871 lines
18 KiB
C
871 lines
18 KiB
C
/*
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* Copyright (c) 1983 Regents of the University of California.
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* All rights reserved. The Berkeley software License Agreement
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* specifies the terms and conditions for redistribution.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)cmds.c 1.1 92/07/30 SMI"; /* from UCB 5.2 3/30/86 */
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#endif not lint
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/*
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* lpc -- line printer control program -- commands:
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*/
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#include "lp.h"
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#include <sys/time.h>
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static char *next_printer();
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/*
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* kill an existing daemon and disable printing.
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*/
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abort(argc, argv)
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int argc;
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char *argv[];
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{
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register int do_all, status;
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if (argc == 1) {
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printf("Usage: abort {all | printer ...}\n");
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return;
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}
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do_all = (argc == 2 && strcmp(argv[1], "all") == 0);
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for (;;) {
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printer = do_all ? next_printer() : *++argv;
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if (printer == NULL)
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break;
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status = pgetent(line, printer);
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if (status < 0)
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printf("cannot open printer description file\n");
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else if (status == 0)
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printf("unknown printer %s\n", printer);
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else
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abortpr(1);
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}
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}
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abortpr(dis)
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int dis;
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{
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register FILE *fp;
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struct stat stbuf;
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int pid, fd;
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bp = pbuf;
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if ((SD = pgetstr("sd", &bp)) == NULL)
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SD = DEFSPOOL;
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if ((LO = pgetstr("lo", &bp)) == NULL)
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LO = DEFLOCK;
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(void) sprintf(line, "%s/%s", SD, LO);
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printf("%s:\n", printer);
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/*
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* Turn on the owner execute bit of the lock file to disable printing.
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*/
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if (dis) {
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if (stat(line, &stbuf) >= 0) {
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if (chmod(line, (stbuf.st_mode & 0777) | 0100) < 0)
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printf("\tcannot disable printing\n");
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else
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printf("\tprinting disabled\n");
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} else if (errno == ENOENT) {
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if ((fd = open(line, O_WRONLY|O_CREAT, 0760)) < 0)
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printf("\tcannot create lock file\n");
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else {
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(void) close(fd);
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printf("\tprinting disabled\n");
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printf("\tno daemon to abort\n");
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}
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return;
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} else {
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printf("\tcannot stat lock file\n");
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return;
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}
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}
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/*
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* Kill the current daemon to stop printing now.
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*/
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if ((fp = fopen(line, "r")) == NULL) {
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printf("\tcannot open lock file\n");
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return;
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}
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if (!getline(fp) || flock(fileno(fp), LOCK_SH|LOCK_NB) == 0) {
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(void) fclose(fp); /* unlocks as well */
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printf("\tno daemon to abort\n");
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return;
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}
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(void) fclose(fp);
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if (kill(pid = atoi(line), SIGTERM) < 0)
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printf("\tWarning: daemon (pid %d) not killed\n", pid);
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else
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printf("\tdaemon (pid %d) killed\n", pid);
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}
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/*
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* Remove all spool files and temporaries from the spooling area.
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*/
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clean(argc, argv)
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int argc;
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char *argv[];
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{
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register int do_all, status;
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if (argc == 1) {
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printf("Usage: clean {all | printer ...}\n");
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return;
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}
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do_all = (argc == 2 && strcmp(argv[1], "all") == 0);
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for (;;) {
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printer = do_all ? next_printer() : *++argv;
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if (printer == NULL)
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break;
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status = pgetent(line, printer);
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if (status < 0)
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printf("cannot open printer description file\n");
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else if (status == 0)
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printf("unknown printer %s\n", printer);
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else
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cleanpr();
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}
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}
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/*
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* Select spooling files.
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*/
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sselect(d)
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struct direct *d;
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{
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register int c = d->d_name[0];
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register int f = d->d_name[1];
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return (f == 'f' && (c == 'c' || c == 'd' || c == 't'));
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}
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/*
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* Comparison routine for scandir. Sort by job number and machine, then
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* by `cf', `tf', or `df', then by the sequence letter A-Z, a-z.
