ReactOS 0.4.15-dev-7924-g5949c20
icmp.c
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1/*
2 * COPYRIGHT: See COPYING in the top level directory
3 * PROJECT: ReactOS TCP/IP protocol driver
4 * FILE: network/icmp.c
5 * PURPOSE: Internet Control Message Protocol routines
6 * PROGRAMMERS: Casper S. Hornstrup (chorns@users.sourceforge.net)
7 * REVISIONS:
8 * CSH 01/08-2000 Created
9 */
10
11#include "precomp.h"
12
13#include <icmp.h>
14
16{
18
19 return STATUS_SUCCESS;
20}
21
23{
25
26 return STATUS_SUCCESS;
27}
28
30 PADDRESS_FILE AddrFile,
32 PCHAR BufferData,
34 PULONG DataUsed )
35/*
36 * FUNCTION: Sends an ICMP datagram to a remote address
37 * ARGUMENTS:
38 * Request = Pointer to TDI request
39 * ConnInfo = Pointer to connection information
40 * Buffer = Pointer to NDIS buffer with data
41 * DataSize = Size in bytes of data to be sent
42 * RETURNS:
43 * Status of operation
44 */
45{
46 TI_DbgPrint(DEBUG_ICMP, ("Sending ICMP datagram (0x%x)\n", AddrFile));
47
48 /* just forward the call to RawIP handler */
49 return RawIPSendDatagram(AddrFile, ConnInfo, BufferData, DataSize, DataUsed);
50}
51
52
55 PIP_PACKET IPPacket)
56/*
57 * FUNCTION: Receives an ICMP packet
58 * ARGUMENTS:
59 * NTE = Pointer to net table entry which the packet was received on
60 * IPPacket = Pointer to an IP packet that was received
61 */
62{
63 PICMP_HEADER ICMPHeader = (PICMP_HEADER)IPPacket->Data;
64 UINT32 DataSize = IPPacket->TotalSize - IPPacket->HeaderSize;
65
66 TI_DbgPrint(DEBUG_ICMP, ("ICMPReceive: Size (%d) HeaderSize (%d) Type (%d) Code (%d) Checksum (0x%x)\n",
67 IPPacket->TotalSize, IPPacket->HeaderSize, ICMPHeader->Type, ICMPHeader->Code, ICMPHeader->Checksum));
68
69 /* Discard too short packets */
70 if (DataSize < sizeof(ICMP_HEADER))
71 {
72 TI_DbgPrint(DEBUG_ICMP, ("Packet doesn't fit ICMP header. Discarded\n"));
73 return;
74 }
75
76 /* Discard packets with bad checksum */
77 if (!IPv4CorrectChecksum(IPPacket->Data, DataSize))
78 {
79 TI_DbgPrint(DEBUG_ICMP, ("Bad ICMP checksum. Packet discarded\n"));
80 return;
81 }
82
83 RawIpReceive(Interface, IPPacket);
84
85 if (ICMPHeader->Type == ICMP_TYPE_ECHO_REQUEST)
86 {
88 }
89}
90
93 PIP_PACKET IPPacket,
94 UCHAR Type,
95 UCHAR Code)
96/*
97 * FUNCTION: Transmits an ICMP packet in response to an incoming packet
98 * ARGUMENTS:
99 * NTE = Pointer to net table entry to use
100 * IPPacket = Pointer to IP packet that was received
101 * Type = ICMP message type
102 * Code = ICMP message code
103 * NOTES:
104 * We have received a packet from someone and is unable to
105 * process it due to error(s) in the packet or we have run out
106 * of resources. We transmit an ICMP message to the host to
107 * notify him of the problem
108 */
109{
111 IP_PACKET NewPacket;
112 ADDRESS_FILE FakeAddrFile;
114
115 TI_DbgPrint(DEBUG_ICMP, ("Called. Type (%d) Code (%d).\n", Type, Code));
116
117 DataSize = IPPacket->TotalSize - IPPacket->HeaderSize;
118
119 /* First check if we have a route to sender */
120 NCE = RouteGetRouteToDestination(&IPPacket->SrcAddr);
121 if (!NCE)
122 {
123 return;
124 }
125
126 /* This is the only data needed to generate a packet */
127 FakeAddrFile.Protocol = IPPROTO_ICMP;
128 FakeAddrFile.TTL = 128;
