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email-log-search.php
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#!/usr/bin/php
<?php
/*
* email-log-search.php:
*
* Read email log records and report those matching given criteria
* (login name(s), email address(es) and/or ip address(es))
*
* Usage: email-log-search.php [-m] (-l login | -e email-addr | -i ip) [...]
*
* We count each POP3 connection as a "session", and report (print log records to stdout)
* sessions matching an ip address or login name.
*
* For SMTP, we report each connection from a matching ip address, each message
* sent by a matching sasl login, and each message that was sent to or from a
* matching email address.
*
* Log formats currently supported:
*
* postfix (2.5.5 and 2.7.4)
* popa3d (1.0.2)
* dbmail (1.2.12)
*
* Copyright 2011 Jesse Norell <[email protected]>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* popa3d log parser
*
* This is the log format popa3d produces:
*
Dec 1 11:59:04 mail popa3d[1234]: Session from aaa.bbb.ccc.ddd
Dec 1 11:59:04 mail popa3d[1234]: Authentication passed for username
Dec 1 11:59:04 mail popa3d[1234]: 0 messages (0 bytes) loaded
Dec 1 11:59:04 mail popa3d[1234]: 0 (0) deleted, 0 (0) left
*/
function parselog_popa3d(&$r) {
global $logins;
global $ipaddrs;
static $sessions = array();
static $sess_start = 'Session from ';
static $sess_login = 'Authentication passed for ';
static $sess_stop = '( deleted|Didn\'t attempt authentication|Connection timed out|Premature disconnect|Authentication failed for )';
$pid = $r['pid'];
$log = $r['log'];
if (! isset($sessions[$pid])) {
$sessions[$pid] = array();
}
if (count($sessions[$pid]) == 0) {
if (! strncmp($log, $sess_start, strlen($sess_start))) {
# Session Start
$sessions[$pid]['ip'] = substr($log,strlen($sess_start));
$sessions[$pid]['records'][] = $r['record'];
}
} else {
$sessions[$pid]['records'][] = $r['record'];
if (! strncmp($log, $sess_login, strlen($sess_login))) {
# Session Login Name
$l = substr($log,strlen($sess_login));
$sessions[$pid]['login'] = strtolower($l);
} else if (preg_match($sess_stop, $log)) {
# Session Stop
if (in_array($sessions[$pid]['login'], $logins) ||
in_array($sessions[$pid]['ip'], $ipaddrs))
{
foreach ($sessions[$pid]['records'] as $rec)
echo $rec;
}
unset($sessions[$pid]);
}
}
}
/*
* dbmail log parser
*
* Adjust log verbosity as needed,
* this is the log format dbmail 1.2.12 produces:
*
Dec 9 11:59:17 mail1 dbmail/pop3d[31998]: PerformChildTask(): incoming connection from [aa.bb.cc.dd]
Dec 9 11:59:17 mail1 dbmail/pop3d[31998]: pop3(): user username logged in [messages=251, octets=8031123]
Dec 9 11:59:17 mail1 dbmail/pop3d[31998]: pop3_handle_connection(): user username logging out [messages=251, octets=8031123]
* Some other messages are:
Dec 9 12:19:44 mail1 dbmail/pop3d[153]: pop3(): user [username] tried to login with wrong password
Dec 9 12:19:44 mail1 dbmail/pop3d[253]: pop3_handle_connection(): error, uncomplete session
Dec 9 12:19:44 mail1 dbmail/pop3d[353]: ChildSighandler(): got signal [11]
Dec 9 12:19:44 mail1 dbmail/pop3d[453]: auth_getencryption(): got (0) as userid
*/
function parselog_dbmail(&$r) {
global $logins;
global $ipaddrs;
static $sessions = array();
static $sess_start = '/incoming connection from \[((\d{1,3}\.){3}\d{1,3})\]/';
static $sess_login = '/user \[?(.+)\]? (logged in|tried to login)/';
static $sess_stop = '/(user (.+) logging out|error, uncomplete session|got signal |got \(.+\) as userid)/';
$daemon = substr($r['service'],strlen("dbmail/"));
if ($daemon != 'pop3d') return;
$pid = $r['pid'];
$log = $r['log'];
if (! isset($sessions[$pid])) {
$sessions[$pid] = array();
$sessions[$pid]['records'] = array();
}
$sess =& $sessions[$pid];
if (count($sess) == 0) {
if (preg_match($sess_start, $log, $m)) {
# Session Start
$sess['ip'] = $m[1];
$sess['records'][] = $r['record'];
}
} else {
$sess['records'][] = $r['record'];
if (preg_match($sess_login, $log, $m)) {
# Session Login Name
$sess['login'] = strtolower($m[1]);
} else if (preg_match($sess_stop, $log)) {
# Session Stop
if (in_array($sess['login'], $logins) ||
in_array($sess['ip'], $ipaddrs))
{
foreach ($sess['records'] as $rec)
echo $rec;
}
unset($sessions[$pid]);
}
}
}
/*
* postfix log parser
*
* Postfix log verbosity can certainly vary, and this may be
* incomplete for all places messages can be injected,
* but this is basically what we're looking at handling.
