<?php
+
/**
* Deliver.class.php
*
- * Copyright (c) 1999-2004 The SquirrelMail Project Team
- * Licensed under the GNU GPL. For full terms see the file COPYING.
- *
* This contains all the functions needed to send messages through
* a delivery backend.
*
+ * @author Marc Groot Koerkamp
+ * @copyright © 1999-2007 The SquirrelMail Project Team
+ * @license http://opensource.org/licenses/gpl-license.php GNU Public License
* @version $Id$
- * @author Marc Groot Koerkamp
* @package squirrelmail
*/
/**
* function mail - send the message parts to the SMTP stream
*
- * @param Message $message Message class to send
- * @param resource $stream file handle to the SMTP stream
+ * @param Message $message Message object to send
+ * NOTE that this is passed by
+ * reference and will be modified
+ * upon return with updated
+ * fields such as Message ID, References,
+ * In-Reply-To and Date headers.
+ * @param resource $stream Handle to the outgoing stream
+ * (when FALSE, nothing will be
+ * written to the stream; this can
+ * be used to determine the actual
+ * number of bytes that will be
+ * written to the stream)
+ * @param string $reply_id Identifies message being replied to
+ * (OPTIONAL; caller should ONLY specify
+ * a value for this when the message
+ * being sent is a reply)
+ * @param string $reply_ent_id Identifies message being replied to
+ * in the case it was an embedded/attached
+ * message inside another (OPTIONAL; caller
+ * should ONLY specify a value for this
+ * when the message being sent is a reply)
+ * @param resource $imap_stream If there is an open IMAP stream in
+ * the caller's context, it should be
+ * passed in here. This is OPTIONAL,
+ * as one will be created if not given,
+ * but as some IMAP servers may baulk
+ * at opening more than one connection
+ * at a time, the caller should always
+ * abide if possible. Currently, this
+ * stream is only used when $reply_id
+ * is also non-zero, but that is subject
+ * to change.
+ * @param mixed $extra Any implementation-specific variables
+ * can be passed in here and used in
+ * an overloaded version of this method
+ * if needed.
+ *
+ * @return integer The number of bytes written (or that would have been
+ * written) to the output stream.
*
- * @return integer $raw_length
*/
- function mail($message, $stream=false) {
- $rfc822_header = $message->rfc822_header;
+ function mail(&$message, $stream=false, $reply_id=0, $reply_ent_id=0,
+ $imap_stream=NULL, $extra=NULL) {
+
+ $rfc822_header = &$message->rfc822_header;
+
if (count($message->entities)) {
$boundary = $this->mimeBoundary();
$rfc822_header->content_type->properties['boundary']='"'.$boundary.'"';
$boundary='';
}
$raw_length = 0;
+
+
+ // calculate reply header if needed
+ //
+ if ($reply_id) {
+ global $imapConnection, $username, $imapServerAddress,
+ $imapPort, $mailbox;
+
+ // try our best to use an existing IMAP handle
+ //
+ $close_imap_stream = FALSE;
+ if (is_resource($imap_stream)) {
+ $my_imap_stream = $imap_stream;
+
+ } else if (is_resource($imapConnection)) {
+ $my_imap_stream = $imapConnection;
+
+ } else {
+ $close_imap_stream = TRUE;
+ $my_imap_stream = sqimap_login($username, FALSE,
+ $imapServerAddress, $imapPort, 0);
+ }
+
+ sqimap_mailbox_select($my_imap_stream, $mailbox);
+ $reply_message = sqimap_get_message($my_imap_stream, $reply_id, $mailbox);
