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Merge branch 'develop' into pushers

Browse source 
Conflicts:
	synapse/api/errors.py
	synapse/server.py
	synapse/storage/__init__.py
This commit is contained in:
David Baker 2014-12-18 15:15:22 +00:00
commit b56730bb6e
99 changed files with 4650 additions and 2176 deletions
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212
synapse/http/content_repository.py
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@ -1,212 +0,0 @@
# -*- 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 .server import respond_with_json_bytes
from synapse.util.stringutils import random_string
from synapse.api.errors import (
cs_exception, SynapseError, CodeMessageException, Codes, cs_error
)
from twisted.protocols.basic import FileSender
from twisted.web import server, resource
from twisted.internet import defer
import base64
import json
import logging
import os
import re
logger = logging.getLogger(__name__)
class ContentRepoResource(resource.Resource):
"""Provides file uploading and downloading.
Uploads are POSTed to wherever this Resource is linked to. This resource
returns a "content token" which can be used to GET this content again. The
token is typically a path, but it may not be. Tokens can expire, be
one-time uses, etc.
In this case, the token is a path to the file and contains 3 interesting
sections:
- User ID base64d (for namespacing content to each user)
- random 24 char string
- Content type base64d (so we can return it when clients GET it)
"""
isLeaf = True
def __init__(self, hs, directory, auth, external_addr):
resource.Resource.__init__(self)
self.hs = hs
self.directory = directory
self.auth = auth
self.external_addr = external_addr.rstrip('/')
self.max_upload_size = hs.config.max_upload_size
if not os.path.isdir(self.directory):
os.mkdir(self.directory)
logger.info("ContentRepoResource : Created %s directory.",
self.directory)
@defer.inlineCallbacks
def map_request_to_name(self, request):
# auth the user
auth_user = yield self.auth.get_user_by_req(request)
# namespace all file uploads on the user
prefix = base64.urlsafe_b64encode(
auth_user.to_string()
).replace('=', '')
# use a random string for the main portion
main_part = random_string(24)
# suffix with a file extension if we can make one. This is nice to
# provide a hint to clients on the file information. We will also reuse
# this info to spit back the content type to the client.
suffix = ""
if request.requestHeaders.hasHeader("Content-Type"):
content_type = request.requestHeaders.getRawHeaders(
"Content-Type")[0]
suffix = "." + base64.urlsafe_b64encode(content_type)
if (content_type.split("/")[0].lower() in
["image", "video", "audio"]):
file_ext = content_type.split("/")[-1]
# be a little paranoid and only allow a-z
file_ext = re.sub("[^a-z]", "", file_ext)
suffix += "." + file_ext
file_name = prefix + main_part + suffix
file_path = os.path.join(self.directory, file_name)
logger.info("User %s is uploading a file to path %s",
auth_user.to_string(),
file_path)
# keep trying to make a non-clashing file, with a sensible max attempts
attempts = 0
while os.path.exists(file_path):
main_part = random_string(24)
file_name = prefix + main_part + suffix
file_path = os.path.join(self.directory, file_name)
attempts += 1
if attempts > 25: # really? Really?
raise SynapseError(500, "Unable to create file.")
defer.returnValue(file_path)
def render_GET(self, request):
# no auth here on purpose, to allow anyone to view, even across home
# servers.
# TODO: A little crude here, we could do this better.
filename = request.path.split('/')[-1]
# be paranoid
filename = re.sub("[^0-9A-z.-_]", "", filename)
file_path = self.directory + "/" + filename
logger.debug("Searching for %s", file_path)
if os.path.isfile(file_path):
# filename has the content type
base64_contentype = filename.split(".")[1]
content_type = base64.urlsafe_b64decode(base64_contentype)
logger.info("Sending file %s", file_path)
f = open(file_path, 'rb')
request.setHeader('Content-Type', content_type)
