1/* Copyright (c) 1998-2021 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Thorsten Kukuk <kukuk@suse.de>, 1998.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19/* getent: get entries from administrative database. */
20
21#include <aliases.h>
22#include <argp.h>
23#include <ctype.h>
24#include <error.h>
25#include <grp.h>
26#include <gshadow.h>
27#include <libintl.h>
28#include <locale.h>
29#include <mcheck.h>
30#include <netdb.h>
31#include <pwd.h>
32#include <shadow.h>
33#include <stdbool.h>
34#include <stdio.h>
35#include <stdlib.h>
36#include <string.h>
37#include <arpa/inet.h>
38#include <arpa/nameser.h>
39#include <netinet/ether.h>
40#include <netinet/in.h>
41#include <sys/socket.h>
42#include <scratch_buffer.h>
43#include <inttypes.h>
44
45/* Get libc version number. */
46#include <version.h>
47
48#define PACKAGE _libc_intl_domainname
49
50/* Name and version of program. */
51static void print_version (FILE *stream, struct argp_state *state);
52void (*argp_program_version_hook) (FILE *, struct argp_state *) = print_version;
53
54/* Short description of parameters. */
55static const char args_doc[] = N_("database [key ...]");
56
57/* Supported options. */
58static const struct argp_option args_options[] =
59 {
60 { "service", 's', N_("CONFIG"), 0, N_("Service configuration to be used") },
61 { "no-idn", 'i', NULL, 0, N_("disable IDN encoding") },
62 { NULL, 0, NULL, 0, NULL },
63 };
64
65/* Short description of program. */
66static const char doc[] = N_("Get entries from administrative database.");
67
68/* Prototype for option handler. */
69static error_t parse_option (int key, char *arg, struct argp_state *state);
70
71/* Function to print some extra text in the help message. */
72static char *more_help (int key, const char *text, void *input);
73
74/* Data structure to communicate with argp functions. */
75static struct argp argp =
76 {
77 args_options, parse_option, args_doc, doc, NULL, more_help
78 };
79
80/* Additional getaddrinfo flags for IDN encoding. */
81static int idn_flags = AI_IDN | AI_CANONIDN;
82
83/* Print the version information. */
84static void
85print_version (FILE *stream, struct argp_state *state)
86{
87 fprintf (stream, "getent %s%s\n", PKGVERSION, VERSION);
88 fprintf (stream, gettext ("\
89Copyright (C) %s Free Software Foundation, Inc.\n\
90This is free software; see the source for copying conditions. There is NO\n\
91warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
92"), "2021");
93 fprintf (stream, gettext ("Written by %s.\n"), "Thorsten Kukuk");
94}
95
96/* This is for aliases */
97static void
98print_aliases (struct aliasent *alias)
99{
100 unsigned int i = 0;
101
102 printf ("%s: ", alias->alias_name);
103 for (i = strlen (alias->alias_name); i < 14; ++i)
104 fputs_unlocked (" ", stdout);
105
106 for (i = 0; i < alias->alias_members_len; ++i)
107 printf ("%s%s",
108 alias->alias_members [i],
109 i + 1 == alias->alias_members_len ? "\n" : ", ");
110}
111
112static int
113aliases_keys (int number, char *key[])
114{
115 int result = 0;
116 int i;
117 struct aliasent *alias;
118
119 if (number == 0)
120 {
121 setaliasent ();
122 while ((alias = getaliasent ()) != NULL)
123 print_aliases (alias);
124 endaliasent ();
125 return result;
126 }
127
128 for (i = 0; i < number; ++i)
129 {
130 alias = getaliasbyname (key[i]);
131
132 if (alias == NULL)
133 result = 2;
134 else
135 print_aliases (alias);
136 }
137
138 return result;
139}
140
141/* This is for ethers */
