dlls/kernel32/tests/mailslot.c

   1 /*
   2  *  Mailslot regression test
   3  *
   4  *  Copyright 2003 Mike McCormack
   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
  28 #include "wine/test.h"
  29
  30 static const char szmspath[] = "\\\\.\\mailslot\\wine_mailslot_test";
  31
  32 static int mailslot_test(void)
  33 {
  34     HANDLE hSlot, hSlot2, hWriter, hWriter2;
  35     unsigned char buffer[16];
  36     DWORD count, dwMax, dwNext, dwMsgCount, dwTimeout;
  37     BOOL ret;
  38
  39     /* sanity check on GetMailslotInfo */
  40     dwMax = dwNext = dwMsgCount = dwTimeout = 0;
  41     ok( !GetMailslotInfo( INVALID_HANDLE_VALUE, &dwMax, &dwNext,
  42             &dwMsgCount, &dwTimeout ), "getmailslotinfo succeeded\n");
  43
  44     /* open a mailslot that doesn't exist */
  45     hWriter = CreateFile(szmspath, GENERIC_READ|GENERIC_WRITE,
  46                              FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
  47     ok( hWriter == INVALID_HANDLE_VALUE, "nonexistent mailslot\n");
  48
  49     /* open a mailslot without the right name */
  50     hSlot = CreateMailslot( "blah", 0, 0, NULL );
  51     ok( hSlot == INVALID_HANDLE_VALUE,
  52             "Created mailslot with invalid name\n");
  53     ok( GetLastError() == ERROR_INVALID_NAME,
  54             "error should be ERROR_INVALID_NAME\n");
  55
  56     /* open a mailslot with a null name */
  57     hSlot = CreateMailslot( NULL, 0, 0, NULL );
  58     ok( hSlot == INVALID_HANDLE_VALUE, "Created mailslot with invalid name\n");
  59     ok( GetLastError() == ERROR_PATH_NOT_FOUND, "error should be ERROR_PATH_NOT_FOUND\n");
  60
  61     /* valid open, but with wacky parameters ... then check them */
  62     hSlot = CreateMailslot( szmspath, -1, -1, NULL );
  63     ok( hSlot != INVALID_HANDLE_VALUE , "mailslot with valid name failed\n");
  64     dwMax = dwNext = dwMsgCount = dwTimeout = 0;
  65     ok( GetMailslotInfo( hSlot, &dwMax, &dwNext, &dwMsgCount, &dwTimeout ),
  66            "getmailslotinfo failed\n");
  67     ok( dwMax == ~0U, "dwMax incorrect\n");
  68     ok( dwNext == MAILSLOT_NO_MESSAGE, "dwNext incorrect\n");
  69     ok( dwMsgCount == 0, "dwMsgCount incorrect\n");
  70     ok( dwTimeout == ~0U, "dwTimeout incorrect\n");
  71     ok( GetMailslotInfo( hSlot, NULL, NULL, NULL, NULL ),
  72             "getmailslotinfo failed\n");
  73     ok( CloseHandle(hSlot), "failed to close mailslot\n");
  74
  75     /* now open it for real */
  76     hSlot = CreateMailslot( szmspath, 0, 0, NULL );
  77     ok( hSlot != INVALID_HANDLE_VALUE , "valid mailslot failed\n");
  78
  79     /* try and read/write to it */
  80     count = 0;
  81     memset(buffer, 0, sizeof buffer);
  82     ret = ReadFile( hSlot, buffer, sizeof buffer, &count, NULL);
  83     ok( !ret, "slot read\n");
  84     if (!ret) ok( GetLastError() == ERROR_SEM_TIMEOUT, "wrong error %u\n", GetLastError() );
  85     else ok( count == 0, "wrong count %u\n", count );
  86     ok( !WriteFile( hSlot, buffer, sizeof buffer, &count, NULL),
  87             "slot write\n");
  88     ok( GetLastError() == ERROR_ACCESS_DENIED, "wrong error %u\n", GetLastError() );
  89
  90     /* now try and open the client, but with the wrong sharing mode */
  91     hWriter = CreateFile(szmspath, GENERIC_WRITE,
  92                              0, NULL, OPEN_EXISTING, 0, NULL);
  93     ok( hWriter != INVALID_HANDLE_VALUE /* vista */ || GetLastError() == ERROR_SHARING_VIOLATION,
  94         "error should be ERROR_SHARING_VIOLATION got %p / %u\n", hWriter, GetLastError());
  95     if (hWriter != INVALID_HANDLE_VALUE) CloseHandle( hWriter );
