- PRCSC4 ;WISC/LEM-ESIG MAINTENANCE ROUTINE ;5/20/93 9:13 AM
- V ;;5.1;IFCAP;;Oct 20, 2000
- ;Per VHA Directive 10-93-142, this routine should not be modified.
- ;ROUTINE FOR MAINTAINING FIELD 63 (LOG CODE CODE SHEETS ELEC.SIG.), FILE 410
- DECODE(LEVEL0) ;Extrinsic Function to return hashed electronic sig to readable form.
- ;returns "" if unsuccessful
- NEW RECORD,RECRD100,VERSION,PERSON,SIG,CHECKSUM
- ;get record and check version
- S RECORD=$G(^PRCS(410,LEVEL0,0)) I RECORD="" QUIT ""
- S RECRD100=$G(^PRCS(410,LEVEL0,100))
- S VERSION=$P(RECRD100,"^",9)
- S PERSON=+$P(RECRD100,"^",4)
- I VERSION'="",VERSION'=1 Q ""
- S SIG=$P(RECRD100,"^",5)
- D1 ;decode e signature for version 1
- S CHECKSUM=$$SUM^PRCUESIG(LEVEL0_"^"_$$STRING(RECRD100))
- QUIT $$DECODE^PRCUESIG(SIG,PERSON,CHECKSUM)
- ENCODE(LEVEL0,USERNUM,Y) ;Encode e signature for version 1 only
- ;Parameter passing entry point
- NEW RECORD,RECRD100,SIGBLOCK,CHECKSUM,OLDUSER
- ;get record
- S USERNUM=+USERNUM
- I USERNUM=0 S Y=-3 QUIT ;-3 no user num available
- S SIGBLOCK=$P($G(^VA(200,USERNUM,20)),"^",2)
- I SIGBLOCK="" S Y=-2 QUIT ;-2 no sigblock in file 200
- S RECORD=$G(^PRCS(410,LEVEL0,0))
- S RECRD100=$G(^PRCS(410,LEVEL0,100))
- I RECORD="" S Y=-1 QUIT ;-1 no transaction record
- I $P(RECRD100,"^",5)'="" S Y=-4 QUIT ;-4 cannot re-sign record
- S OLDUSER=+$P(RECRD100,"^",4)
- I OLDUSER=0 S $P(RECRD100,"^",4)=USERNUM
- I OLDUSER>0 S USERNUM=OLDUSER
- S:$P(RECRD100,"^",6)="" $P(RECRD100,"^",6)=$$NOW^PRCUESIG
- S CHECKSUM=$$SUM^PRCUESIG(LEVEL0_"^"_$$STRING(RECRD100))
- S $P(RECRD100,"^",5)=$$ENCODE^PRCUESIG(SIGBLOCK,USERNUM,CHECKSUM)
- S $P(RECRD100,"^",9,10)="1^"_$$SUM^PRCUESIG(SIGBLOCK)
- S ^PRCS(410,LEVEL0,100)=RECRD100
- S Y=1 QUIT
- REMOVE(LEVEL0) ;Entry point to remove e signature from record
- ;NOT an extrinsic function
- NEW RECRD100
- S RECRD100=$G(^PRCS(410,LEVEL0,100))
- S $P(RECRD100,"^",4,6)="^^"
- S $P(RECRD100,"^",10)=""
- S ^PRCS(410,LEVEL0,100)=RECRD100
- QUIT
- VERIFY(LEVEL0) ;extrinsic function to verify version 1 signature. Returns 1 if valid, 0 if not valid
- NEW RECRD100,VERSION,SIGBLOCK
- ;get record variables
- S RECRD100=$G(^PRCS(410,LEVEL0,100))
- S VERSION=$P(RECRD100,"^",9),SIGBLOCK=$P(RECRD100,"^",10)
- I VERSION_SIGBLOCK="" QUIT 1
- QUIT ($$SUM^PRCUESIG($$DECODE(LEVEL0))=SIGBLOCK)
- STRING(X100) ;Build String of critical fields
- NEW RECRD100,SIGBLOCK,CHECKSUM,OLDUSER
- Q $P(X100,"^",6)_"^"_$P(X100,"^",7)_"^"_$P(X100,"^",8)
- --- Routine Detail --- with STRUCTURED ROUTINE LISTING ---[H[J[2J[HPRCSC4 2467 printed Mar 13, 2025@21:22:05 Page 2
- PRCSC4 ;WISC/LEM-ESIG MAINTENANCE ROUTINE ;5/20/93 9:13 AM
- V ;;5.1;IFCAP;;Oct 20, 2000
- +1 ;Per VHA Directive 10-93-142, this routine should not be modified.
