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Ben Lindstromd1aed9c2001-06-10 00:41:18 +00001/*
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"
Damien Miller9f0f5c62001-12-21 14:45:46 +110025RCSID("$OpenBSD: auth-bsdauth.c,v 1.2 2001/12/19 07:18:56 deraadt Exp $");
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000026
27#ifdef BSD_AUTH
28#include "xmalloc.h"
29#include "auth.h"
30#include "log.h"
31
32static void *
33bsdauth_init_ctx(Authctxt *authctxt)
34{
35 return authctxt;
36}
37
38static int
Damien Miller9f0f5c62001-12-21 14:45:46 +110039bsdauth_query(void *ctx, char **name, char **infotxt,
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000040 u_int *numprompts, char ***prompts, u_int **echo_on)
41{
Damien Miller9f0f5c62001-12-21 14:45:46 +110042 Authctxt *authctxt = ctx;
43 char *challenge = NULL;
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000044
Damien Miller9f0f5c62001-12-21 14:45:46 +110045 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 }
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000053
Damien Miller9f0f5c62001-12-21 14:45:46 +110054 if (challenge == NULL) {
55 debug2("bsdauth_query: new bsd auth session");
56 debug3("bsdauth_query: style %s",
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000057 authctxt->style ? authctxt->style : "<default>");
Damien Miller9f0f5c62001-12-21 14:45:46 +110058 authctxt->as = auth_userchallenge(authctxt->user,
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000059 authctxt->style, "auth-ssh", &challenge);
Damien Miller9f0f5c62001-12-21 14:45:46 +110060 if (authctxt->as == NULL)
61 challenge = NULL;
62 debug2("bsdauth_query: <%s>", challenge ? challenge : "empty");
63 }
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000064
Damien Miller9f0f5c62001-12-21 14:45:46 +110065 if (challenge == NULL)
66 return -1;
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000067
Damien Miller9f0f5c62001-12-21 14:45:46 +110068 *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;
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000077}
78
79static int
80bsdauth_respond(void *ctx, u_int numresponses, char **responses)
81{
Damien Miller9f0f5c62001-12-21 14:45:46 +110082 Authctxt *authctxt = ctx;
83 int authok;
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000084
Damien Miller9f0f5c62001-12-21 14:45:46 +110085 if (authctxt->as == 0)
86 error("bsdauth_respond: no bsd auth session");
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000087
Damien Miller9f0f5c62001-12-21 14:45:46 +110088 if (numresponses != 1)
89 return -1;
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000090
Damien Miller9f0f5c62001-12-21 14:45:46 +110091 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;
Ben Lindstromd1aed9c2001-06-10 00:41:18 +000096}
97
98static void
99bsdauth_free_ctx(void *ctx)
100{
Damien Miller9f0f5c62001-12-21 14:45:46 +1100101 Authctxt *authctxt = ctx;
Ben Lindstromd1aed9c2001-06-10 00:41:18 +0000102
Damien Miller9f0f5c62001-12-21 14:45:46 +1100103 if (authctxt && authctxt->as) {
104 auth_close(authctxt->as);
105 authctxt->as = NULL;
106 }
Ben Lindstromd1aed9c2001-06-10 00:41:18 +0000107}
108
109KbdintDevice bsdauth_device = {
110 "bsdauth",
111 bsdauth_init_ctx,
112 bsdauth_query,
113 bsdauth_respond,
114 bsdauth_free_ctx
115};
116#endif