| // Copyright 2009 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package gzip |
| |
| import ( |
| "bytes" |
| "compress/flate" |
| "encoding/base64" |
| "io" |
| "os" |
| "strings" |
| "testing" |
| "time" |
| ) |
| |
| type gunzipTest struct { |
| name string |
| desc string |
| raw string |
| gzip []byte |
| err error |
| } |
| |
| var gunzipTests = []gunzipTest{ |
| { // has 1 empty fixed-huffman block |
| "empty.txt", |
| "empty.txt", |
| "", |
| []byte{ |
| 0x1f, 0x8b, 0x08, 0x08, 0xf7, 0x5e, 0x14, 0x4a, |
| 0x00, 0x03, 0x65, 0x6d, 0x70, 0x74, 0x79, 0x2e, |
| 0x74, 0x78, 0x74, 0x00, 0x03, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| }, |
| nil, |
| }, |
| { |
| "", |
| "empty - with no file name", |
| "", |
| []byte{ |
| 0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, |
| 0x00, 0xff, 0x01, 0x00, 0x00, 0xff, 0xff, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| }, |
| nil, |
| }, |
| { // has 1 non-empty fixed huffman block |
| "hello.txt", |
| "hello.txt", |
| "hello world\n", |
| []byte{ |
| 0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a, |
| 0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e, |
| 0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9, |
| 0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1, |
| 0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00, |
| 0x00, 0x00, |
| }, |
| nil, |
| }, |
| { // concatenation |
| "hello.txt", |
| "hello.txt x2", |
| "hello world\n" + |
| "hello world\n", |
| []byte{ |
| 0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a, |
| 0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e, |
| 0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9, |
| 0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1, |
| 0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00, |
| 0x00, 0x00, |
| 0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a, |
| 0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e, |
| 0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9, |
| 0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1, |
| 0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00, |
| 0x00, 0x00, |
| }, |
| nil, |
| }, |
| { // has a fixed huffman block with some length-distance pairs |
| "shesells.txt", |
| "shesells.txt", |
| "she sells seashells by the seashore\n", |
| []byte{ |
| 0x1f, 0x8b, 0x08, 0x08, 0x72, 0x66, 0x8b, 0x4a, |
| 0x00, 0x03, 0x73, 0x68, 0x65, 0x73, 0x65, 0x6c, |
| 0x6c, 0x73, 0x2e, 0x74, 0x78, 0x74, 0x00, 0x2b, |
| 0xce, 0x48, 0x55, 0x28, 0x4e, 0xcd, 0xc9, 0x29, |
| 0x06, 0x92, 0x89, 0xc5, 0x19, 0x60, 0x56, 0x52, |
| 0xa5, 0x42, 0x09, 0x58, 0x18, 0x28, 0x90, 0x5f, |
| 0x94, 0xca, 0x05, 0x00, 0x76, 0xb0, 0x3b, 0xeb, |
| 0x24, 0x00, 0x00, 0x00, |
| }, |
| nil, |
| }, |
| { // has dynamic huffman blocks |
| "gettysburg", |
| "gettysburg", |
| " Four score and seven years ago our fathers brought forth on\n" + |
| "this continent, a new nation, conceived in Liberty, and dedicated\n" + |
| "to the proposition that all men are created equal.\n" + |
| " Now we are engaged in a great Civil War, testing whether that\n" + |
