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aa3378df | 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 | ||
8efc0c15 | 30 | #include "includes.h" |
31 | RCSID("$Id$"); | |
32 | ||
33 | #include "ssh.h" | |
7e7327a1 | 34 | #include "packet.h" |
a8be9f80 | 35 | #include "xmalloc.h" |
36 | #include "compat.h" | |
8efc0c15 | 37 | |
5260325f | 38 | int compat13 = 0; |
7e7327a1 | 39 | int compat20 = 0; |
40 | int datafellows = 0; | |
5260325f | 41 | |
7e7327a1 | 42 | void |
43 | enable_compat20(void) | |
44 | { | |
8ce64345 | 45 | verbose("Enabling compatibility mode for protocol 2.0"); |
46 | compat20 = 1; | |
47 | packet_set_ssh2_format(); | |
7e7327a1 | 48 | } |
5260325f | 49 | void |
50 | enable_compat13(void) | |
51 | { | |
52 | verbose("Enabling compatibility mode for protocol 1.3"); | |
53 | compat13 = 1; | |
8efc0c15 | 54 | } |
7e7327a1 | 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", | |
e78a59f5 | 63 | "2.1.0", |
7e7327a1 | 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)) { | |
a8be9f80 | 70 | verbose("datafellows: %.200s", version); |
7e7327a1 | 71 | datafellows = 1; |
72 | return; | |
73 | } | |
74 | } | |
75 | } | |
a8be9f80 | 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 | } |