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/*
* kdc/kdc_util.h
*
* Portions Copyright (C) 2007 Apple Inc.
* Copyright 1990, 2007 by the Massachusetts Institute of Technology.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*
* Declarations for policy.c
*/
#ifndef __KRB5_KDC_UTIL__
#define __KRB5_KDC_UTIL__
#include "kdb.h"
#include "kdb_ext.h"
typedef struct _krb5_fulladdr {
krb5_address * address;
krb5_ui_4 port;
} krb5_fulladdr;
krb5_error_code check_hot_list (krb5_ticket *);
krb5_boolean realm_compare (krb5_const_principal, krb5_const_principal);
krb5_boolean is_local_principal(krb5_const_principal princ1);
krb5_boolean krb5_is_tgs_principal (krb5_const_principal);
krb5_error_code add_to_transited (krb5_data *,
krb5_data *,
krb5_principal,
krb5_principal,
krb5_principal);
krb5_error_code compress_transited (krb5_data *,
krb5_principal,
krb5_data *);
krb5_error_code concat_authorization_data (krb5_authdata **,
krb5_authdata **,
krb5_authdata ***);
krb5_error_code fetch_last_req_info (krb5_db_entry *,
krb5_last_req_entry ***);
krb5_error_code kdc_convert_key (krb5_keyblock *,
krb5_keyblock *,
int);
krb5_error_code kdc_process_tgs_req
(krb5_kdc_req *,
const krb5_fulladdr *,
krb5_data *,
krb5_ticket **,
krb5_db_entry *krbtgt,
int *nprincs,
krb5_keyblock **, krb5_pa_data **pa_tgs_req);
krb5_error_code kdc_get_server_key (krb5_ticket *, unsigned int,
krb5_boolean match_enctype,
krb5_db_entry *, int *,
krb5_keyblock **, krb5_kvno *);
int validate_as_request (krb5_kdc_req *, krb5_db_entry,
krb5_db_entry, krb5_timestamp,
const char **);
int validate_forwardable(krb5_kdc_req *, krb5_db_entry,
krb5_db_entry, krb5_timestamp,
const char **);
int validate_tgs_request (krb5_kdc_req *, krb5_db_entry,
krb5_ticket *, krb5_timestamp,
const char **);
int fetch_asn1_field (unsigned char *, unsigned int, unsigned int,
krb5_data *);
int
dbentry_has_key_for_enctype (krb5_context context,
krb5_db_entry *client,
krb5_enctype enctype);
int
dbentry_supports_enctype (krb5_context context,
krb5_db_entry *client,
krb5_enctype enctype);
krb5_enctype
select_session_keytype (krb5_context context,
krb5_db_entry *server,
int nktypes,
krb5_enctype *ktypes);
krb5_error_code
get_salt_from_key (krb5_context, krb5_principal,
krb5_key_data *, krb5_data *);
void limit_string (char *name);
void
ktypes2str(char *s, size_t len, int nktypes, krb5_enctype *ktype);
void
rep_etypes2str(char *s, size_t len, krb5_kdc_rep *rep);
/* do_as_req.c */
krb5_error_code process_as_req (krb5_kdc_req *, krb5_data *,
const krb5_fulladdr *,
krb5_data ** );
/* do_tgs_req.c */
krb5_error_code process_tgs_req (krb5_data *,
const krb5_fulladdr *,
krb5_data ** );
/* dispatch.c */
krb5_error_code dispatch (krb5_data *,
const krb5_fulladdr *,
krb5_data **);
/* main.c */
krb5_error_code kdc_initialize_rcache (krb5_context, char *);
krb5_error_code setup_server_realm (krb5_principal);
void kdc_err(krb5_context call_context, errcode_t code, const char *fmt, ...);
/* network.c */
krb5_error_code listen_and_process (void);
krb5_error_code setup_network (void);
