bool ESP8266WebServer::_parseRequest(WiFiClient& client) {
// Read the first line of HTTP request
String req = client.readStringUntil('\r');
client.readStringUntil('\n');
//reset header value
for (int i = 0; i < _headerKeysCount; ++i) {
_currentHeaders[i].value =String();
}
// First line of HTTP request looks like "GET /path HTTP/1.1"
// Retrieve the "/path" part by finding the spaces
int addr_start = req.indexOf(' ');
int addr_end = req.indexOf(' ', addr_start + 1);
if (addr_start == -1 || addr_end == -1) {
#ifdef DEBUG_ESP_HTTP_SERVER
DEBUG_OUTPUT.print("Invalid request: ");
DEBUG_OUTPUT.println(req);
#endif
return false;
}
String methodStr = req.substring(0, addr_start);
String url = req.substring(addr_start + 1, addr_end);
String versionEnd = req.substring(addr_end + 8);
_currentVersion = atoi(versionEnd.c_str());
String searchStr = "";
int hasSearch = url.indexOf('?');
if (hasSearch != -1){
searchStr = urlDecode(url.substring(hasSearch + 1));
url = url.substring(0, hasSearch);
}
_currentUri = url;
_chunked = false;
HTTPMethod method = HTTP_GET;
if (methodStr == "POST") {
method = HTTP_POST;
} else if (methodStr == "DELETE") {
method = HTTP_DELETE;
} else if (methodStr == "OPTIONS") {
method = HTTP_OPTIONS;
} else if (methodStr == "PUT") {
method = HTTP_PUT;
} else if (methodStr == "PATCH") {
method = HTTP_PATCH;
}
_currentMethod = method;
#ifdef DEBUG_ESP_HTTP_SERVER
DEBUG_OUTPUT.print("method: ");
DEBUG_OUTPUT.print(methodStr);
DEBUG_OUTPUT.print(" url: ");
DEBUG_OUTPUT.print(url);
DEBUG_OUTPUT.print(" search: ");
DEBUG_OUTPUT.println(searchStr);
#endif
//attach handler
RequestHandler* handler;
for (handler = _firstHandler; handler; handler = handler->next()) {
if (handler->canHandle(_currentMethod, _currentUri))
break;
}
_currentHandler = handler;
String formData;
// below is needed only when POST type request
if (method == HTTP_POST || method == HTTP_PUT || method == HTTP_PATCH || method == HTTP_DELETE){
String boundaryStr;
String headerName;
String headerValue;
bool isForm = false;
bool isEncoded = false;
uint32_t contentLength = 0;
//parse headers
while(1){
req = client.readStringUntil('\r');
client.readStringUntil('\n');
if (req == "") break;//no moar headers
int headerDiv = req.indexOf(':');
if (headerDiv == -1){
break;
}
headerName = req.substring(0, headerDiv);
headerValue = req.substring(headerDiv + 1);
headerValue.trim();
_collectHeader(headerName.c_str(),headerValue.c_str());
#ifdef DEBUG_ESP_HTTP_SERVER
DEBUG_OUTPUT.print("headerName: ");
DEBUG_OUTPUT.println(headerName);
DEBUG_OUTPUT.print("headerValue: ");
DEBUG_OUTPUT.println(headerValue);
#endif
if (headerName == "Content-Type"){
if (headerValue.startsWith("text/plain")){
isForm = false;
} else if (headerValue.startsWith("application/x-www-form-urlencoded")){
isForm = false;
isEncoded = true;
} else if (headerValue.startsWith("multipart/")){
boundaryStr = headerValue.substring(headerValue.indexOf('=')+1);
isForm = true;
}
} else if (headerName == "Content-Length"){
contentLength = headerValue.toInt();
} else if (headerName == "Host"){
_hostHeader = headerValue;
}
}
if (!isForm){
size_t plainLength;
char* plainBuf = readBytesWithTimeout(client, contentLength, plainLength, HTTP_MAX_POST_WAIT);
if (plainLength < contentLength) {
free(plainBuf);
return false;
}
if (contentLength > 0) {
if (searchStr != "") searchStr += '&';
if(isEncoded){
//url encoded form
String decoded = urlDecode(plainBuf);
size_t decodedLen = decoded.length();
memcpy(plainBuf, decoded.c_str(), decodedLen);
plainBuf[decodedLen] = 0;
searchStr += plainBuf;
}
_parseArguments(searchStr);
if(!isEncoded){
//plain post json or other data
RequestArgument& arg = _currentArgs[_currentArgCount++];
arg.key = "plain";
arg.value = String(plainBuf);
}
#ifdef DEBUG_ESP_HTTP_SERVER
DEBUG_OUTPUT.print("Plain: ");
DEBUG_OUTPUT.println(plainBuf);
#endif
free(plainBuf);
}
}
if (isForm){
_parseArguments(searchStr);
if (!_parseForm(client, boundaryStr, contentLength)) {
return false;
}
}
} else {
String headerName;
String headerValue;
//parse headers
while(1){
req = client.readStringUntil('\r');
client.readStringUntil('\n');
if (req == "") break;//no moar headers
int headerDiv = req.indexOf(':');
if (headerDiv == -1){
break;
}
headerName = req.substring(0, headerDiv);
headerValue = req.substring(headerDiv + 2);
_collectHeader(headerName.c_str(),headerValue.c_str());
#ifdef DEBUG_ESP_HTTP_SERVER
DEBUG_OUTPUT.print("headerName: ");
DEBUG_OUTPUT.println(headerName);
DEBUG_OUTPUT.print("headerValue: ");
DEBUG_OUTPUT.println(headerValue);
#endif
if (headerName == "Host"){
_hostHeader = headerValue;
}
}
