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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 OS |
33 | #include "apr_ldap.h" |
34 | #include "apr_strings.h" | |
35 | #include "apr_reslist.h" | |
36 | #include "util_ldap.h" | |
37 | ||
3b8a47e0 | 38 | #if !defined(APU_HAS_LDAP) && !defined(APR_HAS_LDAP) |
7f9875bb OS |
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 | ||
d129bb81 OS |
50 | #define MIN_UID 100 |
51 | #define MIN_GID 100 | |
889991ea | 52 | const char USERDIR[] = "web_scripts"; |
7f9875bb OS |
53 | |
54 | module AP_MODULE_DECLARE_DATA vhost_ldap_module; | |
55 | ||
8196fae3 OS |
56 | typedef enum { |
57 | MVL_UNSET, MVL_DISABLED, MVL_ENABLED | |
58 | } mod_vhost_ldap_status_e; | |
59 | ||
7f9875bb | 60 | typedef struct mod_vhost_ldap_config_t { |
8196fae3 | 61 | mod_vhost_ldap_status_e enabled; /* Is vhost_ldap enabled? */ |
7f9875bb OS |
62 | |
63 | /* These parameters are all derived from the VhostLDAPURL directive */ | |
64 | char *url; /* String representation of LDAP URL */ | |
65 | ||
66 | char *host; /* Name of the LDAP server (or space separated list) */ | |
67 | int port; /* Port of the LDAP server */ | |
68 | char *basedn; /* Base DN to do all searches from */ | |
69 | int scope; /* Scope of the search */ | |
70 | char *filter; /* Filter to further limit the search */ | |
71 | deref_options deref; /* how to handle alias dereferening */ | |
72 | ||
73 | char *binddn; /* DN to bind to server (can be NULL) */ | |
74 | char *bindpw; /* Password to bind to server (can be NULL) */ | |
75 | ||
8196fae3 | 76 | int have_deref; /* Set if we have found an Deref option */ |
7f9875bb OS |
77 | int have_ldap_url; /* Set if we have found an LDAP url */ |
78 | ||
79 | int secure; /* True if SSL connections are requested */ | |
6056cddb OS |
80 | |
81 | char *fallback; /* Fallback virtual host */ | |
82 | ||
7f9875bb OS |
83 | } mod_vhost_ldap_config_t; |
84 | ||
85 | typedef struct mod_vhost_ldap_request_t { | |
86 | char *dn; /* The saved dn from a successful search */ | |
87 | char *name; /* ServerName */ | |
88 | char *admin; /* ServerAdmin */ | |
89 | char *docroot; /* DocumentRoot */ | |
9ee2dda1 | 90 | char *cgiroot; /* ScriptAlias */ |
7f9875bb OS |
91 | char *uid; /* Suexec Uid */ |
92 | char *gid; /* Suexec Gid */ | |
93 | } mod_vhost_ldap_request_t; | |
94 | ||
95 | char *attributes[] = | |
6f705808 | 96 | { "apacheServerName", "apacheDocumentRoot", "apacheScriptAlias", "apacheSuexecUid", "apacheSuexecGid", "apacheServerAdmin", 0 }; |
7f9875bb | 97 | |
9965ff97 AK |
98 | static int total_modules; |
99 | ||
8503d00b | 100 | #if (APR_MAJOR_VERSION >= 1) |
3b8a47e0 OS |
101 | static APR_OPTIONAL_FN_TYPE(uldap_connection_close) *util_ldap_connection_close; |
102 | static APR_OPTIONAL_FN_TYPE(uldap_connection_find) *util_ldap_connection_find; | |
103 | static APR_OPTIONAL_FN_TYPE(uldap_cache_comparedn) *util_ldap_cache_comparedn; | |
104 | static APR_OPTIONAL_FN_TYPE(uldap_cache_compare) *util_ldap_cache_compare; | |
105 | static APR_OPTIONAL_FN_TYPE(uldap_cache_checkuserid) *util_ldap_cache_checkuserid; | |
106 | static APR_OPTIONAL_FN_TYPE(uldap_cache_getuserdn) *util_ldap_cache_getuserdn; | |
107 | static APR_OPTIONAL_FN_TYPE(uldap_ssl_supported) *util_ldap_ssl_supported; | |
108 | ||
109 | static void ImportULDAPOptFn(void) | |
110 | { | |
111 | util_ldap_connection_close = APR_RETRIEVE_OPTIONAL_FN(uldap_connection_close); | |
112 | util_ldap_connection_find = APR_RETRIEVE_OPTIONAL_FN(uldap_connection_find); | |
113 | util_ldap_cache_comparedn = APR_RETRIEVE_OPTIONAL_FN(uldap_cache_comparedn); | |
114 | util_ldap_cache_compare = APR_RETRIEVE_OPTIONAL_FN(uldap_cache_compare); | |
