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-rw-r--r--lib/drb/ssl.rb156
1 files changed, 148 insertions, 8 deletions
diff --git a/lib/drb/ssl.rb b/lib/drb/ssl.rb
index c0dd9c49f4a..86517027970 100644
--- a/lib/drb/ssl.rb
+++ b/lib/drb/ssl.rb
@@ -11,9 +11,18 @@ module DRb
# <code>drbssl://<host>:<port>?<option></code>. The option is optional
class DRbSSLSocket < DRbTCPSocket
- # :stopdoc:
+ # SSLConfig handles the needed SSL information for establishing a
+ # DRbSSLSocket connection, including generating the X509 / RSA pair.
+ #
+ # An instance of this config can be passed to DRbSSLSocket.new,
+ # DRbSSLSocket.open and DRbSSLSocket.open_server
+ #
+ # See DRb::DRbSSLSocket::SSLConfig.new for more details
class SSLConfig
+ # Default values for a SSLConfig instance.
+ #
+ # See DRb::DRbSSLSocket::SSLConfig.new for more details
DEFAULT = {
:SSLCertificate => nil,
:SSLPrivateKey => nil,
@@ -30,6 +39,90 @@ module DRb
:SSLCertComment => "Generated by Ruby/OpenSSL"
}
+ # Create a new DRb::DRbSSLSocket::SSLConfig instance
+ #
+ # The DRb::DRbSSLSocket will take either a +config+ Hash or an instance
+ # of SSLConfg, and will setup the certificate for its session for the
+ # configuration. If want it to generate a generic certificate, the bare
+ # minimum is to provide the :SSLCertName
+ #
+ # === Config options
+ #
+ # From +config+ Hash:
+ #
+ # :SSLCertificate ::
+ # An instance of OpenSSL::X509::Certificate. If this is not provided,
+ # then a generic X509 is generated, with a correspond :SSLPrivateKey
+ #
+ # :SSLPrivateKey ::
+ # A private key instance, like OpenSSL::PKey::RSA. This key must be
+ # the key that signed the :SSLCertificate
+ #
+ # :SSLClientCA ::
+ # An OpenSSL::X509::Certificate, or Array of certificates that will
+ # used as ClientCAs in the SSL Context
+ #
+ # :SSLCACertificatePath ::
+ # A path to the directory of CA certificates. The certificates must
+ # be in PEM format.
+ #
+ # :SSLCACertificateFile ::
+ # A path to a CA certificate file, in PEM format.
+ #
+ # :SSLTmpDhCallback ::
+ # A DH callback. See OpenSSL::SSL::SSLContext.tmp_dh_callback
+ #
+ # :SSLVerifyMode ::
+ # This is the SSL verification mode. See OpenSSL::SSL::VERIFY_* for
+ # available modes. The default is OpenSSL::SSL::VERIFY_NONE
+ #
+ # :SSLVerifyDepth ::
+ # Number of CA certificates to walk, when verifying a certificate
+ # chain.
+ #
+ # :SSLVerifyCallback ::
+ # A callback to be used for additional verification. See
+ # OpenSSL::SSL::SSLContext.verify_callback
+ #
+ # :SSLCertificateStore ::
+ # A OpenSSL::X509::Store used for verification of certificates
+ #
+ # :SSLCertName ::
+ # Issuer name for the certificate. This is required when generating
+ # the certificate (if :SSLCertificate and :SSLPrivateKey were not
+ # given). The value of this is to be an Array of pairs:
+ #
+ # [["C", "Raleigh"], ["ST","North Carolina"],
+ # ["CN","fqdn.example.com"]]
+ #
+ # See also OpenSSL::X509::Name
+ #
+ # :SSLCertComment ::
+ # A comment to be used for generating the certificate. The default is
+ # "Generated by Ruby/OpenSSL"
+ #
+ #
+ # === Example
+ #
+ # These values can be added after the fact, like a Hash.
