719 lines
14 KiB
C
719 lines
14 KiB
C
/* $NetBSD: netgroup_mkdb.c,v 1.18 2009/10/21 01:07:47 snj Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1994 Christos Zoulas
|
|
* All rights reserved.
|
|
*
|
|
* 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 AUTHOR ``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 AUTHOR 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>
|
|
#ifndef lint
|
|
__RCSID("$NetBSD: netgroup_mkdb.c,v 1.18 2009/10/21 01:07:47 snj Exp $");
|
|
#endif
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/stat.h>
|
|
#include <stdlib.h>
|
|
#include <stddef.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <db.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stringlist.h>
|
|
#define _NETGROUP_PRIVATE
|
|
#include <netgroup.h>
|
|
#include <assert.h>
|
|
|
|
#include "str.h"
|
|
#include "util.h"
|
|
|
|
#define DEBUG_NG
|
|
|
|
#define NEW(a) (a *) emalloc(sizeof(a))
|
|
|
|
struct nentry {
|
|
int n_type;
|
|
size_t n_size; /* Buffer size required for printing */
|
|
union {
|
|
char *_name;
|
|
struct netgroup *_group;
|
|
} _n;
|
|
#define n_name _n._name
|
|
#define n_group _n._group
|
|
struct nentry *n_next;
|
|
};
|
|
|
|
|
|
static void cleanup(void);
|
|
static DB *ng_insert(DB *, const char *);
|
|
static void ng_reventry(DB *, DB *, struct nentry *, char *,
|
|
size_t, StringList *);
|
|
static void ng_print(struct nentry *, struct string *);
|
|
static void ng_rprint(DB *, struct string *);
|
|
static DB *ng_reverse(DB *, size_t);
|
|
static DB *ng_load(const char *);
|
|
static void ng_write(DB *, DB *, int);
|
|
static void ng_rwrite(DB *, DB *, int);
|
|
static void usage(void) __dead;
|
|
|
|
#ifdef DEBUG_NG
|
|
static int debug = 0;
|
|
static void ng_dump(DB *);
|
|
static void ng_rdump(DB *);
|
|
#endif /* DEBUG_NG */
|
|
static int dups = 0;
|
|
|
|
|
|
static const char ng_empty[] = "";
|
|
#define NG_EMPTY(a) ((a) ? (a) : ng_empty)
|
|
|
|
static const char *dbname = _PATH_NETGROUP_DB;
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
DB *db, *ndb, *hdb, *udb;
|
|
int ch;
|
|
char buf[MAXPATHLEN];
|
|
const char *fname = _PATH_NETGROUP;
|
|
|
|
|
|
while ((ch = getopt(argc, argv, "dDo:")) != -1)
|
|
switch (ch) {
|
|
#ifdef DEBUG_NG
|
|
case 'd':
|
|
debug++;
|
|
break;
|
|
#endif
|
|
case 'o':
|
|
dbname = optarg;
|
|
break;
|
|
|
|
case 'D':
|
|
dups++;
|
|
break;
|
|
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc == 1)
|
|
fname = *argv;
|
|
else if (argc > 1)
|
|
usage();
|
|
|
|
if (atexit(cleanup))
|
|
err(1, "Cannot install exit handler");
|
|
|
|
/* Read and parse the netgroup file */
|
|
ndb = ng_load(fname);
|
|
#ifdef DEBUG_NG
|
|
if (debug) {
|
|
(void)fprintf(stderr, "#### Database\n");
|
|
ng_dump(ndb);
|
|
}
|
|
#endif
|
|
|
|
/* Reverse the database by host */
|
|
hdb = ng_reverse(ndb, offsetof(struct netgroup, ng_host));
|
|
#ifdef DEBUG_NG
|
|
if (debug) {
|
|
(void)fprintf(stderr, "#### Reverse by host\n");
