21 $result = explode(
',', $uri->path, 2);
26 list($metadata, $data) =
$result;
28 $metas = explode(
';', $metadata);
29 while(!empty($metas)) {
30 $cur = array_shift($metas);
31 if ($cur ==
'base64') {
35 if (substr($cur, 0, 8) ==
'charset=') {
38 if ($charset !== null)
continue;
39 $charset = substr($cur, 8);
41 if ($content_type !== null)
continue;
48 if ($content_type !== null && empty($this->allowed_types[$content_type])) {
51 if ($charset !== null) {
55 $data = rawurldecode($data);
57 $raw_data = base64_decode($data);
63 $file = tempnam(
"/tmp",
"");
64 file_put_contents(
$file, $raw_data);
65 if (function_exists(
'exif_imagetype')) {
66 $image_code = exif_imagetype(
$file);
67 } elseif (function_exists(
'getimagesize')) {
68 set_error_handler(array($this,
'muteErrorHandler'));
69 $info = getimagesize(
$file);
70 restore_error_handler();
71 if ($info ==
false)
return false;
72 $image_code = $info[2];
74 trigger_error(
"could not find exif_imagetype or getimagesize functions", E_USER_ERROR);
76 $real_content_type = image_type_to_mime_type($image_code);
77 if ($real_content_type != $content_type) {
80 if (empty($this->allowed_types[$real_content_type]))
return false;
81 $content_type = $real_content_type;
84 $uri->userinfo = null;
87 $uri->fragment = null;
89 $uri->path =
"$content_type;base64," . base64_encode($raw_data);