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Commit | Line | Data |
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910592b4 | 1 | <?php |
95ebe737 | 2 | class Cache_Starred_Images extends Plugin implements IHandler { |
910592b4 AD |
3 | |
4 | private $host; | |
5 | private $cache_dir; | |
6 | ||
7 | function about() { | |
8 | return array(1.0, | |
88bf000f | 9 | "Automatically cache Starred articles' images and HTML5 video files", |
910592b4 AD |
10 | "fox", |
11 | true); | |
12 | } | |
13 | ||
95ebe737 AD |
14 | function csrf_ignore($method) { |
15 | return false; | |
16 | } | |
17 | ||
18 | function before($method) { | |
19 | return true; | |
20 | } | |
21 | ||
22 | function after() { | |
23 | return true; | |
24 | } | |
25 | ||
910592b4 AD |
26 | function init($host) { |
27 | $this->host = $host; | |
28 | ||
29 | $this->cache_dir = CACHE_DIR . "/starred-images/"; | |
30 | ||
31 | if (!is_dir($this->cache_dir)) { | |
32 | mkdir($this->cache_dir); | |
33 | } | |
34 | ||
35 | if (is_dir($this->cache_dir)) { | |
f5967cf8 AD |
36 | |
37 | if (!is_writable($this->cache_dir)) | |
38 | chmod($this->cache_dir, 0777); | |
910592b4 AD |
39 | |
40 | if (is_writable($this->cache_dir)) { | |
41 | $host->add_hook($host::HOOK_UPDATE_TASK, $this); | |
4e5ddeaf | 42 | $host->add_hook($host::HOOK_HOUSE_KEEPING, $this); |
910592b4 | 43 | $host->add_hook($host::HOOK_SANITIZE, $this); |
95ebe737 AD |
44 | $host->add_handler("public", "cache_starred_images_getimage", $this); |
45 | ||
910592b4 AD |
46 | } else { |
47 | user_error("Starred cache directory is not writable.", E_USER_WARNING); | |
48 | } | |
49 | ||
50 | } else { | |
51 | user_error("Unable to create starred cache directory.", E_USER_WARNING); | |
52 | } | |
53 | } | |
54 | ||
95ebe737 | 55 | function cache_starred_images_getimage() { |
ae3851b1 AD |
56 | ob_end_clean(); |
57 | ||
910592b4 AD |
58 | $hash = basename($_REQUEST["hash"]); |
59 | ||
60 | if ($hash) { | |
61 | ||
c203486e | 62 | $filename = $this->cache_dir . "/" . basename($hash); |
88bf000f | 63 | $is_video = strpos($filename, ".mp4") !== FALSE; |
910592b4 AD |
64 | |
65 | if (file_exists($filename)) { | |
c203486e AD |
66 | header("Content-Disposition: attachment; filename=\"$hash\""); |
67 | ||
910592b4 AD |
68 | /* See if we can use X-Sendfile */ |
69 | $xsendfile = false; | |
70 | if (function_exists('apache_get_modules') && | |
71 | array_search('mod_xsendfile', apache_get_modules())) | |
72 | $xsendfile = true; | |
73 | ||
74 | if ($xsendfile) { | |
75 | header("X-Sendfile: $filename"); | |
76 | header("Content-type: application/octet-stream"); | |
77 | header('Content-Disposition: attachment; filename="' . basename($filename) . '"'); | |
78 | } else { | |
88bf000f | 79 | header("Content-type: " . ($is_video ? "video/mp4" : "image/png")); |
910592b4 AD |
80 | $stamp = gmdate("D, d M Y H:i:s", filemtime($filename)). " GMT"; |
81 | header("Last-Modified: $stamp", true); | |
910592b4 AD |
82 | readfile($filename); |
83 | } | |
84 | } else { | |
85 | header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found"); | |
86 | echo "File not found."; | |
87 | } | |
88 | } | |
89 | } | |
90 | ||
4e5ddeaf | 91 | function hook_house_keeping() { |
88bf000f | 92 | $files = glob($this->cache_dir . "/*.{png,mp4}", GLOB_BRACE); |
4e5ddeaf AD |
93 | |
94 | $last_article_id = 0; | |
95 | $article_exists = 1; | |
96 | ||
97 | foreach ($files as $file) { | |
98 | list ($article_id, $hash) = explode("-", basename($file)); | |
99 | ||
100 | if ($article_id != $last_article_id) { | |
101 | $last_article_id = $article_id; | |
102 | $article_id = db_escape_string($article_id); | |
103 | ||
104 | $result = db_query("SELECT id FROM ttrss_entries WHERE id = " . $article_id); | |
105 | ||
106 | $article_exists = db_num_rows($result) > 0; | |
107 | } | |
108 | ||
109 | if (!$article_exists) { | |
110 | unlink($file); | |
