mirror of https://github.com/BOINC/boinc.git
1821 lines
46 KiB
Perl
Executable File
1821 lines
46 KiB
Perl
Executable File
#!/usr/bin/env perl
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# $Id$
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# from http://www.webmin.com/updates/miniserv.pl
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# slight kludge modifications:
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# any executable file in /cgi-bin/ is considered a cgi program.
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# .php files are run using php cgi.
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# No considerations for security because this is ONLY meant for single-run TESTING
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# A very simple perl web server used by Webmin
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# Require basic libraries
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package miniserv;
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use Socket;
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use POSIX;
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use Sys::Hostname;
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### see 'KLUDGE' below ### --kc
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my $PHP_CGI_PATH = `which php`; chomp $PHP_CGI_PATH;
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die "couldn't find PHP" unless -x $PHP_CGI_PATH;
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# Find and read config file
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if (@ARGV != 1) {
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die "Usage: miniserv.pl <config file>";
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}
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if ($ARGV[0] =~ /^\//) {
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$conf = $ARGV[0];
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}
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else {
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chop($pwd = `pwd`);
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$conf = "$pwd/$ARGV[0]";
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}
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open(CONF, $conf) || die "Failed to open config file $conf : $!";
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while(<CONF>) {
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s/\r|\n//g;
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if (/^#/ || !/\S/) { next; }
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/^([^=]+)=(.*)$/;
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$name = $1; $val = $2;
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$name =~ s/^\s+//g; $name =~ s/\s+$//g;
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$val =~ s/^\s+//g; $val =~ s/\s+$//g;
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$config{$name} = $val;
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}
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close(CONF);
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# Check is SSL is enabled and available
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if ($config{'ssl'}) {
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eval "use Net::SSLeay";
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if (!$@) {
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$use_ssl = 1;
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# These functions only exist for SSLeay 1.0
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eval "Net::SSLeay::SSLeay_add_ssl_algorithms()";
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eval "Net::SSLeay::load_error_strings()";
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if (defined(&Net::SSLeay::X509_STORE_CTX_get_current_cert) &&
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defined(&Net::SSLeay::CTX_load_verify_locations) &&
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defined(&Net::SSLeay::CTX_set_verify)) {
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$client_certs = 1;
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}
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}
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}
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# Check if the syslog module is available to log hacking attempts
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if ($config{'syslog'}) {
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eval "use Sys::Syslog qw(:DEFAULT setlogsock)";
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if (!$@) {
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$use_syslog = 1;
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}
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}
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# check if the PAM module is available to authenticate
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eval "use Authen::PAM";
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if (!$@) {
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# check if the PAM authentication can be used by opening a handle
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if (! ref($pamh = new Authen::PAM("webmin", "root", \&pam_conv_func))) {
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print STDERR "PAM module available, but error during init !\n";
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print STDERR "Disabling PAM functions.\n";
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}
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else {
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$use_pam = 1;
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}
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}
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# Get miniserv's perl path and location
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$miniserv_path = $0;
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open(SOURCE, $miniserv_path);
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<SOURCE> =~ /^#!(\S+)/; $perl_path = $1;
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close(SOURCE);
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@miniserv_argv = @ARGV;
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# Check vital config options
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%vital = ("port", 80,
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"root", "./",
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"server", "MiniServ/0.01",
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"index_docs", "index.html index.htm index.cgi",
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"addtype_html", "text/html",
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"addtype_txt", "text/plain",
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"addtype_gif", "image/gif",
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"addtype_jpg", "image/jpeg",
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"addtype_jpeg", "image/jpeg",
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"realm", "MiniServ",
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"session_login", "/session_login.cgi"
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);
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foreach $v (keys %vital) {
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if (!$config{$v}) {
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if ($vital{$v} eq "") {
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die "Missing config option $v";
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}
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$config{$v} = $vital{$v};
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}
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}
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if (!$config{'sessiondb'}) {
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$config{'pidfile'} =~ /^(.*)\/[^\/]+$/;
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$config{'sessiondb'} = "$1/sessiondb";
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}
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die "Session authentication cannot be used in inetd mode"
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if ($config{'inetd'} && $config{'session'});
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# init days and months for http_date
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@weekday = ( "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" );
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@month = ( "Jan", "Feb", "Mar", "Apr", "May", "Jun",
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"Jul", "Aug", "Sep", "Oct", "Nov", "Dec" );
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# Change dir to the server root
