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o By popular demand import getent(1) utility: a program retrieves

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and displays entries from the administrative database specified by
database, using the lookup order specified in nsswitch.conf(5).

PR:		bin/79903, bin/88460, bin/96536
Submitted by:	Julien Gabel, Dan Nelson, Daniel J. O'Connor
Obtained from:	NetBSD
Discussed with:	ume, soc-bushman
MFC after:	1 month
This commit is contained in:
Maxim Konovalov 2006-05-04 08:44:44 +00:00
parent 5511c4d6dc
commit c912a3f7be
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=158287
4 changed files with 701 additions and 0 deletions
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1
usr.bin/Makefile
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@ -72,6 +72,7 @@ SUBDIR= alias \
gcore \
gencat \
getconf \
getent \
getopt \
${_gprof} \
head \

6
usr.bin/getent/Makefile Normal file
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@ -0,0 +1,6 @@
# $FreeBSD$
PROG= getent
WARNS= 3
.include <bsd.prog.mk>

129
usr.bin/getent/getent.1 Normal file
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@ -0,0 +1,129 @@
.\" $NetBSD: getent.1,v 1.13 2005/09/11 23:16:15 wiz Exp $
.\"
.\" Copyright (c) 2004 The NetBSD Foundation, Inc.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Luke Mewburn.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by the NetBSD
.\" Foundation, Inc. and its contributors.
.\" 4. Neither the name of The NetBSD Foundation nor the names of its
.\" contributors may be used to endorse or promote products derived
.\" from this software without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.\"
.\" $FreeBSD$
.\"
.Dd August 24, 2005
.Dt GETENT 1
.Os
.Sh NAME
.Nm getent
.Nd get entries from administrative database
.Sh SYNOPSIS
.Nm
.Ar database
.Op Ar key ...
.Sh DESCRIPTION
The
.Nm
program retrieves and displays entries from the administrative
database specified by
.Ar database ,
using the lookup order specified in
.Xr nsswitch.conf 5 .
The display format for a given
.Ar database
is as per the
.Dq traditional
file format for that database.
.Pp
.Ar database
may be one of:
.Bl -column "netgroup" -offset indent -compact
.Sy Database Ta Sy Display format
.It ethers Ta address name
.It group Ta group:passwd:gid:[member[,member]...]
.It hosts Ta address name [alias ...]
.It networks Ta name network [alias ...]
.It passwd Ta user:passwd:uid:gid:gecos:home_dir:shell
.It protocols Ta name protocol [alias ...]
.It rpc Ta name number [alias ...]
.It services Ta name port/protocol [alias ...]
.It shells Ta /path/to/shell
.El
.Pp
If one or more
.Ar key
arguments are provided, they will be looked up in
.Ar database
using the appropriate function.
For example,
.Sy passwd
supports a numeric UID or user name;
.Sy hosts
supports an IPv4 address, IPv6 address, or host name;
and
.Sy services
supports a service name, service name/protocol name, numeric port, or
numeric port/protocol name.
.Pp
If no
.Ar key
is provided and
.Ar database
supports enumeration, all entries for
.Ar database
will be retrieved using the appropriate enumeration function and printed.
.Sh DIAGNOSTICS
.Nm
exits 0 on success,
1 if there was an error in the command syntax,
2 if one of the specified key names was not found in
.Ar database ,
or 3 if there is no support for enumeration on
.Ar database .
.Sh SEE ALSO
.Xr ethers 5 ,
.Xr group 5 ,
.Xr hosts 5 ,
.Xr networks 5 ,
.Xr nsswitch.conf 5 ,
.Xr passwd 5 ,
.Xr protocols 5 ,
.Xr rpc 5 ,
.Xr services 5 ,
.Xr shells 5
.Sh HISTORY
A
.Nm
command appeared in
.Nx 3.0 ,
and was imported into
.Fx 7.0 .
It was based on the command of the same name in
.Tn Solaris
and
.Tn Linux .

