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<?php

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class wfCurlInterceptionFailedException extends RuntimeException {

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}

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class wfCurlInterceptor {

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const HOOK_NAME = 'http_api_curl';

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private $handle = null;

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private $options = array();

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private $requireInterception;

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public function __construct($requireInterception = true) {

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$this->requireInterception = $requireInterception;

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}

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private function reset() {

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$this->handle = null;

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}

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public function setOption($option, $value) {

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$this->options[$option] = $value;

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}

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public function getHandle() {

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return $this->handle;

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}

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public function handleHook($handle) {

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$this->handle = $handle;

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curl_setopt_array($handle, $this->options);

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}

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public function intercept($callable) {

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$this->reset();

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$action = array($this, 'handleHook');

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add_action(self::HOOK_NAME, $action);

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$result = $callable();

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if ($this->handle === null && $this->requireInterception)

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throw new wfCurlInterceptionFailedException('Hook was not invoked with a valid cURL handle');

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remove_action(self::HOOK_NAME, $action);

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return $result;

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}

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}

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