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GitHub Repository: rapid7/metasploit-framework
Path: blob/master/spec/lib/rex/proto/http/client_spec.rb
Views: 1904
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# -*- coding:binary -*-
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# Note: Some of these tests require a failed
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# connection to 127.0.0.1:1. If you have some crazy local
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# firewall that is dropping packets to this, your tests
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# might be slow.
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RSpec.describe Rex::Proto::Http::Client do
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class << self
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# Set a standard excuse that indicates that the method
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# under test needs to be first examined to figure out
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# what's sane and what's not.
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def excuse_lazy(test_method=nil)
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ret = "need to determine pass/fail criteria"
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test_method ? ret << " for #{test_method.inspect}" : ret
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end
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# Complain about not having a "real" connection (can be mocked)
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def excuse_needs_connection
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"need to actually set up an HTTP server to test"
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end
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# Complain about not having a real auth server (can be mocked)
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def excuse_needs_auth
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"need to set up an HTTP authentication challenger"
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end
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end
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let(:ip) { "1.2.3.4" }
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subject(:cli) do
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Rex::Proto::Http::Client.new(ip)
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end
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describe "#set_config" do
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it "should respond to #set_config" do
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expect(cli.set_config).to eq({})
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end
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end
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it "should respond to initialize" do
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expect(cli).to be
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end
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it "should have a set of default instance variables" do
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expect(cli.instance_variable_get(:@hostname)).to eq ip
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expect(cli.instance_variable_get(:@port)).to eq 80
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expect(cli.instance_variable_get(:@context)).to eq({})
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expect(cli.instance_variable_get(:@ssl)).to be_falsey
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expect(cli.instance_variable_get(:@proxies)).to be_nil
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expect(cli.instance_variable_get(:@username)).to be_empty
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expect(cli.instance_variable_get(:@password)).to be_empty
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expect(cli.config).to be_a_kind_of Hash
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end
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it "should produce a raw HTTP request" do
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expect(cli.request_raw).to be_a_kind_of Rex::Proto::Http::ClientRequest
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end
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it "should produce a CGI HTTP request" do
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req = cli.request_cgi
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expect(req).to be_a_kind_of Rex::Proto::Http::ClientRequest
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end
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context "with authorization" do
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subject(:cli) do
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cli = Rex::Proto::Http::Client.new(ip)
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cli.set_config({"authorization" => "Basic base64dstuffhere"})
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cli
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end
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let(:user) { "user" }
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let(:pass) { "pass" }
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let(:base64) { ["user:pass"].pack('m').chomp }
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context "and an Authorization header" do
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before do
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cli.set_config({"headers" => { "Authorization" => "Basic #{base64}" } })
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end
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it "should have one Authorization header" do
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req = cli.request_cgi
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match = req.to_s.match("Authorization: Basic")
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expect(match).to be
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expect(match.length).to eq 1
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end
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it "should prefer the value in the header" do
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req = cli.request_cgi
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match = req.to_s.match(/Authorization: Basic (.*)$/)
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expect(match).to be
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expect(match.captures.length).to eq 1
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expect(match.captures[0].chomp).to eq base64
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end
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end
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end
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context "with credentials" do
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subject(:cli) do
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cli = Rex::Proto::Http::Client.new(ip)
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cli
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end
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let(:first_response) {
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"HTTP/1.1 401 Unauthorized\r\nContent-Length: 0\r\nWWW-Authenticate: Basic realm=\"foo\"\r\n\r\n"
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}
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let(:authed_response) {
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"HTTP/1.1 200 Ok\r\nContent-Length: 0\r\n\r\n"
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}
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let(:user) { "user" }
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let(:pass) { "pass" }
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it "should not send creds on the first request in order to induce a 401" do
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req = subject.request_cgi
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expect(req.to_s).not_to match("Authorization:")
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end
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it "should send creds after receiving a 401" do
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conn = double
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allow(conn).to receive(:put)
