| 1 | import test from "node:test" ; |
| 2 | import assert from "node:assert/strict" ; |
| 3 | import fs from "node:fs" ; |
| 4 | import vm from "node:vm" ; |
| 5 | |
| 6 | class Node { |
| 7 | constructor(tag = "" ) { this.tagName = tag.toUpperCase(); this.children = []; this.attributes = {}; this.listeners = {}; this.textContent = "" ; this.dataset = {}; } |
| 8 | append(...nodes) { for (const node of nodes) if (node && typeof node !== "string" ) { this.children.push(node); node.parentNode = this; } } |
| 9 | remove() { this.parentNode?.children.splice(this.parentNode.children.indexOf(this), 1); } |
| 10 | setAttribute(name, value) { this.attributes[name] = String(value); } |
| 11 | getAttribute(name) { return this.attributes[name] ?? null; } |
| 12 | hasAttribute(name) { return Object.hasOwn(this.attributes, name); } |
| 13 | addEventListener(name, fn) { (this.listeners[name] ||= []).push(fn); } |
| 14 | click() {} |
| 15 | replaceChildren(...nodes) { this.children = []; this.append(...nodes); } |
| 16 | querySelector(selector) { return this.querySelectorAll(selector)[0] || null; } |
| 17 | querySelectorAll(selector) { |
| 18 | const selectors = selector.split("," ).map(value => value.trim()); |
| 19 | const match = node => selectors.some(value => { |
| 20 | const attr = value.match(/^([^[]+)?\[([^=\]]+)(?:="([^" ]+)")?\]$/); |
| 21 | if (attr) return (!attr[1] || node.tagName === attr[1].toUpperCase()) && node.hasAttribute(attr[2]) && (attr[3] === undefined || node.getAttribute(attr[2]) === attr[3]); |
| 22 | return node.tagName === value.toUpperCase(); |
| 23 | }); |
| 24 | const found = []; |
| 25 | const walk = node => { for (const child of node.children) { if (match(child)) found.push(child); walk(child); } }; |
| 26 | walk(this); return found; |
| 27 | } |
| 28 | set innerHTML(value) { |
| 29 | this.children = []; |
| 30 | const stack = [this]; |
| 31 | for (const token of value.match(/<[^>]+>|[^<]+/g) || []) { |
| 32 | if (!token.startsWith("<" )) continue; |
| 33 | if (/^<\//.test(token)) { stack.pop(); continue; } |
| 34 | const match = token.match(/^<([\w-]+)([^>]*)>/); if (!match) continue; |
| 35 | const child = new Node(match[1]); |
| 36 | for (const [, name, quote, attrValue] of match[2].matchAll(/([\w-]+)(?:=(['"])(.*?)\2)?/g)) child.setAttribute(name, attrValue ?? ""); |
| 37 | stack.at(-1).append(child); |
| 38 | if (!/^(input|br|meta|img)$/.test(match[1])) stack.push(child); |
| 39 | } |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | const setup = () => { |
| 44 | const document = new Node("document" ); |
| 45 | document.readyState = "complete" ; |
| 46 | document.documentElement = new Node("html" ); |
| 47 | document.body = new Node("body" ); |
| 48 | document.createElement = name => new Node(name); |
| 49 | document.addEventListener = () => {}; |
| 50 | document.dispatchEvent = () => {}; |
| 51 | document.querySelectorAll = () => []; |
| 52 | const customElements = {registry: {}, define(name, ctor) { this.registry[name] = ctor; }}; |
| 53 | const location = {href: "https://relay.test/file?hash=cipher" , origin: "https://relay.test" , pathname: "/file" , hash: "" }; |
| 54 | const window = {document, customElements, location, addEventListener: () => {}, tiny: {util: {}, blossom: {encryption: {}}}}; |
| 55 | class HTMLElement extends Node {} |
| 56 | Object.assign(globalThis, {window, document, customElements, HTMLElement, location, Blob, URL, CustomEvent: class {}}); |
| 57 | globalThis.tiny = window.tiny; |
| 58 | vm.runInThisContext(fs.readFileSync("tinyclient/tiny.js" , "utf8" )); |
| 59 | window.tiny.localPath = path => "/r/test" + path; |
| 60 | window.tiny.require = async () => {}; |
| 61 | window.tiny.sha256hex = async () => "cipher" ; |
| 62 | window.tiny.blossom.encryption.decryptCHK = async () => new TextEncoder().encode("video bytes" ); |
| 63 | vm.runInThisContext(fs.readFileSync("tinyclient/components.js" , "utf8" )); |
| 64 | return {FileTools: customElements.registry["file-tools" ], window}; |
| 65 | }; |
| 66 | |
| 67 | const makeTool = (FileTools, window, type = "video/mp4" ) => { |
