<?php
/***********************************************
* File : tnefparser.php
* Project : Z-Push
* Descr : This is tnef implementation for z-push.
* It is based on Zarafa's tnef implementation.
* This class does only simple reading of a
* tnef stream. Most importantly, we currently
* only support properties within the message itself,
* and do not support recipient tables and
* attachment properties within the TNEF data.
* This class will accept TNEF streams with data about
* recipients and attachments, but the information
* will be ignored.
*
* Created : 21.06.2008
*
* Copyright 2007 - 2013 Zarafa Deutschland GmbH
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation with the following additional
* term according to sec. 7:
*
* According to sec. 7 of the GNU Affero General Public License, version 3,
* the terms of the AGPL are supplemented with the following terms:
*
* "Zarafa" is a registered trademark of Zarafa B.V.
* "Z-Push" is a registered trademark of Zarafa Deutschland GmbH
* The licensing of the Program under the AGPL does not imply a trademark license.
* Therefore any rights, title and interest in our trademarks remain entirely with us.
*
* However, if you propagate an unmodified version of the Program you are
* allowed to use the term "Z-Push" to indicate that you distribute the Program.
* Furthermore you may use our trademarks where it is necessary to indicate
* the intended purpose of a product or service provided you use it in accordance
* with honest practices in industrial or commercial matters.
* If you want to propagate modified versions of the Program under the name "Z-Push",
* you may only do so if you have a written permission by Zarafa Deutschland GmbH
* (to acquire a permission please contact Zarafa at trademark@zarafa.com).
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Consult LICENSE file for details
************************************************/
/**
* For more information on tnef refer to:
* http://msdn.microsoft.com/en-us/library/ms530652(EXCHG.10).aspx
* http://msdn.microsoft.com/en-us/library/cc425498(EXCHG.80).aspx
*
* The mapping between Microsoft Mail IPM classes and those used in
* MAPI see: http://msdn2.microsoft.com/en-us/library/ms527360.aspx
*/
class TNEFParser {
const TNEF_SIGNATURE = 0x223e9f78;
const TNEF_LVL_MESSAGE = 0x01;
const TNEF_LVL_ATTACHMENT = 0x02;
const DWORD = 32;
const WORD = 16;
const BYTE = 8;
/**
* Constructor
* We need a store in order to get the namedpropers
*
* @param mapistore $store
* @param array &$props properties to be set
*
* @access public
*/
public function TNEFParser(&$store, &$props) {
$this->store = $store;
$this->props = $props;
}
/**
* Function reads tnef stream and puts mapi properties into an array.
*
* @param string $tnefstream
* @param array &$mapiprops mapi properties
*
* @access public
* @return int
*/
public function ExtractProps($tnefstream, &$mapiprops) {
$hresult = NOERROR;
$signature = 0; //tnef signature - 32 Bit
$key = 0; //a nonzero 16-bit unsigned integer
$type = 0; // 32-bit value
$size = 0; // 32-bit value
$checksum = 0; //16-bit value
$component = 0; //8-bit value - either self::TNEF_LVL_MESSAGE or self::TNEF_LVL_ATTACHMENT
$buffer = "";
//mapping between Microsoft Mail IPM classes and those in MAPI
$aClassMap = array(
"IPM.Microsoft Schedule.MtgReq" => "IPM.Schedule.Meeting.Request",
"IPM.Microsoft Schedule.MtgRespP" => "IPM.Schedule.Meeting.Resp.Pos",
"IPM.Microsoft Schedule.MtgRespN" => "IPM.Schedule.Meeting.Resp.Neg",
"IPM.Microsoft Schedule.MtgRespA" => "IPM.Schedule.Meeting.Resp.Tent",
"IPM.Microsoft Schedule.MtgCncl" => "IPM.Schedule.Meeting.Canceled",
"IPM.Microsoft Mail.Non-Delivery" => "Report.IPM.Note.NDR",
"IPM.Microsoft Mail.Read Receipt" => "Report.IPM.Note.IPNRN",
"IPM.Microsoft Mail.Note" => "IPM.Note",
"IPM.Microsoft Mail.Note" => "IPM",
);
//read signature
$hresult = $this->readFromTnefStream($tnefstream, self::DWORD, $signature);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: STREAM:".bin2hex($tnefstream));
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading tnef signature");
return $hresult;
}
//check signature
if ($signature != self::TNEF_SIGNATURE) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: Corrupt signature.");
return MAPI_E_CORRUPT_DATA;
}
//read key
$hresult = $this->readFromTnefStream($tnefstream, self::WORD, $key);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading tnef key.");
return $hresult;
}
// File is made of blocks, with each a type and size. Component and Key are ignored.
