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  * $FreeBSD: src/usr.sbin/yp_mkdb/yp_mkdb.c,v 1.12.2.1 2002/02/15 00:46:59 des Exp $
  33  * $DragonFly: src/usr.sbin/yp_mkdb/yp_mkdb.c,v 1.3 2004/12/18 22:48:14 swildner Exp $
  34  */
  35
  36 #include <err.h>
  37 #include <fcntl.h>
  38 #include <limits.h>
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <string.h>
  42 #include <time.h>
  43 #include <unistd.h>
  44 #include <rpc/rpc.h>
  45 #include <rpcsvc/yp.h>
  46 #include <sys/param.h>
  47 #include <sys/types.h>
  48 #include <sys/stat.h>
  49 #include "yp_extern.h"
  50 #include "ypxfr_extern.h"
  51
  52 char *yp_dir = "";      /* No particular default needed. */
  53 int _rpcpmstart = 0;
  54 int debug = 1;
  55
  56 static void usage()
  57 {
  58         fprintf(stderr, "%s\n%s\n%s\n%s\n",
  59         "usage: yp_mkdb -c",
  60         "       yp_mkdb -u dbname",
  61         "       yp_mkdb [-c] [-b] [-s] [-f] [-i inputfile] [-o outputfile]",
  62         "               [-d domainname ] [-m mastername] inputfile dbname");
  63         exit(1);
  64 }
  65
  66 #define PERM_SECURE (S_IRUSR|S_IWUSR)
  67
  68 static DB *open_db(path, flags)
  69         char *path;
  70         int flags;
  71 {
  72         extern HASHINFO openinfo;
  73
  74         return(dbopen(path, flags, PERM_SECURE, DB_HASH, &openinfo));
  75 }
  76
  77 static void unwind(map)
  78         char *map;
  79 {
  80         DB *dbp;
  81         DBT key, data;
  82
  83         dbp = open_db(map, O_RDONLY);
  84
  85         if (dbp == NULL)
  86                 err(1, "open_db(%s) failed", map);
  87
  88         key.data = NULL;
  89         while (yp_next_record(dbp, &key, &data, 1, 1) == YP_TRUE)
  90                 printf("%.*s %.*s\n", key.size,key.data,data.size,data.data);
  91
  92         dbp->close(dbp);
  93         return;
  94 }
  95
  96 int main (argc, argv)
  97         int argc;
  98         char *argv[];
  99 {
 100         int ch;
 101         int un = 0;
 102         int clear = 0;
 103         int filter_plusminus = 0;
 104         char *infile = NULL;
 105         char *map = NULL;
 106         char *domain = NULL;
 107         char *infilename = NULL;
 108         char *outfilename = NULL;
 109         char *mastername = NULL;
 110         int interdom = 0;
 111         int secure = 0;
 112         DB *dbp;
 113         DBT key, data;
 114         char buf[10240];
 115         char *keybuf, *datbuf;
 116         FILE *ifp;
 117         char hname[MAXHOSTNAMELEN + 2];
 118
 119         while ((ch = getopt(argc, argv, "uhcbsfd:i:o:m:")) != -1) {
 120                 switch (ch) {
 121                 case 'f':
 122                         filter_plusminus++;
 123                         break;
 124                 case 'u':
 125                         un++;
 126                         break;
 127                 case 'c':
 128                         clear++;
 129                         break;
 130                 case 'b':
 131                         interdom++;
 132                         break;
 133                 case 's':
 134                         secure++;
 135                         break;
 136                 case 'd':
 137                         domain = optarg;
 138                         break;
 139                 case 'i':
 140                         infilename = optarg;
 141                         break;
 142                 case 'o':
 143                         outfilename = optarg;
 144                         break;
 145                 case 'm':
 146                         mastername = optarg;
 147                         break;
 148                 case 'h':
 149                 default:
 150                         usage();
 151                         break;
 152                 }
 153         }
 154
 155         argc -= optind;
 156         argv += optind;
 157
 158         if (un) {
 159                 map = argv[0];
 160                 if (map == NULL)
 161                         usage();
 162                 unwind(map);
 163                 exit(0);
 164
 165         }
 166
 167         infile = argv[0];
 168         map = argv[1];
 169
 170         if (infile == NULL || map == NULL) {
 171                 if (clear)
 172                         goto doclear;
 173                 usage();
 174         }
 175
 176         if (mastername == NULL) {
 177                 if (gethostname((char *)&hname, sizeof(hname)) == -1)
 178                         err(1, "gethostname() failed");
 179                 mastername = (char *)&hname;
 180         }
 181
 182         /*
 183          * Note that while we can read from stdin, we can't
 184          * write to stdout; the db library doesn't let you
 185          * write to a file stream like that.
 186          */
 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), "%lu", 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         dbp->close(dbp);
 327
 328 doclear:
 329
 330         if (clear) {
 331                 char in = 0;
 332                 char *out = NULL;
 333                 int stat;
 334                 if ((stat = callrpc("localhost",YPPROG,YPVERS,YPPROC_CLEAR,
 335                         xdr_void, (void *)&in,
 336                         xdr_void, (void *)out)) != RPC_SUCCESS) {
 337                         warnx("failed to send 'clear' to local ypserv: %s",
 338                                 clnt_sperrno((enum clnt_stat) stat));
 339                 }
 340         }
 341
 342         exit(0);
 343 }