| 1 |
<?php |
| 2 |
namespace Enteraddons\Classes; |
| 3 |
/** |
| 4 |
* Super-simple, minimum abenteraction MailChimp API v3 wrapper |
| 5 |
* MailChimp API v3: http://developer.mailchimp.com |
| 6 |
* This wrapper: https://github.com/drewm/mailchimp-api |
| 7 |
* |
| 8 |
* @author Drew McLellan <drew.mclellan@gmail.com> |
| 9 |
* @version 2.5 |
| 10 |
*/ |
| 11 |
class Mail_Chimp |
| 12 |
{ |
| 13 |
private $api_key; |
| 14 |
private $api_endpoint = 'https://<dc>.api.mailchimp.com/3.0'; |
| 15 |
|
| 16 |
const TIMEOUT = 10; |
| 17 |
|
| 18 |
/* SSL Verification |
| 19 |
Read before disabling: |
| 20 |
http://snippets.webaware.com.au/howto/stop-turning-off-curlopt_ssl_verifypeer-and-fix-your-php-config/ |
| 21 |
*/ |
| 22 |
public $verify_ssl = true; |
| 23 |
|
| 24 |
private $request_successful = false; |
| 25 |
private $last_error = ''; |
| 26 |
private $last_response = array(); |
| 27 |
private $last_request = array(); |
| 28 |
|
| 29 |
/** |
| 30 |
* Create a new instance |
| 31 |
* |
| 32 |
* @param string $api_key Your MailChimp API key |
| 33 |
* @param string $api_endpoint Optional custom API endpoint |
| 34 |
* |
| 35 |
* @throws \Exception |
| 36 |
*/ |
| 37 |
public function __construct($api_key, $api_endpoint = null) |
| 38 |
{ |
| 39 |
if (!function_exists('curl_init') || !function_exists('curl_setopt')) { |
| 40 |
throw new \Exception("cURL support is required, but can't be found."); |
| 41 |
} |
| 42 |
|
| 43 |
$this->api_key = $api_key; |
| 44 |
|
| 45 |
if ($api_endpoint === null) { |
| 46 |
if (strpos($this->api_key, '-') === false) { |
| 47 |
throw new \Exception("Invalid MailChimp API key supplied."); |
| 48 |
} |
| 49 |
list(, $data_center) = explode('-', $this->api_key); |
| 50 |
$this->api_endpoint = str_replace('<dc>', $data_center, $this->api_endpoint); |
| 51 |
} else { |
| 52 |
$this->api_endpoint = $api_endpoint; |
| 53 |
} |
| 54 |
|
| 55 |
$this->last_response = array('headers' => null, 'body' => null); |
| 56 |
} |
| 57 |
|
| 58 |
/** |
| 59 |
* Create a new instance of a Batch request. Optionally with the ID of an existing batch. |
| 60 |
* |
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* @param string $batch_id Optional ID of an existing batch, if you need to check its status for example. |
| 62 |
* |
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* @return Batch New Batch object. |
| 64 |
*/ |
| 65 |
public function new_batch($batch_id = null) |
| 66 |
{ |
| 67 |
return new Batch($this, $batch_id); |
| 68 |
} |
| 69 |
|
| 70 |
/** |
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* @return string The url to the API endpoint |
| 72 |
*/ |
| 73 |
public function getApiEndpoint() |
| 74 |
{ |
| 75 |
return $this->api_endpoint; |
| 76 |
} |
| 77 |
|
| 78 |
/** |
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* Convert an email address into a 'subscriber hash' for identifying the subscriber in a method URL |
| 80 |
* |
| 81 |
* @param string $email The subscriber's email address |
| 82 |
* |
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* @return string Hashed version of the input |
| 84 |
*/ |
| 85 |
public function subscriberHash($email) |
| 86 |
{ |
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return md5(strtolower($email)); |
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} |
| 89 |
|
| 90 |
/** |
| 91 |
* Was the last request successful? |
| 92 |
* |
| 93 |
* @return bool True for success, false for failure |
| 94 |
*/ |
| 95 |
public function success() |
| 96 |
{ |
| 97 |
return $this->request_successful; |
| 98 |
} |
| 99 |
|
| 100 |
/** |
| 101 |
* Get the last error returned by either the network transport, or by the API. |
| 102 |
* If something didn't work, this should contain the string describing the problem. |
| 103 |
* |
