7 files changed, 781 insertions, 0 deletions
diff --git a/tests/white-box/couchdb.rb b/tests/white-box/couchdb.rb
new file mode 100644
index 00000000..85dc6840
--- /dev/null
+++ b/tests/white-box/couchdb.rb
@@ -0,0 +1,186 @@
+raise SkipTest unless service?(:couchdb)
+
+require 'json'
+
+class CouchDB < LeapTest
+  depends_on "Network"
+
+  def setup
+  end
+
+  def test_00_Are_daemons_running?
+    assert_running 'bin/beam'
+    if multimaster?
+      assert_running 'bin/epmd'
+    end
+    pass
+  end
+
+  #
+  # check to make sure we can get welcome response from local couchdb
+  #
+  def test_01_Is_CouchDB_running?
+    assert_get(couchdb_url) do |body|
+      assert_match /"couchdb":"Welcome"/, body, "Could not get welcome message from #{couchdb_url}. Probably couchdb is not running."
+    end
+    pass
+  end
+
+  #
+  # compare the configured nodes to the nodes that are actually listed in bigcouch
+  #
+  def test_02_Is_cluster_membership_ok?
+    return unless multimaster?
+    url = couchdb_backend_url("/nodes/_all_docs")
+    neighbors = assert_property('couch.bigcouch.neighbors')
+    neighbors << assert_property('domain.full')
+    neighbors.sort!
+    assert_get(url) do |body|
+      response = JSON.parse(body)
+      nodes_in_db = response['rows'].collect{|row| row['id'].sub(/^bigcouch@/, '')}.sort
+      assert_equal neighbors, nodes_in_db, "The couchdb replication node list is wrong (/nodes/_all_docs)"
+    end
+    pass
+  end
+
+  #
+  # all configured nodes are in 'cluster_nodes'
+  # all nodes online and communicating are in 'all_nodes'
+  #
+  # this seems backward to me, so it might be the other way around.
+  #
+  def test_03_Are_configured_nodes_online?
+    return unless multimaster?
+    url = couchdb_url("/_membership", :username => 'admin')
+    assert_get(url) do |body|
+      response = JSON.parse(body)
+      nodes_configured_but_not_available = response['cluster_nodes'] - response['all_nodes']
+      nodes_available_but_not_configured = response['all_nodes'] - response['cluster_nodes']
+      if nodes_configured_but_not_available.any?
+        warn "These nodes are configured but not available:", nodes_configured_but_not_available
+      end
+      if nodes_available_but_not_configured.any?
+        warn "These nodes are available but not configured:", nodes_available_but_not_configured
+      end
+      if response['cluster_nodes'] == response['all_nodes']
+        pass
+      end
+    end
+  end
+
+  def test_04_Do_ACL_users_exist?
+    acl_users = ['_design/_auth', 'leap_mx', 'nickserver', 'soledad', 'webapp', 'replication']
+    url = couchdb_backend_url("/_users/_all_docs", :username => 'admin')
+    assert_get(url) do |body|
+      response = JSON.parse(body)
+      assert_equal acl_users.count, response['total_rows']
+      actual_users = response['rows'].map{|row| row['id'].sub(/^org.couchdb.user:/, '') }
+      assert_equal acl_users.sort, actual_users.sort
+    end
+    pass
+  end
+
+  def test_05_Do_required_databases_exist?
+    dbs_that_should_exist = ["customers","identities","keycache","shared","tickets","users", "tmp_users"]
+    dbs_that_should_exist << "tokens_#{rotation_suffix}"
+    dbs_that_should_exist << "sessions_#{rotation_suffix}"
+    dbs_that_should_exist.each do |db_name|
+      url = couchdb_url("/"+db_name, :username => 'admin')
+      assert_get(url) do |body|
+        assert response = JSON.parse(body)
+        assert_equal db_name, response['db_name']
+      end
+    end
+    pass
+  end
+
+  # disable ACL enforcement, because it's a known issue with bigcouch
+  # and will only confuse the user
+  # see https://leap.se/code/issues/6030 for more details
+  #
+  ## for now, this just prints warnings, since we are failing these tests.