+
+ if ($close_imap_stream) {
+ sqimap_logout($my_imap_stream);
+ }
+
+ if ($reply_ent_id) {
+ /* redefine the messsage in case of message/rfc822 */
+ $reply_message = $message->getEntity($reply_ent_id);
+ /* message is an entity which contains the envelope and type0=message
+ * and type1=rfc822. The actual entities are childs from
+ * $reply_message->entities[0]. That's where the encoding and is located
+ */
+
+ $orig_header = $reply_message->rfc822_header; /* here is the envelope located */
+
+ } else {
+ $orig_header = $reply_message->rfc822_header;
+ }
+ $message->reply_rfc822_header = $orig_header;
+ }
+
+
$reply_rfc822_header = (isset($message->reply_rfc822_header)
? $message->reply_rfc822_header : '');
$header = $this->prepareRFC822_Header($rfc822_header, $reply_rfc822_header, $raw_length);
+ $this->send_mail($message, $header, $boundary, $stream, $raw_length, $extra);
+
+ return $raw_length;
+ }
+
+ /**
+ * function send_mail - send the message parts to the IMAP stream
+ *
+ * @param Message $message Message object to send
+ * @param string $header Headers ready to send
+ * @param string $boundary Message parts boundary
+ * @param resource $stream Handle to the SMTP stream
+ * (when FALSE, nothing will be
+ * written to the stream; this can
+ * be used to determine the actual
+ * number of bytes that will be
+ * written to the stream)
+ * @param int &$raw_length The number of bytes written (or that
+ * would have been written) to the
+ * output stream - NOTE that this is
+ * passed by reference
+ * @param mixed $extra Any implementation-specific variables
+ * can be passed in here and used in
+ * an overloaded version of this method
+ * if needed.
+ *
+ * @return void
+ *
+ */
+ function send_mail($message, $header, $boundary, $stream=false,
+ &$raw_length, $extra=NULL) {
+
+
if ($stream) {
$this->preWriteToStream($header);
$this->writeToStream($stream, $header);
}
$this->writeBody($message, $stream, $raw_length, $boundary);
- return $raw_length;
}
/**
*
* @param Message $message Message object to transform
* @param resource $stream SMTP output stream
+ * (when FALSE, nothing will be
+ * written to the stream; this can
+ * be used to determine the actual
+ * number of bytes that will be
+ * written to the stream)
* @param integer &$length_raw raw length of the message (part)
* as returned by mail fn
* @param string $boundary custom boundary to call, usually for subparts
if ($boundary && $message->entity_id && count($message->entities)) {
if (strpos($boundary,'_part_')) {
$boundary = substr($boundary,0,strpos($boundary,'_part_'));
+
+ // the next four lines use strrev to reverse any nested boundaries
+ // because RFC 2046 (5.1.1) says that if a line starts with the outer
+ // boundary string (doesn't matter what the line ends with), that
+ // can be considered a match for the outer boundary; thus the nested
+ // boundary needs to be unique from the outer one
+ //
+ } else if (strpos($boundary,'_trap_')) {
+ $boundary = substr(strrev($boundary),0,strpos(strrev($boundary),'_part_'));
}
- $boundary_new = $boundary . '_part_'.$message->entity_id;
+ $boundary_new = strrev($boundary . '_part_'.$message->entity_id);
} else {
$boundary_new = $boundary;
}
*
* @param Message $message Message object to transform
* @param resource $stream SMTP output stream