*
* Note that using lmtp spam/virus filter, each message gets 2 queue
* id's, and both are needed to determine the final disposition.
*
Dec 1 08:50:15 mail postfix/smtpd[4971]: connect from mail.external.net[aaa.bbb.ccc.ddd]
Dec 1 08:50:16 mail postfix/smtpd[4971]: 8F3D22201281: client=mail.external.net[aaa.bbb.ccc.ddd]
Dec 1 08:50:16 mail postfix/cleanup[3712]: 8F3D22201281: message-id=<[email protected]>
Dec 1 08:50:16 mail postfix/smtpd[4971]: disconnect from mail.external.net[aaa.bbb.ccc.ddd]
Dec 1 08:50:16 mail postfix/qmgr[13241]: 8F3D22201281: from=<[email protected]>, size=68865, nrcpt=1 (queue active)
Dec 1 08:50:32 mail postfix/smtpd[3908]: 989A4A109B12: client=localhost[127.0.0.1]
Dec 1 08:50:32 mail postfix/cleanup[1520]: 989A4A109B12: message-id=<[email protected]>
Dec 1 08:50:32 mail postfix/qmgr[13241]: 989A4A109B12: from=<[email protected]>, size=69284, nrcpt=1 (queue active)
Dec 1 08:50:32 mail postfix/lmtp[890]: 8F3D22201281: to=<[email protected]>, relay=127.0.0.1[127.0.0.1]:10024, delay=16, delays=0.72/0/0/16, dsn=2.6.0, status=sent (250 2.6.0 Ok, id=14283-03, from MTA: 250 2.0.0 Ok: queued as 989A4A109B12)
Dec 1 08:50:32 mail postfix/qmgr[13241]: 8F3D22201281: removed
Dec 1 08:50:32 mail postfix/local[3878]: 989A4A109B12: to=<[email protected]>, relay=local, delay=0.1, delays=0.06/0/0/0.04, dsn=2.0.0, status=sent (delivered to mailbox)
Dec 1 08:50:32 mail postfix/qmgr[13241]: 989A4A109B12: removed
*
* And an SASL login looks like:
*
Dec 1 11:09:56 mail postfix/smtpd[18630]: 682BE48082C9: client=clientx.domainfoo.com[aa.bb.cc.dd], sasl_method=LOGIN, sasl_username=user_xyz
*
* And a non-delivery bounce like:
*
Dec 1 11:52:31 mail postfix/bounce[2322]: 8FB274412985: sender non-delivery notification: AA0F94412987
*
*/
function parselog_postfix(&$r) {
global $logins;
global $emailaddrs;
global $ipaddrs;
global $follow_msgids;
static $sessions = array(); // smtpd sessions
static $messages = array(); // postfix queued messages
static $messageids = array(); // tracked message-ids
# smtpd
static $smtpd_connect = '/connect from ([^[]*)\[((\d{1,3}\.){3}\d{1,3})\]/';
static $smtpd_queuemsg = '/^([[:xdigit:]]+): client=([^[]*)\[((\d{1,3}\.){3}\d{1,3})\]/';
static $smtpd_disconnect = '/disconnect from ([^[]*)\[((\d{1,3}\.){3}\d{1,3})\]/';
static $smtpd_sasl_client = '/^([[:xdigit:]]+): client=([^[]*)\[((\d{1,3}\.){3}\d{1,3})\], sasl_method=[^, ]*, sasl_username=([^, ]+)/';
# qmgr
static $qmgr_removed = '/^([[:xdigit:]]+): removed/';
