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733 lines
19 KiB
C
733 lines
19 KiB
C
/*
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* IMAGEHLP library
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*
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* Copyright 1998 Patrik Stridvall
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* Copyright 2003 Mike McCormack
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* Copyright 2009 Owen Rudge for CodeWeavers
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdarg.h>
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#include "windef.h"
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#include "winbase.h"
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#include "winerror.h"
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#include "winternl.h"
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#include "winnt.h"
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#include "imagehlp.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(imagehlp);
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/*
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* These functions are partially documented at:
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* http://www.cs.auckland.ac.nz/~pgut001/pubs/authenticode.txt
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*/
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#define HDR_FAIL -1
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#define HDR_NT32 0
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#define HDR_NT64 1
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/***********************************************************************
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* IMAGEHLP_GetNTHeaders (INTERNAL)
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*
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* Return the IMAGE_NT_HEADERS for a PE file, after validating magic
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* numbers and distinguishing between 32-bit and 64-bit files.
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*/
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static int IMAGEHLP_GetNTHeaders(HANDLE handle, DWORD *pe_offset, IMAGE_NT_HEADERS32 *nt32, IMAGE_NT_HEADERS64 *nt64)
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{
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IMAGE_DOS_HEADER dos_hdr;
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DWORD count;
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BOOL r;
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TRACE("handle %p\n", handle);
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if ((!nt32) || (!nt64))
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return HDR_FAIL;
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/* read the DOS header */
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count = SetFilePointer(handle, 0, NULL, FILE_BEGIN);
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if (count == INVALID_SET_FILE_POINTER)
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return HDR_FAIL;
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count = 0;
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r = ReadFile(handle, &dos_hdr, sizeof dos_hdr, &count, NULL);
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if (!r)
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return HDR_FAIL;
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if (count != sizeof dos_hdr)
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return HDR_FAIL;
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/* verify magic number of 'MZ' */
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if (dos_hdr.e_magic != 0x5A4D)
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return HDR_FAIL;
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if (pe_offset != NULL)
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*pe_offset = dos_hdr.e_lfanew;
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/* read the PE header */
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count = SetFilePointer(handle, dos_hdr.e_lfanew, NULL, FILE_BEGIN);
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if (count == INVALID_SET_FILE_POINTER)
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return HDR_FAIL;
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count = 0;
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r = ReadFile(handle, nt32, sizeof(IMAGE_NT_HEADERS32), &count, NULL);
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if (!r)
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return HDR_FAIL;
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if (count != sizeof(IMAGE_NT_HEADERS32))
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return HDR_FAIL;
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/* verify NT signature */
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if (nt32->Signature != IMAGE_NT_SIGNATURE)
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return HDR_FAIL;
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/* check if we have a 32-bit or 64-bit executable */
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switch (nt32->OptionalHeader.Magic)
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{
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case IMAGE_NT_OPTIONAL_HDR32_MAGIC:
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return HDR_NT32;
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case IMAGE_NT_OPTIONAL_HDR64_MAGIC:
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/* Re-read as 64-bit */
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count = SetFilePointer(handle, dos_hdr.e_lfanew, NULL, FILE_BEGIN);
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if (count == INVALID_SET_FILE_POINTER)
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return HDR_FAIL;
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count = 0;
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r = ReadFile(handle, nt64, sizeof(IMAGE_NT_HEADERS64), &count, NULL);
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if (!r)
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return HDR_FAIL;
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if (count != sizeof(IMAGE_NT_HEADERS64))
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return HDR_FAIL;
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/* verify NT signature */
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if (nt64->Signature != IMAGE_NT_SIGNATURE)
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return HDR_FAIL;
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return HDR_NT64;
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}
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return HDR_FAIL;
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}
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/***********************************************************************
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* IMAGEHLP_GetSecurityDirOffset (INTERNAL)
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*
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* Read a file's PE header, and return the offset and size of the
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* security directory.
