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# frozen-string-literal: true
module Plum
module Rack
class BaseListener
def stop
@server.close
end
def to_io
raise "not implemented"
end
def accept(svc)
raise "not implemented"
end
def method_missing(name, *args)
@server.__send__(name, *args)
end
end
class TCPListener < BaseListener
def initialize(lc)
@server = ::TCPServer.new(lc[:hostname], lc[:port])
end
def to_io
@server.to_io
end
def accept(svc)
sock = @server.accept
Thread.start {
begin
plum = ::Plum::HTTPServerConnection.new(sock.method(:write))
sess = Session.new(svc, sock, plum)
sess.run
rescue ::Plum::LegacyHTTPError => e
svc.logger.info "legacy HTTP client: #{e}"
sess = LegacySession.new(svc, e, sock)
sess.run
rescue Errno::ECONNRESET, Errno::ECONNABORTED, EOFError # closed
rescue => e
svc.log_exception(e)
ensure
sock.close
end
}
end
end
class TLSListener < BaseListener
def initialize(lc)
if lc[:certificate] && lc[:certificate_key]
cert = File.read(lc[:certificate])
key = File.read(lc[:certificate_key])
else
STDERR.puts "WARNING: using dummy certificate"
cert, key = dummy_key
end
ctx = OpenSSL::SSL::SSLContext.new
ctx.ssl_version = :TLSv1_2
ctx.alpn_select_cb = -> (protocols) { protocols.include?("h2") ? "h2" : protocols.first }
ctx.tmp_ecdh_callback = -> (sock, ise, keyl) { OpenSSL::PKey::EC.new("prime256v1") }
*ctx.extra_chain_cert, ctx.cert = parse_chained_cert(cert)
ctx.key = OpenSSL::PKey::RSA.new(key)
ctx.servername_cb = proc { |sock, hostname|
if host = lc[:sni]&.[](hostname)
new_ctx = ctx.dup
*new_ctx.extra_chain_cert, new_ctx.cert = parse_chained_cert(File.read(host[:certificate]))
new_ctx.key = OpenSSL::PKey::RSA.new(File.read(host[:certificate_key]))
new_ctx
else
ctx
end
}
tcp_server = ::TCPServer.new(lc[:hostname], lc[:port])
@server = OpenSSL::SSL::SSLServer.new(tcp_server, ctx)
@server.start_immediately = false # call socket#accept twice: [tcp, tls]
end
def parse_chained_cert(str)
str.scan(/-----BEGIN CERTIFICATE.+?END CERTIFICATE-----/m).map { |s| OpenSSL::X509::Certificate.new(s) }
end
def to_io
@server.to_io
end
def accept(svc)
sock = @server.accept
Thread.start {
begin
sock = sock.accept
raise ::Plum::LegacyHTTPError.new("client didn't offer h2 with ALPN", nil) unless sock.alpn_protocol == "h2"
plum = ::Plum::ServerConnection.new(sock.method(:write))
sess = Session.new(svc, sock, plum)
sess.run
rescue ::Plum::LegacyHTTPError => e
svc.logger.info "legacy HTTP client: #{e}"
sess = LegacySession.new(svc, e, sock)
sess.run
rescue Errno::ECONNRESET, Errno::ECONNABORTED, EOFError # closed
rescue => e
svc.log_exception(e)
ensure
sock.close if sock
end
}
end
private
# returns: [cert, key]
def dummy_key
STDERR.puts "WARNING: Generating new dummy certificate..."
key = OpenSSL::PKey::RSA.new(2048)
cert = OpenSSL::X509::Certificate.new
cert.subject = cert.issuer = OpenSSL::X509::Name.parse("/C=JP/O=Test/OU=Test/CN=example.com")
cert.not_before = Time.now
cert.not_after = Time.now + 363 * 24 * 60 * 60
cert.public_key = key.public_key
cert.serial = rand((1 << 20) - 1)
cert.version = 2
ef = OpenSSL::X509::ExtensionFactory.new(cert, cert)
cert.extensions = [
ef.create_extension("subjectKeyIdentifier", "hash")
]
cert.sign(key, OpenSSL::Digest::SHA256.new)
[cert.to_s, key.to_s]
end
end
class UNIXListener < BaseListener
def initialize(lc)
if File.exist?(lc[:path])
begin
old = UNIXSocket.new(lc[:path])
rescue SystemCallError, IOError
File.unlink(lc[:path])
else
old.close
raise "Already a server bound to: #{lc[:path]}"
end
end
@server = ::UNIXServer.new(lc[:path])
File.chmod(lc[:mode], lc[:path]) if lc[:mode]
end
def stop
super
File.unlink(lc[:path])
end
def to_io
@server.to_io
end
def accept(svc)
sock = @server.accept
Thread.start {
begin
plum = ::Plum::ServerConnection.new(sock.method(:write))
sess = Session.new(svc, sock, plum)
sess.run
rescue Errno::ECONNRESET, Errno::ECONNABORTED, EOFError # closed
rescue => e
svc.log_exception(e)
ensure
sock.close if sock
end
}
end
end
end
end
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