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|
#!/usr/bin/perl -T
# fexsrv : web server for F*EX service
#
# Author: Ulli Horlacher <framstag@rus.uni-stuttgart.de>
#
use 5.008;
use Socket;
use IO::Handle;
use Fcntl qw':flock :seek';
use warnings;
BEGIN {
# stunnel workaround
$SIG{CHLD} = "DEFAULT";
$ENV{PERLINIT} = q{
$ENV{LC_ALL} = 'en_US.UTF-8';
unshift @INC,(getpwuid($<))[7].'/perl';
# web error handler
$SIG{__DIE__} = $SIG{__WARN__} = sub {
my $info = '';
my $url = $ENV{REQUEST_URL}||'';
my @d = localtime time;
my $time = sprintf('%d-%02d-%02d %02d:%02d:%02d',
$d[5]+1900,$d[4]+1,$d[3],$d[2],$d[1],$d[0]);
if ($admin) {
my $mailto = "mailto:$admin?subject=fex%20bug";
$info = "<h3>send this error to <a href=\"$mailto\">$admin</a></h3>";
}
$_ = join("\n",@_);
chomp;
s/&/&/g;
s/</</g;
$_ = join("\n",
"<html><body>",
"<h1>INTERNAL ERROR in $0</h1>",
"<pre>\n$_\n</pre>\n<p>",
"$url\n<p>",
"$time\n<p>",
"$info\n<p>",
"</body></html>"
);
$length = length;
unless ($HTTP_HEADER) {
print "HTTP/1.0 200 ERROR\r\n";
print "Content-Type: text/html\r\n";
print "Content-Length: $length\r\n";
print "\r\n";
}
print;
exit 99;
}
};
eval $ENV{PERLINIT};
}
# use BSD::Resource;
# setrlimit(RLIMIT_CPU,999,999) or die "$0: $!\n";
# SSL remote address provided by stunnel
if (@ARGV and $ARGV[0] eq 'stunnel' and $ENV{REMOTE_HOST} =~ /(.+)/) {
$ssl_ra = $1;
}
# KEEP_ALIVE <== callback from CGI
if ($ENV{KEEP_ALIVE}) {
$keep_alive = $ENV{KEEP_ALIVE};
} else {
%ENV = ( PERLINIT => $ENV{PERLINIT} ); # clean environment
}
$ENV{HOME} = (getpwuid($<))[7] or die "no HOME";
# fexsrv MUST be run with full path!
if ($0 =~ m:^(/.+)/bin/fexsrv:) {
$FEXHOME = $1;
$FEXHOME =~ s:/+:/:g;
$FEXHOME =~ s:/$::;
$ENV{FEXHOME} = $FEXHOME;
}
foreach my $lib (
$FEXHOME,
'/usr/local/fex',
'/usr/local/share/fex',
'/usr/share/fex',
) {
$ENV{FEXLIB} = $FEXLIB = $lib and last if -f "$lib/fex.pp";
$ENV{FEXLIB} = $FEXLIB = "$lib/lib" and last if -f "$lib/lib/fex.pp";
}
# import from fex.pp
our ($hostname,$debug,$timeout,$max_error,$max_error_handler);
our ($spooldir,@logdir,$docdir,$xkeydir,$akeydir,$lockdir);
our ($force_https,$default_locale,$bs,$MB,$adlm,@forbidden_user_agents);
our (@locales);
# load common code (local config: $FEXHOME/lib/fex.ph)
require "$FEXLIB/fex.pp" or die "cannot load $FEXLIB/fex.pp - $!\n";
chdir $spooldir or http_die("$0: $spooldir - $!\n");
our $log = 'fexsrv.log';
our $error = 'F*EX ERROR';
our $htmlsource;
our $hid = ''; # header ID
our @log;
$0 = untaint($0);
$ENV{GATEWAY_INTERFACE} = 'CGI/1.1f';
$ENV{SERVER_NAME} = $hostname;
$ENV{REQUEST_METHOD} = '';
$ENV{QUERY_STRING} = '';
$ENV{HTTP_COOKIE} = '';
$ENV{PATH_INFO} = '';
$ENV{RANDOM} = randstring(8);
$ENV{FEATURES} = join(',',qw(
SID CHECKRECIPIENT GROUPS QUOTA FILEID MULTIPOST XKEY FILEQUERY FILESTREAM
JUP NOSTORE AXEL FEXMAIL FILELINK
));
$port = 0;
