| // 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 tar |
| |
| import ( |
| "bytes" |
| "crypto/md5" |
| "errors" |
| "fmt" |
| "io" |
| "math" |
| "os" |
| "path" |
| "reflect" |
| "strconv" |
| "strings" |
| "testing" |
| "time" |
| ) |
| |
| func TestReader(t *testing.T) { |
| vectors := []struct { |
| file string // Test input file |
| headers []*Header // Expected output headers |
| chksums []string // MD5 checksum of files, leave as nil if not checked |
| err error // Expected error to occur |
| }{{ |
| file: "testdata/gnu.tar", |
| headers: []*Header{{ |
| Name: "small.txt", |
| Mode: 0640, |
| Uid: 73025, |
| Gid: 5000, |
| Size: 5, |
| ModTime: time.Unix(1244428340, 0), |
| Typeflag: '0', |
| Uname: "dsymonds", |
| Gname: "eng", |
| Format: FormatGNU, |
| }, { |
| Name: "small2.txt", |
| Mode: 0640, |
| Uid: 73025, |
| Gid: 5000, |
| Size: 11, |
| ModTime: time.Unix(1244436044, 0), |
| Typeflag: '0', |
| Uname: "dsymonds", |
| Gname: "eng", |
| Format: FormatGNU, |
| }}, |
| chksums: []string{ |
| "e38b27eaccb4391bdec553a7f3ae6b2f", |
| "c65bd2e50a56a2138bf1716f2fd56fe9", |
| }, |
| }, { |
| file: "testdata/sparse-formats.tar", |
| headers: []*Header{{ |
| Name: "sparse-gnu", |
| Mode: 420, |
| Uid: 1000, |
| Gid: 1000, |
| Size: 200, |
| ModTime: time.Unix(1392395740, 0), |
| Typeflag: 0x53, |
| Linkname: "", |
| Uname: "david", |
| Gname: "david", |
| Devmajor: 0, |
| Devminor: 0, |
| Format: FormatGNU, |
| }, { |
| Name: "sparse-posix-0.0", |
| Mode: 420, |
| Uid: 1000, |
| Gid: 1000, |
| Size: 200, |
| ModTime: time.Unix(1392342187, 0), |
| Typeflag: 0x30, |
| Linkname: "", |
| Uname: "david", |
| Gname: "david", |
| Devmajor: 0, |
| Devminor: 0, |
| PAXRecords: map[string]string{ |
| "GNU.sparse.size": "200", |
| "GNU.sparse.numblocks": "95", |
| "GNU.sparse.map": "1,1,3,1,5,1,7,1,9,1,11,1,13,1,15,1,17,1,19,1,21,1,23,1,25,1,27,1,29,1,31,1,33,1,35,1,37,1,39,1,41,1,43,1,45,1,47,1,49,1,51,1,53,1,55,1,57,1,59,1,61,1,63,1,65,1,67,1,69,1,71,1,73,1,75,1,77,1,79,1,81,1,83,1,85,1,87,1,89,1,91,1,93,1,95,1,97,1,99,1,101,1,103,1,105,1,107,1,109,1,111,1,113,1,115,1,117,1,119,1,121,1,123,1,125,1,127,1,129,1,131,1,133,1,135,1,137,1,139,1,141,1,143,1,145,1,147,1,149,1,151,1,153,1,155,1,157,1,159,1,161,1,163,1,165,1,167,1,169,1,171,1,173,1,175,1,177,1,179,1,181,1,183,1,185,1,187,1,189,1", |
| }, |
| Format: FormatPAX, |
| }, { |
| Name: "sparse-posix-0.1", |
| Mode: 420, |
| Uid: 1000, |
| Gid: 1000, |
| Size: 200, |
| ModTime: time.Unix(1392340456, 0), |
| Typeflag: 0x30, |
| Linkname: "", |
| Uname: "david", |
| Gname: "david", |
| Devmajor: 0, |
| Devminor: 0, |
| PAXRecords: map[string]string{ |
| "GNU.sparse.size": "200", |
| "GNU.sparse.numblocks": "95", |
| "GNU.sparse.map": "1,1,3,1,5,1,7,1,9,1,11,1,13,1,15,1,17,1,19,1,21,1,23,1,25,1,27,1,29,1,31,1,33,1,35,1,37,1,39,1,41,1,43,1,45,1,47,1,49,1,51,1,53,1,55,1,57,1,59,1,61,1,63,1,65,1,67,1,69,1,71,1,73,1,75,1,77,1,79,1,81,1,83,1,85,1,87,1,89,1,91,1,93,1,95,1,97,1,99,1,101,1,103,1,105,1,107,1,109,1,111,1,113,1,115,1,117,1,119,1,121,1,123,1,125,1,127,1,129,1,131,1,133,1,135,1,137,1,139,1,141,1,143,1,145,1,147,1,149,1,151,1,153,1,155,1,157,1,159,1,161,1,163,1,165,1,167,1,169,1,171,1,173,1,175,1,177,1,179,1,181,1,183,1,185,1,187,1,189,1", |
| "GNU.sparse.name": "sparse-posix-0.1", |
| }, |
| Format: FormatPAX, |
| }, { |
| Name: "sparse-posix-1.0", |
| Mode: 420, |
| Uid: 1000, |
| Gid: 1000, |
| Size: 200, |
| ModTime: time.Unix(1392337404, 0), |
| Typeflag: 0x30, |
| Linkname: "", |
| Uname: "david", |
| Gname: "david", |
| Devmajor: 0, |
| Devminor: 0, |
| PAXRecords: map[string]string{ |
| "GNU.sparse.major": "1", |
| "GNU.sparse.minor": "0", |
| "GNU.sparse.realsize": "200", |
| "GNU.sparse.name": "sparse-posix-1.0", |
| }, |
| Format: FormatPAX, |
| }, { |
| Name: "end", |
| Mode: 420, |
| Uid: 1000, |
| Gid: 1000, |
| Size: 4, |
| ModTime: time.Unix(1392398319, 0), |
| Typeflag: 0x30, |
| Linkname: "", |
| Uname: "david", |
| Gname: "david", |
| Devmajor: 0, |
| Devminor: 0, |
| Format: FormatGNU, |
| }}, |
| chksums: []string{ |
| "6f53234398c2449fe67c1812d993012f", |
| "6f53234398c2449fe67c1812d993012f", |
| "6f53234398c2449fe67c1812d993012f", |
| "6f53234398c2449fe67c1812d993012f", |
| "b0061974914468de549a2af8ced10316", |
| }, |
| }, { |
| file: "testdata/star.tar", |
| headers: []*Header{{ |
| Name: "small.txt", |
| Mode: 0640, |
| Uid: 73025, |
| Gid: 5000, |
| Size: 5, |
| ModTime: time.Unix(1244592783, 0), |
| Typeflag: '0', |
| Uname: "dsymonds", |
| Gname: "eng", |
| AccessTime: time.Unix(1244592783, 0), |
| ChangeTime: time.Unix(1244592783, 0), |
| }, { |
| Name: "small2.txt", |
| Mode: 0640, |
| Uid: 73025, |
| Gid: 5000, |
| Size: 11, |
| ModTime: time.Unix(1244592783, 0), |
| Typeflag: '0', |
| Uname: "dsymonds", |
| Gname: "eng", |
| AccessTime: time.Unix(1244592783, 0), |
| ChangeTime: time.Unix(1244592783, 0), |
| }}, |
| }, { |
| file: "testdata/v7.tar", |
| headers: []*Header{{ |
| Name: "small.txt", |
| Mode: 0444, |
| Uid: 73025, |
| Gid: 5000, |
| Size: 5, |
| ModTime: time.Unix(1244593104, 0), |
| Typeflag: '0', |
| }, { |
| Name: "small2.txt", |
| Mode: 0444, |
| Uid: 73025, |
| Gid: 5000, |
| Size: 11, |
| ModTime: time.Unix(1244593104, 0), |
| Typeflag: '0', |
| }}, |
| }, { |
| file: "testdata/pax.tar", |
| headers: []*Header{{ |
| Name: "a/123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100", |
| Mode: 0664, |
| Uid: 1000, |
| Gid: 1000, |
| Uname: "shane", |
| Gname: "shane", |
| Size: 7, |
| ModTime: time.Unix(1350244992, 23960108), |
| ChangeTime: time.Unix(1350244992, 23960108), |
| AccessTime: time.Unix(1350244992, 23960108), |
| Typeflag: TypeReg, |
| PAXRecords: map[string]string{ |
| "path": "a/123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100", |
| "mtime": "1350244992.023960108", |
| "atime": "1350244992.023960108", |
| "ctime": "1350244992.023960108", |
