usr.sbin/yp_mkdb/yp_mkdb.c

   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
  33 #include <sys/cdefs.h>
  34 __FBSDID("$FreeBSD$");
  35
  36 #include <err.h>
  37 #include <fcntl.h>
  38 #include <limits.h>
  39 #include <stdint.h>
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42 #include <string.h>
  43 #include <time.h>
  44 #include <unistd.h>
  45 #include <rpc/rpc.h>
  46 #include <rpcsvc/yp.h>
  47 #include <sys/param.h>
  48 #include <sys/types.h>
  49 #include <sys/stat.h>
  50 #include "yp_extern.h"
  51 #include "ypxfr_extern.h"
  52
  53 char *yp_dir = "";      /* No particular default needed. */
  54 int _rpcpmstart = 0;
  55 int debug = 1;
  56
  57 static void
  58 usage(void)
  59 {
  60         fprintf(stderr, "%s\n%s\n%s\n%s\n",
  61         "usage: yp_mkdb -c",
  62         "       yp_mkdb -u dbname",
  63         "       yp_mkdb [-c] [-b] [-s] [-f] [-i inputfile] [-o outputfile]",
  64         "               [-d domainname ] [-m mastername] inputfile dbname");
  65         exit(1);
  66 }
  67
  68 #define PERM_SECURE (S_IRUSR|S_IWUSR)
  69
  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
 189         if (!strcmp(infile, "-")) {
 190                 ifp = stdin;
 191         } else {
 192                 if ((ifp = fopen(infile, "r")) == NULL)
 193                         err(1, "failed to open %s", infile);
 194         }
 195
 196         if ((dbp = open_db(map, O_RDWR|O_EXLOCK|O_EXCL|O_CREAT)) == NULL)
 197                 err(1, "open_db(%s) failed", map);
 198
 199         if (interdom) {
 200                 key.data = "YP_INTERDOMAIN";
 201                 key.size = sizeof("YP_INTERDOMAIN") - 1;
 202                 data.data = "";
 203                 data.size = 0;
 204                 yp_put_record(dbp, &key, &data, 0);
 205         }
 206
 207         if (secure) {
 208                 key.data = "YP_SECURE";
 209                 key.size = sizeof("YP_SECURE") - 1;
 210                 data.data = "";
 211                 data.size = 0;
 212                 yp_put_record(dbp, &key, &data, 0);
 213         }
 214
 215         key.data = "YP_MASTER_NAME";
 216         key.size = sizeof("YP_MASTER_NAME") - 1;
 217         data.data = mastername;
 218         data.size = strlen(mastername);
 219         yp_put_record(dbp, &key, &data, 0);
 220
 221         key.data = "YP_LAST_MODIFIED";
 222         key.size = sizeof("YP_LAST_MODIFIED") - 1;
 223         snprintf(buf, sizeof(buf), "%jd", (intmax_t)time(NULL));
 224         data.data = (char *)&buf;
 225         data.size = strlen(buf);
 226         yp_put_record(dbp, &key, &data, 0);
 227
 228         if (infilename) {
 229                 key.data = "YP_INPUT_FILE";
 230                 key.size = sizeof("YP_INPUT_FILE") - 1;
 231                 data.data = infilename;
 232                 data.size = strlen(infilename);
 233                 yp_put_record(dbp, &key, &data, 0);
 234         }
 235
 236         if (outfilename) {
 237                 key.data = "YP_OUTPUT_FILE";
 238                 key.size = sizeof("YP_OUTPUT_FILE") - 1;
 239                 data.data = outfilename;
 240                 data.size = strlen(outfilename);
 241                 yp_put_record(dbp, &key, &data, 0);
 242         }
 243
 244         if (domain) {
 245                 key.data = "YP_DOMAIN_NAME";
 246                 key.size = sizeof("YP_DOMAIN_NAME") - 1;
 247                 data.data = domain;
 248                 data.size = strlen(domain);
 249                 yp_put_record(dbp, &key, &data, 0);
 250         }
 251
 252         while (fgets((char *)&buf, sizeof(buf), ifp)) {
 253                 char *sep = NULL;
 254                 int rval;
 255
 256                 /* NUL terminate */
 257                 if ((sep = strchr(buf, '\n')))
 258                         *sep = '\0';
 259
 260                 /* handle backslash line continuations */
 261                 while (buf[strlen(buf) - 1] == '\\') {
 262                         fgets((char *)&buf[strlen(buf) - 1],
 263                                         sizeof(buf) - strlen(buf), ifp);
 264                         if ((sep = strchr(buf, '\n')))
 265                                 *sep = '\0';
 266                 }
 267
 268                 /* find the separation between the key and data */
 269                 if ((sep = strpbrk(buf, " \t")) == NULL) {
 270                         warnx("bad input -- no white space: %s", buf);
 271                         continue;
 272                 }
 273
 274                 /* separate the strings */
 275                 keybuf = (char *)&buf;
 276                 datbuf = sep + 1;
 277                 *sep = '\0';
 278
 279                 /* set datbuf to start at first non-whitespace character */
 280                 while (*datbuf == ' ' || *datbuf == '\t')
 281                         datbuf++;
 282
 283                 /* Check for silliness. */
 284                 if (filter_plusminus) {
 285                         if  (*keybuf == '+' || *keybuf == '-' ||
 286                              *datbuf == '+' || *datbuf == '-') {
 287                                 warnx("bad character at "
 288                                     "start of line: %s", buf);
 289                                 continue;
 290                         }
 291                 }
 292
 293                 if (strlen(keybuf) > YPMAXRECORD) {
 294                         warnx("key too long: %s", keybuf);
 295                         continue;
 296                 }
 297
 298                 if (!strlen(keybuf)) {
 299                         warnx("no key -- check source file for blank lines");
 300                         continue;
 301                 }
 302
 303                 if (strlen(datbuf) > YPMAXRECORD) {
 304                         warnx("data too long: %s", datbuf);
 305                         continue;
 306                 }
 307
 308                 key.data = keybuf;
 309                 key.size = strlen(keybuf);
 310                 data.data = datbuf;
 311                 data.size = strlen(datbuf);
 312
 313                 if ((rval = yp_put_record(dbp, &key, &data, 0)) != YP_TRUE) {
 314                         switch (rval) {
 315                         case YP_FALSE:
 316                                 warnx("duplicate key '%s' - skipping", keybuf);
 317                                 break;
 318                         case YP_BADDB:
 319                         default:
 320                                 err(1,"failed to write new record - exiting");
 321                                 break;
 322                         }
 323                 }
 324
 325         }
 326
 327         (void)(dbp->close)(dbp);
 328
 329 doclear:
 330
 331         if (clear) {
 332                 char in = 0;
 333                 char *out = NULL;
 334                 int stat;
 335                 if ((stat = callrpc("localhost", YPPROG,YPVERS, YPPROC_CLEAR,
 336                         (xdrproc_t)xdr_void, &in,
 337                         (xdrproc_t)xdr_void, out)) != RPC_SUCCESS) {
 338                         warnx("failed to send 'clear' to local ypserv: %s",
 339                                 clnt_sperrno((enum clnt_stat) stat));
 340                 }
 341         }
 342
 343         exit(0);
 344 }