# continue session?
if ($keep_alive) {
if ($ENV{HTTP_HOST} =~ /(.+):(.+)/) {
$hostname = $1;
$port = $2;
} else {
$hostname = $ENV{HTTP_HOST};
if ($ENV{PROTO} eq 'https') { $port = 443 }
else { $port = 80 }
}
$ra = $ENV{REMOTE_ADDR};
$rh = $ENV{REMOTE_HOST};
}
# new session
else {
my $iaddr;
# HTTPS connect
if ($ssl_ra) {
$ENV{PROTO} = 'https';
$ENV{REMOTE_ADDR} = $ra = $ssl_ra;
if ($ssl_ra =~ /[\w:]:\w/) {
# ($rh) = `host $ssl_ra 2>/dev/null` =~ /name pointer (.+)\.$/;
$^W = 0; eval 'use Socket6'; $^W = 1;
http_error(503) if $@;
$iaddr = inet_pton(AF_INET6,$ssl_ra) and
$rh = gethostbyaddr($iaddr,AF_INET6);
} else {
$rh = gethostbyaddr(inet_aton($ra),AF_INET);
}
$rh ||= '-';
$port = 443;
# print {$log} "X-SSL-Remote-Host: $ssl_ra\n";
}
# HTTP connect
else {
$ENV{PROTO} = 'http';
my $sa = getpeername(STDIN) or die "no network stream on STDIN\n";
if (sockaddr_family($sa) == AF_INET) {
($ENV{REMOTE_PORT},$iaddr) = sockaddr_in($sa);
$ENV{REMOTE_ADDR} = $ra = inet_ntoa($iaddr);
$rh = gethostbyaddr($iaddr,AF_INET);
($port) = sockaddr_in(getsockname(STDIN));
} elsif (sockaddr_family($sa) == AF_INET6) {
$^W = 0; eval 'use Socket6'; $^W = 1;
http_error(503) if $@;
($ENV{REMOTE_PORT},$iaddr) = unpack_sockaddr_in6($sa);
$ENV{REMOTE_ADDR} = $ra = inet_ntop(AF_INET6,$iaddr);
$rh = gethostbyaddr($iaddr,AF_INET6);
($port) = unpack_sockaddr_in6(getsockname(STDIN));
} else {
die "unknown IP version\n";
}
$port = 80 unless $port;
}
$ENV{REMOTE_HOST} = $rh || '';
$ENV{HTTP_HOST} = ($port == 80 or $port == 443)
? $hostname : "$hostname:$port";
$ENV{PORT} = $port;
}
if ($reverse_proxy_ip and $reverse_proxy_ip eq $ra) {
$ENV{FEATURES} =~ s/SID,//;
}
if (@anonymous_upload and ipin($ra,@anonymous_upload)) {
$ENV{FEATURES} .= ',ANONYMOUS';
}
$| = 1;
$SIG{CHLD} = "DEFAULT"; # stunnel workaround
$SIG{ALRM} = sub {
# printf {$log} "\nTIMEOUT %s %s\n",isodate(time),$connect;
if (@log) {
debuglog('TIMEOUT',isodate(time));
fexlog($connect,@log,"TIMEOUT");
}
exit;
};
REQUEST: while (*STDIN) {
if (defined $ENV{REQUESTCOUNT}) { $ENV{REQUESTCOUNT}++ }
else { $ENV{REQUESTCOUNT} = 0 }
$connect = sprintf "%s:%s %s %s %s [%s_%s]",
$keep_alive ? 'CONTINUE' : 'CONNECT',
$port,
isodate(time),
$rh||'-',
$ra,
$$,$ENV{REQUESTCOUNT};
$hid = sprintf("%s %s\n",$rh||'-',$ra);
@header = @log = ();
$header = '';
# read complete HTTP header
while (defined ($_ = &getaline)) {
last if /^\s*$/;
$hl += length;
$header .= $_;
s/[\r\n]+$//;
# URL-encode non-printable chars
s/([\x00-\x08\x0E-\x1F\x7F-\x9F])/sprintf "%%%02X",ord($1)/ge;
s/%21/!/g;
if (@header and s/^\s+/ /) {
$header[-1] .= $_;
} else {
push @header,$_;
$header{$1} = $2 if /(.+)\s*:\s*(.+)/;
push @log,$_;
}
if ($hl > $MB) {
fexlog($connect,@log,"OVERRUN");
http_error(413);
}
if (/^(GET \/|\S*Forwarded|\S*Client-IP|\S*Coming-From|User-Agent)/i) {
$hid .= $_."\n";