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allow(conn).to receive(:peerinfo)
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allow(conn).to receive(:shutdown)
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allow(conn).to receive(:close)
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allow(conn).to receive(:closed?).and_return(false)
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expect(conn).to receive(:get_once).and_return(first_response, authed_response)
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expect(conn).to receive(:put) do |str_request|
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expect(str_request).not_to include("Authorization")
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nil
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end
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expect(conn).to receive(:put) do |str_request|
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expect(str_request).to include("Authorization")
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nil
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end
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expect(cli).to receive(:_send_recv).twice.and_call_original
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allow(Rex::Socket::Tcp).to receive(:create).and_return(conn)
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opts = { "username" => user, "password" => pass}
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req = cli.request_cgi(opts)
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cli.send_recv(req)
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# Make sure it didn't modify the argument
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expect(opts).to eq({ "username" => user, "password" => pass})
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end
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end
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it "should attempt to connect to a server" do
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this_cli = Rex::Proto::Http::Client.new("127.0.0.1", 1)
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expect { this_cli.connect(1) }.to raise_error ::Rex::ConnectionRefused
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end
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it "should be able to close a connection" do
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expect(cli.close).to be_nil
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end
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it "should send a request and receive a response", :skip => excuse_needs_connection do
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end
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it "should send a request and receive a response without auth handling", :skip => excuse_needs_connection do
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end
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it "should send a request", :skip => excuse_needs_connection do
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end
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it "should test for credentials" do
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skip "Should actually respond to :has_creds" do
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expect(cli).not_to have_creds
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this_cli = described_class.new("127.0.0.1", 1, {}, false, nil, nil, "user1", "pass1" )
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expect(this_cli).to have_creds
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end
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end
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it "should send authentication", :skip => excuse_needs_connection
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it "should produce a basic authentication header" do
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u = "user1"
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p = "pass1"
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b64 = ["#{u}:#{p}"].pack("m*").strip
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expect(cli.basic_auth_header("user1","pass1")).to eq "Basic #{b64}"
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end
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it "should perform digest authentication", :skip => excuse_needs_auth do
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end
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it "should perform negotiate authentication", :skip => excuse_needs_auth do
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end
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it "should get a response", :skip => excuse_needs_connection do
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end
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it "should end a connection with a stop" do
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expect(cli.stop).to be_nil
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end
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it "should test if a connection is valid" do
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expect(cli.conn?).to be_falsey
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end
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it "should tell if pipelining is enabled" do
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expect(cli).not_to be_pipelining
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this_cli = Rex::Proto::Http::Client.new("127.0.0.1", 1)
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this_cli.pipeline = true
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expect(this_cli).to be_pipelining
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end
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it "should respond to its various accessors" do
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expect(cli).to respond_to :config
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expect(cli).to respond_to :config_types
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expect(cli).to respond_to :pipeline
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expect(cli).to respond_to :local_host
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expect(cli).to respond_to :local_port
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expect(cli).to respond_to :conn
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expect(cli).to respond_to :context
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expect(cli).to respond_to :proxies
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expect(cli).to respond_to :username
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expect(cli).to respond_to :password
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expect(cli).to respond_to :junk_pipeline
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end
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# Not super sure why these are protected...
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# Me either...
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# Same here...
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it "should refuse access to its protected accessors" do
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expect {cli.ssl}.to raise_error NoMethodError
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expect {cli.ssl_version}.to raise_error NoMethodError
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expect {cli.hostname}.to raise_error NoMethodError
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expect {cli.port}.to raise_error NoMethodError
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end
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context 'with vars_form_data' do
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subject(:cli) do
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cli = Rex::Proto::Http::Client.new(ip)
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cli.config['data'] = ''
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cli.config['method'] = 'POST'
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cli
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end
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let(:file_path) do
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::File.join(::Msf::Config.install_root, 'spec', 'file_fixtures', 'string_list.txt')
