GNUsocial/gnu-social
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[Embed] Fix usage of EmbedLib

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Fix other minor bugs
This commit is contained in:
Diogo Peralta Cordeiro
2021-08-12 00:41:57 +01:00
committed by Hugo Sales
parent 968e3431e1
commit 7a0a6f1f22
2 changed files with 176 additions and 245 deletions
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268
plugins/Embed/Embed.php
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@@ -27,9 +27,8 @@
* @author hannes
* @author Mikael Nordfeldth
* @author Miguel Dantas
* @author Hugo Sales <hugo@hsal.es>
* @author Diogo Peralta Cordeiro <mail@diogo.site>
* @authir Hugo Sales <hugo@hsal.es>
*
* @copyright 2014-2021 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
@@ -41,14 +40,19 @@ use App\Core\DB\DB;
use App\Core\Event;
use App\Core\GSFile;
use App\Core\HTTPClient;
use function App\Core\I18n\_m;
use App\Core\Log;
use App\Core\Modules\Plugin;
use App\Core\Router\RouteLoader;
use App\Core\Router\Router;
use App\Entity\Attachment;
use App\Entity\Note;
use App\Entity\RemoteURL;
use App\Util\Common;
use App\Util\Exception\DuplicateFoundException;
use App\Util\Exception\NotFoundException;
use App\Util\Exception\ServerException;
use App\Util\Exception\TemporaryFileException;
use App\Util\Formatting;
use App\Util\TemporaryFile;
use Embed\Embed as LibEmbed;
@@ -64,11 +68,16 @@ use Symfony\Component\HttpFoundation\Request;
*/
class Embed extends Plugin
{
public function version(): string
{
return '3.0.0';
}
/**
* Settings which can be set in social.local.yaml
* WARNING, these are _regexps_ (slashes added later). Always escape your dots and end ('$') your strings
*/
public $domain_allowlist = [
public array $domain_whitelist = [
// hostname => service provider
'.*' => '', // Default to allowing any host
];
@@ -77,11 +86,11 @@ class Embed extends Plugin
* This code executes when GNU social creates the page routing, and we hook
* on this event to add our action handler for Embed.
*
* @param $m URLMapper the router that was initialized.
* @param $m RouteLoader the router that was initialized.
*
* @throws Exception
*
* @return bool true if successful, the exception object if it isn't.
* @return bool
*
*/
public function onAddRoute(RouteLoader $m): bool
@@ -121,73 +130,125 @@ class Embed extends Plugin
/**
* Save embedding information for an Attachment, if applicable.
*
* Normally this event is called through File::saveNew()
* @param RemoteURL $remote_url
* @param Note $note
*
* @param Attachment $attachment The newly inserted Attachment object.
* @throws DuplicateFoundException
* @throws ServerException
* @throws TemporaryFileException
*
* @return bool success
* @return bool
*/
public function onAttachmentStoreNew(Attachment $attachment): bool
public function onNewRemoteURLFromNote(RemoteURL $remote_url, Note $note): bool
{
try {
DB::findOneBy('attachment_embed', ['attachment_id' => $attachment->getId()]);
} catch (NotFoundException) {
if ($attachment->hasRemoteUrl() && $attachment->hasMimetype()) {
$mimetype = $attachment->getMimetype();
if (Formatting::startsWith($mimetype, 'text/html') || Formatting::startsWith($mimetype, 'application/xhtml+xml')) {
try {
$embed_data = $this->getEmbed($attachment->getRemoteUrl(), $attachment);
$embed_data['attachment_id'] = $attachment->getId();
DB::persist(Entity\AttachmentEmbed::create($embed_data));
DB::flush();
} catch (Exception $e) {
Log::warning($e);
}
}
// Only handle text mime
if ($remote_url->getMimetypeMajor() !== 'text') {
return Event::next;
}
// Ignore if already handled
$attachment_embed = DB::find('attachment_embed', ['remoteurl_id' => $remote_url->getId()]);
if (!is_null($attachment_embed)) {
return Event::next;
}
$mimetype = $remote_url->getMimetype();
if (Formatting::startsWith($mimetype, 'text/html') || Formatting::startsWith($mimetype, 'application/xhtml+xml')) {
try {
$embed_data = $this->getEmbed($remote_url->getRemoteUrl());
$embed_data['remoteurl_id'] = $remote_url->getId();
// Create attachment
$embed_data['attachment_id'] = $attachment->getId();
DB::persist(Entity\AttachmentEmbed::create($embed_data));
DB::flush();
} catch (Exception $e) {
Log::warning($e);
}
} catch (DuplicateFoundException) {
Log::warning("Strangely, an attachment_embed object exists for new file {$attachment->getID()}");
}
return Event::next;
}
/**
* Replace enclosure representation of an attachment with the data from embed
* Perform an oEmbed or OpenGraph lookup for the given $url.
