mdw@git.distorted.org.uk Git - dpkg/blob - src/querycmd.c

   1 /*
   2  * dpkg-query - program for query the dpkg database
   3  * querycmd.c - status enquiry and listing options
   4  *
   5  * Copyright © 1995,1996 Ian Jackson <ijackson@chiark.greenend.org.uk>
   6  * Copyright © 2000,2001 Wichert Akkerman <wakkerma@debian.org>
   7  * Copyright © 2006-2015 Guillem Jover <guillem@debian.org>
   8  * Copyright © 2011 Linaro Limited
   9  * Copyright © 2011 Raphaël Hertzog <hertzog@debian.org>
  10  *
  11  * This is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  23  */
  24
  25 #include <config.h>
  26 #include <compat.h>
  27
  28 #include <sys/types.h>
  29 #include <sys/stat.h>
  30 #include <sys/ioctl.h>
  31
  32 #if HAVE_LOCALE_H
  33 #include <locale.h>
  34 #endif
  35 #include <errno.h>
  36 #include <limits.h>
  37 #include <string.h>
  38 #include <fcntl.h>
  39 #include <dirent.h>
  40 #include <fnmatch.h>
  41 #include <termios.h>
  42 #include <unistd.h>
  43 #include <stdlib.h>
  44 #include <stdio.h>
  45
  46 #include <dpkg/i18n.h>
  47 #include <dpkg/dpkg.h>
  48 #include <dpkg/dpkg-db.h>
  49 #include <dpkg/pkg-array.h>
  50 #include <dpkg/pkg-spec.h>
  51 #include <dpkg/pkg-format.h>
  52 #include <dpkg/pkg-show.h>
  53 #include <dpkg/string.h>
  54 #include <dpkg/path.h>
  55 #include <dpkg/file.h>
  56 #include <dpkg/options.h>
  57
  58 #include "filesdb.h"
  59 #include "infodb.h"
  60 #include "main.h"
  61
  62 static const char *showformat = "${binary:Package}\t${Version}\n";
  63
  64 static int opt_loadavail = 0;
  65
  66 static int getwidth(void) {
  67   int fd;
  68   long res;
  69   struct winsize ws;
  70   const char *columns;
  71   char *endptr;
  72
  73   columns = getenv("COLUMNS");
  74   if (columns) {
  75     errno = 0;
  76     res = strtol(columns, &endptr, 10);
  77     if (errno == 0 && columns != endptr && *endptr == '\0' &&
  78         res > 0 && res < INT_MAX)
  79       return res;
  80   }
  81
  82   if (!isatty(1))
  83     return -1;
  84   else {
  85     res = 80;
  86
  87     fd = open("/dev/tty", O_RDONLY);
  88     if (fd != -1) {
  89       if (ioctl(fd, TIOCGWINSZ, &ws) == 0)
  90         res = ws.ws_col;
  91       close(fd);
  92     }
  93
  94     return res;
  95   }
  96 }
  97
  98 static int
  99 pkg_array_match_patterns(struct pkg_array *array,
 100                          pkg_array_visitor_func *pkg_visitor, void *pkg_data,
 101                          const char *const *argv)
 102 {
 103   int argc, i, ip, *found;
 104   int rc = 0;
 105   struct pkg_spec *ps;
 106
 107   for (argc = 0; argv[argc]; argc++);
 108   found = m_calloc(argc, sizeof(int));
 109
 110   ps = m_malloc(sizeof(*ps) * argc);
 111   for (ip = 0; ip < argc; ip++) {
 112     pkg_spec_init(&ps[ip], PKG_SPEC_PATTERNS | PKG_SPEC_ARCH_WILDCARD);
 113     pkg_spec_parse(&ps[ip], argv[ip]);
 114   }
 115
 116   for (i = 0; i < array->n_pkgs; i++) {
 117     struct pkginfo *pkg;
 118     bool pkg_found = false;
 119
 120     pkg = array->pkgs[i];
 121     for (ip = 0; ip < argc; ip++) {
 122       if (pkg_spec_match_pkg(&ps[ip], pkg, &pkg->installed)) {
 123         pkg_found = true;
 124         found[ip]++;
 125       }
 126     }
 127     if (!pkg_found)
 128       array->pkgs[i] = NULL;
 129   }
