GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/ssh/sshd/../auth-bsdauth.c Lines: 0 46 0.0 %
Date: 2017-11-13 Branches: 0 22 0.0 %

Line Branch Exec Source
1
/* $OpenBSD: auth-bsdauth.c,v 1.14 2015/10/20 23:24:25 mmcc Exp $ */
2
/*
3
 * Copyright (c) 2001 Markus Friedl.  All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 * 1. Redistributions of source code must retain the above copyright
9
 *    notice, this list of conditions and the following disclaimer.
10
 * 2. Redistributions in binary form must reproduce the above copyright
11
 *    notice, this list of conditions and the following disclaimer in the
12
 *    documentation and/or other materials provided with the distribution.
13
 *
14
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24
 */
25
26
#include <sys/types.h>
27
#include <stdarg.h>
28
#include <stdio.h>
29
30
#include "xmalloc.h"
31
#include "key.h"
32
#include "hostfile.h"
33
#include "auth.h"
34
#include "log.h"
35
#include "buffer.h"
36
#ifdef GSSAPI
37
#include "ssh-gss.h"
38
#endif
39
#include "monitor_wrap.h"
40
41
static void *
42
bsdauth_init_ctx(Authctxt *authctxt)
43
{
44
	return authctxt;
45
}
46
47
int
48
bsdauth_query(void *ctx, char **name, char **infotxt,
49
   u_int *numprompts, char ***prompts, u_int **echo_on)
50
{
51
	Authctxt *authctxt = ctx;
52
	char *challenge = NULL;
53
54
	*infotxt = NULL;
55
	*numprompts = 0;
56
	*prompts = NULL;
57
	*echo_on = NULL;
58
59
	if (authctxt->as != NULL) {
60
		debug2("bsdauth_query: try reuse session");
61
		challenge = auth_getitem(authctxt->as, AUTHV_CHALLENGE);
62
		if (challenge == NULL) {
63
			auth_close(authctxt->as);
64
			authctxt->as = NULL;
65
		}
66
	}
67
68
	if (challenge == NULL) {
69
		debug2("bsdauth_query: new bsd auth session");
70
		debug3("bsdauth_query: style %s",
71
		    authctxt->style ? authctxt->style : "<default>");
72
		authctxt->as = auth_userchallenge(authctxt->user,
73
		    authctxt->style, "auth-ssh", &challenge);
74
		if (authctxt->as == NULL)
75
			challenge = NULL;
76
		debug2("bsdauth_query: <%s>", challenge ? challenge : "empty");
77
	}
78
79
	if (challenge == NULL)
80
		return -1;
81
82
	*name = xstrdup("");
83
	*infotxt = xstrdup("");
84
	*numprompts = 1;
85
	*prompts = xcalloc(*numprompts, sizeof(char *));
86
	*echo_on = xcalloc(*numprompts, sizeof(u_int));
87
	(*prompts)[0] = xstrdup(challenge);
88
89
	return 0;
90
}
91
92
int
93
bsdauth_respond(void *ctx, u_int numresponses, char **responses)
94
{
95
	Authctxt *authctxt = ctx;
96
	int authok;
97
98
	if (!authctxt->valid)
99
		return -1;
100
101
	if (authctxt->as == NULL)
102
		error("bsdauth_respond: no bsd auth session");
103
104
	if (numresponses != 1)
105
		return -1;
106
107
	authok = auth_userresponse(authctxt->as, responses[0], 0);
108
	authctxt->as = NULL;
109
	debug3("bsdauth_respond: <%s> = <%d>", responses[0], authok);
110
111
	return (authok == 0) ? -1 : 0;
112
}
113
114
static void
115
bsdauth_free_ctx(void *ctx)
116
{
117
	Authctxt *authctxt = ctx;
118
119
	if (authctxt && authctxt->as) {
120
		auth_close(authctxt->as);
121
		authctxt->as = NULL;
122
	}
123
}
124
125
KbdintDevice bsdauth_device = {
126
	"bsdauth",
127
	bsdauth_init_ctx,
128
	bsdauth_query,
129
	bsdauth_respond,
130
	bsdauth_free_ctx
131
};
132
133
KbdintDevice mm_bsdauth_device = {
134
	"bsdauth",
135
	bsdauth_init_ctx,
136
	mm_bsdauth_query,
137
	mm_bsdauth_respond,
138
	bsdauth_free_ctx
139
};