*
* Some known hosts are whitelisted with API endpoints where we
* know they exist but autodiscovery data isn't available.
*
* Throws exceptions on failure.
*
* @param string $url
*
* @return array
*/
public function onAttachmentFileInfo(int $attachment_id, ?array &$enclosure)
public function getEmbed(string $url): array
{
Log::info('Checking for remote URL metadata for ' . $url);
try {
$embed = DB::findOneBy('attachment_embed', ['attachment_id' => $attachment_id]);
} catch (NotFoundException) {
return Event::next;
Log::info("Trying to find Embed data for {$url} with 'oscarotero/Embed'");
$embed = new LibEmbed();
$info = $embed->get($url);
$metadata['title'] = $info->title;
$metadata['description'] = $info->description;
$metadata['author_name'] = $info->authorName;
$metadata['author_url'] = (string) $info->authorUrl;
$metadata['provider_name'] = $info->providerName;
$metadata['provider_url'] = (string) $info->providerUrl;
if (!is_null($info->image)) {
$thumbnail_url = (string) $info->image;
} else {
$thumbnail_url = (string) $info->favicon;
}
// Check thumbnail URL validity
$metadata['thumbnail_url'] = $thumbnail_url;
} catch (Exception $e) {
Log::info("Failed to find Embed data for {$url} with 'oscarotero/Embed', got exception: " . $e->getMessage());
}
// We know about this attachment, so we 'own' it, but know
// that it doesn't have an image
if (!$embed->isImage()) {
$enclosure = null;
return Event::stop;
$metadata = self::normalize($metadata);
return $metadata;
}
/**
* Normalize fetched info.
*
* @param array $metadata
*
* @return array
*/
public static function normalize(array $metadata): array
{
if (isset($metadata['thumbnail_url'])) {
// sometimes sites serve the path, not the full URL, for images
// let's "be liberal in what you accept from others"!
// add protocol and host if the thumbnail_url starts with /
if ($metadata['thumbnail_url'][0] == '/') {
$thumbnail_url_parsed = parse_url($metadata['thumbnail_url']);
$metadata['thumbnail_url'] = "{$thumbnail_url_parsed['scheme']}://{$thumbnail_url_parsed['host']}{$metadata['url']}";
}
// Some wordpress opengraph implementations sometimes return a white blank image
// no need for us to save that!
if ($metadata['thumbnail_url'] == 'https://s0.wp.com/i/blank.jpg') {
$metadata['thumbnail_url'] = null;
}
}
$enclosure = [
'filepath' => $embed->getFilepath(),
'mimetype' => $embed->getMimetype(),
'title' => $embed->getTitle(),
'width' => $embed->getWidth(),
'height' => $embed->getHeight(),
'url' => $embed->getMediaUrl(),
];
return Event::stop;
return $metadata;
}
/**
* Show this attachment enhanced with the corresponding Embed data, if available
*
* @param array $vars
* @param array $res
*
* @return bool
*/
public function onViewRemoteAttachment(array $vars, array &$res): bool
public function onViewAttachmentText(array $vars, array &$res): bool
{
$attachment = $vars['attachment'];
try {
@@ -199,7 +260,7 @@ class Embed extends Plugin
} catch (NotFoundException) {
return Event::next;
}
if (is_null($embed) && empty($embed->getAuthorName()) && empty($embed->getProvider())) {
if (is_null($embed) && empty($embed->getAuthorName()) && empty($embed->getProviderName())) {
Log::debug('Embed doesn\'t have a representation for the attachment #' . $attachment->getId());
return Event::next;
}
@@ -225,12 +286,12 @@ class Embed extends Plugin
{% endif %}
</div>
{% endif %}
{% if embed.getProvider() is not null %}
{% if embed.getProviderName() is not null %}
<div class="fn vcard">
{% if embed.getProviderUrl() is null %}
<p>{{embed.getProvider()}}</p>
<p>{{embed.getProviderName()}}</p>
{% else %}
<a href="{{embed.getProviderUrl()}}" class="url">{{embed.getProvider()}}</a>
<a href="{{embed.getProviderUrl()}}" class="url">{{embed.getProviderName()}}</a>
{% endif %}
</div>
{% endif %}
@@ -253,20 +314,20 @@ END, ['embed' => $embed, 'attributes' => $attributes, 'attachment' => $attachmen
*
*
*/
protected function checkAllowlist(string $url): string | bool
protected function checkWhitelist(string $url): string | bool
{
if ($this->check_allowlist ?? false) {
if ($this->check_whitelist ?? false) {
return false; // indicates "no check made"
}
$host = parse_url($url, PHP_URL_HOST);
foreach ($this->domain_allowlist as $regex => $provider) {
foreach ($this->domain_whitelist as $regex => $provider) {
if (preg_match("/{$regex}/", $host)) {
return $provider; // we trust this source, return provider name
}
}
throw new ServerException(_m('Domain not in remote thumbnail source allowlist: {host}', ['host' => $host]));
throw new ServerException(_m('Domain not in remote thumbnail source whitelist: {host}', ['host' => $host]));
}
/**
@@ -299,8 +360,8 @@ END, ['embed' => $embed, 'attributes' => $attributes, 'attachment' => $attachmen
}
/**
* A private helper function that uses a HEAD request to check the mime type
* of a remote URL to see it it's an image.
