(/home/sate/Testcases/c/cve/wireshark-1.2.0/wiretap/libpcap.c) |
| |
| 67 | | | int libpcap_open(wtap *wth, int *err, gchar **err_info) |
| 68 | | | { |
| 69 | | | int bytes_read; |
| 70 | | | guint32 magic; |
| 71 | | | struct pcap_hdr hdr; |
| 72 | | | gboolean byte_swapped; |
| 73 | | | gboolean modified; |
| 74 | | | gboolean aix; |
| 75 | | | int file_encap; |
| 76 | | | |
| 77 | | | |
| 78 | | | errno = WTAP_ERR_CANT_READ; |
| 79 | | | bytes_read = file_read(&magic, 1, sizeof magic, wth->fh);
x /home/sate/Testcases/c/cve/wireshark-1.2.0/wiretap/file_wrappers.h |
| |
36 | #define file_read(buf, bsize, count, file) gzread((file),(buf),(unsigned)((count)*(bsize))) |
| |
|
| 80 | | | if (bytes_read != sizeof magic) { |
| 81 | | | *err = file_error(wth->fh); |
| 82 | | | if (*err != 0) |
| 83 | | | return -1; |
| 84 | | | return 0; |
| 85 | | | } |
| 86 | | | wth->data_offset += sizeof magic; |
| 87 | | | |
| 88 | | | switch (magic) { |
| 89 | | | |
| 90 | | | case PCAP_MAGIC: |
| 91 | | | |
| 92 | | | |
| 93 | | | byte_swapped = FALSE; |
| 94 | | | modified = FALSE; |
| 95 | | | wth->tsprecision = WTAP_FILE_TSPREC_USEC; |
| 96 | | | break; |
| 97 | | | |
| 98 | | | case PCAP_MODIFIED_MAGIC: |
| 99 | | | |
| 100 | | | |
| 101 | | | byte_swapped = FALSE; |
| 102 | | | modified = TRUE; |
| 103 | | | wth->tsprecision = WTAP_FILE_TSPREC_USEC; |
| 104 | | | break; |
| 105 | | | |
| 106 | | | case PCAP_SWAPPED_MAGIC: |
| 107 | | | |
| 108 | | | |
| 109 | | | |
| 110 | | | byte_swapped = TRUE; |
| 111 | | | modified = FALSE; |
| 112 | | | wth->tsprecision = WTAP_FILE_TSPREC_USEC; |
| 113 | | | break; |
| 114 | | | |
| 115 | | | case PCAP_SWAPPED_MODIFIED_MAGIC: |
| 116 | | | |
| 117 | | | |
| 118 | | | |
| 119 | | | byte_swapped = TRUE; |
| 120 | | | modified = TRUE; |
| 121 | | | wth->tsprecision = WTAP_FILE_TSPREC_USEC; |
| 122 | | | break; |
| 123 | | | |
| 124 | | | case PCAP_NSEC_MAGIC: |
| 125 | | | |
| 126 | | | |
| 127 | | | byte_swapped = FALSE; |
| 128 | | | modified = FALSE; |
| 129 | | | wth->tsprecision = WTAP_FILE_TSPREC_NSEC; |
| 130 | | | break; |
| 131 | | | |
| 132 | | | case PCAP_SWAPPED_NSEC_MAGIC: |
| 133 | | | |
| 134 | | | |
| 135 | | | |
| 136 | | | byte_swapped = TRUE; |
| 137 | | | modified = FALSE; |
| 138 | | | wth->tsprecision = WTAP_FILE_TSPREC_NSEC; |
| 139 | | | break; |
| 140 | | | |
| 141 | | | default: |
| 142 | | | |
| 143 | | | return 0; |
| 144 | | | } |
| 145 | | | |
| 146 | | | |
| 147 | | | errno = WTAP_ERR_CANT_READ; |
Useless Assignment
This code assigns the variable the same value it already had. |
|
| 148 | | | bytes_read = file_read(&hdr, 1, sizeof hdr, wth->fh);
x /home/sate/Testcases/c/cve/wireshark-1.2.0/wiretap/file_wrappers.h |
| |
36 | #define file_read(buf, bsize, count, file) gzread((file),(buf),(unsigned)((count)*(bsize))) |
| |
|
| 149 | | | if (bytes_read != sizeof hdr) { |
| 150 | | | *err = file_error(wth->fh); |
| 151 | | | if (*err != 0) |
| 152 | | | return -1; |
| 153 | | | return 0; |
| 154 | | | } |
