ses.php
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ses.php
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	<?php
	/**
	*
	* Copyright (c) 2011, Dan Myers.
	* Parts copyright (c) 2008, Donovan Schonknecht.
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are met:
	*
	* - Redistributions of source code must retain the above copyright notice,
	* this list of conditions and the following disclaimer.
	* - Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	* POSSIBILITY OF SUCH DAMAGE.
	*
	* This is a modified BSD license (the third clause has been removed).
	* The BSD license may be found here:
	* http://www.opensource.org/licenses/bsd-license.php
	*
	* Amazon Simple Email Service is a trademark of Amazon.com, Inc. or its affiliates.
	*
	* SimpleEmailService is based on Donovan Schonknecht's Amazon S3 PHP class, found here:
	* http://undesigned.org.za/2007/10/22/amazon-s3-php-class
	*
	*/

	/**
	* Amazon SimpleEmailService PHP class
	*
	* @link http://sourceforge.net/projects/php-aws-ses/
	* version 0.8.1
	*
	*/
	class SimpleEmailService
	{
	protected $__accessKey; // AWS Access key
	protected $__secretKey; // AWS Secret key
	protected $__host;

	public function getAccessKey() { return $this->__accessKey; }
	public function getSecretKey() { return $this->__secretKey; }
	public function getHost() { return $this->__host; }

	protected $__verifyHost = 1;
	protected $__verifyPeer = 1;

	// verifyHost and verifyPeer determine whether curl verifies ssl certificates.
	// It may be necessary to disable these checks on certain systems.
	// These only have an effect if SSL is enabled.
	public function verifyHost() { return $this->__verifyHost; }
	public function enableVerifyHost($enable = true) { $this->__verifyHost = $enable; }

	public function verifyPeer() { return $this->__verifyPeer; }
	public function enableVerifyPeer($enable = true) { $this->__verifyPeer = $enable; }

	// If you use exceptions, errors will be communicated by throwing a
	// SimpleEmailServiceException. By default, they will be trigger_error()'d.
	protected $__useExceptions = 0;
	public function useExceptions() { return $this->__useExceptions; }
	public function enableUseExceptions($enable = true) { $this->__useExceptions = $enable; }

	/**
	* Constructor
	*
	* @param string $accessKey Access key
	* @param string $secretKey Secret key
	* @return void
	*/
	public function __construct($accessKey = null, $secretKey = null, $host = 'email.us-east-1.amazonaws.com') {
	if (!function_exists('simplexml_load_string')) {
	throw new Exception(
	pht(
	'The PHP SimpleXML extension is not available, but this '.
	'extension is required to send mail via Amazon SES, because '.
	'Amazon SES returns API responses in XML format. Install or '.
	'enable the SimpleXML extension.'));
	}

	// Catch mistakes with reading the wrong column out of the SES
	// documentation. See T10728.
	if (preg_match('(-smtp)', $host)) {
	throw new Exception(
	pht(
	'Amazon SES is not configured correctly: the configured SES '.
	'endpoint ("%s") is an SMTP endpoint. Instead, use an API (HTTPS) '.
	'endpoint.',
	$host));
	}

	if ($accessKey !== null && $secretKey !== null) {
	$this->setAuth($accessKey, $secretKey);
	}

	$this->__host = $host;
	}

	/**
	* Set AWS access key and secret key
	*
	* @param string $accessKey Access key
	* @param string $secretKey Secret key
	* @return void
	*/
	public function setAuth($accessKey, $secretKey) {
	$this->__accessKey = $accessKey;
	$this->__secretKey = $secretKey;
	}

	/**
	* Lists the email addresses that have been verified and can be used as the 'From' address
	*
	* @return An array containing two items: a list of verified email addresses, and the request id.
	*/
	public function listVerifiedEmailAddresses() {
	$rest = new SimpleEmailServiceRequest($this, 'GET');
	$rest->setParameter('Action', 'ListVerifiedEmailAddresses');

	$rest = $rest->getResponse();

	$response = array();
	if(!isset($rest->body)) {
	return $response;
	}

	$addresses = array();
	foreach($rest->body->ListVerifiedEmailAddressesResult->VerifiedEmailAddresses->member as $address) {
	$addresses[] = (string)$address;
	}

