mirror of
https://github.com/irungentoo/toxcore.git
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746 lines
25 KiB
C
746 lines
25 KiB
C
/* Messenger.c
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*
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* An implementation of a simple text chat only messenger on the tox network core.
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*
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* Copyright (C) 2013 Tox project All Rights Reserved.
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*
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* This file is part of Tox.
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*
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* Tox is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Tox is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Tox. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "Messenger.h"
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#define MIN(a,b) (((a)<(b))?(a):(b))
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typedef struct {
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uint8_t client_id[CLIENT_ID_SIZE];
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int crypt_connection_id;
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uint64_t friend_request_id; /* id of the friend request corresponding to the current friend request to the current friend. */
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uint8_t status; /* 0 if no friend, 1 if added, 2 if friend request sent, 3 if confirmed friend, 4 if online. */
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uint8_t info[MAX_DATA_SIZE]; /* the data that is sent during the friend requests we do */
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uint8_t name[MAX_NAME_LENGTH];
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uint8_t name_sent; /* 0 if we didn't send our name to this friend 1 if we have. */
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uint8_t *statusmessage;
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uint16_t statusmessage_length;
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uint8_t statusmessage_sent;
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USERSTATUS userstatus;
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uint8_t userstatus_sent;
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uint16_t info_size; /* length of the info */
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uint32_t message_id; /* a semi-unique id used in read receipts */
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uint8_t receives_read_receipts; /* shall we send read receipts to this person? */
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} Friend;
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uint8_t self_public_key[crypto_box_PUBLICKEYBYTES];
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static uint8_t self_name[MAX_NAME_LENGTH];
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static uint16_t self_name_length;
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static uint8_t *self_statusmessage;
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static uint16_t self_statusmessage_len;
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static USERSTATUS self_userstatus;
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static Friend *friendlist;
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static uint32_t numfriends;
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/* 1 if we are online
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0 if we are offline
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static uint8_t online; */
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/* set the size of the friend list to numfriends
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return -1 if realloc fails */
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int realloc_friendlist(uint32_t num) {
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Friend *newfriendlist = realloc(friendlist, num*sizeof(Friend));
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if (newfriendlist == NULL)
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return -1;
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memset(&newfriendlist[num-1], 0, sizeof(Friend));
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friendlist = newfriendlist;
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return 0;
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}
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/* return the friend id associated to that public key.
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return -1 if no such friend */
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int getfriend_id(uint8_t *client_id)
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{
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uint32_t i;
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for (i = 0; i < numfriends; ++i) {
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if (friendlist[i].status > 0)
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if (memcmp(client_id, friendlist[i].client_id, crypto_box_PUBLICKEYBYTES) == 0)
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return i;
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}
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return -1;
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}
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/* copies the public key associated to that friend id into client_id buffer.
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make sure that client_id is of size CLIENT_ID_SIZE.
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return 0 if success
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return -1 if failure. */
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int getclient_id(int friend_id, uint8_t *client_id)
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{
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if (friend_id >= numfriends || friend_id < 0)
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return -1;
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if (friendlist[friend_id].status > 0) {
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memcpy(client_id, friendlist[friend_id].client_id, CLIENT_ID_SIZE);
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return 0;
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}
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return -1;
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}
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/*
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* add a friend
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* set the data that will be sent along with friend request
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* client_id is the client id of the friend
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* data is the data and length is the length
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* returns the friend number if success
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* return FA_TOOLONG if message length is too long
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* return FAERR_NOMESSAGE if no message (message length must be >= 1 byte)
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* return FAERR_OWNKEY if user's own key
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* return FAERR_ALREADYSENT if friend request already sent or already a friend
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* return FAERR_UNKNOWN for unknown error
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*/
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int m_addfriend(uint8_t *client_id, uint8_t *data, uint16_t length)
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{
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if (length >= (MAX_DATA_SIZE - crypto_box_PUBLICKEYBYTES
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- crypto_box_NONCEBYTES - crypto_box_BOXZEROBYTES
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+ crypto_box_ZEROBYTES))
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return FAERR_TOOLONG;
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if (length < 1)
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return FAERR_NOMESSAGE;
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if (memcmp(client_id, self_public_key, crypto_box_PUBLICKEYBYTES) == 0)
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return FAERR_OWNKEY;
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if (getfriend_id(client_id) != -1)
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return FAERR_ALREADYSENT;
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/* resize the friend list if necessary */
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realloc_friendlist(numfriends + 1);
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uint32_t i;
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for (i = 0; i <= numfriends; ++i) {
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if (friendlist[i].status == NOFRIEND) {
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DHT_addfriend(client_id);
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friendlist[i].status = FRIEND_ADDED;
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friendlist[i].crypt_connection_id = -1;
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friendlist[i].friend_request_id = -1;
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memcpy(friendlist[i].client_id, client_id, CLIENT_ID_SIZE);
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friendlist[i].statusmessage = calloc(1, 1);
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friendlist[i].statusmessage_length = 1;
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friendlist[i].userstatus = USERSTATUS_NONE;
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memcpy(friendlist[i].info, data, length);
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friendlist[i].info_size = length;
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friendlist[i].message_id = 0;
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friendlist[i].receives_read_receipts = 1; /* default: YES */
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++numfriends;
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return i;
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}
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}
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return FAERR_UNKNOWN;
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}
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int m_addfriend_norequest(uint8_t * client_id)
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{
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if (getfriend_id(client_id) != -1)
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return -1;
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/* resize the friend list if necessary */
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realloc_friendlist(numfriends + 1);
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uint32_t i;
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for (i = 0; i <= numfriends; ++i) {
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if(friendlist[i].status == NOFRIEND) {
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DHT_addfriend(client_id);
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friendlist[i].status = FRIEND_REQUESTED;
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friendlist[i].crypt_connection_id = -1;
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friendlist[i].friend_request_id = -1;
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memcpy(friendlist[i].client_id, client_id, CLIENT_ID_SIZE);
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friendlist[i].statusmessage = calloc(1, 1);
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friendlist[i].statusmessage_length = 1;
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friendlist[i].userstatus = USERSTATUS_NONE;
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friendlist[i].message_id = 0;
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friendlist[i].receives_read_receipts = 1; /* default: YES */
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++numfriends;
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return i;
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}
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}
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return -1;
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}
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/* remove a friend
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return 0 if success
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return -1 if failure */
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int m_delfriend(int friendnumber)
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{
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if (friendnumber >= numfriends || friendnumber < 0)
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return -1;
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DHT_delfriend(friendlist[friendnumber].client_id);
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crypto_kill(friendlist[friendnumber].crypt_connection_id);
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free(friendlist[friendnumber].statusmessage);
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memset(&friendlist[friendnumber], 0, sizeof(Friend));
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uint32_t i;
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for (i = numfriends; i != 0; --i) {
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if (friendlist[i-1].status != NOFRIEND)
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break;
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}
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numfriends = i;
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realloc_friendlist(numfriends + 1);
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return 0;
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}
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/* return FRIEND_ONLINE if friend is online
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return FRIEND_CONFIRMED if friend is confirmed
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return FRIEND_REQUESTED if the friend request was sent
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return FRIEND_ADDED if the friend was added
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return NOFRIEND if there is no friend with that number */
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int m_friendstatus(int friendnumber)
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{
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if (friendnumber < 0 || friendnumber >= numfriends)
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return NOFRIEND;
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return friendlist[friendnumber].status;
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}
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/* send a text chat message to an online friend
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return the message id if packet was successfully put into the send queue
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return 0 if it was not */
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uint32_t m_sendmessage(int friendnumber, uint8_t *message, uint32_t length)
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{
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if (friendnumber < 0 || friendnumber >= numfriends)
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return 0;
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uint32_t msgid = ++friendlist[friendnumber].message_id;
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if (msgid == 0)
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msgid = 1; /* otherwise, false error */
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return m_sendmessage_withid(friendnumber, msgid, message, length);
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}
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uint32_t m_sendmessage_withid(int friendnumber, uint32_t theid, uint8_t *message, uint32_t length)
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{
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if (friendnumber < 0 || friendnumber >= numfriends)
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return 0;
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if (length >= (MAX_DATA_SIZE - sizeof(theid)) || friendlist[friendnumber].status != FRIEND_ONLINE)
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/* this does not mean the maximum message length is MAX_DATA_SIZE - 1, it is actually 17 bytes less. */
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return 0;
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uint8_t temp[MAX_DATA_SIZE];
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temp[0] = PACKET_ID_MESSAGE;
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theid = htonl(theid);
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memcpy(temp + 1, &theid, sizeof(theid));
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memcpy(temp + 1 + sizeof(theid), message, length);
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return write_cryptpacket(friendlist[friendnumber].crypt_connection_id, temp, length + 1 + sizeof(theid));
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}
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/* send a name packet to friendnumber
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length is the length with the NULL terminator*/
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static int m_sendname(int friendnumber, uint8_t * name, uint16_t length)
