1 /*
2  * Copyright (c) 1983 Regents of the University of California.
3  * All rights reserved.  The Berkeley software License Agreement
4  * specifies the terms and conditions for redistribution.
5  */
6 
7 #ifndef lint
8 static char sccsid[] = "@(#)displayq.c	5.1 (Berkeley) 6/6/85";
9 #endif not lint
10 
11 /*
12  * Routines to display the state of the queue.
13  */
14 
15 #include "lp.h"
16 
17 #define JOBCOL	40		/* column for job # in -l format */
18 #define OWNCOL	7		/* start of Owner column in normal */
19 #define SIZCOL	62		/* start of Size column in normal */
20 
21 /*
22  * Stuff for handling job specifications
23  */
24 extern char	*user[];	/* users to process */
25 extern int	users;		/* # of users in user array */
26 extern int	requ[];		/* job number of spool entries */
27 extern int	requests;	/* # of spool requests */
28 
29 int	lflag;		/* long output option */
30 char	current[40];	/* current file being printed */
31 int	garbage;	/* # of garbage cf files */
32 int	rank;		/* order to be printed (-1=none, 0=active) */
33 long	totsize;	/* total print job size in bytes */
34 int	first;		/* first file in ``files'' column? */
35 int	col;		/* column on screen */
36 int	sendtorem;	/* are we sending to a remote? */
37 char	file[132];	/* print file name */
38 
39 char	*head0 = "Rank   Owner      Job  Files";
40 char	*head1 = "Total Size\n";
41 
42 /*
43  * Display the current state of the queue. Format = 1 if long format.
44  */
45 displayq(format)
46 	int format;
47 {
48 	register struct queue *q;
49 	register int i, nitems, fd;
50 	register char	*cp;
51 	struct queue **queue;
52 	struct stat statb;
53 	FILE *fp;
54 	char c;
55 
56 	lflag = format;
57 	totsize = 0;
58 	rank = -1;
59 
60 	if ((i = pgetent(line, printer)) < 0)
61 		fatal("cannot open printer description file");
62 	else if (i == 0)
63 		fatal("unknown printer");
64 	if ((LP = pgetstr("lp", &bp)) == NULL)
65 		LP = DEFDEVLP;
66 	if ((RP = pgetstr("rp", &bp)) == NULL)
67 		RP = DEFLP;
68 	if ((SD = pgetstr("sd", &bp)) == NULL)
69 		SD = DEFSPOOL;
70 	if ((LO = pgetstr("lo", &bp)) == NULL)
71 		LO = DEFLOCK;
72 	if ((ST = pgetstr("st", &bp)) == NULL)
73 		ST = DEFSTAT;
74 	RM = pgetstr("rm", &bp);
75 
76 	/*
77 	 * Figure out whether the local machine is the same as the remote
78 	 * machine entry (if it exists).  If not, then ignore the local
79 	 * queue information.
80 	 */
81 	 if (RM != (char *) NULL) {
82 		char name[256];
83 		struct hostent *hp;
84 
85 		/* get the standard network name of the local host */
86 		gethostname(name, sizeof(name));
87 		name[sizeof(name)-1] = '\0';
88 		hp = gethostbyname(name);
89 		if (hp == (struct hostent *) NULL) {
90 		    printf("unable to get network name for local machine %s\n",
91 			name);
92 		    goto localcheck_done;
93 		} else (void) strcpy(name, hp->h_name);
94 
95 		/* get the network standard name of RM */
96 		hp = gethostbyname(RM);
97 		if (hp == (struct hostent *) NULL) {
98 		    printf("unable to get hostname for remote machine %s\n",
99 			RM);
100 		    goto localcheck_done;
101 		}
102 
103 		/* if printer is not on local machine, ignore LP */
104 		if (strcmp(name, hp->h_name)) {
105 			*LP = '\0';
106 			++sendtorem;
107 		}
108 	}
109 localcheck_done:
110 
111 	/*
112 	 * Print out local queue
113 	 * Find all the control files in the spooling directory
114 	 */
115 	if (chdir(SD) < 0)
116 		fatal("cannot chdir to spooling directory");
117 	if ((nitems = getq(&queue)) < 0)
118 		fatal("cannot examine spooling area\n");
119 	if (stat(LO, &statb) >= 0) {
120 		if (statb.st_mode & 0100) {
121 			if (sendtorem)
122 				printf("%s: ", host);
123 			printf("Warning: %s is down: ", printer);
124 			fd = open(ST, O_RDONLY);
125 			if (fd >= 0) {
126 				(void) flock(fd, LOCK_SH);
127 				while ((i = read(fd, line, sizeof(line))) > 0)
128 					(void) fwrite(line, 1, i, stdout);
129 				(void) close(fd);	/* unlocks as well */
130 			} else
131 				putchar('\n');
132 		}
133 		if (statb.st_mode & 010) {
134 			if (sendtorem)
135 				printf("%s: ", host);
136 			printf("Warning: %s queue is turned off\n", printer);
137 		}
138 	}
139 
140 	if (nitems) {
141 		fp = fopen(LO, "r");
142 		if (fp == NULL)
143 			warn();
144 		else {
145 			register char *cp;
146 
147 			/* get daemon pid */
148 			cp = current;
149 			while ((*cp = getc(fp)) != EOF && *cp != '\n')
150 				cp++;
151 			*cp = '\0';
152 			i = atoi(current);
153 			if (i <= 0 || kill(i, 0) < 0)
154 				warn();
155 			else {
156 				/* read current file name */
157 				cp = current;
158 				while ((*cp = getc(fp)) != EOF && *cp != '\n')
159 					cp++;
160 				*cp = '\0';
161 				/*
162 				 * Print the status file.
