenc{'gzip'} &&
2487 &should_gzip_file($full)) {
2488 # Load and compress file, then output
2489 print DEBUG "handle_request: outputting gzipped file $full\n";
2490 open(FILE, $full) || &http_error(404, "Failed to open file");
2496 @stopen = stat($file);
2497 $data = Compress::Zlib::memGzip($data);
2498 $resp .= "Content-length: ".length($data)."\r\n".
2499 "Content-Encoding: gzip\r\n";
2501 $rv = &write_keep_alive();
2502 &write_data("\r\n");
2503 &reset_byte_count();
2507 # Stream file output
2508 $resp .= "Content-length: $stopen[7]\r\n";
2509 $resp .= "Content-Encoding: gzip\r\n" if ($gzipped);
2511 $rv = &write_keep_alive();
2512 &write_data("\r\n");
2513 &reset_byte_count();
2514 my $bufsize = $config{'bufsize'} || 1024;
2515 while(read(FILE, $buf, $bufsize) > 0) {
2523 &log_request($acpthost, $authuser, $reqline,
2524 $logged_code ? $logged_code :
2525 $cgiheader{"location"} ? "302" : $ok_code, &byte_count());
2529 # http_error(code, message, body, [dontexit])
2532 local $eh = $error_handler_recurse ? undef :
2533 $config{"error_handler_$_[0]"} ? $config{"error_handler_$_[0]"} :
2534 $config{'error_handler'} ? $config{'error_handler'} : undef;
2535 print DEBUG "http_error code=$_[0] message=$_[1] body=$_[2]\n";
2537 # Call a CGI program for the error
2539 $querystring = "code=$_[0]&message=".&urlize($_[1]).
2540 "&body=".&urlize($_[2]);
2541 $error_handler_recurse++;
2543 $ok_message = $_[1];
2547 # Use the standard error message display
2548 &write_data("HTTP/1.0 $_[0] $_[1]\r\n");
2549 &write_data("Server: $config{server}\r\n");
2550 &write_data("Date: $datestr\r\n");
2551 &write_data("Content-type: text/html\r\n");
2552 &write_keep_alive(0);
2553 &write_data("\r\n");
2554 &reset_byte_count();
2555 &write_data("<h1>Error - $_[1]</h1>\n");
2557 &write_data("<pre>$_[2]</pre>\n");
2560 &log_request($acpthost, $authuser, $reqline, $_[0], &byte_count())
2562 &log_error($_[1], $_[2] ? " : $_[2]" : "");
2569 if ($_[0] =~ /\.([A-z0-9]+)$/) {
2575 return "text/plain";
2578 # simplify_path(path, bogus)
2579 # Given a path, maybe containing stuff like ".." and "." convert it to a
2580 # clean, absolute form.
2583 local($dir, @bits, @fixedbits, $b);
2585 $dir =~ s/\\/\//g; # fix windows \ in path
2588 $dir =~ s/\0//g; # remove null bytes
2589 @bits = split(/\/+/, $dir);
2592 foreach $b (@bits) {
2596 elsif ($b eq ".." || $b eq "...") {
2598 if (scalar(@fixedbits) == 0) {
2606 push(@fixedbits, $b);
2609 return "/" . join('/', @fixedbits);
2613 # Converts a string from base64 format to normal
2616 local($str) = $_[0];
2618 $str =~ tr|A-Za-z0-9+=/||cd;
2620 $str =~ tr|A-Za-z0-9+/| -_|;
2621 while ($str =~ /(.{1,60})/gs) {
2622 my $len = chr(32 + length($1)*3/4);
2623 $res .= unpack("u", $len . $1 );
2628 # ip_match(remoteip, localip, [match]+)
2629 # Checks an IP address against a list of IPs, networks and networks/masks
2632 local(@io, @mo, @ms, $i, $j, $hn, $needhn);
2633 @io = &check_ip6address($_[0]) ? split(/:/, $_[0])
2634 : split(/\./, $_[0]);
2635 for($i=2; $i<@_; $i++) {
2636 $needhn++ if ($_[$i] =~ /^\*(\S+)$/);
2638 if ($needhn && !defined($hn = $ip_match_cache{$_[0]})) {
2639 # Reverse-lookup hostname if any rules match based on it
2640 $hn = &to_hostname($_[0]);
2641 if (&check_ip6address($_[0])) {
2642 $hn = "" if (&to_ip6address($hn) ne $_[0]);
2645 $hn = "" if (&to_ipaddress($hn) ne $_[0]);
2647 $ip_match_cache{$_[0]} = $hn;
2649 for($i=2; $i<@_; $i++) {
2650 local $mismatch = 0;
2651 if ($_[$i] =~ /^(\S+)\/(\d+)$/) {
2652 # Convert CIDR to netmask format
2653 $_[$i] = $1."/".&prefix_to_mask($2);
2655 if ($_[$i] =~ /^(\S+)\/(\S+)$/) {
2656 # Compare with IPv4 network/mask
2657 @mo = split(/\./, $1); @ms = split(/\./, $2);
2658 for($j=0; $j<4; $j++) {
2659 if ((int($io[$j]) & int($ms[$j])) != int($mo[$j])) {
2664 elsif ($_[$i] =~ /^\*(\S+)$/) {
2665 # Compare with hostname regexp
2666 $mismatch = 1 if ($hn !~ /$1$/);
2668 elsif ($_[$i] eq 'LOCAL' && &check_ipaddress($_[1])) {
2669 # Compare with local IPv4 network
2670 local @lo = split(/\./, $_[1]);
2672 $mismatch = 1 if ($lo[0] != $io[0]);
2674 elsif ($lo[0] < 192) {
2675 $mismatch = 1 if ($lo[0] != $io[0] ||
2679 $mismatch = 1 if ($lo[0] != $io[0] ||
2684 elsif ($_[$i] eq 'LOCAL' && &check_ip6address($_[1])) {
2685 # Compare with local IPv6 network, which is always first 4 words
2686 local @lo = split(/:/, $_[1]);
2687 for(my $i=0; $i<4; $i++) {
2688 $mismatch = 1 if ($lo[$i] ne $io[$i]);
2691 elsif ($_[$i] =~ /^[0-9\.]+$/) {
2692 # Compare with IPv4 address or network
2693 @mo = split(/\./, $_[$i]);
2694 while(@mo && !$mo[$#mo]) { pop(@mo); }
2695 for($j=0; $j<@mo; $j++) {
2696 if ($mo[$j] != $io[$j]) {
2701 elsif ($_[$i] =~ /^[a-f0-9:]+$/) {
2702 # Compare with IPv6 address or network
2703 @mo = split(/:/, $_[$i]);
2704 while(@mo && !$mo[$#mo]) { pop(@mo); }
2705 for($j=0; $j<@mo; $j++) {
2706 if ($mo[$j] ne $io[$j]) {
2711 elsif ($_[$i] !~ /^[0-9\.]+$/) {
2712 # Compare with hostname
2713 $mismatch = 1 if ($_[0] ne &to_ipaddress($_[$i]));
2715 return 1 if (!$mismatch);
2720 # users_match(&uinfo, user, ...)
2721 # Returns 1 if a user is in a list of users and groups
2724 local $uinfo = shift(@_);
2726 local @ginfo = getgrgid($uinfo->[3]);
2728 if ($u =~ /^\@(\S+)$/) {
2729 return 1 if (&is_group_member($uinfo, $1));
2731 elsif ($u =~ /^(\d*)-(\d*)$/ && ($1 || $2)) {
2732 return (!$1 || $uinfo[2] >= $1) &&
2733 (!$2 || $uinfo[2] <= $2);
2736 return 1 if ($u eq $uinfo->[0]);
2742 # restart_miniserv()
2743 # Called when a SIGHUP is received to restart the web server. This is done
2744 # by exec()ing perl with the same command line as was originally used
2745 sub restart_miniserv
2747 print STDERR "restarting miniserv\n";
2748 &log_error("Restarting");
2750 &close_all_sockets();
2752 dbmclose(%sessiondb);
2753 kill('KILL', $logclearer) if ($logclearer);
2754 kill('KILL', $extauth) if ($extauth);
2755 exec($perl_path, $miniserv_path, @miniserv_argv);
2756 die "Failed to restart miniserv with $perl_path $miniserv_path";
2769 # to_ipaddress(address, ...)
2774 if ($i =~ /(\S+)\/(\S+)/ || $i =~ /^\*\S+$/ ||
2775 $i eq 'LOCAL' || $i =~ /^[0-9\.]+$/ || $i =~ /^[a-f0-9:]+$/) {
2776 # A pattern or IP, not a hostname, so don't change
2781 push(@rv, join('.', unpack("CCCC", inet_aton($i))));
2784 return wantarray ? @rv : $rv[0];
2787 # to_ip6address(address, ...)
2792 if ($i =~ /(\S+)\/(\S+)/ || $i =~ /^\*\S+$/ ||
2793 $i eq 'LOCAL' || $i =~ /^[0-9\.]+$/ || $i =~ /^[a-f0-9:]+$/) {
2794 # A pattern, not a hostname, so don't change
2798 # Lookup IPv6 address
2799 local ($inaddr, $addr);
2800 (undef, undef, undef, $inaddr) =
2801 getaddrinfo($i, undef, Socket6::AF_INET6(), SOCK_STREAM);
2806 (undef, $addr) = unpack_sockaddr_in6($inaddr);
2807 push(@rv, inet_ntop(Socket6::AF_INET6(), $addr));
2811 return wantarray ? @rv : $rv[0];
2814 # to_hostname(ipv4|ipv6-address)
2815 # Reverse-resolves an IPv4 or 6 address to a hostname
2819 if (&check_ip6address($_[0])) {
2820 return gethostbyaddr(inet_pton(Socket6::AF_INET6(), $addr),
2821 Socket6::AF_INET6());
2824 return gethostbyaddr(inet_aton($addr), AF_INET);
2828 # read_line(no-wait, no-limit)
2829 # Reads one line from SOCK or SSL
2832 local ($nowait, $nolimit) = @_;
2833 local($idx, $more, $rv);
2834 while(($idx = index($main::read_buffer, "\n")) < 0) {
2835 if (length($main::read_buffer) > 10000 && !$nolimit) {
2836 &http_error(414, "Request too long",
2837 "Received excessive line <pre>$main::read_buffer</pre>");
2840 # need to read more..
2841 &wait_for_data_error() if (!$nowait);
2843 $more = Net::SSLeay::read($ssl_con);
2846 my $bufsize = $config{'bufsize'} || 1024;
2847 local $ok = sysread(SOCK, $more, $bufsize);
2848 $more = undef if ($ok <= 0);
2852 $rv = $main::read_buffer;
2853 undef($main::read_buffer);
2856 $main::read_buffer .= $more;
2858 $rv = substr($main::read_buffer, 0, $idx+1);
2859 $main::read_buffer = substr($main::read_buffer, $idx+1);
2864 # Reads up to some amount of data from SOCK or the SSL connection
2868 if (length($main::read_buffer)) {
2869 if (length($main::read_buffer) > $_[0]) {
2870 # Return the first part of the buffer
2871 $rv = substr($main::read_buffer, 0, $_[0]);
2872 $main::read_buffer = substr($main::read_buffer, $_[0]);
2876 # Return the whole buffer
2877 $rv = $main::read_buffer;
2878 undef($main::read_buffer);
2883 # Call SSL read function
2884 return Net::SSLeay::read($ssl_con, $_[0]);
2887 # Just do a normal read
2889 sysread(SOCK, $buf, $_[0]) || return undef;
2895 # Read a line from a file handle, using sysread to get a byte at a time
2902 $got = sysread($fh, $buf, 1);
2903 last if ($got <= 0);
2905 last if ($buf eq "\n");
2910 # wait_for_data(secs)
2911 # Waits at most the given amount of time for some data on SOCK, returning
2912 # 0 if not found, 1 if some arrived.
2916 vec($rmask, fileno(SOCK), 1) = 1;
2917 local $got = select($rmask, undef, undef, $_[0]);
2918 return $got == 0 ? 0 : 1;
2921 # wait_for_data_error()
2922 # Waits 60 seconds for data on SOCK, and fails if none arrives
2923 sub wait_for_data_error
2925 local $got = &wait_for_data(60);
2927 &http_error(400, "Timeout",
2928 "Waited more than 60 seconds for request data");
2932 # write_data(data, ...)
2933 # Writes a string to SOCK or the SSL connection
2936 local $str = join("", @_);
2938 Net::SSLeay::write($ssl_con, $str);
2941 syswrite(SOCK, $str, length($str));
2943 # Intentionally introduce a small delay to avoid problems where IE reports
2944 # the page as empty / DNS failed when it get a large response too quickly!
