define("PRIVACY_IMAGE_CACHE_DEFAULT_TIME", 86400); // 1 Day
require_once('include/security.php');
+require_once("Photo.php");
function privacy_image_cache_install() {
register_hook('prepare_body', 'addon/privacy_image_cache/privacy_image_cache.php', 'privacy_image_cache_prepare_body_hook');
function privacy_image_cache_module() {}
-
function privacy_image_cache_init() {
global $a, $_SERVER;
exit;
}
- if ($a->config["system"]["db_log"] != "")
- $stamp1 = microtime(true);
+ //if ($a->config["system"]["db_log"] != "")
+ // $stamp1 = microtime(true);
if(function_exists('header_remove')) {
header_remove('Pragma');
header_remove('pragma');
}
+ $thumb = false;
+
+ // Look for filename in the arguments
+ if (isset($a->argv[1]) OR isset($a->argv[2])) {
+ if (isset($a->argv[2]))
+ $url = $a->argv[2];
+ else
+ $url = $a->argv[1];
+
+ $pos = strrpos($url, "==.");
+ if ($pos)
+ $url = substr($url, 0, $pos+2);
+
+ $url = base64_decode(strtr($url, '-_', '+/'), true);
+ if ($url)
+ $_REQUEST['url'] = $url;
+
+ $thumb = (isset($a->argv[3]) and ($a->argv[3] == "thumb"));
+ }
+
$urlhash = 'pic:' . sha1($_REQUEST['url']);
// Double encoded url - happens with Diaspora
$urlhash2 = 'pic:' . sha1(urldecode($_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("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
header("Cache-Control: max-age=31536000");
+ $img = new Photo($img_str, $mime);
+ if($img->is_valid())
+ $img_str = $img->imageString();
+
echo $img_str;
- if ($a->config["system"]["db_log"] != "") {
- $stamp2 = microtime(true);
- $duration = round($stamp2-$stamp1, 3);
- if ($duration > $a->config["system"]["db_loglimit"])
- @file_put_contents($a->config["system"]["db_log"], $duration."\t".strlen($img_str)."\t".$_REQUEST['url']."\n", FILE_APPEND);
- }
+ if (is_dir($_SERVER["DOCUMENT_ROOT"]."/privacy_image_cache"))
+ file_put_contents($_SERVER["DOCUMENT_ROOT"]."/privacy_image_cache/".privacy_image_cache_cachename($_REQUEST['url'], true), $img_str);
killme();
}
}
- require_once("Photo.php");
+ $valid = true;
$r = q("SELECT * FROM `photo` WHERE `resource-id` in ('%s', '%s') LIMIT 1", $urlhash, $urlhash2);
if (count($r)) {
$mime = $r[0]["desc"];
if ($mime == "") $mime = "image/jpeg";
- // Test
- //if ($mime == "image/jpeg") {
- // $img = new Photo($img_str);
- // if($img->is_valid()) {
- // $img->scaleImage(1000);
- // $img_str = $img->imageString();
- // }
- //}
} else {
// It shouldn't happen but it does - spaces in URL
$_REQUEST['url'] = str_replace(" ", "+", $_REQUEST['url']);
- $img_str = fetch_url($_REQUEST['url'],true);
+ $redirects = 0;
+ $img_str = fetch_url($_REQUEST['url'],true, $redirects, 10);
- $tempfile = tempnam("", "cache");
+ $tempfile = tempnam(get_config("system","temppath"), "cache");
file_put_contents($tempfile, $img_str);
$mime = image_type_to_mime_type(exif_imagetype($tempfile));
unlink($tempfile);
if ((substr($a->get_curl_code(), 0, 1) == "4") or (!$img_str)) {
$img_str = file_get_contents("images/blank.png");
$mime = "image/png";
- //} else if (substr($img_str, 0, 6) == "GIF89a") {
+ $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") {
$image = @imagecreatefromstring($img_str);
);
} else {
- $img = new Photo($img_str);
+ $img = new Photo($img_str, $mime);
if($img->is_valid()) {
$img->store(0, 0, $urlhash, $_REQUEST['url'], '', 100);
- //$img->scaleImage(1000); // Test
+ if ($thumb)
+ $img->scaleImage(200); // Test
$img_str = $img->imageString();
}
- $mime = "image/jpeg";
+ //$mime = "image/jpeg";
}
}
- // Writing in cachefile
- // and (file_exists($cachefile)) and (exif_imagetype($cachefile) > 0))
- if ($cachefile != '')
+ $img = new Photo($img_str, $mime);
+ if($img->is_valid())
+ $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 is_dir($_SERVER["DOCUMENT_ROOT"]."/privacy_image_cache"))
+ file_put_contents($_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: $mime");
- //header("Last-Modified: Sat, 01 Apr 1999 12:23:42 GMT");
- header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
