xref: /PHP-8.1/ext/exif/tests/gh10834.phpt (revision 7b768485)
1--TEST--
2GH-10834 (exif_read_data() cannot read smaller stream wrapper chunk sizes)
3--EXTENSIONS--
4exif
5--FILE--
6<?php
7class VariableStream {
8	private $data;
9	private $position;
10	public $context;
11
12	function stream_close() {
13		return true;
14	}
15
16	function stream_eof() {
17		return $this->position >= strlen($this->data);
18	}
19
20	function stream_open($path, $mode, $options, &$opened_path) {
21		$this->position = 0;
22		$this->data = file_get_contents(__DIR__.'/bug50845.jpg');
23		return true;
24	}
25
26	function stream_seek($offset, $whence) {
27		switch ($whence) {
28			case SEEK_SET:
29				if ($offset < strlen($this->data) && $offset >= 0) {
30					$this->position = $offset;
31					return true;
32				} else {
33					return false;
34				}
35				break;
36			case SEEK_CUR:
37				if ($offset >= 0) {
38					$this->position += $offset;
39					return true;
40				} else {
41					return false;
42				}
43				break;
44			case SEEK_END:
45				if (strlen($this->data) + $offset >= 0) {
46					$this->position = strlen($this->data) + $offset;
47					return true;
48				} else {
49					return false;
50				}
51				break;
52			default:
53				return false;
54		}
55	}
56
57	function stream_read($count) {
58		$ret = substr($this->data, $this->position, $count);
59		$this->position += strlen($ret);
60		return $ret;
61	}
62
63	function stream_tell() {
64		return $this->position;
65	}
66}
67
68stream_wrapper_register('var', 'VariableStream');
69
70$fp = fopen('var://myvar', 'rb');
71
72stream_set_chunk_size($fp, 10);
73$headers = exif_read_data($fp);
74var_dump(is_array($headers));
75
76fclose($fp);
77?>
78--EXPECT--
79bool(true)
80