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136 lines
3.6 KiB
136 lines
3.6 KiB
#include "XD0OTA.h"
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#include <WiFi.h>
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#include <WiFiClient.h>
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#include <HTTPClient.h>
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#include <HTTPUpdate.h>
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#include <time.h>
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static const char* TAG = "OTA";
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XD0OTA::XD0OTA(String deviceName) : deviceName{deviceName} {}
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// Set time via NTP, as required for x.509 validation
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void XD0OTA::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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int tries = 0;
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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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tries++;
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if (tries>15) return;
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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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String XD0OTA::getMAC() {
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uint8_t mac[6];
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char result[14];
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WiFi.macAddress( mac );
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snprintf( result, sizeof( result ), "%02x%02x%02x%02x%02x%02x", mac[ 0 ], mac[ 1 ], mac[ 2 ], mac[ 3 ], mac[ 4 ], mac[ 5 ] );
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return String( result );
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}
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String XD0OTA::getUpdateURL(String file, String extension) {
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String updateURL = String(fwUrlBase);
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updateURL.concat(file);
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updateURL.concat(extension);
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return updateURL;
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}
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void XD0OTA::update(void) {
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setClock();
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// try device specific image first
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String fwURL = getUpdateURL(getMAC(), ".bin");
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int newVersion = checkForUpdates(fwURL + ".version");
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if (newVersion < 1) {
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ESP_LOGW(TAG, "[update] no device specific update found..\n");
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fwURL = getUpdateURL(deviceName, ".bin");
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newVersion = checkForUpdates(fwURL + ".version");
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// try project specific image
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if (newVersion < 1) {
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ESP_LOGW(TAG, "[update] Error while looking for updates..\n");
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return;
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}
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}
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if( newVersion > FW_VERSION ) {
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ESP_LOGW(TAG, "Preparing to update.\n" );
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ESP_LOGW(TAG, "Firmware image URL: " );
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ESP_LOGW(TAG, "%s\n", fwURL.c_str() );
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WiFiClientSecure client;
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client.setCACert(rootCACertificate);
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client.setTimeout(12); // seconds
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httpUpdate.setLedPin(LED_BUILTIN, HIGH);
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t_httpUpdate_return ret = httpUpdate.update( client, fwURL );
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switch(ret) {
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case HTTP_UPDATE_FAILED:
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ESP_LOGW(TAG, "HTTP_UPDATE_FAILED Error (%d): %s\n", httpUpdate.getLastError(), httpUpdate.getLastErrorString().c_str());
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break;
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case HTTP_UPDATE_NO_UPDATES:
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ESP_LOGW(TAG, "HTTP_UPDATE_NO_UPDATES\n");
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break;
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case HTTP_UPDATE_OK:
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ESP_LOGW(TAG, "[update] Update ok.\n"); // may not called we reboot the ESP
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break;
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}
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} else {
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ESP_LOGW(TAG, "[update] Already on latest version\n" );
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}
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}
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int XD0OTA::checkForUpdates(String url) {
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int newVersion = -1;
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ESP_LOGW(TAG, "Checking for firmware updates.\n" );
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ESP_LOGW(TAG, "Firmware version URL: " );
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ESP_LOGW(TAG, "%s\n", url.c_str() );
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WiFiClientSecure client;
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client.setCACert(rootCACertificate);
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client.setTimeout(5); // seconds
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HTTPClient httpClient;
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httpClient.begin( client, url );
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int httpCode = httpClient.GET();
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if( httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY ) {
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String newFWVersion = httpClient.getString();
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ESP_LOGW(TAG, "Current firmware version: " );
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ESP_LOGW(TAG, "%s\n", String(FW_VERSION).c_str() );
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ESP_LOGW(TAG, "Available firmware version: " );
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ESP_LOGW(TAG, "%s\n", newFWVersion.c_str() );
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newVersion = newFWVersion.toInt();
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} else {
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ESP_LOGW(TAG, "Firmware version check failed, got HTTP response code " );
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ESP_LOGW(TAG, "%d\n", httpCode );
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newVersion = -1;
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}
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httpClient.end();
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client.stop();
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return newVersion;
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}
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