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chdir($config{'root'});
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$user_homedir = (getpwuid($<))[7];
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# Read users file
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if ($config{'userfile'}) {
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open(USERS, $config{'userfile'});
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while(<USERS>) {
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s/\r|\n//g;
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local @user = split(/:/, $_);
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$users{$user[0]} = $user[1];
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$certs{$user[0]} = $user[3] if ($user[3]);
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if ($user[4] =~ /^allow\s+(.*)/) {
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$allow{$user[0]} = [ &to_ipaddress(split(/\s+/, $1)) ];
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}
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elsif ($user[4] =~ /^deny\s+(.*)/) {
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$deny{$user[0]} = [ &to_ipaddress(split(/\s+/, $1)) ];
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}
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}
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close(USERS);
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}
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# Setup SSL if possible and if requested
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if ($use_ssl) {
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$ssl_ctx = Net::SSLeay::CTX_new() ||
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die "Failed to create SSL context : $!";
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$client_certs = 0 if (!$config{'ca'} || !%certs);
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if ($client_certs) {
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Net::SSLeay::CTX_load_verify_locations(
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$ssl_ctx, $config{'ca'}, "");
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Net::SSLeay::CTX_set_verify(
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$ssl_ctx, &Net::SSLeay::VERIFY_PEER, \&verify_client);
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}
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Net::SSLeay::CTX_use_RSAPrivateKey_file(
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$ssl_ctx, $config{'keyfile'},
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&Net::SSLeay::FILETYPE_PEM) || die "Failed to open SSL key";
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Net::SSLeay::CTX_use_certificate_file(
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$ssl_ctx, $config{'keyfile'},
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&Net::SSLeay::FILETYPE_PEM);
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}
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# Setup syslog support if possible and if requested
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if ($use_syslog) {
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openlog("webmin", "cons,pid,ndelay", "daemon");
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}
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# Read MIME types file and add extra types
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if ($config{"mimetypes"} ne "") {
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open(MIME, $config{"mimetypes"});
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while(<MIME>) {
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chop; s/#.*$//;
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if (/^(\S+)\s+(.*)$/) {
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$type = $1; @exts = split(/\s+/, $2);
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foreach $ext (@exts) {
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$mime{$ext} = $type;
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}
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}
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}
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close(MIME);
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}
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foreach $k (keys %config) {
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if ($k !~ /^addtype_(.*)$/) { next; }
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$mime{$1} = $config{$k};
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}
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# get the time zone
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if ($config{'log'}) {
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local(@gmt, @lct, $days, $hours, $mins);
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@make_date_marr = ("Jan", "Feb", "Mar", "Apr", "May", "Jun",
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"Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
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@gmt = gmtime(time());
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@lct = localtime(time());
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$days = $lct[3] - $gmt[3];
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$hours = ($days < -1 ? 24 : 1 < $days ? -24 : $days * 24) +
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$lct[2] - $gmt[2];
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$mins = $hours * 60 + $lct[1] - $gmt[1];
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$timezone = ($mins < 0 ? "-" : "+"); $mins = abs($mins);
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$timezone .= sprintf "%2.2d%2.2d", $mins/60, $mins%60;
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}
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if ($config{'inetd'}) {
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# We are being run from inetd - go direct to handling the request
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$SIG{'HUP'} = 'IGNORE';
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$SIG{'TERM'} = 'DEFAULT';
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$SIG{'PIPE'} = 'DEFAULT';
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open(SOCK, "+>&STDIN");
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# Check if it is time for the logfile to be cleared
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if ($config{'logclear'}) {
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local $write_logtime = 0;
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local @st = stat("$config{'logfile'}.time");
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if (@st) {
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if ($st[9]+$config{'logtime'}*60*60 < time()){
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# need to clear log
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$write_logtime = 1;
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unlink($config{'logfile'});
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}
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}
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else { $write_logtime = 1; }
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if ($write_logtime) {
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open(LOGTIME, ">$config{'logfile'}.time");
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print LOGTIME time(),"\n";
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close(LOGTIME);
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}
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}
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# Initialize SSL for this connection
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if ($use_ssl) {
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$ssl_con = Net::SSLeay::new($ssl_ctx);
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Net::SSLeay::set_fd($ssl_con, fileno(SOCK));
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#Net::SSLeay::use_RSAPrivateKey_file(
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# $ssl_con, $config{'keyfile'},
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# &Net::SSLeay::FILETYPE_PEM);
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#Net::SSLeay::use_certificate_file(
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# $ssl_con, $config{'keyfile'},
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# &Net::SSLeay::FILETYPE_PEM);
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Net::SSLeay::accept($ssl_con) || exit;
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}
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# Work out the hostname for this web server
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if (!$config{'host'}) {
