Class: Rex::Proto::Http::Client

Inherits:
Object
  • Object
show all
Defined in:
lib/rex/proto/http/client.rb

Overview

Acts as a client to an HTTP server, sending requests and receiving responses.

See the RFC: www.w3.org/Protocols/rfc2616/rfc2616.html

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(host, port = 80, context = {}, ssl = nil, ssl_version = nil, proxies = nil, username = '', password = '', kerberos_authenticator: nil, comm: nil, subscriber: nil) ⇒ Client

Creates a new client instance

Parameters:

  • http_trace_proc_request (Proc) —

    A proc object passed to log HTTP requests if HTTP-Trace is set

  • http_trace_proc_response (Proc) —

    A proc object passed to log HTTP responses if HTTP-Trace is set



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# File 'lib/rex/proto/http/client.rb', line 26

def initialize(host, port = 80, context = {}, ssl = nil, ssl_version = nil, proxies = nil, username = '', password = '', kerberos_authenticator: nil, comm: nil, subscriber: nil)
  self.hostname = host
  self.port     = port.to_i
  self.context  = context
  self.ssl      = ssl
  self.ssl_version = ssl_version
  self.proxies  = proxies
  self.username = username
  self.password = password
  self.kerberos_authenticator = kerberos_authenticator
  self.comm = comm
  self.subscriber = subscriber || HttpSubscriber.new
  
  # Take ClientRequest's defaults, but override with our own
  self.config = Http::ClientRequest::DefaultConfig.merge({
    'read_max_data'   => (1024*1024*1),
    'vhost'           => self.hostname,
    'ssl_server_name_indication' => self.hostname,
  })
  self.config['agent'] ||= Rex::UserAgent.session_agent

  # XXX: This info should all be controlled by ClientRequest
  self.config_types = {
    'uri_encode_mode'        => ['hex-normal', 'hex-all', 'hex-random', 'hex-noslashes', 'u-normal', 'u-random', 'u-all'],
    'uri_encode_count'       => 'integer',
    'uri_full_url'           => 'bool',
    'pad_method_uri_count'   => 'integer',
    'pad_uri_version_count'  => 'integer',
    'pad_method_uri_type'    => ['space', 'tab', 'apache'],
    'pad_uri_version_type'   => ['space', 'tab', 'apache'],
    'method_random_valid'    => 'bool',
    'method_random_invalid'  => 'bool',
    'method_random_case'     => 'bool',
    'version_random_valid'   => 'bool',
    'version_random_invalid' => 'bool',
    'uri_dir_self_reference' => 'bool',
    'uri_dir_fake_relative'  => 'bool',
    'uri_use_backslashes'    => 'bool',
    'pad_fake_headers'       => 'bool',
    'pad_fake_headers_count' => 'integer',
    'pad_get_params'         => 'bool',
    'pad_get_params_count'   => 'integer',
    'pad_post_params'        => 'bool',
    'pad_post_params_count'  => 'integer',
    'shuffle_get_params'     => 'bool',
    'shuffle_post_params'    => 'bool',
    'uri_fake_end'           => 'bool',
    'uri_fake_params_start'  => 'bool',
    'header_folding'         => 'bool',
    'chunked_size'           => 'integer',
    'partial'                => 'bool'
  }
end

Instance Attribute Details

#comm ⇒ Object

An optional comm to use for creating the underlying socket.



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# File 'lib/rex/proto/http/client.rb', line 760

def comm
  @comm
end

#config ⇒ Object

The client request configuration



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# File 'lib/rex/proto/http/client.rb', line 764

def config
  @config
end

#config_types ⇒ Object

The client request configuration classes



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# File 'lib/rex/proto/http/client.rb', line 768

def config_types
  @config_types
end

#conn ⇒ Object

The underlying connection.



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# File 'lib/rex/proto/http/client.rb', line 784

def conn
  @conn
end

#context ⇒ Object

The calling context to pass to the socket



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# File 'lib/rex/proto/http/client.rb', line 788

def context
  @context
end

#hostname ⇒ Object (protected)

:nodoc:



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# File 'lib/rex/proto/http/client.rb', line 808

def hostname
  @hostname
end

#junk_pipeline ⇒ Object

When parsing the request, thunk off the first response from the server, since junk



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# File 'lib/rex/proto/http/client.rb', line 798

def junk_pipeline
  @junk_pipeline
end

#kerberos_authenticator ⇒ Object

Auth



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# File 'lib/rex/proto/http/client.rb', line 795

def kerberos_authenticator
  @kerberos_authenticator
end

#krb_encryptor ⇒ Object (protected)

The established kerberos connection info



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# File 'lib/rex/proto/http/client.rb', line 818

def krb_encryptor
  @krb_encryptor
end

#local_host ⇒ Object

The local host of the client.