# lmtp
# potential bug: this also matches delivery to remote postfix servers,
# so we'll try to track their queueid - harmless?
static $lmtp_secondary_qid = '/^([[:xdigit:]]+): (to|from)=<([^>]+)>.+status=sent.+ queued as ([[:xdigit:]]+)/';
# bounce
static $bounce_secondary_qid = '/^([[:xdigit:]]+): sender .*notification: ([[:xdigit:]]+)/';
# various
static $match_to_from = '/^([[:xdigit:]]+): (to|from)=<([^>]+)>/';
static $match_msgid = '/^([[:xdigit:]]+): message-id=(.+)/';
static $qmsg_record = '/^([[:xdigit:]]+): (.*)/';
$daemon = substr($r['service'],strlen("postfix/"));
$pid = $r['pid'];
$log = $r['log'];
$qid = $r['qid'];
if ($qid) {
if (! isset($messages[$qid])) {
$messages[$qid] = array();
$messages[$qid]['records'] = array();
}
$msg =& $messages[$qid];
} else {
$msg = null;
}
switch($daemon)
{
case 'smtpd':
if (! isset($sessions[$pid])) {
$sessions[$pid] = array();
$sessions[$pid]['records'] = array();
}
$sess =& $sessions[$pid];
if (count($sess) == 0) {
if (preg_match($smtpd_connect, $log, $m)) {
# Connect
$sess['connectip'] = $m[2];
$sess['records'][] = $r['record'];
$sess['connect_record'] = $r['record'];
} else if (preg_match($smtpd_queuemsg, $log, $m)) {
$sess['records'][] = $r['record'];
# Message is queued, save id and info
$sess['qid'] = $qid;
$sess['qids'][$qid] = $qid;
$sess['clientip'] = $m[3];
$msg['clientip'] = $m[3];
if (isset($sess['connect_record']))
$msg['records'][] = $sess['connect_record'];
$msg['records'][] = $r['record'];
if (preg_match($smtpd_sasl_client, $log, $m)) {
$sess['sasl_username'] = strtolower($m[5]);
$msg['sasl_username'] = strtolower($m[5]);
}
}
} else if (preg_match($smtpd_queuemsg, $log, $m)) {
$sess['records'][] = $r['record'];
# Message is queued, save id and info
// if (isset($sess['qid'])) {
// // got new message in ongoing session
// }
$sess['qid'] = $qid;
$sess['qids'][$qid] = $qid;
$sess['clientip'] = $m[3];
$msg['clientip'] = $m[3];
$msg['records'][] = $r['record'];
if (preg_match($smtpd_sasl_client, $log, $m)) {
$sess['sasl_username'] = strtolower($m[5]);
$msg['sasl_username'] = strtolower($m[5]);
}
} else if (isset($sess['connectip'])) {
$sess['records'][] = $r['record'];
if (preg_match($smtpd_disconnect, $log, $m)) {
# Disconnect
if (isset($sess['qid'])) {
foreach ($sess['qids'] as $qid)
$msg['records'][] = $r['record'];
} else if (in_array($sess['connectip'], $ipaddrs)) {
# Note if qid is set, the session records will print later
foreach ($sess['records'] as $rec)
echo $rec;
}
unset($sessions[$qid]);
}
}
break;
case 'qmgr':
if (preg_match($qmgr_removed, $log, $m)) {
if ($msg != null) {
$msg['records'][] = $r['record'];
# potential bug:
# if a child qid is removed before the parent's log
# entry ties them together, we would miss the child.
# in practice, I don't see that in our logs.
$print_records=0;
if (isset($msg['clientip'])
&& in_array($msg['clientip'], $ipaddrs))
{
$print_records++;
} else if (isset($msg['sasl_username'])
&& in_array($msg['sasl_username'], $logins))
{
$print_records++;
} else if (isset($msg['addrs'])
&& (count($emailaddrs) > 0))
{
foreach ($msg['addrs'] as $addr)
if (in_array($addr, $emailaddrs))
$print_records++;
}
$msgid = (isset($msg['message-id']) ? $msg['message-id'] : null);
if ($msgid && isset($messageids[$msgid])
&& isset($messageids[$msgid]['tracked'])
&& $messageids[$msgid]['tracked'])
{
$follow_msgid = true;
} else {
$follow_msgid = false;
}
if ($print_records || isset($msg['me_too']) || $follow_msgid) {
if ($msgid) {
$messageids[$msgid]['tracked'] = true;
$follow_msgid = true;
}
foreach ($msg['records'] as $rec)
echo $rec;
}
# flag parent to print (if needed) and remove linkage
if (isset($msg['parent_qid'])
&& isset($messages[$msg['parent_qid']]))
{
if ($print_records)
