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) 2004-2005 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-rc6"
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 ap_null_cleanup NULL
70 #define ap_register_cleanup apr_pool_cleanup_register
72 #define ap_pstrdup apr_pstrdup
73 #define ap_pstrcat apr_pstrcat
74 #define ap_pcalloc apr_pcalloc
75 #define ap_psprintf apr_psprintf
77 #define ap_base64decode_len apr_base64_decode_len
78 #define ap_base64decode apr_base64_decode
79 #define ap_base64encode_len apr_base64_encode_len
80 #define ap_base64encode apr_base64_encode
82 #define ap_table_setn apr_table_setn
83 #define ap_table_add apr_table_add
85 #define ap_pstrchr_c strchr
86 #endif /* STANDARD20_MODULE_STUFF */
89 #define vsnprintf _vsnprintf
90 #define snprintf _snprintf
98 # include <gssapi/gssapi.h>
99 # include <gssapi/gssapi_generic.h>
100 # include <gssapi/gssapi_krb5.h>
101 # define GSS_C_NT_USER_NAME gss_nt_user_name
102 # define GSS_C_NT_HOSTBASED_SERVICE gss_nt_service_name
103 # define krb5_get_err_text(context,code) error_message(code)
105 #ifndef GSSAPI_SUPPORTS_SPNEGO
106 # include "spnegokrb5.h"
111 /* Prevent warning about closesocket redefinition (Apache's ap_config.h and
112 * MIT Kerberos' port-sockets.h both define it as close) */
117 #include <netdb.h> /* gethostbyname() */
121 /* should be HAVE_UNISTD_H instead */
125 #ifdef STANDARD20_MODULE_STUFF
126 module AP_MODULE_DECLARE_DATA auth_kerb_module;
128 module auth_kerb_module;
131 /***************************************************************************
132 Macros To Ease Compatibility
133 ***************************************************************************/
134 #ifdef STANDARD20_MODULE_STUFF
135 #define MK_POOL apr_pool_t
136 #define MK_TABLE_GET apr_table_get
137 #define MK_USER r->user
138 #define MK_AUTH_TYPE r->ap_auth_type
141 #define MK_TABLE_GET ap_table_get
142 #define MK_USER r->connection->user
143 #define MK_AUTH_TYPE r->connection->ap_auth_type
144 #define PROXYREQ_PROXY STD_PROXY
147 /***************************************************************************
148 Auth Configuration Structure
149 ***************************************************************************/
151 char *krb_auth_realms;
152 int krb_save_credentials;
154 const char *krb_service_name;
155 int krb_authoritative;
156 int krb_delegate_basic;
159 int krb_method_gssapi;
160 int krb_method_k5pass;
164 int krb_method_k4pass;
169 set_kerb_auth_headers(request_rec *r, const kerb_auth_config *conf,
170 int use_krb4, int use_krb5pwd, char *negotiate_ret_value);
173 krb5_save_realms(cmd_parms *cmd, void *sec, const char *arg);
175 #ifdef STANDARD20_MODULE_STUFF
176 #define command(name, func, var, type, usage) \
177 AP_INIT_ ## type (name, (void*) func, \
178 (void*)APR_OFFSETOF(kerb_auth_config, var), \
179 OR_AUTHCFG | RSRC_CONF, usage)
181 #define command(name, func, var, type, usage) \
183 (void*)XtOffsetOf(kerb_auth_config, var), \
184 OR_AUTHCFG | RSRC_CONF, type, usage }
187 static const command_rec kerb_auth_cmds[] = {
188 command("KrbAuthRealms", krb5_save_realms, krb_auth_realms,
189 RAW_ARGS, "Realms to attempt authentication against (can be multiple)."),
191 command("KrbAuthRealm", krb5_save_realms, krb_auth_realms,
192 RAW_ARGS, "Alias for KrbAuthRealms."),
194 command("KrbSaveCredentials", ap_set_flag_slot, krb_save_credentials,
195 FLAG, "Save and store credentials/tickets retrieved during auth."),
197 command("KrbVerifyKDC", ap_set_flag_slot, krb_verify_kdc,
198 FLAG, "Verify tickets against keytab to prevent KDC spoofing attacks."),
200 command("KrbServiceName", ap_set_string_slot, krb_service_name,
201 TAKE1, "Full or partial service name to be used by Apache for authentication."),
203 command("KrbAuthoritative", ap_set_flag_slot, krb_authoritative,
204 FLAG, "Set to 'off' to allow access control to be passed along to lower modules iff the UserID is not known to this module."),
206 command("KrbDelegateBasic", ap_set_flag_slot, krb_delegate_basic,
207 FLAG, "Always offer Basic authentication regardless of KrbMethodK5Pass and pass on authentication to lower modules if Basic headers arrive."),
210 command("Krb5Keytab", ap_set_file_slot, krb_5_keytab,
211 TAKE1, "Location of Kerberos V5 keytab file."),
213 command("KrbMethodNegotiate", ap_set_flag_slot, krb_method_gssapi,
214 FLAG, "Enable Negotiate authentication method."),
216 command("KrbMethodK5Passwd", ap_set_flag_slot, krb_method_k5pass,
217 FLAG, "Enable Kerberos V5 password authentication."),
221 command("Krb4Srvtab", ap_set_file_slot, krb_4_srvtab,
222 TAKE1, "Location of Kerberos V4 srvtab file."),
224 command("KrbMethodK4Passwd", ap_set_flag_slot, krb_method_k4pass,
225 FLAG, "Enable Kerberos V4 password authentication."),
233 mkstemp(char *template)
238 start = strlen(template) - 1;
239 while(template[start] == 'X') {
240 template[start] = '0' + val % 10;
247 fd = open(template, O_RDWR | O_CREAT | O_EXCL, 0600);
248 if(fd >= 0 || errno != EEXIST)
255 if(template[i] == '9' + 1)
257 if(template[i] <= 'z')
266 #if defined(KRB5) && !defined(HEIMDAL)
267 /* Needed to work around problems with replay caches */
268 #include "mit-internals.h"