 130
 131   pkg_array_foreach(array, pkg_visitor, pkg_data);
 132
 133   for (ip = 0; ip < argc; ip++) {
 134     if (!found[ip]) {
 135       notice(_("no packages found matching %s"), argv[ip]);
 136       rc++;
 137     }
 138     pkg_spec_destroy(&ps[ip]);
 139   }
 140
 141   free(ps);
 142   free(found);
 143
 144   return rc;
 145 }
 146
 147 struct list_format {
 148   bool head;
 149   int nw;
 150   int vw;
 151   int aw;
 152   int dw;
 153 };
 154
 155 static void
 156 list_format_init(struct list_format *fmt, struct pkg_array *array)
 157 {
 158   int w;
 159
 160   if (fmt->nw != 0)
 161     return;
 162
 163   w = getwidth();
 164   if (w == -1) {
 165     int i;
 166
 167     fmt->nw = 14;
 168     fmt->vw = 12;
 169     fmt->aw = 12;
 170     fmt->dw = 33;
 171
 172     for (i = 0; i < array->n_pkgs; i++) {
 173       int plen, vlen, alen, dlen;
 174
 175       if (array->pkgs[i] == NULL)
 176         continue;
 177
 178       plen = str_width(pkg_name(array->pkgs[i], pnaw_nonambig));
 179       vlen = str_width(versiondescribe(&array->pkgs[i]->installed.version,
 180                                        vdew_nonambig));
 181       alen = str_width(dpkg_arch_describe(array->pkgs[i]->installed.arch));
 182       pkgbin_summary(array->pkgs[i], &array->pkgs[i]->installed, &dlen);
 183
 184       if (plen > fmt->nw)
 185         fmt->nw = plen;
 186       if (vlen > fmt->vw)
 187         fmt->vw = vlen;
 188       if (alen > fmt->aw)
 189         fmt->aw = alen;
 190       if (dlen > fmt->dw)
 191         fmt->dw = dlen;
 192     }
 193   } else {
 194     w -= 80;
 195     /* Let's not try to deal with terminals that are too small. */
 196     if (w < 0)
 197       w = 0;
 198     /* Halve that so we can add it to both the name and description. */
 199     w >>= 1;
 200     /* Name width. */
 201     fmt->nw = (14 + (w / 2));
 202     /* Version width. */
 203     fmt->vw = (12 + (w / 4));
 204     /* Architecture width. */
 205     fmt->aw = (12 + (w / 4));
 206     /* Description width. */
 207     fmt->dw = (33 + w);
 208   }
 209 }
 210
 211 static void
 212 list_format_print(struct list_format *fmt,
 213                   int c_want, int c_status, int c_eflag,
 214                   const char *name, const char *version, const char *arch,
 215                   const char *desc, int desc_len)
 216 {
 217   struct str_crop_info ns, vs, as, ds;
 218
 219   str_gen_crop(name, fmt->nw, &ns);
 220   str_gen_crop(version, fmt->vw, &vs);
 221   str_gen_crop(arch, fmt->aw, &as);
 222   str_gen_crop(desc, desc_len, &ds);
 223
 224   printf("%c%c%c %-*.*s %-*.*s %-*.*s %.*s\n", c_want, c_status, c_eflag,
 225          ns.max_bytes, ns.str_bytes, name,
 226          vs.max_bytes, vs.str_bytes, version,
 227          as.max_bytes, as.str_bytes, arch,
 228          ds.str_bytes, desc);
 229 }
 230
 231 static void
 232 list_format_print_header(struct list_format *fmt)
 233 {
 234   int l;
 235
 236   if (fmt->head)
 237     return;
 238
 239   /* TRANSLATORS: This is the header that appears on 'dpkg-query -l'. The
 240    * string should remain under 80 characters. The uppercase letters in
 241    * the state values denote the abbreviated letter that will appear on
 242    * the first three columns, which should ideally match the English one