_parseArguments(searchStr);
}
client.flush();
#ifdef DEBUG_ESP_HTTP_SERVER
DEBUG_OUTPUT.print("Request: ");
DEBUG_OUTPUT.println(url);
DEBUG_OUTPUT.print(" Arguments: ");
DEBUG_OUTPUT.println(searchStr);
#endif
return true;
}
bool ESP8266WebServer::_parseRequest(WiFiClient& client) {
// Read the first line of HTTP request
String req = client.readStringUntil('\r');
client.readStringUntil('\n');
//reset header value
for (int i = 0; i < _headerKeysCount; ++i) {
_currentHeaders[i].value =String();
}
// First line of HTTP request looks like "GET /path HTTP/1.1"
// Retrieve the "/path" part by finding the spaces
int addr_start = req.indexOf(' ');
int addr_end = req.indexOf(' ', addr_start + 1);
if (addr_start == -1 || addr_end == -1) {
#ifdef DEBUG
DEBUG_OUTPUT.print("Invalid request: ");
DEBUG_OUTPUT.println(req);
#endif
return false;
}
String methodStr = req.substring(0, addr_start);
String url = req.substring(addr_start + 1, addr_end);
String searchStr = "";
int hasSearch = url.indexOf('?');
if (hasSearch != -1){
searchStr = url.substring(hasSearch + 1);
url = url.substring(0, hasSearch);
}
_currentUri = url;
HTTPMethod method = HTTP_GET;
if (methodStr == "POST") {
method = HTTP_POST;
} else if (methodStr == "DELETE") {
method = HTTP_DELETE;
} else if (methodStr == "OPTIONS") {
method = HTTP_OPTIONS;
} else if (methodStr == "PUT") {
method = HTTP_PUT;
} else if (methodStr == "PATCH") {
method = HTTP_PATCH;
}
_currentMethod = method;
#ifdef DEBUG
DEBUG_OUTPUT.print("method: ");
DEBUG_OUTPUT.print(methodStr);
DEBUG_OUTPUT.print(" url: ");
DEBUG_OUTPUT.print(url);
DEBUG_OUTPUT.print(" search: ");
DEBUG_OUTPUT.println(searchStr);
#endif
//attach handler
RequestHandler* handler;
for (handler = _firstHandler; handler; handler = handler->next()) {
if (handler->canHandle(_currentMethod, _currentUri))
break;
}
_currentHandler = handler;
String formData;
// below is needed only when POST type request
if (method == HTTP_POST || method == HTTP_PUT || method == HTTP_PATCH || method == HTTP_DELETE){
String boundaryStr;
String headerName;
String headerValue;
bool isForm = false;
uint32_t contentLength = 0;
//parse headers
while(1){
req = client.readStringUntil('\r');
client.readStringUntil('\n');
if (req == "") break;//no moar headers
int headerDiv = req.indexOf(':');
if (headerDiv == -1){
break;
}
headerName = req.substring(0, headerDiv);
headerValue = req.substring(headerDiv + 1);
headerValue.trim();
_collectHeader(headerName.c_str(),headerValue.c_str());
#ifdef DEBUG
DEBUG_OUTPUT.print("headerName: ");
DEBUG_OUTPUT.println(headerName);
DEBUG_OUTPUT.print("headerValue: ");
DEBUG_OUTPUT.println(headerValue);
#endif
if (headerName == "Content-Type"){
if (headerValue.startsWith("text/plain")){
isForm = false;
} else if (headerValue.startsWith("multipart/form-data")){
boundaryStr = headerValue.substring(headerValue.indexOf('=')+1);
isForm = true;
}
} else if (headerName == "Content-Length"){
contentLength = headerValue.toInt();
} else if (headerName == "Host"){
_hostHeader = headerValue;
}
}
if (!isForm){
if (searchStr != "") searchStr += '&';
//some clients send headers first and data after (like we do)
//give them a chance
int tries = 100;//100ms max wait
while(!client.available() && tries--)delay(1);
size_t plainLen = client.available();
char *plainBuf = (char*)malloc(plainLen+1);
client.readBytes(plainBuf, plainLen);
plainBuf[plainLen] = '\0';
#ifdef DEBUG
DEBUG_OUTPUT.print("Plain: ");
DEBUG_OUTPUT.println(plainBuf);
#endif
if(plainBuf[0] == '{' || plainBuf[0] == '[' || strstr(plainBuf, "=") == NULL){
//plain post json or other data
searchStr += "plain=";
searchStr += plainBuf;
} else {
searchStr += plainBuf;
}
free(plainBuf);
}
_parseArguments(searchStr);
if (isForm){
if (!_parseForm(client, boundaryStr, contentLength)) {
return false;
}
}
} else {
String headerName;
String headerValue;
//parse headers
while(1){
req = client.readStringUntil('\r');
client.readStringUntil('\n');
if (req == "") break;//no moar headers
int headerDiv = req.indexOf(':');
if (headerDiv == -1){
break;
}
headerName = req.substring(0, headerDiv);
headerValue = req.substring(headerDiv + 2);
_collectHeader(headerName.c_str(),headerValue.c_str());
#ifdef DEBUG
DEBUG_OUTPUT.print("headerName: ");
DEBUG_OUTPUT.println(headerName);
DEBUG_OUTPUT.print("headerValue: ");
DEBUG_OUTPUT.println(headerValue);
#endif
if (headerName == "Host"){
_hostHeader = headerValue;
}
}
_parseArguments(searchStr);
}
client.flush();
#ifdef DEBUG
DEBUG_OUTPUT.print("Request: ");
DEBUG_OUTPUT.println(url);
DEBUG_OUTPUT.print(" Arguments: ");
DEBUG_OUTPUT.println(searchStr);
#endif
return true;
}