	$response['Addresses'] = $addresses;
	$response['RequestId'] = (string)$rest->body->ResponseMetadata->RequestId;

	return $response;
	}

	/**
	* Requests verification of the provided email address, so it can be used
	* as the 'From' address when sending emails through SimpleEmailService.
	*
	* After submitting this request, you should receive a verification email
	* from Amazon at the specified address containing instructions to follow.
	*
	* @param string email The email address to get verified
	* @return The request id for this request.
	*/
	public function verifyEmailAddress($email) {
	$rest = new SimpleEmailServiceRequest($this, 'POST');
	$rest->setParameter('Action', 'VerifyEmailAddress');
	$rest->setParameter('EmailAddress', $email);

	$rest = $rest->getResponse();

	$response['RequestId'] = (string)$rest->body->ResponseMetadata->RequestId;
	return $response;
	}

	/**
	* Removes the specified email address from the list of verified addresses.
	*
	* @param string email The email address to remove
	* @return The request id for this request.
	*/
	public function deleteVerifiedEmailAddress($email) {
	$rest = new SimpleEmailServiceRequest($this, 'DELETE');
	$rest->setParameter('Action', 'DeleteVerifiedEmailAddress');
	$rest->setParameter('EmailAddress', $email);

	$rest = $rest->getResponse();

	$response['RequestId'] = (string)$rest->body->ResponseMetadata->RequestId;
	return $response;
	}

	/**
	* Retrieves information on the current activity limits for this account.
	* See http://docs.amazonwebservices.com/ses/latest/APIReference/API_GetSendQuota.html
	*
	* @return An array containing information on this account's activity limits.
	*/
	public function getSendQuota() {
	$rest = new SimpleEmailServiceRequest($this, 'GET');
	$rest->setParameter('Action', 'GetSendQuota');

	$rest = $rest->getResponse();

	$response = array();
	if(!isset($rest->body)) {
	return $response;
	}

	$response['Max24HourSend'] = (string)$rest->body->GetSendQuotaResult->Max24HourSend;
	$response['MaxSendRate'] = (string)$rest->body->GetSendQuotaResult->MaxSendRate;
	$response['SentLast24Hours'] = (string)$rest->body->GetSendQuotaResult->SentLast24Hours;
	$response['RequestId'] = (string)$rest->body->ResponseMetadata->RequestId;

	return $response;
	}

	/**
	* Retrieves statistics for the last two weeks of activity on this account.
	* See http://docs.amazonwebservices.com/ses/latest/APIReference/API_GetSendStatistics.html
	*
	* @return An array of activity statistics. Each array item covers a 15-minute period.
	*/
	public function getSendStatistics() {
	$rest = new SimpleEmailServiceRequest($this, 'GET');
	$rest->setParameter('Action', 'GetSendStatistics');

	$rest = $rest->getResponse();

	$response = array();
	if(!isset($rest->body)) {
	return $response;
	}

	$datapoints = array();
	foreach($rest->body->GetSendStatisticsResult->SendDataPoints->member as $datapoint) {
	$p = array();
	$p['Bounces'] = (string)$datapoint->Bounces;
	$p['Complaints'] = (string)$datapoint->Complaints;
	$p['DeliveryAttempts'] = (string)$datapoint->DeliveryAttempts;
	$p['Rejects'] = (string)$datapoint->Rejects;
	$p['Timestamp'] = (string)$datapoint->Timestamp;

	$datapoints[] = $p;
	}

	$response['SendDataPoints'] = $datapoints;
	$response['RequestId'] = (string)$rest->body->ResponseMetadata->RequestId;

	return $response;
	}


	public function sendRawEmail($raw) {
	$rest = new SimpleEmailServiceRequest($this, 'POST');
	$rest->setParameter('Action', 'SendRawEmail');
	$rest->setParameter('RawMessage.Data', base64_encode($raw));

	$rest = $rest->getResponse();

	$response['MessageId'] = (string)$rest->body->SendEmailResult->MessageId;
	$response['RequestId'] = (string)$rest->body->ResponseMetadata->RequestId;
	return $response;
	}

	/**
	* Given a SimpleEmailServiceMessage object, submits the message to the service for sending.
	*
	* @return An array containing the unique identifier for this message and a separate request id.
	* Returns false if the provided message is missing any required fields.
	*/
	public function sendEmail($sesMessage) {
	if(!$sesMessage->validate()) {
	return false;
	}

	$rest = new SimpleEmailServiceRequest($this, 'POST');
	$rest->setParameter('Action', 'SendEmail');

