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/*
SSSD
Kerberos Backend, common header file
Authors:
Sumit Bose <sbose@redhat.com>
Copyright (C) 2009 Red Hat
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __KRB5_COMMON_H__
#define __KRB5_COMMON_H__
#include "config.h"
#include <stdbool.h>
#include "providers/backend.h"
#include "util/util.h"
#include "util/sss_krb5.h"
#define KDCINFO_TMPL PUBCONF_PATH"/kdcinfo.%s"
#define KPASSWDINFO_TMPL PUBCONF_PATH"/kpasswdinfo.%s"
#define SSS_KRB5KDC_FO_SRV "KERBEROS"
#define SSS_KRB5KPASSWD_FO_SRV "KPASSWD"
#define SSS_KRB5_LOOKAHEAD_PRIMARY_DEFAULT 3
#define SSS_KRB5_LOOKAHEAD_BACKUP_DEFAULT 1
enum krb5_opts {
KRB5_KDC = 0,
KRB5_BACKUP_KDC,
KRB5_REALM,
KRB5_CCACHEDIR,
KRB5_CCNAME_TMPL,
KRB5_AUTH_TIMEOUT,
KRB5_KEYTAB,
KRB5_VALIDATE,
KRB5_KPASSWD,
KRB5_BACKUP_KPASSWD,
KRB5_STORE_PASSWORD_IF_OFFLINE,
KRB5_RENEWABLE_LIFETIME,
KRB5_LIFETIME,
KRB5_RENEW_INTERVAL,
KRB5_USE_FAST,
KRB5_FAST_PRINCIPAL,
KRB5_FAST_USE_ANONYMOUS_PKINIT,
KRB5_CANONICALIZE,
KRB5_USE_ENTERPRISE_PRINCIPAL,
KRB5_USE_KDCINFO,
KRB5_KDCINFO_LOOKAHEAD,
KRB5_MAP_USER,
KRB5_USE_SUBDOMAIN_REALM,
KRB5_OPTS
};
typedef enum { INIT_PW, INIT_KT, RENEW, VALIDATE } action_type;
struct krb5_service {
struct be_ctx *be_ctx;
char *name;
char *realm;
bool write_kdcinfo;
size_t lookahead_primary;
size_t lookahead_backup;
bool removal_callback_available;
};
struct fo_service;
struct deferred_auth_ctx;
struct renew_tgt_ctx;
enum krb5_config_type {
K5C_GENERIC,
K5C_IPA_CLIENT,
K5C_IPA_SERVER
};
struct map_id_name_to_krb_primary {
const char *id_name;
const char* krb_primary;
};
struct krb5_ctx {
/* opts taken from kinit */
/* in seconds */
krb5_deltat starttime;
krb5_deltat lifetime;
char *lifetime_str;
krb5_deltat rlife;
char *rlife_str;
int forwardable;
int proxiable;
int addresses;
int not_forwardable;
int not_proxiable;
int no_addresses;
int verbose;
char* principal_name;
char* service_name;
char* keytab_name;
char* k5_cache_name;
char* k4_cache_name;
action_type action;
struct dp_option *opts;
struct krb5_service *service;
struct krb5_service *kpasswd_service;
sss_regexp_t *illegal_path_re;
struct deferred_auth_ctx *deferred_auth_ctx;
struct renew_tgt_ctx *renew_tgt_ctx;
struct kcm_renew_tgt_ctx *kcm_renew_tgt_ctx;
bool use_fast;
bool sss_creds_password;
hash_table_t *wait_queue_hash;
hash_table_t *io_table;
enum krb5_config_type config_type;
struct map_id_name_to_krb_primary *name_to_primary;
char *realm;
const char *use_fast_str;
const char *fast_principal;
bool fast_use_anonymous_pkinit;
uint32_t check_pac_flags;
bool canonicalize;
};
struct remove_info_files_ctx {
char *realm;
struct be_ctx *be_ctx;
const char *kdc_service_name;
const char *kpasswd_service_name;
struct krb5_service *krb5_service;
};
errno_t sss_krb5_check_options(struct dp_option *opts,
struct sss_domain_info *dom,
struct krb5_ctx *krb5_ctx);
errno_t krb5_try_kdcip(struct confdb_ctx *cdb, const char *conf_path,
struct dp_option *opts, int opt_id);
errno_t sss_krb5_get_options(TALLOC_CTX *memctx, struct confdb_ctx *cdb,
const char *conf_path, struct dp_option **_opts);
void sss_krb5_parse_lookahead(const char *param, size_t *primary, size_t *backup);
errno_t write_krb5info_file(struct krb5_service *krb5_service,
const char **server_list,
const char *service);
errno_t write_krb5info_file_from_fo_server(struct krb5_service *krb5_service,
struct fo_server *server,
bool force_default_port,
const char *service,
bool (*filter)(struct fo_server *));
struct krb5_service *krb5_service_new(TALLOC_CTX *mem_ctx,
struct be_ctx *be_ctx,
const char *service_name,
const char *realm,
bool use_kdcinfo,
size_t n_lookahead_primary,
size_t n_lookahead_backup);
int krb5_service_init(TALLOC_CTX *memctx, struct be_ctx *ctx,
const char *service_name,
const char *primary_servers,
const char *backup_servers,
const char *realm,
bool use_kdcinfo,
size_t n_lookahead_primary,
size_t n_lookahead_backup,
struct krb5_service **_service);
void remove_krb5_info_files_callback(void *pvt);
errno_t remove_krb5_info_files(TALLOC_CTX *mem_ctx, const char *realm);
errno_t krb5_get_simple_upn(TALLOC_CTX *mem_ctx, struct krb5_ctx *krb5_ctx,
struct sss_domain_info *dom, const char *username,
const char *user_dom, char **_upn);
errno_t compare_principal_realm(const char *upn, const char *realm,
bool *different_realm);
/* from krb5_keytab.c */
/**
* @brief Copy given keytab into a MEMORY keytab
*
* @param[in] mem_ctx Talloc memory context the new keytab name should be
* allocated on
* @param[in] kctx Kerberos context
* @param[in] inp_keytab_file Existing keytab, if set to NULL the default
* keytab will be used
* @param[out] _mem_name Name of the new MEMORY keytab
* @param[out] _mem_keytab Krb5 keytab handle for the new MEMORY keytab, NULL
* may be passed here if the caller has no use for the
* handle
*
* The memory for the MEMORY keytab is handled by libkrb5 internally and
* a reference counter is used. If the reference counter of the specific
* MEMORY keytab reaches 0, i.e. no open ones are left, the memory is free.
* This means we cannot call krb5_kt_close() for the new MEMORY keytab in
* copy_keytab_into_memory() because this would destroy it immediately. Hence
* we have to return the handle so that the caller can safely remove the
* MEMORY keytab if the is not needed anymore. Since libkrb5 frees the
* internal memory when the library is unloaded short running processes can
* safely pass NULL as the 5th argument because on exit all memory is freed.
* Long running processes which need more control over the memory consumption
* should close the handle for free the memory at runtime.
*/
krb5_error_code copy_keytab_into_memory(TALLOC_CTX *mem_ctx, krb5_context kctx,
const char *inp_keytab_file,
char **_mem_name,
krb5_keytab *_mem_keytab);
errno_t set_extra_args(TALLOC_CTX *mem_ctx, struct krb5_ctx *krb5_ctx,
struct sss_domain_info *domain,
const char ***krb5_child_extra_args);
#endif /* __KRB5_COMMON_H__ */
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