4 Copyright (C) 2014 Simo Sorce <simo@redhat.com>
6 Permission is hereby granted, free of charge, to any person obtaining a
7 copy of this software and associated documentation files (the "Software"),
8 to deal in the Software without restriction, including without limitation
9 the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 and/or sell copies of the Software, and to permit persons to whom the
11 Software is furnished to do so, subject to the following conditions:
13 The above copyright notice and this permission notice shall be included in
14 all copies or substantial portions of the Software.
16 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 DEALINGS IN THE SOFTWARE.
25 #include "mod_auth_gssapi.h"
27 #define MOD_AUTH_GSSAPI_VERSION PACKAGE_NAME "/" PACKAGE_VERSION
29 module AP_MODULE_DECLARE_DATA auth_gssapi_module;
31 APLOG_USE_MODULE(auth_gssapi);
33 static char *mag_status(request_rec *req, int type, uint32_t err)
35 uint32_t maj_ret, min_ret;
44 maj_ret = gss_display_status(&min_ret, err, type,
45 GSS_C_NO_OID, &msg_ctx, &text);
46 if (maj_ret != GSS_S_COMPLETE) {
52 msg_ret = apr_psprintf(req->pool, "%s, %*s",
53 msg_ret, len, (char *)text.value);
55 msg_ret = apr_psprintf(req->pool, "%*s", len, (char *)text.value);
57 gss_release_buffer(&min_ret, &text);
58 } while (msg_ctx != 0);
63 static char *mag_error(request_rec *req, const char *msg,
64 uint32_t maj, uint32_t min)
69 msg_maj = mag_status(req, GSS_C_GSS_CODE, maj);
70 msg_min = mag_status(req, GSS_C_MECH_CODE, min);
71 return apr_psprintf(req->pool, "%s: [%s (%s)]", msg, msg_maj, msg_min);
74 static APR_OPTIONAL_FN_TYPE(ssl_is_https) *mag_is_https = NULL;
76 static int mag_post_config(apr_pool_t *cfgpool, apr_pool_t *log,
77 apr_pool_t *temp, server_rec *s)
79 /* FIXME: create mutex to deal with connections and contexts ? */
80 mag_is_https = APR_RETRIEVE_OPTIONAL_FN(ssl_is_https);
81 mag_post_config_session();
82 ap_add_version_component(cfgpool, MOD_AUTH_GSSAPI_VERSION);
87 static int mag_pre_connection(conn_rec *c, void *csd)
91 mc = apr_pcalloc(c->pool, sizeof(struct mag_conn));
94 ap_set_module_config(c->conn_config, &auth_gssapi_module, (void*)mc);
98 static apr_status_t mag_conn_destroy(void *ptr)
100 struct mag_conn *mc = (struct mag_conn *)ptr;
104 (void)gss_delete_sec_context(&min, &mc->ctx, GSS_C_NO_BUFFER);
105 mc->established = false;
110 static bool mag_conn_is_https(conn_rec *c)
113 if (mag_is_https(c)) return true;
119 static char *escape(apr_pool_t *pool, const char *name,
120 char find, const char *replace)
122 char *escaped = NULL;
127 namecopy = apr_pstrdup(pool, name);
129 p = strchr(namecopy, find);
130 if (!p) return namecopy;
135 /* terminate previous segment */
138 escaped = apr_pstrcat(pool, escaped, n, replace, NULL);
140 escaped = apr_pstrcat(pool, n, replace, NULL);
142 /* move to next segment */
146 /* append last segment if any */
148 escaped = apr_pstrcat(pool, escaped, n, NULL);
154 static void mag_store_deleg_creds(request_rec *req,
155 char *dir, char *clientname,
156 gss_cred_id_t delegated_cred,
159 gss_key_value_element_desc element;
160 gss_key_value_set_desc store;
