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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 | ||
23 | #define CORE_PRIVATE | |
24 | ||
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" | |
32 | #include "apr_version.h" | |
33 | #include "apr_ldap.h" | |
34 | #include "apr_strings.h" | |
35 | #include "apr_reslist.h" | |
36 | #include "util_ldap.h" | |
37 | ||
38 | #if !defined(APU_HAS_LDAP) && !defined(APR_HAS_LDAP) | |
39 | #error mod_vhost_ldap requires APR-util to have LDAP support built in | |
40 | #endif | |
41 | ||
42 | #if !defined(WIN32) && !defined(OS2) && !defined(BEOS) && !defined(NETWARE) | |
43 | #define HAVE_UNIX_SUEXEC | |
44 | #endif | |
45 | ||
46 | #ifdef HAVE_UNIX_SUEXEC | |
47 | #include "unixd.h" /* Contains the suexec_identity hook used on Unix */ | |
48 | #endif | |
49 | ||
50 | #define MIN_UID 100 | |
51 | #define MIN_GID 100 | |
52 | ||
53 | module AP_MODULE_DECLARE_DATA vhost_ldap_module; | |
54 | ||
55 | typedef enum { | |
56 | MVL_UNSET, MVL_DISABLED, MVL_ENABLED | |
57 | } mod_vhost_ldap_status_e; | |
58 | ||
59 | typedef struct mod_vhost_ldap_config_t { | |
60 | mod_vhost_ldap_status_e enabled; /* Is vhost_ldap enabled? */ | |
61 | ||
62 | /* These parameters are all derived from the VhostLDAPURL directive */ | |
63 | char *url; /* String representation of LDAP URL */ | |
64 | ||
65 | char *host; /* Name of the LDAP server (or space separated list) */ | |
66 | int port; /* Port of the LDAP server */ | |
67 | char *basedn; /* Base DN to do all searches from */ | |
68 | int scope; /* Scope of the search */ | |
69 | char *filter; /* Filter to further limit the search */ | |
70 | deref_options deref; /* how to handle alias dereferening */ | |
71 | ||
72 | char *binddn; /* DN to bind to server (can be NULL) */ | |
73 | char *bindpw; /* Password to bind to server (can be NULL) */ | |
74 | ||
75 | int have_deref; /* Set if we have found an Deref option */ | |
76 | int have_ldap_url; /* Set if we have found an LDAP url */ | |
77 | ||
78 | int secure; /* True if SSL connections are requested */ | |
79 | ||
80 | char *fallback; /* Fallback virtual host */ | |
81 | ||
82 | } mod_vhost_ldap_config_t; | |
83 | ||
84 | typedef struct mod_vhost_ldap_request_t { | |
85 | char *dn; /* The saved dn from a successful search */ | |
86 | char *name; /* ServerName */ | |
87 | char *admin; /* ServerAdmin */ | |
88 | char *docroot; /* DocumentRoot */ | |
89 | char *cgiroot; /* ScriptAlias */ | |
90 | char *uid; /* Suexec Uid */ | |
91 | char *gid; /* Suexec Gid */ | |
92 | } mod_vhost_ldap_request_t; | |
93 | ||
94 | char *attributes[] = | |
95 | { "apacheServerName", "apacheDocumentRoot", "apacheScriptAlias", "apacheSuexecUid", "apacheSuexecGid", "apacheServerAdmin", 0 }; | |
96 | ||
97 | #if (APR_MAJOR_VERSION >= 1) | |
98 | static APR_OPTIONAL_FN_TYPE(uldap_connection_close) *util_ldap_connection_close; | |
99 | static APR_OPTIONAL_FN_TYPE(uldap_connection_find) *util_ldap_connection_find; | |
100 | static APR_OPTIONAL_FN_TYPE(uldap_cache_comparedn) *util_ldap_cache_comparedn; | |
101 | static APR_OPTIONAL_FN_TYPE(uldap_cache_compare) *util_ldap_cache_compare; | |
