Restructured Repo before adding Hardware-Files
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697
Software/lib/ESP Async WebServer/src/WebResponses.cpp
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697
Software/lib/ESP Async WebServer/src/WebResponses.cpp
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/*
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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 "ESPAsyncWebServer.h"
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#include "WebResponseImpl.h"
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#include "cbuf.h"
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// Since ESP8266 does not link memchr by default, here's its implementation.
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void* memchr(void* ptr, int ch, size_t count)
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{
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unsigned char* p = static_cast<unsigned char*>(ptr);
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while(count--)
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if(*p++ == static_cast<unsigned char>(ch))
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return --p;
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return nullptr;
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}
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/*
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* Abstract Response
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* */
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const char* AsyncWebServerResponse::_responseCodeToString(int code) {
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switch (code) {
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case 100: return "Continue";
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case 101: return "Switching Protocols";
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case 200: return "OK";
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case 201: return "Created";
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case 202: return "Accepted";
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case 203: return "Non-Authoritative Information";
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case 204: return "No Content";
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case 205: return "Reset Content";
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case 206: return "Partial Content";
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case 300: return "Multiple Choices";
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case 301: return "Moved Permanently";
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case 302: return "Found";
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case 303: return "See Other";
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case 304: return "Not Modified";
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case 305: return "Use Proxy";
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case 307: return "Temporary Redirect";
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case 400: return "Bad Request";
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case 401: return "Unauthorized";
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case 402: return "Payment Required";
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case 403: return "Forbidden";
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case 404: return "Not Found";
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case 405: return "Method Not Allowed";
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case 406: return "Not Acceptable";
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case 407: return "Proxy Authentication Required";
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case 408: return "Request Time-out";
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case 409: return "Conflict";
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case 410: return "Gone";
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case 411: return "Length Required";
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case 412: return "Precondition Failed";
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case 413: return "Request Entity Too Large";
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case 414: return "Request-URI Too Large";
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case 415: return "Unsupported Media Type";
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case 416: return "Requested range not satisfiable";
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case 417: return "Expectation Failed";
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case 500: return "Internal Server Error";
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case 501: return "Not Implemented";
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case 502: return "Bad Gateway";
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case 503: return "Service Unavailable";
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case 504: return "Gateway Time-out";
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case 505: return "HTTP Version not supported";
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default: return "";
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}
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}
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AsyncWebServerResponse::AsyncWebServerResponse()
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: _code(0)
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, _headers(LinkedList<AsyncWebHeader *>([](AsyncWebHeader *h){ delete h; }))
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, _contentType()
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, _contentLength(0)
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, _sendContentLength(true)
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, _chunked(false)
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, _headLength(0)
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, _sentLength(0)
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, _ackedLength(0)
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, _writtenLength(0)
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, _state(RESPONSE_SETUP)
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{
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for(auto header: DefaultHeaders::Instance()) {
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_headers.add(new AsyncWebHeader(header->name(), header->value()));
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}
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}
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AsyncWebServerResponse::~AsyncWebServerResponse(){
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_headers.free();
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}
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void AsyncWebServerResponse::setCode(int code){
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if(_state == RESPONSE_SETUP)
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_code = code;
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}
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void AsyncWebServerResponse::setContentLength(size_t len){
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if(_state == RESPONSE_SETUP)
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_contentLength = len;
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}
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void AsyncWebServerResponse::setContentType(const String& type){
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if(_state == RESPONSE_SETUP)
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_contentType = type;
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}
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void AsyncWebServerResponse::addHeader(const String& name, const String& value){
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_headers.add(new AsyncWebHeader(name, value));
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}
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String AsyncWebServerResponse::_assembleHead(uint8_t version){
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if(version){
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addHeader("Accept-Ranges","none");
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if(_chunked)
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addHeader("Transfer-Encoding","chunked");
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}
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String out = String();
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int bufSize = 300;
