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 "ntdll_misc.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 static HMODULE main_module;
  46 static NTSTATUS last_status; /* use to gather all errors in callback */
  47
  48
  49 /***********************************************************************
  50  *           load_library
  51  *
  52  * Load a library in memory; callback function for wine_dll_register
  53  */
  54 static void load_library( void *base, const char *filename )
  55 {
  56     UNICODE_STRING      wstr;
  57     HMODULE module = (HMODULE)base, ret;
  58     IMAGE_NT_HEADERS *nt;
  59     WINE_MODREF *wm;
  60     char *fullname;
  61     DWORD len;
  62
  63     if (!base)
  64     {
  65         ERR("could not map image for %s\n", filename ? filename : "main exe" );
  66         return;
  67     }
  68     if (!(nt = RtlImageNtHeader( module )))
  69     {
  70         ERR( "bad module for %s\n", filename ? filename : "main exe" );
  71         last_status = STATUS_INVALID_IMAGE_FORMAT;
  72         return;
  73     }
  74
  75     if (!(nt->FileHeader.Characteristics & IMAGE_FILE_DLL))
  76     {
  77         /* if we already have an executable, ignore this one */
  78         if (!main_module) main_module = module;
  79         return; /* don't create the modref here, will be done later on */
  80     }
  81
  82     RtlCreateUnicodeStringFromAsciiz(&wstr, filename);
  83     if (LdrGetDllHandle(0, 0, &wstr, &ret) == STATUS_SUCCESS)
  84         MESSAGE( "Warning: loading builtin %s, but native version already present. "
  85                  "Expect trouble.\n", filename );
  86     RtlFreeUnicodeString( &wstr );
  87
  88     len = GetSystemDirectoryA( NULL, 0 );
  89     if (!(fullname = RtlAllocateHeap( ntdll_get_process_heap(), 0, len + strlen(filename) + 1 )))
  90     {
  91         ERR( "can't load %s\n", filename );
  92         last_status = STATUS_NO_MEMORY;
  93         return;
  94     }
  95     GetSystemDirectoryA( fullname, len );
  96     strcat( fullname, "\\" );
  97     strcat( fullname, filename );
  98
  99     /* Create 32-bit MODREF */
 100     if (!(wm = PE_CreateModule( module, fullname, 0, 0, TRUE )))
 101     {
 102         ERR( "can't load %s\n", filename );
 103         RtlFreeHeap( ntdll_get_process_heap(), 0, fullname );
 104         last_status = STATUS_NO_MEMORY;
 105         return;
 106     }
 107     TRACE( "loaded %s %p %p\n", fullname, wm, module );
 108     RtlFreeHeap( ntdll_get_process_heap(), 0, fullname );
 109
 110     /* setup relay debugging entry points */
 111     if (TRACE_ON(relay)) RELAY_SetupDLL( (void *)module );
 112 }
 113
 114
 115 /***********************************************************************
 116  *           BUILTIN32_LoadLibraryExA
 117  *
 118  * Partly copied from the original PE_ version.
 119  *
 120  */
 121 NTSTATUS BUILTIN32_LoadLibraryExA(LPCSTR path, DWORD flags, WINE_MODREF** pwm)
 122 {
 123     char error[256], dllname[20], *p;
 124     int file_exists;
 125     LPCSTR name;
 126     void *handle;
 127
 128     /* Fix the name in case we have a full path and extension */
 129     name = path;
 130     if ((p = strrchr( name, '\\' ))) name = p + 1;
 131     if ((p = strrchr( name, '/' ))) name = p + 1;
 132
 133     if (strlen(name) >= sizeof(dllname)-4) return STATUS_NO_SUCH_FILE;
 134
 135     strcpy( dllname, name );
 136     p = strrchr( dllname, '.' );
 137     if (!p) strcat( dllname, ".dll" );
 138     for (p = dllname; *p; p++) *p = FILE_tolower(*p);
 139
 140     last_status = STATUS_SUCCESS;
 141     /* load_library will modify last_status. Note also that load_library can be
 142      * called several times, if the .so file we're loading has dependencies.
 143      * last_status will gather all the errors we may get while loading all these
 144      * libraries
 145      */
 146     if (!(handle = wine_dll_load( dllname, error, sizeof(error), &file_exists )))
 147     {
 148         if (!file_exists)
 149         {
 150             /* The file does not exist -> WARN() */
 151             WARN("cannot open .so lib for builtin %s: %s\n", name, error);
 152             return STATUS_NO_SUCH_FILE;
 153         }
 154         /* ERR() for all other errors (missing functions, ...) */
 155         ERR("failed to load .so lib for builtin %s: %s\n", name, error );
 156         return STATUS_PROCEDURE_NOT_FOUND;
 157     }
 158     if (last_status != STATUS_SUCCESS) return last_status;
 159
 160     if (!((*pwm) = MODULE_FindModule( path ))) *pwm = MODULE_FindModule( dllname );
 161     if (!*pwm)
 162     {
 163         ERR( "loaded .so but dll %s still not found - 16-bit dll or version conflict.\n", dllname );
 164         /* wine_dll_unload( handle );*/
 165         return STATUS_INVALID_IMAGE_FORMAT;
 166     }
 167     (*pwm)->dlhandle = handle;
 168     return STATUS_SUCCESS;
 169 }
 170
 171 /***********************************************************************
 172  *           BUILTIN32_Init
 173  *
 174  * Initialize loading callbacks and return HMODULE of main exe.
 175  * 'main' is the main exe in case it was already loaded from a PE file.
 176  */
 177 HMODULE BUILTIN32_LoadExeModule( HMODULE main )
 178 {
 179     main_module = main;
 180     last_status = STATUS_SUCCESS;
 181     wine_dll_set_callback( load_library );
 182     if (!main_module)
 183         MESSAGE( "No built-in EXE module loaded!  Did you create a .spec file?\n" );
 184     if (last_status != STATUS_SUCCESS)
 185         MESSAGE( "Error while processing initial modules\n");
 186
 187     return main_module;
 188 }