	$i = 1;
	foreach($sesMessage->to as $to) {
	$rest->setParameter('Destination.ToAddresses.member.'.$i, $to);
	$i++;
	}

	if(is_array($sesMessage->cc)) {
	$i = 1;
	foreach($sesMessage->cc as $cc) {
	$rest->setParameter('Destination.CcAddresses.member.'.$i, $cc);
	$i++;
	}
	}

	if(is_array($sesMessage->bcc)) {
	$i = 1;
	foreach($sesMessage->bcc as $bcc) {
	$rest->setParameter('Destination.BccAddresses.member.'.$i, $bcc);
	$i++;
	}
	}

	if(is_array($sesMessage->replyto)) {
	$i = 1;
	foreach($sesMessage->replyto as $replyto) {
	$rest->setParameter('ReplyToAddresses.member.'.$i, $replyto);
	$i++;
	}
	}

	$rest->setParameter('Source', $sesMessage->from);

	if($sesMessage->returnpath != null) {
	$rest->setParameter('ReturnPath', $sesMessage->returnpath);
	}

	if($sesMessage->subject != null && strlen($sesMessage->subject) > 0) {
	$rest->setParameter('Message.Subject.Data', $sesMessage->subject);
	if($sesMessage->subjectCharset != null && strlen($sesMessage->subjectCharset) > 0) {
	$rest->setParameter('Message.Subject.Charset', $sesMessage->subjectCharset);
	}
	}


	if($sesMessage->messagetext != null && strlen($sesMessage->messagetext) > 0) {
	$rest->setParameter('Message.Body.Text.Data', $sesMessage->messagetext);
	if($sesMessage->messageTextCharset != null && strlen($sesMessage->messageTextCharset) > 0) {
	$rest->setParameter('Message.Body.Text.Charset', $sesMessage->messageTextCharset);
	}
	}

	if($sesMessage->messagehtml != null && strlen($sesMessage->messagehtml) > 0) {
	$rest->setParameter('Message.Body.Html.Data', $sesMessage->messagehtml);
	if($sesMessage->messageHtmlCharset != null && strlen($sesMessage->messageHtmlCharset) > 0) {
	$rest->setParameter('Message.Body.Html.Charset', $sesMessage->messageHtmlCharset);
	}
	}

	$rest = $rest->getResponse();

	$response['MessageId'] = (string)$rest->body->SendEmailResult->MessageId;
	$response['RequestId'] = (string)$rest->body->ResponseMetadata->RequestId;
	return $response;
	}

	/**
	* Trigger an error message
	*
	* @internal Used by member functions to output errors
	* @param array $error Array containing error information
	* @return string
	*/
	public function __triggerError($functionname, $error)
	{
	if($error == false) {
	$message = sprintf("SimpleEmailService::%s(): Encountered an error, but no description given", $functionname);
	}
	else if(isset($error['curl']) && $error['curl'])
	{
	$message = sprintf("SimpleEmailService::%s(): %s %s", $functionname, $error['code'], $error['message']);
	}
	else if(isset($error['Error']))
	{
	$e = $error['Error'];
	$message = sprintf("SimpleEmailService::%s(): %s - %s: %s\nRequest Id: %s\n", $functionname, $e['Type'], $e['Code'], $e['Message'], $error['RequestId']);
	}

	if ($this->useExceptions()) {
	throw new SimpleEmailServiceException($message);
	} else {
	trigger_error($message, E_USER_WARNING);
	}
	}

	/**
	* Callback handler for 503 retries.
	*
	* @internal Used by SimpleDBRequest to call the user-specified callback, if set
	* @param $attempt The number of failed attempts so far
	* @return The retry delay in microseconds, or 0 to stop retrying.
	*/
	public function __executeServiceTemporarilyUnavailableRetryDelay($attempt)
	{
	if(is_callable($this->__serviceUnavailableRetryDelayCallback)) {
	$callback = $this->__serviceUnavailableRetryDelayCallback;
	return $callback($attempt);
	}
	return 0;
	}
	}

	final class SimpleEmailServiceRequest
	{
	private $ses, $verb, $parameters = array();
	public $response;

	/**
	* Constructor
	*
	* @param string $ses The SimpleEmailService object making this request
	* @param string $action action
	* @param string $verb HTTP verb
	* @return mixed
	*/
	function __construct($ses, $verb) {
	$this->ses = $ses;
	$this->verb = $verb;
	$this->response = new STDClass;
	$this->response->error = false;
	}

