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 GSS_KRB5_NT_PRINCIPAL_NAME gss_nt_krb5_name
99 # define krb5_get_err_text(context,code) error_message(code)
101 #ifndef GSSAPI_SUPPORTS_SPNEGO
102 # include "spnegokrb5.h"
107 /* Prevent warning about closesocket redefinition (Apache's ap_config.h and
108 * MIT Kerberos' port-sockets.h both define it as close) */
113 #include <netdb.h> /* gethostbyname() */
117 /* should be HAVE_UNISTD_H instead */
121 #ifdef STANDARD20_MODULE_STUFF
122 module AP_MODULE_DECLARE_DATA auth_kerb_module;
124 module auth_kerb_module;
127 /***************************************************************************
128 Macros To Ease Compatibility
129 ***************************************************************************/
130 #ifdef STANDARD20_MODULE_STUFF
131 #define MK_POOL apr_pool_t
132 #define MK_TABLE_GET apr_table_get
133 #define MK_USER r->user
134 #define MK_AUTH_TYPE r->ap_auth_type
137 #define MK_TABLE_GET ap_table_get
138 #define MK_USER r->connection->user
139 #define MK_AUTH_TYPE r->connection->ap_auth_type
140 #define PROXYREQ_PROXY STD_PROXY
143 /***************************************************************************
144 Auth Configuration Structure
145 ***************************************************************************/
147 char *krb_auth_realms;
148 int krb_save_credentials;
150 const char *krb_service_name;
151 int krb_authoritative;
152 int krb_delegate_basic;
154 int krb_ssl_preauthentication;
158 int krb_method_gssapi;
159 int krb_method_k5pass;
163 int krb_method_k4pass;
168 set_kerb_auth_headers(request_rec *r, const kerb_auth_config *conf,
169 int use_krb4, int use_krb5pwd, char *negotiate_ret_value);
172 krb5_save_realms(cmd_parms *cmd, void *sec, const char *arg);
174 #ifdef STANDARD20_MODULE_STUFF
175 #define command(name, func, var, type, usage) \
176 AP_INIT_ ## type (name, (void*) func, \
177 (void*)APR_OFFSETOF(kerb_auth_config, var), \
178 OR_AUTHCFG | RSRC_CONF, usage)
180 #define command(name, func, var, type, usage) \
182 (void*)XtOffsetOf(kerb_auth_config, var), \
183 OR_AUTHCFG | RSRC_CONF, type, usage }
186 static const command_rec kerb_auth_cmds[] = {
187 command("KrbAuthRealms", krb5_save_realms, krb_auth_realms,
188 RAW_ARGS, "Realms to attempt authentication against (can be multiple)."),
190 command("KrbAuthRealm", krb5_save_realms, krb_auth_realms,
191 RAW_ARGS, "Alias for KrbAuthRealms."),
193 command("KrbSaveCredentials", ap_set_flag_slot, krb_save_credentials,
194 FLAG, "Save and store credentials/tickets retrieved during auth."),
196 command("KrbVerifyKDC", ap_set_flag_slot, krb_verify_kdc,
197 FLAG, "Verify tickets against keytab to prevent KDC spoofing attacks."),
199 command("KrbServiceName", ap_set_string_slot, krb_service_name,
200 TAKE1, "Full or partial service name to be used by Apache for authentication."),
202 command("KrbAuthoritative", ap_set_flag_slot, krb_authoritative,
203 FLAG, "Set to 'off' to allow access control to be passed along to lower modules iff the UserID is not known to this module."),
205 command("KrbDelegateBasic", ap_set_flag_slot, krb_delegate_basic,
206 FLAG, "Always offer Basic authentication regardless of KrbMethodK5Pass and pass on authentication to lower modules if Basic headers arrive."),
209 command("KrbEnableSSLPreauthentication", ap_set_flag_slot, krb_ssl_preauthentication,
210 FLAG, "Don't do Kerberos authentication if the user is already authenticated using SSL and her client certificate."),
214 command("Krb5Keytab", ap_set_file_slot, krb_5_keytab,
215 TAKE1, "Location of Kerberos V5 keytab file."),
217 command("KrbMethodNegotiate", ap_set_flag_slot, krb_method_gssapi,
218 FLAG, "Enable Negotiate authentication method."),
220 command("KrbMethodK5Passwd", ap_set_flag_slot, krb_method_k5pass,
221 FLAG, "Enable Kerberos V5 password authentication."),
225 command("Krb4Srvtab", ap_set_file_slot, krb_4_srvtab,
226 TAKE1, "Location of Kerberos V4 srvtab file."),
228 command("KrbMethodK4Passwd", ap_set_flag_slot, krb_method_k4pass,
229 FLAG, "Enable Kerberos V4 password authentication."),
237 mkstemp(char *template)
242 start = strlen(template) - 1;
243 while(template[start] == 'X') {
244 template[start] = '0' + val % 10;
251 fd = open(template, O_RDWR | O_CREAT | O_EXCL, 0600);
252 if(fd >= 0 || errno != EEXIST)
259 if(template[i] == '9' + 1)
261 if(template[i] <= 'z')
270 #if defined(KRB5) && !defined(HEIMDAL)
271 /* Needed to work around problems with replay caches */
272 #include "mit-internals.h"
274 /* This is our replacement krb5_rc_store function */
275 static krb5_error_code KRB5_LIB_FUNCTION
276 mod_auth_kerb_rc_store(krb5_context context, krb5_rcache rcache,
277 krb5_donot_replay_internal *donot_replay)
282 /* And this is the operations vector for our replay cache */
283 const krb5_rc_ops_internal mod_auth_kerb_rc_ops = {
290 mod_auth_kerb_rc_store,
292 krb5_rc_dfl_get_span,
293 krb5_rc_dfl_get_name,
299 /***************************************************************************
300 Auth Configuration Initialization
301 ***************************************************************************/
302 static void *kerb_dir_create_config(MK_POOL *p, char *d)
304 kerb_auth_config *rec;
306 rec = (kerb_auth_config *) apr_pcalloc(p, sizeof(kerb_auth_config));
307 ((kerb_auth_config *)rec)->krb_verify_kdc = 1;
308 ((kerb_auth_config *)rec)->krb_service_name = NULL;
309 ((kerb_auth_config *)rec)->krb_authoritative = 1;
310 ((kerb_auth_config *)rec)->krb_delegate_basic = 0;
312 ((kerb_auth_config *)rec)->krb_ssl_preauthentication = 0;
315 ((kerb_auth_config *)rec)->krb_method_k5pass = 1;
316 ((kerb_auth_config *)rec)->krb_method_gssapi = 1;
319 ((kerb_auth_config *)rec)->krb_method_k4pass = 1;
325 krb5_save_realms(cmd_parms *cmd, void *vsec, const char *arg)
327 kerb_auth_config *sec = (kerb_auth_config *) vsec;
328 sec->krb_auth_realms= apr_pstrdup(cmd->pool, arg);
333 log_rerror(const char *file, int line, int level, int status,
334 const request_rec *r, const char *fmt, ...)
