mirror of https://github.com/jtesta/ssh-audit.git
Refactor and test SSH.Algorithm.
This commit is contained in:
Andris Raugulis
parent
774d1c1fe4
commit
72a6b9eeaf
162
ssh-audit.py
162
ssh-audit.py
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@ -1156,49 +1156,79 @@ class SSH(object): # pylint: disable=too-few-public-methods
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return u'SHA256:{0}'.format(r)
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class Algorithm(object):
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class Timeframe(object):
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def __init__(self):
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# type: () -> None
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self.__storage = {} # type: Dict[str, List[Optional[str]]]
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def __contains__(self, product):
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# type: (str) -> bool
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return product in self.__storage
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def __getitem__(self, product):
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# type: (str) -> Sequence[Optional[str]]
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return tuple(self.__storage.get(product, [None]*4))
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def __str__(self):
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# type: () -> str
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return self.__storage.__str__()
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def __repr__(self):
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# type: () -> str
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return self.__str__()
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def get_from(self, product, for_server=True):
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# type: (str, bool) -> Optional[str]
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return self[product][0 if bool(for_server) else 2]
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def get_till(self, product, for_server=True):
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# type: (str, bool) -> Optional[str]
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return self[product][1 if bool(for_server) else 3]
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def _update(self, versions, pos):
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# type: (Optional[str], int) -> None
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ssh_versions = {} # type: Dict[str, str]
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for_srv, for_cli = pos < 2, pos > 1
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for v in (versions or '').split(','):
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ssh_prod, ssh_ver, is_cli = SSH.Algorithm.get_ssh_version(v)
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if (not ssh_ver or
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(is_cli and for_srv) or
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(not is_cli and for_cli and ssh_prod in ssh_versions)):
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continue
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ssh_versions[ssh_prod] = ssh_ver
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for ssh_product, ssh_version in ssh_versions.items():
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if ssh_product not in self.__storage:
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self.__storage[ssh_product] = [None]*4
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prev = self[ssh_product][pos]
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if (prev is None or
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(prev < ssh_version and pos % 2 == 0) or
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(prev > ssh_version and pos % 2 == 1)):
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self.__storage[ssh_product][pos] = ssh_version
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def update(self, versions, for_server=None):
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# type: (List[Optional[str]], Optional[bool]) -> SSH.Algorithm.Timeframe
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for_cli = for_server is None or for_server is False
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for_srv = for_server is None or for_server is True
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vlen = len(versions)
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for i in range(min(3, vlen)):
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if for_srv and i < 2:
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self._update(versions[i], i)
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if for_cli and (i % 2 == 0 or vlen == 2):
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self._update(versions[i], 3 - 0**i)
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return self
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@staticmethod
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def get_ssh_version(version_desc):
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# type: (str) -> Tuple[str, str]
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# type: (str) -> Tuple[str, str, bool]
