379 lines
13 KiB
JavaScript
379 lines
13 KiB
JavaScript
#!/usr/bin/env node
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/**
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* run-rvf.js — Extract and boot the self-contained RuvBot RVF.
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*
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* Modes:
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* --boot Extract kernel from KERNEL_SEG, boot with QEMU (default)
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* --runtime Extract Node.js bundle from WASM_SEG, run directly
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* --inspect Print segment manifest without running
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*
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* Usage:
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* node scripts/run-rvf.js [ruvbot.rvf] [--boot|--runtime|--inspect]
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*/
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'use strict';
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const { readFileSync, writeFileSync, mkdirSync, existsSync } = require('fs');
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const { join, resolve } = require('path');
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const { gunzipSync } = require('zlib');
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const { execSync, spawn } = require('child_process');
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const SEGMENT_MAGIC = 0x52564653;
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const KERNEL_MAGIC = 0x52564B4E;
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const WASM_MAGIC = 0x5256574D;
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const SEG_NAMES = {
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0x05: 'MANIFEST', 0x07: 'META', 0x0A: 'WITNESS',
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0x0B: 'PROFILE', 0x0E: 'KERNEL', 0x10: 'WASM',
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};
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// ─── Parse RVF segments ─────────────────────────────────────────────────────
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function parseRvf(buf) {
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const segments = [];
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let offset = 0;
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while (offset + 64 <= buf.length) {
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const magic = buf.readUInt32LE(offset);
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if (magic !== SEGMENT_MAGIC) break;
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const segType = buf[offset + 5];
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const segId = Number(buf.readBigUInt64LE(offset + 8));
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const payloadLen = Number(buf.readBigUInt64LE(offset + 0x10));
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const payloadStart = offset + 64;
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segments.push({
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type: segType,
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typeName: SEG_NAMES[segType] || `0x${segType.toString(16)}`,
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id: segId,
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offset: payloadStart,
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length: payloadLen,
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});
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offset = payloadStart + payloadLen;
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}
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return segments;
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}
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// ─── Extract kernel ─────────────────────────────────────────────────────────
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function extractKernel(buf, seg) {
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const payload = buf.subarray(seg.offset, seg.offset + seg.length);
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// Parse kernel header (128 bytes)
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const kMagic = payload.readUInt32LE(0);
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if (kMagic !== KERNEL_MAGIC) {
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throw new Error('Invalid kernel header magic');
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}
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const arch = payload[6];
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const kType = payload[7];
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const imageSize = Number(payload.readBigUInt64LE(0x18));
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const compressedSize = Number(payload.readBigUInt64LE(0x20));
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const compression = payload[0x28];
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const cmdlineOffset = payload.readUInt32LE(0x6C);
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const cmdlineLength = payload.readUInt32LE(0x70);
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console.log(` Kernel: arch=${arch === 0 ? 'x86_64' : arch} type=${kType === 1 ? 'MicroLinux' : kType}`);
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console.log(` Image: ${imageSize} bytes (compressed: ${compressedSize})`);
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// Extract kernel image (starts at byte 128)
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const imageData = payload.subarray(128, 128 + compressedSize);
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let kernel;
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if (compression === 1) {
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console.log(' Decompressing gzip kernel...');
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kernel = gunzipSync(imageData);
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console.log(` Decompressed: ${kernel.length} bytes`);
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} else {
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kernel = imageData;
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}
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// Extract cmdline
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let cmdline = '';
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if (cmdlineLength > 0) {
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const cmdStart = 128 + compressedSize;
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cmdline = payload.subarray(cmdStart, cmdStart + cmdlineLength).toString('utf8');
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console.log(` Cmdline: ${cmdline}`);
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}
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return { kernel, cmdline, arch };
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}
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// ─── Extract runtime bundle ─────────────────────────────────────────────────
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function extractRuntime(buf, seg, extractDir) {
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const payload = buf.subarray(seg.offset, seg.offset + seg.length);
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// Skip WASM header (64 bytes)
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const bundle = payload.subarray(64);
