2 * Daniel Kouril <kouril@users.sourceforge.net>
4 * Source and Documentation can be found at:
5 * http://modauthkerb.sourceforge.net/
8 * James E. Robinson, III <james@ncstate.net>
9 * Daniel Henninger <daniel@ncsu.edu>
10 * Ludek Sulak <xsulak@fi.muni.cz>
14 * Copyright (c) 2004-2006 Masarykova universita
15 * (Masaryk University, Brno, Czech Republic)
16 * All rights reserved.
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions are met:
21 * 1. Redistributions of source code must retain the above copyright notice,
22 * this list of conditions and the following disclaimer.
24 * 2. Redistributions in binary form must reproduce the above copyright
25 * notice, this list of conditions and the following disclaimer in the
26 * documentation and/or other materials provided with the distribution.
28 * 3. Neither the name of the University nor the names of its contributors may
29 * be used to endorse or promote products derived from this software
30 * without specific prior written permission.
32 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
33 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
35 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
36 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
37 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
38 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
39 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
40 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
41 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
42 * POSSIBILITY OF SUCH DAMAGE.
53 #define MODAUTHKERB_VERSION "5.0"
55 #define MECH_NEGOTIATE "Negotiate"
56 #define SERVICE_NAME "HTTP"
59 #include <http_config.h>
60 #include <http_core.h>
62 #include <http_protocol.h>
63 #include <http_request.h>
65 #ifdef STANDARD20_MODULE_STUFF
66 #include <apr_strings.h>
67 #include <apr_base64.h>
69 #define apr_pstrdup ap_pstrdup
70 #define apr_psprintf ap_psprintf
71 #define apr_pstrcat ap_pstrcat
72 #define apr_pcalloc ap_pcalloc
73 #define apr_table_setn ap_table_setn
74 #define apr_table_add ap_table_add
75 #define apr_base64_decode_len ap_base64decode_len
76 #define apr_base64_decode ap_base64decode
77 #define apr_base64_encode_len ap_base64encode_len
78 #define apr_base64_encode ap_base64encode
79 #define apr_pool_cleanup_null ap_null_cleanup
80 #define apr_pool_cleanup_register ap_register_cleanup
81 #endif /* STANDARD20_MODULE_STUFF */
84 #define vsnprintf _vsnprintf
85 #define snprintf _snprintf
93 # include <gssapi/gssapi.h>
94 # include <gssapi/gssapi_generic.h>
95 # include <gssapi/gssapi_krb5.h>
96 # define GSS_C_NT_USER_NAME gss_nt_user_name
97 # define GSS_C_NT_HOSTBASED_SERVICE gss_nt_service_name
98 # define krb5_get_err_text(context,code) error_message(code)
100 #ifndef GSSAPI_SUPPORTS_SPNEGO
101 # include "spnegokrb5.h"
106 /* Prevent warning about closesocket redefinition (Apache's ap_config.h and
107 * MIT Kerberos' port-sockets.h both define it as close) */
112 #include <netdb.h> /* gethostbyname() */
116 /* should be HAVE_UNISTD_H instead */
120 #ifdef STANDARD20_MODULE_STUFF
121 module AP_MODULE_DECLARE_DATA auth_kerb_module;
123 module auth_kerb_module;
126 /***************************************************************************
127 Macros To Ease Compatibility
128 ***************************************************************************/
129 #ifdef STANDARD20_MODULE_STUFF
130 #define MK_POOL apr_pool_t
131 #define MK_TABLE_GET apr_table_get
132 #define MK_USER r->user
133 #define MK_AUTH_TYPE r->ap_auth_type
136 #define MK_TABLE_GET ap_table_get
137 #define MK_USER r->connection->user
138 #define MK_AUTH_TYPE r->connection->ap_auth_type
139 #define PROXYREQ_PROXY STD_PROXY
142 /***************************************************************************
143 Auth Configuration Structure
144 ***************************************************************************/
146 char *krb_auth_realms;
147 int krb_save_credentials;
149 const char *krb_service_name;
150 int krb_authoritative;
151 int krb_delegate_basic;
153 int krb_ssl_preauthentication;
157 int krb_method_gssapi;
158 int krb_method_k5pass;
162 int krb_method_k4pass;
167 set_kerb_auth_headers(request_rec *r, const kerb_auth_config *conf,
168 int use_krb4, int use_krb5pwd, char *negotiate_ret_value);
171 krb5_save_realms(cmd_parms *cmd, void *sec, const char *arg);
173 #ifdef STANDARD20_MODULE_STUFF
174 #define command(name, func, var, type, usage) \
175 AP_INIT_ ## type (name, (void*) func, \
176 (void*)APR_OFFSETOF(kerb_auth_config, var), \
177 OR_AUTHCFG | RSRC_CONF, usage)
179 #define command(name, func, var, type, usage) \
181 (void*)XtOffsetOf(kerb_auth_config, var), \
182 OR_AUTHCFG | RSRC_CONF, type, usage }
185 static const command_rec kerb_auth_cmds[] = {
186 command("KrbAuthRealms", krb5_save_realms, krb_auth_realms,
187 RAW_ARGS, "Realms to attempt authentication against (can be multiple)."),
189 command("KrbAuthRealm", krb5_save_realms, krb_auth_realms,
190 RAW_ARGS, "Alias for KrbAuthRealms."),
192 command("KrbSaveCredentials", ap_set_flag_slot, krb_save_credentials,
193 FLAG, "Save and store credentials/tickets retrieved during auth."),
195 command("KrbVerifyKDC", ap_set_flag_slot, krb_verify_kdc,
196 FLAG, "Verify tickets against keytab to prevent KDC spoofing attacks."),
198 command("KrbServiceName", ap_set_string_slot, krb_service_name,
199 TAKE1, "Full or partial service name to be used by Apache for authentication."),
201 command("KrbAuthoritative", ap_set_flag_slot, krb_authoritative,
202 FLAG, "Set to 'off' to allow access control to be passed along to lower modules iff the UserID is not known to this module."),
204 command("KrbDelegateBasic", ap_set_flag_slot, krb_delegate_basic,
205 FLAG, "Always offer Basic authentication regardless of KrbMethodK5Pass and pass on authentication to lower modules if Basic headers arrive."),
208 command("KrbEnableSSLPreauthentication", ap_set_flag_slot, krb_ssl_preauthentication,
209 FLAG, "Don't do Kerberos authentication if the user is already authenticated using SSL and her client certificate."),
213 command("Krb5Keytab", ap_set_file_slot, krb_5_keytab,
214 TAKE1, "Location of Kerberos V5 keytab file."),
