'''
'''
#  Licensed to the Apache Software Foundation (ASF) under one
#  or more contributor license agreements.  See the NOTICE file
#  distributed with this work for additional information
#  regarding copyright ownership.  The ASF licenses this file
#  to you under the Apache License, Version 2.0 (the
#  "License"); you may not use this file except in compliance
#  with the License.  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.

import os

Test.Summary = '''
Test chunked encoding processing
'''

Test.SkipUnless(
    Condition.HasCurlFeature('http2')
)
Test.ContinueOnFail = True

Test.GetTcpPort("upstream_port")

# Define default ATS
ts = Test.MakeATSProcess("ts", select_ports=True, enable_tls=True)
server = Test.MakeOriginServer("server")
server2 = Test.MakeOriginServer("server2", ssl=True)
server3 = Test.MakeOriginServer("server3")

testName = ""
request_header = {"headers": "GET / HTTP/1.1\r\nHost: www.example.com\r\n\r\n",
                  "timestamp": "1469733493.993",
                  "body": ""
                  }
response_header = {"headers": "HTTP/1.1 200 OK\r\nServer: uServer\r\nConnection: close\r\nTransfer-Encoding: chunked\r\n\r\n",
                   "timestamp": "1469733493.993",
                   "body": ""}

request_header2 = {
    "headers": "POST / HTTP/1.1\r\nHost: www.anotherexample.com\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: 11\r\n\r\n",
    "timestamp": "1415926535.898",
    "body": "knock knock"}
response_header2 = {"headers": "HTTP/1.1 200 OK\r\nServer: uServer\r\nConnection: close\r\nTransfer-Encoding: chunked\r\n\r\n",
                    "timestamp": "1415926535.898",
                    "body": ""}

request_header3 = {
    "headers": "POST / HTTP/1.1\r\nHost: www.yetanotherexample.com\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: 11\r\n\r\n",
    "timestamp": "1415926535.898",
    "body": "knock knock"}
response_header3 = {"headers": "HTTP/1.1 200 OK\r\nServer: uServer\r\nConnection: close\r\nTransfer-Encoding: chunked\r\n\r\n",
                    "timestamp": "1415926535.898",
                    "body": ""}

server.addResponse("sessionlog.json", request_header, response_header)
server2.addResponse("sessionlog.json", request_header2, response_header2)
server3.addResponse("sessionlog.json", request_header3, response_header3)

# add ssl materials like key, certificates for the server
ts.addDefaultSSLFiles()

ts.Disk.records_config.update({
    'proxy.config.diags.debug.enabled': 1,
    'proxy.config.diags.debug.tags': 'http',
    'proxy.config.ssl.server.cert.path': '{0}'.format(ts.Variables.SSLDir),
    'proxy.config.ssl.server.private_key.path': '{0}'.format(ts.Variables.SSLDir),
    'proxy.config.ssl.client.verify.server': 0,
    'proxy.config.ssl.server.cipher_suite': 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA384:AES128-GCM-SHA256:AES256-GCM-SHA384:ECDHE-RSA-RC4-SHA:ECDHE-RSA-AES128-SHA:ECDHE-RSA-AES256-SHA:RC4-SHA:RC4-MD5:AES128-SHA:AES256-SHA:DES-CBC3-SHA!SRP:!DSS:!PSK:!aNULL:!eNULL:!SSLv2',
})

ts.Disk.remap_config.AddLine(
    'map http://www.example.com http://127.0.0.1:{0}'.format(server.Variables.Port)
)
ts.Disk.remap_config.AddLine(
    'map http://www.yetanotherexample.com http://127.0.0.1:{0}'.format(server3.Variables.Port)
)
ts.Disk.remap_config.AddLine(
    'map https://www.anotherexample.com https://127.0.0.1:{0}'.format(server2.Variables.SSL_Port, ts.Variables.ssl_port)
)
ts.Disk.remap_config.AddLine(
    'map / http://127.0.0.1:{0}'.format(Test.Variables.upstream_port)
)

ts.Disk.ssl_multicert_config.AddLine(
    'dest_ip=* ssl_cert_name=server.pem ssl_key_name=server.key'
)

# smuggle-client is built via `make`. Here we copy the built binary down to the
# test directory so that the test runs in this file can use it.
Test.Setup.Copy(os.path.join(Test.Variables.AtsBuildGoldTestsDir, 'chunked_encoding', 'smuggle-client'))

# HTTP1.1 GET: www.example.com
tr = Test.AddTestRun()
tr.TimeOut = 5
tr.Processes.Default.Command = 'curl --http1.1 --proxy 127.0.0.1:{0} http://www.example.com  --verbose'.format(
    ts.Variables.port)
tr.Processes.Default.ReturnCode = 0
tr.Processes.Default.StartBefore(server)
tr.Processes.Default.StartBefore(server2)
tr.Processes.Default.StartBefore(server3)
# Delay on readiness of our ssl ports
tr.Processes.Default.StartBefore(Test.Processes.ts)
tr.Processes.Default.Streams.stderr = "gold/chunked_GET_200.gold"
tr.StillRunningAfter = server
tr.StillRunningAfter = ts

# HTTP2 POST: www.example.com Host, chunked body
tr = Test.AddTestRun()
tr.TimeOut = 5
tr.Processes.Default.Command = 'curl --http2 -k https://127.0.0.1:{0} --verbose -H "Host: www.anotherexample.com" -d "Knock knock"'.format(
    ts.Variables.ssl_port)
tr.Processes.Default.ReturnCode = 0
tr.Processes.Default.Streams.stderr = "gold/h2_chunked_POST_200.gold"

# HTTP1.1 POST: www.yetanotherexample.com Host, explicit size
tr = Test.AddTestRun()
tr.TimeOut = 5
tr.Processes.Default.Command = 'curl http://127.0.0.1:{0} -H "Host: www.yetanotherexample.com" --verbose -d "knock knock"'.format(
    ts.Variables.port)
tr.Processes.Default.ReturnCode = 0
tr.Processes.Default.Streams.stderr = "gold/chunked_POST_200.gold"
tr.StillRunningAfter = server

# HTTP1.1 POST: www.example.com Host, chunked body
tr = Test.AddTestRun()
tr.TimeOut = 5
tr.Processes.Default.Command = 'curl http://127.0.0.1:{0} -H "Host: www.yetanotherexample.com" --verbose -H "Transfer-Encoding: chunked" -d "Knock knock"'.format(
    ts.Variables.port)
tr.Processes.Default.ReturnCode = 0
tr.Processes.Default.Streams.stderr = "gold/chunked_POST_200.gold"
tr.StillRunningAfter = server

server4_out = Test.Disk.File("outserver4")
server4_out.Content = Testers.ExcludesExpression("sneaky", "Extra body bytes should not be delivered")

# HTTP/1.1 Try to smuggle another request to the origin
tr = Test.AddTestRun()
tr.TimeOut = 5
tr.Setup.Copy('server4.sh')
tr.Setup.Copy('case4.sh')
tr.Processes.Default.Command = 'sh ./case4.sh {0} {1}'.format(ts.Variables.ssl_port, Test.Variables.upstream_port)
tr.Processes.Default.ReturnCode = 0
tr.Processes.Default.Streams.All = Testers.ExcludesExpression("content-length:", "Response should not include content length")
# Transfer encoding to origin, but no content-length
# No extra bytes in body seen by origin
