314 lines
9.8 KiB
Python
314 lines
9.8 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2014 OpenMarket Ltd
|
|
#
|
|
# Licensed 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.
|
|
|
|
|
|
from twisted.internet import defer, reactor
|
|
from twisted.internet.error import DNSLookupError
|
|
from twisted.web.client import _AgentBase, _URI, readBody, FileBodyProducer, PartialDownloadError
|
|
from twisted.web.http_headers import Headers
|
|
|
|
from synapse.http.endpoint import matrix_endpoint
|
|
from synapse.util.async import sleep
|
|
|
|
from syutil.jsonutil import encode_canonical_json
|
|
|
|
from synapse.api.errors import CodeMessageException, SynapseError
|
|
|
|
from StringIO import StringIO
|
|
|
|
import json
|
|
import logging
|
|
import urllib
|
|
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class MatrixHttpAgent(_AgentBase):
|
|
|
|
def __init__(self, reactor, pool=None):
|
|
_AgentBase.__init__(self, reactor, pool)
|
|
|
|
def request(self, destination, endpoint, method, path, params, query,
|
|
headers, body_producer):
|
|
|
|
host = b""
|
|
port = 0
|
|
fragment = b""
|
|
|
|
parsed_URI = _URI(b"http", destination, host, port, path, params,
|
|
query, fragment)
|
|
|
|
# Set the connection pool key to be the destination.
|
|
key = destination
|
|
|
|
return self._requestWithEndpoint(key, endpoint, method, parsed_URI,
|
|
headers, body_producer,
|
|
parsed_URI.originForm)
|
|
|
|
|
|
class BaseHttpClient(object):
|
|
"""Base class for HTTP clients using twisted.
|
|
"""
|
|
|
|
def __init__(self, hs):
|
|
self.agent = MatrixHttpAgent(reactor)
|
|
self.hs = hs
|
|
|
|
@defer.inlineCallbacks
|
|
def _create_request(self, destination, method, path_bytes, param_bytes=b"",
|
|
query_bytes=b"", producer=None, headers_dict={},
|
|
retry_on_dns_fail=True, on_send_callback=None):
|
|
""" Creates and sends a request to the given url
|
|
"""
|
|
headers_dict[b"User-Agent"] = [b"Synapse"]
|
|
headers_dict[b"Host"] = [destination]
|
|
|
|
logger.debug("Sending request to %s: %s %s;%s?%s",
|
|
destination, method, path_bytes, param_bytes, query_bytes)
|
|
|
|
logger.debug(
|
|
"Types: %s",
|
|
[
|
|
type(destination), type(method), type(path_bytes),
|
|
type(param_bytes),
|
|
type(query_bytes)
|
|
]
|
|
)
|
|
|
|
retries_left = 5
|
|
|
|
endpoint = self._getEndpoint(reactor, destination);
|
|
|
|
while True:
|
|
if on_send_callback:
|
|
on_send_callback(destination, method, path_bytes, producer)
|
|
|
|
try:
|
|
response = yield self.agent.request(
|
|
destination,
|
|
endpoint,
|
|
method,
|
|
path_bytes,
|
|
param_bytes,
|
|
query_bytes,
|
|
Headers(headers_dict),
|
|
producer
|
|
)
|
|
|
|
logger.debug("Got response to %s", method)
|
|
break
|
|
except Exception as e:
|
|
if not retry_on_dns_fail and isinstance(e, DNSLookupError):
|
|
logger.warn("DNS Lookup failed to %s with %s", destination,
|
|
e)
|
|
raise SynapseError(400, "Domain specified not found.")
|
|
|
|
logger.exception("Got error in _create_request")
|
|
_print_ex(e)
|
|
|
|
if retries_left:
|
|
yield sleep(2 ** (5 - retries_left))
|
|
retries_left -= 1
|
|
else:
|
|
raise
|
|
|
|
if 200 <= response.code < 300:
|
|
# We need to update the transactions table to say it was sent?
|
|
pass
|
|
else:
|
|
# :'(
|
|
# Update transactions table?
|
|
logger.error(
|
|
"Got response %d %s", response.code, response.phrase
|
|
)
|
|
raise CodeMessageException(
|
|
response.code, response.phrase
|
|
)
|
|
|
|
defer.returnValue(response)
|
|
|
|
|
|
class MatrixHttpClient(BaseHttpClient):
|
|
""" Wrapper around the twisted HTTP client api. Implements
|
|
|
|
Attributes:
|
|
agent (twisted.web.client.Agent): The twisted Agent used to send the
|
|
requests.
|
|
"""
|
|
|
|
RETRY_DNS_LOOKUP_FAILURES = "__retry_dns"
|
|
|
|
@defer.inlineCallbacks
|
|
def put_json(self, destination, path, data, on_send_callback=None):
|
|
""" Sends the specifed json data using PUT
|
|
|
|
Args:
|
|
destination (str): The remote server to send the HTTP request
|
|
to.
|
|
path (str): The HTTP path.
|
|
data (dict): A dict containing the data that will be used as
|
|
the request body. This will be encoded as JSON.
|
|
|
|
Returns:
|
|
Deferred: Succeeds when we get a 2xx HTTP response. The result
|
|
will be the decoded JSON body. On a 4xx or 5xx error response a
|
|
CodeMessageException is raised.
