[PATCH 1/3] Add TTY (hearing impaired) support

[Lucas De Marchi <lucas.demarchi@profusion.mobi>]

[-- Attachment #1: Type: text/plain, Size: 14509 bytes --]

---
 Makefile.am              |    5 +-
 include/dbus.h           |    1 +
 include/text-telephony.h |   71 ++++++++++
 src/modem.c              |    1 +
 src/ofono.h              |    2 +
 src/text-telephony.c     |  333 ++++++++++++++++++++++++++++++++++++++++++++++
 6 files changed, 411 insertions(+), 2 deletions(-)
 create mode 100644 include/text-telephony.h
 create mode 100644 src/text-telephony.c

diff --git a/Makefile.am b/Makefile.am
index f841b4c..ee1313d 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -13,7 +13,8 @@ include_HEADERS = include/log.h include/plugin.h include/history.h \
 			include/cbs.h include/call-volume.h \
 			include/gprs.h include/gprs-context.h \
 			include/radio-settings.h include/stk.h \
-			include/audio-settings.h include/nettime.h
+			include/audio-settings.h include/nettime.h \
+			include/text-telephony.h
 
 nodist_include_HEADERS = include/version.h
 
@@ -318,7 +319,7 @@ src_ofonod_SOURCES = $(gdbus_sources) $(builtin_sources) src/ofono.ver \
 			src/radio-settings.c src/stkutil.h src/stkutil.c \
 			src/nettime.c src/stkagent.c src/stkagent.h \
 			src/simfs.c src/simfs.h src/audio-settings.c \
-			src/smsagent.c src/smsagent.h
+			src/smsagent.c src/smsagent.h src/text-telephony.c
 
 src_ofonod_LDADD = $(builtin_libadd) @GLIB_LIBS@ @DBUS_LIBS@ @CAPNG_LIBS@ -ldl
 
diff --git a/include/dbus.h b/include/dbus.h
index 59b2aae..9e29afb 100644
--- a/include/dbus.h
+++ b/include/dbus.h
@@ -48,6 +48,7 @@ extern "C" {
 #define OFONO_PHONEBOOK_INTERFACE "org.ofono.Phonebook"
 #define OFONO_RADIO_SETTINGS_INTERFACE "org.ofono.RadioSettings"
 #define OFONO_AUDIO_SETTINGS_INTERFACE "org.ofono.AudioSettings"
+#define OFONO_TEXT_TELEPHONY_INTERFACE "org.ofono.TextTelephony"
 #define OFONO_SIM_MANAGER_INTERFACE "org.ofono.SimManager"
 #define OFONO_VOICECALL_INTERFACE "org.ofono.VoiceCall"
 #define OFONO_VOICECALL_MANAGER_INTERFACE "org.ofono.VoiceCallManager"
diff --git a/include/text-telephony.h b/include/text-telephony.h
new file mode 100644
index 0000000..fafa7dd
--- /dev/null
+++ b/include/text-telephony.h
@@ -0,0 +1,71 @@
+/*
+ *
+ *  oFono - Open Source Telephony
+ *
+ *  Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+ *  Copyright (C) 2010  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
+ *
+ */
+
+#ifndef __OFONO_TEXT_TELEPHONY_H
+#define __OFONO_TEXT_TELEPHONY_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <ofono/types.h>
+
+struct ofono_text_telephony;
+
+typedef void (*ofono_text_telephony_set_cb_t)(const struct ofono_error *error,
+						void *data);
+typedef void (*ofono_text_telephony_query_cb_t)(const struct ofono_error *error,
+						ofono_bool_t enable, void *data);
+
+struct ofono_text_telephony_driver {
+	const char *name;
+	int (*probe)(struct ofono_text_telephony *tt, unsigned int vendor,
+			void *data);
+	void (*remove)(struct ofono_text_telephony *tt);
+	void (*query_tty)(struct ofono_text_telephony *tt,
+				ofono_text_telephony_query_cb_t cb,
+				void *data);
+	void (*set_tty)(struct ofono_text_telephony *tt,
+				int enable,
+				ofono_text_telephony_set_cb_t cb,
+				void *data);
+};
+
+int ofono_text_telephony_driver_register(const struct ofono_text_telephony_driver *d);
+void ofono_text_telephony_driver_unregister(const struct ofono_text_telephony_driver *d);
+
+struct ofono_text_telephony *ofono_text_telephony_create(struct ofono_modem *modem,
+								unsigned int vendor,
+								const char *driver,
+								void *data);
+
+void ofono_text_telephony_register(struct ofono_text_telephony *tt);
+void ofono_text_telephony_remove(struct ofono_text_telephony *tt);
+
+void ofono_text_telephony_set_data(struct ofono_text_telephony *tt, void *data);
+void *ofono_text_telephony_get_data(struct ofono_text_telephony *tt);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __OFONO_TEXT_TELEPHONY_H */
diff --git a/src/modem.c b/src/modem.c
index 3776461..6f1db7c 100644
--- a/src/modem.c
+++ b/src/modem.c
@@ -857,6 +857,7 @@ static const struct {
 	{ OFONO_SIM_MANAGER_INTERFACE,			"sim"	},
 	{ OFONO_STK_INTERFACE,				"stk"	},
 	{ OFONO_CONNECTION_MANAGER_INTERFACE,		"gprs"	},
+	{ OFONO_TEXT_TELEPHONY_INTERFACE,		"tty"	},
 	{ },
 };
 
