mirror of
https://github.com/mtrojnar/osslsigncode.git
synced 2025-04-05 09:08:04 -05:00
238 lines
7.6 KiB
C
238 lines
7.6 KiB
C
/*
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* MSI file support library
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*
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* Copyright (C) 2021 Michał Trojnara <Michal.Trojnara@stunnel.org>
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* Author: Małgorzata Olszówka <Malgorzata.Olszowka@stunnel.org>
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*
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* Reference specifications:
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* http://en.wikipedia.org/wiki/Compound_File_Binary_Format
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* https://msdn.microsoft.com/en-us/library/dd942138.aspx
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* https://github.com/microsoft/compoundfilereader
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*/
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#include <stdint.h>
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#include <openssl/safestack.h>
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#include <openssl/bio.h>
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#include <openssl/crypto.h>
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#include <openssl/evp.h>
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#define MAXREGSECT 0xfffffffa /* maximum regular sector number */
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#define DIFSECT 0xfffffffc /* specifies a DIFAT sector in the FAT */
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#define FATSECT 0xfffffffd /* specifies a FAT sector in the FAT */
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#define ENDOFCHAIN 0xfffffffe /* end of a linked chain of sectors */
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#define NOSTREAM 0xffffffff /* terminator or empty pointer */
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#define FREESECT 0xffffffff /* empty unallocated free sectors */
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#define DIR_UNKNOWN 0
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#define DIR_STORAGE 1
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#define DIR_STREAM 2
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#define DIR_ROOT 5
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#define RED_COLOR 0
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#define BLACK_COLOR 1
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#define DIFAT_IN_HEADER 109
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#define MINI_STREAM_CUTOFF_SIZE 0x00001000 /* 4096 bytes */
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#define HEADER_SIZE 0x200 /* 512 bytes, independent of sector size */
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#define MAX_SECTOR_SIZE 0x1000 /* 4096 bytes */
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#define HEADER_SIGNATURE 0x00 /* 0xD0, 0xCF, 0x11, 0xE0, 0xA1, 0xB1, 0x1A, 0xE1 */
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#define HEADER_CLSID 0x08 /* reserved and unused */
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#define HEADER_MINOR_VER 0x18 /* SHOULD be set to 0x003E */
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#define HEADER_MAJOR_VER 0x1a /* MUST be set to either 0x0003 (version 3) or 0x0004 (version 4) */
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#define HEADER_BYTE_ORDER 0x1c /* 0xfe 0xff == Intel Little Endian */
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#define HEADER_SECTOR_SHIFT 0x1e /* MUST be set to 0x0009, or 0x000c */
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#define HEADER_MINI_SECTOR_SHIFT 0x20 /* MUST be set to 0x0006 */
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#define RESERVED 0x22 /* reserved and unused */
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#define HEADER_DIR_SECTORS_NUM 0x28
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#define HEADER_FAT_SECTORS_NUM 0x2c
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#define HEADER_DIR_SECTOR_LOC 0x30
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#define HEADER_TRANSACTION 0x34
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#define HEADER_MINI_STREAM_CUTOFF 0x38 /* 4096 bytes */
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#define HEADER_MINI_FAT_SECTOR_LOC 0x3c
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#define HEADER_MINI_FAT_SECTORS_NUM 0x40
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#define HEADER_DIFAT_SECTOR_LOC 0x44
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#define HEADER_DIFAT_SECTORS_NUM 0x48
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#define HEADER_DIFAT 0x4c
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#define DIRENT_SIZE 0x80 /* 128 bytes */
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#define DIRENT_MAX_NAME_SIZE 0x40 /* 64 bytes */
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#define DIRENT_NAME 0x00
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#define DIRENT_NAME_LEN 0x40 /* length in bytes incl 0 terminator */
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#define DIRENT_TYPE 0x42
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#define DIRENT_COLOUR 0x43
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#define DIRENT_LEFT_SIBLING_ID 0x44
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#define DIRENT_RIGHT_SIBLING_ID 0x48
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#define DIRENT_CHILD_ID 0x4c
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#define DIRENT_CLSID 0x50
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#define DIRENT_STATE_BITS 0x60
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#define DIRENT_CREATE_TIME 0x64
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#define DIRENT_MODIFY_TIME 0x6c