while(1) {
//the stream is empty. exit
if (strlen($tnefstream) == 0) return NOERROR;
//read component - it is either self::TNEF_LVL_MESSAGE or self::TNEF_LVL_ATTACHMENT
$hresult = $this->readFromTnefStream($tnefstream, self::BYTE, $component);
if ($hresult !== NOERROR) {
$hresult = NOERROR; //EOF -> no error
return $hresult;
break;
}
//read type
$hresult = $this->readFromTnefStream($tnefstream, self::DWORD, $type);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property type");
return $hresult;
}
//read size
$hresult = $this->readFromTnefStream($tnefstream, self::DWORD, $size);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property size");
return $hresult;
}
if ($size == 0) {
// do not allocate 0 size data block
ZLog::Write(LOGLEVEL_WARN, "TNEF: Size is 0. Corrupt data.");
return MAPI_E_CORRUPT_DATA;
}
//read buffer
$hresult = $this->readBuffer($tnefstream, $size, $buffer);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property buffer");
return $hresult;
}
//read checksum
$hresult = $this->readFromTnefStream($tnefstream, self::WORD, $checksum);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property checksum.");
return $hresult;
}
// Loop through all the blocks of the TNEF data. We are only interested
// in the properties block for now (0x00069003)
switch ($type) {
case 0x00069003:
$hresult = $this->readMapiProps($buffer, $size, $mapiprops);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading mapi properties' part.");
return $hresult;
}
break;
case 0x00078008: // PR_MESSAGE_CLASS
$msMailClass = trim($buffer);
if (array_key_exists($msMailClass, $aClassMap)) {
$messageClass = $aClassMap[$msMailClass];
}
else {
$messageClass = $msMailClass;
}
$mapiprops[PR_MESSAGE_CLASS] = $messageClass;
break;
case 0x00050008: // PR_OWNER_APPT_ID
$mapiprops[PR_OWNER_APPT_ID] = $buffer;
break;
case 0x00040009: // PR_RESPONSE_REQUESTED
$mapiprops[PR_RESPONSE_REQUESTED] = $buffer;
break;
// --- TNEF attachemnts ---
case 0x00069002:
break;
case 0x00018010: // PR_ATTACH_FILENAME
break;
case 0x00068011: // PR_ATTACH_RENDERING, extra icon information
break;
case 0x0006800f: // PR_ATTACH_DATA_BIN, will be set via OpenProperty() in ECTNEF::Finish()
break;
case 0x00069005: // Attachment property stream
break;
default:
// Ignore this block
break;
}
}
return NOERROR;
}
/**
* Reads a given number of bits from stream and converts them from little indian in a "normal" order. The function
* also cuts the tnef stream after reading.
*
* @param string &$tnefstream
* @param int $bits
* @param array &$element the read element
*
* @access private
* @return int
*/
private function readFromTnefStream(&$tnefstream, $bits, &$element) {
$bytes = $bits / 8;
$part = substr($tnefstream, 0, $bytes);
$packs = array();
switch ($bits) {
case self::DWORD:
$packs = unpack("V", $part);
break;
case self::WORD:
$packs = unpack("v", $part);
break;
case self::BYTE:
$packs[1] = ord($part[0]);
break;
default:
$packs = array();
break;
}
if (empty($packs) || !isset($packs[1])) return MAPI_E_CORRUPT_DATA;
$tnefstream = substr($tnefstream, $bytes);
$element = $packs[1];
return NOERROR;
}
/**
* Reads a given number of bytes from stream and puts them into $element. The function
* also cuts the tnef stream after reading.
*
* @param string &$tnefstream
* @param int $bytes
* @param array &$element the read element
*
* @access private
* @return int
*/
private function readBuffer(&$tnefstream, $bytes, &$element) {
$element = substr($tnefstream, 0, $bytes);
$tnefstream = substr($tnefstream, $bytes);
return NOERROR;
}
/**
* Reads mapi props from buffer into an anrray.
