gnu-social/plugins/TwitterBridge/lib/twitterimport.php

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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* 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 Plugin
* @package StatusNet
* @author Zach Copley <zach@status.net>
* @author Julien C <chaumond@gmail.com>
* @author Brion Vibber <brion@status.net>
* @copyright 2009-2010 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET')) {
exit(1);
}
require_once dirname(__DIR__) . '/twitter.php';
/**
* Encapsulation of the Twitter status -> notice incoming bridge import.
* Is used by both the polling twitterstatusfetcher.php daemon, and the
* in-progress streaming import.
*
* @category Plugin
* @package StatusNet
* @author Zach Copley <zach@status.net>
* @author Julien C <chaumond@gmail.com>
* @author Brion Vibber <brion@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
* @link http://twitter.com/
*/
class TwitterImport
{
public $avatarsizename = 'reasonably_small'; // a Twitter size name for 128x128 px
public $avatarsize = 128; // they're square...
public function importStatus($status)
{
// Hacktastic: filter out stuff coming from this StatusNet
$source = mb_strtolower(common_config('integration', 'source'));
if (preg_match("/$source/", mb_strtolower($status->source))) {
common_debug(__METHOD__ . ' - Skipping import of status ' .
twitter_id($status) . " with source {$source}");
return null;
}
// Don't save it if the user is protected
// FIXME: save it but treat it as private
if ($status->user->protected) {
return null;
}
$notice = $this->saveStatus($status);
return $notice;
}
function name()
{
return get_class($this);
}
function saveStatus($status)
{
$profile = $this->ensureProfile($status->user);
if (empty($profile)) {
common_log(LOG_ERR, __METHOD__ . ' - Problem saving notice. No associated Profile.');
return null;
}
$statusId = twitter_id($status);
$statusUri = $this->makeStatusURI($status->user->screen_name, $statusId);
// check to see if we've already imported the status
$n2s = Notice_to_status::getKV('status_id', $statusId);
if (!empty($n2s)) {
common_log(
LOG_INFO,
__METHOD__ . " - Ignoring duplicate import: {$statusId}"
);
return Notice::getKV('id', $n2s->notice_id);
}
// If it's a retweet, save it as a repeat!
if (!empty($status->retweeted_status)) {
common_log(LOG_INFO, "Status {$statusId} is a retweet of " . twitter_id($status->retweeted_status) . ".");
$original = $this->saveStatus($status->retweeted_status);
if (empty($original)) {
return null;
} else {
$author = $original->getProfile();
// TRANS: Message used to repeat a notice. RT is the abbreviation of 'retweet'.
// TRANS: %1$s is the repeated user's name, %2$s is the repeated notice.
$content = sprintf(_m('RT @%1$s %2$s'),
$author->nickname,
$original->content);
if (Notice::contentTooLong($content)) {
$contentlimit = Notice::maxContent();
$content = mb_substr($content, 0, $contentlimit - 4) . ' ...';
}
$repeat = Notice::saveNew($profile->id,
$content,
'twitter',
array('repeat_of' => $original->id,
'uri' => $statusUri,
'is_local' => Notice::GATEWAY));
common_log(LOG_INFO, "Saved {$repeat->id} as a repeat of {$original->id}");
Notice_to_status::saveNew($repeat->id, $statusId);
return $repeat;
}
}
$notice = new Notice();
$notice->profile_id = $profile->id;
$notice->uri = $statusUri;
$notice->url = $statusUri;
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$notice->verb = ActivityVerb::POST;
$notice->created = strftime(
'%Y-%m-%d %H:%M:%S',
strtotime($status->created_at)
);
$notice->source = 'twitter';
$notice->reply_to = null;
$replyTo = twitter_id($status, 'in_reply_to_status_id');
if (!empty($replyTo)) {
common_log(LOG_INFO, "Status {$statusId} is a reply to status {$replyTo}");
$n2s = Notice_to_status::getKV('status_id', $replyTo);
if (empty($n2s)) {
common_log(LOG_INFO, "Couldn't find local notice for status {$replyTo}");
