void ESP8266WebServer::handleClient()
{
WiFiClient client = _server.available();
if (!client) {
return;
}
#ifdef DEBUG
Serial.println("New client");
#endif
// Wait for data from client to become available
while(client.connected() && !client.available()){
delay(1);
}
// Read the first line of HTTP request
String req = client.readStringUntil('\r');
client.readStringUntil('\n');
HTTPMethod method = HTTP_GET;
if (req.startsWith("POST")) {
method = HTTP_POST;
}
// 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
Serial.print("Invalid request: ");
Serial.println(req);
#endif
return;
}
req = req.substring(addr_start + 1, addr_end);
String formData;
if (method == HTTP_POST) {
int contentLength = -1;
int headerCount = 0;
while(headerCount < 1024) { // there shouldn't be that much really
String line = client.readStringUntil('\r');
client.readStringUntil('\n');
if (line.length() > 0) { // this is a header
++headerCount;
if (contentLength < 0 && line.startsWith("Content-Length")) {
// get content length from the header
int valuePos = line.indexOf(' ', 14);
if (valuePos > 0) {
String valueStr = line.substring(valuePos+1);
contentLength = valueStr.toInt();
#ifdef DEBUG
Serial.print("Content-Length: ");
Serial.println(contentLength);
#endif
}
}
}
else {
break;
}
}
#ifdef DEBUG
Serial.print("headerCount=");
Serial.println(headerCount);
#endif
if (contentLength >= 0) {
formData = "";
int n = 0; // timeout counter
while (formData.length() < contentLength && ++n < 3)
formData += client.readString();
}
else {
formData = client.readStringUntil('\r'); // will return after timing out once
}
}
else if (method == HTTP_GET) {
int args_start = req.indexOf('?');
if (args_start != -1) {
formData = req.substring(args_start + 1);
req = req.substring(0, args_start);
}
}
client.flush();
#ifdef DEBUG
Serial.print("Request: ");
Serial.println(req);
Serial.print("Args: ");
Serial.println(formData);
#endif
_parseArguments(formData);
_handleRequest(client, req, method);
}
// Process HTTP requests -- just call it inside the loop() function
void WebConfig::ProcessHTTP()
{
// Accept any new web connection
WiFiClient httpClient = pHttpServer->available();
if (!httpClient) return;
// Read the entire request
String req = httpClient.readString();
httpClient.flush();
// after some time, do not open the web interface anymore.
//if (millis() - startMillis > 2*60000) return;
// response header
String s;
if (strlen(webLogin) > 0 || strlen(webPassword) > 0)
{
int authPos = req.indexOf("Authorization: Basic");
if (authPos == -1)
{
// request authentication
s = "HTTP/1.0 401 Authorization Required\r\nWWW-Authenticate: Basic realm=\"" + String(apName) + "\"\r\n\r\n";
s += "<h1><b>ACCESS DENIED</b></h1>";
httpClient.write(s.c_str(), s.length());
httpClient.flush();
return;
}
// there is authentication info, check it
String authInfo = req.substring(authPos + 21);
int endLinePos = authInfo.indexOf("\r");
if (endLinePos == -1) { httpClient.print("Malformed request."); httpClient.stop(); return; }
authInfo = authInfo.substring(0, endLinePos);
if (strncmp(base64Auth, authInfo.c_str(), 64))
{
s = "<h1><b>ACCESS DENIED</b></h1>";
httpClient.write(s.c_str(), s.length());
httpClient.flush();
return;
}
}
byte mac[6];
WiFi.macAddress(mac);
String m = String(mac[0],HEX) + ":" + String(mac[1],HEX) + ":" + String(mac[2],HEX) + ":" + String(mac[3],HEX) + ":" + String(mac[4],HEX) + ":" + String(mac[5],HEX);
