794 lines
13 KiB
NASM
794 lines
13 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;
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; TERMINAL
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;
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; Compile with FASM for Menuet
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;
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use32
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org 0x0
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db 'MENUET01' ; header
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dd 0x01 ; header version
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dd START ; entry point
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dd I_END ; image size
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dd I_END+0x10000 ; required memory
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dd I_END+0x10000 ; esp
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dd 0x0 , 0x0 ; I_Param , I_Path
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include 'lang.inc'
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include 'macros.inc'
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START: ; start of execution
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; Clear the screen memory
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mov eax, ' '
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mov edi,text
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mov ecx,80*30 /4
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cld
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rep stosd
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call draw_window
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still:
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; check connection status
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mov eax,53
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mov ebx,6
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mov ecx,[socket]
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mcall
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mov ebx, [socket_status]
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mov [socket_status], eax
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cmp eax, ebx
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je waitev
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red:
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call draw_window
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waitev:
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mov eax,23 ; wait here for event
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mov ebx,20
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mcall
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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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; any data from the socket?
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mov eax, 53
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mov ebx, 2
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mov ecx, [socket]
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mcall
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cmp eax, 0
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jne read_input
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jmp still
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read_input:
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push ecx
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mov eax, 53
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mov ebx, 3
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mov ecx, [socket]
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mcall
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pop ecx
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call handle_data
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push ecx
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mov eax, 53
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mov ebx, 2
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mov ecx, [socket]
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mcall
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pop ecx
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cmp eax, 0
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jne read_input
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call draw_text
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jmp still
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handle_data:
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; Telnet servers will want to negotiate options about our terminal window
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; just reject them all.
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; Telnet options start with the byte 0xff and are 3 bytes long.
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mov al, [telnetstate]
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cmp al, 0
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je state0
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cmp al, 1
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je state1
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cmp al, 2
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je state2
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jmp hd001
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state0:
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cmp bl, 255
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jne hd001
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mov al, 1
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mov [telnetstate], al
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ret
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state1:
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mov al, 2
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mov [telnetstate], al
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ret
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state2:
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mov al, 0
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mov [telnetstate], al
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mov [telnetrep+2], bl
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mov edx, 3
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mov eax,53
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mov ebx,7
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mov ecx,[socket]
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mov esi, telnetrep
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mcall
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ret
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hd001:
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cmp bl,13 ; BEGINNING OF LINE
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jne nobol
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mov ecx,[pos]
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add ecx,1
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boll1:
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sub ecx,1
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mov eax,ecx
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xor edx,edx
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mov ebx,80
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div ebx
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cmp edx,0
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jne boll1
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mov [pos],ecx
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jmp newdata
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nobol:
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cmp bl,10 ; LINE DOWN
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jne nolf
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addx1:
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add [pos],dword 1
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mov eax,[pos]
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xor edx,edx
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mov ecx,80
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div ecx
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cmp edx,0
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jnz addx1
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mov eax,[pos]
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jmp cm1
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nolf:
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cmp bl,8 ; BACKSPACE
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jne nobasp
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mov eax,[pos]
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dec eax
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mov [pos],eax
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mov [eax+text],byte 32
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mov [eax+text+60*80],byte 0
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jmp newdata
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nobasp:
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cmp bl,15 ; CHARACTER
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jbe newdata
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mov eax,[pos]
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mov [eax+text],bl
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mov eax,[pos]
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add eax,1
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cm1:
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mov ebx,[scroll+4]
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imul ebx,80
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cmp eax,ebx
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jb noeaxz
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mov esi,text+80
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mov edi,text
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mov ecx,ebx
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cld
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rep movsb
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mov eax,ebx
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sub eax,80
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noeaxz:
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mov [pos],eax
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newdata:
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ret
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key: ; KEY
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mov eax,2 ; send to modem
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mcall
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mov ebx, [socket_status]
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cmp ebx, 4 ; connection open?