$messages[$msg['parent_qid']]['me_too']=1;
unset($messages[$msg['parent_qid']]['child_qids'][$qid]);
}
# flag child(s) to print (if needed) and remove linkage(s)
if (isset($msg['child_qids'])) {
foreach ($msg['child_qids'] as $child_qid) {
if ($print_records)
$messages[$child_qid]['me_too']=1;
unset($messages[$child_qid]['parent_qid']);
}
}
if ($msgid && ! $follow_msgid) {
unset($messageids[$msgid]);
}
unset($messages[$qid]);
break;
}
}
// no break, fallthrough to next case
case 'smtp':
case 'cleanup':
case 'lmtp':
case 'local':
case 'pipe':
case 'bounce':
case 'error':
if (preg_match($lmtp_secondary_qid, $log, $m)) {
$qid2 = $m[4];
$msg['child_qids'][$qid2] = $qid2;
$messages[$qid2]['parent_qid'] = $qid;
$msg['addrs'][] = strtolower($m[3]);
$msg['records'][] = $r['record'];
} else if (preg_match($bounce_secondary_qid, $log, $m)) {
$qid2 = $m[2];
$msg['child_qids'][$qid2] = $qid2;
$messages[$qid2]['parent_qid'] = $qid;
$msg['records'][] = $r['record'];
} else if (preg_match($match_to_from, $log, $m)) {
$msg['addrs'][] = strtolower($m[3]);
$msg['records'][] = $r['record'];
} else if ($follow_msgids
&& preg_match($match_msgid, $log, $m)) {
$msg['message-id'] = $m[2];
$msg['records'][] = $r['record'];
} else if ($qid) {
$msg['records'][] = $r['record'];
}
break;
case 'anvil':
case 'master':
case 'pickup':
case 'postfix-script':
case 'postsuper':
case 'scache':
case 'sendmail':
case 'trivial-rewrite':
break;
default:
die ("ERROR: Don't know what to do with postfix service '$daemon'\n");
break;
}
}
/* Main Program */
$usage = "Usage: $argv[0] [-m] (-l login | -e email-addr | -i ip) [...]\n";
$usage .= " -m = follow message-ids (catch subsequent re-injection of message)\n";
$usage .= " -l = match specified login name (pop3 or sasl)\n";
$usage .= " -e = match specified email address\n";
$usage .= " -i = match specified ip address\n";
$usage .= "Note: -l matches login names, -e matches email addresses; you may need to use both\n";
$usage .= "(-e email addresses will not match as a login name otherwise).\n";
$shortopts = "";
$shortopts .= "m"; // Follow Message-IDs
$shortopts .= "l:"; // Login name
$shortopts .= "e:"; // E-Mail Address
$shortopts .= "i:"; // IP Address
$longopts = array(
"login:", // Login name
"email:", // E-Mail Address
"ip:", // IP Address
);
$logins = array();
$emailaddrs = array();
$ipaddrs = array();
$follow_msgids = false;
$options = getopt($shortopts, $longopts);
is_array($options) || die($usage);
foreach ($options as $opt => $val) {
switch($opt)
{
case 'm':
$follow_msgids=true;
break;
case 'l':
case 'login':
if (is_array($val))
foreach ($val as $v)
$logins[] = strtolower($v);
else
$logins[] = strtolower($val);
break;
case 'e':
case 'email':
if (is_array($val))
foreach ($val as $v)
$emailaddrs[] = strtolower($v);
else
$emailaddrs[] = strtolower($val);
break;
case 'i':
case 'ip':
if (is_array($val))
$ipaddrs = $val;
else
$ipaddrs[] = $val;
break;
default:
die($usage);
}
}
count($logins) || count($emailaddrs) || count($ipaddrs) || die($usage);
while ($line = fgets(STDIN)) {
# Common syslog format: m d t hostname service[pid]: log message
// $pattern='/^([[:alpha:]]+ +[\d]+ [\d:]+) [\w]+ ([^[]+)(\[([0-9]+)\])?: (.*)/';
// enchancing the regex to also find a postifx queue id in this preg_match
$pattern='/^([[:alpha:]]+ +[\d]+ [\d:]+) [\w]+ ([^[]+)(\[([0-9]+)\])?: ((([[:xdigit:]]+): )?.*)/';
if (! preg_match($pattern, $line, $m)) continue;
$record = array(
'service' => $m[2],
'pid' => $m[4],
'log' => $m[5],
'qid' => (isset($m[7]) ? $m[7] : null),
'record' => $line,
);
if ($record['service'] == 'popa3d')
parselog_popa3d($record);
else if (! strncmp($record['service'], 'postfix', 7))
parselog_postfix($record);
else if (! strncmp($record['service'], 'dbmail', 6))
parselog_dbmail($record);
}
?>