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Ethernet.c
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Ethernet.c
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////////////////////////////////////////////////////////////////////////////////
//
// Global including files.
//
// Including the files for the system.
//
// These including files are generally used in different operation system.
//
////////////////////////////////////////////////////////////////////////////////
#include "Global.h"
////////////////////////////////////////////////////////////////////////////////
//
// Get protocol type comment.
//
////////////////////////////////////////////////////////////////////////////////
_STRING GetProtocolTypeComment(_UINT16 nProtocolType)
{
//Check protocol type.
switch(nProtocolType)
{
case 0x0600:
return "XEROX NS IDP";
case 0x0800:
return "DOD Internet协议/IP";
case 0x0801:
return "X.75 Internet";
case 0x0802:
return "NBS Internet";
case 0x0803:
return "ECMA Internet";
case 0x0804:
return "Chaosnet";
case 0x0805:
return "X.25 第三层";
case 0x0806:
return "地址解析协议/ARP";
case 0x0807:
return "XNS兼容性";
case 0x1000:
return "Berkeley报尾";
case 0x5208:
return "BBN Simnet";
case 0x6001:
return "DEC MOP 转储/装入";
case 0x6002:
return "DEC MOP 远程控制台";
case 0x6003:
return "DEC DECnet Phase IV";
case 0x6004:
return "DEC LAT";
case 0x6005:
case 0x6006:
return "DEC";
case 0x8005:
return "HP probe";
case 0x8010:
return "Excelan";
case 0x8035:
return "反向ARP";
case 0x8038:
return "DEC LANBridge";
case 0x8098:
return "Appletalk";
default:
return "Unknown";
}
}
////////////////////////////////////////////////////////////////////////////////
//
// Get mac address type comment.
//
////////////////////////////////////////////////////////////////////////////////
_STRING GetMACAddressTypeComment(_UINT16 nMACAddressType)
{
//Check MAC address type.
switch(nMACAddressType)
{
case 1:
return "以太网(10MB)";
case 2:
return "试验性以太网(3MB)";
case 3:
return "业余无线X.25网";
case 4:
return "Proteon ProNet 令牌环网";
case 5:
return "Chaos网";
case 6:
return "IEEE.802网络";
case 7:
return "ARCNET";
default:
return "Unknow";
}
}
////////////////////////////////////////////////////////////////////////////////
//
// Get ARP operation comment.
//
////////////////////////////////////////////////////////////////////////////////
_STRING GetARPOperationComment(_UINT16 nOperation)
{
//Check operation.
switch(nOperation)
{
case 1:
return "ARP请求";
case 2:
return "ARP应答";
default:
return "Unknow";
}
}
////////////////////////////////////////////////////////////////////////////////
//
// Get ICMP type comment.
//
////////////////////////////////////////////////////////////////////////////////
_STRING GetICMPTypeComment(_UINT8 nType)
{
//Check type.
switch(nType)
{
case 0:
return "回声(echo)回答";
case 3:
return "报宿不可到达";
case 4:
return "报源抑制";
case 5:
return "重定向";
case 8:
return "回声(echo)请求";
case 9:
return "路由器调整";
case 10:
return "路由器请求";
case 11:
return "超时";
case 12:
return "参数不可理解";
case 13:
return "时间戳请求";
case 14:
return "时间戳应答";
case 15:
return "信息请求";
case 16:
return "信息应答";
case 17:
return "地址掩码请求";
case 18:
return "地址掩码应答";
default:
return "Unknow";
}
}
////////////////////////////////////////////////////////////////////////////////
//
// Get ICMP code comment.
//
////////////////////////////////////////////////////////////////////////////////
_STRING GetICMPCodeComment(_UINT8 nCode)
{
//Check code.
switch(nCode)
{
case 0:
return "正常";
case 1:
return "主机不可到达";
case 2:
return "协议不可到达";
case 3:
return "端口不可到达";
case 4:
return "需要进行分段，但却设置了禁止分段标志";
case 5:
return "源路径失败";
case 6:
return "目的网络未知";
case 7:
return "目的主机未知";
case 8:
return "源主机隔离(不再使用或过时)";
case 9:
return "管理性禁止目的网络";
case 10:
return "管理性禁止目的主机";
case 11:
return "网络无法提供指定的TOS";
case 12:
return "主机无法提供指定的TOS";
case 13:
return "管理性禁止通讯";
case 14:
return "违反主机优先级";
case 15:
return "优先级停止使用";
default:
return "Unknow";
}
}
////////////////////////////////////////////////////////////////////////////////
//
// Get IP protocol comment.