  96
  97     /* now open the client with the correct sharing mode */
  98     hWriter = CreateFile(szmspath, GENERIC_READ|GENERIC_WRITE,
  99                              FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
 100     ok( hWriter != INVALID_HANDLE_VALUE, "existing mailslot err %u\n", GetLastError());
 101
 102     /*
 103      * opening a client should make no difference to
 104      * whether we can read or write the mailslot
 105      */
 106     ret = ReadFile( hSlot, buffer, sizeof buffer/2, &count, NULL);
 107     ok( !ret, "slot read\n");
 108     if (!ret) ok( GetLastError() == ERROR_SEM_TIMEOUT, "wrong error %u\n", GetLastError() );
 109     else ok( count == 0, "wrong count %u\n", count );
 110     ok( !WriteFile( hSlot, buffer, sizeof buffer/2, &count, NULL),
 111             "slot write\n");
 112     ok( GetLastError() == ERROR_ACCESS_DENIED, "wrong error %u\n", GetLastError() );
 113
 114     /*
 115      * we can't read from this client,
 116      * but we should be able to write to it
 117      */
 118     ok( !ReadFile( hWriter, buffer, sizeof buffer/2, &count, NULL),
 119             "can read client\n");
 120     ok( GetLastError() == ERROR_INVALID_PARAMETER || GetLastError() == ERROR_ACCESS_DENIED,
 121             "wrong error %u\n", GetLastError() );
 122     ok( WriteFile( hWriter, buffer, sizeof buffer/2, &count, NULL),
 123             "can't write client\n");
 124     ok( !ReadFile( hWriter, buffer, sizeof buffer/2, &count, NULL),
 125             "can read client\n");
 126     ok( GetLastError() == ERROR_INVALID_PARAMETER || GetLastError() == ERROR_ACCESS_DENIED,
 127             "wrong error %u\n", GetLastError() );
 128
 129     /*
 130      * seeing as there's something in the slot,
 131      * we should be able to read it once
 132      */
 133     ok( ReadFile( hSlot, buffer, sizeof buffer, &count, NULL),
 134             "slot read\n");
 135     ok( count == (sizeof buffer/2), "short read\n" );
 136
 137     /* but not again */
 138     ret = ReadFile( hSlot, buffer, sizeof buffer, &count, NULL);
 139     ok( !ret, "slot read\n");
 140     if (!ret) ok( GetLastError() == ERROR_SEM_TIMEOUT, "wrong error %u\n", GetLastError() );
 141     else ok( count == 0, "wrong count %u\n", count );
 142
 143     /* now try open another writer... should fail */
 144     hWriter2 = CreateFile(szmspath, GENERIC_READ|GENERIC_WRITE,
 145                      FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
 146     /* succeeds on vista, don't test */
 147     if (hWriter2 != INVALID_HANDLE_VALUE) CloseHandle( hWriter2 );
 148
 149     /* now try open another as a reader ... also fails */
 150     hWriter2 = CreateFile(szmspath, GENERIC_READ,
 151                      FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
 152     /* succeeds on vista, don't test */
 153     if (hWriter2 != INVALID_HANDLE_VALUE) CloseHandle( hWriter2 );
 154
 155     /* now try open another as a writer ... still fails */
 156     hWriter2 = CreateFile(szmspath, GENERIC_WRITE,
 157                      FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
 158     /* succeeds on vista, don't test */
 159     if (hWriter2 != INVALID_HANDLE_VALUE) CloseHandle( hWriter2 );
 160
 161     /* now open another one */
 162     hSlot2 = CreateMailslot( szmspath, 0, 0, NULL );
 163     ok( hSlot2 == INVALID_HANDLE_VALUE , "opened two mailslots\n");
 164
 165     /* close the client again */
 166     ok( CloseHandle( hWriter ), "closing the client\n");
 167
 168     /*
 169      * now try reopen it with slightly different permissions ...
