Add get_raw method to SimpleHttpClient, use this in CAS auth rather than requests

2 files changed, 44 insertions, 24 deletions

diff --git a/synapse/http/client.py b/synapse/http/client.py
index 79c529291f..ca642a7a06 100644
--- a/synapse/http/client.py
+++ b/synapse/http/client.py
@@ -160,16 +160,40 @@ 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.user_agent],
-            })
+                b"User-Agent": [self.version_string],
+                "Content-Type": ["application/json"]
+            }),
+            bodyProducer=FileBodyProducer(StringIO(json_str))
         )
 
         body = yield preserve_context_over_fn(readBody, response)
@@ -183,46 +207,39 @@ 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.user_agent],
-                "Content-Type": ["application/json"]
-            }),
-            bodyProducer=FileBodyProducer(StringIO(json_str))
+                b"User-Agent": [self.version_string],
+            })
         )
 
         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)
 
 
diff --git a/synapse/rest/client/v1/login.py b/synapse/rest/client/v1/login.py
index 4de5f19591..f5cd6a1960 100644
--- a/synapse/rest/client/v1/login.py
+++ b/synapse/rest/client/v1/login.py
@@ -16,6 +16,7 @@
 from twisted.internet import defer
 
 from synapse.api.errors import SynapseError, LoginError, Codes
+from synapse.http.client import SimpleHttpClient
 from synapse.types import UserID
 from base import ClientV1RestServlet, client_path_pattern
 
@@ -28,7 +29,6 @@ from saml2 import config
 from saml2.client import Saml2Client
 
 import xml.etree.ElementTree as ET
-import requests
 
 
 logger = logging.getLogger(__name__)
@@ -79,13 +79,16 @@ class LoginRestServlet(ClientV1RestServlet):
                 defer.returnValue((200, result))
             elif self.cas_enabled and (login_submission["type"] ==
                                        LoginRestServlet.CAS_TYPE):
-                url = "%s/proxyValidate" % (self.cas_server_url)
-                parameters = {
+                # TODO: get this from the homeserver rather than creating a new one for
+                # each request
+                http_client = SimpleHttpClient(self.hs)
+                uri = "%s/proxyValidate" % (self.cas_server_url,)
+                args = {
                     "ticket": login_submission["ticket"],
                     "service": login_submission["service"]
                 }
-                response = requests.get(url, verify=False, params=parameters)
-                result = yield self.do_cas_login(response.text)
+                body = yield http_client.get_raw(uri, args)
+                result = yield self.do_cas_login(body)
                 defer.returnValue(result)
             else:
                 raise SynapseError(400, "Bad login type.")