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char buf[bufSize];
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snprintf(buf, bufSize, "HTTP/1.%d %d %s\r\n", version, _code, _responseCodeToString(_code));
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out.concat(buf);
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if(_sendContentLength) {
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snprintf(buf, bufSize, "Content-Length: %d\r\n", _contentLength);
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out.concat(buf);
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}
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if(_contentType.length()) {
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snprintf(buf, bufSize, "Content-Type: %s\r\n", _contentType.c_str());
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out.concat(buf);
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}
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for(const auto& header: _headers){
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snprintf(buf, bufSize, "%s: %s\r\n", header->name().c_str(), header->value().c_str());
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out.concat(buf);
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}
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_headers.free();
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out.concat("\r\n");
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_headLength = out.length();
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return out;
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}
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bool AsyncWebServerResponse::_started() const { return _state > RESPONSE_SETUP; }
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bool AsyncWebServerResponse::_finished() const { return _state > RESPONSE_WAIT_ACK; }
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bool AsyncWebServerResponse::_failed() const { return _state == RESPONSE_FAILED; }
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bool AsyncWebServerResponse::_sourceValid() const { return false; }
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void AsyncWebServerResponse::_respond(AsyncWebServerRequest *request){ _state = RESPONSE_END; request->client()->close(); }
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size_t AsyncWebServerResponse::_ack(AsyncWebServerRequest *request, size_t len, uint32_t time){ return 0; }
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/*
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* String/Code Response
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* */
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AsyncBasicResponse::AsyncBasicResponse(int code, const String& contentType, const String& content){
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_code = code;
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_content = content;
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_contentType = contentType;
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if(_content.length()){
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_contentLength = _content.length();
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if(!_contentType.length())
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_contentType = "text/plain";
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}
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addHeader("Connection","close");
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}
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void AsyncBasicResponse::_respond(AsyncWebServerRequest *request){
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_state = RESPONSE_HEADERS;
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String out = _assembleHead(request->version());
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size_t outLen = out.length();
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size_t space = request->client()->space();
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if(!_contentLength && space >= outLen){
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_writtenLength += request->client()->write(out.c_str(), outLen);
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_state = RESPONSE_WAIT_ACK;
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} else if(_contentLength && space >= outLen + _contentLength){
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out += _content;
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outLen += _contentLength;
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_writtenLength += request->client()->write(out.c_str(), outLen);
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_state = RESPONSE_WAIT_ACK;
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} else if(space && space < outLen){
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String partial = out.substring(0, space);
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_content = out.substring(space) + _content;
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_contentLength += outLen - space;
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_writtenLength += request->client()->write(partial.c_str(), partial.length());
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_state = RESPONSE_CONTENT;
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} else if(space > outLen && space < (outLen + _contentLength)){
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size_t shift = space - outLen;
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outLen += shift;
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_sentLength += shift;
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out += _content.substring(0, shift);
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_content = _content.substring(shift);
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_writtenLength += request->client()->write(out.c_str(), outLen);
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_state = RESPONSE_CONTENT;
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} else {
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_content = out + _content;
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_contentLength += outLen;
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_state = RESPONSE_CONTENT;
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}
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}
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size_t AsyncBasicResponse::_ack(AsyncWebServerRequest *request, size_t len, uint32_t time){
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_ackedLength += len;
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if(_state == RESPONSE_CONTENT){
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size_t available = _contentLength - _sentLength;
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size_t space = request->client()->space();
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//we can fit in this packet
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if(space > available){
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_writtenLength += request->client()->write(_content.c_str(), available);
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_content = String();
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_state = RESPONSE_WAIT_ACK;
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return available;
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}
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//send some data, the rest on ack
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String out = _content.substring(0, space);
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_content = _content.substring(space);
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_sentLength += space;
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_writtenLength += request->client()->write(out.c_str(), space);
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return space;
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} else if(_state == RESPONSE_WAIT_ACK){
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if(_ackedLength >= _writtenLength){
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_state = RESPONSE_END;
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}
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}
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return 0;
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}
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/*
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* Abstract Response
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* */
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AsyncAbstractResponse::AsyncAbstractResponse(AwsTemplateProcessor callback): _callback(callback)
