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7f9875bb OS |
1 | /* ============================================================ |
2 | * Copyright (c) 2003-2004, Ondrej Sury | |
3 | * All rights reserved. | |
4 | * | |
5 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
6 | * you may not use this file except in compliance with the License. | |
7 | * You may obtain a copy of the License at | |
8 | * | |
9 | * http://www.apache.org/licenses/LICENSE-2.0 | |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
16 | * | |
17 | */ | |
18 | ||
19 | /* | |
20 | * mod_vhost_ldap.c --- read virtual host config from LDAP directory | |
21 | */ | |
22 | ||
9ee2dda1 | 23 | #define CORE_PRIVATE |
9ee2dda1 | 24 | |
7f9875bb OS |
25 | #include <unistd.h> |
26 | ||
27 | #include "httpd.h" | |
28 | #include "http_config.h" | |
29 | #include "http_core.h" | |
30 | #include "http_log.h" | |
31 | #include "http_request.h" | |
8503d00b | 32 | #include "apr_version.h" |
7f9875bb | 33 | #include "apr_ldap.h" |
7f9875bb | 34 | #include "apr_reslist.h" |
7f5e70ed | 35 | #include "apr_strings.h" |
7f5e70ed | 36 | #include "apr_tables.h" |
7f9875bb | 37 | #include "util_ldap.h" |
7f5e70ed | 38 | #include "util_script.h" |
7f9875bb | 39 | |
3b8a47e0 | 40 | #if !defined(APU_HAS_LDAP) && !defined(APR_HAS_LDAP) |
7f9875bb OS |
41 | #error mod_vhost_ldap requires APR-util to have LDAP support built in |
42 | #endif | |
43 | ||
44 | #if !defined(WIN32) && !defined(OS2) && !defined(BEOS) && !defined(NETWARE) | |
45 | #define HAVE_UNIX_SUEXEC | |
46 | #endif | |
47 | ||
48 | #ifdef HAVE_UNIX_SUEXEC | |
49 | #include "unixd.h" /* Contains the suexec_identity hook used on Unix */ | |
50 | #endif | |
51 | ||
d129bb81 OS |
52 | #define MIN_UID 100 |
53 | #define MIN_GID 100 | |
7f9875bb | 54 | |
5e2a6ff5 OS |
55 | #define MAX_FAILURES 5 |
56 | ||
7f9875bb OS |
57 | module AP_MODULE_DECLARE_DATA vhost_ldap_module; |
58 | ||
8196fae3 OS |
59 | typedef enum { |
60 | MVL_UNSET, MVL_DISABLED, MVL_ENABLED | |
61 | } mod_vhost_ldap_status_e; | |
62 | ||
7f9875bb | 63 | typedef struct mod_vhost_ldap_config_t { |
8196fae3 | 64 | mod_vhost_ldap_status_e enabled; /* Is vhost_ldap enabled? */ |
7f9875bb OS |
65 | |
66 | /* These parameters are all derived from the VhostLDAPURL directive */ | |
67 | char *url; /* String representation of LDAP URL */ | |
68 | ||
69 | char *host; /* Name of the LDAP server (or space separated list) */ | |
70 | int port; /* Port of the LDAP server */ | |
71 | char *basedn; /* Base DN to do all searches from */ | |
72 | int scope; /* Scope of the search */ | |
73 | char *filter; /* Filter to further limit the search */ | |
74 | deref_options deref; /* how to handle alias dereferening */ | |
75 | ||
76 | char *binddn; /* DN to bind to server (can be NULL) */ | |
77 | char *bindpw; /* Password to bind to server (can be NULL) */ | |
78 | ||
8196fae3 | 79 | int have_deref; /* Set if we have found an Deref option */ |
7f9875bb OS |
80 | int have_ldap_url; /* Set if we have found an LDAP url */ |
81 | ||
82 | int secure; /* True if SSL connections are requested */ | |
6056cddb OS |
83 | |
84 | char *fallback; /* Fallback virtual host */ | |
85 | ||
7f9875bb OS |
86 | } mod_vhost_ldap_config_t; |
87 | ||
88 | typedef struct mod_vhost_ldap_request_t { | |
89 | char *dn; /* The saved dn from a successful search */ | |
90 | char *name; /* ServerName */ | |
91 | char *admin; /* ServerAdmin */ | |
92 | char *docroot; /* DocumentRoot */ | |
9ee2dda1 | 93 | char *cgiroot; /* ScriptAlias */ |
7f9875bb OS |
94 | char *uid; /* Suexec Uid */ |
95 | char *gid; /* Suexec Gid */ | |
96 | } mod_vhost_ldap_request_t; | |
97 | ||
98 | char *attributes[] = | |
6f705808 | 99 | { "apacheServerName", "apacheDocumentRoot", "apacheScriptAlias", "apacheSuexecUid", "apacheSuexecGid", "apacheServerAdmin", 0 }; |
7f9875bb | 100 | |
8503d00b | 101 | #if (APR_MAJOR_VERSION >= 1) |
3b8a47e0 OS |
102 | static APR_OPTIONAL_FN_TYPE(uldap_connection_close) *util_ldap_connection_close; |