krb5_error_code closedown_network (void);
/* policy.c */
int against_local_policy_as (krb5_kdc_req *, krb5_db_entry,
krb5_db_entry, krb5_timestamp,
const char **);
int against_local_policy_tgs (krb5_kdc_req *, krb5_db_entry,
krb5_ticket *, const char **);
/* kdc_preauth.c */
const char * missing_required_preauth
(krb5_db_entry *client, krb5_db_entry *server,
krb5_enc_tkt_part *enc_tkt_reply);
void get_preauth_hint_list (krb5_kdc_req * request,
krb5_db_entry *client,
krb5_db_entry *server,
krb5_data *e_data);
krb5_error_code load_preauth_plugins(krb5_context context);
krb5_error_code unload_preauth_plugins(krb5_context context);
krb5_error_code check_padata
(krb5_context context, krb5_db_entry *client, krb5_data *req_pkt,
krb5_kdc_req *request, krb5_enc_tkt_part *enc_tkt_reply,
void **padata_context, krb5_data *e_data);
krb5_error_code return_padata
(krb5_context context, krb5_db_entry *client,
krb5_data *req_pkt, krb5_kdc_req *request, krb5_kdc_rep *reply,
krb5_key_data *client_key, krb5_keyblock *encrypting_key,
void **padata_context);
krb5_error_code free_padata_context
(krb5_context context, void **padata_context);
krb5_pa_data *find_pa_data
(krb5_pa_data **padata, krb5_preauthtype pa_type);
/* kdc_authdata.c */
krb5_error_code load_authdata_plugins(krb5_context context);
krb5_error_code unload_authdata_plugins(krb5_context context);
krb5_error_code
handle_authdata (krb5_context context,
unsigned int flags,
krb5_db_entry *client,
krb5_db_entry *server,
krb5_db_entry *krbtgt,
krb5_keyblock *client_key,
krb5_keyblock *server_key,
krb5_data *req_pkt,
krb5_kdc_req *request,
krb5_const_principal for_user_princ,
krb5_enc_tkt_part *enc_tkt_request,
krb5_enc_tkt_part *enc_tkt_reply);
/* replay.c */
krb5_boolean kdc_check_lookaside (krb5_data *, krb5_data **);
void kdc_insert_lookaside (krb5_data *, krb5_data *);
void kdc_free_lookaside(krb5_context);
/* kdc_util.c */
krb5_error_code
get_principal_locked (krb5_context kcontext,
krb5_const_principal search_for,
krb5_db_entry *entries, int *nentries,
krb5_boolean *more);
krb5_error_code
get_principal (krb5_context kcontext,
krb5_const_principal search_for,
krb5_db_entry *entries, int *nentries, krb5_boolean *more);
krb5_boolean
include_pac_p(krb5_context context, krb5_kdc_req *request);
krb5_error_code return_svr_referral_data
(krb5_context context,
krb5_db_entry *server,
krb5_enc_kdc_rep_part *reply_encpart);
krb5_error_code sign_db_authdata
(krb5_context context,
unsigned int flags,
krb5_const_principal client_princ,
krb5_db_entry *client,
krb5_db_entry *server,
krb5_db_entry *krbtgt,
krb5_keyblock *client_key,
krb5_keyblock *server_key,
krb5_timestamp authtime,
krb5_authdata **tgs_authdata,
krb5_authdata ***ret_authdata,
krb5_db_entry *ad_entry,
int *ad_nprincs);
krb5_error_code kdc_process_s4u2self_req
(krb5_context context,
krb5_kdc_req *request,
krb5_const_principal client_princ,
const krb5_db_entry *server,
krb5_keyblock *subkey,
krb5_timestamp kdc_time,
krb5_pa_for_user **s4u2_req,
krb5_db_entry *princ,
int *nprincs,
const char **status);
krb5_error_code kdc_process_s4u2proxy_req
