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linbpq/AGWMon.asm

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PAGE 56,132
;
.386
;
; SEGMENT definitions and order
;
;* 32 Bit code
_TEXT SEGMENT DWORD USE32 PUBLIC 'CODE'
_TEXT ENDS
;* Contains 32 Bit data
_DATA SEGMENT DWORD PUBLIC 'DATA'
_DATA ENDS
ASSUME CS:FLAT, DS:FLAT, ES:FLAT, SS:FLAT
OFFSET32 EQU <OFFSET FLAT:>
_DATA SEGMENT
CR EQU 0DH
LF EQU 0AH
D10 DW 10
D60 DD 60
D3600 DD 3600
D86400 DD 86400
TIMESTAMP DD 0
NEWVALUE DW 0
WORD10 DW 10
WORD16 DW 16
;
; BASIC LINK LEVEL MESSAGE BUFFER LAYOUT
;
MESSAGE STRUC
MSGCHAIN DD ? ; CHAIN WORD
MSGPORT DB ? ; PORT
MSGLENGTH DW ? ; LENGTH
MSGDEST DB 7 DUP (?) ; DESTINATION
MSGORIGIN DB 7 DUP (?) ; ORIGIN
;
; MAY BE UP TO 56 BYTES OF DIGIS
;
MSGCONTROL DB ? ; CONTROL BYTE
MSGPID DB ? ; PROTOCOL IDENTIFIER
MSGDATA DB ? ; START OF LEVEL 2 MESSAGE
;
MESSAGE ENDS
;
;
;
; L4FLAGS DEFINITION
;
L4BUSY EQU 80H ; BNA - DONT SEND ANY MORE
L4NAK EQU 40H ; NEGATIVE RESPONSE FLAG
L4MORE EQU 20H ; MORE DATA FOLLOWS - FRAGMENTATION FLAG
L4CREQ EQU 1 ; CONNECT REQUEST
L4CACK EQU 2 ; CONNECT ACK
L4DREQ EQU 3 ; DISCONNECT REQUEST
L4DACK EQU 4 ; DISCONNECT ACK
L4INFO EQU 5 ; INFORMATION
L4IACK EQU 6 ; INFORMATION ACK
;
NULL EQU 00H
CR EQU 0DH
LF EQU 0AH
NETROM_PID EQU 0CFH
NODES_SIG EQU 0FFH
;
PORT_MSG DB ' Port=',NULL
NODES_MSG DB ' (NetRom Routing)',CR,NULL
NETROM_MSG DB ' NET/ROM',CR,' ',NULL
TO_MSG DB ' To ',NULL
TTL_MSG DB ' ttl=',NULL
AT_MSG DB ' at ',NULL
VIA_MSG DB ' via ',NULL
QUALITY_MSG DB ' qlty=',NULL
LEN_MSG DB ' Len=',0
PID_MSG DB ' pid=',NULL
MYCCT_MSG DB ' my'
CCT_MSG DB ' cct=',0
TIM_MSG DB ' t/o=',0
WINDOW DB ' w=',0
CONN_REQ_MSG DB ' <CON REQ>',NULL
CONN_ACK_MSG DB ' <CON ACK>',NULL
CONN_NAK_MSG DB ' <CON NAK> - BUSY',NULL
DISC_REQ_MSG DB ' <DISC REQ>',NULL
DISC_ACK_MSG DB ' <DISC ACK>',NULL
INFO_MSG DB ' <INFO S',NULL
INFO_ACK_MSG DB ' <INFO ACK R',NULL
DUFF_NET_MSG DB ' <????>',NULL
IP_MSG DB ' <IP> ',NULL
SABM_MSG DB 'SABM ',NULL
DISC_MSG DB 'DISC ',NULL
UA_MSG DB 'UA ',NULL
DM_MSG DB 'DM ',NULL
RR_MSG DB 'RR ',NULL
RNR_MSG DB 'RNR ',NULL
UI_MSG DB 'UI',NULL
FRMR_MSG DB 'FRMR ',NULL
REJ_MSG DB 'REJ ',NULL
;
; IP AND TCP BITS
;
IPMSG STRUC
;
; FORMAT OF IP HEADER
;
; NOTE THESE FIELDS ARE STORED HI ORDER BYTE FIRST (NOT NORMAL 8086 FORMAT)
;
VERLEN DB 0 ; 4 BITS VERSION, 4 BITS LENGTH
TOS DB 0 ; TYPE OF SERVICE
IPLENGTH DW 0 ; DATAGRAM LENGTH
IPID DW 0 ; IDENTIFICATION
FRAGWORD DW 0 ; 3 BITS FLAGS, 13 BITS OFFSET
IPTTL DB 0
IPPROTOCOL DB 0 ; HIGHER LEVEL PROTOCOL
IPCHECKSUM DW 0 ; HEADER CHECKSUM
IPSOURCE DD 0
IPDEST DD 0
;
; FORMAT OF TCP HEADER WITHIN AN IP DATAGRAM
;
; NOTE THESE FIELDS ARE STORED HI ORDER BYTE FIRST (NOT NORMAL 8086 FORMAT)
;
SOURCEPORT DW 0
DESTPORT DW 0
SEQNUM DD 0
ACKNUM DD 0
TCPCONTROL DB 0 ; 4 BITS DATA OFFSET 4 RESERVED
TCPFLAGS DB 0 ; (2 RESERVED) URG ACK PSH RST SYN FIN