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#define DIRENT_START_SECTOR_LOC 0x74
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#define DIRENT_FILE_SIZE 0x78
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#define GET_UINT8_LE(p) ((u_char*)(p))[0]
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#define GET_UINT16_LE(p) (uint16_t)(((u_char*)(p))[0] | (((u_char*)(p))[1]<<8))
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#define GET_UINT32_LE(p) (uint32_t)(((u_char*)(p))[0] | (((u_char*)(p))[1]<<8) | \
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(((u_char*)(p))[2]<<16) | (((u_char*)(p))[3]<<24))
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#define PUT_UINT8_LE(i,p) \
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((u_char*)(p))[0] = (i) & 0xff;
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#define PUT_UINT16_LE(i,p) \
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((u_char*)(p))[0] = (i) & 0xff; \
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((u_char*)(p))[1] = ((i)>>8) & 0xff
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#define PUT_UINT32_LE(i,p) \
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((u_char*)(p))[0] = (i) & 0xff; \
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((u_char*)(p))[1] = ((i)>>8) & 0xff; \
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((u_char*)(p))[2] = ((i)>>16) & 0xff; \
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((u_char*)(p))[3] = ((i)>>24) & 0xff
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#ifndef FALSE
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#define FALSE 0
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#endif
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#ifndef TRUE
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#define TRUE 1
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#endif
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#define SIZE_64K 65536 /* 2^16 */
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#define SIZE_16M 16777216 /* 2^24 */
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typedef unsigned char u_char;
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typedef struct {
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u_char signature[8]; /* 0xd0, 0xcf, 0x11, 0xe0, 0xa1, 0xb1, 0x1a, 0xe1 */
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u_char unused_clsid[16]; /* reserved and unused */
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uint16_t minorVersion;
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uint16_t majorVersion;
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uint16_t byteOrder;
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uint16_t sectorShift; /* power of 2 */
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uint16_t miniSectorShift; /* power of 2 */
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u_char reserved[6]; /* reserved and unused */
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uint32_t numDirectorySector;
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uint32_t numFATSector;
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uint32_t firstDirectorySectorLocation;
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uint32_t transactionSignatureNumber; /* reserved */
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uint32_t miniStreamCutoffSize;
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uint32_t firstMiniFATSectorLocation;
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uint32_t numMiniFATSector;
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uint32_t firstDIFATSectorLocation;
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uint32_t numDIFATSector;
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uint32_t headerDIFAT[DIFAT_IN_HEADER];
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} MSI_FILE_HDR;
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typedef struct {
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u_char name[DIRENT_MAX_NAME_SIZE];
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uint16_t nameLen;
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uint8_t type;
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uint8_t colorFlag;
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uint32_t leftSiblingID;
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uint32_t rightSiblingID;
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uint32_t childID;
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u_char clsid[16];
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u_char stateBits[4];
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u_char creationTime[8];
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u_char modifiedTime[8];
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uint32_t startSectorLocation;
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u_char size[8];
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} MSI_ENTRY;
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typedef struct msi_dirent_struct {
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u_char name[DIRENT_MAX_NAME_SIZE];
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uint16_t nameLen;
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uint8_t type;
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MSI_ENTRY *entry;
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STACK_OF(MSI_DIRENT) *children;
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struct msi_dirent_struct *next; /* for cycle detection */
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} MSI_DIRENT;
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DEFINE_STACK_OF(MSI_DIRENT)
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typedef struct {
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const u_char *m_buffer;
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uint32_t m_bufferLen;
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MSI_FILE_HDR *m_hdr;
