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wine/loader/module.c
Alexandre Julliard 5980477dcc Fetch the exe module directly from the PDB instead of calling 
LdrGetDllHandle.
2003-04-05 05:13:33 +00:00

1112 lines
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/*
* Modules
*
* Copyright 1995 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "wine/port.h"
#include <assert.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "wine/winbase16.h"
#include "winerror.h"
#include "winternl.h"
#include "heap.h"
#include "file.h"
#include "module.h"
#include "wine/debug.h"
#include "wine/unicode.h"
#include "wine/server.h"
WINE_DEFAULT_DEBUG_CHANNEL(module);
WINE_DECLARE_DEBUG_CHANNEL(win32);
WINE_DECLARE_DEBUG_CHANNEL(loaddll);
inline static HMODULE get_exe_module(void)
{
HANDLE *pdb = (HANDLE *)NtCurrentTeb()->process;
return pdb[0x08 / sizeof(HANDLE)]; /* get dword at offset 0x08 in pdb */
}
/***********************************************************************
* wait_input_idle
*
* Wrapper to call WaitForInputIdle USER function
*/
typedef DWORD (WINAPI *WaitForInputIdle_ptr)( HANDLE hProcess, DWORD dwTimeOut );
static DWORD wait_input_idle( HANDLE process, DWORD timeout )
{
HMODULE mod = GetModuleHandleA( "user32.dll" );
if (mod)
{
WaitForInputIdle_ptr ptr = (WaitForInputIdle_ptr)GetProcAddress( mod, "WaitForInputIdle" );
if (ptr) return ptr( process, timeout );
}
return 0;
}
/****************************************************************************
* DisableThreadLibraryCalls (KERNEL32.@)
*
* Don't call DllEntryPoint for DLL_THREAD_{ATTACH,DETACH} if set.
*/
BOOL WINAPI DisableThreadLibraryCalls( HMODULE hModule )
{
NTSTATUS nts = LdrDisableThreadCalloutsForDll( hModule );
if (nts == STATUS_SUCCESS) return TRUE;
SetLastError( RtlNtStatusToDosError( nts ) );
return FALSE;
}
/***********************************************************************
* MODULE_CreateDummyModule
*
* Create a dummy NE module for Win32 or Winelib.
*/
HMODULE16 MODULE_CreateDummyModule( LPCSTR filename, HMODULE module32 )
{
HMODULE16 hModule;
NE_MODULE *pModule;
SEGTABLEENTRY *pSegment;
char *pStr,*s;
unsigned int len;
const char* basename;
OFSTRUCT *ofs;
int of_size, size;
/* Extract base filename */
basename = strrchr(filename, '\\');
if (!basename) basename = filename;
else basename++;
len = strlen(basename);
if ((s = strchr(basename, '.'))) len = s - basename;
/* Allocate module */
of_size = sizeof(OFSTRUCT) - sizeof(ofs->szPathName)
+ strlen(filename) + 1;
size = sizeof(NE_MODULE) +
/* loaded file info */
((of_size + 3) & ~3) +
/* segment table: DS,CS */
2 * sizeof(SEGTABLEENTRY) +
/* name table */
len + 2 +
/* several empty tables */
8;
hModule = GlobalAlloc16( GMEM_MOVEABLE | GMEM_ZEROINIT, size );
if (!hModule) return (HMODULE16)11; /* invalid exe */
FarSetOwner16( hModule, hModule );
pModule = (NE_MODULE *)GlobalLock16( hModule );
/* Set all used entries */
pModule->magic = IMAGE_OS2_SIGNATURE;
pModule->count = 1;
pModule->next = 0;
pModule->flags = 0;
pModule->dgroup = 0;
pModule->ss = 1;
pModule->cs = 2;
pModule->heap_size = 0;
pModule->stack_size = 0;
pModule->seg_count = 2;
pModule->modref_count = 0;
pModule->nrname_size = 0;
pModule->fileinfo = sizeof(NE_MODULE);
pModule->os_flags = NE_OSFLAGS_WINDOWS;
pModule->self = hModule;
pModule->module32 = module32;
/* Set version and flags */
if (module32)
{
IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module32 );
pModule->expected_version = ((nt->OptionalHeader.MajorSubsystemVersion & 0xff) << 8 ) |
(nt->OptionalHeader.MinorSubsystemVersion & 0xff);
pModule->flags |= NE_FFLAGS_WIN32;
if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL)
pModule->flags |= NE_FFLAGS_LIBMODULE | NE_FFLAGS_SINGLEDATA;
}
/* Set loaded file information */
ofs = (OFSTRUCT *)(pModule + 1);
memset( ofs, 0, of_size );
ofs->cBytes = of_size < 256 ? of_size : 255; /* FIXME */
strcpy( ofs->szPathName, filename );
pSegment = (SEGTABLEENTRY*)((char*)(pModule + 1) + ((of_size + 3) & ~3));
pModule->seg_table = (int)pSegment - (int)pModule;
/* Data segment */
pSegment->size = 0;
pSegment->flags = NE_SEGFLAGS_DATA;
pSegment->minsize = 0x1000;
pSegment++;
/* Code segment */
pSegment->flags = 0;
pSegment++;
/* Module name */
pStr = (char *)pSegment;
pModule->name_table = (int)pStr - (int)pModule;
assert(len<256);
*pStr = len;
lstrcpynA( pStr+1, basename, len+1 );
pStr += len+2;
/* All tables zero terminated */
pModule->res_table = pModule->import_table = pModule->entry_table =
(int)pStr - (int)pModule;
NE_RegisterModule( pModule );
return hModule;
}
/* Check whether a file is an OS/2 or a very old Windows executable
* by testing on import of KERNEL.
