Module: Rex::Socket::SslTcpServer
- Includes:
- TcpServer
- Defined in:
- lib/rex/socket/ssl_tcp_server.rb
Overview
This class provides methods for interacting with an SSL wrapped TCP server. It implements the StreamServer IO interface.
Defined Under Namespace
Classes: UnitTest
Constant Summary collapse
- @@loaded_openssl =
false
Instance Attribute Summary collapse
-
#sslctx ⇒ Object
Returns the value of attribute sslctx.
Attributes included from IO::StreamServer
#client_waiter, #clients, #clients_thread, #listener_thread, #on_client_close_proc, #on_client_connect_proc, #on_client_data_proc
Attributes included from Rex::Socket
#context, #ipv, #localhost, #localport, #peerhost, #peerport
Class Method Summary collapse
-
.create(hash = {}) ⇒ Object
Factory.
-
.create_param(param) ⇒ Object
Wrapper around the base class’ creation method that automatically sets the parameter’s protocol to TCP and sets the server flag to true.
Instance Method Summary collapse
- #accept(opts = {}) ⇒ Object
-
#allow_nonblock?(sock = self.sock) ⇒ Boolean
This flag determines whether to use the non-blocking openssl API calls when they are available.
- #initsock(params = nil) ⇒ Object
-
#makessl(ssl_cert = nil) ⇒ Object
Create a new ssl context.
Methods included from IO::StreamServer
#close_client, #on_client_close, #on_client_connect, #on_client_data, #start, #stop, #wait
Methods included from Rex::Socket
addr_atoc, addr_atoi, addr_aton, addr_ctoa, addr_itoa, addr_iton, addr_ntoa, addr_ntoi, bit2netmask, cidr_crack, create_ip, create_tcp, create_tcp_server, create_udp, dotted_ip?, #fd, from_sockaddr, getaddress, gethostbyname, #getlocalname, #getpeername, #getsockname, ipv6_link_address, ipv6_mac, is_internal?, is_ipv4?, is_ipv6?, net2bitmask, portlist_to_portspec, portspec_crack, portspec_to_portlist, resolv_nbo, resolv_nbo_i, resolv_to_dotted, source_address, support_ipv6?, tcp_socket_pair, to_sockaddr, #type?, udp_socket_pair
Instance Attribute Details
#sslctx ⇒ Object
Returns the value of attribute sslctx.
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# File 'lib/rex/socket/ssl_tcp_server.rb', line 170 def sslctx @sslctx end |
Class Method Details
.create(hash = {}) ⇒ Object
Factory
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# File 'lib/rex/socket/ssl_tcp_server.rb', line 30 def self.create(hash = {}) hash['Proto'] = 'tcp' hash['Server'] = true hash['SSL'] = true self.create_param(Rex::Socket::Parameters.from_hash(hash)) end |
.create_param(param) ⇒ Object
Wrapper around the base class’ creation method that automatically sets the parameter’s protocol to TCP and sets the server flag to true.
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# File 'lib/rex/socket/ssl_tcp_server.rb', line 41 def self.create_param(param) param.proto = 'tcp' param.server = true param.ssl = true Rex::Socket.create_param(param) end |
Instance Method Details
#accept(opts = {}) ⇒ Object
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# File 'lib/rex/socket/ssl_tcp_server.rb', line 54 def accept(opts = {}) sock = super() return if not sock begin ssl = OpenSSL::SSL::SSLSocket.new(sock, self.sslctx) if not allow_nonblock?(ssl) ssl.accept else begin ssl.accept_nonblock # Ruby 1.8.7 and 1.9.0/1.9.1 uses a standard Errno rescue ::Errno::EAGAIN, ::Errno::EWOULDBLOCK IO::select(nil, nil, nil, 0.10) retry # Ruby 1.9.2+ uses IO::WaitReadable/IO::WaitWritable rescue ::Exception => e if ::IO.const_defined?('WaitReadable') and e.kind_of?(::IO::WaitReadable) IO::select( [ ssl ], nil, nil, 0.10 ) retry end if ::IO.const_defined?('WaitWritable') and e.kind_of?(::IO::WaitWritable) IO::select( nil, [ ssl ], nil, 0.10 ) retry end raise e end end sock.extend(Rex::Socket::SslTcp) sock.sslsock = ssl sock.sslctx = self.sslctx return sock rescue ::OpenSSL::SSL::SSLError sock.close nil end end |
#allow_nonblock?(sock = self.sock) ⇒ Boolean
This flag determines whether to use the non-blocking openssl API calls when they are available. This is still buggy on Linux/Mac OS X, but is required on Windows
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# File 'lib/rex/socket/ssl_tcp_server.rb', line 162 def allow_nonblock?(sock=self.sock) avail = sock.respond_to?(:accept_nonblock) if avail and Rex::Compat.is_windows return true end false end |
#initsock(params = nil) ⇒ Object
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# File 'lib/rex/socket/ssl_tcp_server.rb', line 48 def initsock(params = nil) raise RuntimeError, "No OpenSSL support" if not @@loaded_openssl self.sslctx = makessl(params.ssl_cert) super end |
#makessl(ssl_cert = nil) ⇒ Object
Create a new ssl context. If ssl_cert
is not given, generates a new key and a leaf certificate with random values.
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# File 'lib/rex/socket/ssl_tcp_server.rb', line 105 def makessl(ssl_cert=nil) if ssl_cert cert = OpenSSL::X509::Certificate.new(ssl_cert) key = OpenSSL::PKey::RSA.new(ssl_cert) else key = OpenSSL::PKey::RSA.new(1024){ } cert = OpenSSL::X509::Certificate.new cert.version = 2 cert.serial = rand(0xFFFFFFFF) # name = OpenSSL::X509::Name.new([["C","JP"],["O","TEST"],["CN","localhost"]]) subject = OpenSSL::X509::Name.new([ ["C","US"], ['ST', Rex::Text.rand_state()], ["L", Rex::Text.rand_text_alpha(rand(20) + 10)], ["O", Rex::Text.rand_text_alpha(rand(20) + 10)], ["CN", Rex::Text.rand_hostname], ]) issuer = OpenSSL::X509::Name.new([ ["C","US"], ['ST', Rex::Text.rand_state()], ["L", Rex::Text.rand_text_alpha(rand(20) + 10)], ["O", Rex::Text.rand_text_alpha(rand(20) + 10)], ["CN", Rex::Text.rand_hostname], ]) cert.subject = subject cert.issuer = issuer cert.not_before = Time.now - (3600 * 365) cert.not_after = Time.now + (3600 * 365) cert.public_key = key.public_key ef = OpenSSL::X509::ExtensionFactory.new(nil,cert) cert.extensions = [ ef.create_extension("basicConstraints","CA:FALSE"), ef.create_extension("subjectKeyIdentifier","hash"), ef.create_extension("extendedKeyUsage","serverAuth"), ef.create_extension("keyUsage","keyEncipherment,dataEncipherment,digitalSignature") ] ef.issuer_certificate = cert cert.add_extension ef.create_extension("authorityKeyIdentifier", "keyid:always,issuer:always") cert.sign(key, OpenSSL::Digest::SHA1.new) end ctx = OpenSSL::SSL::SSLContext.new() ctx.key = key ctx.cert = cert ctx.session_id_context = Rex::Text.rand_text(16) return ctx end |