270 /* This is our replacement krb5_rc_store function */
271 static krb5_error_code KRB5_LIB_FUNCTION
272 mod_auth_kerb_rc_store(krb5_context context, krb5_rcache rcache,
273 krb5_donot_replay_internal *donot_replay)
278 /* And this is the operations vector for our replay cache */
279 const krb5_rc_ops_internal mod_auth_kerb_rc_ops = {
286 mod_auth_kerb_rc_store,
288 krb5_rc_dfl_get_span,
289 krb5_rc_dfl_get_name,
295 /***************************************************************************
296 Auth Configuration Initialization
297 ***************************************************************************/
298 static void *kerb_dir_create_config(MK_POOL *p, char *d)
300 kerb_auth_config *rec;
302 rec = (kerb_auth_config *) ap_pcalloc(p, sizeof(kerb_auth_config));
303 ((kerb_auth_config *)rec)->krb_verify_kdc = 1;
304 ((kerb_auth_config *)rec)->krb_service_name = NULL;
305 ((kerb_auth_config *)rec)->krb_authoritative = 1;
306 ((kerb_auth_config *)rec)->krb_delegate_basic = 0;
308 ((kerb_auth_config *)rec)->krb_method_k5pass = 1;
309 ((kerb_auth_config *)rec)->krb_method_gssapi = 1;
312 ((kerb_auth_config *)rec)->krb_method_k4pass = 1;
318 krb5_save_realms(cmd_parms *cmd, void *vsec, const char *arg)
320 kerb_auth_config *sec = (kerb_auth_config *) vsec;
321 sec->krb_auth_realms= ap_pstrdup(cmd->pool, arg);
326 log_rerror(const char *file, int line, int level, int status,
327 const request_rec *r, const char *fmt, ...)
333 vsnprintf(errstr, sizeof(errstr), fmt, ap);
337 #ifdef STANDARD20_MODULE_STUFF
338 ap_log_rerror(file, line, level | APLOG_NOERRNO, status, r, "%s", errstr);
340 ap_log_rerror(file, line, level | APLOG_NOERRNO, r, "%s", errstr);
345 /***************************************************************************
346 Username/Password Validation for Krb4
347 ***************************************************************************/
349 verify_krb4_user(request_rec *r, char *name, char *instance, char *realm,
350 char *password, char *linstance, char *srvtab, int krb_verify_kdc)
356 const char *hostname;
359 char lrealm[REALM_SZ];
361 ret = krb_get_pw_in_tkt(name, instance, realm, "krbtgt", realm,
362 DEFAULT_TKT_LIFE, password);
364 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
365 "Cannot get krb4 ticket: krb_get_pw_in_tkt() failed: %s",
366 krb_get_err_text(ret));
373 hostname = ap_get_server_name(r);
375 hp = gethostbyname(hostname);
378 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
379 "Cannot verify krb4 ticket: gethostbyname() failed: %s",
383 memcpy(&addr, hp->h_addr, sizeof(addr));
385 phost = krb_get_phost((char *)hostname);
387 krb_get_lrealm(lrealm, 1);
389 ret = krb_mk_req(&ticket, linstance, phost, lrealm, 0);
391 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
392 "Cannot verify krb4 ticket: krb_mk_req() failed: %s",
393 krb_get_err_text(ret));
398 ret = krb_rd_req(&ticket, linstance, phost, addr, &authdata, srvtab);
400 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
401 "Cannot verify krb4 ticket: krb_rd_req() failed: %s",
402 krb_get_err_text(ret));
410 krb4_cache_cleanup(void *data)
412 char *tkt_file = (char *) data;
414 krb_set_tkt_string(tkt_file);
420 authenticate_user_krb4pwd(request_rec *r,
421 kerb_auth_config *conf,
422 const char *auth_line)
426 const char *sent_name;
429 char *tkt_file_p = NULL;
434 char lrealm[REALM_SZ];
435 int all_principals_unkown;
437 sent_pw = ap_pbase64decode(r->pool, auth_line);
438 sent_name = ap_getword (r->pool, &sent_pw, ':');
440 /* do not allow user to override realm setting of server */
441 if (ap_strchr_c(sent_name, '@')) {
442 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
443 "specifying realm in user name is prohibited");
444 return HTTP_UNAUTHORIZED;
447 sent_instance = strchr(sent_name, '.');
449 *sent_instance++ = '\0';
451 snprintf(tkt_file, sizeof(tkt_file), "/tmp/apache_tkt_XXXXXX");
452 fd = mkstemp(tkt_file);
454 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
455 "Cannot create krb4 ccache: mkstemp() failed: %s",
457 return HTTP_INTERNAL_SERVER_ERROR;
460 tkt_file_p = ap_pstrdup(r->pool, tkt_file);
461 ap_register_cleanup(r->pool, tkt_file_p,
462 krb4_cache_cleanup, ap_null_cleanup);
464 krb_set_tkt_string(tkt_file);
466 all_principals_unkown = 1;
467 realms = conf->krb_auth_realms;
469 memset(lrealm, 0, sizeof(lrealm));
472 realm = ap_getword_white(r->pool, &realms);
475 ret = krb_get_lrealm(lrealm, 1);
481 /* XXX conf->krb_service_name */
482 ret = verify_krb4_user(r, (char *)sent_name,
483 (sent_instance) ? sent_instance : "",
484 (char *)realm, (char *)sent_pw,
485 conf->krb_service_name,
486 conf->krb_4_srvtab, conf->krb_verify_kdc);
487 if (!conf->krb_authoritative && ret) {
488 /* if we're not authoritative, we allow authentication to pass on
489 * to another modules if (and only if) the user is not known to us */
490 if (all_principals_unkown && ret != KDC_PR_UNKNOWN)
491 all_principals_unkown = 0;
496 } while (realms && *realms);
499 /* XXX log only in the verify_krb4_user() call */
500 log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "Verifying krb4 password failed");
501 ret = (!conf->krb_authoritative && all_principals_unkown == 1 && ret == KDC_PR_UNKNOWN) ?
