relay32/builtin32.c

   1 /*
   2  * Win32 builtin functions
   3  *
   4  * Copyright 1997 Alexandre Julliard
   5  */
   6
   7 #include "config.h"
   8
   9 #include <assert.h>
  10 #include <string.h>
  11 #include <stdio.h>
  12 #include <ctype.h>
  13 #include <sys/types.h>
  14 #ifdef HAVE_SYS_MMAN_H
  15 #include <sys/mman.h>
  16 #endif
  17
  18 #include "windef.h"
  19 #include "wine/winbase16.h"
  20 #include "wine/library.h"
  21 #include "module.h"
  22 #include "file.h"
  23 #include "winerror.h"
  24 #include "wine/server.h"
  25 #include "debugtools.h"
  26
  27 DEFAULT_DEBUG_CHANNEL(module);
  28 DECLARE_DEBUG_CHANNEL(relay);
  29
  30 extern void RELAY_SetupDLL( const char *module );
  31
  32 static HMODULE main_module;
  33
  34 /***********************************************************************
  35  *           BUILTIN32_dlopen
  36  */
  37 void *BUILTIN32_dlopen( const char *name )
  38 {
  39     void *handle;
  40     char error[256];
  41
  42     if (!(handle = wine_dll_load( name, error, sizeof(error) )))
  43     {
  44         if (strstr(error, "cannot open")) /* cannot open -> WARN() */
  45             WARN("cannot open .so lib for builtin %s: %s\n", name, error);
  46         else /* ERR() for all other errors (missing functions, ...) */
  47             ERR("failed to load .so lib for builtin %s: %s\n", name, error );
  48     }
  49     return handle;
  50 }
  51
  52 /***********************************************************************
  53  *           BUILTIN32_dlclose
  54  */
  55 int BUILTIN32_dlclose( void *handle )
  56 {
  57     /* FIXME: should unregister descriptors first */
  58     /* wine_dll_unload( handle ); */
  59     return 0;
  60 }
  61
  62
  63 /***********************************************************************
  64  *           load_library
  65  *
  66  * Load a library in memory; callback function for wine_dll_register
  67  */
  68 static void load_library( void *base, const char *filename )
  69 {
  70     HMODULE module = (HMODULE)base;
  71     WINE_MODREF *wm;
  72
  73     if (!base)
  74     {
  75         ERR("could not map image for %s\n", filename ? filename : "main exe" );
  76         return;
  77     }
  78
  79     if (!(PE_HEADER(module)->FileHeader.Characteristics & IMAGE_FILE_DLL))
  80     {
  81         /* if we already have an executable, ignore this one */
  82         if (!main_module) main_module = module;
  83         return; /* don't create the modref here, will be done later on */
  84     }
  85
  86     if (GetModuleHandleA( filename ))
  87         MESSAGE( "Warning: loading builtin %s, but native version already present. Expect trouble.\n", filename );
  88
  89     /* Create 32-bit MODREF */
  90     if (!(wm = PE_CreateModule( module, filename, 0, 0, TRUE )))
  91     {
  92         ERR( "can't load %s\n", filename );
  93         SetLastError( ERROR_OUTOFMEMORY );
  94         return;
  95     }
  96     TRACE( "loaded %s %p %x\n", filename, wm, module );
  97     wm->refCount++;  /* we don't support freeing builtin dlls (FIXME)*/
  98
  99     /* setup relay debugging entry points */
 100     if (TRACE_ON(relay)) RELAY_SetupDLL( (void *)module );
 101 }
 102
 103
 104 /***********************************************************************
 105  *           BUILTIN32_LoadLibraryExA
 106  *
 107  * Partly copied from the original PE_ version.
 108  *
 109  */
 110 WINE_MODREF *BUILTIN32_LoadLibraryExA(LPCSTR path, DWORD flags)
 111 {
 112     WINE_MODREF   *wm;
 113     char dllname[20], *p;
 114     LPCSTR name;
 115     void *handle;
 116
 117     /* Fix the name in case we have a full path and extension */
 118     name = path;
 119     if ((p = strrchr( name, '\\' ))) name = p + 1;
 120     if ((p = strrchr( name, '/' ))) name = p + 1;
 121
 122     if (strlen(name) >= sizeof(dllname)-4) goto error;
 123
 124     strcpy( dllname, name );
 125     p = strrchr( dllname, '.' );
 126     if (!p) strcat( dllname, ".dll" );
 127     for (p = dllname; *p; p++) *p = FILE_tolower(*p);
 128
 129     if (!(handle = BUILTIN32_dlopen( dllname ))) goto error;
 130
 131     if (!(wm = MODULE_FindModule( path ))) wm = MODULE_FindModule( dllname );
 132     if (!wm)
 133     {
 134         ERR( "loaded .so but dll %s still not found\n", dllname );
 135         /* wine_dll_unload( handle );*/
 136         return NULL;
 137     }
 138     wm->dlhandle = handle;
 139     return wm;
 140
 141  error:
 142     SetLastError( ERROR_FILE_NOT_FOUND );
 143     return NULL;
 144 }
 145
 146 /***********************************************************************
 147  *           BUILTIN32_Init
 148  *
 149  * Initialize loading callbacks and return HMODULE of main exe.
 150  * 'main' is the main exe in case if was already loaded from a PE file.
 151  */
 152 HMODULE BUILTIN32_LoadExeModule( HMODULE main )
 153 {
 154     main_module = main;
 155     wine_dll_set_callback( load_library );
 156     if (!main_module)
 157         MESSAGE( "No built-in EXE module loaded!  Did you create a .spec file?\n" );
 158     return main_module;
 159 }
 160
 161
 162 /***********************************************************************
 163  *           BUILTIN32_RegisterDLL
 164  *
 165  * Register a built-in DLL descriptor.
 166  */
 167 void BUILTIN32_RegisterDLL( const IMAGE_NT_HEADERS *header, const char *filename )
 168 {
 169     extern void __wine_dll_register( const IMAGE_NT_HEADERS *header, const char *filename );
 170     __wine_dll_register( header, filename );
 171 }