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($myport, $myaddr) =
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unpack_sockaddr_in(getsockname(SOCK));
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$myname = gethostbyaddr($myaddr, AF_INET);
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if ($myname eq "") {
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$myname = inet_ntoa($myaddr);
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}
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$host = $myname;
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}
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else { $host = $config{'host'}; }
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$port = $config{'port'};
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while(&handle_request(getpeername(SOCK), getsockname(SOCK))) { }
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close(SOCK);
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exit;
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}
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# Open main socket
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$proto = getprotobyname('tcp');
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socket(MAIN, PF_INET, SOCK_STREAM, $proto) ||
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die "Failed to open main socket : $!";
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setsockopt(MAIN, SOL_SOCKET, SO_REUSEADDR, pack("l", 1));
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$baddr = $config{"bind"} ? inet_aton($config{"bind"}) : INADDR_ANY;
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for($i=0; $i<5; $i++) {
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last if (bind(MAIN, sockaddr_in($config{port}, $baddr)));
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sleep(1);
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}
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die "Failed to bind port $config{port} : $!" if ($i == 5);
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listen(MAIN, SOMAXCONN);
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if ($config{'listen'}) {
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# Open the socket that allows other webmin servers to find this one
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$proto = getprotobyname('udp');
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if (socket(LISTEN, PF_INET, SOCK_DGRAM, $proto)) {
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setsockopt(LISTEN, SOL_SOCKET, SO_REUSEADDR, pack("l", 1));
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bind(LISTEN, sockaddr_in($config{'listen'}, INADDR_ANY));
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listen(LISTEN, SOMAXCONN);
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}
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else {
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print STDERR "Failed to open listening socket : $!\n";
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$config{'listen'} = 0;
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}
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}
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# Split from the controlling terminal
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if (fork()) { exit; }
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setsid();
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# write out the PID file
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open(PIDFILE, "> $config{'pidfile'}");
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printf PIDFILE "%d\n", getpid();
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close(PIDFILE);
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# Start the log-clearing process, if needed. This checks every minute
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# to see if the log has passed its reset time, and if so clears it
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if ($config{'logclear'}) {
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if (!($logclearer = fork())) {
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while(1) {
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local $write_logtime = 0;
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local @st = stat("$config{'logfile'}.time");
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if (@st) {
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if ($st[9]+$config{'logtime'}*60*60 < time()){
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# need to clear log
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$write_logtime = 1;
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unlink($config{'logfile'});
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}
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}
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else { $write_logtime = 1; }
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if ($write_logtime) {
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open(LOGTIME, ">$config{'logfile'}.time");
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print LOGTIME time(),"\n";
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close(LOGTIME);
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}
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sleep(5*60);
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}
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exit;
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}
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push(@childpids, $logclearer);
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}
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# Setup the logout time dbm if needed
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if ($config{'session'}) {
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eval "use SDBM_File";
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dbmopen(%sessiondb, $config{'sessiondb'}, 0700);
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eval { $sessiondb{'1111111111'} = 'foo bar' };
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if ($@) {
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dbmclose(%sessiondb);
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eval "use NDBM_File";
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dbmopen(%sessiondb, $config{'sessiondb'}, 0700);
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}
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}
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# Run the main loop
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$SIG{'HUP'} = 'miniserv::trigger_restart';
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$SIG{'TERM'} = 'miniserv::term_handler';
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$SIG{'PIPE'} = 'IGNORE';
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@deny = &to_ipaddress(split(/\s+/, $config{"deny"}));
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@allow = &to_ipaddress(split(/\s+/, $config{"allow"}));
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$p = 0;
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while(1) {
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# wait for a new connection, or a message from a child process
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undef($rmask);
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vec($rmask, fileno(MAIN), 1) = 1;
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if ($config{'passdelay'} || $config{'session'}) {
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for($i=0; $i<@passin; $i++) {
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vec($rmask, fileno($passin[$i]), 1) = 1;
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}
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}
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vec($rmask, fileno(LISTEN), 1) = 1 if ($config{'listen'});
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local $sel = select($rmask, undef, undef, 10);
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if ($need_restart) { &restart_miniserv(); }
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local $time_now = time();
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# Clean up finished processes
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local($pid);
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do { $pid = waitpid(-1, WNOHANG);
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@childpids = grep { $_ != $pid } @childpids;
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} while($pid > 0);
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# run the unblocking procedure to check if enough time has passed to
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# unblock hosts that heve been blocked because of password failures