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is_client = version_desc.endswith('C')
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if is_client:
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version_desc = version_desc[:-1]
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if version_desc.startswith('d'):
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return SSH.Product.DropbearSSH, version_desc[1:]
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return SSH.Product.DropbearSSH, version_desc[1:], is_client
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elif version_desc.startswith('l1'):
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return SSH.Product.LibSSH, version_desc[2:]
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return SSH.Product.LibSSH, version_desc[2:], is_client
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else:
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return SSH.Product.OpenSSH, version_desc
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@classmethod
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def get_timeframe(cls, versions, for_server=True, result=None):
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# type: (List[Optional[str]], bool, Optional[Dict[str, List[Optional[str]]]]) -> Dict[str, List[Optional[str]]]
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result = result or {}
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vlen = len(versions)
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for i in range(3):
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if i > vlen - 1:
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if i == 2 and vlen > 1:
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cversions = versions[1]
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else:
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continue
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else:
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cversions = versions[i]
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if cversions is None:
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continue
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for v in cversions.split(','):
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ssh_prefix, ssh_version = cls.get_ssh_version(v)
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if not ssh_version:
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continue
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if ssh_version.endswith('C'):
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if for_server:
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continue
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ssh_version = ssh_version[:-1]
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if ssh_prefix not in result:
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result[ssh_prefix] = [None, None, None]
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prev, push = result[ssh_prefix][i], False
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if (prev is None or
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(prev < ssh_version and i == 0) or
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(prev > ssh_version and i > 0)):
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push = True
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if push:
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result[ssh_prefix][i] = ssh_version
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return result
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return SSH.Product.OpenSSH, version_desc, is_client
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@classmethod
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def get_since_text(cls, versions):
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@ -1207,14 +1237,14 @@ class SSH(object): # pylint: disable=too-few-public-methods
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if len(versions) == 0 or versions[0] is None:
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return None
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for v in versions[0].split(','):
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ssh_prefix, ssh_version = cls.get_ssh_version(v)
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if not ssh_version:
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ssh_prod, ssh_ver, is_cli = cls.get_ssh_version(v)
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if not ssh_ver:
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continue
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if ssh_prefix in [SSH.Product.LibSSH]:
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if ssh_prod in [SSH.Product.LibSSH]:
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continue
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if ssh_version.endswith('C'):
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ssh_version = '{0} (client only)'.format(ssh_version[:-1])
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tv.append('{0} {1}'.format(ssh_prefix, ssh_version))
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if is_cli:
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ssh_ver = '{0} (client only)'.format(ssh_ver)
