dlls/imagehlp/access.c

   1 /*
   2  *      IMAGEHLP library
   3  *
   4  *      Copyright 1998  Patrik Stridvall
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22 #include <string.h>
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "winnt.h"
  26 #include "winreg.h"
  27 #include "winternl.h"
  28 #include "winerror.h"
  29 #include "wine/debug.h"
  30 #include "imagehlp.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(imagehlp);
  33
  34 /***********************************************************************
  35  *           Data
  36  */
  37
  38 static PLOADED_IMAGE IMAGEHLP_pFirstLoadedImage=NULL;
  39 static PLOADED_IMAGE IMAGEHLP_pLastLoadedImage=NULL;
  40
  41 static LOADED_IMAGE IMAGEHLP_EmptyLoadedImage = {
  42   NULL,       /* ModuleName */
  43   0,          /* hFile */
  44   NULL,       /* MappedAddress */
  45   NULL,       /* FileHeader */
  46   NULL,       /* LastRvaSection */
  47   0,          /* NumberOfSections */
  48   NULL,       /* Sections */
  49   1,          /* Characteristics */
  50   FALSE,      /* fSystemImage */
  51   FALSE,      /* fDOSImage */
  52   { &IMAGEHLP_EmptyLoadedImage.Links, &IMAGEHLP_EmptyLoadedImage.Links }, /* Links */
  53   148,        /* SizeOfImage; */
  54 };
  55
  56 extern HANDLE IMAGEHLP_hHeap;
  57
  58 /***********************************************************************
  59  *              GetImageConfigInformation (IMAGEHLP.@)
  60  */
  61 BOOL WINAPI GetImageConfigInformation(
  62   PLOADED_IMAGE LoadedImage,
  63   PIMAGE_LOAD_CONFIG_DIRECTORY ImageConfigInformation)
  64 {
  65   FIXME("(%p, %p): stub\n",
  66     LoadedImage, ImageConfigInformation
  67   );
  68   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
  69   return FALSE;
  70 }
  71
  72 /***********************************************************************
  73  *              GetImageUnusedHeaderBytes (IMAGEHLP.@)
  74  */
  75 DWORD WINAPI GetImageUnusedHeaderBytes(
  76   PLOADED_IMAGE LoadedImage,
  77   LPDWORD SizeUnusedHeaderBytes)
  78 {
  79   FIXME("(%p, %p): stub\n",
  80     LoadedImage, SizeUnusedHeaderBytes
  81   );
  82   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
  83   return 0;
  84 }
  85
  86 /***********************************************************************
  87  *              ImageLoad (IMAGEHLP.@)
  88  */
  89 PLOADED_IMAGE WINAPI ImageLoad(LPSTR DllName, LPSTR DllPath)
  90 {
  91   PLOADED_IMAGE pLoadedImage;
  92
  93   FIXME("(%s, %s): stub\n", DllName, DllPath);
  94
  95   pLoadedImage = HeapAlloc(IMAGEHLP_hHeap, 0, sizeof(LOADED_IMAGE));
  96   if (pLoadedImage)
  97     pLoadedImage->FileHeader = HeapAlloc(IMAGEHLP_hHeap, 0, sizeof(IMAGE_NT_HEADERS));
  98
  99   return pLoadedImage;
 100 }
 101
 102 /***********************************************************************
 103  *              ImageUnload (IMAGEHLP.@)
 104  */
 105 BOOL WINAPI ImageUnload(PLOADED_IMAGE pLoadedImage)
 106 {
 107   LIST_ENTRY *pCurrent, *pFind;
 108
 109   TRACE("(%p)\n", pLoadedImage);
 110
 111   if(!IMAGEHLP_pFirstLoadedImage || !pLoadedImage)
 112     {
 113       /* No image loaded or null pointer */
 114       SetLastError(ERROR_INVALID_PARAMETER);
 115       return FALSE;
 116     }
 117
 118   pFind=&pLoadedImage->Links;
 119   pCurrent=&IMAGEHLP_pFirstLoadedImage->Links;
 120   while((pCurrent != pFind) &&
 121     (pCurrent != NULL))
 122       pCurrent = pCurrent->Flink;
 123   if(!pCurrent)
 124     {
 125       /* Not found */
 126       SetLastError(ERROR_INVALID_PARAMETER);
 127       return FALSE;
 128     }
 129
 130   if(pCurrent->Blink)
 131     pCurrent->Blink->Flink = pCurrent->Flink;
 132   else
 133     IMAGEHLP_pFirstLoadedImage = pCurrent->Flink?CONTAINING_RECORD(
 134       pCurrent->Flink, LOADED_IMAGE, Links):NULL;
 135
 136   if(pCurrent->Flink)
 137     pCurrent->Flink->Blink = pCurrent->Blink;
 138   else
 139     IMAGEHLP_pLastLoadedImage = pCurrent->Blink?CONTAINING_RECORD(
 140       pCurrent->Blink, LOADED_IMAGE, Links):NULL;
 141
 142   return FALSE;
 143 }
 144
 145 /***********************************************************************
 146  *              MapAndLoad (IMAGEHLP.@)
 147  */
