314 lines
8.2 KiB
C
314 lines
8.2 KiB
C
/*
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* Copyright (c) 2018 Håvard Pettersson <mail@haavard.me>
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*
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* This file is part of Tox-WeeChat.
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*
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* Tox-WeeChat 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-WeeChat 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-WeeChat. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <tox/tox.h>
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#include <weechat/weechat-plugin.h>
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#include "twc-config.h"
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#include "twc.h"
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#include "twc-utils.h"
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/**
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* Convert a hex string to it's binary equivalent of max size bytes.
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*/
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void
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twc_hex2bin(const char *hex, size_t size, uint8_t *out)
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{
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const char *position = hex;
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size_t i;
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for (i = 0; i < size; ++i)
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{
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sscanf(position, "%2hhx", &out[i]);
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position += 2;
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}
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}
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/**
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* Convert size bytes to a hex string. out must be at lesat size * 2 + 1
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* bytes.
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*/
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void
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twc_bin2hex(const uint8_t *bin, size_t size, char *out)
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{
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char *position = out;
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size_t i;
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for (i = 0; i < size; ++i)
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{
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sprintf(position, "%02X", bin[i]);
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position += 2;
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}
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*position = 0;
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}
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/**
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* Return a null-terminated copy of str. Must be freed.
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*/
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char *
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twc_null_terminate(const uint8_t *str, size_t length)
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{
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char *str_null = malloc(length + 1);
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memcpy(str_null, str, length);
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str_null[length] = 0;
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return str_null;
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}
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/**
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* Get the null-terminated name of a Tox friend. Must be freed.
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*/
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char *
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twc_get_name_nt(Tox *tox, int32_t friend_number)
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{
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TOX_ERR_FRIEND_QUERY err;
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size_t length = tox_friend_get_name_size(tox, friend_number, &err);
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if ((err != TOX_ERR_FRIEND_QUERY_OK) || (length == 0))
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return twc_get_friend_id_short(tox, friend_number);
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uint8_t name[length];
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tox_friend_get_name(tox, friend_number, name, &err);
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return twc_null_terminate(name, length);
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}
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/**
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* Return the null-terminated status message of a Tox friend. Must be freed.
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*/
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char *
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twc_get_status_message_nt(Tox *tox, int32_t friend_number)
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{
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TOX_ERR_FRIEND_QUERY err;
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size_t length =
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tox_friend_get_status_message_size(tox, friend_number, &err);
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if ((err != TOX_ERR_FRIEND_QUERY_OK) || (length == SIZE_MAX))
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{
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char *msg = malloc(1);
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*msg = 0;
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return msg;
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}
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uint8_t message[length];
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tox_friend_get_status_message(tox, friend_number, message, &err);
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return twc_null_terminate(message, length);
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}
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/**
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* Return the name of a group chat peer as a null terminated string. Must be
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* freed.
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*/
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char *
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twc_get_peer_name_nt(Tox *tox, int32_t group_number, int32_t peer_number)
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{
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uint8_t name[TOX_MAX_NAME_LENGTH + 1] = {0};
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TOX_ERR_CONFERENCE_PEER_QUERY err = TOX_ERR_CONFERENCE_PEER_QUERY_OK;
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int length =
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tox_conference_peer_get_name_size(tox, group_number, peer_number, &err);
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if ((err == TOX_ERR_CONFERENCE_PEER_QUERY_OK) &&
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(length <= TOX_MAX_NAME_LENGTH))
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{
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tox_conference_peer_get_name(tox, group_number, peer_number, name,
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&err);
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if (err == TOX_ERR_CONFERENCE_PEER_QUERY_OK)
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return twc_null_terminate(name, length);
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else
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return "<unknown>";
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}
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else
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return "<unknown>";
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}
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/**
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* Return the users own name, null-terminated. Must be freed.
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*/
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char *
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twc_get_self_name_nt(Tox *tox)
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{
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size_t length = tox_self_get_name_size(tox);
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uint8_t name[length];
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tox_self_get_name(tox, name);
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return twc_null_terminate(name, length);
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}
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/**
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* Return a friend's Tox ID in short form. Return value must be freed.