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# File 'lib/rex/proto/http/client.rb', line 776

def local_host
  @local_host
end

#local_port ⇒ Object

The local port of the client.



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# File 'lib/rex/proto/http/client.rb', line 780

def local_port
  @local_port
end

#ntlm_client ⇒ Object (protected)

The established NTLM connection info



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# File 'lib/rex/proto/http/client.rb', line 813

def ntlm_client
  @ntlm_client
end

#password ⇒ Object

Auth



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# File 'lib/rex/proto/http/client.rb', line 795

def password
  @password
end

#pipeline ⇒ Object

Whether or not pipelining is in use.



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# File 'lib/rex/proto/http/client.rb', line 772

def pipeline
  @pipeline
end

#port ⇒ Object (protected)

:nodoc:



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# File 'lib/rex/proto/http/client.rb', line 808

def port
  @port
end

#proxies ⇒ Object

The proxy list



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# File 'lib/rex/proto/http/client.rb', line 792

def proxies
  @proxies
end

#ssl ⇒ Object (protected)

https



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# File 'lib/rex/proto/http/client.rb', line 806

def ssl
  @ssl
end

#ssl_version ⇒ Object (protected)

https



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# File 'lib/rex/proto/http/client.rb', line 806

def ssl_version
  @ssl_version
end

#subscriber ⇒ Rex::Proto::Http::HttpSubscriber

Returns The HTTP subscriber.

Returns:



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# File 'lib/rex/proto/http/client.rb', line 801

def subscriber
  @subscriber
end

#username ⇒ Object

Auth



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# File 'lib/rex/proto/http/client.rb', line 795

def username
  @username
end

Instance Method Details

#_send_recv(req, t = -1,, persist = false) ⇒ Response

Transmit an HTTP request and receive the response

If persist is set, then the request will attempt to reuse an existing connection.

Call this directly instead of #send_recv if you don't want automatic authentication handling.

Returns:



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# File 'lib/rex/proto/http/client.rb', line 233

def _send_recv(req, t = -1, persist = false)
  @pipeline = persist
  subscriber.on_request(req)
  if req.respond_to?(:opts) && req.opts['ntlm_transform_request'] && self.ntlm_client
    req = req.opts['ntlm_transform_request'].call(self.ntlm_client, req)
  elsif req.respond_to?(:opts) && req.opts['krb_transform_request'] && self.krb_encryptor
    req = req.opts['krb_transform_request'].call(self.krb_encryptor, req)
  end
  
  send_request(req, t)

  res = read_response(t, :original_request => req)
  if req.respond_to?(:opts) && req.opts['ntlm_transform_response'] && self.ntlm_client
    req.opts['ntlm_transform_response'].call(self.ntlm_client, res)
  elsif req.respond_to?(:opts) && req.opts['krb_transform_response'] && self.krb_encryptor
    req = req.opts['krb_transform_response'].call(self.krb_encryptor, res)
  end
  res.request = req.to_s if res
  res.peerinfo = peerinfo if res
  subscriber.on_response(res)
  res
end

#basic_auth_header(username, password) ⇒ String

Converts username and password into the HTTP Basic authorization string.

Returns:

  • (String) —

    A value suitable for use as an Authorization header



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# File 'lib/rex/proto/http/client.rb', line 340

def basic_auth_header(username,password)
  auth_str = username.to_s + ":" + password.to_s
  auth_str = "Basic " + Rex::Text.encode_base64(auth_str)
end

#channel_binding ⇒ Object 



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# File 'lib/rex/proto/http/client.rb', line 617

def channel_binding
  if !self.conn.respond_to?(:peer_cert) or self.conn.peer_cert.nil?
    nil
  else
    Net::NTLM::ChannelBinding.create(OpenSSL::X509::Certificate.new(self.conn.peer_cert))
  end
end

#close ⇒ Object

Closes the connection to the remote server.



