crypto/dist/heimdal/admin/copy.c

   1 /*
   2  * Copyright (c) 1997-2004 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("$Heimdal: copy.c 14260 2004-09-23 14:45:29Z joda $"
  37         "$NetBSD$");
  38
  39
  40 static krb5_boolean
  41 compare_keyblock(const krb5_keyblock *a, const krb5_keyblock *b)
  42 {
  43     if(a->keytype != b->keytype ||
  44        a->keyvalue.length != b->keyvalue.length ||
  45        memcmp(a->keyvalue.data, b->keyvalue.data, a->keyvalue.length) != 0)
  46         return FALSE;
  47     return TRUE;
  48 }
  49
  50 static int
  51 kt_copy_int (const char *from, const char *to)
  52 {
  53     krb5_error_code ret;
  54     krb5_keytab src_keytab, dst_keytab;
  55     krb5_kt_cursor cursor;
  56     krb5_keytab_entry entry, dummy;
  57
  58     ret = krb5_kt_resolve (context, from, &src_keytab);
  59     if (ret) {
  60         krb5_warn (context, ret, "resolving src keytab `%s'", from);
  61         return 1;
  62     }
  63
  64     ret = krb5_kt_resolve (context, to, &dst_keytab);
  65     if (ret) {
  66         krb5_kt_close (context, src_keytab);
  67         krb5_warn (context, ret, "resolving dst keytab `%s'", to);
  68         return 1;
  69     }
  70
  71     ret = krb5_kt_start_seq_get (context, src_keytab, &cursor);
  72     if (ret) {
  73         krb5_warn (context, ret, "krb5_kt_start_seq_get %s", keytab_string);
  74         goto out;
  75     }
  76
  77     if (verbose_flag)
  78         fprintf(stderr, "copying %s to %s\n", from, to);
  79
  80     while((ret = krb5_kt_next_entry(context, src_keytab,
  81                                     &entry, &cursor)) == 0) {
  82         char *name_str;
  83         char *etype_str;
  84         ret = krb5_unparse_name (context, entry.principal, &name_str);
  85         if(ret) {
  86             krb5_warn(context, ret, "krb5_unparse_name");
  87             name_str = NULL; /* XXX */
  88         }
  89         ret = krb5_enctype_to_string(context, entry.keyblock.keytype, &etype_str);
  90         if(ret) {
  91             krb5_warn(context, ret, "krb5_enctype_to_string");
  92             etype_str = NULL; /* XXX */
  93         }
  94         ret = krb5_kt_get_entry(context, dst_keytab,
  95                                 entry.principal,
  96                                 entry.vno,
  97                                 entry.keyblock.keytype,
  98                                 &dummy);
  99         if(ret == 0) {
 100             /* this entry is already in the new keytab, so no need to
 101                copy it; if the keyblocks are not the same, something
 102                is weird, so complain about that */
 103             if(!compare_keyblock(&entry.keyblock, &dummy.keyblock)) {
 104                 krb5_warnx(context, "entry with different keyvalue "
 105                            "already exists for %s, keytype %s, kvno %d",
 106                            name_str, etype_str, entry.vno);
 107             }
 108             krb5_kt_free_entry(context, &dummy);
 109             krb5_kt_free_entry (context, &entry);
 110             free(name_str);
 111             free(etype_str);
 112             continue;
 113         } else if(ret != KRB5_KT_NOTFOUND) {
 114             krb5_warn (context, ret, "%s: fetching %s/%s/%u",
 115                        to, name_str, etype_str, entry.vno);
 116             krb5_kt_free_entry (context, &entry);
 117             free(name_str);
 118             free(etype_str);
 119             break;
 120         }
 121         if (verbose_flag)
 122             fprintf (stderr, "copying %s, keytype %s, kvno %d\n", name_str,
 123                      etype_str, entry.vno);
 124         ret = krb5_kt_add_entry (context, dst_keytab, &entry);
 125         krb5_kt_free_entry (context, &entry);
 126         if (ret) {
 127             krb5_warn (context, ret, "%s: adding %s/%s/%u",
 128                        to, name_str, etype_str, entry.vno);
 129             free(name_str);
 130             free(etype_str);
 131             break;
 132         }
 133         free(name_str);
 134         free(etype_str);
 135     }
 136     krb5_kt_end_seq_get (context, src_keytab, &cursor);
 137
 138   out:
 139     krb5_kt_close (context, src_keytab);
 140     krb5_kt_close (context, dst_keytab);
 141     return ret != 0;
 142 }
 143
 144 int
 145 kt_copy (void *opt, int argc, char **argv)
 146 {
 147     return kt_copy_int(argv[0], argv[1]);
 148 }
 149
 150 int
 151 srvconv(struct srvconvert_options *opt, int argc, char **argv)
 152 {
 153     char kt4[1024], kt5[1024];
 154
 155     snprintf(kt4, sizeof(kt4), "krb4:%s", opt->srvtab_string);
 156
 157     if(keytab_string != NULL)
 158         return kt_copy_int(kt4, keytab_string);
 159
 160     krb5_kt_default_modify_name(context, kt5, sizeof(kt5));
 161     return kt_copy_int(kt4, kt5);
 162 }
 163
 164 int
 165 srvcreate(struct srvcreate_options *opt, int argc, char **argv)
 166 {
 167     char kt4[1024], kt5[1024];
 168
 169     snprintf(kt4, sizeof(kt4), "krb4:%s", opt->srvtab_string);
 170
 171     if(keytab_string != NULL)
 172         return kt_copy_int(keytab_string, kt4);
 173
 174     krb5_kt_default_name(context, kt5, sizeof(kt5));
 175     return kt_copy_int(kt5, kt4);
 176 }