216 command("KrbMethodNegotiate", ap_set_flag_slot, krb_method_gssapi,
217 FLAG, "Enable Negotiate authentication method."),
219 command("KrbMethodK5Passwd", ap_set_flag_slot, krb_method_k5pass,
220 FLAG, "Enable Kerberos V5 password authentication."),
224 command("Krb4Srvtab", ap_set_file_slot, krb_4_srvtab,
225 TAKE1, "Location of Kerberos V4 srvtab file."),
227 command("KrbMethodK4Passwd", ap_set_flag_slot, krb_method_k4pass,
228 FLAG, "Enable Kerberos V4 password authentication."),
236 mkstemp(char *template)
241 start = strlen(template) - 1;
242 while(template[start] == 'X') {
243 template[start] = '0' + val % 10;
250 fd = open(template, O_RDWR | O_CREAT | O_EXCL, 0600);
251 if(fd >= 0 || errno != EEXIST)
258 if(template[i] == '9' + 1)
260 if(template[i] <= 'z')
269 #if defined(KRB5) && !defined(HEIMDAL)
270 /* Needed to work around problems with replay caches */
271 #include "mit-internals.h"
273 /* This is our replacement krb5_rc_store function */
274 static krb5_error_code KRB5_LIB_FUNCTION
275 mod_auth_kerb_rc_store(krb5_context context, krb5_rcache rcache,
276 krb5_donot_replay_internal *donot_replay)
281 /* And this is the operations vector for our replay cache */
282 const krb5_rc_ops_internal mod_auth_kerb_rc_ops = {
289 mod_auth_kerb_rc_store,
291 krb5_rc_dfl_get_span,
292 krb5_rc_dfl_get_name,
298 /***************************************************************************
299 Auth Configuration Initialization
300 ***************************************************************************/
301 static void *kerb_dir_create_config(MK_POOL *p, char *d)
303 kerb_auth_config *rec;
305 rec = (kerb_auth_config *) apr_pcalloc(p, sizeof(kerb_auth_config));
306 ((kerb_auth_config *)rec)->krb_verify_kdc = 1;
307 ((kerb_auth_config *)rec)->krb_service_name = NULL;
308 ((kerb_auth_config *)rec)->krb_authoritative = 1;
309 ((kerb_auth_config *)rec)->krb_delegate_basic = 0;
311 ((kerb_auth_config *)rec)->krb_ssl_preauthentication = 0;
314 ((kerb_auth_config *)rec)->krb_method_k5pass = 1;
315 ((kerb_auth_config *)rec)->krb_method_gssapi = 1;
318 ((kerb_auth_config *)rec)->krb_method_k4pass = 1;
324 krb5_save_realms(cmd_parms *cmd, void *vsec, const char *arg)
326 kerb_auth_config *sec = (kerb_auth_config *) vsec;
327 sec->krb_auth_realms= apr_pstrdup(cmd->pool, arg);
332 log_rerror(const char *file, int line, int level, int status,
333 const request_rec *r, const char *fmt, ...)
339 vsnprintf(errstr, sizeof(errstr), fmt, ap);
343 #ifdef STANDARD20_MODULE_STUFF
344 ap_log_rerror(file, line, level | APLOG_NOERRNO, status, r, "%s", errstr);
346 ap_log_rerror(file, line, level | APLOG_NOERRNO, r, "%s", errstr);
351 /***************************************************************************
352 Username/Password Validation for Krb4
353 ***************************************************************************/
355 verify_krb4_user(request_rec *r, char *name, char *instance, char *realm,
356 char *password, char *linstance, char *srvtab, int krb_verify_kdc)
362 const char *hostname;
365 char lrealm[REALM_SZ];
367 ret = krb_get_pw_in_tkt(name, instance, realm, "krbtgt", realm,
368 DEFAULT_TKT_LIFE, password);
370 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
371 "Cannot get krb4 ticket: krb_get_pw_in_tkt() failed: %s",
372 krb_get_err_text(ret));
379 hostname = ap_get_server_name(r);
381 hp = gethostbyname(hostname);
384 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
385 "Cannot verify krb4 ticket: gethostbyname() failed: %s",
389 memcpy(&addr, hp->h_addr, sizeof(addr));
391 phost = krb_get_phost((char *)hostname);
393 krb_get_lrealm(lrealm, 1);
395 ret = krb_mk_req(&ticket, linstance, phost, lrealm, 0);
397 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
398 "Cannot verify krb4 ticket: krb_mk_req() failed: %s",
399 krb_get_err_text(ret));
404 ret = krb_rd_req(&ticket, linstance, phost, addr, &authdata, srvtab);
406 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
407 "Cannot verify krb4 ticket: krb_rd_req() failed: %s",
408 krb_get_err_text(ret));
416 krb4_cache_cleanup(void *data)
418 char *tkt_file = (char *) data;
420 krb_set_tkt_string(tkt_file);
426 authenticate_user_krb4pwd(request_rec *r,
427 kerb_auth_config *conf,
428 const char *auth_line)
432 const char *sent_name;
435 char *tkt_file_p = NULL;
440 char lrealm[REALM_SZ];
441 int all_principals_unkown;
443 sent_pw = ap_pbase64decode(r->pool, auth_line);
444 sent_name = ap_getword (r->pool, &sent_pw, ':');
446 /* do not allow user to override realm setting of server */
447 if (ap_strchr_c(sent_name, '@')) {
448 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
449 "specifying realm in user name is prohibited");
450 return HTTP_UNAUTHORIZED;
453 sent_instance = strchr(sent_name, '.');
455 *sent_instance++ = '\0';
457 snprintf(tkt_file, sizeof(tkt_file), "/tmp/apache_tkt_XXXXXX");
458 fd = mkstemp(tkt_file);
460 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
461 "Cannot create krb4 ccache: mkstemp() failed: %s",
463 return HTTP_INTERNAL_SERVER_ERROR;
466 tkt_file_p = ap_pstrdup(r->pool, tkt_file);
467 ap_register_cleanup(r->pool, tkt_file_p,
468 krb4_cache_cleanup, ap_null_cleanup);
470 krb_set_tkt_string(tkt_file);
472 all_principals_unkown = 1;
473 realms = conf->krb_auth_realms;
475 memset(lrealm, 0, sizeof(lrealm));
478 realm = ap_getword_white(r->pool, &realms);
481 ret = krb_get_lrealm(lrealm, 1);
487 /* XXX conf->krb_service_name */
488 ret = verify_krb4_user(r, (char *)sent_name,
489 (sent_instance) ? sent_instance : "",
490 (char *)realm, (char *)sent_pw,
491 conf->krb_service_name,
492 conf->krb_4_srvtab, conf->krb_verify_kdc);
493 if (!conf->krb_authoritative && ret) {
494 /* if we're not authoritative, we allow authentication to pass on
495 * to another modules if (and only if) the user is not known to us */
496 if (all_principals_unkown && ret != KDC_PR_UNKNOWN)
497 all_principals_unkown = 0;
502 } while (realms && *realms);
505 /* XXX log only in the verify_krb4_user() call */
506 log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "Verifying krb4 password failed");
507 ret = (!conf->krb_authoritative && all_principals_unkown == 1 && ret == KDC_PR_UNKNOWN) ?