 243    * (e.g. Remove → supRimeix), see dpkg-query(1) for further details. The
 244    * translated message can use additional lines if needed. */
 245   fputs(_("\
 246 Desired=Unknown/Install/Remove/Purge/Hold\n\
 247 | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend\n\
 248 |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)\n"), stdout);
 249   list_format_print(fmt, '|', '|', '/', _("Name"), _("Version"),
 250                     _("Architecture"), _("Description"), fmt->dw);
 251
 252   /* Status */
 253   printf("+++-");
 254
 255  /* Package name. */
 256   for (l = 0; l < fmt->nw; l++)
 257     printf("=");
 258   printf("-");
 259
 260   /* Version. */
 261   for (l = 0; l < fmt->vw; l++)
 262     printf("=");
 263   printf("-");
 264
 265   /* Architecture. */
 266   for (l = 0; l < fmt->aw; l++)
 267     printf("=");
 268   printf("-");
 269
 270   /* Description. */
 271   for (l = 0; l < fmt->dw; l++)
 272     printf("=");
 273   printf("\n");
 274
 275   fmt->head = true;
 276 }
 277
 278 static void
 279 pkg_array_list_item(struct pkg_array *array, struct pkginfo *pkg, void *pkg_data)
 280 {
 281   struct list_format *fmt = pkg_data;
 282   int l;
 283   const char *pdesc;
 284
 285   list_format_init(fmt, array);
 286   list_format_print_header(fmt);
 287
 288   pdesc = pkgbin_summary(pkg, &pkg->installed, &l);
 289   l = min(l, fmt->dw);
 290
 291   list_format_print(fmt,
 292                     pkg_abbrev_want(pkg),
 293                     pkg_abbrev_status(pkg),
 294                     pkg_abbrev_eflag(pkg),
 295                     pkg_name(pkg, pnaw_nonambig),
 296                     versiondescribe(&pkg->installed.version, vdew_nonambig),
 297                     dpkg_arch_describe(pkg->installed.arch),
 298                     pdesc, l);
 299 }
 300
 301 static int
 302 listpackages(const char *const *argv)
 303 {
 304   struct pkg_array array;
 305   struct pkginfo *pkg;
 306   int i;
 307   int rc = 0;
 308   struct list_format fmt;
 309
 310   if (!opt_loadavail)
 311     modstatdb_open(msdbrw_readonly);
 312   else
 313     modstatdb_open(msdbrw_readonly | msdbrw_available_readonly);
 314
 315   pkg_array_init_from_db(&array);
 316   pkg_array_sort(&array, pkg_sorter_by_nonambig_name_arch);
 317
 318   memset(&fmt, 0, sizeof(fmt));
 319
 320   if (!*argv) {
 321     for (i = 0; i < array.n_pkgs; i++) {
 322       pkg = array.pkgs[i];
 323       if (pkg->status == PKG_STAT_NOTINSTALLED)
 324         array.pkgs[i] = NULL;
 325     }
 326
 327     pkg_array_foreach(&array, pkg_array_list_item, &fmt);
 328   } else {
 329     rc = pkg_array_match_patterns(&array, pkg_array_list_item, &fmt, argv);
 330   }
 331
 332   m_output(stdout, _("<standard output>"));
 333   m_output(stderr, _("<standard error>"));
 334
 335   pkg_array_destroy(&array);
 336   modstatdb_shutdown();
 337
 338   return rc;
 339 }
 340
 341 static int searchoutput(struct filenamenode *namenode) {
 342   struct filepackages_iterator *iter;
 343   struct pkginfo *pkg_owner;
 344   int found;
 345
 346   if (namenode->divert) {
 347     const char *name_from = namenode->divert->camefrom ?
 348                             namenode->divert->camefrom->name : namenode->name;
 349     const char *name_to = namenode->divert->useinstead ?