565
usr.bin/getent/getent.c Normal file
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/* $NetBSD: getent.c,v 1.7 2005/08/24 14:31:02 ginsbach Exp $ */
/*-
* Copyright (c) 2004 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Luke Mewburn.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/socket.h>
#include <sys/param.h>
#include <arpa/inet.h>
#include <arpa/nameser.h>
#include <net/if.h>
#include <netinet/if_ether.h>
#include <netinet/in.h> /* for INET6_ADDRSTRLEN */
#include <rpc/rpcent.h>
#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <grp.h>
#include <limits.h>
#include <netdb.h>
#include <pwd.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
static int usage(void);
static int parsenum(const char *, unsigned long *);
static int ethers(int, char *[]);
static int group(int, char *[]);
static int hosts(int, char *[]);
static int networks(int, char *[]);
static int passwd(int, char *[]);
static int protocols(int, char *[]);
static int rpc(int, char *[]);
static int services(int, char *[]);
static int shells(int, char *[]);
enum {
RV_OK = 0,
RV_USAGE = 1,
RV_NOTFOUND = 2,
RV_NOENUM = 3,
};
static struct getentdb {
const char *name;
int (*callback)(int, char *[]);
} databases[] = {
{ "ethers", ethers, },
{ "group", group, },
{ "hosts", hosts, },
{ "networks", networks, },
{ "passwd", passwd, },
{ "protocols", protocols, },
{ "rpc", rpc, },
{ "services", services, },
{ "shells", shells, },
{ NULL, NULL, },
};
int
main(int argc, char *argv[])
{
struct getentdb *curdb;
setprogname(argv[0]);
if (argc < 2)
usage();
for (curdb = databases; curdb->name != NULL; curdb++) {
if (strcmp(curdb->name, argv[1]) == 0) {
exit(curdb->callback(argc, argv));
break;
}
}
fprintf(stderr, "Unknown database: %s\n", argv[1]);
usage();
/* NOTREACHED */
return RV_USAGE;
}
static int
usage(void)
{
struct getentdb *curdb;
fprintf(stderr, "Usage: %s database [key ...]\n",
getprogname());
fprintf(stderr, " database may be one of:\n\t");
for (curdb = databases; curdb->name != NULL; curdb++) {
fprintf(stderr, " %s", curdb->name);
}
fprintf(stderr, "\n");
exit(RV_USAGE);
/* NOTREACHED */
}
static int
parsenum(const char *word, unsigned long *result)
{
unsigned long num;
char *ep;
assert(word != NULL);
assert(result != NULL);
if (!isdigit((unsigned char)word[0]))
return 0;
errno = 0;
num = strtoul(word, &ep, 10);
if (num == ULONG_MAX && errno == ERANGE)
return 0;
if (*ep != '\0')
return 0;
*result = num;
return 1;
}
/*
* printfmtstrings --
* vprintf(format, ...),
* then the aliases (beginning with prefix, separated by sep),
* then a newline
*/
static void
printfmtstrings(char *strings[], const char *prefix, const char *sep,
const char *fmt, ...)