}
# reverse-proxy?
# (only IPv4 support!)
if ($reverse_proxy_ip and $reverse_proxy_ip eq $ra and
/^\S*(Forwarded|Client-IP|Coming-From)\S*: ([\da-f:.]+)/i
) {
$ENV{REMOTE_ADDR} = $ra = $2;
$ENV{REMOTE_HOST} = $rh = gethostbyaddr(inet_aton($ra),AF_INET) || '';
$ENV{HTTP_HOST} = $hostname;
if ($ENV{PROTO} eq 'https') { $port = 443 }
else { $port = 80 }
}
}
exit unless @header;
exit if $header =~ /^\s*$/;
$ENV{HTTP_HEADER} = $header;
debuglog($header);
# http_die("<pre>$header</pre>");
$ENV{'HTTP_HEADER_LENGTH'} = $hl;
$ENV{REQUEST_URI} = $uri = '';
$cgi = '';
# is it a HTTP-request at all?
$request = shift @header;
if ($request !~ /^(GET|HEAD|POST|OPTIONS).*HTTP\/\d\.\d$/i) {
fexlog($connect,$request,"DISCONNECT: no HTTP request");
badlog("no HTTP request: $request");
exit;
}
if ($force_https and $port != 443
and $request =~ /^(GET|HEAD|POST)\s+(.+)\s+(HTTP\/[\d\.]+$)/i) {
$request = $2;
nvt_print(
"HTTP/1.1 301 Moved Permanently",
"Location: https://$hostname$request",
"Content-Length: 0",
""
);
fexlog($connect,@log);
exit;
}
$request =~ s{^(GET|HEAD|POST) https?://$hostname(:\d+)?}{$1 }i;
if ($request =~ m"^(GET|HEAD) /fop/\w+/") {
# no header inquisition on regular fop request
$header_hook = '';
} else {
&$header_hook($connect,$request,$ra) if $header_hook;
}
unless ($keep_alive) {
if ($request =~ m:(HTTP/1.(\d)): and $2) {
$ENV{KEEP_ALIVE} = $keep_alive = $ra
} else {
$ENV{KEEP_ALIVE} = $keep_alive = '';
}
}
if ($request =~ /^OPTIONS \/?FEX HTTP\/[\d\.]+$/i) {
fexlog($connect,@log);
nvt_print(
"HTTP/1.1 201 OK",
"X-Features: $ENV{FEATURES}",
"X-Timeout: $timeout",
''
);
next REQUEST if $keep_alive;
exit;
}
if ($request =~ m:^GET /?SID HTTP/[\d\.]+$:i) {
if ($ENV{FEATURES} !~ /\bSID\b/) {
fexlog($connect,@log);
nvt_print(
"HTTP/1.1 501 Not Available",
"Server: fexsrv",
"X-Features: ".$ENV{FEATURES},
"X-Timeout: ".$timeout,
'Content-Length: 0',
''
);
} else {
$ENV{SID} = randstring(8);
fexlog($connect,@log);
nvt_print(
"HTTP/1.1 201 ".$ENV{SID},
"Server: fexsrv",
"X-Features: ".$ENV{FEATURES},
"X-SID: ".$ENV{SID},
"X-Timeout: ".$timeout,
'Content-Length: 0',
''
);
}
next REQUEST if $keep_alive;
exit;
}
if ($request =~ /^(GET|HEAD|POST)\s+(.+)\s+(HTTP\/[\d\.]+$)/i) {
$ENV{REQUEST} = $_;
$ENV{REQUEST_METHOD} = uc($1);
$ENV{REQUEST_URI} = $uri = $cgi = $2;
$ENV{HTTP_VERSION} = $protocol = $3;
$ENV{QUERY_STRING} = $1 if $cgi =~ s/\?(.*)//;
$ENV{PATH_INFO} = $1 if $cgi =~ m:/.+?(/.+?)(\?|$):;
$ENV{KEEP_ALIVE} = $keep_alive = '' if $protocol =~ /1\.0/;
$ENV{REQUEST_URL} = "$ENV{PROTO}://$ENV{HTTP_HOST}$ENV{REQUEST_URI}";
if ($uri =~ /<|%3c/i) { badchar("<") }
if ($uri =~ />|%3e/i) { badchar(">") }
if ($uri =~ /\||%7c/i) { badchar("|") }
if ($uri =~ /\\|%5c/i) { badchar("\\") }
}
my $fua = join('|',@forbidden_user_agents);