 350                           namenode->divert->useinstead->name : namenode->name;
 351
 352     if (namenode->divert->pkgset) {
 353       printf(_("diversion by %s from: %s\n"),
 354              namenode->divert->pkgset->name, name_from);
 355       printf(_("diversion by %s to: %s\n"),
 356              namenode->divert->pkgset->name, name_to);
 357     } else {
 358       printf(_("local diversion from: %s\n"), name_from);
 359       printf(_("local diversion to: %s\n"), name_to);
 360     }
 361   }
 362   found= 0;
 363
 364   iter = filepackages_iter_new(namenode);
 365   while ((pkg_owner = filepackages_iter_next(iter))) {
 366     if (found)
 367       fputs(", ", stdout);
 368     fputs(pkg_name(pkg_owner, pnaw_nonambig), stdout);
 369     found++;
 370   }
 371   filepackages_iter_free(iter);
 372
 373   if (found) printf(": %s\n",namenode->name);
 374   return found + (namenode->divert ? 1 : 0);
 375 }
 376
 377 static int
 378 searchfiles(const char *const *argv)
 379 {
 380   struct filenamenode *namenode;
 381   struct fileiterator *iter;
 382   const char *thisarg;
 383   int found;
 384   int failures = 0;
 385   struct varbuf path = VARBUF_INIT;
 386   static struct varbuf vb;
 387
 388   if (!*argv)
 389     badusage(_("--search needs at least one file name pattern argument"));
 390
 391   modstatdb_open(msdbrw_readonly);
 392   ensure_allinstfiles_available_quiet();
 393   ensure_diversions();
 394
 395   while ((thisarg = *argv++) != NULL) {
 396     found= 0;
 397
 398     if (!strchr("*[?/",*thisarg)) {
 399       varbuf_reset(&vb);
 400       varbuf_add_char(&vb, '*');
 401       varbuf_add_str(&vb, thisarg);
 402       varbuf_add_char(&vb, '*');
 403       varbuf_end_str(&vb);
 404       thisarg= vb.buf;
 405     }
 406     if (!strpbrk(thisarg, "*[?\\")) {
 407       /* Trim trailing ‘/’ and ‘/.’ from the argument if it is not
 408        * a pattern, just a pathname. */
 409       varbuf_reset(&path);
 410       varbuf_add_str(&path, thisarg);
 411       varbuf_end_str(&path);
 412       varbuf_trunc(&path, path_trim_slash_slashdot(path.buf));
 413
 414       namenode = findnamenode(path.buf, 0);
 415       found += searchoutput(namenode);
 416     } else {
 417       iter = files_db_iter_new();
 418       while ((namenode = files_db_iter_next(iter)) != NULL) {
 419         if (fnmatch(thisarg,namenode->name,0)) continue;
 420         found+= searchoutput(namenode);
 421       }
 422       files_db_iter_free(iter);
 423     }
 424     if (!found) {
 425       notice(_("no path found matching pattern %s"), thisarg);
 426       failures++;
 427       m_output(stderr, _("<standard error>"));
 428     } else {
 429       m_output(stdout, _("<standard output>"));
 430     }
 431   }
 432   modstatdb_shutdown();
 433
 434   varbuf_destroy(&path);
 435
 436   return failures;
 437 }
 438
 439 static int
 440 enqperpackage(const char *const *argv)
 441 {
 442   const char *thisarg;
 443   struct fileinlist *file;
 444   struct pkginfo *pkg;
 445   struct filenamenode *namenode;
 446   int failures = 0;
 447
 448   if (!*argv)
 449     badusage(_("--%s needs at least one package name argument"), cipaction->olong);
 450
 451   if (cipaction->arg_int == act_printavail)
 452     modstatdb_open(msdbrw_readonly | msdbrw_available_readonly);
 453   else
 454     modstatdb_open(msdbrw_readonly);
 455
 456   while ((thisarg = *argv++) != NULL) {
 457     pkg = dpkg_options_parse_pkgname(cipaction, thisarg);
 458
 459     switch (cipaction->arg_int) {
 460     case act_status:
 461       if (pkg->status == PKG_STAT_NOTINSTALLED &&
 462           pkg->priority == PKG_PRIO_UNKNOWN &&
 463           str_is_unset(pkg->section) &&
 464           !pkg->files &&
 465           pkg->want == PKG_WANT_UNKNOWN &&
 466           !pkg_is_informative(pkg, &pkg->installed)) {
 467         notice(_("package '%s' is not installed and no information is available"),
 468                pkg_name(pkg, pnaw_nonambig));
 469         failures++;
 470       } else {
 471         writerecord(stdout, _("<standard output>"), pkg, &pkg->installed);
 472       }
 473       break;
 474     case act_printavail:
 475       if (!pkg_is_informative(pkg, &pkg->available)) {
 476         notice(_("package '%s' is not available"),