| "nation, or any nation so conceived and so dedicated, can long\n" + |
| "endure.\n" + |
| " We are met on a great battle-field of that war.\n" + |
| " We have come to dedicate a portion of that field, as a final\n" + |
| "resting place for those who here gave their lives that that\n" + |
| "nation might live. It is altogether fitting and proper that\n" + |
| "we should do this.\n" + |
| " But, in a larger sense, we can not dedicate — we can not\n" + |
| "consecrate — we can not hallow — this ground.\n" + |
| " The brave men, living and dead, who struggled here, have\n" + |
| "consecrated it, far above our poor power to add or detract.\n" + |
| "The world will little note, nor long remember what we say here,\n" + |
| "but it can never forget what they did here.\n" + |
| " It is for us the living, rather, to be dedicated here to the\n" + |
| "unfinished work which they who fought here have thus far so\n" + |
| "nobly advanced. It is rather for us to be here dedicated to\n" + |
| "the great task remaining before us — that from these honored\n" + |
| "dead we take increased devotion to that cause for which they\n" + |
| "gave the last full measure of devotion —\n" + |
| " that we here highly resolve that these dead shall not have\n" + |
| "died in vain — that this nation, under God, shall have a new\n" + |
| "birth of freedom — and that government of the people, by the\n" + |
| "people, for the people, shall not perish from this earth.\n" + |
| "\n" + |
| "Abraham Lincoln, November 19, 1863, Gettysburg, Pennsylvania\n", |
| []byte{ |
| 0x1f, 0x8b, 0x08, 0x08, 0xd1, 0x12, 0x2b, 0x4a, |
| 0x00, 0x03, 0x67, 0x65, 0x74, 0x74, 0x79, 0x73, |
| 0x62, 0x75, 0x72, 0x67, 0x00, 0x65, 0x54, 0xcd, |
| 0x6e, 0xd4, 0x30, 0x10, 0xbe, 0xfb, 0x29, 0xe6, |
| 0x01, 0x42, 0xa5, 0x0a, 0x09, 0xc1, 0x11, 0x90, |
| 0x40, 0x48, 0xa8, 0xe2, 0x80, 0xd4, 0xf3, 0x24, |
| 0x9e, 0x24, 0x56, 0xbd, 0x9e, 0xc5, 0x76, 0x76, |
| 0x95, 0x1b, 0x0f, 0xc1, 0x13, 0xf2, 0x24, 0x7c, |
| 0x63, 0x77, 0x9b, 0x4a, 0x5c, 0xaa, 0x6e, 0x6c, |
| 0xcf, 0x7c, 0x7f, 0x33, 0x44, 0x5f, 0x74, 0xcb, |
| 0x54, 0x26, 0xcd, 0x42, 0x9c, 0x3c, 0x15, 0xb9, |
| 0x48, 0xa2, 0x5d, 0x38, 0x17, 0xe2, 0x45, 0xc9, |
| 0x4e, 0x67, 0xae, 0xab, 0xe0, 0xf7, 0x98, 0x75, |
| 0x5b, 0xd6, 0x4a, 0xb3, 0xe6, 0xba, 0x92, 0x26, |
| 0x57, 0xd7, 0x50, 0x68, 0xd2, 0x54, 0x43, 0x92, |
| 0x54, 0x07, 0x62, 0x4a, 0x72, 0xa5, 0xc4, 0x35, |
| 0x68, 0x1a, 0xec, 0x60, 0x92, 0x70, 0x11, 0x4f, |
| 0x21, 0xd1, 0xf7, 0x30, 0x4a, 0xae, 0xfb, 0xd0, |
| 0x9a, 0x78, 0xf1, 0x61, 0xe2, 0x2a, 0xde, 0x55, |
| 0x25, 0xd4, 0xa6, 0x73, 0xd6, 0xb3, 0x96, 0x60, |
| 0xef, 0xf0, 0x9b, 0x2b, 0x71, 0x8c, 0x74, 0x02, |
| 0x10, 0x06, 0xac, 0x29, 0x8b, 0xdd, 0x25, 0xf9, |
| 0xb5, 0x71, 0xbc, 0x73, 0x44, 0x0f, 0x7a, 0xa5, |
| 0xab, 0xb4, 0x33, 0x49, 0x0b, 0x2f, 0xbd, 0x03, |
| 0xd3, 0x62, 0x17, 0xe9, 0x73, 0xb8, 0x84, 0x48, |
| 0x8f, 0x9c, 0x07, 0xaa, 0x52, 0x00, 0x6d, 0xa1, |
| 0xeb, 0x2a, 0xc6, 0xa0, 0x95, 0x76, 0x37, 0x78, |
| 0x9a, 0x81, 0x65, 0x7f, 0x46, 0x4b, 0x45, 0x5f, |
| 0xe1, 0x6d, 0x42, 0xe8, 0x01, 0x13, 0x5c, 0x38, |
