Remove NC code (#3824)

secdev · Dec 24, 2022 · 9473f77 · 9473f77
1 parent ef352bd
commit 9473f77
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diff --git a/scapy/volatile.py b/scapy/volatile.py
@@ -22,7 +22,6 @@
 from scapy.base_classes import Net
 from scapy.compat import bytes_encode, chb, plain_str
 from scapy.utils import corrupt_bits, corrupt_bytes
-from scapy.libs.six.moves import zip_longest
 
 from scapy.compat import (
     List,
@@ -1412,115 +1411,3 @@ class CorruptedBits(CorruptedBytes):
     def _fix(self):
         # type: () -> bytes
         return corrupt_bits(self.s, self.p, self.n)
-
-
-class CyclicPattern(VolatileValue[bytes]):
-    """
-    Generate a cyclic pattern
-
-    :param size: Size of generated pattern. Default is random size.
-    :param start: Start offset of the generated pattern.
-    :param charset_type: Charset types:
-                         0: basic (0-9A-Za-z)
-                         1: extended
-                         2: maximum (almost printable chars)
-
-
-    The code of this class was inspired by
-
-    PEDA - Python Exploit Development Assistance for GDB
-    Copyright (C) 2012 Long Le Dinh <longld at vnsecurity.net>
-    License: This work is licensed under a Creative Commons
-    Attribution-NonCommercial-ShareAlike 3.0 Unported License.
-    """
-
-    @staticmethod
-    def cyclic_pattern_charset(charset_type=None):
-        # type: (Optional[int]) -> str
-        """
-        :param charset_type: charset type
-                             0: basic (0-9A-Za-z)
-                             1: extended (default)
-                             2: maximum (almost printable chars)
-        :return: list of charset
-        """
-
-        charset = \
-            [string.ascii_uppercase, string.ascii_lowercase, string.digits]
-
-        if charset_type == 1:  # extended type
-            charset[1] = "%$-;" + re.sub("[sn]", "", charset[1])
-            charset[2] = "sn()" + charset[2]
-
-        if charset_type == 2:  # maximum type
-            charset += [string.punctuation]
-
-        return "".join(
-            ["".join(k) for k in zip_longest(*charset, fillvalue="")])
-
-    @staticmethod
-    def de_bruijn(charset, n, maxlen):
-        # type: (str, int, int) -> str
-        """
-        Generate the De Bruijn Sequence up to `maxlen` characters
-        for the charset `charset` and subsequences of length `n`.
-        Algorithm modified from wikipedia
-        https://en.wikipedia.org/wiki/De_Bruijn_sequence
-        """
-        k = len(charset)
-        a = [0] * k * n
-        sequence = []  # type: List[str]
-
-        def db(t, p):
-            # type: (int, int) -> None
-            if len(sequence) == maxlen:
-                return
-
-            if t > n:
-                if n % p == 0:
-                    for j in range(1, p + 1):
-                        sequence.append(charset[a[j]])
-                        if len(sequence) == maxlen:
-                            return
-            else:
-                a[t] = a[t - p]
-                db(t + 1, p)
-                for j in range(a[t - p] + 1, k):
-                    a[t] = j
-                    db(t + 1, t)
-
-        db(1, 1)
-        return ''.join(sequence)
-
-    def __init__(self, size=None, start=0, charset_type=None):
-        # type: (Optional[int], int, Optional[int]) -> None
-        self.size = size if size is not None else RandNumExpo(0.01)
-        self.start = start
-        self.charset_type = charset_type
-
-    def _command_args(self):
-        # type: () -> str