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*/
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static BOOL IMAGEHLP_GetSecurityDirOffset( HANDLE handle,
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DWORD *pdwOfs, DWORD *pdwSize )
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{
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IMAGE_NT_HEADERS32 nt_hdr32;
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IMAGE_NT_HEADERS64 nt_hdr64;
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IMAGE_DATA_DIRECTORY *sd;
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int ret;
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ret = IMAGEHLP_GetNTHeaders(handle, NULL, &nt_hdr32, &nt_hdr64);
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if (ret == HDR_NT32)
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sd = &nt_hdr32.OptionalHeader.DataDirectory[IMAGE_FILE_SECURITY_DIRECTORY];
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else if (ret == HDR_NT64)
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sd = &nt_hdr64.OptionalHeader.DataDirectory[IMAGE_FILE_SECURITY_DIRECTORY];
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else
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return FALSE;
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TRACE("ret = %d size = %x addr = %x\n", ret, sd->Size, sd->VirtualAddress);
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*pdwSize = sd->Size;
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*pdwOfs = sd->VirtualAddress;
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return TRUE;
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}
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/***********************************************************************
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* IMAGEHLP_SetSecurityDirOffset (INTERNAL)
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*
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* Read a file's PE header, and update the offset and size of the
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* security directory.
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*/
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static BOOL IMAGEHLP_SetSecurityDirOffset(HANDLE handle,
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DWORD dwOfs, DWORD dwSize)
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{
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IMAGE_NT_HEADERS32 nt_hdr32;
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IMAGE_NT_HEADERS64 nt_hdr64;
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IMAGE_DATA_DIRECTORY *sd;
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int ret, nt_hdr_size = 0;
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DWORD pe_offset;
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void *nt_hdr;
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DWORD count;
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BOOL r;
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ret = IMAGEHLP_GetNTHeaders(handle, &pe_offset, &nt_hdr32, &nt_hdr64);
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if (ret == HDR_NT32)
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{
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sd = &nt_hdr32.OptionalHeader.DataDirectory[IMAGE_FILE_SECURITY_DIRECTORY];
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nt_hdr = &nt_hdr32;
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nt_hdr_size = sizeof(IMAGE_NT_HEADERS32);
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}
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else if (ret == HDR_NT64)
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{
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sd = &nt_hdr64.OptionalHeader.DataDirectory[IMAGE_FILE_SECURITY_DIRECTORY];
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nt_hdr = &nt_hdr64;
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nt_hdr_size = sizeof(IMAGE_NT_HEADERS64);
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}
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else
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return FALSE;
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sd->Size = dwSize;
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sd->VirtualAddress = dwOfs;
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TRACE("size = %x addr = %x\n", sd->Size, sd->VirtualAddress);
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/* write the header back again */
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count = SetFilePointer(handle, pe_offset, NULL, FILE_BEGIN);
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if (count == INVALID_SET_FILE_POINTER)
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return FALSE;
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count = 0;
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r = WriteFile(handle, nt_hdr, nt_hdr_size, &count, NULL);
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if (!r)
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return FALSE;
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if (count != nt_hdr_size)
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return FALSE;
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return TRUE;
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}
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/***********************************************************************
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* IMAGEHLP_GetCertificateOffset (INTERNAL)
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*
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* Read a file's PE header, and return the offset and size of the
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* security directory.
