Annotation of src/usr.bin/ssh/auth-bsdauth.c, Revision 1.9
1.9 ! djm 1: /* $OpenBSD$ */
1.1 markus 2: /*
3: * Copyright (c) 2001 Markus Friedl. All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: *
14: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24: */
25: #include "includes.h"
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;
1.8 djm 72: *prompts = xcalloc(*numprompts, sizeof(char *));
73: *echo_on = xcalloc(*numprompts, sizeof(u_int));
1.2 deraadt 74: (*prompts)[0] = xstrdup(challenge);
1.1 markus 75:
1.2 deraadt 76: return 0;
1.1 markus 77: }
78:
1.3 provos 79: int
1.1 markus 80: bsdauth_respond(void *ctx, u_int numresponses, char **responses)
81: {
1.2 deraadt 82: Authctxt *authctxt = ctx;
83: int authok;
1.6 dtucker 84:
85: if (!authctxt->valid)
86: return -1;
1.1 markus 87:
1.2 deraadt 88: if (authctxt->as == 0)
89: error("bsdauth_respond: no bsd auth session");
90:
91: if (numresponses != 1)
92: return -1;
93:
94: authok = auth_userresponse(authctxt->as, responses[0], 0);
95: authctxt->as = NULL;
96: debug3("bsdauth_respond: <%s> = <%d>", responses[0], authok);
97:
98: return (authok == 0) ? -1 : 0;
1.1 markus 99: }
100:
101: static void
102: bsdauth_free_ctx(void *ctx)
103: {
1.2 deraadt 104: Authctxt *authctxt = ctx;
1.1 markus 105:
1.2 deraadt 106: if (authctxt && authctxt->as) {
107: auth_close(authctxt->as);
108: authctxt->as = NULL;
109: }
1.1 markus 110: }
111:
112: KbdintDevice bsdauth_device = {
113: "bsdauth",
114: bsdauth_init_ctx,
115: bsdauth_query,
116: bsdauth_respond,
1.3 provos 117: bsdauth_free_ctx
118: };
119:
120: KbdintDevice mm_bsdauth_device = {
121: "bsdauth",
122: bsdauth_init_ctx,
123: mm_bsdauth_query,
124: mm_bsdauth_respond,
1.1 markus 125: bsdauth_free_ctx
126: };
127: #endif