*
* FIXME: is reading the module imports the only way of discerning
* old Windows binaries from OS/2 ones ? At least it seems so...
*/
static enum binary_type MODULE_Decide_OS2_OldWin(HANDLE hfile, const IMAGE_DOS_HEADER *mz,
const IMAGE_OS2_HEADER *ne)
{
DWORD currpos = SetFilePointer( hfile, 0, NULL, SEEK_CUR);
enum binary_type ret = BINARY_OS216;
LPWORD modtab = NULL;
LPSTR nametab = NULL;
DWORD len;
int i;
/* read modref table */
if ( (SetFilePointer( hfile, mz->e_lfanew + ne->ne_modtab, NULL, SEEK_SET ) == -1)
|| (!(modtab = HeapAlloc( GetProcessHeap(), 0, ne->ne_cmod*sizeof(WORD))))
|| (!(ReadFile(hfile, modtab, ne->ne_cmod*sizeof(WORD), &len, NULL)))
|| (len != ne->ne_cmod*sizeof(WORD)) )
goto broken;
/* read imported names table */
if ( (SetFilePointer( hfile, mz->e_lfanew + ne->ne_imptab, NULL, SEEK_SET ) == -1)
|| (!(nametab = HeapAlloc( GetProcessHeap(), 0, ne->ne_enttab - ne->ne_imptab)))
|| (!(ReadFile(hfile, nametab, ne->ne_enttab - ne->ne_imptab, &len, NULL)))
|| (len != ne->ne_enttab - ne->ne_imptab) )
goto broken;
for (i=0; i < ne->ne_cmod; i++)
{
LPSTR module = &nametab[modtab[i]];
TRACE("modref: %.*s\n", module[0], &module[1]);
if (!(strncmp(&module[1], "KERNEL", module[0])))
{ /* very old Windows file */
MESSAGE("This seems to be a very old (pre-3.0) Windows executable. Expect crashes, especially if this is a real-mode binary !\n");
ret = BINARY_WIN16;
goto good;
}
}
broken:
ERR("Hmm, an error occurred. Is this binary file broken ?\n");
good:
HeapFree( GetProcessHeap(), 0, modtab);
HeapFree( GetProcessHeap(), 0, nametab);
SetFilePointer( hfile, currpos, NULL, SEEK_SET); /* restore filepos */
return ret;
}
/***********************************************************************
* MODULE_GetBinaryType
*/
enum binary_type MODULE_GetBinaryType( HANDLE hfile )
{
union
{
struct
{
unsigned char magic[4];
unsigned char ignored[12];
unsigned short type;
} elf;
IMAGE_DOS_HEADER mz;
} header;
char magic[4];
DWORD len;
/* Seek to the start of the file and read the header information. */
if (SetFilePointer( hfile, 0, NULL, SEEK_SET ) == -1)
return BINARY_UNKNOWN;
if (!ReadFile( hfile, &header, sizeof(header), &len, NULL ) || len != sizeof(header))
return BINARY_UNKNOWN;
if (!memcmp( header.elf.magic, "\177ELF", 4 ))
{
/* FIXME: we don't bother to check byte order, architecture, etc. */
switch(header.elf.type)
{
case 2: return BINARY_UNIX_EXE;
case 3: return BINARY_UNIX_LIB;
}
return BINARY_UNKNOWN;
}
/* Not ELF, try DOS */
if (header.mz.e_magic == IMAGE_DOS_SIGNATURE)
{
/* We do have a DOS image so we will now try to seek into
* the file by the amount indicated by the field
* "Offset to extended header" and read in the
* "magic" field information at that location.