102 | static APR_OPTIONAL_FN_TYPE(uldap_cache_checkuserid) *util_ldap_cache_checkuserid; | |
103 | static APR_OPTIONAL_FN_TYPE(uldap_cache_getuserdn) *util_ldap_cache_getuserdn; | |
104 | static APR_OPTIONAL_FN_TYPE(uldap_ssl_supported) *util_ldap_ssl_supported; | |
105 | ||
106 | static void ImportULDAPOptFn(void) | |
107 | { | |
108 | util_ldap_connection_close = APR_RETRIEVE_OPTIONAL_FN(uldap_connection_close); | |
109 | util_ldap_connection_find = APR_RETRIEVE_OPTIONAL_FN(uldap_connection_find); | |
110 | util_ldap_cache_comparedn = APR_RETRIEVE_OPTIONAL_FN(uldap_cache_comparedn); | |
111 | util_ldap_cache_compare = APR_RETRIEVE_OPTIONAL_FN(uldap_cache_compare); | |
112 | util_ldap_cache_checkuserid = APR_RETRIEVE_OPTIONAL_FN(uldap_cache_checkuserid); | |
113 | util_ldap_cache_getuserdn = APR_RETRIEVE_OPTIONAL_FN(uldap_cache_getuserdn); | |
114 | util_ldap_ssl_supported = APR_RETRIEVE_OPTIONAL_FN(uldap_ssl_supported); | |
115 | } | |
116 | #endif | |
117 | ||
118 | static int mod_vhost_ldap_post_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s) | |
119 | { | |
120 | /* make sure that mod_ldap (util_ldap) is loaded */ | |
121 | if (ap_find_linked_module("util_ldap.c") == NULL) { | |
122 | ap_log_error(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, s, | |
123 | "Module mod_ldap missing. Mod_ldap (aka. util_ldap) " | |
124 | "must be loaded in order for mod_vhost_ldap to function properly"); | |
125 | return HTTP_INTERNAL_SERVER_ERROR; | |
126 | ||
127 | } | |
128 | ||
129 | ap_add_version_component(p, MOD_VHOST_LDAP_VERSION); | |
130 | ||
131 | return OK; | |
132 | } | |
133 | ||
134 | static void * | |
135 | mod_vhost_ldap_create_server_config (apr_pool_t *p, server_rec *s) | |
136 | { | |
137 | mod_vhost_ldap_config_t *conf = | |
138 | (mod_vhost_ldap_config_t *)apr_pcalloc(p, sizeof (mod_vhost_ldap_config_t)); | |
139 | ||
140 | conf->enabled = MVL_UNSET; | |
141 | conf->have_ldap_url = 0; | |
142 | conf->have_deref = 0; | |
143 | conf->binddn = NULL; | |
144 | conf->bindpw = NULL; | |
145 | conf->deref = always; | |
146 | conf->fallback = NULL; | |
147 | ||
148 | return conf; | |
149 | } | |
150 | ||
151 | static void * | |
152 | mod_vhost_ldap_merge_server_config(apr_pool_t *p, void *parentv, void *childv) | |
153 | { | |
154 | mod_vhost_ldap_config_t *parent = (mod_vhost_ldap_config_t *) parentv; | |
155 | mod_vhost_ldap_config_t *child = (mod_vhost_ldap_config_t *) childv; | |
156 | mod_vhost_ldap_config_t *conf = | |
157 | (mod_vhost_ldap_config_t *)apr_pcalloc(p, sizeof(mod_vhost_ldap_config_t)); | |
158 | ||
159 | if (child->enabled == MVL_UNSET) { | |
160 | conf->enabled = parent->enabled; | |
161 | } else { | |
162 | conf->enabled = child->enabled; | |
163 | } | |
164 | ||
165 | if (child->have_ldap_url) { | |
166 | conf->have_ldap_url = child->have_ldap_url; | |
167 | conf->url = child->url; | |
168 | conf->host = child->host; | |
169 | conf->port = child->port; | |
170 | conf->basedn = child->basedn; | |
171 | conf->scope = child->scope; | |
172 | conf->filter = child->filter; | |
173 | conf->secure = child->secure; | |
