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/*
* Handle friend requests.
*/
/*
* Copyright © 2016-2017 The TokTok team.
* Copyright © 2014 Tox project.
*
* This file is part of Tox, the free peer to peer instant messenger.
*
* Tox is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Tox 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Tox. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef FRIEND_REQUESTS_H
#define FRIEND_REQUESTS_H
#include "friend_connection.h"
#define MAX_FRIEND_REQUEST_DATA_SIZE (ONION_CLIENT_MAX_DATA_SIZE - (1 + sizeof(uint32_t)))
typedef struct {
uint32_t nospam;
void (*handle_friendrequest)(void *, const uint8_t *, const uint8_t *, size_t, void *);
uint8_t handle_friendrequest_isset;
void *handle_friendrequest_object;
int (*filter_function)(const uint8_t *, void *);
void *filter_function_userdata;
/* NOTE: The following is just a temporary fix for the multiple friend requests received at the same time problem.
* TODO(irungentoo): Make this better (This will most likely tie in with the way we will handle spam.)
*/
#define MAX_RECEIVED_STORED 32
uint8_t received_requests[MAX_RECEIVED_STORED][CRYPTO_PUBLIC_KEY_SIZE];
uint16_t received_requests_index;
} Friend_Requests;
/* Set and get the nospam variable used to prevent one type of friend request spam. */
void set_nospam(Friend_Requests *fr, uint32_t num);
uint32_t get_nospam(const Friend_Requests *fr);
/* Remove real_pk from received_requests list.
*
* return 0 if it removed it successfully.
* return -1 if it didn't find it.
*/
int remove_request_received(Friend_Requests *fr, const uint8_t *real_pk);
/* Set the function that will be executed when a friend request for us is received.
* Function format is function(uint8_t * public_key, uint8_t * data, size_t length, void * userdata)
*/
void callback_friendrequest(Friend_Requests *fr, void (*function)(void *, const uint8_t *, const uint8_t *, size_t,
void *), void *object);
/* Set the function used to check if a friend request should be displayed to the user or not.
* Function format is int function(uint8_t * public_key, void * userdata)
* It must return 0 if the request is ok (anything else if it is bad.)
*/
void set_filter_function(Friend_Requests *fr, int (*function)(const uint8_t *, void *), void *userdata);
/* Sets up friendreq packet handlers. */
void friendreq_init(Friend_Requests *fr, Friend_Connections *fr_c);
#endif
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