/* * Copyright (c) 2014 HÃ¥vard Pettersson * * This file is part of Tox-WeeChat. * * Tox-WeeChat 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-WeeChat 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-WeeChat. If not, see . */ #include #include #include #include #include "twc.h" #include "twc-config.h" #include "twc-utils.h" /** * Convert a hex string to it's binary equivalent of max size bytes. */ void twc_hex2bin(const char *hex, size_t size, char *out) { const char *position = hex; size_t i; for (i = 0; i < size; ++i) { sscanf(position, "%2hhx", &out[i]); position += 2; } } /** * Convert size bytes to a hex string. out must be at lesat size * 2 + 1 * bytes. */ void twc_bin2hex(const uint8_t *bin, size_t size, char *out) { char *position = out; size_t i; for (i = 0; i < size; ++i) { sprintf(position, "%02X", bin[i]); position += 2; } *position = 0; } /** * Return a null-terminated copy of str. Must be freed. */ char * twc_null_terminate(const uint8_t *str, size_t length) { char *str_null = malloc(length + 1); memcpy(str_null, str, length); str_null[length] = 0; return str_null; } /** * Get the null-terminated name of a Tox friend. Must be freed. */ char * twc_get_name_nt(Tox *tox, int32_t friend_number) { size_t length = tox_get_name_size(tox, friend_number); uint8_t name[length]; // if no name, return client ID instead if (!length) return twc_get_friend_id_short(tox, friend_number); tox_get_name(tox, friend_number, name); return twc_null_terminate(name, length); } /** * Return the null-terminated status message of a Tox friend. Must be freed. */ char * twc_get_status_message_nt(Tox *tox, int32_t friend_number) { size_t length = tox_get_status_message_size(tox, friend_number); uint8_t message[length]; tox_get_status_message(tox, friend_number, message, length); return twc_null_terminate(message, length); } /** * Return the name of a group chat peer as a null terminated string. Must be * freed. */ char * twc_get_peer_name_nt(Tox *tox, int32_t group_number, int32_t peer_number) { uint8_t name[TOX_MAX_NAME_LENGTH] = {0}; int length = tox_group_peername(tox, group_number, peer_number, name); if (length >= 0) return twc_null_terminate(name, length); else return ""; } /** * Return the users own name, null-terminated. Must be freed. */ char * twc_get_self_name_nt(Tox *tox) { size_t length = tox_get_self_name_size(tox); uint8_t name[length]; tox_get_self_name(tox, name); return twc_null_terminate(name, length); } /** * Return a friend's Tox ID in short form. Return value must be freed. */ char * twc_get_friend_id_short(Tox *tox, int32_t friend_number) { uint8_t client_id[TOX_CLIENT_ID_SIZE]; tox_get_client_id(tox, friend_number, client_id); size_t short_id_length = weechat_config_integer(twc_config_short_id_size); char *hex_address = malloc(short_id_length + 1); twc_bin2hex(client_id, short_id_length / 2, hex_address); return hex_address; } /** * Reverse the bytes of a 32-bit integer. */ uint32_t twc_uint32_reverse_bytes(uint32_t num) { uint32_t res = 0; res += num & 0xFF; num >>= 8; res <<= 8; res += num & 0xFF; num >>= 8; res <<= 8; res += num & 0xFF; num >>= 8; res <<= 8; res += num & 0xFF; return res; }