| /* |
| * 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 <fcntl.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #ifdef HAVE_SYS_TYPES_H |
| # include <sys/types.h> |
| #endif |
| #ifdef HAVE_UNISTD_H |
| # include <unistd.h> |
| #endif |
| #include "wine/winbase16.h" |
| #include "winerror.h" |
| #include "ntstatus.h" |
| #include "windef.h" |
| #include "winbase.h" |
| #include "winreg.h" |
| #include "winternl.h" |
| #include "thread.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(loaddll); |
| |
| |
| /**************************************************************************** |
| * DisableThreadLibraryCalls (KERNEL32.@) |
| * |
| * Inform the module loader that thread notifications are not required for a dll. |
| * |
| * PARAMS |
| * hModule [I] Module handle to skip calls for |
| * |
| * RETURNS |
| * Success: TRUE. Thread attach and detach notifications will not be sent |
| * to hModule. |
| * Failure: FALSE. Use GetLastError() to determine the cause. |
| * |
| * NOTES |
| * This is typically called from the dll entry point of a dll during process |
| * attachment, for dlls that do not need to process thread notifications. |
| */ |
| BOOL WINAPI DisableThreadLibraryCalls( HMODULE hModule ) |
| { |
| NTSTATUS nts = LdrDisableThreadCalloutsForDll( hModule ); |
| if (nts == STATUS_SUCCESS) return TRUE; |
| |
| SetLastError( RtlNtStatusToDosError( nts ) ); |
| return FALSE; |
| } |
| |
| |
| /* 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; |
| struct |
| { |
| unsigned long magic; |
| unsigned long cputype; |
| unsigned long cpusubtype; |
| unsigned long filetype; |
| } macho; |
| 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; |
| } |
| |
| /* Mach-o File with Endian set to Big Endian or Little Endian*/ |
| if (header.macho.magic == 0xfeedface || header.macho.magic == 0xecafdeef) |
| { |
| switch(header.macho.filetype) |
| { |
| case 0x8: /* MH_BUNDLE */ 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_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; |
| } |
| |
| /*********************************************************************** |
| * GetBinaryTypeW [KERNEL32.@] |
| * |
| * Determine whether a file is executable, and if so, what kind. |
| * |
| * PARAMS |
| * lpApplicationName [I] Path of the file to check |
| * lpBinaryType [O] Destination for the binary type |
| * |
| * RETURNS |
| * TRUE, if the file is an executable, in which case lpBinaryType is set. |
| * FALSE, if the file is not an executable or if the function fails. |
| * |
| * NOTES |
| * The type of executable is a property that determines which subsytem an |
| * executable file runs under. lpBinaryType can be set to one of the following |
| * values: |
| * 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 |
| * |
| * To find the binary type, this function reads in the files header information. |
| * If extended header information is not present it will assume that the file |
| * is a DOS executable. If extended header information is present it will |
| * determine if the file is a 16 or 32 bit Windows executable by checking the |
| * flags in the header. |
| * |
| * ".com" and ".pif" files are only recognized by their file name extension, |
| * as per native Windows. |
| */ |
| BOOL WINAPI GetBinaryTypeW( LPCWSTR lpApplicationName, LPDWORD lpBinaryType ) |
| { |
| BOOL ret = FALSE; |
| HANDLE hfile; |
| |
| TRACE("%s\n", debugstr_w(lpApplicationName) ); |
| |
| /* Sanity check. |
| */ |
| if ( lpApplicationName == NULL || lpBinaryType == NULL ) |
| return FALSE; |
| |
| /* Open the file indicated by lpApplicationName for reading. |
| */ |
| hfile = CreateFileW( 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: |
| { |
| static const WCHAR comW[] = { '.','C','O','M',0 }; |
| static const WCHAR pifW[] = { '.','P','I','F',0 }; |
| const WCHAR *ptr; |
| |
| /* try to determine from file name */ |
| ptr = strrchrW( lpApplicationName, '.' ); |
| if (!ptr) break; |
| if (!strcmpiW( ptr, comW )) |
| { |
