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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* Copyright 1990,1991 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 <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 6
/* 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
/* Creation flags */
#define KRB5_KDB_CREATE_BTREE 0x00000001
#define KRB5_KDB_CREATE_HASH 0x00000002
/* Private flag used to indicate principal is local TGS */
#define KRB5_KDB_TICKET_GRANTING_SERVICE 0x01000000
/* Private flag used to indicate xrealm relationship is non-transitive */
#define KRB5_KDB_XREALM_NON_TRANSITIVE 0x02000000
/* Entry get flags */
/* Name canonicalization requested */
#define KRB5_KDB_FLAG_CANONICALIZE 0x00000010
/* Include authorization data generated by backend */
#define KRB5_KDB_FLAG_INCLUDE_PAC 0x00000020
/* Is AS-REQ (client referrals only) */
#define KRB5_KDB_FLAG_CLIENT_REFERRALS_ONLY 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
/* Allow in-realm aliases */
#define KRB5_KDB_FLAG_ALIAS_OK 0x00002000
#define KRB5_KDB_FLAGS_S4U ( KRB5_KDB_FLAG_PROTOCOL_TRANSITION | \
KRB5_KDB_FLAG_CONSTRAINED_DELEGATION )
#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_int16 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 */
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;
/* 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 */
} 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_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
#ifndef KRB5_KDB_SRV_TYPE_PASSWD
#define KRB5_KDB_SRV_TYPE_PASSWD 0x0300
#endif
#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_DONTBLOCK 0x0004
#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_iterate ( krb5_context kcontext,
char *match_entry,
int (*func) (krb5_pointer, krb5_db_entry *),
krb5_pointer func_arg );
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,
krb5_keylist_node *keylist,
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_kvno mkvno,
krb5_keylist_node **mkeys_list );
/**
* Free a master keylist.
*/
void
krb5_db_free_mkey_list( krb5_context context,
krb5_keylist_node *mkey_list );
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_keylist_node * mkey_list,
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_keylist_node * mkey_list,
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);
/* 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_keylist_node * mkey_list,
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);
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_dbe_update_tl_data( krb5_context context,
krb5_db_entry * entry,
krb5_tl_data * new_tl_data);
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_sign_authdata(krb5_context kcontext,
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_keyblock *krbtgt_key,
krb5_keyblock *session_key,
krb5_timestamp authtime,
krb5_authdata **tgt_auth_data,
krb5_authdata ***signed_auth_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,
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);
/* 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_kvno mkvno,
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_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 *);
#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 3
/*
* 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.
*/
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 master to slave. 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.
* (KRB5_DB_LOCKMODE_DONTBLOCK is unused and unimplemented.)
*
* 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_CANONICALIZE: Set by the KDC when looking up entries for
* an AS or TGS request with canonicalization requested. Determines
* whether the module should return out-of-realm referrals.
*
* KRB5_KDB_FLAG_INCLUDE_PAC: Set by the KDC during an AS request when the
* client requested PAC information during padata, and during most TGS
* requests. Indicates that the module should include PAC information
* when its sign_authdata method is invoked.
*
* KRB5_KDB_FLAG_CLIENT_REFERRALS_ONLY: Set by the KDC when looking up the
* client entry in an AS 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 when looking up a client entry
* during a TGS request, if the client principal is not part of the
* realm being served.
*
* KRB5_KDB_FLAG_ALIAS_OK: Set by the KDC for server principal lookups and
* for AS request client principal lookups with canonicalization
* requested; also set by the admin interface. Determines whether the
* module should return in-realm aliases.
*
* A module can return in-realm aliases if KRB5_KDB_FLAG_ALIAS_OK is set.
* To return an in-realm alias, fill in a different value for
* entries->princ than the one requested.