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{
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if(length > MAX_NAME_LENGTH || length == 0)
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return 0;
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uint8_t temp[MAX_NAME_LENGTH + 1];
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memcpy(temp + 1, name, length);
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temp[0] = PACKET_ID_NICKNAME;
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return write_cryptpacket(friendlist[friendnumber].crypt_connection_id, temp, length + 1);
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}
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/* set the name of a friend
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return 0 if success
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return -1 if failure */
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static int setfriendname(int friendnumber, uint8_t * name)
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{
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if (friendnumber >= numfriends || friendnumber < 0)
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return -1;
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memcpy(friendlist[friendnumber].name, name, MAX_NAME_LENGTH);
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return 0;
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}
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/* Set our nickname
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name must be a string of maximum MAX_NAME_LENGTH length.
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length must be at least 1 byte
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length is the length of name with the NULL terminator
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return 0 if success
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return -1 if failure */
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int setname(uint8_t * name, uint16_t length)
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{
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if (length > MAX_NAME_LENGTH || length == 0)
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return -1;
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memcpy(self_name, name, length);
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self_name_length = length;
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uint32_t i;
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for (i = 0; i < numfriends; ++i)
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friendlist[i].name_sent = 0;
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return 0;
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}
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/* get our nickname
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put it in name
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name needs to be a valid memory location with a size of at least MAX_NAME_LENGTH bytes.
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return the length of the name */
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uint16_t getself_name(uint8_t *name)
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{
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memcpy(name, self_name, self_name_length);
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return self_name_length;
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}
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/* get name of friendnumber
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put it in name
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name needs to be a valid memory location with a size of at least MAX_NAME_LENGTH bytes.
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return 0 if success
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return -1 if failure */
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int getname(int friendnumber, uint8_t * name)
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{
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if (friendnumber >= numfriends || friendnumber < 0)
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return -1;
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memcpy(name, friendlist[friendnumber].name, MAX_NAME_LENGTH);
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return 0;
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}
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int m_set_statusmessage(uint8_t *status, uint16_t length)
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{
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if (length > MAX_STATUSMESSAGE_LENGTH)
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return -1;
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uint8_t *newstatus = calloc(length, 1);
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memcpy(newstatus, status, length);
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free(self_statusmessage);
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self_statusmessage = newstatus;
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self_statusmessage_len = length;
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uint32_t i;
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for (i = 0; i < numfriends; ++i)
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friendlist[i].statusmessage_sent = 0;
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return 0;
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}
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int m_set_userstatus(USERSTATUS status)
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{
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if (status >= USERSTATUS_INVALID) {
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return -1;
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}
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self_userstatus = status;
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uint32_t i;
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for (i = 0; i < numfriends; ++i)
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friendlist[i].userstatus_sent = 0;
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return 0;
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}
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/* return the size of friendnumber's user status
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guaranteed to be at most MAX_STATUSMESSAGE_LENGTH */
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int m_get_statusmessage_size(int friendnumber)
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{
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if (friendnumber >= numfriends || friendnumber < 0)
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return -1;
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return friendlist[friendnumber].statusmessage_length;
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}
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/* copy the user status of friendnumber into buf, truncating if needed to maxlen
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bytes, use m_get_statusmessage_size to find out how much you need to allocate */
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int m_copy_statusmessage(int friendnumber, uint8_t * buf, uint32_t maxlen)
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{
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if (friendnumber >= numfriends || friendnumber < 0)
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return -1;
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memset(buf, 0, maxlen);
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memcpy(buf, friendlist[friendnumber].statusmessage, MIN(maxlen, MAX_STATUSMESSAGE_LENGTH) - 1);
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return 0;
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}
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int m_copy_self_statusmessage(uint8_t * buf, uint32_t maxlen)
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{
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memset(buf, 0, maxlen);
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memcpy(buf, self_statusmessage, MIN(maxlen, MAX_STATUSMESSAGE_LENGTH) - 1);
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return 0;
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}
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USERSTATUS m_get_userstatus(int friendnumber)
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{
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if (friendnumber >= numfriends || friendnumber < 0)
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return USERSTATUS_INVALID;
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USERSTATUS status = friendlist[friendnumber].userstatus;
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if (status >= USERSTATUS_INVALID) {
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status = USERSTATUS_NONE;
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}
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return status;
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}
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USERSTATUS m_get_self_userstatus(void)
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{
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return self_userstatus;
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}
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static int send_statusmessage(int friendnumber, uint8_t * status, uint16_t length)
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{
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uint8_t *thepacket = malloc(length + 1);
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memcpy(thepacket + 1, status, length);
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thepacket[0] = PACKET_ID_STATUSMESSAGE;
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int written = write_cryptpacket(friendlist[friendnumber].crypt_connection_id, thepacket, length + 1);
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free(thepacket);
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return written;
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}
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static int send_userstatus(int friendnumber, USERSTATUS status)
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{
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uint8_t *thepacket = malloc(1 + 1);
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memcpy(thepacket + 1, &status, 1);
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thepacket[0] = PACKET_ID_USERSTATUS;
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int written = write_cryptpacket(friendlist[friendnumber].crypt_connection_id, thepacket, 1 + 1);
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free(thepacket);
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return written;
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}
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static int set_friend_statusmessage(int friendnumber, uint8_t * status, uint16_t length)
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{
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if (friendnumber >= numfriends || friendnumber < 0)
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return -1;
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uint8_t *newstatus = calloc(length, 1);
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memcpy(newstatus, status, length);
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free(friendlist[friendnumber].statusmessage);
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friendlist[friendnumber].statusmessage = newstatus;
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friendlist[friendnumber].statusmessage_length = length;
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return 0;
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}
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static void set_friend_userstatus(int friendnumber, USERSTATUS status)
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{
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friendlist[friendnumber].userstatus = status;
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}
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/* Sets whether we send read receipts for friendnumber. */
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void m_set_sends_receipts(int friendnumber, int yesno)
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{
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if (yesno != 0 || yesno != 1)
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return;
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if (friendnumber >= numfriends || friendnumber < 0)
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return;
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friendlist[friendnumber].receives_read_receipts = yesno;
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}
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/* static void (*friend_request)(uint8_t *, uint8_t *, uint16_t);
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static uint8_t friend_request_isset = 0; */
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/* set the function that will be executed when a friend request is received. */
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void m_callback_friendrequest(void (*function)(uint8_t *, uint8_t *, uint16_t))
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{
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callback_friendrequest(function);
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}
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static void (*friend_message)(int, uint8_t *, uint16_t);
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static uint8_t friend_message_isset = 0;
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/* set the function that will be executed when a message from a friend is received. */
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void m_callback_friendmessage(void (*function)(int, uint8_t *, uint16_t))
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{
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friend_message = function;
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friend_message_isset = 1;
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}
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static void (*friend_namechange)(int, uint8_t *, uint16_t);
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static uint8_t friend_namechange_isset = 0;
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void m_callback_namechange(void (*function)(int, uint8_t *, uint16_t))
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{
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friend_namechange = function;
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friend_namechange_isset = 1;
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}
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static void (*friend_statusmessagechange)(int, uint8_t *, uint16_t);
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static uint8_t friend_statusmessagechange_isset = 0;
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void m_callback_statusmessage(void (*function)(int, uint8_t *, uint16_t))
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{
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friend_statusmessagechange = function;
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friend_statusmessagechange_isset = 1;
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}
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static void (*friend_userstatuschange)(int, USERSTATUS);
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static uint8_t friend_userstatuschange_isset = 0;
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void m_callback_userstatus(void (*function)(int, USERSTATUS))
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{
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friend_userstatuschange = function;
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friend_userstatuschange_isset = 1;
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}
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static void (*read_receipt)(int, uint32_t);
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static uint8_t read_receipt_isset = 0;
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void m_callback_read_receipt(void (*function)(int, uint32_t))
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{
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read_receipt = function;
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read_receipt_isset = 1;
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}
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#define PORT 33445
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/* run this at startup */
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int initMessenger(void)
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{
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new_keys();
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m_set_statusmessage((uint8_t*)"Online", sizeof("Online"));
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initNetCrypto();
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IP ip;
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ip.i = 0;
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if(init_networking(ip,PORT) == -1)
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return -1;
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return 0;
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}
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|
|
|
//TODO: make this function not suck.