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*/
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sortq(d1, d2)
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struct direct **d1, **d2;
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{
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register int c1, c2;
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c1 = strcmp((*d1)->d_name + 3, (*d2)->d_name + 3);
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if (c1 != 0)
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return (c1);
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c1 = (*d1)->d_name[0];
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c2 = (*d2)->d_name[0];
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if (c1 == c2)
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return ((*d1)->d_name[2] - (*d2)->d_name[2]);
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else if (c1 == 'c')
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return (-1);
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else if (c2 == 'c')
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return (1);
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else
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return (c2 - c1);
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}
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/*
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* Remove incomplete jobs from spooling area.
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*/
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cleanpr()
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{
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struct direct **queue;
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struct stat s;
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register struct direct **qp;
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register char *lp;
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register int nitems;
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bp = pbuf;
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if ((SD = pgetstr("sd", &bp)) == NULL)
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SD = DEFSPOOL;
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printf("%s:\n", printer);
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(void) strcpy(line, SD);
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lp = line + strlen(SD) + 1;
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lp[-1] = '/';
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nitems = scandir(SD, &queue, sselect, sortq);
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if (nitems < 0) {
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printf("\tcannot examine spool directory\n");
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return;
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}
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for (qp = &queue[0]; nitems != 0; qp++, --nitems) {
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strcpy(lp, (*qp)->d_name);
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if (stat(line, &s) == 0)
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unlinkf(line);
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}
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}
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unlinkf(name)
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char *name;
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{
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if (unlink(name) < 0)
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printf("\tcannot remove %s\n", name);
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else
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printf("\tremoved %s\n", name);
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}
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/*
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* Enable queuing to the printer (allow lpr's).
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*/
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enable(argc, argv)
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int argc;
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char *argv[];
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{
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register int do_all, status;
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if (argc == 1) {
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printf("Usage: enable {all | printer ...}\n");
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return;
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}
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do_all = (argc == 2 && strcmp(argv[1], "all") == 0);
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for (;;) {
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printer = do_all ? next_printer() : *++argv;
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if (printer == NULL)
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break;
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status = pgetent(line, printer);
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if (status < 0)
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printf("cannot open printer description file\n");
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else if (status == 0)
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printf("unknown printer %s\n", printer);
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else
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enablepr();
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}
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}
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enablepr()
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{
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struct stat stbuf;
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bp = pbuf;
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if ((SD = pgetstr("sd", &bp)) == NULL)
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SD = DEFSPOOL;
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if ((LO = pgetstr("lo", &bp)) == NULL)
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LO = DEFLOCK;
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(void) sprintf(line, "%s/%s", SD, LO);
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printf("%s:\n", printer);
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/*
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* Turn off the group execute bit of the lock file to enable queuing.
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*/
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if (stat(line, &stbuf) >= 0) {
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if (chmod(line, stbuf.st_mode & 0767) < 0)
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printf("\tcannot enable queuing\n");
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else
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printf("\tqueuing enabled\n");
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}
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}
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/*
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* Disable queuing.
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*/
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disable(argc, argv)
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int argc;
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char *argv[];
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{
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register int do_all, status;
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if (argc == 1) {
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printf("Usage: disable {all | printer ...}\n");
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return;
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}
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do_all = (argc == 2 && strcmp(argv[1], "all") == 0);
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for (;;) {
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printer = do_all ? next_printer() : *++argv;
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if (printer == NULL)
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break;
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status = pgetent(line, printer);
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if (status < 0)
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printf("cannot open printer description file\n");
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else if (status == 0)
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printf("unknown printer %s\n", printer);
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else
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disablepr();
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}
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}
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disablepr()
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{
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register int fd;
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struct stat stbuf;
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bp = pbuf;
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if ((SD = pgetstr("sd", &bp)) == NULL)
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SD = DEFSPOOL;
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if ((LO = pgetstr("lo", &bp)) == NULL)
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LO = DEFLOCK;
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(void) sprintf(line, "%s/%s", SD, LO);
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printf("%s:\n", printer);
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/*
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* Turn on the group execute bit of the lock file to disable queuing.
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*/
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if (stat(line, &stbuf) >= 0) {
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if (chmod(line, (stbuf.st_mode & 0777) | 010) < 0)
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printf("\tcannot disable queuing\n");
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else
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printf("\tqueuing disabled\n");
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} else if (errno == ENOENT) {
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if ((fd = open(line, O_WRONLY|O_CREAT, 0670)) < 0)
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printf("\tcannot create lock file\n");
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else {
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(void) close(fd);
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printf("\tqueuing disabled\n");
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}
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return;
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} else
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printf("\tcannot stat lock file\n");
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}
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/*
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* Disable queuing and printing and put a message into the status file
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* (reason for being down).