|
|
ng_rdump(hdb);
|
|
}
|
|
#endif
|
|
|
|
/* Reverse the database by user */
|
|
udb = ng_reverse(ndb, offsetof(struct netgroup, ng_user));
|
|
#ifdef DEBUG_NG
|
|
if (debug) {
|
|
(void)fprintf(stderr, "#### Reverse by user\n");
|
|
ng_rdump(udb);
|
|
}
|
|
#endif
|
|
|
|
(void)snprintf(buf, sizeof(buf), "%s.tmp", dbname);
|
|
|
|
db = dbopen(buf, O_RDWR | O_CREAT | O_EXCL,
|
|
(S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH), DB_HASH, NULL);
|
|
if (!db)
|
|
err(1, "%s", buf);
|
|
|
|
ng_write(db, ndb, _NG_KEYBYNAME);
|
|
ng_rwrite(db, udb, _NG_KEYBYUSER);
|
|
ng_rwrite(db, hdb, _NG_KEYBYHOST);
|
|
|
|
if ((db->close)(db))
|
|
err(1, "Error closing database");
|
|
|
|
if (rename(buf, dbname) == -1)
|
|
err(1, "Cannot rename `%s' to `%s'", buf, dbname);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* cleanup(): Remove temporary files upon exit
|
|
*/
|
|
static void
|
|
cleanup(void)
|
|
{
|
|
char buf[MAXPATHLEN];
|
|
(void)snprintf(buf, sizeof(buf), "%s.tmp", dbname);
|
|
(void)unlink(buf);
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* ng_load(): Load the netgroup database from a file
|
|
*/
|
|
static DB *
|
|
ng_load(const char *fname)
|
|
{
|
|
FILE *fp;
|
|
DB *db;
|
|
char *buf;
|
|
size_t size;
|
|
struct nentry *tail, *head, *e;
|
|
char *p, *name;
|
|
struct netgroup *ng;
|
|
DBT data, key;
|
|
|
|
/* Open the netgroup file */
|
|
if ((fp = fopen(fname, "r")) == NULL)
|
|
err(1, "%s", fname);
|
|
|
|
db = dbopen(NULL, O_RDWR | O_CREAT | O_EXCL, 0, DB_HASH, NULL);
|
|
|
|
if (db == NULL)
|
|
err(1, "dbopen");
|
|
|
|
while ((buf = fparseln(fp, &size, NULL, NULL, 0)) != NULL) {
|
|
tail = head = NULL;
|
|
p = buf;
|
|
|
|
while (p != NULL) {
|
|
switch (_ng_parse(&p, &name, &ng)) {
|
|
case _NG_NONE:
|
|
/* done with this one */
|
|
p = NULL;
|
|
free(buf);
|
|
if (head == NULL)
|
|
break;
|
|
|
|
key.data = (u_char *)head->n_name;
|
|
key.size = strlen(head->n_name) + 1;
|
|
data.data = (u_char *)&head;
|
|
data.size = sizeof(head);
|
|
switch ((db->put)(db, &key, &data,
|
|
R_NOOVERWRITE)) {
|
|
case 0:
|
|
break;
|
|
|
|
case 1:
|
|
warnx("Duplicate entry netgroup `%s'",
|
|
head->n_name);
|
|
break;
|
|
|
|
case -1:
|
|
err(1, "put");
|
|
break;
|
|
|
|
default:
|
|
abort();
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case _NG_NAME:
|
|
e = NEW(struct nentry);
|
|
e->n_type = _NG_NAME;
|
|
e->n_name = name;
|
|
e->n_next = NULL;
|
|
e->n_size = size;
|
|
if (tail == NULL)
|
|
head = tail = e;
|
|
else {
|
|
tail->n_next = e;
|
|
tail = e;
|
|
}
|
|
break;
|
|
|
|
case _NG_GROUP:
|
|
if (tail == NULL) {
|
|
char fmt[BUFSIZ];
|
|
_ng_print(fmt, sizeof(fmt), ng);
|
|
errx(1, "no netgroup key for %s", fmt);
|
|
}
|
|
else {
|
|
e = NEW(struct nentry);
|
|
e->n_type = _NG_GROUP;
|
|
e->n_group = ng;
|
|
e->n_next = NULL;
|
|
e->n_size = size;
|
|
tail->n_next = e;
|
|
tail = e;
|
|
}
|
|
break;
|
|
|
|
case _NG_ERROR:
|
|
errx(1, "Fatal error at `%s'", p);
|
