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<?php
// Source: http://www.php.net/manual/de/function.curl-setopt.php#102121
// This works around a safe_mode/open_basedir restriction
function curl_exec_follow(/*resource*/ $ch, /*int*/ &$maxredirect = null) {
$mr = $maxredirect === null ? 5 : intval($maxredirect);
if (ini_get('open_basedir') == '' && ini_get('safe_mode' == 'Off')) {
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, $mr > 0);
curl_setopt($ch, CURLOPT_MAXREDIRS, $mr);
} else {
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
if ($mr > 0) {
$newurl = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);
$rch = curl_copy_handle($ch);
curl_setopt($rch, CURLOPT_HEADER, true);
curl_setopt($rch, CURLOPT_NOBODY, true);
curl_setopt($rch, CURLOPT_FORBID_REUSE, false);
curl_setopt($rch, CURLOPT_RETURNTRANSFER, true);
do {
curl_setopt($rch, CURLOPT_URL, $newurl);
$header = curl_exec($rch);
if (curl_errno($rch)) {
$code = 0;
} else {
$code = curl_getinfo($rch, CURLINFO_HTTP_CODE);
if ($code == 301 || $code == 302) {
preg_match('/Location:(.*?)\n/', $header, $matches);
$newurl = trim(array_pop($matches));
} else {
$code = 0;
}
}
} while ($code && --$mr);
curl_close($rch);
if (!$mr) {
if ($maxredirect === null) {
trigger_error('Too many redirects. When following redirects, libcurl hit the maximum amount.', E_USER_WARNING);
} else {
$maxredirect = 0;
}
return false;
}
curl_setopt($ch, CURLOPT_URL, $newurl);
}
}
return curl_exec($ch);
}
function getURLMetadata($url) {
//allow only http(s) and (s)ftp
$protocols = '/^[hs]{0,1}[tf]{0,1}tp[s]{0,1}\:\/\//i';
//if not (allowed) protocol is given, assume http
if(preg_match($protocols, $url) == 0) {
$url = 'http://' . $url;
}
$metadata['url'] = $url;
if (!function_exists('curl_init')){
return $metadata;
}
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$page = curl_exec_follow($ch);
curl_close($ch);
@preg_match( "/<title>(.*)<\/title>/si", $page, $match );
$metadata['title'] = htmlspecialchars_decode(@$match[1]);
return $metadata;
}
function addBookmark($url, $title, $tags='') {
$CONFIG_DBTYPE = OCP\Config::getSystemValue( "dbtype", "sqlite" );
if( $CONFIG_DBTYPE == 'sqlite' or $CONFIG_DBTYPE == 'sqlite3' ){
$_ut = "strftime('%s','now')";
} elseif($CONFIG_DBTYPE == 'pgsql') {
$_ut = 'date_part(\'epoch\',now())::integer';
} else {
$_ut = "UNIX_TIMESTAMP()";
}
//FIXME: Detect when user adds a known URL
$query = OCP\DB::prepare("
INSERT INTO *PREFIX*bookmarks
(url, title, user_id, public, added, lastmodified)
VALUES (?, ?, ?, 0, $_ut, $_ut)
");
if(empty($title)) {
$metadata = getURLMetadata($url);
if(isset($metadata['title'])) // Check for problems fetching the title
$title = $metadata['title'];
}
if(empty($title)) {
$l = OC_L10N::get('bookmarks');
$title = $l->t('unnamed');
}
$params=array(
htmlspecialchars_decode($url),
htmlspecialchars_decode($title),
OCP\USER::getUser()
);
$query->execute($params);
$b_id = OCP\DB::insertid('*PREFIX*bookmarks');
if($b_id !== false) {
$query = OCP\DB::prepare("
INSERT INTO *PREFIX*bookmarks_tags
(bookmark_id, tag)
VALUES (?, ?)
");
$tags = explode(' ', urldecode($tags));
foreach ($tags as $tag) {
if(empty($tag)) {
//avoid saving blankspaces
continue;
}
$params = array($b_id, trim($tag));
$query->execute($params);
}
return $b_id;
}
}
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