165 /* We need to escape away '/', we can't have path separators in
166 * a ccache file name */
167 /* first double escape the esacping char (~) if any */
168 escaped = escape(req->pool, clientname, '~', "~~");
169 if (!escaped) return;
170 /* then escape away the separator (/) if any */
171 escaped = escape(req->pool, escaped, '/', "~");
172 if (!escaped) return;
174 value = apr_psprintf(req->pool, "FILE:%s/%s", dir, escaped);
176 element.key = "ccache";
177 element.value = value;
178 store.elements = &element;
181 maj = gss_store_cred_into(&min, delegated_cred, GSS_C_INITIATE,
182 GSS_C_NULL_OID, 1, 1, &store, NULL, NULL);
183 if (GSS_ERROR(maj)) {
184 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req, "%s",
185 mag_error(req, "failed to store delegated creds",
192 static int mag_auth(request_rec *req)
195 const char *auth_type;
196 struct mag_config *cfg;
197 const char *auth_header;
198 char *auth_header_type;
199 char *auth_header_value;
200 int ret = HTTP_UNAUTHORIZED;
201 gss_ctx_id_t ctx = GSS_C_NO_CONTEXT;
203 gss_buffer_desc input = GSS_C_EMPTY_BUFFER;
204 gss_buffer_desc output = GSS_C_EMPTY_BUFFER;
205 gss_buffer_desc name = GSS_C_EMPTY_BUFFER;
206 gss_name_t client = GSS_C_NO_NAME;
207 gss_cred_id_t user_cred = GSS_C_NO_CREDENTIAL;
208 gss_cred_id_t acquired_cred = GSS_C_NO_CREDENTIAL;
209 gss_cred_id_t server_cred = GSS_C_NO_CREDENTIAL;
210 gss_cred_id_t delegated_cred = GSS_C_NO_CREDENTIAL;
211 gss_cred_usage_t cred_usage = GSS_C_ACCEPT;
218 gss_OID mech_type = GSS_C_NO_OID;
219 gss_buffer_desc lname = GSS_C_EMPTY_BUFFER;
220 struct mag_conn *mc = NULL;
221 bool is_basic = false;
222 gss_ctx_id_t user_ctx = GSS_C_NO_CONTEXT;
223 gss_name_t server = GSS_C_NO_NAME;
224 #ifdef HAVE_GSS_KRB5_CCACHE_NAME
225 const char *user_ccache = NULL;
226 const char *orig_ccache = NULL;
228 uint32_t init_flags = 0;
231 type = ap_auth_type(req);
232 if ((type == NULL) || (strcasecmp(type, "GSSAPI") != 0)) {
236 cfg = ap_get_module_config(req->per_dir_config, &auth_gssapi_module);
238 /* implicit auth for subrequests if main auth already happened */
239 if (!ap_is_initial_req(req)) {
240 type = ap_auth_type(req->main);
241 if ((type != NULL) && (strcasecmp(type, "GSSAPI") == 0)) {
242 /* warn if the subrequest location and the main request
243 * location have different configs */
244 if (cfg != ap_get_module_config(req->main->per_dir_config,
245 &auth_gssapi_module)) {
246 ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0,
247 req, "Subrequest authentication bypass on "
248 "location with different configuration!");
250 if (req->main->user) {
251 req->user = apr_pstrdup(req->pool, req->main->user);
254 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req,
255 "The main request is tasked to establish the "
256 "security context, can't proceed!");
257 return HTTP_UNAUTHORIZED;
260 ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, req,
261 "Subrequest GSSAPI auth with no auth on the main "
262 "request. This operation may fail if other "
263 "subrequests already established a context or the "
264 "mechanism requires multiple roundtrips.");
269 if (!mag_conn_is_https(req->connection)) {
270 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req,
