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 #ifndef lint
  34 static const char rcsid[] =
  35   "$FreeBSD: src/usr.sbin/yp_mkdb/yp_mkdb.c,v 1.12.2.1 2002/02/15 00:46:59 des Exp $";
  36 #endif /* not lint */
  37
  38 #include <err.h>
  39 #include <fcntl.h>
  40 #include <limits.h>
  41 #include <stdio.h>
  42 #include <stdlib.h>
  43 #include <string.h>
  44 #include <time.h>
  45 #include <unistd.h>
  46 #include <rpc/rpc.h>
  47 #include <rpcsvc/yp.h>
  48 #include <sys/param.h>
  49 #include <sys/types.h>
  50 #include <sys/stat.h>
  51 #include "yp_extern.h"
  52 #include "ypxfr_extern.h"
  53
  54 char *yp_dir = "";      /* No particular default needed. */
  55 int _rpcpmstart = 0;
  56 int debug = 1;
  57
  58 static void usage()
  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 *open_db(path, flags)
  71         char *path;
  72         int flags;
  73 {
  74         extern HASHINFO openinfo;
  75
  76         return(dbopen(path, flags, PERM_SECURE, DB_HASH, &openinfo));
  77 }
  78
  79 static void unwind(map)
  80         char *map;
  81 {
  82         DB *dbp;
  83         DBT key, data;
  84
  85         dbp = open_db(map, O_RDONLY);
  86
  87         if (dbp == NULL)
  88                 err(1, "open_db(%s) failed", map);
  89
  90         key.data = NULL;
  91         while (yp_next_record(dbp, &key, &data, 1, 1) == YP_TRUE)
  92                 printf("%.*s %.*s\n", key.size,key.data,data.size,data.data);
  93
  94         (void)(dbp->close)(dbp);
  95         return;
  96 }
  97
  98 int main (argc, argv)
  99         int argc;
 100         char *argv[];
 101 {
 102         int ch;
 103         int un = 0;
 104         int clear = 0;
 105         int filter_plusminus = 0;
 106         char *infile = NULL;
 107         char *map = NULL;
 108         char *domain = NULL;
 109         char *infilename = NULL;
 110         char *outfilename = NULL;
 111         char *mastername = NULL;
 112         int interdom = 0;
 113         int secure = 0;
 114         DB *dbp;
 115         DBT key, data;
 116         char buf[10240];
 117         char *keybuf, *datbuf;
 118         FILE *ifp;
 119         char hname[MAXHOSTNAMELEN + 2];
 120
 121         while ((ch = getopt(argc, argv, "uhcbsfd:i:o:m:")) != -1) {
 122                 switch (ch) {
 123                 case 'f':
 124                         filter_plusminus++;
 125                         break;
 126                 case 'u':
 127                         un++;
 128                         break;
 129                 case 'c':
 130                         clear++;
 131                         break;
 132                 case 'b':
 133                         interdom++;
 134                         break;
 135                 case 's':
 136                         secure++;
 137                         break;
 138                 case 'd':
 139                         domain = optarg;
 140                         break;
 141                 case 'i':
 142                         infilename = optarg;
 143                         break;
 144                 case 'o':
 145                         outfilename = optarg;
 146                         break;
 147                 case 'm':
 148                         mastername = optarg;
 149                         break;
 150                 case 'h':
 151                 default:
 152                         usage();
 153                         break;
 154                 }
 155         }
 156
 157         argc -= optind;
 158         argv += optind;
 159
 160         if (un) {
 161                 map = argv[0];
 162                 if (map == NULL)
 163                         usage();
 164                 unwind(map);
 165                 exit(0);
 166
 167         }
 168
 169         infile = argv[0];
 170         map = argv[1];
 171
 172         if (infile == NULL || map == NULL) {
 173                 if (clear)
 174                         goto doclear;
 175                 usage();
 176         }
 177
 178         if (mastername == NULL) {
 179                 if (gethostname((char *)&hname, sizeof(hname)) == -1)
 180                         err(1, "gethostname() failed");
 181                 mastername = (char *)&hname;
 182         }
 183
 184         /*
 185          * Note that while we can read from stdin, we can't
 186          * write to stdout; the db library doesn't let you
 187          * write to a file stream like that.