} else {
$reply = Notice::getKV('id', $n2s->notice_id);
if (empty($reply)) {
common_log(LOG_INFO, "Couldn't find local notice for status {$replyTo}");
} else {
common_log(LOG_INFO, "Found local notice {$reply->id} for status {$replyTo}");
$notice->reply_to = $reply->id;
$notice->conversation = $reply->conversation;
}
}
}
$notice->is_local = Notice::GATEWAY;
$notice->content = html_entity_decode($this->linkify($status, FALSE), ENT_QUOTES, 'UTF-8');
$notice->rendered = $this->linkify($status, TRUE);
if (Event::handle('StartNoticeSave', array(&$notice))) {
$id = $notice->insert();
if ($id === false) {
common_log_db_error($notice, 'INSERT', __FILE__);
common_log(LOG_ERR, __METHOD__ . ' - Problem saving notice.');
}
if (empty($notice->conversation)) {
$orig = clone($notice);
$conv = Conversation::create($notice);
common_log(LOG_INFO, "No known conversation for status {$statusId} so a new one ({$conv->id}) was created.");
$notice->conversation = $conv->id;
$notice->update($orig);
}
Event::handle('EndNoticeSave', array($notice));
}
Notice_to_status::saveNew($notice->id, $statusId);
$this->saveStatusMentions($notice, $status);
$this->saveStatusAttachments($notice, $status);
$notice->blowOnInsert();
return $notice;
}
/**
* Make an URI for a status.
*
* @param object $status status object
*
* @return string URI
*/
function makeStatusURI($username, $id)
{
return 'http://twitter.com/#!/'
. $username
. '/status/'
. $id;
}
/**
* Look up a Profile by profileurl field. Profile::getKV() was
* not working consistently.
*
* @param string $nickname local nickname of the Twitter user
* @param string $profileurl the profile url
*
* @return mixed value the first Profile with that url, or null
*/
protected function getProfileByUrl($nickname, $profileurl)
{
$profile = new Profile();
$profile->nickname = $nickname;
$profile->profileurl = $profileurl;
$profile->limit(1);
if (!$profile->find(true)) {
throw new NoResultException($profile);
}
return $profile;
}
protected function ensureProfile($twuser)
{
// check to see if there's already a profile for this user
$profileurl = 'http://twitter.com/' . $twuser->screen_name;
try {
$profile = $this->getProfileByUrl($twuser->screen_name, $profileurl);
$this->updateAvatar($twuser, $profile);
return $profile;
} catch (NoResultException $e) {
common_debug(__METHOD__ . ' - Adding profile and remote profile ' .
"for Twitter user: $profileurl.");
}
$profile = new Profile();
$profile->query("BEGIN");
$profile->nickname = $twuser->screen_name;
$profile->fullname = $twuser->name;
$profile->homepage = $twuser->url;
$profile->bio = $twuser->description;
$profile->location = $twuser->location;
$profile->profileurl = $profileurl;
$profile->created = common_sql_now();
try {
$id = $profile->insert(); // insert _should_ throw exception on failure
if (empty($id)) {
throw new Exception('Failed insert');
}
} catch(Exception $e) {
common_log(LOG_WARNING, __METHOD__ . " Couldn't insert profile: " . $e->getMessage());
common_log_db_error($profile, 'INSERT', __FILE__);
$profile->query("ROLLBACK");
return false;
}
$profile->query("COMMIT");
$this->updateAvatar($twuser, $profile);
return $profile;
}
/*
* Checks whether we have to update the profile's avatar
*
* @return true when updated, false on failure, null when no action taken
*/
protected function updateAvatar($twuser, Profile $profile)
{
$path_parts = pathinfo($twuser->profile_image_url);
$ext = isset($path_parts['extension'])
? '.'.$path_parts['extension']
: ''; // some lack extension
$img_root = basename($path_parts['basename'], '_normal'.$ext); // cut off extension
$filename = "Twitter_{$twuser->id}_{$img_root}_{$this->avatarsizename}{$ext}";
try {
$avatar = Avatar::getUploaded($profile);
if ($avatar->filename === $filename) {
return null;
}
common_debug(__METHOD__ . " - Updating profile avatar (profile_id={$profile->id}) " .
