@ -1,90 +1,80 @@
<?php
class Cache_Starred_Images extends Plugin implements IHandler {
class Cache_Starred_Images extends Plugin {
/* @var PluginHost $host */
private $host;
private $cache_dir;
/* @var DiskCache $cache */
private $cache;
private $max_cache_attempts = 5; // per-article
function about() {
return array(1.0,
"Automatically cache Starred articles' images and HTML5 video files",
"fox",
true);
}
/**
* @SuppressWarnings(PHPMD.UnusedFormalParameter)
*/
function csrf_ignore($method) {
return false;
}
/**
* @SuppressWarnings(PHPMD.UnusedFormalParameter)
*/
function before($method) {
return true;
}
function after() {
return true;
"Automatically cache media files in Starred articles",
"fox");
}
function init($host) {
$this->host = $host;
$this->cache = new DiskCache("starred-images");
$this->cache_dir = CACHE_DIR . "/starred-images/";
if (!is_dir($this->cache_dir)) {
mkdir($this->cache_dir);
}
if ($this->cache->makeDir())
chmod($this->cache->getDir(), 0777);
if (is_dir($this->cache_dir)) {
if (!is_writable($this->cache_dir))
chmod($this->cache_dir, 0777);
if (is_writable($this->cache_dir)) {
$host->add_hook($host::HOOK_UPDATE_TASK, $this);
$host->add_hook($host::HOOK_HOUSE_KEEPING, $this);
$host->add_hook($host::HOOK_SANITIZE, $this);
$host->add_handler("public", "cache_starred_images_getimage", $this);
} else {
user_error("Starred cache directory is not writable.", E_USER_WARNING);
}
if (!$this->cache->exists(".no-auto-expiry"))
$this->cache->touch(".no-auto-expiry");
if ($this->cache->isWritable()) {
$host->add_hook($host::HOOK_HOUSE_KEEPING, $this);
$host->add_hook($host::HOOK_ENCLOSURE_ENTRY, $this);
$host->add_hook($host::HOOK_SANITIZE, $this);
} else {
user_error("Unable to create starred cache directory.", E_USER_WARNING);
user_error("Starred cache directory ".$this->cache->getDir()." is not writable.", E_USER_WARNING);
}
}
function cache_starred_images_getimage() {
ob_end_clean();
/**
* @SuppressWarnings(PHPMD.UnusedLocalVariable)
*/
function hook_house_keeping() {
/* since HOOK_UPDATE_TASK is not available to user plugins, this hook is a next best thing */
$hash = basename($_REQUEST["hash"]);
Debug::log("caching media of starred articles for user " . $this->host->get_owner_uid() . "..." );
if ($hash) {
$sth = $this->pdo->prepare("SELECT content, ttrss_entries.title,
ttrss_user_entries.owner_uid, link, site_url, ttrss_entries.id, plugin_data
FROM ttrss_entries, ttrss_user_entries LEFT JOIN ttrss_feeds ON
(ttrss_user_entries.feed_id = ttrss_feeds.id)
WHERE ref_id = ttrss_entries.id AND
marked = true AND
site_url != '' AND
ttrss_user_entries.owner_uid = ? AND
plugin_data NOT LIKE '%starred_cache_images%'
ORDER BY ".sql_random_function()." LIMIT 100");
$filename = $this->cache_dir . "/" . basename($hash);
if ($sth->execute([$this->host->get_owner_uid()])) {
if (file_exists($filename)) {
header("Content-Disposition: attachment; filename=\"$hash\"");
$usth = $this->pdo->prepare("UPDATE ttrss_entries SET plugin_data = ? WHERE id = ?");
send_local_file($filename);
} else {
header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found");
echo "File not found.";
while ($line = $sth->fetch()) {
Debug::log("processing article " . $line["title"], Debug::$LOG_VERBOSE);
if ($line["site_url"]) {
$success = $this->cache_article_images($line["content"], $line["site_url"], $line["owner_uid"], $line["id"]);
if ($success) {
$plugin_data = "starred_cache_images,${line['owner_uid']}:" . $line["plugin_data"];
$usth->execute([$plugin_data, $line['id']]);
}
}
}
}
}
/**
* @SuppressWarnings(PHPMD.UnusedLocalVariable)
*/
function hook_house_keeping() {
$files = glob($this->cache_dir . "/*.{png,mp4,status}", GLOB_BRACE);
/* actual housekeeping */
Debug::log("expiring " . $this->cache->getDir() . "...");
$files = glob($this->cache->getDir() . "/*.{png,mp4,status}", GLOB_BRACE);
$last_article_id = 0;
$article_exists = 1;
@ -107,6 +97,16 @@ class Cache_Starred_Images extends Plugin implements IHandler {
}
}
function hook_enclosure_entry($enc, $article_id) {
$local_filename = $article_id . "-" . sha1($enc["content_url"]);
if ($this->cache->exists($local_filename)) {
$enc["content_url"] = DiskCache::getUrl("starred-images/" . $local_filename);
}
return $enc;
}
/**
* @SuppressWarnings(PHPMD.UnusedFormalParameter)
*/
@ -120,15 +120,12 @@ class Cache_Starred_Images extends Plugin implements IHandler {
if ($entry->hasAttribute('src')) {
$src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
$extension = $entry->tagName == 'source' ? '.mp4' : '.png';
$local_filename = $this->cache_dir . $article_id . "-" . sha1($src) . $extension;
$local_filename = $article_id . "-" . sha1($src);
if (file_exists($local_filename)) {
$entry->setAttribute("src", get_self_url_prefix() .
"/public.php?op=cache_starred_images_getimage& method=image& hash=" .
