pac.c revision 27635 
1/*
2 * Copyright (c) 1983, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 *    must display the following acknowledgement:
16 *	This product includes software developed by the University of
17 *	California, Berkeley and its contributors.
18 * 4. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#ifndef lint
36static char copyright[] =
37"@(#) Copyright (c) 1983, 1993\n\
38	The Regents of the University of California.  All rights reserved.\n";
39#endif /* not lint */
40
41#ifndef lint
42static char sccsid[] = "@(#)pac.c	8.1 (Berkeley) 6/6/93";
43#endif /* not lint */
44
45/*
46 * Do Printer accounting summary.
47 * Currently, usage is
48 *	pac [-Pprinter] [-pprice] [-s] [-r] [-c] [-m] [user ...]
49 * to print the usage information for the named people.
50 */
51
52#include <sys/param.h>
53
54#include <dirent.h>
55#include <stdlib.h>
56#include <stdio.h>
57#include <string.h>
58#include "lp.h"
59#include "lp.local.h"
60
61static char	*acctfile;	/* accounting file (input data) */
62static int	 allflag = 1;	/* Get stats on everybody */
63static int	 errs;
64static int	 hcount;	/* Count of hash entries */
65static int	 mflag = 0;	/* disregard machine names */
66static int	 pflag = 0;	/* 1 if -p on cmd line */
67static float	 price = 0.02;	/* cost per page (or what ever) */
68static long	 price100;	/* per-page cost in 100th of a cent */
69static int	 reverse;	/* Reverse sort order */
70static int	 sort;		/* Sort by cost */
71static char	*sumfile;	/* summary file */
72static int	 summarize;	/* Compress accounting file */
73
74uid_t	uid, euid;
75
76/*
77 * Grossness follows:
78 *  Names to be accumulated are hashed into the following
79 *  table.
80 */
81
82#define	HSHSIZE	97			/* Number of hash buckets */
83
84struct hent {
85	struct	hent *h_link;		/* Forward hash link */
86	char	*h_name;		/* Name of this user */
87	float	h_feetpages;		/* Feet or pages of paper */
88	int	h_count;		/* Number of runs */
89};
90
91static struct	hent	*hashtab[HSHSIZE];	/* Hash table proper */
92
93static void	account __P((FILE *));
94static int	any __P((int, char []));
95static int	chkprinter __P((char *));
96static void	dumpit __P((void));
97static int	hash __P((char []));
98static struct	hent *enter __P((char []));
99static struct	hent *lookup __P((char []));
100static int	qucmp __P((const void *, const void *));
101static void	rewrite __P((void));
102
103int
104main(argc, argv)
105	int argc;
106	char **argv;
107{
108	register FILE *acct;
109	register char *cp;
110
111	euid = geteuid();	/* these aren't used in pac(1) */
112	uid = getuid();
113	while (--argc) {
114		cp = *++argv;
115		if (*cp++ == '-') {
116			switch(*cp++) {
117			case 'P':
118				/*
119				 * Printer name.
120				 */
121				printer = cp;
122				continue;
123
124			case 'p':
125				/*
126				 * get the price.
127				 */
128				price = atof(cp);
129				pflag = 1;
130				continue;
131
132			case 's':
133				/*
134				 * Summarize and compress accounting file.
135				 */
136				summarize++;
137				continue;
138
139			case 'c':
140				/*
141				 * Sort by cost.
142				 */
143				sort++;
144				continue;
145
146			case 'm':
147				/*
148				 * disregard machine names for each user
149				 */
150				mflag = 1;
151				continue;
152
153			case 'r':
154				/*
155				 * Reverse sorting order.
