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// Copyright 2021-2022 The Mumble Developers. All rights reserved.
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file at the root of the
// Mumble source tree or at <https://www.mumble.info/LICENSE>.
#ifndef MUMBLE_MUMBLE_POSITIONAL_AUDIO_WIN32_INTERNALS_H_
#define MUMBLE_MUMBLE_POSITIONAL_AUDIO_WIN32_INTERNALS_H_
// These structures represent the header(s) of an NT image.
//
// There are two ways to read the image:
// - Loading the executable/library in memory and then reading the content at
// the beginning.
// - Reading the process' memory at the beginning (base address).
// In the case of a loaded library, its header(s) can be found at its load
// (base) address.
//
// By reading the header(s) we can gather useful info regarding the process,
// such as the architecture and, in the case of a library, the address of an
// exported symbol.
struct ImageDosHeader {
uint8_t magic[2]; // M Z
uint16_t bytesOnLastPage;
uint16_t pages;
uint16_t relocations;
uint16_t headerSizeInParagraphs;
uint16_t minimumExtraParagraphs;
uint16_t maximumExtraParagraphs;
uint16_t initialSsValue;
uint16_t initialSpValue;
uint16_t checksum;
uint16_t initialIpValue;
uint16_t initialCsValue;
uint16_t addressOfRelocationTable;
uint16_t overlayNumber;
uint16_t reserved[4];
uint16_t oemIdentifier;
uint16_t oemInfo;
uint16_t reserved2[10];
int32_t addressOfNtHeader;
};
struct ImageFileHeader {
uint16_t machine;
uint16_t numberOfSections;
uint32_t timeDateStamp;
uint32_t pointerToSymbolTable;
uint32_t numberOfSymbols;
uint16_t sizeOfOptionalHeader;
uint16_t characteristics;
};
struct ImageNtHeadersNoOptional {
uint8_t signature[4]; // P E \0 \0
ImageFileHeader fileHeader;
};
struct ImageDataDirectory {
uint32_t virtualAddress;
uint32_t size;
};
struct ImageExportDirectory {
uint32_t characteristics;
uint32_t timeDateStamp;
uint16_t majorVersion;
uint16_t minorVersion;
uint32_t name;
uint32_t base;
uint32_t numberOfFunctions;
uint32_t numberOfNames;
uint32_t addressOfFunctions;
uint32_t addressOfNames;
uint32_t addressOfNameOrdinals;
};
struct ImageOptionalHeader32 {
uint16_t magic; // 0x10b
uint8_t majorLinkerVersion;
uint8_t minorLinkerVersion;
uint32_t sizeOfCode;
uint32_t sizeOfInitializedData;
uint32_t sizeOfUninitializedData;
uint32_t addressOfEntryPoint;
uint32_t baseOfCode;
uint32_t baseOfData;
uint32_t imageBase;
uint32_t sectionAlignment;
uint32_t fileAlignment;
uint16_t majorOperatingSystemVersion;
uint16_t minorOperatingSystemVersion;
uint16_t majorImageVersion;
uint16_t minorImageVersion;
uint16_t majorSubsystemVersion;
uint16_t minorSubsystemVersion;
uint32_t win32VersionValue;
uint32_t sizeOfImage;
uint32_t sizeOfHeaders;
uint32_t checksum;
uint16_t subsystem;
uint16_t dllCharacteristics;
uint32_t sizeOfStackReserve;
uint32_t sizeOfStackCommit;
uint32_t sizeOfHeapReserve;
uint32_t sizeOfHeapCommit;
uint32_t loaderFlags;
uint32_t numberOfRvaAndSizes;
ImageDataDirectory dataDirectory[16];
};
struct ImageOptionalHeader64 {
uint16_t magic; // 0x20b
uint8_t majorLinkerVersion;
uint8_t minorLinkerVersion;
uint32_t sizeOfCode;
uint32_t sizeOfInitializedData;
uint32_t sizeOfUninitializedData;
uint32_t addressOfEntryPoint;
uint32_t baseOfCode;
uint64_t imageBase;
uint32_t sectionAlignment;
uint32_t fileAlignment;
uint16_t majorOperatingSystemVersion;
uint16_t minorOperatingSystemVersion;
uint16_t majorImageVersion;
uint16_t minorImageVersion;
uint16_t majorSubsystemVersion;
uint16_t minorSubsystemVersion;
uint32_t win32VersionValue;
uint32_t sizeOfImage;
uint32_t sizeOfHeaders;
uint32_t checksum;
uint16_t subsystem;
uint16_t dllCharacteristics;
uint64_t sizeOfStackReserve;
uint64_t sizeOfStackCommit;
uint64_t sizeOfHeapReserve;
uint64_t sizeOfHeapCommit;
uint32_t loaderFlags;
uint32_t numberOfRvaAndSizes;
ImageDataDirectory dataDirectory[16];
};
struct ImageNtHeaders32 {
uint8_t signature[4]; // P E \0 \0
ImageFileHeader fileHeader;
ImageOptionalHeader32 optionalHeader;
};
struct ImageNtHeaders64 {
uint8_t signature[4]; // P E \0 \0
ImageFileHeader fileHeader;
ImageOptionalHeader64 optionalHeader;
};
#endif
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