-        ret = ""
-        if isinstance(self.size, VolatileValue):
-            if self.size.lambd != 0.01 or self.size.base != 0:
-                ret += "size=%r" % self.size.command()
-        else:
-            ret += "size=%r" % self.size
-
-        if self.start != 0:
-            ret += ", start=%r" % self.start
-
-        if self.charset_type:
-            ret += ", charset_type=%r" % self.charset_type
-
-        return ret
-
-    def _fix(self):
-        # type: () -> bytes
-        if isinstance(self.size, VolatileValue):
-            size = self.size._fix()
-        else:
-            size = self.size
-        charset = self.cyclic_pattern_charset(self.charset_type or 0)
-        pattern = self.de_bruijn(charset, 3, size + self.start)
-        return pattern[self.start:size + self.start].encode('utf-8')
diff --git a/test/random.uts b/test/random.uts
@@ -134,97 +134,3 @@ assert de.command() == "DelayedEval(expr='3 + 1')"
 v = IncrementalValue(restart=2)
 assert v == 0 and v == 1 and v == 2 and v == 0
 assert v.command() == "IncrementalValue(restart=2)"
-
-= CyclicPattern charset 0
-
-cs0 = b'AAAaAA0AABAAbAA1AACAAcAA2AADAAdAA3AAEAAeAA4AAFAAfAA5AAGAAgAA6AAHAAhAA7AAIAAiAA8AAJAAjAA9AAKAAkAALAAlAAMAAmAANAAnAAOAAoAAPAApAAQAAqAARAArAASAAsAATAAtAAUAAuAAVAAvAAWAAwAAXAAxAAYAAyAAZAAzAaaAa0AaBAabAa1AaCAacAa2AaDAadAa3AaEAaeAa4AaFAafAa5AaGAagAa6AaHAahAa7AaIAaiAa8AaJ'
-
-p = Raw(load=CyclicPattern())
-b = bytes(p)
-if len(b):
-    if len(b) > len(cs0):
-        assert cs0 in b
-    else:
-        assert b in cs0 or b == cs0
-
-p = Raw(load=CyclicPattern(5))
-b = bytes(p)
-assert len(b) == 5
-assert b == b'AAAaA'
-
-p = Raw(load=CyclicPattern(2, 3))
-b = bytes(p)
-print(b)
-assert len(b) == 2
-assert b == b'aA'
-
-= CyclicPattern charset 1
-
-cs1 = b'AAA%AAsAABAA$AAnAACAA-AA(AADAA;AA)AAEAAaAA0AAFAAbAA1AAGAAcAA2AAHAAdAA3AAIAAeAA4AAJAAfAA5AAKAAgAA6AALAAhAA7AAMAAiAA8AANAAjAA9AAOAAkAAPAAlAAQAAmAARAAoAASAApAATAAqAAUAArAAVAAtAAWAAuAAXAAvAAYAAwAAZAAxAAyAAzA%%A%sA%BA%$A%nA%CA%-A%(A%DA%;A%)A%EA%aA%0A%FA%bA%1A%GA%'
-
-p = Raw(load=CyclicPattern(None, 0, 1))
-b = bytes(p)
-if len(b):
-    if len(b) > len(cs1):
-        assert cs1 in b
-    else:
-        assert b in cs1 or b == cs1
-
-p = Raw(load=CyclicPattern(10, 0, 1))
-b = bytes(p)
-assert len(b) == 10
-assert b == b'AAA%AAsAAB'
-
-p = Raw(load=CyclicPattern(2, 8, 1))
-b = bytes(p)
-print(b)
-assert len(b) == 2
-assert b == b'AB'
-
-= CyclicPattern charset 2
-
-cs2 = b'AAAaAA0AA!AABAAbAA1AA"AACAAcAA2AA#AADAAdAA3AA$AAEAAeAA4AA%AAFAAfAA5AA&AAGAAgAA6AA\'AAHAAhAA7AA(AAIAAiAA8AA)AAJAAjAA9AA*AAKAAkAA+AALAAlAA,AAMAAmAA-AANAAnAA.AAOAAoAA/AAPAApAA:AAQAAqAA;AARAArAA<AASAAsAA=AATAAtAA>AAUAAuAA?AAVAAvAA@AAWAAwAA[AAXAAxAA\\AAYAAyAA]AAZAAzAA^AA_AA`AA{AA|AA}AA~AaaAa0Aa!AaBAabAa1Aa"Aa'
-
-p = Raw(load=CyclicPattern(None, 0, 2))
-b = bytes(p)
-if len(b):
-    if len(b) > len(cs2):
-        assert cs2 in b
-    else:
-        assert b in cs2 or b == cs2
-
-p = Raw(load=CyclicPattern(10, 0, 2))
-b = bytes(p)
-assert len(b) == 10
-assert b == b'AAAaAA0AA!'
-
-p = Raw(load=CyclicPattern(2, 8, 2))
-b = bytes(p)
-print(b)
-assert len(b) == 2
-assert b == b'A!'
-
-= CyclicPattern command
-
-p = Raw(load=CyclicPattern(2, 8, 2))
-cmd = p.command()
-
-assert "charset_type=2" in cmd
-assert "start=8" in cmd
-assert "size=2" in cmd
-
-p = Raw(load=CyclicPattern(2))
-cmd = p.command()
-
-assert "charset_type" not in cmd
-assert "start" not in cmd
-assert "size=2" in cmd
-
-p = Raw(load=CyclicPattern())
-cmd = p.command()
-
-assert "charset_type" not in cmd
-assert "start" not in cmd
-assert "size" not in cmd
-
-