| 155 | | | wth->data_offset += sizeof hdr; |
| 156 | | | |
| 157 | | | if (byte_swapped) { |
| 158 | | | |
| 159 | | | hdr.version_major = BSWAP16(hdr.version_major); |
| 160 | | | hdr.version_minor = BSWAP16(hdr.version_minor); |
| 161 | | | hdr.snaplen = BSWAP32(hdr.snaplen);
x /home/sate/Testcases/c/cve/wireshark-1.2.0/wiretap/wtap-int.h |
| |
297 | #define BSWAP32(x) \ |
298 | ((((x)&0xFF000000)>>24) | \ |
299 | (((x)&0x00FF0000)>>8) | \ |
300 | (((x)&0x0000FF00)<<8) | \ |
301 | (((x)&0x000000FF)<<24)) |
| |
|
| 162 | | | hdr.network = BSWAP32(hdr.network);
x /home/sate/Testcases/c/cve/wireshark-1.2.0/wiretap/wtap-int.h |
| |
297 | #define BSWAP32(x) \ |
298 | ((((x)&0xFF000000)>>24) | \ |
299 | (((x)&0x00FF0000)>>8) | \ |
300 | (((x)&0x0000FF00)<<8) | \ |
301 | (((x)&0x000000FF)<<24)) |
| |
|
| 163 | | | } |
| 164 | | | if (hdr.version_major < 2) { |
| 165 | | | |
| 166 | | | *err = WTAP_ERR_UNSUPPORTED; |
| 167 | | | *err_info = g_strdup_printf("pcap: major version %u unsupported", |
| 168 | | | hdr.version_major); |
| 169 | | | return -1; |
| 170 | | | } |
| 171 | | | |
| 172 | | | |
| 173 | | | |
| 174 | | | |
| 175 | | | |
| 176 | | | |
| 177 | | | |
| 178 | | | |
| 179 | | | |
| 180 196 |  | | [ Lines 180 to 196 omitted. ] |
| 197 | | | |
| 198 | | | |
| 199 | | | |
| 200 | | | |
| 201 | | | |
| 202 | | | |
| 203 | | | |
| 204 | | | |
| 205 | | | |
| 206 | | | |
| 207 | | | aix = FALSE; |
| 208 | | | if (hdr.version_major == 2 && hdr.version_minor == 2) { |
| 209 | | | switch (hdr.network) { |
| 210 | | | |
| 211 | | | case 6: |
| 212 | | | hdr.network = 1; |
| 213 | | | aix = TRUE; |
| 214 | | | break; |
| 215 | | | |
| 216 | | | case 9: |
| 217 | | | hdr.network = 6; |
| 218 | | | aix = TRUE; |
| 219 | | | break; |
| 220 | | | |
| 221 | | | case 15: |
| 222 | | | hdr.network = 10; |
| 223 | | | aix = TRUE; |
| 224 | | | break; |
| 225 | | | |
| 226 | | | case 24: |
| 227 | | | hdr.network = 0; |
| 228 | | | aix = TRUE; |
| 229 | | | break; |
| 230 | | | } |
| 231 | | | } |
| 232 | | | |
| 233 | | | |
| 234 | | | |
| 235 | | | |
| 236 | | | |
| 237 | | | |
| 238 | | | |
| 239 | | | |
| 240 | | | |
| 241 | | | |
| 242 | | | |
| 243 | | | file_encap = wtap_pcap_encap_to_wtap_encap(hdr.network); |
| 244 | | | if (file_encap == WTAP_ENCAP_UNKNOWN && hdr.network != 13) { |
| 245 | | | *err = WTAP_ERR_UNSUPPORTED_ENCAP; |
| 246 | | | *err_info = g_strdup_printf("pcap: network type %u unknown or unsupported", |
| 247 | | | hdr.network); |
| 248 | | | return -1; |
| 249 | | | } |
| 250 | | | |
| 251 | | | |
| 252 | | | wth->capture.pcap = g_malloc(sizeof(libpcap_t)); |
| 253 | | | wth->capture.pcap->byte_swapped = byte_swapped; |
| 254 | | | wth->capture.pcap->version_major = hdr.version_major; |
| 255 | | | wth->capture.pcap->version_minor = hdr.version_minor; |
| 256 | | | wth->subtype_read = libpcap_read; |
| 257 | | | wth->subtype_seek_read = libpcap_seek_read; |
| 258 | | | wth->subtype_close = libpcap_close; |
| 259 | | | wth->file_encap = file_encap; |