163 				 */
164 				if (sendtorem)
165 					printf("%s: ", host);
166 				fd = open(ST, O_RDONLY);
167 				if (fd >= 0) {
168 					(void) flock(fd, LOCK_SH);
169 					while ((i = read(fd, line, sizeof(line))) > 0)
170 						(void) fwrite(line, 1, i, stdout);
171 					(void) close(fd);	/* unlocks as well */
172 				} else
173 					putchar('\n');
174 			}
175 			(void) fclose(fp);
176 		}
177 		/*
178 		 * Now, examine the control files and print out the jobs to
179 		 * be done for each user.
180 		 */
181 		if (!lflag)
182 			header();
183 		for (i = 0; i < nitems; i++) {
184 			q = queue[i];
185 			inform(q->q_name);
186 			free(q);
187 		}
188 		free(queue);
189 	}
190 	else if (!sendtorem) {
191 		puts("no entries");
192 		return;
193 	}
194 
195 	/*
196 	 * Print foreign queue
197 	 * Note that a file in transit may show up in either queue.
198 	 */
199 	if (nitems)
200 		putchar('\n');
201 	(void) sprintf(line, "%c%s", format + '\3', RP);
202 	cp = line;
203 	for (i = 0; i < requests; i++) {
204 		cp += strlen(cp);
205 		(void) sprintf(cp, " %d", requ[i]);
206 	}
207 	for (i = 0; i < users; i++) {
208 		cp += strlen(cp);
209 		*cp++ = ' ';
210 		(void) strcpy(cp, user[i]);
211 	}
212 	strcat(line, "\n");
213 	fd = getport(RM);
214 	if (fd < 0) {
215 		if (from != host)
216 			printf("%s: ", host);
217 		printf("connection to %s is down\n", RM);
218 	}
219 	else {
220 		i = strlen(line);
221 		if (write(fd, line, i) != i)
222 			fatal("Lost connection");
223 		while ((i = read(fd, line, sizeof(line))) > 0)
224 			(void) fwrite(line, 1, i, stdout);
225 		(void) close(fd);
226 	}
227 }
228 
229 /*
230  * Print a warning message if there is no daemon present.
