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module ActionDispatch
module Http
module URL
mattr_accessor :tld_length
self.tld_length = 1
class << self
def extract_domain(host, tld_length = @@tld_length)
return nil unless named_host?(host)
host.split('.').last(1 + tld_length).join('.')
end
def extract_subdomains(host, tld_length = @@tld_length)
return [] unless named_host?(host)
parts = host.split('.')
parts[0..-(tld_length+2)]
end
def extract_subdomain(host, tld_length = @@tld_length)
extract_subdomains(host, tld_length).join('.')
end
def url_for(options = {})
unless options[:host].present? || options[:only_path].present?
raise ArgumentError, 'Missing host to link to! Please provide the :host parameter, set default_url_options[:host], or set :only_path to true'
end
rewritten_url = ""
unless options[:only_path]
unless options[:protocol] == false
rewritten_url << (options[:protocol] || "http")
rewritten_url << ":" unless rewritten_url.match(%r{:|//})
end
rewritten_url << "//" unless rewritten_url.match("//")
rewritten_url << rewrite_authentication(options)
rewritten_url << host_or_subdomain_and_domain(options)
rewritten_url << ":#{options.delete(:port)}" if options[:port]
end
path = options.delete(:path) || ''
params = options[:params] || {}
params.reject! {|k,v| v.to_param.nil? }
rewritten_url << (options[:trailing_slash] ? path.sub(/\?|\z/) { "/" + $& } : path)
rewritten_url << "?#{params.to_query}" unless params.empty?
rewritten_url << "##{Rack::Mount::Utils.escape_uri(options[:anchor].to_param.to_s)}" if options[:anchor]
rewritten_url
end
private
def named_host?(host)
!(host.nil? || /\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/.match(host))
end
def rewrite_authentication(options)
if options[:user] && options[:password]
"#{Rack::Utils.escape(options[:user])}:#{Rack::Utils.escape(options[:password])}@"
else
""
end
end
def host_or_subdomain_and_domain(options)
return options[:host] if !named_host?(options[:host]) || (options[:subdomain].nil? && options[:domain].nil?)
tld_length = options[:tld_length] || @@tld_length
host = ""
unless options[:subdomain] == false
host << (options[:subdomain] || extract_subdomain(options[:host], tld_length)).to_param
host << "."
end
host << (options[:domain] || extract_domain(options[:host], tld_length))
host
end
end
# Returns the complete URL used for this request.
def url
protocol + host_with_port + fullpath
end
# Returns 'https://' if this is an SSL request and 'http://' otherwise.
def protocol
@protocol ||= ssl? ? 'https://' : 'http://'
end
# Returns the \host for this request, such as "example.com".
def raw_host_with_port
if forwarded = env["HTTP_X_FORWARDED_HOST"]
forwarded.split(/,\s?/).last
else
env['HTTP_HOST'] || "#{env['SERVER_NAME'] || env['SERVER_ADDR']}:#{env['SERVER_PORT']}"
end
end
# Returns the host for this request, such as example.com.
def host
raw_host_with_port.sub(/:\d+$/, '')
end
# Returns a \host:\port string for this request, such as "example.com" or
# "example.com:8080".
def host_with_port
"#{host}#{port_string}"
end
# Returns the port number of this request as an integer.
def port
@port ||= begin
if raw_host_with_port =~ /:(\d+)$/
$1.to_i
else
standard_port
end
end
end
# Returns the standard \port number for this request's protocol.
def standard_port
case protocol
when 'https://' then 443
else 80
end
end
# Returns whether this request is using the standard port
def standard_port?
port == standard_port
end
# Returns a number \port suffix like 8080 if the \port number of this request
# is not the default HTTP \port 80 or HTTPS \port 443.
def optional_port
standard_port? ? nil : port
end
# Returns a string \port suffix, including colon, like ":8080" if the \port
# number of this request is not the default HTTP \port 80 or HTTPS \port 443.
def port_string
standard_port? ? '' : ":#{port}"
end
def server_port
@env['SERVER_PORT'].to_i
end
# Returns the \domain part of a \host, such as "rubyonrails.org" in "www.rubyonrails.org". You can specify
# a different <tt>tld_length</tt>, such as 2 to catch rubyonrails.co.uk in "www.rubyonrails.co.uk".
def domain(tld_length = @@tld_length)
ActionDispatch::Http::URL.extract_domain(host, tld_length)
end
# Returns all the \subdomains as an array, so <tt>["dev", "www"]</tt> would be
# returned for "dev.www.rubyonrails.org". You can specify a different <tt>tld_length</tt>,
# such as 2 to catch <tt>["www"]</tt> instead of <tt>["www", "rubyonrails"]</tt>
# in "www.rubyonrails.co.uk".
def subdomains(tld_length = @@tld_length)
ActionDispatch::Http::URL.extract_subdomains(host, tld_length)
end
# Returns all the \subdomains as a string, so <tt>"dev.www"</tt> would be
# returned for "dev.www.rubyonrails.org". You can specify a different <tt>tld_length</tt>,
# such as 2 to catch <tt>"www"</tt> instead of <tt>"www.rubyonrails"</tt>
# in "www.rubyonrails.co.uk".
def subdomain(tld_length = @@tld_length)
subdomains(tld_length).join(".")
end
end
end
end
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