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hle: kernel: hle_ipc: Ensure SessionRequestHandler is valid.

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This commit is contained in:
bunnei 2021-06-07 21:55:37 -07:00
parent a493ab2678
commit 08d798b6fe
3 changed files with 26 additions and 5 deletions
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15
src/core/hle/kernel/hle_ipc.cpp
View file

@ -41,6 +41,21 @@ SessionRequestManager::SessionRequestManager(KernelCore& kernel_) : kernel{kerne
SessionRequestManager::~SessionRequestManager() = default; SessionRequestManager::~SessionRequestManager() = default;
bool SessionRequestManager::HasSessionRequestHandler(const HLERequestContext& context) const {
if (IsDomain() && context.HasDomainMessageHeader()) {
const auto& message_header = context.GetDomainMessageHeader();
const auto object_id = message_header.object_id;
if (object_id > DomainHandlerCount()) {
LOG_CRITICAL(IPC, "object_id {} is too big!", object_id);
return false;
}
return DomainHandler(object_id - 1) != nullptr;
} else {
return session_handler != nullptr;
}
}
void SessionRequestHandler::ClientConnected(KServerSession* session) { void SessionRequestHandler::ClientConnected(KServerSession* session) {
session->SetSessionHandler(shared_from_this()); session->SetSessionHandler(shared_from_this());
} }

3
src/core/hle/kernel/hle_ipc.h
View file

@ -156,6 +156,8 @@ public:
return session_handler->GetServiceThread(); return session_handler->GetServiceThread();
} }
bool HasSessionRequestHandler(const HLERequestContext& context) const;
private: private:
bool is_domain{}; bool is_domain{};
SessionRequestHandlerPtr session_handler; SessionRequestHandlerPtr session_handler;
@ -163,7 +165,6 @@ private:
private: private:
KernelCore& kernel; KernelCore& kernel;
std::weak_ptr<ServiceThread> service_thread;
}; };
/** /**

13
src/core/hle/kernel/k_server_session.cpp
View file

@ -119,11 +119,16 @@ ResultCode KServerSession::QueueSyncRequest(KThread* thread, Core::Memory::Memor
context->PopulateFromIncomingCommandBuffer(kernel.CurrentProcess()->GetHandleTable(), cmd_buf); context->PopulateFromIncomingCommandBuffer(kernel.CurrentProcess()->GetHandleTable(), cmd_buf);
if (auto strong_ptr = manager->GetServiceThread().lock()) { // Ensure we have a session request handler
strong_ptr->QueueSyncRequest(*parent, std::move(context)); if (manager->HasSessionRequestHandler(*context)) {
return ResultSuccess; if (auto strong_ptr = manager->GetServiceThread().lock()) {
strong_ptr->QueueSyncRequest(*parent, std::move(context));
return ResultSuccess;
} else {
ASSERT_MSG(false, "strong_ptr is nullptr!");
}
} else { } else {
ASSERT_MSG(false, "strong_ptr was nullptr!"); ASSERT_MSG(false, "handler is invalid!");
} }
return ResultSuccess; return ResultSuccess;