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* @return string|false describing the error |
| 105 |
*/ |
| 106 |
public function getLastError() |
| 107 |
{ |
| 108 |
return $this->last_error ?: false; |
| 109 |
} |
| 110 |
|
| 111 |
/** |
| 112 |
* Get an array containing the HTTP headers and the body of the API response. |
| 113 |
* |
| 114 |
* @return array Assoc array with keys 'headers' and 'body' |
| 115 |
*/ |
| 116 |
public function getLastResponse() |
| 117 |
{ |
| 118 |
return $this->last_response; |
| 119 |
} |
| 120 |
|
| 121 |
/** |
| 122 |
* Get an array containing the HTTP headers and the body of the API request. |
| 123 |
* |
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* @return array Assoc array |
| 125 |
*/ |
| 126 |
public function getLastRequest() |
| 127 |
{ |
| 128 |
return $this->last_request; |
| 129 |
} |
| 130 |
|
| 131 |
/** |
| 132 |
* Make an HTTP DELETE request - for deleting data |
| 133 |
* |
| 134 |
* @param string $method URL of the API request method |
| 135 |
* @param array $args Assoc array of arguments (if any) |
| 136 |
* @param int $timeout Timeout limit for request in seconds |
| 137 |
* |
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* @return array|false Assoc array of API response, decoded from JSON |
| 139 |
*/ |
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public function delete($method, $args = array(), $timeout = self::TIMEOUT) |
| 141 |
{ |
| 142 |
return $this->makeRequest('delete', $method, $args, $timeout); |
| 143 |
} |
| 144 |
|
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/** |
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* Make an HTTP GET request - for retrieving data |
| 147 |
* |
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* @param string $method URL of the API request method |
| 149 |
* @param array $args Assoc array of arguments (usually your data) |
| 150 |
* @param int $timeout Timeout limit for request in seconds |
| 151 |
* |
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* @return array|false Assoc array of API response, decoded from JSON |
| 153 |
*/ |
| 154 |
public function get($method, $args = array(), $timeout = self::TIMEOUT) |
| 155 |
{ |
| 156 |
return $this->makeRequest('get', $method, $args, $timeout); |
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} |
| 158 |
|
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/** |
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* Make an HTTP PATCH request - for performing partial updates |
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* |
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* @param string $method URL of the API request method |
| 163 |
* @param array $args Assoc array of arguments (usually your data) |
| 164 |
* @param int $timeout Timeout limit for request in seconds |
| 165 |
* |
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* @return array|false Assoc array of API response, decoded from JSON |
| 167 |
*/ |
| 168 |
public function patch($method, $args = array(), $timeout = self::TIMEOUT) |
| 169 |
{ |
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return $this->makeRequest('patch', $method, $args, $timeout); |
| 171 |
} |
| 172 |
|
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/** |
| 174 |
* Make an HTTP POST request - for creating and updating items |
| 175 |
* |
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* @param string $method URL of the API request method |
| 177 |
* @param array $args Assoc array of arguments (usually your data) |
| 178 |
* @param int $timeout Timeout limit for request in seconds |
| 179 |
* |
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* @return array|false Assoc array of API response, decoded from JSON |
| 181 |
*/ |
| 182 |