//
////////////////////////////////////////////////////////////////////////////////
_STRING GetIPProtocolComment(_UINT8 nProtocol)
{
//Check protocol.
switch(nProtocol)
{
case 1:
return "ICMP/网际控制报文协议";
case 2:
return "IGMP/网际组管理协议";
case 3:
return "GGP/网关到网关协议";
case 5:
return "ST/流";
case 6:
return "TCP/传输控制协议";
case 7:
return "UCL";
case 8:
return "EGP/外部网关协议";
case 9:
return "IGP/内部网关协议";
case 10:
return "BBN-MON/BBN-RCC监控";
case 11:
return "NVP-II/网络语音协议";
case 12:
return "PUP";
case 13:
return "ARGUS";
case 14:
return "EMCON";
case 15:
return "XNET/越网跟踪器";
case 16:
return "CHAOS";
case 17:
return "UDP/用户数据报协议";
case 18:
return "MUX/多路复用";
case 19:
return "DCN-MEAS/DCN测量子系统";
case 20:
return "HMP/主机监控协议";
case 21:
return "PRM/分组无线监控";
case 22:
return "XNS-IDP/Xerox NS IDP";
case 23:
return "TRUNK-1";
case 24:
return "TRUNK-2";
case 25:
return "LEAF-1";
case 26:
return "LEAF-2";
case 27:
return "RDP/可靠的数据协议";
case 28:
return "IPTP/Internet可靠的TP";
case 29:
return "ISO-TP4";
case 30:
return "NETBLT/大块数据传输";
case 31:
return "MEF-NSP/MFE网络服务";
case 32:
return "MERIT-INP/MERIT节点间协议";
case 33:
return "SEP/顺序交换";
case 61:
return "任何主机内部协议";
case 62:
return "CFTP";
case 63:
return "任何局域网协议";
case 64:
return "SAT-EXPAK/SATNET和Backroom EXPAK";
case 65:
return "MIT-SUBN/MIT子网支持";
case 66:
return "RVD/MIT远程虚拟磁盘";
case 67:
return "IPPC/Internet Plur.分组核心";
case 68:
return "任何分布式文件系统";
case 69:
return "SAT-MON/SATNET监控";
case 71:
return "IPCV/分组核心应用";
case 76:
return "BRSAT-MON/Backroom SATNET监控";
case 78:
return "WB-MON/宽带监控";
case 79:
return "WB-EXPAK/宽带EXPAK";
case 0:
case 255:
return "保留";
default:
return "未分配";
}
}
////////////////////////////////////////////////////////////////////////////////
//
// Dump mac address.
//
////////////////////////////////////////////////////////////////////////////////
void DumpMACAddress(_STRING lpstrName,_MAC6 macAddress)
{
#ifdef _DEBUG
assert(lpstrName != NULL);
#endif
//Print MAC address.
LogRequestedFormat(LOG_PACKET | LOG_INFORMATION,
"\t%s = %02x-%02x-%02x-%02x-%02x-%02x",
lpstrName,
macAddress[0],macAddress[1],macAddress[2],
macAddress[3],macAddress[4],macAddress[5]);
}
////////////////////////////////////////////////////////////////////////////////
//
// Dump IP address.
//
////////////////////////////////////////////////////////////////////////////////
void DumpIPAddress(_STRING lpstrName,_IPV4 ipAddress)
{
#ifdef _DEBUG
assert(lpstrName != NULL);
#endif
//Print MAC address.
LogRequestedFormat(LOG_PACKET | LOG_INFORMATION,
"\t%s = %d.%d.%d.%d",
lpstrName,
ipAddress[0],ipAddress[1],ipAddress[2],ipAddress[3]);
}
////////////////////////////////////////////////////////////////////////////////
//
// Initialize UDP packet.
//
////////////////////////////////////////////////////////////////////////////////
void InitializeUDPPacket(UDPPacket* lpPacket)
{
#ifdef _DEBUG
assert(lpPacket != NULL);
#endif
//Clear.
memset(lpPacket,0,sizeof(UDPPacket));
}
////////////////////////////////////////////////////////////////////////////////
//
// Wrap UDP packet.
