forked from me-no-dev/ESPAsyncWebServer
748 lines
21 KiB
C++
748 lines
21 KiB
C++
/*
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* WebServerClient.cpp
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*
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* Created on: 18.12.2015 г.
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* Author: ficeto
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*/
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#include "ESPAsyncWebServer.h"
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#include "AsyncWebServerResponseImpl.h"
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#include <libb64/cencode.h>
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#define __is_param_char(c) ((c) && ((c) != '{') && ((c) != '[') && ((c) != '&') && ((c) != '='))
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enum { PARSE_REQ_START, PARSE_REQ_HEADERS, PARSE_REQ_BODY, PARSE_REQ_END, PARSE_REQ_FAIL };
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AsyncWebServerRequest::AsyncWebServerRequest(AsyncWebServer* s, AsyncClient* c)
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: _client(c)
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, _server(s)
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, _handler(NULL)
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, _response(NULL)
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, _interestingHeaders(new StringArray())
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, _temp()
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, _parseState(0)
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, _method(HTTP_ANY)
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, _url()
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, _host()
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, _contentType()
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, _boundary()
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, _authorization()
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, _isMultipart(false)
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, _isPlainPost(false)
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, _expectingContinue(false)
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, _contentLength(0)
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, _parsedLength(0)
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, _headers(NULL)
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, _params(NULL)
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, _multiParseState(0)
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, _boundaryPosition(0)
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, _itemStartIndex(0)
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, _itemSize(0)
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, _itemName()
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, _itemFilename()
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, _itemType()
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, _itemValue()
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, _itemBuffer(0)
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, _itemBufferIndex(0)
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, _itemIsFile(false)
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{
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c->onError([](void *r, AsyncClient* c, int8_t error){ AsyncWebServerRequest *req = (AsyncWebServerRequest*)r; req->_onError(error); }, this);
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c->onAck([](void *r, AsyncClient* c, size_t len, uint32_t time){ AsyncWebServerRequest *req = (AsyncWebServerRequest*)r; req->_onAck(len, time); }, this);
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c->onDisconnect([](void *r, AsyncClient* c){ AsyncWebServerRequest *req = (AsyncWebServerRequest*)r; req->_onDisconnect(); }, this);
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c->onTimeout([](void *r, AsyncClient* c, uint32_t time){ AsyncWebServerRequest *req = (AsyncWebServerRequest*)r; req->_onTimeout(time); }, this);
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c->onData([](void *r, AsyncClient* c, void *buf, size_t len){ AsyncWebServerRequest *req = (AsyncWebServerRequest*)r; req->_onData(buf, len); }, this);
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//c->onPoll([](void *r, AsyncClient* c){ AsyncWebServerRequest *req = (AsyncWebServerRequest*)r; req->_onPoll(); }, this);
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}
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AsyncWebServerRequest::~AsyncWebServerRequest(){
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while(_headers != NULL){
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AsyncWebHeader *h = _headers;
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_headers = h->next;
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delete h;
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}
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while(_params != NULL){
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AsyncWebParameter *p = _params;
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_params = p->next;
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delete p;
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}
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_interestingHeaders->free();
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delete _interestingHeaders;
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if(_response != NULL){
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delete _response;
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}
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}
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void AsyncWebServerRequest::_onData(void *buf, size_t len){
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if(_parseState < PARSE_REQ_BODY){
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size_t i;
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for(i=0; i<len; i++){
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if(_parseState < PARSE_REQ_BODY)
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_parseByte(((uint8_t*)buf)[i]);
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else
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return _onData((void *)((uint8_t*)buf+i), len-i);
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}
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} else if(_parseState == PARSE_REQ_BODY){
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if(_isMultipart){
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size_t i;
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for(i=0; i<len; i++){
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_parseMultipartPostByte(((uint8_t*)buf)[i], i == len - 1);
