aboutsummaryrefslogtreecommitdiffstats
path: root/blossom/server.js
diff options
context:
space:
mode:
authorAdam Soltys <[email protected]>2026-10-16 13:05:15 -0700
committerAdam Soltys <[email protected]>2026-10-16 13:05:15 -0700
commit73bffd93caefa53af3a5d28e70059a3cfbe68939 (patch)
tree1f27599810674431205bb53e62416684261c2783 /blossom/server.js
parent294a49598e43e3e6f9e34f0246bbea41837359f9 (diff)
downloadcoinosv3-73bffd93caefa53af3a5d28e70059a3cfbe68939.tar.gz
coinosv3-73bffd93caefa53af3a5d28e70059a3cfbe68939.zip
The server-side services moved out: names, nwcpush, blossom and bridge now live in coinosv3-server. The coinos-server agent on desk extracted them (2026-10-16, after the names.json truncation of 10-15: the registrar is on SQLite there, the drift that had only ever existed on cs is committed there, and names/nwcpush/blossom on cs run from a clone of that repo, deployed by git push through its own hook). Removed here with the tests that went with them (registry-ownership-test, deepl-translate.test); the README points at the new repository and AGENTS.md says how service changes deploy now (git push from ~/coinosv3-server, never scp). feed/ and vmedia/ stay for the moment — they are in coinosv3-server too but still deploy from ~/public-feed and ~/vmedia the old way — with public-feed-cache-test. sync-blob-test spawns blossom from the sibling coinosv3-server checkout (COINOSV3_SERVER overrides) and says so when it isn't there; it passes.
Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01J1Kon8bxJoHRpJdSzshCkp
Diffstat (limited to 'blossom/server.js')
-rw-r--r--blossom/server.js281
1 files changed, 0 insertions, 281 deletions
diff --git a/blossom/server.js b/blossom/server.js
deleted file mode 100644
index 9d3d631..0000000
--- a/blossom/server.js
+++ /dev/null
@@ -1,281 +0,0 @@
-// blossom.coinos.io — a Blossom (BUD-01/02/06/12) blob server that stores
-// ONE kind of thing: encrypted wallet-sync envelopes. The wallet keeps its
-// cross-device state in nostr replaceable events, but a deep Ark coin set
-// outgrows a relay's event cap; those domains go here as an encrypted blob
-// and the nostr event carries only its hash. Any Blossom server can hold the
-// blob (content-addressed), so users can self-host or pick another provider.
-//
-// Abuse policy — this must never become a file host:
-// * uploads, listing and deletion need a signed kind-24242 event (BUD-11)
-// * a blob is stored only if it starts with the wallet's envelope magic
-// ("CSB1" + 24-byte nonce): everything else is 415, so images, video and
-// arbitrary files are refused at the door
-// * blobs are always served as application/octet-stream, as an attachment,
-// nosniff — nothing here renders in a browser or embeds anywhere
-// * per-blob size cap, per-pubkey quota (bytes and count, oldest evicted),
-// per-IP/pubkey rate limits, a global disk cap, and unused-blob expiry
-//
-// Run: bun blossom/server.js (env: BLOSSOM_DATA, BLOSSOM_PORT, BLOSSOM_HOST,
-// BLOSSOM_MAX_BLOB, BLOSSOM_QUOTA_BYTES, BLOSSOM_QUOTA_COUNT,
-// BLOSSOM_DISK_CAP, BLOSSOM_TTL_DAYS)
-
-import { readFileSync, writeFileSync, renameSync, mkdirSync, existsSync, unlinkSync, statSync } from 'node:fs';
-import { join } from 'node:path';
-import { createHash } from 'node:crypto';
-import { verifyEvent } from 'nostr-tools/pure';
-
-const DATA = process.env.BLOSSOM_DATA || join(import.meta.dir, 'data');
-const PORT = Number(process.env.BLOSSOM_PORT || 8796);
-const HOST = process.env.BLOSSOM_HOST || 'blossom.coinos.io';
-const PUBLIC_BASE = process.env.BLOSSOM_PUBLIC_BASE || `https://${HOST}`;
-const MAX_BLOB = Number(process.env.BLOSSOM_MAX_BLOB || 8 * 1024 * 1024); // 8 MB per blob
-const QUOTA_BYTES = Number(process.env.BLOSSOM_QUOTA_BYTES || 32 * 1024 * 1024); // 32 MB per pubkey
-const QUOTA_COUNT = Number(process.env.BLOSSOM_QUOTA_COUNT || 24); // blobs per pubkey
-const DISK_CAP = Number(process.env.BLOSSOM_DISK_CAP || 40 * 1024 * 1024 * 1024); // 40 GB total