115 | util_ldap_cache_checkuserid = APR_RETRIEVE_OPTIONAL_FN(uldap_cache_checkuserid); | |
116 | util_ldap_cache_getuserdn = APR_RETRIEVE_OPTIONAL_FN(uldap_cache_getuserdn); | |
117 | util_ldap_ssl_supported = APR_RETRIEVE_OPTIONAL_FN(uldap_ssl_supported); | |
118 | } | |
119 | #endif | |
120 | ||
7f9875bb OS |
121 | static int mod_vhost_ldap_post_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s) |
122 | { | |
9965ff97 AK |
123 | module **m; |
124 | ||
125 | /* Stolen from modules/generators/mod_cgid.c */ | |
126 | total_modules = 0; | |
127 | for (m = ap_preloaded_modules; *m != NULL; m++) | |
128 | total_modules++; | |
129 | ||
7f9875bb OS |
130 | /* make sure that mod_ldap (util_ldap) is loaded */ |
131 | if (ap_find_linked_module("util_ldap.c") == NULL) { | |
132 | ap_log_error(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, s, | |
133 | "Module mod_ldap missing. Mod_ldap (aka. util_ldap) " | |
134 | "must be loaded in order for mod_vhost_ldap to function properly"); | |
135 | return HTTP_INTERNAL_SERVER_ERROR; | |
136 | ||
137 | } | |
138 | ||
9ee2dda1 | 139 | ap_add_version_component(p, MOD_VHOST_LDAP_VERSION); |
7f9875bb OS |
140 | |
141 | return OK; | |
142 | } | |
143 | ||
144 | static void * | |
145 | mod_vhost_ldap_create_server_config (apr_pool_t *p, server_rec *s) | |
146 | { | |
8196fae3 | 147 | mod_vhost_ldap_config_t *conf = |
7f9875bb OS |
148 | (mod_vhost_ldap_config_t *)apr_pcalloc(p, sizeof (mod_vhost_ldap_config_t)); |
149 | ||
8196fae3 OS |
150 | conf->enabled = MVL_UNSET; |
151 | conf->have_ldap_url = 0; | |
152 | conf->have_deref = 0; | |
153 | conf->binddn = NULL; | |
154 | conf->bindpw = NULL; | |
155 | conf->deref = always; | |
6056cddb | 156 | conf->fallback = NULL; |
8196fae3 OS |
157 | |
158 | return conf; | |
159 | } | |
160 | ||
161 | static void * | |
162 | mod_vhost_ldap_merge_server_config(apr_pool_t *p, void *parentv, void *childv) | |
163 | { | |
164 | mod_vhost_ldap_config_t *parent = (mod_vhost_ldap_config_t *) parentv; | |
165 | mod_vhost_ldap_config_t *child = (mod_vhost_ldap_config_t *) childv; | |
166 | mod_vhost_ldap_config_t *conf = | |
167 | (mod_vhost_ldap_config_t *)apr_pcalloc(p, sizeof(mod_vhost_ldap_config_t)); | |
7f9875bb | 168 | |
8196fae3 OS |
169 | if (child->enabled == MVL_UNSET) { |
170 | conf->enabled = parent->enabled; | |
171 | } else { | |
172 | conf->enabled = child->enabled; | |
173 | } | |
7f9875bb | 174 | |
8196fae3 OS |
175 | if (child->have_ldap_url) { |
176 | conf->have_ldap_url = child->have_ldap_url; | |
177 | conf->url = child->url; | |
178 | conf->host = child->host; | |
179 | conf->port = child->port; | |
180 | conf->basedn = child->basedn; | |
181 | conf->scope = child->scope; | |
182 | conf->filter = child->filter; | |
183 | conf->secure = child->secure; | |
184 | } else { | |
185 | conf->have_ldap_url = parent->have_ldap_url; | |
186 | conf->url = parent->url; | |
187 | conf->host = parent->host; | |
188 | conf->port = parent->port; | |
189 | conf->basedn = parent->basedn; | |
190 | conf->scope = parent->scope; | |
191 | conf->filter = parent->filter; | |
192 | conf->secure = parent->secure; | |
193 | } | |
194 | if (child->have_deref) { | |
195 | conf->have_deref = child->have_deref; | |
196 | conf->deref = child->deref; | |
197 | } else { | |
198 | conf->have_deref = parent->have_deref; | |
199 | conf->deref = parent->deref; | |
200 | } | |
201 | ||
202 | conf->binddn = (child->binddn ? child->binddn : parent->binddn); | |
203 | conf->bindpw = (child->bindpw ? child->bindpw : parent->bindpw); | |
204 | ||
6056cddb OS |
205 | conf->fallback = (child->fallback ? child->fallback : parent->fallback); |
206 | ||
8196fae3 | 207 | return conf; |
