Add check for meta.json file (#251)

* Add check for meta.json file

* Moved check_meta_file function to snare_helper

bin/snare

@@ -31,7 +31,7 @@ import pip
 from snare.server import HttpRequestHandler
 from snare.utils.logger import Logger
 from snare.utils import snare_helpers
-from snare.utils.snare_helpers import str_to_bool, print_color
+from snare.utils.snare_helpers import str_to_bool, print_color, check_meta_file
 
 
 def create_initial_config():
@@ -176,6 +176,11 @@ if __name__ == '__main__':
 
     with open(os.path.join(full_page_path, 'meta.json')) as meta:
         meta_info = json.load(meta)
+
+    if not check_meta_file(meta_info):
+        print_color("Error found in meta.json. Please clone the pages again.", "ERROR")
+        exit()
+
     if not os.path.exists(os.path.join(base_page_path, args.page_dir,
                                        os.path.join(meta_info[args.index_page]['hash']))):
         print_color('can\'t create meta tag', 'WARNING')

snare/utils/snare_helpers.py

@@ -84,6 +84,15 @@ def add_meta_tag(page_dir, index_page, config):
         file.write(html)
 
 
+def check_meta_file(meta_info):
+    for k, v in meta_info.items():
+        if 'hash' in v and 'content_type' in v:
+            continue
+        else:
+            return False
+    return True
+
+
 def parse_timeout(timeout):
     timeouts_coeff = {
         'M': 60,