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3c0ef626 | 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" | |
25 | RCSID("$OpenBSD: auth-bsdauth.c,v 1.1 2001/05/18 14:13:28 markus Exp $"); | |
26 | ||
27 | #ifdef BSD_AUTH | |
28 | #include "xmalloc.h" | |
29 | #include "auth.h" | |
30 | #include "log.h" | |
31 | ||
32 | static void * | |
33 | bsdauth_init_ctx(Authctxt *authctxt) | |
34 | { | |
35 | return authctxt; | |
36 | } | |
37 | ||
38 | static int | |
39 | bsdauth_query(void *ctx, char **name, char **infotxt, | |
40 | u_int *numprompts, char ***prompts, u_int **echo_on) | |
41 | { | |
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", | |
57 | authctxt->style ? authctxt->style : "<default>"); | |
58 | authctxt->as = auth_userchallenge(authctxt->user, | |
59 | authctxt->style, "auth-ssh", &challenge); | |
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 | ||
68 | *name = xstrdup(""); | |
69 | *infotxt = xstrdup(""); | |
70 | *numprompts = 1; | |
71 | *prompts = xmalloc(*numprompts * sizeof(char*)); | |
72 | *echo_on = xmalloc(*numprompts * sizeof(u_int)); | |
73 | (*echo_on)[0] = 0; | |
74 | (*prompts)[0] = xstrdup(challenge); | |
75 | ||
76 | return 0; | |
77 | } | |
78 | ||
79 | static int | |
80 | bsdauth_respond(void *ctx, u_int numresponses, char **responses) | |
81 | { | |
82 | Authctxt *authctxt = ctx; | |
83 | int authok; | |
84 | ||
85 | if (authctxt->as == 0) | |
86 | error("bsdauth_respond: no bsd auth session"); | |
87 | ||
88 | if (numresponses != 1) | |
89 | return -1; | |
90 | ||
91 | authok = auth_userresponse(authctxt->as, responses[0], 0); | |
92 | authctxt->as = NULL; | |
93 | debug3("bsdauth_respond: <%s> = <%d>", responses[0], authok); | |
94 | ||
95 | return (authok == 0) ? -1 : 0; | |
96 | } | |
97 | ||
98 | static void | |
99 | bsdauth_free_ctx(void *ctx) | |
100 | { | |
101 | Authctxt *authctxt = ctx; | |
102 | ||
103 | if (authctxt && authctxt->as) { | |
104 | auth_close(authctxt->as); | |
105 | authctxt->as = NULL; | |
106 | } | |
107 | } | |
108 | ||
109 | KbdintDevice bsdauth_device = { | |
110 | "bsdauth", | |
111 | bsdauth_init_ctx, | |
112 | bsdauth_query, | |
113 | bsdauth_respond, | |
114 | bsdauth_free_ctx | |
115 | }; | |
116 | #endif |