//
////////////////////////////////////////////////////////////////////////////////
_BOOL WrapUDPPacket(SimpleBuffer* lpBuffer,UDPPacket* lpPacket)
{
#ifdef _DEBUG
assert(lpBuffer != NULL && lpPacket != NULL);
#endif
//Set source port.
if(!SetShort(lpBuffer,lpPacket->nSourcePort))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::WrapUDPPacket : fail to set short !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Set destination port.
if(!SetShort(lpBuffer,lpPacket->nDestinationPort))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::WrapUDPPacket : fail to set short !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Calculate length.
lpPacket->nLength = lpPacket->buffer.nCount + 4 * sizeof(_UINT16);
//Set length.
if(!SetShort(lpBuffer,lpPacket->nLength))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::WrapUDPPacket : fail to set short !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Set checksum.
if(!SetShort(lpBuffer,lpPacket->nChecksum))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::WrapUDPPacket : fail to set short !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Check count.
if(lpPacket->buffer.nCount > 0)
{
//Set bytes.
if(!SetBytes(lpBuffer,(_BYTE *)lpPacket->buffer.block,lpPacket->buffer.nCount))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::WrapUDPPacket : fail to set bytes !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
}
//Return true.
return _TRUE;
}
////////////////////////////////////////////////////////////////////////////////
//
// Unwrap UDP packet.
//
////////////////////////////////////////////////////////////////////////////////
_BOOL UnwrapUDPPacket(SimpleBuffer* lpBuffer,UDPPacket* lpPacket)
{
#ifdef _DEBUG
assert(lpBuffer != NULL && lpPacket != NULL);
#endif
//Get source port.
if(!GetShort(lpBuffer,(_SHORT *)&lpPacket->nSourcePort))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::UnwrapUDPPacket : fail to get short !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Get destination port.
if(!GetShort(lpBuffer,(_SHORT *)&lpPacket->nDestinationPort))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::UnwrapUDPPacket : fail to get short !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Get length.
if(!GetShort(lpBuffer,(_SHORT *)&lpPacket->nLength))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::UnwrapUDPPacket : fail to get short !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Get checksum.
if(!GetShort(lpBuffer,(_SHORT *)&lpPacket->nChecksum))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::UnwrapUDPPacket : fail to get short !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Initialize buffer.
InitializeBuffer(&lpPacket->buffer);
//Get bytes.
if(!GetBytes(lpBuffer,(_BYTE *)lpPacket->buffer.block,lpPacket->nLength - 4 * sizeof(_UINT16)))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::UnwrapUDPPacket : fail to get bytes !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Set count.
lpPacket->buffer.nCount = lpPacket->nLength - 4 * sizeof(_UINT16);
//Return true.
return _TRUE;
}
////////////////////////////////////////////////////////////////////////////////
//
// Dump UDP packet.
//
////////////////////////////////////////////////////////////////////////////////
void DumpUDPPacket(UDPPacket* lpPacket)
{
//Format pointer.
_STRING lpstrFormated;
//Formated block.
_BLOCK blockFormated;
#ifdef _DEBUG
assert(lpPacket != NULL);
#endif
//Clear block.
memset(blockFormated,0,BLOCK_SIZE);
//Set formated.
lpstrFormated = (_STRING)blockFormated;
//Print.
lpstrFormated = FormatLine(lpstrFormated,
"Ethernet::DumpUDPPacket : dump packet !");
//Print source port.
lpstrFormated = FormatLine(lpstrFormated,
"\tSource Port = %d",lpPacket->nSourcePort);
//Print destination port.
lpstrFormated = FormatLine(lpstrFormated,
"\tDestination Port = %d",lpPacket->nDestinationPort);
//Print length.
lpstrFormated = FormatLine(lpstrFormated,
"\tLength = %d",lpPacket->nLength);
//Print checksum.
lpstrFormated = FormatLine(lpstrFormated,
"\tChecksum = 0x%04x",lpPacket->nChecksum);
//Dump buffer.
lpstrFormated = DumpBuffer(lpstrFormated,&lpPacket->buffer);
//Log event.
LogRequestedEvent((_STRING)blockFormated,
LOG_PACKET | LOG_INFORMATION);
}
////////////////////////////////////////////////////////////////////////////////
//
// Get UDP packet checksum.
//
////////////////////////////////////////////////////////////////////////////////
_BOOL GetUDPPacketChecksum(_IPV4 ipSource,_IPV4 ipDestination,UDPPacket* lpPacket)
{
//Buffer
SimpleBuffer buffer;
#ifdef _DEBUG
assert(lpPacket != NULL);
#endif
//Initialize buffer.