# cache for at least a day.
# XXX: we might want to turn this off for data we don't want to
# recommend caching as it's sensitive or private - or at least
# select private. don't bother setting Expires as all our matrix
# clients are smart enough to be happy with Cache-Control (right?)
request.setHeader(
"Cache-Control", "public,max-age=86400,s-maxage=86400"
)
d = FileSender().beginFileTransfer(f, request)
# after the file has been sent, clean up and finish the request
def cbFinished(ignored):
f.close()
request.finish()
d.addCallback(cbFinished)
else:
respond_with_json_bytes(
request,
404,
json.dumps(cs_error("Not found", code=Codes.NOT_FOUND)),
send_cors=True)
return server.NOT_DONE_YET
def render_POST(self, request):
self._async_render(request)
return server.NOT_DONE_YET
def render_OPTIONS(self, request):
respond_with_json_bytes(request, 200, {}, send_cors=True)
return server.NOT_DONE_YET
@defer.inlineCallbacks
def _async_render(self, request):
try:
# TODO: The checks here are a bit late. The content will have
# already been uploaded to a tmp file at this point
content_length = request.getHeader("Content-Length")
if content_length is None:
raise SynapseError(
msg="Request must specify a Content-Length", code=400
)
if int(content_length) > self.max_upload_size:
raise SynapseError(
msg="Upload request body is too large",
code=413,
)
fname = yield self.map_request_to_name(request)
# TODO I have a suspicious feeling this is just going to block
with open(fname, "wb") as f:
f.write(request.content.read())
# FIXME (erikj): These should use constants.
file_name = os.path.basename(fname)
# FIXME: we can't assume what the repo's public mounted path is
# ...plus self-signed SSL won't work to remote clients anyway
# ...and we can't assume that it's SSL anyway, as we might want to
# serve it via the non-SSL listener...
url = "%s/_matrix/content/%s" % (
self.external_addr, file_name
)
respond_with_json_bytes(request, 200,
json.dumps({"content_token": url}),
send_cors=True)
except CodeMessageException as e:
logger.exception(e)
respond_with_json_bytes(request, e.code,
json.dumps(cs_exception(e)))
except Exception as e:
logger.error("Failed to store file: %s" % e)
respond_with_json_bytes(
request,
500,
json.dumps({"error": "Internal server error"}),
send_cors=True)

123
synapse/http/matrixfederationclient.py
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@ -14,10 +14,11 @@
# limitations under the License.
from twisted.internet import defer, reactor
from twisted.internet import defer, reactor, protocol
from twisted.internet.error import DNSLookupError
from twisted.web.client import readBody, _AgentBase, _URI
from twisted.web.http_headers import Headers
from twisted.web._newclient import ResponseDone
from synapse.http.endpoint import matrix_federation_endpoint
from synapse.util.async import sleep
@ -25,7 +26,7 @@ from synapse.util.logcontext import PreserveLoggingContext
from syutil.jsonutil import encode_canonical_json
from synapse.api.errors import CodeMessageException, SynapseError
from synapse.api.errors import CodeMessageException, SynapseError, Codes
from syutil.crypto.jsonsign import sign_json
@ -89,8 +90,8 @@ class MatrixFederationHttpClient(object):
("", "", path_bytes, param_bytes, query_bytes, "",)
)
logger.debug("Sending request to %s: %s %s",
destination, method, url_bytes)
logger.info("Sending request to %s: %s %s",
destination, method, url_bytes)
logger.debug(
"Types: %s",
@ -101,6 +102,8 @@ class MatrixFederationHttpClient(object):
]
)
# XXX: Would be much nicer to retry only at the transaction-layer
# (once we have reliable transactions in place)
retries_left = 5
endpoint = self._getEndpoint(reactor, destination)
@ -127,11 +130,20 @@ class MatrixFederationHttpClient(object):
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)
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")
logger.warn(
"Sending request failed to %s: %s %s : %s",
destination,
method,
url_bytes,
e
)
_print_ex(e)
if retries_left:
@ -140,15 +152,21 @@ class MatrixFederationHttpClient(object):
else:
raise
logger.info(
"Received response %d %s for %s: %s %s",
response.code,
response.phrase,
destination,
method,
url_bytes
)
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
)
@ -227,7 +245,7 @@ class MatrixFederationHttpClient(object):
@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
""" GETs some json from the given host homeserver and path
Args:
destination (str): The remote server to send the HTTP request
@ -235,9 +253,6 @@ class MatrixFederationHttpClient(object):
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.
@ -272,6 +287,52 @@ class MatrixFederationHttpClient(object):
defer.returnValue(json.loads(body))
@defer.inlineCallbacks
def get_file(self, destination, path, output_stream, args={},
retry_on_dns_fail=True, max_size=None):
"""GETs a file from a given homeserver
Args:
destination (str): The remote server to send the HTTP request to.
path (str): The HTTP path to GET.
output_stream (file): File to write the response body to.
args (dict): Optional dictionary used to create the query string.
