xref: /freebsd/usr.sbin/lpr/common_source/common.c (revision 39beb93c3f8bdbf72a61fda42300b5ebed7390c8)
1 /*
2  * Copyright (c) 1983, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  * (c) UNIX System Laboratories, Inc.
5  * All or some portions of this file are derived from material licensed
6  * to the University of California by American Telephone and Telegraph
7  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8  * the permission of UNIX System Laboratories, Inc.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. All advertising materials mentioning features or use of this software
19  *    must display the following acknowledgement:
20  *	This product includes software developed by the University of
21  *	California, Berkeley and its contributors.
22  * 4. Neither the name of the University nor the names of its contributors
23  *    may be used to endorse or promote products derived from this software
24  *    without specific prior written permission.
25  *
26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36  * SUCH DAMAGE.
37  */
38 
39 #if 0
40 #ifndef lint
41 static char sccsid[] = "@(#)common.c	8.5 (Berkeley) 4/28/95";
42 #endif /* not lint */
43 #endif
44 
45 #include "lp.cdefs.h"		/* A cross-platform version of <sys/cdefs.h> */
46 __FBSDID("$FreeBSD$");
47 
48 #include <sys/param.h>
49 #include <sys/stat.h>
50 #include <sys/time.h>
51 #include <sys/types.h>
52 
53 #include <ctype.h>
54 #include <dirent.h>
55 #include <errno.h>
56 #include <fcntl.h>
57 #include <stdio.h>
58 #include <stdlib.h>
59 #include <string.h>
60 #include <unistd.h>
61 
62 #include "lp.h"
63 #include "lp.local.h"
64 #include "pathnames.h"
65 
66 /*
67  * Routines and data common to all the line printer functions.
68  */
69 char	line[BUFSIZ];
70 const char	*progname;		/* program name */
71 
72 extern uid_t	uid, euid;
73 
74 static int compar(const void *_p1, const void *_p2);
75 
76 /*
77  * isdigit() takes a parameter of 'int', but expect values in the range
78  * of unsigned char.  Define a wrapper which takes a value of type 'char',
79  * whether signed or unsigned, and ensure it ends up in the right range.
80  */
81 #define	isdigitch(Anychar) isdigit((u_char)(Anychar))
82 
83 /*
84  * Getline reads a line from the control file cfp, removes tabs, converts
85  *  new-line to null and leaves it in line.
86  * Returns 0 at EOF or the number of characters read.
87  */
88 int
89 getline(FILE *cfp)
90 {
91 	register int linel = 0;
92 	register char *lp = line;
93 	register int c;
94 
95 	while ((c = getc(cfp)) != '\n' && (size_t)(linel+1) < sizeof(line)) {
96 		if (c == EOF)
97 			return(0);
98 		if (c == '\t') {
99 			do {
100 				*lp++ = ' ';
101 				linel++;
102 			} while ((linel & 07) != 0 && (size_t)(linel+1) <
103 			    sizeof(line));
104 			continue;
105 		}
106 		*lp++ = c;
107 		linel++;
108 	}
109 	*lp++ = '\0';
110 	return(linel);
111 }
112 
113 /*
114  * Scan the current directory and make a list of daemon files sorted by
115  * creation time.
116  * Return the number of entries and a pointer to the list.
117  */
118 int
119 getq(const struct printer *pp, struct jobqueue *(*namelist[]))
120 {
121 	register struct dirent *d;
122 	register struct jobqueue *q, **queue;
123 	size_t arraysz, entrysz, nitems;
124 	struct stat stbuf;
125 	DIR *dirp;
126 	int statres;
127 
128 	seteuid(euid);
129 	if ((dirp = opendir(pp->spool_dir)) == NULL) {
130 		seteuid(uid);
131 		return (-1);
132 	}
133 	if (fstat(dirp->dd_fd, &stbuf) < 0)
134 		goto errdone;
135 	seteuid(uid);
136 
137 	/*
138 	 * Estimate the array size by taking the size of the directory file
139 	 * and dividing it by a multiple of the minimum size entry.
