Remove redaction stuff
This commit is contained in:
@@ -1,14 +1,14 @@
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import re
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from base64 import b64encode
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from random import randint
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# import re
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# from base64 import b64encode
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# from random import randint
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from cryptography.hazmat.primitives.ciphers import Cipher, algorithms
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from cryptography.hazmat.primitives.ciphers.modes import ECB
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from django.conf import settings
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from siphashc import siphash
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from sortedcontainers import SortedSet
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# from cryptography.hazmat.primitives.ciphers import Cipher, algorithms
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# from cryptography.hazmat.primitives.ciphers.modes import ECB
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# from django.conf import settings
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# from siphashc import siphash
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# from sortedcontainers import SortedSet
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from core import r
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# from core import r
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class SearchDenied:
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@@ -62,248 +62,249 @@ def dedup_list(data, check_keys):
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# # 1.0805372429895215
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def base36encode(number, alphabet="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"):
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"""Converts an integer to a base36 string."""
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if not isinstance(number, (int)):
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raise TypeError("number must be an integer")
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# def base36encode(number, alphabet="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"):
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# """Converts an integer to a base36 string."""
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# if not isinstance(number, (int)):
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# raise TypeError("number must be an integer")
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base36 = ""
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sign = ""
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# base36 = ""
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# sign = ""
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if number < 0:
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sign = "-"
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number = -number
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# if number < 0:
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# sign = "-"
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# number = -number
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if 0 <= number < len(alphabet):
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return sign + alphabet[number]
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# if 0 <= number < len(alphabet):
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# return sign + alphabet[number]
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while number != 0:
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number, i = divmod(number, len(alphabet))
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base36 = alphabet[i] + base36
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# while number != 0:
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# number, i = divmod(number, len(alphabet))
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# base36 = alphabet[i] + base36
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return sign + base36
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# return sign + base36
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def base36decode(number):
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return int(number, 36)
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# def base36decode(number):
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# return int(number, 36)
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def randomise_list(user, data):
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"""
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Randomise data in a list of dictionaries.
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"""
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if user.has_perm("core.bypass_randomisation"):
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return
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if isinstance(data, list):
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for index, item in enumerate(data):
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for key, value in item.items():
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if key in settings.RANDOMISE_FIELDS:
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if isinstance(value, int):
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min_val = value - (value * settings.RANDOMISE_RATIO)
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max_val = value + (value * settings.RANDOMISE_RATIO)
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new_val = randint(int(min_val), int(max_val))
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data[index][key] = new_val
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elif isinstance(data, dict):
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for key, value in data.items():
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# if key in settings.RANDOMISE_FIELDS:
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if isinstance(value, int):
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min_val = value - (value * settings.RANDOMISE_RATIO)
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max_val = value + (value * settings.RANDOMISE_RATIO)
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new_val = randint(int(min_val), int(max_val))
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data[key] = new_val
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# def randomise_list(user, data):
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# """
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# Randomise data in a list of dictionaries.
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# """
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# if user.has_perm("core.bypass_randomisation"):
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# return
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# if isinstance(data, list):
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# for index, item in enumerate(data):
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# for key, value in item.items():
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# if key in settings.RANDOMISE_FIELDS:
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# if isinstance(value, int):
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# min_val = value - (value * settings.RANDOMISE_RATIO)
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# max_val = value + (value * settings.RANDOMISE_RATIO)
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# new_val = randint(int(min_val), int(max_val))
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# data[index][key] = new_val
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# elif isinstance(data, dict):
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# for key, value in data.items():
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# # if key in settings.RANDOMISE_FIELDS:
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# if isinstance(value, int):
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# min_val = value - (value * settings.RANDOMISE_RATIO)
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# max_val = value + (value * settings.RANDOMISE_RATIO)
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# new_val = randint(int(min_val), int(max_val))
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# data[key] = new_val
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def obfuscate_list(user, data):
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"""
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Obfuscate data in a list of dictionaries.
