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bf093080 | 1 | /* |
2 | * Copyright (c) 2001 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 | #include "includes.h" | |
bf093080 | 25 | |
26 | #ifdef BSD_AUTH | |
27 | #include "xmalloc.h" | |
28 | #include "auth.h" | |
29 | #include "log.h" | |
1853d1ef | 30 | #include "monitor_wrap.h" |
bf093080 | 31 | |
32 | static void * | |
33 | bsdauth_init_ctx(Authctxt *authctxt) | |
34 | { | |
35 | return authctxt; | |
36 | } | |
37 | ||
1853d1ef | 38 | int |
184eed6a | 39 | bsdauth_query(void *ctx, char **name, char **infotxt, |
bf093080 | 40 | u_int *numprompts, char ***prompts, u_int **echo_on) |
41 | { | |
184eed6a | 42 | Authctxt *authctxt = ctx; |
43 | char *challenge = NULL; | |
44 | ||
45 | if (authctxt->as != NULL) { | |
46 | debug2("bsdauth_query: try reuse session"); | |
47 | challenge = auth_getitem(authctxt->as, AUTHV_CHALLENGE); | |
48 | if (challenge == NULL) { | |
49 | auth_close(authctxt->as); | |
50 | authctxt->as = NULL; | |
51 | } | |
52 | } | |
53 | ||
54 | if (challenge == NULL) { | |
55 | debug2("bsdauth_query: new bsd auth session"); | |
56 | debug3("bsdauth_query: style %s", | |
bf093080 | 57 | authctxt->style ? authctxt->style : "<default>"); |
184eed6a | 58 | authctxt->as = auth_userchallenge(authctxt->user, |
7203d6bb | 59 | authctxt->style, "auth-ssh", &challenge); |
184eed6a | 60 | if (authctxt->as == NULL) |
61 | challenge = NULL; | |
62 | debug2("bsdauth_query: <%s>", challenge ? challenge : "empty"); | |
63 | } | |
64 | ||
65 | if (challenge == NULL) | |
66 | return -1; | |
67 | ||
7203d6bb | 68 | *name = xstrdup(""); |
69 | *infotxt = xstrdup(""); | |
184eed6a | 70 | *numprompts = 1; |
343288b8 | 71 | *prompts = xmalloc(*numprompts * sizeof(char *)); |
184eed6a | 72 | *echo_on = xmalloc(*numprompts * sizeof(u_int)); |
73 | (*echo_on)[0] = 0; | |
74 | (*prompts)[0] = xstrdup(challenge); | |
75 | ||
76 | return 0; | |
bf093080 | 77 | } |
78 | ||
1853d1ef | 79 | int |
bf093080 | 80 | bsdauth_respond(void *ctx, u_int numresponses, char **responses) |
81 | { | |
184eed6a | 82 | Authctxt *authctxt = ctx; |
83 | int authok; | |
84 | ||
37ea4f91 | 85 | if (!authctxt->valid) |
86 | return -1; | |
87 | ||
184eed6a | 88 | if (authctxt->as == 0) |
89 | error("bsdauth_respond: no bsd auth session"); | |
bf093080 | 90 | |
184eed6a | 91 | if (numresponses != 1) |
92 | return -1; | |
bf093080 | 93 | |
184eed6a | 94 | authok = auth_userresponse(authctxt->as, responses[0], 0); |
95 | authctxt->as = NULL; | |
96 | debug3("bsdauth_respond: <%s> = <%d>", responses[0], authok); | |
bf093080 | 97 | |
184eed6a | 98 | return (authok == 0) ? -1 : 0; |
bf093080 | 99 | } |
100 | ||
101 | static void | |
102 | bsdauth_free_ctx(void *ctx) | |
103 | { | |
184eed6a | 104 | Authctxt *authctxt = ctx; |
bf093080 | 105 | |
184eed6a | 106 | if (authctxt && authctxt->as) { |
107 | auth_close(authctxt->as); | |
108 | authctxt->as = NULL; | |
109 | } | |
bf093080 | 110 | } |
111 | ||
112 | KbdintDevice bsdauth_device = { | |
113 | "bsdauth", | |
114 | bsdauth_init_ctx, | |
115 | bsdauth_query, | |
116 | bsdauth_respond, | |
117 | bsdauth_free_ctx | |
118 | }; | |
1853d1ef | 119 | |
120 | KbdintDevice mm_bsdauth_device = { | |
121 | "bsdauth", | |
122 | bsdauth_init_ctx, | |
123 | mm_bsdauth_query, | |
124 | mm_bsdauth_respond, | |
125 | bsdauth_free_ctx | |
126 | }; | |
bf093080 | 127 | #endif |