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[IP] Allow 0xFFFF as Valid Network Port Number (#5074)

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* Allow 0xFFFF as valid port number

* Note possible reason for failure in TCPAllocatePort

* Return NtStatus error on TCP/IP out-of-ports failure

* Replace unavailable "ERR" with "DbgPrint"
This commit is contained in:
Doug Lyons 2023-02-17 16:11:00 -06:00 committed by GitHub
parent 1fdbc80e58
commit 874d317a71
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 30 additions and 17 deletions
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12
drivers/network/tcpip/ip/transport/tcp/accept.c
View file

@ -77,10 +77,14 @@ NTSTATUS TCPListen(PCONNECTION_ENDPOINT Connection, UINT Backlog)
if (NT_SUCCESS(Status))
{
/* Allocate the port in the port bitmap */
Connection->AddressFile->Port = TCPAllocatePort(LocalAddress.Address[0].Address[0].sin_port);
/* This should never fail */
ASSERT(Connection->AddressFile->Port != 0xFFFF);
UINT AllocatedPort = TCPAllocatePort(LocalAddress.Address[0].Address[0].sin_port);
/* This should never fail unless all ports are in use */
if (AllocatedPort == (UINT) -1)
{
DbgPrint("ERR: No more ports available.\n");
return STATUS_TOO_MANY_ADDRESSES;
}
Connection->AddressFile->Port = AllocatedPort;
}
}
}

16
drivers/network/tcpip/ip/transport/tcp/tcp.c
View file

@ -214,7 +214,7 @@ NTSTATUS TCPStartup(VOID)
{
NTSTATUS Status;
Status = PortsStartup( &TCPPorts, 1, 0xfffe );
Status = PortsStartup(&TCPPorts, 1, 0xffff);
if (!NT_SUCCESS(Status))
{
return Status;
@ -370,6 +370,8 @@ NTSTATUS TCPConnect
/* Check if we had an unspecified port */
if (!Connection->AddressFile->Port)
{
UINT AllocatedPort;
/* We did, so we need to copy back the port */
Status = TCPGetSockAddress(Connection, (PTRANSPORT_ADDRESS)&LocalAddress, FALSE);
if (!NT_SUCCESS(Status))
@ -379,10 +381,14 @@ NTSTATUS TCPConnect
}
/* Allocate the port in the port bitmap */
Connection->AddressFile->Port = TCPAllocatePort(LocalAddress.Address[0].Address[0].sin_port);
/* This should never fail */
ASSERT(Connection->AddressFile->Port != 0xFFFF);
AllocatedPort = TCPAllocatePort(LocalAddress.Address[0].Address[0].sin_port);
/* This should never fail unless all ports are in use */
if (AllocatedPort == (UINT) -1)
{
DbgPrint("ERR: No more ports available.\n");
return STATUS_TOO_MANY_ADDRESSES;
}
Connection->AddressFile->Port = AllocatedPort;
}
connaddr.addr = RemoteAddress.Address.IPv4Address;

19
drivers/network/tcpip/tcpip/fileobjs.c
View file

@ -404,6 +404,7 @@ NTSTATUS FileOpenAddress(
PVOID Options)
{
PADDRESS_FILE AddrFile;
UINT AllocatedPort;
TI_DbgPrint(MID_TRACE, ("Called (Proto %d).\n", Protocol));
@ -472,14 +473,15 @@ NTSTATUS FileOpenAddress(
if (Address->Address[0].Address[0].sin_port)
{
/* The client specified an explicit port so we force a bind to this */
AddrFile->Port = TCPAllocatePort(Address->Address[0].Address[0].sin_port);
AllocatedPort = TCPAllocatePort(Address->Address[0].Address[0].sin_port);
/* Check for bind success */
if (AddrFile->Port == 0xffff)
if (AllocatedPort == (UINT)-1)
{
ExFreePoolWithTag(AddrFile, ADDR_FILE_TAG);
return STATUS_ADDRESS_ALREADY_EXISTS;
}
AddrFile->Port = AllocatedPort;
/* Sanity check */
ASSERT(Address->Address[0].Address[0].sin_port == AddrFile->Port);
@ -487,14 +489,15 @@ NTSTATUS FileOpenAddress(
else if (!AddrIsUnspecified(&AddrFile->Address))
{
/* The client is trying to bind to a local address so allocate a port now too */
AddrFile->Port = TCPAllocatePort(0);
AllocatedPort = TCPAllocatePort(0);
/* Check for bind success */
if (AddrFile->Port == 0xffff)
if (AllocatedPort == (UINT)-1)
{
ExFreePoolWithTag(AddrFile, ADDR_FILE_TAG);
return STATUS_ADDRESS_ALREADY_EXISTS;
}
AddrFile->Port = AllocatedPort;
}
else
{
@ -509,16 +512,16 @@ NTSTATUS FileOpenAddress(
case IPPROTO_UDP:
TI_DbgPrint(MID_TRACE,("Allocating udp port\n"));
AddrFile->Port =
UDPAllocatePort(Address->Address[0].Address[0].sin_port);
AllocatedPort = UDPAllocatePort(Address->Address[0].Address[0].sin_port);
if ((Address->Address[0].Address[0].sin_port &&
AddrFile->Port != Address->Address[0].Address[0].sin_port) ||
AddrFile->Port == 0xffff)
AllocatedPort != Address->Address[0].Address[0].sin_port) ||
AllocatedPort == (UINT)-1)
{
ExFreePoolWithTag(AddrFile, ADDR_FILE_TAG);
return STATUS_ADDRESS_ALREADY_EXISTS;
}
AddrFile->Port = AllocatedPort;
TI_DbgPrint(MID_TRACE,("Setting port %d (wanted %d)\n",
AddrFile->Port,