Class: Dotgpg::Cli

Inherits:
Thor
  • Object
show all
Includes:
Thor::Actions
Defined in:
lib/dotgpg/cli.rb

Instance Method Summary collapse

Instance Method Details

#add(file = nil) ⇒ Object 



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# File 'lib/dotgpg/cli.rb', line 44

def add(file=nil)
  return if helped?

  dir = Dotgpg::Dir.closest
  fail "not in a dotgpg directory" unless dir

  key = read_key_file_for_add(file)
  fail "#{file || "<stdin>"}: not a valid GPG key" unless key

  if dir.has_key?(key) && !options[:force]
    fail "#{dir.key_path(key)}: already exists"
  end

  info "Adding #{key.name} to #{dir.path}"
  info "  #{dir.key_path(key).relative_path_from(dir.path)}"

  dir.add_key(key)
rescue GPGME::Error::BadPassphrase => e
  fail e.message
end

#cat(*files) ⇒ Object 



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# File 'lib/dotgpg/cli.rb', line 90

def cat(*files)
  return if helped?

  dir = Dotgpg::Dir.closest(*files)
  fail "not in a dotgpg directory" unless dir

  files.each do |f|
    dir.decrypt f, $stdout
  end
rescue GPGME::Error::BadPassphrase => e
  fail e.message
end

#edit(*files) ⇒ Object 



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# File 'lib/dotgpg/cli.rb', line 112

def edit(*files)
  return if helped?

  dir = Dotgpg::Dir.closest(*files)
  fail "not in a dotgpg directory" unless dir

  dir.reencrypt files do |tempfiles|
    if tempfiles.any?
      to_edit = tempfiles.values.map do |temp|
        Shellwords.escape(temp.path)
      end

      system "#{Dotgpg.editor} #{to_edit.join(" ")}"
      fail "Problem with editor. Not saving changes" unless $?.success?
    end
  end

rescue GPGME::Error::BadPassphrase => e
  fail e.message
end

#init(directory = ".") ⇒ Object 



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# File 'lib/dotgpg/cli.rb', line 10

def init(directory=".")
  return if helped?

  dir = Dotgpg::Dir.new directory

  if dir.dotgpg.exist?
    fail "#{directory}/.gpg already exists"
  end

  key = Dotgpg::Key.secret_key(options[:email], options[:"new-key"])

  info "Initializing new dotgpg directory"
  info "  #{directory}/README.md" unless File.exist? 'README.md'
  info "  #{directory}/.gpg/#{key.email}"

  FileUtils.mkdir_p(dir.dotgpg)
  unless File.exist? 'README.md'
    FileUtils.cp Pathname.new(__FILE__).dirname.join("template/README.md"), dir.path.join("README.md")
  dir.add_key(key)
  end
end

#key ⇒ Object 



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# File 'lib/dotgpg/cli.rb', line 35

def key
  return if helped?

  key = Dotgpg::Key.secret_key(options[:email], options[:"new-key"])
  $stdout.print key.export(armor: true).to_s
end

#merge(*files) ⇒ Object 



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# File 'lib/dotgpg/cli.rb', line 134

def merge(*files)
  require 'find'
  require 'digest'
  require 'fileutils'

  return if helped?
  fail "usage: MYFILE OLDFILE YOURFILE" unless files.length == 3

  # ok, we won't know which gpg directory was used for our files because
  # the .merge_files are dumped in the root git dir. so we resort to ulginess
  # - we hash OLDFILE, search for directories which contain a .gpg subdir
  # and check the md5sums of all the files in said directory. if there's a
  # match we have our dir
  old_hash = Digest::SHA256.file(files[1]).hexdigest

  # if file is nil DotGpg:Dir.closest throws an error. if it's just a blank
  # string we get the "not in a dotgpg directory" message
  file = ''

  Find.find(::Dir.pwd) do |path|
    if FileTest.directory?(path) && File.basename(path) == ".gpg"
      # found a .gpg dir, check in the parent for our target file
      dotgpg_dir = File.dirname path
      gpg_files = ::Dir.glob(File.join dotgpg_dir, "*")

      if matched = gpg_files.find { |f| File.file?(f) && old_hash == Digest::SHA256.file(f).hexdigest }
        file = matched
        break
      end
    end
  end

  dir = Dotgpg::Dir.closest(file)
  fail "not in a dotgpg directory" unless dir

  mine = Tempfile.open('mine')
  old = Tempfile.open('old')
  yours = Tempfile.open('yours')

  begin
    # decrypt all three of our files
    dir.decrypt files[0], mine
    dir.decrypt files[1], old
    dir.decrypt files[2], yours

    # flush our io
    mine.flush
    old.flush
    yours.flush

    # TODO - could also use diff3(1) here:
    #
    #   "diff3 -L mine -L old -L yours -m #{mine.path} #{old.path} #{yours.path}"
    #
    # but git merge-file's output is more diff3-ish than diff3's, weird.
    cmd = "git merge-file -L mine -L old -L yours -p %s %s %s  2>/dev/null" %
      [ Shellwords.escape(mine.path), Shellwords.escape(old.path),
        Shellwords.escape(yours.path) ]

    # run our merge
    diff = `#{cmd}`
    conflict = !$?.success?
  ensure
    # close and unlink our tempfiles
    mine.close!
    old.close!
    yours.close!
  end

  # make a new stringio object out of our diff output
  io = StringIO.new diff

  #  create a new tempfile to write our merged file to
  t = Tempfile.open('merged')
  begin
    # encrypt our diff3 output
    dir.encrypt t, io
    t.flush

    # and copy that file back to OLDFILE (aka files[1]) since that's where
    # git expects to find it
    FileUtils.copy t.path, files[1]
  ensure
    t.close!
  end

  # this is important - this exit value is what git uses to decide if there
  # is a conflict or not
  exit (conflict ? 1 : 0)
rescue GPGME::Error::BadPassphrase => e
  fail e.message
end

#rm(file = nil) ⇒ Object 



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# File 'lib/dotgpg/cli.rb', line 67

def rm(file=nil)
  return if helped?(file.nil?)

  dir = Dotgpg::Dir.closest
  fail "not in a dotgpg directory" unless dir

  key = read_key_file_for_rm(file)
  fail "#{file}: not a valid GPG key" if !key && !options[:force]

  if key
    if GPGME::Key.find(:secret).include?(key) && !options[:force]
      fail "#{file}: refusing to remove your own secret key"
    end

    info "Removing #{key.name} from #{dir.path}"
    info "D #{dir.key_path(key).relative_path_from(dir.path)}"
    dir.remove_key(key)
  end
rescue GPGME::Error::BadPassphrase => e
  fail e.message
end

#unsafe_cat(*files) ⇒ Object 



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# File 'lib/dotgpg/cli.rb', line 104

def unsafe_cat(*files)
  return if helped?
  files.each do |f|
    $stdout.puts Dotgpg.decrypt_without_validating_signatures File.open f
  end
end