Class: RuboCop::Cop::FormulaAudit::Urls

Inherits:
RuboCop::Cop::FormulaCop show all
Defined in:
brew/Library/Homebrew/rubocops/urls.rb

Overview

This cop audits URLs and mirrors in Formulae.

Instance Attribute Summary

Attributes inherited from RuboCop::Cop::FormulaCop

#file_path

Instance Method Summary collapse

Methods inherited from RuboCop::Cop::FormulaCop

#audit_comments, #audit_urls, #block_size, #caveats_strings, #check_precedence, #class_name, #component_precedes?, #depends_on?, #depends_on_name_type?, #end_column, #expression_negated?, #find_all_blocks, #find_block, #find_blocks, #find_const, #find_every_func_call_by_name, #find_every_method_call_by_name, #find_instance_call, #find_instance_method_call, #find_method_calls_by_name, #find_method_def, #find_method_with_args, #find_node_method_by_name, #find_strings, #format_component, #formula_tap, #get_checksum_node, #line_number, #line_start_column, #method_called?, #method_called_ever?, #method_called_in_block?, #method_name, #node_equals?, #offending_node, #on_class, #parameters, #parameters_passed?, #problem, #regex_match_group, #size, #source_buffer, #start_column, #string_content, #versioned_formula?

Instance Method Details

#audit_formula(_node, _class_node, _parent_class_node, body_node) ⇒ Object



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# File 'brew/Library/Homebrew/rubocops/urls.rb', line 10

def audit_formula(_node, _class_node, _parent_class_node, body_node)
  urls = find_every_func_call_by_name(body_node, :url)
  mirrors = find_every_func_call_by_name(body_node, :mirror)

  # GNU urls; doesn't apply to mirrors
  gnu_pattern = %r{^(?:https?|ftp)://ftpmirror.gnu.org/(.*)}
  audit_urls(urls, gnu_pattern) do |match, url|
    problem "Please use \"https://ftp.gnu.org/gnu/#{match[1]}\" instead of #{url}."
  end

  # Fossies upstream requests they aren't used as primary URLs
  # https://github.com/Homebrew/homebrew-core/issues/14486#issuecomment-307753234
  fossies_pattern = %r{^https?://fossies\.org/}
  audit_urls(urls, fossies_pattern) do
    problem "Please don't use fossies.org in the url (using as a mirror is fine)"
  end

  audit_urls(mirrors, /.*/) do |_, mirror|
    urls.each do |url|
      url_string = string_content(parameters(url).first)
      next unless url_string.eql?(mirror)

      problem "URL should not be duplicated as a mirror: #{url_string}"
    end
  end

  urls += mirrors

  # Check a variety of SSL/TLS URLs that don't consistently auto-redirect
  # or are overly common errors that need to be reduced & fixed over time.
  http_to_https_patterns = Regexp.union([%r{^http://ftp\.gnu\.org/},
                                         %r{^http://ftpmirror\.gnu\.org/},
                                         %r{^http://download\.savannah\.gnu\.org/},
                                         %r{^http://download-mirror\.savannah\.gnu\.org/},
                                         %r{^http://[^/]*\.apache\.org/},
                                         %r{^http://code\.google\.com/},
                                         %r{^http://fossies\.org/},
                                         %r{^http://mirrors\.kernel\.org/},
                                         %r{^http://mirrors\.ocf\.berkeley\.edu/},
                                         %r{^http://(?:[^/]*\.)?bintray\.com/},
                                         %r{^http://tools\.ietf\.org/},
                                         %r{^http://launchpad\.net/},
                                         %r{^http://github\.com/},
                                         %r{^http://bitbucket\.org/},
                                         %r{^http://anonscm\.debian\.org/},
                                         %r{^http://cpan\.metacpan\.org/},
                                         %r{^http://hackage\.haskell\.org/},
                                         %r{^http://(?:[^/]*\.)?archive\.org},
                                         %r{^http://(?:[^/]*\.)?freedesktop\.org},
                                         %r{^http://(?:[^/]*\.)?mirrorservice\.org/}])
  audit_urls(urls, http_to_https_patterns) do |_, url|
    problem "Please use https:// for #{url}"
  end

  cpan_pattern = %r{^http://search\.mcpan\.org/CPAN/(.*)}i
  audit_urls(urls, cpan_pattern) do |match, url|
    problem "#{url} should be `https://cpan.metacpan.org/#{match[1]}`"
  end

  gnome_pattern = %r{^(http|ftp)://ftp\.gnome\.org/pub/gnome/(.*)}i
  audit_urls(urls, gnome_pattern) do |match, url|
    problem "#{url} should be `https://download.gnome.org/#{match[2]}`"
  end

  debian_pattern = %r{^git://anonscm\.debian\.org/users/(.*)}i
  audit_urls(urls, debian_pattern) do |match, url|
    problem "#{url} should be `https://anonscm.debian.org/git/users/#{match[1]}`"
  end

  # Prefer HTTP/S when possible over FTP protocol due to possible firewalls.
  mirror_service_pattern = %r{^ftp://ftp\.mirrorservice\.org}
  audit_urls(urls, mirror_service_pattern) do |_, url|
    problem "Please use https:// for #{url}"
  end

  cpan_ftp_pattern = %r{^ftp://ftp\.cpan\.org/pub/CPAN(.*)}i
  audit_urls(urls, cpan_ftp_pattern) do |match_obj, url|
    problem "#{url} should be `http://search.cpan.org/CPAN#{match_obj[1]}`"
  end