340 vsnprintf(errstr, sizeof(errstr), fmt, ap);
344 #ifdef STANDARD20_MODULE_STUFF
345 ap_log_rerror(file, line, level | APLOG_NOERRNO, status, r, "%s", errstr);
347 ap_log_rerror(file, line, level | APLOG_NOERRNO, r, "%s", errstr);
352 /***************************************************************************
353 Username/Password Validation for Krb4
354 ***************************************************************************/
356 verify_krb4_user(request_rec *r, char *name, char *instance, char *realm,
357 char *password, char *linstance, char *srvtab, int krb_verify_kdc)
363 const char *hostname;
366 char lrealm[REALM_SZ];
368 ret = krb_get_pw_in_tkt(name, instance, realm, "krbtgt", realm,
369 DEFAULT_TKT_LIFE, password);
371 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
372 "Cannot get krb4 ticket: krb_get_pw_in_tkt() failed: %s",
373 krb_get_err_text(ret));
380 hostname = ap_get_server_name(r);
382 hp = gethostbyname(hostname);
385 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
386 "Cannot verify krb4 ticket: gethostbyname() failed: %s",
390 memcpy(&addr, hp->h_addr, sizeof(addr));
392 phost = krb_get_phost((char *)hostname);
394 krb_get_lrealm(lrealm, 1);
396 ret = krb_mk_req(&ticket, linstance, phost, lrealm, 0);
398 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
399 "Cannot verify krb4 ticket: krb_mk_req() failed: %s",
400 krb_get_err_text(ret));
405 ret = krb_rd_req(&ticket, linstance, phost, addr, &authdata, srvtab);
407 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
408 "Cannot verify krb4 ticket: krb_rd_req() failed: %s",
409 krb_get_err_text(ret));
417 krb4_cache_cleanup(void *data)
419 char *tkt_file = (char *) data;
421 krb_set_tkt_string(tkt_file);
427 authenticate_user_krb4pwd(request_rec *r,
428 kerb_auth_config *conf,
429 const char *auth_line)
433 const char *sent_name;
436 char *tkt_file_p = NULL;
441 char lrealm[REALM_SZ];
442 int all_principals_unkown;
444 sent_pw = ap_pbase64decode(r->pool, auth_line);
445 sent_name = ap_getword (r->pool, &sent_pw, ':');
447 /* do not allow user to override realm setting of server */
448 if (ap_strchr_c(sent_name, '@')) {
449 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
450 "specifying realm in user name is prohibited");
451 return HTTP_UNAUTHORIZED;
454 sent_instance = strchr(sent_name, '.');
456 *sent_instance++ = '\0';
458 snprintf(tkt_file, sizeof(tkt_file), "/tmp/apache_tkt_XXXXXX");
459 fd = mkstemp(tkt_file);
461 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
462 "Cannot create krb4 ccache: mkstemp() failed: %s",
464 return HTTP_INTERNAL_SERVER_ERROR;
467 tkt_file_p = ap_pstrdup(r->pool, tkt_file);
468 ap_register_cleanup(r->pool, tkt_file_p,
469 krb4_cache_cleanup, ap_null_cleanup);
471 krb_set_tkt_string(tkt_file);
473 all_principals_unkown = 1;
474 realms = conf->krb_auth_realms;
476 memset(lrealm, 0, sizeof(lrealm));
479 realm = ap_getword_white(r->pool, &realms);
482 ret = krb_get_lrealm(lrealm, 1);
488 /* XXX conf->krb_service_name */
489 ret = verify_krb4_user(r, (char *)sent_name,
490 (sent_instance) ? sent_instance : "",
491 (char *)realm, (char *)sent_pw,
492 conf->krb_service_name,
493 conf->krb_4_srvtab, conf->krb_verify_kdc);
494 if (!conf->krb_authoritative && ret) {
495 /* if we're not authoritative, we allow authentication to pass on
496 * to another modules if (and only if) the user is not known to us */
497 if (all_principals_unkown && ret != KDC_PR_UNKNOWN)
498 all_principals_unkown = 0;
503 } while (realms && *realms);
506 /* XXX log only in the verify_krb4_user() call */
507 log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "Verifying krb4 password failed");
508 ret = (!conf->krb_authoritative && all_principals_unkown == 1 && ret == KDC_PR_UNKNOWN) ?
