Merge pull request #2147 from matrix-org/dbkr/http_request_propagate_error

Propagate errors sensibly from proxied IS requests
This commit is contained in:
David Baker 2017-05-03 11:23:25 +01:00 committed by GitHub
commit 60833c8978
3 changed files with 41 additions and 4 deletions

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@ -66,6 +66,17 @@ class CodeMessageException(RuntimeError):
return cs_error(self.msg)
class MatrixCodeMessageException(CodeMessageException):
"""An error from a general matrix endpoint, eg. from a proxied Matrix API call.
Attributes:
errcode (str): Matrix error code e.g 'M_FORBIDDEN'
"""
def __init__(self, code, msg, errcode=Codes.UNKNOWN):
super(MatrixCodeMessageException, self).__init__(code, msg)
self.errcode = errcode
class SynapseError(CodeMessageException):
"""A base exception type for matrix errors which have an errcode and error
message (as well as an HTTP status code).

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@ -18,7 +18,7 @@
from twisted.internet import defer
from synapse.api.errors import (
CodeMessageException
MatrixCodeMessageException, CodeMessageException
)
from ._base import BaseHandler
from synapse.util.async import run_on_reactor
@ -90,6 +90,9 @@ class IdentityHandler(BaseHandler):
),
{'sid': creds['sid'], 'client_secret': client_secret}
)
except MatrixCodeMessageException as e:
logger.info("getValidated3pid failed with Matrix error: %r", e)
raise SynapseError(e.code, e.msg, e.errcode)
except CodeMessageException as e:
data = json.loads(e.msg)
@ -159,6 +162,9 @@ class IdentityHandler(BaseHandler):
params
)
defer.returnValue(data)
except MatrixCodeMessageException as e:
logger.info("Proxied requestToken failed with Matrix error: %r", e)
raise SynapseError(e.code, e.msg, e.errcode)
except CodeMessageException as e:
logger.info("Proxied requestToken failed: %r", e)
raise e
@ -193,6 +199,9 @@ class IdentityHandler(BaseHandler):
params
)
defer.returnValue(data)
except MatrixCodeMessageException as e:
logger.info("Proxied requestToken failed with Matrix error: %r", e)
raise SynapseError(e.code, e.msg, e.errcode)
except CodeMessageException as e:
logger.info("Proxied requestToken failed: %r", e)
raise e

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@ -16,7 +16,7 @@ from OpenSSL import SSL
from OpenSSL.SSL import VERIFY_NONE
from synapse.api.errors import (
CodeMessageException, SynapseError, Codes,
CodeMessageException, MatrixCodeMessageException, SynapseError, Codes,
)
from synapse.util.logcontext import preserve_context_over_fn
import synapse.metrics
@ -145,6 +145,11 @@ class SimpleHttpClient(object):
body = yield preserve_context_over_fn(readBody, response)
if 200 <= response.code < 300:
defer.returnValue(json.loads(body))
else:
raise self._exceptionFromFailedRequest(response, body)
defer.returnValue(json.loads(body))
@defer.inlineCallbacks
@ -164,8 +169,11 @@ class SimpleHttpClient(object):
On a non-2xx HTTP response. The response body will be used as the
error message.
"""
try:
body = yield self.get_raw(uri, args)
defer.returnValue(json.loads(body))
except CodeMessageException as e:
raise self._exceptionFromFailedRequest(e.code, e.msg)
@defer.inlineCallbacks
def put_json(self, uri, json_body, args={}):
@ -246,6 +254,15 @@ class SimpleHttpClient(object):
else:
raise CodeMessageException(response.code, body)
def _exceptionFromFailedRequest(self, response, body):
try:
jsonBody = json.loads(body)
errcode = jsonBody['errcode']
error = jsonBody['error']
return MatrixCodeMessageException(response.code, error, errcode)
except (ValueError, KeyError):
return CodeMessageException(response.code, body)
# XXX: FIXME: This is horribly copy-pasted from matrixfederationclient.
# The two should be factored out.