271 "Not a TLS connection, refusing to authenticate!");
276 if (cfg->gss_conn_ctx) {
277 mc = (struct mag_conn *)ap_get_module_config(
278 req->connection->conn_config,
279 &auth_gssapi_module);
281 ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, req,
282 "Failed to retrieve connection context!");
287 /* if available, session always supersedes connection bound data */
288 if (cfg->use_sessions) {
289 mag_check_session(req, cfg, &mc);
293 /* register the context in the memory pool, so it can be freed
294 * when the connection/request is terminated */
295 apr_pool_userdata_set(mc, "mag_conn_ptr",
296 mag_conn_destroy, mc->parent);
298 if (mc->established) {
299 ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, req,
300 "Already established context found!");
301 apr_table_set(req->subprocess_env, "GSS_NAME", mc->gss_name);
302 apr_table_set(req->subprocess_env, "GSS_SESSION_EXPIRATION",
303 apr_psprintf(req->pool,
304 "%ld", (long)mc->expiration));
305 req->ap_auth_type = apr_pstrdup(req->pool, mc->auth_type);
306 req->user = apr_pstrdup(req->pool, mc->user_name);
315 auth_header = apr_table_get(req->headers_in, "Authorization");
316 if (!auth_header) goto done;
318 auth_header_type = ap_getword_white(req->pool, &auth_header);
319 if (!auth_header_type) goto done;
321 if (strcasecmp(auth_header_type, "Negotiate") == 0) {
322 auth_type = "Negotiate";
324 auth_header_value = ap_getword_white(req->pool, &auth_header);
325 if (!auth_header_value) goto done;
326 input.length = apr_base64_decode_len(auth_header_value) + 1;
327 input.value = apr_pcalloc(req->pool, input.length);
328 if (!input.value) goto done;
329 input.length = apr_base64_decode(input.value, auth_header_value);
330 } else if ((strcasecmp(auth_header_type, "Basic") == 0) &&
331 (cfg->use_basic_auth == true)) {
335 gss_buffer_desc ba_user;
336 gss_buffer_desc ba_pwd;
338 ba_pwd.value = ap_pbase64decode(req->pool, auth_header);
339 if (!ba_pwd.value) goto done;
340 ba_user.value = ap_getword_nulls_nc(req->pool,
341 (char **)&ba_pwd.value, ':');
342 if (!ba_user.value) goto done;
343 if (((char *)ba_user.value)[0] == '\0' ||
344 ((char *)ba_pwd.value)[0] == '\0') {
345 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req,
346 "Invalid empty user or password for Basic Auth");
349 ba_user.length = strlen(ba_user.value);
350 ba_pwd.length = strlen(ba_pwd.value);
351 maj = gss_import_name(&min, &ba_user, GSS_C_NT_USER_NAME, &client);
352 if (GSS_ERROR(maj)) {
353 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req,
355 mag_error(req, "gss_import_name() failed",
359 #ifdef HAVE_GSS_KRB5_CCACHE_NAME
360 /* Set a per-thread ccache in case we are using kerberos,
361 * it is not elegant but avoids interference between threads */
362 long long unsigned int rndname;
364 rs = apr_generate_random_bytes((unsigned char *)(&rndname),
365 sizeof(long long unsigned int));
366 if (rs != APR_SUCCESS) {
367 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req,
368 "Failed to generate random ccache name");
371 user_ccache = apr_psprintf(req->pool, "MEMORY:user_%qu", rndname);
372 maj = gss_krb5_ccache_name(&min, user_ccache, &orig_ccache);