140 	 */
141 	arraysz = (stbuf.st_size / 24);
142 	queue = (struct jobqueue **)malloc(arraysz * sizeof(struct jobqueue *));
143 	if (queue == NULL)
144 		goto errdone;
145 
146 	nitems = 0;
147 	while ((d = readdir(dirp)) != NULL) {
148 		if (d->d_name[0] != 'c' || d->d_name[1] != 'f')
149 			continue;	/* daemon control files only */
150 		seteuid(euid);
151 		statres = stat(d->d_name, &stbuf);
152 		seteuid(uid);
153 		if (statres < 0)
154 			continue;	/* Doesn't exist */
155 		entrysz = sizeof(struct jobqueue) - sizeof(q->job_cfname) +
156 		    strlen(d->d_name) + 1;
157 		q = (struct jobqueue *)malloc(entrysz);
158 		if (q == NULL)
159 			goto errdone;
160 		q->job_matched = 0;
161 		q->job_processed = 0;
162 		q->job_time = stbuf.st_mtime;
163 		strcpy(q->job_cfname, d->d_name);
164 		/*
165 		 * Check to make sure the array has space left and
166 		 * realloc the maximum size.
167 		 */
168 		if (++nitems > arraysz) {
169 			arraysz *= 2;
170 			queue = (struct jobqueue **)realloc((char *)queue,
171 			    arraysz * sizeof(struct jobqueue *));
172 			if (queue == NULL)
173 				goto errdone;
174 		}
175 		queue[nitems-1] = q;
176 	}
177 	closedir(dirp);
178 	if (nitems)
179 		qsort(queue, nitems, sizeof(struct jobqueue *), compar);
180 	*namelist = queue;
181 	return(nitems);
182 
183 errdone:
184 	closedir(dirp);
185 	seteuid(uid);
186 	return (-1);
187 }
188 
189 /*
190  * Compare modification times.
191  */
192 static int
193 compar(const void *p1, const void *p2)
194 {
195 	const struct jobqueue *qe1, *qe2;
196 
197 	qe1 = *(const struct jobqueue * const *)p1;
198 	qe2 = *(const struct jobqueue * const *)p2;
199 
200 	if (qe1->job_time < qe2->job_time)
201 		return (-1);
202 	if (qe1->job_time > qe2->job_time)
203 		return (1);
204 	/*
205 	 * At this point, the two files have the same last-modification time.
206 	 * return a result based on filenames, so that 'cfA001some.host' will
207 	 * come before 'cfA002some.host'.  Since the jobid ('001') will wrap
208 	 * around when it gets to '999', we also assume that '9xx' jobs are
209 	 * older than '0xx' jobs.
210 	*/
211 	if ((qe1->job_cfname[3] == '9') && (qe2->job_cfname[3] == '0'))
212 		return (-1);
213 	if ((qe1->job_cfname[3] == '0') && (qe2->job_cfname[3] == '9'))
214 		return (1);
215 	return (strcmp(qe1->job_cfname, qe2->job_cfname));
216 }
217 
218 /*
219  * A simple routine to determine the job number for a print job based on
220  * the name of its control file.  The algorithm used here may look odd, but
221  * the main issue is that all parts of `lpd', `lpc', `lpq' & `lprm' must be
222  * using the same algorithm, whatever that algorithm may be.  If the caller
223  * provides a non-null value for ''hostpp', then this returns a pointer to
224  * the start of the hostname (or IP address?) as found in the filename.
225  *
226  * Algorithm: The standard `cf' file has the job number start in position 4,
227  * but some implementations have that as an extra file-sequence letter, and
228  * start the job number in position 5.  The job number is usually three bytes,
229  * but may be as many as five.  Confusing matters still more, some Windows
230  * print servers will append an IP address to the job number, instead of
231  * the expected hostname.  So, if the job number ends with a '.', then
232  * assume the correct jobnum value is the first three digits.
233  */
234 int
235 calc_jobnum(const char *cfname, const char **hostpp)
236 {
237 	int jnum;
238 	const char *cp, *numstr, *hoststr;
239 
240 	numstr = cfname + 3;
241 	if (!isdigitch(*numstr))
242 		numstr++;
243 	jnum = 0;
244 	for (cp = numstr; (cp < numstr + 5) && isdigitch(*cp); cp++)
245 		jnum = jnum * 10 + (*cp - '0');
246 	hoststr = cp;
247 
248 	/*
249 	 * If the filename was built with an IP number instead of a hostname,
250 	 * then recalculate using only the first three digits found.
