1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/* MODULE: auth_sasldb */
/* COPYRIGHT
* Copyright (c) 1997-2000 Messaging Direct Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY MESSAGING DIRECT LTD. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MESSAGING DIRECT LTD. OR
* ITS EMPLOYEES OR AGENTS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
* END COPYRIGHT */
/* SYNOPSIS
* crypt(3) based passwd file validation
* END SYNOPSIS */
/* PUBLIC DEPENDENCIES */
#include "mechanisms.h"
#include <string.h>
#include <stdlib.h>
#include <pwd.h>
#include <config.h>
#include <unistd.h>
/* END PUBLIC DEPENDENCIES */
#include "../lib/saslint.h"
#define RETURN(x) return strdup(x)
#ifdef AUTH_SASLDB
#include "../include/sasl.h"
#include "../include/saslplug.h"
#include "../sasldb/sasldb.h"
static int
vf(void)
{
/* always say ok */
return SASL_OK;
}
static int lame_getcallback(sasl_conn_t *conn __attribute__((unused)),
unsigned long callbackid,
int (**pproc)(),
void **pcontext)
{
if(callbackid == SASL_CB_VERIFYFILE) {
*pproc = vf;
*pcontext = NULL;
return SASL_OK;
}
return SASL_FAIL;
}
static void lame_log(sasl_conn_t *conn __attribute__((unused)),
int level __attribute__((unused)),
const char *fmt __attribute__((unused)),
...)
{
return;
}
static void lame_seterror(sasl_conn_t *conn __attribute__((unused)),
unsigned flags __attribute__((unused)),
const char *fmt __attribute__((unused)),
...)
{
return;
}
/* FUNCTION: init_lame_utils */
/* This sets up a very minimal sasl_utils_t for use only with the
* database functions */
static void init_lame_utils(sasl_utils_t *utils)
{
memset(utils, 0, sizeof(sasl_utils_t));
utils->malloc=(sasl_malloc_t *)malloc;
utils->calloc=(sasl_calloc_t *)calloc;
utils->realloc=(sasl_realloc_t *)realloc;
utils->free=(sasl_free_t *)free;
utils->getcallback=lame_getcallback;
utils->log=lame_log;
utils->seterror=lame_seterror;
return;
}
/* END FUNCTION: init_lame_utils */
#endif /* AUTH_SASLDB */
/* FUNCTION: auth_sasldb */
char * /* R: allocated response string */
auth_sasldb (
/* PARAMETERS */
#ifdef AUTH_SASLDB
const char *login, /* I: plaintext authenticator */
const char *password, /* I: plaintext password */
const char *service __attribute__((unused)),
const char *realm
#else
const char *login __attribute__((unused)),/* I: plaintext authenticator */
const char *password __attribute__((unused)), /* I: plaintext password */
const char *service __attribute__((unused)),
const char *realm __attribute__((unused))
#endif
/* END PARAMETERS */
)
{
#ifdef AUTH_SASLDB
/* VARIABLES */
char pw[1024]; /* pointer to passwd file entry */
sasl_utils_t utils;
int ret;
size_t outsize;
const char *use_realm;
char realm_buf[MAXFQDNLEN];
/* END VARIABLES */
init_lame_utils(&utils);
_sasl_check_db(&utils, (void *)0x1);
if(!realm || !strlen(realm)) {
ret = gethostname(realm_buf,MAXFQDNLEN);
if(ret) RETURN("NO");
use_realm = realm_buf;
} else {
use_realm = realm;
}
ret = _sasldb_getdata(&utils, (void *)0x1, login, use_realm,
"userPassword", pw, 1024, &outsize);
if (ret != SASL_OK) {
RETURN("NO");
}
if (strcmp(pw, password)) {
RETURN("NO");
}
RETURN("OK");
#else
RETURN("NO");
#endif
}
/* END FUNCTION: auth_sasldb */
/* END MODULE: auth_sasldb */
|
