forked from KolibriOS/kolibrios
194 lines
7.2 KiB
PHP
194 lines
7.2 KiB
PHP
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
|
|
;; ;;
|
||
|
|
;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
|
||
|
|
;; Distributed under terms of the GNU General Public License ;;
|
||
|
|
;; ;;
|
||
|
|
;; ICMP.INC ;;
|
||
|
|
;; ;;
|
||
|
|
;; Internet Control Message Protocol ( RFC 792 ) ;;
|
||
|
|
;; ;;
|
||
|
|
;; Last revision: 11.11.2006 ;;
|
||
|
|
;; ;;
|
||
|
|
;; This file contains the following: ;;
|
||
|
|
;; icmp_rx - processes ICMP-packets received by the IP layer ;;
|
||
|
|
;; ;;
|
||
|
|
;; Changes history: ;;
|
||
|
|
;; 22.09.2003 - [Mike Hibbett] : mikeh@oceanfree.net ;;
|
||
|
|
;; 11.11.2006 - [Johnny_B] and [smb] ;;
|
||
|
|
;; ;;
|
||
|
|
;; Current status: ;;
|
||
|
|
;; This implemetation of ICMP proto supports message of ECHO type.
|
||
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
|
|
|
||
|
|
$Revision$
|
||
|
|
|
||
|
|
|
||
|
|
struc ICMP_PACKET
|
||
|
|
{ .Type db ? ;+00
|
||
|
|
.Code db ? ;+01
|
||
|
|
.Checksum dw ? ;+02
|
||
|
|
.Identifier dw ? ;+04
|
||
|
|
.SequenceNumber dw ? ;+06
|
||
|
|
.Data db ? ;+08
|
||
|
|
}
|
||
|
|
|
||
|
|
virtual at 0
|
||
|
|
ICMP_PACKET ICMP_PACKET
|
||
|
|
end virtual
|
||
|
|
|
||
|
|
|
||
|
|
; Example:
|
||
|
|
; ECHO message format
|
||
|
|
;
|
||
|
|
;
|
||
|
|
; 0 1 2 3
|
||
|
|
; 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
|
||
|
|
; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
||
|
|
; | Type | Code | Checksum |
|
||
|
|
; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
||
|
|
; | Identifier | Sequence Number |
|
||
|
|
; +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
||
|
|
; | Data ...
|
||
|
|
; +-+-+-+-+-
|
||
|
|
;
|
||
|
|
|
||
|
|
;
|
||
|
|
; ICMP types & codes, RFC 792 and FreeBSD's ICMP sources
|
||
|
|
;
|
||
|
|
|
||
|
|
ICMP_ECHOREPLY equ 0 ; echo reply message
|
||
|
|
|
||
|
|
ICMP_UNREACH equ 3
|
||
|
|
ICMP_UNREACH_NET equ 0 ; bad net
|
||
|
|
ICMP_UNREACH_HOST equ 1 ; bad host
|
||
|
|
ICMP_UNREACH_PROTOCOL equ 2 ; bad protocol
|
||
|
|
ICMP_UNREACH_PORT equ 3 ; bad port
|
||
|
|
ICMP_UNREACH_NEEDFRAG equ 4 ; IP_DF caused drop
|
||
|
|
ICMP_UNREACH_SRCFAIL equ 5 ; src route failed
|
||
|
|
ICMP_UNREACH_NET_UNKNOWN equ 6 ; unknown net
|
||
|
|
ICMP_UNREACH_HOST_UNKNOWN equ 7 ; unknown host
|
||
|
|
ICMP_UNREACH_ISOLATED equ 8 ; src host isolated
|
||
|
|
ICMP_UNREACH_NET_PROHIB equ 9 ; prohibited access
|
||
|
|
ICMP_UNREACH_HOST_PROHIB equ 10 ; ditto
|
||
|
|
ICMP_UNREACH_TOSNET equ 11 ; bad tos for net
|
||
|
|
ICMP_UNREACH_TOSHOST equ 12 ; bad tos for host
|
||
|
|
ICMP_UNREACH_FILTER_PROHIB equ 13 ; admin prohib
|
||
|
|
ICMP_UNREACH_HOST_PRECEDENCE equ 14 ; host prec vio.