-const TTL_DAYS = Number(process.env.BLOSSOM_TTL_DAYS || 365); // unused-blob expiry
-const MAGIC = new TextEncoder().encode('CSB1');
-const ENVELOPE_MIN = MAGIC.length + 24 + 16; // magic + nonce + poly1305 tag
-
-const log = (...a) => console.log(new Date().toISOString(), ...a);
-
-// ---------------------------------------------------------------------------
-// storage: blobs/<sha256> on disk, a small JSON index for ownership + times
-// ---------------------------------------------------------------------------
-const BLOBS = join(DATA, 'blobs');
-const INDEX = join(DATA, 'index.json');
-mkdirSync(BLOBS, { recursive: true });
-let index = (() => {
- try { return JSON.parse(readFileSync(INDEX, 'utf8')); } catch { return { blobs: {} }; }
-})();
-// index.blobs[sha] = { size, uploaded, touched, owners: { [pubkey]: uploadedAt } }
-let persistTimer = null;
-function persist() {
- clearTimeout(persistTimer);
- persistTimer = setTimeout(() => {
- const tmp = INDEX + '.tmp';
- writeFileSync(tmp, JSON.stringify(index));
- renameSync(tmp, INDEX);
- }, 200);
-}
-const blobPath = (sha) => join(BLOBS, sha);
-const totalBytes = () => Object.values(index.blobs).reduce((n, b) => n + b.size, 0);
-const ownedBy = (pk) => Object.entries(index.blobs).filter(([, b]) => b.owners[pk]).map(([sha, b]) => ({ sha, ...b }));
-
-function descriptor(sha, b) {
- return { url: `${PUBLIC_BASE}/${sha}`, sha256: sha, size: b.size, type: 'application/octet-stream', uploaded: Math.floor(b.uploaded / 1000) };
-}
-function dropBlob(sha) {
- delete index.blobs[sha];
- try { unlinkSync(blobPath(sha)); } catch {}
-}
-// Remove a pubkey's claim; the file goes when nobody claims it.
-function disown(sha, pk) {
- const b = index.blobs[sha];
- if (!b) return;
- delete b.owners[pk];
- if (!Object.keys(b.owners).length) dropBlob(sha);
-}
-// Quota: a pubkey keeps at most QUOTA_COUNT blobs / QUOTA_BYTES — the OLDEST
-// go first, so a client that forgets to delete superseded snapshots keeps
-// working (the newest state is what sync needs).
-function enforceQuota(pk, incomingSize) {
- const mine = ownedBy(pk).sort((a, b) => a.owners[pk] - b.owners[pk]);
- let bytes = mine.reduce((n, b) => n + b.size, 0) + incomingSize;
- let count = mine.length + 1;
- for (const b of mine) {
- if (count <= QUOTA_COUNT && bytes <= QUOTA_BYTES) break;
- disown(b.sha, pk);
- bytes -= b.size; count--;
- }
- return count <= QUOTA_COUNT && bytes <= QUOTA_BYTES;
-}
-// Blobs nobody fetched or re-uploaded in TTL_DAYS are abandoned wallets'
-// snapshots (or a client that moved on) — sweep them.
-function sweep() {
- const cutoff = Date.now() - TTL_DAYS * 86400_000;
- let n = 0;
- for (const [sha, b] of Object.entries(index.blobs)) if ((b.touched || b.uploaded) < cutoff) { dropBlob(sha); n++; }
- if (n) { log('swept', n, 'expired blobs'); persist(); }
-}
-setInterval(sweep, 6 * 3600_000);
-sweep();
-
-// ---------------------------------------------------------------------------
-// auth (BUD-11): kind 24242, t=verb, expiration in the future, x=sha when the
-// endpoint names a blob, optional server tags naming us
-// ---------------------------------------------------------------------------
-function checkAuth(req, verb, sha = null) {
- const h = req.headers.get('authorization') || '';
- const m = h.match(/^Nostr\s+(.+)$/i);
- if (!m) return { error: 'missing Nostr authorization' };
- let evt;
- try { evt = JSON.parse(Buffer.from(m[1].replace(/-/g, '+').replace(/_/g, '/'), 'base64').toString('utf8')); } catch { return { error: 'bad auth encoding' }; }
- if (!evt || evt.kind !== 24242) return { error: 'auth must be kind 24242' };
- const now = Math.floor(Date.now() / 1000);
- if (!(evt.created_at <= now + 60)) return { error: 'auth created in the future' };
- const tags = Array.isArray(evt.tags) ? evt.tags : [];
- const tag = (k) => tags.filter((x) => x[0] === k).map((x) => x[1]);
- const exp = Number(tag('expiration')[0]);