508 DECLINED : HTTP_UNAUTHORIZED;
512 user = ap_pstrdup(r->pool, sent_name);
514 user = ap_pstrcat(r->pool, user, ".", sent_instance, NULL);
515 user = ap_pstrcat(r->pool, user, "@", realm, NULL);
518 MK_AUTH_TYPE = "Basic";
519 ap_table_setn(r->subprocess_env, "KRBTKFILE", tkt_file_p);
521 if (!conf->krb_save_credentials)
522 krb4_cache_cleanup(tkt_file);
526 krb4_cache_cleanup(tkt_file);
535 /***************************************************************************
536 Username/Password Validation for Krb5
537 ***************************************************************************/
539 /* MIT kerberos uses replay cache checks even during credential verification
540 * (i.e. in krb5_verify_init_creds()), which is obviosuly useless. In order to
541 * avoid problems with multiple apache processes accessing the same rcache file
542 * we had to use this call instead, which is only a bit modified version of
543 * krb5_verify_init_creds() */
544 static krb5_error_code
545 verify_krb5_init_creds(request_rec *r, krb5_context context, krb5_creds *creds,
546 krb5_principal ap_req_server, krb5_keytab ap_req_keytab)
550 krb5_ccache local_ccache = NULL;
551 krb5_creds *new_creds = NULL;
552 krb5_auth_context auth_context = NULL;
553 krb5_keytab keytab = NULL;
556 memset(&req, 0, sizeof(req));
558 if (ap_req_keytab == NULL) {
559 ret = krb5_kt_default (context, &keytab);
563 keytab = ap_req_keytab;
565 ret = krb5_cc_resolve(context, "MEMORY:", &local_ccache);
567 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
568 "krb5_cc_resolve() failed when verifying KDC");
572 ret = krb5_cc_initialize(context, local_ccache, creds->client);
574 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
575 "krb5_cc_initialize() failed when verifying KDC");
579 ret = krb5_cc_store_cred (context, local_ccache, creds);
581 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
582 "krb5_cc_initialize() failed when verifying KDC");
586 ret = krb5_unparse_name(context, ap_req_server, &server_name);
588 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
589 "krb5_unparse_name() failed when verifying KDC");
592 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
593 "Trying to verify authenticity of KDC using principal %s", server_name);
596 if (!krb5_principal_compare (context, ap_req_server, creds->server)) {
597 krb5_creds match_cred;
599 memset (&match_cred, 0, sizeof(match_cred));
601 match_cred.client = creds->client;
602 match_cred.server = ap_req_server;
604 ret = krb5_get_credentials (context, 0, local_ccache,
605 &match_cred, &new_creds);
607 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
608 "krb5_get_credentials() failed when verifying KDC");
614 ret = krb5_mk_req_extended (context, &auth_context, 0, NULL, creds, &req);
616 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
617 "krb5_mk_req_extended() failed when verifying KDC");
621 krb5_auth_con_free (context, auth_context);
623 ret = krb5_auth_con_init(context, &auth_context);
625 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
626 "krb5_auth_con_init() failed when verifying KDC");
629 /* use KRB5_AUTH_CONTEXT_DO_SEQUENCE to skip replay cache checks */
630 krb5_auth_con_setflags(context, auth_context, KRB5_AUTH_CONTEXT_DO_SEQUENCE);
632 ret = krb5_rd_req (context, &auth_context, &req, ap_req_server,
635 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
636 "krb5_rd_req() failed when verifying KDC");
642 /* XXX Do I ever want to support Heimdal 0.4 ??? */
643 krb5_data_free(&req);
645 krb5_free_data_contents(context, &req);
648 krb5_auth_con_free (context, auth_context);
650 krb5_free_creds (context, new_creds);
651 if (ap_req_keytab == NULL && keytab)
652 krb5_kt_close (context, keytab);
654 krb5_cc_destroy (context, local_ccache);
659 /* Inspired by krb5_verify_user from Heimdal */
660 static krb5_error_code
661 verify_krb5_user(request_rec *r, krb5_context context, krb5_principal principal,
662 const char *password, krb5_principal server,
663 krb5_keytab keytab, int krb_verify_kdc, krb5_ccache *ccache)
667 krb5_ccache ret_ccache = NULL;
670 /* XXX error messages shouldn't be logged here (and in the while() loop in
671 * authenticate_user_krb5pwd() as weell), in order to avoid confusing log
672 * entries when using multiple realms */
674 memset(&creds, 0, sizeof(creds));
676 ret = krb5_unparse_name(context, principal, &name);
678 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
679 "Trying to get TGT for user %s", name);
683 ret = krb5_get_init_creds_password(context, &creds, principal,
684 (char *)password, NULL,
685 NULL, 0, NULL, NULL);
687 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
688 "krb5_get_init_creds_password() failed: %s",
689 krb5_get_err_text(context, ret));
697 krb5_get_default_realm(context, &realm);
698 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
699 "trying to verify password using key for %s/%s@%s",
700 service, ap_get_server_name(r), realm);
704 if (krb_verify_kdc &&
705 (ret = verify_krb5_init_creds(r, context, &creds, server, keytab))) {
706 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
707 "failed to verify krb5 credentials: %s",