174 | } else { | |
175 | conf->have_ldap_url = parent->have_ldap_url; | |
176 | conf->url = parent->url; | |
177 | conf->host = parent->host; | |
178 | conf->port = parent->port; | |
179 | conf->basedn = parent->basedn; | |
180 | conf->scope = parent->scope; | |
181 | conf->filter = parent->filter; | |
182 | conf->secure = parent->secure; | |
183 | } | |
184 | if (child->have_deref) { | |
185 | conf->have_deref = child->have_deref; | |
186 | conf->deref = child->deref; | |
187 | } else { | |
188 | conf->have_deref = parent->have_deref; | |
189 | conf->deref = parent->deref; | |
190 | } | |
191 | ||
192 | conf->binddn = (child->binddn ? child->binddn : parent->binddn); | |
193 | conf->bindpw = (child->bindpw ? child->bindpw : parent->bindpw); | |
194 | ||
195 | conf->fallback = (child->fallback ? child->fallback : parent->fallback); | |
196 | ||
197 | return conf; | |
198 | } | |
199 | ||
200 | /* | |
201 | * Use the ldap url parsing routines to break up the ldap url into | |
202 | * host and port. | |
203 | */ | |
204 | static const char *mod_vhost_ldap_parse_url(cmd_parms *cmd, | |
205 | void *dummy, | |
206 | const char *url) | |
207 | { | |
208 | int result; | |
209 | apr_ldap_url_desc_t *urld; | |
210 | #if (APR_MAJOR_VERSION >= 1) | |
211 | apr_ldap_err_t *result_err; | |
212 | #endif | |
213 | ||
214 | mod_vhost_ldap_config_t *conf = | |
215 | (mod_vhost_ldap_config_t *)ap_get_module_config(cmd->server->module_config, | |
216 | &vhost_ldap_module); | |
217 | ||
218 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
219 | cmd->server, "[mod_vhost_ldap.c] url parse: `%s'", | |
220 | url); | |
221 | ||
222 | #if (APR_MAJOR_VERSION >= 1) /* for apache >= 2.2 */ | |
223 | result = apr_ldap_url_parse(cmd->pool, url, &(urld), &(result_err)); | |
224 | if (result != LDAP_SUCCESS) { | |
225 | return result_err->reason; | |
226 | } | |
227 | #else | |
228 | result = apr_ldap_url_parse(url, &(urld)); | |
229 | if (result != LDAP_SUCCESS) { | |
230 | switch (result) { | |
231 | case LDAP_URL_ERR_NOTLDAP: | |
232 | return "LDAP URL does not begin with ldap://"; | |
233 | case LDAP_URL_ERR_NODN: | |
234 | return "LDAP URL does not have a DN"; | |
235 | case LDAP_URL_ERR_BADSCOPE: | |
236 | return "LDAP URL has an invalid scope"; | |
237 | case LDAP_URL_ERR_MEM: | |
238 | return "Out of memory parsing LDAP URL"; | |
239 | default: | |
240 | return "Could not parse LDAP URL"; | |
241 | } | |
242 | } | |
243 | #endif | |
244 | conf->url = apr_pstrdup(cmd->pool, url); | |
245 | ||
246 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
247 | cmd->server, "[mod_vhost_ldap.c] url parse: Host: %s", urld->lud_host); | |
248 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
249 | cmd->server, "[mod_vhost_ldap.c] url parse: Port: %d", urld->lud_port); | |
250 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
251 | cmd->server, "[mod_vhost_ldap.c] url parse: DN: %s", urld->lud_dn); | |
252 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
253 | cmd->server, "[mod_vhost_ldap.c] url parse: attrib: %s", urld->lud_attrs? urld->lud_attrs[0] : "(null)"); | |
