Class: HTAuth::CLI::Passwd

Inherits:
Object
  • Object
show all
Defined in:
lib/htauth/cli/passwd.rb

Overview

Internal: Implemenation of the commandline htpasswd-ruby

Constant Summary collapse

MAX_PASSWD_LENGTH = 
255

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Passwd 



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# File 'lib/htauth/cli/passwd.rb', line 15

def initialize
  @passwd_file = nil
  @option_parser = nil
  @options = nil
end

Instance Attribute Details

#passwd_file ⇒ Object

Returns the value of attribute passwd_file.



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# File 'lib/htauth/cli/passwd.rb', line 13

def passwd_file
  @passwd_file
end

Instance Method Details

#fetch_password(width = 20) ⇒ Object 



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# File 'lib/htauth/cli/passwd.rb', line 171

def fetch_password(width=20)
  return options.password if options.batch_mode
  console = Console.new
  if options.read_stdin_once then
    pw_in = console.read_answer
    return pw_in
  end

  case options.operation
  when :verify
    pw_in = console.ask("Enter password: ".rjust(width))
    raise PasswordError, "password '#{pw_in}' too long" if pw_in.length >= MAX_PASSWD_LENGTH
  when :add_or_update
    pw_in = console.ask("New password: ".rjust(width))
    raise PasswordError, "password '#{pw_in}' too long" if pw_in.length >= MAX_PASSWD_LENGTH

    pw_validate = console.ask("Re-type new password: ".rjust(width))
    raise PasswordError, "They don't match, sorry." unless pw_in == pw_validate
  end

  return pw_in
end

#option_parser ⇒ Object 



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# File 'lib/htauth/cli/passwd.rb', line 40

def option_parser
  if not @option_parser then
    @option_parser = OptionParser.new(nil, 16) do |op|
      op.banner = "Usage:\n  \#{op.program_name} [-acimBdpsD] [--verify] [-C cost] passwordfile username\n  \#{op.program_name} -b[acmBdpsD] [--verify] [-C cost] passwordfile username password\n\n  \#{op.program_name} -n[imBdps] [-C cost] username\n  \#{op.program_name} -nb[mBdps] [-C cost] username password\n      EOB\n\n      op.separator \"\"\n\n      op.on(\"--argon2\", \"Force argon2 encryption of the password.\") do |a|\n        options.algorithm = Algorithm::ARGON2\n      end\n\n      op.on(\"-b\", \"--batch\", \"Batch mode, get the password from the command line, rather than prompt.\") do |b|\n        options.batch_mode = b\n      end\n\n      op.on(\"-B\", \"--bcrypt\", \"Force bcrypt encryption of the password.\") do |b|\n        options.algorithm = Algorithm::BCRYPT\n      end\n\n      op.on(\"-CCOST\", \"--cost COST\", \"Set the computing time used for the bcrypt algorithm\",\n                                     \"(higher is more secure but slower, default: 5, valid: 4 to 31).\") do |c|\n        if c !~ /\\A\\d+\\z/ then\n            raise ::OptionParser::ParseError, \"the bcrypt cost must be an integer from 4 to 31, `\#{c}` is invalid\"\n        end\n\n        cost = c.to_i\n        if (4..31).include?(cost)\n          options.algorithm_args = { :cost => cost }\n        else\n          raise ::OptionParser::ParseError, \"the bcrypt cost must be an integer from 4 to 31, `\#{c}` is invalid\"\n        end\n      end\n\n      op.on(\"-c\", \"--create\", \"Create a new file; this overwrites an existing file.\") do |c|\n        options.file_mode = HTAuth::File::CREATE\n        options.operation << :add_or_update\n      end\n\n      op.on(\"-d\", \"--crypt\", \"Force CRYPT encryption of the password.\") do |c|\n        options.algorithm = Algorithm::CRYPT\n      end\n\n      op.on(\"-D\", \"--delete\", \"Delete the specified user.\") do |d|\n        options.operation << :delete\n      end\n\n      op.on(\"-h\", \"--help\", \"Display this help.\") do |h|\n        options.show_help = h\n      end\n\n      op.on(\"-i\", \"--stdin\", \"Read the passwod from stdin without verivication (for script usage).\") do |i|\n        options.read_stdin_once = true\n      end\n\n      op.on(\"-m\", \"--md5\", \"Force MD5 encryption of the password (default).\") do |m|\n        options.algorithm = Algorithm::MD5\n      end\n\n      op.on(\"-n\", \"--stdout\", \"Do not update the file; Display the results on stdout instead.\") do |n|\n        options.send_to_stdout = true\n        options.passwdfile     = HTAuth::File::STDOUT_FLAG\n        options.operation     << :stdout\n      end\n\n      op.on(\"-p\", \"--plaintext\", \"Do not encrypt the password (plaintext).\") do |p|\n        options.algorithm = Algorithm::PLAINTEXT\n      end\n\n      op.on(\"-s\", \"--sha1\", \"Force SHA encryption of the password.\") do |s|\n        options.algorithm = Algorithm::SHA1\n      end\n\n      op.on(\"-v\", \"--version\", \"Show version info.\") do |v|\n        options.show_version = v\n      end\n\n      op.on(\"--verify\", \"Verify password for the specified user.\") do |v|\n        options.operation << :verify\n      end\n\n      op.separator \"\"\n\n      op.separator \"The SHA algorihtm does not use a salt and is less secure than the MD5 algorithm.\"\n    end\n  end\n  @option_parser\nend\n"

