int Dps_ftp_open_data_port( DPS_CONN *c, DPS_CONN *d){
char buf[64];
unsigned char *a, *p;
int code;
if (!d)
return -1;
if (socket_getname(c, &d->sin) == -1)
return -1;
if (d->port) {
d->sin.sin_port = htons(d->port);
}
if (socket_open(d))
return -1;
if (socket_listen(d)){
return -1;
}
if (socket_getname(d, &d->sin) == -1){
return -1;
}
a = (unsigned char *)&d->sin.sin_addr;
p = (unsigned char *)&d->sin.sin_port;
dps_snprintf(buf, 64, "PORT %d,%d,%d,%d,%d,%d",
a[0], a[1], a[2], a[3], p[0], p[1]);
code = Dps_ftp_send_cmd(c, buf);
if ((code < 0) || strncasecmp(c->buf, "200 ", 4)){
return -1;
}
d->user = c->user;
d->pass = c->pass;
return 0;
}
int socket_listen(UDM_CONN *connp){
connp->sin.sin_port = 0;
if (bind(connp->conn_fd, (struct sockaddr *)&connp->sin,
sizeof(struct sockaddr_in)) == -1){
connp->err = UDM_NET_ERROR;
return -1;
}
if (socket_getname(connp, &connp->sin) == -1)
return -1;
if (listen(connp->conn_fd, 1) == -1){
connp->err = UDM_NET_ERROR;
return -1;
}
return 0;
}