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decuslib10-11
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43,50545/rsmpsw.for
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C RENBR(RSMPSW/MERGES PASSWORD AND STUDENT LISTS)
C
C DONALD BARTH, YALE SCHOOL OF MANAGEMENT
C
C The RSMPSW program merges a list of possible
C passwords and a list of student names to produce a
C file of assigned numbers and passwords for use by
C either the RESUME program or the JOBS program. Each
C line in the resulting file contains a number, a
C password, an exclamation point and the student's
C name.
C
C The file of student names must contain only 1 name
C per line. The names are copied into the resulting
C file in the same order as they appear in the original
C file. It is suggested that these names should have
C been sorted in alphabetical order before they are
C processed by the RSMPSW program.
C
C The file of possible passwords can have the words
C wrapped around into lines of up to 80 characters
C each. Any text file of reasonable length can be used
C to define the passwords. Only passwords containing
C from 4 to 8 characters each are used.
C
C The first approximately 200 passwords in the original
C file are stored in a hopper. The passwords are then
C selected from this hopper at random. When the hopper
C is empty, the next group of passwords from the
C orignal file are placed into the hopper. Once all of
C the passwords in the original file have been used,
C the hopper is filled with passwords from the start of
C the original file again. Duplicates are discarded
C each time the hopper is filled, but a password in 1
C filling of the hopper might have appeared in a
C previous filling of the hopper.
C
C LTRSTR = ARRAY HOLDING MANY PASSWORDS EACH CONTAINING
C MAXLTR LETTERS
C LTRNAM = ARRAY INTO WHICH STUDENT NAMES ARE READ
C LTRLIN = ARRAY HOLDING SINGLE LINE FROM PASSWORD FILE
DIMENSION LTRSTR(2000),LTRNAM(40),LTRLIN(80)
C
C FILE NAMES
DOUBLE PRECISION FILONE,FILTWO,FILTHR,FILFOU
C
C LTRABC = ARRAY CONTAINING UPPER CASE LETTERS A-Z
C LWRABC = ARRAY CONTAINING LOWER CASE LETTERS A-Z
DIMENSION LTRABC(26),LWRABC(26)
C
C ARRAY CONTAINING UPPER CASE LETTERS A THROUGH Z
DATA LTRABC /1HA,1HB,1HC,1HD,1HE,1HF,1HG,1HH,1HI,1HJ,
1 1HK,1HL,1HM,1HN,1HO,1HP,1HQ,1HR,1HS,1HT,1HU,1HV,1HW,
2 1HX,1HY,1HZ/
C
C ARRAY CONTAINING LOWER CASE LETTERS A THROUGH Z
DATA LWRABC /1Ha,1Hb,1Hc,1Hd,1He,1Hf,1Hg,1Hh,1Hi,1Hj,
1 1Hk,1Hl,1Hm,1Hn,1Ho,1Hp,1Hq,1Hr,1Hs,1Ht,1Hu,1Hv,1Hw,
2 1Hx,1Hy,1Hz/
C
C MINLTR = MINIMUM NUMBER OF LETTERS IN SINGLE PASSWORD
