<?php
ob_clean();
-list ($height, $imgarg) = explode('/', ltrim($Args, '/'), 2);
+list ($height, $imgpath) = explode('/', ltrim($Args, '/'), 2);
$width= 1000;
-$imgpath = "data/$imgarg";
+$imgpath = preg_replace('{^(?=[0-9]+/)}', 'data/', $imgpath, 1);
if (!file_exists($imgpath)) {
http_response_code(404);
- exit;
+ $imgpath = '404.png';
+ if (!file_exists($imgpath)) {
+ exit;
+ }
}
-$target = preg_replace("{^data/}", "thumb/$height/", $imgpath, 1);
+$target = "thumb/$height/$imgpath";
if (!file_exists($target)) {
+ try {
+ mkthumb($imgpath, $target, $width, $height);
+ }
+ catch (Exception $e) {
+ http_response_code($e->getCode() ?: 500);
+ $target = '500.png';
+ if (file_exists($target)) {
+ header("X-Error: ".$e->getMessage());
+ header('Content-type: '.mime_content_type($target));
+ readfile($target);
+ exit;
+ }
+ trigger_error("thumbnail creation failed: ".$e->getMessage(), E_USER_WARNING);
+ exit;
+ }
+}
+
+header('Content-type: '.mime_content_type($target));
+readfile($target);
+exit;
+
+function mkthumb($source, $target, $width, $height)
+{
@mkdir(dirname($target), 0777, TRUE);
+ return mkthumb_exec($source, $target, $width, $height);
+}
+function mkthumb_exec($source, $target, $width, $height)
+{
+ if (!function_exists('popen')) {
+ throw new Exception("exec disallowed on this server", 501);
+ }
$cmd = implode(' ', array_map('escapeshellarg', [
'convert',
'-trim',
'-resize', "${width}x${height}",
'-quality', '90%',
- $imgpath, $target
+ $source, $target
]));
$return = shell_exec("$cmd 2>&1");
if ($return) {
- http_response_code(500);
- trigger_error("thumbnail creation failed: $return", E_USER_WARNING);
- exit;
+ throw new Exception($return);
}
}
-
-header('Content-type: '.mime_content_type($target));
-readfile($target);
-exit;