File size: 9,030 Bytes
253e783 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 | import { randomUUID } from "node:crypto";
import fs from "node:fs/promises";
import http from "node:http";
import os from "node:os";
import path from "node:path";
import { Server } from "@modelcontextprotocol/sdk/server/index.js";
import { StreamableHTTPServerTransport } from "@modelcontextprotocol/sdk/server/streamableHttp.js";
import {
CallToolRequestSchema,
CallToolResultSchema,
ListToolsRequestSchema,
} from "@modelcontextprotocol/sdk/types.js";
import { Value } from "typebox/value";
import { readJsonBodyWithLimit } from "../infra/http-body.js";
import {
decodeNodeClaudeSkillInit,
encodeNodeClaudeSkillMessage,
NODE_CLAUDE_SKILLS_MESSAGE_BYTES,
NODE_CLAUDE_WORKSHOP_CALL_BYTES,
NODE_CLAUDE_WORKSHOP_RESULT_BYTES,
NodeClaudeSkillResultSchema,
type NodeClaudeSkillInit,
} from "../infra/node-claude-skill-protocol.js";
import { removeTemporaryArtifacts } from "../infra/temp-artifact-cleanup.js";
import type { OpenClawPluginNodeHostCommandIo } from "../plugins/types.js";
import { createDeferredCore } from "../shared/deferred.js";
import { materializeSkillResources } from "../skills/runtime/resources.js";
/** The local MCP endpoint is a transport proxy only; no library, profile, or admin access. */
export async function prepareNodeClaudeSkillSession(io: OpenClawPluginNodeHostCommandIo) {
const frames = io.frames;
if (!frames) {
throw new Error("Upgrade and restart this node host for Claude skill resource support.");
}
const initialized = createDeferredCore<NodeClaudeSkillInit>();
void initialized.promise.catch(() => {});
const pending = new Map<string, ReturnType<typeof createDeferredCore<unknown>>>();
let receivedInit = false;
let closed = false;
let artifacts: Awaited<ReturnType<typeof materializeSkillResources>> | undefined;
let directory: string | undefined;
let server: http.Server | undefined;
const mcpServers = new Set<Server>();
const assertCurrent = () => {
io.signal.throwIfAborted();
if (closed) {
throw new Error("Claude node skill invocation closed.");
}
};
const revoke = () => {
closed = true;
const error = new Error("Claude node skill invocation closed. Send a fresh message.");
initialized.reject(error);
for (const call of pending.values()) {
call.reject(error);
}
pending.clear();
};
let unsubscribe: (() => void) | undefined;
const close = async () => {
revoke();
unsubscribe?.();
io.signal.removeEventListener("abort", revoke);
server?.closeAllConnections();
try {
await Promise.all([...mcpServers].map((mcp) => mcp.close()));
} finally {
if (server?.listening) {
await new Promise<void>((resolve, reject) => {
server!.close((error) => (error ? reject(error) : resolve()));
});
}
}
};
const cleanup = async () => {
await artifacts?.cleanup();
if (directory) {
await removeTemporaryArtifacts(directory, "Node Claude skill session");
}
};
try {
io.signal.addEventListener("abort", revoke, { once: true });
assertCurrent();
unsubscribe = frames.onMessage((bytes) => {
assertCurrent();
if (!receivedInit) {
receivedInit = true;
initialized.resolve(decodeNodeClaudeSkillInit(bytes));
return;
}
if (bytes.byteLength > NODE_CLAUDE_WORKSHOP_RESULT_BYTES) {
throw new Error("Claude Workshop response exceeds its limit.");
}
const value: unknown = JSON.parse(Buffer.from(bytes).toString("utf8"));
if (!Value.Check(NodeClaudeSkillResultSchema, value)) {
throw new Error("Invalid Claude Workshop response.");
}
const call = pending.get(value.id);
if (!call) {
throw new Error("Claude Workshop response has no pending caller.");
}
pending.delete(value.id);
call.resolve(CallToolResultSchema.parse(value.result));
});
const init = await initialized.promise;
assertCurrent();
if (init.resources) {
artifacts = await materializeSkillResources(init.resources, assertCurrent);
assertCurrent();
}
// Claude's native Read permission covers the project plus --add-dir roots.