|
break;
|
|
|
|
default:
|
|
abort();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
(void)fclose(fp);
|
|
return db;
|
|
}
|
|
|
|
|
|
/*
|
|
* ng_insert(): Insert named key into the database, and return its associated
|
|
* string database
|
|
*/
|
|
static DB *
|
|
ng_insert(DB *db, const char *name)
|
|
{
|
|
DB *xdb = NULL;
|
|
DBT key, data;
|
|
|
|
key.data = __UNCONST(name);
|
|
key.size = strlen(name) + 1;
|
|
|
|
switch ((db->get)(db, &key, &data, 0)) {
|
|
case 0:
|
|
(void)memcpy(&xdb, data.data, sizeof(xdb));
|
|
break;
|
|
|
|
case 1:
|
|
xdb = dbopen(NULL, O_RDWR | O_CREAT | O_EXCL, 0, DB_HASH, NULL);
|
|
if (xdb == NULL)
|
|
err(1, "dbopen");
|
|
|
|
data.data = (u_char *)&xdb;
|
|
data.size = sizeof(xdb);
|
|
switch ((db->put)(db, &key, &data, R_NOOVERWRITE)) {
|
|
case 0:
|
|
break;
|
|
|
|
case -1:
|
|
err(1, "db put `%s'", name);
|
|
break;
|
|
|
|
case 1:
|
|
default:
|
|
abort();
|
|
}
|
|
break;
|
|
|
|
case -1:
|
|
err(1, "db get `%s'", name);
|
|
break;
|
|
|
|
default:
|
|
abort();
|
|
break;
|
|
}
|
|
|
|
return xdb;
|
|
}
|
|
|
|
|
|
/*
|
|
* ng_reventry(): Recursively add all the netgroups to the group entry.
|
|
*/
|
|
static void
|
|
ng_reventry(DB *db, DB *udb, struct nentry *fe, char *name, size_t s,
|
|
StringList *ss)
|
|
{
|
|
DBT key, data;
|
|
struct nentry *e;
|
|
struct netgroup *ng;
|
|
char *p;
|
|
DB *xdb;
|
|
|
|
if (sl_find(ss, fe->n_name) != NULL) {
|
|
_ng_cycle(name, ss);
|
|
return;
|
|
}
|
|
sl_add(ss, fe->n_name);
|
|
|
|
for (e = fe->n_next; e != NULL; e = e->n_next)
|
|
switch (e->n_type) {
|
|
case _NG_GROUP:
|
|
if (!dups)
|
|
sl_delete(ss, fe->n_name, 0);
|
|
ng = e->n_group;
|
|
p = _ng_makekey(*((char **)(((char *) ng) + s)),
|
|
ng->ng_domain, e->n_size);
|
|
xdb = ng_insert(udb, p);
|
|
key.data = (u_char *)name;
|
|
key.size = strlen(name) + 1;
|
|
data.data = NULL;
|
|
data.size = 0;
|
|
switch ((xdb->put)(xdb, &key, &data, R_NOOVERWRITE)) {
|
|
case 0:
|
|
case 1:
|
|
break;
|
|
|
|
case -1:
|
|
err(1, "db put `%s'", name);
|
|
return;
|
|
|
|
default:
|
|
abort();
|
|
break;
|
|
}
|
|
free(p);
|
|
break;
|
|
|
|
case _NG_NAME:
|
|
key.data = (u_char *) e->n_name;
|
|
key.size = strlen(e->n_name) + 1;
|
|
switch ((db->get)(db, &key, &data, 0)) {
|
|
struct nentry *rfe;
|
|
case 0:
|
|
(void)memcpy(&rfe, data.data, sizeof(rfe));
|
|
ng_reventry(db, udb, rfe, name, s, ss);
|
|
break;
|
|
|
|
case 1:
|
|
break;
|
|
|
|
case -1:
|
|
err(1, "db get `%s'", e->n_name);
|
|
return;
|
|
|
|
default:
|
|
abort();
|
|
return;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
abort();
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* ng_reverse(): Reverse the database
|
|
*/
|
|
static DB *
|
|
ng_reverse(DB *db, size_t s)
|
|
{
|
|
int pos;
|
|
StringList *sl;
|
|
DBT key, data;
|
|
struct nentry *fe;
|
|
DB *udb = dbopen(NULL, O_RDWR | O_CREAT | O_EXCL, 0,
|
|
DB_HASH, NULL);
|
|
|
|
if (udb == NULL)
|
|
err(1, "dbopen");
|
|
|
|
