true);
}
function init($host) {
$this->host = $host;
$host->add_hook($host::HOOK_ARTICLE_FILTER, $this);
$host->add_hook($host::HOOK_PREFS_TAB, $this);
$host->add_hook($host::HOOK_RENDER_ARTICLE, $this);
$host->add_hook($host::HOOK_RENDER_ARTICLE_CDM, $this);
$host->add_hook($host::HOOK_RENDER_ARTICLE_API, $this);
}
function hook_prefs_tab($args) {
if ($args != "prefFeeds") return;
$enable_readability = $this->host->get($this, "enable_readability");
$enable_content_dupcheck = $this->host->get($this, "enable_content_dupcheck");
$reddit_to_teddit = $this->host->get($this, "reddit_to_teddit");
?>
host->set($this, "enable_readability", $enable_readability, false);
$this->host->set($this, "reddit_to_teddit", $reddit_to_teddit, false);
$this->host->set($this, "enable_content_dupcheck", $enable_content_dupcheck);
echo __("Configuration saved");
}
private function process_post_media($data, $doc, $xpath, $anchor) {
$found = 0;
if (isset($data["media_metadata"])) {
foreach ($data["media_metadata"] as $media) {
if (!empty($media["s"]["u"])) {
$media_url = htmlspecialchars_decode($media["s"]["u"]);
Debug::log("found media_metadata (gallery): $media_url", Debug::$LOG_VERBOSE);
if ($media_url) {
$this->handle_as_image($doc, $anchor, $media_url);
$found = 1;
}
}
}
}
// v.redd.it - see below
/* if (is_array($data["media"])) {
foreach ($data["media"] as $media) {
if (isset($media["fallback_url"])) {
$stream_url = $media["fallback_url"];
if (isset($data["preview"]["images"][0]["source"]))
$poster_url = $data["preview"]["images"][0]["source"]["url"];
else
$poster_url = "";
Debug::log("found stream fallback_url: $stream_url / poster $poster_url", Debug::$LOG_VERBOSE);
$this->handle_as_video($doc, $anchor, $stream_url, $poster_url);
}
$found = 1;
}
} */
$post_hint = $data["post_hint"] ?? false;
if (!$found && $post_hint == "hosted:video") {
$media_url = $data["url"];
if (isset($data["preview"]["images"][0]["source"]))
$poster_url = htmlspecialchars_decode($data["preview"]["images"][0]["source"]["url"]);
else
$poster_url = "";
Debug::log("found hosted video url: $media_url / poster $poster_url, looking up fallback url...", Debug::$LOG_VERBOSE);
$fallback_url = $data["media"]["reddit_video"]["fallback_url"];
if ($fallback_url) {
Debug::log("found video fallback_url: $fallback_url", Debug::$LOG_VERBOSE);
$this->handle_as_video($doc, $anchor, $fallback_url, $poster_url);
$found = 1;
}
}
if (!$found && $post_hint == "video") {
$media_url = $data["url"];
if (isset($data["preview"]["images"][0]["source"]))
$poster_url = htmlspecialchars_decode($data["preview"]["images"][0]["source"]["url"]);
else
$poster_url = "";
Debug::log("found video url: $media_url / poster $poster_url", Debug::$LOG_VERBOSE);
$this->handle_as_video($doc, $anchor, $media_url, $poster_url);
$found = 1;
}
if (!$found && $post_hint == "image") {
$media_url = $data["url"];
Debug::log("found image url: $media_url", Debug::$LOG_VERBOSE);
$this->handle_as_image($doc, $anchor, $media_url);
$found = 1;
}
if (!$found && isset($data["preview"]["images"])) {
foreach ($data["preview"]["images"] as $img) {
if (isset($img["source"]["url"])) {
$media_url = htmlspecialchars_decode($img["source"]["url"]);
$target_url = $data["url"];
if ($media_url) {
if ($post_hint == "self") {
Debug::log("found preview image url: $media_url (link: $target_url)", Debug::$LOG_VERBOSE);
$this->handle_as_image($doc, $anchor, $media_url, $target_url);
$found = 1;
} else { // gonna use this later if nothing is found using generic link processing
Debug::log("found fallback preview image url: $media_url (link: $target_url);", Debug::$LOG_VERBOSE);
array_push($this->fallback_preview_urls, $media_url);
}
}
}
}
}
return $found;
}
