@light-merlin-dark/vssh/dist/utils/call-mcp.js

MCP-native SSH proxy for AI agents. CLI & MCP Server, plugin system, AI safety guards.

#!/usr/bin/env node
"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
    var ownKeys = function(o) {
        ownKeys = Object.getOwnPropertyNames || function (o) {
            var ar = [];
            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
            return ar;
        };
        return ownKeys(o);
    };
    return function (mod) {
        if (mod && mod.__esModule) return mod;
        var result = {};
        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
        __setModuleDefault(result, mod);
        return result;
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.MCPClient = void 0;
exports.callMCP = callMCP;
const child_process_1 = require("child_process");
const readline = __importStar(require("readline"));
class MCPClient {
    constructor(command, args = []) {
        this.command = command;
        this.args = args;
        this.rl = null;
        this.responseHandlers = new Map();
        this.nextId = 1;
    }
    async connect() {
        return new Promise((resolve, reject) => {
            this.process = (0, child_process_1.spawn)(this.command, this.args, {
                stdio: ['pipe', 'pipe', 'pipe']
            });
            this.rl = readline.createInterface({
                input: this.process.stdout,
                crlfDelay: Infinity
            });
            this.rl.on('line', (line) => {
                try {
                    const response = JSON.parse(line);
                    const handler = this.responseHandlers.get(response.id);
                    if (handler) {
                        handler(response);
                        this.responseHandlers.delete(response.id);
                    }
                }
                catch (error) {
                    console.error('Failed to parse MCP response:', line);
                }
            });
            this.process.on('error', reject);
            this.process.on('exit', (code) => {
                if (code !== 0) {
                    reject(new Error(`MCP server exited with code ${code}`));
                }
            });
            // Give the process a moment to start
            setTimeout(resolve, 100);
        });
    }
    async call(method, params = {}) {
        const id = this.nextId++;
        const request = {
            jsonrpc: '2.0',
            id,
            method,
            params
        };
        return new Promise((resolve, reject) => {
            this.responseHandlers.set(id, (response) => {
                if (response.error) {
                    reject(new Error(`MCP Error: ${response.error.message}`));
                }
                else {
                    resolve(response.result);
                }
            });
            this.process.stdin.write(JSON.stringify(request) + '\n');
        });
    }
    async close() {
        if (this.rl) {
            this.rl.close();
        }
        if (this.process) {
            this.process.kill();
        }
    }
}
exports.MCPClient = MCPClient;
// Convenience function for one-off calls
async function callMCP(serverPath, method, params = {}, serverArgs = []) {
    const client = new MCPClient(serverPath, serverArgs);
    try {
        await client.connect();
        // Initialize if not already initialized
        if (method !== 'initialize') {
            await client.call('initialize', {
                protocolVersion: '2024-11-05',
                capabilities: {},
                clientInfo: {
                    name: 'vssh-call-mcp',
                    version: '1.0.0'
                }
            });
        }
        const result = await client.call(method, params);
        return result;
    }
    finally {
        await client.close();
    }
}
// CLI interface when run directly
if (require.main === module) {
    const args = process.argv.slice(2);
    if (args.length < 2) {
        console.error('Usage: call-mcp <server-path> <method> [params-json]');
        console.error('Example: call-mcp ./dist/src/mcp-server.js tools/list');
        console.error('Example: call-mcp ./dist/src/mcp-server.js tools/call \'{"name":"run_command","arguments":{"command":"ls"}}\'');
        process.exit(1);
    }
    const [serverPath, method, paramsJson] = args;
    const params = paramsJson ? JSON.parse(paramsJson) : {};
    callMCP(serverPath, method, params)
        .then(result => {
        console.log(JSON.stringify(result, null, 2));
    })
        .catch(error => {
        console.error('Error:', error.message);
        process.exit(1);
    });
}
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