mirror of
https://github.com/reactos/reactos.git
synced 2024-09-29 14:09:10 +00:00
Implemented handling of forwarded exports
svn path=/trunk/; revision=1610
This commit is contained in:
Eric Kohl
parent
c87bd2d365
commit
41280eeeb5
|
|
@ -1,4 +1,4 @@
|
|||
/* $Id: utils.c,v 1.38 2001/02/06 05:50:50 dwelch Exp $
|
||||
/* $Id: utils.c,v 1.39 2001/02/10 10:04:39 ekohl Exp $
|
||||
*
|
||||
* COPYRIGHT: See COPYING in the top level directory
|
||||
* PROJECT: ReactOS kernel
|
||||
|
|
@ -45,9 +45,9 @@ STDCALL
|
|||
LPVOID lpReserved
|
||||
);
|
||||
|
||||
static
|
||||
NTSTATUS
|
||||
LdrFindDll (PLDR_MODULE *Dll,PUNICODE_STRING Name);
|
||||
static NTSTATUS LdrFindDll(PLDR_MODULE *Dll,PUNICODE_STRING Name);
|
||||
static PVOID LdrFixupForward(PCHAR ForwardName);
|
||||
static PVOID LdrGetExportByName(PVOID BaseAddress, PUCHAR SymbolName, USHORT Hint);
|
||||
|
||||
|
||||
/* FUNCTIONS *****************************************************************/
|
||||
|
|
@ -571,6 +571,66 @@ NTSTATUS LdrMapSections(HANDLE ProcessHandle,
|
|||
}
|
||||
|
||||
|
||||
/**********************************************************************
|
||||
* NAME LOCAL
|
||||
* LdrFixupForward
|
||||
*
|
||||
* DESCRIPTION
|
||||
*
|
||||
* ARGUMENTS
|
||||
*
|
||||
* RETURN VALUE
|
||||
*
|
||||
* REVISIONS
|
||||
*
|
||||
* NOTE
|
||||
*
|
||||
*/
|
||||
static PVOID
|
||||
LdrFixupForward(PCHAR ForwardName)
|
||||
{
|
||||
CHAR NameBuffer[128];
|
||||
UNICODE_STRING DllName;
|
||||
UNICODE_STRING FunctionName;
|
||||
NTSTATUS Status;
|
||||
PCHAR p;
|
||||
PVOID BaseAddress;
|
||||
|
||||
strcpy(NameBuffer, ForwardName);
|
||||
p = strchr(NameBuffer, '.');
|
||||
if (p != NULL)
|
||||
{
|
||||
*p = 0;
|
||||
|
||||
DPRINT("Dll: %s Function: %s\n", NameBuffer, p+1);
|
||||
RtlCreateUnicodeStringFromAsciiz (&DllName,
|
||||
NameBuffer);
|
||||
|
||||
Status = LdrGetDllHandle (0, 0, &DllName, &BaseAddress);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
Status = LdrLoadDll(NULL,
|
||||
0,
|
||||
&DllName,
|
||||
&BaseAddress);
|
||||
RtlFreeUnicodeString (&DllName);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
DbgPrint("LdrFixupForward: failed to load %wZ\n", &DllName);
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
RtlFreeUnicodeString (&DllName);
|
||||
DPRINT("BaseAddress: %p\n", BaseAddress);
|
||||
|
||||
return LdrGetExportByName(BaseAddress, p+1, -1);
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
/**********************************************************************
|
||||
* NAME LOCAL
|
||||
* LdrGetExportByOrdinal
|
||||
|
|
@ -638,89 +698,119 @@ LdrGetExportByOrdinal (
|
|||
*
|
||||
*/
|
||||
static PVOID
|
||||
LdrGetExportByName (PVOID BaseAddress, PUCHAR SymbolName, WORD Hint)
|
||||
LdrGetExportByName(PVOID BaseAddress,
|
||||
PUCHAR SymbolName,
|
||||
WORD Hint)
