dlls/kernel32/tests/module.c

   1 /*
   2  * Unit tests for module/DLL/library API
   3  *
   4  * Copyright (c) 2004 Eric Pouech
   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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "wine/test.h"
  22 #include <windows.h>
  23
  24 static BOOL is_unicode_enabled = TRUE;
  25
  26 static BOOL cmpStrAW(const char* a, const WCHAR* b, DWORD lenA, DWORD lenB)
  27 {
  28     WCHAR       aw[1024];
  29
  30     DWORD len = MultiByteToWideChar( AreFileApisANSI() ? CP_ACP : CP_OEMCP, 0,
  31                                      a, lenA, aw, sizeof(aw) / sizeof(aw[0]) );
  32     if (len != lenB) return FALSE;
  33     return memcmp(aw, b, len * sizeof(WCHAR)) == 0;
  34 }
  35
  36 static void testGetModuleFileName(const char* name)
  37 {
  38     HMODULE     hMod;
  39     char        bufA[MAX_PATH];
  40     WCHAR       bufW[MAX_PATH];
  41     DWORD       len1A, len1W = 0, len2A, len2W = 0;
  42
  43     hMod = (name) ? GetModuleHandle(name) : NULL;
  44
  45     /* first test, with enough space in buffer */
  46     memset(bufA, '-', sizeof(bufA));
  47     len1A = GetModuleFileNameA(hMod, bufA, sizeof(bufA));
  48     ok(len1A > 0, "Getting module filename for handle %p\n", hMod);
  49
  50     if (is_unicode_enabled)
  51     {
  52         memset(bufW, '-', sizeof(bufW));
  53         len1W = GetModuleFileNameW(hMod, bufW, sizeof(bufW) / sizeof(WCHAR));
  54         ok(len1W > 0, "Getting module filename for handle %p\n", hMod);
  55     }
  56
  57     ok(len1A == strlen(bufA), "Unexpected length of GetModuleFilenameA (%d/%d)\n", len1A, lstrlenA(bufA));
  58
  59     if (is_unicode_enabled)
  60     {
  61         ok(len1W == lstrlenW(bufW), "Unexpected length of GetModuleFilenameW (%d/%d)\n", len1W, lstrlenW(bufW));
  62         ok(cmpStrAW(bufA, bufW, len1A, len1W), "Comparing GetModuleFilenameAW results\n");
  63     }
  64
  65     /* second test with a buffer too small */
  66     memset(bufA, '-', sizeof(bufA));
  67     len2A = GetModuleFileNameA(hMod, bufA, len1A / 2);
  68     ok(len2A > 0, "Getting module filename for handle %p\n", hMod);
  69
  70     if (is_unicode_enabled)
  71     {
  72         memset(bufW, '-', sizeof(bufW));
  73         len2W = GetModuleFileNameW(hMod, bufW, len1W / 2);
  74         ok(len2W > 0, "Getting module filename for handle %p\n", hMod);
  75         ok(cmpStrAW(bufA, bufW, len2A, len2W), "Comparing GetModuleFilenameAW results with buffer too small\n" );
  76         ok(len1W / 2 == len2W, "Correct length in GetModuleFilenameW with buffer too small (%d/%d)\n", len1W / 2, len2W);
  77     }
  78
  79     ok(len1A / 2 == len2A ||
  80        len1A / 2 == len2A + 1, /* Win9x */
  81        "Correct length in GetModuleFilenameA with buffer too small (%d/%d)\n", len1A / 2, len2A);
  82 }
  83
  84 static void testGetModuleFileName_Wrong(void)
  85 {
  86     char        bufA[MAX_PATH];
  87     WCHAR       bufW[MAX_PATH];
  88
  89     /* test wrong handle */
  90     if (is_unicode_enabled)
  91     {
  92         bufW[0] = '*';
  93         ok(GetModuleFileNameW((void*)0xffffffff, bufW, sizeof(bufW) / sizeof(WCHAR)) == 0, "Unexpected success in module handle\n");
