Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/netgroup_mkdb/netgroup_mkdb.c	Lines:	0	242	0.0 %
Date:	2017-11-07	Branches:	0	117	0.0 %


/*	$OpenBSD: netgroup_mkdb.c,v 1.20 2015/10/13 15:12:53 deraadt 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Christos Zoulas.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * 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/types.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 <netgroup.h>
#include <assert.h>

#include "str.h"
#include "stringlist.h"
#include "util.h"

#define DEBUG_NG

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 DB       *ng_insert(DB *, const char *);
static void	 ng_reventry(DB *, DB *, struct nentry *, char *,
		    size_t, struct 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);
static void	 cleanup(void);

#ifdef DEBUG_NG
static int 	 debug = 0;
static void	 ng_dump(DB *);
static void	 ng_rdump(DB *);
#endif /* DEBUG_NG */


static const char ng_empty[] = "";
#define NG_EMPTY(a)	((a) ? (a) : ng_empty)

static char    *dbname = _PATH_NETGROUP_DB;

int
main(int argc, char *argv[])
{
	char		  buf[PATH_MAX], *fname = _PATH_NETGROUP;
	DB		 *db, *ndb, *hdb, *udb;
	int               ch;

	if (pledge("stdio rpath wpath cpath flock", NULL) == -1)
		err(1, "pledge");

	while ((ch = getopt(argc, argv, "do:")) != -1)
		switch (ch) {
#ifdef DEBUG_NG
		case 'd':
			debug++;
			break;
#endif
		case 'o':
			dbname = optarg;
			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[PATH_MAX];

	(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, *p, *name;
	size_t          size;
	struct nentry  *tail, *head, *e;
	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 = get_line(fp, &size)) != 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 = emalloc(sizeof(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 = emalloc(sizeof(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;

			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 = (u_char *) name;
	key.size = strlen(name) + 1;

	switch ((db->get)(db, &key, &data, 0)) {
	case 0:
		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,
    struct stringlist *ss)
{
	DBT             key, data;
	struct nentry  *e;
	struct netgroup *ng;
	struct nentry *rfe;
	char           *p;
	DB             *xdb;

	if (_ng_sl_find(ss, fe->n_name) != NULL) {
		warnx("Cycle in netgroup `%s'", name);
		return;
	}
	if (_ng_sl_add(ss, fe->n_name) == -1) {
		warn(NULL);
		return;
	}

	for (e = fe->n_next; e != NULL; e = e->n_next)
		switch (e->n_type) {
		case _NG_GROUP:
			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)) {
			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;
	struct stringlist *sl;
	DBT             key, data;
	struct nentry  *fe;
	DB             *udb;

	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 = _ng_sl_init();
			memcpy(&fe, data.data, sizeof(fe));
			ng_reventry(db, udb, fe, (char *) key.data, s, sl);
			_ng_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 = emalloc(e->n_size);

	if (e->n_next == NULL) {
		str_append(str, "", ' ');
		return;
	}

	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:
			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:
			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)
{
	extern const char *__progname;

