source: trunk/athena/bin/lpr/pac.c @ 7908

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1983 Regents of the University of California.\n\
 All rights reserved.\n";
#endif not lint

#ifndef lint
static char sccsid[] = "@(#)pac.c       5.2 (Berkeley) 10/30/85";
#endif not lint

/*
 * Do Printer accounting summary.
 * Currently, usage is
 *      pac [-Pprinter] [-pprice] [-s] [-r] [-c] [-m] [user ...]
 * to print the usage information for the named people.
 */

/* Currently "pac" runs only off information in /etc/printcap.
 * If you want it to query Hesiod, #define HESIOD-PAC here.
 */

#include <stdio.h>
#include <strings.h>
#include "lp.local.h"

char    *printer;                       /* printer name */
char    *acctfile;                      /* accounting file (input data) */
char    *sumfile;                       /* summary file */
float   price = 0.02;                   /* cost per page (or what ever) */
int     allflag = 1;                    /* Get stats on everybody */
int     sort;                           /* Sort by cost */
int     summarize;                      /* Compress accounting file */
int     reverse;                        /* Reverse sort order */
int     hcount;                         /* Count of hash entries */
int     errs;
int     mflag = 0;                      /* disregard machine names */
int     pflag = 0;                      /* 1 if -p on cmd line */
int     price100;                       /* per-page cost in 100th of a cent */
int     pgetnum();
#ifdef HESIOD_PAC
char    alibuf[BUFSIZ/2];               /* buffer for printer alias */
#endif /* HESIOD-PAC */

/*
 * Grossness follows:
 *  Names to be accumulated are hashed into the following
 *  table.
 */

#define HSHSIZE 97                      /* Number of hash buckets */

struct hent {
        struct  hent *h_link;           /* Forward hash link */
        char    *h_name;                /* Name of this user */
        float   h_feetpages;            /* Feet or pages of paper */
        int     h_count;                /* Number of runs */
};

struct  hent    *hashtab[HSHSIZE];      /* Hash table proper */
struct  hent    *enter();
struct  hent    *lookup();

#define NIL     ((struct hent *) 0)     /* The big zero */

double  atof();
char    *getenv();
char    *pgetstr();

main(argc, argv)
        char **argv;
{
        register FILE *acct;
        register char *cp;

        while (--argc) {
                cp = *++argv;
                if (*cp++ == '-') {
                        switch(*cp++) {
                        case 'P':
                                /*
                                 * Printer name.
                                 */
                                printer = cp;
                                continue;

                        case 'p':
                                /*
                                 * get the price.
                                 */
                                price = atof(cp);
                                pflag = 1;
                                continue;

                        case 's':
                                /*
                                 * Summarize and compress accounting file.
                                 */
                                summarize++;
                                continue;

                        case 'c':
                                /*
                                 * Sort by cost.
                                 */
                                sort++;
                                continue;

                        case 'm':
                                /*
                                 * disregard machine names for each user
                                 */
                                mflag = 1;
                                continue;

                        case 'r':
                                /*
                                 * Reverse sorting order.
                                 */
                                reverse++;
                                continue;

                        default:
fprintf(stderr,
    "usage: pac [-Pprinter] [-pprice] [-s] [-c] [-r] [-m] [user ...]\n");
                                exit(1);
                        }
                }
                (void) enter(--cp);
                allflag = 0;
        }
        if (printer == NULL) {
          if ((printer = getenv("PRINTER")) == NULL) printer = DEFLP;
        }
        if (!chkprinter()) {
                printf("pac: unknown printer %s\n", printer);
                exit(2);
        }

        if ((acct = fopen(acctfile, "r")) == NULL) {
                perror(acctfile);
                exit(1);
        }
        account(acct);
        fclose(acct);
        if ((acct = fopen(sumfile, "r")) != NULL) {
                account(acct);
                fclose(acct);
        }
        if (summarize)
                rewrite();
        else
                dumpit();
        exit(errs);
}

/*
 * Read the entire accounting file, accumulating statistics
 * for the users that we have in the hash table.  If allflag
 * is set, then just gather the facts on everyone.
 * Note that we must accomodate both the active and summary file
 * formats here.
 * Host names are ignored if the -m flag is present.
 */

account(acct)
        register FILE *acct;
{
        char linebuf[BUFSIZ];
        double t;
        register char *cp, *cp2;
        register struct hent *hp;
        register int ic;

        while (fgets(linebuf, BUFSIZ, acct) != NULL) {
                cp = linebuf;
                while (any(*cp, " t\t"))
                        cp++;
                t = atof(cp);
                while (any(*cp, ".0123456789"))
                        cp++;
                while (any(*cp, " \t"))
                        cp++;
                for (cp2 = cp; !any(*cp2, " \t\n"); cp2++)
                        ;
                ic = atoi(cp2);
                *cp2 = '\0';
                if (mflag && strchr(cp, ':'))
                    cp = strchr(cp, ':') + 1;
                hp = lookup(cp);
                if (hp == NIL) {
                        if (!allflag)
                                continue;
                        hp = enter(cp);
                }
                hp->h_feetpages += t;
                if (ic)
                        hp->h_count += ic;
                else
                        hp->h_count++;
        }
}

