int
ndmca_data_connect (struct ndm_session *sess)
{
struct ndmconn * conn = sess->plumb.data;
struct ndm_control_agent *ca = &sess->control_acb;
int rc;
ndmp9_addr addr;
if (ca->job.tape_tcp) {
char *host;
char *port;
struct sockaddr_in sin;
host = ca->job.tape_tcp;
port = strchr(ca->job.tape_tcp, ':');
*port++ = '\0';
rc = ndmhost_lookup(host, &sin);
addr.addr_type = NDMP9_ADDR_TCP;
addr.ndmp9_addr_u.tcp_addr.ip_addr = ntohl(sin.sin_addr.s_addr);
addr.ndmp9_addr_u.tcp_addr.port = atoi(port);
} else {
addr = ca->mover_addr;
}
NDMC_WITH(ndmp9_data_connect, NDMP9VER)
request->addr = addr;
rc = NDMC_CALL(conn);
NDMC_ENDWITH
return rc;
}
int
ndmis_tcp_listen (struct ndm_session *sess, struct ndmp9_addr *listen_addr)
{
struct ndm_image_stream *is = &sess->plumb.image_stream;
ndmp9_tcp_addr * tcp_addr = &listen_addr->ndmp9_addr_u.tcp_addr;
struct ndmconn * conn;
struct sockaddr c_sa;
struct sockaddr l_sa;
struct sockaddr_in * sin;
socklen_t len;
int listen_sock = -1;
char * what = "???";
/*
* Get the IP address thru which the CONTROL agent connected
* to this session. The CONTROL agent may influence the
* network used for the image-stream on multi-homed hosts
* simply by connecting to the prefered IP address.
*/
what = "determine-conn";
conn = sess->plumb.control;
if (!conn || conn->conn_type != NDMCONN_TYPE_REMOTE) {
/*
* If CONTROL is resident, try the other
* control connections in hopes of finding
* a clue about what IP address to offer.
*/
conn = sess->plumb.data;
if (!conn || conn->conn_type != NDMCONN_TYPE_REMOTE) {
conn = sess->plumb.tape;
if (!conn || conn->conn_type != NDMCONN_TYPE_REMOTE) {
conn = 0;
}
}
}
if (conn) {
/*
* We found a connection to use for determining
* what IP address to offer.
*/
what = "getsockname-ctrl";
len = sizeof c_sa;
if (getsockname (ndmconn_fileno(conn), &c_sa, &len) < 0) {
/* we'll try the fallback rules */
conn = 0;
}
}
if (!conn) {
/*
* For whatever reason, we can't determine a good
* IP address from the connections. Try the boring
* fallback rules.
*/
ndmos_sync_config_info (sess);
sin = (struct sockaddr_in *) &c_sa;
what = "ndmhost_lookup";
if (ndmhost_lookup (sess->config_info.hostname, sin) != 0)
goto fail;
}
/* c_sa is a sockaddr_in for the IP address to use */
what = "socket";
listen_sock = socket (AF_INET, SOCK_STREAM, 0);
if (listen_sock < 0) goto fail;
/* could bind() to more restrictive addr based on c_sa */
NDMOS_MACRO_SET_SOCKADDR(&l_sa, 0, 0);
what = "bind";
if (bind (listen_sock, &l_sa, sizeof l_sa) < 0) goto fail;
what = "listen";
if (listen (listen_sock, 1) < 0) goto fail;
ndmos_condition_listen_socket (sess, listen_sock);
/* Get the port */
what = "getsockname-listen";
len = sizeof l_sa;
if (getsockname (listen_sock, &l_sa, &len) < 0) goto fail;
/*
* Fill in the return address
*/
listen_addr->addr_type = NDMP9_ADDR_TCP;
tcp_addr = &listen_addr->ndmp9_addr_u.tcp_addr;
/* IP addr from CONTROL connection, or where ever c_sa came from */
sin = (struct sockaddr_in *) &c_sa;
tcp_addr->ip_addr = ntohl (sin->sin_addr.s_addr);
/* port from the bind() and getsockname() above */
sin = (struct sockaddr_in *) &l_sa;
tcp_addr->port = ntohs (sin->sin_port);
/*
* Start the listen channel
*/
ndmchan_start_listen (&is->remote.listen_chan, listen_sock);
is->remote.connect_status = NDMIS_CONN_LISTEN;
is->remote.listen_addr = *listen_addr;
return 0;
fail:
ndmalogf (sess, 0, 2, "ndmis_tcp_listen(): %s failed", what);
if (listen_sock >= 0) close (listen_sock);
return -1;
}