2945 select(undef, undef, undef, .01) if ($write_data_count%10 == 0);
2946 $write_data_count += length($str);
2949 # reset_byte_count()
2950 sub reset_byte_count { $write_data_count = 0; }
2953 sub byte_count { return $write_data_count; }
2955 # log_request(hostname, user, request, code, bytes)
2958 if ($config{'log'}) {
2959 local ($user, $ident, $headers);
2960 if ($config{'logident'}) {
2961 # add support for rfc1413 identity checking here
2963 else { $ident = "-"; }
2964 $user = $_[1] ? $_[1] : "-";
2965 local $dstr = &make_datestr();
2966 if (fileno(MINISERVLOG)) {
2967 seek(MINISERVLOG, 0, 2);
2970 open(MINISERVLOG, ">>$config{'logfile'}");
2971 chmod(0600, $config{'logfile'});
2973 if (defined($config{'logheaders'})) {
2974 foreach $h (split(/\s+/, $config{'logheaders'})) {
2975 $headers .= " $h=\"$header{$h}\"";
2978 elsif ($config{'logclf'}) {
2979 $headers = " \"$header{'referer'}\" \"$header{'user-agent'}\"";
2984 print MINISERVLOG "$_[0] $ident $user [$dstr] \"$_[2]\" ",
2985 "$_[3] $_[4]$headers\n";
2993 local @tm = localtime(time());
2994 return sprintf "%2.2d/%s/%4.4d:%2.2d:%2.2d:%2.2d %s",
2995 $tm[3], $month[$tm[4]], $tm[5]+1900,
2996 $tm[2], $tm[1], $tm[0], $timezone;
2999 # log_error(message)
3003 print STDERR "[",&make_datestr(),"] ",
3004 $acpthost ? ( "[",$acpthost,"] " ) : ( ),
3005 $page ? ( $page," : " ) : ( ),
3009 # read_errors(handle)
3010 # Read and return all input from some filehandle
3013 local($fh, $_, $rv);
3015 while(<$fh>) { $rv .= $_; }
3019 sub write_keep_alive
3022 if ($config{'nokeepalive'}) {
3023 # Keep alives have been disabled in config
3026 elsif (@childpids > $config{'maxconns'}*.8) {
3027 # Disable because nearing process limit
3031 # Keep alive specified by caller
3035 # Keep alive determined by browser
3036 $mode = $header{'connection'} =~ /keep-alive/i;
3038 &write_data("Connection: ".($mode ? "Keep-Alive" : "close")."\r\n");
3044 kill('TERM', @childpids) if (@childpids);
3045 kill('KILL', $logclearer) if ($logclearer);
3046 kill('KILL', $extauth) if ($extauth);
3052 local @tm = gmtime($_[0]);
3053 return sprintf "%s, %d %s %d %2.2d:%2.2d:%2.2d GMT",
3054 $weekday[$tm[6]], $tm[3], $month[$tm[4]], $tm[5]+1900,
3055 $tm[2], $tm[1], $tm[0];
3060 my $i; bless \$i, shift;
3066 my($buf,$len,$offset) = @_;
3067 &write_to_sock(substr($buf, $offset, $len));
3068 $miniserv::page_capture_out .= substr($buf, $offset, $len)
3069 if ($miniserv::page_capture);
3076 my $buf = join(defined($,) ? $, : "", @_);
3077 $buf .= $\ if defined($\);
3078 &write_to_sock($buf);
3079 $miniserv::page_capture_out .= $buf
3080 if ($miniserv::page_capture);
3087 my $buf = sprintf $fmt, @_;
3088 &write_to_sock($buf);
3089 $miniserv::page_capture_out .= $buf
3090 if ($miniserv::page_capture);
3093 # Send back already read data while we have it, then read from SOCK
3097 my $bufref = \$_[0];
3100 if ($postpos < length($postinput)) {
3101 # Reading from already fetched array
3102 my $left = length($postinput) - $postpos;
3103 my $canread = $len > $left ? $left : $len;
3104 substr($$bufref, $offset, $canread) =
3105 substr($postinput, $postpos, $canread);
3106 $postpos += $canread;
3110 # Read from network socket
3111 local $data = &read_data($len);
3112 if ($data eq '' && $len) {
3114 print STDERR "finished reading - shutting down socket\n";
3117 substr($$bufref, $offset, length($data)) = $data;
3118 return length($data);
3124 #print STDERR "open() called - should never happen!\n";
3127 # Read a line of input
3131 if ($postpos < length($postinput) &&
3132 ($idx = index($postinput, "\n", $postpos)) >= 0) {
3133 # A line exists in the memory buffer .. use it
3134 my $line = substr($postinput, $postpos, $idx-$postpos+1);
3139 # Need to read from the socket
3141 if ($postpos < length($postinput)) {
3142 # Start with in-memory data
3143 $line = substr($postinput, $postpos);
3144 $postpos = length($postinput);
3146 my $nl = &read_line(0, 1);
3149 print STDERR "finished reading - shutting down socket\n";
3152 $line .= $nl if (defined($nl));
3157 # Read one character of input
3162 my $got = READ($r, \$buf, 1, 0);
3163 return $got > 0 ? $buf : undef;
3168 return fileno(SOCK);
3175 # write_to_sock(data, ...)
3180 if ($doneheaders || $miniserv::nph_script) {
3185 while(!$doneheaders && $headers =~ s/^([^\r\n]*)(\r)?\n//) {
3186 if ($1 =~ /^(\S+):\s+(.*)$/) {
3187 $cgiheader{lc($1)} = $2;
3188 push(@cgiheader, [ $1, $2 ]);
3190 elsif ($1 !~ /\S/) {
3194 &http_error(500, "Bad Header");
3198 if ($cgiheader{"location"}) {
3200 "HTTP/1.0 302 Moved Temporarily\r\n");
3201 &write_data("Date: $datestr\r\n");
3202 &write_data("Server: $config{server}\r\n");
3203 &write_keep_alive(0);
3205 elsif ($cgiheader{"content-type"} eq "") {
3206 &http_error(500, "Missing Content-Type Header");
3209 &write_data("HTTP/1.0 $ok_code $ok_message\r\n");
3210 &write_data("Date: $datestr\r\n");
3211 &write_data("Server: $config{server}\r\n");
3212 &write_keep_alive(0);
3214 foreach $h (@cgiheader) {
3215 &write_data("$h->[0]: $h->[1]\r\n");
3217 &write_data("\r\n");
3218 &reset_byte_count();
3219 &write_data($headers);
3227 local $cert = Net::SSLeay::X509_STORE_CTX_get_current_cert($_[1]);
3229 local $errnum = Net::SSLeay::X509_STORE_CTX_get_error($_[1]);
3230 $verified_client = 1 if (!$errnum);
3237 if ($doing_cgi_eval && $$ == $main_process_id) {
3238 # A CGI program called exit! This is a horrible hack to
3239 # finish up before really exiting
3242 close($PASSINw); close($PASSOUTw);
3243 &log_request($acpthost, $authuser, $reqline,
3244 $cgiheader{"location"} ? "302" : $ok_code, &byte_count());
3249 # Convert a string to a form ok for putting in a URL
3251 local($tmp, $tmp2, $c);
3254 while(($c = chop($tmp)) ne "") {
3255 if ($c !~ /[A-z0-9]/) {
3256 $c = sprintf("%%%2.2X", ord($c));
3263 # validate_user(username, password, host, remote-ip, webmin-port)
3264 # Checks if some username and password are valid. Returns the modified username,
3265 # the expired / temp pass flag, and the non-existence flag
3268 local ($user, $pass, $host, $actpip, $port) = @_;
3269 return ( ) if (!$user);
3270 print DEBUG "validate_user: user=$user pass=$pass host=$host\n";
3271 local ($canuser, $canmode, $notexist, $webminuser, $sudo) =
3272 &can_user_login($user, undef, $host);
3273 print DEBUG "validate_user: canuser=$canuser canmode=$canmode notexist=$notexist webminuser=$webminuser sudo=$sudo\n";
3275 # User doesn't even exist, so go no further
3276 return ( undef, 0, 1 );
3278 elsif ($canmode == 0) {
3279 # User does exist but cannot login
3280 return ( $canuser, 0, 0 );
3282 elsif ($canmode == 1) {
3283 # Attempt Webmin authentication
3284 my $uinfo = &get_user_details($webminuser);
3286 &password_crypt($pass, $uinfo->{'pass'}) eq $uinfo->{'pass'}) {
3287 # Password is valid .. but check for expiry
3288 local $lc = $uinfo->{'lastchanges'};
3289 print DEBUG "validate_user: Password is valid lc=$lc pass_maxdays=$config{'pass_maxdays'}\n";
3290 if ($config{'pass_maxdays'} && $lc && !$uinfo->{'nochange'}) {
3291 local $daysold = (time() - $lc)/(24*60*60);
3292 print DEBUG "maxdays=$config{'pass_maxdays'} daysold=$daysold temppass=$uinfo->{'temppass'}\n";
3293 if ($config{'pass_lockdays'} &&
3294 $daysold > $config{'pass_lockdays'}) {
3295 # So old that the account is locked
3296 return ( undef, 0, 0 );
3298 elsif ($daysold > $config{'pass_maxdays'}) {
3299 # Password has expired
3300 return ( $user, 1, 0 );
3303 if ($uinfo->{'temppass'}) {
3304 # Temporary password - force change now
3305 return ( $user, 2, 0 );
3307 return ( $user, 0, 0 );
3310 print DEBUG "validate_user: User $webminuser not found\n";
3311 return ( undef, 0, 0 );
3314 print DEBUG "validate_user: User $webminuser password mismatch $pass != $uinfo->{'pass'}\n";
3315 return ( undef, 0, 0 );
3318 elsif ($canmode == 2 || $canmode == 3) {
3319 # Attempt PAM or passwd file authentication
3320 local $val = &validate_unix_user($canuser, $pass, $acptip, $port);
3321 print DEBUG "validate_user: unix val=$val\n";
3322 if ($val && $sudo) {
3323 # Need to check if this Unix user can sudo
3324 if (!&check_sudo_permissions($canuser, $pass)) {
3325 print DEBUG "validate_user: sudo failed\n";
3329 print DEBUG "validate_user: sudo passed\n";
3332 return $val == 2 ? ( $canuser, 1, 0 ) :
3333 $val == 1 ? ( $canuser, 0, 0 ) : ( undef, 0, 0 );
3335 elsif ($canmode == 4) {
3336 # Attempt external authentication
3337 return &validate_external_user($canuser, $pass) ?
3338 ( $canuser, 0, 0 ) : ( undef, 0, 0 );
3346 # validate_unix_user(user, password, remote-ip, local-port)
3347 # Returns 1 if a username and password are valid under unix, 0 if not,
3348 # or 2 if the account has expired.
3349 # Checks PAM if available, and falls back to reading the system password
3351 sub validate_unix_user
3355 $pam_username = $_[0];
3356 $pam_password = $_[1];
3357 eval "use Authen::PAM;";
3358 local $pamh = new Authen::PAM($config{'pam'}, $pam_username,
3361 $pamh->pam_set_item("PAM_RHOST", $_[2]) if ($_[2]);
3362 $pamh->pam_set_item("PAM_TTY", $_[3]) if ($_[3]);
3363 local $pam_ret = $pamh->pam_authenticate();
3364 if ($pam_ret == PAM_SUCCESS()) {
3365 # Logged in OK .. make sure password hasn't expired
3366 local $acct_ret = $pamh->pam_acct_mgmt();
3367 if ($acct_ret == PAM_SUCCESS()) {
3368 $pamh->pam_open_session();
3371 elsif ($acct_ret == PAM_NEW_AUTHTOK_REQD() ||
3372 $acct_ret == PAM_ACCT_EXPIRED()) {
3376 print STDERR "Unknown pam_acct_mgmt return value : $acct_ret\n";
3383 elsif ($config{'pam_only'}) {
3384 # Pam is not available, but configuration forces it's use!
3387 elsif ($config{'passwd_file'}) {
3388 # Check in a password file
3390 open(FILE, $config{'passwd_file'});
3391 if ($config{'passwd_file'} eq '/etc/security/passwd') {
3392 # Assume in AIX format
3395 if (/^\s*(\S+):/ && $1 eq $_[0]) {
3397 if (/^\s*password\s*=\s*(\S+)\s*$/) {
3398 $rv = $1 eq &password_crypt($_[1], $1) ?
