rapid7/metasploit-framework

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modules/post/multi/gather/dns_srv_lookup.rb

Summary

Maintainability
C
1 day
Test Coverage

Method run has a Cognitive Complexity of 22 (exceeds 5 allowed). Consider refactoring.
Open

  def run
    srvrcd = [
      '_gc._tcp.', '_kerberos._tcp.', '_kerberos._udp.', '_ldap._tcp.',
      '_test._tcp.', '_sips._tcp.', '_sip._udp.', '_sip._tcp.', '_aix._tcp.',
      '_aix._tcp.', '_finger._tcp.', '_ftp._tcp.', '_http._tcp.', '_nntp._tcp.',
Severity: Minor
Found in modules/post/multi/gather/dns_srv_lookup.rb - About 3 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 run has 56 lines of code (exceeds 25 allowed). Consider refactoring.
Open

  def run
    srvrcd = [
      '_gc._tcp.', '_kerberos._tcp.', '_kerberos._udp.', '_ldap._tcp.',
      '_test._tcp.', '_sips._tcp.', '_sip._udp.', '_sip._tcp.', '_aix._tcp.',
      '_aix._tcp.', '_finger._tcp.', '_ftp._tcp.', '_http._tcp.', '_nntp._tcp.',
Severity: Major
Found in modules/post/multi/gather/dns_srv_lookup.rb - About 2 hrs to fix

    Method nslookup_srv_consume has 40 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

      def nslookup_srv_consume(srv, ns_out)
        srv_records = []
        records = ns_out.split(srv)
    
        # Get host to IP mapping
    Severity: Minor
    Found in modules/post/multi/gather/dns_srv_lookup.rb - About 1 hr to fix

      Method host_srv_consume has 37 lines of code (exceeds 25 allowed). Consider refactoring.
      Open

        def host_srv_consume(host_out)
          srv_records = []
          # Parse for SRV Records
          host_out.each_line do |l|
            next unless l =~ /has SRV/
      Severity: Minor
      Found in modules/post/multi/gather/dns_srv_lookup.rb - About 1 hr to fix

        Method nslookup_srv_consume has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.
        Open

          def nslookup_srv_consume(srv, ns_out)
            srv_records = []
            records = ns_out.split(srv)
        
            # Get host to IP mapping
        Severity: Minor
        Found in modules/post/multi/gather/dns_srv_lookup.rb - About 55 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

        Method host_srv_consume has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
        Open

          def host_srv_consume(host_out)
            srv_records = []
            # Parse for SRV Records
            host_out.each_line do |l|
              next unless l =~ /has SRV/
        Severity: Minor
        Found in modules/post/multi/gather/dns_srv_lookup.rb - 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

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

          def initialize(info = {})
            super(
              update_info(
                info,
                'Name' => 'Multi Gather DNS Service Record Lookup Scan',
        Severity: Minor
        Found in modules/post/multi/gather/dns_srv_lookup.rb and 2 other locations - About 35 mins to fix
        modules/post/multi/gather/dns_reverse_lookup.rb on lines 8..27
        modules/post/multi/gather/ping_sweep.rb on lines 8..25

        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 36.

        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 data =~ /Name/
              # Remove unnecessary data and get the section with the addresses
              returned_data = data.split(/Name:/)[1]
              # check each element of the array to see if they are IP
              returned_data.gsub(/\r\n\t |\r\n|Aliases:|Addresses:|Address:/, ' ').split(' ').each do |e|
        Severity: Minor
        Found in modules/post/multi/gather/dns_srv_lookup.rb and 1 other location - About 20 mins to fix
        modules/post/windows/gather/enum_computers.rb on lines 69..75

        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 28.

        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

                      found.each do |f|
                        print_good("\t#{f[:srv]} #{f[:target]} #{f[:port]} #{f[:ip]}")
        Severity: Minor
        Found in modules/post/multi/gather/dns_srv_lookup.rb and 1 other location - About 15 mins to fix
        modules/auxiliary/fuzzers/http/http_form_field.rb on lines 454..455

        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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