600 lines
14 KiB
NASM
600 lines
14 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2010-2017. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;; tracert.asm - Trace network route for KolibriOS ;;
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;; ;;
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;; Written by hidnplayr@kolibrios.org ;;
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;; ;;
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;; GNU GENERAL PUBLIC LICENSE ;;
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;; Version 2, June 1991 ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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format binary as ""
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BUFFERSIZE = 1500
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IDENTIFIER = 0x1337
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__DEBUG__ = 1 ; enable/disable
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__DEBUG_LEVEL__ = 2 ; 1 = all, 2 = errors
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use32
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org 0x0
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db 'MENUET01' ; signature
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dd 1 ; header version
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dd START ; entry point
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dd I_END ; initialized size
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dd IM_END+0x1000 ; required memory
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dd IM_END+0x1000 ; stack pointer
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dd params ; parameters
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dd 0 ; path
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include '../../proc32.inc'
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include '../../macros.inc'
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purge mov,add,sub
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include '../../dll.inc'
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include '../../struct.inc'
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include '../../debug-fdo.inc'
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include '../../network.inc'
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include '../icmp.inc'
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include '../ip.inc'
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START:
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; init heap
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mcall 68, 11
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test eax, eax
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jz exit
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; load libraries
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stdcall dll.Load, @IMPORT
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test eax, eax
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jnz exit
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; initialize console
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push 1
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call [con_start]
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push title
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push 250
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push 80
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push 25
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push 80
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call [con_init]
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; main loop
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cmp byte[params], 0
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jne parse_param
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push str_welcome
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call [con_write_asciiz]
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main:
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; write prompt
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push str_prompt
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call [con_write_asciiz]
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; read string
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mov esi, params
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push 1024
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push esi
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call [con_gets]
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; check for exit
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test eax, eax
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jz exit
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cmp byte [esi], 10
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jz exit
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; delete terminating '\n'
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push esi
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@@:
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lodsb
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test al, al
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jnz @b
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mov [esi-2], al
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pop esi
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parse_param:
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; Check if any additional parameters were given
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DEBUGF 2, "parse parameters\n"
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mov esi, params
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mov ecx, 1024
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.addrloop:
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lodsb
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test al, al
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jz .resolve
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cmp al, ' '
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jne .addrloop
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mov byte[esi-1], 0
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jmp .param
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.param_loop:
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lodsb
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test al, al
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jz .resolve
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cmp al, ' '
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jne .invalid
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.param:
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lodsb
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cmp al, '-'
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jne .invalid
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lodsb
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; implement more parameters here
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.invalid:
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push str13
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call [con_write_asciiz]
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jmp main
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.resolve:
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DEBUGF 2, "resolve\n"
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; resolve name
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push esp ; reserve stack place
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push esp ; fourth parameter
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push 0 ; third parameter
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push 0 ; second parameter
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push params ; first parameter
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call [getaddrinfo]
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pop esi
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; test for error
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test eax, eax
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jnz fail
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; convert IP address to decimal notation
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mov eax, [esi+addrinfo.ai_addr]
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mov eax, [eax+sockaddr_in.sin_addr]
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mov [sockaddr1.ip], eax
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push eax
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call [inet_ntoa]
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; write result
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mov [ip_ptr], eax
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push eax
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; free allocated memory
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push esi
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call [freeaddrinfo]
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push str4
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call [con_write_asciiz]
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mcall socket, AF_INET4, SOCK_RAW, IPPROTO_ICMP
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cmp eax, -1
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jz fail2
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mov [icmp_socket], eax
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mcall socket, AF_INET4, SOCK_DGRAM, 0
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cmp eax, -1
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jz fail2
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mov [udp_socket], eax
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mcall connect, [udp_socket], sockaddr1, 18
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cmp eax, -1
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je fail2
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mcall 40, EVM_STACK
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push str3
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call [con_write_asciiz]
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push [ip_ptr]
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call [con_write_asciiz]
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push str4
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call [con_write_asciiz]
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mov [ttl], 1
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;; mcall send, [udp_socket], udp_packet, 5, 0 ; dummy send
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mcall recv, [icmp_socket], buffer_ptr, BUFFERSIZE, MSG_DONTWAIT ;; dummy read
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mainloop:
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call [con_get_flags]
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test eax, 0x200 ; con window closed?