103 | static APR_OPTIONAL_FN_TYPE(uldap_connection_find) *util_ldap_connection_find; | |
104 | static APR_OPTIONAL_FN_TYPE(uldap_cache_comparedn) *util_ldap_cache_comparedn; | |
105 | static APR_OPTIONAL_FN_TYPE(uldap_cache_compare) *util_ldap_cache_compare; | |
106 | static APR_OPTIONAL_FN_TYPE(uldap_cache_checkuserid) *util_ldap_cache_checkuserid; | |
107 | static APR_OPTIONAL_FN_TYPE(uldap_cache_getuserdn) *util_ldap_cache_getuserdn; | |
108 | static APR_OPTIONAL_FN_TYPE(uldap_ssl_supported) *util_ldap_ssl_supported; | |
109 | ||
110 | static void ImportULDAPOptFn(void) | |
111 | { | |
112 | util_ldap_connection_close = APR_RETRIEVE_OPTIONAL_FN(uldap_connection_close); | |
113 | util_ldap_connection_find = APR_RETRIEVE_OPTIONAL_FN(uldap_connection_find); | |
114 | util_ldap_cache_comparedn = APR_RETRIEVE_OPTIONAL_FN(uldap_cache_comparedn); | |
115 | util_ldap_cache_compare = APR_RETRIEVE_OPTIONAL_FN(uldap_cache_compare); | |
116 | util_ldap_cache_checkuserid = APR_RETRIEVE_OPTIONAL_FN(uldap_cache_checkuserid); | |
117 | util_ldap_cache_getuserdn = APR_RETRIEVE_OPTIONAL_FN(uldap_cache_getuserdn); | |
118 | util_ldap_ssl_supported = APR_RETRIEVE_OPTIONAL_FN(uldap_ssl_supported); | |
119 | } | |
120 | #endif | |
121 | ||
e1f20c19 | 122 | /* Taken from server/core.c */ |
100c0189 | 123 | static int set_document_root(request_rec *r, const char *arg) |
e1f20c19 OS |
124 | { |
125 | void *sconf = r->server->module_config; | |
126 | core_server_config *conf = ap_get_module_config(sconf, &core_module); | |
127 | ||
128 | /* Make it absolute, relative to ServerRoot */ | |
e1f20c19 | 129 | arg = ap_server_root_relative(r->pool, arg); |
f1c67602 | 130 | |
e1f20c19 | 131 | if (arg == NULL) { |
f1c67602 | 132 | ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, |
e1f20c19 OS |
133 | "[mod_vhost_ldap.c] set_document_root: DocumentRoot [%s] must be a directory", |
134 | arg); | |
135 | ||
136 | return HTTP_INTERNAL_SERVER_ERROR; | |
137 | } | |
138 | ||
139 | /* TODO: ap_configtestonly && ap_docrootcheck && */ | |
140 | if (apr_filepath_merge((char**)&conf->ap_document_root, NULL, arg, | |
141 | APR_FILEPATH_TRUENAME, r->pool) != APR_SUCCESS | |
142 | || !ap_is_directory(r->pool, arg)) { | |
143 | ||
f1c67602 | 144 | ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, |
e1f20c19 OS |
145 | r, |
146 | "[mod_vhost_ldap.c] set_document_root: Warning: DocumentRoot [%s] does not exist", | |
147 | arg); | |
148 | conf->ap_document_root = arg; | |
149 | } | |
100c0189 | 150 | return OK; |
e1f20c19 OS |
151 | } |
152 | ||
153 | ||
7f9875bb OS |
154 | static int mod_vhost_ldap_post_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s) |
155 | { | |
156 | /* make sure that mod_ldap (util_ldap) is loaded */ | |
157 | if (ap_find_linked_module("util_ldap.c") == NULL) { | |
158 | ap_log_error(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, s, | |
159 | "Module mod_ldap missing. Mod_ldap (aka. util_ldap) " | |
160 | "must be loaded in order for mod_vhost_ldap to function properly"); | |
161 | return HTTP_INTERNAL_SERVER_ERROR; | |
162 | ||
163 | } | |
164 | ||
9ee2dda1 | 165 | ap_add_version_component(p, MOD_VHOST_LDAP_VERSION); |
7f9875bb OS |
166 | |
167 | return OK; | |
168 | } | |
169 | ||
170 | static void * | |
171 | mod_vhost_ldap_create_server_config (apr_pool_t *p, server_rec *s) | |
172 | { | |
8196fae3 | 173 | mod_vhost_ldap_config_t *conf = |
7f9875bb OS |
174 | (mod_vhost_ldap_config_t *)apr_pcalloc(p, sizeof (mod_vhost_ldap_config_t)); |
175 | ||
8196fae3 OS |
176 | conf->enabled = MVL_UNSET; |
177 | conf->have_ldap_url = 0; | |
178 | conf->have_deref = 0; | |
179 | conf->binddn = NULL; | |
180 | conf->bindpw = NULL; | |
181 | conf->deref = always; | |
6056cddb | 182 | conf->fallback = NULL; |
8196fae3 OS |
183 | |
184 | return conf; | |
185 | } | |
186 | ||
187 | static void * | |
188 | mod_vhost_ldap_merge_server_config(apr_pool_t *p, void *parentv, void *childv) | |
189 | { | |
190 | mod_vhost_ldap_config_t *parent = (mod_vhost_ldap_config_t *) parentv; | |
