diff options
| -rw-r--r-- | crates/chat-server/src/main.rs | 24 | ||||
| -rw-r--r-- | crates/chat-server/src/maintenance.rs | 61 | ||||
| -rw-r--r-- | crates/chat-server/src/store.rs | 13 | ||||
| -rw-r--r-- | crates/chat-server/tests/browser.mjs | 90 | ||||
| -rw-r--r-- | crates/chat-server/web/app.js | 140 | ||||
| -rw-r--r-- | crates/chat-server/web/index.html | 19 | ||||
| -rw-r--r-- | crates/chat-server/web/style.css | 15 | ||||
| -rw-r--r-- | docs/CHAT-APPLICATION.txt | 76 | ||||
| -rw-r--r-- | src/main.rs | 24 |
9 files changed, 383 insertions, 79 deletions
diff --git a/crates/chat-server/src/main.rs b/crates/chat-server/src/main.rs index 6c7f4e1..c17a7f6 100644 --- a/crates/chat-server/src/main.rs +++ b/crates/chat-server/src/main.rs @@ -16,6 +16,7 @@ #![doc = "Local experimental chat server with ciphertext-only durable storage."] mod http; +mod maintenance; mod service; mod store; @@ -33,8 +34,16 @@ struct Arguments { root: PathBuf, #[arg(long, default_value = "127.0.0.1:9080")] bind: SocketAddr, - #[arg(long)] + #[arg(long, conflicts_with_all = ["reset_owner", "owner_fingerprint", "snapshot"])] init: bool, + #[arg(long, value_name = "FINGERPRINT", conflicts_with_all = ["owner_fingerprint", "snapshot"], help = "Permanently clear the matching owner registration and all chat history after key loss")] + reset_owner: Option<String>, + #[arg( + long, + conflicts_with = "snapshot", + help = "Print the registered owner's public fingerprint" + )] + owner_fingerprint: bool, #[arg(long)] snapshot: Option<PathBuf>, } @@ -76,11 +85,22 @@ async fn run(arguments: Arguments) -> Result<()> { std::fs::create_dir_all(&data)?; std::fs::set_permissions(&data, std::os::unix::fs::PermissionsExt::from_mode(0o700))?; let database = data.join("chat.sqlite"); - let store = store::Store::open(&database)?; + let _server_lock = if arguments.snapshot.is_none() && !arguments.owner_fingerprint { + Some(maintenance::lock(&data)?) + } else { + None + }; + let mut store = store::Store::open(&database)?; std::fs::set_permissions( &database, std::os::unix::fs::PermissionsExt::from_mode(0o600), )?; + if arguments.owner_fingerprint { + return maintenance::fingerprint(&store); + } + if let Some(expected) = arguments.reset_owner { + return maintenance::reset(&mut store, &expected, arguments.bind); + } if let Some(destination) = arguments.snapshot { store.snapshot(&destination)?; std::fs::set_permissions( diff --git a/crates/chat-server/src/maintenance.rs b/crates/chat-server/src/maintenance.rs new file mode 100644 index 0000000..eac689d --- /dev/null +++ b/crates/chat-server/src/maintenance.rs @@ -0,0 +1,61 @@ +// Copyright (C) 2026 Doan Luu Duc Tai <doan@luuduct.ai> +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU Affero General Public License as +// published by the Free Software Foundation, either version 3 of the +// License, or (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Affero General Public License for more details. +// +// You should have received a copy of the GNU Affero General Public License +// along with this program. If not, see <https://www.gnu.org/licenses/>. + +use crate::store::Store; +use anyhow::{Context, Result, ensure}; +use std::fs::{File, OpenOptions}; +use std::io::Write; +use std::net::{SocketAddr, TcpListener}; +use std::os::unix::fs::OpenOptionsExt; +use std::path::Path; + +pub(crate) fn lock(directory: &Path) -> Result<File> { + let file = OpenOptions::new() + .read(true) + .write(true) + .create(true) + .truncate(false) + .mode(0o600) + .open(directory.join("server.lock"))?; + file.try_lock().context( + "Chat is already running. Stop it before starting another server or resetting the owner.", + )?; + Ok(file) +} + +pub(crate) fn fingerprint(store: &Store) -> Result<()> { + let certificate = store.owner()?.context("No owner identity is registered")?; + writeln!( + std::io::stdout().lock(), + "{}", + stack_chat_crypto::public_identity(&certificate)? + )?; + Ok(()) +} + +pub(crate) fn reset(store: &mut Store, expected: &str, address: SocketAddr) -> Result<()> { + ensure!( + address.ip().is_loopback(), + "Reset must use the local chat address" + ); + let _port = + TcpListener::bind(address).context("Stop the chat server before resetting its owner")?; + store.reset_owner(expected)?; + writeln!( + std::io::stdout().lock(), + "Owner registration and chat history cleared. Restart chat and use OWNER SETUP to create a new owner file. Existing backup archives were not changed." + )?; + Ok(()) +} diff --git a/crates/chat-server/src/store.rs b/crates/chat-server/src/store.rs index fce3bb3..0e09de7 100644 --- a/crates/chat-server/src/store.rs +++ b/crates/chat-server/src/store.rs @@ -45,6 +45,19 @@ impl Store { Ok(()) } + pub(crate) fn reset_owner(&mut self, expected: &str) -> Result<()> { + let owner = self.owner()?.context("No owner identity is registered")?; + let fingerprint = stack_chat_crypto::public_identity(&owner)?; + ensure!