mirror of https://go.googlesource.com/go
588 lines
20 KiB
Go
588 lines
20 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package gzip
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import (
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"bytes"
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"compress/flate"
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"encoding/base64"
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"io"
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"os"
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"strings"
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"testing"
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"time"
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)
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type gunzipTest struct {
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name string
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desc string
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raw string
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gzip []byte
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err error
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}
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var gunzipTests = []gunzipTest{
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{ // has 1 empty fixed-huffman block
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"empty.txt",
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"empty.txt",
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"",
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[]byte{
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0x1f, 0x8b, 0x08, 0x08, 0xf7, 0x5e, 0x14, 0x4a,
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0x00, 0x03, 0x65, 0x6d, 0x70, 0x74, 0x79, 0x2e,
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0x74, 0x78, 0x74, 0x00, 0x03, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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},
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nil,
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},
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{
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"",
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"empty - with no file name",
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"",
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[]byte{
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0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88,
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0x00, 0xff, 0x01, 0x00, 0x00, 0xff, 0xff, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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},
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nil,
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},
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{ // has 1 non-empty fixed huffman block
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"hello.txt",
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"hello.txt",
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"hello world\n",
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[]byte{
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0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
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0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
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0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
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0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
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0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
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0x00, 0x00,
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},
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nil,
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},
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{ // concatenation
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"hello.txt",
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"hello.txt x2",
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"hello world\n" +
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"hello world\n",
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[]byte{
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0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
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0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
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0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
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0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
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0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
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0x00, 0x00,
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0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
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0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
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0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
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0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
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0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
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0x00, 0x00,
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},
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nil,
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},
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{ // has a fixed huffman block with some length-distance pairs
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"shesells.txt",
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"shesells.txt",
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"she sells seashells by the seashore\n",
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[]byte{