* This will tell us if there is more header information
* to read or not.
*/
/* But before we do we will make sure that header
* structure encompasses the "Offset to extended header"
* field.
*/
if ((header.mz.e_cparhdr << 4) < sizeof(IMAGE_DOS_HEADER))
return BINARY_DOS;
if (header.mz.e_crlc && (header.mz.e_lfarlc < sizeof(IMAGE_DOS_HEADER)))
return BINARY_DOS;
if (header.mz.e_lfanew < sizeof(IMAGE_DOS_HEADER))
return BINARY_DOS;
if (SetFilePointer( hfile, header.mz.e_lfanew, NULL, SEEK_SET ) == -1)
return BINARY_DOS;
if (!ReadFile( hfile, magic, sizeof(magic), &len, NULL ) || len != sizeof(magic))
return BINARY_DOS;
/* Reading the magic field succeeded so
* we will try to determine what type it is.
*/
if (!memcmp( magic, "PE\0\0", 4 ))
{
IMAGE_FILE_HEADER FileHeader;
if (ReadFile( hfile, &FileHeader, sizeof(FileHeader), &len, NULL ) && len == sizeof(FileHeader))
{
if (FileHeader.Characteristics & IMAGE_FILE_DLL) return BINARY_PE_DLL;
return BINARY_PE_EXE;
}
return BINARY_DOS;
}
if (!memcmp( magic, "NE", 2 ))
{
/* This is a Windows executable (NE) header. This can
* mean either a 16-bit OS/2 or a 16-bit Windows or even a
* DOS program (running under a DOS extender). To decide
* which, we'll have to read the NE header.
*/
IMAGE_OS2_HEADER ne;
if ( SetFilePointer( hfile, header.mz.e_lfanew, NULL, SEEK_SET ) != -1
&& ReadFile( hfile, &ne, sizeof(ne), &len, NULL )
&& len == sizeof(ne) )
{
switch ( ne.ne_exetyp )
{
case 2: return BINARY_WIN16;
case 5: return BINARY_DOS;
default: return MODULE_Decide_OS2_OldWin(hfile, &header.mz, &ne);
}
}
/* Couldn't read header, so abort. */
return BINARY_DOS;
}
/* Unknown extended header, but this file is nonetheless DOS-executable. */
return BINARY_DOS;
}
return BINARY_UNKNOWN;
}
/***********************************************************************
* GetBinaryTypeA [KERNEL32.@]
* GetBinaryType [KERNEL32.@]
*
* The GetBinaryType function determines whether a file is executable
* or not and if it is it returns what type of executable it is.
* The type of executable is a property that determines in which
* subsystem an executable file runs under.
*
* Binary types returned:
* SCS_32BIT_BINARY: A Win32 based application
* SCS_DOS_BINARY: An MS-Dos based application
* SCS_WOW_BINARY: A Win16 based application
* SCS_PIF_BINARY: A PIF file that executes an MS-Dos based app
* SCS_POSIX_BINARY: A POSIX based application ( Not implemented )
* SCS_OS216_BINARY: A 16bit OS/2 based application
*
* Returns TRUE if the file is an executable in which case
* the value pointed by lpBinaryType is set.
* Returns FALSE if the file is not an executable or if the function fails.
*
* To do so it opens the file and reads in the header information
* if the extended header information is not present it will
* assume that the file is a DOS executable.
* If the extended header information is present it will
* determine if the file is a 16 or 32 bit Windows executable
* by check the flags in the header.
*
* Note that .COM and .PIF files are only recognized by their
* file name extension; but Windows does it the same way ...
*/
BOOL WINAPI GetBinaryTypeA( LPCSTR lpApplicationName, LPDWORD lpBinaryType )
{
BOOL ret = FALSE;
HANDLE hfile;
char *ptr;
TRACE_(win32)("%s\n", lpApplicationName );
/* Sanity check.
*/
if ( lpApplicationName == NULL || lpBinaryType == NULL )
return FALSE;
/* Open the file indicated by lpApplicationName for reading.
