add cred cache copy tool
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@13771 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Johan Danielsson
314
kuser/copy_cred_cache.c
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314
kuser/copy_cred_cache.c
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/*
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* Copyright (c) 2004 Kungliga Tekniska H<>gskolan
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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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#ifdef HAVE_CONFIG_H
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#include <config.h>
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RCSID("$Id$");
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#endif
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#include <stdlib.h>
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#include <krb5.h>
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#include <roken.h>
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#include <getarg.h>
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#include <parse_units.h>
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static int krbtgt_only_flag;
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static char *service_string;
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static char *enctype_string;
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static char *flags_string;
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static int fcache_version;
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static int help_flag;
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static int version_flag;
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static struct getargs args[] = {
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{ "krbtgt-only", 0, arg_flag, &krbtgt_only_flag,
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"only copy local krbtgt" },
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{ "service", 0, arg_string, &service_string,
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"limit to this service", "principal" },
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{ "enctype", 0, arg_string, &enctype_string,
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"limit to this enctype", "enctype" },
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{ "flags", 0, arg_string, &flags_string,
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"limit to these flags", "ticketflags" },
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{ "fcache-version", 0, arg_integer, &fcache_version,
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"file cache version to create" },
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{ "version", 0, arg_flag, &version_flag },
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{ "help", 'h', arg_flag, &help_flag }
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};
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static void
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usage(int ret)
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{
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arg_printusage(args,
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sizeof(args) / sizeof(*args),
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NULL,
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"[from-cache] to-cache");
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exit(ret);
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}
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#define KRB5_TC_MATCH_SRV_NAMEONLY (1 << 29)
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#define KRB5_TC_MATCH_FLAGS_EXACT (1 << 28)
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#define KRB5_TC_MATCH_FLAGS (1 << 27)
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#define KRB5_TC_MATCH_TIMES_EXACT (1 << 26)
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#define KRB5_TC_MATCH_TIMES (1 << 25)
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#define KRB5_TC_MATCH_AUTHDATA (1 << 24)
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#define KRB5_TC_MATCH_2ND_TKT (1 << 23)
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static krb5_boolean
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krb5_compare_creds2(krb5_context context, krb5_flags whichfields,
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const krb5_creds * mcreds, const krb5_creds * creds)
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{
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krb5_boolean match = TRUE;
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if (match && mcreds->server) {
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if (whichfields & (KRB5_TC_DONT_MATCH_REALM | KRB5_TC_MATCH_SRV_NAMEONLY))
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match = krb5_principal_compare_any_realm (context, mcreds->server,
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creds->server);
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else
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match = krb5_principal_compare (context, mcreds->server,
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creds->server);
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}
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if (match && mcreds->client) {
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if(whichfields & KRB5_TC_DONT_MATCH_REALM)
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match = krb5_principal_compare_any_realm (context, mcreds->client,
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creds->client);
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else
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match = krb5_principal_compare (context, mcreds->client,
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creds->client);
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}
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if (match && (whichfields & KRB5_TC_MATCH_KEYTYPE) &&
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!krb5_enctypes_compatible_keys(context,
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mcreds->session.keytype,
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creds->session.keytype))
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match = FALSE;
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if (match && (whichfields & KRB5_TC_MATCH_FLAGS_EXACT) &&
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mcreds->flags.i != creds->flags.i)
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match = FALSE;
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if (match && (whichfields & KRB5_TC_MATCH_FLAGS) &&
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(creds->flags.i & mcreds->flags.i) != mcreds->flags.i)
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match = FALSE;
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return match;
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}
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static krb5_error_code
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krb5_cc_next_cred_match(krb5_context context,
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const krb5_ccache id,
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krb5_cc_cursor * cursor,
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krb5_creds * creds,
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krb5_flags whichfields,
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const krb5_creds * mcreds)
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{
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krb5_error_code ret;
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while (1) {
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ret = krb5_cc_next_cred(context, id, cursor, creds);
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if (ret)
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return ret;
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if (mcreds == NULL || krb5_compare_creds2(context, whichfields, mcreds, creds))
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return 0;
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krb5_free_creds_contents(context, creds);
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}
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}
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static krb5_error_code
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krb5_cc_copy_cache_match(krb5_context context,
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const krb5_ccache from,
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krb5_ccache to,
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krb5_flags whichfields,
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const krb5_creds * mcreds,
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unsigned int *matched)
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{
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krb5_error_code ret;
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krb5_cc_cursor cursor;
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krb5_creds cred;
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krb5_principal princ;
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ret = krb5_cc_get_principal(context, from, &princ);
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if (ret)
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return ret;
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ret = krb5_cc_initialize(context, to, princ);
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if (ret) {
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krb5_free_principal(context, princ);
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return ret;
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}
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ret = krb5_cc_start_seq_get(context, from, &cursor);
