193 lines
5.3 KiB
C
193 lines
5.3 KiB
C
/*++
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Copyright (c) 1994 Microsoft Corporation
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Module Name:
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dhcpprt.c
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Abstract:
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This module contains DHCP specific utility routines used by the
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DHCP components.
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Author:
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Madan Appiah (madana) 16-Sep-1993
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Revision History:
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--*/
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#include <dhcpl.h>
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#if DBG
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VOID
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DhcpDumpMessage(
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DWORD DhcpDebugFlag,
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LPDHCP_MESSAGE DhcpMessage,
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ULONG MessageSize
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)
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/*++
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Routine Description:
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This function dumps a DHCP packet in human readable form.
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Arguments:
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DhcpDebugFlag - debug flag that indicates what we are debugging.
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DhcpMessage - A pointer to a DHCP message.
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Return Value:
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None.
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--*/
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{
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LPOPTION option;
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BYTE i;
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DhcpPrint(( DhcpDebugFlag, "Dhcp message: \n\n"));
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DhcpPrint(( DhcpDebugFlag, "Operation :"));
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if ( DhcpMessage->Operation == BOOT_REQUEST ) {
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DhcpPrint(( DhcpDebugFlag, "BootRequest\n"));
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} else if ( DhcpMessage->Operation == BOOT_REPLY ) {
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DhcpPrint(( DhcpDebugFlag, "BootReply\n"));
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} else {
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DhcpPrint(( DhcpDebugFlag, "Unknown\n"));
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}
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DhcpPrint(( DhcpDebugFlag, "Hardware Address type : %d\n", DhcpMessage->HardwareAddressType));
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DhcpPrint(( DhcpDebugFlag, "Hardware Address Length: %d\n", DhcpMessage->HardwareAddressLength));
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DhcpPrint(( DhcpDebugFlag, "Hop Count : %d\n", DhcpMessage->HopCount ));
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DhcpPrint(( DhcpDebugFlag, "Transaction ID : %lx\n", DhcpMessage->TransactionID ));
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DhcpPrint(( DhcpDebugFlag, "Seconds Since Boot : %d\n", DhcpMessage->SecondsSinceBoot ));
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DhcpPrint(( DhcpDebugFlag, "Client IP Address : " ));
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DhcpPrint(( DhcpDebugFlag, "%s\n",
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inet_ntoa(*(struct in_addr *)&DhcpMessage->ClientIpAddress ) ));
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DhcpPrint(( DhcpDebugFlag, "Your IP Address : " ));
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DhcpPrint(( DhcpDebugFlag, "%s\n",
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inet_ntoa(*(struct in_addr *)&DhcpMessage->YourIpAddress ) ));
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DhcpPrint(( DhcpDebugFlag, "Server IP Address : " ));
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DhcpPrint(( DhcpDebugFlag, "%s\n",
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inet_ntoa(*(struct in_addr *)&DhcpMessage->BootstrapServerAddress ) ));
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DhcpPrint(( DhcpDebugFlag, "Relay Agent IP Address : " ));
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DhcpPrint(( DhcpDebugFlag, "%s\n",
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inet_ntoa(*(struct in_addr *)&DhcpMessage->RelayAgentIpAddress ) ));
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DhcpPrint(( DhcpDebugFlag, "Hardware Address : "));
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for ( i = 0; i < DhcpMessage->HardwareAddressLength; i++ ) {
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DhcpPrint(( DhcpDebugFlag, "%2.2x", DhcpMessage->HardwareAddress[i] ));
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}
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option = &DhcpMessage->Option;
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DhcpPrint(( DhcpDebugFlag, "\n\n"));
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DhcpPrint(( DhcpDebugFlag, "Magic Cookie: "));
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for ( i = 0; i < 4; i++ ) {
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DhcpPrint(( DhcpDebugFlag, "%d ", *((LPBYTE)option)++ ));
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}
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DhcpPrint(( DhcpDebugFlag, "\n\n"));
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DhcpPrint(( DhcpDebugFlag, "Options:\n"));
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while ( option->OptionType != 255 ) {
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DhcpPrint(( DhcpDebugFlag, "\tType = %d ", option->OptionType ));
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for ( i = 0; i < option->OptionLength; i++ ) {
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DhcpPrint(( DhcpDebugFlag, "%2.2x", option->OptionValue[i] ));
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}
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DhcpPrint(( DhcpDebugFlag, "\n"));
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if ( option->OptionType == OPTION_PAD ||
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option->OptionType == OPTION_END ) {
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option = (LPOPTION)( (LPBYTE)(option) + 1);
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} else {
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option = (LPOPTION)( (LPBYTE)(option) + option->OptionLength + 2);
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}
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if ( (ULONG)((LPBYTE)option - (LPBYTE)DhcpMessage) > MessageSize ) {
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DhcpPrint(( DhcpDebugFlag, "End of message, but no trailer found!\n"));
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break;
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}
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}
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}
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VOID
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MadcapDumpMessage(
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DWORD DhcpDebugFlag,
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LPMADCAP_MESSAGE MadcapMessage,
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ULONG MessageSize
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)
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/*++
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Routine Description:
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This function dumps a DHCP packet in human readable form.
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Arguments:
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DhcpDebugFlag - debug flag that indicates what we are debugging.
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MadcapMessage - A pointer to a DHCP message.
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Return Value:
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None.
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--*/
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{
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WIDE_OPTION UNALIGNED* NextOpt;
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BYTE UNALIGNED* EndOpt;
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DWORD Size;
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DWORD OptionType;
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BYTE i;
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DhcpPrint(( DhcpDebugFlag, "Madcap message: \n\n"));
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DhcpPrint(( DhcpDebugFlag, "Version : %d\n",MadcapMessage->Version));
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DhcpPrint(( DhcpDebugFlag, "MessageType : %d\n",MadcapMessage->MessageType));
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DhcpPrint(( DhcpDebugFlag, "AddressFamily : %d\n",ntohs(MadcapMessage->AddressFamily)));
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DhcpPrint(( DhcpDebugFlag, "TransactionId : %d\n",MadcapMessage->TransactionID));
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DhcpPrint(( DhcpDebugFlag, "\n\n"));
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DhcpPrint(( DhcpDebugFlag, "Options:\n"));
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// MBUG CHANGE 255 TO end option
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NextOpt = (WIDE_OPTION UNALIGNED*)&MadcapMessage->Option;
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EndOpt = (PBYTE)MadcapMessage + MessageSize;
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while( NextOpt->OptionValue <= EndOpt &&
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MADCAP_OPTION_END != (OptionType = ntohs(NextOpt->OptionType)) ) {
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Size = ntohs(NextOpt->OptionLength);
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if ((NextOpt->OptionValue + Size) > EndOpt) {
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break;
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}
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DhcpPrint(( DhcpDebugFlag, "\tType = %d ", OptionType ));
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for ( i = 0; i < Size; i++ ) {
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DhcpPrint(( DhcpDebugFlag, "%2.2x", NextOpt->OptionValue[i] ));
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}
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DhcpPrint(( DhcpDebugFlag, "\n"));
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NextOpt = (WIDE_OPTION UNALIGNED*)(NextOpt->OptionValue + Size);
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}
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}
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#endif
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