251 	 */
252 	while(isdigitch(*cp))
253 		cp++;
254 	if (*cp == '.') {
255 		jnum = 0;
256 		for (cp = numstr; (cp < numstr + 3) && isdigitch(*cp); cp++)
257 			jnum = jnum * 10 + (*cp - '0');
258 		hoststr = cp;
259 	}
260 	if (hostpp != NULL)
261 		*hostpp = hoststr;
262 	return (jnum);
263 }
264 
265 /* sleep n milliseconds */
266 void
267 delay(int millisec)
268 {
269 	struct timeval tdelay;
270 
271 	if (millisec <= 0 || millisec > 10000)
272 		fatal((struct printer *)0, /* fatal() knows how to deal */
273 		    "unreasonable delay period (%d)", millisec);
274 	tdelay.tv_sec = millisec / 1000;
275 	tdelay.tv_usec = millisec * 1000 % 1000000;
276 	(void) select(0, (fd_set *)0, (fd_set *)0, (fd_set *)0, &tdelay);
277 }
278 
279 char *
280 lock_file_name(const struct printer *pp, char *buf, size_t len)
281 {
282 	static char staticbuf[MAXPATHLEN];
283 
284 	if (buf == 0)
285 		buf = staticbuf;
286 	if (len == 0)
287 		len = MAXPATHLEN;
288 
289 	if (pp->lock_file[0] == '/')
290 		strlcpy(buf, pp->lock_file, len);
291 	else
292 		snprintf(buf, len, "%s/%s", pp->spool_dir, pp->lock_file);
293 
294 	return buf;
295 }
296 
297 char *
298 status_file_name(const struct printer *pp, char *buf, size_t len)
299 {
300 	static char staticbuf[MAXPATHLEN];
301 
302 	if (buf == 0)
303 		buf = staticbuf;
304 	if (len == 0)
305 		len = MAXPATHLEN;
306 
307 	if (pp->status_file[0] == '/')
308 		strlcpy(buf, pp->status_file, len);
309 	else
310 		snprintf(buf, len, "%s/%s", pp->spool_dir, pp->status_file);
311 
312 	return buf;
313 }
314 
315 /*
316  * Routine to change operational state of a print queue.  The operational
317  * state is indicated by the access bits on the lock file for the queue.
318  * At present, this is only called from various routines in lpc/cmds.c.
319  *
320  *  XXX - Note that this works by changing access-bits on the
321  *	file, and you can only do that if you are the owner of
322  *	the file, or root.  Thus, this won't really work for
323  *	userids in the "LPR_OPER" group, unless lpc is running
324  *	setuid to root (or maybe setuid to daemon).
325  *	Generally lpc is installed setgid to daemon, but does
326  *	not run setuid.
327  */
328 int
329 set_qstate(int action, const char *lfname)
330 {
331 	struct stat stbuf;
332 	mode_t chgbits, newbits, oldmask;
333 	const char *failmsg, *okmsg;
334 	static const char *nomsg = "no state msg";
335 	int chres, errsav, fd, res, statres;
336 
337 	/*
338 	 * Find what the current access-bits are.
339 	 */
340 	memset(&stbuf, 0, sizeof(stbuf));
341 	seteuid(euid);
342 	statres = stat(lfname, &stbuf);
343 	errsav = errno;
344 	seteuid(uid);
345 	if ((statres < 0) && (errsav != ENOENT)) {
346 		printf("\tcannot stat() lock file\n");
347 		return (SQS_STATFAIL);
348 		/* NOTREACHED */
349 	}
350 
351 	/*
352 	 * Determine which bit(s) should change for the requested action.
