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#ifndef NETSNMP_CERT_UTIL_H
#if defined(NETSNMP_USE_OPENSSL) && defined(HAVE_LIBSSL)
#ifndef HEADER_SSL_H
#error "must include <openssl/ssl.h> before cert_util.h"
#endif
#ifndef HEADER_X509_H
#error "must include <openssl/x509.h> before cert_util.h"
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*************************************************************************
*
* netsnmp_cert structures, defines and function definitions
*
*************************************************************************/
void netsnmp_certs_init(void);
NETSNMP_IMPORT
void netsnmp_certs_agent_init(void);
void netsnmp_certs_shutdown(void);
void netsnmp_certs_load(void);
netsnmp_container *netsnmp_cert_get_trustlist(void);
typedef struct netsnmp_cert_common_s {
char *dir;
char *filename;
u_char type;
u_char allowed_uses;
u_char _pad[2]; /* for future use */
} netsnmp_cert_common;
typedef struct netsnmp_key_s {
netsnmp_cert_common info;
EVP_PKEY *okey;
struct netsnmp_cert_s *cert;
} netsnmp_key;
typedef struct netsnmp_cert_s {
netsnmp_cert_common info;
X509 *ocert;
netsnmp_key *key;
struct netsnmp_cert_s *issuer_cert;
char *issuer;
char *subject;
char *fingerprint;
char *common_name;
u_char hash_type;
u_char _pad[1]; /* for future use */
u_short offset;
} netsnmp_cert;
/** types */
enum { NS_CERT_TYPE_UNKNOWN = 0, NS_CERT_TYPE_PEM, NS_CERT_TYPE_DER,
NS_CERT_TYPE_PKCS12, NS_CERT_TYPE_KEY };
/** uses */
#define NS_CERT_IDENTITY 0x0001
#define NS_CERT_REMOTE_PEER 0x0002
#define NS_CERT_RESERVED1 0x0004
#define NS_CERT_CA 0x0008
/** source */
#define NS_CERTKEY_DEFAULT 0x000 /* get default from DS store */
#define NS_CERTKEY_FILE 0x001 /* filename/full path */
#define NS_CERTKEY_FINGERPRINT 0x002 /* public key fingerprint */
#define NS_CERTKEY_CA 0x004 /* trusted CA */
#define NS_CERTKEY_SAN_RFC822 0x008 /* subj alt name: rfc822 */
#define NS_CERTKEY_SAN_DNS 0x010 /* subj alt name: DNS */
#define NS_CERTKEY_SAN_IPADDR 0x020 /* subj alt name: IP address */
#define NS_CERTKEY_COMMON_NAME 0x040 /* common name */
#define NS_CERTKEY_TARGET_PARAM 0x080 /* tlstmParamsTable */
#define NS_CERTKEY_TARGET_ADDR 0x100 /* tlstmAddrTable */
#define NS_CERTKEY_MULTIPLE 0x200 /* try multiple sources */
/** RFC 5246 hash algorithms (Section 7.4.1.4.1) */
#define NS_HASH_NONE 0
#define NS_HASH_MD5 1
#define NS_HASH_SHA1 2
#define NS_HASH_SHA224 3
#define NS_HASH_SHA256 4
#define NS_HASH_SHA384 5
#define NS_HASH_SHA512 6
#define NS_HASH_MAX NS_HASH_SHA512
/** SNMP-TLS-TM-MIB */
#define SNMPTLSFINGERPRINT_MAX_LEN 255
/*************************************************************************
* netsnmp_cert function definitions
*************************************************************************/
NETSNMP_IMPORT
netsnmp_cert *netsnmp_cert_find(int what, int where, void *hint);
netsnmp_void_array *netsnmp_certs_find(int what, int where, void *hint);
int netsnmp_cert_check_vb_fingerprint(const netsnmp_variable_list *var);
void netsnmp_fp_lowercase_and_strip_colon(char *fp);
int netsnmp_cert_parse_hash_type(const char *str);
int netsnmp_tls_fingerprint_build(int hash_type, const char *hex_fp,
u_char **tls_fp, size_t *tls_fp_len,
int allow_realloc);
int netsnmp_tls_fingerprint_parse(const u_char *binary_fp, int fp_len,
char **fp_str_ptr, u_int *fp_str_len,
int allow_realloc, u_char *hash_type_ptr);
int netsnmp_cert_trust(SSL_CTX *ctx, netsnmp_cert *thiscert);