3406 # Read the system password or shadow file
3408 local @l = split(/:/, $_, -1);
3409 local $u = $l[$config{'passwd_uindex'}];
3410 local $p = $l[$config{'passwd_pindex'}];
3412 $rv = $p eq &password_crypt($_[1], $p) ? 1 : 0;
3413 if ($config{'passwd_cindex'} ne '' && $rv) {
3414 # Password may have expired!
3415 local $c = $l[$config{'passwd_cindex'}];
3416 local $m = $l[$config{'passwd_mindex'}];
3417 local $day = time()/(24*60*60);
3418 if ($c =~ /^\d+/ && $m =~ /^\d+/ &&
3424 if ($p eq "" && $config{'passwd_blank'}) {
3425 # Force password change
3433 return $rv if ($rv);
3436 # Fallback option - check password returned by getpw*
3437 local @uinfo = getpwnam($_[0]);
3438 if ($uinfo[1] ne '' && &password_crypt($_[1], $uinfo[1]) eq $uinfo[1]) {
3442 return 0; # Totally failed
3445 # validate_external_user(user, pass)
3446 # Validate a user by passing the username and password to an external
3447 # squid-style authentication program
3448 sub validate_external_user
3450 return 0 if (!$config{'extauth'});
3452 local $str = "$_[0] $_[1]\n";
3453 syswrite(EXTAUTH, $str, length($str));
3454 local $resp = <EXTAUTH>;
3456 return $resp =~ /^OK/i ? 1 : 0;
3459 # can_user_login(username, no-append, host)
3460 # Checks if a user can login or not.
3461 # First return value is the username.
3462 # Second is 0 if cannot login, 1 if using Webmin pass, 2 if PAM, 3 if password
3463 # file, 4 if external.
3464 # Third is 1 if the user does not exist at all, 0 if he does.
3465 # Fourth is the Webmin username whose permissions apply, based on unixauth.
3466 # Fifth is a flag indicating if a sudo check is needed.
3469 local $uinfo = &get_user_details($_[0]);
3471 # See if this user exists in Unix and can be validated by the same
3472 # method as the unixauth webmin user
3473 local $realuser = $unixauth{$_[0]};
3477 eval { @uinfo = getpwnam($_[0]); }; # may fail on windows
3478 if (!$realuser && @uinfo) {
3479 # No unixauth entry for the username .. try his groups
3480 foreach my $ua (keys %unixauth) {
3481 if ($ua =~ /^\@(.*)$/) {
3482 if (&is_group_member(\@uinfo, $1)) {
3483 $realuser = $unixauth{$ua};
3489 if (!$realuser && @uinfo) {
3490 # Fall back to unix auth for all Unix users
3491 $realuser = $unixauth{"*"};
3493 if (!$realuser && $use_sudo && @uinfo) {
3494 # Allow login effectively as root, if sudo permits it
3498 if (!$realuser && !@uinfo && $config{'pamany'}) {
3499 # If the user completely doesn't exist, we can still allow
3500 # him to authenticate via PAM
3501 $realuser = $config{'pamany'};
3505 # For Usermin, always fall back to unix auth for any user,
3506 # so that later checks with domain added / removed are done.
3507 $realuser = $unixauth{"*"};
3509 return (undef, 0, 1, undef) if (!$realuser);
3510 local $uinfo = &get_user_details($realuser);
3511 return (undef, 0, 1, undef) if (!$uinfo);
3512 local $up = $uinfo->{'pass'};
3514 # Work out possible domain names from the hostname
3515 local @doms = ( $_[2] );
3516 if ($_[2] =~ /^([^\.]+)\.(\S+)$/) {
3520 if ($config{'user_mapping'} && !%user_mapping) {
3521 # Read the user mapping file
3523 open(MAPPING, $config{'user_mapping'});
3527 if (/^(\S+)\s+(\S+)/) {
3528 if ($config{'user_mapping_reverse'}) {
3529 $user_mapping{$1} = $2;
3532 $user_mapping{$2} = $1;
3539 # Check the user mapping file to see if there is an entry for the
3540 # user login in which specifies a new effective user
3542 foreach my $d (@doms) {
3543 $um ||= $user_mapping{"$_[0]\@$d"};
3545 $um ||= $user_mapping{$_[0]};
3546 if (defined($um) && ($_[1]&4) == 0) {
3547 # A mapping exists - use it!
3548 return &can_user_login($um, $_[1]+4, $_[2]);
3551 # Check if a user with the entered login and the domains appended
3552 # or prepended exists, and if so take it to be the effective user
3553 if (!@uinfo && $config{'domainuser'}) {
3554 # Try again with name.domain and name.firstpart
3555 local @firsts = map { /^([^\.]+)/; $1 } @doms;
3556 if (($_[1]&1) == 0) {
3558 foreach $a (@firsts, @doms) {
3559 foreach $p ("$_[0].${a}", "$_[0]-${a}",
3560 "${a}.$_[0]", "${a}-$_[0]",
3561 "$_[0]_${a}", "${a}_$_[0]") {
3562 local @vu = &can_user_login(
3563 $p, $_[1]+1, $_[2]);
3564 return @vu if ($vu[1]);
3570 # Check if the user entered a domain at the end of his username when
3571 # he really shouldn't have, and if so try without it
3572 if (!@uinfo && $config{'domainstrip'} &&
3573 $_[0] =~ /^(\S+)\@(\S+)$/ && ($_[1]&2) == 0) {
3574 local ($stripped, $dom) = ($1, $2);
3575 local @vu = &can_user_login($stripped, $_[1] + 2, $_[2]);
3576 return @vu if ($vu[1]);
3577 local @vu = &can_user_login($stripped, $_[1] + 2, $dom);
3578 return @vu if ($vu[1]);
3581 return ( undef, 0, 1, undef ) if (!@uinfo && !$pamany);
3584 if (scalar(@allowusers)) {
3585 # Only allow people on the allow list
3586 return ( undef, 0, 0, undef )
3587 if (!&users_match(\@uinfo, @allowusers));
3589 elsif (scalar(@denyusers)) {
3590 # Disallow people on the deny list
3591 return ( undef, 0, 0, undef )
3592 if (&users_match(\@uinfo, @denyusers));
3594 if ($config{'shells_deny'}) {
3596 open(SHELLS, $config{'shells_deny'});
3600 $found++ if ($_ eq $uinfo[8]);
3603 return ( undef, 0, 0, undef ) if (!$found);
3608 # PAM or passwd file authentication
3609 print DEBUG "can_user_login: Validate with PAM\n";
3610 return ( $_[0], $use_pam ? 2 : 3, 0, $realuser, $sudo );
3612 elsif ($up eq 'e') {
3613 # External authentication
3614 print DEBUG "can_user_login: Validate externally\n";
3615 return ( $_[0], 4, 0, $realuser, $sudo );
3618 # Fixed Webmin password
3619 print DEBUG "can_user_login: Validate by Webmin\n";
3620 return ( $_[0], 1, 0, $realuser, $sudo );
3623 elsif ($uinfo->{'pass'} eq 'x') {
3624 # Webmin user authenticated via PAM or password file
3625 return ( $_[0], $use_pam ? 2 : 3, 0, $_[0] );
3627 elsif ($uinfo->{'pass'} eq 'e') {
3628 # Webmin user authenticated externally
3629 return ( $_[0], 4, 0, $_[0] );
3632 # Normal Webmin user
3633 return ( $_[0], 1, 0, $_[0] );
3637 # the PAM conversation function for interactive logins
3640 $pam_conv_func_called++;
3647 $ans = $pam_username if ($code == PAM_PROMPT_ECHO_ON() );
3648 $ans = $pam_password if ($code == PAM_PROMPT_ECHO_OFF() );
3650 push @res, PAM_SUCCESS();
3653 push @res, PAM_SUCCESS();
3662 # get_socket_ip(handle, ipv6-flag)
3663 # Returns the local IP address of some connection, as both a string and in
3667 local ($fh, $ipv6) = @_;
3668 local $sn = getsockname($fh);
3669 return undef if (!$sn);
3670 return &get_address_ip($sn, $ipv6);
3673 # get_address_ip(address, ipv6-flag)
3674 # Given a sockaddr object in binary format, return the binary address, text
3675 # address and port number
3678 local ($sn, $ipv6) = @_;
3680 local ($p, $b) = unpack_sockaddr_in6($sn);
3681 return ($b, inet_ntop(Socket6::AF_INET6(), $b), $p);
3684 local ($p, $b) = unpack_sockaddr_in($sn);
3685 return ($b, inet_ntoa($b), $p);
3689 # get_socket_name(handle, ipv6-flag)
3690 # Returns the local hostname or IP address of some connection
3693 local ($fh, $ipv6) = @_;
3694 return $config{'host'} if ($config{'host'});
3695 local ($mybin, $myaddr) = &get_socket_ip($fh, $ipv6);
3696 if (!$get_socket_name_cache{$myaddr}) {
3698 if (!$config{'no_resolv_myname'}) {
3699 $myname = gethostbyaddr($mybin,
3700 $ipv6 ? Socket6::AF_INET6() : AF_INET);
3702 $myname ||= $myaddr;
3703 $get_socket_name_cache{$myaddr} = $myname;
3705 return $get_socket_name_cache{$myaddr};
3708 # run_login_script(username, sid, remoteip, localip)
3709 sub run_login_script
3711 if ($config{'login_script'}) {
3712 system($config{'login_script'}.
3713 " ".join(" ", map { quotemeta($_) || '""' } @_).
3714 " >/dev/null 2>&1 </dev/null");
3718 # run_logout_script(username, sid, remoteip, localip)
3719 sub run_logout_script
3721 if ($config{'logout_script'}) {
3722 system($config{'logout_script'}.
3723 " ".join(" ", map { quotemeta($_) || '""' } @_).
3724 " >/dev/null 2>&1 </dev/null");
3728 # close_all_sockets()
3729 # Closes all the main listening sockets
3730 sub close_all_sockets
3733 foreach $s (@socketfhs) {
3739 # Close all pipes for talking to sub-processes
3743 foreach $p (@passin) { close($p); }
3744 foreach $p (@passout) { close($p); }
3745 foreach $p (values %conversations) {
3746 if ($p->{'PAMOUTr'}) {
3747 close($p->{'PAMOUTr'});
3748 close($p->{'PAMINw'});
3753 # check_user_ip(user)
3754 # Returns 1 if some user is allowed to login from the accepting IP, 0 if not
3757 local ($username) = @_;
3758 local $uinfo = &get_user_details($username);
3759 return 1 if (!$uinfo);
3760 if ($uinfo->{'deny'} &&
3761 &ip_match($acptip, $localip, @{$uinfo->{'deny'}}) ||
3762 $uinfo->{'allow'} &&
3763 !&ip_match($acptip, $localip, @{$uinfo->{'allow'}})) {
3769 # check_user_time(user)
3770 # Returns 1 if some user is allowed to login at the current date and time
3773 local ($username) = @_;
3774 local $uinfo = &get_user_details($username);
3775 return 1 if (!$uinfo || !$uinfo->{'allowdays'} && !$uinfo->{'allowhours'});
3776 local @tm = localtime(time());
3777 if ($uinfo->{'allowdays'}) {
3778 # Make sure day is allowed
3779 return 0 if (&indexof($tm[6], @{$uinfo->{'allowdays'}}) < 0);
3781 if ($uinfo->{'allowhours'}) {
3782 # Make sure time is allowed
3783 local $m = $tm[2]*60+$tm[1];
3784 return 0 if ($m < $uinfo->{'allowhours'}->[0] ||
3785 $m > $uinfo->{'allowhours'}->[1]);
3790 # generate_random_id(password, [force-urandom])
3791 # Returns a random session ID number
3792 sub generate_random_id
3794 local ($pass, $force_urandom) = @_;
3796 if (!$bad_urandom) {
3797 # First try /dev/urandom, unless we have marked it as bad
3798 $SIG{ALRM} = "miniserv::urandom_timeout";
3800 if (open(RANDOM, "/dev/urandom")) {
3802 if (read(RANDOM, $tmpsid, 16) == 16) {
3803 $sid = lc(unpack('h*',$tmpsid));
3809 if (!$sid && !$force_urandom) {
3812 foreach $c (split(//, &unix_crypt($pass, substr($$, -2)))) {
3813 $sid += ord($c) * $mul;
3820 # handle_login(username, ok, expired, not-exists, password, [no-test-cookie])
3821 # Called from handle_session to either mark a user as logged in, or not
3824 local ($vu, $ok, $expired, $nonexist, $pass, $notest) = @_;
3825 $authuser = $vu if ($ok);
3827 # check if the test cookie is set
3828 if ($header{'cookie'} !~ /testing=1/ && $vu &&
3829 !$config{'no_testing_cookie'} && !$notest) {
3830 &http_error(500, "No cookies",
3831 "Your browser does not support cookies, ".