*/
hfile = CreateFileA( lpApplicationName, GENERIC_READ, FILE_SHARE_READ,
NULL, OPEN_EXISTING, 0, 0 );
if ( hfile == INVALID_HANDLE_VALUE )
return FALSE;
/* Check binary type
*/
switch(MODULE_GetBinaryType( hfile ))
{
case BINARY_UNKNOWN:
/* try to determine from file name */
ptr = strrchr( lpApplicationName, '.' );
if (!ptr) break;
if (!FILE_strcasecmp( ptr, ".COM" ))
{
*lpBinaryType = SCS_DOS_BINARY;
ret = TRUE;
}
else if (!FILE_strcasecmp( ptr, ".PIF" ))
{
*lpBinaryType = SCS_PIF_BINARY;
ret = TRUE;
}
break;
case BINARY_PE_EXE:
case BINARY_PE_DLL:
*lpBinaryType = SCS_32BIT_BINARY;
ret = TRUE;
break;
case BINARY_WIN16:
*lpBinaryType = SCS_WOW_BINARY;
ret = TRUE;
break;
case BINARY_OS216:
*lpBinaryType = SCS_OS216_BINARY;
ret = TRUE;
break;
case BINARY_DOS:
*lpBinaryType = SCS_DOS_BINARY;
ret = TRUE;
break;
case BINARY_UNIX_EXE:
case BINARY_UNIX_LIB:
ret = FALSE;
break;
}
CloseHandle( hfile );
return ret;
}
/***********************************************************************
* GetBinaryTypeW [KERNEL32.@]
*/
BOOL WINAPI GetBinaryTypeW( LPCWSTR lpApplicationName, LPDWORD lpBinaryType )
{
BOOL ret = FALSE;
LPSTR strNew = NULL;
TRACE_(win32)("%s\n", debugstr_w(lpApplicationName) );
/* Sanity check.
*/
if ( lpApplicationName == NULL || lpBinaryType == NULL )
return FALSE;
/* Convert the wide string to a ascii string.
*/
strNew = HEAP_strdupWtoA( GetProcessHeap(), 0, lpApplicationName );
if ( strNew != NULL )
{
ret = GetBinaryTypeA( strNew, lpBinaryType );
/* Free the allocated string.
*/
HeapFree( GetProcessHeap(), 0, strNew );
}
return ret;
}
/***********************************************************************
* WinExec (KERNEL.166)
*/
HINSTANCE16 WINAPI WinExec16( LPCSTR lpCmdLine, UINT16 nCmdShow )
{
LPCSTR p, args = NULL;
LPCSTR name_beg, name_end;
LPSTR name, cmdline;
int arglen;
HINSTANCE16 ret;
char buffer[MAX_PATH];
if (*lpCmdLine == '"') /* has to be only one and only at beginning ! */
{
name_beg = lpCmdLine+1;
p = strchr ( lpCmdLine+1, '"' );
if (p)
{
name_end = p;
args = strchr ( p, ' ' );
}
else /* yes, even valid with trailing '"' missing */
name_end = lpCmdLine+strlen(lpCmdLine);
}
else
{
name_beg = lpCmdLine;
args = strchr( lpCmdLine, ' ' );
name_end = args ? args : lpCmdLine+strlen(lpCmdLine);
}
if ((name_beg == lpCmdLine) && (!args))
{ /* just use the original cmdline string as file name */
name = (LPSTR)lpCmdLine;
}
else
{
if (!(name = HeapAlloc( GetProcessHeap(), 0, name_end - name_beg + 1 )))
return ERROR_NOT_ENOUGH_MEMORY;
memcpy( name, name_beg, name_end - name_beg );
name[name_end - name_beg] = '\0';
}
if (args)
{
args++;
arglen = strlen(args);
cmdline = HeapAlloc( GetProcessHeap(), 0, 2 + arglen );
cmdline[0] = (BYTE)arglen;
strcpy( cmdline + 1, args );
}
else
{
cmdline = HeapAlloc( GetProcessHeap(), 0, 2 );
cmdline[0] = cmdline[1] = 0;
}
TRACE("name: '%s', cmdline: '%.*s'\n", name, cmdline[0], &cmdline[1]);
if (SearchPathA( NULL, name, ".exe", sizeof(buffer), buffer, NULL ))
{
LOADPARAMS16 params;
WORD showCmd[2];
showCmd[0] = 2;
showCmd[1] = nCmdShow;
params.hEnvironment = 0;
params.cmdLine = MapLS( cmdline );
params.showCmd = MapLS( showCmd );
params.reserved = 0;
ret = LoadModule16( buffer, &params );
UnMapLS( params.cmdLine );
UnMapLS( params.showCmd );
}
else ret = GetLastError();
HeapFree( GetProcessHeap(), 0, cmdline );
if (name != lpCmdLine) HeapFree( GetProcessHeap(), 0, name );
if (ret == 21) /* 32-bit module */
{