156				 */
157				reverse++;
158				continue;
159
160			default:
161fprintf(stderr,
162    "usage: pac [-Pprinter] [-pprice] [-s] [-c] [-r] [-m] [user ...]\n");
163				exit(1);
164			}
165		}
166		(void) enter(--cp);
167		allflag = 0;
168	}
169	if (printer == NULL && (printer = getenv("PRINTER")) == NULL)
170		printer = DEFLP;
171	if (!chkprinter(printer)) {
172		printf("pac: unknown printer %s\n", printer);
173		exit(2);
174	}
175
176	if ((acct = fopen(acctfile, "r")) == NULL) {
177		perror(acctfile);
178		exit(1);
179	}
180	account(acct);
181	fclose(acct);
182	if ((acct = fopen(sumfile, "r")) != NULL) {
183		account(acct);
184		fclose(acct);
185	}
186	if (summarize)
187		rewrite();
188	else
189		dumpit();
190	exit(errs);
191}
192
193/*
194 * Read the entire accounting file, accumulating statistics
195 * for the users that we have in the hash table.  If allflag
196 * is set, then just gather the facts on everyone.
197 * Note that we must accomodate both the active and summary file
198 * formats here.
199 * Host names are ignored if the -m flag is present.
200 */
201static void
202account(acct)
203	register FILE *acct;
204{
205	char linebuf[BUFSIZ];
206	double t;
207	register char *cp, *cp2;
208	register struct hent *hp;
209	register int ic;
210
211	while (fgets(linebuf, BUFSIZ, acct) != NULL) {
212		cp = linebuf;
213		while (any(*cp, " \t"))
214			cp++;
215		t = atof(cp);
216		while (any(*cp, ".0123456789"))
217			cp++;
218		while (any(*cp, " \t"))
219			cp++;
220		for (cp2 = cp; !any(*cp2, " \t\n"); cp2++)
221			;
222		ic = atoi(cp2);
223		*cp2 = '\0';
224		if (mflag && strchr(cp, ':'))
225		    cp = strchr(cp, ':') + 1;
226		hp = lookup(cp);
227		if (hp == NULL) {
228			if (!allflag)
229				continue;
230			hp = enter(cp);
231		}
232		hp->h_feetpages += t;
233		if (ic)
234			hp->h_count += ic;
235		else
236			hp->h_count++;
237	}
238}
239
240/*
241 * Sort the hashed entries by name or footage
242 * and print it all out.
243 */
244static void
245dumpit()
246{
247	struct hent **base;
248	register struct hent *hp, **ap;
249	register int hno, c, runs;
250	float feet;
251
252	hp = hashtab[0];
253	hno = 1;
254	base = (struct hent **) calloc(sizeof hp, hcount);
255	for (ap = base, c = hcount; c--; ap++) {
256		while (hp == NULL)
257			hp = hashtab[hno++];
258		*ap = hp;
259		hp = hp->h_link;
260	}
261	qsort(base, hcount, sizeof hp, qucmp);
262	printf("  Login               pages/feet   runs    price\n");
263	feet = 0.0;
264	runs = 0;
265	for (ap = base, c = hcount; c--; ap++) {
266		hp = *ap;
267		runs += hp->h_count;
268		feet += hp->h_feetpages;
269		printf("%-24s %7.2f %4d   $%6.2f\n", hp->h_name,
270		    hp->h_feetpages, hp->h_count, hp->h_feetpages * price);
271	}
272	if (allflag) {
273		printf("\n");
274		printf("%-24s %7.2f %4d   $%6.2f\n", "total", feet,
275		    runs, feet * price);
276	}
277}
278
279/*
280 * Rewrite the summary file with the summary information we have accumulated.
281 */
282static void
283rewrite()
284{
285	register struct hent *hp;
286	register int i;
287	register FILE *acctf;
288
289	if ((acctf = fopen(sumfile, "w")) == NULL) {
290		perror(sumfile);
291		errs++;
292		return;
293	}
294	for (i = 0; i < HSHSIZE; i++) {
295		hp = hashtab[i];
296		while (hp != NULL) {
297			fprintf(acctf, "%7.2f\t%s\t%d\n", hp->h_feetpages,
298			    hp->h_name, hp->h_count);
299			hp = hp->h_link;
300		}
301	}
302	fflush(acctf);
303	if (ferror(acctf)) {
304		perror(sumfile);
305		errs++;
306	}
307	fclose(acctf);
308	if ((acctf = fopen(acctfile, "w")) == NULL)
309		perror(acctfile);
310	else
311		fclose(acctf);
312}
313
314/*
315 * Hashing routines.
