1 /* Copyright 2000-2005 The Apache Software Foundation or its licensors, as
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #include "ap_provider.h"
19 #include "http_config.h"
23 #include "apr_strings.h"
27 module AP_MODULE_DECLARE_DATA authn_dbd_module;
38 /* optional function - look it up once in post_config */
39 static ap_dbd_t *(*authn_dbd_acquire_fn)(request_rec*) = NULL;
40 static void (*authn_dbd_prepare_fn)(server_rec*, const char*, const char*) = NULL;
42 static void *authn_dbd_cr_conf(apr_pool_t *pool, char *dummy)
44 authn_dbd_conf *ret = apr_pcalloc(pool, sizeof(authn_dbd_conf));
47 static void *authn_dbd_merge_conf(apr_pool_t *pool, void *BASE, void *ADD)
49 authn_dbd_conf *add = ADD;
50 authn_dbd_conf *base = BASE;
51 authn_dbd_conf *ret = apr_palloc(pool, sizeof(authn_dbd_conf));
52 ret->user = (add->user == NULL) ? base->user : add->user;
53 ret->realm = (add->realm == NULL) ? base->realm : add->realm;
56 static const char *authn_dbd_prepare(cmd_parms *cmd, void *cfg, const char *query)
58 static unsigned int label_num = 0;
61 if (authn_dbd_prepare_fn == NULL) {
62 authn_dbd_prepare_fn = APR_RETRIEVE_OPTIONAL_FN(ap_dbd_prepare);
63 if (authn_dbd_prepare_fn == NULL) {
64 return "You must load mod_dbd to enable AuthDBD functions";
66 authn_dbd_acquire_fn = APR_RETRIEVE_OPTIONAL_FN(ap_dbd_acquire);
68 label = apr_psprintf(cmd->pool, "authn_dbd_%d", ++label_num);
70 authn_dbd_prepare_fn(cmd->server, query, label);
72 /* save the label here for our own use */
73 return ap_set_string_slot(cmd, cfg, label);
75 static const command_rec authn_dbd_cmds[] =
77 AP_INIT_TAKE1("AuthDBDUserPWQuery", authn_dbd_prepare,
78 (void *)APR_OFFSETOF(authn_dbd_conf, user), ACCESS_CONF,
79 "Query used to fetch password for user"),
80 AP_INIT_TAKE1("AuthDBDUserRealmQuery", authn_dbd_prepare,
81 (void *)APR_OFFSETOF(authn_dbd_conf, realm), ACCESS_CONF,
82 "Query used to fetch password for user+realm"),
85 static authn_status authn_dbd_password(request_rec *r, const char *user,
89 const char *dbd_password = NULL;
90 apr_dbd_prepared_t *statement;
91 apr_dbd_results_t *res = NULL;
92 apr_dbd_row_t *row = NULL;
94 authn_dbd_conf *conf = ap_get_module_config(r->per_dir_config,
96 ap_dbd_t *dbd = authn_dbd_acquire_fn(r);
98 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
99 "Error looking up %s in database", user);
100 return AUTH_GENERAL_ERROR;
103 if (conf->user == NULL) {
104 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "No DBD Authn configured!");
105 return AUTH_GENERAL_ERROR;
108 statement = apr_hash_get(dbd->prepared, conf->user, APR_HASH_KEY_STRING);
109 if (statement == NULL) {
110 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "No DBD Authn configured!");
111 return AUTH_GENERAL_ERROR;
113 if (apr_dbd_pvselect(dbd->driver, r->pool, dbd->handle, &res, statement,
114 0, user, NULL) != 0) {
115 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
116 "Error looking up %s in database", user);
117 return AUTH_GENERAL_ERROR;
119 for (rv = apr_dbd_get_row(dbd->driver, r->pool, res, &row, -1);
121 rv = apr_dbd_get_row(dbd->driver, r->pool, res, &row, -1)) {
123 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
124 "Error looking up %s in database", user);
125 return AUTH_GENERAL_ERROR;
127 if (dbd_password == NULL) {
128 dbd_password = apr_dbd_get_entry(dbd->driver, row, 0);
130 /* we can't break out here or row won't get cleaned up */
134 return AUTH_USER_NOT_FOUND;
137 rv = apr_password_validate(password, dbd_password);
139 if (rv != APR_SUCCESS) {
145 static authn_status authn_dbd_realm(request_rec *r, const char *user,
146 const char *realm, char **rethash)
149 const char *dbd_hash = NULL;
150 apr_dbd_prepared_t *statement;
151 apr_dbd_results_t *res = NULL;
152 apr_dbd_row_t *row = NULL;
154 authn_dbd_conf *conf = ap_get_module_config(r->per_dir_config,
156 ap_dbd_t *dbd = authn_dbd_acquire_fn(r);
158 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
159 "Error looking up %s in database", user);
160 return AUTH_GENERAL_ERROR;
162 if (conf->realm == NULL) {
163 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "No DBD Authn configured!");
164 return AUTH_GENERAL_ERROR;
166 statement = apr_hash_get(dbd->prepared, conf->realm, APR_HASH_KEY_STRING);
167 if (statement == NULL) {
168 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "No DBD Authn configured!");
169 return AUTH_GENERAL_ERROR;
171 if (apr_dbd_pvselect(dbd->driver, r->pool, dbd->handle, &res, statement,
172 0, user, realm, NULL) != 0) {
173 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
174 "Error looking up %s:%s in database", user, realm);
175 return AUTH_GENERAL_ERROR;
177 for (rv = apr_dbd_get_row(dbd->driver, r->pool, res, &row, -1);
179 rv = apr_dbd_get_row(dbd->driver, r->pool, res, &row, -1)) {
181 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
182 "Error looking up %s in database", user);
183 return AUTH_GENERAL_ERROR;
185 if (dbd_hash == NULL) {
186 dbd_hash = apr_dbd_get_entry(dbd->driver, row, 0);
188 /* we can't break out here or row won't get cleaned up */
192 return AUTH_USER_NOT_FOUND;
195 *rethash = apr_pstrdup(r->pool, dbd_hash);
196 return AUTH_USER_FOUND;
198 static void authn_dbd_hooks(apr_pool_t *p)
200 static const authn_provider authn_dbd_provider = {
205 ap_register_provider(p, AUTHN_PROVIDER_GROUP, "dbd", "0", &authn_dbd_provider);
207 module AP_MODULE_DECLARE_DATA authn_dbd_module =
209 STANDARD20_MODULE_STUFF,
211 authn_dbd_merge_conf,