static void start_filter(char *desthost)
{
int s, c;
struct sockaddr_storage dest_ss;
struct sockaddr_storage my_ss;
CatchChild();
/* start listening on port 445 locally */
zero_sockaddr(&my_ss);
s = open_socket_in(SOCK_STREAM, TCP_SMB_PORT, 0, &my_ss, True);
if (s == -1) {
d_printf("bind failed\n");
exit(1);
}
if (listen(s, 5) == -1) {
d_printf("listen failed\n");
}
if (!resolve_name(desthost, &dest_ss, 0x20, false)) {
d_printf("Unable to resolve host %s\n", desthost);
exit(1);
}
while (1) {
int num, revents;
struct sockaddr_storage ss;
socklen_t in_addrlen = sizeof(ss);
num = poll_intr_one_fd(s, POLLIN|POLLHUP, -1, &revents);
if ((num > 0) && (revents & (POLLIN|POLLHUP|POLLERR))) {
c = accept(s, (struct sockaddr *)&ss, &in_addrlen);
if (c != -1) {
if (fork() == 0) {
close(s);
filter_child(c, &dest_ss);
exit(0);
} else {
close(c);
}
}
}
}
}
NTSTATUS read_fd_with_timeout(int fd, char *buf,
size_t mincnt, size_t maxcnt,
unsigned int time_out,
size_t *size_ret)
{
int pollrtn;
ssize_t readret;
size_t nread = 0;
/* just checking .... */
if (maxcnt <= 0)
return NT_STATUS_OK;
/* Blocking read */
if (time_out == 0) {
if (mincnt == 0) {
mincnt = maxcnt;
}
while (nread < mincnt) {
readret = sys_read(fd, buf + nread, maxcnt - nread);
if (readret == 0) {
DEBUG(5,("read_fd_with_timeout: "
"blocking read. EOF from client.\n"));
return NT_STATUS_END_OF_FILE;
}
if (readret == -1) {
return map_nt_error_from_unix(errno);
}
nread += readret;
}
goto done;
}
/* Most difficult - timeout read */
/* If this is ever called on a disk file and
mincnt is greater then the filesize then
system performance will suffer severely as
select always returns true on disk files */
for (nread=0; nread < mincnt; ) {
int revents;
pollrtn = poll_intr_one_fd(fd, POLLIN|POLLHUP, time_out,
&revents);
/* Check if error */
if (pollrtn == -1) {
return map_nt_error_from_unix(errno);
}
/* Did we timeout ? */
if ((pollrtn == 0) ||
((revents & (POLLIN|POLLHUP|POLLERR)) == 0)) {
DEBUG(10,("read_fd_with_timeout: timeout read. "
"select timed out.\n"));
return NT_STATUS_IO_TIMEOUT;
}
readret = sys_read(fd, buf+nread, maxcnt-nread);
if (readret == 0) {
/* we got EOF on the file descriptor */
DEBUG(5,("read_fd_with_timeout: timeout read. "
"EOF from client.\n"));
return NT_STATUS_END_OF_FILE;
}
if (readret == -1) {
return map_nt_error_from_unix(errno);
}
nread += readret;
}
done:
/* Return the number we got */
if (size_ret) {
*size_ret = nread;
}
return NT_STATUS_OK;
}