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"""
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if user.has_perm("core.bypass_obfuscation"):
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return
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for index, item in enumerate(data):
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for key, value in item.items():
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# Obfuscate a ratio of the field
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if key in settings.OBFUSCATE_FIELDS:
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length = len(value) - 1
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split = int(length * settings.OBFUSCATE_KEEP_RATIO)
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first_part = value[:split]
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second_part = value[split:]
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second_len = len(second_part)
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second_part = "*" * second_len
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data[index][key] = first_part + second_part
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# Obfuscate value based on fields
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# Example: 2022-02-02 -> 2022-02-**
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# 14:11:12 -> 14:11:**
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elif key in settings.OBFUSCATE_FIELDS_SEP:
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if "-" in value:
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sep = "-"
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value_spl = value.split("-")
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hide_num = settings.OBFUSCATE_DASH_NUM
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elif ":" in value:
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sep = ":"
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value_spl = value.split(":")
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hide_num = settings.OBFUSCATE_COLON_NUM
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# def obfuscate_list(user, data):
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# """
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# Obfuscate data in a list of dictionaries.
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# """
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# if user.has_perm("core.bypass_obfuscation"):
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# return
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# for index, item in enumerate(data):
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# for key, value in item.items():
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# # Obfuscate a ratio of the field
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# if key in settings.OBFUSCATE_FIELDS:
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# length = len(value) - 1
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# split = int(length * settings.OBFUSCATE_KEEP_RATIO)
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# first_part = value[:split]
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# second_part = value[split:]
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# second_len = len(second_part)
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# second_part = "*" * second_len
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# data[index][key] = first_part + second_part
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# # Obfuscate value based on fields
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# # Example: 2022-02-02 -> 2022-02-**
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# # 14:11:12 -> 14:11:**
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# elif key in settings.OBFUSCATE_FIELDS_SEP:
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# if "-" in value:
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# sep = "-"
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# value_spl = value.split("-")
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# hide_num = settings.OBFUSCATE_DASH_NUM
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# elif ":" in value:
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# sep = ":"
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# value_spl = value.split(":")
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# hide_num = settings.OBFUSCATE_COLON_NUM
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first_part = value_spl[:hide_num]
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second_part = value_spl[hide_num:]
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for index_x, x in enumerate(second_part):
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x_len = len(x)
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second_part[index_x] = "*" * x_len
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result = sep.join([*first_part, *second_part])
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data[index][key] = result
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for key in settings.COMBINE_FIELDS:
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for index, item in enumerate(data):
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if key in item:
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k1, k2 = settings.COMBINE_FIELDS[key]
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if k1 in item and k2 in item:
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data[index][key] = item[k1] + item[k2]
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# first_part = value_spl[:hide_num]
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# second_part = value_spl[hide_num:]
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# for index_x, x in enumerate(second_part):
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# x_len = len(x)
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# second_part[index_x] = "*" * x_len
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# result = sep.join([*first_part, *second_part])
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# data[index][key] = result
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# for key in settings.COMBINE_FIELDS:
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# for index, item in enumerate(data):
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# if key in item:
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# k1, k2 = settings.COMBINE_FIELDS[key]
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# if k1 in item and k2 in item:
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# data[index][key] = item[k1] + item[k2]
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def hash_list(user, data, hash_keys=False):
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"""
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Hash a list of dicts or a list with SipHash42.
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"""
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if user.has_perm("core.bypass_hashing"):
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return
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cache = "cache.hash"
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hash_table = {}
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if isinstance(data, dict):
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data_copy = [{x: data[x]} for x in data]
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else:
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data_copy = type(data)((data))
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for index, item in enumerate(data_copy):
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if "src" in item:
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if item["src"] in settings.SAFE_SOURCES:
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continue
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if isinstance(item, dict):
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for key, value in list(item.items()):
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if (
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key not in settings.WHITELIST_FIELDS
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and key not in settings.NO_OBFUSCATE_PARAMS
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):
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if isinstance(value, int):
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value = str(value)
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if isinstance(value, bool):
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continue
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if value is None:
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continue
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if hash_keys:
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hashed = siphash(settings.HASHING_KEY, key)
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else:
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hashed = siphash(settings.HASHING_KEY, value)
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encoded = base36encode(hashed)
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if encoded not in hash_table:
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if hash_keys:
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hash_table[encoded] = key
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else:
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hash_table[encoded] = value
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if hash_keys:
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# Rename the dict key
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data[encoded] = data.pop(key)
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else:
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data[index][key] = encoded
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elif isinstance(item, str):
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hashed = siphash(settings.HASHING_KEY, item)
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encoded = base36encode(hashed)
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if encoded not in hash_table:
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hash_table[encoded] = item
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data[index] = encoded
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if hash_table:
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r.hmset(cache, hash_table)
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# def hash_list(user, data, hash_keys=False):
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# """
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# Hash a list of dicts or a list with SipHash42.