"from {$avatar->filename} to {$filename}");
// else we continue with creating a new avatar
} catch (NoAvatarException $e) {
// Avatar was not found. We can catch NoAvatarException or FileNotFoundException
// but generally we just want to continue creating a new avatar.
common_debug(__METHOD__ . " - No avatar found for (profile_id={$profile->id})");
}
$url = "{$path_parts['dirname']}/{$img_root}_{$this->avatarsizename}{$ext}";
$mediatype = $this->getMediatype(mb_substr($ext, 1));
try {
$this->newAvatar($profile, $url, $filename, $mediatype);
} catch (Exception $e) {
if (file_exists(Avatar::path($filename))) {
unlink(Avatar::path($filename));
}
return false;
}
return true;
}
protected function getMediatype($ext)
{
$mediatype = null;
switch (strtolower($ext)) {
case 'jpeg':
case 'jpg':
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$mediatype = 'image/jpeg';
break;
case 'gif':
$mediatype = 'image/gif';
break;
default:
$mediatype = 'image/png';
}
return $mediatype;
}
protected function newAvatar(Profile $profile, $url, $filename, $mediatype)
{
// Clear out old avatars, won't do anything if there are none
Avatar::deleteFromProfile($profile);
// throws exception if unable to fetch
$this->fetchRemoteUrl($url, Avatar::path($filename));
$avatar = new Avatar();
$avatar->profile_id = $profile->id;
$avatar->original = 1; // this is an original/"uploaded" avatar
$avatar->mediatype = $mediatype;
$avatar->filename = $filename;
$avatar->url = Avatar::url($filename);
$avatar->width = $this->avatarsize;
$avatar->height = $this->avatarsize;
$avatar->created = common_sql_now();
$id = $avatar->insert();
if (empty($id)) {
common_log(LOG_WARNING, __METHOD__ . " Couldn't insert avatar - " . $e->getMessage());
common_log_db_error($avatar, 'INSERT', __FILE__);
throw new ServerException('Could not insert avatar');
}
common_debug(__METHOD__ . " - Saved new avatar for {$profile->id}.");
return $avatar;
}
/**
* Fetch a remote avatar image and save to local storage.
*
* @param string $url avatar source URL
* @param string $filename bare local filename for download
* @return bool true on success, false on failure
*/
protected function fetchRemoteUrl($url, $filename)
{
common_debug(__METHOD__ . " - Fetching Twitter avatar: {$url} to {$filename}");
$request = HTTPClient::start();
$request->setConfig('connect_timeout', 3); // I had problems with throttling
$request->setConfig('timeout', 6); // and locking the process sucks.
$response = $request->get($url);
if ($response->isOk()) {
if (!file_put_contents($filename, $response->getBody())) {
throw new ServerException('Failed saving fetched file');
}
} else {
throw new Exception('Unexpected HTTP status code');
}
return true;
}
const URL = 1;
const HASHTAG = 2;
const MENTION = 3;
function linkify($status, $html = FALSE)
{
$text = $status->text;
if (empty($status->entities)) {
$statusId = twitter_id($status);
common_log(LOG_WARNING, "No entities data for {$statusId}; trying to fake up links ourselves.");
$text = common_replace_urls_callback($text, 'common_linkify');
$text = preg_replace_callback('/(^|\&quot\;|\'|\(|\[|\{|\s+)#([\pL\pN_\-\.]{1,64})/',
function ($m) { return $m[1].'#'.TwitterStatusFetcher::tagLink($m[2]); }, $text);
$text = preg_replace_callback('/(^|\s+)@([a-z0-9A-Z_]{1,64})/',
function ($m) { return $m[1].'@'.TwitterStatusFetcher::atLink($m[2]); }, $text);
return $text;
}
// Move all the entities into order so we can
// replace them and escape surrounding plaintext
// in order
$toReplace = array();
if (!empty($status->entities->urls)) {
foreach ($status->entities->urls as $url) {
$toReplace[$url->indices[0]] = array(self::URL, $url);
}
}
if (!empty($status->entities->hashtags)) {
foreach ($status->entities->hashtags as $hashtag) {
