diff options
Diffstat (limited to 'synapse/http/client.py')
| -rw-r--r-- | synapse/http/client.py | 97 |
1 files changed, 68 insertions, 29 deletions
diff --git a/synapse/http/client.py b/synapse/http/client.py index 49737d55da..27e5190224 100644 --- a/synapse/http/client.py +++ b/synapse/http/client.py @@ -12,16 +12,18 @@ # 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 OpenSSL import SSL +from OpenSSL.SSL import VERIFY_NONE from synapse.api.errors import CodeMessageException from synapse.util.logcontext import preserve_context_over_fn -from syutil.jsonutil import encode_canonical_json import synapse.metrics -from twisted.internet import defer, reactor +from canonicaljson import encode_canonical_json + +from twisted.internet import defer, reactor, ssl from twisted.web.client import ( Agent, readBody, FileBodyProducer, PartialDownloadError, - HTTPConnectionPool, ) from twisted.web.http_headers import Headers @@ -56,10 +58,14 @@ class SimpleHttpClient(object): # The default context factory in Twisted 14.0.0 (which we require) is # BrowserLikePolicyForHTTPS which will do regular cert validation # 'like a browser' - pool = HTTPConnectionPool(reactor) - pool.maxPersistentPerHost = 10 - self.agent = Agent(reactor, pool=pool) - self.version_string = hs.version_string + self.agent = Agent( + reactor, + connectTimeout=15, + contextFactory=hs.get_http_client_context_factory() + ) + self.user_agent = hs.version_string + if hs.config.user_agent_suffix: + self.user_agent = "%s %s" % (self.user_agent, hs.config.user_agent_suffix,) def request(self, method, uri, *args, **kwargs): # A small wrapper around self.agent.request() so we can easily attach @@ -104,7 +110,7 @@ class SimpleHttpClient(object): uri.encode("ascii"), headers=Headers({ b"Content-Type": [b"application/x-www-form-urlencoded"], - b"User-Agent": [self.version_string], + b"User-Agent": [self.user_agent], }), bodyProducer=FileBodyProducer(StringIO(query_bytes)) ) @@ -123,7 +129,8 @@ class SimpleHttpClient(object): "POST", uri.encode("ascii"), headers=Headers({ - "Content-Type": ["application/json"] + b"Content-Type": [b"application/json"], + b"User-Agent": [self.user_agent], }), bodyProducer=FileBodyProducer(StringIO(json_str)) ) @@ -149,16 +156,40 @@ class SimpleHttpClient(object): On a non-2xx HTTP response. The response body will be used as the error message. """ + body = yield self.get_raw(uri, args) + defer.returnValue(json.loads(body)) + + @defer.inlineCallbacks + def put_json(self, uri, json_body, args={}): + """ Puts some json to the given URI. + + Args: + uri (str): The URI to request, not including query parameters + json_body (dict): The JSON to put in the HTTP body, + 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* 2xx HTTP response, with the + HTTP body as JSON. + Raises: + On a non-2xx HTTP response. + """ if len(args): query_bytes = urllib.urlencode(args, True) uri = "%s?%s" % (uri, query_bytes) + json_str = encode_canonical_json(json_body) + response = yield self.request( - "GET", + "PUT", uri.encode("ascii"), headers=Headers({ - b"User-Agent": [self.version_string], - }) + b"User-Agent": [self.user_agent], + "Content-Type": ["application/json"] + }), + bodyProducer=FileBodyProducer(StringIO(json_str)) ) body = yield preserve_context_over_fn(readBody, response) @@ -172,46 +203,39 @@ class SimpleHttpClient(object): raise CodeMessageException(response.code, body) @defer.inlineCallbacks - def put_json(self, uri, json_body, args={}): - """ Puts some json to the given URI. + def get_raw(self, uri, args={}): + """ Gets raw text from the given URI. Args: uri (str): The URI to request, not including query parameters - json_body (dict): The JSON to put in the HTTP body, 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* 2xx HTTP response, with the - HTTP body as JSON. + HTTP body at text. Raises: - On a non-2xx HTTP response. + On a non-2xx HTTP response. The response body will be used as the + error message. """ if len(args): query_bytes = urllib.urlencode(args, True) uri = "%s?%s" % (uri, query_bytes) - json_str = encode_canonical_json(json_body) - response = yield self.request( - "PUT", + "GET", uri.encode("ascii"), headers=Headers({ - b"User-Agent": [self.version_string], - "Content-Type": ["application/json"] - }), - bodyProducer=FileBodyProducer(StringIO(json_str)) + b"User-Agent": [self.user_agent], + }) ) body = yield preserve_context_over_fn(readBody, response) if 200 <= response.code < 300: - defer.returnValue(json.loads(body)) + defer.returnValue(body) else: - # NB: This is explicitly not json.loads(body)'d because the contract - # of CodeMessageException is a *string* message. Callers can always - # load it into JSON if they want. raise CodeMessageException(response.code, body) @@ -233,7 +257,7 @@ class CaptchaServerHttpClient(SimpleHttpClient): bodyProducer=FileBodyProducer(StringIO(query_bytes)), headers=Headers({ b"Content-Type": [b"application/x-www-form-urlencoded"], - b"User-Agent": [self.version_string], + b"User-Agent": [self.user_agent], }) ) @@ -251,3 +275,18 @@ def _print_ex(e): _print_ex(ex) else: logger.exception(e) + + +class InsecureInterceptableContextFactory(ssl.ContextFactory): + """ + Factory for PyOpenSSL SSL contexts which accepts any certificate for any domain. + + Do not use this since it allows an attacker to intercept your communications. + """ + + def __init__(self): + self._context = SSL.Context(SSL.SSLv23_METHOD) + self._context.set_verify(VERIFY_NONE, lambda *_: None) + + def getContext(self, hostname, port): + return self._context |