 477                pkgbin_name(pkg, &pkg->available, pnaw_nonambig));
 478         failures++;
 479       } else {
 480         writerecord(stdout, _("<standard output>"), pkg, &pkg->available);
 481       }
 482       break;
 483     case act_listfiles:
 484       switch (pkg->status) {
 485       case PKG_STAT_NOTINSTALLED:
 486         notice(_("package '%s' is not installed"),
 487                pkg_name(pkg, pnaw_nonambig));
 488         failures++;
 489         break;
 490       default:
 491         ensure_packagefiles_available(pkg);
 492         ensure_diversions();
 493         file= pkg->clientdata->files;
 494         if (!file) {
 495           printf(_("Package '%s' does not contain any files (!)\n"),
 496                  pkg_name(pkg, pnaw_nonambig));
 497         } else {
 498           while (file) {
 499             namenode= file->namenode;
 500             puts(namenode->name);
 501             if (namenode->divert && !namenode->divert->camefrom) {
 502               if (!namenode->divert->pkgset)
 503                 printf(_("locally diverted to: %s\n"),
 504                        namenode->divert->useinstead->name);
 505               else if (pkg->set == namenode->divert->pkgset)
 506                 printf(_("package diverts others to: %s\n"),
 507                        namenode->divert->useinstead->name);
 508               else
 509                 printf(_("diverted by %s to: %s\n"),
 510                        namenode->divert->pkgset->name,
 511                        namenode->divert->useinstead->name);
 512             }
 513             file= file->next;
 514           }
 515         }
 516         break;
 517       }
 518       break;
 519     default:
 520       internerr("unknown action '%d'", cipaction->arg_int);
 521     }
 522
 523     if (*argv != NULL)
 524       putchar('\n');
 525
 526     m_output(stdout, _("<standard output>"));
 527   }
 528
 529   if (failures) {
 530     fputs(_("Use dpkg --info (= dpkg-deb --info) to examine archive files,\n"
 531          "and dpkg --contents (= dpkg-deb --contents) to list their contents.\n"),stderr);
 532     m_output(stderr, _("<standard error>"));
 533   }
 534   modstatdb_shutdown();
 535
 536   return failures;
 537 }
 538
 539 static void
 540 pkg_array_show_item(struct pkg_array *array, struct pkginfo *pkg, void *pkg_data)
 541 {
 542   struct pkg_format_node *fmt = pkg_data;
 543
 544   pkg_format_show(fmt, pkg, &pkg->installed);
 545 }
 546
 547 static int
 548 showpackages(const char *const *argv)
 549 {
 550   struct dpkg_error err;
 551   struct pkg_array array;
 552   struct pkginfo *pkg;
 553   struct pkg_format_node *fmt;
 554   int i;
 555   int rc = 0;
 556
 557   fmt = pkg_format_parse(showformat, &err);
 558   if (!fmt) {
 559     notice(_("error in show format: %s"), err.str);
 560     dpkg_error_destroy(&err);
 561     rc++;
 562     return rc;
 563   }
 564
 565   if (!opt_loadavail)
 566     modstatdb_open(msdbrw_readonly);
 567   else
 568     modstatdb_open(msdbrw_readonly | msdbrw_available_readonly);
 569
 570   pkg_array_init_from_db(&array);
 571   pkg_array_sort(&array, pkg_sorter_by_nonambig_name_arch);
 572
 573   if (!*argv) {
 574     for (i = 0; i < array.n_pkgs; i++) {
 575       pkg = array.pkgs[i];
 576       if (pkg->status == PKG_STAT_NOTINSTALLED)
 577         continue;
 578       pkg_format_show(fmt, pkg, &pkg->installed);
 579     }
 580   } else {
 581     rc = pkg_array_match_patterns(&array, pkg_array_show_item, fmt, argv);
 582   }
 583
 584   m_output(stdout, _("<standard output>"));
 585   m_output(stderr, _("<standard error>"));
 586
 587   pkg_array_destroy(&array);
 588   pkg_format_free(fmt);
 589   modstatdb_shutdown();
 590
 591   return rc;
 592 }
 593
 594 static bool
 595 pkg_infodb_is_internal(const char *filetype)
 596 {
 597   /* Do not expose internal database files. */
 598   if (strcmp(filetype, LISTFILE) == 0 ||
 599       strcmp(filetype, CONFFILESFILE) == 0)
 600     return true;
 601
 602   if (strlen(filetype) > MAXCONTROLFILENAME)
 603     return true;
 604
 605   return false;
 606 }
 607
 608 static void
 609 pkg_infodb_check_filetype(const char *filetype)
 610 {
 611   const char *c;
 612