3832 "which are required for this web server to ".
3833 "work in session authentication mode");
3836 # check with main process for delay
3837 if ($config{'passdelay'} && $vu) {
3838 print DEBUG "handle_login: requesting delay vu=$vu acptip=$acptip ok=$ok\n";
3839 print $PASSINw "delay $vu $acptip $ok\n";
3840 <$PASSOUTr> =~ /(\d+) (\d+)/;
3843 print DEBUG "handle_login: delay=$1 blocked=$2\n";
3846 if ($ok && (!$expired ||
3847 $config{'passwd_mode'} == 1)) {
3848 # Logged in OK! Tell the main process about
3850 local $sid = &generate_random_id($pass);
3851 print DEBUG "handle_login: sid=$sid\n";
3852 print $PASSINw "new $sid $authuser $acptip\n";
3854 # Run the post-login script, if any
3855 &run_login_script($authuser, $sid,
3858 # Check for a redirect URL for the user
3859 local $rurl = &login_redirect($authuser, $pass, $host);
3860 print DEBUG "handle_login: redirect URL rurl=$rurl\n";
3862 # Got one .. go to it
3863 &write_data("HTTP/1.0 302 Moved Temporarily\r\n");
3864 &write_data("Date: $datestr\r\n");
3865 &write_data("Server: $config{'server'}\r\n");
3866 &write_data("Location: $rurl\r\n");
3867 &write_keep_alive(0);
3868 &write_data("\r\n");
3869 &log_request($acpthost, $authuser, $reqline, 302, 0);
3872 # Set cookie and redirect to originally requested page
3873 &write_data("HTTP/1.0 302 Moved Temporarily\r\n");
3874 &write_data("Date: $datestr\r\n");
3875 &write_data("Server: $config{'server'}\r\n");
3876 local $ssl = $use_ssl || $config{'inetd_ssl'};
3877 $portstr = $port == 80 && !$ssl ? "" :
3878 $port == 443 && $ssl ? "" : ":$port";
3879 $prot = $ssl ? "https" : "http";
3880 local $sec = $ssl ? "; secure" : "";
3881 #$sec .= "; httpOnly";
3882 if ($in{'page'} !~ /^\/[A-Za-z0-9\/\.\-\_]+$/) {
3883 # Make redirect URL safe
3887 &write_data("Set-Cookie: $sidname=$sid; path=/; expires=\"Thu, 31-Dec-2037 00:00:00\"$sec\r\n");
3890 &write_data("Set-Cookie: $sidname=$sid; path=/$sec\r\n");
3892 &write_data("Location: $prot://$host$portstr$in{'page'}\r\n");
3893 &write_keep_alive(0);
3894 &write_data("\r\n");
3895 &log_request($acpthost, $authuser, $reqline, 302, 0);
3896 syslog("info", "%s", "Successful login as $authuser from $acpthost") if ($use_syslog);
3897 &write_login_utmp($authuser, $acpthost);
3901 elsif ($ok && $expired &&
3902 ($config{'passwd_mode'} == 2 || $expired == 2)) {
3903 # Login was ok, but password has expired or was temporary. Need
3904 # to force display of password change form.
3907 $querystring = "&user=".&urlize($vu).
3909 "&expired=".$expired;
3912 $page = $config{'password_form'};
3914 $miniserv_internal = 2;
3915 syslog("crit", "%s",
3916 "Expired login as $vu ".
3917 "from $acpthost") if ($use_syslog);
3920 # Login failed, or password has expired. The login form will be
3921 # displayed again by later code
3923 $request_uri = $in{'page'};
3924 $already_session_id = undef;
3926 $authuser = $baseauthuser = undef;
3927 syslog("crit", "%s",
3928 ($nonexist ? "Non-existent" :
3929 $expired ? "Expired" : "Invalid").
3930 " login as $vu from $acpthost")
3936 # write_login_utmp(user, host)
3937 # Record the login by some user in utmp
3938 sub write_login_utmp
3941 # Write utmp record for login
3942 %utmp = ( 'ut_host' => $_[1],
3943 'ut_time' => time(),
3945 'ut_type' => 7, # user process
3946 'ut_pid' => $main_process_id,
3947 'ut_line' => $config{'pam'},
3949 if (defined(&User::Utmp::putut)) {
3950 User::Utmp::putut(\%utmp);
3953 User::Utmp::pututline(\%utmp);
3958 # write_logout_utmp(user, host)
3959 # Record the logout by some user in utmp
3960 sub write_logout_utmp
3963 # Write utmp record for logout
3964 %utmp = ( 'ut_host' => $_[1],
3965 'ut_time' => time(),
3967 'ut_type' => 8, # dead process
3968 'ut_pid' => $main_process_id,
3969 'ut_line' => $config{'pam'},
3971 if (defined(&User::Utmp::putut)) {
3972 User::Utmp::putut(\%utmp);
3975 User::Utmp::pututline(\%utmp);
3980 # pam_conversation_process(username, write-pipe, read-pipe)
3981 # This function is called inside a sub-process to communicate with PAM. It sends
3982 # questions down one pipe, and reads responses from another
3983 sub pam_conversation_process
3985 local ($user, $writer, $reader) = @_;
3986 $miniserv::pam_conversation_process_writer = $writer;
3987 $miniserv::pam_conversation_process_reader = $reader;
3988 eval "use Authen::PAM;";
3989 local $convh = new Authen::PAM(
3990 $config{'pam'}, $user, \&miniserv::pam_conversation_process_func);
3991 local $pam_ret = $convh->pam_authenticate();
3992 if ($pam_ret == PAM_SUCCESS()) {
3993 local $acct_ret = $convh->pam_acct_mgmt();
3994 if ($acct_ret == PAM_SUCCESS()) {
3995 $convh->pam_open_session();
3996 print $writer "x2 $user 1 0 0\n";
3998 elsif ($acct_ret == PAM_NEW_AUTHTOK_REQD() ||
3999 $acct_ret == PAM_ACCT_EXPIRED()) {
4000 print $writer "x2 $user 1 1 0\n";
4003 print $writer "x0 Unknown PAM account status $acct_ret\n";
4007 print $writer "x2 $user 0 0 0\n";
4012 # pam_conversation_process_func(type, message, [type, message, ...])
4013 # A pipe that talks to both PAM and the master process
4014 sub pam_conversation_process_func
4017 select($miniserv::pam_conversation_process_writer); $| = 1; select(STDOUT);
4019 local ($type, $msg) = (shift, shift);
4021 local $ok = (print $miniserv::pam_conversation_process_writer "$type $msg\n");
4022 print $miniserv::pam_conversation_process_writer "\n";
4023 local $answer = <$miniserv::pam_conversation_process_reader>;
4024 $answer =~ s/\r|\n//g;
4025 push(@rv, PAM_SUCCESS(), $answer);
4027 push(@rv, PAM_SUCCESS());
4032 # Returns 4 new pipe file handles
4035 local ($PASSINr, $PASSINw, $PASSOUTr, $PASSOUTw);
4037 local %taken = ( (map { $_, 1 } @passin),
4038 (map { $_->{'PASSINr'} } values %conversations) );
4039 for($p=0; $taken{"PASSINr$p"}; $p++) { }
4040 $PASSINr = "PASSINr$p";
4041 $PASSINw = "PASSINw$p";
4042 $PASSOUTr = "PASSOUTr$p";
4043 $PASSOUTw = "PASSOUTw$p";
4044 pipe($PASSINr, $PASSINw);
4045 pipe($PASSOUTr, $PASSOUTw);
4046 select($PASSINw); $| = 1;
4047 select($PASSINr); $| = 1;
4048 select($PASSOUTw); $| = 1;
4049 select($PASSOUTw); $| = 1;
4051 return ($PASSINr, $PASSINw, $PASSOUTr, $PASSOUTw);
4054 # recv_pam_question(&conv, fd)
4055 # Reads one PAM question from the sub-process, and sends it to the HTTP handler.
4056 # Returns 0 if the conversation is over, 1 if not.
4057 sub recv_pam_question
4059 local ($conf, $fh) = @_;
4060 local $pr = $conf->{'PAMOUTr'};
4061 select($pr); $| = 1; select(STDOUT);
4062 local $line = <$pr>;
4063 $line =~ s/\r|\n//g;
4066 $line =~ s/\r|\n//g;
4068 $conf->{'last'} = time();
4071 print $fh "0 PAM conversation error\n";
4075 local ($type, $msg) = split(/\s+/, $line, 2);
4076 if ($type =~ /^x(\d+)/) {
4077 # Pass this status code through
4078 print $fh "$1 $msg\n";
4079 return $1 == 2 || $1 == 0 ? 0 : 1;
4081 elsif ($type == PAM_PROMPT_ECHO_ON()) {
4083 print $fh "1 $msg\n";
4086 elsif ($type == PAM_PROMPT_ECHO_OFF()) {
4088 print $fh "3 $msg\n";
4091 elsif ($type == PAM_ERROR_MSG() || $type == PAM_TEXT_INFO()) {
4092 # A message that does not require a response
4093 print $fh "4 $msg\n";
4098 print $fh "0 Unknown PAM message type $type\n";
4104 # send_pam_answer(&conv, answer)
4105 # Sends a response from the user to the PAM sub-process
4108 local ($conf, $answer) = @_;
4109 local $pw = $conf->{'PAMINw'};
4110 $conf->{'last'} = time();
4111 print $pw "$answer\n";
4114 # end_pam_conversation(&conv)
4115 # Clean up PAM conversation pipes and processes
4116 sub end_pam_conversation
4119 kill('KILL', $conv->{'pid'}) if ($conv->{'pid'});
4120 if ($conv->{'PAMINr'}) {
4121 close($conv->{'PAMINr'});
4122 close($conv->{'PAMOUTr'});
4123 close($conv->{'PAMINw'});
4124 close($conv->{'PAMOUTw'});
4126 delete($conversations{$conv->{'cid'}});
4129 # get_ipkeys(&miniserv)
4130 # Returns a list of IP address to key file mappings from a miniserv.conf entry
4134 foreach $k (keys %{$_[0]}) {
4135 if ($k =~ /^ipkey_(\S+)/) {
4136 local $ipkey = { 'ips' => [ split(/,/, $1) ],
4137 'key' => $_[0]->{$k},
4138 'index' => scalar(@rv) };
4139 $ipkey->{'cert'} = $_[0]->{'ipcert_'.$1};
4146 # create_ssl_context(keyfile, [certfile])
4147 sub create_ssl_context
4149 local ($keyfile, $certfile) = @_;
4151 eval { $ssl_ctx = Net::SSLeay::new_x_ctx() };
4152 $ssl_ctx ||= Net::SSLeay::CTX_new();
4153 $ssl_ctx || die "Failed to create SSL context : $!";
4154 if ($client_certs) {
4155 Net::SSLeay::CTX_load_verify_locations(
4156 $ssl_ctx, $config{'ca'}, "");
4157 Net::SSLeay::CTX_set_verify(
4158 $ssl_ctx, &Net::SSLeay::VERIFY_PEER, \&verify_client);
4160 if ($config{'extracas'}) {
4162 foreach $p (split(/\s+/, $config{'extracas'})) {
4163 Net::SSLeay::CTX_load_verify_locations(
4168 Net::SSLeay::CTX_use_RSAPrivateKey_file(
4170 &Net::SSLeay::FILETYPE_PEM) || die "Failed to open SSL key $keyfile";
4171 Net::SSLeay::CTX_use_certificate_file(
4172 $ssl_ctx, $certfile || $keyfile,
4173 &Net::SSLeay::FILETYPE_PEM) || die "Failed to open SSL cert $certfile";
4178 # ssl_connection_for_ip(socket, ipv6-flag)
4179 # Returns a new SSL connection object for some socket, or undef if failed
4180 sub ssl_connection_for_ip
4182 local ($sock, $ipv6) = @_;
4183 local $sn = getsockname($sock);
4185 print STDERR "Failed to get address for socket $sock\n";
4188 local (undef, $myip, undef) = &get_address_ip($sn, $ipv6);
4189 local $ssl_ctx = $ssl_contexts{$myip} || $ssl_contexts{"*"};
4190 local $ssl_con = Net::SSLeay::new($ssl_ctx);
4191 if ($config{'ssl_cipher_list'}) {
4192 # Force use of ciphers
4193 eval "Net::SSLeay::set_cipher_list(
4194 \$ssl_con, \$config{'ssl_cipher_list'})";
4196 print STDERR "SSL cipher $config{'ssl_cipher_list'} failed : ",
4202 Net::SSLeay::set_fd($ssl_con, fileno($sock));
4203 if (!Net::SSLeay::accept($ssl_con)) {
4204 print STDERR "Failed to initialize SSL connection\n";
4210 # login_redirect(username, password, host)
4211 # Calls the login redirect script (if configured), which may output a URL to
4212 # re-direct a user to after logging in.