| }, |
| Format: FormatPAX, |
| }, { |
| Name: "a/b", |
| Mode: 0777, |
| Uid: 1000, |
| Gid: 1000, |
| Uname: "shane", |
| Gname: "shane", |
| Size: 0, |
| ModTime: time.Unix(1350266320, 910238425), |
| ChangeTime: time.Unix(1350266320, 910238425), |
| AccessTime: time.Unix(1350266320, 910238425), |
| Typeflag: TypeSymlink, |
| Linkname: "123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100", |
| PAXRecords: map[string]string{ |
| "linkpath": "123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100", |
| "mtime": "1350266320.910238425", |
| "atime": "1350266320.910238425", |
| "ctime": "1350266320.910238425", |
| }, |
| Format: FormatPAX, |
| }}, |
| }, { |
| file: "testdata/pax-bad-hdr-file.tar", |
| err: ErrHeader, |
| }, { |
| file: "testdata/pax-bad-mtime-file.tar", |
| err: ErrHeader, |
| }, { |
| file: "testdata/pax-pos-size-file.tar", |
| headers: []*Header{{ |
| Name: "foo", |
| Mode: 0640, |
| Uid: 319973, |
| Gid: 5000, |
| Size: 999, |
| ModTime: time.Unix(1442282516, 0), |
| Typeflag: '0', |
| Uname: "joetsai", |
| Gname: "eng", |
| PAXRecords: map[string]string{ |
| "size": "000000000000000000000999", |
| }, |
| Format: FormatPAX, |
| }}, |
| chksums: []string{ |
| "0afb597b283fe61b5d4879669a350556", |
| }, |
| }, { |
| file: "testdata/pax-records.tar", |
| headers: []*Header{{ |
| Typeflag: TypeReg, |
| Name: "file", |
| Uname: strings.Repeat("long", 10), |
| ModTime: time.Unix(0, 0), |
| PAXRecords: map[string]string{ |
| "GOLANG.pkg": "tar", |
| "comment": "Hello, 世界", |
| "uname": strings.Repeat("long", 10), |
| }, |
| Format: FormatPAX, |
| }}, |
| }, { |
| file: "testdata/pax-global-records.tar", |
| headers: []*Header{{ |
| Typeflag: TypeXGlobalHeader, |
| Name: "global1", |
| PAXRecords: map[string]string{"path": "global1", "mtime": "1500000000.0"}, |
| Format: FormatPAX, |
| }, { |
| Typeflag: TypeReg, |
| Name: "file1", |
| ModTime: time.Unix(0, 0), |
| Format: FormatUSTAR, |
| }, { |
| Typeflag: TypeReg, |
| Name: "file2", |
| PAXRecords: map[string]string{"path": "file2"}, |
| ModTime: time.Unix(0, 0), |
| Format: FormatPAX, |
| }, { |
| Typeflag: TypeXGlobalHeader, |
| Name: "GlobalHead.0.0", |
| PAXRecords: map[string]string{"path": ""}, |
| Format: FormatPAX, |
| }, { |
| Typeflag: TypeReg, |
| Name: "file3", |
| ModTime: time.Unix(0, 0), |
| Format: FormatUSTAR, |
| }, { |
| Typeflag: TypeReg, |
| Name: "file4", |
| ModTime: time.Unix(1400000000, 0), |
| PAXRecords: map[string]string{"mtime": "1400000000"}, |
| Format: FormatPAX, |
| }}, |
| }, { |
| file: "testdata/nil-uid.tar", // golang.org/issue/5290 |
| headers: []*Header{{ |
| Name: "P1050238.JPG.log", |
| Mode: 0664, |
| Uid: 0, |
| Gid: 0, |
| Size: 14, |
| ModTime: time.Unix(1365454838, 0), |
| Typeflag: TypeReg, |
| Linkname: "", |
| Uname: "eyefi", |
| Gname: "eyefi", |
| Devmajor: 0, |
| Devminor: 0, |
| Format: FormatGNU, |
| }}, |
| }, { |
| file: "testdata/xattrs.tar", |
| headers: []*Header{{ |
| Name: "small.txt", |
| Mode: 0644, |
| Uid: 1000, |
| Gid: 10, |
| Size: 5, |
| ModTime: time.Unix(1386065770, 448252320), |
| Typeflag: '0', |
| Uname: "alex", |
| Gname: "wheel", |
| AccessTime: time.Unix(1389782991, 419875220), |
| ChangeTime: time.Unix(1389782956, 794414986), |
| Xattrs: map[string]string{ |
| "user.key": "value", |
| "user.key2": "value2", |
| // Interestingly, selinux encodes the terminating null inside the xattr |
| "security.selinux": "unconfined_u:object_r:default_t:s0\x00", |
| }, |
| PAXRecords: map[string]string{ |
| "mtime": "1386065770.44825232", |
| "atime": "1389782991.41987522", |
| "ctime": "1389782956.794414986", |
| "SCHILY.xattr.user.key": "value", |
| "SCHILY.xattr.user.key2": "value2", |
| "SCHILY.xattr.security.selinux": "unconfined_u:object_r:default_t:s0\x00", |
| }, |
| Format: FormatPAX, |
| }, { |
| Name: "small2.txt", |
| Mode: 0644, |
| Uid: 1000, |
| Gid: 10, |
| Size: 11, |
| ModTime: time.Unix(1386065770, 449252304), |
| Typeflag: '0', |
| Uname: "alex", |
| Gname: "wheel", |
| AccessTime: time.Unix(1389782991, 419875220), |
| ChangeTime: time.Unix(1386065770, 449252304), |
| Xattrs: map[string]string{ |
| "security.selinux": "unconfined_u:object_r:default_t:s0\x00", |
| }, |
| PAXRecords: map[string]string{ |
| "mtime": "1386065770.449252304", |
| "atime": "1389782991.41987522", |
| "ctime": "1386065770.449252304", |
| "SCHILY.xattr.security.selinux": "unconfined_u:object_r:default_t:s0\x00", |
| }, |
| Format: FormatPAX, |
| }}, |
| }, { |
| // Matches the behavior of GNU, BSD, and STAR tar utilities. |
| file: "testdata/gnu-multi-hdrs.tar", |
| headers: []*Header{{ |
| Name: "GNU2/GNU2/long-path-name", |
| Linkname: "GNU4/GNU4/long-linkpath-name", |
| ModTime: time.Unix(0, 0), |
| Typeflag: '2', |
| Format: FormatGNU, |
| }}, |
| }, { |
| // GNU tar file with atime and ctime fields set. |
| // Created with the GNU tar v1.27.1. |
| // tar --incremental -S -cvf gnu-incremental.tar test2 |
| file: "testdata/gnu-incremental.tar", |
| headers: []*Header{{ |
| Name: "test2/", |
| Mode: 16877, |
| Uid: 1000, |
| Gid: 1000, |
| Size: 14, |
| ModTime: time.Unix(1441973427, 0), |
| Typeflag: 'D', |
| Uname: "rawr", |
| Gname: "dsnet", |
| AccessTime: time.Unix(1441974501, 0), |
| ChangeTime: time.Unix(1441973436, 0), |
| Format: FormatGNU, |
| }, { |
| Name: "test2/foo", |
| Mode: 33188, |
| Uid: 1000, |
| Gid: 1000, |
| Size: 64, |
| ModTime: time.Unix(1441973363, 0), |
| Typeflag: '0', |
| Uname: "rawr", |
| Gname: "dsnet", |
| AccessTime: time.Unix(1441974501, 0), |
| ChangeTime: time.Unix(1441973436, 0), |
| Format: FormatGNU, |
| }, { |
| Name: "test2/sparse", |
| Mode: 33188, |
| Uid: 1000, |
| Gid: 1000, |
| Size: 536870912, |
| ModTime: time.Unix(1441973427, 0), |
| Typeflag: 'S', |
| Uname: "rawr", |
| Gname: "dsnet", |
| AccessTime: time.Unix(1441991948, 0), |
| ChangeTime: time.Unix(1441973436, 0), |
| Format: FormatGNU, |
