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<?php |
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/** |
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* TraderInteractive\SolveMedia\Service class for accessing the Solve Media API service. |
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* This component has been heavily modified from it's original form to |
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* encapsulate the functionality in a class based structure that is |
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* compatible with class autoloading functionality. |
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* |
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* @author Chris Ryan <[email protected]> |
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*/ |
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namespace TraderInteractive\SolveMedia; |
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use Exception; |
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use GuzzleHttp\ClientInterface; |
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final class Service |
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{ |
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/** |
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* The solvemedia server URL's |
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*/ |
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const ADCOPY_API_SERVER = 'http://api.solvemedia.com'; |
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const ADCOPY_API_SECURE_SERVER = 'https://api-secure.solvemedia.com'; |
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const ADCOPY_VERIFY_SERVER = 'http://verify.solvemedia.com/papi/verify'; |
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const ADCOPY_SIGNUP = 'http://api.solvemedia.com/public/signup'; |
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private $_client; |
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private $_pubkey; |
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private $_privkey; |
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private $_hashkey; |
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/** |
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* Construct a Service object with the required api key values. |
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* |
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* @param ClientInterface $client The guzzle client to send the requests over. |
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* @param string $pubkey A public key for solvemedia |
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* @param string $privkey A private key for solvemedia |
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* @param string $hashkey An optional hash key for verification |
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* @throws Exception |
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*/ |
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public function __construct(ClientInterface $client, $pubkey, $privkey, $hashkey = '') |
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{ |
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if (empty($pubkey) || empty($privkey)) { |
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throw new Exception('To use solvemedia you must get an API key from ' . self::ADCOPY_SIGNUP); |
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} |
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$this->_client = $client; |
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$this->_pubkey = $pubkey; |
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$this->_privkey = $privkey; |
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$this->_hashkey = $hashkey; |
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} |
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/** |
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* Gets the challenge HTML (javascript and non-javascript version). |
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* This is called from the browser, and the resulting solvemedia HTML widget |
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* is embedded within the HTML form it was called from. |
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* |
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* @param string $error The error given by solvemedia (optional, default is null) |
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* @param boolean $useSsl Should the request be made over ssl? (optional, default is false) |
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* @return string The HTML to be embedded in the user's form. |
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*/ |
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public function getHtml($error = null, $useSsl = false) |
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{ |
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$server = $useSsl ? self::ADCOPY_API_SECURE_SERVER : self::ADCOPY_API_SERVER; |
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$errorpart = $error ? ';error=1' : ''; |
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return <<<EOS |
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<script type="text/javascript" src="{$server}/papi/challenge.script?k={$this->_pubkey}{$errorpart}"></script> |
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<noscript> |
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<iframe src="{$server}/papi/challenge.noscript?k={$this->_pubkey}{$errorpart}" height="300" width="500" frameborder="0"></iframe><br/> |
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<textarea name="adcopy_challenge" rows="3" cols="40"></textarea> |
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<input type="hidden" name="adcopy_response" value="manual_challenge"/> |
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</noscript> |
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EOS; |
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} |
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/** |
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* Calls an HTTP POST function to verify if the user's guess was correct |
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* |
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* @param string $remoteip |
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* @param string $challenge |
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* @param string $response |
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* @throws Exception |
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* @return TraderInteractive\SolveMedia\Response |
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*/ |
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public function checkAnswer($remoteip, $challenge, $response) |
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{ |
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if (empty($remoteip)) { |
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throw new Exception('For security reasons, you must pass the remote ip to solvemedia'); |
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} |
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//discard spam submissions |
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if (empty($challenge) || empty($response)) { |
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return new Response(false, 'incorrect-solution'); |
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} |
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$httpResponse = $this->_client->request( |
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'POST', |
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self::ADCOPY_VERIFY_SERVER, |
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[ |
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'headers' => ['User-Agent' => 'solvemedia/PHP'], |
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'form_params' => [ |
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'privatekey' => $this->_privkey, |
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'remoteip' => $remoteip, |
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'challenge' => $challenge, |
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'response' => $response, |
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], |
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] |
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); |
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if ($httpResponse->getStatusCode() !== 200) { |
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return new Response(false, $httpResponse->getReasonPhrase()); |
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} |
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$answers = explode("\n", (string)$httpResponse->getBody()); |
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if (!empty($this->_hashkey)) { |
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// validate message authenticator |
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$hash = sha1($answers[0] . $challenge . $this->_hashkey); |
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if ($hash !== $answers[2]) { |
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return new Response(false, 'hash-fail'); |
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} |
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} |
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if (trim($answers[0]) !== 'true') { |
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return new Response(false, $answers[1]); |
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} |
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return new Response(true); |
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} |
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/** |
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* Gets a URL where the user can sign up for solvemedia. If your application |
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* has a configuration page where you enter a key, you should provide a link |
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* using this function. |
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* |
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* @param string $domain The domain where the page is hosted |
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* @param string $appname The name of your application |
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* @return string url for signup page |
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*/ |
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public function getSignupUrl($domain = null, $appname = null) |
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{ |
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return self::ADCOPY_SIGNUP . '?' . http_build_query(['domain' => $domain, 'app' => $appname]); |
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} |
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} |
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traderinteractive /
solvemedia-client-php