$toReplace[$hashtag->indices[0]] = array(self::HASHTAG, $hashtag);
}
}
if (!empty($status->entities->user_mentions)) {
foreach ($status->entities->user_mentions as $mention) {
$toReplace[$mention->indices[0]] = array(self::MENTION, $mention);
}
}
// sort in forward order by key
ksort($toReplace);
$result = '';
$cursor = 0;
foreach ($toReplace as $part) {
list($type, $object) = $part;
$start = $object->indices[0];
$end = $object->indices[1];
if ($cursor < $start) {
// Copy in the preceding plaintext
$result .= $this->twitEscape(mb_substr($text, $cursor, $start - $cursor));
$cursor = $start;
}
$orig = $this->twitEscape(mb_substr($text, $start, $end - $start));
switch($type) {
case self::URL:
$linkText = $this->makeUrlLink($object, $orig, $html);
break;
case self::HASHTAG:
if ($html) {
$linkText = $this->makeHashtagLink($object, $orig);
}else{
$linkText = $orig;
}
break;
case self::MENTION:
if ($html) {
$linkText = $this->makeMentionLink($object, $orig);
}else{
$linkText = $orig;
}
break;
default:
$linkText = $orig;
continue;
}
$result .= $linkText;
$cursor = $end;
}
$last = $this->twitEscape(mb_substr($text, $cursor));
$result .= $last;
return $result;
}
function twitEscape($str)
{
// Twitter seems to preemptive turn < and > into &lt; and &gt;
// but doesn't for &, so while you may have some magic protection
// against XSS by not bothing to escape manually, you still get
// invalid XHTML. Thanks!
//
// Looks like their web interface pretty much sends anything
// through intact, so.... to do equivalent, decode all entities
// and then re-encode the special ones.
return htmlspecialchars(html_entity_decode($str, ENT_COMPAT, 'UTF-8'));
}
function makeUrlLink($object, $orig, $html)
{
if ($html) {
return '<a href="'.htmlspecialchars($object->expanded_url).'" class="extlink">'.htmlspecialchars($object->display_url).'</a>';
}else{
return htmlspecialchars($object->expanded_url);
}
}
function makeHashtagLink($object, $orig)
{
return "#" . self::tagLink($object->text, substr($orig, 1));
}
function makeMentionLink($object, $orig)
{
return "@".self::atLink($object->screen_name, $object->name, substr($orig, 1));
}
static function tagLink($tag, $orig)
{
return "<a href='https://twitter.com/search?q=%23{$tag}' class='hashtag'>{$orig}</a>";
}
static function atLink($screenName, $fullName, $orig)
{
if (!empty($fullName)) {
return "<a href='http://twitter.com/#!/{$screenName}' title='{$fullName}'>{$orig}</a>";
} else {
return "<a href='http://twitter.com/#!/{$screenName}'>{$orig}</a>";
}
}
function saveStatusMentions($notice, $status)
{
$mentions = array();
if (empty($status->entities) || empty($status->entities->user_mentions)) {
return;
}
foreach ($status->entities->user_mentions as $mention) {
try {
$flink = Foreign_link::getByForeignID($mention->id, TWITTER_SERVICE);
$user = $flink->getUser();
$reply = new Reply();
$reply->notice_id = $notice->id;
$reply->profile_id = $user->id;
$reply->modified = $notice->created;
common_log(LOG_INFO, __METHOD__ . ": saving reply: notice {$notice->id} to profile {$user->id}");
$id = $reply->insert();
} catch (NoResultException $e) {
common_log(LOG_WARNING, 'No local user found for Foreign_link with local User id: '.$flink->user_id);
}
}
}
/**
* Record URL links from the notice. Needed to get thumbnail records
* for referenced photo and video posts, etc.
*
* @param Notice $notice
* @param object $status
*/
function saveStatusAttachments(Notice $notice, $status)
{
if (common_config('attachments', 'process_links')) {
if (!empty($status->entities) && !empty($status->entities->urls)) {
foreach ($status->entities->urls as $url) {
try {
File::processNew($url->url, $notice);
} catch (ServerException $e) {
// Could not process attached URL
}
}
}
}
}
}