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 "winternl.h"
  27 #include "winerror.h"
  28 #include "wine/debug.h"
  29 #include "imagehlp.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(imagehlp);
  32
  33 /***********************************************************************
  34  *           Data
  35  */
  36
  37 static PLOADED_IMAGE IMAGEHLP_pFirstLoadedImage=NULL;
  38 static PLOADED_IMAGE IMAGEHLP_pLastLoadedImage=NULL;
  39
  40 static LOADED_IMAGE IMAGEHLP_EmptyLoadedImage = {
  41   NULL,       /* ModuleName */
  42   0,          /* hFile */
  43   NULL,       /* MappedAddress */
  44   NULL,       /* FileHeader */
  45   NULL,       /* LastRvaSection */
  46   0,          /* NumberOfSections */
  47   NULL,       /* Sections */
  48   1,          /* Characteristics */
  49   FALSE,      /* fSystemImage */
  50   FALSE,      /* fDOSImage */
  51   { &IMAGEHLP_EmptyLoadedImage.Links, &IMAGEHLP_EmptyLoadedImage.Links }, /* Links */
  52   148,        /* SizeOfImage; */
  53 };
  54
  55 extern HANDLE IMAGEHLP_hHeap;
  56
  57 /***********************************************************************
  58  *              GetImageConfigInformation (IMAGEHLP.@)
  59  */
  60 BOOL WINAPI GetImageConfigInformation(
  61   PLOADED_IMAGE LoadedImage,
  62   PIMAGE_LOAD_CONFIG_DIRECTORY ImageConfigInformation)
  63 {
  64   FIXME("(%p, %p): stub\n",
  65     LoadedImage, ImageConfigInformation
  66   );
  67   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
  68   return FALSE;
  69 }
  70
  71 /***********************************************************************
  72  *              GetImageUnusedHeaderBytes (IMAGEHLP.@)
  73  */
  74 DWORD WINAPI GetImageUnusedHeaderBytes(
  75   PLOADED_IMAGE LoadedImage,
  76   LPDWORD SizeUnusedHeaderBytes)
  77 {
  78   FIXME("(%p, %p): stub\n",
  79     LoadedImage, SizeUnusedHeaderBytes
  80   );
  81   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
  82   return 0;
  83 }
  84
  85 /***********************************************************************
  86  *              ImageLoad (IMAGEHLP.@)
  87  */
  88 PLOADED_IMAGE WINAPI ImageLoad(LPSTR DllName, LPSTR DllPath)
  89 {
  90   PLOADED_IMAGE pLoadedImage;
  91
  92   FIXME("(%s, %s): stub\n", DllName, DllPath);
  93
  94   pLoadedImage = HeapAlloc(IMAGEHLP_hHeap, 0, sizeof(LOADED_IMAGE));
  95   if (pLoadedImage)
  96     pLoadedImage->FileHeader = HeapAlloc(IMAGEHLP_hHeap, 0, sizeof(IMAGE_NT_HEADERS));
  97
  98   return pLoadedImage;
  99 }
 100
 101 /***********************************************************************
 102  *              ImageUnload (IMAGEHLP.@)
 103  */
 104 BOOL WINAPI ImageUnload(PLOADED_IMAGE pLoadedImage)
 105 {
 106   LIST_ENTRY *pCurrent, *pFind;
 107
 108   TRACE("(%p)\n", pLoadedImage);
 109
 110   if(!IMAGEHLP_pFirstLoadedImage || !pLoadedImage)
 111     {
 112       /* No image loaded or null pointer */
 113       SetLastError(ERROR_INVALID_PARAMETER);
 114       return FALSE;
 115     }
 116
 117   pFind=&pLoadedImage->Links;
 118   pCurrent=&IMAGEHLP_pFirstLoadedImage->Links;
 119   while((pCurrent != pFind) &&
 120     (pCurrent != NULL))
 121       pCurrent = pCurrent->Flink;
 122   if(!pCurrent)
 123     {
 124       /* Not found */
 125       SetLastError(ERROR_INVALID_PARAMETER);
 126       return FALSE;
 127     }
 128
 129   if(pCurrent->Blink)
 130     pCurrent->Blink->Flink = pCurrent->Flink;
 131   else
 132     IMAGEHLP_pFirstLoadedImage = pCurrent->Flink?CONTAINING_RECORD(
 133       pCurrent->Flink, LOADED_IMAGE, Links):NULL;
 134
 135   if(pCurrent->Flink)
 136     pCurrent->Flink->Blink = pCurrent->Blink;
 137   else
 138     IMAGEHLP_pLastLoadedImage = pCurrent->Blink?CONTAINING_RECORD(
 139       pCurrent->Blink, LOADED_IMAGE, Links):NULL;
 140
 141   return FALSE;
 142 }
 143
 144 /***********************************************************************
 145  *              MapAndLoad (IMAGEHLP.@)
 146  */
 147 BOOL WINAPI MapAndLoad(LPSTR pszImageName, LPSTR pszDllPath, PLOADED_IMAGE pLoadedImage,
 148                        BOOL bDotDll, BOOL bReadOnly)