129
131 &FakeAddrFile, &NewPacket, &IPPacket->SrcAddr, 0, &Interface->Unicast, 0, IPPacket->Data, DataSize)))
132 {
133 return;
134 }
135
136 ((PICMP_HEADER)NewPacket.Data)->Type = Type;
137 ((PICMP_HEADER)NewPacket.Data)->Code = Code;
138 ((PICMP_HEADER)NewPacket.Data)->Checksum = 0;
139 ((PICMP_HEADER)NewPacket.Data)->Checksum = (USHORT)IPv4Checksum(NewPacket.Data, DataSize, 0);
140
141 IPSendDatagram(&NewPacket, NCE);
142}
143
144/* EOF */
unsigned int UINT32
Type
Definition: Type.h:7
LONG NTSTATUS
Definition: precomp.h:26
#define IPv4Checksum(Data, Count, Seed)
Definition: checksum.h:30
#define IPv4CorrectChecksum(Data, Count)
Definition: checksum.h:38
#define Code
Definition: deflate.h:80
#define NULL
Definition: types.h:112
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
#define DEBUG_ICMP
Definition: debug.h:29
#define TI_DbgPrint(_t_, _x_)
Definition: debug.h:45
#define IPPROTO_ICMP
Definition: ip.h:194
VOID IPRegisterProtocol(UINT ProtocolNumber, IP_PROTOCOL_HANDLER Handler)
Definition: ip.c:386
PNEIGHBOR_CACHE_ENTRY RouteGetRouteToDestination(PIP_ADDRESS Destination)
Definition: router.c:300
NTSTATUS ICMPStartup()
Definition: icmp.c:15
NTSTATUS ICMPShutdown()
Definition: icmp.c:22
NTSTATUS ICMPSendDatagram(PADDRESS_FILE AddrFile, PTDI_CONNECTION_INFORMATION ConnInfo, PCHAR BufferData, ULONG DataSize, PULONG DataUsed)
Definition: icmp.c:29
VOID ICMPReceive(PIP_INTERFACE Interface, PIP_PACKET IPPacket)
Definition: icmp.c:53
VOID ICMPReply(PIP_INTERFACE Interface, PIP_PACKET IPPacket, UCHAR Type, UCHAR Code)
Definition: icmp.c:91
#define ICMP_TYPE_ECHO_REPLY
Definition: icmp.h:21
#define ICMP_TYPE_ECHO_REQUEST
Definition: icmp.h:25
struct ICMP_HEADER * PICMP_HEADER
_In_ NDIS_STATUS _In_ ULONG _In_ USHORT _In_opt_ PVOID _In_ ULONG DataSize
Definition: ndis.h:4755
unsigned int UINT
Definition: ndis.h:50
unsigned short USHORT
Definition: pedump.c:61
VOID RawIpReceive(PIP_INTERFACE Interface, PIP_PACKET IPPacket)
Definition: rawip.c:266
NTSTATUS RawIPSendDatagram(PADDRESS_FILE AddrFile, PTDI_CONNECTION_INFORMATION ConnInfo, PCHAR Buffer, ULONG DataSize, PULONG DataUsed)
Definition: rawip.c:171
NTSTATUS BuildRawIpPacket(PADDRESS_FILE AddrFile, PIP_PACKET Packet, PIP_ADDRESS RemoteAddress, USHORT RemotePort, PIP_ADDRESS LocalAddress, USHORT LocalPort, PCHAR DataBuffer, UINT DataLen)
Definition: rawip.c:86
#define STATUS_SUCCESS
Definition: shellext.h:65
UINT8 Type
Definition: icmp.h:12
UINT16 Checksum
Definition: icmp.h:14
UINT8 Code
Definition: icmp.h:13
Definition: neighbor.h:28
UCHAR TTL
Definition: titypes.h:122
USHORT Protocol
Definition: titypes.h:119
Definition: ip.h:77
PVOID Data
Definition: ip.h:85
IP_ADDRESS SrcAddr
Definition: ip.h:89
UINT HeaderSize
Definition: ip.h:84
UINT TotalSize
Definition: ip.h:86
NTSTATUS IPSendDatagram(PIP_PACKET IPPacket, PNEIGHBOR_CACHE_ENTRY NCE)
Definition: transmit.c:223
uint32_t * PULONG
Definition: typedefs.h:59
uint32_t ULONG
Definition: typedefs.h:59
char * PCHAR
Definition: typedefs.h:51
_In_ UCHAR _In_ UCHAR _In_ ULONG Code
Definition: wdfdevice.h:1701
_Must_inspect_result_ _In_ WDFDEVICE _In_ LPCGUID _Out_ PINTERFACE Interface
Definition: wdffdo.h:465
unsigned char UCHAR
Definition: xmlstorage.h:181