Files
Hare c78f7f7d80 feat: replace revision counters with domain state contracts
Use content digests, key fingerprints, binding and trust identities, immutable mutation receipts, and observation tokens instead of state-update ordinals across API, storage, Runtime, and Web contracts.

Preserve historical replay and secret material through frozen migrations; preflight uncertain removals before cutover, resume provisioning receipts, validate encrypted migration candidates, and align fresh/upgraded schemas. Include reviewed regression fixes, generated artifacts, and validation evidence.
2026-10-10 15:55:20 +09:00

394 lines
15 KiB
TypeScript

// Browser-only, in-memory API fixture. This is NOT Backend authorization/storage evidence.
import type {
DriveEntry,
DriveEntryRef,
DriveGrantResponse,
DriveMutation,
DriveMutationResponse,
} from "../../../web/workspace/src/lib/generated/drive-api.ts";
import { fixturePng } from "./raster.ts";
type Node = { entry: DriveEntry; bytes: Uint8Array };
type Workspace = {
nodes: Map<string, Node>;
receipts: Map<string, DriveMutationResponse>;
grants: DriveGrantResponse[];
next: bigint;
};
export type FixtureLog = {
workspace: string;
path: string;
method: string;
requestId: string | null;
nodeId: string | null;
expectedMutationId: string | null;
};
const encoder = new TextEncoder();
const rootId = "9007199254740993";
export const fixtureRootId = rootId;
const instant = "2026-01-02T00:00:00Z";
const errors = {
denied: 403,
not_found: 404,
conflict: 409,
invalid: 400,
limit: 413,
storage_unavailable: 503,
outcome_unknown: 503,
} as const;
function failure(code: keyof typeof errors): Response {
return Response.json({
code,
classification: code === "outcome_unknown" ? "unknown" : "not_committed",
message: `Drive fixture ${code}`,
}, { status: errors[code] });
}
export function createDriveFixture() {
const workspaces = new Map<string, Workspace>();
const log: FixtureLog[] = [];
const faults = new Map<string, string>();
function ws(id: string): Workspace {
let state = workspaces.get(id);
if (state) return state;
state = { nodes: new Map(), receipts: new Map(), grants: [], next: 100n };
workspaces.set(id, state);
const add = (
nodeId: string,
name: string,
kind: "folder" | "file",
parent: string | null,
contentType: string | null,
bytes = new Uint8Array(),
) => {
const ref = (n: string): DriveEntryRef => ({ workspace_id: id, node_id: n });
state!.nodes.set(nodeId, {
bytes,
entry: {
entry: ref(nodeId),
parent: parent === null ? null : ref(parent),
name,
kind,
last_mutation_id: "1",
size: kind === "file" ? bytes.length : null,
content_type: contentType,
updated_by: "fixture-worker",
updated_at: instant,
latest_url: `/api/w/${encodeURIComponent(id)}/drive/${
kind === "file" ? "download" : "metadata"
}?entry_workspace_id=${encodeURIComponent(id)}&id=${nodeId}`,
},
});
};
add(rootId, "Drive", "folder", null, null);
if (id.includes("empty")) return state;
add("2", "資料", "folder", rootId, null);
add(
"3",
"README.md",
"file",
rootId,
"text/markdown",
encoder.encode(
`# Shared notes\n\nWorker-created latest-only document.\n\n[Local folder](/w/${
encodeURIComponent(id)
}/drive/2)\n\n[Unsafe](javascript:alert(1))\n\n<img src=x onerror=alert(1)>\n\n![External](https://example.invalid/credential-trap.png)\n\n![Image](/w/${
encodeURIComponent(id)
}/drive/5)\n`,
),
);
add("4", "notes.txt", "file", "2", "text/plain", encoder.encode("Second document — 日本語"));
add("5", "landscape.png", "file", rootId, "image/png", fixturePng);
add("6", "empty.txt", "file", rootId, "text/plain");
add("7", "broken.png", "file", rootId, "image/png", encoder.encode("not a valid PNG"));
add(
"8",
"unsafe.svg",
"file",
rootId,
"image/svg+xml",
encoder.encode('<svg onload="alert(1)"></svg>'),
);
add(
"9",
"large.txt",
"file",
rootId,
"text/plain",
encoder.encode("bounded preview\n".repeat(5000)),
);
add(
"10",
"長い名前 — 国際化された資料と分散開発の成果物 — ".repeat(2) + ".md",
"file",
rootId,
"text/markdown",
encoder.encode("# Long name"),
);
add("11", "escaped-64k.txt", "file", rootId, "text/plain", new Uint8Array(65536));
if (id.includes("paged")) {
for (let n = 20; n < 260; n++) {
add(
String(n),
`Document ${n}.txt`,
"file",
rootId,
"text/plain",
encoder.encode(String(n)),
);
}
}
state.next = id.includes("paged") ? 300n : 100n;
return state;
}
function mutate(id: string, requestId: string, mutation: DriveMutation): DriveEntry | null {
const state = ws(id);
const target = "id" in mutation ? state.nodes.get(mutation.id.node_id) : null;
if ("id" in mutation && (mutation.id.workspace_id !== id || !target)) throw "not_found";
if (
target && "expected_mutation_id" in mutation &&