DWORD count;
ReleaseThunkLock( &count );
ret = LOWORD( WinExec( lpCmdLine, nCmdShow ) );
RestoreThunkLock( count );
}
return ret;
}
/***********************************************************************
* WinExec (KERNEL32.@)
*/
UINT WINAPI WinExec( LPCSTR lpCmdLine, UINT nCmdShow )
{
PROCESS_INFORMATION info;
STARTUPINFOA startup;
char *cmdline;
UINT ret;
memset( &startup, 0, sizeof(startup) );
startup.cb = sizeof(startup);
startup.dwFlags = STARTF_USESHOWWINDOW;
startup.wShowWindow = nCmdShow;
/* cmdline needs to be writeable for CreateProcess */
if (!(cmdline = HeapAlloc( GetProcessHeap(), 0, strlen(lpCmdLine)+1 ))) return 0;
strcpy( cmdline, lpCmdLine );
if (CreateProcessA( NULL, cmdline, NULL, NULL, FALSE,
0, NULL, NULL, &startup, &info ))
{
/* Give 30 seconds to the app to come up */
if (wait_input_idle( info.hProcess, 30000 ) == 0xFFFFFFFF)
WARN("WaitForInputIdle failed: Error %ld\n", GetLastError() );
ret = 33;
/* Close off the handles */
CloseHandle( info.hThread );
CloseHandle( info.hProcess );
}
else if ((ret = GetLastError()) >= 32)
{
FIXME("Strange error set by CreateProcess: %d\n", ret );
ret = 11;
}
HeapFree( GetProcessHeap(), 0, cmdline );
return ret;
}
/**********************************************************************
* LoadModule (KERNEL32.@)
*/
HINSTANCE WINAPI LoadModule( LPCSTR name, LPVOID paramBlock )
{
LOADPARAMS *params = (LOADPARAMS *)paramBlock;
PROCESS_INFORMATION info;
STARTUPINFOA startup;
HINSTANCE hInstance;
LPSTR cmdline, p;
char filename[MAX_PATH];
BYTE len;
if (!name) return (HINSTANCE)ERROR_FILE_NOT_FOUND;
if (!SearchPathA( NULL, name, ".exe", sizeof(filename), filename, NULL ) &&
!SearchPathA( NULL, name, NULL, sizeof(filename), filename, NULL ))
return (HINSTANCE)GetLastError();
len = (BYTE)params->lpCmdLine[0];
if (!(cmdline = HeapAlloc( GetProcessHeap(), 0, strlen(filename) + len + 2 )))
return (HINSTANCE)ERROR_NOT_ENOUGH_MEMORY;
strcpy( cmdline, filename );
p = cmdline + strlen(cmdline);
*p++ = ' ';
memcpy( p, params->lpCmdLine + 1, len );
p[len] = 0;
memset( &startup, 0, sizeof(startup) );
startup.cb = sizeof(startup);
if (params->lpCmdShow)
{
startup.dwFlags = STARTF_USESHOWWINDOW;
startup.wShowWindow = params->lpCmdShow[1];
}
if (CreateProcessA( filename, cmdline, NULL, NULL, FALSE, 0,
params->lpEnvAddress, NULL, &startup, &info ))
{
/* Give 30 seconds to the app to come up */
if (wait_input_idle( info.hProcess, 30000 ) == 0xFFFFFFFF )
WARN("WaitForInputIdle failed: Error %ld\n", GetLastError() );
hInstance = (HINSTANCE)33;
/* Close off the handles */
CloseHandle( info.hThread );
CloseHandle( info.hProcess );
}
else if ((hInstance = (HINSTANCE)GetLastError()) >= (HINSTANCE)32)
{
FIXME("Strange error set by CreateProcess: %p\n", hInstance );
hInstance = (HINSTANCE)11;
}
HeapFree( GetProcessHeap(), 0, cmdline );
return hInstance;
}
/***********************************************************************
* GetModuleHandleA (KERNEL32.@)
* GetModuleHandle32 (KERNEL.488)
*/
HMODULE WINAPI GetModuleHandleA(LPCSTR module)
{
NTSTATUS nts;
HMODULE ret;
UNICODE_STRING wstr;
if (!module) return get_exe_module();
RtlCreateUnicodeStringFromAsciiz(&wstr, module);
nts = LdrGetDllHandle(0, 0, &wstr, &ret);
RtlFreeUnicodeString( &wstr );
if (nts != STATUS_SUCCESS)
{
ret = 0;
SetLastError( RtlNtStatusToDosError( nts ) );
}
return ret;
}
/***********************************************************************
* GetModuleHandleW (KERNEL32.@)