| 260 | | | wth->snapshot_length = hdr.snaplen; |
| 261 | | | |
| 262 | | | |
| 263 | | | |
| 264 | | | |
| 265 | | | |
| 266 | | | |
| 267 | | | |
| 268 | | | |
| 269 | | | |
| 270 | | | |
| 271 | | | |
| 272 | | | |
| 273 | | | |
| 274 | | | |
| 275 | | | |
| 276 | | | |
| 277 | | | |
| 278 | | | switch (hdr.version_major) { |
| 279 | | | |
| 280 | | | case 2: |
| 281 | | | if (hdr.version_minor < 3) |
| 282 | | | wth->capture.pcap->lengths_swapped = SWAPPED; |
| 283 | | | else if (hdr.version_minor == 3) |
| 284 | | | wth->capture.pcap->lengths_swapped = MAYBE_SWAPPED; |
| 285 | | | else |
| 286 | | | wth->capture.pcap->lengths_swapped = NOT_SWAPPED; |
| 287 | | | break; |
| 288 | | | |
| 289 | | | case 543: |
| 290 | | | wth->capture.pcap->lengths_swapped = SWAPPED; |
| 291 | | | break; |
| 292 | | | |
| 293 | | | default: |
| 294 | | | wth->capture.pcap->lengths_swapped = NOT_SWAPPED; |
| 295 | | | break; |
| 296 | | | } |
| 297 | | | |
| 298 | | | |
| 299 | | | |
| 300 | | | |
| 301 | | | if (aix) { |
| 302 | | | |
| 303 | | | |
| 304 | | | |
| 305 | | | |
| 306 | | | wth->file_type = WTAP_FILE_PCAP_AIX; |
| 307 | | | wth->tsprecision = WTAP_FILE_TSPREC_NSEC; |
| 308 | | | return 1; |
| 309 | | | } |
| 310 | | | |
| 311 | | | |
| 312 | | | |
| 313 | | | |
| 314 | | | |
| 315 | | | |
| 316 | | | |
| 317 | | | |
| 318 | | | |
| 319 333 |  | | [ Lines 319 to 333 omitted. ] |
| 334 | | | |
| 335 | | | |
| 336 | | | |
| 337 | | | |
| 338 | | | |
| 339 | | | |
| 340 | | | |
| 341 | | | |
| 342 | | | |
| 343 | | | |
| 344 | | | if (modified) { |
| 345 | | | |
| 346 | | | |
| 347 | | | |
| 348 | | | |
| 349 | | | |
| 350 | | | |
| 351 | | | wth->file_type = WTAP_FILE_PCAP_SS991029; |
| 352 | | | switch (libpcap_try(wth, err)) { |
| 353 | | | |
| 354 | | | case BAD_READ: |
| 355 | | | |
| 356 | | | |
| 357 | | | |
| 358 | | | |
| 359 | | | g_free(wth->capture.pcap); |
| 360 | | | return -1; |
| 361 | | | |
| 362 | | | case THIS_FORMAT: |
| 363 | | | |
| 364 | | | |
| 365 | | | |
| 366 | | | |
| 367 | | | if (file_seek(wth->fh, wth->data_offset, SEEK_SET, err) == -1) {
x /usr/include/stdio.h |
| |
141 | #define SEEK_SET 0 /* Seek from beginning of file. */ |
| |
|
| 368 | | | g_free(wth->capture.pcap); |
| 369 | | | return -1; |
| 370 | | | } |
| 371 | | | return 1; |
| 372 | | | |
| 373 | | | case OTHER_FORMAT: |
| 374 | | | |
| 375 | | | |
| 376 | | | |
| 377 | | | break; |
| 378 | | | } |
| 379 | | | |
| 380 | | | |
| 381 | | | |
| 382 | | | |
| 383 | | | |
| 384 | | | |
| 385 | | | |
| 386 | | | |
| 387 | | | wth->file_type = WTAP_FILE_PCAP_SS990915; |
| 388 | | | if (file_seek(wth->fh, wth->data_offset, SEEK_SET, err) == -1) {
x /usr/include/stdio.h |
| |
141 | #define SEEK_SET 0 /* Seek from beginning of file. */ |
| |
|
| 389 | | | g_free(wth->capture.pcap); |
| 390 | | | return -1; |
| 391 | | | } |
| 392 | | | } else { |
| 393 | | | |
| 394 | | | |
| 395 | | | |
| 396 | | | |
| 397 | | | |
| 398 | | | if(wth->tsprecision == WTAP_FILE_TSPREC_NSEC) { |