// Expose only verified resources, never the separate MCP configuration file.
const argv: string[] = artifacts ? ["--add-dir", artifacts.directory] : [];
const workshop = init.workshop;
if (workshop) {
directory = await fs.mkdtemp(path.join(os.tmpdir(), "openclaw-node-claude-skills-"));
assertCurrent();
// An unguessable local route prevents unrelated browser traffic; the
// Gateway's exact pending invocation remains the privileged effect owner.
const route = `/mcp/${randomUUID()}`;
server = http.createServer((req, res) => {
void (async () => {
assertCurrent();
if (req.url !== route || req.headers.origin !== undefined || req.method !== "POST") {
res.writeHead(404).end();
return;
}
if (mcpServers.size >= 8) {
res.writeHead(429).end();
return;
}
const mcp = new Server(
{ name: "openclaw-node-skills", version: "1" },
{ capabilities: { tools: {} } },
);
const transport = new StreamableHTTPServerTransport({
sessionIdGenerator: undefined,
enableJsonResponse: true,
});
mcpServers.add(mcp);
res.once("close", () => {
mcpServers.delete(mcp);
void mcp.close().catch(revoke);
});
mcp.setRequestHandler(ListToolsRequestSchema, async () => {
assertCurrent();
return {
tools: [
{
name: "skill_workshop",
description: workshop.description,
inputSchema: { ...workshop.inputSchema, type: "object" as const },
},
],
};
});
mcp.setRequestHandler(CallToolRequestSchema, async (request) => {
assertCurrent();
if (request.params.name !== "skill_workshop" || pending.size >= 8) {
throw new Error("Only this turn's Skill Workshop is available.");
}
const id = randomUUID();
const call = createDeferredCore<unknown>();
void call.promise.catch(() => {});
pending.set(id, call);
try {
await frames.send(
encodeNodeClaudeSkillMessage(
{ type: "workshop", id, arguments: request.params.arguments ?? {} },
NODE_CLAUDE_WORKSHOP_CALL_BYTES,
),
);
const result = await call.promise;
assertCurrent();
return CallToolResultSchema.parse(result);
} finally {
pending.delete(id);
}
});
const body = await readJsonBodyWithLimit(req, {
maxBytes: NODE_CLAUDE_WORKSHOP_CALL_BYTES,
timeoutMs: 10_000,
});
assertCurrent();
if (!body.ok) {
res.writeHead(400).end();
return;
}
await mcp.connect(transport);
assertCurrent();
await transport.handleRequest(req, res, body.value);
})().catch(() => {
if (!res.headersSent) {
res.writeHead(503);
}
res.end();
});
});
await new Promise<void>((resolve, reject) => {
server!.once("error", reject);
server!.listen(0, "127.0.0.1", resolve);
});
assertCurrent();
const address = server.address();
if (!address || typeof address === "string") {
throw new Error("Claude node MCP listener did not publish its address.");
}
const configPath = path.join(directory, "mcp.json");
await fs.writeFile(
configPath,
JSON.stringify({
mcpServers: {
openclaw: {
type: "http",
url: `http://127.0.0.1:${address.port}${route}`,
alwaysLoad: true,
},
},
}),
{ mode: 0o600, flag: "wx" },
);
assertCurrent();
// Only this host-controlled tool may skip Claude's prompt. Native tools
// retain the node's existing execution and permission policy.
argv.push("--mcp-config", configPath, "--allowedTools", "mcp__openclaw__skill_workshop");
}
return {
argv,
catalog: artifacts?.snapshot.prompt ?? "",
rewriteReferences: (text: string) => artifacts?.rewriteReferences(text) ?? text,
writeStdout: async (text: string) => {
assertCurrent();
await frames.send(
encodeNodeClaudeSkillMessage({ type: "stdout", text }, NODE_CLAUDE_SKILLS_MESSAGE_BYTES),
);
},
close,
cleanup,
};
} catch (error) {
try {
await close();
} finally {
await cleanup();
}
throw error;
}
}
|