191 | mod_vhost_ldap_config_t *child = (mod_vhost_ldap_config_t *) childv; | |
192 | mod_vhost_ldap_config_t *conf = | |
193 | (mod_vhost_ldap_config_t *)apr_pcalloc(p, sizeof(mod_vhost_ldap_config_t)); | |
7f9875bb | 194 | |
8196fae3 OS |
195 | if (child->enabled == MVL_UNSET) { |
196 | conf->enabled = parent->enabled; | |
197 | } else { | |
198 | conf->enabled = child->enabled; | |
199 | } | |
7f9875bb | 200 | |
8196fae3 OS |
201 | if (child->have_ldap_url) { |
202 | conf->have_ldap_url = child->have_ldap_url; | |
203 | conf->url = child->url; | |
204 | conf->host = child->host; | |
205 | conf->port = child->port; | |
206 | conf->basedn = child->basedn; | |
207 | conf->scope = child->scope; | |
208 | conf->filter = child->filter; | |
209 | conf->secure = child->secure; | |
210 | } else { | |
211 | conf->have_ldap_url = parent->have_ldap_url; | |
212 | conf->url = parent->url; | |
213 | conf->host = parent->host; | |
214 | conf->port = parent->port; | |
215 | conf->basedn = parent->basedn; | |
216 | conf->scope = parent->scope; | |
217 | conf->filter = parent->filter; | |
218 | conf->secure = parent->secure; | |
219 | } | |
220 | if (child->have_deref) { | |
221 | conf->have_deref = child->have_deref; | |
222 | conf->deref = child->deref; | |
223 | } else { | |
224 | conf->have_deref = parent->have_deref; | |
225 | conf->deref = parent->deref; | |
226 | } | |
227 | ||
228 | conf->binddn = (child->binddn ? child->binddn : parent->binddn); | |
229 | conf->bindpw = (child->bindpw ? child->bindpw : parent->bindpw); | |
230 | ||
6056cddb OS |
231 | conf->fallback = (child->fallback ? child->fallback : parent->fallback); |
232 | ||
8196fae3 | 233 | return conf; |
7f9875bb OS |
234 | } |
235 | ||
236 | /* | |
237 | * Use the ldap url parsing routines to break up the ldap url into | |
238 | * host and port. | |
239 | */ | |
240 | static const char *mod_vhost_ldap_parse_url(cmd_parms *cmd, | |
241 | void *dummy, | |
242 | const char *url) | |
243 | { | |
244 | int result; | |
245 | apr_ldap_url_desc_t *urld; | |
8503d00b | 246 | #if (APR_MAJOR_VERSION >= 1) |
3b8a47e0 | 247 | apr_ldap_err_t *result_err; |
8503d00b | 248 | #endif |
7f9875bb | 249 | |
8196fae3 | 250 | mod_vhost_ldap_config_t *conf = |
7f9875bb OS |
251 | (mod_vhost_ldap_config_t *)ap_get_module_config(cmd->server->module_config, |
252 | &vhost_ldap_module); | |
253 | ||
254 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
255 | cmd->server, "[mod_vhost_ldap.c] url parse: `%s'", | |
256 | url); | |
8503d00b OS |
257 | |
258 | #if (APR_MAJOR_VERSION >= 1) /* for apache >= 2.2 */ | |
3b8a47e0 OS |
259 | result = apr_ldap_url_parse(cmd->pool, url, &(urld), &(result_err)); |
260 | if (result != LDAP_SUCCESS) { | |
261 | return result_err->reason; | |
262 | } | |
263 | #else | |
7f9875bb OS |
264 | result = apr_ldap_url_parse(url, &(urld)); |
265 | if (result != LDAP_SUCCESS) { | |
266 | switch (result) { | |
3b8a47e0 OS |
267 | case LDAP_URL_ERR_NOTLDAP: |
268 | return "LDAP URL does not begin with ldap://"; | |
269 | case LDAP_URL_ERR_NODN: | |
270 | return "LDAP URL does not have a DN"; | |
271 | case LDAP_URL_ERR_BADSCOPE: | |
272 | return "LDAP URL has an invalid scope"; | |
273 | case LDAP_URL_ERR_MEM: | |
274 | return "Out of memory parsing LDAP URL"; | |
275 | default: | |
276 | return "Could not parse LDAP URL"; | |
7f9875bb OS |
277 | } |
278 | } | |
3b8a47e0 | 279 | #endif |
8196fae3 | 280 | conf->url = apr_pstrdup(cmd->pool, url); |
7f9875bb OS |
281 | |
282 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
283 | cmd->server, "[mod_vhost_ldap.c] url parse: Host: %s", urld->lud_host); | |
284 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
285 | cmd->server, "[mod_vhost_ldap.c] url parse: Port: %d", urld->lud_port); | |
286 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
287 | cmd->server, "[mod_vhost_ldap.c] url parse: DN: %s", urld->lud_dn); | |
288 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
289 | cmd->server, "[mod_vhost_ldap.c] url parse: attrib: %s", urld->lud_attrs? urld->lud_attrs[0] : "(null)"); | |
