/* * Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan * (Royal Institute of Technology, Stockholm, Sweden). * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * 3. Neither the name of the Institute nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include "ktutil_locl.h" RCSID("$Id: copy.c,v 1.7 2001/05/11 00:54:01 assar Exp $"); static krb5_boolean compare_keyblock(const krb5_keyblock *a, const krb5_keyblock *b) { if(a->keytype != b->keytype || a->keyvalue.length != b->keyvalue.length || memcmp(a->keyvalue.data, b->keyvalue.data, a->keyvalue.length) != 0) return FALSE; return TRUE; } static int kt_copy_int (const char *from, const char *to) { krb5_error_code ret; krb5_keytab src_keytab, dst_keytab; krb5_kt_cursor cursor; krb5_keytab_entry entry, dummy; ret = krb5_kt_resolve (context, from, &src_keytab); if (ret) { krb5_warn (context, ret, "resolving src keytab `%s'", from); return 1; } ret = krb5_kt_resolve (context, to, &dst_keytab); if (ret) { krb5_kt_close (context, src_keytab); krb5_warn (context, ret, "resolving dst keytab `%s'", to); return 1; } ret = krb5_kt_start_seq_get (context, src_keytab, &cursor); if (ret) { krb5_warn (context, ret, "krb5_kt_start_seq_get %s", keytab_string); goto out; } if (verbose_flag) fprintf(stderr, "copying %s to %s\n", from, to); while((ret = krb5_kt_next_entry(context, src_keytab, &entry, &cursor)) == 0) { char *name_str; char *etype_str; krb5_unparse_name (context, entry.principal, &name_str); krb5_enctype_to_string(context, entry.keyblock.keytype, &etype_str); ret = krb5_kt_get_entry(context, dst_keytab, entry.principal, entry.vno, entry.keyblock.keytype, &dummy); if(ret == 0) { /* this entry is already in the new keytab, so no need to copy it; if the keyblocks are not the same, something is weird, so complain about that */ if(!compare_keyblock(&entry.keyblock, &dummy.keyblock)) { krb5_warnx(context, "entry with different keyvalue " "already exists for %s, keytype %s, kvno %d", name_str, etype_str, entry.vno); } krb5_kt_free_entry(context, &dummy); krb5_kt_free_entry (context, &entry); free(name_str); free(etype_str); continue; } else if(ret != KRB5_KT_NOTFOUND) { krb5_warn(context, ret, "krb5_kt_get_entry(%s)", name_str); krb5_kt_free_entry (context, &entry); free(name_str); free(etype_str); break; } if (verbose_flag) fprintf (stderr, "copying %s, keytype %s, kvno %d\n", name_str, etype_str, entry.vno); ret = krb5_kt_add_entry (context, dst_keytab, &entry); krb5_kt_free_entry (context, &entry); if (ret) { krb5_warn (context, ret, "krb5_kt_add_entry(%s)", name_str); free(name_str); free(etype_str); break; } free(name_str); free(etype_str); } krb5_kt_end_seq_get (context, src_keytab, &cursor); out: krb5_kt_close (context, src_keytab); krb5_kt_close (context, dst_keytab); return 0; } int kt_copy (int argc, char **argv) { int help_flag = 0; int optind = 0; struct getargs args[] = { { "help", 'h', arg_flag, NULL} }; int num_args = sizeof(args) / sizeof(args[0]); int i = 0; args[i++].value = &help_flag; args[i++].value = &verbose_flag; if(getarg(args, num_args, argc, argv, &optind)) { arg_printusage(args, num_args, "ktutil copy", "keytab-src keytab-dest"); return 1; } if (help_flag) { arg_printusage(args, num_args, "ktutil copy", "keytab-src keytab-dest"); return 1; } argv += optind; argc -= optind; if (argc != 2) { arg_printusage(args, num_args, "ktutil copy", "keytab-src keytab-dest"); return 1; } return kt_copy_int(argv[0], argv[1]); } #ifndef KEYFILE #define KEYFILE "/etc/srvtab" #endif /* copy to from v4 srvtab, just short for copy */ static int conv(int srvconv, int argc, char **argv) { int help_flag = 0; char *srvtab = KEYFILE; int optind = 0; char kt4[1024], kt5[1024]; char *name; struct getargs args[] = { { "srvtab", 's', arg_string, NULL}, { "help", 'h', arg_flag, NULL} }; int num_args = sizeof(args) / sizeof(args[0]); int i = 0; args[i++].value = &srvtab; args[i++].value = &help_flag; if(srvconv) name = "ktutil srvconvert"; else name = "ktutil srvcreate"; if(getarg(args, num_args, argc, argv, &optind)){ arg_printusage(args, num_args, name, ""); return 1; } if(help_flag){ arg_printusage(args, num_args, name, ""); return 0; } argc -= optind; argv += optind; if (argc != 0) { arg_printusage(args, num_args, name, ""); return 1; } snprintf(kt4, sizeof(kt4), "krb4:%s", srvtab); if(srvconv) { if(keytab_string != NULL) return kt_copy_int(kt4, keytab_string); else { krb5_kt_default_modify_name(context, kt5, sizeof(kt5)); return kt_copy_int(kt4, kt5); } } else { if(keytab_string != NULL) return kt_copy_int(keytab_string, kt4); krb5_kt_default_name(context, kt5, sizeof(kt5)); return kt_copy_int(kt5, kt4); } } int srvconv(int argc, char **argv) { return conv(1, argc, argv); } int srvcreate(int argc, char **argv) { return conv(0, argc, argv); }