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{
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// In case of template processing, we're unable to determine real response size
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if(callback) {
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_contentLength = 0;
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_sendContentLength = false;
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_chunked = true;
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}
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}
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void AsyncAbstractResponse::_respond(AsyncWebServerRequest *request){
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addHeader("Connection","close");
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_head = _assembleHead(request->version());
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_state = RESPONSE_HEADERS;
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_ack(request, 0, 0);
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}
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size_t AsyncAbstractResponse::_ack(AsyncWebServerRequest *request, size_t len, uint32_t time){
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if(!_sourceValid()){
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_state = RESPONSE_FAILED;
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request->client()->close();
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return 0;
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}
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_ackedLength += len;
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size_t space = request->client()->space();
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size_t headLen = _head.length();
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if(_state == RESPONSE_HEADERS){
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if(space >= headLen){
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_state = RESPONSE_CONTENT;
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space -= headLen;
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} else {
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String out = _head.substring(0, space);
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_head = _head.substring(space);
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_writtenLength += request->client()->write(out.c_str(), out.length());
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return out.length();
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}
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}
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if(_state == RESPONSE_CONTENT){
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size_t outLen;
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if(_chunked){
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if(space <= 8){
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return 0;
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}
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outLen = space;
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} else if(!_sendContentLength){
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outLen = space;
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} else {
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outLen = ((_contentLength - _sentLength) > space)?space:(_contentLength - _sentLength);
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}
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uint8_t *buf = (uint8_t *)malloc(outLen+headLen);
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if (!buf) {
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// os_printf("_ack malloc %d failed\n", outLen+headLen);
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return 0;
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}
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if(headLen){
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memcpy(buf, _head.c_str(), _head.length());
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}
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size_t readLen = 0;
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if(_chunked){
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// HTTP 1.1 allows leading zeros in chunk length. Or spaces may be added.
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// See RFC2616 sections 2, 3.6.1.
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readLen = _fillBufferAndProcessTemplates(buf+headLen+6, outLen - 8);
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if(readLen == RESPONSE_TRY_AGAIN){
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free(buf);
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return 0;
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}
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outLen = sprintf((char*)buf+headLen, "%x", readLen) + headLen;
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while(outLen < headLen + 4) buf[outLen++] = ' ';
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buf[outLen++] = '\r';
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buf[outLen++] = '\n';
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outLen += readLen;
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buf[outLen++] = '\r';
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buf[outLen++] = '\n';
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} else {
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readLen = _fillBufferAndProcessTemplates(buf+headLen, outLen);
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if(readLen == RESPONSE_TRY_AGAIN){
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free(buf);
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return 0;
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}
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outLen = readLen + headLen;
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}
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if(headLen){
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_head = String();
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}
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if(outLen){
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_writtenLength += request->client()->write((const char*)buf, outLen);
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}
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if(_chunked){
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_sentLength += readLen;
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} else {
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_sentLength += outLen - headLen;
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}
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free(buf);
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if((_chunked && readLen == 0) || (!_sendContentLength && outLen == 0) || (!_chunked && _sentLength == _contentLength)){
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_state = RESPONSE_WAIT_ACK;
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}
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return outLen;
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} else if(_state == RESPONSE_WAIT_ACK){
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if(!_sendContentLength || _ackedLength >= _writtenLength){
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_state = RESPONSE_END;
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if(!_chunked && !_sendContentLength)
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request->client()->close(true);
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}
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}
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return 0;
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}
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size_t AsyncAbstractResponse::_readDataFromCacheOrContent(uint8_t* data, const size_t len)
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{
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// If we have something in cache, copy it to buffer
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const size_t readFromCache = std::min(len, _cache.size());
|
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if(readFromCache) {
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memcpy(data, _cache.data(), readFromCache);
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_cache.erase(_cache.begin(), _cache.begin() + readFromCache);
|
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}
|
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// If we need to read more...