708 krb5_get_err_text(context, ret));
712 ret = krb5_cc_resolve(context, "MEMORY:", &ret_ccache);
714 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
715 "generating new memory ccache failed: %s",
716 krb5_get_err_text(context, ret));
720 ret = krb5_cc_initialize(context, ret_ccache, principal);
722 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
723 "krb5_cc_initialize() failed: %s",
724 krb5_get_err_text(context, ret));
728 ret = krb5_cc_store_cred(context, ret_ccache, &creds);
730 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
731 "krb5_cc_store_cred() failed: %s",
732 krb5_get_err_text(context, ret));
735 *ccache = ret_ccache;
739 krb5_free_cred_contents(context, &creds);
741 krb5_cc_destroy(context, ret_ccache);
747 krb5_cache_cleanup(void *data)
749 krb5_context context;
751 krb5_error_code problem;
752 char *cache_name = (char *) data;
754 problem = krb5_init_context(&context);
756 /* ap_log_error(APLOG_MARK, APLOG_ERR, 0, NULL, "krb5_init_context() failed"); */
757 return HTTP_INTERNAL_SERVER_ERROR;
760 problem = krb5_cc_resolve(context, cache_name, &cache);
762 /* log_error(APLOG_MARK, APLOG_ERR, 0, NULL,
763 "krb5_cc_resolve() failed (%s: %s)",
764 cache_name, krb5_get_err_text(context, problem)); */
765 return HTTP_INTERNAL_SERVER_ERROR;
768 krb5_cc_destroy(context, cache);
769 krb5_free_context(context);
774 create_krb5_ccache(krb5_context kcontext,
776 kerb_auth_config *conf,
777 krb5_principal princ,
782 krb5_error_code problem;
784 krb5_ccache tmp_ccache = NULL;
786 ccname = apr_psprintf(r->pool, "FILE:%s/krb5cc_apache_XXXXXX", P_tmpdir);
787 fd = mkstemp(ccname + strlen("FILE:"));
789 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
790 "mkstemp() failed: %s", strerror(errno));
791 ret = HTTP_INTERNAL_SERVER_ERROR;
796 problem = krb5_cc_resolve(kcontext, ccname, &tmp_ccache);
798 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
799 "krb5_cc_resolve() failed: %s",
800 krb5_get_err_text(kcontext, problem));
801 ret = HTTP_INTERNAL_SERVER_ERROR;
806 problem = krb5_cc_initialize(kcontext, tmp_ccache, princ);
808 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
809 "Cannot initialize krb5 ccache %s: krb5_cc_initialize() failed: %s",
810 ccname, krb5_get_err_text(kcontext, problem));
811 ret = HTTP_INTERNAL_SERVER_ERROR;
815 apr_table_setn(r->subprocess_env, "KRB5CCNAME", ccname);
816 apr_pool_cleanup_register(r->pool, ccname, krb5_cache_cleanup,
817 apr_pool_cleanup_null);
819 *ccache = tmp_ccache;
826 krb5_cc_destroy(kcontext, tmp_ccache);
832 store_krb5_creds(krb5_context kcontext,
834 kerb_auth_config *conf,
835 krb5_ccache delegated_cred)
838 krb5_error_code problem;
839 krb5_principal princ;
843 problem = krb5_cc_get_principal(kcontext, delegated_cred, &princ);
845 snprintf(errstr, sizeof(errstr), "krb5_cc_get_principal() failed: %s",
846 krb5_get_err_text(kcontext, problem));
847 return HTTP_INTERNAL_SERVER_ERROR;
850 ret = create_krb5_ccache(kcontext, r, conf, princ, &ccache);
852 krb5_free_principal(kcontext, princ);
857 problem = krb5_cc_copy_cache(kcontext, delegated_cred, ccache);
859 problem = krb5_cc_copy_creds(kcontext, delegated_cred, ccache);
861 krb5_free_principal(kcontext, princ);
863 snprintf(errstr, sizeof(errstr), "Failed to store credentials: %s",
864 krb5_get_err_text(kcontext, problem));
865 krb5_cc_destroy(kcontext, ccache);
866 return HTTP_INTERNAL_SERVER_ERROR;
869 krb5_cc_close(kcontext, ccache);
875 authenticate_user_krb5pwd(request_rec *r,
876 kerb_auth_config *conf,
877 const char *auth_line)
879 const char *sent_pw = NULL;
880 const char *sent_name = NULL;
881 const char *realms = NULL;
882 const char *realm = NULL;
883 krb5_context kcontext = NULL;
884 krb5_error_code code;
885 krb5_principal client = NULL;
886 krb5_principal server = NULL;
887 krb5_ccache ccache = NULL;
888 krb5_keytab keytab = NULL;
891 int all_principals_unkown;
894 code = krb5_init_context(&kcontext);
896 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
897 "Cannot initialize Kerberos5 context (%d)", code);
898 return HTTP_INTERNAL_SERVER_ERROR;
901 sent_pw = ap_pbase64decode(r->pool, auth_line);
902 sent_name = ap_getword (r->pool, &sent_pw, ':');
904 if (sent_pw == NULL || *sent_pw == '\0') {
905 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
906 "empty passwords are not accepted");
907 ret = HTTP_UNAUTHORIZED;
911 if (conf->krb_5_keytab)
912 krb5_kt_resolve(kcontext, conf->krb_5_keytab, &keytab);
914 if (conf->krb_service_name && strchr(conf->krb_service_name, '/') != NULL)
915 ret = krb5_parse_name (kcontext, conf->krb_service_name, &server);
917 ret = krb5_sname_to_principal(kcontext, ap_get_server_name(r),
918 (conf->krb_service_name) ? conf->krb_service_name : SERVICE_NAME,
919 KRB5_NT_SRV_HST, &server);
922 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
923 "Error parsing server name (%s): %s",
924 (conf->krb_service_name) ? conf->krb_service_name : SERVICE_NAME,
925 krb5_get_err_text(kcontext, ret));
926 ret = HTTP_UNAUTHORIZED;
930 code = krb5_unparse_name(kcontext, server, &name);
932 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
933 "krb5_unparse_name() failed: %s",
934 krb5_get_err_text(kcontext, code));
