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 "$FreeBSD$"; 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(void); 86 extern int _setgrent(void); 87 extern void _endgrent(void); 88 89 static void 90 usage(void) 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(int argc, char *argv[]) 102 { 103 FILE *gfp, *pfp, *hfp, *nfp; 104 char readbuf[LINSIZ]; 105 char writebuf[LINSIZ]; 106 struct group *gr; 107 struct grouplist *glist; 108 char *domain; 109 int ch; 110 gid_t i; 111 char *ptr, *pidptr, *gidptr, *hptr; 112 int quiet = 0; 113 114 while ((ch = getopt(argc, argv, "g:p:h:n:d:q")) != -1) { 115 switch(ch) { 116 case 'g': 117 groupfile = optarg; 118 break; 119 case 'p': 120 passfile = optarg; 121 break; 122 case 'h': 123 hostsfile = optarg; 124 break; 125 case 'n': 126 netidfile = optarg; 127 break; 128 case 'd': 129 domain = optarg; 130 break; 131 case 'q': 132 quiet++; 133 break; 134 default: 135 usage(); 136 break; 137 } 138 } 139 140 if (domain == NULL) { 141 if (yp_get_default_domain(&domain)) 142 errx(1, "no domain name specified and default \ 143 domain not set"); 144 } 145 146 if ((gfp = fopen(groupfile, "r")) == NULL) { 147 err(1, "%s", groupfile); 148 } 149 150 if ((pfp = fopen(passfile, "r")) == NULL) { 151 err(1, "%s", passfile); 152 } 153 154 if ((hfp = fopen(hostsfile, "r")) == NULL) { 155 err(1, "%s", hostsfile); 156 } 157 158 if ((nfp = fopen(netidfile, "r")) == NULL) { 159 /* netid is optional -- just continue */ 160 nfp = NULL; 161 } 162 163 _gr_fp = gfp; 164 165 /* Load all the group membership info into a hash table. */ 166 167 _setgrent(); 168 while((gr = _getgrent()) != NULL) { 169 while(*gr->gr_mem) { 170 mstore(mtable, *gr->gr_mem, gr->gr_gid, 0); 171 gr->gr_mem++; 172 } 173 } 174 175 fclose(gfp); 176 _endgrent(); 177 178 /* 179 * Now parse the passwd database, spewing out the extra 180 * group information we just stored if necessary. 181 */ 182 while(fgets(readbuf, LINSIZ, pfp)) { 183 if ((ptr = strchr(readbuf, ':')) == NULL) 184 warnx("bad passwd file entry: %s", readbuf); 185 *ptr = '\0'; 186 ptr++; 187 if ((ptr = strchr(ptr, ':')) == NULL) 188 warnx("bad passwd file entry: %s", readbuf); 189 *ptr = '\0'; 190 ptr++; 191 pidptr = ptr; 192 if ((ptr = strchr(ptr, ':')) == NULL) 193 warnx("bad passwd file entry: %s", readbuf); 194 *ptr = '\0'; 195 ptr++; 196 gidptr = ptr; 197 if ((ptr = strchr(ptr, ':')) == NULL) 198 warnx("bad passwd file entry: %s", readbuf); 199 *ptr = '\0'; 200 i = atol(gidptr); 201 202 snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS, 203 pidptr, domain); 204 205 if (lookup(dtable, writebuf)) { 206 if (!quiet) 207 warnx("duplicate netid '%s.%s@%s' -- skipping", 208 OPSYS, pidptr, domain); 209 continue; 210 } else { 211 mstore(dtable, writebuf, 0, 1); 212 } 213 printf("%s.%s@%s %s:%s", OPSYS, pidptr, domain, pidptr, gidptr); 214 if ((glist = lookup(mtable, (char *)&readbuf)) != NULL) { 215 while(glist) { 216 if (glist->groupid != i) 217 printf(",%lu", (u_long)glist->groupid); 218 glist = glist->next; 219 } 220 } 221 printf ("\n"); 222 } 223 224 fclose(pfp); 225 226 /* 227 * Now parse the hosts database (this part sucks). 228 */ 229 230 while ((ptr = fgets(readbuf, LINSIZ, hfp))) { 231 if (*ptr == '#') 232 continue; 233 if (!(hptr = strpbrk(ptr, "#\n"))) 234 continue; 235 *hptr = '\0'; 236 if (!(hptr = strpbrk(ptr, " \t"))) 237 continue; 238 *hptr++ = '\0'; 239 ptr = hptr; 240 while (*ptr == ' ' || *ptr == '\t') 241 ptr++; 242 if (!(hptr = strpbrk(ptr, " \t"))) 243 continue; 244 *hptr++ = '\0'; 245 snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS, 246 ptr, domain); 247 if (lookup(dtable, (char *)&writebuf)) { 248 if (!quiet) 249 warnx("duplicate netid '%s' -- skipping", 250 writebuf); 251 continue; 252 } else { 253 mstore(dtable, (char *)&writebuf, 0, 1); 254 } 255 printf ("%s.%s@%s 0:%s\n", OPSYS, ptr, domain, ptr); 256 } 257 258 fclose(hfp); 259 260 /* 261 * Lastly, copy out any extra information in the netid 262 * file. If it's not open, just ignore it: it's optional anyway. 263 */ 264 265 if (nfp != NULL) { 266 while(fgets(readbuf, LINSIZ, nfp)) { 267 if (readbuf[0] == '#') 268 continue; 269 if ((ptr = strpbrk((char*)&readbuf, " \t")) == NULL) { 270 warnx("bad netid entry: '%s'", readbuf); 271 continue; 272 } 273 274 writebuf[0] = *ptr; 275 *ptr = '\0'; 276 if (lookup(dtable, (char *)&readbuf)) { 277 if (!quiet) 278 warnx("duplicate netid '%s' -- skipping", 279 readbuf); 280 continue; 281 } else { 282 mstore(dtable, (char *)&readbuf, 0, 1); 283 } 284 *ptr = writebuf[0]; 285 printf("%s",readbuf); 286 } 287 fclose(nfp); 288 } 289 290 exit(0); 291 } 292