Duncan Bellamy
3 years ago
2 changed files with 0 additions and 609 deletions
@ -1,33 +0,0 @@ |
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#!/bin/sh |
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# |
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# $Id$ |
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# |
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# PROVIDE: rspamd_redirector |
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# REQUIRE: LOGIN |
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# KEYWORD: shutdown |
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# |
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# Add the following line to /etc/rc.conf to enable countd: |
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# rspamd-redirector (bool): Set to "NO" by default. |
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# Set it to "YES" to enable redirector. |
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. /etc/rc.subr |
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name="rspamd_redirector" |
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rcvar=`set_rcvar` |
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procname="@CMAKE_INSTALL_PREFIX@/bin/rspamd-redirector" |
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load_rc_config $name |
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: ${rspamd_redirector_enable="NO"} |
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: ${rspamd_redirector_pidfile="/var/run/rspamd/redirector.pid"} |
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stop_postcmd="rm -f $rspamd_redirector_pidfile" |
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extra_commands="reload" |
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sig_reload="USR1" |
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command="$procname" |
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command_interpreter="/usr/bin/perl" |
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run_rc_command "$1" |
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@ -1,576 +0,0 @@ |
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#!/usr/bin/env perl |
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use warnings; |
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use strict; |
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# Required ports: |
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# www/p5-POE-Component-Client-HTTP |
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# www/p5-POE-Component-Server-HTTP |
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# dns/p5-POE-Component-Client-DNS |
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# databases/p5-Cache-Memcached-Fast |
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# devel/p5-Proc-Daemon |
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# sysutils/p5-Proc-PidUtil |
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# POE::Component::Client::HTTP uses HTTP::Request and response |
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# objects. |
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use POSIX qw(strftime); |
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use HTTP::Request::Common qw(GET POST); |
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use HTTP::Response; |
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use URI::Escape qw(uri_unescape); |
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use Sys::Syslog qw/:standard :macros setlogsock/; |
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use HTML::HeadParser; |
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use Digest; |
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use Proc::Daemon; |
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use Proc::PidUtil; |
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use POE qw(@POE_LOOP@ Component::Server::TCP Filter::HTTPD Component::Client::HTTP); |
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use Redis::Fast; |
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my $with_swf = 1; |
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my $swf_parser; |
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my $saved_swf_url = ""; |
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eval "require SWF::Element" or $with_swf = 0; # p5-SWF-File |
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my $DEBUG = grep { $_ eq '-debug' } @ARGV; |
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our %cfg = ( |
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port => 8080, |
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max_size => 102400, |
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http_timeout => 5, |
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max_rec => 5, |
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pidfile => '/tmp/redirector.pid', |
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do_log => 0, |
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debug => 0, |
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redis_server => 'localhost:6379', |
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facility => LOG_LOCAL3, # syslog facility |
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log_level => LOG_INFO, |
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digest_bits => 256, |
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cache_expire => 3600, |
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user => '@RSPAMD_USER@', |
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group => '@RSPAMD_GROUP@', |
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cfg_file => '@CMAKE_INSTALL_PREFIX@/etc/rspamd-redirector.conf', |
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); |
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our $do_reopen_log = 0; |
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our $redis_conn; |
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############################################ Subs ######################################## |
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# Read file into string |
