mirror of
https://github.com/puma/puma.git
synced 2022-11-09 13:48:40 -05:00
394 lines
11 KiB
Ruby
394 lines
11 KiB
Ruby
# frozen_string_literal: true
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require 'uri'
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require 'socket'
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require 'puma/const'
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require 'puma/util'
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require 'puma/configuration'
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module Puma
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if HAS_SSL
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require 'puma/minissl'
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require 'puma/minissl/context_builder'
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require 'puma/accept_nonblock'
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end
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class Binder
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include Puma::Const
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RACK_VERSION = [1,6].freeze
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def initialize(events, conf = Configuration.new)
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@events = events
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@listeners = []
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@inherited_fds = {}
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@activated_sockets = {}
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@unix_paths = []
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@proto_env = {
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"rack.version".freeze => RACK_VERSION,
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"rack.errors".freeze => events.stderr,
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"rack.multithread".freeze => conf.options[:max_threads] > 1,
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"rack.multiprocess".freeze => conf.options[:workers] >= 1,
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"rack.run_once".freeze => false,
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"SCRIPT_NAME".freeze => ENV['SCRIPT_NAME'] || "",
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# I'd like to set a default CONTENT_TYPE here but some things
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# depend on their not being a default set and inferring
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# it from the content. And so if i set it here, it won't
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# infer properly.
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"QUERY_STRING".freeze => "",
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SERVER_PROTOCOL => HTTP_11,
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SERVER_SOFTWARE => PUMA_SERVER_STRING,
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GATEWAY_INTERFACE => CGI_VER
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}
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@envs = {}
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@ios = []
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end
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attr_reader :ios, :listeners, :unix_paths, :proto_env, :envs, :activated_sockets, :inherited_fds
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attr_writer :ios, :listeners
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def env(sock)
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@envs.fetch(sock, @proto_env)
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end
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def close
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@ios.each { |i| i.close }
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end
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def connected_ports
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ios.map { |io| io.addr[1] }.uniq
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end
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def create_inherited_fds(env_hash)
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env_hash.select {|k,v| k =~ /PUMA_INHERIT_\d+/}.each do |_k, v|
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fd, url = v.split(":", 2)
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@inherited_fds[url] = fd.to_i
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end.keys # pass keys back for removal
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end
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# systemd socket activation.
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# LISTEN_FDS = number of listening sockets. e.g. 2 means accept on 2 sockets w/descriptors 3 and 4.
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# LISTEN_PID = PID of the service process, aka us
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# see https://www.freedesktop.org/software/systemd/man/systemd-socket-activate.html
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def create_activated_fds(env_hash)
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return [] unless env_hash['LISTEN_FDS'] && env_hash['LISTEN_PID'].to_i == $$
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env_hash['LISTEN_FDS'].to_i.times do |index|
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sock = TCPServer.for_fd(socket_activation_fd(index))
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key = begin # Try to parse as a path
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[:unix, Socket.unpack_sockaddr_un(sock.getsockname)]
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rescue ArgumentError # Try to parse as a port/ip
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port, addr = Socket.unpack_sockaddr_in(sock.getsockname)
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addr = "[#{addr}]" if addr =~ /\:/
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[:tcp, addr, port]
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end
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@activated_sockets[key] = sock
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@events.debug "Registered #{key.join ':'} for activation from LISTEN_FDS"
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end
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["LISTEN_FDS", "LISTEN_PID"] # Signal to remove these keys from ENV
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end
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def parse(binds, logger, log_msg = 'Listening')
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binds.each do |str|
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uri = URI.parse str
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case uri.scheme
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when "tcp"
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if fd = @inherited_fds.delete(str)
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io = inherit_tcp_listener uri.host, uri.port, fd
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logger.log "* Inherited #{str}"
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elsif sock = @activated_sockets.delete([ :tcp, uri.host, uri.port ])
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io = inherit_tcp_listener uri.host, uri.port, sock
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logger.log "* Activated #{str}"
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else
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params = Util.parse_query uri.query
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opt = params.key?('low_latency')
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bak = params.fetch('backlog', 1024).to_i
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io = add_tcp_listener uri.host, uri.port, opt, bak
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@ios.each do |i|
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next unless TCPServer === i
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addr = if i.local_address.ipv6?