TCPWINDOW DW 0
CHECKSUM DW 0
URGPTR DW 0
;
; OPTIONS AND/OR DATA MAY FOLLOW
;
TCPOPTIONS DB 4 DUP (0)
IPMSG ENDS
;
; TCPFLAGS BITS
;
FIN EQU 1B
SYN EQU 10B
RST EQU 100B
PSH EQU 1000B
ACK EQU 10000B
URG EQU 100000B
TCP DB 'TCP: ',0
ICMP DB 'ICMP: ',0
LEN DB ' LEN: ',0
SEQTEXT DB ' SEQ: ',0
ACKTEXT DB 'ACK: ',0
WINDTEXT DB 'WIN: ',0
SYNTEXT DB 'SYN ',0
FINTEXT DB 'FIN ',0
RSTTEXT DB 'RST ',0
PSHTEXT DB 'PSH ',0
ACKTEXT1 DB 'ACK ',0
URGTEXT DB 'URG ',0
BADSUM DB ' CHECKSUM ERROR ',0
;-----------------------------------------------------------------------------;
; Parameter area for received frame ;
;-----------------------------------------------------------------------------;
PORT_NO DB 0 ; Received port number 0 - 256
VERSION_NO DB 0 ; Version 1 or 2 1,2
POLL_FINAL DB 0 ; Poll or Final ? P,F
COMM_RESP DB 0 ; Command or Response C,R
FRAME_TYPE DB 0 ; Frame Type UI etc in Hex
PID DB 0 ; Protocol ID
FRAME_LENGTH DD 0 ; Length of frame 0 - 65...
NR DB 0 ; N(R) Flag
NS DB 0 ; N(S) Flag
INFO_FLAG DB 0 ; Information Packet ? 0 No, 1 Yes
OPCODE DB 0 ; L4 FRAME TYPE
FRMRFLAG DB 0
TRACEFLAG DB 1
MALL DB 1
HEADERLN DB 1
MCOM DB 1
MTX DB 1
MMASK DW 0FFFFH
;
; HDLC COMMANDS (WITHOUT P/F)
;
UI EQU 3
SABM EQU 2FH
DISC EQU 43H
DM EQU 0FH
UA EQU 63H
FRMR EQU 87H
RR EQU 1
RNR EQU 5
REJ EQU 9
;
PFBIT EQU 10H ; POLL/FINAL BIT IN CONTROL BYTE
CRLF DB 0DH,0AH
AX25CALL DB 7 DUP (0) ; WORK AREA FOR AX25 <> NORMAL CALL CONVERSION
NORMCALL DB 10 DUP (0) ; CALLSIGN IN NORMAL FORMAT
NORMLEN DD 0 ; LENGTH OF CALL IN NORMCALL
;
TENK DD 10000
DD 1000
WORD100 DD 100
DWORD10 DD 10
;
ACCUM DB 4 DUP (0)
CONVFLAG DB 0
SUPPRESS DB 0 ; ZERO SUPPRESS FLAG
SAVESI DD 0
SAVEDI DD 0
_DATA ENDS
; 2:Fm GM8BPQ-2 To NODES <UI pid=CF Len=49 >[18:49:56]
;FF BPQ (NetRom Routing)
; N5IN-9 N9 N5IN-3 152
; GB7CB GALA N5IN-3 151
; 1:Fm GM8BPQ To APU25N <UI pid=F0 Len=29 >[18:51:48]
;=5828.55N/00612.62W- {UIV32}
; 1:Fm GM8BPQ-1 To BPQ <SABM P>[09:09:51]
_TEXT SEGMENT PUBLIC 'CODE'
PUBLIC _AGWMONDECODE,_AGWMONOPTIONS
_AGWMONOPTIONS:
MOV MMASK,AX
MOV MTX,BL
MOV MCOM,CL
RET
_AGWMONDECODE:
;
; esi=message, edi=buffer, return length in ECX amd frame type in EAX
;
MOV SAVESI,ESI
MOV SAVEDI,EDI
MOV TIMESTAMP,EAX
cmp TRACEFLAG,0
jne TRACEOK
TRACERET:
ret
TRACEOK:
MOVZX ECX,MSGLENGTH[ESI]
;
; GET THE CONTROL BYTE, TO SEE IF THIS FRAME IS TO BE DISPLAYED
;
PUSH ESI
MOV ECX,9 ; MAX DIGIS + 1
CTRLLOOP:
TEST BYTE PTR MSGCONTROL-1[ESI],1
JNZ CTRLFOUND
ADD ESI,7
LOOP CTRLLOOP
;
; INVALID FRAME
;
POP ESI
MOV ECX,0
RET
CTRLFOUND:
MOV AL,MSGCONTROL[ESI]
POP ESI
;
TEST AL,1 ; I FRAME
JZ IFRAME
AND AL,NOT PFBIT ; CLEAR P/F
CMP AL,3 ; UI
JE OKTOTRACE ; ALWAYS DO UI
CMP AL,FRMR
JE OKTOTRACE ; ALWAYS DO FRMR
;
; USEQ/CONTROL - TRACE IF MCOM ON
;
CMP MCOM,0
JNE OKTOTRACE
MOV ECX,0
RET
;-----------------------------------------------------------------------------;