| 68 | window.location.hash = "#enc=chk-v1&key=secret&name=clip.mp4&type=" + encodeURIComponent(type); |
| 69 | const tool = new FileTools(); |
| 70 | tool.setAttribute("hash" , "cipher" ); |
| 71 | tool.setAttribute("type" , "application/octet-stream" ); |
| 72 | return tool; |
| 73 | }; |
| 74 | |
| 75 | test("encrypted MP4 renders a local video preview and replaces it on retry" , async () => { |
| 76 | const {FileTools, window} = setup(); |
| 77 | const revoked = []; |
| 78 | const originalCreate = URL.createObjectURL, originalRevoke = URL.revokeObjectURL; |
| 79 | URL.createObjectURL = blob => "blob:preview-" + blob.type + "-" + Math.random(); |
| 80 | URL.revokeObjectURL = url => revoked.push(url); |
| 81 | const originalFetch = globalThis.fetch; |
| 82 | globalThis.fetch = async () => new Response(new Uint8Array([1, 2, 3])); |
| 83 | try { |
| 84 | const tool = makeTool(FileTools, window); tool.connectedCallback(); |
| 85 | await new Promise(resolve => setTimeout(resolve, 0)); |
| 86 | const first = tool.querySelector("[data-decrypted-preview]" ); |
| 87 | assert.ok(first); |
| 88 | assert.equal(first.querySelector("video" ).controls, true); |
| 89 | assert.equal(first.querySelector("video" ).preload, "metadata" ); |
| 90 | assert.equal(first.querySelector("video" ).src.startsWith("blob:preview-video/mp4-" ), true); |
| 91 | await tool.decryptFromFragment(); |
| 92 | assert.equal(tool.querySelectorAll("[data-decrypted-preview]" ).length, 1); |
| 93 | assert.equal(revoked.length, 1, "retry releases the previous object URL" ); |
| 94 | tool.disconnectedCallback(); |
| 95 | assert.equal(revoked.length, 2, "disconnect releases the current object URL" ); |
| 96 | } finally { |
| 97 | globalThis.fetch = originalFetch; |
| 98 | URL.createObjectURL = originalCreate; |
| 99 | URL.revokeObjectURL = originalRevoke; |
| 100 | } |
| 101 | }); |
| 102 | |
| 103 | test("HTML and SVG render as inert bounded source text" , async () => { |
| 104 | for (const type of ["image/svg+xml" , "text/html" ]) { |
| 105 | const {FileTools, window} = setup(); |
| 106 | const originalFetch = globalThis.fetch; |
| 107 | globalThis.fetch = async () => new Response(new Uint8Array([1, 2, 3])); |
| 108 | try { |
| 109 | const tool = makeTool(FileTools, window, type); tool.connectedCallback(); |
| 110 | await tool.decryptFromFragment(); |
| 111 | const preview = tool.querySelector("[data-decrypted-preview]" ); |
| 112 | assert.ok(preview, type + " should have a source preview" ); |
| 113 | assert.equal(preview.querySelector("pre" ).textContent, "video bytes" ); |
| 114 | assert.equal(preview.querySelector("img" ), null); |
| 115 | assert.equal(preview.querySelector("iframe" ), null); |
| 116 | assert.ok(tool.querySelector("a[download]" ) || tool.querySelector("a" )); |
| 117 | } finally { globalThis.fetch = originalFetch; } |
| 118 | } |
| 119 | }); |
| 120 | |
| 121 | test("plain text preview is bounded while download remains complete" , async () => { |
| 122 | const {FileTools, window} = setup(); |
| 123 | const originalFetch = globalThis.fetch; |
| 124 | const originalDecrypt = window.tiny.blossom.encryption.decryptCHK; |
| 125 | const source = "A" .repeat(256 * 1024 + 20); |
| 126 | window.tiny.blossom.encryption.decryptCHK = async () => new TextEncoder().encode(source); |
| 127 | globalThis.fetch = async () => new Response(new Uint8Array([1, 2, 3])); |
| 128 | try { |
| 129 | const tool = makeTool(FileTools, window, "text/plain" ); tool.connectedCallback(); |
| 130 | await new Promise(resolve => setTimeout(resolve, 0)); |
| 131 | const pre = tool.querySelector("pre" ); |
| 132 | assert.ok(pre); |
| 133 | assert.equal(pre.textContent.startsWith("A" .repeat(256 * 1024)), true); |
| 134 | assert.match(pre.textContent, /Preview truncated/); |
| 135 | const downloaded = await (await originalFetch(tool.downloadURL)).text(); |
| 136 | assert.equal(downloaded, source); |
| 137 | } finally { |
| 138 | window.tiny.blossom.encryption.decryptCHK = originalDecrypt; |
| 139 | globalThis.fetch = originalFetch; |
| 140 | } |
| 141 | }); |