int netsnmp_cert_trust_ca(SSL_CTX *ctx, netsnmp_cert *thiscertsrootca);
/*************************************************************************
*
* certificate to Transport Security Name mapping (netsnmp_cert_map)
*
*************************************************************************/
#define TSNM_tlstmCertSpecified 1
#define TSNM_tlstmCertSANRFC822Name 2
#define TSNM_tlstmCertSANDNSName 3
#define TSNM_tlstmCertSANIpAddress 4
#define TSNM_tlstmCertSANAny 5
#define TSNM_tlstmCertCommonName 6
#define TSNM_tlstmCert_MAX TSNM_tlstmCertCommonName
#define NSCM_FROM_CONFIG 0x0001
#define NSCM_FROM_MIB 0x0002
#define NSCM_NONVOLATILE 0x0004
typedef struct netsnmp_cert_map_s {
int priority;
char *fingerprint;
int mapType;
char *data;
char hashType;
char flags;
X509 *ocert;
} netsnmp_cert_map;
netsnmp_cert_map *netsnmp_cert_map_alloc(char *fp, X509 *ocert);
void netsnmp_cert_map_free(netsnmp_cert_map *cert_map);
int netsnmp_cert_map_add(netsnmp_cert_map *map);
int netsnmp_cert_map_remove(netsnmp_cert_map *map);
netsnmp_cert_map *netsnmp_cert_map_find(netsnmp_cert_map *map);
void netsnmp_cert_map_container_free(netsnmp_container *c);
netsnmp_container *netsnmp_cert_map_container_create(int with_fp);
netsnmp_container *netsnmp_cert_map_container(void);
netsnmp_cert_map *netsnmp_certToTSN_parse_common(char **line);
int netsnmp_cert_get_secname_maps(netsnmp_container *cm);
/*************************************************************************
*
* snmpTlstmParamsTable data
*
*************************************************************************/
typedef struct snmpTlstmParams_s {
char *name;
char *fingerprint;
char hashType;
u_char flags;
u_char fingerprint_len;
} snmpTlstmParams;
#define TLSTM_PARAMS_FROM_CONFIG 0x01
#define TLSTM_PARAMS_FROM_MIB 0x02
#define TLSTM_PARAMS_NONVOLATILE 0x04
/** ine TLSTM_PARAMS_XXX 0x08 */
snmpTlstmParams *netsnmp_tlstmParams_create(const char *tag, int hashType,
const char *fp, int fp_len);
void netsnmp_tlstmParams_free(snmpTlstmParams *stp);
snmpTlstmParams *netsnmp_tlstmParams_restore_common(char **line);
netsnmp_container *netsnmp_tlstmParams_container(void);
int netsnmp_tlstmParams_add(snmpTlstmParams *stp);
int netsnmp_tlstmParams_remove(snmpTlstmParams *stp);
snmpTlstmParams *netsnmp_tlstmParams_find(snmpTlstmParams *stp);
/*************************************************************************
*
* snmpTlstmAddrTable data
*
*************************************************************************/
typedef struct snmpTlstmAddr_s {
char *name;
char *fingerprint;
char *identity;
u_char hashType;
u_char flags;
} snmpTlstmAddr;
#define TLSTM_ADDR_FROM_CONFIG 0x01
#define TLSTM_ADDR_FROM_MIB 0x02
#define TLSTM_ADDR_NONVOLATILE 0x04
/** ine TLSTM_ADDR_XXX 0x08 */
int netsnmp_tlstmAddr_restore_common(char **line, char *name,
size_t *name_len, char *id,
size_t *id_len, char *fp,
size_t *fp_len, u_char *ht);
netsnmp_container *netsnmp_tlstmAddr_container(void);
snmpTlstmAddr *netsnmp_tlstmAddr_find(snmpTlstmAddr *entry);
snmpTlstmAddr *netsnmp_tlstmAddr_create(char *targetAddrName);
void netsnmp_tlstmAddr_free(snmpTlstmAddr *entry);
int netsnmp_tlstmAddr_add(snmpTlstmAddr *entry);
int netsnmp_tlstmAddr_remove(snmpTlstmAddr *entry);
NETSNMP_IMPORT
char *netsnmp_tlstmAddr_get_serverId(const char *name);
#ifdef __cplusplus
}
#endif
#endif /* defined(NETSNMP_USE_OPENSSL) && defined(HAVE_LIBSSL) */
#endif /* NETSNMP_CERT_UTIL_H */
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