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 #ifndef lint 59 static const char rcsid[] = 60 "$FreeBSD$"; 61 #endif /* not lint */ 62 63 #define LINSIZ 1024 64 #define OPSYS "unix" 65 66 /* Default location of group file. */ 67 char *groupfile = _PATH_GROUP; 68 /* Default location of master.passwd file. */ 69 char *passfile = _PATH_PASSWD; 70 /* Default location of hosts file. */ 71 char *hostsfile = _PATH_HOSTS; 72 /* Default location of netid file */ 73 char *netidfile = "/etc/netid"; 74 75 /* 76 * Stored hash table of 'reverse' group member database 77 * which we will construct. 78 */ 79 struct member_entry *mtable[TABLESIZE]; 80 81 /* 82 * Dupe table: used to keep track of entries so we don't 83 * print the same thing twice. 84 */ 85 struct member_entry *dtable[TABLESIZE]; 86 87 extern struct group *_getgrent(void); 88 extern int _setgrent(void); 89 extern void _endgrent(void); 90 91 static void 92 usage(void) 93 { 94 fprintf (stderr, "%s\n%s\n", 95 "usage: mknetid [-q] [-g group_file] [-p passwd_file] [-h hosts_file]", 96 " [-n netid_file] [-d domain]"); 97 exit(1); 98 } 99 100 extern FILE *_gr_fp; 101 102 int 103 main(int argc, 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 domain = NULL; 117 while ((ch = getopt(argc, argv, "g:p:h:n:d:q")) != -1) { 118 switch(ch) { 119 case 'g': 120 groupfile = optarg; 121 break; 122 case 'p': 123 passfile = optarg; 124 break; 125 case 'h': 126 hostsfile = optarg; 127 break; 128 case 'n': 129 netidfile = optarg; 130 break; 131 case 'd': 132 domain = optarg; 133 break; 134 case 'q': 135 quiet++; 136 break; 137 default: 138 usage(); 139 break; 140 } 141 } 142 143 if (domain == NULL) { 144 if (yp_get_default_domain(&domain)) 145 errx(1, "no domain name specified and default \ 146 domain not set"); 147 } 148 149 if ((gfp = fopen(groupfile, "r")) == NULL) { 150 err(1, "%s", groupfile); 151 } 152 153 if ((pfp = fopen(passfile, "r")) == NULL) { 154 err(1, "%s", passfile); 155 } 156 157 if ((hfp = fopen(hostsfile, "r")) == NULL) { 158 err(1, "%s", hostsfile); 159 } 160 161 if ((nfp = fopen(netidfile, "r")) == NULL) { 162 /* netid is optional -- just continue */ 163 nfp = NULL; 164 } 165 166 _gr_fp = gfp; 167 168 /* Load all the group membership info into a hash table. */ 169 170 _setgrent(); 171 while((gr = _getgrent()) != NULL) { 172 while(*gr->gr_mem) { 173 mstore(mtable, *gr->gr_mem, gr->gr_gid, 0); 174 gr->gr_mem++; 175 } 176 } 177 178 fclose(gfp); 179 _endgrent(); 180 181 /* 182 * Now parse the passwd database, spewing out the extra 183 * group information we just stored if necessary. 184 */ 185 while(fgets(readbuf, LINSIZ, pfp)) { 186 /* Ignore comments: ^[ \t]*# */ 187 for (ptr = readbuf; *ptr != '\0'; ptr++) 188 if (*ptr != ' ' && *ptr != '\t') 189 break; 190 if (*ptr == '#' || *ptr == '\0') 191 continue; 192 if ((ptr = strchr(readbuf, ':')) == NULL) { 193 warnx("bad passwd file entry: %s", readbuf); 194 continue; 195 } 196 *ptr = '\0'; 197 ptr++; 198 if ((ptr = strchr(ptr, ':')) == NULL) { 199 warnx("bad passwd file entry: %s", readbuf); 200 continue; 201 } 202 *ptr = '\0'; 203 ptr++; 204 pidptr = ptr; 205 if ((ptr = strchr(ptr, ':')) == NULL) { 206 warnx("bad passwd file entry: %s", readbuf); 207 continue; 208 } 209 *ptr = '\0'; 210 ptr++; 211 gidptr = ptr; 212 if ((ptr = strchr(ptr, ':')) == NULL) { 213 warnx("bad passwd file entry: %s", readbuf); 214 continue; 215 } 216 *ptr = '\0'; 217 i = atol(gidptr); 218 219 snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS, 220 pidptr, domain); 221 222 if (lookup(dtable, writebuf)) { 223 if (!quiet) 224 warnx("duplicate netid '%s.%s@%s' -- skipping", 225 OPSYS, pidptr, domain); 226 continue; 227 } else { 228 mstore(dtable, writebuf, 0, 1); 229 } 230 printf("%s.%s@%s %s:%s", OPSYS, pidptr, domain, pidptr, gidptr); 231 if ((glist = lookup(mtable, (char *)&readbuf)) != NULL) { 232 while(glist) { 233 if (glist->groupid != i) 234 printf(",%lu", (u_long)glist->groupid); 235 glist = glist->next; 236 } 237 } 238 printf ("\n"); 239 } 240 241 fclose(pfp); 242 243 /* 244 * Now parse the hosts database (this part sucks). 245 */ 246 247 while ((ptr = fgets(readbuf, LINSIZ, hfp))) { 248 if (*ptr == '#') 249 continue; 250 if (!(hptr = strpbrk(ptr, "#\n"))) 251 continue; 252 *hptr = '\0'; 253 if (!(hptr = strpbrk(ptr, " \t"))) 254 continue; 255 *hptr++ = '\0'; 256 ptr = hptr; 257 while (*ptr == ' ' || *ptr == '\t') 258 ptr++; 259 if (!(hptr = strpbrk(ptr, " \t"))) 260 continue; 261 *hptr++ = '\0'; 262 snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS, 263 ptr, domain); 264 if (lookup(dtable, (char *)&writebuf)) { 265 if (!quiet) 266 warnx("duplicate netid '%s' -- skipping", 267 writebuf); 268 continue; 269 } else { 270 mstore(dtable, (char *)&writebuf, 0, 1); 271 } 272 printf ("%s.%s@%s 0:%s\n", OPSYS, ptr, domain, ptr); 273 } 274 275 fclose(hfp); 276 277 /* 278 * Lastly, copy out any extra information in the netid 279 * file. If it's not open, just ignore it: it's optional anyway. 280 */ 281 282 if (nfp != NULL) { 283 while(fgets(readbuf, LINSIZ, nfp)) { 284 if (readbuf[0] == '#') 285 continue; 286 if ((ptr = strpbrk((char*)&readbuf, " \t")) == NULL) { 287 warnx("bad netid entry: '%s'", readbuf); 288 continue; 289 } 290 291 writebuf[0] = *ptr; 292 *ptr = '\0'; 293 if (lookup(dtable, (char *)&readbuf)) { 294 if (!quiet) 295 warnx("duplicate netid '%s' -- skipping", 296 readbuf); 297 continue; 298 } else { 299 mstore(dtable, (char *)&readbuf, 0, 1); 300 } 301 *ptr = writebuf[0]; 302 printf("%s",readbuf); 303 } 304 fclose(nfp); 305 } 306 307 exit(0); 308 } 309