1295 lines
33 KiB
C++
1295 lines
33 KiB
C++
/*
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Asynchronous WebServer library for Espressif MCUs
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Copyright (c) 2016 Hristo Gochkov. All rights reserved.
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This file is part of the esp8266 core for Arduino environment.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "Arduino.h"
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#include "AsyncWebSocket.h"
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#include <libb64/cencode.h>
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#ifndef ESP8266
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#include "mbedtls/sha1.h"
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#else
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#include <Hash.h>
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#endif
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#define MAX_PRINTF_LEN 64
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size_t webSocketSendFrameWindow(AsyncClient *client){
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if(!client->canSend())
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return 0;
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size_t space = client->space();
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if(space < 9)
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return 0;
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return space - 8;
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}
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size_t webSocketSendFrame(AsyncClient *client, bool final, uint8_t opcode, bool mask, uint8_t *data, size_t len){
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if(!client->canSend())
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return 0;
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size_t space = client->space();
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if(space < 2)
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return 0;
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uint8_t mbuf[4] = {0,0,0,0};
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uint8_t headLen = 2;
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if(len && mask){
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headLen += 4;
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mbuf[0] = rand() % 0xFF;
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mbuf[1] = rand() % 0xFF;
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mbuf[2] = rand() % 0xFF;
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mbuf[3] = rand() % 0xFF;
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}
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if(len > 125)
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headLen += 2;
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if(space < headLen)
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return 0;
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space -= headLen;
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if(len > space) len = space;
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uint8_t *buf = (uint8_t*)malloc(headLen);
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if(buf == NULL){
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//os_printf("could not malloc %u bytes for frame header\n", headLen);
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return 0;
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}
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buf[0] = opcode & 0x0F;
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if(final)
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buf[0] |= 0x80;
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if(len < 126)
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buf[1] = len & 0x7F;
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else {
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buf[1] = 126;
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buf[2] = (uint8_t)((len >> 8) & 0xFF);
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buf[3] = (uint8_t)(len & 0xFF);
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}
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if(len && mask){
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buf[1] |= 0x80;
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memcpy(buf + (headLen - 4), mbuf, 4);
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}
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if(client->add((const char *)buf, headLen) != headLen){
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//os_printf("error adding %lu header bytes\n", headLen);
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free(buf);
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return 0;
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}
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free(buf);
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if(len){
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if(len && mask){
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size_t i;
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for(i=0;i<len;i++)
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data[i] = data[i] ^ mbuf[i%4];
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}
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if(client->add((const char *)data, len) != len){
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//os_printf("error adding %lu data bytes\n", len);
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return 0;
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}
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}
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if(!client->send()){
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//os_printf("error sending frame: %lu\n", headLen+len);
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return 0;
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}
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return len;
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}
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/*
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* AsyncWebSocketMessageBuffer
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*/
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AsyncWebSocketMessageBuffer::AsyncWebSocketMessageBuffer()
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:_data(nullptr)
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,_len(0)
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,_lock(false)
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,_count(0)
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{
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}
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AsyncWebSocketMessageBuffer::AsyncWebSocketMessageBuffer(uint8_t * data, size_t size)
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:_data(nullptr)
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,_len(size)
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,_lock(false)
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,_count(0)
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{
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if (!data) {
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return;
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}
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_data = new uint8_t[_len + 1];
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if (_data) {
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memcpy(_data, data, _len);
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_data[_len] = 0;
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}
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}
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AsyncWebSocketMessageBuffer::AsyncWebSocketMessageBuffer(size_t size)
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:_data(nullptr)
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,_len(size)
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,_lock(false)
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,_count(0)
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{
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_data = new uint8_t[_len + 1];
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if (_data) {
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_data[_len] = 0;
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}
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}
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AsyncWebSocketMessageBuffer::AsyncWebSocketMessageBuffer(const AsyncWebSocketMessageBuffer & copy)
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:_data(nullptr)
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,_len(0)
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,_lock(false)
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,_count(0)
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{
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_len = copy._len;
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_lock = copy._lock;
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_count = 0;
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if (_len) {
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_data = new uint8_t[_len + 1];
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_data[_len] = 0;
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}
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if (_data) {
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memcpy(_data, copy._data, _len);
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_data[_len] = 0;
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}
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}
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AsyncWebSocketMessageBuffer::AsyncWebSocketMessageBuffer(AsyncWebSocketMessageBuffer && copy)
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:_data(nullptr)
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,_len(0)
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,_lock(false)
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,_count(0)
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{
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_len = copy._len;
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_lock = copy._lock;
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_count = 0;
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if (copy._data) {
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_data = copy._data;
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copy._data = nullptr;
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}
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}
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AsyncWebSocketMessageBuffer::~AsyncWebSocketMessageBuffer()
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{
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if (_data) {
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delete[] _data;
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}
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}
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bool AsyncWebSocketMessageBuffer::reserve(size_t size)
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{
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_len = size;
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if (_data) {
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delete[] _data;
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_data = nullptr;
