archives/snowflake
2
0
Fork 0
mirror of https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake.git synced 2025-10-13 20:11:19 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

move disable check to snowflakeIsDisabled

Browse source
This commit is contained in:
Serene H 2017-03-01 18:51:24 -08:00
parent 3fe10f3e7c
commit 6d2b0ac420
2 changed files with 30 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

5
proxy/broker.coffee
View file

@ -18,8 +18,9 @@ class Broker
clients: 0
# When interacting with the Broker, snowflake must generate a unique session
# ID so the Broker can keep track of which signalling channel it's speaking
# to.
# ID so the Broker can keep track of each proxy's signalling channels.
# On construction, this Broker object does not do anything until
# |getClientOffer| is called.
constructor: (@url) ->
@clients = 0
# Ensure url has the right protocol + trailing slash.

40
proxy/snowflake.coffee
View file

@ -4,7 +4,9 @@ A Coffeescript WebRTC snowflake proxy
Uses WebRTC from the client, and Websocket to the server.
Assume that the webrtc client plugin is always the offerer, in which case
this must always act as the answerer.
this proxy must always act as the answerer.
TODO: More documentation
###
# General snowflake proxy constants.
@ -70,16 +72,18 @@ class Snowflake
RATE_LIMIT_HISTORY)
@retries = 0
# TODO: Should potentially fetch from broker later.
# Set the target relay address spec, which is expected to be a websocket
# relay.
# Set the target relay address spec, which is expected to be websocket.
# TODO: Should potentially fetch the target from broker later, or modify
# entirely for the Tor-independent version.
setRelayAddr: (relayAddr) ->
@relayAddr = relayAddr
log 'Using ' + relayAddr.host + ':' + relayAddr.port + ' as Relay.'
log 'Input offer from the snowflake client:' if COPY_PASTE_ENABLED
return true
# Initialize WebRTC PeerConnection
# Initialize WebRTC PeerConnection, which requires beginning the signalling
# process. If in copy paste mode, the user will need to copy and paste the SDP
# blobs. Otherwise, |pollBroker| automatically arranges signalling.
beginWebRTC: ->
@state = MODE.WEBRTC_CONNECTING
for i in [1..CONNECTIONS_PER_CLIENT]
@ -204,12 +208,22 @@ Signalling =
snowflake.receiveOffer pair, msg
# Log to both console and UI if applicable.
# Requires that the snowflake and UI objects are hooked up in order to
# log to console.
log = (msg) ->
console.log 'Snowflake: ' + msg
snowflake.ui?.log msg
snowflake?.ui?.log msg
dbg = (msg) -> log msg if DEBUG or snowflake.ui?.debug
snowflakeIsDisabled = ->
cookies = Parse.cookie document.cookie
# Do nothing if snowflake has not been opted in by user.
if cookies[COOKIE_NAME] != '1'
log 'Not opted-in. Please click the badge to change options.'
return true
return false
###
Entry point.
###
@ -217,21 +231,21 @@ init = (isNode) ->
# Hook up to the debug UI if available.
ui = if isNode then null else new UI()
silenceNotifications = Params.getBool(query, 'silent', false)
# Establish connectivity information with the Broker.
# Retrieve connectivity information for the Broker and
# initialize Snowflake contexts.
brokerUrl = Params.getString(query, 'broker', DEFAULT_BROKER)
broker = new Broker brokerUrl
snowflake = new Snowflake broker, ui
cookies = Parse.cookie document.cookie
# Do nothing if snowflake has not been opted in.
if cookies[COOKIE_NAME] != "1"
log 'Not activate. Please click the badge to change options.'
log '== snowflake proxy =='
if snowflakeIsDisabled()
# Do not activate the proxy if any number of conditions are true.
log 'Currently not active.'
return
log '== snowflake proxy =='
# Otherwise, begin setting up WebRTC and acting as a proxy.
log 'Copy-Paste mode detected.' if COPY_PASTE_ENABLED
dbg 'Contacting Broker at ' + broker.url if not COPY_PASTE_ENABLED
relayAddr = Params.getAddress(query, 'relay', DEFAULT_RELAY)
snowflake.setRelayAddr relayAddr
snowflake.beginWebRTC()