while ($_ = shift @header) {
# header inquisition!
&$header_hook($connect,$_,$ra) if $header_hook;
# mega stupid "Download Manager" FlashGet
if ($uri =~ m{^/fop/} and m{^Referer: https?://.*\Q$uri$}) {
fexlog($connect,@log,"NULL: FlashGet");
debuglog("NULL: FlashGet");
exec qw'cat /dev/zero' or sleep 30;
exit;
}
if ($fua and /^User-Agent: ($fua)/) {
disconnect($1,"499 User Agent $1 Not Supported",30);
}
if (/^Range:.*,/) {
disconnect("Range a,b","416 Requested Range Not Satisfiable",30);
}
if (/^Range:.*(\d+)-(\d+)/) {
if ($1 > $2) {
disconnect("Range a>b","416 Requested Range Not Satisfiable",0);
}
if (($header{'User-Agent'}||'') !~ /$adlm/ ) {
disconnect("Range a-b","416 Requested Range Not Satisfiable",30);
}
}
if (/^Range:.*\d+-$/ and $hid) {
my $lock = untaint($lockdir.'/'.md5_hex($hid));
if (open $lock,'+>>',$lock) {
if (flock($lock,LOCK_EX|LOCK_NB)) {
seek $lock,0,0;
truncate $lock,0;
print {$lock} $hid;
} else {
disconnect(
"multiple Range request",
"400 Multiple Requests Not Allowed",
10,
);
}
}
}
# client signed int bug
if (/^Range:.*-\d+-/) {
disconnect("Range -a-","416 Requested Range Not Satisfiable",0);
}
# if (/^Range:/ and $protocol =~ /1\.0/) {
# &$header_hook($connect,$_,$ra) while ($header_hook and $_ = shift @header);
# fexlog($connect,@log,"DISCONNECT: Range + HTTP/1.0");
# debuglog("DISCONNECT: Range + HTTP/1.0");
# http_error(416);
# exit;
# }
if (/^Connection:\s*close/i) {
$ENV{KEEP_ALIVE} = $keep_alive = '';
}
# HTTP header ==> environment variables
if (/^([\w\-_]+):\s*(.+)/s) {
$http_var = $1;
$http_val = $2;
$http_var =~ s/-/_/g;
$http_var = uc($http_var);
$http_val =~ s/^\s+//;
$http_val =~ s/\s+$//;
if ($http_var =~ /^X_(FEX_\w+|CONTENT_LENGTH)$/) {
$http_var = $1;
} else {
$http_val =~ s/\s+/ /g;
if ($http_var =~ /^HTTP_(HOST|VERSION)$/) {
$http_var = 'HTTP_X_'.$1;
} elsif ($http_var =~ /^PROXY/) {
# http://cert.at/warnings/all/20160718.html
$http_var = 'HTTP_X_'.$http_var;
} elsif ($http_var !~ /^CONTENT_/) {
$http_var = 'HTTP_'.$http_var;
}
}
$ENV{$http_var} = $http_val;
}
}
# multiline header inquisition
&$header_hook($connect,$header,$ra) if $header_hook;
exit unless $cgi;
# extra download request? (request http://fexserver//xkey)
if ($cgi =~ m{^//([^/]+)$}) {
my $xkey = $1;
my $dkey;
if ($xkey =~ /^afex_\d/) {
$dkey = readlink "$xkeydir/$xkey" and $dkey =~ s/^\.\.\///;
} else {
$dkey = readlink "$xkeydir/$xkey/dkey" and $dkey .= "/$xkey";
}
if ($dkey) {
# xkey downloads are only one time possible - besides afex
if ($xkey !~ /^afex_\d/) {
unlink "$xkeydir/$xkey/xkey";
unlink "$xkeydir/$xkey";
}
nvt_print(
"HTTP/1.1 301 Moved Permanently",
"Location: $ENV{PROTO}://$ENV{HTTP_HOST}/fop/$dkey",