( + expected.len() == 64 && expected.eq_ignore_ascii_case(&fingerprint), + "Owner fingerprint does not match; no data was cleared" + ); + let transaction = self.connection.transaction()?; + transaction.execute_batch("DELETE FROM messages; DELETE FROM conversations; DELETE FROM metadata WHERE key='owner'; DELETE FROM sqlite_sequence WHERE name='messages';")?; + transaction.commit()?; + Ok(()) + } + pub(crate) fn register(&self, id: &str, cert: &str) -> Result<()> { if self.connection.query_row( "SELECT EXISTS(SELECT 1 FROM conversations WHERE id=?1)", diff --git a/crates/chat-server/tests/browser.mjs b/crates/chat-server/tests/browser.mjs index 08c5c88..e12c3da 100644 --- a/crates/chat-server/tests/browser.mjs +++ b/crates/chat-server/tests/browser.mjs @@ -19,7 +19,7 @@ import { mkdtemp, readFile, writeFile, symlink, rm, mkdir, rename } from 'node:f import { tmpdir } from 'node:os'; import { resolve, join } from 'node:path'; import { randomBytes } from 'node:crypto'; -import { spawn, execFileSync } from 'node:child_process'; +import { spawn, execFileSync, spawnSync } from 'node:child_process'; import { chromium, firefox } from '../../../.tools/browser/node_modules/playwright/index.mjs'; const root = await mkdtemp(join(tmpdir(), 'stack-chat-e2e-')); @@ -78,8 +78,10 @@ async function page() { }); return page; } +async function waitEntry(page) { await page.locator('#create-choice').waitFor({state:'visible'}); } async function waitStatus(page, text) { await page.waitForFunction(value => document.getElementById('status').textContent.includes(value), text); } async function create(page, name, owner = false) { + const previousAuthentications = bodies.filter(body => body.op === 'authenticate').length; if (owner) await page.fill('#setup-token', token); else await page.click('#create-choice'); await page.fill('#name', name); await page.fill('#new-password', password); @@ -90,7 +92,7 @@ async function create(page, name, owner = false) { const bytes = await readFile(await download.path()); await waitStatus(page,'Reopen your downloaded'); assert.equal(await page.locator('#chat').isVisible(), false); - assert.equal(bodies.some(body => body.op === 'authenticate'), owner ? false : true); + assert.equal(bodies.filter(body => body.op === 'authenticate').length,previousAuthentications); return {name:'identity.chat',mimeType:'application/octet-stream',buffer:bytes}; } async function unlock(page, file, phrase = password) { @@ -126,17 +128,24 @@ async function verifyLibreJS() { try { if (libre) await verifyLibreJS(); const owner = await page(); - const response = await owner.goto(origin + '/#setup'); + const response = await owner.goto(origin); + await owner.locator('#owner-choice').waitFor({state:'visible'}); + await owner.click('#owner-choice'); assert.match(response.headers()['cache-control'], /no-store/); assert.match(response.headers()['content-security-policy'], /frame-ancestors 'none'/); - await waitStatus(owner,'Owner setup.'); + await owner.locator('#setup-token').waitFor({state:'visible'}); + assert.match(await owner.locator('#create-title').textContent(),/owner only/); + assert.equal(await owner.locator('.introduction h1').count(),0); + assert.equal(await owner.locator('.libre-badge a[rel=jslicense]').count(),1); + assert.equal(await owner.locator('.source-footer a[rel=jslicense]').count(),0); + assert.equal(await owner.evaluate(() => document.scrollingElement === document.documentElement),true); const ownerFile = await create(owner,'Doan',true); await unlock(owner,ownerFile); await waitStatus(owner,'Unlocked in memory only'); assert.match(await owner.locator('#who').textContent(), /OWNER/); const visitor = await page(); await visitor.goto(origin); - await waitStatus(visitor,'Choose CREATE'); + await waitEntry(visitor); const visitorFile = await create(visitor,'A friend'); assert.ok(!visitorFile.buffer.toString().includes('A friend')); await unlock(visitor,visitorFile,'wrong-but-long-password'); @@ -182,7 +191,7 @@ try { await waitStatus(visitor,'Encrypted message stored'); assert.match(await visitor.locator('#counts').textContent(),/Total: 3/); await visitor.reload(); - await waitStatus(visitor,'Choose CREATE'); + await waitEntry(visitor); assert.equal(await visitor.locator('#messages li').count(),0); assert.equal(await visitor.locator('#file').inputValue(),''); assert.equal(await visitor.locator('#password').inputValue(),''); @@ -209,7 +218,7 @@ try { await rename(snapshot,join(root,'var/data/chat/chat.sqlite')); await launchServer(); await visitor.reload(); - await waitStatus(visitor,'Choose CREATE'); + await waitEntry(visitor); await visitor.click('#open-choice'); await unlock(visitor,visitorFile); await waitStatus(visitor,'Unlocked in memory only'); @@ -219,9 +228,11 @@ try { await waitStatus(visitor,'Selected history decrypted'); assert.equal(await visitor.locator('#messages li').count(),3); assert.ok((await visitor.locator('#messages p').allTextContents()).includes(malicious)); - await owner.reload(); - await waitStatus(owner,'Choose CREATE'); - await owner.click('#open-choice'); + await owner.goto(origin); + await waitEntry(owner); + await owner.click('#owner-choice'); + await owner.locator('#owner-access').waitFor({state:'visible'}); + await owner.click('#owner-open'); await unlock(owner,ownerFile); await waitStatus(owner,'Unlocked in memory only'); assert.match(await owner.locator('#who').textContent(),/OWNER/); @@ -236,6 +247,30 @@ try { assert.equal(await visitor.locator('#messages li').count(),0); assert.equal(await visitor.locator('#password').inputValue(),''); assert.equal(await visitor.locator('#chat').isVisible(),false); + await visitor.click('#open-choice'); + await unlock(visitor,visitorFile); + await waitStatus(visitor,'Unlocked in memory only'); + for (let index = 1; index <= 51; index += 1) { + await visitor.fill('#text',`Batch fixture ${index}`); + await visitor.click('#send-form button'); + await waitStatus(visitor,'Encrypted message stored'); + } + assert.equal(await visitor.locator('#history-count').getAttribute('max'),'54'); + assert.equal(await visitor.locator('#history-range').textContent(),'Latest messages (0-54)'); + const historyStart = bodies.length; + await visitor.fill('#history-count','54'); + await visitor.click('#history-form button'); + await waitStatus(visitor,'Selected history decrypted'); + assert.equal(await visitor.locator('#messages