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authorPascal Rigaux <pixel@mandriva.com>2001-08-07 17:40:36 +0000
committerPascal Rigaux <pixel@mandriva.com>2001-08-07 17:40:36 +0000
commitbe838931607e1ab14c8c699e20dd807b55579f7b (patch)
tree0f528e9479c6c6da60016911884cb00a7deaf731 /perl-install/standalone/interactive_http/miniserv.pl
parent1519ef9c35afba7916dab3826dfa17df32e57b7a (diff)
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Initial revision
Diffstat (limited to 'perl-install/standalone/interactive_http/miniserv.pl')
-rw-r--r--perl-install/standalone/interactive_http/miniserv.pl1817
1 files changed, 1817 insertions, 0 deletions
diff --git a/perl-install/standalone/interactive_http/miniserv.pl b/perl-install/standalone/interactive_http/miniserv.pl
new file mode 100644
index 000000000..f866ee81a
--- /dev/null
+++ b/perl-install/standalone/interactive_http/miniserv.pl
@@ -0,0 +1,1817 @@
+#!/usr/bin/perl
+# A very simple perl web server used by Webmin
+
+# Require basic libraries
+package miniserv;
+use Socket;
+use POSIX;
+use Sys::Hostname;
+
+# Find and read config file
+if (@ARGV != 1) {
+ die "Usage: miniserv.pl <config file>";
+ }
+if ($ARGV[0] =~ /^\//) {
+ $conf = $ARGV[0];
+ }
+else {
+ chop($pwd = `pwd`);
+ $conf = "$pwd/$ARGV[0]";
+ }
+open(CONF, $conf) || die "Failed to open config file $conf : $!";
+while(<CONF>) {
+ s/\r|\n//g;
+ if (/^#/ || !/\S/) { next; }
+ /^([^=]+)=(.*)$/;
+ $name = $1; $val = $2;
+ $name =~ s/^\s+//g; $name =~ s/\s+$//g;
+ $val =~ s/^\s+//g; $val =~ s/\s+$//g;
+ $config{$name} = $val;
+ }
+close(CONF);
+
+# Check is SSL is enabled and available
+if ($config{'ssl'}) {
+ eval "use Net::SSLeay";
+ if (!$@) {
+ $use_ssl = 1;
+ # These functions only exist for SSLeay 1.0
+ eval "Net::SSLeay::SSLeay_add_ssl_algorithms()";
+ eval "Net::SSLeay::load_error_strings()";
+ if (defined(&Net::SSLeay::X509_STORE_CTX_get_current_cert) &&
+ defined(&Net::SSLeay::CTX_load_verify_locations) &&
+ defined(&Net::SSLeay::CTX_set_verify)) {
+ $client_certs = 1;
+ }
+ }
+ }
+
+# Check if the syslog module is available to log hacking attempts
+if ($config{'syslog'}) {
+ eval "use Sys::Syslog qw(:DEFAULT setlogsock)";
+ if (!$@) {
+ $use_syslog = 1;
+ }
+ }
+
+# check if the PAM module is available to authenticate
+eval "use Authen::PAM";
+if (!$@) {
+ # check if the PAM authentication can be used by opening a handle
+ if (! ref($pamh = new Authen::PAM("webmin", "root", \&pam_conv_func))) {
+ print STDERR "PAM module available, but error during init !\n";
+ print STDERR "Disabling PAM functions.\n";
+ }
+ else {
+ $use_pam = 1;
+ }
+ }
+
+# check if the TCP-wrappers module is available
+if ($config{'libwrap'}) {
+ eval "use Authen::Libwrap qw(hosts_ctl STRING_UNKNOWN)";
+ if (!$@) {
+ $use_libwrap = 1;
+ }
+ }
+
+# Get miniserv's perl path and location
+$miniserv_path = $0;
+open(SOURCE, $miniserv_path);
+<SOURCE> =~ /^#!(\S+)/; $perl_path = $1;
+close(SOURCE);
+@miniserv_argv = @ARGV;
+
+# Check vital config options
+%vital = ("port", 80,
+ "root", "./",
+ "server", "MiniServ/0.01",
+ "index_docs", "index.html index.htm index.cgi",
+ "addtype_html", "text/html",
+ "addtype_txt", "text/plain",
+ "addtype_gif", "image/gif",
+ "addtype_jpg", "image/jpeg",
+ "addtype_jpeg", "image/jpeg",
+ "realm", "MiniServ",
+ "session_login", "/session_login.cgi"
+ );
+foreach $v (keys %vital) {
+ if (!$config{$v}) {
+ if ($vital{$v} eq "") {
+ die "Missing config option $v";
+ }
+ $config{$v} = $vital{$v};
+ }
+ }
+if (!$config{'sessiondb'}) {
+ $config{'pidfile'} =~ /^(.*)\/[^\/]+$/;
+ $config{'sessiondb'} = "$1/sessiondb";
+ }
+die "Session authentication cannot be used in inetd mode"
+ if ($config{'inetd'} && $config{'session'});
+
+# init days and months for http_date
+@weekday = ( "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" );
+@month = ( "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" );
+
+# Change dir to the server root
+chdir($config{'root'});
+$user_homedir = (getpwuid($<))[7];
+
+# Read users file
+if ($config{'userfile'}) {
+ open(USERS, $config{'userfile'});
+ while(<USERS>) {
+ s/\r|\n//g;
+ local @user = split(/:/, $_);
+ $users{$user[0]} = $user[1];
+ $certs{$user[0]} = $user[3] if ($user[3]);
+ if ($user[4] =~ /^allow\s+(.*)/) {
+ $allow{$user[0]} = [ &to_ipaddress(split(/\s+/, $1)) ];
+ }
+ elsif ($user[4] =~ /^deny\s+(.*)/) {
+ $deny{$user[0]} = [ &to_ipaddress(split(/\s+/, $1)) ];
+ }
+ }
+ close(USERS);
+ }
+
+# Setup SSL if possible and if requested
+if ($use_ssl) {
+ $ssl_ctx = Net::SSLeay::CTX_new() ||
+ die "Failed to create SSL context : $!";
+ $client_certs = 0 if (!$config{'ca'} || !%certs);
+ if ($client_certs) {
+ Net::SSLeay::CTX_load_verify_locations(
+ $ssl_ctx, $config{'ca'}, "");
+ Net::SSLeay::CTX_set_verify(
+ $ssl_ctx, &Net::SSLeay::VERIFY_PEER, \&verify_client);
+ }
+
+ Net::SSLeay::CTX_use_RSAPrivateKey_file(
+ $ssl_ctx, $config{'keyfile'},
+ &Net::SSLeay::FILETYPE_PEM) || die "Failed to open SSL key";
+ Net::SSLeay::CTX_use_certificate_file(
+ $ssl_ctx, $config{'keyfile'},
+ &Net::SSLeay::FILETYPE_PEM);
+ }
+
+# Setup syslog support if possible and if requested
+if ($use_syslog) {
+ eval { openlog("webmin", "cons,pid,ndelay", "daemon") };
+ $use_syslog = 0 if ($@);
+ }
+
+# Read MIME types file and add extra types
+if ($config{"mimetypes"} ne "") {
+ open(MIME, $config{"mimetypes"});
+ while(<MIME>) {
+ chop; s/#.*$//;
+ if (/^(\S+)\s+(.*)$/) {
+ $type = $1; @exts = split(/\s+/, $2);
+ foreach $ext (@exts) {
+ $mime{$ext} = $type;
+ }
+ }
+ }
+ close(MIME);
+ }
+foreach $k (keys %config) {
+ if ($k !~ /^addtype_(.*)$/) { next; }
+ $mime{$1} = $config{$k};
+ }
+
+# get the time zone
+if ($config{'log'}) {
+ local(@gmt, @lct, $days, $hours, $mins);
+ @make_date_marr = ("Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
+ @gmt = gmtime(time());
+ @lct = localtime(time());
+ $days = $lct[3] - $gmt[3];
+ $hours = ($days < -1 ? 24 : 1 < $days ? -24 : $days * 24) +
+ $lct[2] - $gmt[2];
+ $mins = $hours * 60 + $lct[1] - $gmt[1];
+ $timezone = ($mins < 0 ? "-" : "+"); $mins = abs($mins);
+ $timezone .= sprintf "%2.2d%2.2d", $mins/60, $mins%60;
+ }
+
+if ($config{'inetd'}) {
+ # We are being run from inetd - go direct to handling the request
+ $SIG{'HUP'} = 'IGNORE';
+ $SIG{'TERM'} = 'DEFAULT';
+ $SIG{'PIPE'} = 'DEFAULT';
+ open(SOCK, "+>&STDIN");
+