 148 BOOL WINAPI MapAndLoad(LPSTR pszImageName, LPSTR pszDllPath, PLOADED_IMAGE pLoadedImage,
 149                        BOOL bDotDll, BOOL bReadOnly)
 150 {
 151     CHAR szFileName[MAX_PATH];
 152     HANDLE hFile = INVALID_HANDLE_VALUE;
 153     HANDLE hFileMapping = NULL;
 154     PVOID mapping = NULL;
 155     PIMAGE_NT_HEADERS pNtHeader = NULL;
 156
 157     TRACE("(%s, %s, %p, %d, %d)\n",
 158           pszImageName, pszDllPath, pLoadedImage, bDotDll, bReadOnly);
 159
 160     if (!SearchPathA(pszDllPath, pszImageName, bDotDll ? ".DLL" : ".EXE",
 161                      sizeof(szFileName), szFileName, NULL))
 162     {
 163         SetLastError(ERROR_FILE_NOT_FOUND);
 164         goto Error;
 165     }
 166
 167     hFile = CreateFileA(szFileName,
 168                         GENERIC_READ | (bReadOnly ? 0 : GENERIC_WRITE),
 169                         FILE_SHARE_READ,
 170                         NULL, OPEN_EXISTING, 0, NULL);
 171     if (hFile == INVALID_HANDLE_VALUE)
 172     {
 173         WARN("CreateFile: Error = %d\n", GetLastError());
 174         goto Error;
 175     }
 176
 177     hFileMapping = CreateFileMappingA(hFile, NULL,
 178                                       (bReadOnly ? PAGE_READONLY : PAGE_READWRITE) | SEC_COMMIT,
 179                                       0, 0, NULL);
 180     if (!hFileMapping)
 181     {
 182         WARN("CreateFileMapping: Error = %d\n", GetLastError());
 183         goto Error;
 184     }
 185
 186     mapping = MapViewOfFile(hFileMapping, bReadOnly ? FILE_MAP_READ : FILE_MAP_WRITE, 0, 0, 0);
 187     CloseHandle(hFileMapping);
 188     if (!mapping)
 189     {
 190         WARN("MapViewOfFile: Error = %d\n", GetLastError());
 191         goto Error;
 192     }
 193
 194     if (!(pNtHeader = RtlImageNtHeader(mapping)))
 195     {
 196         WARN("Not an NT header\n");
 197         UnmapViewOfFile(mapping);
 198         goto Error;
 199     }
 200
 201     pLoadedImage->ModuleName       = HeapAlloc(GetProcessHeap(), 0,
 202                                                strlen(szFileName) + 1);
 203     if (pLoadedImage->ModuleName) strcpy(pLoadedImage->ModuleName, szFileName);
 204     pLoadedImage->hFile            = hFile;
 205     pLoadedImage->MappedAddress    = mapping;
 206     pLoadedImage->FileHeader       = pNtHeader;
 207     pLoadedImage->Sections         = (PIMAGE_SECTION_HEADER)
 208         ((LPBYTE) &pNtHeader->OptionalHeader +
 209          pNtHeader->FileHeader.SizeOfOptionalHeader);
 210     pLoadedImage->NumberOfSections = pNtHeader->FileHeader.NumberOfSections;
 211     pLoadedImage->SizeOfImage      = GetFileSize(hFile, NULL);
 212     pLoadedImage->Characteristics  = pNtHeader->FileHeader.Characteristics;
 213     pLoadedImage->LastRvaSection   = pLoadedImage->Sections;
 214
 215     pLoadedImage->fSystemImage     = FALSE; /* FIXME */
 216     pLoadedImage->fDOSImage        = FALSE; /* FIXME */
 217
 218     pLoadedImage->Links.Flink      = &pLoadedImage->Links;
 219     pLoadedImage->Links.Blink      = &pLoadedImage->Links;
 220
 221     return TRUE;
 222
 223 Error:
 224     if (hFile != INVALID_HANDLE_VALUE) CloseHandle(hFile);
 225     return FALSE;
 226 }
 227
 228 /***********************************************************************
 229  *              SetImageConfigInformation (IMAGEHLP.@)
 230  */
 231 BOOL WINAPI SetImageConfigInformation(
 232   PLOADED_IMAGE LoadedImage,
 233   PIMAGE_LOAD_CONFIG_DIRECTORY ImageConfigInformation)
 234 {
 235   FIXME("(%p, %p): stub\n",
 236     LoadedImage, ImageConfigInformation
 237   );
 238   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 239   return FALSE;
 240 }
 241
 242 /***********************************************************************
 243  *              UnMapAndLoad (IMAGEHLP.@)
 244  */
 245 BOOL WINAPI UnMapAndLoad(PLOADED_IMAGE pLoadedImage)
 246 {
 247     HeapFree(GetProcessHeap(), 0, pLoadedImage->ModuleName);
 248     /* FIXME: MSDN states that a new checksum is computed and stored into the file */
 249     if (pLoadedImage->MappedAddress) UnmapViewOfFile(pLoadedImage->MappedAddress);
 250     if (pLoadedImage->hFile != INVALID_HANDLE_VALUE) CloseHandle(pLoadedImage->hFile);
 251     return TRUE;
 252 }