[acc, ldn] Implement CreateClientProcessMonitor and stub LoadIdTokenCache changes (#2810)

- IManagerForApplication/SystemService: from 19.0.0+ LoadIdTokenCache (3) is now LoadIdTokenCacheDeprecated (3)
- IManagerForApplication/SystemService: LoadIdTokenCache (4) stubbed
- Implement CreateClientProcessMonitor to ldn:s and ldn:u
- Create new client_process_monitor.cpp/.h files
- Change non-domain (C) functions into domain (D) functions to fix crashes

Thanks to SwitchBrew documentation, fixes 'Pokemon: Legends Z-A' LDN issues.

Co-authored-by: JPikachu <jpikachu.eden@gmail.com>
Co-authored-by: unknown <sahyno1996@gmail.com>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2810
Reviewed-by: Maufeat <sahyno1996@gmail.com>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Co-authored-by: JPikachu <jpikachu@eden-emu.dev>
Co-committed-by: JPikachu <jpikachu@eden-emu.dev>

src/core/hle/service/ldn/client_process_monitor.cpp

@@ -0,0 +1,27 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "core/hle/service/cmif_serialization.h"
+#include "core/hle/service/ldn/ldn_results.h"
+#include "core/hle/service/ldn/client_process_monitor.h"
+#include "core/hle/service/ipc_helpers.h"
+
+namespace Service::LDN {
+
+IClientProcessMonitor::IClientProcessMonitor(Core::System& system_)
+    : ServiceFramework{system_, "IClientProcessMonitor"} {
+    static const FunctionInfo functions[] = {
+        {0, D<&IClientProcessMonitor::RegisterClient>, "RegisterClient"},
+    };
+    RegisterHandlers(functions);
+}
+
+IClientProcessMonitor::~IClientProcessMonitor() = default;
+
+Result IClientProcessMonitor::RegisterClient() {
+    LOG_WARNING(Service_LDN, "(STUBBED) called");
+
+    R_SUCCEED();
+}
+
+} // namespace Service::LDN

src/core/hle/service/ldn/client_process_monitor.h

@@ -0,0 +1,25 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include "core/hle/service/cmif_types.h"
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::LDN {
+
+class IClientProcessMonitor final
+    : public ServiceFramework<IClientProcessMonitor> {
+public:
+    explicit IClientProcessMonitor(Core::System& system_);
+    ~IClientProcessMonitor() override;
+
+private:
+    Result RegisterClient();
+};
+
+} // namespace Service::LDN

src/core/hle/service/ldn/ldn.cpp

@@ -1,9 +1,13 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include "core/core.h"
 #include "core/hle/service/cmif_serialization.h"
 #include "core/hle/service/ldn/ldn.h"
+#include "core/hle/service/ldn/client_process_monitor.h"
 #include "core/hle/service/ldn/monitor_service.h"
 #include "core/hle/service/ldn/sf_monitor_service.h"
 #include "core/hle/service/ldn/sf_service.h"
@@ -40,7 +44,7 @@ public:
         // clang-format off
         static const FunctionInfo functions[] = {
             {0, C<&ISystemServiceCreator::CreateSystemLocalCommunicationService>, "CreateSystemLocalCommunicationService"},
-            {1, nullptr, "CreateClientProcessMonitor"} // 18.0.0+
+            {1, C<&ISystemServiceCreator::CreateClientProcessMonitor>, "CreateClientProcessMonitor"} // 18.0.0+
         };
         // clang-format on
 
@@ -55,6 +59,14 @@ private:
         *out_interface = std::make_shared<ISystemLocalCommunicationService>(system);
         R_SUCCEED();
     }
+
+    Result CreateClientProcessMonitor(
+        OutInterface<IClientProcessMonitor> out_interface) {
+        LOG_DEBUG(Service_LDN, "called");
+
+        *out_interface = std::make_shared<IClientProcessMonitor>(system);
+        R_SUCCEED();
+    }
 };
 
 class IUserServiceCreator final : public ServiceFramework<IUserServiceCreator> {
@@ -62,8 +74,8 @@ public:
     explicit IUserServiceCreator(Core::System& system_) : ServiceFramework{system_, "ldn:u"} {
         // clang-format off
         static const FunctionInfo functions[] = {
-            {0, C<&IUserServiceCreator::CreateUserLocalCommunicationService>, "CreateUserLocalCommunicationService"},
-            {1, nullptr, "CreateClientProcessMonitor"} // 18.0.0+
+            {0, D<&IUserServiceCreator::CreateUserLocalCommunicationService>, "CreateUserLocalCommunicationService"},
+            {1, D<&IUserServiceCreator::CreateClientProcessMonitor>, "CreateClientProcessMonitor"} // 18.0.0+
         };
         // clang-format on
 
@@ -78,6 +90,14 @@ private:
         *out_interface = std::make_shared<IUserLocalCommunicationService>(system);
         R_SUCCEED();
     }
+
+    Result CreateClientProcessMonitor(
+        OutInterface<IClientProcessMonitor> out_interface) {
+        LOG_DEBUG(Service_LDN, "called");
+
+        *out_interface = std::make_shared<IClientProcessMonitor>(system);
+        R_SUCCEED();
+    }
 };
 
