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 #ifdef HAVE_DL_API
  14 #include <dlfcn.h>
  15 #endif
  16 #include <sys/types.h>
  17 #ifdef HAVE_SYS_MMAN_H
  18 #include <sys/mman.h>
  19 #endif
  20
  21 #include "windef.h"
  22 #include "wine/winbase16.h"
  23 #include "wine/library.h"
  24 #include "global.h"
  25 #include "module.h"
  26 #include "heap.h"
  27 #include "main.h"
  28 #include "winerror.h"
  29 #include "server.h"
  30 #include "debugtools.h"
  31
  32 DEFAULT_DEBUG_CHANNEL(module);
  33 DECLARE_DEBUG_CHANNEL(relay);
  34
  35 extern void RELAY_SetupDLL( const char *module );
  36
  37 static HMODULE main_module;
  38
  39 /***********************************************************************
  40  *           BUILTIN32_dlopen
  41  */
  42 void *BUILTIN32_dlopen( const char *name )
  43 {
  44 #ifdef HAVE_DL_API
  45     void *handle;
  46
  47     if (!(handle = wine_dll_load( name )))
  48     {
  49         LPSTR pErr;
  50         pErr = dlerror();
  51         if (strstr(pErr, "undefined symbol")) /* undef symbol -> ERR() */
  52             ERR("failed to load %s: %s\n", name, pErr);
  53         else /* WARN() for libraries that are supposed to be native */
  54             WARN("failed to load %s: %s\n", name, pErr );
  55     }
  56     return handle;
  57 #else
  58     return NULL;
  59 #endif
  60 }
  61
  62 /***********************************************************************
  63  *           BUILTIN32_dlclose
  64  */
  65 int BUILTIN32_dlclose( void *handle )
  66 {
  67 #ifdef HAVE_DL_API
  68     /* FIXME: should unregister descriptors first */
  69     /* return dlclose( handle ); */
  70 #endif
  71     return 0;
  72 }
  73
  74
  75 /***********************************************************************
  76  *           load_library
  77  *
  78  * Load a library in memory; callback function for wine_dll_register
  79  */
  80 static void load_library( void *base, const char *filename )
  81 {
  82     HMODULE module = (HMODULE)base;
  83     WINE_MODREF *wm;
  84
  85     if (!base)
  86     {
  87         ERR("could not map image for %s\n", filename ? filename : "main exe" );
  88         return;
  89     }
  90
  91     if (!(PE_HEADER(module)->FileHeader.Characteristics & IMAGE_FILE_DLL))
  92     {
  93         /* if we already have an executable, ignore this one */
  94         if (!main_module) main_module = module;
  95         return; /* don't create the modref here, will be done later on */
  96     }
  97
  98     if (GetModuleHandleA( filename ))
  99         MESSAGE( "Warning: loading builtin %s, but native version already present. Expect trouble.\n", filename );
 100
 101     /* Create 32-bit MODREF */
 102     if (!(wm = PE_CreateModule( module, filename, 0, -1, TRUE )))
 103     {
 104         ERR( "can't load %s\n", filename );
 105         SetLastError( ERROR_OUTOFMEMORY );
 106         return;
 107     }
 108     TRACE( "loaded %s %p %x\n", filename, wm, module );
 109     wm->refCount++;  /* we don't support freeing builtin dlls (FIXME)*/
 110
 111     /* setup relay debugging entry points */
 112     if (TRACE_ON(relay)) RELAY_SetupDLL( (void *)module );
 113 }
 114
 115
 116 /***********************************************************************
 117  *           BUILTIN32_LoadLibraryExA
 118  *
 119  * Partly copied from the original PE_ version.
 120  *
 121  */
 122 WINE_MODREF *BUILTIN32_LoadLibraryExA(LPCSTR path, DWORD flags)
 123 {
 124     WINE_MODREF   *wm;
 125     char dllname[20], *p;
 126     LPCSTR name;
 127     void *handle;
 128
 129     /* Fix the name in case we have a full path and extension */
 130     name = path;
 131     if ((p = strrchr( name, '\\' ))) name = p + 1;
 132     if ((p = strrchr( name, '/' ))) name = p + 1;
 133
 134     if (strlen(name) >= sizeof(dllname)-4) goto error;
 135
 136     strcpy( dllname, name );
 137     p = strrchr( dllname, '.' );
 138     if (!p) strcat( dllname, ".dll" );
 139
 140     if (!(handle = BUILTIN32_dlopen( dllname ))) goto error;
 141
 142     if (!(wm = MODULE_FindModule( path ))) wm = MODULE_FindModule( dllname );
 143     if (!wm)
 144     {
 145         ERR( "loaded .so but dll %s still not found\n", dllname );
 146         /* wine_dll_unload( handle );*/
 147         return NULL;
 148     }
 149     wm->dlhandle = handle;
 150     return wm;
 151
 152  error:
 153     SetLastError( ERROR_FILE_NOT_FOUND );
 154     return NULL;
 155 }
 156
 157 /***********************************************************************
 158  *           BUILTIN32_Init
 159  *
 160  * Initialize loading callbacks and return HMODULE of main exe.
 161  * 'main' is the main exe in case if was already loaded from a PE file.
 162  */
 163 HMODULE BUILTIN32_LoadExeModule( HMODULE main )
 164 {
 165     main_module = main;
 166     wine_dll_set_callback( load_library );
 167     if (!main_module)
 168         MESSAGE( "No built-in EXE module loaded!  Did you create a .spec file?\n" );
 169     return main_module;
 170 }
 171
 172
 173 /***********************************************************************
 174  *           BUILTIN32_RegisterDLL
 175  *
 176  * Register a built-in DLL descriptor.
 177  */
 178 void BUILTIN32_RegisterDLL( const IMAGE_NT_HEADERS *header, const char *filename )
 179 {
 180     extern void __wine_dll_register( const IMAGE_NT_HEADERS *header, const char *filename );
 181     __wine_dll_register( header, filename );
 182 }