target.entry.last_mutation_id !== mutation.expected_mutation_id
) throw "conflict";
if ("parent" in mutation) {
const parent = state.nodes.get(mutation.parent.node_id);
if (mutation.parent.workspace_id !== id || parent?.entry.kind !== "folder") throw "not_found";
}
if ("name" in mutation) {
if (
!mutation.name || mutation.name.includes("/") || encoder.encode(mutation.name).length > 255
) throw "invalid";
if (
[...state.nodes.values()].some((n) =>
n !== target && n.entry.parent?.node_id === mutation.parent.node_id &&
n.entry.name === mutation.name
)
) throw "conflict";
}
if (mutation.operation === "delete") {
if (
target!.entry.parent === null ||
[...state.nodes.values()].some((n) => n.entry.parent?.node_id === mutation.id.node_id)
) throw "conflict";
state.nodes.delete(mutation.id.node_id);
return null;
}
if (mutation.operation === "relocate") {
target!.entry.parent = mutation.parent;
target!.entry.name = mutation.name;
target!.entry.last_mutation_id = requestId;
return target!.entry;
}
if (mutation.operation === "update_text") {
target!.bytes = encoder.encode(mutation.text);
target!.entry.size = target!.bytes.length;
target!.entry.content_type = mutation.content_type;
target!.entry.last_mutation_id = requestId;
return target!.entry;
}
const nodeId = String(state.next++);
const bytes = mutation.operation === "create_text"
? encoder.encode(mutation.text)
: new Uint8Array();
const entry: DriveEntry = {
entry: { workspace_id: id, node_id: nodeId },
parent: mutation.parent,
name: mutation.name,
kind: mutation.operation === "create_folder" ? "folder" : "file",
last_mutation_id: requestId,
size: mutation.operation === "create_folder" ? null : bytes.length,
content_type: mutation.operation === "create_text" ? mutation.content_type : null,
updated_by: "fixture-user",
updated_at: instant,
latest_url: `/api/w/${encodeURIComponent(id)}/drive/${
mutation.operation === "create_folder" ? "metadata" : "download"
}?entry_workspace_id=${encodeURIComponent(id)}&id=${nodeId}`,
};
state.nodes.set(nodeId, { entry, bytes });
return entry;
}
async function handler(request: Request): Promise<Response | null> {
const url = new URL(request.url);
if (url.pathname === "/__fixture/log") return Response.json(log);
if (url.pathname === "/__fixture/reset" && request.method === "POST") {
workspaces.clear();
faults.clear();
log.length = 0;
return Response.json({ ok: true });
}
if (url.pathname === "/__fixture/fault" && request.method === "POST") {
const body = await request.json();
faults.set(body.workspace, body.mode);
return Response.json({ ok: true });
}
const match = url.pathname.match(/^\/api\/w\/([^/]+)\/drive(\/.*)$/);
if (!match) return null;
const id = decodeURIComponent(match[1]), path = match[2];
const state = ws(id);
const mutationRoute = path === "/mutate" || path === "/upload";
const event: FixtureLog = {
workspace: id,
path,
method: request.method,
requestId: url.searchParams.get("request_id"),
nodeId: url.searchParams.get("id") ?? url.searchParams.get("parent_id"),
expectedMutationId: url.searchParams.get("expected_mutation_id"),
};
log.push(event);
if (id.includes("denied")) return failure("denied");
if (id.includes("offline") || id === "home-error") return failure("storage_unavailable");
if (mutationRoute && (id.includes("readonly") || id === "home-member")) {
return failure("denied");
}
if (path.startsWith("/requests/")) {
const requestId = decodeURIComponent(path.slice(10));
const response = state.receipts.get(requestId) ?? null;
return Response.json({
request_id: requestId,
state: response ? "committed" : "uncommitted",
response,
});
}
if (path === "/grants") {
if (id === "home-member") return failure("denied");
if (request.method === "POST") {
const input = await request.json();
const grant: DriveGrantResponse = {
...input,
grant_id: String(state.grants.length + 1),
workspace_id: id,
revoked: false,
created_by: "fixture-owner",
created_at: instant,
revoked_by: null,
revoked_at: null,
};
state.grants.push(grant);
return Response.json(grant);
}
return Response.json({ grants: state.grants, next_after: null });
}
if (/^\/grants\/\d+$/.test(path) && request.method === "DELETE") {
if (id === "home-member") return failure("denied");
const grant = state.grants.find((g) => g.grant_id === path.split("/")[2]);
if (!grant) return failure("not_found");
grant.revoked = true;
grant.revoked_at = instant;
grant.revoked_by = "fixture-owner";
return Response.json(grant);
}
if (mutationRoute) {
try {
const payload = path === "/mutate" ? await request.json() : null;
const requestId = path === "/upload"
? url.searchParams.get("request_id")!
