1 // Copyright 2016 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package tar 6 7 import ( 8 "math" 9 "strings" 10 "testing" 11 "time" 12 ) 13 14 func TestFitsInBase256(t *testing.T) { 15 vectors := []struct { 16 in int64 17 width int 18 ok bool 19 }{ 20 {+1, 8, true}, 21 {0, 8, true}, 22 {-1, 8, true}, 23 {1 << 56, 8, false}, 24 {(1 << 56) - 1, 8, true}, 25 {-1 << 56, 8, true}, 26 {(-1 << 56) - 1, 8, false}, 27 {121654, 8, true}, 28 {-9849849, 8, true}, 29 {math.MaxInt64, 9, true}, 30 {0, 9, true}, 31 {math.MinInt64, 9, true}, 32 {math.MaxInt64, 12, true}, 33 {0, 12, true}, 34 {math.MinInt64, 12, true}, 35 } 36 37 for _, v := range vectors { 38 ok := fitsInBase256(v.width, v.in) 39 if ok != v.ok { 40 t.Errorf("fitsInBase256(%d, %d): got %v, want %v", v.in, v.width, ok, v.ok) 41 } 42 } 43 } 44 45 func TestParseNumeric(t *testing.T) { 46 vectors := []struct { 47 in string 48 want int64 49 ok bool 50 }{ 51 // Test base-256 (binary) encoded values. 52 {"", 0, true}, 53 {"\x80", 0, true}, 54 {"\x80\x00", 0, true}, 55 {"\x80\x00\x00", 0, true}, 56 {"\xbf", (1 << 6) - 1, true}, 57 {"\xbf\xff", (1 << 14) - 1, true}, 58 {"\xbf\xff\xff", (1 << 22) - 1, true}, 59 {"\xff", -1, true}, 60 {"\xff\xff", -1, true}, 61 {"\xff\xff\xff", -1, true}, 62 {"\xc0", -1 * (1 << 6), true}, 63 {"\xc0\x00", -1 * (1 << 14), true}, 64 {"\xc0\x00\x00", -1 * (1 << 22), true}, 65 {"\x87\x76\xa2\x22\xeb\x8a\x72\x61", 537795476381659745, true}, 66 {"\x80\x00\x00\x00\x07\x76\xa2\x22\xeb\x8a\x72\x61", 537795476381659745, true}, 67 {"\xf7\x76\xa2\x22\xeb\x8a\x72\x61", -615126028225187231, true}, 68 {"\xff\xff\xff\xff\xf7\x76\xa2\x22\xeb\x8a\x72\x61", -615126028225187231, true}, 69 {"\x80\x7f\xff\xff\xff\xff\xff\xff\xff", math.MaxInt64, true}, 70 {"\x80\x80\x00\x00\x00\x00\x00\x00\x00", 0, false}, 71 {"\xff\x80\x00\x00\x00\x00\x00\x00\x00", math.MinInt64, true}, 72 {"\xff\x7f\xff\xff\xff\xff\xff\xff\xff", 0, false}, 73 {"\xf5\xec\xd1\xc7\x7e\x5f\x26\x48\x81\x9f\x8f\x9b", 0, false}, 74 75 // Test base-8 (octal) encoded values. 76 {"0000000\x00", 0, true}, 77 {" \x0000000\x00", 0, true}, 78 {" \x0000003\x00", 3, true}, 79 {"00000000227\x00", 0227, true}, 80 {"032033\x00 ", 032033, true}, 81 {"320330\x00 ", 0320330, true}, 82 {"0000660\x00 ", 0660, true}, 83 {"\x00 0000660\x00 ", 0660, true}, 84 {"0123456789abcdef", 0, false}, 85 {"0123456789\x00abcdef", 0, false}, 86 {"01234567\x0089abcdef", 342391, true}, 87 {"0123\x7e\x5f\x264123", 0, false}, 88 } 89 90 for _, v := range vectors { 91 var p parser 92 got := p.parseNumeric([]byte(v.in)) 93 ok := (p.err == nil) 94 if ok != v.ok { 95 if v.ok { 96 t.Errorf("parseNumeric(%q): got parsing failure, want success", v.in) 97 } else { 98 t.Errorf("parseNumeric(%q): got parsing success, want failure", v.in) 99 } 100 } 101 if ok && got != v.want { 102 t.Errorf("parseNumeric(%q): got %d, want %d", v.in, got, v.want) 103 } 104 } 105 } 106 107 func TestFormatNumeric(t *testing.T) { 108 vectors := []struct { 109 in int64 110 want string 111 ok bool 112 }{ 113 // Test base-256 (binary) encoded values. 