373 if (GSS_ERROR(maj)) {
374 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req,
376 mag_error(req, "gss_krb5_ccache_name() "
377 "failed", maj, min));
381 maj = gss_acquire_cred_with_password(&min, client, &ba_pwd,
385 &user_cred, NULL, NULL);
386 if (GSS_ERROR(maj)) {
387 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req,
389 mag_error(req, "gss_acquire_cred_with_password() "
390 "failed", maj, min));
393 gss_release_name(&min, &client);
398 req->ap_auth_type = apr_pstrdup(req->pool, auth_type);
400 #ifdef HAVE_GSS_ACQUIRE_CRED_FROM
401 if (cfg->use_s4u2proxy) {
402 cred_usage = GSS_C_BOTH;
404 if (cfg->cred_store) {
405 maj = gss_acquire_cred_from(&min, GSS_C_NO_NAME, GSS_C_INDEFINITE,
406 GSS_C_NO_OID_SET, cred_usage,
407 cfg->cred_store, &acquired_cred,
409 if (GSS_ERROR(maj)) {
410 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req, "%s",
411 mag_error(req, "gss_acquire_cred_from() failed",
419 if (!acquired_cred) {
420 /* Try to acquire default creds */
421 maj = gss_acquire_cred(&min, GSS_C_NO_NAME, GSS_C_INDEFINITE,
422 GSS_C_NO_OID_SET, cred_usage,
423 &acquired_cred, NULL, NULL);
424 if (GSS_ERROR(maj)) {
425 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req,
426 "%s", mag_error(req, "gss_acquire_cred_from()"
427 " failed", maj, min));
431 if (cred_usage == GSS_C_BOTH) {
432 /* If GSS_C_BOTH is used then inquire_cred will return the client
433 * name instead of the SPN of the server credentials. Therefore we
434 * need to acquire a different set of credential setting
435 * GSS_C_ACCEPT explicitly */
436 if (cfg->cred_store) {
437 maj = gss_acquire_cred_from(&min, GSS_C_NO_NAME,
438 GSS_C_INDEFINITE, GSS_C_NO_OID_SET,
439 GSS_C_ACCEPT, cfg->cred_store,
440 &server_cred, NULL, NULL);
442 /* Try to acquire default creds */
443 maj = gss_acquire_cred(&min, GSS_C_NO_NAME, GSS_C_INDEFINITE,
444 GSS_C_NO_OID_SET, GSS_C_ACCEPT,
445 &server_cred, NULL, NULL);
447 if (GSS_ERROR(maj)) {
448 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req, "%s",
449 mag_error(req, "gss_acquire_cred[_from]() "
450 "failed to get server creds",
455 server_cred = acquired_cred;
457 maj = gss_inquire_cred(&min, server_cred, &server,
459 if (GSS_ERROR(maj)) {
460 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req,
461 "%s", mag_error(req, "gss_inquired_cred_() "
462 "failed", maj, min));
465 if (server_cred != acquired_cred) {
466 gss_release_cred(&min, &server_cred);
469 if (cfg->deleg_ccache_dir) {
470 /* delegate ourselves credentials so we store them as requested */
471 init_flags |= GSS_C_DELEG_FLAG;
474 /* output and input are inverted here, this is intentional */
475 maj = gss_init_sec_context(&min, user_cred, &user_ctx, server,
476 GSS_C_NO_OID, init_flags, 300,
477 GSS_C_NO_CHANNEL_BINDINGS, &output,
478 NULL, &input, NULL, NULL);
479 if (GSS_ERROR(maj)) {
480 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req,
481 "%s", mag_error(req, "gss_init_sec_context() "
482 "failed", maj, min));
487 maj = gss_accept_sec_context(&min, pctx, acquired_cred,
488 &input, GSS_C_NO_CHANNEL_BINDINGS,
489 &client, &mech_type, &output, &flags, &vtime,
491 if (GSS_ERROR(maj)) {
