From d8d925203ed90f3c1ca93145e9364cfb854d2789 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sl=C3=A1vek=20Banko?= <slavek.banko@axis.cz>
Date: Sun, 29 Sep 2013 01:39:40 +0200
Subject: [PATCH] Add SetHibernationMethod to tdehwlib-daemon

---
 .../dbus/tde_dbus_hardwarecontrol.c           | 46 ++++++++++++++-
 tdecore/tdehw/tderootsystemdevice.cpp         | 57 ++++++++++++++++++-
 2 files changed, 100 insertions(+), 3 deletions(-)

diff --git a/tdecore/tdehw/hwlibdaemons/dbus/tde_dbus_hardwarecontrol.c b/tdecore/tdehw/hwlibdaemons/dbus/tde_dbus_hardwarecontrol.c
index 6b3a5dc30..d00f06eb5 100644
--- a/tdecore/tdehw/hwlibdaemons/dbus/tde_dbus_hardwarecontrol.c
+++ b/tdecore/tdehw/hwlibdaemons/dbus/tde_dbus_hardwarecontrol.c
@@ -286,6 +286,37 @@ void reply_SetPower(DBusMessage* msg, DBusConnection* conn, char* state) {
 	reply_SetGivenPath(msg, conn, "/sys/power/state", state);
 }
 
+void reply_CanSetHibernationMethod(DBusMessage* msg, DBusConnection* conn) {
+
+	// check if path is writable
+	reply_CanSetGivenPath(msg, conn, "/sys/power/disk");
+}
+
+void reply_SetHibernationMethod(DBusMessage* msg, DBusConnection* conn) {
+	DBusMessageIter args;
+	const char* member = dbus_message_get_member(msg);
+	char* method = NULL;
+
+	// read the arguments
+	if (!dbus_message_iter_init(msg, &args)) {
+		fprintf(stderr, "[tde_dbus_hardwarecontrol] %s: no arguments supplied\n", member);
+	}
+	else if (DBUS_TYPE_STRING != dbus_message_iter_get_arg_type(&args)) {
+		fprintf(stderr, "[tde_dbus_hardwarecontrol] %s: argument not string\n", member);
+	}
+	else {
+		dbus_message_iter_get_basic(&args, &method);
+	}
+
+	// set hibernation method
+	if (method) {
+		reply_SetGivenPath(msg, conn, "/sys/power/disk", method);
+	}
+	else {
+		reply_Bool(msg, conn, false);
+	}
+}
+
 void signal_NameAcquired(DBusMessage* msg) {
 	DBusMessageIter args;
 	char *name = NULL;
@@ -301,7 +332,7 @@ void reply_Introspect(DBusMessage* msg, DBusConnection* conn) {
 	DBusMessage* reply;
 	DBusMessageIter args;
 	dbus_uint32_t serial = 0;
-	size_t size = 2048;
+	size_t size = 4096;
 	const char* member = dbus_message_get_member(msg);
 	const char *path = dbus_message_get_path(msg);
 	char *data = malloc(size);
@@ -374,6 +405,13 @@ void reply_Introspect(DBusMessage* msg, DBusConnection* conn) {
 			"    <method name=\"Hibernate\">\n"
 			"      <arg name=\"value\" direction=\"out\" type=\"b\" />\n"
 			"    </method>\n"
+			"    <method name=\"CanSetHibernationMethod\">\n"
+			"      <arg name=\"value\" direction=\"out\" type=\"b\" />\n"
+			"    </method>\n"
+			"    <method name=\"SetHibernationMethod\">\n"
+			"      <arg name=\"method\" direction=\"in\" type=\"s\" />\n"
+			"      <arg name=\"value\" direction=\"out\" type=\"b\" />\n"
+			"    </method>\n"
 			"  </interface>\n",
 			size-strlen(data));
 	}
@@ -511,6 +549,12 @@ void listen() {
 		else if (dbus_message_is_method_call(msg, "org.trinitydesktop.hardwarecontrol.Power", "Hibernate")) {
 			reply_SetPower(msg, conn, "disk");
 		}
+		else if (dbus_message_is_method_call(msg, "org.trinitydesktop.hardwarecontrol.Power", "CanSetHibernationMethod")) {
+			reply_CanSetHibernationMethod(msg, conn);
+		}
+		else if (dbus_message_is_method_call(msg, "org.trinitydesktop.hardwarecontrol.Power", "SetHibernationMethod")) {
+			reply_SetHibernationMethod(msg, conn);
+		}
 		else if (dbus_message_is_signal(msg, "org.freedesktop.DBus", "NameAcquired")) {
 			signal_NameAcquired(msg);
 		}
diff --git a/tdecore/tdehw/tderootsystemdevice.cpp b/tdecore/tdehw/tderootsystemdevice.cpp
index 488c60e2b..b62f07ddd 100644
--- a/tdecore/tdehw/tderootsystemdevice.cpp
+++ b/tdecore/tdehw/tderootsystemdevice.cpp
@@ -103,9 +103,26 @@ bool TDERootSystemDevice::canSetHibernationMethod() {
 	if (rval == 0) {
 		return TRUE;
 	}
-	else {
-		return FALSE;
+
+#ifdef WITH_TDEHWLIB_DAEMONS
+	{
+		TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
+		if (dbusConn.isConnected()) {
+			// can set hibernation method?
+			TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
+						"org.trinitydesktop.hardwarecontrol",
+						"/org/trinitydesktop/hardwarecontrol",
+						"org.trinitydesktop.hardwarecontrol.Power",
+						"CanSetHibernationMethod");
+			TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
+			if (reply.type() == TQT_DBusMessage::ReplyMessage && reply.count() == 1) {
+				return reply[0].toBool();
+			}
+		}
 	}
+#endif // WITH_TDEHWLIB_DAEMONS
+
+	return FALSE;
 }
 
