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>
133 lines
4.5 KiB
C
133 lines
4.5 KiB
C
/*
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* Copyright (c) 2006 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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/* $Id$ */
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#ifndef HEIMDAL_KDC_KDC_PLUGIN_H
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#define HEIMDAL_KDC_KDC_PLUGIN_H 1
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#include <krb5.h>
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#include <kdc.h>
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#include <kdc-accessors.h>
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#include <hdb.h>
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/*
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* Allocate a PAC for the given client with krb5_pac_init(),
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* and fill its contents in with krb5_pac_add_buffer().
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*/
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typedef krb5_error_code
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(KRB5_CALLCONV *krb5plugin_kdc_pac_generate)(void *,
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astgs_request_t,
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hdb_entry *, /* client */
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hdb_entry *, /* server */
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const krb5_keyblock *, /* pk_replykey */
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uint64_t, /* pac_attributes */
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krb5_pac *);
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/*
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* Verify the PAC KDC signatures by fetching the appropriate TGS key
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* and calling krb5_pac_verify() with that key. Optionally update the
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* PAC buffers on success.
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*/
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typedef krb5_error_code
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(KRB5_CALLCONV *krb5plugin_kdc_pac_verify)(void *,
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astgs_request_t,
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const krb5_principal, /* new ticket client */
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const krb5_principal, /* delegation proxy */
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hdb_entry *,/* client */
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hdb_entry *,/* server */
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hdb_entry *,/* krbtgt */
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krb5_pac *);
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/*
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* Authorize the client principal's access to the Authentication Service (AS).
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* This function is called after any pre-authentication has completed.
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*/
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typedef krb5_error_code
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(KRB5_CALLCONV *krb5plugin_kdc_client_access)(void *, astgs_request_t);
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/*
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* A referral policy plugin can either rewrite the server principal
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* by resetting priv->server_princ, or it can disable referral
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* processing entirely by returning an error.
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*
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* The error code from the previous server lookup is available as r->ret.
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*
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* If the function returns KRB5_PLUGIN_NO_HANDLE, the TGS will continue
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* with its default referral handling.
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*
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* Note well: the plugin should free priv->server_princ is replacing.
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*/
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typedef krb5_error_code
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(KRB5_CALLCONV *krb5plugin_kdc_referral_policy)(void *, astgs_request_t);
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/*
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* Update the AS or TGS reply immediately prior to encoding.
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*/
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typedef krb5_error_code
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(KRB5_CALLCONV *krb5plugin_kdc_finalize_reply)(void *, astgs_request_t);
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/*
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* Audit an AS or TGS request. This function is called after encoding the
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* reply (on success), or before encoding the error message. If a HDB audit
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* function is also present, it is called after this one.
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*
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* The request should not be modified by the plugin.
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*/
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typedef krb5_error_code
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(KRB5_CALLCONV *krb5plugin_kdc_audit)(void *, astgs_request_t);
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/*
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* Plugins should carefully check API contract notes for changes
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* between plugin API versions.
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*/
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#define KRB5_PLUGIN_KDC_VERSION_10 10
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typedef struct krb5plugin_kdc_ftable {
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HEIM_PLUGIN_FTABLE_COMMON_ELEMENTS(krb5_context);
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krb5plugin_kdc_pac_generate pac_generate;
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krb5plugin_kdc_pac_verify pac_verify;
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krb5plugin_kdc_client_access client_access;
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krb5plugin_kdc_referral_policy referral_policy;
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krb5plugin_kdc_finalize_reply finalize_reply;
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krb5plugin_kdc_audit audit;
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} krb5plugin_kdc_ftable;
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#endif /* HEIMDAL_KDC_KDC_PLUGIN_H */
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