4215 return undef if (!$config{'login_redirect'});
4216 local $quser = quotemeta($_[0]);
4217 local $qpass = quotemeta($_[1]);
4218 local $qhost = quotemeta($_[2]);
4219 local $url = `$config{'login_redirect'} $quser $qpass $qhost`;
4224 # reload_config_file()
4225 # Re-read %config, and call post-config actions
4226 sub reload_config_file
4228 &log_error("Reloading configuration");
4229 %config = &read_config_file($config_file);
4230 &update_vital_config();
4233 &build_config_mappings();
4234 &read_webmin_crons();
4236 if ($config{'session'}) {
4237 dbmclose(%sessiondb);
4238 dbmopen(%sessiondb, $config{'sessiondb'}, 0700);
4242 # read_config_file(file)
4243 # Reads the given config file, and returns a hash of values
4244 sub read_config_file
4247 open(CONF, $_[0]) || die "Failed to open config file $_[0] : $!";
4250 if (/^#/ || !/\S/) { next; }
4252 $name = $1; $val = $2;
4253 $name =~ s/^\s+//g; $name =~ s/\s+$//g;
4254 $val =~ s/^\s+//g; $val =~ s/\s+$//g;
4261 # update_vital_config()
4262 # Updates %config with defaults, and dies if something vital is missing
4263 sub update_vital_config
4265 my %vital = ("port", 80,
4267 "server", "MiniServ/0.01",
4268 "index_docs", "index.html index.htm index.cgi index.php",
4269 "addtype_html", "text/html",
4270 "addtype_txt", "text/plain",
4271 "addtype_gif", "image/gif",
4272 "addtype_jpg", "image/jpeg",
4273 "addtype_jpeg", "image/jpeg",
4274 "realm", "MiniServ",
4275 "session_login", "/session_login.cgi",
4276 "pam_login", "/pam_login.cgi",
4277 "password_form", "/password_form.cgi",
4278 "password_change", "/password_change.cgi",
4282 "unauth", "^/unauthenticated/ ^/robots.txt\$ ^[A-Za-z0-9\\-/_]+\\.jar\$ ^[A-Za-z0-9\\-/_]+\\.class\$ ^[A-Za-z0-9\\-/_]+\\.gif\$ ^[A-Za-z0-9\\-/_]+\\.png\$ ^[A-Za-z0-9\\-/_]+\\.conf\$ ^[A-Za-z0-9\\-/_]+\\.ico\$ ^/robots.txt\$",
4284 "expires", 7*24*60*60,
4285 "pam_test_user", "root",
4286 "precache", "lang/en */lang/en",
4288 foreach my $v (keys %vital) {
4290 if ($vital{$v} eq "") {
4291 die "Missing config option $v";
4293 $config{$v} = $vital{$v};
4296 if (!$config{'sessiondb'}) {
4297 $config{'pidfile'} =~ /^(.*)\/[^\/]+$/;
4298 $config{'sessiondb'} = "$1/sessiondb";
4300 if (!$config{'errorlog'}) {
4301 $config{'logfile'} =~ /^(.*)\/[^\/]+$/;
4302 $config{'errorlog'} = "$1/miniserv.error";
4304 if (!$config{'tempbase'}) {
4305 $config{'pidfile'} =~ /^(.*)\/[^\/]+$/;
4306 $config{'tempbase'} = "$1/cgitemp";
4308 if (!$config{'blockedfile'}) {
4309 $config{'pidfile'} =~ /^(.*)\/[^\/]+$/;
4310 $config{'blockedfile'} = "$1/blocked";
4312 if (!$config{'webmincron_dir'}) {
4313 $config_file =~ /^(.*)\/[^\/]+$/;
4314 $config{'webmincron_dir'} = "$1/webmincron/crons";
4316 if (!$config{'webmincron_last'}) {
4317 $config{'logfile'} =~ /^(.*)\/[^\/]+$/;
4318 $config{'webmincron_last'} = "$1/miniserv.lastcrons";
4320 if (!$config{'webmincron_wrapper'}) {
4321 $config{'webmincron_wrapper'} = $config{'root'}.
4322 "/webmincron/webmincron.pl";
4327 # Fills the %users and %certs hashes from the users file in %config
4336 undef(%lastchanges);
4339 if ($config{'userfile'}) {
4340 open(USERS, $config{'userfile'});
4343 local @user = split(/:/, $_, -1);
4344 $users{$user[0]} = $user[1];
4345 $certs{$user[0]} = $user[3] if ($user[3]);
4346 if ($user[4] =~ /^allow\s+(.*)/) {
4347 $allow{$user[0]} = $config{'alwaysresolve'} ?
4348 [ split(/\s+/, $1) ] :
4349 [ &to_ipaddress(split(/\s+/, $1)) ];
4351 elsif ($user[4] =~ /^deny\s+(.*)/) {
4352 $deny{$user[0]} = $config{'alwaysresolve'} ?
4353 [ split(/\s+/, $1) ] :
4354 [ &to_ipaddress(split(/\s+/, $1)) ];
4356 if ($user[5] =~ /days\s+(\S+)/) {
4357 $allowdays{$user[0]} = [ split(/,/, $1) ];
4359 if ($user[5] =~ /hours\s+(\d+)\.(\d+)-(\d+).(\d+)/) {
4360 $allowhours{$user[0]} = [ $1*60+$2, $3*60+$4 ];
4362 $lastchanges{$user[0]} = $user[6];
4363 $nochange{$user[0]} = $user[9];
4364 $temppass{$user[0]} = $user[10];
4369 # Test user DB, if configured
4370 if ($config{'userdb'}) {
4371 my $dbh = &connect_userdb($config{'userdb'});
4373 print STDERR "Failed to open users database : $dbh\n"
4376 &disconnect_userdb($config{'userdb'}, $dbh);
4381 # get_user_details(username)
4382 # Returns a hash ref of user details, either from config files or the user DB
4383 sub get_user_details
4385 my ($username) = @_;
4386 if (exists($users{$username})) {
4388 return { 'name' => $username,
4389 'pass' => $users{$username},
4390 'certs' => $certs{$username},
4391 'allow' => $allow{$username},
4392 'deny' => $deny{$username},
4393 'allowdays' => $allowdays{$username},
4394 'allowhours' => $allowhours{$username},
4395 'lastchanges' => $lastchanges{$username},
4396 'nochange' => $nochange{$username},
4397 'temppass' => $temppass{$username},
4398 'preroot' => $config{'preroot_'.$username},
4401 if ($config{'userdb'}) {
4402 # Try querying user database
4403 if (exists($get_user_details_cache{$username})) {
4405 return $get_user_details_cache{$username};
4407 print DEBUG "get_user_details: Connecting to user database\n";
4408 my ($dbh, $proto, $prefix, $args) = &connect_userdb($config{'userdb'});
4412 print DEBUG "get_user_details: Failed : $dbh\n";
4413 print STDERR "Failed to connect to user database : $dbh\n";
4415 elsif ($proto eq "mysql" || $proto eq "postgresql") {
4416 # Fetch user ID and password with SQL
4417 print DEBUG "get_user_details: Looking for $username in SQL\n";
4418 my $cmd = $dbh->prepare(
4419 "select id,pass from webmin_user where name = ?");
4420 if (!$cmd || !$cmd->execute($username)) {
4421 print STDERR "Failed to lookup user : ",
4425 my ($id, $pass) = $cmd->fetchrow();
4428 &disconnect_userdb($config{'userdb'}, $dbh);
4429 $get_user_details_cache{$username} = undef;
4430 print DEBUG "get_user_details: User not found\n";
4433 print DEBUG "get_user_details: id=$id pass=$pass\n";
4435 # Fetch attributes and add to user object
4436 print DEBUG "get_user_details: finding user attributes\n";
4437 my $cmd = $dbh->prepare(
4438 "select attr,value from webmin_user_attr where id = ?");
4439 if (!$cmd || !$cmd->execute($id)) {
4440 print STDERR "Failed to lookup user attrs : ",
4444 $user = { 'name' => $username,
4447 'proto' => $proto };
4448 while(my ($attr, $value) = $cmd->fetchrow()) {
4449 $attrs{$attr} = $value;
4453 elsif ($proto eq "ldap") {
4454 # Fetch user DN with LDAP
4455 print DEBUG "get_user_details: Looking for $username in LDAP\n";
4456 my $rv = $dbh->search(
4458 filter => '(&(cn='.$username.')(objectClass='.
4459 $args->{'userclass'}.'))',
4461 if (!$rv || $rv->code) {
4462 print STDERR "Failed to lookup user : ",
4463 ($rv ? $rv->error : "Unknown error"),"\n";
4466 my ($u) = $rv->all_entries();
4468 &disconnect_userdb($config{'userdb'}, $dbh);
4469 $get_user_details_cache{$username} = undef;
4470 print DEBUG "get_user_details: User not found\n";
4474 # Extract attributes
4475 my $pass = $u->get_value('webminPass');
4476 $user = { 'name' => $username,
4479 'proto' => $proto };
4480 foreach my $la ($u->get_value('webminAttr')) {
4481 my ($attr, $value) = split(/=/, $la, 2);
4482 $attrs{$attr} = $value;
4486 # Convert DB attributes into user object fields
4488 print DEBUG "get_user_details: got ",scalar(keys %attrs),
4490 $user->{'certs'} = $attrs{'cert'};
4491 if ($attrs{'allow'}) {
4492 $user->{'allow'} = $config{'alwaysresolve'} ?
4493 [ split(/\s+/, $attrs{'allow'}) ] :
4494 [ &to_ipaddress(split(/\s+/,$attrs{'allow'})) ];
4496 if ($attrs{'deny'}) {
4497 $user->{'deny'} = $config{'alwaysresolve'} ?
4498 [ split(/\s+/, $attrs{'deny'}) ] :
4499 [ &to_ipaddress(split(/\s+/,$attrs{'deny'})) ];
4501 if ($attrs{'days'}) {
4502 $user->{'allowdays'} = [ split(/,/, $attrs{'days'}) ];
4504 if ($attrs{'hoursfrom'} && $attrs{'hoursto'}) {
4505 my ($hf, $mf) = split(/\./, $attrs{'hoursfrom'});
4506 my ($ht, $mt) = split(/\./, $attrs{'hoursto'});
4507 $user->{'allowhours'} = [ $hf*60+$ht, $ht*60+$mt ];
4509 $user->{'lastchanges'} = $attrs{'lastchange'};
4510 $user->{'nochange'} = $attrs{'nochange'};
4511 $user->{'temppass'} = $attrs{'temppass'};
4512 $user->{'preroot'} = $attrs{'theme'};
4514 &disconnect_userdb($config{'userdb'}, $dbh);
4515 $get_user_details_cache{$user->{'name'}} = $user;
4521 # find_user_by_cert(cert)
4522 # Returns a username looked up by certificate
4523 sub find_user_by_cert
4525 my ($peername) = @_;
4526 my $peername2 = $peername;
4527 $peername2 =~ s/Email=/emailAddress=/ || $peername2 =~ s/emailAddress=/Email=/;
4529 # First check users in local files
4530 foreach my $username (keys %certs) {
4531 if ($certs{$username} eq $peername ||
4532 $certs{$username} eq $peername2) {
4538 if ($config{'userdb'}) {
4539 my ($dbh, $proto) = &connect_userdb($config{'userdb'});
4543 elsif ($proto eq "mysql" || $proto eq "postgresql") {
4545 my $cmd = $dbh->prepare("select webmin_user.name from webmin_user,webmin_user_attr where webmin_user.id = webmin_user_attr.id and webmin_user_attr.attr = 'cert' and webmin_user_attr.value = ?");
4546 return undef if (!$cmd);
4547 foreach my $p ($peername, $peername2) {
4549 if ($cmd->execute($p)) {
4550 ($username) = $cmd->fetchrow();
4553 return $username if ($username);
4556 elsif ($proto eq "ldap") {
4558 my $rv = $dbh->search(
4560 filter => '(objectClass='.