private function inline_stuff($article, &$doc, $xpath) {
$found = false;
// embed before reddit post layout
$anchor = $xpath->query('//_body/*')->item(0);
// deal with json-provided media content first
if ($article["link"] && $anchor) {
Debug::log("JSON: requesting from URL: " . $article["link"] . "/.json", Debug::$LOG_VERBOSE);
$tmp = UrlHelper::fetch($article["link"] . "/.json");
$this->fallback_preview_urls = [];
// @phpstan-ignore-next-line
if ($tmp && $anchor) {
$json = json_decode($tmp, true);
if ($json) {
Debug::log("JSON: processing media elements...", Debug::$LOG_EXTENDED);
if ($this->dump_json_data) print_r($json);
foreach ($json as $listing) {
foreach ($listing["data"]["children"] as $child) {
$data = $child["data"];
if (isset($data["crosspost_parent_list"])) {
Debug::log("JSON: processing child crosspost_parent_list", Debug::$LOG_EXTENDED);
foreach ($data["crosspost_parent_list"] as $parent) {
if ($this->process_post_media($parent, $doc, $xpath, $anchor)) {
$found = 1;
break 2;
}
}
}
Debug::log("JSON: processing child data element...", Debug::$LOG_EXTENDED);
if (!$found && $this->process_post_media($data, $doc, $xpath, $anchor)) {
$found = 1;
break 2;
}
}
}
} else {
Debug::log("JSON: failed to parse received data.", Debug::$LOG_EXTENDED);
}
} else {
if (!$tmp) {
global $fetch_last_error;
Debug::log("JSON: failed to fetch post:" . $fetch_last_error, Debug::$LOG_EXTENDED);
}
}
} else if (!$anchor) {
Debug::log("JSON: anchor element not found, unable to embed", Debug::$LOG_EXTENDED);
}
if ($found) {
Debug::log("JSON: found media data, skipping further processing of content", Debug::$LOG_VERBOSE);
$this->remove_post_thumbnail($doc, $xpath);
return true;
}
$entries = $xpath->query('//a[@href]');
foreach ($entries as $entry) {
$entry_href = $entry->getAttribute("href");
$matches = [];
/* skip links going back to reddit (and any other blacklisted stuff) */
if (!$found && $this->is_blacklisted($entry_href, ["reddit.com"])) {
Debug::log("BODY: domain of $entry_href is blacklisted, skipping", Debug::$LOG_EXTENDED);
continue;
}
Debug::log("BODY: processing URL: " . $entry_href, Debug::$LOG_VERBOSE);
if (!$found && preg_match("/^https?:\/\/twitter.com\/(.*?)\/status\/(.*)/", $entry_href, $matches)) {
Debug::log("handling as twitter: " . $matches[1] . " " . $matches[2], Debug::$LOG_VERBOSE);
$oembed_result = UrlHelper::fetch("https://publish.twitter.com/oembed?url=" . urlencode($entry_href));
if ($oembed_result) {
$oembed_result = json_decode($oembed_result, true);
if ($oembed_result && isset($oembed_result["html"])) {
$tmp = new DOMDocument();
if (@$tmp->loadHTML('' . $oembed_result["html"])) {
$p = $doc->createElement("p");
$p->appendChild($doc->importNode(
$tmp->getElementsByTagName("blockquote")->item(0), TRUE));
$br = $doc->createElement('br');
$entry->parentNode->insertBefore($p, $entry);
$entry->parentNode->insertBefore($br, $entry);
$found = 1;
}
}
}
}
if (!$found && preg_match("/\.gfycat.com\/([a-z]+)?(\.[a-z]+)$/i", $entry_href, $matches)) {
$entry->setAttribute("href", "http://www.gfycat.com/".$matches[1]);
}
if (!$found && preg_match("/https?:\/\/(www\.)?gfycat.com\/([a-z]+)$/i", $entry_href, $matches)) {
Debug::log("Handling as Gfycat", Debug::$LOG_VERBOSE);
$source_stream = 'https://giant.gfycat.com/' . $matches[2] . '.mp4';
$poster_url = 'https://thumbs.gfycat.com/' . $matches[2] . '-mobile.jpg';
$content_type = $this->get_content_type($source_stream);
if (strpos($content_type, "video/") !== false) {
$this->handle_as_video($doc, $entry, $source_stream, $poster_url);
$found = 1;
}
}
// imgur .gif -> .gifv
if (!$found && preg_match("/i\.imgur\.com\/(.*?)\.gif$/i", $entry_href)) {
Debug::log("Handling as imgur gif (->gifv)", Debug::$LOG_VERBOSE);
$entry->setAttribute("href",
