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/*
SSSD
Library for rule based certificate to user mapping
Authors:
Sumit Bose <sbose@redhat.com>
Copyright (C) 2017 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 __SSS_CERTMAP_INT_H__
#define __SSS_CERTMAP_INT_H__
#include <sys/types.h>
#include <regex.h>
#include <stdint.h>
#include <talloc.h>
#define CM_DEBUG(cm_ctx, format, ...) do { \
if (cm_ctx != NULL && cm_ctx->debug != NULL) { \
cm_ctx->debug(cm_ctx->debug_priv, __FILE__, __LINE__, __FUNCTION__, \
format, ##__VA_ARGS__); \
} \
} while (0)
#define DEFAULT_MATCH_RULE "<KU>digitalSignature<EKU>clientAuth"
#define DEFAULT_MAP_RULE "LDAP:(userCertificate;binary={cert!bin})"
enum san_opt {
SAN_OTHER_NAME = 0,
SAN_RFC822_NAME,
SAN_DNS_NAME,
SAN_X400_ADDRESS,
SAN_DIRECTORY_NAME,
SAN_EDIPART_NAME,
SAN_URI,
SAN_IP_ADDRESS,
SAN_REGISTERED_ID,
SAN_PKINIT,
SAN_NT,
SAN_PRINCIPAL,
SAN_STRING_OTHER_NAME,
SAN_END,
SAN_INVALID
};
/* KRB5 matching rule */
enum relation_type {
relation_none = 0,
relation_and,
relation_or
};
struct component_list {
char *val;
regex_t regexp;
uint32_t ku;
const char **eku_oid_list;
enum san_opt san_opt;
char *str_other_name_oid;
uint8_t *bin_val;
size_t bin_val_len;
struct component_list *prev;
struct component_list *next;
};
struct krb5_match_rule {
enum relation_type r;
struct component_list *issuer;
struct component_list *subject;
struct component_list *ku;
struct component_list *eku;
struct component_list *san;
};
enum comp_type {
comp_none = 0,
comp_string,
comp_template
};
struct parsed_template {
char *name;
char *attr_name;
char *conversion;
};
struct ldap_mapping_rule_comp {
enum comp_type type;
char *val;
struct parsed_template *parsed_template;
struct ldap_mapping_rule_comp *prev;
struct ldap_mapping_rule_comp *next;
};
struct ldap_mapping_rule {
struct ldap_mapping_rule_comp *list;
};
struct match_map_rule {
uint32_t priority;
char *match_rule;
struct krb5_match_rule *parsed_match_rule;
char *map_rule;
struct ldap_mapping_rule *parsed_mapping_rule;
char **domains;
struct match_map_rule *prev;
struct match_map_rule *next;
};
struct priority_list {
uint32_t priority;
struct match_map_rule *rule_list;
struct priority_list *prev;
struct priority_list *next;
};
struct sss_certmap_ctx {
struct priority_list *prio_list;
sss_certmap_ext_debug *debug;
void *debug_priv;
struct ldap_mapping_rule *default_mapping_rule;
};
struct san_list {
enum san_opt san_opt;
char *val;
uint8_t *bin_val;
size_t bin_val_len;
char *other_name_oid;
char *short_name;
const char **rdn_list;
struct san_list *prev;
struct san_list *next;
};
/* key usage flags, see RFC 3280 section 4.2.1.3 */
#define SSS_KU_DIGITAL_SIGNATURE 0x0080
#define SSS_KU_NON_REPUDIATION 0x0040
#define SSS_KU_KEY_ENCIPHERMENT 0x0020
#define SSS_KU_DATA_ENCIPHERMENT 0x0010
#define SSS_KU_KEY_AGREEMENT 0x0008
#define SSS_KU_KEY_CERT_SIGN 0x0004
#define SSS_KU_CRL_SIGN 0x0002
#define SSS_KU_ENCIPHER_ONLY 0x0001
#define SSS_KU_DECIPHER_ONLY 0x8000
struct sss_cert_content {
const char *issuer_str;
const char **issuer_rdn_list;
const char *subject_str;
const char **subject_rdn_list;
uint32_t key_usage;
const char **extended_key_usage_oids;
struct san_list *san_list;
uint8_t *cert_der;
size_t cert_der_size;
};
int sss_cert_get_content(TALLOC_CTX *mem_ctx,
const uint8_t *der_blob, size_t der_size,
struct sss_cert_content **content);
char *check_ad_attr_name(TALLOC_CTX *mem_ctx, const char *rdn);
int parse_krb5_match_rule(struct sss_certmap_ctx *ctx,
const char *rule_start,
struct krb5_match_rule **match_rule);
int parse_ldap_mapping_rule(struct sss_certmap_ctx *ctx,
const char *rule_start,
struct ldap_mapping_rule **mapping_rule);
#endif /* __SSS_CERTMAP_INT_H__ */
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