{
va_list ap;
const char *curpref;
int i;
va_start(ap, fmt);
vprintf(fmt, ap);
curpref = prefix;
for (i = 0; strings[i] != NULL; i++) {
printf("%s%s", curpref, strings[i]);
curpref = sep;
}
printf("\n");
}
/*
* ethers
*/
static int
ethers(int argc, char *argv[])
{
char hostname[MAXHOSTNAMELEN + 1], *hp;
struct ether_addr ea, *eap;
int i, rv;
assert(argc > 1);
assert(argv != NULL);
#define ETHERSPRINT printf("%-17s %s\n", ether_ntoa(eap), hp)
rv = RV_OK;
if (argc == 2) {
fprintf(stderr, "Enumeration not supported on ethers\n");
rv = RV_NOENUM;
} else {
for (i = 2; i < argc; i++) {
if ((eap = ether_aton(argv[i])) == NULL) {
eap = &ea;
hp = argv[i];
if (ether_hostton(hp, eap) != 0) {
rv = RV_NOTFOUND;
break;
}
} else {
hp = hostname;
if (ether_ntohost(hp, eap) != 0) {
rv = RV_NOTFOUND;
break;
}
}
ETHERSPRINT;
}
}
return rv;
}
/*
* group
*/
static int
group(int argc, char *argv[])
{
struct group *gr;
unsigned long id;
int i, rv;
assert(argc > 1);
assert(argv != NULL);
#define GROUPPRINT printfmtstrings(gr->gr_mem, ":", ",", "%s:%s:%u", \
gr->gr_name, gr->gr_passwd, gr->gr_gid)
setgroupent(1);
rv = RV_OK;
if (argc == 2) {
while ((gr = getgrent()) != NULL)
GROUPPRINT;
} else {
for (i = 2; i < argc; i++) {
if (parsenum(argv[i], &id))
gr = getgrgid((gid_t)id);
else
gr = getgrnam(argv[i]);
if (gr != NULL)
GROUPPRINT;
else {
rv = RV_NOTFOUND;
break;
}
}
}
endgrent();
return rv;
}
/*
* hosts
*/
static void
hostsprint(const struct hostent *he)
{
char buf[INET6_ADDRSTRLEN];
assert(he != NULL);
if (inet_ntop(he->h_addrtype, he->h_addr, buf, sizeof(buf)) == NULL)
strlcpy(buf, "# unknown", sizeof(buf));
printfmtstrings(he->h_aliases, " ", " ", "%-16s %s", buf, he->h_name);
}
static int
hosts(int argc, char *argv[])
{
struct hostent *he;
char addr[IN6ADDRSZ];
int i, rv;
assert(argc > 1);
assert(argv != NULL);
sethostent(1);
rv = RV_OK;
if (argc == 2) {
while ((he = gethostent()) != NULL)
hostsprint(he);
} else {
for (i = 2; i < argc; i++) {
if (inet_pton(AF_INET6, argv[i], (void *)addr) > 0)
he = gethostbyaddr(addr, IN6ADDRSZ, AF_INET6);
else if (inet_pton(AF_INET, argv[i], (void *)addr) > 0)
he = gethostbyaddr(addr, INADDRSZ, AF_INET);
else
he = gethostbyname(argv[i]);
if (he != NULL)
hostsprint(he);
else {
rv = RV_NOTFOUND;
break;
}
}
}
endhostent();
return rv;
}
/*
* networks
*/
static void
networksprint(const struct netent *ne)
{
char buf[INET6_ADDRSTRLEN];
struct in_addr ianet;
assert(ne != NULL);
ianet = inet_makeaddr(ne->n_net, 0);
if (inet_ntop(ne->n_addrtype, &ianet, buf, sizeof(buf)) == NULL)
strlcpy(buf, "# unknown", sizeof(buf));
printfmtstrings(ne->n_aliases, " ", " ", "%-16s %s", ne->n_name, buf);
}
static int
networks(int argc, char *argv[])
{
struct netent *ne;
in_addr_t net;
int i, rv;
assert(argc > 1);
assert(argv != NULL);
setnetent(1);
rv = RV_OK;
if (argc == 2) {
while ((ne = getnetent()) != NULL)
networksprint(ne);
} else {
for (i = 2; i < argc; i++) {
net = inet_network(argv[i]);
if (net != INADDR_NONE)
ne = getnetbyaddr(net, AF_INET);
else
ne = getnetbyname(argv[i]);
if (ne != NULL)