 613   /* Validate control file name for sanity. */
 614   for (c = "/."; *c; c++)
 615     if (strchr(filetype, *c))
 616       badusage(_("control file contains %c"), *c);
 617 }
 618
 619 static void
 620 pkg_infodb_print_filename(const char *filename, const char *filetype)
 621 {
 622   if (pkg_infodb_is_internal(filetype))
 623     return;
 624
 625   printf("%s\n", filename);
 626 }
 627
 628 static void
 629 pkg_infodb_print_filetype(const char *filename, const char *filetype)
 630 {
 631   if (pkg_infodb_is_internal(filetype))
 632     return;
 633
 634   printf("%s\n", filetype);
 635 }
 636
 637 static void
 638 control_path_file(struct pkginfo *pkg, const char *control_file)
 639 {
 640   const char *control_path;
 641   struct stat st;
 642
 643   control_path = pkg_infodb_get_file(pkg, &pkg->installed, control_file);
 644   if (stat(control_path, &st) < 0)
 645     return;
 646   if (!S_ISREG(st.st_mode))
 647     return;
 648
 649   pkg_infodb_print_filename(control_path, control_file);
 650 }
 651
 652 static int
 653 control_path(const char *const *argv)
 654 {
 655   struct pkginfo *pkg;
 656   const char *pkgname;
 657   const char *control_file;
 658
 659   pkgname = *argv++;
 660   if (!pkgname)
 661     badusage(_("--%s needs at least one package name argument"),
 662              cipaction->olong);
 663
 664   control_file = *argv++;
 665   if (control_file && *argv)
 666     badusage(_("--%s takes at most two arguments"), cipaction->olong);
 667
 668   if (control_file)
 669     pkg_infodb_check_filetype(control_file);
 670
 671   modstatdb_open(msdbrw_readonly);
 672
 673   pkg = dpkg_options_parse_pkgname(cipaction, pkgname);
 674   if (pkg->status == PKG_STAT_NOTINSTALLED)
 675     ohshit(_("package '%s' is not installed"),
 676            pkg_name(pkg, pnaw_nonambig));
 677
 678   if (control_file)
 679     control_path_file(pkg, control_file);
 680   else
 681     pkg_infodb_foreach(pkg, &pkg->installed, pkg_infodb_print_filename);
 682
 683   modstatdb_shutdown();
 684
 685   return 0;
 686 }
 687
 688 static int
 689 control_list(const char *const *argv)
 690 {
 691   struct pkginfo *pkg;
 692   const char *pkgname;
 693
 694   pkgname = *argv++;
 695   if (!pkgname || *argv)
 696     badusage(_("--%s takes one package name argument"), cipaction->olong);
 697
 698   modstatdb_open(msdbrw_readonly);
 699
 700   pkg = dpkg_options_parse_pkgname(cipaction, pkgname);
 701   if (pkg->status == PKG_STAT_NOTINSTALLED)
 702     ohshit(_("package '%s' is not installed"), pkg_name(pkg, pnaw_nonambig));
 703
 704   pkg_infodb_foreach(pkg, &pkg->installed, pkg_infodb_print_filetype);
 705
 706   modstatdb_shutdown();
 707
 708   return 0;
 709 }
 710
 711 static int
 712 control_show(const char *const *argv)
 713 {
 714   struct pkginfo *pkg;
 715   const char *pkgname;
 716   const char *filename;
 717   const char *control_file;
 718
 719   pkgname = *argv++;
 720   if (!pkgname || !*argv)
 721     badusage(_("--%s takes exactly two arguments"),
 722              cipaction->olong);
 723
 724   control_file = *argv++;
 725   if (!control_file || *argv)
 726     badusage(_("--%s takes exactly two arguments"), cipaction->olong);
 727
 728   pkg_infodb_check_filetype(control_file);
 729
 730   modstatdb_open(msdbrw_readonly);
 731
 732   pkg = dpkg_options_parse_pkgname(cipaction, pkgname);
 733   if (pkg->status == PKG_STAT_NOTINSTALLED)
 734     ohshit(_("package '%s' is not installed"), pkg_name(pkg, pnaw_nonambig));
 735
 736   if (pkg_infodb_has_file(pkg, &pkg->installed, control_file))
 737     filename = pkg_infodb_get_file(pkg, &pkg->installed, control_file);
 738   else
 739     ohshit(_("control file '%s' does not exist"), control_file);
 740
 741   modstatdb_shutdown();
 742
 743   file_show(filename);
 744
 745   return 0;
 746 }
 747
 748 static void DPKG_ATTR_NORET
 749 printversion(const struct cmdinfo *ci, const char *value)
 750 {
 751   printf(_("Debian %s package management program query tool version %s.\n"),
 752          DPKGQUERY, PACKAGE_RELEASE);
 753   printf(_(
 754 "This is free software; see the GNU General Public License version 2 or\n"
 755 "later for copying conditions. There is NO warranty.\n"));
 756
 757   m_output(stdout, _("<standard output>"));
