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115 lines
3.2 KiB
C++
115 lines
3.2 KiB
C++
/**
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httpUpdateSecure.ino
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Created on: 20.06.2018 as an adaptation of httpUpdate.ino
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*/
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#include <ESP8266WiFi.h>
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#include <ESP8266WiFiMulti.h>
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#include <ESP8266HTTPClient.h>
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#include <ESP8266httpUpdate.h>
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#include <time.h>
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#include <FS.h>
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#include <LittleFS.h>
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#ifndef APSSID
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#define APSSID "APSSID"
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#define APPSK "APPSK"
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#endif
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ESP8266WiFiMulti WiFiMulti;
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// A single, global CertStore which can be used by all
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// connections. Needs to stay live the entire time any of
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// the WiFiClientBearSSLs are present.
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#include <CertStoreBearSSL.h>
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BearSSL::CertStore certStore;
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// Set time via NTP, as required for x.509 validation
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void setClock() {
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configTime(0, 0, "pool.ntp.org", "time.nist.gov"); // UTC
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Serial.print(F("Waiting for NTP time sync: "));
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time_t now = time(nullptr);
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while (now < 8 * 3600 * 2) {
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yield();
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delay(500);
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Serial.print(F("."));
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now = time(nullptr);
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}
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Serial.println(F(""));
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struct tm timeinfo;
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gmtime_r(&now, &timeinfo);
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Serial.print(F("Current time: "));
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Serial.print(asctime(&timeinfo));
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}
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void setup() {
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Serial.begin(115200);
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// Serial.setDebugOutput(true);
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Serial.println();
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Serial.println();
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Serial.println();
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for (uint8_t t = 4; t > 0; t--) {
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Serial.printf("[SETUP] WAIT %d...\n", t);
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Serial.flush();
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delay(1000);
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}
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WiFi.mode(WIFI_STA);
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WiFiMulti.addAP(APSSID, APPSK);
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LittleFS.begin();
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int numCerts = certStore.initCertStore(LittleFS, PSTR("/certs.idx"), PSTR("/certs.ar"));
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Serial.print(F("Number of CA certs read: "));
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Serial.println(numCerts);
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if (numCerts == 0) {
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Serial.println(F("No certs found. Did you run certs-from-mozill.py and upload the LittleFS directory before running?"));
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return; // Can't connect to anything w/o certs!
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}
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}
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void loop() {
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// wait for WiFi connection
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if ((WiFiMulti.run() == WL_CONNECTED)) {
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setClock();
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BearSSL::WiFiClientSecure client;
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bool mfln = client.probeMaxFragmentLength("server", 443, 1024); // server must be the same as in ESPhttpUpdate.update()
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Serial.printf("MFLN supported: %s\n", mfln ? "yes" : "no");
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if (mfln) { client.setBufferSizes(1024, 1024); }
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client.setCertStore(&certStore);
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// The line below is optional. It can be used to blink the LED on the board during flashing
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// The LED will be on during download of one buffer of data from the network. The LED will
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// be off during writing that buffer to flash
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// On a good connection the LED should flash regularly. On a bad connection the LED will be
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// on much longer than it will be off. Other pins than LED_BUILTIN may be used. The second
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// value is used to put the LED on. If the LED is on with HIGH, that value should be passed
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ESPhttpUpdate.setLedPin(LED_BUILTIN, LOW);
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t_httpUpdate_return ret = ESPhttpUpdate.update(client, "https://server/file.bin");
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// Or:
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// t_httpUpdate_return ret = ESPhttpUpdate.update(client, "server", 443, "file.bin");
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switch (ret) {
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case HTTP_UPDATE_FAILED: Serial.printf("HTTP_UPDATE_FAILED Error (%d): %s\n", ESPhttpUpdate.getLastError(), ESPhttpUpdate.getLastErrorString().c_str()); break;
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case HTTP_UPDATE_NO_UPDATES: Serial.println("HTTP_UPDATE_NO_UPDATES"); break;
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case HTTP_UPDATE_OK: Serial.println("HTTP_UPDATE_OK"); break;
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}
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}
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}
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