binding: telephony: add initial binding

Split out binding from phone application

Bug-AGL: SPEC-1757
Change-Id: Ie66364e20528ec1b7c67deb20247a843b289b68c
Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>

1 files changed, 370 insertions, 0 deletions

diff --git a/binding/telephony-binding.c b/binding/telephony-binding.c
new file mode 100644
index 0000000..f6db061
--- /dev/null
+++ b/binding/telephony-binding.c
@@ -0,0 +1,370 @@
+/*
+ * Copyright (C) 2017-2018 Konsulko Group
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define _GNU_SOURCE
+
+#include <glib.h>
+#include <json-c/json.h>
+#include <string.h>
+
+#define AFB_BINDING_VERSION 2
+#include <afb/afb-binding.h>
+
+#include "ofono_manager.h"
+#include "ofono_voicecallmanager.h"
+#include "ofono_voicecall.h"
+
+static OrgOfonoVoiceCallManager *vcm;
+static OrgOfonoVoiceCall *incoming_call, *voice_call;
+static struct afb_event call_state_changed_event;
+static struct afb_event dialing_call_event;
+static struct afb_event incoming_call_event;
+static struct afb_event terminated_call_event;
+
+static void dial(struct afb_req request)
+{
+	struct json_object *query, *val;
+	const char *number;
+
+	query = afb_req_json(request);
+	json_object_object_get_ex(query, "value", &val);
+	if (json_object_is_type(val, json_type_string)) {
+		number = json_object_get_string(val);
+		if (voice_call) {
+			AFB_ERROR("dial: cannot dial with active call");
+			afb_req_fail(request, "active call", NULL);
+		} else {
+			AFB_DEBUG("dial: %s...\n", number);
+			if (ofono_voicecallmanager_dial(vcm, (gchar *)number, "")) {
+				afb_req_success(request, NULL, NULL);
+			} else {
+				AFB_ERROR("dial: failed to dial number\n");
+				afb_req_fail(request, "failed dial", NULL);
+			}
+		}
+	} else {
+		AFB_ERROR("dial: no phone number parameter\n");
+		afb_req_fail(request, "no number", NULL);
+	}
+}
+
+static void hangup(struct afb_req request)
+{
+	if (voice_call) {
+		AFB_DEBUG("Hangup voice call\n");
+		ofono_voicecall_hangup(voice_call);
+		afb_req_success(request, NULL, NULL);
+	} else if (incoming_call) {
+		AFB_DEBUG("Reject incoming call\n");
+		ofono_voicecall_hangup(incoming_call);
+		afb_req_success(request, NULL, NULL);
+	} else {
+		AFB_ERROR("Hangup: no active call");
+		afb_req_fail(request, "failed hangup", NULL);
+	}
+}
+
+static void answer(struct afb_req request)
+{
+	if (incoming_call) {
+		AFB_DEBUG("Answer voice call\n");
+		voice_call = incoming_call;
+		ofono_voicecall_answer(voice_call);
+	} else {
+		AFB_ERROR("Answer: no incoming call");
+	}
+}
+
+static void subscribe(struct afb_req request)
+{
+	const char *value = afb_req_value(request, "value");
+	if(value) {
+		if (!strcasecmp(value, "callStateChanged")) {
+			afb_req_subscribe(request, call_state_changed_event);
+		} else if (!strcasecmp(value, "dialingCall")) {
+			afb_req_subscribe(request, dialing_call_event);
+		} else if (!strcasecmp(value, "incomingCall")) {
+			afb_req_subscribe(request, incoming_call_event);
+		} else if (!strcasecmp(value, "terminatedCall")) {
+			afb_req_subscribe(request, terminated_call_event);
+		} else {
+			afb_req_fail(request, "failed", "Invalid event");
+			return;
+		}
+	}
+
+	afb_req_success(request, NULL, NULL);
+}
+
+static void unsubscribe(struct afb_req request)
+{
+	const char *value = afb_req_value(request, "value");
+	if(value) {
+		if (!strcasecmp(value, "callStateChanged")) {