502 DECLINED : HTTP_UNAUTHORIZED;
506 user = ap_pstrdup(r->pool, sent_name);
508 user = ap_pstrcat(r->pool, user, ".", sent_instance, NULL);
509 user = ap_pstrcat(r->pool, user, "@", realm, NULL);
512 MK_AUTH_TYPE = "Basic";
513 ap_table_setn(r->subprocess_env, "KRBTKFILE", tkt_file_p);
515 if (!conf->krb_save_credentials)
516 krb4_cache_cleanup(tkt_file);
520 krb4_cache_cleanup(tkt_file);
529 /***************************************************************************
530 Username/Password Validation for Krb5
531 ***************************************************************************/
533 /* MIT kerberos uses replay cache checks even during credential verification
534 * (i.e. in krb5_verify_init_creds()), which is obviosuly useless. In order to
535 * avoid problems with multiple apache processes accessing the same rcache file
536 * we had to use this call instead, which is only a bit modified version of
537 * krb5_verify_init_creds() */
538 static krb5_error_code
539 verify_krb5_init_creds(request_rec *r, krb5_context context, krb5_creds *creds,
540 krb5_principal ap_req_server, krb5_keytab ap_req_keytab)
544 krb5_ccache local_ccache = NULL;
545 krb5_creds *new_creds = NULL;
546 krb5_auth_context auth_context = NULL;
547 krb5_keytab keytab = NULL;
550 memset(&req, 0, sizeof(req));
552 if (ap_req_keytab == NULL) {
553 ret = krb5_kt_default (context, &keytab);
557 keytab = ap_req_keytab;
559 ret = krb5_cc_resolve(context, "MEMORY:", &local_ccache);
561 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
562 "krb5_cc_resolve() failed when verifying KDC");
566 ret = krb5_cc_initialize(context, local_ccache, creds->client);
568 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
569 "krb5_cc_initialize() failed when verifying KDC");
573 ret = krb5_cc_store_cred (context, local_ccache, creds);
575 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
576 "krb5_cc_initialize() failed when verifying KDC");
580 ret = krb5_unparse_name(context, ap_req_server, &server_name);
582 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
583 "krb5_unparse_name() failed when verifying KDC");
586 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
587 "Trying to verify authenticity of KDC using principal %s", server_name);
590 if (!krb5_principal_compare (context, ap_req_server, creds->server)) {
591 krb5_creds match_cred;
593 memset (&match_cred, 0, sizeof(match_cred));
595 match_cred.client = creds->client;
596 match_cred.server = ap_req_server;
598 ret = krb5_get_credentials (context, 0, local_ccache,
599 &match_cred, &new_creds);
601 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
602 "krb5_get_credentials() failed when verifying KDC");
608 ret = krb5_mk_req_extended (context, &auth_context, 0, NULL, creds, &req);
610 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
611 "krb5_mk_req_extended() failed when verifying KDC");
615 krb5_auth_con_free (context, auth_context);
617 ret = krb5_auth_con_init(context, &auth_context);
619 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
620 "krb5_auth_con_init() failed when verifying KDC");
623 /* use KRB5_AUTH_CONTEXT_DO_SEQUENCE to skip replay cache checks */
624 krb5_auth_con_setflags(context, auth_context, KRB5_AUTH_CONTEXT_DO_SEQUENCE);
626 ret = krb5_rd_req (context, &auth_context, &req, ap_req_server,
629 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
630 "krb5_rd_req() failed when verifying KDC");
636 /* XXX Do I ever want to support Heimdal 0.4 ??? */
637 krb5_data_free(&req);
639 krb5_free_data_contents(context, &req);
642 krb5_auth_con_free (context, auth_context);
644 krb5_free_creds (context, new_creds);
645 if (ap_req_keytab == NULL && keytab)
646 krb5_kt_close (context, keytab);
648 krb5_cc_destroy (context, local_ccache);
653 /* Inspired by krb5_verify_user from Heimdal */
654 static krb5_error_code
655 verify_krb5_user(request_rec *r, krb5_context context, krb5_principal principal,
656 const char *password, krb5_principal server,
657 krb5_keytab keytab, int krb_verify_kdc, krb5_ccache *ccache)
661 krb5_ccache ret_ccache = NULL;
664 /* XXX error messages shouldn't be logged here (and in the while() loop in
665 * authenticate_user_krb5pwd() as weell), in order to avoid confusing log
666 * entries when using multiple realms */
668 memset(&creds, 0, sizeof(creds));
670 ret = krb5_unparse_name(context, principal, &name);
672 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
673 "Trying to get TGT for user %s", name);
677 ret = krb5_get_init_creds_password(context, &creds, principal,
678 (char *)password, NULL,
679 NULL, 0, NULL, NULL);
681 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
682 "krb5_get_init_creds_password() failed: %s",
683 krb5_get_err_text(context, ret));
691 krb5_get_default_realm(context, &realm);
692 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
693 "trying to verify password using key for %s/%s@%s",
694 service, ap_get_server_name(r), realm);
698 if (krb_verify_kdc &&
699 (ret = verify_krb5_init_creds(r, context, &creds, server, keytab))) {
700 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