- if (!exp || exp <= now) return { error: 'auth expired' };
- if (!tag('t').includes(verb)) return { error: `auth is not for ${verb}` };
- const servers = tag('server');
- if (servers.length && !servers.some((s) => String(s).toLowerCase() === HOST)) return { error: 'auth is for another server' };
- if (sha && !tag('x').includes(sha)) return { error: 'auth does not name this blob' };
- if (!verifyEvent(evt)) return { error: 'bad signature' };
- return { pubkey: evt.pubkey };
-}
-
-// ---------------------------------------------------------------------------
-// rate limits: per IP and per pubkey, sliding minute
-// ---------------------------------------------------------------------------
-const rate = new Map();
-function rateOk(key, limit) {
- const now = Date.now();
- const arr = (rate.get(key) || []).filter((t) => t > now - 60_000);
- if (arr.length >= limit) return false;
- arr.push(now);
- rate.set(key, arr);
- if (rate.size > 5000) for (const [k, v] of rate) { if (!v.some((t) => t > now - 60_000)) rate.delete(k); }
- return true;
-}
-
-// ---------------------------------------------------------------------------
-// http
-// ---------------------------------------------------------------------------
-const CORS = {
- 'Access-Control-Allow-Origin': '*',
- 'Access-Control-Allow-Headers': 'Authorization, Content-Type, X-SHA-256, X-Content-Length, X-Content-Type, *',
- 'Access-Control-Allow-Methods': 'GET, HEAD, PUT, DELETE, OPTIONS',
- 'Access-Control-Expose-Headers': 'X-Reason, Content-Length',
- 'Access-Control-Max-Age': '86400',
-};
-const json = (obj, status = 200, extra = {}) =>
- new Response(JSON.stringify(obj), { status, headers: { 'content-type': 'application/json', ...CORS, ...extra } });
-const fail = (status, reason) => json({ message: reason }, status, { 'X-Reason': reason });
-const SHA_RE = /^\/([0-9a-f]{64})(\.[a-z0-9]+)?$/;
-
-// Envelope check: our client's sealed snapshot, nothing else.
-function envelopeOk(head, size) {
- if (size < ENVELOPE_MIN || size > MAX_BLOB) return false;
- for (let i = 0; i < MAGIC.length; i++) if (head[i] !== MAGIC[i]) return false;
- return true;
-}
-// BUD-06 style policy check shared by HEAD /upload and PUT /upload.
-function uploadPolicy(size, head, pk) {
- if (!Number.isFinite(size) || size <= 0) return fail(411, 'X-Content-Length required');
- if (size > MAX_BLOB) return fail(413, `blob exceeds ${MAX_BLOB} bytes`);
- if (head && !envelopeOk(head, size)) return fail(415, 'only coinos wallet sync envelopes are stored here');
- if (totalBytes() + size > DISK_CAP) return fail(503, 'storage full');
- if (pk && !enforceQuota(pk, size)) return fail(413, 'per-key quota exceeded');
- return null;
-}
-
-Bun.serve({
- port: PORT,
- maxRequestBodySize: MAX_BLOB + 1024,
- async fetch(req) {
- const url = new URL(req.url);
- const ip = req.headers.get('cf-connecting-ip') || req.headers.get('x-forwarded-for') || 'local';
- if (req.method === 'OPTIONS') return new Response(null, { status: 204, headers: CORS });
-
- if (url.pathname === '/' && req.method === 'GET') {
- return json({ name: HOST, about: 'coinos wallet sync storage (Blossom). Stores encrypted wallet snapshots only.',
- maxBlob: MAX_BLOB, quotaBytes: QUOTA_BYTES, quotaCount: QUOTA_COUNT, blobs: Object.keys(index.blobs).length });
- }
-
- // ---- upload requirements (BUD-06) ----
- if (url.pathname === '/upload' && req.method === 'HEAD') {
- if (!rateOk('ip:' + ip, 120)) return fail(429, 'rate limited');
- const sha = (req.headers.get('x-sha-256') || '').toLowerCase();
- const a = checkAuth(req, 'upload', /^[0-9a-f]{64}$/.test(sha) ? sha : null);
- if (a.error) return fail(401, a.error);
- const size = Number(req.headers.get('x-content-length'));
- if (!Number.isFinite(size) || size <= 0) return fail(411, 'X-Content-Length required');
- if (size < ENVELOPE_MIN) return fail(415, 'only coinos wallet sync envelopes are stored here');
- const type = (req.headers.get('x-content-type') || '').split(';')[0].trim();
