add root CA and setter

Author: brentru

src/wifi/AdafruitIO_ESP32.cpp

@@ -5,8 +5,8 @@
  * Please support Adafruit and open source hardware by purchasing
  * products from Adafruit!
  *
- * Copyright (c) 2015-2016 Adafruit Industries
- * Authors: Tony DiCola, Todd Treece
+ * Copyright (c) 2015-2021 Adafruit Industries
+ * Authors: Tony DiCola, Todd Treece, Brent Rubell
  * Licensed under the MIT license.
  *
  * All text above must be included in any redistribution.
@@ -42,6 +42,7 @@ void AdafruitIO_ESP32::_connect() {
     delay(100);
     _status = AIO_NET_DISCONNECTED;
   }
+  _client.setCACert(_aio_root_ca);
 }
 
 /**************************************************************************/
@@ -55,7 +56,6 @@ void AdafruitIO_ESP32::_disconnect() {
 }
 
 aio_status_t AdafruitIO_ESP32::networkStatus() {
-
   switch (WiFi.status()) {
   case WL_CONNECTED:
     return AIO_NET_CONNECTED;

src/wifi/AdafruitIO_ESP32.h

@@ -5,8 +5,8 @@
  * Please support Adafruit and open source hardware by purchasing
  * products from Adafruit!
  *
- * Copyright (c) 2015-2016 Adafruit Industries
- * Authors: Tony DiCola, Todd Treece
+ * Copyright (c) 2015-2021 Adafruit Industries
+ * Authors: Tony DiCola, Todd Treece, Brent Rubell
  * Licensed under the MIT license.
  *
  * All text above must be included in any redistribution.
@@ -42,6 +42,32 @@ class AdafruitIO_ESP32 : public AdafruitIO {
   const char *_pass;
 
   WiFiClientSecure *_client;
+
+  // io.adafruit.com root CA
+  const char* _aio_root_ca = \
+      "-----BEGIN CERTIFICATE-----\n" \
+      "MIIDrzCCApegAwIBAgIQCDvgVpBCRrGhdWrJWZHHSjANBgkqhkiG9w0BAQUFADBh\n" \
+      "MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3\n" \
+      "d3cuZGlnaWNlcnQuY29tMSAwHgYDVQQDExdEaWdpQ2VydCBHbG9iYWwgUm9vdCBD\n" \
+      "QTAeFw0wNjExMTAwMDAwMDBaFw0zMTExMTAwMDAwMDBaMGExCzAJBgNVBAYTAlVT\n" \
+      "MRUwEwYDVQQKEwxEaWdpQ2VydCBJbmMxGTAXBgNVBAsTEHd3dy5kaWdpY2VydC5j\n" \
+      "b20xIDAeBgNVBAMTF0RpZ2lDZXJ0IEdsb2JhbCBSb290IENBMIIBIjANBgkqhkiG\n" \
+      "9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4jvhEXLeqKTTo1eqUKKPC3eQyaKl7hLOllsB\n" \
+      "CSDMAZOnTjC3U/dDxGkAV53ijSLdhwZAAIEJzs4bg7/fzTtxRuLWZscFs3YnFo97\n" \
+      "nh6Vfe63SKMI2tavegw5BmV/Sl0fvBf4q77uKNd0f3p4mVmFaG5cIzJLv07A6Fpt\n" \
+      "43C/dxC//AH2hdmoRBBYMql1GNXRor5H4idq9Joz+EkIYIvUX7Q6hL+hqkpMfT7P\n" \
+      "T19sdl6gSzeRntwi5m3OFBqOasv+zbMUZBfHWymeMr/y7vrTC0LUq7dBMtoM1O/4\n" \
+      "gdW7jVg/tRvoSSiicNoxBN33shbyTApOB6jtSj1etX+jkMOvJwIDAQABo2MwYTAO\n" \
+      "BgNVHQ8BAf8EBAMCAYYwDwYDVR0TAQH/BAUwAwEB/zAdBgNVHQ4EFgQUA95QNVbR\n" \
+      "TLtm8KPiGxvDl7I90VUwHwYDVR0jBBgwFoAUA95QNVbRTLtm8KPiGxvDl7I90VUw\n" \
+      "DQYJKoZIhvcNAQEFBQADggEBAMucN6pIExIK+t1EnE9SsPTfrgT1eXkIoyQY/Esr\n" \
+      "hMAtudXH/vTBH1jLuG2cenTnmCmrEbXjcKChzUyImZOMkXDiqw8cvpOp/2PV5Adg\n" \
+      "06O/nVsJ8dWO41P0jmP6P6fbtGbfYmbW0W5BjfIttep3Sp+dWOIrWcBAI+0tKIJF\n" \
+      "PnlUkiaY4IBIqDfv8NZ5YBberOgOzW6sRBc4L0na4UU+Krk2U886UAb3LujEV0ls\n" \
+      "YSEY1QSteDwsOoBrp+uvFRTp2InBuThs4pFsiv9kuXclVzDAGySj4dzp30d8tbQk\n" \
+      "CAUw7C29C79Fv1C5qfPrmAESrciIxpg0X40KPMbp1ZWVbd4=\n" \
+      "-----END CERTIFICATE-----\n";
+
 };
 
 #endif // ESP32