crypto/heimdal-0.6.3/admin/copy.c

   1 /*
   2  * Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "ktutil_locl.h"
  35
  36 RCSID("$Id: copy.c,v 1.9 2003/01/16 18:59:03 lha Exp $");
  37
  38
  39 static krb5_boolean
  40 compare_keyblock(const krb5_keyblock *a, const krb5_keyblock *b)
  41 {
  42     if(a->keytype != b->keytype ||
  43        a->keyvalue.length != b->keyvalue.length ||
  44        memcmp(a->keyvalue.data, b->keyvalue.data, a->keyvalue.length) != 0)
  45         return FALSE;
  46     return TRUE;
  47 }
  48
  49 static int
  50 kt_copy_int (const char *from, const char *to)
  51 {
  52     krb5_error_code ret;
  53     krb5_keytab src_keytab, dst_keytab;
  54     krb5_kt_cursor cursor;
  55     krb5_keytab_entry entry, dummy;
  56
  57     ret = krb5_kt_resolve (context, from, &src_keytab);
  58     if (ret) {
  59         krb5_warn (context, ret, "resolving src keytab `%s'", from);
  60         return 1;
  61     }
  62
  63     ret = krb5_kt_resolve (context, to, &dst_keytab);
  64     if (ret) {
  65         krb5_kt_close (context, src_keytab);
  66         krb5_warn (context, ret, "resolving dst keytab `%s'", to);
  67         return 1;
  68     }
  69
  70     ret = krb5_kt_start_seq_get (context, src_keytab, &cursor);
  71     if (ret) {
  72         krb5_warn (context, ret, "krb5_kt_start_seq_get %s", keytab_string);
  73         goto out;
  74     }
  75
  76     if (verbose_flag)
  77         fprintf(stderr, "copying %s to %s\n", from, to);
  78
  79     while((ret = krb5_kt_next_entry(context, src_keytab,
  80                                     &entry, &cursor)) == 0) {
  81         char *name_str;
  82         char *etype_str;
  83         krb5_unparse_name (context, entry.principal, &name_str);
  84         krb5_enctype_to_string(context, entry.keyblock.keytype, &etype_str);
  85         ret = krb5_kt_get_entry(context, dst_keytab,
  86                                 entry.principal,
  87                                 entry.vno,
  88                                 entry.keyblock.keytype,
  89                                 &dummy);
  90         if(ret == 0) {
  91             /* this entry is already in the new keytab, so no need to
  92                copy it; if the keyblocks are not the same, something
  93                is weird, so complain about that */
  94             if(!compare_keyblock(&entry.keyblock, &dummy.keyblock)) {
  95                 krb5_warnx(context, "entry with different keyvalue "
  96                            "already exists for %s, keytype %s, kvno %d",
  97                            name_str, etype_str, entry.vno);
  98             }
  99             krb5_kt_free_entry(context, &dummy);
 100             krb5_kt_free_entry (context, &entry);
 101             free(name_str);
 102             free(etype_str);
 103             continue;
 104         } else if(ret != KRB5_KT_NOTFOUND) {
 105             krb5_warn(context, ret, "krb5_kt_get_entry(%s)", name_str);
 106             krb5_kt_free_entry (context, &entry);
 107             free(name_str);
 108             free(etype_str);
 109             break;
 110         }
 111         if (verbose_flag)
 112             fprintf (stderr, "copying %s, keytype %s, kvno %d\n", name_str,
 113                      etype_str, entry.vno);
 114         ret = krb5_kt_add_entry (context, dst_keytab, &entry);
 115         krb5_kt_free_entry (context, &entry);
 116         if (ret) {
 117             krb5_warn (context, ret, "krb5_kt_add_entry(%s)", name_str);
 118             free(name_str);
 119             free(etype_str);
 120             break;
 121         }
 122         free(name_str);
 123         free(etype_str);
 124     }
 125     krb5_kt_end_seq_get (context, src_keytab, &cursor);
 126
 127   out:
 128     krb5_kt_close (context, src_keytab);
 129     krb5_kt_close (context, dst_keytab);
 130     return 0;
 131 }
 132
 133 int
 134 kt_copy (int argc, char **argv)
 135 {
 136     int help_flag = 0;
 137     int optind = 0;
 138
 139     struct getargs args[] = {
 140         { "help", 'h', arg_flag, NULL}
 141     };
 142
 143     int num_args = sizeof(args) / sizeof(args[0]);
 144     int i = 0;
 145
 146     args[i++].value = &help_flag;
 147
 148     if(getarg(args, num_args, argc, argv, &optind)) {
 149         arg_printusage(args, num_args, "ktutil copy",
 150                        "keytab-src keytab-dest");
 151         return 1;
 152     }
 153     if (help_flag) {
 154         arg_printusage(args, num_args, "ktutil copy",
 155                        "keytab-src keytab-dest");
 156         return 1;
 157     }
 158
 159     argv += optind;
 160     argc -= optind;
 161
 162     if (argc != 2) {
 163         arg_printusage(args, num_args, "ktutil copy",
 164                        "keytab-src keytab-dest");
 165         return 1;
 166     }
 167
 168     return kt_copy_int(argv[0], argv[1]);
 169 }
 170
 171 #ifndef KEYFILE
 172 #define KEYFILE SYSCONFDIR "/srvtab"
 173 #endif
 174
 175 /* copy to from v4 srvtab, just short for copy */
 176 static int
 177 conv(int srvconv, int argc, char **argv)
 178 {
 179     int help_flag = 0;
 180     char *srvtab = KEYFILE;
 181     int optind = 0;
 182     char kt4[1024], kt5[1024];
 183
 184     char *name;
 185
 186     struct getargs args[] = {
 187         { "srvtab", 's', arg_string, NULL},
 188         { "help", 'h', arg_flag, NULL}
 189     };
 190
 191     int num_args = sizeof(args) / sizeof(args[0]);
 192     int i = 0;
 193
 194     args[i++].value = &srvtab;
 195     args[i++].value = &help_flag;
 196
 197     if(srvconv)
 198         name = "ktutil srvconvert";
 199     else
 200         name = "ktutil srvcreate";
 201
 202     if(getarg(args, num_args, argc, argv, &optind)){
 203         arg_printusage(args, num_args, name, "");
 204         return 1;
 205     }
 206     if(help_flag){
 207         arg_printusage(args, num_args, name, "");
 208         return 0;
 209     }
 210
 211     argc -= optind;
 212     argv += optind;
 213
 214     if (argc != 0) {
 215         arg_printusage(args, num_args, name, "");
 216         return 1;
 217     }
 218
 219     snprintf(kt4, sizeof(kt4), "krb4:%s", srvtab);
 220
 221     if(srvconv) {
 222         if(keytab_string != NULL)
 223             return kt_copy_int(kt4, keytab_string);
 224         else {
 225             krb5_kt_default_modify_name(context, kt5, sizeof(kt5));
 226             return kt_copy_int(kt4, kt5);
 227         }
 228     } else {
 229         if(keytab_string != NULL)
 230             return kt_copy_int(keytab_string, kt4);
 231
 232         krb5_kt_default_name(context, kt5, sizeof(kt5));
 233         return kt_copy_int(kt5, kt4);
 234     }
 235 }
 236
 237 int
 238 srvconv(int argc, char **argv)
 239 {
 240     return conv(1, argc, argv);
 241 }
 242
 243 int
 244 srvcreate(int argc, char **argv)
 245 {
 246     return conv(0, argc, argv);
 247 }