diff --git a/src/ofono.h b/src/ofono.h
index 4d76d20..5218f42 100644
--- a/src/ofono.h
+++ b/src/ofono.h
@@ -124,6 +124,7 @@ enum ofono_atom_type {
 	OFONO_ATOM_TYPE_AUDIO_SETTINGS = 19,
 	OFONO_ATOM_TYPE_STK = 20,
 	OFONO_ATOM_TYPE_NETTIME = 21,
+	OFONO_ATOM_TYPE_TEXT_TELEPHONY = 22
 };
 
 enum ofono_atom_watch_condition {
@@ -197,6 +198,7 @@ gboolean __ofono_call_settings_is_busy(struct ofono_call_settings *cs);
 #include <ofono/gprs-context.h>
 #include <ofono/radio-settings.h>
 #include <ofono/audio-settings.h>
+#include <ofono/text-telephony.h>
 
 #include <ofono/voicecall.h>
 
diff --git a/src/text-telephony.c b/src/text-telephony.c
new file mode 100644
index 0000000..4640bd8
--- /dev/null
+++ b/src/text-telephony.c
@@ -0,0 +1,333 @@
+/*
+ *
+ *  oFono - Open Source Telephony
+ *
+ *  Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+ *  Copyright (C) 2010  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
+
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+
+#include <glib.h>
+#include <gdbus.h>
+
+#include "ofono.h"
+#include "common.h"
+
+static GSList *g_drivers = NULL;
+
+struct ofono_text_telephony {
+	DBusMessage *pending;
+	ofono_bool_t powered;
+	ofono_bool_t powered_pending;
+	const struct ofono_text_telephony_driver *driver;
+	void *driver_data;
+	struct ofono_atom *atom;
+};
+
+static DBusMessage *tt_get_properties_reply(DBusMessage *msg,
+						struct ofono_text_telephony *tt)
+{
+	DBusMessage *reply;
+	DBusMessageIter iter;
+	DBusMessageIter dict;
+	dbus_bool_t value;
+
+	reply = dbus_message_new_method_return(msg);
+	if (!reply)
+		return NULL;
+
+	dbus_message_iter_init_append(reply, &iter);
+	dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY,
+					OFONO_PROPERTIES_ARRAY_SIGNATURE,
+					&dict);
+
+	value = tt->powered;
+	ofono_dbus_dict_append(&dict, "Powered", DBUS_TYPE_BOOLEAN, &value);
+	dbus_message_iter_close_container(&iter, &dict);
+
+	return reply;
+}
+
+static void tt_set_powered(struct ofono_text_telephony *tt,
+					ofono_bool_t enable)
+{
+	DBusConnection *conn = ofono_dbus_get_connection();
+	const char *path = __ofono_atom_get_path(tt->atom);
+	dbus_bool_t value = enable;
+
+	if (tt->powered == enable)
+		return;
+
+	ofono_dbus_signal_property_changed(conn, path,
+						OFONO_TEXT_TELEPHONY_INTERFACE,
+						"Powered",
+						DBUS_TYPE_BOOLEAN, &value);
+	tt->powered = enable;
+}
+
+static void tt_set_powered_callback(const struct ofono_error *error,
+						void *data)
+{
+	struct ofono_text_telephony *tt = data;
+	DBusMessage *reply;
+
+	if (error->type != OFONO_ERROR_TYPE_NO_ERROR) {
+		DBG("Error setting powered property");
+
+		tt->powered_pending = tt->powered;
+
+		reply = __ofono_error_failed(tt->pending);
+		__ofono_dbus_pending_reply(&tt->pending, reply);
+
+		return;
+	}
+
