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") || strstr(error, "open failed")) {
  45             /* The file does not exist -> WARN() */
  46             WARN("cannot open .so lib for builtin %s: %s\n", name, error);
  47         } else {
  48             /* ERR() for all other errors (missing functions, ...) */
  49             ERR("failed to load .so lib for builtin %s: %s\n", name, error );
  50         }
  51     }
  52     return handle;
  53 }
  54
  55 /***********************************************************************
  56  *           BUILTIN32_dlclose
  57  */
  58 int BUILTIN32_dlclose( void *handle )
  59 {
  60     /* FIXME: should unregister descriptors first */
  61     /* wine_dll_unload( handle ); */
  62     return 0;
  63 }
  64
  65
  66 /***********************************************************************
  67  *           load_library
  68  *
  69  * Load a library in memory; callback function for wine_dll_register
  70  */
  71 static void load_library( void *base, const char *filename )
  72 {
  73     HMODULE module = (HMODULE)base;
  74     WINE_MODREF *wm;
  75
  76     if (!base)
  77     {
  78         ERR("could not map image for %s\n", filename ? filename : "main exe" );
  79         return;
  80     }
  81
  82     if (!(PE_HEADER(module)->FileHeader.Characteristics & IMAGE_FILE_DLL))
  83     {
  84         /* if we already have an executable, ignore this one */
  85         if (!main_module) main_module = module;
  86         return; /* don't create the modref here, will be done later on */
  87     }
  88
  89     if (GetModuleHandleA( filename ))
  90         MESSAGE( "Warning: loading builtin %s, but native version already present. Expect trouble.\n", filename );
  91
  92     /* Create 32-bit MODREF */
  93     if (!(wm = PE_CreateModule( module, filename, 0, 0, TRUE )))
  94     {
  95         ERR( "can't load %s\n", filename );
  96         SetLastError( ERROR_OUTOFMEMORY );
  97         return;
  98     }
  99     TRACE( "loaded %s %p %x\n", filename, wm, module );
 100     wm->refCount++;  /* we don't support freeing builtin dlls (FIXME)*/
 101
 102     /* setup relay debugging entry points */
 103     if (TRACE_ON(relay)) RELAY_SetupDLL( (void *)module );
 104 }
 105
 106
 107 /***********************************************************************
 108  *           BUILTIN32_LoadLibraryExA
 109  *
 110  * Partly copied from the original PE_ version.
 111  *
 112  */
 113 WINE_MODREF *BUILTIN32_LoadLibraryExA(LPCSTR path, DWORD flags)
 114 {
 115     WINE_MODREF   *wm;
 116     char dllname[20], *p;
 117     LPCSTR name;
 118     void *handle;
 119
 120     /* Fix the name in case we have a full path and extension */
 121     name = path;
 122     if ((p = strrchr( name, '\\' ))) name = p + 1;
 123     if ((p = strrchr( name, '/' ))) name = p + 1;
 124
 125     if (strlen(name) >= sizeof(dllname)-4) goto error;
 126
 127     strcpy( dllname, name );
 128     p = strrchr( dllname, '.' );
 129     if (!p) strcat( dllname, ".dll" );
 130     for (p = dllname; *p; p++) *p = FILE_tolower(*p);
 131
 132     if (!(handle = BUILTIN32_dlopen( dllname ))) goto error;
 133
 134     if (!(wm = MODULE_FindModule( path ))) wm = MODULE_FindModule( dllname );
 135     if (!wm)
 136     {
 137         ERR( "loaded .so but dll %s still not found\n", dllname );
 138         /* wine_dll_unload( handle );*/
 139         return NULL;
 140     }
 141     wm->dlhandle = handle;
 142     return wm;
 143
 144  error:
 145     SetLastError( ERROR_FILE_NOT_FOUND );
 146     return NULL;
 147 }
 148
 149 /***********************************************************************
 150  *           BUILTIN32_Init
 151  *
 152  * Initialize loading callbacks and return HMODULE of main exe.
 153  * 'main' is the main exe in case if was already loaded from a PE file.
 154  */
 155 HMODULE BUILTIN32_LoadExeModule( HMODULE main )
 156 {
 157     main_module = main;
 158     wine_dll_set_callback( load_library );
 159     if (!main_module)
 160         MESSAGE( "No built-in EXE module loaded!  Did you create a .spec file?\n" );
 161     return main_module;
 162 }
 163
 164
 165 /***********************************************************************
 166  *           BUILTIN32_RegisterDLL
 167  *
 168  * Register a built-in DLL descriptor.
 169  */
 170 void BUILTIN32_RegisterDLL( const IMAGE_NT_HEADERS *header, const char *filename )
 171 {
 172     extern void __wine_dll_register( const IMAGE_NT_HEADERS *header, const char *filename );
 173     __wine_dll_register( header, filename );
 174 }