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# File 'lib/rex/proto/http/client.rb', line 198

def close
  if self.conn && !self.conn.closed?
    self.conn.shutdown
    self.conn.close
  end

  self.conn = nil
  self.ntlm_client = nil
end

#conn? ⇒ Boolean

Returns whether or not the conn is valid.

Returns:

  • (Boolean) 


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# File 'lib/rex/proto/http/client.rb', line 730

def conn?
  conn != nil
end

#connect(t = -1)) ⇒ Rex::Socket::Tcp

Connects to the remote server if possible.

Parameters:

  • t (Integer) (defaults to: -1)) —

    Timeout

Returns:

  • (Rex::Socket::Tcp)

See Also:

  • Socket::Tcp.create


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# File 'lib/rex/proto/http/client.rb', line 168

def connect(t = -1)
  # If we already have a connection and we aren't pipelining, close it.
  if (self.conn)
    if !pipelining?
      close
    else
      return self.conn
    end
  end

  timeout = (t.nil? or t == -1) ? 0 : t

  self.conn = Rex::Socket::Tcp.create(
    'PeerHost'    => self.hostname,
    'PeerHostname' => self.config['ssl_server_name_indication'] || self.config['vhost'],
    'PeerPort'   => self.port.to_i,
    'LocalHost'  => self.local_host,
    'LocalPort'  => self.local_port,
    'Context'    => self.context,
    'SSL'        => self.ssl,
    'SSLVersion' => self.ssl_version,
    'Proxies'    => self.proxies,
    'Timeout'    => timeout,
    'Comm'       => self.comm
  )
end

#digest_auth(opts = {}) ⇒ Response

Send a series of requests to complete Digest Authentication

Parameters:

  • opts (Hash) (defaults to: {}) —

    the options used to build an HTTP request

Returns:

  • (Response) —

    the last valid HTTP response we received



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# File 'lib/rex/proto/http/client.rb', line 354

def digest_auth(opts={})
  cnonce = make_cnonce
  nonce_count = 0

  to = opts['timeout'] || 20

  digest_user = opts['username'] || ""
  digest_password =  opts['password'] || ""

  method = opts['method']
  path = opts['uri']
  iis = true
  if (opts['DigestAuthIIS'] == false or self.config['DigestAuthIIS'] == false)
    iis = false
  end

  begin
  nonce_count += 1

  resp = opts['response']

  if not resp
    # Get authentication-challenge from server, and read out parameters required
    r = request_cgi(opts.merge({
        'uri' => path,
        'method' => method }))
    resp = _send_recv(r, to)
    unless resp.kind_of? Rex::Proto::Http::Response
      return nil
    end

    if resp.code != 401
      return resp
    end
    return resp unless resp.headers['WWW-Authenticate']
  end

  # Don't anchor this regex to the beginning of string because header
  # folding makes it appear later when the server presents multiple
  # WWW-Authentication options (such as is the case with IIS configured
  # for Digest or NTLM).
  resp['www-authenticate'] =~ /Digest (.*)/

  parameters = {}
  $1.split(/,[[:space:]]*/).each do |p|
    k, v = p.split("=", 2)
    parameters[k] = v.gsub('"', '')
  end

  qop = parameters['qop']

  if parameters['algorithm'] =~ /(.*?)(-sess)?$/
    algorithm = case $1
    when 'MD5' then Digest::MD5
    when 'SHA1' then Digest::SHA1
    when 'SHA2' then Digest::SHA2
    when 'SHA256' then Digest::SHA256
    when 'SHA384' then Digest::SHA384
    when 'SHA512' then Digest::SHA512
    when 'RMD160' then Digest::RMD160
    else raise Error, "unknown algorithm \"#{$1}\""
    end
    algstr = parameters["algorithm"]
    sess = $2
  else
    algorithm = Digest::MD5
    algstr = "MD5"
    sess = false
  end

  a1 = if sess then
    [
      algorithm.hexdigest("#{digest_user}:#{parameters['realm']}:#{digest_password}"),
      parameters['nonce'],
      cnonce
    ].join ':'
  else
    "#{digest_user}:#{parameters['realm']}:#{digest_password}"
  end

  ha1 = algorithm.hexdigest(a1)
  ha2 = algorithm.hexdigest("#{method}:#{path}")

  request_digest = [ha1, parameters['nonce']]
  request_digest.push(('%08x' % nonce_count), cnonce, qop) if qop
  request_digest << ha2
  request_digest = request_digest.join ':'

