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|
# frozen_string_literal: true
class ActiveSession
include ActiveModel::Model
SESSION_BATCH_SIZE = 200
ALLOWED_NUMBER_OF_ACTIVE_SESSIONS = 100
attr_writer :session_id
attr_accessor :created_at, :updated_at,
:ip_address, :browser, :os,
:device_name, :device_type,
:is_impersonated
def current?(session)
return false if session_id.nil? || session.id.nil?
session_id == session.id
end
def human_device_type
device_type&.titleize
end
def public_id
encrypted_id = Gitlab::CryptoHelper.aes256_gcm_encrypt(session_id)
CGI.escape(encrypted_id)
end
def self.set(user, request)
Gitlab::Redis::SharedState.with do |redis|
session_id = request.session.id
client = DeviceDetector.new(request.user_agent)
timestamp = Time.current
active_user_session = new(
ip_address: request.ip,
browser: client.name,
os: client.os_name,
device_name: client.device_name,
device_type: client.device_type,
created_at: user.current_sign_in_at || timestamp,
updated_at: timestamp,
session_id: session_id,
is_impersonated: request.session[:impersonator_id].present?
)
redis.pipelined do
redis.setex(
key_name(user.id, session_id),
Settings.gitlab['session_expire_delay'] * 60,
Marshal.dump(active_user_session)
)
redis.sadd(
lookup_key_name(user.id),
session_id
)
end
end
end
def self.list(user)
Gitlab::Redis::SharedState.with do |redis|
cleaned_up_lookup_entries(redis, user).map do |entry|
# rubocop:disable Security/MarshalLoad
Marshal.load(entry)
# rubocop:enable Security/MarshalLoad
end
end
end
def self.destroy(user, session_id)
Gitlab::Redis::SharedState.with do |redis|
destroy_sessions(redis, user, [session_id])
end
end
def self.destroy_with_public_id(user, public_id)
session_id = decrypt_public_id(public_id)
destroy(user, session_id) unless session_id.nil?
end
def self.destroy_sessions(redis, user, session_ids)
key_names = session_ids.map {|session_id| key_name(user.id, session_id) }
session_names = session_ids.map {|session_id| "#{Gitlab::Redis::SharedState::SESSION_NAMESPACE}:#{session_id}" }
redis.srem(lookup_key_name(user.id), session_ids)
redis.del(key_names)
redis.del(session_names)
end
def self.cleanup(user)
Gitlab::Redis::SharedState.with do |redis|
clean_up_old_sessions(redis, user)
cleaned_up_lookup_entries(redis, user)
end
end
def self.key_name(user_id, session_id = '*')
"#{Gitlab::Redis::SharedState::USER_SESSIONS_NAMESPACE}:#{user_id}:#{session_id}"
end
def self.lookup_key_name(user_id)
"#{Gitlab::Redis::SharedState::USER_SESSIONS_LOOKUP_NAMESPACE}:#{user_id}"
end
def self.list_sessions(user)
sessions_from_ids(session_ids_for_user(user.id))
end
def self.session_ids_for_user(user_id)
Gitlab::Redis::SharedState.with do |redis|
redis.smembers(lookup_key_name(user_id))
end
end
def self.sessions_from_ids(session_ids)
return [] if session_ids.empty?
Gitlab::Redis::SharedState.with do |redis|
session_keys = session_ids.map { |session_id| "#{Gitlab::Redis::SharedState::SESSION_NAMESPACE}:#{session_id}" }
session_keys.each_slice(SESSION_BATCH_SIZE).flat_map do |session_keys_batch|
redis.mget(session_keys_batch).compact.map do |raw_session|
# rubocop:disable Security/MarshalLoad
Marshal.load(raw_session)
# rubocop:enable Security/MarshalLoad
end
end
end
end
def self.raw_active_session_entries(redis, session_ids, user_id)
return [] if session_ids.empty?
entry_keys = session_ids.map { |session_id| key_name(user_id, session_id) }
redis.mget(entry_keys)
end
def self.active_session_entries(session_ids, user_id, redis)
return [] if session_ids.empty?
entry_keys = raw_active_session_entries(redis, session_ids, user_id)
entry_keys.compact.map do |raw_session|
Marshal.load(raw_session) # rubocop:disable Security/MarshalLoad
end
end
def self.clean_up_old_sessions(redis, user)
session_ids = session_ids_for_user(user.id)
return if session_ids.count <= ALLOWED_NUMBER_OF_ACTIVE_SESSIONS
# remove sessions if there are more than ALLOWED_NUMBER_OF_ACTIVE_SESSIONS.
sessions = active_session_entries(session_ids, user.id, redis)
sessions.sort_by! {|session| session.updated_at }.reverse!
destroyable_sessions = sessions.drop(ALLOWED_NUMBER_OF_ACTIVE_SESSIONS)
destroyable_session_ids = destroyable_sessions.map { |session| session.send :session_id } # rubocop:disable GitlabSecurity/PublicSend
destroy_sessions(redis, user, destroyable_session_ids) if destroyable_session_ids.any?
end
def self.cleaned_up_lookup_entries(redis, user)
session_ids = session_ids_for_user(user.id)
entries = raw_active_session_entries(redis, session_ids, user.id)
# remove expired keys.
# only the single key entries are automatically expired by redis, the
# lookup entries in the set need to be removed manually.
session_ids_and_entries = session_ids.zip(entries)
redis.pipelined do
session_ids_and_entries.reject { |_session_id, entry| entry }.each do |session_id, _entry|
redis.srem(lookup_key_name(user.id), session_id)
end
end
entries.compact
end
private_class_method def self.decrypt_public_id(public_id)
decoded_id = CGI.unescape(public_id)
Gitlab::CryptoHelper.aes256_gcm_decrypt(decoded_id)
rescue
nil
end
private
attr_reader :session_id
end
|