 class ISfServiceCreator final : public ServiceFramework<ISfServiceCreator> {

src/core/hle/service/ldn/user_local_communication_service.cpp

@@ -27,35 +27,35 @@ IUserLocalCommunicationService::IUserLocalCommunicationService(Core::System& sys
       lan_discovery{} {
     // clang-format off
         static const FunctionInfo functions[] = {
-            {0, C<&IUserLocalCommunicationService::GetState>, "GetState"},
-            {1, C<&IUserLocalCommunicationService::GetNetworkInfo>, "GetNetworkInfo"},
-            {2, C<&IUserLocalCommunicationService::GetIpv4Address>, "GetIpv4Address"},
-            {3, C<&IUserLocalCommunicationService::GetDisconnectReason>, "GetDisconnectReason"},
-            {4, C<&IUserLocalCommunicationService::GetSecurityParameter>, "GetSecurityParameter"},
-            {5, C<&IUserLocalCommunicationService::GetNetworkConfig>, "GetNetworkConfig"},
-            {100, C<&IUserLocalCommunicationService::AttachStateChangeEvent>, "AttachStateChangeEvent"},
-            {101, C<&IUserLocalCommunicationService::GetNetworkInfoLatestUpdate>, "GetNetworkInfoLatestUpdate"},
-            {102, C<&IUserLocalCommunicationService::Scan>, "Scan"},
-            {103, C<&IUserLocalCommunicationService::ScanPrivate>, "ScanPrivate"},
-            {104, C<&IUserLocalCommunicationService::SetWirelessControllerRestriction>, "SetWirelessControllerRestriction"},
-            {200, C<&IUserLocalCommunicationService::OpenAccessPoint>, "OpenAccessPoint"},
-            {201, C<&IUserLocalCommunicationService::CloseAccessPoint>, "CloseAccessPoint"},
-            {202, C<&IUserLocalCommunicationService::CreateNetwork>, "CreateNetwork"},
-            {203, C<&IUserLocalCommunicationService::CreateNetworkPrivate>, "CreateNetworkPrivate"},
-            {204, C<&IUserLocalCommunicationService::DestroyNetwork>, "DestroyNetwork"},
+            {0, D<&IUserLocalCommunicationService::GetState>, "GetState"},
+            {1, D<&IUserLocalCommunicationService::GetNetworkInfo>, "GetNetworkInfo"},
+            {2, D<&IUserLocalCommunicationService::GetIpv4Address>, "GetIpv4Address"},
+            {3, D<&IUserLocalCommunicationService::GetDisconnectReason>, "GetDisconnectReason"},
+            {4, D<&IUserLocalCommunicationService::GetSecurityParameter>, "GetSecurityParameter"},
+            {5, D<&IUserLocalCommunicationService::GetNetworkConfig>, "GetNetworkConfig"},
+            {100, D<&IUserLocalCommunicationService::AttachStateChangeEvent>, "AttachStateChangeEvent"},
+            {101, D<&IUserLocalCommunicationService::GetNetworkInfoLatestUpdate>, "GetNetworkInfoLatestUpdate"},
+            {102, D<&IUserLocalCommunicationService::Scan>, "Scan"},
+            {103, D<&IUserLocalCommunicationService::ScanPrivate>, "ScanPrivate"},
+            {104, D<&IUserLocalCommunicationService::SetWirelessControllerRestriction>, "SetWirelessControllerRestriction"},
+            {200, D<&IUserLocalCommunicationService::OpenAccessPoint>, "OpenAccessPoint"},
+            {201, D<&IUserLocalCommunicationService::CloseAccessPoint>, "CloseAccessPoint"},
+            {202, D<&IUserLocalCommunicationService::CreateNetwork>, "CreateNetwork"},
+            {203, D<&IUserLocalCommunicationService::CreateNetworkPrivate>, "CreateNetworkPrivate"},
+            {204, D<&IUserLocalCommunicationService::DestroyNetwork>, "DestroyNetwork"},
             {205, nullptr, "Reject"},
-            {206, C<&IUserLocalCommunicationService::SetAdvertiseData>, "SetAdvertiseData"},
-            {207, C<&IUserLocalCommunicationService::SetStationAcceptPolicy>, "SetStationAcceptPolicy"},
-            {208, C<&IUserLocalCommunicationService::AddAcceptFilterEntry>, "AddAcceptFilterEntry"},
+            {206, D<&IUserLocalCommunicationService::SetAdvertiseData>, "SetAdvertiseData"},
+            {207, D<&IUserLocalCommunicationService::SetStationAcceptPolicy>, "SetStationAcceptPolicy"},
+            {208, D<&IUserLocalCommunicationService::AddAcceptFilterEntry>, "AddAcceptFilterEntry"},
             {209, nullptr, "ClearAcceptFilter"},
-            {300, C<&IUserLocalCommunicationService::OpenStation>, "OpenStation"},
-            {301, C<&IUserLocalCommunicationService::CloseStation>, "CloseStation"},
-            {302, C<&IUserLocalCommunicationService::Connect>, "Connect"},
+            {300, D<&IUserLocalCommunicationService::OpenStation>, "OpenStation"},
+            {301, D<&IUserLocalCommunicationService::CloseStation>, "CloseStation"},
+            {302, D<&IUserLocalCommunicationService::Connect>, "Connect"},
             {303, nullptr, "ConnectPrivate"},
-            {304, C<&IUserLocalCommunicationService::Disconnect>, "Disconnect"},
-            {400, C<&IUserLocalCommunicationService::Initialize>, "Initialize"},
-            {401, C<&IUserLocalCommunicationService::Finalize>, "Finalize"},
-            {402, C<&IUserLocalCommunicationService::Initialize2>, "Initialize2"},
+            {304, D<&IUserLocalCommunicationService::Disconnect>, "Disconnect"},
+            {400, D<&IUserLocalCommunicationService::Initialize>, "Initialize"},
+            {401, D<&IUserLocalCommunicationService::Finalize>, "Finalize"},
+            {402, D<&IUserLocalCommunicationService::Initialize2>, "Initialize2"},
         };
     // clang-format on