290 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
291 | cmd->server, "[mod_vhost_ldap.c] url parse: scope: %s", | |
292 | (urld->lud_scope == LDAP_SCOPE_SUBTREE? "subtree" : | |
293 | urld->lud_scope == LDAP_SCOPE_BASE? "base" : | |
294 | urld->lud_scope == LDAP_SCOPE_ONELEVEL? "onelevel" : "unknown")); | |
295 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
296 | cmd->server, "[mod_vhost_ldap.c] url parse: filter: %s", urld->lud_filter); | |
297 | ||
298 | /* Set all the values, or at least some sane defaults */ | |
8196fae3 OS |
299 | if (conf->host) { |
300 | char *p = apr_palloc(cmd->pool, strlen(conf->host) + strlen(urld->lud_host) + 2); | |
7f9875bb OS |
301 | strcpy(p, urld->lud_host); |
302 | strcat(p, " "); | |
8196fae3 OS |
303 | strcat(p, conf->host); |
304 | conf->host = p; | |
7f9875bb OS |
305 | } |
306 | else { | |
8196fae3 | 307 | conf->host = urld->lud_host? apr_pstrdup(cmd->pool, urld->lud_host) : "localhost"; |
7f9875bb | 308 | } |
8196fae3 | 309 | conf->basedn = urld->lud_dn? apr_pstrdup(cmd->pool, urld->lud_dn) : ""; |
7f9875bb | 310 | |
8196fae3 | 311 | conf->scope = urld->lud_scope == LDAP_SCOPE_ONELEVEL ? |
7f9875bb OS |
312 | LDAP_SCOPE_ONELEVEL : LDAP_SCOPE_SUBTREE; |
313 | ||
314 | if (urld->lud_filter) { | |
315 | if (urld->lud_filter[0] == '(') { | |
316 | /* | |
317 | * Get rid of the surrounding parens; later on when generating the | |
318 | * filter, they'll be put back. | |
319 | */ | |
8196fae3 OS |
320 | conf->filter = apr_pstrdup(cmd->pool, urld->lud_filter+1); |
321 | conf->filter[strlen(conf->filter)-1] = '\0'; | |
7f9875bb OS |
322 | } |
323 | else { | |
8196fae3 | 324 | conf->filter = apr_pstrdup(cmd->pool, urld->lud_filter); |
7f9875bb OS |
325 | } |
326 | } | |
327 | else { | |
8196fae3 | 328 | conf->filter = "objectClass=apacheConfig"; |
7f9875bb OS |
329 | } |
330 | ||
331 | /* "ldaps" indicates secure ldap connections desired | |
332 | */ | |
333 | if (strncasecmp(url, "ldaps", 5) == 0) | |
334 | { | |
8196fae3 OS |
335 | conf->secure = 1; |
336 | conf->port = urld->lud_port? urld->lud_port : LDAPS_PORT; | |
7f9875bb OS |
337 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, cmd->server, |
338 | "LDAP: vhost_ldap using SSL connections"); | |
339 | } | |
340 | else | |
341 | { | |
8196fae3 OS |
342 | conf->secure = 0; |
343 | conf->port = urld->lud_port? urld->lud_port : LDAP_PORT; | |
fb323462 | 344 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, cmd->server, |
7f9875bb OS |
345 | "LDAP: vhost_ldap not using SSL connections"); |
346 | } | |
347 | ||
8196fae3 | 348 | conf->have_ldap_url = 1; |
8503d00b | 349 | #if (APR_MAJOR_VERSION < 1) /* free only required for older apr */ |
7f9875bb | 350 | apr_ldap_free_urldesc(urld); |
3b8a47e0 | 351 | #endif |
7f9875bb OS |
352 | return NULL; |
353 | } | |
354 | ||
355 | static const char *mod_vhost_ldap_set_enabled(cmd_parms *cmd, void *dummy, int enabled) | |
356 | { | |
8196fae3 | 357 | mod_vhost_ldap_config_t *conf = |
7f9875bb | 358 | (mod_vhost_ldap_config_t *)ap_get_module_config(cmd->server->module_config, |
6056cddb | 359 | &vhost_ldap_module); |
7f9875bb | 360 | |
8196fae3 OS |
361 | conf->enabled = (enabled) ? MVL_ENABLED : MVL_DISABLED; |
362 | ||
7f9875bb OS |
363 | return NULL; |
364 | } | |
365 | ||
366 | static const char *mod_vhost_ldap_set_binddn(cmd_parms *cmd, void *dummy, const char *binddn) | |
367 | { | |
8196fae3 | 368 | mod_vhost_ldap_config_t *conf = |
7f9875bb | 369 | (mod_vhost_ldap_config_t *)ap_get_module_config(cmd->server->module_config, |
6056cddb | 370 | &vhost_ldap_module); |
7f9875bb | 371 | |
8196fae3 | 372 | conf->binddn = apr_pstrdup(cmd->pool, binddn); |
7f9875bb OS |
373 | return NULL; |
374 | } | |
375 | ||
376 | static const char *mod_vhost_ldap_set_bindpw(cmd_parms *cmd, void *dummy, const char *bindpw) | |
377 | { | |
8196fae3 | 378 | mod_vhost_ldap_config_t *conf = |
7f9875bb | 379 | (mod_vhost_ldap_config_t *)ap_get_module_config(cmd->server->module_config, |
