331 lines
12 KiB
PHP
331 lines
12 KiB
PHP
<?php
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/**
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* Connects to an spee.ch style server to host assets via the LBRY Protocol
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*
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* Visit https://github.com/lbryio/spee.ch for more info
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*
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* @package LBRYPress
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*/
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class LBRY_Speech
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{
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/**
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* HTML Parser
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* @var LBRY_Speech_Parser
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*/
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private $parser = null;
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public function __construct()
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{
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add_action('save_post', array($this, 'upload_media'), 10, 2);
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if (!is_admin()) {
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$this->parser = new LBRY_Speech_Parser();
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add_filter('wp_calculate_image_srcset', array($this->parser, 'speech_image_srcset'), 10, 5);
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// Core filter for lots of image source calls
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add_filter('wp_get_attachment_image_src', array($this->parser, 'replace_attachment_image_src'), 10, 3);
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add_filter('the_content', array($this->parser, 'replace_urls_with_speech'));
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}
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}
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/**
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* Checks to see if we need to rewrite URLS, does if necessary
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*/
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public function maybe_rewrite_urls()
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{
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// See if we have a Spee.ch URL and if we are on the front-end
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$speech_url = get_option(LBRY_SETTINGS)[LBRY_SPEECH];
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if ($speech_url != '' && !is_admin()) {
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ob_start(array($this->parser, 'rewrite'));
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}
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}
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/**
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* Uploads assets to the speech server
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* @param int $post_id The ID of the post to
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* @return bool True if successful, false if not or if no Speech URL available
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*/
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// TODO: set up error reporting
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public function upload_media($post_id, $post)
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{
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// Only check post_type of Post
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if ('post' !== $post->post_type) {
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return;
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}
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// error_log('======================== START =====================');
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$speech_url = get_option(LBRY_SETTINGS)[LBRY_SPEECH];
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// Die if we don't have a spee.ch url
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if (!$speech_url || $speech_url === '') {
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return false;
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}
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$all_media = $this->find_media($post_id);
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// IDEA: Notify user if post save time will take a while, may be a concern for request timeouts
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if ($all_media) {
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// error_log(print_r($all_media, true));
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$requests = array();
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// Build all the Curl Requests
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foreach ($all_media as $media) {
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$params = array(
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'name' => $media->name,
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'file' => $media->file,
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'title' => $media->title,
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'type' => $media->type
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);
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// Pull Channel and Password from config file for now
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// COMBAK: This will change in the future
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if (LBRY_SPEECH_CHANNEL && LBRY_SPEECH_CHANNEL_PASSWORD) {
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$params['channelName'] = LBRY_SPEECH_CHANNEL;
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$params['channelPassword'] = LBRY_SPEECH_CHANNEL_PASSWORD;
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}
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$ch = $this->build_request('publish', $params);
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$requests[] = array(
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'request' => $ch,
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'media' => $media
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);
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}
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// Init the curl multi handle
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$mh = curl_multi_init();
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// Add each request to the multi handle
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foreach ($requests as $request) {
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curl_multi_add_handle($mh, $request['request']);
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}
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// error_log(print_r($requests, true));
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// Execute all requests simultaneously
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$running = null;
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do {
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curl_multi_exec($mh, $running);
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} while ($running);
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// Close the handles
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foreach ($requests as $request) {
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curl_multi_remove_handle($mh, $request['request']);
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}
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curl_multi_close($mh);
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// Run through responses, and upload meta as necessary
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foreach ($requests as $request) {
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$result = json_decode(curl_multi_getcontent($request['request']));
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$media = $request['media'];
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$response_code = curl_getinfo($request['request'], CURLINFO_RESPONSE_CODE);
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// error_log(print_r($result, true));
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try {
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// check we got a success code
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if ($response_code != '200') {
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if (!empty($result) && !$result->success && $result->message) {
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throw new \Exception("API Issue with message: " . $result->message);
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} else {
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throw new \Exception("Speech URL Connection Issue | Code: " . $response_code, 1);
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}
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}
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// Update image meta
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if ($result && $result->success) {
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// error_log(print_r($result, true));
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$meta = wp_get_attachment_metadata($media->id);
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if ($media->image_size) {
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$meta['sizes'][$media->image_size]['speech_asset_url'] = $result->data->serveUrl;
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} else {
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$meta['speech_asset_url'] = $result->data->serveUrl;
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}
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wp_update_attachment_metadata($media->id, $meta);
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// error_log(print_r($meta, true));
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} else { // Something unhandled happened here
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throw new \Exception("Unknown Speech Upload issue for asset");
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}
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} catch (\Exception $e) {
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$image_size = $media->image_size ? $media->image_size : 'full';
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error_log('Failed to upload asset with ID ' . $media->id . ' for size ' . $size . ' to supplied speech URL.');
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error_log($e->getMessage());
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}
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}
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}
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}
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/**
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* Finds all media attached to a post
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* @param int $post_id The post to search
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* @return array An array of Speech Media Objects