; Check for MALL ;
;-----------------------------------------------------------------------------;
IFRAME:
cmp MALL,0
jne OKTOTRACE
MOV ECX,0
ret
OKTOTRACE:
;
;-----------------------------------------------------------------------------;
; Get the port number of the received frame ;
;-----------------------------------------------------------------------------;
mov CL,MSGPORT[ESI]
mov PORT_NO,CL
TEST CL,80H
JZ NOT_TX
;
; TRANSMITTED FRAME - SEE IF MTX ON
;
CMP MTX,1
JE NOT_TX
MOV ECX,0
RET
NOT_TX:
AND CL,7FH ; MASK T/R BIT
DEC CL
MOV AX,1
SHL AX,CL ; SHIFT BIT UP
TEST MMASK,AX
JNZ TRACEOK1
MOV ECX,0
RET
TRACEOK1:
MOV FRMRFLAG,0
mov AH,MSGDEST+6[ESI]
mov AL,MSGORIGIN+6[ESI]
mov COMM_RESP,0 ; Clear Command/Response Flag
;-----------------------------------------------------------------------------;
; Is it a Poll/Final or Command/Response ;
;-----------------------------------------------------------------------------;
test AH,80H
mov COMM_RESP,'C'
jnz NOT_RESPONSE
mov COMM_RESP,'R'
NOT_RESPONSE:
;-----------------------------------------------------------------------------;
; Is this version 1 or 2 of AX25 ? ;
;-----------------------------------------------------------------------------;
xor AH,AL
test AH,80H
mov VERSION_NO,1
je VERSION_1
mov VERSION_NO,2
VERSION_1:
mov al,PORT_NO
and al,7fh
cmp AL,10
JAE @F
PUSH EAX
MOV AL,' '
CALL PUTCHAR
POP EAX
@@:
call DISPLAY_BYTE_1
MOV AL,':'
CALL PUTCHAR
MOV AL,'F'
CALL PUTCHAR
MOV AL,'m'
CALL PUTCHAR
MOV AL,' '
CALL PUTCHAR
;-----------------------------------------------------------------------------;
; Display Origin Callsign ;
;-----------------------------------------------------------------------------;
PUSH ESI
lea ESI,MSGORIGIN[ESI]
call CONVFROMAX25
mov ESI,OFFSET NORMCALL
call DISPADDR
POP ESI
PUSH ESI
mov EBX,OFFSET TO_MSG
call NORMSTR
;-----------------------------------------------------------------------------;
; Display Destination Callsign ;
;-----------------------------------------------------------------------------;
lea ESI,MSGDEST[ESI]
call CONVFROMAX25
mov ESI,OFFSET NORMCALL
call DISPADDR
pop ESI
movzx EAX,MSGLENGTH[ESI]
mov FRAME_LENGTH,EAX
mov CX,8 ; Max number of digi-peaters
;-----------------------------------------------------------------------------;
; Display any Digi-Peaters ;
;-----------------------------------------------------------------------------;
NEXT_DIGI:
test MSGORIGIN+6[ESI],1
jnz NO_MORE_DIGIS
add ESI,7
sub FRAME_LENGTH,7 ; Reduce length
push ESI
push ECX
lea ESI,MSGORIGIN[ESI]
call CONVFROMAX25 ; Convert to call
push EAX ; Last byte is in AH
mov AL,','
call PUTCHAR
mov ESI,OFFSET NORMCALL
call DISPADDR
pop EAX
test AH,80H
jz NOT_REPEATED
mov AL,'*'
call PUTCHAR
NOT_REPEATED:
pop ECX
pop ESI
loop NEXT_DIGI
NO_MORE_DIGIS:
MOV AL,' '
CALL PUTCHAR
;-----------------------------------------------------------------------------;