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}
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_data = new uint8_t[_len + 1];
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if (_data) {
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_data[_len] = 0;
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return true;
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} else {
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return false;
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}
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}
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/*
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* Control Frame
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*/
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class AsyncWebSocketControl {
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private:
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uint8_t _opcode;
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uint8_t *_data;
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size_t _len;
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bool _mask;
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bool _finished;
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public:
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AsyncWebSocketControl(uint8_t opcode, uint8_t *data=NULL, size_t len=0, bool mask=false)
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:_opcode(opcode)
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,_len(len)
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,_mask(len && mask)
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,_finished(false)
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{
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if(data == NULL)
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_len = 0;
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if(_len){
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if(_len > 125)
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_len = 125;
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_data = (uint8_t*)malloc(_len);
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if(_data == NULL)
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_len = 0;
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else memcpy(_data, data, len);
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} else _data = NULL;
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}
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virtual ~AsyncWebSocketControl(){
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if(_data != NULL)
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free(_data);
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}
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virtual bool finished() const { return _finished; }
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uint8_t opcode(){ return _opcode; }
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uint8_t len(){ return _len + 2; }
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size_t send(AsyncClient *client){
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_finished = true;
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return webSocketSendFrame(client, true, _opcode & 0x0F, _mask, _data, _len);
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}
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};
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/*
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* Basic Buffered Message
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*/
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AsyncWebSocketBasicMessage::AsyncWebSocketBasicMessage(const char * data, size_t len, uint8_t opcode, bool mask)
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:_len(len)
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,_sent(0)
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,_ack(0)
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,_acked(0)
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{
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_opcode = opcode & 0x07;
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_mask = mask;
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_data = (uint8_t*)malloc(_len+1);
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if(_data == NULL){
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_len = 0;
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_status = WS_MSG_ERROR;
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} else {
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_status = WS_MSG_SENDING;
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memcpy(_data, data, _len);
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_data[_len] = 0;
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}
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}
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AsyncWebSocketBasicMessage::AsyncWebSocketBasicMessage(uint8_t opcode, bool mask)
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:_len(0)
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,_sent(0)
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,_ack(0)
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,_acked(0)
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,_data(NULL)
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{
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_opcode = opcode & 0x07;
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_mask = mask;
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}
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AsyncWebSocketBasicMessage::~AsyncWebSocketBasicMessage() {
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if(_data != NULL)
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free(_data);
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}
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void AsyncWebSocketBasicMessage::ack(size_t len, uint32_t time) {
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(void)time;
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_acked += len;
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if(_sent == _len && _acked == _ack){
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_status = WS_MSG_SENT;
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}
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}
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size_t AsyncWebSocketBasicMessage::send(AsyncClient *client) {
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if(_status != WS_MSG_SENDING)
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return 0;
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if(_acked < _ack){
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return 0;
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}
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if(_sent == _len){
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if(_acked == _ack)
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_status = WS_MSG_SENT;
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return 0;
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}
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if(_sent > _len){
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_status = WS_MSG_ERROR;
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return 0;
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}
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size_t toSend = _len - _sent;
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size_t window = webSocketSendFrameWindow(client);
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if(window < toSend) {
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toSend = window;
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}
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_sent += toSend;
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_ack += toSend + ((toSend < 126)?2:4) + (_mask * 4);
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bool final = (_sent == _len);
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uint8_t* dPtr = (uint8_t*)(_data + (_sent - toSend));
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uint8_t opCode = (toSend && _sent == toSend)?_opcode:(uint8_t)WS_CONTINUATION;
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size_t sent = webSocketSendFrame(client, final, opCode, _mask, dPtr, toSend);
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_status = WS_MSG_SENDING;
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if(toSend && sent != toSend){
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_sent -= (toSend - sent);
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_ack -= (toSend - sent);
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}
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return sent;
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}
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// bool AsyncWebSocketBasicMessage::reserve(size_t size) {
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// if (size) {
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// _data = (uint8_t*)malloc(size +1);
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// if (_data) {
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// memset(_data, 0, size);
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// _len = size;
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// _status = WS_MSG_SENDING;
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// return true;
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// }
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// }
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// return false;
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// }
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/*
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* AsyncWebSocketMultiMessage Message
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*/
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AsyncWebSocketMultiMessage::AsyncWebSocketMultiMessage(AsyncWebSocketMessageBuffer * buffer, uint8_t opcode, bool mask)
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:_len(0)
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,_sent(0)
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,_ack(0)
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,_acked(0)
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,_WSbuffer(nullptr)
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{
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_opcode = opcode & 0x07;
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_mask = mask;
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if (buffer) {
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_WSbuffer = buffer;
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(*_WSbuffer)++;
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_data = buffer->get();
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_len = buffer->length();
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_status = WS_MSG_SENDING;
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//ets_printf("M: %u\n", _len);
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} else {
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_status = WS_MSG_ERROR;
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}
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}
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AsyncWebSocketMultiMessage::~AsyncWebSocketMultiMessage() {
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if (_WSbuffer) {
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(*_WSbuffer)--; // decreases the counter.