4561 $args->{'userclass'}.')',
4563 attrs => [ 'cn', 'webminAttr' ]);
4564 if ($rv && !$rv->code) {
4565 foreach my $u ($rv->all_entries) {
4566 my @attrs = $u->get_value('webminAttr');
4567 foreach my $la (@attrs) {
4568 my ($attr, $value) = split(/=/, $la, 2);
4569 if ($attr eq "cert" &&
4570 ($value eq $peername ||
4571 $value eq $peername2)) {
4572 return $u->get_value('cn');
4582 # connect_userdb(string)
4583 # Returns a handle for talking to a user database - may be a DBI or LDAP handle.
4584 # On failure returns an error message string. In an array context, returns the
4585 # protocol type too.
4589 my ($proto, $user, $pass, $host, $prefix, $args) = &split_userdb_string($str);
4590 if ($proto eq "mysql") {
4591 # Connect to MySQL with DBI
4592 my $drh = eval "use DBI; DBI->install_driver('mysql');";
4593 $drh || return $text{'sql_emysqldriver'};
4594 my ($host, $port) = split(/:/, $host);
4595 my $cstr = "database=$prefix;host=$host";
4596 $cstr .= ";port=$port" if ($port);
4597 print DEBUG "connect_userdb: Connecting to MySQL $cstr as $user\n";
4598 my $dbh = $drh->connect($cstr, $user, $pass, { });
4599 $dbh || return &text('sql_emysqlconnect', $drh->errstr);
4600 print DEBUG "connect_userdb: Connected OK\n";
4601 return wantarray ? ($dbh, $proto, $prefix, $args) : $dbh;
4603 elsif ($proto eq "postgresql") {
4604 # Connect to PostgreSQL with DBI
4605 my $drh = eval "use DBI; DBI->install_driver('Pg');";
4606 $drh || return $text{'sql_epostgresqldriver'};
4607 my ($host, $port) = split(/:/, $host);
4608 my $cstr = "dbname=$prefix;host=$host";
4609 $cstr .= ";port=$port" if ($port);
4610 print DEBUG "connect_userdb: Connecting to PostgreSQL $cstr as $user\n";
4611 my $dbh = $drh->connect($cstr, $user, $pass);
4612 $dbh || return &text('sql_epostgresqlconnect', $drh->errstr);
4613 print DEBUG "connect_userdb: Connected OK\n";
4614 return wantarray ? ($dbh, $proto, $prefix, $args) : $dbh;
4616 elsif ($proto eq "ldap") {
4617 # Connect with perl LDAP module
4618 eval "use Net::LDAP";
4619 $@ && return $text{'sql_eldapdriver'};
4620 my ($host, $port) = split(/:/, $host);
4621 my $scheme = $args->{'scheme'} || 'ldap';
4623 $port = $scheme eq 'ldaps' ? 636 : 389;
4625 my $ldap = Net::LDAP->new($host,
4627 'scheme' => $scheme);
4628 $ldap || return &text('sql_eldapconnect', $host);
4630 if ($args->{'tls'}) {
4631 # Switch to TLS mode
4632 eval { $mesg = $ldap->start_tls(); };
4633 if ($@ || !$mesg || $mesg->code) {
4634 return &text('sql_eldaptls',
4635 $@ ? $@ : $mesg ? $mesg->error : "Unknown error");
4638 # Login to the server
4640 $mesg = $ldap->bind(dn => $user, password => $pass);
4643 $mesg = $ldap->bind(dn => $user, anonymous => 1);
4645 if (!$mesg || $mesg->code) {
4646 return &text('sql_eldaplogin', $user,
4647 $mesg ? $mesg->error : "Unknown error");
4649 return wantarray ? ($ldap, $proto, $prefix, $args) : $ldap;
4652 return "Unknown protocol $proto";
4656 # split_userdb_string(string)
4657 # Converts a string like mysql://user:pass@host/db into separate parts
4658 sub split_userdb_string
4661 if ($str =~ /^([a-z]+):\/\/([^:]*):([^\@]*)\@([a-z0-9\.\-\_]+)\/([^\?]+)(\?(.*))?$/) {
4662 my ($proto, $user, $pass, $host, $prefix, $argstr) =
4663 ($1, $2, $3, $4, $5, $7);
4664 my %args = map { split(/=/, $_, 2) } split(/\&/, $argstr);
4665 return ($proto, $user, $pass, $host, $prefix, \%args);
4670 # disconnect_userdb(string, &handle)
4671 # Closes a handle opened by connect_userdb
4672 sub disconnect_userdb
4675 if ($str =~ /^(mysql|postgresql):/) {
4679 elsif ($str =~ /^ldap:/) {
4686 # Fills %mime with entries from file in %config and extra settings in %config
4690 if ($config{"mimetypes"} ne "") {
4691 open(MIME, $config{"mimetypes"});
4694 if (/^(\S+)\s+(.*)$/) {
4696 my @exts = split(/\s+/, $2);
4697 foreach my $ext (@exts) {
4698 $mime{$ext} = $type;
4704 foreach my $k (keys %config) {
4705 if ($k !~ /^addtype_(.*)$/) { next; }
4706 $mime{$1} = $config{$k};
4710 # build_config_mappings()
4711 # Build the anonymous access list, IP access list, unauthenticated URLs list,
4712 # redirect mapping and allow and deny lists from %config
4713 sub build_config_mappings
4715 # build anonymous access list
4717 foreach my $a (split(/\s+/, $config{'anonymous'})) {
4718 if ($a =~ /^([^=]+)=(\S+)$/) {
4719 $anonymous{$1} = $2;
4723 # build IP access list
4725 foreach my $a (split(/\s+/, $config{'ipaccess'})) {
4726 if ($a =~ /^([^=]+)=(\S+)$/) {
4731 # build unauthenticated URLs list
4732 @unauth = split(/\s+/, $config{'unauth'});
4734 # build redirect mapping
4736 foreach my $r (split(/\s+/, $config{'redirect'})) {
4737 if ($r =~ /^([^=]+)=(\S+)$/) {
4742 # build prefixes to be stripped
4743 undef(@strip_prefix);
4744 foreach my $r (split(/\s+/, $config{'strip_prefix'})) {
4745 push(@strip_prefix, $r);
4748 # Init allow and deny lists
4749 @deny = split(/\s+/, $config{"deny"});
4750 @deny = &to_ipaddress(@deny) if (!$config{'alwaysresolve'});
4751 @allow = split(/\s+/, $config{"allow"});
4752 @allow = &to_ipaddress(@allow) if (!$config{'alwaysresolve'});
4755 if ($config{'allowusers'}) {
4756 @allowusers = split(/\s+/, $config{'allowusers'});
4758 elsif ($config{'denyusers'}) {
4759 @denyusers = split(/\s+/, $config{'denyusers'});
4762 # Build list of unixauth mappings
4764 foreach my $ua (split(/\s+/, $config{'unixauth'})) {
4765 if ($ua =~ /^(\S+)=(\S+)$/) {
4769 $unixauth{"*"} = $ua;
4773 # Build list of non-session-auth pages
4774 undef(%sessiononly);
4775 foreach my $sp (split(/\s+/, $config{'sessiononly'})) {
4776 $sessiononly{$sp} = 1;
4779 # Build list of logout times
4780 undef(@logouttimes);
4781 foreach my $a (split(/\s+/, $config{'logouttimes'})) {
4782 if ($a =~ /^([^=]+)=(\S+)$/) {
4783 push(@logouttimes, [ $1, $2 ]);
4786 push(@logouttimes, [ undef, $config{'logouttime'} ]);
4788 # Build list of DAV pathss
4790 foreach my $d (split(/\s+/, $config{'davpaths'})) {
4791 push(@davpaths, $d);
4793 @davusers = split(/\s+/, $config{'dav_users'});
4795 # Mobile agent substrings and hostname prefixes
4796 @mobile_agents = split(/\t+/, $config{'mobile_agents'});
4797 @mobile_prefixes = split(/\s+/, $config{'mobile_prefixes'});
4800 @expires_paths = ( );
4801 foreach my $pe (split(/\t+/, $config{'expires_paths'})) {
4802 my ($p, $e) = split(/=/, $pe);
4803 if ($p && $e ne '') {
4804 push(@expires_paths, [ $p, $e ]);
4810 if ($config{'debug'}) {
4811 open(DEBUG, ">>$config{'debug'}");
4814 open(DEBUG, ">/dev/null");
4817 # Reset cache of sudo checks
4821 # is_group_member(&uinfo, groupname)
4822 # Returns 1 if some user is a primary or secondary member of a group
4825 local ($uinfo, $group) = @_;
4826 local @ginfo = getgrnam($group);
4827 return 0 if (!@ginfo);
4828 return 1 if ($ginfo[2] == $uinfo->[3]); # primary member
4829 foreach my $m (split(/\s+/, $ginfo[3])) {
4830 return 1 if ($m eq $uinfo->[0]);
4835 # prefix_to_mask(prefix)
4836 # Converts a number like 24 to a mask like 255.255.255.0
4839 return $_[0] >= 24 ? "255.255.255.".(256-(2 ** (32-$_[0]))) :
4840 $_[0] >= 16 ? "255.255.".(256-(2 ** (24-$_[0]))).".0" :
4841 $_[0] >= 8 ? "255.".(256-(2 ** (16-$_[0]))).".0.0" :
4842 (256-(2 ** (8-$_[0]))).".0.0.0";
4845 # get_logout_time(user, session-id)
4846 # Given a username, returns the idle time before he will be logged out
4849 local ($user, $sid) = @_;
4850 if (!defined($logout_time_cache{$user,$sid})) {
4852 foreach my $l (@logouttimes) {
4853 if ($l->[0] =~ /^\@(.*)$/) {
4854 # Check group membership
4855 local @uinfo = getpwnam($user);
4856 if (@uinfo && &is_group_member(\@uinfo, $1)) {
4860 elsif ($l->[0] =~ /^\//) {
4861 # Check file contents
4862 open(FILE, $l->[0]);
4879 if ($l->[0] eq $user) {
4883 last if (defined($time));
4885 $logout_time_cache{$user,$sid} = $time;
4887 return $logout_time_cache{$user,$sid};
4890 # password_crypt(password, salt)
4891 # If the salt looks like MD5 and we have a library for it, perform MD5 hashing
4892 # of a password. Otherwise, do Unix crypt.