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*/
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down(argc, argv)
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int argc;
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char *argv[];
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{
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register int do_all, status;
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if (argc == 1) {
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printf("Usage: down {all | printer} [message ...]\n");
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return;
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}
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do_all = (argc == 2 && strcmp(argv[1], "all") == 0);
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for (;;) {
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printer = do_all ? next_printer() : argv[1];
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if (printer == NULL)
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break;
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status = pgetent(line, printer);
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if (status < 0)
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printf("cannot open printer description file\n");
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else if (status == 0)
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printf("unknown printer %s\n", printer);
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else
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putmsg(argc - 2, argv + 2);
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if (!do_all)
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break;
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}
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}
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putmsg(argc, argv)
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int argc;
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char **argv;
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{
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register int fd;
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register char *cp1, *cp2;
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char buf[1024];
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struct stat stbuf;
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bp = pbuf;
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if ((SD = pgetstr("sd", &bp)) == NULL)
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SD = DEFSPOOL;
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if ((LO = pgetstr("lo", &bp)) == NULL)
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LO = DEFLOCK;
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if ((ST = pgetstr("st", &bp)) == NULL)
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ST = DEFSTAT;
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printf("%s:\n", printer);
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/*
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* Turn on the group execute bit of the lock file to disable queuing and
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* turn on the owner execute bit of the lock file to disable printing.
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*/
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(void) sprintf(line, "%s/%s", SD, LO);
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if (stat(line, &stbuf) >= 0) {
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if (chmod(line, (stbuf.st_mode & 0777) | 0110) < 0)
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printf("\tcannot disable queuing\n");
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else
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printf("\tprinter and queuing disabled\n");
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} else if (errno == ENOENT) {
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if ((fd = open(line, O_WRONLY|O_CREAT, 0770)) < 0)
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printf("\tcannot create lock file\n");
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else {
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(void) close(fd);
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printf("\tprinter and queuing disabled\n");
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}
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return;
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} else
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printf("\tcannot stat lock file\n");
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/*
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* Write the message into the status file.
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*/
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(void) sprintf(line, "%s/%s", SD, ST);
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fd = open(line, O_WRONLY|O_CREAT, 0664);
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if (fd < 0 || flock(fd, LOCK_EX) < 0) {
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printf("\tcannot create status file\n");
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return;
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}
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(void) ftruncate(fd, (off_t)0);
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if (argc <= 0) {
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(void) write(fd, "\n", 1);
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(void) close(fd);
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return;
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}
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cp1 = buf;
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while (--argc >= 0) {
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cp2 = *argv++;
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while (*cp1++ = *cp2++)
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;
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cp1[-1] = ' ';
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}
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cp1[-1] = '\n';
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*cp1 = '\0';
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(void) write(fd, buf, strlen(buf));
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(void) close(fd);
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}
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/*
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* Exit lpc
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*/
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quit(argc, argv)
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int argc;
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char *argv[];
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{
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exit(0);
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}
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/*
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* Kill and restart the daemon.
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*/
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restart(argc, argv)
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int argc;
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char *argv[];
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{
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register int do_all, status;
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if (argc == 1) {
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printf("Usage: restart {all | printer ...}\n");
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return;
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}
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do_all = (argc == 2 && strcmp(argv[1], "all") == 0);
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for (;;) {
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printer = do_all ? next_printer() : *++argv;
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if (printer == NULL)
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break;
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status = pgetent(line, printer);
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if (status < 0)
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printf("cannot open printer description file\n");
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else if (status == 0)
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printf("unknown printer %s\n", printer);
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else {
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abortpr(0);
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startpr(0);
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}
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}
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}
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/*
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* Enable printing on the specified printer and startup the daemon.