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}
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}
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void AsyncWebSocketMultiMessage::ack(size_t len, uint32_t time) {
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(void)time;
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_acked += len;
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if(_sent >= _len && _acked >= _ack){
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_status = WS_MSG_SENT;
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}
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//ets_printf("A: %u\n", len);
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}
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size_t AsyncWebSocketMultiMessage::send(AsyncClient *client) {
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if(_status != WS_MSG_SENDING)
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return 0;
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if(_acked < _ack){
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return 0;
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}
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if(_sent == _len){
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_status = WS_MSG_SENT;
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return 0;
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}
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if(_sent > _len){
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_status = WS_MSG_ERROR;
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//ets_printf("E: %u > %u\n", _sent, _len);
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return 0;
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}
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size_t toSend = _len - _sent;
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size_t window = webSocketSendFrameWindow(client);
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if(window < toSend) {
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toSend = window;
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}
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_sent += toSend;
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_ack += toSend + ((toSend < 126)?2:4) + (_mask * 4);
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//ets_printf("W: %u %u\n", _sent - toSend, toSend);
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bool final = (_sent == _len);
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uint8_t* dPtr = (uint8_t*)(_data + (_sent - toSend));
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uint8_t opCode = (toSend && _sent == toSend)?_opcode:(uint8_t)WS_CONTINUATION;
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size_t sent = webSocketSendFrame(client, final, opCode, _mask, dPtr, toSend);
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_status = WS_MSG_SENDING;
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if(toSend && sent != toSend){
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//ets_printf("E: %u != %u\n", toSend, sent);
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_sent -= (toSend - sent);
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_ack -= (toSend - sent);
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}
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//ets_printf("S: %u %u\n", _sent, sent);
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return sent;
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}
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/*
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* Async WebSocket Client
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*/
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const char * AWSC_PING_PAYLOAD = "ESPAsyncWebServer-PING";
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const size_t AWSC_PING_PAYLOAD_LEN = 22;
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AsyncWebSocketClient::AsyncWebSocketClient(AsyncWebServerRequest *request, AsyncWebSocket *server)
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: _controlQueue(LinkedList<AsyncWebSocketControl *>([](AsyncWebSocketControl *c){ delete c; }))
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, _messageQueue(LinkedList<AsyncWebSocketMessage *>([](AsyncWebSocketMessage *m){ delete m; }))
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, _tempObject(NULL)
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{
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_client = request->client();
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_server = server;
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_clientId = _server->_getNextId();
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_status = WS_CONNECTED;
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_pstate = 0;
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_lastMessageTime = millis();
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_keepAlivePeriod = 0;
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_client->setRxTimeout(0);
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_client->onError([](void *r, AsyncClient* c, int8_t error){ (void)c; ((AsyncWebSocketClient*)(r))->_onError(error); }, this);
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_client->onAck([](void *r, AsyncClient* c, size_t len, uint32_t time){ (void)c; ((AsyncWebSocketClient*)(r))->_onAck(len, time); }, this);
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_client->onDisconnect([](void *r, AsyncClient* c){ ((AsyncWebSocketClient*)(r))->_onDisconnect(); delete c; }, this);
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_client->onTimeout([](void *r, AsyncClient* c, uint32_t time){ (void)c; ((AsyncWebSocketClient*)(r))->_onTimeout(time); }, this);
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_client->onData([](void *r, AsyncClient* c, void *buf, size_t len){ (void)c; ((AsyncWebSocketClient*)(r))->_onData(buf, len); }, this);
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_client->onPoll([](void *r, AsyncClient* c){ (void)c; ((AsyncWebSocketClient*)(r))->_onPoll(); }, this);
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_server->_addClient(this);
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_server->_handleEvent(this, WS_EVT_CONNECT, request, NULL, 0);
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delete request;
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}
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AsyncWebSocketClient::~AsyncWebSocketClient(){
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_messageQueue.free();
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_controlQueue.free();
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_server->_handleEvent(this, WS_EVT_DISCONNECT, NULL, NULL, 0);
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}
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void AsyncWebSocketClient::_onAck(size_t len, uint32_t time){
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_lastMessageTime = millis();
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if(!_controlQueue.isEmpty()){
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auto head = _controlQueue.front();
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if(head->finished()){
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len -= head->len();
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if(_status == WS_DISCONNECTING && head->opcode() == WS_DISCONNECT){
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_controlQueue.remove(head);
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_status = WS_DISCONNECTED;
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_client->close(true);