935 ret = HTTP_UNAUTHORIZED;
938 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "Using %s as server principal for password verification", name);
942 p = strchr(sent_name, '@');
945 if (conf->krb_auth_realms && !ap_find_token(r->pool, conf->krb_auth_realms, p)) {
946 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
947 "Specified realm `%s' not allowed by configuration", p);
948 ret = HTTP_UNAUTHORIZED;
953 realms = (p) ? p : conf->krb_auth_realms;
954 all_principals_unkown = 1;
956 name = (char *) sent_name;
957 if (realms && (realm = ap_getword_white(r->pool, &realms)))
958 name = apr_psprintf(r->pool, "%s@%s", sent_name, realm);
961 krb5_free_principal(kcontext, client);
965 code = krb5_parse_name(kcontext, name, &client);
967 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
968 "krb5_parse_name() failed: %s",
969 krb5_get_err_text(kcontext, code));
973 code = verify_krb5_user(r, kcontext, client, sent_pw,
974 server, keytab, conf->krb_verify_kdc, &ccache);
975 if (!conf->krb_authoritative && code) {
976 /* if we're not authoritative, we allow authentication to pass on
977 * to another modules if (and only if) the user is not known to us */
978 if (all_principals_unkown && code != KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN)
979 all_principals_unkown = 0;
985 /* ap_getword_white() used above shifts the parameter, so it's not
986 needed to touch the realms variable */
987 } while (realms && *realms);
989 memset((char *)sent_pw, 0, strlen(sent_pw));
992 if (!conf->krb_authoritative && all_principals_unkown == 1 && code == KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN)
995 ret = HTTP_UNAUTHORIZED;
1000 code = krb5_unparse_name(kcontext, client, &name);
1002 log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "krb5_unparse_name() failed: %s",
1003 krb5_get_err_text(kcontext, code));
1004 ret = HTTP_UNAUTHORIZED;
1007 MK_USER = apr_pstrdup (r->pool, name);
1008 MK_AUTH_TYPE = "Basic";
1011 if (conf->krb_save_credentials)
1012 store_krb5_creds(kcontext, r, conf, ccache);
1017 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
1018 "kerb_authenticate_user_krb5pwd ret=%d user=%s authtype=%s",
1019 ret, (MK_USER)?MK_USER:"(NULL)", (MK_AUTH_TYPE)?MK_AUTH_TYPE:"(NULL)");
1021 krb5_free_principal(kcontext, client);
1023 krb5_free_principal(kcontext, server);
1025 krb5_cc_destroy(kcontext, ccache);
1027 krb5_kt_close(kcontext, keytab);
1028 krb5_free_context(kcontext);
1033 /*********************************************************************
1034 * GSSAPI Authentication
1035 ********************************************************************/
1038 get_gss_error(MK_POOL *p, OM_uint32 err_maj, OM_uint32 err_min, char *prefix)
1040 OM_uint32 maj_stat, min_stat;
1041 OM_uint32 msg_ctx = 0;
1042 gss_buffer_desc status_string;
1045 err_msg = apr_pstrdup(p, prefix);
1047 maj_stat = gss_display_status (&min_stat,
1053 if (GSS_ERROR(maj_stat))
1055 err_msg = apr_pstrcat(p, err_msg, ": ", (char*) status_string.value, NULL);
1056 gss_release_buffer(&min_stat, &status_string);
1058 maj_stat = gss_display_status (&min_stat,
1064 if (!GSS_ERROR(maj_stat)) {
1065 err_msg = apr_pstrcat(p, err_msg,
1066 " (", (char*) status_string.value, ")", NULL);
1067 gss_release_buffer(&min_stat, &status_string);
1069 } while (!GSS_ERROR(maj_stat) && msg_ctx != 0);
1075 store_gss_creds(request_rec *r, kerb_auth_config *conf, char *princ_name,
1076 gss_cred_id_t delegated_cred)
1078 OM_uint32 maj_stat, min_stat;
1079 krb5_principal princ = NULL;
1080 krb5_ccache ccache = NULL;
1081 krb5_error_code problem;
1082 krb5_context context;
1083 int ret = HTTP_INTERNAL_SERVER_ERROR;
1085 problem = krb5_init_context(&context);
1087 log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "Cannot initialize krb5 context");
1088 return HTTP_INTERNAL_SERVER_ERROR;
1091 problem = krb5_parse_name(context, princ_name, &princ);
1093 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1094 "Cannot parse delegated username (%s)", krb5_get_err_text(context, problem));
1098 problem = create_krb5_ccache(context, r, conf, princ, &ccache);
1100 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1101 "Cannot create krb5 ccache (%s)", krb5_get_err_text(context, problem));
1105 maj_stat = gss_krb5_copy_ccache(&min_stat, delegated_cred, ccache);
1106 if (GSS_ERROR(maj_stat)) {
1107 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1108 "Cannot store delegated credential (%s)",
1109 get_gss_error(r->pool, maj_stat, min_stat, "gss_krb5_copy_ccache"));
1113 krb5_cc_close(context, ccache);
1119 krb5_free_principal(context, princ);
1121 krb5_cc_destroy(context, ccache);
1122 krb5_free_context(context);
1127 get_gss_creds(request_rec *r,
1128 kerb_auth_config *conf,
1129 gss_cred_id_t *server_creds)
1131 gss_buffer_desc token = GSS_C_EMPTY_BUFFER;
1132 OM_uint32 major_status, minor_status, minor_status2;
1133 gss_name_t server_name = GSS_C_NO_NAME;
1135 int have_server_princ;
1138 have_server_princ = conf->krb_service_name && strchr(conf->krb_service_name, '/') != NULL;
1139 if (have_server_princ)
1140 strncpy(buf, conf->krb_service_name, sizeof(buf));
