A2osX/SBIN/LOGIN.S.txt
2019-10-03 08:25:27 +02:00

460 lines
8.7 KiB
Plaintext
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

NEW
AUTO 3,1
.LIST OFF
.OP 65C02
.OR $2000
.TF SBIN/LOGIN
*--------------------------------------
.INB INC/MACROS.I
.INB INC/A2OSX.I
.INB INC/KERNEL.I
.INB INC/MLI.I
.INB INC/LIBCRYPT.I
*--------------------------------------
.DUMMY
.OR ZPBIN
ZS.START
ZPUsrID .BS 1
ZPhBuf .BS 1
ZPBufPtr .BS 2
ZPRetryCnt .BS 1
ZPbValidUser .BS 1
ZPUID .BS 1
ZPhGetLine .BS 1
ZPGetLinePtr .BS 2
ZPbGetLineSecret .BS 1
ZPbEsc .BS 1
ZPGetLineLen .BS 1
ZPGetLineMax .BS 1
ZPhPW .BS 1
ZPPWPtr .BS 2
ZPhSID .BS 1
ZPhFile .BS 1
ZPStrPtr .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 #S.PS.F.EVENT S.PS.F
.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.NOAUTH .DA MSG.NOAUTH
L.LIBCRYPT .DA LIBCRYPT
L.MSG.LOGIN .DA MSG.LOGIN
L.MSG.PASSWORD .DA MSG.PASSWORD
L.MSG.BAD .DA MSG.BAD
L.MSG.CRLF .DA MSG.CRLF
L.MSG.BS .DA MSG.BS
L.SESSION.ROOT .DA SESSION.ROOT
L.ETCISSUE .DA ETCISSUE
L.ETCMOTD .DA ETCMOTD
L.SHELL .DA SHELL
.DA 0
*--------------------------------------
CS.INIT clc
CS.INIT.RTS rts
*--------------------------------------
CS.RUN >LDYAI 33 Enough for HASH
>SYSCALL getmem
bcs CS.INIT.RTS
>STYA ZPGetLinePtr
stx ZPhGetLine
>LDYA L.ETCISSUE
jsr CS.RUN.DUMPFILE
>PUSHWZ Dry Run, no output
* lda #0 ROOT user
>SYSCALL GetPWUID
bcc CS.RUN.AUTH
*--------------------------------------
CS.RUN.NOAUTH >PUSHBI 0
>LDYA L.MSG.NOAUTH
>SYSCALL printf
bcs .9
jsr CS.RUN.SetRootSession
bcs .9
jmp CS.RUN.EXEC
.9 rts
*--------------------------------------
CS.RUN.AUTH >LDYA L.LIBCRYPT
>SYSCALL LoadLib
bcs CS.INIT.RTS
sta hLIBCRYPT
lda #3
sta ZPRetryCnt
.1 >PUSHBI 0
>LDYA L.MSG.LOGIN
>SYSCALL printf
bcs .9
lda #16
clc
jsr CS.RUN.GetLine
bcs .9
>PUSHWZ Dry Run
>LDYA ZPGetLinePtr
>SYSCALL GetPWName
ror ZPbValidUser
sta ZPUID
>PUSHBI 0
>LDYA L.MSG.PASSWORD
>SYSCALL printf
bcs .9
lda #32
sec
jsr CS.RUN.GetLine
bcs .9
>PUSHBI 0
>LDYA L.MSG.CRLF
>SYSCALL printf
bcs .9
jsr CS.RUN.CHECKPWD
bcs .8
jsr CS.RUN.SetUserSession
bcs .9
jmp CS.RUN.EXEC
.8 >PUSHBI 0
>LDYA L.MSG.BAD
>SYSCALL printf
bcs .9
dec ZPRetryCnt
beq .99
jmp .1
.99 lda #E.IUSR
sec
.9 rts
*--------------------------------------
CS.RUN.SetRootSession
