moztest.c File Reference

#include <winsock.h>
#include <stdio.h>

Include dependency graph for moztest.c:

Go to the source code of this file.

Macros
#define	DBG(x)

Functions
ULONG	DbgPrint (PCH Format,...)
int	SocketTest ()
int	VirtualTest ()
int	main (int argc, char **argv)

Macro Definition Documentation

DBG

#define DBG

(

x

)

Value:

printf("%s:%i - %s", __FILE__, __LINE__, x); \
  DbgPrint("%s:%i - %s", __FILE__, __LINE__, x);

Definition at line 12 of file moztest.c.

Function Documentation

DbgPrint()

ULONG DbgPrint	(	PCH	Format,
			...
	)

main()

int main	(	int argc	,
		char **	argv
	)

Definition at line 232 of file moztest.c.

{
   if (argc != 2)
   {
      printf("Usage: %s test_name\n\n", argv[0]);
      printf("Valid test names:\n");
      printf("\tsocket\n");
      printf("\tvirtual\n");
      return 0;
   }

   if (!_stricmp(argv[1], "socket"))
      return SocketTest();
   if (!_stricmp(argv[1], "virtual"))
      return VirtualTest();

   printf("Test '%s' doesn't exist\n", argv[1]);

   return 0;
}

SocketTest()

int SocketTest

(

)

Definition at line 16 of file moztest.c.

{
   /*
    * A socket pair is often used for interprocess communication,
    * so we need to make sure neither socket is associated with
    * the I/O completion port; otherwise it can't be used by a
    * child process.
    *
    * The default implementation below cannot be used for NT
    * because PR_Accept would have associated the I/O completion
    * port with the listening and accepted sockets.
    */
   SOCKET listenSock;
   SOCKET osfd[2];
   struct sockaddr_in selfAddr, peerAddr;
   int addrLen;
   WORD wVersionRequested;
   WSADATA wsaData;
   int err;

   /*
    * Initialization.
    */

   wVersionRequested = MAKEWORD( 2, 2 );

   DBG("Calling WSAStartup\n");
   err = WSAStartup( wVersionRequested, &wsaData );
   if ( err != 0 ) {
       /* Tell the user that we could not find a usable */
       /* WinSock DLL.                                  */
       DBG("WSAStartup failed\n");
       return 1;
   }

   /* Confirm that the WinSock DLL supports 2.2.*/
   /* Note that if the DLL supports versions greater    */
   /* than 2.2 in addition to 2.2, it will still return */
   /* 2.2 in wVersion since that is the version we      */
   /* requested.                                        */

   if ( LOBYTE( wsaData.wVersion ) != 2 ||
           HIBYTE( wsaData.wVersion ) != 2 ) {
       /* Tell the user that we could not find a usable */
       /* WinSock DLL.                                  */
       DBG("WSAStartup version unacceptable\n");
       WSACleanup( );
       return 1;
   }

   /* The WinSock DLL is acceptable. Proceed. */

   DBG("Calling socket\n");
   osfd[0] = osfd[1] = INVALID_SOCKET;
   listenSock = socket(AF_INET, SOCK_STREAM, 0);
   if (listenSock == INVALID_SOCKET) {
       DBG("socket failed\n");
       goto failed;
   }

   selfAddr.sin_family = AF_INET;
   selfAddr.sin_port = 0;
   selfAddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); /* BugZilla: 35408 */
   addrLen = sizeof(selfAddr);
   DBG("Calling bind\n");
   if (bind(listenSock, (struct sockaddr *) &selfAddr,
           addrLen) == SOCKET_ERROR) {
       DBG("bind failed\n");
       goto failed;
   }

   DBG("Calling getsockname\n");
   if (getsockname(listenSock, (struct sockaddr *) &selfAddr,
           &addrLen) == SOCKET_ERROR) {
       DBG("getsockname failed\n");
       goto failed;
   }

   DBG("Calling listen\n");
   if (listen(listenSock, 5) == SOCKET_ERROR) {
       DBG("listen failed\n");
       goto failed;
   }