| }}, |
| }, { |
| // Matches the behavior of GNU and BSD tar utilities. |
| file: "testdata/pax-multi-hdrs.tar", |
| headers: []*Header{{ |
| Name: "bar", |
| Linkname: "PAX4/PAX4/long-linkpath-name", |
| ModTime: time.Unix(0, 0), |
| Typeflag: '2', |
| PAXRecords: map[string]string{ |
| "linkpath": "PAX4/PAX4/long-linkpath-name", |
| }, |
| Format: FormatPAX, |
| }}, |
| }, { |
| // Both BSD and GNU tar truncate long names at first NUL even |
| // if there is data following that NUL character. |
| // This is reasonable as GNU long names are C-strings. |
| file: "testdata/gnu-long-nul.tar", |
| headers: []*Header{{ |
| Name: "0123456789", |
| Mode: 0644, |
| Uid: 1000, |
| Gid: 1000, |
| ModTime: time.Unix(1486082191, 0), |
| Typeflag: '0', |
| Uname: "rawr", |
| Gname: "dsnet", |
| Format: FormatGNU, |
| }}, |
| }, { |
| // This archive was generated by Writer but is readable by both |
| // GNU and BSD tar utilities. |
| // The archive generated by GNU is nearly byte-for-byte identical |
| // to the Go version except the Go version sets a negative Devminor |
| // just to force the GNU format. |
| file: "testdata/gnu-utf8.tar", |
| headers: []*Header{{ |
| Name: "☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹☺☻☹", |
| Mode: 0644, |
| Uid: 1000, Gid: 1000, |
| ModTime: time.Unix(0, 0), |
| Typeflag: '0', |
| Uname: "☺", |
| Gname: "âš¹", |
| Format: FormatGNU, |
| }}, |
| }, { |
| // This archive was generated by Writer but is readable by both |
| // GNU and BSD tar utilities. |
| // The archive generated by GNU is nearly byte-for-byte identical |
| // to the Go version except the Go version sets a negative Devminor |
| // just to force the GNU format. |
| file: "testdata/gnu-not-utf8.tar", |
| headers: []*Header{{ |
| Name: "hi\x80\x81\x82\x83bye", |
| Mode: 0644, |
| Uid: 1000, |
| Gid: 1000, |
| ModTime: time.Unix(0, 0), |
| Typeflag: '0', |
| Uname: "rawr", |
| Gname: "dsnet", |
| Format: FormatGNU, |
| }}, |
| }, { |
| // BSD tar v3.1.2 and GNU tar v1.27.1 both rejects PAX records |
| // with NULs in the key. |
| file: "testdata/pax-nul-xattrs.tar", |
| err: ErrHeader, |
| }, { |
| // BSD tar v3.1.2 rejects a PAX path with NUL in the value, while |
| // GNU tar v1.27.1 simply truncates at first NUL. |
| // We emulate the behavior of BSD since it is strange doing NUL |
| // truncations since PAX records are length-prefix strings instead |
| // of NUL-terminated C-strings. |
| file: "testdata/pax-nul-path.tar", |
| err: ErrHeader, |
| }, { |
| file: "testdata/neg-size.tar", |
| err: ErrHeader, |
| }, { |
| file: "testdata/issue10968.tar", |
| err: ErrHeader, |
| }, { |
| file: "testdata/issue11169.tar", |
| err: ErrHeader, |
| }, { |
| file: "testdata/issue12435.tar", |
| err: ErrHeader, |
| }, { |
| // Ensure that we can read back the original Header as written with |
| // a buggy pre-Go1.8 tar.Writer. |
| file: "testdata/invalid-go17.tar", |
| headers: []*Header{{ |
| Name: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/foo", |
| Uid: 010000000, |
| ModTime: time.Unix(0, 0), |
| Typeflag: '0', |
| }}, |
| }, { |
| // USTAR archive with a regular entry with non-zero device numbers. |
| file: "testdata/ustar-file-devs.tar", |
| headers: []*Header{{ |
| Name: "file", |
| Mode: 0644, |
| Typeflag: '0', |
| ModTime: time.Unix(0, 0), |
| Devmajor: 1, |
| Devminor: 1, |
| Format: FormatUSTAR, |
| }}, |
| }, { |
| // Generated by Go, works on BSD tar v3.1.2 and GNU tar v.1.27.1. |
| file: "testdata/gnu-nil-sparse-data.tar", |
| headers: []*Header{{ |
| Name: "sparse.db", |
| Typeflag: TypeGNUSparse, |
| Size: 1000, |
| ModTime: time.Unix(0, 0), |
| Format: FormatGNU, |
| }}, |
| }, { |
| // Generated by Go, works on BSD tar v3.1.2 and GNU tar v.1.27.1. |
| file: "testdata/gnu-nil-sparse-hole.tar", |
| headers: []*Header{{ |
| Name: "sparse.db", |
| Typeflag: TypeGNUSparse, |
| Size: 1000, |
| ModTime: time.Unix(0, 0), |
| Format: FormatGNU, |
| }}, |
| }, { |
| // Generated by Go, works on BSD tar v3.1.2 and GNU tar v.1.27.1. |
| file: "testdata/pax-nil-sparse-data.tar", |
| headers: []*Header{{ |
| Name: "sparse.db", |
| Typeflag: TypeReg, |
| Size: 1000, |
| ModTime: time.Unix(0, 0), |
| PAXRecords: map[string]string{ |
| "size": "1512", |
| "GNU.sparse.major": "1", |
| "GNU.sparse.minor": "0", |
| "GNU.sparse.realsize": "1000", |
| "GNU.sparse.name": "sparse.db", |
| }, |
| Format: FormatPAX, |
| }}, |
| }, { |
| // Generated by Go, works on BSD tar v3.1.2 and GNU tar v.1.27.1. |
| file: "testdata/pax-nil-sparse-hole.tar", |
| headers: []*Header{{ |
| Name: "sparse.db", |
| Typeflag: TypeReg, |
| Size: 1000, |
| ModTime: time.Unix(0, 0), |
| PAXRecords: map[string]string{ |
| "size": "512", |
| "GNU.sparse.major": "1", |
| "GNU.sparse.minor": "0", |
| "GNU.sparse.realsize": "1000", |
| "GNU.sparse.name": "sparse.db", |
| }, |
| Format: FormatPAX, |
| }}, |
| }, { |
| file: "testdata/trailing-slash.tar", |
| headers: []*Header{{ |
| Typeflag: TypeDir, |
| Name: strings.Repeat("123456789/", 30), |
| ModTime: time.Unix(0, 0), |
| PAXRecords: map[string]string{ |
| "path": strings.Repeat("123456789/", 30), |
| }, |
| Format: FormatPAX, |
| }}, |
| }} |
| |
| for _, v := range vectors { |
| t.Run(path.Base(v.file), func(t *testing.T) { |
| f, err := os.Open(v.file) |
| if err != nil { |
| t.Fatalf("unexpected error: %v", err) |
| } |
| defer f.Close() |
| |
| // Capture all headers and checksums. |
| var ( |
| tr = NewReader(f) |
| hdrs []*Header |
| chksums []string |
| rdbuf = make([]byte, 8) |
| ) |
| for { |
| var hdr *Header |
| hdr, err = tr.Next() |
| if err != nil { |
| if err == io.EOF { |
| err = nil // Expected error |
| } |
| break |
| } |
| hdrs = append(hdrs, hdr) |
| |
| if v.chksums == nil { |
| continue |
| } |
| h := md5.New() |
| _, err = io.CopyBuffer(h, tr, rdbuf) // Effectively an incremental read |
| if err != nil { |
| break |