	fprintf(stderr, "usage: %s [-o database] file\n", __progname);
	exit(1);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: netgroup_mkdb.c,v 1.20 2015/10/13 15:12:53 deraadt Exp $ */
2
3			/*
4			* Copyright (c) 1994 Christos Zoulas
5			* All rights reserved.
6			*
7			* Redistribution and use in source and binary forms, with or without
8			* modification, are permitted provided that the following conditions
9			* are met:
10			* 1. Redistributions of source code must retain the above copyright
11			* notice, this list of conditions and the following disclaimer.
12			* 2. Redistributions in binary form must reproduce the above copyright
13			* notice, this list of conditions and the following disclaimer in the
14			* documentation and/or other materials provided with the distribution.
15			* 3. All advertising materials mentioning features or use of this software
16			* must display the following acknowledgement:
17			* This product includes software developed by Christos Zoulas.
18			* 4. The name of the author may not be used to endorse or promote products
19			* derived from this software without specific prior written permission.
20			*
21			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
22			* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23			* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24			* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
25			* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31			* SUCH DAMAGE.
32			*/
33
34			#include <sys/types.h>
35			#include <sys/stat.h>
36			#include <stdlib.h>
37			#include <stddef.h>
38			#include <unistd.h>
39			#include <fcntl.h>
40			#include <db.h>
41			#include <err.h>
42			#include <errno.h>
43			#include <stdio.h>
44			#include <string.h>
45			#include <netgroup.h>
46			#include <assert.h>
47
48			#include "str.h"
49			#include "stringlist.h"
50			#include "util.h"
51
52			#define DEBUG_NG
53
54			struct nentry {
55			int n_type;
56			size_t n_size; /* Buffer size required for printing */
57			union {
58			char *_name;
59			struct netgroup *_group;
60			} _n;
61			#define n_name _n._name
62			#define n_group _n._group
63			struct nentry *n_next;
64			};
65
66
67			static DB ng_insert(DB , const char *);
68			static void ng_reventry(DB , DB , struct nentry , char ,
69			size_t, struct stringlist *);
70
71			static void ng_print(struct nentry , struct string );
72			static void ng_rprint(DB , struct string );
73			static DB ng_reverse(DB , size_t);
74			static DB ng_load(const char );
75			static void ng_write(DB , DB , int);
76			static void ng_rwrite(DB , DB , int);
77			static void usage(void);
78			static void cleanup(void);
79
80			#ifdef DEBUG_NG
81			static int debug = 0;
82			static void ng_dump(DB *);
83			static void ng_rdump(DB *);
84			#endif /* DEBUG_NG */
85
86
87			static const char ng_empty[] = "";
88			#define NG_EMPTY(a) ((a) ? (a) : ng_empty)
89
90			static char *dbname = _PATH_NETGROUP_DB;
91
92			int
93			main(int argc, char *argv[])
94			{
95			char buf[PATH_MAX], *fname = _PATH_NETGROUP;
96			DB db, ndb, hdb, udb;
97			int ch;
98
99			if (pledge("stdio rpath wpath cpath flock", NULL) == -1)
100			err(1, "pledge");
101
102			while ((ch = getopt(argc, argv, "do:")) != -1)
103			switch (ch) {
104			#ifdef DEBUG_NG
105			case 'd':
106			debug++;
107			break;
108			#endif
109			case 'o':
110			dbname = optarg;
111			break;
112
113			case '?':
114			default:
115			usage();
116			}
117
118			argc -= optind;
119			argv += optind;
120
121			if (argc == 1)
122			fname = *argv;
123			else if (argc > 1)
124			usage();
125
126			if (atexit(cleanup))
127			err(1, "Cannot install exit handler");
128
129			/* Read and parse the netgroup file */
130			ndb = ng_load(fname);
131			#ifdef DEBUG_NG
132			if (debug) {
133			(void) fprintf(stderr, "#### Database\n");
134			ng_dump(ndb);
135			}
136			#endif
137
138			/* Reverse the database by host */