|
||||
{
|
||||
PIMAGE_EXPORT_DIRECTORY ExportDir;
|
||||
PDWORD * ExFunctions;
|
||||
PDWORD * ExNames;
|
||||
USHORT * ExOrdinals;
|
||||
ULONG i;
|
||||
PVOID ExName;
|
||||
ULONG Ordinal;
|
||||
ULONG minn, maxn;
|
||||
PIMAGE_EXPORT_DIRECTORY ExportDir;
|
||||
PDWORD * ExFunctions;
|
||||
PDWORD * ExNames;
|
||||
USHORT * ExOrdinals;
|
||||
ULONG i;
|
||||
PVOID ExName;
|
||||
ULONG Ordinal;
|
||||
PVOID Function;
|
||||
ULONG minn, maxn;
|
||||
ULONG ExportDirSize;
|
||||
|
||||
ExportDir = (PIMAGE_EXPORT_DIRECTORY)
|
||||
RtlImageDirectoryEntryToData (BaseAddress,
|
||||
DPRINT("LdrGetExportByName %x %s %hu\n", BaseAddress, SymbolName, Hint);
|
||||
|
||||
ExportDir = (PIMAGE_EXPORT_DIRECTORY)
|
||||
RtlImageDirectoryEntryToData(BaseAddress,
|
||||
TRUE,
|
||||
IMAGE_DIRECTORY_ENTRY_EXPORT,
|
||||
NULL);
|
||||
&ExportDirSize);
|
||||
|
||||
/*
|
||||
* Get header pointers
|
||||
*/
|
||||
ExNames = (PDWORD *)RVA(BaseAddress,
|
||||
ExportDir->AddressOfNames);
|
||||
ExOrdinals = (USHORT *)RVA(BaseAddress,
|
||||
ExportDir->AddressOfNameOrdinals);
|
||||
ExFunctions = (PDWORD *)RVA(BaseAddress,
|
||||
ExportDir->AddressOfFunctions);
|
||||
|
||||
/*
|
||||
* Check the hint first
|
||||
*/
|
||||
if (Hint < ExportDir->NumberOfFunctions)
|
||||
{
|
||||
ExName = RVA(BaseAddress, ExNames[Hint]);
|
||||
if (strcmp(ExName, SymbolName) == 0)
|
||||
{
|
||||
Ordinal = ExOrdinals[Hint];
|
||||
return(RVA(BaseAddress, ExFunctions[Ordinal]));
|
||||
}
|
||||
}
|
||||
/*
|
||||
* Get header pointers
|
||||
*/
|
||||
ExNames = (PDWORD *)RVA(BaseAddress,
|
||||
ExportDir->AddressOfNames);
|
||||
ExOrdinals = (USHORT *)RVA(BaseAddress,
|
||||
ExportDir->AddressOfNameOrdinals);
|
||||
ExFunctions = (PDWORD *)RVA(BaseAddress,
|
||||
ExportDir->AddressOfFunctions);
|
||||
|
||||
/*
|
||||
* Check the hint first
|
||||
*/
|
||||
if (Hint < ExportDir->NumberOfFunctions)
|
||||
{
|
||||
ExName = RVA(BaseAddress, ExNames[Hint]);
|
||||
if (strcmp(ExName, SymbolName) == 0)
|
||||
{
|
||||
Ordinal = ExOrdinals[Hint];
|
||||
Function = RVA(BaseAddress, ExFunctions[Ordinal]);
|
||||
if (((ULONG)Function >= (ULONG)ExportDir) &&
|
||||
((ULONG)Function < (ULONG)ExportDir + (ULONG)ExportDirSize))
|
||||
{
|
||||
DPRINT("Forward: %s\n", (PCHAR)Function);
|
||||
Function = LdrFixupForward((PCHAR)Function);
|
||||
}
|
||||
if (Function != NULL)
|
||||
return Function;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Try a binary search first
|
||||
*/
|
||||
minn = 0, maxn = ExportDir->NumberOfFunctions;
|
||||
while (minn <= maxn)
|
||||
{
|
||||
ULONG mid;
|
||||
LONG res;
|
||||
/*
|
||||
* Try a binary search first
|
||||
*/
|
||||
minn = 0, maxn = ExportDir->NumberOfFunctions;
|
||||
while (minn <= maxn)
|
||||
{
|
||||
ULONG mid;
|
||||
LONG res;
|
||||
|
||||
mid = (minn + maxn) / 2;
|
||||
