Implement obfuscation

core/views/helpers.py

@@ -80,6 +80,45 @@ def base36decode(number):
     return int(number, 36)
 
 
+def obfuscate_list(user, data):
+    """
+    Obfuscate data in a list of dictionaries.
+    """
+    if user.has_perm("core.bypass_obfuscation"):
+        return
+    for index, item in enumerate(data):
+        for key, value in item.items():
+            # Obfuscate a ratio of the field
+            if key in settings.OBFUSCATE_FIELDS:
+                length = len(value) - 1
+                split = int(length * settings.OBFUSCATE_KEEP_RATIO)
+                first_part = value[:split]
+                second_part = value[split:]
+                second_len = len(second_part)
+                second_part = "*" * second_len
+                data[index][key] = first_part + second_part
+            # Obfuscate value based on fields
+            # Example: 2022-02-02 -> 2022-02-**
+            # 14:11:12 -> 14:11:**
+            elif key in settings.OBFUSCATE_FIELDS_SEP:
+                if "-" in value:
+                    sep = "-"
+                    value_spl = value.split("-")
+                    hide_num = settings.OBFUSCATE_DASH_NUM
+                elif ":" in value:
+                    sep = ":"
+                    value_spl = value.split(":")
+                    hide_num = settings.OBFUSCATE_COLON_NUM
+
+                first_part = value_spl[:hide_num]
+                second_part = value_spl[hide_num:]
+                for index_x, x in enumerate(second_part):
+                    x_len = len(x)
+                    second_part[index_x] = "*" * x_len
+                result = sep.join([*first_part, *second_part])
+                data[index][key] = result
+
+
 def hash_list(user, data, hash_keys=False):
     """
     Hash a list of dicts or a list with SipHash42.