353 	 */
354 	chgbits = stbuf.st_mode;
355 	newbits = LOCK_FILE_MODE;
356 	okmsg = NULL;
357 	failmsg = NULL;
358 	if (action & SQS_QCHANGED) {
359 		chgbits |= LFM_RESET_QUE;
360 		newbits |= LFM_RESET_QUE;
361 		/* The okmsg is not actually printed for this case. */
362 		okmsg = nomsg;
363 		failmsg = "set queue-changed";
364 	}
365 	if (action & SQS_DISABLEQ) {
366 		chgbits |= LFM_QUEUE_DIS;
367 		newbits |= LFM_QUEUE_DIS;
368 		okmsg = "queuing disabled";
369 		failmsg = "disable queuing";
370 	}
371 	if (action & SQS_STOPP) {
372 		chgbits |= LFM_PRINT_DIS;
373 		newbits |= LFM_PRINT_DIS;
374 		okmsg = "printing disabled";
375 		failmsg = "disable printing";
376 		if (action & SQS_DISABLEQ) {
377 			okmsg = "printer and queuing disabled";
378 			failmsg = "disable queuing and printing";
379 		}
380 	}
381 	if (action & SQS_ENABLEQ) {
382 		chgbits &= ~LFM_QUEUE_DIS;
383 		newbits &= ~LFM_QUEUE_DIS;
384 		okmsg = "queuing enabled";
385 		failmsg = "enable queuing";
386 	}
387 	if (action & SQS_STARTP) {
388 		chgbits &= ~LFM_PRINT_DIS;
389 		newbits &= ~LFM_PRINT_DIS;
390 		okmsg = "printing enabled";
391 		failmsg = "enable printing";
392 	}
393 	if (okmsg == NULL) {
394 		/* This routine was called with an invalid action. */
395 		printf("\t<error in set_qstate!>\n");
396 		return (SQS_PARMERR);
397 		/* NOTREACHED */
398 	}
399 
400 	res = 0;
401 	if (statres >= 0) {
402 		/* The file already exists, so change the access. */
403 		seteuid(euid);
404 		chres = chmod(lfname, chgbits);
405 		errsav = errno;
406 		seteuid(uid);
407 		res = SQS_CHGOK;
408 		if (chres < 0)
409 			res = SQS_CHGFAIL;
410 	} else if (newbits == LOCK_FILE_MODE) {
411 		/*
412 		 * The file does not exist, but the state requested is
413 		 * the same as the default state when no file exists.
414 		 * Thus, there is no need to create the file.
415 		 */
416 		res = SQS_SKIPCREOK;
417 	} else {
418 		/*
419 		 * The file did not exist, so create it with the
420 		 * appropriate access bits for the requested action.
421 		 * Push a new umask around that create, to make sure
422 		 * all the read/write bits are set as desired.
423 		 */
424 		oldmask = umask(S_IWOTH);
425 		seteuid(euid);
426 		fd = open(lfname, O_WRONLY|O_CREAT, newbits);
427 		errsav = errno;
428 		seteuid(uid);
429 		umask(oldmask);
430 		res = SQS_CREFAIL;
431 		if (fd >= 0) {
432 			res = SQS_CREOK;
433 			close(fd);
434 		}
435 	}
436 
437 	switch (res) {
438 	case SQS_CHGOK:
439 	case SQS_CREOK:
440 	case SQS_SKIPCREOK:
441 		if (okmsg != nomsg)
442 			printf("\t%s\n", okmsg);
443 		break;
444 	case SQS_CREFAIL:
445 		printf("\tcannot create lock file: %s\n",
446 		    strerror(errsav));
447 		break;
448 	default:
449 		printf("\tcannot %s: %s\n", failmsg, strerror(errsav));
450 		break;
451 	}
452 
453 	return (res);
454 }
455 
456 /* routine to get a current timestamp, optionally in a standard-fmt string */
457 void
458 lpd_gettime(struct timespec *tsp, char *strp, size_t strsize)
459 {
460 	struct timespec local_ts;
461 	struct timeval btime;
462 	char tempstr[TIMESTR_SIZE];
463 #ifdef STRFTIME_WRONG_z
464 	char *destp;
465 #endif
466 
467 	if (tsp == NULL)
468 		tsp = &local_ts;
469 
470 	/* some platforms have a routine called clock_gettime, but the
471 	 * routine does nothing but return "not implemented". */
472 	memset(tsp, 0, sizeof(struct timespec));
473 	if (clock_gettime(CLOCK_REALTIME, tsp)) {
474 		/* nanosec-aware rtn failed, fall back to microsec-aware rtn */
475 		memset(tsp, 0, sizeof(struct timespec));
476 		gettimeofday(&btime, NULL);
477 		tsp->tv_sec = btime.tv_sec;
478 		tsp->tv_nsec = btime.tv_usec * 1000;
479 	}
480 
481 	/* caller may not need a character-ized version */
482 	if ((strp == NULL) || (strsize < 1))
483 		return;
484 
485 	strftime(tempstr, TIMESTR_SIZE, LPD_TIMESTAMP_PATTERN,
486 		 localtime(&tsp->tv_sec));
487 
488 	/*
489 	 * This check is for implementations of strftime which treat %z
490 	 * (timezone as [+-]hhmm ) like %Z (timezone as characters), or
491 	 * completely ignore %z.  This section is not needed on freebsd.
