Annotation of src/usr.bin/ssh/auth-bsdauth.c, Revision 1.1.6.1
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"
1.1.6.1 ! jason 25: RCSID("$OpenBSD: auth-bsdauth.c,v 1.2 2001/12/19 07:18:56 deraadt Exp $");
1.1 markus 26:
27: #ifdef BSD_AUTH
28: #include "xmalloc.h"
29: #include "auth.h"
30: #include "log.h"
31:
32: static void *
33: bsdauth_init_ctx(Authctxt *authctxt)
34: {
35: return authctxt;
36: }
37:
38: static int
1.1.6.1 ! jason 39: bsdauth_query(void *ctx, char **name, char **infotxt,
1.1 markus 40: u_int *numprompts, char ***prompts, u_int **echo_on)
41: {
1.1.6.1 ! jason 42: Authctxt *authctxt = ctx;
! 43: char *challenge = NULL;
1.1 markus 44:
1.1.6.1 ! jason 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>");
1.1.6.1 ! jason 58: authctxt->as = auth_userchallenge(authctxt->user,
1.1 markus 59: authctxt->style, "auth-ssh", &challenge);
1.1.6.1 ! jason 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:
! 68: *name = xstrdup("");
! 69: *infotxt = xstrdup("");
! 70: *numprompts = 1;
! 71: *prompts = xmalloc(*numprompts * sizeof(char*));
! 72: *echo_on = xmalloc(*numprompts * sizeof(u_int));
! 73: (*echo_on)[0] = 0;
! 74: (*prompts)[0] = xstrdup(challenge);
1.1 markus 75:
1.1.6.1 ! jason 76: return 0;
1.1 markus 77: }
78:
79: static int
80: bsdauth_respond(void *ctx, u_int numresponses, char **responses)
81: {
1.1.6.1 ! jason 82: Authctxt *authctxt = ctx;
! 83: int authok;
1.1 markus 84:
1.1.6.1 ! jason 85: if (authctxt->as == 0)
! 86: error("bsdauth_respond: no bsd auth session");
! 87:
! 88: if (numresponses != 1)
! 89: return -1;
! 90:
! 91: authok = auth_userresponse(authctxt->as, responses[0], 0);
! 92: authctxt->as = NULL;
! 93: debug3("bsdauth_respond: <%s> = <%d>", responses[0], authok);
! 94:
! 95: return (authok == 0) ? -1 : 0;
1.1 markus 96: }
97:
98: static void
99: bsdauth_free_ctx(void *ctx)
100: {
1.1.6.1 ! jason 101: Authctxt *authctxt = ctx;
1.1 markus 102:
1.1.6.1 ! jason 103: if (authctxt && authctxt->as) {
! 104: auth_close(authctxt->as);
! 105: authctxt->as = NULL;
! 106: }
1.1 markus 107: }
108:
109: KbdintDevice bsdauth_device = {
110: "bsdauth",
111: bsdauth_init_ctx,
112: bsdauth_query,
113: bsdauth_respond,
114: bsdauth_free_ctx
115: };
116: #endif