Annotation of src/usr.bin/ssh/auth-bsdauth.c, Revision 1.8
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"
25:
26: #ifdef BSD_AUTH
27: #include "xmalloc.h"
28: #include "auth.h"
29: #include "log.h"
1.3 provos 30: #include "monitor_wrap.h"
1.1 markus 31:
32: static void *
33: bsdauth_init_ctx(Authctxt *authctxt)
34: {
35: return authctxt;
36: }
37:
1.3 provos 38: int
1.2 deraadt 39: bsdauth_query(void *ctx, char **name, char **infotxt,
1.1 markus 40: u_int *numprompts, char ***prompts, u_int **echo_on)
41: {
1.2 deraadt 42: Authctxt *authctxt = ctx;
43: char *challenge = NULL;
1.1 markus 44:
1.2 deraadt 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",
1.1 markus 57: authctxt->style ? authctxt->style : "<default>");
1.2 deraadt 58: authctxt->as = auth_userchallenge(authctxt->user,
1.4 deraadt 59: authctxt->style, "auth-ssh", &challenge);
1.2 deraadt 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:
1.4 deraadt 68: *name = xstrdup("");
69: *infotxt = xstrdup("");
1.2 deraadt 70: *numprompts = 1;
1.8 ! djm 71: *prompts = xcalloc(*numprompts, sizeof(char *));
! 72: *echo_on = xcalloc(*numprompts, sizeof(u_int));
1.2 deraadt 73: (*prompts)[0] = xstrdup(challenge);
1.1 markus 74:
1.2 deraadt 75: return 0;
1.1 markus 76: }
77:
1.3 provos 78: int
1.1 markus 79: bsdauth_respond(void *ctx, u_int numresponses, char **responses)
80: {
1.2 deraadt 81: Authctxt *authctxt = ctx;
82: int authok;
1.6 dtucker 83:
84: if (!authctxt->valid)
85: return -1;
1.1 markus 86:
1.2 deraadt 87: if (authctxt->as == 0)
88: error("bsdauth_respond: no bsd auth session");
89:
90: if (numresponses != 1)
91: return -1;
92:
93: authok = auth_userresponse(authctxt->as, responses[0], 0);
94: authctxt->as = NULL;
95: debug3("bsdauth_respond: <%s> = <%d>", responses[0], authok);
96:
97: return (authok == 0) ? -1 : 0;
1.1 markus 98: }
99:
100: static void
101: bsdauth_free_ctx(void *ctx)
102: {
1.2 deraadt 103: Authctxt *authctxt = ctx;
1.1 markus 104:
1.2 deraadt 105: if (authctxt && authctxt->as) {
106: auth_close(authctxt->as);
107: authctxt->as = NULL;
108: }
1.1 markus 109: }
110:
111: KbdintDevice bsdauth_device = {
112: "bsdauth",
113: bsdauth_init_ctx,
114: bsdauth_query,
115: bsdauth_respond,
1.3 provos 116: bsdauth_free_ctx
117: };
118:
119: KbdintDevice mm_bsdauth_device = {
120: "bsdauth",
121: bsdauth_init_ctx,
122: mm_bsdauth_query,
123: mm_bsdauth_respond,
1.1 markus 124: bsdauth_free_ctx
125: };
126: #endif