220 lines
11 KiB
PHP
220 lines
11 KiB
PHP
<?php
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/* Twitter Plugin for Friendika
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*
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* Author: Tobias Diekershoff
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* tobias.diekershoff@gmx.net
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*
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* License:3-clause BSD license (same as Friendika)
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*
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* Configuration:
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* To use this plugin you need a OAuth Consumer key pair (key & secret)
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* you can get it from Twitter at https://twitter.com/apps
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*
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* Register your Friendika site as "Client" application with "Read & Write" access
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* we do not need "Twitter as login". When you've registered the app you get the
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* OAuth Consumer key and secret pair for your application/site.
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*
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* Add this key pair to your global .htconfig.php
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*
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* $a->config['twitter']['consumerkey'] = 'your consumer_key here';
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* $a->config['twitter']['consumersecret'] = 'your consumer_secret here';
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*
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* To activate the plugin itself add it to the $a->config['system']['addon']
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* setting. After this, your user can configure their Twitter account settings
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* from "Settings -> Plugin Settings".
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*
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* Requirements: PHP5, curl [Slinky library]
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*
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* Documentation: http://diekershoff.homeunix.net/redmine/wiki/friendikaplugin/Twitter_Plugin
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*/
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/* __TODO__
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*
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* - deletion of the OAuth credentials does not work
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* - what about multimedia content?
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* so far we just strip HTML tags from the message
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* - after entering the PIN reload page propperly
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*/
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function twitter_install() {
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// we need some hooks, for the configuration and for sending tweets
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register_hook('plugin_settings', 'addon/twitter/twitter.php', 'twitter_settings');
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register_hook('plugin_settings_post', 'addon/twitter/twitter.php', 'twitter_settings_post');
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register_hook('post_local_end', 'addon/twitter/twitter.php', 'twitter_post_hook');
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logger("installed twitter");
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}
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function twitter_uninstall() {
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unregister_hook('plugin_settings', 'addon/twitter/twitter.php', 'twitter_settings');
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unregister_hook('plugin_settings_post', 'addon/twitter/twitter.php', 'twitter_settings_post');
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unregister_hook('post_local_end', 'addon/twitter/twitter.php', 'twitter_post_hook');
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}
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function twitter_settings_post ($a,$post) {
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if(! local_user())
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return;
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if (isset($_POST['twitter-disconnect'])) {
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/***
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* if the twitter-disconnect checkbox is set, clear the OAuth key/secret pair
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* from the user configuration
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* TODO this does not work that way!?
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* TODO can we revoke the access tokens at Twitter and do we need to do so?
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*/
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del_pconfig( local_user(), 'twitter', 'consumerkey' );
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del_pconfig( local_user(), 'twitter', 'consumersecret' );
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del_pconfig( local_user(), 'twitter', 'post' );
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} else {
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if (isset($_POST['twitter-pin'])) {
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// if the user supplied us with a PIN from Twitter, let the magic of OAuth happen
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logger('got a Twitter PIN');
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require_once('addon/twitter/twitteroauth.php');
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$ckey = get_config('twitter', 'consumerkey' );
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$csecret = get_config('twitter', 'consumersecret' );
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// the token and secret for which the PIN was generated were hidden in the settings
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// form as token and token2, we need a new connection to Twitter using these token
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// and secret to request a Access Token with the PIN
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$connection = new TwitterOAuth($ckey, $csecret, $_POST['twitter-token'], $_POST['twitter-token2']);
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$token = $connection->getAccessToken( $_POST['twitter-pin'] );
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// ok, now that we have the Access Token, save them in the user config
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set_pconfig(local_user(),'twitter', 'oauthtoken', $token['oauth_token']);
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set_pconfig(local_user(),'twitter', 'oauthsecret', $token['oauth_token_secret']);
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set_pconfig(local_user(),'twitter', 'post', 1);
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// reload the Addon Settings page, if we don't do it see Bug #42
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header('Location: '.$a->get_baseurl().'/settings/addon');
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} else {
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// if no PIN is supplied in the POST variables, the user has changed the setting
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// to post a tweet for every new __public__ posting to the wall
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set_pconfig(local_user(),'twitter','post',intval($_POST['twitter']));
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}}
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}
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function twitter_settings(&$a,&$s) {
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if(! local_user())
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return;
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$a->page['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="' . $a->get_baseurl() . '/addon/twitter/twitter.css' . '" media="all" />' . "\r\n";
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/***
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* 1) Check that we have global consumer key & secret
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* 2) If no OAuthtoken & stuff is present, generate button to get some
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* 3) Checkbox for "Send public notices (140 chars only)
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*/
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$ckey = get_config('twitter', 'consumerkey' );
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$csecret = get_config('twitter', 'consumersecret' );
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$otoken = get_pconfig(local_user(), 'twitter', 'oauthtoken' );
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$osecret = get_pconfig(local_user(), 'twitter', 'oauthsecret' );
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$enabled = get_pconfig(local_user(), 'twitter', 'post');
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$checked = (($enabled) ? ' checked="checked" ' : '');
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$s .= '<h3>'.t('Twitter Posting Settings').'</h3>';
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if ( (!$ckey) && (!$csecret) ) {
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/***
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* no global consumer keys
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* display warning and skip personal config
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*/
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$s .= '<p>'.t('No consumer key pair for Twitter found. Please contact your site administrator.').'</p>';
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} else {
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/***
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* ok we have a consumer key pair now look into the OAuth stuff
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*/
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if ( (!$otoken) && (!$osecret) ) {
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/***
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* the user has not yet connected the account to twitter...
