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320 lines
8.8 KiB
C
320 lines
8.8 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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*
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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 "winreg.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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/***********************************************************************
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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_DOS_HEADER dos_hdr;
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IMAGE_NT_HEADERS nt_hdr;
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DWORD count;
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BOOL r;
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IMAGE_DATA_DIRECTORY *sd;
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TRACE("handle %p\n", handle );
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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 FALSE;
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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 FALSE;
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if( count != sizeof dos_hdr )
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return FALSE;
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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 FALSE;
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count = 0;
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r = ReadFile( handle, &nt_hdr, sizeof nt_hdr, &count, NULL );
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if( !r )
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return FALSE;
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if( count != sizeof nt_hdr )
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return FALSE;
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sd = &nt_hdr.OptionalHeader.
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DataDirectory[IMAGE_FILE_SECURITY_DIRECTORY];
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TRACE("size = %x addr = %x\n", 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_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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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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* ImageAddCertificate (IMAGEHLP.@)
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*/
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BOOL WINAPI ImageAddCertificate(
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HANDLE FileHandle, PWIN_CERTIFICATE Certificate, PDWORD Index)
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{
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FIXME("(%p, %p, %p): stub\n",
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FileHandle, Certificate, Index
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);
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SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
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return FALSE;
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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;
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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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if( Indices )
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{
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FIXME("Indices not handled!\n");
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return FALSE;
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}
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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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*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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}
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/* next certificate */
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offset += hdr.dwLength;
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}
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return TRUE;
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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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PWIN_CERTIFICATE Certificate, PDWORD RequiredLength)
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{
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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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if( !IMAGEHLP_GetCertificateOffset( handle, Index, &ofs, &size ) )
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return FALSE;
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if( !Certificate )
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{
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*RequiredLength = size;
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return TRUE;
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}
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if( *RequiredLength < size )
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{
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*RequiredLength = size;
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SetLastError( ERROR_INSUFFICIENT_BUFFER );
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return FALSE;
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}
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*RequiredLength = size;
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offset = SetFilePointer( handle, ofs, NULL, FILE_BEGIN );
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if( offset == INVALID_SET_FILE_POINTER )
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return FALSE;
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r = ReadFile( handle, Certificate, size, &count, NULL );
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if( !r )
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return FALSE;
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if( count != size )
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return FALSE;
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TRACE("OK\n");
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return TRUE;
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}
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/***********************************************************************
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* ImageGetCertificateHeader (IMAGEHLP.@)
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*/
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BOOL WINAPI ImageGetCertificateHeader(
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HANDLE handle, DWORD index, PWIN_CERTIFICATE pCert)
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{
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DWORD r, offset, ofs, size, count;
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const size_t cert_hdr_size = sizeof *pCert - sizeof pCert->bCertificate;
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TRACE("%p %d %p\n", handle, index, pCert);
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if( !IMAGEHLP_GetCertificateOffset( handle, index, &ofs, &size ) )
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return FALSE;
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if( size < cert_hdr_size )
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return FALSE;
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offset = SetFilePointer( handle, ofs, NULL, FILE_BEGIN );
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if( offset == INVALID_SET_FILE_POINTER )
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return FALSE;
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r = ReadFile( handle, pCert, 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("OK\n");
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return TRUE;
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}
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/***********************************************************************
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* ImageGetDigestStream (IMAGEHLP.@)
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*/
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BOOL WINAPI ImageGetDigestStream(
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HANDLE FileHandle, DWORD DigestLevel,
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DIGEST_FUNCTION DigestFunction, DIGEST_HANDLE DigestHandle)
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{
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FIXME("(%p, %d, %p, %p): stub\n",
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FileHandle, DigestLevel, DigestFunction, DigestHandle
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);
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SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
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return FALSE;
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}
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/***********************************************************************
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* ImageRemoveCertificate (IMAGEHLP.@)
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*/
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BOOL WINAPI ImageRemoveCertificate(HANDLE FileHandle, DWORD Index)
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{
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FIXME("(%p, %d): stub\n", FileHandle, Index);
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SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
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return FALSE;
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}
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