ca052eadd5
Delegated or other explicit credentials were mishandled, the code only
worked correctly when processing default credentials. In particular
this caused root's default credential cache to be accessed when accepting
delegated credentials in SSH:
ssh_gssapi_accept_ctx() ->
ssh_gssapi_getclient() ->
gss_inquire_cred_by_mech()
When /tmp/krb5cc_0 contained expired tickets, cascaded credentials
stopped working for non-root users!
79 lines
2.7 KiB
C
79 lines
2.7 KiB
C
/*
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* Copyright (c) 2003, 2006, 2007 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 "gsskrb5_locl.h"
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OM_uint32 GSSAPI_CALLCONV _gsskrb5_inquire_cred_by_mech (
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OM_uint32 * minor_status,
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gss_const_cred_id_t cred_handle,
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const gss_OID mech_type,
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gss_name_t * name,
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OM_uint32 * initiator_lifetime,
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OM_uint32 * acceptor_lifetime,
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gss_cred_usage_t * cred_usage
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)
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{
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gss_cred_usage_t usage;
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OM_uint32 maj_stat;
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OM_uint32 lifetime;
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/*
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* XXX This is busted. _gsskrb5_inquire_cred() should be implemented in
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* terms of _gsskrb5_inquire_cred_by_mech(), NOT the other way around.
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*/
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maj_stat =
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_gsskrb5_inquire_cred (minor_status, cred_handle,
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name, &lifetime, &usage, NULL);
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if (maj_stat)
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return maj_stat;
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if (initiator_lifetime) {
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if (usage == GSS_C_INITIATE || usage == GSS_C_BOTH)
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*initiator_lifetime = lifetime;
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else
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*initiator_lifetime = 0;
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}
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if (acceptor_lifetime) {
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if (usage == GSS_C_ACCEPT || usage == GSS_C_BOTH)
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*acceptor_lifetime = lifetime;
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else
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*acceptor_lifetime = 0;
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}
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if (cred_usage)
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*cred_usage = usage;
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return GSS_S_COMPLETE;
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}
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