492 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req, "%s",
493 mag_error(req, "gss_accept_sec_context() failed",
498 while (maj == GSS_S_CONTINUE_NEEDED) {
499 gss_release_buffer(&min, &input);
500 /* output and input are inverted here, this is intentional */
501 maj = gss_init_sec_context(&min, user_cred, &user_ctx, server,
502 GSS_C_NO_OID, init_flags, 300,
503 GSS_C_NO_CHANNEL_BINDINGS, &output,
504 NULL, &input, NULL, NULL);
505 if (GSS_ERROR(maj)) {
506 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req,
507 "%s", mag_error(req, "gss_init_sec_context() "
508 "failed", maj, min));
511 gss_release_buffer(&min, &output);
512 maj = gss_accept_sec_context(&min, pctx, acquired_cred,
513 &input, GSS_C_NO_CHANNEL_BINDINGS,
514 &client, &mech_type, &output, &flags,
515 &vtime, &delegated_cred);
516 if (GSS_ERROR(maj)) {
517 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req,
518 "%s", mag_error(req, "gss_accept_sec_context()"
519 " failed", maj, min));
523 } else if (maj == GSS_S_CONTINUE_NEEDED) {
525 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req,
526 "Mechanism needs continuation but neither "
527 "GssapiConnectionBound nor "
528 "GssapiUseSessions are available");
529 gss_delete_sec_context(&min, pctx, GSS_C_NO_BUFFER);
530 gss_release_buffer(&min, &output);
533 /* auth not complete send token and wait next packet */
537 /* Always set the GSS name in an env var */
538 maj = gss_display_name(&min, client, &name, NULL);
539 if (GSS_ERROR(maj)) {
540 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req, "%s",
541 mag_error(req, "gss_display_name() failed",
545 clientname = apr_pstrndup(req->pool, name.value, name.length);
546 apr_table_set(req->subprocess_env, "GSS_NAME", clientname);
547 expiration = time(NULL) + vtime;
548 apr_table_set(req->subprocess_env, "GSS_SESSION_EXPIRATION",
549 apr_psprintf(req->pool, "%ld", (long)expiration));
551 #ifdef HAVE_GSS_STORE_CRED_INTO
552 if (cfg->deleg_ccache_dir && delegated_cred != GSS_C_NO_CREDENTIAL) {
553 char *ccachefile = NULL;
555 mag_store_deleg_creds(req, cfg->deleg_ccache_dir, clientname,
556 delegated_cred, &ccachefile);
559 apr_table_set(req->subprocess_env, "KRB5CCNAME", ccachefile);
564 if (cfg->map_to_local) {
565 maj = gss_localname(&min, client, mech_type, &lname);
566 if (maj != GSS_S_COMPLETE) {
567 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req, "%s",
568 mag_error(req, "gss_localname() failed", maj, min));
571 req->user = apr_pstrndup(req->pool, lname.value, lname.length);
573 req->user = clientname;
577 mc->user_name = apr_pstrdup(mc->parent, req->user);
578 mc->gss_name = apr_pstrdup(mc->parent, clientname);
579 mc->established = true;
580 if (vtime == GSS_C_INDEFINITE || vtime < MIN_SESS_EXP_TIME) {
581 vtime = MIN_SESS_EXP_TIME;
583 mc->expiration = expiration;
584 if (cfg->use_sessions) {
585 mag_attempt_session(req, cfg, mc);
587 mc->auth_type = auth_type;
590 if (cfg->send_persist)
591 apr_table_set(req->headers_out, "Persistent-Auth",
592 cfg->gss_conn_ctx ? "true" : "false");
597 if ((!is_basic) && (output.length != 0)) {
598 replen = apr_base64_encode_len(output.length) + 1;
599 reply = apr_pcalloc(req->pool, 10 + replen);
