;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;
; TERMINAL
;
; Compile with FASM for Menuet
;
use32
org 0x0
db 'MENUET01' ; header
dd 0x01 ; header version
dd START ; entry point
dd I_END ; image size
dd I_END+0x10000 ; required memory
dd I_END+0x10000 ; esp
dd 0x0 , 0x0 ; I_Param , I_Path
include 'lang.inc'
include 'macros.inc'
START: ; start of execution
; Clear the screen memory
mov eax, ' '
mov edi,text
mov ecx,80*30 /4
cld
rep stosd
call draw_window
still:
; check connection status
mov eax,53
mov ebx,6
mov ecx,[socket]
int 0x40
mov ebx, [socket_status]
mov [socket_status], eax
cmp eax, ebx
je waitev
call draw_window
waitev:
mov eax,23 ; wait here for event
mov ebx,20
int 0x40
cmp eax,1 ; redraw request ?
je red
cmp eax,2 ; key in buffer ?
je key
cmp eax,3 ; button in buffer ?
je button
; any data from the socket?
mov eax, 53
mov ebx, 2
mov ecx, [socket]
int 0x40
cmp eax, 0
jne read_input
jmp still
read_input:
push ecx
mov eax, 53
mov ebx, 3
mov ecx, [socket]
int 0x40
pop ecx
call handle_data
push ecx
mov eax, 53
mov ebx, 2
mov ecx, [socket]
int 0x40
pop ecx
cmp eax, 0
jne read_input
call draw_text
jmp still
handle_data:
; Telnet servers will want to negotiate options about our terminal window
; just reject them all.
; Telnet options start with the byte 0xff and are 3 bytes long.
mov al, [telnetstate]
cmp al, 0
je state0
cmp al, 1
je state1
cmp al, 2
je state2
jmp hd001
state0:
cmp bl, 255
jne hd001
mov al, 1
mov [telnetstate], al
ret
state1:
mov al, 2
mov [telnetstate], al
ret
state2:
mov al, 0
mov [telnetstate], al
mov [telnetrep+2], bl
mov edx, 3
mov eax,53
mov ebx,7
mov ecx,[socket]
mov esi, telnetrep
int 0x40
ret
hd001:
cmp bl,13 ; BEGINNING OF LINE
jne nobol
mov ecx,[pos]
add ecx,1
boll1:
sub ecx,1
mov eax,ecx
xor edx,edx
mov ebx,80
div ebx
cmp edx,0
jne boll1
mov [pos],ecx
jmp newdata
nobol:
cmp bl,10 ; LINE DOWN
jne nolf
addx1:
add [pos],dword 1
mov eax,[pos]
xor edx,edx
mov ecx,80
div ecx
cmp edx,0
jnz addx1
mov eax,[pos]
jmp cm1
nolf:
cmp bl,8 ; BACKSPACE
jne nobasp
mov eax,[pos]
dec eax
mov [pos],eax
mov [eax+text],byte 32
mov [eax+text+60*80],byte 0
jmp newdata
nobasp:
cmp bl,15 ; CHARACTER
jbe newdata
mov eax,[pos]
mov [eax+text],bl
mov eax,[pos]
add eax,1
cm1:
mov ebx,[scroll+4]
imul ebx,80
cmp eax,ebx
jb noeaxz
mov esi,text+80
mov edi,text
mov ecx,ebx
cld
rep movsb
mov eax,ebx
sub eax,80
noeaxz:
mov [pos],eax
newdata:
ret
red: ; REDRAW WINDOW
call draw_window
jmp still
key: ; KEY
mov eax,2 ; send to modem
int 0x40
mov ebx, [socket_status]
cmp ebx, 4 ; connection open?