+ * (when FALSE, nothing will be
+ * written to the stream; this can
+ * be used to determine the actual
+ * number of bytes that will be
+ * written to the stream)
* @param integer &$length length of the message part
* as returned by mail fn
*
case 'message':
if ($message->body_part) {
$body_part = $message->body_part;
+ // remove NUL characters
+ $body_part = str_replace("\0",'',$body_part);
$length += $this->clean_crlf($body_part);
if ($stream) {
$this->preWriteToStream($body_part);
}
$last = $body_part;
} elseif ($message->att_local_name) {
+ global $username, $attachment_dir;
+ $hashed_attachment_dir = getHashedDir($username, $attachment_dir);
$filename = $message->att_local_name;
- $file = fopen ($filename, 'rb');
+ $file = fopen ($hashed_attachment_dir . '/' . $filename, 'rb');
while ($body_part = fgets($file, 4096)) {
+ // remove NUL characters
+ $body_part = str_replace("\0",'',$body_part);
$length += $this->clean_crlf($body_part);
if ($stream) {
$this->preWriteToStream($body_part);
default:
if ($message->body_part) {
$body_part = $message->body_part;
+ // remove NUL characters
+ $body_part = str_replace("\0",'',$body_part);
$length += $this->clean_crlf($body_part);
if ($stream) {
$this->writeToStream($stream, $body_part);
}
} elseif ($message->att_local_name) {
+ global $username, $attachment_dir;
+ $hashed_attachment_dir = getHashedDir($username, $attachment_dir);
$filename = $message->att_local_name;
- $file = fopen ($filename, 'rb');
- $encoded = '';
+ $file = fopen ($hashed_attachment_dir . '/' . $filename, 'rb');
while ($tmp = fread($file, 570)) {
- $body_part = chunk_split(base64_encode($tmp));
+ $body_part = chunk_split(base64_encode($tmp));
+ // Up to 4.3.10 chunk_split always appends a newline,
+ // while in 4.3.11 it doesn't if the string to split
+ // is shorter than the chunk length.
+ if( substr($body_part, -1 , 1 ) != "\n" )
+ $body_part .= "\n";
$length += $this->clean_crlf($body_part);
if ($stream) {
$this->writeToStream($stream, $body_part);
$contenttype = 'Content-Type: '. $mime_header->type0 .'/'.
$mime_header->type1;
if (count($message->entities)) {
- $contenttype .= ";\r\n " . 'boundary="'.$boundary.'"';
+ $contenttype .= ';' . 'boundary="'.$boundary.'"';
}
if (isset($mime_header->parameters['name'])) {
$contenttype .= '; name="'.
$header[] = $contenttype . $rn;
if ($mime_header->description) {
- $header[] .= 'Content-Description: ' . $mime_header->description . $rn;
+ $header[] = 'Content-Description: ' . $mime_header->description . $rn;
}
if ($mime_header->encoding) {
- $encoding = $mime_header->encoding;
- $header[] .= 'Content-Transfer-Encoding: ' . $mime_header->encoding . $rn;
+ $header[] = 'Content-Transfer-Encoding: ' . $mime_header->encoding . $rn;
} else {
if ($mime_header->type0 == 'text' || $mime_header->type0 == 'message') {
- $header[] .= 'Content-Transfer-Encoding: 8bit' . $rn;
+ $header[] = 'Content-Transfer-Encoding: 8bit' . $rn;
+ } else if ($mime_header->type0 == 'multipart' || $mime_header->type0 == 'alternative') {
+ /* no-op; no encoding needed */
} else {
- $header[] .= 'Content-Transfer-Encoding: base64' . $rn;
+ $header[] = 'Content-Transfer-Encoding: base64' . $rn;
}
}
if ($mime_header->id) {
- $header[] .= 'Content-ID: ' . $mime_header->id . $rn;
+ $header[] = 'Content-ID: ' . $mime_header->id . $rn;
}
if ($mime_header->disposition) {
