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tlslite/integration/clienthelper.py

Summary

Maintainability
C
7 hrs
Test Coverage
D
68%

Cyclomatic complexity is too high in method __init__. (18)
Open

    def __init__(self,
                 username=None, password=None,
                 certChain=None, privateKey=None,
                 checker=None,
                 settings=None,
Severity: Minor
Found in tlslite/integration/clienthelper.py by radon

Cyclomatic Complexity

Cyclomatic Complexity corresponds to the number of decisions a block of code contains plus 1. This number (also called McCabe number) is equal to the number of linearly independent paths through the code. This number can be used as a guide when testing conditional logic in blocks.

Radon analyzes the AST tree of a Python program to compute Cyclomatic Complexity. Statements have the following effects on Cyclomatic Complexity:

Construct Effect on CC Reasoning
if +1 An if statement is a single decision.
elif +1 The elif statement adds another decision.
else +0 The else statement does not cause a new decision. The decision is at the if.
for +1 There is a decision at the start of the loop.
while +1 There is a decision at the while statement.
except +1 Each except branch adds a new conditional path of execution.
finally +0 The finally block is unconditionally executed.
with +1 The with statement roughly corresponds to a try/except block (see PEP 343 for details).
assert +1 The assert statement internally roughly equals a conditional statement.
Comprehension +1 A list/set/dict comprehension of generator expression is equivalent to a for loop.
Boolean Operator +1 Every boolean operator (and, or) adds a decision point.

Source: http://radon.readthedocs.org/en/latest/intro.html

Consider simplifying this complex logical expression.
Open

        if username and password and not \
                (certChain or privateKey):
            self.username = username
            self.password = password
Severity: Critical
Found in tlslite/integration/clienthelper.py - About 2 hrs to fix

    Function __init__ has a Cognitive Complexity of 15 (exceeds 5 allowed). Consider refactoring.
    Open

        def __init__(self,
                 username=None, password=None,
                 certChain=None, privateKey=None,
                 checker=None,
                 settings=None,
    Severity: Minor
    Found in tlslite/integration/clienthelper.py - About 1 hr to fix

    Cognitive Complexity

    Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

    A method's cognitive complexity is based on a few simple rules:

    • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
    • Code is considered more complex for each "break in the linear flow of the code"
    • Code is considered more complex when "flow breaking structures are nested"

    Further reading

    Function __init__ has 8 arguments (exceeds 4 allowed). Consider refactoring.
    Open

        def __init__(self,
    Severity: Major
    Found in tlslite/integration/clienthelper.py - About 1 hr to fix

      Function _isIP has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
      Open

          def _isIP(address):
        """Return True if the address is an IPv4 address"""
        if not address:
            return False
        vals = address.split('.')
      Severity: Minor
      Found in tlslite/integration/clienthelper.py - About 35 mins to fix

      Cognitive Complexity

      Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

      A method's cognitive complexity is based on a few simple rules:

      • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
      • Code is considered more complex for each "break in the linear flow of the code"
      • Code is considered more complex when "flow breaking structures are nested"

      Further reading

      Avoid too many return statements within this function.
      Open

              return True
      Severity: Major
      Found in tlslite/integration/clienthelper.py - About 30 mins to fix

        Similar blocks of code found in 2 locations. Consider refactoring.
        Open

                elif self.anon:
            tlsConnection.handshakeClientAnonymous(session=self.tlsSession,
                                                   settings=self.settings,
                                                   checker=self.checker,
                                                   serverName=self.serverName)
        Severity: Minor
        Found in tlslite/integration/clienthelper.py and 1 other location - About 45 mins to fix
        tlslite/integration/clienthelper.py on lines 144..150

        Duplicated Code

        Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

        Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

        When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

        Tuning

        This issue has a mass of 38.

        We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

        The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

        If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

        See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

        Refactorings

        Further Reading

        Similar blocks of code found in 2 locations. Consider refactoring.
        Open

                if self.username and self.password:
            tlsConnection.handshakeClientSRP(username=self.username,
                                             password=self.password,
                                             checker=self.checker,
                                             settings=self.settings,
        Severity: Minor
        Found in tlslite/integration/clienthelper.py and 1 other location - About 45 mins to fix
        tlslite/integration/clienthelper.py on lines 151..162

        Duplicated Code

        Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

        Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

        When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

        Tuning

        This issue has a mass of 38.