| 0x51, 0xd4, 0xb4, 0x38, 0x49, 0x7e, 0xcb, 0x62, |
| 0x28, 0x1e, 0x3b, 0x82, 0x93, 0x54, 0x48, 0xf1, |
| 0xd2, 0x7d, 0xe4, 0x5a, 0xa3, 0xbc, 0x99, 0x83, |
| 0x44, 0x4f, 0x3a, 0x77, 0x36, 0x57, 0xce, 0xcf, |
| 0x2f, 0x56, 0xbe, 0x80, 0x90, 0x9e, 0x84, 0xea, |
| 0x51, 0x1f, 0x8f, 0xcf, 0x90, 0xd4, 0x60, 0xdc, |
| 0x5e, 0xb4, 0xf7, 0x10, 0x0b, 0x26, 0xe0, 0xff, |
| 0xc4, 0xd1, 0xe5, 0x67, 0x2e, 0xe7, 0xc8, 0x93, |
| 0x98, 0x05, 0xb8, 0xa8, 0x45, 0xc0, 0x4d, 0x09, |
| 0xdc, 0x84, 0x16, 0x2b, 0x0d, 0x9a, 0x21, 0x53, |
| 0x04, 0x8b, 0xd2, 0x0b, 0xbd, 0xa2, 0x4c, 0xa7, |
| 0x60, 0xee, 0xd9, 0xe1, 0x1d, 0xd1, 0xb7, 0x4a, |
| 0x30, 0x8f, 0x63, 0xd5, 0xa5, 0x8b, 0x33, 0x87, |
| 0xda, 0x1a, 0x18, 0x79, 0xf3, 0xe3, 0xa6, 0x17, |
| 0x94, 0x2e, 0xab, 0x6e, 0xa0, 0xe3, 0xcd, 0xac, |
| 0x50, 0x8c, 0xca, 0xa7, 0x0d, 0x76, 0x37, 0xd1, |
| 0x23, 0xe7, 0x05, 0x57, 0x8b, 0xa4, 0x22, 0x83, |
| 0xd9, 0x62, 0x52, 0x25, 0xad, 0x07, 0xbb, 0xbf, |
| 0xbf, 0xff, 0xbc, 0xfa, 0xee, 0x20, 0x73, 0x91, |
| 0x29, 0xff, 0x7f, 0x02, 0x71, 0x62, 0x84, 0xb5, |
| 0xf6, 0xb5, 0x25, 0x6b, 0x41, 0xde, 0x92, 0xb7, |
| 0x76, 0x3f, 0x91, 0x91, 0x31, 0x1b, 0x41, 0x84, |
| 0x62, 0x30, 0x0a, 0x37, 0xa4, 0x5e, 0x18, 0x3a, |
| 0x99, 0x08, 0xa5, 0xe6, 0x6d, 0x59, 0x22, 0xec, |
| 0x33, 0x39, 0x86, 0x26, 0xf5, 0xab, 0x66, 0xc8, |
| 0x08, 0x20, 0xcf, 0x0c, 0xd7, 0x47, 0x45, 0x21, |
| 0x0b, 0xf6, 0x59, 0xd5, 0xfe, 0x5c, 0x8d, 0xaa, |
| 0x12, 0x7b, 0x6f, 0xa1, 0xf0, 0x52, 0x33, 0x4f, |
| 0xf5, 0xce, 0x59, 0xd3, 0xab, 0x66, 0x10, 0xbf, |
| 0x06, 0xc4, 0x31, 0x06, 0x73, 0xd6, 0x80, 0xa2, |
| 0x78, 0xc2, 0x45, 0xcb, 0x03, 0x65, 0x39, 0xc9, |
| 0x09, 0xd1, 0x06, 0x04, 0x33, 0x1a, 0x5a, 0xf1, |
| 0xde, 0x01, 0xb8, 0x71, 0x83, 0xc4, 0xb5, 0xb3, |
| 0xc3, 0x54, 0x65, 0x33, 0x0d, 0x5a, 0xf7, 0x9b, |
| 0x90, 0x7c, 0x27, 0x1f, 0x3a, 0x58, 0xa3, 0xd8, |
| 0xfd, 0x30, 0x5f, 0xb7, 0xd2, 0x66, 0xa2, 0x93, |
| 0x1c, 0x28, 0xb7, 0xe9, 0x1b, 0x0c, 0xe1, 0x28, |
| 0x47, 0x26, 0xbb, 0xe9, 0x7d, 0x7e, 0xdc, 0x96, |
| 0x10, 0x92, 0x50, 0x56, 0x7c, 0x06, 0xe2, 0x27, |
| 0xb4, 0x08, 0xd3, 0xda, 0x7b, 0x98, 0x34, 0x73, |
| 0x9f, 0xdb, 0xf6, 0x62, 0xed, 0x31, 0x41, 0x13, |
| 0xd3, 0xa2, 0xa8, 0x4b, 0x3a, 0xc6, 0x1d, 0xe4, |
| 0x2f, 0x8c, 0xf8, 0xfb, 0x97, 0x64, 0xf4, 0xb6, |
| 0x2f, 0x80, 0x5a, 0xf3, 0x56, 0xe0, 0x40, 0x50, |
| 0xd5, 0x19, 0xd0, 0x1e, 0xfc, 0xca, 0xe5, 0xc9, |
| 0xd4, 0x60, 0x00, 0x81, 0x2e, 0xa3, 0xcc, 0xb6, |
| 0x52, 0xf0, 0xb4, 0xdb, 0x69, 0x99, 0xce, 0x7a, |
| 0x32, 0x4c, 0x08, 0xed, 0xaa, 0x10, 0x10, 0xe3, |
| 0x6f, 0xee, 0x99, 0x68, 0x95, 0x9f, 0x04, 0x71, |
| 0xb2, 0x49, 0x2f, 0x62, 0xa6, 0x5e, 0xb4, 0xef, |
| 0x02, 0xed, 0x4f, 0x27, 0xde, 0x4a, 0x0f, 0xfd, |
| 0xc1, 0xcc, 0xdd, 0x02, 0x8f, 0x08, 0x16, 0x54, |
| 0xdf, 0xda, 0xca, 0xe0, 0x82, 0xf1, 0xb4, 0x31, |
| 0x7a, 0xa9, 0x81, 0xfe, 0x90, 0xb7, 0x3e, 0xdb, |
| 0xd3, 0x35, 0xc0, 0x20, 0x80, 0x33, 0x46, 0x4a, |
| 0x63, 0xab, 0xd1, 0x0d, 0x29, 0xd2, 0xe2, 0x84, |
| 0xb8, 0xdb, 0xfa, 0xe9, 0x89, 0x44, 0x86, 0x7c, |
| 0xe8, 0x0b, 0xe6, 0x02, 0x6a, 0x07, 0x9b, 0x96, |
| 0xd0, 0xdb, 0x2e, 0x41, 0x4c, 0xa1, 0xd5, 0x57, |