142static int
143ethers_keys (int number, char *key[])
144{
145 int result = 0;
146 int i;
147
148 if (number == 0)
149 {
150 fprintf (stderr, _("Enumeration not supported on %s\n"), "ethers");
151 return 3;
152 }
153
154 for (i = 0; i < number; ++i)
155 {
156 struct ether_addr *ethp, eth;
157 char buffer [1024], *p;
158
159 ethp = ether_aton (key[i]);
160 if (ethp != NULL)
161 {
162 if (ether_ntohost (buffer, ethp))
163 {
164 result = 2;
165 continue;
166 }
167 p = buffer;
168 }
169 else
170 {
171 if (ether_hostton (key[i], &eth))
172 {
173 result = 2;
174 continue;
175 }
176 p = key[i];
177 ethp = &eth;
178 }
179 printf ("%s %s\n", ether_ntoa (ethp), p);
180 }
181
182 return result;
183}
184
185/* This is for group */
186static void
187print_group (struct group *grp)
188{
189 if (putgrent (grp, stdout) != 0)
190 fprintf (stderr, "error writing group entry: %m\n");
191}
192
193static int
194group_keys (int number, char *key[])
195{
196 int result = 0;
197 int i;
198 struct group *grp;
199
200 if (number == 0)
201 {
202 setgrent ();
203 while ((grp = getgrent ()) != NULL)
204 print_group (grp);
205 endgrent ();
206 return result;
207 }
208
209 for (i = 0; i < number; ++i)
210 {
211 errno = 0;
212 char *ep;
213 gid_t arg_gid = strtoul(key[i], &ep, 10);
214
215 if (errno != EINVAL && *key[i] != '\0' && *ep == '\0')
216 /* Valid numeric gid. */
217 grp = getgrgid (arg_gid);
218 else
219 grp = getgrnam (key[i]);
220
221 if (grp == NULL)
222 result = 2;
223 else
224 print_group (grp);
225 }
226
227 return result;
228}
229
230/* This is for gshadow */
231static void
232print_gshadow (struct sgrp *sg)
233{
234 if (putsgent (sg, stdout) != 0)
235 fprintf (stderr, "error writing gshadow entry: %m\n");
236}
237
238static int
239gshadow_keys (int number, char *key[])
240{
241 int result = 0;
242 int i;
243
244 if (number == 0)
245 {
246 struct sgrp *sg;
247
248 setsgent ();
249 while ((sg = getsgent ()) != NULL)
250 print_gshadow (sg);
251 endsgent ();
252 return result;
253 }
254
255 for (i = 0; i < number; ++i)
256 {
257 struct sgrp *sg;
258
259 sg = getsgnam (key[i]);
260
261 if (sg == NULL)
262 result = 2;
263 else
264 print_gshadow (sg);
265 }
266
267 return result;
268}
269
270/* This is for hosts */
271static void
272print_hosts (struct hostent *host)
273{
274 unsigned int cnt;
275
276 for (cnt = 0; host->h_addr_list[cnt] != NULL; ++cnt)
277 {
278 char buf[INET6_ADDRSTRLEN];
279 const char *ip = inet_ntop (host->h_addrtype, host->h_addr_list[cnt],
280 buf, sizeof (buf));
281
282 printf ("%-15s %s", ip, host->h_name);
283
284 unsigned int i;
285 for (i = 0; host->h_aliases[i] != NULL; ++i)
286 {
287 putchar_unlocked (' ');
288 fputs_unlocked (host->h_aliases[i], stdout);
289 }
290 putchar_unlocked ('\n');
291 }
292}
293
294static int
295hosts_keys (int number, char *key[])
296{
297 int result = 0;
298 int i;
299 struct hostent *host;
300
301 if (number == 0)
302 {
303 sethostent (0);
304 while ((host = gethostent ()) != NULL)
305 print_hosts (host);
306 endhostent ();
307 return result;
308 }
309
310 for (i = 0; i < number; ++i)
311 {
312 struct hostent *host = NULL;
313 char addr[IN6ADDRSZ];
314
315 if (inet_pton (AF_INET6, key[i], &addr) > 0)
316 host = gethostbyaddr (addr, IN6ADDRSZ, AF_INET6);
317 else if (inet_pton (AF_INET, key[i], &addr) > 0)
318 host = gethostbyaddr (addr, INADDRSZ, AF_INET);
319 else if ((host = gethostbyname2 (key[i], AF_INET6)) == NULL)
320 host = gethostbyname2 (key[i], AF_INET);
321