316 */
317
318/*
319 * Enter the name into the hash table and return the pointer allocated.
320 */
321
322static struct hent *
323enter(name)
324	char name[];
325{
326	register struct hent *hp;
327	register int h;
328
329	if ((hp = lookup(name)) != NULL)
330		return(hp);
331	h = hash(name);
332	hcount++;
333	hp = (struct hent *) calloc(sizeof *hp, 1);
334	hp->h_name = (char *) calloc(sizeof(char), strlen(name)+1);
335	strcpy(hp->h_name, name);
336	hp->h_feetpages = 0.0;
337	hp->h_count = 0;
338	hp->h_link = hashtab[h];
339	hashtab[h] = hp;
340	return(hp);
341}
342
343/*
344 * Lookup a name in the hash table and return a pointer
345 * to it.
346 */
347
348static struct hent *
349lookup(name)
350	char name[];
351{
352	register int h;
353	register struct hent *hp;
354
355	h = hash(name);
356	for (hp = hashtab[h]; hp != NULL; hp = hp->h_link)
357		if (strcmp(hp->h_name, name) == 0)
358			return(hp);
359	return(NULL);
360}
361
362/*
363 * Hash the passed name and return the index in
364 * the hash table to begin the search.
365 */
366static int
367hash(name)
368	char name[];
369{
370	register int h;
371	register char *cp;
372
373	for (cp = name, h = 0; *cp; h = (h << 2) + *cp++)
374		;
375	return((h & 0x7fffffff) % HSHSIZE);
376}
377
378/*
379 * Other stuff
380 */
381static int
382any(ch, str)
383	int ch;
384	char str[];
385{
386	register int c = ch;
387	register char *cp = str;
388
389	while (*cp)
390		if (*cp++ == c)
391			return(1);
392	return(0);
393}
394
395/*
396 * The qsort comparison routine.
397 * The comparison is ascii collating order
398 * or by feet of typesetter film, according to sort.
399 */
400static int
401qucmp(a, b)
402	const void *a, *b;
403{
404	register struct hent *h1, *h2;
405	register int r;
406
407	h1 = *(struct hent **)a;
408	h2 = *(struct hent **)b;
409	if (sort)
410		r = h1->h_feetpages < h2->h_feetpages ?
411		    -1 : h1->h_feetpages > h2->h_feetpages;
412	else
413		r = strcmp(h1->h_name, h2->h_name);
414	return(reverse ? -r : r);
415}
416
417/*
418 * Perform lookup for printer name or abbreviation --
419 */
420static int
421chkprinter(s)
422	register char *s;
423{
424	int stat;
425
426	if ((stat = cgetent(&bp, printcapdb, s)) == -2) {
427		printf("pac: can't open printer description file\n");
428		exit(3);
429	} else if (stat == -1)
430		return(0);
431	else if (stat == -3)
432		fatal("potential reference loop detected in printcap file");
433
434	if (cgetstr(bp, "af", &acctfile) == -1) {
435		printf("accounting not enabled for printer %s\n", printer);
436		exit(2);
437	}
438	if (!pflag && (cgetnum(bp, "pc", &price100) == 0))
439		price = price100/10000.0;
440	sumfile = (char *) calloc(sizeof(char), strlen(acctfile)+5);
441	if (sumfile == NULL) {
442		perror("pac");
443		exit(1);
444	}
445	strcpy(sumfile, acctfile);
446	strcat(sumfile, "_sum");
447	return(1);
448}
449