| } |
| chksums = append(chksums, fmt.Sprintf("%x", h.Sum(nil))) |
| } |
| |
| for i, hdr := range hdrs { |
| if i >= len(v.headers) { |
| t.Fatalf("entry %d: unexpected header:\ngot %+v", i, *hdr) |
| continue |
| } |
| if !reflect.DeepEqual(*hdr, *v.headers[i]) { |
| t.Fatalf("entry %d: incorrect header:\ngot %+v\nwant %+v", i, *hdr, *v.headers[i]) |
| } |
| } |
| if len(hdrs) != len(v.headers) { |
| t.Fatalf("got %d headers, want %d headers", len(hdrs), len(v.headers)) |
| } |
| |
| for i, sum := range chksums { |
| if i >= len(v.chksums) { |
| t.Fatalf("entry %d: unexpected sum: got %s", i, sum) |
| continue |
| } |
| if sum != v.chksums[i] { |
| t.Fatalf("entry %d: incorrect checksum: got %s, want %s", i, sum, v.chksums[i]) |
| } |
| } |
| |
| if err != v.err { |
| t.Fatalf("unexpected error: got %v, want %v", err, v.err) |
| } |
| f.Close() |
| }) |
| } |
| } |
| |
| func TestPartialRead(t *testing.T) { |
| type testCase struct { |
| cnt int // Number of bytes to read |
| output string // Expected value of string read |
| } |
| vectors := []struct { |
| file string |
| cases []testCase |
| }{{ |
| file: "testdata/gnu.tar", |
| cases: []testCase{ |
| {4, "Kilt"}, |
| {6, "Google"}, |
| }, |
| }, { |
| file: "testdata/sparse-formats.tar", |
| cases: []testCase{ |
| {2, "\x00G"}, |
| {4, "\x00G\x00o"}, |
| {6, "\x00G\x00o\x00G"}, |
| {8, "\x00G\x00o\x00G\x00o"}, |
| {4, "end\n"}, |
| }, |
| }} |
| |
| for _, v := range vectors { |
| t.Run(path.Base(v.file), func(t *testing.T) { |
| f, err := os.Open(v.file) |
| if err != nil { |
| t.Fatalf("Open() error: %v", err) |
| } |
| defer f.Close() |
| |
| tr := NewReader(f) |
| for i, tc := range v.cases { |
| hdr, err := tr.Next() |
| if err != nil || hdr == nil { |
| t.Fatalf("entry %d, Next(): got %v, want %v", i, err, nil) |
| } |
| buf := make([]byte, tc.cnt) |
| if _, err := io.ReadFull(tr, buf); err != nil { |
| t.Fatalf("entry %d, ReadFull(): got %v, want %v", i, err, nil) |
| } |
| if string(buf) != tc.output { |
| t.Fatalf("entry %d, ReadFull(): got %q, want %q", i, string(buf), tc.output) |
| } |
| } |
| |
| if _, err := tr.Next(); err != io.EOF { |
| t.Fatalf("Next(): got %v, want EOF", err) |
| } |
| }) |
| } |
| } |
| |
| func TestUninitializedRead(t *testing.T) { |
| f, err := os.Open("testdata/gnu.tar") |
| if err != nil { |
| t.Fatalf("Unexpected error: %v", err) |
| } |
| defer f.Close() |
| |
| tr := NewReader(f) |
| _, err = tr.Read([]byte{}) |
| if err == nil || err != io.EOF { |
| t.Errorf("Unexpected error: %v, wanted %v", err, io.EOF) |
| } |
| |
| } |
| |
| type reader struct{ io.Reader } |
| type readSeeker struct{ io.ReadSeeker } |
| type readBadSeeker struct{ io.ReadSeeker } |
| |
| func (rbs *readBadSeeker) Seek(int64, int) (int64, error) { return 0, fmt.Errorf("illegal seek") } |
| |
| // TestReadTruncation test the ending condition on various truncated files and |
| // that truncated files are still detected even if the underlying io.Reader |
| // satisfies io.Seeker. |
| func TestReadTruncation(t *testing.T) { |
| var ss []string |
| for _, p := range []string{ |
| "testdata/gnu.tar", |
| "testdata/ustar-file-reg.tar", |
| "testdata/pax-path-hdr.tar", |
| "testdata/sparse-formats.tar", |
| } { |
| buf, err := os.ReadFile(p) |
| if err != nil { |
| t.Fatalf("unexpected error: %v", err) |
| } |
| ss = append(ss, string(buf)) |
| } |
| |
| data1, data2, pax, sparse := ss[0], ss[1], ss[2], ss[3] |
| data2 += strings.Repeat("\x00", 10*512) |
| trash := strings.Repeat("garbage ", 64) // Exactly 512 bytes |
| |
| vectors := []struct { |
| input string // Input stream |
| cnt int // Expected number of headers read |
| err error // Expected error outcome |
| }{ |
| {"", 0, io.EOF}, // Empty file is a "valid" tar file |
| {data1[:511], 0, io.ErrUnexpectedEOF}, |
| {data1[:512], 1, io.ErrUnexpectedEOF}, |
| {data1[:1024], 1, io.EOF}, |
| {data1[:1536], 2, io.ErrUnexpectedEOF}, |
| {data1[:2048], 2, io.EOF}, |
| {data1, 2, io.EOF}, |
| {data1[:2048] + data2[:1536], 3, io.EOF}, |
| {data2[:511], 0, io.ErrUnexpectedEOF}, |
| {data2[:512], 1, io.ErrUnexpectedEOF}, |
| {data2[:1195], 1, io.ErrUnexpectedEOF}, |
| {data2[:1196], 1, io.EOF}, // Exact end of data and start of padding |
| {data2[:1200], 1, io.EOF}, |
| {data2[:1535], 1, io.EOF}, |
| {data2[:1536], 1, io.EOF}, // Exact end of padding |
| {data2[:1536] + trash[:1], 1, io.ErrUnexpectedEOF}, |
| {data2[:1536] + trash[:511], 1, io.ErrUnexpectedEOF}, |
| {data2[:1536] + trash, 1, ErrHeader}, |
| {data2[:2048], 1, io.EOF}, // Exactly 1 empty block |
| {data2[:2048] + trash[:1], 1, io.ErrUnexpectedEOF}, |
| {data2[:2048] + trash[:511], 1, io.ErrUnexpectedEOF}, |
| {data2[:2048] + trash, 1, ErrHeader}, |
| {data2[:2560], 1, io.EOF}, // Exactly 2 empty blocks (normal end-of-stream) |
| {data2[:2560] + trash[:1], 1, io.EOF}, |
| {data2[:2560] + trash[:511], 1, io.EOF}, |
| {data2[:2560] + trash, 1, io.EOF}, |
| {data2[:3072], 1, io.EOF}, |
| {pax, 0, io.EOF}, // PAX header without data is a "valid" tar file |
| {pax + trash[:1], 0, io.ErrUnexpectedEOF}, |
| {pax + trash[:511], 0, io.ErrUnexpectedEOF}, |
| {sparse[:511], 0, io.ErrUnexpectedEOF}, |
| {sparse[:512], 0, io.ErrUnexpectedEOF}, |
| {sparse[:3584], 1, io.EOF}, |
| {sparse[:9200], 1, io.EOF}, // Terminate in padding of sparse header |
| {sparse[:9216], 1, io.EOF}, |
| {sparse[:9728], 2, io.ErrUnexpectedEOF}, |
| {sparse[:10240], 2, io.EOF}, |
| {sparse[:11264], 2, io.ErrUnexpectedEOF}, |
| {sparse, 5, io.EOF}, |
| {sparse + trash, 5, io.EOF}, |
| } |
| |
| for i, v := range vectors { |
| for j := 0; j < 6; j++ { |
| var tr *Reader |
| var s1, s2 string |
| |
| switch j { |
| case 0: |
| tr = NewReader(&reader{strings.NewReader(v.input)}) |
| s1, s2 = "io.Reader", "auto" |
| case 1: |
| tr = NewReader(&reader{strings.NewReader(v.input)}) |
| s1, s2 = "io.Reader", "manual" |
| case 2: |