322 if (host == NULL)
323 result = 2;
324 else
325 print_hosts (host);
326 }
327
328 return result;
329}
330
331/* This is for hosts, but using getaddrinfo */
332static int
333ahosts_keys_int (int af, int xflags, int number, char *key[])
334{
335 int result = 0;
336 int i;
337 struct hostent *host;
338
339 if (number == 0)
340 {
341 sethostent (0);
342 while ((host = gethostent ()) != NULL)
343 print_hosts (host);
344 endhostent ();
345 return result;
346 }
347
348 struct addrinfo hint;
349 memset (&hint, '\0', sizeof (hint));
350 hint.ai_flags = (AI_V4MAPPED | AI_ADDRCONFIG | AI_CANONNAME
351 | idn_flags | xflags);
352 hint.ai_family = af;
353
354 for (i = 0; i < number; ++i)
355 {
356 struct addrinfo *res;
357
358 if (getaddrinfo (key[i], NULL, &hint, &res) != 0)
359 result = 2;
360 else
361 {
362 struct addrinfo *runp = res;
363
364 while (runp != NULL)
365 {
366 char sockbuf[20];
367 const char *sockstr;
368 if (runp->ai_socktype == SOCK_STREAM)
369 sockstr = "STREAM";
370 else if (runp->ai_socktype == SOCK_DGRAM)
371 sockstr = "DGRAM";
372 else if (runp->ai_socktype == SOCK_RAW)
373 sockstr = "RAW";
374#ifdef SOCK_SEQPACKET
375 else if (runp->ai_socktype == SOCK_SEQPACKET)
376 sockstr = "SEQPACKET";
377#endif
378#ifdef SOCK_RDM
379 else if (runp->ai_socktype == SOCK_RDM)
380 sockstr = "RDM";
381#endif
382#ifdef SOCK_DCCP
383 else if (runp->ai_socktype == SOCK_DCCP)
384 sockstr = "DCCP";
385#endif
386#ifdef SOCK_PACKET
387 else if (runp->ai_socktype == SOCK_PACKET)
388 sockstr = "PACKET";
389#endif
390 else
391 {
392 snprintf (sockbuf, sizeof (sockbuf), "%d",
393 runp->ai_socktype);
394 sockstr = sockbuf;
395 }
396
397 /* Three digits per byte, plus '%' and null terminator. */
398 char scope[3 * sizeof (uint32_t) + 2];
399 struct sockaddr_in6 *addr6
400 = (struct sockaddr_in6 *) runp->ai_addr;
401 if (runp->ai_family != AF_INET6 || addr6->sin6_scope_id == 0)
402 /* No scope ID present. */
403 scope[0] = '\0';
404 else
405 snprintf (scope, sizeof (scope), "%%%" PRIu32,
406 addr6->sin6_scope_id);
407
408 char buf[INET6_ADDRSTRLEN];
409 if (inet_ntop (runp->ai_family,
410 runp->ai_family == AF_INET
411 ? (void *) &((struct sockaddr_in *) runp->ai_addr)->sin_addr
412 : &addr6->sin6_addr,
413 buf, sizeof (buf)) == NULL)
414 {
415 strcpy (buf, "<invalid>");
416 scope[0] = '\0';
417 }
418
419 int pad = 15 - strlen (buf) - strlen (scope);
420 if (pad < 0)
421 pad = 0;
422
423 printf ("%s%-*s %-6s %s\n",
424 buf, pad, scope, sockstr, runp->ai_canonname ?: "");
425
426 runp = runp->ai_next;
427 }
428
429 freeaddrinfo (res);
430 }
431 }
432
433 return result;
434}
435
436static int
437ahosts_keys (int number, char *key[])
438{
439 return ahosts_keys_int (AF_UNSPEC, 0, number, key);
440}
441
442static int
443ahostsv4_keys (int number, char *key[])
444{
445 return ahosts_keys_int (AF_INET, 0, number, key);
446}
447
448static int
449ahostsv6_keys (int number, char *key[])
450{
451 return ahosts_keys_int (AF_INET6, AI_V4MAPPED, number, key);
452}
453
454/* This is for netgroup */
455static int
456netgroup_keys (int number, char *key[])
457{
458 int result = 0;
459
460 if (number == 0)
461 {
462 fprintf (stderr, _("Enumeration not supported on %s\n"), "netgroup");
463 return 3;
464 }
465
466 if (number == 4)
467 {
468 char *host = strcmp (key[1], "*") == 0 ? NULL : key[1];
469 char *user = strcmp (key[2], "*") == 0 ? NULL : key[2];
470 char *domain = strcmp (key[3], "*") == 0 ? NULL : key[3];
471
472 printf ("%-21s (%s,%s,%s) = %d\n",
