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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;
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) {
session->SetSessionHandler(shared_from_this());
}

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

@ -156,6 +156,8 @@ public:
return session_handler->GetServiceThread();
}
bool HasSessionRequestHandler(const HLERequestContext& context) const;
private:
bool is_domain{};
SessionRequestHandlerPtr session_handler;
@ -163,7 +165,6 @@ private:
private:
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);
if (auto strong_ptr = manager->GetServiceThread().lock()) {
strong_ptr->QueueSyncRequest(*parent, std::move(context));
return ResultSuccess;
// Ensure we have a session request handler
if (manager->HasSessionRequestHandler(*context)) {
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 {
ASSERT_MSG(false, "strong_ptr was nullptr!");
ASSERT_MSG(false, "handler is invalid!");
}
return ResultSuccess;