7f9875bb OS |
208 | } |
209 | ||
210 | /* | |
211 | * Use the ldap url parsing routines to break up the ldap url into | |
212 | * host and port. | |
213 | */ | |
214 | static const char *mod_vhost_ldap_parse_url(cmd_parms *cmd, | |
215 | void *dummy, | |
216 | const char *url) | |
217 | { | |
218 | int result; | |
219 | apr_ldap_url_desc_t *urld; | |
8503d00b | 220 | #if (APR_MAJOR_VERSION >= 1) |
3b8a47e0 | 221 | apr_ldap_err_t *result_err; |
8503d00b | 222 | #endif |
7f9875bb | 223 | |
8196fae3 | 224 | mod_vhost_ldap_config_t *conf = |
7f9875bb OS |
225 | (mod_vhost_ldap_config_t *)ap_get_module_config(cmd->server->module_config, |
226 | &vhost_ldap_module); | |
227 | ||
228 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
229 | cmd->server, "[mod_vhost_ldap.c] url parse: `%s'", | |
230 | url); | |
8503d00b OS |
231 | |
232 | #if (APR_MAJOR_VERSION >= 1) /* for apache >= 2.2 */ | |
3b8a47e0 OS |
233 | result = apr_ldap_url_parse(cmd->pool, url, &(urld), &(result_err)); |
234 | if (result != LDAP_SUCCESS) { | |
235 | return result_err->reason; | |
236 | } | |
237 | #else | |
7f9875bb OS |
238 | result = apr_ldap_url_parse(url, &(urld)); |
239 | if (result != LDAP_SUCCESS) { | |
240 | switch (result) { | |
3b8a47e0 OS |
241 | case LDAP_URL_ERR_NOTLDAP: |
242 | return "LDAP URL does not begin with ldap://"; | |
243 | case LDAP_URL_ERR_NODN: | |
244 | return "LDAP URL does not have a DN"; | |
245 | case LDAP_URL_ERR_BADSCOPE: | |
246 | return "LDAP URL has an invalid scope"; | |
247 | case LDAP_URL_ERR_MEM: | |
248 | return "Out of memory parsing LDAP URL"; | |
249 | default: | |
250 | return "Could not parse LDAP URL"; | |
7f9875bb OS |
251 | } |
252 | } | |
3b8a47e0 | 253 | #endif |
8196fae3 | 254 | conf->url = apr_pstrdup(cmd->pool, url); |
7f9875bb OS |
255 | |
256 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
257 | cmd->server, "[mod_vhost_ldap.c] url parse: Host: %s", urld->lud_host); | |
258 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
259 | cmd->server, "[mod_vhost_ldap.c] url parse: Port: %d", urld->lud_port); | |
260 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
261 | cmd->server, "[mod_vhost_ldap.c] url parse: DN: %s", urld->lud_dn); | |
262 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
263 | cmd->server, "[mod_vhost_ldap.c] url parse: attrib: %s", urld->lud_attrs? urld->lud_attrs[0] : "(null)"); | |
264 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
265 | cmd->server, "[mod_vhost_ldap.c] url parse: scope: %s", | |
266 | (urld->lud_scope == LDAP_SCOPE_SUBTREE? "subtree" : | |
267 | urld->lud_scope == LDAP_SCOPE_BASE? "base" : | |
268 | urld->lud_scope == LDAP_SCOPE_ONELEVEL? "onelevel" : "unknown")); | |
269 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, | |
270 | cmd->server, "[mod_vhost_ldap.c] url parse: filter: %s", urld->lud_filter); | |
271 | ||
272 | /* Set all the values, or at least some sane defaults */ | |
8196fae3 OS |
273 | if (conf->host) { |
274 | char *p = apr_palloc(cmd->pool, strlen(conf->host) + strlen(urld->lud_host) + 2); | |
7f9875bb OS |
275 | strcpy(p, urld->lud_host); |
276 | strcat(p, " "); | |
8196fae3 OS |
277 | strcat(p, conf->host); |
278 | conf->host = p; | |
7f9875bb OS |
279 | } |
280 | else { | |
8196fae3 | 281 | conf->host = urld->lud_host? apr_pstrdup(cmd->pool, urld->lud_host) : "localhost"; |
7f9875bb | 282 | } |
8196fae3 | 283 | conf->basedn = urld->lud_dn? apr_pstrdup(cmd->pool, urld->lud_dn) : ""; |
7f9875bb | 284 | |
8196fae3 | 285 | conf->scope = urld->lud_scope == LDAP_SCOPE_ONELEVEL ? |
7f9875bb OS |
286 | LDAP_SCOPE_ONELEVEL : LDAP_SCOPE_SUBTREE; |
287 | ||
288 | if (urld->lud_filter) { | |
289 | if (urld->lud_filter[0] == '(') { | |
