4chan-x/src/platform/CrossOrigin.coffee

124 lines
4.4 KiB
CoffeeScript

<% if (type === 'crx') { %>
eventPageRequest = do ->
callbacks = []
chrome.runtime.onMessage.addListener (data) ->
callbacks[data.id] data
delete callbacks[data.id]
(url, responseType, cb) ->
chrome.runtime.sendMessage {url, responseType}, (id) ->
callbacks[id] = cb
<% } %>
CrossOrigin =
binary: (url, cb, headers={}) ->
# XXX https://forums.lanik.us/viewtopic.php?f=64&t=24173&p=78310
url = url.replace /^((?:https?:)?\/\/(?:\w+\.)?4c(?:ha|d)n\.org)\/adv\//, '$1//adv/'
<% if (type === 'crx') { %>
parts = url.split '/'
if parts[0] is location.protocol and parts[1] is '' and ImageHost.test(parts[2])
xhr = new XMLHttpRequest()
xhr.open 'GET', url, true
xhr.setRequestHeader key, value for key, value of headers
xhr.responseType = 'arraybuffer'
xhr.onload = ->
return cb null unless @readyState is @DONE and @status in [200, 206]
contentType = @getResponseHeader 'Content-Type'
contentDisposition = @getResponseHeader 'Content-Disposition'
cb new Uint8Array(@response), contentType, contentDisposition
xhr.onerror = xhr.onabort = ->
cb null
xhr.send()
else
eventPageRequest url, 'arraybuffer', ({response, contentType, contentDisposition, error}) ->
return cb null if error
cb new Uint8Array(response), contentType, contentDisposition
<% } %>
<% if (type === 'userscript') { %>
# Use workaround for binary data in Greasemonkey versions < 3.2, in Pale Moon for all GM versions, and in JS Blocker (Safari).
workaround = $.engine is 'gecko' and GM_info? and /^[0-2]\.|^3\.[01](?!\d)/.test(GM_info.version)
workaround or= /PaleMoon\//.test(navigator.userAgent)
workaround or= GM_info?.script?.includeJSB?
options =
method: "GET"
url: url
headers: headers
onload: (xhr) ->
if workaround
r = xhr.responseText
data = new Uint8Array r.length
i = 0
while i < r.length
data[i] = r.charCodeAt i
i++
else
data = new Uint8Array xhr.response
contentType = xhr.responseHeaders.match(/Content-Type:\s*(.*)/i)?[1]
contentDisposition = xhr.responseHeaders.match(/Content-Disposition:\s*(.*)/i)?[1]
cb data, contentType, contentDisposition
onerror: ->
cb null
onabort: ->
cb null
if workaround
options.overrideMimeType = 'text/plain; charset=x-user-defined'
else
options.responseType = 'arraybuffer'
(GM?.xmlHttpRequest or GM_xmlhttpRequest) options
<% } %>
file: (url, cb) ->
CrossOrigin.binary url, (data, contentType, contentDisposition) ->
return cb null unless data?
name = url.match(/([^\/]+)\/*$/)?[1]
mime = contentType?.match(/[^;]*/)[0] or 'application/octet-stream'
match =
contentDisposition?.match(/\bfilename\s*=\s*"((\\"|[^"])+)"/i)?[1] or
contentType?.match(/\bname\s*=\s*"((\\"|[^"])+)"/i)?[1]
if match
name = match.replace /\\"/g, '"'
if GM_info?.script?.includeJSB?
# Content type comes back as 'text/plain; charset=x-user-defined'; guess from filename instead.
mime = QR.typeFromExtension[name.match(/[^.]*$/)[0].toLowerCase()] or 'application/octet-stream'
blob = new Blob([data], {type: mime})
blob.name = name
cb blob
json: do ->
callbacks = {}
responses = {}
(url, cb) ->
<% if (type === 'crx') { %>
if /^https:\/\//.test(url) or location.protocol is 'http:'
return $.cache url, (-> cb @response), responseType: 'json'
<% } %>
if responses[url]
cb responses[url]
return
if callbacks[url]
callbacks[url].push cb
return
callbacks[url] = [cb]
<% if (type === 'userscript') { %>
(GM?.xmlHttpRequest or GM_xmlhttpRequest)
method: "GET"
url: url+''
onload: (xhr) ->
response = JSON.parse xhr.responseText
cb response for cb in callbacks[url]
delete callbacks[url]
responses[url] = response
onerror: ->
delete callbacks[url]
onabort: ->
delete callbacks[url]
<% } %>
<% if (type === 'crx') { %>
eventPageRequest url, 'json', ({response, error}) ->
if error
delete callbacks[url]
else
cb response for cb in callbacks[url]
delete callbacks[url]
responses[url] = response
<% } %>