  94         ok(bufW[0] == '*', "When failing, buffer shouldn't be written to\n");
  95     }
  96
  97     bufA[0] = '*';
  98     ok(GetModuleFileNameA((void*)0xffffffff, bufA, sizeof(bufA)) == 0, "Unexpected success in module handle\n");
  99     ok(bufA[0] == '*' ||
 100        bufA[0] == 0 /* Win9x */,
 101        "When failing, buffer shouldn't be written to\n");
 102 }
 103
 104 static void testLoadLibraryA(void)
 105 {
 106     HMODULE hModule, hModule1;
 107     FARPROC fp;
 108
 109     SetLastError(0xdeadbeef);
 110     hModule = LoadLibraryA("kernel32.dll");
 111     ok( hModule != NULL, "kernel32.dll should be loadable\n");
 112     ok( GetLastError() == 0xdeadbeef, "GetLastError should be 0xdeadbeef but is %d\n", GetLastError());
 113
 114     fp = GetProcAddress(hModule, "CreateFileA");
 115     ok( fp != NULL, "CreateFileA should be there\n");
 116     ok( GetLastError() == 0xdeadbeef, "GetLastError should be 0xdeadbeef but is %d\n", GetLastError());
 117
 118     SetLastError(0xdeadbeef);
 119     hModule1 = LoadLibraryA("kernel32   ");
 120     /* Only winNT does this */
 121     if (GetLastError() != ERROR_DLL_NOT_FOUND)
 122     {
 123         ok( hModule1 != NULL, "\"kernel32   \" should be loadable\n");
 124         ok( GetLastError() == 0xdeadbeef, "GetLastError should be 0xdeadbeef but is %d\n", GetLastError());
 125         ok( hModule == hModule1, "Loaded wrong module\n");
 126         FreeLibrary(hModule1);
 127     }
 128     FreeLibrary(hModule);
 129 }
 130
 131 static void testNestedLoadLibraryA(void)
 132 {
 133     static const char dllname[] = "shell32.dll";
 134     char path1[MAX_PATH], path2[MAX_PATH];
 135     HMODULE hModule1, hModule2, hModule3;
 136
 137     /* This is not really a Windows conformance test, but more a Wine
 138      * regression test. Wine's builtin dlls can be loaded from multiple paths,
 139      * and this test tries to make sure that Wine does not get confused and
 140      * really unloads the Unix .so file at the right time. Failure to do so
 141      * will result in the dll being unloadable.
 142      * This test must be done with a dll that can be unloaded, which means:
 143      * - it must not already be loaded
 144      * - it must not have a 16-bit counterpart
 145      */
 146     GetWindowsDirectory(path1, sizeof(path1));
 147     strcat(path1, "\\system\\");
 148     strcat(path1, dllname);
 149     hModule1 = LoadLibraryA(path1);
 150     if (!hModule1)
 151     {
 152         /* We must be on Windows NT, so we cannot test */
 153         return;
 154     }
 155
 156     GetWindowsDirectory(path2, sizeof(path2));
 157     strcat(path2, "\\system32\\");
 158     strcat(path2, dllname);
 159     hModule2 = LoadLibraryA(path2);
 160     if (!hModule2)
 161     {
 162         /* We must be on Windows 9x, so we cannot test */
 163         ok(FreeLibrary(hModule1), "FreeLibrary() failed\n");
 164         return;
 165     }
 166
 167     /* The first LoadLibrary() call may have registered the dll under the
 168      * system32 path. So load it, again, under the '...\system\...' path so
 169      * Wine does not immediately notice that it is already loaded.