701 "failed to verify krb5 credentials: %s",
702 krb5_get_err_text(context, ret));
706 ret = krb5_cc_resolve(context, "MEMORY:", &ret_ccache);
708 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
709 "generating new memory ccache failed: %s",
710 krb5_get_err_text(context, ret));
714 ret = krb5_cc_initialize(context, ret_ccache, principal);
716 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
717 "krb5_cc_initialize() failed: %s",
718 krb5_get_err_text(context, ret));
722 ret = krb5_cc_store_cred(context, ret_ccache, &creds);
724 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
725 "krb5_cc_store_cred() failed: %s",
726 krb5_get_err_text(context, ret));
729 *ccache = ret_ccache;
733 krb5_free_cred_contents(context, &creds);
735 krb5_cc_destroy(context, ret_ccache);
741 krb5_cache_cleanup(void *data)
743 krb5_context context;
745 krb5_error_code problem;
746 char *cache_name = (char *) data;
748 problem = krb5_init_context(&context);
750 /* ap_log_error(APLOG_MARK, APLOG_ERR, 0, NULL, "krb5_init_context() failed"); */
751 return HTTP_INTERNAL_SERVER_ERROR;
754 problem = krb5_cc_resolve(context, cache_name, &cache);
756 /* log_error(APLOG_MARK, APLOG_ERR, 0, NULL,
757 "krb5_cc_resolve() failed (%s: %s)",
758 cache_name, krb5_get_err_text(context, problem)); */
759 return HTTP_INTERNAL_SERVER_ERROR;
762 krb5_cc_destroy(context, cache);
763 krb5_free_context(context);
768 create_krb5_ccache(krb5_context kcontext,
770 kerb_auth_config *conf,
771 krb5_principal princ,
776 krb5_error_code problem;
778 krb5_ccache tmp_ccache = NULL;
780 ccname = ap_psprintf(r->pool, "FILE:%s/krb5cc_apache_XXXXXX", P_tmpdir);
781 fd = mkstemp(ccname + strlen("FILE:"));
783 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
784 "mkstemp() failed: %s", strerror(errno));
785 ret = HTTP_INTERNAL_SERVER_ERROR;
790 problem = krb5_cc_resolve(kcontext, ccname, &tmp_ccache);
792 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
793 "krb5_cc_resolve() failed: %s",
794 krb5_get_err_text(kcontext, problem));
795 ret = HTTP_INTERNAL_SERVER_ERROR;
800 problem = krb5_cc_initialize(kcontext, tmp_ccache, princ);
802 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
803 "Cannot initialize krb5 ccache %s: krb5_cc_initialize() failed: %s",
804 ccname, krb5_get_err_text(kcontext, problem));
805 ret = HTTP_INTERNAL_SERVER_ERROR;
809 ap_table_setn(r->subprocess_env, "KRB5CCNAME", ccname);
810 ap_register_cleanup(r->pool, ccname,
811 krb5_cache_cleanup, ap_null_cleanup);
813 *ccache = tmp_ccache;
820 krb5_cc_destroy(kcontext, tmp_ccache);
826 store_krb5_creds(krb5_context kcontext,
828 kerb_auth_config *conf,
829 krb5_ccache delegated_cred)
832 krb5_error_code problem;
833 krb5_principal princ;
837 problem = krb5_cc_get_principal(kcontext, delegated_cred, &princ);
839 snprintf(errstr, sizeof(errstr), "krb5_cc_get_principal() failed: %s",
840 krb5_get_err_text(kcontext, problem));
841 return HTTP_INTERNAL_SERVER_ERROR;
844 ret = create_krb5_ccache(kcontext, r, conf, princ, &ccache);
846 krb5_free_principal(kcontext, princ);
851 problem = krb5_cc_copy_cache(kcontext, delegated_cred, ccache);
853 problem = krb5_cc_copy_creds(kcontext, delegated_cred, ccache);
855 krb5_free_principal(kcontext, princ);
857 snprintf(errstr, sizeof(errstr), "Failed to store credentials: %s",
858 krb5_get_err_text(kcontext, problem));
859 krb5_cc_destroy(kcontext, ccache);
860 return HTTP_INTERNAL_SERVER_ERROR;
863 krb5_cc_close(kcontext, ccache);
869 authenticate_user_krb5pwd(request_rec *r,
870 kerb_auth_config *conf,
871 const char *auth_line)
873 const char *sent_pw = NULL;
874 const char *sent_name = NULL;
875 const char *realms = NULL;
876 const char *realm = NULL;
877 krb5_context kcontext = NULL;
878 krb5_error_code code;
879 krb5_principal client = NULL;
880 krb5_principal server = NULL;
881 krb5_ccache ccache = NULL;
882 krb5_keytab keytab = NULL;
885 int all_principals_unkown;
888 code = krb5_init_context(&kcontext);
890 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
891 "Cannot initialize Kerberos5 context (%d)", code);
892 return HTTP_INTERNAL_SERVER_ERROR;
895 sent_pw = ap_pbase64decode(r->pool, auth_line);
896 sent_name = ap_getword (r->pool, &sent_pw, ':');
898 if (sent_pw == NULL || *sent_pw == '\0') {
899 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
900 "empty passwords are not accepted");
901 ret = HTTP_UNAUTHORIZED;
905 if (conf->krb_5_keytab)
906 krb5_kt_resolve(kcontext, conf->krb_5_keytab, &keytab);
908 if (conf->krb_service_name && strchr(conf->krb_service_name, '/') != NULL)
909 ret = krb5_parse_name (kcontext, conf->krb_service_name, &server);
911 ret = krb5_sname_to_principal(kcontext, ap_get_server_name(r),
912 (conf->krb_service_name) ? conf->krb_service_name : SERVICE_NAME,
913 KRB5_NT_SRV_HST, &server);
916 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
917 "Error parsing server name (%s): %s",
918 (conf->krb_service_name) ? conf->krb_service_name : SERVICE_NAME,
919 krb5_get_err_text(kcontext, ret));
920 ret = HTTP_UNAUTHORIZED;
924 code = krb5_unparse_name(kcontext, server, &name);
926 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