 188          */
 189
 190         if (!strcmp(infile, "-")) {
 191                 ifp = stdin;
 192         } else {
 193                 if ((ifp = fopen(infile, "r")) == NULL)
 194                         err(1, "failed to open %s", infile);
 195         }
 196
 197         if ((dbp = open_db(map, O_RDWR|O_EXLOCK|O_EXCL|O_CREAT)) == NULL)
 198                 err(1, "open_db(%s) failed", map);
 199
 200         if (interdom) {
 201                 key.data = "YP_INTERDOMAIN";
 202                 key.size = sizeof("YP_INTERDOMAIN") - 1;
 203                 data.data = "";
 204                 data.size = 0;
 205                 yp_put_record(dbp, &key, &data, 0);
 206         }
 207
 208         if (secure) {
 209                 key.data = "YP_SECURE";
 210                 key.size = sizeof("YP_SECURE") - 1;
 211                 data.data = "";
 212                 data.size = 0;
 213                 yp_put_record(dbp, &key, &data, 0);
 214         }
 215
 216         key.data = "YP_MASTER_NAME";
 217         key.size = sizeof("YP_MASTER_NAME") - 1;
 218         data.data = mastername;
 219         data.size = strlen(mastername);
 220         yp_put_record(dbp, &key, &data, 0);
 221
 222         key.data = "YP_LAST_MODIFIED";
 223         key.size = sizeof("YP_LAST_MODIFIED") - 1;
 224         snprintf(buf, sizeof(buf), "%lu", time(NULL));
 225         data.data = (char *)&buf;
 226         data.size = strlen(buf);
 227         yp_put_record(dbp, &key, &data, 0);
 228
 229         if (infilename) {
 230                 key.data = "YP_INPUT_FILE";
 231                 key.size = sizeof("YP_INPUT_FILE") - 1;
 232                 data.data = infilename;
 233                 data.size = strlen(infilename);
 234                 yp_put_record(dbp, &key, &data, 0);
 235         }
 236
 237         if (outfilename) {
 238                 key.data = "YP_OUTPUT_FILE";
 239                 key.size = sizeof("YP_OUTPUT_FILE") - 1;
 240                 data.data = outfilename;
 241                 data.size = strlen(outfilename);
 242                 yp_put_record(dbp, &key, &data, 0);
 243         }
 244
 245         if (domain) {
 246                 key.data = "YP_DOMAIN_NAME";
 247                 key.size = sizeof("YP_DOMAIN_NAME") - 1;
 248                 data.data = domain;
 249                 data.size = strlen(domain);
 250                 yp_put_record(dbp, &key, &data, 0);
 251         }
 252
 253         while (fgets((char *)&buf, sizeof(buf), ifp)) {
 254                 char *sep = NULL;
 255                 int rval;
 256
 257                 /* NUL terminate */
 258                 if ((sep = strchr(buf, '\n')))
 259                         *sep = '\0';
 260
 261                 /* handle backslash line continuations */
 262                 while (buf[strlen(buf) - 1] == '\\') {
 263                         fgets((char *)&buf[strlen(buf) - 1],
 264                                         sizeof(buf) - strlen(buf), ifp);
 265                         if ((sep = strchr(buf, '\n')))
 266                                 *sep = '\0';
 267                 }
 268
 269                 /* find the separation between the key and data */
 270                 if ((sep = strpbrk(buf, " \t")) == NULL) {
 271                         warnx("bad input -- no white space: %s", buf);
 272                         continue;
 273                 }
 274
 275                 /* separate the strings */
 276                 keybuf = (char *)&buf;
 277                 datbuf = sep + 1;
 278                 *sep = '\0';
 279
 280                 /* set datbuf to start at first non-whitespace character */
 281                 while (*datbuf == ' ' || *datbuf == '\t')
 282                         datbuf++;
 283
 284                 /* Check for silliness. */
 285                 if (filter_plusminus) {
 286                         if  (*keybuf == '+' || *keybuf == '-' ||
 287                              *datbuf == '+' || *datbuf == '-') {
 288                                 warnx("bad character at "
 289                                     "start of line: %s", buf);
 290                                 continue;
 291                         }
 292                 }
 293
 294                 if (strlen(keybuf) > YPMAXRECORD) {
 295                         warnx("key too long: %s", keybuf);
 296                         continue;
 297                 }
 298
 299                 if (!strlen(keybuf)) {
 300                         warnx("no key -- check source file for blank lines");
 301                         continue;
 302                 }
 303
 304                 if (strlen(datbuf) > YPMAXRECORD) {
 305                         warnx("data too long: %s", datbuf);
 306                         continue;
 307                 }
 308
 309                 key.data = keybuf;
 310                 key.size = strlen(keybuf);
 311                 data.data = datbuf;
 312                 data.size = strlen(datbuf);
 313
 314                 if ((rval = yp_put_record(dbp, &key, &data, 0)) != YP_TRUE) {
 315                         switch (rval) {
 316                         case YP_FALSE:
 317                                 warnx("duplicate key '%s' - skipping", keybuf);
 318                                 break;
 319                         case YP_BADDB:
 320                         default:
 321                                 err(1,"failed to write new record - exiting");
 322                                 break;
 323                         }
 324                 }
 325
 326         }
 327
 328         (void)(dbp->close)(dbp);
 329
 330 doclear:
 331
 332         if (clear) {
 333                 char in = 0;
 334                 char *out = NULL;
 335                 int stat;
 336                 if ((stat = callrpc("localhost",YPPROG,YPVERS,YPPROC_CLEAR,
 337                         xdr_void, (void *)&in,
 338                         xdr_void, (void *)out)) != RPC_SUCCESS) {
 339                         warnx("failed to send 'clear' to local ypserv: %s",
 340                                 clnt_sperrno((enum clnt_stat) stat));
 341                 }
 342         }
 343
 344         exit(0);
 345 }