2256 lines
49 KiB
NASM
2256 lines
49 KiB
NASM
;
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; PPP.ASM
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;
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; Compile with FASM for Menuet
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; This program dials into an ISP and establishes a PPP connection
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;
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; Version 11 26th January 2004
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;
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; This code is a port of the PPP dialer program by Microchip, from
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; their application note AN724
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; It has been ported by Mike Hibbett mikeh@oceanfree.net for Menuet
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;
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; 26/1/04 - Mike Hibbett - added support for com port selected by
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; stackcfg
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; 2/5/03 - Shrirang - Added Abort Strings To sendwait to get out early
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; if modem sends abort strings like NO CARRIER etc.
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;
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; The original copyright statement follows
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;//////////////////////////////////////////////////////////////////////////
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;//
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;//PING.C version 1.10 July 29/99 (C)opyright by Microchip Technology Inc
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;//
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;//////////////////////////////////////////////////////////////////////////
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FALSE equ 0
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TRUE equ 1
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DEBUG_OUTPUT equ TRUE ; If FALSE, not debugging info outputted
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DEBUG_PPP_OUTPUT equ TRUE ; write PPP status msgs to debug board?
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DEBUG_PORT2_OUTPUT equ TRUE ; write debug data also to com2
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BAUD_9600 equ 12
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BAUD_57600 equ 2
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; The next line sets the baud rate of the connection to the modem
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BAUDRATE equ BAUD_57600
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LINE_END equ 0x0D ; End of input data character
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; Defines for Internet constants
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REQ equ 1 ; Request options list for PPP negotiations
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PPP_ACK equ 2 ; Acknowledge options list for PPP negotiations
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PPP_NAK equ 3 ; Not acknowledged options list for PPP neg
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REJ equ 4 ; Reject options list for PPP negotiations
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TERM equ 5 ; Termination packet for LCP to close connectio
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LCP_ECHO_REQ equ 9
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LCP_ECHO_REP equ 10
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IP equ 0x0021 ; Internet Protocol packet
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IPCP equ 0x8021 ; Internet Protocol Configure Protocol packet
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CCP equ 0x80FD ; Compression Configure Protocol packet
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LCP equ 0xC021 ; Link Configure Protocol packet
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PAP equ 0xC023 ; Password Authenication Protocol packet
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MaxRx equ 1500
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MaxTx equ 1500
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use32
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org 0x0
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db 'MENUET00' ; 8 byte id
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dd 38 ; required os
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dd STARTAPP ; program start
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dd I_END ; program image size
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dd 0x100000 ; required amount of memory
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; esp = 0x7FFF0
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dd 0x00000000 ; reserved=no extended header
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include "lang.inc"
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include "macros.inc"
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include "chat.inc" ; Hosts modem chatting routine
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STARTAPP:
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; mov eax, 0x3f8
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; mov [comport], eax
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; mov eax, 4
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; mov [comirq], eax
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; Get the com port & IRQ to use from the kernel stack config option
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mov eax, 52 ; Stack Interface
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mov ebx, 0 ; read configuration word
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int 0x40
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mov ecx, eax
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shr ecx, 16 ; get the port address
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mov [comport], ecx
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shr eax, 8
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and eax, 0x000000FF ; get the irq
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mov [comirq], eax
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mov eax, [comport]
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add eax, 0x01000000
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mov [irqtable], eax
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call enable_port
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appdsp:
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mov eax, welcomep
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mov [prompt], eax ; set up prompt to display
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mov al, [welcomep_len]
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mov [prompt_len], al
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call draw_window ; at first, draw the window
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apploop:
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mov eax, 23 ; wait here for event
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mov ebx, 20
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int 0x40
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cmp eax, 1 ; redraw request ?
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je red
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cmp eax, 2 ; key in buffer ?
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je key
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cmp eax, 3 ; button in buffer ?
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je button
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mov ebx, [comirq]
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add ebx, 16
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cmp eax, ebx
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je flush_input ; Dont want serial data yet
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jmp apploop
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red: ; redraw
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call draw_window
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jmp apploop
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key: ; key - ignore
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mov eax, 2 ; just read it
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int 0x40
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jmp apploop
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button: ; button
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mov eax, 17 ; get id
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int 0x40
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cmp ah, 1 ; close program ?
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jne noclose
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mov esi, hangupWait
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mov edi, hangupSend
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mov edx, 1000 ; Allow sendwait 10s
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call sendwait
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call disable_port
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mov eax, -1 ; close this program
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int 0x40
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jmp apploop
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noclose:
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cmp ah, 2 ; Dial Button pressed?
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jne apploop
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mov eax, conp
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mov [prompt], eax ; set up prompt to display
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mov al,[conp_len]
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mov [prompt_len], al
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call draw_window
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jmp dialloop ; connect to the host
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; Data received, so get it, and throw it away at this point
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flush_input:
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mov eax,42
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mov ebx, [comirq]
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int 0x40
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mov eax,11 ; This will return 0 most of the time
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int 0x40
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mov ebx, [comirq]
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add ebx, 16
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cmp eax, ebx
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je flush_input
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jmp apploop
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dialloop:
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call modem_chat ; Try chatting with the modem
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cmp eax, 1 ; Did it work? ( = 1)
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jne appdsp
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; OK, we are now connected.
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mov eax, pppOnp
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mov [prompt], eax ; set up prompt to display
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mov al,[pppOnp_len]
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mov [prompt_len], al
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call draw_window
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mov eax, 23
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mov ebx, 100
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int 0x40 ; wait for 1s to display message
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call PPPStateMachine ; This is the main code
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jmp appdsp
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;****************************************************************************
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; Function
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; PPPStateMachine
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;
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; Description
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; Handles PPP link establishment
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;
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;****************************************************************************
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PPPStateMachine:
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; Start the timer
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xor eax, eax
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call settimer
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PPPLoop:
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mov eax, 11 ; check event
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int 0x40
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cmp eax, 3
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jne PPPLred
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; button pressed
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mov eax, 17 ; get id
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int 0x40
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mov eax, hangp
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mov [prompt], eax ; set up prompt to display
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mov al,[hangp_len]
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mov [prompt_len], al
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call draw_window
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mov esi, hangupWait
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mov edi, hangupSend
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mov edx, 1000 ; Allow sendwait 10s
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call sendwait
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call disable_port
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mov eax, -1 ; close this program
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int 0x40
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jmp PPPLoop
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PPPLred:
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cmp eax, 1 ; redraw request ?
