Files
admin
appl
cf
doc
etc
include
kadmin
kdc
kpasswd
kuser
lib
45
asn1
auth
com_err
des
editline
gssapi
hdb
kadm5
kafs
krb5
.cvsignore
Makefile.am
add_et_list.c
addr_families.c
address.c
aname_to_localname.c
asn1_glue.c
auth_context.c
build_ap_req.c
build_auth.c
cache.c
changepw.c
codec.c
config_file.c
config_file_netinfo.c
constants.c
context.c
convert_creds.c
copy_host_realm.c
crc.c
creds.c
crypto.c
data.c
dump_config.c
expand_hostname.c
fcache.c
free.c
free_host_realm.c
generate_seq_number.c
generate_subkey.c
get_addrs.c
get_cred.c
get_default_principal.c
get_default_realm.c
get_for_creds.c
get_host_realm.c
get_in_tkt.c
get_in_tkt_pw.c
get_in_tkt_with_keytab.c
get_in_tkt_with_skey.c
get_port.c
heim_err.et
init_creds.c
init_creds_pw.c
keyblock.c
keytab.c
keytab_file.c
keytab_keyfile.c
keytab_krb4.c
keytab_memory.c
krb5.conf.5
krb5.h
krb5_425_conv_principal.3
krb5_build_principal.3
krb5_create_checksum.3
krb5_crypto_init.3
krb5_encrypt.3
krb5_err.et
krb5_free_principal.3
krb5_locl.h
krb5_openlog.3
krb5_parse_name.3
krb5_sname_to_principal.3
krb5_unparse_name.3
krb5_warn.3
krbhst.c
kuserok.c
log.c
mcache.c
misc.c
mk_error.c
mk_priv.c
mk_rep.c
mk_req.c
mk_req_ext.c
mk_safe.c
n-fold-test.c
n-fold.c
net_read.c
net_write.c
padata.c
principal.c
prog_setup.c
prompter_posix.c
rd_cred.c
rd_error.c
rd_priv.c
rd_rep.c
rd_req.c
rd_safe.c
read_message.c
recvauth.c
replay.c
send_to_kdc.c
sendauth.c
set_default_realm.c
sock_principal.c
store.c
store_emem.c
store_fd.c
store_mem.c
string-to-key-test.c
ticket.c
time.c
transited.c
verify_init.c
verify_krb5_conf.8
verify_krb5_conf.c
verify_user.c
version.c
warn.c
write_message.c
otp
roken
sl
.cvsignore
Makefile.am
.cvsignore
ChangeLog
Makefile.am
Makefile.am.common
NEWS
TODO
acconfig.h
acinclude.m4
config.guess
config.sub
configure.in
fix-export
install-sh
krb5.conf
ltconfig
ltmain.sh
make-release
make-release.el
missing
mkinstalldirs
heimdal/lib/krb5/rd_priv.c
Assar Westerlund 1f6160cdde (krb5_rd_priv): increment sequence number after comparing
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@8148 ec53bebd-3082-4978-b11e-865c3cabbd6b
2000-04-08 21:23:16 +00:00

151 lines
4.3 KiB
C

/*
* Copyright (c) 1997 - 2000 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 <krb5_locl.h>
RCSID("$Id$");
krb5_error_code
krb5_rd_priv(krb5_context context,
krb5_auth_context auth_context,
const krb5_data *inbuf,
krb5_data *outbuf,
/*krb5_replay_data*/ void *outdata)
{
krb5_error_code ret;
KRB_PRIV priv;
EncKrbPrivPart part;
size_t len;
krb5_data plain;
krb5_keyblock *key;
krb5_crypto crypto;
memset(&priv, 0, sizeof(priv));
ret = decode_KRB_PRIV (inbuf->data, inbuf->length, &priv, &len);
if (ret)
goto failure;
if (priv.pvno != 5) {
ret = KRB5KRB_AP_ERR_BADVERSION;
goto failure;
}
if (priv.msg_type != krb_priv) {
ret = KRB5KRB_AP_ERR_MSG_TYPE;
goto failure;
}
/* XXX - Is this right? */
if (auth_context->local_subkey)
key = auth_context->local_subkey;
else if (auth_context->remote_subkey)
key = auth_context->remote_subkey;
else
key = auth_context->keyblock;
krb5_crypto_init(context, key, 0, &crypto);
ret = krb5_decrypt_EncryptedData(context,
crypto,
KRB5_KU_KRB_PRIV,
&priv.enc_part,
&plain);
krb5_crypto_destroy(context, crypto);
if (ret)
goto failure;
ret = decode_EncKrbPrivPart (plain.data, plain.length, &part, &len);
krb5_data_free (&plain);
if (ret)
goto failure;
/* check sender address */
if (part.s_address
&& auth_context->remote_address
&& !krb5_address_compare (context,
auth_context->remote_address,
part.s_address)) {
ret = KRB5KRB_AP_ERR_BADADDR;
goto failure_part;
}
/* check receiver address */
if (part.r_address
&& auth_context->local_address
&& !krb5_address_compare (context,
auth_context->local_address,
part.r_address)) {
ret = KRB5KRB_AP_ERR_BADADDR;
goto failure_part;
}
/* check timestamp */
if (auth_context->flags & KRB5_AUTH_CONTEXT_DO_TIME) {
krb5_timestamp sec;
krb5_timeofday (context, &sec);
if (part.timestamp == NULL ||
part.usec == NULL ||
abs(*part.timestamp - sec) > context->max_skew) {
ret = KRB5KRB_AP_ERR_SKEW;
goto failure_part;
}
}
/* XXX - check replay cache */
/* check sequence number */
if (auth_context->flags & KRB5_AUTH_CONTEXT_DO_SEQUENCE) {
if (part.seq_number == NULL ||
*part.seq_number != auth_context->remote_seqnumber++) {
ret = KRB5KRB_AP_ERR_BADORDER;
goto failure_part;
}
}
ret = krb5_data_copy (outbuf, part.user_data.data, part.user_data.length);
if (ret)
goto failure_part;
free_EncKrbPrivPart (&part);
free_KRB_PRIV (&priv);
return 0;
failure_part:
free_EncKrbPrivPart (&part);
failure:
free_KRB_PRIV (&priv);
return ret;
}