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return;
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}
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_controlQueue.remove(head);
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}
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}
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if(len && !_messageQueue.isEmpty()){
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_messageQueue.front()->ack(len, time);
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}
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_server->_cleanBuffers();
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_runQueue();
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}
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void AsyncWebSocketClient::_onPoll(){
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if(_client->canSend() && (!_controlQueue.isEmpty() || !_messageQueue.isEmpty())){
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_runQueue();
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} else if(_keepAlivePeriod > 0 && _controlQueue.isEmpty() && _messageQueue.isEmpty() && (millis() - _lastMessageTime) >= _keepAlivePeriod){
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ping((uint8_t *)AWSC_PING_PAYLOAD, AWSC_PING_PAYLOAD_LEN);
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}
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}
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void AsyncWebSocketClient::_runQueue(){
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while(!_messageQueue.isEmpty() && _messageQueue.front()->finished()){
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_messageQueue.remove(_messageQueue.front());
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}
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|
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if(!_controlQueue.isEmpty() && (_messageQueue.isEmpty() || _messageQueue.front()->betweenFrames()) && webSocketSendFrameWindow(_client) > (size_t)(_controlQueue.front()->len() - 1)){
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_controlQueue.front()->send(_client);
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} else if(!_messageQueue.isEmpty() && _messageQueue.front()->betweenFrames() && webSocketSendFrameWindow(_client)){
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_messageQueue.front()->send(_client);
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}
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}
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bool AsyncWebSocketClient::queueIsFull(){
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if((_messageQueue.length() >= WS_MAX_QUEUED_MESSAGES) || (_status != WS_CONNECTED) ) return true;
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return false;
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}
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|
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void AsyncWebSocketClient::_queueMessage(AsyncWebSocketMessage *dataMessage){
|
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if(dataMessage == NULL)
|
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return;
|
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if(_status != WS_CONNECTED){
|
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delete dataMessage;
|
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return;
|
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}
|
|
if(_messageQueue.length() >= WS_MAX_QUEUED_MESSAGES){
|
|
ets_printf("ERROR: Too many messages queued\n");
|
|
delete dataMessage;
|
|
} else {
|
|
_messageQueue.add(dataMessage);
|
|
}
|
|
if(_client->canSend())
|
|
_runQueue();
|
|
}
|
|
|
|
void AsyncWebSocketClient::_queueControl(AsyncWebSocketControl *controlMessage){
|
|
if(controlMessage == NULL)
|
|
return;
|
|
_controlQueue.add(controlMessage);
|
|
if(_client->canSend())
|
|
_runQueue();
|
|
}
|
|
|
|
void AsyncWebSocketClient::close(uint16_t code, const char * message){
|
|
if(_status != WS_CONNECTED)
|
|
return;
|
|
if(code){
|
|
uint8_t packetLen = 2;
|
|
if(message != NULL){
|
|
size_t mlen = strlen(message);
|
|
if(mlen > 123) mlen = 123;
|
|
packetLen += mlen;
|
|
}
|
|
char * buf = (char*)malloc(packetLen);
|
|
if(buf != NULL){
|
|
buf[0] = (uint8_t)(code >> 8);
|
|
buf[1] = (uint8_t)(code & 0xFF);
|
|
if(message != NULL){
|
|
memcpy(buf+2, message, packetLen -2);
|
|
}
|
|
_queueControl(new AsyncWebSocketControl(WS_DISCONNECT,(uint8_t*)buf,packetLen));
|
|
free(buf);
|
|
return;
|
|
}
|
|
}
|
|
_queueControl(new AsyncWebSocketControl(WS_DISCONNECT));
|
|
}
|
|
|
|
void AsyncWebSocketClient::ping(uint8_t *data, size_t len){
|
|
if(_status == WS_CONNECTED)
|
|
_queueControl(new AsyncWebSocketControl(WS_PING, data, len));
|
|
}
|
|
|
|
void AsyncWebSocketClient::_onError(int8_t){}
|
|
|
|
void AsyncWebSocketClient::_onTimeout(uint32_t time){
|
|
(void)time;
|
|
_client->close(true);
|
|
}
|
|
|
|
void AsyncWebSocketClient::_onDisconnect(){
|
|
_client = NULL;
|
|
_server->_handleDisconnect(this);
|
|
}
|
|
|
|
void AsyncWebSocketClient::_onData(void *pbuf, size_t plen){
|
|
_lastMessageTime = millis();
|
|
uint8_t *data = (uint8_t*)pbuf;
|
|
while(plen > 0){
|
|
if(!_pstate){
|
|
const uint8_t *fdata = data;
|
|
_pinfo.index = 0;
|
|
_pinfo.final = (fdata[0] & 0x80) != 0;
|
|
_pinfo.opcode = fdata[0] & 0x0F;
|
|
_pinfo.masked = (fdata[1] & 0x80) != 0;
|
|
_pinfo.len = fdata[1] & 0x7F;
|
|
data += 2;
|
|
plen -= 2;
|
|
if(_pinfo.len == 126){
|
|
_pinfo.len = fdata[3] | (uint16_t)(fdata[2]) << 8;
|
|
data += 2;
|
|
plen -= 2;
|
|
} else if(_pinfo.len == 127){
|
|
_pinfo.len = fdata[9] | (uint16_t)(fdata[8]) << 8 | (uint32_t)(fdata[7]) << 16 | (uint32_t)(fdata[6]) << 24 | (uint64_t)(fdata[5]) << 32 | (uint64_t)(fdata[4]) << 40 | (uint64_t)(fdata[3]) << 48 | (uint64_t)(fdata[2]) << 56;
|
|
data += 8;
|
|
plen -= 8;
|
|
}
|
|
|
|
if(_pinfo.masked){
|
|
memcpy(_pinfo.mask, data, 4);
|
|
data += 4;
|
|
plen -= 4;
|
|
}
|
|
}
|
|
|
|
const size_t datalen = std::min((size_t)(_pinfo.len - _pinfo.index), plen);
|
|
const auto datalast = data[datalen];
|
|
|
|
if(_pinfo.masked){
|
|
for(size_t i=0;i<datalen;i++)
|
|
data[i] ^= _pinfo.mask[(_pinfo.index+i)%4];
|
|
}
|
|
|
|
if((datalen + _pinfo.index) < _pinfo.len){
|
|
_pstate = 1;
|
|
|
|
if(_pinfo.index == 0){
|
|
if(_pinfo.opcode){
|
|
_pinfo.message_opcode = _pinfo.opcode;
|
|
_pinfo.num = 0;
|
|
} else _pinfo.num += 1;
|
|
}
|
|
_server->_handleEvent(this, WS_EVT_DATA, (void *)&_pinfo, (uint8_t*)data, datalen);
|
|
|
|
_pinfo.index += datalen;
|
|
} else if((datalen + _pinfo.index) == _pinfo.len){
|
|
_pstate = 0;
|
|
if(_pinfo.opcode == WS_DISCONNECT){
|
|
if(datalen){
|
|
uint16_t reasonCode = (uint16_t)(data[0] << 8) + data[1];
|
|
char * reasonString = (char*)(data+2);
|
|
if(reasonCode > 1001){
|
|
_server->_handleEvent(this, WS_EVT_ERROR, (void *)&reasonCode, (uint8_t*)reasonString, strlen(reasonString));
|
|
}
|
|
}
|
|
if(_status == WS_DISCONNECTING){
|
|
_status = WS_DISCONNECTED;
|
|
_client->close(true);
|
|
} else {
|
|
_status = WS_DISCONNECTING;
|
|
_client->ackLater();
|
|
_queueControl(new AsyncWebSocketControl(WS_DISCONNECT, data, datalen));
|
|
}
|
|
} else if(_pinfo.opcode == WS_PING){
|
|
_queueControl(new AsyncWebSocketControl(WS_PONG, data, datalen));
|
|
} else if(_pinfo.opcode == WS_PONG){
|
|
if(datalen != AWSC_PING_PAYLOAD_LEN || memcmp(AWSC_PING_PAYLOAD, data, AWSC_PING_PAYLOAD_LEN) != 0)
|
|
_server->_handleEvent(this, WS_EVT_PONG, NULL, data, datalen);
|
|
} else if(_pinfo.opcode < 8){//continuation or text/binary frame
|
|
_server->_handleEvent(this, WS_EVT_DATA, (void *)&_pinfo, data, datalen);
|
|
}
|
|
} else {
|
|
//os_printf("frame error: len: %u, index: %llu, total: %llu\n", datalen, _pinfo.index, _pinfo.len);
|
|
//what should we do?