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_parsedLength++;
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}
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} else {
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if(_parsedLength == 0){
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if(_contentType == "application/x-www-form-urlencoded"){
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_isPlainPost = true;
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} else if(_contentType == "text/plain" && __is_param_char(((char*)buf)[0])){
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size_t i = 0;
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while (i<len && __is_param_char(((char*)buf)[i++]));
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if(i < len && ((char*)buf)[i-1] == '='){
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_isPlainPost = true;
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}
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}
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}
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if(!_isPlainPost) {
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if(_handler) _handler->handleBody(this, (uint8_t*)buf, len, _parsedLength, _contentLength);
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_parsedLength += len;
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} else {
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size_t i;
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for(i=0; i<len; i++){
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_parsedLength++;
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_parsePlainPostChar(((uint8_t*)buf)[i]);
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}
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}
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}
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if(_parsedLength == _contentLength){
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_parseState = PARSE_REQ_END;
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if(_handler) _handler->handleRequest(this);
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else send(501);
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return;
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}
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}
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}
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void AsyncWebServerRequest::_onPoll(){
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//os_printf("p\n");
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}
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void AsyncWebServerRequest::_onAck(size_t len, uint32_t time){
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//os_printf("a:%u:%u\n", len, time);
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if(_response != NULL){
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if(!_response->_finished()){
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_response->_ack(this, len, time);
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} else {
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AsyncWebServerResponse* r = _response;
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_response = NULL;
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delete r;
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}
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}
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}
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void AsyncWebServerRequest::_onError(int8_t error){
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os_printf("e:%d:%u\n", error, _client->state());
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}
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void AsyncWebServerRequest::_onTimeout(uint32_t time){
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os_printf("t:%u\n", time);
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_client->close();
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}
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void AsyncWebServerRequest::_onDisconnect(){
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//os_printf("d\n");
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_client->free();
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delete _client;
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_server->_handleDisconnect(this);
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}
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void AsyncWebServerRequest::_addParam(AsyncWebParameter *p){
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if(_params == NULL)
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_params = p;
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else {
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AsyncWebParameter *ps = _params;
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while(ps->next != NULL) ps = ps->next;
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ps->next = p;
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}
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}
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void AsyncWebServerRequest::_addGetParam(String param){
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param = _urlDecode(param);
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String name = param;
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String value = "";
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if(param.indexOf('=') > 0){
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name = param.substring(0, param.indexOf('='));
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value = param.substring(param.indexOf('=') + 1);
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}
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_addParam(new AsyncWebParameter(name, value));
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}
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bool AsyncWebServerRequest::_parseReqHead(){
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String m = _temp.substring(0, _temp.indexOf(' '));
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if(m == "GET"){
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_method = HTTP_GET;
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} else if(m == "POST"){
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_method = HTTP_POST;
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} else if(m == "DELETE"){
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_method = HTTP_DELETE;
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} else if(m == "PUT"){
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_method = HTTP_PUT;