290 | /* | |
291 | * Get rid of the surrounding parens; later on when generating the | |
292 | * filter, they'll be put back. | |
293 | */ | |
8196fae3 OS |
294 | conf->filter = apr_pstrdup(cmd->pool, urld->lud_filter+1); |
295 | conf->filter[strlen(conf->filter)-1] = '\0'; | |
7f9875bb OS |
296 | } |
297 | else { | |
8196fae3 | 298 | conf->filter = apr_pstrdup(cmd->pool, urld->lud_filter); |
7f9875bb OS |
299 | } |
300 | } | |
301 | else { | |
8196fae3 | 302 | conf->filter = "objectClass=apacheConfig"; |
7f9875bb OS |
303 | } |
304 | ||
305 | /* "ldaps" indicates secure ldap connections desired | |
306 | */ | |
307 | if (strncasecmp(url, "ldaps", 5) == 0) | |
308 | { | |
8196fae3 OS |
309 | conf->secure = 1; |
310 | conf->port = urld->lud_port? urld->lud_port : LDAPS_PORT; | |
7f9875bb OS |
311 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, cmd->server, |
312 | "LDAP: vhost_ldap using SSL connections"); | |
313 | } | |
314 | else | |
315 | { | |
8196fae3 OS |
316 | conf->secure = 0; |
317 | conf->port = urld->lud_port? urld->lud_port : LDAP_PORT; | |
fb323462 | 318 | ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, cmd->server, |
7f9875bb OS |
319 | "LDAP: vhost_ldap not using SSL connections"); |
320 | } | |
321 | ||
8196fae3 | 322 | conf->have_ldap_url = 1; |
8503d00b | 323 | #if (APR_MAJOR_VERSION < 1) /* free only required for older apr */ |
7f9875bb | 324 | apr_ldap_free_urldesc(urld); |
3b8a47e0 | 325 | #endif |
7f9875bb OS |
326 | return NULL; |
327 | } | |
328 | ||
329 | static const char *mod_vhost_ldap_set_enabled(cmd_parms *cmd, void *dummy, int enabled) | |
330 | { | |
8196fae3 | 331 | mod_vhost_ldap_config_t *conf = |
7f9875bb | 332 | (mod_vhost_ldap_config_t *)ap_get_module_config(cmd->server->module_config, |
6056cddb | 333 | &vhost_ldap_module); |
7f9875bb | 334 | |
8196fae3 OS |
335 | conf->enabled = (enabled) ? MVL_ENABLED : MVL_DISABLED; |
336 | ||
7f9875bb OS |
337 | return NULL; |
338 | } | |
339 | ||
340 | static const char *mod_vhost_ldap_set_binddn(cmd_parms *cmd, void *dummy, const char *binddn) | |
341 | { | |
8196fae3 | 342 | mod_vhost_ldap_config_t *conf = |
7f9875bb | 343 | (mod_vhost_ldap_config_t *)ap_get_module_config(cmd->server->module_config, |
6056cddb | 344 | &vhost_ldap_module); |
7f9875bb | 345 | |
8196fae3 | 346 | conf->binddn = apr_pstrdup(cmd->pool, binddn); |
7f9875bb OS |
347 | return NULL; |
348 | } | |
349 | ||
350 | static const char *mod_vhost_ldap_set_bindpw(cmd_parms *cmd, void *dummy, const char *bindpw) | |
351 | { | |
8196fae3 | 352 | mod_vhost_ldap_config_t *conf = |
7f9875bb | 353 | (mod_vhost_ldap_config_t *)ap_get_module_config(cmd->server->module_config, |
6056cddb | 354 | &vhost_ldap_module); |
7f9875bb | 355 | |
8196fae3 | 356 | conf->bindpw = apr_pstrdup(cmd->pool, bindpw); |
7f9875bb OS |
357 | return NULL; |
358 | } | |
359 | ||
360 | static const char *mod_vhost_ldap_set_deref(cmd_parms *cmd, void *dummy, const char *deref) | |
361 | { | |
8196fae3 | 362 | mod_vhost_ldap_config_t *conf = |
7f9875bb OS |
363 | (mod_vhost_ldap_config_t *)ap_get_module_config (cmd->server->module_config, |
364 | &vhost_ldap_module); | |
365 | ||
366 | if (strcmp(deref, "never") == 0 || strcasecmp(deref, "off") == 0) { | |
8196fae3 OS |
367 | conf->deref = never; |
368 | conf->have_deref = 1; | |
7f9875bb OS |
369 | } |
370 | else if (strcmp(deref, "searching") == 0) { | |
8196fae3 OS |
371 | conf->deref = searching; |
372 | conf->have_deref = 1; | |
7f9875bb OS |
373 | } |
374 | else if (strcmp(deref, "finding") == 0) { | |
8196fae3 OS |
375 | conf->deref = finding; |
376 | conf->have_deref = 1; | |
7f9875bb OS |
377 | } |