mid = (minn + maxn) / 2;
|
||||
|
||||
ExName = RVA(BaseAddress, ExNames[mid]);
|
||||
res = strcmp(ExName, SymbolName);
|
||||
if (res == 0)
|
||||
{
|
||||
Ordinal = ExOrdinals[mid];
|
||||
return(RVA(BaseAddress, ExFunctions[Ordinal]));
|
||||
}
|
||||
else if (res > 0)
|
||||
{
|
||||
maxn = mid - 1;
|
||||
}
|
||||
else
|
||||
{
|
||||
minn = mid + 1;
|
||||
}
|
||||
}
|
||||
/*
|
||||
* Fall back on a linear search
|
||||
*/
|
||||
ExName = RVA(BaseAddress, ExNames[mid]);
|
||||
res = strcmp(ExName, SymbolName);
|
||||
if (res == 0)
|
||||
{
|
||||
Ordinal = ExOrdinals[mid];
|
||||
Function = RVA(BaseAddress, ExFunctions[Ordinal]);
|
||||
if (((ULONG)Function >= (ULONG)ExportDir) &&
|
||||
((ULONG)Function < (ULONG)ExportDir + (ULONG)ExportDirSize))
|
||||
{
|
||||
DPRINT("Forward: %s\n", (PCHAR)Function);
|
||||
Function = LdrFixupForward((PCHAR)Function);
|
||||
}
|
||||
if (Function != NULL)
|
||||
return Function;
|
||||
}
|
||||
else if (res > 0)
|
||||
{
|
||||
maxn = mid - 1;
|
||||
}
|
||||
else
|
||||
{
|
||||
minn = mid + 1;
|
||||
}
|
||||
}
|
||||
/*
|
||||
* Fall back on a linear search
|
||||
*/
|
||||
|
||||
DbgPrint("LDR: Falling back on a linear search of export table\n");
|
||||
for (i = 0; i < ExportDir->NumberOfFunctions; i++)
|
||||
{
|
||||
ExName = RVA(BaseAddress, ExNames[i]);
|
||||
if (strcmp(ExName,SymbolName) == 0)
|
||||
{
|
||||
Ordinal = ExOrdinals[i];
|
||||
return(RVA(BaseAddress, ExFunctions[Ordinal]));
|
||||
}
|
||||
}
|
||||
DbgPrint("LdrGetExportByName() = failed to find %s\n",SymbolName);
|
||||
return NULL;
|
||||
DbgPrint("LDR: Falling back on a linear search of export table\n");
|
||||
for (i = 0; i < ExportDir->NumberOfFunctions; i++)
|
||||
{
|
||||
ExName = RVA(BaseAddress, ExNames[i]);
|
||||
if (strcmp(ExName,SymbolName) == 0)
|
||||
{
|
||||
Ordinal = ExOrdinals[i];
|
||||
Function = RVA(BaseAddress, ExFunctions[Ordinal]);
|
||||
DPRINT("%x %x %x\n", Function, ExportDir, ExportDir + ExportDirSize);
|
||||
if (((ULONG)Function >= (ULONG)ExportDir) &&
|
||||
((ULONG)Function < (ULONG)ExportDir + (ULONG)ExportDirSize))
|
||||
{
|
||||
DPRINT("Forward: %s\n", (PCHAR)Function);
|
||||
Function = LdrFixupForward((PCHAR)Function);
|
||||
}
|
||||
return Function;
|
||||
}
|
||||
}
|
||||
DbgPrint("LdrGetExportByName() = failed to find %s\n",SymbolName);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -1474,9 +1564,8 @@ LdrGetDllHandle (IN ULONG Unknown1,
|
|||
{
|
||||
Module = CONTAINING_RECORD(Entry, LDR_MODULE, InLoadOrderModuleList);
|
||||
|
||||
DPRINT("EntryPoint %lu\n", Module->EntryPoint);
|
||||
|
||||
DPRINT("Scanning %wZ %wZ\n",
|
||||
DPRINT("EntryPoint %x\n", Module->EntryPoint);
|
||||
DPRINT("Comparing %wZ and %wZ\n",
|
||||
&Module->BaseDllName,
|
||||
&FullDllName);
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue