Restore support for noscript fallback version of Recaptcha v1. Can be activated through new Force Noscript Captcha for v1 option.

Effectively reverts 0feb6637cf0d4e72eb5470734153c4c549c4fcce, 909f70c6e61eabe064a8374ce32c1a35d564a09f.

package.json

@@ -38,7 +38,8 @@
       "https://www.google.com/recaptcha/api2/frame?*&k=6Ldp2bsSAAAAAAJ5uyx_lx34lJeEpTLVkP5k04qc*",
       "https://www.google.com/recaptcha/api2/frame?*&k=887877714&*",
       "https://www.google.com/recaptcha/api2/bframe?*&k=6Ldp2bsSAAAAAAJ5uyx_lx34lJeEpTLVkP5k04qc*",
-      "*://www.google.com/recaptcha/api/fallback?k=6Ldp2bsSAAAAAAJ5uyx_lx34lJeEpTLVkP5k04qc*"
+      "*://www.google.com/recaptcha/api/fallback?k=6Ldp2bsSAAAAAAJ5uyx_lx34lJeEpTLVkP5k04qc*",
+      "*://www.google.com/recaptcha/api/noscript?k=6Ldp2bsSAAAAAAJ5uyx_lx34lJeEpTLVkP5k04qc*"
     ],
     "exclude_matches": [
       "*://www.4chan.org/pass",

src/Posting/Captcha.noscript.coffee

@@ -0,0 +1,203 @@
+Captcha.noscript =
+  lifetime: 30 * $.MINUTE
+
+  init: ->
+    return if d.cookie.indexOf('pass_enabled=1') >= 0
+    return if not (@isEnabled = !!$ '#g-recaptcha, #captchaContainerAlt')
+
+    container = $.el 'div',
+      className: 'captcha-img'
+      title: 'Reload reCAPTCHA'
+
+    input = $.el 'input',
+      className: 'captcha-input field'
+      title: 'Verification'
+      autocomplete: 'off'
+      spellcheck: false
+    @nodes = {container, input}
+
+    $.on input, 'blur',  QR.focusout
+    $.on input, 'focus', QR.focusin
+    $.on input, 'keydown', @keydown.bind @
+    # Disable auto-posting if you're typing the captcha during the last 5 seconds of the cooldown.
+    $.on input, 'input', -> QR.posts[0].preventAutoPost() unless Captcha.cache.getCount()
+    $.on @nodes.container, 'click', =>
+      @reload()
+      @nodes.input.focus()
+
+    @conn = new Connection null, 'https://www.google.com',
+      challenge: @load.bind @
+      token:     @save.bind @
+      error:     @error.bind @
+
+    $.addClass QR.nodes.el, 'has-captcha', 'captcha-v1', 'noscript-captcha'
+    $.after QR.nodes.com.parentNode, [container, input]
+
+    Captcha.cache.init()
+    $.on d, 'CaptchaCount', @count.bind(@)
+
+    @beforeSetup()
+    @setup()
+
+  initFrame: ->
+    conn = new Connection window.parent, 'https://boards.4chan.org',
+      response: (response) ->
+        $.id('recaptcha_response_field').value = response
+        # The form has a field named 'submit'
+        HTMLFormElement.prototype.submit.call $('form')
+    if location.hash is '#response'
+      conn.send
+        token: $('textarea')?.value
+        error: $('.recaptcha_input_area')?.textContent.replace(/:$/, '')
+    return unless img = $ 'img'
+    $('form').action = '#response'
+    cb = ->
+      canvas = $.el 'canvas'
+      canvas.width  = img.width
+      canvas.height = img.height
+      canvas.getContext('2d').drawImage(img, 0, 0)
+      conn.send {challenge: canvas.toDataURL()}
+    if img.complete
+      cb()
+    else
+      $.on img, 'load', cb
+
+  timers: {}
+
+  iframeURL: ->
+    url = 'https://www.google.com/recaptcha/api/noscript?k=<%= meta.recaptchaKey %>'
+    if lang = Conf['captchaLanguage'].trim()
+      url += "&hl=#{encodeURIComponent lang}"
+    url
+
+  cb:
+    focus: -> QR.captcha.setup false, true
+
+  beforeSetup: ->
+    {container, input} = @nodes
+    container.hidden = true
+    input.value = ''
+    input.placeholder = 'Focus to load reCAPTCHA'
+    @count()
+    $.on input, 'focus click', @cb.focus
+
+  moreNeeded: ->
+
+  setup: (focus, force) ->
+    return unless @isEnabled and (force or Captcha.cache.needed())
+    if !@nodes.iframe
+      @nodes.iframe = $.el 'iframe',
+        id: 'qr-captcha-iframe'
+        src: @iframeURL()
+      $.add QR.nodes.el, @nodes.iframe
+      @conn.target = @nodes.iframe
+    else if !@occupied or force
+      @nodes.iframe.src = @iframeURL()
+    @occupied = true
+    @nodes.input.focus() if focus
+
+  afterSetup: ->
+    {container, input} = @nodes
+    container.hidden = false
+    input.placeholder = 'Verification'
+    @count()
+    $.off input, 'focus click', @cb.focus
+
+    if QR.nodes.el.getBoundingClientRect().bottom > doc.clientHeight
+      QR.nodes.el.style.top    = ''
+      QR.nodes.el.style.bottom = '0px'
+
+  destroy: ->
+    return unless @isEnabled
+    $.rm @nodes.img
+    delete @nodes.img
+    $.rm @nodes.iframe
+    delete @nodes.iframe
+    delete @occupied
+    @beforeSetup()
+
+  getOne: (isReply) ->
+    if (captcha = Captcha.cache.getOne isReply)
+      captcha
+    else if /\S/.test @nodes.input.value
+      (cb) =>
+        @submitCB = cb
+        @sendResponse()
+    else
+      null
+
+  sendResponse: ->
+    response = @nodes.input.value
+    if /\S/.test response
+      @conn.send {response}
+
+  save: (token) ->
+    delete @occupied
+    @nodes.input.value = ''
+    captcha =
+      challenge: token
+      response:  'manual_challenge'
+      timeout:   @timeout
+    if @submitCB
+      @submitCB captcha
+      delete @submitCB
+      if Captcha.cache.needed() then @reload() else @destroy()
+    else
+      Captcha.cache.save captcha
+      @reload()
+
+  error: (message) ->
+    @occupied = true
+    @nodes.input.value = ''
+    if @submitCB
+      @submitCB()
+      delete @submitCB
+    QR.error "Captcha Error: #{message}"
+
+  load: (src) ->
+    {container, input, img} = @nodes
+    @occupied = true
+    @timeout = Date.now() + @lifetime
+    unless img
+      img = @nodes.img = new Image()
+      $.one img, 'load', @afterSetup.bind @
+      $.on img, 'load', -> @hidden = false
+      $.add container, img
+    img.src = src
+    input.value = ''
+    clearTimeout @timers.expire
+    @timers.expire = setTimeout @expire.bind(@), @lifetime
+
+  count: ->
+    count = Captcha.cache.getCount()
+    placeholder = @nodes.input.placeholder.replace /\ \(.*\)$/, ''
+    placeholder += switch count
+      when 0
+        if placeholder is 'Verification' then ' (Shift + Enter to cache)' else ''
+      when 1
+        ' (1 cached captcha)'
+      else
+        " (#{count} cached captchas)"
+    @nodes.input.placeholder = placeholder
+    @nodes.input.alt = count # For XTRM RICE.
+
+  expire: ->
+    return unless @nodes.iframe
+    if not d.hidden and (Captcha.cache.needed() or d.activeElement is @nodes.input)
+      @reload()
+    else
+      @destroy()
+
+  reload: ->
+    @nodes.iframe.src = @iframeURL()
+    @occupied = true
+    @nodes.img?.hidden = true
+
+  keydown: (e) ->
+    if e.keyCode is 8 and not @nodes.input.value
+      if @nodes.iframe then @reload() else @setup()
+    else if e.keyCode is 13 and e.shiftKey
+      @sendResponse()
+    else
+      return
+    e.preventDefault()

