qring-mcp

Instructions

Implementation Reference

• src/mcp/server.ts:462-497 (handler)

  Registration and handler implementation for the 'teleport_unpack' MCP tool in src/mcp/server.ts.

  server.tool(
    "teleport_unpack",
    "Decrypt and import secrets from a teleport bundle.",
    {
      bundle: z.string().describe("Base64-encoded encrypted bundle"),
      passphrase: z.string().describe("Decryption passphrase"),
      scope: scopeSchema.default("global"),
      projectPath: projectPathSchema,
      dryRun: z
        .boolean()
        .optional()
        .default(false)
        .describe("Preview without importing"),
    },
    async (params) => {
      try {
        const payload = teleportUnpack(params.bundle, params.passphrase);
  
        if (params.dryRun) {
          const preview = payload.secrets
            .map((s) => `${s.key} [${s.scope ?? "global"}]`)
            .join("\n");
          return text(`Would import ${payload.secrets.length} secrets:\n${preview}`);
        }
  
        const o = opts(params);
        for (const s of payload.secrets) {
          setSecret(s.key, s.value, o);
        }
  
        return text(`Imported ${payload.secrets.length} secret(s) from teleport bundle`);
      } catch {
        return text("Failed to unpack: wrong passphrase or corrupted bundle", true);
      }
    },
  );

• src/core/teleport.ts:88-116 (helper)

  The core 'teleportUnpack' function in src/core/teleport.ts which performs the actual decryption and parsing of the teleport bundle.

   * Unpack and decrypt a teleport bundle.
   */
  export function teleportUnpack(
    encoded: string,
    passphrase: string,
  ): TeleportPayload {
    const bundleJson = Buffer.from(encoded, "base64").toString("utf8");
    const bundle: TeleportBundle = JSON.parse(bundleJson);
  
    if (bundle.v !== 1) {
      throw new Error(`Unsupported teleport bundle version: ${bundle.v}`);
    }
  
    const salt = Buffer.from(bundle.salt, "base64");
    const iv = Buffer.from(bundle.iv, "base64");
    const tag = Buffer.from(bundle.tag, "base64");
    const encrypted = Buffer.from(bundle.data, "base64");
    const key = deriveKey(passphrase, salt);
  
    const decipher = createDecipheriv(ALGORITHM, key, iv);
    decipher.setAuthTag(tag);
  
    const decrypted = Buffer.concat([
      decipher.update(encrypted),
      decipher.final(),
    ]);
  
    return JSON.parse(decrypted.toString("utf8"));
  }