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 # Initialize SSL for this connection
419 $ssl_con = &ssl_connection_for_ip(SOCK, 0);
423 # Work out the hostname for this web server
424 $host = &get_socket_name(SOCK, 0);
426 $port = $config{'port'};
427 $acptaddr = getpeername(SOCK);
430 # Work out remote and local IPs
431 (undef, $peera, undef) = &get_address_ip($acptaddr, 0);
432 (undef, $locala) = &get_socket_ip(SOCK, 0);
434 print DEBUG "main: Starting handle_request loop pid=$$\n";
435 while(&handle_request($peera, $locala, 0)) { }
436 print DEBUG "main: Done handle_request loop pid=$$\n";
441 # Build list of sockets to listen on
442 $config{'bind'} = '' if ($config{'bind'} eq '*');
443 if ($config{'bind'}) {
444 # Listening on a specific IP
445 if (&check_ip6address($config{'bind'})) {
447 $use_ipv6 || die "Cannot bind to $config{'bind'} without IPv6";
448 push(@sockets, [ inet_pton(Socket6::AF_INET6(),$config{'bind'}),
450 Socket6::PF_INET6() ]);
454 push(@sockets, [ inet_aton($config{'bind'}),
460 # Listening on all IPs
461 push(@sockets, [ INADDR_ANY, $config{'port'}, PF_INET() ]);
464 push(@sockets, [ in6addr_any(), $config{'port'},
465 Socket6::PF_INET6() ]);
468 foreach $s (split(/\s+/, $config{'sockets'})) {
469 if ($s =~ /^(\d+)$/) {
470 # Just listen on another port on the main IP
471 push(@sockets, [ $sockets[0]->[0], $s, $sockets[0]->[2] ]);
472 if ($use_ipv6 && !$config{'bind'}) {
473 # Also listen on that port on the main IPv6 address
474 push(@sockets, [ $sockets[1]->[0], $s,
478 elsif ($s =~ /^\*:(\d+)$/) {
479 # Listening on all IPs on some port
480 push(@sockets, [ INADDR_ANY, $1,
483 push(@sockets, [ in6addr_any(), $1,
484 Socket6::PF_INET6() ]);
487 elsif ($s =~ /^(\S+):(\d+)$/) {
488 # Listen on a specific port and IP
489 my ($ip, $port) = ($1, $2);
490 if (&check_ip6address($ip)) {
491 $use_ipv6 || die "Cannot bind to $ip without IPv6";
492 push(@sockets, [ inet_pton(Socket6::AF_INET6(),
494 $port, Socket6::PF_INET6() ]);
497 push(@sockets, [ inet_aton($ip), $port,
501 elsif ($s =~ /^([0-9\.]+):\*$/ || $s =~ /^([0-9\.]+)$/) {
502 # Listen on the main port on another IPv4 address
503 push(@sockets, [ inet_aton($1), $sockets[0]->[1],
506 elsif (($s =~ /^([0-9a-f\:]+):\*$/ || $s =~ /^([0-9a-f\:]+)$/) &&
508 # Listen on the main port on another IPv6 address
509 push(@sockets, [ inet_pton(Socket6::AF_INET6(), $1),
511 Socket6::PF_INET6() ]);
515 # Open all the sockets
516 $proto = getprotobyname('tcp');
518 $tried_inaddr_any = 0;
519 for($i=0; $i<@sockets; $i++) {
521 socket($fh, $sockets[$i]->[2], SOCK_STREAM, $proto) ||
522 die "Failed to open socket family $sockets[$i]->[2] : $!";
523 setsockopt($fh, SOL_SOCKET, SO_REUSEADDR, pack("l", 1));
524 if ($sockets[$i]->[2] eq PF_INET()) {
525 $pack = pack_sockaddr_in($sockets[$i]->[1], $sockets[$i]->[0]);
528 $pack = pack_sockaddr_in6($sockets[$i]->[1], $sockets[$i]->[0]);
529 setsockopt($fh, 41, 26, pack("l", 1)); # IPv6 only
531 for($j=0; $j<5; $j++) {
532 last if (bind($fh, $pack));
536 # All attempts failed .. give up
537 if ($sockets[$i]->[0] eq INADDR_ANY ||
538 $use_ipv6 && $sockets[$i]->[0] eq in6addr_any()) {
540 "Failed to bind to port $sockets[$i]->[1] : $!");
541 $tried_inaddr_any = 1;
544 $ip = &network_to_address($sockets[$i]->[0]);
546 "Failed to bind to IP $ip port ".
547 "$sockets[$i]->[1] : $!");
551 listen($fh, SOMAXCONN);
552 push(@socketfhs, $fh);
553 $ipv6fhs{$fh} = $sockets[$i]->[2] eq PF_INET() ? 0 : 1;
556 foreach $se (@sockerrs) {
557 print STDERR $se,"\n";
560 # If all binds failed, try binding to any address
561 if (!@socketfhs && !$tried_inaddr_any) {
562 print STDERR "Falling back to listening on any address\n";
564 socket($fh, PF_INET(), SOCK_STREAM, $proto) ||
565 die "Failed to open socket : $!";
566 setsockopt($fh, SOL_SOCKET, SO_REUSEADDR, pack("l", 1));
567 if (!bind($fh, pack_sockaddr_in($sockets[0]->[1], INADDR_ANY))) {
568 print STDERR "Failed to bind to port $sockets[0]->[1] : $!\n";
571 listen($fh, SOMAXCONN);
572 push(@socketfhs, $fh);
574 elsif (!@socketfhs && $tried_inaddr_any) {
575 print STDERR "Could not listen on any ports";
579 if ($config{'listen'}) {
580 # Open the socket that allows other webmin servers to find this one
581 $proto = getprotobyname('udp');
582 if (socket(LISTEN, PF_INET(), SOCK_DGRAM, $proto)) {
583 setsockopt(LISTEN, SOL_SOCKET, SO_REUSEADDR, pack("l", 1));
584 bind(LISTEN, pack_sockaddr_in($config{'listen'}, INADDR_ANY));
585 listen(LISTEN, SOMAXCONN);
588 $config{'listen'} = 0;
592 # Split from the controlling terminal, unless configured not to
593 if (!$config{'nofork'}) {
594 if (fork()) { exit; }
596 eval { setsid(); }; # may not work on Windows
598 # Close standard file handles
599 open(STDIN, "</dev/null");
600 open(STDOUT, ">/dev/null");
601 &redirect_stderr_to_log();
602 &log_error("miniserv.pl started");
603 foreach $msg (@startup_msg) {
607 # write out the PID file
610 # Start the log-clearing process, if needed. This checks every minute
611 # to see if the log has passed its reset time, and if so clears it
612 if ($config{'logclear'}) {
613 if (!($logclearer = fork())) {
614 &close_all_sockets();
617 local $write_logtime = 0;
618 local @st = stat("$config{'logfile'}.time");
620 if ($st[9]+$config{'logtime'}*60*60 < time()){
623 unlink($config{'logfile'});
626 else { $write_logtime = 1; }
627 if ($write_logtime) {
628 open(LOGTIME, ">$config{'logfile'}.time");
629 print LOGTIME time(),"\n";
636 push(@childpids, $logclearer);
639 # Setup the logout time dbm if needed
640 if ($config{'session'}) {
641 eval "use SDBM_File";
642 dbmopen(%sessiondb, $config{'sessiondb'}, 0700);
643 eval "\$sessiondb{'1111111111'} = 'foo bar';";
645 dbmclose(%sessiondb);
646 eval "use NDBM_File";
647 dbmopen(%sessiondb, $config{'sessiondb'}, 0700);
650 delete($sessiondb{'1111111111'});
655 $SIG{'HUP'} = 'miniserv::trigger_restart';
656 $SIG{'TERM'} = 'miniserv::term_handler';
657 $SIG{'USR1'} = 'miniserv::trigger_reload';
658 $SIG{'PIPE'} = 'IGNORE';
659 local $remove_session_count = 0;
660 $need_pipes = $config{'passdelay'} || $config{'session'};
662 # wait for a new connection, or a message from a child process
664 if (@childpids <= $config{'maxconns'}) {
665 # Only accept new main socket connects when ready
667 foreach $s (@socketfhs) {
668 vec($rmask, fileno($s), 1) = 1;
672 printf STDERR "too many children (%d > %d)\n",
673 scalar(@childpids), $config{'maxconns'};
676 for($i=0; $i<@passin; $i++) {
677 vec($rmask, fileno($passin[$i]), 1) = 1;
680 vec($rmask, fileno(LISTEN), 1) = 1 if ($config{'listen'});
682 # Wait for a connection
683 local $sel = select($rmask, undef, undef, 10);
685 # Check the flag files
686 if ($config{'restartflag'} && -r $config{'restartflag'}) {
687 print STDERR "restart flag file detected\n";
688 unlink($config{'restartflag'});
691 if ($config{'reloadflag'} && -r $config{'reloadflag'}) {
692 unlink($config{'reloadflag'});
697 # Got a HUP signal while in select() .. restart now
701 # Got a USR1 signal while in select() .. re-read config
703 &reload_config_file();
705 local $time_now = time();
707 # Clean up finished processes
709 do { $pid = waitpid(-1, WNOHANG);
710 @childpids = grep { $_ != $pid } @childpids;
711 } while($pid != 0 && $pid != -1);
713 # run the unblocking procedure to check if enough time has passed to
714 # unblock hosts that heve been blocked because of password failures
716 if ($config{'blockhost_failures'}) {
718 while ($i <= $#deny) {
719 if ($blockhosttime{$deny[$i]} &&
720 $config{'blockhost_time'} != 0 &&
721 ($time_now - $blockhosttime{$deny[$i]}) >=
722 $config{'blockhost_time'}) {
723 # the host can be unblocked now
724 $hostfail{$deny[$i]} = 0;
725 splice(@deny, $i, 1);
732 # Do the same for blocked users
733 if ($config{'blockuser_failures'}) {
735 while ($i <= $#deny) {
736 if ($blockusertime{$deny[$i]} &&
737 $config{'blockuser_time'} != 0 &&
738 ($time_now - $blockusertime{$deny[$i]}) >=
739 $config{'blockuser_time'}) {
740 # the user can be unblocked now
741 $userfail{$deny[$i]} = 0;
742 splice(@denyusers, $i, 1);
749 &write_blocked_file();
752 # Check if any webmin cron jobs are ready to run
753 &execute_ready_webmin_crons();
755 if ($config{'session'} && (++$remove_session_count%50) == 0) {
756 # Remove sessions with more than 7 days of inactivity,
758 foreach $s (keys %sessiondb) {
759 local ($user, $ltime, $lip) =
760 split(/\s+/, $sessiondb{$s});
761 if ($time_now - $ltime > 7*24*60*60) {
762 &run_logout_script($s, $user);
763 &write_logout_utmp($user, $lip);
764 delete($sessiondb{$s});
767 "Timeout of session for $user");
773 if ($use_pam && $config{'pam_conv'}) {
774 # Remove PAM sessions with more than 5 minutes of inactivity
776 foreach $c (values %conversations) {
777 if ($time_now - $c->{'time'} > 5*60) {
778 &end_pam_conversation($c);
780 syslog("info", "%s", "Timeout of PAM ".
781 "session for $c->{'user'}");
787 # Don't check any sockets if there is no activity
790 # Check if any of the main sockets have received a new connection
792 foreach $s (@socketfhs) {
793 if (vec($rmask, fileno($s), 1)) {
795 $acptaddr = accept(SOCK, $s);
796 if (!$acptaddr) { next; }
797 binmode(SOCK); # turn off any Perl IO stuff
800 local ($PASSINr, $PASSINw, $PASSOUTr, $PASSOUTw);
802 ($PASSINr, $PASSINw, $PASSOUTr, $PASSOUTw) =
806 # Work out IP and port of client
807 local ($peerb, $peera, $peerp) =
808 &get_address_ip($acptaddr, $ipv6fhs{$s});
810 # Work out the local IP
811 (undef, $locala) = &get_socket_ip(SOCK, $ipv6fhs{$s});
813 # Check username of connecting user
814 $localauth_user = undef;
815 if ($config{'localauth'} && $peera eq "127.0.0.1") {
816 if (open(TCP, "/proc/net/tcp")) {
817 # Get the info direct from the kernel
818 $peerh = sprintf("%4.4X", $peerp);
821 local @t = split(/[\s:]+/, $_);
822 if ($t[1] eq '0100007F' &&
831 if (!$localauth_user) {
832 # Call lsof for the info
833 local $lsofpid = open(LSOF,
834 "$config{'localauth'} -i ".
835 "TCP\@127.0.0.1:$peerp |");
837 if (/^(\S+)\s+(\d+)\s+(\S+)/ &&
838 $2 != $$ && $2 != $lsofpid){
839 $localauth_user = $3;
846 # Work out the hostname for this web server
847 $host = &get_socket_name(SOCK, $ipv6fhs{$s});
850 "Failed to get local socket name : $!\n";
854 $port = $sockets[$sn]->[1];
856 # fork the subprocess
858 if (!($handpid = fork())) {
859 # setup signal handlers
860 $SIG{'TERM'} = 'DEFAULT';
861 $SIG{'PIPE'} = 'DEFAULT';
862 #$SIG{'CHLD'} = 'IGNORE';
863 $SIG{'HUP'} = 'IGNORE';
864 $SIG{'USR1'} = 'IGNORE';
866 # Initialize SSL for this connection
868 $ssl_con = &ssl_connection_for_ip(
873 # Close the file handle for the session DBM
874 dbmclose(%sessiondb);
876 # close useless pipes
879 close($PASSINr); close($PASSOUTw);
881 &close_all_sockets();
885 "main: Starting handle_request loop pid=$$\n";
886 while(&handle_request($peera, $locala,
888 # Loop until keepalive stops
891 "main: Done handle_request loop pid=$$\n";
894 close($PASSINw); close($PASSOUTw);
897 push(@childpids, $handpid);
899 close($PASSINw); close($PASSOUTr);
900 push(@passin, $PASSINr);
901 push(@passout, $PASSOUTw);
908 if ($config{'listen'} && vec($rmask, fileno(LISTEN), 1)) {
909 # Got UDP packet from another webmin server
911 local $from = recv(LISTEN, $rcvbuf, 1024, 0);
913 local $fromip = inet_ntoa((unpack_sockaddr_in($from))[1]);
914 local $toip = inet_ntoa((unpack_sockaddr_in(
915 getsockname(LISTEN)))[1]);
916 if ((!@deny || !&ip_match($fromip, $toip, @deny)) &&
917 (!@allow || &ip_match($fromip, $toip, @allow))) {
918 local $listenhost = &get_socket_name(LISTEN, 0);
919 send(LISTEN, "$listenhost:$config{'port'}:".
920 ($use_ssl || $config{'inetd_ssl'} ? 1 : 0).":".
921 ($config{'listenhost'} ?
922 &get_system_hostname() : ""),
928 # check for session, password-timeout and PAM messages from subprocesses
929 for($i=0; $i<@passin; $i++) {
930 if (vec($rmask, fileno($passin[$i]), 1)) {
931 # this sub-process is asking about a password
932 local $infd = $passin[$i];
933 local $outfd = $passout[$i];
934 #local $inline = <$infd>;
935 local $inline = &sysread_line($infd);
937 print DEBUG "main: inline $inline";
940 print DEBUG "main: inline EOF\n";
942 if ($inline =~ /^delay\s+(\S+)\s+(\S+)\s+(\d+)/) {
943 # Got a delay request from a subprocess.. for
944 # valid logins, there is no delay (to prevent
945 # denial of service attacks), but for invalid
946 # logins the delay increases with each failed
949 # login OK.. no delay
950 print $outfd "0 0\n";
951 $wasblocked = $hostfail{$2} ||
956 &write_blocked_file();
965 # add the host to the block list,
967 if ($config{'blockhost_failures'} &&
969 $config{'blockhost_failures'}) {
971 $blockhosttime{$2} = $time_now;
974 local $logtext = "Security alert: Host $2 blocked after $config{'blockhost_failures'} failed logins for user $1";
980 # add the user to the user block list,
982 if ($config{'blockuser_failures'} &&
984 $config{'blockuser_failures'}) {
985 push(@denyusers, $1);
986 $blockusertime{$1} = $time_now;
989 local $logtext = "Security alert: User $1 blocked after $config{'blockuser_failures'} failed logins";
995 # Lock out the user's password, if enabled
996 if ($config{'blocklock'} &&
998 $config{'blockuser_failures'}) {
999 my $lk = &lock_user_password($1);
1002 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";
1003 syslog("crit", "%s",
1009 $dl = $userdlay{$1} -
1010 int(($time_now - $userlast{$1})/50);
1011 $dl = $dl < 0 ? 0 : $dl+1;
1012 print $outfd "$dl $blocked\n";
1013 $userdlay{$1} = $dl;
1015 # Write out blocked status file
1017 &write_blocked_file();
1020 $userlast{$1} = $time_now;
1022 elsif ($inline =~ /^verify\s+(\S+)\s+(\S+)/) {
1023 # Verifying a session ID
1024 local $session_id = $1;
1025 local $notimeout = $2;
1026 local $skey = $sessiondb{$session_id} ?
1028 &hash_session_id($session_id);
1029 if (!defined($sessiondb{$skey})) {
1030 # Session doesn't exist
1031 print $outfd "0 0\n";
1034 local ($user, $ltime) =
1035 split(/\s+/, $sessiondb{$skey});
1036 local $lot = &get_logout_time($user, $session_id);
1038 $time_now - $ltime > $lot*60 &&
1040 # Session has timed out
1041 print $outfd "1 ",$time_now - $ltime,"\n";
1042 #delete($sessiondb{$skey});
1046 print $outfd "2 $user\n";
1048 $time_now - $ltime >
1050 $sessiondb{$skey} = "$user $time_now";
1055 elsif ($inline =~ /^new\s+(\S+)\s+(\S+)\s+(\S+)/) {
1056 # Creating a new session
1057 local $session_id = $1;
1060 $sessiondb{&hash_session_id($session_id)} =
1061 "$user $time_now $ip";
1063 elsif ($inline =~ /^delete\s+(\S+)/) {
1064 # Logging out a session
1065 local $session_id = $1;
1066 local $skey = $sessiondb{$session_id} ?
1068 &hash_session_id($session_id);
1069 local @sdb = split(/\s+/, $sessiondb{$skey});
1070 print $outfd $sdb[0],"\n";
1071 delete($sessiondb{$skey});
1073 elsif ($inline =~ /^pamstart\s+(\S+)\s+(\S+)\s+(.*)/) {
1074 # Starting a new PAM conversation
1075 local ($cid, $host, $user) = ($1, $2, $3);
1077 # Does this user even need PAM?
1078 local ($realuser, $canlogin) =
1079 &can_user_login($user, undef, $host);
1081 if ($canlogin == 0) {
1082 # Cannot even login!
1083 print $outfd "0 Invalid username\n";
1085 elsif ($canlogin != 2) {
1086 # Not using PAM .. so just ask for
1088 $conv = { 'user' => $realuser,
1093 print $outfd "3 Password\n";
1096 # Start the PAM conversation
1097 # sub-process, and get a question
1098 $conv = { 'user' => $realuser,
1102 local ($PAMINr, $PAMINw, $PAMOUTr,
1103 $PAMOUTw) = &allocate_pipes();
1104 local $pampid = fork();
1106 close($PAMOUTr); close($PAMINw);
1107 &pam_conversation_process(
1111 close($PAMOUTw); close($PAMINr);
1112 $conv->{'pid'} = $pampid;
1113 $conv->{'PAMOUTr'} = $PAMOUTr;
1114 $conv->{'PAMINw'} = $PAMINw;
1115 push(@childpids, $pampid);
1117 # Get the first PAM question
1118 local $pok = &recv_pam_question(
1121 &end_pam_conversation($conv);
1125 $conversations{$cid} = $conv if ($conv);
1127 elsif ($inline =~ /^pamanswer\s+(\S+)\s+(.*)/) {
1128 # A response to a PAM question
1129 local ($cid, $answer) = ($1, $2);
1130 local $conv = $conversations{$cid};
1132 # No such conversation?