+ #
+ # require 'drb/ssl'
+ # c = DRb::DRbSSLSocket::SSLConfig.new {}
+ # c[:SSLCertificate] =
+ # OpenSSL::X509::Certificate.new(File.read('mycert.crt'))
+ # c[:SSLPrivateKey] = OpenSSL::PKey::RSA.new(File.read('mycert.key'))
+ # c[:SSLVerifyMode] = OpenSSL::SSL::VERIFY_PEER
+ # c[:SSLCACertificatePath] = "/etc/ssl/certs/"
+ # c.setup_certificate
+ #
+ # or
+ #
+ # require 'drb/ssl'
+ # c = DRb::DRbSSLSocket::SSLConfig.new({
+ # :SSLCertName => [["CN" => DRb::DRbSSLSocket.getservername]]
+ # })
+ # c.setup_certificate
+ #
def initialize(config)
@config = config
@cert = config[:SSLCertificate]
@@ -37,10 +130,13 @@ module DRb
@ssl_ctx = nil
end
+ # A convenience method to access the values like a Hash
def [](key);
@config[key] || DEFAULT[key]
end
+ # Connect to IO +tcp+, with context of the current certificate
+ # configuration
def connect(tcp)
ssl = ::OpenSSL::SSL::SSLSocket.new(tcp, @ssl_ctx)
ssl.sync = true
@@ -48,6 +144,8 @@ module DRb
ssl
end
+ # Accept connection to IO +tcp+, with context of the current certificate
+ # configuration
def accept(tcp)
ssl = OpenSSL::SSL::SSLSocket.new(tcp, @ssl_ctx)
ssl.sync = true
@@ -55,6 +153,9 @@ module DRb
ssl
end
+ # Ensures that :SSLCertificate and :SSLPrivateKey have been provided
+ # or that a new certificate is generated with the other parameters
+ # provided.
def setup_certificate
if @cert && @pkey
return
@@ -100,6 +201,8 @@ module DRb
@pkey = rsa
end
+ # Establish the OpenSSL::SSL::SSLContext with the configuration
+ # parameters provided.
def setup_ssl_context
ctx = ::OpenSSL::SSL::SSLContext.new
ctx.cert = @cert
@@ -116,7 +219,12 @@ module DRb
end
end
- def self.parse_uri(uri)
+ # Parse the dRuby +uri+ for an SSL connection.
+ #
+ # Expects drbssl://...
+ #
+ # Raises DRbBadScheme or DRbBadURI if +uri+ is not matching or malformed
+ def self.parse_uri(uri) # :nodoc:
if uri =~ /^drbssl:\/\/(.*?):(\d+)(\?(.*))?$/
host = $1
port = $2.to_i
@@ -128,6 +236,15 @@ module DRb
end
end
+ # Return an DRb::DRbSSLSocket instance as a client-side connection,
+ # with the SSL connected. This is called from DRb::start_service or while
+ # connecting to a remote object:
+ #
+ # DRb.start_service 'drbssl://localhost:0', front, config
+ #
+ # +uri+ is the URI we are connected to,
+ # <code>'drbssl://localhost:0'</code> above, +config+ is our
+ # configuration. Either a Hash or DRb::DRbSSLSocket::SSLConfig
def self.open(uri, config)
host, port, = parse_uri(uri)
host.untaint
@@ -139,6 +256,15 @@ module DRb
self.new(uri, ssl, ssl_conf, true)
end
+ # Returns a DRb::DRbSSLSocket instance as a server-side connection, with
+ # the SSL connected. This is called from DRb::start_service or while
+ # connecting to a remote object:
+ #
+ # DRb.start_service 'drbssl://localhost:0', front, config
+ #
+ # +uri+ is the URI we are connected to,
+ # <code>'drbssl://localhost:0'</code> above, +config+ is our
+ # configuration. Either a Hash or DRb::DRbSSLSocket::SSLConfig
def self.open_server(uri, config)
uri = 'drbssl://:0' unless uri
host, port, = parse_uri(uri)
@@ -157,19 +283,35 @@ module DRb
self.new(@uri, soc, ssl_conf, false)
end
- def self.uri_option(uri, config)
+ # This is a convenience method to parse +uri+ and separate out any
+ # additional options appended in the +uri+.
+ #
+ # Returns an option-less uri and the option => [uri,option]
+ #
+ # The +config+ is completely unused, so passing nil is sufficient.
+ def self.uri_option(uri, config) # :nodoc:
host, port, option = parse_uri(uri)
return "drbssl://#{host}:#{port}", option
end
+ # Create a DRb::DRbSSLSocket instance.
+ #
+ # +uri+ is the URI we are connected to.
+ # +soc+ is the tcp socket we are bound to.
+ # +config+ is our configuration. Either a Hash or SSLConfig
+ # +is_established+ is a boolean of whether +soc+ is currenly established
+ #
+ # This is called automatically based on the DRb protocol.
def initialize(uri, soc, config, is_established)
@ssl = is_established ? soc : nil
super(uri, soc.to_io, config)
end
- def stream; @ssl; end
+ # Returns the SSL stream
+ def stream; @ssl; end # :nodoc:
- def close
+ # Closes the SSL stream before closing the dRuby connection.
+ def close # :nodoc:
if @ssl
@ssl.close
@ssl = nil
@@ -177,7 +319,7 @@ module DRb
super
end
- def accept
+ def accept # :nodoc:
begin
while true
soc = @socket.accept
@@ -195,8 +337,6 @@ module DRb
retry
end
end
-
- # :stopdoc:
end
DRbProtocol.add_protocol(DRbSSLSocket)