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/* friend_requests.h
*
* Handle friend requests.
*
* Copyright (C) 2013 Tox project All Rights Reserved.
*
* This file is part of Tox.
*
* 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 "onion_client.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 *, uint8_t *, uint8_t *, uint16_t, void *);
uint8_t handle_friendrequest_isset;
void *handle_friendrequest_object;
void *handle_friendrequest_userdata;
int (*filter_function)(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: 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_box_PUBLICKEYBYTES];
uint16_t received_requests_index;
} Friend_Requests;
/* Try to send a friendrequest to peer with public_key.
* data is the data in the request and length is the length.
* Maximum length of data is MAX_FRIEND_REQUEST_DATA_SIZE.
*/
int send_friendrequest(Onion_Client *onion_c, uint8_t *public_key, uint32_t nospam_num, uint8_t *data, uint32_t length);
/* 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(Friend_Requests *fr);
/* Remove client id 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, uint8_t *client_id);
/* 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, uint16_t length, void * userdata)
*/
void callback_friendrequest(Friend_Requests *fr, void (*function)(void *, uint8_t *, uint8_t *, uint16_t, void *),
void *object, void *userdata);
/* 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)(uint8_t *, void *), void *userdata);
/* Sets up friendreq packet handlers. */
void friendreq_init(Friend_Requests *fr, Onion_Client *onion_c);
#endif
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