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Mark invalid IPC buffers as ASSERT_OR_EXECUTE_MSG
Previously if applications would send faulty buffers(example homebrew) it would lead to us returning uninitalized data. Switching from ASSERT_MSG to ASSERT_OR_EXECUTE_MSG allows us to have a fail safe to prevent crashes but also continue execution without introducing undefined behavior
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@ -282,17 +282,17 @@ ResultCode HLERequestContext::WriteToOutgoingCommandBuffer(Thread& thread) {
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}
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std::vector<u8> HLERequestContext::ReadBuffer(std::size_t buffer_index) const {
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std::vector<u8> buffer;
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std::vector<u8> buffer{};
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const bool is_buffer_a{BufferDescriptorA().size() > buffer_index &&
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BufferDescriptorA()[buffer_index].Size()};
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if (is_buffer_a) {
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ASSERT_MSG(BufferDescriptorA().size() > buffer_index,
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ASSERT_OR_EXECUTE_MSG(BufferDescriptorA().size() > buffer_index, { return buffer; },
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"BufferDescriptorA invalid buffer_index {}", buffer_index);
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buffer.resize(BufferDescriptorA()[buffer_index].Size());
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memory.ReadBlock(BufferDescriptorA()[buffer_index].Address(), buffer.data(), buffer.size());
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} else {
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ASSERT_MSG(BufferDescriptorX().size() > buffer_index,
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ASSERT_OR_EXECUTE_MSG(BufferDescriptorX().size() > buffer_index, { return buffer; },
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"BufferDescriptorX invalid buffer_index {}", buffer_index);
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buffer.resize(BufferDescriptorX()[buffer_index].Size());
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memory.ReadBlock(BufferDescriptorX()[buffer_index].Address(), buffer.data(), buffer.size());
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@ -318,16 +318,16 @@ std::size_t HLERequestContext::WriteBuffer(const void* buffer, std::size_t size,
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}
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if (is_buffer_b) {
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ASSERT_MSG(BufferDescriptorB().size() > buffer_index,
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"BufferDescriptorB invalid buffer_index {}", buffer_index);
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ASSERT_MSG(BufferDescriptorB()[buffer_index].Size() >= size,
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"BufferDescriptorB buffer_index {} is not large enough", buffer_index);
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ASSERT_OR_EXECUTE_MSG(BufferDescriptorB().size() > buffer_index &&
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BufferDescriptorB()[buffer_index].Size() >= size,
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{ return 0; }, "BufferDescriptorB is invalid, index={}, size={}",
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buffer_index, size);
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memory.WriteBlock(BufferDescriptorB()[buffer_index].Address(), buffer, size);
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} else {
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ASSERT_MSG(BufferDescriptorC().size() > buffer_index,
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"BufferDescriptorC invalid buffer_index {}", buffer_index);
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ASSERT_MSG(BufferDescriptorC()[buffer_index].Size() >= size,
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"BufferDescriptorC buffer_index {} is not large enough", buffer_index);
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ASSERT_OR_EXECUTE_MSG(BufferDescriptorC().size() > buffer_index &&
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BufferDescriptorC()[buffer_index].Size() >= size,
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{ return 0; }, "BufferDescriptorC is invalid, index={}, size={}",
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buffer_index, size);
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memory.WriteBlock(BufferDescriptorC()[buffer_index].Address(), buffer, size);
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}
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@ -338,16 +338,12 @@ std::size_t HLERequestContext::GetReadBufferSize(std::size_t buffer_index) const
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const bool is_buffer_a{BufferDescriptorA().size() > buffer_index &&
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BufferDescriptorA()[buffer_index].Size()};
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if (is_buffer_a) {
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ASSERT_MSG(BufferDescriptorA().size() > buffer_index,
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ASSERT_OR_EXECUTE_MSG(BufferDescriptorA().size() > buffer_index, { return 0; },
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"BufferDescriptorA invalid buffer_index {}", buffer_index);
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ASSERT_MSG(BufferDescriptorA()[buffer_index].Size() > 0,
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"BufferDescriptorA buffer_index {} is empty", buffer_index);
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return BufferDescriptorA()[buffer_index].Size();
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} else {
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ASSERT_MSG(BufferDescriptorX().size() > buffer_index,
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ASSERT_OR_EXECUTE_MSG(BufferDescriptorX().size() > buffer_index, { return 0; },
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"BufferDescriptorX invalid buffer_index {}", buffer_index);
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ASSERT_MSG(BufferDescriptorX()[buffer_index].Size() > 0,
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"BufferDescriptorX buffer_index {} is empty", buffer_index);
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return BufferDescriptorX()[buffer_index].Size();
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}
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}
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@ -356,14 +352,15 @@ std::size_t HLERequestContext::GetWriteBufferSize(std::size_t buffer_index) cons
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const bool is_buffer_b{BufferDescriptorB().size() > buffer_index &&
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BufferDescriptorB()[buffer_index].Size()};
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if (is_buffer_b) {
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ASSERT_MSG(BufferDescriptorB().size() > buffer_index,
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ASSERT_OR_EXECUTE_MSG(BufferDescriptorB().size() > buffer_index, { return 0; },
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"BufferDescriptorB invalid buffer_index {}", buffer_index);
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return BufferDescriptorB()[buffer_index].Size();
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} else {
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ASSERT_MSG(BufferDescriptorC().size() > buffer_index,
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ASSERT_OR_EXECUTE_MSG(BufferDescriptorC().size() > buffer_index, { return 0; },
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"BufferDescriptorC invalid buffer_index {}", buffer_index);
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return BufferDescriptorC()[buffer_index].Size();
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}
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return 0;
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}
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std::string HLERequestContext::Description() const {
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