  # SourceForge url patterns
  sourceforge_patterns = %r{^https?://.*\b(sourceforge|sf)\.(com|net)}
  audit_urls(urls, sourceforge_patterns) do |_, url|
    # Skip if the URL looks like a SVN repo
    next if url.include? "/svnroot/"
    next if url.include? "svn.sourceforge"
    next if url.include? "/p/"

    if url =~ /(\?|&)use_mirror=/
      problem "Don't use #{Regexp.last_match(1)}use_mirror in SourceForge urls (url is #{url})."
    end

    problem "Don't use /download in SourceForge urls (url is #{url})." if url.end_with?("/download")

    if url =~ %r{^https?://sourceforge\.}
      problem "Use https://downloads.sourceforge.net to get geolocation (url is #{url})."
    end

    if url =~ %r{^https?://prdownloads\.}
      problem <<~EOS.chomp
        Don't use prdownloads in SourceForge urls (url is #{url}).
                See: http://librelist.com/browser/homebrew/2011/1/12/prdownloads-is-bad/
      EOS
    end

    if url =~ %r{^http://\w+\.dl\.}
      problem "Don't use specific dl mirrors in SourceForge urls (url is #{url})."
    end

    problem "Please use https:// for #{url}" if url.start_with? "http://downloads"
  end

  # Debian has an abundance of secure mirrors. Let's not pluck the insecure
  # one out of the grab bag.
  unsecure_deb_pattern = %r{^http://http\.debian\.net/debian/(.*)}i
  audit_urls(urls, unsecure_deb_pattern) do |match, _|
    problem <<~EOS
      Please use a secure mirror for Debian URLs.
      We recommend:
        https://deb.debian.org/debian/#{match[1]}
    EOS
  end

  # Check to use canonical urls for Debian packages
  noncanon_deb_pattern =
    Regexp.union([%r{^https://mirrors\.kernel\.org/debian/},
                  %r{^https://mirrors\.ocf\.berkeley\.edu/debian/},
                  %r{^https://(?:[^/]*\.)?mirrorservice\.org/sites/ftp\.debian\.org/debian/}])
  audit_urls(urls, noncanon_deb_pattern) do |_, url|
    problem "Please use https://deb.debian.org/debian/ for #{url}"
  end

  # Check for new-url Google Code download urls, https:// is preferred
  google_code_pattern = Regexp.union([%r{^http://.*\.googlecode\.com/files.*},
                                      %r{^http://code\.google\.com/}])
  audit_urls(urls, google_code_pattern) do |_, url|
    problem "Please use https:// for #{url}"
  end

  # Check for git:// GitHub repo urls, https:// is preferred.
  git_gh_pattern = %r{^git://[^/]*github\.com/}
  audit_urls(urls, git_gh_pattern) do |_, url|
    problem "Please use https:// for #{url}"
  end

  # Check for git:// Gitorious repo urls, https:// is preferred.
  git_gitorious_pattern = %r{^git://[^/]*gitorious\.org/}
  audit_urls(urls, git_gitorious_pattern) do |_, url|
    problem "Please use https:// for #{url}"
  end

  # Check for http:// GitHub repo urls, https:// is preferred.
  gh_pattern = %r{^http://github\.com/.*\.git$}
  audit_urls(urls, gh_pattern) do |_, url|
    problem "Please use https:// for #{url}"
  end

  # Check for master branch GitHub archives.
  tarball_gh_pattern = %r{^https://github\.com/.*archive/master\.(tar\.gz|zip)$}
  audit_urls(urls, tarball_gh_pattern) do
    problem "Use versioned rather than branch tarballs for stable checksums."
  end

  # Use new-style archive downloads
  archive_gh_pattern = %r{https://.*github.*/(?:tar|zip)ball/}
  audit_urls(urls, archive_gh_pattern) do |_, url|
    next unless url !~ /\.git$/

    problem "Use /archive/ URLs for GitHub tarballs (url is #{url})."
  end

  # Don't use GitHub .zip files
  zip_gh_pattern = %r{https://.*github.*/(archive|releases)/.*\.zip$}
  audit_urls(urls, zip_gh_pattern) do |_, url|
    next unless url !~ %r{releases/download}

    problem "Use GitHub tarballs rather than zipballs (url is #{url})."
  end

  # Don't use GitHub codeload URLs
  codeload_gh_pattern = %r{https?://codeload\.github\.com/(.+)/(.+)/(?:tar\.gz|zip)/(.+)}
  audit_urls(urls, codeload_gh_pattern) do |match, url|
    problem <<~EOS
      Use GitHub archive URLs:
        https://github.com/#{match[1]}/#{match[2]}/archive/#{match[3]}.tar.gz
      Rather than codeload:
        #{url}
    EOS
  end

  # Check for Maven Central urls, prefer HTTPS redirector over specific host
  maven_pattern = %r{https?://(?:central|repo\d+)\.maven\.org/maven2/(.+)$}
  audit_urls(urls, maven_pattern) do |match, url|
    problem "#{url} should be `https://search.maven.org/remotecontent?filepath=#{match[1]}`"
  end
end