	/**
	* Set request parameter
	*
	* @param string $key Key
	* @param string $value Value
	* @param boolean $replace Whether to replace the key if it already exists (default true)
	* @return void
	*/
	public function setParameter($key, $value, $replace = true) {
	if(!$replace && isset($this->parameters[$key]))
	{
	$temp = (array)($this->parameters[$key]);
	$temp[] = $value;
	$this->parameters[$key] = $temp;
	}
	else
	{
	$this->parameters[$key] = $value;
	}
	}

	/**
	* Get the response
	*
	* @return object \| false
	*/
	public function getResponse() {

	$params = array();
	foreach ($this->parameters as $var => $value)
	{
	if(is_array($value))
	{
	foreach($value as $v)
	{
	$params[] = $var.'='.$this->__customUrlEncode($v);
	}
	}
	else
	{
	$params[] = $var.'='.$this->__customUrlEncode($value);
	}
	}

	sort($params, SORT_STRING);

	// must be in format 'Sun, 06 Nov 1994 08:49:37 GMT'
	$date = gmdate('D, d M Y H:i:s e');

	$query = implode('&', $params);

	$headers = array();
	$headers[] = 'Date: '.$date;
	$headers[] = 'Host: '.$this->ses->getHost();

	$auth = 'AWS3-HTTPS AWSAccessKeyId='.$this->ses->getAccessKey();
	$auth .= ',Algorithm=HmacSHA256,Signature='.$this->__getSignature($date);
	$headers[] = 'X-Amzn-Authorization: '.$auth;

	$url = 'https://'.$this->ses->getHost().'/';

	// Basic setup
	$curl = curl_init();
	curl_setopt($curl, CURLOPT_USERAGENT, 'SimpleEmailService/php');

	curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, ($this->ses->verifyHost() ? 2 : 0));
	curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, ($this->ses->verifyPeer() ? 1 : 0));

	// Request types
	switch ($this->verb) {
	case 'GET':
	$url .= '?'.$query;
	break;
	case 'POST':
	curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $this->verb);
	curl_setopt($curl, CURLOPT_POSTFIELDS, $query);
	$headers[] = 'Content-Type: application/x-www-form-urlencoded';
	break;
	case 'DELETE':
	$url .= '?'.$query;
	curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'DELETE');
	break;
	default: break;
	}
	curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
	curl_setopt($curl, CURLOPT_HEADER, false);

	curl_setopt($curl, CURLOPT_URL, $url);
	curl_setopt($curl, CURLOPT_RETURNTRANSFER, false);
	curl_setopt($curl, CURLOPT_WRITEFUNCTION, array(&$this, '__responseWriteCallback'));
	curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);

	// Execute, grab errors
	if (!curl_exec($curl)) {
	throw new SimpleEmailServiceException(
	pht(
	'Encountered an error while making an HTTP request to Amazon SES '.
	'(cURL Error #%d): %s',
	curl_errno($curl),
	curl_error($curl)));
	}

	$this->response->code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
	if ($this->response->code != 200) {
	throw new SimpleEmailServiceException(
	pht(
	'Unexpected HTTP status while making request to Amazon SES: '.
	'expected 200, got %s.',
	$this->response->code));
	}

	@curl_close($curl);

	// Parse body into XML
	if ($this->response->error === false && isset($this->response->body)) {
	$this->response->body = simplexml_load_string($this->response->body);

	// Grab SES errors
	if (!in_array($this->response->code, array(200, 201, 202, 204))
	&& isset($this->response->body->Error)) {
	$error = $this->response->body->Error;
	$output = array();
	$output['curl'] = false;
	$output['Error'] = array();
	$output['Error']['Type'] = (string)$error->Type;
	$output['Error']['Code'] = (string)$error->Code;
	$output['Error']['Message'] = (string)$error->Message;
	$output['RequestId'] = (string)$this->response->body->RequestId;

	$this->response->error = $output;
	unset($this->response->body);
	}
	}

	return $this->response;
	}

	/**
	* CURL write callback
	*
	* @param resource &$curl CURL resource
	* @param string &$data Data
	* @return integer
	*/
	private function __responseWriteCallback(&$curl, &$data) {
	if(!isset($this->response->body)) $this->response->body = '';
	$this->response->body .= $data;
	return strlen($data);
	}

