* Name: Privacy Image Cache
* Version: 0.1
* Author: Tobias Hößl <https://github.com/CatoTH/>
+ * Status: Unsupported
*/
define("PRIVACY_IMAGE_CACHE_DEFAULT_TIME", 86400); // 1 Day
require_once('include/security.php');
+require_once("include/Photo.php");
function privacy_image_cache_install() {
- register_hook('bbcode', 'addon/privacy_image_cache/privacy_image_cache.php', 'privacy_image_cache_bbcode_hook');
+ register_hook('prepare_body', 'addon/privacy_image_cache/privacy_image_cache.php', 'privacy_image_cache_prepare_body_hook');
+ // register_hook('bbcode', 'addon/privacy_image_cache/privacy_image_cache.php', 'privacy_image_cache_bbcode_hook');
register_hook('display_item', 'addon/privacy_image_cache/privacy_image_cache.php', 'privacy_image_cache_display_item_hook');
register_hook('ping_xmlize', 'addon/privacy_image_cache/privacy_image_cache.php', 'privacy_image_cache_ping_xmlize_hook');
register_hook('cron', 'addon/privacy_image_cache/privacy_image_cache.php', 'privacy_image_cache_cron');
function privacy_image_cache_uninstall() {
+ unregister_hook('prepare_body', 'addon/privacy_image_cache/privacy_image_cache.php', 'privacy_image_cache_prepare_body_hook');
unregister_hook('bbcode', 'addon/privacy_image_cache/privacy_image_cache.php', 'privacy_image_cache_bbcode_hook');
unregister_hook('display_item', 'addon/privacy_image_cache/privacy_image_cache.php', 'privacy_image_cache_display_item_hook');
unregister_hook('ping_xmlize', 'addon/privacy_image_cache/privacy_image_cache.php', 'privacy_image_cache_ping_xmlize_hook');
function privacy_image_cache_module() {}
-
function privacy_image_cache_init() {
- $urlhash = 'pic:' . sha1($_REQUEST['url']);
- $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' LIMIT 1", $urlhash );
- if (count($r)) {
- $img_str = $r[0]['data'];
- }
- else {
- require_once("Photo.php");
-
- $img_str = fetch_url($_REQUEST['url'],true);
- $img = new Photo($img_str);
- if($img->is_valid()) {
- $img->store(0, 0, $urlhash, $_REQUEST['url'], '', 100);
- $img_str = $img->imageString();
- }
- }
+ global $a, $_SERVER;
+
+ // The code needs to be reworked, it is too complicated
+ //
+ // it is doing the following:
+ // 1. If a folder "privacy_image_cache" exists and is writeable, then use this for caching
+ // 2. If a cache path is defined, use this
+ // 3. If everything else failed, cache into the database
+
+ if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
+ header('HTTP/1.1 304 Not Modified');
+ header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
+ header('Etag: '.$_SERVER['HTTP_IF_NONE_MATCH']);
+ header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
+ header("Cache-Control: max-age=31536000");
+ if(function_exists('header_remove')) {
+ header_remove('Last-Modified');
+ header_remove('Expires');
+ header_remove('Cache-Control');
+ }
+ exit;
+ }
+
+ if(function_exists('header_remove')) {
+ header_remove('Pragma');
+ header_remove('pragma');
+ }
+
+ $thumb = false;
+ $size = 1024;
+
+ // If the cache path isn't there, try to create it
+ if (!is_dir($_SERVER["DOCUMENT_ROOT"]."/privacy_image_cache"))
+ if (is_writable($_SERVER["DOCUMENT_ROOT"]))
+ mkdir($_SERVER["DOCUMENT_ROOT"]."/privacy_image_cache");
+
+ // Checking if caching into a folder in the webroot is activated and working
+ $direct_cache = (is_dir($_SERVER["DOCUMENT_ROOT"]."/privacy_image_cache") AND is_writable($_SERVER["DOCUMENT_ROOT"]."/privacy_image_cache"));
+
+ // Look for filename in the arguments
+ if (isset($a->argv[1]) OR isset($a->argv[2]) OR isset($a->argv[3])) {
+ if (isset($a->argv[3]))
+ $url = $a->argv[3];
+ elseif (isset($a->argv[2]))
+ $url = $a->argv[2];
+ else
+ $url = $a->argv[1];
+
+ //$thumb = (isset($a->argv[3]) and ($a->argv[3] == "thumb"));
+ if (isset($a->argv[3]) and ($a->argv[3] == "thumb"))
+ $size = 200;
+
+ // thumb, small, medium and large.