str_replace(".gif", ".gifv", $entry_href));
}
if (!$found && preg_match("/\.(gifv|mp4)$/i", $entry_href)) {
Debug::log("Handling as imgur gifv", Debug::$LOG_VERBOSE);
$source_stream = str_replace(".gifv", ".mp4", $entry_href);
if (strpos($source_stream, "imgur.com") !== false)
$poster_url = str_replace(".mp4", "h.jpg", $source_stream);
else
$poster_url = false;
$this->handle_as_video($doc, $entry, $source_stream, $poster_url);
$found = true;
}
$matches = array();
if (!$found && (preg_match("/youtube\.com\/v\/([\w-]+)/", $entry_href, $matches) ||
preg_match("/youtube\.com\/.*?[\&\?]v=([\w-]+)/", $entry_href, $matches) ||
preg_match("/youtube\.com\/embed\/([\w-]+)/", $entry_href, $matches) ||
preg_match("/youtube\.com\/watch\?v=([\w-]+)/", $entry_href, $matches) ||
preg_match("/\/\/youtu.be\/([\w-]+)/", $entry_href, $matches))) {
$vid_id = $matches[1];
Debug::log("Handling as youtube: $vid_id", Debug::$LOG_VERBOSE);
$iframe = $doc->createElement("iframe");
$iframe->setAttribute("class", "youtube-player");
$iframe->setAttribute("type", "text/html");
$iframe->setAttribute("width", "640");
$iframe->setAttribute("height", "385");
$iframe->setAttribute("src", "https://www.youtube.com/embed/$vid_id");
$iframe->setAttribute("allowfullscreen", "1");
$iframe->setAttribute("frameborder", "0");
$br = $doc->createElement('br');
$entry->parentNode->insertBefore($iframe, $entry);
$entry->parentNode->insertBefore($br, $entry);
$found = true;
}
if (!$found && (preg_match("/\.(jpg|jpeg|gif|png)(\?[0-9][0-9]*)?[$\?]/i", $entry_href) ||
/* mb_strpos($entry_href, "i.reddituploads.com") !== false || */
mb_strpos($this->get_content_type($entry_href), "image/") !== false)) {
Debug::log("Handling as a picture", Debug::$LOG_VERBOSE);
$img = $doc->createElement('img');
$img->setAttribute("src", $entry_href);
$br = $doc->createElement('br');
$entry->parentNode->insertBefore($img, $entry);
$entry->parentNode->insertBefore($br, $entry);
$found = true;
}
// imgur via link rel="image_src" href="..."
if (!$found && preg_match("/imgur/", $entry_href)) {
Debug::log("handling as imgur page/whatever", Debug::$LOG_VERBOSE);
$content = UrlHelper::fetch(["url" => $entry_href,
"http_accept" => "text/*"]);
if ($content) {
$cdoc = new DOMDocument();
if (@$cdoc->loadHTML($content)) {
$cxpath = new DOMXPath($cdoc);
$rel_image = $cxpath->query("//link[@rel='image_src']")->item(0);
if ($rel_image) {
$img = $doc->createElement('img');
$img->setAttribute("src", $rel_image->getAttribute("href"));
$br = $doc->createElement('br');
$entry->parentNode->insertBefore($img, $entry);
$entry->parentNode->insertBefore($br, $entry);
$found = true;
}
}
}
}
// wtf is this even
if (!$found && preg_match("/^https?:\/\/gyazo\.com\/([^\.\/]+$)/", $entry_href, $matches)) {
$img_id = $matches[1];
Debug::log("handling as gyazo: $img_id", Debug::$LOG_VERBOSE);
$img = $doc->createElement('img');
$img->setAttribute("src", "https://i.gyazo.com/$img_id.jpg");
$br = $doc->createElement('br');
$entry->parentNode->insertBefore($img, $entry);
$entry->parentNode->insertBefore($br, $entry);
$found = true;
}
// let's try meta properties
if (!$found) {
Debug::log("looking for meta og:image", Debug::$LOG_VERBOSE);
$content = UrlHelper::fetch(["url" => $entry_href,
"http_accept" => "text/*"]);
if ($content) {
$cdoc = new DOMDocument();
if (@$cdoc->loadHTML($content)) {
$cxpath = new DOMXPath($cdoc);
$og_image = $cxpath->query("//meta[@property='og:image']")->item(0);
$og_video = $cxpath->query("//meta[@property='og:video']")->item(0);
if ($og_video) {
$source_stream = $og_video->getAttribute("content");
if ($source_stream) {
if ($og_image) {
$poster_url = $og_image->getAttribute("content");
} else {
$poster_url = false;
}