- +2 ;ROUTINE FOR MAINTAINING FIELD 63 (LOG CODE CODE SHEETS ELEC.SIG.), FILE 410
- DECODE(LEVEL0) ;Extrinsic Function to return hashed electronic sig to readable form.
- +1 ;returns "" if unsuccessful
- +2 NEW RECORD,RECRD100,VERSION,PERSON,SIG,CHECKSUM
- +3 ;get record and check version
- +4 SET RECORD=$GET(^PRCS(410,LEVEL0,0))
- IF RECORD=""
- QUIT ""
- +5 SET RECRD100=$GET(^PRCS(410,LEVEL0,100))
- +6 SET VERSION=$PIECE(RECRD100,"^",9)
- +7 SET PERSON=+$PIECE(RECRD100,"^",4)
- +8 IF VERSION'=""
- IF VERSION'=1
- QUIT ""
- +9 SET SIG=$PIECE(RECRD100,"^",5)
- D1 ;decode e signature for version 1
- +1 SET CHECKSUM=$$SUM^PRCUESIG(LEVEL0_"^"_$$STRING(RECRD100))
- +2 QUIT $$DECODE^PRCUESIG(SIG,PERSON,CHECKSUM)
- ENCODE(LEVEL0,USERNUM,Y) ;Encode e signature for version 1 only
- +1 ;Parameter passing entry point
- +2 NEW RECORD,RECRD100,SIGBLOCK,CHECKSUM,OLDUSER
- +3 ;get record
- +4 SET USERNUM=+USERNUM
- +5 ;-3 no user num available
- IF USERNUM=0
- SET Y=-3
- QUIT
- +6 SET SIGBLOCK=$PIECE($GET(^VA(200,USERNUM,20)),"^",2)
- +7 ;-2 no sigblock in file 200
- IF SIGBLOCK=""
- SET Y=-2
- QUIT
- +8 SET RECORD=$GET(^PRCS(410,LEVEL0,0))
- +9 SET RECRD100=$GET(^PRCS(410,LEVEL0,100))
- +10 ;-1 no transaction record
- IF RECORD=""
- SET Y=-1
- QUIT
- +11 ;-4 cannot re-sign record
- IF $PIECE(RECRD100,"^",5)'=""
- SET Y=-4
- QUIT
- +12 SET OLDUSER=+$PIECE(RECRD100,"^",4)
- +13 IF OLDUSER=0
- SET $PIECE(RECRD100,"^",4)=USERNUM
- +14 IF OLDUSER>0
- SET USERNUM=OLDUSER
- +15 if $PIECE(RECRD100,"^",6)=""
- SET $PIECE(RECRD100,"^",6)=$$NOW^PRCUESIG
- +16 SET CHECKSUM=$$SUM^PRCUESIG(LEVEL0_"^"_$$STRING(RECRD100))
- +17 SET $PIECE(RECRD100,"^",5)=$$ENCODE^PRCUESIG(SIGBLOCK,USERNUM,CHECKSUM)
- +18 SET $PIECE(RECRD100,"^",9,10)="1^"_$$SUM^PRCUESIG(SIGBLOCK)
- +19 SET ^PRCS(410,LEVEL0,100)=RECRD100
- +20 SET Y=1
- QUIT
- REMOVE(LEVEL0) ;Entry point to remove e signature from record
- +1 ;NOT an extrinsic function
- +2 NEW RECRD100
- +3 SET RECRD100=$GET(^PRCS(410,LEVEL0,100))
- +4 SET $PIECE(RECRD100,"^",4,6)="^^"
- +5 SET $PIECE(RECRD100,"^",10)=""
- +6 SET ^PRCS(410,LEVEL0,100)=RECRD100
- +7 QUIT
- VERIFY(LEVEL0) ;extrinsic function to verify version 1 signature. Returns 1 if valid, 0 if not valid
- +1 NEW RECRD100,VERSION,SIGBLOCK
- +2 ;get record variables
- +3 SET RECRD100=$GET(^PRCS(410,LEVEL0,100))
- +4 SET VERSION=$PIECE(RECRD100,"^",9)
- SET SIGBLOCK=$PIECE(RECRD100,"^",10)
- +5 IF VERSION_SIGBLOCK=""
- QUIT 1
- +6 QUIT ($$SUM^PRCUESIG($$DECODE(LEVEL0))=SIGBLOCK)
- STRING(X100) ;Build String of critical fields
- +1 NEW RECRD100,SIGBLOCK,CHECKSUM,OLDUSER
- +2 QUIT $PIECE(X100,"^",6)_"^"_$PIECE(X100,"^",7)_"^"_$PIECE(X100,"^",8)