492 	 * I'm not sure this is completely right, but it should work OK
493 	 * for EST and EDT...
494 	 */
495 #ifdef STRFTIME_WRONG_z
496 	destp = strrchr(tempstr, ':');
497 	if (destp != NULL) {
498 		destp += 3;
499 		if ((*destp != '+') && (*destp != '-')) {
500 			char savday[6];
501 			int tzmin = timezone / 60;
502 			int tzhr = tzmin / 60;
503 			if (daylight)
504 				tzhr--;
505 			strcpy(savday, destp + strlen(destp) - 4);
506 			snprintf(destp, (destp - tempstr), "%+03d%02d",
507 			    (-1*tzhr), tzmin % 60);
508 			strcat(destp, savday);
509 		}
510 	}
511 #endif
512 
513 	if (strsize > TIMESTR_SIZE) {
514 		strsize = TIMESTR_SIZE;
515 		strp[TIMESTR_SIZE+1] = '\0';
516 	}
517 	strlcpy(strp, tempstr, strsize);
518 }
519 
520 /* routines for writing transfer-statistic records */
521 void
522 trstat_init(struct printer *pp, const char *fname, int filenum)
523 {
524 	register const char *srcp;
525 	register char *destp, *endp;
526 
527 	/*
528 	 * Figure out the job id of this file.  The filename should be
529 	 * 'cf', 'df', or maybe 'tf', followed by a letter (or sometimes
530 	 * two), followed by the jobnum, followed by a hostname.
531 	 * The jobnum is usually 3 digits, but might be as many as 5.
532 	 * Note that some care has to be taken parsing this, as the
533 	 * filename could be coming from a remote-host, and thus might
534 	 * not look anything like what is expected...
535 	 */
536 	memset(pp->jobnum, 0, sizeof(pp->jobnum));
537 	pp->jobnum[0] = '0';
538 	srcp = strchr(fname, '/');
539 	if (srcp == NULL)
540 		srcp = fname;
541 	destp = &(pp->jobnum[0]);
542 	endp = destp + 5;
543 	while (*srcp != '\0' && (*srcp < '0' || *srcp > '9'))
544 		srcp++;
545 	while (*srcp >= '0' && *srcp <= '9' && destp < endp)
546 		*(destp++) = *(srcp++);
547 
548 	/* get the starting time in both numeric and string formats, and
549 	 * save those away along with the file-number */
550 	pp->jobdfnum = filenum;
551 	lpd_gettime(&pp->tr_start, pp->tr_timestr, (size_t)TIMESTR_SIZE);
552 
553 	return;
554 }
555 
556 void
557 trstat_write(struct printer *pp, tr_sendrecv sendrecv, size_t bytecnt,
558     const char *userid, const char *otherhost, const char *orighost)
559 {
560 #define STATLINE_SIZE 1024
561 	double trtime;
562 	size_t remspace;
563 	int statfile;
564 	char thishost[MAXHOSTNAMELEN], statline[STATLINE_SIZE];
565 	char *eostat;
566 	const char *lprhost, *recvdev, *recvhost, *rectype;
567 	const char *sendhost, *statfname;
568 #define UPD_EOSTAT(xStr) do {         \
569 	eostat = strchr(xStr, '\0');  \
570 	remspace = eostat - xStr;     \
571 } while(0)
572 
573 	lpd_gettime(&pp->tr_done, NULL, (size_t)0);
574 	trtime = DIFFTIME_TS(pp->tr_done, pp->tr_start);
575 
576 	gethostname(thishost, sizeof(thishost));
577 	lprhost = sendhost = recvhost = recvdev = NULL;
578 	switch (sendrecv) {
579 	    case TR_SENDING:
580 		rectype = "send";
581 		statfname = pp->stat_send;
582 		sendhost = thishost;
583 		recvhost = otherhost;
584 		break;
585 	    case TR_RECVING:
586 		rectype = "recv";
587 		statfname = pp->stat_recv;
588 		sendhost = otherhost;
589 		recvhost = thishost;
590 		break;
591 	    case TR_PRINTING:
592 		/*
593 		 * This case is for copying to a device (presumably local,
594 		 * though filters using things like 'net/CAP' can confuse
595 		 * this assumption...).