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sub read_file { |
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my ($file) = @_; |
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open( IN, $file ) or _log( LOG_ALERT, "Can't open $file: $!" ); |
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local $/; |
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my $content = <IN>; |
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close IN; |
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return $content; |
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} |
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# Write log line: |
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sub _log { |
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my ( $l, $w, @s ) = @_; |
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if ($DEBUG) { |
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printf STDERR $w . "\n", @s; |
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} |
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else { |
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syslog( $l, $w . "\n", @s ) if ( $l <= $cfg{'log_level'} ); |
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} |
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if ( $l == LOG_ALERT ) { |
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die $w; |
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} |
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} |
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# Init swf parser |
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sub swf_init_parser { |
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if ($with_swf) { |
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$swf_parser = SWF::Parser->new( 'tag-callback' => \&swf_tag_callback ); |
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} |
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} |
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# Checking for SWF url |
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sub swf_search_get_url { |
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my $actions = shift; |
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my $saved_pool_str = ""; |
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for my $action (@$actions) { |
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if ( $action->tag_name eq 'ActionConstantPool' ) { |
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my $pool = $action->ConstantPool; |
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for my $string (@$pool) { |
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if ( $string =~ /^https?:\/\// ) { |
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$saved_pool_str = $string->value; |
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} |
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} |
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} |
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elsif ( $action->tag_name eq 'ActionGetURL2' ) { |
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if ( $saved_pool_str ne "" ) { |
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$saved_swf_url = $saved_pool_str; |
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} |
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} |
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elsif ( $action->tag_name =~ 'ActionGetURL' ) { |
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$saved_swf_url = $action->UrlString->value; |
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} |
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} |
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} |
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# SWF check tag utility |
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sub swf_check_tag { |
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my ( $t, $stream ) = @_; |
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my ($tagname) = $t->tag_name; |
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for ($tagname) { |
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( /^Do(Init)?Action$/ or /^DefineButton$/ ) and do { |
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swf_search_get_url( $t->Actions ); |
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last; |
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}; |
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/^PlaceObject2$/ and do { |
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for my $ca ( @{ $t->ClipActions } ) { |
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swf_search_get_url( $ca->Actions ); |
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} |
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last; |
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}; |
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/^DefineButton2$/ and do { |
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for my $ba ( @{ $t->Actions } ) { |
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swf_search_get_url( $ba->Actions ); |
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} |
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last; |
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}; |
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/^DefineSprite$/ and do { |
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for my $tag ( @{ $t->ControlTags } ) { |
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swf_search_get_url( $tag, $stream ); |
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} |
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last; |
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}; |
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} |
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} |
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# Callback for swf parser |
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sub swf_tag_callback { |
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my ( $self, $tag, $length, $stream ) = @_; |
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my $t = SWF::Element::Tag->new( Tag => $tag, Length => $length ); |
