1 /* 2 * Copyright (c) 1997 - 2001 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 1.9 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 } 248