InitializeBuffer(&buffer);
//Set bytes.
if(!SetBytes(&buffer,(_BYTE *)ipSource,sizeof(_IPV4)))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::GetUDPPacketChecksum : fail to set bytes !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Set bytes.
if(!SetBytes(&buffer,(_BYTE *)ipDestination,sizeof(_IPV4)))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::GetUDPPacketChecksum : fail to set bytes !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Set short.
if(!SetShort(&buffer,(_SHORT)17))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::GetUDPPacketChecksum : fail to set short !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Set short.
if(!SetShort(&buffer,lpPacket->nLength))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::GetUDPPacketChecksum : fail to set short !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Clear checksum.
lpPacket->nChecksum = 0;
//Wrap UDP packet.
if(!WrapUDPPacket(&buffer,lpPacket))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::GetUDPPacketChecksum : fail to wrap packet !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Get checksum.
lpPacket->nChecksum = GetChecksum16((_BYTE *)&buffer.block,buffer.nCount);
//Return true.
return _TRUE;
}
////////////////////////////////////////////////////////////////////////////////
//
// Initialize TCP packet.
//
////////////////////////////////////////////////////////////////////////////////
void InitializeTCPPacket(TCPPacket* lpPacket)
{
#ifdef _DEBUG
assert(lpPacket != NULL);
#endif
//Clear.
memset(lpPacket,0,sizeof(TCPPacket));
}
////////////////////////////////////////////////////////////////////////////////
//
// ICMP packet functions.
//
////////////////////////////////////////////////////////////////////////////////
void InitializeICMPPacket(ICMPPacket* lpPacket)
{
#ifdef _DEBUG
assert(lpPacket != NULL);
#endif
//Clear.
memset(lpPacket,0,sizeof(ICMPPacket));
}
////////////////////////////////////////////////////////////////////////////////
//
// Wrap ICMP packet.
//
////////////////////////////////////////////////////////////////////////////////
_BOOL WrapICMPPacket(SimpleBuffer* lpBuffer,ICMPPacket* lpPacket)
{
#ifdef _DEBUG
assert(lpBuffer != NULL && lpPacket != NULL);
#endif
//Set type.
if(!SetByte(lpBuffer,lpPacket->nType))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::WrapICMPPacket : fail to set byte !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Set code.
if(!SetByte(lpBuffer,lpPacket->nCode))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::WrapICMPPacket : fail to set byte !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Set checksum.
if(!SetShort(lpBuffer,lpPacket->nChecksum))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::WrapICMPPacket : fail to set short !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Set id.
if(!SetShort(lpBuffer,lpPacket->nID))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::WrapICMPPacket : fail to set short !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Set sequence number.
if(!SetShort(lpBuffer,lpPacket->nSequenceNumber))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::WrapICMPPacket : fail to set short !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Check count.
if(lpPacket->buffer.nCount > 0)
{
//Set bytes.
if(!SetBytes(lpBuffer,(_BYTE *)lpPacket->buffer.block,lpPacket->buffer.nCount))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::WrapICMPPacket : fail to set bytes !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
}
//Return true.
return _TRUE;
}
////////////////////////////////////////////////////////////////////////////////
//
// Unwrap ICMP packet.
//
////////////////////////////////////////////////////////////////////////////////
_BOOL UnwrapICMPPacket(SimpleBuffer* lpBuffer,ICMPPacket* lpPacket)
{
//Offset.
_INT32 nOffset;
#ifdef _DEBUG
assert(lpBuffer != NULL && lpPacket != NULL);
#endif
//Get type.
if(!GetByte(lpBuffer,(_BYTE *)&lpPacket->nType))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::UnwrapICMPPacket : fail to get byte !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Get code.
if(!GetByte(lpBuffer,(_BYTE *)&lpPacket->nCode))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::UnwrapICMPPacket : fail to get byte !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Get checksum.
if(!GetShort(lpBuffer,(_SHORT *)&lpPacket->nChecksum))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::UnwrapICMPPacket : fail to get short !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Get id.
if(!GetShort(lpBuffer,(_SHORT *)&lpPacket->nID))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::UnwrapICMPPacket : fail to get short !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Get sequence number.
if(!GetShort(lpBuffer,(_SHORT *)&lpPacket->nSequenceNumber))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::UnwrapICMPPacket : fail to get short !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Initialize buffer.
InitializeBuffer(&lpPacket->buffer);
//Get offset.
nOffset = lpBuffer->nOffset;
//Get bytes.
if(!GetBytes(lpBuffer,(_BYTE *)lpPacket->buffer.block,lpBuffer->nCount - nOffset))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::UnwrapICMPPacket : fail to get bytes !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Set size.
lpPacket->buffer.nCount = lpBuffer->nCount - nOffset;
//Return true.
return _TRUE;
}
////////////////////////////////////////////////////////////////////////////////
//
// Dump ICMP packet.