6056cddb | 380 | &vhost_ldap_module); |
7f9875bb | 381 | |
8196fae3 | 382 | conf->bindpw = apr_pstrdup(cmd->pool, bindpw); |
7f9875bb OS |
383 | return NULL; |
384 | } | |
385 | ||
386 | static const char *mod_vhost_ldap_set_deref(cmd_parms *cmd, void *dummy, const char *deref) | |
387 | { | |
8196fae3 | 388 | mod_vhost_ldap_config_t *conf = |
7f9875bb OS |
389 | (mod_vhost_ldap_config_t *)ap_get_module_config (cmd->server->module_config, |
390 | &vhost_ldap_module); | |
391 | ||
392 | if (strcmp(deref, "never") == 0 || strcasecmp(deref, "off") == 0) { | |
8196fae3 OS |
393 | conf->deref = never; |
394 | conf->have_deref = 1; | |
7f9875bb OS |
395 | } |
396 | else if (strcmp(deref, "searching") == 0) { | |
8196fae3 OS |
397 | conf->deref = searching; |
398 | conf->have_deref = 1; | |
7f9875bb OS |
399 | } |
400 | else if (strcmp(deref, "finding") == 0) { | |
8196fae3 OS |
401 | conf->deref = finding; |
402 | conf->have_deref = 1; | |
7f9875bb OS |
403 | } |
404 | else if (strcmp(deref, "always") == 0 || strcasecmp(deref, "on") == 0) { | |
8196fae3 OS |
405 | conf->deref = always; |
406 | conf->have_deref = 1; | |
7f9875bb OS |
407 | } |
408 | else { | |
409 | return "Unrecognized value for VhostLDAPAliasDereference directive"; | |
410 | } | |
411 | return NULL; | |
412 | } | |
413 | ||
6056cddb OS |
414 | static const char *mod_vhost_ldap_set_fallback(cmd_parms *cmd, void *dummy, const char *fallback) |
415 | { | |
416 | mod_vhost_ldap_config_t *conf = | |
417 | (mod_vhost_ldap_config_t *)ap_get_module_config(cmd->server->module_config, | |
418 | &vhost_ldap_module); | |
419 | ||
420 | conf->fallback = apr_pstrdup(cmd->pool, fallback); | |
421 | return NULL; | |
422 | } | |
423 | ||
7f9875bb OS |
424 | command_rec mod_vhost_ldap_cmds[] = { |
425 | AP_INIT_TAKE1("VhostLDAPURL", mod_vhost_ldap_parse_url, NULL, RSRC_CONF, | |
a940f969 | 426 | "URL to define LDAP connection. This should be an RFC 2255 compliant\n" |
7f9875bb OS |
427 | "URL of the form ldap://host[:port]/basedn[?attrib[?scope[?filter]]].\n" |
428 | "<ul>\n" | |
429 | "<li>Host is the name of the LDAP server. Use a space separated list of hosts \n" | |
430 | "to specify redundant servers.\n" | |
431 | "<li>Port is optional, and specifies the port to connect to.\n" | |
432 | "<li>basedn specifies the base DN to start searches from\n" | |
433 | "</ul>\n"), | |
434 | ||
435 | AP_INIT_TAKE1 ("VhostLDAPBindDN", mod_vhost_ldap_set_binddn, NULL, RSRC_CONF, | |
436 | "DN to use to bind to LDAP server. If not provided, will do an anonymous bind."), | |
437 | ||
438 | AP_INIT_TAKE1("VhostLDAPBindPassword", mod_vhost_ldap_set_bindpw, NULL, RSRC_CONF, | |
439 | "Password to use to bind to LDAP server. If not provided, will do an anonymous bind."), | |
440 | ||
441 | AP_INIT_FLAG("VhostLDAPEnabled", mod_vhost_ldap_set_enabled, NULL, RSRC_CONF, | |
442 | "Set to off to disable vhost_ldap, even if it's been enabled in a higher tree"), | |
443 | ||
444 | AP_INIT_TAKE1("VhostLDAPDereferenceAliases", mod_vhost_ldap_set_deref, NULL, RSRC_CONF, | |
a940f969 | 445 | "Determines how aliases are handled during a search. Can be one of the" |
7f9875bb OS |
446 | "values \"never\", \"searching\", \"finding\", or \"always\". " |
447 | "Defaults to always."), | |
448 | ||
6056cddb OS |
449 | AP_INIT_TAKE1("VhostLDAPFallback", mod_vhost_ldap_set_fallback, NULL, RSRC_CONF, |
450 | "Set default virtual host which will be used when requested hostname" | |
451 | "is not found in LDAP database. This option can be used to display" | |
452 | "\"virtual host not found\" type of page."), | |
453 | ||
7f9875bb OS |
454 | {NULL} |
455 | }; | |
456 | ||
457 | #define FILTER_LENGTH MAX_STRING_LEN | |
b5043ccb | 458 | static int mod_vhost_ldap_translate_name(request_rec *r) |
7f9875bb | 459 | { |
b5043ccb OS |
460 | request_rec *top = (r->main)?r->main:r; |
461 | mod_vhost_ldap_request_t *reqc; | |
7f9875bb OS |
462 | int failures = 0; |
463 | const char **vals = NULL; | |
464 | char filtbuf[FILTER_LENGTH]; | |