* A private helper function that uses a HEAD request to check the mimetype
* of a remote URL to see if it's an image.
*
* @param mixed $url
* @param null|mixed $headers
@@ -327,7 +388,7 @@ END, ['embed' => $embed, 'attributes' => $attributes, 'attachment' => $attachmen
}
/**
* Validate that $imgData is a valid image, place it in it's folder and resize
* Validate that $imgData is a valid image, place it in its folder and resize
*
* @param $imgData - The image data to validate
* @param null|array $headers - The headers possible previous request to $url
@@ -377,7 +438,7 @@ END, ['embed' => $embed, 'attributes' => $attributes, 'attachment' => $attachmen
$width = $info[0];
$height = $info[1];
} else {
$this->checkAllowlist($media_url);
$this->checkWhitelist($media_url);
$head = HTTPClient::head($media_url);
$headers = $head->getHeaders();
$headers = array_change_key_case($headers, CASE_LOWER);
@@ -419,84 +480,23 @@ END, ['embed' => $embed, 'attributes' => $attributes, 'attachment' => $attachmen
}
/**
* Perform an oEmbed or OpenGraph lookup for the given $url.
* Event raised when GNU social polls the plugin for information about it.
* Adds this plugin's version information to $versions array
*
* Some known hosts are allowlisted with API endpoints where we
* know they exist but autodiscovery data isn't available.
* @param &$versions array inherited from parent
*
* Throws exceptions on failure.
*
* @param string $url
* @param Attachment $attachment
*
* @return array
* @return bool true hook value
*/
public function getEmbed(string $url, Attachment $attachment): array
public function onPluginVersion(array &$versions): bool
{
Log::info('Checking for remote URL metadata for ' . $url);
try {
Log::info("Trying to find Embed data for {$url} with 'oscarotero/Embed'");
$embed = new LibEmbed();
$info = $embed->get($url);
$metadata['title'] = $info->title;
$metadata['html'] = $info->description;
$metadata['author_name'] = $info->authorName;
$metadata['author_url'] = $info->authorUrl;
$metadata['provider_name'] = $info->providerName;
$metadata['provider_url'] = $info->providerUrl;
if (!is_null($info->image)) {
$image_url = (string) $info->image;
if (Formatting::startsWith($image_url, 'data')) {
// Inline image
$imgData = base64_decode(substr($info->image, stripos($info->image, 'base64,') + 7));
[$filepath, $width, $height, $original_name, $mimetype] = $this->validateAndWriteImage($imgData);
} else {
[$filepath, $width, $height, $original_name, $mimetype] = $this->fetchValidateWriteRemoteImage($attachment, $image_url);
}
$metadata['width'] = $width;
$metadata['height'] = $height;
$metadata['mimetype'] = $mimetype;
$metadata['media_url'] = $image_url;
$metadata['filename'] = Formatting::removePrefix($filepath, Common::config('storage', 'dir'));
}
} catch (Exception $e) {
Log::info("Failed to find Embed data for {$url} with 'oscarotero/Embed', got exception: " . $e->getMessage());
}
$metadata = self::normalize($metadata);
$attachment->setTitle($metadata['title']);
return $metadata;
}
/**
* Normalize fetched info.
*/
public static function normalize(array $data): array
{
if (isset($metadata['url'])) {
// sometimes sites serve the path, not the full URL, for images
// let's "be liberal in what you accept from others"!
// add protocol and host if the thumbnail_url starts with /
if ($metadata['url'][0] == '/') {
$thumbnail_url_parsed = parse_url($metadata['url']);
$metadata['url'] = "{$thumbnail_url_parsed['scheme']}://{$thumbnail_url_parsed['host']}{$metadata['url']}";
}
// Some wordpress opengraph implementations sometimes return a white blank image
// no need for us to save that!
if ($metadata['url'] == 'https://s0.wp.com/i/blank.jpg') {
$metadata['url'] = null;
}
if (!isset($data['width'])) {
$data['width'] = Common::config('plugin_embed', 'width');
$data['height'] = Common::config('plugin_embed', 'height');
}
}
return $data;
$versions[] = [
'name' => 'Embed',
'version' => $this->version(),
'author' => 'Mikael Nordfeldth, Hugo Sales, Diogo Peralta Cordeiro',
'homepage' => GNUSOCIAL_PROJECT_URL,
'description' => // TRANS: Plugin description.
_m('Plugin for using and representing oEmbed, OpenGraph and other data.'),
];
return Event::next;
}
}