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