8196fae3 | 465 | mod_vhost_ldap_config_t *conf = |
7f9875bb | 466 | (mod_vhost_ldap_config_t *)ap_get_module_config(r->server->module_config, &vhost_ldap_module); |
7f9875bb OS |
467 | util_ldap_connection_t *ldc = NULL; |
468 | int result = 0; | |
469 | const char *dn = NULL; | |
dc514643 | 470 | char *cgi; |
6056cddb OS |
471 | const char *hostname = NULL; |
472 | int is_fallback = 0; | |
4d9859cb OS |
473 | int sleep0 = 0; |
474 | int sleep1 = 1; | |
475 | int sleep; | |
303e7b48 | 476 | struct berval hostnamebv, shostnamebv; |
7f9875bb | 477 | |
b5043ccb | 478 | reqc = |
7f9875bb | 479 | (mod_vhost_ldap_request_t *)apr_pcalloc(r->pool, sizeof(mod_vhost_ldap_request_t)); |
8503d00b | 480 | memset(reqc, 0, sizeof(mod_vhost_ldap_request_t)); |
b5043ccb OS |
481 | |
482 | ap_set_module_config(r->request_config, &vhost_ldap_module, reqc); | |
7f9875bb | 483 | |
8196fae3 OS |
484 | // mod_vhost_ldap is disabled or we don't have LDAP Url |
485 | if ((conf->enabled != MVL_ENABLED)||(!conf->have_ldap_url)) { | |
7f9875bb OS |
486 | return DECLINED; |
487 | } | |
488 | ||
489 | start_over: | |
490 | ||
8196fae3 OS |
491 | if (conf->host) { |
492 | ldc = util_ldap_connection_find(r, conf->host, conf->port, | |
493 | conf->binddn, conf->bindpw, conf->deref, | |
494 | conf->secure); | |
7f9875bb OS |
495 | } |
496 | else { | |
497 | ap_log_rerror(APLOG_MARK, APLOG_WARNING|APLOG_NOERRNO, 0, r, | |
fb323462 | 498 | "[mod_vhost_ldap.c] translate: no conf->host - weird...?"); |
4cd7ff10 | 499 | return HTTP_INTERNAL_SERVER_ERROR; |
7f9875bb OS |
500 | } |
501 | ||
6056cddb | 502 | hostname = r->hostname; |
303e7b48 OS |
503 | if (hostname == NULL || hostname[0] == '\0') |
504 | goto null; | |
6056cddb OS |
505 | |
506 | fallback: | |
507 | ||
fb323462 | 508 | ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r, |
7f5e70ed OS |
509 | "[mod_vhost_ldap.c]: translating hostname [%s], uri [%s]", |
510 | hostname, r->uri); | |
7f9875bb | 511 | |
303e7b48 OS |
512 | ber_str2bv(hostname, 0, 0, &hostnamebv); |
513 | if (ldap_bv2escaped_filter_value(&hostnamebv, &shostnamebv) != 0) | |
514 | goto null; | |
515 | apr_snprintf(filtbuf, FILTER_LENGTH, "(&(%s)(|(apacheServerName=%s)(apacheServerAlias=%s)))", conf->filter, shostnamebv.bv_val, shostnamebv.bv_val); | |
516 | ber_memfree(shostnamebv.bv_val); | |
7f9875bb | 517 | |
8196fae3 | 518 | result = util_ldap_cache_getuserdn(r, ldc, conf->url, conf->basedn, conf->scope, |
7f9875bb OS |
519 | attributes, filtbuf, &dn, &vals); |
520 | ||
521 | util_ldap_connection_close(ldc); | |
522 | ||
523 | /* sanity check - if server is down, retry it up to 5 times */ | |
9122cbd6 OS |
524 | if (AP_LDAP_IS_SERVER_DOWN(result) || |
525 | (result == LDAP_TIMEOUT) || | |
526 | (result == LDAP_CONNECT_ERROR)) { | |
4d9859cb | 527 | sleep = sleep0 + sleep1; |
e78531ef | 528 | ap_log_rerror(APLOG_MARK, APLOG_WARNING|APLOG_NOERRNO, 0, r, |
7f5e70ed OS |
529 | "[mod_vhost_ldap.c]: lookup failure, retry number #[%d], sleeping for [%d] seconds", |
530 | failures, sleep); | |
5e2a6ff5 | 531 | if (failures++ < MAX_FAILURES) { |
9122cbd6 OS |
532 | /* Back-off exponentially */ |
533 | apr_sleep(apr_time_from_sec(sleep)); | |
4d9859cb OS |
534 | sleep0 = sleep1; |
535 | sleep1 = sleep; | |
7f9875bb | 536 | goto start_over; |
4cd7ff10 OS |
537 | } else { |
538 | return HTTP_GATEWAY_TIME_OUT; | |
539 | } | |
7f9875bb OS |
540 | } |
541 | ||
4cd7ff10 | 542 | if (result == LDAP_NO_SUCH_OBJECT) { |
a529b3b4 OS |
543 | if (strcmp(hostname, "*") != 0) { |
544 | if (strncmp(hostname, "*.", 2) == 0) | |
545 | hostname += 2; | |
546 | hostname += strcspn(hostname, "."); | |
547 | hostname = apr_pstrcat(r->pool, "*", hostname, NULL); | |
548 | ap_log_rerror(APLOG_MARK, APLOG_NOTICE|APLOG_NOERRNO, 0, r, | |
549 | "[mod_vhost_ldap.c] translate: " | |
550 | "virtual host not found, trying wildcard %s", | |
551 | hostname); | |
552 | goto fallback; | |
553 | } | |
554 | ||
303e7b48 | 555 | null: |
6056cddb OS |
556 | if (conf->fallback && (is_fallback++ <= 0)) { |
