gnu-social/actions/twittersettings.php

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<?php
/**
* Laconica, the distributed open-source microblogging tool
*
* Settings for Twitter integration
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Settings
* @package Laconica
* @author Evan Prodromou <evan@controlyourself.ca>
* @copyright 2008-2009 Control Yourself, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://laconi.ca/
*/
if (!defined('LACONICA')) {
exit(1);
}
require_once INSTALLDIR.'/lib/connectsettingsaction.php';
define('SUBSCRIPTIONS', 80);
/**
* Settings for Twitter integration
*
* @category Settings
* @package Laconica
* @author Evan Prodromou <evan@controlyourself.ca>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://laconi.ca/
*
* @see SettingsAction
*/
class TwittersettingsAction extends ConnectSettingsAction
{
/**
* Title of the page
*
* @return string Title of the page
*/
function title()
{
return _('Twitter settings');
}
/**
* Instructions for use
*
* @return instructions for use
*/
function getInstructions()
{
return _('Add your Twitter account to automatically send '.
' your notices to Twitter, ' .
'and subscribe to Twitter friends already here.');
}
/**
* Content area of the page
*
* Shows a form for associating a Twitter account with this
* Laconica account. Also lets the user set preferences.
*
* @return void
*/
function showContent()
{
$user = common_current_user();
$profile = $user->getProfile();
$fuser = null;
$flink = Foreign_link::getByUserID($user->id, 1); // 1 == Twitter
if ($flink) {
$fuser = $flink->getForeignUser();
}
$this->elementStart('form', array('method' => 'post',
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'id' => 'form_settings_twitter',
'class' => 'form_settings',
'action' =>
common_local_url('twittersettings')));
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$this->elementStart('fieldset', array('id' => 'settings_twitter_account'));
$this->element('legend', null, _('Twitter Account'));
$this->hidden('token', common_session_token());
if ($fuser) {
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$this->elementStart('ul', 'form_data');
$this->elementStart('li', array('id' => 'settings_twitter_remove'));
$this->element('span', 'twitter_user', $fuser->nickname);
$this->element('a', array('href' => $fuser->uri), $fuser->uri);
$this->element('p', 'form_note',
_('Current verified Twitter account.'));
$this->hidden('flink_foreign_id', $flink->foreign_id);
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$this->elementEnd('li');
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$this->elementEnd('ul');
$this->submit('remove', _('Remove'));
} else {
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$this->elementStart('ul', 'form_data');
$this->elementStart('li', array('id' => 'settings_twitter_login'));
$this->input('twitter_username', _('Twitter user name'),
($this->arg('twitter_username')) ?
$this->arg('twitter_username') :
$profile->nickname,
_('No spaces, please.')); // hey, it's what Twitter says
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$this->elementEnd('li');
$this->elementStart('li');
$this->password('twitter_password', _('Twitter password'));
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$this->elementend('li');
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$this->elementEnd('ul');
}
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$this->elementEnd('fieldset');
$this->elementStart('fieldset',
array('id' => 'settings_twitter_preferences'));
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$this->element('legend', null, _('Preferences'));
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$this->elementStart('ul', 'form_data');
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$this->elementStart('li');
$this->checkbox('noticesync',
_('Automatically send my notices to Twitter.'),
($flink) ?
($flink->noticesync & FOREIGN_NOTICE_SEND) :
true);
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$this->elementEnd('li');
$this->elementStart('li');
$this->checkbox('replysync',
_('Send local "@" replies to Twitter.'),
($flink) ?
($flink->noticesync & FOREIGN_NOTICE_SEND_REPLY) :
true);
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$this->elementEnd('li');
$this->elementStart('li');
$this->checkbox('friendsync',
_('Subscribe to my Twitter friends here.'),
($flink) ?