| tr = NewReader(&readSeeker{strings.NewReader(v.input)}) |
| s1, s2 = "io.ReadSeeker", "auto" |
| case 3: |
| tr = NewReader(&readSeeker{strings.NewReader(v.input)}) |
| s1, s2 = "io.ReadSeeker", "manual" |
| case 4: |
| tr = NewReader(&readBadSeeker{strings.NewReader(v.input)}) |
| s1, s2 = "ReadBadSeeker", "auto" |
| case 5: |
| tr = NewReader(&readBadSeeker{strings.NewReader(v.input)}) |
| s1, s2 = "ReadBadSeeker", "manual" |
| } |
| |
| var cnt int |
| var err error |
| for { |
| if _, err = tr.Next(); err != nil { |
| break |
| } |
| cnt++ |
| if s2 == "manual" { |
| if _, err = tr.writeTo(io.Discard); err != nil { |
| break |
| } |
| } |
| } |
| if err != v.err { |
| t.Errorf("test %d, NewReader(%s) with %s discard: got %v, want %v", |
| i, s1, s2, err, v.err) |
| } |
| if cnt != v.cnt { |
| t.Errorf("test %d, NewReader(%s) with %s discard: got %d headers, want %d headers", |
| i, s1, s2, cnt, v.cnt) |
| } |
| } |
| } |
| } |
| |
| // TestReadHeaderOnly tests that Reader does not attempt to read special |
| // header-only files. |
| func TestReadHeaderOnly(t *testing.T) { |
| f, err := os.Open("testdata/hdr-only.tar") |
| if err != nil { |
| t.Fatalf("unexpected error: %v", err) |
| } |
| defer f.Close() |
| |
| var hdrs []*Header |
| tr := NewReader(f) |
| for { |
| hdr, err := tr.Next() |
| if err == io.EOF { |
| break |
| } |
| if err != nil { |
| t.Errorf("Next(): got %v, want %v", err, nil) |
| continue |
| } |
| hdrs = append(hdrs, hdr) |
| |
| // If a special flag, we should read nothing. |
| cnt, _ := io.ReadFull(tr, []byte{0}) |
| if cnt > 0 && hdr.Typeflag != TypeReg { |
| t.Errorf("ReadFull(...): got %d bytes, want 0 bytes", cnt) |
| } |
| } |
| |
| // File is crafted with 16 entries. The later 8 are identical to the first |
| // 8 except that the size is set. |
| if len(hdrs) != 16 { |
| t.Fatalf("len(hdrs): got %d, want %d", len(hdrs), 16) |
| } |
| for i := 0; i < 8; i++ { |
| hdr1, hdr2 := hdrs[i+0], hdrs[i+8] |
| hdr1.Size, hdr2.Size = 0, 0 |
| if !reflect.DeepEqual(*hdr1, *hdr2) { |
| t.Errorf("incorrect header:\ngot %+v\nwant %+v", *hdr1, *hdr2) |
| } |
| } |
| } |
| |
| func TestMergePAX(t *testing.T) { |
| vectors := []struct { |
| in map[string]string |
| want *Header |
| ok bool |
| }{{ |
| in: map[string]string{ |
| "path": "a/b/c", |
| "uid": "1000", |
| "mtime": "1350244992.023960108", |
| }, |
| want: &Header{ |
| Name: "a/b/c", |
| Uid: 1000, |
| ModTime: time.Unix(1350244992, 23960108), |
| PAXRecords: map[string]string{ |
| "path": "a/b/c", |
| "uid": "1000", |
| "mtime": "1350244992.023960108", |
| }, |
| }, |
| ok: true, |
| }, { |
| in: map[string]string{ |
| "gid": "gtgergergersagersgers", |
| }, |
| ok: false, |
| }, { |
| in: map[string]string{ |
| "missing": "missing", |
| "SCHILY.xattr.key": "value", |
| }, |
| want: &Header{ |
| Xattrs: map[string]string{"key": "value"}, |
| PAXRecords: map[string]string{ |
| "missing": "missing", |
| "SCHILY.xattr.key": "value", |
| }, |
| }, |
| ok: true, |
| }} |
| |
| for i, v := range vectors { |
| got := new(Header) |
| err := mergePAX(got, v.in) |
| if v.ok && !reflect.DeepEqual(*got, *v.want) { |
| t.Errorf("test %d, mergePAX(...):\ngot %+v\nwant %+v", i, *got, *v.want) |
| } |
| if ok := err == nil; ok != v.ok { |
| t.Errorf("test %d, mergePAX(...): got %v, want %v", i, ok, v.ok) |
| } |
| } |
| } |
| |
| func TestParsePAX(t *testing.T) { |
| vectors := []struct { |
| in string |
| want map[string]string |
| ok bool |
| }{ |
| {"", nil, true}, |
| {"6 k=1\n", map[string]string{"k": "1"}, true}, |
| {"10 a=name\n", map[string]string{"a": "name"}, true}, |
| {"9 a=name\n", map[string]string{"a": "name"}, true}, |
| {"30 mtime=1350244992.023960108\n", map[string]string{"mtime": "1350244992.023960108"}, true}, |
| {"3 somelongkey=\n", nil, false}, |
| {"50 tooshort=\n", nil, false}, |
| {"13 key1=haha\n13 key2=nana\n13 key3=kaka\n", |
| map[string]string{"key1": "haha", "key2": "nana", "key3": "kaka"}, true}, |
| {"13 key1=val1\n13 key2=val2\n8 key1=\n", |
| map[string]string{"key1": "", "key2": "val2"}, true}, |
| {"22 GNU.sparse.size=10\n26 GNU.sparse.numblocks=2\n" + |
| "23 GNU.sparse.offset=1\n25 GNU.sparse.numbytes=2\n" + |
| "23 GNU.sparse.offset=3\n25 GNU.sparse.numbytes=4\n", |
| map[string]string{paxGNUSparseSize: "10", paxGNUSparseNumBlocks: "2", paxGNUSparseMap: "1,2,3,4"}, true}, |
| {"22 GNU.sparse.size=10\n26 GNU.sparse.numblocks=1\n" + |
| "25 GNU.sparse.numbytes=2\n23 GNU.sparse.offset=1\n", |
| nil, false}, |
| {"22 GNU.sparse.size=10\n26 GNU.sparse.numblocks=1\n" + |
| "25 GNU.sparse.offset=1,2\n25 GNU.sparse.numbytes=2\n", |
| nil, false}, |
| } |
| |
| for i, v := range vectors { |
| r := strings.NewReader(v.in) |
| got, err := parsePAX(r) |
| if !reflect.DeepEqual(got, v.want) && !(len(got) == 0 && len(v.want) == 0) { |
| t.Errorf("test %d, parsePAX():\ngot %v\nwant %v", i, got, v.want) |
| } |
| if ok := err == nil; ok != v.ok { |
| t.Errorf("test %d, parsePAX(): got %v, want %v", i, ok, v.ok) |
| } |
| } |
| } |
| |
| func TestReadOldGNUSparseMap(t *testing.T) { |
| populateSparseMap := func(sa sparseArray, sps []string) []string { |
| for i := 0; len(sps) > 0 && i < sa.MaxEntries(); i++ { |
| copy(sa.Entry(i), sps[0]) |
| sps = sps[1:] |
| } |
| if len(sps) > 0 { |
| copy(sa.IsExtended(), "\x80") |
| } |
| return sps |
| } |
| |
| makeInput := func(format Format, size string, sps ...string) (out []byte) { |
| // Write the initial GNU header. |
| var blk block |
| gnu := blk.GNU() |
| sparse := gnu.Sparse() |
| copy(gnu.RealSize(), size) |
| sps = populateSparseMap(sparse, sps) |
| if format != FormatUnknown { |
| blk.SetFormat(format) |
| } |
| out = append(out, blk[:]...) |
| |
| // Write extended sparse blocks. |
| for len(sps) > 0 { |
| var blk block |
| sps = populateSparseMap(blk.Sparse(), sps) |
| out = append(out, blk[:]...) |
| } |
| return out |
| } |
| |