378 | else if (strcmp(deref, "always") == 0 || strcasecmp(deref, "on") == 0) { | |
8196fae3 OS |
379 | conf->deref = always; |
380 | conf->have_deref = 1; | |
7f9875bb OS |
381 | } |
382 | else { | |
383 | return "Unrecognized value for VhostLDAPAliasDereference directive"; | |
384 | } | |
385 | return NULL; | |
386 | } | |
387 | ||
6056cddb OS |
388 | static const char *mod_vhost_ldap_set_fallback(cmd_parms *cmd, void *dummy, const char *fallback) |
389 | { | |
390 | mod_vhost_ldap_config_t *conf = | |
391 | (mod_vhost_ldap_config_t *)ap_get_module_config(cmd->server->module_config, | |
392 | &vhost_ldap_module); | |
393 | ||
394 | conf->fallback = apr_pstrdup(cmd->pool, fallback); | |
395 | return NULL; | |
396 | } | |
397 | ||
7f9875bb OS |
398 | command_rec mod_vhost_ldap_cmds[] = { |
399 | AP_INIT_TAKE1("VhostLDAPURL", mod_vhost_ldap_parse_url, NULL, RSRC_CONF, | |
a940f969 | 400 | "URL to define LDAP connection. This should be an RFC 2255 compliant\n" |
7f9875bb OS |
401 | "URL of the form ldap://host[:port]/basedn[?attrib[?scope[?filter]]].\n" |
402 | "<ul>\n" | |
403 | "<li>Host is the name of the LDAP server. Use a space separated list of hosts \n" | |
404 | "to specify redundant servers.\n" | |
405 | "<li>Port is optional, and specifies the port to connect to.\n" | |
406 | "<li>basedn specifies the base DN to start searches from\n" | |
407 | "</ul>\n"), | |
408 | ||
409 | AP_INIT_TAKE1 ("VhostLDAPBindDN", mod_vhost_ldap_set_binddn, NULL, RSRC_CONF, | |
410 | "DN to use to bind to LDAP server. If not provided, will do an anonymous bind."), | |
411 | ||
412 | AP_INIT_TAKE1("VhostLDAPBindPassword", mod_vhost_ldap_set_bindpw, NULL, RSRC_CONF, | |
413 | "Password to use to bind to LDAP server. If not provided, will do an anonymous bind."), | |
414 | ||
415 | AP_INIT_FLAG("VhostLDAPEnabled", mod_vhost_ldap_set_enabled, NULL, RSRC_CONF, | |
416 | "Set to off to disable vhost_ldap, even if it's been enabled in a higher tree"), | |
417 | ||
418 | AP_INIT_TAKE1("VhostLDAPDereferenceAliases", mod_vhost_ldap_set_deref, NULL, RSRC_CONF, | |
a940f969 | 419 | "Determines how aliases are handled during a search. Can be one of the" |
7f9875bb OS |
420 | "values \"never\", \"searching\", \"finding\", or \"always\". " |
421 | "Defaults to always."), | |
422 | ||
6056cddb OS |
423 | AP_INIT_TAKE1("VhostLDAPFallback", mod_vhost_ldap_set_fallback, NULL, RSRC_CONF, |
424 | "Set default virtual host which will be used when requested hostname" | |
425 | "is not found in LDAP database. This option can be used to display" | |
426 | "\"virtual host not found\" type of page."), | |
427 | ||
7f9875bb OS |
428 | {NULL} |
429 | }; | |
430 | ||
431 | #define FILTER_LENGTH MAX_STRING_LEN | |
b5043ccb | 432 | static int mod_vhost_ldap_translate_name(request_rec *r) |
7f9875bb | 433 | { |
b5043ccb | 434 | mod_vhost_ldap_request_t *reqc; |
7f9875bb OS |
435 | apr_table_t *e; |
436 | int failures = 0; | |
437 | const char **vals = NULL; | |
438 | char filtbuf[FILTER_LENGTH]; | |
8196fae3 | 439 | mod_vhost_ldap_config_t *conf = |
7f9875bb | 440 | (mod_vhost_ldap_config_t *)ap_get_module_config(r->server->module_config, &vhost_ldap_module); |
9ee2dda1 OS |
441 | core_server_config * core = |
442 | (core_server_config *) ap_get_module_config(r->server->module_config, &core_module); | |
7f9875bb OS |
443 | util_ldap_connection_t *ldc = NULL; |
444 | int result = 0; | |
445 | const char *dn = NULL; | |
446 | char *cgi; | |
6056cddb OS |
447 | const char *hostname = NULL; |
448 | int is_fallback = 0; | |
7f9875bb | 449 | |
b5043ccb | 450 | reqc = |
7f9875bb | 451 | (mod_vhost_ldap_request_t *)apr_pcalloc(r->pool, sizeof(mod_vhost_ldap_request_t)); |