|
|
static void doFriends(void)
|
|
{
|
|
/* TODO: add incoming connections and some other stuff. */
|
|
uint32_t i;
|
|
int len;
|
|
uint8_t temp[MAX_DATA_SIZE];
|
|
for (i = 0; i < numfriends; ++i) {
|
|
if (friendlist[i].status == FRIEND_ADDED) {
|
|
int fr = send_friendrequest(friendlist[i].client_id, friendlist[i].info, friendlist[i].info_size);
|
|
if (fr == 0) /* TODO: This needs to be fixed so that it sends the friend requests a couple of times in case of packet loss */
|
|
friendlist[i].status = FRIEND_REQUESTED;
|
|
else if (fr > 0)
|
|
friendlist[i].status = FRIEND_REQUESTED;
|
|
}
|
|
if (friendlist[i].status == FRIEND_REQUESTED || friendlist[i].status == FRIEND_CONFIRMED) { /* friend is not online */
|
|
if (friendlist[i].status == FRIEND_REQUESTED) {
|
|
if (friendlist[i].friend_request_id + 10 < unix_time()) { /*I know this is hackish but it should work.*/
|
|
send_friendrequest(friendlist[i].client_id, friendlist[i].info, friendlist[i].info_size);
|
|
friendlist[i].friend_request_id = unix_time();
|
|
}
|
|
}
|
|
IP_Port friendip = DHT_getfriendip(friendlist[i].client_id);
|
|
switch (is_cryptoconnected(friendlist[i].crypt_connection_id)) {
|
|
case 0:
|
|
if (friendip.ip.i > 1)
|
|
friendlist[i].crypt_connection_id = crypto_connect(friendlist[i].client_id, friendip);
|
|
break;
|
|
case 3: /* Connection is established */
|
|
friendlist[i].status = FRIEND_ONLINE;
|
|
break;
|
|
case 4:
|
|
crypto_kill(friendlist[i].crypt_connection_id);
|
|
friendlist[i].crypt_connection_id = -1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
while (friendlist[i].status == FRIEND_ONLINE) { /* friend is online */
|
|
if (friendlist[i].name_sent == 0) {
|
|
if (m_sendname(i, self_name, self_name_length))
|
|
friendlist[i].name_sent = 1;
|
|
}
|
|
if (friendlist[i].statusmessage_sent == 0) {
|
|
if (send_statusmessage(i, self_statusmessage, self_statusmessage_len))
|
|
friendlist[i].statusmessage_sent = 1;
|
|
}
|
|
if (friendlist[i].userstatus_sent == 0) {
|
|
if (send_userstatus(i, self_userstatus))
|
|
friendlist[i].userstatus_sent = 1;
|
|
}
|
|
len = read_cryptpacket(friendlist[i].crypt_connection_id, temp);
|
|
if (len > 0) {
|
|
switch (temp[0]) {
|
|
case PACKET_ID_NICKNAME: {
|
|
if (len >= MAX_NAME_LENGTH + 1 || len == 1)
|
|
break;
|
|
if(friend_namechange_isset)
|
|
friend_namechange(i, temp + 1, len - 1);
|
|
memcpy(friendlist[i].name, temp + 1, len - 1);
|
|
friendlist[i].name[len - 2] = 0; /* make sure the NULL terminator is present. */
|
|
break;
|
|
}
|
|
case PACKET_ID_STATUSMESSAGE: {
|
|
if (len < 2)
|
|
break;
|
|
uint8_t *status = calloc(MIN(len - 1, MAX_STATUSMESSAGE_LENGTH), 1);
|
|
memcpy(status, temp + 1, MIN(len - 1, MAX_STATUSMESSAGE_LENGTH));
|
|
if (friend_statusmessagechange_isset)
|
|
friend_statusmessagechange(i, status, MIN(len - 1, MAX_STATUSMESSAGE_LENGTH));
