path: root/lib/gnutls.h.in.in

/*
 *      Copyright (C) 2000,2001 Nikos Mavroyanopoulos
 *
 * This file is part of GNUTLS.
 *
 * GNUTLS 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 2 of the License, or
 * (at your option) any later version.
 *
 * GNUTLS 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 */

#ifndef GNUTLS_H
# define GNUTLS_H

#ifdef __cplusplus
extern "C" {
#endif

#define LIBGNUTLS_VERSION "@VERSION@"

@DEFINE_SIZE_T@
@DEFINE_TIME_T@

#define GNUTLS_AES GNUTLS_RIJNDAEL

typedef enum GNUTLS_BulkCipherAlgorithm { GNUTLS_CIPHER_NULL=1, GNUTLS_CIPHER_ARCFOUR, GNUTLS_CIPHER_3DES_CBC, GNUTLS_CIPHER_RIJNDAEL_CBC, GNUTLS_CIPHER_TWOFISH_CBC, GNUTLS_CIPHER_RIJNDAEL256_CBC } GNUTLS_BulkCipherAlgorithm;
typedef enum GNUTLS_KXAlgorithm { GNUTLS_KX_X509PKI_RSA=1, GNUTLS_KX_X509PKI_DHE_DSS, GNUTLS_KX_X509PKI_DHE_RSA, GNUTLS_KX_ANON_DH, GNUTLS_KX_SRP } GNUTLS_KXAlgorithm;
typedef enum GNUTLS_CredType { GNUTLS_X509PKI=1, GNUTLS_ANON, GNUTLS_SRP } GNUTLS_CredType;
#define CredType GNUTLS_CredType

typedef enum GNUTLS_MACAlgorithm { GNUTLS_MAC_NULL=1, GNUTLS_MAC_MD5, GNUTLS_MAC_SHA } GNUTLS_MACAlgorithm;
typedef enum GNUTLS_DigestAlgorithm { GNUTLS_DIG_NULL=1, GNUTLS_DIG_MD5, GNUTLS_DIG_SHA } GNUTLS_DigestAlgorithm;
typedef enum GNUTLS_CompressionMethod { GNUTLS_COMP_NULL=1, GNUTLS_COMP_ZLIB } GNUTLS_CompressionMethod;
typedef enum GNUTLS_ConnectionEnd { GNUTLS_SERVER=1, GNUTLS_CLIENT } GNUTLS_ConnectionEnd;
typedef enum GNUTLS_AlertLevel { GNUTLS_AL_WARNING=1, GNUTLS_AL_FATAL } GNUTLS_AlertLevel;
typedef enum GNUTLS_AlertDescription { GNUTLS_A_CLOSE_NOTIFY, GNUTLS_A_UNEXPECTED_MESSAGE=10, GNUTLS_A_BAD_RECORD_MAC=20,
			GNUTLS_A_DECRYPTION_FAILED, GNUTLS_A_RECORD_OVERFLOW,  GNUTLS_A_DECOMPRESSION_FAILURE=30,
			GNUTLS_A_HANDSHAKE_FAILURE=40, GNUTLS_A_NETSCAPE_NO_CLIENT_CERTIFICATE=41,
			GNUTLS_A_BAD_CERTIFICATE=42, GNUTLS_A_UNSUPPORTED_CERTIFICATE,
			GNUTLS_A_CERTIFICATE_REVOKED, GNUTLS_A_CERTIFICATE_EXPIRED, GNUTLS_A_CERTIFICATE_UNKNOWN,
			GNUTLS_A_ILLEGAL_PARAMETER, GNUTLS_A_UNKNOWN_CA, GNUTLS_A_ACCESS_DENIED, GNUTLS_A_DECODE_ERROR=50,
			GNUTLS_A_DECRYPT_ERROR, GNUTLS_A_EXPORT_RESTRICTION=60, GNUTLS_A_PROTOCOL_VERSION=70,
			GNUTLS_A_INSUFFICIENT_SECURITY, GNUTLS_A_INTERNAL_ERROR=80, GNUTLS_A_USER_CANCELED=90,
			GNUTLS_A_NO_RENEGOTIATION=100
} GNUTLS_AlertDescription;