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*/
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char *
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twc_get_friend_id_short(Tox *tox, int32_t friend_number)
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{
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uint8_t client_id[TOX_PUBLIC_KEY_SIZE];
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TOX_ERR_FRIEND_GET_PUBLIC_KEY err;
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size_t short_id_length = weechat_config_integer(twc_config_short_id_size);
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char *hex_address = malloc(short_id_length + 1);
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tox_friend_get_public_key(tox, friend_number, client_id, &err);
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/* return a zero public key on failure */
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if (err != TOX_ERR_FRIEND_GET_PUBLIC_KEY_OK)
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memset(client_id, 0, TOX_PUBLIC_KEY_SIZE);
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twc_bin2hex(client_id, short_id_length / 2, hex_address);
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return hex_address;
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}
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/**
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* Reverse the bytes of a 32-bit integer.
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*/
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uint32_t
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twc_uint32_reverse_bytes(uint32_t num)
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{
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uint32_t res = 0;
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res += num & 0xFF;
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num >>= 8;
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res <<= 8;
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res += num & 0xFF;
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num >>= 8;
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res <<= 8;
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res += num & 0xFF;
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num >>= 8;
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res <<= 8;
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res += num & 0xFF;
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return res;
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}
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/**
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* Fit correct unicode string into max chars. Return number of bytes
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*/
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int
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twc_fit_utf8(const char *str, int max)
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{
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return weechat_utf8_real_pos(str, weechat_utf8_strnlen(str, max));
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}
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/**
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* Enable or disable logging for a WeeChat buffer.
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*/
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int
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twc_set_buffer_logging(struct t_gui_buffer *buffer, bool logging)
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{
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if (!buffer)
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return WEECHAT_RC_ERROR;
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char const *signal;
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if (logging)
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{
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weechat_buffer_set(buffer, "localvar_del_no_log", "");
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signal = "logger_start";
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}
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else
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{
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weechat_buffer_set(buffer, "localvar_set_no_log", "1");
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signal = "logger_stop";
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}
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return weechat_hook_signal_send(signal, WEECHAT_HOOK_SIGNAL_POINTER,
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buffer);
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}
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/**
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* These following twc_tox_err_file_* functions convert enum TOX_ERR_FILE_*
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* error codes to meaningful messages of type char *.
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*/
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char *
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twc_tox_err_file_control(enum TOX_ERR_FILE_CONTROL error)
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{
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char *messages[] = {
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"success",
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"the friend number passed did not designate a valid friend",
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"this client is currently not connected to the friend",
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"no file transfer with the given file number was found for the given friend",
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"a RESUME control was sent, but the file transfer is running normally",
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"A RESUME control was sent, but the file transfer was paused by the other party",
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"a PAUSE control was sent, but the file transfer was already paused",
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"packet queue is full"
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};
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return messages[error];
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}
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char *
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twc_tox_err_file_get(enum TOX_ERR_FILE_GET error)
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{
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char *messages[] = {
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"success",
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"one of the arguments to the function was NULL when it was not expected",
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"the friend number passed did not designate a valid friend",
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"no file transfer with the given number was found for the given friend"
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};
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return messages[error];
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}
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char *
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twc_tox_err_file_seek(enum TOX_ERR_FILE_SEEK error)
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{
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char *messages[] = {
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"success",
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"the friend number passed did not designate a valid friend",
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"the client is currently not connected to the friend",
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"no file transfer with the given file number was found for the given friend",
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"file was not in a state where it could be seeked",
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"seek position was invalid",
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"packet queue is full"
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};
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return messages[error];
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}
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char *
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twc_tox_err_file_send(enum TOX_ERR_FILE_SEND error)
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{
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char *messages[] = {
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"success",
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"one of the arguments of the function was NULL when it was not expected",
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"the friend number passed did not designate a valid friend",
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"this client is currently not connected to the friend",
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"filename lenth exceeded TOX_MAX_FILENAME_LENGTH bytes",
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"too many ongoing transfers"
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};
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return messages[error];
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}
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char *
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twc_tox_err_file_send_chunk(enum TOX_ERR_FILE_SEND_CHUNK error)
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{
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char *messages[] = {
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"success",
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"the length parameter was non-zero, but data was NULL",
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"the friend number passed did not designate a valid friend",
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"this client is currently not connected to the friend",
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"no file transfer with the given file number was found for the given friend",
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"not called from the request chunk callback",
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"attempted to send more or less data than requested",
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"packet queue is full",
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"position parameter was wrong"
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};
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return messages[error];
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}
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