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