typedef enum GNUTLS_CertificateStatus { GNUTLS_CERT_TRUSTED=1, GNUTLS_CERT_NOT_TRUSTED, GNUTLS_CERT_EXPIRED, GNUTLS_CERT_INVALID, GNUTLS_CERT_NONE } GNUTLS_CertificateStatus;
#define CertificateStatus GNUTLS_CertificateStatus

typedef enum GNUTLS_CertificateRequest { GNUTLS_CERT_IGNORE, GNUTLS_CERT_REQUEST=1, GNUTLS_CERT_REQUIRE } GNUTLS_CertificateRequest;
#define CertificateRequest GNUTLS_CertificateRequest

typedef enum GNUTLS_CloseRequest { GNUTLS_SHUT_RDWR=0, GNUTLS_SHUT_WR=1 } GNUTLS_CloseRequest;

typedef enum GNUTLS_Version { GNUTLS_SSL3=1, GNUTLS_TLS1 } GNUTLS_Version;

/* If you want to change this, then also change the 
 * define in gnutls_int.h, and recompile.
 */
#define GNUTLS_SOCKET_PTR int

typedef const int* GNUTLS_LIST;

struct GNUTLS_STATE_INT;
typedef struct GNUTLS_STATE_INT* GNUTLS_STATE;

typedef struct {
	unsigned char * data;
	int size;
} gnutls_datum;

/* internal functions */

int gnutls_init(GNUTLS_STATE * state, GNUTLS_ConnectionEnd con_end);
void gnutls_deinit(GNUTLS_STATE state);
int gnutls_bye( GNUTLS_STATE state, GNUTLS_CloseRequest how);

int gnutls_handshake( GNUTLS_STATE state);
int gnutls_check_pending(GNUTLS_STATE state);
int gnutls_rehandshake( GNUTLS_STATE state);


GNUTLS_AlertDescription gnutls_alert_get_last( GNUTLS_STATE state);
int 		 gnutls_alert_send(GNUTLS_SOCKET_PTR, GNUTLS_STATE, GNUTLS_AlertLevel, GNUTLS_AlertDescription);
int 		 gnutls_alert_send_appropriate(  GNUTLS_STATE state, int err);

/* get information on the current state */
GNUTLS_BulkCipherAlgorithm gnutls_cipher_get_algo( GNUTLS_STATE state);
GNUTLS_KXAlgorithm 	    gnutls_kx_get_algo( GNUTLS_STATE state);
GNUTLS_MACAlgorithm	    gnutls_mac_get_algo( GNUTLS_STATE state);
GNUTLS_CompressionMethod   gnutls_compression_get_algo( GNUTLS_STATE state);

/* the name of the specified algorithms */
const char *gnutls_cipher_get_name( GNUTLS_BulkCipherAlgorithm);
const char *gnutls_mac_get_name( GNUTLS_MACAlgorithm);
const char *gnutls_compression_get_name( GNUTLS_CompressionMethod);
const char *gnutls_kx_get_name( GNUTLS_KXAlgorithm algorithm);


/* error functions */
int gnutls_error_is_fatal( int error);
#define gnutls_is_fatal_error(x) gnutls_error_is_fatal(x)

void gnutls_perror( int error);
const char* gnutls_strerror( int error);

ssize_t gnutls_write( GNUTLS_STATE state, void *data, size_t sizeofdata);
ssize_t gnutls_read( GNUTLS_STATE state, void *data, size_t sizeofdata);

/* functions to set priority of cipher suites */
int gnutls_cipher_set_priority( GNUTLS_STATE state, GNUTLS_LIST);
int gnutls_mac_set_priority( GNUTLS_STATE state, GNUTLS_LIST);
int gnutls_compression_set_priority( GNUTLS_STATE state, GNUTLS_LIST);
int gnutls_kx_set_priority( GNUTLS_STATE state, GNUTLS_LIST);
int gnutls_protocol_set_priority( GNUTLS_STATE state, GNUTLS_LIST);

/* set our version - 0 for TLS 1.0 and 1 for SSL3 */
GNUTLS_Version gnutls_protocol_get_version(GNUTLS_STATE state);

const char *gnutls_protocol_get_name(GNUTLS_Version version);


