360d4ad5ab
overflow patches that were "near" to where these operations are taking place. The buffer overflows are from OpenBSD. The setuid/seteuid patches are from NetBSD by way of OpenBSD (they changed them a little), at least from my read of the tree. This is the first of a series of OpenBSD lpr/et al merges. It (and them) should be merged back into 2.2 and/or 2.1 (if requested) branches when they have been shaken out in -current. Obtained from: OpenBSD
486 lines
11 KiB
C
486 lines
11 KiB
C
/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)displayq.c 8.4 (Berkeley) 4/28/95";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/file.h>
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#include <signal.h>
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#include <fcntl.h>
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#include <dirent.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include "lp.h"
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#include "lp.local.h"
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#include "pathnames.h"
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/*
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* Routines to display the state of the queue.
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*/
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#define JOBCOL 40 /* column for job # in -l format */
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#define OWNCOL 7 /* start of Owner column in normal */
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#define SIZCOL 62 /* start of Size column in normal */
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/*
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* Stuff for handling job specifications
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*/
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extern uid_t uid, euid;
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static int col; /* column on screen */
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static char current[40]; /* current file being printed */
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static char file[132]; /* print file name */
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static int first; /* first file in ``files'' column? */
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static int garbage; /* # of garbage cf files */
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static int lflag; /* long output option */
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static int rank; /* order to be printed (-1=none, 0=active) */
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static long totsize; /* total print job size in bytes */
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static char *head0 = "Rank Owner Job Files";
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static char *head1 = "Total Size\n";
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static void alarmhandler __P((int));
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/*
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* Display the current state of the queue. Format = 1 if long format.
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*/
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void
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displayq(format)
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int format;
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{
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register struct queue *q;
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register int i, nitems, fd, ret;
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register char *cp;
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struct queue **queue;
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struct stat statb;
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FILE *fp;
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void (*savealrm)(int);
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lflag = format;
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totsize = 0;
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rank = -1;
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if ((i = cgetent(&bp, printcapdb, printer)) == -2)
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fatal("can't open printer description file");
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else if (i == -1)
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fatal("unknown printer");
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else if (i == -3)
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fatal("potential reference loop detected in printcap file");
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if (cgetstr(bp, "lp", &LP) < 0)
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LP = _PATH_DEFDEVLP;
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if (cgetstr(bp, "rp", &RP) < 0)
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RP = DEFLP;
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if (cgetstr(bp, "sd", &SD) < 0)
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SD = _PATH_DEFSPOOL;
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if (cgetstr(bp,"lo", &LO) < 0)
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LO = DEFLOCK;
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if (cgetstr(bp, "st", &ST) < 0)
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ST = DEFSTAT;
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cgetstr(bp, "rm", &RM);
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if ((cp = checkremote()))
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printf("Warning: %s\n", cp);
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/*
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* Print out local queue
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* Find all the control files in the spooling directory
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*/
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seteuid(euid);
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if (chdir(SD) < 0)
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fatal("cannot chdir to spooling directory");
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seteuid(uid);
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if ((nitems = getq(&queue)) < 0)
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fatal("cannot examine spooling area\n");
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seteuid(euid);
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ret = stat(LO, &statb);
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seteuid(uid);
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if (ret >= 0) {
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if (statb.st_mode & 0100) {
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if (remote)
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printf("%s: ", host);
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printf("Warning: %s is down: ", printer);
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seteuid(euid);
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fd = open(ST, O_RDONLY);
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seteuid(uid);
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if (fd >= 0) {
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(void) flock(fd, LOCK_SH);
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while ((i = read(fd, line, sizeof(line))) > 0)
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(void) fwrite(line, 1, i, stdout);
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(void) close(fd); /* unlocks as well */
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} else
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putchar('\n');
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}
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if (statb.st_mode & 010) {
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if (remote)
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printf("%s: ", host);
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printf("Warning: %s queue is turned off\n", printer);
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}
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}
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if (nitems) {
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seteuid(euid);
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fp = fopen(LO, "r");
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seteuid(uid);
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if (fp == NULL)
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warn();
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else {
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/* get daemon pid */
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cp = current;
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while ((i = getc(fp)) != EOF && i != '\n')
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*cp++ = i;
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*cp = '\0';
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i = atoi(current);
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if (i <= 0) {
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ret = -1;
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} else {
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seteuid(euid);
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ret = kill(i, 0);
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seteuid(uid);
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}
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if (ret < 0) {
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warn();
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} else {
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/* read current file name */
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cp = current;
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while ((i = getc(fp)) != EOF && i != '\n')
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*cp++ = i;
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*cp = '\0';
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/*
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* Print the status file.