| makeSparseStrings := func(sp []sparseEntry) (out []string) { |
| var f formatter |
| for _, s := range sp { |
| var b [24]byte |
| f.formatNumeric(b[:12], s.Offset) |
| f.formatNumeric(b[12:], s.Length) |
| out = append(out, string(b[:])) |
| } |
| return out |
| } |
| |
| vectors := []struct { |
| input []byte |
| wantMap sparseDatas |
| wantSize int64 |
| wantErr error |
| }{{ |
| input: makeInput(FormatUnknown, ""), |
| wantErr: ErrHeader, |
| }, { |
| input: makeInput(FormatGNU, "1234", "fewa"), |
| wantSize: 01234, |
| wantErr: ErrHeader, |
| }, { |
| input: makeInput(FormatGNU, "0031"), |
| wantSize: 031, |
| }, { |
| input: makeInput(FormatGNU, "80"), |
| wantErr: ErrHeader, |
| }, { |
| input: makeInput(FormatGNU, "1234", |
| makeSparseStrings(sparseDatas{{0, 0}, {1, 1}})...), |
| wantMap: sparseDatas{{0, 0}, {1, 1}}, |
| wantSize: 01234, |
| }, { |
| input: makeInput(FormatGNU, "1234", |
| append(makeSparseStrings(sparseDatas{{0, 0}, {1, 1}}), []string{"", "blah"}...)...), |
| wantMap: sparseDatas{{0, 0}, {1, 1}}, |
| wantSize: 01234, |
| }, { |
| input: makeInput(FormatGNU, "3333", |
| makeSparseStrings(sparseDatas{{0, 1}, {2, 1}, {4, 1}, {6, 1}})...), |
| wantMap: sparseDatas{{0, 1}, {2, 1}, {4, 1}, {6, 1}}, |
| wantSize: 03333, |
| }, { |
| input: makeInput(FormatGNU, "", |
| append(append( |
| makeSparseStrings(sparseDatas{{0, 1}, {2, 1}}), |
| []string{"", ""}...), |
| makeSparseStrings(sparseDatas{{4, 1}, {6, 1}})...)...), |
| wantMap: sparseDatas{{0, 1}, {2, 1}, {4, 1}, {6, 1}}, |
| }, { |
| input: makeInput(FormatGNU, "", |
| makeSparseStrings(sparseDatas{{0, 1}, {2, 1}, {4, 1}, {6, 1}, {8, 1}, {10, 1}})...)[:blockSize], |
| wantErr: io.ErrUnexpectedEOF, |
| }, { |
| input: makeInput(FormatGNU, "", |
| makeSparseStrings(sparseDatas{{0, 1}, {2, 1}, {4, 1}, {6, 1}, {8, 1}, {10, 1}})...)[:3*blockSize/2], |
| wantErr: io.ErrUnexpectedEOF, |
| }, { |
| input: makeInput(FormatGNU, "", |
| makeSparseStrings(sparseDatas{{0, 1}, {2, 1}, {4, 1}, {6, 1}, {8, 1}, {10, 1}})...), |
| wantMap: sparseDatas{{0, 1}, {2, 1}, {4, 1}, {6, 1}, {8, 1}, {10, 1}}, |
| }, { |
| input: makeInput(FormatGNU, "", |
| makeSparseStrings(sparseDatas{{10 << 30, 512}, {20 << 30, 512}})...), |
| wantMap: sparseDatas{{10 << 30, 512}, {20 << 30, 512}}, |
| }} |
| |
| for i, v := range vectors { |
| var blk block |
| var hdr Header |
| v.input = v.input[copy(blk[:], v.input):] |
| tr := Reader{r: bytes.NewReader(v.input)} |
| got, err := tr.readOldGNUSparseMap(&hdr, &blk) |
| if !equalSparseEntries(got, v.wantMap) { |
| t.Errorf("test %d, readOldGNUSparseMap(): got %v, want %v", i, got, v.wantMap) |
| } |
| if err != v.wantErr { |
| t.Errorf("test %d, readOldGNUSparseMap() = %v, want %v", i, err, v.wantErr) |
| } |
| if hdr.Size != v.wantSize { |
| t.Errorf("test %d, Header.Size = %d, want %d", i, hdr.Size, v.wantSize) |
| } |
| } |
| } |
| |
| func TestReadGNUSparsePAXHeaders(t *testing.T) { |
| padInput := func(s string) string { |
| return s + string(zeroBlock[:blockPadding(int64(len(s)))]) |
| } |
| |
| vectors := []struct { |
| inputData string |
| inputHdrs map[string]string |
| wantMap sparseDatas |
| wantSize int64 |
| wantName string |
| wantErr error |
| }{{ |
| inputHdrs: nil, |
| wantErr: nil, |
| }, { |
| inputHdrs: map[string]string{ |
| paxGNUSparseNumBlocks: strconv.FormatInt(math.MaxInt64, 10), |
| paxGNUSparseMap: "0,1,2,3", |
| }, |
| wantErr: ErrHeader, |
| }, { |
| inputHdrs: map[string]string{ |
| paxGNUSparseNumBlocks: "4\x00", |
| paxGNUSparseMap: "0,1,2,3", |
| }, |
| wantErr: ErrHeader, |
| }, { |
| inputHdrs: map[string]string{ |
| paxGNUSparseNumBlocks: "4", |
| paxGNUSparseMap: "0,1,2,3", |
| }, |
| wantErr: ErrHeader, |
| }, { |
| inputHdrs: map[string]string{ |
| paxGNUSparseNumBlocks: "2", |
| paxGNUSparseMap: "0,1,2,3", |
| }, |
| wantMap: sparseDatas{{0, 1}, {2, 3}}, |
| }, { |
| inputHdrs: map[string]string{ |
| paxGNUSparseNumBlocks: "2", |
| paxGNUSparseMap: "0, 1,2,3", |
| }, |
| wantErr: ErrHeader, |
| }, { |
| inputHdrs: map[string]string{ |
| paxGNUSparseNumBlocks: "2", |
| paxGNUSparseMap: "0,1,02,3", |
| paxGNUSparseRealSize: "4321", |
| }, |
| wantMap: sparseDatas{{0, 1}, {2, 3}}, |
| wantSize: 4321, |
| }, { |
| inputHdrs: map[string]string{ |
| paxGNUSparseNumBlocks: "2", |
| paxGNUSparseMap: "0,one1,2,3", |
| }, |
| wantErr: ErrHeader, |
| }, { |
| inputHdrs: map[string]string{ |
| paxGNUSparseMajor: "0", |
| paxGNUSparseMinor: "0", |
| paxGNUSparseNumBlocks: "2", |
| paxGNUSparseMap: "0,1,2,3", |
| paxGNUSparseSize: "1234", |
| paxGNUSparseRealSize: "4321", |
| paxGNUSparseName: "realname", |
| }, |
| wantMap: sparseDatas{{0, 1}, {2, 3}}, |
| wantSize: 1234, |
| wantName: "realname", |
| }, { |
| inputHdrs: map[string]string{ |
| paxGNUSparseMajor: "0", |
| paxGNUSparseMinor: "0", |
| paxGNUSparseNumBlocks: "1", |
| paxGNUSparseMap: "10737418240,512", |
| paxGNUSparseSize: "10737418240", |
| paxGNUSparseName: "realname", |
| }, |
| wantMap: sparseDatas{{10737418240, 512}}, |
| wantSize: 10737418240, |
| wantName: "realname", |
| }, { |
| inputHdrs: map[string]string{ |
| paxGNUSparseMajor: "0", |
| paxGNUSparseMinor: "0", |
| paxGNUSparseNumBlocks: "0", |
| paxGNUSparseMap: "", |
| }, |
| wantMap: sparseDatas{}, |
| }, { |
| inputHdrs: map[string]string{ |
| paxGNUSparseMajor: "0", |
| paxGNUSparseMinor: "1", |
| paxGNUSparseNumBlocks: "4", |
| paxGNUSparseMap: "0,5,10,5,20,5,30,5", |
| }, |
| wantMap: sparseDatas{{0, 5}, {10, 5}, {20, 5}, {30, 5}}, |
| }, { |
| inputHdrs: map[string]string{ |
| paxGNUSparseMajor: "1", |
| paxGNUSparseMinor: "0", |
| paxGNUSparseNumBlocks: "4", |
| paxGNUSparseMap: "0,5,10,5,20,5,30,5", |
| }, |
| wantErr: io.ErrUnexpectedEOF, |
| }, { |
| inputData: padInput("0\n"), |
| inputHdrs: map[string]string{paxGNUSparseMajor: "1", paxGNUSparseMinor: "0"}, |
| wantMap: sparseDatas{}, |
| }, { |
| inputData: padInput("0\n")[:blockSize-1] + "#", |
