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hle_ipc: Add error checking to read/write buffer access.

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This commit is contained in:
bunnei 2020-02-05 22:09:16 -05:00
parent a0b4be4262
commit 9751ccc5e0
1 changed files with 42 additions and 8 deletions
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50
src/core/hle/kernel/hle_ipc.cpp
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@ -284,13 +284,18 @@ ResultCode HLERequestContext::WriteToOutgoingCommandBuffer(Thread& thread) {
std::vector<u8> HLERequestContext::ReadBuffer(int buffer_index) const {
std::vector<u8> buffer;
const bool is_buffer_a{BufferDescriptorA().size() && BufferDescriptorA()[buffer_index].Size()};
const bool is_buffer_a{BufferDescriptorA().size() > buffer_index &&
BufferDescriptorA()[buffer_index].Size()};
auto& memory = Core::System::GetInstance().Memory();
if (is_buffer_a) {
ASSERT_MSG(BufferDescriptorA().size() > buffer_index,
"BufferDescriptorA invalid buffer_index {}", buffer_index);
buffer.resize(BufferDescriptorA()[buffer_index].Size());
memory.ReadBlock(BufferDescriptorA()[buffer_index].Address(), buffer.data(), buffer.size());
} else {
ASSERT_MSG(BufferDescriptorX().size() > buffer_index,
"BufferDescriptorX invalid buffer_index {}", buffer_index);
buffer.resize(BufferDescriptorX()[buffer_index].Size());
memory.ReadBlock(BufferDescriptorX()[buffer_index].Address(), buffer.data(), buffer.size());
}
@ -305,7 +310,8 @@ std::size_t HLERequestContext::WriteBuffer(const void* buffer, std::size_t size,
return 0;
}
const bool is_buffer_b{BufferDescriptorB().size() && BufferDescriptorB()[buffer_index].Size()};
const bool is_buffer_b{BufferDescriptorB().size() > buffer_index &&
BufferDescriptorB()[buffer_index].Size()};
const std::size_t buffer_size{GetWriteBufferSize(buffer_index)};
if (size > buffer_size) {
LOG_CRITICAL(Core, "size ({:016X}) is greater than buffer_size ({:016X})", size,
@ -315,8 +321,16 @@ std::size_t HLERequestContext::WriteBuffer(const void* buffer, std::size_t size,
auto& memory = Core::System::GetInstance().Memory();
if (is_buffer_b) {
ASSERT_MSG(BufferDescriptorB().size() > buffer_index,
"BufferDescriptorB invalid buffer_index {}", buffer_index);
ASSERT_MSG(BufferDescriptorB()[buffer_index].Size() >= size,
"BufferDescriptorB buffer_index {} is not large enough", buffer_index);
memory.WriteBlock(BufferDescriptorB()[buffer_index].Address(), buffer, size);
} else {
ASSERT_MSG(BufferDescriptorC().size() > buffer_index,
"BufferDescriptorC invalid buffer_index {}", buffer_index);
ASSERT_MSG(BufferDescriptorC()[buffer_index].Size() >= size,
"BufferDescriptorC buffer_index {} is not large enough", buffer_index);
memory.WriteBlock(BufferDescriptorC()[buffer_index].Address(), buffer, size);
}
@ -324,15 +338,35 @@ std::size_t HLERequestContext::WriteBuffer(const void* buffer, std::size_t size,
}
std::size_t HLERequestContext::GetReadBufferSize(int buffer_index) const {
const bool is_buffer_a{BufferDescriptorA().size() && BufferDescriptorA()[buffer_index].Size()};
return is_buffer_a ? BufferDescriptorA()[buffer_index].Size()
: BufferDescriptorX()[buffer_index].Size();
const bool is_buffer_a{BufferDescriptorA().size() > buffer_index &&
BufferDescriptorA()[buffer_index].Size()};
if (is_buffer_a) {
ASSERT_MSG(BufferDescriptorA().size() > buffer_index,
"BufferDescriptorA invalid buffer_index {}", buffer_index);
ASSERT_MSG(BufferDescriptorA()[buffer_index].Size() > 0,
"BufferDescriptorA buffer_index {} is empty", buffer_index);
return BufferDescriptorA()[buffer_index].Size();
} else {
ASSERT_MSG(BufferDescriptorX().size() > buffer_index,
"BufferDescriptorX invalid buffer_index {}", buffer_index);
ASSERT_MSG(BufferDescriptorX()[buffer_index].Size() > 0,
"BufferDescriptorX buffer_index {} is empty", buffer_index);
return BufferDescriptorX()[buffer_index].Size();
}
}
std::size_t HLERequestContext::GetWriteBufferSize(int buffer_index) const {
const bool is_buffer_b{BufferDescriptorB().size() && BufferDescriptorB()[buffer_index].Size()};
return is_buffer_b ? BufferDescriptorB()[buffer_index].Size()
: BufferDescriptorC()[buffer_index].Size();
const bool is_buffer_b{BufferDescriptorB().size() > buffer_index &&
BufferDescriptorB()[buffer_index].Size()};
if (is_buffer_b) {
ASSERT_MSG(BufferDescriptorB().size() > buffer_index,
"BufferDescriptorB invalid buffer_index {}", buffer_index);
return BufferDescriptorB()[buffer_index].Size();
} else {
ASSERT_MSG(BufferDescriptorC().size() > buffer_index,
"BufferDescriptorC invalid buffer_index {}", buffer_index);
return BufferDescriptorC()[buffer_index].Size();
}
}
std::string HLERequestContext::Description() const {