509 DECLINED : HTTP_UNAUTHORIZED;
513 user = ap_pstrdup(r->pool, sent_name);
515 user = ap_pstrcat(r->pool, user, ".", sent_instance, NULL);
516 user = ap_pstrcat(r->pool, user, "@", realm, NULL);
519 MK_AUTH_TYPE = "Basic";
520 ap_table_setn(r->subprocess_env, "KRBTKFILE", tkt_file_p);
522 if (!conf->krb_save_credentials)
523 krb4_cache_cleanup(tkt_file);
527 krb4_cache_cleanup(tkt_file);
536 /***************************************************************************
537 Username/Password Validation for Krb5
538 ***************************************************************************/
540 /* MIT kerberos uses replay cache checks even during credential verification
541 * (i.e. in krb5_verify_init_creds()), which is obviosuly useless. In order to
542 * avoid problems with multiple apache processes accessing the same rcache file
543 * we had to use this call instead, which is only a bit modified version of
544 * krb5_verify_init_creds() */
545 static krb5_error_code
546 verify_krb5_init_creds(request_rec *r, krb5_context context, krb5_creds *creds,
547 krb5_principal ap_req_server, krb5_keytab ap_req_keytab)
551 krb5_ccache local_ccache = NULL;
552 krb5_creds *new_creds = NULL;
553 krb5_auth_context auth_context = NULL;
554 krb5_keytab keytab = NULL;
557 memset(&req, 0, sizeof(req));
559 if (ap_req_keytab == NULL) {
560 ret = krb5_kt_default (context, &keytab);
564 keytab = ap_req_keytab;
566 ret = krb5_cc_resolve(context, "MEMORY:", &local_ccache);
568 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
569 "krb5_cc_resolve() failed when verifying KDC");
573 ret = krb5_cc_initialize(context, local_ccache, creds->client);
575 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
576 "krb5_cc_initialize() failed when verifying KDC");
580 ret = krb5_cc_store_cred (context, local_ccache, creds);
582 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
583 "krb5_cc_initialize() failed when verifying KDC");
587 ret = krb5_unparse_name(context, ap_req_server, &server_name);
589 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
590 "krb5_unparse_name() failed when verifying KDC");
593 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
594 "Trying to verify authenticity of KDC using principal %s", server_name);
597 if (!krb5_principal_compare (context, ap_req_server, creds->server)) {
598 krb5_creds match_cred;
600 memset (&match_cred, 0, sizeof(match_cred));
602 match_cred.client = creds->client;
603 match_cred.server = ap_req_server;
605 ret = krb5_get_credentials (context, 0, local_ccache,
606 &match_cred, &new_creds);
608 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
609 "krb5_get_credentials() failed when verifying KDC");
615 ret = krb5_mk_req_extended (context, &auth_context, 0, NULL, creds, &req);
617 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
618 "krb5_mk_req_extended() failed when verifying KDC");
622 krb5_auth_con_free (context, auth_context);
624 ret = krb5_auth_con_init(context, &auth_context);
626 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
627 "krb5_auth_con_init() failed when verifying KDC");
630 /* use KRB5_AUTH_CONTEXT_DO_SEQUENCE to skip replay cache checks */
631 krb5_auth_con_setflags(context, auth_context, KRB5_AUTH_CONTEXT_DO_SEQUENCE);
633 ret = krb5_rd_req (context, &auth_context, &req, ap_req_server,
636 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
637 "krb5_rd_req() failed when verifying KDC");
643 /* XXX Do I ever want to support Heimdal 0.4 ??? */
644 krb5_data_free(&req);
646 krb5_free_data_contents(context, &req);
649 krb5_auth_con_free (context, auth_context);
651 krb5_free_creds (context, new_creds);
652 if (ap_req_keytab == NULL && keytab)
653 krb5_kt_close (context, keytab);
655 krb5_cc_destroy (context, local_ccache);
660 /* Inspired by krb5_verify_user from Heimdal */
661 static krb5_error_code
662 verify_krb5_user(request_rec *r, krb5_context context, krb5_principal principal,
663 const char *password, krb5_principal server,
664 krb5_keytab keytab, int krb_verify_kdc, krb5_ccache *ccache)
668 krb5_ccache ret_ccache = NULL;
671 /* XXX error messages shouldn't be logged here (and in the while() loop in
672 * authenticate_user_krb5pwd() as weell), in order to avoid confusing log
673 * entries when using multiple realms */
675 memset(&creds, 0, sizeof(creds));
677 ret = krb5_unparse_name(context, principal, &name);
679 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
680 "Trying to get TGT for user %s", name);
684 ret = krb5_get_init_creds_password(context, &creds, principal,
685 (char *)password, NULL,
686 NULL, 0, NULL, NULL);
688 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
689 "krb5_get_init_creds_password() failed: %s",
690 krb5_get_err_text(context, ret));
698 krb5_get_default_realm(context, &realm);
699 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
700 "trying to verify password using key for %s/%s@%s",
701 service, ap_get_server_name(r), realm);
705 if (krb_verify_kdc &&
706 (ret = verify_krb5_init_creds(r, context, &creds, server, keytab))) {
707 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
708 "failed to verify krb5 credentials: %s",
709 krb5_get_err_text(context, ret));
713 ret = krb5_cc_resolve(context, "MEMORY:", &ret_ccache);
715 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
716 "generating new memory ccache failed: %s",
717 krb5_get_err_text(context, ret));
721 ret = krb5_cc_initialize(context, ret_ccache, principal);
723 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
724 "krb5_cc_initialize() failed: %s",
725 krb5_get_err_text(context, ret));
729 ret = krb5_cc_store_cred(context, ret_ccache, &creds);
731 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
732 "krb5_cc_store_cred() failed: %s",
733 krb5_get_err_text(context, ret));
