wallabag/inc/functions.php
2013-04-17 15:32:57 +02:00

415 lines
No EOL
12 KiB
PHP

<?php
/**
* Permet de générer l'URL de poche pour le bookmarklet
*/
function get_poche_url()
{
$protocol = "http";
if(isset($_SERVER['HTTPS'])) {
if($_SERVER['HTTPS'] != "off") {
$protocol = "https";
}
}
return $protocol . "://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
}
// function define to retrieve url content
function get_external_file($url)
{
$timeout = 15;
// spoofing FireFox 18.0
$useragent="Mozilla/5.0 (Windows NT 5.1; rv:18.0) Gecko/20100101 Firefox/18.0";
if (in_array ('curl', get_loaded_extensions())) {
// Fetch feed from URL
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_TIMEOUT, $timeout);
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_HEADER, false);
// FeedBurner requires a proper USER-AGENT...
curl_setopt($curl, CURL_HTTP_VERSION_1_1, true);
curl_setopt($curl, CURLOPT_ENCODING, "gzip, deflate");
curl_setopt($curl, CURLOPT_USERAGENT, $useragent);
$data = curl_exec($curl);
$httpcode = curl_getinfo($curl, CURLINFO_HTTP_CODE);
$httpcodeOK = isset($httpcode) and ($httpcode == 200 or $httpcode == 301);
curl_close($curl);
} else {
// create http context and add timeout and user-agent
$context = stream_context_create(array('http'=>array('timeout' => $timeout,'header'=> "User-Agent: ".$useragent,/*spoot Mozilla Firefox*/'follow_location' => true)));
// only download page lesser than 4MB
$data = @file_get_contents($url, false, $context, -1, 4000000); // We download at most 4 MB from source.
if(isset($http_response_header) and isset($http_response_header[0])) {
$httpcodeOK = isset($http_response_header) and isset($http_response_header[0]) and ((strpos($http_response_header[0], '200 OK') !== FALSE) or (strpos($http_response_header[0], '301 Moved Permanently') !== FALSE));
}
}
// if response is not empty and response is OK
if (isset($data) and isset($httpcodeOK) and $httpcodeOK ) {
// take charset of page and get it
preg_match('#<meta .*charset=.*>#Usi', $data, $meta);
// if meta tag is found
if (!empty($meta[0])) {
// retrieve encoding in $enc
preg_match('#charset="?(.*)"#si', $meta[0], $enc);
// if charset is found set it otherwise, set it to utf-8
$html_charset = (!empty($enc[1])) ? strtolower($enc[1]) : 'utf-8';
} else {
$html_charset = 'utf-8';
$enc[1] = '';
}
// replace charset of url to charset of page
$data = str_replace('charset='.$enc[1], 'charset='.$html_charset, $data);
return $data;
}
else {
return FALSE;
}
}
/**
* Préparation de l'URL avec récupération du contenu avant insertion en base
*/
function prepare_url($url, $id)
{
$parametres = array();
$url = html_entity_decode(trim($url));
// We remove the annoying parameters added by FeedBurner and GoogleFeedProxy (?utm_source=...)
// from shaarli, by sebsauvage
$i=strpos($url,'&utm_source='); if ($i!==false) $url=substr($url,0,$i);
$i=strpos($url,'?utm_source='); if ($i!==false) $url=substr($url,0,$i);
$i=strpos($url,'#xtor=RSS-'); if ($i!==false) $url=substr($url,0,$i);
$title = $url;
if (!preg_match('!^https?://!i', $url))
$url = 'http://' . $url;
$html = Encoding::toUTF8(get_external_file($url,15));
if (isset($html) and strlen($html) > 0)
{
$r = new Readability($html, $url);
$r->convertLinksToFootnotes = TRUE;
if($r->init())
{
$content = $r->articleContent->innerHTML;
$parametres['title'] = $r->articleTitle->innerHTML;
$parametres['content'] = filtre_picture($content, $url, $id);
return $parametres;
}
}
logm('error during url preparation');
return FALSE;
}
/**
* On modifie les URLS des images dans le corps de l'article
*/
function filtre_picture($content, $url, $id)
{
$matches = array();
preg_match_all('#<\s*(img)[^>]+src="([^"]*)"[^>]*>#Si', $content, $matches, PREG_SET_ORDER);
foreach($matches as $i => $link)
{
$link[1] = trim($link[1]);
if (!preg_match('#^(([a-z]+://)|(\#))#', $link[1]) )
{
$absolute_path = get_absolute_link($link[2],$url);
$filename = basename(parse_url($absolute_path, PHP_URL_PATH));
$directory = create_assets_directory($id);
$fullpath = $directory . '/' . $filename;
download_pictures($absolute_path, $fullpath);
$content = str_replace($matches[$i][2], $fullpath, $content);
}
}
return $content;
}
/**
* Retourne le lien absolu
*/
function get_absolute_link($relative_link, $url)
{
/* return if already absolute URL */
if (parse_url($relative_link, PHP_URL_SCHEME) != '') return $relative_link;
/* queries and anchors */
if ($relative_link[0]=='#' || $relative_link[0]=='?') return $url . $relative_link;
/* parse base URL and convert to local variables:
$scheme, $host, $path */
extract(parse_url($url));
/* remove non-directory element from path */
$path = preg_replace('#/[^/]*$#', '', $path);
/* destroy path if relative url points to root */
if ($relative_link[0] == '/') $path = '';
/* dirty absolute URL */
$abs = $host . $path . '/' . $relative_link;
/* replace '//' or '/./' or '/foo/../' with '/' */
$re = array('#(/\.?/)#', '#/(?!\.\.)[^/]+/\.\./#');
for($n=1; $n>0; $abs=preg_replace($re, '/', $abs, -1, $n)) {}
/* absolute URL is ready! */
return $scheme.'://'.$abs;
}
/**
* Téléchargement des images
*/
function download_pictures($absolute_path, $fullpath)
{
$rawdata = get_external_file($absolute_path);
if(file_exists($fullpath)) {
unlink($fullpath);
}
$fp = fopen($fullpath, 'x');
fwrite($fp, $rawdata);
fclose($fp);
}
/**
* Crée un répertoire de médias pour l'article
*/
function create_assets_directory($id)
{
$assets_path = ABS_PATH;
if(!is_dir($assets_path)) {
mkdir($assets_path, 0705);
}
$article_directory = $assets_path . $id;
if(!is_dir($article_directory)) {
mkdir($article_directory, 0705);
}
return $article_directory;
}
/**
* Suppression du répertoire d'images
*/
function remove_directory($directory)
{
if(is_dir($directory)) {
$files = array_diff(scandir($directory), array('.','..'));
foreach ($files as $file) {
// FIXME c'est quoi delTree ??