networksprint(ne);
else {
rv = RV_NOTFOUND;
break;
}
}
}
endnetent();
return rv;
}
/*
* passwd
*/
static int
passwd(int argc, char *argv[])
{
struct passwd *pw;
unsigned long id;
int i, rv;
assert(argc > 1);
assert(argv != NULL);
#define PASSWDPRINT printf("%s:%s:%u:%u:%s:%s:%s\n", \
pw->pw_name, pw->pw_passwd, pw->pw_uid, \
pw->pw_gid, pw->pw_gecos, pw->pw_dir, pw->pw_shell)
setpassent(1);
rv = RV_OK;
if (argc == 2) {
while ((pw = getpwent()) != NULL)
PASSWDPRINT;
} else {
for (i = 2; i < argc; i++) {
if (parsenum(argv[i], &id))
pw = getpwuid((uid_t)id);
else
pw = getpwnam(argv[i]);
if (pw != NULL)
PASSWDPRINT;
else {
rv = RV_NOTFOUND;
break;
}
}
}
endpwent();
return rv;
}
/*
* protocols
*/
static int
protocols(int argc, char *argv[])
{
struct protoent *pe;
unsigned long id;
int i, rv;
assert(argc > 1);
assert(argv != NULL);
#define PROTOCOLSPRINT printfmtstrings(pe->p_aliases, " ", " ", \
"%-16s %5d", pe->p_name, pe->p_proto)
setprotoent(1);
rv = RV_OK;
if (argc == 2) {
while ((pe = getprotoent()) != NULL)
PROTOCOLSPRINT;
} else {
for (i = 2; i < argc; i++) {
if (parsenum(argv[i], &id))
pe = getprotobynumber((int)id);
else
pe = getprotobyname(argv[i]);
if (pe != NULL)
PROTOCOLSPRINT;
else {
rv = RV_NOTFOUND;
break;
}
}
}
endprotoent();
return rv;
}
/*
* rpc
*/
static int
rpc(int argc, char *argv[])
{
struct rpcent *re;
unsigned long id;
int i, rv;
assert(argc > 1);
assert(argv != NULL);
#define RPCPRINT printfmtstrings(re->r_aliases, " ", " ", \
"%-16s %6d", \
re->r_name, re->r_number)
setrpcent(1);
rv = RV_OK;
if (argc == 2) {
while ((re = getrpcent()) != NULL)
RPCPRINT;
} else {
for (i = 2; i < argc; i++) {
if (parsenum(argv[i], &id))
re = getrpcbynumber((int)id);
else
re = getrpcbyname(argv[i]);
if (re != NULL)
RPCPRINT;
else {
rv = RV_NOTFOUND;
break;
}
}
}
endrpcent();
return rv;
}
/*
* services
*/
static int
services(int argc, char *argv[])
{
struct servent *se;
unsigned long id;
char *proto;
int i, rv;
assert(argc > 1);
assert(argv != NULL);
#define SERVICESPRINT printfmtstrings(se->s_aliases, " ", " ", \
"%-16s %5d/%s", \
se->s_name, ntohs(se->s_port), se->s_proto)
setservent(1);
rv = RV_OK;
if (argc == 2) {
while ((se = getservent()) != NULL)
SERVICESPRINT;
} else {
for (i = 2; i < argc; i++) {
proto = strchr(argv[i], '/');
if (proto != NULL)
*proto++ = '\0';
if (parsenum(argv[i], &id)) {
printf("%lu %s\n", id, proto);
se = getservbyport((int)id, proto);
} else
se = getservbyname(argv[i], proto);
if (se != NULL)
SERVICESPRINT;
else {
rv = RV_NOTFOUND;
break;
}
}
}
endservent();
return rv;
}
/*
* shells
*/
static int
shells(int argc, char *argv[])
{
const char *sh;
int i, rv;
assert(argc > 1);
assert(argv != NULL);
#define SHELLSPRINT printf("%s\n", sh)
setusershell();
rv = RV_OK;
if (argc == 2) {
while ((sh = getusershell()) != NULL)
SHELLSPRINT;
} else {
for (i = 2; i < argc; i++) {
setusershell();
while ((sh = getusershell()) != NULL) {
if (strcmp(sh, argv[i]) == 0) {
SHELLSPRINT;
break;
}
}
if (sh == NULL) {
rv = RV_NOTFOUND;
break;
}
}
}
endusershell();
return rv;
}