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require 'active_support/core_ext/hash/except'
require 'active_support/core_ext/hash/slice'
module ActionController
# This module provides a method which will redirect browser to use HTTPS
# protocol. This will ensure that user's sensitive information will be
# transferred safely over the internet. You _should_ always force browser
# to use HTTPS when you're transferring sensitive information such as
# user authentication, account information, or credit card information.
#
# Note that if you are really concerned about your application security,
# you might consider using +config.force_ssl+ in your config file instead.
# That will ensure all the data transferred via HTTPS protocol and prevent
# user from getting session hijacked when accessing the site under unsecured
# HTTP protocol.
module ForceSSL
extend ActiveSupport::Concern
include AbstractController::Callbacks
ACTION_OPTIONS = [:only, :except, :if, :unless]
URL_OPTIONS = [:protocol, :host, :domain, :subdomain, :port, :path]
REDIRECT_OPTIONS = [:status, :flash, :alert, :notice]
module ClassMethods
# Force the request to this particular controller or specified actions to be
# under HTTPS protocol.
#
# If you need to disable this for any reason (e.g. development) then you can use
# an +:if+ or +:unless+ condition.
#
# class AccountsController < ApplicationController
# force_ssl if: :ssl_configured?
#
# def ssl_configured?
# !Rails.env.development?
# end
# end
#
# ==== URL Options
# You can pass any of the following options to affect the redirect url
# * <tt>host</tt> - Redirect to a different host name
# * <tt>subdomain</tt> - Redirect to a different subdomain
# * <tt>domain</tt> - Redirect to a different domain
# * <tt>port</tt> - Redirect to a non-standard port
# * <tt>path</tt> - Redirect to a different path
#
# ==== Redirect Options
# You can pass any of the following options to affect the redirect status and response
# * <tt>status</tt> - Redirect with a custom status (default is 301 Moved Permanently)
# * <tt>flash</tt> - Set a flash message when redirecting
# * <tt>alert</tt> - Set an alert message when redirecting
# * <tt>notice</tt> - Set a notice message when redirecting
#
# ==== Action Options
# You can pass any of the following options to affect the before_action callback
# * <tt>only</tt> - The callback should be run only for this action
# * <tt>except</tt> - The callback should be run for all actions except this action
# * <tt>if</tt> - A symbol naming an instance method or a proc; the callback
# will be called only when it returns a true value.
# * <tt>unless</tt> - A symbol naming an instance method or a proc; the callback
# will be called only when it returns a false value.
def force_ssl(options = {})
action_options = options.slice(*ACTION_OPTIONS)
redirect_options = options.except(*ACTION_OPTIONS)
before_action(action_options) do
force_ssl_redirect(redirect_options)
end
end
end
# Redirect the existing request to use the HTTPS protocol.
#
# ==== Parameters
# * <tt>host_or_options</tt> - Either a host name or any of the url & redirect options
# available to the <tt>force_ssl</tt> method.
def force_ssl_redirect(host_or_options = nil)
unless request.ssl?
options = {
:protocol => 'https://',
:host => request.host,
:path => request.fullpath,
:status => :moved_permanently
}
if host_or_options.is_a?(Hash)
options.merge!(host_or_options)
elsif host_or_options
options.merge!(:host => host_or_options)
end
secure_url = ActionDispatch::Http::URL.url_for(options.slice(*URL_OPTIONS))
flash.keep if respond_to?(:flash)
redirect_to secure_url, options.slice(*REDIRECT_OPTIONS)
end
end
end
end
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