Created
October 27, 2014 12:09
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Upload files with SHA1 hash calculation in client side.
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| <html> | |
| <head> | |
| <script type="text/javascript"> | |
| output = null; | |
| function initApplication() | |
| { | |
| output = document.getElementById("outputPre"); | |
| } | |
| function sendRequest() | |
| { | |
| filesInput = document.getElementById("filesInput"); | |
| senderWorker = new Worker("upload_files.js"); | |
| senderWorker.postMessage(filesInput.files); | |
| senderWorker.onmessage = function(e) | |
| { | |
| output.innerHTML = e.data; | |
| } | |
| } | |
| </script> | |
| </head> | |
| <body onload="initApplication()"> | |
| <input type="file" name="files[]" id="filesInput" multiple="" directory="" webkitdirectory="" mozdirectory=""> | |
| <button onclick= "sendRequest()">Send</button> | |
| <pre id="outputPre"></pre> | |
| </body> | |
| </html> |
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| #! /usr/bin/env python | |
| import os | |
| import sys | |
| import cgi | |
| import tempfile | |
| import hashlib | |
| print "Content-type: text/html\n\n" | |
| form = cgi.FieldStorage() | |
| data = form['file'].file.read() | |
| m = hashlib.sha1() | |
| m.update(data) | |
| filename = m.hexdigest() | |
| path = '/tmp/FILES/'+str(filename) | |
| f = open(path, "w") | |
| f.write(data) | |
| f.close() |
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| importScripts("rusha.js"); | |
| self.addEventListener('message', function(e) | |
| { | |
| var files = e.data; | |
| console.log(new Date()); | |
| for (i = 0; i < files.length; i++) | |
| { | |
| postMessage(files[i].webkitRelativePath); | |
| var reader = new FileReaderSync(); | |
| var content = reader.readAsArrayBuffer(files[i]); | |
| var hash = (new Rusha()).digestFromBuffer(content); | |
| console.log(files[i].webkitRelativePath+" "+hash); | |
| var formData = new FormData(); | |
| formData.append("file", files[i]); | |
| xmlhttp = new XMLHttpRequest(); | |
| xmlhttp.onreadystatechange=function() | |
| { | |
| if (xmlhttp.readyState==4 && xmlhttp.status==200) | |
| { | |
| //postMessage(files[i].webkitRelativePath); | |
| } | |
| } | |
| xmlhttp.open("POST", "upload.py", false); | |
| xmlhttp.send(formData); | |
| } | |
| console.log(new Date()); | |
| postMessage("DONE"); | |
| }, false); |
@duhaime yes it is. rusha.js is a pure javascript implementation of SHA1.
I mean the client runs a hash that says where the file will be stored, but we're not uploading the hash, we're just logging it on the client
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This sha1 calculation is not clientside...