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#!/usr/bin/perl
# A very simple perl web server used by Webmin
# Require basic libraries
package miniserv;
use Socket;
use POSIX;
# 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", 8080,
"root", "./",
"server", "MiniServ/0.01",
"index_docs", "index.html index.htm index.cgi",
"addtype_html", "text/html",
"addtype_txt", "text/plain",
"addtype_cgi", "internal/cgi",
"addtype_gif", "image/gif",
"addtype_jpg", "image/jpeg",
"addtype_jpeg", "image/jpeg",
"realm", "MiniServ",
"session_login", "/session_login.cgi",
"userfile", ".users",
"maxconns", 30,
"pam", "webmin",
"session", 1,
"passdelay", 1,
"env_WEBMIN_CONFIG", "./",
"env_WEBMIN_VAR", "./",
);
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'} = "$1/sessiondb";
}
# init days and months for http_date
@weekday = ( "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" );
@month = ( "Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec" );
# Change dir to the server root
chdir($config{'root'});
# 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+/, $1)) ];
}
}
close(USERS);
}
# Read MIME types file and add extra types
if ($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;
}
# 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);
# Split from the controlling terminal
if (fork()) { exit; }
setsid();
# write out the PID file
open(PIDFILE, "> $config{'pidfile'}");
printf PIDFILE "%d\n", getpid();
close(PIDFILE);
# Setup the logout time dbm if needed
if ($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+/, $config{"allow"}));
if ($config{'allowusers'}) {
@allowusers = split(/\s+/, $config{'allowusers'});
}
elsif ($config{'denyusers'}) {
@denyusers = split(/\s+/, $config{'denyusers'});
}
$p = 0;
while(1) {
# wait for a new connection, or a message from a child process
undef($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 - $ltime > 7*24*60*60)
or ( ($config{'logouttime'}) &&
($time_now - $ltime > $config{'logouttime'}*60))) {
delete($sessiondb{$s});
}
}
}
next if ($sel <= 0);
if (vec($rmask, fileno(MAIN), 1)) {
# got new connection
$acptaddr = accept(SOCK, MAIN);
if (!$acptaddr) { next; }
# check for excessive connections
if (@childpids > $config{'maxconns'}) {
next;
}
# create pipes
if ($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);
$localauth_user = undef;
# fork the subprocess
if (!($handpid = fork())) {
# setup signal handlers
$SIG{'TERM'} = 'DEFAULT';
$SIG{'PIPE'} = 'DEFAULT';
#$SIG{'CHLD'} = 'IGNORE';
$SIG{'HUP'} = 'IGNORE';
# close useless pipes
if ($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 = $config{'port'};
while(&handle_request($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];
chomp($inline = <$infd>);
print STDERR "[DEBUG] <<< INLINE: $inline;\n";
if ($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+([a-z0-9]{5,})/) {
# 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+([a-z0-9]{5,})\s+(\S+)/) {
# Creating a new session
$sessiondb{$1} = "$2 $time_now";
print STDERR "[DEBUG] <<< NEW SESSION ID was CREATED: $2;\n";
}
elsif ($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
local $origreqline = &read_line();
($reqline = $origreqline) =~ s/\r|\n//g;
if ($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");
}
chomp($posted_data);
$posted_data =~ s/\015$//mg;
$posted_data .= $buf;
}
#$posted_data =~ s/\r|\n//g; # some browsers do this?
$posted_data = substr($posted_data, 0, $clen)
if (length($posted_data) > $clen);
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 $acptip");
return 0;
}
# check for the logout flag file, and if existant deny authentication
if ($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) {
$config{'session'} = 0;
}
# Check for normal HTTP authentication
if (!$validated && !$deny_authentication && !$config{'session'} &&
$header{authorization} =~ /^basic\s+(\S+)$/i) {
# authorization given..
($authuser, $authpass) = split(/:/, &b64decode($1));
$validated = &validate_user($authuser, $authpass);
if ($use_syslog) {
if (!$validated) {
syslog("crit", "Invalid login as $authuser from $acpthost");
}
}
if ($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/ && $in{'user'}) {
&http_error(500, "No cookies",
"Your browser does not support cookies, ".
"which are required for this web server to ".