+ # Check if it is time for the logfile to be cleared
+ if ($config{'logclear'}) {
+ local $write_logtime = 0;
+ local @st = stat("$config{'logfile'}.time");
+ if (@st) {
+ if ($st[9]+$config{'logtime'}*60*60 < time()){
+ # need to clear log
+ $write_logtime = 1;
+ unlink($config{'logfile'});
+ }
+ }
+ else { $write_logtime = 1; }
+ if ($write_logtime) {
+ open(LOGTIME, ">$config{'logfile'}.time");
+ print LOGTIME time(),"\n";
+ close(LOGTIME);
+ }
+ }
+
+ # Initialize SSL for this connection
+ if ($use_ssl) {
+ $ssl_con = Net::SSLeay::new($ssl_ctx);
+ Net::SSLeay::set_fd($ssl_con, fileno(SOCK));
+ #Net::SSLeay::use_RSAPrivateKey_file(
+ # $ssl_con, $config{'keyfile'},
+ # &Net::SSLeay::FILETYPE_PEM);
+ #Net::SSLeay::use_certificate_file(
+ # $ssl_con, $config{'keyfile'},
+ # &Net::SSLeay::FILETYPE_PEM);
+ Net::SSLeay::accept($ssl_con) || exit;
+ }
+
+ # Work out the hostname for this web server
+ if (!$config{'host'}) {
+ ($myport, $myaddr) =
+ unpack_sockaddr_in(getsockname(SOCK));
+ $myname = gethostbyaddr($myaddr, AF_INET);
+ if ($myname eq "") {
+ $myname = inet_ntoa($myaddr);
+ }
+ $host = $myname;
+ }
+ else { $host = $config{'host'}; }
+ $port = $config{'port'};
+
+ while(&handle_request(getpeername(SOCK), getsockname(SOCK))) { }
+ close(SOCK);
+ exit;
+ }
+
+# Open main socket
+$proto = getprotobyname('tcp');
+socket(MAIN, PF_INET, SOCK_STREAM, $proto) ||
+ die "Failed to open main socket : $!";
+setsockopt(MAIN, SOL_SOCKET, SO_REUSEADDR, pack("l", 1));
+$baddr = $config{"bind"} ? inet_aton($config{"bind"}) : INADDR_ANY;
+for($i=0; $i<5; $i++) {
+ last if (bind(MAIN, sockaddr_in($config{port}, $baddr)));
+ sleep(1);
+ }
+die "Failed to bind port $config{port} : $!" if ($i == 5);
+listen(MAIN, SOMAXCONN);
+
+if ($config{'listen'}) {
+ # Open the socket that allows other webmin servers to find this one
+ $proto = getprotobyname('udp');
+ if (socket(LISTEN, PF_INET, SOCK_DGRAM, $proto)) {
+ setsockopt(LISTEN, SOL_SOCKET, SO_REUSEADDR, pack("l", 1));
+ bind(LISTEN, sockaddr_in($config{'listen'}, INADDR_ANY));
+ listen(LISTEN, SOMAXCONN);
+ }
+ else {
+ print STDERR "Failed to open listening socket : $!\n";
+ $config{'listen'} = 0;
+ }
+ }
+
+
+# Split from the controlling terminal
+if (fork()) { exit; }
+setsid();
+
+# write out the PID file
+open(PIDFILE, "> $config{'pidfile'}");
+printf PIDFILE "%d\n", getpid();
+close(PIDFILE);
+
+# Start the log-clearing process, if needed. This checks every minute
+# to see if the log has passed its reset time, and if so clears it
+if ($config{'logclear'}) {
+ if (!($logclearer = fork())) {
+ while(1) {
+ local $write_logtime = 0;
+ local @st = stat("$config{'logfile'}.time");
+ if (@st) {
+ if ($st[9]+$config{'logtime'}*60*60 < time()){
+ # need to clear log
+ $write_logtime = 1;
+ unlink($config{'logfile'});
+ }
+ }
+ else { $write_logtime = 1; }
+ if ($write_logtime) {
+ open(LOGTIME, ">$config{'logfile'}.time");
+ print LOGTIME time(),"\n";
+ close(LOGTIME);
+ }
+ sleep(5*60);
+ }
+ exit;
+ }
+ push(@childpids, $logclearer);
+ }
+
+# Setup the logout time dbm if needed
+if ($config{'session'}) {
+ eval "use SDBM_File";
+ dbmopen(%sessiondb, $config{'sessiondb'}, 0700);
+ eval { $sessiondb{'1111111111'} = 'foo bar' };
+ if ($@) {
+ dbmclose(%sessiondb);
+ eval "use NDBM_File";
+ dbmopen(%sessiondb, $config{'sessiondb'}, 0700);
+ }
+ }
+
+# Run the main loop
+$SIG{'HUP'} = 'miniserv::trigger_restart';
+$SIG{'TERM'} = 'miniserv::term_handler';
+$SIG{'PIPE'} = 'IGNORE';
+@deny = &to_ipaddress(split(/\s+/, $config{"deny"}));
+@allow = &to_ipaddress(split(/\s+/, $config{"allow"}));
+$p = 0;
+while(1) {
+ # wait for a new connection, or a message from a child process
+ undef($rmask);
+ vec($rmask, fileno(MAIN), 1) = 1;
+ if ($config{'passdelay'} || $config{'session'}) {
+ for($i=0; $i<@passin; $i++) {
+ vec($rmask, fileno($passin[$i]), 1) = 1;
+ }
+ }
+ vec($rmask, fileno(LISTEN), 1) = 1 if ($config{'listen'});
+
+ local $sel = select($rmask, undef, undef, 10);
+ if ($need_restart) { &restart_miniserv(); }
+ local $time_now = time();
+
+ # Clean up finished processes
+ local($pid);
+ do { $pid = waitpid(-1, WNOHANG);
+ @childpids = grep { $_ != $pid } @childpids;
+ } while($pid > 0);
+
+ # run the unblocking procedure to check if enough time has passed to
+ # unblock hosts that heve been blocked because of password failures
+ if ($config{'blockhost_failures'}) {
+ $i = 0;
+ while ($i <= $#deny) {
+ if ($blockhosttime{$deny[$i]} && $config{'blockhost_time'} != 0 &&
+ ($time_now - $blockhosttime{$deny[$i]}) >= $config{'blockhost_time'}) {
+ # the host can be unblocked now
+ $hostfail{$deny[$i]} = 0;
+ splice(@deny, $i, 1);
+ }
+ $i++;
+ }
+ }
+
+ if ($config{'session'}) {
+ # Remove sessions with more than 7 days of inactivity
+ foreach $s (keys %sessiondb) {
+ local ($user, $ltime) = split(/\s+/, $sessiondb{$s});
+ if ($time_now - $ltime > 7*24*60*60) {
+ delete($sessiondb{$s});
+ }
+ }
+ }
+ next if ($sel <= 0);
+ if (vec($rmask, fileno(MAIN), 1)) {
+ # got new connection
+ $acptaddr = accept(SOCK, MAIN);
+ if (!$acptaddr) { next; }
+
+ # create pipes
+ if ($config{'passdelay'} || $config{'session'}) {
+ $PASSINr = "PASSINr$p"; $PASSINw = "PASSINw$p";
+ $PASSOUTr = "PASSOUTr$p"; $PASSOUTw = "PASSOUTw$p";
+ $p++;
+ pipe($PASSINr, $PASSINw);
+ pipe($PASSOUTr, $PASSOUTw);
+ select($PASSINw); $| = 1; select($PASSINr); $| = 1;
+ select($PASSOUTw); $| = 1; select($PASSOUTw); $| = 1;
+ }
+ select(STDOUT);
+
+ # Check username of connecting user
+ local ($peerp, $peera) = unpack_sockaddr_in($acptaddr);
+ $localauth_user = undef;
+ if ($config{'localauth'} && inet_ntoa($peera) eq "127.0.0.1") {
+ if (open(TCP, "/proc/net/tcp")) {
+ # Get the info direct from the kernel
+ while(<TCP>) {
+ s/^\s+//;
+ local @t = split(/[\s:]+/, $_);
+ if ($t[1] eq '0100007F' &&
+ $t[2] eq sprintf("%4.4X", $peerp)) {
+ $localauth_user = getpwuid($t[11]);
+ last;
+ }
+ }
+ close(TCP);
+ }
+ else {
+ # Call lsof for the info
+ local $lsofpid = open(LSOF,
+ "$config{'localauth'} -i TCP\@127.0.0.1:$peerp |");
+ while(<LSOF>) {
+ if (/^(\S+)\s+(\d+)\s+(\S+)/ &&
+ $2 != $$ && $2 != $lsofpid) {
+ $localauth_user = $3;
+ }
+ }
+ close(LSOF);
+ }
+ }
+
+ # fork the subprocess
+ if (!($handpid = fork())) {
+ # setup signal handlers
+ $SIG{'TERM'} = 'DEFAULT';
+ $SIG{'PIPE'} = 'DEFAULT';
+ #$SIG{'CHLD'} = 'IGNORE';