|
||||
const size_t needFromFile = len - readFromCache;
|
||||
const size_t readFromContent = _fillBuffer(data + readFromCache, needFromFile);
|
||||
return readFromCache + readFromContent;
|
||||
}
|
||||
|
||||
size_t AsyncAbstractResponse::_fillBufferAndProcessTemplates(uint8_t* data, size_t len)
|
||||
{
|
||||
if(!_callback)
|
||||
return _fillBuffer(data, len);
|
||||
|
||||
const size_t originalLen = len;
|
||||
len = _readDataFromCacheOrContent(data, len);
|
||||
// Now we've read 'len' bytes, either from cache or from file
|
||||
// Search for template placeholders
|
||||
uint8_t* pTemplateStart = data;
|
||||
while((pTemplateStart < &data[len]) && (pTemplateStart = (uint8_t*)memchr(pTemplateStart, TEMPLATE_PLACEHOLDER, &data[len - 1] - pTemplateStart + 1))) { // data[0] ... data[len - 1]
|
||||
uint8_t* pTemplateEnd = (pTemplateStart < &data[len - 1]) ? (uint8_t*)memchr(pTemplateStart + 1, TEMPLATE_PLACEHOLDER, &data[len - 1] - pTemplateStart) : nullptr;
|
||||
// temporary buffer to hold parameter name
|
||||
uint8_t buf[TEMPLATE_PARAM_NAME_LENGTH + 1];
|
||||
String paramName;
|
||||
// If closing placeholder is found:
|
||||
if(pTemplateEnd) {
|
||||
// prepare argument to callback
|
||||
const size_t paramNameLength = std::min(sizeof(buf) - 1, (unsigned int)(pTemplateEnd - pTemplateStart - 1));
|
||||
if(paramNameLength) {
|
||||
memcpy(buf, pTemplateStart + 1, paramNameLength);
|
||||
buf[paramNameLength] = 0;
|
||||
paramName = String(reinterpret_cast<char*>(buf));
|
||||
} else { // double percent sign encountered, this is single percent sign escaped.
|
||||
// remove the 2nd percent sign
|
||||
memmove(pTemplateEnd, pTemplateEnd + 1, &data[len] - pTemplateEnd - 1);
|
||||
len += _readDataFromCacheOrContent(&data[len - 1], 1) - 1;
|
||||
++pTemplateStart;
|
||||
}
|
||||
} else if(&data[len - 1] - pTemplateStart + 1 < TEMPLATE_PARAM_NAME_LENGTH + 2) { // closing placeholder not found, check if it's in the remaining file data
|
||||
memcpy(buf, pTemplateStart + 1, &data[len - 1] - pTemplateStart);
|
||||
const size_t readFromCacheOrContent = _readDataFromCacheOrContent(buf + (&data[len - 1] - pTemplateStart), TEMPLATE_PARAM_NAME_LENGTH + 2 - (&data[len - 1] - pTemplateStart + 1));
|
||||
if(readFromCacheOrContent) {
|
||||
pTemplateEnd = (uint8_t*)memchr(buf + (&data[len - 1] - pTemplateStart), TEMPLATE_PLACEHOLDER, readFromCacheOrContent);
|
||||
if(pTemplateEnd) {
|
||||
// prepare argument to callback
|
||||
*pTemplateEnd = 0;
|
||||
paramName = String(reinterpret_cast<char*>(buf));
|
||||
// Copy remaining read-ahead data into cache
|
||||
_cache.insert(_cache.begin(), pTemplateEnd + 1, buf + (&data[len - 1] - pTemplateStart) + readFromCacheOrContent);
|
||||
pTemplateEnd = &data[len - 1];
|
||||
}
|
||||
else // closing placeholder not found in file data, store found percent symbol as is and advance to the next position
|
||||
{
|
||||
// but first, store read file data in cache
|
||||
_cache.insert(_cache.begin(), buf + (&data[len - 1] - pTemplateStart), buf + (&data[len - 1] - pTemplateStart) + readFromCacheOrContent);
|
||||
++pTemplateStart;
|
||||
}
|
||||
}
|
||||
else // closing placeholder not found in content data, store found percent symbol as is and advance to the next position
|
||||
++pTemplateStart;
|
||||
}
|
||||
else // closing placeholder not found in content data, store found percent symbol as is and advance to the next position
|
||||
++pTemplateStart;
|
||||
if(paramName.length()) {
|
||||
// call callback and replace with result.
|
||||
// Everything in range [pTemplateStart, pTemplateEnd] can be safely replaced with parameter value.
|
||||
// Data after pTemplateEnd may need to be moved.
|
||||
// The first byte of data after placeholder is located at pTemplateEnd + 1.
|
||||
// It should be located at pTemplateStart + numBytesCopied (to begin right after inserted parameter value).