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jnz exit_now
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pushd [ttl]
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pushd str9
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call [con_printf]
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add esp, 2*4
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DEBUGF 2, "Setsockopt\n"
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pushd [ttl]
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pushd 4 ; length of option
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pushd IP_TTL
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pushd IPPROTO_IP
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mcall setsockopt, [udp_socket], esp
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add esp, 16
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cmp eax, -1
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je fail2
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DEBUGF 2, "Sending\n"
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mcall 26, 10 ; Get high precision timer count
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mov [time_reference], eax
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mcall send, [udp_socket], udp_packet, 5, 0
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cmp eax, -1
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je fail2
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DEBUGF 2, "Packet sent\n", str_ini_int
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.receive:
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mcall 23, [timeout]
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mcall 26, 10 ; Get high precision timer count
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sub eax, [time_reference]
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jz @f
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xor edx, edx
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mov ebx, 100000
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div ebx
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cmp edx, 50000
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jb @f
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inc eax
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@@:
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mov [time_reference], eax
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; Receive reply
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mcall recv, [icmp_socket], buffer_ptr, BUFFERSIZE, MSG_DONTWAIT
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cmp eax, -1
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je .timeout
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test eax, eax
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jz fail2
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DEBUGF 2, "Answer after %u\n", eax
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; IP header length
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movzx esi, byte[buffer_ptr]
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and esi, 0xf
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shl esi, 2
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; Check packet length
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sub eax, esi
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sub eax, sizeof.ICMP_header
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jb .invalid
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mov [recvd], eax
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DEBUGF 2, "Packet length OK\n", eax
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; make esi point to ICMP packet header
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add esi, buffer_ptr
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; Verify packet
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;; movzx eax, [esi + sizeof.ICMP_header + IPv4_header.TimeToLive]
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;; cmp eax, [ttl]
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;; jne .receive
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; What kind of response is it?
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cmp [esi + ICMP_header.Type], ICMP_UNREACH_PORT
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je .last
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cmp [esi + ICMP_header.Type], ICMP_TIMXCEED
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jne .invalid
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call .print
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jmp .continue
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.last:
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call .print
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jmp main
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.print:
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DEBUGF 2, "Valid response\n"
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; we have a response, print a line
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mov eax, [time_reference]
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xor edx, edx
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mov ebx, 10
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div ebx
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push edx
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push eax
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push str1
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call [con_printf]
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add esp, 3*4
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mov ebx, [buffer_ptr + IPv4_header.SourceAddress]
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push ebx
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call reverse_dns_lookup
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pop eax
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rol eax, 16
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movzx ebx, ah
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push ebx
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movzx ebx, al
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push ebx
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shr eax, 16
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movzx ebx, ah
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push ebx
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movzx ebx, al
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push ebx
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push str2
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call [con_printf]
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add esp, 5*4
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ret
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; Invalid reply
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.invalid:
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DEBUGF 2, "Invalid response\n"
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push str10
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call [con_write_asciiz]
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jmp main ;.continue
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; Timeout!
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.timeout:
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DEBUGF 2, "Timeout\n", eax
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push str8
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call [con_write_asciiz]
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; Send more ICMP packets ?
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.continue:
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inc [ttl]
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; wait a second before sending next request
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mcall 5, 100
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jmp mainloop
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; DNS error
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fail:
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push str5
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call [con_write_asciiz]
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jmp main
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; Socket error
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fail2:
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push str6
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call [con_write_asciiz]
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jmp main
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; Finally.. exit!
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exit:
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push 1
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call [con_exit]
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exit_now:
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mcall -1
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ascii_to_dec:
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lodsb
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cmp al, ' '
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jne .fail
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xor eax, eax
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xor ebx, ebx
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.loop:
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lodsb
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test al, al
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jz .done
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cmp al, ' '
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je .done
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sub al, '0'
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jb .fail
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cmp al, 9
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ja .fail
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lea ebx, [ebx*4+ebx]
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lea ebx, [ebx*2+eax]
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jmp .loop
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.fail:
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xor ebx, ebx
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.done:
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dec esi
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ret
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; ebx = ip
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reverse_dns_lookup:
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push ebx
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mcall socket, AF_INET4, SOCK_DGRAM, 0
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pop ebx
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cmp eax, -1
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je .fail
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mov [dns_socket], eax
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push ebx
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mcall connect, [dns_socket], sockaddr2, 18
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pop ebx
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cmp eax, -1
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je .fail
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mov edi, dns_pkt.name
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rol ebx, 8
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movzx eax, bl
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call byte_to_ascii
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rol ebx, 8
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movzx eax, bl
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call byte_to_ascii
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rol ebx, 8
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movzx eax, bl
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call byte_to_ascii
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rol ebx, 8
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movzx eax, bl
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call byte_to_ascii
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mov esi, dns_tr
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mov ecx, dns_tr.length
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rep movsb
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sub edi, dns_pkt
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mov esi, edi
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mcall send, [dns_socket], dns_pkt, , 0
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cmp eax, -1
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je .fail
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push esi
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mcall recv, [dns_socket], buffer_ptr, BUFFERSIZE, 0
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pop esi
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mcall close, [dns_socket]
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cmp word[buffer_ptr+6], 0 ; answers
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je .fail
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add esi, buffer_ptr+12
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mov edi, buffer_ptr
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xor ecx, ecx
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lodsb
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test al, al
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jz @f
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movzx ecx, al
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@@:
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rep movsb
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lodsb
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test al, al
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jz @f
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movzx ecx, al
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mov al, '.'