*/
HMODULE WINAPI GetModuleHandleW(LPCWSTR module)
{
NTSTATUS nts;
HMODULE ret;
UNICODE_STRING wstr;
if (!module) return get_exe_module();
RtlInitUnicodeString( &wstr, module );
nts = LdrGetDllHandle( 0, 0, &wstr, &ret);
if (nts != STATUS_SUCCESS)
{
SetLastError( RtlNtStatusToDosError( nts ) );
ret = 0;
}
return ret;
}
/***********************************************************************
* GetModuleFileNameA (KERNEL32.@)
* GetModuleFileName32 (KERNEL.487)
*
* GetModuleFileNameA seems to *always* return the long path;
* it's only GetModuleFileName16 that decides between short/long path
* by checking if exe version >= 4.0.
* (SDK docu doesn't mention this)
*/
DWORD WINAPI GetModuleFileNameA(
HMODULE hModule, /* [in] module handle (32bit) */
LPSTR lpFileName, /* [out] filenamebuffer */
DWORD size ) /* [in] size of filenamebuffer */
{
LPWSTR filenameW = HeapAlloc( GetProcessHeap(), 0, size * sizeof(WCHAR) );
if (!filenameW)
{
SetLastError( ERROR_NOT_ENOUGH_MEMORY );
return 0;
}
GetModuleFileNameW( hModule, filenameW, size );
WideCharToMultiByte( CP_ACP, 0, filenameW, -1, lpFileName, size, NULL, NULL );
HeapFree( GetProcessHeap(), 0, filenameW );
return strlen( lpFileName );
}
/***********************************************************************
* GetModuleFileNameW (KERNEL32.@)
*/
DWORD WINAPI GetModuleFileNameW( HMODULE hModule, LPWSTR lpFileName, DWORD size )
{
ULONG magic;
lpFileName[0] = 0;
LdrLockLoaderLock( 0, NULL, &magic );
if (!hModule && !(NtCurrentTeb()->tibflags & TEBF_WIN32))
{
/* 16-bit task - get current NE module name */
NE_MODULE *pModule = NE_GetPtr( GetCurrentTask() );
if (pModule)
{
WCHAR path[MAX_PATH];
MultiByteToWideChar( CP_ACP, 0, NE_MODULE_NAME(pModule), -1, path, MAX_PATH );
GetLongPathNameW(path, lpFileName, size);
}
}
else
{
LDR_MODULE* pldr;
NTSTATUS nts;
if (!hModule) hModule = get_exe_module();
nts = LdrFindEntryForAddress( hModule, &pldr );
if (nts == STATUS_SUCCESS) lstrcpynW(lpFileName, pldr->FullDllName.Buffer, size);
else SetLastError( RtlNtStatusToDosError( nts ) );
}
LdrUnlockLoaderLock( 0, magic );
TRACE( "%s\n", debugstr_w(lpFileName) );
return strlenW(lpFileName);
}
/******************************************************************
* load_library_as_datafile
*/
static BOOL load_library_as_datafile( LPCWSTR name, HMODULE* hmod)
{
static const WCHAR dotDLL[] = {'.','d','l','l',0};
WCHAR filenameW[MAX_PATH];
HANDLE hFile = INVALID_HANDLE_VALUE;
HANDLE mapping;
*hmod = 0;
if (SearchPathW( NULL, (LPCWSTR)name, dotDLL, sizeof(filenameW) / sizeof(filenameW[0]),
filenameW, NULL ))
{
hFile = CreateFileW( filenameW, GENERIC_READ, FILE_SHARE_READ,
NULL, OPEN_EXISTING, 0, 0 );
}
if (hFile == INVALID_HANDLE_VALUE) return FALSE;
switch (MODULE_GetBinaryType( hFile ))
{
case BINARY_PE_EXE:
case BINARY_PE_DLL:
mapping = CreateFileMappingW( hFile, NULL, PAGE_READONLY, 0, 0, NULL );
if (mapping)
{
*hmod = MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 );
CloseHandle( mapping );
}
break;
default:
break;
}
CloseHandle( hFile );
return *hmod != 0;
}
/******************************************************************
* LoadLibraryExA (KERNEL32.@)
*
* The HFILE parameter is not used and marked reserved in the SDK. I can
* only guess that it should force a file to be mapped, but I rather
* ignore the parameter because it would be extremely difficult to
* integrate this with different types of module representations.
