/* sasldb.h - SASLdb library header
 * Rob Siemborski
 * Tim Martin
 */
/* 
 * Copyright (c) 1998-2016 Carnegie Mellon University.  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. The name "Carnegie Mellon University" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For permission or any other legal
 *    details, please contact  
 *      Carnegie Mellon University
 *      Center for Technology Transfer and Enterprise Creation
 *      4615 Forbes Avenue
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 *      innovation@andrew.cmu.edu
 *
 * 4. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by Computing Services
 *     at Carnegie Mellon University (http://www.cmu.edu/computing/)."
 *
 * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
 * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef SASLDB_H
#define SASLDB_H

#include "sasl.h"
#include "saslplug.h"

/*
 * Note that some of these require a sasl_conn_t in order for
 * the getcallback stuff to work correctly.  This is great for
 * when they are called from a plugin or the library but makes
 * for much wierdness when an otherwise non-sasl application needs
 * to make use of this functionality.
 */

int _sasldb_getdata(const sasl_utils_t *utils,
		    sasl_conn_t *conn,
		    const char *authid,
		    const char *realm,
		    const char *propName,
		    char *out, const size_t max_out, size_t *out_len);

/* pass NULL for data to delete it */
int _sasldb_putdata(const sasl_utils_t *utils,
		    sasl_conn_t *conn,
		    const char *authid,
		    const char *realm,
		    const char *propName,
		    const char *data, size_t data_len);

/* Should be run before any db access is attempted */
LIBSASL_API int _sasl_check_db(const sasl_utils_t *utils,
		   sasl_conn_t *conn);

/* These allow iterating through the keys of the database */
typedef void* sasldb_handle;

typedef int (* sasldb_list_callback_t) (const char *authid,
				        const char *realm,
					const char *property,
					void *rock);

LIBSASL_API sasldb_handle _sasldb_getkeyhandle(const sasl_utils_t *utils,
				   sasl_conn_t *conn);
LIBSASL_API int _sasldb_getnextkey(const sasl_utils_t *utils,
		       sasldb_handle handle, char *out,
		       const size_t max_out, size_t *out_len);
LIBSASL_API int _sasldb_releasekeyhandle(const sasl_utils_t *utils,
			     sasldb_handle handle);

LIBSASL_API int _sasldb_listusers(const sasl_utils_t *utils,
				  sasl_conn_t *context,
				  sasldb_list_callback_t callback,
				  void *callback_rock);

#if defined(KEEP_DB_OPEN)
void sasldb_auxprop_free (void *glob_context, const sasl_utils_t *utils);
#else
#define sasldb_auxprop_free	NULL
#endif

/* The rest are implemented in allockey.c and individual drivers need not
 * do so */
/* These two are aliases for getdata/putdata */
int _sasldb_getsecret(const sasl_utils_t *utils,
		      sasl_conn_t *context,
		      const char *auth_identity,
		      const char *realm,
		      sasl_secret_t ** secret);

int _sasldb_putsecret(const sasl_utils_t *utils,
		      sasl_conn_t *context,
		      const char *auth_identity,
		      const char *realm,
		      const sasl_secret_t * secret);

LIBSASL_API int _sasldb_parse_key(const char *key, const size_t key_len,
		      char *authid, const size_t max_authid,
		      char *realm, const size_t max_realm,
		      char *propName, const size_t max_propname);

/* This function is internal, but might be useful to have around */
int _sasldb_alloc_key(const sasl_utils_t *utils,
		      const char *auth_identity,
		      const char *realm,
		      const char *propName,
		      char **key,
		      size_t *key_len);

#endif /* SASLDB_H */