relay32/builtin32.c

   1 /*
   2  * Win32 builtin functions
   3  *
   4  * Copyright 1997 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <assert.h>
  24 #include <string.h>
  25 #include <stdio.h>
  26 #include <ctype.h>
  27 #include <sys/types.h>
  28 #ifdef HAVE_SYS_MMAN_H
  29 #include <sys/mman.h>
  30 #endif
  31
  32 #include "windef.h"
  33 #include "wine/winbase16.h"
  34 #include "wine/library.h"
  35 #include "module.h"
  36 #include "file.h"
  37 #include "winerror.h"
  38 #include "wine/server.h"
  39 #include "wine/debug.h"
  40
  41 WINE_DEFAULT_DEBUG_CHANNEL(module);
  42 WINE_DECLARE_DEBUG_CHANNEL(relay);
  43
  44 extern void RELAY_SetupDLL( const char *module );
  45
  46 static HMODULE main_module;
  47
  48 /***********************************************************************
  49  *           BUILTIN32_dlopen
  50  */
  51 void *BUILTIN32_dlopen( const char *name )
  52 {
  53     void *handle;
  54     char error[256];
  55
  56     if (!(handle = wine_dll_load( name, error, sizeof(error) )))
  57     {
  58         if (strstr(error, "cannot open") || strstr(error, "open failed") ||
  59             (strstr(error, "Shared object") && strstr(error, "not found"))) {
  60             /* The file does not exist -> WARN() */
  61             WARN("cannot open .so lib for builtin %s: %s\n", name, error);
  62         } else {
  63             /* ERR() for all other errors (missing functions, ...) */
  64             ERR("failed to load .so lib for builtin %s: %s\n", name, error );
  65         }
  66     }
  67     return handle;
  68 }
  69
  70 /***********************************************************************
  71  *           BUILTIN32_dlclose
  72  */
  73 int BUILTIN32_dlclose( void *handle )
  74 {
  75     /* FIXME: should unregister descriptors first */
  76     /* wine_dll_unload( handle ); */
  77     return 0;
  78 }
  79
  80
  81 /***********************************************************************
  82  *           load_library
  83  *
  84  * Load a library in memory; callback function for wine_dll_register
  85  */
  86 static void load_library( void *base, const char *filename )
  87 {
  88     HMODULE module = (HMODULE)base;
  89     WINE_MODREF *wm;
  90     char *fullname;
  91     DWORD len;
  92
  93     if (!base)
  94     {
  95         ERR("could not map image for %s\n", filename ? filename : "main exe" );
  96         return;
  97     }
  98
  99     if (!(PE_HEADER(module)->FileHeader.Characteristics & IMAGE_FILE_DLL))
 100     {
 101         /* if we already have an executable, ignore this one */
 102         if (!main_module) main_module = module;
 103         return; /* don't create the modref here, will be done later on */
 104     }
 105
 106     if (GetModuleHandleA( filename ))
 107         MESSAGE( "Warning: loading builtin %s, but native version already present. Expect trouble.\n", filename );
 108
 109     len = GetSystemDirectoryA( NULL, 0 );
 110     if (!(fullname = HeapAlloc( GetProcessHeap(), 0, len + strlen(filename) + 1 )))
 111     {
 112         ERR( "can't load %s\n", filename );
 113         SetLastError( ERROR_OUTOFMEMORY );
 114         return;
 115     }
 116     GetSystemDirectoryA( fullname, len );
 117     strcat( fullname, "\\" );
 118     strcat( fullname, filename );
 119
 120     /* Create 32-bit MODREF */
 121     if (!(wm = PE_CreateModule( module, fullname, 0, 0, TRUE )))
 122     {
 123         ERR( "can't load %s\n", filename );
 124         HeapFree( GetProcessHeap(), 0, fullname );
 125         SetLastError( ERROR_OUTOFMEMORY );
 126         return;
 127     }
 128     TRACE( "loaded %s %p %x\n", fullname, wm, module );
 129     HeapFree( GetProcessHeap(), 0, fullname );
 130     wm->refCount++;  /* we don't support freeing builtin dlls (FIXME)*/
 131
 132     /* setup relay debugging entry points */
 133     if (TRACE_ON(relay)) RELAY_SetupDLL( (void *)module );
 134 }
 135
 136
 137 /***********************************************************************
 138  *           BUILTIN32_LoadLibraryExA
 139  *
 140  * Partly copied from the original PE_ version.
 141  *
 142  */
 143 WINE_MODREF *BUILTIN32_LoadLibraryExA(LPCSTR path, DWORD flags)
 144 {
 145     WINE_MODREF   *wm;
 146     char dllname[20], *p;
 147     LPCSTR name;
 148     void *handle;
 149
 150     /* Fix the name in case we have a full path and extension */
 151     name = path;
 152     if ((p = strrchr( name, '\\' ))) name = p + 1;
 153     if ((p = strrchr( name, '/' ))) name = p + 1;
 154
 155     if (strlen(name) >= sizeof(dllname)-4) goto error;
 156
 157     strcpy( dllname, name );
 158     p = strrchr( dllname, '.' );
 159     if (!p) strcat( dllname, ".dll" );
 160     for (p = dllname; *p; p++) *p = FILE_tolower(*p);
 161
 162     if (!(handle = BUILTIN32_dlopen( dllname ))) goto error;
 163
 164     if (!(wm = MODULE_FindModule( path ))) wm = MODULE_FindModule( dllname );
 165     if (!wm)
 166     {
 167         ERR( "loaded .so but dll %s still not found - library environment problem or version conflict, check your setup.\n", dllname );
 168         /* wine_dll_unload( handle );*/
 169         return NULL;
 170     }
 171     wm->dlhandle = handle;
 172     return wm;
 173
 174  error:
 175     SetLastError( ERROR_FILE_NOT_FOUND );
 176     return NULL;
 177 }
 178
 179 /***********************************************************************
 180  *           BUILTIN32_Init
 181  *
 182  * Initialize loading callbacks and return HMODULE of main exe.
 183  * 'main' is the main exe in case it was already loaded from a PE file.
 184  */
 185 HMODULE BUILTIN32_LoadExeModule( HMODULE main )
 186 {
 187     main_module = main;
 188     wine_dll_set_callback( load_library );
 189     if (!main_module)
 190         MESSAGE( "No built-in EXE module loaded!  Did you create a .spec file?\n" );
 191     return main_module;
 192 }
 193
 194
 195 /***********************************************************************
 196  *           BUILTIN32_RegisterDLL
 197  *
 198  * Register a built-in DLL descriptor.
 199  */
 200 void BUILTIN32_RegisterDLL( const IMAGE_NT_HEADERS *header, const char *filename )
 201 {
 202     extern void __wine_dll_register( const IMAGE_NT_HEADERS *header, const char *filename );
 203     __wine_dll_register( header, filename );
 204 }