mirror of
https://github.com/jtesta/ssh-audit.git
synced 2024-11-16 13:35:39 +01:00
135 lines
4.9 KiB
Python
135 lines
4.9 KiB
Python
import re
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import pytest
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from ssh_audit.readbuf import ReadBuf
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from ssh_audit.writebuf import WriteBuf
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# pylint: disable=attribute-defined-outside-init,bad-whitespace
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class TestBuffer:
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@pytest.fixture(autouse=True)
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def init(self, ssh_audit):
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self.rbuf = ReadBuf
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self.wbuf = WriteBuf
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self.utf8rchar = b'\xef\xbf\xbd'
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@classmethod
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def _b(cls, v):
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v = re.sub(r'\s', '', v)
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data = [int(v[i * 2:i * 2 + 2], 16) for i in range(len(v) // 2)]
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return bytes(bytearray(data))
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def test_unread(self):
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w = self.wbuf().write_byte(1).write_int(2).write_flush()
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r = self.rbuf(w)
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assert r.unread_len == 5
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r.read_byte()
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assert r.unread_len == 4
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r.read_int()
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assert r.unread_len == 0
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def test_byte(self):
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w = lambda x: self.wbuf().write_byte(x).write_flush() # noqa
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r = lambda x: self.rbuf(x).read_byte() # noqa
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tc = [(0x00, '00'),
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(0x01, '01'),
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(0x10, '10'),
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(0xff, 'ff')]
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for p in tc:
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assert w(p[0]) == self._b(p[1])
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assert r(self._b(p[1])) == p[0]
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def test_bool(self):
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w = lambda x: self.wbuf().write_bool(x).write_flush() # noqa
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r = lambda x: self.rbuf(x).read_bool() # noqa
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tc = [(True, '01'),
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(False, '00')]
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for p in tc:
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assert w(p[0]) == self._b(p[1])
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assert r(self._b(p[1])) == p[0]
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def test_int(self):
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w = lambda x: self.wbuf().write_int(x).write_flush() # noqa
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r = lambda x: self.rbuf(x).read_int() # noqa
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tc = [(0x00, '00 00 00 00'),
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(0x01, '00 00 00 01'),
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(0xabcd, '00 00 ab cd'),
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(0xffffffff, 'ff ff ff ff')]
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for p in tc:
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assert w(p[0]) == self._b(p[1])
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assert r(self._b(p[1])) == p[0]
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def test_string(self):
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w = lambda x: self.wbuf().write_string(x).write_flush() # noqa
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r = lambda x: self.rbuf(x).read_string() # noqa
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tc = [('abc1', '00 00 00 04 61 62 63 31'),
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(b'abc2', '00 00 00 04 61 62 63 32')]
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for p in tc:
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v = p[0]
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assert w(v) == self._b(p[1])
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if not isinstance(v, bytes):
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v = bytes(bytearray(v, 'utf-8'))
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assert r(self._b(p[1])) == v
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def test_list(self):
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w = lambda x: self.wbuf().write_list(x).write_flush() # noqa
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r = lambda x: self.rbuf(x).read_list() # noqa
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tc = [(['d', 'ef', 'ault'], '00 00 00 09 64 2c 65 66 2c 61 75 6c 74')]
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for p in tc:
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assert w(p[0]) == self._b(p[1])
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assert r(self._b(p[1])) == p[0]
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def test_list_nonutf8(self):
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r = lambda x: self.rbuf(x).read_list() # noqa
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src = self._b('00 00 00 04 de ad be ef')
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dst = [(b'\xde\xad' + self.utf8rchar + self.utf8rchar).decode('utf-8')]
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assert r(src) == dst
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def test_line(self):
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w = lambda x: self.wbuf().write_line(x).write_flush() # noqa
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r = lambda x: self.rbuf(x).read_line() # noqa
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tc = [('example line', '65 78 61 6d 70 6c 65 20 6c 69 6e 65 0d 0a')]
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for p in tc:
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assert w(p[0]) == self._b(p[1])
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assert r(self._b(p[1])) == p[0]
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def test_line_nonutf8(self):
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r = lambda x: self.rbuf(x).read_line() # noqa
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src = self._b('de ad be af')
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dst = (b'\xde\xad' + self.utf8rchar + self.utf8rchar).decode('utf-8')
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assert r(src) == dst
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def test_bitlen(self):
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# pylint: disable=protected-access
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class Py26Int(int):
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def bit_length(self):
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raise AttributeError
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assert self.wbuf._bitlength(42) == 6
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assert self.wbuf._bitlength(Py26Int(42)) == 6
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def test_mpint1(self):
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mpint1w = lambda x: self.wbuf().write_mpint1(x).write_flush() # noqa
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mpint1r = lambda x: self.rbuf(x).read_mpint1() # noqa
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tc = [(0x0, '00 00'),
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(0x1234, '00 0d 12 34'),
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(0x12345, '00 11 01 23 45'),
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(0xdeadbeef, '00 20 de ad be ef')]
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for p in tc:
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assert mpint1w(p[0]) == self._b(p[1])
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assert mpint1r(self._b(p[1])) == p[0]
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def test_mpint2(self):
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mpint2w = lambda x: self.wbuf().write_mpint2(x).write_flush() # noqa
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mpint2r = lambda x: self.rbuf(x).read_mpint2() # noqa
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tc = [(0x0, '00 00 00 00'),
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(0x80, '00 00 00 02 00 80'),
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(0x9a378f9b2e332a7, '00 00 00 08 09 a3 78 f9 b2 e3 32 a7'),
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(-0x1234, '00 00 00 02 ed cc'),
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(-0xdeadbeef, '00 00 00 05 ff 21 52 41 11'),
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(-0x8000, '00 00 00 02 80 00'),
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(-0x80, '00 00 00 01 80')]
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for p in tc:
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assert mpint2w(p[0]) == self._b(p[1])
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assert mpint2r(self._b(p[1])) == p[0]
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assert mpint2r(self._b('00 00 00 02 ff 80')) == -0x80
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