736 *ccache = ret_ccache;
740 krb5_free_cred_contents(context, &creds);
742 krb5_cc_destroy(context, ret_ccache);
748 krb5_cache_cleanup(void *data)
750 krb5_context context;
752 krb5_error_code problem;
753 char *cache_name = (char *) data;
755 problem = krb5_init_context(&context);
757 /* ap_log_error(APLOG_MARK, APLOG_ERR, 0, NULL, "krb5_init_context() failed"); */
758 return HTTP_INTERNAL_SERVER_ERROR;
761 problem = krb5_cc_resolve(context, cache_name, &cache);
763 /* log_error(APLOG_MARK, APLOG_ERR, 0, NULL,
764 "krb5_cc_resolve() failed (%s: %s)",
765 cache_name, krb5_get_err_text(context, problem)); */
766 return HTTP_INTERNAL_SERVER_ERROR;
769 krb5_cc_destroy(context, cache);
770 krb5_free_context(context);
775 create_krb5_ccache(krb5_context kcontext,
777 kerb_auth_config *conf,
778 krb5_principal princ,
783 krb5_error_code problem;
785 krb5_ccache tmp_ccache = NULL;
787 ccname = apr_psprintf(r->pool, "FILE:%s/krb5cc_apache_XXXXXX", P_tmpdir);
788 fd = mkstemp(ccname + strlen("FILE:"));
790 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
791 "mkstemp() failed: %s", strerror(errno));
792 ret = HTTP_INTERNAL_SERVER_ERROR;
797 problem = krb5_cc_resolve(kcontext, ccname, &tmp_ccache);
799 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
800 "krb5_cc_resolve() failed: %s",
801 krb5_get_err_text(kcontext, problem));
802 ret = HTTP_INTERNAL_SERVER_ERROR;
807 problem = krb5_cc_initialize(kcontext, tmp_ccache, princ);
809 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
810 "Cannot initialize krb5 ccache %s: krb5_cc_initialize() failed: %s",
811 ccname, krb5_get_err_text(kcontext, problem));
812 ret = HTTP_INTERNAL_SERVER_ERROR;
816 apr_table_setn(r->subprocess_env, "KRB5CCNAME", ccname);
817 apr_pool_cleanup_register(r->pool, ccname, krb5_cache_cleanup,
818 apr_pool_cleanup_null);
820 *ccache = tmp_ccache;
827 krb5_cc_destroy(kcontext, tmp_ccache);
833 store_krb5_creds(krb5_context kcontext,
835 kerb_auth_config *conf,
836 krb5_ccache delegated_cred)
839 krb5_error_code problem;
840 krb5_principal princ;
844 problem = krb5_cc_get_principal(kcontext, delegated_cred, &princ);
846 snprintf(errstr, sizeof(errstr), "krb5_cc_get_principal() failed: %s",
847 krb5_get_err_text(kcontext, problem));
848 return HTTP_INTERNAL_SERVER_ERROR;
851 ret = create_krb5_ccache(kcontext, r, conf, princ, &ccache);
853 krb5_free_principal(kcontext, princ);
858 problem = krb5_cc_copy_cache(kcontext, delegated_cred, ccache);
860 problem = krb5_cc_copy_creds(kcontext, delegated_cred, ccache);
862 krb5_free_principal(kcontext, princ);
864 snprintf(errstr, sizeof(errstr), "Failed to store credentials: %s",
865 krb5_get_err_text(kcontext, problem));
866 krb5_cc_destroy(kcontext, ccache);
867 return HTTP_INTERNAL_SERVER_ERROR;
870 krb5_cc_close(kcontext, ccache);
876 authenticate_user_krb5pwd(request_rec *r,
877 kerb_auth_config *conf,
878 const char *auth_line)
880 const char *sent_pw = NULL;
881 const char *sent_name = NULL;
882 const char *realms = NULL;
883 const char *realm = NULL;
884 krb5_context kcontext = NULL;
885 krb5_error_code code;
886 krb5_principal client = NULL;
887 krb5_principal server = NULL;
888 krb5_ccache ccache = NULL;
889 krb5_keytab keytab = NULL;
892 int all_principals_unkown;
895 code = krb5_init_context(&kcontext);
897 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
898 "Cannot initialize Kerberos5 context (%d)", code);
899 return HTTP_INTERNAL_SERVER_ERROR;
902 sent_pw = ap_pbase64decode(r->pool, auth_line);
903 sent_name = ap_getword (r->pool, &sent_pw, ':');
905 if (sent_pw == NULL || *sent_pw == '\0') {
906 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
907 "empty passwords are not accepted");
908 ret = HTTP_UNAUTHORIZED;
912 if (conf->krb_5_keytab)
913 krb5_kt_resolve(kcontext, conf->krb_5_keytab, &keytab);
915 if (conf->krb_service_name && strchr(conf->krb_service_name, '/') != NULL)
916 ret = krb5_parse_name (kcontext, conf->krb_service_name, &server);
918 ret = krb5_sname_to_principal(kcontext, ap_get_server_name(r),
919 (conf->krb_service_name) ? conf->krb_service_name : SERVICE_NAME,
920 KRB5_NT_SRV_HST, &server);
923 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
924 "Error parsing server name (%s): %s",
925 (conf->krb_service_name) ? conf->krb_service_name : SERVICE_NAME,
926 krb5_get_err_text(kcontext, ret));
927 ret = HTTP_UNAUTHORIZED;
931 code = krb5_unparse_name(kcontext, server, &name);
933 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
934 "krb5_unparse_name() failed: %s",
935 krb5_get_err_text(kcontext, code));
936 ret = HTTP_UNAUTHORIZED;
939 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "Using %s as server principal for password verification", name);
943 p = strchr(sent_name, '@');
946 if (conf->krb_auth_realms && !ap_find_token(r->pool, conf->krb_auth_realms, p)) {
947 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
948 "Specified realm `%s' not allowed by configuration", p);
949 ret = HTTP_UNAUTHORIZED;
954 realms = (p) ? p : conf->krb_auth_realms;
955 all_principals_unkown = 1;
957 name = (char *) sent_name;
958 if (realms && (realm = ap_getword_white(r->pool, &realms)))
959 name = apr_psprintf(r->pool, "%s@%s", sent_name, realm);
962 krb5_free_principal(kcontext, client);
966 code = krb5_parse_name(kcontext, name, &client);
968 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
969 "krb5_parse_name() failed: %s",
970 krb5_get_err_text(kcontext, code));
974 code = verify_krb5_user(r, kcontext, client, sent_pw,
975 server, keytab, conf->krb_verify_kdc, &ccache);
976 if (!conf->krb_authoritative && code) {
977 /* if we're not authoritative, we allow authentication to pass on
978 * to another modules if (and only if) the user is not known to us */