| *lpBinaryType = SCS_DOS_BINARY; |
| ret = TRUE; |
| } |
| else if (!strcmpiW( ptr, pifW )) |
| { |
| *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; |
| } |
| |
| /*********************************************************************** |
| * GetBinaryTypeA [KERNEL32.@] |
| * GetBinaryType [KERNEL32.@] |
| */ |
| BOOL WINAPI GetBinaryTypeA( LPCSTR lpApplicationName, LPDWORD lpBinaryType ) |
| { |
| ANSI_STRING app_nameA; |
| NTSTATUS status; |
| |
| TRACE("%s\n", debugstr_a(lpApplicationName)); |
| |
| /* Sanity check. |
| */ |
| if ( lpApplicationName == NULL || lpBinaryType == NULL ) |
| return FALSE; |
| |
| RtlInitAnsiString(&app_nameA, lpApplicationName); |
| status = RtlAnsiStringToUnicodeString(&NtCurrentTeb()->StaticUnicodeString, |
| &app_nameA, FALSE); |
| if (!status) |
| return GetBinaryTypeW(NtCurrentTeb()->StaticUnicodeString.Buffer, lpBinaryType); |
| |
| SetLastError(RtlNtStatusToDosError(status)); |
| return FALSE; |
| } |
| |
| |
| /*********************************************************************** |
| * GetModuleHandleA (KERNEL32.@) |
| * GetModuleHandle32 (KERNEL.488) |
| * |
| * Get the handle of a dll loaded into the process address space. |
| * |
| * PARAMS |
| * module [I] Name of the dll |
| * |
| * RETURNS |
| * Success: A handle to the loaded dll. |
| * Failure: A NULL handle. Use GetLastError() to determine the cause. |
| */ |
| HMODULE WINAPI GetModuleHandleA(LPCSTR module) |
| { |
| NTSTATUS nts; |
| HMODULE ret; |
| UNICODE_STRING wstr; |
| |
| if (!module) return NtCurrentTeb()->Peb->ImageBaseAddress; |
| |
| RtlCreateUnicodeStringFromAsciiz(&wstr, module); |
| nts = LdrGetDllHandle(0, 0, &wstr, &ret); |
| RtlFreeUnicodeString( &wstr ); |
| if (nts != STATUS_SUCCESS) |
| { |
| ret = 0; |
| SetLastError( RtlNtStatusToDosError( nts ) ); |
| } |
| return ret; |
| } |
| |
| /*********************************************************************** |
| * GetModuleHandleW (KERNEL32.@) |
| * |
| * Unicode version of GetModuleHandleA. |
| */ |
| HMODULE WINAPI GetModuleHandleW(LPCWSTR module) |
| { |
| NTSTATUS nts; |
| HMODULE ret; |
| UNICODE_STRING wstr; |
| |
| if (!module) return NtCurrentTeb()->Peb->ImageBaseAddress; |
| |
| 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) |
| * |
| * Get the file name of a loaded module from its handle. |
| * |
| * RETURNS |
| * Success: The length of the file name, excluding the terminating NUL. |
| * Failure: 0. Use GetLastError() to determine the cause. |
| * |
| * NOTES |
| * This function always returns the long path of hModule (as opposed to |
| * GetModuleFileName16() which returns short paths when the modules version |
| * field is < 4.0). |
| */ |
| DWORD WINAPI GetModuleFileNameA( |
| HMODULE hModule, /* [in] Module handle (32 bit) */ |
| LPSTR lpFileName, /* [out] Destination for file name */ |
| DWORD size ) /* [in] Size of lpFileName in characters */ |
| { |
| 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.@) |
| * |
| * Unicode version of GetModuleFileNameA. |
| */ |
| 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 = NtCurrentTeb()->Peb->ImageBaseAddress; |
| 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); |
| } |
| |
| |
| /*********************************************************************** |
| * get_dll_system_path |
| */ |
| static const WCHAR *get_dll_system_path(void) |
| { |
| static WCHAR *path; |
| |
| if (!path) |
| { |
| WCHAR *p, *exe_name; |
| int len = 3; |
| |
| exe_name = NtCurrentTeb()->Peb->ProcessParameters->ImagePathName.Buffer; |
| if (!(p = strrchrW( exe_name, '\\' ))) p = exe_name; |
| /* include trailing backslash only on drive root */ |
| if (p == exe_name + 2 && exe_name[1] == ':') p++; |
| len += p - exe_name; |
| len += GetSystemDirectoryW( NULL, 0 ); |
| len += GetWindowsDirectoryW( NULL, 0 ); |
| path = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) ); |
| memcpy( path, exe_name, (p - exe_name) * sizeof(WCHAR) ); |
| p = path + (p - exe_name); |
| *p++ = ';'; |
| *p++ = '.'; |
