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