| 411 | } |
| 412 | |
| 413 | static int |
| 414 | ParseFtpEprtCommand(struct libalias *la, char *sptr, int dlen) |
| 415 | { |
| 416 | char ch, delim; |
| 417 | int i, state; |
| 418 | u_int32_t addr; |
| 419 | u_short port; |
| 420 | u_int8_t octet; |
| 421 | |
| 422 | /* Format: "EPRT |1|A.D.D.R|PORT|". */ |
| 423 | |
| 424 | /* Return if data length is too short. */ |
| 425 | if (dlen < 18) |
| 426 | return (0); |
| 427 | |
| 428 | if (strncasecmp("EPRT ", sptr, 5)) |
| 429 | return (0); |
| 430 | |
| 431 | addr = port = octet = 0; |
| 432 | delim = '|'; /* XXX gcc -Wuninitialized */ |
| 433 | state = 0; |
| 434 | for (i = 5; i < dlen; i++) { |
| 435 | ch = sptr[i]; |
| 436 | switch (state) { |
| 437 | case 0: |
| 438 | if (!isspace(ch)) { |
| 439 | delim = ch; |
| 440 | state++; |
| 441 | } |
| 442 | break; |
| 443 | case 1: |
| 444 | if (ch == '1') /* IPv4 address */ |
| 445 | state++; |
| 446 | else |
| 447 | return (0); |
| 448 | break; |
| 449 | case 2: |
| 450 | if (ch == delim) |
| 451 | state++; |
| 452 | else |
| 453 | return (0); |
| 454 | break; |
| 455 | case 3: |
| 456 | case 5: |
| 457 | case 7: |
| 458 | case 9: |
| 459 | if (isdigit(ch)) { |
| 460 | octet = ch - '0'; |
| 461 | state++; |
| 462 | } else |
| 463 | return (0); |
| 464 | break; |
| 465 | case 4: |
| 466 | case 6: |
| 467 | case 8: |
| 468 | case 10: |
| 469 | if (isdigit(ch)) |
| 470 | octet = 10 * octet + ch - '0'; |
no test coverage detected