| *p++ = ';'; |
| GetSystemDirectoryW( p, path + len - p); |
| p += strlenW(p); |
| *p++ = ';'; |
| GetWindowsDirectoryW( p, path + len - p); |
| } |
| return path; |
| } |
| |
| |
| /****************************************************************** |
| * get_dll_load_path |
| * |
| * Compute the load path to use for a given dll. |
| * Returned pointer must be freed by caller. |
| */ |
| static WCHAR *get_dll_load_path( LPCWSTR module ) |
| { |
| static const WCHAR pathW[] = {'P','A','T','H',0}; |
| |
| const WCHAR *system_path = get_dll_system_path(); |
| const WCHAR *mod_end = NULL; |
| UNICODE_STRING name, value; |
| WCHAR *p, *ret; |
| int len = 0, path_len = 0; |
| |
| /* adjust length for module name */ |
| |
| if (module) |
| { |
| mod_end = module; |
| if ((p = strrchrW( mod_end, '\\' ))) mod_end = p; |
| if ((p = strrchrW( mod_end, '/' ))) mod_end = p; |
| if (mod_end == module + 2 && module[1] == ':') mod_end++; |
| if (mod_end == module && module[0] && module[1] == ':') mod_end += 2; |
| len += (mod_end - module); |
| system_path = strchrW( system_path, ';' ); |
| } |
| len += strlenW( system_path ) + 2; |
| |
| /* get the PATH variable */ |
| |
| RtlInitUnicodeString( &name, pathW ); |
| value.Length = 0; |
| value.MaximumLength = 0; |
| value.Buffer = NULL; |
| if (RtlQueryEnvironmentVariable_U( NULL, &name, &value ) == STATUS_BUFFER_TOO_SMALL) |
| path_len = value.Length; |
| |
| if (!(ret = HeapAlloc( GetProcessHeap(), 0, path_len + len * sizeof(WCHAR) ))) return NULL; |
| p = ret; |
| if (module) |
| { |
| memcpy( ret, module, (mod_end - module) * sizeof(WCHAR) ); |
| p += (mod_end - module); |
| } |
| strcpyW( p, system_path ); |
| p += strlenW(p); |
| *p++ = ';'; |
| value.Buffer = p; |
| value.MaximumLength = path_len; |
| |
| while (RtlQueryEnvironmentVariable_U( NULL, &name, &value ) == STATUS_BUFFER_TOO_SMALL) |
| { |
| WCHAR *new_ptr; |
| |
| /* grow the buffer and retry */ |
| path_len = value.Length; |
| if (!(new_ptr = HeapReAlloc( GetProcessHeap(), 0, ret, path_len + len * sizeof(WCHAR) ))) |
| { |
| HeapFree( GetProcessHeap(), 0, ret ); |
| return NULL; |
| } |
| value.Buffer = new_ptr + (value.Buffer - ret); |
| value.MaximumLength = path_len; |
| ret = new_ptr; |
| } |
| value.Buffer[value.Length / sizeof(WCHAR)] = 0; |
| return ret; |
| } |
| |
| |
| /****************************************************************** |
| * MODULE_InitLoadPath |
| * |
| * Create the initial dll load path. |
| */ |
| void MODULE_InitLoadPath(void) |
| { |
| WCHAR *path = get_dll_load_path( NULL ); |
| RtlInitUnicodeString( &NtCurrentTeb()->Peb->ProcessParameters->DllPath, path ); |
| } |
| |
| |
| /****************************************************************** |
| * 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; |
| HMODULE module; |
| |
| *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; |
| |
| mapping = CreateFileMappingW( hFile, NULL, PAGE_READONLY, 0, 0, NULL ); |
| CloseHandle( hFile ); |
| if (!mapping) return FALSE; |
| |
| module = MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 ); |
| CloseHandle( mapping ); |
| if (!module) return FALSE; |
| |
| /* make sure it's a valid PE file */ |
| if (!RtlImageNtHeader(module)) |
| { |
| UnmapViewOfFile( module ); |
| return FALSE; |
| } |
| *hmod = (HMODULE)((char *)module + 1); /* set low bit of handle to indicate datafile module */ |
| return TRUE; |
| } |
| |
| |
| /****************************************************************** |
| * load_library |
| * |
| * Helper for LoadLibraryExA/W. |
| */ |
| static HMODULE load_library( const UNICODE_STRING *libname, DWORD flags ) |
| { |
| NTSTATUS nts; |
| HMODULE hModule; |
| WCHAR *load_path; |
| |
| 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( libname->Buffer, &hModule )) return hModule; |
| flags |= DONT_RESOLVE_DLL_REFERENCES; /* Just in case */ |
| /* Fallback to normal behaviour */ |
| } |
| |
| load_path = get_dll_load_path( flags & LOAD_WITH_ALTERED_SEARCH_PATH ? libname->Buffer : NULL ); |