+ $SIG{'HUP'} = 'IGNORE';
+
+ # Initialize SSL for this connection
+ if ($use_ssl) {
+ $ssl_con = Net::SSLeay::new($ssl_ctx);
+ Net::SSLeay::set_fd($ssl_con, fileno(SOCK));
+ #Net::SSLeay::use_RSAPrivateKey_file(
+ # $ssl_con, $config{'keyfile'},
+ # &Net::SSLeay::FILETYPE_PEM);
+ #Net::SSLeay::use_certificate_file(
+ # $ssl_con, $config{'keyfile'},
+ # &Net::SSLeay::FILETYPE_PEM);
+ Net::SSLeay::accept($ssl_con) || exit;
+ }
+
+ # close useless pipes
+ if ($config{'passdelay'} || $config{'session'}) {
+ foreach $p (@passin) { close($p); }
+ foreach $p (@passout) { close($p); }
+ close($PASSINr); close($PASSOUTw);
+ }
+ close(MAIN);
+
+ # Work out the hostname for this web server
+ if (!$config{'host'}) {
+ ($myport, $myaddr) =
+ unpack_sockaddr_in(getsockname(SOCK));
+ $myname = gethostbyaddr($myaddr, AF_INET);
+ if ($myname eq "") {
+ $myname = inet_ntoa($myaddr);
+ }
+ $host = $myname;
+ }
+ else { $host = $config{'host'}; }
+ $port = $config{'port'};
+
+ local $switched = 0;
+ if ($config{'remoteuser'} && $localauth_user && !$<) {
+ # Switch to the UID of the remote user
+ local @u = getpwnam($localauth_user);
+ if (@u) {
+ $( = $u[3]; $) = "$u[3] $u[3]";
+ $< = $> = $u[2];
+ $switched = 1;
+ }
+ }
+ if ($config{'switchuser'} && !$< && !$switched) {
+ # Switch to the UID of server user
+ local @u = getpwnam($config{'switchuser'});
+ if (@u) {
+ $( = $u[3]; $) = "$u[3] $u[3]";
+ $< = $> = $u[2];
+ }
+ }
+
+ while(&handle_request($acptaddr, getsockname(SOCK))) { }
+ shutdown(SOCK, 1);
+ close(SOCK);
+ close($PASSINw); close($PASSOUTw);
+ exit;
+ }
+ push(@childpids, $handpid);
+ if ($config{'passdelay'} || $config{'session'}) {
+ close($PASSINw); close($PASSOUTr);
+ push(@passin, $PASSINr); push(@passout, $PASSOUTw);
+ }
+ close(SOCK);
+ }
+
+ if ($config{'listen'} && vec($rmask, fileno(LISTEN), 1)) {
+ # Got UDP packet from another webmin server
+ local $rcvbuf;
+ local $from = recv(LISTEN, $rcvbuf, 1024, 0);
+ next if (!$from);
+ local $fromip = inet_ntoa((unpack_sockaddr_in($from))[1]);
+ local $toip = inet_ntoa((unpack_sockaddr_in(
+ getsockname(LISTEN)))[1]);
+ if ((!@deny || !&ip_match($fromip, $toip, @deny)) &&
+ (!@allow || &ip_match($fromip, $toip, @allow))) {
+ send(LISTEN, "$config{'host'}:$config{'port'}:".
+ "$use_ssl", 0, $from);
+ }
+ }
+
+ # check for password-timeout messages from subprocesses
+ for($i=0; $i<@passin; $i++) {
+ if (vec($rmask, fileno($passin[$i]), 1)) {
+ # this sub-process is asking about a password
+ $infd = $passin[$i]; $outfd = $passout[$i];
+ $inline = <$infd>;
+ if ($inline =~ /^delay\s+(\S+)\s+(\S+)\s+(\d+)/) {
+ # Got a delay request from a subprocess.. for
+ # valid logins, there is no delay (to prevent
+ # denial of service attacks), but for invalid
+ # logins the delay increases with each failed
+ # attempt.
+ if ($3) {
+ # login OK.. no delay
+ print $outfd "0 0\n";
+ $hostfail{$2} = 0;
+ }
+ else {
+ # login failed..
+ $hostfail{$2}++;
+ # add the host to the block list if necessary
+ if ($config{'blockhost_failures'} &&
+ $hostfail{$2} >= $config{'blockhost_failures'}) {
+ push(@deny, $2);
+ $blockhosttime{$2} = $time_now;
+ $blocked = 1;
+ if ($use_syslog) {
+ local $logtext = "Security alert: Host $2 ".
+ "blocked after $config{'blockhost_failures'} ".
+ "failed logins for user $1";
+ syslog("crit", $logtext);
+ }
+ }
+ else {
+ $blocked = 0;
+ }
+ $dl = $userdlay{$1} -
+ int(($time_now - $userlast{$1})/50);
+ $dl = $dl < 0 ? 0 : $dl+1;
+ print $outfd "$dl $blocked\n";
+ $userdlay{$1} = $dl;
+ }
+ $userlast{$1} = $time_now;
+ }
+ elsif ($inline =~ /^verify\s+(\S+)/) {
+ # Verifying a session ID
+ local $session_id = $1;
+ if (!defined($sessiondb{$session_id})) {
+ print $outfd "0 0\n";
+ }
+ else {
+ local ($user, $ltime) = split(/\s+/, $sessiondb{$session_id});
+ if ($config{'logouttime'} &&
+ $time_now - $ltime > $config{'logouttime'}*60) {
+ print $outfd "1 ",$time_now - $ltime,"\n";
+ delete($sessiondb{$session_id});
+ }
+ else {
+ print $outfd "2 $user\n";
+ $sessiondb{$session_id} = "$user $time_now";
+ }
+ }
+ }
+ elsif ($inline =~ /^new\s+(\S+)\s+(\S+)/) {
+ # Creating a new session
+ $sessiondb{$1} = "$2 $time_now";
+ }
+ elsif ($inline =~ /^delete\s+(\S+)/) {
+ # Logging out a session
+ print $outfd $sessiondb{$1} ? 1 : 0,"\n";
+ delete($sessiondb{$1});
+ }
+ else {
+ # close pipe
+ close($infd); close($outfd);
+ $passin[$i] = $passout[$i] = undef;
+ }
+ }
+ }
+ @passin = grep { defined($_) } @passin;
+ @passout = grep { defined($_) } @passout;
+ }
+
+# handle_request(remoteaddress, localaddress)
+# Where the real work is done
+sub handle_request
+{
+$acptip = inet_ntoa((unpack_sockaddr_in($_[0]))[1]);
+$localip = $_[1] ? inet_ntoa((unpack_sockaddr_in($_[1]))[1]) : undef;
+if ($config{'loghost'}) {
+ $acpthost = gethostbyaddr(inet_aton($acptip), AF_INET);
+ $acpthost = $acptip if (!$acpthost);
+ }
+else {
+ $acpthost = $acptip;
+ }
+$datestr = &http_date(time());
+$ok_code = 200;
+$ok_message = "Document follows";
+
+# Wait at most 60 secs for start of headers (but only for the first time)
+if (!$checked_timeout) {
+ local $rmask;
+ vec($rmask, fileno(SOCK), 1) = 1;
+ local $sel = select($rmask, undef, undef, 60);
+ $sel || &http_error(400, "Timeout");
+ $checked_timeout++;
+ }
+
+# Read the HTTP request and headers
+($reqline = &read_line()) =~ s/\r|\n//g;
+if (!($reqline =~ /^(GET|POST|HEAD)\s+(.*)\s+HTTP\/1\..$/)) {
+ &http_error(400, "Bad Request");
+ }
+$method = $1; $request_uri = $page = $2;
+%header = ();
+local $lastheader;
+while(1) {
+ ($headline = &read_line()) =~ s/\r|\n//g;
+ last if ($headline eq "");
+ if ($headline =~ /^(\S+):\s+(.*)$/) {
+ $header{$lastheader = lc($1)} = $2;
+ }
+ elsif ($headline =~ /^\s+(.*)$/) {
+ $header{$lastheader} .= $headline;
+ }
+ else {
+ &http_error(400, "Bad Header $headline");
+ }
+ }
+if (defined($header{'host'})) {
+ if ($header{'host'} =~ /^([^:]+):([0-9]+)$/) { $host = $1; $port = $2; }
+ else { $host = $header{'host'}; }
+ }
+undef(%in);
+if ($page =~ /^([^\?]+)\?(.*)$/) {
+ # There is some query string information
+ $page = $1;
+ $querystring = $2;
+ if ($querystring !~ /=/) {
+ $queryargs = $querystring;
+ $queryargs =~ s/\+/ /g;
+ $queryargs =~ s/%(..)/pack("c",hex($1))/ge;
+ $querystring = "";
+ }
+ else {
+ # Parse query-string parameters
+ local @in = split(/\&/, $querystring);
+ foreach $i (@in) {