+	reply = dbus_message_new_method_return(tt->pending);
+	__ofono_dbus_pending_reply(&tt->pending, reply);
+
+	tt_set_powered(tt, tt->powered_pending);
+}
+
+static void tt_send_properties_reply(struct ofono_text_telephony *tt)
+{
+	DBusMessage *reply;
+
+	reply = tt_get_properties_reply(tt->pending, tt);
+	__ofono_dbus_pending_reply(&tt->pending, reply);
+}
+
+static void tt_query_powered_callback(const struct ofono_error *error,
+						ofono_bool_t enable, void *data)
+{
+	struct ofono_text_telephony *tt = data;
+
+	if (error->type != OFONO_ERROR_TYPE_NO_ERROR) {
+		DBusMessage *reply;
+
+		ofono_debug("Error during powered query");
+
+		reply = __ofono_error_failed(tt->pending);
+		__ofono_dbus_pending_reply(&tt->pending, reply);
+
+		return;
+	}
+
+	tt_set_powered(tt, enable);
+	tt_send_properties_reply(tt);
+}
+
+static DBusMessage *tt_get_properties(DBusConnection *conn,
+						DBusMessage *msg, void *data)
+{
+	struct ofono_text_telephony *tt = data;
+
+	if (tt->pending)
+		return __ofono_error_busy(msg);
+
+	tt->pending = dbus_message_ref(msg);
+	tt->driver->query_tty(tt, tt_query_powered_callback, tt);
+
+	return NULL;
+}
+
+static DBusMessage *tt_set_property(DBusConnection *conn, DBusMessage *msg,
+					void *data)
+{
+	struct ofono_text_telephony *tt = data;
+	DBusMessageIter iter;
+	DBusMessageIter var;
+	const char *property;
+
+	if (tt->pending)
+		return __ofono_error_busy(msg);
+
+	if (!dbus_message_iter_init(msg, &iter))
+		return __ofono_error_invalid_args(msg);
+
+	if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
+		return __ofono_error_invalid_args(msg);
+
+	dbus_message_iter_get_basic(&iter, &property);
+	dbus_message_iter_next(&iter);
+
+	if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
+		return __ofono_error_invalid_args(msg);
+
+	dbus_message_iter_recurse(&iter, &var);
+
+	if (g_strcmp0(property, "Powered") == 0) {
+		dbus_bool_t value;
+		int target;
+
+		if (dbus_message_iter_get_arg_type(&var) != DBUS_TYPE_BOOLEAN)
+			return __ofono_error_invalid_args(msg);
+
+		dbus_message_iter_get_basic(&var, &value);
+		target = value;
+
+		if (tt->powered == target)
+			return dbus_message_new_method_return(msg);
+
+		tt->pending = dbus_message_ref(msg);
+		tt->powered_pending = target;
+
+		tt->driver->set_tty(tt, target,
+					tt_set_powered_callback, tt);
+		return NULL;
+	}
+
+	return __ofono_error_invalid_args(msg);
+}
+
+static GDBusMethodTable tt_methods[] = {
+	{ "GetProperties",  "",    "a{sv}",  tt_get_properties,
+						G_DBUS_METHOD_FLAG_ASYNC },
+	{ "SetProperty",    "sv",  "",       tt_set_property,
+						G_DBUS_METHOD_FLAG_ASYNC },
+	{ }
+};
+
+static GDBusSignalTable tt_signals[] = {
+	{ "PropertyChanged",	"sv" },
+	{ }
+};
+
+int ofono_text_telephony_driver_register(const struct ofono_text_telephony_driver *d)
+{