+			afb_req_unsubscribe(request, call_state_changed_event);
+		} else if (!strcasecmp(value, "dialingCall")) {
+			afb_req_unsubscribe(request, dialing_call_event);
+		} else if (!strcasecmp(value, "incomingCall")) {
+			afb_req_unsubscribe(request, incoming_call_event);
+		} else if (!strcasecmp(value, "terminatedCall")) {
+			afb_req_unsubscribe(request, terminated_call_event);
+		} else {
+			afb_req_fail(request, "failed", "Invalid event");
+			return;
+		}
+	}
+
+	afb_req_success(request, NULL, NULL);
+}
+
+static void call_state_changed_cb(OrgOfonoVoiceCall *vc, gchar *state)
+{
+	struct json_object *call_state;
+	call_state = json_object_new_object();
+	json_object_object_add(call_state, "state", json_object_new_string(state));
+	afb_event_push(call_state_changed_event, call_state);
+}
+
+static void incoming_call_cb(OrgOfonoVoiceCallManager *manager, gchar *op, gchar *clip)
+{
+	struct json_object *call_info;
+
+	call_info = json_object_new_object();
+	json_object_object_add(call_info, "clip", json_object_new_string(clip));
+	afb_event_push(incoming_call_event, call_info);
+	incoming_call = ofono_voicecall_new(op, call_state_changed_cb);
+}
+
+static void dialing_call_cb(OrgOfonoVoiceCallManager *manager, gchar *op, gchar *colp)
+{
+	struct json_object *call_info;
+
+	call_info = json_object_new_object();
+	json_object_object_add(call_info, "colp", json_object_new_string(colp));
+	afb_event_push(dialing_call_event, call_info);
+	voice_call = ofono_voicecall_new(op, call_state_changed_cb);
+}
+
+static void terminated_call_cb(OrgOfonoVoiceCallManager *manager, gchar *op)
+{
+	if (incoming_call) {
+		ofono_voicecall_free(incoming_call);
+		incoming_call = NULL;
+	} else if (voice_call) {
+		ofono_voicecall_free(voice_call);
+	}
+	voice_call = NULL;
+	afb_event_push(terminated_call_event, NULL);
+}
+
+static void *main_loop_thread(void *unused)
+{
+	GMainLoop *loop = g_main_loop_new(NULL, FALSE);
+	g_main_loop_run(loop);
+	return NULL;
+}
+
+static int ofono_init_default_modem(void)
+{
+	int ret = 0;
+	const gchar *modem_path = ofono_manager_get_default_modem_path();
+
+	if (modem_path) {
+		vcm = ofono_voicecallmanager_init(modem_path,
+				incoming_call_cb,
+				dialing_call_cb,
+				terminated_call_cb);
+		if (!vcm) {
+			AFB_ERROR("failed to initialize voice call manager\n");
+			ret = -1;
+		}
+	} else {
+		AFB_ERROR("default modem not set\n");
+		ret = -1;
+	}
+
+	return ret;
+}
+
+static gboolean is_hfp_dev_and_init(struct json_object *dev)
+{
+	int ret;
+	gboolean hfp = FALSE;
+	struct json_object *name, *address, *hfp_connected;
+	json_object_object_get_ex(dev, "Name", &name);
+	json_object_object_get_ex(dev, "Address", &address);
+	json_object_object_get_ex(dev, "HFPConnected", &hfp_connected);
+	if (!strcmp(json_object_get_string(hfp_connected), "True")) {
+		ret = ofono_manager_set_default_modem(json_object_get_string(address));
+		if (ret == 0) {
+			ofono_init_default_modem();
+			hfp = TRUE;
+		}
+	}
+
+	return hfp;
+}
+
+static void discovery_result_cb(void *closure, int status, struct json_object *result)
+{
+	enum json_type type;
+	struct json_object *devs, *dev;
+	int i;
+
+	json_object_object_foreach(result, key, val) {
+		type = json_object_get_type(val);
+		switch (type) {
+			case json_type_array:
+				json_object_object_get_ex(result, key, &devs);
+				for (i = 0; i < json_object_array_length(devs); i++) {