|
|
break;
|
|
}
|
|
|
|
// restore byte as _handleEvent may have added a null terminator i.e., data[len] = 0;
|
|
if (datalen > 0)
|
|
data[datalen] = datalast;
|
|
|
|
data += datalen;
|
|
plen -= datalen;
|
|
}
|
|
}
|
|
|
|
size_t AsyncWebSocketClient::printf(const char *format, ...) {
|
|
va_list arg;
|
|
va_start(arg, format);
|
|
char* temp = new char[MAX_PRINTF_LEN];
|
|
if(!temp){
|
|
va_end(arg);
|
|
return 0;
|
|
}
|
|
char* buffer = temp;
|
|
size_t len = vsnprintf(temp, MAX_PRINTF_LEN, format, arg);
|
|
va_end(arg);
|
|
|
|
if (len > (MAX_PRINTF_LEN - 1)) {
|
|
buffer = new char[len + 1];
|
|
if (!buffer) {
|
|
delete[] temp;
|
|
return 0;
|
|
}
|
|
va_start(arg, format);
|
|
vsnprintf(buffer, len + 1, format, arg);
|
|
va_end(arg);
|
|
}
|
|
text(buffer, len);
|
|
if (buffer != temp) {
|
|
delete[] buffer;
|
|
}
|
|
delete[] temp;
|
|
return len;
|
|
}
|
|
|
|
#ifndef ESP32
|
|
size_t AsyncWebSocketClient::printf_P(PGM_P formatP, ...) {
|
|
va_list arg;
|
|
va_start(arg, formatP);
|
|
char* temp = new char[MAX_PRINTF_LEN];
|
|
if(!temp){
|
|
va_end(arg);
|
|
return 0;
|
|
}
|
|
char* buffer = temp;
|
|
size_t len = vsnprintf_P(temp, MAX_PRINTF_LEN, formatP, arg);
|
|
va_end(arg);
|
|
|
|
if (len > (MAX_PRINTF_LEN - 1)) {
|
|
buffer = new char[len + 1];
|
|
if (!buffer) {
|
|
delete[] temp;
|
|
return 0;
|
|
}
|
|
va_start(arg, formatP);
|
|
vsnprintf_P(buffer, len + 1, formatP, arg);
|
|
va_end(arg);
|
|
}
|
|
text(buffer, len);
|
|
if (buffer != temp) {
|
|
delete[] buffer;
|
|
}
|
|
delete[] temp;
|
|
return len;
|
|
}
|
|
#endif
|
|
|
|
void AsyncWebSocketClient::text(const char * message, size_t len){
|
|
_queueMessage(new AsyncWebSocketBasicMessage(message, len));
|
|
}
|
|
void AsyncWebSocketClient::text(const char * message){
|
|
text(message, strlen(message));
|
|
}
|
|
void AsyncWebSocketClient::text(uint8_t * message, size_t len){
|
|
text((const char *)message, len);
|
|
}
|
|
void AsyncWebSocketClient::text(char * message){
|
|
text(message, strlen(message));
|
|
}
|
|
void AsyncWebSocketClient::text(const String &message){
|
|
text(message.c_str(), message.length());
|
|
}
|
|
void AsyncWebSocketClient::text(const __FlashStringHelper *data){
|
|
PGM_P p = reinterpret_cast<PGM_P>(data);
|
|
size_t n = 0;
|
|
while (1) {
|
|
if (pgm_read_byte(p+n) == 0) break;
|
|
n += 1;
|
|
}
|
|
char * message = (char*) malloc(n+1);
|
|
if(message){
|
|
for(size_t b=0; b<n; b++)
|
|
message[b] = pgm_read_byte(p++);
|
|
message[n] = 0;
|
|
text(message, n);
|
|
free(message);
|
|
}
|
|
}
|
|
void AsyncWebSocketClient::text(AsyncWebSocketMessageBuffer * buffer)
|
|
{
|
|
_queueMessage(new AsyncWebSocketMultiMessage(buffer));
|
|
}
|
|
|
|
void AsyncWebSocketClient::binary(const char * message, size_t len){
|
|
_queueMessage(new AsyncWebSocketBasicMessage(message, len, WS_BINARY));
|
|
}
|
|
void AsyncWebSocketClient::binary(const char * message){
|
|
binary(message, strlen(message));
|
|
}
|
|
void AsyncWebSocketClient::binary(uint8_t * message, size_t len){
|
|
binary((const char *)message, len);
|
|
}
|
|
void AsyncWebSocketClient::binary(char * message){
|
|
binary(message, strlen(message));
|
|
}
|
|
void AsyncWebSocketClient::binary(const String &message){
|
|
binary(message.c_str(), message.length());
|
|
}
|
|
void AsyncWebSocketClient::binary(const __FlashStringHelper *data, size_t len){
|
|
PGM_P p = reinterpret_cast<PGM_P>(data);
|
|
char * message = (char*) malloc(len);
|
|
if(message){
|
|
for(size_t b=0; b<len; b++)
|
|
message[b] = pgm_read_byte(p++);
|
|
binary(message, len);
|
|
free(message);
|
|
}
|
|
|
|
}
|
|
void AsyncWebSocketClient::binary(AsyncWebSocketMessageBuffer * buffer)
|
|
{
|
|
_queueMessage(new AsyncWebSocketMultiMessage(buffer, WS_BINARY));
|
|
}
|
|
|
|
IPAddress AsyncWebSocketClient::remoteIP() {
|
|
if(!_client) {
|
|
return IPAddress(0U);
|
|
}
|
|
return _client->remoteIP();
|
|
}
|
|
|
|
uint16_t AsyncWebSocketClient::remotePort() {
|
|
if(!_client) {
|
|
return 0;
|
|
}
|
|
return _client->remotePort();
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Async Web Socket - Each separate socket location
|
|
*/
|
|
|
|
AsyncWebSocket::AsyncWebSocket(const String& url)
|
|
:_url(url)
|
|
,_clients(LinkedList<AsyncWebSocketClient *>([](AsyncWebSocketClient *c){ delete c; }))
|
|
,_cNextId(1)
|
|
,_enabled(true)
|
|