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*/
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if (remote)
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printf("%s: ", host);
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seteuid(euid);
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fd = open(ST, O_RDONLY);
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seteuid(uid);
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if (fd >= 0) {
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(void) flock(fd, LOCK_SH);
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while ((i = read(fd, line, sizeof(line))) > 0)
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(void) fwrite(line, 1, i, stdout);
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(void) close(fd); /* unlocks as well */
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} else
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putchar('\n');
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}
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(void) fclose(fp);
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}
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/*
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* Now, examine the control files and print out the jobs to
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* be done for each user.
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*/
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if (!lflag)
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header();
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for (i = 0; i < nitems; i++) {
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q = queue[i];
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inform(q->q_name);
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free(q);
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}
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free(queue);
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}
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if (!remote) {
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if (nitems == 0)
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puts("no entries");
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return;
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}
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/*
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* Print foreign queue
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* Note that a file in transit may show up in either queue.
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*/
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if (nitems)
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putchar('\n');
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(void) snprintf(line, sizeof(line), "%c%s", format + '\3', RP);
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cp = line;
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for (i = 0; i < requests && cp-line+10 < sizeof(line); i++) {
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cp += strlen(cp);
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(void) sprintf(cp, " %d", requ[i]);
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}
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for (i = 0; i < users && cp - line + 1 + strlen(user[i]) <
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sizeof(line); i++) {
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cp += strlen(cp);
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*cp++ = ' ';
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(void) strcpy(cp, user[i]);
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}
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strcat(line, "\n");
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savealrm = signal(SIGALRM, alarmhandler);
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alarm(10);
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fd = getport(RM, 0);
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(void)signal(SIGALRM, savealrm);
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if (fd < 0) {
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if (from != host)
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printf("%s: ", host);
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printf("connection to %s is down\n", RM);
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}
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else {
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i = strlen(line);
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if (write(fd, line, i) != i)
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fatal("Lost connection");
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while ((i = read(fd, line, sizeof(line))) > 0)
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(void) fwrite(line, 1, i, stdout);
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(void) close(fd);
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}
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}
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/*
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* Print a warning message if there is no daemon present.
