// Captive portal with (arduino) OTA + SPIFFS
// some crap https://community.arubanetworks.com/t5/Controller-Based-WLANs/Apple-CNA-take-a-long-time-to-change-the-Cancel-Button-to-Done/ta-p/267612
# include <Arduino.h>
# include <ESP8266WiFi.h>
# include <ESP8266mDNS.h>
# include <WiFiUdp.h>
# include <ArduinoOTA.h> // Over-the-Air updates
# include <ESP8266WebServer.h>
# include "./DNSServer.h" // Dns server
# include <FS.h> // SPIFFS
# include <EEPROM.h> // for storing state flags in memory
# define EEPROM_SIZE 1 // define the number of bytes you want to access
DNSServer dnsServer ;
const byte DNS_PORT = 53 ;
ESP8266WebServer server ( 80 ) ;
# ifndef STASSID
# define STASSID "\xF0\x9F\x9B\xB4 beta"
//#define STASPSK "mypassword"
# endif
IPAddress apIP ( 8 , 8 , 8 , 8 ) ;
const char * ssid = STASSID ;
//const char* password = STAPSK;
void setup ( ) {
Serial . begin ( 115200 ) ;
EEPROM . begin ( EEPROM_SIZE ) ;
Serial . println ( " Booting " ) ;
WiFi . mode ( WIFI_AP ) ;
WiFi . softAPConfig ( apIP , apIP , IPAddress ( 255 , 255 , 255 , 0 ) ) ;
WiFi . softAP ( ssid ) ;
dnsServer . start ( DNS_PORT , " * " , apIP ) ; // redirect dns request to AP ip
MDNS . begin ( " opencoil " , WiFi . softAPIP ( ) ) ;
Serial . println ( " Ready " ) ;
Serial . print ( " IP address: " ) ;
Serial . println ( WiFi . softAPIP ( ) ) ;
//Over-the-Air updates
ArduinoOTA . setHostname ( " opencoil " ) ;
//ArduinoOTA.setPassword("change-me"); //enabling password disables SPIFFS upload
ArduinoOTA . begin ( ) ;
SPIFFS . begin ( ) ;
//close the captive portal screen on ios! (does not work anymore.. somehow..still allows for faking internet connection but not for closing CNA automatically)
server . on ( " /CONNECT " , closeCNAdelay ) ;
//restart esp after donwloading (hack to make sure captive portal re-opens again when a new user connects to the portal)
server . on ( " /RESTART " , restartESP ) ;
server . on ( " /generate_204 " , androidRedirect ) ; //Adnroid captive portal, create notification and pops up android cna, but does not connect or go away after...needs closeCNAdelay like handler
//server.on("/favicon.ico", androidRedirect); //Another Android captive portal
server . on ( " /fwlink " , androidRedirect ) ; //Microsoft captive portal
//if page is not found, redirect traffic to index.html (cheap way to redirect all traffic to our landing page)
server . onNotFound ( [ ] ( ) {
if ( ! handleFileRead ( server . uri ( ) ) ) {
const char * metaRefreshStr = " <head><meta http-equiv= \" refresh \" content= \" 0; url=http://8.8.8.8/index.html \" /></head><body><p>redirecting...</p></body> " ;
server . send ( 200 , " text/html " , metaRefreshStr ) ;
}
} ) ;
server . begin ( ) ;
}
void loop ( ) {
dnsServer . processNextRequest ( ) ;
ArduinoOTA . handle ( ) ;
server . handleClient ( ) ;
delay ( 50 ) ;
}
String getContentType ( String filename ) {
if ( server . hasArg ( " download " ) ) return " application/octet-stream " ;
else if ( filename . endsWith ( " .htm " ) ) return " text/html " ;
else if ( filename . endsWith ( " .html " ) ) return " text/html " ;
else if ( filename . endsWith ( " .css " ) ) return " text/css " ;
else if ( filename . endsWith ( " .js " ) ) return " application/javascript " ;
else if ( filename . endsWith ( " .png " ) ) return " image/png " ;
else if ( filename . endsWith ( " .gif " ) ) return " image/gif " ;
else if ( filename . endsWith ( " .jpg " ) ) return " image/jpeg " ;
else if ( filename . endsWith ( " .ico " ) ) return " image/x-icon " ;
else if ( filename . endsWith ( " .xml " ) ) return " text/xml " ;
else if ( filename . endsWith ( " .mp4 " ) ) return " video/mp4 " ;
else if ( filename . endsWith ( " .pdf " ) ) return " application/x-pdf " ;
else if ( filename . endsWith ( " .zip " ) ) return " application/x-zip " ;
else if ( filename . endsWith ( " .gz " ) ) return " application/x-gzip " ;
return " text/plain " ;
}
//Given a file path, look for it in the SPIFFS file storage. Returns true if found, returns false if not found.
bool handleFileRead ( String path ) {
if ( path . endsWith ( " / " ) ) path + = " index.html " ;
String contentType = getContentType ( path ) ;
String pathWithGz = path + " .gz " ;
if ( SPIFFS . exists ( pathWithGz ) | | SPIFFS . exists ( path ) ) {
if ( SPIFFS . exists ( pathWithGz ) )
path + = " .gz " ;
File file = SPIFFS . open ( path , " r " ) ;
size_t sent = server . streamFile ( file , contentType ) ;
file . close ( ) ;
return true ;
}
return false ;
}
void handleAppleCaptivePortal ( ) {
String Page = F ( " <HTML><HEAD><TITLE>Success</TITLE></HEAD><BODY>Success</BODY></HTML> " ) ;
server . sendHeader ( " Cache-Control " , " no-cache, no-store, must-revalidate " ) ;
server . sendHeader ( " Pragma " , " no-cache " ) ;
server . sendHeader ( " Expires " , " -1 " ) ;
server . send ( 200 , " text/html " , Page ) ;
return ;
}
void closeCNAdelay ( ) {
// write to fil or memory that the function has been executed
server . on ( " /hotspot-detect.html " , handleAppleCaptivePortal ) ; //only for ios, osx asks for random urls, issue: this stays 'open' for ever...also for new clients..
//delay(1000);
//ESP.restart();
return ;
}
void restartESP ( ) {
delay ( 1000 ) ;
ESP . restart ( ) ;
return ;
}
void androidRedirect ( ) {
String Page = F ( " <head><meta http-equiv= \" refresh \" content= \" 0; url=http://8.8.8.8/index.html \" /></head><body><p>redirecting...</p></body> " ) ;
server . sendHeader ( " Cache-Control " , " no-cache, no-store, must-revalidate " ) ;
server . sendHeader ( " Pragma " , " no-cache " ) ;
server . sendHeader ( " Expires " , " -1 " ) ;
server . setContentLength ( CONTENT_LENGTH_UNKNOWN ) ;
server . send ( 200 , " text/html " , Page ) ;
}
