cfb32a638e
Heimdal's HDB plugin interface, and hence Samba's KDC that depends upon it, doesn't work on 32-bit builds due to structure fields being arranged in the wrong order. This problem presents itself in the form of segmentation faults on 32-bit systems, but goes unnoticed on 64-bit builds thanks to extra structure padding absorbing the errant fields. This commit reorders the HDB plugin structure fields to prevent crashes and introduces a common macro to ensure every plugin presents a consistent interface. Samba BUG: https://bugzilla.samba.org/show_bug.cgi?id=15110 Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
92 lines
3.6 KiB
C
92 lines
3.6 KiB
C
/*
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* Copyright (c) 2011, Secure Endpoints Inc.
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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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* - 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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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef HEIMDAL_KRB5_KUSEROK_PLUGIN_H
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#define HEIMDAL_KRB5_KUSEROK_PLUGIN_H 1
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#include <heimbase-svc.h>
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#define KRB5_PLUGIN_KUSEROK "krb5_plugin_kuserok"
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#define KRB5_PLUGIN_KUSEROK_VERSION_0 0
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/** @struct krb5plugin_kuserok_ftable_desc
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*
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* @brief Description of the krb5_kuserok(3) plugin facility.
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*
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* The krb5_kuserok(3) function is pluggable. The plugin is named
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* KRB5_PLUGIN_KUSEROK ("krb5_plugin_kuserok"), with a single minor
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* version, KRB5_PLUGIN_KUSEROK_VERSION_0 (0).
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*
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* The plugin for krb5_kuserok(3) consists of a data symbol referencing
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* a structure of type krb5plugin_kuserok_ftable, with four fields:
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*
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* @param init Plugin initialization function (see krb5-plugin(7))
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*
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* @param minor_version The plugin minor version number (0)
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*
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* @param fini Plugin finalization function
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*
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* @param kuserok Plugin kuserok function
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*
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* The kuserok field is the plugin entry point that performs the
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* traditional kuserok operation however the plugin desires. It is
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* invoked in no particular order relative to other kuserok plugins, but
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* it has a 'rule' argument that indicates which plugin is intended to
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* act on the rule. The plugin kuserok function must return
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* KRB5_PLUGIN_NO_HANDLE if the rule is not applicable to it.
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*
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* The plugin kuserok function has the following arguments, in this
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* order:
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*
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* -# plug_ctx, the context value output by the plugin's init function
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* -# context, a krb5_context
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* -# rule, the kuserok rule being evaluated (from krb5.conf(5))
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* -# flags
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* -# k5login_dir, configured location of k5login per-user files if any
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* -# luser, name of the local user account to which principal is attempting to access.
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* -# principal, the krb5_principal trying to access the luser account
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* -# result, a krb5_boolean pointer where the plugin will output its result
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*
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* @ingroup krb5_support
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*/
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typedef struct krb5plugin_kuserok_ftable_desc {
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HEIM_PLUGIN_FTABLE_COMMON_ELEMENTS(krb5_context);
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krb5_error_code (KRB5_LIB_CALL *kuserok)(void *, krb5_context, const char *,
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unsigned int, const char *, const char *,
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krb5_const_principal,
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krb5_boolean *);
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} krb5plugin_kuserok_ftable;
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#define KUSEROK_ANAME_TO_LNAME_OK 1
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#define KUSEROK_K5LOGIN_IS_AUTHORITATIVE 2
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#endif /* HEIMDAL_KRB5_KUSEROK_PLUGIN_H */
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