($flink->friendsync & FOREIGN_FRIEND_RECV) :
false);
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$this->elementEnd('li');
$this->elementEnd('ul');
if ($flink) {
$this->submit('save', _('Save'));
} else {
$this->submit('add', _('Add'));
}
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$this->elementEnd('fieldset');
$this->showTwitterSubscriptions();
$this->elementEnd('form');
}
/**
* Gets some of the user's Twitter friends
*
* Gets the number of Twitter friends that are on this
* instance of Laconica.
*
* @return array array of User objects
*/
function subscribedTwitterUsers()
{
$current_user = common_current_user();
$qry = 'SELECT user.* ' .
'FROM subscription ' .
'JOIN user ON subscription.subscribed = user.id ' .
'JOIN foreign_link ON foreign_link.user_id = user.id ' .
'WHERE subscriber = %d ' .
'ORDER BY user.nickname';
$user = new User();
$user->query(sprintf($qry, $current_user->id));
$users = array();
while ($user->fetch()) {
// Don't include the user's own self-subscription
if ($user->id != $current_user->id) {
$users[] = clone($user);
}
}
return $users;
}
/**
* Show user's Twitter friends
*
* Gets the number of Twitter friends that are on this
* instance of Laconica, and shows their mini-avatars.
*
* @return void
*/
function showTwitterSubscriptions()
{
$friends = $this->subscribedTwitterUsers();
$friends_count = count($friends);
if ($friends_count > 0) {
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$this->elementStart('div', array('id' => 'entity_subscriptions',
'class' => 'section'));
$this->element('h2', null, _('Twitter Friends'));
$this->elementStart('ul', 'entities users xoxo');
for ($i = 0; $i < min($friends_count, SUBSCRIPTIONS); $i++) {
$other = Profile::staticGet($friends[$i]->id);
if (!$other) {
common_log_db_error($subs, 'SELECT', __FILE__);
continue;
}
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$this->elementStart('li', 'vcard');
$this->elementStart('a', array('title' => ($other->fullname) ?
$other->fullname :
$other->nickname,
'href' => $other->profileurl,
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'class' => 'url'));
$avatar = $other->getAvatar(AVATAR_MINI_SIZE);
$avatar_url = ($avatar) ?
$avatar->displayUrl() :
Avatar::defaultImage(AVATAR_MINI_SIZE);
$this->element('img', array('src' => $avatar_url,
'width' => AVATAR_MINI_SIZE,
'height' => AVATAR_MINI_SIZE,
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'class' => 'avatar photo',
'alt' => ($other->fullname) ?
$other->fullname :
$other->nickname));
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$this->element('span', 'fn nickname', $other->nickname);
$this->elementEnd('a');
$this->elementEnd('li');
}
$this->elementEnd('ul');
$this->elementEnd('div');
}
}
/**
* Handle posts to this form
*
* Based on the button that was pressed, muxes out to other functions
* to do the actual task requested.
*
* All sub-functions reload the form with a message -- success or failure.
*
* @return void
*/
function handlePost()
{
// CSRF protection
$token = $this->trimmed('token');
if (!$token || $token != common_session_token()) {
$this->showForm(_('There was a problem with your session token. '.
'Try again, please.'));
return;
}
if ($this->arg('save')) {
$this->savePreferences();
} else if ($this->arg('add')) {
$this->addTwitterAccount();
} else if ($this->arg('remove')) {
$this->removeTwitterAccount();
} else {
$this->showForm(_('Unexpected form submission.'));
}
}
/**
* Associate a Twitter account with the user's account
*
* Validates post input; verifies it against Twitter; and if
* successful stores in the database.
*
* @return void
*/
function addTwitterAccount()
{
$screen_name = $this->trimmed('twitter_username');
$password = $this->trimmed('twitter_password');
$noticesync = $this->boolean('noticesync');
$replysync = $this->boolean('replysync');
$friendsync = $this->boolean('friendsync');
if (!Validate::string($screen_name,
array('min_length' => 1,
'max_length' => 15,
'format' => VALIDATE_NUM.VALIDATE_ALPHA.'_'))) {
$this->showForm(_('Username must have only numbers, '.