,_buffers(LinkedList<AsyncWebSocketMessageBuffer *>([](AsyncWebSocketMessageBuffer *b){ delete b; }))
|
|
{
|
|
_eventHandler = NULL;
|
|
}
|
|
|
|
AsyncWebSocket::~AsyncWebSocket(){}
|
|
|
|
void AsyncWebSocket::_handleEvent(AsyncWebSocketClient * client, AwsEventType type, void * arg, uint8_t *data, size_t len){
|
|
if(_eventHandler != NULL){
|
|
_eventHandler(this, client, type, arg, data, len);
|
|
}
|
|
}
|
|
|
|
void AsyncWebSocket::_addClient(AsyncWebSocketClient * client){
|
|
_clients.add(client);
|
|
}
|
|
|
|
void AsyncWebSocket::_handleDisconnect(AsyncWebSocketClient * client){
|
|
|
|
_clients.remove_first([=](AsyncWebSocketClient * c){
|
|
return c->id() == client->id();
|
|
});
|
|
}
|
|
|
|
bool AsyncWebSocket::availableForWriteAll(){
|
|
for(const auto& c: _clients){
|
|
if(c->queueIsFull()) return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool AsyncWebSocket::availableForWrite(uint32_t id){
|
|
for(const auto& c: _clients){
|
|
if(c->queueIsFull() && (c->id() == id )) return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
size_t AsyncWebSocket::count() const {
|
|
return _clients.count_if([](AsyncWebSocketClient * c){
|
|
return c->status() == WS_CONNECTED;
|
|
});
|
|
}
|
|
|
|
AsyncWebSocketClient * AsyncWebSocket::client(uint32_t id){
|
|
for(const auto &c: _clients){
|
|
if(c->id() == id && c->status() == WS_CONNECTED){
|
|
return c;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
|
|
void AsyncWebSocket::close(uint32_t id, uint16_t code, const char * message){
|
|
AsyncWebSocketClient * c = client(id);
|
|
if(c)
|
|
c->close(code, message);
|
|
}
|
|
|
|
void AsyncWebSocket::closeAll(uint16_t code, const char * message){
|
|
for(const auto& c: _clients){
|
|
if(c->status() == WS_CONNECTED)
|
|
c->close(code, message);
|
|
}
|
|
}
|
|
|
|
void AsyncWebSocket::cleanupClients(uint16_t maxClients)
|
|
{
|
|
if (count() > maxClients){
|
|
_clients.front()->close();
|
|
}
|
|
}
|
|
|
|
void AsyncWebSocket::ping(uint32_t id, uint8_t *data, size_t len){
|
|
AsyncWebSocketClient * c = client(id);
|
|
if(c)
|
|
c->ping(data, len);
|
|
}
|
|
|
|
void AsyncWebSocket::pingAll(uint8_t *data, size_t len){
|
|
for(const auto& c: _clients){
|
|
if(c->status() == WS_CONNECTED)
|
|
c->ping(data, len);
|
|
}
|
|
}
|
|
|
|
void AsyncWebSocket::text(uint32_t id, const char * message, size_t len){
|
|
AsyncWebSocketClient * c = client(id);
|
|
if(c)
|
|
c->text(message, len);
|
|
}
|
|
|
|
void AsyncWebSocket::textAll(AsyncWebSocketMessageBuffer * buffer){
|
|
if (!buffer) return;
|
|
buffer->lock();
|
|
for(const auto& c: _clients){
|
|
if(c->status() == WS_CONNECTED){
|
|
c->text(buffer);
|
|
}
|
|
}
|
|
buffer->unlock();
|
|
_cleanBuffers();
|
|
}
|
|
|
|
|
|
void AsyncWebSocket::textAll(const char * message, size_t len){
|
|
AsyncWebSocketMessageBuffer * WSBuffer = makeBuffer((uint8_t *)message, len);
|
|
textAll(WSBuffer);
|
|
}
|
|
|
|
void AsyncWebSocket::binary(uint32_t id, const char * message, size_t len){
|
|
AsyncWebSocketClient * c = client(id);
|
|
if(c)
|
|
c->binary(message, len);
|
|
}
|
|
|
|
void AsyncWebSocket::binaryAll(const char * message, size_t len){
|
|
AsyncWebSocketMessageBuffer * buffer = makeBuffer((uint8_t *)message, len);
|
|
binaryAll(buffer);
|
|
}
|
|
|
|
void AsyncWebSocket::binaryAll(AsyncWebSocketMessageBuffer * buffer)
|
|
{
|
|
if (!buffer) return;
|
|
buffer->lock();
|
|
for(const auto& c: _clients){
|
|
if(c->status() == WS_CONNECTED)
|
|
c->binary(buffer);
|
|
}
|
|
buffer->unlock();
|
|
_cleanBuffers();
|
|
}
|
|
|
|
void AsyncWebSocket::message(uint32_t id, AsyncWebSocketMessage *message){
|
|
AsyncWebSocketClient * c = client(id);
|
|
if(c)
|
|
c->message(message);
|
|
}
|
|
|
|
void AsyncWebSocket::messageAll(AsyncWebSocketMultiMessage *message){
|
|
for(const auto& c: _clients){
|
|
if(c->status() == WS_CONNECTED)
|
|
c->message(message);
|
|
}
|
|
_cleanBuffers();
|
|
}
|
|
|
|
size_t AsyncWebSocket::printf(uint32_t id, const char *format, ...){
|
|
AsyncWebSocketClient * c = client(id);
|
|
if(c){
|
|
va_list arg;
|
|
va_start(arg, format);
|
|
size_t len = c->printf(format, arg);
|
|
va_end(arg);
|
|
return len;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
size_t AsyncWebSocket::printfAll(const char *format, ...) {
|
|
va_list arg;
|
|
char* temp = new char[MAX_PRINTF_LEN];
|
|
if(!temp){