254 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
255 | cmd->server, "[mod_vhost_ldap.c] url parse: scope: %s", | |
256 | (urld->lud_scope == LDAP_SCOPE_SUBTREE? "subtree" : | |
257 | urld->lud_scope == LDAP_SCOPE_BASE? "base" : | |
258 | urld->lud_scope == LDAP_SCOPE_ONELEVEL? "onelevel" : "unknown")); | |
259 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
260 | cmd->server, "[mod_vhost_ldap.c] url parse: filter: %s", urld->lud_filter); | |
261 | ||
262 | /* Set all the values, or at least some sane defaults */ | |
263 | if (conf->host) { | |
264 | char *p = apr_palloc(cmd->pool, strlen(conf->host) + strlen(urld->lud_host) + 2); | |
265 | strcpy(p, urld->lud_host); | |
266 | strcat(p, " "); | |
267 | strcat(p, conf->host); | |
268 | conf->host = p; | |
269 | } | |
270 | else { | |
271 | conf->host = urld->lud_host? apr_pstrdup(cmd->pool, urld->lud_host) : "localhost"; | |
272 | } | |
273 | conf->basedn = urld->lud_dn? apr_pstrdup(cmd->pool, urld->lud_dn) : ""; | |
274 | ||
275 | conf->scope = urld->lud_scope == LDAP_SCOPE_ONELEVEL ? | |
276 | LDAP_SCOPE_ONELEVEL : LDAP_SCOPE_SUBTREE; | |
277 | ||
278 | if (urld->lud_filter) { | |
279 | if (urld->lud_filter[0] == '(') { | |
280 | /* | |
281 | * Get rid of the surrounding parens; later on when generating the | |
282 | * filter, they'll be put back. | |
283 | */ | |
284 | conf->filter = apr_pstrdup(cmd->pool, urld->lud_filter+1); | |
285 | conf->filter[strlen(conf->filter)-1] = '\0'; | |
286 | } | |
287 | else { | |
288 | conf->filter = apr_pstrdup(cmd->pool, urld->lud_filter); | |
289 | } | |
290 | } | |
291 | else { | |
292 | conf->filter = "objectClass=apacheConfig"; | |
293 | } | |
294 | ||
295 | /* "ldaps" indicates secure ldap connections desired | |
296 | */ | |
297 | if (strncasecmp(url, "ldaps", 5) == 0) | |
298 | { | |
299 | conf->secure = 1; | |
300 | conf->port = urld->lud_port? urld->lud_port : LDAPS_PORT; | |
301 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, cmd->server, | |
302 | "LDAP: vhost_ldap using SSL connections"); | |
303 | } | |
304 | else | |
305 | { | |
306 | conf->secure = 0; | |
307 | conf->port = urld->lud_port? urld->lud_port : LDAP_PORT; | |
308 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, cmd->server, | |
309 | "LDAP: vhost_ldap not using SSL connections"); | |
310 | } | |
311 | ||
312 | conf->have_ldap_url = 1; | |
313 | #if (APR_MAJOR_VERSION < 1) /* free only required for older apr */ | |
314 | apr_ldap_free_urldesc(urld); | |
315 | #endif | |
316 | return NULL; | |
317 | } | |
318 | ||
319 | static const char *mod_vhost_ldap_set_enabled(cmd_parms *cmd, void *dummy, int enabled) | |
320 | { | |
321 | mod_vhost_ldap_config_t *conf = | |
322 | (mod_vhost_ldap_config_t *)ap_get_module_config(cmd->server->module_config, | |
323 | &vhost_ldap_module); | |
324 | ||
325 | conf->enabled = (enabled) ? MVL_ENABLED : MVL_DISABLED; | |
326 | ||
327 | return NULL; | |
328 | } | |
329 | ||
330 | static const char *mod_vhost_ldap_set_binddn(cmd_parms *cmd, void *dummy, const char *binddn) | |
331 | { | |
332 | mod_vhost_ldap_config_t *conf = | |
333 | (mod_vhost_ldap_config_t *)ap_get_module_config(cmd->server->module_config, | |
