PCBSD.C
上传用户:sunrenlu
上传日期:2022-06-13
资源大小:1419k
文件大小:2k
- #include <copyright.h>
- #include <stdio.h>
- #include <wattcp.h>
- #include <stdlib.h> /* itoa */
- #include <string.h>
- #include <elib.h>
- /*
- * PCBSD - provide some typical BSD UNIX functionality
- * Erick Engelke, Feb 22, 1991
- */
- /*
- * chk_socket - determine whether a real socket or not
- *
- */
- int _chk_socket( sock_type *s )
- {
- if ( s->tcp.ip_type == TCP_PROTO ) {
- if ( s->tcp.state <= tcp_StateCLOSED) /* skips invalid data */
- return( 2 );
- }
- if ( s->udp.ip_type == UDP_PROTO ) return( 1 );
- return( 0 );
- }
- char *inet_ntoa( char *s, longword x )
- {
- itoa( (int) (x >> 24), s, 10 );
- strcat( s, ".");
- itoa( (int) (x >> 16) & 0xff, strchr( s, 0), 10);
- strcat( s, ".");
- itoa( (int) (x >> 8) & 0xff, strchr( s, 0), 10);
- strcat( s, ".");
- itoa( (int) (x) & 0xff, strchr( s, 0), 10);
- return( s );
- }
- longword inet_addr( char *s )
- {
- return( isaddr( s ) ? aton( s ) : 0 );
- }
- char *sockerr( sock_type *s )
- {
- if ( strlen( s->tcp.err_msg ) < 80 )
- return( s->tcp.err_msg );
- return( NULL );
- }
- #ifdef NOTUSED // S. Lawson - not even close anymore!
- static char *sock_states[] = {
- "Listen","SynSent","SynRec","Established","FinWt1","FinWt2","ClosWt","LastAck"
- "TmWt","Closed"};
- #else
- static char *sock_states[] = {
- "Listen","SynSent","SynRcvd","Established","EstClosing","FinWait1",
- "FinWait2","CloseWait","Closing","LastAck","TimeWait","CloseMSL",
- "Closed"};
- #endif
- char *sockstate( sock_type *s )
- {
- switch ( _chk_socket( s )) {
- case 1 : return( "UDP Socket" );
- case 2 : return( sock_states[ s->tcp.state ] );
- default : return( "Not an active socket");
- }
- }
- longword gethostid(void)
- {
- return( my_ip_addr );
- }
- longword sethostid( longword ip )
- {
- return( my_ip_addr = ip );
- }
- word ntohs( word a )
- {
- return( intel16(a) );
- }
- word htons( word a )
- {
- return( intel16(a) );
- }
- longword ntohl( longword x )
- {
- return( intel( x ));
- }
- longword htonl( longword x )
- {
- return( intel( x ));
- }