move to new cspot

components/spotify/cspot/bell/main/utilities/BellUtils.cpp

@@ -0,0 +1,37 @@
+#include "BellUtils.h"
+
+std::string bell::generateRandomUUID() {
+  static std::random_device dev;
+  static std::mt19937 rng(dev());
+
+  std::uniform_int_distribution<int> dist(0, 15);
+
+  const char* v = "0123456789abcdef";
+  const bool dash[] = {0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0};
+
+  std::string res;
+  for (int i = 0; i < 16; i++) {
+    if (dash[i])
+      res += "-";
+    res += v[dist(rng)];
+    res += v[dist(rng)];
+  }
+  return res;
+}
+
+std::string bell::getMacAddress() {
+#ifdef ESP_PLATFORM
+  uint8_t mac[6];
+  esp_read_mac(mac, ESP_MAC_WIFI_STA);
+  char macStr[18];
+  sprintf(macStr, "%02x:%02x:%02x:%02x:%02x:%02x", mac[0], mac[1], mac[2],
+          mac[3], mac[4], mac[5]);
+  return std::string(macStr);
+#endif
+  return "00:00:00:00:00:00";
+}
+
+void bell::freeAndNull(void*& ptr) {
+  free(ptr);
+  ptr = nullptr;
+}