forked from KolibriOS/kolibrios
298 lines
8.4 KiB
NASM
298 lines
8.4 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2012. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;; pppoe.asm - PPPoE dialer 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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use32
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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 mem ; required memory
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dd mem ; stack pointer
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dd 0 ; parameters
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dd 0 ; path
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include '../macros.inc'
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purge mov,add,sub
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include '../proc32.inc'
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include '../dll.inc'
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include '../network.inc'
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include '../struct.inc'
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; Ethernet protocol numbers
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ETHER_PPP_DISCOVERY = 0x6388
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ETHER_PPP_SESSION = 0x6488
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; PPP protocol numbers
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PPP_IPv4 = 0x2100
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PPP_LCP = 0x21c0
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; PPP Active Discovery...
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PPPoE_PADI = 0x09 ; .. Initiation
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PPPoE_PADO = 0x07 ; .. Offer
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PPPoE_PADR = 0x19 ; .. Request
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PPPoE_PADS = 0x65 ; .. Session-confirmation
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PPPoE_PADT = 0xa7 ; .. Terminate
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TAG_EOL = 0x0000
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TAG_SERVICE_NAME= 0x0101
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TAG_AC_NAME = 0x0201
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TAG_HOST_UNIQ = 0x0301
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TAG_AC_COOKIE = 0x0401
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LCP_config_request = 1
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LCP_config_ack = 2
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LCP_config_nak = 3
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LCP_config_reject = 4
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LCP_terminate_request = 5
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LCP_terminate_ack = 6
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LCP_code_reject = 7
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LCP_protocol_reject = 8
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LCP_echo_request = 9
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LCP_echo_reply = 10
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LCP_discard_request = 11
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struct ETH_frame
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DestMac dp ?
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SrcMac dp ?
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Type dw ?
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ends
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struct PPPoE_frame ETH_frame
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VersionAndType db ?
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Code db ?
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SessionID dw ?
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Length dw ? ; Length of payload, does NOT include the length PPPoE header.
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Payload rb 0
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ends
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struct PPP_frame PPPoE_frame
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Protocol dw ?
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ends
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struct LCP_frame PPP_frame
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LCP_Code db ?
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LCP_Identifier db ?
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LCP_Length dw ?
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LCP_Data rb 0
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ends
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; entry point
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start:
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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 25
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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:
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mcall 40, 1 shl 7
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call [con_cls]
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; Welcome user
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push str1
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call [con_write_asciiz]
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mcall socket, 777, 3, 666
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mov [socketnum], eax
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mcall send, [socketnum], PADI, PADI.length, 0
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mainloop:
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mcall 10
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call [con_get_flags]
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test eax, 0x200 ; con window closed?
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jnz close_conn
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mcall recv, [socketnum], buffer, 4096
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cmp eax, sizeof.PPPoE_frame
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jb mainloop
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cmp word [buffer + ETH_frame.Type], ETHER_PPP_SESSION
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je LCP_input
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cmp word [buffer + ETH_frame.Type], ETHER_PPP_DISCOVERY
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jne mainloop
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cmp [buffer + PPPoE_frame.Code], PPPoE_PADO
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je pado
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cmp [buffer + PPPoE_frame.Code], PPPoE_PADS
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je pads
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cmp [buffer + PPPoE_frame.Code], PPPoE_PADT
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je padt
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jmp mainloop
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pado:
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push str2
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call [con_write_asciiz]
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lea esi, [buffer + ETH_frame.SrcMac] ; source mac -> dest mac
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lea edi, [buffer + ETH_frame.DestMac]
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movsw
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movsd
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mov byte [buffer + PPPoE_frame.Code], PPPoE_PADR ; change packet type to PADR
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mov al, byte [buffer + PPPoE_frame.Length + 1] ; get packet size
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mov ah, byte [buffer + PPPoE_frame.Length + 0]
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movzx esi, ax
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add esi, sizeof.PPPoE_frame
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mcall send, [socketnum], buffer, , 0 ; now send it!
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jmp mainloop
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pads:
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push str3
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call [con_write_asciiz]
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mov edx, dword [buffer + ETH_frame.SrcMac] ; source mac -> dest mac
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mov si, word [buffer + ETH_frame.SrcMac + 4]
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mov dword [PADT.mac], edx
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mov word [PADT.mac + 4], si
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mov cx, word [buffer + PPPoE_frame.SessionID] ; and Session ID
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mov [PADT.sid], cx
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mcall 76, API_PPPOE + 0 ; Start PPPoE session
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jmp mainloop
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padt:
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push str4
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call [con_write_asciiz]
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mcall 76, API_PPPOE + 1 ; Stop PPPoE session
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exit:
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mcall close, [socketnum]
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mcall -1
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close_conn:
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mcall send, [socketnum], PADT, PADT.length, 0
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jmp exit
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LCP_input:
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cmp word [buffer + PPP_frame.Protocol], PPP_LCP
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jne mainloop
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cmp [buffer + LCP_frame.LCP_Code], LCP_echo_request
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je .echo
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.dump:
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jmp mainloop
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.echo:
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mov [buffer + LCP_frame.LCP_Code], LCP_echo_reply
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lea esi, [buffer + ETH_frame.SrcMac] ; source mac -> dest mac
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lea edi, [buffer + ETH_frame.DestMac]
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movsw
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movsd
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mov esi, eax
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mcall send, [socketnum], buffer, , 0 ; now send it back!
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jmp mainloop
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; data
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title db 'PPPoE',0
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str1 db 'Sending PADI',13,10,0
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str2 db 'Got PADO',13,10,'Sending PADR',13,10,0
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str3 db 'Got PADS',13,10,'starting PPPoE session',13,10,0
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str4 db 'Got PADT - connection terminated by Access Concentrator',13,10,0
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PADI:
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dp 0xffffffffffff ; dest mac: broadcast
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dp 0 ; source mac (overwritten by kernel)
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dw ETHER_PPP_DISCOVERY ; type
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db 0x11 ; Version and Type
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db PPPoE_PADI ; Code
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dw 0 ; session ID
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dw 20 shl 8 ; Payload Length
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dw TAG_SERVICE_NAME ; tag
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dw 0x0000 ; length
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dw TAG_HOST_UNIQ ; tag
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dw 0x0c00 ; length = 12 bytes
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dd 0xdead ; some random id
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dd 0xbeef
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dd 0x1337
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.length = $ - PADI
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PADT:
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.mac dp 0 ; Dest mac, to be filled in
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dp 0 ; source mac (overwritten by kernel)
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dw ETHER_PPP_DISCOVERY ; Type
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db 0x11 ; Version and Type
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db PPPoE_PADT ; Code: terminate connection
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.sid dw 0 ; session id, to be filled in
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dw 0 ; PAyload length = 0
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.length = $ - PADT
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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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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_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_write_string, 'con_write_string',\
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con_get_flags, 'con_get_flags'
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i_end:
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socketnum dd ?
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buffer rb 4096
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rb 4096 ; stack
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mem:
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