1133 print $outfd "0 Bad login session\n";
1135 elsif ($conv->{'pid'}) {
1136 # Send the PAM response and get
1138 &send_pam_answer($conv, $answer);
1139 local $pok = &recv_pam_question($conv, $outfd);
1141 &end_pam_conversation($conv);
1145 # This must be the password .. try it
1146 # and send back the results
1147 local ($vu, $expired, $nonexist) =
1148 &validate_user($conv->{'user'},
1151 local $ok = $vu ? 1 : 0;
1152 print $outfd "2 $conv->{'user'} $ok $expired $notexist\n";
1153 &end_pam_conversation($conv);
1156 elsif ($inline =~ /^writesudo\s+(\S+)\s+(\d+)/) {
1157 # Store the fact that some user can sudo to root
1158 local ($user, $ok) = ($1, $2);
1159 $sudocache{$user} = $ok." ".time();
1161 elsif ($inline =~ /^readsudo\s+(\S+)/) {
1162 # Query the user sudo cache (valid for 1 minute)
1164 local ($ok, $last) =
1165 split(/\s+/, $sudocache{$user});
1166 if ($last < time()-60) {
1171 # Tell client OK or not
1172 print $outfd "$ok\n";
1175 elsif ($inline =~ /\S/) {
1176 # Unknown line from pipe?
1177 print DEBUG "main: Unknown line from pipe $inline\n";
1178 print STDERR "Unknown line from pipe $inline\n";
1182 close($infd); close($outfd);
1183 $passin[$i] = $passout[$i] = undef;
1187 @passin = grep { defined($_) } @passin;
1188 @passout = grep { defined($_) } @passout;
1191 # handle_request(remoteaddress, localaddress, ipv6-flag)
1192 # Where the real work is done
1195 local ($acptip, $localip, $ipv6) = @_;
1196 print DEBUG "handle_request: from $acptip to $localip ipv6=$ipv6\n";
1197 if ($config{'loghost'}) {
1198 $acpthost = &to_hostname($acptip);
1199 $acpthost = $acptip if (!$acpthost);
1202 $acpthost = $acptip;
1204 $datestr = &http_date(time());
1206 $ok_message = "Document follows";
1207 $logged_code = undef;
1208 $reqline = $request_uri = $page = undef;
1212 # check address against access list
1213 if (@deny && &ip_match($acptip, $localip, @deny) ||
1214 @allow && !&ip_match($acptip, $localip, @allow)) {
1215 &http_error(403, "Access denied for $acptip");
1220 # Check address with TCP-wrappers
1221 if (!hosts_ctl($config{'pam'}, STRING_UNKNOWN,
1222 $acptip, STRING_UNKNOWN)) {
1223 &http_error(403, "Access denied for $acptip by TCP wrappers");
1227 print DEBUG "handle_request: passed IP checks\n";
1229 # Compute a timeout for the start of headers, based on the number of
1230 # child processes. As this increases, we use a shorter timeout to avoid
1231 # an attacker overloading the system.
1232 local $header_timeout = 60 + ($config{'maxconns'} - @childpids) * 10;
1234 # Wait at most 60 secs for start of headers for initial requests, or
1235 # 10 minutes for kept-alive connections
1237 vec($rmask, fileno(SOCK), 1) = 1;
1238 local $to = $checked_timeout ? 10*60 : $header_timeout;
1239 local $sel = select($rmask, undef, undef, $to);
1241 if ($checked_timeout) {
1242 print DEBUG "handle_request: exiting due to timeout of $to\n";
1246 &http_error(400, "Timeout",
1247 "Waited for that $to seconds for start of headers");
1251 print DEBUG "handle_request: passed timeout check\n";
1253 # Read the HTTP request and headers
1254 local $origreqline = &read_line();
1255 ($reqline = $origreqline) =~ s/\r|\n//g;
1256 $method = $page = $request_uri = undef;
1257 print DEBUG "handle_request reqline=$reqline\n";
1258 if (!$reqline && (!$use_ssl || $checked_timeout > 1)) {
1259 # An empty request .. just close the connection
1260 print DEBUG "handle_request: rejecting empty request\n";
1263 elsif ($reqline !~ /^(\S+)\s+(.*)\s+HTTP\/1\..$/) {
1264 print DEBUG "handle_request: invalid reqline=$reqline\n";
1266 # This could be an http request when it should be https
1268 local $url = $config{'musthost'} ?
1269 "https://$config{'musthost'}:$port/" :
1270 "https://$host:$port/";
1271 if ($config{'ssl_redirect'}) {
1272 # Just re-direct to the correct URL
1273 sleep(1); # Give browser a change to finish
1274 # sending its request
1275 &write_data("HTTP/1.0 302 Moved Temporarily\r\n");
1276 &write_data("Date: $datestr\r\n");
1277 &write_data("Server: $config{'server'}\r\n");
1278 &write_data("Location: $url\r\n");
1279 &write_keep_alive(0);
1280 &write_data("\r\n");
1284 # Tell user the correct URL
1285 &http_error(200, "Bad Request", "This web server is running in SSL mode. Try the URL <a href='$url'>$url</a> instead.<br>");
1288 elsif (ord(substr($reqline, 0, 1)) == 128 && !$use_ssl) {
1289 # This could be an https request when it should be http ..
1290 # need to fake a HTTP response
1293 eval "Net::SSLeay::SSLeay_add_ssl_algorithms()";
1294 eval "Net::SSLeay::load_error_strings()";
1295 $ssl_ctx = Net::SSLeay::CTX_new();
1296 Net::SSLeay::CTX_use_RSAPrivateKey_file(
1297 $ssl_ctx, $config{'keyfile'},
1298 &Net::SSLeay::FILETYPE_PEM);
1299 Net::SSLeay::CTX_use_certificate_file(
1301 $config{'certfile'} || $config{'keyfile'},
1302 &Net::SSLeay::FILETYPE_PEM);
1303 $ssl_con = Net::SSLeay::new($ssl_ctx);
1307 select(SSLw); $| = 1; select(STDOUT);
1308 print SSLw $origreqline;
1310 while(sysread(SOCK, $buf, 1) > 0) {
1317 Net::SSLeay::set_wfd($ssl_con, fileno(SOCK));
1318 Net::SSLeay::set_rfd($ssl_con, fileno(SSLr));
1319 Net::SSLeay::accept($ssl_con) || die "accept() failed";
1321 local $url = $config{'musthost'} ?
1322 "https://$config{'musthost'}:$port/" :
1323 "https://$host:$port/";
1324 if ($config{'ssl_redirect'}) {
1325 # Just re-direct to the correct URL
1326 sleep(1); # Give browser a change to
1327 # finish sending its request
1328 &write_data("HTTP/1.0 302 Moved Temporarily\r\n");
1329 &write_data("Date: $datestr\r\n");
1330 &write_data("Server: $config{'server'}\r\n");
1331 &write_data("Location: $url\r\n");
1332 &write_keep_alive(0);
1333 &write_data("\r\n");
1337 # Tell user the correct URL
1338 &http_error(200, "Bad Request", "This web server is not running in SSL mode. Try the URL <a href='$url'>$url</a> instead.<br>");
1342 &http_error(400, "Bad Request");
1346 &http_error(400, "Bad Request");
1350 $request_uri = $page = $2;
1354 ($headline = &read_line()) =~ s/\r|\n//g;
1355 last if ($headline eq "");
1356 print DEBUG "handle_request: got headline $headline\n";
1357 if ($headline =~ /^(\S+):\s*(.*)$/) {
1358 $header{$lastheader = lc($1)} = $2;
1360 elsif ($headline =~ /^\s+(.*)$/) {
1361 $header{$lastheader} .= $headline;
1364 &http_error(400, "Bad Header $headline");
1367 if (defined($header{'host'})) {
1368 if ($header{'host'} =~ /^([^:]+):([0-9]+)$/) {
1369 ($host, $port) = ($1, $2);
1372 $host = $header{'host'};
1374 if ($config{'musthost'} && $host ne $config{'musthost'}) {
1375 # Disallowed hostname used
1376 &http_error(400, "Invalid HTTP hostname");
1380 if ($page =~ /^([^\?]+)\?(.*)$/) {
1381 # There is some query string information
1384 print DEBUG "handle_request: querystring=$querystring\n";
1385 if ($querystring !~ /=/) {
1386 $queryargs = $querystring;
1387 $queryargs =~ s/\+/ /g;
1388 $queryargs =~ s/%(..)/pack("c",hex($1))/ge;
1392 # Parse query-string parameters
1393 local @in = split(/\&/, $querystring);
1395 local ($k, $v) = split(/=/, $i, 2);
1396 $k =~ s/\+/ /g; $k =~ s/%(..)/pack("c",hex($1))/ge;
1397 $v =~ s/\+/ /g; $v =~ s/%(..)/pack("c",hex($1))/ge;
1402 $posted_data = undef;
1403 if ($method eq 'POST' &&
1404 $header{'content-type'} eq 'application/x-www-form-urlencoded') {
1405 # Read in posted query string information, up the configured maximum
1406 # post request length
1407 $clen = $header{"content-length"};
1408 $clen_read = $clen > $config{'max_post'} ? $config{'max_post'} : $clen;
1409 while(length($posted_data) < $clen_read) {
1410 $buf = &read_data($clen_read - length($posted_data));
1411 if (!length($buf)) {
1412 &http_error(500, "Failed to read POST request");
1414 chomp($posted_data);
1415 $posted_data =~ s/\015$//mg;
1416 $posted_data .= $buf;
1418 print DEBUG "clen_read=$clen_read clen=$clen posted_data=",length($posted_data),"\n";
1419 if ($clen_read != $clen && length($posted_data) > $clen) {
1420 # If the client sent more data than we asked for, chop the
1422 $posted_data = substr($posted_data, 0, $clen);
1424 if (length($posted_data) > $clen) {
1425 # When the client sent too much, delay so that it gets headers
1428 if ($header{'user-agent'} =~ /MSIE/ &&
1429 $header{'user-agent'} !~ /Opera/i) {
1430 # MSIE includes an extra newline in the data
1431 $posted_data =~ s/\r|\n//g;
1433 local @in = split(/\&/, $posted_data);
1435 local ($k, $v) = split(/=/, $i, 2);
1437 $k =~ s/\+/ /g; $k =~ s/%(..)/pack("c",hex($1))/ge;
1438 $v =~ s/\+/ /g; $v =~ s/%(..)/pack("c",hex($1))/ge;
1441 print DEBUG "handle_request: posted_data=$posted_data\n";
1444 # work out accepted encodings
1445 %acceptenc = map { $_, 1 } split(/,/, $header{'accept-encoding'});
1447 # replace %XX sequences in page
1448 $page =~ s/%(..)/pack("c",hex($1))/ge;
1450 # Check if the browser's user agent indicates a mobile device
1451 $mobile_device = &is_mobile_useragent($header{'user-agent'});
1453 # Check if Host: header is for a mobile URL
1454 foreach my $m (@mobile_prefixes) {
1455 if ($header{'host'} =~ /^\Q$m\E/i) {
1460 # check for the logout flag file, and if existant deny authentication
1461 if ($config{'logout'} && -r $config{'logout'}.$in{'miniserv_logout_id'}) {
1462 print DEBUG "handle_request: logout flag set\n";
1463 $deny_authentication++;
1464 open(LOGOUT, $config{'logout'}.$in{'miniserv_logout_id'});
1465 chop($count = <LOGOUT>);
1469 open(LOGOUT, ">$config{'logout'}$in{'miniserv_logout_id'}");
1470 print LOGOUT "$count\n";
1474 unlink($config{'logout'}.$in{'miniserv_logout_id'});
1478 # check for any redirect for the requested URL
1479 foreach my $pfx (@strip_prefix) {
1480 my $l = length($pfx);
1481 if(length($page) >= $l &&
1482 substr($page,0,$l) eq $pfx) {
1483 $page=substr($page,$l);
1487 $simple = &simplify_path($page, $bogus);
1489 $rpath .= "&".$querystring if (defined($querystring));
1490 $redir = $redirect{$rpath};
1491 if (defined($redir)) {
1492 print DEBUG "handle_request: redir=$redir\n";
1493 &write_data("HTTP/1.0 302 Moved Temporarily\r\n");
1494 &write_data("Date: $datestr\r\n");
1495 &write_data("Server: $config{'server'}\r\n");
1496 local $ssl = $use_ssl || $config{'inetd_ssl'};
1497 $portstr = $port == 80 && !$ssl ? "" :
1498 $port == 443 && $ssl ? "" : ":$port";
1499 $prot = $ssl ? "https" : "http";
1500 &write_data("Location: $prot://$host$portstr$redir\r\n");
1501 &write_keep_alive(0);
1502 &write_data("\r\n");
1506 # Check for a DAV request
1508 foreach my $d (@davpaths) {
1509 if ($simple eq $d || $simple =~ /^\Q$d\E\//) {
1514 if (!$davpath && ($method eq "SEARCH" || $method eq "PUT")) {
1515 &http_error(400, "Bad Request method $method");
1518 # Check for password if needed
1519 if ($config{'userfile'}) {
1520 print DEBUG "handle_request: Need authentication\n";
1524 # Session authentication is never used for connections by
1525 # another webmin server, or for specified pages, or for DAV, or XMLRPC,
1526 # or mobile browsers if requested.
1527 if ($header{'user-agent'} =~ /webmin/i ||
1528 $header{'user-agent'} =~ /$config{'agents_nosession'}/i ||
1529 $sessiononly{$simple} || $davpath ||
1530 $simple eq "/xmlrpc.cgi" ||
1531 $acptip eq $config{'host_nosession'} ||
1532 $mobile_device && $config{'mobile_nosession'}) {
1533 print DEBUG "handle_request: Forcing HTTP authentication\n";
1534 $config{'session'} = 0;
1537 # Check for SSL authentication
1538 if ($use_ssl && $verified_client) {
1539 $peername = Net::SSLeay::X509_NAME_oneline(
1540 Net::SSLeay::X509_get_subject_name(
1541 Net::SSLeay::get_peer_certificate(
1543 $u = &find_user_by_cert($peername);
1548 if ($use_syslog && !$validated) {
1549 syslog("crit", "%s",
1550 "Unknown SSL certificate $peername");
1554 if (!$validated && !$deny_authentication) {
1555 # check for IP-based authentication
1557 foreach $a (keys %ipaccess) {
1558 if ($acptip eq $a) {
1559 # It does! Auth as the user
1561 $baseauthuser = $authuser =
1567 # Check for normal HTTP authentication
1568 if (!$validated && !$deny_authentication && !$config{'session'} &&
1569 $header{authorization} =~ /^basic\s+(\S+)$/i) {
1570 # authorization given..
1571 ($authuser, $authpass) = split(/:/, &b64decode($1), 2);
1572 print DEBUG "handle_request: doing basic auth check authuser=$authuser authpass=$authpass\n";
1573 local ($vu, $expired, $nonexist) =
1574 &validate_user($authuser, $authpass, $host);
1575 print DEBUG "handle_request: vu=$vu expired=$expired nonexist=$nonexist\n";
1576 if ($vu && (!$expired || $config{'passwd_mode'} == 1)) {
1583 if ($use_syslog && !$validated) {
1584 syslog("crit", "%s",
1585 ($nonexist ? "Non-existent" :
1586 $expired ? "Expired" : "Invalid").
1587 " login as $authuser from $acpthost");
1589 if ($authuser =~ /\r|\n|\s/) {
1590 &http_error(500, "Invalid username",
1591 "Username contains invalid characters");
1593 if ($authpass =~ /\r|\n/) {
1594 &http_error(500, "Invalid password",
1595 "Password contains invalid characters");
1598 if ($config{'passdelay'} && !$config{'inetd'} && $authuser) {
1599 # check with main process for delay
1600 print DEBUG "handle_request: about to ask for password delay\n";
1601 print $PASSINw "delay $authuser $acptip $validated\n";
1602 <$PASSOUTr> =~ /(\d+) (\d+)/;
1604 print DEBUG "handle_request: password delay $1 $2\n";
1609 # Check for a visit to the special session login page
1610 if ($config{'session'} && !$deny_authentication &&
1611 $page eq $config{'session_login'}) {
1612 if ($in{'logout'} && $header{'cookie'} =~ /(^|\s)$sidname=([a-f0-9]+)/) {
1613 # Logout clicked .. remove the session
1615 print $PASSINw "delete $sid\n";
1616 local $louser = <$PASSOUTr>;
1619 $already_session_id = undef;
1620 $authuser = $baseauthuser = undef;
1623 syslog("info", "%s", "Logout by $louser from $acpthost");
1625 &run_logout_script($louser, $sid,
1627 &write_logout_utmp($louser, $actphost);
1632 if ($in{'user'} =~ /\r|\n|\s/) {
1633 &http_error(500, "Invalid username",
1634 "Username contains invalid characters");
1636 if ($in{'pass'} =~ /\r|\n/) {
1637 &http_error(500, "Invalid password",
1638 "Password contains invalid characters");
1641 local ($vu, $expired, $nonexist) =
1642 &validate_user($in{'user'}, $in{'pass'}, $host);
1643 local $hrv = &handle_login(
1644 $vu || $in{'user'}, $vu ? 1 : 0,
1645 $expired, $nonexist, $in{'pass'},
1646 $in{'notestingcookie'});
1647 return $hrv if (defined($hrv));
1651 # Check for a visit to the special PAM login page
1652 if ($config{'session'} && !$deny_authentication &&
1653 $use_pam && $config{'pam_conv'} && $page eq $config{'pam_login'} &&
1655 # A question has been entered .. submit it to the main process
1656 print DEBUG "handle_request: Got call to $page ($in{'cid'})\n";
1657 print DEBUG "handle_request: For PAM, authuser=$authuser\n";
1658 if ($in{'answer'} =~ /\r|\n/ || $in{'cid'} =~ /\r|\n|\s/) {
1659 &http_error(500, "Invalid response",
1660 "Response contains invalid characters");
1664 # Start of a new conversation - answer must be username
1665 $cid = &generate_random_id($in{'answer'});
1666 print $PASSINw "pamstart $cid $host $in{'answer'}\n";
1669 # A response to a previous question
1671 print $PASSINw "pamanswer $cid $in{'answer'}\n";
1674 # Read back the response, and the next question (if any)
1675 local $line = <$PASSOUTr>;
1676 $line =~ s/\r|\n//g;
1677 local ($rv, $question) = split(/\s+/, $line, 2);
1680 local $hrv = &handle_login(
1681 !$in{'cid'} && $in{'answer'} ? $in{'answer'}
1684 return $hrv if (defined($hrv));
1686 elsif ($rv == 1 || $rv == 3) {
1687 # Another question .. force use of PAM CGI
1690 $querystring .= "&cid=$cid&question=".
1692 $querystring .= "&password=1" if ($rv == 3);
1694 $page = $config{'pam_login'};
1695 $miniserv_internal = 1;
1699 # Got back a final ok or failure
1700 local ($user, $ok, $expired, $nonexist) =
1701 split(/\s+/, $question);
1702 local $hrv = &handle_login(
1703 $user, $ok, $expired, $nonexist, undef,
1704 $in{'notestingcookie'});
1705 return $hrv if (defined($hrv));
1708 # A message from PAM .. tell the user
1711 $querystring .= "&cid=$cid&message=".
1714 $page = $config{'pam_login'};
1715 $miniserv_internal = 1;
1720 # Check for a visit to the special password change page
1721 if ($config{'session'} && !$deny_authentication &&
1722 $page eq $config{'password_change'} && !$validated) {
1723 # Just let this slide ..
1725 $miniserv_internal = 3;
1728 # Check for an existing session
1729 if ($config{'session'} && !$validated) {
1730 if ($already_session_id) {
1731 $session_id = $already_session_id;
1732 $authuser = $already_authuser;
1735 elsif (!$deny_authentication &&
1736 $header{'cookie'} =~ /(^|\s)$sidname=([a-f0-9]+)/) {
1737 # Try all session cookies
1738 local $cookie = $header{'cookie'};
1739 while($cookie =~ s/(^|\s)$sidname=([a-f0-9]+)//) {
1742 $in{'webmin_notimeout'} ? 1 : 0;
1743 print $PASSINw "verify $session_id $notimeout\n";
1744 <$PASSOUTr> =~ /(\d+)\s+(\S+)/;
1746 # Valid session continuation
1749 $already_authuser = $authuser;
1758 # Invalid session ID .. don't set
1765 # Check for local authentication
1766 if ($localauth_user && !$header{'x-forwarded-for'} && !$header{'via'}) {
1767 my $luser = &get_user_details($localauth_user);
1769 # Local user exists in webmin users file
1771 $authuser = $localauth_user;
1774 # Check if local user is allowed by unixauth
1775 local @can = &can_user_login($localauth_user,
1779 $authuser = $localauth_user;
1782 $localauth_user = undef;
1788 # Check if this path allows anonymous access
1790 foreach $a (keys %anonymous) {
1791 if (substr($simple, 0, length($a)) eq $a) {
1792 # It does! Auth as the user, if IP access
1793 # control allows him.