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*/
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start(argc, argv)
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int argc;
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char *argv[];
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{
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register int do_all, status;
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if (argc == 1) {
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printf("Usage: start {all | printer ...}\n");
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return;
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}
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do_all = (argc == 2 && strcmp(argv[1], "all") == 0);
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for (;;) {
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printer = do_all ? next_printer() : *++argv;
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if (printer == NULL)
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break;
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status = pgetent(line, printer);
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if (status < 0)
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printf("cannot open printer description file\n");
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else if (status == 0)
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printf("unknown printer %s\n", printer);
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else
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startpr(1);
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}
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}
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startpr(enable)
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int enable;
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{
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struct stat stbuf;
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bp = pbuf;
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if ((SD = pgetstr("sd", &bp)) == NULL)
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SD = DEFSPOOL;
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if ((LO = pgetstr("lo", &bp)) == NULL)
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LO = DEFLOCK;
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(void) sprintf(line, "%s/%s", SD, LO);
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printf("%s:\n", printer);
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/*
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* Turn off the owner execute bit of the lock file to enable printing.
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*/
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if (enable && stat(line, &stbuf) >= 0) {
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if (chmod(line, stbuf.st_mode & (enable==2 ? 0666 : 0677)) < 0)
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printf("\tcannot enable printing\n");
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else
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printf("\tprinting enabled\n");
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}
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if (!startdaemon(printer))
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printf("\tcouldn't start daemon\n");
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else
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printf("\tdaemon started\n");
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}
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/*
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* Print the status of each queue listed or all the queues.
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*/
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status(argc, argv)
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int argc;
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char *argv[];
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{
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register int do_all, status;
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do_all = (argc == 1) || (argc == 2 && strcmp(argv[1], "all") == 0);
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for (;;) {
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printer = do_all ? next_printer() : *++argv;
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if (printer == NULL)
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break;
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status = pgetent(line, printer);
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if (status < 0)
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printf("cannot open printer description file\n");
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else if (status == 0)
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printf("unknown printer %s\n", printer);
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else
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prstat();
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}
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}
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|
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/*
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* Print the status of the printer queue.
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*/
|
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prstat()
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{
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struct stat stbuf;
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register int fd, i;
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register struct direct *dp;
|
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DIR *dirp;
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bp = pbuf;
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if ((SD = pgetstr("sd", &bp)) == NULL)
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SD = DEFSPOOL;
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if ((LO = pgetstr("lo", &bp)) == NULL)
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LO = DEFLOCK;
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if ((ST = pgetstr("st", &bp)) == NULL)
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ST = DEFSTAT;
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printf("%s:\n", printer);
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(void) sprintf(line, "%s/%s", SD, LO);
|
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if (stat(line, &stbuf) >= 0) {
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printf("\tqueuing is %s\n",
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|
(stbuf.st_mode & 010) ? "disabled" : "enabled");
|
|
printf("\tprinting is %s\n",
|
|
(stbuf.st_mode & 0100) ? "disabled" : "enabled");
|
|
} else {
|
|
printf("\tqueuing is enabled\n");
|
|
printf("\tprinting is enabled\n");
|
|
}
|
|
if ((dirp = opendir(SD)) == NULL) {
|
|
printf("\tcannot examine spool directory\n");
|
|
return;
|
|
}
|
|
i = 0;
|
|
while ((dp = readdir(dirp)) != NULL) {
|
|
if (*dp->d_name == 'c' && dp->d_name[1] == 'f')
|
|
i++;
|
|
}
|
|
closedir(dirp);
|
|
if (i == 0)
|
|
printf("\tno entries\n");
|
|
else if (i == 1)
|
|
printf("\t1 entry in spool area\n");
|
|
else
|
|
printf("\t%d entries in spool area\n", i);
|
|
fd = open(line, O_RDONLY);
|
|
if (fd < 0 || flock(fd, LOCK_SH|LOCK_NB) == 0) {
|
|
(void) close(fd); /* unlocks as well */
|
|
printf("\tno daemon present\n");
|
|
return;
|
|
}
|
|
(void) close(fd);
|
|
putchar('\t');
|
|
(void) sprintf(line, "%s/%s", SD, ST);
|
|
fd = open(line, O_RDONLY);
|
|
if (fd >= 0) {
|
|
(void) flock(fd, LOCK_SH);
|
|
while ((i = read(fd, line, sizeof(line))) > 0)
|
|
(void) fwrite(line, 1, i, stdout);
|
|
(void) close(fd); /* unlocks as well */
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Stop the specified daemon after completing the current job and disable
|
|
* printing.