*
* @param string &$buffer
* @param int $size
* @param array &$mapiprops
*
* @access private
* @return int
*/
function readMapiProps(&$buffer, $size, &$mapiprops) {
$nrprops = 0;
//get number of mapi properties
$hresult = $this->readFromTnefStream($buffer, self::DWORD, $nrprops);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error getting the number of mapi properties in stream.");
return $hresult;
}
$size -= 4;
ZLog::Write(LOGLEVEL_DEBUG, "TNEF: nrprops:$nrprops");
//loop through all the properties and add them to our internal list
while($nrprops) {
$hresult = $this->readSingleMapiProp($buffer, $size, $read, $mapiprops);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading a mapi property.");
ZLog::Write(LOGLEVEL_WARN, "TNEF: result: " . sprintf("0x%X", $hresult));
return $hresult;
}
$nrprops--;
}
return NOERROR;
}
/**
* Reads a single mapi prop.
*
* @param string &$buffer
* @param int $size
* @param mixed &$read
* @param array &$mapiprops
*
* @access private
* @return int
*/
private function readSingleMapiProp(&$buffer, &$size, &$read, &$mapiprops) {
$propTag = 0;
$len = 0;
$origSize = $size;
$isNamedId = 0;
$namedProp = 0;
$count = 0;
$mvProp = 0;
$guid = 0;
if($size < 8) {
return MAPI_E_NOT_FOUND;
}
$hresult = $this->readFromTnefStream($buffer, self::DWORD, $propTag);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading a mapi property tag from the stream.");
return $hresult;
}
$size -= 4;
ZLog::Write(LOGLEVEL_DEBUG, "TNEF: mapi prop type:".dechex(mapi_prop_type($propTag)));
ZLog::Write(LOGLEVEL_DEBUG, "TNEF: mapi prop tag: 0x".sprintf("%04x", mapi_prop_id($propTag)));
if (mapi_prop_id($propTag) >= 0x8000) {
// Named property, first read GUID, then name/id
if($size < 24) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: Corrupt guid size for named property:".dechex($propTag));
return MAPI_E_CORRUPT_DATA;
}
//strip GUID & name/id
$hresult = $this->readBuffer($buffer, 16, $guid);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property buffer");
return $hresult;
}
$size -= 16;
//it is not used and is here only for eventual debugging
$readableGuid = unpack("VV/v2v/n4n", $guid);
$readableGuid = sprintf("{%08x-%04x-%04x-%04x-%04x%04x%04x}",$readableGuid['V'], $readableGuid['v1'], $readableGuid['v2'],$readableGuid['n1'],$readableGuid['n2'],$readableGuid['n3'],$readableGuid['n4']);
ZLog::Write(LOGLEVEL_DEBUG, "TNEF: guid:$readableGuid");
$hresult = $this->readFromTnefStream($buffer, self::DWORD, $isNamedId);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property checksum.");
return $hresult;
}
$size -= 4;
if($isNamedId != 0) {
// A string name follows
//read length of the property
$hresult = $this->readFromTnefStream($buffer, self::DWORD, $len);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading mapi property's length");
return $hresult;
}
$size -= 4;
if ($size < $len) {
return MAPI_E_CORRUPT_DATA;
}
//read the name of the property, eg Keywords
$hresult = $this->readBuffer($buffer, $len, $namedProp);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property buffer");
return $hresult;
}
$size -= $len;
//Re-align
$buffer = substr($buffer, ($len & 3 ? 4 - ($len & 3) : 0));
$size -= $len & 3 ? 4 - ($len & 3) : 0;
}
else {
$hresult = $this->readFromTnefStream($buffer, self::DWORD, $namedProp);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading mapi property's length");
return $hresult;
}
ZLog::Write(LOGLEVEL_DEBUG, "TNEF: named: 0x".sprintf("%04x", $namedProp));
$size -= 4;
}
if ($this->store !== false) {
$named = mapi_getidsfromnames($this->store, array($namedProp), array(makeguid($readableGuid)));
$propTag = mapi_prop_tag(mapi_prop_type($propTag), mapi_prop_id($named[0]));
}
else {
ZLog::Write(LOGLEVEL_WARN, "TNEF: Store not available. It is impossible to get named properties");
}
}
ZLog::Write(LOGLEVEL_DEBUG, "TNEF: mapi prop tag: 0x".sprintf("%04x", mapi_prop_id($propTag))." ".sprintf("%04x", mapi_prop_type($propTag)));