- if (type && type !== 'application/octet-stream') return fail(415, 'only application/octet-stream sync envelopes are stored here');
- // quota is not checked here: PUT evicts the key's oldest blob to make room
- const bad = uploadPolicy(size, null, null);
- if (bad) return bad;
- return new Response(null, { status: 200, headers: CORS });
- }
-
- // ---- upload (BUD-02) ----
- if (url.pathname === '/upload' && req.method === 'PUT') {
- if (!rateOk('ip:' + ip, 60)) return fail(429, 'rate limited');
- const bytes = new Uint8Array(await req.arrayBuffer());
- const sha = createHash('sha256').update(bytes).digest('hex');
- const a = checkAuth(req, 'upload', sha);
- if (a.error) return fail(401, a.error);
- if (!rateOk('pk:' + a.pubkey, 30)) return fail(429, 'rate limited');
- const want = (req.headers.get('x-sha-256') || '').toLowerCase();
- if (want && want !== sha) return fail(409, 'X-SHA-256 does not match the body');
- const type = (req.headers.get('content-type') || '').split(';')[0].trim();
- if (type && type !== 'application/octet-stream') return fail(415, 'only application/octet-stream sync envelopes are stored here');
- const existing = index.blobs[sha];
- const bad = uploadPolicy(bytes.length, bytes.subarray(0, MAGIC.length), existing?.owners[a.pubkey] ? null : a.pubkey);
- if (bad) return bad;
- const now = Date.now();
- if (!existing) {
- writeFileSync(blobPath(sha), bytes);
- index.blobs[sha] = { size: bytes.length, uploaded: now, touched: now, owners: { [a.pubkey]: now } };
- } else {
- existing.touched = now;
- existing.owners[a.pubkey] = existing.owners[a.pubkey] || now;
- }
- persist();
- log('upload', sha.slice(0, 12), bytes.length, 'b', a.pubkey.slice(0, 8), existing ? '(exists)' : '');
- return json(descriptor(sha, index.blobs[sha]), existing ? 200 : 201);
- }
-
- // ---- list (BUD-12): only the owner sees their own blobs ----
- const lm = url.pathname.match(/^\/list\/([0-9a-f]{64})$/);
- if (lm && req.method === 'GET') {
- if (!rateOk('ip:' + ip, 120)) return fail(429, 'rate limited');
- const a = checkAuth(req, 'list');
- if (a.error) return fail(401, a.error);
- if (a.pubkey !== lm[1]) return fail(403, 'you can only list your own blobs');
- const since = Number(url.searchParams.get('since')) || 0, until = Number(url.searchParams.get('until')) || Infinity;
- const list = ownedBy(a.pubkey)
- .map((b) => descriptor(b.sha, b))
- .filter((d) => d.uploaded >= since && d.uploaded <= until)
- .sort((x, y) => y.uploaded - x.uploaded);
- return json(list);
- }
-
- // ---- fetch / delete a blob ----
- const bm = url.pathname.match(SHA_RE);
- if (bm) {
- const sha = bm[1];
- const b = index.blobs[sha];
- if (req.method === 'DELETE') {
- if (!rateOk('ip:' + ip, 120)) return fail(429, 'rate limited');
- const a = checkAuth(req, 'delete', sha);
- if (a.error) return fail(401, a.error);
- if (!b) return fail(404, 'no such blob');
- if (!b.owners[a.pubkey]) return fail(403, 'not your blob');
- disown(sha, a.pubkey);
- persist();
- log('delete', sha.slice(0, 12), a.pubkey.slice(0, 8));
- return new Response(null, { status: 204, headers: CORS });
- }
- if (req.method === 'GET' || req.method === 'HEAD') {
- if (!rateOk('ip:' + ip, 300)) return fail(429, 'rate limited');
- if (!b || !existsSync(blobPath(sha))) return fail(404, 'no such blob');
- b.touched = Date.now(); persist();
- const headers = {
- ...CORS,
- 'content-type': 'application/octet-stream',
- 'content-length': String(b.size),
- 'content-disposition': `attachment; filename="${sha}.bin"`,
- 'x-content-type-options': 'nosniff',
- 'cache-control': 'private, max-age=31536000, immutable',
- };
- if (req.method === 'HEAD') return new Response(null, { status: 200, headers });
- return new Response(Bun.file(blobPath(sha)), { status: 200, headers });
- }
- }
- return fail(404, 'not found');
- },
-});
-log(`blossom ${HOST} on :${PORT} — ${Object.keys(index.blobs).length} blobs, ${(totalBytes() / 1e6).toFixed(1)} MB, data ${DATA}`);