|
|
*/
|
|
stop(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
register int do_all, status;
|
|
|
|
if (argc == 1) {
|
|
printf("Usage: stop {all | printer ...}\n");
|
|
return;
|
|
}
|
|
|
|
do_all = (argc == 2 && strcmp(argv[1], "all") == 0);
|
|
for (;;) {
|
|
printer = do_all ? next_printer() : *++argv;
|
|
if (printer == NULL)
|
|
break;
|
|
status = pgetent(line, printer);
|
|
if (status < 0)
|
|
printf("cannot open printer description file\n");
|
|
else if (status == 0)
|
|
printf("unknown printer %s\n", printer);
|
|
else
|
|
stoppr();
|
|
}
|
|
}
|
|
|
|
stoppr()
|
|
{
|
|
register int fd;
|
|
struct stat stbuf;
|
|
|
|
bp = pbuf;
|
|
if ((SD = pgetstr("sd", &bp)) == NULL)
|
|
SD = DEFSPOOL;
|
|
if ((LO = pgetstr("lo", &bp)) == NULL)
|
|
LO = DEFLOCK;
|
|
(void) sprintf(line, "%s/%s", SD, LO);
|
|
printf("%s:\n", printer);
|
|
|
|
/*
|
|
* Turn on the owner execute bit of the lock file to disable printing.
|
|
*/
|
|
if (stat(line, &stbuf) >= 0) {
|
|
if (chmod(line, (stbuf.st_mode & 0777) | 0100) < 0)
|
|
printf("\tcannot disable printing\n");
|
|
else
|
|
printf("\tprinting disabled\n");
|
|
} else if (errno == ENOENT) {
|
|
if ((fd = open(line, O_WRONLY|O_CREAT, 0760)) < 0)
|
|
printf("\tcannot create lock file\n");
|
|
else {
|
|
(void) close(fd);
|
|
printf("\tprinting disabled\n");
|
|
}
|
|
} else
|
|
printf("\tcannot stat lock file\n");
|
|
}
|
|
|
|
struct queue **queue;
|
|
int nitems;
|
|
time_t mtime;
|
|
|
|
/*
|
|
* Put the specified jobs at the top of printer queue.
|
|
*/
|
|
topq(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
register int n, i;
|
|
struct stat stbuf;
|
|
register char *cfname;
|
|
int status, changed;
|
|
|
|
if (argc < 3) {
|
|
printf("Usage: topq printer [jobnum ...] [user ...]\n");
|
|
return;
|
|
}
|
|
|
|
--argc;
|
|
printer = *++argv;
|
|
status = pgetent(line, printer);
|
|
if (status < 0) {
|
|
printf("cannot open printer description file\n");
|
|
return;
|
|
} else if (status == 0) {
|
|
printf("%s: unknown printer\n", printer);
|
|
return;
|
|
}
|
|
bp = pbuf;
|
|
if ((SD = pgetstr("sd", &bp)) == NULL)
|
|
SD = DEFSPOOL;
|
|
if ((LO = pgetstr("lo", &bp)) == NULL)
|
|
LO = DEFLOCK;
|
|
printf("%s:\n", printer);
|
|
|
|
if (chdir(SD) < 0) {
|
|
printf("\tcannot chdir to %s\n", SD);
|
|
return;
|
|
}
|
|
nitems = getq(&queue);
|
|
if (nitems == 0)
|
|
return;
|
|
changed = 0;
|
|
mtime = queue[0]->q_time;
|
|
for (i = argc; --i; ) {
|
|
if (doarg(argv[i]) == 0) {
|
|
printf("\tjob %s is not in the queue\n", argv[i]);
|
|
continue;
|
|
} else
|
|
changed++;
|
|
}
|
|
for (i = 0; i < nitems; i++)
|
|
free(queue[i]);
|
|
free(queue);
|
|
if (!changed) {
|
|
printf("\tqueue order unchanged\n");
|
|
return;
|
|
}
|
|
/*
|
|
* Turn on the public execute bit of the lock file to
|
|
* get lpd to rebuild the queue after the current job.
|
|
*/
|
|
if (changed && stat(LO, &stbuf) >= 0)
|
|
(void) chmod(LO, (stbuf.st_mode & 0777) | 01);
|
|
}
|
|
|
|
/*
|
|
* Reposition the job by changing the modification time of
|
|
* the control file.
