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