|
|
return 0;
|
|
}
|
|
va_start(arg, format);
|
|
size_t len = vsnprintf(temp, MAX_PRINTF_LEN, format, arg);
|
|
va_end(arg);
|
|
delete[] temp;
|
|
|
|
AsyncWebSocketMessageBuffer * buffer = makeBuffer(len);
|
|
if (!buffer) {
|
|
return 0;
|
|
}
|
|
|
|
va_start(arg, format);
|
|
vsnprintf( (char *)buffer->get(), len + 1, format, arg);
|
|
va_end(arg);
|
|
|
|
textAll(buffer);
|
|
return len;
|
|
}
|
|
|
|
#ifndef ESP32
|
|
size_t AsyncWebSocket::printf_P(uint32_t id, PGM_P formatP, ...){
|
|
AsyncWebSocketClient * c = client(id);
|
|
if(c != NULL){
|
|
va_list arg;
|
|
va_start(arg, formatP);
|
|
size_t len = c->printf_P(formatP, arg);
|
|
va_end(arg);
|
|
return len;
|
|
}
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
size_t AsyncWebSocket::printfAll_P(PGM_P formatP, ...) {
|
|
va_list arg;
|
|
char* temp = new char[MAX_PRINTF_LEN];
|
|
if(!temp){
|
|
return 0;
|
|
}
|
|
va_start(arg, formatP);
|
|
size_t len = vsnprintf_P(temp, MAX_PRINTF_LEN, formatP, arg);
|
|
va_end(arg);
|
|
delete[] temp;
|
|
|
|
AsyncWebSocketMessageBuffer * buffer = makeBuffer(len + 1);
|
|
if (!buffer) {
|
|
return 0;
|
|
}
|
|
|
|
va_start(arg, formatP);
|
|
vsnprintf_P((char *)buffer->get(), len + 1, formatP, arg);
|
|
va_end(arg);
|
|
|
|
textAll(buffer);
|
|
return len;
|
|
}
|
|
|
|
void AsyncWebSocket::text(uint32_t id, const char * message){
|
|
text(id, message, strlen(message));
|
|
}
|
|
void AsyncWebSocket::text(uint32_t id, uint8_t * message, size_t len){
|
|
text(id, (const char *)message, len);
|
|
}
|
|
void AsyncWebSocket::text(uint32_t id, char * message){
|
|
text(id, message, strlen(message));
|
|
}
|
|
void AsyncWebSocket::text(uint32_t id, const String &message){
|
|
text(id, message.c_str(), message.length());
|
|
}
|
|
void AsyncWebSocket::text(uint32_t id, const __FlashStringHelper *message){
|
|
AsyncWebSocketClient * c = client(id);
|
|
if(c != NULL)
|
|
c->text(message);
|
|
}
|
|
void AsyncWebSocket::textAll(const char * message){
|
|
textAll(message, strlen(message));
|
|
}
|
|
void AsyncWebSocket::textAll(uint8_t * message, size_t len){
|
|
textAll((const char *)message, len);
|
|
}
|
|
void AsyncWebSocket::textAll(char * message){
|
|
textAll(message, strlen(message));
|
|
}
|
|
void AsyncWebSocket::textAll(const String &message){
|
|
textAll(message.c_str(), message.length());
|
|
}
|
|
void AsyncWebSocket::textAll(const __FlashStringHelper *message){
|
|
for(const auto& c: _clients){
|
|
if(c->status() == WS_CONNECTED)
|
|
c->text(message);
|
|
}
|
|
}
|
|
void AsyncWebSocket::binary(uint32_t id, const char * message){
|
|
binary(id, message, strlen(message));
|
|
}
|
|
void AsyncWebSocket::binary(uint32_t id, uint8_t * message, size_t len){
|
|
binary(id, (const char *)message, len);
|
|
}
|
|
void AsyncWebSocket::binary(uint32_t id, char * message){
|
|
binary(id, message, strlen(message));
|
|
}
|
|
void AsyncWebSocket::binary(uint32_t id, const String &message){
|
|
binary(id, message.c_str(), message.length());
|
|
}
|
|
void AsyncWebSocket::binary(uint32_t id, const __FlashStringHelper *message, size_t len){
|
|
AsyncWebSocketClient * c = client(id);
|
|
if(c != NULL)
|
|
c-> binary(message, len);
|
|
}
|
|
void AsyncWebSocket::binaryAll(const char * message){
|
|
binaryAll(message, strlen(message));
|
|
}
|
|
void AsyncWebSocket::binaryAll(uint8_t * message, size_t len){
|
|
binaryAll((const char *)message, len);
|
|
}
|
|
void AsyncWebSocket::binaryAll(char * message){
|
|
binaryAll(message, strlen(message));
|
|
}
|
|
void AsyncWebSocket::binaryAll(const String &message){
|
|
binaryAll(message.c_str(), message.length());
|
|
}
|
|
void AsyncWebSocket::binaryAll(const __FlashStringHelper *message, size_t len){
|
|
for(const auto& c: _clients){
|
|
if(c->status() == WS_CONNECTED)
|
|
c-> binary(message, len);
|
|
}
|
|
}
|
|
|
|
const char * WS_STR_CONNECTION = "Connection";
|
|
const char * WS_STR_UPGRADE = "Upgrade";
|
|
const char * WS_STR_ORIGIN = "Origin";
|
|
const char * WS_STR_VERSION = "Sec-WebSocket-Version";
|
|
const char * WS_STR_KEY = "Sec-WebSocket-Key";
|
|
const char * WS_STR_PROTOCOL = "Sec-WebSocket-Protocol";
|
|
const char * WS_STR_ACCEPT = "Sec-WebSocket-Accept";
|
|
const char * WS_STR_UUID = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
|
|
|
|
bool AsyncWebSocket::canHandle(AsyncWebServerRequest *request){
