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Code Editor : kdb.h
/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */ /* * Copyright 1990, 1991, 2016 by the Massachusetts Institute of Technology. * All Rights Reserved. * * 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. */ /* * Copyright (C) 1998 by the FundsXpress, INC. * * All rights reserved. * * 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 FundsXpress. not be used in advertising or publicity pertaining * to distribution of the software without specific, written prior * permission. FundsXpress makes no representations about the suitability of * this software for any purpose. It is provided "as is" without express * or implied warranty. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ /* * Copyright 2009 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* KDC Database interface definitions */ /* This API is not considered as stable as the main krb5 API. * * - We may make arbitrary incompatible changes between feature * releases (e.g. from 1.7 to 1.8). * - We will make some effort to avoid making incompatible changes for * bugfix releases, but will make them if necessary. */ #ifndef KRB5_KDB5__ #define KRB5_KDB5__ #include <time.h> #include <krb5.h> /* This version will be incremented when incompatible changes are made to the * KDB API, and will be kept in sync with the libkdb major version. */ #define KRB5_KDB_API_VERSION 10 /* Salt types */ #define KRB5_KDB_SALTTYPE_NORMAL 0 /* #define KRB5_KDB_SALTTYPE_V4 1 */ #define KRB5_KDB_SALTTYPE_NOREALM 2 #define KRB5_KDB_SALTTYPE_ONLYREALM 3 #define KRB5_KDB_SALTTYPE_SPECIAL 4 /* #define KRB5_KDB_SALTTYPE_AFS3 5 */ #define KRB5_KDB_SALTTYPE_CERTHASH 6 /* Attributes */ #define KRB5_KDB_DISALLOW_POSTDATED 0x00000001 #define KRB5_KDB_DISALLOW_FORWARDABLE 0x00000002 #define KRB5_KDB_DISALLOW_TGT_BASED 0x00000004 #define KRB5_KDB_DISALLOW_RENEWABLE 0x00000008 #define KRB5_KDB_DISALLOW_PROXIABLE 0x00000010 #define KRB5_KDB_DISALLOW_DUP_SKEY 0x00000020 #define KRB5_KDB_DISALLOW_ALL_TIX 0x00000040 #define KRB5_KDB_REQUIRES_PRE_AUTH 0x00000080 #define KRB5_KDB_REQUIRES_HW_AUTH 0x00000100 #define KRB5_KDB_REQUIRES_PWCHANGE 0x00000200 #define KRB5_KDB_DISALLOW_SVR 0x00001000 #define KRB5_KDB_PWCHANGE_SERVICE 0x00002000 #define KRB5_KDB_SUPPORT_DESMD5 0x00004000 #define KRB5_KDB_NEW_PRINC 0x00008000 #define KRB5_KDB_OK_AS_DELEGATE 0x00100000 #define KRB5_KDB_OK_TO_AUTH_AS_DELEGATE 0x00200000 /* S4U2Self OK */ #define KRB5_KDB_NO_AUTH_DATA_REQUIRED 0x00400000 #define KRB5_KDB_LOCKDOWN_KEYS 0x00800000 /* Creation flags */ #define KRB5_KDB_CREATE_BTREE 0x00000001 #define KRB5_KDB_CREATE_HASH 0x00000002 /* Entry get flags */ /* Okay to generate a referral on lookup */ #define KRB5_KDB_FLAG_REFERRAL_OK 0x00000010 /* Client principal lookup (client referrals only) */ #define KRB5_KDB_FLAG_CLIENT 0x00000040 /* Map cross-realm principals */ #define KRB5_KDB_FLAG_MAP_PRINCIPALS 0x00000080 /* Protocol transition */ #define KRB5_KDB_FLAG_PROTOCOL_TRANSITION 0x00000100 /* Constrained delegation */ #define KRB5_KDB_FLAG_CONSTRAINED_DELEGATION 0x00000200 /* User-to-user */ #define KRB5_KDB_FLAG_USER_TO_USER 0x00000800 /* Cross-realm */ #define KRB5_KDB_FLAG_CROSS_REALM 0x00001000 /* Issuing referral */ #define KRB5_KDB_FLAG_ISSUING_REFERRAL 0x00004000 #define KRB5_KDB_FLAGS_S4U ( KRB5_KDB_FLAG_PROTOCOL_TRANSITION | \ KRB5_KDB_FLAG_CONSTRAINED_DELEGATION ) /* KDB iteration flags */ #define KRB5_DB_ITER_WRITE 0x00000001 #define KRB5_DB_ITER_REV 0x00000002 #define KRB5_DB_ITER_RECURSE 0x00000004 /* String attribute names recognized by krb5 */ #define KRB5_KDB_SK_PAC_PRIVSVR_ENCTYPE "pac_privsvr_enctype" #define KRB5_KDB_SK_SESSION_ENCTYPES "session_enctypes" #define KRB5_KDB_SK_REQUIRE_AUTH "require_auth" #define KRB5_KDB_SK_OPTIONAL_PAC_TKT_CHKSUM "optional_pac_tkt_chksum" #if !defined(_WIN32) /* * Note --- these structures cannot be modified without changing the * database version number in libkdb.a, but should be expandable by * adding new tl_data types. */ typedef struct _krb5_tl_data { struct _krb5_tl_data* tl_data_next; /* NOT saved */ krb5_int16 tl_data_type; krb5_ui_2 tl_data_length; krb5_octet * tl_data_contents; } krb5_tl_data; /* String attributes (currently stored inside tl-data) map C string keys to * values. They can be set via kadmin and consumed by KDC plugins. */ typedef struct krb5_string_attr_st { char *key; char *value; } krb5_string_attr; /* * If this ever changes up the version number and make the arrays be as * big as necessary. * * Currently the first type is the enctype and the second is the salt type. */ typedef struct _krb5_key_data { krb5_int16 key_data_ver; /* Version */ krb5_ui_2 key_data_kvno; /* Key Version */ krb5_int16 key_data_type[2]; /* Array of types */ krb5_ui_2 key_data_length[2]; /* Array of lengths */ krb5_octet * key_data_contents[2]; /* Array of pointers */ } krb5_key_data; #define KRB5_KDB_V1_KEY_DATA_ARRAY 2 /* # of array elements */ typedef struct _krb5_keysalt { krb5_int16 type; krb5_data data; /* Length, data */ } krb5_keysalt; /* * A principal database entry. Extensions to this structure currently use the * tl_data list. The e_data and e_length fields are not used by any calling * code except kdb5_util dump and load, which marshal and unmarshal the array * in the dump record. KDB modules may use these fields internally as long as * they set e_length appropriately (non-zero if the data should be marshalled * across dump and load, zero if not) and handle null e_data values in * caller-constructed principal entries. */ typedef struct _krb5_db_entry_new { krb5_magic magic; /* NOT saved */ krb5_ui_2 len; krb5_ui_4 mask; /* members currently changed/set */ krb5_flags attributes; krb5_deltat max_life; krb5_deltat max_renewable_life; krb5_timestamp expiration; /* When the client expires */ krb5_timestamp pw_expiration; /* When its passwd expires */ krb5_timestamp last_success; /* Last successful passwd */ krb5_timestamp last_failed; /* Last failed passwd attempt */ krb5_kvno fail_auth_count; /* # of failed passwd attempt */ krb5_int16 n_tl_data; krb5_int16 n_key_data; krb5_ui_2 e_length; /* Length of extra data */ krb5_octet * e_data; /* Extra data to be saved */ krb5_principal princ; /* Length, data */ krb5_tl_data * tl_data; /* Linked list */ /* key_data must be sorted by kvno in descending order. */ krb5_key_data * key_data; /* Array */ } krb5_db_entry; typedef struct _osa_policy_ent_t { int version; char *name; krb5_ui_4 pw_min_life; krb5_ui_4 pw_max_life; krb5_ui_4 pw_min_length; krb5_ui_4 pw_min_classes; krb5_ui_4 pw_history_num; krb5_ui_4 policy_refcnt; /* no longer used */ /* Only valid if version > 1 */ krb5_ui_4 pw_max_fail; /* pwdMaxFailure */ krb5_ui_4 pw_failcnt_interval; /* pwdFailureCountInterval */ krb5_ui_4 pw_lockout_duration; /* pwdLockoutDuration */ /* Only valid if version > 2 */ krb5_ui_4 attributes; krb5_ui_4 max_life; krb5_ui_4 max_renewable_life; char * allowed_keysalts; krb5_int16 n_tl_data; krb5_tl_data * tl_data; } osa_policy_ent_rec, *osa_policy_ent_t; typedef void (*osa_adb_iter_policy_func) (void *, osa_policy_ent_t); typedef struct __krb5_key_salt_tuple { krb5_enctype ks_enctype; krb5_int32 ks_salttype; } krb5_key_salt_tuple; #define KRB5_KDB_MAGIC_NUMBER 0xdbdbdbdb #define KRB5_KDB_V1_BASE_LENGTH 38 #define KRB5_KDB_MAX_ALLOWED_KS_LEN 512 #define KRB5_TL_LAST_PWD_CHANGE 0x0001 #define KRB5_TL_MOD_PRINC 0x0002 #define KRB5_TL_KADM_DATA 0x0003 #define KRB5_TL_KADM5_E_DATA 0x0004 #define KRB5_TL_RB1_CHALLENGE 0x0005 #ifdef SECURID #define KRB5_TL_SECURID_STATE 0x0006 #endif /* SECURID */ #define KRB5_TL_USER_CERTIFICATE 0x0007 #define KRB5_TL_MKVNO 0x0008 #define KRB5_TL_ACTKVNO 0x0009 #define KRB5_TL_MKEY_AUX 0x000a /* String attributes may not always be represented in tl-data. kadmin clients * must use the get_strings and set_string RPCs. */ #define KRB5_TL_STRING_ATTRS 0x000b #define KRB5_TL_PAC_LOGON_INFO 0x0100 /* NDR encoded validation info */ #define KRB5_TL_SERVER_REFERRAL 0x0200 /* ASN.1 encoded ServerReferralInfo */ #define KRB5_TL_SVR_REFERRAL_DATA 0x0300 /* ASN.1 encoded PA-SVR-REFERRAL-DATA */ #define KRB5_TL_CONSTRAINED_DELEGATION_ACL 0x0400 /* Each entry is a permitted SPN */ #define KRB5_TL_LM_KEY 0x0500 /* LM OWF */ #define KRB5_TL_X509_SUBJECT_ISSUER_NAME 0x0600 /* <I>IssuerDN<S>SubjectDN */ #define KRB5_TL_LAST_ADMIN_UNLOCK 0x0700 /* Timestamp of admin unlock */ #define KRB5_TL_DB_ARGS 0x7fff /* version number for KRB5_TL_ACTKVNO data */ #define KRB5_TL_ACTKVNO_VER 1 /* version number for KRB5_TL_MKEY_AUX data */ #define KRB5_TL_MKEY_AUX_VER 1 typedef struct _krb5_actkvno_node { struct _krb5_actkvno_node *next; krb5_kvno act_kvno; krb5_timestamp act_time; } krb5_actkvno_node; typedef struct _krb5_mkey_aux_node { struct _krb5_mkey_aux_node *next; krb5_kvno mkey_kvno; /* kvno of mkey protecting the latest_mkey */ krb5_key_data latest_mkey; /* most recent mkey */ } krb5_mkey_aux_node; typedef struct _krb5_keylist_node { krb5_keyblock keyblock; krb5_kvno kvno; struct _krb5_keylist_node *next; } krb5_keylist_node; /* * Determines the number of failed KDC requests before DISALLOW_ALL_TIX is set * on the principal. */ #define KRB5_MAX_FAIL_COUNT 5 /* XXX depends on knowledge of krb5_parse_name() formats */ #define KRB5_KDB_M_NAME "K/M" /* Kerberos/Master */ /* prompts used by default when reading the KDC password from the keyboard. */ #define KRB5_KDC_MKEY_1 "Enter KDC database master key" #define KRB5_KDC_MKEY_2 "Re-enter KDC database master key to verify" extern char *krb5_mkey_pwd_prompt1; extern char *krb5_mkey_pwd_prompt2; /* * These macros specify the encoding of data within the database. * * Data encoding is little-endian. */ #ifdef _KRB5_INT_H #include "k5-platform.h" #define krb5_kdb_decode_int16(cp, i16) \ *((krb5_int16 *) &(i16)) = load_16_le(cp) #define krb5_kdb_decode_int32(cp, i32) \ *((krb5_int32 *) &(i32)) = load_32_le(cp) #define krb5_kdb_encode_int16(i16, cp) store_16_le(i16, cp) #define krb5_kdb_encode_int32(i32, cp) store_32_le(i32, cp) #endif /* _KRB5_INT_H */ #define KRB5_KDB_OPEN_RW 0 #define KRB5_KDB_OPEN_RO 1 #ifndef KRB5_KDB_SRV_TYPE_KDC #define KRB5_KDB_SRV_TYPE_KDC 0x0100 #endif #ifndef KRB5_KDB_SRV_TYPE_ADMIN #define KRB5_KDB_SRV_TYPE_ADMIN 0x0200 #endif /* 0x0300 was KRB5_KDB_SRV_TYPE_PASSWD but it is no longer used. */ #ifndef KRB5_KDB_SRV_TYPE_OTHER #define KRB5_KDB_SRV_TYPE_OTHER 0x0400 #endif #define KRB5_KDB_OPT_SET_DB_NAME 0 #define KRB5_KDB_OPT_SET_LOCK_MODE 1 #define KRB5_DB_LOCKMODE_SHARED 0x0001 #define KRB5_DB_LOCKMODE_EXCLUSIVE 0x0002 #define KRB5_DB_LOCKMODE_PERMANENT 0x0008 /* libkdb.spec */ krb5_error_code krb5_db_setup_lib_handle(krb5_context kcontext); krb5_error_code krb5_db_open( krb5_context kcontext, char **db_args, int mode ); krb5_error_code krb5_db_init ( krb5_context kcontext ); krb5_error_code krb5_db_create ( krb5_context kcontext, char **db_args ); krb5_error_code krb5_db_inited ( krb5_context kcontext ); krb5_error_code kdb5_db_create ( krb5_context kcontext, char **db_args ); krb5_error_code krb5_db_fini ( krb5_context kcontext ); const char * krb5_db_errcode2string ( krb5_context kcontext, long err_code ); krb5_error_code krb5_db_destroy ( krb5_context kcontext, char **db_args ); krb5_error_code krb5_db_promote ( krb5_context kcontext, char **db_args ); krb5_error_code krb5_db_get_age ( krb5_context kcontext, char *db_name, time_t *t ); krb5_error_code krb5_db_lock ( krb5_context kcontext, int lock_mode ); krb5_error_code krb5_db_unlock ( krb5_context kcontext ); krb5_error_code krb5_db_get_principal ( krb5_context kcontext, krb5_const_principal search_for, unsigned int flags, krb5_db_entry **entry ); void krb5_db_free_principal ( krb5_context kcontext, krb5_db_entry *entry ); krb5_error_code krb5_db_put_principal ( krb5_context kcontext, krb5_db_entry *entry ); krb5_error_code krb5_db_delete_principal ( krb5_context kcontext, krb5_principal search_for ); krb5_error_code krb5_db_rename_principal ( krb5_context kcontext, krb5_principal source, krb5_principal target ); /* * Iterate over principals in the KDB. If the callback may write to the DB, * the caller must get an exclusive lock with krb5_db_lock before iterating, * and release it with krb5_db_unlock after iterating. */ krb5_error_code krb5_db_iterate ( krb5_context kcontext, char *match_entry, int (*func) (krb5_pointer, krb5_db_entry *), krb5_pointer func_arg, krb5_flags iterflags ); krb5_error_code krb5_db_store_master_key ( krb5_context kcontext, char *keyfile, krb5_principal mname, krb5_kvno kvno, krb5_keyblock *key, char *master_pwd); krb5_error_code krb5_db_store_master_key_list ( krb5_context kcontext, char *keyfile, krb5_principal mname, char *master_pwd); krb5_error_code krb5_db_fetch_mkey ( krb5_context context, krb5_principal mname, krb5_enctype etype, krb5_boolean fromkeyboard, krb5_boolean twice, char *db_args, krb5_kvno *kvno, krb5_data *salt, krb5_keyblock *key); krb5_error_code krb5_db_fetch_mkey_list( krb5_context context, krb5_principal mname, const krb5_keyblock * mkey ); krb5_error_code krb5_dbe_find_enctype( krb5_context kcontext, krb5_db_entry *dbentp, krb5_int32 ktype, krb5_int32 stype, krb5_int32 kvno, krb5_key_data **kdatap); krb5_error_code krb5_dbe_search_enctype ( krb5_context kcontext, krb5_db_entry *dbentp, krb5_int32 *start, krb5_int32 ktype, krb5_int32 stype, krb5_int32 kvno, krb5_key_data **kdatap); krb5_error_code krb5_db_setup_mkey_name ( krb5_context context, const char *keyname, const char *realm, char **fullname, krb5_principal *principal); /** * Decrypts the key given in @@a key_data. If @a mkey is specified, that * master key is used. If @a mkey is NULL, then all master keys are tried. */ krb5_error_code krb5_dbe_decrypt_key_data( krb5_context context, const krb5_keyblock * mkey, const krb5_key_data * key_data, krb5_keyblock * dbkey, krb5_keysalt * keysalt); krb5_error_code krb5_dbe_encrypt_key_data( krb5_context context, const krb5_keyblock * mkey, const krb5_keyblock * dbkey, const krb5_keysalt * keysalt, int keyver, krb5_key_data * key_data); krb5_error_code krb5_dbe_fetch_act_key_list(krb5_context context, krb5_principal princ, krb5_actkvno_node **act_key_list); krb5_error_code krb5_dbe_find_act_mkey( krb5_context context, krb5_actkvno_node * act_mkey_list, krb5_kvno * act_kvno, krb5_keyblock ** act_mkey); krb5_error_code krb5_dbe_find_mkey( krb5_context context, krb5_db_entry * entry, krb5_keyblock ** mkey); /* Set *mkvno to mkvno in entry tl_data, or 0 if not present. */ krb5_error_code krb5_dbe_lookup_mkvno( krb5_context context, krb5_db_entry * entry, krb5_kvno * mkvno); krb5_keylist_node * krb5_db_mkey_list_alias( krb5_context kcontext ); /* Set *mkvno to mkvno in entry tl_data, or minimum value from mkey_list. */ krb5_error_code krb5_dbe_get_mkvno( krb5_context context, krb5_db_entry * entry, krb5_kvno * mkvno); krb5_error_code krb5_dbe_lookup_mod_princ_data( krb5_context context, krb5_db_entry * entry, krb5_timestamp * mod_time, krb5_principal * mod_princ); krb5_error_code krb5_dbe_lookup_mkey_aux( krb5_context context, krb5_db_entry * entry, krb5_mkey_aux_node ** mkey_aux_data_list); krb5_error_code krb5_dbe_update_mkvno( krb5_context context, krb5_db_entry * entry, krb5_kvno mkvno); krb5_error_code krb5_dbe_lookup_actkvno( krb5_context context, krb5_db_entry * entry, krb5_actkvno_node ** actkvno_list); krb5_error_code krb5_dbe_update_mkey_aux( krb5_context context, krb5_db_entry * entry, krb5_mkey_aux_node * mkey_aux_data_list); krb5_error_code krb5_dbe_update_actkvno(krb5_context context, krb5_db_entry * entry, const krb5_actkvno_node *actkvno_list); krb5_error_code krb5_dbe_update_last_pwd_change( krb5_context context, krb5_db_entry * entry, krb5_timestamp stamp); krb5_error_code krb5_dbe_update_last_admin_unlock( krb5_context context, krb5_db_entry * entry, krb5_timestamp stamp); krb5_error_code krb5_dbe_lookup_tl_data( krb5_context context, krb5_db_entry * entry, krb5_tl_data * ret_tl_data); krb5_error_code krb5_dbe_create_key_data( krb5_context context, krb5_db_entry * entry); krb5_error_code krb5_dbe_update_mod_princ_data( krb5_context context, krb5_db_entry * entry, krb5_timestamp mod_date, krb5_const_principal mod_princ); /* * These are wrappers around realloc() and free(). Applications and KDB * modules can use them when manipulating principal and policy entries to * ensure that they allocate and free memory in a manner compatible with the * library. Using libkrb5 or libkbd5 functions to construct values (such as * krb5_copy_principal() to construct the princ field of a krb5_db_entry) is * also safe. On Unix platforms, just using malloc() and free() is safe as * long as the application or module does not use a malloc replacement. */ void *krb5_db_alloc( krb5_context kcontext, void *ptr, size_t size ); void krb5_db_free( krb5_context kcontext, void *ptr); krb5_error_code krb5_dbe_lookup_last_pwd_change( krb5_context context, krb5_db_entry * entry, krb5_timestamp * stamp); krb5_error_code krb5_dbe_lookup_last_admin_unlock( krb5_context context, krb5_db_entry * entry, krb5_timestamp * stamp); /* Retrieve the set of string attributes in entry, in no particular order. * Free *strings_out with krb5_dbe_free_strings when done. */ krb5_error_code krb5_dbe_get_strings(krb5_context context, krb5_db_entry *entry, krb5_string_attr **strings_out, int *count_out); /* Retrieve a single string attribute from entry, or NULL if there is no * attribute for key. Free *value_out with krb5_dbe_free_string when done. */ krb5_error_code krb5_dbe_get_string(krb5_context context, krb5_db_entry *entry, const char *key, char **value_out); /* Change or add a string attribute in entry, or delete it if value is NULL. */ krb5_error_code krb5_dbe_set_string(krb5_context context, krb5_db_entry *entry, const char *key, const char *value); krb5_error_code krb5_dbe_delete_tl_data( krb5_context context, krb5_db_entry * entry, krb5_int16 tl_data_type); krb5_error_code krb5_db_update_tl_data(krb5_context context, krb5_int16 * n_tl_datap, krb5_tl_data **tl_datap, krb5_tl_data * new_tl_data); krb5_error_code