rapid7/metasploit-framework

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modules/post/windows/gather/enum_prefetch.rb

Summary

Maintainability
C
1 day
Test Coverage

Method run has 70 lines of code (exceeds 25 allowed). Consider refactoring.
Open

  def run
    print_status('Prefetch Gathering started.')

    # Check to see what Windows Version is running.
    # Needed for offsets.
Severity: Major
Found in modules/post/windows/gather/enum_prefetch.rb - About 2 hrs to fix

    Method run has a Cognitive Complexity of 20 (exceeds 5 allowed). Consider refactoring.
    Open

      def run
        print_status('Prefetch Gathering started.')
    
        # Check to see what Windows Version is running.
        # Needed for offsets.
    Severity: Minor
    Found in modules/post/windows/gather/enum_prefetch.rb - About 2 hrs 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

    Method gather_pf_info has a Cognitive Complexity of 15 (exceeds 5 allowed). Consider refactoring.
    Open

      def gather_pf_info(name_offset, hash_offset, runcount_offset, filetime_offset, filename)
        # Collects the desired information from each prefetch file found
        # from the system.
    
        prefetch_file = read_file(filename)
    Severity: Minor
    Found in modules/post/windows/gather/enum_prefetch.rb - 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

    Method gather_pf_info has 32 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

      def gather_pf_info(name_offset, hash_offset, runcount_offset, filetime_offset, filename)
        # Collects the desired information from each prefetch file found
        # from the system.
    
        prefetch_file = read_file(filename)
    Severity: Minor
    Found in modules/post/windows/gather/enum_prefetch.rb - About 1 hr to fix

      Method gather_pf_info has 5 arguments (exceeds 4 allowed). Consider refactoring.
      Open

        def gather_pf_info(name_offset, hash_offset, runcount_offset, filetime_offset, filename)
      Severity: Minor
      Found in modules/post/windows/gather/enum_prefetch.rb - About 35 mins to fix

        Method print_timezone_key_values has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
        Open

          def print_timezone_key_values(key_value)
            # Looks for timezone information from registry.
            timezone = registry_getvaldata('HKLM\\SYSTEM\\CurrentControlSet\\Control\\TimeZoneInformation', key_value)
            tz_bias = registry_getvaldata('HKLM\\SYSTEM\\CurrentControlSet\\Control\\TimeZoneInformation', 'Bias')
            if timezone.nil? || tz_bias.nil?
        Severity: Minor
        Found in modules/post/windows/gather/enum_prefetch.rb - About 25 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

        Similar blocks of code found in 3 locations. Consider refactoring.
        Open

          def initialize(info = {})
            super(
              update_info(
                info,
                'Name' => 'Windows Gather Prefetch File Information',
        Severity: Minor
        Found in modules/post/windows/gather/enum_prefetch.rb and 2 other locations - About 25 mins to fix
        modules/post/windows/gather/credentials/credential_collector.rb on lines 9..28
        modules/post/windows/gather/dnscache_dump.rb on lines 8..27

        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 31.

        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

                print_error(error_msg)
                return nil
              end
        
              # Offsets for WinXP & Win2k3
        Severity: Minor
        Found in modules/post/windows/gather/enum_prefetch.rb and 1 other location - About 15 mins to fix
        modules/post/windows/gather/enum_prefetch.rb on lines 162..173

        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 25.

        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

                print_error(error_msg)
                return nil
              end
        
              # Offsets for Win7
        Severity: Minor
        Found in modules/post/windows/gather/enum_prefetch.rb and 1 other location - About 15 mins to fix
        modules/post/windows/gather/enum_prefetch.rb on lines 147..158

        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 25.

        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

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