+ local ($k, $v) = split(/=/, $i, 2);
+ $k =~ s/\+/ /g; $k =~ s/%(..)/pack("c",hex($1))/ge;
+ $v =~ s/\+/ /g; $v =~ s/%(..)/pack("c",hex($1))/ge;
+ $in{$k} = $v;
+ }
+ }
+ }
+$posted_data = undef;
+if ($method eq 'POST' &&
+ $header{'content-type'} eq 'application/x-www-form-urlencoded') {
+ # Read in posted query string information
+ $clen = $header{"content-length"};
+ while(length($posted_data) < $clen) {
+ $buf = &read_data($clen - length($posted_data));
+ if (!length($buf)) {
+ &http_error(500, "Failed to read POST request");
+ }
+ $posted_data .= $buf;
+ }
+ local @in = split(/\&/, $posted_data);
+ foreach $i (@in) {
+ local ($k, $v) = split(/=/, $i, 2);
+ $k =~ s/\+/ /g; $k =~ s/%(..)/pack("c",hex($1))/ge;
+ $v =~ s/\+/ /g; $v =~ s/%(..)/pack("c",hex($1))/ge;
+ $in{$k} = $v;
+ }
+ }
+
+# replace %XX sequences in page
+$page =~ s/%(..)/pack("c",hex($1))/ge;
+
+# check address against access list
+if (@deny && &ip_match($acptip, $localip, @deny) ||
+ @allow && !&ip_match($acptip, $localip, @allow)) {
+ &http_error(403, "Access denied for $acptip");
+ return 0;
+ }
+
+if ($use_libwrap) {
+ # Check address with TCP-wrappers
+ if (!hosts_ctl("webmin", STRING_UNKNOWN, $acptip, STRING_UNKNOWN)) {
+ &http_error(403, "Access denied for $acptip");
+ return 0;
+ }
+ }
+
+# check for the logout flag file, and if existant deny authentication
+if ($config{'logout'} && -r $config{'logout'}.$in{'miniserv_logout_id'}) {
+ $deny_authentication++;
+ open(LOGOUT, $config{'logout'}.$in{'miniserv_logout_id'});
+ chop($count = <LOGOUT>);
+ close(LOGOUT);
+ $count--;
+ if ($count > 0) {
+ open(LOGOUT, ">$config{'logout'}$in{'miniserv_logout_id'}");
+ print LOGOUT "$count\n";
+ close(LOGOUT);
+ }
+ else {
+ unlink($config{'logout'}.$in{'miniserv_logout_id'});
+ }
+ }
+
+# Check for password if needed
+if (%users) {
+ $validated = 0;
+ $blocked = 0;
+
+ # Session authentication is never used for connections by
+ # another webmin server
+ if ($header{'user-agent'} =~ /webmin/i) {
+ $config{'session'} = 0;
+ }
+
+ # check for SSL authentication
+ if ($use_ssl && $verified_client) {
+ $peername = Net::SSLeay::X509_NAME_oneline(
+ Net::SSLeay::X509_get_subject_name(
+ Net::SSLeay::get_peer_certificate(
+ $ssl_con)));
+ foreach $u (keys %certs) {
+ if ($certs{$u} eq $peername) {
+ $authuser = $u;
+ $validated = 2;
+ last;
+ }
+ }
+ }
+
+ # Check for normal HTTP authentication
+ if (!$validated && !$deny_authentication && !$config{'session'} &&
+ $header{authorization} =~ /^basic\s+(\S+)$/i) {
+ # authorization given..
+ ($authuser, $authpass) = split(/:/, &b64decode($1));
+ $validated = &validate_user($authuser, $authpass);
+
+ if ($config{'passdelay'} && !$config{'inetd'}) {
+ # check with main process for delay
+ print $PASSINw "delay $authuser $acptip $validated\n";
+ <$PASSOUTr> =~ /(\d+) (\d+)/;
+ $blocked = $2;
+ sleep($1);
+ }
+ }
+
+ # Check for new session validation
+ if ($config{'session'} && !$deny_authentication && $page eq $config{'session_login'}) {
+ local $ok = &validate_user($in{'user'}, $in{'pass'});
+
+ # check if the test cookie is set
+ if ($header{'cookie'} !~ /testing=1/ && $in{'user'}) {
+ &http_error(500, "No cookies",
+ "Your browser does not support cookies, ".
+ "which are required for Webmin to work in ".
+ "session authentication mode");
+ }
+
+ # check with main process for delay
+ if ($config{'passdelay'} && $in{'user'}) {
+ print $PASSINw "delay $in{'user'} $acptip $ok\n";
+ <$PASSOUTr> =~ /(\d+) (\d+)/;
+ $blocked = $2;
+ sleep($1);
+ }
+
+ if ($ok) {
+ # Logged in OK! Tell the main process about the new SID
+ local $sid = time();
+ local $mul = 1;
+ foreach $c (split(//, crypt($in{'pass'}, substr($$, -2)))) {
+ $sid += ord($c) * $mul;
+ $mul *= 3;
+ }
+ print $PASSINw "new $sid $in{'user'}\n";
+
+ # Set cookie and redirect
+ &write_data("HTTP/1.0 302 Moved Temporarily\r\n");
+ &write_data("Date: $datestr\r\n");
+ &write_data("Server: $config{'server'}\r\n");
+ $portstr = $port == 80 && !$use_ssl ? "" :
+ $port == 443 && $use_ssl ? "" : ":$port";
+ $prot = $use_ssl ? "https" : "http";
+ if ($in{'save'}) {
+ &write_data("Set-Cookie: sid=$sid; path=/; expires=\"Fri, 1-Jan-2038 00:00:01\"\r\n");
+ }
+ else {
+ &write_data("Set-Cookie: sid=$sid; path=/\r\n");
+ }
+ &write_data("Location: $prot://$host$portstr$in{'page'}\r\n");
+ &write_keep_alive(0);
+ &write_data("\r\n");
+ &log_request($acpthost, $authuser, $reqline, 302, 0);
+ return 0;
+ }
+ elsif ($in{'logout'} && $header{'cookie'} =~ /sid=(\d+)/) {
+ # Logout clicked .. remove the session
+ print $PASSINw "delete $1\n";
+ local $dummy = <$PASSINr>;
+ $logout = 1;
+ $already_session_id = undef;
+ }
+ else {
+ # Login failed .. display the form again
+ $failed_user = $in{'user'};
+ $request_uri = $in{'page'};
+ $already_session_id = undef;
+ }
+ }
+
+ # Check for an existing session
+ if ($config{'session'} && !$validated) {
+ if ($already_session_id) {
+ $session_id = $already_session_id;
+ $authuser = $already_authuser;
+ $validated = 1;
+ }
+ elsif (!$deny_authentication && $header{'cookie'} =~ /sid=(\d+)/) {
+ $session_id = $1;
+ print $PASSINw "verify $session_id\n";
+ <$PASSOUTr> =~ /(\d+)\s+(\S+)/;
+ if ($1 == 2) {
+ # Valid session continuation
+ $validated = 1;
+ $authuser = $2;
+ $already_session_id = $session_id;
+ $already_authuser = $authuser;
+ }
+ elsif ($1 == 1) {
+ # Session timed out
+ $timed_out = $2;
+ }
+ else {
+ # Invalid session ID .. don't set verified
+ }
+ }
+ }
+
+ # Check for local authentication
+ if ($localauth_user) {
+ if (defined($users{$localauth_user})) {
+ $validated = 1;
+ $authuser = $localauth_user;
+ }
+ else {
+ $localauth_user = undef;
+ }
+ }
+
+ if (!$validated) {
+ if ($blocked == 0) {
+ # No password given.. ask
+ if ($config{'session'}) {
+ # Force CGI for session login
+ $validated = 1;
+ if ($logout) {
+ $querystring .= "&logout=1&page=/";
+ }
+ else {
+ $querystring = "page=".&urlize($request_uri);
+ }
+ $querystring .= "&failed=$failed_user" if ($failed_user);
+ $querystring .= "&timed_out=$timed_out" if ($timed_out);
+ $queryargs = "";
+ $page = $config{'session_login'};
+ }
+ else {
+ # Ask for login with HTTP authentication
+ &write_data("HTTP/1.0 401 Unauthorized\r\n");
+ &write_data("Date: $datestr\r\n");
+ &write_data("Server: $config{'server'}\r\n");
+ &write_data("WWW-authenticate: Basic ".