if($propTag & MV_FLAG) {
if($size < 4) {
return MAPI_E_CORRUPT_DATA;
}
//read the number of properties
$hresult = $this->readFromTnefStream($buffer, self::DWORD, $count);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading number of properties for:".dechex($propTag));
return $hresult;
}
$size -= 4;
}
else {
$count = 1;
}
for ($mvProp = 0; $mvProp < $count; $mvProp++) {
switch(mapi_prop_type($propTag) & ~MV_FLAG ) {
case PT_I2:
case PT_LONG:
$hresult = $this->readBuffer($buffer, 4, $value);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property buffer");
return $hresult;
}
$value = unpack("V", $value);
$value = intval($value[1], 16);
if($propTag & MV_FLAG) {
$mapiprops[$propTag][] = $value;
}
else {
$mapiprops[$propTag] = $value;
}
$size -= 4;
ZLog::Write(LOGLEVEL_DEBUG, "TNEF: int or long propvalue:".$value);
break;
case PT_R4:
if($propTag & MV_FLAG) {
$hresult = $this->readBuffer($buffer, 4, $mapiprops[$propTag][]);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property buffer");
return $hresult;
}
}
else {
$hresult = $this->readBuffer($buffer, 4, $mapiprops[$propTag]);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property buffer");
return $hresult;
}
}
$size -= 4;
ZLog::Write(LOGLEVEL_DEBUG, "TNEF: propvalue:".$mapiprops[$propTag]);
break;
case PT_BOOLEAN:
$hresult = $this->readBuffer($buffer, 4, $mapiprops[$propTag]);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property buffer");
return $hresult;
}
$size -= 4;
//reported by dw2412
//cast to integer as it evaluates to 1 or 0 because
//a non empty string evaluates to true :(
$mapiprops[$propTag] = (integer) bin2hex($mapiprops[$propTag]{0});
ZLog::Write(LOGLEVEL_DEBUG, "TNEF: propvalue:".$mapiprops[$propTag]);
break;
case PT_SYSTIME:
if($size < 8) {
return MAPI_E_CORRUPT_DATA;
}
if($propTag & MV_FLAG) {
$hresult = $this->readBuffer($buffer, 8, $mapiprops[$propTag][]);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property buffer");
return $hresult;
}
}
else {
$hresult = $this->readBuffer($buffer, 8, $mapiprops[$propTag]);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property buffer");
return $hresult;
}
}
//we have to convert the filetime to an unixtime timestamp
$filetime = unpack("V2v", $mapiprops[$propTag]);
//php on 64-bit systems converts unsigned values differently than on 32 bit systems
//we need this "fix" in order to get the same values on both types of systems
$filetime['v2'] = substr(sprintf("%08x",$filetime['v2']), -8);
$filetime['v1'] = substr(sprintf("%08x",$filetime['v1']), -8);
$filetime = hexdec($filetime['v2'].$filetime['v1']);
$filetime = ($filetime - 116444736000000000) / 10000000;
$mapiprops[$propTag] = $filetime;
// we have to set the start and end times separately because the standard PR_START_DATE and PR_END_DATE aren't enough
if ($propTag == PR_START_DATE) {
$mapiprops[$this->props["starttime"]] = $mapiprops[$this->props["commonstart"]] = $filetime;
}
if ($propTag == PR_END_DATE) {
$mapiprops[$this->props["endtime"]] = $mapiprops[$this->props["commonend"]] = $filetime;
}
$size -= 8;
ZLog::Write(LOGLEVEL_DEBUG, "TNEF: propvalue:".$mapiprops[$propTag]);
break;
case PT_DOUBLE:
case PT_CURRENCY:
case PT_I8:
case PT_APPTIME:
if($size < 8) {
return MAPI_E_CORRUPT_DATA;
}
if($propTag & MV_FLAG) {
$hresult = $this->readBuffer($buffer, 8, $mapiprops[$propTag][]);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property buffer");
return $hresult;
}
}
else {
$hresult = $this->readBuffer($buffer, 8, $mapiprops[$propTag]);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property buffer");
return $hresult;
}
}
$size -= 8;
ZLog::Write(LOGLEVEL_DEBUG, "TNEF: propvalue:".$mapiprops[$propTag]);
break;
case PT_STRING8:
if($size < 8) {
return MAPI_E_CORRUPT_DATA;
}
// Skip next 4 bytes, it's always '1' (ULONG)
$buffer = substr($buffer, 4);
$size -= 4;
