A2osX/BIN/USERMOD.S.txt

NEW
  AUTO 3,1
			.LIST OFF
			.OP	65C02
			.OR	$2000
			.TF bin/usermod
*--------------------------------------
USER.MAX	.EQ 16
PASS.MAX	.EQ 64
*--------------------------------------
			.INB inc/macros.i
			.INB inc/a2osx.i
*--------------------------------------
* Zero Page Segment, up to 32 bytes
*--------------------------------------
				.DUMMY
				.OR ZPBIN
ZS.START
ArgIndex		.BS 1
ArgUsername		.BS 1
ZPStrPtr		.BS 2
ZPTmpPtr		.BS 2
ZS.END			.ED
*--------------------------------------
*			File Header (16 Bytes)
*--------------------------------------
CS.START		cld
				jmp (.1,x)
				.DA #$61				6502,Level 1 (65c02)
				.DA #1					BIN Layout Version 1
				.DA #0					S.PS.F.EVENT
				.DA #0
				.DA CS.END-CS.START		Code Size (without Constants)
				.DA DS.END-DS.START		Data Segment Size
				.DA #64					Stack Size
				.DA #ZS.END-ZS.START	Zero Page Size
				.DA 0
*--------------------------------------
* Relocation Table
*--------------------------------------
.1				.DA CS.INIT
				.DA CS.RUN
				.DA CS.DOEVENT
				.DA	CS.QUIT
L.MSG.USAGE		.DA MSG.USAGE
L.MSG.CRLF		.DA MSG.CRLF
L.MSG.BS		.DA MSG.BS
J.CS.RUN.CheckArg
				.DA CS.RUN.CheckArg.C
				.DA CS.RUN.CheckArg.D
				.DA CS.RUN.CheckArg.P
				.DA CS.RUN.CheckArg.S
				.DA 0
*--------------------------------------
* Called once at process creation
* Put code for loading LIB here
*--------------------------------------
CS.INIT			clc
				rts
*--------------------------------------
* Called until exit with CS
* if RUN exits with CC, RN entered again
*--------------------------------------
CS.RUN			ldy #S.PS.ARGC
				lda (pPS),y
				beq .9

				jsr CS.RUN.CheckArg
				bcs .99

				>PUSHW pData
				>SYSCALL PutPW
				bcs .99

				lda #0
				sec
				rts

.9				>PUSHW L.MSG.USAGE
				>PUSHBI 0
				>SYSCALL PrintF
				lda #E.SYN
				sec
.99				rts
*--------------------------------------
CS.RUN.CheckArg	inc ArgIndex
				lda ArgIndex
				>SYSCALL ArgV
				bcs .8

				>STYA ZPStrPtr
				lda (ZPStrPtr)
				cmp #'-'
				bne .4

				lda ArgUsername
				beq CS.RUN.CheckArg.9

				ldy #1
				lda (ZPStrPtr),y

				ldx #OptionCnt-1

.2				cmp OptionList,x
				beq .3
				dex
				bpl .2

				lda #E.SYN
				sec
				rts

.3				txa
				and #$fe
				tax
				jmp (J.CS.RUN.CheckArg,x)
*--------------------------------------
.4				lda ArgUsername
				bne CS.RUN.CheckArg.9

				lda ArgIndex
				sta ArgUsername
				>SYSCALL ArgV
				>PUSHYA
				>PUSHW pData
				>SYSCALL GetPWName
				bcs .9

				bra CS.RUN.CheckArg

.8				lda ArgUsername
				beq CS.RUN.CheckArg.9

				clc
				rts

.9				lda #E.IUSR
				sec
				rts
CS.RUN.CheckArg.9
				lda #E.SYN
				sec
				rts
*--------------------------------------
CS.RUN.CheckArg.P
				inc ArgIndex
				lda ArgIndex
				>SYSCALL ArgV
				bcs CS.RUN.CheckArg.9
				>PUSHYA
				>PUSHEA.G S.PW.PASSWD
				>SYSCALL MD5
				jmp CS.RUN.CheckArg
*--------------------------------------
CS.RUN.CheckArg.C
				inc ArgIndex
				lda ArgIndex
				>SYSCALL ArgV
				bcs CS.RUN.CheckArg.9
				ldx #S.PW.GECOS
				bra CS.RUN.CheckArg.Next
*--------------------------------------
CS.RUN.CheckArg.D
				inc ArgIndex
				lda ArgIndex
				>SYSCALL ArgV
				bcs CS.RUN.CheckArg.9
				ldx #S.PW.DIR
				bra CS.RUN.CheckArg.Next
*--------------------------------------
CS.RUN.CheckArg.S
				inc ArgIndex
				lda ArgIndex
				>SYSCALL ArgV
				bcs CS.RUN.CheckArg.9

				ldx #S.PW.SHELL
CS.RUN.CheckArg.Next
				>STYA ZPStrPtr

*				clc
				txa
				adc pData
				sta ZPTmpPtr
				lda pData+1
				adc #0
				sta ZPTmpPtr+1

				ldy #$ff

.1				iny
				lda (ZPStrPtr),y
				sta (ZPTmpPtr),y
				beq .8

				cpy #64
				bne .1

				lda #0
				sta (ZPTmpPtr),y

.8				jmp CS.RUN.CheckArg
*--------------------------------------
CS.RUN.MkDir	>PUSHEA.G S.PW.DIR
				>PUSHWI S.STAT.MODE.RO+S.STAT.MODE.RG+S.STAT.MODE.FU
				>SYSCALL MKDir

				rts
*--------------------------------------
* Called if option S.PS.F.EVENT enabled in Header
* Timer Event : every 10th seconds
*--------------------------------------
CS.DOEVENT		sec
				rts
*--------------------------------------
* Called once, when RUN exited with CS
* Put code for unloading LIB here
*--------------------------------------
CS.QUIT			clc
				rts
*--------------------------------------
CS.END
*--------------------------------------
OptionList		.AS "CcDdPpSs"
OptionCnt		.EQ *-OptionList
*--------------------------------------
* Initialized DATA
*--------------------------------------
MSG.USAGE		.AS "Usage : USERMOD username\r\n"
				.AS "   -c : Comment (GECOS)\r\n"
				.AS "   -d : Home Directory\r\n"
				.AS "   -p : Password\r\n"
				.AS "   -s : Shell"
MSG.CRLF		.AZ "\r\n"
MSG.BS			.DA #C.BS,#C.SPACE,#C.BS,#0
*--------------------------------------
				.DUMMY
				.OR 0
DS.START
PW				.BS S.PW
DS.END			.ED
*--------------------------------------
MAN
SAVE usr/src/bin/usermod.s
ASM