Function FindRelocatedFooter

Sources/Shared/IO/PakFile.cpp:67–242

	}

	static std::int64_t FindRelocatedFooter(std::unique_ptr<Death::IO::Stream>& s)
	{
		s->Seek(0, SeekOrigin::Begin);

		std::uint32_t magic = s->ReadValueAsLE<std::uint32_t>();

		// Check for PE signature (MZ header)
		if ((magic & 0xFFFF) == 0x5A4D) { // "MZ"
			s->Seek(0x3C, SeekOrigin::Begin);
			std::uint32_t peHeaderOffset = s->ReadValueAsLE<std::uint32_t>();

			s->Seek(peHeaderOffset, SeekOrigin::Begin);
			std::uint32_t peSignature = s->ReadValueAsLE<std::uint32_t>();
			if (peSignature != 0x00004550) { // "PE\0\0"
				return -1;
			}

			// Read COFF header
			s->Seek(peHeaderOffset + 6, SeekOrigin::Begin);
			std::uint16_t numberOfSections = s->ReadValueAsLE<std::uint16_t>();
			s->Seek(12, SeekOrigin::Current); // Skip timestamp, symbol table pointer, number of symbols
			std::uint16_t sizeOfOptionalHeader = s->ReadValueAsLE<std::uint16_t>();
			s->Seek(2, SeekOrigin::Current); // Skip characteristics

			// Skip optional header to get to section table
			std::int64_t sectionTablePos = s->GetPosition() + sizeOfOptionalHeader;

			// Search for "pak" section
			for (std::uint16_t i = 0; i < numberOfSections; i++) {
				s->Seek(sectionTablePos + i * 40, SeekOrigin::Begin);

				char sectionName[9];
				s->Read(sectionName, 8);
				sectionName[8] = '\0';

				if (std::memcmp(sectionName, "pak", 4) == 0) {
					// Found pak section, read its file offset and size
					s->Seek(8, SeekOrigin::Current); // Skip VirtualSize and VirtualAddress
					std::uint32_t sizeOfRawData = s->ReadValueAsLE<std::uint32_t>();
					std::uint32_t pointerToRawData = s->ReadValueAsLE<std::uint32_t>();

					if (sizeOfRawData >= FooterSize && pointerToRawData > 0) {
						// Calculate footer position (at the end of pak section)
						std::int64_t footerPosition = std::int64_t(pointerToRawData) + std::int64_t(sizeOfRawData) - FooterSize;
						
						s->Seek(footerPosition, SeekOrigin::Begin);
						std::uint8_t signature[sizeof(Signature)];
						s->Read(signature, sizeof(signature));

						if (std::memcmp(signature, Signature, sizeof(Signature)) == 0) {
							return footerPosition;
						}
					}
					break;
				}
			}

			return -1;