 170      * shared writing
 171      */
 172     hWriter = CreateFile(szmspath, GENERIC_WRITE,
 173               FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
 174     ok( hWriter != INVALID_HANDLE_VALUE, "sharing writer\n");
 175
 176     /*
 177      * now try open another as a writer ...
 178      * but don't share with the first ... fail
 179      */
 180     hWriter2 = CreateFile(szmspath, GENERIC_WRITE,
 181                      FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
 182     /* succeeds on vista, don't test */
 183     if (hWriter2 != INVALID_HANDLE_VALUE) CloseHandle( hWriter2 );
 184
 185     /* now try open another as a writer ... and share with the first */
 186     hWriter2 = CreateFile(szmspath, GENERIC_WRITE,
 187               FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
 188     ok( hWriter2 != INVALID_HANDLE_VALUE, "2nd sharing writer\n");
 189
 190     /* check the mailslot info */
 191     dwMax = dwNext = dwMsgCount = dwTimeout = 0;
 192     ok( GetMailslotInfo( hSlot, &dwMax, &dwNext, &dwMsgCount, &dwTimeout ),
 193         "getmailslotinfo failed\n");
 194     ok( dwNext == MAILSLOT_NO_MESSAGE, "dwNext incorrect\n");
 195     ok( dwMax == 0, "dwMax incorrect\n");
 196     ok( dwMsgCount == 0, "dwMsgCount incorrect\n");
 197     ok( dwTimeout == 0, "dwTimeout incorrect\n");
 198
 199     /* check there's still no data */
 200     ret = ReadFile( hSlot, buffer, sizeof buffer, &count, NULL);
 201     ok( !ret, "slot read\n");
 202     if (!ret) ok( GetLastError() == ERROR_SEM_TIMEOUT, "wrong error %u\n", GetLastError() );
 203     else ok( count == 0, "wrong count %u\n", count );
 204
 205     /* write two messages */
 206     buffer[0] = 'a';
 207     ok( WriteFile( hWriter, buffer, 1, &count, NULL), "1st write failed\n");
 208
 209     /* check the mailslot info */
 210     dwNext = dwMsgCount = 0;
 211     ok( GetMailslotInfo( hSlot, NULL, &dwNext, &dwMsgCount, NULL ),
 212         "getmailslotinfo failed\n");
 213     ok( dwNext == 1, "dwNext incorrect\n");
 214     ok( dwMsgCount == 1, "dwMsgCount incorrect\n");
 215
 216     buffer[0] = 'b';
 217     buffer[1] = 'c';
 218     ok( WriteFile( hWriter2, buffer, 2, &count, NULL), "2nd write failed\n");
 219
 220     /* check the mailslot info */
 221     dwNext = dwMsgCount = 0;
 222     ok( GetMailslotInfo( hSlot, NULL, &dwNext, &dwMsgCount, NULL ),
 223         "getmailslotinfo failed\n");
 224     ok( dwNext == 1, "dwNext incorrect\n");
 225     todo_wine {
 226     ok( dwMsgCount == 2, "dwMsgCount incorrect\n");
 227     }
 228
 229     /* write a 3rd message with zero size */
 230     ok( WriteFile( hWriter2, buffer, 0, &count, NULL), "3rd write failed\n");
 231
 232     /* check the mailslot info */
 233     dwNext = dwMsgCount = 0;
 234     ok( GetMailslotInfo( hSlot, NULL, &dwNext, &dwMsgCount, NULL ),
 235         "getmailslotinfo failed\n");
 236     ok( dwNext == 1, "dwNext incorrect\n");
 237     todo_wine
 238         ok( dwMsgCount == 3, "dwMsgCount incorrect %u\n", dwMsgCount);
 239
 240     buffer[0]=buffer[1]=0;
 241
 242     /*
 243      * then check that they come out with the correct order and size,
