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WATTCP.H
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C/C++ Source or Header
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1992-07-10
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13KB
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425 lines
#define WATTCPH
#define SOCKESTABLISHED 1
#define SOCKDATAREADY 2
#define SOCKCLOSED 4
/*
#define DEBUG
*/
/*
#define MoveW( a , b, c ) movmem( a, b,c )
#define busyouta(c) (putch(c))
*/
#include <stdio.h>
#include <elib.h>
#define set_mstimeout( x ) (set_timeout(0)+ (x / 55))
#define MAX_GATE_DATA 12
#define MAX_NAMESERVERS 10
#define MAX_COOKIES 10
#define MAX_STRING 50 /* most strings are limited */
#define MAXVJSA 1440 /* 10 s */
#define MAXVJSD 360 /* 10 s */
#define SAFETYTCP 0x538f25a3L
#define SAFETYUDP 0x3e45e154L
#define TRUE 1
#define true TRUE
#define FALSE 0
#define false FALSE
/* These are Ethernet protocol numbers but I use them for other things too */
#define UDP_PROTO 0x11
#define TCP_PROTO 0x06
#define ICMP_PROTO 0x01
#define TCP_MODE_BINARY 0 /* default mode */
#define TCP_MODE_ASCII 1
#define UDP_MODE_CHK 0 /* default to having checksums */
#define UDP_MODE_NOCHK 2 /* turn off checksums */
#define TCP_MODE_NAGLE 0 /* Nagle algorithm */
#define TCP_MODE_NONAGLE 4
typedef int (*procref)();
typedef unsigned long longword; /* 32 bits */
typedef unsigned short word; /* 16 bits */
typedef unsigned char byte; /* 8 bits */
typedef byte eth_address[6];
/* undesirable */
extern longword MsecClock();
#define clock_ValueRough() MsecClock()
#define TICKS_SEC 18
#define checksum( p, len) inchksum( p, len )
#define PD_ETHER 1
#define PD_SLIP 6
extern word sock_inactive; /* in pcbootp.c */
extern word _pktdevclass;
extern word _mss;
extern word _bootptimeout; /* in pcbootp.c */
extern longword _bootphost; /* in pcbootp.c */
extern word _bootpon;
/* The Ethernet header */
typedef struct {
eth_address destination;
eth_address source;
word type;
} eth_Header;
/* The Internet Header: */
typedef struct {
unsigned hdrlen : 4;
unsigned ver : 4;
byte tos;
word length;
word identification;
word frag;
byte ttl;
byte proto;
word checksum;
longword source;
longword destination;
} in_Header;
#ifdef WATTCPH
#define in_GetVersion(ip) ( (ip)->ver )
#define in_GetHdrlen(ip) ( (ip)->hdrlen ) /* 32 bit word size */
#define in_GetHdrlenBytes(ip) ( in_GetHdrlen(ip) << 2 ) /* 8 bit byte size */
#define in_GetTos(ip) ( (ip)->tos)
#define in_GetTTL(ip) ((ip)->ttl)
#define in_GetProtocol(ip) ((ip)->proto )
#else
/*
#define in_GetVersion(ip) (((ip)->vht >> 12) & 0xf)
#define in_GetHdrlen(ip) (((ip)->vht >> 8) & 0xf)
#define in_GetHdrlenBytes(ip) (((ip)->vht >> 6) & 0x3c)
#define in_GetTos(ip) ((ip)->vht & 0xff)
#define in_GetTTL(ip) ((ip)->ttlProtocol >> 8)
#define in_GetProtocol(ip) ((ip)->ttlProtocol & 0xff)
*/
#endif WATTCPH
typedef struct {
word srcPort;
word dstPort;
word length;
word checksum;
} udp_Header;
#define UDP_LENGTH ( sizeof( udp_Header ))
typedef struct {
word srcPort;
word dstPort;
longword seqnum;
longword acknum;
word flags;
word window;
word checksum;
word urgentPointer;
} tcp_Header;
#define tcp_FlagFIN 0x0001
#define tcp_FlagSYN 0x0002
#define tcp_FlagRST 0x0004
#define tcp_FlagPUSH 0x0008
#define tcp_FlagACK 0x0010
#define tcp_FlagURG 0x0020
#define tcp_FlagDO 0xF000
#define tcp_GetDataOffset(tp) (intel16((tp)->flags) >> 12)
/* The TCP/UDP Pseudo Header */
typedef struct {
longword src;
longword dst;
byte mbz;
byte protocol;
word length;
word checksum;
} tcp_PseudoHeader;
/*
* TCP states, from tcp manual.
