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/*
* Copyright (c) 2000, Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* A copy of the GNU General Public License can be found at
* http://www.gnu.org/
*
* Written by DJ Delorie <dj@cygnus.com>
*
*/
/* Simplified socket access functions */
#include "win32.h"
#include <winsock.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include "simpsock.h"
#include "msg.h"
#define SSBUFSZ 1024
SimpleSocket::SimpleSocket (char *hostname, int port)
{
static int initted = 0;
if (!initted)
{
initted = 1;
WSADATA d;
WSAStartup (MAKEWORD (1,1), &d);
}
s = INVALID_SOCKET;
buf = (char *) malloc (SSBUFSZ + 3);
putp = getp = 0;
int i1, i2, i3, i4;
unsigned char ip[4];
if (sscanf (hostname, "%d.%d.%d.%d", &i1, &i2, &i3, &i4) == 4)
{
ip[0] = i1;
ip[1] = i2;
ip[2] = i3;
ip[3] = i4;
}
else
{
struct hostent *he;
he = gethostbyname (hostname);
if (!he)
{
msg ("Can't resolve `%s'\n", hostname);
return;
}
memcpy (ip, he->h_addr_list[0], 4);
}
s = socket (AF_INET, SOCK_STREAM, 0);
if (s == INVALID_SOCKET)
{
msg ("Can't create socket, %d", WSAGetLastError ());
return;
}
struct sockaddr_in name;
memset (&name, 0, sizeof (name));
name.sin_family = AF_INET;
name.sin_port = htons (port);
memcpy (&name.sin_addr, ip, 4);
if (connect (s, (sockaddr *)&name, sizeof(name)))
{
msg ("Can't connect to %s:%d", hostname, port);
closesocket (s);
s = INVALID_SOCKET;
return;
}
return;
}
SimpleSocket::~SimpleSocket ()
{
if (s != INVALID_SOCKET)
closesocket (s);
s = INVALID_SOCKET;
if (buf)
free (buf);
buf = 0;
}
int
SimpleSocket::ok ()
{
if (s == INVALID_SOCKET)
return 0;
return 1;
}
int
SimpleSocket::printf (char *fmt, ...)
{
char localbuf[SSBUFSZ];
va_list args;
va_start (args, fmt);
vsprintf (localbuf, fmt, args);
return send (s, localbuf, strlen (localbuf), 0);
}
int
SimpleSocket::write (char *localbuf, int len)
{
return send (s, localbuf, len, 0);
}
int
SimpleSocket::fill ()
{
if (putp == getp)
putp = getp = 0;
int n = SSBUFSZ - putp;
if (n == 0)
return 0;
int r = recv (s, buf + putp, n, 0);
if (r > 0)
{
putp += r;
return r;
}
return 0;
}
char *
SimpleSocket::gets ()
{
if (getp > 0 && putp > getp)
{
memmove (buf, buf+getp, putp-getp);
putp -= getp;
getp = 0;
}
if (putp == getp)
fill();
// getp is zero, always, here, and putp is the count
char *nl;
while ((nl = (char *)memchr (buf, '\n', putp)) == NULL && putp < SSBUFSZ)
if (fill () <= 0)
break;
if (nl)
{
getp = nl - buf + 1;
while ((*nl == '\n' || *nl == '\r') && nl >= buf)
*nl-- = 0;
}
else
{
getp = putp;
nl = buf + putp;
nl[1] = 0;
}
return buf;
}
#define MIN(a,b) ((a) < (b) ? (a) : (b))
int
SimpleSocket::read (char *ubuf, int ulen)
{
int n, rv=0;
if (putp > getp)
{
n = MIN (ulen, putp-getp);
memmove (ubuf, buf+getp, n);
getp += n;
ubuf += n;
ulen -= n;
rv += n;
}
while (ulen > 0)
{
n = recv (s, ubuf, ulen, 0);
if (n <= 0)
return rv;
ubuf += n;
ulen -= n;
rv += n;
}
return rv;
}
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