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| author | Richard van der Hoff <1389908+richvdh@users.noreply.github.com> | 2018-05-16 07:19:18 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-05-16 07:19:18 +0100 |
| commit | 8030a825c8ea375652a856929d29d7ae28096cc1 (patch) | |
| tree | fd1a3c6d59b793fb5ceca6d08187e12753bcaac1 /synapse/http | |
| parent | Merge pull request #3201 from matrix-org/dbkr/leave_rooms_on_deactivate (diff) | |
| parent | ConsentResource to gather policy consent from users (diff) | |
| download | synapse-8030a825c8ea375652a856929d29d7ae28096cc1.tar.xz | |
Merge pull request #3213 from matrix-org/rav/consent_handler
ConsentResource to gather policy consent from users
Diffstat (limited to 'synapse/http')
| -rw-r--r-- | synapse/http/server.py | 76 |
1 files changed, 74 insertions, 2 deletions
diff --git a/synapse/http/server.py b/synapse/http/server.py index b6e2ae14a2..faf700851a 100644 --- a/synapse/http/server.py +++ b/synapse/http/server.py @@ -13,7 +13,8 @@ # 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 cgi +from six.moves import http_client from synapse.api.errors import ( cs_exception, SynapseError, CodeMessageException, UnrecognizedRequestError, Codes @@ -44,6 +45,18 @@ import simplejson logger = logging.getLogger(__name__) +HTML_ERROR_TEMPLATE = """<!DOCTYPE html> +<html lang=en> + <head> + <meta charset="utf-8"> + <title>Error {code}</title> + </head> + <body> + <p>{msg}</p> + </body> +</html> +""" + def wrap_json_request_handler(h): """Wraps a request handler method with exception handling. @@ -102,6 +115,65 @@ def wrap_json_request_handler(h): return wrap_request_handler_with_logging(wrapped_request_handler) +def wrap_html_request_handler(h): + """Wraps a request handler method with exception handling. + + Also adds logging as per wrap_request_handler_with_logging. + + The handler method must have a signature of "handle_foo(self, request)", + where "self" must have a "clock" attribute (and "request" must be a + SynapseRequest). + """ + def wrapped_request_handler(self, request): + d = defer.maybeDeferred(h, self, request) + d.addErrback(_return_html_error, request) + return d + + return wrap_request_handler_with_logging(wrapped_request_handler) + + +def _return_html_error(f, request): + """Sends an HTML error page corresponding to the given failure + + Args: + f (twisted.python.failure.Failure): + request (twisted.web.iweb.IRequest): + """ + if f.check(CodeMessageException): + cme = f.value + code = cme.code + msg = cme.msg + + if isinstance(cme, SynapseError): + logger.info( + "%s SynapseError: %s - %s", request, code, msg + ) + else: + logger.error( + "Failed handle request %r: %s", + request, + f.getTraceback().rstrip(), + ) + else: + code = http_client.INTERNAL_SERVER_ERROR + msg = "Internal server error" + + logger.error( + "Failed handle request %r: %s", + request, + f.getTraceback().rstrip(), + ) + + body = HTML_ERROR_TEMPLATE.format( + code=code, msg=cgi.escape(msg), + ).encode("utf-8") + request.setResponseCode(code) + request.setHeader(b"Content-Type", b"text/html; charset=utf-8") + request.setHeader(b"Content-Length", b"%i" % (len(body),)) + request.write(body) + finish_request(request) + + def wrap_request_handler_with_logging(h): """Wraps a request handler to provide logging and metrics @@ -132,7 +204,7 @@ def wrap_request_handler_with_logging(h): servlet_name = self.__class__.__name__ with request.processing(servlet_name): with PreserveLoggingContext(request_context): - d = h(self, request) + d = defer.maybeDeferred(h, self, request) # record the arrival of the request *after* # dispatching to the handler, so that the handler |