334 | &vhost_ldap_module); | |
335 | ||
336 | conf->binddn = apr_pstrdup(cmd->pool, binddn); | |
337 | return NULL; | |
338 | } | |
339 | ||
340 | static const char *mod_vhost_ldap_set_bindpw(cmd_parms *cmd, void *dummy, const char *bindpw) | |
341 | { | |
342 | mod_vhost_ldap_config_t *conf = | |
343 | (mod_vhost_ldap_config_t *)ap_get_module_config(cmd->server->module_config, | |
344 | &vhost_ldap_module); | |
345 | ||
346 | conf->bindpw = apr_pstrdup(cmd->pool, bindpw); | |
347 | return NULL; | |
348 | } | |
349 | ||
350 | static const char *mod_vhost_ldap_set_deref(cmd_parms *cmd, void *dummy, const char *deref) | |
351 | { | |
352 | mod_vhost_ldap_config_t *conf = | |
353 | (mod_vhost_ldap_config_t *)ap_get_module_config (cmd->server->module_config, | |
354 | &vhost_ldap_module); | |
355 | ||
356 | if (strcmp(deref, "never") == 0 || strcasecmp(deref, "off") == 0) { | |
357 | conf->deref = never; | |
358 | conf->have_deref = 1; | |
359 | } | |
360 | else if (strcmp(deref, "searching") == 0) { | |
361 | conf->deref = searching; | |
362 | conf->have_deref = 1; | |
363 | } | |
364 | else if (strcmp(deref, "finding") == 0) { | |
365 | conf->deref = finding; | |
366 | conf->have_deref = 1; | |
367 | } | |
368 | else if (strcmp(deref, "always") == 0 || strcasecmp(deref, "on") == 0) { | |
369 | conf->deref = always; | |
370 | conf->have_deref = 1; | |
371 | } | |
372 | else { | |
373 | return "Unrecognized value for VhostLDAPAliasDereference directive"; | |
374 | } | |
375 | return NULL; | |
376 | } | |
377 | ||
378 | static const char *mod_vhost_ldap_set_fallback(cmd_parms *cmd, void *dummy, const char *fallback) | |
379 | { | |
380 | mod_vhost_ldap_config_t *conf = | |
381 | (mod_vhost_ldap_config_t *)ap_get_module_config(cmd->server->module_config, | |
382 | &vhost_ldap_module); | |
383 | ||
384 | conf->fallback = apr_pstrdup(cmd->pool, fallback); | |
385 | return NULL; | |
386 | } | |
387 | ||
388 | command_rec mod_vhost_ldap_cmds[] = { | |
389 | AP_INIT_TAKE1("VhostLDAPURL", mod_vhost_ldap_parse_url, NULL, RSRC_CONF, | |
390 | "URL to define LDAP connection. This should be an RFC 2255 compliant\n" | |
391 | "URL of the form ldap://host[:port]/basedn[?attrib[?scope[?filter]]].\n" | |
392 | "<ul>\n" | |
393 | "<li>Host is the name of the LDAP server. Use a space separated list of hosts \n" | |
394 | "to specify redundant servers.\n" | |
395 | "<li>Port is optional, and specifies the port to connect to.\n" | |
396 | "<li>basedn specifies the base DN to start searches from\n" | |
397 | "</ul>\n"), | |
398 | ||
399 | AP_INIT_TAKE1 ("VhostLDAPBindDN", mod_vhost_ldap_set_binddn, NULL, RSRC_CONF, | |
400 | "DN to use to bind to LDAP server. If not provided, will do an anonymous bind."), | |
401 | ||
402 | AP_INIT_TAKE1("VhostLDAPBindPassword", mod_vhost_ldap_set_bindpw, NULL, RSRC_CONF, | |
403 | "Password to use to bind to LDAP server. If not provided, will do an anonymous bind."), | |
404 | ||
405 | AP_INIT_FLAG("VhostLDAPEnabled", mod_vhost_ldap_set_enabled, NULL, RSRC_CONF, | |
406 | "Set to off to disable vhost_ldap, even if it's been enabled in a higher tree"), | |