 758
 759   exit(0);
 760 }
 761
 762 static void DPKG_ATTR_NORET
 763 usage(const struct cmdinfo *ci, const char *value)
 764 {
 765   printf(_(
 766 "Usage: %s [<option> ...] <command>\n"
 767 "\n"), DPKGQUERY);
 768
 769   printf(_(
 770 "Commands:\n"
 771 "  -s|--status <package> ...        Display package status details.\n"
 772 "  -p|--print-avail <package> ...   Display available version details.\n"
 773 "  -L|--listfiles <package> ...     List files 'owned' by package(s).\n"
 774 "  -l|--list [<pattern> ...]        List packages concisely.\n"
 775 "  -W|--show [<pattern> ...]        Show information on package(s).\n"
 776 "  -S|--search <pattern> ...        Find package(s) owning file(s).\n"
 777 "     --control-list <package>      Print the package control file list.\n"
 778 "     --control-show <package> <file>\n"
 779 "                                   Show the package control file.\n"
 780 "  -c|--control-path <package> [<file>]\n"
 781 "                                   Print path for package control file.\n"
 782 "\n"));
 783
 784   printf(_(
 785 "  -?, --help                       Show this help message.\n"
 786 "      --version                    Show the version.\n"
 787 "\n"));
 788
 789   printf(_(
 790 "Options:\n"
 791 "  --admindir=<directory>           Use <directory> instead of %s.\n"
 792 "  --load-avail                     Use available file on --show and --list.\n"
 793 "  -f|--showformat=<format>         Use alternative format for --show.\n"
 794 "\n"), ADMINDIR);
 795
 796   printf(_(
 797 "Format syntax:\n"
 798 "  A format is a string that will be output for each package. The format\n"
 799 "  can include the standard escape sequences \\n (newline), \\r (carriage\n"
 800 "  return) or \\\\ (plain backslash). Package information can be included\n"
 801 "  by inserting variable references to package fields using the ${var[;width]}\n"
 802 "  syntax. Fields will be right-aligned unless the width is negative in which\n"
 803 "  case left alignment will be used.\n"));
 804
 805   m_output(stdout, _("<standard output>"));
 806
 807   exit(0);
 808 }
 809
 810 static const char printforhelp[] = N_(
 811 "Use --help for help about querying packages.");
 812
 813 static const char *admindir;
 814
 815 /* This table has both the action entries in it and the normal options.
 816  * The action entries are made with the ACTION macro, as they all
 817  * have a very similar structure. */
 818 static const struct cmdinfo cmdinfos[]= {
 819   ACTION( "listfiles",                      'L', act_listfiles,     enqperpackage   ),
 820   ACTION( "status",                         's', act_status,        enqperpackage   ),
 821   ACTION( "print-avail",                    'p', act_printavail,    enqperpackage   ),
 822   ACTION( "list",                           'l', act_listpackages,  listpackages    ),
 823   ACTION( "search",                         'S', act_searchfiles,   searchfiles     ),
 824   ACTION( "show",                           'W', act_listpackages,  showpackages    ),
 825   ACTION( "control-path",                   'c', act_controlpath,   control_path    ),
 826   ACTION( "control-list",                    0,  act_controllist,   control_list    ),
 827   ACTION( "control-show",                    0,  act_controlshow,   control_show    ),
 828
 829   { "admindir",   0,   1, NULL, &admindir,   NULL          },
 830   { "load-avail", 0,   0, &opt_loadavail, NULL, NULL, 1    },
 831   { "showformat", 'f', 1, NULL, &showformat, NULL          },
 832   { "help",       '?', 0, NULL, NULL,        usage         },
 833   { "version",    0,   0, NULL, NULL,        printversion  },
 834   {  NULL,        0,   0, NULL, NULL,        NULL          }
 835 };
 836
 837 int main(int argc, const char *const *argv) {
 838   int ret;
 839
 840   dpkg_set_report_piped_mode(_IOFBF);
 841   dpkg_locales_init(PACKAGE);
 842   dpkg_program_init("dpkg-query");
 843   dpkg_options_parse(&argv, cmdinfos, printforhelp);
 844
 845   admindir = dpkg_db_set_dir(admindir);
 846
 847   if (!cipaction) badusage(_("need an action option"));
 848
 849   filesdbinit();
 850
 851   ret = cipaction->action(argv);
 852
 853   dpkg_program_done();
 854
 855   return !!ret;
 856 }