(is_dir("$directory/$file")) ? delTree("$directory/$file") : unlink("$directory/$file");
}
return rmdir($directory);
}
}
/**
* Appel d'une action (mark as fav, archive, delete)
*/
function action_to_do($action, $id, $url, $token)
{
global $db;
switch ($action)
{
case 'add':
if ($url == '')
continue;
$req = $db->getHandle()->query("SELECT id FROM entries ORDER BY id DESC");
$id = $req->fetchColumn()+1;
if($parametres_url = prepare_url($url, $id)) {
$sql_action = 'INSERT INTO entries ( id, url, title, content ) VALUES (?,?, ?, ?)';
$params_action = array($id,$url, $parametres_url['title'], $parametres_url['content']);
}
logm('add link ' . $url);
break;
case 'delete':
if (verif_token($token)) {
remove_directory(ABS_PATH . $id);
$sql_action = "DELETE FROM entries WHERE id=?";
$params_action = array($id);
logm('delete link #' . $id);
}
else logm('csrf problem while deleting entry');
break;
case 'toggle_fav' :
if (verif_token($token)) {
$sql_action = "UPDATE entries SET is_fav=~is_fav WHERE id=?";
$params_action = array($id);
logm('mark as favorite link #' . $id);
}
else logm('csrf problem while fav entry');
break;
case 'toggle_archive' :
if (verif_token($token)) {
$sql_action = "UPDATE entries SET is_read=~is_read WHERE id=?";
$params_action = array($id);
logm('archive link #' . $id);
}
else logm('csrf problem while archive entry');
break;
default:
break;
}
try
{
# action query
if (isset($sql_action))
{
$query = $db->getHandle()->prepare($sql_action);
$query->execute($params_action);
}
}
catch (Exception $e)
{
logm('action query error : '.$e->getMessage());
}
}
/**
* Détermine quels liens afficher : home, fav ou archives
*/
function display_view($view)
{
global $db;
switch ($_SESSION['sort'])
{
case 'ia':
$order = 'ORDER BY id';
break;
case 'id':
$order = 'ORDER BY id DESC';
break;
case 'ta':
$order = 'ORDER BY lower(title)';
break;
case 'td':
$order = 'ORDER BY lower(title) DESC';
break;
default:
$order = 'ORDER BY id';
break;
}
switch ($view)
{
case 'archive':
$sql = "SELECT * FROM entries WHERE is_read=? " . $order;
$params = array(-1);
break;
case 'fav' :
$sql = "SELECT * FROM entries WHERE is_fav=? " . $order;
$params = array(-1);
break;
default:
$sql = "SELECT * FROM entries WHERE is_read=? " . $order;
$params = array(0);
break;
}
# view query
try
{
$query = $db->getHandle()->prepare($sql);
$query->execute($params);
$entries = $query->fetchAll();
}
catch (Exception $e)
{
logm('view query error : '.$e->getMessage());
}
return $entries;
}
/**
* Récupère un article en fonction d'un ID
*/
function get_article($id)
{
global $db;
$entry = NULL;
$sql = "SELECT * FROM entries WHERE id=?";
$params = array(intval($id));
# view article query
try
{
$query = $db->getHandle()->prepare($sql);
$query->execute($params);
$entry = $query->fetchAll();
}
catch (Exception $e)
{
logm('get article query error : '.$e->getMessage());
}
return $entry;
}
/**
* Vérifie si le jeton passé en $_POST correspond à celui en session
*/
function verif_token($token)
{
if(isset($_SESSION['token_poche']) && isset($_SESSION['token_time_poche']) && isset($token))
{
if($_SESSION['token_poche'] == $token)
{
$old_timestamp = time() - (15*60);
if($_SESSION['token_time_poche'] >= $old_timestamp)
{
return TRUE;
}
else {
session_destroy();
logm('session expired');
}
}
else {
logm('token error : the token is different');
return FALSE;
}
}
else {
logm('token error : the token is not here');
return FALSE;
}
}
function logm($message)
{
$t = strval(date('Y/m/d_H:i:s')).' - '.$_SERVER["REMOTE_ADDR"].' - '.strval($message)."\n";
file_put_contents('./log.txt',$t,FILE_APPEND);
}