8503d00b | 452 | memset(reqc, 0, sizeof(mod_vhost_ldap_request_t)); |
b5043ccb OS |
453 | |
454 | ap_set_module_config(r->request_config, &vhost_ldap_module, reqc); | |
7f9875bb | 455 | |
8196fae3 OS |
456 | // mod_vhost_ldap is disabled or we don't have LDAP Url |
457 | if ((conf->enabled != MVL_ENABLED)||(!conf->have_ldap_url)) { | |
7f9875bb OS |
458 | return DECLINED; |
459 | } | |
460 | ||
461 | start_over: | |
462 | ||
8196fae3 OS |
463 | if (conf->host) { |
464 | ldc = util_ldap_connection_find(r, conf->host, conf->port, | |
465 | conf->binddn, conf->bindpw, conf->deref, | |
466 | conf->secure); | |
7f9875bb OS |
467 | } |
468 | else { | |
469 | ap_log_rerror(APLOG_MARK, APLOG_WARNING|APLOG_NOERRNO, 0, r, | |
fb323462 | 470 | "[mod_vhost_ldap.c] translate: no conf->host - weird...?"); |
7f9875bb OS |
471 | return DECLINED; |
472 | } | |
473 | ||
6056cddb | 474 | hostname = r->hostname; |
cb70a058 AK |
475 | if (hostname == NULL || hostname[0] == '\0') |
476 | goto null; | |
6056cddb OS |
477 | |
478 | fallback: | |
479 | ||
fb323462 | 480 | ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r, |
6f705808 | 481 | "[mod_vhost_ldap.c]: translating %s", r->uri); |
7f9875bb | 482 | |
83c0f57d AK |
483 | struct berval hostnamebv, shostnamebv; |
484 | ber_str2bv(hostname, 0, 0, &hostnamebv); | |
485 | if (ldap_bv2escaped_filter_value(&hostnamebv, &shostnamebv) != 0) | |
486 | goto null; | |
487 | apr_snprintf(filtbuf, FILTER_LENGTH, "(&(%s)(|(apacheServerName=%s)(apacheServerAlias=%s)))", conf->filter, shostnamebv.bv_val, shostnamebv.bv_val); | |
488 | ber_memfree(shostnamebv.bv_val); | |
7f9875bb | 489 | |
8196fae3 | 490 | result = util_ldap_cache_getuserdn(r, ldc, conf->url, conf->basedn, conf->scope, |
7f9875bb OS |
491 | attributes, filtbuf, &dn, &vals); |
492 | ||
493 | util_ldap_connection_close(ldc); | |
494 | ||
495 | /* sanity check - if server is down, retry it up to 5 times */ | |
496 | if (result == LDAP_SERVER_DOWN) { | |
497 | if (failures++ <= 5) { | |
498 | goto start_over; | |
499 | } | |
500 | } | |
501 | ||
6056cddb | 502 | if ((result == LDAP_NO_SUCH_OBJECT)) { |
9dbcfa0d GT |
503 | if (strcmp(hostname, "*") != 0) { |
504 | if (strncmp(hostname, "*.", 2) == 0) | |
505 | hostname += 2; | |
506 | hostname += strcspn(hostname, "."); | |
507 | hostname = apr_pstrcat(r->pool, "*", hostname, NULL); | |
508 | ap_log_rerror(APLOG_MARK, APLOG_NOTICE|APLOG_NOERRNO, 0, r, | |
509 | "[mod_vhost_ldap.c] translate: " | |
510 | "virtual host not found, trying wildcard %s", | |
511 | hostname); | |
512 | goto fallback; | |
513 | } | |
514 | ||
cb70a058 | 515 | null: |
6056cddb OS |
516 | if (conf->fallback && (is_fallback++ <= 0)) { |
517 | ap_log_rerror(APLOG_MARK, APLOG_NOTICE|APLOG_NOERRNO, 0, r, | |
518 | "[mod_vhost_ldap.c] translate: " | |
519 | "virtual host %s not found, trying fallback %s", | |
520 | hostname, conf->fallback); | |
521 | hostname = conf->fallback; | |
522 | goto fallback; | |
523 | } | |
524 | ||
525 | ap_log_rerror(APLOG_MARK, APLOG_WARNING|APLOG_NOERRNO, 0, r, | |
526 | "[mod_vhost_ldap.c] translate: " | |
527 | "virtual host %s not found", | |
528 | hostname); | |
529 | ||
530 | return DECLINED; | |
531 | } | |
532 | ||
7f9875bb OS |
533 | /* handle bind failure */ |
534 | if (result != LDAP_SUCCESS) { | |
cbd5c5f5 | 535 | ap_log_rerror(APLOG_MARK, APLOG_WARNING|APLOG_NOERRNO, 0, r, |
7f9875bb | 536 | "[mod_vhost_ldap.c] translate: " |
6056cddb OS |
537 | "translate failed; virtual host %s; URI %s [%s]", |
538 | hostname, r->uri, ldap_err2string(result)); | |
7f9875bb OS |
539 | return DECLINED; |
540 | } | |
541 | ||
542 | /* mark the user and DN */ | |
b5043ccb | 543 | reqc->dn = apr_pstrdup(r->pool, dn); |