//read length of the property
$hresult = $this->readFromTnefStream($buffer, self::DWORD, $len);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading mapi property's length");
return $hresult;
}
$size -= 4;
if ($size < $len) {
return MAPI_E_CORRUPT_DATA;
}
if ($propTag & MV_FLAG) {
$hresult = $this->readBuffer($buffer, $len, $mapiprops[$propTag][]);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property buffer");
return $hresult;
}
}
else {
$hresult = $this->readBuffer($buffer, $len, $mapiprops[$propTag]);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property buffer");
return $hresult;
}
}
//location fix. it looks like tnef uses this value for location
if (mapi_prop_id($propTag) == 0x8342) {
$mapiprops[$this->props["location"]] = $mapiprops[$propTag];
unset($mapiprops[$propTag]);
}
$size -= $len;
//Re-align
$buffer = substr($buffer, ($len & 3 ? 4 - ($len & 3) : 0));
$size -= $len & 3 ? 4 - ($len & 3) : 0;
ZLog::Write(LOGLEVEL_DEBUG, "TNEF: propvalue:".$mapiprops[$propTag]);
break;
case PT_UNICODE:
if($size < 8) {
return MAPI_E_CORRUPT_DATA;
}
// Skip next 4 bytes, it's always '1' (ULONG)
$buffer = substr($buffer, 4);
$size -= 4;
//read length of the property
$hresult = $this->readFromTnefStream($buffer, self::DWORD, $len);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading mapi property's length");
return $hresult;
}
$size -= 4;
if ($size < $len) {
return MAPI_E_CORRUPT_DATA;
}
//currently unicode strings are not supported bz mapi_setprops, so we'll use PT_STRING8
$propTag = mapi_prop_tag(PT_STRING8, mapi_prop_id($propTag));
if ($propTag & MV_FLAG) {
$hresult = $this->readBuffer($buffer, $len, $mapiprops[$propTag][]);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property buffer");
return $hresult;
}
}
else {
$hresult = $this->readBuffer($buffer, $len, $mapiprops[$propTag]);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property buffer");
return $hresult;
}
}
//location fix. it looks like tnef uses this value for location
if (mapi_prop_id($propTag) == 0x8342) {
$mapiprops[$this->props["location"]] = iconv("UCS-2","windows-1252", $mapiprops[$propTag]);
unset($mapiprops[$propTag]);
}
//convert from unicode to windows encoding
if (isset($mapiprops[$propTag])) $mapiprops[$propTag] = iconv("UCS-2","windows-1252", $mapiprops[$propTag]);
$size -= $len;
//Re-align
$buffer = substr($buffer, ($len & 3 ? 4 - ($len & 3) : 0));
$size -= $len & 3 ? 4 - ($len & 3) : 0;
if (isset($mapiprops[$propTag])) ZLog::Write(LOGLEVEL_DEBUG, "TNEF: propvalue:".$mapiprops[$propTag]);
break;
case PT_OBJECT: // PST sends PT_OBJECT data. Treat as PT_BINARY
case PT_BINARY:
if($size < self::BYTE) {
return MAPI_E_CORRUPT_DATA;
}
// Skip next 4 bytes, it's always '1' (ULONG)
$buffer = substr($buffer, 4);
$size -= 4;
//read length of the property
$hresult = $this->readFromTnefStream($buffer, self::DWORD, $len);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading mapi property's length");
return $hresult;
}
$size -= 4;
if (mapi_prop_type($propTag) == PT_OBJECT) {
// IMessage guid [ 0x00020307 C000 0000 0000 0000 00 00 00 46 ]
$buffer = substr($buffer, 16);
$size -= 16;
$len -= 16;
}
if ($size < $len) {
return MAPI_E_CORRUPT_DATA;
}
if ($propTag & MV_FLAG) {
$hresult = $this->readBuffer($buffer, $len, $mapiprops[$propTag][]);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property buffer");
return $hresult;
}
}
else {
$hresult = $this->readBuffer($buffer, $len, $mapiprops[$propTag]);
if ($hresult !== NOERROR) {
ZLog::Write(LOGLEVEL_WARN, "TNEF: There was an error reading stream property buffer");
return $hresult;
}
}
$size -= $len;
//Re-align
$buffer = substr($buffer, ($len & 3 ? 4 - ($len & 3) : 0));
$size -= $len & 3 ? 4 - ($len & 3) : 0;
ZLog::Write(LOGLEVEL_DEBUG, "TNEF: propvalue:".bin2hex($mapiprops[$propTag]));
break;
default:
return MAPI_E_INVALID_PARAMETER;
break;
}
}
return NOERROR;
}
}