$disposition = $mime_header->disposition;
$header[] = $contentdisp . $rn;
}
if ($mime_header->md5) {
- $header[] .= 'Content-MD5: ' . $mime_header->md5 . $rn;
+ $header[] = 'Content-MD5: ' . $mime_header->md5 . $rn;
}
if ($mime_header->language) {
- $header[] .= 'Content-Language: ' . $mime_header->language . $rn;
+ $header[] = 'Content-Language: ' . $mime_header->language . $rn;
}
$cnt = count($header);
*
* @return string $header
*/
- function prepareRFC822_Header($rfc822_header, $reply_rfc822_header, &$raw_length) {
- global $domain, $version, $username, $skip_SM_header;
-
- /* if server var SERVER_NAME not available, use $domain */
- if(!sqGetGlobalVar('SERVER_NAME', $SERVER_NAME, SQ_SERVER)) {
+ function prepareRFC822_Header(&$rfc822_header, $reply_rfc822_header, &$raw_length) {
+ global $domain, $username, $encode_header_key,
+ $edit_identity, $hide_auth_header;
+
+ /* if server var SERVER_NAME not available, or contains
+ ":" (e.g. IPv6) which is illegal in a Message-ID, use $domain */
+ if(!sqGetGlobalVar('SERVER_NAME', $SERVER_NAME, SQ_SERVER) ||
+ strpos($SERVER_NAME,':') !== FALSE) {
$SERVER_NAME = $domain;
}
$rn = "\r\n";
/* This creates an RFC 822 date */
- $date = date('D, j M Y H:i:s ', mktime()) . $this->timezone();
+ $date = date('D, j M Y H:i:s ', time()) . $this->timezone();
+
/* Create a message-id */
- $message_id = '<' . $REMOTE_PORT . '.' . $REMOTE_ADDR . '.';
- $message_id .= time() . '.squirrel@' . (isset($REMOTE_HOST) ? $REMOTE_HOST : "[$REMOTE_ADDR]") .'>';
+ $message_id = 'MESSAGE ID GENERATION ERROR! PLEASE CONTACT SQUIRRELMAIL DEVELOPERS';
+ if (empty($rfc822_header->message_id)) {
+ $message_id = '<';
+ /* user-specifc data to decrease collision chance */
+ $seed_data = $username . '.';
+ $seed_data .= (!empty($REMOTE_PORT) ? $REMOTE_PORT . '.' : '');
+ $seed_data .= (!empty($REMOTE_ADDR) ? $REMOTE_ADDR . '.' : '');
+ /* add the current time in milliseconds and randomness */
+ $seed_data .= uniqid(mt_rand(),true);
+ /* put it through one-way hash and add it to the ID */
+ $message_id .= md5($seed_data) . '.squirrel@' . $SERVER_NAME .'>';
+ }
+
/* Make an RFC822 Received: line */
if (isset($REMOTE_HOST)) {
$received_from = "$REMOTE_HOST ([$REMOTE_ADDR])";
$received_from .= " (proxying for $HTTP_X_FORWARDED_FOR)";
}
$header = array();
- if ( !isset($skip_SM_header) || !$skip_SM_header )
- {
- $header[] = "Received: from $received_from" . $rn;
- $header[] = " (SquirrelMail authenticated user $username);" . $rn;
- $header[] = " by $SERVER_NAME with HTTP;" . $rn;
- $header[] = " $date" . $rn;
+
+ /**
+ * SquirrelMail header
+ *
+ * This Received: header provides information that allows to track
+ * user and machine that was used to send email. Don't remove it
+ * unless you understand all possible forging issues or your
+ * webmail installation does not prevent changes in user's email address.
+ * See SquirrelMail bug tracker #847107 for more details about it.
+ *
+ * Add hide_squirrelmail_header as a candidate for config_local.php
+ * (must be defined as a constant: define('hide_squirrelmail_header', 1);
+ * to allow completely hiding SquirrelMail participation in message
+ * processing; This is dangerous, especially if users can modify their
+ * account information, as it makes mapping a sent message back to the
+ * original sender almost impossible.