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"[#{i.local_address.ip_unpack[0]}]:#{i.local_address.ip_unpack[1]}"
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else
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i.local_address.ip_unpack.join(':')
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end
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logger.log "* #{log_msg} on http://#{addr}"
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end
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end
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@listeners << [str, io] if io
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when "unix"
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path = "#{uri.host}#{uri.path}".gsub("%20", " ")
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if fd = @inherited_fds.delete(str)
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io = inherit_unix_listener path, fd
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logger.log "* Inherited #{str}"
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elsif sock = @activated_sockets.delete([ :unix, path ])
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io = inherit_unix_listener path, sock
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logger.log "* Activated #{str}"
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else
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umask = nil
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mode = nil
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backlog = 1024
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if uri.query
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params = Util.parse_query uri.query
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if u = params['umask']
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# Use Integer() to respect the 0 prefix as octal
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umask = Integer(u)
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end
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if u = params['mode']
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mode = Integer('0'+u)
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end
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if u = params['backlog']
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backlog = Integer(u)
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end
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end
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io = add_unix_listener path, umask, mode, backlog
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logger.log "* #{log_msg} on #{str}"
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end
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@listeners << [str, io]
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when "ssl"
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raise "Puma compiled without SSL support" unless HAS_SSL
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params = Util.parse_query uri.query
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ctx = MiniSSL::ContextBuilder.new(params, @events).context
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if fd = @inherited_fds.delete(str)
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logger.log "* Inherited #{str}"
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io = inherit_ssl_listener fd, ctx
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elsif sock = @activated_sockets.delete([ :tcp, uri.host, uri.port ])
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io = inherit_ssl_listener sock, ctx
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logger.log "* Activated #{str}"
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else
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io = add_ssl_listener uri.host, uri.port, ctx
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logger.log "* Listening on #{str}"
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end
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@listeners << [str, io] if io
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else
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logger.error "Invalid URI: #{str}"
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end
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end
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# If we inherited fds but didn't use them (because of a
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# configuration change), then be sure to close them.
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@inherited_fds.each do |str, fd|
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logger.log "* Closing unused inherited connection: #{str}"
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begin
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IO.for_fd(fd).close
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rescue SystemCallError
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end
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# We have to unlink a unix socket path that's not being used
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uri = URI.parse str
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if uri.scheme == "unix"
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path = "#{uri.host}#{uri.path}"
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File.unlink path
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end
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end
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# Also close any unused activated sockets
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@activated_sockets.each do |key, sock|
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logger.log "* Closing unused activated socket: #{key.join ':'}"
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begin
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sock.close
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rescue SystemCallError
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end
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# We have to unlink a unix socket path that's not being used
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File.unlink key[1] if key[0] == :unix
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end
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end
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# Tell the server to listen on host +host+, port +port+.
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# If +optimize_for_latency+ is true (the default) then clients connecting
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# will be optimized for latency over throughput.
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#
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# +backlog+ indicates how many unaccepted connections the kernel should
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# allow to accumulate before returning connection refused.