; If this is Version 2 get the Poll/Final Bit ;
;-----------------------------------------------------------------------------;
mov POLL_FINAL,0 ; Clear Poll/Final Flag
mov AL,MSGCONTROL[ESI] ; Get control byte
cmp COMM_RESP,'C'
jne NOT_COMM
test AL,PFBIT
je NOT_POLL
mov POLL_FINAL,'P'
NOT_POLL:
NOT_COMM:
cmp COMM_RESP,'R'
jne NOT_RESP
test AL,PFBIT
je NOT_FINAL
mov POLL_FINAL,'F'
NOT_FINAL:
NOT_RESP:
;-----------------------------------------------------------------------------;
; Start displaying the frame information ;
;-----------------------------------------------------------------------------;
and AL,NOT PFBIT ; Remove P/F bit
mov FRAME_TYPE,AL
mov AL,'<' ; Print "<"
call PUTCHAR
mov NR,0 ; Reset all the flags
mov NS,0
mov INFO_FLAG,0
mov AL,FRAME_TYPE
test AL,1
jne NOT_I_FRAME
;-----------------------------------------------------------------------------;
; Information frame ;
;-----------------------------------------------------------------------------;
mov AL,'I'
call PUTCHAR
mov AL,' '
call PUTCHAR
mov INFO_FLAG,1
mov NR,1
mov NS,1
jmp END_OF_TYPE
NOT_I_FRAME:
;-----------------------------------------------------------------------------;
; Un-numbered Information Frame ;
;-----------------------------------------------------------------------------;
cmp AL,UI
jne NOT_UI_FRAME
mov EBX,OFFSET UI_MSG
call NORMSTR
mov INFO_FLAG,1
jmp END_OF_TYPE
NOT_UI_FRAME:
test AL,10B
jne NOT_R_FRAME
;-----------------------------------------------------------------------------;
; Process supervisory frames ;
;-----------------------------------------------------------------------------;
mov NR,1 ; All supervisory frames have N(R)
and AL,0FH ; Mask the interesting bits
cmp AL,RR
jne NOT_RR_FRAME
mov EBX,OFFSET RR_MSG
call NORMSTR
jmp END_OF_TYPE
NOT_RR_FRAME:
cmp AL,RNR
jne NOT_RNR_FRAME
mov EBX,OFFSET RNR_MSG
call NORMSTR
jmp END_OF_TYPE
NOT_RNR_FRAME:
cmp AL,REJ
jne NOT_REJ_FRAME
mov EBX,OFFSET REJ_MSG
call NORMSTR
jmp END_OF_TYPE
NOT_REJ_FRAME:
mov NR,0 ; Don't display sequence number
mov AL,'?' ; Print "?"
call PUTCHAR
jmp END_OF_TYPE
;-----------------------------------------------------------------------------;
; Process all other frame types ;
;-----------------------------------------------------------------------------;
NOT_R_FRAME:
cmp AL,UA
jne NOT_UA_FRAME
mov EBX,OFFSET UA_MSG
call NORMSTR
jmp SHORT END_OF_TYPE
NOT_UA_FRAME:
cmp AL,DM
jne NOT_DM_FRAME
mov EBX,OFFSET DM_MSG
call NORMSTR
jmp SHORT END_OF_TYPE
NOT_DM_FRAME:
cmp AL,SABM
jne NOT_SABM_FRAME
mov EBX,OFFSET SABM_MSG
call NORMSTR
jmp SHORT END_OF_TYPE
NOT_SABM_FRAME:
cmp AL,DISC
jne NOT_DISC_FRAME
mov EBX,OFFSET DISC_MSG
call NORMSTR
jmp SHORT END_OF_TYPE
NOT_DISC_FRAME:
cmp AL,FRMR
jne NOT_FRMR_FRAME
mov EBX,OFFSET FRMR_MSG
call NORMSTR
MOV FRMRFLAG,1
jmp SHORT END_OF_TYPE
NOT_FRMR_FRAME:
mov AL,'?'
