47 lines
1.4 KiB
CoffeeScript
47 lines
1.4 KiB
CoffeeScript
requestID = 0
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chrome.runtime.onMessage.addListener (request, sender, sendResponse) ->
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if request.responseType is 'arraybuffer'
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# Cross-origin image fetching. Need permission.
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chrome.permissions.contains
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origins: ['*://*/']
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, (result) ->
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if result
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ajax request, sender, sendResponse
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else
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chrome.permissions.request
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origins: ['*://*/']
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, ->
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ajax request, sender, sendResponse
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return true
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else
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# JSON fetching from non-HTTPS archive.
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ajax request, sender, sendResponse
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ajax = (request, sender, sendResponse) ->
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id = requestID
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requestID++
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sendResponse id
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xhr = new XMLHttpRequest()
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xhr.open 'GET', request.url, true
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xhr.responseType = request.responseType
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xhr.addEventListener 'load', ->
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if @readyState is @DONE && xhr.status is 200
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{response} = @
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if request.responseType is 'arraybuffer'
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response = [new Uint8Array(response)...]
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contentType = @getResponseHeader 'Content-Type'
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contentDisposition = @getResponseHeader 'Content-Disposition'
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chrome.tabs.sendMessage sender.tab.id, {id, response, contentType, contentDisposition}
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else
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chrome.tabs.sendMessage sender.tab.id, {id, error: true}
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, false
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xhr.addEventListener 'error', ->
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chrome.tabs.sendMessage sender.tab.id, {id, error: true}
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, false
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xhr.addEventListener 'abort', ->
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chrome.tabs.sendMessage sender.tab.id, {id, error: true}
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, false
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xhr.send()
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