407 | ||
408 | AP_INIT_TAKE1("VhostLDAPDereferenceAliases", mod_vhost_ldap_set_deref, NULL, RSRC_CONF, | |
409 | "Determines how aliases are handled during a search. Can be one of the" | |
410 | "values \"never\", \"searching\", \"finding\", or \"always\". " | |
411 | "Defaults to always."), | |
412 | ||
413 | AP_INIT_TAKE1("VhostLDAPFallback", mod_vhost_ldap_set_fallback, NULL, RSRC_CONF, | |
414 | "Set default virtual host which will be used when requested hostname" | |
415 | "is not found in LDAP database. This option can be used to display" | |
416 | "\"virtual host not found\" type of page."), | |
417 | ||
418 | {NULL} | |
419 | }; | |
420 | ||
421 | #define FILTER_LENGTH MAX_STRING_LEN | |
422 | static int mod_vhost_ldap_translate_name(request_rec *r) | |
423 | { | |
424 | request_rec *top = (r->main)?r->main:r; | |
425 | mod_vhost_ldap_request_t *reqc; | |
426 | apr_table_t *e; | |
427 | int failures = 0; | |
428 | const char **vals = NULL; | |
429 | char filtbuf[FILTER_LENGTH]; | |
430 | mod_vhost_ldap_config_t *conf = | |
431 | (mod_vhost_ldap_config_t *)ap_get_module_config(r->server->module_config, &vhost_ldap_module); | |
432 | core_server_config * core = | |
433 | (core_server_config *) ap_get_module_config(r->server->module_config, &core_module); | |
434 | util_ldap_connection_t *ldc = NULL; | |
435 | int result = 0; | |
436 | const char *dn = NULL; | |
437 | char *cgi; | |
438 | const char *hostname = NULL; | |
439 | int is_fallback = 0; | |
440 | ||
441 | reqc = | |
442 | (mod_vhost_ldap_request_t *)apr_pcalloc(r->pool, sizeof(mod_vhost_ldap_request_t)); | |
443 | memset(reqc, 0, sizeof(mod_vhost_ldap_request_t)); | |
444 | ||
445 | ap_set_module_config(r->request_config, &vhost_ldap_module, reqc); | |
446 | ||
447 | // mod_vhost_ldap is disabled or we don't have LDAP Url | |
448 | if ((conf->enabled != MVL_ENABLED)||(!conf->have_ldap_url)) { | |
449 | return DECLINED; | |
450 | } | |
451 | ||
452 | start_over: | |
453 | ||
454 | if (conf->host) { | |
455 | ldc = util_ldap_connection_find(r, conf->host, conf->port, | |
456 | conf->binddn, conf->bindpw, conf->deref, | |
457 | conf->secure); | |
458 | } | |
459 | else { | |
460 | ap_log_rerror(APLOG_MARK, APLOG_WARNING|APLOG_NOERRNO, 0, r, | |
461 | "[mod_vhost_ldap.c] translate: no conf->host - weird...?"); | |
462 | return DECLINED; | |
463 | } | |
464 | ||
465 | hostname = r->hostname; | |
466 | ||
467 | fallback: | |
468 | ||
469 | ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r, | |
470 | "[mod_vhost_ldap.c]: translating %s", r->uri); | |
471 | ||
472 | apr_snprintf(filtbuf, FILTER_LENGTH, "(&(%s)(|(apacheServerName=%s)(apacheServerAlias=%s)))", conf->filter, hostname, hostname); | |
473 | ||
474 | result = util_ldap_cache_getuserdn(r, ldc, conf->url, conf->basedn, conf->scope, | |
475 | attributes, filtbuf, &dn, &vals); | |
476 | ||
477 | util_ldap_connection_close(ldc); | |
478 | ||
479 | /* sanity check - if server is down, retry it up to 5 times */ | |
480 | if (result == LDAP_SERVER_DOWN) { | |
481 | if (failures++ <= 5) { | |
482 | goto start_over; | |
483 | } | |
484 | } | |