krb5_dbe_update_tl_data( krb5_context context, krb5_db_entry * entry, krb5_tl_data * new_tl_data); /* Compute the salt for a key data entry given the corresponding principal. */ krb5_error_code krb5_dbe_compute_salt(krb5_context context, const krb5_key_data *key, krb5_const_principal princ, krb5_int16 *salttype_out, krb5_data **salt_out); /* * Modify the key data of entry to explicitly store salt values using the * KRB5_KDB_SALTTYPE_SPECIAL salt type. */ krb5_error_code krb5_dbe_specialize_salt(krb5_context context, krb5_db_entry *entry); krb5_error_code krb5_dbe_cpw( krb5_context kcontext, krb5_keyblock * master_key, krb5_key_salt_tuple * ks_tuple, int ks_tuple_count, char * passwd, int new_kvno, krb5_boolean keepold, krb5_db_entry * db_entry); krb5_error_code krb5_dbe_ark( krb5_context context, krb5_keyblock * master_key, krb5_key_salt_tuple * ks_tuple, int ks_tuple_count, krb5_db_entry * db_entry); krb5_error_code krb5_dbe_crk( krb5_context context, krb5_keyblock * master_key, krb5_key_salt_tuple * ks_tuple, int ks_tuple_count, krb5_boolean keepold, krb5_db_entry * db_entry); krb5_error_code krb5_dbe_apw( krb5_context context, krb5_keyblock * master_key, krb5_key_salt_tuple * ks_tuple, int ks_tuple_count, char * passwd, krb5_db_entry * db_entry); int krb5_db_get_key_data_kvno( krb5_context context, int count, krb5_key_data * data); krb5_error_code krb5_db_check_transited_realms(krb5_context kcontext, const krb5_data *tr_contents, const krb5_data *client_realm, const krb5_data *server_realm); krb5_error_code krb5_db_check_policy_as(krb5_context kcontext, krb5_kdc_req *request, krb5_db_entry *client, krb5_db_entry *server, krb5_timestamp kdc_time, const char **status, krb5_pa_data ***e_data); krb5_error_code krb5_db_check_policy_tgs(krb5_context kcontext, krb5_kdc_req *request, krb5_db_entry *server, krb5_ticket *ticket, const char **status, krb5_pa_data ***e_data); void krb5_db_audit_as_req(krb5_context kcontext, krb5_kdc_req *request, const krb5_address *local_addr, const krb5_address *remote_addr, krb5_db_entry *client, krb5_db_entry *server, krb5_timestamp authtime, krb5_error_code error_code); void krb5_db_refresh_config(krb5_context kcontext); krb5_error_code krb5_db_check_allowed_to_delegate(krb5_context kcontext, krb5_const_principal client, const krb5_db_entry *server, krb5_const_principal proxy); krb5_error_code krb5_db_get_s4u_x509_principal(krb5_context kcontext, const krb5_data *client_cert, krb5_const_principal in_princ, unsigned int flags, krb5_db_entry **entry); krb5_error_code krb5_db_allowed_to_delegate_from(krb5_context context, krb5_const_principal client, krb5_const_principal server, krb5_pac server_pac, const krb5_db_entry *proxy); /** * Sort an array of @a krb5_key_data keys in descending order by their kvno. * Key data order within a kvno is preserved. * * @param key_data * The @a krb5_key_data array to sort. This is sorted in place so the * array will be modified. * @param key_data_length * The length of @a key_data. */ void krb5_dbe_sort_key_data(krb5_key_data *key_data, size_t key_data_length); krb5_error_code krb5_db_issue_pac(krb5_context context, unsigned int flags, krb5_db_entry *client, krb5_keyblock *replaced_reply_key, krb5_db_entry *server, krb5_db_entry *krbtgt, krb5_timestamp authtime, krb5_pac old_pac, krb5_pac new_pac, krb5_data ***auth_indicators); /* default functions. Should not be directly called */ /* * Default functions prototype */ krb5_error_code krb5_dbe_def_search_enctype( krb5_context kcontext, krb5_db_entry *dbentp, krb5_int32 *start, krb5_int32 ktype, krb5_int32 stype, krb5_int32 kvno, krb5_key_data **kdatap); krb5_error_code krb5_def_store_mkey_list( krb5_context context, char *keyfile, krb5_principal mname, krb5_keylist_node *keylist, char *master_pwd); krb5_error_code krb5_db_def_fetch_mkey( krb5_context context, krb5_principal mname, krb5_keyblock *key, krb5_kvno *kvno, char *db_args); krb5_error_code krb5_def_fetch_mkey_list( krb5_context context, krb5_principal mprinc, const krb5_keyblock *mkey, krb5_keylist_node **mkeys_list); krb5_error_code krb5_dbe_def_cpw( krb5_context context, krb5_keyblock * master_key, krb5_key_salt_tuple * ks_tuple, int ks_tuple_count, char * passwd, int new_kvno, krb5_boolean keepold, krb5_db_entry * db_entry); krb5_error_code krb5_dbe_def_decrypt_key_data( krb5_context context, const krb5_keyblock * mkey, const krb5_key_data * key_data, krb5_keyblock * dbkey, krb5_keysalt * keysalt); krb5_error_code krb5_dbe_def_encrypt_key_data( krb5_context context, const krb5_keyblock * mkey, const krb5_keyblock * dbkey, const krb5_keysalt * keysalt, int keyver, krb5_key_data * key_data); krb5_error_code krb5_db_def_rename_principal( krb5_context kcontext, krb5_const_principal source, krb5_const_principal target); krb5_error_code krb5_db_create_policy( krb5_context kcontext, osa_policy_ent_t policy); krb5_error_code krb5_db_get_policy ( krb5_context kcontext, char *name, osa_policy_ent_t *policy ); krb5_error_code krb5_db_put_policy( krb5_context kcontext, osa_policy_ent_t policy); krb5_error_code krb5_db_iter_policy( krb5_context kcontext, char *match_entry, osa_adb_iter_policy_func func, void *data); krb5_error_code krb5_db_delete_policy( krb5_context kcontext, char *policy); void krb5_db_free_policy( krb5_context kcontext, osa_policy_ent_t policy); krb5_error_code krb5_db_set_context(krb5_context, void *db_context); krb5_error_code krb5_db_get_context(krb5_context, void **db_context); void krb5_dbe_free_key_data_contents(krb5_context, krb5_key_data *); void krb5_dbe_free_key_list(krb5_context, krb5_keylist_node *); void krb5_dbe_free_actkvno_list(krb5_context, krb5_actkvno_node *); void krb5_dbe_free_mkey_aux_list(krb5_context, krb5_mkey_aux_node *); void krb5_dbe_free_tl_data(krb5_context, krb5_tl_data *); void krb5_dbe_free_strings(krb5_context, krb5_string_attr *, int count); void krb5_dbe_free_string(krb5_context, char *); /* * Register the KDB keytab type, allowing "KDB:" to be used as a keytab name. * For this type to