+ */
+ $show_sm_header = ( defined('hide_squirrelmail_header') ? ! hide_squirrelmail_header : 1 );
+
+ // FIXME: The following headers may generate slightly differently between the message sent to the destination and that stored in the Sent folder because this code will be called before both actions. This is not necessarily a big problem, but other headers such as Message-ID and Date are preserved between both actions
+ if ( $show_sm_header ) {
+ if (isset($encode_header_key) &&
+ trim($encode_header_key)!='') {
+ // use encoded headers, if encryption key is set and not empty
+ $header[] = 'X-Squirrel-UserHash: '.OneTimePadEncrypt($username,base64_encode($encode_header_key)).$rn;
+ $header[] = 'X-Squirrel-FromHash: '.OneTimePadEncrypt($this->ip2hex($REMOTE_ADDR),base64_encode($encode_header_key)).$rn;
+ if (isset($HTTP_X_FORWARDED_FOR))
+ $header[] = 'X-Squirrel-ProxyHash:'.OneTimePadEncrypt($this->ip2hex($HTTP_X_FORWARDED_FOR),base64_encode($encode_header_key)).$rn;
+ } else {
+ // use default received headers
+ $header[] = "Received: from $received_from" . $rn;
+ if (!isset($hide_auth_header) || !$hide_auth_header)
+ $header[] = " (SquirrelMail authenticated user $username)" . $rn;
+ $header[] = " by $SERVER_NAME with HTTP;" . $rn;
+ $header[] = " $date" . $rn;
+ }
}
+
/* Insert the rest of the header fields */
- $header[] = 'Message-ID: '. $message_id . $rn;
- if ($reply_rfc822_header->message_id) {
+
+ if (!empty($rfc822_header->message_id)) {
+ $header[] = 'Message-ID: '. $rfc822_header->message_id . $rn;
+ } else {
+ $header[] = 'Message-ID: '. $message_id . $rn;
+ $rfc822_header->message_id = $message_id;
+ }
+
+ if (is_object($reply_rfc822_header) &&
+ isset($reply_rfc822_header->message_id) &&
+ $reply_rfc822_header->message_id) {
$rep_message_id = $reply_rfc822_header->message_id;
- // $this->strip_crlf($message_id);
$header[] = 'In-Reply-To: '.$rep_message_id . $rn;
+ $rfc822_header->in_reply_to = $rep_message_id;
$references = $this->calculate_references($reply_rfc822_header);
$header[] = 'References: '.$references . $rn;
+ $rfc822_header->references = $references;
}
- $header[] = "Date: $date" . $rn;
+
+ if (!empty($rfc822_header->date) && $rfc822_header->date != -1) {
+ $header[] = 'Date: '. $rfc822_header->date . $rn;
+ } else {
+ $header[] = "Date: $date" . $rn;
+ $rfc822_header->date = $date;
+ }
+
$header[] = 'Subject: '.encodeHeader($rfc822_header->subject) . $rn;
$header[] = 'From: '. $rfc822_header->getAddr_s('from',",$rn ",true) . $rn;
- // folding address list [From|To|Cc|Bcc] happens by using ",$rn<space>" as delimiter
+ // folding address list [From|To|Cc|Bcc] happens by using ",$rn<space>"
+ // as delimiter
// Do not use foldLine for that.
// RFC2822 if from contains more then 1 address
}
}
/* Identify SquirrelMail */
- $header[] = 'User-Agent: SquirrelMail/' . $version . $rn;
+ $header[] = 'User-Agent: SquirrelMail/' . SM_VERSION . $rn;
/* Do the MIME-stuff */
$header[] = 'MIME-Version: 1.0' . $rn;
$contenttype = 'Content-Type: '. $rfc822_header->content_type->type0 .'/'.