jne still ; no, so ignore key
shr eax,8
cmp eax,178 ; ARROW KEYS
jne noaup
mov al,'A'
call arrow
jmp still
noaup:
cmp eax,177
jne noadown
mov al,'B'
call arrow
jmp still
noadown:
cmp eax,179
jne noaright
mov al,'C'
call arrow
jmp still
noaright:
cmp eax,176
jne noaleft
mov al,'D'
call arrow
jmp still
noaleft:
modem_out:
call to_modem
jmp still
button: ; BUTTON
mov eax,17
int 0x40
cmp ah,1 ; CLOSE PROGRAM
jne noclose
mov eax,53
mov ebx,8
mov ecx,[socket]
int 0x40
mov eax,-1
int 0x40
noclose:
cmp ah, 2 ; Set IP
jne notip
mov [string_x], dword 78
mov [string_y], dword 276
mov [string_length], dword 15
call read_string
mov esi,string-1
mov edi,ip_address
xor eax,eax
ip1:
inc esi
cmp [esi],byte '0'
jb ip2
cmp [esi],byte '9'
jg ip2
imul eax,10
movzx ebx,byte [esi]
sub ebx,48
add eax,ebx
jmp ip1
ip2:
mov [edi],al
xor eax,eax
inc edi
cmp edi,ip_address+3
jbe ip1
call draw_window
jmp still
notip:
cmp ah, 3 ; set port
jne notport
mov [string_x], dword 215
mov [string_y], dword 276
mov [string_length], dword 4
call read_string
mov esi,string-1
mov edi,port
xor eax,eax
ip11:
inc esi
cmp [esi],byte '0'
jb ip21
cmp [esi],byte '9'
jg ip21
imul eax,10
movzx ebx,byte [esi]
sub ebx,48
add eax,ebx
jmp ip11
ip21:
mov [edi],al
inc edi
mov [edi],ah
call draw_window
jmp still
notport:
cmp ah, 4 ; connect
jne notcon
mov eax, [socket_status]
cmp eax, 4
je still
call connect
jmp still
notcon:
cmp ah,5 ; disconnect
jne notdiscon
call disconnect
jmp still
notdiscon: ; Echo Toggle
cmp ah, 6
jne still
mov al, [echo]
not al
mov [echo], al
call draw_window
jmp still
arrow:
push eax
mov al,27
call to_modem
mov al,'['
call to_modem
pop eax
call to_modem
ret
to_modem:
pusha
push ax
mov [tx_buff], al
mov edx, 1
cmp al, 13
jne tm_000
mov edx, 2
tm_000:
mov eax,53
mov ebx,7
mov ecx,[socket]
mov esi, tx_buff
int 0x40
pop bx
mov al, [echo]
cmp al, 0
je tm_001
push bx
call handle_data
pop bx
cmp bl, 13
jne tm_002
mov bl, 10
call handle_data
tm_002:
call draw_text
tm_001:
popa
ret
disconnect:
mov eax,53
mov ebx,8
mov ecx,[socket]
int 0x40
ret
connect:
pusha
mov ecx, 1000 ; local port starting at 1000
getlp:
inc ecx
push ecx
mov eax, 53
mov ebx, 9
int 0x40
pop ecx
cmp eax, 0 ; is this local port in use?
jz getlp ; yes - so try next
mov eax,53
mov ebx,5
mov dl, [ip_address + 3]
shl edx, 8
mov dl, [ip_address + 2]
shl edx, 8
mov dl, [ip_address + 1]
shl edx, 8
mov dl, [ip_address]
mov esi, edx
movzx edx, word [port] ; telnet port id
mov edi,1 ; active open
int 0x40
mov [socket], eax
popa
ret
; *********************************************
; ******* WINDOW DEFINITIONS AND DRAW ********
; *********************************************
draw_window:
pusha
mov eax,12
mov ebx,1
int 0x40
xor eax,eax ; DRAW WINDOW
mov ebx,100*65536+491 + 8 +15
mov ecx,100*65536+270 + 20 ; 20 for status bar
mov edx,0x13000000
mov edi,labelt
int 0x40
; draw status bar
mov eax, 13
mov ebx, 4*65536+484 + 8 +15
mov ecx, 270*65536 + 3
mov edx, 0x00557799
int 0x40