+  ##
+
+  #def test_06_Is_ACL_enforced?
+  #  ok = assert_auth_fail(
+  #    couchdb_url('/users/_all_docs', :username => 'leap_mx'),
+  #    {:limit => 1}
+  #  )
+  #  ok = assert_auth_fail(
+  #    couchdb_url('/users/_all_docs', :username => 'leap_mx'),
+  #    {:limit => 1}
+  #  ) && ok
+  #  pass if ok
+  #end
+
+  def test_07_Can_records_be_created?
+    record = DummyRecord.new
+    url = couchdb_url("/tokens_#{rotation_suffix}", :username => 'admin')
+    assert_post(url, record, :format => :json) do |body|
+      assert response = JSON.parse(body), "POST response should be JSON"
+      assert response["ok"], "POST response should be OK"
+      assert_delete(File.join(url, response["id"]), :rev => response["rev"]) do |body|
+        assert response = JSON.parse(body), "DELETE response should be JSON"
+        assert response["ok"], "DELETE response should be OK"
+      end
+    end
+    pass
+  end
+
+  #
+  # This is not really a "test", just an attempt to make sure that
+  # the mx tests that fire off dummy emails don't fill up the
+  # storage db.
+  #
+  # mx tests can't run this because they don't have access to
+  # the storage db.
+  #
+  # This "test" is responsible for both creating the db if it does not
+  # exist, and destroying if it does.
+  #
+  # Yes, this is super hacky. Properly, we should add something to
+  # the soledad api to support create/delete of user storage dbs.
+  #
+  def test_99_Delete_mail_storage_used_in_mx_tests
+    user = find_user_by_login(TEST_EMAIL_USER)
+    if user
+      if user_db_exists?(user["id"])
+        # keep the test email db from filling up:
+        assert_destroy_user_db(user["id"], :username => 'admin')
+      end
+      # either way, make sure we leave a db for the mx tests:
+      assert_create_user_db(user["id"], :username => 'admin')
+    end
+    silent_pass
+  end
+
+  private
+
+  def multimaster?
+    mode == "multimaster"
+  end
+
+  def mode
+    assert_property('couch.mode')
+  end
+
+  # TODO: admin port is hardcoded for now but should be configurable.
+  def couchdb_backend_url(path="", options={})
+    options = {port: multimaster? && "5986"}.merge options
+    couchdb_url(path, options)
+  end
+
+  def rotation_suffix
+    rotation_suffix = Time.now.utc.to_i / 2592000 # monthly
+  end
+
+  require 'securerandom'
+  require 'digest/sha2'
+  class DummyRecord < Hash
+    def initialize
+      self['data'] = SecureRandom.urlsafe_base64(32).gsub(/^_*/, '')
+      self['_id'] = Digest::SHA512.hexdigest(self['data'])
+    end
+  end
+
+end
diff --git a/tests/white-box/dummy.rb b/tests/white-box/dummy.rb
new file mode 100644
index 00000000..a3e8ad68
--- /dev/null
+++ b/tests/white-box/dummy.rb
@@ -0,0 +1,71 @@
+# only run in the dummy case where there is no hiera.yaml file.
+raise SkipTest unless $node["dummy"]
+
+class Robot
+  def can_shoot_lasers?
+    "OHAI!"
+  end
+
+  def can_fly?
+    "YES!"
+  end
+end
+
+class TestDummy < LeapTest
+  def setup
+    @robot = Robot.new
+  end
+
+  def test_lasers
+    assert_equal "OHAI!", @robot.can_shoot_lasers?
+    pass
+  end
+
+  def test_fly
+    refute_match /^no/i, @robot.can_fly?
