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rapid7/metasploit-framework

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lib/msf/core/exploit/remote/mysql.rb

Summary

Maintainability
A
3 hrs
Test Coverage

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

  def mysql_get_arch
    print_status "Checking target architecture..."
    res = mysql_get_variable("@@version_compile_os")
    return :unknown unless res
    case res
Severity: Minor
Found in lib/msf/core/exploit/remote/mysql.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

Avoid too many return statements within this method.
Open

      return false
Severity: Major
Found in lib/msf/core/exploit/remote/mysql.rb - About 30 mins to fix

    Avoid too many return statements within this method.
    Open

        return true
    Severity: Major
    Found in lib/msf/core/exploit/remote/mysql.rb - About 30 mins to fix

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

        def mysql_get_plugin_dir
    print_status "Checking for MySQL plugin directory..."
    plugin_res = nil
    base_res = nil
    plugin_res = mysql_get_variable("@@plugin_dir") rescue nil
      Severity: Minor
      Found in lib/msf/core/exploit/remote/mysql.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

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

        def mysql_logoff
    temp_rhost = mysql_conn.peerhost if mysql_conn
    temp_rport = mysql_conn.peerport if mysql_conn
    mysql_conn.close if mysql_conn
    disconnect if sock
      Severity: Minor
      Found in lib/msf/core/exploit/remote/mysql.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

    register_options(
      [
      Severity: Minor
      Found in lib/msf/core/exploit/remote/mysql.rb and 2 other locations - About 20 mins to fix
      lib/msf/core/exploit/remote/imap.rb on lines 18..28
      lib/msf/core/exploit/remote/pop2.rb on lines 18..28

      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

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