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jne still ; no, so ignore key
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shr eax,8
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cmp eax,178 ; ARROW KEYS
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jne noaup
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mov al,'A'
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call arrow
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jmp still
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noaup:
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cmp eax,177
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jne noadown
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mov al,'B'
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call arrow
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jmp still
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noadown:
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cmp eax,179
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jne noaright
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mov al,'C'
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call arrow
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jmp still
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noaright:
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cmp eax,176
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jne noaleft
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mov al,'D'
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call arrow
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jmp still
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noaleft:
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modem_out:
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call to_modem
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jmp still
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button: ; BUTTON
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mov eax,17
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mcall
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cmp ah,1 ; CLOSE PROGRAM
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jne noclose
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mov eax,53
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mov ebx,8
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mov ecx,[socket]
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mcall
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or eax,-1
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mcall
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noclose:
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cmp ah, 2 ; Set IP
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jne notip
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mov [string_x], dword 78
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mov [string_y], dword 276
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mov [string_length], dword 15
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call read_string
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mov esi,string-1
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mov edi,ip_address
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xor eax,eax
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ip1:
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inc esi
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cmp [esi],byte '0'
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jb ip2
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cmp [esi],byte '9'
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jg ip2
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imul eax,10
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movzx ebx,byte [esi]
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sub ebx,48
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add eax,ebx
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jmp ip1
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ip2:
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mov [edi],al
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xor eax,eax
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inc edi
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cmp edi,ip_address+3
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jbe ip1
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call draw_window
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jmp still
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notip:
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cmp ah, 3 ; set port
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jne notport
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mov [string_x], dword 215
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mov [string_y], dword 276
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mov [string_length], dword 4
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call read_string
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mov esi,string-1
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mov edi,port
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xor eax,eax
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ip11:
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inc esi
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cmp [esi],byte '0'
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jb ip21
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cmp [esi],byte '9'
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jg ip21
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imul eax,10
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movzx ebx,byte [esi]
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sub ebx,48
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add eax,ebx
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jmp ip11
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ip21:
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mov [edi],al
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inc edi
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mov [edi],ah
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call draw_window
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jmp still
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notport:
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cmp ah, 4 ; connect
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jne notcon
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mov eax, [socket_status]
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cmp eax, 4
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je still
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call connect
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jmp still
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notcon:
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cmp ah,5 ; disconnect
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jne notdiscon
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call disconnect
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jmp still
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notdiscon: ; Echo Toggle
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cmp ah, 6
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jne still
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mov al, [echo]
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not al
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mov [echo], al
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call draw_window
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jmp still
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arrow:
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push eax
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mov al,27
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call to_modem
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mov al,'['
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call to_modem
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pop eax
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call to_modem
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ret
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to_modem:
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pusha
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push ax
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mov [tx_buff], al
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mov edx, 1
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cmp al, 13
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jne tm_000
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mov edx, 2
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tm_000:
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mov eax,53
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mov ebx,7
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mov ecx,[socket]
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mov esi, tx_buff
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mcall
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pop bx
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mov al, [echo]
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cmp al, 0
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je tm_001
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push bx
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call handle_data
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pop bx
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cmp bl, 13
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jne tm_002
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mov bl, 10
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call handle_data
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tm_002:
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call draw_text
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tm_001:
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popa
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ret
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disconnect:
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mov eax,53
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mov ebx,8
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mov ecx,[socket]
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mcall
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ret
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connect:
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pusha
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mov ecx, 1000 ; local port starting at 1000
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getlp:
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inc ecx
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push ecx
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mov eax, 53
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mov ebx, 9
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mcall
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pop ecx
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cmp eax, 0 ; is this local port in use?