"Content-Length: 0",
""
);
fexlog($connect,@log);
exit;
}
fexlog($connect,@log);
http_error(404);
exit;
}
# get locale
if (($ENV{QUERY_STRING} =~ /.*locale=([\w-]+)/ or
$ENV{HTTP_COOKIE} =~ /.*locale=([\w-]+)/)
and -d "$FEXHOME/locale/$1") {
$ENV{LOCALE} = $locale = $1;
} else {
$ENV{LOCALE} = $locale = $default_locale;
}
# for dynamic HTML documents
if ($ENV{HTTP_COOKIE} =~ /akey=(\w+)/) {
my $akey = $1;
my ($user,$id);
if ($user = readlink "$akeydir/$akey") {
$user =~ s:.*/::;
$user = untaint($user);
if ($id = slurp("$spooldir/$user/@")) {
chomp $id;
$ENV{AKEY} = $akey;
$ENV{USER} = $user;
$ENV{ID} = $id;
}
}
}
# check for name based virtual host
$vhost = vhost($ENV{'HTTP_HOST'});
if ($debug) {
debuglog("ENV:\n");
foreach $var (sort keys %ENV) {
if (defined($ENV{$var})) {
debuglog(sprintf " %s = >%s<\n",$var,$ENV{$var});
}
}
debuglog("\n");
}
# locale definitions in fex.ph?
if (@locales) {
if (@locales == 1) {
$locale = $locales[0];
} elsif (not grep /^$locale$/,@locales) {
$locale = $default_locale;
}
}
# prepare document file name
if ($ENV{REQUEST_METHOD} =~ /^GET|HEAD$/) {
if (%redirect) {
foreach my $r (keys %redirect) {
if ($uri =~ /^\Q$r/) {
redirect($uri,$r);
exit;
}
}
}
$doc = untaint($uri);
$doc =~ s/%([\dA-F]{2})/unpack("a",pack("H2",$1))/ge;
$doc =~ m:/\.\./: and http_error(403);
$doc =~ s:^/+::;
$doc =~ s/\?.*//;
if ($locale and $locale ne 'english' and -e "$docdir/locale/$locale/$doc") {
$doc = "$docdir/locale/$locale/$doc";
} else {
$doc = "$docdir/$doc";
}
}
# CGI or document request?
if ($cgi =~ s:^/+::) {
$cgi =~ s:/.*::;
unless ($cgi) {
my $login = "$FEXHOME/cgi-bin/login";
if (-x $login) {
$cgi = untaint(readlink($login) || $login);
$cgi =~ s:.*/::;
}
}
$ENV{SCRIPT_NAME} = $cgi;
# locale CGIs? (vhost comes already with own FEXLIB)
if ($locale and $locale ne 'english'
and -f "$FEXHOME/locale/$locale/cgi-bin/$cgi") {
$ENV{SCRIPT_FILENAME} = $cgi = "$FEXHOME/locale/$locale/cgi-bin/$cgi";
$ENV{FEXLIB} = $FEXLIB = "$FEXHOME/locale/$locale/lib" unless $vhost;
} else {
$ENV{SCRIPT_FILENAME} = $cgi = "$FEXHOME/cgi-bin/$cgi";
$ENV{FEXLIB} = $FEXLIB = "$FEXHOME/lib" unless $vhost;
}
$status = '';
if (-x $cgi and -f $cgi) {
if (@forbidden_hosts and ipin($ra,@forbidden_hosts)) {
fexlog($connect,@log,"FORBIDDEN");
http_error(403);
}
unlink "$spooldir/.error/$ra";
# push @log,"DEBUG: locale=$locale locales=(@locales)";
fexlog($connect,@log,"EXEC $cgi");
eval { local $^W = 0; exec $cgi };
$status = "$! or bad interpreter";
fexlog($connect,@log,"FAILED to exec $cgi : $status");
http_error(555);
} else {
if (-f "$doc/.htindex") {
require "$FEXLIB/dop";
fexlog($connect,@log);
showindex($doc);
STDOUT->flush;
next REQUEST if $keep_alive;
exit;