114 {-1, "\xff", true}, 115 {-1, "\xff\xff", true}, 116 {-1, "\xff\xff\xff", true}, 117 {(1 << 0), "0", false}, 118 {(1 << 8) - 1, "\x80\xff", true}, 119 {(1 << 8), "0\x00", false}, 120 {(1 << 16) - 1, "\x80\xff\xff", true}, 121 {(1 << 16), "00\x00", false}, 122 {-1 * (1 << 0), "\xff", true}, 123 {-1*(1<<0) - 1, "0", false}, 124 {-1 * (1 << 8), "\xff\x00", true}, 125 {-1*(1<<8) - 1, "0\x00", false}, 126 {-1 * (1 << 16), "\xff\x00\x00", true}, 127 {-1*(1<<16) - 1, "00\x00", false}, 128 {537795476381659745, "0000000\x00", false}, 129 {537795476381659745, "\x80\x00\x00\x00\x07\x76\xa2\x22\xeb\x8a\x72\x61", true}, 130 {-615126028225187231, "0000000\x00", false}, 131 {-615126028225187231, "\xff\xff\xff\xff\xf7\x76\xa2\x22\xeb\x8a\x72\x61", true}, 132 {math.MaxInt64, "0000000\x00", false}, 133 {math.MaxInt64, "\x80\x00\x00\x00\x7f\xff\xff\xff\xff\xff\xff\xff", true}, 134 {math.MinInt64, "0000000\x00", false}, 135 {math.MinInt64, "\xff\xff\xff\xff\x80\x00\x00\x00\x00\x00\x00\x00", true}, 136 {math.MaxInt64, "\x80\x7f\xff\xff\xff\xff\xff\xff\xff", true}, 137 {math.MinInt64, "\xff\x80\x00\x00\x00\x00\x00\x00\x00", true}, 138 } 139 140 for _, v := range vectors { 141 var f formatter 142 got := make([]byte, len(v.want)) 143 f.formatNumeric(got, v.in) 144 ok := (f.err == nil) 145 if ok != v.ok { 146 if v.ok { 147 t.Errorf("formatNumeric(%d): got formatting failure, want success", v.in) 148 } else { 149 t.Errorf("formatNumeric(%d): got formatting success, want failure", v.in) 150 } 151 } 152 if string(got) != v.want { 153 t.Errorf("formatNumeric(%d): got %q, want %q", v.in, got, v.want) 154 } 155 } 156 } 157 158 func TestParsePAXTime(t *testing.T) { 159 vectors := []struct { 160 in string 161 want time.Time 162 ok bool 163 }{ 164 {"1350244992.023960108", time.Unix(1350244992, 23960108), true}, 165 {"1350244992.02396010", time.Unix(1350244992, 23960100), true}, 166 {"1350244992.0239601089", time.Unix(1350244992, 23960108), true}, 167 {"1350244992.3", time.Unix(1350244992, 300000000), true}, 168 {"1350244992", time.Unix(1350244992, 0), true}, 169 {"-1.000000001", time.Unix(-1, -1e0+0e0), true}, 170 {"-1.000001", time.Unix(-1, -1e3+0e0), true}, 171 {"-1.001000", time.Unix(-1, -1e6+0e0), true}, 172 {"-1", time.Unix(-1, -0e0+0e0), true}, 173 {"-1.999000", time.Unix(-1, -1e9+1e6), true}, 174 {"-1.999999", time.Unix(-1, -1e9+1e3), true}, 