(krb5_context context,
krb5_kdc_req *request,
const krb5_enc_tkt_part *t2enc,
const krb5_db_entry *server,
krb5_const_principal server_princ,
krb5_const_principal proxy_princ,
const char **status);
krb5_error_code kdc_check_transited_list
(krb5_context context,
const krb5_data *trans,
const krb5_data *realm1,
const krb5_data *realm2);
krb5_error_code audit_as_request
(krb5_kdc_req *request,
krb5_db_entry *client,
krb5_db_entry *server,
krb5_timestamp authtime,
krb5_error_code errcode);
krb5_error_code audit_tgs_request
(krb5_kdc_req *request,
krb5_const_principal client,
krb5_db_entry *server,
krb5_timestamp authtime,
krb5_error_code errcode);
krb5_error_code
validate_transit_path(krb5_context context,
krb5_const_principal client,
krb5_db_entry *server,
krb5_db_entry *krbtgt);
void
log_as_req(const krb5_fulladdr *from,
krb5_kdc_req *request, krb5_kdc_rep *reply,
krb5_db_entry *client, const char *cname,
krb5_db_entry *server, const char *sname,
krb5_timestamp authtime,
const char *status, krb5_error_code errcode, const char *emsg);
void
log_tgs_req(const krb5_fulladdr *from,
krb5_kdc_req *request, krb5_kdc_rep *reply,
const char *cname, const char *sname, const char *altcname,
krb5_timestamp authtime,
unsigned int c_flags, const char *s4u_name,
const char *status, krb5_error_code errcode, const char *emsg);
void log_tgs_alt_tgt(krb5_principal p);
/*Request state*/
struct kdc_request_state {
krb5_keyblock *armor_key;
krb5_keyblock *reply_key; /*When replaced by FAST*/
krb5_pa_data *cookie;
krb5_int32 fast_options;
krb5_int32 fast_internal_flags;
};
krb5_error_code kdc_make_rstate(struct kdc_request_state **out);
void kdc_free_rstate
(struct kdc_request_state *s);
/* FAST*/
enum krb5_fast_kdc_flags {
KRB5_FAST_REPLY_KEY_USED = 0x1,
KRB5_FAST_REPLY_KEY_REPLACED = 0x02,
};
krb5_error_code kdc_find_fast
(krb5_kdc_req **requestptr, krb5_data *checksummed_data,
krb5_keyblock *tgs_subkey, krb5_keyblock *tgs_session,
struct kdc_request_state *state);
krb5_error_code kdc_fast_response_handle_padata
(struct kdc_request_state *state,
krb5_kdc_req *request,
krb5_kdc_rep *rep);
krb5_error_code kdc_fast_handle_error
(krb5_context context, struct kdc_request_state *state,
krb5_kdc_req *request,
krb5_pa_data **in_padata, krb5_error *err);
krb5_error_code kdc_preauth_get_cookie(struct kdc_request_state *state,
krb5_pa_data **cookie);
#define isflagset(flagfield, flag) (flagfield & (flag))
#define setflag(flagfield, flag) (flagfield |= (flag))
#define clear(flagfield, flag) (flagfield &= ~(flag))
#ifndef min
#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))
#endif
#ifdef KRB5_USE_INET6
#define ADDRTYPE2FAMILY(X) \
((X) == ADDRTYPE_INET6 ? AF_INET6 : (X) == ADDRTYPE_INET ? AF_INET : -1)
#else
#define ADDRTYPE2FAMILY(X) \
((X) == ADDRTYPE_INET ? AF_INET : -1)
#endif
/* RFC 4120: KRB5KDC_ERR_KEY_TOO_WEAK
* RFC 4556: KRB5KDC_ERR_DH_KEY_PARAMETERS_NOT_ACCEPTED */
#define KRB5KDC_ERR_KEY_TOO_WEAK KRB5KDC_ERR_DH_KEY_PARAMETERS_NOT_ACCEPTED
#endif /* __KRB5_KDC_UTIL__ */
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