Annotation of src/usr.bin/ssh/auth-skey.c, Revision 1.17.2.3
1.8 deraadt 1: /*
1.12 markus 2: * Copyright (c) 2001 Markus Friedl. All rights reserved.
1.8 deraadt 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: */
1.12 markus 24: #include "includes.h"
1.17.2.3! jason 25: RCSID("$OpenBSD: auth-skey.c,v 1.19 2002/06/19 00:27:55 deraadt Exp $");
1.12 markus 26:
27: #ifdef SKEY
1.8 deraadt 28:
1.12 markus 29: #include <skey.h>
1.1 markus 30:
1.12 markus 31: #include "xmalloc.h"
1.10 markus 32: #include "auth.h"
1.17 provos 33: #include "monitor_wrap.h"
1.4 markus 34:
1.12 markus 35: static void *
36: skey_init_ctx(Authctxt *authctxt)
37: {
38: return authctxt;
39: }
40:
1.17.2.1 jason 41: int
1.13 deraadt 42: skey_query(void *ctx, char **name, char **infotxt,
1.12 markus 43: u_int* numprompts, char ***prompts, u_int **echo_on)
1.10 markus 44: {
1.12 markus 45: Authctxt *authctxt = ctx;
46: char challenge[1024], *p;
47: int len;
48: struct skey skey;
49:
1.10 markus 50: if (skeychallenge(&skey, authctxt->user, challenge) == -1)
1.12 markus 51: return -1;
52:
1.17.2.3! jason 53: *name = xstrdup("");
! 54: *infotxt = xstrdup("");
1.12 markus 55: *numprompts = 1;
56: *prompts = xmalloc(*numprompts * sizeof(char*));
57: *echo_on = xmalloc(*numprompts * sizeof(u_int));
58: (*echo_on)[0] = 0;
59:
1.17 provos 60: len = strlen(challenge) + strlen(SKEY_PROMPT) + 1;
1.12 markus 61: p = xmalloc(len);
1.16 markus 62: strlcpy(p, challenge, len);
1.17 provos 63: strlcat(p, SKEY_PROMPT, len);
1.12 markus 64: (*prompts)[0] = p;
65:
66: return 0;
1.10 markus 67: }
1.12 markus 68:
1.17.2.1 jason 69: int
1.12 markus 70: skey_respond(void *ctx, u_int numresponses, char **responses)
1.4 markus 71: {
1.12 markus 72: Authctxt *authctxt = ctx;
1.13 deraadt 73:
1.12 markus 74: if (authctxt->valid &&
1.13 deraadt 75: numresponses == 1 &&
1.10 markus 76: skey_haskey(authctxt->pw->pw_name) == 0 &&
1.12 markus 77: skey_passcheck(authctxt->pw->pw_name, responses[0]) != -1)
78: return 0;
79: return -1;
1.4 markus 80: }
1.12 markus 81:
82: static void
83: skey_free_ctx(void *ctx)
1.1 markus 84: {
1.12 markus 85: /* we don't have a special context */
1.1 markus 86: }
1.12 markus 87:
88: KbdintDevice skey_device = {
89: "skey",
90: skey_init_ctx,
91: skey_query,
92: skey_respond,
1.17 provos 93: skey_free_ctx
94: };
95:
96: KbdintDevice mm_skey_device = {
97: "skey",
98: skey_init_ctx,
99: mm_skey_query,
100: mm_skey_respond,
1.12 markus 101: skey_free_ctx
102: };
103: #endif /* SKEY */