1 /* Copyright (c) 1998, 1999, 2000 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Thorsten Kukuk <kukuk@suse.de>, 1998.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
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 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 /* getent: get entries from administrative database
21 supported databases: passwd, group, hosts, services, protocols
35 #include <sys/socket.h>
36 #include <netinet/in.h>
37 #include <arpa/inet.h>
38 #include <arpa/nameser.h>
40 /* Get libc version number. */
43 #define PACKAGE _libc_intl_domainname
45 /* Name and version of program. */
46 static void print_version (FILE *stream, struct argp_state *state);
47 void (*argp_program_version_hook) (FILE *, struct argp_state *) = print_version;
49 /* Short description of parameters. */
50 static const char args_doc[] = N_("database [key ...]");
52 /* Short description of program. */
53 static const char doc[] =
54 N_("getent - get entries from administrative database.");
56 /* Data structure to communicate with argp functions. */
57 static struct argp argp = {
58 NULL, NULL, args_doc, doc,
61 /* Print the version information. */
63 print_version (FILE *stream, struct argp_state *state)
65 fprintf (stream, "getent (GNU %s) %s\n", PACKAGE, VERSION);
66 fprintf (stream, gettext ("\
67 Copyright (C) %s Free Software Foundation, Inc.\n\
68 This is free software; see the source for copying conditions. There is NO\n\
69 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
71 fprintf (stream, gettext ("Written by %s.\n"), "Thorsten Kukuk");
74 /* This is for group */
76 print_group (struct group *grp)
80 printf ("%s:%s:%ld:", grp->gr_name ? grp->gr_name : "",
81 grp->gr_passwd ? grp->gr_passwd : "",
82 (unsigned long)grp->gr_gid);
84 while (grp->gr_mem[i] != NULL)
86 fputs (grp->gr_mem[i], stdout);
88 if (grp->gr_mem[i] != NULL)
95 group_keys (int number, char *key[])
100 for (i = 0; i < number; ++i)
104 if (isdigit (key[i][0]))
105 grp = getgrgid (atol (key[i]));
107 grp = getgrnam (key[i]);
118 /* This is for networks */
120 print_networks (struct netent *net)
124 ip.s_addr = htonl (net->n_net);
126 fputs (net->n_name, stdout);
127 for (i = strlen (net->n_name); i < 22; ++i)
129 fputs (inet_ntoa (ip), stdout);
132 while (net->n_aliases[i] != NULL)
135 fputs (net->n_aliases[i], stdout);
137 if (net->n_aliases[i] != NULL)
140 fputs ("\n", stdout);
144 networks_keys (int number, char *key[])
149 for (i = 0; i < number; ++i)
153 if (isdigit (key[i][0]))
154 net = getnetbyaddr (inet_addr (key[i]), AF_UNIX);
156 net = getnetbyname (key[i]);
161 print_networks (net);
167 /* Now is all for passwd */
169 print_passwd (struct passwd *pwd)
171 printf ("%s:%s:%ld:%ld:%s:%s:%s\n",
172 pwd->pw_name ? pwd->pw_name : "",
173 pwd->pw_passwd ? pwd->pw_passwd : "",
174 (unsigned long)pwd->pw_uid,
175 (unsigned long)pwd->pw_gid,
176 pwd->pw_gecos ? pwd->pw_gecos : "",
177 pwd->pw_dir ? pwd->pw_dir : "",
178 pwd->pw_shell ? pwd->pw_shell : "");
182 passwd_keys (int number, char *key[])
187 for (i = 0; i < number; ++i)
191 if (isdigit (key[i][0]))
192 pwd = getpwuid (atol (key[i]));
194 pwd = getpwnam (key[i]);
205 /* This is for protocols */
207 print_protocols (struct protoent *proto)
211 fputs (proto->p_name, stdout);
212 for (i = strlen (proto->p_name); i < 22; ++i)
214 printf ("%d", proto->p_proto);
217 while (proto->p_aliases[i] != NULL)
220 fputs (proto->p_aliases[i], stdout);
223 fputs ("\n", stdout);
227 protocols_keys (int number, char *key[])
232 for (i = 0; i < number; ++i)
234 struct protoent *proto;
236 if (isdigit (key[i][0]))
237 proto = getprotobynumber (atol (key[i]));
239 proto = getprotobyname (key[i]);
244 print_protocols (proto);
250 /* This is for hosts */
252 print_hosts (struct hostent *host)
255 char buf[INET6_ADDRSTRLEN];
256 const char *ip = inet_ntop (host->h_addrtype, host->h_addr_list[0],
260 for (i = strlen (ip); i < 16; ++i)
262 fputs (host->h_name, stdout);
265 while (host->h_aliases[i] != NULL)
268 fputs (host->h_aliases[i], stdout);
271 fputs ("\n", stdout);
275 hosts_keys (int number, char *key[])
280 for (i = 0; i < number; ++i)
282 struct hostent *host = NULL;
284 if (strchr (key[i], ':') != NULL)
286 char addr[IN6ADDRSZ];
287 if (inet_pton (AF_INET6, key[i], &addr))
288 host = gethostbyaddr (addr, sizeof (addr), AF_INET6);
290 else if (isdigit (key[i][0]))
293 if (inet_pton (AF_INET, key[i], &addr))
294 host = gethostbyaddr (addr, sizeof (addr), AF_INET);
296 else if ((host = gethostbyname2 (key[i], AF_INET6)) == NULL)
297 host = gethostbyname2 (key[i], AF_INET);
310 print_services (struct servent *serv)
314 fputs (serv->s_name, stdout);
315 for (i = strlen (serv->s_name); i < 22; ++i)
317 printf ("%d/%s", ntohs (serv->s_port), serv->s_proto);
320 while (serv->s_aliases[i] != NULL)
323 fputs (serv->s_aliases[i], stdout);
326 fputs ("\n", stdout);
330 services_keys (int number, char *key[])
335 for (i = 0; i < number; ++i)
337 struct servent *serv;
338 char *proto = strchr (key[i], '/');
343 if (isdigit (key[i][0]))
345 int port = htons (atol (key[i]));
346 while ((serv = getservent ()) != NULL)
347 if (serv->s_port == port)
349 print_services (serv);
355 while ((serv = getservent ()) != NULL)
356 if (strcmp (serv->s_name, key[i]) == 0)
358 print_services (serv);
368 if (isdigit (key[i][0]))
369 serv = getservbyport (atol (key[i]), proto);
371 serv = getservbyname (key[i], proto);
376 print_services (serv);
383 /* the main function */
385 main (int argc, char *argv[])
389 /* Set locale via LC_ALL. */
390 setlocale (LC_ALL, "");
391 /* Set the text message domain. */
392 textdomain (PACKAGE);
394 /* Parse and process arguments. */
395 argp_parse (&argp, argc, argv, 0, &remaining, NULL);
397 if ((argc - remaining) < 1)
399 error (0, 0, gettext ("wrong number of arguments"));
400 argp_help (&argp, stdout, ARGP_HELP_SEE, program_invocation_short_name);
406 case 'g': /* group */
407 if (strcmp (argv[1], "group") == 0)
414 while ((grp = getgrent()) != NULL)
419 return group_keys (argc - 2, &argv[2]);
424 case 'h': /* hosts */
425 if (strcmp (argv[1], "hosts") == 0)
429 struct hostent *host;
432 while ((host = gethostent()) != NULL)
437 return hosts_keys (argc - 2, &argv[2]);
442 case 'n': /* networks */
443 if (strcmp (argv[1], "networks") == 0)
450 while ((net = getnetent()) != NULL)
451 print_networks (net);
455 return networks_keys (argc - 2, &argv[2]);
460 case 'p': /* passwd, protocols */
461 if (strcmp (argv[1], "passwd") == 0)
468 while ((pwd = getpwent()) != NULL)
473 return passwd_keys (argc - 2, &argv[2]);
475 else if (strcmp (argv[1], "protocols") == 0)
479 struct protoent *proto;
482 while ((proto = getprotoent()) != NULL)
483 print_protocols (proto);
487 return protocols_keys (argc - 2, &argv[2]);
492 case 's': /* services */
493 if (strcmp (argv[1], "services") == 0)
497 struct servent *serv;
500 while ((serv = getservent()) != NULL)
501 print_services (serv);
505 return services_keys (argc - 2, &argv[2]);
512 fprintf (stderr, _("Unknown database: %s\n"), argv[1]);
513 argp_help (&argp, stdout, ARGP_HELP_SEE, program_invocation_short_name);