Annotation of src/usr.bin/ssh/auth-bsdauth.c, Revision 1.5.10.1
1.1 markus 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"
1.5.10.1! brad 25: RCSID("$OpenBSD: auth-bsdauth.c,v 1.6 2005/01/19 13:11:47 dtucker Exp $");
1.1 markus 26:
27: #ifdef BSD_AUTH
28: #include "xmalloc.h"
29: #include "auth.h"
30: #include "log.h"
1.3 provos 31: #include "monitor_wrap.h"
1.1 markus 32:
33: static void *
34: bsdauth_init_ctx(Authctxt *authctxt)
35: {
36: return authctxt;
37: }
38:
1.3 provos 39: int
1.2 deraadt 40: bsdauth_query(void *ctx, char **name, char **infotxt,
1.1 markus 41: u_int *numprompts, char ***prompts, u_int **echo_on)
42: {
1.2 deraadt 43: Authctxt *authctxt = ctx;
44: char *challenge = NULL;
1.1 markus 45:
1.2 deraadt 46: if (authctxt->as != NULL) {
47: debug2("bsdauth_query: try reuse session");
48: challenge = auth_getitem(authctxt->as, AUTHV_CHALLENGE);
49: if (challenge == NULL) {
50: auth_close(authctxt->as);
51: authctxt->as = NULL;
52: }
53: }
54:
55: if (challenge == NULL) {
56: debug2("bsdauth_query: new bsd auth session");
57: debug3("bsdauth_query: style %s",
1.1 markus 58: authctxt->style ? authctxt->style : "<default>");
1.2 deraadt 59: authctxt->as = auth_userchallenge(authctxt->user,
1.4 deraadt 60: authctxt->style, "auth-ssh", &challenge);
1.2 deraadt 61: if (authctxt->as == NULL)
62: challenge = NULL;
63: debug2("bsdauth_query: <%s>", challenge ? challenge : "empty");
64: }
65:
66: if (challenge == NULL)
67: return -1;
68:
1.4 deraadt 69: *name = xstrdup("");
70: *infotxt = xstrdup("");
1.2 deraadt 71: *numprompts = 1;
1.5 deraadt 72: *prompts = xmalloc(*numprompts * sizeof(char *));
1.2 deraadt 73: *echo_on = xmalloc(*numprompts * sizeof(u_int));
74: (*echo_on)[0] = 0;
75: (*prompts)[0] = xstrdup(challenge);
1.1 markus 76:
1.2 deraadt 77: return 0;
1.1 markus 78: }
79:
1.3 provos 80: int
1.1 markus 81: bsdauth_respond(void *ctx, u_int numresponses, char **responses)
82: {
1.2 deraadt 83: Authctxt *authctxt = ctx;
84: int authok;
1.5.10.1! brad 85:
! 86: if (!authctxt->valid)
! 87: return -1;
1.1 markus 88:
1.2 deraadt 89: if (authctxt->as == 0)
90: error("bsdauth_respond: no bsd auth session");
91:
92: if (numresponses != 1)
93: return -1;
94:
95: authok = auth_userresponse(authctxt->as, responses[0], 0);
96: authctxt->as = NULL;
97: debug3("bsdauth_respond: <%s> = <%d>", responses[0], authok);
98:
99: return (authok == 0) ? -1 : 0;
1.1 markus 100: }
101:
102: static void
103: bsdauth_free_ctx(void *ctx)
104: {
1.2 deraadt 105: Authctxt *authctxt = ctx;
1.1 markus 106:
1.2 deraadt 107: if (authctxt && authctxt->as) {
108: auth_close(authctxt->as);
109: authctxt->as = NULL;
110: }
1.1 markus 111: }
112:
113: KbdintDevice bsdauth_device = {
114: "bsdauth",
115: bsdauth_init_ctx,
116: bsdauth_query,
117: bsdauth_respond,
1.3 provos 118: bsdauth_free_ctx
119: };
120:
121: KbdintDevice mm_bsdauth_device = {
122: "bsdauth",
123: bsdauth_init_ctx,
124: mm_bsdauth_query,
125: mm_bsdauth_respond,
1.1 markus 126: bsdauth_free_ctx
127: };
128: #endif