| 0x45, 0x14, 0xfb, 0xe3, 0xa6, 0x72, 0x5b, 0x87, |
| 0x6e, 0x0c, 0x6d, 0x5b, 0xce, 0xe0, 0x2f, 0xe2, |
| 0x21, 0x81, 0x95, 0xb0, 0xe8, 0xb6, 0x32, 0x0b, |
| 0xb2, 0x98, 0x13, 0x52, 0x5d, 0xfb, 0xec, 0x63, |
| 0x17, 0x8a, 0x9e, 0x23, 0x22, 0x36, 0xee, 0xcd, |
| 0xda, 0xdb, 0xcf, 0x3e, 0xf1, 0xc7, 0xf1, 0x01, |
| 0x12, 0x93, 0x0a, 0xeb, 0x6f, 0xf2, 0x02, 0x15, |
| 0x96, 0x77, 0x5d, 0xef, 0x9c, 0xfb, 0x88, 0x91, |
| 0x59, 0xf9, 0x84, 0xdd, 0x9b, 0x26, 0x8d, 0x80, |
| 0xf9, 0x80, 0x66, 0x2d, 0xac, 0xf7, 0x1f, 0x06, |
| 0xba, 0x7f, 0xff, 0xee, 0xed, 0x40, 0x5f, 0xa5, |
| 0xd6, 0xbd, 0x8c, 0x5b, 0x46, 0xd2, 0x7e, 0x48, |
| 0x4a, 0x65, 0x8f, 0x08, 0x42, 0x60, 0xf7, 0x0f, |
| 0xb9, 0x16, 0x0b, 0x0c, 0x1a, 0x06, 0x00, 0x00, |
| }, |
| nil, |
| }, |
| { // has 1 non-empty fixed huffman block then garbage |
| "hello.txt", |
| "hello.txt + garbage", |
| "hello world\n", |
| []byte{ |
| 0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a, |
| 0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e, |
| 0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9, |
| 0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1, |
| 0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00, |
| 0x00, 0x00, 'g', 'a', 'r', 'b', 'a', 'g', 'e', '!', '!', '!', |
| }, |
| ErrHeader, |
| }, |
| { // has 1 non-empty fixed huffman block not enough header |
| "hello.txt", |
| "hello.txt + garbage", |
| "hello world\n", |
| []byte{ |
| 0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a, |
| 0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e, |
| 0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9, |
| 0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1, |
| 0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00, |
| 0x00, 0x00, gzipID1, |
| }, |
| io.ErrUnexpectedEOF, |
| }, |
| { // has 1 non-empty fixed huffman block but corrupt checksum |
| "hello.txt", |
| "hello.txt + corrupt checksum", |
| "hello world\n", |
| []byte{ |
| 0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a, |
| 0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e, |
| 0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9, |
| 0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1, |
| 0x02, 0x00, 0xff, 0xff, 0xff, 0xff, 0x0c, 0x00, |
| 0x00, 0x00, |
| }, |
| ErrChecksum, |
| }, |
| { // has 1 non-empty fixed huffman block but corrupt size |
| "hello.txt", |
| "hello.txt + corrupt size", |
| "hello world\n", |
| []byte{ |
| 0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a, |
| 0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e, |
| 0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9, |
| 0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1, |
| 0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0xff, 0x00, |
| 0x00, 0x00, |
| }, |
| ErrChecksum, |
| }, |
| { |
| "f1l3n4m3.tXt", |
| "header with all fields used", |
| "", |
| []byte{ |
| 0x1f, 0x8b, 0x08, 0x1e, 0x70, 0xf0, 0xf9, 0x4a, |
| 0x00, 0xaa, 0x09, 0x00, 0x7a, 0x7a, 0x05, 0x00, |
| 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x31, 0x6c, |
| 0x33, 0x6e, 0x34, 0x6d, 0x33, 0x2e, 0x74, 0x58, |