979 if (all_principals_unkown && code != KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN)
980 all_principals_unkown = 0;
986 /* ap_getword_white() used above shifts the parameter, so it's not
987 needed to touch the realms variable */
988 } while (realms && *realms);
990 memset((char *)sent_pw, 0, strlen(sent_pw));
993 if (!conf->krb_authoritative && all_principals_unkown == 1 && code == KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN)
996 ret = HTTP_UNAUTHORIZED;
1001 code = krb5_unparse_name(kcontext, client, &name);
1003 log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "krb5_unparse_name() failed: %s",
1004 krb5_get_err_text(kcontext, code));
1005 ret = HTTP_UNAUTHORIZED;
1008 MK_USER = apr_pstrdup (r->pool, name);
1009 MK_AUTH_TYPE = "Basic";
1012 if (conf->krb_save_credentials)
1013 store_krb5_creds(kcontext, r, conf, ccache);
1018 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
1019 "kerb_authenticate_user_krb5pwd ret=%d user=%s authtype=%s",
1020 ret, (MK_USER)?MK_USER:"(NULL)", (MK_AUTH_TYPE)?MK_AUTH_TYPE:"(NULL)");
1022 krb5_free_principal(kcontext, client);
1024 krb5_free_principal(kcontext, server);
1026 krb5_cc_destroy(kcontext, ccache);
1028 krb5_kt_close(kcontext, keytab);
1029 krb5_free_context(kcontext);
1034 /*********************************************************************
1035 * GSSAPI Authentication
1036 ********************************************************************/
1039 get_gss_error(MK_POOL *p, OM_uint32 err_maj, OM_uint32 err_min, char *prefix)
1041 OM_uint32 maj_stat, min_stat;
1042 OM_uint32 msg_ctx = 0;
1043 gss_buffer_desc status_string;
1046 err_msg = apr_pstrdup(p, prefix);
1048 maj_stat = gss_display_status (&min_stat,
1054 if (GSS_ERROR(maj_stat))
1056 err_msg = apr_pstrcat(p, err_msg, ": ", (char*) status_string.value, NULL);
1057 gss_release_buffer(&min_stat, &status_string);
1059 maj_stat = gss_display_status (&min_stat,
1065 if (!GSS_ERROR(maj_stat)) {
1066 err_msg = apr_pstrcat(p, err_msg,
1067 " (", (char*) status_string.value, ")", NULL);
1068 gss_release_buffer(&min_stat, &status_string);
1070 } while (!GSS_ERROR(maj_stat) && msg_ctx != 0);
1076 store_gss_creds(request_rec *r, kerb_auth_config *conf, char *princ_name,
1077 gss_cred_id_t delegated_cred)
1079 OM_uint32 maj_stat, min_stat;
1080 krb5_principal princ = NULL;
1081 krb5_ccache ccache = NULL;
1082 krb5_error_code problem;
1083 krb5_context context;
1084 int ret = HTTP_INTERNAL_SERVER_ERROR;
1086 problem = krb5_init_context(&context);
1088 log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "Cannot initialize krb5 context");
1089 return HTTP_INTERNAL_SERVER_ERROR;
1092 problem = krb5_parse_name(context, princ_name, &princ);
1094 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1095 "Cannot parse delegated username (%s)", krb5_get_err_text(context, problem));
1099 problem = create_krb5_ccache(context, r, conf, princ, &ccache);
1101 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1102 "Cannot create krb5 ccache (%s)", krb5_get_err_text(context, problem));
1106 maj_stat = gss_krb5_copy_ccache(&min_stat, delegated_cred, ccache);
1107 if (GSS_ERROR(maj_stat)) {
1108 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1109 "Cannot store delegated credential (%s)",
1110 get_gss_error(r->pool, maj_stat, min_stat, "gss_krb5_copy_ccache"));
1114 krb5_cc_close(context, ccache);
1120 krb5_free_principal(context, princ);
1122 krb5_cc_destroy(context, ccache);
1123 krb5_free_context(context);
1128 get_gss_creds(request_rec *r,
1129 kerb_auth_config *conf,
1130 gss_cred_id_t *server_creds)
1132 gss_buffer_desc token = GSS_C_EMPTY_BUFFER;
1133 OM_uint32 major_status, minor_status, minor_status2;
1134 gss_name_t server_name = GSS_C_NO_NAME;
1136 int have_server_princ;
1139 have_server_princ = conf->krb_service_name && strchr(conf->krb_service_name, '/') != NULL;
1140 if (have_server_princ)
1141 strncpy(buf, conf->krb_service_name, sizeof(buf));
1143 snprintf(buf, sizeof(buf), "%s@%s",
1144 (conf->krb_service_name) ? conf->krb_service_name : SERVICE_NAME,
1145 ap_get_server_name(r));
1148 token.length = strlen(buf) + 1;
1150 major_status = gss_import_name(&minor_status, &token,
1151 (have_server_princ) ? GSS_KRB5_NT_PRINCIPAL_NAME : GSS_C_NT_HOSTBASED_SERVICE,
1153 memset(&token, 0, sizeof(token));
1154 if (GSS_ERROR(major_status)) {
1155 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1156 "%s", get_gss_error(r->pool, major_status, minor_status,
1157 "gss_import_name() failed"));
1158 return HTTP_INTERNAL_SERVER_ERROR;
1161 major_status = gss_display_name(&minor_status, server_name, &token, NULL);
1162 if (GSS_ERROR(major_status)) {
1163 /* Perhaps we could just ignore this error but it's safer to give up now,
1165 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1166 "%s", get_gss_error(r->pool, major_status, minor_status,
1167 "gss_display_name() failed"));
1168 return HTTP_INTERNAL_SERVER_ERROR;
1171 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "Acquiring creds for %s",
1173 gss_release_buffer(&minor_status, &token);
1175 major_status = gss_acquire_cred(&minor_status, server_name, GSS_C_INDEFINITE,
1176 GSS_C_NO_OID_SET, GSS_C_ACCEPT,
1177 server_creds, NULL, NULL);
1178 gss_release_name(&minor_status2, &server_name);
1179 if (GSS_ERROR(major_status)) {
1180 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1181 "%s", get_gss_error(r->pool, major_status, minor_status,
1182 "gss_acquire_cred() failed"));
1183 return HTTP_INTERNAL_SERVER_ERROR;
1188 * With MIT Kerberos 5 1.3.x the gss_cred_id_t is the same as
1189 * krb5_gss_cred_id_t and krb5_gss_cred_id_rec contains a pointer to
1191 * This allows us to override the replay cache function vector with
1193 * Note that this is a dirty hack to get things working and there may
1194 * well be unknown side-effects.
