libexec/mknetid/mknetid.c

   1 /*
   2  * Copyright (c) 1995, 1996
   3  *      Bill Paul <wpaul@ctr.columbia.edu>.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by Bill Paul.
  16  * 4. Neither the name of the author nor the names of any co-contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  * netid map generator program
  33  *
  34  * Written by Bill Paul <wpaul@ctr.columbia.edu>
  35  * Center for Telecommunications Research
  36  * Columbia University, New York City
  37  *
  38  * $FreeBSD: src/libexec/mknetid/mknetid.c,v 1.11.2.1 2002/11/27 11:03:02 maxim Exp $
  39  * $DragonFly: src/libexec/mknetid/mknetid.c,v 1.3 2003/11/14 03:54:30 dillon Exp $
  40  */
  41
  42 #include <sys/types.h>
  43
  44 #include <rpc/rpc.h>
  45 #include <rpcsvc/yp_prot.h>
  46 #include <rpcsvc/ypclnt.h>
  47
  48 #include <err.h>
  49 #include <grp.h>
  50 #include <netdb.h>
  51 #include <pwd.h>
  52 #include <stdio.h>
  53 #include <stdlib.h>
  54 #include <string.h>
  55 #include <unistd.h>
  56
  57 #include "hash.h"
  58
  59 #define LINSIZ 1024
  60 #define OPSYS "unix"
  61
  62 /* Default location of group file. */
  63 const char *groupfile = _PATH_GROUP;
  64 /* Default location of master.passwd file. */
  65 const char *passfile = _PATH_PASSWD;
  66 /* Default location of hosts file. */
  67 const char *hostsfile = _PATH_HOSTS;
  68 /* Default location of netid file */
  69 const char *netidfile = "/etc/netid";
  70
  71 /*
  72  * Stored hash table of 'reverse' group member database
  73  * which we will construct.
  74  */
  75 struct member_entry *mtable[TABLESIZE];
  76
  77 /*
  78  * Dupe table: used to keep track of entries so we don't
  79  * print the same thing twice.
  80  */
  81 struct member_entry *dtable[TABLESIZE];
  82
  83 extern struct group *_getgrent ( void );
  84 extern int _setgrent ( void );
  85 extern void _endgrent ( void );
  86
  87 static void
  88 usage(void)
  89 {
  90         fprintf (stderr, "%s\n%s\n",
  91         "usage: mknetid [-q] [-g group_file] [-p passwd_file] [-h hosts_file]",
  92         "               [-n netid_file] [-d domain]");
  93         exit(1);
  94 }
  95
  96 extern FILE *_gr_fp;
  97
  98 int
  99 main(int argc, char *argv[])
 100 {
 101         FILE *gfp, *pfp, *hfp, *nfp;
 102         char readbuf[LINSIZ];
 103         char writebuf[LINSIZ];
 104         struct group *gr;
 105         struct grouplist *glist;
 106         char *domain;
 107         int ch;
 108         gid_t i;
 109         char *ptr, *pidptr, *gidptr, *hptr;
 110         int quiet = 0;
 111
 112         domain = NULL;
 113         while ((ch = getopt(argc, argv, "g:p:h:n:d:q")) != -1) {
 114                 switch(ch) {
 115                 case 'g':
 116                         groupfile = optarg;
 117                         break;
 118                 case 'p':
 119                         passfile = optarg;
 120                         break;
 121                 case 'h':
 122                         hostsfile = optarg;
 123                         break;
 124                 case 'n':
 125                         netidfile = optarg;
 126                         break;
 127                 case 'd':
 128                         domain = optarg;
 129                         break;
 130                 case 'q':
 131                         quiet++;
 132                         break;
 133                 default:
 134                         usage();
 135                         break;
 136                 }
 137         }
 138
 139         if (domain == NULL) {
 140                 if (yp_get_default_domain(&domain))
 141                         errx(1, "no domain name specified and default \
 142 domain not set");
 143         }
 144
 145         if ((gfp = fopen(groupfile, "r")) == NULL) {
 146                 err(1, "%s", groupfile);
 147         }
 148
 149         if ((pfp = fopen(passfile, "r")) == NULL) {
 150                 err(1, "%s", passfile);
 151         }
 152
 153         if ((hfp = fopen(hostsfile, "r")) == NULL) {
 154                 err(1, "%s", hostsfile);
 155         }
 156
 157         if ((nfp = fopen(netidfile, "r")) == NULL) {
 158                 /* netid is optional -- just continue */
 159                 nfp = NULL;
 160         }
 161
 162         _gr_fp = gfp;
 163
 164         /* Load all the group membership info into a hash table. */
 165
 166         _setgrent();
 167         while((gr = _getgrent()) != NULL) {
 168                 while(*gr->gr_mem) {
 169                         mstore(mtable, *gr->gr_mem, gr->gr_gid, 0);
 170                         gr->gr_mem++;
 171                 }
 172         }
 173
 174         fclose(gfp);
 175         _endgrent();
 176
 177         /*
 178          * Now parse the passwd database, spewing out the extra
 179          * group information we just stored if necessary.
