Added support for authentication in --share mode (via auth.json)

modules/auth.py

@@ -0,0 +1,40 @@
+import json
+import hashlib
+
+from os.path import exists
+
+
+def auth_list_to_dict(auth_list):
+    auth_dict = {}
+    for auth_data in auth_list:
+        if 'user' in auth_data:
+            if 'hash' in auth_data:
+                auth_dict |= {auth_data['user']: auth_data['hash']}
+            elif 'pass' in auth_data:
+                auth_dict |= {auth_data['user']: hashlib.sha256(bytes(auth_data['pass'], encoding='utf-8')).hexdigest()}
+    return auth_dict
+
+
+def load_auth_data(filename=None):
+    auth_dict = None
+    if filename != None and exists(filename):
+        with open(filename, encoding='utf-8') as auth_file:
+            try:
+                auth_obj = json.load(auth_file)
+                if isinstance(auth_obj, list) and len(auth_obj) > 0:
+                    auth_dict = auth_list_to_dict(auth_obj)
+            except Exception as e:
+                print('load_auth_data, e: ' + str(e))
+    return auth_dict
+
+
+auth_dict = load_auth_data('auth.json')
+
+auth_enabled = auth_dict != None
+
+
+def check_auth(user, password):
+    if user not in auth_dict:
+        return False
+    else:   
+        return hashlib.sha256(bytes(password, encoding='utf-8')).hexdigest() == auth_dict[user]