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if (ret) {
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krb5_free_principal(context, princ);
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return ret;
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}
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if (matched)
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*matched = 0;
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while (ret == 0 &&
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krb5_cc_next_cred_match(context, from, &cursor, &cred,
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whichfields, mcreds) == 0) {
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if (matched)
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(*matched)++;
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ret = krb5_cc_store_cred(context, to, &cred);
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krb5_free_creds_contents(context, &cred);
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}
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krb5_cc_end_seq_get(context, from, &cursor);
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krb5_free_principal(context, princ);
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return ret;
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}
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static int32_t
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bitswap32(int32_t b)
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{
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int32_t r = 0;
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int i;
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for (i = 0; i < 32; i++) {
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r = r << 1 | (b & 1);
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b = b >> 1;
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}
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return r;
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}
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static void
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parse_ticket_flags(krb5_context context,
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const char *flags_string, krb5_ticket_flags *ret_flags)
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{
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TicketFlags ff;
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int flags = parse_flags(flags_string, TicketFlags_units, 0);
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if (flags == -1) /* XXX */
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krb5_errx(context, 1, "bad flags specified: \"%s\"", flags_string);
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memset(&ff, 0, sizeof(ff));
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ff.proxy = 1;
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if (parse_flags("proxy", TicketFlags_units, 0) == TicketFlags2int(ff))
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ret_flags->i = flags;
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else
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ret_flags->i = bitswap32(flags);
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}
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int
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main(int argc, char **argv)
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{
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krb5_error_code ret;
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krb5_context context;
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int optind = 0;
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const char *from_name, *to_name;
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krb5_ccache from_ccache, to_ccache;
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krb5_flags whichfields = 0;
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krb5_creds mcreds;
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unsigned int matched;
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setprogname(argv[0]);
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memset(&mcreds, 0, sizeof(mcreds));
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if (getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optind))
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usage(1);
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if (help_flag)
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usage(0);
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if (version_flag) {
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print_version(NULL);
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exit(0);
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}
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argc -= optind;
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argv += optind;
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if (argc < 1 || argc > 2)
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usage(1);
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if (krb5_init_context(&context))
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errx(1, "krb5_init_context failed");
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if (service_string) {
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ret = krb5_parse_name(context, service_string, &mcreds.server);
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if (ret)
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krb5_err(context, 1, ret, "%s", service_string);
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}
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if (enctype_string) {
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krb5_enctype enctype;
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ret = krb5_string_to_enctype(context, enctype_string, &enctype);
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if (ret)
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krb5_err(context, 1, ret, "%s", enctype_string);
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whichfields |= KRB5_TC_MATCH_KEYTYPE;
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mcreds.session.keytype = enctype;
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}
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if (flags_string) {
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parse_ticket_flags(context, flags_string, &mcreds.flags);
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whichfields |= KRB5_TC_MATCH_FLAGS;
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}
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if (fcache_version)
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krb5_set_fcache_version(context, fcache_version);
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if (argc == 1) {
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from_name = krb5_cc_default_name(context);
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to_name = argv[0];
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} else {
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from_name = argv[0];
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to_name = argv[1];
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}
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ret = krb5_cc_resolve(context, from_name, &from_ccache);
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if (ret)
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krb5_err(context, 1, ret, "%s", from_name);
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if (krbtgt_only_flag) {
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krb5_principal client;
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ret = krb5_cc_get_principal(context, from_ccache, &client);
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if (ret)
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krb5_err(context, 1, ret, "getting default principal");
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ret = krb5_make_principal(context, &mcreds.server,
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krb5_principal_get_realm(context, client),
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KRB5_TGS_NAME,
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krb5_principal_get_realm(context, client),
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NULL);
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if (ret)
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krb5_err(context, 1, ret, "constructing krbtgt principal");
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krb5_free_principal(context, client);
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}
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ret = krb5_cc_resolve(context, to_name, &to_ccache);
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if (ret)
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krb5_err(context, 1, ret, "%s", to_name);
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ret = krb5_cc_copy_cache_match(context, from_ccache, to_ccache,
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whichfields, &mcreds, &matched);
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if (ret)
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krb5_err(context, 1, ret, "copying cred cache");
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krb5_cc_close(context, from_ccache);
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if(matched == 0)
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krb5_cc_destroy(context, to_ccache);
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else
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krb5_cc_close(context, to_ccache);
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krb5_free_context(context);
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return matched == 0;
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}
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