|
||
|
|
ICMP_UNREACH_PRECEDENCE_CUTOFF equ 15 ; prec cutoff
|
||
|
|
|
||
|
|
ICMP_SOURCEQUENCH equ 4 ; packet lost, slow down
|
||
|
|
|
||
|
|
ICMP_REDIRECT equ 5 ; shorter route, codes:
|
||
|
|
ICMP_REDIRECT_NET equ 0 ; for network
|
||
|
|
ICMP_REDIRECT_HOST equ 1 ; for host
|
||
|
|
ICMP_REDIRECT_TOSNET equ 2 ; for tos and net
|
||
|
|
ICMP_REDIRECT_TOSHOST equ 3 ; for tos and host
|
||
|
|
|
||
|
|
ICMP_ALTHOSTADDR equ 6 ; alternate host address
|
||
|
|
ICMP_ECHO equ 8 ; echo service
|
||
|
|
ICMP_ROUTERADVERT equ 9 ; router advertisement
|
||
|
|
ICMP_ROUTERADVERT_NORMAL equ 0 ; normal advertisement
|
||
|
|
ICMP_ROUTERADVERT_NOROUTE_COMMON equ 16 ; selective routing
|
||
|
|
|
||
|
|
ICMP_ROUTERSOLICIT equ 10 ; router solicitation
|
||
|
|
ICMP_TIMXCEED equ 11 ; time exceeded, code:
|
||
|
|
ICMP_TIMXCEED_INTRANS equ 0 ; ttl==0 in transit
|
||
|
|
ICMP_TIMXCEED_REASS equ 1 ; ttl==0 in reass
|
||
|
|
|
||
|
|
ICMP_PARAMPROB equ 12 ; ip header bad
|
||
|
|
ICMP_PARAMPROB_ERRATPTR equ 0 ; error at param ptr
|
||
|
|
ICMP_PARAMPROB_OPTABSENT equ 1 ; req. opt. absent
|
||
|
|
ICMP_PARAMPROB_LENGTH equ 2 ; bad length
|
||
|
|
|
||
|
|
ICMP_TSTAMP equ 13 ; timestamp request
|
||
|
|
ICMP_TSTAMPREPLY equ 14 ; timestamp reply
|
||
|
|
ICMP_IREQ equ 15 ; information request
|
||
|
|
ICMP_IREQREPLY equ 16 ; information reply
|
||
|
|
ICMP_MASKREQ equ 17 ; address mask request
|
||
|
|
ICMP_MASKREPLY equ 18 ; address mask reply
|
||
|
|
ICMP_TRACEROUTE equ 30 ; traceroute
|
||
|
|
ICMP_DATACONVERR equ 31 ; data conversion error
|
||
|
|
ICMP_MOBILE_REDIRECT equ 32 ; mobile host redirect
|
||
|
|
ICMP_IPV6_WHEREAREYOU equ 33 ; IPv6 where-are-you
|
||
|
|
ICMP_IPV6_IAMHERE equ 34 ; IPv6 i-am-here
|
||
|
|
ICMP_MOBILE_REGREQUEST equ 35 ; mobile registration req
|
||
|
|
ICMP_MOBILE_REGREPLY equ 36 ; mobile registreation reply
|
||
|
|
ICMP_SKIP equ 39 ; SKIP
|
||
|
|
|
||
|
|
ICMP_PHOTURIS equ 40 ; Photuris
|
||
|
|
ICMP_PHOTURIS_UNKNOWN_INDEX equ 1 ; unknown sec index
|
||
|
|
ICMP_PHOTURIS_AUTH_FAILED equ 2 ; auth failed
|
||
|
|
ICMP_PHOTURIS_DECRYPT_FAILED equ 3 ; decrypt failed
|
||
|
|
|
||
|
|
|
||
|
|
;***************************************************************************
|
||
|
|
; Function
|
||
|
|
; icmp_rx [by Johnny_B]
|
||
|
|
;
|
||
|
|
; Description
|
||
|
|
; ICMP protocol handler
|
||
|
|
; This is a kernel function, called by ip_rx
|
||
|
|
;
|
||
|
|
; IN:
|
||
|
|
; buffer_number - # of IP-buffer. This buffer must be reused or marked as empty afterwards
|
||
|
|
; IPPacketBase - IP_PACKET base address
|
||
|
|
; IPHeaderLength - Header length of IP_PACKET
|
||
|
|
;
|
||
|
|
; OUT:
|
||
|
|
; EAX=not defined
|
||
|
|
;
|
||
|
|
; All used registers will be saved
|
||
|
|
;
|
||
|
|
;***************************************************************************
|
||
|
|
proc icmp_rx stdcall uses ebx esi edi,\
|
||
|
|
buffer_number:DWORD,IPPacketBase:DWORD,IPHeaderLength:DWORD
|
||
|
|
|
||
|
|
mov esi,[IPPacketBase] ;esi=IP_PACKET base address
|
||
|
|
mov edi, esi
|
||
|
|
add edi,[IPHeaderLength] ;edi=ICMP_PACKET base address
|
||
|
|
|
||
|
|
cmp byte[edi + ICMP_PACKET.Type], ICMP_ECHO ; Is this an echo request? discard if not
|
||
|
|
jz .icmp_echo
|
||
|
|
|
||
|
|
mov eax, [buffer_number]
|
||
|
|
call freeBuff
|
||
|
|
jmp .exit
|
||
|
|
|
||
|
|
.icmp_echo:
|
||
|
|
|
||
|
|
; swap the source and destination addresses
|
||
|
|
mov ecx, [esi + IP_PACKET.DestinationAddress]
|
||
|
|
mov ebx, [esi + IP_PACKET.SourceAddress]
|
||
|
|
mov [esi + IP_PACKET.DestinationAddress], ebx
|
||
|
|
mov [esi + IP_PACKET.SourceAddress], ecx
|
||
|
|
|
||
|
|
; recalculate the IP header checksum
|
||
|
|
mov eax,[IPHeaderLength]
|
||
|
|
stdcall checksum_jb,esi,eax ;buf_ptr,buf_size
|
||
|
|
|
||
|
|
mov byte[esi + IP_PACKET.HeaderChecksum], ah
|
||
|
|
mov byte[esi + IP_PACKET.HeaderChecksum + 1], al ; ?? correct byte order?
|
||
|
|
|
||
|
|
mov byte[edi + ICMP_PACKET.Type], ICMP_ECHOREPLY ; change the request to a response
|
||
|
|
mov word[edi + ICMP_PACKET.Checksum], 0 ; clear ICMP checksum prior to re-calc
|
||
|
|
|
||
|
|
; Calculate the length of the ICMP data ( IP payload)
|
||
|
|
xor eax, eax
|
||
|
|
mov ah, byte[esi + IP_PACKET.TotalLength]
|
||
|
|
mov al, byte[esi + IP_PACKET.TotalLength + 1]
|
||
|
|
sub ax, word[IPHeaderLength] ;ax=ICMP-packet length
|
||
|
|
|
||
|
|
stdcall checksum_jb,edi,eax ;buf_ptr,buf_size
|
||
|
|
|
||
|
|
mov byte[edi + ICMP_PACKET.Checksum], ah
|
||
|
|
mov byte[edi + ICMP_PACKET.Checksum + 1], al
|
||
|
|
|
||
|
|
; Queue packet for transmission
|
||
|
|
mov ebx, [buffer_number]
|
||
|
|
mov eax, NET1OUT_QUEUE
|
||
|
|
call queue
|
||
|
|
|
||
|
|
.exit:
|
||
|
|
ret
|
||
|
|
endp
|