Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 1999 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 | * 3. All advertising materials mentioning features or use of this software |
| 13 | * must display the following acknowledgement: |
| 14 | * This product includes software developed by Markus Friedl. |
| 15 | * 4. The name of the author may not be used to endorse or promote products |
| 16 | * derived from this software without specific prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 28 | */ |
| 29 | |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 30 | #include "includes.h" |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame^] | 31 | RCSID("$Id: compat.c,v 1.7 2000/04/12 10:17:39 damien Exp $"); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 32 | |
| 33 | #include "ssh.h" |
Damien Miller | 33b1356 | 2000-04-04 14:38:59 +1000 | [diff] [blame] | 34 | #include "packet.h" |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame^] | 35 | #include "xmalloc.h" |
| 36 | #include "compat.h" |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 37 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 38 | int compat13 = 0; |
Damien Miller | 33b1356 | 2000-04-04 14:38:59 +1000 | [diff] [blame] | 39 | int compat20 = 0; |
| 40 | int datafellows = 0; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 41 | |
| 42 | void |
Damien Miller | 33b1356 | 2000-04-04 14:38:59 +1000 | [diff] [blame] | 43 | enable_compat20(void) |
| 44 | { |
Damien Miller | 1383bd8 | 2000-04-06 12:32:37 +1000 | [diff] [blame] | 45 | verbose("Enabling compatibility mode for protocol 2.0"); |
| 46 | compat20 = 1; |
| 47 | packet_set_ssh2_format(); |
Damien Miller | 33b1356 | 2000-04-04 14:38:59 +1000 | [diff] [blame] | 48 | } |
| 49 | void |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 50 | enable_compat13(void) |
| 51 | { |
| 52 | verbose("Enabling compatibility mode for protocol 1.3"); |
| 53 | compat13 = 1; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 54 | } |
Damien Miller | 33b1356 | 2000-04-04 14:38:59 +1000 | [diff] [blame] | 55 | /* datafellows bug compatibility */ |
| 56 | void |
| 57 | compat_datafellows(const char *version) |
| 58 | { |
| 59 | int i; |
| 60 | size_t len; |
| 61 | static const char *check[] = { |
| 62 | "2.0.1", |
Damien Miller | efb4afe | 2000-04-12 18:45:05 +1000 | [diff] [blame] | 63 | "2.1.0", |
Damien Miller | 33b1356 | 2000-04-04 14:38:59 +1000 | [diff] [blame] | 64 | NULL |
| 65 | }; |
| 66 | for (i = 0; check[i]; i++) { |
| 67 | len = strlen(check[i]); |
| 68 | if (strlen(version) >= len && |
| 69 | (strncmp(version, check[i], len) == 0)) { |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame^] | 70 | verbose("datafellows: %.200s", version); |
Damien Miller | 33b1356 | 2000-04-04 14:38:59 +1000 | [diff] [blame] | 71 | datafellows = 1; |
| 72 | return; |
| 73 | } |
| 74 | } |
| 75 | } |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame^] | 76 | |
| 77 | #define SEP "," |
| 78 | int |
| 79 | proto_spec(const char *spec) |
| 80 | { |
| 81 | char *s = xstrdup(spec); |
| 82 | char *p; |
| 83 | int ret = SSH_PROTO_UNKNOWN; |
| 84 | |
| 85 | for ((p = strtok(s, SEP)); p; (p = strtok(NULL, SEP))) { |
| 86 | switch(atoi(p)) { |
| 87 | case 1: |
| 88 | if (ret == SSH_PROTO_UNKNOWN) |
| 89 | ret |= SSH_PROTO_1_PREFERRED; |
| 90 | ret |= SSH_PROTO_1; |
| 91 | break; |
| 92 | case 2: |
| 93 | ret |= SSH_PROTO_2; |
| 94 | break; |
| 95 | default: |
| 96 | log("ignoring bad proto spec: '%s'.", p); |
| 97 | break; |
| 98 | } |
| 99 | } |
| 100 | xfree(s); |
| 101 | return ret; |
| 102 | } |