473 key[0], host ?: "", user ?: "", domain ?: "",
474 innetgr (key[0], host, user, domain));
475 }
476 else if (number == 1)
477 {
478 if (!setnetgrent (key[0]))
479 result = 2;
480 else
481 {
482 char *p[3];
483
484 printf ("%-21s", key[0]);
485
486 while (getnetgrent (p, p + 1, p + 2))
487 printf (" (%s,%s,%s)", p[0] ?: " ", p[1] ?: "", p[2] ?: "");
488 putchar_unlocked ('\n');
489 }
490 }
491
492 endnetgrent ();
493
494 return result;
495}
496
497#define DYNARRAY_STRUCT gid_list
498#define DYNARRAY_ELEMENT gid_t
499#define DYNARRAY_PREFIX gid_list_
500#define DYNARRAY_INITIAL_SIZE 10
501#include <malloc/dynarray-skeleton.c>
502
503/* This is for initgroups */
504static int
505initgroups_keys (int number, char *key[])
506{
507 if (number == 0)
508 {
509 fprintf (stderr, _("Enumeration not supported on %s\n"), "initgroups");
510 return 3;
511 }
512
513 struct gid_list list;
514 gid_list_init (&list);
515 if (!gid_list_resize (&list, 10))
516 {
517 fprintf (stderr, _("Could not allocate group list: %m\n"));
518 return 3;
519 }
520
521 for (int i = 0; i < number; ++i)
522 {
523 int no = gid_list_size (&list);
524 int n;
525 while ((n = getgrouplist (key[i], -1, gid_list_begin (&list), &no)) == -1
526 && no > gid_list_size (&list))
527 {
528 if (!gid_list_resize (&list, no))
529 {
530 fprintf (stderr, _("Could not allocate group list: %m\n"));
531 return 3;
532 }
533 }
534
535 if (n == -1)
536 {
537 gid_list_free (&list);
538 return 1;
539 }
540
541 const gid_t *grps = gid_list_begin (&list);
542 printf ("%-21s", key[i]);
543 for (int j = 0; j < n; ++j)
544 if (grps[j] != -1)
545 printf (" %ld", (long int) grps[j]);
546 putchar_unlocked ('\n');
547 }
548
549 gid_list_free (&list);
550
551 return 0;
552}
553
554/* This is for networks */
555static void
556print_networks (struct netent *net)
557{
558 unsigned int i;
559 struct in_addr ip;
560 ip.s_addr = htonl (net->n_net);
561
562 printf ("%-21s %s", net->n_name, inet_ntoa (ip));
563
564 i = 0;
565 while (net->n_aliases[i] != NULL)
566 {
567 putchar_unlocked (' ');
568 fputs_unlocked (net->n_aliases[i], stdout);
569 ++i;
570 }
571 putchar_unlocked ('\n');
572}
573
574static int
575networks_keys (int number, char *key[])
576{
577 int result = 0;
578 int i;
579 struct netent *net;
580
581 if (number == 0)
582 {
583 setnetent (0);
584 while ((net = getnetent ()) != NULL)
585 print_networks (net);
586 endnetent ();
587 return result;
588 }
589
590 for (i = 0; i < number; ++i)
591 {
592 if (isdigit (key[i][0]))
593 net = getnetbyaddr (ntohl (inet_addr (key[i])), AF_UNSPEC);
594 else
595 net = getnetbyname (key[i]);
596
597 if (net == NULL)
598 result = 2;
599 else
600 print_networks (net);
601 }
602
603 return result;
604}
605
606/* Now is all for passwd */
607static void
608print_passwd (struct passwd *pwd)
609{
610 if (putpwent (pwd, stdout) != 0)
611 fprintf (stderr, "error writing passwd entry: %m\n");
612}
613
614static int
615passwd_keys (int number, char *key[])
616{
617 int result = 0;
618 int i;
619 struct passwd *pwd;
620
621 if (number == 0)
622 {
623 setpwent ();
624 while ((pwd = getpwent ()) != NULL)
625 print_passwd (pwd);
626 endpwent ();
627 return result;
628 }
629
630 for (i = 0; i < number; ++i)
631 {
632 errno = 0;
633 char *ep;
634 uid_t arg_uid = strtoul(key[i], &ep, 10);
635
636 if (errno != EINVAL && *key[i] != '\0' && *ep == '\0')
637 /* Valid numeric uid. */
638 pwd = getpwuid (arg_uid);
639 else
640 pwd = getpwnam (key[i]);
641
