285 lines
9.7 KiB
PHP
285 lines
9.7 KiB
PHP
<?php defined("SYSPATH") or die("No direct script access.");
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/**
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* Gallery - a web based photo album viewer and editor
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* Copyright (C) 2000-2011 Bharat Mediratta
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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class Twitter_Controller extends Controller {
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/**
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* Verify credentials and redirect based on response from Twitter.
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*/
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public function callback() {
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require_once(MODPATH . "twitter/lib/twitteroauth.php");
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$consumer_key = module::get_var("twitter", "consumer_key");
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$consumer_secret = module::get_var("twitter", "consumer_secret");
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$oauth_token = Session::instance()->get("twitter_oauth_token");
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$oauth_token_secret = Session::instance()->get("twitter_oauth_token_secret");
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$item_url = Session::instance()->get("twitter_item_redirect");
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// If the oauth_token is old redirect to the connect page
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if (isset($_REQUEST['oauth_token']) && $oauth_token !== $_REQUEST['oauth_token']) {
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Session::instance()->set("twitter_oauth_status", "old_token");
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$this->_clear_session();
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url::redirect(url::site("twitter/redirect"));
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}
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// Create TwitteroAuth object with app key/secret and token key/secret from default phase
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$connection = new TwitterOAuth($consumer_key, $consumer_secret, $oauth_token, $oauth_token_secret);
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// Request access tokens from twitter
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$access_token = $connection->getAccessToken($_REQUEST['oauth_verifier']);
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// Save the access tokens
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Session::instance()->set("twitter_access_token", $access_token);
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// Remove no longer needed request tokens
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Session::instance()->delete("twitter_oauth_token");
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Session::instance()->delete("twitter_oauth_token_secret");
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// If HTTP response is 200 continue otherwise send to connect page to retry
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if (200 == $connection->http_code) {
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// The user has been verified and the access tokens can be saved for future use
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$this->save_user($access_token);
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// Redirect to the tweet form
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$item = ORM::factory("item", $item_id);
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url::redirect(url::abs_site($item_url));
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} else {
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// @todo Log HTTP status for application log and/or error message
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$this->_clear_session();
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url::redirect(url::site("twitter/redirect"));
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}
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}
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/**
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* Display Twitter status dialog.
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* @param int $item_id
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*/
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public function dialog($item_id) {
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$item = ORM::factory("item", $item_id);
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$form = twitter::get_tweet_form($item);
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// Ensure user has permission
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access::required("view", $item);
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$user_id = identity::active_user()->id;
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$token_is_set = $this->_is_token_set($user_id);
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$v = new View("twitter_dialog.html");
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$v->is_registered = twitter::is_registered();
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$v->user_token_set = $token_is_set;
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if ($token_is_set) {
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$v->type = $item->type;
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$v->title = $item->title;
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$v->description = $item->description;
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$v->form = $form;
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$v->character_count = twitter::$character_count;
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} else {
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$item_url = urlencode(url::abs_site($item->relative_url_cache));
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$v->user_id = $user_id;
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$v->twitter_auth_url = url::site("twitter/redirect?item_url=$item_url");
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}
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print $v;
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}
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/**
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* Redirect user to Twitter authorization page.
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*/
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function redirect() {
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require_once(MODPATH . "twitter/lib/twitteroauth.php");
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$consumer_key = module::get_var("twitter", "consumer_key");
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$consumer_secret = module::get_var("twitter", "consumer_secret");
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$oauth_callback = url::abs_site("twitter/callback");
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// We'll want this after Twitter kicks back to our callback
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if (!empty($_GET['item_url'])) {
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Session::instance()->set("twitter_item_redirect", $_GET['item_url']);
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}
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// Build TwitterOAuth object with client credentials
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$connection = new TwitterOAuth($consumer_key, $consumer_secret);
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// Get temporary credentials.
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$request_token = $connection->getRequestToken($oauth_callback);
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// Save temporary credentials to session.
