GNUsocial/gnu-social
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Move the functionality to a plugin

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Use an associated model to prevent race conditions on creating the
profile object.
This commit is contained in:
Stephen Paul Weber 2015-10-28 00:11:54 +00:00
parent 21979bb7d7
commit fed0895d98
5 changed files with 264 additions and 126 deletions
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42
classes/Profile.php
View File

@ -1520,48 +1520,6 @@ class Profile extends Managed_DataObject
return $profile;
}
/*
* Get or create a profile given a possible URL
*/
static function ensureFromUrl($url, $mf2=null) {
common_debug('Trying to find a profile for ' . $url);
$url = preg_replace('#https?://#', 'https://', $url);
try {
$profile = Profile::fromUri($url);
} catch(UnknownUriException $ex) {}
if(!($profile instanceof Profile)) {
$profile = Profile::getKV('profileurl', $url);
}
$url = str_replace('https://', 'http://', $url);
if(!($profile instanceof Profile)) {
try {
$profile = Profile::fromUri($url);
} catch(UnknownUriException $ex) {}
}
if(!($profile instanceof Profile)) {
$profile = Profile::getKV('profileurl', $url);
}
if(!($profile instanceof Profile)) {
$hcard = common_representative_hcard($url, null, $mf2);
if(!$hcard) return null;
$profile = new Profile();
$profile->profileurl = $hcard['url'][0];
$profile->fullname = $hcard['name'][0];
preg_match_all('/'.Nickname::DISPLAY_FMT.'/', $profile->fullname, $altnick);
$profile->nickname = $hcard['nickname'] ? $hcard['nickname'][0] : implode($altnick[0]);
$profile->created = common_sql_now();
$profile->insert();
}
return $profile;
}
function canRead(Notice $notice)
{
if ($notice->scope & Notice::SITE_SCOPE) {

103
lib/util.php
View File

@ -730,33 +730,24 @@ function common_find_mentions($text, Notice $notice)
$matches = common_find_mentions_raw($text);
foreach ($matches as $match) {
// Try to process it as @URL
$url = $match[0];
if(!common_valid_http_url($url)) { $url = 'http://' . $url; }
if(common_valid_http_url($url)) {
$mentioned = Profile::ensureFromUrl($url);
$text = mb_strlen($mentioned->nickname) <= mb_strlen($match[0]) ? $mentioned->nickname : $match[0];
try {
$nickname = Nickname::normalize($match[0]);
} catch (NicknameException $e) {
// Bogus match? Drop it.
continue;
}
// Try to get a profile for this nickname.
// Start with conversation context, then go to
// sender context.
if ($origAuthor instanceof Profile && $origAuthor->nickname == $nickname) {
$mentioned = $origAuthor;
} else if (!empty($origMentions) &&
array_key_exists($nickname, $origMentions)) {
$mentioned = $origMentions[$nickname];
} else {
try {
$nickname = Nickname::normalize($match[0]);
} catch (NicknameException $e) {
// Bogus match? Drop it.
continue;
}
// Try to get a profile for this nickname.
// Start with conversation context, then go to
// sender context.
if ($origAuthor instanceof Profile && $origAuthor->nickname == $nickname) {
$mentioned = $origAuthor;
} else if (!empty($origMentions) &&
array_key_exists($nickname, $origMentions)) {
$mentioned = $origMentions[$nickname];
} else {
$mentioned = common_relative_profile($sender, $nickname);
}
$text = $match[0];
$mentioned = common_relative_profile($sender, $nickname);
}
if ($mentioned instanceof Profile) {
@ -770,7 +761,7 @@ function common_find_mentions($text, Notice $notice)
$mention = array('mentioned' => array($mentioned),
'type' => 'mention',
'text' => $text,
'text' => $match[0],
'position' => $match[1],
'length' => mb_strlen($match[0]),
'url' => $url);
@ -848,7 +839,7 @@ function common_find_mentions_raw($text)
PREG_OFFSET_CAPTURE);
$atmatches = array();
preg_match_all('/(?:^|\s+)@((?:[A-Za-z0-9_:\-\.\/%]+)|(?:' . Nickname::DISPLAY_FMT . '))\b/',
preg_match_all('/(?:^|\s+)@(' . Nickname::DISPLAY_FMT . ')\b/',
$text,
$atmatches,
PREG_OFFSET_CAPTURE);
@ -2440,62 +2431,6 @@ function common_strip_html($html, $trim=true, $save_whitespace=false)
return $trim ? trim($text) : $text;
}
function common_representative_hcard($url, $fn=null, $mf2=null) {
if(!$mf2) {
$request = HTTPClient::start();
try {
$response = $request->get($url);
} catch(Exception $ex) {
return null;
}
$url = $response->getEffectiveUrl();
$mf2 = new Mf2\Parser($response->getBody(), $url);
$mf2 = $mf2->parse();
}
$hcard = null;
if(!empty($mf2['items'])) {
$hcards = array();
foreach($mf2['items'] as $item) {
if(!in_array('h-card', $item['type'])) {
continue;
}
// We found a match, return it immediately
if(isset($item['properties']['url']) && in_array($url, $item['properties']['url'])) {
$hcard = $item['properties'];
break;
}
// Let's keep all the hcards for later, to return one of them at least
$hcards[] = $item['properties'];
}
// No match immediately for the url we expected, but there were h-cards found
if (count($hcards) > 0) {
$hcard = $hcards[0];
}
}
if(!$hcard && $fn) {
$hcard = array('name' => array($fn));
}
if(!$hcard && $response) {
preg_match('/<title>([^<]+)/', $response->getBody(), $match);
$hcard = array('name' => array($match[1]));
}
if($hcard && !$hcard['url']) {
$hcard['url'] = array($url);
}
return $hcard;
}
function html_sprintf()
{
$args = func_get_args();