1794 if (&check_user_ip($anonymous{$a}) &&
1795 &check_user_time($anonymous{$a})) {
1797 $baseauthuser = $authuser =
1805 # Check if this path allows unauthenticated access
1806 local ($u, $unauth);
1807 foreach $u (@unauth) {
1808 $unauth++ if ($simple =~ /$u/);
1810 if (!$bogus && $unauth) {
1811 # Unauthenticated directory or file request - approve it
1813 $baseauthuser = $authuser = undef;
1818 if ($blocked == 0) {
1819 # No password given.. ask
1820 if ($config{'pam_conv'} && $use_pam) {
1821 # Force CGI for PAM question, starting with
1822 # the username which is always needed
1825 $querystring .= "&initial=1&question=".
1826 &urlize("Username");
1827 $querystring .= "&failed=$failed_user" if ($failed_user);
1828 $querystring .= "&timed_out=$timed_out" if ($timed_out);
1830 $page = $config{'pam_login'};
1831 $miniserv_internal = 1;
1834 elsif ($config{'session'}) {
1835 # Force CGI for session login
1838 $querystring .= "&logout=1&page=/";
1841 # Re-direct to current module only
1842 local $rpage = $request_uri;
1843 if (!$config{'loginkeeppage'}) {
1844 $rpage =~ s/\?.*$//;
1845 $rpage =~ s/[^\/]+$//
1847 $querystring = "page=".&urlize($rpage);
1850 $querystring .= "&failed=$failed_user" if ($failed_user);
1851 $querystring .= "&timed_out=$timed_out" if ($timed_out);
1853 $page = $config{'session_login'};
1854 $miniserv_internal = 1;
1858 # Ask for login with HTTP authentication
1859 &write_data("HTTP/1.0 401 Unauthorized\r\n");
1860 &write_data("Date: $datestr\r\n");
1861 &write_data("Server: $config{'server'}\r\n");
1862 &write_data("WWW-authenticate: Basic ".
1863 "realm=\"$config{'realm'}\"\r\n");
1864 &write_keep_alive(0);
1865 &write_data("Content-type: text/html\r\n");
1866 &write_data("\r\n");
1867 &reset_byte_count();
1868 &write_data("<html>\n");
1869 &write_data("<head><title>Unauthorized</title></head>\n");
1870 &write_data("<body><h1>Unauthorized</h1>\n");
1871 &write_data("A password is required to access this\n");
1872 &write_data("web server. Please try again. <p>\n");
1873 &write_data("</body></html>\n");
1874 &log_request($acpthost, undef, $reqline, 401, &byte_count());
1878 elsif ($blocked == 1) {
1879 # when the host has been blocked, give it an error
1880 &http_error(403, "Access denied for $acptip. The host ".
1881 "has been blocked because of too ".
1882 "many authentication failures.");
1884 elsif ($blocked == 2) {
1885 # when the user has been blocked, give it an error
1886 &http_error(403, "Access denied. The user ".
1887 "has been blocked because of too ".
1888 "many authentication failures.");
1892 # Get the real Webmin username
1893 local @can = &can_user_login($authuser, undef, $host);
1894 $baseauthuser = $can[3] || $authuser;
1896 if ($config{'remoteuser'} && !$< && $validated) {
1897 # Switch to the UID of the remote user (if he exists)
1898 local @u = getpwnam($authuser);
1899 if (@u && $< != $u[2]) {
1900 $( = $u[3]; $) = "$u[3] $u[3]";
1901 ($>, $<) = ($u[2], $u[2]);
1904 &http_error(500, "Unix user $authuser does not exist");
1910 # Check per-user IP access control
1911 if (!&check_user_ip($baseauthuser)) {
1912 &http_error(403, "Access denied for $acptip for $baseauthuser");
1916 # Check per-user allowed times
1917 if (!&check_user_time($baseauthuser)) {
1918 &http_error(403, "Access denied at the current time");
1922 $uinfo = &get_user_details($baseauthuser);
1924 # Validate the path, and convert to canonical form
1926 $simple = &simplify_path($page, $bogus);
1927 print DEBUG "handle_request: page=$page simple=$simple\n";
1929 &http_error(400, "Invalid path");
1932 # Check for a DAV request
1934 return &handle_dav_request($davpath);
1937 # Work out the active theme(s)
1938 local $preroots = $mobile_device && defined($config{'mobile_preroot'}) ?
1939 $config{'mobile_preroot'} :
1940 $authuser && defined($config{'preroot_'.$authuser}) ?
1941 $config{'preroot_'.$authuser} :
1942 $uinfo && defined($uinfo->{'preroot'}) ?
1943 $uinfo->{'preroot'} :
1945 local @preroots = reverse(split(/\s+/, $preroots));
1947 # Canonicalize the directories
1948 foreach my $preroot (@preroots) {
1949 # Always under the current webmin root
1950 $preroot =~ s/^.*\///g;
1951 $preroot = $roots[0].'/'.$preroot;
1954 # Look in the theme root directories first
1955 local ($full, @stfull);
1957 foreach my $preroot (@preroots) {
1960 $full = $preroot.$sofar;
1961 $scriptname = $simple;
1962 foreach $b (split(/\//, $simple)) {
1963 if ($b ne "") { $sofar .= "/$b"; }
1964 $full = $preroot.$sofar;
1965 @stfull = stat($full);
1966 if (!@stfull) { undef($full); last; }
1968 # Check if this is a directory
1970 # It is.. go on parsing
1978 # Check if this is a CGI program
1979 if (&get_type($full) eq "internal/cgi") {
1980 $pathinfo = substr($simple, length($sofar));
1981 $pathinfo .= "/" if ($page =~ /\/$/);
1982 $scriptname = $sofar;
1987 # Don't stop at a directory unless this is the last theme, which
1988 # is the 'real' one that provides the .cgi scripts
1989 if ($is_directory && $preroot ne $preroots[$#preroots]) {
1996 $cgi_pwd = $roots[0];
1998 elsif ($is_directory) {
1999 $cgi_pwd = "$roots[0]$sofar";
2002 "$roots[0]$sofar" =~ /^(.*\/)[^\/]+$/;
2005 $foundroot = $preroot;
2006 if ($is_directory) {
2007 # Check for index files in the directory
2009 foreach $idx (split(/\s+/, $config{"index_docs"})) {
2010 $idxfull = "$full/$idx";
2011 local @stidxfull = stat($idxfull);
2012 if (-r _ && !-d _) {
2014 @stfull = @stidxfull;
2017 if ($scriptname ne "/");
2022 @stfull = stat($full) if (!$foundidx);
2025 last if ($foundroot);
2027 print DEBUG "handle_request: initial full=$full\n";
2029 # Look in the real root directories, stopping when we find a file or directory
2030 if (!$full || $is_directory) {
2031 ROOT: foreach $root (@roots) {
2033 $full = $root.$sofar;
2034 $scriptname = $simple;
2035 foreach $b ($simple eq "/" ? ( "" ) : split(/\//, $simple)) {
2036 if ($b ne "") { $sofar .= "/$b"; }
2037 $full = $root.$sofar;
2038 @stfull = stat($full);
2043 # Check if this is a directory
2045 # It is.. go on parsing
2049 # Check if this is a CGI program
2050 if (&get_type($full) eq "internal/cgi") {
2051 $pathinfo = substr($simple, length($sofar));
2052 $pathinfo .= "/" if ($page =~ /\/$/);
2053 $scriptname = $sofar;
2058 # Run CGI in the same directory as whatever file
2060 $full =~ /^(.*\/)[^\/]+$/; $cgi_pwd = $1;
2069 if (!@stfull) { &http_error(404, "File not found"); }
2071 print DEBUG "handle_request: full=$full\n";
2072 @stfull = stat($full) if (!@stfull);
2074 # check filename against denyfile regexp
2075 local $denyfile = $config{'denyfile'};
2076 if ($denyfile && $full =~ /$denyfile/) {
2077 &http_error(403, "Access denied to $page");
2081 # Reached the end of the path OK.. see what we've got
2083 # See if the URL ends with a / as it should
2084 print DEBUG "handle_request: found a directory\n";
2085 if ($page !~ /\/$/) {
2086 # It doesn't.. redirect
2087 &write_data("HTTP/1.0 302 Moved Temporarily\r\n");
2088 $ssl = $use_ssl || $config{'inetd_ssl'};
2089 $portstr = $port == 80 && !$ssl ? "" :
2090 $port == 443 && $ssl ? "" : ":$port";
2091 &write_data("Date: $datestr\r\n");
2092 &write_data("Server: $config{server}\r\n");
2093 $prot = $ssl ? "https" : "http";
2094 &write_data("Location: $prot://$host$portstr$page/\r\n");
2095 &write_keep_alive(0);
2096 &write_data("\r\n");
2097 &log_request($acpthost, $authuser, $reqline, 302, 0);
2100 # A directory.. check for index files
2102 foreach $idx (split(/\s+/, $config{"index_docs"})) {
2103 $idxfull = "$full/$idx";
2104 @stidxfull = stat($idxfull);
2105 if (-r _ && !-d _) {
2108 @stfull = @stidxfull;
2109 $scriptname .= "/" if ($scriptname ne "/");
2114 @stfull = stat($full) if (!$foundidx);
2117 # This is definately a directory.. list it
2118 print DEBUG "handle_request: listing directory\n";
2119 local $resp = "HTTP/1.0 $ok_code $ok_message\r\n".
2120 "Date: $datestr\r\n".
2121 "Server: $config{server}\r\n".
2122 "Content-type: text/html\r\n";
2124 &write_keep_alive(0);
2125 &write_data("\r\n");
2126 &reset_byte_count();
2127 &write_data("<h1>Index of $simple</h1>\n");
2128 &write_data("<pre>\n");
2129 &write_data(sprintf "%-35.35s %-20.20s %-10.10s\n",
2130 "Name", "Last Modified", "Size");
2131 &write_data("<hr>\n");
2132 opendir(DIR, $full);
2133 while($df = readdir(DIR)) {
2134 if ($df =~ /^\./) { next; }
2135 $fulldf = $full eq "/" ? $full.$df : $full."/".$df;
2136 (@stbuf = stat($fulldf)) || next;
2137 if (-d _) { $df .= "/"; }
2138 @tm = localtime($stbuf[9]);
2139 $fdate = sprintf "%2.2d/%2.2d/%4.4d %2.2d:%2.2d:%2.2d",
2140 $tm[3],$tm[4]+1,$tm[5]+1900,
2141 $tm[0],$tm[1],$tm[2];
2142 $len = length($df); $rest = " "x(35-$len);
2144 "<a href=\"%s\">%-${len}.${len}s</a>$rest %-20.20s %-10.10s\n",
2145 $df, $df, $fdate, $stbuf[7]);
2148 &log_request($acpthost, $authuser, $reqline, $ok_code, &byte_count());
2152 # CGI or normal file
2154 if (&get_type($full) eq "internal/cgi" && $validated != 4) {
2155 # A CGI program to execute
2156 print DEBUG "handle_request: executing CGI\n";
2157 $envtz = $ENV{"TZ"};
2158 $envuser = $ENV{"USER"};
2159 $envpath = $ENV{"PATH"};
2160 $envlang = $ENV{"LANG"};
2161 $envroot = $ENV{"SystemRoot"};
2162 $envperllib = $ENV{'PERLLIB'};
2163 foreach my $k (keys %ENV) {
2166 $ENV{"PATH"} = $envpath if ($envpath);
2167 $ENV{"TZ"} = $envtz if ($envtz);
2168 $ENV{"USER"} = $envuser if ($envuser);
2169 $ENV{"OLD_LANG"} = $envlang if ($envlang);
2170 $ENV{"SystemRoot"} = $envroot if ($envroot);
2171 $ENV{'PERLLIB'} = $envperllib if ($envperllib);
2172 $ENV{"HOME"} = $user_homedir;
2173 $ENV{"SERVER_SOFTWARE"} = $config{"server"};
2174 $ENV{"SERVER_NAME"} = $host;
2175 $ENV{"SERVER_ADMIN"} = $config{"email"};
2176 $ENV{"SERVER_ROOT"} = $roots[0];
2177 $ENV{"SERVER_REALROOT"} = $realroot;
2178 $ENV{"SERVER_PORT"} = $port;
2179 $ENV{"REMOTE_HOST"} = $acpthost;
2180 $ENV{"REMOTE_ADDR"} = $acptip;
2181 $ENV{"REMOTE_ADDR_PROTOCOL"} = $ipv6 ? 6 : 4;
2182 $ENV{"REMOTE_USER"} = $authuser;
2183 $ENV{"BASE_REMOTE_USER"} = $authuser ne $baseauthuser ?
2184 $baseauthuser : undef;
2185 $ENV{"REMOTE_PASS"} = $authpass if (defined($authpass) &&
2186 $config{'pass_password'});
2187 if ($uinfo && $uinfo->{'proto'}) {
2188 $ENV{"REMOTE_USER_PROTO"} = $uinfo->{'proto'};
2189 $ENV{"REMOTE_USER_ID"} = $uinfo->{'id'};
2191 print DEBUG "REMOTE_USER = ",$ENV{"REMOTE_USER"},"\n";
2192 print DEBUG "BASE_REMOTE_USER = ",$ENV{"BASE_REMOTE_USER"},"\n";
2193 print DEBUG "proto=$uinfo->{'proto'} id=$uinfo->{'id'}\n" if ($uinfo);
2194 $ENV{"SSL_USER"} = $peername if ($validated == 2);
2195 $ENV{"ANONYMOUS_USER"} = "1" if ($validated == 3 || $validated == 4);
2196 $ENV{"DOCUMENT_ROOT"} = $roots[0];
2197 $ENV{"DOCUMENT_REALROOT"} = $realroot;
2198 $ENV{"GATEWAY_INTERFACE"} = "CGI/1.1";
2199 $ENV{"SERVER_PROTOCOL"} = "HTTP/1.0";
2200 $ENV{"REQUEST_METHOD"} = $method;
2201 $ENV{"SCRIPT_NAME"} = $scriptname;
2202 $ENV{"SCRIPT_FILENAME"} = $full;
2203 $ENV{"REQUEST_URI"} = $request_uri;
2204 $ENV{"PATH_INFO"} = $pathinfo;
2206 $ENV{"PATH_TRANSLATED"} = "$roots[0]$pathinfo";
2207 $ENV{"PATH_REALTRANSLATED"} = "$realroot$pathinfo";
2209 $ENV{"QUERY_STRING"} = $querystring;
2210 $ENV{"MINISERV_CONFIG"} = $config_file;
2211 $ENV{"HTTPS"} = "ON" if ($use_ssl || $config{'inetd_ssl'});
2212 $ENV{"MINISERV_PID"} = $miniserv_main_pid;
2213 $ENV{"SESSION_ID"} = $session_id if ($session_id);
2214 $ENV{"LOCAL_USER"} = $localauth_user if ($localauth_user);
2215 $ENV{"MINISERV_INTERNAL"} = $miniserv_internal if ($miniserv_internal);
2216 if (defined($header{"content-length"})) {
2217 $ENV{"CONTENT_LENGTH"} = $header{"content-length"};
2219 if (defined($header{"content-type"})) {
2220 $ENV{"CONTENT_TYPE"} = $header{"content-type"};
2222 foreach $h (keys %header) {
2223 ($hname = $h) =~ tr/a-z/A-Z/;
2225 $ENV{"HTTP_$hname"} = $header{$h};
2227 $ENV{"PWD"} = $cgi_pwd;
2228 foreach $k (keys %config) {
2229 if ($k =~ /^env_(\S+)$/) {
2230 $ENV{$1} = $config{$k};
2233 delete($ENV{'HTTP_AUTHORIZATION'});
2234 $ENV{'HTTP_COOKIE'} =~ s/;?\s*$sidname=([a-f0-9]+)//;
2235 $ENV{'MOBILE_DEVICE'} = 1 if ($mobile_device);
2237 # Check if the CGI can be handled internally
2239 local $first = <CGI>;
2241 $first =~ s/[#!\r\n]//g;
2242 $nph_script = ($full =~ /\/nph-([^\/]+)$/);
2244 if (!$config{'forkcgis'} &&
2245 ($first eq $perl_path || $first eq $linked_perl_path) &&
2247 $config{'internalcgis'}) {
2248 # setup environment for eval
2250 @ARGV = split(/\s+/, $queryargs);
2253 # Already read the post input
2254 $postinput = $posted_data;
2256 $clen = $header{"content-length"};
2257 $SIG{'CHLD'} = 'DEFAULT';
2259 # Have SOCK closed if the perl exec's something
2261 fcntl(SOCK, F_SETFD, FD_CLOEXEC);
2265 if ($config{'log'}) {
2266 open(MINISERVLOG, ">>$config{'logfile'}");
2267 if ($config{'logperms'}) {
2268 chmod(oct($config{'logperms'}),
2269 $config{'logfile'});
2272 chmod(0600, $config{'logfile'});
2275 $doing_cgi_eval = 1;
2276 $main_process_id = $$;
2278 if ($full =~ /^\Q$foundroot\E\/([^\/]+)\//) {
2279 # Eval in package from Webmin module name
2281 $pkg =~ s/[^A-Za-z0-9]/_/g;
2286 tie(*STDOUT, 'miniserv');
2287 tie(*STDIN, 'miniserv');
2288 do \$miniserv::full;
2291 $doing_cgi_eval = 0;
2294 &http_error(500, "Perl execution failed",
2295 $config{'noshowstderr'} ? undef : $@);
2297 elsif (!$doneheaders && !$nph_script) {
2298 &http_error(500, "Missing Headers");
2305 # fork the process that actually executes the CGI
2306 pipe(CGIINr, CGIINw);
2307 pipe(CGIOUTr, CGIOUTw);
2308 pipe(CGIERRr, CGIERRw);
2309 if (!($cgipid = fork())) {
2310 @execargs = ( $full, split(/\s+/, $queryargs) );
2313 open(STDIN, "<&CGIINr");
2314 open(STDOUT, ">&CGIOUTw");
2315 open(STDERR, ">&CGIERRw");
2316 close(CGIINw); close(CGIOUTr); close(CGIERRr);
2318 die "Failed to exec $full : $!\n";
2321 close(CGIINr); close(CGIOUTw); close(CGIERRw);
2324 # write CGI input to a temp file
2325 $infile = "$config{'tempbase'}.$$";
2326 open(CGIINw, ">$infile");
2327 # NOT binary mode, as CGIs don't read in it!
2332 # already read the posted data
2333 print CGIINw $posted_data;
2335 $clen = $header{"content-length"};
2336 if ($method eq "POST" && $clen_read < $clen) {
2337 $SIG{'PIPE'} = 'IGNORE';
2339 while($got < $clen) {
2340 $buf = &read_data($clen-$got);
2341 if (!length($buf)) {
2342 kill('TERM', $cgipid);
2343 unlink($infile) if ($infile);
2344 &http_error(500, "Failed to read ".
2347 $got += length($buf);
2348 local ($wrote) = (print CGIINw $buf);
2351 # If the CGI terminated early, we still need to read
2352 # from the browser and throw away
2353 while($got < $clen) {
2354 $buf = &read_data($clen-$got);
2355 if (!length($buf)) {
2356 kill('TERM', $cgipid);
2357 unlink($infile) if ($infile);
2358 &http_error(500, "Failed to read ".
