int __init nat64_init(void)
{
pr_debug("\n\n\n%s", banner);
pr_debug("\n\nNAT64 module inserted!");
// Load default configuration
init_nat_config(&cs);
/*
* Include nf_conntrack dependency
*/
need_conntrack();
/*
* Include nf_conntrack_ipv4 dependency.
* IPv4 conntrack is needed in order to handle complete packets, and not
* fragments.
*/
need_ipv4_conntrack();
nat64_determine_incoming_tuple_init();
// BEGIN: code imported from nat64_init of Julius Kriukas' implementation
// Init IPv4 addresses pool
init_pools(&cs); // Bernardo
nat64_create_bib_session_memory();
pr_debug("NAT64: The bib table slab cache was succesfully created.");
// END: code imported from nat64_init of Julius Kriukas' implementation
nat64_create_character_device();
// Load netlink sockets. Rob
// BEGIN
// Create netlink socket, register 'my_nl_rcv_msg' as callback function. // Rob
my_nl_sock = netlink_kernel_create(&init_net, NETLINK_USERSOCK, 0,
my_nl_rcv_msg, NULL, THIS_MODULE);
if (!my_nl_sock)
{
pr_warning("NAT64: %s: Creation of netlink socket failed.\n", __func__);
goto error;
}
// END
return xt_register_target(&nat64_tg_reg);
// The following goto were inspired by Julius Kriukas' nat64_init's goto
error:
return -EINVAL;
}
int main(int argc, char *argv[]) {
pool *p;
const char *remote_name;
pr_netaddr_t *remote_addr;
conn_t *client_conn, *ctrl_conn, *data_conn;
unsigned int connect_timeout, remote_port;
struct proxy_ftp_client *ftp;
int res, timerno;
char buf[1024];
/* Seed the random number generator. */
/* XXX Use random(3) in the future? */
srand((unsigned int) (time(NULL) * getpid()));
init_pools();
init_privs();
init_log();
init_regexp();
init_inet();
init_netio();
init_netaddr();
init_fs();
init_class();
init_config();
init_stash();
pr_log_setdebuglevel(10);
log_stderr(TRUE);
pr_trace_use_stderr(TRUE);
pr_trace_set_levels("DEFAULT", 1, 20);
p = make_sub_pool(permanent_pool);
pr_pool_tag(p, "FTP Client Pool");
remote_name = "ftp.proftpd.org";
remote_addr = pr_netaddr_get_addr(p, remote_name, NULL);
if (remote_addr == NULL) {
fprintf(stderr, "Failed to get addr for '%s': %s\n", remote_name,
strerror(errno));
destroy_pool(p);
return 1;
}
fprintf(stdout, "Resolved name '%s' to IP address '%s'\n", remote_name,
pr_netaddr_get_ipstr(remote_addr));
remote_port = 21;
connect_timeout = 5;
ftp = proxy_ftp_connect(p, remote_addr, remote_port, connect_timeout, NULL);
if (ftp == NULL) {
fprintf(stderr, "Error connecting to FTP server: %s\n", strerror(errno));
destroy_pool(p);
return 1;
}
fprintf(stdout, "Successfully connected to %s:%d from %s:%d\n", remote_name,
remote_port, pr_netaddr_get_ipstr(client_conn->local_addr),
ntohs(pr_netaddr_get_port(client_conn->local_addr)));
res = proxy_ftp_disconnect(ftp);
if (res < 0) {
fprintf(stderr, "Error disconnecting from FTP server: %s\n",
strerror(errno));
destroy_pool(p);
return 1;
}
ctrl_conn = pr_inet_openrw(p, client_conn, NULL, PR_NETIO_STRM_OTHR,
-1, -1, -1, FALSE);
if (ctrl_conn == NULL) {
fprintf(stderr, "Error opening control connection: %s\n", strerror(errno));
pr_inet_close(p, client_conn);
destroy_pool(p);
return 1;
}
fprintf(stdout, "Reading response from %s:%d\n", remote_name, remote_port);
/* Read the response */
memset(buf, '\0', sizeof(buf));
/* XXX We need to write our own version of netio_telnet_gets(), with
* the buffering to handle reassembly of a full FTP response out of
* multiple TCP packets. Not sure why the existing netio_telnet_gets()
* is not sufficient. But we don't need the handling of Telnet codes
* in our reading. But DO generate the 'core.ctrl-read' event, so that
* any event listeners get a chance to process the data we've received.
* (Or maybe use 'mod_proxy.server-read', and differentiate between
* client and server reads/writes?)
*/
if (pr_netio_read(ctrl_conn->instrm, buf, sizeof(buf)-1, 5) < 0) {
fprintf(stderr, "Error reading response from server: %s\n",
strerror(errno));
} else {
fprintf(stdout, "Response: \"%s\"\n", buf);
}
/* Disconnect */
res = pr_netio_printf(ctrl_conn->outstrm, "%s\r\n", C_QUIT);
if (res < 0) {
fprintf(stderr, "Error writing command to server: %s", strerror(errno));
}
pr_inet_close(p, ctrl_conn);
pr_inet_close(p, client_conn);
destroy_pool(p);
return 0;
}