927 "krb5_unparse_name() failed: %s",
928 krb5_get_err_text(kcontext, code));
929 ret = HTTP_UNAUTHORIZED;
932 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "Using %s as server principal for password verification", name);
936 p = strchr(sent_name, '@');
939 if (conf->krb_auth_realms && !ap_find_token(r->pool, conf->krb_auth_realms, p)) {
940 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
941 "Specified realm `%s' not allowed by configuration", p);
942 ret = HTTP_UNAUTHORIZED;
947 realms = (p) ? p : conf->krb_auth_realms;
948 all_principals_unkown = 1;
950 name = (char *) sent_name;
951 if (realms && (realm = ap_getword_white(r->pool, &realms)))
952 name = ap_psprintf(r->pool, "%s@%s", sent_name, realm);
955 krb5_free_principal(kcontext, client);
959 code = krb5_parse_name(kcontext, name, &client);
961 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
962 "krb5_parse_name() failed: %s",
963 krb5_get_err_text(kcontext, code));
967 code = verify_krb5_user(r, kcontext, client, sent_pw,
968 server, keytab, conf->krb_verify_kdc, &ccache);
969 if (!conf->krb_authoritative && code) {
970 /* if we're not authoritative, we allow authentication to pass on
971 * to another modules if (and only if) the user is not known to us */
972 if (all_principals_unkown && code != KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN)
973 all_principals_unkown = 0;
979 /* ap_getword_white() used above shifts the parameter, so it's not
980 needed to touch the realms variable */
981 } while (realms && *realms);
983 memset((char *)sent_pw, 0, strlen(sent_pw));
986 if (!conf->krb_authoritative && all_principals_unkown == 1 && code == KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN)
989 ret = HTTP_UNAUTHORIZED;
994 code = krb5_unparse_name(kcontext, client, &name);
996 log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "krb5_unparse_name() failed: %s",
997 krb5_get_err_text(kcontext, code));
998 ret = HTTP_UNAUTHORIZED;
1001 MK_USER = ap_pstrdup (r->pool, name);
1002 MK_AUTH_TYPE = "Basic";
1005 if (conf->krb_save_credentials)
1006 store_krb5_creds(kcontext, r, conf, ccache);
1011 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
1012 "kerb_authenticate_user_krb5pwd ret=%d user=%s authtype=%s",
1013 ret, (MK_USER)?MK_USER:"(NULL)", (MK_AUTH_TYPE)?MK_AUTH_TYPE:"(NULL)");
1015 krb5_free_principal(kcontext, client);
1017 krb5_free_principal(kcontext, server);
1019 krb5_cc_destroy(kcontext, ccache);
1021 krb5_kt_close(kcontext, keytab);
1022 krb5_free_context(kcontext);
1027 /*********************************************************************
1028 * GSSAPI Authentication
1029 ********************************************************************/
1032 get_gss_error(MK_POOL *p, OM_uint32 err_maj, OM_uint32 err_min, char *prefix)
1034 OM_uint32 maj_stat, min_stat;
1035 OM_uint32 msg_ctx = 0;
1036 gss_buffer_desc status_string;
1039 err_msg = ap_pstrdup(p, prefix);
1041 maj_stat = gss_display_status (&min_stat,
1047 if (GSS_ERROR(maj_stat))
1049 err_msg = ap_pstrcat(p, err_msg, ": ", (char*) status_string.value, NULL);
1050 gss_release_buffer(&min_stat, &status_string);
1052 maj_stat = gss_display_status (&min_stat,
1058 if (!GSS_ERROR(maj_stat)) {
1059 err_msg = ap_pstrcat(p, err_msg,
1060 " (", (char*) status_string.value, ")", NULL);
1061 gss_release_buffer(&min_stat, &status_string);
1063 } while (!GSS_ERROR(maj_stat) && msg_ctx != 0);
1069 store_gss_creds(request_rec *r, kerb_auth_config *conf, char *princ_name,
1070 gss_cred_id_t delegated_cred)
1072 OM_uint32 maj_stat, min_stat;
1073 krb5_principal princ = NULL;
1074 krb5_ccache ccache = NULL;
1075 krb5_error_code problem;
1076 krb5_context context;
1077 int ret = HTTP_INTERNAL_SERVER_ERROR;
1079 problem = krb5_init_context(&context);
1081 log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "Cannot initialize krb5 context");
1082 return HTTP_INTERNAL_SERVER_ERROR;
1085 problem = krb5_parse_name(context, princ_name, &princ);
1087 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1088 "Cannot parse delegated username (%s)", krb5_get_err_text(context, problem));
1092 problem = create_krb5_ccache(context, r, conf, princ, &ccache);
1094 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1095 "Cannot create krb5 ccache (%s)", krb5_get_err_text(context, problem));
1099 maj_stat = gss_krb5_copy_ccache(&min_stat, delegated_cred, ccache);
1100 if (GSS_ERROR(maj_stat)) {
1101 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1102 "Cannot store delegated credential (%s)",
1103 get_gss_error(r->pool, maj_stat, min_stat, "gss_krb5_copy_ccache"));
1107 krb5_cc_close(context, ccache);
1113 krb5_free_principal(context, princ);
1115 krb5_cc_destroy(context, ccache);
1116 krb5_free_context(context);
1121 get_gss_creds(request_rec *r,
1122 kerb_auth_config *conf,
1123 gss_cred_id_t *server_creds)
1125 gss_buffer_desc token = GSS_C_EMPTY_BUFFER;
1126 OM_uint32 major_status, minor_status, minor_status2;
1127 gss_name_t server_name = GSS_C_NO_NAME;
1129 int have_server_princ;
1131 have_server_princ = conf->krb_service_name && strchr(conf->krb_service_name, '/') != NULL;
