diff options
Diffstat (limited to 'libexec/revnetgroup/revnetgroup.c')
| -rw-r--r-- | libexec/revnetgroup/revnetgroup.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/libexec/revnetgroup/revnetgroup.c b/libexec/revnetgroup/revnetgroup.c new file mode 100644 index 0000000..7655480 --- /dev/null +++ b/libexec/revnetgroup/revnetgroup.c @@ -0,0 +1,184 @@ +/* + * Copyright (c) 1995 + * Bill Paul <wpaul@ctr.columbia.edu>. 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 Bill Paul. + * 4. Neither the name of the author nor the names of any co-contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul 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. + * + * reverse netgroup map generator program + * + * Written by Bill Paul <wpaul@ctr.columbia.edu> + * Center for Telecommunications Research + * Columbia University, New York City + * + * $Id: revnetgroup.c,v 1.6 1997/02/22 14:22:03 peter Exp $ + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <err.h> +#include "hash.h" + +#ifndef lint +static const char rcsid[] = "$Id: revnetgroup.c,v 1.6 1997/02/22 14:22:03 peter Exp $"; +#endif + +/* Default location of netgroup file. */ +char *netgroup = "/etc/netgroup"; + +/* Stored hash table version of 'forward' netgroup database. */ +struct group_entry *gtable[TABLESIZE]; + +/* + * Stored hash table of 'reverse' netgroup member database + * which we will construct. + */ +struct member_entry *mtable[TABLESIZE]; + +void usage(prog) +char *prog; +{ + fprintf (stderr,"usage: %s -u|-h [-f netgroup file]\n",prog); + exit(1); +} + +extern char *optarg; + +int +main(argc, argv) + int argc; + char *argv[]; +{ + FILE *fp; + char readbuf[LINSIZ]; + struct group_entry *gcur; + struct member_entry *mcur; + char *host, *user, *domain; + int ch; + char *key = NULL, *data = NULL; + int hosts = -1, i; + + if (argc < 2) + usage(argv[0]); + + while ((ch = getopt(argc, argv, "uhf:")) != -1) { + switch(ch) { + case 'u': + if (hosts != -1) { + warnx("please use only one of -u or -h"); + usage(argv[0]); + } + hosts = 0; + break; + case 'h': + if (hosts != -1) { + warnx("please use only one of -u or -h"); + usage(argv[0]); + } + hosts = 1; + break; + case 'f': + netgroup = optarg; + break; + default: + usage(argv[0]); + break; + } + } + + if (hosts == -1) + usage(argv[0]); + + if (strcmp(netgroup, "-")) { + if ((fp = fopen(netgroup, "r")) == NULL) { + err(1,netgroup); + } + } else { + fp = stdin; + } + + /* Stuff all the netgroup names and members into a hash table. */ + while (fgets(readbuf, LINSIZ, fp)) { + if (readbuf[0] == '#') + continue; + /* handle backslash line continuations */ + while(readbuf[strlen(readbuf) - 2] == '\\') { + fgets((char *)&readbuf[strlen(readbuf) - 2], + sizeof(readbuf) - strlen(readbuf), fp); + } + data = NULL; + if ((data = (char *)(strpbrk(readbuf, " \t") + 1)) < (char *)2) + continue; + key = (char *)&readbuf; + *(data - 1) = '\0'; + store(gtable, key, data); + } + + fclose(fp); + + /* + * Find all members of each netgroup and keep track of which + * group they belong to. + */ + for (i = 0; i < TABLESIZE; i++) { + gcur = gtable[i]; + while(gcur) { + __setnetgrent(gcur->key); + while(__getnetgrent(&host, &user, &domain) != NULL) { + if (hosts ? host && strcmp(host,"-") : user && strcmp(user, "-")) + mstore(mtable, hosts ? host : user, gcur->key, domain); + } + gcur = gcur->next; + } + } + + /* Release resources used by the netgroup parser code. */ + __endnetgrent(); + + /* Spew out the results. */ + for (i = 0; i < TABLESIZE; i++) { + mcur = mtable[i]; + while(mcur) { + struct grouplist *tmp; + printf ("%s.%s\t", mcur->key, mcur->domain); + tmp = mcur->groups; + while(tmp) { + printf ("%s", tmp->groupname); + tmp = tmp->next; + if (tmp) + printf(","); + } + mcur = mcur->next; + printf ("\n"); + } + } + + /* Let the OS free all our resources. */ + exit(0); +} |
