dlls/kernel32/tests/toolhelp.c

   1 /*
   2  * Toolhelp
   3  *
   4  * Copyright 2005 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 <stdarg.h>
  22 #include <stdlib.h>
  23 #include <stdio.h>
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "tlhelp32.h"
  28 #include "wine/test.h"
  29 #include "winuser.h"
  30
  31 static char     selfname[MAX_PATH];
  32
  33 /* Some functions are only in later versions of kernel32.dll */
  34 static HANDLE (WINAPI *pCreateToolhelp32Snapshot)(DWORD, DWORD);
  35 static BOOL (WINAPI *pModule32First)(HANDLE, LPMODULEENTRY32);
  36 static BOOL (WINAPI *pModule32Next)(HANDLE, LPMODULEENTRY32);
  37 static BOOL (WINAPI *pProcess32First)(HANDLE, LPPROCESSENTRY32);
  38 static BOOL (WINAPI *pProcess32Next)(HANDLE, LPPROCESSENTRY32);
  39 static BOOL (WINAPI *pThread32First)(HANDLE, LPTHREADENTRY32);
  40 static BOOL (WINAPI *pThread32Next)(HANDLE, LPTHREADENTRY32);
  41
  42 /* 1 minute should be more than enough */
  43 #define WAIT_TIME       (60 * 1000)
  44
  45 static DWORD WINAPI sub_thread(void* pmt)
  46 {
  47     DWORD w = WaitForSingleObject((HANDLE)pmt, WAIT_TIME);
  48     return w;
  49 }
  50
  51 /******************************************************************
  52  *              init
  53  *
  54  * generates basic information like:
  55  *      selfname:       the way to reinvoke ourselves
  56  * returns:
  57  *      -1      on error
  58  *      0       if parent
  59  *      doesn't return if child
  60  */
  61 static int     init(void)
  62 {
  63     int                 argc;
  64     char**              argv;
  65     HANDLE              ev1, ev2, ev3, hThread;
  66     DWORD               w, tid;
  67
  68     argc = winetest_get_mainargs( &argv );
  69     strcpy(selfname, argv[0]);
  70
  71     switch (argc)
  72     {
  73     case 2: /* the test program */
  74         return 0;
  75     case 4: /* the sub-process */
  76         ev1 = (HANDLE)atoi(argv[2]);
  77         ev2 = (HANDLE)atoi(argv[3]);
  78         ev3 = CreateEvent(NULL, FALSE, FALSE, NULL);
  79
  80         if (ev3 == NULL) ExitProcess(WAIT_ABANDONED);
  81         hThread = CreateThread(NULL, 0, sub_thread, ev3, 0, &tid);
  82         if (hThread == NULL) ExitProcess(WAIT_ABANDONED);
  83         if (!LoadLibraryA("shell32.dll")) ExitProcess(WAIT_ABANDONED);
  84
  85         /* signal init of sub-process is done */
  86         SetEvent(ev1);
  87         /* wait for parent to have done all its queries */
  88         w = WaitForSingleObject(ev2, WAIT_TIME);
  89         if (w != WAIT_OBJECT_0) ExitProcess(w);
  90         /* signal sub-thread to terminate */
  91         SetEvent(ev3);
  92         w = WaitForSingleObject(hThread, WAIT_TIME);
  93         if (w != WAIT_OBJECT_0) ExitProcess(w);
  94         GetExitCodeThread(hThread, &w);
  95         ExitProcess(w);
  96     default:
  97         return -1;
  98     }
  99 }
 100
 101 static void test_process(DWORD curr_pid, DWORD sub_pcs_pid)
 102 {
 103     HANDLE              hSnapshot;
 104     PROCESSENTRY32      pe;
 105     MODULEENTRY32       me;
 106     unsigned            found = 0;
 107     int                 num = 0;
 108     int                 childpos = -1;
 109
 110     hSnapshot = pCreateToolhelp32Snapshot( TH32CS_SNAPPROCESS, 0 );
 111     ok(hSnapshot != NULL, "Cannot create snapshot\n");
 112
 113     /* check that this current process is enumerated */
 114     pe.dwSize = sizeof(pe);
 115     if (pProcess32First( hSnapshot, &pe ))
 116     {
 117         do
 118         {
 119             if (pe.th32ProcessID == curr_pid) found++;
 120             if (pe.th32ProcessID == sub_pcs_pid) { childpos = num; found++; }
 121             trace("PID=%x %s\n", pe.th32ProcessID, pe.szExeFile);
 122             num++;
 123         } while (pProcess32Next( hSnapshot, &pe ));
 124     }
 125     ok(found == 2, "couldn't find self and/or sub-process in process list\n");
 126
 127     /* check that first really resets the enumeration */
 128     found = 0;
 129     if (pProcess32First( hSnapshot, &pe ))
 130     {
 131         do
 132         {
 133             if (pe.th32ProcessID == curr_pid) found++;
 134             if (pe.th32ProcessID == sub_pcs_pid) found++;