public function post($method, $args = array(), $timeout = self::TIMEOUT) |
| 183 |
{ |
| 184 |
return $this->makeRequest('post', $method, $args, $timeout); |
| 185 |
} |
| 186 |
|
| 187 |
/** |
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* Make an HTTP PUT request - for creating new items |
| 189 |
* |
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* @param string $method URL of the API request method |
| 191 |
* @param array $args Assoc array of arguments (usually your data) |
| 192 |
* @param int $timeout Timeout limit for request in seconds |
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* |
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* @return array|false Assoc array of API response, decoded from JSON |
| 195 |
*/ |
| 196 |
public function put($method, $args = array(), $timeout = self::TIMEOUT) |
| 197 |
{ |
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return $this->makeRequest('put', $method, $args, $timeout); |
| 199 |
} |
| 200 |
|
| 201 |
/** |
| 202 |
* Performs the underlying HTTP request. Not very exciting. |
| 203 |
* |
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* @param string $http_verb The HTTP verb to use: get, post, put, patch, delete |
| 205 |
* @param string $method The API method to be called |
| 206 |
* @param array $args Assoc array of parameters to be passed |
| 207 |
* @param int $timeout |
| 208 |
* |
| 209 |
* @return array|false Assoc array of decoded result |
| 210 |
*/ |
| 211 |
private function makeRequest($http_verb, $method, $args = array(), $timeout = self::TIMEOUT) |
| 212 |
{ |
| 213 |
$url = $this->api_endpoint . '/' . $method; |
| 214 |
|
| 215 |
$response = $this->prepareStateForRequest($http_verb, $method, $url, $timeout); |
| 216 |
|
| 217 |
$httpHeader = array( |
| 218 |
'Accept: application/vnd.api+json', |
| 219 |
'Content-Type: application/vnd.api+json', |
| 220 |
'Authorization: apikey ' . $this->api_key |
| 221 |
); |
| 222 |
|
| 223 |
if (isset($args["language"])) { |
| 224 |
$httpHeader[] = "Accept-Language: " . $args["language"]; |
| 225 |
} |
| 226 |
|
| 227 |
$ch = curl_init(); |
| 228 |
curl_setopt($ch, CURLOPT_URL, $url); |
| 229 |
curl_setopt($ch, CURLOPT_HTTPHEADER, $httpHeader); |
| 230 |
curl_setopt($ch, CURLOPT_USERAGENT, 'DrewM/MailChimp-API/3.0 (github.com/drewm/mailchimp-api)'); |
| 231 |
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); |
| 232 |
curl_setopt($ch, CURLOPT_VERBOSE, true); |
| 233 |
curl_setopt($ch, CURLOPT_HEADER, true); |
| 234 |
curl_setopt($ch, CURLOPT_TIMEOUT, $timeout); |
| 235 |
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, $this->verify_ssl); |
| 236 |
curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0); |
| 237 |
curl_setopt($ch, CURLOPT_ENCODING, ''); |
| 238 |
curl_setopt($ch, CURLINFO_HEADER_OUT, true); |
| 239 |
|
| 240 |
switch ($http_verb) { |
| 241 |
case 'post': |
| 242 |
curl_setopt($ch, CURLOPT_POST, true); |
| 243 |
$this->attachRequestPayload($ch, $args); |
| 244 |
break; |
| 245 |
|
| 246 |
case 'get': |
| 247 |
$query = http_build_query($args, '', '&'); |
| 248 |
curl_setopt($ch, CURLOPT_URL, $url . '?' . $query); |
| 249 |
break; |
| 250 |
|
| 251 |
case 'delete': |
| 252 |
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'DELETE'); |
| 253 |
break; |
| 254 |
|
| 255 |
case 'patch': |
| 256 |
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PATCH'); |
| 257 |
$this->attachRequestPayload($ch, $args); |
| 258 |
break; |
| 259 |
|
| 260 |
case 'put': |
| 261 |
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PUT'); |
| 262 |
$this->attachRequestPayload($ch, $args); |
| 263 |
break; |
| 264 |
} |
| 265 |
|
| 266 |
$responseContent = curl_exec($ch); |
| 267 |
$response['headers'] = curl_getinfo($ch); |
| 268 |
$response = $this->setResponseState($response, $responseContent, $ch); |