+ "realm=\"$config{'realm'}\"\r\n");
+ &write_keep_alive(0);
+ &write_data("Content-type: text/html\r\n");
+ &write_data("\r\n");
+ &reset_byte_count();
+ &write_data("<html>\n");
+ &write_data("<head><title>Unauthorized</title></head>\n");
+ &write_data("<body><h1>Unauthorized</h1>\n");
+ &write_data("A password is required to access this\n");
+ &write_data("web server. Please try again. <p>\n");
+ &write_data("</body></html>\n");
+ &log_request($acpthost, undef, $reqline, 401, &byte_count());
+ return 0;
+ }
+ }
+ else {
+ # when the host has been blocked, give it an error message
+ &http_error(403, "Access denied for $acptip. The host has been blocked "
+ ."because of too many authentication failures.");
+ }
+ }
+
+ # Check per-user IP access control
+ if ($deny{$authuser} && &ip_match($acptip, $localip, @{$deny{$authuser}}) ||
+ $allow{$authuser} && !&ip_match($acptip, $localip, @{$allow{$authuser}})) {
+ &http_error(403, "Access denied for $acptip");
+ return 0;
+ }
+ }
+
+# Figure out what kind of page was requested
+rerun:
+$simple = &simplify_path($page, $bogus);
+$simple =~ s/[\000-\037]//g;
+if ($bogus) {
+ &http_error(400, "Invalid path");
+ }
+undef($full);
+if ($config{'preroot'}) {
+ # Look in the template root directory first
+ $is_directory = 1;
+ $sofar = "";
+ $full = $config{"preroot"} . $sofar;
+ $scriptname = $simple;
+ foreach $b (split(/\//, $simple)) {
+ if ($b ne "") { $sofar .= "/$b"; }
+ $full = $config{"preroot"} . $sofar;
+ @st = stat($full);
+ if (!@st) { undef($full); last; }
+
+ # Check if this is a directory
+ if (-d $full) {
+ # It is.. go on parsing
+ $is_directory = 1;
+ next;
+ }
+ else { $is_directory = 0; }
+
+ # Check if this is a CGI program
+ if (&get_type($full) eq "internal/cgi") {
+ $pathinfo = substr($simple, length($sofar));
+ $pathinfo .= "/" if ($page =~ /\/$/);
+ $scriptname = $sofar;
+ last;
+ }
+ }
+ if ($full) {
+ if ($sofar eq '') {
+ $cgi_pwd = $config{'root'};
+ }
+ else {
+ "$config{'root'}$sofar" =~ /^(.*\/)[^\/]+$/;
+ $cgi_pwd = $1;
+ }
+ if ($is_directory) {
+ # Check for index files in the directory
+ foreach $idx (split(/\s+/, $config{"index_docs"})) {
+ $idxfull = "$full/$idx";
+ if (-r $idxfull && !(-d $idxfull)) {
+ $full = $idxfull;
+ $is_directory = 0;
+ $scriptname .= "/"
+ if ($scriptname ne "/");
+ last;
+ }
+ }
+ }
+ }
+ }
+if (!$full || $is_directory) {
+ $sofar = "";
+ $full = $config{"root"} . $sofar;
+ $scriptname = $simple;
+ foreach $b (split(/\//, $simple)) {
+ if ($b ne "") { $sofar .= "/$b"; }
+ $full = $config{"root"} . $sofar;
+ @st = stat($full);
+ if (!@st) { &http_error(404, "File not found"); }
+
+ # Check if this is a directory
+ if (-d $full) {
+ # It is.. go on parsing
+ next;
+ }
+
+ # Check if this is a CGI program
+ if (&get_type($full) eq "internal/cgi") {
+ $pathinfo = substr($simple, length($sofar));
+ $pathinfo .= "/" if ($page =~ /\/$/);
+ $scriptname = $sofar;
+ last;
+ }
+ }
+ $full =~ /^(.*\/)[^\/]+$/; $cgi_pwd = $1;
+ }
+
+# check filename against denyfile regexp
+local $denyfile = $config{'denyfile'};
+if ($denyfile && $full =~ /$denyfile/) {
+ &http_error(403, "Access denied to $page");
+ return 0;
+ }
+
+# Reached the end of the path OK.. see what we've got
+if (-d $full) {
+ # See if the URL ends with a / as it should
+ if ($page !~ /\/$/) {
+ # It doesn't.. redirect
+ &write_data("HTTP/1.0 302 Moved Temporarily\r\n");
+ $portstr = $port == 80 && !$use_ssl ? "" :
+ $port == 443 && $use_ssl ? "" : ":$port";
+ &write_data("Date: $datestr\r\n");
+ &write_data("Server: $config{server}\r\n");
+ $prot = $use_ssl ? "https" : "http";
+ &write_data("Location: $prot://$host$portstr$page/\r\n");
+ &write_keep_alive(0);
+ &write_data("\r\n");
+ &log_request($acpthost, $authuser, $reqline, 302, 0);
+ return 0;
+ }
+ # A directory.. check for index files
+ foreach $idx (split(/\s+/, $config{"index_docs"})) {
+ $idxfull = "$full/$idx";
+ if (-r $idxfull && !(-d $idxfull)) {
+ $cgi_pwd = $full;
+ $full = $idxfull;
+ $scriptname .= "/" if ($scriptname ne "/");
+ last;
+ }
+ }
+ }
+if (-d $full) {
+ # This is definately a directory.. list it
+ &write_data("HTTP/1.0 $ok_code $ok_message\r\n");
+ &write_data("Date: $datestr\r\n");
+ &write_data("Server: $config{server}\r\n");
+ &write_data("Content-type: text/html\r\n");
+ &write_keep_alive(0);
+ &write_data("\r\n");
+ &reset_byte_count();
+ &write_data("<h1>Index of $simple</h1>\n");
+ &write_data("<pre>\n");
+ &write_data(sprintf "%-35.35s %-20.20s %-10.10s\n",
+ "Name", "Last Modified", "Size");
+ &write_data("<hr>\n");
+ opendir(DIR, $full);
+ while($df = readdir(DIR)) {
+ if ($df =~ /^\./) { next; }
+ (@stbuf = stat("$full/$df")) || next;
+ if (-d "$full/$df") { $df .= "/"; }
+ @tm = localtime($stbuf[9]);
+ $fdate = sprintf "%2.2d/%2.2d/%4.4d %2.2d:%2.2d:%2.2d",
+ $tm[3],$tm[4]+1,$tm[5]+1900,
+ $tm[0],$tm[1],$tm[2];
+ $len = length($df); $rest = " "x(35-$len);
+ &write_data(sprintf
+ "<a href=\"%s\">%-${len}.${len}s</a>$rest %-20.20s %-10.10s\n",
+ $df, $df, $fdate, $stbuf[7]);
+ }
+ closedir(DIR);
+ &log_request($acpthost, $authuser, $reqline, $ok_code, &byte_count());
+ return 0;
+ }
+
+# CGI or normal file
+local $rv;
+if (&get_type($full) eq "internal/cgi") {
+ # A CGI program to execute
+ $envtz = $ENV{"TZ"};
+ $envuser = $ENV{"USER"};
+ $envpath = $ENV{"PATH"};
+ foreach (keys %ENV) { delete($ENV{$_}); }
+ $ENV{"PATH"} = $envpath if ($envpath);
+ $ENV{"TZ"} = $envtz if ($envtz);
+ $ENV{"USER"} = $envuser if ($envuser);
+ $ENV{"HOME"} = $user_homedir;
+ $ENV{"SERVER_SOFTWARE"} = $config{"server"};
+ $ENV{"SERVER_NAME"} = $host;
+ $ENV{"SERVER_ADMIN"} = $config{"email"};
+ $ENV{"SERVER_ROOT"} = $config{"root"};
+ $ENV{"SERVER_PORT"} = $port;
+ $ENV{"REMOTE_HOST"} = $acpthost;
+ $ENV{"REMOTE_ADDR"} = $acptip;
+ $ENV{"REMOTE_USER"} = $authuser if (defined($authuser));
