2 * Copyright (c) 2001 Markus Friedl. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
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.
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.
26 RCSID("$OpenBSD: auth-chall.c,v 1.5 2001/03/02 18:54:30 deraadt Exp $");
33 get_challenge(Authctxt *authctxt, char *devs)
37 if (authctxt->as != NULL) {
38 debug2("try reuse session");
39 challenge = auth_getitem(authctxt->as, AUTHV_CHALLENGE);
40 if (challenge != NULL) {
41 debug2("reuse bsd auth session");
44 auth_close(authctxt->as);
47 debug2("new bsd auth session");
48 if (devs == NULL || strlen(devs) == 0)
49 devs = authctxt->style;
50 debug3("bsd auth: devs %s", devs ? devs : "<default>");
51 authctxt->as = auth_userchallenge(authctxt->user, devs, "auth-ssh",
53 if (authctxt->as == NULL)
55 debug2("get_challenge: <%s>", challenge ? challenge : "EMPTY");
59 verify_response(Authctxt *authctxt, char *response)
63 if (authctxt->as == 0)
64 error("verify_response: no bsd auth session");
65 authok = auth_userresponse(authctxt->as, response, 0);
67 debug("verify_response: <%s> = <%d>", response, authok);
75 get_challenge(Authctxt *authctxt, char *devs)
77 static char challenge[1024];
79 if (skeychallenge(&skey, authctxt->user, challenge) == -1)
81 strlcat(challenge, "\nS/Key Password: ", sizeof challenge);
85 verify_response(Authctxt *authctxt, char *response)
87 return (authctxt->valid &&
88 skey_haskey(authctxt->pw->pw_name) == 0 &&
89 skey_passcheck(authctxt->pw->pw_name, response) != -1);
94 get_challenge(Authctxt *authctxt, char *devs)
99 verify_response(Authctxt *authctxt, char *response)