1 /* 2 * Copyright (c) 1997 - 2000 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,v 1.5 2000/12/16 00:45:29 joda 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 0; 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 0; 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 fail; 74 } 75 76 while((ret = krb5_kt_next_entry(context, src_keytab, 77 &entry, &cursor)) == 0) { 78 char *name_str; 79 char *etype_str; 80 krb5_unparse_name (context, entry.principal, &name_str); 81 krb5_enctype_to_string(context, entry.keyblock.keytype, &etype_str); 82 ret = krb5_kt_get_entry(context, dst_keytab, 83 entry.principal, 84 entry.vno, 85 entry.keyblock.keytype, 86 &dummy); 87 if(ret == 0) { 88 /* this entry is already in the new keytab, so no need to 89 copy it; if the keyblocks are not the same, something 90 is weird, so complain about that */ 91 if(!compare_keyblock(&entry.keyblock, &dummy.keyblock)) { 92 krb5_warnx(context, "entry with different keyvalue " 93 "already exists for %s, keytype %s, kvno %d", 94 name_str, etype_str, entry.vno); 95 } 96 krb5_kt_free_entry(context, &dummy); 97 krb5_kt_free_entry (context, &entry); 98 free(name_str); 99 free(etype_str); 100 continue; 101 } else if(ret != KRB5_KT_NOTFOUND) { 102 krb5_warn(context, ret, "krb5_kt_get_entry(%s)", name_str); 103 krb5_kt_free_entry (context, &entry); 104 free(name_str); 105 free(etype_str); 106 break; 107 } 108 if (verbose_flag) 109 fprintf (stderr, "copying %s, keytype %s, kvno %d\n", name_str, 110 etype_str, entry.vno); 111 ret = krb5_kt_add_entry (context, dst_keytab, &entry); 112 krb5_kt_free_entry (context, &entry); 113 if (ret) { 114 krb5_warn (context, ret, "krb5_kt_add_entry(%s)", name_str); 115 free(name_str); 116 free(etype_str); 117 break; 118 } 119 free(name_str); 120 free(etype_str); 121 } 122 krb5_kt_end_seq_get (context, src_keytab, &cursor); 123 124 fail: 125 krb5_kt_close (context, src_keytab); 126 krb5_kt_close (context, dst_keytab); 127 return 0; 128 } 129 130 int 131 kt_copy (int argc, char **argv) 132 { 133 int help_flag = 0; 134 int optind = 0; 135 136 struct getargs args[] = { 137 { "help", 'h', arg_flag, NULL} 138 }; 139 140 int num_args = sizeof(args) / sizeof(args[0]); 141 int i = 0; 142 143 args[i++].value = &help_flag; 144 args[i++].value = &verbose_flag; 145 146 if(getarg(args, num_args, argc, argv, &optind)) { 147 arg_printusage(args, num_args, "ktutil copy", 148 "keytab-src keytab-dest"); 149 return 0; 150 } 151 if (help_flag) { 152 arg_printusage(args, num_args, "ktutil copy", 153 "keytab-src keytab-dest"); 154 return 0; 155 } 156 157 argv += optind; 158 argc -= optind; 159 160 if (argc != 2) { 161 arg_printusage(args, num_args, "ktutil copy", 162 "keytab-src keytab-dest"); 163 return 0; 164 } 165 166 return kt_copy_int(argv[0], argv[1]); 167 } 168 169 #ifndef KEYFILE 170 #define KEYFILE "/etc/srvtab" 171 #endif 172 173 /* copy to from v4 srvtab, just short for copy */ 174 static int 175 conv(int srvconv, int argc, char **argv) 176 { 177 int help_flag = 0; 178 char *srvtab = KEYFILE; 179 int optind = 0; 180 char kt4[1024], kt5[1024]; 181 182 char *name; 183 184 struct getargs args[] = { 185 { "srvtab", 's', arg_string, NULL}, 186 { "help", 'h', arg_flag, NULL} 187 }; 188 189 int num_args = sizeof(args) / sizeof(args[0]); 190 int i = 0; 191 192 args[i++].value = &srvtab; 193 args[i++].value = &help_flag; 194 195 if(srvconv) 196 name = "ktutil srvconvert"; 197 else 198 name = "ktutil srvcreate"; 199 200 if(getarg(args, num_args, argc, argv, &optind)){ 201 arg_printusage(args, num_args, name, ""); 202 return 1; 203 } 204 if(help_flag){ 205 arg_printusage(args, num_args, name, ""); 206 return 0; 207 } 208 209 argc -= optind; 210 argv += optind; 211 212 if (argc != 0) { 213 arg_printusage(args, num_args, name, ""); 214 return 1; 215 } 216 217 snprintf(kt4, sizeof(kt4), "krb4:%s", srvtab); 218 219 if(srvconv) { 220 if(keytab_string != NULL) 221 return kt_copy_int(kt4, keytab_string); 222 else { 223 krb5_kt_default_name(context, kt5, sizeof(kt5)); 224 return kt_copy_int(kt4, kt5); 225 } 226 } else { 227 if(keytab_string != NULL) 228 return kt_copy_int(keytab_string, kt4); 229 230 krb5_kt_default_name(context, kt5, sizeof(kt5)); 231 return kt_copy_int(kt5, kt4); 232 } 233 } 234 235 int 236 srvconv(int argc, char **argv) 237 { 238 return conv(1, argc, argv); 239 } 240 241 int 242 srvcreate(int argc, char **argv) 243 { 244 return conv(0, argc, argv); 245 } 246