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0x1f, 0x8b, 0x08, 0x08, 0x72, 0x66, 0x8b, 0x4a,
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0x00, 0x03, 0x73, 0x68, 0x65, 0x73, 0x65, 0x6c,
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0x6c, 0x73, 0x2e, 0x74, 0x78, 0x74, 0x00, 0x2b,
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0xce, 0x48, 0x55, 0x28, 0x4e, 0xcd, 0xc9, 0x29,
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0x06, 0x92, 0x89, 0xc5, 0x19, 0x60, 0x56, 0x52,
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0xa5, 0x42, 0x09, 0x58, 0x18, 0x28, 0x90, 0x5f,
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0x94, 0xca, 0x05, 0x00, 0x76, 0xb0, 0x3b, 0xeb,
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0x24, 0x00, 0x00, 0x00,
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},
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nil,
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},
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{ // has dynamic huffman blocks
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"gettysburg",
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"gettysburg",
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" Four score and seven years ago our fathers brought forth on\n" +
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"this continent, a new nation, conceived in Liberty, and dedicated\n" +
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"to the proposition that all men are created equal.\n" +
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" Now we are engaged in a great Civil War, testing whether that\n" +
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"nation, or any nation so conceived and so dedicated, can long\n" +
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"endure.\n" +
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" We are met on a great battle-field of that war.\n" +
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" We have come to dedicate a portion of that field, as a final\n" +
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"resting place for those who here gave their lives that that\n" +
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"nation might live. It is altogether fitting and proper that\n" +
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"we should do this.\n" +
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" But, in a larger sense, we can not dedicate — we can not\n" +
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"consecrate — we can not hallow — this ground.\n" +
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" The brave men, living and dead, who struggled here, have\n" +
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"consecrated it, far above our poor power to add or detract.\n" +
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"The world will little note, nor long remember what we say here,\n" +
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"but it can never forget what they did here.\n" +
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" It is for us the living, rather, to be dedicated here to the\n" +
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"unfinished work which they who fought here have thus far so\n" +
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"nobly advanced. It is rather for us to be here dedicated to\n" +
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"the great task remaining before us — that from these honored\n" +
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"dead we take increased devotion to that cause for which they\n" +
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"gave the last full measure of devotion —\n" +
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" that we here highly resolve that these dead shall not have\n" +
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"died in vain — that this nation, under God, shall have a new\n" +
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"birth of freedom — and that government of the people, by the\n" +
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"people, for the people, shall not perish from this earth.\n" +
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"\n" +
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"Abraham Lincoln, November 19, 1863, Gettysburg, Pennsylvania\n",
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[]byte{
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0x1f, 0x8b, 0x08, 0x08, 0xd1, 0x12, 0x2b, 0x4a,
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0x00, 0x03, 0x67, 0x65, 0x74, 0x74, 0x79, 0x73,
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0x62, 0x75, 0x72, 0x67, 0x00, 0x65, 0x54, 0xcd,
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0x6e, 0xd4, 0x30, 0x10, 0xbe, 0xfb, 0x29, 0xe6,
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0x01, 0x42, 0xa5, 0x0a, 0x09, 0xc1, 0x11, 0x90,
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0x40, 0x48, 0xa8, 0xe2, 0x80, 0xd4, 0xf3, 0x24,
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0x9e, 0x24, 0x56, 0xbd, 0x9e, 0xc5, 0x76, 0x76,
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0x95, 0x1b, 0x0f, 0xc1, 0x13, 0xf2, 0x24, 0x7c,
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0x63, 0x77, 0x9b, 0x4a, 0x5c, 0xaa, 0x6e, 0x6c,
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0xcf, 0x7c, 0x7f, 0x33, 0x44, 0x5f, 0x74, 0xcb,
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0x54, 0x26, 0xcd, 0x42, 0x9c, 0x3c, 0x15, 0xb9,
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0x48, 0xa2, 0x5d, 0x38, 0x17, 0xe2, 0x45, 0xc9,
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0x4e, 0x67, 0xae, 0xab, 0xe0, 0xf7, 0x98, 0x75,
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0x5b, 0xd6, 0x4a, 0xb3, 0xe6, 0xba, 0x92, 0x26,
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0x57, 0xd7, 0x50, 0x68, 0xd2, 0x54, 0x43, 0x92,
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0x54, 0x07, 0x62, 0x4a, 0x72, 0xa5, 0xc4, 0x35,
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0x68, 0x1a, 0xec, 0x60, 0x92, 0x70, 0x11, 0x4f,