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jne PPPLoop0
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call draw_window
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jmp PPPLoop
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PPPLoop0:
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mov ebx, [comirq]
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add ebx, 16
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cmp eax, ebx
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jne ppp_002 ; check for tx to send
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; we have data in the rx buffer, get it
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mov eax, 42
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mov ebx, [comirq] ; ecx will return 0 =data read, 1 =no data
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int 0x40 ; or 2 =not irq owner
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inc dword [rxbytes]
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cmp bl, 0x7E
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jne ppp_001a
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mov eax, [rx_ptr]
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cmp eax, 0
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jz ppp_001
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mov eax, [checksum1]
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cmp eax, 0xf0b8
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jne ppp_001
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movzx eax, byte [rx_str + 3]
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mov ah, [rx_str + 2]
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mov [packet], eax
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ppp_001:
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mov eax, [extended]
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and eax, 0x7e
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mov [extended], eax
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xor eax, eax
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mov [rx_ptr], eax
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mov eax, 0xffff
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mov [checksum1], eax
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jmp ppp_003
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ppp_001a:
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cmp bl, 0x7D
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jne ppp_001b
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mov eax, [extended]
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or eax, 0x01
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mov [extended], eax
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jmp ppp_003
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ppp_001b:
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mov eax, [extended]
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test eax, 0x01
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jz ppp_001c
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xor bl, 0x20
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and eax, 0xFE
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mov [extended], eax
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ppp_001c:
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mov edx, [rx_ptr]
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cmp edx, 0
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jnz ppp_001d
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cmp bl, 0xff
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je ppp_001d
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mov [rx_str + edx], byte 0xff
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inc edx
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ppp_001d:
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cmp edx, 1
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jnz ppp_001e
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cmp bl, 0x03
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je ppp_001e
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mov [rx_str + edx], byte 0x03
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inc edx
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ppp_001e:
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cmp edx, 2
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jnz ppp_001f
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test bl, 0x01
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jz ppp_001f
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mov [rx_str + edx], byte 0
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inc edx
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ppp_001f:
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mov [rx_str + edx], bl
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inc edx
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mov [rx_ptr], edx
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cmp edx, MaxRx
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jle ppp_001g
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mov edx, MaxRx
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mov [rx_ptr], edx
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ppp_001g:
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; do checksum calc
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mov eax, [checksum1]
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xor bh, bh
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xor ax, bx
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call calc
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mov ebx, [checksum1]
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and ebx, 0xffff
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shr ebx, 8
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xor eax, ebx
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mov [checksum1], eax
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jmp ppp_003
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ppp_002:
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mov eax, [tx_end]
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cmp eax, 0
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jz ppp_003
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mov ebx, [tx_ptr]
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mov cl, [tx_str + ebx]
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cmp ebx, eax
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jne ppp_002a
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mov [tx_end], dword 0
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mov cl, '~'
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jmp ppp_002d
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ppp_002a:
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mov eax, [extended]
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and eax, 0x02
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jz ppp_002b
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xor cl, 0x20
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mov eax, [extended]
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and eax, 0xFD
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mov [extended], eax
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inc [tx_ptr]
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jmp ppp_002d
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ppp_002b:
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cmp cl, 0x20
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jl ppp_002b1
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cmp cl, 0x7d
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je ppp_002b1
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cmp cl, 0x7e
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je ppp_002b1
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jmp ppp_002c
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ppp_002b1:
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mov eax, [extended]
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or eax, 0x02
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mov [extended], eax
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mov cl, 0x7d
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jmp ppp_002d
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ppp_002c:
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mov eax, [tx_ptr]
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cmp eax, 0
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jnz ppp_002c1
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mov cl, '~'
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ppp_002c1:
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inc [tx_ptr]
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ppp_002d:
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; Test for tx ready.
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push ecx
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wait_txd2:
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mov eax,43
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mov ecx, [comport]
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add ecx, 0x80000000 + 5
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int 0x40
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and bl, 0x40
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cmp bl, 0
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jz wait_txd2 ; loop until free
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pop ebx
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; send the character
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inc dword [txbytes]
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mov ecx, [comport]
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mov eax, 43
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int 0x40
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ppp_003:
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mov eax, [packet]
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cmp eax, LCP
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jne ppp_004
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mov al, [rx_str + 4]
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cmp al, REQ