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end
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let(:file) do
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::File.open(file_path, 'rb')
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end
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let(:mock_boundary_suffix) do
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'MockBoundary1234'
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end
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before(:each) do
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allow(Rex::Text).to receive(:rand_text_numeric).with(30).and_return(mock_boundary_suffix)
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end
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it 'should not include any form boundary metadata by default' do
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request = cli.request_cgi({ })
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expected = <<~EOF
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POST / HTTP/1.1\r
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Host: #{ip}\r
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User-Agent: #{request.opts['agent']}\r
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Content-Type: application/x-www-form-urlencoded\r
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Content-Length: 0\r
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\r
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EOF
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expect(request.to_s).to eq(expected)
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end
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it 'should parse field name and file object as data' do
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vars_form_data = [
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{ 'name' => 'field1', 'data' => file, 'content_type' => 'text/plain' }
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]
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request = cli.request_cgi({ 'vars_form_data' => vars_form_data })
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# We are gsub'ing here as HttpClient does this gsub to non-binary file data
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file_contents = file.read.gsub("\r", '').gsub("\n", "\r\n")
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expected = <<~EOF
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POST / HTTP/1.1\r
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Host: #{ip}\r
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User-Agent: #{request.opts['agent']}\r
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Content-Type: multipart/form-data; boundary=---------------------------MockBoundary1234\r
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Content-Length: 214\r
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\r
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-----------------------------MockBoundary1234\r
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Content-Disposition: form-data; name="field1"; filename="string_list.txt"\r
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Content-Type: text/plain\r
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\r
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#{file_contents}\r
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-----------------------------MockBoundary1234--\r
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EOF
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expect(request.to_s).to eq(expected)
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end
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it 'should parse field name and binary file object as data' do
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vars_form_data = [
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{ 'name' => 'field1', 'data' => file, 'encoding' => 'binary' }
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]
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request = cli.request_cgi({ 'vars_form_data' => vars_form_data })
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expected = <<~EOF
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POST / HTTP/1.1\r
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Host: #{ip}\r
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User-Agent: #{request.opts['agent']}\r
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Content-Type: multipart/form-data; boundary=---------------------------MockBoundary1234\r
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Content-Length: 221\r
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\r
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-----------------------------MockBoundary1234\r
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Content-Disposition: form-data; name="field1"; filename="string_list.txt"\r
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Content-Transfer-Encoding: binary\r
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\r
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#{file.read}\r
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-----------------------------MockBoundary1234--\r
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EOF
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expect(request.to_s).to eq(expected)
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end
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it 'should parse field name and binary file object as data with filename override' do
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vars_form_data = [
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{ 'name' => 'field1', 'data' => file, 'encoding' => 'binary', 'content_type' => 'text/plain', 'filename' => 'my_file.txt' }
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]
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request = cli.request_cgi({ 'vars_form_data' => vars_form_data })
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expected = <<~EOF
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POST / HTTP/1.1\r
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Host: #{ip}\r
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User-Agent: #{request.opts['agent']}\r
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Content-Type: multipart/form-data; boundary=---------------------------MockBoundary1234\r
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Content-Length: 243\r
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\r
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-----------------------------MockBoundary1234\r
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Content-Disposition: form-data; name="field1"; filename="my_file.txt"\r
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Content-Type: text/plain\r
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Content-Transfer-Encoding: binary\r
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\r
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#{file.read}\r
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-----------------------------MockBoundary1234--\r
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EOF
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expect(request.to_s).to eq(expected)
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end
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it 'should parse data correctly when provided with a string' do
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data = 'hello world'
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vars_form_data = [
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{ 'name' => 'file1', 'data' => data, 'filename' => 'file1' }
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]
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request = cli.request_cgi({ 'vars_form_data' => vars_form_data })
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expected = <<~EOF
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POST / HTTP/1.1\r
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Host: #{ip}\r
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User-Agent: #{request.opts['agent']}\r
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Content-Type: multipart/form-data; boundary=---------------------------MockBoundary1234\r
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Content-Length: 175\r
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\r