1142 snprintf(buf, sizeof(buf), "%s@%s",
1143 (conf->krb_service_name) ? conf->krb_service_name : SERVICE_NAME,
1144 ap_get_server_name(r));
1147 token.length = strlen(buf) + 1;
1149 major_status = gss_import_name(&minor_status, &token,
1150 (have_server_princ) ? GSS_KRB5_NT_PRINCIPAL_NAME : GSS_C_NT_HOSTBASED_SERVICE,
1152 memset(&token, 0, sizeof(token));
1153 if (GSS_ERROR(major_status)) {
1154 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1155 "%s", get_gss_error(r->pool, major_status, minor_status,
1156 "gss_import_name() failed"));
1157 return HTTP_INTERNAL_SERVER_ERROR;
1160 major_status = gss_display_name(&minor_status, server_name, &token, NULL);
1161 if (GSS_ERROR(major_status)) {
1162 /* Perhaps we could just ignore this error but it's safer to give up now,
1164 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1165 "%s", get_gss_error(r->pool, major_status, minor_status,
1166 "gss_display_name() failed"));
1167 return HTTP_INTERNAL_SERVER_ERROR;
1170 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "Acquiring creds for %s",
1172 gss_release_buffer(&minor_status, &token);
1174 major_status = gss_acquire_cred(&minor_status, server_name, GSS_C_INDEFINITE,
1175 GSS_C_NO_OID_SET, GSS_C_ACCEPT,
1176 server_creds, NULL, NULL);
1177 gss_release_name(&minor_status2, &server_name);
1178 if (GSS_ERROR(major_status)) {
1179 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1180 "%s", get_gss_error(r->pool, major_status, minor_status,
1181 "gss_acquire_cred() failed"));
1182 return HTTP_INTERNAL_SERVER_ERROR;
1187 * With MIT Kerberos 5 1.3.x the gss_cred_id_t is the same as
1188 * krb5_gss_cred_id_t and krb5_gss_cred_id_rec contains a pointer to
1190 * This allows us to override the replay cache function vector with
1192 * Note that this is a dirty hack to get things working and there may
1193 * well be unknown side-effects.
1196 krb5_gss_cred_id_t gss_creds = (krb5_gss_cred_id_t) *server_creds;
1198 /* First we try to verify we are linked with 1.3.x to prevent from
1199 crashing when linked with 1.4.x */
1200 if (gss_creds && (gss_creds->usage == GSS_C_ACCEPT)) {
1201 if (gss_creds->rcache && gss_creds->rcache->ops &&
1202 gss_creds->rcache->ops->type &&
1203 memcmp(gss_creds->rcache->ops->type, "dfl", 3) == 0)
1204 /* Override the rcache operations */
1205 gss_creds->rcache->ops = &mod_auth_kerb_rc_ops;
1214 cmp_gss_type(gss_buffer_t token, gss_OID oid)
1219 if (token->length == 0)
1220 return GSS_S_DEFECTIVE_TOKEN;
1224 return GSS_S_DEFECTIVE_TOKEN;
1227 if ((len & 0x7f) > 4)
1228 return GSS_S_DEFECTIVE_TOKEN;
1232 return GSS_S_DEFECTIVE_TOKEN;
1234 if (((OM_uint32) *p++) != oid->length)
1235 return GSS_S_DEFECTIVE_TOKEN;
1237 return memcmp(p, oid->elements, oid->length);
1241 authenticate_user_gss(request_rec *r, kerb_auth_config *conf,
1242 const char *auth_line, char **negotiate_ret_value)
1244 OM_uint32 major_status, minor_status, minor_status2;
1245 gss_buffer_desc input_token = GSS_C_EMPTY_BUFFER;
1246 gss_buffer_desc output_token = GSS_C_EMPTY_BUFFER;
1247 const char *auth_param = NULL;
1249 gss_name_t client_name = GSS_C_NO_NAME;
1250 gss_cred_id_t delegated_cred = GSS_C_NO_CREDENTIAL;
1251 OM_uint32 (KRB5_LIB_FUNCTION *accept_sec_token)
1252 (OM_uint32 *, gss_ctx_id_t *, const gss_cred_id_t,
1253 const gss_buffer_t, const gss_channel_bindings_t,
1254 gss_name_t *, gss_OID *, gss_buffer_t, OM_uint32 *,
1255 OM_uint32 *, gss_cred_id_t *);
1256 gss_OID_desc spnego_oid;
1257 gss_ctx_id_t context = GSS_C_NO_CONTEXT;
1258 gss_cred_id_t server_creds = GSS_C_NO_CREDENTIAL;
1260 *negotiate_ret_value = "\0";
1262 spnego_oid.length = 6;
1263 spnego_oid.elements = (void *)"\x2b\x06\x01\x05\x05\x02";
1265 if (conf->krb_5_keytab) {
1267 /* we don't use the ap_* calls here, since the string passed to putenv()
1268 * will become part of the enviroment and shouldn't be free()ed by apache
1270 ktname = malloc(strlen("KRB5_KTNAME=") + strlen(conf->krb_5_keytab) + 1);
1271 if (ktname == NULL) {
1272 log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "malloc() failed: not enough memory");
1273 ret = HTTP_INTERNAL_SERVER_ERROR;
1276 sprintf(ktname, "KRB5_KTNAME=%s", conf->krb_5_keytab);
1279 /* Seems to be also supported by latest MIT */
1280 gsskrb5_register_acceptor_identity(conf->krb_5_keytab);
1284 ret = get_gss_creds(r, conf, &server_creds);
1288 /* ap_getword() shifts parameter */
1289 auth_param = ap_getword_white(r->pool, &auth_line);
1290 if (auth_param == NULL) {
1291 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1292 "No Authorization parameter in request from client");
1293 ret = HTTP_UNAUTHORIZED;
1297 input_token.length = apr_base64_decode_len(auth_param) + 1;
1298 input_token.value = apr_pcalloc(r->connection->pool, input_token.length);
1299 if (input_token.value == NULL) {
1300 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1301 "ap_pcalloc() failed (not enough memory)");
1302 ret = HTTP_INTERNAL_SERVER_ERROR;
1305 input_token.length = apr_base64_decode(input_token.value, auth_param);
1307 #ifdef GSSAPI_SUPPORTS_SPNEGO
1308 accept_sec_token = gss_accept_sec_context;
1310 accept_sec_token = (cmp_gss_type(&input_token, &spnego_oid) == 0) ?