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my ($tagname) = $t->tag_name; |
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return |
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unless $tagname eq 'DoAction' |
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or $tagname eq 'DoInitAction' |
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or $tagname eq 'PlaceObject2' |
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or $tagname eq 'DefineButton' |
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or $tagname eq 'DefineButton2' |
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or $tagname eq 'DefineSprite'; |
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if ( $tagname eq 'DefineSprite' ) { |
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# Tags in the sprite are not unpacked here. |
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$t->shallow_unpack($stream); |
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$t->TagStream->parse( callback => \&swf_tag_callback ); |
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return; |
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} |
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elsif ( $tagname eq 'PlaceObject2' ) { |
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# Most of PlaceObject2 tags don't have ClipActions. |
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$t->lookahead_Flags($stream); |
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return unless $t->PlaceFlagHasClipActions; |
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} |
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# unpack the tag and search actions. |
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$t->unpack($stream); |
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swf_check_tag($t); |
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} |
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# Check url from redis cache first |
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sub redis_check_url { |
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my ($url) = @_; |
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my $context = Digest->new("SHA-512"); |
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$context->add($url); |
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return $redis_conn->get( $context->digest() ); |
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} |
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# Write url to redis key |
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sub redis_cache_url { |
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my ( $url, $url_real ) = @_; |
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if ( $url ne $url_real ) { |
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my $context = Digest->new("SHA-512"); |
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$context->add($url); |
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if ( !$redis_conn->setex( $context->digest(), $cfg{cache_expire}, $url_real ) ) { |
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_log( LOG_INFO, "cannot save redirect from $url to $url_real in redis" ); |
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} |
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} |
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} |
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sub create_response { |
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my ( $code, $uri ) = @_; |
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my $new_response; |
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if ($uri) { |
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$new_response = HTTP::Response->new( $code, 'OK' ); |
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$new_response->header( "Uri", $uri ); |
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$new_response->content($uri); |
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$new_response->content_length( length($uri) ); |
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} |
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else { |
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$new_response = HTTP::Response->new($code); |
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$new_response->content_length(0); |
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} |
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$new_response->header( "Connection", "Close" ); |
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$new_response->header( "Proxy-Connection", "Close" ); |
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return $new_response; |
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} |
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# POE http client callback |
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sub process_client { |
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my ( $kernel, $heap ) = @_[ KERNEL, HEAP ]; |
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my $http_request = $_[ARG0]->[0]; |
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my $rec = $_[ARG0]->[1][0]; |
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my $http_response = $_[ARG1]->[0]; |
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my $base_url = $_[ARG0]->[1][1]; |
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$saved_swf_url = ""; |
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if ( $rec == 0 ) { |
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$base_url = $http_request->uri; |
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} |
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else { |
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# Check cache for each url |
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my $redirect = redis_check_url( $http_request->uri ); |
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if ($redirect) { |
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_log( LOG_INFO, "Memcached redirect from %s to %s for request from: %s", |