li').count(),54); + const batches = bodies.slice(historyStart).filter(body => body.op === 'history' && body.count > 0).map(body => body.count); + assert.deepEqual(batches,[50,4]); + assert.equal(await visitor.locator('#messages p').last().textContent(),'Batch fixture 51'); + assert.equal(await visitor.locator('#older').isVisible(),false); + await visitor.fill('#history-count','0'); + await visitor.click('#history-form button'); + await waitStatus(visitor,'No message history loaded'); + assert.equal(await visitor.locator('#messages li').count(),0); + await visitor.click('#lock'); await storageEmpty(visitor); await storageEmpty(owner); assert.deepEqual(external,[]); @@ -245,9 +280,40 @@ try { assert.ok(!JSON.stringify(body).includes(malicious)); } const database = await readFile(join(root,'var/data/chat/chat.sqlite')); - for (const plaintext of [malicious,'A friend','Reply from owner','Safe retry after a lost response',password]) assert.ok(!database.includes(Buffer.from(plaintext)),`Plaintext persisted: ${plaintext}`); + for (const plaintext of [malicious,'A friend','Reply from owner','Safe retry after a lost response','Batch fixture 51',password]) assert.ok(!database.includes(Buffer.from(plaintext)),`Plaintext persisted: ${plaintext}`); const blocked = await visitor.request.post(origin + '/api',{data:{op:'config'},headers:{Origin:'https://foreign.invalid'}}); assert.equal(blocked.status(),403); + const administrative = (...args) => spawnSync(resolve('target/debug/stack-chat-server'),['--root',root,'--bind',new URL(origin).host,...args],{encoding:'utf8'}); + const registered = administrative('--owner-fingerprint'); + assert.equal(registered.status,0); + const fingerprint = registered.stdout.trim(); + assert.match(fingerprint,/^[0-9A-F]{64}$/); + const runningReset = administrative('--reset-owner',fingerprint); + assert.notEqual(runningReset.status,0,'Reset must refuse while the server runs'); + await stopServer(); + const mismatch = administrative('--reset-owner','0'.repeat(64)); + assert.notEqual(mismatch.status,0,'Wrong fingerprint must not reset the owner'); + assert.equal(administrative('--owner-fingerprint').stdout.trim(),fingerprint); + const preservedEnv = await readFile(join(root,'.env')); + const reset = administrative('--reset-owner',fingerprint); + assert.equal(reset.status,0); + assert.deepEqual(await readFile(join(root,'.env')),preservedEnv); + assert.notEqual(administrative('--owner-fingerprint').status,0); + await launchServer(); + await owner.goto(origin); + await owner.locator('#owner-choice').waitFor({state:'visible'}); + await owner.click('#owner-choice'); + const replacement = await create(owner,'Replacement owner',true); + await unlock(owner,replacement); + await waitStatus(owner,'Unlocked in memory only'); + assert.equal(await owner.locator('#conversations button').count(),0,'Reset must clear conversations'); + assert.notEqual(administrative('--owner-fingerprint').stdout.trim(),fingerprint); + await visitor.goto(origin); + await waitEntry(visitor); + await visitor.click('#open-choice'); + await unlock(visitor,visitorFile); + await waitStatus(visitor,'Pinned owner key differs'); + assert.equal(await visitor.locator('#chat').isVisible(),false); assert.equal(serverErrors,''); if (process.env.CHAT_SCREENSHOT) await visitor.screenshot({path:resolve('.tools/chat-preview.png'),fullPage:true}); if (libre) { @@ -256,7 +322,7 @@ try { assert.ok(addon?.active,'LibreJS must actually be active'); console.log(`LibreJS ${addon.version} is active in Firefox; complete chat workflow succeeded.`); } - console.log('PASS: real browser/WASI owner setup, protected file recovery, wrong password, visitor/owner encrypted messages, safe text rendering, N=0, counts, pagination, retry deduplication, reload, live SQLite snapshot restoration and both identity recoveries, explicit lock, origin rejection, no browser storage or external requests, no private uploads or database plaintext.'); + console.log('PASS: real browser/WASI owner setup, protected file recovery, wrong password, visitor/owner encrypted messages, safe text rendering, N=0, counts, dynamic 0-to-total selection and 50-row batching, pagination, retry deduplication, reload, live SQLite snapshot restoration and both identity recoveries, explicit lock, owner setup/access, backend-only reset guards and fresh registration, old key-pin rejection, origin rejection, no browser storage or external requests, no private uploads or database plaintext.'); } finally { clearTimeout(deadline); await browser.close(); diff --git a/crates/chat-server/web/app.js b/crates/chat-server/web/app.js index c06116b..3c97f66 100644 --- a/crates/chat-server/web/app.js +++ b/crates/chat-server/web/app.js @@ -86,12 +86,15 @@ function clearState() { pendingSend = undefined; setupToken = undefined; before = 0; + element('history-count').max = '0'; + element('history-range').textContent = 'Latest messages (0-0)'; for (const input of document.querySelectorAll('input,textarea')) { if (input.id === 'history-count') input.value = '0'; else input.value = ''; } for (const id of ['messages', 'conversations', 'who', 'fingerprint', 'counts', 'thread-name', 'conversation-fingerprint']) element(id).replaceChildren(); - for (const id of ['create', 'unlock', 'chat', 'thread', 'inbox', 'older', 'retry']) show(id, false); + for (const id of ['create', 'unlock', 'chat', 'thread', 'inbox', 'older', 'retry', 'owner-access']) show(id, false); show('entry', Boolean(config?.owner)); + show('owner-entry'); status('Locked. Select your file and enter its password to return.'); } @@ -127,7 +130,7 @@ function download(file) { async function createIdentity() { const password = element('new-password').value; if (password !