+	DBG("driver: %p, name: %s", d, d->name);
+
+	if (!d || !d->probe)
+		return -EINVAL;
+
+	g_drivers = g_slist_prepend(g_drivers, (void *)d);
+
+	return 0;
+}
+
+void ofono_text_telephony_driver_unregister(const struct ofono_text_telephony_driver *d)
+{
+	DBG("driver: %p, name: %s", d, d->name);
+
+	if (!d)
+		return;
+
+	g_drivers = g_slist_remove(g_drivers, (void *)d);
+}
+
+static void text_telephony_unregister(struct ofono_atom *atom)
+{
+	struct ofono_text_telephony *tt = __ofono_atom_get_data(atom);
+	const char *path = __ofono_atom_get_path(tt->atom);
+	DBusConnection *conn = ofono_dbus_get_connection();
+	struct ofono_modem *modem = __ofono_atom_get_modem(tt->atom);
+
+	ofono_modem_remove_interface(modem, OFONO_TEXT_TELEPHONY_INTERFACE);
+	g_dbus_unregister_interface(conn, path, OFONO_TEXT_TELEPHONY_INTERFACE);
+}
+
+static void text_telephony_remove(struct ofono_atom *atom)
+{
+	struct ofono_text_telephony *tt = __ofono_atom_get_data(atom);
+
+	DBG("atom: %p", atom);
+
+	if (!tt)
+		return;
+
+	if (tt->driver && tt->driver->remove)
+		tt->driver->remove(tt);
+
+	g_free(tt);
+}
+
+struct ofono_text_telephony *ofono_text_telephony_create(struct ofono_modem *modem,
+							unsigned int vendor,
+							const char *driver,
+							void *data)
+{
+	struct ofono_text_telephony *tt;
+	GSList *l;
+	if (!driver)
+		return NULL;
+
+	tt = g_try_new0(struct ofono_text_telephony, 1);
+	if (!tt)
+		return NULL;
+
+	tt->atom = __ofono_modem_add_atom(modem, OFONO_ATOM_TYPE_TEXT_TELEPHONY,
+						text_telephony_remove, tt);
+
+	tt->powered = -1;
+
+	for (l = g_drivers; l; l = l->next) {
+		const struct ofono_text_telephony_driver *drv = l->data;
+
+		if (g_strcmp0(drv->name, driver) != 0)
+			continue;
+
+		if (drv->probe(tt, vendor, data) < 0)
+			continue;
+
+		tt->driver = drv;
+		break;
+	}
+
+	return tt;
+}
+
+void ofono_text_telephony_register(struct ofono_text_telephony *tt)
+{
+	DBusConnection *conn = ofono_dbus_get_connection();
+	struct ofono_modem *modem = __ofono_atom_get_modem(tt->atom);
+	const char *path = __ofono_atom_get_path(tt->atom);
+
+	if (!g_dbus_register_interface(conn, path,
+					OFONO_TEXT_TELEPHONY_INTERFACE,
+						tt_methods, tt_signals,
+					NULL, tt, NULL)) {
+		ofono_error("Could not create %s interface",
+				OFONO_TEXT_TELEPHONY_INTERFACE);
+
+		return;
+	}
+
+	ofono_modem_add_interface(modem, OFONO_TEXT_TELEPHONY_INTERFACE);
+	__ofono_atom_register(tt->atom, text_telephony_unregister);
+}
+
+void ofono_text_telephony_remove(struct ofono_text_telephony *tt)
+{
+	__ofono_atom_free(tt->atom);
+}
+
+void ofono_text_telephony_set_data(struct ofono_text_telephony *tt,
+					void *data)
+{
+	tt->driver_data = data;
+}
+
+void *ofono_text_telephony_get_data(struct ofono_text_telephony *tt)
+{
+	return tt->driver_data;
+}
-- 
1.7.3.2