139			hdb = ng_reverse(ndb, offsetof(struct netgroup, ng_host));
140			#ifdef DEBUG_NG
141			if (debug) {
142			(void) fprintf(stderr, "#### Reverse by host\n");
143			ng_rdump(hdb);
144			}
145			#endif
146
147			/* Reverse the database by user */
148			udb = ng_reverse(ndb, offsetof(struct netgroup, ng_user));
149			#ifdef DEBUG_NG
150			if (debug) {
151			(void) fprintf(stderr, "#### Reverse by user\n");
152			ng_rdump(udb);
153			}
154			#endif
155
156			(void) snprintf(buf, sizeof(buf), "%s.tmp", dbname);
157
158			db = dbopen(buf, O_RDWR \| O_CREAT \| O_EXCL,
159			(S_IRUSR \| S_IWUSR \| S_IRGRP \| S_IROTH), DB_HASH, NULL);
160			if (!db)
161			err(1, "%s", buf);
162
163			ng_write(db, ndb, _NG_KEYBYNAME);
164			ng_rwrite(db, udb, _NG_KEYBYUSER);
165			ng_rwrite(db, hdb, _NG_KEYBYHOST);
166
167			if ((db->close)(db))
168			err(1, "Error closing database");
169
170			if (rename(buf, dbname) == -1)
171			err(1, "Cannot rename `%s' to `%s'", buf, dbname);
172
173			return 0;
174			}
175
176
177			/*
178			* cleanup(): Remove temporary files upon exit
179			*/
180			static void
181			cleanup(void)
182			{
183			char buf[PATH_MAX];
184
185			(void) snprintf(buf, sizeof(buf), "%s.tmp", dbname);
186			(void) unlink(buf);
187			}
188
189
190
191			/*
192			* ng_load(): Load the netgroup database from a file
193			*/
194			static DB *
195			ng_load(const char *fname)
196			{
197			FILE *fp;
198			DB *db;
199			char buf, p, *name;
200			size_t size;
201			struct nentry tail, head, *e;
202			struct netgroup *ng;
203			DBT data, key;
204
205			/* Open the netgroup file */
206			if ((fp = fopen(fname, "r")) == NULL)
207			err(1, "%s", fname);
208
209			db = dbopen(NULL, O_RDWR \| O_CREAT \| O_EXCL, 0, DB_HASH, NULL);
210
211			if (db == NULL)
212			err(1, "dbopen");
213
214			while ((buf = get_line(fp, &size)) != NULL) {
215			tail = head = NULL;
216			p = buf;
217
218			while (p != NULL) {
219			switch (_ng_parse(&p, &name, &ng)) {
220			case _NG_NONE:
221			/* done with this one */
222			p = NULL;
223			free(buf);
224			if (head == NULL)
225			break;
226
227			key.data = (u_char *) head->n_name;
228			key.size = strlen(head->n_name) + 1;
229			data.data = (u_char *) & head;
230			data.size = sizeof(head);
231			switch ((db->put)(db, &key, &data,
232			R_NOOVERWRITE)) {
233			case 0:
234			break;
235
236			case 1:
237			warnx("Duplicate entry netgroup `%s'",
238			head->n_name);
239			break;
240
241			case -1:
242			err(1, "put");
243			break;
244
245			default:
246			abort();
247			break;
248			}
249			break;
250
251			case _NG_NAME:
252			e = emalloc(sizeof(struct nentry));
253			e->n_type = _NG_NAME;
254			e->n_name = name;
255			e->n_next = NULL;
256			e->n_size = size;
257			if (tail == NULL)
258			head = tail = e;
259			else {
260			tail->n_next = e;
261			tail = e;
262			}
263			break;
264
265			case _NG_GROUP:
266			if (tail == NULL) {
267			char fmt[BUFSIZ];
268			_ng_print(fmt, sizeof(fmt), ng);
269			errx(1, "no netgroup key for %s", fmt);
270			} else {
271			e = emalloc(sizeof(struct nentry));
272			e->n_type = _NG_GROUP;
273			e->n_group = ng;
274			e->n_next = NULL;
275			e->n_size = size;
276			tail->n_next = e;
277			tail = e;
278			}
279			break;
280
281			default:
282			abort();
283			break;
284			}
285			}
286			}
287			(void) fclose(fp);
288			return db;
289			}
290
291
292			/*
293			* ng_insert(): Insert named key into the database, and return its associated
294			* string database
295			*/
296			static DB *
297			ng_insert(DB db, const char name)
298			{
299			DB *xdb = NULL;
300			DBT key, data;
301
302			key.data = (u_char *) name;
303			key.size = strlen(name) + 1;
304
305			switch ((db->get)(db, &key, &data, 0)) {
306			case 0:
307			memcpy(&xdb, data.data, sizeof(xdb));
308			break;
309
310			case 1:
311			xdb = dbopen(NULL, O_RDWR \| O_CREAT \| O_EXCL, 0, DB_HASH, NULL);
312			if (xdb == NULL)
313			err(1, "dbopen");
314
315			data.data = (u_char *) & xdb;
316			data.size = sizeof(xdb);
