1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 /*
18 * apr_ldap_init.c: LDAP v2/v3 common initialise
19 *
20 * Original code from auth_ldap module for Apache v1.3:
21 * Copyright 1998, 1999 Enbridge Pipelines Inc.
22 * Copyright 1999-2001 Dave Carrigan
23 */
24
25 #include "apr.h"
26 #include "apu.h"
27 #include "apu_config.h"
28
29 #if APU_DSO_BUILD
30 #define APU_DSO_LDAP_BUILD
31 #endif
32
33 #include "apr_ldap.h"
34 #include "apu_internal.h"
35 #include "apr_errno.h"
36 #include "apr_pools.h"
37 #include "apr_strings.h"
38
39 #if APR_HAS_LDAP
40
41 /**
42 * APR LDAP SSL Initialise function
43 *
44 * This function initialises SSL on the underlying LDAP toolkit
45 * if this is necessary.
46 *
47 * If a CA certificate is provided, this is set, however the setting
48 * of certificates via this method has been deprecated and will be removed in
49 * APR v2.0.
50 *
51 * The apr_ldap_set_option() function with the APR_LDAP_OPT_TLS_CERT option
52 * should be used instead to set certificates.
53 *
54 * If SSL support is not available on this platform, or a problem
55 * was encountered while trying to set the certificate, the function
56 * will return APR_EGENERAL. Further LDAP specific error information
57 * can be found in result_err.
58 */
apr_ldap_ssl_init(apr_pool_t * pool,const char * cert_auth_file,int cert_file_type,apr_ldap_err_t ** result_err)59 APU_DECLARE_LDAP(int) apr_ldap_ssl_init(apr_pool_t *pool,
60 const char *cert_auth_file,
61 int cert_file_type,
62 apr_ldap_err_t **result_err)
63 {
64
65 apr_ldap_err_t *result = (apr_ldap_err_t *)apr_pcalloc(pool, sizeof(apr_ldap_err_t));
66 *result_err = result;
67
68 #if APR_HAS_LDAP_SSL /* compiled with ssl support */
69
70 /* Novell */
71 #if APR_HAS_NOVELL_LDAPSDK
72 ldapssl_client_init(NULL, NULL);
73 #endif
74
75 /* if a certificate was specified, set it */
76 if (cert_auth_file) {
77 apr_ldap_opt_tls_cert_t *cert = (apr_ldap_opt_tls_cert_t *)apr_pcalloc(pool, sizeof(apr_ldap_opt_tls_cert_t));
78 cert->type = cert_file_type;
79 cert->path = cert_auth_file;
80 return apr_ldap_set_option(pool, NULL, APR_LDAP_OPT_TLS_CERT, (void *)cert, result_err);
81 }
82
83 #else /* not compiled with SSL Support */
84 if (cert_auth_file) {
85 result->reason = "LDAP: Attempt to set certificate store failed. "
86 "Not built with SSL support";
87 result->rc = -1;
88 }
89 #endif /* APR_HAS_LDAP_SSL */
90
91 if (result->rc != -1) {
92 result->msg = ldap_err2string(result->rc);
93 }
94
95 if (LDAP_SUCCESS != result->rc) {
96 return APR_EGENERAL;
97 }
98
99 return APR_SUCCESS;
100
101 }
102
103
104 /**
105 * APR LDAP SSL De-Initialise function
106 *
107 * This function tears down any SSL certificate setup previously
108 * set using apr_ldap_ssl_init(). It should be called to clean
109 * up if a graceful restart of a service is attempted.
110 *
111 * This function only does anything on Netware.
112 *
113 * @todo currently we do not check whether apr_ldap_ssl_init()
114 * has been called first - should we?
115 */
apr_ldap_ssl_deinit(void)116 APU_DECLARE_LDAP(int) apr_ldap_ssl_deinit(void)
117 {
118
119 #if APR_HAS_LDAP_SSL && APR_HAS_LDAPSSL_CLIENT_DEINIT
120 ldapssl_client_deinit();
121 #endif
122 return APR_SUCCESS;
123
124 }
125
126
127 /**
128 * APR LDAP initialise function
129 *
130 * This function is responsible for initialising an LDAP
131 * connection in a toolkit independant way. It does the
132 * job of ldap_init() from the C api.