 170      */
 171     hModule3 = LoadLibraryA(path1);
 172     ok(hModule3 != NULL, "LoadLibrary(%s) failed\n", path1);
 173
 174     /* Now fully unload the dll */
 175     ok(FreeLibrary(hModule3), "FreeLibrary() failed\n");
 176     ok(FreeLibrary(hModule2), "FreeLibrary() failed\n");
 177     ok(FreeLibrary(hModule1), "FreeLibrary() failed\n");
 178     ok(GetModuleHandle(dllname) == NULL, "%s was not fully unloaded\n", dllname);
 179
 180     /* Try to load the dll again, if refcounting is ok, this should work */
 181     hModule1 = LoadLibraryA(path1);
 182     ok(hModule1 != NULL, "LoadLibrary(%s) failed\n", path1);
 183     if (hModule1 != NULL)
 184         ok(FreeLibrary(hModule1), "FreeLibrary() failed\n");
 185 }
 186
 187 static void testLoadLibraryA_Wrong(void)
 188 {
 189     HMODULE hModule;
 190
 191     /* Try to load a nonexistent dll */
 192     SetLastError(0xdeadbeef);
 193     hModule = LoadLibraryA("non_ex_pv.dll");
 194     ok( !hModule, "non_ex_pv.dll should be not loadable\n");
 195     ok( GetLastError() == ERROR_MOD_NOT_FOUND || GetLastError() == ERROR_DLL_NOT_FOUND,
 196         "Expected ERROR_MOD_NOT_FOUND or ERROR_DLL_NOT_FOUND (win9x), got %d\n", GetLastError());
 197
 198     /* Just in case */
 199     FreeLibrary(hModule);
 200 }
 201
 202 static void testGetProcAddress_Wrong(void)
 203 {
 204     FARPROC fp;
 205
 206     SetLastError(0xdeadbeef);
 207     fp = GetProcAddress(NULL, "non_ex_call");
 208     ok( !fp, "non_ex_call should not be found\n");
 209     ok( GetLastError() == ERROR_PROC_NOT_FOUND || GetLastError() == ERROR_INVALID_HANDLE,
 210         "Expected ERROR_PROC_NOT_FOUND or ERROR_INVALID_HANDLE(win9x), got %d\n", GetLastError());
 211
 212     SetLastError(0xdeadbeef);
 213     fp = GetProcAddress((HMODULE)0xdeadbeef, "non_ex_call");
 214     ok( !fp, "non_ex_call should not be found\n");
 215     ok( GetLastError() == ERROR_MOD_NOT_FOUND || GetLastError() == ERROR_INVALID_HANDLE,
 216         "Expected ERROR_MOD_NOT_FOUND or ERROR_INVALID_HANDLE(win9x), got %d\n", GetLastError());
 217 }
 218
 219 static void testLoadLibraryEx(void)
 220 {
 221     CHAR path[MAX_PATH];
 222     HMODULE hmodule;
 223     HANDLE hfile;
 224
 225     hfile = CreateFileA("testfile.dll", GENERIC_READ | GENERIC_WRITE,
 226                         FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
 227                         NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
 228     ok(hfile != INVALID_HANDLE_VALUE, "Expected a valid file handle\n");
 229
 230     /* NULL lpFileName */
 231     SetLastError(0xdeadbeef);
 232     hmodule = LoadLibraryExA(NULL, NULL, 0);
 233     ok(hmodule == 0, "Expected 0, got %p\n", hmodule);
 234     ok(GetLastError() == ERROR_MOD_NOT_FOUND,
 235        "Expected ERROR_MOD_NOT_FOUND, got %d\n", GetLastError());
 236
 237     /* empty lpFileName */
 238     SetLastError(0xdeadbeef);
 239     hmodule = LoadLibraryExA("", NULL, 0);
 240     ok(hmodule == 0, "Expected 0, got %p\n", hmodule);
 241     ok(GetLastError() == ERROR_MOD_NOT_FOUND,
 242        "Expected ERROR_MOD_NOT_FOUND, got %d\n", GetLastError());
 243
 244     /* hFile is non-NULL */
 245     SetLastError(0xdeadbeef);
 246     hmodule = LoadLibraryExA("testfile.dll", hfile, 0);
 247     ok(hmodule == 0, "Expected 0, got %p\n", hmodule);
 248     todo_wine
 249     {
 250         ok(GetLastError() == ERROR_SHARING_VIOLATION,