#options ⇒ Object 



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# File 'lib/htauth/cli/passwd.rb', line 21

def options
  if @options.nil? then
    @options                = ::OpenStruct.new
    @options.batch_mode     = false
    @options.file_mode      = File::ALTER
    @options.passwdfile     = nil
    @options.algorithm      = Algorithm::EXISTING
    @options.algorithm_args = {}
    @options.read_stdin_once= false
    @options.send_to_stdout = false
    @options.show_version   = false
    @options.show_help      = false
    @options.username       = nil
    @options.password       = ""
    @options.operation      = []
  end
  @options
end

#parse_options(argv) ⇒ Object 



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# File 'lib/htauth/cli/passwd.rb', line 145

def parse_options(argv)
  begin
    option_parser.parse!(argv)
    show_version if options.show_version
    show_help if options.show_help

    raise ::OptionParser::ParseError, "only one of --create, --stdout, --verify, --delete may be specified" if options.operation.size > 1
    raise ::OptionParser::ParseError, "Unable to send to stdout AND create a new file" if options.send_to_stdout and (options.file_mode == File::CREATE)
    raise ::OptionParser::ParseError, "a username is needed" if options.send_to_stdout and argv.size < 1
    raise ::OptionParser::ParseError, "a username and password are needed" if options.send_to_stdout and options.batch_mode  and ( argv.size < 2 ) 
    raise ::OptionParser::ParseError, "a passwordfile, username and password are needed " if not options.send_to_stdout and options.batch_mode and ( argv.size < 3 )
    raise ::OptionParser::ParseError, "a passwordfile and username are needed" if argv.size < 2
    raise ::OptionParser::ParseError, "options -i and -b are mutually exclusive" if options.batch_mode && options.read_stdin_once

    options.operation  = options.operation.shift || :add_or_update
    options.passwdfile = argv.shift unless options.send_to_stdout
    options.username   = argv.shift
    options.password   = argv.shift if options.batch_mode

  rescue ::OptionParser::ParseError => pe
    $stderr.puts "ERROR: #{option_parser.program_name} - #{pe}"
    show_help
    exit 1
  end
end

#run(argv, env = ENV) ⇒ Object 



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# File 'lib/htauth/cli/passwd.rb', line 194

def run(argv, env = ENV)
  begin
    parse_options(argv)
    console = Console.new
    passwd_file = PasswdFile.new(options.passwdfile, options.file_mode)
    case options.operation
    when :delete
      passwd_file.delete(options.username)
      passwd_file.save!
    when :verify
      if passwd_file.has_entry?(options.username) then
        pw_in = fetch_password
        if passwd_file.authenticated?(options.username, pw_in) then
          $stderr.puts "Password for user #{options.username} correct."
        else
          raise HTAuth::Error, "Password verification for user #{options.username} failed."
        end
      else
        raise HTAuth::Error, "User #{options.username} not found"
      end
    when :add_or_update
      options.password = fetch_password
      action = passwd_file.has_entry?(options.username) ? "Changing" : "Adding"
      console.say "#{action} password for #{options.username}."
      passwd_file.add_or_update(options.username, options.password, options.algorithm, options.algorithm_args)
      passwd_file.save!
    when :stdout
      options.password = fetch_password
      passwd_file.add_or_update(options.username, options.password, options.algorithm, options.algorithm_args)
      passwd_file.save!
    end
  rescue HTAuth::FileAccessError => fae
    msg = "Password file failure (#{options.passwdfile}) "
    $stderr.puts "#{msg}: #{fae.message}"
    exit 1
  rescue HTAuth::Error => pe
    $stderr.puts "#{pe.message}"
    exit 1
  rescue SignalException => se
    $stderr.puts
    $stderr.puts "Interrupted #{se}"
    exit 1
  end
  exit 0
end

#show_help ⇒ Object 



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# File 'lib/htauth/cli/passwd.rb', line 135

def show_help
  $stdout.puts option_parser
  exit 1
end

#show_version ⇒ Object 



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# File 'lib/htauth/cli/passwd.rb', line 140

def show_version
  $stdout.puts "#{option_parser.program_name}: version #{HTAuth::VERSION}"
  exit 1
end