File size: 1,672 Bytes
1e94262 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | --TEST--
Bug #71263: fread() does not report bzip2.decompress errors
--EXTENSIONS--
bz2
--FILE--
<?php
function test($case) {
$plain = "The quick brown fox jumps over the lazy dog.";
$fn = "bug71263.bz2";
$compressed = (string) bzcompress($plain);
echo "Compressed len = ", strlen($compressed), "\n";
if ($case == 1) {
// Set a random byte in the middle of the compressed data
// --> php_bz2_decompress_filter() detects fatal error
// --> fread() displays empty string then garbage, no errors detected:
$compressed[strlen($compressed) - 15] = 'X';
} else if ($case == 2) {
// Truncate the compressed data
// --> php_bz2_decompress_filter() does not detect errors,
// --> fread() displays the empty string:
$compressed = substr($compressed, 0, strlen($compressed) - 20);
} else {
// Corrupted final CRC
// --> php_bz2_decompress_filter() detects fatal error
// --> fread() displays an empty string, then the correct plain text, no error detected:
$compressed[strlen($compressed)-2] = 'X';
}
file_put_contents($fn, $compressed);
$r = fopen($fn, "r");
stream_filter_append($r, 'bzip2.decompress', STREAM_FILTER_READ);
while (!feof($r)) {
$s = fread($r, 100);
echo "read: "; var_dump($s);
}
fclose($r);
unlink($fn);
}
test(1);
test(2);
test(3);
?>
--EXPECTF--
Compressed len = 81
Notice: fread(): bzip2 decompression failed in %s on line %d
read: bool(false)
Compressed len = 81
read: string(0) ""
Compressed len = 81
Notice: fread(): bzip2 decompression failed in %s on line %d
read: bool(false)
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