1132 if (have_server_princ)
1133 strncpy(buf, conf->krb_service_name, sizeof(buf));
1135 snprintf(buf, sizeof(buf), "%s@%s",
1136 (conf->krb_service_name) ? conf->krb_service_name : SERVICE_NAME,
1137 ap_get_server_name(r));
1140 token.length = strlen(buf) + 1;
1142 major_status = gss_import_name(&minor_status, &token,
1143 (have_server_princ) ? GSS_KRB5_NT_PRINCIPAL_NAME : GSS_C_NT_HOSTBASED_SERVICE,
1145 memset(&token, 0, sizeof(token));
1146 if (GSS_ERROR(major_status)) {
1147 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1148 "%s", get_gss_error(r->pool, major_status, minor_status,
1149 "gss_import_name() failed"));
1150 return HTTP_INTERNAL_SERVER_ERROR;
1153 major_status = gss_display_name(&minor_status, server_name, &token, NULL);
1154 if (GSS_ERROR(major_status)) {
1155 /* Perhaps we could just ignore this error but it's safer to give up now,
1157 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1158 "%s", get_gss_error(r->pool, major_status, minor_status,
1159 "gss_display_name() failed"));
1160 return HTTP_INTERNAL_SERVER_ERROR;
1163 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "Acquiring creds for %s",
1165 gss_release_buffer(&minor_status, &token);
1167 major_status = gss_acquire_cred(&minor_status, server_name, GSS_C_INDEFINITE,
1168 GSS_C_NO_OID_SET, GSS_C_ACCEPT,
1169 server_creds, NULL, NULL);
1170 gss_release_name(&minor_status2, &server_name);
1171 if (GSS_ERROR(major_status)) {
1172 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1173 "%s", get_gss_error(r->pool, major_status, minor_status,
1174 "gss_acquire_cred() failed"));
1175 return HTTP_INTERNAL_SERVER_ERROR;
1180 * With MIT Kerberos 5 1.3.x the gss_cred_id_t is the same as
1181 * krb5_gss_cred_id_t and krb5_gss_cred_id_rec contains a pointer to
1183 * This allows us to override the replay cache function vector with
1185 * Note that this is a dirty hack to get things working and there may
1186 * well be unknown side-effects.
1189 krb5_gss_cred_id_t gss_creds = (krb5_gss_cred_id_t) *server_creds;
1191 if (gss_creds && gss_creds->rcache && gss_creds->rcache->ops &&
1192 gss_creds->rcache->ops->type &&
1193 memcmp(gss_creds->rcache->ops->type, "dfl", 3) == 0)
1194 /* Override the rcache operations */
1195 gss_creds->rcache->ops = &mod_auth_kerb_rc_ops;
1203 cmp_gss_type(gss_buffer_t token, gss_OID oid)
1208 if (token->length == 0)
1209 return GSS_S_DEFECTIVE_TOKEN;
1213 return GSS_S_DEFECTIVE_TOKEN;
1216 if ((len & 0x7f) > 4)
1217 return GSS_S_DEFECTIVE_TOKEN;
1221 return GSS_S_DEFECTIVE_TOKEN;
1223 if (((OM_uint32) *p++) != oid->length)
1224 return GSS_S_DEFECTIVE_TOKEN;
1226 return memcmp(p, oid->elements, oid->length);
1230 authenticate_user_gss(request_rec *r, kerb_auth_config *conf,
1231 const char *auth_line, char **negotiate_ret_value)
1233 OM_uint32 major_status, minor_status, minor_status2;
1234 gss_buffer_desc input_token = GSS_C_EMPTY_BUFFER;
1235 gss_buffer_desc output_token = GSS_C_EMPTY_BUFFER;
1236 const char *auth_param = NULL;
1238 gss_name_t client_name = GSS_C_NO_NAME;
1239 gss_cred_id_t delegated_cred = GSS_C_NO_CREDENTIAL;
1240 OM_uint32 (KRB5_LIB_FUNCTION *accept_sec_token)
1241 (OM_uint32 *, gss_ctx_id_t *, const gss_cred_id_t,
1242 const gss_buffer_t, const gss_channel_bindings_t,
1243 gss_name_t *, gss_OID *, gss_buffer_t, OM_uint32 *,
1244 OM_uint32 *, gss_cred_id_t *);
1245 gss_OID_desc spnego_oid;
1246 gss_ctx_id_t context = GSS_C_NO_CONTEXT;
1247 gss_cred_id_t server_creds = GSS_C_NO_CREDENTIAL;
1249 *negotiate_ret_value = "\0";
1251 spnego_oid.length = 6;
1252 spnego_oid.elements = (void *)"\x2b\x06\x01\x05\x05\x02";
1254 if (conf->krb_5_keytab) {
1256 /* we don't use the ap_* calls here, since the string passed to putenv()
1257 * will become part of the enviroment and shouldn't be free()ed by apache
1259 ktname = malloc(strlen("KRB5_KTNAME=") + strlen(conf->krb_5_keytab) + 1);
1260 if (ktname == NULL) {
1261 log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "malloc() failed: not enough memory");
1262 ret = HTTP_INTERNAL_SERVER_ERROR;
1265 sprintf(ktname, "KRB5_KTNAME=%s", conf->krb_5_keytab);
1268 /* Seems to be also supported by latest MIT */
1269 gsskrb5_register_acceptor_identity(conf->krb_5_keytab);
1273 ret = get_gss_creds(r, conf, &server_creds);
1277 /* ap_getword() shifts parameter */
1278 auth_param = ap_getword_white(r->pool, &auth_line);
1279 if (auth_param == NULL) {
1280 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1281 "No Authorization parameter in request from client");
1282 ret = HTTP_UNAUTHORIZED;
1286 input_token.length = ap_base64decode_len(auth_param) + 1;
1287 input_token.value = ap_pcalloc(r->connection->pool, input_token.length);
1288 if (input_token.value == NULL) {
1289 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1290 "ap_pcalloc() failed (not enough memory)");
1291 ret = HTTP_INTERNAL_SERVER_ERROR;
1294 input_token.length = ap_base64decode(input_token.value, auth_param);
1296 #ifdef GSSAPI_SUPPORTS_SPNEGO
1297 accept_sec_token = gss_accept_sec_context;
1299 accept_sec_token = (cmp_gss_type(&input_token, &spnego_oid) == 0) ?
