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/*
** Copyright 1998 - 2001 Double Precision, Inc.
** See COPYING for distribution information.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include "tcpremoteinfo.h"
#include "soxwrap/sconnect.h"
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#if HAVE_FCNTL_H
#include <fcntl.h>
#endif
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include "soxwrap/soxwrap.h"
const char *tcpremoteinfo(const RFC1035_ADDR *laddr, int lport,
const RFC1035_ADDR *raddr, int rport, const char **ostype)
{
int fd;
time_t current_time, max_time;
fd_set fds;
struct timeval tv;
static char buf[512];
char *bufptr;
int bufleft, n;
char *p;
char *q;
RFC1035_NETADDR sin;
const struct sockaddr *addr;
int addrlen;
fd=rfc1035_mksocket(SOCK_STREAM, 0, &n);
if (fd < 0) return (0);
if (rfc1035_mkaddress(n, &sin, laddr, 0, &addr, &addrlen) < 0)
{
close(fd);
return (0);
}
if (sox_bind(fd, addr, addrlen) < 0)
{
sox_close(fd);
return (0);
}
time (¤t_time);
max_time=current_time+30;
if (rfc1035_mkaddress(n, &sin, raddr, htons(113), &addr, &addrlen) < 0)
{
sox_close(fd);
return (0);
}
if (s_connect(fd, addr, addrlen, max_time - current_time) < 0)
{
sox_close(fd);
return (0);
}
sprintf(buf, "%d,%d\r\n", ntohs(rport), ntohs(lport));
bufptr=buf;
bufleft=strlen(buf);
while (bufleft)
{
time(¤t_time);
if (current_time >= max_time)
{
sox_close(fd);
return (0);
}
FD_ZERO(&fds);
FD_SET(fd, &fds);
tv.tv_sec=max_time-current_time;
tv.tv_usec=0;
if (sox_select(fd+1, 0, &fds, 0, &tv) != 1 ||
!FD_ISSET(fd, &fds))
{
sox_close(fd);
return (0);
}
n=sox_write(fd, bufptr, bufleft);
if (n <= 0)
{
sox_close(fd);
return (0);
}
bufptr += n;
bufleft -= n;
}
bufptr=buf;
bufleft=sizeof(buf);
do
{
if (bufleft == 0)
{
sox_close(fd);
return (0);
}
time(¤t_time);
if (current_time >= max_time)
{
sox_close(fd);
return (0);
}
FD_ZERO(&fds);
FD_SET(fd, &fds);
tv.tv_sec=max_time-current_time;
tv.tv_usec=0;
if (sox_select(fd+1, &fds, 0, 0, &tv) != 1 ||
!FD_ISSET(fd, &fds))
{
sox_close(fd);
return (0);
}
n=sox_read(fd, bufptr, bufleft);
if (n <= 0)
{
sox_close(fd);
return (0);
}
bufptr += n;
bufleft -= n;
} while (bufptr[-1] != '\n');
sox_close(fd);
bufptr[-1]=0;
--bufptr;
if (bufptr > buf && bufptr[-1] == '\r')
bufptr[-1]=0;
if ((p=strchr(buf, ':')) == 0)
return (0);
q=++p;
if ((p=strchr(p, ':')) == 0)
return (0);
*p++=0;
q=strtok(q, " \t");
if (!q || strcmp(q, "USERID")) return (0);
if (ostype) *ostype=p;
if ((p=strchr(p, ':')) == 0)
return (0);
*p++=0;
while (*p && (*p == ' ' || *p == '\t')) p++;
return (p);
}
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