7f9875bb OS |
544 | |
545 | /* Optimize */ | |
546 | if (vals) { | |
547 | int i = 0; | |
548 | while (attributes[i]) { | |
549 | ||
550 | if (strcasecmp (attributes[i], "apacheServerName") == 0) { | |
b5043ccb | 551 | reqc->name = apr_pstrdup (r->pool, vals[i]); |
7f9875bb OS |
552 | } |
553 | else if (strcasecmp (attributes[i], "apacheServerAdmin") == 0) { | |
b5043ccb | 554 | reqc->admin = apr_pstrdup (r->pool, vals[i]); |
7f9875bb OS |
555 | } |
556 | else if (strcasecmp (attributes[i], "apacheDocumentRoot") == 0) { | |
b5043ccb | 557 | reqc->docroot = apr_pstrdup (r->pool, vals[i]); |
7f9875bb OS |
558 | } |
559 | else if (strcasecmp (attributes[i], "apacheScriptAlias") == 0) { | |
b5043ccb | 560 | reqc->cgiroot = apr_pstrdup (r->pool, vals[i]); |
7f9875bb OS |
561 | } |
562 | else if (strcasecmp (attributes[i], "apacheSuexecUid") == 0) { | |
b5043ccb | 563 | reqc->uid = apr_pstrdup(r->pool, vals[i]); |
7f9875bb OS |
564 | } |
565 | else if (strcasecmp (attributes[i], "apacheSuexecGid") == 0) { | |
b5043ccb | 566 | reqc->gid = apr_pstrdup(r->pool, vals[i]); |
7f9875bb OS |
567 | } |
568 | i++; | |
569 | } | |
570 | } | |
571 | ||
6f705808 OS |
572 | ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r, |
573 | "[mod_vhost_ldap.c]: loaded from ldap: " | |
574 | "apacheServerName: %s, " | |
575 | "apacheServerAdmin: %s, " | |
576 | "apacheDocumentRoot: %s, " | |
577 | "apacheScriptAlias: %s, " | |
578 | "apacheSuexecUid: %s, " | |
b5043ccb OS |
579 | "apacheSuexecGid: %s", |
580 | reqc->name, reqc->admin, reqc->docroot, reqc->cgiroot, reqc->uid, reqc->gid); | |
6f705808 | 581 | |
b5043ccb | 582 | if ((reqc->name == NULL)||(reqc->docroot == NULL)) { |
7f9875bb OS |
583 | ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, r, |
584 | "[mod_vhost_ldap.c] translate: " | |
585 | "translate failed; ServerName or DocumentRoot not defined"); | |
586 | return DECLINED; | |
587 | } | |
588 | ||
589 | cgi = NULL; | |
590 | ||
889991ea | 591 | #if 0 |
b5043ccb | 592 | if (reqc->cgiroot) { |
6f705808 OS |
593 | cgi = strstr(r->uri, "cgi-bin/"); |
594 | if (cgi && (cgi != r->uri + strspn(r->uri, "/"))) { | |
7f9875bb OS |
595 | cgi = NULL; |
596 | } | |
9ee2dda1 | 597 | } |
9ee2dda1 | 598 | if (cgi) { |
b5043ccb | 599 | r->filename = apr_pstrcat (r->pool, reqc->cgiroot, cgi + strlen("cgi-bin"), NULL); |
9ee2dda1 OS |
600 | r->handler = "cgi-script"; |
601 | apr_table_setn(r->notes, "alias-forced-type", r->handler); | |
889991ea GT |
602 | #endif |
603 | /* This is a quick, dirty hack. I should be shot for taking 6.170 | |
604 | * this term and being willing to write a quick, dirty hack. */ | |
605 | ||
606 | if (strncmp(r->uri, "/~", 2) == 0) { | |
607 | char *username; | |
608 | uid_t uid = (uid_t)atoll(reqc->uid); | |
609 | if (apr_uid_name_get(&username, uid, r->pool) != APR_SUCCESS) { | |
610 | ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, r, | |
611 | "could not get username for uid %d", uid); | |
612 | return DECLINED; | |
613 | } | |
614 | if (strncmp(r->uri + 2, username, strlen(username)) == 0 && | |
615 | (r->uri[2 + strlen(username)] == '/' || | |
616 | r->uri[2 + strlen(username)] == '\0')) { | |
617 | char *homedir; | |
618 | if (apr_uid_homepath_get(&homedir, username, r->pool) != APR_SUCCESS) { | |
619 | ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, r, | |
620 | "could not get home directory for user %s", username); | |
621 | return DECLINED; | |
622 | } | |
623 | r->filename = apr_pstrcat(r->pool, homedir, "/", USERDIR, r->uri + 2 + strlen(username), NULL); | |
624 | } | |
6f705808 | 625 | } else if (r->uri[0] == '/') { |
b5043ccb | 626 | r->filename = apr_pstrcat (r->pool, reqc->docroot, r->uri, NULL); |
