mirror of
https://github.com/samba-team/samba.git
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147 lines
4.8 KiB
C
147 lines
4.8 KiB
C
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/*
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* Copyright (c) 1997-2004 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "includes.h"
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#include "system/kerberos.h"
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#include "auth/kerberos/kerberos.h"
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static const krb5_boolean verbose_flag = FALSE;
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static krb5_boolean
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compare_keyblock(const krb5_keyblock *a, const krb5_keyblock *b)
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{
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if(a->keytype != b->keytype ||
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a->keyvalue.length != b->keyvalue.length ||
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memcmp(a->keyvalue.data, b->keyvalue.data, a->keyvalue.length) != 0)
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return FALSE;
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return TRUE;
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}
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krb5_error_code kt_copy (krb5_context context, const char *from, const char *to)
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{
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krb5_error_code ret;
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krb5_keytab src_keytab, dst_keytab;
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krb5_kt_cursor cursor;
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krb5_keytab_entry entry, dummy;
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ret = krb5_kt_resolve (context, from, &src_keytab);
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if (ret) {
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krb5_warn (context, ret, "resolving src keytab `%s'", from);
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return 1;
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}
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ret = krb5_kt_resolve (context, to, &dst_keytab);
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if (ret) {
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krb5_kt_close (context, src_keytab);
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krb5_warn (context, ret, "resolving dst keytab `%s'", to);
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return 1;
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}
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ret = krb5_kt_start_seq_get (context, src_keytab, &cursor);
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if (ret) {
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krb5_warn (context, ret, "krb5_kt_start_seq_get %s", from);
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goto out;
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}
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if (verbose_flag)
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fprintf(stderr, "copying %s to %s\n", from, to);
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while((ret = krb5_kt_next_entry(context, src_keytab,
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&entry, &cursor)) == 0) {
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char *name_str;
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char *etype_str;
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ret = krb5_unparse_name (context, entry.principal, &name_str);
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if(ret) {
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krb5_warn(context, ret, "krb5_unparse_name");
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name_str = NULL; /* XXX */
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}
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ret = krb5_enctype_to_string(context, entry.keyblock.keytype, &etype_str);
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if(ret) {
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krb5_warn(context, ret, "krb5_enctype_to_string");
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etype_str = NULL; /* XXX */
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}
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ret = krb5_kt_get_entry(context, dst_keytab,
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entry.principal,
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entry.vno,
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entry.keyblock.keytype,
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&dummy);
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if(ret == 0) {
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/* this entry is already in the new keytab, so no need to
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copy it; if the keyblocks are not the same, something
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is weird, so complain about that */
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if(!compare_keyblock(&entry.keyblock, &dummy.keyblock)) {
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krb5_warnx(context, "entry with different keyvalue "
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"already exists for %s, keytype %s, kvno %d",
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name_str, etype_str, entry.vno);
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}
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krb5_kt_free_entry(context, &dummy);
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krb5_kt_free_entry (context, &entry);
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free(name_str);
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free(etype_str);
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continue;
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} else if(ret != KRB5_KT_NOTFOUND) {
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krb5_warn (context, ret, "%s: fetching %s/%s/%u",
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to, name_str, etype_str, entry.vno);
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krb5_kt_free_entry (context, &entry);
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free(name_str);
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free(etype_str);
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break;
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}
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if (verbose_flag)
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fprintf (stderr, "copying %s, keytype %s, kvno %d\n", name_str,
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etype_str, entry.vno);
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ret = krb5_kt_add_entry (context, dst_keytab, &entry);
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krb5_kt_free_entry (context, &entry);
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if (ret) {
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krb5_warn (context, ret, "%s: adding %s/%s/%u",
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to, name_str, etype_str, entry.vno);
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free(name_str);
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free(etype_str);
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break;
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}
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free(name_str);
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free(etype_str);
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}
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krb5_kt_end_seq_get (context, src_keytab, &cursor);
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out:
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krb5_kt_close (context, src_keytab);
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krb5_kt_close (context, dst_keytab);
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if (ret == KRB5_KT_END) {
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return 0;
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} else if (ret == 0) {
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return EINVAL;
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}
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return ret;
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}
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