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May 27, 2025 21:21
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| # File uploads - Arcade Jun 11 2024 | |
| Wish the web server handles route "/upload" with handler { | |
| html { | |
| <html> | |
| <body > | |
| <span id="status">Status</span> | |
| <input id="file" type="file"/> | |
| <button id="button"> UPLOAD!! </button> | |
| </body> | |
| <script> | |
| const program = "file-upload-handler-" + ([1e7]+-1e3+-4e3+-8e3+-1e11).replace(/[018]/g, c => (c ^ crypto.getRandomValues(new Uint8Array(1))[0] & 15 >> c / 4).toString(16)); | |
| document.getElementById('button').addEventListener('click', function() { | |
| var files = document.getElementById('file').files; | |
| if (files.length > 0) { | |
| getBase64(files[0]); | |
| } | |
| }); | |
| let ws; | |
| let send; | |
| function getBase64(file) { | |
| var reader = new FileReader(); | |
| reader.readAsDataURL(file); | |
| reader.onload = function () { | |
| let base64encoding = reader.result.split(",")[1]; | |
| send(`Claim ${program} has a file ${base64encoding} with filename ${file.name}`); | |
| }; | |
| reader.onerror = function (error) { | |
| console.log('Error: ', error); | |
| }; | |
| } | |
| function wsConnect() { | |
| ws = new WebSocket(window.location.origin.replace("http", "ws") + "/ws"); | |
| send = function(s) { ws.send(s); } | |
| ws.onopen = () => { document.getElementById('status').innerHTML = "<span style=background-color:seagreen;color:white;>Connnected</span>"; }; | |
| ws.onclose = window.onbeforeunload = () => { | |
| document.getElementById('status').innerHTML = "<span style=background-color:red;color:white;>Disconnnected</span>"; | |
| send(`Commit { Claim ${program} has no files }`); | |
| setTimeout(() => { wsConnect(); }, 1000); | |
| }; | |
| ws.onerror = (err) => { | |
| document.getElementById('status').innerText = "Error"; | |
| console.error('Socket encountered error: ', err.message, 'Closing socket'); | |
| ws.close(); | |
| } | |
| ws.onmessage = (msg) => { | |
| if (msg.data.startsWith("Error:")) { | |
| const errorEl = document.getElementById("error"); | |
| if (msg.data === "Error:") { | |
| errorEl.style.backgroundColor = ""; | |
| errorEl.innerText = ""; | |
| } else { | |
| errorEl.style.backgroundColor = "#f55"; | |
| errorEl.innerText = msg.data; | |
| } | |
| } | |
| } | |
| }; | |
| wsConnect(); | |
| </script> | |
| </html> | |
| } | |
| } | |
| Wish $this is titled "File Upload Reciever" | |
| Wish $this is outlined green | |
| When /thing/ claims /thing2/ has a file /x/ with filename /fn/ { | |
| Commit {Wish $this is labelled $fn} | |
| set fp [open /home/folk/folk-uploads/$fn.base64 w] | |
| puts -nonewline $fp $x | |
| close $fp | |
| exec cat /home/folk/folk-uploads/$fn.base64 | base64 -d > /home/folk/folk-uploads/$fn | |
| exec rm /home/folk/folk-uploads/$fn.base64 | |
| } |
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