usr.sbin/yp_mkdb/yp_mkdb.c

   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
  35 #include <sys/cdefs.h>
  36 __FBSDID("$FreeBSD$");
  37
  38 #include <err.h>
  39 #include <fcntl.h>
  40 #include <limits.h>
  41 #include <stdint.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45 #include <time.h>
  46 #include <unistd.h>
  47 #include <rpc/rpc.h>
  48 #include <rpcsvc/yp.h>
  49 #include <sys/param.h>
  50 #include <sys/types.h>
  51 #include <sys/stat.h>
  52 #include "yp_extern.h"
  53 #include "ypxfr_extern.h"
  54
  55 char *yp_dir = "";      /* No particular default needed. */
  56 int debug = 1;
  57
  58 static void
  59 usage(void)
  60 {
  61         fprintf(stderr, "%s\n%s\n%s\n%s\n",
  62         "usage: yp_mkdb -c",
  63         "       yp_mkdb -u dbname",
  64         "       yp_mkdb [-c] [-b] [-s] [-f] [-i inputfile] [-o outputfile]",
  65         "               [-d domainname ] [-m mastername] inputfile dbname");
  66         exit(1);
  67 }
  68
  69 #define PERM_SECURE (S_IRUSR|S_IWUSR)
  70 static DB *
  71 open_db(char *path, int flags)
  72 {
  73         extern HASHINFO openinfo;
  74
  75         return(dbopen(path, flags, PERM_SECURE, DB_HASH, &openinfo));
  76 }
  77
  78 static void
  79 unwind(char *map)
  80 {
  81         DB *dbp;
  82         DBT key, data;
  83
  84         dbp = open_db(map, O_RDONLY);
  85
  86         if (dbp == NULL)
  87                 err(1, "open_db(%s) failed", map);
  88
  89         key.data = NULL;
  90         while (yp_next_record(dbp, &key, &data, 1, 1) == YP_TRUE)
  91                 printf("%.*s %.*s\n", (int)key.size, key.data, (int)data.size,
  92                     data.data);
  93
  94         (void)(dbp->close)(dbp);
  95         return;
  96 }
  97
  98 int
  99 main(int argc, char *argv[])
 100 {
 101         int ch;
 102         int un = 0;
 103         int clear = 0;
 104         int filter_plusminus = 0;
 105         char *infile = NULL;
 106         char *map = NULL;
 107         char *domain = NULL;
 108         char *infilename = NULL;
 109         char *outfilename = NULL;
 110         char *mastername = NULL;
 111         int interdom = 0;
 112         int secure = 0;
 113         DB *dbp;
 114         DBT key, data;
 115         char buf[10240];
 116         char *keybuf, *datbuf;
 117         FILE *ifp;
 118         char hname[MAXHOSTNAMELEN + 2];
 119
 120         while ((ch = getopt(argc, argv, "uhcbsfd:i:o:m:")) != -1) {
 121                 switch (ch) {
 122                 case 'f':
 123                         filter_plusminus++;
 124                         break;
 125                 case 'u':
 126                         un++;
 127                         break;
 128                 case 'c':
 129                         clear++;
 130                         break;
 131                 case 'b':
 132                         interdom++;
 133                         break;
 134                 case 's':
 135                         secure++;
 136                         break;
 137                 case 'd':
 138                         domain = optarg;
 139                         break;
 140                 case 'i':
 141                         infilename = optarg;
 142                         break;
 143                 case 'o':
 144                         outfilename = optarg;
 145                         break;
 146                 case 'm':
 147                         mastername = optarg;
 148                         break;
 149                 case 'h':
 150                 default:
 151                         usage();
 152                         break;
 153                 }
 154         }
 155
 156         argc -= optind;
 157         argv += optind;
 158
 159         if (un) {
 160                 map = argv[0];
 161                 if (map == NULL)
 162                         usage();
 163                 unwind(map);
 164                 exit(0);
 165
 166         }
 167
 168         infile = argv[0];
 169         map = argv[1];
 170
 171         if (infile == NULL || map == NULL) {
 172                 if (clear)
 173                         goto doclear;
 174                 usage();
 175         }
 176
 177         if (mastername == NULL) {
 178                 if (gethostname((char *)&hname, sizeof(hname)) == -1)
 179                         err(1, "gethostname() failed");
 180                 mastername = (char *)&hname;
 181         }
 182
 183         /*
 184          * Note that while we can read from stdin, we can't
 185          * write to stdout; the db library doesn't let you
 186          * write to a file stream like that.