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jne ppp_003b
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; Debugging output to debug board
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pusha
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mov esi, RX_LCP_REQ
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call debug_output
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popa
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mov eax, [state]
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and eax, 0xfd
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mov [state], eax
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mov ebx, 0xc6
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push eax
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call TestOptions
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pop eax
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cmp edx, 0
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jz ppp_003g
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cmp edx, 1
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jle ppp_003h
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mov edx, PPP_ACK
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cmp eax, 3
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jge ppp_003i
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or eax, 0x02
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mov [state], eax
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jmp ppp_003i
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ppp_003h:
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mov bl, 0xc0
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mov [rx_str + 10], bl
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mov edx, PPP_NAK
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jmp ppp_003i
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ppp_003g:
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mov edx, REJ
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ppp_003i:
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mov ebx, LCP
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mov ecx, edx
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movzx edx, byte [rx_str + 5]
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mov esi, rx_str + 7
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call MakePacket
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mov eax, 0
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call settimer
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jmp ppp_003a
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ppp_003b:
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cmp al, PPP_ACK
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jne ppp_003c
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; Debugging output to debug board
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pusha
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mov esi, RX_LCP_ACK
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call debug_output
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popa
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mov eax, [number]
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cmp al, [rx_str+5]
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jne ppp_003a
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mov eax, [state]
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cmp eax, 3
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jge ppp_003a
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or eax, 0x01
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mov [state], eax
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jmp ppp_003a
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ppp_003c:
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cmp al, PPP_NAK
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jne ppp_003d
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; Debugging output to debug board
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pusha
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mov esi, RX_LCP_NAK
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call debug_output
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popa
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mov eax, [state]
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and eax, 0xfe
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mov [state], eax
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jmp ppp_003a
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ppp_003d:
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cmp al, REJ
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jne ppp_003e
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; Debugging output to debug board
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pusha
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mov esi, RX_LCP_REJ
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call debug_output
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popa
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mov eax, [state]
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and eax, 0xfe
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mov [state], eax
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jmp ppp_003a
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ppp_003e:
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cmp al, TERM
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jne ppp_003j
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jmp ppp_003a
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ppp_003j:
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cmp al, LCP_ECHO_REQ
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jne ppp_003a
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; Debugging output to debug board
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pusha
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mov esi, RX_LCP_ECHO_REQ
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call debug_output
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popa
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mov al, 0
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mov [rx_str+8],al
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mov [rx_str+9],al
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mov [rx_str+10],al
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mov [rx_str+11],al
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mov ebx, LCP
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mov ecx, LCP_ECHO_REP
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movzx edx, byte [rx_str + 5]
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mov esi, rx_str + 7
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call MakePacket
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ppp_003a:
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mov eax, [state]
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cmp eax, 3
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jne ppp_013
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mov eax, 4
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mov [state], eax
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jmp ppp_013
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ppp_004:
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cmp eax, PAP
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jne ppp_005
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mov al, [rx_str + 4]
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cmp al, PPP_ACK
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jne ppp_013
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; Debugging output to debug board
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pusha
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mov esi, RX_PAP_ACK
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call debug_output
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popa
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mov eax, 5
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mov [state],eax
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jmp ppp_013
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ppp_005:
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cmp eax, IPCP
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jne ppp_006
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mov al, [rx_str + 4]
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cmp al, REQ
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jne ppp_005a
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; Debugging output to debug board
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pusha
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mov esi, RX_IPCP_REQ
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call debug_output
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popa
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mov ebx, 0x04
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call TestOptions
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cmp edx, 0
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jz ppp_005b
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mov ecx, PPP_ACK
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mov eax, 6
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mov [state], eax
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jmp ppp_005c
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ppp_005b:
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mov ecx, REJ
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ppp_005c:
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mov ebx, IPCP
|
|
movzx edx, byte [rx_str + 5]
|
|
mov esi, rx_str + 7
|
|
call MakePacket
|
|
jmp ppp_013
|
|
|
|
ppp_005a:
|
|
cmp al, PPP_ACK
|
|
jne ppp_005d
|
|
|
|
; Debugging output to debug board
|
|
pusha
|
|
mov esi, RX_IPCP_ACK
|
|
call debug_output
|
|
popa
|
|
|
|
mov al, [rx_str + 5]
|
|
mov ecx, [number]
|
|
cmp al, cl
|
|
jne ppp_013
|
|
|
|
mov eax, 7
|
|
mov [state], eax
|
|
mov eax, 5800
|
|
call settimer
|
|
|
|
mov eax, IPOnp
|
|
mov [prompt], eax ; set up prompt to display
|
|
mov al,[IPOnp_len]
|
|
mov [prompt_len], al
|
|
call draw_window
|
|
|
|
jmp ppp_013
|
|
|
|
ppp_005d:
|
|
cmp al, PPP_NAK
|
|
jne ppp_005e
|
|
|
|
