lib/ronin/support/network/imap/mixin.rb
# frozen_string_literal: true
#
# Copyright (c) 2006-2023 Hal Brodigan (postmodern.mod3 at gmail.com)
#
# ronin-support is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# ronin-support is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with ronin-support. If not, see <https://www.gnu.org/licenses/>.
#
require 'ronin/support/network/dns/idn'
require 'ronin/support/network/ssl'
begin
require 'net/imap'
rescue LoadError => error
warn "ronin/network/imap requires the net-imap gem be listed in the Gemfile."
raise(error)
end
module Ronin
module Support
module Network
module IMAP
#
# Provides helper methods for communicating with IMAP services.
#
module Mixin
# Default IMAP port
DEFAULT_PORT = 143
# Authentication types.
AUTH_TYPES = {
login: 'LOGIN',
cram_md5: 'CRAM_MD5'
}
#
# Creates a connection to the IMAP server.
#
# @param [String] host
# The host to connect to.
#
# @param [String, nil] user
# The user to authenticate as when connecting to the server.
#
# @param [String, nil] password
# The password to authenticate with when connecting to the server.
#
# @param [Integer] port
# The port the IMAP server is running on.
#
# @param [Boolean, Hash, nil] ssl
# Additional SSL options.
#
# @option ssl [Boolean] :verify
# Specifies that the SSL certificate should be verified.
#
# @option ssl [String] :certs
# The path to the file containing CA certs of the server.
#
# @param [:login, :cram_md5] auth
# The type of authentication to perform when connecting to the
# server. May be either `:login` or `:cram_md5`.
#
# @yield [imap]
# If a block is given, it will be passed the newly created IMAP
# session. Once the block returns, it will close the IMAP session.
#
# @yieldparam [Net::IMAP] imap
# The newly created IMAP session object.
#
# @return [Net::IMAP, nil]
# The newly created IMAP session object. If a block is given, `nil`
# will be returned.
#
# @raise [ArgumentType]
# The `auth:` keyword argument must be either `:login` or
# `:cram_md5`.
#
# @api public
#
def imap_connect(host, user: ,
password: ,
port: DEFAULT_PORT,
ssl: nil,
auth: :login)
host = DNS::IDN.to_ascii(host)
auth_type = AUTH_TYPES.fetch(auth) do
raise(ArgumentError,"auth: must be either :login or :cram_md5")
end
case ssl
when Hash
ssl = true
ssl_certs = ssl[:certs]
ssl_verify = Network::SSL::VERIFY[ssl[:verify]]
when TrueClass
ssl = true
ssl_certs = nil
ssl_verify = nil
else
ssl = false
ssl_certs = nil
ssl_verify = false
end
imap = Net::IMAP.new(host,port,ssl,ssl_certs,ssl_verify)
imap.authenticate(auth_type,user,passwd)
if block_given?
yield imap
imap.logout
imap.close
imap.disconnect
else
return imap
end
end
end
end
end
end
end