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0x21, 0xd1, 0xf7, 0x30, 0x4a, 0xae, 0xfb, 0xd0,
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0x9a, 0x78, 0xf1, 0x61, 0xe2, 0x2a, 0xde, 0x55,
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0x25, 0xd4, 0xa6, 0x73, 0xd6, 0xb3, 0x96, 0x60,
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0xef, 0xf0, 0x9b, 0x2b, 0x71, 0x8c, 0x74, 0x02,
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0x10, 0x06, 0xac, 0x29, 0x8b, 0xdd, 0x25, 0xf9,
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0xb5, 0x71, 0xbc, 0x73, 0x44, 0x0f, 0x7a, 0xa5,
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0xab, 0xb4, 0x33, 0x49, 0x0b, 0x2f, 0xbd, 0x03,
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0xd3, 0x62, 0x17, 0xe9, 0x73, 0xb8, 0x84, 0x48,
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0x8f, 0x9c, 0x07, 0xaa, 0x52, 0x00, 0x6d, 0xa1,
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0xeb, 0x2a, 0xc6, 0xa0, 0x95, 0x76, 0x37, 0x78,
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0x9a, 0x81, 0x65, 0x7f, 0x46, 0x4b, 0x45, 0x5f,
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0xe1, 0x6d, 0x42, 0xe8, 0x01, 0x13, 0x5c, 0x38,
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0x51, 0xd4, 0xb4, 0x38, 0x49, 0x7e, 0xcb, 0x62,
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0x28, 0x1e, 0x3b, 0x82, 0x93, 0x54, 0x48, 0xf1,
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0xd2, 0x7d, 0xe4, 0x5a, 0xa3, 0xbc, 0x99, 0x83,
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0x44, 0x4f, 0x3a, 0x77, 0x36, 0x57, 0xce, 0xcf,
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0x2f, 0x56, 0xbe, 0x80, 0x90, 0x9e, 0x84, 0xea,
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0x51, 0x1f, 0x8f, 0xcf, 0x90, 0xd4, 0x60, 0xdc,
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0x5e, 0xb4, 0xf7, 0x10, 0x0b, 0x26, 0xe0, 0xff,
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0xc4, 0xd1, 0xe5, 0x67, 0x2e, 0xe7, 0xc8, 0x93,
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0x98, 0x05, 0xb8, 0xa8, 0x45, 0xc0, 0x4d, 0x09,
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0xdc, 0x84, 0x16, 0x2b, 0x0d, 0x9a, 0x21, 0x53,
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0x04, 0x8b, 0xd2, 0x0b, 0xbd, 0xa2, 0x4c, 0xa7,
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0x60, 0xee, 0xd9, 0xe1, 0x1d, 0xd1, 0xb7, 0x4a,
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0x30, 0x8f, 0x63, 0xd5, 0xa5, 0x8b, 0x33, 0x87,
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0xda, 0x1a, 0x18, 0x79, 0xf3, 0xe3, 0xa6, 0x17,
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0x94, 0x2e, 0xab, 0x6e, 0xa0, 0xe3, 0xcd, 0xac,
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0x50, 0x8c, 0xca, 0xa7, 0x0d, 0x76, 0x37, 0xd1,
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0x23, 0xe7, 0x05, 0x57, 0x8b, 0xa4, 0x22, 0x83,
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0xd9, 0x62, 0x52, 0x25, 0xad, 0x07, 0xbb, 0xbf,
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0xbf, 0xff, 0xbc, 0xfa, 0xee, 0x20, 0x73, 0x91,
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0x29, 0xff, 0x7f, 0x02, 0x71, 0x62, 0x84, 0xb5,
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0xf6, 0xb5, 0x25, 0x6b, 0x41, 0xde, 0x92, 0xb7,
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0x76, 0x3f, 0x91, 0x91, 0x31, 0x1b, 0x41, 0x84,
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0x62, 0x30, 0x0a, 0x37, 0xa4, 0x5e, 0x18, 0x3a,
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0x99, 0x08, 0xa5, 0xe6, 0x6d, 0x59, 0x22, 0xec,
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0x33, 0x39, 0x86, 0x26, 0xf5, 0xab, 0x66, 0xc8,
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0x08, 0x20, 0xcf, 0x0c, 0xd7, 0x47, 0x45, 0x21,
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0x0b, 0xf6, 0x59, 0xd5, 0xfe, 0x5c, 0x8d, 0xaa,
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0x12, 0x7b, 0x6f, 0xa1, 0xf0, 0x52, 0x33, 0x4f,
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0xf5, 0xce, 0x59, 0xd3, 0xab, 0x66, 0x10, 0xbf,
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0x06, 0xc4, 0x31, 0x06, 0x73, 0xd6, 0x80, 0xa2,
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0x78, 0xc2, 0x45, 0xcb, 0x03, 0x65, 0x39, 0xc9,
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0x09, 0xd1, 0x06, 0x04, 0x33, 0x1a, 0x5a, 0xf1,
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0xde, 0x01, 0xb8, 0x71, 0x83, 0xc4, 0xb5, 0xb3,
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0xc3, 0x54, 0x65, 0x33, 0x0d, 0x5a, 0xf7, 0x9b,
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0x90, 0x7c, 0x27, 0x1f, 0x3a, 0x58, 0xa3, 0xd8,
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0xfd, 0x30, 0x5f, 0xb7, 0xd2, 0x66, 0xa2, 0x93,
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0x1c, 0x28, 0xb7, 0xe9, 0x1b, 0x0c, 0xe1, 0x28,
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0x47, 0x26, 0xbb, 0xe9, 0x7d, 0x7e, 0xdc, 0x96,
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0x10, 0x92, 0x50, 0x56, 0x7c, 0x06, 0xe2, 0x27,
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0xb4, 0x08, 0xd3, 0xda, 0x7b, 0x98, 0x34, 0x73,
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0x9f, 0xdb, 0xf6, 0x62, 0xed, 0x31, 0x41, 0x13,
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0xd3, 0xa2, 0xa8, 0x4b, 0x3a, 0xc6, 0x1d, 0xe4,
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0x2f, 0x8c, 0xf8, 0xfb, 0x97, 0x64, 0xf4, 0xb6,
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0x2f, 0x80, 0x5a, 0xf3, 0x56, 0xe0, 0x40, 0x50,
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0xd5, 0x19, 0xd0, 0x1e, 0xfc, 0xca, 0xe5, 0xc9,
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0xd4, 0x60, 0x00, 0x81, 0x2e, 0xa3, 0xcc, 0xb6,
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0x52, 0xf0, 0xb4, 0xdb, 0x69, 0x99, 0xce, 0x7a,
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0x32, 0x4c, 0x08, 0xed, 0xaa, 0x10, 0x10, 0xe3,
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0x6f, 0xee, 0x99, 0x68, 0x95, 0x9f, 0x04, 0x71,