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*/
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static BOOL IMAGEHLP_GetCertificateOffset( HANDLE handle, DWORD num,
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DWORD *pdwOfs, DWORD *pdwSize )
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{
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DWORD size, count, offset, len, sd_VirtualAddr;
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BOOL r;
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r = IMAGEHLP_GetSecurityDirOffset( handle, &sd_VirtualAddr, &size );
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if( !r )
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return FALSE;
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offset = 0;
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/* take the n'th certificate */
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while( 1 )
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{
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/* read the length of the current certificate */
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count = SetFilePointer( handle, sd_VirtualAddr + offset,
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NULL, FILE_BEGIN );
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if( count == INVALID_SET_FILE_POINTER )
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return FALSE;
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r = ReadFile( handle, &len, sizeof len, &count, NULL );
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if( !r )
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return FALSE;
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if( count != sizeof len )
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return FALSE;
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/* check the certificate is not too big or too small */
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if( len < sizeof len )
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return FALSE;
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if( len > (size-offset) )
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return FALSE;
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if( !num-- )
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break;
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/* calculate the offset of the next certificate */
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offset += len;
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/* padded out to the nearest 8-byte boundary */
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if( len % 8 )
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offset += 8 - (len % 8);
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if( offset >= size )
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return FALSE;
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}
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*pdwOfs = sd_VirtualAddr + offset;
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*pdwSize = len;
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TRACE("len = %x addr = %x\n", len, sd_VirtualAddr + offset);
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return TRUE;
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}
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/***********************************************************************
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* IMAGEHLP_RecalculateChecksum (INTERNAL)
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*
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* Update the NT header checksum for the specified file.
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*/
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static BOOL IMAGEHLP_RecalculateChecksum(HANDLE handle)
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{
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DWORD FileLength, count, HeaderSum, pe_offset, nt_hdr_size;
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IMAGE_NT_HEADERS32 nt_hdr32;
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IMAGE_NT_HEADERS64 nt_hdr64;
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LPVOID BaseAddress;
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HANDLE hMapping;
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DWORD *CheckSum;
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void *nt_hdr;
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int ret;
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BOOL r;
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TRACE("handle %p\n", handle);
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ret = IMAGEHLP_GetNTHeaders(handle, &pe_offset, &nt_hdr32, &nt_hdr64);
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if (ret == HDR_NT32)
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{
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CheckSum = &nt_hdr32.OptionalHeader.CheckSum;
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nt_hdr = &nt_hdr32;
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nt_hdr_size = sizeof(IMAGE_NT_HEADERS32);
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}
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else if (ret == HDR_NT64)
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{
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CheckSum = &nt_hdr64.OptionalHeader.CheckSum;
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nt_hdr = &nt_hdr64;
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nt_hdr_size = sizeof(IMAGE_NT_HEADERS64);
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}
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else
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return FALSE;
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hMapping = CreateFileMappingW(handle, NULL, PAGE_READONLY, 0, 0, NULL);
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if (!hMapping)
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return FALSE;
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BaseAddress = MapViewOfFile(hMapping, FILE_MAP_READ, 0, 0, 0);
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if (!BaseAddress)
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{
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CloseHandle(hMapping);
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return FALSE;
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}
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FileLength = GetFileSize(handle, NULL);
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*CheckSum = 0;
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CheckSumMappedFile(BaseAddress, FileLength, &HeaderSum, CheckSum);
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UnmapViewOfFile(BaseAddress);
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CloseHandle(hMapping);
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if (*CheckSum)
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{
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/* write the header back again */
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count = SetFilePointer(handle, pe_offset, NULL, FILE_BEGIN);
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if (count == INVALID_SET_FILE_POINTER)
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return FALSE;
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count = 0;
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r = WriteFile(handle, nt_hdr, nt_hdr_size, &count, NULL);
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if (!r)
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return FALSE;
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if (count != nt_hdr_size)
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return FALSE;
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return TRUE;
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}
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return FALSE;
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}
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/***********************************************************************
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* ImageAddCertificate (IMAGEHLP.@)
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*
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* Adds the specified certificate to the security directory of
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* open PE file.
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*/
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BOOL WINAPI ImageAddCertificate(
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HANDLE FileHandle, LPWIN_CERTIFICATE Certificate, PDWORD Index)
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{
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DWORD size = 0, count = 0, offset = 0, sd_VirtualAddr = 0, index = 0;
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WIN_CERTIFICATE hdr;
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const size_t cert_hdr_size = sizeof hdr - sizeof hdr.bCertificate;
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BOOL r;
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TRACE("(%p, %p, %p)\n", FileHandle, Certificate, Index);
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r = IMAGEHLP_GetSecurityDirOffset(FileHandle, &sd_VirtualAddr, &size);
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/* If we've already got a security directory, find the end of it */
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if ((r) && (sd_VirtualAddr != 0))
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{
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offset = 0;
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index = 0;
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count = 0;
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/* Check if the security directory is at the end of the file.