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$http_response->base, $redirect, $heap->{remote_ip} ); |
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my $new_response = create_response( 200, $redirect ); |
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# Avoid sending the response if the client has gone away. |
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$heap->{client}->put($new_response) if defined $heap->{client}; |
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# Shut down the client's connection when the response is sent. |
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return; |
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} |
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} |
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if ($do_reopen_log) { |
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$do_reopen_log = 0; |
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reopen_log(); |
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} |
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if ( $rec > $cfg{max_rec} ) { |
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_log( LOG_INFO, "Max recursion exceeded: %d from %s to %s for request from: %s", |
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$rec, $base_url, $http_request->uri, $heap->{remote_ip} ); |
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# Write to cache |
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redis_cache_url( $base_url, $http_request->uri ); |
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my $new_response = create_response( 200, $http_request->uri ); |
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# Avoid sending the response if the client has gone away. |
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$heap->{client}->put($new_response) if defined $heap->{client}; |
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# Shut down the client's connection when the response is sent. |
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$kernel->yield("shutdown"); |
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return; |
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} |
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# Detect HTTP redirects |
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if ( $http_response->is_redirect ) { |
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my $redirect = $http_response->header('Location'); |
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if ($redirect) { |
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if ( $redirect =~ /^https?:\/\// ) { |
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_log( LOG_INFO, "HTML redirect from %s to %s for request from: %s", |
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$http_response->base, $redirect, $heap->{remote_ip} ); |
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my $request = HTTP::Request->new( 'GET', $redirect ); |
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$request->header( "Connection", "close" ); |
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$request->header( "Proxy-Connection", "close" ); |
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$kernel->post( "cl", "request", "got_response", $request, [ $rec + 1, $base_url ] ); |
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return; |
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} |
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else { |
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_log( LOG_INFO, "ignoring internal redirect from %s to %s for request from: %s", |
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$http_request->uri, $redirect, $heap->{remote_ip} ); |
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my $new_response = create_response( 200, $http_request->uri ); |
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# Avoid sending the response if the client has gone away. |
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$heap->{client}->put($new_response) if defined $heap->{client}; |
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# Shut down the client's connection when the response is sent. |
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$kernel->yield("shutdown"); |
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return; |
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} |
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} |
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} |
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elsif ( $http_response->code != 200 ) { |
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_log( LOG_INFO, "HTTP response was %d, for request to %s", $http_response->code, $http_request->uri ); |
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my $new_response; |
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if ( $rec == 0 ) { |
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$new_response = create_response( $http_response->code ); |
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} |
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else { |
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redis_cache_url( $base_url, $http_request->uri ); |
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$new_response = create_response( 200, $http_request->uri ); |
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} |
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# Avoid sending the response if the client has gone away. |
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$heap->{client}->put($new_response) if defined $heap->{client}; |
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# Shut down the client's connection when the response is sent. |
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$kernel->yield("shutdown"); |
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return; |
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} |
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my $response_type = $http_response->content_type(); |
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if ( $response_type =~ /^text/i ) { |
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my $content = $http_response->decoded_content(); |