|
||||
const String paramValue(_callback(paramName));
|
||||
const char* pvstr = paramValue.c_str();
|
||||
const unsigned int pvlen = paramValue.length();
|
||||
const size_t numBytesCopied = std::min(pvlen, static_cast<unsigned int>(&data[originalLen - 1] - pTemplateStart + 1));
|
||||
// make room for param value
|
||||
// 1. move extra data to cache if parameter value is longer than placeholder AND if there is no room to store
|
||||
if((pTemplateEnd + 1 < pTemplateStart + numBytesCopied) && (originalLen - (pTemplateStart + numBytesCopied - pTemplateEnd - 1) < len)) {
|
||||
_cache.insert(_cache.begin(), &data[originalLen - (pTemplateStart + numBytesCopied - pTemplateEnd - 1)], &data[len]);
|
||||
//2. parameter value is longer than placeholder text, push the data after placeholder which not saved into cache further to the end
|
||||
memmove(pTemplateStart + numBytesCopied, pTemplateEnd + 1, &data[originalLen] - pTemplateStart - numBytesCopied);
|
||||
len = originalLen; // fix issue with truncated data, not sure if it has any side effects
|
||||
} else if(pTemplateEnd + 1 != pTemplateStart + numBytesCopied)
|
||||
//2. Either parameter value is shorter than placeholder text OR there is enough free space in buffer to fit.
|
||||
// Move the entire data after the placeholder
|
||||
memmove(pTemplateStart + numBytesCopied, pTemplateEnd + 1, &data[len] - pTemplateEnd - 1);
|
||||
// 3. replace placeholder with actual value
|
||||
memcpy(pTemplateStart, pvstr, numBytesCopied);
|
||||
// If result is longer than buffer, copy the remainder into cache (this could happen only if placeholder text itself did not fit entirely in buffer)
|
||||
if(numBytesCopied < pvlen) {
|
||||
_cache.insert(_cache.begin(), pvstr + numBytesCopied, pvstr + pvlen);
|
||||
} else if(pTemplateStart + numBytesCopied < pTemplateEnd + 1) { // result is copied fully; if result is shorter than placeholder text...
|
||||
// there is some free room, fill it from cache
|
||||
const size_t roomFreed = pTemplateEnd + 1 - pTemplateStart - numBytesCopied;
|
||||
const size_t totalFreeRoom = originalLen - len + roomFreed;
|
||||
len += _readDataFromCacheOrContent(&data[len - roomFreed], totalFreeRoom) - roomFreed;
|
||||
} else { // result is copied fully; it is longer than placeholder text
|
||||
const size_t roomTaken = pTemplateStart + numBytesCopied - pTemplateEnd - 1;
|
||||
len = std::min(len + roomTaken, originalLen);
|
||||
}
|
||||
}
|
||||
} // while(pTemplateStart)
|
||||
return len;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* File Response
|
||||
* */
|
||||
|
||||
AsyncFileResponse::~AsyncFileResponse(){
|
||||
if(_content)
|
||||
_content.close();
|
||||
}
|
||||
|
||||
void AsyncFileResponse::_setContentType(const String& path){
|
||||
if (path.endsWith(".html")) _contentType = "text/html";
|
||||
else if (path.endsWith(".htm")) _contentType = "text/html";
|
||||
else if (path.endsWith(".css")) _contentType = "text/css";
|
||||
else if (path.endsWith(".json")) _contentType = "application/json";
|
||||
else if (path.endsWith(".js")) _contentType = "application/javascript";
|
||||
else if (path.endsWith(".png")) _contentType = "image/png";
|
||||
else if (path.endsWith(".gif")) _contentType = "image/gif";
|
||||
else if (path.endsWith(".jpg")) _contentType = "image/jpeg";
|
||||
else if (path.endsWith(".ico")) _contentType = "image/x-icon";
|
||||
else if (path.endsWith(".svg")) _contentType = "image/svg+xml";
|
||||
else if (path.endsWith(".eot")) _contentType = "font/eot";