4895 local ($pass, $salt) = @_;
4896 if ($salt =~ /^\$1\$/ && $use_md5) {
4897 return &encrypt_md5($pass, $salt);
4900 return &unix_crypt($pass, $salt);
4904 # unix_crypt(password, salt)
4905 # Performs standard Unix hashing for a password
4908 local ($pass, $salt) = @_;
4909 if ($use_perl_crypt) {
4910 return Crypt::UnixCrypt::crypt($pass, $salt);
4913 return crypt($pass, $salt);
4917 # handle_dav_request(davpath)
4918 # Pass a request on to the Net::DAV::Server module
4919 sub handle_dav_request
4922 eval "use Filesys::Virtual::Plain";
4923 eval "use Net::DAV::Server";
4924 eval "use HTTP::Request";
4925 eval "use HTTP::Headers";
4927 if ($Net::DAV::Server::VERSION eq '1.28' && $config{'dav_nolock'}) {
4928 delete $Net::DAV::Server::implemented{lock};
4929 delete $Net::DAV::Server::implemented{unlock};
4932 # Read in request data
4933 if (!$posted_data) {
4934 local $clen = $header{"content-length"};
4935 while(length($posted_data) < $clen) {
4936 $buf = &read_data($clen - length($posted_data));
4937 if (!length($buf)) {
4938 &http_error(500, "Failed to read POST request");
4940 $posted_data .= $buf;
4944 # For subsequent logging
4945 open(MINISERVLOG, ">>$config{'logfile'}");
4949 local @u = getpwnam($authuser);
4950 if ($config{'dav_remoteuser'} && !$< && $validated) {
4953 $( = $u[3]; $) = "$u[3] $u[3]";
4954 ($>, $<) = ($u[2], $u[2]);
4956 if ($config{'dav_root'} eq '*') {
4961 &http_error(500, "Unix user $authuser does not exist");
4965 $root ||= $config{'dav_root'};
4968 # Check if this user can use DAV
4970 &users_match(\@u, @davusers) ||
4971 &http_error(500, "You are not allowed to access DAV");
4975 my $filesys = Filesys::Virtual::Plain->new({root_path => $root});
4976 my $webdav = Net::DAV::Server->new();
4977 $webdav->filesys($filesys);
4979 # Make up a request object, and feed to DAV
4980 local $ho = HTTP::Headers->new;
4981 foreach my $h (keys %header) {
4982 next if (lc($h) eq "connection");
4983 $ho->header($h => $header{$h});
4986 $request_uri =~ s/^\Q$path\E//;
4987 $request_uri = "/" if ($request_uri eq "");
4989 my $request = HTTP::Request->new($method, $request_uri, $ho,
4991 if ($config{'dav_debug'}) {
4992 print STDERR "DAV request :\n";
4993 print STDERR "---------------------------------------------\n";
4994 print STDERR $request->as_string();
4995 print STDERR "---------------------------------------------\n";
4997 my $response = $webdav->run($request);
4999 # Send back the reply
5000 &write_data("HTTP/1.1 ",$response->code()," ",$response->message(),"\r\n");
5001 local $content = $response->content();
5003 $content =~ s|href>/(.+)<|href>$path/$1<|g;
5004 $content =~ s|href>/<|href>$path<|g;
5006 foreach my $h ($response->header_field_names) {
5007 next if (lc($h) eq "connection" || lc($h) eq "content-length");
5008 &write_data("$h: ",$response->header($h),"\r\n");
5010 &write_data("Content-length: ",length($content),"\r\n");
5011 local $rv = &write_keep_alive(0);
5012 &write_data("\r\n");
5013 &write_data($content);
5015 if ($config{'dav_debug'}) {
5016 print STDERR "DAV reply :\n";
5017 print STDERR "---------------------------------------------\n";
5018 print STDERR "HTTP/1.1 ",$response->code()," ",$response->message(),"\r\n";
5019 foreach my $h ($response->header_field_names) {
5020 next if (lc($h) eq "connection" || lc($h) eq "content-length");
5021 print STDERR "$h: ",$response->header($h),"\r\n";
5023 print STDERR "Content-length: ",length($content),"\r\n";
5024 print STDERR "\r\n";
5025 print STDERR $content;
5026 print STDERR "---------------------------------------------\n";
5030 &log_request($acpthost, $authuser, $reqline, $response->code(),
5031 length($response->content()));
5034 # get_system_hostname()
5035 # Returns the hostname of this system, for reporting to listeners
5036 sub get_system_hostname
5038 # On Windows, try computername environment variable
5039 return $ENV{'computername'} if ($ENV{'computername'});
5040 return $ENV{'COMPUTERNAME'} if ($ENV{'COMPUTERNAME'});
5042 # If a specific command is set, use it first
5043 if ($config{'hostname_command'}) {
5044 local $out = `($config{'hostname_command'}) 2>&1`;
5051 # First try the hostname command
5052 local $out = `hostname 2>&1`;
5053 if (!$? && $out =~ /\S/) {
5058 # Try the Sys::Hostname module
5059 eval "use Sys::Hostname";
5061 local $rv = eval "hostname()";
5067 # Must use net name on Windows
5068 local $out = `net name 2>&1`;
5069 if ($out =~ /\-+\r?\n(\S+)/) {
5076 # indexof(string, array)
5077 # Returns the index of some value in an array, or -1
5080 for($i=1; $i <= $#_; $i++) {
5081 if ($_[$i] eq $_[0]) { return $i - 1; }
5087 # has_command(command)
5088 # Returns the full path if some command is in the path, undef if not
5092 if (!$_[0]) { return undef; }
5093 if (exists($has_command_cache{$_[0]})) {
5094 return $has_command_cache{$_[0]};
5097 if ($_[0] =~ /^\//) {
5098 $rv = -x $_[0] ? $_[0] : undef;
5101 local $sp = $on_windows ? ';' : ':';
5102 foreach $d (split($sp, $ENV{PATH})) {
5103 if (-x "$d/$_[0]") {
5108 foreach my $sfx (".exe", ".com", ".bat") {
5109 if (-r "$d/$_[0]".$sfx) {
5110 $rv = "$d/$_[0]".$sfx;
5117 $has_command_cache{$_[0]} = $rv;
5121 # check_sudo_permissions(user, pass)
5122 # Returns 1 if some user can run any command via sudo
5123 sub check_sudo_permissions
5125 local ($user, $pass) = @_;
5127 # First try the pipes
5129 print DEBUG "check_sudo_permissions: querying cache for $user\n";
5130 print $PASSINw "readsudo $user\n";
5131 local $can = <$PASSOUTr>;
5133 print DEBUG "check_sudo_permissions: cache said $can\n";
5134 if ($can =~ /^\d+$/ && $can != 2) {
5139 local $ptyfh = new IO::Pty;
5140 print DEBUG "check_sudo_permissions: ptyfh=$ptyfh\n";
5142 print STDERR "Failed to create new PTY with IO::Pty\n";
5145 local @uinfo = getpwnam($user);
5147 print STDERR "Unix user $user does not exist for sudo\n";
5151 # Execute sudo in a sub-process, via a pty
5152 local $ttyfh = $ptyfh->slave();
5153 print DEBUG "check_sudo_permissions: ttyfh=$ttyfh\n";
5154 local $tty = $ptyfh->ttyname();
5155 print DEBUG "check_sudo_permissions: tty=$tty\n";
5156 chown($uinfo[2], $uinfo[3], $tty);
5158 print DEBUG "check_sudo_permissions: about to fork..\n";
5159 local $pid = fork();
5160 print DEBUG "check_sudo_permissions: fork=$pid pid=$$\n";
5162 print STDERR "fork for sudo failed : $!\n";
5167 $ptyfh->make_slave_controlling_terminal();
5168 close(STDIN); close(STDOUT); close(STDERR);
5169 untie(*STDIN); untie(*STDOUT); untie(*STDERR);
5170 close($PASSINw); close($PASSOUTr);
5171 $( = $uinfo[3]; $) = "$uinfo[3] $uinfo[3]";
5172 ($>, $<) = ($uinfo[2], $uinfo[2]);
5177 open(STDIN, "<&SUDOr");
5178 open(STDOUT, ">$tty");
5179 open(STDERR, ">&STDOUT");
5182 print "Exec failed : $!\n";
5185 print DEBUG "check_sudo_permissions: pid=$pid\n";
5187 $ptyfh->close_slave();
5189 # Send password, and get back response
5190 local $oldfh = select(SUDOw);
5193 print DEBUG "check_sudo_permissions: about to send pass\n";
5194 local $SIG{'PIPE'} = 'ignore'; # Sometimes sudo doesn't ask for a password
5195 print SUDOw $pass,"\n";
5196 print DEBUG "check_sudo_permissions: sent pass=$pass\n";
5200 print DEBUG "check_sudo_permissions: got $_";
5206 local ($ok) = ($out =~ /\(ALL\)\s+ALL|\(ALL\)\s+NOPASSWD:\s+ALL|\(ALL\s*:\s*ALL\)\s+ALL/ ? 1 : 0);
5210 print $PASSINw "writesudo $user $ok\n";
5216 # is_mobile_useragent(agent)
5217 # Returns 1 if some user agent looks like a cellphone or other mobile device,
5219 sub is_mobile_useragent
5221 local ($agent) = @_;
5223 "UP.Link", # Openwave
5224 "Nokia", # All Nokias start with Nokia
5225 "MOT-", # All Motorola phones start with MOT-
5226 "SAMSUNG", # Samsung browsers
5227 "Samsung", # Samsung browsers
5228 "SEC-", # Samsung browsers
5229 "AU-MIC", # Samsung browsers
5230 "AUDIOVOX", # Audiovox
5231 "BlackBerry", # BlackBerry
5232 "hiptop", # Danger hiptop Sidekick
5233 "SonyEricsson", # Sony Ericsson
5234 "Ericsson", # Old Ericsson browsers , mostly WAP
5235 "Mitsu/1.1.A", # Mitsubishi phones
5236 "Panasonic WAP", # Panasonic old WAP phones
5237 "DoCoMo", # DoCoMo phones
5238 "Lynx", # Lynx text-mode linux browser
5239 "Links", # Another text-mode linux browser
5241 local @substrings = (
5242 "UP.Browser", # Openwave
5243 "MobilePhone", # NetFront
5244 "AU-MIC-A700", # Samsung A700 Obigo browsers
5245 "Danger hiptop", # Danger Sidekick hiptop
5246 "Windows CE", # Windows CE Pocket PC
5247 "IEMobile", # Windows mobile browser
5248 "Blazer", # Palm Treo Blazer
5249 "BlackBerry", # BlackBerries can emulate other browsers, but
5250 # they still keep this string in the UserAgent
5251 "SymbianOS", # New Series60 browser has safari in it and
5252 # SymbianOS is the only distinguishing string
5253 "iPhone", # Apple iPhone KHTML browser
5254 "iPod", # iPod touch browser
5255 "MobileSafari", # HTTP client in iPhone
5257 "Opera Mini", # Opera Mini
5258 "HTC_P3700", # HTC mobile device
5260 "webOS/", # Palm WebOS
5261 "Nintendo DS", # DSi / DSi-XL
5263 foreach my $p (@prefixes) {
5264 return 1 if ($agent =~ /^\Q$p\E/);
5266 foreach my $s (@substrings, @mobile_agents) {
5267 return 1 if ($agent =~ /\Q$s\E/);
5272 # write_blocked_file()
5273 # Writes out a text file of blocked hosts and users
5274 sub write_blocked_file
5276 open(BLOCKED, ">$config{'blockedfile'}");
5277 foreach my $d (grep { $hostfail{$_} } @deny) {
5278 print BLOCKED "host $d $hostfail{$d} $blockhosttime{$d}\n";
5280 foreach my $d (grep { $userfail{$_} } @denyusers) {
5281 print BLOCKED "user $d $userfail{$d} $blockusertime{$d}\n";
5284 chmod(0700, $config{'blockedfile'});
5289 open(PIDFILE, ">$config{'pidfile'}");
5290 printf PIDFILE "%d\n", getpid();
5292 $miniserv_main_pid = getpid();
5295 # lock_user_password(user)
5296 # Updates a user's password file entry to lock it, both in memory and on disk.
5297 # Returns 1 if done, -1 if no such user, 0 if already locked
5298 sub lock_user_password
5301 local $uinfo = &get_user_details($user);
5306 if ($uinfo->{'pass'} =~ /^\!/) {
5310 if (!$uinfo->{'proto'}) {
5311 # Write to users file
5312 $users{$user} = "!".$users{$user};
5313 open(USERS, $config{'userfile'});
5314 local @ufile = <USERS>;
5316 foreach my $u (@ufile) {
5317 local @uinfo = split(/:/, $u);
5318 if ($uinfo[0] eq $user) {
5319 $uinfo[1] = $users{$user};
5321 $u = join(":", @uinfo);
5323 open(USERS, ">$config{'userfile'}");
5329 if ($config{'userdb'}) {
5331 my ($dbh, $proto, $prefix, $args) = &connect_userdb($config{'userdb'});
5335 elsif ($proto eq "mysql" || $proto eq "postgresql") {
5336 # Update user attribute
5337 my $cmd = $dbh->prepare(
5338 "update webmin_user set pass = ? where id = ?");
5339 if (!$cmd || !$cmd->execute("!".$uinfo->{'pass'},
5342 print STDERR "Failed to lock password : ",
5346 $cmd->finish() if ($cmd);
5348 elsif ($proto eq "ldap") {
5349 # Update LDAP object
5350 my $rv = $dbh->modify($uinfo->{'id'},
5351 replace => { 'webminPass' => '!'.$uinfo->{'pass'} });
5352 if (!$rv || $rv->code) {
5353 print STDERR "Failed to lock password : ",
5354 ($rv ? $rv->error : "Unknown error"),"\n";
5358 &disconnect_userdb($config{'userdb'}, $dbh);
5362 return -1; # This should never be reached
5365 # hash_session_id(sid)
5366 # Returns an MD5 or Unix-crypted session ID
5370 if (!$hash_session_id_cache{$sid}) {
5373 $hash_session_id_cache{$sid} = &encrypt_md5($sid);
5377 $hash_session_id_cache{$sid} = &unix_crypt($sid, "XX");
5380 return $hash_session_id_cache{$sid};
5383 # encrypt_md5(string, [salt])
5384 # Returns a string encrypted in MD5 format
5387 local ($passwd, $salt) = @_;
5388 local $magic = '$1$';
5389 if ($salt =~ /^\$1\$([^\$]+)/) {
5390 # Extract actual salt from already encrypted password
5395 local $ctx = eval "new $use_md5";
5402 # Add some more stuff from the hash of the password and salt
5403 local $ctx1 = eval "new $use_md5";
5404 $ctx1->add($passwd);
5408 $ctx1->add($passwd);
5409 local $final = $ctx1->digest();
5410 for($pl=length($passwd); $pl>0; $pl-=16) {
5411 $ctx->add($pl > 16 ? $final : substr($final, 0, $pl));
5414 # This piece of code seems rather pointless, but it's in the C code that
5415 # does MD5 in PAM so it has to go in!