 180          */
 181         while(fgets(readbuf, LINSIZ, pfp)) {
 182                 /* Ignore comments: ^[ \t]*# */
 183                 for (ptr = readbuf; *ptr != '\0'; ptr++)
 184                         if (*ptr != ' ' && *ptr != '\t')
 185                                 break;
 186                 if (*ptr == '#' || *ptr == '\0')
 187                         continue;
 188                 if ((ptr = strchr(readbuf, ':')) == NULL) {
 189                         warnx("bad passwd file entry: %s", readbuf);
 190                         continue;
 191                 }
 192                 *ptr = '\0';
 193                 ptr++;
 194                 if ((ptr = strchr(ptr, ':')) == NULL) {
 195                         warnx("bad passwd file entry: %s", readbuf);
 196                         continue;
 197                 }
 198                 *ptr = '\0';
 199                 ptr++;
 200                 pidptr = ptr;
 201                 if ((ptr = strchr(ptr, ':')) == NULL) {
 202                         warnx("bad passwd file entry: %s", readbuf);
 203                         continue;
 204                 }
 205                 *ptr = '\0';
 206                 ptr++;
 207                 gidptr = ptr;
 208                 if ((ptr = strchr(ptr, ':')) == NULL) {
 209                         warnx("bad passwd file entry: %s", readbuf);
 210                         continue;
 211                 }
 212                 *ptr = '\0';
 213                 i = atol(gidptr);
 214
 215                 snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS,
 216                                                         pidptr, domain);
 217
 218                 if (lookup(dtable, writebuf)) {
 219                         if (!quiet)
 220                                 warnx("duplicate netid '%s.%s@%s' -- skipping",
 221                                                 OPSYS, pidptr, domain);
 222                         continue;
 223                 } else {
 224                         mstore(dtable, writebuf, 0, 1);
 225                 }
 226                 printf("%s.%s@%s %s:%s", OPSYS, pidptr, domain, pidptr, gidptr);
 227                 if ((glist = lookup(mtable, (char *)&readbuf)) != NULL) {
 228                         while(glist) {
 229                                 if (glist->groupid != i)
 230                                         printf(",%lu", (u_long)glist->groupid);
 231                                 glist = glist->next;
 232                         }
 233                 }
 234                 printf ("\n");
 235         }
 236
 237         fclose(pfp);
 238
 239         /*
 240          * Now parse the hosts database (this part sucks).
 241          */
 242
 243         while ((ptr = fgets(readbuf, LINSIZ, hfp))) {
 244                 if (*ptr == '#')
 245                         continue;
 246                 if (!(hptr = strpbrk(ptr, "#\n")))
 247                         continue;
 248                 *hptr = '\0';
 249                 if (!(hptr = strpbrk(ptr, " \t")))
 250                         continue;
 251                 *hptr++ = '\0';
 252                 ptr = hptr;
 253                 while (*ptr == ' ' || *ptr == '\t')
 254                         ptr++;
 255                 if (!(hptr = strpbrk(ptr, " \t")))
 256                         continue;
 257                 *hptr++ = '\0';
 258                 snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS,
 259                                                                 ptr, domain);
 260                 if (lookup(dtable, (char *)&writebuf)) {
 261                         if (!quiet)
 262                                 warnx("duplicate netid '%s' -- skipping",
 263                                                                 writebuf);
 264                         continue;
 265                 } else {
 266                         mstore(dtable, (char *)&writebuf, 0, 1);
 267                 }
 268                 printf ("%s.%s@%s 0:%s\n", OPSYS, ptr, domain, ptr);
 269         }
 270
 271         fclose(hfp);
 272
 273         /*
 274          * Lastly, copy out any extra information in the netid
 275          * file. If it's not open, just ignore it: it's optional anyway.
 276          */
 277
 278         if (nfp != NULL) {
 279                 while(fgets(readbuf, LINSIZ, nfp)) {
 280                         if (readbuf[0] == '#')
 281                                 continue;
 282                         if ((ptr = strpbrk((char*)&readbuf, " \t")) == NULL) {
 283                                 warnx("bad netid entry: '%s'", readbuf);
 284                                 continue;
 285                         }
 286
 287                         writebuf[0] = *ptr;
 288                         *ptr = '\0';
 289                         if (lookup(dtable, (char *)&readbuf)) {
 290                                 if (!quiet)
 291                                         warnx("duplicate netid '%s' -- skipping",
 292                                                                 readbuf);
 293                                 continue;
 294                         } else {
 295                                 mstore(dtable, (char *)&readbuf, 0, 1);
 296                         }
 297                         *ptr = writebuf[0];
 298                         printf("%s",readbuf);
 299                 }
 300                 fclose(nfp);
 301         }
 302
 303         exit(0);
 304 }