|
|
set_friend_statusmessage(i, status, MIN(len - 1, MAX_STATUSMESSAGE_LENGTH));
|
|
free(status);
|
|
break;
|
|
}
|
|
case PACKET_ID_USERSTATUS: {
|
|
if (len != 2)
|
|
break;
|
|
USERSTATUS status = temp[1];
|
|
if (friend_userstatuschange_isset)
|
|
friend_userstatuschange(i, status);
|
|
set_friend_userstatus(i, status);
|
|
break;
|
|
}
|
|
case PACKET_ID_MESSAGE: {
|
|
if (friendlist[i].receives_read_receipts) {
|
|
uint8_t *thepacket = malloc(5);
|
|
thepacket[0] = PACKET_ID_RECEIPT;
|
|
memcpy(thepacket + 1, temp + 1, 4);
|
|
write_cryptpacket(friendlist[i].crypt_connection_id, thepacket, 5);
|
|
free(thepacket);
|
|
}
|
|
if (friend_message_isset)
|
|
(*friend_message)(i, temp + 5, len - 5);
|
|
break;
|
|
}
|
|
case PACKET_ID_RECEIPT: {
|
|
uint32_t msgid;
|
|
if (len < 1 + sizeof(msgid))
|
|
break;
|
|
memcpy(&msgid, temp + 1, sizeof(msgid));
|
|
msgid = ntohl(msgid);
|
|
if (read_receipt_isset)
|
|
(*read_receipt)(i, msgid);
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
if (is_cryptoconnected(friendlist[i].crypt_connection_id) == 4) { /* if the connection timed out, kill it */
|
|
crypto_kill(friendlist[i].crypt_connection_id);
|
|
friendlist[i].crypt_connection_id = -1;
|
|
friendlist[i].status = FRIEND_CONFIRMED;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void doInbound(void)
|
|
{
|
|
uint8_t secret_nonce[crypto_box_NONCEBYTES];
|
|
uint8_t public_key[crypto_box_PUBLICKEYBYTES];
|
|
uint8_t session_key[crypto_box_PUBLICKEYBYTES];
|
|
int inconnection = crypto_inbound(public_key, secret_nonce, session_key);
|
|
if (inconnection != -1) {
|
|
int friend_id = getfriend_id(public_key);
|
|
if (friend_id != -1) {
|
|
crypto_kill(friendlist[friend_id].crypt_connection_id);
|
|
friendlist[friend_id].crypt_connection_id =
|
|
accept_crypto_inbound(inconnection, public_key, secret_nonce, session_key);
|
|
|
|
friendlist[friend_id].status = FRIEND_CONFIRMED;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*Interval in seconds between LAN discovery packet sending*/
|
|
#define LAN_DISCOVERY_INTERVAL 60
|
|
|
|
static uint64_t last_LANdiscovery;
|
|
|
|
/*Send a LAN discovery packet every LAN_DISCOVERY_INTERVAL seconds*/
|
|
static void LANdiscovery(void)
|
|
{
|
|
if (last_LANdiscovery + LAN_DISCOVERY_INTERVAL < unix_time()) {
|
|
send_LANdiscovery(htons(PORT));
|
|
last_LANdiscovery = unix_time();
|
|
}
|
|
}
|
|
|
|
|
|
/* the main loop that needs to be run at least 200 times per second. */
|
|
void doMessenger(void)
|
|
{
|
|
IP_Port ip_port;
|
|
uint8_t data[MAX_UDP_PACKET_SIZE];
|
|
uint32_t length;
|
|
while (receivepacket(&ip_port, data, &length) != -1) {
|
|
#ifdef DEBUG
|
|
/* if(rand() % 3 != 1) //simulate packet loss */
|
|
/* { */
|
|
if (DHT_handlepacket(data, length, ip_port) && LosslessUDP_handlepacket(data, length, ip_port) &&