 149 {
 150     CHAR szFileName[MAX_PATH];
 151     HANDLE hFile = INVALID_HANDLE_VALUE;
 152     HANDLE hFileMapping = NULL;
 153     PVOID mapping = NULL;
 154     PIMAGE_NT_HEADERS pNtHeader = NULL;
 155
 156     TRACE("(%s, %s, %p, %d, %d)\n",
 157           pszImageName, pszDllPath, pLoadedImage, bDotDll, bReadOnly);
 158
 159     if (!SearchPathA(pszDllPath, pszImageName, bDotDll ? ".DLL" : ".EXE",
 160                      sizeof(szFileName), szFileName, NULL))
 161     {
 162         SetLastError(ERROR_FILE_NOT_FOUND);
 163         goto Error;
 164     }
 165
 166     hFile = CreateFileA(szFileName,
 167                         GENERIC_READ | (bReadOnly ? 0 : GENERIC_WRITE),
 168                         FILE_SHARE_READ,
 169                         NULL, OPEN_EXISTING, 0, NULL);
 170     if (hFile == INVALID_HANDLE_VALUE)
 171     {
 172         WARN("CreateFile: Error = %d\n", GetLastError());
 173         goto Error;
 174     }
 175
 176     hFileMapping = CreateFileMappingA(hFile, NULL,
 177                                       (bReadOnly ? PAGE_READONLY : PAGE_READWRITE) | SEC_COMMIT,
 178                                       0, 0, NULL);
 179     if (!hFileMapping)
 180     {
 181         WARN("CreateFileMapping: Error = %d\n", GetLastError());
 182         goto Error;
 183     }
 184
 185     mapping = MapViewOfFile(hFileMapping, bReadOnly ? FILE_MAP_READ : FILE_MAP_WRITE, 0, 0, 0);
 186     CloseHandle(hFileMapping);
 187     if (!mapping)
 188     {
 189         WARN("MapViewOfFile: Error = %d\n", GetLastError());
 190         goto Error;
 191     }
 192
 193     if (!(pNtHeader = RtlImageNtHeader(mapping)))
 194     {
 195         WARN("Not an NT header\n");
 196         UnmapViewOfFile(mapping);
 197         goto Error;
 198     }
 199
 200     pLoadedImage->ModuleName       = HeapAlloc(GetProcessHeap(), 0,
 201                                                strlen(szFileName) + 1);
 202     if (pLoadedImage->ModuleName) strcpy(pLoadedImage->ModuleName, szFileName);
 203     pLoadedImage->hFile            = hFile;
 204     pLoadedImage->MappedAddress    = mapping;
 205     pLoadedImage->FileHeader       = pNtHeader;
 206     pLoadedImage->Sections         = (PIMAGE_SECTION_HEADER)
 207         ((LPBYTE) &pNtHeader->OptionalHeader +
 208          pNtHeader->FileHeader.SizeOfOptionalHeader);
 209     pLoadedImage->NumberOfSections = pNtHeader->FileHeader.NumberOfSections;
 210     pLoadedImage->SizeOfImage      = GetFileSize(hFile, NULL);
 211     pLoadedImage->Characteristics  = pNtHeader->FileHeader.Characteristics;
 212     pLoadedImage->LastRvaSection   = pLoadedImage->Sections;
 213
 214     pLoadedImage->fSystemImage     = FALSE; /* FIXME */
 215     pLoadedImage->fDOSImage        = FALSE; /* FIXME */
 216
 217     pLoadedImage->Links.Flink      = &pLoadedImage->Links;
 218     pLoadedImage->Links.Blink      = &pLoadedImage->Links;
 219
 220     return TRUE;
 221
 222 Error:
 223     if (hFile != INVALID_HANDLE_VALUE) CloseHandle(hFile);
 224     return FALSE;
 225 }
 226
 227 /***********************************************************************
 228  *              SetImageConfigInformation (IMAGEHLP.@)
 229  */
 230 BOOL WINAPI SetImageConfigInformation(
 231   PLOADED_IMAGE LoadedImage,
 232   PIMAGE_LOAD_CONFIG_DIRECTORY ImageConfigInformation)
 233 {
 234   FIXME("(%p, %p): stub\n",
 235     LoadedImage, ImageConfigInformation
 236   );
 237   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 238   return FALSE;
 239 }
 240
 241 /***********************************************************************
 242  *              UnMapAndLoad (IMAGEHLP.@)
 243  */
 244 BOOL WINAPI UnMapAndLoad(PLOADED_IMAGE pLoadedImage)
 245 {
 246     HeapFree(GetProcessHeap(), 0, pLoadedImage->ModuleName);
 247     /* FIXME: MSDN states that a new checksum is computed and stored into the file */
 248     if (pLoadedImage->MappedAddress) UnmapViewOfFile(pLoadedImage->MappedAddress);
 249     if (pLoadedImage->hFile != INVALID_HANDLE_VALUE) CloseHandle(pLoadedImage->hFile);
 250     return TRUE;
 251 }