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tv.append('{0} {1}'.format(ssh_prod, ssh_ver))
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if len(tv) == 0:
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return None
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return 'available since ' + ', '.join(tv).rstrip(', ')
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@ -1284,9 +1314,9 @@ class SSH(object): # pylint: disable=too-few-public-methods
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maxlen)
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return maxlen
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def get_ssh_timeframe(self, for_server=True):
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# type: (bool) -> Dict[str, List[Optional[str]]]
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r = {} # type: Dict[str, List[Optional[str]]]
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def get_ssh_timeframe(self, for_server=None):
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# type: (Optional[bool]) -> SSH.Algorithm.Timeframe
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timeframe = SSH.Algorithm.Timeframe()
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for alg_pair in self.values:
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alg_db = alg_pair.db
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for alg_type, alg_list in alg_pair.items():
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@ -1296,8 +1326,8 @@ class SSH(object): # pylint: disable=too-few-public-methods
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if alg_desc is None:
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continue
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versions = alg_desc[0]
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r = SSH.Algorithm.get_timeframe(versions, for_server, r)
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return r
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timeframe.update(versions, for_server)
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return timeframe
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def get_recommendations(self, software, for_server=True):
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# type: (Optional[SSH.Software], bool) -> Tuple[Optional[SSH.Software], Dict[int, Dict[str, Dict[str, Dict[str, int]]]]]
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@ -1313,7 +1343,7 @@ class SSH(object): # pylint: disable=too-few-public-methods
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for product in vproducts:
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if product not in ssh_timeframe:
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continue
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version = ssh_timeframe[product][0]
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version = ssh_timeframe.get_from(product, for_server)
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if version is not None:
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software = SSH.Software(None, product, version, None, None)
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break
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@ -1335,15 +1365,13 @@ class SSH(object): # pylint: disable=too-few-public-methods
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continue
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matches = False
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for v in versions[0].split(','):
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ssh_prefix, ssh_version = SSH.Algorithm.get_ssh_version(v)
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ssh_prefix, ssh_version, is_cli = SSH.Algorithm.get_ssh_version(v)
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if not ssh_version:
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continue
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if ssh_prefix != software.product:
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continue
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if ssh_version.endswith('C'):
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if for_server:
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continue
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ssh_version = ssh_version[:-1]
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if is_cli and for_server:
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continue
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if software.compare_version(ssh_version) < 0:
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continue
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matches = True
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@ -1842,25 +1870,25 @@ def output_algorithm(alg_db, alg_type, alg_name, alg_max_len=0):
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def output_compatibility(algs, for_server=True):
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# type: (SSH.Algorithms, bool) -> None
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ssh_timeframe = algs.get_ssh_timeframe(for_server)
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vp = 1 if for_server else 2
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comp_text = []