; Debugging output to debug board
|
|
pusha
|
|
mov esi, RX_IPCP_NAK
|
|
call debug_output
|
|
popa
|
|
|
|
mov al, [rx_str + 10]
|
|
mov [addr1], al
|
|
mov al, [rx_str + 11]
|
|
mov [addr2], al
|
|
mov al, [rx_str + 12]
|
|
mov [addr3], al
|
|
mov al, [rx_str + 13]
|
|
mov [addr4], al
|
|
|
|
pusha
|
|
call draw_window
|
|
|
|
mov eax,52
|
|
mov ebx,3
|
|
mov cl, [addr4]
|
|
shl ecx, 8
|
|
mov cl, [addr3]
|
|
shl ecx, 8
|
|
mov cl, [addr2]
|
|
shl ecx, 8
|
|
mov cl, [addr1]
|
|
int 0x40 ; Set the stacks IP address
|
|
|
|
popa
|
|
|
|
mov ebx, IPCP ;; added 28/4/03
|
|
mov ecx, REQ
|
|
movzx edx, byte [rx_str + 5]
|
|
mov esi, rx_str + 7
|
|
call MakePacket
|
|
jmp ppp_013
|
|
|
|
ppp_005e:
|
|
cmp al, REJ
|
|
jne ppp_005f
|
|
jmp ppp_013
|
|
|
|
ppp_005f:
|
|
cmp al, TERM
|
|
jne ppp_013
|
|
jmp ppp_013
|
|
|
|
ppp_006:
|
|
cmp eax, IP
|
|
jne ppp_007
|
|
|
|
|
|
;;
|
|
;;
|
|
;;
|
|
;; This is where we will pass the IP packet up to the stack
|
|
;;
|
|
;;
|
|
;;
|
|
mov eax, 52
|
|
mov ebx, 6
|
|
mov edx, 1500 ; this should be exact amount
|
|
mov esi, rx_str + 4
|
|
int 0x40
|
|
|
|
; Debugging output to debug board
|
|
pusha
|
|
mov esi, RX_IP
|
|
call debug_output
|
|
popa
|
|
|
|
jmp ppp_013
|
|
|
|
ppp_007:
|
|
cmp eax, CCP
|
|
jne ppp_008
|
|
|
|
mov al, [rx_str + 4]
|
|
cmp al, REQ
|
|
jne ppp_013
|
|
|
|
; Debugging output to debug board
|
|
pusha
|
|
mov esi, RX_CCP_REQ
|
|
call debug_output
|
|
popa
|
|
|
|
mov ebx, 0x04
|
|
call TestOptions
|
|
cmp edx, 0
|
|
jz ppp_007b
|
|
mov ecx, PPP_ACK
|
|
jmp ppp_007c
|
|
ppp_007b:
|
|
mov ecx, REJ
|
|
|
|
ppp_007c:
|
|
mov ebx, CCP
|
|
movzx edx, byte [rx_str + 5]
|
|
mov esi, rx_str + 7
|
|
call MakePacket
|
|
|
|
jmp ppp_013
|
|
|
|
ppp_008:
|
|
cmp eax, 0
|
|
jz ppp_009
|
|
|
|
jmp ppp_013
|
|
|
|
ppp_009:
|
|
mov eax, [tx_end]
|
|
cmp eax, 0
|
|
jnz ppp_010
|
|
call gettimer
|
|
cmp eax, 100
|
|
jle ppp_010
|
|
|
|
mov eax, [state]
|
|
cmp eax, 0
|
|
je ppp_009a
|
|
cmp eax, 2
|
|
jne ppp_010
|
|
|
|
ppp_009a:
|
|
|
|
; Debugging output to debug board
|
|
pusha
|
|
mov esi, TX_LCP_REQ
|
|
call debug_output
|
|
popa
|
|
|
|
inc [number]
|
|
mov eax, 0
|
|
call settimer
|
|
|
|
mov ebx, LCP
|
|
mov ecx, REQ
|
|
mov edx, [number]
|
|
mov esi, LCPREQStr
|
|
call MakePacket
|
|
|
|
jmp ppp_013
|
|
|
|
ppp_010:
|
|
mov eax, [tx_end]
|
|
cmp eax, 0
|
|
jnz ppp_011
|
|
call gettimer
|
|
cmp eax, 100
|
|
jle ppp_011
|
|
mov eax, [state]
|
|
cmp eax, 4
|
|
jne ppp_011
|
|
mov eax, 0
|
|
call settimer
|
|
inc [number]
|
|
|
|
; Debugging output to debug board
|
|
pusha
|
|
mov esi, TX_PAP_REQ
|
|
call debug_output
|
|
popa
|
|
|
|
mov ebx, PAP
|
|
mov ecx, REQ
|
|
mov edx, [number]
|
|
mov esi, PAPREQStr
|
|
call MakePacket
|
|
|
|
jmp ppp_013
|
|
|
|
ppp_011:
|
|
mov eax, [tx_end]
|
|
cmp eax, 0
|
|
jnz ppp_012
|
|
call gettimer
|
|
cmp eax, 100
|
|
jle ppp_012
|
|
mov eax, [state]
|
|
cmp eax, 6
|
|
jne ppp_012
|
|
inc [number]
|
|
mov eax, 0
|
|
call settimer
|
|
|
|
; Debugging output to debug board
|
|
pusha
|
|
mov esi, TX_IPCP_REQ
|
|
call debug_output
|
|
popa
|
|
|
|
mov ebx, IPCP
|
|
mov ecx, REQ
|
|
mov edx, [number]
|
|
mov esi, IPCPREQStr
|
|
call MakePacket
|
|
|
|
jmp ppp_013
|
|
|
|
ppp_012:
|
|
mov eax, [tx_end]
|
|
cmp eax, 0
|
|
jnz ppp_013
|
|
mov eax, [state]
|
|
cmp eax, 7
|
|
jne ppp_013
|
|
|
|
; 10ms Delay suggested by Ville
|
|
mov eax,23 ; over here
|
|
mov ebx,1
|
|
int 0x40
|
|
|
|
|
|
|
|
call gettimer
|
|
cmp eax, 200
|
|
jle ppp_012a
|
|
|
|
; every 2s, when things are quiet, redraw window
|
|
call draw_window_limited
|
|
|
|
mov eax, 0
|
|
call settimer
|
|
|
|
ppp_012a:
|
|
|
|
mov eax, 52
|
|
mov ebx, 8
|
|
mov esi, ip_buff
|
|
int 0x40
|
|
|
|
cmp eax, 0
|
|
je ppp_013
|
|
|
|
call MakeIPPacket
|
|
|
|
; Debugging output to debug board
|
|
pusha
|
|
mov esi, TX_IP
|
|
call debug_output
|
|
popa
|
|
|
|
ppp_013:
|
|
mov eax, [packet]
|
|
cmp eax, 0
|
|
jz PPPLoop
|
|
|
|
mov eax, 0
|
|
mov [packet], eax
|
|
|
|
mov edi, rx_str
|
|
mov ecx, MaxRx + 1
|
|
rep stosb
|
|
jmp PPPLoop
|
|
|
|
|
|
|
|
;****************************************************************************
|
|
; Function
|
|
; calc
|
|
;
|
|
; Description
|
|
; Adds a character to the CRC checksum
|
|
; byte in lsb of eax
|
|
;
|
|
;
|
|
;****************************************************************************
|
|
calc:
|
|
and eax, 0xFF
|
|
push ecx
|
|
mov ecx, 8
|
|
calc_001:
|
|
test al, 0x01
|
|
jz calc_002
|
|
shr eax, 1
|
|
xor eax, 0x8408
|
|
and eax, 0xffff
|
|
jmp calc_003
|
|
calc_002:
|
|
shr eax, 1
|
|
calc_003:
|
|
loop calc_001
|
|
pop ecx
|
|
ret
|
|
|
|
|
|
;****************************************************************************
|
|
; Function
|
|
; add2tx
|
|
;
|
|
; Description
|
|
; Adds a character into the tx buffer
|
|
; byte in low byte of eax
|
|
;
|
|
;
|
|
;****************************************************************************
|
|
add2tx:
|
|
pusha
|
|
mov esi, tx_str
|
|
add esi, [tx_ptr]
|
|
inc [tx_ptr]
|
|
mov [esi], al ; Save byte in buffer
|
|
mov ecx, [checksum2]
|
|
and eax, 0xff
|
|
xor eax, ecx
|
|
call calc
|
|
shr ecx, 8
|
|
and ecx, 0xff
|
|
xor eax, ecx
|
|
mov [checksum2], eax
|
|
popa
|
|
ret
|
|
|
|
|
|
|
|
;****************************************************************************
|
|
; Function
|
|
; MakeIPPacket
|
|
;
|
|
; Description
|
|
; Creates a PPP packet for transmission to the host from the
|
|
; IP packet extracted from the stack
|
|
;
|
|
; IP data is in ip_buff
|
|
;
|
|
;****************************************************************************
|
|
MakeIPPacket:
|
|
mov [tx_ptr], dword 1
|
|
mov edi, tx_str
|
|
mov [edi], byte ' '
|
|
mov eax, 0xffff
|
|
mov [checksum2], eax
|
|
mov al, 0xff
|
|
call add2tx
|
|
mov al, 3
|
|
call add2tx
|
|
mov al, IP / 256
|
|
call add2tx
|
|
mov al, IP
|
|
call add2tx
|
|
|
|
movzx ecx, byte [ip_buff + 3]
|
|
mov ch, byte [ip_buff + 2]
|
|
|
|
mov esi, ip_buff
|
|
|
|
mip001:
|
|
mov al, byte [esi]
|
|
call add2tx
|
|
inc esi
|
|
loop mip001
|
|
|
|
mov eax, [checksum2]
|
|
not eax
|
|
call add2tx
|
|
shr eax, 8
|
|
call add2tx
|
|
|
|
mov eax, [tx_ptr]
|
|
mov [tx_end], eax
|
|
xor eax, eax
|
|
mov [tx_ptr], eax
|
|
ret
|
|
|
|
|
|
;****************************************************************************
|
|
; Function
|
|
; MakePacket
|
|
;
|
|
; Description
|
|
; Creates a PPP packet for transmission to the host
|
|
;
|
|
; Packet type in ebx
|
|
; Code is in ecx
|
|
; num is in edx
|
|
; str is pointed to by esi
|
|
;
|
|
;****************************************************************************
|
|
MakePacket:
|
|
mov [tx_ptr], dword 1
|
|
mov edi, tx_str
|
|
mov [edi], byte ' '
|
|
mov eax, 0xffff
|
|
mov [checksum2], eax
|
|
mov al, 0xff
|
|
call add2tx
|
|
mov al, 3
|
|
call add2tx
|
|
mov al, bh ; packet/256
|
|
call add2tx
|
|
mov al, bl ; packet&255
|
|
call add2tx
|
|
|
|
cmp ebx, IP ; is packet type IP?
|
|
jne mp_001 ; No - its a lower layer packet
|
|
|
|
; Do IP packet assembly
|
|
|
|
jmp mp_002
|
|
|
|
mp_001:
|
|
; Do PPP layer packet assembly
|
|
mov al, cl
|
|
call add2tx
|
|
mov al, dl
|
|
call add2tx
|
|
mov al, 0
|
|
call add2tx
|
|
|
|
movzx ecx, byte [esi] ; length = *str - 3
|
|
sub ecx, 3
|
|
|
|
mp_002: ; Now copy the data acros
|
|
mov al, byte [esi]
|
|
call add2tx
|
|
inc esi
|
|
loop mp_002
|
|
|
|
mov eax, [checksum2]
|
|
not eax
|
|
call add2tx
|
|
shr eax, 8
|
|
call add2tx
|
|
|
|
mov eax, [tx_ptr]
|
|
mov [tx_end], eax
|
|
xor eax, eax
|
|
mov [tx_ptr], eax
|
|
ret
|
|
|
|
|
|
;****************************************************************************
|
|
; Function
|
|
; TestOptions
|
|
;
|
|
; Description
|
|
; Test a PPP packets options fields for valid entries
|
|
;
|
|
; option ebx
|
|
;
|
|
; Returns result in edx, but may also modify rx_str
|
|
;
|
|
;****************************************************************************
|
|
TestOptions:
|
|
mov esi, 8 ; ptr1
|
|
mov edi, 8 ; ptr2
|
|
mov edx, 3 ; edx is the return value
|
|
movzx ecx, byte [rx_str + 7]
|
|
add ecx, 4 ; ecx is size
|
|
cmp ecx, MaxRx
|
|
jle to_001
|
|
mov ecx, MaxRx
|
|
to_001:
|
|
cmp esi, ecx
|
|
jge to_002
|
|
mov al, byte [esi + rx_str]
|
|
cmp al, 3
|
|
jne to_001a
|
|
mov al, byte [esi + rx_str + 2]
|
|
cmp al, 0x80
|
|
je to_001a
|
|
; bug fix for chap authenticate reject below
|
|
mov al, byte [esi + rx_str + 2]
|
|
cmp al, 0xc2
|
|
jne to_001a
|
|
and edx, 0xfd
|
|
to_001a:
|
|
push ecx
|
|
mov cl, [esi + rx_str]
|
|
dec cl
|
|
mov eax, 1
|
|
shl eax, cl
|
|
and eax, ebx
|
|
and eax, 0xffff
|
|
pop ecx
|
|
cmp eax, 0
|
|
jnz to_001b
|
|
xor edx,edx
|
|
to_001b:
|
|
movzx eax, byte [esi+rx_str+1]
|
|
add esi, eax
|
|
jmp to_001
|
|
to_002:
|
|
; if (!(pass&2))...
|
|
test edx, 2
|
|
jnz to_exit
|
|
test edx, 1
|
|
jz to_002a
|
|
mov ebx, 0xFFFB
|
|
to_002a:
|
|
mov esi, 8
|
|
to_002b: ; for loop
|
|
cmp esi, ecx
|
|
jge to_003
|
|
|
|
push ecx
|
|
mov cl, [esi + rx_str]
|
|
dec cl
|
|
mov eax, 1
|
|
shl eax, cl
|
|
and eax, ebx
|
|
and eax, 0xffff
|
|
pop ecx
|
|
cmp eax, 0
|
|
jnz to_002c
|
|
movzx edx, byte [esi+rx_str+1]
|
|
to_002d:
|
|
cmp esi, ecx
|
|
jge to_002b
|
|
cmp edx, 0
|
|
jz to_002b
|
|
mov al, [esi + rx_str]
|
|
mov [edi + rx_str], al
|
|
inc esi
|
|
inc edi
|
|
dec edx
|
|
jmp to_002d
|
|
to_002c:
|
|
movzx eax, byte [esi+rx_str+1]
|
|
add esi, eax
|
|
jmp to_002b ; end of for loop
|
|
to_003:
|
|
mov eax, edi
|
|
sub al, 4
|
|
mov [rx_str+7], al
|
|
xor edx, edx
|
|
cmp ebx, 0xfffb
|
|
jne to_exit
|
|
inc edx
|
|
to_exit:
|
|
; Return value in EDX
|
|
ret
|
|
|
|
|
|
|
|
;***************************************************************************
|
|
; Function
|
|
; disable_port
|
|
;
|
|
; Description;
|
|
; Releases this applications use of the com port
|
|
;
|
|
;***************************************************************************
|
|
disable_port:
|
|
if DEBUG_PORT2_OUTPUT = TRUE
|
|
mov eax, 46 ; free port area
|
|
mov ebx, 1
|
|
|
|
mov ecx, 0x2f8
|
|
and ecx, 0xFF0
|
|
mov edx, ecx
|
|
or edx, 0x00F
|
|
int 0x40
|
|
end if
|
|
|
|
mov eax, 45 ; free irq 4
|
|
mov ebx, 1
|
|
mov ecx, [comirq]
|
|
int 0x40
|
|
|
|
mov eax, 46 ; free port area
|
|
mov ebx, 1
|
|
|
|
mov ecx, [comport]
|
|
and ecx, 0xFF0
|
|
mov edx, ecx
|
|
or edx, 0x00F
|
|
int 0x40
|
|
ret
|
|
|
|
|
|
|
|
;***************************************************************************
|
|
; Function
|
|
; enable_port
|
|
;
|
|
; Description;
|
|
; Takes control of the com port, defining the IRQ table and initialising
|
|
; the uart chip.
