573 lines
14 KiB
NASM
573 lines
14 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2010-2020. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;; ping.asm - ICMP echo client 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 = 65536
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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 '../../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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; Init identifier with our PID number
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mcall 9, thread_info, -1
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mov eax, [thread_info.PID]
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mov [icmp_packet.id], ax
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; expand payload to 65504 bytes
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mov edi, icmp_packet.data+32
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mov ecx, 65504/32-1
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.expand_payload:
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mov esi, icmp_packet.data
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movsd
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movsd
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movsd
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movsd
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movsd
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movsd
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movsd
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movsd
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dec ecx
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jnz .expand_payload
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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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; reset stats
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mov [stats.tx], 0
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mov [stats.rx], 0
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mov [stats.time], 0
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parse_param:
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; parameters defaults
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mov [count], 4
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mov [size], 32
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mov [ttl], 128
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mov [timeout], 300
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; Check if any additional parameters were given
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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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cmp al, 't'
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jne @f
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mov [count], -1 ; infinite
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jmp .param_loop
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@@:
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cmp al, 'n'
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jne @f
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call ascii_to_dec
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test ebx, ebx
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jz .invalid
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mov [count], ebx
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jmp .param_loop
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@@:
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cmp al, 'l'
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jne @f
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call ascii_to_dec
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test ebx, ebx
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jz .invalid
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cmp ebx, 65500
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ja .invalid
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mov [size], ebx
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jmp .param_loop
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@@:
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cmp al, 'i'
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jne @f
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call ascii_to_dec
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test ebx, ebx
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jz .invalid
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cmp ebx, 255
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ja .invalid
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mov [ttl], ebx
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jmp .param_loop
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@@:
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cmp al, 'w'
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jne @f
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call ascii_to_dec
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test ebx, ebx
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jz .invalid
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mov [timeout], ebx
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jmp .param_loop
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@@:
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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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; 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 [socketnum], eax
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mcall connect, [socketnum], sockaddr1, 18
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cmp eax, -1
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je fail2
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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, [socketnum], 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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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 [size]
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push str3b
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call [con_printf]
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add esp, 2*4
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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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inc [stats.tx]
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mcall 26, 10 ; Get high precision timer count
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mov [time_reference], eax
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mov esi, [size]
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add esi, sizeof.ICMP_header
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xor edi, edi
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mcall send, [socketnum], icmp_packet
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cmp eax, -1
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je fail2
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mov [time_exceeded], 0
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.receiveloop:
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mov ebx, [timeout]
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sub ebx, [time_exceeded]
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jb .no_response
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mcall 23 ; Wait for network event with 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_exceeded], eax ; Exceeded time in 1/100 s
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; Receive reply
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mcall recv, [socketnum], buffer_ptr, BUFFERSIZE, MSG_DONTWAIT
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cmp eax, -1
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je .no_response
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test eax, eax
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jz fail2
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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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; make esi point to ICMP packet header
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add esi, buffer_ptr
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; Check identifier
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mov ax, [icmp_packet.id]
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cmp [esi + ICMP_header.Identifier], ax
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jne .receiveloop
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; we have a response, print the sender IP
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push esi
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mov eax, [buffer_ptr + IPv4_header.SourceAddress]
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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 str11
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call [con_printf]
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add esp, 5*4
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pop esi
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; What kind of response is it?
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cmp [esi + ICMP_header.Type], ICMP_ECHOREPLY
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je .echo_reply
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cmp [esi + ICMP_header.Type], ICMP_TIMXCEED
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je .ttl_exceeded
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jmp .invalid
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.echo_reply:
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; Validate the payload
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add esi, sizeof.ICMP_header
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mov ecx, [size]
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mov edi, icmp_packet.data
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repe cmpsb
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jne .miscomp
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; update stats
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inc [stats.rx]
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mov eax, [time_exceeded]
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add [stats.time], eax
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; Print time exceeded
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movzx eax, [buffer_ptr + IPv4_header.TimeToLive]
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push eax
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mov eax, [time_exceeded]
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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 [recvd]
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push str7
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call [con_printf]
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add esp, 5*4
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jmp .continue
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.ttl_exceeded:
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push str14
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call [con_write_asciiz]
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jmp .continue
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; Error in packet, print it to user
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.miscomp:
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sub edi, icmp_packet.data+1
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push edi
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push str9
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call [con_printf]
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add esp, 2*4
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jmp .continue
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; Invalid reply
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.invalid:
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push str10
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call [con_write_asciiz]
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jmp .continue
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; Timeout!
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.no_response:
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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 [icmp_packet.seq]
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cmp [count], -1
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je .forever
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dec [count]
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jz .stats
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.forever:
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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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; Print statistics
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.stats:
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cmp [stats.rx], 0
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jne @f
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xor eax, eax
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xor edx, edx
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jmp .zero
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@@:
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xor edx, edx
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mov eax, [stats.time]
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div [stats.rx]
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xor edx, edx
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mov ebx, 10
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div ebx
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.zero:
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push edx
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push eax
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push [stats.rx]
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push [stats.tx]
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push str12
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call [con_printf]
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add esp, 5*4
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jmp main
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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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; data
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title db 'ICMP echo (ping) client',0
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str_welcome db 'Please enter the hostname or IP-address of the host you want to ping,',10
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db 'or just press enter to exit.',10,10
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db 'Options:',10
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db ' -t Send packets till users abort.',10
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db ' -n number Number of requests to send.',10
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db ' -i TTL Time to live.',10
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db ' -l size Size of echo request.',10
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db ' -w time-out Time-out in hundredths of a second.',10,0
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str_prompt db 10,'> ',0
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str3 db 'Pinging to ',0
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str3b db ' with %u data bytes',10,0
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str4 db 10,0
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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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str11 db 'Answer from %u.%u.%u.%u: ',0
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str7 db 'bytes=%u time=%u.%u ms TTL=%u',10,0
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str8 db 'Timeout',10,0
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str9 db 'miscompare at offset %u.',10,0
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str10 db 'invalid reply.',10,0
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str14 db 'TTL expired.',10,0
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str12 db 10,'Statistics:',10,'%u packets sent, %u packets received',10,'average response time=%u.%u ms',10,0
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sockaddr1:
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dw AF_INET4
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.port dw 0
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.ip dd 0
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rb 10
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time_reference dd ? ; start time of sent packet
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time_exceeded dd ? ; time exceeded between send and receive
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ip_ptr dd ?
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count dd ?
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size dd ?
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ttl dd ?
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timeout dd ?
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recvd dd ? ; received number of bytes in last packet
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stats:
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.tx dd ?
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.rx dd ?
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.time dd ?
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; import
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align 4
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@IMPORT:
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library network, 'network.obj', console, 'console.obj'
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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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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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socketnum dd ?
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icmp_packet db ICMP_ECHO ; type
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db 0 ; code
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dw 0 ; checksum
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.id dw 0 ; identifier
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.seq dw 0x0000 ; sequence number
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.data db 'abcdefghijklmnopqrstuvwxyz012345'
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I_END:
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rb 65504-32
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thread_info process_information
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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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