}
if (-f "$doc/index.html") {
# force redirect if trailing / is missing
# this is mandatory for processing further HTTP request!
if ($doc !~ m{/$}) {
nvt_print(
"HTTP/1.1 301 Moved Permanently",
"Location: $ENV{REQUEST_URL}/",
"Content-Length: 0",
""
);
fexlog($connect,@log);
next REQUEST if $keep_alive;
exit;
}
$doc .= '/index.html';
$doc =~ s:/+:/:g;
}
$doc =~ s/#.*//; # ignore HTML anchors (stupid msnbot)
# special request for F*EX UNIX clients
if ($ENV{SCRIPT_NAME} eq 'xx.tar') {
#bintar(qw'fexget fexsend xx zz ezz');
}
if ($ENV{SCRIPT_NAME} eq 'sex.tar') {
#bintar(qw'sexsend sexget sexxx');
}
if ($ENV{SCRIPT_NAME} eq 'afex.tar') {
#bintar(qw'afex asex fexget fexsend sexsend sexget');
}
if ($ENV{SCRIPT_NAME} eq 'afs.tar') {
#bintar(qw'afex asex fexget fexsend xx sexsend sexget sexxx zz ezz');
}
# URL ends with ".html!" or ".html?!"
if ($doc =~ s/(\.html)!$/$1/ or
$doc =~ /\.html$/ and $ENV{'QUERY_STRING'} eq '!')
{ $htmlsource = $doc } else { $htmlsource = '' }
if (-f $doc
or $doc =~ /(.+)\.(tar|tgz|zip)$/ and lstat("$1.stream")
or $doc =~ /(.+)\.tgz$/ and -f "$1.tar"
or $doc =~ /(.+)\.gz$/ and -f $1)
{
unlink "$spooldir/.error/$ra";
delete $ENV{SCRIPT_FILENAME};
$ENV{DOCUMENT_FILENAME} = $doc;
require "$FEXLIB/dop";
fexlog($connect,@log);
dop($doc);
STDOUT->flush;
next REQUEST if $keep_alive;
exit;
} elsif ($uri eq '/bunny') {
fexlog($connect,@log);
nvt_print(
'HTTP/1.1 200 OK',
'Server: fexsrv',
"Content-Type: text/plain",
'',
'=:3',
);
exit;
} elsif ($uri eq '/camel') {
fexlog($connect,@log);
nvt_print(
'HTTP/1.1 200 OK',
'Server: fexsrv',
"Content-Type: text/plain",
'',
);
local $/;
print unpack('u',<DATA>);
exit;
} elsif (-e $cgi) {
$status = 'not executable';
}
}
}
# neither document nor CGI ==> error
if ($status) {
fexlog($connect,@log,"FAILED to exec $cgi : $status");
http_error(666);
} else {
fexlog($connect,@log,"UNKNOWN URL");
badlog($request);
http_error(404);
}
exit;
}
# read one text line unbuffered from STDIN
sub getaline {
my $line = '';
my $n = 0;
my $c;
alarm($timeout);
# must use sysread to avoid perl line buffering
# (later exec would destroy line buffer)
while (sysread STDIN,$c,1) {
$line .= $c;
$n++;
last if $c eq "\n";
if ($n > $bs) {
fexlog($connect,@log,$line,"OVERRUN");
http_error(413);
}
}
alarm(0);
return $line;
}
sub fexlog {
my @log = @_;
foreach my $logdir (@logdir) {
if (open $log,'>>',"$logdir/$log") {
flock $log,LOCK_EX;
seek $log,0,SEEK_END;
print {$log} "\n",join("\n",@log),"\n";
close $log;
} else {
http_die("$0: cannot write to $logdir/$log - $!\n");
}
}
}
sub badchar {