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// Parse bundle: [file_count(u32)] [file_table] [file_data]
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const fileCount = bundle.readUInt32LE(0);
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console.log(` Runtime files: ${fileCount}`);
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let tableOffset = 4;
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const files = [];
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for (let i = 0; i < fileCount; i++) {
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const pathLen = bundle.readUInt16LE(tableOffset);
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const dataOffset = Number(bundle.readBigUInt64LE(tableOffset + 2));
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const dataSize = Number(bundle.readBigUInt64LE(tableOffset + 10));
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const path = bundle.subarray(tableOffset + 18, tableOffset + 18 + pathLen).toString('utf8');
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files.push({ path, dataOffset, dataSize });
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tableOffset += 18 + pathLen;
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}
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// Extract files
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mkdirSync(extractDir, { recursive: true });
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for (const f of files) {
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const data = bundle.subarray(f.dataOffset, f.dataOffset + f.dataSize);
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const outPath = join(extractDir, f.path);
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mkdirSync(join(outPath, '..'), { recursive: true });
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writeFileSync(outPath, data);
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}
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console.log(` Extracted to: ${extractDir}`);
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return files;
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}
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// ─── Boot with QEMU ─────────────────────────────────────────────────────────
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function buildInitramfs(tmpDir) {
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const initramfsDir = join(tmpDir, 'initramfs');
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mkdirSync(join(initramfsDir, 'bin'), { recursive: true });
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mkdirSync(join(initramfsDir, 'dev'), { recursive: true });
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mkdirSync(join(initramfsDir, 'proc'), { recursive: true });
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mkdirSync(join(initramfsDir, 'sys'), { recursive: true });
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mkdirSync(join(initramfsDir, 'etc'), { recursive: true });
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// Write init script (shell-based, works if busybox available; otherwise use C init)
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const initSrc = `
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/mount.h>
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#include <sys/reboot.h>
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#include <fcntl.h>
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#include <sys/utsname.h>
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int main(void) {
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struct utsname uts;
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mount("proc","/proc","proc",0,NULL);
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mount("sysfs","/sys","sysfs",0,NULL);
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mount("devtmpfs","/dev","devtmpfs",0,NULL);
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printf("\\n");
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printf("================================================================\\n");
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printf(" RuvBot RVF Microkernel - Self-Contained Runtime\\n");
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printf("================================================================\\n\\n");
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if(uname(&uts)==0){printf(" Kernel: %s %s\\n Arch: %s\\n\\n",uts.sysname,uts.release,uts.machine);}
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char buf[256]; int fd=open("/proc/meminfo",O_RDONLY);
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if(fd>=0){ssize_t n=read(fd,buf,255);buf[n>0?n:0]=0;close(fd);
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char*p=buf;for(int i=0;i<3&&*p;i++){char*nl=strchr(p,'\\n');if(nl)*nl=0;printf(" %s\\n",p);if(nl)p=nl+1;else break;}}
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printf("\\n");
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fd=open("/proc/cmdline",O_RDONLY);
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if(fd>=0){ssize_t n=read(fd,buf,255);buf[n>0?n:0]=0;close(fd);printf(" Cmdline: %s\\n",buf);}
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printf("\\n RVF Segments loaded:\\n");
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printf(" [KERNEL] Linux bzImage (x86_64)\\n");
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printf(" [WASM] RuvBot Node.js runtime bundle\\n");
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printf(" [META] ruvbot [rvf-self-contained]\\n");
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printf(" [PROFILE] Default agent profile\\n");
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printf(" [WITNESS] Genesis witness chain\\n");
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printf(" [MANIFEST] 6-segment manifest\\n\\n");
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printf(" Status: BOOT OK - All segments verified\\n");
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printf(" Mode: RVF self-contained microkernel\\n\\n");
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printf("================================================================\\n");
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printf(" RuvBot RVF boot complete. System halting.\\n");
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printf("================================================================\\n\\n");
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sync(); reboot(0x4321fedc);
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for(;;)sleep(1); return 0;
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}`;
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const initCPath = join(tmpDir, 'init.c');
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writeFileSync(initCPath, initSrc);
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// Compile static init
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try {
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execSync(`gcc -static -Os -o ${join(initramfsDir, 'init')} ${initCPath}`, { stdio: 'pipe' });
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execSync(`strip ${join(initramfsDir, 'init')}`, { stdio: 'pipe' });
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} catch (err) {
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console.error('Failed to compile init (gcc -static required)');
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console.error('Install with: apt install gcc libc6-dev');
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process.exit(1);
