openvpn/tap-win32/prototypes.h

   1 /*
   2  *  TAP-Win32 -- A kernel driver to provide virtual tap device functionality
   3  *               on Windows.  Originally derived from the CIPE-Win32
   4  *               project by Damion K. Wilson, with extensive modifications by
   5  *               James Yonan.
   6  *
   7  *  All source code which derives from the CIPE-Win32 project is
   8  *  Copyright (C) Damion K. Wilson, 2003, and is released under the
   9  *  GPL version 2 (see below).
  10  *
  11  *  All other source code is Copyright (C) 2002-2005 OpenVPN Solutions LLC,
  12  *  and is released under the GPL version 2 (see below).
  13  *
  14  *  This program is free software; you can redistribute it and/or modify
  15  *  it under the terms of the GNU General Public License version 2
  16  *  as published by the Free Software Foundation.
  17  *
  18  *  This program is distributed in the hope that it will be useful,
  19  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  *  GNU General Public License for more details.
  22  *
  23  *  You should have received a copy of the GNU General Public License
  24  *  along with this program (see the file COPYING included with this
  25  *  distribution); if not, write to the Free Software Foundation, Inc.,
  26  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  27  */
  28
  29 #ifndef TAP_PROTOTYPES_DEFINED
  30 #define TAP_PROTOTYPES_DEFINED
  31
  32 NTSTATUS DriverEntry
  33    (
  34     IN PDRIVER_OBJECT p_DriverObject,
  35     IN PUNICODE_STRING p_RegistryPath
  36    );
  37
  38 VOID TapDriverUnload
  39    (
  40     IN PDRIVER_OBJECT p_DriverObject
  41    );
  42
  43 NDIS_STATUS AdapterCreate
  44    (
  45     OUT PNDIS_STATUS p_ErrorStatus,
  46     OUT PUINT p_MediaIndex,
  47     IN PNDIS_MEDIUM p_Media,
  48     IN UINT p_MediaCount,
  49     IN NDIS_HANDLE p_AdapterHandle,
  50     IN NDIS_HANDLE p_ConfigurationHandle
  51    );
  52
  53 VOID AdapterHalt
  54    (
  55     IN NDIS_HANDLE p_AdapterContext
  56    );
  57
  58 VOID AdapterFreeResources
  59    (
  60     TapAdapterPointer p_Adapter
  61    );
  62
  63 NDIS_STATUS AdapterReset
  64    (
  65     OUT PBOOLEAN p_AddressingReset,
  66     IN NDIS_HANDLE p_AdapterContext
  67    );
  68
  69 NDIS_STATUS AdapterQuery
  70    (
  71     IN NDIS_HANDLE p_AdapterContext,
  72     IN NDIS_OID p_OID,
  73     IN PVOID p_Buffer,
  74     IN ULONG p_BufferLength,
  75     OUT PULONG p_BytesWritten,
  76     OUT PULONG p_BytesNeeded
  77    );
  78
  79 NDIS_STATUS AdapterModify
  80    (
  81     IN NDIS_HANDLE p_AdapterContext,
  82     IN NDIS_OID p_OID,
  83     IN PVOID p_Buffer,
  84     IN ULONG p_BufferLength,
  85     OUT PULONG p_BytesRead,
  86     OUT PULONG p_BytesNeeded
  87    );
  88
  89 NDIS_STATUS AdapterTransmit
  90    (
  91     IN NDIS_HANDLE p_AdapterContext,
  92     IN PNDIS_PACKET p_Packet,
  93     IN UINT p_Flags
  94    );
  95
  96 NDIS_STATUS AdapterReceive
  97    (
  98     OUT PNDIS_PACKET p_Packet,
  99     OUT PUINT p_Transferred,
 100     IN NDIS_HANDLE p_AdapterContext,
 101     IN NDIS_HANDLE p_ReceiveContext,
 102     IN UINT p_Offset,
 103     IN UINT p_ToTransfer
 104    );
 105
 106 NTSTATUS TapDeviceHook
 107    (
 108     IN PDEVICE_OBJECT p_DeviceObject,
 109     IN PIRP p_IRP
 110    );
 111
 112 NDIS_STATUS CreateTapDevice
 113    (
 114     TapExtensionPointer p_Extension,
 115     const char *p_Name
 116    );
 117
 118 VOID DestroyTapDevice
 119    (
 120     TapExtensionPointer p_Extension
 121    );
 122
 123 VOID TapDeviceFreeResources
 124    (
 125     TapExtensionPointer p_Extension
 126     );
 127
 128 NTSTATUS CompleteIRP
 129    (
 130     IN PIRP p_IRP,
 131     IN TapPacketPointer p_PacketBuffer,
 132     IN CCHAR PriorityBoost
 133    );
 134
 135 VOID CancelIRPCallback
 136    (
 137     IN PDEVICE_OBJECT p_DeviceObject,
 138     IN PIRP p_IRP
 139    );
 140
 141 VOID CancelIRP
 142    (
 143     TapExtensionPointer p_Extension,
 144     IN PIRP p_IRP,
 145     BOOLEAN callback
 146    );
 147
 148 VOID FlushQueues
 149    (
 150     TapExtensionPointer p_Extension
 151    );
 152
 153 VOID ResetTapAdapterState
 154    (
 155     TapAdapterPointer p_Adapter
 156    );
 157
 158 BOOLEAN ProcessARP
 159    (
 160     TapAdapterPointer p_Adapter,
 161     const PARP_PACKET src,
 162     const IPADDR adapter_ip,
 163     const IPADDR ip_network,
 164     const IPADDR ip_netmask,
 165     const MACADDR mac
 166    );
 167
 168 VOID SetMediaStatus
 169    (
 170     TapAdapterPointer p_Adapter,
 171     BOOLEAN state
 172    );
 173
 174 VOID InjectPacket
 175    (
 176     TapAdapterPointer p_Adapter,
 177     UCHAR *packet,
 178     const unsigned int len
 179    );
 180
 181 VOID CheckIfDhcpAndTunMode
 182    (
 183     TapAdapterPointer p_Adapter
 184    );
 185
 186 VOID HookDispatchFunctions();
 187
 188 #if ENABLE_NONADMIN
 189
 190 typedef struct _SECURITY_DESCRIPTOR {
 191   unsigned char opaque[20];
 192 } SECURITY_DESCRIPTOR;
 193
 194 NTSYSAPI
 195 NTSTATUS
 196 NTAPI
 197 ZwSetSecurityObject (
 198   IN HANDLE  Handle,
 199   IN SECURITY_INFORMATION  SecurityInformation,
 200   IN PSECURITY_DESCRIPTOR  SecurityDescriptor);
 201
 202 VOID AllowNonAdmin (TapExtensionPointer p_Extension);
 203
 204 #endif
 205
 206 #if PACKET_TRUNCATION_CHECK
 207
 208 VOID IPv4PacketSizeVerify
 209    (
 210     const UCHAR *data,
 211     ULONG length,
 212     BOOLEAN tun,
 213     const char *prefix,
 214     LONG *counter
 215    );
 216
 217 #endif
 218
 219 #endif