for (pos = R_FIRST;; pos = R_NEXT)
|
|
switch ((db->seq)(db, &key, &data, pos)) {
|
|
case 0:
|
|
sl = sl_init();
|
|
(void)memcpy(&fe, data.data, sizeof(fe));
|
|
ng_reventry(db, udb, fe, (char *) key.data, s, sl);
|
|
sl_free(sl, 0);
|
|
break;
|
|
|
|
case 1:
|
|
return udb;
|
|
|
|
case -1:
|
|
err(1, "seq");
|
|
return udb;
|
|
}
|
|
|
|
return udb;
|
|
}
|
|
|
|
|
|
/*
|
|
* ng_print(): Pretty print a netgroup entry
|
|
*/
|
|
static void
|
|
ng_print(struct nentry *e, struct string *str)
|
|
{
|
|
char *ptr;
|
|
|
|
if (e->n_next == NULL) {
|
|
str_append(str, "", ' ');
|
|
return;
|
|
}
|
|
|
|
ptr = emalloc(e->n_size);
|
|
|
|
for (e = e->n_next; e != NULL; e = e->n_next) {
|
|
switch (e->n_type) {
|
|
case _NG_NAME:
|
|
(void)snprintf(ptr, e->n_size, "%s", e->n_name);
|
|
break;
|
|
|
|
case _NG_GROUP:
|
|
(void)snprintf(ptr, e->n_size, "(%s,%s,%s)",
|
|
NG_EMPTY(e->n_group->ng_host),
|
|
NG_EMPTY(e->n_group->ng_user),
|
|
NG_EMPTY(e->n_group->ng_domain));
|
|
break;
|
|
|
|
default:
|
|
errx(1, "Internal error: Bad netgroup type");
|
|
break;
|
|
}
|
|
str_append(str, ptr, ' ');
|
|
}
|
|
free(ptr);
|
|
}
|
|
|
|
|
|
/*
|
|
* ng_rprint(): Pretty print all reverse netgroup mappings in the given entry
|
|
*/
|
|
static void
|
|
ng_rprint(DB *db, struct string *str)
|
|
{
|
|
int pos;
|
|
DBT key, data;
|
|
|
|
for (pos = R_FIRST;; pos = R_NEXT)
|
|
switch ((db->seq)(db, &key, &data, pos)) {
|
|
case 0:
|
|
str_append(str, (char *)key.data, ',');
|
|
break;
|
|
|
|
case 1:
|
|
return;
|
|
|
|
default:
|
|
err(1, "seq");
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
#ifdef DEBUG_NG
|
|
/*
|
|
* ng_dump(): Pretty print all netgroups in the given database
|
|
*/
|
|
static void
|
|
ng_dump(DB *db)
|
|
{
|
|
int pos;
|
|
DBT key, data;
|
|
struct nentry *e;
|
|
struct string buf;
|
|
|
|
for (pos = R_FIRST;; pos = R_NEXT)
|
|
switch ((db->seq)(db, &key, &data, pos)) {
|
|
case 0:
|
|
(void)memcpy(&e, data.data, sizeof(e));
|
|
str_init(&buf);
|
|
assert(e->n_type == _NG_NAME);
|
|
|
|
ng_print(e, &buf);
|
|
(void)fprintf(stderr, "%s\t%s\n", e->n_name,
|
|
buf.s_str ? buf.s_str : "");
|
|
str_free(&buf);
|
|
break;
|
|
|
|
case 1:
|
|
return;
|
|
|
|
default:
|
|
err(1, "seq");
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* ng_rdump(): Pretty print all reverse mappings in the given database
|
|
*/
|
|
static void
|
|
ng_rdump(DB *db)
|
|
{
|
|
int pos;
|
|
DBT key, data;
|
|
DB *xdb;
|
|
struct string buf;
|
|
|
|
for (pos = R_FIRST;; pos = R_NEXT)
|
|
switch ((db->seq)(db, &key, &data, pos)) {
|
|
case 0:
|
|
(void)memcpy(&xdb, data.data, sizeof(xdb));
|
|
str_init(&buf);
|
|
ng_rprint(xdb, &buf);
|
|
(void)fprintf(stderr, "%s\t%s\n",
|
|
(char *)key.data, buf.s_str ? buf.s_str : "");
|
|
str_free(&buf);
|
|
break;
|
|
|
|
case 1:
|
|
return;
|
|
|
|
default:
|
|
err(1, "seq");
|
|
return;
|
|
}
|
|
}
|
|
#endif /* DEBUG_NG */
|
|
|
|
|
|
/*
|
|
* ng_write(): Dump the database into a file.
