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("$Id$"); 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 int 50 kt_copy (void *opt, int argc, char **argv) 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 const char *from = argv[0]; 57 const char *to = argv[1]; 58 59 ret = krb5_kt_resolve (context, from, &src_keytab); 60 if (ret) { 61 krb5_warn (context, ret, "resolving src keytab `%s'", from); 62 return 1; 63 } 64 65 ret = krb5_kt_resolve (context, to, &dst_keytab); 66 if (ret) { 67 krb5_kt_close (context, src_keytab); 68 krb5_warn (context, ret, "resolving dst keytab `%s'", to); 69 return 1; 70 } 71 72 ret = krb5_kt_start_seq_get (context, src_keytab, &cursor); 73 if (ret) { 74 krb5_warn (context, ret, "krb5_kt_start_seq_get %s", keytab_string); 75 goto out; 76 } 77 78 if (verbose_flag) 79 fprintf(stderr, "copying %s to %s\n", from, to); 80 81 while((ret = krb5_kt_next_entry(context, src_keytab, 82 &entry, &cursor)) == 0) { 83 char *name_str; 84 char *etype_str; 85 ret = krb5_unparse_name (context, entry.principal, &name_str); 86 if(ret) { 87 krb5_warn(context, ret, "krb5_unparse_name"); 88 name_str = NULL; /* XXX */ 89 } 90 ret = krb5_enctype_to_string(context, entry.keyblock.keytype, &etype_str); 91 if(ret) { 92 krb5_warn(context, ret, "krb5_enctype_to_string"); 93 etype_str = NULL; /* XXX */ 94 } 95 ret = krb5_kt_get_entry(context, dst_keytab, 96 entry.principal, 97 entry.vno, 98 entry.keyblock.keytype, 99 &dummy); 100 if(ret == 0) { 101 /* this entry is already in the new keytab, so no need to 102 copy it; if the keyblocks are not the same, something 103 is weird, so complain about that */ 104 if(!compare_keyblock(&entry.keyblock, &dummy.keyblock)) { 105 krb5_warnx(context, "entry with different keyvalue " 106 "already exists for %s, keytype %s, kvno %d", 107 name_str, etype_str, entry.vno); 108 } 109 krb5_kt_free_entry(context, &dummy); 110 krb5_kt_free_entry (context, &entry); 111 free(name_str); 112 free(etype_str); 113 continue; 114 } else if(ret != KRB5_KT_NOTFOUND) { 115 krb5_warn (context, ret, "%s: fetching %s/%s/%u", 116 to, name_str, etype_str, entry.vno); 117 krb5_kt_free_entry (context, &entry); 118 free(name_str); 119 free(etype_str); 120 break; 121 } 122 if (verbose_flag) 123 fprintf (stderr, "copying %s, keytype %s, kvno %d\n", name_str, 124 etype_str, entry.vno); 125 ret = krb5_kt_add_entry (context, dst_keytab, &entry); 126 krb5_kt_free_entry (context, &entry); 127 if (ret) { 128 krb5_warn (context, ret, "%s: adding %s/%s/%u", 129 to, name_str, etype_str, entry.vno); 130 free(name_str); 131 free(etype_str); 132 break; 133 } 134 free(name_str); 135 free(etype_str); 136 } 137 krb5_kt_end_seq_get (context, src_keytab, &cursor); 138 139 out: 140 krb5_kt_close (context, src_keytab); 141 krb5_kt_close (context, dst_keytab); 142 return ret != 0; 143 } 144