//
////////////////////////////////////////////////////////////////////////////////
void DumpICMPPacket(ICMPPacket* lpPacket)
{
//Format pointer.
_STRING lpstrFormated;
//Formated block.
_BLOCK blockFormated;
#ifdef _DEBUG
assert(lpPacket != NULL);
#endif
//Clear block.
memset(blockFormated,0,BLOCK_SIZE);
//Set formated.
lpstrFormated = (_STRING)blockFormated;
//Print.
lpstrFormated = FormatLine(lpstrFormated,
"Ethernet::DumpICMPPacket : dump packet !");
//Dump type.
lpstrFormated = FormatLine(lpstrFormated,
"\tType = %d (%s)",lpPacket->nType,GetICMPTypeComment(lpPacket->nType));
//Dump code.
lpstrFormated = FormatLine(lpstrFormated,
"\tCode = %d (%s)",lpPacket->nCode,GetICMPCodeComment(lpPacket->nCode));
//Dump checksum.
lpstrFormated = FormatLine(lpstrFormated,
"\tChecksum = 0x%04x",lpPacket->nChecksum);
//Dump id.
lpstrFormated = FormatLine(lpstrFormated,
"\tID = %d",lpPacket->nID);
//Dump sequence number.
lpstrFormated = FormatLine(lpstrFormated,
"\tSequence Number = %d",lpPacket->nSequenceNumber);
//Dump buffer.
lpstrFormated = DumpBuffer(lpstrFormated,&lpPacket->buffer);
//Log.
LogRequestedEvent((_STRING)blockFormated,
LOG_PACKET | LOG_INFORMATION);
}
////////////////////////////////////////////////////////////////////////////////
//
// Get ICMP packet checksum.
//
////////////////////////////////////////////////////////////////////////////////
_BOOL GetICMPPacketChecksum(ICMPPacket* lpPacket)
{
//Buffer
SimpleBuffer buffer;
#ifdef _DEBUG
assert(lpPacket != NULL);
#endif
//Clear checksum.
lpPacket->nChecksum = 0;
//Initialize buffer.
InitializeBuffer(&buffer);
//Wrap ICMP packet.
if(!WrapICMPPacket(&buffer,lpPacket))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::GetICMPPacketChecksum : fail to wrap packet !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Get checksum.
lpPacket->nChecksum = GetChecksum16((_BYTE *)&buffer.block,buffer.nCount);
//Return true.
return _TRUE;
}
////////////////////////////////////////////////////////////////////////////////
//
// Initialize IP packet.
//
////////////////////////////////////////////////////////////////////////////////
void InitializeIPPacket(IPPacket* lpPacket)
{
#ifdef _DEBUG
assert(lpPacket != NULL);
#endif
//Clear.
memset(lpPacket,0,sizeof(IPPacket));
//Set version.
lpPacket->nVersion = 4;
//Set header lenght.
lpPacket->nHeaderLength = 5;
//Set type of service.
lpPacket->nTypeOfService = 0;
//Set id.
lpPacket->nID = 0;
//Set flags.
lpPacket->nFlags = 0;
//Set segment offset.
lpPacket->nOffset = 0;
//Set ttl.
lpPacket->nTTL = 128;
}
////////////////////////////////////////////////////////////////////////////////
//
// Wrap IP packet header.
//
////////////////////////////////////////////////////////////////////////////////
_BOOL WrapIPPacketHeader(SimpleBuffer* lpBuffer,IPPacket* lpPacket)
{
#ifdef _DEBUG
assert(lpBuffer != NULL && lpPacket != NULL);
#endif
//Set version.
if(!SetByte(lpBuffer,(_BYTE)(((lpPacket->nVersion << 4) & 0xF0) | (lpPacket->nHeaderLength & 0x0F))))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::WrapIPPacketHeader : fail to set byte !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Set type of service.
if(!SetByte(lpBuffer,lpPacket->nTypeOfService))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::WrapIPPacketHeader : fail to set byte !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Set total length.
if(!SetShort(lpBuffer,lpPacket->nTotalLength))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::WrapIPPacketHeader : fail to set short !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Set id.
if(!SetShort(lpBuffer,lpPacket->nID))
{
#ifdef _DEBUG
LogRequestedEvent("Ethernet::WrapIPPacketHeader : fail to set short !",
LOG_PACKET | LOG_EXCEPTION);
#endif
return _FALSE;
}
//Set flags and offset.
if(!SetShort(lpBuffer,(_SHORT)(((lpPacket->nFlags << 13) & 0xE000) | (lpPacket->nOffset & 0x1FFF))))
{
#ifdef _DEBUG