111 | } | |
112 | } | |
113 | } | |
114 | ||
910592b4 AD |
115 | function hook_sanitize($doc, $site_url, $allowed_elements, $disallowed_attributes, $article_id) { |
116 | $xpath = new DOMXpath($doc); | |
117 | ||
118 | if ($article_id) { | |
88bf000f | 119 | $entries = $xpath->query('(//img[@src])|(//video/source[@src])'); |
910592b4 AD |
120 | |
121 | foreach ($entries as $entry) { | |
122 | if ($entry->hasAttribute('src')) { | |
123 | $src = rewrite_relative_url($site_url, $entry->getAttribute('src')); | |
124 | ||
88bf000f AD |
125 | $extension = $entry->tagName == 'source' ? '.mp4' : '.png'; |
126 | $local_filename = $this->cache_dir . $article_id . "-" . sha1($src) . $extension; | |
910592b4 AD |
127 | |
128 | if (file_exists($local_filename)) { | |
129 | $entry->setAttribute("src", get_self_url_prefix() . | |
95ebe737 | 130 | "/public.php?op=cache_starred_images_getimage&method=image&hash=" . |
88bf000f | 131 | $article_id . "-" . sha1($src) . $extension); |
910592b4 AD |
132 | } |
133 | ||
134 | } | |
135 | } | |
136 | } | |
137 | ||
138 | return $doc; | |
139 | } | |
140 | ||
141 | function hook_update_task() { | |
910592b4 AD |
142 | $result = db_query("SELECT content, ttrss_user_entries.owner_uid, link, site_url, ttrss_entries.id, plugin_data |
143 | FROM ttrss_entries, ttrss_user_entries LEFT JOIN ttrss_feeds ON | |
144 | (ttrss_user_entries.feed_id = ttrss_feeds.id) | |
145 | WHERE ref_id = ttrss_entries.id AND | |
146 | marked = true AND | |
88bf000f | 147 | (UPPER(content) LIKE '%<IMG%' OR UPPER(content) LIKE '%<VIDEO%') AND |
910592b4 AD |
148 | site_url != '' AND |
149 | plugin_data NOT LIKE '%starred_cache_images%' | |
150 | ORDER BY ".sql_random_function()." LIMIT 100"); | |
151 | ||
910592b4 AD |
152 | while ($line = db_fetch_assoc($result)) { |
153 | if ($line["site_url"]) { | |
154 | $success = $this->cache_article_images($line["content"], $line["site_url"], $line["owner_uid"], $line["id"]); | |
155 | ||
156 | if ($success) { | |
157 | $plugin_data = db_escape_string("starred_cache_images,${line['owner_uid']}:" . $line["plugin_data"]); | |
158 | ||
159 | db_query("UPDATE ttrss_entries SET plugin_data = '$plugin_data' WHERE id = " . $line["id"]); | |
160 | } | |
161 | } | |
162 | } | |
163 | } | |
164 | ||
165 | function cache_article_images($content, $site_url, $owner_uid, $article_id) { | |
166 | libxml_use_internal_errors(true); | |
167 | ||
168 | $charset_hack = '<head> | |
169 | <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> | |
170 | </head>'; | |
171 | ||
172 | $doc = new DOMDocument(); | |
173 | $doc->loadHTML($charset_hack . $content); | |
174 | $xpath = new DOMXPath($doc); | |
175 | ||
88bf000f | 176 | $entries = $xpath->query('(//img[@src])|(//video/source[@src])'); |
910592b4 AD |
177 | |
178 | $success = false; | |
179 | $has_images = false; | |
180 | ||
181 | foreach ($entries as $entry) { | |
88bf000f | 182 | |
910592b4 AD |
183 | if ($entry->hasAttribute('src')) { |
184 | $has_images = true; | |
185 | $src = rewrite_relative_url($site_url, $entry->getAttribute('src')); | |
186 | ||
88bf000f AD |
187 | $extension = $entry->tagName == 'source' ? '.mp4' : '.png'; |
188 | ||
189 | $local_filename = $this->cache_dir . $article_id . "-" . sha1($src) . $extension; | |
910592b4 AD |
190 | |
191 | //_debug("cache_images: downloading: $src to $local_filename"); | |
192 | ||
193 | if (!file_exists($local_filename)) { | |
194 | $file_content = fetch_file_contents($src); | |
195 | ||
196 | if ($file_content && strlen($file_content) > 0) { | |
197 | file_put_contents($local_filename, $file_content); | |
198 | $success = true; | |
199 | } | |
200 | } else { | |
201 | $success = true; | |
202 | } | |
203 | } | |
204 | } | |
205 | ||
206 | return $success || !$has_images; | |
207 | } | |
208 | ||
209 | function api_version() { | |
210 | return 2; | |
211 | } | |
212 | } | |
213 | ?> |