| 399 | | | wth->file_type = WTAP_FILE_PCAP_NSEC; |
| 400 | | | } else { |
| 401 | | | wth->file_type = WTAP_FILE_PCAP; |
| 402 | | | } |
| 403 | | | switch (libpcap_try(wth, err)) { |
| 404 | | | |
| 405 | | | case BAD_READ: |
| 406 | | | |
| 407 | | | |
| 408 | | | |
| 409 | | | |
| 410 | | | g_free(wth->capture.pcap); |
| 411 | | | return -1; |
| 412 | | | |
| 413 | | | case THIS_FORMAT: |
| 414 | | | |
| 415 | | | |
| 416 | | | |
| 417 | | | |
| 418 | | | |
| 419 | | | if (file_seek(wth->fh, wth->data_offset, SEEK_SET, err) == -1) {
x /usr/include/stdio.h |
| |
141 | #define SEEK_SET 0 /* Seek from beginning of file. */ |
| |
|
| 420 | | | g_free(wth->capture.pcap); |
| 421 | | | return -1; |
| 422 | | | } |
| 423 | | | return 1; |
| 424 | | | |
| 425 | | | case OTHER_FORMAT: |
| 426 | | | |
| 427 | | | |
| 428 | | | |
| 429 | | | break; |
| 430 | | | } |
| 431 | | | |
| 432 | | | |
| 433 | | | |
| 434 | | | |
| 435 | | | |
| 436 | | | |
| 437 | | | wth->file_type = WTAP_FILE_PCAP_SS990417; |
| 438 | | | if (file_seek(wth->fh, wth->data_offset, SEEK_SET, err) == -1) {
x /usr/include/stdio.h |
| |
141 | #define SEEK_SET 0 /* Seek from beginning of file. */ |
| |
|
| 439 | | | g_free(wth->capture.pcap); |
| 440 | | | return -1; |
| 441 | | | } |
| 442 | | | switch (libpcap_try(wth, err)) { |
| 443 | | | |
| 444 | | | case BAD_READ: |
| 445 | | | |
| 446 | | | |
| 447 | | | |
| 448 | | | |
| 449 | | | g_free(wth->capture.pcap); |
| 450 | | | return -1; |
| 451 | | | |
| 452 | | | case THIS_FORMAT: |
| 453 | | | |
| 454 | | | |
| 455 | | | |
| 456 | | | |
| 457 | | | if (file_seek(wth->fh, wth->data_offset, SEEK_SET, err) == -1) {
x /usr/include/stdio.h |
| |
141 | #define SEEK_SET 0 /* Seek from beginning of file. */ |
| |
|
| 458 | | | g_free(wth->capture.pcap); |
| 459 | | | return -1; |
| 460 | | | } |
| 461 | | | return 1; |
| 462 | | | |
| 463 | | | case OTHER_FORMAT: |
| 464 | | | |
| 465 | | | |
| 466 | | | |
| 467 | | | break; |
| 468 | | | } |
| 469 | | | |
| 470 | | | |
| 471 | | | |
| 472 | | | |
| 473 | | | |
| 474 | | | |
| 475 | | | |
| 476 | | | |
| 477 | | | wth->file_type = WTAP_FILE_PCAP_NOKIA; |
| 478 | | | if (file_seek(wth->fh, wth->data_offset, SEEK_SET, err) == -1) {
x /usr/include/stdio.h |
| |
141 | #define SEEK_SET 0 /* Seek from beginning of file. */ |
| |
|
| 479 | | | g_free(wth->capture.pcap); |
| 480 | | | return -1; |
| 481 | | | } |
| 482 | | | } |
| 483 | | | |
| 484 | | | if (hdr.network == 13) { |
| 485 | | | |
| 486 | | | |
| 487 | | | |
| 488 | | | |
| 489 | | | |
| 490 | | | if (wth->file_type == WTAP_FILE_PCAP_NOKIA) |
| 491 | | | wth->file_encap = WTAP_ENCAP_ATM_PDUS; |
| 492 | | | else { |
| 493 | | | *err = WTAP_ERR_UNSUPPORTED_ENCAP; |
| 494 | | | *err_info = g_strdup_printf("pcap: network type %u unknown or unsupported", |
| 495 | | | hdr.network); |
| 496 | | | g_free(wth->capture.pcap); |
| 497 | | | return -1; |
| 498 | | | } |
| 499 | | | } |
| 500 | | | |
| 501 | | | return 1; |
| 502 | | | } |
| |