A2osX/BIN/DNS.S.txt

PR#3
PREFIX /A2OSX.BUILD
NEW
INC 1
AUTO 6
				.LIST ON
				.OP	65C02
				.OR	$2000
				.TF BIN/DNS
*--------------------------------------
				.INB INC/MACROS.I
				.INB INC/A2OSX.I
				.INB INC/KERNEL.I
				.INB INC/LIBSTR.I
				.INB INC/LIBTCPIP.I
*--------------------------------------
ZPPTR1			.EQ ZPBIN
*--------------------------------------
* Main entry point
*--------------------------------------
* Code signature and INIT table
*--------------------------------------
* CLD 			$D8
* JMP (*,x)		$7C
* 				#JMPTABLE
*				/JMPTABLE
*--------------------------------------
CS.START		cld
				jmp (.1,x)
.1				.DA CS.INIT
				.DA CS.RUN
				.DA CS.EVENT		
				.DA	CS.QUIT
L.LIBSTR		.DA LIBSTR
L.LIBTCPIP		.DA LIBTCPIP
L.SSCANF.IP		.DA SSCANF.IP
L.IP			.DA IP
L.MSG0			.DA MSG0
L.MSG1			.DA MSG1
				.DA 0
				.DA CS.END-CS.START		Code Length To Relocate
				.DA DS.END-DS.START		Data Segment to Allocate
*--------------------------------------
CS.INIT			stz hHostName
				stz hIP
				
				>LIBLOADP L.LIBSTR
				sta hLIBSTR

				>LIBLOADP L.LIBTCPIP
				sta hLIBTCPIP
				
				ldy #S.PS.hARGS
				lda (pPsContext),y
				bne CS.INIT.ADD
				jmp CS.INIT.DUMP

CS.INIT.ADD		>PUSHA
				>PUSHBI $20				Push SEP=' '
				>PUSHBI 1				Push 1 for getting hostname
				>SYSCALL SYS.PStrGetTkn
				bcs .91
				sta hHostName
				
				ldy #S.PS.hARGS
				lda (pPsContext),y
				>PUSHA
				>PUSHBI $20				Push SEP=' '
				>PUSHBI 2				Push 2 for getting IP
				>SYSCALL SYS.PStrGetTkn
.91				bcs .9

				sta hIP
				>PUSHW L.IP
				>PUSHW L.SSCANF.IP
				lda hIP
				>SYSCALL SYS.GetMemPtrA
				>PUSHYA
				>LIBCALL hLIBSTR,LIBSTR.SSCANF
				bcs .9
				
				>PUSHWI 1800			default TTL
				>PUSHW L.IP
				>PUSHB hHostName
				>LIBCALL hLIBTCPIP,LIBTCPIP.DNS.ADD
				bcs .99
				
				lda #0					tell TSKMGR that all done ok, but 
				sec						we do not want to stay in memory
				rts

.9				lda #SYSMGR.ERRSYN
				sec
.99				rts
				
CS.INIT.DUMP	>LIBCALL hLIBTCPIP,LIBTCPIP.DNS.GETCACHE
				>STYA ZPPTR1
				>PUSHW L.MSG0
				>LIBCALL hLIBSTR,LIBSTR.PRINTF

				ldx #K.DNSCACHE.SIZE			
.1				phx
				lda (ZPPTR1)
				beq .2

				ldy #S.DNSCACHE.IP+3
				lda (ZPPTR1),y
				>PUSHA
				dey
				lda (ZPPTR1),y
				>PUSHA
				dey
				lda (ZPPTR1),y
				>PUSHA
				dey
				lda (ZPPTR1),y
				>PUSHA

				ldy #S.DNSCACHE.TTL
				lda (ZPPTR1),y
				pha
				iny
				lda (ZPPTR1),y
				ply
				>PUSHYA
				
				ldy #S.DNSCACHE.hNAME
				lda (ZPPTR1),y
				>SYSCALL SYS.GetMemPtrA
				>PUSHYA

				>PUSHB (ZPPTR1)
				
				>PUSHW L.MSG1
				>LIBCALL hLIBSTR,LIBSTR.PRINTF

.2				lda ZPPTR1
				clc
				adc #S.DNSCACHE
				sta ZPPTR1
				bcc .3
				inc ZPPTR1+1
.3				plx
				dex
				bne .1		

				lda #0					tell TSKMGR that all done ok, but 
				sec						we do not want to stay in memory
				rts
*--------------------------------------
CS.RUN
CS.EVENT		clc
				rts
*--------------------------------------
CS.QUIT			lda hHostName
				beq .1
				>SYSCALL SYS.FreeMemA
.1				lda hIP
				beq .2
				>SYSCALL SYS.FreeMemA
.2				lda hLIBTCPIP
				>SYSCALL SYS.UnloadLibA
				lda hLIBSTR
				>SYSCALL SYS.UnloadLibA
				clc
				rts
*--------------------------------------
CS.END			
LIBSTR			>PSTRING "libstr.o"
LIBTCPIP		>PSTRING "libtcpip.o"
SSCANF.IP		>PSTRING "%d.%d.%d.%d"
MSG0			>CSTRING "STS Hostname                         TTL   IP Address\n"
MSG1			>CSTRING "$%h %32S %05D %d.%d.%d.%d\n"
DS.START
hLIBSTR			.BS	1
hLIBTCPIP		.BS 1
hHostName		.BS 1
hIP				.BS 1
IP				.BS 4
DS.END
MAN
SAVE BIN/DNS.S
ASM