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39 lines
1.7 KiB
C++
39 lines
1.7 KiB
C++
#pragma once
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#include <cstddef>
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#include <cstdint>
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#include <limits>
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#include <span>
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#include <string>
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namespace dingosdk {
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// Version 1: Studio's unsigned TOCs. Version 2 also accepts edited signed
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// InitFS/package envelopes through the native verifier's signature check.
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inline constexpr std::uint32_t native_patch_support_version = 2;
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inline constexpr std::size_t native_patch_envelope_size = 0x22c;
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// Recognizes the supported native container layout, not its authenticity.
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// Obfuscated, incomplete and unknown envelopes retain the native failure path.
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constexpr bool is_native_data_envelope(std::span<const std::uint8_t> header,
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std::uint64_t length, std::uintptr_t address) noexcept {
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if (!address || header.size() < native_patch_envelope_size ||
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length <= native_patch_envelope_size ||
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length > std::numeric_limits<std::uintptr_t>::max() - address) return false;
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return header[0] == 0x00 && header[1] == 0xd1 && header[2] == 0xce && header[3] == 0x01;
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}
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// The exact zero-signature envelope emitted by Studio's native TOC writer.
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constexpr bool is_unsigned_native_patch_envelope(std::span<const std::uint8_t> header,
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std::uint64_t length, std::uintptr_t address) noexcept {
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if (!is_native_data_envelope(header, length, address)) return false;
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for (std::size_t i = 4; i < native_patch_envelope_size; ++i)
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if (header[i] != 0) return false;
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return true;
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}
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// Call once after Detours hook service initialization, while the launcher still holds entry.
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// Signed envelopes use the original verifier, allowing STATUS_INVALID_SIGNATURE
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// only for its exact signature call and the current recognized data envelope.
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bool start_native_patch_support(std::uintptr_t base, std::string& error);
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} // namespace dingosdk
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