Ben Lindstrom | db65e8f | 2001-01-19 04:26:52 +0000 | [diff] [blame] | 1 | /* |
Ben Lindstrom | 92a2e38 | 2001-03-05 06:59:27 +0000 | [diff] [blame] | 2 | * Copyright (c) 2001 Markus Friedl. All rights reserved. |
Ben Lindstrom | db65e8f | 2001-01-19 04:26:52 +0000 | [diff] [blame] | 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 | |
| 25 | #include "includes.h" |
Ben Lindstrom | eebc4a2 | 2001-03-22 01:22:03 +0000 | [diff] [blame] | 26 | RCSID("$OpenBSD: auth-chall.c,v 1.6 2001/03/20 18:57:04 markus Exp $"); |
Ben Lindstrom | db65e8f | 2001-01-19 04:26:52 +0000 | [diff] [blame] | 27 | |
Ben Lindstrom | db65e8f | 2001-01-19 04:26:52 +0000 | [diff] [blame] | 28 | #include "auth.h" |
Damien Miller | 60396b0 | 2001-02-18 17:01:00 +1100 | [diff] [blame] | 29 | #include "log.h" |
Ben Lindstrom | db65e8f | 2001-01-19 04:26:52 +0000 | [diff] [blame] | 30 | |
Damien Miller | 60396b0 | 2001-02-18 17:01:00 +1100 | [diff] [blame] | 31 | #ifdef BSD_AUTH |
| 32 | char * |
| 33 | get_challenge(Authctxt *authctxt, char *devs) |
| 34 | { |
| 35 | char *challenge; |
| 36 | |
| 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"); |
| 42 | return challenge; |
| 43 | } |
| 44 | auth_close(authctxt->as); |
| 45 | authctxt->as = NULL; |
| 46 | } |
| 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", |
| 52 | &challenge); |
| 53 | if (authctxt->as == NULL) |
| 54 | return NULL; |
| 55 | debug2("get_challenge: <%s>", challenge ? challenge : "EMPTY"); |
| 56 | return challenge; |
| 57 | } |
| 58 | int |
| 59 | verify_response(Authctxt *authctxt, char *response) |
| 60 | { |
| 61 | int authok; |
| 62 | |
| 63 | if (authctxt->as == 0) |
| 64 | error("verify_response: no bsd auth session"); |
| 65 | authok = auth_userresponse(authctxt->as, response, 0); |
| 66 | authctxt->as = NULL; |
| 67 | debug("verify_response: <%s> = <%d>", response, authok); |
| 68 | return authok != 0; |
| 69 | } |
| 70 | #else |
Ben Lindstrom | db65e8f | 2001-01-19 04:26:52 +0000 | [diff] [blame] | 71 | #ifdef SKEY |
Ben Lindstrom | cf0809d | 2001-01-19 15:44:10 +0000 | [diff] [blame] | 72 | #include <skey.h> |
| 73 | |
Ben Lindstrom | db65e8f | 2001-01-19 04:26:52 +0000 | [diff] [blame] | 74 | char * |
| 75 | get_challenge(Authctxt *authctxt, char *devs) |
| 76 | { |
| 77 | static char challenge[1024]; |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 78 | struct skey skey; |
Ben Lindstrom | db65e8f | 2001-01-19 04:26:52 +0000 | [diff] [blame] | 79 | if (skeychallenge(&skey, authctxt->user, challenge) == -1) |
| 80 | return NULL; |
| 81 | strlcat(challenge, "\nS/Key Password: ", sizeof challenge); |
| 82 | return challenge; |
| 83 | } |
| 84 | int |
| 85 | verify_response(Authctxt *authctxt, char *response) |
| 86 | { |
| 87 | return (authctxt->valid && |
| 88 | skey_haskey(authctxt->pw->pw_name) == 0 && |
| 89 | skey_passcheck(authctxt->pw->pw_name, response) != -1); |
| 90 | } |
| 91 | #else |
| 92 | /* not available */ |
| 93 | char * |
| 94 | get_challenge(Authctxt *authctxt, char *devs) |
| 95 | { |
| 96 | return NULL; |
| 97 | } |
| 98 | int |
| 99 | verify_response(Authctxt *authctxt, char *response) |
| 100 | { |
| 101 | return 0; |
| 102 | } |
| 103 | #endif |
Damien Miller | 60396b0 | 2001-02-18 17:01:00 +1100 | [diff] [blame] | 104 | #endif |