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