| inputHdrs: map[string]string{paxGNUSparseMajor: "1", paxGNUSparseMinor: "0"}, |
| wantMap: sparseDatas{}, |
| }, { |
| inputData: padInput("0"), |
| inputHdrs: map[string]string{paxGNUSparseMajor: "1", paxGNUSparseMinor: "0"}, |
| wantErr: io.ErrUnexpectedEOF, |
| }, { |
| inputData: padInput("ab\n"), |
| inputHdrs: map[string]string{paxGNUSparseMajor: "1", paxGNUSparseMinor: "0"}, |
| wantErr: ErrHeader, |
| }, { |
| inputData: padInput("1\n2\n3\n"), |
| inputHdrs: map[string]string{paxGNUSparseMajor: "1", paxGNUSparseMinor: "0"}, |
| wantMap: sparseDatas{{2, 3}}, |
| }, { |
| inputData: padInput("1\n2\n"), |
| inputHdrs: map[string]string{paxGNUSparseMajor: "1", paxGNUSparseMinor: "0"}, |
| wantErr: io.ErrUnexpectedEOF, |
| }, { |
| inputData: padInput("1\n2\n\n"), |
| inputHdrs: map[string]string{paxGNUSparseMajor: "1", paxGNUSparseMinor: "0"}, |
| wantErr: ErrHeader, |
| }, { |
| inputData: string(zeroBlock[:]) + padInput("0\n"), |
| inputHdrs: map[string]string{paxGNUSparseMajor: "1", paxGNUSparseMinor: "0"}, |
| wantErr: ErrHeader, |
| }, { |
| inputData: strings.Repeat("0", blockSize) + padInput("1\n5\n1\n"), |
| inputHdrs: map[string]string{paxGNUSparseMajor: "1", paxGNUSparseMinor: "0"}, |
| wantMap: sparseDatas{{5, 1}}, |
| }, { |
| inputData: padInput(fmt.Sprintf("%d\n", int64(math.MaxInt64))), |
| inputHdrs: map[string]string{paxGNUSparseMajor: "1", paxGNUSparseMinor: "0"}, |
| wantErr: ErrHeader, |
| }, { |
| inputData: padInput(strings.Repeat("0", 300) + "1\n" + strings.Repeat("0", 1000) + "5\n" + strings.Repeat("0", 800) + "2\n"), |
| inputHdrs: map[string]string{paxGNUSparseMajor: "1", paxGNUSparseMinor: "0"}, |
| wantMap: sparseDatas{{5, 2}}, |
| }, { |
| inputData: padInput("2\n10737418240\n512\n21474836480\n512\n"), |
| inputHdrs: map[string]string{paxGNUSparseMajor: "1", paxGNUSparseMinor: "0"}, |
| wantMap: sparseDatas{{10737418240, 512}, {21474836480, 512}}, |
| }, { |
| inputData: padInput("100\n" + func() string { |
| var ss []string |
| for i := 0; i < 100; i++ { |
| ss = append(ss, fmt.Sprintf("%d\n%d\n", int64(i)<<30, 512)) |
| } |
| return strings.Join(ss, "") |
| }()), |
| inputHdrs: map[string]string{paxGNUSparseMajor: "1", paxGNUSparseMinor: "0"}, |
| wantMap: func() (spd sparseDatas) { |
| for i := 0; i < 100; i++ { |
| spd = append(spd, sparseEntry{int64(i) << 30, 512}) |
| } |
| return spd |
| }(), |
| }} |
| |
| for i, v := range vectors { |
| var hdr Header |
| hdr.PAXRecords = v.inputHdrs |
| r := strings.NewReader(v.inputData + "#") // Add canary byte |
| tr := Reader{curr: ®FileReader{r, int64(r.Len())}} |
| got, err := tr.readGNUSparsePAXHeaders(&hdr) |
| if !equalSparseEntries(got, v.wantMap) { |
| t.Errorf("test %d, readGNUSparsePAXHeaders(): got %v, want %v", i, got, v.wantMap) |
| } |
| if err != v.wantErr { |
| t.Errorf("test %d, readGNUSparsePAXHeaders() = %v, want %v", i, err, v.wantErr) |
| } |
| if hdr.Size != v.wantSize { |
| t.Errorf("test %d, Header.Size = %d, want %d", i, hdr.Size, v.wantSize) |
| } |
| if hdr.Name != v.wantName { |
| t.Errorf("test %d, Header.Name = %s, want %s", i, hdr.Name, v.wantName) |
| } |
| if v.wantErr == nil && r.Len() == 0 { |
| t.Errorf("test %d, canary byte unexpectedly consumed", i) |
| } |
| } |
| } |
| |
| // testNonEmptyReader wraps an io.Reader and ensures that |
| // Read is never called with an empty buffer. |
| type testNonEmptyReader struct{ io.Reader } |
| |
| func (r testNonEmptyReader) Read(b []byte) (int, error) { |
| if len(b) == 0 { |
| return 0, errors.New("unexpected empty Read call") |
| } |
| return r.Reader.Read(b) |
| } |
| |
| func TestFileReader(t *testing.T) { |
| type ( |
| testRead struct { // Read(cnt) == (wantStr, wantErr) |
| cnt int |
| wantStr string |
| wantErr error |
| } |
| testWriteTo struct { // WriteTo(testFile{ops}) == (wantCnt, wantErr) |
| ops fileOps |
| wantCnt int64 |
| wantErr error |
| } |
| testRemaining struct { // LogicalRemaining() == wantLCnt, PhysicalRemaining() == wantPCnt |
| wantLCnt int64 |
| wantPCnt int64 |
| } |
| testFnc interface{} // testRead | testWriteTo | testRemaining |
| ) |
| |
| type ( |
| makeReg struct { |
| str string |
| size int64 |
| } |
| makeSparse struct { |
| makeReg makeReg |
| spd sparseDatas |
| size int64 |
| } |
| fileMaker interface{} // makeReg | makeSparse |
| ) |
| |
| vectors := []struct { |
| maker fileMaker |
| tests []testFnc |
| }{{ |
| maker: makeReg{"", 0}, |
| tests: []testFnc{ |
| testRemaining{0, 0}, |
| testRead{0, "", io.EOF}, |
| testRead{1, "", io.EOF}, |
| testWriteTo{nil, 0, nil}, |
| testRemaining{0, 0}, |
| }, |
| }, { |
| maker: makeReg{"", 1}, |
| tests: []testFnc{ |
| testRemaining{1, 1}, |
| testRead{5, "", io.ErrUnexpectedEOF}, |
| testWriteTo{nil, 0, io.ErrUnexpectedEOF}, |
| testRemaining{1, 1}, |
| }, |
| }, { |
| maker: makeReg{"hello", 5}, |
| tests: []testFnc{ |
| testRemaining{5, 5}, |
| testRead{5, "hello", io.EOF}, |
| testRemaining{0, 0}, |
| }, |
| }, { |
| maker: makeReg{"hello, world", 50}, |
| tests: []testFnc{ |
| testRemaining{50, 50}, |
| testRead{7, "hello, ", nil}, |
| testRemaining{43, 43}, |
| testRead{5, "world", nil}, |
| testRemaining{38, 38}, |
| testWriteTo{nil, 0, io.ErrUnexpectedEOF}, |
| testRead{1, "", io.ErrUnexpectedEOF}, |
| testRemaining{38, 38}, |
| }, |
| }, { |
| maker: makeReg{"hello, world", 5}, |
| tests: []testFnc{ |
| testRemaining{5, 5}, |
| testRead{0, "", nil}, |
| testRead{4, "hell", nil}, |
| testRemaining{1, 1}, |
| testWriteTo{fileOps{"o"}, 1, nil}, |
| testRemaining{0, 0}, |
| testWriteTo{nil, 0, nil}, |
| testRead{0, "", io.EOF}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"abcde", 5}, sparseDatas{{0, 2}, {5, 3}}, 8}, |
| tests: []testFnc{ |
| testRemaining{8, 5}, |
| testRead{3, "ab\x00", nil}, |
| testRead{10, "\x00\x00cde", io.EOF}, |
| testRemaining{0, 0}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"abcde", 5}, sparseDatas{{0, 2}, {5, 3}}, 8}, |