}
$header[] = $contenttype . $rn;
if ($encoding = $rfc822_header->encoding) {
- $header[] .= 'Content-Transfer-Encoding: ' . $encoding . $rn;
+ $header[] = 'Content-Transfer-Encoding: ' . $encoding . $rn;
}
- if ($rfc822_header->dnt) {
+ if (isset($rfc822_header->dnt) && $rfc822_header->dnt) {
$dnt = $rfc822_header->getAddr_s('dnt');
/* Pegasus Mail */
$header[] = 'X-Confirm-Reading-To: '.$dnt. $rn;
switch($rfc822_header->priority)
{
case 1:
- $header[] = 'X-Priority: 1 (Highest)'.$rn;
- $header[] = 'Importance: High'. $rn; break;
- case 3:
- $header[] = 'X-Priority: 3 (Normal)'.$rn;
- $header[] = 'Importance: Normal'. $rn; break;
+ $header[] = 'X-Priority: 1 (Highest)'.$rn;
+ $header[] = 'Importance: High'. $rn; break;
case 5:
- $header[] = 'X-Priority: 5 (Lowest)'.$rn;
- $header[] = 'Importance: Low'. $rn; break;
+ $header[] = 'X-Priority: 5 (Lowest)'.$rn;
+ $header[] = 'Importance: Low'. $rn; break;
default: break;
}
}
$aRefs = explode(' ',$sRefs);
$sLine = 'References:';
foreach ($aRefs as $sReference) {
- if (strlen($sLine)+strlen($sReference) >76) {
+ if ( trim($sReference) == '' ) {
+ /* Don't add spaces. */
+ } elseif (strlen($sLine)+strlen($sReference) >76) {
$hdr_s .= $sLine;
$sLine = $rn . ' ' . $sReference;
} else {
* @return string $result with timezone and offset
*/
function timezone () {
- global $invert_time;
+ global $invert_time, $show_timezone_name;
$diff_second = date('Z');
if ($invert_time) {
$diff_second = abs($diff_second);
$diff_hour = floor ($diff_second / 3600);
$diff_minute = floor (($diff_second-3600*$diff_hour) / 60);
- $zonename = '('.strftime('%Z').')';
- $result = sprintf ("%s%02d%02d %s", $sign, $diff_hour, $diff_minute,
- $zonename);
+
+ // If an administrator wants to add the timezone name to the
+ // end of the date header, they can set $show_timezone_name
+ // to boolean TRUE in config/config_local.php, but that is
+ // NOT RFC-822 compliant (see section 5.1). Moreover, some
+ // Windows users reported that strftime('%Z') was returning
+ // the full zone name (not the abbreviation) which in some
+ // cases included 8-bit characters (not allowed as is in headers).
+ // The PHP manual actually does NOT promise what %Z will return
+ // for strftime!: "The time zone offset/abbreviation option NOT
+ // given by %z (depends on operating system)"
+ //
+ if ($show_timezone_name) {
+ $zonename = '('.strftime('%Z').')';
+ $result = sprintf ("%s%02d%02d %s", $sign, $diff_hour, $diff_minute, $zonename);
+ } else {
+ $result = sprintf ("%s%02d%02d", $sign, $diff_hour, $diff_minute);
+ }
return ($result);
}
/**
- * function calculate_references - calculate correct Referer string
+ * function calculate_references - calculate correct References string
+ * Adds the current message ID, and makes sure it doesn't grow forever,
+ * to that extent it drops message-ID's in a smart way until the string
+ * length is under the recommended value of 1000 ("References: <986>\r\n").
+ * It always keeps the first and the last three ID's.
*
* @param Rfc822Header $hdr message header to calculate from
*
- * @return string $refer concatenated and trimmed Referer string
+ * @return string $refer concatenated and trimmed References string
*/
function calculate_references($hdr) {
- $refer = $hdr->references;
+ $aReferences = preg_split('/\s+/', $hdr->references);
$message_id = $hdr->message_id;
$in_reply_to = $hdr->in_reply_to;
- if (strlen($refer) > 2) {
- $refer .= ' ' . $message_id;
- } else {
- if ($in_reply_to) {
- $refer .= $in_reply_to . ' ' . $message_id;
- } else {
- $refer .= $message_id;
+
+ // if References already exists, add the current message ID at the end.