* Note: close-wait state is bypassed by automatically closing a connection
* when a FIN is received. This is easy to undo.
*/
#define tcp_StateLISTEN 0 /* listening for connection */
#define tcp_StateSYNSENT 1 /* syn sent, active open */
#define tcp_StateSYNREC 2 /* syn received, synack+syn sent. */
#define tcp_StateESTAB 3 /* established */
#define tcp_StateESTCL 4 /* established, but will FIN */
#define tcp_StateFINWT1 5 /* sent FIN */
#define tcp_StateFINWT2 6 /* sent FIN, received FINACK */
#define tcp_StateCLOSWT 7 /* received FIN waiting for close */
#define tcp_StateCLOSING 8 /* sent FIN, received FIN (waiting for FINACK) */
#define tcp_StateLASTACK 9 /* fin received, finack+fin sent */
#define tcp_StateTIMEWT 10 /* dally after sending final FINACK */
#define tcp_StateCLOSEMSL 11
#define tcp_StateCLOSED 12 /* finack received */
#define tcp_MaxBufSize 2048 /* maximum bytes to buffer on input */
/*
* UDP socket definition
*/
typedef struct _udp_socket {
struct _udp_socket *next;
word ip_type; /* always set to UDP_PROTO */
char *err_msg; /* null when all is ok */
char *usr_name;
void (*usr_yield)();
word sock_mode; /* a logical OR of bits */
longword usertimer; /* ip_timer_set, ip_timer_timeout */
procref dataHandler;
eth_address hisethaddr; /* peer's ethernet address */
longword hisaddr; /* peer's internet address */
word hisport; /* peer's UDP port */
longword myaddr;
word myport;
int queuelen;
byte *queue;
int rdatalen; /* must be signed */
word maxrdatalen;
byte *rdata;
byte rddata[ tcp_MaxBufSize + 1]; /* if dataHandler = 0, len == 512 */
longword safetysig;
} udp_Socket;
/*
* TCP Socket definition
*/
typedef struct _tcp_socket {
struct _tcp_socket *next;
word ip_type; /* always set to TCP_PROTO */
char *err_msg;
char *usr_name;
void (*usr_yield)();
word sock_mode; /* a logical OR of bits */
longword usertimer; /* ip_timer_set, ip_timer_timeout */
procref dataHandler; /* called with incoming data */
eth_address hisethaddr; /* ethernet address of peer */
longword hisaddr; /* internet address of peer */
word hisport; /* tcp ports for this connection */
longword myaddr;
word myport;
int queuelen;
byte *queue;
int rdatalen; /* must be signed */
word maxrdatalen;
byte *rdata;
byte rddata[tcp_MaxBufSize+1]; /* received data */
longword safetysig;
word state; /* connection state */
longword acknum;
longword seqnum; /* data ack'd and sequence num */
long timeout; /* timeout, in milliseconds */
byte unhappy; /* flag, indicates retransmitting segt's */
byte recent; /* 1 if recently transmitted */
word flags; /* tcp flags word for last packet sent */
word window; /* other guy's window */
int datalen; /* number of bytes of data to send */
/* must be signed */
int unacked; /* unacked data */
byte cwindow; /* Van Jacobson's algorithm */
byte wwindow;
word vj_sa; /* VJ's alg, standard average */
word vj_sd; /* VJ's alg, standard deviation */
longword vj_last; /* last transmit time */
word rto;
byte karn_count; /* count of packets */
byte tos; /* priority */
/* retransmission timeout proceedure */
/* these are in clock ticks */
longword rtt_lasttran; /* last transmission time */
longword rtt_smooth; /* smoothed round trip time */
longword rtt_delay; /* delay for next transmission */
longword rtt_time; /* time of next transmission */
word mss;
longword inactive_to; /* for the inactive flag */
byte data[tcp_MaxBufSize+1]; /* data to send */
} tcp_Socket;
/* sock_type used for socket io */
typedef union {
udp_Socket udp;
tcp_Socket tcp;
} sock_type;
/* similar to UNIX */
typedef struct sockaddr {
word s_type;
word s_port;
longword s_ip;