 244      * then the slot is empty
 245      */
 246     ok( ReadFile( hSlot, buffer, sizeof buffer, &count, NULL),
 247         "1st slot read failed\n");
 248     ok( count == 1, "failed to get 1st message\n");
 249     ok( buffer[0] == 'a', "1st message wrong\n");
 250
 251     /* check the mailslot info */
 252     dwNext = dwMsgCount = 0;
 253     ok( GetMailslotInfo( hSlot, NULL, &dwNext, &dwMsgCount, NULL ),
 254         "getmailslotinfo failed\n");
 255     ok( dwNext == 2, "dwNext incorrect\n");
 256     todo_wine {
 257         ok( dwMsgCount == 2, "dwMsgCount incorrect %u\n", dwMsgCount);
 258     }
 259
 260     /* read the second message */
 261     ok( ReadFile( hSlot, buffer, sizeof buffer, &count, NULL),
 262         "2nd slot read failed\n");
 263     ok( count == 2, "failed to get 2nd message\n");
 264     ok( ( buffer[0] == 'b' ) && ( buffer[1] == 'c' ), "2nd message wrong\n");
 265
 266     /* check the mailslot info */
 267     dwNext = dwMsgCount = 0;
 268     ok( GetMailslotInfo( hSlot, NULL, &dwNext, &dwMsgCount, NULL ),
 269         "getmailslotinfo failed\n");
 270     ok( dwNext == 0, "dwNext incorrect %u\n", dwNext);
 271     todo_wine {
 272         ok( dwMsgCount == 1, "dwMsgCount incorrect %u\n", dwMsgCount);
 273     }
 274
 275     /* read the 3rd (zero length) message */
 276     todo_wine {
 277     ok( ReadFile( hSlot, buffer, sizeof buffer, &count, NULL),
 278         "3rd slot read failed\n");
 279     }
 280     ok( count == 0, "failed to get 3rd message\n");
 281
 282     /*
 283      * now there should be no more messages
 284      * check the mailslot info
 285      */
 286     dwNext = dwMsgCount = 0;
 287     ok( GetMailslotInfo( hSlot, NULL, &dwNext, &dwMsgCount, NULL ),
 288         "getmailslotinfo failed\n");
 289     ok( dwNext == MAILSLOT_NO_MESSAGE, "dwNext incorrect\n");
 290     ok( dwMsgCount == 0, "dwMsgCount incorrect\n");
 291
 292     /* check that reads fail */
 293     ret = ReadFile( hSlot, buffer, sizeof buffer, &count, NULL);
 294     ok( !ret, "3rd slot read succeeded\n");
 295     if (!ret) ok( GetLastError() == ERROR_SEM_TIMEOUT, "wrong error %u\n", GetLastError() );
 296     else ok( count == 0, "wrong count %u\n", count );
 297
 298     /* finally close the mailslot and its client */
 299     ok( CloseHandle( hWriter2 ), "closing 2nd client\n");
 300     ok( CloseHandle( hWriter ), "closing the client\n");
 301     ok( CloseHandle( hSlot ), "closing the mailslot\n");
 302
 303     /* test timeouts */
 304     hSlot = CreateMailslot( szmspath, 0, 1000, NULL );
 305     ok( hSlot != INVALID_HANDLE_VALUE , "valid mailslot failed\n");
 306     count = 0;
 307     memset(buffer, 0, sizeof buffer);
 308     dwTimeout = GetTickCount();
 309     ok( !ReadFile( hSlot, buffer, sizeof buffer, &count, NULL), "slot read\n");
 310     ok( GetLastError() == ERROR_SEM_TIMEOUT, "wrong error %u\n", GetLastError() );
 311     dwTimeout = GetTickCount() - dwTimeout;
 312     ok( dwTimeout >= 990, "timeout too short %u\n", dwTimeout );
 313     ok( CloseHandle( hSlot ), "closing the mailslot\n");
 314
 315     return 0;
 316 }
 317
 318 START_TEST(mailslot)
 319 {
 320     mailslot_test();
 321 }