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my $p = HTML::HeadParser->new($http_response); |
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$p->parse($content); |
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my $expire = $http_response->header('Refresh'); |
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if ( $http_response->is_redirect || $expire ) { |
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my $redirect; |
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if ($expire) { |
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$expire =~ /URL=(\S+)/; |
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$redirect = $1; |
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} |
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else { |
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$redirect = $http_response->header('Location'); |
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} |
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if ($redirect) { |
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if ( $redirect =~ /^https?:\/\// ) { |
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_log( LOG_INFO, "HTML redirect from %s to %s for request from: %s", |
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$http_response->base, $redirect, $heap->{remote_ip} ); |
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my $request = HTTP::Request->new( 'GET', $redirect ); |
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$request->header( "Connection", "close" ); |
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$request->header( "Proxy-Connection", "close" ); |
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$kernel->post( "cl", "request", "got_response", $request, [ $rec + 1, $base_url ] ); |
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return; |
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} |
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else { |
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_log( LOG_INFO, "ignoring internal redirect from %s to %s for request from: %s", |
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$http_response->base, $redirect, $heap->{remote_ip} ); |
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} |
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} |
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} |
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if ( $content =~ /location\s*=\s*["']*(https?:\/\/[^"'\s]+)["']*/im ) { |
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my $redir = uri_unescape($1); |
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_log( LOG_INFO, "js redirect from %s to %s for request from: %s", |
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$http_response->base, $1, $heap->{remote_ip} ); |
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my $request = HTTP::Request->new( 'GET', $redir ); |
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$request->header( "Connection", "close" ); |
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$request->header( "Proxy-Connection", "close" ); |
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$kernel->post( "cl", "request", "got_response", $request, [ $rec + 1, $base_url ] ); |
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return; |
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} |
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} |
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elsif ( |
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$with_swf |
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&& ( |
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$response_type eq 'application/x-shockwave-flash' |
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|| ( $http_request->uri =~ /\.swf(\?.*)?$/i |
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&& $http_response->code == 200 ) |
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) |
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) |
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{ |
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my $content = $http_response->decoded_content(); |
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$swf_parser->parse($content); |
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if ( $saved_swf_url ne "" ) { |
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_log( LOG_INFO, "flash redirect from %s to %s for request from: %s", |
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$http_response->base, $saved_swf_url, $heap->{remote_ip} ); |
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my $request = HTTP::Request->new( 'GET', $saved_swf_url ); |
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# Reset swf redirect global variable |
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$saved_swf_url = ""; |
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$request->header( "Connection", "close" ); |
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$request->header( "Proxy-Connection", "close" ); |
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$kernel->post( "cl", "request", "got_response", $request, [ $rec + 1, $base_url ] ); |
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return; |
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} |
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} |
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else { |
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_log( LOG_INFO, "response wasn't text request from: %s, response is: %s", $heap->{remote_ip}, $response_type ); |
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} |
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_log( LOG_INFO, "redirect from %s to %s for request from: %s", $base_url, $http_request->uri, $heap->{remote_ip} ); |
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# Write to cache |
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redis_cache_url( $base_url, $http_request->uri ); |
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my $new_response = create_response( $http_response->code, $http_request->uri ); |
