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PhabricatorMetaMTAReceivedMail.php
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Mon, Jun 10, 21:00

PhabricatorMetaMTAReceivedMail.php
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<?php
/*
* Copyright 2011 Facebook, Inc.
*
* 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.
*/
class PhabricatorMetaMTAReceivedMail extends PhabricatorMetaMTADAO {
protected $headers = array();
protected $bodies = array();
protected $attachments = array();
protected $relatedPHID;
protected $authorPHID;
protected $message;
public function getConfiguration() {
return array(
self::CONFIG_SERIALIZATION => array(
'headers' => self::SERIALIZATION_JSON,
'bodies' => self::SERIALIZATION_JSON,
'attachments' => self::SERIALIZATION_JSON,
),
) + parent::getConfiguration();
}
public function setHeaders(array $headers) {
// Normalize headers to lowercase.
$normalized = array();
foreach ($headers as $name => $value) {
$normalized[strtolower($name)] = $value;
}
$this->headers = $normalized;
return $this;
}
public function processReceivedMail() {
$to = idx($this->headers, 'to');
// Accept a match either at the beginning of the address or after an open
// angle bracket, as in:
// "some display name" <D1+xyz+asdf@example.com>
$matches = null;
$ok = preg_match(
'/(?:^|<)((?:D|T)\d+)\+(\d+)\+([a-f0-9]{16})@/U',
$to,
$matches);
if (!$ok) {
return $this->setMessage("Unrecognized 'to' format: {$to}")->save();
}
$receiver_name = $matches[1];
$user_id = $matches[2];
$hash = $matches[3];
$user = id(new PhabricatorUser())->load($user_id);
if (!$user) {
return $this->setMessage("Invalid user '{$user_id}'")->save();
}
if ($user->getIsDisabled()) {
return $this->setMessage("User '{$user_id}' is disabled")->save();
}
$this->setAuthorPHID($user->getPHID());
$receiver = self::loadReceiverObject($receiver_name);
if (!$receiver) {
return $this->setMessage("Invalid object '{$receiver_name}'")->save();
}
$this->setRelatedPHID($receiver->getPHID());
$expect_hash = self::computeMailHash(
$receiver->getMailKey(),
$user->getPHID());
if ($expect_hash != $hash) {
return $this->setMessage("Invalid mail hash!")->save();
}
if ($receiver instanceof ManiphestTask) {
$editor = new ManiphestTransactionEditor();
$handler = $editor->buildReplyHandler($receiver);
} else if ($receiver instanceof DifferentialRevision) {
$handler = DifferentialMail::newReplyHandlerForRevision($receiver);
}
$handler->setActor($user);
$handler->receiveEmail($this);
$this->setMessage('OK');
return $this->save();
}
public function getCleanTextBody() {
$body = idx($this->bodies, 'text');
// TODO: Refine this "algorithm".
$lines = explode("\n", trim($body));
for ($ii = 0; $ii < count($lines); $ii++) {
if (preg_match('/^\s*On\b.*\bwrote:\s*$/', $lines[$ii])) {
$lines = array_slice($lines, 0, $ii);
break;
}
}
return trim(implode("\n", $lines));
}
public static function loadReceiverObject($receiver_name) {
if (!$receiver_name) {
return null;
}
$receiver_type = $receiver_name[0];
$receiver_id = substr($receiver_name, 1);
$class_obj = null;
switch ($receiver_type) {
case 'T':
$class_obj = newv('ManiphestTask', array());
break;
case 'D':
$class_obj = newv('DifferentialRevision', array());
break;
default:
return null;
}
return $class_obj->load($receiver_id);
}
public static function computeMailHash($mail_key, $phid) {
$global_mail_key = PhabricatorEnv::getEnvConfig('phabricator.mail-key');
$hash = sha1($mail_key.$global_mail_key.$phid);
return substr($hash, 0, 16);
}
}

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