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# """
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# if user.has_perm("core.bypass_hashing"):
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# return
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# cache = "cache.hash"
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# hash_table = {}
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# if isinstance(data, dict):
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# data_copy = [{x: data[x]} for x in data]
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# else:
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# data_copy = type(data)((data))
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# for index, item in enumerate(data_copy):
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# if "src" in item:
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# if item["src"] in settings.SAFE_SOURCES:
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# continue
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# if isinstance(item, dict):
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# for key, value in list(item.items()):
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# if (
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# key not in settings.WHITELIST_FIELDS
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# and key not in settings.NO_OBFUSCATE_PARAMS
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# ):
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# if isinstance(value, int):
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# value = str(value)
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# if isinstance(value, bool):
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# continue
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# if value is None:
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# continue
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# if hash_keys:
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# hashed = siphash(settings.HASHING_KEY, key)
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# else:
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# hashed = siphash(settings.HASHING_KEY, value)
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# encoded = base36encode(hashed)
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# if encoded not in hash_table:
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# if hash_keys:
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# hash_table[encoded] = key
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# else:
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# hash_table[encoded] = value
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# if hash_keys:
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# # Rename the dict key
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# data[encoded] = data.pop(key)
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# else:
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# data[index][key] = encoded
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# elif isinstance(item, str):
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# hashed = siphash(settings.HASHING_KEY, item)
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# encoded = base36encode(hashed)
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# if encoded not in hash_table:
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# hash_table[encoded] = item
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# data[index] = encoded
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# if hash_table:
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# r.hmset(cache, hash_table)
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def hash_lookup(user, data_dict, supplementary_data=None):
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cache = "cache.hash"
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hash_list = SortedSet()
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denied = []
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for key, value in list(data_dict.items()):
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if "source" in data_dict:
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if data_dict["source"] in settings.SAFE_SOURCES:
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continue
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if "src" in data_dict:
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if data_dict["src"] in settings.SAFE_SOURCES:
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continue
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if supplementary_data:
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if "source" in supplementary_data:
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if supplementary_data["source"] in settings.SAFE_SOURCES:
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continue
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if key in settings.SEARCH_FIELDS_DENY:
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if not user.has_perm("core.bypass_hashing"):
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data_dict[key] = SearchDenied(key=key, value=data_dict[key])
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denied.append(data_dict[key])
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if (
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key not in settings.WHITELIST_FIELDS
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and key not in settings.NO_OBFUSCATE_PARAMS
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):
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if not value:
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continue
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# hashes = re.findall("\|([^\|]*)\|", value) # noqa
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if isinstance(value, str):
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hashes = re.findall("[A-Z0-9]{12,13}", value)
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elif isinstance(value, dict):
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hashes = []
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for key, value in value.items():
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if not value:
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continue
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hashes_iter = re.findall("[A-Z0-9]{12,13}", value)
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for h in hashes_iter:
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hashes.append(h)
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if not hashes:
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# Otherwise the user could inject plaintext search queries
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if not user.has_perm("core.bypass_hashing"):
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data_dict[key] = SearchDenied(key=key, value=data_dict[key])
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denied.append(data_dict[key])
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continue
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else:
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# There are hashes here but there shouldn't be!
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if key in settings.TAG_SEARCH_DENY:
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data_dict[key] = LookupDenied(key=key, value=data_dict[key])
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denied.append(data_dict[key])
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continue
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# def hash_lookup(user, data_dict, supplementary_data=None):
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# cache = "cache.hash"
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# hash_list = SortedSet()
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# denied = []
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# for key, value in list(data_dict.items()):
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# if "source" in data_dict:
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# if data_dict["source"] in settings.SAFE_SOURCES:
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# continue
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# if "src" in data_dict:
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# if data_dict["src"] in settings.SAFE_SOURCES:
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# continue
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# if supplementary_data:
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# if "source" in supplementary_data:
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# if supplementary_data["source"] in settings.SAFE_SOURCES:
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# continue
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# if key in settings.SEARCH_FIELDS_DENY:
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# if not user.has_perm("core.bypass_hashing"):
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# data_dict[key] = SearchDenied(key=key, value=data_dict[key])
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# denied.append(data_dict[key])
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# if (
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# key not in settings.WHITELIST_FIELDS
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# and key not in settings.NO_OBFUSCATE_PARAMS
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# ):
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# if not value:
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# continue
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# # hashes = re.findall("\|([^\|]*)\|", value) # noqa
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# if isinstance(value, str):
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# hashes = re.findall("[A-Z0-9]{12,13}", value)
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# elif isinstance(value, dict):
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# hashes = []
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# for key, value in value.items():
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# if not value:
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# continue
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# hashes_iter = re.findall("[A-Z0-9]{12,13}", value)
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# for h in hashes_iter:
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# hashes.append(h)
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# if not hashes:
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# # Otherwise the user could inject plaintext search queries
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# if not user.has_perm("core.bypass_hashing"):
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# data_dict[key] = SearchDenied(key=key, value=data_dict[key])
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# denied.append(data_dict[key])
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# continue
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# else:
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# # There are hashes here but there shouldn't be!