9ee2dda1 | 627 | } else { |
6f705808 | 628 | return DECLINED; |
7f9875bb OS |
629 | } |
630 | ||
9965ff97 AK |
631 | if ((r->server = apr_pmemdup(r->pool, r->server, |
632 | sizeof(*r->server))) == NULL) | |
633 | return HTTP_INTERNAL_SERVER_ERROR; | |
634 | ||
635 | r->server->server_hostname = reqc->name; | |
7f9875bb | 636 | |
b5043ccb | 637 | if (reqc->admin) { |
9965ff97 | 638 | r->server->server_admin = reqc->admin; |
7f9875bb OS |
639 | } |
640 | ||
641 | // set environment variables | |
9965ff97 | 642 | e = r->subprocess_env; |
b5043ccb | 643 | apr_table_addn (e, "SERVER_ROOT", reqc->docroot); |
7f9875bb | 644 | |
9965ff97 AK |
645 | if ((r->server->module_config = |
646 | apr_pmemdup(r->pool, r->server->module_config, | |
647 | sizeof(void *) * | |
648 | (total_modules + DYNAMIC_MODULE_LIMIT))) == NULL) | |
649 | return HTTP_INTERNAL_SERVER_ERROR; | |
650 | ||
651 | if ((core = apr_pmemdup(r->pool, core, sizeof(*core))) == NULL) | |
652 | return HTTP_INTERNAL_SERVER_ERROR; | |
653 | ap_set_module_config(r->server->module_config, &core_module, core); | |
654 | ||
655 | core->ap_document_root = reqc->docroot; | |
9ee2dda1 | 656 | |
7f9875bb OS |
657 | ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r, |
658 | "[mod_vhost_ldap.c]: translated to %s", r->filename); | |
659 | ||
660 | return OK; | |
661 | } | |
662 | ||
663 | #ifdef HAVE_UNIX_SUEXEC | |
664 | static ap_unix_identity_t *mod_vhost_ldap_get_suexec_id_doer(const request_rec * r) | |
665 | { | |
666 | ap_unix_identity_t *ugid = NULL; | |
8196fae3 | 667 | mod_vhost_ldap_config_t *conf = |
7f9875bb OS |
668 | (mod_vhost_ldap_config_t *)ap_get_module_config(r->server->module_config, |
669 | &vhost_ldap_module); | |
670 | mod_vhost_ldap_request_t *req = | |
671 | (mod_vhost_ldap_request_t *)ap_get_module_config(r->request_config, | |
672 | &vhost_ldap_module); | |
673 | ||
674 | uid_t uid = -1; | |
675 | gid_t gid = -1; | |
676 | ||
8196fae3 OS |
677 | // mod_vhost_ldap is disabled or we don't have LDAP Url |
678 | if ((conf->enabled != MVL_ENABLED)||(!conf->have_ldap_url)) { | |
7f9875bb OS |
679 | return NULL; |
680 | } | |
681 | ||
682 | if ((req == NULL)||(req->uid == NULL)||(req->gid == NULL)) { | |
683 | return NULL; | |
684 | } | |
685 | ||
686 | if ((ugid = apr_palloc(r->pool, sizeof(ap_unix_identity_t))) == NULL) { | |
687 | return NULL; | |
688 | } | |
689 | ||
690 | uid = (uid_t)atoll(req->uid); | |
691 | gid = (gid_t)atoll(req->gid); | |
692 | ||
eea38f6d | 693 | if ((uid < MIN_UID)||(gid < MIN_GID)) { |
7f9875bb OS |
694 | return NULL; |
695 | } | |
696 | ||
697 | ugid->uid = uid; | |
698 | ugid->gid = gid; | |
699 | ugid->userdir = 0; | |
700 | ||
701 | return ugid; | |
702 | } | |
703 | #endif | |
704 | ||
705 | static void | |
706 | mod_vhost_ldap_register_hooks (apr_pool_t * p) | |
707 | { | |
708 | ap_hook_post_config(mod_vhost_ldap_post_config, NULL, NULL, APR_HOOK_MIDDLE); | |
709 | ap_hook_translate_name(mod_vhost_ldap_translate_name, NULL, NULL, APR_HOOK_MIDDLE); | |
710 | #ifdef HAVE_UNIX_SUEXEC | |
711 | ap_hook_get_suexec_identity(mod_vhost_ldap_get_suexec_id_doer, NULL, NULL, APR_HOOK_MIDDLE); | |
712 | #endif | |
8503d00b | 713 | #if (APR_MAJOR_VERSION >= 1) |
3b8a47e0 OS |
714 | ap_hook_optional_fn_retrieve(ImportULDAPOptFn,NULL,NULL,APR_HOOK_MIDDLE); |
715 | #endif | |
7f9875bb OS |
716 | } |
717 | ||
718 | module AP_MODULE_DECLARE_DATA vhost_ldap_module = { | |
719 | STANDARD20_MODULE_STUFF, | |
720 | NULL, | |
721 | NULL, | |
722 | mod_vhost_ldap_create_server_config, | |
8196fae3 | 723 | mod_vhost_ldap_merge_server_config, |
7f9875bb OS |
724 | mod_vhost_ldap_cmds, |
725 | mod_vhost_ldap_register_hooks, | |
726 | }; |