596 		 */
597 		rectype = "prnt";
598 		statfname = pp->stat_send;
599 		sendhost = thishost;
600 		recvdev = _PATH_DEFDEVLP;
601 		if (pp->lp) recvdev = pp->lp;
602 		break;
603 	    default:
604 		/* internal error...  should we syslog/printf an error? */
605 		return;
606 	}
607 	if (statfname == NULL)
608 		return;
609 
610 	/*
611 	 * the original-host and userid are found out by reading thru the
612 	 * cf (control-file) for the job.  Unfortunately, on incoming jobs
613 	 * the df's (data-files) are sent before the matching cf, so the
614 	 * orighost & userid are generally not-available for incoming jobs.
615 	 *
616 	 * (it would be nice to create a work-around for that..)
617 	 */
618 	if (orighost && (*orighost != '\0'))
619 		lprhost = orighost;
620 	else
621 		lprhost = ".na.";
622 	if (*userid == '\0')
623 		userid = NULL;
624 
625 	/*
626 	 * Format of statline.
627 	 * Some of the keywords listed here are not implemented here, but
628 	 * they are listed to reserve the meaning for a given keyword.
629 	 * Fields are separated by a blank.  The fields in statline are:
630 	 *   <tstamp>      - time the transfer started
631 	 *   <ptrqueue>    - name of the printer queue (the short-name...)
632 	 *   <hname>       - hostname the file originally came from (the
633 	 *		     'lpr host'), if known, or  "_na_" if not known.
634 	 *   <xxx>         - id of job from that host (generally three digits)
635 	 *   <n>           - file count (# of file within job)
636 	 *   <rectype>     - 4-byte field indicating the type of transfer
637 	 *		     statistics record.  "send" means it's from the
638 	 *		     host sending a datafile, "recv" means it's from
639 	 *		     a host as it receives a datafile.
640 	 *   user=<userid> - user who sent the job (if known)
641 	 *   secs=<n>      - seconds it took to transfer the file
642 	 *   bytes=<n>     - number of bytes transfered (ie, "bytecount")
643 	 *   bps=<n.n>e<n> - Bytes/sec (if the transfer was "big enough"
644 	 *		     for this to be useful)
645 	 * ! top=<str>     - type of printer (if the type is defined in
646 	 *		     printcap, and if this statline is for sending
647 	 *		     a file to that ptr)
648 	 * ! qls=<n>       - queue-length at start of send/print-ing a job
649 	 * ! qle=<n>       - queue-length at end of send/print-ing a job
650 	 *   sip=<addr>    - IP address of sending host, only included when
651 	 *		     receiving a job.
652 	 *   shost=<hname> - sending host (if that does != the original host)
653 	 *   rhost=<hname> - hostname receiving the file (ie, "destination")
654 	 *   rdev=<dev>    - device receiving the file, when the file is being
655 	 *		     send to a device instead of a remote host.
656 	 *
657 	 * Note: A single print job may be transferred multiple times.  The
658 	 * original 'lpr' occurs on one host, and that original host might
659 	 * send to some interim host (or print server).  That interim host
660 	 * might turn around and send the job to yet another host (most likely
661 	 * the real printer).  The 'shost=' parameter is only included if the
662 	 * sending host for this particular transfer is NOT the same as the
663 	 * host which did the original 'lpr'.
