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- Keep waiting for a reply if we get one that is not ours or invalid

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- Make sure the packet we got is from our target otherwise discard it

svn path=/trunk/; revision=42356
This commit is contained in:
Cameron Gutman 2009-08-03 02:15:17 +00:00
parent b85fb3bd9f
commit 3ced893fd0
1 changed files with 36 additions and 32 deletions
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68
reactos/base/applications/network/ping/ping.c
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@ -437,6 +437,14 @@ static BOOL DecodeResponse(PCHAR buffer, UINT size, PSOCKADDR_IN from)
return FALSE;
}
if (from->sin_addr.s_addr != Target.sin_addr.s_addr)
{
#ifndef NDEBUG
printf("Bad source address (%s should be %s)\n", inet_ntoa(from->sin_addr), inet_ntoa(Target.sin_addr));
#endif /* !NDEBUG */
return FALSE;
}
QueryTime(&LargeTime);
RelativeTime.QuadPart = (LargeTime.QuadPart - Icmp->Timestamp.QuadPart);
@ -543,44 +551,40 @@ static BOOL Ping(VOID)
Timeval.tv_sec = Timeout / 1000;
Timeval.tv_usec = Timeout % 1000;
Status = select(0, &Fds, NULL, NULL, &Timeval);
if ((Status != SOCKET_ERROR) && (Status != 0))
{
Length = sizeof(From);
Status = recvfrom(IcmpSock, Buffer, Size, 0, &From, &Length);
do {
Status = select(0, &Fds, NULL, NULL, &Timeval);
if ((Status != SOCKET_ERROR) && (Status != 0))
{
Length = sizeof(From);
Status = recvfrom(IcmpSock, Buffer, Size, 0, &From, &Length);
#ifndef NDEBUG
printf("Received packet\n");
DisplayBuffer(Buffer, Status);
printf("\n");
printf("Received packet\n");
DisplayBuffer(Buffer, Status);
printf("\n");
#endif /* !NDEBUG */
}
else
LostCount++;
if (Status == SOCKET_ERROR)
{
if (WSAGetLastError() != WSAETIMEDOUT)
{
printf("Could not receive data (%d).\n", WSAGetLastError());
GlobalFree(Buffer);
return FALSE;
}
Status = 0;
}
else
LostCount++;
if (Status == SOCKET_ERROR)
{
if (WSAGetLastError() != WSAETIMEDOUT)
{
printf("Could not receive data (%d).\n", WSAGetLastError());
GlobalFree(Buffer);
return FALSE;
}
Status = 0;
}
if (Status == 0)
{
printf("Request timed out.\n");
GlobalFree(Buffer);
return TRUE;
}
if (Status == 0)
{
printf("Request timed out.\n");
GlobalFree(Buffer);
return TRUE;
}
if (!DecodeResponse(Buffer, Status, (PSOCKADDR_IN)&From))
{
/* FIXME: Wait again as it could be another ICMP message type */
printf("Request timed out (incomplete datagram received).\n");
LostCount++;
}
} while (!DecodeResponse(Buffer, Status, (PSOCKADDR_IN)&From));
GlobalFree(Buffer);
return TRUE;