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* get a temporary OAuth key/secret pair and display a button with
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* which the user can request a PIN to connect the account to a
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* account at Twitter.
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*/
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require_once('addon/twitter/twitteroauth.php');
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$connection = new TwitterOAuth($ckey, $csecret);
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$request_token = $connection->getRequestToken();
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$token = $request_token['oauth_token'];
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/***
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* make some nice form
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*/
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$s .= '<p>'.t('At this Friendika instance the Twitter plugin was enabled but you have not yet connected your account to your Twitter account. To do so click the button below to get a PIN from Twitter which you have to copy into the input box below and submit the form. Only your <strong>public</strong> posts will be posted to Twitter.').'</p>';
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$s .= '<a href="'.$connection->getAuthorizeURL($token).'" target="_twitter"><img src="addon/twitter/lighter.png" alt="'.t('Log in with Twitter').'></a>';
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$s .= '<div id="twitter-pin-wrapper">';
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$s .= '<label id="twitter-pin-label" for="twitter-pin">'.t('Copy the PIN from Twitter here').'</label>';
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$s .= '<input id="twitter-pin" type="text" name="twitter-pin" />';
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$s .= '<input id="twitter-token" type="hidden" name="twitter-token" value="'.$token.'" />';
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$s .= '<input id="twitter-token2" type="hidden" name="twitter-token2" value="'.$request_token['oauth_token_secret'].'" />';
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$s .= '</div><div class="clear"></div>';
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$s .= '<div class="settings-submit-wrapper" ><input type="submit" name="submit" class="settings-submit" value="' . t('Submit') . '" /></div>';
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} else {
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/***
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* we have an OAuth key / secret pair for the user
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* so let's give a chance to disable the postings to Twitter
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*/
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require_once('addon/twitter/twitteroauth.php');
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$connection = new TwitterOAuth($ckey,$csecret,$otoken,$osecret);
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$details = $connection->get('account/verify_credentials');
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$s .= '<div id="twitter-info" ><img id="twitter-avatar" src="'.$details->profile_image_url.'" /><p id="twitter-info-block">'.t('Currently connected to: ').'<a href="https://twitter.com/'.$details->screen_name.'" target="_twitter">'.$details->screen_name.'</a><br /><em>'.$details->description.'</em></p></div>';
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$s .= '<p>'.t('If enabled all your <strong>public</strong> postings will be posted to the associated Twitter account as well.').'</p>';
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$s .= '<div id="twitter-enable-wrapper">';
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$s .= '<label id="twitter-enable-label" for="twitter-checkbox">'.t('Send public postings to Twitter').'</label>';
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$s .= '<input id="twitter-checkbox" type="checkbox" name="twitter" value="1" ' . $checked . '/>';
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$s .= '</div><div class="clear"></div>';
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$s .= '<div id="twitter-disconnect-wrapper">';
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$s .= '<label id="twitter-disconnect-label" for="twitter-disconnect">'.t('Clear OAuth configuration').'</label>';
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$s .= '<input id="twitter-disconnect" type="checkbox" name="twitter-disconnect" value="1" />';
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$s .= '</div><div class="clear"></div>';
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$s .= '<div class="settings-submit-wrapper" ><input type="submit" name="submit" class="settings-submit" value="' . t('Submit') . '" /></div>';
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}
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}
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$s .= '</div><div class="clear"></div>';
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}
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function twitter_post_hook(&$a,&$b) {
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/**
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* Post to Twitter
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*/
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logger('twitter post invoked');
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if((local_user()) && (local_user() == $b['uid']) && (! $b['private'])) {
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load_pconfig(local_user(), 'twitter');
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$ckey = get_config('twitter', 'consumerkey' );
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$csecret = get_config('twitter', 'consumersecret' );
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$otoken = get_pconfig(local_user(), 'twitter', 'oauthtoken' );
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$osecret = get_pconfig(local_user(), 'twitter', 'oauthsecret' );
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if($ckey && $csecret && $otoken && $osecret) {
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$twitter_post = get_pconfig(local_user(),'twitter','post');
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if($twitter_post) {
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require_once('addon/twitter/twitteroauth.php');
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require_once('include/bbcode.php');
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$tweet = new TwitterOAuth($ckey,$csecret,$otoken,$osecret);
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$max_char = 140; // max. length for a tweet
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$msg = strip_tags(bbcode($b['body']));
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if ( strlen($msg) > $max_char) {
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$shortlink = "";
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require_once('addon/twitter/slinky.php');
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// post url = base url + /display/ + owner + post id
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// we construct this from the Owner link and replace
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// profile by display - this will cause an error when
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// /profile/ is in the owner url twice but I don't
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// think this will be very common...
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$posturl = str_replace('/profile/','/display/',$b['owner-link']).'/'.$b['id'];
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$slinky = new Slinky( $posturl );
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// setup a cascade of shortening services
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// try to get a short link from these services
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// in the order ur1.ca, trim, id.gd, tinyurl
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$slinky->set_cascade( array( new Slinky_UR1ca(), new Slinky_Trim(), new Slinky_IsGd(), new Slinky_TinyURL() ) );
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$shortlink = $slinky->short();
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// the new message will be shortened such that "... $shortlink"
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// will fit into the character limit
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$msg = substr($msg, 0, $max_char-strlen($shortlink)-4);
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$msg .= '... ' . $shortlink;
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}
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// and now tweet it :-)
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$tweet->post('statuses/update', array('status' => $msg));
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}
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}
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}
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}
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