/* * Copyright 1994 Eric Youndale & Erik Bos * Copyright 1995 Martin von Löwis * Copyright 1996-98 Marcus Meissner * * based on Eric Youndale's pe-test and: * ftp.microsoft.com:/developr/MSDN/OctCD/PEFILE.ZIP * * 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 */ /* Notes: * Before you start changing something in this file be aware of the following: * * - There are several functions called recursively. In a very subtle and * obscure way. DLLs can reference each other recursively etc. * - If you want to enhance, speed up or clean up something in here, think * twice WHY it is implemented in that strange way. There is usually a reason. * Though sometimes it might just be lazyness ;) * - In PE_MapImage, right before PE_fixup_imports() all external and internal * state MUST be correct since this function can be called with the SAME image * AGAIN. (Thats recursion for you.) That means MODREF.module and * NE_MODULE.module32. */ #include "config.h" #include #ifdef HAVE_SYS_MMAN_H #include #endif #include #include "winbase.h" #include "winerror.h" #include "snoop.h" #include "wine/server.h" #include "wine/debug.h" #include "ntdll_misc.h" WINE_DEFAULT_DEBUG_CHANNEL(win32); WINE_DECLARE_DEBUG_CHANNEL(module); WINE_DECLARE_DEBUG_CHANNEL(relay); /* convert PE image VirtualAddress to Real Address */ inline static void *get_rva( HMODULE module, DWORD va ) { return (void *)((char *)module + va); } #define AdjustPtr(ptr,delta) ((char *)(ptr) + (delta)) void dump_exports( HMODULE hModule ) { char *Module; int i, j; WORD *ordinal; DWORD *function,*functions; DWORD *name; IMAGE_EXPORT_DIRECTORY *pe_exports; DWORD rva_start, size; pe_exports = RtlImageDirectoryEntryToData( hModule, TRUE, IMAGE_DIRECTORY_ENTRY_EXPORT, &size ); rva_start = (char *)pe_exports - (char *)hModule; Module = get_rva(hModule, pe_exports->Name); DPRINTF("*******EXPORT DATA*******\n"); DPRINTF("Module name is %s, %ld functions, %ld names\n", Module, pe_exports->NumberOfFunctions, pe_exports->NumberOfNames); ordinal = get_rva(hModule, pe_exports->AddressOfNameOrdinals); functions = function = get_rva(hModule, pe_exports->AddressOfFunctions); name = get_rva(hModule, pe_exports->AddressOfNames); DPRINTF(" Ord RVA Addr Name\n" ); for (i=0;iNumberOfFunctions;i++, function++) { if (!*function) continue; /* No such function */ DPRINTF( "%4ld %08lx %p", i + pe_exports->Base, *function, get_rva(hModule, *function) ); /* Check if we have a name for it */ for (j = 0; j < pe_exports->NumberOfNames; j++) if (ordinal[j] == i) { DPRINTF( " %s", (char*)get_rva(hModule, name[j]) ); break; } if ((*function >= rva_start) && (*function <= rva_start + size)) DPRINTF(" (forwarded -> %s)", (char *)get_rva(hModule, *function)); DPRINTF("\n"); } } /********************************************************************** * PE_LoadImage * Load one PE format DLL/EXE into memory * * Unluckily we can't just mmap the sections where we want them, for * (at least) Linux does only support offsets which are page-aligned. * * BUT we have to map the whole image anyway, for Win32 programs sometimes * want to access them. (HMODULE points to the start of it) */ HMODULE PE_LoadImage( HANDLE hFile, LPCSTR filename, DWORD flags ) { IMAGE_NT_HEADERS *nt; HMODULE hModule; HANDLE mapping; void *base = NULL; OBJECT_ATTRIBUTES attr; LARGE_INTEGER lg_int; DWORD len = 0; NTSTATUS nts; TRACE_(module)( "loading %s\n", filename ); attr.Length = sizeof(attr); attr.RootDirectory = 0; attr.ObjectName = NULL; attr.Attributes = 0; attr.SecurityDescriptor = NULL; attr.SecurityQualityOfService = NULL; lg_int.QuadPart = 0; if (NtCreateSection( &mapping, STANDARD_RIGHTS_REQUIRED | SECTION_QUERY | SECTION_MAP_READ, &attr, &lg_int, 0, SEC_IMAGE, hFile ) != STATUS_SUCCESS) return 0; nts = NtMapViewOfSection( mapping, GetCurrentProcess(), &base, 0, 0, &lg_int, &len, ViewShare, 0, PAGE_READONLY ); NtClose( mapping ); if (nts != STATUS_SUCCESS) return 0; /* virus check */ hModule = (HMODULE)base; nt = RtlImageNtHeader( hModule ); if (nt->OptionalHeader.AddressOfEntryPoint) { if (!RtlImageRvaToSection( nt, hModule, nt->OptionalHeader.AddressOfEntryPoint )) MESSAGE("VIRUS WARNING: PE module has an invalid entrypoint (0x%08lx) " "outside all sections (possibly infected by Tchernobyl/SpaceFiller virus)!