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0xb2, 0x49, 0x2f, 0x62, 0xa6, 0x5e, 0xb4, 0xef,
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0x02, 0xed, 0x4f, 0x27, 0xde, 0x4a, 0x0f, 0xfd,
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0xc1, 0xcc, 0xdd, 0x02, 0x8f, 0x08, 0x16, 0x54,
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0xdf, 0xda, 0xca, 0xe0, 0x82, 0xf1, 0xb4, 0x31,
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0x7a, 0xa9, 0x81, 0xfe, 0x90, 0xb7, 0x3e, 0xdb,
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0xd3, 0x35, 0xc0, 0x20, 0x80, 0x33, 0x46, 0x4a,
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0x63, 0xab, 0xd1, 0x0d, 0x29, 0xd2, 0xe2, 0x84,
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0xb8, 0xdb, 0xfa, 0xe9, 0x89, 0x44, 0x86, 0x7c,
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0xe8, 0x0b, 0xe6, 0x02, 0x6a, 0x07, 0x9b, 0x96,
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0xd0, 0xdb, 0x2e, 0x41, 0x4c, 0xa1, 0xd5, 0x57,
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0x45, 0x14, 0xfb, 0xe3, 0xa6, 0x72, 0x5b, 0x87,
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0x6e, 0x0c, 0x6d, 0x5b, 0xce, 0xe0, 0x2f, 0xe2,
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0x21, 0x81, 0x95, 0xb0, 0xe8, 0xb6, 0x32, 0x0b,
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0xb2, 0x98, 0x13, 0x52, 0x5d, 0xfb, 0xec, 0x63,
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0x17, 0x8a, 0x9e, 0x23, 0x22, 0x36, 0xee, 0xcd,
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0xda, 0xdb, 0xcf, 0x3e, 0xf1, 0xc7, 0xf1, 0x01,
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0x12, 0x93, 0x0a, 0xeb, 0x6f, 0xf2, 0x02, 0x15,
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0x96, 0x77, 0x5d, 0xef, 0x9c, 0xfb, 0x88, 0x91,
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0x59, 0xf9, 0x84, 0xdd, 0x9b, 0x26, 0x8d, 0x80,
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0xf9, 0x80, 0x66, 0x2d, 0xac, 0xf7, 0x1f, 0x06,
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0xba, 0x7f, 0xff, 0xee, 0xed, 0x40, 0x5f, 0xa5,
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0xd6, 0xbd, 0x8c, 0x5b, 0x46, 0xd2, 0x7e, 0x48,
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0x4a, 0x65, 0x8f, 0x08, 0x42, 0x60, 0xf7, 0x0f,
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0xb9, 0x16, 0x0b, 0x0c, 0x1a, 0x06, 0x00, 0x00,
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},
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nil,
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},
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{ // has 1 non-empty fixed huffman block then garbage
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"hello.txt",
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"hello.txt + garbage",
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"hello world\n",
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[]byte{
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0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
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0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
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0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
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0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
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0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
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0x00, 0x00, 'g', 'a', 'r', 'b', 'a', 'g', 'e', '!', '!', '!',
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},
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ErrHeader,
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},
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{ // has 1 non-empty fixed huffman block not enough header
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"hello.txt",
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"hello.txt + garbage",
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"hello world\n",
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[]byte{
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0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
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0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
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0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
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0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
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0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
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0x00, 0x00, gzipID1,
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},
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io.ErrUnexpectedEOF,
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},
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{ // has 1 non-empty fixed huffman block but corrupt checksum
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"hello.txt",
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"hello.txt + corrupt checksum",
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"hello world\n",
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[]byte{
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0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,
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0x00, 0x03, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x2e,
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0x74, 0x78, 0x74, 0x00, 0xcb, 0x48, 0xcd, 0xc9,
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0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
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0x02, 0x00, 0xff, 0xff, 0xff, 0xff, 0x0c, 0x00,
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0x00, 0x00,
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},
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ErrChecksum,
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},
|
||
{ // 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)
|
||
}
|
||
}
|