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} else if(m == "PATCH"){
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_method = HTTP_PATCH;
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} else if(m == "HEAD"){
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_method = HTTP_HEAD;
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} else if(m == "OPTIONS"){
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_method = HTTP_OPTIONS;
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}
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_temp = _temp.substring(_temp.indexOf(' ')+1);
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String u = _temp.substring(0, _temp.indexOf(' '));
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String g = String();
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if(u.indexOf('?') > 0){
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g = u.substring(u.indexOf('?') + 1);
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u = u.substring(0, u.indexOf('?'));
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}
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_url = u;
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if(g.length()){
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while(true){
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if(g.length() == 0)
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break;
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if(g.indexOf('&') > 0){
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_addGetParam(g.substring(0, g.indexOf('&')));
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g = g.substring(g.indexOf('&') + 1);
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} else {
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_addGetParam(g);
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break;
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}
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}
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}
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_temp = String();
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return true;
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}
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bool AsyncWebServerRequest::_parseReqHeader(){
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if(_temp.indexOf(':')){
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AsyncWebHeader *h = new AsyncWebHeader(_temp);
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if(h->name() == "Host"){
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_host = h->value();
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delete h;
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_server->_handleRequest(this);
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} else if(h->name() == "Content-Type"){
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if (h->value().startsWith("multipart/")){
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_boundary = h->value().substring(h->value().indexOf('=')+1);
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_contentType = h->value().substring(0, h->value().indexOf(';'));
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_isMultipart = true;
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} else {
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_contentType = h->value();
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}
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delete h;
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} else if(h->name() == "Content-Length"){
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_contentLength = atoi(h->value().c_str());
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delete h;
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} else if(h->name() == "Expect" && h->value() == "100-continue"){
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_expectingContinue = true;
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delete h;
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} else if(h->name() == "Authorization"){
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if(h->value().startsWith("Basic")){
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_authorization = h->value().substring(6);
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}
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delete h;
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} else {
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if(_interestingHeaders->contains(h->name()) || _interestingHeaders->contains("ANY")){
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if(_headers == NULL)
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_headers = h;
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else {
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AsyncWebHeader *hs = _headers;
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while(hs->next != NULL) hs = hs->next;
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hs->next = h;
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}
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} else
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delete h;
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}
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}
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_temp = String();
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return true;
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}
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void AsyncWebServerRequest::_parsePlainPostChar(uint8_t data){
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if(data && (char)data != '\r' && (char)data != '\n' && (char)data != '&')
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_temp += (char)data;
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if(!data || (char)data == '\n' || (char)data == '&' || _parsedLength == _contentLength){
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_temp = _urlDecode(_temp);
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String name = _temp;
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String value = "";
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if(_temp.indexOf('=') > 0){
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name = _temp.substring(0, _temp.indexOf('='));
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value = _temp.substring(_temp.indexOf('=') + 1);
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}
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_addParam(new AsyncWebParameter(name, value, true));
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_temp = String();
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}
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}
