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/* group_chats.h
*
* An implementation of massive text only group chats.
*
*
* 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 GROUP_CHATS_H
#define GROUP_CHATS_H
#include "net_crypto.h"
typedef struct Assoc Assoc;
#define MAX_NICK_BYTES 128
typedef struct {
uint8_t client_id[crypto_box_PUBLICKEYBYTES];
uint64_t pingid;
uint64_t last_pinged;
IP_Port ping_via;
uint64_t last_recv;
uint64_t last_recv_msgping;
uint32_t last_message_number;
uint8_t nick[MAX_NICK_BYTES];
uint16_t nick_len;
} Group_Peer;
typedef struct {
uint8_t client_id[crypto_box_PUBLICKEYBYTES];
IP_Port ip_port;
uint64_t last_recv;
} Group_Close;
#define GROUP_CLOSE_CONNECTIONS 6
typedef struct Group_Chat {
Networking_Core *net;
uint8_t self_public_key[crypto_box_PUBLICKEYBYTES];
uint8_t self_secret_key[crypto_box_SECRETKEYBYTES];
Group_Peer *group;
Group_Close close[GROUP_CLOSE_CONNECTIONS];
uint32_t numpeers;
uint32_t message_number;
void (*group_message)(struct Group_Chat *m, int, uint8_t *, uint16_t, void *);
void *group_message_userdata;
void (*peer_namelistchange)(struct Group_Chat *m, int peer, uint8_t change, void *);
void *group_namelistchange_userdata;
uint64_t last_sent_ping;
uint8_t nick[MAX_NICK_BYTES];
uint16_t nick_len;
uint64_t last_sent_nick;
Assoc *assoc;
} Group_Chat;
#define GROUP_CHAT_PING 0
#define GROUP_CHAT_NEW_PEER 16
#define GROUP_CHAT_QUIT 24
#define GROUP_CHAT_PEER_NICK 48
#define GROUP_CHAT_CHAT_MESSAGE 64
/* Copy the name of peernum to name.
* name must be at least MAX_NICK_BYTES long.
*
* return length of name if success
* return -1 if failure
*/
int group_peername(Group_Chat *chat, int peernum, uint8_t *name);
/*
* Set callback function for chat messages.
*
* format of function is: function(Group_Chat *chat, peer number, message, message length, userdata)
*/
void callback_groupmessage(Group_Chat *chat, void (*function)(Group_Chat *chat, int, uint8_t *, uint16_t, void *),
void *userdata);
/*
* Set callback function for peer name list changes.
*
* It gets called every time the name list changes(new peer/name, deleted peer)
*
* format of function is: function(Group_Chat *chat, userdata)
*/
typedef enum {
CHAT_CHANGE_PEER_ADD,
CHAT_CHANGE_PEER_DEL,
CHAT_CHANGE_PEER_NAME,
} CHAT_CHANGE;
void callback_namelistchange(Group_Chat *chat, void (*function)(Group_Chat *chat, int peer, uint8_t change, void *), void *userdata);
/*
* Send a message to the group.
*
* returns the number of peers it has sent it to.
*/
uint32_t group_sendmessage(Group_Chat *chat, uint8_t *message, uint32_t length);
/*
* Set our nick for this group.
*
* returns -1 on failure, 0 on success.
*/
int set_nick(Group_Chat *chat, uint8_t *nick, uint16_t nick_len);
/*
* Tell everyone about a new peer (a person we are inviting for example.)
*
*/
uint32_t group_newpeer(Group_Chat *chat, uint8_t *client_id);
/* Create a new group chat.
*
* Returns a new group chat instance if success.
*
* Returns a NULL pointer if fail.
*/
Group_Chat *new_groupchat(Networking_Core *net);
/* Return the number of peers in the group chat.
*/
uint32_t group_numpeers(Group_Chat *chat);
/* List all the peers in the group chat.
*
* Copies the names of the peers to the name[length][MAX_NICK_BYTES] array.
*
* returns the number of peers.
*/
uint32_t group_client_names(Group_Chat *chat, uint8_t names[][MAX_NICK_BYTES], uint16_t length);
/* Kill a group chat
*
* Frees the memory and everything.
*/
void kill_groupchat(Group_Chat *chat);
/*
* This is the main loop.
*/
void do_groupchat(Group_Chat *chat);
/* if we receive a group chat packet we call this function so it can be handled.
return 0 if packet is handled correctly.
return 1 if it didn't handle the packet or if the packet was shit. */
int handle_groupchatpacket(Group_Chat *chat, IP_Port source, uint8_t *packet, uint32_t length);
void chat_bootstrap(Group_Chat *chat, IP_Port ip_port, uint8_t *client_id);
void chat_bootstrap_nonlazy(Group_Chat *chat, IP_Port ip_port, uint8_t *client_id);
#endif
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