*
*/
HMODULE WINAPI LoadLibraryExA(LPCSTR libname, HANDLE hfile, DWORD flags)
{
UNICODE_STRING wstr;
NTSTATUS nts;
HMODULE hModule;
if (!libname)
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
RtlCreateUnicodeStringFromAsciiz( &wstr, libname );
if (flags & LOAD_LIBRARY_AS_DATAFILE)
{
/* The method in load_library_as_datafile allows searching for the
* 'native' libraries only
*/
if (load_library_as_datafile( wstr.Buffer, &hModule))
{
RtlFreeUnicodeString( &wstr );
return (HMODULE)((ULONG_PTR)hModule + 1);
}
flags |= DONT_RESOLVE_DLL_REFERENCES; /* Just in case */
/* Fallback to normal behaviour */
}
nts = LdrLoadDll(NULL, flags, &wstr, &hModule);
if (nts != STATUS_SUCCESS)
{
hModule = 0;
SetLastError( RtlNtStatusToDosError( nts ) );
}
RtlFreeUnicodeString( &wstr );
return hModule;
}
/***********************************************************************
* LoadLibraryExW (KERNEL32.@)
*/
HMODULE WINAPI LoadLibraryExW(LPCWSTR libnameW, HANDLE hfile, DWORD flags)
{
UNICODE_STRING wstr;
NTSTATUS nts;
HMODULE hModule;
if (!libnameW)
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
if (flags & LOAD_LIBRARY_AS_DATAFILE)
{
/* The method in load_library_as_datafile allows searching for the
* 'native' libraries only
*/
if (load_library_as_datafile(libnameW, &hModule))
return (HMODULE)((ULONG_PTR)hModule + 1);
flags |= DONT_RESOLVE_DLL_REFERENCES; /* Just in case */
/* Fallback to normal behaviour */
}
RtlInitUnicodeString( &wstr, libnameW );
nts = LdrLoadDll(NULL, flags, &wstr, &hModule);
if (nts != STATUS_SUCCESS)
{
hModule = 0;
SetLastError( RtlNtStatusToDosError( nts ) );
}
return hModule;
}
/***********************************************************************
* LoadLibraryA (KERNEL32.@)
*/
HMODULE WINAPI LoadLibraryA(LPCSTR libname)
{
return LoadLibraryExA(libname, 0, 0);
}
/***********************************************************************
* LoadLibraryW (KERNEL32.@)
*/
HMODULE WINAPI LoadLibraryW(LPCWSTR libnameW)
{
return LoadLibraryExW(libnameW, 0, 0);
}
/***********************************************************************
* LoadLibrary32 (KERNEL.452)
* LoadSystemLibrary32 (KERNEL.482)
*/
HMODULE WINAPI LoadLibrary32_16( LPCSTR libname )
{
HMODULE hModule;
DWORD count;
ReleaseThunkLock( &count );
hModule = LoadLibraryA( libname );
RestoreThunkLock( count );
return hModule;
}
/***********************************************************************
* FreeLibrary (KERNEL32.@)
* FreeLibrary32 (KERNEL.486)
*/
BOOL WINAPI FreeLibrary(HINSTANCE hLibModule)
{
BOOL retv = FALSE;
NTSTATUS nts;
if (!hLibModule)
{
SetLastError( ERROR_INVALID_HANDLE );
return FALSE;
}
if ((ULONG_PTR)hLibModule & 1)
{
/* this is a LOAD_LIBRARY_AS_DATAFILE module */
char *ptr = (char *)hLibModule - 1;
UnmapViewOfFile( ptr );
return TRUE;
}
if ((nts = LdrUnloadDll( hLibModule )) == STATUS_SUCCESS) retv = TRUE;
else SetLastError( RtlNtStatusToDosError( nts ) );
return retv;
}
/***********************************************************************
* FreeLibraryAndExitThread (KERNEL32.@)
*/
VOID WINAPI FreeLibraryAndExitThread(HINSTANCE hLibModule, DWORD dwExitCode)
{
FreeLibrary(hLibModule);
ExitThread(dwExitCode);
}
/***********************************************************************
* PrivateLoadLibrary (KERNEL32.@)
*