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If not, we should probably relocate it. */
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if (GetFileSize(FileHandle, NULL) != sd_VirtualAddr + size)
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{
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FIXME("Security directory already present but not located at EOF, not adding certificate\n");
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SetLastError(ERROR_NOT_SUPPORTED);
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return FALSE;
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}
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while (offset < size)
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{
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/* read the length of the current certificate */
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count = SetFilePointer (FileHandle, sd_VirtualAddr + offset,
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NULL, FILE_BEGIN);
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if (count == INVALID_SET_FILE_POINTER)
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return FALSE;
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r = ReadFile(FileHandle, &hdr, cert_hdr_size, &count, NULL);
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if (!r)
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return FALSE;
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if (count != cert_hdr_size)
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return FALSE;
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/* check the certificate is not too big or too small */
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if (hdr.dwLength < cert_hdr_size)
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return FALSE;
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if (hdr.dwLength > (size-offset))
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return FALSE;
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/* next certificate */
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offset += hdr.dwLength;
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/* padded out to the nearest 8-byte boundary */
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if (hdr.dwLength % 8)
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offset += 8 - (hdr.dwLength % 8);
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index++;
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}
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count = SetFilePointer (FileHandle, sd_VirtualAddr + offset, NULL, FILE_BEGIN);
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if (count == INVALID_SET_FILE_POINTER)
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return FALSE;
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}
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else
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{
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sd_VirtualAddr = SetFilePointer(FileHandle, 0, NULL, FILE_END);
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if (sd_VirtualAddr == INVALID_SET_FILE_POINTER)
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return FALSE;
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}
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/* Write the certificate to the file */
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r = WriteFile(FileHandle, Certificate, Certificate->dwLength, &count, NULL);
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if (!r)
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return FALSE;
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/* Pad out if necessary */
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if (Certificate->dwLength % 8)
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{
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char null[8];
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ZeroMemory(null, 8);
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WriteFile(FileHandle, null, 8 - (Certificate->dwLength % 8), NULL, NULL);
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size += 8 - (Certificate->dwLength % 8);
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}
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size += Certificate->dwLength;
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/* Update the security directory offset and size */
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if (!IMAGEHLP_SetSecurityDirOffset(FileHandle, sd_VirtualAddr, size))
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return FALSE;
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if (!IMAGEHLP_RecalculateChecksum(FileHandle))
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return FALSE;
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return TRUE;
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}
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/***********************************************************************
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* ImageEnumerateCertificates (IMAGEHLP.@)
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*/
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BOOL WINAPI ImageEnumerateCertificates(
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HANDLE handle, WORD TypeFilter, PDWORD CertificateCount,
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PDWORD Indices, DWORD IndexCount)
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{
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DWORD size, count, offset, sd_VirtualAddr, index;
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WIN_CERTIFICATE hdr;
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const size_t cert_hdr_size = sizeof hdr - sizeof hdr.bCertificate;
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BOOL r;
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TRACE("%p %hd %p %p %d\n",
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handle, TypeFilter, CertificateCount, Indices, IndexCount);
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r = IMAGEHLP_GetSecurityDirOffset( handle, &sd_VirtualAddr, &size );
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if( !r )
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return FALSE;
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offset = 0;
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index = 0;
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*CertificateCount = 0;
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while( offset < size )
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{
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/* read the length of the current certificate */
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count = SetFilePointer( handle, sd_VirtualAddr + offset,
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NULL, FILE_BEGIN );
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if( count == INVALID_SET_FILE_POINTER )
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return FALSE;
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r = ReadFile( handle, &hdr, cert_hdr_size, &count, NULL );
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if( !r )
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return FALSE;
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if( count != cert_hdr_size )
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return FALSE;
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TRACE("Size = %08x id = %08hx\n",
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hdr.dwLength, hdr.wCertificateType );
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/* check the certificate is not too big or too small */
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if( hdr.dwLength < cert_hdr_size )
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return FALSE;
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if( hdr.dwLength > (size-offset) )
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return FALSE;
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if( (TypeFilter == CERT_SECTION_TYPE_ANY) ||
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(TypeFilter == hdr.wCertificateType) )
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{
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(*CertificateCount)++;
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if(Indices && *CertificateCount <= IndexCount)
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*Indices++ = index;
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}
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/* next certificate */
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offset += hdr.dwLength;
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/* padded out to the nearest 8-byte boundary */
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if (hdr.dwLength % 8)
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offset += 8 - (hdr.dwLength % 8);
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index++;
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}
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return TRUE;
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}
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|
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/***********************************************************************
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* ImageGetCertificateData (IMAGEHLP.@)
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*
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* FIXME: not sure that I'm dealing with the Index the right way
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*/
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BOOL WINAPI ImageGetCertificateData(
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HANDLE handle, DWORD Index,
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LPWIN_CERTIFICATE Certificate, PDWORD RequiredLength)
|
|
{
|
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DWORD r, offset, ofs, size, count;
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TRACE("%p %d %p %p\n", handle, Index, Certificate, RequiredLength);
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|
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if( !RequiredLength)
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{
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SetLastError( ERROR_INVALID_PARAMETER );
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return FALSE;
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}
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|
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if( !IMAGEHLP_GetCertificateOffset( handle, Index, &ofs, &size ) )
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return FALSE;
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|
|
if( *RequiredLength < size )
|
|
{
|
|
*RequiredLength = size;
|
|
SetLastError( ERROR_INSUFFICIENT_BUFFER );
|
|
return FALSE;
|
|
}
|
|
|
|
if( !Certificate )
|
|
{
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return FALSE;
|
|
}
|
|
|
|
*RequiredLength = size;
|
|
|
|
offset = SetFilePointer( handle, ofs, NULL, FILE_BEGIN );
|
|
if( offset == INVALID_SET_FILE_POINTER )
|
|
return FALSE;
|
|
|
|
r = ReadFile( handle, Certificate, size, &count, NULL );
|
|
if( !r )
|
|
return FALSE;
|
|
if( count != size )
|
|
return FALSE;
|
|
|
|
TRACE("OK\n");
|
|
SetLastError( NO_ERROR );
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* ImageGetCertificateHeader (IMAGEHLP.@)
|
|
*/
|
|
BOOL WINAPI ImageGetCertificateHeader(
|
|
HANDLE handle, DWORD index, LPWIN_CERTIFICATE pCert)
|
|
{
|
|
DWORD r, offset, ofs, size, count;
|
|
const size_t cert_hdr_size = sizeof *pCert - sizeof pCert->bCertificate;
|
|
|
|
TRACE("%p %d %p\n", handle, index, pCert);
|
|
|
|
if( !IMAGEHLP_GetCertificateOffset( handle, index, &ofs, &size ) )
|
|
return FALSE;
|
|
|
|
if( size < cert_hdr_size )
|
|
return FALSE;
|
|
|
|
offset = SetFilePointer( handle, ofs, NULL, FILE_BEGIN );
|
|
if( offset == INVALID_SET_FILE_POINTER )
|
|
return FALSE;
|
|
|
|
r = ReadFile( handle, pCert, cert_hdr_size, &count, NULL );
|
|
if( !r )
|
|
return FALSE;
|
|
if( count != cert_hdr_size )
|
|
return FALSE;
|
|
|
|
TRACE("OK\n");
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* ImageGetDigestStream (IMAGEHLP.@)
|
|
*/
|
|
BOOL WINAPI ImageGetDigestStream(
|
|
HANDLE FileHandle, DWORD DigestLevel,
|
|
DIGEST_FUNCTION DigestFunction, DIGEST_HANDLE DigestHandle)
|
|
{
|
|
FIXME("(%p, %d, %p, %p): stub\n",
|
|
FileHandle, DigestLevel, DigestFunction, DigestHandle
|
|
);
|
|
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
|
|
return FALSE;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* ImageRemoveCertificate (IMAGEHLP.@)
|
|
*/
|
|
BOOL WINAPI ImageRemoveCertificate(HANDLE FileHandle, DWORD Index)
|
|
{
|
|
DWORD size = 0, count = 0, sd_VirtualAddr = 0, offset = 0;
|
|
DWORD data_size = 0, cert_size = 0, cert_size_padded = 0, ret = 0;
|
|
LPVOID cert_data;
|
|
BOOL r;
|
|
|
|
TRACE("(%p, %d)\n", FileHandle, Index);
|
|
|
|
r = ImageEnumerateCertificates(FileHandle, CERT_SECTION_TYPE_ANY, &count, NULL, 0);
|
|
|
|
if ((!r) || (count == 0))
|
|
return FALSE;
|
|
|
|
if ((!IMAGEHLP_GetSecurityDirOffset(FileHandle, &sd_VirtualAddr, &size)) ||
|
|
(!IMAGEHLP_GetCertificateOffset(FileHandle, Index, &offset, &cert_size)))
|
|
return FALSE;
|
|
|
|
/* Ignore any padding we have, too */
|
|
if (cert_size % 8)
|
|
cert_size_padded = cert_size + (8 - (cert_size % 8));
|
|
else
|
|
cert_size_padded = cert_size;
|
|
|
|
data_size = size - (offset - sd_VirtualAddr) - cert_size_padded;
|
|
|
|
if (data_size == 0)
|
|
{
|
|
ret = SetFilePointer(FileHandle, sd_VirtualAddr, NULL, FILE_BEGIN);
|
|
|
|
if (ret == INVALID_SET_FILE_POINTER)
|
|
return FALSE;
|
|
}
|
|
else
|
|
{
|
|
cert_data = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, data_size);
|
|
|
|
if (!cert_data)
|
|
return FALSE;
|
|
|
|
ret = SetFilePointer(FileHandle, offset + cert_size_padded, NULL, FILE_BEGIN);
|
|
|
|
if (ret == INVALID_SET_FILE_POINTER)
|
|
goto error;
|
|
|
|
/* Read any subsequent certificates */
|
|
r = ReadFile(FileHandle, cert_data, data_size, &count, NULL);
|
|
|
|
if ((!r) || (count != data_size))
|
|
goto error;
|
|
|
|
SetFilePointer(FileHandle, offset, NULL, FILE_BEGIN);
|
|
|
|
/* Write them one index back */
|
|
r = WriteFile(FileHandle, cert_data, data_size, &count, NULL);
|
|
|
|
if ((!r) || (count != data_size))
|
|
goto error;
|
|
|
|
HeapFree(GetProcessHeap(), 0, cert_data);
|
|
}
|
|
|
|
/* If security directory is at end of file, trim the file */
|
|
if (GetFileSize(FileHandle, NULL) == sd_VirtualAddr + size)
|
|
SetEndOfFile(FileHandle);
|
|
|
|
if (count == 1)
|
|
r = IMAGEHLP_SetSecurityDirOffset(FileHandle, 0, 0);
|
|
else
|
|
r = IMAGEHLP_SetSecurityDirOffset(FileHandle, sd_VirtualAddr, size - cert_size_padded);
|
|
|
|
if (!r)
|
|
return FALSE;
|
|
|
|
if (!IMAGEHLP_RecalculateChecksum(FileHandle))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
|
|
error:
|
|
HeapFree(GetProcessHeap(), 0, cert_data);
|
|
return FALSE;
|
|
}
|