/* sieve_db.h -- abstract interface for per-user Sieve database
 *
 * Copyright (c) 1994-2020 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 legal
 *    details, please contact
 *      Carnegie Mellon University
 *      Center for Technology Transfer and Enterprise Creation
 *      4615 Forbes Avenue
 *      Suite 302
 *      Pittsburgh, PA  15213
 *      (412) 268-7393, fax: (412) 268-7395
 *      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 SIEVE_DB_H
#define SIEVE_DB_H

#include <config.h>

#include "mailbox.h"
#include "sqldb.h"

struct sieve_db;

#define SIEVE_CREATE 0x01
#define SIEVE_TRUNC  0x02

#define SIEVE_EXTENSION ".sieve"

struct sieve_data {
    unsigned rowid;
    time_t creationdate;
    time_t lastupdated;
    const char *mailbox;
    uint32_t imap_uid;
    modseq_t modseq;
    modseq_t createdmodseq;
    const char *id;
    const char *name;
    const char *contentid;
    unsigned isactive;
    int alive;
};

typedef int sieve_cb_t(void *rock, struct sieve_data *sdata);

/* prepare for sieve operations in this process */
int sievedb_init(void);

/* done with all sieve operations for this process */
int sievedb_done(void);

/* get a database handle corresponding to userid */
struct sieve_db *sievedb_open_userid(const char *userid);

/* get a database handle corresponding to mailbox */
struct sieve_db *sievedb_open_mailbox(struct mailbox *mailbox);

/* close this handle */
int sievedb_close(struct sieve_db *sievedb);

/* lookup an entry from 'sievedb' by script name
   (optionally inside a transaction for updates) */
int sievedb_lookup_name(struct sieve_db *sievedb, const char *name,
                        struct sieve_data **result, int tombstones);

/* lookup an entry from 'sievedb' by id
   (optionally inside a transaction for updates) */
int sievedb_lookup_id(struct sieve_db *sievedb, const char *id,
                      struct sieve_data **result, int tombstones);

/* lookup an entry from 'sievedb' by IMAP uid
   (optionally inside a transaction for updates) */
int sievedb_lookup_imapuid(struct sieve_db *sievedb, int uid,
                           struct sieve_data **result, int tombstones);

int sievedb_lookup_active(struct sieve_db *sievedb,
                          struct sieve_data **result);

/* process each entry in 'sievedb' with cb() */
int sievedb_foreach(struct sieve_db *sievedb,
                    int (*cb)(void *rock, struct sieve_data *data),
                    void *rock);

/* write an entry to 'sievedb' */
int sievedb_write(struct sieve_db *sievedb, struct sieve_data *sdata);

/* delete an entry from 'sievedb' */
int sievedb_delete(struct sieve_db *sievedb, unsigned rowid);

/* delete all entries for 'mailbox' from 'sievedb' */
int sievedb_delmbox(struct sieve_db *sievedb);

/* begin transaction */
int sievedb_begin(struct sieve_db *sievedb);

/* commit transaction */
int sievedb_commit(struct sieve_db *sievedb);

/* abort transaction */
int sievedb_abort(struct sieve_db *sievedb);

/* Process each entry for 'sievedb' with a modseq higher than oldmodseq,
 * in ascending order of modseq.
 * If max_records is positive, only call cb for at most this entries. */
int sievedb_get_updates(struct sieve_db *sievedb, modseq_t oldmodseq,
                        int max_records, sieve_cb_t *cb, void *rock);

/* count number of scripts */
int sievedb_count(struct sieve_db *sievedb, int *count);

int sieve_script_store(struct mailbox *mailbox, struct sieve_data *sdata,
                       const struct buf *content);

int sieve_script_activate(struct mailbox *mailbox, struct sieve_data *sdata);

int sieve_script_remove(struct mailbox *mailbox, struct sieve_data *sdata);

int sieve_script_rename(struct mailbox *mailbox,
                        struct sieve_data *sdata, const char *newname);

int sieve_script_fetch(struct mailbox *mailbox,
                       const struct sieve_data *sdata, struct buf *content);

int sieve_ensure_folder(const char *userid, struct mailbox **mailboxptr,
                        int silent);

int sieve_script_rebuild(const char *userid,
                         const char *sievedir, const char *script);

/* calculate a mailbox name */
char *sieve_mboxname(const char *userid);

#endif /* SIEVE_DB_H */