+    pass
+  end
+
+  def test_fail
+    fail "fail"
+    pass
+  end
+
+  def test_01_will_be_skipped
+    skip "test this later"
+    pass
+  end
+
+  def test_socket_failure
+    assert_tcp_socket('localhost', 900000)
+    pass
+  end
+
+  def test_warn
+    block_test do
+      warn "not everything", "is a success or failure"
+    end
+  end
+
+  # used to test extracting the proper caller even when in a block
+  def block_test
+    yield
+  end
+
+  def test_socket_success
+    fork {
+      Socket.tcp_server_loop('localhost', 12345) do |sock, client_addrinfo|
+        begin
+          sock.write('hi')
+        ensure
+          sock.close
+          exit
+        end
+      end
+    }
+    sleep 0.2
+    assert_tcp_socket('localhost', 12345)
+    pass
+  end
+
+end
diff --git a/tests/white-box/mx.rb b/tests/white-box/mx.rb
new file mode 100644
index 00000000..e0cb273a
--- /dev/null
+++ b/tests/white-box/mx.rb
@@ -0,0 +1,267 @@
+raise SkipTest unless service?(:mx)
+
+require 'date'
+require 'json'
+require 'net/smtp'
+
+class Mx < LeapTest
+  depends_on "Network"
+  depends_on "Webapp" if service?(:webapp)
+
+  def setup
+  end
+
+  def test_01_Can_contact_couchdb?
+    dbs = ["identities"]
+    dbs.each do |db_name|
+      couchdb_urls("/"+db_name, couch_url_options).each do |url|
+        assert_get(url) do |body|
+          assert response = JSON.parse(body)
+          assert_equal db_name, response['db_name']
+        end
+      end
+    end
+    pass
+  end
+
+  def test_02_Can_contact_couchdb_via_haproxy?
+    if property('haproxy.couch')
+      url = couchdb_url_via_haproxy("", couch_url_options)
+      assert_get(url) do |body|
+        assert_match /"couchdb":"Welcome"/, body, "Request to #{url} should return couchdb welcome message."
+      end
+      pass
+    end
+  end
+
+  #
+  # this test picks a random identity document, then queries
+  # using the by_address view for that same document again.
+  #
+  def test_03_Can_query_identities_db?
+    ident = pick_random_identity
+    address = ident['address']
+    url_base = %(/identities/_design/Identity/_view/by_address)
+    params = %(?include_docs=true&reduce=false&startkey="#{address}"&endkey="#{address}")
+    assert_get(couchdb_url(url_base+params, couch_url_options)) do |body|
+      assert response = JSON.parse(body)
+      assert record = response['rows'].first
+      assert_equal address, record['doc']['address']
+      pass
+    end
+  end
+
+  def test_04_Are_MX_daemons_running?
+    assert_running '.*/usr/bin/twistd.*mx.tac'
+    assert_running '^/usr/lib/postfix/master$'
+    assert_running '^/usr/sbin/postfwd'
+    assert_running 'postfwd2::cache$'
+    assert_running 'postfwd2::policy$'
+    assert_running '^/usr/sbin/unbound$'
+    assert_running '^/usr/bin/freshclam'
+    assert_running '^/usr/sbin/opendkim'
+    if Dir.glob("/var/lib/clamav/main.{c[vl]d,inc}").size > 0 and Dir.glob("/var/lib/clamav/daily.{c[vl]d,inc}").size > 0
+      assert_running '^/usr/sbin/clamd'
+      assert_running '^/usr/sbin/clamav-milter'
+    else
+      skip "Downloading the clamav signature files (/var/lib/clamav/{daily,main}.{c[vl]d,inc}) is still in progress, so clamd is not running.\nDon't worry, mail delivery will work without clamav. The download should finish soon."
+    end
+    pass
+  end
+
+  #
+  # TODO: test to make sure postmap returned the right result
+  #
+  def test_05_Can_postfix_query_leapmx?