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for sshd_name in [SSH.Product.OpenSSH, SSH.Product.DropbearSSH]:
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if sshd_name not in ssh_timeframe:
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for ssh_prod in [SSH.Product.OpenSSH, SSH.Product.DropbearSSH]:
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if ssh_prod not in ssh_timeframe:
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continue
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v = ssh_timeframe[sshd_name]
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if v[0] is None:
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v_from = ssh_timeframe.get_from(ssh_prod, for_server)
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v_till = ssh_timeframe.get_till(ssh_prod, for_server)
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if v_from is None:
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continue
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if v[vp] is None:
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comp_text.append('{0} {1}+'.format(sshd_name, v[0]))
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elif v[0] == v[vp]:
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comp_text.append('{0} {1}'.format(sshd_name, v[0]))
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if v_till is None:
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comp_text.append('{0} {1}+'.format(ssh_prod, v_from))
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elif v_from == v_till:
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comp_text.append('{0} {1}'.format(ssh_prod, v_from))
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else:
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software = SSH.Software(None, sshd_name, v[0], None, None)
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if software.compare_version(v[vp]) > 0:
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software = SSH.Software(None, ssh_prod, v_from, None, None)
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if software.compare_version(v_till) > 0:
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tfmt = '{0} {1}+ (some functionality from {2})'
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else:
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tfmt = '{0} {1}-{2}'
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comp_text.append(tfmt.format(sshd_name, v[0], v[vp]))
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comp_text.append(tfmt.format(ssh_prod, v_from, v_till))
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if len(comp_text) > 0:
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out.good('(gen) compatibility: ' + ', '.join(comp_text))
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@ -0,0 +1,157 @@
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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import pytest
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# pylint: disable=attribute-defined-outside-init
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class TestSSHAlgorithm(object):
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@pytest.fixture(autouse=True)
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def init(self, ssh_audit):
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self.ssh = ssh_audit.SSH
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def _tf(self, v, s=None):
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return self.ssh.Algorithm.Timeframe().update(v, s)
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def test_get_ssh_version(self):
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def ver(v):
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return self.ssh.Algorithm.get_ssh_version(v)
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assert ver('7.5') == ('OpenSSH', '7.5', False)
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assert ver('7.5C') == ('OpenSSH', '7.5', True)
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assert ver('d2016.74') == ('Dropbear SSH', '2016.74', False)
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assert ver('l10.7.4') == ('libssh', '0.7.4', False)
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assert ver('')[1] == ''
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def test_get_since_text(self):
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def gst(v):
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return self.ssh.Algorithm.get_since_text(v)
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assert gst(['7.5']) == 'available since OpenSSH 7.5'
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assert gst(['7.5C']) == 'available since OpenSSH 7.5 (client only)'
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assert gst(['7.5,']) == 'available since OpenSSH 7.5'
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assert gst(['d2016.73']) == 'available since Dropbear SSH 2016.73'
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assert gst(['7.5,d2016.73']) == 'available since OpenSSH 7.5, Dropbear SSH 2016.73'
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assert gst(['l10.7.4']) is None
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assert gst([]) is None
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def test_timeframe_creation(self):