 187          */
 188         if (!strcmp(infile, "-")) {
 189                 ifp = stdin;
 190         } else {
 191                 if ((ifp = fopen(infile, "r")) == NULL)
 192                         err(1, "failed to open %s", infile);
 193         }
 194
 195         if ((dbp = open_db(map, O_RDWR|O_EXLOCK|O_EXCL|O_CREAT)) == NULL)
 196                 err(1, "open_db(%s) failed", map);
 197
 198         if (interdom) {
 199                 key.data = "YP_INTERDOMAIN";
 200                 key.size = sizeof("YP_INTERDOMAIN") - 1;
 201                 data.data = "";
 202                 data.size = 0;
 203                 yp_put_record(dbp, &key, &data, 0);
 204         }
 205
 206         if (secure) {
 207                 key.data = "YP_SECURE";
 208                 key.size = sizeof("YP_SECURE") - 1;
 209                 data.data = "";
 210                 data.size = 0;
 211                 yp_put_record(dbp, &key, &data, 0);
 212         }
 213
 214         key.data = "YP_MASTER_NAME";
 215         key.size = sizeof("YP_MASTER_NAME") - 1;
 216         data.data = mastername;
 217         data.size = strlen(mastername);
 218         yp_put_record(dbp, &key, &data, 0);
 219
 220         key.data = "YP_LAST_MODIFIED";
 221         key.size = sizeof("YP_LAST_MODIFIED") - 1;
 222         snprintf(buf, sizeof(buf), "%jd", (intmax_t)time(NULL));
 223         data.data = (char *)&buf;
 224         data.size = strlen(buf);
 225         yp_put_record(dbp, &key, &data, 0);
 226
 227         if (infilename) {
 228                 key.data = "YP_INPUT_FILE";
 229                 key.size = sizeof("YP_INPUT_FILE") - 1;
 230                 data.data = infilename;
 231                 data.size = strlen(infilename);
 232                 yp_put_record(dbp, &key, &data, 0);
 233         }
 234
 235         if (outfilename) {
 236                 key.data = "YP_OUTPUT_FILE";
 237                 key.size = sizeof("YP_OUTPUT_FILE") - 1;
 238                 data.data = outfilename;
 239                 data.size = strlen(outfilename);
 240                 yp_put_record(dbp, &key, &data, 0);
 241         }
 242
 243         if (domain) {
 244                 key.data = "YP_DOMAIN_NAME";
 245                 key.size = sizeof("YP_DOMAIN_NAME") - 1;
 246                 data.data = domain;
 247                 data.size = strlen(domain);
 248                 yp_put_record(dbp, &key, &data, 0);
 249         }
 250
 251         while (fgets((char *)&buf, sizeof(buf), ifp)) {
 252                 char *sep = NULL;
 253                 int rval;
 254
 255                 /* NUL terminate */
 256                 if ((sep = strchr(buf, '\n')))
 257                         *sep = '\0';
 258
 259                 /* handle backslash line continuations */
 260                 while (buf[strlen(buf) - 1] == '\\') {
 261                         fgets((char *)&buf[strlen(buf) - 1],
 262                                         sizeof(buf) - strlen(buf), ifp);
 263                         if ((sep = strchr(buf, '\n')))
 264                                 *sep = '\0';
 265                 }
 266
 267                 /* find the separation between the key and data */
 268                 if ((sep = strpbrk(buf, " \t")) == NULL) {
 269                         warnx("bad input -- no white space: %s", buf);
 270                         continue;
 271                 }
 272
 273                 /* separate the strings */
 274                 keybuf = (char *)&buf;
 275                 datbuf = sep + 1;
 276                 *sep = '\0';
 277
 278                 /* set datbuf to start at first non-whitespace character */
 279                 while (*datbuf == ' ' || *datbuf == '\t')
 280                         datbuf++;
 281
 282                 /* Check for silliness. */
 283                 if (filter_plusminus) {
 284                         if  (*keybuf == '+' || *keybuf == '-' ||
 285                              *datbuf == '+' || *datbuf == '-') {
 286                                 warnx("bad character at "
 287                                     "start of line: %s", buf);
 288                                 continue;
 289                         }
 290                 }
 291
 292                 if (strlen(keybuf) > YPMAXRECORD) {
 293                         warnx("key too long: %s", keybuf);
 294                         continue;
 295                 }
 296
 297                 if (!strlen(keybuf)) {
 298                         warnx("no key -- check source file for blank lines");
 299                         continue;
 300                 }
 301
 302                 if (strlen(datbuf) > YPMAXRECORD) {
 303                         warnx("data too long: %s", datbuf);
 304                         continue;
 305                 }
 306
 307                 key.data = keybuf;
 308                 key.size = strlen(keybuf);
 309                 data.data = datbuf;
 310                 data.size = strlen(datbuf);
 311
 312                 if ((rval = yp_put_record(dbp, &key, &data, 0)) != YP_TRUE) {
 313                         switch (rval) {
 314                         case YP_FALSE:
 315                                 warnx("duplicate key '%s' - skipping", keybuf);
 316                                 break;
 317                         case YP_BADDB:
 318                         default:
 319                                 err(1,"failed to write new record - exiting");
 320                                 break;
 321                         }
 322                 }
 323
 324         }
 325
 326         (void)(dbp->close)(dbp);
 327
 328 doclear:
 329         if (clear) {
 330                 char in = 0;
 331                 char *out = NULL;
 332                 int stat;
 333                 if ((stat = callrpc("localhost", YPPROG,YPVERS, YPPROC_CLEAR,
 334                         (xdrproc_t)xdr_void, &in,
 335                         (xdrproc_t)xdr_void, out)) != RPC_SUCCESS) {
 336                         warnx("failed to send 'clear' to local ypserv: %s",
 337                                 clnt_sperrno((enum clnt_stat) stat));
 338                 }
 339         }
 340
 341         exit(0);
 342 }