my $bc = shift;
fexlog($connect,@log,"DISCONNECT: bad characters in URL");
debuglog("DISCONNECT: bad characters in URL $uri");
badlog($request);
http_die("\"$bc\" is not allowed in URL");
}
sub bintar {
my $tmpdir = "$FEXHOME/tmp";
my $fs = "$ENV{PROTO}://$ENV{HTTP_HOST}";
if (chdir "$FEXHOME/bin") {
fexlog($connect,@log);
chdir $fstb if $fstb;
mkdir $tmpdir;
foreach my $f (@_) {
copy($f,"$tmpdir/$f","s#fexserver = ''#fexserver = '$fs'#");
chmod 0755,"$tmpdir/$f";
}
chdir $tmpdir or http_die("internal error: $tmpdir - $!");
my $tar = `tar cf - @_ 2>/dev/null`;
unlink @_;
nvt_print(
'HTTP/1.1 200 OK',
'Server: fexsrv',
"Content-Length: ".length($tar),
"Content-Type: application/x-tar",
'',
);
print $tar;
exit;
}
}
sub http_error {
my $error = shift;
my $URL = $ENV{REQUEST_URL}||'';
my $URI = $ENV{REQUEST_URI}||'';
if ($error eq 400) {
http_error_header("400 Bad Request");
nvt_print("Your request $URL is not acceptable.");
} elsif ($error eq 403) {
http_error_header("403 Forbidden");
nvt_print("You have no permission to request $URL");
} elsif ($error eq 404) {
http_error_header("404 Not Found");
nvt_print("The requested URI $URI was not found on this server.");
} elsif ($error eq 413) {
http_error_header("413 Payload Too Large");
nvt_print("Your HTTP header is too large.");
} elsif ($error eq 416) {
http_error_header("416 Requested Range Not Satisfiable");
} elsif ($error eq 503) {
http_error_header("503 Service Unavailable");
# nvt_print("No Perl ipv6 support on this server.");
} else {
http_error_header("555 Unknown Error");
nvt_print("The requested URL $URL produced an internal error.");
}
nvt_print(
"<hr>",
"<address>fexsrv at <a href=\"/index.html\">$hostname:$port</a></address>",
"</body></html>",
);
exit;
}
sub disconnect {
my $info = shift;
my $error = shift;
my $wait = shift||0;
# &$header_hook($connect,$_,$ra) while ($header_hook and $_ = shift @header);
fexlog($connect,@log,"DISCONNECT: $info");
debuglog("DISCONNECT: $info");
errorlog("$ENV{REQUEST_URI} ==> $error");
badlog("$ENV{REQUEST_URI} ==> $error ($info)");
sleep $wait;
nvt_print("HTTP/1.0 $error");
exit;
}
sub http_error_header {
my $error = shift;
my $uri = $ENV{REQUEST_URI};
errorlog("$uri ==> $error") if $uri;
nvt_print(
"HTTP/1.1 $error",
"Connection: close",
"Content-Type: text/html; charset=iso-8859-1",
"",
'<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">',
"<html>",
"<head><title>$error</title></head>",
"<body>",
"<h1>$error</h1>",
);
}
sub redirect {
my $uri = shift;
my $r = shift;
my $rr = $redirect{$r};
my $newurl;