/*
 * Sort the hashed entries by name or footage
 * and print it all out.
 */

dumpit()
{
        struct hent **base;
        register struct hent *hp, **ap;
        register int hno, c, runs;
        float feet;
        int qucmp();

        hp = hashtab[0];
        hno = 1;
        base = (struct hent **) calloc(sizeof hp, hcount);
        for (ap = base, c = hcount; c--; ap++) {
                while (hp == NIL)
                        hp = hashtab[hno++];
                *ap = hp;
                hp = hp->h_link;
        }
        qsort(base, hcount, sizeof hp, qucmp);
        printf("  Login               pages/feet   runs    price\n");
        feet = 0.0;
        runs = 0;
        for (ap = base, c = hcount; c--; ap++) {
                hp = *ap;
                runs += hp->h_count;
                feet += hp->h_feetpages;
                printf("%-24s %7.2f %4d   $%6.2f\n", hp->h_name,
                    hp->h_feetpages, hp->h_count, hp->h_feetpages * price);
        }
        if (allflag) {
                printf("\n");
                printf("%-24s %7.2f %4d   $%6.2f\n", "total", feet, 
                    runs, feet * price);
        }
}

/*
 * Rewrite the summary file with the summary information we have accumulated.
 */

rewrite()
{
        register struct hent *hp;
        register int i;
        register FILE *acctf;

        if ((acctf = fopen(sumfile, "w")) == NULL) {
                perror(sumfile);
                errs++;
                return;
        }
        for (i = 0; i < HSHSIZE; i++) {
                hp = hashtab[i];
                while (hp != NULL) {
                        fprintf(acctf, "%7.2f\t%s\t%d\n", hp->h_feetpages,
                            hp->h_name, hp->h_count);
                        hp = hp->h_link;
                }
        }
        fflush(acctf);
        if (ferror(acctf)) {
                perror(sumfile);
                errs++;
        }
        fclose(acctf);
        if ((acctf = fopen(acctfile, "w")) == NULL)
                perror(acctfile);
        else
                fclose(acctf);
}

/*
 * Hashing routines.
 */

/*
 * Enter the name into the hash table and return the pointer allocated.
 */

struct hent *
enter(name)
        char name[];
{
        register struct hent *hp;
        register int h;

        if ((hp = lookup(name)) != NIL)
                return(hp);
        h = hash(name);
        hcount++;
        hp = (struct hent *) calloc(sizeof *hp, 1);
        hp->h_name = (char *) calloc(sizeof(char), strlen(name)+1);
        strcpy(hp->h_name, name);
        hp->h_feetpages = 0.0;
        hp->h_count = 0;
        hp->h_link = hashtab[h];
        hashtab[h] = hp;
        return(hp);
}

/*
 * Lookup a name in the hash table and return a pointer
 * to it.
 */

struct hent *
lookup(name)
        char name[];
{
        register int h;
        register struct hent *hp;

        h = hash(name);
        for (hp = hashtab[h]; hp != NIL; hp = hp->h_link)
                if (strcmp(hp->h_name, name) == 0)
                        return(hp);
        return(NIL);
}

/*
 * Hash the passed name and return the index in
 * the hash table to begin the search.
 */

hash(name)
        char name[];
{
        register int h;
        register char *cp;

        for (cp = name, h = 0; *cp; h = (h << 2) + *cp++)
                ;
        return((h & 0x7fffffff) % HSHSIZE);
}

/*
 * Other stuff
 */

any(ch, str)
        char str[];
{
        register int c = ch;
        register char *cp = str;

        while (*cp)
                if (*cp++ == c)
                        return(1);
        return(0);
}

/*
 * The qsort comparison routine.
 * The comparison is ascii collating order
 * or by feet of typesetter film, according to sort.
 */

qucmp(left, right)
        struct hent **left, **right;
{
        register struct hent *h1, *h2;
        register int r;

        h1 = *left;
        h2 = *right;
        if (sort)
                r = h1->h_feetpages < h2->h_feetpages ? -1 : h1->h_feetpages > 
h2->h_feetpages;
        else
                r = strcmp(h1->h_name, h2->h_name);
        return(reverse ? -r : r);
}

/*
 * Perform lookup for printer name or abbreviation --
 */
chkprinter()
{
        static char buf[BUFSIZ/2];
        char b[BUFSIZ];
        int stat;
        char *bp = buf;

#ifdef HESIOD_PAC
        if ((stat = pgetent(b, printer)) <= 0) {
                if (pralias(alibuf, printer))
                        printer = alibuf;
                if ((stat = hpgetent(b, printer)) < 1)
                        return(0);
        }
#else
        if ((stat = pgetent(b, printer)) < 0) {
                printf("pac: can't open printer description file\n");
                exit(3);
        } else if (stat == 0)
                return(0);
#endif /* HESIOD_PAC */
        if ((acctfile = pgetstr("af", &bp)) == NULL) {
                printf("accounting not enabled for printer %s\n", printer);
                exit(2);
        }
        if (!pflag && (price100 = pgetnum("pc")) > 0)
                price = price100/10000.0;
        sumfile = (char *) calloc(sizeof(char), strlen(acctfile)+5);
        if (sumfile == NULL) {
                perror("pac");
                exit(1);
        }
        strcpy(sumfile, acctfile);
        strcat(sumfile, "_sum");
        return(1);
}