+ if (substr($url, -6) == ":thumb")
+ $size = 150;
+ if (substr($url, -6) == ":small")
+ $size = 340;
+ if (substr($url, -7) == ":medium")
+ $size = 600;
+ if (substr($url, -6) == ":large")
+ $size = 1024;
+
+ $pos = strrpos($url, "=.");
+ if ($pos)
+ $url = substr($url, 0, $pos+1);
+
+ $url = str_replace(array(".jpg", ".jpeg", ".gif", ".png"), array("","","",""), $url);
+
+ $url = base64_decode(strtr($url, '-_', '+/'), true);
+
+ if ($url)
+ $_REQUEST['url'] = $url;
+ }
+
+ if (!$direct_cache) {
+ $urlhash = 'pic:' . sha1($_REQUEST['url']);
+ // Double encoded url - happens with Diaspora
+ $urlhash2 = 'pic:' . sha1(urldecode($_REQUEST['url']));
+
+ $cachefile = get_cachefile(hash("md5", $_REQUEST['url']));
+ if ($cachefile != '') {
+ if (file_exists($cachefile)) {
+ $img_str = file_get_contents($cachefile);
+ $mime = image_type_to_mime_type(exif_imagetype($cachefile));
+
+ header("Content-type: $mime");
+ header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
+ header('Etag: "'.md5($img_str).'"');
+ header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
+ header("Cache-Control: max-age=31536000");
+
+ // reduce quality - if it isn't a GIF
+ if ($mime != "image/gif") {
+ $img = new Photo($img_str, $mime);
+ if($img->is_valid()) {
+ $img_str = $img->imageString();
+ }
+ }
+
+ echo $img_str;
+ killme();
+ }
+ }
+ } else
+ $cachefile = "";
+
+ $valid = true;
+
+ if (!$direct_cache AND ($cachefile == "")) {
+ $r = q("SELECT * FROM `photo` WHERE `resource-id` in ('%s', '%s') LIMIT 1", $urlhash, $urlhash2);
+ if (count($r)) {
+ $img_str = $r[0]['data'];
+ $mime = $r[0]["desc"];
+ if ($mime == "") $mime = "image/jpeg";
+ }
+ } else
+ $r = array();
+
+ if (!count($r)) {
+ // It shouldn't happen but it does - spaces in URL
+ $_REQUEST['url'] = str_replace(" ", "+", $_REQUEST['url']);
+ $redirects = 0;
+ $img_str = fetch_url($_REQUEST['url'],true, $redirects, 10);
+
+ $tempfile = tempnam(get_temppath(), "cache");
+ file_put_contents($tempfile, $img_str);
+ $mime = image_type_to_mime_type(exif_imagetype($tempfile));
+ unlink($tempfile);
+
+ // If there is an error then return a blank image
+ if ((substr($a->get_curl_code(), 0, 1) == "4") or (!$img_str)) {
+ $img_str = file_get_contents("images/blank.png");
+ $mime = "image/png";
+ $cachefile = ""; // Clear the cachefile so that the dummy isn't stored
+ $valid = false;
+ $img = new Photo($img_str, "image/png");
+ if($img->is_valid()) {
+ $img->scaleImage(10);
+ $img_str = $img->imageString();
+ }
+ } else if (($mime != "image/jpeg") AND !$direct_cache AND ($cachefile == "")) {
+ $image = @imagecreatefromstring($img_str);
+
+ if($image === FALSE) die();
+
+ q("INSERT INTO `photo`
+ ( `uid`, `contact-id`, `guid`, `resource-id`, `created`, `edited`, `filename`, `album`, `height`, `width`, `desc`, `data`, `scale`, `profile`, `allow_cid`, `allow_gid`, `deny_cid`, `deny_gid` )
+ VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', '%s', %d, %d, '%s', '%s', '%s', '%s' )",
+ 0, 0, get_guid(), dbesc($urlhash),
+ dbesc(datetime_convert()),
+ dbesc(datetime_convert()),
+ dbesc(basename(dbesc($_REQUEST["url"]))),
+ dbesc(''),
+ intval(imagesy($image)),
+ intval(imagesx($image)),
+ $mime,
+ dbesc($img_str),
+ 100,
+ intval(0),
+ dbesc(''), dbesc(''), dbesc(''), dbesc('')
+ );
+
+ } else {
+ $img = new Photo($img_str, $mime);
+ if($img->is_valid()) {
+ if (!$direct_cache AND ($cachefile == ""))
+ $img->store(0, 0, $urlhash, $_REQUEST['url'], '', 100);
+
+ //if ($thumb) {
+ // $img->scaleImage(200); // Test
+ // $img_str = $img->imageString();
+ //}
+ }
+ //$mime = "image/jpeg";
+ }
+ }
+
+ // reduce quality - if it isn't a GIF
+ if ($mime != "image/gif") {