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if ($config{'blockhost_failures'}) {
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$i = 0;
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while ($i <= $#deny) {
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if ($blockhosttime{$deny[$i]} && $config{'blockhost_time'} != 0 &&
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($time_now - $blockhosttime{$deny[$i]}) >= $config{'blockhost_time'}) {
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# the host can be unblocked now
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$hostfail{$deny[$i]} = 0;
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splice(@deny, $i, 1);
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}
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$i++;
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}
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}
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if ($config{'session'}) {
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# Remove sessions with more than 7 days of inactivity
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foreach $s (keys %sessiondb) {
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local ($user, $ltime) = split(/\s+/, $sessiondb{$s});
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if ($time_now - $ltime > 7*24*60*60) {
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delete($sessiondb{$s});
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}
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}
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}
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next if ($sel <= 0);
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if (vec($rmask, fileno(MAIN), 1)) {
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# got new connection
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$acptaddr = accept(SOCK, MAIN);
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if (!$acptaddr) { next; }
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# create pipes
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if ($config{'passdelay'} || $config{'session'}) {
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$PASSINr = "PASSINr$p"; $PASSINw = "PASSINw$p";
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$PASSOUTr = "PASSOUTr$p"; $PASSOUTw = "PASSOUTw$p";
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$p++;
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pipe($PASSINr, $PASSINw);
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pipe($PASSOUTr, $PASSOUTw);
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select($PASSINw); $| = 1; select($PASSINr); $| = 1;
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select($PASSOUTw); $| = 1; select($PASSOUTw); $| = 1;
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}
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select(STDOUT);
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# Check username of connecting user
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local ($peerp, $peera) = unpack_sockaddr_in($acptaddr);
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$localauth_user = undef;
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if ($config{'localauth'} && inet_ntoa($peera) eq "127.0.0.1") {
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if (open(TCP, "/proc/net/tcp")) {
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# Get the info direct from the kernel
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while(<TCP>) {
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s/^\s+//;
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local @t = split(/[\s:]+/, $_);
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if ($t[1] eq '0100007F' &&
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$t[2] eq sprintf("%4.4X", $peerp)) {
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$localauth_user = getpwuid($t[11]);
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last;
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}
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}
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close(TCP);
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}
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else {
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# Call lsof for the info
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local $lsofpid = open(LSOF,
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"$config{'localauth'} -i TCP\@127.0.0.1:$peerp |");
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while(<LSOF>) {
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if (/^(\S+)\s+(\d+)\s+(\S+)/ &&
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$2 != $$ && $2 != $lsofpid) {
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$localauth_user = $3;
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}
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}
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close(LSOF);
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}
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}
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# fork the subprocess
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if (!($handpid = fork())) {
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# setup signal handlers
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$SIG{'TERM'} = 'DEFAULT';
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$SIG{'PIPE'} = 'DEFAULT';
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#$SIG{'CHLD'} = 'IGNORE';
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$SIG{'HUP'} = 'IGNORE';
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# Initialize SSL for this connection
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if ($use_ssl) {
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$ssl_con = Net::SSLeay::new($ssl_ctx);
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Net::SSLeay::set_fd($ssl_con, fileno(SOCK));
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#Net::SSLeay::use_RSAPrivateKey_file(
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# $ssl_con, $config{'keyfile'},
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# &Net::SSLeay::FILETYPE_PEM);
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#Net::SSLeay::use_certificate_file(
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# $ssl_con, $config{'keyfile'},
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# &Net::SSLeay::FILETYPE_PEM);
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Net::SSLeay::accept($ssl_con) || exit;
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}
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# close useless pipes
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if ($config{'passdelay'} || $config{'session'}) {
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foreach $p (@passin) { close($p); }
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foreach $p (@passout) { close($p); }
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close($PASSINr); close($PASSOUTw);
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}
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close(MAIN);
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# Work out the hostname for this web server
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if (!$config{'host'}) {
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($myport, $myaddr) =
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unpack_sockaddr_in(getsockname(SOCK));
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$myname = gethostbyaddr($myaddr, AF_INET);
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if ($myname eq "") {
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$myname = inet_ntoa($myaddr);
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}
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|
$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;
|
|
}
|
|
|
|
# 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($ENV{"PWD"});
|
|
close(SOCK);
|
|
open(STDIN, "<&CGIINr");
|
|
open(STDOUT, ">&CGIOUTw");
|
|
open(STDERR, ">&CGIERRw");
|
|
close(CGIINw); close(CGIOUTr); close(CGIERRr);
|
|
### KLUDGE ### --kc
|
|
if ($full =~ /[.]php[34]?$/) {
|
|
$queryargs = "$full $queryargs";
|
|
$full = $PHP_CGI_PATH;
|
|
}
|
|
exec($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;
|
|
}
|
|
}
|
|
if (-f $_[0] && -x $_[0] && $_[0] =~ m,/cgi-bin/,) { ### KLUDGE ### --kc
|
|
return "internal/cgi";
|
|
}
|
|
return "text/plain";
|
|
}
|
|
|
|
# simplify_path(path, bogus)
|
|
# Given a path, maybe containing stuff like ".." and "." convert it to a
|
|
# clean, absolute form.
|
|
sub simplify_path
|
|
{
|
|
local($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;
|
|
}
|
|
|
|
|