work, the context used for keytab operations must have an * associated database handle (via krb5_db_open()). */ krb5_error_code krb5_db_register_keytab(krb5_context context); #define KRB5_KDB_DEF_FLAGS 0 #define KDB_MAX_DB_NAME 128 #define KDB_REALM_SECTION "realms" #define KDB_MODULE_POINTER "database_module" #define KDB_MODULE_DEF_SECTION "dbdefaults" #define KDB_MODULE_SECTION "dbmodules" #define KDB_LIB_POINTER "db_library" #define KDB_DATABASE_CONF_FILE DEFAULT_SECURE_PROFILE_PATH #define KDB_DATABASE_ENV_PROF KDC_PROFILE_ENV #define KRB5_KDB_OPEN_RW 0 #define KRB5_KDB_OPEN_RO 1 #define KRB5_KDB_OPT_SET_DB_NAME 0 #define KRB5_KDB_OPT_SET_LOCK_MODE 1 /* * This number indicates the date of the last incompatible change to the DAL. * The maj_ver field of the module's vtable structure must match this version. */ #define KRB5_KDB_DAL_MAJOR_VERSION 9 /* * Note the following when converting a module to DAL version 9: * * - get_authdata_info() and sign_authdata() have been removed, and issue_pac() * has been added. * * - check_allowed_to_delegate() must handle a null proxy argument, returning * success if server has any authorized delegation targets in the traditional * scheme. * * - allowed_to_delegate_from() accepts a krb5_pac parameter (in place * server_ad_info) for the impersonator's PAC. * * - check_allowed_to_delegate() and allowed_to_delegate_from() must return * KRB5KDC_ERR_BADOPTION on authorization failure. * * - the KRB5_KDB_FLAG_ISSUE_PAC and KRB5_FLAG_CLIENT_REFERRALS_ONLY flags have * been combined into KRB5_KDB_FLAG_CLIENT. * * - the KRB5_KDB_FLAG_CANONICALIZE flag has been renamed to * KRB5_KDB_FLAG_REFERRAL_OK, and is only passed to get_principal() when a * realm referral is allowed (AS client and TGS server lookups, when the * CANONICALIZE option is requested or, for AS requests, when the client is * an enterprise principal). As of DAL version 8 the KDB module should * always canonicalize aliases within a realm; the KDC will decide whether to * use the original or canonical principal. */ /* * A krb5_context can hold one database object. Modules should use * krb5_db_set_context and krb5_db_get_context to store state associated with * the database object. * * Some module functions are mandatory for KDC operation; others are optional * or apply only to administrative operations. If a function is optional, a * module can leave the function pointer as NULL. Alternatively, modules can * return KRB5_PLUGIN_OP_NOTSUPP when asked to perform an inapplicable action. * * Some module functions have default implementations which will call back into * the vtable interface. Leave these functions as NULL to use the default * implementations. * * The documentation in these comments describes the DAL as it is currently * implemented and used, not as it should be. So if anything seems off, that * probably means the current state of things is off. * * Modules must allocate memory for principal entries, policy entries, and * other structures using an allocator compatible with malloc() as seen by * libkdb5 and libkrb5. Modules may link against libkdb5 and call * krb5_db_alloc() to be certain that the same malloc implementation is used. */ typedef struct _kdb_vftabl { short int maj_ver; short int min_ver; /* * Mandatory: Invoked after the module library is loaded, when the first DB * using the module is opened, across all contexts. */ krb5_error_code (*init_library)(void); /* * Mandatory: Invoked before the module library is unloaded, after the last * DB using the module is closed, across all contexts. */ krb5_error_code (*fini_library)(void); /* * Mandatory: Initialize a database object. Profile settings should be * read from conf_section inside KDB_MODULE_SECTION. db_args communicates * command-line arguments for module-specific flags. mode will be one of * KRB5_KDB_OPEN_{RW,RO} or'd with one of * KRB5_KDB_SRV_TYPE_{KDC,ADMIN,PASSWD,OTHER}. */ krb5_error_code (*init_module)(krb5_context kcontext, char *conf_section, char **db_args, int mode); /* * Mandatory: Finalize the database object contained in a context. Free * any state contained in the db_context pointer and null it out. */ krb5_error_code (*fini_module)(krb5_context kcontext); /* * Optional: Initialize a database object while creating the underlying * database. conf_section and db_args have the same meaning as in * init_module. This function may return an error if the database already * exists. Used by kdb5_util create. * * If db_args contains the value "temporary", the module should create an * exclusively locked side copy of the database suitable for loading in a * propagation from primary to replica. This side copy will later be * promoted with promote_db, allowing complete updates of the DB with no * loss in read availability. If the module cannot comply with this * architecture, it should return an error. */ krb5_error_code (*create)(krb5_context kcontext, char *conf_section, char **db_args); /* * Optional: Destroy a database. conf_section and db_args have the same * meaning as in init_module. Used by kdb5_util destroy. In current * usage, the database is destroyed while open, so the module should handle * that. */ krb5_error_code (*destroy)(krb5_context kcontext, char *conf_section, char **db_args); /* * Deprecated: No longer used as of krb5 1.10; can be removed in the next * DAL revision. Modules should leave as NULL. */ krb5_error_code (*get_age)(krb5_context kcontext, char *db_name, time_t *age); /* * Optional: Lock the database, with semantics depending on the mode * argument: * * KRB5_DB_LOCKMODE_SHARED: Lock may coexist with other shared locks. * KRB5_DB_LOCKMODE_EXCLUSIVE: Lock may not coexist with other locks. * KRB5_DB_LOCKMODE_PERMANENT: Exclusive lock surviving process exit. * * Used by the "kadmin lock" command, incremental propagation, and * kdb5_util dump. Incremental propagation support requires shared locks * to operate. kdb5_util dump will continue unlocked if the module returns * KRB5_PLUGIN_OP_NOTSUPP. */ krb5_error_code (*lock)(krb5_context