1/* 2 * Copyright 1997 Massachusetts Institute of Technology 3 * 4 * Permission to use, copy, modify, and distribute this software and 5 * its documentation for any purpose and without fee is hereby 6 * granted, provided that both the above copyright notice and this 7 * permission notice appear in all copies, that both the above 8 * copyright notice and this permission notice appear in all 9 * supporting documentation, and that the name of M.I.T. not be used 10 * in advertising or publicity pertaining to distribution of the 11 * software without specific, written prior permission. M.I.T. makes 12 * no representations about the suitability of this software for any 13 * purpose. It is provided "as is" without express or implied 14 * warranty. 15 * 16 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS 17 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, 18 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT 20 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 23 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 26 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30static const char copyright[] = 31 "Copyright (C) 1997, Massachusetts Institute of Technology\r\n"; 32static const char rcsid[] =
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33 "$FreeBSD: head/usr.sbin/lpr/chkprintcap/chkprintcap.c 70520 2000-12-30 20:56:04Z phk $";
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33 "$FreeBSD: head/usr.sbin/lpr/chkprintcap/chkprintcap.c 88004 2001-12-15 23:35:55Z gad $"; |
34 35#include <sys/types.h> 36#include <sys/queue.h> 37#include <sys/stat.h> 38 39#include <err.h> 40#include <errno.h> 41#include <grp.h> 42#include <stdio.h> 43#include <string.h> 44#include <stdlib.h> 45#include <unistd.h> 46 47#include <sys/param.h> /* needed for lp.h but not used here */ 48#include <dirent.h> /* ditto */ 49#include "lp.h" 50#include "lp.local.h"
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51#include "pathnames.h" 52#include "skimprintcap.h" |
53 54static void check_spool_dirs(void); 55static int interpret_error(const struct printer *pp, int error); 56static void make_spool_dir(const struct printer *pp); 57static void note_spool_dir(const struct printer *pp, const struct stat *st); 58static void usage(void) __dead2; 59 60static int problems; /* number of problems encountered */ 61 62/* 63 * chkprintcap - check the printcap file for syntactic and semantic errors 64 * Returns the number of problems found. 65 */ 66int 67main(int argc, char **argv) 68{
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67 int c, error, makedirs, more;
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69 struct skiminfo *skres; 70 char *pcap_fname; 71 int c, error, makedirs, more, queuecnt, verbosity; |
72 struct printer myprinter, *pp; 73 74 makedirs = 0;
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75 queuecnt = 0; 76 verbosity = 0; 77 pcap_fname = NULL; |
78 pp = &myprinter; 79
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73 while ((c = getopt(argc, argv, "df:")) != -1) {
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80 while ((c = getopt(argc, argv, "df:v")) != -1) { |
81 switch (c) { 82 case 'd': 83 makedirs = 1; 84 break; 85 86 case 'f':
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80 setprintcap(optarg);
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87 pcap_fname = strdup(optarg); 88 setprintcap(pcap_fname); |
89 break; 90
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91 case 'v': 92 verbosity++; 93 break; 94 |
95 default: 96 usage(); 97 } 98 } 99 100 if (optind != argc) 101 usage(); 102
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103 if (pcap_fname == NULL) 104 pcap_fname = strdup(_PATH_PRINTCAP); 105 106 /* 107 * Skim through the printcap file looking for simple user-mistakes 108 * which will produce the wrong result for the user, but which may 109 * be pretty hard for the user to notice. Such user-mistakes will 110 * only generate warning messages. The (fatal-) problem count will 111 * only be incremented if there is a system problem trying to read 112 * the printcap file. 113 */ 114 skres = skim_printcap(pcap_fname, verbosity); 115 if (skres->fatalerr) 116 return (skres->fatalerr); 117 118 /* 119 * Now use the standard capability-db routines to check the values 120 * in each of the queues defined in the printcap file. 121 */ |
122 more = firstprinter(pp, &error); 123 if (interpret_error(pp, error) && more) 124 goto next; 125 126 while (more) { 127 struct stat stab; 128
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129 queuecnt++; |
130 errno = 0; 131 if (stat(pp->spool_dir, &stab) < 0) { 132 if (errno == ENOENT && makedirs) { 133 make_spool_dir(pp); 134 } else { 135 problems++; 136 warn("%s: %s", pp->printer, pp->spool_dir); 137 } 138 } else { 139 note_spool_dir(pp, &stab); 140 } 141
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110 /* Make other validity checks here... */
