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 39 #include <sys/types.h> 40 41 #include <rpc/rpc.h> 42 #include <rpcsvc/yp_prot.h> 43 #include <rpcsvc/ypclnt.h> 44 45 #include <err.h> 46 #include <grp.h> 47 #include <netdb.h> 48 #include <pwd.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <unistd.h> 53 54 #include "hash.h" 55 56 #ifndef lint 57 static const char rcsid[] = 58 "$Id: mknetid.c,v 1.9 1997/12/15 07:19:41 charnier Exp $"; 59 #endif /* not lint */ 60 61 #define LINSIZ 1024 62 #define OPSYS "unix" 63 64 /* Default location of group file. */ 65 char *groupfile = _PATH_GROUP; 66 /* Default location of master.passwd file. */ 67 char *passfile = _PATH_PASSWD; 68 /* Default location of hosts file. */ 69 char *hostsfile = _PATH_HOSTS; 70 /* Default location of netid file */ 71 char *netidfile = "/etc/netid"; 72 73 /* 74 * Stored hash table of 'reverse' group member database 75 * which we will construct. 76 */ 77 struct member_entry *mtable[TABLESIZE]; 78 79 /* 80 * Dupe table: used to keep track of entries so we don't 81 * print the same thing twice. 82 */ 83 struct member_entry *dtable[TABLESIZE]; 84 85 extern struct group *_getgrent __P(( void )); 86 extern int _setgrent __P(( void )); 87 extern void _endgrent __P(( void )); 88 89 static void 90 usage() 91 { 92 fprintf (stderr, "%s\n%s\n", 93 "usage: mknetid [-q] [-g group_file] [-p passwd_file] [-h hosts_file]", 94 " [-d netid_file] [-d domain]"); 95 exit(1); 96 } 97 98 extern FILE *_gr_fp; 99 100 int 101 main(argc, argv) 102 int argc; 103 char *argv[]; 104 { 105 FILE *gfp, *pfp, *hfp, *nfp; 106 char readbuf[LINSIZ]; 107 char writebuf[LINSIZ]; 108 struct group *gr; 109 struct grouplist *glist; 110 char *domain; 111 int ch; 112 gid_t i; 113 char *ptr, *pidptr, *gidptr, *hptr; 114 int quiet = 0; 115 116 while ((ch = getopt(argc, argv, "g:p:h:n:d:q")) != -1) { 117 switch(ch) { 118 case 'g': 119 groupfile = optarg; 120 break; 121 case 'p': 122 passfile = optarg; 123 break; 124 case 'h': 125 hostsfile = optarg; 126 break; 127 case 'n': 128 netidfile = optarg; 129 break; 130 case 'd': 131 domain = optarg; 132 break; 133 case 'q': 134 quiet++; 135 break; 136 default: 137 usage(); 138 break; 139 } 140 } 141 142 if (domain == NULL) { 143 if (yp_get_default_domain(&domain)) 144 errx(1, "no domain name specified and default \ 145 domain not set"); 146 } 147 148 if ((gfp = fopen(groupfile, "r")) == NULL) { 149 err(1, "%s", groupfile); 150 } 151 152 if ((pfp = fopen(passfile, "r")) == NULL) { 153 err(1, "%s", passfile); 154 } 155 156 if ((hfp = fopen(hostsfile, "r")) == NULL) { 157 err(1, "%s", hostsfile); 158 } 159 160 if ((nfp = fopen(netidfile, "r")) == NULL) { 161 /* netid is optional -- just continue */ 162 nfp = NULL; 163 } 164 165 _gr_fp = gfp; 166 167 /* Load all the group membership info into a hash table. */ 168 169 _setgrent(); 170 while((gr = _getgrent()) != NULL) { 171 while(*gr->gr_mem) { 172 mstore(mtable, *gr->gr_mem, gr->gr_gid, 0); 173 gr->gr_mem++; 174 } 175 } 176 177 fclose(gfp); 178 _endgrent(); 179 180 /* 181 * Now parse the passwd database, spewing out the extra 182 * group information we just stored if necessary. 