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 " [-n 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 domain = NULL; 115 while ((ch = getopt(argc, argv, "g:p:h:n:d:q")) != -1) { 116 switch(ch) { 117 case 'g': 118 groupfile = optarg; 119 break; 120 case 'p': 121 passfile = optarg; 122 break; 123 case 'h': 124 hostsfile = optarg; 125 break; 126 case 'n': 127 netidfile = optarg; 128 break; 129 case 'd': 130 domain = optarg; 131 break; 132 case 'q': 133 quiet++; 134 break; 135 default: 136 usage(); 137 break; 138 } 139 } 140 141 if (domain == NULL) { 142 if (yp_get_default_domain(&domain)) 143 errx(1, "no domain name specified and default \ 144 domain not set"); 145 } 146 147 if ((gfp = fopen(groupfile, "r")) == NULL) { 148 err(1, "%s", groupfile); 149 } 150 151 if ((pfp = fopen(passfile, "r")) == NULL) { 152 err(1, "%s", passfile); 153 } 154 155 if ((hfp = fopen(hostsfile, "r")) == NULL) { 156 err(1, "%s", hostsfile); 157 } 158 159 if ((nfp = fopen(netidfile, "r")) == NULL) { 160 /* netid is optional -- just continue */ 161 nfp = NULL; 162 } 163 164 _gr_fp = gfp; 165 166 /* Load all the group membership info into a hash table. */ 167 168 _setgrent(); 169 while((gr = _getgrent()) != NULL) { 170 while(*gr->gr_mem) { 171 mstore(mtable, *gr->gr_mem, gr->gr_gid, 0); 172 gr->gr_mem++; 173 } 174 } 175 176 fclose(gfp); 177 _endgrent(); 178 179 /* 180 * Now parse the passwd database, spewing out the extra 181 * group information we just stored if necessary. 182 */ 183 while(fgets(readbuf, LINSIZ, pfp)) { 184 /* Ignore comments: ^[ \t]*# */ 185 for (ptr = readbuf; *ptr != '\0'; ptr++) 186 if (*ptr != ' ' && *ptr != '\t') 187 break; 188 if (*ptr == '#' || *ptr == '\0') 189 continue; 190 if ((ptr = strchr(readbuf, ':')) == NULL) { 191 warnx("bad passwd file entry: %s", readbuf); 192 continue; 193 } 194 *ptr = '\0'; 195 ptr++; 196 if ((ptr = strchr(ptr, ':')) == NULL) { 197 warnx("bad passwd file entry: %s", readbuf); 198 continue; 199 } 200 *ptr = '\0'; 201 ptr++; 202 pidptr = ptr; 203 if ((ptr = strchr(ptr, ':')) == NULL) { 204 warnx("bad passwd file entry: %s", readbuf); 205 continue; 206 } 207 *ptr = '\0'; 208 ptr++; 209 gidptr = ptr; 210 if ((ptr = strchr(ptr, ':')) == NULL) { 211 warnx("bad passwd file entry: %s", readbuf); 212 continue; 213 } 214 *ptr = '\0'; 215 i = atol(gidptr); 216 217 snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS, 218 pidptr, domain); 219 220 if (lookup(dtable, writebuf)) { 221 if (!quiet) 222 warnx("duplicate netid '%s.%s@%s' -- skipping", 223 OPSYS, pidptr, domain); 224 continue; 225 } else { 226 mstore(dtable, writebuf, 0, 1); 227 } 228 printf("%s.%s@%s %s:%s", OPSYS, pidptr, domain, pidptr, gidptr); 229 if ((glist = lookup(mtable, (char *)&readbuf)) != NULL) { 230 while(glist) { 231 if (glist->groupid != i) 232 printf(",%lu", (u_long)glist->groupid); 233 glist = glist->next; 234 } 235 } 236 printf ("\n"); 237 } 238 239 fclose(pfp); 240 241 /* 242 * Now parse the hosts database (this part sucks). 243 */ 244 245 while ((ptr = fgets(readbuf, LINSIZ, hfp))) { 246 if (*ptr == '#') 247 continue; 248 if (!(hptr = strpbrk(ptr, "#\n"))) 249 continue; 250 *hptr = '\0'; 251 if (!(hptr = strpbrk(ptr, " \t"))) 252 continue; 253 *hptr++ = '\0'; 254 ptr = hptr; 255 while (*ptr == ' ' || *ptr == '\t') 256 ptr++; 257 if (!(hptr = strpbrk(ptr, " \t"))) 258 continue; 259 *hptr++ = '\0'; 260 snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS, 261 ptr, domain); 262 if (lookup(dtable, (char *)&writebuf)) { 263 if (!quiet) 264 warnx("duplicate netid '%s' -- skipping", 265 writebuf); 266 continue; 267 } else { 268 mstore(dtable, (char *)&writebuf, 0, 1); 269 } 270 printf ("%s.%s@%s 0:%s\n", OPSYS, ptr, domain, ptr); 271 } 272 273 fclose(hfp); 274 275 /* 276 * Lastly, copy out any extra information in the netid 277 * file. If it's not open, just ignore it: it's optional anyway. 278 */ 279 280 if (nfp != NULL) { 281 while(fgets(readbuf, LINSIZ, nfp)) { 282 if (readbuf[0] == '#') 283 continue; 284 if ((ptr = strpbrk((char*)&readbuf, " \t")) == NULL) { 285 warnx("bad netid entry: '%s'", readbuf); 286 continue; 287 } 288 289 writebuf[0] = *ptr; 290 *ptr = '\0'; 291 if (lookup(dtable, (char *)&readbuf)) { 292 if (!quiet) 293 warnx("duplicate netid '%s' -- skipping", 294 readbuf); 295 continue; 296 } else { 297 mstore(dtable, (char *)&readbuf, 0, 1); 298 } 299 *ptr = writebuf[0]; 300 printf("%s",readbuf); 301 } 302 fclose(nfp); 303 } 304 305 exit(0); 306 } 307