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
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/*
Unix SMB/Netbios implementation.
Version 3.0
ads (active directory) utility library
Copyright (C) Andrew Tridgell 2001
Copyright (C) Andrew Bartlett 2001
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
static char *ads_build_dn(const char *realm)
{
char *p, *r;
int numdots = 0;
char *ret;
int len;
r = strdup(realm);
if (!r || !*r) return r;
for (p=r; *p; p++) {
if (*p == '.') numdots++;
}
len = (numdots+1)*4 + strlen(r) + 1;
ret = malloc(len);
strlcpy(ret,"dc=", len);
p=strtok(r,".");
strlcat(ret, p, len);
while ((p=strtok(NULL,"."))) {
strlcat(ret,",dc=", len);
strlcat(ret, p, len);
}
free(r);
return ret;
}
#ifdef HAVE_KRB5
/*
get the default relm from krb5.conf
*/
static char *get_default_realm(ADS_STRUCT *ads)
{
BOOL ret;
krb5_context context;
char *realm;
ret = krb5_init_context(&context);
if (ret) {
DEBUG(1,("krb5_init_context failed (%s)\n", error_message(ret)));
return NULL;
}
ret = krb5_get_default_realm(context, &realm);
if (ret) {
DEBUG(1,("krb5_get_default_realm failed (%s)\n", error_message(ret)));
krb5_free_context(context);
return NULL;
} else {
DEBUG(5,("krb5_get_default_realm got (%s)\n", realm));
}
krb5_free_context(context);
return realm;
}
#else
static char *get_default_realm(ADS_STRUCT *ads)
{
/* We can't do this if we don't have krb5,
but save linking nightmares */
DEBUG(5,("get_default_realm: not compiled with krb5.\n"));
return NULL;
}
#endif
#ifdef HAVE_LDAP
/*
find the ldap server from DNS
*/
static char *find_ldap_server(ADS_STRUCT *ads)
{
char *list = NULL;
if (!ads->realm) return NULL;
if (ldap_domain2hostlist(ads->realm, &list) == LDAP_SUCCESS) {
char *p;
p = strchr(list, ':');
if (p) *p = 0;
return list;
}
return NULL;
}
#else
static char *find_ldap_server(ADS_STRUCT *ads)
{
/* Without LDAP this doesn't make much sense */
return NULL;
}
#endif
#ifndef LDAP_PORT
#define LDAP_PORT 389
#endif
/*
initialise a ADS_STRUCT, ready for some ads_ ops
*/
ADS_STRUCT *ads_init(const char *realm,
const char *ldap_server,
const char *bind_path)
{
ADS_STRUCT *ads;
ads = (ADS_STRUCT *)smb_xmalloc(sizeof(*ads));
memset(ads, 0, sizeof(*ads));
ads->realm = realm? strdup(realm) : NULL;
ads->ldap_server = ldap_server? strdup(ldap_server) : NULL;
ads->bind_path = bind_path? strdup(bind_path) : NULL;
ads->ldap_port = LDAP_PORT;
if (!ads->realm) {
ads->realm = lp_realm();
if (!ads->realm[0]) {
ads->realm = get_default_realm(ads);
}
if (!ads->realm) ads->realm = strdup("");
}
if (!ads->bind_path) {
ads->bind_path = ads_build_dn(ads->realm);
}
if (!ads->ldap_server) {
ads->ldap_server = lp_ads_server();
if (!ads->ldap_server[0]) {
ads->ldap_server = find_ldap_server(ads);
}
}
if (!ads->kdc_server) {
/* assume its the same as LDAP */
ads->kdc_server = ads->ldap_server? strdup(ads->ldap_server) : NULL;
}
return ads;
}
/*
free the memory used by the ADS structure initialized with 'ads_init(...)'
*/
void ads_destroy(ADS_STRUCT **ads)
{
if (False && (ads) && (*ads)) {
if ((*ads)->ld) ldap_unbind((*ads)->ld);
SAFE_FREE((*ads)->realm);
SAFE_FREE((*ads)->ldap_server);
SAFE_FREE((*ads)->kdc_server);
SAFE_FREE((*ads)->bind_path);
ZERO_STRUCTP(*ads);
SAFE_FREE(*ads);
}
}
|