$uri =~ s/\Q$r//;
if ($rr =~ s/^!//) {
$newurl = $rr.$uri;
nvt_print(
"HTTP/1.1 301 Moved Permanently",
"Location: $newurl",
"Content-Length: 0",
""
);
} else {
if ($rr =~ /^http/) {
$newurl = $rr.$uri;
} else {
$newurl = "$ENV{PROTO}://$ENV{HTTP_HOST}$rr$uri";
}
http_header("200 OK");
print html_header("$hostname page has moved");
pq(qq(
'<h3>Please use new URL: <a href="$newurl">$newurl</a></h3>'
'</body></html>'
));
}
fexlog($connect,@log,"REDIRECT $newurl");
if ($rr =~ /^http/) {
exit;
} else {
&reexec;
}
}
sub badlog {
my $request = shift;
my @n;
my $ed = "$spooldir/.error";
local $_;
if (@ignore_error) {
foreach (@ignore_error) {
return if $request =~ /$_/;
}
}
if ($ra and $max_error and $max_error_handler) {
mkdir($ed) unless -d $ed;
if (open $ra,"+>>$ed/$ra") {
flock($ra,LOCK_EX);
seek $ra,0,SEEK_SET;
@n = <$ra>;
printf {$ra} "%s %s\n",isodate(time),$request;
close $ra;
&$max_error_handler($ra,@n) if scalar(@n) > $max_error;
}
}
}
__END__
M("`@("`@("`@("`@("`@("`@("`@("`@("`@("`@("`@("PM)R(G+5P*("`@
M("`@("`@("`@("`@("`@("`@("`@("]@8&`M+B`@(&!<("`@("Q=+B`@("`@
M("`@("`@("`@("`@("`@("`L+BY?"B`@("`@("`@("`@("`@("`@("`@("`@
M+&`@("`@(&`B+B`@72X@("`@(&`N("`@("`@("`@("`@("`@7U]?+BY>(&!?
M)V`B(B(*("`@("`@("`@("`@("`@("`@("`@("`I("`@("`@("`G+"TG+2T@
M+B`@("!@+B`@("`@(%]?7RPN+2<@("XN("T@("`G("TP("Y?"B`@("`@("`@
M("`@+"X@("`@("`@("`@?%]?+"Y?("!?("`N+5\@("!<("`\("Y@(B<G)V`L
M7R`@("`@("`@+2!?("TN("`@("`@("<M+BX*("`@("`@("`@('P@(&8M+2TM
M+2TM+2<O("`@("!@)RTM+BXL("`@("`M("`@("`@("`@("T@("`@("`@("`@
M("`@("`G("XL7U\N7%\N)PH@("`@("`@("`@8"TM)R<G)R<G8"TM7"`@("`@
M("`@("`@("!@)RTM+B`@("`@("`@("`@("`@("`@("`@7RPN)RTM)R<*("`@
M("`@("`@("`@("`@("`@("`@("\@("`@("`@("`@("`@("`@("!@8#T@+2`@
M+2`@("!?+2`@7RXM)PH@("`@("`@("`@("`@("`@("`@("!\("`@("`@("`@
M("`@("`@("`@("`@("!?)V`@("`G)U\M+2<*("`@("`@("`@("`@("`@("`@
M("`@?"`@("`@("`@("`@("`@("`@("`O("`@?"T]+BXM+2<*("`@("`@("`@
M("`@("`@(%\@("`@("<N("`@("`@("`N7R`@(%\N+2=@)R`@(&!?7PH@("`@
M("`@("`@("`@("PG("`N("PG("TL3%]?+WP@(%P@8"<G+&\N("`@+5\@("`@
M)V`M+2X*("`@("`@("`@("`@("`@+BPG(BT@("`O("`@("`@("`@?"`@8'8@
M+R`N("PG8"TM+BXG7R`G+@H@("`@("`@("`@("`@("`@("TN+E\L)R`@("`@
M('P@("!\("`@)RTM+E]@("!?+R`@('P@("!\"B`@("`@("`@("`@("`@("`@
M("`@("`@("`@("=@8"<@6R`@("`@("`@("=@)R`@("`L+RXN+PH@("`@("`@
M("`@("`@("`@("`@("`@("`@('P@("`M+B<@("`@("`@("`@("`@("Y;("`@
M+PH@("`@("`@("`@("`@("`@("`@(%]?7U]?7RX@("`L.E]?7U]?7U]?7U]?
M7U]?7RQ@("PG"B`@("TM+2TM+2TM+2TM+2TM+2TM+2TM+2TM+2T@+2(M+2TM
M+2TM+2TM+2TM+2TM+2T]+0H@+2TM+2TM+2TM+2TM+2TM+2TM+2TM+2TM+2TM
6+2TM+2TM+2TM+2TM+2TM+2TM+2TM"@``
|