1197 krb5_gss_cred_id_t gss_creds = (krb5_gss_cred_id_t) *server_creds;
1199 /* First we try to verify we are linked with 1.3.x to prevent from
1200 crashing when linked with 1.4.x */
1201 if (gss_creds && (gss_creds->usage == GSS_C_ACCEPT)) {
1202 if (gss_creds->rcache && gss_creds->rcache->ops &&
1203 gss_creds->rcache->ops->type &&
1204 memcmp(gss_creds->rcache->ops->type, "dfl", 3) == 0)
1205 /* Override the rcache operations */
1206 gss_creds->rcache->ops = &mod_auth_kerb_rc_ops;
1215 cmp_gss_type(gss_buffer_t token, gss_OID oid)
1220 if (token->length == 0)
1221 return GSS_S_DEFECTIVE_TOKEN;
1225 return GSS_S_DEFECTIVE_TOKEN;
1228 if ((len & 0x7f) > 4)
1229 return GSS_S_DEFECTIVE_TOKEN;
1233 return GSS_S_DEFECTIVE_TOKEN;
1235 if (((OM_uint32) *p++) != oid->length)
1236 return GSS_S_DEFECTIVE_TOKEN;
1238 return memcmp(p, oid->elements, oid->length);
1242 authenticate_user_gss(request_rec *r, kerb_auth_config *conf,
1243 const char *auth_line, char **negotiate_ret_value)
1245 OM_uint32 major_status, minor_status, minor_status2;
1246 gss_buffer_desc input_token = GSS_C_EMPTY_BUFFER;
1247 gss_buffer_desc output_token = GSS_C_EMPTY_BUFFER;
1248 const char *auth_param = NULL;
1250 gss_name_t client_name = GSS_C_NO_NAME;
1251 gss_cred_id_t delegated_cred = GSS_C_NO_CREDENTIAL;
1252 OM_uint32 (KRB5_LIB_FUNCTION *accept_sec_token)
1253 (OM_uint32 *, gss_ctx_id_t *, const gss_cred_id_t,
1254 const gss_buffer_t, const gss_channel_bindings_t,
1255 gss_name_t *, gss_OID *, gss_buffer_t, OM_uint32 *,
1256 OM_uint32 *, gss_cred_id_t *);
1257 gss_OID_desc spnego_oid;
1258 gss_ctx_id_t context = GSS_C_NO_CONTEXT;
1259 gss_cred_id_t server_creds = GSS_C_NO_CREDENTIAL;
1261 *negotiate_ret_value = "\0";
1263 spnego_oid.length = 6;
1264 spnego_oid.elements = (void *)"\x2b\x06\x01\x05\x05\x02";
1266 if (conf->krb_5_keytab) {
1268 /* we don't use the ap_* calls here, since the string passed to putenv()
1269 * will become part of the enviroment and shouldn't be free()ed by apache
1271 ktname = malloc(strlen("KRB5_KTNAME=") + strlen(conf->krb_5_keytab) + 1);
1272 if (ktname == NULL) {
1273 log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "malloc() failed: not enough memory");
1274 ret = HTTP_INTERNAL_SERVER_ERROR;
1277 sprintf(ktname, "KRB5_KTNAME=%s", conf->krb_5_keytab);
1280 /* Seems to be also supported by latest MIT */
1281 gsskrb5_register_acceptor_identity(conf->krb_5_keytab);
1285 ret = get_gss_creds(r, conf, &server_creds);
1289 /* ap_getword() shifts parameter */
1290 auth_param = ap_getword_white(r->pool, &auth_line);
1291 if (auth_param == NULL) {
1292 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1293 "No Authorization parameter in request from client");
1294 ret = HTTP_UNAUTHORIZED;
1298 input_token.length = apr_base64_decode_len(auth_param) + 1;
1299 input_token.value = apr_pcalloc(r->connection->pool, input_token.length);
1300 if (input_token.value == NULL) {
1301 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1302 "ap_pcalloc() failed (not enough memory)");
1303 ret = HTTP_INTERNAL_SERVER_ERROR;
1306 input_token.length = apr_base64_decode(input_token.value, auth_param);
1308 #ifdef GSSAPI_SUPPORTS_SPNEGO
1309 accept_sec_token = gss_accept_sec_context;
1311 accept_sec_token = (cmp_gss_type(&input_token, &spnego_oid) == 0) ?