C MAXLTR = MAXIMUM NUMBER OF LETTERS IN SINGLE PASSWORD
DATA MINLTR,MAXLTR/4,8/
C
C UNIT NUMBERS
C ITTY = UNIT NUMBER FOR TERMINAL
C IDISK = UNIT NUMBER FROM WHICH READ STUDENT NAMES
C JDISK = UNIT NUMBER FROM WHICH READ TEXT CONTAINING
C THE PASSWORDDS
C KDISK = UNIT NUMBER TO WHICH IS WRITTEN FILE TO BE
C USED BY PASSWORD CHECKER IN JOBS OR RESUME
C PROGRAM
C LDISK = UNIT NUMBER TO WHICH IS WRITTEN FILE TO BE
C USED FOR SPLICING NAMES AND PASSWORDS INTO
C FORM LETTERS USING FROFF WORD PROCESSOR
DATA ITTY,IDISK,JDISK,KDISK,LDISK/5,1,20,21,22/
C
C LMTSTR = TOTAL NUMBER OF LETTERS IN ALL PASSWORDS IN
C HOPPER
C LMTWID = NUMBER OF CHARACTERS IN SINGLE LINE IN TEXT
C FILE
C LMTNAM = NUMBER OF LETTERS IN A STUDENT NAME
DATA LMTSTR,LMTWID,LMTNAM/2000,80,40/
C
C VARIOUS SINGLE CHARACTERS
C LTRSPA = THE SPACE OR BLANK
C LTREQU = THE EQUAL SIGN
C LTREXC = THE EXCLAMATION POINT
C LTRMIN = THE MINUS OR HYPHEN
C LTRAPO = THE APOSTROPHE
DATA LTRSPA,LTREQU,LTREXC,LTRMIN,LTRAPO/
1 1H ,1H=,1H!,1H-,1H'/
C
C TELL USER WHAT PROGRAM THIS IS
WRITE(ITTY,1)
1 FORMAT(' RSMPSW'/
1' Merges password list and student name list'/)
C
C OPEN FILE CONTAINING STUDENT NAMES
2 WRITE(ITTY,3)
3 FORMAT(' File containing list of student names? ',$)
READ(ITTY,4)FILONE
4 FORMAT(1A10)
OPEN(UNIT=IDISK,FILE=FILONE,ACCESS='SEQIN',ERR=5)
GO TO 7
5 WRITE(ITTY,6)
6 FORMAT(' Cannot open file')
GO TO 2
7 CONTINUE
C
C OPEN FILE CONTAINING PASSWORDS
8 WRITE(ITTY,9)
9 FORMAT(' File containing list of passwords? ',$)
READ(ITTY,10)FILTWO
10 FORMAT(1A10)
OPEN(UNIT=JDISK,FILE=FILTWO,ACCESS='SEQIN',ERR=11)
GO TO 13
11 WRITE(ITTY,12)
12 FORMAT(' Cannot open file')
GO TO 8
13 CONTINUE
C
C OPEN OUTPUT FILE TO BE READ BY JOBS OR RESUME PROGRAM
14 WRITE(ITTY,15)
15 FORMAT(' Output file for password checker? ',$)
READ(ITTY,16)FILTHR
16 FORMAT(1A10)
OPEN(UNIT=KDISK,FILE=FILTHR,ACCESS='SEQOUT',ERR=17)
GO TO 19
17 WRITE(ITTY,18)
18 FORMAT(' Cannot open file')
GO TO 14
19 CONTINUE
C
C OPEN OUTPUT FILE TO BE USED FOR FORM LETTERS
20 WRITE(ITTY,21)
21 FORMAT(' Output file for word processor? ',$)
READ(ITTY,22)FILFOU
22 FORMAT(1A10)
OPEN(UNIT=LDISK,FILE=FILFOU,ACCESS='SEQOUT',ERR=23)
GO TO 25
23 WRITE(ITTY,24)
24 FORMAT(' Cannot open file')
GO TO 20
25 CONTINUE
C
C GET KERNEL FOR RANDOM NUMBER GENERATOR
WRITE(ITTY,26)
26 FORMAT(' Kernel for random numbers? ',$)
READ(ITTY,27)KERNEL
27 FORMAT(I)
C
C FIND OUT HOW MANY INITIAL PASSWORDS TO REJECT
WRITE(ITTY,28)
28 FORMAT(' Discard how many initial passwords? ',$)
READ(ITTY,27)IREJCT
C
C FIND OUT WHAT FRACTION OF PASSWORDS TO USE