2361 $got += length($buf);
2363 $SIG{'PIPE'} = 'DEFAULT';
2369 # Run the CGI program, and feed it input
2371 local $qqueryargs = join(" ", map { "\"$_\"" }
2372 split(/\s+/, $queryargs));
2373 if ($first =~ /(perl|perl.exe)$/i) {
2374 # On Windows, run with Perl
2375 open(CGIOUTr, "$perl_path \"$full\" $qqueryargs <$infile |");
2378 open(CGIOUTr, "\"$full\" $qqueryargs <$infile |");
2384 # read back cgi headers
2385 select(CGIOUTr); $|=1; select(STDOUT);
2389 $line =~ s/\r|\n//g;
2391 if ($got_blank || %cgiheader) { last; }
2395 if ($line !~ /^(\S+):\s+(.*)$/) {
2396 $errs = &read_errors(CGIERRr);
2397 close(CGIOUTr); close(CGIERRr);
2398 unlink($infile) if ($infile);
2399 &http_error(500, "Bad Header", $errs);
2401 $cgiheader{lc($1)} = $2;
2402 push(@cgiheader, [ $1, $2 ]);
2404 if ($cgiheader{"location"}) {
2405 &write_data("HTTP/1.0 302 Moved Temporarily\r\n");
2406 &write_data("Date: $datestr\r\n");
2407 &write_data("Server: $config{'server'}\r\n");
2408 &write_keep_alive(0);
2409 # ignore the rest of the output. This is a hack,
2410 # but is necessary for IE in some cases :(
2411 close(CGIOUTr); close(CGIERRr);
2413 elsif ($cgiheader{"content-type"} eq "") {
2414 close(CGIOUTr); close(CGIERRr);
2415 unlink($infile) if ($infile);
2416 $errs = &read_errors(CGIERRr);
2417 &http_error(500, "Missing Content-Type Header",
2418 $config{'noshowstderr'} ? undef : $errs);
2421 &write_data("HTTP/1.0 $ok_code $ok_message\r\n");
2422 &write_data("Date: $datestr\r\n");
2423 &write_data("Server: $config{'server'}\r\n");
2424 &write_keep_alive(0);
2426 foreach $h (@cgiheader) {
2427 &write_data("$h->[0]: $h->[1]\r\n");
2429 &write_data("\r\n");
2431 &reset_byte_count();
2432 while($line = <CGIOUTr>) {
2437 unlink($infile) if ($infile);
2443 print DEBUG "handle_request: outputting file $full\n";
2444 $gzfile = $full.".gz";
2446 if ($config{'gzip'} ne '0' && -r $gzfile && $acceptenc{'gzip'}) {
2447 # Using gzipped version
2448 @stopen = stat($gzfile);
2449 if ($stopen[9] >= $stfull[9] && open(FILE, $gzfile)) {
2450 print DEBUG "handle_request: using gzipped $gzfile\n";
2455 # Using original file
2457 open(FILE, $full) || &http_error(404, "Failed to open file");
2461 # Build common headers
2462 local $resp = "HTTP/1.0 $ok_code $ok_message\r\n".
2463 "Date: $datestr\r\n".
2464 "Server: $config{server}\r\n".
2465 "Content-type: ".&get_type($full)."\r\n".
2466 "Last-Modified: ".&http_date($stopen[9])."\r\n".
2467 "Expires: ".&http_date(time()+$config{'expires'})."\r\n";
2469 if (!$gzipped && $use_gzip && $acceptenc{'gzip'} &&
2470 &should_gzip_file($full)) {
2471 # Load and compress file, then output
2472 print DEBUG "handle_request: outputting gzipped file $full\n";
2473 open(FILE, $full) || &http_error(404, "Failed to open file");
2479 @stopen = stat($file);
2480 $data = Compress::Zlib::memGzip($data);
2481 $resp .= "Content-length: ".length($data)."\r\n".
2482 "Content-Encoding: gzip\r\n";
2484 $rv = &write_keep_alive();
2485 &write_data("\r\n");
2486 &reset_byte_count();
2490 # Stream file output
2491 $resp .= "Content-length: $stopen[7]\r\n";
2492 $resp .= "Content-Encoding: gzip\r\n" if ($gzipped);
2494 $rv = &write_keep_alive();
2495 &write_data("\r\n");
2496 &reset_byte_count();
2497 while(read(FILE, $buf, 1024) > 0) {
2505 &log_request($acpthost, $authuser, $reqline,
2506 $logged_code ? $logged_code :
2507 $cgiheader{"location"} ? "302" : $ok_code, &byte_count());
2511 # http_error(code, message, body, [dontexit])
2514 local $eh = $error_handler_recurse ? undef :
2515 $config{"error_handler_$_[0]"} ? $config{"error_handler_$_[0]"} :
2516 $config{'error_handler'} ? $config{'error_handler'} : undef;
2517 print DEBUG "http_error code=$_[0] message=$_[1] body=$_[2]\n";
2519 # Call a CGI program for the error
2521 $querystring = "code=$_[0]&message=".&urlize($_[1]).
2522 "&body=".&urlize($_[2]);
2523 $error_handler_recurse++;
2525 $ok_message = $_[1];
2529 # Use the standard error message display
2530 &write_data("HTTP/1.0 $_[0] $_[1]\r\n");
2531 &write_data("Server: $config{server}\r\n");
2532 &write_data("Date: $datestr\r\n");
2533 &write_data("Content-type: text/html\r\n");
2534 &write_keep_alive(0);
2535 &write_data("\r\n");
2536 &reset_byte_count();
2537 &write_data("<h1>Error - $_[1]</h1>\n");
2539 &write_data("<pre>$_[2]</pre>\n");
2542 &log_request($acpthost, $authuser, $reqline, $_[0], &byte_count())
2544 &log_error($_[1], $_[2] ? " : $_[2]" : "");
2551 if ($_[0] =~ /\.([A-z0-9]+)$/) {
2557 return "text/plain";
2560 # simplify_path(path, bogus)
2561 # Given a path, maybe containing stuff like ".." and "." convert it to a
2562 # clean, absolute form.
2565 local($dir, @bits, @fixedbits, $b);
2567 $dir =~ s/\\/\//g; # fix windows \ in path
2570 $dir =~ s/\0//g; # remove null bytes
2571 @bits = split(/\/+/, $dir);
2574 foreach $b (@bits) {
2578 elsif ($b eq ".." || $b eq "...") {
2580 if (scalar(@fixedbits) == 0) {
2588 push(@fixedbits, $b);
2591 return "/" . join('/', @fixedbits);
2595 # Converts a string from base64 format to normal
2598 local($str) = $_[0];
2600 $str =~ tr|A-Za-z0-9+=/||cd;
2602 $str =~ tr|A-Za-z0-9+/| -_|;
2603 while ($str =~ /(.{1,60})/gs) {
2604 my $len = chr(32 + length($1)*3/4);
2605 $res .= unpack("u", $len . $1 );
2610 # ip_match(remoteip, localip, [match]+)
2611 # Checks an IP address against a list of IPs, networks and networks/masks
2614 local(@io, @mo, @ms, $i, $j, $hn, $needhn);
2615 @io = &check_ip6address($_[0]) ? split(/:/, $_[0])
2616 : split(/\./, $_[0]);
2617 for($i=2; $i<@_; $i++) {
2618 $needhn++ if ($_[$i] =~ /^\*(\S+)$/);
2620 if ($needhn && !defined($hn = $ip_match_cache{$_[0]})) {
2621 # Reverse-lookup hostname if any rules match based on it
2622 $hn = &to_hostname($_[0]);
2623 if (&check_ip6address($_[0])) {
2624 $hn = "" if (&to_ip6address($hn) ne $_[0]);
2627 $hn = "" if (&to_ipaddress($hn) ne $_[0]);
2629 $ip_match_cache{$_[0]} = $hn;
2631 for($i=2; $i<@_; $i++) {
2632 local $mismatch = 0;
2633 if ($_[$i] =~ /^(\S+)\/(\d+)$/) {
2634 # Convert CIDR to netmask format
2635 $_[$i] = $1."/".&prefix_to_mask($2);
2637 if ($_[$i] =~ /^(\S+)\/(\S+)$/) {
2638 # Compare with IPv4 network/mask
2639 @mo = split(/\./, $1); @ms = split(/\./, $2);
2640 for($j=0; $j<4; $j++) {
2641 if ((int($io[$j]) & int($ms[$j])) != int($mo[$j])) {
2646 elsif ($_[$i] =~ /^\*(\S+)$/) {
2647 # Compare with hostname regexp
2648 $mismatch = 1 if ($hn !~ /$1$/);
2650 elsif ($_[$i] eq 'LOCAL' && &check_ipaddress($_[1])) {
2651 # Compare with local IPv4 network
2652 local @lo = split(/\./, $_[1]);
2654 $mismatch = 1 if ($lo[0] != $io[0]);
2656 elsif ($lo[0] < 192) {
2657 $mismatch = 1 if ($lo[0] != $io[0] ||
2661 $mismatch = 1 if ($lo[0] != $io[0] ||
2666 elsif ($_[$i] eq 'LOCAL' && &check_ip6address($_[1])) {
2667 # Compare with local IPv6 network, which is always first 4 words
2668 local @lo = split(/:/, $_[1]);
2669 for(my $i=0; $i<4; $i++) {
2670 $mismatch = 1 if ($lo[$i] ne $io[$i]);
2673 elsif ($_[$i] =~ /^[0-9\.]+$/) {
2674 # Compare with IPv4 address or network
2675 @mo = split(/\./, $_[$i]);
2676 while(@mo && !$mo[$#mo]) { pop(@mo); }
2677 for($j=0; $j<@mo; $j++) {
2678 if ($mo[$j] != $io[$j]) {
2683 elsif ($_[$i] =~ /^[a-f0-9:]+$/) {
2684 # Compare with IPv6 address or network
2685 @mo = split(/:/, $_[$i]);
2686 while(@mo && !$mo[$#mo]) { pop(@mo); }
2687 for($j=0; $j<@mo; $j++) {
2688 if ($mo[$j] ne $io[$j]) {
2693 elsif ($_[$i] !~ /^[0-9\.]+$/) {
2694 # Compare with hostname
2695 $mismatch = 1 if ($_[0] ne &to_ipaddress($_[$i]));
2697 return 1 if (!$mismatch);
2702 # users_match(&uinfo, user, ...)
2703 # Returns 1 if a user is in a list of users and groups
2706 local $uinfo = shift(@_);
2708 local @ginfo = getgrgid($uinfo->[3]);
2710 if ($u =~ /^\@(\S+)$/) {
2711 return 1 if (&is_group_member($uinfo, $1));
2713 elsif ($u =~ /^(\d*)-(\d*)$/ && ($1 || $2)) {
2714 return (!$1 || $uinfo[2] >= $1) &&
2715 (!$2 || $uinfo[2] <= $2);
2718 return 1 if ($u eq $uinfo->[0]);
2724 # restart_miniserv()
2725 # Called when a SIGHUP is received to restart the web server. This is done
2726 # by exec()ing perl with the same command line as was originally used
2727 sub restart_miniserv
2729 print STDERR "restarting miniserv\n";
2730 &log_error("Restarting");
2732 &close_all_sockets();
2734 dbmclose(%sessiondb);
2735 kill('KILL', $logclearer) if ($logclearer);
2736 kill('KILL', $extauth) if ($extauth);
2737 exec($perl_path, $miniserv_path, @miniserv_argv);
2738 die "Failed to restart miniserv with $perl_path $miniserv_path";
2751 # to_ipaddress(address, ...)
2756 if ($i =~ /(\S+)\/(\S+)/ || $i =~ /^\*\S+$/ ||
2757 $i eq 'LOCAL' || $i =~ /^[0-9\.]+$/ || $i =~ /^[a-f0-9:]+$/) {
2758 # A pattern or IP, not a hostname, so don't change
2763 push(@rv, join('.', unpack("CCCC", inet_aton($i))));
2766 return wantarray ? @rv : $rv[0];
2769 # to_ip6address(address, ...)
2774 if ($i =~ /(\S+)\/(\S+)/ || $i =~ /^\*\S+$/ ||
2775 $i eq 'LOCAL' || $i =~ /^[0-9\.]+$/ || $i =~ /^[a-f0-9:]+$/) {
2776 # A pattern, not a hostname, so don't change
2780 # Lookup IPv6 address
2781 local ($inaddr, $addr);
2782 (undef, undef, undef, $inaddr) =
2783 getaddrinfo($i, undef, Socket6::AF_INET6(), SOCK_STREAM);
2788 (undef, $addr) = unpack_sockaddr_in6($inaddr);
2789 push(@rv, inet_ntop(Socket6::AF_INET6(), $addr));
2793 return wantarray ? @rv : $rv[0];
2796 # to_hostname(ipv4|ipv6-address)
2797 # Reverse-resolves an IPv4 or 6 address to a hostname
2801 if (&check_ip6address($_[0])) {
2802 return gethostbyaddr(inet_pton(Socket6::AF_INET6(), $addr),
2803 Socket6::AF_INET6());
2806 return gethostbyaddr(inet_aton($addr), AF_INET);
2810 # read_line(no-wait, no-limit)
2811 # Reads one line from SOCK or SSL
2814 local ($nowait, $nolimit) = @_;
2815 local($idx, $more, $rv);
2816 while(($idx = index($main::read_buffer, "\n")) < 0) {
2817 if (length($main::read_buffer) > 10000 && !$nolimit) {
2818 &http_error(414, "Request too long",
2819 "Received excessive line <pre>$main::read_buffer</pre>");
2822 # need to read more..
2823 &wait_for_data_error() if (!$nowait);
2825 $more = Net::SSLeay::read($ssl_con);
2828 local $ok = sysread(SOCK, $more, 1024);
2829 $more = undef if ($ok <= 0);
2833 $rv = $main::read_buffer;
2834 undef($main::read_buffer);
2837 $main::read_buffer .= $more;
2839 $rv = substr($main::read_buffer, 0, $idx+1);
2840 $main::read_buffer = substr($main::read_buffer, $idx+1);
2845 # Reads up to some amount of data from SOCK or the SSL connection
2849 if (length($main::read_buffer)) {
2850 if (length($main::read_buffer) > $_[0]) {
2851 # Return the first part of the buffer
2852 $rv = substr($main::read_buffer, 0, $_[0]);
2853 $main::read_buffer = substr($main::read_buffer, $_[0]);
2857 # Return the whole buffer
2858 $rv = $main::read_buffer;
2859 undef($main::read_buffer);
2864 # Call SSL read function
2865 return Net::SSLeay::read($ssl_con, $_[0]);
2868 # Just do a normal read
2870 sysread(SOCK, $buf, $_[0]) || return undef;
2876 # Read a line from a file handle, using sysread to get a byte at a time
2883 $got = sysread($fh, $buf, 1);
2884 last if ($got <= 0);
2886 last if ($buf eq "\n");
2891 # wait_for_data(secs)
2892 # Waits at most the given amount of time for some data on SOCK, returning
2893 # 0 if not found, 1 if some arrived.
2897 vec($rmask, fileno(SOCK), 1) = 1;
2898 local $got = select($rmask, undef, undef, $_[0]);
2899 return $got == 0 ? 0 : 1;
2902 # wait_for_data_error()
2903 # Waits 60 seconds for data on SOCK, and fails if none arrives
2904 sub wait_for_data_error
2906 local $got = &wait_for_data(60);
2908 &http_error(400, "Timeout",
2909 "Waited more than 60 seconds for request data");
2913 # write_data(data, ...)
2914 # Writes a string to SOCK or the SSL connection
2917 local $str = join("", @_);
2919 Net::SSLeay::write($ssl_con, $str);
2922 syswrite(SOCK, $str, length($str));
2924 # Intentionally introduce a small delay to avoid problems where IE reports
2925 # the page as empty / DNS failed when it get a large response too quickly!
2926 select(undef, undef, undef, .01) if ($write_data_count%10 == 0);
2927 $write_data_count += length($str);
2930 # reset_byte_count()
2931 sub reset_byte_count { $write_data_count = 0; }
2934 sub byte_count { return $write_data_count; }
2936 # log_request(hostname, user, request, code, bytes)
2939 if ($config{'log'}) {
2940 local ($user, $ident, $headers);
2941 if ($config{'logident'}) {
2942 # add support for rfc1413 identity checking here
2944 else { $ident = "-"; }
2945 $user = $_[1] ? $_[1] : "-";
2946 local $dstr = &make_datestr();
2947 if (fileno(MINISERVLOG)) {
2948 seek(MINISERVLOG, 0, 2);
2951 open(MINISERVLOG, ">>$config{'logfile'}");
2952 chmod(0600, $config{'logfile'});
2954 if (defined($config{'logheaders'})) {
2955 foreach $h (split(/\s+/, $config{'logheaders'})) {
2956 $headers .= " $h=\"$header{$h}\"";
2959 elsif ($config{'logclf'}) {
2960 $headers = " \"$header{'referer'}\" \"$header{'user-agent'}\"";
2965 print MINISERVLOG "$_[0] $ident $user [$dstr] \"$_[2]\" ",
2966 "$_[3] $_[4]$headers\n";
2974 local @tm = localtime(time());
2975 return sprintf "%2.2d/%s/%4.4d:%2.2d:%2.2d:%2.2d %s",
2976 $tm[3], $month[$tm[4]], $tm[5]+1900,
2977 $tm[2], $tm[1], $tm[0], $timezone;
2980 # log_error(message)
2984 print STDERR "[",&make_datestr(),"] ",
2985 $acpthost ? ( "[",$acpthost,"] " ) : ( ),
2986 $page ? ( $page," : " ) : ( ),
2990 # read_errors(handle)
2991 # Read and return all input from some filehandle
2994 local($fh, $_, $rv);
2996 while(<$fh>) { $rv .= $_; }
3000 sub write_keep_alive
3003 if ($config{'nokeepalive'}) {
3004 # Keep alives have been disabled in config
3007 elsif (@childpids > $config{'maxconns'}*.8) {
3008 # Disable because nearing process limit
3012 # Keep alive specified by caller
3016 # Keep alive determined by browser
3017 $mode = $header{'connection'} =~ /keep-alive/i;
3019 &write_data("Connection: ".($mode ? "Keep-Alive" : "close")."\r\n");
3025 kill('TERM', @childpids) if (@childpids);
3026 kill('KILL', $logclearer) if ($logclearer);
3027 kill('KILL', $extauth) if ($extauth);
3033 local @tm = gmtime($_[0]);
3034 return sprintf "%s, %d %s %d %2.2d:%2.2d:%2.2d GMT",
3035 $weekday[$tm[6]], $tm[3], $month[$tm[4]], $tm[5]+1900,
3036 $tm[2], $tm[1], $tm[0];
3041 my $i; bless \$i, shift;
3047 my($buf,$len,$offset) = @_;
3048 &write_to_sock(substr($buf, $offset, $len));
3049 $miniserv::page_capture_out .= substr($buf, $offset, $len)
3050 if ($miniserv::page_capture);
3057 my $buf = join(defined($,) ? $, : "", @_);
3058 $buf .= $\ if defined($\);
3059 &write_to_sock($buf);
3060 $miniserv::page_capture_out .= $buf
3061 if ($miniserv::page_capture);
3068 my $buf = sprintf $fmt, @_;
3069 &write_to_sock($buf);
3070 $miniserv::page_capture_out .= $buf
3071 if ($miniserv::page_capture);
3074 # Send back already read data while we have it, then read from SOCK
3078 my $bufref = \$_[0];
3081 if ($postpos < length($postinput)) {
3082 # Reading from already fetched array
3083 my $left = length($postinput) - $postpos;
3084 my $canread = $len > $left ? $left : $len;
3085 substr($$bufref, $offset, $canread) =
3086 substr($postinput, $postpos, $canread);
3087 $postpos += $canread;
3091 # Read from network socket
3092 local $data = &read_data($len);
3093 if ($data eq '' && $len) {
3095 print STDERR "finished reading - shutting down socket\n";
3098 substr($$bufref, $offset, length($data)) = $data;
3099 return length($data);
3105 #print STDERR "open() called - should never happen!\n";
3108 # Read a line of input
3112 if ($postpos < length($postinput) &&
3113 ($idx = index($postinput, "\n", $postpos)) >= 0) {
3114 # A line exists in the memory buffer .. use it
3115 my $line = substr($postinput, $postpos, $idx-$postpos+1);
3120 # Need to read from the socket
3122 if ($postpos < length($postinput)) {
3123 # Start with in-memory data
3124 $line = substr($postinput, $postpos);
3125 $postpos = length($postinput);
3127 my $nl = &read_line(0, 1);
3130 print STDERR "finished reading - shutting down socket\n";
3133 $line .= $nl if (defined($nl));
3138 # Read one character of input
3143 my $got = READ($r, \$buf, 1, 0);
3144 return $got > 0 ? $buf : undef;
3149 return fileno(SOCK);
3156 # write_to_sock(data, ...)