642 if (pwd == NULL)
643 result = 2;
644 else
645 print_passwd (pwd);
646 }
647
648 return result;
649}
650
651/* This is for protocols */
652static void
653print_protocols (struct protoent *proto)
654{
655 unsigned int i;
656
657 printf ("%-21s %d", proto->p_name, proto->p_proto);
658
659 i = 0;
660 while (proto->p_aliases[i] != NULL)
661 {
662 putchar_unlocked (' ');
663 fputs_unlocked (proto->p_aliases[i], stdout);
664 ++i;
665 }
666 putchar_unlocked ('\n');
667}
668
669static int
670protocols_keys (int number, char *key[])
671{
672 int result = 0;
673 int i;
674 struct protoent *proto;
675
676 if (number == 0)
677 {
678 setprotoent (0);
679 while ((proto = getprotoent ()) != NULL)
680 print_protocols (proto);
681 endprotoent ();
682 return result;
683 }
684
685 for (i = 0; i < number; ++i)
686 {
687 if (isdigit (key[i][0]))
688 proto = getprotobynumber (atol (key[i]));
689 else
690 proto = getprotobyname (key[i]);
691
692 if (proto == NULL)
693 result = 2;
694 else
695 print_protocols (proto);
696 }
697
698 return result;
699}
700
701#if HAVE_SUNRPC
702/* Now is all for rpc */
703static void
704print_rpc (struct rpcent *rpc)
705{
706 int i;
707
708 printf ("%-15s %d%s",
709 rpc->r_name, rpc->r_number, rpc->r_aliases[0] ? " " : "");
710
711 for (i = 0; rpc->r_aliases[i]; ++i)
712 printf (" %s", rpc->r_aliases[i]);
713 putchar_unlocked ('\n');
714}
715
716static int
717rpc_keys (int number, char *key[])
718{
719 int result = 0;
720 int i;
721 struct rpcent *rpc;
722
723 if (number == 0)
724 {
725 setrpcent (0);
726 while ((rpc = getrpcent ()) != NULL)
727 print_rpc (rpc);
728 endrpcent ();
729 return result;
730 }
731
732 for (i = 0; i < number; ++i)
733 {
734 if (isdigit (key[i][0]))
735 rpc = getrpcbynumber (atol (key[i]));
736 else
737 rpc = getrpcbyname (key[i]);
738
739 if (rpc == NULL)
740 result = 2;
741 else
742 print_rpc (rpc);
743 }
744
745 return result;
746}
747#endif
748
749/* for services */
750static void
751print_services (struct servent *serv)
752{
753 unsigned int i;
754
755 printf ("%-21s %d/%s", serv->s_name, ntohs (serv->s_port), serv->s_proto);
756
757 i = 0;
758 while (serv->s_aliases[i] != NULL)
759 {
760 putchar_unlocked (' ');
761 fputs_unlocked (serv->s_aliases[i], stdout);
762 ++i;
763 }
764 putchar_unlocked ('\n');
765}
766
767static int
768services_keys (int number, char *key[])
769{
770 int result = 0;
771 int i;
772 struct servent *serv;
773
774 if (!number)
775 {
776 setservent (0);
777 while ((serv = getservent ()) != NULL)
778 print_services (serv);
779 endservent ();
780 return result;
781 }
782
783 for (i = 0; i < number; ++i)
784 {
785 struct servent *serv;
786 char *proto = strchr (key[i], '/');
787
788 if (proto != NULL)
789 *proto++ = '\0';
790
791 char *endptr;
792 long port = strtol (key[i], &endptr, 10);
793
794 if (isdigit (key[i][0]) && *endptr == '\0'
795 && 0 <= port && port <= 65535)
796 serv = getservbyport (htons (port), proto);
797 else
798 serv = getservbyname (key[i], proto);
799
800 if (serv == NULL)
801 result = 2;
802 else
803 print_services (serv);
804 }
805
806 return result;
807}
808
809/* This is for shadow */
810static void
811print_shadow (struct spwd *sp)
812{
813 if (putspent (sp, stdout) != 0)
814 fprintf (stderr, "error writing shadow entry: %m\n");
815}
816
817static int
818shadow_keys (int number, char *key[])
819{
820 int result = 0;
821 int i;
822
823 if (number == 0)
824 {
825 struct spwd *sp;
826
827 setspent ();
828 while ((sp = getspent ()) != NULL)
829 print_shadow (sp);
830 endspent ();
831 return result;
832 }
833
834 for (i = 0; i < number; ++i)
835 {
836 struct spwd *sp;
837
838 sp = getspnam (key[i]);
839
840 if (sp == NULL)
841 result = 2;
842 else
843 print_shadow (sp);
844 }
845
846 return result;
847}
848
849struct
850 {
851 const char *name;
852 int (*func) (int number, char *key[]);
853 } databases[] =
854 {
855#define D(name) { #name, name ## _keys },
856D(ahosts)
857D(ahostsv4)
858D(ahostsv6)
859D(aliases)
860D(ethers)
861D(group)
862D(gshadow)
863D(hosts)
864D(initgroups)
865D(netgroup)
866D(networks)
867D(passwd)
868D(protocols)
869#if HAVE_SUNRPC
870D(rpc)
871#endif
872D(services)
873D(shadow)
874#undef D
875 { NULL, NULL }
876 };
877
878/* Handle arguments found by argp. */
879static error_t
880parse_option (int key, char *arg, struct argp_state *state)
881{
882 char *endp;
883 switch (key)
884 {
885 case 's':
886 endp = strchr (arg, ':');
887 if (endp == NULL)
888 /* No specific database, change them all. */
889 for (int i = 0; databases[i].name != NULL; ++i)
890 __nss_configure_lookup (databases[i].name, arg);
891 else
892 {
893 int i;
894 for (i = 0; databases[i].name != NULL; ++i)
895 if (strncmp (databases[i].name, arg, endp - arg) == 0)
896 {
897 __nss_configure_lookup (databases[i].name, endp + 1);
898 break;
899 }
900 if (databases[i].name == NULL)
901 error (EXIT_FAILURE, 0, gettext ("Unknown database name"));
902 }
903 break;
904
905 case 'i':
906 idn_flags = 0;
907 break;
908
909 default:
910 return ARGP_ERR_UNKNOWN;
911 }
912
913 return 0;
914}
915
916
917static char *
918more_help (int key, const char *text, void *input)
919{
920 switch (key)
921 {
922 size_t len;
923 char *doc;
924 FILE *fp;
925
926 case ARGP_KEY_HELP_EXTRA:
927 /* We print some extra information. */
928 fp = open_memstream (&doc, &len);
929 if (fp != NULL)
930 {
931 fputs_unlocked (_("Supported databases:\n"), fp);
932
933 for (int i = 0, col = 0; databases[i].name != NULL; ++i)
934 {
935 len = strlen (databases[i].name);
936 if (i != 0)
937 {
938 if (col + len > 72)
939 {
940 col = 0;
941 fputc_unlocked ('\n', fp);
942 }
943 else
944 fputc_unlocked (' ', fp);
945 }
946
947 fputs_unlocked (databases[i].name, fp);
948 col += len + 1;
949 }
950
951 fputs ("\n\n", fp);
952
953 fprintf (fp, gettext ("\
954For bug reporting instructions, please see:\n\
955%s.\n"), REPORT_BUGS_TO);
956
957 if (fclose (fp) == 0)
958 return doc;
959 }
960 break;
961
962 default:
963 break;
964 }
965 return (char *) text;
966}
967
968
969/* the main function */
970int
971main (int argc, char *argv[])
972{
973 /* Debugging support. */
974 mtrace ();
975
976 /* Set locale via LC_ALL. */
977 setlocale (LC_ALL, "");
978 /* Set the text message domain. */
979 textdomain (PACKAGE);
980
981 /* Parse and process arguments. */
982 int remaining;
983 argp_parse (&argp, argc, argv, 0, &remaining, NULL);
984
985 if ((argc - remaining) < 1)
986 {
987 error (0, 0, gettext ("wrong number of arguments"));
988 argp_help (&argp, stdout, ARGP_HELP_SEE, program_invocation_short_name);
989 return 1;
990 }
991
992 for (int i = 0; databases[i].name; ++i)
993 if (argv[remaining][0] == databases[i].name[0]
994 && !strcmp (argv[remaining], databases[i].name))
995 return databases[i].func (argc - remaining - 1, &argv[remaining + 1]);
996
997 fprintf (stderr, _("Unknown database: %s\n"), argv[remaining]);
998 argp_help (&argp, stdout, ARGP_HELP_SEE, program_invocation_short_name);
999 return 1;
1000}
1001