Add atmodem cell broadcast driver

1 files changed, 201 insertions, 0 deletions

diff --git a/drivers/atmodem/cbs.c b/drivers/atmodem/cbs.c
new file mode 100644
index 00000000..3d3b6621
--- /dev/null
+++ b/drivers/atmodem/cbs.c
@@ -0,0 +1,201 @@
+/*
+ *
+ *  oFono - Open Source Telephony
+ *
+ *  Copyright (C) 2008-2009  Intel Corporation. All rights reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#define _GNU_SOURCE
+#include <string.h>
+
+#include <glib.h>
+
+#include <ofono/log.h>
+#include <ofono/modem.h>
+#include <ofono/cbs.h>
+#include "util.h"
+
+#include "gatchat.h"
+#include "gatresult.h"
+
+#include "atmodem.h"
+
+static const char *none_prefix[] = { NULL };
+
+static void at_cbm_notify(GAtResult *result, gpointer user_data)
+{
+	struct ofono_cbs *cbs = user_data;
+	const char *hexpdu;
+	int pdulen;
+	GAtResultIter iter;
+	unsigned char pdu[88];
+	long hexpdulen;
+
+	dump_response("at_cbm_notify", TRUE, result);
+
+	g_at_result_iter_init(&iter, result);
+
+	if (!g_at_result_iter_next(&iter, "+CBM:"))
+		return;
+
+	if (!g_at_result_iter_next_number(&iter, &pdulen))
+		return;
+
+	hexpdu = g_at_result_pdu(result);
+
+	if (!hexpdu) {
+		ofono_error("Got a CBM, but no PDU.  Are we in text mode?");
+		return;
+	}
+
+	ofono_debug("Got new Cell Broadcast via CBM: %s, %d", hexpdu, pdulen);
+
+	if (decode_hex_own_buf(hexpdu, -1, &hexpdulen, 0, pdu) == NULL) {
+		ofono_error("Unable to hex-decode the PDU");
+		return;
+	}
+
+	if (hexpdulen != pdulen) {
+		ofono_error("hexpdu length not equal to reported pdu length");
+		return;
+	}
+
+	ofono_cbs_notify(cbs, pdu, pdulen);
+}
+
+static void at_cscb_set_cb(gboolean ok, GAtResult *result, gpointer user_data)
+{
+	struct cb_data *cbd = user_data;
+	ofono_cbs_set_cb_t cb = cbd->cb;
+	struct ofono_error error;
+
+	dump_response("cscb_set_cb", ok, result);
+	decode_at_error(&error, g_at_result_final_response(result));
+
+	cb(&error, cbd->data);
+}
+
+static void at_cbs_set_topics(struct ofono_cbs *cbs, const char *topics,
+				ofono_cbs_set_cb_t cb, void *user_data)
+{
+	GAtChat *chat = ofono_cbs_get_data(cbs);
+	struct cb_data *cbd = cb_data_new(cb, user_data);
+	char *buf;
+	unsigned int id;
+
+	if (!cbd)
+		goto error;
+
+	buf = g_strdup_printf("AT+CSCB=0,\"%s\"", topics);
+
+	id = g_at_chat_send(chat, buf, none_prefix,
+				at_cscb_set_cb, cbd, g_free);
+
+	g_free(buf);
+
+	if (id > 0)
+		return;
+
+error:
+	if (cbd)
+		g_free(cbd);
+
+	{
+		DECLARE_FAILURE(error);
+		cb(&error, user_data);
+	}
+}
+
+static void at_cbs_clear_topics(struct ofono_cbs *cbs,
+				ofono_cbs_set_cb_t cb, void *user_data)
+{
+	GAtChat *chat = ofono_cbs_get_data(cbs);
+	struct cb_data *cbd = cb_data_new(cb, user_data);
+
+	if (!cbd)
+		goto error;
+
+	if (g_at_chat_send(chat, "AT+CSCB=1,\"0-65535\"", none_prefix,
+				at_cscb_set_cb, cbd, g_free) > 0)
+		return;
+
+error:
+	if (cbd)
+		g_free(cbd);
+
+	{
+		DECLARE_FAILURE(error);
+		cb(&error, user_data);
+	}
+}
+
+static gboolean at_cbs_register(gpointer user)
+{
+	struct ofono_cbs *cbs = user;
+	GAtChat *chat = ofono_cbs_get_data(cbs);
+
+	/* This driver assumes that something else will properly setup
+	 * CNMI notifications to deliver CBS broadcasts via +CBM.  We do
+	 * not setup CNMI string ourselves here to avoid race conditions
+	 * with the SMS driver which will also be setting the CNMI itself
+	 *
+	 * The default SMS driver will setup the CNMI for +CBM delivery
+	 * appropriately for us
+	 */
+	g_at_chat_register(chat, "+CBM:", at_cbm_notify, TRUE, cbs, NULL);
+
+	ofono_cbs_register(cbs);
+
+	return FALSE;
+}
+
+static int at_cbs_probe(struct ofono_cbs *cbs, unsigned int vendor,
+				void *data)
+{
+	GAtChat *chat = data;
+
+	ofono_cbs_set_data(cbs, chat);
+	g_idle_add(at_cbs_register, cbs);
+
+	return 0;
+}
+
+static void at_cbs_remove(struct ofono_cbs *cbs)
+{
+}
+
+static struct ofono_cbs_driver driver = {
+	.name = "atmodem",
+	.probe = at_cbs_probe,
+	.remove = at_cbs_remove,
+	.set_topics = at_cbs_set_topics,
+	.clear_topics = at_cbs_clear_topics,
+};
+
+void at_cbs_init()
+{
+	ofono_cbs_driver_register(&driver);
+}
+
+void at_cbs_exit()
+{
+	ofono_cbs_driver_unregister(&driver);
+}