485 | ||
486 | if ((result == LDAP_NO_SUCH_OBJECT)) { | |
487 | if (conf->fallback && (is_fallback++ <= 0)) { | |
488 | ap_log_rerror(APLOG_MARK, APLOG_NOTICE|APLOG_NOERRNO, 0, r, | |
489 | "[mod_vhost_ldap.c] translate: " | |
490 | "virtual host %s not found, trying fallback %s", | |
491 | hostname, conf->fallback); | |
492 | hostname = conf->fallback; | |
493 | goto fallback; | |
494 | } | |
495 | ||
496 | ap_log_rerror(APLOG_MARK, APLOG_WARNING|APLOG_NOERRNO, 0, r, | |
497 | "[mod_vhost_ldap.c] translate: " | |
498 | "virtual host %s not found", | |
499 | hostname); | |
500 | ||
501 | return DECLINED; | |
502 | } | |
503 | ||
504 | /* handle bind failure */ | |
505 | if (result != LDAP_SUCCESS) { | |
506 | ap_log_rerror(APLOG_MARK, APLOG_WARNING|APLOG_NOERRNO, 0, r, | |
507 | "[mod_vhost_ldap.c] translate: " | |
508 | "translate failed; virtual host %s; URI %s [%s]", | |
509 | hostname, r->uri, ldap_err2string(result)); | |
510 | return DECLINED; | |
511 | } | |
512 | ||
513 | /* mark the user and DN */ | |
514 | reqc->dn = apr_pstrdup(r->pool, dn); | |
515 | ||
516 | /* Optimize */ | |
517 | if (vals) { | |
518 | int i = 0; | |
519 | while (attributes[i]) { | |
520 | ||
521 | if (strcasecmp (attributes[i], "apacheServerName") == 0) { | |
522 | reqc->name = apr_pstrdup (r->pool, vals[i]); | |
523 | } | |
524 | else if (strcasecmp (attributes[i], "apacheServerAdmin") == 0) { | |
525 | reqc->admin = apr_pstrdup (r->pool, vals[i]); | |
526 | } | |
527 | else if (strcasecmp (attributes[i], "apacheDocumentRoot") == 0) { | |
528 | reqc->docroot = apr_pstrdup (r->pool, vals[i]); | |
529 | } | |
530 | else if (strcasecmp (attributes[i], "apacheScriptAlias") == 0) { | |
531 | reqc->cgiroot = apr_pstrdup (r->pool, vals[i]); | |
532 | } | |
533 | else if (strcasecmp (attributes[i], "apacheSuexecUid") == 0) { | |
534 | reqc->uid = apr_pstrdup(r->pool, vals[i]); | |
535 | } | |
536 | else if (strcasecmp (attributes[i], "apacheSuexecGid") == 0) { | |
537 | reqc->gid = apr_pstrdup(r->pool, vals[i]); | |
538 | } | |
539 | i++; | |
540 | } | |
541 | } | |
542 | ||
543 | ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r, | |
544 | "[mod_vhost_ldap.c]: loaded from ldap: " | |
545 | "apacheServerName: %s, " | |
546 | "apacheServerAdmin: %s, " | |
547 | "apacheDocumentRoot: %s, " | |
548 | "apacheScriptAlias: %s, " | |
549 | "apacheSuexecUid: %s, " | |
550 | "apacheSuexecGid: %s", | |
551 | reqc->name, reqc->admin, reqc->docroot, reqc->cgiroot, reqc->uid, reqc->gid); | |
552 | ||
553 | if ((reqc->name == NULL)||(reqc->docroot == NULL)) { | |
554 | ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, r, | |
555 | "[mod_vhost_ldap.c] translate: " | |
556 | "translate failed; ServerName or DocumentRoot not defined"); | |
557 | return DECLINED; | |
558 | } | |
559 | ||
560 | cgi = NULL; | |
561 | ||
562 | if (reqc->cgiroot) { | |
563 | cgi = strstr(r->uri, "cgi-bin/"); | |
564 | if (cgi && (cgi != r->uri + strspn(r->uri, "/"))) { | |
565 | cgi = NULL; | |
566 | } | |
567 | } | |
568 | if (cgi) { | |
569 | r->filename = apr_pstrcat (r->pool, reqc->cgiroot, cgi + strlen("cgi-bin"), NULL); | |