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*/
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void
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warn()
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{
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if (remote)
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printf("\n%s: ", host);
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puts("Warning: no daemon present");
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current[0] = '\0';
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}
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/*
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* Print the header for the short listing format
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*/
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void
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header()
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{
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printf(head0);
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col = strlen(head0)+1;
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blankfill(SIZCOL);
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printf(head1);
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}
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void
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inform(cf)
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char *cf;
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{
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register int j;
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FILE *cfp;
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/*
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* There's a chance the control file has gone away
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* in the meantime; if this is the case just keep going
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*/
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seteuid(euid);
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if ((cfp = fopen(cf, "r")) == NULL)
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return;
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seteuid(uid);
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if (rank < 0)
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rank = 0;
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if (remote || garbage || strcmp(cf, current))
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rank++;
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j = 0;
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while (getline(cfp)) {
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switch (line[0]) {
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case 'P': /* Was this file specified in the user's list? */
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if (!inlist(line+1, cf)) {
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fclose(cfp);
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return;
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}
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if (lflag) {
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printf("\n%s: ", line+1);
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col = strlen(line+1) + 2;
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prank(rank);
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blankfill(JOBCOL);
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printf(" [job %s]\n", cf+3);
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} else {
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col = 0;
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prank(rank);
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blankfill(OWNCOL);
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printf("%-10s %-3d ", line+1, atoi(cf+3));
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col += 16;
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first = 1;
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}
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continue;
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default: /* some format specifer and file name? */
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if (line[0] < 'a' || line[0] > 'z')
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continue;
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if (j == 0 || strcmp(file, line+1) != 0) {
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(void) strncpy(file, line+1, sizeof(file) - 1);
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file[sizeof(file) - 1] = '\0';
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}
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j++;
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continue;
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case 'N':
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show(line+1, file, j);
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file[0] = '\0';
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j = 0;
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}
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}
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fclose(cfp);
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if (!lflag) {
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blankfill(SIZCOL);
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printf("%ld bytes\n", totsize);
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totsize = 0;
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}
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}
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int
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inlist(name, file)
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char *name, *file;
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{
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register int *r, n;
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register char **u, *cp;
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if (users == 0 && requests == 0)
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return(1);
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/*
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* Check to see if it's in the user list
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*/
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for (u = user; u < &user[users]; u++)
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if (!strcmp(*u, name))
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return(1);
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/*
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* Check the request list
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*/
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for (n = 0, cp = file+3; isdigit(*cp); )
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n = n * 10 + (*cp++ - '0');
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for (r = requ; r < &requ[requests]; r++)
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if (*r == n && !strcmp(cp, from))
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return(1);
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return(0);
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}
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void
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show(nfile, file, copies)
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register char *nfile, *file;
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int copies;
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{
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if (strcmp(nfile, " ") == 0)
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nfile = "(standard input)";
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if (lflag)
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ldump(nfile, file, copies);
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else
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dump(nfile, file, copies);
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}
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/*
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* Fill the line with blanks to the specified column
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*/
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void
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blankfill(n)
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register int n;
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{
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while (col++ < n)
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putchar(' ');
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}
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/*
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* Give the abbreviated dump of the file names
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*/
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void
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dump(nfile, file, copies)
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char *nfile, *file;
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int copies;
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{
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register short n, fill;
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struct stat lbuf;
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/*
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* Print as many files as will fit
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* (leaving room for the total size)
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*/
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fill = first ? 0 : 2; /* fill space for ``, '' */
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if (((n = strlen(nfile)) + col + fill) >= SIZCOL-4) {
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if (col < SIZCOL) {
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printf(" ..."), col += 4;
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blankfill(SIZCOL);
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}
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} else {
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if (first)
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first = 0;
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else
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printf(", ");
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printf("%s", nfile);
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col += n+fill;
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}
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seteuid(euid);
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if (*file && !stat(file, &lbuf))
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totsize += copies * lbuf.st_size;
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seteuid(uid);
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}
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/*
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* Print the long info about the file
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*/
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void
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ldump(nfile, file, copies)
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char *nfile, *file;
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int copies;
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{
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struct stat lbuf;
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putchar('\t');
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if (copies > 1)
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printf("%-2d copies of %-19s", copies, nfile);
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else
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printf("%-32s", nfile);
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if (*file && !stat(file, &lbuf))
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printf(" %qd bytes", lbuf.st_size);
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else
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printf(" ??? bytes");
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putchar('\n');
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}
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/*
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* Print the job's rank in the queue,
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* update col for screen management
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*/
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void
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prank(n)
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int n;
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{
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char rline[100];
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static char *r[] = {
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"th", "st", "nd", "rd", "th", "th", "th", "th", "th", "th"
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};
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if (n == 0) {
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printf("active");
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col += 6;
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return;
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}
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if ((n/10)%10 == 1)
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(void)snprintf(rline, sizeof(rline), "%dth", n);
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else
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(void)snprintf(rline, sizeof(rline), "%d%s", n, r[n%10]);
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col += strlen(rline);
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printf("%s", rline);
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}
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void
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alarmhandler(signo)
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int signo;
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{
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/* ignored */
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}
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