//
// generate HTTP response
//
// authentication succeeded, proceed normally
s = "HTTP/1.1 200 OK\r\n";
s += "Content-Type: text/html\r\n\r\n";
s += "<!DOCTYPE HTML>\r\n<html><body>\r\n";
// If there are parms, update variables and save settings
bool updated = ProcessParms(req);
if (updated)
{
s += "Parameters have been updated and microcontroller will restart.<br><br>\r\n";
}
// javascript to save configuration
s += "<script>\r\n";
s += "function save()\r\n";
s += "{\r\n";
s += "var webPort = document.getElementById('web_port').value;\r\n";
s += "var webLogin = document.getElementById('web_login').value;\r\n";
s += "var webPassword = document.getElementById('web_pass').value;\r\n";
s += "var webPassword2 = document.getElementById('web_pass2').value;\r\n";
s += "var modeap = document.getElementById('modeap').checked;\r\n";
s += "if (modeap) isAP = true; else isAP = false;\r\n";
s += "var apName = document.getElementById('ap_ssid').value;\r\n";
s += "var apPassword = document.getElementById('ap_pass').value;\r\n";
s += "var apPassword2 = document.getElementById('ap_pass2').value;\r\n";
s += "var apChannel = document.getElementById('apChannel').value;\r\n";
s += "var ssid = document.getElementById('ssid').value;\r\n";
s += "var password = document.getElementById('pass').value;\r\n";
s += "var password2 = document.getElementById('pass2').value;\r\n";
s += "var udpPort = document.getElementById('udpPort').value;\r\n";
s += "var tcpPort = document.getElementById('tcpPort').value;\r\n";
s += "if (webPassword != webPassword2) { alert('WEB passwords dont match'); return; }\r\n";
s += "if (apPassword != apPassword2) { alert('AP passwords dont match'); return; }\r\n";
s += "if (password != password2) { alert('Router passwords dont match'); return; }\r\n";
s += "window.location.search=webPort + '&' + webLogin + '&' + webPassword + '&' + btoa(webLogin+':'+webPassword) + '&' + (isAP?'1':'0') + '&' + apName + '&' + apPassword + '&' + apChannel + '&' + ssid + '&' + password + '&' + udpPort + '&' + tcpPort;\r\n";
s += "}\r\n";
s += "</script>\r\n";
// write first part of response
httpClient.write(s.c_str(), s.length());
// title and mac address
s = "<b>" + String(name) + "</b><br>\r\n";
s += "MAC: " + m + "<br>\r\n";
// web interface configuration
s += "<table border=1>\r\n";
s += "<tr><td colspan=2 bgcolor=#E0E0E0><b>WEB INTERFACE</b></td></tr>\r\n";
s += "<tr><td>Port</td><td><input type=text id='web_port' value='" + String(webPort) + "'></td></tr>\r\n";
s += "<tr><td>Login</td><td><input type=text id='web_login' value='" + String(webLogin) + "'></td></tr>\r\n";
s += "<tr><td>Password</td><td><input type=password id='web_pass' value='" + String(webPassword) + "'></td></tr>\r\n";
s += "<tr><td>Pass Confirm</td><td><input type=password id='web_pass2' value='" + String(webPassword) + "'></td></tr>\r\n";
s += "</table>\r\n";
// ap configuration
s += "<table border=1>\r\n";
s += "<tr><td colspan=2 bgcolor=#E0E0E0><b>ACCESS POINT</b></td></tr>\r\n";
s += "<tr><td>Mode</td><td><input type=radio id='modeap' name='mode' value='ap'" + (isAP?String(" checked"):String("")) + ">Access Point</td></tr>\r\n";
s += "<tr><td>Channel</td><td><select id='apChannel'>";
for (byte c=1; c<14; c++) s += "<option value='" + String(c) + "'" + (c==apChannel?String(" selected"):String("")) + ">" + String(c) + "</option>";
