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