3161 if ($doneheaders || $miniserv::nph_script) {
3166 while(!$doneheaders && $headers =~ s/^([^\r\n]*)(\r)?\n//) {
3167 if ($1 =~ /^(\S+):\s+(.*)$/) {
3168 $cgiheader{lc($1)} = $2;
3169 push(@cgiheader, [ $1, $2 ]);
3171 elsif ($1 !~ /\S/) {
3175 &http_error(500, "Bad Header");
3179 if ($cgiheader{"location"}) {
3181 "HTTP/1.0 302 Moved Temporarily\r\n");
3182 &write_data("Date: $datestr\r\n");
3183 &write_data("Server: $config{server}\r\n");
3184 &write_keep_alive(0);
3186 elsif ($cgiheader{"content-type"} eq "") {
3187 &http_error(500, "Missing Content-Type Header");
3190 &write_data("HTTP/1.0 $ok_code $ok_message\r\n");
3191 &write_data("Date: $datestr\r\n");
3192 &write_data("Server: $config{server}\r\n");
3193 &write_keep_alive(0);
3195 foreach $h (@cgiheader) {
3196 &write_data("$h->[0]: $h->[1]\r\n");
3198 &write_data("\r\n");
3199 &reset_byte_count();
3200 &write_data($headers);
3208 local $cert = Net::SSLeay::X509_STORE_CTX_get_current_cert($_[1]);
3210 local $errnum = Net::SSLeay::X509_STORE_CTX_get_error($_[1]);
3211 $verified_client = 1 if (!$errnum);
3218 if ($doing_cgi_eval && $$ == $main_process_id) {
3219 # A CGI program called exit! This is a horrible hack to
3220 # finish up before really exiting
3223 close($PASSINw); close($PASSOUTw);
3224 &log_request($acpthost, $authuser, $reqline,
3225 $cgiheader{"location"} ? "302" : $ok_code, &byte_count());
3230 # Convert a string to a form ok for putting in a URL
3232 local($tmp, $tmp2, $c);
3235 while(($c = chop($tmp)) ne "") {
3236 if ($c !~ /[A-z0-9]/) {
3237 $c = sprintf("%%%2.2X", ord($c));
3244 # validate_user(username, password, host)
3245 # Checks if some username and password are valid. Returns the modified username,
3246 # the expired / temp pass flag, and the non-existence flag
3249 local ($user, $pass, $host) = @_;
3250 return ( ) if (!$user);
3251 print DEBUG "validate_user: user=$user pass=$pass host=$host\n";
3252 local ($canuser, $canmode, $notexist, $webminuser, $sudo) =
3253 &can_user_login($user, undef, $host);
3254 print DEBUG "validate_user: canuser=$canuser canmode=$canmode notexist=$notexist webminuser=$webminuser sudo=$sudo\n";
3256 # User doesn't even exist, so go no further
3257 return ( undef, 0, 1 );
3259 elsif ($canmode == 0) {
3260 # User does exist but cannot login
3261 return ( $canuser, 0, 0 );
3263 elsif ($canmode == 1) {
3264 # Attempt Webmin authentication
3265 my $uinfo = &get_user_details($webminuser);
3267 &password_crypt($pass, $uinfo->{'pass'}) eq $uinfo->{'pass'}) {
3268 # Password is valid .. but check for expiry
3269 local $lc = $uinfo->{'lastchanges'};
3270 print DEBUG "validate_user: Password is valid lc=$lc pass_maxdays=$config{'pass_maxdays'}\n";
3271 if ($config{'pass_maxdays'} && $lc && !$uinfo->{'nochange'}) {
3272 local $daysold = (time() - $lc)/(24*60*60);
3273 print DEBUG "maxdays=$config{'pass_maxdays'} daysold=$daysold temppass=$uinfo->{'temppass'}\n";
3274 if ($config{'pass_lockdays'} &&
3275 $daysold > $config{'pass_lockdays'}) {
3276 # So old that the account is locked
3277 return ( undef, 0, 0 );
3279 elsif ($daysold > $config{'pass_maxdays'}) {
3280 # Password has expired
3281 return ( $user, 1, 0 );
3284 if ($uinfo->{'temppass'}) {
3285 # Temporary password - force change now
3286 return ( $user, 2, 0 );
3288 return ( $user, 0, 0 );
3291 print DEBUG "validate_user: User $webminuser not found\n";
3292 return ( undef, 0, 0 );
3295 print DEBUG "validate_user: User $webminuser password mismatch $pass != $uinfo->{'pass'}\n";
3296 return ( undef, 0, 0 );
3299 elsif ($canmode == 2 || $canmode == 3) {
3300 # Attempt PAM or passwd file authentication
3301 local $val = &validate_unix_user($canuser, $pass);
3302 print DEBUG "validate_user: unix val=$val\n";
3303 if ($val && $sudo) {
3304 # Need to check if this Unix user can sudo
3305 if (!&check_sudo_permissions($canuser, $pass)) {
3306 print DEBUG "validate_user: sudo failed\n";
3310 print DEBUG "validate_user: sudo passed\n";
3313 return $val == 2 ? ( $canuser, 1, 0 ) :
3314 $val == 1 ? ( $canuser, 0, 0 ) : ( undef, 0, 0 );
3316 elsif ($canmode == 4) {
3317 # Attempt external authentication
3318 return &validate_external_user($canuser, $pass) ?
3319 ( $canuser, 0, 0 ) : ( undef, 0, 0 );
3327 # validate_unix_user(user, password)
3328 # Returns 1 if a username and password are valid under unix, 0 if not,
3329 # or 2 if the account has expired.
3330 # Checks PAM if available, and falls back to reading the system password
3332 sub validate_unix_user
3336 $pam_username = $_[0];
3337 $pam_password = $_[1];
3338 eval "use Authen::PAM;";
3339 local $pamh = new Authen::PAM($config{'pam'}, $pam_username,
3342 local $pam_ret = $pamh->pam_authenticate();
3343 if ($pam_ret == PAM_SUCCESS()) {
3344 # Logged in OK .. make sure password hasn't expired
3345 local $acct_ret = $pamh->pam_acct_mgmt();
3346 if ($acct_ret == PAM_SUCCESS()) {
3347 $pamh->pam_open_session();
3350 elsif ($acct_ret == PAM_NEW_AUTHTOK_REQD() ||
3351 $acct_ret == PAM_ACCT_EXPIRED()) {
3355 print STDERR "Unknown pam_acct_mgmt return value : $acct_ret\n";
3362 elsif ($config{'pam_only'}) {
3363 # Pam is not available, but configuration forces it's use!
3366 elsif ($config{'passwd_file'}) {
3367 # Check in a password file
3369 open(FILE, $config{'passwd_file'});
3370 if ($config{'passwd_file'} eq '/etc/security/passwd') {
3371 # Assume in AIX format
3374 if (/^\s*(\S+):/ && $1 eq $_[0]) {
3376 if (/^\s*password\s*=\s*(\S+)\s*$/) {
3377 $rv = $1 eq &password_crypt($_[1], $1) ?
3385 # Read the system password or shadow file
3387 local @l = split(/:/, $_, -1);
3388 local $u = $l[$config{'passwd_uindex'}];
3389 local $p = $l[$config{'passwd_pindex'}];
3391 $rv = $p eq &password_crypt($_[1], $p) ? 1 : 0;
3392 if ($config{'passwd_cindex'} ne '' && $rv) {
3393 # Password may have expired!
3394 local $c = $l[$config{'passwd_cindex'}];
3395 local $m = $l[$config{'passwd_mindex'}];
3396 local $day = time()/(24*60*60);
3397 if ($c =~ /^\d+/ && $m =~ /^\d+/ &&
3403 if ($p eq "" && $config{'passwd_blank'}) {
3404 # Force password change
3412 return $rv if ($rv);
3415 # Fallback option - check password returned by getpw*
3416 local @uinfo = getpwnam($_[0]);
3417 if ($uinfo[1] ne '' && &password_crypt($_[1], $uinfo[1]) eq $uinfo[1]) {
3421 return 0; # Totally failed
3424 # validate_external_user(user, pass)
3425 # Validate a user by passing the username and password to an external
3426 # squid-style authentication program
3427 sub validate_external_user
3429 return 0 if (!$config{'extauth'});
3431 local $str = "$_[0] $_[1]\n";
3432 syswrite(EXTAUTH, $str, length($str));
3433 local $resp = <EXTAUTH>;
3435 return $resp =~ /^OK/i ? 1 : 0;
3438 # can_user_login(username, no-append, host)
3439 # Checks if a user can login or not.
3440 # First return value is the username.
3441 # Second is 0 if cannot login, 1 if using Webmin pass, 2 if PAM, 3 if password
3442 # file, 4 if external.
3443 # Third is 1 if the user does not exist at all, 0 if he does.
3444 # Fourth is the Webmin username whose permissions apply, based on unixauth.
3445 # Fifth is a flag indicating if a sudo check is needed.
3448 local $uinfo = &get_user_details($_[0]);
3450 # See if this user exists in Unix and can be validated by the same
3451 # method as the unixauth webmin user
3452 local $realuser = $unixauth{$_[0]};
3456 eval { @uinfo = getpwnam($_[0]); }; # may fail on windows
3457 if (!$realuser && @uinfo) {
3458 # No unixauth entry for the username .. try his groups
3459 foreach my $ua (keys %unixauth) {
3460 if ($ua =~ /^\@(.*)$/) {
3461 if (&is_group_member(\@uinfo, $1)) {
3462 $realuser = $unixauth{$ua};
3468 if (!$realuser && @uinfo) {
3469 # Fall back to unix auth for all Unix users
3470 $realuser = $unixauth{"*"};
3472 if (!$realuser && $use_sudo && @uinfo) {
3473 # Allow login effectively as root, if sudo permits it
3477 if (!$realuser && !@uinfo && $config{'pamany'}) {
3478 # If the user completely doesn't exist, we can still allow
3479 # him to authenticate via PAM
3480 $realuser = $config{'pamany'};
3484 # For Usermin, always fall back to unix auth for any user,
3485 # so that later checks with domain added / removed are done.
3486 $realuser = $unixauth{"*"};
3488 return (undef, 0, 1, undef) if (!$realuser);
3489 local $uinfo = &get_user_details($realuser);
3490 return (undef, 0, 1, undef) if (!$uinfo);
3491 local $up = $uinfo->{'pass'};
3493 # Work out possible domain names from the hostname
3494 local @doms = ( $_[2] );
3495 if ($_[2] =~ /^([^\.]+)\.(\S+)$/) {
3499 if ($config{'user_mapping'} && !%user_mapping) {
3500 # Read the user mapping file
3502 open(MAPPING, $config{'user_mapping'});
3506 if (/^(\S+)\s+(\S+)/) {
3507 if ($config{'user_mapping_reverse'}) {
3508 $user_mapping{$1} = $2;
3511 $user_mapping{$2} = $1;
3518 # Check the user mapping file to see if there is an entry for the
3519 # user login in which specifies a new effective user
3521 foreach my $d (@doms) {
3522 $um ||= $user_mapping{"$_[0]\@$d"};
3524 $um ||= $user_mapping{$_[0]};
3525 if (defined($um) && ($_[1]&4) == 0) {
3526 # A mapping exists - use it!
3527 return &can_user_login($um, $_[1]+4, $_[2]);
3530 # Check if a user with the entered login and the domains appended
3531 # or prepended exists, and if so take it to be the effective user
3532 if (!@uinfo && $config{'domainuser'}) {
3533 # Try again with name.domain and name.firstpart
3534 local @firsts = map { /^([^\.]+)/; $1 } @doms;
3535 if (($_[1]&1) == 0) {
3537 foreach $a (@firsts, @doms) {
3538 foreach $p ("$_[0].${a}", "$_[0]-${a}",
3539 "${a}.$_[0]", "${a}-$_[0]",
3540 "$_[0]_${a}", "${a}_$_[0]") {
3541 local @vu = &can_user_login(
3542 $p, $_[1]+1, $_[2]);
3543 return @vu if ($vu[1]);
3549 # Check if the user entered a domain at the end of his username when
3550 # he really shouldn't have, and if so try without it
3551 if (!@uinfo && $config{'domainstrip'} &&
3552 $_[0] =~ /^(\S+)\@(\S+)$/ && ($_[1]&2) == 0) {
3553 local ($stripped, $dom) = ($1, $2);
3554 local @vu = &can_user_login($stripped, $_[1] + 2, $_[2]);
3555 return @vu if ($vu[1]);
3556 local @vu = &can_user_login($stripped, $_[1] + 2, $dom);
3557 return @vu if ($vu[1]);
3560 return ( undef, 0, 1, undef ) if (!@uinfo && !$pamany);
3563 if (scalar(@allowusers)) {
3564 # Only allow people on the allow list
3565 return ( undef, 0, 0, undef )
3566 if (!&users_match(\@uinfo, @allowusers));
3568 elsif (scalar(@denyusers)) {
3569 # Disallow people on the deny list
3570 return ( undef, 0, 0, undef )
3571 if (&users_match(\@uinfo, @denyusers));
3573 if ($config{'shells_deny'}) {
3575 open(SHELLS, $config{'shells_deny'});
3579 $found++ if ($_ eq $uinfo[8]);
3582 return ( undef, 0, 0, undef ) if (!$found);
3587 # PAM or passwd file authentication
3588 print DEBUG "can_user_login: Validate with PAM\n";
3589 return ( $_[0], $use_pam ? 2 : 3, 0, $realuser, $sudo );
3591 elsif ($up eq 'e') {
3592 # External authentication
3593 print DEBUG "can_user_login: Validate externally\n";
3594 return ( $_[0], 4, 0, $realuser, $sudo );
3597 # Fixed Webmin password
3598 print DEBUG "can_user_login: Validate by Webmin\n";
3599 return ( $_[0], 1, 0, $realuser, $sudo );
3602 elsif ($uinfo->{'pass'} eq 'x') {
3603 # Webmin user authenticated via PAM or password file
3604 return ( $_[0], $use_pam ? 2 : 3, 0, $_[0] );
3606 elsif ($uinfo->{'pass'} eq 'e') {
3607 # Webmin user authenticated externally
3608 return ( $_[0], 4, 0, $_[0] );
3611 # Normal Webmin user
3612 return ( $_[0], 1, 0, $_[0] );
3616 # the PAM conversation function for interactive logins
3619 $pam_conv_func_called++;
3626 $ans = $pam_username if ($code == PAM_PROMPT_ECHO_ON() );
3627 $ans = $pam_password if ($code == PAM_PROMPT_ECHO_OFF() );
3629 push @res, PAM_SUCCESS();
3632 push @res, PAM_SUCCESS();
3641 # get_socket_ip(handle, ipv6-flag)
3642 # Returns the local IP address of some connection, as both a string and in
3646 local ($fh, $ipv6) = @_;
3647 local $sn = getsockname($fh);
3648 return undef if (!$sn);
3649 return &get_address_ip($sn, $ipv6);
3652 # get_address_ip(address, ipv6-flag)
3653 # Given a sockaddr object in binary format, return the binary address, text
3654 # address and port number
3657 local ($sn, $ipv6) = @_;
3659 local ($p, $b) = unpack_sockaddr_in6($sn);
3660 return ($b, inet_ntop(Socket6::AF_INET6(), $b), $p);
3663 local ($p, $b) = unpack_sockaddr_in($sn);
3664 return ($b, inet_ntoa($b), $p);
3668 # get_socket_name(handle, ipv6-flag)
3669 # Returns the local hostname or IP address of some connection
3672 local ($fh, $ipv6) = @_;
3673 return $config{'host'} if ($config{'host'});
3674 local ($mybin, $myaddr) = &get_socket_ip($fh, $ipv6);
3675 if (!$get_socket_name_cache{$myaddr}) {
3677 if (!$config{'no_resolv_myname'}) {
3678 $myname = gethostbyaddr($mybin,
3679 $ipv6 ? Socket6::AF_INET6() : AF_INET);
3681 $myname ||= $myaddr;
3682 $get_socket_name_cache{$myaddr} = $myname;
3684 return $get_socket_name_cache{$myaddr};
3687 # run_login_script(username, sid, remoteip, localip)
3688 sub run_login_script
3690 if ($config{'login_script'}) {
3691 system($config{'login_script'}.
3692 " ".join(" ", map { quotemeta($_) || '""' } @_).
3693 " >/dev/null 2>&1 </dev/null");
3697 # run_logout_script(username, sid, remoteip, localip)
3698 sub run_logout_script
3700 if ($config{'logout_script'}) {
3701 system($config{'logout_script'}.
3702 " ".join(" ", map { quotemeta($_) || '""' } @_).
3703 " >/dev/null 2>&1 </dev/null");
3707 # close_all_sockets()
3708 # Closes all the main listening sockets
3709 sub close_all_sockets
3712 foreach $s (@socketfhs) {
3718 # Close all pipes for talking to sub-processes
3722 foreach $p (@passin) { close($p); }
3723 foreach $p (@passout) { close($p); }
3724 foreach $p (values %conversations) {
3725 if ($p->{'PAMOUTr'}) {
3726 close($p->{'PAMOUTr'});
3727 close($p->{'PAMINw'});
3732 # check_user_ip(user)
3733 # Returns 1 if some user is allowed to login from the accepting IP, 0 if not
3736 local ($username) = @_;
3737 local $uinfo = &get_user_details($username);
3738 return 1 if (!$uinfo);
3739 if ($uinfo->{'deny'} &&
3740 &ip_match($acptip, $localip, @{$uinfo->{'deny'}}) ||
3741 $uinfo->{'allow'} &&
3742 !&ip_match($acptip, $localip, @{$uinfo->{'allow'}})) {
3748 # check_user_time(user)
3749 # Returns 1 if some user is allowed to login at the current date and time
3752 local ($username) = @_;
3753 local $uinfo = &get_user_details($username);
3754 return 1 if (!$uinfo || !$uinfo->{'allowdays'} && !$uinfo->{'allowhours'});
3755 local @tm = localtime(time());
3756 if ($uinfo->{'allowdays'}) {
3757 # Make sure day is allowed
3758 return 0 if (&indexof($tm[6], @{$uinfo->{'allowdays'}}) < 0);
3760 if ($uinfo->{'allowhours'}) {
3761 # Make sure time is allowed
3762 local $m = $tm[2]*60+$tm[1];
3763 return 0 if ($m < $uinfo->{'allowhours'}->[0] ||
3764 $m > $uinfo->{'allowhours'}->[1]);
3769 # generate_random_id(password, [force-urandom])
3770 # Returns a random session ID number
3771 sub generate_random_id
3773 local ($pass, $force_urandom) = @_;
3775 if (!$bad_urandom) {
3776 # First try /dev/urandom, unless we have marked it as bad
3777 $SIG{ALRM} = "miniserv::urandom_timeout";
3779 if (open(RANDOM, "/dev/urandom")) {
3781 if (read(RANDOM, $tmpsid, 16) == 16) {
3782 $sid = lc(unpack('h*',$tmpsid));
3788 if (!$sid && !$force_urandom) {
3791 foreach $c (split(//, &unix_crypt($pass, substr($$, -2)))) {
3792 $sid += ord($c) * $mul;
3799 # handle_login(username, ok, expired, not-exists, password, [no-test-cookie])
3800 # Called from handle_session to either mark a user as logged in, or not
3803 local ($vu, $ok, $expired, $nonexist, $pass, $notest) = @_;
3804 $authuser = $vu if ($ok);
3806 # check if the test cookie is set
3807 if ($header{'cookie'} !~ /testing=1/ && $vu &&
3808 !$config{'no_testing_cookie'} && !$notest) {
3809 &http_error(500, "No cookies",
3810 "Your browser does not support cookies, ".
3811 "which are required for this web server to ".
