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/*
* Copyright (C) 2001,2002 Nikos Mavroyanopoulos
*
* This file is part of GNUTLS.
*
* The GNUTLS library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <gnutls_int.h>
#include <gnutls_errors.h>
#include <x509_asn1.h>
#include <gnutls_dh.h>
/* created by asn1c */
extern const static_asn gnutls_asn1_tab[];
extern const static_asn pkix_asn1_tab[];
typedef void (*LOG_FUNC)( const char*);
#define GNUTLS_LOG_FUNC LOG_FUNC
LOG_FUNC _gnutls_log_func;
static node_asn *PKIX1_ASN;
static node_asn *GNUTLS_ASN;
node_asn* _gnutls_get_pkix(void) {
return PKIX1_ASN;
}
node_asn* _gnutls_get_gnutls_asn(void) {
return GNUTLS_ASN;
}
/**
* gnutls_global_set_log_func - This function sets the logging function
* @log_func: it's a log function
*
* This is the function were you set the logging function gnutls
* is going to use. This function only accepts a character array.
* Normaly you may not use this function since
* it is only used for debugging reasons.
* LOG_FUNC is of the form,
* void (*LOG_FUNC)( const char*);
**/
void gnutls_global_set_log_func( GNUTLS_LOG_FUNC log_func) {
_gnutls_log_func = log_func;
}
/* default logging function */
static void dlog( const char* str) {
#ifdef DEBUG
fprintf( stderr, "%s", str);
#endif
}
static int _gnutls_init = 0;
/**
* gnutls_global_init - This function initializes the global state to defaults.
*
* This function initializes the global state to defaults.
* Every gnutls application has a global state which holds common parameters
* shared by gnutls state structures.
* You must call gnutls_global_deinit() when gnutls usage is no longer needed
* Returns zero on success.
*
* Note that this function will also initialize libgcrypt, if it has not
* been initialized before. Thus if you want to manualy initialize libgcrypt
* you must do it before calling this function. (useful in cases you want
* to disable internal lockings etc.)
*
**/
int gnutls_global_init( void)
{
int result;
_gnutls_init++;
if (_gnutls_init!=1) {
return 0;
}
if (gcry_control( GCRYCTL_ANY_INITIALIZATION_P) == 0) {
/* for gcrypt in order to be able to allocate memory */
gcry_set_allocation_handler(gnutls_malloc, gnutls_secure_malloc, _gnutls_is_secure_memory, gnutls_realloc, gnutls_free);
/* gcry_control (GCRYCTL_DISABLE_INTERNAL_LOCKING, NULL, 0); */
gcry_control (GCRYCTL_INITIALIZATION_FINISHED, NULL,0);
gcry_control (GCRYCTL_SET_VERBOSITY, (int)0);
}
/* set default recv/send functions
*/
gnutls_global_set_log_func( dlog);
/* initialize parser
* This should not deal with files in the final
* version.
*/
result=asn1_create_tree( (void*)pkix_asn1_tab, &PKIX1_ASN);
if (result != ASN_OK) {
return _gnutls_asn2err(result);
}
result=asn1_create_tree( (void*)gnutls_asn1_tab, &GNUTLS_ASN);
if (result != ASN_OK) {
asn1_delete_structure( PKIX1_ASN);
return _gnutls_asn2err(result);
}
result = _gnutls_dh_calc_mpis();
if (result < 0) {
gnutls_assert();
return result;
}
return 0;
}
/**
* gnutls_global_deinit - This function deinitializes the global state
*
* This function deinitializes the global state.
*
**/
void gnutls_global_deinit( void) {
_gnutls_init--;
if (_gnutls_init==0) {
asn1_delete_structure( GNUTLS_ASN);
asn1_delete_structure( PKIX1_ASN);
_gnutls_dh_clear_mpis();
}
}
/* These functions should be elsewere. Kept here for
* historical reasons.
*/
/**
* gnutls_transport_set_pull_func - This function sets a read like function
* @pull_func: it's a function like read
* @state: gnutls state
*
* This is the function where you set a function for gnutls
* to receive data. Normaly, if you use berkeley style sockets,
* you may not use this function since the default (recv(2)) will
* probably be ok.
* This function should be called once and after gnutls_global_init().
* PULL_FUNC is of the form,
* ssize_t (*GNUTLS_PULL_FUNC)(GNUTLS_TRANSPORT_PTR, const void*, size_t);
**/
void gnutls_transport_set_pull_func( GNUTLS_STATE state, GNUTLS_PULL_FUNC pull_func) {
state->gnutls_internals._gnutls_pull_func = pull_func;
}
/**
* gnutls_transport_set_push_func - This function sets the function to send data
* @push_func: it's a function like write
* @state: gnutls state
*
* This is the function where you set a push function for gnutls
* to use in order to send data. If you are going to use berkeley style
* sockets, you may not use this function since
* the default (send(2)) will probably be ok. Otherwise you should
* specify this function for gnutls to be able to send data.
*
* This function should be called once and after gnutls_global_init().
* PUSH_FUNC is of the form,
* ssize_t (*GNUTLS_PUSH_FUNC)(GNUTLS_TRANSPORT_PTR, const void*, size_t);
**/
void gnutls_transport_set_push_func( GNUTLS_STATE state, GNUTLS_PUSH_FUNC push_func) {
state->gnutls_internals._gnutls_push_func = push_func;
}
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