--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/modules/iplogger.php	Sat Nov 15 15:01:28 2008 -0500
@@ -0,0 +1,107 @@
+<?php
+
+eb_hook('event_raw_message', 'iplogger_log_join($message);');
+
+function iplogger_log_join($message)
+{
+  if ( $message['action'] == 'JOIN' )
+  {
+    $nick = mysql_real_escape_string($message['nick']);
+    $basenick = basenick($nick);
+    $host = mysql_real_escape_string($message['host']);
+    $ip = ( $_ = @resolve_ip($message['host'], $message['user']) ) ? mysql_real_escape_string($_) : '0.0.0.0';
+    $channel = mysql_real_escape_string($message['message']);
+    $time = time();
+    $query = "DELETE FROM ip_log WHERE
+                nick = '$nick' AND
+                basenick = '$basenick' AND
+                ip = '$ip' AND
+                hostname = '$host' AND
+                channel = '$channel';";
+    eb_mysql_query($query);
+    
+    $query = "INSERT INTO ip_log ( nick, basenick, ip, hostname, channel, time ) VALUES(
+                '$nick',
+                '$basenick',
+                '$ip',
+                '$host',
+                '$channel',
+                $time
+              );";
+    eb_mysql_query($query);
+  }
+  else if ( $message['ACTION'] == 'NICK' )
+  {
+    // this is for cross-referencing purposes.
+    $nick = mysql_real_escape_string($message['message']);
+    $basenick = basenick($message['nick']);
+    $host = mysql_real_escape_string($message['host']);
+    $ip = ( $_ = @resolve_ip($message['host'], $message['user']) ) ? mysql_real_escape_string($_) : '0.0.0.0';
+    $channel = '__nickchange';
+    $time = time();
+    $query = "DELETE FROM ip_log WHERE
+                nick = '$nick' AND
+                basenick = '$basenick' AND
+                ip = '$ip' AND
+                hostname = '$host' AND
+                channel = '$channel';";
+    eb_mysql_query($query);
+    
+    $query = "INSERT INTO ip_log ( nick, basenick, ip, hostname, channel, time ) VALUES(
+                '$nick',
+                '$basenick',
+                '$ip',
+                '$host',
+                '$channel',
+                $time
+              );";
+    eb_mysql_query($query);
+  }
+}
+
+/**
+ * Attempt to eliminate mini-statuses and such from nicknames.
+ * @example
+ <code>
+ $basenick = basenick('enanobot|debug');
+ // $basenick = 'enanobot'
+ </code>
+ * @param string Nickname
+ * @return string
+ */
+
+function basenick($nick)
+{
+  if ( preg_match('/^`/', $nick) )
+  {
+    $nick = substr($nick, 1);
+  }
+  return preg_replace('/(`|\|)(.+?)$/', '', $nick);
+}
+
+/**
+ * Resolve an IP address. First goes by checking if it's a mibbit or CGI-IRC IP/user, then performs lookups accordingly.
+ * @param string Hostname
+ * @param string Username
+ * @return string IP address
+ */
+
+function resolve_ip($host, $user)
+{
+  if ( $host == 'webchat.mibbit.com' )
+  {
+    return hex2ipv4($user);
+  }
+  return gethostbyname($host);
+}
+
+function hex2ipv4($ip)
+{
+  $ip = preg_replace('/^0x/', '', $ip);
+  $ip = str_split($ip, 2);
+  foreach ( $ip as &$byte )
+  {
+    $byte = hexdec($byte);
+  }
+  return implode('.', $ip);
+}