| nts = LdrLoadDll( load_path, flags, libname, &hModule ); |
| HeapFree( GetProcessHeap(), 0, load_path ); |
| if (nts != STATUS_SUCCESS) |
| { |
| hModule = 0; |
| SetLastError( RtlNtStatusToDosError( nts ) ); |
| } |
| return hModule; |
| } |
| |
| |
| /****************************************************************** |
| * LoadLibraryExA (KERNEL32.@) |
| * |
| * Load a dll file into the process address space. |
| * |
| * PARAMS |
| * libname [I] Name of the file to load |
| * hfile [I] Reserved, must be 0. |
| * flags [I] Flags for loading the dll |
| * |
| * RETURNS |
| * Success: A handle to the loaded dll. |
| * Failure: A NULL handle. Use GetLastError() to determine the cause. |
| * |
| * NOTES |
| * 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; |
| HMODULE hModule; |
| |
| if (!libname) |
| { |
| SetLastError(ERROR_INVALID_PARAMETER); |
| return 0; |
| } |
| RtlCreateUnicodeStringFromAsciiz( &wstr, libname ); |
| hModule = load_library( &wstr, flags ); |
| RtlFreeUnicodeString( &wstr ); |
| return hModule; |
| } |
| |
| /*********************************************************************** |
| * LoadLibraryExW (KERNEL32.@) |
| * |
| * Unicode version of LoadLibraryExA. |
| */ |
| HMODULE WINAPI LoadLibraryExW(LPCWSTR libnameW, HANDLE hfile, DWORD flags) |
| { |
| UNICODE_STRING wstr; |
| |
| if (!libnameW) |
| { |
| SetLastError(ERROR_INVALID_PARAMETER); |
| return 0; |
| } |
| RtlInitUnicodeString( &wstr, libnameW ); |
| return load_library( &wstr, flags ); |
| } |
| |
| /*********************************************************************** |
| * LoadLibraryA (KERNEL32.@) |
| * |
| * Load a dll file into the process address space. |
| * |
| * PARAMS |
| * libname [I] Name of the file to load |
| * |
| * RETURNS |
| * Success: A handle to the loaded dll. |
| * Failure: A NULL handle. Use GetLastError() to determine the cause. |
| * |
| * NOTES |
| * See LoadLibraryExA(). |
| */ |
| HMODULE WINAPI LoadLibraryA(LPCSTR libname) |
| { |
| return LoadLibraryExA(libname, 0, 0); |
| } |
| |
| /*********************************************************************** |
| * LoadLibraryW (KERNEL32.@) |
| * |
| * Unicode version of LoadLibraryA. |
| */ |
| HMODULE WINAPI LoadLibraryW(LPCWSTR libnameW) |
| { |
| return LoadLibraryExW(libnameW, 0, 0); |
| } |
| |
| /*********************************************************************** |
| * FreeLibrary (KERNEL32.@) |
| * FreeLibrary32 (KERNEL.486) |
| * |
| * Free a dll loaded into the process address space. |
| * |
| * PARAMS |
| * hLibModule [I] Handle to the dll returned by LoadLibraryA(). |
| * |
| * RETURNS |
| * Success: TRUE. The dll is removed if it is not still in use. |
| * Failure: FALSE. Use GetLastError() to determine the cause. |
| */ |
| 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; |
| } |
| |
| /*********************************************************************** |
| * GetProcAddress (KERNEL32.@) |
| * |
| * Find the address of an exported symbol in a loaded dll. |
| * |
| * PARAMS |
| * hModule [I] Handle to the dll returned by LoadLibraryA(). |
| * function [I] Name of the symbol, or an integer ordinal number < 16384 |
| * |
| * RETURNS |
| * Success: A pointer to the symbol in the process address space. |
| * Failure: NULL. Use GetLastError() to determine the cause. |
| */ |
| 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) |
| * |
| * Find the address of an exported symbol in a loaded dll. |
| * |
| * PARAMS |
| * hModule [I] Handle to the dll returned by LoadLibraryA(). |
| * function [I] Name of the symbol, or an integer ordinal number < 16384 |
| * |
| * RETURNS |
| * Success: A pointer to the symbol in the process address space. |
| * Failure: NULL. Use GetLastError() to determine the cause. |
| */ |
| FARPROC WINAPI GetProcAddress32_16( HMODULE hModule, LPCSTR function ) |
| { |
| /* FIXME: we used to disable snoop when returning proc for Win16 subsystem */ |
| return GetProcAddress( hModule, function ); |
| } |