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-----------------------------MockBoundary1234\r
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Content-Disposition: form-data; name="file1"; filename="file1"\r
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\r
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#{data}\r
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-----------------------------MockBoundary1234--\r
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EOF
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expect(request.to_s).to eq(expected)
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end
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it 'should parse data correctly when provided with a string and content type' do
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data = 'hello world'
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vars_form_data = [
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{ 'name' => 'file1', 'data' => data, 'filename' => 'file1', 'content_type' => 'text/plain' }
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]
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request = cli.request_cgi({ 'vars_form_data' => vars_form_data })
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expected = <<~EOF
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POST / HTTP/1.1\r
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Host: #{ip}\r
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User-Agent: #{request.opts['agent']}\r
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Content-Type: multipart/form-data; boundary=---------------------------MockBoundary1234\r
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Content-Length: 201\r
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\r
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-----------------------------MockBoundary1234\r
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Content-Disposition: form-data; name="file1"; filename="file1"\r
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Content-Type: text/plain\r
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\r
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#{data}\r
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-----------------------------MockBoundary1234--\r
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EOF
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expect(request.to_s).to eq(expected)
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end
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it 'should parse data correctly when provided with a string, content type and filename' do
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data = 'hello world'
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vars_form_data = [
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{ 'name' => 'file1', 'data' => data, 'content_type' => 'text/plain', 'filename' => 'my_file.txt' }
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]
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request = cli.request_cgi({ 'vars_form_data' => vars_form_data })
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expected = <<~EOF
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POST / HTTP/1.1\r
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Host: #{ip}\r
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User-Agent: #{request.opts['agent']}\r
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Content-Type: multipart/form-data; boundary=---------------------------MockBoundary1234\r
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Content-Length: 207\r
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\r
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-----------------------------MockBoundary1234\r
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Content-Disposition: form-data; name="file1"; filename="my_file.txt"\r
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Content-Type: text/plain\r
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\r
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#{data}\r
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-----------------------------MockBoundary1234--\r
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EOF
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expect(request.to_s).to eq(expected)
401
end
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it 'should parse data correctly when provided with a number' do
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data = 123
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vars_form_data = [
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{ 'name' => 'file1', 'data' => data, 'content_type' => 'text/plain' }
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]
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request = cli.request_cgi({ 'vars_form_data' => vars_form_data })
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expected = <<~EOF
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POST / HTTP/1.1\r
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Host: #{ip}\r
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User-Agent: #{request.opts['agent']}\r
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Content-Type: multipart/form-data; boundary=---------------------------MockBoundary1234\r
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Content-Length: 175\r
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\r
415
-----------------------------MockBoundary1234\r
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Content-Disposition: form-data; name="file1"\r
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Content-Type: text/plain\r
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\r
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#{data}\r
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-----------------------------MockBoundary1234--\r
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EOF
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expect(request.to_s).to eq(expected)
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end
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it 'should parse dat correctly when provided with an IO object' do
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require 'stringio'
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str = 'Hello World!'
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vars_form_data = [
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{ 'name' => 'file1', 'data' => ::StringIO.new(str), 'content_type' => 'text/plain', 'filename' => 'my_file.txt' }
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]
430
request = cli.request_cgi({ 'vars_form_data' => vars_form_data })
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expected = <<~EOF
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POST / HTTP/1.1\r
433
Host: #{ip}\r
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User-Agent: #{request.opts['agent']}\r
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Content-Type: multipart/form-data; boundary=---------------------------MockBoundary1234\r
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Content-Length: 208\r
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\r
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-----------------------------MockBoundary1234\r
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Content-Disposition: form-data; name="file1"; filename="my_file.txt"\r
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Content-Type: text/plain\r
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\r
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#{str}\r
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-----------------------------MockBoundary1234--\r
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EOF
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expect(request.to_s).to eq(expected)
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end
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it 'should handle nil data values correctly' do
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vars_form_data = [
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{ 'name' => 'nil_value', 'data' => nil }
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]
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request = cli.request_cgi({ 'vars_form_data' => vars_form_data })
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# This could potentially return one less '\r'.
