mirror of
https://git.friendi.ca/friendica/friendica-addons.git
synced 2024-11-19 03:43:41 +00:00
453 lines
16 KiB
PHP
453 lines
16 KiB
PHP
<?php
|
|
|
|
/**
|
|
* 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('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');
|
|
unregister_hook('cron', 'addon/privacy_image_cache/privacy_image_cache.php', 'privacy_image_cache_cron');
|
|
}
|
|
|
|
|
|
function privacy_image_cache_module() {}
|
|
|
|
function privacy_image_cache_init() {
|
|
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);
|
|
}
|
|
|
|
$path .= "/".strtr(base64_encode($url), '+/', '-_');
|
|
|
|
$extensions = array("jpg", "jpeg", "gif", "png");
|
|
|
|
if (in_array($extension, $extensions))
|
|
$path .= ".".$extension;
|
|
|
|
return($path);
|
|
}
|
|
|
|
/**
|
|
* @param $url string
|
|
* @return boolean
|
|
*/
|
|
function privacy_image_cache_is_local_image($url) {
|
|
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);
|
|
}
|
|
|
|
/**
|
|
* @param array $matches
|
|
* @return string
|
|
*/
|
|
function privacy_image_cache_img_cb($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 (($queryvar['url'] != "") AND (substr($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);
|
|
}
|
|
|
|
|
|
/**
|
|
* @param App $a
|
|
* @param string $o
|
|
*/
|
|
function privacy_image_cache_display_item_hook(&$a, &$o) {
|
|
if (isset($o["output"])) {
|
|
if (isset($o["output"]["thumb"]) && !privacy_image_cache_is_local_image($o["output"]["thumb"]))
|
|
$o["output"]["thumb"] = $a->get_baseurl() . "/privacy_image_cache/".privacy_image_cache_cachename($o["output"]["thumb"]);
|
|
if (isset($o["output"]["author-avatar"]) && !privacy_image_cache_is_local_image($o["output"]["author-avatar"]))
|
|
$o["output"]["author-avatar"] = $a->get_baseurl() . "/privacy_image_cache/".privacy_image_cache_cachename($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 App $a
|
|
* @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"] = $a->get_baseurl() . "/privacy_image_cache/".privacy_image_cache_cachename($o["photo"]);
|
|
//$o["photo"] = $a->get_baseurl() . "/privacy_image_cache/?url=" . escape_tags(addslashes(rawurlencode($o["photo"])));
|
|
}
|
|
|
|
|
|
/**
|
|
* @param App $a
|
|
* @param null|object $b
|
|
*/
|
|
function privacy_image_cache_cron(&$a = null, &$b = null) {
|
|
$cachetime = get_config('privacy_image_cache','cache_time');
|
|
if (!$cachetime) $cachetime = PRIVACY_IMAGE_CACHE_DEFAULT_TIME;
|
|
|
|
$last = get_config('pi_cache','last_delete');
|
|
$time = time();
|
|
if ($time < ($last + 3600)) return;
|
|
|
|
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', $cachetime);
|
|
|
|
clear_cache($a->get_basepath(), $a->get_basepath()."/privacy_image_cache");
|
|
|
|
set_config('pi_cache', 'last_delete', $time);
|
|
}
|
|
|
|
/**
|
|
* @param App $a
|
|
* @param null|object $o
|
|
*/
|
|
function privacy_image_cache_plugin_admin(&$a, &$o){
|
|
|
|
|
|
$o = '<input type="hidden" name="form_security_token" value="' . get_form_security_token("picsave") . '">';
|
|
|
|
$cachetime = get_config('privacy_image_cache','cache_time');
|
|
if (!$cachetime) $cachetime = PRIVACY_IMAGE_CACHE_DEFAULT_TIME;
|
|
$cachetime_h = Ceil($cachetime / 3600);
|
|
|
|
$o .= '<label for="pic_cachetime">' . t('Lifetime of the cache (in hours)') . '</label>
|
|
<input id="pic_cachetime" name="cachetime" type="text" value="' . escape_tags($cachetime_h) . '"><br style="clear: both;">';
|
|
|
|
$o .= '<input type="submit" name="save" value="' . t('Save') . '">';
|
|
|
|
$o .= '<h4>' . t('Cache Statistics') . '</h4>';
|
|
|
|
$num = q('SELECT COUNT(*) num, SUM(LENGTH(data)) size FROM `photo` WHERE `uid`=0 AND `contact-id`=0 AND `resource-id` LIKE "pic:%%"');
|
|
$o .= '<label for="statictics_num">' . t('Number of items') . '</label><input style="color: gray;" id="statistics_num" disabled value="' . escape_tags($num[0]['num']) . '"><br style="clear: both;">';
|
|
$size = Ceil($num[0]['size'] / (1024 * 1024));
|
|
$o .= '<label for="statictics_size">' . t('Size of the cache') . '</label><input style="color: gray;" id="statistics_size" disabled value="' . $size . ' MB"><br style="clear: both;">';
|
|
|
|
$o .= '<input type="submit" name="delete_all" value="' . t('Delete the whole cache') . '">';
|
|
}
|
|
|
|
|
|
/**
|
|
* @param App $a
|
|
* @param null|object $o
|
|
*/
|
|
function privacy_image_cache_plugin_admin_post(&$a = null, &$o = null){
|
|
check_form_security_token_redirectOnErr('/admin/plugins/privacy_image_cache', 'picsave');
|
|
|
|
if (isset($_REQUEST['save'])) {
|
|
$cachetime_h = IntVal($_REQUEST['cachetime']);
|
|
if ($cachetime_h < 1) $cachetime_h = 1;
|
|
set_config('privacy_image_cache','cache_time', $cachetime_h * 3600);
|
|
}
|
|
if (isset($_REQUEST['delete_all'])) {
|
|
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;
|
|
}
|