xref: /PHP-7.3/ext/zlib/tests/bug75273.phpt (revision 90d86389)
1--TEST--
2Bug #75273 (php_zlib_inflate_filter() may not update bytes_consumed)
3--SKIPIF--
4<?php
5if (!extension_loaded('zlib')) die('skip zlib extension not available');
6?>
7--FILE--
8<?php
9function non_repeating_str($len = 8192) {
10	$ret = '';
11	mt_srand(1);
12	$iterations = (int) ($len / 256) + 1;
13	for ($i = 0; $i < $iterations; $i++) {
14		$haves = array();
15		$cnt = 0;
16		while ($cnt < 256) {
17			$j = mt_rand(0, 255);
18			if (!isset($haves[$j])) {
19				$haves[$j] = $j;
20				$cnt++;
21				$ret .= chr($j);
22			}
23		}
24	}
25	return substr($ret, 0, $len);
26}
27
28$base_len = 32768 - 23 /*overhead*/;
29
30$stream = fopen('php://memory', 'rb+');
31
32for ($i = 1; $i <= 8; $i++) {
33	$in_data = non_repeating_str($base_len + $i);
34
35	$deflate_filter = stream_filter_append($stream, 'zlib.deflate',  STREAM_FILTER_WRITE, ['window' => 16 + 15]);
36	rewind($stream);
37	fwrite($stream, $in_data);
38	stream_filter_remove($deflate_filter);
39
40	rewind($stream);
41	$out_data = stream_get_contents($stream);
42	$out_data_len = strlen($out_data);
43
44	$inflate_filter = stream_filter_prepend($stream, 'zlib.inflate',  STREAM_FILTER_WRITE, ['window' => 16 + 15]);
45	rewind($stream);
46	$fwrite_len = fwrite($stream, $out_data);
47	stream_filter_remove($inflate_filter);
48
49	if ($out_data_len !== $fwrite_len) {
50		echo "bug i=$i out_data_len=$out_data_len fwrite_len=$fwrite_len\n";
51	}
52}
53
54fclose($stream);
55?>
56===DONE===
57--EXPECT--
58===DONE===
59