call PUTCHAR
END_OF_TYPE:
;----------------------------------------------------------------------------;
; If Version 2 Then display P/F C/R Information ;
;----------------------------------------------------------------------------;
IF 0
cmp VERSION_NO,2
jne NOT_VERSION_2
mov AL,' '
call PUTCHAR
mov AL,COMM_RESP ; Print Command/Response Flag
call PUTCHAR
ENDIF
cmp POLL_FINAL,0
je NO_POLL_FINAL
mov AL,POLL_FINAL ; Print Poll/Final Flag if Set
call PUTCHAR
mov AL,' '
call PUTCHAR
NO_POLL_FINAL:
NOT_VERSION_2:
;----------------------------------------------------------------------------;
; Display sequence numbers if applicable ;
;----------------------------------------------------------------------------;
cmp NR,1
jne NOT_NR_DATA
mov AL,'R'
call PUTCHAR
mov AL,FRAME_TYPE
rol AL,1
rol AL,1
rol AL,1
call DISPLAYSEQ
mov AL,' '
call PUTCHAR
NOT_NR_DATA:
cmp NS,1
jne NOT_NS_DATA
mov AL,'S'
call PUTCHAR
mov AL,FRAME_TYPE
ror AL,1
call DISPLAYSEQ
NOT_NS_DATA:
CMP INFO_FLAG,1
JNE NO_PID_LEN
mov EBX,OFFSET PID_MSG
call NORMSTR
PUSH ESI
lea ESI,MSGPID[ESI]
lodsb
POP ESI
CALL HEXOUT
mov EBX,OFFSET LEN_MSG
call NORMSTR
MOV EAX,FRAME_LENGTH
SUB EAX,23
CALL DISPLAY_BYTE_1
mov AL,' '
call PUTCHAR
NO_PID_LEN:
mov AL,'>'
call PUTCHAR
mov AL,'['
call PUTCHAR
;
; DISPLAY TIMESTAMP
;
MOV EAX,TIMESTAMP
mov EDX,0
DIV D86400
MOV EAX,EDX
MOV edx,0
DIV D3600
CALL DISPLAY_BYTE_2
MOV AL,':'
CALL PUTCHAR
MOV EAX,EDX
MOV EDX,0
DIV D60 ; MINS IN AX, SECS IN DX
PUSH DX
CALL DISPLAY_BYTE_2
MOV AL,':'
CALL PUTCHAR
POP AX ; SECS
CALL DISPLAY_BYTE_2
mov AL,']'
call PUTCHAR
CMP FRMRFLAG,0
JE NOTFRMR
;
; DISPLAY FRMR BYTES
;
lea ESI,MSGPID[ESI]
MOV ECX,3 ; TESTING
FRMRLOOP:
lodsb
CALL BYTE_TO_HEX
LOOP FRMRLOOP
JMP NO_INFO
NOTFRMR:
;----------------------------------------------------------------------------;
; Find the PID if an information frame ;
;----------------------------------------------------------------------------;
mov AL,0
cmp INFO_FLAG,1
jne NO_PID
lea ESI,MSGPID[ESI]
lodsb
NO_PID:
mov PID,AL
;----------------------------------------------------------------------------;
; Is this a NET/ROM message of any sort ? ;
;----------------------------------------------------------------------------;
MOV ECX,FRAME_LENGTH
cmp PID,NETROM_PID
je DISPLAY_NETROM
;----------------------------------------------------------------------------;
; Display the rest of the frame (If Any) ;
;----------------------------------------------------------------------------;
DISPLAY_INFO:
cmp INFO_FLAG,1 ; Is it an information packet ?
jne NO_INFO
XOR AL,AL ; IN CASE EMPTY
sub ECX,23
JCXZ NO_INFO ; EMPTY I FRAME
;
; PUT TEXT ON A NEW LINE
;
PUSH ECX
MOV AL,0DH
PUSH ESI
CALL PUTCHAR
POP ESI
POP ECX
SAMELN:
cmp ECX,257
jb LENGTH_OK
mov ECX,256
LENGTH_OK:
push ECX
lodsb
cmp AL,0AH
JE MONOK
CMP AL,0DH
JE MONOK
CMP AL,20H
JB SKIP_MON ; IGNORE OTHER CONTROLS
MONOK:
call PUTCHAR
SKIP_MON:
pop ECX
loop LENGTH_OK
NO_INFO:
;
; ADD CR UNLESS DATA ALREADY HAS ONE
;
CMP AL,CR
JE NOTANOTHER
ADD_CR:
mov AL,CR
call PUTCHAR
NOTANOTHER:
;
MOV ECX,EDI
SUB ECX,SAVEDI
MOVZX EAX,FRAME_TYPE
RET
;----------------------------------------------------------------------------;
; Display NET/ROM data ;
;----------------------------------------------------------------------------;
DISPLAY_NETROM:
MOV AL,CR
CALL PUTCHAR
lodsb
PUSH EAX
CALL HEXOUT
mov AL,' '
call PUTCHAR
POP EAX
cmp AL,NODES_SIG ; Check NODES message
JNE DISPLAY_NETROM_DATA
cmp FRAME_TYPE, 3
JNE DISPLAY_NETROM_DATA ; Not UI, so INP3
;----------------------------------------------------------------------------;
; Display NODES broadcast ;
;----------------------------------------------------------------------------;
push ECX
mov ECX,6
REP MOVSB ; ALIAS
mov EBX,OFFSET NODES_MSG
call NORMSTR
pop ECX
sub ECX,30 ; Header, mnemonic and signature length
NODES_LOOP:
cmp ECX,0
jbe NO_INFO
push ECX
push ESI ; Global push for each node
mov AL,' '
call PUTCHAR
mov AL,' '
call PUTCHAR
push ESI
add ESI,7 ; Display destination mnemonic
cmp BYTE PTR [ESI],' '
je NO_MNEMONIC
mov ECX,6 ; Max length
MNEMONIC_LOOP:
lodsb ; Get character
cmp AL,' ' ; Short mnemonic ?