|
||||
else if (path.endsWith(".woff")) _contentType = "font/woff";
|
||||
else if (path.endsWith(".woff2")) _contentType = "font/woff2";
|
||||
else if (path.endsWith(".ttf")) _contentType = "font/ttf";
|
||||
else if (path.endsWith(".xml")) _contentType = "text/xml";
|
||||
else if (path.endsWith(".pdf")) _contentType = "application/pdf";
|
||||
else if (path.endsWith(".zip")) _contentType = "application/zip";
|
||||
else if(path.endsWith(".gz")) _contentType = "application/x-gzip";
|
||||
else _contentType = "text/plain";
|
||||
}
|
||||
|
||||
AsyncFileResponse::AsyncFileResponse(FS &fs, const String& path, const String& contentType, bool download, AwsTemplateProcessor callback): AsyncAbstractResponse(callback){
|
||||
_code = 200;
|
||||
_path = path;
|
||||
|
||||
if(!download && !fs.exists(_path) && fs.exists(_path+".gz")){
|
||||
_path = _path+".gz";
|
||||
addHeader("Content-Encoding", "gzip");
|
||||
_callback = nullptr; // Unable to process zipped templates
|
||||
_sendContentLength = true;
|
||||
_chunked = false;
|
||||
}
|
||||
|
||||
_content = fs.open(_path, "r");
|
||||
_contentLength = _content.size();
|
||||
|
||||
if(contentType == "")
|
||||
_setContentType(path);
|
||||
else
|
||||
_contentType = contentType;
|
||||
|
||||
int filenameStart = path.lastIndexOf('/') + 1;
|
||||
char buf[26+path.length()-filenameStart];
|
||||
char* filename = (char*)path.c_str() + filenameStart;
|
||||
|
||||
if(download) {
|
||||
// set filename and force download
|
||||
snprintf(buf, sizeof (buf), "attachment; filename=\"%s\"", filename);
|
||||
} else {
|
||||
// set filename and force rendering
|
||||
snprintf(buf, sizeof (buf), "inline; filename=\"%s\"", filename);
|
||||
}
|
||||
addHeader("Content-Disposition", buf);
|
||||
}
|
||||
|
||||
AsyncFileResponse::AsyncFileResponse(File content, const String& path, const String& contentType, bool download, AwsTemplateProcessor callback): AsyncAbstractResponse(callback){
|
||||
_code = 200;
|
||||
_path = path;
|
||||
|
||||
if(!download && String(content.name()).endsWith(".gz") && !path.endsWith(".gz")){
|
||||
addHeader("Content-Encoding", "gzip");
|
||||
_callback = nullptr; // Unable to process gzipped templates
|
||||
_sendContentLength = true;
|
||||
_chunked = false;
|
||||
}
|
||||
|
||||
_content = content;
|
||||
_contentLength = _content.size();
|
||||
|
||||
if(contentType == "")
|
||||
_setContentType(path);
|
||||
else
|
||||
_contentType = contentType;
|
||||
|
||||
int filenameStart = path.lastIndexOf('/') + 1;
|
||||
char buf[26+path.length()-filenameStart];
|
||||
char* filename = (char*)path.c_str() + filenameStart;
|
||||
|
||||
if(download) {
|
||||
snprintf(buf, sizeof (buf), "attachment; filename=\"%s\"", filename);
|
||||
} else {
|
||||
snprintf(buf, sizeof (buf), "inline; filename=\"%s\"", filename);
|
||||
}
|
||||
addHeader("Content-Disposition", buf);
|
||||
}
|
||||
|
||||
size_t AsyncFileResponse::_fillBuffer(uint8_t *data, size_t len){
|
||||
return _content.read(data, len);
|
||||
}
|
||||
|
||||
/*
|
||||
* Stream Response
|
||||
* */
|
||||
|
||||
AsyncStreamResponse::AsyncStreamResponse(Stream &stream, const String& contentType, size_t len, AwsTemplateProcessor callback): AsyncAbstractResponse(callback) {
|
||||
_code = 200;
|
||||
_content = &stream;
|
||||
_contentLength = len;
|
||||
_contentType = contentType;
|
||||
}
|
||||
|
||||
size_t AsyncStreamResponse::_fillBuffer(uint8_t *data, size_t len){
|
||||