byte s_spares[6]; /* unused in TCP realm */
};
extern longword my_ip_addr;
extern eth_address _eth_addr;
extern eth_address _eth_brdcast;
extern longword sin_mask;
extern word sock_delay;
/*
* ARP definitions
*/
#ifdef WATTCPH
#define arp_TypeEther 0x100 /* ARP type of Ethernet address */
#else
#define arp_TypeEther 0x1 /* ARP type of Ethernet address */
#endif WATTCPH
/* harp op codes */
#ifdef WATTCPH
#define ARP_REQUEST 0x0100
#define ARP_REPLY 0x0200
#else
#define ARP_REQUEST 1
#define ARP_REPLY 2
#endif WATTCPH
/*
* Arp header
*/
typedef struct {
word hwType;
word protType;
word hwProtAddrLen; /* hw and prot addr len */
word opcode;
eth_address srcEthAddr;
longword srcIPAddr;
eth_address dstEthAddr;
longword dstIPAddr;
} arp_Header;
#define ETH_MSS 1400 /* MSS for Ethernet */
/*
* Ethernet interface:
*/
void _eth_init();
byte *_eth_formatpacket( void *eth_dest, word eth_type );
int _eth_send( word len);
void _eth_free( void *buf);
byte *_eth_arrived( word *type_ptr);
void _eth_release();
void *_eth_hardware(byte *p);
void ip_timer_init();
int ip_timer_expired();
/*
* socket macros
*/
/*
* sock_wait_established()
* - waits then aborts if timeout on s connection
* sock_wait_input()
* - waits for received input on s
* - may not be valid input for sock_Gets... check returned length
* sock_tick()
* - do tick and jump on abort
* sock_wait_closed();
* - discards all received data
*
* jump to sock_err with contents of *statusptr set to
* 1 on closed
* -1 on timeout
*
*/
_ip_delay0( sock_type *s, int timeoutseconds, procref fn, int *statusptr );
_ip_delay1( sock_type *s, int timeoutseconds, procref fn, int *statusptr );
_ip_delay2( sock_type *s, int timeoutseconds, procref fn, int *statusptr );
#define sock_wait_established( s, seconds, fn, statusptr ) \
if (_ip_delay0( s, seconds, fn, statusptr )) goto sock_err;
#define sock_wait_input( s, seconds, fn , statusptr ) \
if (_ip_delay1( s, seconds, fn, statusptr )) goto sock_err;
#define sock_tick( s, statusptr ) \
if ( !tcp_tick(s)) { *statusptr = 1 ; goto sock_err; }
#define sock_wait_closed(s, seconds, fn, statusptr )\
if (_ip_delay2( s, seconds, fn, statusptr )) goto sock_err;
/* in UDP_NDS.C */
longword resolve();
extern int _last_cookie;
extern longword _cookie[MAX_COOKIES];
extern char *def_domain;
extern longword def_nameservers[MAX_NAMESERVERS];
extern int _last_nameserver;
extern char *_hostname;
word isaddr( char *string );
longword aton( char *string );
int _ping( longword host , longword countnum );
longword _chk_ping( longword host , longword *ptr);
void _arp_register( longword use, longword instead_of );
_arp_resolve( longword ina, eth_address *ethap);
void * _pkt_eth_init();
pkt_release();
int pkt_send( char *buffer, int length );
pkt_buf_wipe();
pkt_buf_release( char *ptr );
void * pkt_received();
void _add_server( int *counter, int max, longword *array, longword value );
extern word debug_on;
char *rip( char *s);
_chk_socket( tcp_Socket *s );
char *inet_ntoa( char *s, longword x );
char *psocket( tcp_Socket *s );
longword inet_addr( char *s );
char *sockerr( tcp_Socket *s );
char *sockstate( tcp_Socket *s );
getpeername( tcp_Socket *s, void *dest, int *len );
getsockname( tcp_Socket *s, void *dest, int *len );
longword gethostid();
longword sethostid( longword ip );
char *getdomainname( char *name, int length );
char *setdomainname( char *string );
word ntohs( word a );
word htons( word a );
longword ntohl( longword x );
longword htonl( longword x );
void * _tcp_lookup( longword hisip, word hisport, word myport );
int addwattcpd( void (*p)() );
int delwattcpd( void (*p)() );