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<title>[9107] sites/trunk/wordpress.org/public_html/wp-content/plugins/official-wordpress-events/meetup: Official WordPress Events: Tweak Meetup client to try to avoid auth token probs</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="http://meta.trac.wordpress.org/changeset/9107">9107</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"http://meta.trac.wordpress.org/changeset/9107","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>coreymckrill</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2019-08-17 00:35:04 +0000 (Sat, 17 Aug 2019)</dd>
</dl>

<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Official WordPress Events: Tweak Meetup client to try to avoid auth token probs

This attempts to avoid the scenario where the client has somehow stored an
oauth token that is expired/invalid, and keeps using it for requests anyway.
Now it will try to detect when the token it has isn't working and refresh it
without breaking the current request cycle.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#sitestrunkwordpressorgpublic_htmlwpcontentpluginsofficialwordpresseventsmeetupclassapiclientphp">sites/trunk/wordpress.org/public_html/wp-content/plugins/official-wordpress-events/meetup/class-api-client.php</a></li>
<li><a href="#sitestrunkwordpressorgpublic_htmlwpcontentpluginsofficialwordpresseventsmeetupclassmeetupclientphp">sites/trunk/wordpress.org/public_html/wp-content/plugins/official-wordpress-events/meetup/class-meetup-client.php</a></li>
<li><a href="#sitestrunkwordpressorgpublic_htmlwpcontentpluginsofficialwordpresseventsmeetupclassmeetupoauth2clientphp">sites/trunk/wordpress.org/public_html/wp-content/plugins/official-wordpress-events/meetup/class-meetup-oauth2-client.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="sitestrunkwordpressorgpublic_htmlwpcontentpluginsofficialwordpresseventsmeetupclassapiclientphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: sites/trunk/wordpress.org/public_html/wp-content/plugins/official-wordpress-events/meetup/class-api-client.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordpress.org/public_html/wp-content/plugins/official-wordpress-events/meetup/class-api-client.php    2019-08-16 18:50:58 UTC (rev 9106)
+++ sites/trunk/wordpress.org/public_html/wp-content/plugins/official-wordpress-events/meetup/class-api-client.php      2019-08-17 00:35:04 UTC (rev 9107)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -38,6 +38,16 @@
</span><span class="cx" style="display: block; padding: 0 10px">        protected $breaking_response_codes = [];
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        /**
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         * @var string|null The URL for the current request being attempted.
+        */
+       protected $current_request_url = null;
+
+       /**
+        * @var array|null The args for the current request being attempted.
+        */
+       protected $current_request_args = null;
+
+       /**
</ins><span class="cx" style="display: block; padding: 0 10px">          * API_Client constructor.
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><span class="cx" style="display: block; padding: 0 10px">         * @param array $settings {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -85,8 +95,12 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        $args['timeout'] = 15;
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                // Set current request in state so it can be manipulated between request attempts if necessary.
+               $this->current_request_url  = $url;
+               $this->current_request_args = $args;
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 while ( $attempt_count < $max_attempts ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        $response      = wp_remote_request( $url, $args );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 $response      = wp_remote_request( $this->current_request_url, $this->current_request_args );
</ins><span class="cx" style="display: block; padding: 0 10px">                         $response_code = wp_remote_retrieve_response_code( $response );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                        // This is called before breaking in case a new request is made immediately.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -117,7 +131,16 @@
</span><span class="cx" style="display: block; padding: 0 10px">                         * @param int   $attempt_count
</span><span class="cx" style="display: block; padding: 0 10px">                         * @param int   $max_attempts
</span><span class="cx" style="display: block; padding: 0 10px">                         */
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        do_action( 'api_client_tenacious_remote_request_attempt', $response, compact( 'url', 'args' ), $attempt_count, $max_attempts );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 do_action(
+                               'api_client_tenacious_remote_request_attempt',
+                               $response,
+                               array(
+                                       'url'  => $this->current_request_url,
+                                       'args' => $this->current_request_args,
+                               ),
+                               $attempt_count,
+                               $max_attempts
+                       );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                        if ( $attempt_count < $max_attempts ) {
</span><span class="cx" style="display: block; padding: 0 10px">                                $retry_after = wp_remote_retrieve_header( $response, 'retry-after' ) ?: 5;
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -129,6 +152,10 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        }
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                // Reset current request.
+               $this->current_request_url  = null;
+               $this->current_request_args = null;
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 if ( $attempt_count === $max_attempts && ( 200 !== $response_code || is_wp_error( $response ) ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        self::cli_message( "\nRequest failed $attempt_count times. Giving up." );
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -224,6 +251,28 @@
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        /**
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         * Merge two error objects into one, new error object.
+        *
+        * @param WP_Error $error1 An error object.
+        * @param WP_Error $error2 An error object.
+        *
+        * @return WP_Error The combined errors of the two parameters.
+        */
+       protected function merge_errors( WP_Error $error1, WP_Error $error2 ) {
+               $codes = $error2->get_error_codes();
+
+               foreach ( $codes as $code ) {
+                       $messages = $error2->get_error_messages( $code );
+
+                       foreach ( $messages as $message ) {
+                               $error1->add( $code, $message );
+                       }
+               }
+
+               return $error1;
+       }
+
+       /**
</ins><span class="cx" style="display: block; padding: 0 10px">          * Outputs a message when the command is run from the PHP command line.