size_t available = _content->available();
|
||||
size_t outLen = (available > len)?len:available;
|
||||
size_t i;
|
||||
for(i=0;i<outLen;i++)
|
||||
data[i] = _content->read();
|
||||
return outLen;
|
||||
}
|
||||
|
||||
/*
|
||||
* Callback Response
|
||||
* */
|
||||
|
||||
AsyncCallbackResponse::AsyncCallbackResponse(const String& contentType, size_t len, AwsResponseFiller callback, AwsTemplateProcessor templateCallback): AsyncAbstractResponse(templateCallback) {
|
||||
_code = 200;
|
||||
_content = callback;
|
||||
_contentLength = len;
|
||||
if(!len)
|
||||
_sendContentLength = false;
|
||||
_contentType = contentType;
|
||||
_filledLength = 0;
|
||||
}
|
||||
|
||||
size_t AsyncCallbackResponse::_fillBuffer(uint8_t *data, size_t len){
|
||||
size_t ret = _content(data, len, _filledLength);
|
||||
if(ret != RESPONSE_TRY_AGAIN){
|
||||
_filledLength += ret;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
* Chunked Response
|
||||
* */
|
||||
|
||||
AsyncChunkedResponse::AsyncChunkedResponse(const String& contentType, AwsResponseFiller callback, AwsTemplateProcessor processorCallback): AsyncAbstractResponse(processorCallback) {
|
||||
_code = 200;
|
||||
_content = callback;
|
||||
_contentLength = 0;
|
||||
_contentType = contentType;
|
||||
_sendContentLength = false;
|
||||
_chunked = true;
|
||||
_filledLength = 0;
|
||||
}
|
||||
|
||||
size_t AsyncChunkedResponse::_fillBuffer(uint8_t *data, size_t len){
|
||||
size_t ret = _content(data, len, _filledLength);
|
||||
if(ret != RESPONSE_TRY_AGAIN){
|
||||
_filledLength += ret;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
* Progmem Response
|
||||
* */
|
||||
|
||||
AsyncProgmemResponse::AsyncProgmemResponse(int code, const String& contentType, const uint8_t * content, size_t len, AwsTemplateProcessor callback): AsyncAbstractResponse(callback) {
|
||||
_code = code;
|
||||
_content = content;
|
||||
_contentType = contentType;
|
||||
_contentLength = len;
|
||||
_readLength = 0;
|
||||
}
|
||||
|
||||
size_t AsyncProgmemResponse::_fillBuffer(uint8_t *data, size_t len){
|
||||
size_t left = _contentLength - _readLength;
|
||||
if (left > len) {
|
||||
memcpy_P(data, _content + _readLength, len);
|
||||
_readLength += len;
|
||||
return len;
|
||||
}
|
||||
memcpy_P(data, _content + _readLength, left);
|
||||
_readLength += left;
|
||||
return left;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Response Stream (You can print/write/printf to it, up to the contentLen bytes)
|
||||
* */
|
||||
|
||||
AsyncResponseStream::AsyncResponseStream(const String& contentType, size_t bufferSize){
|
||||
_code = 200;
|
||||
_contentLength = 0;
|
||||
_contentType = contentType;
|
||||
_content = new cbuf(bufferSize);
|
||||
}
|
||||
|
||||
AsyncResponseStream::~AsyncResponseStream(){
|
||||
delete _content;
|
||||
}
|
||||
|
||||
size_t AsyncResponseStream::_fillBuffer(uint8_t *buf, size_t maxLen){
|
||||
return _content->read((char*)buf, maxLen);
|
||||
}
|
||||
|
||||
size_t AsyncResponseStream::write(const uint8_t *data, size_t len){
|
||||
if(_started())
|
||||
return 0;
|
||||
|
||||
if(len > _content->room()){
|
||||
size_t needed = len - _content->room();
|
||||
_content->resizeAdd(needed);
|
||||
}
|
||||
size_t written = _content->write((const char*)data, len);
|
||||
_contentLength += written;
|
||||
return written;
|
||||
}
|
||||
|
||||
size_t AsyncResponseStream::write(uint8_t data){
|
||||
return write(&data, 1);
|
||||
}
|
||||
Reference in New Issue
Block a user