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142 /* Make other queue-specific validity checks here... */ |
143 144next: 145 more = nextprinter(pp, &error); 146 if (interpret_error(pp, error) && more) 147 goto next; 148 }
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149 |
150 check_spool_dirs();
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118 return problems;
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151 152 if (queuecnt != skres->entries) { 153 warnx("WARNING: found %d entries when skimming %s,", 154 skres->entries, pcap_fname); 155 warnx("WARNING: but only found %d queues to process!", 156 queuecnt); 157 } 158 return (problems); |
159} 160 161/* 162 * Interpret the error code. Returns 1 if we should skip to the next 163 * record (as this record is unlikely to make sense). If the problem 164 * is very severe, exit. Otherwise, return zero. 165 */ 166static int 167interpret_error(const struct printer *pp, int error) 168{ 169 switch(error) { 170 case PCAPERR_OSERR: 171 err(++problems, "reading printer database"); 172 case PCAPERR_TCLOOP: 173 ++problems; 174 warnx("%s: loop detected in tc= expansion", pp->printer); 175 return 1; 176 case PCAPERR_TCOPEN: 177 warnx("%s: unresolved tc= expansion", pp->printer); 178 return 1; 179 case PCAPERR_SUCCESS: 180 break; 181 default: 182 errx(++problems, "unknown printcap library error %d", error); 183 } 184 return 0; 185} 186 187/* 188 * Keep the list of spool directories. Note that we don't whine 189 * until all spool directories are noted, so that all of the more serious 190 * problems are noted first. We keep the list sorted by st_dev and 191 * st_ino, so that the problem spool directories can be noted in 192 * a single loop. 193 */ 194struct dirlist { 195 LIST_ENTRY(dirlist) link; 196 struct stat stab; 197 char *path; 198 char *printer; 199}; 200 201static LIST_HEAD(, dirlist) dirlist; 202 203static int 204lessp(const struct dirlist *a, const struct dirlist *b) 205{ 206 if (a->stab.st_dev == b->stab.st_dev) 207 return a->stab.st_ino < b->stab.st_ino; 208 return a->stab.st_dev < b->stab.st_dev; 209} 210 211static int 212equal(const struct dirlist *a, const struct dirlist *b) 213{ 214 return ((a->stab.st_dev == b->stab.st_dev) 215 && (a->stab.st_ino == b->stab.st_ino)); 216} 217 218static void 219note_spool_dir(const struct printer *pp, const struct stat *st) 220{ 221 struct dirlist *dp, *dp2, *last; 222 223 dp = malloc(sizeof *dp); 224 if (dp == 0) 225 err(++problems, "malloc(%lu)", (u_long)sizeof *dp); 226 227 dp->stab = *st; 228 dp->printer = strdup(pp->printer); 229 if (dp->printer == 0) 230 err(++problems, "malloc(%lu)", strlen(pp->printer) + 1UL); 231 dp->path = strdup(pp->spool_dir); 232 if (dp->path == 0) 233 err(++problems, "malloc(%lu)", strlen(pp->spool_dir) + 1UL); 234 235 last = 0; 236 LIST_FOREACH(dp2, &dirlist, link) { 237 if(!lessp(dp, dp2)) 238 break; 239 last = dp2; 240 } 241 242 if (last) { 243 LIST_INSERT_AFTER(last, dp, link); 244 } else { 245 LIST_INSERT_HEAD(&dirlist, dp, link); 246 } 247} 248 249static void 250check_spool_dirs(void) 251{ 252 struct dirlist *dp, *dp2; 253 254 for (dp = LIST_FIRST(&dirlist); dp; dp = dp2) { 255 dp2 = LIST_NEXT(dp, link); 256 257 if (dp2 != 0 && equal(dp, dp2)) { 258 ++problems; 259 if (strcmp(dp->path, dp2->path) == 0) { 260 warnx("%s and %s share the same spool, %s", 261 dp->printer, dp2->printer, dp->path); 262 } else { 263 warnx("%s (%s) and %s (%s) are the same " 264 "directory", dp->path, dp->printer, 265 dp2->path, dp2->printer); 266 } 267 continue; 268 } 269 /* Should probably check owners and modes here. */ 270 } 271} 272 273#ifndef SPOOL_DIR_MODE 274#define SPOOL_DIR_MODE (S_IRUSR | S_IWUSR | S_IXUSR \ 275 | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) 276#endif 277 278static void 279make_spool_dir(const struct printer *pp) 280{ 281 char *sd = pp->spool_dir; 282 struct group *gr; 283 struct stat stab; 284 285 if (mkdir(sd, S_IRUSR | S_IXUSR) < 0) { 286 problems++; 287 warn("%s: mkdir %s", pp->printer, sd); 288 return; 289 } 290 gr = getgrnam("daemon"); 291 if (gr == 0) 292 errx(++problems, "cannot locate daemon group"); 293 294 if (chown(sd, pp->daemon_user, gr->gr_gid) < 0) { 295 ++problems; 296 warn("%s: cannot change ownership to %ld:%ld", sd, 297 (long)pp->daemon_user, (long)gr->gr_gid); 298 return; 299 } 300 301 if (chmod(sd, SPOOL_DIR_MODE) < 0) { 302 ++problems; 303 warn("%s: cannot change mode to %lo", sd, (long)SPOOL_DIR_MODE); 304 return; 305 } 306 if (stat(sd, &stab) < 0) 307 err(++problems, "stat: %s", sd); 308 309 note_spool_dir(pp, &stab); 310} 311 312static void 313usage(void) 314{
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275 fprintf(stderr, "usage:\n\tchkprintcap [-d] [-f printcapfile]\n");
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315 fprintf(stderr, "usage:\n\tchkprintcap [-dv] [-f printcapfile]\n"); |
316 exit(1); 317}
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