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><span class="cx" style="display: block; padding: 0 10px">         * @param string $message
</span></span></pre></div>
<a id="sitestrunkwordpressorgpublic_htmlwpcontentpluginsofficialwordpresseventsmeetupclassmeetupclientphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: sites/trunk/wordpress.org/public_html/wp-content/plugins/official-wordpress-events/meetup/class-meetup-client.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordpress.org/public_html/wp-content/plugins/official-wordpress-events/meetup/class-meetup-client.php 2019-08-16 18:50:58 UTC (rev 9106)
+++ sites/trunk/wordpress.org/public_html/wp-content/plugins/official-wordpress-events/meetup/class-meetup-client.php   2019-08-17 00:35:04 UTC (rev 9107)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -72,15 +72,48 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        )
</span><span class="cx" style="display: block; padding: 0 10px">                );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $this->oauth_client = new Meetup_OAuth2_Client;
-               $this->debug        = $settings['debug'];
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $this->debug = $settings['debug'];
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                if ( $this->debug ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        self::cli_message( "Meetup Client debug is ON. Results will be truncated." );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 self::cli_message( "Meetup Client debug is on. Results will be truncated." );
</ins><span class="cx" style="display: block; padding: 0 10px">                 }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+               $this->oauth_client = new Meetup_OAuth2_Client;
+
+               if ( ! empty( $this->oauth_client->error->get_error_messages() ) ) {
+                       $this->error = $this->merge_errors( $this->error, $this->oauth_client->error );
+               }
+
+               add_action( 'api_client_tenacious_remote_request_attempt', array( $this, 'maybe_reset_oauth_token' ) );
</ins><span class="cx" style="display: block; padding: 0 10px">         }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        /**
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         * Attempt to fix authorization errors before they permanently fail.
+        *
+        * Hooked to `api_client_tenacious_remote_request_attempt` so that a request that has failed due to an invalid
+        * oauth token can be retried after resetting the token.
+        *
+        * @param array $response
+        *
+        * @return void
+        */
+       public function maybe_reset_oauth_token( $response ) {
+               $code = wp_remote_retrieve_response_code( $response );
+               $body = json_decode( wp_remote_retrieve_body( $response ), true );
+
+               if ( 400 === $code && ! empty( $body['error'] ) && 'invalid_grant' === $body['error'] ) {
+                       $this->oauth_client->reset_oauth_token();
+
+                       if ( ! empty( $this->oauth_client->error->get_error_messages() ) ) {
+                               $this->error = $this->merge_errors( $this->error, $this->oauth_client->error );
+                       }
+
+                       // Reset the request headers, so that they include the new oauth token.
+                       $this->current_request_args = $this->get_request_args();
+               }
+       }
+
+       /**
</ins><span class="cx" style="display: block; padding: 0 10px">          * Send a paginated request to the Meetup API and return the aggregated response.
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><span class="cx" style="display: block; padding: 0 10px">         * This automatically paginates requests and will repeat requests to ensure all results are retrieved.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -122,7 +155,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                                $request_url = $this->get_next_url( $response );
</span><span class="cx" style="display: block; padding: 0 10px">                        } else {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                $this->handle_error_response( $response );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         $this->handle_error_response( $response, $request_url );
</ins><span class="cx" style="display: block; padding: 0 10px">                                 break;
</span><span class="cx" style="display: block; padding: 0 10px">                        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -167,7 +200,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                );
</span><span class="cx" style="display: block; padding: 0 10px">                        }
</span><span class="cx" style="display: block; padding: 0 10px">                } else {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        $this->handle_error_response( $response );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 $this->handle_error_response( $response, $request_url );
</ins><span class="cx" style="display: block; padding: 0 10px">                 }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                if ( ! empty( $this->error->get_error_messages() ) ) {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -294,6 +327,11 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                        $error['message']
</span><span class="cx" style="display: block; padding: 0 10px">                                );
</span><span class="cx" style="display: block; padding: 0 10px">                        }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                } elseif ( isset( $data['error'], $data['error_description'] ) ) {
+                       $this->error->add(
+                               $data['error'],
+                               $data['error_description']
+                       );
</ins><span class="cx" style="display: block; padding: 0 10px">                 } elseif ( isset( $data['code'] ) && isset( $data['details'] ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        $this->error->add(
</span><span class="cx" style="display: block; padding: 0 10px">                                $data['code'],
</span></span></pre></div>
<a id="sitestrunkwordpressorgpublic_htmlwpcontentpluginsofficialwordpresseventsmeetupclassmeetupoauth2clientphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: sites/trunk/wordpress.org/public_html/wp-content/plugins/official-wordpress-events/meetup/class-meetup-oauth2-client.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordpress.org/public_html/wp-content/plugins/official-wordpress-events/meetup/class-meetup-oauth2-client.php  2019-08-16 18:50:58 UTC (rev 9106)
+++ sites/trunk/wordpress.org/public_html/wp-content/plugins/official-wordpress-events/meetup/class-meetup-oauth2-client.php    2019-08-17 00:35:04 UTC (rev 9107)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -96,6 +96,9 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                404, // Unable to find group
</span><span class="cx" style="display: block; padding: 0 10px">                        ),
</span><span class="cx" style="display: block; padding: 0 10px">                ) );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+               // Pre-cache the oauth token.
+               $this->get_oauth_token();
</ins><span class="cx" style="display: block; padding: 0 10px">         }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        /**
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -310,6 +313,24 @@
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        /**
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         * Un-cache any existing oauth token and request a new one.
+        *
+        * This also resets the error property so that it has a clean slate when it attempts to request a new token.
+        *
+        * Useful if a token stops working during a batch of requests :/
+        *
+        * @return void
+        */
+       public function reset_oauth_token() {
+               delete_site_option( self::SITE_OPTION_KEY_OAUTH );
+
+               $this->oauth_token = array();
+               $this->error       = new WP_Error();
+
+               $this->get_oauth_token();
+       }
+
+       /**
</ins><span class="cx" style="display: block; padding: 0 10px">          * Check if a token array has the required keys.
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><span class="cx" style="display: block; padding: 0 10px">         * @param array  $token The token array to check.
</span></span></pre>
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