WIP enroll device

esp32_device/main/secure_api.c

@@ -6,13 +6,14 @@
 #include "storage.h"
 #include "http_client.h"
 #include "constants.h"
+#include "crypto.h"
 #include "cJSON.h"
 
 #include "esp_log.h"
 
 static const char *TAG = "secure_api";
 
-static char *process_secure_request(const char *uri)
+static char *process_secure_request(const char *uri, const char *body)
 {
     char *url = calloc(1, 255);
     assert(url);
@@ -46,7 +47,7 @@ enum DevEnrollmentStatus secure_api_get_device_enrollment_status()
     sprintf(uri, "/devices_api/mgmt/enrollment_status?id=");
     assert(storage_get_dev_name(uri + strlen(uri)) > 0);
 
-    char *res = process_secure_request(uri);
+    char *res = process_secure_request(uri, NULL);
 
     free(uri);
 
@@ -89,4 +90,54 @@ fail:
     free(res);
 
     return s;
+}
+
+/**
+ * Generate device information. Pointer to be released by caller
+ */
+static cJSON *genDevInfo()
+{
+    cJSON *json = cJSON_CreateObject();
+    if (!json)
+        return NULL;
+    cJSON_AddStringToObject(json, "reference", DEV_REFERENCE);
+    cJSON_AddStringToObject(json, "version", DEV_VERSION);
+    cJSON_AddNumberToObject(json, "max_relays", DEV_MAX_RELAYS);
+    return json;
+}
+
+int secure_api_enroll_device()
+{
+    char *csr = crypto_get_csr();
+    if (!csr)
+    {
+        ESP_LOGE(TAG, "Failed to get CSR!");
+        return 1;
+    }
+
+    cJSON *obj = cJSON_CreateObject();
+    if (!obj)
+    {
+        ESP_LOGE(TAG, "Failed allocate memory to store JSON object!");
+        return 1;
+    }
+
+    cJSON_AddItemToObject(obj, "info", genDevInfo());
+    cJSON_AddStringToObject(obj, "csr", csr);
+
+    char *body = cJSON_PrintUnformatted(obj);
+    if (!body)
+    {
+        ESP_LOGE(TAG, "Failed to generate JSON body!");
+        return 1;
+    }
+
+    // TODO : perform request
+    printf("res = %s\n", body);
+
+    cJSON_Delete(obj);
+    free(body);
+    free(csr);
+
+    return 0;
 }