+ $img = new Photo($img_str, $mime);
+ if($img->is_valid()) {
+ //$img->scaleImage(1024); // Test
+ $img->scaleImage($size);
+ $img_str = $img->imageString();
+ }
+ }
+
+ // If there is a real existing directory then put the cache file there
+ // advantage: real file access is really fast
+ // Otherwise write in cachefile
+ if ($valid AND $direct_cache)
+ file_put_contents($_SERVER["DOCUMENT_ROOT"]."/privacy_image_cache/".privacy_image_cache_cachename($_REQUEST['url'], true), $img_str);
+ elseif ($cachefile != '')
+ file_put_contents($cachefile, $img_str);
+
+ header("Content-type: $mime");
+
+ // Only output the cache headers when the file is valid
+ if ($valid) {
+ header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
+ header('Etag: "'.md5($img_str).'"');
+ header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
+ header("Cache-Control: max-age=31536000");
+ }
+
+ echo $img_str;
+
+ killme();
+}
+
+function privacy_image_cache_cachename($url, $writemode = false) {
+ global $_SERVER;
+
+ $pos = strrpos($url, ".");
+ if ($pos) {
+ $extension = strtolower(substr($url, $pos+1));
+ $pos = strpos($extension, "?");
+ if ($pos)
+ $extension = substr($extension, 0, $pos);
+ }
+
+ $basepath = $_SERVER["DOCUMENT_ROOT"]."/privacy_image_cache";
+
+ $path = substr(hash("md5", $url), 0, 2);
+ if (is_dir($basepath) and $writemode)
+ if (!is_dir($basepath."/".$path)) {
+ mkdir($basepath."/".$path);
+ chmod($basepath."/".$path, 0777);
+ }
- header("Content-type: image/jpeg");
- header("Expires: " . gmdate("D, d M Y H:i:s", time() + (3600*24)) . " GMT");
- header("Cache-Control: max-age=" . (3600*24));
+ $path .= "/".strtr(base64_encode($url), '+/', '-_');
- echo $img_str;
+ $extensions = array("jpg", "jpeg", "gif", "png");
- killme();
+ if (in_array($extension, $extensions))
+ $path .= ".".$extension;
+
+ return($path);
}
/**
* @return boolean
*/
function privacy_image_cache_is_local_image($url) {
- if ($url[0] == '/') return true;
- $baseurl = get_app()->get_baseurl();
- return (substr($url, 0, strlen($baseurl)) == $baseurl);
+ if ($url[0] == '/') return true;
+
+ if (strtolower(substr($url, 0, 5)) == "data:") return true;
+
+ // Check if the cached path would be longer than 255 characters - apache doesn't like it
+ if (is_dir($_SERVER["DOCUMENT_ROOT"]."/privacy_image_cache")) {
+ $cachedurl = get_app()->get_baseurl()."/privacy_image_cache/". privacy_image_cache_cachename($url);
+ if (strlen($url) > 150)
+ return true;
+ }
+
+ // links normalised - bug #431
+ $baseurl = normalise_link(get_app()->get_baseurl());
+ $url = normalise_link($url);
+ return (substr($url, 0, strlen($baseurl)) == $baseurl);
}
/**
* @return string
*/
function privacy_image_cache_img_cb($matches) {
- if (privacy_image_cache_is_local_image($matches[2])) return $matches[2];
- return $matches[1] . "/privacy_image_cache/?url=" . escape_tags(addslashes($matches[2])) . $matches[3];
+
+ // if the picture seems to be from another picture cache then take the original source
+ $queryvar = privacy_image_cache_parse_query($matches[2]);
+ if (($queryvar['url'] != "") AND (substr($queryvar['url'], 0, 4) == "http"))
+ $matches[2] = urldecode($queryvar['url']);
+
+ // if fetching facebook pictures don't fetch the thumbnail but the big one
+ //if (((strpos($matches[2], ".fbcdn.net/") OR strpos($matches[2], "/fbcdn-photos-"))) and (substr($matches[2], -6) == "_s.jpg"))
+ // $matches[2] = substr($matches[2], 0, -6)."_n.jpg";
+
+ // following line changed per bug #431
+ if (privacy_image_cache_is_local_image($matches[2]))
+ return $matches[1] . $matches[2] . $matches[3];
+
+ //return $matches[1] . get_app()->get_baseurl() . "/privacy_image_cache/?url=" . addslashes(rawurlencode(htmlspecialchars_decode($matches[2]))) . $matches[3];