WRITE(ITTY,29)
29 FORMAT(' On average, Use 1 password out of how many? ',$)
READ(ITTY,27)JREJCT
C
C FIND OUT FIRST STUDENT NUMBER AND INCREMENT
WRITE(ITTY,30)
30 FORMAT(' Number to assign to first student? ',$)
READ(ITTY,27)INITAL
IF(INITAL.LT.0)INITAL=0
WRITE(ITTY,31)
31 FORMAT(' Increment each student number how much? ',$)
READ(ITTY,27)INCRMT
IF(INCRMT.LE.0)INCRMT=1
C
C INITIALIZE RANDOM NUMBER SEQUENCE
CALL SETRAN(KERNEL)
C
C SET INITIAL CONDITIONS
C KNTNAM = TOTAL NUMBER OF STUDENT NAMES PROCESSED
C KNTWRD = NUMBER OF PASSWORDS NOW IN HOPPER
C KNTTTL = TOTAL NUMBER OF PASSWORDS EVER PLACED IN
C HOPPER
C LMTWRD = MAXIMIM NUMBER OF PASSWORDS IN HOPPER
C LMTSTR = MAXIMUM NUMBER OF CHARACTERS IN HOPPER
C MAXLTR = MAXIMUM LENGTH OF ANY ONE PASSWORD
C MAXWRD = LOCATION OF RIGHT END OF LAST WORD FROM TEXT
C FILE
C KNTOPN = NUMBER OF TIMES TEXT FILE WAS READ
C NEEDED = NUMBER OF PASSWORDS WHICH COULD NOT BE
C REJECTED AT END OF LAST HOPPER
KNTNAM=0
KNTWRD=0
KNTTTL=0
LMTWRD=LMTSTR/MAXLTR
MAXWRD=LMTWID
KNTOPN=1
NEEDED=0
C
C GET NEXT STUDENT NAME
32 READ(IDISK,33,END=65)LTRNAM
33 FORMAT(40A1)
MAXNAM=LMTNAM+1
34 MAXNAM=MAXNAM-1
IF(MAXNAM.LE.0)GO TO 32
IF(LTRNAM(MAXNAM).EQ.LTRSPA)GO TO 34
IF(MAXNAM.NE.1)GO TO 35
IF(LTRNAM(1).EQ.LTREQU)GO TO 65
35 KNTNAM=KNTNAM+1
C
C GET NEXT LINE OF PASSWORDS
IF(KNTWRD.NE.0)GO TO 58
GO TO 40
36 READ(JDISK,37,END=39)LTRLIN
37 FORMAT(80A1)
MAXWRD=0
C
C TEST FOR LINE CONTAINING ONLY = MARKING END OF FILE
IF(LTRLIN(1).NE.LTREQU)GO TO 40
ITEST=1
38 ITEST=ITEST+1
IF(ITEST.GT.LMTWID)GO TO 39
IF(LTRLIN(ITEST).EQ.LTRSPA)GO TO 38
GO TO 40
C
C END OF PASSWORD FILE ENCOUNTERED
39 MAXWRD=LMTWID
CLOSE(UNIT=JDISK)
IF(KNTTTL.EQ.0)GO TO 69
IF(LMTWRD.GT.KNTTTL)LMTWRD=KNTTTL
KNTOPN=KNTOPN+1
OPEN(UNIT=JDISK,FILE=FILTWO,ACCESS='SEQIN')
IF(KNTWRD.LT.LMTWRD)GO TO 36
GO TO 58
C
C FIND FIRST LETTER OF PASSWORD
40 MINWRD=MAXWRD
KREJCT=0
41 MINWRD=MINWRD+1
IF(MINWRD.GT.LMTWID)GO TO 36
LTRNOW=LTRLIN(MINWRD)
IF(LTRNOW.EQ.LTRSPA)GO TO 41
DO 42 LETTER=1,26
IF(LTRNOW.EQ.LTRABC(LETTER))GO TO 44
IF(LTRNOW.NE.LWRABC(LETTER))GO TO 42
LTRLIN(MINWRD)=LTRABC(LETTER)
GO TO 44
42 CONTINUE
IF(LTRNOW.EQ.LTRMIN)GO TO 43
IF(LTRNOW.EQ.LTRAPO)GO TO 43
GO TO 41
43 KREJCT=1
44 CONTINUE
C
C FIND FINAL LETTER OF PASSWORD
MAXWRD=MINWRD
45 MAXWRD=MAXWRD+1
IF(MAXWRD.GT.LMTWID)GO TO 48
LTRNOW=LTRLIN(MAXWRD)
IF(LTRNOW.EQ.LTRSPA)GO TO 48
DO 46 LETTER=1,26
IF(LTRNOW.EQ.LTRABC(LETTER))GO TO 45
IF(LTRNOW.NE.LWRABC(LETTER))GO TO 46
LTRLIN(MAXWRD)=LTRABC(LETTER)
GO TO 45
46 CONTINUE
IF(LTRNOW.EQ.LTRMIN)GO TO 47
IF(LTRNOW.EQ.LTRAPO)GO TO 47