je END_MNEMONIC
call PUTCHAR
loop MNEMONIC_LOOP
END_MNEMONIC:
mov AL,':'
call PUTCHAR
NO_MNEMONIC:
pop ESI
push ESI
call CONVFROMAX25 ; Display dest callsign
mov ESI,OFFSET NORMCALL
call DISPADDR
mov EBX,OFFSET VIA_MSG
call NORMSTR
pop ESI
add ESI,13 ; Point to neighbour callsign
push ESI
call CONVFROMAX25
mov ESI,OFFSET NORMCALL
call DISPADDR
mov EBX,OFFSET QUALITY_MSG
call NORMSTR
pop ESI
add ESI,7 ; Point to quality byte
mov AL,[ESI]
call DISPLAY_BYTE_1
mov AL,CR
call PUTCHAR
pop ESI
pop ECX
add ESI,21 ; Point to next destination
sub ECX,21 ; Remove length of each
jmp NODES_LOOP
;----------------------------------------------------------------------------;
; Display normal NET/ROM transmissions ;
;----------------------------------------------------------------------------;
DISPLAY_NETROM_DATA:
DEC ESI ; BACK TO DATA
mov EBX,OFFSET NETROM_MSG
call NORMSTR
PUSH ESI
call CONVFROMAX25
mov ESI,OFFSET NORMCALL
call DISPADDR
mov EBX,OFFSET TO_MSG
call NORMSTR
pop ESI
add ESI,7
push ESI
call CONVFROMAX25
mov ESI,OFFSET NORMCALL
call DISPADDR
;
; Display Time To Live number
;
mov EBX,OFFSET TTL_MSG
call NORMSTR
pop ESI
add ESI,7 ; Point to TTL counter
lodsb
call DISPLAY_BYTE_1
;
; DISPLAY CIRCUIT ID
;
MOV EBX,OFFSET CCT_MSG
CALL NORMSTR
LODSB
CALL BYTE_TO_HEX
LODSB
CALL BYTE_TO_HEX
INC ESI
INC ESI ; TO OPCODE
;-----------------------------------------------------------------------------;
; Determine type of Level 4 frame ;
;-----------------------------------------------------------------------------;
mov AL,[ESI]
MOV OPCODE,AL ; SAVE
AND AL,0FH ; Strip off flags
cmp AL,L4CREQ
jne NOT_L4CREQ
mov EBX,OFFSET CONN_REQ_MSG
call NORMSTR
MOV EBX,OFFSET WINDOW
CALL NORMSTR
INC ESI
LODSB ; WINDOW SIZE
CALL DISPLAY_BYTE_1
mov AL,' '
call PUTCHAR
PUSH ESI
call CONVFROMAX25
mov ESI,OFFSET NORMCALL
call DISPADDR
mov EBX,OFFSET AT_MSG
call NORMSTR
pop ESI
add ESI,7
PUSH ESI
call CONVFROMAX25
mov ESI,OFFSET NORMCALL
call DISPADDR
POP ESI
CMP FRAME_LENGTH,58
JE NOT_BPQ
;
; BPQ EXTENDED CON REQ - DISPLAY TIMEOUT
;
MOV EBX,OFFSET TIM_MSG
CALL NORMSTR
MOV AX,7[ESI] ; TIMEOUT
CALL DISPLAY_BYTE_1
;
NOT_BPQ:
JMP ADD_CR
NOT_L4CREQ:
cmp AL,L4CACK
jne NOT_L4CACK
TEST OPCODE,L4BUSY
JZ L4CRQ00
;
; BUSY RETURNED
;
MOV EBX,OFFSET CONN_NAK_MSG
CALL NORMSTR
JMP END_NETROM
L4CRQ00:
MOV EBX,OFFSET CONN_ACK_MSG
CALL NORMSTR
MOV EBX,OFFSET WINDOW
CALL NORMSTR
MOV AL,1[ESI] ; WINDOW SIZE
CALL DISPLAY_BYTE_1
MOV EBX,OFFSET MYCCT_MSG
CALL NORMSTR
MOV AL,-2[ESI]
CALL BYTE_TO_HEX
MOV AL,-1[ESI]
CALL BYTE_TO_HEX
JMP ADD_CR
NOT_L4CACK:
cmp AL,L4DREQ
jne NOT_L4DREQ
mov EBX,OFFSET DISC_REQ_MSG