1312 gss_accept_sec_context_spnego : gss_accept_sec_context;
1315 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "Verifying client data using %s",
1316 (accept_sec_token == gss_accept_sec_context)
1318 : "SPNEGO GSS-API");
1320 major_status = accept_sec_token(&minor_status,
1324 GSS_C_NO_CHANNEL_BINDINGS,
1331 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
1332 "Verification returned code %d", major_status);
1333 if (output_token.length) {
1337 len = apr_base64_encode_len(output_token.length) + 1;
1338 token = apr_pcalloc(r->connection->pool, len + 1);
1339 if (token == NULL) {
1340 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1341 "ap_pcalloc() failed (not enough memory)");
1342 ret = HTTP_INTERNAL_SERVER_ERROR;
1343 gss_release_buffer(&minor_status2, &output_token);
1346 apr_base64_encode(token, output_token.value, output_token.length);
1348 *negotiate_ret_value = token;
1349 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
1350 "GSS-API token of length %d bytes will be sent back",
1351 output_token.length);
1352 gss_release_buffer(&minor_status2, &output_token);
1353 set_kerb_auth_headers(r, conf, 0, 0, *negotiate_ret_value);
1356 if (GSS_ERROR(major_status)) {
1357 if (input_token.length > 7 && memcmp(input_token.value, "NTLMSSP", 7) == 0)
1358 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
1359 "Warning: received token seems to be NTLM, which isn't supported by the Kerberos module. Check your IE configuration.");
1361 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1362 "%s", get_gss_error(r->pool, major_status, minor_status,
1363 "gss_accept_sec_context() failed"));
1364 /* Don't offer the Negotiate method again if call to GSS layer failed */
1365 *negotiate_ret_value = NULL;
1366 ret = HTTP_UNAUTHORIZED;
1371 /* This is a _Kerberos_ module so multiple authentication rounds aren't
1372 * supported. If we wanted a generic GSS authentication we would have to do
1373 * some magic with exporting context etc. */
1374 if (major_status & GSS_S_CONTINUE_NEEDED) {
1375 ret = HTTP_UNAUTHORIZED;
1380 major_status = gss_display_name(&minor_status, client_name, &output_token, NULL);
1381 gss_release_name(&minor_status, &client_name);
1382 if (GSS_ERROR(major_status)) {
1383 log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1384 "%s", get_gss_error(r->pool, major_status, minor_status,
1385 "gss_display_name() failed"));
1386 ret = HTTP_INTERNAL_SERVER_ERROR;
1390 MK_AUTH_TYPE = MECH_NEGOTIATE;
1391 MK_USER = apr_pstrdup(r->pool, output_token.value);
1393 if (conf->krb_save_credentials && delegated_cred != GSS_C_NO_CREDENTIAL)
1394 store_gss_creds(r, conf, (char *)output_token.value, delegated_cred);
1396 gss_release_buffer(&minor_status, &output_token);
1402 gss_release_cred(&minor_status, &delegated_cred);
1404 if (output_token.length)
1405 gss_release_buffer(&minor_status, &output_token);
1407 if (client_name != GSS_C_NO_NAME)
1408 gss_release_name(&minor_status, &client_name);
1410 if (server_creds != GSS_C_NO_CREDENTIAL)
1411 gss_release_cred(&minor_status, &server_creds);
1413 if (context != GSS_C_NO_CONTEXT)
1414 gss_delete_sec_context(&minor_status, &context, GSS_C_NO_BUFFER);
1421 already_succeeded(request_rec *r)
1423 if (ap_is_initial_req(r) || MK_AUTH_TYPE == NULL)
1425 if (strcmp(MK_AUTH_TYPE, MECH_NEGOTIATE) ||
1426 (strcmp(MK_AUTH_TYPE, "Basic") && strchr(MK_USER, '@')))
1432 set_kerb_auth_headers(request_rec *r, const kerb_auth_config *conf,
1433 int use_krb4, int use_krb5pwd, char *negotiate_ret_value)
1435 const char *auth_name = NULL;
1437 char *negoauth_param;
1438 const char *header_name =
1439 (r->proxyreq == PROXYREQ_PROXY) ? "Proxy-Authenticate" : "WWW-Authenticate";
1441 /* get the user realm specified in .htaccess */
1442 auth_name = ap_auth_name(r);
1444 /* XXX should the WWW-Authenticate header be cleared first?