|
|
;
|
|
;***************************************************************************
|
|
enable_port:
|
|
pusha
|
|
if DEBUG_PORT2_OUTPUT = TRUE
|
|
mov eax, 46
|
|
mov ebx, 0
|
|
mov ecx, 0x2f8
|
|
and ecx, 0xFF0
|
|
mov edx, ecx
|
|
or edx, 0x00F
|
|
int 0x40 ; reseve port memory to this process
|
|
|
|
mov eax, 45 ; reserve irq 3
|
|
mov ebx, 0
|
|
mov ecx, 3
|
|
int 0x40
|
|
|
|
|
|
mov ecx, 0x2f8 ; data format register
|
|
add ecx, 3
|
|
mov bl, 0x80 ; enable access to divisor latch
|
|
mov eax, 43 ; send data to device - com port setup
|
|
int 0x40
|
|
|
|
mov ecx, 0x2f8 ; interrupt enable register
|
|
inc ecx
|
|
mov bl, 0 ; No interruts enabled
|
|
mov eax, 43 ; send data to device (modem)
|
|
int 0x40
|
|
|
|
mov ecx, 0x2f8 ; Divisor latch LSB
|
|
mov bl, BAUDRATE ; set baud rate
|
|
mov eax, 43 ; send data to device (modem)
|
|
int 0x40
|
|
|
|
mov ecx, 0x2f8 ; Data format register
|
|
add ecx, 3
|
|
mov bl, 3 ; 8 data bits
|
|
mov eax, 43 ; send data to device (modem)
|
|
int 0x40
|
|
|
|
mov ecx, 0x2f8 ; Modem control register
|
|
add ecx, 4 ; ** bl must be 0x0b for modem to dial!
|
|
mov bl, 0x0b ; 0x08 -> out2 enabled. No handshaking.
|
|
; 0xb -> out2 enabled, RTS/DTR enabled
|
|
mov eax, 43 ; send data to device (modem)
|
|
int 0x40
|
|
|
|
; mov ecx, 0x2f8 ; interrupt enable register
|
|
; inc ecx
|
|
; mov bl, 1 ; rx data interrupt enabled, othrs not
|
|
; mov eax, 43 ; send data to device (modem)
|
|
; int 0x40
|
|
|
|
end if
|
|
|
|
mov eax, 46
|
|
mov ebx, 0
|
|
mov ecx, [comport]
|
|
and ecx, 0xFF0
|
|
mov edx, ecx
|
|
or edx, 0x00F
|
|
int 0x40 ; reseve port memory to this process
|
|
|
|
mov eax, 45 ; reserve irq 4
|
|
mov ebx, 0
|
|
mov ecx, [comirq]
|
|
int 0x40
|
|
|
|
mov eax, 44 ; setup irq table
|
|
mov ebx, irqtable
|
|
mov ecx, [comirq]
|
|
int 0x40
|
|
|
|
mov ecx, [comport] ; data format register
|
|
add ecx, 3
|
|
mov bl, 0x80 ; enable access to divisor latch
|
|
mov eax, 43 ; send data to device - com port setup
|
|
int 0x40
|
|
|
|
mov ecx, [comport] ; interrupt enable register
|
|
inc ecx
|
|
mov bl, 0 ; No interruts enabled
|
|
mov eax, 43 ; send data to device (modem)
|
|
int 0x40
|
|
|
|
mov ecx, [comport] ; Divisor latch LSB
|
|
mov bl, BAUDRATE ; set baud rate
|
|
mov eax, 43 ; send data to device (modem)
|
|
int 0x40
|
|
|
|
mov ecx, [comport] ; Data format register
|
|
add ecx, 3
|
|
mov bl, 3 ; 8 data bits
|
|
mov eax, 43 ; send data to device (modem)
|
|
int 0x40
|
|
|
|
mov ecx, [comport] ; Modem control register
|
|
add ecx, 4 ; ** bl must be 0x0b for modem to dial!
|
|
mov bl, 0x0b ; 0x08 -> out2 enabled. No handshaking.
|
|
; 0xb -> out2 enabled, RTS/DTR enabled
|
|
mov eax, 43 ; send data to device (modem)
|
|
int 0x40
|
|
|
|
mov ecx, [comport] ; interrupt enable register
|
|
inc ecx
|
|
mov bl, 1 ; rx data interrupt enabled, othrs not
|
|
mov eax, 43 ; send data to device (modem)
|
|
int 0x40
|
|
|
|
mov ecx, [comirq]
|
|
add ecx, 16
|
|
mov ebx, 1
|
|
shl ebx, cl
|
|
add ebx, 111b
|
|
mov eax,40 ; enable irq 4 data
|
|
int 0x40
|
|
|
|
popa
|
|
ret
|
|
|
|
|
|
|
|
;**************************************************************************
|
|
; Function
|
|
; draw_window
|
|
;
|
|
; Description;
|
|
; Normal window definition and text layout for application
|
|
;**************************************************************************
|
|
draw_window:
|
|
mov eax, 12 ; function 12:tell os about windowdraw
|
|
mov ebx, 1 ; 1, start of draw
|
|
int 0x40
|
|
; DRAW WINDOW
|
|
mov eax, 0 ; function 0 : define and draw window
|
|
mov ebx, 100*65536+250 ; [x start] *65536 + [x size]
|
|
mov ecx, 100*65536+150 ; [y start] *65536 + [y size]
|
|
mov edx,0x03224466 ; color of work area RRGGBB
|
|
mov esi,0x00334455 ; color of grab bar RRGGBB
|
|
mov edi,0x00ddeeff ; color of frames RRGGBB
|
|
int 0x40
|
|
; WINDOW LABEL
|
|
mov eax, 4 ; function 4 : write text to window
|
|
mov ebx, 8*65536+8 ; [x start] *65536 + [y start]
|
|
mov ecx, 0x00ffffff ; color of text RRGGBB
|
|
mov edx, labelt ; pointer to text beginning
|
|
mov esi, labellen-labelt ; text length
|
|
int 0x40
|
|
; DIAL BUTTON
|
|
mov eax, 8 ; function 8 : define and draw button
|
|
mov ebx, (50)*65536+40 ; [x start] *65536 + [x size]
|
|
mov ecx, 130*65536+12 ; [y start] *65536 + [y size]
|
|
mov edx, 2 ; button id
|
|
mov esi, 0x5599cc ; button color RRGGBB
|
|
int 0x40
|
|
|
|
mov ebx, 55*65536+133 ; Draw button text
|
|
mov ecx, 0x00FFFFFF
|
|
mov edx, button1_text
|
|
xor eax, eax
|
|
mov al, [button1_text_len]
|
|
mov esi, eax
|
|
mov eax, 4
|
|
int 0x40
|
|
; DISCONNECT BUTTON
|
|
mov eax, 8 ; function 8 : define and draw button
|
|
mov ebx, (150)*65536+65 ; [x start] *65536 + [x size]
|
|
mov ecx, 130*65536+12 ; [y start] *65536 + [y size]
|
|
mov edx, 3 ; button id
|
|
mov esi, 0x5599cc ; button color RRGGBB
|
|
int 0x40
|
|
|
|
mov ebx, 155*65536+133 ; Draw button text
|
|
mov ecx, 0x00FFFFFF
|
|
mov edx, button3_text
|
|
xor eax, eax
|
|
mov al, [button3_text_len]
|
|
mov esi, eax
|
|
mov eax, 4
|
|
int 0x40
|
|
|
|
mov ebx, 5*65536+40 ; draw info text with function 4
|
|
mov ecx, 0x00FFFFFF
|
|
mov edx, [prompt]
|
|
xor eax, eax
|
|
mov al, [prompt_len]
|
|
mov esi, eax
|
|
mov eax, 4
|
|
int 0x40
|
|
|
|