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stosb
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jmp @r
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@@:
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stosb
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push buffer_ptr
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call [con_write_asciiz]
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push str7
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call [con_write_asciiz]
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ret
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.fail:
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ret
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; input: eax - number
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; edi - ptr
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byte_to_ascii:
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push ebx ecx edx
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xor edx, edx ; result
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xor ecx, ecx ; byte count
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inc ecx
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mov bl, 10 ; divisor
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div bl
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mov dl, ah
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add dl, '0'
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and ax, 0x00ff
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jz .ok
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inc ecx
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shl edx, 8
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div bl
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mov dl, ah
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add dl, '0'
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and ax, 0x00ff
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jz .ok
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inc ecx
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shl edx, 8
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mov dl, al
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add dl, '0'
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.ok:
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shl edx, 8
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mov dl, cl
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mov [edi], edx
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add edi, ecx
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inc edi
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pop edx ecx ebx
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ret
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; data
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title db 'Trace route',0
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str_welcome db 'Please enter the hostname or IP-address of the host you want to trace,',10
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db 'or just press enter to exit.',10,10,0
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str_prompt db 10,'> ',0
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str3 db 'Tracing route to ',0
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str4 db 10,0
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str7 db ' ', 0
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str5 db 'Name resolution failed.',10,0
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str6 db 'Socket error.',10,0
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str13 db 'Invalid parameter(s)',10,0
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str9 db '%u ',0
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str1 db '%u.%u ms ',0
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str2 db '[%u.%u.%u.%u]',10,0
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str10 db 'Invalid reply',10,0
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str8 db 'Timeout!',10,0
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sockaddr1:
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dw AF_INET4
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.port dw 666
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.ip dd 0
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rb 10
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sockaddr2:
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dw AF_INET4
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.port dw 53 shl 8 ; DNS port
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.ip dd 0x08080808 ; Google DNS
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rb 10
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time_reference dd ?
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ip_ptr dd ?
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ttl dd ?
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timeout dd 500
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recvd dd ? ; received number of bytes in last packet
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; import
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align 4
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@IMPORT:
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library console, 'console.obj', \
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network, 'network.obj'
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import console, \
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con_start, 'START', \
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con_init, 'con_init', \
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con_write_asciiz, 'con_write_asciiz', \
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con_printf, 'con_printf', \
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con_exit, 'con_exit', \
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con_gets, 'con_gets',\
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con_cls, 'con_cls',\
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con_getch2, 'con_getch2',\
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con_set_cursor_pos, 'con_set_cursor_pos',\
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con_get_flags, 'con_get_flags'
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import network, \
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getaddrinfo, 'getaddrinfo', \
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freeaddrinfo, 'freeaddrinfo', \
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inet_ntoa, 'inet_ntoa'
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include_debug_strings
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icmp_socket dd ?
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udp_socket dd ?
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dns_socket dd ?
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udp_packet db 'hello!'
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dns_tr:
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db 7,'in-addr',4,'arpa',0
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dw 0x0C00 ; Qtype: PTR
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dw 0x0100 ; Class: IN
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.length = $ - dns_tr
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dns_pkt:
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dw 0x9A02 ; Transaction ID
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dw 0x0001 ; Flags: Recursive desired
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dw 0x0100 ; Questions
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dw 0x0000 ; Answers
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dw 0x0000 ; Authority RR
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dw 0x0000 ; Additional RR
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.name rb 512
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I_END:
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params rb 1024
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buffer_ptr: rb BUFFERSIZE
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IM_END:
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