call NORMSTR
JMP ADD_CR
NOT_L4DREQ:
cmp AL,L4DACK
jne NOT_L4DACK
mov EBX,OFFSET DISC_ACK_MSG
call NORMSTR
jmp add_cr
NOT_L4DACK:
cmp AL,L4INFO
jne NOT_L4INFO
mov EBX,OFFSET INFO_MSG
call NORMSTR
mov AL,-2[ESI] ; Get send sequence number
call DISPLAY_BYTE_1
mov AL,' '
call PUTCHAR
mov AL,'R'
call PUTCHAR
mov AL,-1[ESI] ; Get receive sequence number
call DISPLAY_BYTE_1
mov AL,'>'
call PUTCHAR
INC ESI ; TO DATA
MOV ECX,FRAME_LENGTH
sub ECX,20
CALL DOL4FLAGS
jmp DISPLAY_INFO
NOT_L4INFO:
cmp AL,L4IACK
jne NOT_L4IACK
mov EBX,OFFSET INFO_ACK_MSG
call NORMSTR
mov AL,-1[ESI] ; Get receive sequence number
call DISPLAY_BYTE_1
mov AL,'>'
call PUTCHAR
CALL DOL4FLAGS
JMP SHORT END_NETROM
NOT_L4IACK:
OR AL,AL
JNZ NOTIP
;
; TCP/IP DATAGRAM
;
mov EBX,OFFSET IP_MSG
call NORMSTR
;
INC ESI ; NOW POINTING TO IP HEADER
;
PUSH ESI
LEA ESI,IPSOURCE[ESI]
CALL PRINT4 ; PRINT IF ADDR IN 'DOTTED DECIMAL' FORMAT
POP ESI
MOV AL,'>'
CALL PUTCHAR
PUSH ESI
LEA ESI,IPDEST[ESI]
CALL PRINT4 ; PRINT IF ADDR IN 'DOTTED DECIMAL' FORMAT
MOV EBX,OFFSET LEN
CALL NORMSTR
POP ESI
MOV AL,BYTE PTR IPLENGTH[ESI]
CALL BYTE_TO_HEX
MOV AL,BYTE PTR IPLENGTH+1[ESI]
CALL BYTE_TO_HEX
MOV AL,20H
CALL PUTCHAR
MOV AL,IPPROTOCOL[ESI]
CALL DISPLAY_BYTE_1 ; DISPLAY PROTOCOL TYPE
; mov AL,CR
; call PUTCHAR
;
; MOV ECX,39 ; TESTING
;IPLOOP:
; lodsb
; CALL BYTE_TO_HEX
;
; LOOP IPLOOP
JMP ADD_CR
NOTIP:
mov EBX,OFFSET DUFF_NET_MSG
call NORMSTR
END_NETROM:
jmp add_cr
DOL4FLAGS:
;
; DISPLAY BUSY/NAK/MORE FLAGS
;
TEST OPCODE,L4BUSY
JZ L4F010
MOV AL,'B'
CALL PUTCHAR
L4F010:
TEST OPCODE,L4NAK
JZ L4F020
MOV AL,'N'
CALL PUTCHAR
L4F020:
TEST OPCODE,L4MORE
JZ L4F030
MOV AL,'M'
CALL PUTCHAR
L4F030:
RET
;----------------------------------------------------------------------------;
; Display ASCIIZ strings ;
;----------------------------------------------------------------------------;
NORMSTR:
MOV AL,[EBX]
INC EBX
cmp AL,NULL ; End of String ?
je NORMSTR_RET ; Yes
call PUTCHAR
jmp SHORT NORMSTR
NORMSTR_RET:
ret
;-----------------------------------------------------------------------------;
; Display sequence numbers ;
;-----------------------------------------------------------------------------;
DISPLAYSEQ:
and AL,7
add AL,30H
call PUTCHAR
ret
;-----------------------------------------------------------------------------;
; Display Callsign pointed to by SI ;
;-----------------------------------------------------------------------------;
DISPADDR:
jcxz DISPADDR_RET
LODS NORMCALL
call PUTCHAR
loop DISPADDR
DISPADDR_RET:
ret
PRINT4:
;
; DISPLAY IP ADDR IN DOTTED DECIMAL FORMAT
;
LODSB
CALL DISPLAY_BYTE_1
MOV AL,'.'