/* get/set session */
int gnutls_session_set_data( GNUTLS_STATE state, void* session, int session_size);
int gnutls_session_get_data( GNUTLS_STATE state, void* session, int *session_size);
/* returns the session ID */
int gnutls_session_get_id( GNUTLS_STATE state, void* session, int *session_size);

typedef int (*GNUTLS_DB_STORE_FUNC)(void*, gnutls_datum key, gnutls_datum data);
typedef int (*GNUTLS_DB_REMOVE_FUNC)(void*, gnutls_datum key);
typedef gnutls_datum (*GNUTLS_DB_RETR_FUNC)(void*, gnutls_datum key);

void gnutls_db_set_cache_expiration( GNUTLS_STATE state, int seconds);

int  gnutls_db_set_name( GNUTLS_STATE state, char* filename);	
int  gnutls_db_clean( GNUTLS_STATE state);
void gnutls_db_set_retrieve_func( GNUTLS_STATE, GNUTLS_DB_RETR_FUNC);
void gnutls_db_set_remove_func( GNUTLS_STATE, GNUTLS_DB_REMOVE_FUNC);
void gnutls_db_set_store_func( GNUTLS_STATE, GNUTLS_DB_STORE_FUNC);
void gnutls_db_set_ptr( GNUTLS_STATE, void* db_ptr);
void* gnutls_db_get_ptr( GNUTLS_STATE);
int  gnutls_db_check_entry( GNUTLS_STATE state, gnutls_datum session_entry);

void gnutls_handshake_set_max_data_buffer_size( GNUTLS_STATE state, int max);

/* returns libgnutls version */
const char* gnutls_check_version( const char*);

/* Functions for setting/clearing credentials */
int gnutls_clear_creds( GNUTLS_STATE state);
/* cred is a structure defined by the kx algorithm */
int gnutls_cred_set( GNUTLS_STATE, GNUTLS_CredType type, void* cred);

/* This will set the Common Name field in case of X509PKI
 * authentication. This will be used while verifying the
 * certificate
 */

/* Credential structures for SRP - used in gnutls_set_cred(); */

struct DSTRUCT;
typedef struct DSTRUCT* GNUTLS_X509PKI_CREDENTIALS;
typedef GNUTLS_X509PKI_CREDENTIALS GNUTLS_X509PKI_CLIENT_CREDENTIALS;
typedef GNUTLS_X509PKI_CREDENTIALS GNUTLS_X509PKI_SERVER_CREDENTIALS;
#define X509PKI_CLIENT_CREDENTIALS GNUTLS_X509PKI_CLIENT_CREDENTIALS
#define X509PKI_SERVER_CREDENTIALS GNUTLS_X509PKI_SERVER_CREDENTIALS

typedef struct DSTRUCT* GNUTLS_SRP_SERVER_CREDENTIALS;
typedef struct DSTRUCT* GNUTLS_SRP_CLIENT_CREDENTIALS;
#define SRP_SERVER_CREDENTIALS GNUTLS_SRP_SERVER_CREDENTIALS
#define SRP_CLIENT_CREDENTIALS GNUTLS_GNUTLS_SRP_CLIENT_CREDENTIALS

typedef struct DSTRUCT* GNUTLS_ANON_SERVER_CREDENTIALS;
typedef struct DSTRUCT* GNUTLS_ANON_CLIENT_CREDENTIALS;
#define ANON_SERVER_CREDENTIALS GNUTLS_ANON_SERVER_CREDENTIALS
#define ANON_CLIENT_CREDENTIALS GNUTLS_ANON_CLIENT_CREDENTIALS


void gnutls_srp_free_client_sc( GNUTLS_SRP_CLIENT_CREDENTIALS sc);
int gnutls_srp_allocate_client_sc( GNUTLS_SRP_CLIENT_CREDENTIALS *sc);
int gnutls_srp_set_client_cred( GNUTLS_SRP_CLIENT_CREDENTIALS res, char *username, char* password);

void gnutls_srp_free_server_sc( GNUTLS_SRP_SERVER_CREDENTIALS sc);
int gnutls_srp_allocate_server_sc( GNUTLS_SRP_SERVER_CREDENTIALS *sc);
int gnutls_srp_set_server_cred_file( GNUTLS_SRP_SERVER_CREDENTIALS res, char *password_file, char* password_conf_file);