 251            "Expected ERROR_SHARING_VIOLATION, got %d\n", GetLastError());
 252     }
 253
 254     /* has nothing to do with hFile */
 255     SetLastError(0xdeadbeef);
 256     hmodule = LoadLibraryExA("testfile.dll", NULL, 0);
 257     ok(hmodule == 0, "Expected 0, got %p\n", hmodule);
 258     todo_wine
 259     {
 260         ok(GetLastError() == ERROR_SHARING_VIOLATION,
 261            "Expected ERROR_SHARING_VIOLATION, got %d\n", GetLastError());
 262     }
 263
 264     /* one last try with hFile */
 265     SetLastError(0xdeadbeef);
 266     hmodule = LoadLibraryExA(NULL, hfile, 0);
 267     ok(hmodule == 0, "Expected 0, got %p\n", hmodule);
 268     ok(GetLastError() == ERROR_MOD_NOT_FOUND,
 269        "Expected ERROR_MOD_NOT_FOUND, got %d\n", GetLastError());
 270
 271     CloseHandle(hfile);
 272
 273     /* load empty file */
 274     SetLastError(0xdeadbeef);
 275     hmodule = LoadLibraryExA("testfile.dll", NULL, LOAD_LIBRARY_AS_DATAFILE);
 276     ok(hmodule == 0, "Expected 0, got %p\n", hmodule);
 277     todo_wine
 278     {
 279         ok(GetLastError() == ERROR_FILE_INVALID,
 280           "Expected ERROR_FILE_INVALID, got %d\n", GetLastError());
 281     }
 282
 283     DeleteFileA("testfile.dll");
 284
 285     GetSystemDirectoryA(path, MAX_PATH);
 286     if (path[lstrlenA(path) - 1] != '\\')
 287         lstrcatA(path, "\\");
 288     lstrcatA(path, "kernel32.dll");
 289
 290     /* load kernel32.dll with an absolute path */
 291     SetLastError(0xdeadbeef);
 292     hmodule = LoadLibraryExA(path, NULL, LOAD_LIBRARY_AS_DATAFILE);
 293     ok(hmodule != 0, "Expected valid module handle\n");
 294     ok(GetLastError() == 0xdeadbeef,
 295        "Expected 0xdeadbeef, got %d\n", GetLastError());
 296
 297     CloseHandle(hmodule);
 298
 299     /* load kernel32.dll with no path */
 300     SetLastError(0xdeadbeef);
 301     hmodule = LoadLibraryExA("kernel32.dll", NULL, LOAD_LIBRARY_AS_DATAFILE);
 302     ok(hmodule != 0, "Expected valid module handle\n");
 303     ok(GetLastError() == 0xdeadbeef,
 304        "Expected 0xdeadbeef, got %d\n", GetLastError());
 305
 306     CloseHandle(hmodule);
 307
 308     GetCurrentDirectoryA(MAX_PATH, path);
 309     if (path[lstrlenA(path) - 1] != '\\')
 310         lstrcatA(path, "\\");
 311     lstrcatA(path, "kernel32.dll");
 312
 313     /* load kernel32.dll with an absolute path that does not exist */
 314     SetLastError(0xdeadbeef);
 315     hmodule = LoadLibraryExA(path, NULL, LOAD_LIBRARY_AS_DATAFILE);
 316     todo_wine
 317     {
 318         ok(hmodule == 0, "Expected 0, got %p\n", hmodule);
 319     }
 320     ok(GetLastError() == ERROR_FILE_NOT_FOUND,
 321        "Expected ERROR_FILE_NOT_FOUND, got %d\n", GetLastError());
 322 }
 323
 324 START_TEST(module)
 325 {
 326     WCHAR filenameW[MAX_PATH];
 327
 328     /* Test if we can use GetModuleFileNameW */
 329
 330     SetLastError(0xdeadbeef);
 331     GetModuleFileNameW(NULL, filenameW, MAX_PATH);
 332     if (GetLastError() == ERROR_CALL_NOT_IMPLEMENTED)
 333     {
 334         trace("GetModuleFileNameW not existing on this platform, skipping W-calls\n");
 335         is_unicode_enabled = FALSE;
 336     }
 337
 338     testGetModuleFileName(NULL);
 339     testGetModuleFileName("kernel32.dll");
 340     testGetModuleFileName_Wrong();
 341
 342     testLoadLibraryA();
 343     testNestedLoadLibraryA();
 344     testLoadLibraryA_Wrong();
 345     testGetProcAddress_Wrong();
 346     testLoadLibraryEx();
 347 }