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jz getlp ; yes - so try next
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mov eax,53
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mov ebx,5
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mov dl, [ip_address + 3]
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shl edx, 8
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mov dl, [ip_address + 2]
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shl edx, 8
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mov dl, [ip_address + 1]
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shl edx, 8
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mov dl, [ip_address]
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mov esi, edx
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movzx edx, word [port] ; telnet port id
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mov edi,1 ; active open
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mcall
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mov [socket], eax
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popa
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ret
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; *********************************************
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; ******* WINDOW DEFINITIONS AND DRAW ********
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; *********************************************
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draw_window:
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pusha
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mov eax,12
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mov ebx,1
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mcall
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xor eax,eax ; DRAW WINDOW
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mov ebx,100*65536+491 + 8 +15
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mov ecx,100*65536+270 + 20 ; 20 for status bar
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mov edx,0x14000000
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mov edi,title
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mcall
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; draw status bar
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mov eax, 13
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mov ebx, 4*65536+484 + 8 +15
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mov ecx, 270*65536 + 3
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mov edx, 0x00557799
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mcall
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mov eax,8 ; BUTTON 2: SET IP
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mov ebx,4*65536+70
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mov ecx,273*65536+12
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mov esi, 0x00557799
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mov edx,2
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mcall
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mov eax,4 ; Button text
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mov ebx,6*65536+276
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mov ecx,0x00ffffff
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mov edx,setipt
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mov esi,setiplen-setipt
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mcall
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mov eax,47
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mov edi,ip_address ; display IP address
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mov edx,78*65536+276
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mov esi,0x00ffffff
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mov ebx,3*65536
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ipdisplay:
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movzx ecx,byte [edi]
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mcall
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add edx,6*4*65536
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inc edi
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cmp edi,ip_address+4
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jb ipdisplay
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mov eax,8 ; BUTTON 3: SET PORT
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mov ebx,173*65536+38
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mov ecx,273*65536+12
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mov edx,3
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mov esi, 0x00557799
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mcall
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mov eax,4 ; Button text
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mov ebx,178*65536+276
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mov ecx,0x00ffffff
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mov edx,setportt
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mov esi,setportlen-setportt
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mcall
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mov edx,216*65536+276 ; display port
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mov esi,0x00ffffff
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mov ebx,4*65536
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mov eax,47
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movzx ecx,word [port]
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mcall
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mov eax,8 ; BUTTON 4: Connect
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mov ebx,250*65536+50
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mov ecx,273*65536+12
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mov esi, 0x00557799
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mov edx,4
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mcall
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mov eax,4 ; Button text
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mov ebx,255*65536+276
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mov ecx,0x00ffffff
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mov edx,cont
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mov esi,conlen-cont
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mcall
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mov eax,8 ; BUTTON 5: disconnect
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mov ebx,303*65536+70
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mov ecx,273*65536+12
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mov edx,5
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mov esi, 0x00557799
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mcall
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mov eax,4 ; Button text
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mov ebx,307*65536+276
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mov ecx,0x00ffffff
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mov edx,dist
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mov esi,dislen-dist
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mcall
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mov esi,contlen-contt ; display connected status
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mov edx, contt
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mov eax, [socket_status]
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cmp eax, 4 ; 4 is connected
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je pcon
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mov esi,discontlen-discontt
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mov edx, discontt
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pcon:
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mov eax,4 ; status text
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mov ebx,380*65536+276
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mov ecx,0x00ffffff
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mcall
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mov eax,8 ; BUTTON 6: echo
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mov ebx,460*65536+50
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mov ecx,273*65536+12
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mov edx,6
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mov esi, 0x00557799
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mcall
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mov edx,echot
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mov esi,echolen-echot
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mov al, [echo]
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cmp al, 0
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jne peo
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mov edx,echoot
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mov esi,echoolen-echoot
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peo:
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mov eax,4 ; Button text
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mov ebx,463*65536+276
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mov ecx,0x00ffffff
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mcall
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xor eax,eax
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mov edi,text+80*30
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mov ecx,80*30 /4
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cld
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rep stosd
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call draw_text
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mov eax,12
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mov ebx,2
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mcall
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popa
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ret
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draw_text:
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pusha
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mov esi,text
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mov eax,0
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mov ebx,0
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newletter:
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mov cl,[esi]
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cmp cl,[esi+30*80]
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jne yesletter
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jmp noletter
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yesletter:
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mov [esi+30*80],cl
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; erase character
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pusha
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mov edx, 0 ; bg colour
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mov ecx, ebx
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add ecx, 26
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shl ecx, 16
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mov cx, 9
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mov ebx, eax
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add ebx, 6
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shl ebx, 16
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mov bx, 6
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mov eax, 13
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mcall
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popa
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; draw character
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pusha
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mov ecx, 0x00ffffff
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push bx
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mov ebx,eax
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add ebx,6
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shl ebx,16
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pop bx
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add bx,26
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mov eax,4
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mov edx,esi
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mov esi,1
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mcall
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popa
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noletter:
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add esi,1
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add eax,6
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cmp eax,80*6
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jb newletter
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mov eax,0
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add ebx,10
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cmp ebx,24*10
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jb newletter
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popa
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ret
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read_string:
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mov edi,string
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mov eax,'_'
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mov ecx,[string_length]
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inc ecx
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cld
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rep stosb
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call print_text
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mov edi,string
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f11:
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mov eax,10
|
|
mcall
|
|
cmp eax,2
|
|
jne read_done
|
|
mov eax,2
|
|
mcall
|
|
shr eax,8
|
|
cmp eax,13
|
|
je read_done
|
|
cmp eax,8
|
|
jnz nobsl
|
|
cmp edi,string
|
|
jz f11
|
|
sub edi,1
|
|
mov [edi],byte '_'
|
|
call print_text
|
|
jmp f11
|
|
nobsl:
|
|
cmp eax,dword 31
|
|
jbe f11
|
|
cmp eax,dword 95
|
|
jb keyok
|
|
sub eax,32
|
|
keyok:
|
|
mov [edi],al
|
|
call print_text
|
|
|
|
inc edi
|
|
mov esi,string
|
|
add esi,[string_length]
|
|
cmp esi,edi
|
|
jnz f11
|
|
|
|
read_done:
|
|
|
|
call print_text
|
|
|
|
ret
|
|
|
|
|
|
print_text:
|
|
|
|
pusha
|
|
|
|
mov eax,13
|
|
mov ebx,[string_x]
|
|
shl ebx,16
|
|
add ebx,[string_length]
|
|
imul bx,6
|
|
mov ecx,[string_y]
|
|
shl ecx,16
|
|
mov cx,8
|
|
mov edx,0x00000000
|
|
mcall
|
|
|
|
mov eax,4
|
|
mov ebx,[string_x]
|
|
shl ebx,16
|
|
add ebx,[string_y]
|
|
mov ecx,0x00ffffff
|
|
mov edx,string
|
|
mov esi,[string_length]
|
|
mcall
|
|
|
|
popa
|
|
ret
|
|
|
|
|
|
|
|
|
|
; DATA AREA
|
|
|
|
telnetrep db 0xff,0xfc,0x00
|
|
telnetstate db 0
|
|
|
|
string_length dd 16
|
|
string_x dd 200
|
|
string_y dd 60
|
|
|
|
string db '________________'
|
|
|
|
tx_buff db 0, 10
|
|
ip_address db 001,002,003,004
|
|
port db 0,0
|
|
echo db 0
|
|
socket dd 0x0
|
|
socket_status dd 0x0
|
|
pos dd 80 * 1
|
|
scroll dd 1
|
|
dd 24
|
|
wcolor dd 0x000000
|
|
title db 'Telnet v0.1',0
|
|
setipt db 'IP Address: . . .'
|
|
setiplen:
|
|
setportt db 'Port:'
|
|
setportlen:
|
|
cont db 'Connect'
|
|
conlen:
|
|
dist db 'Disconnect'
|
|
dislen:
|
|
contt db 'Connected'
|
|
contlen:
|
|
discontt db 'Disconnected'
|
|
discontlen:
|
|
echot db 'Echo On'
|
|
echolen:
|
|
echoot db 'Echo Off'
|
|
echoolen:
|
|
|
|
|
|
|
|
text:
|
|
I_END:
|