void gnutls_anon_free_server_sc( GNUTLS_ANON_SERVER_CREDENTIALS sc);
int gnutls_anon_allocate_server_sc( GNUTLS_ANON_SERVER_CREDENTIALS *sc);
int gnutls_anon_set_server_cred( GNUTLS_ANON_SERVER_CREDENTIALS res, int dh_bits);

void gnutls_anon_free_client_sc( GNUTLS_ANON_SERVER_CREDENTIALS sc);
int gnutls_anon_allocate_client_sc( GNUTLS_ANON_SERVER_CREDENTIALS *sc);
int gnutls_anon_set_client_cred( GNUTLS_ANON_SERVER_CREDENTIALS res, int dh_bits);


/* CERTFILE is an x509 certificate in PEM form.
 * KEYFILE is a pkcs-1 private key in PEM form (for RSA keys).
 */
void gnutls_x509pki_free_sc( GNUTLS_X509PKI_CREDENTIALS sc);
int gnutls_x509pki_allocate_sc( GNUTLS_X509PKI_CREDENTIALS *sc, int ncerts);
int gnutls_x509pki_set_key_file( GNUTLS_X509PKI_CREDENTIALS res, char *CERTFILE, char* KEYFILE);
int gnutls_x509pki_set_trust_file( GNUTLS_X509PKI_CREDENTIALS res, char* CAFILE, char* CRLFILE);

int gnutls_x509pki_set_trust_mem(GNUTLS_X509PKI_CREDENTIALS res, const gnutls_datum *CA, const gnutls_datum *CRL);
int gnutls_x509pki_set_key_mem(GNUTLS_X509PKI_CREDENTIALS res, const gnutls_datum* CERT, const gnutls_datum* KEY);

#define gnutls_x509pki_free_server_sc gnutls_x509pki_free_sc
#define gnutls_x509pki_allocate_server_sc gnutls_x509pki_allocate_sc
#define gnutls_x509pki_set_server_key_file gnutls_x509pki_set_key_file
#define gnutls_x509pki_set_server_trust_file gnutls_x509pki_set_trust_file

#define gnutls_x509pki_free_client_sc gnutls_x509pki_free_sc
#define gnutls_x509pki_allocate_client_sc gnutls_x509pki_allocate_sc
#define gnutls_x509pki_set_client_key_file gnutls_x509pki_set_key_file
#define gnutls_x509pki_set_client_trust_file gnutls_x509pki_set_trust_file


/* global state functions 
 */
/* In this version global_init accepts two files (pkix.asn, pkcs1.asn).
 * This will not be the case in the final version. These files 
 * are located in the src/ directory of gnutls distribution.
 */
int gnutls_global_init(void);
void gnutls_global_deinit(void);

int gnutls_dh_replace_params( gnutls_datum prime, gnutls_datum generator, int bits);
int gnutls_dh_generate_params( gnutls_datum* prime, gnutls_datum* generator, int bits);

typedef ssize_t (*GNUTLS_PULL_FUNC)(GNUTLS_SOCKET_PTR, void*, size_t);
typedef ssize_t (*GNUTLS_PUSH_FUNC)(GNUTLS_SOCKET_PTR, const void*, size_t);
void gnutls_transport_set_ptr(GNUTLS_STATE state, GNUTLS_SOCKET_PTR ptr);
GNUTLS_SOCKET_PTR gnutls_transport_get_ptr(GNUTLS_STATE state);

void gnutls_transport_set_lowat( GNUTLS_STATE state, int num);

typedef void (*GNUTLS_LOG_FUNC)( const char*);

void gnutls_transport_set_push_func( GNUTLS_STATE, GNUTLS_PUSH_FUNC push_func);
void gnutls_transport_set_pull_func( GNUTLS_STATE, GNUTLS_PULL_FUNC pull_func);

#define gnutls_transport_set_push_function gnutls_transport_set_push_func
#define gnutls_transport_set_pull_function gnutls_transport_set_pull_func

size_t gnutls_record_get_max_size( GNUTLS_STATE state);
size_t gnutls_record_set_max_size( GNUTLS_STATE state, size_t size);

int gnutls_fingerprint(GNUTLS_DigestAlgorithm algo, const gnutls_datum* data, char* result, int* result_size);