|
|
if(!_enabled)
|
|
return false;
|
|
|
|
if(request->method() != HTTP_GET || !request->url().equals(_url) || !request->isExpectedRequestedConnType(RCT_WS))
|
|
return false;
|
|
|
|
request->addInterestingHeader(WS_STR_CONNECTION);
|
|
request->addInterestingHeader(WS_STR_UPGRADE);
|
|
request->addInterestingHeader(WS_STR_ORIGIN);
|
|
request->addInterestingHeader(WS_STR_VERSION);
|
|
request->addInterestingHeader(WS_STR_KEY);
|
|
request->addInterestingHeader(WS_STR_PROTOCOL);
|
|
return true;
|
|
}
|
|
|
|
void AsyncWebSocket::handleRequest(AsyncWebServerRequest *request){
|
|
if(!request->hasHeader(WS_STR_VERSION) || !request->hasHeader(WS_STR_KEY)){
|
|
request->send(400);
|
|
return;
|
|
}
|
|
if((_username != "" && _password != "") && !request->authenticate(_username.c_str(), _password.c_str())){
|
|
return request->requestAuthentication();
|
|
}
|
|
AsyncWebHeader* version = request->getHeader(WS_STR_VERSION);
|
|
if(version->value().toInt() != 13){
|
|
AsyncWebServerResponse *response = request->beginResponse(400);
|
|
response->addHeader(WS_STR_VERSION,"13");
|
|
request->send(response);
|
|
return;
|
|
}
|
|
AsyncWebHeader* key = request->getHeader(WS_STR_KEY);
|
|
AsyncWebServerResponse *response = new AsyncWebSocketResponse(key->value(), this);
|
|
if(request->hasHeader(WS_STR_PROTOCOL)){
|
|
AsyncWebHeader* protocol = request->getHeader(WS_STR_PROTOCOL);
|
|
//ToDo: check protocol
|
|
response->addHeader(WS_STR_PROTOCOL, protocol->value());
|
|
}
|
|
request->send(response);
|
|
}
|
|
|
|
AsyncWebSocketMessageBuffer * AsyncWebSocket::makeBuffer(size_t size)
|
|
{
|
|
AsyncWebSocketMessageBuffer * buffer = new AsyncWebSocketMessageBuffer(size);
|
|
if (buffer) {
|
|
AsyncWebLockGuard l(_lock);
|
|
_buffers.add(buffer);
|
|
}
|
|
return buffer;
|
|
}
|
|
|
|
AsyncWebSocketMessageBuffer * AsyncWebSocket::makeBuffer(uint8_t * data, size_t size)
|
|
{
|
|
AsyncWebSocketMessageBuffer * buffer = new AsyncWebSocketMessageBuffer(data, size);
|
|
|
|
if (buffer) {
|
|
AsyncWebLockGuard l(_lock);
|
|
_buffers.add(buffer);
|
|
}
|
|
|
|
return buffer;
|
|
}
|
|
|
|
void AsyncWebSocket::_cleanBuffers()
|
|
{
|
|
AsyncWebLockGuard l(_lock);
|
|
|
|
for(AsyncWebSocketMessageBuffer * c: _buffers){
|
|
if(c && c->canDelete()){
|
|
_buffers.remove(c);
|
|
}
|
|
}
|
|
}
|
|
|
|
AsyncWebSocket::AsyncWebSocketClientLinkedList AsyncWebSocket::getClients() const {
|
|
return _clients;
|
|
}
|
|
|
|
/*
|
|
* Response to Web Socket request - sends the authorization and detaches the TCP Client from the web server
|
|
* Authentication code from https://github.com/Links2004/arduinoWebSockets/blob/master/src/WebSockets.cpp#L480
|
|
*/
|
|
|
|
AsyncWebSocketResponse::AsyncWebSocketResponse(const String& key, AsyncWebSocket *server){
|
|
_server = server;
|
|
_code = 101;
|
|
_sendContentLength = false;
|
|
|
|
uint8_t * hash = (uint8_t*)malloc(20);
|
|
if(hash == NULL){
|
|
_state = RESPONSE_FAILED;
|
|
return;
|
|
}
|
|
char * buffer = (char *) malloc(33);
|
|
if(buffer == NULL){
|
|
free(hash);
|
|
_state = RESPONSE_FAILED;
|
|
return;
|
|
}
|
|
#ifdef ESP8266
|
|
sha1(key + WS_STR_UUID, hash);
|
|
#else
|
|
(String&)key += WS_STR_UUID;
|
|
mbedtls_sha1_context ctx;
|
|
mbedtls_sha1_init(&ctx);
|
|
mbedtls_sha1_starts_ret(&ctx);
|
|
mbedtls_sha1_update_ret(&ctx, (const unsigned char*)key.c_str(), key.length());
|
|
mbedtls_sha1_finish_ret(&ctx, hash);
|
|
mbedtls_sha1_free(&ctx);
|
|
#endif
|
|
base64_encodestate _state;
|
|
base64_init_encodestate(&_state);
|
|
int len = base64_encode_block((const char *) hash, 20, buffer, &_state);
|
|
len = base64_encode_blockend((buffer + len), &_state);
|
|
addHeader(WS_STR_CONNECTION, WS_STR_UPGRADE);
|
|
addHeader(WS_STR_UPGRADE, "websocket");
|
|
addHeader(WS_STR_ACCEPT,buffer);
|
|
free(buffer);
|
|
free(hash);
|
|
}
|
|
|
|
void AsyncWebSocketResponse::_respond(AsyncWebServerRequest *request){
|
|
if(_state == RESPONSE_FAILED){
|
|
request->client()->close(true);
|
|
return;
|
|
}
|
|
String out = _assembleHead(request->version());
|
|
request->client()->write(out.c_str(), _headLength);
|
|
_state = RESPONSE_WAIT_ACK;
|
|
}
|
|
|
|
size_t AsyncWebSocketResponse::_ack(AsyncWebServerRequest *request, size_t len, uint32_t time){
|
|
(void)time;
|
|
if(len){
|
|
new AsyncWebSocketClient(request, _server);
|
|
}
|
|
return 0;
|
|
}
|