 135             trace("PID=%x %s\n", pe.th32ProcessID, pe.szExeFile);
 136             num--;
 137         } while (pProcess32Next( hSnapshot, &pe ));
 138     }
 139     ok(found == 2, "couldn't find self and/or sub-process in process list\n");
 140     ok(!num, "mismatch in counting\n");
 141
 142     /* one broken program does Process32First() and does not expect anything
 143      * interesting to be there, especially not the just forked off child */
 144     ok (childpos !=0, "child is not expected to be at position 0.\n");
 145
 146     me.dwSize = sizeof(me);
 147     ok(!pModule32First( hSnapshot, &me ), "shouldn't return a module\n");
 148
 149     CloseHandle(hSnapshot);
 150     ok(!pProcess32First( hSnapshot, &pe ), "shouldn't return a process\n");
 151 }
 152
 153 static void test_thread(DWORD curr_pid, DWORD sub_pcs_pid)
 154 {
 155     HANDLE              hSnapshot;
 156     THREADENTRY32       te;
 157     MODULEENTRY32       me;
 158     int                 num = 0;
 159     unsigned            curr_found = 0;
 160     unsigned            sub_found = 0;
 161
 162     hSnapshot = pCreateToolhelp32Snapshot( TH32CS_SNAPTHREAD, 0 );
 163     ok(hSnapshot != NULL, "Cannot create snapshot\n");
 164
 165     /* check that this current process is enumerated */
 166     te.dwSize = sizeof(te);
 167     if (pThread32First( hSnapshot, &te ))
 168     {
 169         do
 170         {
 171             if (te.th32OwnerProcessID == curr_pid) curr_found++;
 172             if (te.th32OwnerProcessID == sub_pcs_pid) sub_found++;
 173             if (winetest_debug > 1)
 174                 trace("PID=%x TID=%x %d\n", te.th32OwnerProcessID, te.th32ThreadID, te.tpBasePri);
 175             num++;
 176         } while (pThread32Next( hSnapshot, &te ));
 177     }
 178     ok(curr_found == 1, "couldn't find self in thread list\n");
 179     ok(sub_found == 2, "couldn't find sub-process thread's in thread list\n");
 180
 181     /* check that first really resets enumeration */
 182     curr_found = 0;
 183     sub_found = 0;
 184     if (pThread32First( hSnapshot, &te ))
 185     {
 186         do
 187         {
 188             if (te.th32OwnerProcessID == curr_pid) curr_found++;
 189             if (te.th32OwnerProcessID == sub_pcs_pid) sub_found++;
 190             if (winetest_debug > 1)
 191                 trace("PID=%x TID=%x %d\n", te.th32OwnerProcessID, te.th32ThreadID, te.tpBasePri);
 192             num--;
 193         } while (pThread32Next( hSnapshot, &te ));
 194     }
 195     ok(curr_found == 1, "couldn't find self in thread list\n");
 196     ok(sub_found == 2, "couldn't find sub-process thread's in thread list\n");
 197
 198     me.dwSize = sizeof(me);
 199     ok(!pModule32First( hSnapshot, &me ), "shouldn't return a module\n");
 200
 201     CloseHandle(hSnapshot);
 202     ok(!pThread32First( hSnapshot, &te ), "shouldn't return a thread\n");
 203 }
 204
 205 static const char* curr_expected_modules[] =
 206 {
 207     "kernel32.dll",
 208     "kernel32_test.exe"
 209     /* FIXME: could test for ntdll on NT and Wine */
 210 };
 211 static const char* sub_expected_modules[] =
 212 {
 213     "kernel32.dll",
 214     "kernel32_test.exe",
 215     "shell32.dll"
 216     /* FIXME: could test for ntdll on NT and Wine */
 217 };
 218 #define NUM_OF(x) (sizeof(x) / sizeof(x[0]))
 219
 220 static void test_module(DWORD pid, const char* expected[], unsigned num_expected)
 221 {
 222     HANDLE              hSnapshot;
 223     PROCESSENTRY32      pe;
 224     THREADENTRY32       te;
 225     MODULEENTRY32       me;
 226     unsigned            found[32];
 227     unsigned            i;
 228     int                 num = 0;
 229
 230     ok(NUM_OF(found) >= num_expected, "Internal: bump found[] size\n");
 231
 232     hSnapshot = pCreateToolhelp32Snapshot( TH32CS_SNAPMODULE, pid );
 233     ok(hSnapshot != NULL, "Cannot create snapshot\n");
 234
 235     for (i = 0; i < num_expected; i++) found[i] = 0;
 236     me.dwSize = sizeof(me);
 237     if (pModule32First( hSnapshot, &me ))
 238     {
 239         do
 240         {
 241             trace("PID=%x base=%p size=%x %s %s\n",
 242                   me.th32ProcessID, me.modBaseAddr, me.modBaseSize, me.szExePath, me.szModule);
 243             ok(me.th32ProcessID == pid, "wrong returned process id\n");