'upper- and lowercase letters, '.
'and underscore (_). 15 chars max.'));
return;
}
if (!$this->verifyCredentials($screen_name, $password)) {
$this->showForm(_('Could not verify your Twitter credentials!'));
return;
}
$twit_user = twitter_user_info($screen_name, $password);
if (!$twit_user) {
$this->showForm(sprintf(_('Unable to retrieve account information '.
'For "%s" from Twitter.'),
$screen_name));
return;
}
if (!save_twitter_user($twit_user->id, $screen_name)) {
$this->showForm(_('Unable to save your Twitter settings!'));
return;
}
$user = common_current_user();
$flink = new Foreign_link();
$flink->user_id = $user->id;
$flink->foreign_id = $twit_user->id;
$flink->service = 1; // Twitter
$flink->credentials = $password;
$flink->created = common_sql_now();
$flink->set_flags($noticesync, $replysync, $friendsync);
$flink_id = $flink->insert();
if (!$flink_id) {
common_log_db_error($flink, 'INSERT', __FILE__);
$this->showForm(_('Unable to save your Twitter settings!'));
return;
}
if ($friendsync) {
save_twitter_friends($user, $twit_user->id, $screen_name, $password);
}
$this->showForm(_('Twitter settings saved.'), true);
}
/**
* Disassociate an existing Twitter account from this account
*
* @return void
*/
function removeTwitterAccount()
{
$user = common_current_user();
$flink = Foreign_link::getByUserID($user->id, 1);
$flink_foreign_id = $this->arg('flink_foreign_id');
// Maybe an old tab open...?
if ($flink->foreign_id != $flink_foreign_id) {
$this->showForm(_('That is not your Twitter account.'));
return;
}
$result = $flink->delete();
if (!$result) {
common_log_db_error($flink, 'DELETE', __FILE__);
$this->serverError(_('Couldn\'t remove Twitter user.'));
return;
}
$this->showForm(_('Twitter account removed.'), true);
}
/**
* Save user's Twitter-bridging preferences
*
* @return void
*/
function savePreferences()
{
$noticesync = $this->boolean('noticesync');
$friendsync = $this->boolean('friendsync');
$replysync = $this->boolean('replysync');
$user = common_current_user();
$flink = Foreign_link::getByUserID($user->id, 1);
if (!$flink) {
common_log_db_error($flink, 'SELECT', __FILE__);
$this->showForm(_('Couldn\'t save Twitter preferences.'));
return;
}
$twitter_id = $flink->foreign_id;
$password = $flink->credentials;
$fuser = $flink->getForeignUser();
if (!$fuser) {
common_log_db_error($fuser, 'SELECT', __FILE__);
$this->showForm(_('Couldn\'t save Twitter preferences.'));
return;
}
$screen_name = $fuser->nickname;
$original = clone($flink);
$flink->set_flags($noticesync, $replysync, $friendsync);
$result = $flink->update($original);
if ($result === false) {
common_log_db_error($flink, 'UPDATE', __FILE__);
$this->showForm(_('Couldn\'t save Twitter preferences.'));
return;
}
if ($friendsync) {
save_twitter_friends($user, $flink->foreign_id, $screen_name, $password);
}
$this->showForm(_('Twitter preferences saved.'), true);
}
/**
* Verifies a username and password against Twitter's API
*
* @param string $screen_name Twitter user name
* @param string $password Twitter password
*
* @return boolean success flag
*/
function verifyCredentials($screen_name, $password)
{
$uri = 'http://twitter.com/account/verify_credentials.json';
$data = get_twitter_data($uri, $screen_name, $password);
if (!$data) {
return false;
}
$user = json_decode($data);
if (!$user) {
return false;
}
$twitter_id = $user->id;
if ($twitter_id) {
return $twitter_id;
}
return false;
}
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}