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void AsyncWebServerRequest::_handleUploadByte(uint8_t data, bool last){
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_itemBuffer[_itemBufferIndex++] = data;
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if(last){
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if(_handler)
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_handler->handleUpload(this, _itemFilename, _itemSize - _itemBufferIndex, _itemBuffer, _itemBufferIndex, false);
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_itemBufferIndex = 0;
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}
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}
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enum {
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EXPECT_BOUNDARY,
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PARSE_HEADERS,
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WAIT_FOR_RETURN1,
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EXPECT_FEED1,
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EXPECT_DASH1,
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EXPECT_DASH2,
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BOUNDARY_OR_DATA,
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DASH3_OR_RETURN2,
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EXPECT_FEED2,
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PARSING_FINISHED,
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PARSE_ERROR
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};
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void AsyncWebServerRequest::_parseMultipartPostByte(uint8_t data, bool last){
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#define itemWriteByte(b) do { _itemSize++; if(_itemIsFile) _handleUploadByte(b, last); else _itemValue+=(char)(b); } while(0)
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if(!_parsedLength){
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_multiParseState = EXPECT_BOUNDARY;
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_temp = String();
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_itemName = String();
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_itemFilename = String();
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_itemType = String();
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}
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if(_multiParseState == EXPECT_BOUNDARY){
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if(_parsedLength < 2 && data != '-'){
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_multiParseState = PARSE_ERROR;
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return;
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} else if(_parsedLength - 2 < _boundary.length() && _boundary.c_str()[_parsedLength - 2] != data){
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_multiParseState = PARSE_ERROR;
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return;
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} else if(_parsedLength - 2 == _boundary.length() && data != '\r'){
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_multiParseState = PARSE_ERROR;
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return;
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} else if(_parsedLength - 3 == _boundary.length()){
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if(data != '\n'){
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_multiParseState = PARSE_ERROR;
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return;
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}
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_multiParseState = PARSE_HEADERS;
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_itemIsFile = false;
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}
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} else if(_multiParseState == PARSE_HEADERS){
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if((char)data != '\r' && (char)data != '\n')
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_temp += (char)data;
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if((char)data == '\n'){
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if(_temp.length()){
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if(_temp.startsWith("Content-Type:")){
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_itemType = _temp.substring(14);
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_itemIsFile = true;
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} else if(_temp.startsWith("Content-Disposition:")){
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_temp = _temp.substring(_temp.indexOf(';') + 2);
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while(_temp.indexOf(';') > 0){
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String name = _temp.substring(0, _temp.indexOf('='));
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String nameVal = _temp.substring(_temp.indexOf('=') + 2, _temp.indexOf(';') - 1);
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if(name == "name"){
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_itemName = nameVal;
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} else if(name == "filename"){
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_itemFilename = nameVal;
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_itemIsFile = true;
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}
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_temp = _temp.substring(_temp.indexOf(';') + 2);
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}
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String name = _temp.substring(0, _temp.indexOf('='));
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String nameVal = _temp.substring(_temp.indexOf('=') + 2, _temp.length() - 1);
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if(name == "name"){
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_itemName = nameVal;
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} else if(name == "filename"){
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_itemFilename = nameVal;
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_itemIsFile = true;
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}
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}
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_temp = String();
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} else {
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_multiParseState = WAIT_FOR_RETURN1;
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//value starts from here
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_itemSize = 0;
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_itemStartIndex = _parsedLength;