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*/
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protected function find_media($post_id)
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{
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$all_media = array();
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// Get content and put into a DOMDocument
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$content = get_post_field('post_content', $post_id);
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if (!$content) {
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return $all_media;
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}
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// Find all images
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preg_match_all('/<img [^>]+>/', $content, $images);
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// Only MP4 videos for now
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preg_match_all('/\[video.*mp4=".*".*\]/', $content, $videos);
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// Check to make sure we have results
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$images = empty($images[0]) ? array() : $images[0];
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$videos = empty($videos[0]) ? array() : $videos[0];
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// error_log(print_r($images, true));
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// error_log(print_r($videos, true));
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// TODO: only create media objects if hasn't been uploaded. IE check meta here
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// Throw each image into a media object
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foreach ($images as $image) {
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$attachment_id = null;
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// Looks for wp image class first, if not, pull id from source
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if (preg_match('/wp-image-([0-9]+)/i', $image, $class_id)) {
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$attachment_id = absint($class_id[1]);
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// error_log('found with wp-image: ' . $attachment_id);
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} elseif (preg_match('/src="((?:https?:)?\/\/[^"]+)"/', $image, $src) && $this->is_local($src[1])) {
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$attachment_id = $this->rigid_attachment_url_to_postid($src[1]);
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// error_log('found with url: ' . $attachment_id);
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}
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if ($attachment_id) {
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// Create main image media object
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$meta = wp_get_attachment_metadata($attachment_id);
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// error_log(print_r($meta, true));
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// If we don't have meta, get out because none of this will work
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if (!$meta) {
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break;
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}
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if (!$this->is_published($meta)) {
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$all_media[] = new LBRY_Speech_Media($attachment_id);
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}
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// COMBAK: find a way to make this more efficient?
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// Create a media object for each image size
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// Get images sizes for this attachment, as not all image sizes implemented
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$image_sizes = wp_get_attachment_metadata($attachment_id)['sizes'];
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foreach ($image_sizes as $size => $meta) {
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if (!$this->is_published($meta)) {
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$all_media[] = new LBRY_Speech_Media($attachment_id, array('image_size' => $size));
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}
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}
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}
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}
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// Parse video tags based on wordpress shortcode for local embedds
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foreach ($videos as $video) {
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$attachment_id = null;
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if (preg_match('/mp4="((?:https?:)?\/\/[^"]+)"/', $video, $src) && $this->is_local($src[1])) {
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$attachment_id = $this->rigid_attachment_url_to_postid($src[1]);
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if ($attachment_id) {
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$meta = wp_get_attachment_metadata($attachment_id);
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if (!$this->is_published($meta)) {
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$all_media[] = new LBRY_Speech_Media($attachment_id);
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}
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}
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}
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}
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return $all_media;
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}
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/**
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* Checks to see if a url is local to this installation
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* @param string $url
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* @return boolean
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*/
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private function is_local($url)
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{
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if (strpos($url, home_url()) !== false) {
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return true;
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}
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}
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/**
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* Checks array to see if a spee.ch url exists
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*/
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private function is_published($meta)
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{
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if (key_exists('speech_asset_url', $meta) && $meta['speech_asset_url'] !== '') {
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return true;
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}
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return false;
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}
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/**
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* Checks for image crop sizes and filters out query params
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* Courtesy of this post: http://bordoni.me/get-attachment-id-by-image-url/
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* @param string $url The url of the attachment you want an ID for
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* @return int The found post_id
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*/
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private function rigid_attachment_url_to_postid($url)
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{
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$scrubbed_url = strtok($url, '?'); // Clean up query params first
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$post_id = attachment_url_to_postid($scrubbed_url);
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if (! $post_id) {
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$dir = wp_upload_dir();
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$path = $scrubbed_url;
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if (0 === strpos($path, $dir['baseurl'] . '/')) {
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$path = substr($path, strlen($dir['baseurl'] . '/'));
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}
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if (preg_match('/^(.*)(\-\d*x\d*)(\.\w{1,})/i', $path, $matches)) {
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$url = $dir['baseurl'] . '/' . $matches[1] . $matches[3];
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$post_id = attachment_url_to_postid($url);
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}
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}
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return (int) $post_id;
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}
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/**
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* Builds a cURL request to the Speech URL
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* @param string $method The method to call on the Speech API
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* @param array $params The Parameters to send the Speech API Call
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* @return string The cURL object pointer
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*/
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private function build_request($method, $params = array())
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{
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$speech_url = get_option(LBRY_SETTINGS)[LBRY_SPEECH];
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// Die if no URL
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if (!$speech_url) {
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return false;
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}
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$address = $speech_url . '/api/claim/' . $method;
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// Send it via curl
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$ch = curl_init();
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curl_setopt($ch, CURLOPT_URL, $address);
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curl_setopt($ch, CURLOPT_POST, true);
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curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch, CURLOPT_AUTOREFERER, false);
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curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
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curl_setopt($ch, CURLOPT_SAFE_UPLOAD, true);
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curl_setopt($ch, CURLOPT_HEADER, false);
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return $ch;
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}
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}
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