3812 "work in session authentication mode");
3815 # check with main process for delay
3816 if ($config{'passdelay'} && $vu) {
3817 print DEBUG "handle_login: requesting delay vu=$vu acptip=$acptip ok=$ok\n";
3818 print $PASSINw "delay $vu $acptip $ok\n";
3819 <$PASSOUTr> =~ /(\d+) (\d+)/;
3822 print DEBUG "handle_login: delay=$1 blocked=$2\n";
3825 if ($ok && (!$expired ||
3826 $config{'passwd_mode'} == 1)) {
3827 # Logged in OK! Tell the main process about
3829 local $sid = &generate_random_id($pass);
3830 print DEBUG "handle_login: sid=$sid\n";
3831 print $PASSINw "new $sid $authuser $acptip\n";
3833 # Run the post-login script, if any
3834 &run_login_script($authuser, $sid,
3837 # Check for a redirect URL for the user
3838 local $rurl = &login_redirect($authuser, $pass, $host);
3839 print DEBUG "handle_login: redirect URL rurl=$rurl\n";
3841 # Got one .. go to it
3842 &write_data("HTTP/1.0 302 Moved Temporarily\r\n");
3843 &write_data("Date: $datestr\r\n");
3844 &write_data("Server: $config{'server'}\r\n");
3845 &write_data("Location: $rurl\r\n");
3846 &write_keep_alive(0);
3847 &write_data("\r\n");
3848 &log_request($acpthost, $authuser, $reqline, 302, 0);
3851 # Set cookie and redirect to originally requested page
3852 &write_data("HTTP/1.0 302 Moved Temporarily\r\n");
3853 &write_data("Date: $datestr\r\n");
3854 &write_data("Server: $config{'server'}\r\n");
3855 local $ssl = $use_ssl || $config{'inetd_ssl'};
3856 $portstr = $port == 80 && !$ssl ? "" :
3857 $port == 443 && $ssl ? "" : ":$port";
3858 $prot = $ssl ? "https" : "http";
3859 local $sec = $ssl ? "; secure" : "";
3860 #$sec .= "; httpOnly";
3861 if ($in{'page'} !~ /^\/[A-Za-z0-9\/\.\-\_]+$/) {
3862 # Make redirect URL safe
3866 &write_data("Set-Cookie: $sidname=$sid; path=/; expires=\"Thu, 31-Dec-2037 00:00:00\"$sec\r\n");
3869 &write_data("Set-Cookie: $sidname=$sid; path=/$sec\r\n");
3871 &write_data("Location: $prot://$host$portstr$in{'page'}\r\n");
3872 &write_keep_alive(0);
3873 &write_data("\r\n");
3874 &log_request($acpthost, $authuser, $reqline, 302, 0);
3875 syslog("info", "%s", "Successful login as $authuser from $acpthost") if ($use_syslog);
3876 &write_login_utmp($authuser, $acpthost);
3880 elsif ($ok && $expired &&
3881 ($config{'passwd_mode'} == 2 || $expired == 2)) {
3882 # Login was ok, but password has expired or was temporary. Need
3883 # to force display of password change form.
3886 $querystring = "&user=".&urlize($vu).
3888 "&expired=".$expired;
3891 $page = $config{'password_form'};
3893 $miniserv_internal = 2;
3894 syslog("crit", "%s",
3895 "Expired login as $vu ".
3896 "from $acpthost") if ($use_syslog);
3899 # Login failed, or password has expired. The login form will be
3900 # displayed again by later code
3902 $request_uri = $in{'page'};
3903 $already_session_id = undef;
3905 $authuser = $baseauthuser = undef;
3906 syslog("crit", "%s",
3907 ($nonexist ? "Non-existent" :
3908 $expired ? "Expired" : "Invalid").
3909 " login as $vu from $acpthost")
3915 # write_login_utmp(user, host)
3916 # Record the login by some user in utmp
3917 sub write_login_utmp
3920 # Write utmp record for login
3921 %utmp = ( 'ut_host' => $_[1],
3922 'ut_time' => time(),
3924 'ut_type' => 7, # user process
3925 'ut_pid' => $main_process_id,
3926 'ut_line' => $config{'pam'},
3928 if (defined(&User::Utmp::putut)) {
3929 User::Utmp::putut(\%utmp);
3932 User::Utmp::pututline(\%utmp);
3937 # write_logout_utmp(user, host)
3938 # Record the logout by some user in utmp
3939 sub write_logout_utmp
3942 # Write utmp record for logout
3943 %utmp = ( 'ut_host' => $_[1],
3944 'ut_time' => time(),
3946 'ut_type' => 8, # dead process
3947 'ut_pid' => $main_process_id,
3948 'ut_line' => $config{'pam'},
3950 if (defined(&User::Utmp::putut)) {
3951 User::Utmp::putut(\%utmp);
3954 User::Utmp::pututline(\%utmp);
3959 # pam_conversation_process(username, write-pipe, read-pipe)
3960 # This function is called inside a sub-process to communicate with PAM. It sends
3961 # questions down one pipe, and reads responses from another
3962 sub pam_conversation_process
3964 local ($user, $writer, $reader) = @_;
3965 $miniserv::pam_conversation_process_writer = $writer;
3966 $miniserv::pam_conversation_process_reader = $reader;
3967 eval "use Authen::PAM;";
3968 local $convh = new Authen::PAM(
3969 $config{'pam'}, $user, \&miniserv::pam_conversation_process_func);
3970 local $pam_ret = $convh->pam_authenticate();
3971 if ($pam_ret == PAM_SUCCESS()) {
3972 local $acct_ret = $convh->pam_acct_mgmt();
3973 if ($acct_ret == PAM_SUCCESS()) {
3974 $convh->pam_open_session();
3975 print $writer "x2 $user 1 0 0\n";
3977 elsif ($acct_ret == PAM_NEW_AUTHTOK_REQD() ||
3978 $acct_ret == PAM_ACCT_EXPIRED()) {
3979 print $writer "x2 $user 1 1 0\n";
3982 print $writer "x0 Unknown PAM account status $acct_ret\n";
3986 print $writer "x2 $user 0 0 0\n";
3991 # pam_conversation_process_func(type, message, [type, message, ...])
3992 # A pipe that talks to both PAM and the master process
3993 sub pam_conversation_process_func
3996 select($miniserv::pam_conversation_process_writer); $| = 1; select(STDOUT);
3998 local ($type, $msg) = (shift, shift);
4000 local $ok = (print $miniserv::pam_conversation_process_writer "$type $msg\n");
4001 print $miniserv::pam_conversation_process_writer "\n";
4002 local $answer = <$miniserv::pam_conversation_process_reader>;
4003 $answer =~ s/\r|\n//g;
4004 push(@rv, PAM_SUCCESS(), $answer);
4006 push(@rv, PAM_SUCCESS());
4011 # Returns 4 new pipe file handles
4014 local ($PASSINr, $PASSINw, $PASSOUTr, $PASSOUTw);
4016 local %taken = ( (map { $_, 1 } @passin),
4017 (map { $_->{'PASSINr'} } values %conversations) );
4018 for($p=0; $taken{"PASSINr$p"}; $p++) { }
4019 $PASSINr = "PASSINr$p";
4020 $PASSINw = "PASSINw$p";
4021 $PASSOUTr = "PASSOUTr$p";
4022 $PASSOUTw = "PASSOUTw$p";
4023 pipe($PASSINr, $PASSINw);
4024 pipe($PASSOUTr, $PASSOUTw);
4025 select($PASSINw); $| = 1;
4026 select($PASSINr); $| = 1;
4027 select($PASSOUTw); $| = 1;
4028 select($PASSOUTw); $| = 1;
4030 return ($PASSINr, $PASSINw, $PASSOUTr, $PASSOUTw);
4033 # recv_pam_question(&conv, fd)
4034 # Reads one PAM question from the sub-process, and sends it to the HTTP handler.
4035 # Returns 0 if the conversation is over, 1 if not.
4036 sub recv_pam_question
4038 local ($conf, $fh) = @_;
4039 local $pr = $conf->{'PAMOUTr'};
4040 select($pr); $| = 1; select(STDOUT);
4041 local $line = <$pr>;
4042 $line =~ s/\r|\n//g;
4045 $line =~ s/\r|\n//g;
4047 $conf->{'last'} = time();
4050 print $fh "0 PAM conversation error\n";
4054 local ($type, $msg) = split(/\s+/, $line, 2);
4055 if ($type =~ /^x(\d+)/) {
4056 # Pass this status code through
4057 print $fh "$1 $msg\n";
4058 return $1 == 2 || $1 == 0 ? 0 : 1;
4060 elsif ($type == PAM_PROMPT_ECHO_ON()) {
4062 print $fh "1 $msg\n";
4065 elsif ($type == PAM_PROMPT_ECHO_OFF()) {
4067 print $fh "3 $msg\n";
4070 elsif ($type == PAM_ERROR_MSG() || $type == PAM_TEXT_INFO()) {
4071 # A message that does not require a response
4072 print $fh "4 $msg\n";
4077 print $fh "0 Unknown PAM message type $type\n";
4083 # send_pam_answer(&conv, answer)
4084 # Sends a response from the user to the PAM sub-process
4087 local ($conf, $answer) = @_;
4088 local $pw = $conf->{'PAMINw'};
4089 $conf->{'last'} = time();
4090 print $pw "$answer\n";
4093 # end_pam_conversation(&conv)
4094 # Clean up PAM conversation pipes and processes
4095 sub end_pam_conversation
4098 kill('KILL', $conv->{'pid'}) if ($conv->{'pid'});
4099 if ($conv->{'PAMINr'}) {
4100 close($conv->{'PAMINr'});
4101 close($conv->{'PAMOUTr'});
4102 close($conv->{'PAMINw'});
4103 close($conv->{'PAMOUTw'});
4105 delete($conversations{$conv->{'cid'}});
4108 # get_ipkeys(&miniserv)
4109 # Returns a list of IP address to key file mappings from a miniserv.conf entry
4113 foreach $k (keys %{$_[0]}) {
4114 if ($k =~ /^ipkey_(\S+)/) {
4115 local $ipkey = { 'ips' => [ split(/,/, $1) ],
4116 'key' => $_[0]->{$k},
4117 'index' => scalar(@rv) };
4118 $ipkey->{'cert'} = $_[0]->{'ipcert_'.$1};
4125 # create_ssl_context(keyfile, [certfile])
4126 sub create_ssl_context
4128 local ($keyfile, $certfile) = @_;
4130 eval { $ssl_ctx = Net::SSLeay::new_x_ctx() };
4131 $ssl_ctx ||= Net::SSLeay::CTX_new();
4132 $ssl_ctx || die "Failed to create SSL context : $!";
4133 if ($client_certs) {
4134 Net::SSLeay::CTX_load_verify_locations(
4135 $ssl_ctx, $config{'ca'}, "");
4136 Net::SSLeay::CTX_set_verify(
4137 $ssl_ctx, &Net::SSLeay::VERIFY_PEER, \&verify_client);
4139 if ($config{'extracas'}) {
4141 foreach $p (split(/\s+/, $config{'extracas'})) {
4142 Net::SSLeay::CTX_load_verify_locations(
4147 Net::SSLeay::CTX_use_RSAPrivateKey_file(
4149 &Net::SSLeay::FILETYPE_PEM) || die "Failed to open SSL key $keyfile";
4150 Net::SSLeay::CTX_use_certificate_file(
4151 $ssl_ctx, $certfile || $keyfile,
4152 &Net::SSLeay::FILETYPE_PEM) || die "Failed to open SSL cert $certfile";
4157 # ssl_connection_for_ip(socket, ipv6-flag)
4158 # Returns a new SSL connection object for some socket, or undef if failed
4159 sub ssl_connection_for_ip
4161 local ($sock, $ipv6) = @_;
4162 local $sn = getsockname($sock);
4164 print STDERR "Failed to get address for socket $sock\n";
4167 local (undef, $myip, undef) = &get_address_ip($sn, $ipv6);
4168 local $ssl_ctx = $ssl_contexts{$myip} || $ssl_contexts{"*"};
4169 local $ssl_con = Net::SSLeay::new($ssl_ctx);
4170 if ($config{'ssl_cipher_list'}) {
4171 # Force use of ciphers
4172 eval "Net::SSLeay::set_cipher_list(
4173 \$ssl_con, \$config{'ssl_cipher_list'})";
4175 print STDERR "SSL cipher $config{'ssl_cipher_list'} failed : ",
4181 Net::SSLeay::set_fd($ssl_con, fileno($sock));
4182 if (!Net::SSLeay::accept($ssl_con)) {
4183 print STDERR "Failed to initialize SSL connection\n";
4189 # login_redirect(username, password, host)
4190 # Calls the login redirect script (if configured), which may output a URL to
4191 # re-direct a user to after logging in.
4194 return undef if (!$config{'login_redirect'});
4195 local $quser = quotemeta($_[0]);
4196 local $qpass = quotemeta($_[1]);
4197 local $qhost = quotemeta($_[2]);
4198 local $url = `$config{'login_redirect'} $quser $qpass $qhost`;
4203 # reload_config_file()
4204 # Re-read %config, and call post-config actions
4205 sub reload_config_file
4207 &log_error("Reloading configuration");
4208 %config = &read_config_file($config_file);
4209 &update_vital_config();
4212 &build_config_mappings();
4213 &read_webmin_crons();
4215 if ($config{'session'}) {
4216 dbmclose(%sessiondb);
4217 dbmopen(%sessiondb, $config{'sessiondb'}, 0700);
4221 # read_config_file(file)
4222 # Reads the given config file, and returns a hash of values
4223 sub read_config_file
4226 open(CONF, $_[0]) || die "Failed to open config file $_[0] : $!";
4229 if (/^#/ || !/\S/) { next; }
4231 $name = $1; $val = $2;
4232 $name =~ s/^\s+//g; $name =~ s/\s+$//g;
4233 $val =~ s/^\s+//g; $val =~ s/\s+$//g;
4240 # update_vital_config()
4241 # Updates %config with defaults, and dies if something vital is missing
4242 sub update_vital_config
4244 my %vital = ("port", 80,
4246 "server", "MiniServ/0.01",
4247 "index_docs", "index.html index.htm index.cgi index.php",
4248 "addtype_html", "text/html",
4249 "addtype_txt", "text/plain",
4250 "addtype_gif", "image/gif",
4251 "addtype_jpg", "image/jpeg",
4252 "addtype_jpeg", "image/jpeg",
4253 "realm", "MiniServ",
4254 "session_login", "/session_login.cgi",
4255 "pam_login", "/pam_login.cgi",
4256 "password_form", "/password_form.cgi",
4257 "password_change", "/password_change.cgi",
4261 "unauth", "^/unauthenticated/ ^/robots.txt\$ ^[A-Za-z0-9\\-/_]+\\.jar\$ ^[A-Za-z0-9\\-/_]+\\.class\$ ^[A-Za-z0-9\\-/_]+\\.gif\$ ^[A-Za-z0-9\\-/_]+\\.conf\$ ^[A-Za-z0-9\\-/_]+\\.ico\$ ^/robots.txt\$",
4263 "expires", 7*24*60*60,
4264 "pam_test_user", "root",
4265 "precache", "lang/en */lang/en",
4267 foreach my $v (keys %vital) {
4269 if ($vital{$v} eq "") {
4270 die "Missing config option $v";
4272 $config{$v} = $vital{$v};
4275 if (!$config{'sessiondb'}) {
4276 $config{'pidfile'} =~ /^(.*)\/[^\/]+$/;
4277 $config{'sessiondb'} = "$1/sessiondb";
4279 if (!$config{'errorlog'}) {
4280 $config{'logfile'} =~ /^(.*)\/[^\/]+$/;
4281 $config{'errorlog'} = "$1/miniserv.error";
4283 if (!$config{'tempbase'}) {
4284 $config{'pidfile'} =~ /^(.*)\/[^\/]+$/;
4285 $config{'tempbase'} = "$1/cgitemp";
4287 if (!$config{'blockedfile'}) {
4288 $config{'pidfile'} =~ /^(.*)\/[^\/]+$/;
4289 $config{'blockedfile'} = "$1/blocked";
4291 if (!$config{'webmincron_dir'}) {
4292 $config_file =~ /^(.*)\/[^\/]+$/;
4293 $config{'webmincron_dir'} = "$1/webmincron/crons";
4295 if (!$config{'webmincron_last'}) {
4296 $config{'logfile'} =~ /^(.*)\/[^\/]+$/;
4297 $config{'webmincron_last'} = "$1/miniserv.lastcrons";
4299 if (!$config{'webmincron_wrapper'}) {
4300 $config{'webmincron_wrapper'} = $config{'root'}.
4301 "/webmincron/webmincron.pl";
4306 # Fills the %users and %certs hashes from the users file in %config
4315 undef(%lastchanges);
4318 if ($config{'userfile'}) {
4319 open(USERS, $config{'userfile'});
4322 local @user = split(/:/, $_, -1);
4323 $users{$user[0]} = $user[1];
4324 $certs{$user[0]} = $user[3] if ($user[3]);
4325 if ($user[4] =~ /^allow\s+(.*)/) {
4326 $allow{$user[0]} = $config{'alwaysresolve'} ?
4327 [ split(/\s+/, $1) ] :
4328 [ &to_ipaddress(split(/\s+/, $1)) ];
4330 elsif ($user[4] =~ /^deny\s+(.*)/) {
4331 $deny{$user[0]} = $config{'alwaysresolve'} ?
4332 [ split(/\s+/, $1) ] :
4333 [ &to_ipaddress(split(/\s+/, $1)) ];
4335 if ($user[5] =~ /days\s+(\S+)/) {
4336 $allowdays{$user[0]} = [ split(/,/, $1) ];
4338 if ($user[5] =~ /hours\s+(\d+)\.(\d+)-(\d+).(\d+)/) {
4339 $allowhours{$user[0]} = [ $1*60+$2, $3*60+$4 ];
4341 $lastchanges{$user[0]} = $user[6];
4342 $nochange{$user[0]} = $user[9];
4343 $temppass{$user[0]} = $user[10];
4348 # Test user DB, if configured
4349 if ($config{'userdb'}) {
4350 my $dbh = &connect_userdb($config{'userdb'});
4352 print STDERR "Failed to open users database : $dbh\n"
4355 &disconnect_userdb($config{'userdb'}, $dbh);
4360 # get_user_details(username)
4361 # Returns a hash ref of user details, either from config files or the user DB
4362 sub get_user_details
4364 my ($username) = @_;
4365 if (exists($users{$username})) {
4367 return { 'name' => $username,
4368 'pass' => $users{$username},
4369 'certs' => $certs{$username},
4370 'allow' => $allow{$username},
4371 'deny' => $deny{$username},
4372 'allowdays' => $allowdays{$username},
4373 'allowhours' => $allowhours{$username},
4374 'lastchanges' => $lastchanges{$username},
4375 'nochange' => $nochange{$username},
4376 'temppass' => $temppass{$username},
4377 'preroot' => $config{'preroot_'.$username},
4380 if ($config{'userdb'}) {
4381 # Try querying user database
4382 if (exists($get_user_details_cache{$username})) {
4384 return $get_user_details_cache{$username};
4386 print DEBUG "get_user_details: Connecting to user database\n";
4387 my ($dbh, $proto, $prefix, $args) = &connect_userdb($config{'userdb'});
4391 print DEBUG "get_user_details: Failed : $dbh\n";
4392 print STDERR "Failed to connect to user database : $dbh\n";
4394 elsif ($proto eq "mysql" || $proto eq "postgresql") {
4395 # Fetch user ID and password with SQL
4396 print DEBUG "get_user_details: Looking for $username in SQL\n";
4397 my $cmd = $dbh->prepare(
4398 "select id,pass from webmin_user where name = ?");
4399 if (!$cmd || !$cmd->execute($username)) {
4400 print STDERR "Failed to lookup user : ",
4404 my ($id, $pass) = $cmd->fetchrow();
4407 &disconnect_userdb($config{'userdb'}, $dbh);
4408 $get_user_details_cache{$username} = undef;
4409 print DEBUG "get_user_details: User not found\n";
4412 print DEBUG "get_user_details: id=$id pass=$pass\n";
4414 # Fetch attributes and add to user object
4415 print DEBUG "get_user_details: finding user attributes\n";
4416 my $cmd = $dbh->prepare(
4417 "select attr,value from webmin_user_attr where id = ?");
4418 if (!$cmd || !$cmd->execute($id)) {
4419 print STDERR "Failed to lookup user attrs : ",
4423 $user = { 'name' => $username,
4426 'proto' => $proto };
4427 while(my ($attr, $value) = $cmd->fetchrow()) {
4428 $attrs{$attr} = $value;
4432 elsif ($proto eq "ldap") {
4433 # Fetch user DN with LDAP
4434 print DEBUG "get_user_details: Looking for $username in LDAP\n";
4435 my $rv = $dbh->search(
4437 filter => '(&(cn='.$username.')(objectClass='.
