chat.h

基于cc1010的设计实例

/*****************************************************************************
 *                                                                           *
 *        **********                                                         *
 *       ************                                                        *
 *      ***        ***                                                       *
 *      ***   +++   ***                                                      *
 *      ***   + +   ***                                                      *
 *      ***   +                    CHIPCON CC1010 EXAMPLE PROGRAM            *
 *      ***   + +   ***                      CC1010 CHAT                     *
 *      ***   +++   ***                                                      *
 *      ***       ***                                                        *
 *       ***********                                                         *
 *        *********                                                          *
 *                                                                           *
 *****************************************************************************
 * Author:              JOL                                                  *
 *****************************************************************************
 * Revision history:                                                         *
 *                                                                           *
 * $Log: chat.h,v $
 * Revision 1.2  2002/11/19 13:48:44  kht
 * Added startup macros
 *
 * Revision 1.1  2002/10/14 10:02:25  tos
 * Initial version in CVS.
 *
 *                                                                           *
 ****************************************************************************/

#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <chipcon/cc1010eb.h>
#include <chipcon/vt100.h>
#include <chipcon/cul.h>
#include <chipcon/hal.h>

#define CLK_FREQ		14746
#define BUFFER_LENGTH 	255

/********************************** MESSAGES **************************************

Message Code			Source		Destination	Message Data
-----------------------------------------------------------------------------------
MSG_JOIN_REQUEST 		New client	Server		[Name]
MSG_JOIN_ACCEPTED 		Server		New client	[Assigned SPP address][Name]
MSG_JOIN_DENIED 		Server		New client	-
MSG_DISCONNECTED		Server		Client		-

MSG_NEW_CLIENT_LIST		Server		All clients	[(CI.addr|CI.name) list]	   

MSG_CHAT_BROADCAST_UP 	Client		Server		[The message]
MSG_CHAT_BROADCAST_DOWN	Server		All clients	[The message][C's address]

MSG_DIFFIE_HELLMAN_UP 	Client 1	Client 2	[Key generation material from C1]
MSG_DIFFIE_HELLMAN_DOWN	Client 2	Client 1	[Key generation material from C2]

MSG_PING				Server		All clients [Valid address bitmask, 2 bytes]
**********************************************************************************/

// SPP flag mask
#define MSG_MASK				0xF0

// SPP flags
#define MSG_JOIN_REQUEST 		0x00
#define MSG_JOIN_ACCEPTED		0x10
#define MSG_JOIN_DENIED			0x20
#define MSG_NEW_CLIENT_LIST		0x30
#define MSG_CHAT_UP				0x40
#define MSG_CHAT_DOWN			0x50
#define MSG_DIFFIE_HELLMAN_UP	0x60
#define MSG_DIFFIE_HELLMAN_DOWN	0x70
#define MSG_PING				0x80



//----------------------------------------------------------------------------
// SPECIAL ADDRESSES (SPP)
#define NEW_CLIENT_ADDRESS		254		
#define SERVER_ADDRESS			255
#define INVALID_ADDRESS			0
//----------------------------------------------------------------------------


//----------------------------------------------------------------------------
// UART0 FLOW CONTROL
#define UART0_FLOW_CONTROL		(P1_5)
#define STOP 					1
#define READY 					0
//----------------------------------------------------------------------------


//----------------------------------------------------------------------------
//  STATUS BAR (AT THE TOP OF THE CHAT WINDOW)
void printStatus(byte statusCode, byte address);

#define KEY_EXCHANGE_FAILED 	0
#define KEY_EXCHANGE_OK			1
#define DECRYPTION_MODE			2
#define DISCONNECTED			3
//----------------------------------------------------------------------------


//----------------------------------------------------------------------------
// 	PING RECEPTION
// 	The server transmits a "ping" (SPP_BROADCAST) at regular intervals
// 	If a client doesn't receive any pings for NO_PING_TIMEOUT/100 seconds, 
// 	it will assume that the radio link is down, and disconnect. 