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uint32_t m_sectorSize;
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uint32_t m_minisectorSize;
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uint32_t m_miniStreamStartSector;
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} MSI_FILE;
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typedef struct {
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char *header;
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char *ministream;
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char *minifat;
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char *fat;
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uint32_t dirtreeLen;
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uint32_t miniStreamLen;
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uint32_t minifatLen;
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uint32_t fatLen;
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int ministreamsMemallocCount;
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int minifatMemallocCount;
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int fatMemallocCount;
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int dirtreeSectorsCount;
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int minifatSectorsCount;
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int fatSectorsCount;
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int miniSectorNum;
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int sectorNum;
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uint32_t sectorSize;
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} MSI_OUT;
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static const u_char msi_magic[] = {
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0xd0, 0xcf, 0x11, 0xe0, 0xa1, 0xb1, 0x1a, 0xe1
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};
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static const u_char digital_signature[] = {
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0x05, 0x00, 0x44, 0x00, 0x69, 0x00, 0x67, 0x00,
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0x69, 0x00, 0x74, 0x00, 0x61, 0x00, 0x6C, 0x00,
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0x53, 0x00, 0x69, 0x00, 0x67, 0x00, 0x6E, 0x00,
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0x61, 0x00, 0x74, 0x00, 0x75, 0x00, 0x72, 0x00,
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0x65, 0x00, 0x00, 0x00
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};
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static const u_char digital_signature_ex[] = {
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0x05, 0x00, 0x4D, 0x00, 0x73, 0x00, 0x69, 0x00,
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0x44, 0x00, 0x69, 0x00, 0x67, 0x00, 0x69, 0x00,
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0x74, 0x00, 0x61, 0x00, 0x6C, 0x00, 0x53, 0x00,
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0x69, 0x00, 0x67, 0x00, 0x6E, 0x00, 0x61, 0x00,
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0x74, 0x00, 0x75, 0x00, 0x72, 0x00, 0x65, 0x00,
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0x45, 0x00, 0x78, 0x00, 0x00, 0x00
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};
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static const u_char msi_root_entry[] = {
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0x52, 0x00, 0x6F, 0x00, 0x6F, 0x00, 0x74, 0x00,
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0x20, 0x00, 0x45, 0x00, 0x6E, 0x00, 0x74, 0x00,
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0x72, 0x00, 0x79, 0x00, 0x00, 0x00
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};
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static const u_char msi_zeroes[] = {
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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int msi_file_read(MSI_FILE *msi, MSI_ENTRY *entry, uint32_t offset, char *buffer, uint32_t len);
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MSI_FILE *msi_file_new(char *buffer, uint32_t len);
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void msi_file_free(MSI_FILE *msi);
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MSI_ENTRY *msi_root_entry_get(MSI_FILE *msi);
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int msi_dirent_new(MSI_FILE *msi, MSI_ENTRY *entry, MSI_DIRENT *parent, MSI_DIRENT **ret);
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MSI_ENTRY *msi_signatures_get(MSI_DIRENT *dirent, MSI_ENTRY **dse);
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void msi_dirent_free(MSI_DIRENT *dirent);
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int msi_prehash_dir(MSI_DIRENT *dirent, BIO *hash, int is_root);
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int msi_hash_dir(MSI_FILE *msi, MSI_DIRENT *dirent, BIO *hash, int is_root);
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int msi_calc_digest(char *indata, const EVP_MD *md, u_char *mdbuf, uint32_t fileend);
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int msi_dirent_delete(MSI_DIRENT *dirent, const u_char *name, uint16_t nameLen);
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int msi_file_write(MSI_FILE *msi, MSI_DIRENT *dirent, u_char *p, int len, u_char *p_msiex, int len_msiex, BIO *outdata);
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/*
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Local Variables:
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c-basic-offset: 4
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tab-width: 4
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indent-tabs-mode: t
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End:
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vim: set ts=4 noexpandtab:
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*/
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