1445 * apache in the proxy mode should retain client's authN headers? */
1447 if (negotiate_ret_value != NULL && conf->krb_method_gssapi) {
1448 negoauth_param = (*negotiate_ret_value == '\0') ? MECH_NEGOTIATE :
1449 apr_pstrcat(r->pool, MECH_NEGOTIATE " ", negotiate_ret_value, NULL);
1450 apr_table_add(r->err_headers_out, header_name, negoauth_param);
1452 if ((use_krb5pwd && conf->krb_method_k5pass) || conf->krb_delegate_basic) {
1453 apr_table_add(r->err_headers_out, header_name,
1454 apr_pstrcat(r->pool, "Basic realm=\"", auth_name, "\"", NULL));
1461 ((use_krb4 && conf->krb_method_k4pass) || conf->krb_delegate_basic))
1462 ap_table_add(r->err_headers_out, header_name,
1463 ap_pstrcat(r->pool, "Basic realm=\"", auth_name, "\"", NULL));
1468 kerb_authenticate_user(request_rec *r)
1470 kerb_auth_config *conf =
1471 (kerb_auth_config *) ap_get_module_config(r->per_dir_config,
1473 const char *auth_type = NULL;
1474 const char *auth_line = NULL;
1475 const char *type = NULL;
1476 int use_krb5 = 0, use_krb4 = 0;
1478 static int last_return = HTTP_UNAUTHORIZED;
1479 char *negotiate_ret_value = NULL;
1481 /* get the type specified in .htaccess */
1482 type = ap_auth_type(r);
1484 log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
1485 "kerb_authenticate_user entered with user %s and auth_type %s",
1486 (MK_USER)?MK_USER:"(NULL)",type?type:"(NULL)");
1488 if (type && strcasecmp(type, "Kerberos") == 0)
1489 use_krb5 = use_krb4 = 1;
1490 else if(type && strcasecmp(type, "KerberosV5") == 0)
1492 else if(type && strcasecmp(type, "KerberosV4") == 0)
1498 if (conf->krb_ssl_preauthentication) {
1499 const char *ssl_client_verify = ssl_var_lookup(r->pool, r->server,
1500 r->connection, r, "SSL_CLIENT_VERIFY");
1502 if (ssl_client_verify && strcmp(ssl_client_verify, "SUCCESS") == 0)
1507 /* get what the user sent us in the HTTP header */
1508 auth_line = MK_TABLE_GET(r->headers_in, (r->proxyreq == PROXYREQ_PROXY)
1509 ? "Proxy-Authorization"
1512 set_kerb_auth_headers(r, conf, use_krb4, use_krb5,
1513 (use_krb5) ? "\0" : NULL);
1514 return HTTP_UNAUTHORIZED;
1516 auth_type = ap_getword_white(r->pool, &auth_line);
1518 /* If we are delegating Basic to other modules, DECLINE the request */
1519 if (conf->krb_delegate_basic &&
1521 !conf->krb_method_k5pass &&
1524 !conf->krb_method_k4pass &&
1526 (strcasecmp(auth_type, "Basic") == 0))
1529 if (already_succeeded(r))
1532 ret = HTTP_UNAUTHORIZED;
1535 if (use_krb5 && conf->krb_method_gssapi &&
1536 strcasecmp(auth_type, MECH_NEGOTIATE) == 0) {
1537 ret = authenticate_user_gss(r, conf, auth_line, &negotiate_ret_value);
1538 } else if (use_krb5 && conf->krb_method_k5pass &&
1539 strcasecmp(auth_type, "Basic") == 0) {
1540 ret = authenticate_user_krb5pwd(r, conf, auth_line);
1545 if (ret == HTTP_UNAUTHORIZED && use_krb4 && conf->krb_method_k4pass &&
1546 strcasecmp(auth_type, "Basic") == 0)
1547 ret = authenticate_user_krb4pwd(r, conf, auth_line);
1550 if (ret == HTTP_UNAUTHORIZED)
1551 set_kerb_auth_headers(r, conf, use_krb4, use_krb5, negotiate_ret_value);
1553 /* XXX log_debug: if ret==OK, log(user XY authenticated) */
1560 have_rcache_type(const char *type)
1562 krb5_error_code ret;
1563 krb5_context context;
1567 memset(&id, 0, sizeof(id));
1569 ret = krb5_init_context(&context);
1573 ret = krb5_rc_resolve_type(context, &id, type);
1576 krb5_free_context(context);
1581 /***************************************************************************
1582 Module Setup/Configuration
1583 ***************************************************************************/
1584 #ifndef STANDARD20_MODULE_STUFF
1586 kerb_module_init(server_rec *dummy, pool *p)
1589 /* Suppress the MIT replay cache. Requires MIT Kerberos 1.4.0 or later.
1590 1.3.x are covered by the hack overiding the replay calls */
1591 if (getenv("KRB5RCACHETYPE") == NULL && have_rcache_type("none"))
1592 putenv(strdup("KRB5RCACHETYPE=none"));
1596 module MODULE_VAR_EXPORT auth_kerb_module = {
1597 STANDARD_MODULE_STUFF,
1598 kerb_module_init, /* module initializer */
1599 kerb_dir_create_config, /* per-directory config creator */
1600 NULL, /* per-directory config merger */
1601 NULL, /* per-server config creator */
1602 NULL, /* per-server config merger */
1603 kerb_auth_cmds, /* command table */
1604 NULL, /* [ 9] content handlers */
1605 NULL, /* [ 2] URI-to-filename translation */
1606 kerb_authenticate_user, /* [ 5] check/validate user_id */
1607 NULL, /* [ 6] check user_id is valid *here* */
1608 NULL, /* [ 4] check access by host address */
1609 NULL, /* [ 7] MIME type checker/setter */
1610 NULL, /* [ 8] fixups */
1611 NULL, /* [10] logger */
1612 NULL, /* [ 3] header parser */
1613 NULL, /* process initialization */
1614 NULL, /* process exit/cleanup */
1615 NULL /* [ 1] post read_request handling */
1617 ,NULL, /* EAPI: add_module */
1618 NULL, /* EAPI: remove_module */
1619 NULL, /* EAPI: rewrite_command */
1620 NULL /* EAPI: new_connection */
1625 kerb_init_handler(apr_pool_t *p, apr_pool_t *plog,
1626 apr_pool_t *ptemp, server_rec *s)
1628 ap_add_version_component(p, "mod_auth_kerb/" MODAUTHKERB_VERSION);
1630 /* Suppress the MIT replay cache. Requires MIT Kerberos 1.4.0 or later.
1631 1.3.x are covered by the hack overiding the replay calls */
1632 if (getenv("KRB5RCACHETYPE") == NULL && have_rcache_type("none"))
1633 putenv(strdup("KRB5RCACHETYPE=none"));
1640 kerb_register_hooks(apr_pool_t *p)
1642 ap_hook_post_config(kerb_init_handler, NULL, NULL, APR_HOOK_MIDDLE);
1643 ap_hook_check_user_id(kerb_authenticate_user, NULL, NULL, APR_HOOK_MIDDLE);
1646 module AP_MODULE_DECLARE_DATA auth_kerb_module =
1648 STANDARD20_MODULE_STUFF,
1649 kerb_dir_create_config, /* create per-dir conf structures */
1650 NULL, /* merge per-dir conf structures */
1651 NULL, /* create per-server conf structures */
1652 NULL, /* merge per-server conf structures */
1653 kerb_auth_cmds, /* table of configuration directives */
1654 kerb_register_hooks /* register hooks */