183 */ 184 while(fgets(readbuf, LINSIZ, pfp)) { 185 if ((ptr = strchr(readbuf, ':')) == NULL) 186 warnx("bad passwd file entry: %s", readbuf); 187 *ptr = '\0'; 188 ptr++; 189 if ((ptr = strchr(ptr, ':')) == NULL) 190 warnx("bad passwd file entry: %s", readbuf); 191 *ptr = '\0'; 192 ptr++; 193 pidptr = ptr; 194 if ((ptr = strchr(ptr, ':')) == NULL) 195 warnx("bad passwd file entry: %s", readbuf); 196 *ptr = '\0'; 197 ptr++; 198 gidptr = ptr; 199 if ((ptr = strchr(ptr, ':')) == NULL) 200 warnx("bad passwd file entry: %s", readbuf); 201 *ptr = '\0'; 202 i = atol(gidptr); 203 204 snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS, 205 pidptr, domain); 206 207 if (lookup(dtable, writebuf)) { 208 if (!quiet) 209 warnx("duplicate netid '%s.%s@%s' -- skipping", 210 OPSYS, pidptr, domain); 211 continue; 212 } else { 213 mstore(dtable, writebuf, 0, 1); 214 } 215 printf("%s.%s@%s %s:%s", OPSYS, pidptr, domain, pidptr, gidptr); 216 if ((glist = lookup(mtable, (char *)&readbuf)) != NULL) { 217 while(glist) { 218 if (glist->groupid != i) 219 printf(",%lu", (u_long)glist->groupid); 220 glist = glist->next; 221 } 222 } 223 printf ("\n"); 224 } 225 226 fclose(pfp); 227 228 /* 229 * Now parse the hosts database (this part sucks). 230 */ 231 232 while ((ptr = fgets(readbuf, LINSIZ, hfp))) { 233 if (*ptr == '#') 234 continue; 235 if (!(hptr = strpbrk(ptr, "#\n"))) 236 continue; 237 *hptr = '\0'; 238 if (!(hptr = strpbrk(ptr, " \t"))) 239 continue; 240 *hptr++ = '\0'; 241 ptr = hptr; 242 while (*ptr == ' ' || *ptr == '\t') 243 ptr++; 244 if (!(hptr = strpbrk(ptr, " \t"))) 245 continue; 246 *hptr++ = '\0'; 247 snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS, 248 ptr, domain); 249 if (lookup(dtable, (char *)&writebuf)) { 250 if (!quiet) 251 warnx("duplicate netid '%s' -- skipping", 252 writebuf); 253 continue; 254 } else { 255 mstore(dtable, (char *)&writebuf, 0, 1); 256 } 257 printf ("%s.%s@%s 0:%s\n", OPSYS, ptr, domain, ptr); 258 } 259 260 fclose(hfp); 261 262 /* 263 * Lastly, copy out any extra information in the netid 264 * file. If it's not open, just ignore it: it's optional anyway. 265 */ 266 267 if (nfp != NULL) { 268 while(fgets(readbuf, LINSIZ, nfp)) { 269 if (readbuf[0] == '#') 270 continue; 271 if ((ptr = strpbrk((char*)&readbuf, " \t")) == NULL) { 272 warnx("bad netid entry: '%s'", readbuf); 273 continue; 274 } 275 276 writebuf[0] = *ptr; 277 *ptr = '\0'; 278 if (lookup(dtable, (char *)&readbuf)) { 279 if (!quiet) 280 warnx("duplicate netid '%s' -- skipping", 281 readbuf); 282 continue; 283 } else { 284 mstore(dtable, (char *)&readbuf, 0, 1); 285 } 286 *ptr = writebuf[0]; 287 printf("%s",readbuf); 288 } 289 fclose(nfp); 290 } 291 292 exit(0); 293 } 294