#define NO_PING_TIMEOUT			2000
extern word xdata noPingTicks;
//----------------------------------------------------------------------------


//----------------------------------------------------------------------------
// 	CLIENT INFORMATION

#define MAX_CLIENTS				16 // Max 16 clients (including the server)
#define NAME_LENGTH				11

typedef struct {
	char name[NAME_LENGTH];	// My name
	byte address;			// SPP address
	bool isDESKeyValid;		// Is the key *pDESKey valid?
	byte *pDESKey;			// A pointer to some modulo-8 address in pKeyBuffer
	byte rxFlags;			// The last RXI.flags received from this client
	byte txFlags;			// The last TXI.flags transmitted to this client
} CLIENT_INFO;

#define CI_KEY_LENGTH			8	// DES key length (when stored in the key buffer)
extern byte xdata pKeyBuffer[CI_KEY_LENGTH * MAX_CLIENTS];
//----------------------------------------------------------------------------



void disconnected (void);

#define MAX_INPUT_LENGTH		68

#define TERMINAL_KEY_ENTER		0x0D
#define TERMINAL_KEY_BACKSPACE	0x08

#define VT100_CHAT_SECTION()				\
	do {									\
		printf("\0");						\
		VT100_GO_TO_POS(19, 80);			\
		VT100_SET_BGCOLOR(BLACK, DIM);		\
		VT100_SET_FGCOLOR(WHITE, DIM);		\
	} while (0)

#define VT100_INPUT_SECTION()				\
	do {									\
		printf("\0");						\
		VT100_GO_TO_POS(20, 1);				\
		VT100_SET_BGCOLOR(CYAN, DIM);		\
		VT100_SET_FGCOLOR(WHITE, BRIGHT);	\
	} while (0)

#define VT100_CLIENT_LIST_SECTION()			\
	do {									\
		printf("\0");						\
		VT100_GO_TO_POS(21, 1);				\
		VT100_SET_BGCOLOR(BLACK, DIM);		\
		VT100_SET_FGCOLOR(WHITE, DIM);		\
	} while (0)

#define VT100_INIT_LOGIN_SCREEN()			\
	do {									\
		printf("\0");						\
		VT100_SET_BGCOLOR(BLACK, DIM);		\
		VT100_SET_FGCOLOR(CYAN, BRIGHT);	\
		VT100_CLEAR_SCREEN();				\
	} while (0)

#define VT100_STATUS_SECTION()				\
	do {									\
		printf("\0");						\
		VT100_GO_TO_POS(1, 1);				\
	} while (0)

#define VT100_INIT_CHAT_SCREEN()			\
	do {									\
		printf("\0");						\
		VT100_SET_SCROLL_REGION(2, 19);		\
		VT100_SET_BGCOLOR(BLACK, DIM);		\
		VT100_CLEAR_SCREEN();				\
		VT100_INPUT_SECTION();				\
		VT100_CLEAR_LINE();					\
	} while (0)

// Reception timeouts
#define SHORT_RX_TIMEOUT	10
#define LONG_RX_TIMEOUT		(pMyCI->address == SERVER_ADDRESS ? 75 : 150)
#define RETRY_TX_TIMEOUT	(30 + (rand() & 0x001F))

// Function prototypes 
void printMessage(char xdata *pName, bool isPrivate, char xdata *pMessage, byte messageLen);
void printClientList(void);
void clearInputSection(void);

void initClientInfo(void);
void replaceClientInfo(byte *pCIBuffer, byte ciCount);
CLIENT_INFO xdata * getClientInfo(byte address);
void addClientInfo(byte address, char xdata *pName);
void delClientInfo(byte address);
bool setClientKey(byte address, byte xdata *pKeys);
bool regClient(byte xdata *pAddress, char xdata *pName);

void processMessage(void);
void broadcastClientList();
void broadcastMessage(byte sourceAddress, char xdata *pMessage, byte messageLen);

bool diffieHellmanUp(byte destAddress);
void diffieHellmanDown(CLIENT_INFO xdata *pSourceCI, byte xdata *pKeyMaterial);

// Request to join the chat room
byte sendJoinRequest(void);
#define JOIN_ACCEPTED	0	// OK!
#define JOIN_DENIED		1	// The server is full!
#define JOIN_ERROR		2	// Some RF error (retry)


bool sendJoinAccepted(byte address, char xdata *pName); // SERVER: Positive answer
void sendJoinDenied();									// SERVER: Negative answer

extern byte xdata pMessageTXBuffer[BUFFER_LENGTH];
extern byte xdata pAdminTXBuffer[BUFFER_LENGTH];
extern byte xdata pRXBuffer[BUFFER_LENGTH]; 

extern byte xdata *pInputBuffer;

extern SPP_RX_INFO xdata RXI;
extern SPP_TX_INFO xdata TXI;

extern CLIENT_INFO xdata CI[MAX_CLIENTS];
extern CLIENT_INFO xdata *pMyCI;
extern byte xdata clientCount;

extern byte xdata noDecryption;