601 memcpy(reply, "Negotiate ", 10);
602 apr_base64_encode(&reply[10], output.value, output.length);
603 apr_table_add(req->err_headers_out,
604 "WWW-Authenticate", reply);
606 } else if (ret == HTTP_UNAUTHORIZED) {
607 apr_table_add(req->err_headers_out,
608 "WWW-Authenticate", "Negotiate");
609 if (cfg->use_basic_auth) {
610 apr_table_add(req->err_headers_out,
612 apr_psprintf(req->pool, "Basic realm=\"%s\"",
616 #ifdef HAVE_GSS_KRB5_CCACHE_NAME
617 if (user_ccache != NULL) {
618 maj = gss_krb5_ccache_name(&min, orig_ccache, NULL);
619 if (maj != GSS_S_COMPLETE) {
620 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, req,
621 "Failed to restore per-thread ccache, %s",
622 mag_error(req, "gss_krb5_ccache_name() "
623 "failed", maj, min));
627 gss_delete_sec_context(&min, &user_ctx, &output);
628 gss_release_cred(&min, &user_cred);
629 gss_release_cred(&min, &acquired_cred);
630 gss_release_cred(&min, &delegated_cred);
631 gss_release_buffer(&min, &output);
632 gss_release_name(&min, &client);
633 gss_release_name(&min, &server);
634 gss_release_buffer(&min, &name);
635 gss_release_buffer(&min, &lname);
640 static void *mag_create_dir_config(apr_pool_t *p, char *dir)
642 struct mag_config *cfg;
644 cfg = (struct mag_config *)apr_pcalloc(p, sizeof(struct mag_config));
650 static const char *mag_ssl_only(cmd_parms *parms, void *mconfig, int on)
652 struct mag_config *cfg = (struct mag_config *)mconfig;
653 cfg->ssl_only = on ? true : false;
657 static const char *mag_map_to_local(cmd_parms *parms, void *mconfig, int on)
659 struct mag_config *cfg = (struct mag_config *)mconfig;
660 cfg->map_to_local = on ? true : false;
664 static const char *mag_conn_ctx(cmd_parms *parms, void *mconfig, int on)
666 struct mag_config *cfg = (struct mag_config *)mconfig;
667 cfg->gss_conn_ctx = on ? true : false;
671 static const char *mag_send_persist(cmd_parms *parms, void *mconfig, int on)
673 struct mag_config *cfg = (struct mag_config *)mconfig;
674 cfg->send_persist = on ? true : false;
678 static const char *mag_use_sess(cmd_parms *parms, void *mconfig, int on)
680 struct mag_config *cfg = (struct mag_config *)mconfig;
681 cfg->use_sessions = on ? true : false;
685 static const char *mag_use_s4u2p(cmd_parms *parms, void *mconfig, int on)
687 struct mag_config *cfg = (struct mag_config *)mconfig;
688 cfg->use_s4u2proxy = on ? true : false;
690 if (cfg->deleg_ccache_dir == NULL) {
691 cfg->deleg_ccache_dir = apr_pstrdup(parms->pool, "/tmp");
696 static const char *mag_sess_key(cmd_parms *parms, void *mconfig, const char *w)
698 struct mag_config *cfg = (struct mag_config *)mconfig;
705 if (strncmp(w, "key:", 4) != 0) {
706 ap_log_error(APLOG_MARK, APLOG_ERR, 0, parms->server,
707 "Invalid key format, expected prefix 'key:'");
712 l = apr_base64_decode_len(k);
713 val = apr_palloc(parms->temp_pool, l);
715 keys.length = (int)apr_base64_decode_binary(val, k);
716 keys.value = (unsigned char *)val;
718 if (keys.length != 32) {
719 ap_log_error(APLOG_MARK, APLOG_ERR, 0, parms->server,
720 "Invalid key length, expected 32 got %d", keys.length);
724 rc = SEAL_KEY_CREATE(cfg->pool, &cfg->mag_skey, &keys);
