Start to work on networking

esp32_device/main/constants.h

@@ -1,5 +1,10 @@
 #pragma once
 
+/**
+ * Backend unsecure API URL
+ */
+#define BACKEND_UNSECURE_URL "http://devweb.internal:8080"
+
 /**
  * Device name len
  */

esp32_device/main/main.c

@@ -5,6 +5,7 @@
 #include "storage.h"
 #include "system.h"
 #include "crypto.h"
+#include "unsecure_api.h"
 
 void app_main(void)
 {
@@ -36,5 +37,10 @@ void app_main(void)
     printf("Current CSR:\n%s\n", csr);
     free(csr);
 
+    printf("Check secure origin\n");
+    char *sec_orig = unsecure_api_get_secure_origin();
+    assert(sec_orig != NULL);
+    printf("Res = %s\n", sec_orig);
+
     reboot();
 }

esp32_device/main/unsecure_api.c

@@ -0,0 +1,11 @@
+#include "unsecure_api.h"
+#include "constants.h"
+#include "esp_http_client.h"
+
+#include <string.h>
+
+char *unsecure_api_get_secure_origin()
+{
+    const char *url = BACKEND_UNSECURE_URL "/secure_origin";
+    return strdup(url);
+}

esp32_device/main/unsecure_api.h

@@ -0,0 +1,22 @@
+/**
+ * Unsecure API functions
+ */
+
+#pragma once
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+    /**
+     * Get secure origin
+     *
+     * @returns The URL to the secure origin or NULL in case of failure. Value must be
+     * released by caller.
+     */
+    char *unsecure_api_get_secure_origin();
+
+#ifdef __cplusplus
+}
+#endif