570 | r->handler = "cgi-script"; | |
571 | apr_table_setn(r->notes, "alias-forced-type", r->handler); | |
572 | } else if (r->uri[0] == '/') { | |
573 | r->filename = apr_pstrcat (r->pool, reqc->docroot, r->uri, NULL); | |
574 | } else { | |
575 | return DECLINED; | |
576 | } | |
577 | ||
578 | top->server->server_hostname = apr_pstrdup (top->pool, reqc->name); | |
579 | ||
580 | if (reqc->admin) { | |
581 | top->server->server_admin = apr_pstrdup (top->pool, reqc->admin); | |
582 | } | |
583 | ||
584 | // set environment variables | |
585 | e = top->subprocess_env; | |
586 | apr_table_addn (e, "SERVER_ROOT", reqc->docroot); | |
587 | ||
588 | core->ap_document_root = apr_pstrdup(top->pool, reqc->docroot); | |
589 | ||
590 | ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r, | |
591 | "[mod_vhost_ldap.c]: translated to %s", r->filename); | |
592 | ||
593 | return OK; | |
594 | } | |
595 | ||
596 | #ifdef HAVE_UNIX_SUEXEC | |
597 | static ap_unix_identity_t *mod_vhost_ldap_get_suexec_id_doer(const request_rec * r) | |
598 | { | |
599 | ap_unix_identity_t *ugid = NULL; | |
600 | mod_vhost_ldap_config_t *conf = | |
601 | (mod_vhost_ldap_config_t *)ap_get_module_config(r->server->module_config, | |
602 | &vhost_ldap_module); | |
603 | mod_vhost_ldap_request_t *req = | |
604 | (mod_vhost_ldap_request_t *)ap_get_module_config(r->request_config, | |
605 | &vhost_ldap_module); | |
606 | ||
607 | uid_t uid = -1; | |
608 | gid_t gid = -1; | |
609 | ||
610 | // mod_vhost_ldap is disabled or we don't have LDAP Url | |
611 | if ((conf->enabled != MVL_ENABLED)||(!conf->have_ldap_url)) { | |
612 | return NULL; | |
613 | } | |
614 | ||
615 | if ((req == NULL)||(req->uid == NULL)||(req->gid == NULL)) { | |
616 | return NULL; | |
617 | } | |
618 | ||
619 | if ((ugid = apr_palloc(r->pool, sizeof(ap_unix_identity_t))) == NULL) { | |
620 | return NULL; | |
621 | } | |
622 | ||
623 | uid = (uid_t)atoll(req->uid); | |
624 | gid = (gid_t)atoll(req->gid); | |
625 | ||
626 | if ((uid < MIN_UID)||(gid < MIN_GID)) { | |
627 | return NULL; | |
628 | } | |
629 | ||
630 | ugid->uid = uid; | |
631 | ugid->gid = gid; | |
632 | ugid->userdir = 0; | |
633 | ||
634 | return ugid; | |
635 | } | |
636 | #endif | |
637 | ||
638 | static void | |
639 | mod_vhost_ldap_register_hooks (apr_pool_t * p) | |
640 | { | |
641 | ap_hook_post_config(mod_vhost_ldap_post_config, NULL, NULL, APR_HOOK_MIDDLE); | |
642 | ap_hook_translate_name(mod_vhost_ldap_translate_name, NULL, NULL, APR_HOOK_MIDDLE); | |
643 | #ifdef HAVE_UNIX_SUEXEC | |
644 | ap_hook_get_suexec_identity(mod_vhost_ldap_get_suexec_id_doer, NULL, NULL, APR_HOOK_MIDDLE); | |
645 | #endif | |
646 | #if (APR_MAJOR_VERSION >= 1) | |
647 | ap_hook_optional_fn_retrieve(ImportULDAPOptFn,NULL,NULL,APR_HOOK_MIDDLE); | |
648 | #endif | |
649 | } | |
650 | ||
651 | module AP_MODULE_DECLARE_DATA vhost_ldap_module = { | |
652 | STANDARD20_MODULE_STUFF, | |
653 | NULL, | |
654 | NULL, | |
655 | mod_vhost_ldap_create_server_config, | |
656 | mod_vhost_ldap_merge_server_config, | |
657 | mod_vhost_ldap_cmds, | |
658 | mod_vhost_ldap_register_hooks, | |
659 | }; |