== element('confirm-password').value) throw new Error('Passwords do not match'); - if (!config.owner && location.hash !== '#setup') throw new Error('Owner setup is required first'); + if (!config.owner && element('setup-label').hidden) throw new Error('Owner setup is required first'); setupToken = !config.owner ? element('setup-token').value : undefined; status('Generating your purpose-specific identity and protecting its file...'); const result = await cryptoOperation({ op: 'create', origin: location.origin, name: element('name').value, password, owner: config.owner || '' }); @@ -160,6 +163,8 @@ async function unlockIdentity() { setupToken = undefined; config = await api({ op: 'config' }); show('entry', false); + show('owner-entry', false); + show('owner-access', false); show('unlock', false); show('chat'); element('who').textContent = `${identity.name} [${session.owner === true ? 'OWNER' : 'VISITOR'}]`; @@ -176,7 +181,7 @@ async function unlockIdentity() { element('conversation-fingerprint').textContent = `Conversation: ${session.id}`; show('thread'); element('thread-name').textContent = 'You <-> Doan'; - await history(0); + await loadHistory(0); } status('Unlocked in memory only. No history loaded automatically. Lock or leave to forget this session.'); } @@ -217,7 +222,7 @@ async function inbox() { name = profile.name; } element('thread-name').textContent = `Doan <-> ${name}`; - await history(0); + await loadHistory(0); status('Conversation opened. Choose how many messages to load.'); } catch (error) { status(error.message); } finally { if (generation === current) busy = false; } @@ -227,42 +232,74 @@ async function inbox() { } function counters(conversation) { + if (!Number.isSafeInteger(conversation.total) || conversation.total < 0 || conversation.total > 10000) throw new Error('Invalid conversation count'); + element('history-count').max = String(conversation.total); + element('history-range').textContent = `Latest messages (0-${conversation.total})`; const sent = session.owner ? conversation.owner_sent : conversation.visitor_sent; const received = session.owner ? conversation.visitor_sent : conversation.owner_sent; element('counts').textContent = `Total: ${conversation.total} | Sent: ${sent} | Received: ${received}`; } -async function history(count, cursor = 0) { +async function renderHistoryBatch(messages) { + const requests = messages.map(message => ({ sender: message.sender === selected.id ? selected.public : config.owner, ciphertext: message.ciphertext })); + const decrypted = await cryptoOperation(protectRequest('decrypt_batch', { messages: requests })); + for (let index = 0; index < messages.length; index += 1) { + const message = messages[index]; + const item = document.createElement('li'); + const label = document.createElement('small'); + label.textContent = `#${message.seq} / ${message.sender === session.id ? 'YOU' : 'THEM'}`; + const text = document.createElement('p'); + try { + const entry = decrypted.messages[index]; + if (entry.signer !== message.sender) throw new Error('Sender fingerprint mismatch'); + if (entry.error) throw new Error('Invalid ciphertext or signature'); + const payload = checkedPayload(entry.payload, 'message', selected.id, message.sender); + if (payload.id !== message.id || typeof payload.text !== 'string' || new TextEncoder().encode(payload.text).length > 8192) throw new Error('Message binding mismatch'); + text.textContent = payload.text; + } catch { text.textContent = '[Message rejected: invalid ciphertext, signature, or conversation binding.]'; } + item.append(label, text); + element('messages').prepend(item); + } +} + +async function refreshCounts() { + const conversation = selected.id; + const result = await api({ op: 'history', conversation, count: 0, before: 0 }); + if (selected?.id === conversation) counters(result.conversation); + return result.conversation; +} + +async function loadHistory(count, cursor = 0) { if (!selected) throw new Error('Choose a conversation first'); - if (!Number.isSafeInteger(count) || count < 0 || count > 50) throw new Error('Choose 0 to 50 messages'); - const result = await api({ op: 'history', conversation: selected.id, count, before: cursor }); - counters(result.conversation); - if (!cursor) element('messages').replaceChildren(); - if (result.messages.length) { - status('Decrypting and verifying selected messages locally...'); - const requests = result.messages.map(message => ({ sender: message.sender === selected.id ? selected.public : config.owner, ciphertext: message.ciphertext })); - const decrypted = await cryptoOperation(protectRequest('decrypt_batch', { messages: requests })); - for (let index = 0; index < result.messages.length; index += 1) { - const message = result.messages[index]; - const item = document.createElement('li'); - const label = document.createElement('small'); - label.textContent = `#${message.seq} / ${message.sender === session.id ? 'YOU' : 'THEM'}`; - const text = document.createElement('p'); - try { - const entry = decrypted.messages[index]; - if (entry.signer !== message.sender) throw new Error('Sender fingerprint mismatch'); - if (entry.error) throw new Error('Invalid ciphertext or signature'); - const payload = checkedPayload(entry.payload, 'message', selected.id, message.sender); - if (payload.id !== message.id || typeof payload.text !