716 lines
14 KiB
C
716 lines
14 KiB
C
/* $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.
|
|
*
|
|
* 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 <stdarg.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <utmpx.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 netgroup(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 *[]);
|
|
static int utmpx(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, },
|
|
{ "netgroup", netgroup, },
|
|
{ "networks", networks, },
|
|
{ "passwd", passwd, },
|
|
{ "protocols", protocols, },
|
|
{ "rpc", rpc, },
|
|
{ "services", services, },
|
|
{ "shells", shells, },
|
|
{ "utmpx", utmpx, },
|
|
|
|
{ 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));
|
|
}
|
|
}
|
|
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");
|
|
va_end(ap);
|
|
}
|
|
|
|
/*
|
|
* 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 *he4, *he6;
|
|
char addr[IN6ADDRSZ];
|
|
int i, rv;
|
|
|
|
assert(argc > 1);
|
|
assert(argv != NULL);
|
|
|
|
sethostent(1);
|
|
he4 = he6 = NULL;
|
|
rv = RV_OK;
|
|
if (argc == 2) {
|
|
while ((he4 = gethostent()) != NULL)
|
|
hostsprint(he4);
|
|
} else {
|
|
for (i = 2; i < argc; i++) {
|
|
if (inet_pton(AF_INET6, argv[i], (void *)addr) > 0) {
|
|
he6 = gethostbyaddr(addr, IN6ADDRSZ, AF_INET6);
|
|
if (he6 != NULL)
|
|
hostsprint(he6);
|
|
} else if (inet_pton(AF_INET, argv[i],
|
|
(void *)addr) > 0) {
|
|
he4 = gethostbyaddr(addr, INADDRSZ, AF_INET);
|
|
if (he4 != NULL)
|
|
hostsprint(he4);
|
|
} else {
|
|
he6 = gethostbyname2(argv[i], AF_INET6);
|
|
if (he6 != NULL)
|
|
hostsprint(he6);
|
|
he4 = gethostbyname(argv[i]);
|
|
if (he4 != NULL)
|
|
hostsprint(he4);
|
|
}
|
|
if ( he4 == NULL && he6 == NULL ) {
|
|
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))
|
|
se = getservbyport(htons((u_short)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;
|
|
}
|
|
|
|
/*
|
|
* netgroup
|
|
*/
|
|
static int
|
|
netgroup(int argc, char *argv[])
|
|
{
|
|
char *host, *user, *domain;
|
|
int first;
|
|
int rv, i;
|
|
|
|
assert(argc > 1);
|
|
assert(argv != NULL);
|
|
|
|
#define NETGROUPPRINT(s) (((s) != NULL) ? (s) : "")
|
|
|
|
rv = RV_OK;
|
|
if (argc == 2) {
|
|
fprintf(stderr, "Enumeration not supported on netgroup\n");
|
|
rv = RV_NOENUM;
|
|
} else {
|
|
for (i = 2; i < argc; i++) {
|
|
setnetgrent(argv[i]);
|
|
first = 1;
|
|
while (getnetgrent(&host, &user, &domain) != 0) {
|
|
if (first) {
|
|
first = 0;
|
|
(void)fputs(argv[i], stdout);
|
|
}
|
|
(void)printf(" (%s,%s,%s)",
|
|
NETGROUPPRINT(host),
|
|
NETGROUPPRINT(user),
|
|
NETGROUPPRINT(domain));
|
|
}
|
|
if (!first)
|
|
(void)putchar('\n');
|
|
endnetgrent();
|
|
}
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*
|
|
* utmpx
|
|
*/
|
|
|
|
#define UTMPXPRINTID do { \
|
|
size_t i; \
|
|
for (i = 0; i < sizeof ut->ut_id; i++) \
|
|
printf("%02hhx", ut->ut_id[i]); \
|
|
} while (0)
|
|
|
|
static void
|
|
utmpxprint(const struct utmpx *ut)
|
|
{
|
|
|
|
if (ut->ut_type == EMPTY)
|
|
return;
|
|
|
|
printf("[%jd.%06u -- %.24s] ",
|
|
(intmax_t)ut->ut_tv.tv_sec, (unsigned int)ut->ut_tv.tv_usec,
|
|
ctime(&ut->ut_tv.tv_sec));
|
|
|
|
switch (ut->ut_type) {
|
|
case BOOT_TIME:
|
|
printf("system boot\n");
|
|
return;
|
|
case SHUTDOWN_TIME:
|
|
printf("system shutdown\n");
|
|
return;
|
|
case OLD_TIME:
|
|
printf("old system time\n");
|
|
return;
|
|
case NEW_TIME:
|
|
printf("new system time\n");
|
|
return;
|
|
case USER_PROCESS:
|
|
printf("user process: id=\"");
|
|
UTMPXPRINTID;
|
|
printf("\" pid=\"%d\" user=\"%s\" line=\"%s\" host=\"%s\"\n",
|
|
ut->ut_pid, ut->ut_user, ut->ut_line, ut->ut_host);
|
|
break;
|
|
case INIT_PROCESS:
|
|
printf("init process: id=\"");
|
|
UTMPXPRINTID;
|
|
printf("\" pid=\"%d\"\n", ut->ut_pid);
|
|
break;
|
|
case LOGIN_PROCESS:
|
|
printf("login process: id=\"");
|
|
UTMPXPRINTID;
|
|
printf("\" pid=\"%d\" user=\"%s\" line=\"%s\" host=\"%s\"\n",
|
|
ut->ut_pid, ut->ut_user, ut->ut_line, ut->ut_host);
|
|
break;
|
|
case DEAD_PROCESS:
|
|
printf("dead process: id=\"");
|
|
UTMPXPRINTID;
|
|
printf("\" pid=\"%d\"\n", ut->ut_pid);
|
|
break;
|
|
default:
|
|
printf("unknown record type %hu\n", ut->ut_type);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int
|
|
utmpx(int argc, char *argv[])
|
|
{
|
|
const struct utmpx *ut;
|
|
const char *file = NULL;
|
|
int rv = RV_OK, db = 0;
|
|
|
|
assert(argc > 1);
|
|
assert(argv != NULL);
|
|
|
|
if (argc == 3 || argc == 4) {
|
|
if (strcmp(argv[2], "active") == 0)
|
|
db = UTXDB_ACTIVE;
|
|
else if (strcmp(argv[2], "lastlogin") == 0)
|
|
db = UTXDB_LASTLOGIN;
|
|
else if (strcmp(argv[2], "log") == 0)
|
|
db = UTXDB_LOG;
|
|
else
|
|
rv = RV_USAGE;
|
|
if (argc == 4)
|
|
file = argv[3];
|
|
} else {
|
|
rv = RV_USAGE;
|
|
}
|
|
|
|
if (rv == RV_USAGE) {
|
|
fprintf(stderr,
|
|
"Usage: %s utmpx active | lastlogin | log [filename]\n",
|
|
getprogname());
|
|
} else if (rv == RV_OK) {
|
|
if (setutxdb(db, file) != 0)
|
|
return (RV_NOTFOUND);
|
|
while ((ut = getutxent()) != NULL)
|
|
utmpxprint(ut);
|
|
endutxent();
|
|
}
|
|
return (rv);
|
|
}
|