+ // no References exists; if we know a IRT, add that aswell
+ if (count($aReferences) == 0 && $in_reply_to) {
+ $aReferences[] = $in_reply_to;
+ }
+ $aReferences[] = $message_id;
+
+ // sanitize the array: trim whitespace, remove dupes
+ array_walk($aReferences, 'sq_trim_value');
+ $aReferences = array_unique($aReferences);
+
+ while ( count($aReferences) > 4 && strlen(implode(' ', $aReferences)) >= 986 ) {
+ $aReferences = array_merge(array_slice($aReferences,0,1),array_slice($aReferences,2));
+ }
+ return implode(' ', $aReferences);
+ }
+
+ /**
+ * Converts ip address to hexadecimal string
+ *
+ * Function is used to convert ipv4 and ipv6 addresses to hex strings.
+ * It removes all delimiter symbols from ip addresses, converts decimal
+ * ipv4 numbers to hex and pads strings in order to present full length
+ * address. ipv4 addresses are represented as 8 byte strings, ipv6 addresses
+ * are represented as 32 byte string.
+ *
+ * If function fails to detect address format, it returns unprocessed string.
+ * @param string $string ip address string
+ * @return string processed ip address string
+ * @since 1.5.1 and 1.4.5
+ */
+ function ip2hex($string) {
+ if (preg_match("/^(\d+)\.(\d+)\.(\d+)\.(\d+)$/",$string,$match)) {
+ // ipv4 address
+ $ret = str_pad(dechex($match[1]),2,'0',STR_PAD_LEFT)
+ . str_pad(dechex($match[2]),2,'0',STR_PAD_LEFT)
+ . str_pad(dechex($match[3]),2,'0',STR_PAD_LEFT)
+ . str_pad(dechex($match[4]),2,'0',STR_PAD_LEFT);
+ } elseif (preg_match("/^([0-9a-h]+)\:([0-9a-h]+)\:([0-9a-h]+)\:([0-9a-h]+)\:([0-9a-h]+)\:([0-9a-h]+)\:([0-9a-h]+)\:([0-9a-h]+)$/i",$string,$match)) {
+ // full ipv6 address
+ $ret = str_pad($match[1],4,'0',STR_PAD_LEFT)
+ . str_pad($match[2],4,'0',STR_PAD_LEFT)
+ . str_pad($match[3],4,'0',STR_PAD_LEFT)
+ . str_pad($match[4],4,'0',STR_PAD_LEFT)
+ . str_pad($match[5],4,'0',STR_PAD_LEFT)
+ . str_pad($match[6],4,'0',STR_PAD_LEFT)
+ . str_pad($match[7],4,'0',STR_PAD_LEFT)
+ . str_pad($match[8],4,'0',STR_PAD_LEFT);
+ } elseif (preg_match("/^\:\:([0-9a-h\:]+)$/i",$string,$match)) {
+ // short ipv6 with all starting symbols nulled
+ $aAddr=explode(':',$match[1]);
+ $ret='';
+ foreach ($aAddr as $addr) {
+ $ret.=str_pad($addr,4,'0',STR_PAD_LEFT);
+ }
+ $ret=str_pad($ret,32,'0',STR_PAD_LEFT);
+ } elseif (preg_match("/^([0-9a-h\:]+)::([0-9a-h\:]+)$/i",$string,$match)) {
+ // short ipv6 with middle part nulled
+ $aStart=explode(':',$match[1]);
+ $sStart='';
+ foreach($aStart as $addr) {
+ $sStart.=str_pad($addr,4,'0',STR_PAD_LEFT);
}
+ $aEnd = explode(':',$match[2]);
+ $sEnd='';
+ foreach($aEnd as $addr) {
+ $sEnd.=str_pad($addr,4,'0',STR_PAD_LEFT);
+ }
+ $ret = $sStart
+ . str_pad('',(32 - strlen($sStart . $sEnd)),'0',STR_PAD_LEFT)
+ . $sEnd;
+ } else {
+ // unknown addressing
+ $ret = $string;
}
- trim($refer);
- return $refer;
+ return $ret;
}
}
-?>
projects / squirrelmail.git / blobdiff