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Session::instance()->set("twitter_oauth_token", $request_token['oauth_token']);
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Session::instance()->set("twitter_oauth_token_secret", $request_token['oauth_token_secret']);
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// If last connection failed don't display authorization link
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if (200 == $connection->http_code) {
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// Build authorize URL and redirect user to Twitter
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$url = $connection->getAuthorizeURL($request_token["oauth_token"]);
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url::redirect(url::site($url));
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} else {
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// Show notification if something went wrong
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message::success(t("Could not connect to Twitter. Refresh the page or try again later."));
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url::redirect(url::site($url));
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}
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}
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/**
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* Save tweets sent and those not sent because of Twitter API issues
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* @param integer $item_id
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* @param object $tweet The tweet sent, or the tweet that couldn't be sent
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*/
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public function save_tweet($tweet) {
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if (!empty($tweet->item_id) && !empty($tweet->tweet) && !empty($tweet->status)) {
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$t = ORM::factory("twitter_tweet");
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$t->created = time();
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$t->item_id = $tweet->item_id;
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$t->twitter_id = $tweet->twitter_id;
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$t->tweet = $tweet->tweet;
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$t->status = $tweet->status;
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$t->user_id = identity::active_user()->id;
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$t->save();
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}
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}
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/**
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* Save or update the current user's Twitter credentials.
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* @param array $access_token
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* @todo Ensure only one record per twitter_screen_name
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*/
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function save_user($access_token) {
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$u = ORM::factory("twitter_user");
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$u->oauth_token = $access_token["oauth_token"];
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$u->oauth_token_secret = $access_token["oauth_token_secret"];
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$u->twitter_user_id = $access_token["user_id"];
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$u->screen_name = $access_token["screen_name"];
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$u->user_id = identity::active_user()->id;
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$u->save();
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message::success(t("Twitter access tokens saved!"));
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}
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/**
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* Post a status update to Twitter
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* @param string $message
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* @todo Update previously failed tweet, if one exists
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*/
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public function tweet($item_id) {
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access::verify_csrf();
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$item = ORM::factory("item", $item_id);
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$form = twitter::get_tweet_form($item);
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if ($form->validate()) {
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$item_url = url::abs_site($item->relative_url_cache);
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$u = $this->_get_twitter_user(identity::active_user()->id);
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$consumer_key = module::get_var("twitter", "consumer_key");
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$consumer_secret = module::get_var("twitter", "consumer_secret");
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require_once(MODPATH . "twitter/lib/twitteroauth.php");
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$connection = new TwitterOAuth(
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$consumer_key,
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$consumer_secret,
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$u->oauth_token,
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$u->oauth_token_secret);
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$message = $form->twitter_message->tweet->value;
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$response = $connection->post('statuses/update', array('status' => $message));
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if (200 == $connection->http_code) {
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$status = 1;
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message::success(t("Tweet sent!"));
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json::reply(array("result" => "success", "location" => $item->url()));
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} else {
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$status = 0;
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log::error("content", "Twitter", "Unable to sent tweet, response code: " . $connection->http_code);
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message::error(t("Unable to send Tweet. Your message has been saved. Please try again later."));
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json::reply(array("result" => "error", "html" => (string)$form));
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}
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$tweet->item_id = $item_id;
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$tweet->twitter_id = $response->id;
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$tweet->tweet = $message;
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$tweet->status = $status;
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$this->save_tweet($tweet);
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$this->_delete_failed($item_id);
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} else {
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json::reply(array("result" => "error", "html" => (string)$form));
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}
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}
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/**
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*
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* @param <type> $tweet
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*/
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function update_tweet($tweet) {
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}
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/**
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* Clear Twitter module session variables
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*/
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private function _clear_session() {
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Session::instance()->delete("twitter_oauth_token");
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Session::instance()->delete("twitter_oauth_token_secret");
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Session::instance()->delete("twitter_access_token");
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}
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/**
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* Delete all failed tweets by the current user for an item
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* @param integer $item_id
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* @todo Not implemented
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*/
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private function _delete_failed($item_id) {
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if (is_numeric($item_id)) {
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$user_id = identity::active_user()->id;
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$result = db::build()
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->delete("twitter_tweets")
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->where("user_id", "=", $user_id)
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->where("item_id", "=", $item_id)
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->where("status", "=", 0)
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->execute();
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}
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}
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/**
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* Get Twitter credentials for the current user.
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* @param int $user_id
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* @return mixed object|false
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*/
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private function _get_twitter_user($user_id) {
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$twitter_user = ORM::factory("twitter_user")->where("user_id", "=", $user_id)->find();
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if ($twitter_user->loaded()) {
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return $twitter_user;
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}
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return false;
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}
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/**
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* Check if current user's Twitter credentials have been stored locally.
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* @param int $user_id
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* @return boolean
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*/
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private function _is_token_set($user_id) {
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$twitter_user = $this->_get_twitter_user($user_id);
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if (!empty($twitter_user->oauth_token) && !empty($twitter_user->oauth_token_secret)) {
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return true;
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}
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return false;
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}
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}
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