175 {"-1.999999999", time.Unix(-1, -1e9+1e0), true}, 176 {"0.000000001", time.Unix(0, 1e0+0e0), true}, 177 {"0.000001", time.Unix(0, 1e3+0e0), true}, 178 {"0.001000", time.Unix(0, 1e6+0e0), true}, 179 {"0", time.Unix(0, 0e0), true}, 180 {"0.999000", time.Unix(0, 1e9-1e6), true}, 181 {"0.999999", time.Unix(0, 1e9-1e3), true}, 182 {"0.999999999", time.Unix(0, 1e9-1e0), true}, 183 {"1.000000001", time.Unix(+1, +1e0-0e0), true}, 184 {"1.000001", time.Unix(+1, +1e3-0e0), true}, 185 {"1.001000", time.Unix(+1, +1e6-0e0), true}, 186 {"1", time.Unix(+1, +0e0-0e0), true}, 187 {"1.999000", time.Unix(+1, +1e9-1e6), true}, 188 {"1.999999", time.Unix(+1, +1e9-1e3), true}, 189 {"1.999999999", time.Unix(+1, +1e9-1e0), true}, 190 {"-1350244992.023960108", time.Unix(-1350244992, -23960108), true}, 191 {"-1350244992.02396010", time.Unix(-1350244992, -23960100), true}, 192 {"-1350244992.0239601089", time.Unix(-1350244992, -23960108), true}, 193 {"-1350244992.3", time.Unix(-1350244992, -300000000), true}, 194 {"-1350244992", time.Unix(-1350244992, 0), true}, 195 {"", time.Time{}, false}, 196 {"0", time.Unix(0, 0), true}, 197 {"1.", time.Unix(1, 0), true}, 198 {"0.0", time.Unix(0, 0), true}, 199 {".5", time.Time{}, false}, 200 {"-1.3", time.Unix(-1, -3e8), true}, 201 {"-1.0", time.Unix(-1, -0e0), true}, 202 {"-0.0", time.Unix(-0, -0e0), true}, 203 {"-0.1", time.Unix(-0, -1e8), true}, 204 {"-0.01", time.Unix(-0, -1e7), true}, 205 {"-0.99", time.Unix(-0, -99e7), true}, 206 {"-0.98", time.Unix(-0, -98e7), true}, 207 {"-1.1", time.Unix(-1, -1e8), true}, 208 {"-1.01", time.Unix(-1, -1e7), true}, 209 {"-2.99", time.Unix(-2, -99e7), true}, 210 {"-5.98", time.Unix(-5, -98e7), true}, 211 {"-", time.Time{}, false}, 212 {"+", time.Time{}, false}, 213 {"-1.-1", time.Time{}, false}, 214 {"99999999999999999999999999999999999999999999999", time.Time{}, false}, 215 {"0.123456789abcdef", time.Time{}, false}, 216 {"foo", time.Time{}, false}, 217 {"\x00", time.Time{}, false}, 218 {".", time.Time{}, false}, // Unicode numbers (U+1D7EC to U+1D7F5) 219 {"9876543210", time.Time{}, false}, // Unicode period (U+FE52) 220 } 221 222 for _, v := range vectors { 223 ts, err := parsePAXTime(v.in) 224 ok := (err == nil) 225 if v.ok != ok { 226 if v.ok { 227 t.Errorf("parsePAXTime(%q): got parsing failure, want success", v.in) 228 } else { 229 t.Errorf("parsePAXTime(%q): got parsing success, want failure", v.in) 230 } 231 } 232 if ok && !ts.Equal(v.want) { 233 t.Errorf("parsePAXTime(%q): got (%ds %dns), want (%ds %dns)", 234 v.in, ts.Unix(), ts.Nanosecond(), v.want.Unix(), v.want.Nanosecond()) 235 } 236 } 237 } 238 239 func TestParsePAXRecord(t *testing.T) { 240 medName := strings.Repeat("CD", 50) 241 longName := strings.Repeat("AB", 100) 242 243 vectors := []struct { 244 in string 245 wantRes string 246 wantKey string 247 wantVal string 248 ok bool 249 }{ 250 {"6 k=v\n\n", "\n", "k", "v", true}, 251 {"19 path=/etc/hosts\n", "", "path", "/etc/hosts", true}, 252 {"210 path=" + longName + "\nabc", "abc", "path", longName, true}, 253 {"110 path=" + medName + "\n", "", "path", medName, true}, 254 {"9 foo=ba\n", "", "foo", "ba", true}, 255 {"11 foo=bar\n\x00", "\x00", "foo", "bar", true}, 256 {"18 foo=b=\nar=\n==\x00\n", "", "foo", "b=\nar=\n==\x00", true}, 257 {"27 foo=hello9 foo=ba\nworld\n", "", "foo", "hello9 foo=ba\nworld", true}, 258 {"27 =ab\nmeow mix", "meow mix", "", "ab", true}, 259 {"17 \x00hello=\x00world\n", "", "\x00hello", "\x00world", true}, 260 {"1 k=1\n", "1 k=1\n", "", "", false}, 261 {"6 k~1\n", "6 k~1\n", "", "", false}, 262 {"6_k=1\n", "6_k=1\n", "", "", false}, 263 {"6 k=1 ", "6 k=1 ", "", "", false}, 264 {"632 k=1\n", "632 k=1\n", "", "", false}, 265 {"16 longkeyname=hahaha\n", "16 longkeyname=hahaha\n", "", "", false}, 266 {"3 somelongkey=\n", "3 somelongkey=\n", "", "", false}, 267 {"50 tooshort=\n", "50 tooshort=\n", "", "", false}, 268 } 269 270 for _, v := range vectors { 271 key, val, res, err := parsePAXRecord(v.in) 272 ok := (err == nil) 273 if ok != v.ok { 274 if v.ok { 275 t.Errorf("parsePAXRecord(%q): got parsing failure, want success", v.in) 276 } else { 277 t.Errorf("parsePAXRecord(%q): got parsing success, want failure", v.in) 278 } 279 } 280 if v.ok && (key != v.wantKey || val != v.wantVal) { 281 t.Errorf("parsePAXRecord(%q): got (%q: %q), want (%q: %q)", 282 v.in, key, val, v.wantKey, v.wantVal) 283 } 284 if res != v.wantRes { 285 t.Errorf("parsePAXRecord(%q): got residual %q, want residual %q", 286 v.in, res, v.wantRes) 287 } 288 } 289 } 290 291 func TestFormatPAXRecord(t *testing.T) { 292 medName := strings.Repeat("CD", 50) 293 longName := strings.Repeat("AB", 100) 294 295 vectors := []struct { 296 inKey string 297 inVal string 298 want string 299 }{ 300 {"k", "v", "6 k=v\n"}, 301 {"path", "/etc/hosts", "19 path=/etc/hosts\n"}, 302 {"path", longName, "210 path=" + longName + "\n"}, 303 {"path", medName, "110 path=" + medName + "\n"}, 304 {"foo", "ba", "9 foo=ba\n"}, 305 {"foo", "bar", "11 foo=bar\n"}, 306 {"foo", "b=\nar=\n==\x00", "18 foo=b=\nar=\n==\x00\n"}, 307 {"foo", "hello9 foo=ba\nworld", "27 foo=hello9 foo=ba\nworld\n"}, 308 {"", "ab", "27 =ab\n"}, 309 {"\x00hello", "\x00world", "17 \x00hello=\x00world\n"}, 310 } 311 312 for _, v := range vectors { 313 got := formatPAXRecord(v.inKey, v.inVal) 314 if got != v.want { 315 t.Errorf("formatPAXRecord(%q, %q): got %q, want %q", 316 v.inKey, v.inVal, got, v.want) 317 } 318 } 319 } 320