| 269 |
$formattedResponse = $this->formatResponse($response); |
| 270 |
|
| 271 |
curl_close($ch); |
| 272 |
|
| 273 |
$isSuccess = $this->determineSuccess($response, $formattedResponse, $timeout); |
| 274 |
|
| 275 |
return is_array($formattedResponse) ? $formattedResponse : $isSuccess; |
| 276 |
} |
| 277 |
|
| 278 |
/** |
| 279 |
* @param string $http_verb |
| 280 |
* @param string $method |
| 281 |
* @param string $url |
| 282 |
* @param integer $timeout |
| 283 |
* |
| 284 |
* @return array |
| 285 |
*/ |
| 286 |
private function prepareStateForRequest($http_verb, $method, $url, $timeout) |
| 287 |
{ |
| 288 |
$this->last_error = ''; |
| 289 |
|
| 290 |
$this->request_successful = false; |
| 291 |
|
| 292 |
$this->last_response = array( |
| 293 |
'headers' => null, // array of details from curl_getinfo() |
| 294 |
'httpHeaders' => null, // array of HTTP headers |
| 295 |
'body' => null // content of the response |
| 296 |
); |
| 297 |
|
| 298 |
$this->last_request = array( |
| 299 |
'method' => $http_verb, |
| 300 |
'path' => $method, |
| 301 |
'url' => $url, |
| 302 |
'body' => '', |
| 303 |
'timeout' => $timeout, |
| 304 |
); |
| 305 |
|
| 306 |
return $this->last_response; |
| 307 |
} |
| 308 |
|
| 309 |
/** |
| 310 |
* Get the HTTP headers as an array of header-name => header-value pairs. |
| 311 |
* |
| 312 |
* The "Link" header is parsed into an associative array based on the |
| 313 |
* rel names it contains. The original value is available under |
| 314 |
* the "_raw" key. |
| 315 |
* |
| 316 |
* @param string $headersAsString |
| 317 |
* |
| 318 |
* @return array |
| 319 |
*/ |
| 320 |
private function getHeadersAsArray($headersAsString) |
| 321 |
{ |
| 322 |
$headers = array(); |
| 323 |
|
| 324 |
foreach (explode("\r\n", $headersAsString) as $i => $line) { |
| 325 |
if ($i === 0) { // HTTP code |
| 326 |
continue; |
| 327 |
} |
| 328 |
|
| 329 |
$line = trim($line); |
| 330 |
if (empty($line)) { |
| 331 |
continue; |
| 332 |
} |
| 333 |
|
| 334 |
list($key, $value) = explode(': ', $line); |
| 335 |
|
| 336 |
if ($key == 'Link') { |
| 337 |
$value = array_merge( |
| 338 |
array('_raw' => $value), |
| 339 |
$this->getLinkHeaderAsArray($value) |
| 340 |
); |
| 341 |
} |
| 342 |
|
| 343 |
$headers[$key] = $value; |
| 344 |
} |
| 345 |
|
| 346 |
return $headers; |
| 347 |
} |
| 348 |
|
| 349 |
/** |
| 350 |
* Extract all rel => URL pairs from the provided Link header value |
| 351 |
* |
| 352 |
* Mailchimp only implements the URI reference and relation type from |
| 353 |
* RFC 5988, so the value of the header is something like this: |
| 354 |
* |
| 355 |
* 'https://us13.api.mailchimp.com/schema/3.0/Lists/Instance.json; rel="describedBy", |
| 356 |
* <https://us13.admin.mailchimp.com/lists/members/?id=XXXX>; rel="dashboard"' |
| 357 |
* |
| 358 |
* @param string $linkHeaderAsString |
| 359 |
* |
| 360 |
* @return array |
| 361 |
*/ |
| 362 |
private function getLinkHeaderAsArray($linkHeaderAsString) |
| 363 |
{ |
| 364 |
$urls = array(); |
| 365 |
|
| 366 |
if (preg_match_all('/<(.*?)>\s*;\s*rel="(.*?)"\s*/', $linkHeaderAsString, $matches)) { |
| 367 |
foreach ($matches[2] as $i => $relName) { |
| 368 |
$urls[$relName] = $matches[1][$i]; |
| 369 |
} |
| 370 |
} |
| 371 |
|
| 372 |
return $urls; |
| 373 |
} |
| 374 |
|
| 375 |
/** |
| 376 |
* Encode the data and attach it to the request |
| 377 |
* |
| 378 |
* @param resource $ch cURL session handle, used by reference |
| 379 |
* @param array $data Assoc array of data to attach |
| 380 |
*/ |
| 381 |
private function attachRequestPayload(&$ch, $data) |
| 382 |
{ |
| 383 |
$encoded = wp_json_encode($data); |
| 384 |
$this->last_request['body'] = $encoded; |
| 385 |
curl_setopt($ch, CURLOPT_POSTFIELDS, $encoded); |
| 386 |
} |
| 387 |
|
| 388 |