|
|
*/
|
|
touch(q)
|
|
struct queue *q;
|
|
{
|
|
struct timeval tvp[2];
|
|
|
|
tvp[0].tv_sec = tvp[1].tv_sec = --mtime;
|
|
tvp[0].tv_usec = tvp[1].tv_usec = 0;
|
|
return (utimes(q->q_name, tvp));
|
|
}
|
|
|
|
/*
|
|
* Checks if specified job name is in the printer's queue.
|
|
* Returns: negative (-1) if argument name is not in the queue.
|
|
*/
|
|
doarg(job)
|
|
char *job;
|
|
{
|
|
register struct queue **qq;
|
|
register int jobnum, n;
|
|
register char *cp, *machine;
|
|
int cnt = 0;
|
|
FILE *fp;
|
|
|
|
/*
|
|
* Look for a job item consisting of system name, colon, number
|
|
* (example: ucbarpa:114)
|
|
*/
|
|
if ((cp = index(job, ':')) != NULL) {
|
|
machine = job;
|
|
*cp++ = '\0';
|
|
job = cp;
|
|
} else
|
|
machine = NULL;
|
|
|
|
/*
|
|
* Check for job specified by number (example: 112 or 235ucbarpa).
|
|
*/
|
|
if (isdigit(*job)) {
|
|
jobnum = 0;
|
|
do
|
|
jobnum = jobnum * 10 + (*job++ - '0');
|
|
while (isdigit(*job));
|
|
for (qq = queue + nitems; --qq >= queue; ) {
|
|
n = 0;
|
|
for (cp = (*qq)->q_name+3; isdigit(*cp); )
|
|
n = n * 10 + (*cp++ - '0');
|
|
if (jobnum != n)
|
|
continue;
|
|
if (*job && strcmp(job, cp) != 0)
|
|
continue;
|
|
if (machine != NULL && strcmp(machine, cp) != 0)
|
|
continue;
|
|
if (touch(*qq) == 0) {
|
|
printf("\tmoved %s\n", (*qq)->q_name);
|
|
cnt++;
|
|
}
|
|
}
|
|
return (cnt);
|
|
}
|
|
/*
|
|
* Process item consisting of owner's name (example: henry).
|
|
*/
|
|
for (qq = queue + nitems; --qq >= queue; ) {
|
|
if ((fp = fopen((*qq)->q_name, "r")) == NULL)
|
|
continue;
|
|
while (getline(fp) > 0)
|
|
if (line[0] == 'P')
|
|
break;
|
|
(void) fclose(fp);
|
|
if (line[0] != 'P' || strcmp(job, line+1) != 0)
|
|
continue;
|
|
if (touch(*qq) == 0) {
|
|
printf("\tmoved %s\n", (*qq)->q_name);
|
|
cnt++;
|
|
}
|
|
}
|
|
return (cnt);
|
|
}
|
|
|
|
/*
|
|
* Enable everything and start printer (undo `down').
|
|
*/
|
|
up(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
register int do_all, status;
|
|
|
|
if (argc == 1) {
|
|
printf("Usage: up {all | printer ...}\n");
|
|
return;
|
|
}
|
|
|
|
do_all = (argc == 2 && strcmp(argv[1], "all") == 0);
|
|
for (;;) {
|
|
printer = do_all ? next_printer() : *++argv;
|
|
if (printer == NULL)
|
|
break;
|
|
status = pgetent(line, printer);
|
|
if (status < 0)
|
|
printf("cannot open printer description file\n");
|
|
else if (status == 0)
|
|
printf("unknown printer %s\n", printer);
|
|
else
|
|
startpr(2);
|
|
}
|
|
}
|
|
|
|
#define PRBUF_SIZE 200
|
|
|
|
static char *
|
|
next_printer()
|
|
{
|
|
static char prbuf[PRBUF_SIZE];
|
|
register int namelen;
|
|
register char *p = NULL;
|
|
|
|
if (getprent(line) > 0) {
|
|
namelen = strcspn(line, "|:");
|
|
if (namelen >= PRBUF_SIZE)
|
|
printf("%s: name too long\n", line);
|
|
else {
|
|
(void)strncpy(prbuf, line, namelen);
|
|
prbuf[namelen] = '\0';
|
|
p = prbuf;
|
|
}
|
|
}
|
|
return p;
|
|
}
|