diff options
Diffstat (limited to 'src/lib/libssl/ssl_lib.c')
| -rw-r--r-- | src/lib/libssl/ssl_lib.c | 157 |
1 files changed, 1 insertions, 156 deletions
diff --git a/src/lib/libssl/ssl_lib.c b/src/lib/libssl/ssl_lib.c index 649b238bd9..6f31d6dcdf 100644 --- a/src/lib/libssl/ssl_lib.c +++ b/src/lib/libssl/ssl_lib.c | |||
| @@ -1,4 +1,4 @@ | |||
| 1 | /* $OpenBSD: ssl_lib.c,v 1.151 2017/01/26 00:42:44 jsing Exp $ */ | 1 | /* $OpenBSD: ssl_lib.c,v 1.152 2017/01/26 06:01:44 jsing Exp $ */ |
| 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| 3 | * All rights reserved. | 3 | * All rights reserved. |
| 4 | * | 4 | * |
| @@ -2492,161 +2492,6 @@ SSL_get_version(const SSL *s) | |||
| 2492 | return ssl_version_string(s->version); | 2492 | return ssl_version_string(s->version); |
| 2493 | } | 2493 | } |
| 2494 | 2494 | ||
| 2495 | static int | ||
| 2496 | ssl_clamp_version_range(uint16_t *min_ver, uint16_t *max_ver, | ||
| 2497 | uint16_t clamp_min, uint16_t clamp_max) | ||
| 2498 | { | ||
| 2499 | if (clamp_min > clamp_max || *min_ver > *max_ver) | ||
| 2500 | return 0; | ||
| 2501 | if (clamp_max < *min_ver || clamp_min > *max_ver) | ||
| 2502 | return 0; | ||
| 2503 | |||
| 2504 | if (*min_ver < clamp_min) | ||
| 2505 | *min_ver = clamp_min; | ||
| 2506 | if (*max_ver > clamp_max) | ||
| 2507 | *max_ver = clamp_max; | ||
| 2508 | |||
| 2509 | return 1; | ||
| 2510 | } | ||
| 2511 | |||
| 2512 | int | ||
| 2513 | ssl_enabled_version_range(SSL *s, uint16_t *min_ver, uint16_t *max_ver) | ||
| 2514 | { | ||
| 2515 | uint16_t min_version, max_version; | ||
| 2516 | |||
| 2517 | /* | ||
| 2518 | * The enabled versions have to be a contiguous range, which means we | ||
| 2519 | * cannot enable and disable single versions at our whim, even though | ||
| 2520 | * this is what the OpenSSL flags allow. The historical way this has | ||
| 2521 | * been handled is by making a flag mean that all higher versions | ||
| 2522 | * are disabled, if any version lower than the flag is enabled. | ||
| 2523 | */ | ||
| 2524 | |||
| 2525 | min_version = 0; | ||
| 2526 | max_version = TLS1_2_VERSION; | ||
| 2527 | |||
| 2528 | if ((s->internal->options & SSL_OP_NO_TLSv1) == 0) | ||
| 2529 | min_version = TLS1_VERSION; | ||
| 2530 | else if ((s->internal->options & SSL_OP_NO_TLSv1_1) == 0) | ||
| 2531 | min_version = TLS1_1_VERSION; | ||
| 2532 | else if ((s->internal->options & SSL_OP_NO_TLSv1_2) == 0) | ||
| 2533 | min_version = TLS1_2_VERSION; | ||
| 2534 | |||
| 2535 | if ((s->internal->options & SSL_OP_NO_TLSv1_2) && min_version < TLS1_2_VERSION) | ||
| 2536 | max_version = TLS1_1_VERSION; | ||
| 2537 | if ((s->internal->options & SSL_OP_NO_TLSv1_1) && min_version < TLS1_1_VERSION) | ||
| 2538 | max_version = TLS1_VERSION; | ||
| 2539 | if ((s->internal->options & SSL_OP_NO_TLSv1) && min_version < TLS1_VERSION) | ||
| 2540 | max_version = 0; | ||
| 2541 | |||
| 2542 | /* Everything has been disabled... */ | ||
| 2543 | if (min_version == 0 || max_version == 0) | ||
| 2544 | return 0; | ||
| 2545 | |||
| 2546 | /* Limit to configured version range. */ | ||
| 2547 | if (!ssl_clamp_version_range(&min_version, &max_version, | ||
| 2548 | s->internal->min_version, s->internal->max_version)) | ||
| 2549 | return 0; | ||
| 2550 | |||
| 2551 | if (min_ver != NULL) | ||
| 2552 | *min_ver = min_version; | ||
