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 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, key.data, (int)data.size,
  90                     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         if (!strcmp(infile, "-")) {
 187                 ifp = stdin;
 188         } else {
 189                 if ((ifp = fopen(infile, "r")) == NULL)
 190                         err(1, "failed to open %s", infile);
 191         }
 192
 193         if ((dbp = open_db(map, O_RDWR|O_EXLOCK|O_EXCL|O_CREAT)) == NULL)
 194                 err(1, "open_db(%s) failed", map);
 195
 196         if (interdom) {
 197                 key.data = "YP_INTERDOMAIN";
 198                 key.size = sizeof("YP_INTERDOMAIN") - 1;
 199                 data.data = "";
 200                 data.size = 0;
 201                 yp_put_record(dbp, &key, &data, 0);
 202         }
 203
 204         if (secure) {
 205                 key.data = "YP_SECURE";
 206                 key.size = sizeof("YP_SECURE") - 1;
 207                 data.data = "";
 208                 data.size = 0;
 209                 yp_put_record(dbp, &key, &data, 0);
 210         }
 211
 212         key.data = "YP_MASTER_NAME";
 213         key.size = sizeof("YP_MASTER_NAME") - 1;
 214         data.data = mastername;
 215         data.size = strlen(mastername);
 216         yp_put_record(dbp, &key, &data, 0);
 217
 218         key.data = "YP_LAST_MODIFIED";
 219         key.size = sizeof("YP_LAST_MODIFIED") - 1;
 220         snprintf(buf, sizeof(buf), "%jd", (intmax_t)time(NULL));
 221         data.data = (char *)&buf;
 222         data.size = strlen(buf);
 223         yp_put_record(dbp, &key, &data, 0);
 224
 225         if (infilename) {
 226                 key.data = "YP_INPUT_FILE";
 227                 key.size = sizeof("YP_INPUT_FILE") - 1;
 228                 data.data = infilename;
 229                 data.size = strlen(infilename);
 230                 yp_put_record(dbp, &key, &data, 0);
 231         }
 232
 233         if (outfilename) {
 234                 key.data = "YP_OUTPUT_FILE";
 235                 key.size = sizeof("YP_OUTPUT_FILE") - 1;
 236                 data.data = outfilename;
 237                 data.size = strlen(outfilename);
 238                 yp_put_record(dbp, &key, &data, 0);
 239         }
 240
 241         if (domain) {
 242                 key.data = "YP_DOMAIN_NAME";
 243                 key.size = sizeof("YP_DOMAIN_NAME") - 1;
 244                 data.data = domain;
 245                 data.size = strlen(domain);
 246                 yp_put_record(dbp, &key, &data, 0);
 247         }
 248
 249         while (fgets((char *)&buf, sizeof(buf), ifp)) {
 250                 char *sep = NULL;
 251                 int rval;
 252
 253                 /* NUL terminate */
 254                 if ((sep = strchr(buf, '\n')))
 255                         *sep = '\0';
 256
 257                 /* handle backslash line continuations */
 258                 while (buf[strlen(buf) - 1] == '\\') {
 259                         fgets((char *)&buf[strlen(buf) - 1],
 260                                         sizeof(buf) - strlen(buf), ifp);
 261                         if ((sep = strchr(buf, '\n')))
 262                                 *sep = '\0';
 263                 }
 264
 265                 /* find the separation between the key and data */
 266                 if ((sep = strpbrk(buf, " \t")) == NULL) {
 267                         warnx("bad input -- no white space: %s", buf);
 268                         continue;
 269                 }
 270
 271                 /* separate the strings */
 272                 keybuf = (char *)&buf;
 273                 datbuf = sep + 1;
 274                 *sep = '\0';
 275
 276                 /* set datbuf to start at first non-whitespace character */
 277                 while (*datbuf == ' ' || *datbuf == '\t')
 278                         datbuf++;
 279
 280                 /* Check for silliness. */
 281                 if (filter_plusminus) {
 282                         if  (*keybuf == '+' || *keybuf == '-' ||
 283                              *datbuf == '+' || *datbuf == '-') {
 284                                 warnx("bad character at "
 285                                     "start of line: %s", buf);
 286                                 continue;
 287                         }
 288                 }
 289
 290                 if (strlen(keybuf) > YPMAXRECORD) {
 291                         warnx("key too long: %s", keybuf);
 292                         continue;
 293                 }
 294
 295                 if (!strlen(keybuf)) {
 296                         warnx("no key -- check source file for blank lines");
 297                         continue;
 298                 }
 299
 300                 if (strlen(datbuf) > YPMAXRECORD) {
 301                         warnx("data too long: %s", datbuf);
 302                         continue;
 303                 }
 304
 305                 key.data = keybuf;
 306                 key.size = strlen(keybuf);
 307                 data.data = datbuf;
 308                 data.size = strlen(datbuf);
 309
 310                 if ((rval = yp_put_record(dbp, &key, &data, 0)) != YP_TRUE) {
 311                         switch (rval) {
 312                         case YP_FALSE:
 313                                 warnx("duplicate key '%s' - skipping", keybuf);
 314                                 break;
 315                         case YP_BADDB:
 316                         default:
 317                                 err(1,"failed to write new record - exiting");
 318                                 break;
 319                         }
 320                 }
 321
 322         }
 323
 324         (void)(dbp->close)(dbp);
 325
 326 doclear:
 327         if (clear) {
 328                 char in = 0;
 329                 char *out = NULL;
 330                 int stat;
 331                 if ((stat = callrpc("localhost", YPPROG,YPVERS, YPPROC_CLEAR,
 332                         (xdrproc_t)xdr_void, &in,
 333                         (xdrproc_t)xdr_void, out)) != RPC_SUCCESS) {
 334                         warnx("failed to send 'clear' to local ypserv: %s",
 335                                 clnt_sperrno((enum clnt_stat) stat));
 336                 }
 337         }
 338
 339         exit(0);
 340 }