== 'string' || new TextEncoder().encode(payload.text).length > 8192) throw new Error('Message binding mismatch'); - text.textContent = payload.text; - } catch { text.textContent = '[Message rejected: invalid ciphertext, signature, or conversation binding.]'; } - item.append(label, text); - element('messages').prepend(item); - } - before = Math.min(...result.messages.map(message => message.seq)); + const conversation = await refreshCounts(); + if (!Number.isSafeInteger(count) || count < 0 || count > conversation.total) throw new Error(`Choose 0 to ${conversation.total} messages`); + if (!cursor) { element('messages').replaceChildren(); before = 0; } + if (count === 0) { + element('history-count').value = '0'; + show('older', false); + status('No message history loaded.'); + return; + } + let remaining = count; + let next = cursor; + let exhausted = false; + while (remaining > 0) { + const size = Math.min(50, remaining); + const result = await api({ op: 'history', conversation: selected.id, count: size, before: next }); + counters(result.conversation); + if (!Array.isArray(result.messages) || result.messages.length > size) throw new Error('Invalid history response'); + if (!result.messages.length) { exhausted = true; break; } + const sequence = Math.min(...result.messages.map(message => message.seq)); + if (!Number.isSafeInteger(sequence) || sequence <= 0 || (next > 0 && sequence >= next)) throw new Error('Invalid history cursor'); + status(`Decrypting and verifying selected messages locally (${count - remaining + result.messages.length}/${count})...`); + await renderHistoryBatch(result.messages); + remaining -= result.messages.length; + next = sequence; + before = next; + if (result.messages.length < size) { exhausted = true; break; } } - show('older', count > 0 && result.messages.length === count); - status(count === 0 ? 'No message history loaded.' : 'Selected history decrypted and verified locally.'); + show('older', !exhausted && element('messages').children.length < Number(element('history-count').max)); + status('Selected history decrypted and verified locally.'); } async function submitPending() { @@ -289,15 +326,32 @@ async function send() { await submitPending(); } -action('create-choice', async () => { show('entry', false); show('create'); status('Create a purpose-specific protected identity file.'); }); -action('open-choice', async () => { show('entry', false); show('unlock'); status('Select your saved identity file.'); }); +function ownerSetup() { + show('entry', false); + show('owner-entry', false); + show('unlock', false); + show('create', !config.owner); + show('owner-access', Boolean(config.owner)); + show('setup-label', !config.owner); + element('create-title').textContent = 'Create the owner identity (owner only)'; + status(''); +} + +action('create-choice', async () => { show('entry', false); show('owner-entry', false); show('setup-label', false); element('create-title').textContent = 'Create a new chat'; show('create'); status(''); }); +action('open-choice', async () => { show('entry', false); show('owner-entry', false); show('unlock'); status(''); }); +action('owner-choice', async () => { window.history.replaceState(null, '', '#setup'); ownerSetup(); }); +action('owner-open', async () => { show('owner-access', false); show('unlock'); status(''); }); action('create-form', createIdentity); action('unlock-form', unlockIdentity); -action('history-form', () => history(Number(element('history-count').value))); +element('history-count').addEventListener('focus', () => { + const current = generation; + if (session && selected && !busy) refreshCounts().catch(error => { if (current === generation) status(error.message); }); +}); +action('history-form', () => loadHistory(Number(element('history-count').value))); action('send-form', send); action('retry', submitPending); action('refresh-inbox', inbox); -action('older', () => history(Number(element('history-count').value), before)); +action('older', () => loadHistory(Number(element('history-count').value), before)); element('lock').addEventListener('click', () => { if (session) api({ op: 'lock' }).catch(() => {}); clearState(); }); window.addEventListener('pagehide', clearState); window.addEventListener('pageshow', event => { if (event.persisted) clearState(); }); @@ -310,14 +364,10 @@ async function start() { await wasm; config = await api({ op: 'config' }); if (config.origin !== location.origin) throw new Error('Server origin mismatch'); - if (!config.owner) { - if (location.hash === '#setup') { - show('create'); - show('setup-label'); - element('create-title').textContent = 'Create the dedicated owner identity'; - status('Owner setup. Keep this identity separate from your canonical OpenPGP key.'); - } else { status('Owner setup is not complete. Please return later.'); } - } else { show('entry'); status('Choose CREATE NEW CHAT or OPEN CHAT FILE.'); } + show('owner-entry'); + show('entry', Boolean(config.owner)); + status(''); + if (location.hash === '#setup') ownerSetup(); } start().catch(error => status(error.message)); diff --git a/crates/chat-server/web/index.html b/crates/chat-server/web/index.html index c240b85..7c2fe8b 100644 --- a/crates/chat-server/web/index.html +++ b/crates/chat-server/web/index.html @@ -25,7 +25,9 @@ along with this program. If not, see <https://www.gnu.org/licenses/>. </head> <body> <main> -<div class="libre-badge">[ <a href="https://www.gnu.org/software/librejs/" aria-describedby="js-warning">GNU LibreJS-compliant</a><span id="js-warning" role="tooltip">LibreJS compliance concerns software freedom, not a guarantee of privacy or security. Review the source code, dependencies, and scripts delivered to your browser. Server-delivered code can change between visits; free software can still track users or behave maliciously.