\n", nt->OptionalHeader.AddressOfEntryPoint ); } return hModule; } /********************************************************************** * PE_CreateModule * * Create WINE_MODREF structure for loaded HMODULE, link it into * process modref_list, and fixup all imports. * * Note: hModule must point to a correctly allocated PE image, * with base relocations applied; the 16-bit dummy module * associated to hModule must already exist. * * Note: This routine must always be called in the context of the * process that is to own the module to be created. * * Note: Assumes that the process critical section is held */ WINE_MODREF *PE_CreateModule( HMODULE hModule, LPCSTR filename, DWORD flags, HANDLE hFile, BOOL builtin ) { IMAGE_NT_HEADERS *nt; IMAGE_DATA_DIRECTORY *dir; IMAGE_EXPORT_DIRECTORY *pe_export = NULL; WINE_MODREF *wm; /* Retrieve DataDirectory entries */ nt = RtlImageNtHeader(hModule); dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_EXPORT; if (dir->Size) pe_export = get_rva(hModule, dir->VirtualAddress); dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_EXCEPTION; if (dir->Size) FIXME("Exception directory ignored\n" ); dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_SECURITY; if (dir->Size) FIXME("Security directory ignored\n" ); /* IMAGE_DIRECTORY_ENTRY_BASERELOC handled in PE_LoadImage */ /* IMAGE_DIRECTORY_ENTRY_DEBUG handled by debugger */ dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_GLOBALPTR; if (dir->Size) FIXME("Global Pointer (MIPS) ignored\n" ); /* IMAGE_DIRECTORY_ENTRY_TLS handled in PE_TlsInit */ dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG; if (dir->Size) FIXME("Load Configuration directory ignored\n" ); dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT; if (dir->Size) TRACE("Bound Import directory ignored\n" ); dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_IAT; if (dir->Size) TRACE("Import Address Table directory ignored\n" ); dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT; if (dir->Size) { TRACE("Delayed import, stub calls LoadLibrary\n" ); /* * Nothing to do here. */ #ifdef ImgDelayDescr /* * This code is useful to observe what the heck is going on. */ { ImgDelayDescr *pe_delay = NULL; pe_delay = get_rva(hModule, dir->VirtualAddress); TRACE("pe_delay->grAttrs = %08x\n", pe_delay->grAttrs); TRACE("pe_delay->szName = %s\n", pe_delay->szName); TRACE("pe_delay->phmod = %08x\n", pe_delay->phmod); TRACE("pe_delay->pIAT = %08x\n", pe_delay->pIAT); TRACE("pe_delay->pINT = %08x\n", pe_delay->pINT); TRACE("pe_delay->pBoundIAT = %08x\n", pe_delay->pBoundIAT); TRACE("pe_delay->pUnloadIAT = %08x\n", pe_delay->pUnloadIAT); TRACE("pe_delay->dwTimeStamp = %08x\n", pe_delay->dwTimeStamp); } #endif /* ImgDelayDescr */ } dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR; if (dir->Size) FIXME("Unknown directory 14 ignored\n" ); dir = nt->OptionalHeader.DataDirectory+15; if (dir->Size) FIXME("Unknown directory 15 ignored\n" ); /* Allocate and fill WINE_MODREF */ if (!(wm = MODULE_AllocModRef( hModule, filename ))) return NULL; if ( builtin ) wm->ldr.Flags |= LDR_WINE_INTERNAL; else if ( flags & DONT_RESOLVE_DLL_REFERENCES ) wm->ldr.Flags |= LDR_DONT_RESOLVE_REFS; /* Dump Exports */ if (pe_export && TRACE_ON(win32)) dump_exports( hModule ); /* Fixup Imports */ if (!(wm->ldr.Flags & LDR_DONT_RESOLVE_REFS) && PE_fixup_imports( wm )) { /* the module has only be inserted in the load & memory order lists */ RemoveEntryList(&wm->ldr.InLoadOrderModuleList); RemoveEntryList(&wm->ldr.InMemoryOrderModuleList); /* FIXME: there are several more dangling references * left. Including dlls loaded by this dll before the * failed one. Unrolling is rather difficult with the * current structure and we can leave them lying * around with no problems, so we don't care. * As these might reference our wm, we don't free it. */ return NULL; } if (!builtin && pe_export) SNOOP_RegisterDLL( hModule, wm->modname, pe_export->Base, pe_export->NumberOfFunctions ); /* Send DLL load event */ /* we don't need to send a dll event for the main exe */ if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL) { if (hFile) { UINT drive_type = GetDriveTypeA( wm->short_filename ); /* don't keep the file handle open on removable media */ if (drive_type == DRIVE_REMOVABLE || drive_type == DRIVE_CDROM) hFile = 0; } SERVER_START_REQ( load_dll ) { req->handle = hFile; req->base = (void *)hModule; req->size = nt->OptionalHeader.SizeOfImage; req->dbg_offset = nt->FileHeader.PointerToSymbolTable; req->dbg_size = nt->FileHeader.NumberOfSymbols; req->name = &wm->filename; wine_server_add_data( req, wm->filename, strlen(wm->filename) ); wine_server_call( req ); } SERVER_END_REQ; } return wm; } /****************************************************************************** * The PE Library Loader frontend. * FIXME: handle the flags. */ NTSTATUS PE_LoadLibraryExA (LPCSTR name, DWORD flags, WINE_MODREF** pwm) { HMODULE hModule32; HANDLE hFile; hFile = CreateFileA( name, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0 ); if ( hFile == INVALID_HANDLE_VALUE ) { /* keep it that way until we transform CreateFile into NtCreateFile */ return (GetLastError() == ERROR_FILE_NOT_FOUND) ? STATUS_NO_SUCH_FILE : STATUS_INTERNAL_ERROR; } /* Load PE module */ hModule32 = PE_LoadImage( hFile, name, flags ); if (!hModule32) { CloseHandle( hFile ); return STATUS_INTERNAL_ERROR; } /* Create 32-bit MODREF */ if ( !(*pwm = PE_CreateModule( hModule32, name, flags, hFile, FALSE )) ) { ERR( "can't load %s\n", name ); CloseHandle( hFile ); return STATUS_NO_MEMORY; /* FIXME */ } CloseHandle( hFile ); return STATUS_SUCCESS; }