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/****************************************************************************/
/*** File: check.c ***/
/*** Function: ***/
/*** Revisions: ***/
/*** 9/20/93 VEG changed last while loop of file to improve clarity. ***/
/*** Also re-indented and spaced to make source easier to read. ***/
/*** Lastly, changed size of declared character buffer from 4096 + 1 ***/
/*** to just 4096, since read only reads up to the number of characters ***/
/*** requested. Decided to make this a local define, BUF_SIZE. ***/
/*** ***/
/****************************************************************************/
/****************************************************************************/
/*** Include Files ***/
/****************************************************************************/
#include "config.h"
#include "copyright2.h"
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netdb.h>
#include <errno.h>
#include INC_NETINET_IN
#include <arpa/inet.h>
#include "Wlib.h"
#include "defs.h"
#include "struct.h"
#include "data.h"
#include "check.h"
/* For close() and read(), at least in MSVC -SAC */
#include INC_IO
extern void terminate(int error);
/******************************************************************************/
/*** Size lof character data buffer ***/
/******************************************************************************/
#define BUF_SIZE ( 4096 )
/******************************************************************************/
/*** Static Character Buffer ***/
/******************************************************************************/
static char buf[BUF_SIZE];
/******************************************************************************/
/*** check() will obtain the connection to the server and will forever ***/
/*** read server data into a 4096 byte buffer area, unless an error is ***/
/*** detected. ***/
/******************************************************************************/
void check(void)
{
struct sockaddr_in addr;
struct hostent *hp;
int cc, sock;
/* get numeric form */
if ((addr.sin_addr.s_addr = inet_addr(serverName)) == -1)
{
if ((hp = gethostbyname(serverName)) == NULL)
{
fprintf(stderr, "unknown host '%s'\n", serverName);
terminate(0);
}
else
{
addr.sin_addr.s_addr = *(LONG *) hp->h_addr;
}
}
addr.sin_family = AF_INET;
addr.sin_port = htons(xtrekPort);
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0)
{
perror("socket");
terminate(0);
}
printf("checking %s on port %d\n", serverName, xtrekPort);
if (connect(sock, (struct sockaddr *) &addr, sizeof(addr)) < 0)
{
perror("connect");
close(sock);
terminate(0);
}
while ((cc = read(sock, buf, BUF_SIZE)) > 0)
{
if (fwrite(buf, cc, 1, stdout) != 1) {
perror("fwrite");
close(sock);
terminate(0);
}
}
if (cc < 0)
{
perror("read");
}
close(sock);
terminate(0);
}
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