+					dev = json_object_array_get_idx(devs, i);
+					if (is_hfp_dev_and_init(dev))
+						break;
+				}
+				break;
+			case json_type_string:
+			case json_type_boolean:
+			case json_type_double:
+			case json_type_int:
+			case json_type_object:
+			case json_type_null:
+			default:
+				break;
+		}
+	}
+}
+
+static void ofono_hfp_init(void)
+{
+	struct json_object *args, *response;
+
+	args = json_object_new_object();
+	json_object_object_add(args , "value", json_object_new_string("connection"));
+	afb_service_call_sync("Bluetooth-Manager", "subscribe", args, &response);
+
+	args = json_object_new_object();
+	afb_service_call("Bluetooth-Manager", "discovery_result", args, discovery_result_cb, &response);
+}
+
+static int ofono_init(void)
+{
+	pthread_t tid;
+	int ret = 0;
+
+	call_state_changed_event = afb_daemon_make_event("callStateChanged");
+	dialing_call_event = afb_daemon_make_event("dialingCall");
+	incoming_call_event = afb_daemon_make_event("incomingCall");
+	terminated_call_event = afb_daemon_make_event("terminatedCall");
+
+	ret = afb_daemon_require_api("Bluetooth-Manager", 1);
+	if (ret) {
+		AFB_ERROR("unable to initialize bluetooth binding");
+		return -1;
+	}
+
+	/* Start the main loop thread */
+	pthread_create(&tid, NULL, main_loop_thread, NULL);
+
+	ret = ofono_manager_init();
+	if (ret == 0) {
+		ofono_manager_invalidate_default_modem();
+		ofono_hfp_init();
+	} else {
+		AFB_ERROR("failed to initialize ofono manager");
+	}
+
+	return ret;
+}
+
+static const struct afb_verb_v2 verbs[]= {
+	{
+		.verb		= "dial",
+		.callback	= dial,
+		.auth		= NULL,
+		.session	= AFB_SESSION_NONE,
+	},
+	{
+		.verb		= "hangup",
+		.callback	= hangup,
+		.auth		= NULL,
+		.session	= AFB_SESSION_NONE,
+	},
+	{
+		.verb		= "answer",
+		.callback	= answer,
+		.auth		= NULL,
+		.session	= AFB_SESSION_NONE,
+	},
+	{
+		.verb		= "subscribe",
+		.callback	= subscribe,
+		.auth		= NULL,
+		.session	= AFB_SESSION_NONE,
+	},
+	{
+		.verb		= "unsubscribe",
+		.callback	= unsubscribe,
+		.auth		= NULL,
+		.session	= AFB_SESSION_NONE,
+	},
+	{NULL}
+};
+
+static int init()
+{
+	AFB_NOTICE("Initializing telephony service");
+
+	return ofono_init();
+}
+
+static void process_connection_event(struct json_object *object)
+{
+	struct json_object *args, *response, *status_obj, *address_obj;
+	const char *status, *address;
+
+	json_object_object_get_ex(object, "Status", &status_obj);
+	status = json_object_get_string(status_obj);
+
+	if (!g_strcmp0(status, "connected")) {
+		args = json_object_new_object();
+		afb_service_call("Bluetooth-Manager", "discovery_result",
+				 args, discovery_result_cb, &response);
+	} else if (!g_strcmp0(status, "disconnected")) {
+		json_object_object_get_ex(object, "Address", &address_obj);
+		address = json_object_get_string(address_obj);
+		if (!g_strcmp0(address, ofono_manager_get_default_modem_address())) {
+			ofono_manager_invalidate_default_modem();
+			ofono_voicecallmanager_free(vcm);
+		}
+	} else
+		AFB_ERROR("Unsupported connection status: %s\n", status);
+}
+
+static void onevent(const char *event, struct json_object *object)
+{
+	if (!g_strcmp0(event, "Bluetooth-Manager/connection"))
+		process_connection_event(object);
+	 else
+		AFB_ERROR("Unsupported event: %s\n", event);
+}
+
+const struct afb_binding_v2 afbBindingV2 = {
+	.api = "telephony",
+	.specification = NULL,
+	.verbs = verbs,
+	.init = init,
+	.onevent = onevent,
+};