"work in session authentication mode");
}
# check with main process for delay
if ($config{'passdelay'} && $in{'user'}) {
print STDERR "[DEBUG] >>> delay $in{'user'} $acptip $ok;\n";
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;
$SIG{ALRM} = "miniserv::urandom_timeout";
alarm(5);
if (open(RANDOM, "/dev/urandom")) {
my $tmpsid;
if (read(RANDOM, $tmpsid, 16) == 16) {
$sid = lc(unpack('h*', $tmpsid));
}
close(RANDOM);
}
alarm(0);
if (!$sid) {
$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);
syslog("info", "Successful login as $in{'user'} from $acpthost") if ($use_syslog);
return 0;
}
elsif ($in{'logout'} && $header{'cookie'} =~ /sid=([a-f0-9]{32}|\d+)/) {
# Logout clicked .. remove the session
print $PASSINw "delete $1\n";
local $dummy = <$PASSINr>;
$logout = 1;
$already_session_id = undef;
if ($use_syslog) {
syslog("info", "Logout from $acpthost");
}
$authuser = $baseauthuser = undef;
}
else {
# Login failed .. display the form again
$failed_user = $in{'user'};
$request_uri = $in{'page'};
$already_session_id = undef;
$method = "GET";
$authuser = $baseauthuser = undef;
syslog("crit", "Invalid login as $in{'user'} from $acpthost") if ($use_syslog);
}
}
# 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=([a-z0-9]{5,})/) {
$session_id = $1;
print $PASSINw "verify $session_id\n";
<$PASSOUTr> =~ /(\d+)\s+(\S+)/;
print STDERR "[DEBUG] >>> verify $session_id = $1;\n";
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
}
}
}
if (!$validated && $page =~ /admin/i) {
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);
}
$method = "GET";
$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.");
}
}
else {
# If we are using unixauth, keep the 'real' username
if ($config{'unixauth'} && !$users{$authuser}) {
$baseauthuser = $config{'unixauth'};
}
else {
$baseauthuser = $authuser;
}
if ($config{'remoteuser'} && !$< && $validated) {
# Switch to the UID of the remote user (if he exists)
local @u = getpwnam($authuser);
if (@u && $< != $u[2]) {
$( = $u[3]; $) = "$u[3] $u[3]";
($>, $<) = ($u[2], $u[2]);
}
else {
&http_error(500, "Unix user $authuser does not exist");
return 0;
}
}
}
# Check per-user IP access control
if ($deny{$baseauthuser} && &ip_match($acptip, $localip, @{$deny{$baseauthuser}}) ||
$allow{$baseauthuser} && !&ip_match($acptip, $localip, @{$allow{$baseauthuser}})) {
&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);
local $preroot = $authuser && defined($config{'preroot_'.$authuser}) ?
$config{'preroot_'.$authuser} :
$baseauthuser && defined($config{'preroot_'.$baseauthuser}) ?
$config{'preroot_'.$baseauthuser} :
$config{'preroot'};
if ($preroot) {
# Always under the current webmin root
$preroot =~ s/^.*\///g;
$preroot = $config{'root'}.'/'.$preroot;
}
if ($preroot) {
# Look in the template root directory first
$is_directory = 1;
$sofar = "";
$full = $preroot.$sofar;
$scriptname = $simple;
foreach $b (split(/\//, $simple)) {
if ($b ne "") { $sofar .= "/$b"; }
$full = $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'};
}
elsif ($is_directory) {
$cgi_pwd = "$config{'root'}$sofar";
}
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"};
$envlang = $ENV{"LANG"};
foreach (keys %ENV) { delete($ENV{$_}); }
$ENV{"PATH"} = $envpath if ($envpath);
$ENV{"TZ"} = $envtz if ($envtz);
$ENV{"USER"} = $envuser if ($envuser);
$ENV{"OLD_LANG"} = $envlang if ($envlang);
$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{"BASE_REMOTE_USER"} = $baseauthuser
if ($authuser ne $baseauthuser);
$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=([a-f0-9]{32}|\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;
$main_process_id = $$;
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;
push(@cgiheader, [ $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 $h (@cgiheader) {
&write_data("$h->[0]: $h->[1]\r\n");
}
&write_data("\r\n");
}
&reset_byte_count();
while($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, $hn, $needhn);
@io = split(/\./, $_[0]);
for($i=2; $i<@_; $i++) {
$needhn++ if ($_[$i] =~ /^\*(\S+)$/);
}
if ($needhn && !defined($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;