: payload.request_id;
event.requestId = requestId;
if (payload) {
event.nodeId = payload.mutation.id?.node_id ?? payload.mutation.parent?.node_id ?? null;
event.expectedMutationId = payload.mutation.expected_mutation_id ?? null;
}
if (state.receipts.has(requestId)) return Response.json(state.receipts.get(requestId));
const fault = faults.get(id);
if (fault === "conflict") {
faults.delete(id);
return failure("conflict");
}
let entry: DriveEntry | null;
if (path === "/mutate") entry = mutate(id, requestId, payload.mutation);
else {
const bytes = new Uint8Array(await request.arrayBuffer());
if (bytes.length > 16 * 1024 * 1024) return failure("limit");
if (bytes.length !== Number(url.searchParams.get("size"))) return failure("invalid");
const digest = new Uint8Array(await crypto.subtle.digest("SHA-256", bytes));
if (
[...digest].map((n) => n.toString(16).padStart(2, "0")).join("") !==
url.searchParams.get("sha256")
) return failure("invalid");
const content_type = url.searchParams.get("content_type")!;
if (url.searchParams.get("operation") === "create") {
entry = mutate(id, requestId, {
operation: "create_text",
parent: { workspace_id: id, node_id: url.searchParams.get("parent_id")! },
name: url.searchParams.get("name")!,
text: "",
content_type,
});
} else {entry = mutate(id, requestId, {
operation: "update_text",
id: { workspace_id: id, node_id: url.searchParams.get("id")! },
expected_mutation_id: url.searchParams.get("expected_mutation_id")!,
text: "",
content_type,
});}
const node = state.nodes.get(entry!.entry.node_id)!;
node.bytes = bytes;
node.entry.size = bytes.length;
}
const response = structuredClone({ request_id: requestId, entry });
state.receipts.set(requestId, response);
if (fault === "unknown") {
faults.delete(id);
return failure("outcome_unknown");
}
return Response.json(response);
} catch (error) {
return failure(
typeof error === "string" && error in errors ? error as keyof typeof errors : "invalid",
);
}
}
const nodeId = path === "/root" ? rootId : url.searchParams.get("id");
if (nodeId !== null && path !== "/root" && url.searchParams.get("entry_workspace_id") !== id) {
return failure("invalid");
}
const node = nodeId ? state.nodes.get(nodeId) : null;
if (path === "/root" || path === "/metadata") {
return node ? Response.json(node.entry) : failure("not_found");
}
if (path === "/list" || path === "/search") {
if (path === "/list" && node?.entry.kind !== "folder") return failure("not_found");
const all = [...state.nodes.values()].filter((n) =>
path === "/search"
? n.entry.name.includes(url.searchParams.get("query") ?? "")
: n.entry.parent?.node_id === nodeId
).sort((a, b) => a.entry.name.localeCompare(b.entry.name));
const after = url.searchParams.get("after");
const start = after ? all.findIndex((n) => n.entry.entry.node_id === after) + 1 : 0;
const limit = Math.min(Number(url.searchParams.get("limit") ?? 50), 200);
const entries = all.slice(start, start + limit).map((n) => n.entry);
return Response.json({
entries,
next_after: start + limit < all.length ? entries.at(-1)!.entry.node_id : null,
});
}
if (!node || node.entry.kind !== "file") return failure("not_found");
if (path === "/read-text") {
const text = new TextDecoder().decode(node.bytes.slice(0, 65536));
return Response.json({ entry: node.entry, text, truncated: node.bytes.length > 65536 });
}
if (path === "/download" || path === "/read-chunk") {
if (
url.searchParams.has("expected_mutation_id") &&
url.searchParams.get("expected_mutation_id") !== node.entry.last_mutation_id
) return failure("conflict");
if (faults.get(id) === "image_error" && node.entry.content_type?.startsWith("image/")) {
return failure("storage_unavailable");
}
const bytes = path === "/read-chunk"
? node.bytes.slice(
Number(url.searchParams.get("offset")),
Number(url.searchParams.get("offset")) + Number(url.searchParams.get("length")),
)
: node.bytes;
return new Response(new Uint8Array(bytes).buffer, {
headers: {
"content-type": node.entry.content_type!,
"content-disposition": "attachment",
"x-content-type-options": "nosniff",
},
});
}
return failure("not_found");
}
return { handler, log };
}