557 | ap_log_rerror(APLOG_MARK, APLOG_NOTICE|APLOG_NOERRNO, 0, r, | |
558 | "[mod_vhost_ldap.c] translate: " | |
559 | "virtual host %s not found, trying fallback %s", | |
560 | hostname, conf->fallback); | |
561 | hostname = conf->fallback; | |
562 | goto fallback; | |
563 | } | |
564 | ||
565 | ap_log_rerror(APLOG_MARK, APLOG_WARNING|APLOG_NOERRNO, 0, r, | |
566 | "[mod_vhost_ldap.c] translate: " | |
567 | "virtual host %s not found", | |
568 | hostname); | |
569 | ||
4cd7ff10 | 570 | return HTTP_BAD_REQUEST; |
6056cddb OS |
571 | } |
572 | ||
7f9875bb OS |
573 | /* handle bind failure */ |
574 | if (result != LDAP_SUCCESS) { | |
cbd5c5f5 | 575 | ap_log_rerror(APLOG_MARK, APLOG_WARNING|APLOG_NOERRNO, 0, r, |
7f9875bb | 576 | "[mod_vhost_ldap.c] translate: " |
6056cddb OS |
577 | "translate failed; virtual host %s; URI %s [%s]", |
578 | hostname, r->uri, ldap_err2string(result)); | |
4cd7ff10 | 579 | return HTTP_INTERNAL_SERVER_ERROR; |
7f9875bb OS |
580 | } |
581 | ||
582 | /* mark the user and DN */ | |
b5043ccb | 583 | reqc->dn = apr_pstrdup(r->pool, dn); |
7f9875bb OS |
584 | |
585 | /* Optimize */ | |
586 | if (vals) { | |
587 | int i = 0; | |
588 | while (attributes[i]) { | |
589 | ||
590 | if (strcasecmp (attributes[i], "apacheServerName") == 0) { | |
b5043ccb | 591 | reqc->name = apr_pstrdup (r->pool, vals[i]); |
7f9875bb OS |
592 | } |
593 | else if (strcasecmp (attributes[i], "apacheServerAdmin") == 0) { | |
b5043ccb | 594 | reqc->admin = apr_pstrdup (r->pool, vals[i]); |
7f9875bb OS |
595 | } |
596 | else if (strcasecmp (attributes[i], "apacheDocumentRoot") == 0) { | |
b5043ccb | 597 | reqc->docroot = apr_pstrdup (r->pool, vals[i]); |
7f9875bb OS |
598 | } |
599 | else if (strcasecmp (attributes[i], "apacheScriptAlias") == 0) { | |
b5043ccb | 600 | reqc->cgiroot = apr_pstrdup (r->pool, vals[i]); |
7f9875bb OS |
601 | } |
602 | else if (strcasecmp (attributes[i], "apacheSuexecUid") == 0) { | |
b5043ccb | 603 | reqc->uid = apr_pstrdup(r->pool, vals[i]); |
7f9875bb OS |
604 | } |
605 | else if (strcasecmp (attributes[i], "apacheSuexecGid") == 0) { | |
b5043ccb | 606 | reqc->gid = apr_pstrdup(r->pool, vals[i]); |
7f9875bb OS |
607 | } |
608 | i++; | |
609 | } | |
610 | } | |
611 | ||
6f705808 OS |
612 | ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r, |
613 | "[mod_vhost_ldap.c]: loaded from ldap: " | |
614 | "apacheServerName: %s, " | |
615 | "apacheServerAdmin: %s, " | |
616 | "apacheDocumentRoot: %s, " | |
617 | "apacheScriptAlias: %s, " | |
618 | "apacheSuexecUid: %s, " | |
b5043ccb OS |
619 | "apacheSuexecGid: %s", |
620 | reqc->name, reqc->admin, reqc->docroot, reqc->cgiroot, reqc->uid, reqc->gid); | |
6f705808 | 621 | |
b5043ccb | 622 | if ((reqc->name == NULL)||(reqc->docroot == NULL)) { |
7f9875bb OS |
623 | ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, r, |
624 | "[mod_vhost_ldap.c] translate: " | |
649a08e8 | 625 | "translate failed; ServerName or DocumentRoot not defined"); |
4cd7ff10 | 626 | return HTTP_INTERNAL_SERVER_ERROR; |
7f9875bb OS |
627 | } |
628 | ||
629 | cgi = NULL; | |
630 | ||
b5043ccb | 631 | if (reqc->cgiroot) { |
6f705808 OS |
632 | cgi = strstr(r->uri, "cgi-bin/"); |
633 | if (cgi && (cgi != r->uri + strspn(r->uri, "/"))) { | |
7f9875bb OS |
634 | cgi = NULL; |
635 | } | |
9ee2dda1 | 636 | } |
9ee2dda1 | 637 | if (cgi) { |
9122cbd6 | 638 | /* Set exact filename for CGI script */ |
dc514643 | 639 | cgi = apr_pstrcat(r->pool, reqc->cgiroot, cgi + strlen("cgi-bin"), NULL); |
e6d4a687 OS |
640 | if ((cgi = ap_server_root_relative(r->pool, cgi))) { |
641 | ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r, | |
7f5e70ed OS |
642 | "[mod_vhost_ldap.c]: ap_document_root is: %s", |
643 | ap_document_root(r)); | |
e6d4a687 OS |
644 | r->filename = cgi; |
645 | r->handler = "cgi-script"; | |
646 | apr_table_setn(r->notes, "alias-forced-type", r->handler); | |
647 | } | |
4cd7ff10 | 648 | } else if (r->uri[0] == '/') { |
9122cbd6 OS |
649 | /* we don't set r->filename here, and let other modules do it |