+    ident = pick_random_identity(10, :with_public_key => true)
+    address = ident["address"]
+
+    #
+    # virtual alias map:
+    #
+    #   user@domain => 41c29a80a44f4775513c64ac9cab91b9@deliver.local
+    #
+    assert_run("postmap -v -q \"#{address}\" tcp:localhost:4242")
+
+    #
+    # recipient access map:
+    #
+    #   user@domain => [OK|REJECT|TEMP_FAIL]
+    #
+    # This map is queried by the mail server before delivery to the mail spool
+    # directory, and should check if the address is able to receive messages.
+    # Examples of reasons for denying delivery would be that the user is out of
+    # quota, is user, or have no pgp public key in the server.
+    #
+    # NOTE: in the future, when we support quota, we need to make sure that
+    # we don't randomly pick a user for this test that happens to be over quota.
+    #
+    assert_run("postmap -v -q \"#{address}\" tcp:localhost:2244")
+
+    #
+    # certificate validity map:
+    #
+    #  fa:2a:70:1f:d8:16:4e:1a:3b:15:c1:67:00:f0 => [200|500]
+    #
+    # Determines whether a particular SMTP client cert is authorized
+    # to relay mail, based on the fingerprint.
+    #
+    if ident["cert_fingerprints"]
+      not_expired = ident["cert_fingerprints"].select {|key, value|
+        Time.now.utc < DateTime.strptime("2016-01-03", "%F").to_time.utc
+      }
+      if not_expired.any?
+        fingerprint = not_expired.first
+        assert_run("postmap -v -q #{fingerprint} tcp:localhost:2424")
+      end
+    end
+
+    pass
+  end
+
+  #
+  # The email sent by this test might get bounced back.
+  # In this case, the test will pass, but the bounce message will
+  # get sent to root, so the sysadmin will still figure out pretty
+  # quickly that something is wrong.
+  #
+  def test_06_Can_deliver_email?
+    addr = [TEST_EMAIL_USER, property('domain.full_suffix')].join('@')
+    bad_addr = [TEST_BAD_USER, property('domain.full_suffix')].join('@')
+
+    assert !identity_exists?(bad_addr), "the address #{bad_addr} must not exist."
+    if !identity_exists?(addr)
+      user = assert_create_user(TEST_EMAIL_USER, :monitor)
+      upload_public_key(user.id, TEST_EMAIL_PUBLIC_KEY)
+    end
+    assert identity_exists?(addr), "The identity #{addr} should have been created, but it doesn't exist yet."
+    assert_send_email(addr)
+    assert_raises(Net::SMTPError) do
+      send_email(bad_addr)
+    end
+    pass
+  end
+
+  private
+
+  def couch_url_options
+    {
+      :username => property('couchdb_leap_mx_user.username'),
+      :password => property('couchdb_leap_mx_user.password')
+    }
+  end
+
+  #
+  # returns a random identity record that also has valid address
+  # and destination fields.
+  #
+  # options:
+  #
+  # * :with_public_key -- searches only for identities with public keys
+  #
+  # note to self: for debugging, here is the curl you want:
+  # curl --netrc "127.0.0.1:5984/identities/_design/Identity/_view/by_address?startkey=\"xxxx@leap.se\"&endkey=\"xxxx@leap.se\"&reduce=false&include_docs=true"
+  #
+  def pick_random_identity(tries=5, options={})
+    assert_get(couchdb_url("/identities", couch_url_options)) do |body|
+      assert response = JSON.parse(body)
+      doc_count = response['doc_count'].to_i
+      if doc_count <= 1
+        # the design document counts as one document.
+        skip "There are no identity documents yet."
+      else
+        # try repeatedly to get a valid doc
+        for i in 1..tries
+          offset    = rand(doc_count) # pick a random document
+          url = couchdb_url("/identities/_all_docs?include_docs=true&limit=1&skip=#{offset}", couch_url_options)
+          assert_get(url) do |body|
+            assert response = JSON.parse(body)
+            record = response['rows'].first
+            if record['id'] =~ /_design/
+              next
+            elsif record['doc'] && record['doc']['address']
+              next if record['doc']['destination'].nil? || record['doc']['destination'].empty?