+ $ENV{"SSL_USER"} = $peername if ($validated == 2);
+ $ENV{"DOCUMENT_ROOT"} = $config{"root"};
+ $ENV{"GATEWAY_INTERFACE"} = "CGI/1.1";
+ $ENV{"SERVER_PROTOCOL"} = "HTTP/1.0";
+ $ENV{"REQUEST_METHOD"} = $method;
+ $ENV{"SCRIPT_NAME"} = $scriptname;
+ $ENV{"REQUEST_URI"} = $request_uri;
+ $ENV{"PATH_INFO"} = $pathinfo;
+ $ENV{"PATH_TRANSLATED"} = "$config{root}/$pathinfo";
+ $ENV{"QUERY_STRING"} = $querystring;
+ $ENV{"MINISERV_CONFIG"} = $conf;
+ $ENV{"HTTPS"} = "ON" if ($use_ssl);
+ $ENV{"SESSION_ID"} = $session_id if ($session_id);
+ $ENV{"LOCAL_USER"} = $localauth_user if ($localauth_user);
+ if (defined($header{"content-length"})) {
+ $ENV{"CONTENT_LENGTH"} = $header{"content-length"};
+ }
+ if (defined($header{"content-type"})) {
+ $ENV{"CONTENT_TYPE"} = $header{"content-type"};
+ }
+ foreach $h (keys %header) {
+ ($hname = $h) =~ tr/a-z/A-Z/;
+ $hname =~ s/\-/_/g;
+ $ENV{"HTTP_$hname"} = $header{$h};
+ }
+ $ENV{"PWD"} = $cgi_pwd;
+ foreach $k (keys %config) {
+ if ($k =~ /^env_(\S+)$/) {
+ $ENV{$1} = $config{$k};
+ }
+ }
+ delete($ENV{'HTTP_AUTHORIZATION'});
+ $ENV{'HTTP_COOKIE'} =~ s/;?\s*sid=(\d+)//;
+
+ # Check if the CGI can be handled internally
+ open(CGI, $full);
+ local $first = <CGI>;
+ close(CGI);
+ $first =~ s/[#!\r\n]//g;
+ $nph_script = ($full =~ /\/nph-([^\/]+)$/);
+ if (!$config{'forkcgis'} && $first eq $perl_path && $] >= 5.004) {
+ # setup environment for eval
+ chdir($ENV{"PWD"});
+ @ARGV = split(/\s+/, $queryargs);
+ $0 = $full;
+ if ($posted_data) {
+ # Already read the post input
+ $postinput = $posted_data;
+ }
+ elsif ($method eq "POST") {
+ $clen = $header{"content-length"};
+ while(length($postinput) < $clen) {
+ $buf = &read_data($clen - length($postinput));
+ if (!length($buf)) {
+ &http_error(500, "Failed to read ".
+ "POST request");
+ }
+ $postinput .= $buf;
+ }
+ }
+ $SIG{'CHLD'} = 'DEFAULT';
+ eval {
+ # Have SOCK closed if the perl exec's something
+ use Fcntl;
+ fcntl(SOCK, F_SETFD, FD_CLOEXEC);
+ };
+ shutdown(SOCK, 0);
+
+ if ($config{'log'}) {
+ open(MINISERVLOG, ">>$config{'logfile'}");
+ chmod(0600, $config{'logfile'});
+ }
+ $doing_eval = 1;
+ eval {
+ package main;
+ tie(*STDOUT, 'miniserv');
+ tie(*STDIN, 'miniserv');
+ do $miniserv::full;
+ die $@ if ($@);
+ };
+ $doing_eval = 0;
+ if ($@) {
+ # Error in perl!
+ &http_error(500, "Perl execution failed", $@);
+ }
+ elsif (!$doneheaders && !$nph_script) {
+ &http_error(500, "Missing Headers");
+ }
+ #close(SOCK);
+ $rv = 0;
+ }
+ else {
+ # fork the process that actually executes the CGI
+ pipe(CGIINr, CGIINw);
+ pipe(CGIOUTr, CGIOUTw);
+ pipe(CGIERRr, CGIERRw);
+ if (!($cgipid = fork())) {
+ chdir($ENV{"PWD"});
+ close(SOCK);
+ open(STDIN, "<&CGIINr");
+ open(STDOUT, ">&CGIOUTw");
+ open(STDERR, ">&CGIERRw");
+ close(CGIINw); close(CGIOUTr); close(CGIERRr);
+ exec($full, split(/\s+/, $queryargs));
+ print STDERR "Failed to exec $full : $!\n";
+ exit;
+ }
+ close(CGIINr); close(CGIOUTw); close(CGIERRw);
+
+ # send post data
+ if ($posted_data) {
+ # already read the posted data
+ print CGIINw $posted_data;
+ }
+ elsif ($method eq "POST") {
+ $got = 0; $clen = $header{"content-length"};
+ while($got < $clen) {
+ $buf = &read_data($clen-$got);
+ if (!length($buf)) {
+ kill('TERM', $cgipid);
+ &http_error(500, "Failed to read ".
+ "POST request");
+ }
+ $got += length($buf);
+ print CGIINw $buf;
+ }
+ }
+ close(CGIINw);
+ shutdown(SOCK, 0);
+
+ if (!$nph_script) {
+ # read back cgi headers
+ select(CGIOUTr); $|=1; select(STDOUT);
+ $got_blank = 0;
+ while(1) {
+ $line = <CGIOUTr>;
+ $line =~ s/\r|\n//g;
+ if ($line eq "") {
+ if ($got_blank || %cgiheader) { last; }
+ $got_blank++;
+ next;
+ }
+ ($line =~ /^(\S+):\s+(.*)$/) ||
+ &http_error(500, "Bad Header",
+ &read_errors(CGIERRr));
+ $cgiheader{lc($1)} = $2;
+ }
+ if ($cgiheader{"location"}) {
+ &write_data("HTTP/1.0 302 Moved Temporarily\r\n");
+ &write_data("Date: $datestr\r\n");
+ &write_data("Server: $config{'server'}\r\n");
+ &write_keep_alive(0);
+ # ignore the rest of the output. This is a hack, but
+ # is necessary for IE in some cases :(
+ close(CGIOUTr); close(CGIERRr);
+ }
+ elsif ($cgiheader{"content-type"} eq "") {
+ &http_error(500, "Missing Content-Type Header",
+ &read_errors(CGIERRr));
+ }
+ else {
+ &write_data("HTTP/1.0 $ok_code $ok_message\r\n");
+ &write_data("Date: $datestr\r\n");
+ &write_data("Server: $config{'server'}\r\n");
+ &write_keep_alive(0);
+ }
+ foreach $h (keys %cgiheader) {
+ &write_data("$h: $cgiheader{$h}\r\n");
+ }
+ &write_data("\r\n");
+ }
+ &reset_byte_count();
+ while($line = <CGIOUTr>) {
+ &write_data($line);
+ }
+ close(CGIOUTr); close(CGIERRr);
+ $rv = 0;
+ }
+ }
+else {
+ # A file to output
+ local @st = stat($full);
+ open(FILE, $full) || &http_error(404, "Failed to open file");
+ &write_data("HTTP/1.0 $ok_code $ok_message\r\n");
+ &write_data("Date: $datestr\r\n");
+ &write_data("Server: $config{server}\r\n");
+ &write_data("Content-type: ".&get_type($full)."\r\n");
+ &write_data("Content-length: $st[7]\r\n");
+ &write_data("Last-Modified: ".&http_date($st[9])."\r\n");
+ &write_keep_alive();
+ &write_data("\r\n");
+ &reset_byte_count();
+ while(read(FILE, $buf, 1024) > 0) {
+ &write_data($buf);
+ }
+ close(FILE);
+ $rv = &check_keep_alive();
+ }
+
+# log the request
+&log_request($acpthost, $authuser, $reqline,
+ $cgiheader{"location"} ? "302" : $ok_code, &byte_count());
+return $rv;
+}
+
+# http_error(code, message, body, [dontexit])
+sub http_error
+{
+close(CGIOUT);
+local $eh = $error_handler_recurse ? undef :
+ $config{"error_handler_$_[0]"} ? $config{"error_handler_$_[0]"} :
+ $config{'error_handler'} ? $config{'error_handler'} : undef;
+if ($eh) {
+ # Call a CGI program for the error
+ $page = "/$eh";
+ $querystring = "code=$_[0]&message=".&urlize($_[1]).