5418 for($i=length($passwd); $i; $i >>= 1) {
5423 $ctx->add(substr($passwd, $j, 1));
5426 $final = $ctx->digest();
5429 # This loop exists only to waste time
5430 for($i=0; $i<1000; $i++) {
5431 $ctx1 = eval "new $use_md5";
5432 $ctx1->add($i & 1 ? $passwd : $final);
5433 $ctx1->add($salt) if ($i % 3);
5434 $ctx1->add($passwd) if ($i % 7);
5435 $ctx1->add($i & 1 ? $final : $passwd);
5436 $final = $ctx1->digest();
5440 # Convert the 16-byte final string into a readable form
5442 local @final = map { ord($_) } split(//, $final);
5443 $l = ($final[ 0]<<16) + ($final[ 6]<<8) + $final[12];
5444 $rv .= &to64($l, 4);
5445 $l = ($final[ 1]<<16) + ($final[ 7]<<8) + $final[13];
5446 $rv .= &to64($l, 4);
5447 $l = ($final[ 2]<<16) + ($final[ 8]<<8) + $final[14];
5448 $rv .= &to64($l, 4);
5449 $l = ($final[ 3]<<16) + ($final[ 9]<<8) + $final[15];
5450 $rv .= &to64($l, 4);
5451 $l = ($final[ 4]<<16) + ($final[10]<<8) + $final[ 5];
5452 $rv .= &to64($l, 4);
5454 $rv .= &to64($l, 2);
5456 # Add salt if needed
5458 return $magic.$salt.'$'.$rv;
5467 local ($v, $n) = @_;
5470 $r .= $itoa64[$v & 0x3f];
5476 # read_file(file, &assoc, [&order], [lowercase])
5477 # Fill an associative array with name=value pairs from a file
5480 open(ARFILE, $_[0]) || return 0;
5483 if (!/^#/ && /^([^=]*)=(.*)$/) {
5484 $_[1]->{$_[3] ? lc($1) : $1} = $2;
5485 push(@{$_[2]}, $1) if ($_[2]);
5492 # write_file(file, array)
5493 # Write out the contents of an associative array as name=value lines
5496 local(%old, @order);
5497 &read_file($_[0], \%old, \@order);
5498 open(ARFILE, ">$_[0]");
5499 foreach $k (@order) {
5500 print ARFILE $k,"=",$_[1]->{$k},"\n" if (exists($_[1]->{$k}));
5502 foreach $k (keys %{$_[1]}) {
5503 print ARFILE $k,"=",$_[1]->{$k},"\n" if (!exists($old{$k}));
5508 # execute_ready_webmin_crons()
5509 # Find and run any cron jobs that are due, based on their last run time and
5510 # execution interval
5511 sub execute_ready_webmin_crons
5515 foreach my $cron (@webmincrons) {
5517 if (!$webmincron_last{$cron->{'id'}}) {
5518 # If not ever run before, don't run right away
5519 $webmincron_last{$cron->{'id'}} = $now;
5522 elsif ($cron->{'interval'} &&
5523 $now - $webmincron_last{$cron->{'id'}} > $cron->{'interval'}) {
5524 # Older than interval .. time to run
5527 elsif ($cron->{'mins'}) {
5528 # Check if current time matches spec, and we haven't run in the
5530 my @tm = localtime($now);
5531 if (&matches_cron($cron->{'mins'}, $tm[1]) &&
5532 &matches_cron($cron->{'hours'}, $tm[2]) &&
5533 &matches_cron($cron->{'days'}, $tm[3]) &&
5534 &matches_cron($cron->{'months'}, $tm[4]+1) &&
5535 &matches_cron($cron->{'weekdays'}, $tm[6]) &&
5536 $now - $webmincron_last{$cron->{'id'}} > 60) {
5542 print DEBUG "Running cron id=$cron->{'id'} ".
5543 "module=$cron->{'module'} func=$cron->{'func'}\n";
5544 $webmincron_last{$cron->{'id'}} = $now;
5548 # Run via a wrapper command, which we run like a CGI
5549 dbmclose(%sessiondb);
5551 # Setup CGI-like environment
5552 $envtz = $ENV{"TZ"};
5553 $envuser = $ENV{"USER"};
5554 $envpath = $ENV{"PATH"};
5555 $envlang = $ENV{"LANG"};
5556 $envroot = $ENV{"SystemRoot"};
5557 $envperllib = $ENV{'PERLLIB'};
5558 foreach my $k (keys %ENV) {
5561 $ENV{"PATH"} = $envpath if ($envpath);
5562 $ENV{"TZ"} = $envtz if ($envtz);
5563 $ENV{"USER"} = $envuser if ($envuser);
5564 $ENV{"OLD_LANG"} = $envlang if ($envlang);
5565 $ENV{"SystemRoot"} = $envroot if ($envroot);
5566 $ENV{'PERLLIB'} = $envperllib if ($envperllib);
5567 $ENV{"HOME"} = $user_homedir;
5568 $ENV{"SERVER_SOFTWARE"} = $config{"server"};
5569 $ENV{"SERVER_ADMIN"} = $config{"email"};
5571 $ENV{"SERVER_ROOT"} = $root0;
5572 $ENV{"SERVER_REALROOT"} = $root0;
5573 $ENV{"SERVER_PORT"} = $config{'port'};
5574 $ENV{"WEBMIN_CRON"} = 1;
5575 $ENV{"DOCUMENT_ROOT"} = $root0;
5576 $ENV{"DOCUMENT_REALROOT"} = $root0;
5577 $ENV{"MINISERV_CONFIG"} = $config_file;
5578 $ENV{"HTTPS"} = "ON" if ($use_ssl);
5579 $ENV{"MINISERV_PID"} = $miniserv_main_pid;
5580 $ENV{"SCRIPT_FILENAME"} = $config{'webmincron_wrapper'};
5581 if ($ENV{"SCRIPT_FILENAME"} =~ /^\Q$root0\E(\/.*)$/) {
5582 $ENV{"SCRIPT_NAME"} = $1;
5584 $config{'webmincron_wrapper'} =~ /^(.*)\//;
5586 foreach $k (keys %config) {
5587 if ($k =~ /^env_(\S+)$/) {
5588 $ENV{$1} = $config{$k};
5592 $SIG{'CHLD'} = 'DEFAULT';
5594 # Have SOCK closed if the perl exec's something
5596 fcntl(SOCK, F_SETFD, FD_CLOEXEC);
5599 # Run the wrapper script by evaling it
5600 $pkg = "webmincron";
5601 $0 = $config{'webmincron_wrapper'};
5603 $main_process_id = $$;
5607 do \$miniserv::config{'webmincron_wrapper'};
5611 print STDERR "Perl cron failure : $@\n";
5616 push(@childpids, $pid);
5620 # Write out file containing last run times
5621 &write_file($config{'webmincron_last'}, \%webmincron_last);
5625 # matches_cron(cron-spec, time)
5626 # Checks if some minute or hour matches some cron spec, which can be * or a list
5630 my ($spec, $tm) = @_;
5635 foreach my $s (split(/,/, $spec)) {
5637 $s =~ /^(\d+)\-(\d+)$/ && $tm >= $1 && $tm <= $2) {
5645 # read_webmin_crons()
5646 # Read all scheduled webmin cron functions and store them in the @webmincrons
5648 sub read_webmin_crons
5651 opendir(CRONS, $config{'webmincron_dir'});
5652 print DEBUG "Reading crons from $config{'webmincron_dir'}\n";
5653 foreach my $f (readdir(CRONS)) {
5654 if ($f =~ /^(\d+)\.cron$/) {
5656 &read_file("$config{'webmincron_dir'}/$f", \%cron);
5659 foreach my $n ('module', 'func') {
5661 print STDERR "Cron $1 missing $n\n";
5665 if (!$cron{'interval'} && !$cron{'mins'} && !$cron{'special'}) {
5666 print STDERR "Cron $1 missing any time spec\n";
5669 if ($cron{'special'} eq 'hourly') {
5670 # Run every hour on the hour
5672 $cron{'hours'} = '*';
5673 $cron{'days'} = '*';
5674 $cron{'months'} = '*';
5675 $cron{'weekdays'} = '*';
5677 elsif ($cron{'special'} eq 'daily') {
5678 # Run every day at midnight
5680 $cron{'hours'} = '0';
5681 $cron{'days'} = '*';
5682 $cron{'months'} = '*';
5683 $cron{'weekdays'} = '*';
5685 elsif ($cron{'special'} eq 'monthly') {
5686 # Run every month on the 1st
5688 $cron{'hours'} = '0';
5689 $cron{'days'} = '1';
5690 $cron{'months'} = '*';
5691 $cron{'weekdays'} = '*';
5693 elsif ($cron{'special'} eq 'weekly') {
5694 # Run every month on the 1st
5696 $cron{'hours'} = '0';
5697 $cron{'days'} = '*';
5698 $cron{'months'} = '*';
5699 $cron{'weekdays'} = '0';
5701 elsif ($cron{'special'} eq 'yearly' ||
5702 $cron{'special'} eq 'annually') {
5703 # Run every year on 1st january
5705 $cron{'hours'} = '0';
5706 $cron{'days'} = '1';
5707 $cron{'months'} = '1';
5708 $cron{'weekdays'} = '*';
5710 elsif ($cron{'special'}) {
5711 print STDERR "Cron $1 invalid special time $cron{'special'}\n";
5714 if ($cron{'special'}) {
5715 delete($cron{'special'});
5718 print DEBUG "adding cron id=$cron{'id'} module=$cron{'module'} func=$cron{'func'}\n";
5719 push(@webmincrons, \%cron);
5726 # Read into the Webmin cache all files marked for pre-caching
5729 undef(%main::read_file_cache);
5730 foreach my $g (split(/\s+/, $config{'precache'})) {
5731 next if ($g eq "none");
5732 foreach my $f (glob("$config{'root'}/$g")) {
5735 $main::read_file_cache{$f} = { };
5736 &read_file($f, $main::read_file_cache{$f});
5737 $main::read_file_cache_time{$f} = $st[9];
5742 # Check if some address is valid IPv4, returns 1 if so.
5745 return $_[0] =~ /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/ &&
5746 $1 >= 0 && $1 <= 255 &&
5747 $2 >= 0 && $2 <= 255 &&
5748 $3 >= 0 && $3 <= 255 &&
5749 $4 >= 0 && $4 <= 255;
5752 # Check if some IPv6 address is properly formatted, and returns 1 if so.
5753 sub check_ip6address
5755 my @blocks = split(/:/, $_[0]);
5756 return 0 if (@blocks == 0 || @blocks > 8);
5758 my $where = index($blocks[$ib],"/");
5761 my $b = substr($blocks[$ib],0,$where);
5762 $m = substr($blocks[$ib],$where+1,length($blocks[$ib])-($where+1));
5765 return 0 if ($m <0 || $m >128);
5768 foreach $b (@blocks) {
5769 return 0 if ($b ne "" && $b !~ /^[0-9a-f]{1,4}$/i);
5770 $empty++ if ($b eq "");
5772 return 0 if ($empty > 1 && !($_[0] =~ /^::/ && $empty == 2));
5776 # network_to_address(binary)
5777 # Given a network address in binary IPv4 or v4 format, return the string form
5778 sub network_to_address
5781 if (length($addr) == 4 || !$use_ipv6) {
5782 return inet_ntoa($addr);
5785 return Socket6::inet_ntop(Socket6::AF_INET6(), $addr);
5789 # redirect_stderr_to_log()
5790 # Re-direct STDERR to error log file
5791 sub redirect_stderr_to_log
5793 if ($config{'errorlog'} ne '-') {
5794 open(STDERR, ">>$config{'errorlog'}") ||
5795 die "failed to open $config{'errorlog'} : $!";
5796 if ($config{'logperms'}) {
5797 chmod(oct($config{'logperms'}), $config{'errorlog'});
5800 select(STDERR); $| = 1; select(STDOUT);
5803 # should_gzip_file(filename)
5804 # Returns 1 if some path should be gzipped
5805 sub should_gzip_file
5808 return $path !~ /\.(gif|png|jpg|jpeg|tif|tiff)$/i;
5811 # get_expires_time(path)
5812 # Given a URL path, return the client-side expiry time in seconds
5813 sub get_expires_time
5816 foreach my $pe (@expires_paths) {
5817 if ($path =~ /$pe->[0]/i) {
5821 return $config{'expires'};