Annotation of src/usr.bin/ssh/auth-skey.c, Revision 1.9.2.3
1.8 deraadt 1: /*
1.9.2.2 miod 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: */
1.1 markus 24: #include "includes.h"
1.9.2.3 ! brad 25: RCSID("$OpenBSD: auth-skey.c,v 1.16 2002/01/12 13:10:29 markus Exp $");
1.1 markus 26:
1.9.2.2 miod 27: #ifdef SKEY
28:
29: #include <skey.h>
1.4 markus 30:
1.9.2.2 miod 31: #include "xmalloc.h"
32: #include "auth.h"
33:
34: static void *
35: skey_init_ctx(Authctxt *authctxt)
1.4 markus 36: {
1.9.2.2 miod 37: return authctxt;
1.4 markus 38: }
39:
1.9.2.2 miod 40: #define PROMPT "\nS/Key Password: "
1.1 markus 41:
1.9.2.2 miod 42: static int
1.9.2.3 ! brad 43: skey_query(void *ctx, char **name, char **infotxt,
1.9.2.2 miod 44: u_int* numprompts, char ***prompts, u_int **echo_on)
1.1 markus 45: {
1.9.2.2 miod 46: Authctxt *authctxt = ctx;
47: char challenge[1024], *p;
48: int len;
49: struct skey skey;
50:
51: if (skeychallenge(&skey, authctxt->user, challenge) == -1)
52: return -1;
53:
54: *name = xstrdup("");
55: *infotxt = xstrdup("");
56: *numprompts = 1;
57: *prompts = xmalloc(*numprompts * sizeof(char*));
58: *echo_on = xmalloc(*numprompts * sizeof(u_int));
59: (*echo_on)[0] = 0;
60:
61: len = strlen(challenge) + strlen(PROMPT) + 1;
62: p = xmalloc(len);
1.9.2.3 ! brad 63: strlcpy(p, challenge, len);
1.9.2.2 miod 64: strlcat(p, PROMPT, len);
65: (*prompts)[0] = p;
1.6 markus 66:
1.9.2.2 miod 67: return 0;
68: }
1.1 markus 69:
1.9.2.2 miod 70: static int
71: skey_respond(void *ctx, u_int numresponses, char **responses)
72: {
73: Authctxt *authctxt = ctx;
1.9.2.3 ! brad 74:
1.9.2.2 miod 75: if (authctxt->valid &&
1.9.2.3 ! brad 76: numresponses == 1 &&
1.9.2.2 miod 77: skey_haskey(authctxt->pw->pw_name) == 0 &&
78: skey_passcheck(authctxt->pw->pw_name, responses[0]) != -1)
79: return 0;
80: return -1;
1.1 markus 81: }
1.3 markus 82:
1.9.2.2 miod 83: static void
84: skey_free_ctx(void *ctx)
1.1 markus 85: {
1.9.2.2 miod 86: /* we don't have a special context */
1.1 markus 87: }
1.9.2.2 miod 88:
89: KbdintDevice skey_device = {
90: "skey",
91: skey_init_ctx,
92: skey_query,
93: skey_respond,
94: skey_free_ctx
95: };
96: #endif /* SKEY */