| 0x74, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, |
| 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, |
| 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, |
| 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, |
| 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, |
| 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, |
| 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, |
| 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, |
| 0x3f, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, |
| 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, |
| 0x4f, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, |
| 0x57, 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, |
| 0x5f, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, |
| 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, |
| 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, |
| 0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, |
| 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, |
| 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, |
| 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, |
| 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, |
| 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, |
| 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, |
| 0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, |
| 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, |
| 0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, |
| 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, |
| 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, |
| 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, |
| 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, |
| 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, |
| 0xef, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, |
| 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, |
| 0xff, 0x00, 0x92, 0xfd, 0x01, 0x00, 0x00, 0xff, |
| 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, |
| }, |
| nil, |
| }, |
| { |
| "", |
| "truncated gzip file amid raw-block", |
| "hello", |
| []byte{ |
| 0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, |
| 0x00, 0x0c, 0x00, 0xf3, 0xff, 0x68, 0x65, 0x6c, 0x6c, 0x6f, |
| }, |
| io.ErrUnexpectedEOF, |
| }, |
| { |
| "", |
| "truncated gzip file amid fixed-block", |
| "He", |
| []byte{ |
| 0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, |
| 0xf2, 0x48, 0xcd, |
| }, |
| io.ErrUnexpectedEOF, |
| }, |
| { |
| "hello.txt", |
| "gzip header with truncated name", |
| "hello world\n", |
| []byte{ |
| 0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a, |
| 0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e, |
| 0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9, |
| 0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1, |
| 0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00, |
| 0x00, 0x00, |
| 0x1f, 0x8b, 0x08, 0x08, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0xff, 0x01, |
| }, |
| io.ErrUnexpectedEOF, |
| }, |
| { |
| "", |