453
expected = <<~EOF
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POST / HTTP/1.1\r
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Host: #{ip}\r
456
User-Agent: #{request.opts['agent']}\r
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Content-Type: multipart/form-data; boundary=---------------------------MockBoundary1234\r
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Content-Length: 150\r
459
\r
460
-----------------------------MockBoundary1234\r
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Content-Disposition: form-data; name="nil_value"\r
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\r
463
\r
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-----------------------------MockBoundary1234--\r
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EOF
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expect(request.to_s).to eq(expected)
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end
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it 'should handle nil field values correctly' do
469
vars_form_data = [
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{ 'name' => nil, 'data' => '123' },
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{ 'data' => '456' },
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]
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request = cli.request_cgi({ 'vars_form_data' => vars_form_data })
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expected = <<~EOF
475
POST / HTTP/1.1\r
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Host: #{ip}\r
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User-Agent: #{request.opts['agent']}\r
478
Content-Type: multipart/form-data; boundary=---------------------------MockBoundary1234\r
479
Content-Length: 221\r
480
\r
481
-----------------------------MockBoundary1234\r
482
Content-Disposition: form-data\r
483
\r
484
123\r
485
-----------------------------MockBoundary1234\r
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Content-Disposition: form-data\r
487
\r
488
456\r
489
-----------------------------MockBoundary1234--\r
490
EOF
491
expect(request.to_s).to eq(expected)
492
end
493
it 'should handle nil field values and data correctly' do
494
vars_form_data = [
495
{ 'name' => nil, 'data' => nil }
496
]
497
request = cli.request_cgi({ 'vars_form_data' => vars_form_data })
498
expected = <<~EOF
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POST / HTTP/1.1\r
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Host: #{ip}\r
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User-Agent: #{request.opts['agent']}\r
502
Content-Type: multipart/form-data; boundary=---------------------------MockBoundary1234\r
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Content-Length: 132\r
504
\r
505
-----------------------------MockBoundary1234\r
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Content-Disposition: form-data\r
507
\r
508
\r
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-----------------------------MockBoundary1234--\r
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EOF
511
expect(request.to_s).to eq(expected)
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end
513
it 'should raise an error on non-string field names' do
514
invalid_names = [
515
false,
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true,
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123,
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['hello'],
519
{ k: 'val' }
520
]
521
invalid_names.each do |name|
522
vars_form_data = [
523
{ 'name' => name, 'data' => '123' }
524
]
525
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request = cli.request_cgi({ 'vars_form_data' => vars_form_data })
527
expect { request.to_s }.to raise_error /The provided field `name` option is not valid. Expected: String/
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end
529
end
530
531
it 'should handle binary correctly' do
532
binary_data = (0..255).map { |x| x.chr }.join
533
vars_form_data = [
534
{ 'name' => 'field1', 'data' => binary_data, 'encoding' => 'binary' }
535
]
536
request = cli.request_cgi({ 'vars_form_data' => vars_form_data })
537
expected = <<~EOF
538
POST / HTTP/1.1\r
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Host: #{ip}\r
540
User-Agent: #{request.opts['agent']}\r
541
Content-Type: multipart/form-data; boundary=---------------------------MockBoundary1234\r
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Content-Length: 438\r
543
\r
544
-----------------------------MockBoundary1234\r
545
Content-Disposition: form-data; name="field1"\r
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Content-Transfer-Encoding: binary\r
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\r
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#{binary_data}\r
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-----------------------------MockBoundary1234--\r
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EOF
551
expect(request.to_s).to eq(expected)
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end
553
it 'should handle duplicate file and field names correctly' do
554
vars_form_data = [
555
{ 'name' => 'file', 'data' => 'file1_content', 'filename' => 'duplicate.txt' },
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{ 'name' => 'file', 'data' => 'file2_content', 'filename' => 'duplicate.txt' },
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{ 'name' => 'file', 'data' => 'file2_content', 'filename' => 'duplicate.txt' },
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# Note, this won't actually attempt to read a file - the content will be set to 'file.txt'
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{ 'name' => 'file', 'data' => 'file.txt', 'filename' => 'duplicate.txt' }