726 ap_log_error(APLOG_MARK, APLOG_ERR, 0, parms->server,
727 "Failed to import sealing key!");
732 #define MAX_CRED_OPTIONS 10
734 static const char *mag_cred_store(cmd_parms *parms, void *mconfig,
737 struct mag_config *cfg = (struct mag_config *)mconfig;
738 gss_key_value_element_desc *elements;
747 ap_log_error(APLOG_MARK, APLOG_ERR, 0, parms->server,
748 "%s [%s]", "Invalid syntax for GssapiCredStore option", w);
752 key = apr_pstrndup(parms->pool, w, (p-w));
753 value = apr_pstrdup(parms->pool, p + 1);
755 if (!cfg->cred_store) {
756 cfg->cred_store = apr_pcalloc(parms->pool,
757 sizeof(gss_key_value_set_desc));
758 size = sizeof(gss_key_value_element_desc) * MAX_CRED_OPTIONS;
759 cfg->cred_store->elements = apr_palloc(parms->pool, size);
762 elements = cfg->cred_store->elements;
763 count = cfg->cred_store->count;
765 if (count >= MAX_CRED_OPTIONS) {
766 ap_log_error(APLOG_MARK, APLOG_ERR, 0, parms->server,
767 "Too many GssapiCredStore options (MAX: %d)",
771 cfg->cred_store->count++;
773 elements[count].key = key;
774 elements[count].value = value;
779 static const char *mag_deleg_ccache_dir(cmd_parms *parms, void *mconfig,
782 struct mag_config *cfg = (struct mag_config *)mconfig;
784 cfg->deleg_ccache_dir = apr_pstrdup(parms->pool, value);
789 static const char *mag_use_basic_auth(cmd_parms *parms, void *mconfig, int on)
791 struct mag_config *cfg = (struct mag_config *)mconfig;
793 cfg->use_basic_auth = on ? true : false;
797 static const command_rec mag_commands[] = {
798 AP_INIT_FLAG("GssapiSSLonly", mag_ssl_only, NULL, OR_AUTHCFG,
799 "Work only if connection is SSL Secured"),
800 AP_INIT_FLAG("GssapiLocalName", mag_map_to_local, NULL, OR_AUTHCFG,
801 "Translate principals to local names"),
802 AP_INIT_FLAG("GssapiConnectionBound", mag_conn_ctx, NULL, OR_AUTHCFG,
803 "Authentication is bound to the TCP connection"),
804 AP_INIT_FLAG("GssapiSignalPersistentAuth", mag_send_persist, NULL, OR_AUTHCFG,
805 "Send Persitent-Auth header according to connection bound"),
806 AP_INIT_FLAG("GssapiUseSessions", mag_use_sess, NULL, OR_AUTHCFG,
807 "Authentication uses mod_sessions to hold status"),
808 AP_INIT_RAW_ARGS("GssapiSessionKey", mag_sess_key, NULL, OR_AUTHCFG,
809 "Key Used to seal session data."),
810 #ifdef HAVE_GSS_ACQUIRE_CRED_FROM
811 AP_INIT_FLAG("GssapiUseS4U2Proxy", mag_use_s4u2p, NULL, OR_AUTHCFG,
812 "Initializes credentials for s4u2proxy usage"),
814 #ifdef HAVE_GSS_STORE_CRED_INTO
815 AP_INIT_ITERATE("GssapiCredStore", mag_cred_store, NULL, OR_AUTHCFG,
817 AP_INIT_RAW_ARGS("GssapiDelegCcacheDir", mag_deleg_ccache_dir, NULL,
818 OR_AUTHCFG, "Directory to store delegated credentials"),
820 #ifdef HAVE_GSS_ACQUIRE_CRED_WITH_PASSWORD
821 AP_INIT_FLAG("GssapiBasicAuth", mag_use_basic_auth, NULL, OR_AUTHCFG,
822 "Allows use of Basic Auth for authentication"),
828 mag_register_hooks(apr_pool_t *p)
830 ap_hook_check_user_id(mag_auth, NULL, NULL, APR_HOOK_MIDDLE);
831 ap_hook_post_config(mag_post_config, NULL, NULL, APR_HOOK_MIDDLE);
832 ap_hook_pre_connection(mag_pre_connection, NULL, NULL, APR_HOOK_MIDDLE);
835 module AP_MODULE_DECLARE_DATA auth_gssapi_module =
837 STANDARD20_MODULE_STUFF,
838 mag_create_dir_config,