  # Same order as IE7
  auth = [
    "Digest username=\"#{digest_user}\"",
    "realm=\"#{parameters['realm']}\"",
    "nonce=\"#{parameters['nonce']}\"",
    "uri=\"#{path}\"",
    "cnonce=\"#{cnonce}\"",
    "nc=#{'%08x' % nonce_count}",
    "algorithm=#{algstr}",
    "response=\"#{algorithm.hexdigest(request_digest)[0, 32]}\"",
    # The spec says the qop value shouldn't be enclosed in quotes, but
    # some versions of IIS require it and Apache accepts it.  Chrome
    # and Firefox both send it without quotes but IE does it this way.
    # Use the non-compliant-but-everybody-does-it to be as compatible
    # as possible by default.  The user can override if they don't like
    # it.
    if qop.nil? then
    elsif iis then
      "qop=\"#{qop}\""
    else
      "qop=#{qop}"
    end,
    if parameters.key? 'opaque' then
      "opaque=\"#{parameters['opaque']}\""
    end
  ].compact

  headers ={ 'Authorization' => auth.join(', ') }
  headers.merge!(opts['headers']) if opts['headers']

  # Send main request with authentication
  r = request_cgi(opts.merge({
    'uri' => path,
    'method' => method,
    'headers' => headers }))
  resp = _send_recv(r, to, true)
  unless resp.kind_of? Rex::Proto::Http::Response
    return nil
  end

  return resp

  rescue ::Errno::EPIPE, ::Timeout::Error
  end
end

#kerberos_auth(opts = {}) ⇒ Object 



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# File 'lib/rex/proto/http/client.rb', line 488

def kerberos_auth(opts={})
  to = opts['timeout'] || 20
  auth_result = self.kerberos_authenticator.authenticate(mechanism: Rex::Proto::Gss::Mechanism::KERBEROS)
  gss_data = auth_result[:security_blob]
  gss_data_b64 = Rex::Text.encode_base64(gss_data)

  # Separate options for the auth requests
  auth_opts = opts.clone
  auth_opts['headers'] = opts['headers'].clone
  auth_opts['headers']['Authorization'] = "Kerberos #{gss_data_b64}"

  if auth_opts['no_body_for_auth']
    auth_opts.delete('data')
    auth_opts.delete('krb_transform_request')
    auth_opts.delete('krb_transform_response')
  end

  begin
    # Send the auth request
    r = request_cgi(auth_opts)
    resp = _send_recv(r, to)
    unless resp.kind_of? Rex::Proto::Http::Response
      return nil
    end

    # Get the challenge and craft the response
    response = resp.headers['WWW-Authenticate'].scan(/Kerberos ([A-Z0-9\x2b\x2f=]+)/ni).flatten[0]
    return resp unless response

    decoded = Rex::Text.decode_base64(response)
    mutual_auth_result = self.kerberos_authenticator.parse_gss_init_response(decoded, auth_result[:session_key], mechanism: 'kerberos')
    self.krb_encryptor = self.kerberos_authenticator.get_message_encryptor(mutual_auth_result[:ap_rep_subkey], 
                                                                                auth_result[:client_sequence_number],
                                                                                mutual_auth_result[:server_sequence_number])

    if opts['no_body_for_auth']
      # If the body wasn't sent in the authentication, now do the actual request
      r = request_cgi(opts)
      resp = _send_recv(r, to, true)
    end
    return resp

  rescue ::Errno::EPIPE, ::Timeout::Error
    return nil
  end
end

#make_cnonce ⇒ Object 



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# File 'lib/rex/proto/http/client.rb', line 346

def make_cnonce
  Digest::MD5.hexdigest "%x" % (::Time.now.to_i + rand(65535))
end

#negotiate_auth(opts = {}) ⇒ Response

Builds a series of requests to complete Negotiate Auth. Works essentially the same way as Digest auth. Same pipelining concerns exist.