	/**
	* Contributed by afx114
	* URL encode the parameters as per http://docs.amazonwebservices.com/AWSECommerceService/latest/DG/index.html?Query_QueryAuth.html
	* PHP's rawurlencode() follows RFC 1738, not RFC 3986 as required by Amazon. The only difference is the tilde (~), so convert it back after rawurlencode
	* See: http://www.morganney.com/blog/API/AWS-Product-Advertising-API-Requires-a-Signed-Request.php
	*
	* @param string $var String to encode
	* @return string
	*/
	private function __customUrlEncode($var) {
	return str_replace('%7E', '~', rawurlencode($var));
	}

	/**
	* Generate the auth string using Hmac-SHA256
	*
	* @internal Used by SimpleDBRequest::getResponse()
	* @param string $string String to sign
	* @return string
	*/
	private function __getSignature($string) {
	return base64_encode(hash_hmac('sha256', $string, $this->ses->getSecretKey(), true));
	}
	}


	final class SimpleEmailServiceMessage {

	// these are public for convenience only
	// these are not to be used outside of the SimpleEmailService class!
	public $to, $cc, $bcc, $replyto;
	public $from, $returnpath;
	public $subject, $messagetext, $messagehtml;
	public $subjectCharset, $messageTextCharset, $messageHtmlCharset;

	function __construct() {
	$to = array();
	$cc = array();
	$bcc = array();
	$replyto = array();

	$from = null;
	$returnpath = null;

	$subject = null;
	$messagetext = null;
	$messagehtml = null;

	$subjectCharset = null;
	$messageTextCharset = null;
	$messageHtmlCharset = null;
	}


	/**
	* addTo, addCC, addBCC, and addReplyTo have the following behavior:
	* If a single address is passed, it is appended to the current list of addresses.
	* If an array of addresses is passed, that array is merged into the current list.
	*/
	function addTo($to) {
	if(!is_array($to)) {
	$this->to[] = $to;
	}
	else {
	$this->to = array_merge($this->to, $to);
	}
	}

	function addCC($cc) {
	if(!is_array($cc)) {
	$this->cc[] = $cc;
	}
	else {
	$this->cc = array_merge($this->cc, $cc);
	}
	}

	function addBCC($bcc) {
	if(!is_array($bcc)) {
	$this->bcc[] = $bcc;
	}
	else {
	$this->bcc = array_merge($this->bcc, $bcc);
	}
	}

	function addReplyTo($replyto) {
	if(!is_array($replyto)) {
	$this->replyto[] = $replyto;
	}
	else {
	$this->replyto = array_merge($this->replyto, $replyto);
	}
	}

	function setFrom($from) {
	$this->from = $from;
	}

	function setReturnPath($returnpath) {
	$this->returnpath = $returnpath;
	}

	function setSubject($subject) {
	$this->subject = $subject;
	}

	function setSubjectCharset($charset) {
	$this->subjectCharset = $charset;
	}

	function setMessageFromString($text, $html = null) {
	$this->messagetext = $text;
	$this->messagehtml = $html;
	}

	function setMessageFromFile($textfile, $htmlfile = null) {
	if(file_exists($textfile) && is_file($textfile) && is_readable($textfile)) {
	$this->messagetext = file_get_contents($textfile);
	}
	if(file_exists($htmlfile) && is_file($htmlfile) && is_readable($htmlfile)) {
	$this->messagehtml = file_get_contents($htmlfile);
	}
	}

	function setMessageFromURL($texturl, $htmlurl = null) {
	$this->messagetext = file_get_contents($texturl);
	if($htmlurl !== null) {
	$this->messagehtml = file_get_contents($htmlurl);
	}
	}

	function setMessageCharset($textCharset, $htmlCharset = null) {
	$this->messageTextCharset = $textCharset;
	$this->messageHtmlCharset = $htmlCharset;
	}

	/**
	* Validates whether the message object has sufficient information to submit a request to SES.
	* This does not guarantee the message will arrive, nor that the request will succeed;
	* instead, it makes sure that no required fields are missing.
	*
	* This is used internally before attempting a SendEmail or SendRawEmail request,
	* but it can be used outside of this file if verification is desired.
	* May be useful if e.g. the data is being populated from a form; developers can generally
	* use this function to verify completeness instead of writing custom logic.
	*
	* @return boolean
	*/
	public function validate() {
	if(count($this->to) == 0)
	return false;
	if($this->from == null \|\| strlen($this->from) == 0)
	return false;
	if($this->messagetext == null)
	return false;
	return true;
	}
	}


	/**
	* Thrown by SimpleEmailService when errors occur if you call
	* enableUseExceptions(true).
	*/
	final class SimpleEmailServiceException extends Exception {

	}

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