- header('Etag: "'.md5($img_str).'"');
- header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
- header("Cache-Control: max-age=31536000");
- echo $img_str;
-
- if ($a->config["system"]["db_log"] != "") {
- $stamp2 = microtime(true);
- $duration = round($stamp2-$stamp1, 3);
- if ($duration > $a->config["system"]["db_loglimit"])
- @file_put_contents($a->config["system"]["db_log"], $duration."\t".strlen($img_str)."\t".$_REQUEST['url']."\n", FILE_APPEND);
+ // Only output the cache headers when the file is valid
+ if ($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;
+
+ $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);
+ }
+
+ $path .= "/".strtr(base64_encode($url), '+/', '-_');
+
+ return($path);
+}
+
/**
* @param $url string
* @return boolean
*/
function privacy_image_cache_is_local_image($url) {
- if ($url[0] == '/') return true;
+ if ($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());
+ $baseurl = normalise_link(get_app()->get_baseurl());
$url = normalise_link($url);
- return (substr($url, 0, strlen($baseurl)) == $baseurl);
+ return (substr($url, 0, strlen($baseurl)) == $baseurl);
}
/**
* @return string
*/
function privacy_image_cache_img_cb($matches) {
+
+ // 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'] != "")
+ $matches[2] = urldecode($queryvar['url']);
+
+ // if fetching facebook pictures don't fetch the thumbnail but the big one
+ if (strpos($matches[2], ".fbcdn.net/") and (substr($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 $matches[1] . get_app()->get_baseurl() . "/privacy_image_cache/?url=" . addslashes(rawurlencode(htmlspecialchars_decode($matches[2]))) . $matches[3];
+
+ return $matches[1].get_app()->get_baseurl()."/privacy_image_cache/". privacy_image_cache_cachename(htmlspecialchars_decode($matches[2])).$matches[3];
}
/**
function privacy_image_cache_display_item_hook(&$a, &$o) {
if (isset($o["output"])) {
if (isset($o["output"]["thumb"]) && !privacy_image_cache_is_local_image($o["output"]["thumb"]))
- $o["output"]["thumb"] = $a->get_baseurl() . "/privacy_image_cache/?url=" . escape_tags(addslashes(rawurlencode($o["output"]["thumb"])));
+ $o["output"]["thumb"] = $a->get_baseurl() . "/privacy_image_cache/".privacy_image_cache_cachename($o["output"]["thumb"]);
+ //$o["output"]["thumb"] = $a->get_baseurl() . "/privacy_image_cache/?url=" . escape_tags(addslashes(rawurlencode($o["output"]["thumb"])));
if (isset($o["output"]["author-avatar"]) && !privacy_image_cache_is_local_image($o["output"]["author-avatar"]))
- $o["output"]["author-avatar"] = $a->get_baseurl() . "/privacy_image_cache/?url=" . escape_tags(addslashes(rawurlencode($o["output"]["author-avatar"])));
+ $o["output"]["author-avatar"] = $a->get_baseurl() . "/privacy_image_cache/".privacy_image_cache_cachename($o["output"]["author-avatar"]);
+ //$o["output"]["author-avatar"] = $a->get_baseurl() . "/privacy_image_cache/?url=" . escape_tags(addslashes(rawurlencode($o["output"]["author-avatar"])));
if (isset($o["output"]["owner-avatar"]) && !privacy_image_cache_is_local_image($o["output"]["owner-avatar"]))
- $o["output"]["owner-avatar"] = $a->get_baseurl() . "/privacy_image_cache/?url=" . escape_tags(addslashes(rawurlencode($o["output"]["owner-avatar"])));
+ $o["output"]["owner-avatar"] = $a->get_baseurl() . "/privacy_image_cache/".privacy_image_cache_cachename($o["output"]["owner-avatar"]);
+ //$o["output"]["owner-avatar"] = $a->get_baseurl() . "/privacy_image_cache/?url=" . escape_tags(addslashes(rawurlencode($o["output"]["owner-avatar"])));
}
}
*/
function privacy_image_cache_ping_xmlize_hook(&$a, &$o) {
if ($o["photo"] != "" && !privacy_image_cache_is_local_image($o["photo"]))
- $o["photo"] = $a->get_baseurl() . "/privacy_image_cache/?url=" . escape_tags(addslashes(rawurlencode($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 $a
q('DELETE FROM `photo` WHERE `uid` = 0 AND `resource-id` LIKE "pic:%%"');
}
}
+
+function privacy_image_cache_parse_query($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;
+}