|
|
friendreq_handlepacket(data, length, ip_port) && LANdiscovery_handlepacket(data, length, ip_port))
|
|
/* if packet is discarded */
|
|
printf("Received unhandled packet with length: %u\n", length);
|
|
else
|
|
printf("Received handled packet with length: %u\n", length);
|
|
/* } */
|
|
printf("Status: %u %u %u\n",friendlist[0].status ,is_cryptoconnected(friendlist[0].crypt_connection_id), friendlist[0].crypt_connection_id);
|
|
#else
|
|
DHT_handlepacket(data, length, ip_port);
|
|
LosslessUDP_handlepacket(data, length, ip_port);
|
|
friendreq_handlepacket(data, length, ip_port);
|
|
LANdiscovery_handlepacket(data, length, ip_port);
|
|
#endif
|
|
|
|
}
|
|
doDHT();
|
|
doLossless_UDP();
|
|
doNetCrypto();
|
|
doInbound();
|
|
doFriends();
|
|
LANdiscovery();
|
|
}
|
|
|
|
/* returns the size of the messenger data (for saving) */
|
|
uint32_t Messenger_size(void)
|
|
{
|
|
return crypto_box_PUBLICKEYBYTES + crypto_box_SECRETKEYBYTES
|
|
+ sizeof(uint32_t) + DHT_size() + sizeof(uint32_t) + sizeof(Friend) * numfriends;
|
|
}
|
|
|
|
/* save the messenger in data of size Messenger_size() */
|
|
void Messenger_save(uint8_t *data)
|
|
{
|
|
save_keys(data);
|
|
data += crypto_box_PUBLICKEYBYTES + crypto_box_SECRETKEYBYTES;
|
|
uint32_t size = DHT_size();
|
|
memcpy(data, &size, sizeof(size));
|
|
data += sizeof(size);
|
|
DHT_save(data);
|
|
data += size;
|
|
size = sizeof(Friend) * numfriends;
|
|
memcpy(data, &size, sizeof(size));
|
|
data += sizeof(size);
|
|
memcpy(data, friendlist, sizeof(Friend) * numfriends);
|
|
}
|
|
|
|
/* load the messenger from data of size length. */
|
|
int Messenger_load(uint8_t * data, uint32_t length)
|
|
{
|
|
if (length == ~0)
|
|
return -1;
|
|
if (length < crypto_box_PUBLICKEYBYTES + crypto_box_SECRETKEYBYTES + sizeof(uint32_t) * 2)
|
|
return -1;
|
|
length -= crypto_box_PUBLICKEYBYTES + crypto_box_SECRETKEYBYTES + sizeof(uint32_t) * 2;
|
|
load_keys(data);
|
|
data += crypto_box_PUBLICKEYBYTES + crypto_box_SECRETKEYBYTES;
|
|
uint32_t size;
|
|
memcpy(&size, data, sizeof(size));
|
|
data += sizeof(size);
|
|
|
|
if (length < size)
|
|
return -1;
|
|
length -= size;
|
|
if (DHT_load(data, size) == -1)
|
|
return -1;
|
|
data += size;
|
|
memcpy(&size, data, sizeof(size));
|
|
data += sizeof(size);
|
|
if (length != size || length % sizeof(Friend) != 0)
|
|
return -1;
|
|
|
|
Friend * temp = malloc(size);
|
|
memcpy(temp, data, size);
|
|
|
|
uint16_t num = size / sizeof(Friend);
|
|
|
|
uint32_t i;
|
|
for (i = 0; i < num; ++i) {
|
|
if(temp[i].status != 0) {
|
|
int fnum = m_addfriend_norequest(temp[i].client_id);
|
|
setfriendname(fnum, temp[i].name);
|
|
/* set_friend_statusmessage(fnum, temp[i].statusmessage, temp[i].statusmessage_length); */
|
|
}
|
|
}
|
|
free(temp);
|
|
return 0;
|
|
}
|