Bug #78083 [Ver]: exif_read_data() corrupt EXIF header: maximum directory nesting level reached
Edit report at https://bugs.php.net/bug.php?id=78083&edit=1
ID: 78083
Updated by: cmb@php.net
Reported by: fermin at ares dot uy
Summary: exif_read_data() corrupt EXIF header: maximum
directory nesting level reached
Status: Verified
Type: Bug
Package: EXIF related
Operating System: *
PHP Version: 7.3.5
Block user comment: N
Private report: N
New Comment:
That output looks actually good to me (besides that exiftool
supports way more tags than we do[1]).
[1] <https://exiftool.org/TagNames/EXIF.html>
Previous Comments:
------------------------------------------------------------------------
[2020-08-31 07:59:14] nikic@php.net
Or is that actually the expected output? I see that exiftool only prints an empty title as well.
------------------------------------------------------------------------
[2020-08-31 07:43:29] nikic@php.net
On current 7.3 HEAD the "maximum directory nesting level" warning no longer occurs, but
the output still seems to be corrupted: https://gist.github.com/nikic/4759bc05f118e0d4e59b54182c3da8f1
The "Title" is present, but probably filled with null bytes. There's a lot of
"UndefinedTag" going on as well.
------------------------------------------------------------------------
[2020-07-24 09:02:00] cmb@php.net
Indeed, that appears to be a bug â exiftool processes the image
just fine.
------------------------------------------------------------------------
[2019-05-29 16:53:39] fermin at ares dot uy
Description:
------------
When using the function "exif_read_data()" on certain jpg images it outputs this warning:
"Warning: exif_read_data(php7D62.tmp): corrupt EXIF header: maximum directory nesting level
reached in \path\to\index.php on line 4"
And the metadata field 'title' does not show up on the resulting array.
You can download a problematic image for testing here https://ares.uy/P1110193.JPG
Test script:
---------------
<?php
if (!empty($_FILES)) {
$imagen = $_FILES['imagen']['tmp_name'];
$metadata = exif_read_data($imagen, 0, true);
highlight_string("<?php\n\$metadata =\n" . var_export($metadata, true) .
";\n?>");
}
?>
<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<title>EXIF TEST</title>
</head>
<body>
<form action="/" method="post"
enctype="multipart/form-data">
<input type="file" name="imagen" value="">
<input type="submit" name="" value="Print EXIF">
</form>
</body>
</html>
Expected result:
----------------
No warning message and the complete list of metadata fields on the array outputted by the function
exif_read_data.
Actual result:
--------------
Warning message and incomplete metadata array.
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=78083&edit=1
Thread (8 messages)