+ "&body=".&urlize($_[2]);
+ $error_handler_recurse++;
+ $ok_code = $_[0];
+ $ok_message = $_[1];
+ goto rerun;
+ }
+else {
+ # Use the standard error message display
+ &write_data("HTTP/1.0 $_[0] $_[1]\r\n");
+ &write_data("Server: $config{server}\r\n");
+ &write_data("Date: $datestr\r\n");
+ &write_data("Content-type: text/html\r\n");
+ &write_keep_alive(0);
+ &write_data("\r\n");
+ &reset_byte_count();
+ &write_data("<h1>Error - $_[1]</h1>\n");
+ if ($_[2]) {
+ &write_data("<pre>$_[2]</pre>\n");
+ }
+ }
+&log_request($acpthost, $authuser, $reqline, $_[0], &byte_count())
+ if ($reqline);
+shutdown(SOCK, 1);
+exit if (!$_[3]);
+}
+
+sub get_type
+{
+if ($_[0] =~ /\.([A-z0-9]+)$/) {
+ $t = $mime{$1};
+ if ($t ne "") {
+ return $t;
+ }
+ }
+return "text/plain";
+}
+
+# simplify_path(path, bogus)
+# Given a path, maybe containing stuff like ".." and "." convert it to a
+# clean, absolute form.
+sub simplify_path
+{
+local($dir, @bits, @fixedbits, $b);
+$dir = $_[0];
+$dir =~ s/^\/+//g;
+$dir =~ s/\/+$//g;
+@bits = split(/\/+/, $dir);
+@fixedbits = ();
+$_[1] = 0;
+foreach $b (@bits) {
+ if ($b eq ".") {
+ # Do nothing..
+ }
+ elsif ($b eq "..") {
+ # Remove last dir
+ if (scalar(@fixedbits) == 0) {
+ $_[1] = 1;
+ return "/";
+ }
+ pop(@fixedbits);
+ }
+ else {
+ # Add dir to list
+ push(@fixedbits, $b);
+ }
+ }
+return "/" . join('/', @fixedbits);
+}
+
+# b64decode(string)
+# Converts a string from base64 format to normal
+sub b64decode
+{
+ local($str) = $_[0];
+ local($res);
+ $str =~ tr|A-Za-z0-9+=/||cd;
+ $str =~ s/=+$//;
+ $str =~ tr|A-Za-z0-9+/| -_|;
+ while ($str =~ /(.{1,60})/gs) {
+ my $len = chr(32 + length($1)*3/4);
+ $res .= unpack("u", $len . $1 );
+ }
+ return $res;
+}
+
+# ip_match(remoteip, localip, [match]+)
+# Checks an IP address against a list of IPs, networks and networks/masks
+sub ip_match
+{
+local(@io, @mo, @ms, $i, $j);
+@io = split(/\./, $_[0]);
+local $hn;
+if (!defined($hn = $ip_match_cache{$_[0]})) {
+ $hn = gethostbyaddr(inet_aton($_[0]), AF_INET);
+ $hn = "" if ((&to_ipaddress($hn))[0] ne $_[0]);
+ $ip_match_cache{$_[0]} = $hn;
+ }
+for($i=2; $i<@_; $i++) {
+ local $mismatch = 0;
+ if ($_[$i] =~ /^(\S+)\/(\S+)$/) {
+ # Compare with network/mask
+ @mo = split(/\./, $1); @ms = split(/\./, $2);
+ for($j=0; $j<4; $j++) {
+ if ((int($io[$j]) & int($ms[$j])) != int($mo[$j])) {
+ $mismatch = 1;
+ }
+ }
+ }
+ elsif ($_[$i] =~ /^\*(\S+)$/) {
+ # Compare with hostname regexp
+ $mismatch = 1 if ($hn !~ /$1$/);
+ }
+ elsif ($_[$i] eq 'LOCAL') {
+ # Compare with local network
+ local @lo = split(/\./, $_[1]);
+ if ($lo[0] < 128) {
+ $mismatch = 1 if ($lo[0] != $io[0]);
+ }
+ elsif ($lo[0] < 192) {
+ $mismatch = 1 if ($lo[0] != $io[0] ||
+ $lo[1] != $io[1]);
+ }
+ else {
+ $mismatch = 1 if ($lo[0] != $io[0] ||
+ $lo[1] != $io[1] ||
+ $lo[2] != $io[2]);
+ }
+ }
+ else {
+ # Compare with IP or network
+ @mo = split(/\./, $_[$i]);
+ while(@mo && !$mo[$#mo]) { pop(@mo); }
+ for($j=0; $j<@mo; $j++) {
+ if ($mo[$j] != $io[$j]) {
+ $mismatch = 1;
+ }
+ }
+ }
+ return 1 if (!$mismatch);
+ }
+return 0;
+}
+
+# restart_miniserv()
+# Called when a SIGHUP is received to restart the web server. This is done
+# by exec()ing perl with the same command line as was originally used
+sub restart_miniserv
+{
+close(SOCK); close(MAIN);
+foreach $p (@passin) { close($p); }
+foreach $p (@passout) { close($p); }
+if ($logclearer) { kill('TERM', $logclearer); }
+exec($perl_path, $miniserv_path, @miniserv_argv);
+die "Failed to restart miniserv with $perl_path $miniserv_path";
+}
+
+sub trigger_restart
+{
+$need_restart = 1;
+}
+
+sub to_ipaddress
+{
+local (@rv, $i);
+foreach $i (@_) {
+ if ($i =~ /(\S+)\/(\S+)/ || $i =~ /^\*\S+$/ ||
+ $i eq 'LOCAL') { push(@rv, $i); }
+ else { push(@rv, join('.', unpack("CCCC", inet_aton($i)))); }
+ }
+return @rv;
+}
+
+# read_line()
+# Reads one line from SOCK or SSL
+sub read_line
+{
+local($idx, $more, $rv);
+if ($use_ssl) {
+ while(($idx = index($read_buffer, "\n")) < 0) {
+ # need to read more..