70
plugins/MentionURL/MentionURLPlugin.php Normal file
View File

@ -0,0 +1,70 @@
<?php
if (!defined('GNUSOCIAL')) { exit(1); }
require_once __DIR__ . '/lib/util.php';
/*
* This plugin lets you type @twitter.com/singpolyma
* so that you can be specific instead of relying on heuristics.
*/
class MentionURLPlugin extends Plugin
{
public function onStartFindMentions($sender, $text, &$mentions)
{
preg_match_all('/(?:^|\s+)@([A-Za-z0-9_:\-\.\/%]+)\b/',
$text,
$atmatches,
PREG_OFFSET_CAPTURE);
foreach ($atmatches[1] as $match) {
$url = $match[0];
if(!common_valid_http_url($url)) { $url = 'http://' . $url; }
if(common_valid_http_url($url)) {
$mentioned = Mention_url_profile::fromUrl($url);
$text = mb_strlen($mentioned->nickname) <= mb_strlen($match[0]) ? $mentioned->nickname : $match[0];
}
if($mentioned instanceof Profile) {
$mentions[] = array('mentioned' => array($mentioned),
'type' => 'mention',
'text' => $text,
'position' => $match[1],
'length' => mb_strlen($match[0]),
'url' => $mentioned->profileurl);
}
}
return true;
}
public function onStartGetProfileFromURI($uri, &$profile)
{
$mention_profile = Mention_url_profile::getKV('profileurl', $uri);
if($mention_profile instanceof Mention_url_profile) {
$profile = $mention_profile->getProfile();
return !($profile instanceof Profile);
}
return true;
}
public function onCheckSchema()
{
$schema = Schema::get();
$schema->ensureTable('mention_url_profile', Mention_url_profile::schemaDef());
return true;
}
public function onPluginVersion(array &$versions)
{
$versions[] = array('name' => 'MentionURL',
'version' => GNUSOCIAL_VERSION,
'author' => 'Stephen Paul Weber',
'homepage' => 'http://gnu.io/',
'description' =>
// TRANS: Plugin description.
_m('Plugin to allow mentioning arbitrary URLs.'));
return true;
}
}

