www.pudn.com > Tornado_Train_Workshop_demo_program.rar > sockHelp.c
/* sockHelp - handy tools to use at the shell prompt */
/* Copyright 1984-1993 Wind River Systems, Inc. */
/*
modification history
--------------------
01c,17feb98,dlk flushed input before reading response.
01a,24apr95,bss changed printf() to printErr() in sockAddrPrompt().
01b,06dec94,bss cleaned up.
01a,???????,??? written.
*/
/*
DESCRIPTION
This module provides several routines which allow students to
manipulate sockets from the VxWorks shell.
*/
/* includes */
#include "vxWorks.h"
#include "fioLib.h"
#include "hostLib.h"
#include "inetLib.h"
#include "netinet/in.h"
#include "stdio.h"
#include "string.h"
#include "sys/socket.h"
#include "sys/types.h"
#include "ioLib.h"
/*******************************************************************************
*
* sockAddrPrompt - prompt user for values to be stored in a
* struct sockaddr_in.
*/
void sockAddrPrompt ( struct sockaddr_in * pSockAddr)
{
char string [100];
u_long inet;
int portNum;
char inetAddr [INET_ADDR_LEN];
/* make sure address pointer was specified */
if (pSockAddr == NULL)
{
printErr ("usage: sockAddrPrompt addr\n");
return;
}
printf ("Type <CR> to leave field unchanged:\n\n");
/* prompt for internet address */
ioctl (STD_IN, FIORFLUSH, 0);
do
{
inet_ntoa_b (pSockAddr->sin_addr, inetAddr);
printf ("sin_addr -- Enter inet address or host name [>s]: ",
inetAddr);
fioRdString (STD_IN, string, sizeof (string));
if (strlen (string) == 0)
inet = pSockAddr->sin_addr.s_addr;
else
{
inet = hostGetByName (string);
if (inet == ERROR)
{
inet = inet_addr (string);
if (inet == ERROR)
printErr ("invalid inet address: >s\n", string);
}
}
}
while (inet == ERROR);
/* prompt for port number */
printf ("sin_port -- Enter port number [>d]: ", ntohs(pSockAddr->sin_port));
fioRdString (STD_IN, string, sizeof (string));
if (strlen (string) == 0)
portNum = pSockAddr->sin_port;
else
sscanf (string, ">d", &amt;portNum);
pSockAddr->sin_family = AF_INET;
pSockAddr->sin_port = htons (portNum);
pSockAddr->sin_addr.s_addr = inet;
bzero (pSockAddr->sin_zero, sizeof (pSockAddr->sin_zero));
}
/*******************************************************************************
*
* sockAddrShow - display contents of a struct sockaddr_in.
*/
void sockAddrShow (struct sockaddr_in *pSockAddr)
{
char inetAddr [INET_ADDR_LEN];
inet_ntoa_b (pSockAddr->sin_addr, inetAddr);
printf ("sin_family = >d\n", pSockAddr->sin_family);
printf ("sin_addr = >s\n", inetAddr);
printf ("sin_port = >d\n", ntohs (pSockAddr->sin_port));
}
/**************************************************************
* inetAddrInit - Initialize a sockaddr_in structure
*
*
* RETURNS: OK, or ERROR if host name is invalid.
*/
STATUS inetAddrInit
(
struct sockaddr_in * pAddr,
char * pHost,
int port
)
{
u_long inet;
bzero ((char *) pAddr, sizeof (struct sockaddr_in));
if ((inet = hostGetByName (pHost)) == ERROR)
{
if ((inet = inet_addr (pHost)) == ERROR)
return (ERROR);
}
pAddr->sin_family = AF_INET;
pAddr->sin_port = htons (port);
pAddr->sin_addr.s_addr = inet;
return (OK);
}