CALL PUTCHAR
LODSB
CALL DISPLAY_BYTE_1
MOV AL,'.'
CALL PUTCHAR
LODSB
CALL DISPLAY_BYTE_1
MOV AL,'.'
CALL PUTCHAR
LODSB
CALL DISPLAY_BYTE_1
RET
;-----------------------------------------------------------------------------;
; Convert byte in AL to nnn, nn or n format ;
;-----------------------------------------------------------------------------;
DISPLAY_BYTE_1:
cmp AL,100
jb TENS_1
mov AH,0
HUNDREDS_LOOP_1:
cmp AL,100
jb HUNDREDS_LOOP_END_1
sub AL,100
inc AH
jmp SHORT HUNDREDS_LOOP_1
HUNDREDS_LOOP_END_1:
push AX
mov AL,AH
add AL,30H
call PUTCHAR
pop AX
jmp SHORT TENS_PRINT_1
TENS_1:
cmp AL,10
jb UNITS_1
TENS_PRINT_1:
mov AH,0
TENS_LOOP_1:
cmp AL,10
jb TENS_LOOP_END_1
sub AL,10
inc AH
jmp SHORT TENS_LOOP_1
TENS_LOOP_END_1:
push AX
mov AL,AH
add AL,30H
call PUTCHAR
pop AX
UNITS_1:
add AL,30H
call PUTCHAR
ret
;-----------------------------------------------------------------------------;
; Convert byte in AL to nn format ;
;-----------------------------------------------------------------------------;
DISPLAY_BYTE_2:
cmp AL,100
jb TENS_2
sub AL,100
jmp SHORT DISPLAY_BYTE_2
TENS_2:
mov AH,0
TENS_LOOP_2:
cmp AL,10
jb TENS_LOOP_END_2
sub AL,10
inc AH
jmp SHORT TENS_LOOP_2
TENS_LOOP_END_2:
push AX
mov AL,AH
add AL,30H
call PUTCHAR
pop AX
UNITS_2:
add AL,30H
call PUTCHAR
ret
;-----------------------------------------------------------------------------;
; Convert byte in AL to Hex display ;
;-----------------------------------------------------------------------------;
BYTE_TO_HEX:
push AX
shr AL,1
shr AL,1
shr AL,1
shr AL,1
call NIBBLE_TO_HEX
pop AX
call NIBBLE_TO_HEX
ret
NIBBLE_TO_HEX:
and AL,0FH
cmp AL,10
jb LESS_THAN_10
add AL,7
LESS_THAN_10:
add AL,30H
call PUTCHAR
ret
CONVFROMAX25:
;
; CONVERT AX25 FORMAT CALL IN [SI] TO NORMAL FORMAT IN NORMCALL
; RETURNS LENGTH IN CX AND NZ IF LAST ADDRESS BIT IS SET
;
PUSH EDI ; SAVE BUFFER
PUSH ESI ; SAVE
MOV EDI,OFFSET NORMCALL
MOV ECX,10 ; MAX ALPHANUMERICS
MOV AL,20H
REP STOSB ; CLEAR IN CASE SHORT CALL
MOV EDI,OFFSET NORMCALL
MOV CL,6
CONVAX50:
LODSB
CMP AL,40H
JE CONVAX60 ; END IF CALL - DO SSID
SHR AL,1
STOSB
LOOP CONVAX50
CONVAX60:
POP ESI
ADD ESI,6 ; TO SSID
LODSB
MOV AH,AL ; SAVE FOR LAST BIT TEST
SHR AL,1
AND AL,0FH
JZ CONVAX90 ; NO SSID - FINISHED
;
MOV BYTE PTR [EDI],'-'
INC EDI
CMP AL,10
JB CONVAX70
SUB AL,10
MOV BYTE PTR [EDI],'1'
INC EDI
CONVAX70:
ADD AL,30H ; CONVERT TO DIGIT
STOSB
CONVAX90:
MOV ECX,EDI
SUB ECX,OFFSET NORMCALL
MOV NORMLEN,ECX ; SIGNIFICANT LENGTH
TEST AH,1 ; LAST BIT SET?
POP EDI
RET
HEXOUT:
PUSH AX
PUSH AX
sar al,1
sar al,1
sar al,1
sar al,1
call hexout1
pop ax
call hexout1
POP AX
ret
hexout1:
and al,0fh
cmp al,10
jl hexout5
add al,7
hexout5:
add al,30h
STOSB
;
ret
PUTCHAR:
STOSB
RET
_TEXT ENDS
;
END
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