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_itemValue = String();
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if(_itemIsFile){
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if(_itemBuffer)
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free(_itemBuffer);
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_itemBuffer = (uint8_t*)malloc(1460);
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_itemBufferIndex = 0;
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}
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}
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}
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} else if(_multiParseState == WAIT_FOR_RETURN1){
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if(data != '\r'){
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itemWriteByte(data);
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} else {
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_multiParseState = EXPECT_FEED1;
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}
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} else if(_multiParseState == EXPECT_FEED1){
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if(data != '\n'){
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_multiParseState = WAIT_FOR_RETURN1;
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itemWriteByte('\r'); itemWriteByte(data);
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} else {
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_multiParseState = EXPECT_DASH1;
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}
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} else if(_multiParseState == EXPECT_DASH1){
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if(data != '-'){
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_multiParseState = WAIT_FOR_RETURN1;
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itemWriteByte('\r'); itemWriteByte('\n'); itemWriteByte(data);
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} else {
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_multiParseState = EXPECT_DASH2;
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}
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} else if(_multiParseState == EXPECT_DASH2){
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if(data != '-'){
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_multiParseState = WAIT_FOR_RETURN1;
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itemWriteByte('\r'); itemWriteByte('\n'); itemWriteByte('-'); itemWriteByte(data);
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} else {
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_multiParseState = BOUNDARY_OR_DATA;
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_boundaryPosition = 0;
|
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}
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} else if(_multiParseState == BOUNDARY_OR_DATA){
|
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if(_boundaryPosition < _boundary.length() && _boundary.c_str()[_boundaryPosition] != data){
|
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_multiParseState = WAIT_FOR_RETURN1;
|
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itemWriteByte('\r'); itemWriteByte('\n'); itemWriteByte('-'); itemWriteByte('-');
|
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uint8_t i;
|
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for(i=0; i<_boundaryPosition; i++)
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itemWriteByte(_boundary.c_str()[i]);
|
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itemWriteByte(data);
|
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} else if(_boundaryPosition == _boundary.length() - 1){
|
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_multiParseState = DASH3_OR_RETURN2;
|
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if(!_itemIsFile){
|
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_addParam(new AsyncWebParameter(_itemName, _itemValue, true));
|
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} else {
|
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if(_itemSize){
|
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if(_handler) _handler->handleUpload(this, _itemFilename, _itemSize - _itemBufferIndex, _itemBuffer, _itemBufferIndex, true);
|
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_itemBufferIndex = 0;
|
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_addParam(new AsyncWebParameter(_itemName, _itemFilename, true, true, _itemSize));
|
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}
|
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free(_itemBuffer);
|
||
}
|
||
|
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} else {
|
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_boundaryPosition++;
|
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}
|
||
} else if(_multiParseState == DASH3_OR_RETURN2){
|
||
os_printf("X:%u:'%c'\n",_contentLength - _parsedLength - 4,data);
|
||
if(data == '\r'){
|
||
_multiParseState = EXPECT_FEED2;
|
||
} else if(data == '-' && _contentLength == (_parsedLength + 4)){
|
||
_multiParseState = PARSING_FINISHED;
|
||
} else {
|
||
_multiParseState = WAIT_FOR_RETURN1;
|
||
itemWriteByte('\r'); itemWriteByte('\n'); itemWriteByte('-'); itemWriteByte('-');
|
||
uint8_t i; for(i=0; i<_boundary.length(); i++) itemWriteByte(_boundary.c_str()[i]);
|
||
itemWriteByte(data);
|
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}
|
||
} else if(_multiParseState == EXPECT_FEED2){
|
||
if(data == '\n'){
|
||
_multiParseState = PARSE_HEADERS;
|
||
_itemIsFile = false;
|
||
} else {
|
||
_multiParseState = WAIT_FOR_RETURN1;
|
||
itemWriteByte('\r'); itemWriteByte('\n'); itemWriteByte('-'); itemWriteByte('-');
|
||
uint8_t i; for(i=0; i<_boundary.length(); i++) itemWriteByte(_boundary.c_str()[i]);
|
||
itemWriteByte('\r'); itemWriteByte(data);
|
||
}
|
||
}
|
||
}
|
||
|
||
void AsyncWebServerRequest::_parseLine(){
|
||
if(_parseState == PARSE_REQ_START){
|
||
if(!_temp.length()){
|
||
_parseState = PARSE_REQ_FAIL;
|
||
_client->close();
|
||
} else {
|
||
_parseReqHead();
|
||
_parseState = PARSE_REQ_HEADERS;
|
||
}
|
||
return;
|
||
}
|
||
|
||
if(_parseState == PARSE_REQ_HEADERS){
|
||
if(!_temp.length()){
|
||
//end of headers
|
||
if(_expectingContinue){
|
||
const char * response = "HTTP/1.1 100 Continue\r\n\r\n";
|
||
_client->write(response, os_strlen(response));
|
||
}
|
||
if(_contentLength){
|
||
_parseState = PARSE_REQ_BODY;
|
||
} else {
|
||
_parseState = PARSE_REQ_END;
|
||
if(_handler) _handler->handleRequest(this);
|
||
else send(501);
|
||
}
|
||
} else _parseReqHeader();
|
||
}
|
||
}
|
||
|
||
void AsyncWebServerRequest::_parseByte(uint8_t data){
|
||
if((char)data != '\r' && (char)data != '\n')
|
||
_temp += (char)data;
|
||
if((char)data == '\n')
|
||
_parseLine();
|
||
}
|
||
|
||
|
||
|
||