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# pylint: disable=line-too-long,too-many-statements
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def cmp_tf(v, s, r):
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assert str(self._tf(v, s)) == str(r)
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cmp_tf(['6.2'], None, {'OpenSSH': ['6.2', None, '6.2', None]})
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cmp_tf(['6.2'], True, {'OpenSSH': ['6.2', None, None, None]})
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cmp_tf(['6.2'], False, {'OpenSSH': [None, None, '6.2', None]})
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cmp_tf(['6.2C'], None, {'OpenSSH': [None, None, '6.2', None]})
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cmp_tf(['6.2C'], True, {})
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cmp_tf(['6.2C'], False, {'OpenSSH': [None, None, '6.2', None]})
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cmp_tf(['6.1,6.2C'], None, {'OpenSSH': ['6.1', None, '6.2', None]})
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cmp_tf(['6.1,6.2C'], True, {'OpenSSH': ['6.1', None, None, None]})
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cmp_tf(['6.1,6.2C'], False, {'OpenSSH': [None, None, '6.2', None]})
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cmp_tf(['6.2C,6.1'], None, {'OpenSSH': ['6.1', None, '6.2', None]})
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cmp_tf(['6.2C,6.1'], True, {'OpenSSH': ['6.1', None, None, None]})
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cmp_tf(['6.2C,6.1'], False, {'OpenSSH': [None, None, '6.2', None]})
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cmp_tf(['6.3,6.2C'], None, {'OpenSSH': ['6.3', None, '6.2', None]})
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cmp_tf(['6.3,6.2C'], True, {'OpenSSH': ['6.3', None, None, None]})
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cmp_tf(['6.3,6.2C'], False, {'OpenSSH': [None, None, '6.2', None]})
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cmp_tf(['6.2C,6.3'], None, {'OpenSSH': ['6.3', None, '6.2', None]})
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cmp_tf(['6.2C,6.3'], True, {'OpenSSH': ['6.3', None, None, None]})
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cmp_tf(['6.2C,6.3'], False, {'OpenSSH': [None, None, '6.2', None]})
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cmp_tf(['6.2', '6.6'], None, {'OpenSSH': ['6.2', '6.6', '6.2', '6.6']})
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cmp_tf(['6.2', '6.6'], True, {'OpenSSH': ['6.2', '6.6', None, None]})
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cmp_tf(['6.2', '6.6'], False, {'OpenSSH': [None, None, '6.2', '6.6']})
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cmp_tf(['6.2C', '6.6'], None, {'OpenSSH': [None, '6.6', '6.2', '6.6']})
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cmp_tf(['6.2C', '6.6'], True, {'OpenSSH': [None, '6.6', None, None]})
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cmp_tf(['6.2C', '6.6'], False, {'OpenSSH': [None, None, '6.2', '6.6']})
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cmp_tf(['6.1,6.2C', '6.6'], None, {'OpenSSH': ['6.1', '6.6', '6.2', '6.6']})
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cmp_tf(['6.1,6.2C', '6.6'], True, {'OpenSSH': ['6.1', '6.6', None, None]})
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cmp_tf(['6.1,6.2C', '6.6'], False, {'OpenSSH': [None, None, '6.2', '6.6']})
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cmp_tf(['6.2C,6.1', '6.6'], None, {'OpenSSH': ['6.1', '6.6', '6.2', '6.6']})
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cmp_tf(['6.2C,6.1', '6.6'], True, {'OpenSSH': ['6.1', '6.6', None, None]})
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cmp_tf(['6.2C,6.1', '6.6'], False, {'OpenSSH': [None, None, '6.2', '6.6']})
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cmp_tf(['6.3,6.2C', '6.6'], None, {'OpenSSH': ['6.3', '6.6', '6.2', '6.6']})
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cmp_tf(['6.3,6.2C', '6.6'], True, {'OpenSSH': ['6.3', '6.6', None, None]})
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cmp_tf(['6.3,6.2C', '6.6'], False, {'OpenSSH': [None, None, '6.2', '6.6']})
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cmp_tf(['6.2C,6.3', '6.6'], None, {'OpenSSH': ['6.3', '6.6', '6.2', '6.6']})
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cmp_tf(['6.2C,6.3', '6.6'], True, {'OpenSSH': ['6.3', '6.6', None, None]})
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cmp_tf(['6.2C,6.3', '6.6'], False, {'OpenSSH': [None, None, '6.2', '6.6']})
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cmp_tf(['6.2', '6.6', None], None, {'OpenSSH': ['6.2', '6.6', '6.2', None]})
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cmp_tf(['6.2', '6.6', None], True, {'OpenSSH': ['6.2', '6.6', None, None]})
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cmp_tf(['6.2', '6.6', None], False, {'OpenSSH': [None, None, '6.2', None]})
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cmp_tf(['6.2C', '6.6', None], None, {'OpenSSH': [None, '6.6', '6.2', None]})
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cmp_tf(['6.2C', '6.6', None], True, {'OpenSSH': [None, '6.6', None, None]})
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cmp_tf(['6.2C', '6.6', None], False, {'OpenSSH': [None, None, '6.2', None]})