1300 gss_accept_sec_context_spnego : gss_accept_sec_context;
1303 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "Verifying client data using %s",
1304 (accept_sec_token == gss_accept_sec_context)
1306 : "SPNEGO GSS-API");
1308 major_status = accept_sec_token(&minor_status,
1312 GSS_C_NO_CHANNEL_BINDINGS,
1319 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
1320 "Verification returned code %d", major_status);
1321 if (output_token.length) {
1325 len = ap_base64encode_len(output_token.length) + 1;
1326 token = ap_pcalloc(r->connection->pool, len + 1);
1327 if (token == NULL) {
1328 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1329 "ap_pcalloc() failed (not enough memory)");
1330 ret = HTTP_INTERNAL_SERVER_ERROR;
1331 gss_release_buffer(&minor_status2, &output_token);
1334 ap_base64encode(token, output_token.value, output_token.length);
1336 *negotiate_ret_value = token;
1337 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
1338 "GSS-API token of length %d bytes will be sent back",
1339 output_token.length);
1340 gss_release_buffer(&minor_status2, &output_token);
1341 set_kerb_auth_headers(r, conf, 0, 0, *negotiate_ret_value);
1344 if (GSS_ERROR(major_status)) {
1345 if (input_token.length > 7 && memcmp(input_token.value, "NTLMSSP", 7) == 0)
1346 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
1347 "Warning: received token seems to be NTLM, which isn't supported by the Kerberos module. Check your IE configuration.");
1349 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1350 "%s", get_gss_error(r->pool, major_status, minor_status,
1351 "gss_accept_sec_context() failed"));
1352 /* Don't offer the Negotiate method again if call to GSS layer failed */
1353 *negotiate_ret_value = NULL;
1354 ret = HTTP_UNAUTHORIZED;
1359 /* This is a _Kerberos_ module so multiple authentication rounds aren't
1360 * supported. If we wanted a generic GSS authentication we would have to do
1361 * some magic with exporting context etc. */
1362 if (major_status & GSS_S_CONTINUE_NEEDED) {
1363 ret = HTTP_UNAUTHORIZED;
1368 major_status = gss_display_name(&minor_status, client_name, &output_token, NULL);
1369 gss_release_name(&minor_status, &client_name);
1370 if (GSS_ERROR(major_status)) {
1371 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1372 "%s", get_gss_error(r->pool, major_status, minor_status,
1373 "gss_export_name() failed"));
1374 ret = HTTP_INTERNAL_SERVER_ERROR;
1378 MK_AUTH_TYPE = MECH_NEGOTIATE;
1379 MK_USER = ap_pstrdup(r->pool, output_token.value);
1381 if (conf->krb_save_credentials && delegated_cred != GSS_C_NO_CREDENTIAL)
1382 store_gss_creds(r, conf, (char *)output_token.value, delegated_cred);
1384 gss_release_buffer(&minor_status, &output_token);
1390 gss_release_cred(&minor_status, &delegated_cred);
1392 if (output_token.length)
1393 gss_release_buffer(&minor_status, &output_token);
1395 if (client_name != GSS_C_NO_NAME)
1396 gss_release_name(&minor_status, &client_name);
1398 if (server_creds != GSS_C_NO_CREDENTIAL)
1399 gss_release_cred(&minor_status, &server_creds);
1401 if (context != GSS_C_NO_CONTEXT)
1402 gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER);
1409 already_succeeded(request_rec *r)
1411 if (ap_is_initial_req(r) || MK_AUTH_TYPE == NULL)
1413 if (strcmp(MK_AUTH_TYPE, MECH_NEGOTIATE) ||
1414 (strcmp(MK_AUTH_TYPE, "Basic") && strchr(MK_USER, '@')))
1420 set_kerb_auth_headers(request_rec *r, const kerb_auth_config *conf,
1421 int use_krb4, int use_krb5pwd, char *negotiate_ret_value)
1423 const char *auth_name = NULL;
1425 char *negoauth_param;
1426 const char *header_name =
1427 (r->proxyreq == PROXYREQ_PROXY) ? "Proxy-Authenticate" : "WWW-Authenticate";
1429 /* get the user realm specified in .htaccess */
1430 auth_name = ap_auth_name(r);
1432 /* XXX should the WWW-Authenticate header be cleared first?