 244             for (i = 0; i < num_expected; i++)
 245                 if (!lstrcmpi(expected[i], me.szModule)) found[i]++;
 246             num++;
 247         } while (pModule32Next( hSnapshot, &me ));
 248     }
 249     for (i = 0; i < num_expected; i++)
 250         ok(found[i] == 1, "Module %s is %s\n",
 251            expected[i], found[i] ? "listed more than once" : "not listed");
 252
 253     /* check that first really resets the enumeration */
 254     for (i = 0; i < num_expected; i++) found[i] = 0;
 255     me.dwSize = sizeof(me);
 256     if (pModule32First( hSnapshot, &me ))
 257     {
 258         do
 259         {
 260             trace("PID=%x base=%p size=%x %s %s\n",
 261                   me.th32ProcessID, me.modBaseAddr, me.modBaseSize, me.szExePath, me.szModule);
 262             for (i = 0; i < num_expected; i++)
 263                 if (!lstrcmpi(expected[i], me.szModule)) found[i]++;
 264             num--;
 265         } while (pModule32Next( hSnapshot, &me ));
 266     }
 267     for (i = 0; i < num_expected; i++)
 268         ok(found[i] == 1, "Module %s is %s\n",
 269            expected[i], found[i] ? "listed more than once" : "not listed");
 270     ok(!num, "mismatch in counting\n");
 271
 272     pe.dwSize = sizeof(pe);
 273     ok(!pProcess32First( hSnapshot, &pe ), "shouldn't return a process\n");
 274
 275     te.dwSize = sizeof(te);
 276     ok(!pThread32First( hSnapshot, &te ), "shouldn't return a thread\n");
 277
 278     CloseHandle(hSnapshot);
 279     ok(!pModule32First( hSnapshot, &me ), "shouldn't return a module\n");
 280 }
 281
 282 START_TEST(toolhelp)
 283 {
 284     DWORD               pid = GetCurrentProcessId();
 285     int                 r;
 286     char                buffer[MAX_PATH];
 287     SECURITY_ATTRIBUTES sa;
 288     PROCESS_INFORMATION info;
 289     STARTUPINFOA        startup;
 290     HANDLE              ev1, ev2;
 291     DWORD               w;
 292     HANDLE              hkernel32 = GetModuleHandleA("kernel32");
 293
 294     pCreateToolhelp32Snapshot = (VOID *) GetProcAddress(hkernel32, "CreateToolhelp32Snapshot");
 295     pModule32First = (VOID *) GetProcAddress(hkernel32, "Module32First");
 296     pModule32Next = (VOID *) GetProcAddress(hkernel32, "Module32Next");
 297     pProcess32First = (VOID *) GetProcAddress(hkernel32, "Process32First");
 298     pProcess32Next = (VOID *) GetProcAddress(hkernel32, "Process32Next");
 299     pThread32First = (VOID *) GetProcAddress(hkernel32, "Thread32First");
 300     pThread32Next = (VOID *) GetProcAddress(hkernel32, "Thread32Next");
 301
 302     if (!pCreateToolhelp32Snapshot ||
 303         !pModule32First || !pModule32Next ||
 304         !pProcess32First || !pProcess32Next ||
 305         !pThread32First || !pThread32Next)
 306     {
 307         skip("Needed functions are not available, most likely running on Windows NT\n");
 308         return;
 309     }
 310
 311     r = init();
 312     ok(r == 0, "Basic init of sub-process test\n");
 313     if (r != 0) return;
 314
 315     sa.nLength = sizeof(sa);
 316     sa.lpSecurityDescriptor = NULL;
 317     sa.bInheritHandle = TRUE;
 318
 319     ev1 = CreateEvent(&sa, FALSE, FALSE, NULL);
 320     ev2 = CreateEvent(&sa, FALSE, FALSE, NULL);
 321     ok (ev1 != NULL && ev2 != NULL, "Couldn't create events\n");
 322     memset(&startup, 0, sizeof(startup));
 323     startup.cb = sizeof(startup);
 324     startup.dwFlags = STARTF_USESHOWWINDOW;
 325     startup.wShowWindow = SW_SHOWNORMAL;
 326
 327     sprintf(buffer, "%s tests/toolhelp.c %u %u", selfname, (DWORD)ev1, (DWORD)ev2);
 328     ok(CreateProcessA(NULL, buffer, NULL, NULL, TRUE, 0, NULL, NULL, &startup, &info), "CreateProcess\n");
 329     /* wait for child to be initialized */
 330     w = WaitForSingleObject(ev1, WAIT_TIME);
 331     ok(w == WAIT_OBJECT_0, "Failed to wait on sub-process startup\n");
 332
 333     test_process(pid, info.dwProcessId);
 334     test_thread(pid, info.dwProcessId);
 335     test_module(pid, curr_expected_modules, NUM_OF(curr_expected_modules));
 336     test_module(info.dwProcessId, sub_expected_modules, NUM_OF(sub_expected_modules));
 337
 338     SetEvent(ev2);
 339     winetest_wait_child_process( info.hProcess );
 340 }