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cmp_tf(['6.1,6.2C', '6.6', None], None, {'OpenSSH': ['6.1', '6.6', '6.2', None]})
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cmp_tf(['6.1,6.2C', '6.6', None], True, {'OpenSSH': ['6.1', '6.6', None, None]})
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cmp_tf(['6.1,6.2C', '6.6', None], False, {'OpenSSH': [None, None, '6.2', None]})
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cmp_tf(['6.2C,6.1', '6.6', None], None, {'OpenSSH': ['6.1', '6.6', '6.2', None]})
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cmp_tf(['6.2C,6.1', '6.6', None], True, {'OpenSSH': ['6.1', '6.6', None, None]})
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cmp_tf(['6.2C,6.1', '6.6', None], False, {'OpenSSH': [None, None, '6.2', None]})
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cmp_tf(['6.2,6.3C', '6.6', None], None, {'OpenSSH': ['6.2', '6.6', '6.3', None]})
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cmp_tf(['6.2,6.3C', '6.6', None], True, {'OpenSSH': ['6.2', '6.6', None, None]})
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cmp_tf(['6.2,6.3C', '6.6', None], False, {'OpenSSH': [None, None, '6.3', None]})
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cmp_tf(['6.3C,6.2', '6.6', None], None, {'OpenSSH': ['6.2', '6.6', '6.3', None]})
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cmp_tf(['6.3C,6.2', '6.6', None], True, {'OpenSSH': ['6.2', '6.6', None, None]})
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cmp_tf(['6.3C,6.2', '6.6', None], False, {'OpenSSH': [None, None, '6.3', None]})
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cmp_tf(['6.2', '6.6', '7.1'], None, {'OpenSSH': ['6.2', '6.6', '6.2', '7.1']})
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cmp_tf(['6.2', '6.6', '7.1'], True, {'OpenSSH': ['6.2', '6.6', None, None]})
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cmp_tf(['6.2', '6.6', '7.1'], False, {'OpenSSH': [None, None, '6.2', '7.1']})
|
||||
cmp_tf(['6.1,6.2C', '6.6', '7.1'], None, {'OpenSSH': ['6.1', '6.6', '6.2', '7.1']})
|
||||
cmp_tf(['6.1,6.2C', '6.6', '7.1'], True, {'OpenSSH': ['6.1', '6.6', None, None]})
|
||||
cmp_tf(['6.1,6.2C', '6.6', '7.1'], False, {'OpenSSH': [None, None, '6.2', '7.1']})
|
||||
cmp_tf(['6.2C,6.1', '6.6', '7.1'], None, {'OpenSSH': ['6.1', '6.6', '6.2', '7.1']})
|
||||
cmp_tf(['6.2C,6.1', '6.6', '7.1'], True, {'OpenSSH': ['6.1', '6.6', None, None]})
|
||||
cmp_tf(['6.2C,6.1', '6.6', '7.1'], False, {'OpenSSH': [None, None, '6.2', '7.1']})
|
||||
cmp_tf(['6.2,6.3C', '6.6', '7.1'], None, {'OpenSSH': ['6.2', '6.6', '6.3', '7.1']})
|
||||
cmp_tf(['6.2,6.3C', '6.6', '7.1'], True, {'OpenSSH': ['6.2', '6.6', None, None]})
|
||||
cmp_tf(['6.2,6.3C', '6.6', '7.1'], False, {'OpenSSH': [None, None, '6.3', '7.1']})
|
||||
cmp_tf(['6.3C,6.2', '6.6', '7.1'], None, {'OpenSSH': ['6.2', '6.6', '6.3', '7.1']})
|
||||
cmp_tf(['6.3C,6.2', '6.6', '7.1'], True, {'OpenSSH': ['6.2', '6.6', None, None]})
|
||||
cmp_tf(['6.3C,6.2', '6.6', '7.1'], False, {'OpenSSH': [None, None, '6.3', '7.1']})
|
||||
|
||||
tf1 = self._tf(['6.1,d2016.72,6.2C', '6.6,d2016.73', '7.1,d2016.74'])
|
||||
tf2 = self._tf(['d2016.72,6.2C,6.1', 'd2016.73,6.6', 'd2016.74,7.1'])
|
||||
tf3 = self._tf(['d2016.72,6.2C,6.1', '6.6,d2016.73', '7.1,d2016.74'])
|
||||
# check without caring for output order
|
||||
ov = "'OpenSSH': ['6.1', '6.6', '6.2', '7.1']"
|
||||
dv = "'Dropbear SSH': ['2016.72', '2016.73', '2016.72', '2016.74']"
|
||||
assert len(str(tf1)) == len(str(tf2)) == len(str(tf3))
|
||||
assert ov in str(tf1) and dv in str(tf1)
|
||||
assert ov in str(tf2) and dv in str(tf3)
|
||||
assert ov in str(tf2) and dv in str(tf3)
|
||||
|
||||
def test_timeframe_object(self):
|
||||
tf = self._tf(['6.1,6.2C', '6.6', '7.1'])
|
||||
assert 'OpenSSH' in tf
|
||||
assert 'Dropbear SSH' not in tf
|
||||
assert 'libssh' not in tf
|
||||
assert 'unknown' not in tf
|
||||
assert tf['OpenSSH'] == ('6.1', '6.6', '6.2', '7.1')
|
||||
assert tf['Dropbear SSH'] == (None, None, None, None)
|
||||
assert tf['libssh'] == (None, None, None, None)
|
||||
assert tf['unknown'] == (None, None, None, None)
|
||||
assert tf.get_from('OpenSSH', True) == '6.1'
|
||||
assert tf.get_till('OpenSSH', True) == '6.6'
|
||||
assert tf.get_from('OpenSSH', False) == '6.2'
|
||||
assert tf.get_till('OpenSSH', False) == '7.1'
|
||||
|
||||
tf = self._tf(['6.1,d2016.72,6.2C', '6.6,d2016.73', '7.1,d2016.74'])
|
||||
assert 'OpenSSH' in tf
|
||||
assert 'Dropbear SSH' in tf
|
||||
assert 'libssh' not in tf
|
||||
assert 'unknown' not in tf
|
||||
assert tf['OpenSSH'] == ('6.1', '6.6', '6.2', '7.1')
|
||||
assert tf['Dropbear SSH'] == ('2016.72', '2016.73', '2016.72', '2016.74')
|
||||
assert tf['libssh'] == (None, None, None, None)
|
||||
assert tf['unknown'] == (None, None, None, None)
|
||||
assert tf.get_from('OpenSSH', True) == '6.1'
|
||||
assert tf.get_till('OpenSSH', True) == '6.6'
|
||||
assert tf.get_from('OpenSSH', False) == '6.2'
|
||||
assert tf.get_till('OpenSSH', False) == '7.1'
|
||||
assert tf.get_from('Dropbear SSH', True) == '2016.72'
|
||||
assert tf.get_till('Dropbear SSH', True) == '2016.73'
|
||||
assert tf.get_from('Dropbear SSH', False) == '2016.72'
|
||||
assert tf.get_till('Dropbear SSH', False) == '2016.74'
|
||||
Loading…
Reference in New Issue