        We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

        The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

        If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

        See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

        Refactorings

        Further Reading

        Block comment should start with '# '
        Open

                #Certificate Chain Authentication
        Severity: Minor
        Found in tlslite/integration/clienthelper.py by pep8

        Separate inline comments by at least two spaces.

        An inline comment is a comment on the same line as a statement.
Inline comments should be separated by at least two spaces from the
statement. They should start with a # and a single space.

Each line of a block comment starts with a # and a single space
(unless it is indented text inside the comment).

Okay: x = x + 1  # Increment x
Okay: x = x + 1    # Increment x
Okay: # Block comment
E261: x = x + 1 # Increment x
E262: x = x + 1  #Increment x
E262: x = x + 1  #  Increment x
E265: #Block comment
E266: ### Block comment

        Block comment should start with '# '
        Open

                #No Authentication
        Severity: Minor
        Found in tlslite/integration/clienthelper.py by pep8

        Separate inline comments by at least two spaces.

        An inline comment is a comment on the same line as a statement.
Inline comments should be separated by at least two spaces from the
statement. They should start with a # and a single space.

Each line of a block comment starts with a # and a single space
(unless it is indented text inside the comment).

Okay: x = x + 1  # Increment x
Okay: x = x + 1    # Increment x
Okay: # Block comment
E261: x = x + 1 # Increment x
E262: x = x + 1  #Increment x
E262: x = x + 1  #  Increment x
E265: #Block comment
E266: ### Block comment

        Expected 2 blank lines, found 1
        Open

        class ClientHelper(object):
        Severity: Minor
        Found in tlslite/integration/clienthelper.py by pep8

        Separate top-level function and class definitions with two blank lines.

        Method definitions inside a class are separated by a single blank
line.

Extra blank lines may be used (sparingly) to separate groups of
related functions.  Blank lines may be omitted between a bunch of
related one-liners (e.g. a set of dummy implementations).

Use blank lines in functions, sparingly, to indicate logical
sections.

Okay: def a():\n    pass\n\n\ndef b():\n    pass
Okay: def a():\n    pass\n\n\nasync def b():\n    pass
Okay: def a():\n    pass\n\n\n# Foo\n# Bar\n\ndef b():\n    pass
Okay: default = 1\nfoo = 1
Okay: classify = 1\nfoo = 1

E301: class Foo:\n    b = 0\n    def bar():\n        pass
E302: def a():\n    pass\n\ndef b(n):\n    pass
E302: def a():\n    pass\n\nasync def b(n):\n    pass
E303: def a():\n    pass\n\n\n\ndef b(n):\n    pass
E303: def a():\n\n\n\n    pass
E304: @decorator\n\ndef a():\n    pass
E305: def a():\n    pass\na()
E306: def a():\n    def b():\n        pass\n    def c():\n        pass

        Block comment should start with '# '
        Open

                #SRP Authentication
        Severity: Minor
        Found in tlslite/integration/clienthelper.py by pep8

        Separate inline comments by at least two spaces.

        An inline comment is a comment on the same line as a statement.
Inline comments should be separated by at least two spaces from the
statement. They should start with a # and a single space.

Each line of a block comment starts with a # and a single space
(unless it is indented text inside the comment).

Okay: x = x + 1  # Increment x
Okay: x = x + 1    # Increment x
Okay: # Block comment
E261: x = x + 1 # Increment x
E262: x = x + 1  #Increment x
E262: x = x + 1  #  Increment x
E265: #Block comment
E266: ### Block comment

        Trailing whitespace
        Open

        # Authors:
        Severity: Minor
        Found in tlslite/integration/clienthelper.py by pep8

        Trailing whitespace is superfluous.

        The warning returned varies on whether the line itself is blank,
for easier filtering for those who want to indent their blank lines.

Okay: spam(1)\n#
W291: spam(1) \n#
W293: class Foo(object):\n    \n    bang = 12

        There are no issues that match your filters.

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