118
plugins/MentionURL/classes/Mention_url_profile.php Normal file
View File

@ -0,0 +1,118 @@
<?php
/*
* 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/>.
*/
if (!defined('GNUSOCIAL')) { exit(1); }
/**
* Table Definition for mention_url_profile
*/
class Mention_url_profile extends Managed_DataObject
{
public $__table = 'mention_url_profile'; // table name
public $profile_id; // int(4) not_null
public $profileurl; // varchar(191) primary_key not_null not 255 because utf8mb4 takes more space
public static function schemaDef()
{
return array(
'fields' => array(
'profile_id' => array('type' => 'int', 'not null' => true, 'description' => 'matches exactly one profile id'),
'profileurl' => array('type' => 'varchar', 'not null' => true, 'length' => 191, 'description' => 'URL of the profile'),
),
'primary key' => array('profileurl'),
'foreign keys' => array(
'mention_url_profile_profile_id_fkey' => array('profile', array('profile_id' => 'id')),
),
);
}
public static function fromUrl($url, $depth=0) {
common_debug('MentionURL: trying to find a profile for ' . $url);
$url = preg_replace('#https?://#', 'https://', $url);
try {
$profile = Profile::fromUri($url);
} catch(UnknownUriException $ex) {}
if(!($profile instanceof Profile)) {
$profile = self::findProfileByProfileURL($url);
}
$url = str_replace('https://', 'http://', $url);
if(!($profile instanceof Profile)) {
try {
$profile = Profile::fromUri($url);
} catch(UnknownUriException $ex) {}
}
if(!($profile instanceof Profile)) {
$profile = self::findProfileByProfileURL($url);
}
if(!($profile instanceof Profile)) {
$hcard = mention_url_representative_hcard($url);
if(!$hcard) return null;
$mention_profile = new Mention_url_profile();
$mention_profile->query('BEGIN');
$profile = new Profile();
$profile->profileurl = $hcard['url'][0];
$profile->fullname = $hcard['name'][0];
preg_match('/\/([^\/]+)\/*$/', $profile->profileurl, $matches);
if(!$hcard['nickname']) $hcard['nickname'] = array($matches[1]);
$profile->nickname = $hcard['nickname'][0];
$profile->created = common_sql_now();
$mention_profile->profile_id = $profile->insert();
if(!$mention_profile->profile_id) {
$mention_profile->query('ROLLBACK');
return null;
}
$mention_profile->profileurl = $profile->profileurl;
if(!$mention_profile->insert()) {
$mention_profile->query('ROLLBACK');
if($depth > 0) {
return null;
} else {
return self::fromUrl($url, $depth+1);
}
} else {
$mention_profile->query('COMMIT');
}
}
return $profile;
}
protected static function findProfileByProfileURL($url) {
$profile = Profile::getKV('profileurl', $url);
if($profile instanceof Profile) {
$mention_profile = new Mention_url_profile();
$mention_profile->profile_id = $profile->id;
$mention_profile->profileurl = $profile->profileurl;
$mention_profile->insert();
}
return $profile;
}
public function getProfile() {
return Profile::getKV('id', $this->profile_id);
}
}

57
plugins/MentionURL/lib/util.php Normal file
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@ -0,0 +1,57 @@
<?php
function mention_url_representative_hcard($url, $fn=null, $mf2=null) {
if(!$mf2) {
$request = HTTPClient::start();
try {
$response = $request->get($url);
} catch(Exception $ex) {
return null;
}
$url = $response->getEffectiveUrl();
$mf2 = new Mf2\Parser($response->getBody(), $url);
$mf2 = $mf2->parse();
}
$hcard = null;
if(!empty($mf2['items'])) {
$hcards = array();
foreach($mf2['items'] as $item) {
if(!in_array('h-card', $item['type'])) {
continue;
}
// We found a match, return it immediately
if(isset($item['properties']['url']) && in_array($url, $item['properties']['url'])) {
$hcard = $item['properties'];
break;
}
// Let's keep all the hcards for later, to return one of them at least
$hcards[] = $item['properties'];
}
// No match immediately for the url we expected, but there were h-cards found
if (count($hcards) > 0) {
$hcard = $hcards[0];
}
}
if(!$hcard && $fn) {
$hcard = array('name' => array($fn));
}
if(!$hcard && $response) {
preg_match('/<title>([^<]+)/', $response->getBody(), $match);
$hcard = array('name' => array($match[1]));
}
if($hcard && !$hcard['url']) {
$hcard['url'] = array($url);
}
return $hcard;
}