/** |
| 389 |
* Decode the response and format any error messages for debugging |
| 390 |
* |
| 391 |
* @param array $response The response from the curl request |
| 392 |
* |
| 393 |
* @return array|false The JSON decoded into an array |
| 394 |
*/ |
| 395 |
private function formatResponse($response) |
| 396 |
{ |
| 397 |
$this->last_response = $response; |
| 398 |
|
| 399 |
if (!empty($response['body'])) { |
| 400 |
return json_decode($response['body'], true); |
| 401 |
} |
| 402 |
|
| 403 |
return false; |
| 404 |
} |
| 405 |
|
| 406 |
/** |
| 407 |
* Do post-request formatting and setting state from the response |
| 408 |
* |
| 409 |
* @param array $response The response from the curl request |
| 410 |
* @param string $responseContent The body of the response from the curl request |
| 411 |
* @param resource $ch The curl resource |
| 412 |
* |
| 413 |
* @return array The modified response |
| 414 |
*/ |
| 415 |
private function setResponseState($response, $responseContent, $ch) |
| 416 |
{ |
| 417 |
if ($responseContent === false) { |
| 418 |
$this->last_error = curl_error($ch); |
| 419 |
} else { |
| 420 |
|
| 421 |
$headerSize = $response['headers']['header_size']; |
| 422 |
|
| 423 |
$response['httpHeaders'] = $this->getHeadersAsArray(substr($responseContent, 0, $headerSize)); |
| 424 |
$response['body'] = substr($responseContent, $headerSize); |
| 425 |
|
| 426 |
if (isset($response['headers']['request_header'])) { |
| 427 |
$this->last_request['headers'] = $response['headers']['request_header']; |
| 428 |
} |
| 429 |
} |
| 430 |
|
| 431 |
return $response; |
| 432 |
} |
| 433 |
|
| 434 |
/** |
| 435 |
* Check if the response was successful or a failure. If it failed, store the error. |
| 436 |
* |
| 437 |
* @param array $response The response from the curl request |
| 438 |
* @param array|false $formattedResponse The response body payload from the curl request |
| 439 |
* @param int $timeout The timeout supplied to the curl request. |
| 440 |
* |
| 441 |
* @return bool If the request was successful |
| 442 |
*/ |
| 443 |
private function determineSuccess($response, $formattedResponse, $timeout) |
| 444 |
{ |
| 445 |
$status = $this->findHTTPStatus($response, $formattedResponse); |
| 446 |
|
| 447 |
if ($status >= 200 && $status <= 299) { |
| 448 |
$this->request_successful = true; |
| 449 |
return true; |
| 450 |
} |
| 451 |
|
| 452 |
if (isset($formattedResponse['detail'])) { |
| 453 |
$this->last_error = sprintf('%d: %s', $formattedResponse['status'], $formattedResponse['detail']); |
| 454 |
return false; |
| 455 |
} |
| 456 |
|
| 457 |
if ($timeout > 0 && $response['headers'] && $response['headers']['total_time'] >= $timeout) { |
| 458 |
$this->last_error = sprintf('Request timed out after %f seconds.', $response['headers']['total_time']); |
| 459 |
return false; |
| 460 |
} |
| 461 |
|
| 462 |
$this->last_error = 'Unknown error, call getLastResponse() to find out what happened.'; |
| 463 |
return false; |
| 464 |
} |
| 465 |
|
| 466 |
/** |
| 467 |
* Find the HTTP status code from the headers or API response body |
| 468 |
* |
| 469 |
* @param array $response The response from the curl request |
| 470 |
* @param array|false $formattedResponse The response body payload from the curl request |
| 471 |
* |
| 472 |
* @return int HTTP status code |
| 473 |
*/ |
| 474 |
private function findHTTPStatus($response, $formattedResponse) |
| 475 |
{ |
| 476 |
if (!empty($response['headers']) && isset($response['headers']['http_code'])) { |
| 477 |
return (int)$response['headers']['http_code']; |
| 478 |
} |
| 479 |
|
| 480 |
if (!empty($response['body']) && isset($formattedResponse['status'])) { |
| 481 |
return (int)$formattedResponse['status']; |
| 482 |
} |
| 483 |
|
| 484 |
return 418; |
| 485 |
} |
| 486 |
} |