int AsyncWebServerRequest::headers(){
|
||
int i = 0;
|
||
AsyncWebHeader* h = _headers;
|
||
while(h != NULL){
|
||
i++; h = h->next;
|
||
}
|
||
return i;
|
||
}
|
||
|
||
bool AsyncWebServerRequest::hasHeader(String name){
|
||
AsyncWebHeader* h = _headers;
|
||
while(h != NULL){
|
||
if(h->name() == name)
|
||
return true;
|
||
h = h->next;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
AsyncWebHeader* AsyncWebServerRequest::getHeader(String name){
|
||
AsyncWebHeader* h = _headers;
|
||
while(h != NULL){
|
||
if(h->name() == name)
|
||
return h;
|
||
h = h->next;
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
AsyncWebHeader* AsyncWebServerRequest::getHeader(int num){
|
||
int i = 0;
|
||
AsyncWebHeader* h = _headers;
|
||
while(h != NULL){
|
||
if(num == i++)
|
||
return h;
|
||
h = h->next;
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
int AsyncWebServerRequest::params(){
|
||
int i = 0;
|
||
AsyncWebParameter* h = _params;
|
||
while(h != NULL){
|
||
i++; h = h->next;
|
||
}
|
||
return i;
|
||
}
|
||
|
||
bool AsyncWebServerRequest::hasParam(String name, bool post, bool file){
|
||
AsyncWebParameter* h = _params;
|
||
while(h != NULL){
|
||
if(h->name() == name && h->isPost() == post && h->isFile() == file)
|
||
return true;
|
||
h = h->next;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
AsyncWebParameter* AsyncWebServerRequest::getParam(String name, bool post, bool file){
|
||
AsyncWebParameter* h = _params;
|
||
while(h != NULL){
|
||
if(h->name() == name && h->isPost() == post && h->isFile() == file)
|
||
return h;
|
||
h = h->next;
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
AsyncWebParameter* AsyncWebServerRequest::getParam(int num){
|
||
int i = 0;
|
||
AsyncWebParameter* h = _params;
|
||
while(h != NULL){
|
||
if(num == i++)
|
||
return h;
|
||
h = h->next;
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
void AsyncWebServerRequest::addInterestingHeader(String name){
|
||
if(!_interestingHeaders->contains(name)) _interestingHeaders->add(name);
|
||
}
|
||
|
||
|
||
void AsyncWebServerRequest::send(AsyncWebServerResponse *response){
|
||
_response = response;
|
||
_response->_respond(this);
|
||
}
|
||
|
||
|
||
|
||
AsyncWebServerResponse * AsyncWebServerRequest::beginResponse(int code, String contentType, String content){
|
||
return new AsyncBasicResponse(code, contentType, content);
|
||
}
|
||
|
||
AsyncWebServerResponse * AsyncWebServerRequest::beginResponse(FS &fs, String path, String contentType, bool download){
|
||
if(fs.exists(path) || (!download && fs.exists(path+".gz")))
|
||
return new AsyncFileResponse(fs, path, contentType, download);
|
||
return NULL;
|
||
}
|
||
|
||
AsyncWebServerResponse * AsyncWebServerRequest::beginResponse(Stream &stream, String contentType, size_t len){
|
||
return new AsyncStreamResponse(stream, contentType, len);
|
||
}
|
||
|
||
AsyncWebServerResponse * AsyncWebServerRequest::beginResponse(String contentType, size_t len, AwsResponseFiller callback){
|
||
return new AsyncCallbackResponse(contentType, len, callback);
|
||
}
|
||
|
||
void AsyncWebServerRequest::send(int code, String contentType, String content){
|
||
send(new AsyncBasicResponse(code, contentType, content));
|
||
}
|
||
|
||
void AsyncWebServerRequest::send(FS &fs, String path, String contentType, bool download){
|
||
if(fs.exists(path) || (!download && fs.exists(path+".gz"))){
|
||
send(new AsyncFileResponse(fs, path, contentType, download));
|
||
} else send(404);
|
||
}
|
||
|
||
void AsyncWebServerRequest::send(Stream &stream, String contentType, size_t len){
|
||
send(new AsyncStreamResponse(stream, contentType, len));
|
||
}
|
||
|
||
void AsyncWebServerRequest::send(String contentType, size_t len, AwsResponseFiller callback){
|
||
send(new AsyncCallbackResponse(contentType, len, callback));
|
||
}
|
||
|
||
|
||
bool AsyncWebServerRequest::authenticate(const char * username, const char * password){
|
||
if(_authorization.length()){
|
||
char toencodeLen = strlen(username)+strlen(password)+1;
|
||
char *toencode = new char[toencodeLen];
|
||
if(toencode == NULL){
|
||
return false;
|
||
}
|
||
char *encoded = new char[base64_encode_expected_len(toencodeLen)+1];
|
||
if(encoded == NULL){
|
||
delete[] toencode;
|
||
return false;
|
||
}
|
||
sprintf(toencode, "%s:%s", username, password);
|
||
if(base64_encode_chars(toencode, toencodeLen, encoded) > 0 && _authorization.equals(encoded)){
|
||
delete[] toencode;
|
||
delete[] encoded;
|
||
return true;
|
||
}
|
||
delete[] toencode;
|
||
delete[] encoded;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
bool AsyncWebServerRequest::authenticate(const char * hash){
|
||
return (_authorization.length() && (_authorization == String(hash)));
|
||
}
|
||
|
||
void AsyncWebServerRequest::requestAuthentication(){
|
||
AsyncWebServerResponse * r = beginResponse(401);
|
||
r->addHeader("WWW-Authenticate", "Basic realm=\"Login Required\"");
|
||
send(r);
|
||
}
|
||
|
||
bool AsyncWebServerRequest::hasArg(const char* name){
|
||
AsyncWebParameter* h = _params;
|
||
while(h != NULL){
|
||
if(h->name() == String(name))
|
||
return true;
|
||
h = h->next;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
String AsyncWebServerRequest::arg(const char* name){
|
||
AsyncWebParameter* h = _params;
|
||
while(h != NULL){
|
||
if(h->name() == String(name))
|
||
return h->value();
|
||
h = h->next;
|
||
}
|
||
return String();
|
||
}
|
||
|
||
String AsyncWebServerRequest::arg(int i){
|
||
return getParam(i)->value();
|
||
}
|
||
|
||
String AsyncWebServerRequest::argName(int i){
|
||
return getParam(i)->name();
|
||
}
|
||
|
||
String AsyncWebServerRequest::header(const char* name){
|
||
AsyncWebHeader* h = getHeader(String(name));
|
||
if(h)
|
||
return h->value();
|
||
return String();
|
||
}
|
||
|
||
String AsyncWebServerRequest::header(int i){
|
||
AsyncWebHeader* h = getHeader(i);
|
||
if(h)
|
||
return h->value();
|
||
return String();
|
||
}
|
||
|
||
String AsyncWebServerRequest::headerName(int i){
|
||
AsyncWebHeader* h = getHeader(i);
|
||
if(h)
|
||
return h->name();
|
||
return String();
|
||
}
|
||
|
||
bool AsyncWebServerRequest::hasHeader(const char* name){
|
||
return hasHeader(String(name));
|
||
}
|
||
|
||
|
||
String AsyncWebServerRequest::_urlDecode(const String& text){
|
||
String decoded = "";
|
||
char temp[] = "0x00";
|
||
unsigned int len = text.length();
|
||
unsigned int i = 0;
|
||
while (i < len)
|
||
{
|
||
char decodedChar;
|
||
char encodedChar = text.charAt(i++);
|
||
if ((encodedChar == '%') && (i + 1 < len))
|
||
{
|
||
temp[2] = text.charAt(i++);
|
||
temp[3] = text.charAt(i++);
|
||
|
||
decodedChar = strtol(temp, NULL, 16);
|
||
}
|
||
else {
|
||
if (encodedChar == '+')
|
||
{
|
||
decodedChar = ' ';
|
||
}
|
||
else {
|
||
decodedChar = encodedChar; // normal ascii char
|
||
}
|
||
}
|
||
decoded += decodedChar;
|
||
}
|
||
return decoded;
|
||
}
|
||
|