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/*
   This file is part of GNUnet.
   Copyright (C) 2012-2015 GNUnet e.V.

   GNUnet is free software: you can redistribute it and/or modify it
   under the terms of the GNU Affero General Public License as published
   by the Free Software Foundation, either version 3 of the License,
   or (at your option) any later version.

   GNUnet is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Affero General Public License for more details.

   You should have received a copy of the GNU Affero General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.

   SPDX-License-Identifier: AGPL3.0-or-later
   */

/**
 * @author Martin Schanzenbach
 * @file src/reclaim/gnunet-service-reclaim_tickets.h
 * @brief reclaim tickets
 *
 */

#ifndef GNUNET_SERVICE_RECLAIM_TICKETS_H
#define GNUNET_SERVICE_RECLAIM_TICKETS_H

#include "platform.h"

#include "gnunet_util_lib.h"

#include "gnunet_constants.h"
#include "gnunet_gns_service.h"
#include "gnunet_gnsrecord_lib.h"
#include "gnunet_namestore_service.h"
#include "gnunet_protocols.h"
#include "gnunet_reclaim_attribute_lib.h"
#include "gnunet_reclaim_service.h"
#include "gnunet_signatures.h"
#include "gnunet_statistics_service.h"
#include "reclaim.h"

struct RECLAIM_TICKETS_Iterator;
struct RECLAIM_TICKETS_ConsumeHandle;
struct RECLAIM_TICKETS_RevokeHandle;


struct TicketRecordsEntry
{
  /**
   * DLL
   */
  struct TicketRecordsEntry *next;

  /**
   * DLL
   */
  struct TicketRecordsEntry *prev;

  /**
   * Record count
   */
  unsigned int rd_count;

  /**
   * Data
   */
  char *data;

  /**
   * Data size
   */
  size_t data_size;

  /**
   * Label
   */
  char *label;
};


/**
 * Continuation called with ticket.
 *
 * @param cls closure
 * @param ticket the ticket
 */
typedef void (*RECLAIM_TICKETS_TicketIter) (
    void *cls, struct GNUNET_RECLAIM_Ticket *ticket);


/**
 * Continuation called with ticket.
 *
 * @param cls closure
 * @param ticket the ticket
 * @param success #GNUNET_SYSERR on failure (including timeout/queue
 * drop/failure to validate) #GNUNET_OK on success
 * @param emsg NULL on success, otherwise an error message
 */
typedef void (*RECLAIM_TICKETS_TicketResult) (
    void *cls, struct GNUNET_RECLAIM_Ticket *ticket, int32_t success,
    const char *emsg);


typedef void (*RECLAIM_TICKETS_ConsumeCallback) (
    void *cls, const struct GNUNET_CRYPTO_EcdsaPublicKey *identity,
    const struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *l, int32_t success,
    const char *emsg);


typedef void (*RECLAIM_TICKETS_RevokeCallback) (void *cls, int32_t success);

struct RECLAIM_TICKETS_RevokeHandle *
RECLAIM_TICKETS_revoke (const struct GNUNET_RECLAIM_Ticket *ticket,
                        const struct GNUNET_CRYPTO_EcdsaPrivateKey *identity,
                        RECLAIM_TICKETS_RevokeCallback cb, void *cb_cls);


void
RECLAIM_TICKETS_revoke_cancel (struct RECLAIM_TICKETS_RevokeHandle *rh);


struct RECLAIM_TICKETS_ConsumeHandle *
RECLAIM_TICKETS_consume (const struct GNUNET_CRYPTO_EcdsaPrivateKey *id,
                         const struct GNUNET_RECLAIM_Ticket *ticket,
                         RECLAIM_TICKETS_ConsumeCallback cb, void *cb_cls);

void
RECLAIM_TICKETS_consume_cancel (struct RECLAIM_TICKETS_ConsumeHandle *cth);

void
RECLAIM_TICKETS_issue (const struct GNUNET_CRYPTO_EcdsaPrivateKey *identity,
                       const struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *attrs,
                       const struct GNUNET_CRYPTO_EcdsaPublicKey *audience,
                       RECLAIM_TICKETS_TicketResult cb, void *cb_cls);

void
RECLAIM_TICKETS_iteration_next (struct RECLAIM_TICKETS_Iterator *iter);


void
RECLAIM_TICKETS_iteration_stop (struct RECLAIM_TICKETS_Iterator *iter);


struct RECLAIM_TICKETS_Iterator *
RECLAIM_TICKETS_iteration_start (
    const struct GNUNET_CRYPTO_EcdsaPrivateKey *identity,
    RECLAIM_TICKETS_TicketIter cb, void *cb_cls);


int
RECLAIM_TICKETS_init (const struct GNUNET_CONFIGURATION_Handle *c);

void
RECLAIM_TICKETS_deinit (void);
#endif