317			switch ((db->put)(db, &key, &data, R_NOOVERWRITE)) {
318			case 0:
319			break;
320
321			case -1:
322			err(1, "db put `%s'", name);
323			break;
324
325			case 1:
326			default:
327			abort();
328			}
329			break;
330
331			case -1:
332			err(1, "db get `%s'", name);
333			break;
334
335			default:
336			abort();
337			break;
338			}
339
340			return xdb;
341			}
342
343
344			/*
345			* ng_reventry(): Recursively add all the netgroups to the group entry.
346			*/
347			static void
348			ng_reventry(DB db, DB udb, struct nentry fe, char name, size_t s,
349			struct stringlist *ss)
350			{
351			DBT key, data;
352			struct nentry *e;
353			struct netgroup *ng;
354			struct nentry *rfe;
355			char *p;
356			DB *xdb;
357
358			if (_ng_sl_find(ss, fe->n_name) != NULL) {
359			warnx("Cycle in netgroup `%s'", name);
360			return;
361			}
362			if (_ng_sl_add(ss, fe->n_name) == -1) {
363			warn(NULL);
364			return;
365			}
366
367			for (e = fe->n_next; e != NULL; e = e->n_next)
368			switch (e->n_type) {
369			case _NG_GROUP:
370			ng = e->n_group;
371			p = _ng_makekey(((char )(((char ) ng) + s)),
372			ng->ng_domain, e->n_size);
373			xdb = ng_insert(udb, p);
374			key.data = (u_char *) name;
375			key.size = strlen(name) + 1;
376			data.data = NULL;
377			data.size = 0;
378			switch ((xdb->put)(xdb, &key, &data, R_NOOVERWRITE)) {
379			case 0:
380			case 1:
381			break;
382
383			case -1:
384			err(1, "db put `%s'", name);
385			return;
386
387			default:
388			abort();
389			break;
390			}
391			free(p);
392			break;
393
394			case _NG_NAME:
395			key.data = (u_char *) e->n_name;
396			key.size = strlen(e->n_name) + 1;
397			switch ((db->get)(db, &key, &data, 0)) {
398			case 0:
399			(void) memcpy(&rfe, data.data, sizeof(rfe));
400			ng_reventry(db, udb, rfe, name, s, ss);
401			break;
402
403			case 1:
404			break;
405
406			case -1:
407			err(1, "db get `%s'", e->n_name);
408			return;
409
410			default:
411			abort();
412			return;
413			}
414			break;
415
416			default:
417			abort();
418			break;
419			}
420			}
421
422
423			/*
424			* ng_reverse(): Reverse the database
425			*/
426			static DB *
427			ng_reverse(DB *db, size_t s)
428			{
429			int pos;
430			struct stringlist *sl;
431			DBT key, data;
432			struct nentry *fe;
433			DB *udb;
434
435			udb = dbopen(NULL, O_RDWR \| O_CREAT \| O_EXCL, 0, DB_HASH, NULL);
436
437			if (udb == NULL)
438			err(1, "dbopen");
439
440			for (pos = R_FIRST;; pos = R_NEXT)
441			switch ((db->seq)(db, &key, &data, pos)) {
442			case 0:
443			sl = _ng_sl_init();
444			memcpy(&fe, data.data, sizeof(fe));
445			ng_reventry(db, udb, fe, (char *) key.data, s, sl);
446			_ng_sl_free(sl, 0);
447			break;
448
449			case 1:
450			return udb;
451
452			case -1:
453			err(1, "seq");
454			return udb;
455			}
456
457			return udb;
458			}
459
460
461			/*
462			* ng_print(): Pretty print a netgroup entry
463			*/
464			static void
465			ng_print(struct nentry e, struct string str)
466			{
467			char *ptr = emalloc(e->n_size);
468
469			if (e->n_next == NULL) {
470			str_append(str, "", ' ');
471			return;
472			}
473
474			for (e = e->n_next; e != NULL; e = e->n_next) {
475			switch (e->n_type) {
476			case _NG_NAME:
477			(void) snprintf(ptr, e->n_size, "%s", e->n_name);
478			break;
479
480			case _NG_GROUP:
481			(void) snprintf(ptr, e->n_size, "(%s,%s,%s)",
482			NG_EMPTY(e->n_group->ng_host),
483			NG_EMPTY(e->n_group->ng_user),
484			NG_EMPTY(e->n_group->ng_domain));
485			break;
486
487			default:
488			errx(1, "Internal error: Bad netgroup type");
489			break;
490			}
491			str_append(str, ptr, ' ');
492			}
493			free(ptr);
494			}
495
496
497			/*
498			* ng_rprint(): Pretty print all reverse netgroup mappings in the given entry
499			*/
500			static void
501			ng_rprint(DB db, struct string str)
502			{
503			int pos;
504			DBT key, data;
505
506			for (pos = R_FIRST;; pos = R_NEXT)
507			switch ((db->seq)(db, &key, &data, pos)) {
