Decode enrollment status JSON response

esp32_device/main/secure_api.c

@@ -6,6 +6,7 @@
 #include "storage.h"
 #include "http_client.h"
 #include "constants.h"
+#include "cJSON.h"
 
 #include "esp_log.h"
 
@@ -46,6 +47,7 @@ enum DevEnrollmentStatus secure_api_get_device_enrollment_status()
     assert(storage_get_dev_name(uri + strlen(uri)) > 0);
 
     char *res = process_secure_request(uri);
+
     free(uri);
 
     if (res == NULL)
@@ -54,9 +56,37 @@ enum DevEnrollmentStatus secure_api_get_device_enrollment_status()
         return DevEnrollError;
     }
 
-    // TODO : parse reponse
-    printf("response = %s\n", res);
+    enum DevEnrollmentStatus s = DevEnrollError;
+    cJSON *root = cJSON_Parse(res);
+    if (root == NULL)
+    {
+        ESP_LOGE(TAG, "Failed to decode JSON response from server!");
+        goto fail;
+    }
+
+    cJSON *status = cJSON_GetObjectItem(root, "status");
+    if (status == NULL)
+    {
+        ESP_LOGE(TAG, "Status missing in response from server!");
+        goto fail;
+    }
+
+    if (!strcmp(status->valuestring, "Unknown"))
+        s = DevEnrollUnknown;
+    else if (!strcmp(status->valuestring, "Pending"))
+        s = DevEnrollPending;
+    else if (!strcmp(status->valuestring, "Validated"))
+        s = DevEnrollValidated;
+    else
+    {
+        ESP_LOGE(TAG, "Unknown enrollment status: %s", status->valuestring);
+        goto fail;
+    }
+
+fail:
+
+    cJSON_Delete(root);
     free(res);
 
-    return DevEnrollError;
+    return s;
 }