[tkreuzer] 58361: [FREELDR] When processing forwarders and the target image was not yet loaded, try to load it (using .dll extension if no extension is given)
24 Feb
2013
24 Feb
'13
2:40 p.m.
Author: tkreuzer
Date: Sun Feb 24 14:40:21 2013
New Revision: 58361
URL: http://svn.reactos.org/svn/reactos?rev=58361&view=rev
Log:
[FREELDR]
When processing forwarders and the target image was not yet loaded, try to load it (using
.dll extension if no extension is given)
Modified:
trunk/reactos/boot/freeldr/freeldr/windows/peloader.c
Modified: trunk/reactos/boot/freeldr/freeldr/windows/peloader.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/windo…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/windows/peloader.c [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/windows/peloader.c [iso-8859-1] Sun Feb 24 14:40:21
2013
@@ -30,7 +30,8 @@
IN PIMAGE_THUNK_DATA ThunkData,
IN PIMAGE_EXPORT_DIRECTORY ExportDirectory,
IN ULONG ExportSize,
- IN BOOLEAN ProcessForwards);
+ IN BOOLEAN ProcessForwards,
+ IN PCSTR DirectoryPath);
static BOOLEAN
WinLdrpLoadAndScanReferencedDll(PLIST_ENTRY ModuleListHead,
@@ -42,7 +43,8 @@
WinLdrpScanImportAddressTable(IN OUT PLIST_ENTRY ModuleListHead,
IN PVOID DllBase,
IN PVOID ImageBase,
- IN PIMAGE_THUNK_DATA ThunkData);
+ IN PIMAGE_THUNK_DATA ThunkData,
+ IN PCSTR DirectoryPath);
@@ -57,8 +59,7 @@
PLDR_DATA_TABLE_ENTRY DataTableEntry;
LIST_ENTRY *ModuleEntry;
- TRACE("WinLdrCheckForLoadedDll: DllName %s, LoadedEntry: %X\n",
- DllName, LoadedEntry);
+ TRACE("WinLdrCheckForLoadedDll: DllName %s\n", DllName);
/* Just go through each entry in the LoadOrderList and compare loaded module's
name with a given name */
@@ -70,9 +71,9 @@
LDR_DATA_TABLE_ENTRY,
InLoadOrderLinks);
- TRACE("WinLdrCheckForLoadedDll: DTE %p, EP %p, base %p name
'%ws'\n",
+ TRACE("WinLdrCheckForLoadedDll: DTE %p, EP %p, base %p name
'%.*ws'\n",
DataTableEntry, DataTableEntry->EntryPoint,
DataTableEntry->DllBase,
- VaToPa(DataTableEntry->BaseDllName.Buffer));
+ DataTableEntry->BaseDllName.Length / 2,
VaToPa(DataTableEntry->BaseDllName.Buffer));
/* Compare names */
if (WinLdrpCompareDllName(DllName, &DataTableEntry->BaseDllName))
@@ -152,7 +153,8 @@
ModuleListHead,
DataTableEntry->DllBase,
ScanDTE->DllBase,
- (PIMAGE_THUNK_DATA)RVA(ScanDTE->DllBase,
ImportTable->FirstThunk));
+ (PIMAGE_THUNK_DATA)RVA(ScanDTE->DllBase,
ImportTable->FirstThunk),
+ DirectoryPath);
if (!Status)
{
@@ -241,8 +243,10 @@
/* Insert this DTE to a list in the LPB */
InsertTailList(ModuleListHead, &DataTableEntry->InLoadOrderLinks);
- TRACE("Inserting DTE %p, name='%S' DllBase=%p \n",
DataTableEntry,
- DataTableEntry->BaseDllName.Buffer, DataTableEntry->DllBase);
+ TRACE("Inserting DTE %p, name='%.*S' DllBase=%p \n",
DataTableEntry,
+ DataTableEntry->BaseDllName.Length / 2,
+ VaToPa(DataTableEntry->BaseDllName.Buffer),
+ DataTableEntry->DllBase);
/* Save pointer to a newly allocated and initialized entry */
*NewEntry = DataTableEntry;
@@ -293,7 +297,6 @@
/* Now read the MZ header to get the offset to the PE Header */
NtHeaders = RtlImageNtHeader(HeadersBuffer);
-
if (!NtHeaders)
{
//Print(L"Error - no NT header found in %s\n", FileName);
@@ -501,7 +504,8 @@
IN PIMAGE_THUNK_DATA ThunkData,
IN PIMAGE_EXPORT_DIRECTORY ExportDirectory,
IN ULONG ExportSize,
- IN BOOLEAN ProcessForwards)
+ IN BOOLEAN ProcessForwards,
+ IN PCSTR DirectoryPath)
{
ULONG Ordinal;
PULONG NameTable, FunctionTable;
@@ -509,7 +513,7 @@
LONG High, Low, Middle, Result;
ULONG Hint;
PIMAGE_IMPORT_BY_NAME ImportData;
- PCHAR ExportName;
+ PCHAR ExportName, ForwarderName;
//TRACE("WinLdrpBindImportName(): DllBase 0x%X, ImageBase 0x%X, ThunkData
0x%X, ExportDirectory 0x%X, ExportSize %d, ProcessForwards 0x%X\n",
// DllBase, ImageBase, ThunkData, ExportDirectory, ExportSize,
ProcessForwards);
