usr.bin/ypmatch/ypmatch.c

   1 /*
   2  * Copyright (c) 1992/3 Theo de Raadt <deraadt@fsa.ca>
   3  * 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. The name of the author may not be used to endorse or promote
  14  *    products derived from this software without specific prior written
  15  *    permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
  18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #include <sys/cdefs.h>
  31
  32 __FBSDID("$FreeBSD$");
  33
  34 #include <sys/param.h>
  35 #include <sys/types.h>
  36 #include <sys/socket.h>
  37
  38 #include <rpc/rpc.h>
  39 #include <rpc/xdr.h>
  40 #include <rpcsvc/yp_prot.h>
  41 #include <rpcsvc/ypclnt.h>
  42
  43 #include <ctype.h>
  44 #include <err.h>
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47 #include <string.h>
  48 #include <unistd.h>
  49
  50 struct ypalias {
  51         char *alias, *name;
  52 } ypaliases[] = {
  53         { "passwd", "passwd.byname" },
  54         { "master.passwd", "master.passwd.byname" },
  55         { "group", "group.byname" },
  56         { "networks", "networks.byaddr" },
  57         { "hosts", "hosts.byname" },
  58         { "protocols", "protocols.bynumber" },
  59         { "services", "services.byname" },
  60         { "aliases", "mail.aliases" },
  61         { "ethers", "ethers.byname" },
  62 };
  63
  64 static void
  65 usage(void)
  66 {
  67         fprintf(stderr, "%s\n%s\n",
  68                 "usage: ypmatch [-kt] [-d domainname] key ... mapname",
  69                 "       ypmatch -x");
  70         exit(1);
  71 }
  72
  73 int
  74 main(int argc, char *argv[])
  75 {
  76         char *domainname = NULL;
  77         char *inkey, *inmap, *outbuf;
  78         int outbuflen, key, notrans;
  79         int c, r;
  80         u_int i;
  81
  82         notrans = key = 0;
  83
  84         while ((c = getopt(argc, argv, "xd:kt")) != -1)
  85                 switch (c) {
  86                 case 'x':
  87                         for (i = 0; i<sizeof ypaliases/sizeof ypaliases[0]; i++)
  88                                 printf("Use \"%s\" for \"%s\"\n",
  89                                         ypaliases[i].alias,
  90                                         ypaliases[i].name);
  91                         exit(0);
  92                 case 'd':
  93                         domainname = optarg;
  94                         break;
  95                 case 't':
  96                         notrans++;
  97                         break;
  98                 case 'k':
  99                         key++;
 100                         break;
 101                 default:
 102                         usage();
 103                 }
 104
 105         if ((argc-optind) < 2)
 106                 usage();
 107
 108         if (!domainname)
 109                 yp_get_default_domain(&domainname);
 110
 111         inmap = argv[argc-1];
 112         for (i = 0; (!notrans) && i<sizeof ypaliases/sizeof ypaliases[0]; i++)
 113                 if (strcmp(inmap, ypaliases[i].alias) == 0)
 114                         inmap = ypaliases[i].name;
 115         for (; optind < argc-1; optind++) {
 116                 inkey = argv[optind];
 117
 118                 r = yp_match(domainname, inmap, inkey,
 119                         strlen(inkey), &outbuf, &outbuflen);
 120                 switch (r) {
 121                 case 0:
 122                         if (key)
 123                                 printf("%s ", inkey);
 124                         printf("%*.*s\n", outbuflen, outbuflen, outbuf);
 125                         break;
 126                 case YPERR_YPBIND:
 127                         errx(1, "not running ypbind");
 128                 default:
 129                         errx(1, "can't match key %s in map %s. reason: %s",
 130                                 inkey, inmap, yperr_string(r));
 131                 }
 132         }
 133         exit(0);
 134 }