+ if (!($more = Net::SSLeay::read($ssl_con))) {
+ # end of the data
+ $rv = $read_buffer;
+ undef($read_buffer);
+ return $rv;
+ }
+ $read_buffer .= $more;
+ }
+ $rv = substr($read_buffer, 0, $idx+1);
+ $read_buffer = substr($read_buffer, $idx+1);
+ return $rv;
+ }
+else { return <SOCK>; }
+}
+
+# read_data(length)
+# Reads up to some amount of data from SOCK or the SSL connection
+sub read_data
+{
+if ($use_ssl) {
+ local($rv);
+ if (length($read_buffer)) {
+ $rv = $read_buffer;
+ undef($read_buffer);
+ return $rv;
+ }
+ else {
+ return Net::SSLeay::read($ssl_con, $_[0]);
+ }
+ }
+else {
+ local $buf;
+ read(SOCK, $buf, $_[0]) || return undef;
+ return $buf;
+ }
+}
+
+# write_data(data)
+# Writes a string to SOCK or the SSL connection
+sub write_data
+{
+if ($use_ssl) {
+ Net::SSLeay::write($ssl_con, $_[0]);
+ }
+else {
+ syswrite(SOCK, $_[0], length($_[0]));
+ }
+$write_data_count += length($_[0]);
+}
+
+# reset_byte_count()
+sub reset_byte_count { $write_data_count = 0; }
+
+# byte_count()
+sub byte_count { return $write_data_count; }
+
+# log_request(hostname, user, request, code, bytes)
+sub log_request
+{
+if ($config{'log'}) {
+ local(@tm, $dstr, $user, $ident, $headers);
+ if ($config{'logident'}) {
+ # add support for rfc1413 identity checking here
+ }
+ else { $ident = "-"; }
+ @tm = localtime(time());
+ $dstr = sprintf "%2.2d/%s/%4.4d:%2.2d:%2.2d:%2.2d %s",
+ $tm[3], $make_date_marr[$tm[4]], $tm[5]+1900,
+ $tm[2], $tm[1], $tm[0], $timezone;
+ $user = $_[1] ? $_[1] : "-";
+ if (fileno(MINISERVLOG)) {
+ seek(MINISERVLOG, 0, 2);
+ }
+ else {
+ open(MINISERVLOG, ">>$config{'logfile'}");
+ chmod(0600, $config{'logfile'});
+ }
+ foreach $h (split(/\s+/, $config{'logheaders'})) {
+ $headers .= " $h=\"$header{$h}\"";
+ }
+ print MINISERVLOG "$_[0] $ident $user [$dstr] \"$_[2]\" ",
+ "$_[3] $_[4]$headers\n";
+ close(MINISERVLOG);
+ }
+}
+
+# read_errors(handle)
+# Read and return all input from some filehandle
+sub read_errors
+{
+local($fh, $_, $rv);
+$fh = $_[0];
+while(<$fh>) { $rv .= $_; }
+return $rv;
+}
+
+sub write_keep_alive
+{
+local $mode;
+if (@_) { $mode = $_[0]; }
+else { $mode = &check_keep_alive(); }
+&write_data("Connection: ".($mode ? "Keep-Alive" : "close")."\r\n");
+}
+
+sub check_keep_alive
+{
+return $header{'connection'} =~ /keep-alive/i;
+}
+
+sub term_handler
+{
+if (@childpids) {
+ kill('TERM', @childpids);
+ }
+exit(1);
+}
+
+sub http_date
+{
+local @tm = gmtime($_[0]);
+return sprintf "%s, %d %s %d %2.2d:%2.2d:%2.2d GMT",
+ $weekday[$tm[6]], $tm[3], $month[$tm[4]], $tm[5]+1900,
+ $tm[2], $tm[1], $tm[0];
+}
+
+sub TIEHANDLE
+{
+my $i; bless \$i, shift;
+}
+
+sub WRITE
+{
+$r = shift;
+my($buf,$len,$offset) = @_;
+&write_to_sock(substr($buf, $offset, $len));
+}
+
+sub PRINT
+{
+$r = shift;
+$$r++;
+&write_to_sock(@_);
+}
+
+sub PRINTF
+{
+shift;
+my $fmt = shift;
+&write_to_sock(sprintf $fmt, @_);
+}
+
+sub READ
+{
+$r = shift;
+substr($_[0], $_[2], $_[1]) = substr($postinput, $postpos, $_[1]);
+$postpos += $_[1];
+}
+
+sub OPEN
+{
+print STDERR "open() called - should never happen!\n";
+}
+
+sub READLINE
+{
+if ($postpos >= length($postinput)) {
+ return undef;
+ }
+local $idx = index($postinput, "\n", $postpos);
+if ($idx < 0) {
+ local $rv = substr($postinput, $postpos);
+ $postpos = length($postinput);
+ return $rv;
+ }
+else {
+ local $rv = substr($postinput, $postpos, $idx-$postpos+1);
+ $postpos = $idx+1;
+ return $rv;
+ }
+}
+
+sub GETC
+{
+return $postpos >= length($postinput) ? undef
+ : substr($postinput, $postpos++, 1);
+}
+
+sub CLOSE { }
+
+sub DESTROY { }
+
+# write_to_sock(data, ...)
+sub write_to_sock
+{
+foreach $d (@_) {
+ if ($doneheaders || $miniserv::nph_script) {
+ &write_data($d);
+ }
+ else {
+ $headers .= $d;
+ while(!$doneheaders && $headers =~ s/^(.*)(\r)?\n//) {
+ if ($1 =~ /^(\S+):\s+(.*)$/) {
+ $cgiheader{lc($1)} = $2;
+ }
+ elsif ($1 !~ /\S/) {
+ $doneheaders++;
+ }
+ else {
+ &http_error(500, "Bad Header");
+ }
+ }
+ if ($doneheaders) {
+ if ($cgiheader{"location"}) {
+ &write_data(
+ "HTTP/1.0 302 Moved Temporarily\r\n");
+ &write_data("Date: $datestr\r\n");
+ &write_data("Server: $config{server}\r\n");
+ &write_keep_alive(0);
+ }
+ elsif ($cgiheader{"content-type"} eq "") {
+ &http_error(500, "Missing Content-Type Header");
+ }
+ else {
+ &write_data("HTTP/1.0 $ok_code $ok_message\r\n");
+ &write_data("Date: $datestr\r\n");
+ &write_data("Server: $config{server}\r\n");
+ &write_keep_alive(0);
+ }
+ foreach $h (keys %cgiheader) {
+ &write_data("$h: $cgiheader{$h}\r\n");
+ }
+ &write_data("\r\n");
+ &reset_byte_count();
+ &write_data($headers);
+ }
+ }
+ }
+}
+
+sub verify_client
+{
+local $cert = Net::SSLeay::X509_STORE_CTX_get_current_cert($_[1]);
+if ($cert) {
+ local $errnum = Net::SSLeay::X509_STORE_CTX_get_error($_[1]);
+ $verified_client = 1 if (!$errnum);
+ }
+return 1;
+}
+
+sub END
+{
+if ($doing_eval) {
+ # A CGI program called exit! This is a horrible hack to
+ # finish up before really exiting
+ close(SOCK);
+ &log_request($acpthost, $authuser, $reqline,
+ $cgiheader{"location"} ? "302" : $ok_code, &byte_count());
+ }
+}
+
+# urlize
+# Convert a string to a form ok for putting in a URL
+sub urlize {
+ local($tmp, $tmp2, $c);
+ $tmp = $_[0];
+ $tmp2 = "";
+ while(($c = chop($tmp)) ne "") {
+ if ($c !~ /[A-z0-9]/) {
+ $c = sprintf("%%%2.2X", ord($c));
+ }
+ $tmp2 = $c . $tmp2;
+ }
+ return $tmp2;
+}
+
+# validate_user(username, password)
+sub validate_user
+{
+return 0 if (!$_[0] || !$users{$_[0]});
+if ($users{$_[0]} eq 'x' && $use_pam) {
+ $pam_username = $_[0];
+ $pam_password = $_[1];
+ local $pamh = new Authen::PAM("webmin", $pam_username, \&pam_conv_func);
+ if (!ref($pamh)) {
+ print STDERR "PAM init failed : $pamh\n";
+ return 0;
+ }
+ local $pam_ret = $pamh->pam_authenticate();
+ return $pam_ret == PAM_SUCCESS ? 1 : 0;
+ }
+else {
+ return $users{$_[0]} eq crypt($_[1], $users{$_[0]}) ? 1 : 0;
+ }
+}
+
+# the PAM conversation function for interactive logins
+sub pam_conv_func
+{
+my @res;
+while ( @_ ) {
+ my $code = shift;
+ my $msg = shift;
+ my $ans = "";
+
+ $ans = $pam_username if ($code == PAM_PROMPT_ECHO_ON() );
+ $ans = $pam_password if ($code == PAM_PROMPT_ECHO_OFF() );
+
+ push @res, PAM_SUCCESS();
+ push @res, $ans;
+ }
+push @res, PAM_SUCCESS();
+return @res;
+}
+