kcontext, int mode); /* Optional: Release a lock created with db_lock. */ krb5_error_code (*unlock)(krb5_context kcontext); /* * Mandatory: Set *entry to an allocated entry for the principal * search_for. If the principal is not found, return KRB5_KDB_NOENTRY. * * The meaning of flags are as follows: * * KRB5_KDB_FLAG_REFERRAL_OK: Set by the KDC when looking up entries for an * AS client with canonicalization requested or for an enterprise * principal, or for a TGS request server with canonicalization * requested. Determines whether the module should return out-of-realm * referrals. * * KRB5_KDB_FLAG_CLIENT: Set by the KDC when looking up a client principal * during an AS or TGS request. Affects how the module should return * out-of-realm referrals. * * KRB5_KDB_FLAG_MAP_PRINCIPALS: Set by the KDC when looking up the client * entry during TGS requests, except for S4U TGS requests and requests * where the server entry has the KRB5_KDB_NO_AUTH_DATA_REQUIRED * attribute. Indicates that the module should map foreign principals * to local principals if it supports doing so. * * KRB5_KDB_FLAG_PROTOCOL_TRANSITION: Set by the KDC when looking up the * client entry during an S4U2Self TGS request. This affects the PAC * information which should be included when authorization data is * generated; see the Microsoft S4U specification for details. * * KRB5_KDB_FLAG_CONSTRAINED_DELEGATION: Set by the KDC when looking up the * client entry during an S4U2Proxy TGS request. Also affects PAC * generation. * * KRB5_KDB_FLAG_CROSS_REALM: Set by the KDC after looking up a server * entry during a TGS request, if the header ticket was issued by a * different realm. * * KRB5_KDB_FLAG_ISSUING_REFERRAL: Set by the KDC after looking up a server * entry during a TGS request, if the requested server principal is not * part of the realm being served, and a referral or alternate TGT will * be issued instead. * * A module may return an in-realm alias by setting (*entry)->princ to the * canonical name. The KDC will decide based on the request whether to use * the requested name or the canonical name in the issued ticket. * * A module can return a referral to another realm if flags contains * KRB5_KDB_FLAG_REFERRAL_OK. If KRB5_KDB_FLAG_CLIENT is also set, the * module should return a referral by simply filling in an out-of-realm * name in (*entry)->princ and setting all other fields to NULL. * Otherwise, the module should return the entry for the cross-realm TGS of * the referred-to realm. */ krb5_error_code (*get_principal)(krb5_context kcontext, krb5_const_principal search_for, unsigned int flags, krb5_db_entry **entry); /* * Optional: Create or modify a principal entry. db_args communicates * command-line arguments for module-specific flags. * * The mask field of an entry indicates the changed fields. Mask values * are defined in kadmin's admin.h header. If KADM5_PRINCIPAL is set in * the mask, the entry is new; otherwise it already exists. All fields of * an entry are expected to contain correct values, regardless of whether * they are specified in the mask, so it is acceptable for a module to * ignore the mask and update the entire entry. */ krb5_error_code (*put_principal)(krb5_context kcontext, krb5_db_entry *entry, char **db_args); /* * Optional: Delete the entry for the principal search_for. If the * principal did not exist, return KRB5_KDB_NOENTRY. */ krb5_error_code (*delete_principal)(krb5_context kcontext, krb5_const_principal search_for); /* * Optional with default: Rename a principal. If the source principal does * not exist, return KRB5_KDB_NOENTRY. If the target exists, return an * error. * * NOTE: If the module chooses to implement a custom function for renaming * a principal instead of using the default, then rename operations will * fail if iprop logging is enabled. */ krb5_error_code (*rename_principal)(krb5_context kcontext, krb5_const_principal source, krb5_const_principal target); /* * Optional: For each principal entry in the database, invoke func with the * arguments func_arg and the entry data. If match_entry is specified, the * module may narrow the iteration to principal names matching that regular * expression; a module may alternatively ignore match_entry. */ krb5_error_code (*iterate)(krb5_context kcontext, char *match_entry, int (*func)(krb5_pointer, krb5_db_entry *), krb5_pointer func_arg, krb5_flags iterflags); /* * Optional: Create a password policy entry. Return an error if the policy * already exists. */ krb5_error_code (*create_policy)(krb5_context kcontext, osa_policy_ent_t policy); /* * Optional: Set *policy to the policy entry of the specified name. If the * entry does not exist, return KRB5_KDB_NOENTRY. */ krb5_error_code (*get_policy)(krb5_context kcontext, char *name, osa_policy_ent_t *policy); /* * Optional: Modify an existing password policy entry to match the values * in policy. Return an error if the policy does not already exist. */ krb5_error_code (*put_policy)(krb5_context kcontext, osa_policy_ent_t policy); /* * Optional: For each password policy entry in the database, invoke func * with the arguments data and the entry data. If match_entry is * specified, the module may narrow the iteration to policy names matching * that regular expression; a module may alternatively ignore match_entry. */ krb5_error_code (*iter_policy)(krb5_context kcontext, char *match_entry, osa_adb_iter_policy_func func, void *data); /* * Optional: Delete the password policy entry with the name policy. Return * an error if the entry does not exist. */ krb5_error_code (*delete_policy)(krb5_context kcontext, char *policy); /* * Optional with default: Retrieve a master keyblock from the stash file * db_args, filling in *key and *kvno. mname is the name of the master * principal for the realm. * * The default implementation reads the master keyblock from a keytab or * old-format stash file. */ krb5_error_code (*fetch_master_key)(krb5_context kcontext, krb5_principal mname, krb5_keyblock *key, krb5_kvno *kvno, char *db_args); /* * Optional with default: Given a keyblock for some version of the * database's master key, fetch the decrypted master key values from the * database and store the list into *mkeys_list. The caller will free * *mkeys_list using a libkdb5 function which uses the standard free() * function, so the module must not use a custom allocator. * * The caller may not know the version number of the master key it has, in * which case it will pass IGNORE_VNO. * * The default implementation ignores kvno and tries the key against the * current master key data and all KRB5_TL_MKEY_AUX values, which contain * copies of the master keys encrypted with old master keys. */ krb5_error_code (*fetch_master_key_list)(krb5_context kcontext, krb5_principal mname, const krb5_keyblock *key, krb5_keylist_node **mkeys_list); /* * Optional with default: Save a list of master keyblocks, obtained from * fetch_master_key_list, into the stash file db_arg. The caller will set * master_pwd to NULL, so the module should just ignore it. mname is the * name of the master principal for the realm. * * The default implementation saves the list of master keys in a * keytab-format file. */ krb5_error_code (*store_master_key_list)(krb5_context kcontext, char *db_arg, krb5_principal mname, krb5_keylist_node *keylist, char *master_pwd); /* * Optional with default: Starting at position *start, scan the key data of * a database entry for a key matching the enctype ktype, the salt type * stype, and the version kvno. Store the resulting key into *kdatap and * set *start to the position after the key found. If ktype is negative, * match any enctype. If stype is negative, match any salt type. If kvno * is zero or negative, find the most recent key version satisfying the * other constraints. */ krb5_error_code (*dbe_search_enctype)(krb5_context kcontext, krb5_db_entry *dbentp, krb5_int32 *start, krb5_int32 ktype, krb5_int32 stype, krb5_int32 kvno, krb5_key_data **kdatap); /* * Optional with default: Change the key data for db_entry to include keys * derived from the password passwd in each of the specified key-salt * types, at version new_kvno. Discard the old key data if keepold is not * set. * * The default implementation uses the keyblock master_key to encrypt each * new key, via the function encrypt_key_data. */ krb5_error_code (*change_pwd)(krb5_context context, krb5_keyblock *master_key, krb5_key_salt_tuple *ks_tuple, int ks_tuple_count, char *passwd, int new_kvno, krb5_boolean keepold, krb5_db_entry *db_entry); /* * Optional: Promote a temporary database to be the live one. context must * be initialized with an exclusively locked database created with the * "temporary" db_arg. On success, the database object contained in * context will be finalized. * * This method is used by kdb5_util load to replace the live database with * minimal loss of read availability. */ krb5_error_code (*promote_db)(krb5_context context, char *conf_section, char **db_args); /* * Optional with default: Decrypt the key in key_data with master keyblock * mkey, placing the result into dbkey. Copy the salt from key_data, if * any, into keysalt. Either dbkey or keysalt may be left unmodified on * successful return if key_data does not contain key or salt information. * * The default implementation expects the encrypted key (in krb5_c_encrypt * format) to be stored in key_data_contents[0], with length given by * key_data_length[0]. If key_data_ver is 2, it expects the salt to be * stored, unencrypted, in key_data_contents[1], with length given by * key_data_length[1]. */ krb5_error_code (*decrypt_key_data)(krb5_context kcontext, const krb5_keyblock *mkey, const krb5_key_data *key_data, krb5_keyblock *dbkey, krb5_keysalt *keysalt); /* * Optional with default: Encrypt dbkey with master keyblock mkey, placing * the result into key_data along with keysalt. * * The default implementation stores the encrypted key (in krb5_c_encrypt * format) in key_data_contents[0] and the length in key_data_length[0]. * If keysalt is specified, it sets key_data_ver to 2, and stores the salt * in key_data_contents[1] and its length in key_data_length[1]. If * keysalt is not specified, key_data_ver is set to 1. */ krb5_error_code (*encrypt_key_data)(krb5_context kcontext, const krb5_keyblock *mkey, const krb5_keyblock *dbkey, const krb5_keysalt *keysalt, int keyver, krb5_key_data *key_data); /* * Optional: Perform a policy check on a cross-realm ticket's transited * field. Return 0 if the check authoritatively succeeds, * KRB5_PLUGIN_NO_HANDLE to use the core transited-checking mechanisms, or * another error (other than KRB5_PLUGIN_OP_NOTSUPP) if the check fails. */ krb5_error_code (*check_transited_realms)(krb5_context kcontext, const krb5_data *tr_contents, const krb5_data *client_realm, const krb5_data *server_realm); /* * Optional: Perform a policy check on an AS request, in addition to the * standard policy checks. Return 0 if the AS request is allowed. If the * AS request is not allowed: * - Place a short string literal into *status. * - If desired, place data into e_data. Any data placed here will be * freed by the caller using the standard free function. * - Return an appropriate error (such as KRB5KDC_ERR_POLICY). */ krb5_error_code (*check_policy_as)(krb5_context kcontext, krb5_kdc_req *request, krb5_db_entry *client, krb5_db_entry *server, krb5_timestamp kdc_time, const char **status, krb5_pa_data ***e_data); /* * Optional: Perform a policy check on a TGS request, in addition to the * standard policy checks. Return 0 if the TGS request is allowed. If the * TGS request is not allowed: * - Place a short string literal into *status. * - If desired, place data into e_data. Any data placed here will be * freed by the caller using the standard free function. * - Return an appropriate error (such as KRB5KDC_ERR_POLICY). * The input parameter ticket contains the TGT used in the TGS request. */ krb5_error_code (*check_policy_tgs)(krb5_context kcontext, krb5_kdc_req *request, krb5_db_entry *server, krb5_ticket *ticket, const char **status, krb5_pa_data ***e_data); /* * Optional: This method informs the module of a successful or unsuccessful * AS request. */ void (*audit_as_req)(krb5_context kcontext, krb5_kdc_req *request, const krb5_address *local_addr, const krb5_address *remote_addr, krb5_db_entry *client, krb5_db_entry *server, krb5_timestamp authtime, krb5_error_code error_code); /* Note: there is currently no method for auditing TGS requests. */ /* * Optional: This method informs the module of a request to reload * configuration or other state (that is, the KDC received a SIGHUP). */ void (*refresh_config)(krb5_context kcontext); /* * Optional: Perform a policy check on server being allowed to obtain * tickets from client to proxy. If proxy is NULL, check if server has any * authorized delegation targets (client will also be NULL in this case). * (Note that proxy is the target of the delegation, not the delegating * service; the term "proxy" is from the viewpoint of the delegating * service asking another service to perform some of its work in the * authentication context of the client. This terminology comes from the * Microsoft S4U protocol documentation.) Return 0 if policy allows * delegation to the specified target (or to any target if proxy is NULL), * or KRB5KDC_ERR_BADOPTION if not. If this method is not implemented, all * S4U2Proxy delegation requests will be rejected. */ krb5_error_code (*check_allowed_to_delegate)(krb5_context context, krb5_const_principal client, const krb5_db_entry *server, krb5_const_principal proxy); /* * Optional: Free the e_data pointer of a database entry. If this method * is not implemented, the e_data pointer in principal entries will be * freed with free() as seen by libkdb5. */ void (*free_principal_e_data)(krb5_context kcontext, krb5_octet *e_data); /* * Optional: get a client principal entry based on an X.509 certificate. * * If flags include KRB5_KDB_FLAG_REFERRAL_OK, the certificate was * presented in an AS request. princ->realm indicates the request realm, * but the data components should be ignored. The module can return an * out-of-realm client referral as it would for get_principal(). * * Otherwise, princ is from a TGS request. If it contains data components * (and not just a realm), the module should verify that it is the same as * the lookup result for client_cert. The module should not return a * referral. */ krb5_error_code (*get_s4u_x509_principal)(krb5_context kcontext, const krb5_data *client_cert, krb5_const_principal princ, unsigned int flags, krb5_db_entry **entry_out); /* * Optional: Perform a policy check on server being allowed to obtain * tickets from client to proxy. This method is similar to * check_allowed_to_delegate, but it operates on the target server DB entry * (called "proxy" here as in Microsoft's protocol documentation) rather * than the intermediate server entry. server_pac is the verified PAC from * the authdata of the intermediate server. Return 0 if policy allows the * delegation, or KRB5KDC_ERR_BADOPTION if not. * * This method is called for S4U2Proxy requests and implements the * resource-based constrained delegation variant, which can support * cross-realm delegation. If this method is not implemented or if it * returns a policy error, the KDC will fall back to * check_allowed_to_delegate if the intermediate and target servers are in * the same realm and the evidence ticket is forwardable. */ krb5_error_code (*allowed_to_delegate_from)(krb5_context context, krb5_const_principal client, krb5_const_principal server, krb5_pac server_pac, const krb5_db_entry *proxy); /* * Optional: Add buffers to new_pac using krb5_pac_add_buffer() before it * is signed. * * The caller will handle the following buffer types, so do not copy or add * them: * * KRB5_PAC_SERVER_CHECKSUM * KRB5_PAC_PRIVSVR_CHECKSUM * KRB5_PAC_TICKET_CHECKSUM * KRB5_PAC_CLIENT_INFO * KRB5_PAC_DELEGATION_INFO * * For TGS requests, old_pac is the PAC of the header ticket, except when * KRB5_KDB_FLAG_CONTRAINED_DELEGATION is present in flags, in which case * it is the PAC of the second ticket. If * KRB5_KDB_FLAG_PROTOCOL_TRANSITION is present in flags and client is not * NULL, old_pac is the PAC of the requesting service, not the subject of * the S4U2Self request, and its buffers should not be copied into new_pac. * The signatures and PAC_CLIENT_INFO of old_pac have been verified by the * caller. * * If replaced_reply_key is not null, the request is an AS request and the * reply key was replaced by a preauth mechanism such as PKINIT, meaning * the Kerberos password or long-term key was not used. The module may use * this key to encrypt a PAC_CREDENTIALS_INFO buffer containing credentials * (such as an NTLM hash) that the client would ordinarily derive from the * Kerberos password or long-term key. * * server is the database entry of the server the ticket will be issued to, * which may be a referral TGS. * * signing_krbtgt is the database entry of the krbtgt principal used to * verify old_pac (or null if old_pac is null). If * KRB5_KDB_FLAG_CROSS_REALM is present in flags, this entry will be an * incoming cross-realm TGS, and the PAC fields should undergo appropriate * filtering based on the trust level of the cross-realm relationship. * * auth_indicators points to NULL or a null-terminated list of krb5_data * pointers, each containing an authentication indicator (RFC 8129). The * method may modify this list, or free it and replace *auth_indicators * with NULL, to change which auth indicators will be included in the * ticket. */ krb5_error_code (*issue_pac)(krb5_context context, unsigned int flags, krb5_db_entry *client, krb5_keyblock *replaced_reply_key, krb5_db_entry *server, krb5_db_entry *signing_krbtgt, krb5_timestamp authtime, krb5_pac old_pac, krb5_pac new_pac, krb5_data ***auth_indicators); /* End of minor version 0 for major version 9. */ } kdb_vftabl; #endif /* !defined(_WIN32) */ #endif /* KRB5_KDB5__ */
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