From 5e5e774e4ad7b008115d5c89b9748aefbef3ad3a Mon Sep 17 00:00:00 2001
From: Peter Palfrader <peter@palfrader.org>
Date: Mon, 10 Jun 2002 05:12:55 +0000
Subject: Parse remailer-key replies

---
 Echolot/Conf.pm | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 85 insertions(+), 2 deletions(-)

(limited to 'Echolot/Conf.pm')

diff --git a/Echolot/Conf.pm b/Echolot/Conf.pm
index b19b25c..3fa0660 100644
--- a/Echolot/Conf.pm
+++ b/Echolot/Conf.pm
@@ -1,7 +1,7 @@
 package Echolot::Conf;
 
 # (c) 2002 Peter Palfrader <peter@palfrader.org>
-# $Id: Conf.pm,v 1.1 2002/06/05 04:05:40 weasel Exp $
+# $Id: Conf.pm,v 1.2 2002/06/10 05:12:55 weasel Exp $
 #
 
 =pod
@@ -41,6 +41,10 @@ sub remailer_conf($$$) {
 	my ($conf, $token, $time) = @_;
 
 	my ($id) = $token =~ /^conf\.(\d+)$/;
+	(defined $id) &&
+		cluck ("Returned token '$token' has no id at all"),
+		return 0;
+
 	cluck("Could not find id in token '$token'"), return 0 unless defined $id;
 	my ($remailer_type) = ($conf =~ /^\s*Remailer-Type:\s* (.*?) \s*$/imx);
 	cluck("No remailer type found in remailer_conf from '$token'"), return 0 unless defined $remailer_type;
@@ -52,6 +56,7 @@ sub remailer_conf($$$) {
 	
 
 	my $remailer = Echolot::Globals::get()->{'storage'}->get_address_by_id($id);
+	cluck("No remailer found for id '$id'"), return 0 unless defined $remailer;
 	if ($remailer->{'address'} ne $remailer_address) {
 		# Address mismatch -> Ignore reply and add $remailer_address to prospective addresses
 		cluck("Remailer address mismatch $remailer->{'address'} vs $remailer_address. Adding latter to prospective remailers.");
@@ -60,12 +65,90 @@ sub remailer_conf($$$) {
 		Echolot::Globals::get()->{'storage'}->restore_ttl( $remailer->{'address'} );
 		Echolot::Globals::get()->{'storage'}->set_caps($remailer_type, $remailer_caps, $remailer_nick, $remailer_address, $time);
 	}
+
+	return 1;
 };
 
 sub remailer_key($$$) {
 	my ($conf, $token, $time) = @_;
 
-	print "Remailer key\n";
+	my ($id) = $token =~ /^key\.(\d+)$/;
+	(defined $id) or
+		cluck ("Returned token '$token' has no id at all"),
+		return 0;
+
+	my $remailer = Echolot::Globals::get()->{'storage'}->get_address_by_id($id);
+	cluck("No remailer found for id '$id'"), return 0 unless defined $remailer;
+# -----Begin Mix Key-----
+# 7f6d997678b19ccac110f6e669143126
+# 258
+# AASyedeKiP1/UKyfrBz2K6gIhv4jfXIaHo8dGmwD
+# KqkG3DwytgSySSY3wYm0foT7KvEnkG2aTi/uJva/
+# gymE+tsuM8l8iY1FOiXwHWLDdyUBPbrLjRkgm7GD
+# Y7ogSjPhVLeMpzkSyO/ryeUfLZskBUBL0LxjLInB
+# YBR3o6p/RiT0EQAAAAAAAAAAAAAAAAAAAAAAAAAA
+# AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+# AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+# AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+# AAAAAAAAAAAAAAAAAAAAAQAB
+# -----End Mix Key-----
+
+	my %mixmasters;
+	# rot26 rot26@mix.uucico.de 7f6d997678b19ccac110f6e669143126 2.9b33 MC
+	my @mix_confs = ($conf =~ /^[a-z0-9]+ \s+ \S+\@\S+ \s+ [0-9a-f]{32} (?:\s+ \S+ \s+ \S+)?/xmg);
+	my @mix_keys = ($conf =~ /^-----Begin \s Mix \s Key-----\r?\n
+	                          [0-9a-f]{32}\r?\n
+							  \d+\r?\n
+							  (?:[a-zA-Z0-9+\/]*\r?\n)+
+							  -----End \s Mix \s Key-----$/xmg );
+	for (@mix_confs) {
+		my ($nick, $address, $keyid, $version, $caps) = /^([a-z0-9]+) \s+ (\S+@\S+) \s+ ([0-9a-f]{32}) (?:(\S+) \s+ (\S+))?/x;
+		$mixmasters{$keyid} = {
+			nick	=> $nick,
+			address => $address,
+			version => $version,
+			caps    => $caps,
+			summary => $_
+		};
+	};
+	for (@mix_keys) {
+		my ($keyid) =  /^-----Begin \s Mix \s Key-----\r?\n
+	                          ([0-9a-f]{32})\r?\n
+							  \d+\r?\n
+							  (?:[a-zA-Z0-9+\/]*\r?\n)+
+							  -----End \s Mix \s Key-----$/xmg;
+		$mixmasters{$keyid}->{'key'} = $_;
+	};
+
+	for my $keyid (keys %mixmasters) {
+		my $remailer_address = $mixmasters{$keyid}->{'address'};
+		(defined $mixmasters{$keyid}->{'nick'} && ! defined $mixmasters{$keyid}->{'key'}) and
+			cluck("Mixmaster key header without key in reply from $remailer_address"),
+			next;
+		(! defined $mixmasters{$keyid}->{'nick'} && defined $mixmasters{$keyid}->{'key'}) and
+			cluck("Mixmaster key without key header in reply from $remailer_address"),
+			next;
+
+		if ($remailer->{'address'} ne $remailer_address) {
+			# Address mismatch -> Ignore reply and add $remailer_address to prospective addresses
+			cluck("Remailer address mismatch $remailer->{'address'} vs $remailer_address. Adding latter to prospective remailers.");
+			Echolot::Globals::get()->{'storage'}->add_prospective_address($remailer_address, 'key-reply');
+		} else {
+			Echolot::Globals::get()->{'storage'}->restore_ttl( $remailer->{'address'} );
+			Echolot::Globals::get()->{'storage'}->set_key(
+				'mix',
+				$mixmasters{$keyid}->{'nick'},
+				$mixmasters{$keyid}->{'address'},
+				$mixmasters{$keyid}->{'key'},
+				$keyid,
+				$mixmasters{$keyid}->{'version'},
+				$mixmasters{$keyid}->{'caps'},
+				$mixmasters{$keyid}->{'summary'},
+				$time);
+		}
+	};
+
+	return 1;
 };
 
 sub remailer_stats($$$) {
-- 
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