mov eax,8 ; BUTTON 2: SET IP
mov ebx,4*65536+70
mov ecx,273*65536+12
mov esi, 0x00557799
mov edx,2
int 0x40
mov eax,4 ; Button text
mov ebx,6*65536+276
mov ecx,0x00ffffff
mov edx,setipt
mov esi,setiplen-setipt
int 0x40
mov edi,ip_address ; display IP address
mov edx,78*65536+276
mov esi,0x00ffffff
mov ebx,3*65536
ipdisplay:
mov eax,47
movzx ecx,byte [edi]
int 0x40
add edx,6*4*65536
inc edi
cmp edi,ip_address+4
jb ipdisplay
mov eax,8 ; BUTTON 3: SET PORT
mov ebx,173*65536+38
mov ecx,273*65536+12
mov edx,3
mov esi, 0x00557799
int 0x40
mov eax,4 ; Button text
mov ebx,178*65536+276
mov ecx,0x00ffffff
mov edx,setportt
mov esi,setportlen-setportt
int 0x40
mov edx,216*65536+276 ; display port
mov esi,0x00ffffff
mov ebx,4*65536
mov eax,47
movzx ecx,word [port]
int 0x40
mov eax,8 ; BUTTON 4: Connect
mov ebx,250*65536+50
mov ecx,273*65536+12
mov esi, 0x00557799
mov edx,4
int 0x40
mov eax,4 ; Button text
mov ebx,255*65536+276
mov ecx,0x00ffffff
mov edx,cont
mov esi,conlen-cont
int 0x40
mov eax,8 ; BUTTON 5: disconnect
mov ebx,303*65536+70
mov ecx,273*65536+12
mov edx,5
mov esi, 0x00557799
int 0x40
mov eax,4 ; Button text
mov ebx,307*65536+276
mov ecx,0x00ffffff
mov edx,dist
mov esi,dislen-dist
int 0x40
mov esi,contlen-contt ; display connected status
mov edx, contt
mov eax, [socket_status]
cmp eax, 4 ; 4 is connected
je pcon
mov esi,discontlen-discontt
mov edx, discontt
pcon:
mov eax,4 ; status text
mov ebx,380*65536+276
mov ecx,0x00ffffff
int 0x40
mov eax,8 ; BUTTON 6: echo
mov ebx,460*65536+50
mov ecx,273*65536+12
mov edx,6
mov esi, 0x00557799
int 0x40
mov edx,echot
mov esi,echolen-echot
mov al, [echo]
cmp al, 0
jne peo
mov edx,echoot
mov esi,echoolen-echoot
peo:
mov eax,4 ; Button text
mov ebx,463*65536+276
mov ecx,0x00ffffff
int 0x40
xor eax,eax
mov edi,text+80*30
mov ecx,80*30 /4
cld
rep stosd
call draw_text
mov eax,12
mov ebx,2
int 0x40
popa
ret
draw_text:
pusha
mov esi,text
mov eax,0
mov ebx,0
newletter:
mov cl,[esi]
cmp cl,[esi+30*80]
jne yesletter
jmp noletter
yesletter:
mov [esi+30*80],cl
; erase character
pusha
mov edx, 0 ; bg colour
mov ecx, ebx
add ecx, 26
shl ecx, 16
mov cx, 9
mov ebx, eax
add ebx, 6
shl ebx, 16
mov bx, 6
mov eax, 13
int 0x40
popa
; draw character
pusha
mov ecx, 0x00ffffff
push bx
mov ebx,eax
add ebx,6
shl ebx,16
pop bx
add bx,26
mov eax,4
mov edx,esi
mov esi,1
int 0x40
popa
noletter:
add esi,1
add eax,6
cmp eax,80*6
jb newletter
mov eax,0
add ebx,10
cmp ebx,24*10
jb newletter
popa
ret
read_string:
mov edi,string
mov eax,'_'
mov ecx,[string_length]
inc ecx
cld
rep stosb
call print_text
mov edi,string
f11:
mov eax,10
int 0x40
cmp eax,2
jne read_done
mov eax,2
int 0x40
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
int 0x40
mov eax,4
mov ebx,[string_x]
shl ebx,16
add ebx,[string_y]
mov ecx,0x00ffffff
mov edx,string
mov esi,[string_length]
int 0x40
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
labelt 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: