1 /* Copyright (c) 1998-2008, 2009 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 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.
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.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 /* getent: get entries from administrative database. */
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>
43 /* Get libc version number. */
46 #define PACKAGE _libc_intl_domainname
48 /* Name and version of program. */
49 static void print_version (FILE *stream
, struct argp_state
*state
);
50 void (*argp_program_version_hook
) (FILE *, struct argp_state
*) = print_version
;
52 /* Short description of parameters. */
53 static const char args_doc
[] = N_("database [key ...]");
55 /* Supported options. */
56 static const struct argp_option args_options
[] =
58 { "service", 's', "CONFIG", 0, N_("Service configuration to be used") },
59 { NULL
, 0, NULL
, 0, NULL
},
62 /* Short description of program. */
63 static const char doc
[] = N_("Get entries from administrative database.");
65 /* Prototype for option handler. */
66 static error_t
parse_option (int key
, char *arg
, struct argp_state
*state
);
68 /* Function to print some extra text in the help message. */
69 static char *more_help (int key
, const char *text
, void *input
);
71 /* Data structure to communicate with argp functions. */
72 static struct argp argp
=
74 args_options
, parse_option
, args_doc
, doc
, NULL
, more_help
77 /* Print the version information. */
79 print_version (FILE *stream
, struct argp_state
*state
)
81 fprintf (stream
, "getent (GNU %s) %s\n", PACKAGE
, VERSION
);
82 fprintf (stream
, gettext ("\
83 Copyright (C) %s Free Software Foundation, Inc.\n\
84 This is free software; see the source for copying conditions. There is NO\n\
85 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
87 fprintf (stream
, gettext ("Written by %s.\n"), "Thorsten Kukuk");
90 /* This is for aliases */
92 print_aliases (struct aliasent
*alias
)
96 printf ("%s: ", alias
->alias_name
);
97 for (i
= strlen (alias
->alias_name
); i
< 14; ++i
)
98 fputs_unlocked (" ", stdout
);
100 for (i
= 0; i
< alias
->alias_members_len
; ++i
)
102 alias
->alias_members
[i
],
103 i
+ 1 == alias
->alias_members_len
? "\n" : ", ");
107 aliases_keys (int number
, char *key
[])
111 struct aliasent
*alias
;
116 while ((alias
= getaliasent ()) != NULL
)
117 print_aliases (alias
);
122 for (i
= 0; i
< number
; ++i
)
124 alias
= getaliasbyname (key
[i
]);
129 print_aliases (alias
);
135 /* This is for ethers */
137 ethers_keys (int number
, char *key
[])
144 fprintf (stderr
, _("Enumeration not supported on %s\n"), "ethers");
148 for (i
= 0; i
< number
; ++i
)
150 struct ether_addr
*ethp
, eth
;
151 char buffer
[1024], *p
;
153 ethp
= ether_aton (key
[i
]);
156 if (ether_ntohost (buffer
, ethp
))
165 if (ether_hostton (key
[i
], ð
))
173 printf ("%s %s\n", ether_ntoa (ethp
), p
);
179 /* This is for group */
181 print_group (struct group
*grp
)
185 printf ("%s:%s:%lu:", grp
->gr_name
? grp
->gr_name
: "",
186 grp
->gr_passwd
? grp
->gr_passwd
: "",
187 (unsigned long int) grp
->gr_gid
);
189 while (grp
->gr_mem
[i
] != NULL
)
191 fputs_unlocked (grp
->gr_mem
[i
], stdout
);
193 if (grp
->gr_mem
[i
] != NULL
)
194 putchar_unlocked (',');
196 putchar_unlocked ('\n');
200 group_keys (int number
, char *key
[])
209 while ((grp
= getgrent ()) != NULL
)
215 for (i
= 0; i
< number
; ++i
)
219 gid_t arg_gid
= strtoul(key
[i
], &ep
, 10);
221 if (errno
!= EINVAL
&& *key
[i
] != '\0' && *ep
== '\0')
222 /* Valid numeric gid. */
223 grp
= getgrgid (arg_gid
);
225 grp
= getgrnam (key
[i
]);
236 /* This is for gshadow */
238 print_gshadow (struct sgrp
*sg
)
243 sg
->sg_namp
? sg
->sg_namp
: "",
244 sg
->sg_passwd
? sg
->sg_passwd
: "");
246 while (sg
->sg_adm
[i
] != NULL
)
248 fputs_unlocked (sg
->sg_adm
[i
], stdout
);
250 if (sg
->sg_adm
[i
] != NULL
)
251 putchar_unlocked (',');
254 putchar_unlocked (':');
257 while (sg
->sg_mem
[i
] != NULL
)
259 fputs_unlocked (sg
->sg_mem
[i
], stdout
);
261 if (sg
->sg_mem
[i
] != NULL
)
262 putchar_unlocked (',');
265 putchar_unlocked ('\n');
269 gshadow_keys (int number
, char *key
[])
279 while ((sg
= getsgent ()) != NULL
)
285 for (i
= 0; i
< number
; ++i
)
289 sg
= getsgnam (key
[i
]);
300 /* This is for hosts */
302 print_hosts (struct hostent
*host
)
306 for (cnt
= 0; host
->h_addr_list
[cnt
] != NULL
; ++cnt
)
308 char buf
[INET6_ADDRSTRLEN
];
309 const char *ip
= inet_ntop (host
->h_addrtype
, host
->h_addr_list
[cnt
],
312 printf ("%-15s %s", ip
, host
->h_name
);
315 for (i
= 0; host
->h_aliases
[i
] != NULL
; ++i
)
317 putchar_unlocked (' ');
318 fputs_unlocked (host
->h_aliases
[i
], stdout
);
320 putchar_unlocked ('\n');
325 hosts_keys (int number
, char *key
[])
329 struct hostent
*host
;
334 while ((host
= gethostent ()) != NULL
)
340 for (i
= 0; i
< number
; ++i
)
342 struct hostent
*host
= NULL
;
343 char addr
[IN6ADDRSZ
];
345 if (inet_pton (AF_INET6
, key
[i
], &addr
) > 0)
346 host
= gethostbyaddr (addr
, IN6ADDRSZ
, AF_INET6
);
347 else if (inet_pton (AF_INET
, key
[i
], &addr
) > 0)
348 host
= gethostbyaddr (addr
, INADDRSZ
, AF_INET
);
349 else if ((host
= gethostbyname2 (key
[i
], AF_INET6
)) == NULL
)
350 host
= gethostbyname2 (key
[i
], AF_INET
);
361 /* This is for hosts, but using getaddrinfo */
363 ahosts_keys_int (int af
, int xflags
, int number
, char *key
[])
367 struct hostent
*host
;
372 while ((host
= gethostent ()) != NULL
)
378 struct addrinfo hint
;
379 memset (&hint
, '\0', sizeof (hint
));
380 hint
.ai_flags
= AI_V4MAPPED
| AI_ADDRCONFIG
| AI_CANONNAME
| xflags
;
383 for (i
= 0; i
< number
; ++i
)
385 struct addrinfo
*res
;
387 if (getaddrinfo (key
[i
], NULL
, &hint
, &res
) != 0)
391 struct addrinfo
*runp
= res
;
397 if (runp
->ai_socktype
== SOCK_STREAM
)
399 else if (runp
->ai_socktype
== SOCK_DGRAM
)
401 else if (runp
->ai_socktype
== SOCK_RAW
)
403 #ifdef SOCK_SEQPACKET
404 else if (runp
->ai_socktype
== SOCK_SEQPACKET
)
405 sockstr
= "SEQPACKET";
408 else if (runp
->ai_socktype
== SOCK_RDM
)
412 else if (runp
->ai_socktype
== SOCK_DCCP
)
416 else if (runp
->ai_socktype
== SOCK_PACKET
)
421 snprintf (sockbuf
, sizeof (sockbuf
), "%d",
426 char buf
[INET6_ADDRSTRLEN
];
427 printf ("%-15s %-6s %s\n",
428 inet_ntop (runp
->ai_family
,
429 runp
->ai_family
== AF_INET
430 ? (void *) &((struct sockaddr_in
*) runp
->ai_addr
)->sin_addr
431 : (void *) &((struct sockaddr_in6
*) runp
->ai_addr
)->sin6_addr
,
434 runp
->ai_canonname
?: "");
436 runp
= runp
->ai_next
;
447 ahosts_keys (int number
, char *key
[])
449 return ahosts_keys_int (AF_UNSPEC
, 0, number
, key
);
453 ahostsv4_keys (int number
, char *key
[])
455 return ahosts_keys_int (AF_INET
, 0, number
, key
);
459 ahostsv6_keys (int number
, char *key
[])
461 return ahosts_keys_int (AF_INET6
, AI_V4MAPPED
, number
, key
);
464 /* This is for netgroup */
466 netgroup_keys (int number
, char *key
[])
473 fprintf (stderr
, _("Enumeration not supported on %s\n"), "netgroup");
477 for (i
= 0; i
< number
; ++i
)
479 if (!setnetgrent (key
[i
]))
485 printf ("%-21s", key
[i
]);
487 while (getnetgrent (p
, p
+ 1, p
+ 2))
488 printf (" (%s, %s, %s)", p
[0] ?: " ", p
[1] ?: "", p
[2] ?: "");
489 putchar_unlocked ('\n');
498 /* This is for networks */
500 print_networks (struct netent
*net
)
504 ip
.s_addr
= htonl (net
->n_net
);
506 printf ("%-21s %s", net
->n_name
, inet_ntoa (ip
));
509 while (net
->n_aliases
[i
] != NULL
)
511 putchar_unlocked (' ');
512 fputs_unlocked (net
->n_aliases
[i
], stdout
);
515 putchar_unlocked ('\n');
519 networks_keys (int number
, char *key
[])
528 while ((net
= getnetent ()) != NULL
)
529 print_networks (net
);
534 for (i
= 0; i
< number
; ++i
)
536 if (isdigit (key
[i
][0]))
537 net
= getnetbyaddr (inet_addr (key
[i
]), AF_UNIX
);
539 net
= getnetbyname (key
[i
]);
544 print_networks (net
);
550 /* Now is all for passwd */
552 print_passwd (struct passwd
*pwd
)
554 printf ("%s:%s:%lu:%lu:%s:%s:%s\n",
555 pwd
->pw_name
? pwd
->pw_name
: "",
556 pwd
->pw_passwd
? pwd
->pw_passwd
: "",
557 (unsigned long int) pwd
->pw_uid
,
558 (unsigned long int) pwd
->pw_gid
,
559 pwd
->pw_gecos
? pwd
->pw_gecos
: "",
560 pwd
->pw_dir
? pwd
->pw_dir
: "",
561 pwd
->pw_shell
? pwd
->pw_shell
: "");
565 passwd_keys (int number
, char *key
[])
574 while ((pwd
= getpwent ()) != NULL
)
580 for (i
= 0; i
< number
; ++i
)
584 uid_t arg_uid
= strtoul(key
[i
], &ep
, 10);
586 if (errno
!= EINVAL
&& *key
[i
] != '\0' && *ep
== '\0')
587 /* Valid numeric uid. */
588 pwd
= getpwuid (arg_uid
);
590 pwd
= getpwnam (key
[i
]);
601 /* This is for protocols */
603 print_protocols (struct protoent
*proto
)
607 printf ("%-21s %d", proto
->p_name
, proto
->p_proto
);
610 while (proto
->p_aliases
[i
] != NULL
)
612 putchar_unlocked (' ');
613 fputs_unlocked (proto
->p_aliases
[i
], stdout
);
616 putchar_unlocked ('\n');
620 protocols_keys (int number
, char *key
[])
624 struct protoent
*proto
;
629 while ((proto
= getprotoent ()) != NULL
)
630 print_protocols (proto
);
635 for (i
= 0; i
< number
; ++i
)
637 if (isdigit (key
[i
][0]))
638 proto
= getprotobynumber (atol (key
[i
]));
640 proto
= getprotobyname (key
[i
]);
645 print_protocols (proto
);
651 /* Now is all for rpc */
653 print_rpc (struct rpcent
*rpc
)
657 printf ("%-15s %d%s",
658 rpc
->r_name
, rpc
->r_number
, rpc
->r_aliases
[0] ? " " : "");
660 for (i
= 0; rpc
->r_aliases
[i
]; ++i
)
661 printf (" %s", rpc
->r_aliases
[i
]);
662 putchar_unlocked ('\n');
666 rpc_keys (int number
, char *key
[])
675 while ((rpc
= getrpcent ()) != NULL
)
681 for (i
= 0; i
< number
; ++i
)
683 if (isdigit (key
[i
][0]))
684 rpc
= getrpcbynumber (atol (key
[i
]));
686 rpc
= getrpcbyname (key
[i
]);
699 print_services (struct servent
*serv
)
703 printf ("%-21s %d/%s", serv
->s_name
, ntohs (serv
->s_port
), serv
->s_proto
);
706 while (serv
->s_aliases
[i
] != NULL
)
708 putchar_unlocked (' ');
709 fputs_unlocked (serv
->s_aliases
[i
], stdout
);
712 putchar_unlocked ('\n');
716 services_keys (int number
, char *key
[])
720 struct servent
*serv
;
725 while ((serv
= getservent ()) != NULL
)
726 print_services (serv
);
731 for (i
= 0; i
< number
; ++i
)
733 struct servent
*serv
;
734 char *proto
= strchr (key
[i
], '/');
739 if (isdigit (key
[i
][0]))
740 serv
= getservbyport (htons (atol (key
[i
])), proto
);
742 serv
= getservbyname (key
[i
], proto
);
747 print_services (serv
);
753 /* This is for shadow */
755 print_shadow (struct spwd
*sp
)
758 sp
->sp_namp
? sp
->sp_namp
: "",
759 sp
->sp_pwdp
? sp
->sp_pwdp
: "");
761 #define SHADOW_FIELD(n) \
763 putchar_unlocked (':'); \
765 printf ("%ld:", sp->n)
767 SHADOW_FIELD (sp_lstchg
);
768 SHADOW_FIELD (sp_min
);
769 SHADOW_FIELD (sp_max
);
770 SHADOW_FIELD (sp_warn
);
771 SHADOW_FIELD (sp_inact
);
772 SHADOW_FIELD (sp_expire
);
773 if (sp
->sp_flag
== ~0ul)
774 putchar_unlocked ('\n');
776 printf ("%lu\n", sp
->sp_flag
);
780 shadow_keys (int number
, char *key
[])
790 while ((sp
= getspent ()) != NULL
)
796 for (i
= 0; i
< number
; ++i
)
800 sp
= getspnam (key
[i
]);
814 int (*func
) (int number
, char *key
[]);
817 #define D(name) { #name, name ## _keys },
837 /* Handle arguments found by argp. */
839 parse_option (int key
, char *arg
, struct argp_state
*state
)
845 endp
= strchr (arg
, ':');
847 /* No specific database, change them all. */
848 for (int i
= 0; databases
[i
].name
!= NULL
; ++i
)
849 __nss_configure_lookup (databases
[i
].name
, arg
);
853 for (i
= 0; databases
[i
].name
!= NULL
; ++i
)
854 if (strncmp (databases
[i
].name
, arg
, endp
- arg
) == 0)
856 __nss_configure_lookup (databases
[i
].name
, endp
+ 1);
859 if (databases
[i
].name
== NULL
)
860 error (EXIT_FAILURE
, 0, gettext ("Unknown database name"));
865 return ARGP_ERR_UNKNOWN
;
873 more_help (int key
, const char *text
, void *input
)
881 case ARGP_KEY_HELP_EXTRA
:
882 /* We print some extra information. */
883 fp
= open_memstream (&doc
, &len
);
886 fputs_unlocked (_("Supported databases:\n"), fp
);
888 for (int i
= 0, col
= 0; databases
[i
].name
!= NULL
; ++i
)
890 len
= strlen (databases
[i
].name
);
896 fputc_unlocked ('\n', fp
);
899 fputc_unlocked (' ', fp
);
902 fputs_unlocked (databases
[i
].name
, fp
);
908 fprintf (fp
, gettext ("\
909 For bug reporting instructions, please see:\n\
910 <http://www.gnu.org/software/libc/bugs.html>.\n"));
912 if (fclose (fp
) == 0)
920 return (char *) text
;
924 /* the main function */
926 main (int argc
, char *argv
[])
928 /* Debugging support. */
931 /* Set locale via LC_ALL. */
932 setlocale (LC_ALL
, "");
933 /* Set the text message domain. */
934 textdomain (PACKAGE
);
936 /* Parse and process arguments. */
938 argp_parse (&argp
, argc
, argv
, 0, &remaining
, NULL
);
940 if ((argc
- remaining
) < 1)
942 error (0, 0, gettext ("wrong number of arguments"));
943 argp_help (&argp
, stdout
, ARGP_HELP_SEE
, program_invocation_short_name
);
947 for (int i
= 0; databases
[i
].name
; ++i
)
948 if (argv
[remaining
][0] == databases
[i
].name
[0]
949 && !strcmp (argv
[remaining
], databases
[i
].name
))
950 return databases
[i
].func (argc
- remaining
- 1, &argv
[remaining
+ 1]);
952 fprintf (stderr
, _("Unknown database: %s\n"), argv
[remaining
]);
953 argp_help (&argp
, stdout
, ARGP_HELP_SEE
, program_invocation_short_name
);