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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* include/krb5/kadm5_hook_plugin.h
*/
/*
* Copyright (C) 2010 by the Massachusetts Institute of Technology.
* All rights reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*/
#ifndef H_KRB5_KADM5_HOOK_PLUGIN
#define H_KRB5_KADM5_HOOK_PLUGIN
/**
* @file krb5/krb5_kadm5_hook_plugin.h
* Provide a plugin interface for kadm5 operations. This interface
* permits a plugin to intercept principal modification, creation and
* change password operations. Operations run at two stages: a
* precommit stage that runs before the operation is committed to the
* database and a postcommit operation that runs after the database
* is updated; see #kadm5_hook_stage for details on semantics.
*
* This interface is based on a proposed extension to Heimdal by Russ
* Allbery; it is likely that Heimdal will adopt an approach based on
* stacked kdb modules rather than this interface. For MIT, writing a
* plugin to this interface is significantly easier than stacking kdb
* modules. Also, the kadm5 interface is significantly more stable
* than the kdb interface, so this approach is more desirable than
* stacked kdb modules.
*
* This interface depends on kadm5/admin.h. As such, the interface
* does not provide strong guarantees of ABI stability.
*/
#include <krb5/krb5.h>
#include <krb5/plugin.h>
#include <kadm5/admin.h>
/**
* Whether the operation is being run before or after the database
* update
*/
enum kadm5_hook_stage {
/** In this stage, any plugin failure prevents following plugins from
* running and aborts the operation.*/
KADM5_HOOK_STAGE_PRECOMMIT,
/** In this stage, plugin failures are logged but otherwise ignored.*/
KADM5_HOOK_STAGE_POSTCOMMIT
};
/** Opaque module data pointer*/
typedef struct kadm5_hook_modinfo_st kadm5_hook_modinfo;
/**
* Interface for the v1 virtual table for the kadm5_hook plugin
* All entry points are optional. The name field must be provided.
*/
typedef struct kadm5_hook_vtable_1_st {
/** A text string identifying the plugin for logging messages*/
char *name;
/** Initialize a plugin module
* @param modinfo returns newly allocated module info for future
* calls. Cleaned up by the fini() function.
*/
kadm5_ret_t (*init)(krb5_context, kadm5_hook_modinfo **modinfo);
/** Clean up a module and free @a modinfo*/
void (*fini)(krb5_context, kadm5_hook_modinfo *modinfo);
/** Indicates that the password is being changed.
* @param stage is an integer from #kadm5_hook_stage enumeration
* @param keepold is true if existing keys are being kept.
* */
kadm5_ret_t (*chpass)(krb5_context,
kadm5_hook_modinfo *modinfo,
int stage,
krb5_principal, krb5_boolean keepold,
int n_ks_tuple,
krb5_key_salt_tuple *ks_tuple,
const char *newpass);
/** Indicate a principal is created*/
kadm5_ret_t (*create)(krb5_context,
kadm5_hook_modinfo *,
int stage,
kadm5_principal_ent_t, long mask,
int n_ks_tuple,
krb5_key_salt_tuple *ks_tuple,
const char *password);
/** Modify a principal*/
kadm5_ret_t (*modify)(krb5_context,
kadm5_hook_modinfo *,
int stage,
kadm5_principal_ent_t, long mask);
/** Indicate a principal is deleted*/
kadm5_ret_t (* remove) (krb5_context,
kadm5_hook_modinfo *modinfo,
int stage, krb5_principal
);
/*End of minor version 1*/
}kadm5_hook_vftable_1;
#endif /*H_KRB5_KADM5_HOOK_PLUGIN*/
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