>LDYA L.SESSION.ROOT
>STYA ZPStrPtr
>LDYAI SESSION.ROOT.Size
>SYSCALL getmem
bcs .9
>STYA pSession
stx ZPhSID
ldy #SESSION.ROOT.Size-1
.1 lda (ZPStrPtr),y
sta (pSession),y
dey
bpl .1
* clc
.9 rts
*--------------------------------------
CS.RUN.SetUserSession
ldx #S.SESSION.NAME P+UID+GID
ldy #S.PW.NAME-1
jsr CS.RUN.AddStrLen NAME len
inx
ldy #S.PW.GECOS-1
jsr CS.RUN.AddStrLen GECOS len
inx
ldy #S.PW.DIR-1
jsr CS.RUN.AddStrLen DIR len
inx
ldy #S.PW.SHELL-1
jsr CS.RUN.AddStrLen SHELL len
txa
tay
lda #0
>SYSCALL getmem
bcs .9
>STYA pSession
>STYA ZPStrPtr
stx ZPhSID
* clc
ldy #S.PW.GID
lda (ZPPWPtr),y
tax
bne .5
sec
.5 ldy #S.PW.UID
lda (ZPPWPtr),y
bne .6
sec
.6 lda #0
ror
jsr CS.RUN.AddByte PRIV
lda (ZPPWPtr),y
jsr CS.RUN.AddByte UID
txa
jsr CS.RUN.AddByte GID
ldy #S.PW.NAME
jsr CS.RUN.AddStr
ldy #S.PW.GECOS
jsr CS.RUN.AddStr
ldy #S.PW.DIR
jsr CS.RUN.AddStr
ldy #S.PW.SHELL
jsr CS.RUN.AddStr
lda #0
jsr CS.RUN.AddByte
clc
.9 rts
*--------------------------------------
CS.RUN.CHECKPWD rol ZPbValidUser
bcs CS.RUN.CHECK.9
>LDYAI S.PW
>SYSCALL getmem
bcs CS.RUN.CHECK.9
>STYA ZPPWPtr
stx ZPhPW
>PUSHYA
lda ZPUID
>SYSCALL GetPWUID
bcs CS.RUN.CHECK.9
>PUSHW ZPGetlinePtr
>PUSHW ZPGetlinePtr
>LIBCALL hLIBCRYPT,LIBCRYPT.MD5
lda ZPPWPtr
clc
adc #S.PW.PASSWD
tay
lda ZPPWPtr+1
adc /S.PW.PASSWD
>PUSHYA
>LDYA ZPGetlinePtr
>SYSCALL strcmp
CS.RUN.CHECK.9 rts
*--------------------------------------
CS.RUN.EXEC ldx #1
.1 lda S.Table.hSession-1,x
beq .2
inx
cpx #K.USR.MAX+1
bne .1
lda #E.OOH
* sec
rts
.2 stx ZPUsrID
txa
ldy #S.PS.hSID
sta (pPS),y
lda ZPhSID
ldx ZPUsrID
sta S.Table.hSession-1,x
ldy #S.PS.hStdIn
lda (pPS),y
sta S.Table.hFILE-1,x
>LDYA L.ETCMOTD
jsr CS.RUN.DumpFile
jsr CS.CLEANUP
>PUSHBI S.PS.F.HOLD
>LDYA L.SHELL
>SYSCALL ExecL
bcs .9
>SLEEP
ldx ZPUsrID
lda S.Table.hSession-1,x
stz S.Table.hSession-1,x
stz S.Table.hFILE-1,x
>SYSCALL freemem
sec
.9 rts
*--------------------------------------
CS.RUN.AddStrLen
.1 inx
iny
lda (ZPPWPtr),y
bne .1
rts
*--------------------------------------
CS.RUN.AddStr lda (ZPPWPtr),y
jsr CS.RUN.AddByte
iny
tax
bne CS.RUN.AddStr
rts
*--------------------------------------
CS.RUN.AddByte sta (ZPStrPtr)
inc ZPStrPtr
bne .8
inc ZPStrPtr+1
.8 rts
*--------------------------------------