+              next if options[:with_public_key] && !record_has_key?(record)
+              return record['doc']
+            else
+              fail "Identity document #{record['id']} is missing an address field. #{record['doc'].inspect}"
+            end
+          end
+        end
+        if options[:with_public_key]
+          skip "Could not find an Identity document with a public key for testing."
+        else
+          fail "Failed to find a valid Identity document (with address and destination)."
+        end
+      end
+    end
+  end
+
+  def record_has_key?(record)
+    !record['doc']['keys'].nil? &&
+    !record['doc']['keys'].empty? &&
+    !record['doc']['keys']['pgp'].nil? &&
+    !record['doc']['keys']['pgp'].empty?
+  end
+
+  TEST_EMAIL_PUBLIC_KEY=<<HERE
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+mI0EVvzIKQEEAN4f8FOGntJGTTD+fFUQS6y/ihn6tYLtyGZZbCOd0t/9kHt/raoR
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+=qclE
+-----END PGP PUBLIC KEY BLOCK-----
+HERE
+
+  TEST_EMAIL_PRIVATE_KEY = <<HERE
+-----BEGIN PGP PRIVATE KEY BLOCK-----
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+tp2+0m00MOsDqVOeLu/uXUkNN5bVB4NaMMumNwjDnhS/nvQC6QGQFGjMGO8zBYap
+T1WWTH3TC0bHS4p+u0SDPjiegPduQDOdmxEE9WMJEJT+Jr0G
+=hvJM
+-----END PGP PRIVATE KEY BLOCK-----
+HERE
+
+end
diff --git a/tests/white-box/network.rb b/tests/white-box/network.rb
new file mode 100644
index 00000000..436fc8a8
--- /dev/null
+++ b/tests/white-box/network.rb
@@ -0,0 +1,90 @@
+require 'socket'
+require 'openssl'
+
+raise SkipTest if $node["dummy"]
+
+class Network < LeapTest
+
+  def setup
+  end
+
+  def test_01_Can_connect_to_internet?
+    assert_get('http://www.google.com/images/srpr/logo11w.png')
+    pass
+  end
+
+  #
+  # example properties:
+  #
+  # stunnel:
+  #   ednp_clients:
+  #     elk_9002:
+  #       accept_port: 4003
+  #       connect: elk.dev.bitmask.i
+  #       connect_port: 19002
+  #   couch_server:
+  #     accept: 15984
+  #     connect: "127.0.0.1:5984"
+  #
+  def test_02_Is_stunnel_running?
+    ignore unless $node['stunnel']
+    good_stunnel_pids = []
+    release = `facter lsbmajdistrelease`
+    if release.to_i > 7
+      # on jessie, there is only one stunnel proc running instead of 6
+      expected = 1
+    else
+      expected = 6
+    end
+    $node['stunnel']['clients'].each do |stunnel_type, stunnel_configs|
+      stunnel_configs.each do |stunnel_name, stunnel_conf|
+        config_file_name = "/etc/stunnel/#{stunnel_name}.conf"
+        processes = pgrep(config_file_name)
+        assert_equal expected, processes.length, "There should be #{expected} stunnel processes running for `#{config_file_name}`"
+        good_stunnel_pids += processes.map{|ps| ps[:pid]}
+        assert port = stunnel_conf['accept_port'], 'Field `accept_port` must be present in `stunnel` property.'