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# Avoid sending the response if the client has gone away. |
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$heap->{client}->put($new_response) if defined $heap->{client}; |
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# Shut down the client's connection when the response is sent. |
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||||
$kernel->yield("shutdown"); |
|
||||
|
|
||||
} |
|
||||
|
|
||||
sub process_input { |
|
||||
my ( $kernel, $heap, $request ) = @_[ KERNEL, HEAP, ARG0 ]; |
|
||||
|
|
||||
if ( $request->isa("HTTP::Response") ) { |
|
||||
$heap->{client}->put($request); |
|
||||
$kernel->yield("shutdown"); |
|
||||
return; |
|
||||
} |
|
||||
|
|
||||
my $domain; |
|
||||
if ( $request->uri =~ /^http:\/\/([^\/]+)\// ) { |
|
||||
my @parts = split( /\./, $1 ); |
|
||||
my $c1 = pop @parts; |
|
||||
my $c2 = pop @parts; |
|
||||
$domain = "$c2.$c1"; |
|
||||
} |
|
||||
|
|
||||
if ( |
|
||||
( defined( $cfg{check_regexp} ) && $request->uri !~ $cfg{check_regexp} ) |
|
||||
|| ( defined( $cfg{check_domains} ) |
|
||||
&& scalar( grep { $_ eq $domain } @{ $cfg{check_domains} } ) == 0 ) |
|
||||
) |
|
||||
{ |
|
||||
my $new_response = create_response( 200, $request->uri ); |
|
||||
|
|
||||
# Avoid sending the response if the client has gone away. |
|
||||
$heap->{client}->put($new_response) if defined $heap->{client}; |
|
||||
$kernel->yield("shutdown"); |
|
||||
|
|
||||
# Shut down the client's connection when the response is sent. |
|
||||
return; |
|
||||
} |
|
||||
|
|
||||
# Check cache first |
|
||||
my $redirect = redis_check_url( $request->uri ); |
|
||||
if ($redirect) { |
|
||||
_log( LOG_INFO, "Memcached redirect from %s to %s for request from: %s", |
|
||||
$request->uri, $redirect, $heap->{remote_ip} ); |
|
||||
my $new_response = create_response( 200, $redirect ); |
|
||||
|
|
||||
# Avoid sending the response if the client has gone away. |
|
||||
$heap->{client}->put($new_response) if defined $heap->{client}; |
|
||||
$kernel->yield("shutdown"); |
|
||||
|
|
||||
# Shut down the client's connection when the response is sent. |
|
||||
return; |
|
||||
} |
|
||||
|
|
||||
# Start http request |
|
||||
my $new_request = HTTP::Request->new( 'GET', $request->uri ); |
|
||||
$new_request->header( "Connection", "close" ); |
|
||||
$new_request->header( "Proxy-Connection", "close" ); |
|
||||
$kernel->post( "cl", "request", "got_response", $new_request, [ 0, "" ] ); |
|
||||
} |
|
||||
|
|
||||
sub sig_DIE { |
|
||||
my ( $sig, $ex ) = @_[ ARG0, ARG1 ]; |
|
||||
_log( LOG_ERR, "$$: error in $ex->{event}: $ex->{error_str}" ); |
|
||||
$poe_kernel->sig_handled(); |
|
||||
|
|
||||
# Send the signal to session that sent the original event. |
|
||||
if ( $ex->{source_session} ne $_[SESSION] ) { |
|
||||
$poe_kernel->signal( $ex->{source_session}, 'DIE', $sig, $ex ); |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
sub sig_CLD { |
|
||||
my ( $heap, $child_pid ) = @_[ HEAP, ARG1 ]; |
|
||||
return 0; |
|
||||
} |
|
||||
|
|
||||
############################### Main code fragment ################################## |
|
||||
|
|
||||
# Do daemonization |
|
||||
if ( !$DEBUG ) { |
|
||||
Proc::Daemon::Init; |
|
||||
POE::Kernel->has_forked; |
|
||||
setlogsock('unix'); |
|
||||
openlog( 'redirector', 'ndelay,pid', $cfg{'facility'} ); |
|
||||
} |
|
||||
|
|
||||
# Try to eval config file |
|
||||
if ( -f $cfg{cfg_file} ) { |
|
||||
my $config = read_file( $cfg{cfg_file} ); |
|
||||
eval $config; |
|
||||
} |
|
||||
|
|
||||
_log( LOG_ALERT, "Process is already started, check $cfg{pidfile}" ) |
|
||||
if Proc::PidUtil::is_running( $cfg{pidfile} ); |
|
||||
|
|
||||
# Drop privileges |
|
||||
if ( $> == 0 ) { |
|
||||
my $uid = getpwnam( $cfg{user} ) |
|
||||
or _log( LOG_ALERT, "user $cfg{user} unknown" ); |
|
||||
my $gid = getgrnam( $cfg{group} ) |
|
||||
or _log( LOG_ALERT, "group $cfg{group} unknown" ); |
|
||||
$< = $> = $uid; |
|
||||
$) = $( = $gid; |
|
||||
} |
|
||||
|
|
||||
if ( !$DEBUG ) { |
|
||||
_log( LOG_ALERT, "Cannot write to pidfile $cfg{pidfile}" ) |
|
||||
if !open( PID, "> $cfg{pidfile}" ); |
|
||||
close(PID); |
|
||||
} |
|
||||
|
|
||||
# Reopen log on SIGUSR1 |
|
||||
$poe_kernel->sig( DIE => \&sig_DIE ); |
|
||||
$poe_kernel->sig( CLD => \&sig_CLD ); |
|
||||
$SIG{USR1} = sub { $do_reopen_log = 1; $poe_kernel->sig_handled(); }; |
|
||||
$SIG{INT} = sub { $poe_kernel->stop(); }; |
|
||||
$SIG{QUIT} = sub { $poe_kernel->stop(); }; |
|
||||
$SIG{PIPE} = 'IGNORE'; |
|
||||
|
|
||||
if ( !$DEBUG ) { |
|
||||
Proc::PidUtil::make_pidfile( $cfg{pidfile}, $$ ) |
|
||||
or _log( LOG_ALERT, "Cannot write pidfile $cfg{pidfile}" ); |
|
||||
} |
|
||||
|
|
||||
# Init redis connection |
|
||||
_log( LOG_INFO, "Starting redis connection" ); |
|
||||
$redis_conn = Redis::Fast->new( |
|
||||
server => $cfg{redis_server}, |
|
||||
reconnect => 60, |
|
||||
every => 500_000, |
|
||||
encoding => undef, |
|
||||
); |
|
||||
|
|
||||
# POE part |
|
||||
POE::Component::Client::HTTP->spawn( |
|
||||
Alias => 'cl', |
|
||||
MaxSize => $cfg{max_size}, # Remove for unlimited page sizes |
|
||||
Timeout => $cfg{http_timeout}, |
|
||||
ConnectionManager => POE::Component::Client::Keepalive->new( |
|
||||
max_per_host => 256, |
|
||||
max_open => 1024, |
|
||||
keep_alive => 1, |
|
||||
timeout => $cfg{http_timeout}, |
|
||||
), |
|
||||
); |
|
||||
|
|
||||
_log( LOG_INFO, "Starting HTTP server" ); |
|
||||
POE::Component::Server::TCP->new( |
|
||||
Alias => "", |
|
||||
Port => $cfg{port}, |
|
||||
ClientFilter => 'POE::Filter::HTTPD', |
|
||||
|
|
||||
ClientInput => \&process_input, |
|
||||
InlineStates => { got_response => \&process_client, }, |
|
||||
); |
|
||||
|
|
||||
swf_init_parser(); |
|
||||
_log( LOG_NOTICE, "Starting URL resolver" ); |
|
||||
|
|
||||
# Start POE. This will run the server until it exits. |
|
||||
POE::Kernel->run(); |
|
||||
exit 0; |
|
||||
|
|
||||
############################## Final block #################################### |
|
||||
|
|
||||
END { |
|
||||
_log( LOG_NOTICE, 'redirector stopped' ); |
|
||||
closelog(); |
|
||||
} |
|
||||
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