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#
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def add_tcp_listener(host, port, optimize_for_latency=true, backlog=1024)
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if host == "localhost"
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loopback_addresses.each do |addr|
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add_tcp_listener addr, port, optimize_for_latency, backlog
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end
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return
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end
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host = host[1..-2] if host and host[0..0] == '['
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tcp_server = TCPServer.new(host, port)
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if optimize_for_latency
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tcp_server.setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1)
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end
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tcp_server.setsockopt(Socket::SOL_SOCKET,Socket::SO_REUSEADDR, true)
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tcp_server.listen backlog
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@ios << tcp_server
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tcp_server
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end
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def inherit_tcp_listener(host, port, fd)
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if fd.kind_of? TCPServer
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s = fd
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else
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s = TCPServer.for_fd(fd)
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end
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@ios << s
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s
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end
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def add_ssl_listener(host, port, ctx,
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optimize_for_latency=true, backlog=1024)
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raise "Puma compiled without SSL support" unless HAS_SSL
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if host == "localhost"
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loopback_addresses.each do |addr|
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add_ssl_listener addr, port, ctx, optimize_for_latency, backlog
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end
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return
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end
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host = host[1..-2] if host[0..0] == '['
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s = TCPServer.new(host, port)
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if optimize_for_latency
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s.setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1)
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end
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s.setsockopt(Socket::SOL_SOCKET,Socket::SO_REUSEADDR, true)
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s.listen backlog
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ssl = MiniSSL::Server.new s, ctx
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env = @proto_env.dup
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env[HTTPS_KEY] = HTTPS
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@envs[ssl] = env
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@ios << ssl
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s
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end
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def inherit_ssl_listener(fd, ctx)
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raise "Puma compiled without SSL support" unless HAS_SSL
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if fd.kind_of? TCPServer
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s = fd
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else
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s = TCPServer.for_fd(fd)
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end
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ssl = MiniSSL::Server.new(s, ctx)
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env = @proto_env.dup
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env[HTTPS_KEY] = HTTPS
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@envs[ssl] = env
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@ios << ssl
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s
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end
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# Tell the server to listen on +path+ as a UNIX domain socket.
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#
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def add_unix_listener(path, umask=nil, mode=nil, backlog=1024)
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@unix_paths << path unless File.exist? path
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# Let anyone connect by default
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umask ||= 0
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begin
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old_mask = File.umask(umask)
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if File.exist? path
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begin
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old = UNIXSocket.new path
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rescue SystemCallError, IOError
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File.unlink path
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else
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old.close
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raise "There is already a server bound to: #{path}"
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end
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end
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s = UNIXServer.new(path)
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s.listen backlog
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@ios << s
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ensure
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File.umask old_mask
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end
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if mode
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File.chmod mode, path
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end
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env = @proto_env.dup
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env[REMOTE_ADDR] = "127.0.0.1"
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@envs[s] = env
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s
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end
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def inherit_unix_listener(path, fd)
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@unix_paths << path unless File.exist? path
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if fd.kind_of? TCPServer
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s = fd
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else
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s = UNIXServer.for_fd fd
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end
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@ios << s
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env = @proto_env.dup
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env[REMOTE_ADDR] = "127.0.0.1"
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@envs[s] = env
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s
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end
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def close_listeners
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listeners.each do |l, io|
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io.close unless io.closed? # Ruby 2.2 issue
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uri = URI.parse(l)
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next unless uri.scheme == 'unix'
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unix_path = "#{uri.host}#{uri.path}"
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File.unlink unix_path if unix_paths.include? unix_path
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end
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end
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def redirects_for_restart
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redirects = listeners.map { |a| [a[1].to_i, a[1].to_i] }.to_h
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redirects[:close_others] = true
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redirects
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end
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def redirects_for_restart_env
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listeners.each_with_object({}).with_index do |(listen, memo), i|
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memo["PUMA_INHERIT_#{i}"] = "#{listen[1].to_i}:#{listen[0]}"
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end
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end
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private
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def loopback_addresses
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Socket.ip_address_list.select do |addrinfo|
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addrinfo.ipv6_loopback? || addrinfo.ipv4_loopback?
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end.map { |addrinfo| addrinfo.ip_address }.uniq
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end
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def socket_activation_fd(int)
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int + 3 # 3 is the magic number you add to follow the SA protocol
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end
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end
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end
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