+        assert_tcp_socket('localhost', port)
+      end
+    end
+    $node['stunnel']['servers'].each do |stunnel_name, stunnel_conf|
+      config_file_name = "/etc/stunnel/#{stunnel_name}.conf"
+      processes = pgrep(config_file_name)
+      assert_equal expected, processes.length, "There should be #{expected} stunnel processes running for `#{config_file_name}`"
+      good_stunnel_pids += processes.map{|ps| ps[:pid]}
+      assert accept_port = stunnel_conf['accept_port'], "Field `accept` must be present in property `stunnel.servers.#{stunnel_name}`"
+      assert_tcp_socket('localhost', accept_port)
+      assert connect_port = stunnel_conf['connect_port'], "Field `connect` must be present in property `stunnel.servers.#{stunnel_name}`"
+      assert_tcp_socket('localhost', connect_port,
+        "The local connect endpoint for stunnel `#{stunnel_name}` is unavailable.\n"+
+        "This is probably caused by a daemon that died or failed to start on\n"+
+        "port `#{connect_port}`, not stunnel itself.")
+    end
+    all_stunnel_pids = pgrep('/usr/bin/stunnel').collect{|process| process[:pid]}.uniq
+    assert_equal good_stunnel_pids.sort, all_stunnel_pids.sort, "There should not be any extra stunnel processes that are not configured in /etc/stunnel"
+    pass
+  end
+
+  def test_03_Is_shorewall_running?
+    ignore unless File.exists?('/sbin/shorewall')
+    assert_run('/sbin/shorewall status')
+    pass
+  end
+
+  THIRTY_DAYS = 60*60*24*30
+
+  def test_04_Are_server_certificates_valid?
+    cert_paths = ["/etc/x509/certs/leap_commercial.crt", "/etc/x509/certs/leap.crt"]
+    cert_paths.each do |cert_path|
+      if File.exists?(cert_path)
+        cert = OpenSSL::X509::Certificate.new(File.read(cert_path))
+        if Time.now > cert.not_after
+          fail "The certificate #{cert_path} expired on #{cert.not_after}"
+        elsif Time.now + THIRTY_DAYS > cert.not_after
+          fail "The certificate #{cert_path} will expire soon, on #{cert.not_after}"
+        end
+      end
+    end
+    pass
+  end
+
+end
diff --git a/tests/white-box/openvpn.rb b/tests/white-box/openvpn.rb
new file mode 100644
index 00000000..170d4503
--- /dev/null
+++ b/tests/white-box/openvpn.rb
@@ -0,0 +1,16 @@
+raise SkipTest unless service?(:openvpn)
+
+class OpenVPN < LeapTest
+  depends_on "Network"
+
+  def setup
+  end
+
+  def test_01_Are_daemons_running?
+    assert_running '^/usr/sbin/openvpn .* /etc/openvpn/tcp_config.conf$'
+    assert_running '^/usr/sbin/openvpn .* /etc/openvpn/udp_config.conf$'
+    assert_running '^/usr/sbin/unbound$'
+    pass
+  end
+
+end
diff --git a/tests/white-box/soledad.rb b/tests/white-box/soledad.rb
new file mode 100644
index 00000000..d41bee58
--- /dev/null
+++ b/tests/white-box/soledad.rb
@@ -0,0 +1,17 @@
+raise SkipTest unless service?(:soledad)
+
+require 'json'
+
+class Soledad < LeapTest
+  depends_on "Network"
+  depends_on "CouchDB" if service?(:couchdb)
+
+  def setup
+  end
+
+  def test_00_Is_Soledad_running?
+    assert_running '.*/usr/bin/twistd.*--wsgi=leap.soledad.server.application'
+    pass
+  end
+
+end
diff --git a/tests/white-box/webapp.rb b/tests/white-box/webapp.rb
new file mode 100644
index 00000000..68f3dcd2
--- /dev/null
+++ b/tests/white-box/webapp.rb
@@ -0,0 +1,134 @@
+raise SkipTest unless service?(:webapp)
+
+require 'json'
+
+class Webapp < LeapTest
+  depends_on "Network"
+
+  def setup
+  end
+
+  def test_01_Can_contact_couchdb?
+    url = couchdb_url("", url_options)
+    assert_get(url) do |body|
+      assert_match /"couchdb":"Welcome"/, body, "Request to #{url} should return couchdb welcome message."
+    end
+    pass
+  end
+
+  def test_02_Can_contact_couchdb_via_haproxy?