@@ -646,28 +650,44 @@
/* Save a pointer to the function */
ThunkData->u1.Function = (ULONG_PTR)RVA(DllBase, FunctionTable[Ordinal]);
- /* Is it a forwarder? (function pointer isn't within the export directory) */
- if (((ULONG_PTR)VaToPa((PVOID)ThunkData->u1.Function) >
(ULONG_PTR)ExportDirectory) &&
- ((ULONG_PTR)VaToPa((PVOID)ThunkData->u1.Function) <
((ULONG_PTR)ExportDirectory + ExportSize)))
+ /* Is it a forwarder? (function pointer is within the export directory) */
+ ForwarderName = (PCHAR)VaToPa((PVOID)ThunkData->u1.Function);
+ if (((ULONG_PTR)ForwarderName > (ULONG_PTR)ExportDirectory) &&
+ ((ULONG_PTR)ForwarderName < ((ULONG_PTR)ExportDirectory + ExportSize)))
{
PLDR_DATA_TABLE_ENTRY DataTableEntry;
CHAR ForwardDllName[255];
PIMAGE_EXPORT_DIRECTORY RefExportDirectory;
ULONG RefExportSize;
+ NTSTATUS Status;
+ TRACE("WinLdrpBindImportName(): ForwarderName %s\n",
ForwarderName);
/* Save the name of the forward dll */
- RtlCopyMemory(ForwardDllName,
(PCHAR)VaToPa((PVOID)ThunkData->u1.Function), sizeof(ForwardDllName));
-
- /* Strip out its extension */
- *strchr(ForwardDllName,'.') = '\0';
-
- TRACE("WinLdrpBindImportName(): ForwardDllName %s\n",
ForwardDllName);
+ RtlCopyMemory(ForwardDllName, ForwarderName, sizeof(ForwardDllName));
+
+ /* Strip out the symbol name */
+ *strrchr(ForwardDllName,'.') = '\0';
+
+ /* Check if the target image is already loaded */
if (!WinLdrCheckForLoadedDll(ModuleListHead, ForwardDllName,
&DataTableEntry))
{
- /* We can't continue if DLL couldn't be loaded, so bomb
out with an error */
- //Print(L"Error loading DLL!\n");
- ERR("Error loading DLL!\n");
- return FALSE;
+ /* Check if the forward dll name has an extension */
+ if (strchr(ForwardDllName, '.') == NULL)
+ {
+ /* Name does not have an extension, append '.dll'
*/
+ strcat(ForwardDllName, ".dll");
+ }
+
+ /* Now let's try to load it! */
+ Status = WinLdrpLoadAndScanReferencedDll(ModuleListHead,
+ DirectoryPath,
+ ForwardDllName,
+ &DataTableEntry);
+ if (!Status)
+ {
+ ERR("WinLdrpLoadAndScanReferencedDll() failed to load
forwarder dll.\n");
+ return Status;
+ }
}
/* Get pointer to the export directory of loaded DLL */
@@ -687,7 +707,7 @@
BOOLEAN Status;
/* Get pointer to the import name */
- ImportName =
strchr((PCHAR)VaToPa((PVOID)ThunkData->u1.Function), '.') + 1;
+ ImportName = strrchr(ForwarderName, '.') + 1;
/* Create a IMAGE_IMPORT_BY_NAME structure, pointing to the local
Buffer */
ImportByName = (PIMAGE_IMPORT_BY_NAME)Buffer;
@@ -709,7 +729,8 @@
&RefThunkData,
RefExportDirectory,
RefExportSize,
- TRUE);
+ TRUE,
+ DirectoryPath);
/* Fill out the ThunkData with data from RefThunkData */
ThunkData->u1 = RefThunkData.u1;
@@ -747,7 +768,6 @@
/* Load the image */
Status = WinLdrLoadImage(FullDllName, LoaderBootDriver, &BasePA);
-
if (!Status)
{
ERR("WinLdrLoadImage() failed\n");
@@ -760,7 +780,6 @@
FullDllName,
BasePA,
DataTableEntry);
-
if (!Status)
{
ERR("WinLdrAllocateDataTableEntry() failed with Status=0x%X\n",
Status);
@@ -771,7 +790,6 @@
TRACE("WinLdrScanImportDescriptorTable() calling ourselves for %S\n",
VaToPa((*DataTableEntry)->BaseDllName.Buffer));
Status = WinLdrScanImportDescriptorTable(ModuleListHead, DirectoryPath,
*DataTableEntry);
-
if (!Status)
{
ERR("WinLdrScanImportDescriptorTable() failed with
Status=0x%X\n", Status);
@@ -785,7 +803,8 @@
WinLdrpScanImportAddressTable(IN OUT PLIST_ENTRY ModuleListHead,
IN PVOID DllBase,
IN PVOID ImageBase,
- IN PIMAGE_THUNK_DATA ThunkData)
+ IN PIMAGE_THUNK_DATA ThunkData,
+ IN PCSTR DirectoryPath)
{
PIMAGE_EXPORT_DIRECTORY ExportDirectory = NULL;
BOOLEAN Status;
@@ -829,7 +848,8 @@
ThunkData,
ExportDirectory,
ExportSize,
- FALSE);
+ FALSE,
+ DirectoryPath);
/* Move to the next entry */
ThunkData++;
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