; Draw IP address
|
|
mov edx, 10*65536+60
|
|
mov esi, 0x00FFFFFF
|
|
mov ebx, 0x00030000
|
|
movzx ecx, byte [addr1]
|
|
mov eax, 47
|
|
int 0x40
|
|
mov edx, 31*65536+60
|
|
mov esi, 0x00FFFFFF
|
|
mov ebx, 0x00030000
|
|
movzx ecx, byte [addr2]
|
|
mov eax, 47
|
|
int 0x40
|
|
mov edx, 52*65536+60
|
|
mov esi, 0x00FFFFFF
|
|
mov ebx, 0x00030000
|
|
movzx ecx, byte [addr3]
|
|
mov eax, 47
|
|
int 0x40
|
|
mov edx, 73*65536+60
|
|
mov esi, 0x00FFFFFF
|
|
mov ebx, 0x00030000
|
|
movzx ecx, byte [addr4]
|
|
mov eax, 47
|
|
int 0x40
|
|
|
|
; Status byte
|
|
mov edx, 100*65536+60
|
|
mov esi, 0x00FFFFFF
|
|
mov ebx, 0x00010000
|
|
movzx ecx, byte [state]
|
|
mov eax, 47
|
|
int 0x40
|
|
|
|
; bytes sent / received
|
|
mov eax, 4 ; function 4 : write text to window
|
|
mov ebx, 10*65536+80 ; [x start] *65536 + [y start]
|
|
mov ecx, 0x00ffffff ; color of text RRGGBB
|
|
mov edx, txmsg ; pointer to text beginning
|
|
mov esi, txmsglen-txmsg ; text length
|
|
int 0x40
|
|
|
|
mov eax, 4 ; function 4 : write text to window
|
|
mov ebx, 10*65536+100 ; [x start] *65536 + [y start]
|
|
mov ecx, 0x00ffffff ; color of text RRGGBB
|
|
mov edx, rxmsg ; pointer to text beginning
|
|
mov esi, rxmsglen-rxmsg ; text length
|
|
int 0x40
|
|
|
|
call draw_window_limited
|
|
|
|
mov eax, 12 ; end of redraw
|
|
mov ebx, 2
|
|
int 0x40
|
|
|
|
ret
|
|
|
|
|
|
|
|
draw_window_limited:
|
|
mov eax,13
|
|
mov ebx,80*65536+10*6
|
|
mov ecx,80*65536+10
|
|
mov edx,0x03224466
|
|
int 0x40
|
|
mov eax,13
|
|
mov ebx,80*65536+10*6
|
|
mov ecx,100*65536+10
|
|
mov edx,0x03224466
|
|
int 0x40
|
|
|
|
mov ebx, 0x000A0000
|
|
mov ecx, [txbytes]
|
|
mov esi, 0x00ffffff ; color of text RRGGBB
|
|
mov eax, 47 ; function 47 : write number to window
|
|
mov edx, 80*65536+80 ; [x start] *65536 + [y start]
|
|
int 0x40
|
|
|
|
mov ebx, 0x000A0000
|
|
mov ecx, [rxbytes]
|
|
mov esi, 0x00ffffff ; color of text RRGGBB
|
|
mov eax, 47 ; function 47 : write number to window
|
|
mov edx, 80*65536+100 ; [x start] *65536 + [y start]
|
|
int 0x40
|
|
ret
|
|
|
|
|
|
;****************************************************************************
|
|
; Function
|
|
; settimer
|
|
;
|
|
; Description
|
|
; sets the general purpose timer to a given value in eax
|
|
; All times are in 1/100s
|
|
;
|
|
;
|
|
;****************************************************************************
|
|
settimer:
|
|
push eax
|
|
mov eax, 26
|
|
mov ebx, 9
|
|
int 0x40 ; get 100th second counter
|
|
pop ebx
|
|
sub eax, ebx ; This could have some funny side effecs if PPP
|
|
; called within ebx seconds of startup
|
|
mov [timerValue], eax
|
|
ret
|
|
|
|
|
|
;****************************************************************************
|
|
; Function
|
|
; gettimer
|
|
;
|
|
; Description
|
|
; gets the general purpose timer count in eax
|
|
; All times are in 1/100s
|
|
;
|
|
;
|
|
;****************************************************************************
|
|
gettimer:
|
|
mov eax, 26
|
|
mov ebx, 9
|
|
int 0x40 ; get 100th second counter
|
|
|
|
sub eax, [timerValue]
|
|
ret
|
|
|
|
|
|
|
|
|
|
;****************************************************************************
|
|
; Function
|
|
; sendwait
|
|
;
|
|
; Description
|
|
; Sends a command string to the modem, then waits for a defined rsp
|
|
;
|
|
; esi points to string to wait for
|
|
; edi points to string to send
|
|
; edx holds wait time, in ms
|
|
;
|
|
; Returns 1 if OK or 0 if timeout occurred
|
|
;
|
|
;****************************************************************************
|
|
sendwait:
|
|
mov [sendwaitTime], edx
|
|
|
|
; Shrirang 2/5/03
|
|
mov byte [abortcnt], 0 ; reset the abort counter
|
|
;--!
|
|
|
|
; Start the timer
|
|
xor eax, eax
|
|
call settimer
|
|
|
|
; Check for incoming data
|
|
|
|
xor edx, edx
|
|
xor eax, eax
|
|
|
|
sw_001:
|
|
push eax
|
|
push edx
|
|
|
|
; Has connection timer expired?
|
|
call gettimer
|
|
cmp eax, [sendwaitTime]
|
|
jl sw_000
|
|
|
|
pop edx
|
|
pop eax
|
|
|
|
xor eax, eax
|
|
|
|
jmp sw_exit ; Exit indicating an error ( timeout )
|
|
|
|
sw_000:
|
|
; any data from modem?
|
|
|
|
mov eax,11 ; This will return 0 most of the time
|
|
int 0x40
|
|
mov ecx, eax
|
|
pop edx
|
|
pop eax
|
|
|
|
|
|
cmp ecx, 1 ; redraw request ?
|
|
je red1
|
|
cmp ecx, 3 ; button in buffer ?
|
|
je button1
|
|
mov ebx, [comirq]
|
|
add ebx, 16
|
|
cmp ecx,ebx
|
|
jne sw_002
|
|
jmp sw_000a
|
|
|
|
red1:
|
|
pusha
|
|
call draw_window
|
|
popa
|
|
push eax
|
|
push edx
|
|
|
|
jmp sw_000
|
|
|
|
button1:
|
|
mov eax, 0
|
|
jmp sw_exit
|
|
|
|
sw_000a:
|
|
; there was data, so get it
|
|
|
|
push edx
|
|
push eax
|
|
mov eax,42
|
|
mov ebx, [comirq]
|
|
int 0x40
|
|
pop eax
|
|
pop edx
|
|
|
|
|
|
; Shrirang 2/5/03
|
|
; Now that the expected response is not got we check if we
|
|
; got the abort part, before we reset the fsm
|
|
|
|
cmp bl, 0x0d ; AT commands normally start and end with \r\n
|
|
je checkabort
|
|
|
|
cmp bl, 0x0a
|
|
je checkabort
|
|
|
|
push eax
|
|
xor eax, eax
|
|
mov al, [abortcnt]
|
|
mov byte [abortres+eax], bl ; update abort response
|
|
inc byte [abortcnt]
|
|
pop eax
|
|
|
|
jmp noabort
|
|
|
|
|
|
checkabort :
|
|
|
|
cmp byte [abortcnt], 2 ; if we got valid abort this cannot happen!
|
|
jbe noabortflush
|
|
|
|
push eax
|
|
push esi
|
|
push edi
|
|
push ecx
|
|
|
|
mov esi, abortres
|
|
mov edi, aborts
|
|
xor ecx, ecx
|
|
mov cl, byte [abortcnt]
|
|
call scanaborts ; scan 'em
|
|
|
|
pop ecx
|
|
pop edi
|
|
pop esi
|
|
|
|
and eax, eax
|
|
jz noabortdec
|
|
|
|
pop eax
|
|
xor eax, eax
|
|
jmp sw_exit
|
|
|
|
noabortdec:
|
|
|
|
pop eax
|
|
|
|
noabortflush:
|
|
|
|
mov byte [abortcnt], 0
|
|
|
|
noabort:
|
|
|
|
;--!
|
|
|
|
cmp [esi+edx], bl
|
|
je sw_003
|
|
|
|
|
|
xor edx, edx
|
|
|
|
; Added 28/4/03
|
|
cmp [esi+edx], bl
|
|
je sw_003
|
|
|
|
jmp sw_001
|
|
|
|
sw_003: ; They are the same
|
|
inc edx
|
|
cmp [esi+edx], byte 0
|
|
jne sw_001
|
|
|
|
|
|
xor eax, eax
|
|
inc eax
|
|
jmp sw_exit
|
|
|
|
sw_002:
|
|
; Test for data to send to modem
|
|
cmp [ edi + eax ], byte 0
|
|
je sw_001
|
|
|
|
; Is it a '|' character?
|
|
cmp [ edi + eax ], byte '|'
|
|
jne sw_004
|
|
|
|
push eax
|
|
call gettimer
|
|
cmp eax, 100
|
|
pop eax
|
|
jl sw_001
|
|
|
|
; restart the timer
|
|
push eax
|
|
xor eax, eax
|
|
call settimer
|
|
pop eax
|
|
|
|
; Move to next character
|
|
inc eax
|
|
jmp sw_001
|
|
|
|
|
|
sw_004:
|
|
push edx
|
|
push eax
|
|
|
|
; restart the timer
|
|
xor eax, eax
|
|
call settimer
|
|
|
|
; Test for tx ready.
|
|
; OR, wait then send
|
|
push edi
|
|
mov eax, 5
|
|
mov ebx, 1
|
|
int 0x40 ; 10ms delay
|
|
pop edi
|
|
|
|
; send the character
|
|
pop eax
|
|
mov bl, [edi + eax]
|
|
|
|
mov ecx, [comport]
|
|
inc eax
|
|
push eax
|
|
mov eax, 43
|
|
int 0x40
|
|
|
|
pop eax
|
|
pop edx
|
|
|
|
cmp [ edi + eax ], byte 0
|
|
jne sw_001
|
|
|
|
cmp [ esi + edx ], byte 0
|
|
jne sw_001
|
|
|
|
xor eax, eax
|
|
inc eax
|
|
|
|
sw_exit:
|
|
; return success (1) or failure (0) in eax
|
|
ret
|
|
|
|
|
|
|
|
|
|
if DEBUG_OUTPUT = TRUE
|
|
|
|
;****************************************************************************
|
|
; Function
|
|
; debug_output
|
|
;
|
|
; Description
|
|
; prints a description of the PPP protocol's data exchanges to the
|
|
; debug board
|
|
;
|
|
; esi holds ptr to msg to display
|
|
;
|
|
; Nothing preserved; I'm assuming a pusha/popa is done before calling
|
|
;
|
|
;****************************************************************************
|
|
debug_output:
|
|
cmp esi, RX_IP
|
|
jne do_001
|
|
|
|
call debug_print_string
|
|
|
|
call debug_print_rx_ip
|
|
|
|
mov esi, IP_DATA1
|
|
call debug_print_string
|
|
mov esi, CRLF
|
|
call debug_print_string
|
|
mov esi, IP_DATA2
|
|
call debug_print_string
|
|
ret
|
|
|
|
do_001:
|
|
cmp esi, TX_IP
|
|
jne do_002
|
|
|
|
call debug_print_string
|
|
|
|
call debug_print_tx_ip
|
|
|
|
mov esi, IP_DATA1
|
|
call debug_print_string
|
|
mov esi, CRLF
|
|
call debug_print_string
|
|
mov esi, IP_DATA2
|
|
call debug_print_string
|
|
ret
|
|
|
|
do_002:
|
|
; Print PPP protocol information
|
|
if DEBUG_PPP_OUTPUT = TRUE
|
|
call debug_print_string
|
|
mov esi, CRLF
|
|
call debug_print_string
|
|
end if
|
|
ret
|
|
|
|
|
|
|
|
txCom2:
|
|
push ecx
|
|
|
|
wait_txd2t:
|
|
mov eax,43
|
|
mov ecx,0x80000000 + 0x2f8 + 5
|
|
int 0x40
|
|
and bl, 0x40
|
|
cmp bl, 0
|
|
jz wait_txd2t ; loop until free
|
|
|
|
pop ebx
|
|
|
|
|
|
; send the character
|
|
|
|
mov ecx, 0x2f8
|
|
mov eax, 43
|
|
int 0x40
|
|
ret
|
|
|
|
|
|
;****************************************************************************
|
|
; Function
|
|
; debug_print_string
|
|
;
|
|
; Description
|
|
; prints a string to the debug board
|
|
;
|
|
; esi holds ptr to msg to display
|
|
;
|
|
; Nothing preserved; I'm assuming a pusha/popa is done before calling
|
|
;
|
|
;****************************************************************************
|
|
debug_print_string:
|
|
mov cl, [esi]
|
|
cmp cl, 0
|
|
jnz dps_001
|
|
ret
|
|
|
|
dps_001:
|
|
if DEBUG_PORT2_OUTPUT = TRUE
|
|
pusha
|
|
call txCom2
|
|
popa
|
|
end if
|
|
mov eax,63
|
|
mov ebx, 1
|
|
push esi
|
|
int 0x40
|
|
pop esi
|
|
inc esi
|
|
jmp debug_print_string
|
|
|
|
|
|
; This is used for translating hex to ASCII for display or output
|
|
hexchars db '0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'
|
|
|
|
IP_DATA1 db 'TCP From: xxxxxxxx To: xxxxxxxx SrcP: xxxx DestP: xxxx',0
|
|
IP_DATA2 db 'Seq: xxxxxxxx Ack: xxxxxxxx Flags: xx dataLen: xxxx',13,10,0
|
|
|
|
|
|
|
|
debug_print_rx_ip:
|
|
mov esi, rx_str + 4 ; The ip buffer address start
|
|
|
|
mov edi, IP_DATA1
|
|
|
|
cmp [esi+9], byte 1
|
|
jne rnICMP
|
|
mov eax,'ICMP'
|
|
jmp drp
|
|
rnICMP:
|
|
cmp [esi+9], byte 6
|
|
jne rnTCP
|
|
mov eax,'TCP '
|
|
jmp drp
|
|
rnTCP:
|
|
cmp [esi+9], byte 17
|
|
jne rnUDP
|
|
mov eax,'UDP '
|
|
jmp drp
|
|
rnUDP:
|
|
|
|
drp:
|
|
mov [edi], eax
|
|
|
|
call fillData
|
|
|
|
ret
|
|
|
|
|
|
debug_print_tx_ip:
|
|
mov esi, ip_buff ; The ip buffer address start
|
|
|
|
mov edi, IP_DATA1
|
|
|
|
cmp [esi+9], byte 1
|
|
jne tnICMP
|
|
mov eax,'ICMP'
|
|
jmp dtp
|
|
tnICMP:
|
|
cmp [esi+9], byte 6
|
|
jne tnTCP
|
|
mov eax,'TCP '
|
|
jmp dtp
|
|
tnTCP:
|
|
cmp [esi+9], byte 17
|
|
jne tnUDP
|
|
mov eax,'UDP '
|
|
jmp dtp
|
|
tnUDP:
|
|
|
|
dtp:
|
|
mov [edi], eax
|
|
|
|
call fillData
|
|
|
|
ret
|
|
|
|
|
|
fillData:
|
|
; Display from IP
|
|
mov cl, [esi+12]
|
|
mov edx, 11
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
mov cl, [esi+13]
|
|
mov edx, 13
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
mov cl, [esi+14]
|
|
mov edx, 15
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
mov cl, [esi+15]
|
|
mov edx, 17
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
|
|
; Display to IP
|
|
mov cl, [esi+16]
|
|
mov edx, 24
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
mov cl, [esi+17]
|
|
mov edx, 26
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
mov cl, [esi+18]
|
|
mov edx, 28
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
mov cl, [esi+19]
|
|
mov edx, 30
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
|
|
; Only display extra data for TCP
|
|
cmp [esi+9], byte 6 ; TCP?