+    if property('haproxy.couch')
+      url = couchdb_url_via_haproxy("", url_options)
+      assert_get(url) do |body|
+        assert_match /"couchdb":"Welcome"/, body, "Request to #{url} should return couchdb welcome message."
+      end
+      pass
+    end
+  end
+
+  def test_03_Are_daemons_running?
+    assert_running '^/usr/sbin/apache2'
+    assert_running '^/usr/bin/ruby /usr/bin/nickserver'
+    pass
+  end
+
+  #
+  # this is technically a black-box test. so, move this when we have support
+  # for black box tests.
+  #
+  def test_04_Can_access_webapp?
+    assert_get('https://' + $node['webapp']['domain'] + '/')
+    pass
+  end
+
+  def test_05_Can_create_and_authenticate_and_delete_user_via_API?
+    if property('webapp.allow_registration')
+      assert_tmp_user
+      pass
+    else
+      skip "New user registrations are disabled."
+    end
+  end
+
+  def test_06_Can_sync_Soledad?
+    return unless property('webapp.allow_registration')
+    soledad_config = property('definition_files.soledad_service')
+    if soledad_config && !soledad_config.empty?
+      soledad_server = pick_soledad_server(soledad_config)
+      if soledad_server
+        assert_tmp_user do |user|
+          command = File.expand_path "../../helpers/soledad_sync.py", __FILE__
+          soledad_url = "https://#{soledad_server}/user-#{user.id}"
+          soledad_cert = "/usr/local/share/ca-certificates/leap_ca.crt"
+          assert_run "#{command} #{user.id} #{user.session_token} #{soledad_url} #{soledad_cert} #{user.password}"
+          assert_user_db_exists(user)
+          pass
+        end
+      end
+    else
+      skip 'No soledad service configuration'
+    end
+  end
+
+  private
+
+  def url_options
+    {
+      :username => property('webapp.couchdb_webapp_user.username'),
+      :password => property('webapp.couchdb_webapp_user.password')
+    }
+  end
+
+  #
+  # pick a random soledad server.
+  # I am not sure why, but using IP address directly does not work.
+  #
+  def pick_soledad_server(soledad_config_json_str)
+    soledad_config = JSON.parse(soledad_config_json_str)
+    host_name = soledad_config['hosts'].keys.shuffle.first
+    if host_name
+      hostname = soledad_config['hosts'][host_name]['hostname']
+      port = soledad_config['hosts'][host_name]['port']
+      return "#{hostname}:#{port}"
+    else
+      return nil
+    end
+  end
+
+  #
+  # returns true if the per-user db created by soledad-server exists.
+  # we try three times, and give up after that.
+  #
+  def assert_user_db_exists(user)
+    db_name = "user-#{user.id}"
+    repeatedly_try("/#{db_name}") do |body, response, error|
+      assert false, "Could not find user db `#{db_name}` for test user `#{user.username}`\nuuid=#{user.id}\nHTTP #{response.code} #{error} #{body}"
+    end
+    repeatedly_try("/#{db_name}/_design/docs") do |body, response, error|
+      assert false, "Could not find design docs for user db `#{db_name}` for test user `#{user.username}`\nuuid=#{user.id}\nHTTP #{response.code} #{error} #{body}"
+    end
+  end
+
+  #
+  # tries the URL repeatedly, giving up and yield the last response if
+  # no try returned a 200 http status code.
+  #
+  def repeatedly_try(url, &block)
+    last_body, last_response, last_error = nil
+    3.times do
+      sleep 0.2
+      get(couchdb_url(url)) do |body, response, error|
+        last_body, last_response, last_error = body, response, error
+        # After moving to couchdb, webapp user is not allowed to Read user dbs,
+        # but the return code for non-existent databases is 404. See #7674
+        if response.code.to_i == 401
+          return
+        end
+      end
+      sleep 1
+    end
+    yield last_body, last_response, last_error
+    return
+  end
+
+end