$this->handle_as_video($doc, $entry, $source_stream, $poster_url);
$found = true;
}
} else if ($og_image) {
$og_src = $og_image->getAttribute("content");
if ($og_src) {
$img = $doc->createElement('img');
$img->setAttribute("src", $og_src);
$br = $doc->createElement('br');
$entry->parentNode->insertBefore($img, $entry);
$entry->parentNode->insertBefore($br, $entry);
$found = true;
}
}
}
}
}
}
if (!$found && $anchor && count($this->fallback_preview_urls) > 0) {
Debug::log("JSON: processing fallback preview urls...", Debug::$LOG_VERBOSE);
foreach ($this->fallback_preview_urls as $media_url) {
$this->handle_as_image($doc, $anchor, $media_url);
$found = 1;
}
}
if ($found)
$this->remove_post_thumbnail($doc, $xpath);
return $found;
}
function hook_article_filter($article) {
if (strpos($article["link"], "reddit.com/r/") !== false && !empty($article["content"])) {
$doc = new DOMDocument();
if (@$doc->loadHTML($article["content"])) {
$xpath = new DOMXPath($doc);
$content_link = $xpath->query("(//a[contains(., '[link]')])")->item(0);
if ($this->host->get($this, "enable_content_dupcheck")) {
if ($content_link) {
$content_href = $content_link->getAttribute("href");
$entry_guid = $article["guid_hashed"];
$owner_uid = $article["owner_uid"];
if (DB_TYPE == "pgsql") {
$interval_qpart = "date_entered < NOW() - INTERVAL '1 day'";
} else {
$interval_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 DAY)";
}
$sth = $this->pdo->prepare("SELECT COUNT(id) AS cid
FROM ttrss_entries, ttrss_user_entries WHERE
ref_id = id AND
$interval_qpart AND
guid != ? AND
owner_uid = ? AND
content LIKE ?");
$sth->execute([$entry_guid, $owner_uid, "%href=\"$content_href\">[link]%"]);
if ($row = $sth->fetch()) {
$num_found = $row['cid'];
if ($num_found > 0) $article["force_catchup"] = true;
}
}
}
if ($content_link && $this->is_blacklisted($content_link->getAttribute("href")))
return $article;
$found = $this->inline_stuff($article, $doc, $xpath);
$node = $doc->getElementsByTagName('body')->item(0);
if ($node && $found) {
$article["content"] = $doc->saveHTML($node);
$article["enclosures"] = [];
} else if ($content_link) {
$article = $this->readability($article, $content_link->getAttribute("href"), $doc, $xpath);
}
}
}
return $article;
}
function api_version() {
return 2;
}
private function remove_post_thumbnail($doc, $xpath) {
$thumb = $xpath->query("//td/a/img[@src]")->item(0);
if ($thumb)
$thumb->parentNode->parentNode->removeChild($thumb->parentNode);
}
private function handle_as_image($doc, $entry, $image_url, $link_url = false) {
$img = $doc->createElement("img");
$img->setAttribute("src", $image_url);
$p = $doc->createElement("p");
if ($link_url) {
$a = $doc->createElement("a");
$a->setAttribute("href", $link_url);
$a->appendChild($img);
$p->appendChild($a);
} else {
$p->appendChild($img);
}
$entry->parentNode->insertBefore($p, $entry);
}
private function handle_as_video($doc, $entry, $source_stream, $poster_url = false) {
Debug::log("handle_as_video: $source_stream", Debug::$LOG_VERBOSE);
$video = $doc->createElement('video');
$video->setAttribute("autoplay", "1");
$video->setAttribute("controls", "1");
$video->setAttribute("loop", "1");
if ($poster_url) $video->setAttribute("poster", $poster_url);
$source = $doc->createElement('source');
$source->setAttribute("src", $source_stream);
$source->setAttribute("type", "video/mp4");
$video->appendChild($source);
$br = $doc->createElement('br');
$entry->parentNode->insertBefore($video, $entry);
$entry->parentNode->insertBefore($br, $entry);
/*$img = $doc->createElement('img');
$img->setAttribute("src",
"data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D");
$entry->parentNode->insertBefore($img, $entry);*/
}
function csrf_ignore($method) {