|
|
"""
|
|
response = yield self._create_request(
|
|
destination.encode("ascii"),
|
|
"PUT",
|
|
path.encode("ascii"),
|
|
producer=_JsonProducer(data),
|
|
headers_dict={"Content-Type": ["application/json"]},
|
|
on_send_callback=on_send_callback,
|
|
)
|
|
|
|
logger.debug("Getting resp body")
|
|
body = yield readBody(response)
|
|
logger.debug("Got resp body")
|
|
|
|
defer.returnValue((response.code, body))
|
|
|
|
@defer.inlineCallbacks
|
|
def get_json(self, destination, path, args={}, retry_on_dns_fail=True):
|
|
""" Get's some json from the given host homeserver and path
|
|
|
|
Args:
|
|
destination (str): The remote server to send the HTTP request
|
|
to.
|
|
path (str): The HTTP path.
|
|
args (dict): A dictionary used to create query strings, defaults to
|
|
None.
|
|
**Note**: The value of each key is assumed to be an iterable
|
|
and *not* a string.
|
|
|
|
Returns:
|
|
Deferred: Succeeds when we get *any* HTTP response.
|
|
|
|
The result of the deferred is a tuple of `(code, response)`,
|
|
where `response` is a dict representing the decoded JSON body.
|
|
"""
|
|
logger.debug("get_json args: %s", args)
|
|
|
|
query_bytes = urllib.urlencode(args, True)
|
|
logger.debug("Query bytes: %s Retry DNS: %s", args, retry_on_dns_fail)
|
|
|
|
response = yield self._create_request(
|
|
destination.encode("ascii"),
|
|
"GET",
|
|
path.encode("ascii"),
|
|
query_bytes=query_bytes,
|
|
retry_on_dns_fail=retry_on_dns_fail
|
|
)
|
|
|
|
body = yield readBody(response)
|
|
|
|
defer.returnValue(json.loads(body))
|
|
|
|
|
|
def _getEndpoint(self, reactor, destination):
|
|
return matrix_endpoint(
|
|
reactor, destination, timeout=10,
|
|
ssl_context_factory=self.hs.tls_context_factory
|
|
)
|
|
|
|
|
|
class IdentityServerHttpClient(BaseHttpClient):
|
|
"""Separate HTTP client for talking to the Identity servers since they
|
|
don't use SRV records and talk x-www-form-urlencoded rather than JSON.
|
|
"""
|
|
def _getEndpoint(self, reactor, destination):
|
|
#TODO: This should be talking TLS
|
|
return matrix_endpoint(reactor, destination, timeout=10)
|
|
|
|
@defer.inlineCallbacks
|
|
def post_urlencoded_get_json(self, destination, path, args={}):
|
|
logger.debug("post_urlencoded_get_json args: %s", args)
|
|
query_bytes = urllib.urlencode(args, True)
|
|
|
|
response = yield self._create_request(
|
|
destination.encode("ascii"),
|
|
"POST",
|
|
path.encode("ascii"),
|
|
producer=FileBodyProducer(StringIO(query_bytes)),
|
|
headers_dict={
|
|
"Content-Type": ["application/x-www-form-urlencoded"]
|
|
}
|
|
)
|
|
|
|
body = yield readBody(response)
|
|
|
|
defer.returnValue(json.loads(body))
|
|
|
|
|
|
class CaptchaServerHttpClient(MatrixHttpClient):
|
|
"""Separate HTTP client for talking to google's captcha servers"""
|
|
|
|
def _getEndpoint(self, reactor, destination):
|
|
return matrix_endpoint(reactor, destination, timeout=10)
|
|
|
|
@defer.inlineCallbacks
|
|
def post_urlencoded_get_raw(self, destination, path, accept_partial=False,
|
|
args={}):
|
|
query_bytes = urllib.urlencode(args, True)
|
|
|
|
response = yield self._create_request(
|
|
destination.encode("ascii"),
|
|
"POST",
|
|
path.encode("ascii"),
|
|
producer=FileBodyProducer(StringIO(query_bytes)),
|
|
headers_dict={
|
|
"Content-Type": ["application/x-www-form-urlencoded"]
|
|
}
|
|
)
|
|
|
|
try:
|
|
body = yield readBody(response)
|
|
defer.returnValue(body)
|
|
except PartialDownloadError as e:
|
|
if accept_partial:
|
|
defer.returnValue(e.response)
|
|
else:
|
|
raise e
|
|
|
|
def _print_ex(e):
|
|
if hasattr(e, "reasons") and e.reasons:
|
|
for ex in e.reasons:
|
|
_print_ex(ex)
|
|
else:
|
|
logger.exception(e)
|
|
|
|
|
|
class _JsonProducer(object):
|
|
""" Used by the twisted http client to create the HTTP body from json
|
|
"""
|
|
def __init__(self, jsn):
|
|
self.reset(jsn)
|
|
|
|
def reset(self, jsn):
|
|
self.body = encode_canonical_json(jsn)
|
|
self.length = len(self.body)
|
|
|
|
def startProducing(self, consumer):
|
|
consumer.write(self.body)
|
|
return defer.succeed(None)
|
|
|
|
def pauseProducing(self):
|
|
pass
|
|
|
|
def stopProducing(self):
|
|
pass
|