| | 1 | /* |
| | 2 | * Copyright (c) 1999,2000 Markus Friedl. All rights reserved. |
| | 3 | * |
| | 4 | * Redistribution and use in source and binary forms, with or without |
| | 5 | * modification, are permitted provided that the following conditions |
| | 6 | * are met: |
| | 7 | * 1. Redistributions of source code must retain the above copyright |
| | 8 | * notice, this list of conditions and the following disclaimer. |
| | 9 | * 2. Redistributions in binary form must reproduce the above copyright |
| | 10 | * notice, this list of conditions and the following disclaimer in the |
| | 11 | * documentation and/or other materials provided with the distribution. |
| | 12 | * |
| | 13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| | 14 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| | 15 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| | 16 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| | 17 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| | 18 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| | 19 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| | 20 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| | 21 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| | 22 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| | 23 | */ |
| | 24 | |
| | 25 | #include "includes.h" |
| | 26 | RCSID("$OpenBSD: compat.c,v 1.23 2000/09/07 21:13:37 markus Exp $"); |
| | 27 | |
| | 28 | #include "ssh.h" |
| | 29 | #include "packet.h" |
| | 30 | #include "xmalloc.h" |
| | 31 | #include "compat.h" |
| | 32 | |
| | 33 | int compat13 = 0; |
| | 34 | int compat20 = 0; |
| | 35 | int datafellows = 0; |
| | 36 | |
| | 37 | void |
| | 38 | enable_compat20(void) |
| | 39 | { |
| | 40 | verbose("Enabling compatibility mode for protocol 2.0"); |
| | 41 | compat20 = 1; |
| | 42 | } |
| | 43 | void |
| | 44 | enable_compat13(void) |
| | 45 | { |
| | 46 | verbose("Enabling compatibility mode for protocol 1.3"); |
| | 47 | compat13 = 1; |
| | 48 | } |
| | 49 | /* datafellows bug compatibility */ |
| | 50 | void |
| | 51 | compat_datafellows(const char *version) |
| | 52 | { |
| | 53 | int i; |
| | 54 | size_t len; |
| | 55 | struct { |
| | 56 | char *version; |
| | 57 | int bugs; |
| | 58 | } check[] = { |
| | 59 | {"2.1.0", SSH_BUG_SIGBLOB|SSH_BUG_HMAC}, |
| | 60 | {"2.0.1", SSH_BUG_SIGBLOB|SSH_BUG_HMAC|SSH_BUG_PUBKEYAUTH|SSH_BUG_X11FWD}, |
| | 61 | {"2.", SSH_BUG_HMAC|SSH_COMPAT_SESSIONID_ENCODING}, |
| | 62 | {NULL, 0} |
| | 63 | }; |
| | 64 | /* process table, return first match */ |
| | 65 | for (i = 0; check[i].version; i++) { |
| | 66 | len = strlen(check[i].version); |
| | 67 | if (strlen(version) >= len && |
| | 68 | (strncmp(version, check[i].version, len) == 0)) { |
| | 69 | verbose("datafellows: %.200s", version); |
| | 70 | datafellows = check[i].bugs; |
| | 71 | return; |
| | 72 | } |
| | 73 | } |
| | 74 | } |
| | 75 | |
| | 76 | #define SEP "," |
| | 77 | int |
| | 78 | proto_spec(const char *spec) |
| | 79 | { |
| | 80 | char *s, *p, *q; |
| | 81 | int ret = SSH_PROTO_UNKNOWN; |
| | 82 | |
| | 83 | if (spec == NULL) |
| | 84 | return ret; |
| | 85 | q = s = xstrdup(spec); |
| | 86 | for ((p = strsep(&q, SEP)); p && *p != '\0'; (p = strsep(&q, SEP))) { |
| | 87 | switch(atoi(p)) { |
| | 88 | case 1: |
| | 89 | if (ret == SSH_PROTO_UNKNOWN) |
| | 90 | ret |= SSH_PROTO_1_PREFERRED; |
| | 91 | ret |= SSH_PROTO_1; |
| | 92 | break; |
| | 93 | case 2: |
| | 94 | ret |= SSH_PROTO_2; |
| | 95 | break; |
| | 96 | default: |
| | 97 | log("ignoring bad proto spec: '%s'.", p); |
| | 98 | break; |
| | 99 | } |
| | 100 | } |
| | 101 | xfree(s); |
| | 102 | return ret; |
| | 103 | } |
andersk / openssh.git / blame_incremental