1311 gss_accept_sec_context_spnego : gss_accept_sec_context;
1314 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "Verifying client data using %s",
1315 (accept_sec_token == gss_accept_sec_context)
1317 : "SPNEGO GSS-API");
1319 major_status = accept_sec_token(&minor_status,
1323 GSS_C_NO_CHANNEL_BINDINGS,
1330 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
1331 "Verification returned code %d", major_status);
1332 if (output_token.length) {
1336 len = apr_base64_encode_len(output_token.length) + 1;
1337 token = apr_pcalloc(r->connection->pool, len + 1);
1338 if (token == NULL) {
1339 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1340 "ap_pcalloc() failed (not enough memory)");
1341 ret = HTTP_INTERNAL_SERVER_ERROR;
1342 gss_release_buffer(&minor_status2, &output_token);
1345 apr_base64_encode(token, output_token.value, output_token.length);
1347 *negotiate_ret_value = token;
1348 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
1349 "GSS-API token of length %d bytes will be sent back",
1350 output_token.length);
1351 gss_release_buffer(&minor_status2, &output_token);
1352 set_kerb_auth_headers(r, conf, 0, 0, *negotiate_ret_value);
1355 if (GSS_ERROR(major_status)) {
1356 if (input_token.length > 7 && memcmp(input_token.value, "NTLMSSP", 7) == 0)
1357 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
1358 "Warning: received token seems to be NTLM, which isn't supported by the Kerberos module. Check your IE configuration.");
1360 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1361 "%s", get_gss_error(r->pool, major_status, minor_status,
1362 "gss_accept_sec_context() failed"));
1363 /* Don't offer the Negotiate method again if call to GSS layer failed */
1364 *negotiate_ret_value = NULL;
1365 ret = HTTP_UNAUTHORIZED;
1370 /* This is a _Kerberos_ module so multiple authentication rounds aren't
1371 * supported. If we wanted a generic GSS authentication we would have to do
1372 * some magic with exporting context etc. */
1373 if (major_status & GSS_S_CONTINUE_NEEDED) {
1374 ret = HTTP_UNAUTHORIZED;
1379 major_status = gss_display_name(&minor_status, client_name, &output_token, NULL);
1380 gss_release_name(&minor_status, &client_name);
1381 if (GSS_ERROR(major_status)) {
1382 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1383 "%s", get_gss_error(r->pool, major_status, minor_status,
1384 "gss_display_name() failed"));
1385 ret = HTTP_INTERNAL_SERVER_ERROR;
1389 MK_AUTH_TYPE = MECH_NEGOTIATE;
1390 MK_USER = apr_pstrdup(r->pool, output_token.value);
1392 if (conf->krb_save_credentials && delegated_cred != GSS_C_NO_CREDENTIAL)
1393 store_gss_creds(r, conf, (char *)output_token.value, delegated_cred);
1395 gss_release_buffer(&minor_status, &output_token);
1401 gss_release_cred(&minor_status, &delegated_cred);
1403 if (output_token.length)
1404 gss_release_buffer(&minor_status, &output_token);
1406 if (client_name != GSS_C_NO_NAME)
1407 gss_release_name(&minor_status, &client_name);
1409 if (server_creds != GSS_C_NO_CREDENTIAL)
1410 gss_release_cred(&minor_status, &server_creds);
1412 if (context != GSS_C_NO_CONTEXT)
1413 gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER);
1420 already_succeeded(request_rec *r)
1422 if (ap_is_initial_req(r) || MK_AUTH_TYPE == NULL)
1424 if (strcmp(MK_AUTH_TYPE, MECH_NEGOTIATE) ||
1425 (strcmp(MK_AUTH_TYPE, "Basic") && strchr(MK_USER, '@')))
1431 set_kerb_auth_headers(request_rec *r, const kerb_auth_config *conf,
1432 int use_krb4, int use_krb5pwd, char *negotiate_ret_value)
1434 const char *auth_name = NULL;
1436 char *negoauth_param;
1437 const char *header_name =
1438 (r->proxyreq == PROXYREQ_PROXY) ? "Proxy-Authenticate" : "WWW-Authenticate";
1440 /* get the user realm specified in .htaccess */
1441 auth_name = ap_auth_name(r);
1443 /* XXX should the WWW-Authenticate header be cleared first?