$article_id . "-" . sha1($src) . $extension);
if ($this->cache->exists($local_filename)) {
$entry->setAttribute("src", DiskCache::getUrl("starred-images/" . $local_filename));
$entry->removeAttribute("srcset");
}
}
}
}
@ -136,42 +133,46 @@ class Cache_Starred_Images extends Plugin implements IHandler {
return $doc;
}
function hook_update_task() {
$res = $this->pdo->query("SELECT content, ttrss_user_entries.owner_uid, link, site_url, ttrss_entries.id, plugin_data
FROM ttrss_entries, ttrss_user_entries LEFT JOIN ttrss_feeds ON
(ttrss_user_entries.feed_id = ttrss_feeds.id)
WHERE ref_id = ttrss_entries.id AND
marked = true AND
(UPPER(content) LIKE '%< IMG % ' OR UPPER ( content ) LIKE ' % < VIDEO % ' ) AND
site_url != '' AND
plugin_data NOT LIKE '%starred_cache_images%'
ORDER BY ".sql_random_function()." LIMIT 100");
private function cache_url($article_id, $url) {
$local_filename = $article_id . "-" . sha1($url);
$usth = $this->pdo->prepare("UPDATE ttrss_entries SET plugin_data = ? WHERE id = ?");
if (!$this->cache->getSize($local_filename) >= 0) {
Debug::log("cache_images: downloading: $url to $local_filename", Debug::$LOG_VERBOSE);
while ($line = $res->fetch()) {
if ($line["site_url"]) {
$success = $this->cache_article_images($line["content"], $line["site_url"], $line["owner_uid"], $line["id"]);
$data = fetch_file_contents(["url" => $url, "max_size" => MAX_CACHE_FILE_SIZE]);
if ($success) {
$plugin_data = "starred_cache_images,${line['owner_uid']}:" . $line["plugin_data"];
$usth->execute([$plugin_data, $line['id']]);
if ($data) {
if (strlen($data) > MIN_CACHE_FILE_SIZE) {
$this->cache->put($local_filename, $data);
}
return true;
}
} else {
//Debug::log("cache_images: local file exists for $url", Debug::$LOG_VERBOSE);
return true;
}
return false;
}
/**
* @SuppressWarnings(PHPMD.UnusedFormalParameter)
*/
function cache_article_images($content, $site_url, $owner_uid, $article_id) {
$status_filename = $this->cache_dir . $ article_id . "-" . sha1($site_url) . ".status";
private function cache_article_images($content, $site_url, $owner_uid, $article_id) {
$status_filename = $article_id . "-" . sha1($site_url) . ".status";
Debug::log("status: $status_filename", Debug::$LOG_EXTENDED);
/* housekeeping might run as a separate user, in this case status/media might not be writable */
if (!$this->cache->isWritable($status_filename)) {
Debug::log("status not writable: $status_filename", Debug::$LOG_VERBOSE);
return false;
}
if (file_exists($status_filename))
$status = json_decode(file_get_contents($status_filename), true);
Debug::log("status: $status_filename", Debug::$LOG_VERBOSE);
if ($this->cache->exists($status_filename))
$status = json_decode($this->cache->get($status_filename), true);
else
$status = [];
@ -180,47 +181,48 @@ class Cache_Starred_Images extends Plugin implements IHandler {
// only allow several download attempts for article
if ($status["attempt"] > $this->max_cache_attempts) {
Debug::log("too many attempts for $site_url", Debug::$LOG_VERBOSE);
return;
return false ;
}
if (!file_put_contents ($status_filename, json_encode($status))) {
if (!$this->cache->put ($status_filename, json_encode($status))) {
user_error("unable to write status file: $status_filename", E_USER_WARNING);
return;
return false ;
}
$doc = new DOMDocument();
$doc->loadHTML('<? xml encoding = "UTF-8" > ' . $content );
$xpath = new DOMXPath($doc);
$entries = $xpath->query('(//img[@src])|(//video/source[@src])');
$success = false;
$has_images = false;
$success = false;
if ($doc->loadHTML('<? xml encoding = "UTF-8" > ' . $content )) {
$xpath = new DOMXPath($doc);
$entries = $xpath->query('(//img[@src])|(//video/source[@src])');
foreach ($entries as $entry) {
foreach ($entries as $entry) {
if ($entry->hasAttribute('src') & & strpos($entry->getAttribute('src'), "data:") !== 0) {
if ($entry->hasAttribute('src') & & strpos($entry->getAttribute('src'), "data:") !== 0) {
$has_images = true;
$src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
$has_images = true;
$extension = $entry->tagName == 'source' ? '.mp4' : '.png' ;
$src = rewrite_relative_url($site_url, $entry->getAttribute('src')) ;
$local_filename = $this->cache_dir . $article_id . "-" . sha1($src) . $extension;
if ($this->cache_url($article_id, $src)) {
$success = true;
}
}
}
}
Debug::log("cache_images: downloading: $src to $local_filename", Debug::$LOG_VERBOSE);
$esth = $this->pdo->prepare("SELECT content_url FROM ttrss_enclosures WHERE post_id = ? AND
(content_type LIKE '%image%' OR content_type LIKE '%video%')");
if (!file_exists($local_filename)) {
$file_content = fetch_file_contents(["url" => $src, "max_size" => MAX_CACHE_FILE_SIZE]);
if ($esth->execute([$article_id] )) {
while ($enc = $esth->fetch()) {
if ($file_content) {
if (strlen($file_content) > MIN_CACHE_FILE_SIZE) {
file_put_contents($local_filename, $file_content);
}
$has_images = true;
$url = rewrite_relative_url($site_url, $enc["content_url"]);
$success = true;
}
} else {
if ($this->cache_url($article_id, $url)) {
$success = true;
}
}