Parameters:

  • opts (Hash) (defaults to: {}) —

    a customizable set of options

Options Hash (opts):

  • provider ("Negotiate", "NTLM") —

    What Negotiate provider to use

Returns:

  • (Response) —

    the last valid HTTP response we received



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# File 'lib/rex/proto/http/client.rb', line 543

def negotiate_auth(opts={})

  to = opts['timeout'] || 20
  opts['username'] ||= ''
  opts['password'] ||= ''

  if opts['provider'] and opts['provider'].include? 'Negotiate'
    provider = "Negotiate "
  else
    provider = "NTLM "
  end

  opts['method']||= 'GET'
  opts['headers']||= {}

  workstation_name = Rex::Text.rand_text_alpha(rand(8)+6)
  domain_name = self.config['domain']

  ntlm_client = ::Net::NTLM::Client.new(
    opts['username'],
    opts['password'],
    workstation: workstation_name,
    domain: domain_name,
  )
  type1 = ntlm_client.init_context

  begin
    # Separate options for the auth requests
    auth_opts = opts.clone
    auth_opts['headers'] = opts['headers'].clone
    auth_opts['headers']['Authorization'] = provider + type1.encode64

    if auth_opts['no_body_for_auth']
      auth_opts.delete('data')
      auth_opts.delete('ntlm_transform_request')
      auth_opts.delete('ntlm_transform_response')
    end

    # First request to get the challenge
    r = request_cgi(auth_opts)
    resp = _send_recv(r, to)
    unless resp.kind_of? Rex::Proto::Http::Response
      return nil
    end

    return resp unless resp.code == 401 && resp.headers['WWW-Authenticate']

    # Get the challenge and craft the response
    ntlm_challenge = resp.headers['WWW-Authenticate'].scan(/#{provider}([A-Z0-9\x2b\x2f=]+)/ni).flatten[0]
    return resp unless ntlm_challenge

    ntlm_message_3 = ntlm_client.init_context(ntlm_challenge, channel_binding)

    self.ntlm_client = ntlm_client
    # Send the response
    auth_opts['headers']['Authorization'] = "#{provider}#{ntlm_message_3.encode64}"
    r = request_cgi(auth_opts)
    resp = _send_recv(r, to, true)

    unless resp.kind_of? Rex::Proto::Http::Response
      return nil
    end
    if opts['no_body_for_auth']
      # If the body wasn't sent in the authentication, now do the actual request
      r = request_cgi(opts)
      resp = _send_recv(r, to, true)
    end
    return resp

  rescue ::Errno::EPIPE, ::Timeout::Error
    return nil
  end
end

#peerinfo ⇒ Object

Target host addr and port for this connection



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# File 'lib/rex/proto/http/client.rb', line 744

def peerinfo
  if self.conn
    pi = self.conn.peerinfo || nil
    if pi
      return {
        'addr' => pi.split(':')[0],
        'port' => pi.split(':')[1].to_i
      }
    end
  end
  nil
end

#pipelining? ⇒ Boolean

Whether or not connections should be pipelined.

Returns:

  • (Boolean) 


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# File 'lib/rex/proto/http/client.rb', line 737

def pipelining?
  pipeline
end

#read_response(t = -1,, opts = {}) ⇒ Response

Read a response from the server

Wait at most t seconds for the full response to be read in. If t is specified as a negative value, it indicates an indefinite wait cycle. If t is specified as nil or 0, it indicates no response parsing is required.

Returns:



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# File 'lib/rex/proto/http/client.rb', line 632

def read_response(t = -1, opts = {})
  # Return a nil response if timeout is nil or 0
  return if t.nil? || t == 0

  resp = Response.new
  resp.max_data = config['read_max_data']

  original_request = opts.fetch(:original_request) { nil }
  parse_opts = {}
  unless original_request.nil?
    parse_opts = { :orig_method => original_request.opts['method'] }
  end

  Timeout.timeout((t < 0) ? nil : t) do

    rv = nil
    while (
             not conn.closed? and
             rv != Packet::ParseCode::Completed and
             rv != Packet::ParseCode::Error
            )

      begin

        buff = conn.get_once(resp.max_data, 1)
        rv   = resp.parse(buff || '', parse_opts)

      # Handle unexpected disconnects
      rescue ::Errno::EPIPE, ::EOFError, ::IOError
        case resp.state
        when Packet::ParseState::ProcessingHeader
          resp = nil
        when Packet::ParseState::ProcessingBody
          # truncated request, good enough
          resp.error = :truncated
        end
        break
      end