1444 * apache in the proxy mode should retain client's authN headers? */
1446 if (negotiate_ret_value != NULL && conf->krb_method_gssapi) {
1447 negoauth_param = (*negotiate_ret_value == '\0') ? MECH_NEGOTIATE :
1448 apr_pstrcat(r->pool, MECH_NEGOTIATE " ", negotiate_ret_value, NULL);
1449 apr_table_add(r->err_headers_out, header_name, negoauth_param);
1451 if ((use_krb5pwd && conf->krb_method_k5pass) || conf->krb_delegate_basic) {
1452 apr_table_add(r->err_headers_out, header_name,
1453 apr_pstrcat(r->pool, "Basic realm=\"", auth_name, "\"", NULL));
1460 ((use_krb4 && conf->krb_method_k4pass) || conf->krb_delegate_basic))
1461 ap_table_add(r->err_headers_out, header_name,
1462 ap_pstrcat(r->pool, "Basic realm=\"", auth_name, "\"", NULL));
1467 kerb_authenticate_user(request_rec *r)
1469 kerb_auth_config *conf =
1470 (kerb_auth_config *) ap_get_module_config(r->per_dir_config,
1472 const char *auth_type = NULL;
1473 const char *auth_line = NULL;
1474 const char *type = NULL;
1475 int use_krb5 = 0, use_krb4 = 0;
1477 static int last_return = HTTP_UNAUTHORIZED;
1478 char *negotiate_ret_value = NULL;
1480 /* get the type specified in .htaccess */
1481 type = ap_auth_type(r);
1483 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
1484 "kerb_authenticate_user entered with user %s and auth_type %s",
1485 (MK_USER)?MK_USER:"(NULL)",type?type:"(NULL)");
1487 if (type && strcasecmp(type, "Kerberos") == 0)
1488 use_krb5 = use_krb4 = 1;
1489 else if(type && strcasecmp(type, "KerberosV5") == 0)
1491 else if(type && strcasecmp(type, "KerberosV4") == 0)
1497 if (conf->krb_ssl_preauthentication) {
1498 const char *ssl_client_verify = ssl_var_lookup(r->pool, r->server,
1499 r->connection, r, "SSL_CLIENT_VERIFY");
1501 if (ssl_client_verify && strcmp(ssl_client_verify, "SUCCESS") == 0)
1506 /* get what the user sent us in the HTTP header */
1507 auth_line = MK_TABLE_GET(r->headers_in, (r->proxyreq == PROXYREQ_PROXY)
1508 ? "Proxy-Authorization"
1511 set_kerb_auth_headers(r, conf, use_krb4, use_krb5,
1512 (use_krb5) ? "\0" : NULL);
1513 return HTTP_UNAUTHORIZED;
1515 auth_type = ap_getword_white(r->pool, &auth_line);
1517 /* If we are delegating Basic to other modules, DECLINE the request */
1518 if (conf->krb_delegate_basic &&
1520 !conf->krb_method_k5pass &&
1523 !conf->krb_method_k4pass &&
1525 (strcasecmp(auth_type, "Basic") == 0))
1528 if (already_succeeded(r))
1531 ret = HTTP_UNAUTHORIZED;
1534 if (use_krb5 && conf->krb_method_gssapi &&
1535 strcasecmp(auth_type, MECH_NEGOTIATE) == 0) {
1536 ret = authenticate_user_gss(r, conf, auth_line, &negotiate_ret_value);
1537 } else if (use_krb5 && conf->krb_method_k5pass &&
1538 strcasecmp(auth_type, "Basic") == 0) {
1539 ret = authenticate_user_krb5pwd(r, conf, auth_line);
1544 if (ret == HTTP_UNAUTHORIZED && use_krb4 && conf->krb_method_k4pass &&
1545 strcasecmp(auth_type, "Basic") == 0)
1546 ret = authenticate_user_krb4pwd(r, conf, auth_line);
1549 if (ret == HTTP_UNAUTHORIZED)
1550 set_kerb_auth_headers(r, conf, use_krb4, use_krb5, negotiate_ret_value);
1552 /* XXX log_debug: if ret==OK, log(user XY authenticated) */
1559 have_rcache_type(const char *type)
1561 krb5_error_code ret;
1562 krb5_context context;
1566 memset(&id, 0, sizeof(id));
1568 ret = krb5_init_context(&context);
1572 ret = krb5_rc_resolve_type(context, &id, type);
1575 krb5_free_context(context);
1580 /***************************************************************************
1581 Module Setup/Configuration
1582 ***************************************************************************/
1583 #ifndef STANDARD20_MODULE_STUFF
1585 kerb_module_init(server_rec *dummy, pool *p)
1588 /* Suppress the MIT replay cache. Requires MIT Kerberos 1.4.0 or later.
1589 1.3.x are covered by the hack overiding the replay calls */
1590 if (getenv("KRB5RCACHETYPE") == NULL && have_rcache_type("none"))
1591 putenv(strdup("KRB5RCACHETYPE=none"));
1595 module MODULE_VAR_EXPORT auth_kerb_module = {
1596 STANDARD_MODULE_STUFF,
1597 kerb_module_init, /* module initializer */
1598 kerb_dir_create_config, /* per-directory config creator */
1599 NULL, /* per-directory config merger */
1600 NULL, /* per-server config creator */
1601 NULL, /* per-server config merger */
1602 kerb_auth_cmds, /* command table */
1603 NULL, /* [ 9] content handlers */
1604 NULL, /* [ 2] URI-to-filename translation */
1605 kerb_authenticate_user, /* [ 5] check/validate user_id */
1606 NULL, /* [ 6] check user_id is valid *here* */
1607 NULL, /* [ 4] check access by host address */
1608 NULL, /* [ 7] MIME type checker/setter */
1609 NULL, /* [ 8] fixups */
1610 NULL, /* [10] logger */
1611 NULL, /* [ 3] header parser */
1612 NULL, /* process initialization */
1613 NULL, /* process exit/cleanup */
1614 NULL /* [ 1] post read_request handling */
1616 ,NULL, /* EAPI: add_module */
1617 NULL, /* EAPI: remove_module */
1618 NULL, /* EAPI: rewrite_command */
1619 NULL /* EAPI: new_connection */
1624 kerb_init_handler(apr_pool_t *p, apr_pool_t *plog,
1625 apr_pool_t *ptemp, server_rec *s)
1627 ap_add_version_component(p, "mod_auth_kerb/" MODAUTHKERB_VERSION);
1629 /* Suppress the MIT replay cache. Requires MIT Kerberos 1.4.0 or later.
1630 1.3.x are covered by the hack overiding the replay calls */
1631 if (getenv("KRB5RCACHETYPE") == NULL && have_rcache_type("none"))
1632 putenv(strdup("KRB5RCACHETYPE=none"));
1639 kerb_register_hooks(apr_pool_t *p)
1641 ap_hook_post_config(kerb_init_handler, NULL, NULL, APR_HOOK_MIDDLE);
1642 ap_hook_check_user_id(kerb_authenticate_user, NULL, NULL, APR_HOOK_MIDDLE);
1645 module AP_MODULE_DECLARE_DATA auth_kerb_module =
1647 STANDARD20_MODULE_STUFF,
1648 kerb_dir_create_config, /* create per-dir conf structures */
1649 NULL, /* merge per-dir conf structures */
1650 NULL, /* create per-server conf structures */
1651 NULL, /* merge per-server conf structures */
1652 kerb_auth_cmds, /* table of configuration directives */
1653 kerb_register_hooks /* register hooks */