</span> ]</div> +<h1 class="sr-only">Message Me</h1> +<div class="libre-badge">[ <a href="https://www.gnu.org/software/librejs/" aria-describedby="js-warning">GNU LibreJS-compliant</a><span id="js-warning" role="tooltip">LibreJS compliance concerns software freedom, not a guarantee of privacy or security. Review the source code, dependencies, and scripts delivered to your browser. Server-delivered code can change between visits; free software can still track users or behave maliciously.</span> ] +<a class="script-licenses" href="/javascript.html" rel="jslicense">[ JAVASCRIPT LICENSES ]</a></div> <header> <pre class="logo-art"><a href="https://doan.luuduct.ai/" class="logo" aria-label="Doan Luu Duc Tai home"> ____ ___ _ _ _ @@ -39,8 +41,6 @@ along with this program. If not, see <https://www.gnu.org/licenses/>. <div class="ascii-panel introduction"> <div class="ascii-bar" aria-hidden="true"><span>+</span><span class="ascii-rule">--------------------------------------------------------------------------------</span><span>+</span></div> <div class="panel-body"> -<h1>MESSAGE ME</h1> -<p>Private text conversations between you and Doan.</p> <p class="build-status">EXPERIMENTAL / LOCAL TEST</p> <p>Keep your file and password. There is no account recovery.<br><a href="/LIMITATIONS.txt">Read the limitations</a> before using this experimental messenger.</p> </div> @@ -51,6 +51,16 @@ along with this program. If not, see <https://www.gnu.org/licenses/>. <button id="create-choice">CREATE NEW CHAT</button> <button id="open-choice">OPEN CHAT FILE</button> </section> +<section id="owner-entry" class="owner-entry" hidden> +<button id="owner-choice">OWNER SETUP</button> +<span class="owner-note">/* Owner (Doan Luu Duc Tai) only. */</span> +</section> +<section id="owner-access" hidden> +<h2>Owner access (owner only)</h2> +<p>An owner identity is already registered. Open your saved owner file with its password.</p> +<p>If you lost that file, <a href="/LIMITATIONS.txt">reset the chat service from the backend</a> before creating a new owner identity. A reset clears the chat history; it cannot recover the lost key.</p> +<button id="owner-open">OPEN OWNER FILE</button> +</section> <section id="create" hidden> <h2 id="create-title">Create a new chat</h2> <form id="create-form" autocomplete="off"> @@ -79,7 +89,7 @@ along with this program. If not, see <https://www.gnu.org/licenses/>. <h3 id="thread-name"></h3> <p id="conversation-fingerprint"></p> <p id="counts"></p> -<form id="history-form"><div class="ascii-field"><div class="ascii-bar field-header"><span aria-hidden="true">+--[ </span><label class="field-heading" for="history-count">Latest messages (0-50)</label><span aria-hidden="true"> ]</span><span class="ascii-rule" aria-hidden="true">--------------------------------------------------------------------------------</span><span aria-hidden="true">+</span></div><div class="field-row"><input id="history-count" type="number" min="0" max="50" step="1" value="0" required></div><div class="ascii-bar field-end" aria-hidden="true"><span>+</span><span class="ascii-rule">--------------------------------------------------------------------------------</span><span>+</span></div></div><button type="submit">LOAD HISTORY</button></form> +<form id="history-form" novalidate><div class="ascii-field"><div class="ascii-bar field-header"><span aria-hidden="true">+--[ </span><label id="history-range" class="field-heading" for="history-count">Latest messages (0-0)</label><span aria-hidden="true"> ]</span><span class="ascii-rule" aria-hidden="true">--------------------------------------------------------------------------------</span><span aria-hidden="true">+</span></div><div class="field-row"><input id="history-count" type="number" min="0" max="0" step="1" value="0" required></div><div class="ascii-bar field-end" aria-hidden="true"><span>+</span><span class="ascii-rule">--------------------------------------------------------------------------------</span><span>+</span></div></div><button type="submit">LOAD HISTORY</button></form> <button id="older" hidden>LOAD OLDER</button> <ol id="messages" aria-label="Messages"></ol> <p id="message-limit">Plain text only. Up to 8192 UTF-8 bytes per message.</p> @@ -92,7 +102,6 @@ along with this program. If not, see <https://www.gnu.org/licenses/>. <a class="project-license" href="https://www.gnu.org/licenses/agpl-3.0.html">[ LICENSE ]</a> <a class="dependency-licenses" href="/THIRD-PARTY-LICENSES.html">[ THIRD PARTY LICENSES ]</a> <a href="/SOURCE.tar.gz">[ SOURCE CODE ]</a> -<a href="/javascript.html" rel="jslicense">[ JAVASCRIPT LICENSES ]</a> </footer> </main> </body> diff --git a/crates/chat-server/web/style.css b/crates/chat-server/web/style.css index 80b07a6..5587f58 100644 --- a/crates/chat-server/web/style.css +++ b/crates/chat-server/web/style.css @@ -29,12 +29,13 @@ along with this program. If not, see <https://www.gnu.org/licenses/>. } * { box-sizing: border-box; } -body { overflow-y: scroll; font: 16px/1.5 monospace, monospace; margin: 0; background: var(--background); color: var(--foreground); } +html { overflow-y: scroll; scrollbar-gutter: stable; } +body { overflow: visible; font: 16px/1.5 monospace, monospace; margin: 0; background: var(--background); color: var(--foreground); } main { width: 80ch; max-width: calc(100% - 32px); margin: 16px auto; position: relative; } a { color: var(--link); text-decoration: none; } a:hover { text-decoration: underline; } a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 2px solid var(--link); outline-offset: 4px; } -.logo-art { font: inherit; line-height: 1.2; margin: 0 0 2em; overflow-x: auto; } +.logo-art { font: inherit; line-height: 1.2; margin: 0 0 2em; overflow: visible; } .logo { color: var(--logo); display: inline-block; } .logo:hover { text-decoration: none; } .site-nav { display: flex; flex-wrap: wrap; gap: 2ch; margin: 0 0 2em; } @@ -85,12 +86,18 @@ section { margin: 2em 0; } #messages li::before { content: '--------------------------------------------------------------------------------'; display: block; overflow: hidden; white-space: pre; margin: 1em 0; } #messages p { white-space: pre-wrap; overflow-wrap: anywhere; margin: .5em 0 1em; } #messages small { color: var(--link); font: inherit; } +#status:empty { display: none; } #status { min-height: 1.5em; color: var(--link); margin: 2em 0 1em; padding-left: 2ch; position: relative; } #status::before { content: '>'; color: var(--good); position: absolute; left: 0; font-weight: bold; } .libre-badge { position: absolute; top: 0; right: 0; color: var(--warning); font-weight: bold; } -.libre-badge > a { color: inherit; text-decoration: underline wavy; text-underline-offset: .2em; } +.libre-badge > a[aria-describedby] { color: inherit; text-decoration: underline wavy; text-underline-offset: .2em; } #js-warning { display: none; position: absolute; top: 2em; right: 0; width: 48ch; max-width: calc(100vw - 32px); padding: 1em 2ch; background: var(--background); color: var(--foreground); border: 1px dashed var(--warning); z-index: 1; font-weight: normal; } -.libre-badge > a:hover + #js-warning, .libre-badge > a:focus-visible + #js-warning { display: block; } +.libre-badge > a[aria-describedby]:hover + #js-warning, .libre-badge > a[aria-describedby]:focus-visible + #js-warning { display: block; } +.script-licenses { display: block; color: var(--link); font-size: .875em; text-align: right; margin-top: .5em; } +.owner-entry { display: flex; flex-wrap: wrap; align-items: baseline; gap: .5em 1ch; margin: 1em 0; } +.owner-entry button { margin-right: 0; } +.owner-note { color: var(--muted); font-size: .875em; } +.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; } .source-footer { display: flex; flex-direction: column; align-items: flex-end; gap: .5em; text-align: right; margin: 3em 0 1em; font-weight: bold; } .source-footer::before { content: '________________________________________________________________________________'; display: block; width: 100%; overflow: hidden; white-space: pre; margin-bottom: 1em; font-weight: normal; } .project-license { color: var(--license); } diff --git a/docs/CHAT-APPLICATION.txt b/docs/CHAT-APPLICATION.txt index 9d281ed..7b4dc40 100644 --- a/docs/CHAT-APPLICATION.txt +++ b/docs/CHAT-APPLICATION.txt @@ -37,7 +37,11 @@ WHAT EXISTS and inbox; the canonical RSA OpenPGP key is not used for chat encryption. History defaults to zero messages. Authenticated counters show total, sent, - and received messages. Load 0 to 50 recent messages, then page backwards. + and received messages. Choose 0 to N recent messages, where N is the current + conversation total, or page backwards for older messages. Counts refresh when + the history input is focused, history is requested, or a send is acknowledged. + Large selections are fetched and verified in batches of at most 50; that is + a per-request resource bound, not a user-visible 50-message selection limit. Reload, lock, or leaving clears the application's in-memory references and visible messages. A separate authenticated session expires after 30 minutes. There is no automatic background polling, notification, or remote logout. @@ -73,15 +77,16 @@ LOCAL PREREQUISITES AND COMMANDS cargo stack chat - Open: - - http://127.0.0.1:9080/#setup + Open http://127.0.0.1:9080/ and choose OWNER SETUP, labeled for the owner + only. The direct http://127.0.0.1:9080/#setup link also works. Read CHAT_SETUP_TOKEN from your root .env locally and paste it into the owner setup form. Choose an owner display name and a strong unique password. Save the downloaded file, reopen it, and unlock it. That establishes the owner public identity. The setup token stops authorizing setup once an owner exists. - It does not become an owner login or a key recovery mechanism. Never publish + It does not become an owner login or a key recovery mechanism. OWNER SETUP + stays visible; once an owner exists, it explains how to open the existing + owner file or reset after loss instead of silently replacing the key. Never publish the owner private file or its password. Keep both in your private KeePassXC database, along with a separately protected backup of that database. @@ -97,6 +102,52 @@ LOCAL PREREQUISITES AND COMMANDS operational review, and a main-branch merge remain separate work. Do not expose this experimental development service through a public proxy. +OWNER FILE LOSS AND BACKEND RESET + + A setup token grants registration permission. It cannot recover the private + key inside a lost owner file. If that file and its backups are gone, existing + messages cannot be decrypted with a newly generated identity. The reset below + intentionally starts a fresh chat service and clears all stored messages, + encrypted profiles, conversations, counters, and the owner registration. + It preserves the root .env and any previously exported backup archives. + It does not claim forensic erasure of backups, snapshots, or OS copies. + + Run these commands locally at the stack root for the current development + build. There is no reset operation in the HTTP API. Filesystem access to + the private chat directory is the administrative boundary. A future production + package must expose the same options through its prebuilt server binary; + do not install Rust on the VPS for these development commands. + + Read the current public fingerprint, even if you have lost the private file: + + cargo stack