4438 $args->{'userclass'}.'))',
4440 if (!$rv || $rv->code) {
4441 print STDERR "Failed to lookup user : ",
4442 ($rv ? $rv->error : "Unknown error"),"\n";
4445 my ($u) = $rv->all_entries();
4447 &disconnect_userdb($config{'userdb'}, $dbh);
4448 $get_user_details_cache{$username} = undef;
4449 print DEBUG "get_user_details: User not found\n";
4453 # Extract attributes
4454 my $pass = $u->get_value('webminPass');
4455 $user = { 'name' => $username,
4458 'proto' => $proto };
4459 foreach my $la ($u->get_value('webminAttr')) {
4460 my ($attr, $value) = split(/=/, $la, 2);
4461 $attrs{$attr} = $value;
4465 # Convert DB attributes into user object fields
4467 print DEBUG "get_user_details: got ",scalar(keys %attrs),
4469 $user->{'certs'} = $attrs{'cert'};
4470 if ($attrs{'allow'}) {
4471 $user->{'allow'} = $config{'alwaysresolve'} ?
4472 [ split(/\s+/, $attrs{'allow'}) ] :
4473 [ &to_ipaddress(split(/\s+/,$attrs{'allow'})) ];
4475 if ($attrs{'deny'}) {
4476 $user->{'deny'} = $config{'alwaysresolve'} ?
4477 [ split(/\s+/, $attrs{'deny'}) ] :
4478 [ &to_ipaddress(split(/\s+/,$attrs{'deny'})) ];
4480 if ($attrs{'days'}) {
4481 $user->{'allowdays'} = [ split(/,/, $attrs{'days'}) ];
4483 if ($attrs{'hoursfrom'} && $attrs{'hoursto'}) {
4484 my ($hf, $mf) = split(/\./, $attrs{'hoursfrom'});
4485 my ($ht, $mt) = split(/\./, $attrs{'hoursto'});
4486 $user->{'allowhours'} = [ $hf*60+$ht, $ht*60+$mt ];
4488 $user->{'lastchanges'} = $attrs{'lastchange'};
4489 $user->{'nochange'} = $attrs{'nochange'};
4490 $user->{'temppass'} = $attrs{'temppass'};
4491 $user->{'preroot'} = $attrs{'theme'};
4493 &disconnect_userdb($config{'userdb'}, $dbh);
4494 $get_user_details_cache{$user->{'name'}} = $user;
4500 # find_user_by_cert(cert)
4501 # Returns a username looked up by certificate
4502 sub find_user_by_cert
4504 my ($peername) = @_;
4505 my $peername2 = $peername;
4506 $peername2 =~ s/Email=/emailAddress=/ || $peername2 =~ s/emailAddress=/Email=/;
4508 # First check users in local files
4509 foreach my $username (keys %certs) {
4510 if ($certs{$username} eq $peername ||
4511 $certs{$username} eq $peername2) {
4517 if ($config{'userdb'}) {
4518 my ($dbh, $proto) = &connect_userdb($config{'userdb'});
4522 elsif ($proto eq "mysql" || $proto eq "postgresql") {
4524 my $cmd = $dbh->prepare("select webmin_user.name from webmin_user,webmin_user_attr where webmin_user.id = webmin_user_attr.id and webmin_user_attr.attr = 'cert' and webmin_user_attr.value = ?");
4525 return undef if (!$cmd);
4526 foreach my $p ($peername, $peername2) {
4528 if ($cmd->execute($p)) {
4529 ($username) = $cmd->fetchrow();
4532 return $username if ($username);
4535 elsif ($proto eq "ldap") {
4537 my $rv = $dbh->search(
4539 filter => '(objectClass='.
4540 $args->{'userclass'}.')',
4542 attrs => [ 'cn', 'webminAttr' ]);
4543 if ($rv && !$rv->code) {
4544 foreach my $u ($rv->all_entries) {
4545 my @attrs = $u->get_value('webminAttr');
4546 foreach my $la (@attrs) {
4547 my ($attr, $value) = split(/=/, $la, 2);
4548 if ($attr eq "cert" &&
4549 ($value eq $peername ||
4550 $value eq $peername2)) {
4551 return $u->get_value('cn');
4561 # connect_userdb(string)
4562 # Returns a handle for talking to a user database - may be a DBI or LDAP handle.
4563 # On failure returns an error message string. In an array context, returns the
4564 # protocol type too.
4568 my ($proto, $user, $pass, $host, $prefix, $args) = &split_userdb_string($str);
4569 if ($proto eq "mysql") {
4570 # Connect to MySQL with DBI
4571 my $drh = eval "use DBI; DBI->install_driver('mysql');";
4572 $drh || return $text{'sql_emysqldriver'};
4573 my ($host, $port) = split(/:/, $host);
4574 my $cstr = "database=$prefix;host=$host";
4575 $cstr .= ";port=$port" if ($port);
4576 print DEBUG "connect_userdb: Connecting to MySQL $cstr as $user\n";
4577 my $dbh = $drh->connect($cstr, $user, $pass, { });
4578 $dbh || return &text('sql_emysqlconnect', $drh->errstr);
4579 print DEBUG "connect_userdb: Connected OK\n";
4580 return wantarray ? ($dbh, $proto, $prefix, $args) : $dbh;
4582 elsif ($proto eq "postgresql") {
4583 # Connect to PostgreSQL with DBI
4584 my $drh = eval "use DBI; DBI->install_driver('Pg');";
4585 $drh || return $text{'sql_epostgresqldriver'};
4586 my ($host, $port) = split(/:/, $host);
4587 my $cstr = "dbname=$prefix;host=$host";
4588 $cstr .= ";port=$port" if ($port);
4589 print DEBUG "connect_userdb: Connecting to PostgreSQL $cstr as $user\n";
4590 my $dbh = $drh->connect($cstr, $user, $pass);
4591 $dbh || return &text('sql_epostgresqlconnect', $drh->errstr);
4592 print DEBUG "connect_userdb: Connected OK\n";
4593 return wantarray ? ($dbh, $proto, $prefix, $args) : $dbh;
4595 elsif ($proto eq "ldap") {
4596 # Connect with perl LDAP module
4597 eval "use Net::LDAP";
4598 $@ && return $text{'sql_eldapdriver'};
4599 my ($host, $port) = split(/:/, $host);
4600 my $scheme = $args->{'scheme'} || 'ldap';
4602 $port = $scheme eq 'ldaps' ? 636 : 389;
4604 my $ldap = Net::LDAP->new($host,
4606 'scheme' => $scheme);
4607 $ldap || return &text('sql_eldapconnect', $host);
4609 if ($args->{'tls'}) {
4610 # Switch to TLS mode
4611 eval { $mesg = $ldap->start_tls(); };
4612 if ($@ || !$mesg || $mesg->code) {
4613 return &text('sql_eldaptls',
4614 $@ ? $@ : $mesg ? $mesg->error : "Unknown error");
4617 # Login to the server
4619 $mesg = $ldap->bind(dn => $user, password => $pass);
4622 $mesg = $ldap->bind(dn => $user, anonymous => 1);
4624 if (!$mesg || $mesg->code) {
4625 return &text('sql_eldaplogin', $user,
4626 $mesg ? $mesg->error : "Unknown error");
4628 return wantarray ? ($ldap, $proto, $prefix, $args) : $ldap;
4631 return "Unknown protocol $proto";
4635 # split_userdb_string(string)
4636 # Converts a string like mysql://user:pass@host/db into separate parts
4637 sub split_userdb_string
4640 if ($str =~ /^([a-z]+):\/\/([^:]*):([^\@]*)\@([a-z0-9\.\-\_]+)\/([^\?]+)(\?(.*))?$/) {
4641 my ($proto, $user, $pass, $host, $prefix, $argstr) =
4642 ($1, $2, $3, $4, $5, $7);
4643 my %args = map { split(/=/, $_, 2) } split(/\&/, $argstr);
4644 return ($proto, $user, $pass, $host, $prefix, \%args);
4649 # disconnect_userdb(string, &handle)
4650 # Closes a handle opened by connect_userdb
4651 sub disconnect_userdb
4654 if ($str =~ /^(mysql|postgresql):/) {
4658 elsif ($str =~ /^ldap:/) {
4665 # Fills %mime with entries from file in %config and extra settings in %config
4669 if ($config{"mimetypes"} ne "") {
4670 open(MIME, $config{"mimetypes"});
4673 if (/^(\S+)\s+(.*)$/) {
4675 my @exts = split(/\s+/, $2);
4676 foreach my $ext (@exts) {
4677 $mime{$ext} = $type;
4683 foreach my $k (keys %config) {
4684 if ($k !~ /^addtype_(.*)$/) { next; }
4685 $mime{$1} = $config{$k};
4689 # build_config_mappings()
4690 # Build the anonymous access list, IP access list, unauthenticated URLs list,
4691 # redirect mapping and allow and deny lists from %config
4692 sub build_config_mappings
4694 # build anonymous access list
4696 foreach my $a (split(/\s+/, $config{'anonymous'})) {
4697 if ($a =~ /^([^=]+)=(\S+)$/) {
4698 $anonymous{$1} = $2;
4702 # build IP access list
4704 foreach my $a (split(/\s+/, $config{'ipaccess'})) {
4705 if ($a =~ /^([^=]+)=(\S+)$/) {
4710 # build unauthenticated URLs list
4711 @unauth = split(/\s+/, $config{'unauth'});
4713 # build redirect mapping
4715 foreach my $r (split(/\s+/, $config{'redirect'})) {
4716 if ($r =~ /^([^=]+)=(\S+)$/) {
4721 # build prefixes to be stripped
4722 undef(@strip_prefix);
4723 foreach my $r (split(/\s+/, $config{'strip_prefix'})) {
4724 push(@strip_prefix, $r);
4727 # Init allow and deny lists
4728 @deny = split(/\s+/, $config{"deny"});
4729 @deny = &to_ipaddress(@deny) if (!$config{'alwaysresolve'});
4730 @allow = split(/\s+/, $config{"allow"});
4731 @allow = &to_ipaddress(@allow) if (!$config{'alwaysresolve'});
4734 if ($config{'allowusers'}) {
4735 @allowusers = split(/\s+/, $config{'allowusers'});
4737 elsif ($config{'denyusers'}) {
4738 @denyusers = split(/\s+/, $config{'denyusers'});
4741 # Build list of unixauth mappings
4743 foreach my $ua (split(/\s+/, $config{'unixauth'})) {
4744 if ($ua =~ /^(\S+)=(\S+)$/) {
4748 $unixauth{"*"} = $ua;
4752 # Build list of non-session-auth pages
4753 undef(%sessiononly);
4754 foreach my $sp (split(/\s+/, $config{'sessiononly'})) {
4755 $sessiononly{$sp} = 1;
4758 # Build list of logout times
4759 undef(@logouttimes);
4760 foreach my $a (split(/\s+/, $config{'logouttimes'})) {
4761 if ($a =~ /^([^=]+)=(\S+)$/) {
4762 push(@logouttimes, [ $1, $2 ]);
4765 push(@logouttimes, [ undef, $config{'logouttime'} ]);
4767 # Build list of DAV pathss
4769 foreach my $d (split(/\s+/, $config{'davpaths'})) {
4770 push(@davpaths, $d);
4772 @davusers = split(/\s+/, $config{'dav_users'});
4774 # Mobile agent substrings and hostname prefixes
4775 @mobile_agents = split(/\t+/, $config{'mobile_agents'});
4776 @mobile_prefixes = split(/\s+/, $config{'mobile_prefixes'});
4780 if ($config{'debug'}) {
4781 open(DEBUG, ">>$config{'debug'}");
4784 open(DEBUG, ">/dev/null");
4787 # Reset cache of sudo checks
4791 # is_group_member(&uinfo, groupname)
4792 # Returns 1 if some user is a primary or secondary member of a group
4795 local ($uinfo, $group) = @_;
4796 local @ginfo = getgrnam($group);
4797 return 0 if (!@ginfo);
4798 return 1 if ($ginfo[2] == $uinfo->[3]); # primary member
4799 foreach my $m (split(/\s+/, $ginfo[3])) {
4800 return 1 if ($m eq $uinfo->[0]);
4805 # prefix_to_mask(prefix)
4806 # Converts a number like 24 to a mask like 255.255.255.0
4809 return $_[0] >= 24 ? "255.255.255.".(256-(2 ** (32-$_[0]))) :
4810 $_[0] >= 16 ? "255.255.".(256-(2 ** (24-$_[0]))).".0" :
4811 $_[0] >= 8 ? "255.".(256-(2 ** (16-$_[0]))).".0.0" :
4812 (256-(2 ** (8-$_[0]))).".0.0.0";
4815 # get_logout_time(user, session-id)
4816 # Given a username, returns the idle time before he will be logged out
4819 local ($user, $sid) = @_;
4820 if (!defined($logout_time_cache{$user,$sid})) {
4822 foreach my $l (@logouttimes) {
4823 if ($l->[0] =~ /^\@(.*)$/) {
4824 # Check group membership
4825 local @uinfo = getpwnam($user);
4826 if (@uinfo && &is_group_member(\@uinfo, $1)) {
4830 elsif ($l->[0] =~ /^\//) {
4831 # Check file contents
4832 open(FILE, $l->[0]);
4849 if ($l->[0] eq $user) {
4853 last if (defined($time));
4855 $logout_time_cache{$user,$sid} = $time;
4857 return $logout_time_cache{$user,$sid};
4860 # password_crypt(password, salt)
4861 # If the salt looks like MD5 and we have a library for it, perform MD5 hashing
4862 # of a password. Otherwise, do Unix crypt.
4865 local ($pass, $salt) = @_;
4866 if ($salt =~ /^\$1\$/ && $use_md5) {
4867 return &encrypt_md5($pass, $salt);
4870 return &unix_crypt($pass, $salt);
4874 # unix_crypt(password, salt)
4875 # Performs standard Unix hashing for a password
4878 local ($pass, $salt) = @_;
4879 if ($use_perl_crypt) {
4880 return Crypt::UnixCrypt::crypt($pass, $salt);
4883 return crypt($pass, $salt);
4887 # handle_dav_request(davpath)
4888 # Pass a request on to the Net::DAV::Server module
4889 sub handle_dav_request
4892 eval "use Filesys::Virtual::Plain";
4893 eval "use Net::DAV::Server";
4894 eval "use HTTP::Request";
4895 eval "use HTTP::Headers";
4897 if ($Net::DAV::Server::VERSION eq '1.28' && $config{'dav_nolock'}) {
4898 delete $Net::DAV::Server::implemented{lock};
4899 delete $Net::DAV::Server::implemented{unlock};
4902 # Read in request data
4903 if (!$posted_data) {
4904 local $clen = $header{"content-length"};
4905 while(length($posted_data) < $clen) {
4906 $buf = &read_data($clen - length($posted_data));
4907 if (!length($buf)) {
4908 &http_error(500, "Failed to read POST request");
4910 $posted_data .= $buf;
4914 # For subsequent logging
4915 open(MINISERVLOG, ">>$config{'logfile'}");
4919 local @u = getpwnam($authuser);
4920 if ($config{'dav_remoteuser'} && !$< && $validated) {
4923 $( = $u[3]; $) = "$u[3] $u[3]";
4924 ($>, $<) = ($u[2], $u[2]);
4926 if ($config{'dav_root'} eq '*') {
4931 &http_error(500, "Unix user $authuser does not exist");
4935 $root ||= $config{'dav_root'};
4938 # Check if this user can use DAV
4940 &users_match(\@u, @davusers) ||
4941 &http_error(500, "You are not allowed to access DAV");
4945 my $filesys = Filesys::Virtual::Plain->new({root_path => $root});
4946 my $webdav = Net::DAV::Server->new();
4947 $webdav->filesys($filesys);
4949 # Make up a request object, and feed to DAV
4950 local $ho = HTTP::Headers->new;
4951 foreach my $h (keys %header) {
4952 next if (lc($h) eq "connection");
4953 $ho->header($h => $header{$h});
4956 $request_uri =~ s/^\Q$path\E//;
4957 $request_uri = "/" if ($request_uri eq "");
4959 my $request = HTTP::Request->new($method, $request_uri, $ho,
4961 if ($config{'dav_debug'}) {
4962 print STDERR "DAV request :\n";
4963 print STDERR "---------------------------------------------\n";
4964 print STDERR $request->as_string();
4965 print STDERR "---------------------------------------------\n";
4967 my $response = $webdav->run($request);
4969 # Send back the reply
4970 &write_data("HTTP/1.1 ",$response->code()," ",$response->message(),"\r\n");
4971 local $content = $response->content();
4973 $content =~ s|href>/(.+)<|href>$path/$1<|g;
4974 $content =~ s|href>/<|href>$path<|g;
4976 foreach my $h ($response->header_field_names) {
4977 next if (lc($h) eq "connection" || lc($h) eq "content-length");
4978 &write_data("$h: ",$response->header($h),"\r\n");
4980 &write_data("Content-length: ",length($content),"\r\n");
4981 local $rv = &write_keep_alive(0);
4982 &write_data("\r\n");
4983 &write_data($content);
4985 if ($config{'dav_debug'}) {
4986 print STDERR "DAV reply :\n";
4987 print STDERR "---------------------------------------------\n";
4988 print STDERR "HTTP/1.1 ",$response->code()," ",$response->message(),"\r\n";
4989 foreach my $h ($response->header_field_names) {
4990 next if (lc($h) eq "connection" || lc($h) eq "content-length");
4991 print STDERR "$h: ",$response->header($h),"\r\n";
4993 print STDERR "Content-length: ",length($content),"\r\n";
4994 print STDERR "\r\n";
4995 print STDERR $content;
4996 print STDERR "---------------------------------------------\n";
5000 &log_request($acpthost, $authuser, $reqline, $response->code(),
5001 length($response->content()));
5004 # get_system_hostname()
5005 # Returns the hostname of this system, for reporting to listeners
5006 sub get_system_hostname
5008 # On Windows, try computername environment variable
5009 return $ENV{'computername'} if ($ENV{'computername'});
5010 return $ENV{'COMPUTERNAME'} if ($ENV{'COMPUTERNAME'});
5012 # If a specific command is set, use it first
5013 if ($config{'hostname_command'}) {
5014 local $out = `($config{'hostname_command'}) 2>&1`;
5021 # First try the hostname command
5022 local $out = `hostname 2>&1`;
5023 if (!$? && $out =~ /\S/) {
5028 # Try the Sys::Hostname module
5029 eval "use Sys::Hostname";
5031 local $rv = eval "hostname()";
5037 # Must use net name on Windows
5038 local $out = `net name 2>&1`;
5039 if ($out =~ /\-+\r?\n(\S+)/) {
5046 # indexof(string, array)
5047 # Returns the index of some value in an array, or -1
5050 for($i=1; $i <= $#_; $i++) {
5051 if ($_[$i] eq $_[0]) { return $i - 1; }
5057 # has_command(command)
5058 # Returns the full path if some command is in the path, undef if not
5062 if (!$_[0]) { return undef; }
5063 if (exists($has_command_cache{$_[0]})) {
5064 return $has_command_cache{$_[0]};
5067 if ($_[0] =~ /^\//) {
5068 $rv = -x $_[0] ? $_[0] : undef;
5071 local $sp = $on_windows ? ';' : ':';
5072 foreach $d (split($sp, $ENV{PATH})) {
5073 if (-x "$d/$_[0]") {
5078 foreach my $sfx (".exe", ".com", ".bat") {
5079 if (-r "$d/$_[0]".$sfx) {
5080 $rv = "$d/$_[0]".$sfx;
5087 $has_command_cache{$_[0]} = $rv;
5091 # check_sudo_permissions(user, pass)
5092 # Returns 1 if some user can run any command via sudo
5093 sub check_sudo_permissions
5095 local ($user, $pass) = @_;
5097 # First try the pipes
5099 print DEBUG "check_sudo_permissions: querying cache for $user\n";
5100 print $PASSINw "readsudo $user\n";
5101 local $can = <$PASSOUTr>;
5103 print DEBUG "check_sudo_permissions: cache said $can\n";
5104 if ($can =~ /^\d+$/ && $can != 2) {
5109 local $ptyfh = new IO::Pty;
5110 print DEBUG "check_sudo_permissions: ptyfh=$ptyfh\n";
5112 print STDERR "Failed to create new PTY with IO::Pty\n";
5115 local @uinfo = getpwnam($user);
5117 print STDERR "Unix user $user does not exist for sudo\n";
5121 # Execute sudo in a sub-process, via a pty
5122 local $ttyfh = $ptyfh->slave();
5123 print DEBUG "check_sudo_permissions: ttyfh=$ttyfh\n";
5124 local $tty = $ptyfh->ttyname();
5125 print DEBUG "check_sudo_permissions: tty=$tty\n";
5126 chown($uinfo[2], $uinfo[3], $tty);
5128 print DEBUG "check_sudo_permissions: about to fork..\n";
5129 local $pid = fork();
5130 print DEBUG "check_sudo_permissions: fork=$pid pid=$$\n";
5132 print STDERR "fork for sudo failed : $!\n";
5137 $ptyfh->make_slave_controlling_terminal();
5138 close(STDIN); close(STDOUT); close(STDERR);
5139 untie(*STDIN); untie(*STDOUT); untie(*STDERR);
5140 close($PASSINw); close($PASSOUTr);
5141 $( = $uinfo[3]; $) = "$uinfo[3] $uinfo[3]";
5142 ($>, $<) = ($uinfo[2], $uinfo[2]);
5147 open(STDIN, "<&SUDOr");
5148 open(STDOUT, ">$tty");
5149 open(STDERR, ">&STDOUT");
5152 print "Exec failed : $!\n";
5155 print DEBUG "check_sudo_permissions: pid=$pid\n";
5157 $ptyfh->close_slave();
5159 # Send password, and get back response
5160 local $oldfh = select(SUDOw);
5163 print DEBUG "check_sudo_permissions: about to send pass\n";
5164 local $SIG{'PIPE'} = 'ignore'; # Sometimes sudo doesn't ask for a password
5165 print SUDOw $pass,"\n";
5166 print DEBUG "check_sudo_permissions: sent pass=$pass\n";
5170 print DEBUG "check_sudo_permissions: got $_";
5176 local ($ok) = ($out =~ /\(ALL\)\s+ALL|\(ALL\)\s+NOPASSWD:\s+ALL/ ? 1 : 0);
5180 print $PASSINw "writesudo $user $ok\n";
5186 # is_mobile_useragent(agent)
5187 # Returns 1 if some user agent looks like a cellphone or other mobile device,
5189 sub is_mobile_useragent
5191 local ($agent) = @_;
5193 "UP.Link", # Openwave
5194 "Nokia", # All Nokias start with Nokia
5195 "MOT-", # All Motorola phones start with MOT-
5196 "SAMSUNG", # Samsung browsers
5197 "Samsung", # Samsung browsers
5198 "SEC-", # Samsung browsers
5199 "AU-MIC", # Samsung browsers
5200 "AUDIOVOX", # Audiovox
5201 "BlackBerry", # BlackBerry
5202 "hiptop", # Danger hiptop Sidekick
5203 "SonyEricsson", # Sony Ericsson
5204 "Ericsson", # Old Ericsson browsers , mostly WAP
5205 "Mitsu/1.1.A", # Mitsubishi phones
5206 "Panasonic WAP", # Panasonic old WAP phones
5207 "DoCoMo", # DoCoMo phones
5208 "Lynx", # Lynx text-mode linux browser
5209 "Links", # Another text-mode linux browser
5211 local @substrings = (
5212 "UP.Browser", # Openwave
5213 "MobilePhone", # NetFront
5214 "AU-MIC-A700", # Samsung A700 Obigo browsers
5215 "Danger hiptop", # Danger Sidekick hiptop
5216 "Windows CE", # Windows CE Pocket PC
5217 "IEMobile", # Windows mobile browser
5218 "Blazer", # Palm Treo Blazer
5219 "BlackBerry", # BlackBerries can emulate other browsers, but
5220 # they still keep this string in the UserAgent
5221 "SymbianOS", # New Series60 browser has safari in it and
5222 # SymbianOS is the only distinguishing string
5223 "iPhone", # Apple iPhone KHTML browser
5224 "iPod", # iPod touch browser
5225 "MobileSafari", # HTTP client in iPhone
5227 "Opera Mini", # Opera Mini
5228 "HTC_P3700", # HTC mobile device
5230 "webOS/", # Palm WebOS
5231 "Nintendo DS", # DSi / DSi-XL
5233 foreach my $p (@prefixes) {
5234 return 1 if ($agent =~ /^\Q$p\E/);
5236 foreach my $s (@substrings, @mobile_agents) {
5237 return 1 if ($agent =~ /\Q$s\E/);
5242 # write_blocked_file()
5243 # Writes out a text file of blocked hosts and users
5244 sub write_blocked_file
5246 open(BLOCKED, ">$config{'blockedfile'}");
5247 foreach my $d (grep { $hostfail{$_} } @deny) {
5248 print BLOCKED "host $d $hostfail{$d} $blockhosttime{$d}\n";
5250 foreach my $d (grep { $userfail{$_} } @denyusers) {
5251 print BLOCKED "user $d $userfail{$d} $blockusertime{$d}\n";
5254 chmod(0700, $config{'blockedfile'});
5259 open(PIDFILE, ">$config{'pidfile'}");
5260 printf PIDFILE "%d\n", getpid();
5262 $miniserv_main_pid = getpid();
5265 # lock_user_password(user)
5266 # Updates a user's password file entry to lock it, both in memory and on disk.