 bool TDERootSystemDevice::canStandby() {
@@ -495,7 +512,43 @@ void TDERootSystemDevice::setHibernationMethod(TDESystemHibernationMethod::TDESy
 		TQTextStream stream( &file );
 		stream << hibernationCommand;
 		file.close();
+		return;
 	}
+
+#ifdef WITH_TDEHWLIB_DAEMONS
+	{
+		TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
+		if (dbusConn.isConnected()) {
+			TQT_DBusProxy hardwareControl("org.trinitydesktop.hardwarecontrol", "/org/trinitydesktop/hardwarecontrol", "org.trinitydesktop.hardwarecontrol.Power", dbusConn);
+			if (hardwareControl.canSend()) {
+				// set hibernation method
+				TQValueList<TQT_DBusData> params;
+				TQString hibernationCommand;
+				if (hm == TDESystemHibernationMethod::Platform) {
+					hibernationCommand = "platform";
+				}
+				if (hm == TDESystemHibernationMethod::Shutdown) {
+					hibernationCommand = "shutdown";
+				}
+				if (hm == TDESystemHibernationMethod::Reboot) {
+					hibernationCommand = "reboot";
+				}
+				if (hm == TDESystemHibernationMethod::TestProc) {
+					hibernationCommand = "testproc";
+				}
+				if (hm == TDESystemHibernationMethod::Test) {
+					hibernationCommand = "test";
+				}
+				params << TQT_DBusData::fromString(hibernationCommand);
+				TQT_DBusMessage reply = hardwareControl.sendWithReply("SetHibernationMethod", params);
+				if (reply.type() == TQT_DBusMessage::ReplyMessage) {
+					return;
+				}
+			}
+		}
+	}
+#endif // WITH_TDEHWLIB_DAEMONS
+
 }
 
 bool TDERootSystemDevice::setPowerState(TDESystemPowerState::TDESystemPowerState ps) {