chat --owner-fingerprint + + Stop the chat server with Control-C in its terminal, then explicitly pass + that full fingerprint to the destructive reset command: + + cargo stack chat --reset-owner PASTE_CURRENT_OWNER_FINGERPRINT_HERE + + A fingerprint mismatch refuses without deleting data. The server and reset + process share a filesystem lock; reset also requires the loopback service + port to be free. This prevents resetting a running service, including a + development process launched before the lock was added. Online snapshots and + reading the public owner fingerprint remain available while chat is running. + + Restart: + + cargo stack chat + + Choose OWNER SETUP and use the existing CHAT_SETUP_TOKEN from the same root + .env to generate, save, and reopen a fresh owner file. Back that file and its + password up in KeePassXC. Visitors must create fresh chat files too: their + previous files pin the former owner key and are correctly rejected after + replacement. A reset cannot prove continuity with the lost key. + + If an old owner file is found later, an old encrypted backup may still allow + recovering its original conversations in an isolated restored installation. + The reset does not remove existing exported archives, and it never substitutes + a new key into old ciphertext or old visitor files. + FILE AND MESSAGE CRYPTOGRAPHY OpenPGP v6, ML-KEM-1024 + X448 encryption, ML-DSA-87 + Ed448 signatures, @@ -178,7 +229,7 @@ AUTHENTICATION AND STORAGE Send retries are deliberate; messages are not automatically resent. Limits: 8192 UTF-8 bytes per text, 16384 bytes per signed payload, 65536 base64 - characters per stored ciphertext, 50 history rows per request, 1000 visitor + characters per stored ciphertext, 50 history rows per API request, 1000 visitor identities, 10000 messages per conversation, and a one-billion-character total message-ciphertext budget. At most 60 authentication challenges per global minute window, 128 pending challenges, 256 active sessions, and four @@ -187,7 +238,8 @@ AUTHENTICATION AND STORAGE protection against determined traffic, account creation, CPU, or disk attacks. Public-key and profile storage, indexes, journals, and backups add overhead to the ciphertext budget. Monitor actual disk use. No public abuse controls, - deletion UI, rotation UI, blocklist, or password-change UI are implemented. + deletion UI, in-place key rotation UI, blocklist, or password-change UI are + implemented. Lost-owner recovery uses the explicit backend reset above. BROWSER STATE AND LIMITATIONS @@ -273,6 +325,8 @@ INTERFACE AND SITE STYLE amber and muted green accents. The LibreJS badge stays yellow with its keyboard-accessible warning. Small screens keep readable form controls and fit the ASCII rules to the available width instead of shrinking all text. + Scrolling belongs to the root viewport at the screen edge; the logo has no + inner scroll container. JavaScript licenses sit below the LibreJS badge. No remote fonts, images, or additional scripts are required. LICENSES, SOURCE, AND VERIFICATION @@ -340,9 +394,13 @@ LICENSES, SOURCE, AND VERIFICATION The crypto browser probe fails closed without browser CSPRNG entropy and on unknown WASI imports. The application browser test uses real WASI/OpenSSL cryptography, protected file downloads and reopen, incorrect passwords, - signed sends/replies, safe text display, counts, zero-history, pagination, + signed sends/replies, safe text display, counts, zero-history, loading all + 54 fixture messages through 50+4 batches, pagination, lost-response retry deduplication, reload, explicit lock, origin rejection, - live database snapshot restoration with both original identity files, in-flight + live database snapshot restoration with both original identity files, owner + setup/access controls, refusing reset while running or with a mismatched + fingerprint, successful backend reset and fresh registration, rejecting old + visitor key pins, in-flight lock, back/forward restoration, and checks for plaintext persistence or private credential uploads. Native tests cover authorization, challenge reuse, expiry, locked sessions, diff --git a/src/main.rs b/src/main.rs index 08c88f5..4c528da 100644 --- a/src/main.rs +++ b/src/main.rs @@ -51,8 +51,17 @@ struct Cli { enum Action { #[command(about = "Run the experimental local chat or initialize its single .env")] Chat { - #[arg(long)] + #[arg(long, conflicts_with_all = ["reset_owner", "owner_fingerprint"])] init: bool, + #[arg( + long, + value_name = "FINGERPRINT", + conflicts_with = "owner_fingerprint", + help = "Permanently clear owner registration and chat history after key loss" + )] + reset_owner: Option<String>, + #[arg(long, help = "Print the registered owner's public fingerprint")] + owner_fingerprint: bool, }, #[command(about = "Start the local development services")] Dev { @@ -132,7 +141,12 @@ fn execute(arguments: Cli) -> Result<()> { return archive::restore(&absolute(archive)?, &absolute(destination)?); } let project = Project::discover(arguments.root.as_deref())?; - if let Action::Chat { init } = arguments.command { + if let Action::Chat { + init, + reset_owner, + owner_fingerprint, + } = arguments.command + { let mut command = project.command("cargo")?; command .args(["run", "--locked", "-p", "stack-chat-server", "--", "--root"]) @@ -140,6 +154,12 @@ fn execute(arguments: Cli) -> Result<()> { if init { command.arg("--init"); } + if let Some(fingerprint) = reset_owner { + command.arg("--reset-owner").arg(fingerprint); + } + if owner_fingerprint { + command.arg("--owner-fingerprint"); + } return process::run(&mut command); } let _operation = project.lock()?; |