231  */
232 warn()
233 {
234 	if (sendtorem)
235 		printf("\n%s: ", host);
236 	puts("Warning: no daemon present");
237 	current[0] = '\0';
238 }
239 
240 /*
241  * Print the header for the short listing format
242  */
243 header()
244 {
245 	printf(head0);
246 	col = strlen(head0)+1;
247 	blankfill(SIZCOL);
248 	printf(head1);
249 }
250 
251 inform(cf)
252 	char *cf;
253 {
254 	register int j, k;
255 	register char *cp;
256 	FILE *cfp;
257 
258 	/*
259 	 * There's a chance the control file has gone away
260 	 * in the meantime; if this is the case just keep going
261 	 */
262 	if ((cfp = fopen(cf, "r")) == NULL)
263 		return;
264 
265 	if (rank < 0)
266 		rank = 0;
267 	if (sendtorem || garbage || strcmp(cf, current))
268 		rank++;
269 	j = 0;
270 	while (getline(cfp)) {
271 		switch (line[0]) {
272 		case 'P': /* Was this file specified in the user's list? */
273 			if (!inlist(line+1, cf)) {
274 				fclose(cfp);
275 				return;
276 			}
277 			if (lflag) {
278 				printf("\n%s: ", line+1);
279 				col = strlen(line+1) + 2;
280 				prank(rank);
281 				blankfill(JOBCOL);
282 				printf(" [job %s]\n", cf+3);
283 			} else {
284 				col = 0;
285 				prank(rank);
286 				blankfill(OWNCOL);
287 				printf("%-10s %-3d  ", line+1, atoi(cf+3));
288 				col += 16;
289 				first = 1;
290 			}
291 			continue;
292 		default: /* some format specifer and file name? */
293 			if (line[0] < 'a' || line[0] > 'z')
294 				continue;
295 			if (j == 0 || strcmp(file, line+1) != 0)
296 				(void) strcpy(file, line+1);
297 			j++;
298 			continue;
299 		case 'N':
300 			show(line+1, file, j);
301 			file[0] = '\0';
302 			j = 0;
303 		}
304 	}
305 	fclose(cfp);
306 	if (!lflag) {
307 		blankfill(SIZCOL);
308 		printf("%D bytes\n", totsize);
309 		totsize = 0;
310 	}
311 }
312 
313 inlist(name, file)
314 	char *name, *file;
315 {
316 	register int *r, n;
317 	register char **u, *cp;
318 
319 	if (users == 0 && requests == 0)
320 		return(1);
321 	/*
322 	 * Check to see if it's in the user list
323 	 */
324 	for (u = user; u < &user[users]; u++)
325 		if (!strcmp(*u, name))
326 			return(1);
327 	/*
328 	 * Check the request list
329 	 */
330 	for (n = 0, cp = file+3; isdigit(*cp); )
331 		n = n * 10 + (*cp++ - '0');
332 	for (r = requ; r < &requ[requests]; r++)
333 		if (*r == n && !strcmp(cp, from))
334 			return(1);
335 	return(0);
336 }
337 
338 show(nfile, file, copies)
339 	register char *nfile, *file;
340 {
341 	if (strcmp(nfile, " ") == 0)
342 		nfile = "(standard input)";
343 	if (lflag)
344 		ldump(nfile, file, copies);
345 	else
346 		dump(nfile, file, copies);
347 }
348 
349 /*
350  * Fill the line with blanks to the specified column
351  */
352 blankfill(n)
353 	register int n;
354 {
355 	while (col++ < n)
356 		putchar(' ');
357 }
358 
359 /*
360  * Give the abbreviated dump of the file names
361  */
362 dump(nfile, file, copies)
363 	char *nfile, *file;
364 {
365 	register short n, fill;
366 	struct stat lbuf;
367 
368 	/*
369 	 * Print as many files as will fit
370 	 *  (leaving room for the total size)
371 	 */
372 	 fill = first ? 0 : 2;	/* fill space for ``, '' */
373 	 if (((n = strlen(nfile)) + col + fill) >= SIZCOL-4) {
374 		if (col < SIZCOL) {
375 			printf(" ..."), col += 4;
376 			blankfill(SIZCOL);
377 		}
378 	} else {
379 		if (first)
380 			first = 0;
381 		else
382 			printf(", ");
383 		printf("%s", nfile);
384 		col += n+fill;
385 	}
386 	if (*file && !stat(file, &lbuf))
387 		totsize += copies * lbuf.st_size;
388 }
389 
390 /*
391  * Print the long info about the file
392  */
393 ldump(nfile, file, copies)
394 	char *nfile, *file;
395 {
396 	struct stat lbuf;
397 
398 	putchar('\t');
399 	if (copies > 1)
400 		printf("%-2d copies of %-19s", copies, nfile);
401 	else
402 		printf("%-32s", nfile);
403 	if (*file && !stat(file, &lbuf))
404 		printf(" %D bytes", lbuf.st_size);
405 	else
406 		printf(" ??? bytes");
407 	putchar('\n');
408 }
409 
410 /*
411  * Print the job's rank in the queue,
412  *   update col for screen management
413  */
414 prank(n)
415 {
416 	char line[100];
417 	static char *r[] = {
418 		"th", "st", "nd", "rd", "th", "th", "th", "th", "th", "th"
419 	};
420 
421 	if (n == 0) {
422 		printf("active");
423 		col += 6;
424 		return;
425 	}
426 	if ((n/10) == 1)
427 		(void) sprintf(line, "%dth", n);
428 	else
429 		(void) sprintf(line, "%d%s", n, r[n%10]);
430 	col += strlen(line);
431 	printf("%s", line);
432 }
433