}
# users_match(&uinfo, user, ...)
# Returns 1 if a user is in a list of users and groups
sub users_match
{
local $uinfo = shift(@_);
local $u;
local @ginfo = getgrgid($uinfo->[3]);
foreach $u (@_) {
if ($u =~ /^\@(\S+)$/) {
return 1 if ($1 eq $ginfo[0]);
}
else {
return 1 if ($u eq $uinfo->[0]);
}
}
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) {
# Read a character at a time
while(1) {
local $buf;
local $ok = read(SOCK, $buf, 1);
if ($ok <= 0) {
return $rv;
}
$rv .= $buf;
if ($buf eq "\n") {
return $rv;
}
}
}
while(($idx = index($read_buffer, "\n")) < 0) {
if (length($read_buffer) > 10000) {
&http_error(414, "Request too long",
"Received excessive line <pre>$read_buffer</pre>");
}
# need to read more..
$more = Net::SSLeay::read($ssl_con);
if ($more eq '') {
# 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 $rv;
}
# read_data(length)
# Reads up to some amount of data from SOCK or the SSL connection
sub read_data
{
local ($rv);
if (length($read_buffer)) {
$rv = $read_buffer;
undef($read_buffer);
return $rv;
}
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
{
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;
$$r++;
&write_to_sock(@_);
}
sub PRINTF
{
shift;
my $fmt = shift;
&write_to_sock(sprintf $fmt, @_);
}
sub READ
{
$r = shift;
substr($_[0], $_[2], $_[1]) = substr($postinput, $postpos, $_[1]);
$postpos += $_[1];
}
sub OPEN
{
#print STDERR "open() called - should never happen!\n";
}
sub READLINE
{
if ($postpos >= length($postinput)) {
return undef;
}
local $idx = index($postinput, "\n", $postpos);
if ($idx < 0) {
local $rv = substr($postinput, $postpos);
$postpos = length($postinput);
return $rv;
}
else {
local $rv = substr($postinput, $postpos, $idx-$postpos+1);
$postpos = $idx+1;
return $rv;
}
}
sub GETC
{
return $postpos >= length($postinput) ? undef
: substr($postinput, $postpos++, 1);
}
sub CLOSE { }
sub DESTROY { }
# write_to_sock(data, ...)
sub write_to_sock
{
foreach $d (@_) {
if ($doneheaders || $miniserv::nph_script) {
&write_data($d);
}
else {
$headers .= $d;
while(!$doneheaders && $headers =~ s/^([^\r\n]*)(\r)?\n//) {
if ($1 =~ /^(\S+):\s+(.*)$/) {
$cgiheader{lc($1)} = $2;
push(@cgiheader, [ $1, $2 ]);
}
elsif ($1 !~ /\S/) {
$doneheaders++;
}
else {
&http_error(500, "Bad Header");
}
}
if ($doneheaders) {
if ($cgiheader{"location"}) {
&write_data(
"HTTP/1.0 302 Moved Temporarily\r\n");
&write_data("Date: $datestr\r\n");
&write_data("Server: $config{server}\r\n");
&write_keep_alive(0);
}
elsif ($cgiheader{"content-type"} eq "") {
&http_error(500, "Missing Content-Type Header");
}
else {
&write_data("HTTP/1.0 $ok_code $ok_message\r\n");
&write_data("Date: $datestr\r\n");
&write_data("Server: $config{server}\r\n");
&write_keep_alive(0);
}
foreach $h (@cgiheader) {
&write_data("$h->[0]: $h->[1]\r\n");
}
&write_data("\r\n");
&reset_byte_count();
&write_data($headers);
}
}
}
}
sub END
{
if ($doing_eval && $$ == $main_process_id) {
# A CGI program called exit! This is a horrible hack to
# finish up before really exiting
shutdown(SOCK, 1);
close(SOCK);
close($PASSINw); close($PASSOUTw);
&log_request($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]);
return 0 if (!$users{$_[0]});
return $users{$_[0]} eq crypt($_[1], $users{$_[0]}) ? 1 : 0;
}
sub urandom_timeout
{
close(RANDOM);
}
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