nat_task_init.c

vxworks下ppp的实现源码

/* nat_task_init.c */

/* Copyright 2000-2003 Wind River Systems, Inc. */

/* @format.tab-size 4, @format.use-tabs true, @format.new-line lf */

/*
modification history
--------------------
01c,25apr03,myz  removed rwos_task_reference_counter variable.
01b,23apr03,zhu  updated copyright
01a,21apr03,myz  start WRS modification history.
missing initial modification history.
*/

#include "nat.h"
#include <stdio.h>					/* printf() prototype */
#include <string.h>					/* memcpy() prototype */
#include <taskLib.h>				/* taskSuspend() */


/* 
//	Defined in NVRAM.c
//	******************
//	extern NVRAM_CLASS nvram;
*/
extern enum TEST initialize_nvram (char *cptr_file_name, ULONG location_of_ini_file, char *cptr_section_name, void *vptr_location_of_configuration_table);

char nat_configuration_text[RWOS_MAXIMUM_FILE_SIZE+1]={"<uninitialized>\n"};

/*
//	External interface.
*/
void nat_task_initialize(const char* p_configuration_data)
{
	char* p_module_data;

	/**********************/
	/* Set default values */
	/**********************/
	memset(&nat,0,sizeof(nat));	

	nat.enabled = true;
	nat.single_global_address_enabled = true;
	nat.global_address_mask = 0xffffff00;	/* 255.255.255.0 */
	nat.filter_non_corporate_addresses = true;
	nat.tcp_disconnected_timer = NAT_TCP_DISCONNECTED_TIMER;
	nat.tcp_connecting_timer = NAT_TCP_CONNECTING_TIMER;
	nat.tcp_connected_timer = NAT_TCP_CONNECTED_TIMER;
	nat.tcp_closing_timer = NAT_TCP_CLOSING_TIMER;
	nat.ip_translation_entry_timer = NAT_TRANSLATION_ENTRY_TIMER;
	nat.udp_translation_entry_timer = NAT_UDP_TRANSLATION_ENTRY_TIMER;
	nat.icmp_translation_entry_timer = NAT_ICMP_TRANSLATION_ENTRY_TIMER;
	nat.sequence_entry_timer = SEQUENCE_ENTRY_TIMER;
	nat.printing_enabled = true;
	nat.error_printing_enabled = true;
	nat.initialization_printing_enabled = true;
	nat.error_logging_enabled = true;
	nat.initialization_logging_enabled = true;
	nat.natg.global_address_pool_size = 8;	/* 8-bits, 256 values */
	nat.filter_unknown_protocols = true;

	/* Allocate buffer to hold copy of config data */	
	p_module_data = malloc (RWOS_MAXIMUM_FILE_SIZE+1);

	if (p_module_data == NULL)
		{
		nat_printf (NAT_PRINTF_ERROR, "nat_task_initialize(): malloc failure\n");
		return;
		}

	/*
	//	Initialize NAT configuration table.
	*/
	strcpy(p_module_data, nat_configuration_text);

	if (initialize_nvram(NULL, (ULONG)p_module_data,"NAT Application"
		,(void*)nat_get_configuration_table_address()) == FAIL)
		{
		nat_printf (NAT_PRINTF_ERROR, "initialize_nvram failed\n");

		free ((void *)p_module_data);
		return;
		}

	free ((void *)p_module_data);

	/*
	//	Save the RwOS global mutex within the calling module.
	*/
	/*
	//	module_class.rwos_global_instance_mutex = rwos_get_global_mutex();
	*/

	/*
	//	Perform NAT initialization.
	*/
	if (nat_initialize() != OK)
		{
		nat_printf (NAT_PRINTF_ERROR, "nat_initialize failed\n");
		return;
		}

	nat_printf(NAT_PRINTF_INIT,"nat_task_initialize() successful.\n");
}