Returns:
A (int,dict) tuple of the file length and a dict of the response
headers.
"""
encoded_args = {}
for k, vs in args.items():
if isinstance(vs, basestring):
vs = [vs]
encoded_args[k] = [v.encode("UTF-8") for v in vs]
query_bytes = urllib.urlencode(encoded_args, True)
logger.debug("Query bytes: %s Retry DNS: %s", args, retry_on_dns_fail)
def body_callback(method, url_bytes, headers_dict):
self.sign_request(destination, method, url_bytes, headers_dict)
return None
response = yield self._create_request(
destination.encode("ascii"),
"GET",
path.encode("ascii"),
query_bytes=query_bytes,
body_callback=body_callback,
retry_on_dns_fail=retry_on_dns_fail
)
headers = dict(response.headers.getAllRawHeaders())
try:
length = yield _readBodyToFile(response, output_stream, max_size)
except:
logger.exception("Failed to download body")
raise
defer.returnValue((length, headers))
def _getEndpoint(self, reactor, destination):
return matrix_federation_endpoint(
reactor, destination, timeout=10,
@ -279,12 +340,44 @@ class MatrixFederationHttpClient(object):
)
class _ReadBodyToFileProtocol(protocol.Protocol):
def __init__(self, stream, deferred, max_size):
self.stream = stream
self.deferred = deferred
self.length = 0
self.max_size = max_size
def dataReceived(self, data):
self.stream.write(data)
self.length += len(data)
if self.max_size is not None and self.length >= self.max_size:
self.deferred.errback(SynapseError(
502,
"Requested file is too large > %r bytes" % (self.max_size,),
Codes.TOO_LARGE,
))
self.deferred = defer.Deferred()
self.transport.loseConnection()
def connectionLost(self, reason):
if reason.check(ResponseDone):
self.deferred.callback(self.length)
else:
self.deferred.errback(reason)
def _readBodyToFile(response, stream, max_size):
d = defer.Deferred()
response.deliverBody(_ReadBodyToFileProtocol(stream, d, max_size))
return d
def _print_ex(e):
if hasattr(e, "reasons") and e.reasons:
for ex in e.reasons:
_print_ex(ex)
else:
logger.exception(e)
logger.warn(e)
class _JsonProducer(object):

29
synapse/http/server.py
View file

@ -29,6 +29,7 @@ from twisted.web.util import redirectTo
import collections
import logging
import urllib
logger = logging.getLogger(__name__)
@ -122,9 +123,14 @@ class JsonResource(HttpServer, resource.Resource):
# We found a match! Trigger callback and then return the
# returned response. We pass both the request and any
# matched groups from the regex to the callback.
args = [
urllib.unquote(u).decode("UTF-8") for u in m.groups()
]
code, response = yield path_entry.callback(
request,
*m.groups()
*args
)
self._send_response(request, code, response)
@ -166,14 +172,10 @@ class JsonResource(HttpServer, resource.Resource):
request)
return
if not self._request_user_agent_is_curl(request):
json_bytes = encode_canonical_json(response_json_object)
else:
json_bytes = encode_pretty_printed_json(response_json_object)
# TODO: Only enable CORS for the requests that need it.
respond_with_json_bytes(request, code, json_bytes, send_cors=True,
response_code_message=response_code_message)
respond_with_json(request, code, response_json_object, send_cors=True,
response_code_message=response_code_message,
pretty_print=self._request_user_agent_is_curl)
@staticmethod
def _request_user_agent_is_curl(request):
@ -202,6 +204,17 @@ class RootRedirect(resource.Resource):
return resource.Resource.getChild(self, name, request)
def respond_with_json(request, code, json_object, send_cors=False,
response_code_message=None, pretty_print=False):
if not pretty_print:
json_bytes = encode_pretty_printed_json(json_object)
else:
json_bytes = encode_canonical_json(json_object)
return respond_with_json_bytes(request, code, json_bytes, send_cors,
response_code_message=response_code_message)
def respond_with_json_bytes(request, code, json_bytes, send_cors=False,
response_code_message=None):
"""Sends encoded JSON in response to the given request.