GO TO 48
47 KREJCT=1
GO TO 45
48 LENGTH=MAXWRD-MINWRD
MAXWRD=MAXWRD-1
IF(LENGTH.LT.MINLTR)GO TO 40
IF(LENGTH.GT.MAXLTR)GO TO 40
IF(KREJCT.NE.0)GO TO 40
C
C EXCLUDE DUPLICATE PASSWORDS
IF(KNTWRD.EQ.0)GO TO 53
KTEST=0
DO 52 I=1,KNTWRD
ITEST=MINWRD
JTEST=KTEST
KTEST=KTEST+MAXLTR
DO 50 J=1,MAXLTR
JTEST=JTEST+1
IF(ITEST.LE.MAXWRD)GO TO 49
IF(LTRSTR(JTEST).NE.LTRSPA)GO TO 52
GO TO 51
49 IF(LTRSTR(JTEST).NE.LTRLIN(ITEST))GO TO 52
ITEST=ITEST+1
50 CONTINUE
51 GO TO 40
52 CONTINUE
53 CONTINUE
C
C STORE PASSWORD IN HOPPER
KNTTTL=KNTTTL+1
KNTWRD=KNTWRD+1
ISTORE=MAXLTR*KNTWRD-MAXLTR+1
DO 54 I=1,MAXLTR
LTRSTR(ISTORE)=LTRSPA
IF(MINWRD.LE.MAXWRD)LTRSTR(ISTORE)=LTRLIN(MINWRD)
ISTORE=ISTORE+1
MINWRD=MINWRD+1
54 CONTINUE
IF(KNTWRD.LT.LMTWRD)GO TO 40
C
C DISCARD INITIAL PASSWORDS IF NECESSARY
IF(IREJCT.LE.0)GO TO 57
KREJCT=IREJCT
IF(KREJCT.GT.KNTWRD)KREJCT=KNTWRD
IREJCT=IREJCT-KREJCT
IMOVE=MAXLTR*KNTWRD
KNTWRD=KNTWRD-KREJCT
JMOVE=0
KMOVE=MAXLTR*KREJCT
55 JMOVE=JMOVE+1
KMOVE=KMOVE+1
IF(KMOVE.GT.IMOVE)GO TO 56
LTRSTR(JMOVE)=LTRSTR(KMOVE)
GO TO 55
56 GO TO 40
57 CONTINUE
C
C PICK PASSWORD AT RANDOM FROM HOPPER
C RAN RETURNS RANDOM VALUE IN RANGE 0.0 THROUGH 1.0
58 IRANDM=1.0+(RAN(0)*FLOAT(KNTWRD))
IF(IRANDM.LE.0)IRANDM=1
IF(IRANDM.GT.KNTWRD)IRANDM=KNTWRD
IFINAL=MAXLTR*IRANDM
IFIRST=IFINAL-MAXLTR+1
IF(INITAL.GT.999999)INITAL=0
WRITE(KDISK,59)INITAL,(LTRSTR(I),I=IFIRST,IFINAL),
1 LTREXC,(LTRNAM(I),I=1,MAXNAM)
59 FORMAT(1I6,1X,100A1)
WRITE(LDISK,60)(LTRNAM(I),I=1,MAXNAM)
60 FORMAT(100A1)
WRITE(LDISK,61)INITAL,(LTRSTR(I),I=IFIRST,IFINAL)
61 FORMAT(1I6,1X,100A1)
INITAL=INITAL+INCRMT
C
C STORE THE TOP PASSWORD IN PLACE OF THE ONE USED
NEEDED=NEEDED+JREJCT
62 KNTWRD=KNTWRD-1
NEEDED=NEEDED-1
IF(KNTWRD.EQ.0)GO TO 64
JMOVE=(IRANDM*MAXLTR)-MAXLTR+1
KMOVE=(KNTWRD*MAXLTR)+1
DO 63 IMOVE=1,MAXLTR
LTRSTR(JMOVE)=LTRSTR(KMOVE)
JMOVE=JMOVE+1
KMOVE=KMOVE+1
63 CONTINUE
C
C REJECT FRACTION OF PASSWORDS IN HOPPER
IF(NEEDED.LE.0)GO TO 64
IRANDM=1.0+(RAN(0)*FLOAT(KNTWRD))
IF(IRANDM.LE.0)IRANDM=1
IF(IRANDM.GT.KNTWRD)IRANDM=KNTWRD
GO TO 62
64 GO TO 32
C
C MARK THE END OF THE OUTPUT FILES
65 WRITE(KDISK,66)
66 FORMAT('=')
CLOSE(UNIT=KDISK)
WRITE(LDISK,67)
67 FORMAT('.END FILE')
CLOSE(UNIT=LDISK)
C
C TYPE FINAL SUMMARY ON TERMINAL
WRITE(ITTY,68)KNTNAM,LMTWRD,KNTTTL,KNTWRD,KNTOPN
68 FORMAT(
1' Number of students: ',1I5/
2' Hopper size: ',1I5/
3' Total passwords scanned: ',1I5/
4' Passwords left in hopper:',1I5/
5' Times text file read: ',1I5)
GO TO 71
69 WRITE(ITTY,70)
70 FORMAT(' File does not contain any passwords that ',
1'can be used')
GO TO 71
71 STOP
END