560
]
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request = cli.request_cgi({ 'vars_form_data' => vars_form_data })
562
expected = <<~EOF
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POST / HTTP/1.1\r
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Host: #{ip}\r
565
User-Agent: #{request.opts['agent']}\r
566
Content-Type: multipart/form-data; boundary=---------------------------MockBoundary1234\r
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Content-Length: 584\r
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\r
569
-----------------------------MockBoundary1234\r
570
Content-Disposition: form-data; name="file"; filename="duplicate.txt"\r
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\r
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file1_content\r
573
-----------------------------MockBoundary1234\r
574
Content-Disposition: form-data; name="file"; filename="duplicate.txt"\r
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\r
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file2_content\r
577
-----------------------------MockBoundary1234\r
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Content-Disposition: form-data; name="file"; filename="duplicate.txt"\r
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\r
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file2_content\r
581
-----------------------------MockBoundary1234\r
582
Content-Disposition: form-data; name="file"; filename="duplicate.txt"\r
583
\r
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file.txt\r
585
-----------------------------MockBoundary1234--\r
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EOF
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expect(request.to_s).to eq(expected)
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end
589
it 'does not encode special characters in file name by default as it may be used as part of an exploit' do
590
vars_form_data = [
591
{ 'name' => 'file', 'data' => 'abc', 'content_type' => 'text/plain', 'encoding' => '8bit', 'filename' => "'t \"e 'st.txt'" }
592
]
593
request = cli.request_cgi({ 'vars_form_data' => vars_form_data })
594
expected = <<~EOF
595
POST / HTTP/1.1\r
596
Host: #{ip}\r
597
User-Agent: #{request.opts['agent']}\r
598
Content-Type: multipart/form-data; boundary=---------------------------MockBoundary1234\r
599
Content-Length: 234\r
600
\r
601
-----------------------------MockBoundary1234\r
602
Content-Disposition: form-data; name="file"; filename="'t \"e 'st.txt'"\r
603
Content-Type: text/plain\r
604
Content-Transfer-Encoding: 8bit\r
605
\r
606
abc\r
607
-----------------------------MockBoundary1234--\r
608
EOF
609
expect(request.to_s).to eq(expected)
610
end
611
it 'should handle nil filename values correctly' do
612
vars_form_data = [
613
{ 'name' => 'example_name', 'data' => 'example_data', 'filename' => nil }
614
]
615
request = cli.request_cgi({ 'vars_form_data' => vars_form_data })
616
expected = <<~EOF
617
POST / HTTP/1.1\r
618
Host: #{ip}\r
619
User-Agent: #{request.opts['agent']}\r
620
Content-Type: multipart/form-data; boundary=---------------------------MockBoundary1234\r
621
Content-Length: 165\r
622
\r
623
-----------------------------MockBoundary1234\r
624
Content-Disposition: form-data; name="example_name"\r
625
\r
626
example_data\r
627
-----------------------------MockBoundary1234--\r
628
EOF
629
expect(request.to_s).to eq(expected)
630
end
631
it 'should handle nil encoding values correctly' do
632
vars_form_data = [
633
{ 'name' => 'example_name', 'data' => 'example_data', 'encoding' => nil }
634
]
635
request = cli.request_cgi({ 'vars_form_data' => vars_form_data })
636
expected = <<~EOF
637
POST / HTTP/1.1\r
638
Host: #{ip}\r
639
User-Agent: #{request.opts['agent']}\r
640
Content-Type: multipart/form-data; boundary=---------------------------MockBoundary1234\r
641
Content-Length: 165\r
642
\r
643
-----------------------------MockBoundary1234\r
644
Content-Disposition: form-data; name="example_name"\r
645
\r
646
example_data\r
647
-----------------------------MockBoundary1234--\r
648
EOF
649
expect(request.to_s).to eq(expected)
650
end
651
it 'should handle nil content type values correctly' do
652
vars_form_data = [
653
{ 'name' => 'example_name', 'data' => 'example_data', 'content_type' => nil }
654
]
655
request = cli.request_cgi({ 'vars_form_data' => vars_form_data })
656
expected = <<~EOF
657
POST / HTTP/1.1\r
658
Host: #{ip}\r
659
User-Agent: #{request.opts['agent']}\r
660
Content-Type: multipart/form-data; boundary=---------------------------MockBoundary1234\r
661
Content-Length: 165\r
662
\r
663
-----------------------------MockBoundary1234\r
664
Content-Disposition: form-data; name="example_name"\r
665
\r
666
example_data\r
667
-----------------------------MockBoundary1234--\r
668
EOF
669
expect(request.to_s).to eq(expected)
670
end
671
672
it 'should not hang when parsing a HEAD response' do
673
response = <<~EOF
674
HTTP/1.1 200 OK
675
Date: Thu, 15 Dec 2022 02:52:42 GMT
676
Server: Apache
677
Expires: Thu, 19 Nov 1981 08:52:00 GMT
678
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
679
Pragma: no-cache
680
Vary: Accept-Encoding
681
Access-Control-Allow-Origin: *
682
Connection: close
683
Content-Type: text/html; charset=UTF-8
684
Content-Length: 1000
685
686
687
EOF
688
689
conn = double
690
allow(conn).to receive(:put)
691
allow(conn).to receive(:peerinfo)
692
allow(conn).to receive(:closed?).and_return(false)
693
694
expect(conn).to receive(:get_once).at_least(:once).and_return(response, nil)
695
allow(Rex::Socket::Tcp).to receive(:create).and_return(conn)
696
697
request = cli.request_cgi('method' => 'HEAD')
698
resp = cli.send_recv(request,5)
699
700
expect(resp.headers['Content-Length']).to eq('1000')
701
end
702
end
703
end
704
705