| 2553 | if (max_ver != NULL) | ||
| 2554 | *max_ver = max_version; | ||
| 2555 | |||
| 2556 | return 1; | ||
| 2557 | } | ||
| 2558 | |||
| 2559 | int | ||
| 2560 | ssl_supported_version_range(SSL *s, uint16_t *min_ver, uint16_t *max_ver) | ||
| 2561 | { | ||
| 2562 | uint16_t min_version, max_version; | ||
| 2563 | |||
| 2564 | /* DTLS cannot currently be disabled... */ | ||
| 2565 | if (SSL_IS_DTLS(s)) { | ||
| 2566 | min_version = max_version = DTLS1_VERSION; | ||
| 2567 | goto done; | ||
| 2568 | } | ||
| 2569 | |||
| 2570 | if (!ssl_enabled_version_range(s, &min_version, &max_version)) | ||
| 2571 | return 0; | ||
| 2572 | |||
| 2573 | /* Limit to the versions supported by this method. */ | ||
| 2574 | if (!ssl_clamp_version_range(&min_version, &max_version, | ||
| 2575 | s->method->internal->min_version, | ||
| 2576 | s->method->internal->max_version)) | ||
| 2577 | return 0; | ||
| 2578 | |||
| 2579 | done: | ||
| 2580 | if (min_ver != NULL) | ||
| 2581 | *min_ver = min_version; | ||
| 2582 | if (max_ver != NULL) | ||
| 2583 | *max_ver = max_version; | ||
| 2584 | |||
| 2585 | return 1; | ||
| 2586 | } | ||
| 2587 | |||
| 2588 | int | ||
| 2589 | ssl_max_shared_version(SSL *s, uint16_t peer_ver, uint16_t *max_ver) | ||
| 2590 | { | ||
| 2591 | uint16_t min_version, max_version, shared_version; | ||
| 2592 | |||
| 2593 | *max_ver = 0; | ||
| 2594 | |||
| 2595 | if (SSL_IS_DTLS(s)) { | ||
| 2596 | if (peer_ver >= DTLS1_VERSION) { | ||
| 2597 | *max_ver = DTLS1_VERSION; | ||
| 2598 | return 1; | ||
| 2599 | } | ||
| 2600 | return 0; | ||
| 2601 | } | ||
| 2602 | |||
| 2603 | if (peer_ver >= TLS1_2_VERSION) | ||
| 2604 | shared_version = TLS1_2_VERSION; | ||
| 2605 | else if (peer_ver >= TLS1_1_VERSION) | ||
| 2606 | shared_version = TLS1_1_VERSION; | ||
| 2607 | else if (peer_ver >= TLS1_VERSION) | ||
| 2608 | shared_version = TLS1_VERSION; | ||
| 2609 | else | ||
| 2610 | return 0; | ||
| 2611 | |||
| 2612 | if (!ssl_supported_version_range(s, &min_version, &max_version)) | ||
| 2613 | return 0; | ||
| 2614 | |||
| 2615 | if (shared_version < min_version) | ||
| 2616 | return 0; | ||
| 2617 | |||
| 2618 | if (shared_version > max_version) | ||
| 2619 | shared_version = max_version; | ||
| 2620 | |||
| 2621 | *max_ver = shared_version; | ||
| 2622 | |||
| 2623 | return 1; | ||
| 2624 | } | ||
| 2625 | |||
| 2626 | uint16_t | ||
| 2627 | ssl_max_server_version(SSL *s) | ||
| 2628 | { | ||
| 2629 | uint16_t max_version, min_version = 0; | ||
| 2630 | |||
| 2631 | if (SSL_IS_DTLS(s)) | ||
| 2632 | return (DTLS1_VERSION); | ||
| 2633 | |||
| 2634 | if (!ssl_enabled_version_range(s, &min_version, &max_version)) | ||
| 2635 | return 0; | ||
| 2636 | |||
| 2637 | /* | ||
| 2638 | * Limit to the versions supported by this method. The SSL method | ||
| 2639 | * will be changed during version negotiation, as such we want to | ||
| 2640 | * use the SSL method from the context. | ||
| 2641 | */ | ||
| 2642 | if (!ssl_clamp_version_range(&min_version, &max_version, | ||
| 2643 | s->ctx->method->internal->min_version, | ||
| 2644 | s->ctx->method->internal->max_version)) | ||
| 2645 | return 0; | ||
| 2646 | |||
| 2647 | return (max_version); | ||
| 2648 | } | ||
| 2649 | |||
| 2650 | SSL * | 2495 | SSL * |
| 2651 | SSL_dup(SSL *s) | 2496 | SSL_dup(SSL *s) |
| 2652 | { | 2497 | { |