|
|
*/
|
|
static void
|
|
ng_write(DB *odb, DB *idb, int k)
|
|
{
|
|
int pos;
|
|
DBT key, data;
|
|
struct nentry *e;
|
|
struct string skey, sdata;
|
|
|
|
for (pos = R_FIRST;; pos = R_NEXT)
|
|
switch ((idb->seq)(idb, &key, &data, pos)) {
|
|
case 0:
|
|
memcpy(&e, data.data, sizeof(e));
|
|
str_init(&skey);
|
|
str_init(&sdata);
|
|
assert(e->n_type == _NG_NAME);
|
|
|
|
str_prepend(&skey, e->n_name, k);
|
|
ng_print(e, &sdata);
|
|
key.data = (u_char *) skey.s_str;
|
|
key.size = skey.s_len + 1;
|
|
data.data = (u_char *) sdata.s_str;
|
|
data.size = sdata.s_len + 1;
|
|
|
|
switch ((odb->put)(odb, &key, &data, R_NOOVERWRITE)) {
|
|
case 0:
|
|
break;
|
|
|
|
case -1:
|
|
err(1, "put");
|
|
break;
|
|
|
|
case 1:
|
|
default:
|
|
abort();
|
|
break;
|
|
}
|
|
|
|
str_free(&skey);
|
|
str_free(&sdata);
|
|
break;
|
|
|
|
case 1:
|
|
return;
|
|
|
|
default:
|
|
err(1, "seq");
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* ng_rwrite(): Write the database
|
|
*/
|
|
static void
|
|
ng_rwrite(DB *odb, DB *idb, int k)
|
|
{
|
|
int pos;
|
|
DBT key, data;
|
|
DB *xdb;
|
|
struct string skey, sdata;
|
|
|
|
for (pos = R_FIRST;; pos = R_NEXT)
|
|
switch ((idb->seq)(idb, &key, &data, pos)) {
|
|
case 0:
|
|
memcpy(&xdb, data.data, sizeof(xdb));
|
|
str_init(&skey);
|
|
str_init(&sdata);
|
|
|
|
str_prepend(&skey, (char *) key.data, k);
|
|
ng_rprint(xdb, &sdata);
|
|
key.data = (u_char *) skey.s_str;
|
|
key.size = skey.s_len + 1;
|
|
data.data = (u_char *) sdata.s_str;
|
|
data.size = sdata.s_len + 1;
|
|
|
|
switch ((odb->put)(odb, &key, &data, R_NOOVERWRITE)) {
|
|
case 0:
|
|
break;
|
|
|
|
case -1:
|
|
err(1, "put");
|
|
break;
|
|
|
|
case 1:
|
|
default:
|
|
abort();
|
|
break;
|
|
}
|
|
|
|
str_free(&skey);
|
|
str_free(&sdata);
|
|
break;
|
|
|
|
case 1:
|
|
return;
|
|
|
|
default:
|
|
err(1, "seq");
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* usage(): Print usage message and exit
|
|
*/
|
|
static void
|
|
usage(void)
|
|
{
|
|
|
|
(void)fprintf(stderr, "Usage: %s [-D] [-o db] [<file>]\n",
|
|
getprogname());
|
|
exit(1);
|
|
}
|