src/Posting/QR.coffee

@@ -28,7 +28,11 @@ QR =
 
     return if g.VIEW is 'archive'
 
-    version = if Conf[if g.VIEW is 'thread' then 'Use Recaptcha v1' else 'Use Recaptcha v1 on Index'] and Main.jsEnabled then 'v1' else 'v2'
+    version = if Conf[if g.VIEW is 'thread' then 'Use Recaptcha v1' else 'Use Recaptcha v1 on Index'] and (Main.jsEnabled or location.protocol is 'https:')
+      noscript = location.protocol is 'https:' and (Conf['Force Noscript Captcha for v1'] or not Main.jsEnabled)
+      if noscript then 'noscript' else 'v1'
+    else
+      'v2'
     @captcha = Captcha[version]
 
     $.on d, '4chanXInitFinished', -> BoardConfig.ready QR.initReady
@@ -680,15 +684,32 @@ QR =
           QR.req.progress = "#{Math.round e.loaded / e.total * 100}%"
           QR.status()
 
-    if captcha?
-      QR.currentCaptcha = captcha
-      if captcha.challenge?
-        extra.form.append 'recaptcha_challenge_field', captcha.challenge
-        extra.form.append 'recaptcha_response_field', captcha.response
-      else
-        extra.form.append 'g-recaptcha-response', captcha.response
-    QR.req = $.ajax "https://sys.4chan.org/#{g.BOARD}/post", options, extra
-    QR.req.progress = '...'
+    cb = (response) ->
+      if response?
+        QR.currentCaptcha = response
+        if response.challenge?
+          extra.form.append 'recaptcha_challenge_field', response.challenge
+          extra.form.append 'recaptcha_response_field', response.response
+        else
+          extra.form.append 'g-recaptcha-response', response.response
+      QR.req = $.ajax "https://sys.4chan.org/#{g.BOARD}/post", options, extra
+      QR.req.progress = '...'
+
+    if typeof captcha is 'function'
+      # Wait for captcha to be verified before submitting post.
+      QR.req =
+        progress: '...'
+        abort: -> cb = null
+      captcha (response) ->
+        if response
+          cb? response
+        else
+          delete QR.req
+          post.unlock()
+          QR.cooldown.auto = !!Captcha.cache.getCount()
+          QR.status()
+    else
+      cb captcha
 
     # Starting to upload might take some time.
     # Provide some feedback that we're starting to submit.

src/config/Config.coffee

@@ -509,6 +509,10 @@ Config =
         false
         'Use the non-Javascript fallback captcha even if Javascript is enabled (Recaptcha v2 only).'
       ]
+      'Force Noscript Captcha for v1': [
+        false
+        'Force the non-Javascript fallback captcha for Recaptcha v1. Currently only works on HTTPS.'
+      ]
       'Pass Link': [
         false
         'Add a 4chan Pass login link to the bottom of the page.'

src/main/Main.coffee

@@ -8,6 +8,9 @@ Main =
     window['<%= meta.name %> antidup'] = true
 
     if location.hostname is 'www.google.com'
+      if location.pathname is '/recaptcha/api/noscript'
+        $.ready -> Captcha.noscript.initFrame()
+        return
       $.get 'Captcha Fixes', true, ({'Captcha Fixes': enabled}) ->
         if enabled
           $.ready -> Captcha.fixes.init()