| "gzip header with truncated comment", |
| "hello world\n", |
| []byte{ |
| 0x1f, 0x8b, 0x08, 0x10, 0xc8, 0x58, 0x13, 0x4a, |
| 0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e, |
| 0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9, |
| 0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1, |
| 0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00, |
| 0x00, 0x00, |
| 0x1f, 0x8b, 0x08, 0x10, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0xff, 0x01, |
| }, |
| io.ErrUnexpectedEOF, |
| }, |
| } |
| |
| func TestDecompressor(t *testing.T) { |
| // Keep resetting this reader. |
| // It is intended behavior that Reader.Reset can be called on a zero-value |
| // Reader and be the equivalent as if NewReader was used instead. |
| r1 := new(Reader) |
| |
| b := new(bytes.Buffer) |
| for _, tt := range gunzipTests { |
| // Test NewReader. |
| in := bytes.NewReader(tt.gzip) |
| r2, err := NewReader(in) |
| if err != nil { |
| t.Errorf("%s: NewReader: %s", tt.desc, err) |
| continue |
| } |
| defer r2.Close() |
| if tt.name != r2.Name { |
| t.Errorf("%s: got name %s", tt.desc, r2.Name) |
| } |
| b.Reset() |
| n, err := io.Copy(b, r2) |
| if err != tt.err { |
| t.Errorf("%s: io.Copy: %v want %v", tt.desc, err, tt.err) |
| } |
| s := b.String() |
| if s != tt.raw { |
| t.Errorf("%s: got %d-byte %q want %d-byte %q", tt.desc, n, s, len(tt.raw), tt.raw) |
| } |
| |
| // Test Reader.Reset. |
| in = bytes.NewReader(tt.gzip) |
| err = r1.Reset(in) |
| if err != nil { |
| t.Errorf("%s: Reset: %s", tt.desc, err) |
| continue |
| } |
| if tt.name != r1.Name { |
| t.Errorf("%s: got name %s", tt.desc, r1.Name) |
| } |
| b.Reset() |
| n, err = io.Copy(b, r1) |
| if err != tt.err { |
| t.Errorf("%s: io.Copy: %v want %v", tt.desc, err, tt.err) |
| } |
| s = b.String() |
| if s != tt.raw { |
| t.Errorf("%s: got %d-byte %q want %d-byte %q", tt.desc, n, s, len(tt.raw), tt.raw) |
| } |
| } |
| } |
| |
| func TestIssue6550(t *testing.T) { |
| // Apple’s notarization service will recursively attempt to decompress |
| // files in order to find binaries to notarize. Since the service is |
| // unable to decompress this file, it may reject the entire toolchain. Use a |
| // base64-encoded version to avoid this. |
| // See golang.org/issue/34986 |
| f, err := os.Open("testdata/issue6550.gz.base64") |
| if err != nil { |
| t.Fatal(err) |
| } |
| gzip, err := NewReader(base64.NewDecoder(base64.StdEncoding, f)) |
| if err != nil { |
| t.Fatalf("NewReader(testdata/issue6550.gz): %v", err) |
| } |
| defer gzip.Close() |
| done := make(chan bool, 1) |
| go func() { |
| _, err := io.Copy(io.Discard, gzip) |
| if err == nil { |
| t.Errorf("Copy succeeded") |
| } else { |
| t.Logf("Copy failed (correctly): %v", err) |
| } |
| done <- true |
| }() |
| select { |
| case <-time.After(1 * time.Second): |
| t.Errorf("Copy hung") |
| case <-done: |
| // ok |
| } |
| } |
| |
| func TestMultistreamFalse(t *testing.T) { |
| // Find concatenation test. |
| var tt gunzipTest |
| for _, tt = range gunzipTests { |
| if strings.HasSuffix(tt.desc, " x2") { |
| goto Found |
| } |