1433 * apache in the proxy mode should retain client's authN headers? */
1435 if (negotiate_ret_value != NULL && conf->krb_method_gssapi) {
1436 negoauth_param = (*negotiate_ret_value == '\0') ? MECH_NEGOTIATE :
1437 ap_pstrcat(r->pool, MECH_NEGOTIATE " ", negotiate_ret_value, NULL);
1438 ap_table_add(r->err_headers_out, header_name, negoauth_param);
1440 if ((use_krb5pwd && conf->krb_method_k5pass) || conf->krb_delegate_basic) {
1441 ap_table_add(r->err_headers_out, header_name,
1442 ap_pstrcat(r->pool, "Basic realm=\"", auth_name, "\"", NULL));
1449 ((use_krb4 && conf->krb_method_k4pass) || conf->krb_delegate_basic))
1450 ap_table_add(r->err_headers_out, header_name,
1451 ap_pstrcat(r->pool, "Basic realm=\"", auth_name, "\"", NULL));
1456 kerb_authenticate_user(request_rec *r)
1458 kerb_auth_config *conf =
1459 (kerb_auth_config *) ap_get_module_config(r->per_dir_config,
1461 const char *auth_type = NULL;
1462 const char *auth_line = NULL;
1463 const char *type = NULL;
1464 int use_krb5 = 0, use_krb4 = 0;
1466 static int last_return = HTTP_UNAUTHORIZED;
1467 char *negotiate_ret_value = NULL;
1469 /* get the type specified in .htaccess */
1470 type = ap_auth_type(r);
1472 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
1473 "kerb_authenticate_user entered with user %s and auth_type %s",
1474 (MK_USER)?MK_USER:"(NULL)",type?type:"(NULL)");
1476 if (type && strcasecmp(type, "Kerberos") == 0)
1477 use_krb5 = use_krb4 = 1;
1478 else if(type && strcasecmp(type, "KerberosV5") == 0)
1480 else if(type && strcasecmp(type, "KerberosV4") == 0)
1485 /* get what the user sent us in the HTTP header */
1486 auth_line = MK_TABLE_GET(r->headers_in, (r->proxyreq == PROXYREQ_PROXY)
1487 ? "Proxy-Authorization"
1490 set_kerb_auth_headers(r, conf, use_krb4, use_krb5,
1491 (use_krb5) ? "\0" : NULL);
1492 return HTTP_UNAUTHORIZED;
1494 auth_type = ap_getword_white(r->pool, &auth_line);
1496 /* If we are delegating Basic to other modules, DECLINE the request */
1497 if (conf->krb_delegate_basic &&
1499 !conf->krb_method_k5pass &&
1502 !conf->krb_method_k4pass &&
1504 (strcasecmp(auth_type, "Basic") == 0))
1507 if (already_succeeded(r))
1510 ret = HTTP_UNAUTHORIZED;
1513 if (use_krb5 && conf->krb_method_gssapi &&
1514 strcasecmp(auth_type, MECH_NEGOTIATE) == 0) {
1515 ret = authenticate_user_gss(r, conf, auth_line, &negotiate_ret_value);
1516 } else if (use_krb5 && conf->krb_method_k5pass &&
1517 strcasecmp(auth_type, "Basic") == 0) {
1518 ret = authenticate_user_krb5pwd(r, conf, auth_line);
1523 if (ret == HTTP_UNAUTHORIZED && use_krb4 && conf->krb_method_k4pass &&
1524 strcasecmp(auth_type, "Basic") == 0)
1525 ret = authenticate_user_krb4pwd(r, conf, auth_line);
1528 if (ret == HTTP_UNAUTHORIZED)
1529 set_kerb_auth_headers(r, conf, use_krb4, use_krb5, negotiate_ret_value);
1531 /* XXX log_debug: if ret==OK, log(user XY authenticated) */
1538 /***************************************************************************
1539 Module Setup/Configuration
1540 ***************************************************************************/
1541 #ifndef STANDARD20_MODULE_STUFF
1542 module MODULE_VAR_EXPORT auth_kerb_module = {
1543 STANDARD_MODULE_STUFF,
1544 NULL, /* module initializer */
1545 kerb_dir_create_config, /* per-directory config creator */
1546 NULL, /* per-directory config merger */
1547 NULL, /* per-server config creator */
1548 NULL, /* per-server config merger */
1549 kerb_auth_cmds, /* command table */
1550 NULL, /* [ 9] content handlers */
1551 NULL, /* [ 2] URI-to-filename translation */
1552 kerb_authenticate_user, /* [ 5] check/validate user_id */
1553 NULL, /* [ 6] check user_id is valid *here* */
1554 NULL, /* [ 4] check access by host address */
1555 NULL, /* [ 7] MIME type checker/setter */
1556 NULL, /* [ 8] fixups */
1557 NULL, /* [10] logger */
1558 NULL, /* [ 3] header parser */
1559 NULL, /* process initialization */
1560 NULL, /* process exit/cleanup */
1561 NULL /* [ 1] post read_request handling */
1563 ,NULL, /* EAPI: add_module */
1564 NULL, /* EAPI: remove_module */
1565 NULL, /* EAPI: rewrite_command */
1566 NULL /* EAPI: new_connection */
1571 kerb_init_handler(apr_pool_t *p, apr_pool_t *plog,
1572 apr_pool_t *ptemp, server_rec *s)
1574 ap_add_version_component(p, "mod_auth_kerb/" MODAUTHKERB_VERSION);
1579 kerb_register_hooks(apr_pool_t *p)
1581 ap_hook_post_config(kerb_init_handler, NULL, NULL, APR_HOOK_MIDDLE);
1582 ap_hook_check_user_id(kerb_authenticate_user, NULL, NULL, APR_HOOK_MIDDLE);
1585 module AP_MODULE_DECLARE_DATA auth_kerb_module =
1587 STANDARD20_MODULE_STUFF,
1588 kerb_dir_create_config, /* create per-dir conf structures */
1589 NULL, /* merge per-dir conf structures */
1590 NULL, /* create per-server conf structures */
1591 NULL, /* merge per-server conf structures */
1592 kerb_auth_cmds, /* table of configuration directives */
1593 kerb_register_hooks /* register hooks */