133 *
134 * It handles both the SSL and non-SSL case, and attempts
135 * to hide the complexity setup from the user. This function
136 * assumes that any certificate setup necessary has already
137 * been done.
138 *
139 * If SSL or STARTTLS needs to be enabled, and the underlying
140 * toolkit supports it, the following values are accepted for
141 * secure:
142 *
143 * APR_LDAP_NONE: No encryption
144 * APR_LDAP_SSL: SSL encryption (ldaps://)
145 * APR_LDAP_STARTTLS: Force STARTTLS on ldap://
146 */
apr_ldap_init(apr_pool_t * pool,LDAP ** ldap,const char * hostname,int portno,int secure,apr_ldap_err_t ** result_err)147 APU_DECLARE_LDAP(int) apr_ldap_init(apr_pool_t *pool,
148 LDAP **ldap,
149 const char *hostname,
150 int portno,
151 int secure,
152 apr_ldap_err_t **result_err)
153 {
154
155 apr_ldap_err_t *result = (apr_ldap_err_t *)apr_pcalloc(pool, sizeof(apr_ldap_err_t));
156 *result_err = result;
157
158 #if APR_HAS_LDAPSSL_INIT
159 #if APR_HAS_SOLARIS_LDAPSDK
160 /*
161 * Using the secure argument should aways be possible. But as LDAP SDKs
162 * tend to have different quirks and bugs, this needs to be tested for
163 * for each of them, first. For Solaris LDAP it works, and the method
164 * with ldap_set_option doesn't.
165 */
166 *ldap = ldapssl_init(hostname, portno, secure == APR_LDAP_SSL);
167 #else
168 *ldap = ldapssl_init(hostname, portno, 0);
169 #endif
170 #elif APR_HAS_LDAP_SSLINIT
171 *ldap = ldap_sslinit((char *)hostname, portno, 0);
172 #else
173 *ldap = ldap_init((char *)hostname, portno);
174 #endif
175
176 if (*ldap != NULL) {
177 #if APR_HAS_SOLARIS_LDAPSDK
178 if (secure == APR_LDAP_SSL)
179 return APR_SUCCESS;
180 else
181 #endif
182 return apr_ldap_set_option(pool, *ldap, APR_LDAP_OPT_TLS, &secure, result_err);
183 }
184 else {
185 /* handle the error case */
186 apr_ldap_err_t *result = (apr_ldap_err_t *)apr_pcalloc(pool, sizeof(apr_ldap_err_t));
187 *result_err = result;
188
189 result->reason = "APR LDAP: Unable to initialize the LDAP connection";
190 result->rc = -1;
191 return APR_EGENERAL;
192 }
193
194 }
195
196
197 /**
198 * APR LDAP info function
199 *
200 * This function returns a string describing the LDAP toolkit
201 * currently in use. The string is placed inside result_err->reason.
202 */
apr_ldap_info(apr_pool_t * pool,apr_ldap_err_t ** result_err)203 APU_DECLARE_LDAP(int) apr_ldap_info(apr_pool_t *pool,
204 apr_ldap_err_t **result_err)
205 {
206 apr_ldap_err_t *result = (apr_ldap_err_t *)apr_pcalloc(pool, sizeof(apr_ldap_err_t));
207 *result_err = result;
208
209 result->reason = "APR LDAP: Built with "
210 LDAP_VENDOR_NAME
211 " LDAP SDK";
212 return APR_SUCCESS;
213
214 }
215
216 #if APU_DSO_BUILD
217
218 /* For DSO builds, export the table of entry points into the apr_ldap DSO
219 * See include/private/apu_internal.h for the corresponding declarations
220 */
221 APU_MODULE_DECLARE_DATA struct apr__ldap_dso_fntable apr__ldap_fns = {
222 apr_ldap_info,
223 apr_ldap_init,
224 apr_ldap_ssl_init,
225 apr_ldap_ssl_deinit,
226 apr_ldap_get_option,
227 apr_ldap_set_option,
228 apr_ldap_rebind_init,
229 apr_ldap_rebind_add,
230 apr_ldap_rebind_remove
231 };
232
233 #endif /* APU_DSO_BUILD */
234
235 #endif /* APR_HAS_LDAP */
236