| } |
| t.Fatal("cannot find hello.txt x2 in gunzip tests") |
| |
| Found: |
| br := bytes.NewReader(tt.gzip) |
| var r Reader |
| if err := r.Reset(br); err != nil { |
| t.Fatalf("first reset: %v", err) |
| } |
| |
| // Expect two streams with "hello world\n", then real EOF. |
| const hello = "hello world\n" |
| |
| r.Multistream(false) |
| data, err := io.ReadAll(&r) |
| if string(data) != hello || err != nil { |
| t.Fatalf("first stream = %q, %v, want %q, %v", string(data), err, hello, nil) |
| } |
| |
| if err := r.Reset(br); err != nil { |
| t.Fatalf("second reset: %v", err) |
| } |
| r.Multistream(false) |
| data, err = io.ReadAll(&r) |
| if string(data) != hello || err != nil { |
| t.Fatalf("second stream = %q, %v, want %q, %v", string(data), err, hello, nil) |
| } |
| |
| if err := r.Reset(br); err != io.EOF { |
| t.Fatalf("third reset: err=%v, want io.EOF", err) |
| } |
| } |
| |
| func TestNilStream(t *testing.T) { |
| // Go liberally interprets RFC 1952 section 2.2 to mean that a gzip file |
| // consist of zero or more members. Thus, we test that a nil stream is okay. |
| _, err := NewReader(bytes.NewReader(nil)) |
| if err != io.EOF { |
| t.Fatalf("NewReader(nil) on empty stream: got %v, want io.EOF", err) |
| } |
| } |
| |
| func TestTruncatedStreams(t *testing.T) { |
| cases := []struct { |
| name string |
| data []byte |
| }{ |
| { |
| name: "original", |
| data: []byte("\x1f\x8b\b\x04\x00\tn\x88\x00\xff\a\x00foo bar\xcbH\xcd\xc9\xc9\xd7Q(\xcf/\xcaI\x01\x04:r\xab\xff\f\x00\x00\x00"), |
| }, |
| { |
| name: "truncated name", |
| data: []byte{ |
| 0x1f, 0x8b, 0x08, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x01, |
| }, |
| }, |
| { |
| name: "truncated comment", |
| data: []byte{ |
| 0x1f, 0x8b, 0x08, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x01, |
| }, |
| }, |
| } |
| |
| // Intentionally iterate starting with at least one byte in the stream. |
| for _, tc := range cases { |
| for i := 1; i < len(tc.data); i++ { |
| r, err := NewReader(strings.NewReader(string(tc.data[:i]))) |
| if err != nil { |
| if err != io.ErrUnexpectedEOF { |
| t.Errorf("NewReader(%s-%d) on truncated stream: got %v, want %v", tc.name, i, err, io.ErrUnexpectedEOF) |
| } |
| continue |
| } |
| _, err = io.Copy(io.Discard, r) |
| if ferr, ok := err.(*flate.ReadError); ok { |
| err = ferr.Err |
| } |
| if err != io.ErrUnexpectedEOF { |
| t.Errorf("io.Copy(%s-%d) on truncated stream: got %v, want %v", tc.name, i, err, io.ErrUnexpectedEOF) |
| } |
| } |
| } |
| } |
| |
| func TestCVE202230631(t *testing.T) { |
| var empty = []byte{0x1f, 0x8b, 0x08, 0x00, 0xa7, 0x8f, 0x43, 0x62, 0x00, |
| 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} |
| r := bytes.NewReader(bytes.Repeat(empty, 4e6)) |
| z, err := NewReader(r) |
| if err != nil { |
| t.Fatalf("NewReader: got %v, want nil", err) |
| } |
| // Prior to CVE-2022-30631 fix, this would cause an unrecoverable panic due |
| // to stack exhaustion. |
| _, err = z.Read(make([]byte, 10)) |
| if err != io.EOF { |
| t.Errorf("Reader.Read: got %v, want %v", err, io.EOF) |
| } |
| } |