508			case 0:
509			str_append(str, (char *) key.data, ',');
510			break;
511
512			case 1:
513			return;
514
515			default:
516			err(1, "seq");
517			break;
518			}
519			}
520
521
522			#ifdef DEBUG_NG
523			/*
524			* ng_dump(): Pretty print all netgroups in the given database
525			*/
526			static void
527			ng_dump(DB *db)
528			{
529			int pos;
530			DBT key, data;
531			struct nentry *e;
532			struct string buf;
533
534			for (pos = R_FIRST;; pos = R_NEXT)
535			switch ((db->seq)(db, &key, &data, pos)) {
536			case 0:
537			memcpy(&e, data.data, sizeof(e));
538			str_init(&buf);
539			assert(e->n_type == _NG_NAME);
540
541			ng_print(e, &buf);
542			(void) fprintf(stderr, "%s\t%s\n", e->n_name,
543			buf.s_str ? buf.s_str : "");
544			str_free(&buf);
545			break;
546
547			case 1:
548			return;
549
550			default:
551			err(1, "seq");
552			return;
553			}
554			}
555
556
557			/*
558			* ng_rdump(): Pretty print all reverse mappings in the given database
559			*/
560			static void
561			ng_rdump(DB *db)
562			{
563			int pos;
564			DBT key, data;
565			DB *xdb;
566			struct string buf;
567
568			for (pos = R_FIRST;; pos = R_NEXT)
569			switch ((db->seq)(db, &key, &data, pos)) {
570			case 0:
571			memcpy(&xdb, data.data, sizeof(xdb));
572			str_init(&buf);
573			ng_rprint(xdb, &buf);
574			(void) fprintf(stderr, "%s\t%s\n",
575			(char *) key.data, buf.s_str ? buf.s_str : "");
576			str_free(&buf);
577			break;
578
579			case 1:
580			return;
581
582			default:
583			err(1, "seq");
584			return;
585			}
586			}
587			#endif /* DEBUG_NG */
588
589
590			/*
591			* ng_write(): Dump the database into a file.
592			*/
593			static void
594			ng_write(DB odb, DB idb, int k)
595			{
596			int pos;
597			DBT key, data;
598			struct nentry *e;
599			struct string skey, sdata;
600
601			for (pos = R_FIRST;; pos = R_NEXT)
602			switch ((idb->seq)(idb, &key, &data, pos)) {
603			case 0:
604			memcpy(&e, data.data, sizeof(e));
605			str_init(&skey);
606			str_init(&sdata);
607			assert(e->n_type == _NG_NAME);
608
609			str_prepend(&skey, e->n_name, k);
610			ng_print(e, &sdata);
611			key.data = (u_char *) skey.s_str;
612			key.size = skey.s_len + 1;
613			data.data = (u_char *) sdata.s_str;
614			data.size = sdata.s_len + 1;
615
616			switch ((odb->put)(odb, &key, &data, R_NOOVERWRITE)) {
617			case 0:
618			break;
619
620			case -1:
621			err(1, "put");
622			break;
623
624			case 1:
625			default:
626			abort();
627			break;
628			}
629
630			str_free(&skey);
631			str_free(&sdata);
632			break;
633
634			case 1:
635			return;
636
637			default:
638			err(1, "seq");
639			return;
640			}
641			}
642
643
644			/*
645			* ng_rwrite(): Write the database
646			*/
647			static void
648			ng_rwrite(DB odb, DB idb, int k)
649			{
650			int pos;
651			DBT key, data;
652			DB *xdb;
653			struct string skey, sdata;
654
655			for (pos = R_FIRST;; pos = R_NEXT)
656			switch ((idb->seq)(idb, &key, &data, pos)) {
657			case 0:
658			memcpy(&xdb, data.data, sizeof(xdb));
659			str_init(&skey);
660			str_init(&sdata);
661
662			str_prepend(&skey, (char *) key.data, k);
663			ng_rprint(xdb, &sdata);
664			key.data = (u_char *) skey.s_str;
665			key.size = skey.s_len + 1;
666			data.data = (u_char *) sdata.s_str;
667			data.size = sdata.s_len + 1;
668
669			switch ((odb->put)(odb, &key, &data, R_NOOVERWRITE)) {
670			case 0:
671			break;
672
673			case -1:
674			err(1, "put");
675			break;
676
677			case 1:
678			default:
679			abort();
680			break;
681			}
682
683			str_free(&skey);
684			str_free(&sdata);
685			break;
686
687			case 1:
688			return;
689
690			default:
691			err(1, "seq");
692			return;
693			}
694			}
695
696
697			/*
698			* usage(): Print usage message and exit
699			*/
700			static void
701			usage(void)
702			{
703			extern const char *__progname;
704
705			fprintf(stderr, "usage: %s [-o database] file\n", __progname);
706			exit(1);
707			}