650 | * this allows other modules (mod_rewrite.c) to work as usual | |
651 | */ | |
652 | /* r->filename = apr_pstrcat (r->pool, reqc->docroot, r->uri, NULL); */ | |
4cd7ff10 | 653 | } else { |
9122cbd6 | 654 | /* We don't handle non-file requests here */ |
4cd7ff10 | 655 | return DECLINED; |
7f9875bb OS |
656 | } |
657 | ||
19d58500 | 658 | top->server->server_hostname = apr_pstrdup (top->pool, reqc->name); |
7f9875bb | 659 | |
b5043ccb | 660 | if (reqc->admin) { |
19d58500 | 661 | top->server->server_admin = apr_pstrdup (top->pool, reqc->admin); |
7f9875bb OS |
662 | } |
663 | ||
9122cbd6 OS |
664 | result = set_document_root(r, reqc->docroot); |
665 | if (result != OK) { | |
100c0189 | 666 | return HTTP_INTERNAL_SERVER_ERROR; |
9122cbd6 | 667 | } |
3c3c9019 | 668 | apr_table_setn(r->notes, "vhost-document-root", reqc->docroot); |
7f9875bb | 669 | |
aad41a70 OS |
670 | /* Hack to allow post-processing by other modules (mod_rewrite, mod_alias) */ |
671 | return DECLINED; | |
672 | } | |
673 | ||
7f9875bb OS |
674 | #ifdef HAVE_UNIX_SUEXEC |
675 | static ap_unix_identity_t *mod_vhost_ldap_get_suexec_id_doer(const request_rec * r) | |
676 | { | |
677 | ap_unix_identity_t *ugid = NULL; | |
8196fae3 | 678 | mod_vhost_ldap_config_t *conf = |
7f9875bb OS |
679 | (mod_vhost_ldap_config_t *)ap_get_module_config(r->server->module_config, |
680 | &vhost_ldap_module); | |
681 | mod_vhost_ldap_request_t *req = | |
682 | (mod_vhost_ldap_request_t *)ap_get_module_config(r->request_config, | |
683 | &vhost_ldap_module); | |
684 | ||
685 | uid_t uid = -1; | |
686 | gid_t gid = -1; | |
687 | ||
8196fae3 OS |
688 | // mod_vhost_ldap is disabled or we don't have LDAP Url |
689 | if ((conf->enabled != MVL_ENABLED)||(!conf->have_ldap_url)) { | |
7f9875bb OS |
690 | return NULL; |
691 | } | |
692 | ||
693 | if ((req == NULL)||(req->uid == NULL)||(req->gid == NULL)) { | |
694 | return NULL; | |
695 | } | |
696 | ||
697 | if ((ugid = apr_palloc(r->pool, sizeof(ap_unix_identity_t))) == NULL) { | |
698 | return NULL; | |
699 | } | |
700 | ||
701 | uid = (uid_t)atoll(req->uid); | |
702 | gid = (gid_t)atoll(req->gid); | |
703 | ||
eea38f6d | 704 | if ((uid < MIN_UID)||(gid < MIN_GID)) { |
7f9875bb OS |
705 | return NULL; |
706 | } | |
707 | ||
708 | ugid->uid = uid; | |
709 | ugid->gid = gid; | |
710 | ugid->userdir = 0; | |
711 | ||
712 | return ugid; | |
713 | } | |
714 | #endif | |
715 | ||
7f5e70ed OS |
716 | static int mod_vhost_ldap_fixups(request_rec *r) |
717 | { | |
3c3c9019 OS |
718 | char *docroot = |
719 | apr_table_get(r->notes, "vhost-document-root"); | |
7f5e70ed | 720 | |
3c3c9019 OS |
721 | if (docroot != NULL) |
722 | return set_document_root(r, ); | |
723 | else | |
724 | return DECLINED; | |
7f5e70ed OS |
725 | } |
726 | ||
7f9875bb OS |
727 | static void |
728 | mod_vhost_ldap_register_hooks (apr_pool_t * p) | |
729 | { | |
aad41a70 OS |
730 | |
731 | /* | |
732 | * Run before mod_rewrite | |
733 | */ | |
734 | static const char * const aszRewrite[]={ "mod_rewrite.c", NULL }; | |
735 | ||
7f9875bb | 736 | ap_hook_post_config(mod_vhost_ldap_post_config, NULL, NULL, APR_HOOK_MIDDLE); |
aad41a70 | 737 | ap_hook_translate_name(mod_vhost_ldap_translate_name, NULL, aszRewrite, APR_HOOK_FIRST); |
7f9875bb OS |
738 | #ifdef HAVE_UNIX_SUEXEC |
739 | ap_hook_get_suexec_identity(mod_vhost_ldap_get_suexec_id_doer, NULL, NULL, APR_HOOK_MIDDLE); | |
740 | #endif | |
8503d00b | 741 | #if (APR_MAJOR_VERSION >= 1) |
3b8a47e0 OS |
742 | ap_hook_optional_fn_retrieve(ImportULDAPOptFn,NULL,NULL,APR_HOOK_MIDDLE); |
743 | #endif | |
7f5e70ed OS |
744 | |
745 | ap_hook_fixups(mod_vhost_ldap_fixups, NULL, NULL, APR_HOOK_LAST); | |
7f9875bb OS |
746 | } |
747 | ||
748 | module AP_MODULE_DECLARE_DATA vhost_ldap_module = { | |
749 | STANDARD20_MODULE_STUFF, | |
750 | NULL, | |
751 | NULL, | |
752 | mod_vhost_ldap_create_server_config, | |
8196fae3 | 753 | mod_vhost_ldap_merge_server_config, |
7f9875bb OS |
754 | mod_vhost_ldap_cmds, |
755 | mod_vhost_ldap_register_hooks, | |
756 | }; |