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 #include "wine/port.h"
  23
  24 #include <assert.h>
  25 #include <string.h>
  26 #include <stdio.h>
  27 #include <ctype.h>
  28 #include <sys/types.h>
  29 #ifdef HAVE_SYS_MMAN_H
  30 #include <sys/mman.h>
  31 #endif
  32
  33 #include "windef.h"
  34 #include "wine/winbase16.h"
  35 #include "wine/library.h"
  36 #include "module.h"
  37 #include "file.h"
  38 #include "winerror.h"
  39 #include "wine/server.h"
  40 #include "wine/debug.h"
  41
  42 WINE_DEFAULT_DEBUG_CHANNEL(module);
  43 WINE_DECLARE_DEBUG_CHANNEL(relay);
  44
  45 extern void RELAY_SetupDLL( const char *module );
  46
  47 static HMODULE main_module;
  48
  49 /***********************************************************************
  50  *           BUILTIN32_dlopen
  51  */
  52 void *BUILTIN32_dlopen( const char *name )
  53 {
  54     void *handle;
  55     char error[256];
  56
  57     if (!(handle = wine_dll_load( name, error, sizeof(error) )))
  58     {
  59         if (strstr(error, "cannot open") || strstr(error, "open failed") ||
  60             (strstr(error, "Shared object") && strstr(error, "not found"))) {
  61             /* The file does not exist -> WARN() */
  62             WARN("cannot open .so lib for builtin %s: %s\n", name, error);
  63         } else {
  64             /* ERR() for all other errors (missing functions, ...) */
  65             ERR("failed to load .so lib for builtin %s: %s\n", name, error );
  66         }
  67     }
  68     return handle;
  69 }
  70
  71 /***********************************************************************
  72  *           BUILTIN32_dlclose
  73  */
  74 int BUILTIN32_dlclose( void *handle )
  75 {
  76     /* FIXME: should unregister descriptors first */
  77     /* wine_dll_unload( handle ); */
  78     return 0;
  79 }
  80
  81
  82 /***********************************************************************
  83  *           load_library
  84  *
  85  * Load a library in memory; callback function for wine_dll_register
  86  */
  87 static void load_library( void *base, const char *filename )
  88 {
  89     HMODULE module = (HMODULE)base;
  90     IMAGE_NT_HEADERS *nt;
  91     WINE_MODREF *wm;
  92     char *fullname;
  93     DWORD len;
  94
  95     if (!base)
  96     {
  97         ERR("could not map image for %s\n", filename ? filename : "main exe" );
  98         return;
  99     }
 100     if (!(nt = RtlImageNtHeader( module )))
 101     {
 102         ERR( "bad module for %s\n", filename ? filename : "main exe" );
 103         return;
 104     }
 105
 106     if (!(nt->FileHeader.Characteristics & IMAGE_FILE_DLL))
 107     {
 108         /* if we already have an executable, ignore this one */
 109         if (!main_module) main_module = module;
 110         return; /* don't create the modref here, will be done later on */
 111     }
 112
 113     if (GetModuleHandleA( filename ))
 114         MESSAGE( "Warning: loading builtin %s, but native version already present. Expect trouble.\n", filename );
 115
 116     len = GetSystemDirectoryA( NULL, 0 );
 117     if (!(fullname = HeapAlloc( GetProcessHeap(), 0, len + strlen(filename) + 1 )))
 118     {
 119         ERR( "can't load %s\n", filename );
 120         SetLastError( ERROR_OUTOFMEMORY );
 121         return;
 122     }
 123     GetSystemDirectoryA( fullname, len );
 124     strcat( fullname, "\\" );
 125     strcat( fullname, filename );
 126
 127     /* Create 32-bit MODREF */
 128     if (!(wm = PE_CreateModule( module, fullname, 0, 0, TRUE )))
 129     {
 130         ERR( "can't load %s\n", filename );
 131         HeapFree( GetProcessHeap(), 0, fullname );
 132         SetLastError( ERROR_OUTOFMEMORY );
 133         return;
 134     }
 135     TRACE( "loaded %s %p %p\n", fullname, wm, module );
 136     HeapFree( GetProcessHeap(), 0, fullname );
 137     wm->refCount++;  /* we don't support freeing builtin dlls (FIXME)*/
 138
 139     /* setup relay debugging entry points */
 140     if (TRACE_ON(relay)) RELAY_SetupDLL( (void *)module );
 141 }
 142
 143
 144 /***********************************************************************
 145  *           BUILTIN32_LoadLibraryExA
 146  *
 147  * Partly copied from the original PE_ version.
 148  *
 149  */
 150 WINE_MODREF *BUILTIN32_LoadLibraryExA(LPCSTR path, DWORD flags)
 151 {
 152     WINE_MODREF   *wm;
 153     char dllname[20], *p;
 154     LPCSTR name;
 155     void *handle;
 156
 157     /* Fix the name in case we have a full path and extension */
 158     name = path;
 159     if ((p = strrchr( name, '\\' ))) name = p + 1;
 160     if ((p = strrchr( name, '/' ))) name = p + 1;
 161
 162     if (strlen(name) >= sizeof(dllname)-4) goto error;
 163
 164     strcpy( dllname, name );
 165     p = strrchr( dllname, '.' );
 166     if (!p) strcat( dllname, ".dll" );
 167     for (p = dllname; *p; p++) *p = FILE_tolower(*p);
 168
 169     if (!(handle = BUILTIN32_dlopen( dllname ))) goto error;
 170
 171     if (!(wm = MODULE_FindModule( path ))) wm = MODULE_FindModule( dllname );
 172     if (!wm)
 173     {
 174         ERR( "loaded .so but dll %s still not found - 16-bit dll or version conflict.\n", dllname );
 175         /* wine_dll_unload( handle );*/
 176         SetLastError( ERROR_BAD_EXE_FORMAT );
 177         return NULL;
 178     }
 179     wm->dlhandle = handle;
 180     return wm;
 181
 182  error:
 183     SetLastError( ERROR_FILE_NOT_FOUND );
 184     return NULL;
 185 }
 186
 187 /***********************************************************************
 188  *           BUILTIN32_Init
 189  *
 190  * Initialize loading callbacks and return HMODULE of main exe.
 191  * 'main' is the main exe in case it was already loaded from a PE file.
 192  */
 193 HMODULE BUILTIN32_LoadExeModule( HMODULE main )
 194 {
 195     main_module = main;
 196     wine_dll_set_callback( load_library );
 197     if (!main_module)
 198         MESSAGE( "No built-in EXE module loaded!  Did you create a .spec file?\n" );
 199     return main_module;
 200 }
 201
 202
 203 /***********************************************************************
 204  *           BUILTIN32_RegisterDLL
 205  *
 206  * Register a built-in DLL descriptor.
 207  */
 208 void BUILTIN32_RegisterDLL( const IMAGE_NT_HEADERS *header, const char *filename )
 209 {
 210     extern void __wine_dll_register( const IMAGE_NT_HEADERS *header, const char *filename );
 211     __wine_dll_register( header, filename );
 212 }