CS.RUN.GetLine sta ZPGetLineMax
ror ZPbGetLineSecret
stz ZPGetLineLen
stz ZPbEsc
.1 >SYSCALL getchar
bcs .9
bit ZPbEsc
bpl .11
* clc
ror ZPbEsc
cmp #'D'
bne .1
bra .3
.11 cmp #C.DEL
beq .3
cmp #C.SPACE
bcc .2
ldy ZPGetLineLen
cpy ZPGetLineMax
beq .1
sta (ZPGetLinePtr),y
inc ZPGetLineLen
bit ZPbGetLineSecret
bmi .1
>SYSCALL putchar
bra .1
.2 cmp #3 Ctrl-C
beq .9
cmp #C.CR
beq .8
cmp #C.ESC
bne .1
* sec
ror ZPbEsc
bra .1
.3 ldy ZPGetLineLen
beq .1
dec ZPGetLineLen
bit ZPbGetLineSecret
bmi .1
>PUSHBI 0
>LDYA L.MSG.BS
>SYSCALL printf
bra .1
.8 ldy ZPGetLineLen
lda #0
sta (ZPGetLinePtr),y
clc
.9 rts
*--------------------------------------
CS.RUN.DumpFile pha
>PUSHWZ Aux type
>PUSHBI S.FI.T.TXT
>PUSHBI O.RDONLY+O.TEXT
pla
>SYSCALL FOpen
bcs .9
stx ZPhFile
>LDYAI 256
>SYSCALL getmem
bcs .99
>STYA ZPBufPtr
stx ZPhBuf
.1 >PUSHWI 256
>PUSHW ZPBufPtr
lda ZPhFile
>SYSCALL fgets
bcs .7
>LDYA ZPBufPtr
>SYSCALL ExpandStr
bcc .2
.99 php
pha
jsr .8
pla
plp
.9 rts
.2 phx
>SYSCALL puts
pla
>SYSCALL freemem
bra .1
.7 lda ZPhBuf
>SYSCALL freemem
.8 lda ZPhFile
>SYSCALL fclose
rts
*--------------------------------------
CS.DOEVENT
sec
rts
*--------------------------------------
CS.QUIT lda hLIBCRYPT
beq CS.CLEANUP
>SYSCALL UnloadLib
CS.CLEANUP lda ZPhGetLine
beq .1
stz ZPhGetLine
>SYSCALL freemem
.1 lda ZPhPW
beq .8
stz ZPhPW
>SYSCALL freemem
.8 clc
rts
*--------------------------------------
CS.END
*--------------------------------------
LIBCRYPT .AZ "libcrypt"
hLIBCRYPT .BS 1
MSG.NOAUTH .AS "\r\n\r\nA2osX-Login:No ETC/PASSWD file present, Logged as ROOT.\r\n"
.AS "Consider adding ROOT password with USERADD command.\r\n"
MSG.CRLF .AZ "\r\n"
MSG.LOGIN .AZ "\r\nlogin:"
MSG.PASSWORD .AZ "\r\npassword:"
MSG.BAD .AZ "Bad user or password\r\n"
MSG.BS .DA #C.BS,#C.SPACE,#C.BS,#0
ETCISSUE .AZ "${ROOT}ETC/ISSUE"
ETCMOTD .AZ "${ROOT}ETC/MOTD"
SHELL .AZ "${SHELL}"
*--------------------------------------
SESSION.ROOT .DA #S.SESSION.P.ROOT
.DA #0 UID
.DA #0 GID
.AZ "ROOT" NAME
.AZ "Root User" GECOS
.AZ "${ROOT}ROOT/" DIR
.AZ "${ROOT}BIN/SH" SHELL
SESSION.ROOT.Size .EQ *-SESSION.ROOT
*--------------------------------------
.DUMMY
.OR 0
DS.START
DS.END
.ED
*--------------------------------------
MAN
SAVE USR/SRC/SBIN/LOGIN.S
ASM