5267 # Returns 1 if done, -1 if no such user, 0 if already locked
5268 sub lock_user_password
5271 local $uinfo = &get_user_details($user);
5276 if ($uinfo->{'pass'} =~ /^\!/) {
5280 if (!$uinfo->{'proto'}) {
5281 # Write to users file
5282 $users{$user} = "!".$users{$user};
5283 open(USERS, $config{'userfile'});
5284 local @ufile = <USERS>;
5286 foreach my $u (@ufile) {
5287 local @uinfo = split(/:/, $u);
5288 if ($uinfo[0] eq $user) {
5289 $uinfo[1] = $users{$user};
5291 $u = join(":", @uinfo);
5293 open(USERS, ">$config{'userfile'}");
5299 if ($config{'userdb'}) {
5301 my ($dbh, $proto, $prefix, $args) = &connect_userdb($config{'userdb'});
5305 elsif ($proto eq "mysql" || $proto eq "postgresql") {
5306 # Update user attribute
5307 my $cmd = $dbh->prepare(
5308 "update webmin_user set pass = ? where id = ?");
5309 if (!$cmd || !$cmd->execute("!".$uinfo->{'pass'},
5312 print STDERR "Failed to lock password : ",
5316 $cmd->finish() if ($cmd);
5318 elsif ($proto eq "ldap") {
5319 # Update LDAP object
5320 my $rv = $dbh->modify($uinfo->{'id'},
5321 replace => { 'webminPass' => '!'.$uinfo->{'pass'} });
5322 if (!$rv || $rv->code) {
5323 print STDERR "Failed to lock password : ",
5324 ($rv ? $rv->error : "Unknown error"),"\n";
5328 &disconnect_userdb($config{'userdb'}, $dbh);
5332 return -1; # This should never be reached
5335 # hash_session_id(sid)
5336 # Returns an MD5 or Unix-crypted session ID
5340 if (!$hash_session_id_cache{$sid}) {
5343 $hash_session_id_cache{$sid} = &encrypt_md5($sid);
5347 $hash_session_id_cache{$sid} = &unix_crypt($sid, "XX");
5350 return $hash_session_id_cache{$sid};
5353 # encrypt_md5(string, [salt])
5354 # Returns a string encrypted in MD5 format
5357 local ($passwd, $salt) = @_;
5358 local $magic = '$1$';
5359 if ($salt =~ /^\$1\$([^\$]+)/) {
5360 # Extract actual salt from already encrypted password
5365 local $ctx = eval "new $use_md5";
5372 # Add some more stuff from the hash of the password and salt
5373 local $ctx1 = eval "new $use_md5";
5374 $ctx1->add($passwd);
5378 $ctx1->add($passwd);
5379 local $final = $ctx1->digest();
5380 for($pl=length($passwd); $pl>0; $pl-=16) {
5381 $ctx->add($pl > 16 ? $final : substr($final, 0, $pl));
5384 # This piece of code seems rather pointless, but it's in the C code that
5385 # does MD5 in PAM so it has to go in!
5388 for($i=length($passwd); $i; $i >>= 1) {
5393 $ctx->add(substr($passwd, $j, 1));
5396 $final = $ctx->digest();
5399 # This loop exists only to waste time
5400 for($i=0; $i<1000; $i++) {
5401 $ctx1 = eval "new $use_md5";
5402 $ctx1->add($i & 1 ? $passwd : $final);
5403 $ctx1->add($salt) if ($i % 3);
5404 $ctx1->add($passwd) if ($i % 7);
5405 $ctx1->add($i & 1 ? $final : $passwd);
5406 $final = $ctx1->digest();
5410 # Convert the 16-byte final string into a readable form
5412 local @final = map { ord($_) } split(//, $final);
5413 $l = ($final[ 0]<<16) + ($final[ 6]<<8) + $final[12];
5414 $rv .= &to64($l, 4);
5415 $l = ($final[ 1]<<16) + ($final[ 7]<<8) + $final[13];
5416 $rv .= &to64($l, 4);
5417 $l = ($final[ 2]<<16) + ($final[ 8]<<8) + $final[14];
5418 $rv .= &to64($l, 4);
5419 $l = ($final[ 3]<<16) + ($final[ 9]<<8) + $final[15];
5420 $rv .= &to64($l, 4);
5421 $l = ($final[ 4]<<16) + ($final[10]<<8) + $final[ 5];
5422 $rv .= &to64($l, 4);
5424 $rv .= &to64($l, 2);
5426 # Add salt if needed
5428 return $magic.$salt.'$'.$rv;
5437 local ($v, $n) = @_;
5440 $r .= $itoa64[$v & 0x3f];
5446 # read_file(file, &assoc, [&order], [lowercase])
5447 # Fill an associative array with name=value pairs from a file
5450 open(ARFILE, $_[0]) || return 0;
5453 if (!/^#/ && /^([^=]*)=(.*)$/) {
5454 $_[1]->{$_[3] ? lc($1) : $1} = $2;
5455 push(@{$_[2]}, $1) if ($_[2]);
5462 # write_file(file, array)
5463 # Write out the contents of an associative array as name=value lines
5466 local(%old, @order);
5467 &read_file($_[0], \%old, \@order);
5468 open(ARFILE, ">$_[0]");
5469 foreach $k (@order) {
5470 print ARFILE $k,"=",$_[1]->{$k},"\n" if (exists($_[1]->{$k}));
5472 foreach $k (keys %{$_[1]}) {
5473 print ARFILE $k,"=",$_[1]->{$k},"\n" if (!exists($old{$k}));
5478 # execute_ready_webmin_crons()
5479 # Find and run any cron jobs that are due, based on their last run time and
5480 # execution interval
5481 sub execute_ready_webmin_crons
5485 foreach my $cron (@webmincrons) {
5487 if (!$webmincron_last{$cron->{'id'}}) {
5488 # If not ever run before, don't run right away
5489 $webmincron_last{$cron->{'id'}} = $now;
5492 elsif ($cron->{'interval'} &&
5493 $now - $webmincron_last{$cron->{'id'}} > $cron->{'interval'}) {
5494 # Older than interval .. time to run
5497 elsif ($cron->{'mins'}) {
5498 # Check if current time matches spec, and we haven't run in the
5500 my @tm = localtime($now);
5501 if (&matches_cron($cron->{'mins'}, $tm[1]) &&
5502 &matches_cron($cron->{'hours'}, $tm[2]) &&
5503 &matches_cron($cron->{'days'}, $tm[3]) &&
5504 &matches_cron($cron->{'months'}, $tm[4]+1) &&
5505 &matches_cron($cron->{'weekdays'}, $tm[6]) &&
5506 $now - $webmincron_last{$cron->{'id'}} > 60) {
5512 print DEBUG "Running cron id=$cron->{'id'} ".
5513 "module=$cron->{'module'} func=$cron->{'func'}\n";
5514 $webmincron_last{$cron->{'id'}} = $now;
5518 # Run via a wrapper command, which we run like a CGI
5519 dbmclose(%sessiondb);
5521 # Setup CGI-like environment
5522 $envtz = $ENV{"TZ"};
5523 $envuser = $ENV{"USER"};
5524 $envpath = $ENV{"PATH"};
5525 $envlang = $ENV{"LANG"};
5526 $envroot = $ENV{"SystemRoot"};
5527 $envperllib = $ENV{'PERLLIB'};
5528 foreach my $k (keys %ENV) {
5531 $ENV{"PATH"} = $envpath if ($envpath);
5532 $ENV{"TZ"} = $envtz if ($envtz);
5533 $ENV{"USER"} = $envuser if ($envuser);
5534 $ENV{"OLD_LANG"} = $envlang if ($envlang);
5535 $ENV{"SystemRoot"} = $envroot if ($envroot);
5536 $ENV{'PERLLIB'} = $envperllib if ($envperllib);
5537 $ENV{"HOME"} = $user_homedir;
5538 $ENV{"SERVER_SOFTWARE"} = $config{"server"};
5539 $ENV{"SERVER_ADMIN"} = $config{"email"};
5541 $ENV{"SERVER_ROOT"} = $root0;
5542 $ENV{"SERVER_REALROOT"} = $root0;
5543 $ENV{"SERVER_PORT"} = $config{'port'};
5544 $ENV{"WEBMIN_CRON"} = 1;
5545 $ENV{"DOCUMENT_ROOT"} = $root0;
5546 $ENV{"DOCUMENT_REALROOT"} = $root0;
5547 $ENV{"MINISERV_CONFIG"} = $config_file;
5548 $ENV{"HTTPS"} = "ON" if ($use_ssl);
5549 $ENV{"MINISERV_PID"} = $miniserv_main_pid;
5550 $ENV{"SCRIPT_FILENAME"} = $config{'webmincron_wrapper'};
5551 if ($ENV{"SCRIPT_FILENAME"} =~ /^\Q$root0\E(\/.*)$/) {
5552 $ENV{"SCRIPT_NAME"} = $1;
5554 $config{'webmincron_wrapper'} =~ /^(.*)\//;
5556 foreach $k (keys %config) {
5557 if ($k =~ /^env_(\S+)$/) {
5558 $ENV{$1} = $config{$k};
5562 $SIG{'CHLD'} = 'DEFAULT';
5564 # Have SOCK closed if the perl exec's something
5566 fcntl(SOCK, F_SETFD, FD_CLOEXEC);
5569 # Run the wrapper script by evaling it
5570 $pkg = "webmincron";
5571 $0 = $config{'webmincron_wrapper'};
5573 $main_process_id = $$;
5577 do \$miniserv::config{'webmincron_wrapper'};
5581 print STDERR "Perl cron failure : $@\n";
5586 push(@childpids, $pid);
5590 # Write out file containing last run times
5591 &write_file($config{'webmincron_last'}, \%webmincron_last);
5595 # matches_cron(cron-spec, time)
5596 # Checks if some minute or hour matches some cron spec, which can be * or a list
5600 my ($spec, $tm) = @_;
5605 foreach my $s (split(/,/, $spec)) {
5607 $s =~ /^(\d+)\-(\d+)$/ && $tm >= $1 && $tm <= $2) {
5615 # read_webmin_crons()
5616 # Read all scheduled webmin cron functions and store them in the @webmincrons
5618 sub read_webmin_crons
5621 opendir(CRONS, $config{'webmincron_dir'});
5622 print DEBUG "Reading crons from $config{'webmincron_dir'}\n";
5623 foreach my $f (readdir(CRONS)) {
5624 if ($f =~ /^(\d+)\.cron$/) {
5626 &read_file("$config{'webmincron_dir'}/$f", \%cron);
5629 foreach my $n ('module', 'func') {
5631 print STDERR "Cron $1 missing $n\n";
5635 if (!$cron{'interval'} && !$cron{'mins'} && !$cron{'special'}) {
5636 print STDERR "Cron $1 missing any time spec\n";
5639 if ($cron{'special'} eq 'hourly') {
5640 # Run every hour on the hour
5642 $cron{'hours'} = '*';
5643 $cron{'days'} = '*';
5644 $cron{'months'} = '*';
5645 $cron{'weekdays'} = '*';
5647 elsif ($cron{'special'} eq 'daily') {
5648 # Run every day at midnight
5650 $cron{'hours'} = '0';
5651 $cron{'days'} = '*';
5652 $cron{'months'} = '*';
5653 $cron{'weekdays'} = '*';
5655 elsif ($cron{'special'} eq 'monthly') {
5656 # Run every month on the 1st
5658 $cron{'hours'} = '0';
5659 $cron{'days'} = '1';
5660 $cron{'months'} = '*';
5661 $cron{'weekdays'} = '*';
5663 elsif ($cron{'special'} eq 'weekly') {
5664 # Run every month on the 1st
5666 $cron{'hours'} = '0';
5667 $cron{'days'} = '*';
5668 $cron{'months'} = '*';
5669 $cron{'weekdays'} = '0';
5671 elsif ($cron{'special'} eq 'yearly' ||
5672 $cron{'special'} eq 'annually') {
5673 # Run every year on 1st january
5675 $cron{'hours'} = '0';
5676 $cron{'days'} = '1';
5677 $cron{'months'} = '1';
5678 $cron{'weekdays'} = '*';
5680 elsif ($cron{'special'}) {
5681 print STDERR "Cron $1 invalid special time $cron{'special'}\n";
5684 if ($cron{'special'}) {
5685 delete($cron{'special'});
5688 print DEBUG "adding cron id=$cron{'id'} module=$cron{'module'} func=$cron{'func'}\n";
5689 push(@webmincrons, \%cron);
5696 # Read into the Webmin cache all files marked for pre-caching
5699 undef(%main::read_file_cache);
5700 foreach my $g (split(/\s+/, $config{'precache'})) {
5701 next if ($g eq "none");
5702 foreach my $f (glob("$config{'root'}/$g")) {
5705 $main::read_file_cache{$f} = { };
5706 &read_file($f, $main::read_file_cache{$f});
5707 $main::read_file_cache_time{$f} = $st[9];
5712 # Check if some address is valid IPv4, returns 1 if so.
5715 return $_[0] =~ /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/ &&
5716 $1 >= 0 && $1 <= 255 &&
5717 $2 >= 0 && $2 <= 255 &&
5718 $3 >= 0 && $3 <= 255 &&
5719 $4 >= 0 && $4 <= 255;
5722 # Check if some IPv6 address is properly formatted, and returns 1 if so.
5723 sub check_ip6address
5725 my @blocks = split(/:/, $_[0]);
5726 return 0 if (@blocks == 0 || @blocks > 8);
5728 my $where = index($blocks[$ib],"/");
5731 my $b = substr($blocks[$ib],0,$where);
5732 $m = substr($blocks[$ib],$where+1,length($blocks[$ib])-($where+1));
5735 return 0 if ($m <0 || $m >128);
5738 foreach $b (@blocks) {
5739 return 0 if ($b ne "" && $b !~ /^[0-9a-f]{1,4}$/i);
5740 $empty++ if ($b eq "");
5742 return 0 if ($empty > 1 && !($_[0] =~ /^::/ && $empty == 2));
5746 # network_to_address(binary)
5747 # Given a network address in binary IPv4 or v4 format, return the string form
5748 sub network_to_address
5751 if (length($addr) == 4 || !$use_ipv6) {
5752 return inet_ntoa($addr);
5755 return Socket6::inet_ntop(Socket6::AF_INET6(), $addr);
5759 # redirect_stderr_to_log()
5760 # Re-direct STDERR to error log file
5761 sub redirect_stderr_to_log
5763 if ($config{'errorlog'} ne '-') {
5764 open(STDERR, ">>$config{'errorlog'}") ||
5765 die "failed to open $config{'errorlog'} : $!";
5766 if ($config{'logperms'}) {
5767 chmod(oct($config{'logperms'}), $config{'errorlog'});
5770 select(STDERR); $| = 1; select(STDOUT);
5773 # should_gzip_file(filename)
5774 # Returns 1 if some path should be gzipped
5775 sub should_gzip_file
5778 return $path !~ /\.(gif|png|jpg|jpeg|tif|tiff)$/i;