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fix issue 145, signals are not filtered by sender

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This commit is contained in:
riuriuriu
2021-03-30 11:42:58 +02:00
committed by Urs Ritzmann
parent b9723850b8
commit d47e9d1834
4 changed files with 19 additions and 11 deletions
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15
src/Connection.cpp
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@ -289,7 +289,8 @@ void Connection::emitInterfacesRemovedSignal( const std::string& objectPath
SDBUS_THROW_ERROR_IF(r < 0, "Failed to emit InterfacesRemoved signal", -r);
}
SlotPtr Connection::registerSignalHandler( const std::string& objectPath
SlotPtr Connection::registerSignalHandler( const std::string& sender
, const std::string& objectPath
, const std::string& interfaceName
, const std::string& signalName
, sd_bus_message_handler_t callback
@ -297,7 +298,9 @@ SlotPtr Connection::registerSignalHandler( const std::string& objectPath
{
sd_bus_slot *slot{};
auto filter = composeSignalMatchFilter(objectPath, interfaceName, signalName);
// alternatively to our own composeSignalMatchFilter() implementation, we could also use sd_bus_match_signal() from
// https://www.freedesktop.org/software/systemd/man/sd_bus_add_match.html#
auto filter = composeSignalMatchFilter(sender, objectPath, interfaceName, signalName);
auto r = iface_->sd_bus_add_match(bus_.get(), &slot, filter.c_str(), callback, userData);
SDBUS_THROW_ERROR_IF(r < 0, "Failed to register signal handler", -r);
@ -417,13 +420,15 @@ bool Connection::waitForNextRequest()
return true;
}
std::string Connection::composeSignalMatchFilter( const std::string& objectPath
, const std::string& interfaceName
, const std::string& signalName )
std::string Connection::composeSignalMatchFilter(const std::string &sender,
const std::string &objectPath,
const std::string &interfaceName,
const std::string &signalName)
{
std::string filter;
filter += "type='signal',";
filter += "sender='" + sender + "',";
filter += "interface='" + interfaceName + "',";
filter += "member='" + signalName + "',";
filter += "path='" + objectPath + "'";

9
src/Connection.h
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@ -99,7 +99,8 @@ namespace sdbus::internal {
void emitInterfacesRemovedSignal( const std::string& objectPath
, const std::vector<std::string>& interfaces ) override;
SlotPtr registerSignalHandler( const std::string& objectPath
SlotPtr registerSignalHandler( const std::string& sender
, const std::string& objectPath
, const std::string& interfaceName
, const std::string& signalName
, sd_bus_message_handler_t callback
@ -115,9 +116,9 @@ namespace sdbus::internal {
BusPtr openBus(const std::function<int(sd_bus**)>& busFactory);
void finishHandshake(sd_bus* bus);
bool waitForNextRequest();
static std::string composeSignalMatchFilter( const std::string& objectPath
, const std::string& interfaceName
, const std::string& signalName );
static std::string composeSignalMatchFilter(const std::string &sender, const std::string &objectPath,
const std::string &interfaceName,
const std::string &signalName);
void notifyEventLoopToExit();
void clearExitNotification();
void joinWithEventLoop();

3
src/IConnection.h
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@ -82,7 +82,8 @@ namespace sdbus::internal {
[[nodiscard]] virtual SlotPtr addObjectManager(const std::string& objectPath, void* /*dummy*/ = nullptr) = 0;
[[nodiscard]] virtual SlotPtr registerSignalHandler( const std::string& objectPath
[[nodiscard]] virtual SlotPtr registerSignalHandler( const std::string& sender
, const std::string& objectPath
, const std::string& interfaceName
, const std::string& signalName
, sd_bus_message_handler_t callback

3
src/Proxy.cpp
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@ -183,7 +183,8 @@ void Proxy::registerSignalHandlers(sdbus::internal::IConnection& connection)
{
const auto& signalName = signalItem.first;
auto& slot = signalItem.second.slot_;
slot = connection.registerSignalHandler( objectPath_
slot = connection.registerSignalHandler( destination_
, objectPath_
, interfaceName
, signalName
, &Proxy::sdbus_signal_handler