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Edit File: gemcutter_utilities.rb

# frozen_string_literal: true
require_relative 'remote_fetcher'
require_relative 'text'

##
# Utility methods for using the RubyGems API.

module Gem::GemcutterUtilities

ERROR_CODE = 1
  API_SCOPES = %i[index_rubygems push_rubygem yank_rubygem add_owner remove_owner access_webhooks show_dashboard].freeze

include Gem::Text

attr_writer :host
  attr_writer :scope

##
  # Add the --key option

def add_key_option
    add_option('-k', '--key KEYNAME', Symbol,
               'Use the given API key',
               "from #{Gem.configuration.credentials_path}") do |value,options|
      options[:key] = value
    end
  end

##
  # Add the --otp option

def add_otp_option
    add_option('--otp CODE',
               'Digit code for multifactor authentication',
               'You can also use the environment variable GEM_HOST_OTP_CODE') do |value, options|
      options[:otp] = value
    end
  end

##
  # The API key from the command options or from the user's configuration.

def api_key
    if ENV["GEM_HOST_API_KEY"]
      ENV["GEM_HOST_API_KEY"]
    elsif options[:key]
      verify_api_key options[:key]
    elsif Gem.configuration.api_keys.key?(host)
      Gem.configuration.api_keys[host]
    else
      Gem.configuration.rubygems_api_key
    end
  end

##
  # The OTP code from the command options or from the user's configuration.

def otp
    options[:otp] || ENV["GEM_HOST_OTP_CODE"]
  end

##
  # The host to connect to either from the RUBYGEMS_HOST environment variable
  # or from the user's configuration

def host
    configured_host = Gem.host unless
      Gem.configuration.disable_default_gem_server

@host ||=
      begin
        env_rubygems_host = ENV['RUBYGEMS_HOST']
        env_rubygems_host = nil if
          env_rubygems_host and env_rubygems_host.empty?

env_rubygems_host || configured_host
      end
  end

##
  # Creates an RubyGems API to +host+ and +path+ with the given HTTP +method+.
  #
  # If +allowed_push_host+ metadata is present, then it will only allow that host.

def rubygems_api_request(method, path, host = nil, allowed_push_host = nil, scope: nil, &block)
    require 'net/http'

self.host = host if host
    unless self.host
      alert_error "You must specify a gem server"
      terminate_interaction(ERROR_CODE)
    end

if allowed_push_host
      allowed_host_uri = URI.parse(allowed_push_host)
      host_uri         = URI.parse(self.host)

unless (host_uri.scheme == allowed_host_uri.scheme) && (host_uri.host == allowed_host_uri.host)
        alert_error "#{self.host.inspect} is not allowed by the gemspec, which only allows #{allowed_push_host.inspect}"
        terminate_interaction(ERROR_CODE)
      end
    end

uri = URI.parse "#{self.host}/#{path}"
    response = request_with_otp(method, uri, &block)

if mfa_unauthorized?(response)
      ask_otp
      response = request_with_otp(method, uri, &block)
    end

if api_key_forbidden?(response)
      update_scope(scope)
      request_with_otp(method, uri, &block)
    else
      response
    end
  end

def mfa_unauthorized?(response)
    response.kind_of?(Net::HTTPUnauthorized) && response.body.start_with?('You have enabled multifactor authentication')
  end

def update_scope(scope)
    sign_in_host        = self.host
    pretty_host         = pretty_host(sign_in_host)
    update_scope_params = { scope => true }

say "The existing key doesn't have access of #{scope} on #{pretty_host}. Please sign in to update access."

email    = ask "   Email: "
    password = ask_for_password "Password: "

response = rubygems_api_request(:put, "api/v1/api_key",
                                    sign_in_host, scope: scope) do |request|
      request.basic_auth email, password
      request["OTP"] = otp if otp
      request.body = URI.encode_www_form({:api_key => api_key }.merge(update_scope_params))
    end

with_response response do |resp|
      say "Added #{scope} scope to the existing API key"
    end
  end

##
  # Signs in with the RubyGems API at +sign_in_host+ and sets the rubygems API
  # key.

def sign_in(sign_in_host = nil, scope: nil)
    sign_in_host ||= self.host
    return if api_key

pretty_host = pretty_host(sign_in_host)

say "Enter your #{pretty_host} credentials."
    say "Don't have an account yet? " +
        "Create one at #{sign_in_host}/sign_up"

email = ask "   Email: "
    password = ask_for_password "Password: "
    say "\n"

key_name     = get_key_name(scope)
    scope_params = get_scope_params(scope)

response = rubygems_api_request(:post, "api/v1/api_key",
                                    sign_in_host, scope: scope) do |request|
      request.basic_auth email, password
      request["OTP"] = otp if otp
      request.body = URI.encode_www_form({ name: key_name }.merge(scope_params))
    end

with_response response do |resp|
      say "Signed in with API key: #{key_name}."
      set_api_key host, resp.body
    end
  end

##
  # Retrieves the pre-configured API key +key+ or terminates interaction with
  # an error.

def verify_api_key(key)
    if Gem.configuration.api_keys.key? key
      Gem.configuration.api_keys[key]
    else
      alert_error "No such API key. Please add it to your configuration (done automatically on initial `gem push`)."
      terminate_interaction(ERROR_CODE)
    end
  end

##
  # If +response+ is an HTTP Success (2XX) response, yields the response if a
  # block was given or shows the response body to the user.
  #
  # If the response was not successful, shows an error to the user including
  # the +error_prefix+ and the response body.

def with_response(response, error_prefix = nil)
    case response
    when Net::HTTPSuccess then
      if block_given?
        yield response
      else
        say clean_text(response.body)
      end
    else
      message = response.body
      message = "#{error_prefix}: #{message}" if error_prefix

say clean_text(message)
      terminate_interaction(ERROR_CODE)
    end
  end

##
  # Returns true when the user has enabled multifactor authentication from
  # +response+ text and no otp provided by options.

def set_api_key(host, key)
    if host == Gem::DEFAULT_HOST
      Gem.configuration.rubygems_api_key = key
    else
      Gem.configuration.set_api_key host, key
    end
  end

private

def request_with_otp(method, uri, &block)
    request_method = Net::HTTP.const_get method.to_s.capitalize

Gem::RemoteFetcher.fetcher.request(uri, request_method) do |req|
      req["OTP"] = otp if otp
      block.call(req)
    end
  end

def ask_otp
    say 'You have enabled multi-factor authentication. Please enter OTP code.'
    options[:otp] = ask 'Code: '
  end

def pretty_host(host)
    if Gem::DEFAULT_HOST == host
      'RubyGems.org'
    else
      host
    end
  end

def get_scope_params(scope)
    scope_params = {}

if scope
      scope_params = { scope => true }
    else
      say "Please select scopes you want to enable for the API key (y/n)"
      API_SCOPES.each do |scope|
        selected = ask "#{scope} [y/N]: "
        scope_params[scope] = true if selected =~ /^[yY](es)?$/
      end
      say "\n"
    end

scope_params
  end

def get_key_name(scope)
    hostname = Socket.gethostname || "unknown-host"
    user = ENV["USER"] || ENV["USERNAME"] || "unknown-user"
    ts = Time.now.strftime("%Y%m%d%H%M%S")
    default_key_name = "#{hostname}-#{user}-#{ts}"

key_name = ask "API Key name [#{default_key_name}]: " unless scope
    if key_name.nil? || key_name.empty?
      default_key_name
    else
      key_name
    end
  end

def api_key_forbidden?(response)
    response.kind_of?(Net::HTTPForbidden) && response.body.start_with?("The API key doesn't have access")
  end
end

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