s += "</select></td></tr>\r\n";
s += "<tr><td>SSID</td><td><input type=text id='ap_ssid' value='" + String(apName) + "'></td></tr>\r\n";
s += "<tr><td>Password</td><td><input type=password id='ap_pass' value='" + String(apPassword) + "'></td></tr>\r\n";
s += "<tr><td>Pass Confirm</td><td><input type=password id='ap_pass2' value='" + String(apPassword) + "'></td></tr>\r\n";
s += "</table>\r\n";
// station configuration
s += "<table border=1>\r\n";
s += "<tr><td colspan=2 bgcolor=#E0E0E0><b>STATION</b></td></tr>\r\n";
s += "<tr><td>Mode</td><td><input type=radio id='modest' name='mode' value='station'" + (isAP?String(""):String(" checked")) + ">Station</td></tr>\r\n";
s += "<tr><td>SSID</td><td><input type=text id='ssid' value='" + String(ssid) + "'></td></tr>\r\n";
s += "<tr><td>Password</td><td><input type=password id='pass' value='" + String(password) + "'></td></tr>\r\n";
s += "<tr><td>Pass Confirm</td><td><input type=password id='pass2' value='" + String(password) + "'></td></tr>\r\n";
s += "</table>\r\n";
// udp/tcp ports configuration
s += "<table border=1>\r\n";
s += "<tr><td colspan=2 bgcolor=#E0E0E0><b>UDP|TCP LISTENERS</b></td></tr>\r\n";
s += "<tr><td>UDP Port</td><td><input type=text id='udpPort' value='" + String(udpPort) + "'></td></tr>\r\n";
s += "<tr><td>TCP Port</td><td><input type=text id='tcpPort' value='" + String(tcpPort) + "'></td></tr>\r\n";
s += "</table>\r\n";
// save button
s += "<input type=button value='Save and Reset' onClick='save()'>\r\n";
// end of HTTP
s += "</body></html>\r\n";
// write second part of response
httpClient.write(s.c_str(), s.length());
httpClient.flush();
if (updated)
{
// give some time
delay(2000);
// reset the microcontroller
Reset();
}
}
////////////////////////////////////
// Scrape UTC Time from server
////////////////////////////////////
char* updateCurTime(void) {
static int timeout_busy=0;
int ipos;
timeout_busy=0; //reset
const char* timeServer = "aws.amazon.com";
// send a bad header on purpose, so we get a 400 with a DATE: timestamp
const char* timeServerGet = "GET example.com/ HTTP/1.1";
String utctime;
String GmtDate;
static char dateStamp[20];
static char chBuf[200];
char utctimeraw[80];
char* dpos;
WiFiClient client;
if (client.connect(timeServer, 80)) {
//Send Request
client.println(timeServerGet);
client.println();
while((!client.available())&&(timeout_busy++<5000)){
// Wait until the client sends some data
delay(1);
}
// kill client if timeout
if(timeout_busy>=5000) {
client.flush();
client.stop();
Serial.println("timeout receiving timeserver data\n");
return dateStamp;
}
// read the http GET Response
String req2 = client.readString();
// Serial.println("");
// Serial.println("");
// Serial.print(req2);
// Serial.println("");
// Serial.println("");
// close connection
delay(1);
client.flush();
client.stop();
ipos = req2.indexOf("Date:");
if(ipos>0) {
GmtDate = req2.substring(ipos,ipos+35);
// Serial.println(GmtDate);
utctime = GmtDate.substring(18,22) + getMonth(GmtDate.substring(14,17)) + GmtDate.substring(11,13) + GmtDate.substring(23,25) + GmtDate.substring(26,28) + GmtDate.substring(29,31);
// Serial.println(utctime.substring(0,14));
utctime.substring(0,14).toCharArray(dateStamp, 20);
}
}
else {
Serial.println("did not connect to timeserver\n");
}
timeout_busy=0; // reset timeout
return dateStamp; // Return latest or last good dateStamp
}