   DBG("Calling socket\n");
   osfd[0] = socket(AF_INET, SOCK_STREAM, 0);
   if (osfd[0] == INVALID_SOCKET) {
       DBG("socket failed\n");
       goto failed;
   }
   selfAddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);

   /*
    * Only a thread is used to do the connect and accept.
    * I am relying on the fact that connect returns
    * successfully as soon as the connect request is put
    * into the listen queue (but before accept is called).
    * This is the behavior of the BSD socket code.  If
    * connect does not return until accept is called, we
    * will need to create another thread to call connect.
    */
   DBG("Calling connect\n");
   if (connect(osfd[0], (struct sockaddr *) &selfAddr,
           addrLen) == SOCKET_ERROR) {
       DBG("connect failed\n");
       goto failed;
   }

   /*
    * A malicious local process may connect to the listening
    * socket, so we need to verify that the accepted connection
    * is made from our own socket osfd[0].
    */
   DBG("Calling getsockname\n");
   if (getsockname(osfd[0], (struct sockaddr *) &selfAddr,
           &addrLen) == SOCKET_ERROR) {
       DBG("getsockname failed\n");
       goto failed;
   }

   DBG("Calling accept\n");
   osfd[1] = accept(listenSock, (struct sockaddr *) &peerAddr, &addrLen);
   if (osfd[1] == INVALID_SOCKET) {
       DBG("accept failed\n");
       goto failed;
   }
   if (peerAddr.sin_port != selfAddr.sin_port) {
       /* the connection we accepted is not from osfd[0] */
       DBG("peerAddr.sin_port != selfAddr.sin_port\n");
       goto failed;
   }

   DBG("Hurray!\n");

   closesocket(listenSock);

   closesocket(osfd[0]);
   closesocket(osfd[1]);

   WSACleanup();

   return 0;

failed:
   if (listenSock != INVALID_SOCKET) {
       closesocket(listenSock);
   }
   if (osfd[0] != INVALID_SOCKET) {
       closesocket(osfd[0]);
   }
   if (osfd[1] != INVALID_SOCKET) {
       closesocket(osfd[1]);
   }

   WSACleanup();

   return 1;
}

Referenced by main().

VirtualTest()

int VirtualTest

(

)

Definition at line 175 of file moztest.c.

{
   DWORD dwErr;
   SYSTEM_INFO si;
   HANDLE hMap;
   PBYTE pBufferStart;
   PCHAR pszFileName = "test.txt";
   ULONG dwMaxSize = strlen(pszFileName);

   DBG("Calling CreateFileMappingA\n");
   hMap = CreateFileMappingA(INVALID_HANDLE_VALUE, NULL,
      PAGE_READWRITE | SEC_RESERVE, 0, dwMaxSize, pszFileName);
   if (!hMap)
   {
      DBG("CreateFileMappingA failed\n");
      return 1;
   }

   dwErr = GetLastError();
   DBG("Calling MapViewOfFile\n");
   pBufferStart = (BYTE *)MapViewOfFile(hMap, FILE_MAP_ALL_ACCESS, 0, 0, 0);
   if (!pBufferStart)
   {
      DBG("MapViewOfFile failed\n");
      return 1;
   }

   GetSystemInfo(&si);

   if (dwErr == ERROR_ALREADY_EXISTS)
   {
      DBG("MapViewOfFile returned ERROR_ALREADY_EXISTS\n");
      DBG("This really shouldn't happen, but it's not fatal.\n");
      UnmapViewOfFile(pBufferStart);
      CloseHandle(hMap);
      return 1;
   }
   else
   {
      DBG("Calling VirtualAlloc\n");
      if (!VirtualAlloc(pBufferStart, si.dwPageSize, MEM_COMMIT, PAGE_READWRITE))
      {
         DBG("VirtualAlloc failed\n");
         UnmapViewOfFile(pBufferStart);
         CloseHandle(hMap);
         return 1;
      }
   }

   DBG("Hurray!\n");

   UnmapViewOfFile(pBufferStart);
   CloseHandle(hMap);

   return 0;
}

Referenced by main().