*
* A module can return out-of-realm referrals if KRB5_KDB_FLAG_CANONICALIZE
* is set. For AS request clients (KRB5_KDB_FLAG_CLIENT_REFERRALS_ONLY is
* also set), the module should do so by simply filling in an out-of-realm
* name in entries->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. For TGS referals, the module can also include
* tl-data of type KRB5_TL_SERVER_REFERRAL containing ASN.1-encoded Windows
* referral data as documented in draft-ietf-krb-wg-kerberos-referrals-11
* appendix A; this will be returned to the client as encrypted padata.
*/
krb5_error_code (*get_principal)(krb5_context kcontext,
krb5_const_principal search_for,
unsigned int flags,
krb5_db_entry **entry);
/*
* Mandatory: Free a database entry. The entry may have been constructed
* by the caller (using the db_alloc function to allocate associated
* memory); thus, a plugin must allocate each field of a principal entry
* separately.
*/
void (*free_principal)(krb5_context kcontext, 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: For each principal entry in the database, invoke func with the
* argments 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);
/*
* 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 argments 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: Free a policy entry returned by db_get_policy. */
void (*free_policy)(krb5_context kcontext, osa_policy_ent_t val);
/*
* Mandatory: Has the semantics of realloc(ptr, size). Callers use this to
* allocate memory for new or changed principal entries, so the module
* should expect to potentially see this memory in db_free_principal.
*/
void *(*alloc)(krb5_context kcontext, void *ptr, size_t size);
/*
* Mandatory: Has the semantics of free(ptr). Callers use this to free
* fields from a principal entry (such as key data) before changing it in
* place, and in some cases to free data they allocated with db_alloc.
*/
void (*free)(krb5_context kcontext, void *ptr);
/*
* 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_kvno kvno,
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: Generate signed authorization data, such as a Windows PAC, for
* the ticket to be returned to the client. Place the signed authorization
* data, if any, in *signed_auth_data. This function will be invoked for
* an AS request if the client included padata requesting a PAC. This
* function will be invoked for a TGS request if there is authorization
* data in the TGT, if the client is from another realm, or if the TGS
* request is an S4U2Self or S4U2Proxy request. This function will not be
* invoked during TGS requests if the server principal has the
* no_auth_data_required attribute set. Input parameters are:
*
* flags: The flags used to look up the client principal.
*
* client_princ: For S4U2Proxy TGS requests, the client principal
* requested by the service; for regular TGS requests, the
* possibly-canonicalized client principal.
*
* client: The DB entry of the client. For S4U2Self, this will be the DB
* entry for the client principal requested by the service).
*
* server: The DB entry of the service principal.
*
* krbtgt: For TGS requests, the DB entry of the (possibly foreign)
* ticket granting service of the TGT. For AS requests, the DB entry
* of the service principal.
*
* client_key: The reply key for the KDC request, before any FAST armor
* is applied. For AS requests, this may be the client's long-term key
* or a key chosen by a preauth mechanism. For TGS requests, this may
* be the subkey found in the AP-REQ or the session key of the TGT.
*
* server_key: The server key used to encrypt the returned ticket.
*
* krbtgt_key: For TGS requests, the key of the (possibly foreign) ticket
* granting service of the TGT. for AS requests, the service
* principal's key.
*
* session_key: The session key of the ticket being granted to the
* requestor.
*
* authtime: The timestamp of the original client authentication time.
* For AS requests, this is the current time. For TGS requests, this
* is the authtime of the subject ticket (TGT or S4U2Proxy evidence
* ticket).
*
* tgt_auth_data: For TGS requests, the authorization data present in the
* subject ticket. For AS requests, NULL.
*/
krb5_error_code (*sign_authdata)(krb5_context kcontext,
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_keyblock *krbtgt_key,
krb5_keyblock *session_key,
krb5_timestamp authtime,
krb5_authdata **tgt_auth_data,
krb5_authdata ***signed_auth_data);
/*
* Optional: Perform a policy check on a cross-realm ticket's transited
* field and return an 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 KDC_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 KDC_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,
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. (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 it, or an appropriate error (such as
* KRB5KDC_ERR_POLICY) 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);
} kdb_vftabl;
#endif /* !defined(_WIN32) */
#endif /* KRB5_KDB5__ */
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