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
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
/** BEGIN COPYRIGHT BLOCK
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
*
* License: GPL (version 3 or any later version).
* See LICENSE for details.
* END COPYRIGHT BLOCK **/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <sys/types.h>
#include <string.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <arpa/nameser.h>
#include <resolv.h>
#include <errno.h>
#include "slap.h"
#if defined(USE_SYSCONF) || defined(LINUX) || defined(__FreeBSD__)
#include <unistd.h>
#endif /* USE_SYSCONF */
#include <ssl.h>
#include "fe.h"
#ifndef _PATH_RESCONF /* usually defined in <resolv.h> */
#define _PATH_RESCONF "/etc/resolv.conf"
#endif
#if defined(__hpux)
#if (MAXHOSTNAMELEN < 256)
#undef MAXHOSTNAMELEN
#define MAXHOSTNAMELEN 256
#endif
#endif
static char *
find_localhost_DNS(void)
{
char hostname[MAXHOSTNAMELEN + 1];
FILE *f;
char *cp;
char *domain;
char line[MAXHOSTNAMELEN + 8];
int gai_result;
struct addrinfo hints = {0};
struct addrinfo *info = NULL, *p = NULL;
if (gethostname(hostname, MAXHOSTNAMELEN)) {
int oserr = errno;
slapi_log_err(SLAPI_LOG_ERR, "find_localhost_DNS",
"gethostname() failed, error %d (%s)\n",
oserr, slapd_system_strerror(oserr));
return NULL;
}
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_CANONNAME;
if ((gai_result = getaddrinfo(hostname, NULL, &hints, &info)) != 0) {
slapi_log_err(SLAPI_LOG_ERR, "find_localhost_DNS",
"getaddrinfo: %s\n", gai_strerror(gai_result));
return NULL;
}
if (strchr(info->ai_canonname, '.') != NULL) {
char *return_name = slapi_ch_strdup(info->ai_canonname);
freeaddrinfo(info);
slapi_log_err(SLAPI_LOG_CONFIG, "find_localhost_DNS", "initial ai_canonname == %s\n", return_name);
return return_name;
}
for(p = info; p != NULL; p = p->ai_next) {
if (strchr(p->ai_canonname, '.') != NULL &&
strncmp(p->ai_canonname, info->ai_canonname, strlen(info->ai_canonname)))
{
char *return_name = slapi_ch_strdup(p->ai_canonname);
freeaddrinfo(info);
slapi_log_err(SLAPI_LOG_CONFIG, "find_localhost_DNS", "next ai_canonname == %s\n", return_name);
return return_name;
}
}
/* The following is copied from dns_guess_domain(),
in ldapserver/lib/base/dnsdmain.c */
domain = NULL;
f = fopen(_PATH_RESCONF, "r"); /* This fopen() will fail on NT, as expected */
if (f != NULL) {
while (fgets(line, sizeof(line), f)) {
if (strncasecmp(line, "domain", 6) == 0 && isspace(line[6])) {
slapi_log_err(SLAPI_LOG_CONFIG, "find_localhost_DNS", "%s: %s\n", _PATH_RESCONF, line);
for (cp = &line[7]; *cp && isspace(*cp); ++cp)
;
if (*cp) {
domain = cp;
/* ignore subsequent whitespace: */
for (; *cp && !isspace(*cp); ++cp)
;
if (*cp) {
*cp = '\0';
}
}
break;
}
}
fclose(f);
}
#ifndef NO_DOMAINNAME
if (domain == NULL) {
/* No domain found. Try getdomainname. */
line[0] = '\0';
if (getdomainname(line, sizeof(line)) < 0) { /* failure */
slapi_log_err(SLAPI_LOG_ERR, "find_localhost_DNS", "getdomainname failed\n");
} else {
slapi_log_err(SLAPI_LOG_CONFIG, "find_localhost_DNS", "getdomainname(%s)\n", line);
}
if (line[0] != '\0') {
domain = &line[0];
}
}
#endif
if (domain == NULL) {
freeaddrinfo(info);
return NULL;
}
PL_strncpyz(hostname, info->ai_canonname, sizeof(hostname));
if (domain[0] == '.')
++domain;
if (domain[0]) {
PL_strcatn(hostname, sizeof(hostname), ".");
PL_strcatn(hostname, sizeof(hostname), domain);
}
slapi_log_err(SLAPI_LOG_CONFIG, "find_localhost_DNS", "hostname == %s\n", hostname);
freeaddrinfo(info);
return slapi_ch_strdup(hostname);
}
static const char *const RDN = "dc=";
static char *
convert_DNS_to_DN(char *DNS)
{
char *DN;
char *dot;
size_t components;
if (*DNS == '\0') {
return slapi_ch_strdup("");
}
components = 1;
for (dot = strchr(DNS, '.'); dot != NULL; dot = strchr(dot + 1, '.')) {
++components;
}
DN = slapi_ch_malloc(strlen(DNS) + (components * strlen(RDN)) + 1);
strcpy(DN, RDN);
for (dot = strchr(DNS, '.'); dot != NULL; dot = strchr(dot + 1, '.')) {
*dot = '\0';
strcat(DN, DNS);
strcat(DN, ",");
strcat(DN, RDN);
DNS = dot + 1;
*dot = '.';
}
strcat(DN, DNS);
slapi_dn_normalize(DN);
return DN;
}
static char *localhost_DN = NULL;
char *
get_localhost_DNS()
{
char *retVal;
if ((retVal = config_get_localhost()) == NULL) {
/* find_localhost_DNS() returns strdup result */
retVal = find_localhost_DNS();
}
return retVal;
}
static void
set_localhost_DN(void)
{
char *localhost_DNS = config_get_localhost();
if (localhost_DNS != NULL) {
localhost_DN = convert_DNS_to_DN(localhost_DNS);
slapi_log_err(SLAPI_LOG_CONFIG, "set_localhost_DN",
"DNS %s -> DN %s\n", localhost_DNS, localhost_DN);
}
slapi_ch_free_string(&localhost_DNS);
}
char *
get_localhost_DN()
/* Return the Distinguished Name of the local host; that is,
its DNS name converted to a DN according to RFC 1279.
The caller should _not_ free this pointer. */
{
if (localhost_DN == NULL) {
set_localhost_DN();
}
return localhost_DN;
}
static char *config_DN = NULL;
char *
get_config_DN()
{
char *c;
char *host;
if (config_DN == NULL) {
host = get_localhost_DN();
if (host)
c = slapi_ch_malloc(20 + strlen(host));
else {
slapi_log_err(SLAPI_LOG_CONFIG, "get_config_DN",
"Get_locahost_DN() returned \"\"\n");
c = slapi_ch_malloc(20);
}
sprintf(c, "cn=ldap://%s:%d", host ? host : "", config_get_port());
config_DN = c;
}
return config_DN;
}
|
