1 /* 2 * Copyright (c) 1997-2004 Kungliga Tekniska H�gskolan 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 14260 2004-09-23 14:45:29Z joda $"); 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 ret = krb5_unparse_name (context, entry.principal, &name_str); 84 if(ret) { 85 krb5_warn(context, ret, "krb5_unparse_name"); 86 name_str = NULL; /* XXX */ 87 } 88 ret = krb5_enctype_to_string(context, entry.keyblock.keytype, &etype_str); 89 if(ret) { 90 krb5_warn(context, ret, "krb5_enctype_to_string"); 91 etype_str = NULL; /* XXX */ 92 } 93 ret = krb5_kt_get_entry(context, dst_keytab, 94 entry.principal, 95 entry.vno, 96 entry.keyblock.keytype, 97 &dummy); 98 if(ret == 0) { 99 /* this entry is already in the new keytab, so no need to 100 copy it; if the keyblocks are not the same, something 101 is weird, so complain about that */ 102 if(!compare_keyblock(&entry.keyblock, &dummy.keyblock)) { 103 krb5_warnx(context, "entry with different keyvalue " 104 "already exists for %s, keytype %s, kvno %d", 105 name_str, etype_str, entry.vno); 106 } 107 krb5_kt_free_entry(context, &dummy); 108 krb5_kt_free_entry (context, &entry); 109 free(name_str); 110 free(etype_str); 111 continue; 112 } else if(ret != KRB5_KT_NOTFOUND) { 113 krb5_warn (context, ret, "%s: fetching %s/%s/%u", 114 to, name_str, etype_str, entry.vno); 115 krb5_kt_free_entry (context, &entry); 116 free(name_str); 117 free(etype_str); 118 break; 119 } 120 if (verbose_flag) 121 fprintf (stderr, "copying %s, keytype %s, kvno %d\n", name_str, 122 etype_str, entry.vno); 123 ret = krb5_kt_add_entry (context, dst_keytab, &entry); 124 krb5_kt_free_entry (context, &entry); 125 if (ret) { 126 krb5_warn (context, ret, "%s: adding %s/%s/%u", 127 to, name_str, etype_str, entry.vno); 128 free(name_str); 129 free(etype_str); 130 break; 131 } 132 free(name_str); 133 free(etype_str); 134 } 135 krb5_kt_end_seq_get (context, src_keytab, &cursor); 136 137 out: 138 krb5_kt_close (context, src_keytab); 139 krb5_kt_close (context, dst_keytab); 140 return ret != 0; 141 } 142 143 int 144 kt_copy (void *opt, int argc, char **argv) 145 { 146 return kt_copy_int(argv[0], argv[1]); 147 } 148 149 int 150 srvconv(struct srvconvert_options *opt, int argc, char **argv) 151 { 152 char kt4[1024], kt5[1024]; 153 154 snprintf(kt4, sizeof(kt4), "krb4:%s", opt->srvtab_string); 155 156 if(keytab_string != NULL) 157 return kt_copy_int(kt4, keytab_string); 158 159 krb5_kt_default_modify_name(context, kt5, sizeof(kt5)); 160 return kt_copy_int(kt4, kt5); 161 } 162 163 int 164 srvcreate(struct srvcreate_options *opt, int argc, char **argv) 165 { 166 char kt4[1024], kt5[1024]; 167 168 snprintf(kt4, sizeof(kt4), "krb4:%s", opt->srvtab_string); 169 170 if(keytab_string != NULL) 171 return kt_copy_int(keytab_string, kt4); 172 173 krb5_kt_default_name(context, kt5, sizeof(kt5)); 174 return kt_copy_int(kt5, kt4); 175 } 176