* FIXME: rough guesswork, don't know what "Private" means
*/
HINSTANCE16 WINAPI PrivateLoadLibrary(LPCSTR libname)
{
return LoadLibrary16(libname);
}
/***********************************************************************
* PrivateFreeLibrary (KERNEL32.@)
*
* FIXME: rough guesswork, don't know what "Private" means
*/
void WINAPI PrivateFreeLibrary(HINSTANCE16 handle)
{
FreeLibrary16(handle);
}
/***********************************************************************
* GetProcAddress16 (KERNEL32.37)
* Get procaddress in 16bit module from win32... (kernel32 undoc. ordinal func)
*/
FARPROC16 WINAPI WIN32_GetProcAddress16( HMODULE hModule, LPCSTR name )
{
if (!hModule) {
WARN("hModule may not be 0!\n");
return (FARPROC16)0;
}
if (HIWORD(hModule))
{
WARN("hModule is Win32 handle (%p)\n", hModule );
return (FARPROC16)0;
}
return GetProcAddress16( LOWORD(hModule), name );
}
/***********************************************************************
* GetProcAddress (KERNEL.50)
*/
FARPROC16 WINAPI GetProcAddress16( HMODULE16 hModule, LPCSTR name )
{
WORD ordinal;
FARPROC16 ret;
if (!hModule) hModule = GetCurrentTask();
hModule = GetExePtr( hModule );
if (HIWORD(name) != 0)
{
ordinal = NE_GetOrdinal( hModule, name );
TRACE("%04x '%s'\n", hModule, name );
}
else
{
ordinal = LOWORD(name);
TRACE("%04x %04x\n", hModule, ordinal );
}
if (!ordinal) return (FARPROC16)0;
ret = NE_GetEntryPoint( hModule, ordinal );
TRACE("returning %08x\n", (UINT)ret );
return ret;
}
/***********************************************************************
* GetProcAddress (KERNEL32.@)
*/
FARPROC WINAPI GetProcAddress( HMODULE hModule, LPCSTR function )
{
NTSTATUS nts;
FARPROC fp;
if (HIWORD(function))
{
ANSI_STRING str;
RtlInitAnsiString( &str, function );
nts = LdrGetProcedureAddress( hModule, &str, 0, (void**)&fp );
}
else
nts = LdrGetProcedureAddress( hModule, NULL, (DWORD)function, (void**)&fp );
if (nts != STATUS_SUCCESS)
{
SetLastError( RtlNtStatusToDosError( nts ) );
fp = NULL;
}
return fp;
}
/***********************************************************************
* GetProcAddress32 (KERNEL.453)
*/
FARPROC WINAPI GetProcAddress32_16( HMODULE hModule, LPCSTR function )
{
/* FIXME: we used to disable snoop when returning proc for Win16 subsystem */
return GetProcAddress( hModule, function );
}
/***************************************************************************
* HasGPHandler (KERNEL.338)
*/
#include "pshpack1.h"
typedef struct _GPHANDLERDEF
{
WORD selector;
WORD rangeStart;
WORD rangeEnd;
WORD handler;
} GPHANDLERDEF;
#include "poppack.h"
SEGPTR WINAPI HasGPHandler16( SEGPTR address )
{
HMODULE16 hModule;
int gpOrdinal;
SEGPTR gpPtr;
GPHANDLERDEF *gpHandler;
if ( (hModule = FarGetOwner16( SELECTOROF(address) )) != 0
&& (gpOrdinal = NE_GetOrdinal( hModule, "__GP" )) != 0
&& (gpPtr = (SEGPTR)NE_GetEntryPointEx( hModule, gpOrdinal, FALSE )) != 0
&& !IsBadReadPtr16( gpPtr, sizeof(GPHANDLERDEF) )
&& (gpHandler = MapSL( gpPtr )) != NULL )
{
while (gpHandler->selector)
{
if ( SELECTOROF(address) == gpHandler->selector
&& OFFSETOF(address) >= gpHandler->rangeStart
&& OFFSETOF(address) < gpHandler->rangeEnd )
return MAKESEGPTR( gpHandler->selector, gpHandler->handler );
gpHandler++;
}
}
return 0;
}
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