|
|
je nTCP
|
|
|
|
; display source port
|
|
mov [edi+32], byte 0
|
|
mov edi, IP_DATA2
|
|
mov [edi], byte 0
|
|
ret
|
|
|
|
nTCP:
|
|
mov [edi+32], byte ' '
|
|
|
|
mov cl, [esi+20]
|
|
mov edx, 39
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
mov cl, [esi+21]
|
|
mov edx, 41
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
|
|
mov cl, [esi+22]
|
|
mov edx, 51
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
mov cl, [esi+23]
|
|
mov edx, 53
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
|
|
|
|
mov edi, IP_DATA2
|
|
mov [edi], byte 'S'
|
|
|
|
mov cl, [esi+24]
|
|
mov edx, 5
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
mov cl, [esi+25]
|
|
mov edx, 7
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
mov cl, [esi+26]
|
|
mov edx, 9
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
mov cl, [esi+27]
|
|
mov edx, 11
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
|
|
mov cl, [esi+28]
|
|
mov edx, 19
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
mov cl, [esi+29]
|
|
mov edx, 21
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
mov cl, [esi+30]
|
|
mov edx, 23
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
mov cl, [esi+31]
|
|
mov edx, 25
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
|
|
mov cl, [esi+33]
|
|
and cl, 0x3F
|
|
mov edx, 35
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
|
|
; Display the size of the received packet
|
|
mov dh, [esi + 2]
|
|
mov dl, [esi + 3]
|
|
sub dx, 40
|
|
mov cl, dh
|
|
mov edx, 48
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
mov dh, [esi + 2]
|
|
mov dl, [esi + 3]
|
|
sub dx, 40
|
|
mov cl, dl
|
|
mov edx, 50
|
|
call wbyte ; byte in cl, dest in edi+edx
|
|
|
|
|
|
ret
|
|
|
|
|
|
wbyte: ; byte in cl, dest in edi+edx, edi unchanged
|
|
xor eax, eax
|
|
mov al, cl
|
|
shr al, 4
|
|
mov bl, [eax + hexchars]
|
|
mov [edi+edx], bl
|
|
inc edx
|
|
mov al, cl
|
|
and al, 0x0f
|
|
mov bl, [eax + hexchars]
|
|
mov [edi+edx], bl
|
|
ret
|
|
|
|
else
|
|
debug_output:
|
|
ret
|
|
end if
|
|
|
|
; DATA AREA
|
|
|
|
|
|
; debug msgs
|
|
RX_IP db 'R: ',0
|
|
TX_IP db 'T: ',0
|
|
CRLF db 13,10,0
|
|
RX_LCP_REQ db 'RX_LCP_REQ',0
|
|
RX_LCP_ACK db 'RX_LCP_ACK',0
|
|
RX_LCP_NAK db 'RX_LCP_NAK',0
|
|
RX_LCP_REJ db 'RX_LCP_REJ',0
|
|
RX_LCP_ECHO_REQ db 'RX_LCP_ECHO_REQ',0
|
|
RX_PAP_ACK db 'RX_PAP_ACK',0
|
|
RX_IPCP_REQ db 'RX_IPCP_REQ',0
|
|
RX_IPCP_ACK db 'RX_IPCP_ACK',0
|
|
RX_IPCP_NAK db 'RX_IPCP_NAK ( IP Address assigned )',0
|
|
RX_CCP_REQ db 'RX_CCP_REQ',0
|
|
TX_LCP_REQ db 'TX_LCP_REQ',0
|
|
TX_PAP_REQ db 'TX_PAP_REQ',0
|
|
TX_IPCP_REQ db 'TX_IPCP_REQ',0
|
|
|
|
|
|
; Labels for GUI buttons
|
|
button1_text db 'DIAL'
|
|
button1_text_len db 4
|
|
button3_text db 'DISCONNECT'
|
|
button3_text_len db 10
|
|
|
|
comport dd 0
|
|
comirq dd 0
|
|
|
|
; Pointer to prompt shown to user
|
|
prompt dd 0
|
|
prompt_len db 0
|
|
|
|
; Application Title
|
|
labelt db 'PPP Dialer'
|
|
labellen:
|
|
|
|
txmsg: db 'Tx bytes :'
|
|
txmsglen:
|
|
rxmsg: db 'Rx bytes :'
|
|
rxmsglen:
|
|
|
|
timerValue dd 0
|
|
sendwaitTime dd 0
|
|
|
|
|
|
; Prompts displayed to the user
|
|
welcomep db 'Select an option below, see ppp.txt'
|
|
welcomep_len db 35
|
|
|
|
dialfp db 'Connect Failed...'
|
|
dialfp_len db 17
|
|
|
|
connectedp db 'Connected to Host'
|
|
connectedp_len db 17
|
|
|
|
conp db 'Connecting to Host'
|
|
conp_len db 18
|
|
|
|
pppOnp db 'PPP Started'
|
|
pppOnp_len db 11
|
|
|
|
IPOnp db 'IP Link established'
|
|
IPOnp_len db 19
|
|
|
|
discp db 'Disconnected from Host'
|
|
discp_len db 22
|
|
|
|
hangp db 'Hanging up Modem......'
|
|
hangp_len db 22
|
|
|
|
PPPconSend db 0x7e,0xff,0x7d,0x23,0x08,0x08,0x08,0x08,0
|
|
PPPconWait db '~~',0
|
|
hangupWait db 'ATZ',0
|
|
hangupSend db '|||+++|||',10,13,'ATH',10,13,'|ATZ',10,13,0
|
|
|
|
; Shrirang 2/5/03
|
|
|
|
abortres: times(50) db 0
|
|
abortcnt db 0
|
|
|
|
;--!
|
|
|
|
LCPREQStr db 0x0e,0x02,0x06,0x00, 0x0a, 0x00, 0x00, 0x07, 0x02, 0x08, 0x02
|
|
PAPREQStr db 14, 4, 'free', 4, 'free'
|
|
IPCPREQStr db 10, 3, 6, 0, 0, 0, 0
|
|
|
|
irqtable: dd 0x3f8 + 0x01000000 ; read port 0x3f8, byte
|
|
dd 0
|
|
dd 0
|
|
dd 0
|
|
dd 0
|
|
dd 0
|
|
dd 0
|
|
dd 0
|
|
dd 0
|
|
dd 0
|
|
dd 0
|
|
dd 0
|
|
dd 0
|
|
dd 0
|
|
dd 0
|
|
dd 0
|
|
checksum1 dd 0
|
|
checksum2 dd 0
|
|
packet dd 0
|
|
state dd 0
|
|
extended dd 0
|
|
number dd 0
|
|
tx_end dd 0
|
|
tx_ptr dd 0
|
|
rx_ptr dd 0
|
|
addr1 db 0
|
|
addr2 db 0
|
|
addr3 db 0
|
|
addr4 db 0
|
|
rxbytes dd 0
|
|
txbytes dd 0
|
|
|
|
|
|
; End of application code and data marker
|
|
|
|
I_END:
|
|
|
|
rx_str: rb MaxRx + 1
|
|
tx_str: rb MaxTx + 1
|
|
ip_buff: rb 1500
|
|
|