      # This is a dirty hack for broken HTTP servers
      if rv == Packet::ParseCode::Completed
        rbody = resp.body
        rbufq = resp.bufq

        rblob = rbody.to_s + rbufq.to_s
        tries = 0
        begin
          # XXX: This doesn't deal with chunked encoding
          while tries < 1000 and resp.headers["Content-Type"] and resp.headers["Content-Type"].start_with?('text/html') and rblob !~ /<\/html>/i
            buff = conn.get_once(-1, 0.05)
            break if not buff
            rblob += buff
            tries += 1
          end
        rescue ::Errno::EPIPE, ::EOFError, ::IOError
        end

        resp.bufq = ""
        resp.body = rblob
      end
    end
  end

  return resp if not resp

  # As a last minute hack, we check to see if we're dealing with a 100 Continue here.
  # Most of the time this is handled by the parser via check_100()
  if resp.proto == '1.1' and resp.code == 100 and not opts[:skip_100]
    # Read the real response from the body if we found one
    # If so, our real response became the body, so we re-parse it.
    if resp.body.to_s =~ /^HTTP/
      body = resp.body
      resp = Response.new
      resp.max_data = config['read_max_data']
      rv = resp.parse(body, parse_opts)
    # We found a 100 Continue but didn't read the real reply yet
    # Otherwise reread the reply, but don't try this hack again
    else
      resp = read_response(t, :skip_100 => true)
    end
  end

  resp
rescue Timeout::Error
  # Allow partial response due to timeout
  resp if config['partial']
end

#request_cgi(opts = {}) ⇒ ClientRequest

Create a CGI compatible request

Parameters:

  • opts (Hash) (defaults to: {})

Options Hash (opts):

  • Content-Type ('ctype'String) —

    header value, default for POST requests: application/x-www-form-urlencoded

  • URI ('encode_params'Bool) —

    encode the GET or POST variables (names and values), default: true

  • GET ('vars_get'Hash) —

    variables as a hash to be translated into a query string

  • POST ('vars_post'Hash) —

    variables as a hash to be translated into POST data

  • POST ('vars_form_data'Hash) —

    form_data variables as a hash to be translated into multi-part POST form data

  • User-Agent ('agent'String) —

    header value

  • Connection ('connection'String) —

    header value

  • Cookie ('cookie'String) —

    header value

  • HTTP ('data'String) —

    data (only useful with some methods, see rfc2616)

  • URI ('encode'Bool) —

    encode the supplied URI, default: false

  • HTTP ('headers'Hash) —

    headers, e.g. { "X-MyHeader" => "value" }

  • HTTP ('method'String) —

    method to use in the request, not limited to standard methods defined by rfc2616, default: GET

  • protocol, ('proto'String) —

    default: HTTP

  • raw ('query'String) —

    query string

  • Raw ('raw_headers'String) —

    HTTP headers

  • the ('uri'String) —

    URI to request

  • version ('version'String) —

    of the protocol, default: 1.1

  • Host ('vhost'String) —

    header value

Returns:



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# File 'lib/rex/proto/http/client.rb', line 152

def request_cgi(opts = {})
  opts = self.config.merge(opts)

  opts['cgi'] = true
  opts['port'] = self.port
  opts['ssl'] = self.ssl

  ClientRequest.new(opts)
end

#request_raw(opts = {}) ⇒ ClientRequest

Create an arbitrary HTTP request

Parameters:

  • opts (Hash) (defaults to: {})

Options Hash (opts):

  • User-Agent ('agent'String) —

    header value

  • Connection ('connection'String) —

    header value

  • Cookie ('cookie'String) —

    header value

  • HTTP ('data'String) —

    data (only useful with some methods, see rfc2616)

  • URI ('encode'Bool) —

    encode the supplied URI, default: false

  • HTTP ('headers'Hash) —

    headers, e.g. { "X-MyHeader" => "value" }

  • HTTP ('method'String) —

    method to use in the request, not limited to standard methods defined by rfc2616, default: GET

  • protocol, ('proto'String) —

    default: HTTP

  • raw ('query'String) —

    query string

  • Raw ('raw_headers'String) —

    HTTP headers

  • the ('uri'String) —

    URI to request

  • version ('version'String) —

    of the protocol, default: 1.1

  • Host ('vhost'String) —

    header value

Returns:



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# File 'lib/rex/proto/http/client.rb', line 130

def request_raw(opts = {})
  opts = self.config.merge(opts)

  opts['cgi'] = false
  opts['port'] = self.port
  opts['ssl'] = self.ssl

  ClientRequest.new(opts)
end

#send_auth(res, opts, t, persist) ⇒ Response

Resends an HTTP Request with the propper authentcation headers set. If we do not support the authentication type the server requires we return the original response object

Parameters:

  • res (Response) —

    the HTTP Response object

  • opts (Hash) —

    the options used to generate the original HTTP request

  • t (Integer) —

    the timeout for the request in seconds

  • persist (Boolean) —

    whether or not to persist the TCP connection (pipelining)

Returns:

  • (Response) —

    the last valid HTTP response object we received



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# File 'lib/rex/proto/http/client.rb', line 278

def send_auth(res, opts, t, persist)
  if opts['username'].nil? or opts['username'] == ''
    if self.username and not (self.username == '')
      opts['username'] = self.username
      opts['password'] = self.password
    else
      opts['username'] = nil
      opts['password'] = nil
    end
  end

  if opts[:kerberos_authenticator].nil?
    opts[:kerberos_authenticator] = self.kerberos_authenticator
  end

  return res if (opts['username'].nil? or opts['username'] == '') and opts[:kerberos_authenticator].nil?
  supported_auths = res.headers['WWW-Authenticate']

  # if several providers are available, the client may want one in particular
  preferred_auth = opts['preferred_auth']

  if supported_auths.include?('Basic') && (preferred_auth.nil? || preferred_auth == 'Basic')
    opts['headers'] ||= {}
    opts['headers']['Authorization'] = basic_auth_header(opts['username'],opts['password'] )
    req = request_cgi(opts)
    res = _send_recv(req,t,persist)
    return res
  elsif supported_auths.include?('Digest') && (preferred_auth.nil? || preferred_auth == 'Digest')
    temp_response = digest_auth(opts)
    if temp_response.kind_of? Rex::Proto::Http::Response
      res = temp_response
    end
    return res
  elsif supported_auths.include?('NTLM') && (preferred_auth.nil? || preferred_auth == 'NTLM')
    opts['provider'] = 'NTLM'
    temp_response = negotiate_auth(opts)
    if temp_response.kind_of? Rex::Proto::Http::Response
      res = temp_response
    end
    return res
  elsif supported_auths.include?('Negotiate') && (preferred_auth.nil? || preferred_auth == 'Negotiate')
    opts['provider'] = 'Negotiate'
    temp_response = negotiate_auth(opts)
    if temp_response.kind_of? Rex::Proto::Http::Response
      res = temp_response
    end
    return res
  elsif supported_auths.include?('Negotiate') && (preferred_auth.nil? || preferred_auth == 'Kerberos')
    opts['provider'] = 'Negotiate'
    temp_response = kerberos_auth(opts)
    if temp_response.kind_of? Rex::Proto::Http::Response
      res = temp_response
    end
    return res
  end
  return res
end

#send_recv(req, t = -1,, persist = false) ⇒ Response

Sends a request and gets a response back

If the request is a 401, and we have creds, it will attempt to complete authentication and return the final response

Returns:



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# File 'lib/rex/proto/http/client.rb', line 215

def send_recv(req, t = -1, persist = false)
  res = _send_recv(req, t, persist)
  if res and res.code == 401 and res.headers['WWW-Authenticate']
    res = send_auth(res, req.opts, t, persist)
  end
  res
end

#send_request(req, t = -1)) ⇒ void

This method returns an undefined value.

Send an HTTP request to the server

Parameters:

  • req (Request, ClientRequest, #to_s) —

    The request to send

  • t (Integer) (defaults to: -1)) —

    Timeout



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# File 'lib/rex/proto/http/client.rb', line 263

def send_request(req, t = -1)
  connect(t)
  conn.put(req.to_s)
end

#set_config(opts = {}) ⇒ Object

Set configuration options



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# File 'lib/rex/proto/http/client.rb', line 83

def set_config(opts = {})
  opts.each_pair do |var,val|
    # Default type is string
    typ = self.config_types[var] || 'string'

    # These are enum types
    if typ.is_a?(Array)
      if not typ.include?(val)
        raise RuntimeError, "The specified value for #{var} is not one of the valid choices"
      end
    end

    # The caller should have converted these to proper ruby types, but
    # take care of the case where they didn't before setting the
    # config.

    if(typ == 'bool')
      val = (val == true || val.to_s =~ /^(t|y|1)/i)
    end

    if(typ == 'integer')
      val = val.to_i
    end

    self.config[var]=val
  end
end

#stop ⇒ Object

Cleans up any outstanding connections and other resources.



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# File 'lib/rex/proto/http/client.rb', line 723

def stop
  close
end