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# if key in settings.TAG_SEARCH_DENY:
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# data_dict[key] = LookupDenied(key=key, value=data_dict[key])
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# denied.append(data_dict[key])
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# continue
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for hash in hashes:
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hash_list.add(hash)
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# for hash in hashes:
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# hash_list.add(hash)
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if hash_list:
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values = r.hmget(cache, *hash_list)
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if not values:
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return
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for index, val in enumerate(values):
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if val is None:
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values[index] = b"ERR"
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values = [x.decode() for x in values]
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total = dict(zip(hash_list, values))
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for key in data_dict.keys():
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for hash in total:
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if data_dict[key]:
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if isinstance(data_dict[key], str):
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if hash in data_dict[key]:
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data_dict[key] = data_dict[key].replace(
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f"{hash}", total[hash]
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)
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elif isinstance(data_dict[key], dict):
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for k2, v2 in data_dict[key].items():
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if hash in v2:
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data_dict[key][k2] = v2.replace(f"{hash}", total[hash])
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return denied
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# if hash_list:
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# values = r.hmget(cache, *hash_list)
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# if not values:
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# return
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# for index, val in enumerate(values):
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# if val is None:
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# values[index] = b"ERR"
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# values = [x.decode() for x in values]
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# total = dict(zip(hash_list, values))
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# for key in data_dict.keys():
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# for hash in total:
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# if data_dict[key]:
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# if isinstance(data_dict[key], str):
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# if hash in data_dict[key]:
|
||||
# data_dict[key] = data_dict[key].replace(
|
||||
# f"{hash}", total[hash]
|
||||
# )
|
||||
# elif isinstance(data_dict[key], dict):
|
||||
# for k2, v2 in data_dict[key].items():
|
||||
# if hash in v2:
|
||||
# data_dict[key][k2] = v2.repl
|
||||
# ace(f"{hash}", total[hash])
|
||||
# return denied
|
||||
|
||||
|
||||
def encrypt_list(user, data, secret):
|
||||
if user.has_perm("core.bypass_encryption"):
|
||||
return
|
||||
cipher = Cipher(algorithms.AES(secret), ECB())
|
||||
for index, item in enumerate(data):
|
||||
for key, value in item.items():
|
||||
if key not in settings.WHITELIST_FIELDS:
|
||||
encryptor = cipher.encryptor()
|
||||
if isinstance(value, int):
|
||||
value = str(value)
|
||||
if isinstance(value, bool):
|
||||
continue
|
||||
if value is None:
|
||||
continue
|
||||
decoded = value.encode("utf8", "replace")
|
||||
length = 16 - (len(decoded) % 16)
|
||||
decoded += bytes([length]) * length
|
||||
ct = encryptor.update(decoded) + encryptor.finalize()
|
||||
final_str = b64encode(ct)
|
||||
data[index][key] = final_str.decode("utf-8", "replace")
|
||||
# def encrypt_list(user, data, secret):
|
||||
# if user.has_perm("core.bypass_encryption"):
|
||||
# return
|
||||
# cipher = Cipher(algorithms.AES(secret), ECB())
|
||||
# for index, item in enumerate(data):
|
||||
# for key, value in item.items():
|
||||
# if key not in settings.WHITELIST_FIELDS:
|
||||
# encryptor = cipher.encryptor()
|
||||
# if isinstance(value, int):
|
||||
# value = str(value)
|
||||
# if isinstance(value, bool):
|
||||
# continue
|
||||
# if value is None:
|
||||
# continue
|
||||
# decoded = value.encode("utf8", "replace")
|
||||
# length = 16 - (len(decoded) % 16)
|
||||
# decoded += bytes([length]) * length
|
||||
# ct = encryptor.update(decoded) + encryptor.finalize()
|
||||
# final_str = b64encode(ct)
|
||||
# data[index][key] = final_str.decode("utf-8", "replace")
|
||||
|
||||
Reference in New Issue
Block a user