+
+ return $matches[1].get_app()->get_baseurl()."/privacy_image_cache/". privacy_image_cache_cachename(htmlspecialchars_decode($matches[2])).$matches[3];
+}
+
+/**
+ * @param App $a
+ * @param string $o
+ */
+function privacy_image_cache_prepare_body_hook(&$a, &$o) {
+ $o["html"] = preg_replace_callback("/(<img [^>]*src *= *[\"'])([^\"']+)([\"'][^>]*>)/siU", "privacy_image_cache_img_cb", $o["html"]);
}
/**
* @param App $a
* @param string $o
+ * Function disabled because the plugin moved
*/
function privacy_image_cache_bbcode_hook(&$a, &$o) {
- $o = preg_replace_callback("/(<img [^>]*src *= *[\"'])([^\"']+)([\"'][^>]*>)/siU", "privacy_image_cache_img_cb", $o);
+
//$o = preg_replace_callback("/(<img [^>]*src *= *[\"'])([^\"']+)([\"'][^>]*>)/siU", "privacy_image_cache_img_cb", $o);
}
function privacy_image_cache_display_item_hook(&$a, &$o) {
if (isset($o["output"])) {
if (isset($o["output"]["thumb"]) && !privacy_image_cache_is_local_image($o["output"]["thumb"]))
- $o["output"]["thumb"] = "/privacy_image_cache/?url=" . escape_tags(addslashes($o["output"]["thumb"]));
+ $o["output"]["thumb"] = $a->get_baseurl() . "/privacy_image_cache/".privacy_image_cache_cachename($o["output"]["thumb"]);
if (isset($o["output"]["author-avatar"]) && !privacy_image_cache_is_local_image($o["output"]["author-avatar"]))
- $o["output"]["author-avatar"] = "/privacy_image_cache/?url=" . escape_tags(addslashes($o["output"]["author-avatar"]));
+ $o["output"]["author-avatar"] = $a->get_baseurl() . "/privacy_image_cache/".privacy_image_cache_cachename($o["output"]["author-avatar"]);
+ if (isset($o["output"]["owner-avatar"]) && !privacy_image_cache_is_local_image($o["output"]["owner-avatar"]))
+ $o["output"]["owner-avatar"] = $a->get_baseurl() . "/privacy_image_cache/".privacy_image_cache_cachename($o["output"]["owner-avatar"]);
+ if (isset($o["output"]["owner_photo"]) && !privacy_image_cache_is_local_image($o["output"]["owner_photo"]))
+ $o["output"]["owner_photo"] = $a->get_baseurl() . "/privacy_image_cache/".privacy_image_cache_cachename($o["output"]["owner_photo"]);
}
}
* @param string $o
*/
function privacy_image_cache_ping_xmlize_hook(&$a, &$o) {
- if ($o["photo"] != "" && !privacy_image_cache_is_local_image($o["photo"]))
- $o["photo"] = "/privacy_image_cache/?url=" . escape_tags(addslashes($o["photo"]));
+ if ($o["photo"] != "" && !privacy_image_cache_is_local_image($o["photo"]))
+ $o["photo"] = $a->get_baseurl() . "/privacy_image_cache/".privacy_image_cache_cachename($o["photo"]);
+ //$o["photo"] = $a->get_baseurl() . "/privacy_image_cache/?url=" . escape_tags(addslashes(rawurlencode($o["photo"])));
}
logger("Purging old Cache of the Privacy Image Cache", LOGGER_DEBUG);
q('DELETE FROM `photo` WHERE `uid` = 0 AND `resource-id` LIKE "pic:%%" AND `created` < NOW() - INTERVAL %d SECOND', $cachetime);
- set_config('pi_cache', 'last_delete', $time);
-}
-
+ clear_cache($a->get_basepath(), $a->get_basepath()."/privacy_image_cache");
+ set_config('pi_cache', 'last_delete', $time);
+}
/**
* @param App $a
if (isset($_REQUEST['delete_all'])) {
q('DELETE FROM `photo` WHERE `uid` = 0 AND `resource-id` LIKE "pic:%%"');
}
-}
\ No newline at end of file
+}
+
+function privacy_image_cache_parse_query($var) {
+ /**
+ * Use this function to parse out the query array element from
+ * the output of parse_url().
+ */
+ $var = parse_url($var, PHP_URL_QUERY);
+ $var = html_entity_decode($var);
+ $var = explode('&', $var);
+ $arr = array();
+
+ foreach($var as $val) {
+ $x = explode('=', $val);
+ $arr[$x[0]] = $x[1];
+ }
+
+ unset($val, $x, $var);
+ return $arr;
+}
projects / friendica-addons.git / blobdiff