return $method === "testurl";
}
function testurl() {
$url = clean($_POST["url"]);
$article_url = clean($_POST["article_url"]);
$this->dump_json_data = true;
if (!$url && !$article_url) {
header("Content-type: text/html");
?>
loadHTML("");
$xpath = new DOMXPath($doc);
$found = $this->inline_stuff(["link" => $article_url], $doc, $xpath);
Debug::log("Inline result: $found", Debug::$LOG_VERBOSE);
if (!$found) {
Debug::log("Readability result:", Debug::$LOG_VERBOSE);
$article = $this->readability([], $url, $doc, $xpath);
print_r($article);
} else {
Debug::log("Resulting HTML:", Debug::$LOG_VERBOSE);
print $doc->saveHTML();
}
}
private function get_header($url, $header, $useragent = SELF_USER_AGENT) {
$ret = false;
if (function_exists("curl_init") && !defined("NO_CURL")) {
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_TIMEOUT, 5);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_NOBODY, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, !ini_get("open_basedir"));
curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
@curl_exec($ch);
$ret = curl_getinfo($ch, $header);
}
return $ret;
}
private function get_content_type($url, $useragent = SELF_USER_AGENT) {
return $this->get_header($url, CURLINFO_CONTENT_TYPE, $useragent);
}
private function get_location($url, $useragent = SELF_USER_AGENT) {
return $this->get_header($url, CURLINFO_EFFECTIVE_URL, $useragent);
}
private function readability($article, $url, $doc, $xpath, $debug = false) {
if (!defined('NO_CURL') && function_exists("curl_init") && $this->host->get($this, "enable_readability") &&
mb_strlen(strip_tags($article["content"])) <= 150) {
// do not try to embed posts linking back to other reddit posts
// readability.php requires PHP 5.6
if ($url && strpos($url, "reddit.com") === false && version_compare(PHP_VERSION, '5.6.0', '>=')) {
/* link may lead to a huge video file or whatever, we need to check content type before trying to
parse it which p much requires curl */
$useragent_compat = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)";
$content_type = $this->get_content_type($url, $useragent_compat);
if ($content_type && strpos($content_type, "text/html") !== false) {
$this->host->run_hooks_callback(PluginHost::HOOK_GET_FULL_TEXT,
function ($result) use (&$article) {
if ($result) {
$article["content"] = $result;
return true;
}
},
$url);
}
}
}
return $article;
}
private function is_blacklisted($src, $also_blacklist = []) {
$src_domain = parse_url($src, PHP_URL_HOST);
foreach (array_merge($this->domain_blacklist, $also_blacklist) as $domain) {
if (strstr($src_domain, $domain) !== false) {
return true;
}
}
return false;
}
function hook_render_article($article) {
return $this->hook_render_article_cdm($article);
}
private function rewrite_to_teddit($str) {
if (strpos($str, "reddit.com") !== false) {
return preg_replace("/https?:\/\/([a-z]+\.)?reddit\.com/", "https://teddit.net", $str);
}
return $str;
}
function hook_render_article_cdm($article) {
if ($this->host->get($this, "reddit_to_teddit")) {
$need_saving = false;
$article["link"] = $this->rewrite_to_teddit($article["link"]);
$doc = new DOMDocument();
if (@$doc->loadHTML('' . $article["content"])) {
$xpath = new DOMXPath($doc);
$elems = $xpath->query("//a[@href]");
foreach ($elems as $elem) {
$href = $elem->getAttribute("href");
$rewritten_href = $this->rewrite_to_teddit($href);
if ($href != $rewritten_href) {
$elem->setAttribute("href", $rewritten_href);
$need_saving = true;
}
}
}
if ($need_saving) $article["content"] = $doc->saveHTML();
}
return $article;
}
function hook_render_article_api($params) {
$article = isset($params["article"]) ? $params["article"] : $params["headline"];
return $this->hook_render_article_cdm($article);
}
}