664 	 *
665 	 * Many values have 'something=' tags before them, because they are
666 	 * in some sense "optional", or their order may vary.  "Optional" may
667 	 * mean in the sense that different SITES might choose to have other
668 	 * fields in the record, or that some fields are only included under
669 	 * some circumstances.  Programs processing these records should not
670 	 * assume the order or existence of any of these keyword fields.
671 	 */
672 	snprintf(statline, STATLINE_SIZE, "%s %s %s %s %03ld %s",
673 	    pp->tr_timestr, pp->printer, lprhost, pp->jobnum,
674 	    pp->jobdfnum, rectype);
675 	UPD_EOSTAT(statline);
676 
677 	if (userid != NULL) {
678 		snprintf(eostat, remspace, " user=%s", userid);
679 		UPD_EOSTAT(statline);
680 	}
681 	snprintf(eostat, remspace, " secs=%#.2f bytes=%lu", trtime,
682 	    (unsigned long)bytecnt);
683 	UPD_EOSTAT(statline);
684 
685 	/*
686 	 * The bps field duplicates info from bytes and secs, so do
687 	 * not bother to include it for very small files.
688 	 */
689 	if ((bytecnt > 25000) && (trtime > 1.1)) {
690 		snprintf(eostat, remspace, " bps=%#.2e",
691 		    ((double)bytecnt/trtime));
692 		UPD_EOSTAT(statline);
693 	}
694 
695 	if (sendrecv == TR_RECVING) {
696 		if (remspace > 5+strlen(from_ip) ) {
697 			snprintf(eostat, remspace, " sip=%s", from_ip);
698 			UPD_EOSTAT(statline);
699 		}
700 	}
701 	if (0 != strcmp(lprhost, sendhost)) {
702 		if (remspace > 7+strlen(sendhost) ) {
703 			snprintf(eostat, remspace, " shost=%s", sendhost);
704 			UPD_EOSTAT(statline);
705 		}
706 	}
707 	if (recvhost) {
708 		if (remspace > 7+strlen(recvhost) ) {
709 			snprintf(eostat, remspace, " rhost=%s", recvhost);
710 			UPD_EOSTAT(statline);
711 		}
712 	}
713 	if (recvdev) {
714 		if (remspace > 6+strlen(recvdev) ) {
715 			snprintf(eostat, remspace, " rdev=%s", recvdev);
716 			UPD_EOSTAT(statline);
717 		}
718 	}
719 	if (remspace > 1) {
720 		strcpy(eostat, "\n");
721 	} else {
722 		/* probably should back up to just before the final " x=".. */
723 		strcpy(statline+STATLINE_SIZE-2, "\n");
724 	}
725 	statfile = open(statfname, O_WRONLY|O_APPEND, 0664);
726 	if (statfile < 0) {
727 		/* statfile was given, but we can't open it.  should we
728 		 * syslog/printf this as an error? */
729 		return;
730 	}
731 	write(statfile, statline, strlen(statline));
732 	close(statfile);
733 
734 	return;
735 #undef UPD_EOSTAT
736 }
737 
738 #include <stdarg.h>
739 
740 void
741 fatal(const struct printer *pp, const char *msg, ...)
742 {
743 	va_list ap;
744 	va_start(ap, msg);
745 	/* this error message is being sent to the 'from_host' */
746 	if (from_host != local_host)
747 		(void)printf("%s: ", local_host);
748 	(void)printf("%s: ", progname);
749 	if (pp && pp->printer)
750 		(void)printf("%s: ", pp->printer);
751 	(void)vprintf(msg, ap);
752 	va_end(ap);
753 	(void)putchar('\n');
754 	exit(1);
755 }
756 
757 /*
758  * Close all file descriptors from START on up.
759  * This is a horrific kluge, since getdtablesize() might return
760  * ``infinity'', in which case we will be spending a long time
761  * closing ``files'' which were never open.  Perhaps it would
762  * be better to close the first N fds, for some small value of N.
763  */
764 void
765 closeallfds(int start)
766 {
767 	int stop = getdtablesize();
768 	for (; start < stop; start++)
769 		close(start);
770 }
771 
772