mgcp: Add code that will attempt to configure the TDM switch

1 files changed, 161 insertions, 0 deletions

diff --git a/src/mgcp_snmp.c b/src/mgcp_snmp.c
new file mode 100644
index 0000000..0a2d844
--- /dev/null
+++ b/src/mgcp_snmp.c
@@ -0,0 +1,161 @@
+/*
+ * (C) 2010-2011 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2010-2011 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <net-snmp/net-snmp-config.h>
+#include <net-snmp/utilities.h>
+#include <net-snmp/net-snmp-includes.h>
+
+#include <cellmgr_debug.h>
+
+#define HSCOMM "PTI-NexusWare-HSCMCONN-MIB::"
+
+#define PTMC_STREAM_A_RX0	0
+#define PTMC_STREAM_A_TX0	128
+#define PTMC_STREAM_A_RX1	1024
+#define PTMC_STREAM_A_TX1	1152
+
+
+static netsnmp_session g_session, *g_ss;
+
+static void add_pdu_var(netsnmp_pdu *pdu, const char *mib_name,
+			int id1, int id2, const char *value)
+{
+	oid oid_name[MAX_OID_LEN];
+	size_t name_length;
+
+	char buf[4096];
+	buf[4095] = '\0';
+	snprintf(buf, sizeof(buf)-1, "%s.%d.%d", mib_name, id1, id2);
+
+	name_length = MAX_OID_LEN;
+	if (snmp_parse_oid(buf, oid_name, &name_length) == NULL) {
+		snmp_perror(buf);
+		return;
+	}
+
+	if (snmp_add_var(pdu, oid_name, name_length, '=', value)) {
+		snmp_perror(buf);
+		return;
+	}
+}
+
+static int rx_port_get(int port)
+{
+	if (port > 60)
+		return PTMC_STREAM_A_RX1 + port;
+	else
+		return PTMC_STREAM_A_RX0 + port;
+}
+
+static int tx_port_get(int port)
+{
+	if (port > 60)
+		return PTMC_STREAM_A_TX1 + port;
+	else
+		return PTMC_STREAM_A_TX0 + port;
+}
+
+int mgcp_snmp_init()
+{
+	init_snmp("mgcp_mgw");
+	snmp_sess_init(&g_session);
+	g_session.version = SNMP_VERSION_1;
+	g_session.community = (unsigned char *) "private";
+	g_session.community_len = strlen((const char *) g_session.community);
+
+	g_session.peername = "127.0.0.1";
+	g_ss = snmp_open(&g_session);
+	if (!g_ss) {
+		snmp_perror("create failure");
+		snmp_log(LOG_ERR, "Could not connect to the remote.\n");
+		LOGP(DINP, LOGL_ERROR, "Failed to open a SNMP session.\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+int mgcp_snmp_connect(int port, int trunk, int timeslot)
+{
+ 	int status;
+	netsnmp_pdu *response;
+	netsnmp_pdu *pdu;
+	int _rx_port, _tx_port;
+	char tx_port[10];
+	char trunk_name[13], tslot_name[13];
+
+	if (!g_ss)
+		return -1;
+
+	/* have the trunk/timeslot as value */
+	snprintf(trunk_name, sizeof(trunk_name), "%d", trunk);
+	snprintf(tslot_name, sizeof(tslot_name), "%d", timeslot);
+
+	/* rx port, tx side for the port */
+	_rx_port = rx_port_get(port);
+	_tx_port = tx_port_get(port);
+	snprintf(tx_port, sizeof(tx_port), "%d", _tx_port);
+
+	pdu = snmp_pdu_create(SNMP_MSG_SET);
+	if (!pdu) {
+		LOGP(DINP, LOGL_ERROR, "Failed to allocate PDU.\n");
+		return -1;
+	}
+
+	/* This connects the TX side to the given trunk/timeslot */
+	add_pdu_var(pdu, HSCOMM "hscmconnNewDataSourceType.hscmconnStreamTrunk",
+		    trunk, timeslot, "hscmconnStreamPtmc");
+	add_pdu_var(pdu, HSCOMM "hscmconnNewDataSourceTypeInstance.hscmconnStreamPtmc",
+		    trunk, timeslot, "1");
+	add_pdu_var(pdu, HSCOMM "hscmconnNewDataSourceTimeslot.hscmconnStreamTrunk",
+		    trunk, timeslot, tx_port);
+	add_pdu_var(pdu, HSCOMM "hscmconnNewDataSourcePattern.hscmconnStreamTrunk",
+		    trunk, timeslot, "0");
+	add_pdu_var(pdu, HSCOMM "hscmconnNewDataSourceTimeslotCount.hscmconnStreamTrunk",
+		    trunk, timeslot, "1");
+	add_pdu_var(pdu, HSCOMM "hscmconnConnectBidirectional.hscmconnStreamTrunk",
+		    trunk, timeslot, "false");
+
+	/* This connect the RX side to the given trunk/timeslot */
+	add_pdu_var(pdu, HSCOMM "hscmconnNewDataSourceType.hscmconnStreamPtmc",
+		    1, _rx_port, "hscmconnStreamTrunk");
+	add_pdu_var(pdu, HSCOMM "hscmconnNewDataSourceTypeInstance.hscmconnStreamPtmc",
+		    1, _rx_port, trunk_name);
+	add_pdu_var(pdu, HSCOMM "hscmconnNewDataSourceTimeslot.hscmconnStreamPtmc",
+		    1, _rx_port, tslot_name);
+	add_pdu_var(pdu, HSCOMM "hscmconnNewDataSourcePattern.hscmconnStreamPtmc",
+		    1, _rx_port, "0");
+	add_pdu_var(pdu, HSCOMM "hscmconnNewDataSourceTimeslotCount.hscmconnStreamPtmc",
+		    1, _rx_port, "1");
+	add_pdu_var(pdu, HSCOMM "hscmconnConnectBidirectional.hscmconnStreamPtmc",
+		    1, _rx_port, "false");
+
+
+	status = snmp_synch_response(g_ss, pdu, &response);
+	if (status == STAT_ERROR) {
+		snmp_sess_perror("set failed", g_ss);
+	} else if (status == STAT_TIMEOUT) {
+		fprintf(stderr, "Timeout for SNMP.\n");
+ 	}
+ 
+	if (response)
+		snmp_free_pdu(response);
+	return 0;
+}