| tests: []testFnc{ |
| testRemaining{8, 5}, |
| testWriteTo{fileOps{"ab", int64(3), "cde"}, 8, nil}, |
| testRemaining{0, 0}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"abcde", 5}, sparseDatas{{0, 2}, {5, 3}}, 10}, |
| tests: []testFnc{ |
| testRemaining{10, 5}, |
| testRead{100, "ab\x00\x00\x00cde\x00\x00", io.EOF}, |
| testRemaining{0, 0}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"abc", 5}, sparseDatas{{0, 2}, {5, 3}}, 10}, |
| tests: []testFnc{ |
| testRemaining{10, 5}, |
| testRead{100, "ab\x00\x00\x00c", io.ErrUnexpectedEOF}, |
| testRemaining{4, 2}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"abcde", 5}, sparseDatas{{1, 3}, {6, 2}}, 8}, |
| tests: []testFnc{ |
| testRemaining{8, 5}, |
| testRead{8, "\x00abc\x00\x00de", io.EOF}, |
| testRemaining{0, 0}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"abcde", 5}, sparseDatas{{1, 3}, {6, 0}, {6, 0}, {6, 2}}, 8}, |
| tests: []testFnc{ |
| testRemaining{8, 5}, |
| testRead{8, "\x00abc\x00\x00de", io.EOF}, |
| testRemaining{0, 0}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"abcde", 5}, sparseDatas{{1, 3}, {6, 0}, {6, 0}, {6, 2}}, 8}, |
| tests: []testFnc{ |
| testRemaining{8, 5}, |
| testWriteTo{fileOps{int64(1), "abc", int64(2), "de"}, 8, nil}, |
| testRemaining{0, 0}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"abcde", 5}, sparseDatas{{1, 3}, {6, 2}}, 10}, |
| tests: []testFnc{ |
| testRead{100, "\x00abc\x00\x00de\x00\x00", io.EOF}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"abcde", 5}, sparseDatas{{1, 3}, {6, 2}}, 10}, |
| tests: []testFnc{ |
| testWriteTo{fileOps{int64(1), "abc", int64(2), "de", int64(1), "\x00"}, 10, nil}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"abcde", 5}, sparseDatas{{1, 3}, {6, 2}, {8, 0}, {8, 0}, {8, 0}, {8, 0}}, 10}, |
| tests: []testFnc{ |
| testRead{100, "\x00abc\x00\x00de\x00\x00", io.EOF}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"", 0}, sparseDatas{}, 2}, |
| tests: []testFnc{ |
| testRead{100, "\x00\x00", io.EOF}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"", 8}, sparseDatas{{1, 3}, {6, 5}}, 15}, |
| tests: []testFnc{ |
| testRead{100, "\x00", io.ErrUnexpectedEOF}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"ab", 2}, sparseDatas{{1, 3}, {6, 5}}, 15}, |
| tests: []testFnc{ |
| testRead{100, "\x00ab", errMissData}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"ab", 8}, sparseDatas{{1, 3}, {6, 5}}, 15}, |
| tests: []testFnc{ |
| testRead{100, "\x00ab", io.ErrUnexpectedEOF}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"abc", 3}, sparseDatas{{1, 3}, {6, 5}}, 15}, |
| tests: []testFnc{ |
| testRead{100, "\x00abc\x00\x00", errMissData}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"abc", 8}, sparseDatas{{1, 3}, {6, 5}}, 15}, |
| tests: []testFnc{ |
| testRead{100, "\x00abc\x00\x00", io.ErrUnexpectedEOF}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"abcde", 5}, sparseDatas{{1, 3}, {6, 5}}, 15}, |
| tests: []testFnc{ |
| testRead{100, "\x00abc\x00\x00de", errMissData}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"abcde", 5}, sparseDatas{{1, 3}, {6, 5}}, 15}, |
| tests: []testFnc{ |
| testWriteTo{fileOps{int64(1), "abc", int64(2), "de"}, 8, errMissData}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"abcde", 8}, sparseDatas{{1, 3}, {6, 5}}, 15}, |
| tests: []testFnc{ |
| testRead{100, "\x00abc\x00\x00de", io.ErrUnexpectedEOF}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"abcdefghEXTRA", 13}, sparseDatas{{1, 3}, {6, 5}}, 15}, |
| tests: []testFnc{ |
| testRemaining{15, 13}, |
| testRead{100, "\x00abc\x00\x00defgh\x00\x00\x00\x00", errUnrefData}, |
| testWriteTo{nil, 0, errUnrefData}, |
| testRemaining{0, 5}, |
| }, |
| }, { |
| maker: makeSparse{makeReg{"abcdefghEXTRA", 13}, sparseDatas{{1, 3}, {6, 5}}, 15}, |
| tests: []testFnc{ |
| testRemaining{15, 13}, |
| testWriteTo{fileOps{int64(1), "abc", int64(2), "defgh", int64(4)}, 15, errUnrefData}, |
| testRead{100, "", errUnrefData}, |
| testRemaining{0, 5}, |
| }, |
| }} |
| |
| for i, v := range vectors { |
| var fr fileReader |
| switch maker := v.maker.(type) { |
| case makeReg: |
| r := testNonEmptyReader{strings.NewReader(maker.str)} |
| fr = ®FileReader{r, maker.size} |
| case makeSparse: |
| if !validateSparseEntries(maker.spd, maker.size) { |
| t.Fatalf("invalid sparse map: %v", maker.spd) |
| } |
| sph := invertSparseEntries(maker.spd, maker.size) |
| r := testNonEmptyReader{strings.NewReader(maker.makeReg.str)} |
| fr = ®FileReader{r, maker.makeReg.size} |
| fr = &sparseFileReader{fr, sph, 0} |
| default: |
| t.Fatalf("test %d, unknown make operation: %T", i, maker) |
| } |
| |
| for j, tf := range v.tests { |
| switch tf := tf.(type) { |
| case testRead: |
| b := make([]byte, tf.cnt) |
| n, err := fr.Read(b) |
| if got := string(b[:n]); got != tf.wantStr || err != tf.wantErr { |
| t.Errorf("test %d.%d, Read(%d):\ngot (%q, %v)\nwant (%q, %v)", i, j, tf.cnt, got, err, tf.wantStr, tf.wantErr) |
| } |
| case testWriteTo: |
| f := &testFile{ops: tf.ops} |
| got, err := fr.WriteTo(f) |
| if _, ok := err.(testError); ok { |
| t.Errorf("test %d.%d, WriteTo(): %v", i, j, err) |
| } else if got != tf.wantCnt || err != tf.wantErr { |
| t.Errorf("test %d.%d, WriteTo() = (%d, %v), want (%d, %v)", i, j, got, err, tf.wantCnt, tf.wantErr) |
| } |
| if len(f.ops) > 0 { |
| t.Errorf("test %d.%d, expected %d more operations", i, j, len(f.ops)) |
| } |
| case testRemaining: |
| if got := fr.LogicalRemaining(); got != tf.wantLCnt { |
| t.Errorf("test %d.%d, LogicalRemaining() = %d, want %d", i, j, got, tf.wantLCnt) |
| } |
| if got := fr.PhysicalRemaining(); got != tf.wantPCnt { |
| t.Errorf("test %d.%d, PhysicalRemaining() = %d, want %d", i, j, got, tf.wantPCnt) |
| } |
| default: |
| t.Fatalf("test %d.%d, unknown test operation: %T", i, j, tf) |
| } |
| } |
| } |
| } |