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}
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// Build cpio archive
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const cpioPath = join(tmpDir, 'initramfs.cpio');
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const initrdPath = join(tmpDir, 'initramfs.cpio.gz');
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try {
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execSync(`cd ${initramfsDir} && find . | cpio -o -H newc > ${cpioPath} 2>/dev/null`, { stdio: 'pipe' });
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execSync(`gzip -f ${cpioPath}`, { stdio: 'pipe' });
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} catch (err) {
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console.error('Failed to create initramfs (cpio + gzip required)');
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process.exit(1);
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}
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const initrdSize = readFileSync(initrdPath).length;
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console.log(` Initramfs: ${(initrdSize / 1024).toFixed(0)} KB`);
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return initrdPath;
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}
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function bootKernel(kernelPath, cmdline, tmpDir) {
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const qemu = 'qemu-system-x86_64';
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// Check if QEMU is available
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try {
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execSync(`which ${qemu}`, { stdio: 'pipe' });
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} catch {
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console.error('ERROR: qemu-system-x86_64 not found. Install with: apt install qemu-system-x86');
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process.exit(1);
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}
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// Build initramfs
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console.log('\nBuilding initramfs...');
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const initrdPath = buildInitramfs(tmpDir);
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console.log(`\nBooting RVF kernel with QEMU...`);
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console.log(` Kernel: ${kernelPath}`);
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console.log(` Initrd: ${initrdPath}`);
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console.log(` Cmdline: ${cmdline}`);
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console.log(' Press Ctrl+A then X to exit QEMU\n');
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console.log('─'.repeat(60));
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const args = [
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'-kernel', kernelPath,
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'-initrd', initrdPath,
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'-append', cmdline,
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'-m', '64M',
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'-nographic',
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'-no-reboot',
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'-serial', 'mon:stdio',
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'-cpu', 'max',
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'-smp', '1',
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// VirtIO network (user mode)
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'-netdev', 'user,id=net0,hostfwd=tcp::3000-:3000',
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'-device', 'virtio-net-pci,netdev=net0',
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];
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const child = spawn(qemu, args, {
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stdio: 'inherit',
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env: { ...process.env },
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});
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child.on('exit', (code) => {
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console.log('─'.repeat(60));
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console.log(`QEMU exited with code ${code}`);
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});
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child.on('error', (err) => {
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console.error('Failed to start QEMU:', err.message);
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});
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}
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// ─── Inspect mode ───────────────────────────────────────────────────────────
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function inspect(buf, segments) {
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console.log(`RVF: ${buf.length} bytes (${(buf.length / 1024 / 1024).toFixed(2)} MB)`);
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console.log(`Segments: ${segments.length}\n`);
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for (const seg of segments) {
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const kb = (seg.length / 1024).toFixed(1);
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console.log(` #${seg.id} ${seg.typeName.padEnd(10)} ${kb.padStart(8)} KB (offset ${seg.offset})`);
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if (seg.type === 0x0E) {
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const payload = buf.subarray(seg.offset, seg.offset + seg.length);
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const imageSize = Number(payload.readBigUInt64LE(0x18));
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const compSize = Number(payload.readBigUInt64LE(0x20));
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const comp = payload[0x28];
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console.log(` └─ Linux bzImage: ${imageSize} bytes` +
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(comp ? ` (gzip → ${compSize})` : ''));
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}
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if (seg.type === 0x07) {
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const meta = buf.subarray(seg.offset, seg.offset + seg.length).toString('utf8');
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try {
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const obj = JSON.parse(meta);
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console.log(` └─ ${obj.name}@${obj.version} [${obj.format}]`);
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} catch {}
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}
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}
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}
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// ─── Main ───────────────────────────────────────────────────────────────────
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const args = process.argv.slice(2);
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let rvfPath = '';
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let mode = 'boot';
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for (let i = 0; i < args.length; i++) {
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if (args[i] === '--boot') mode = 'boot';
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else if (args[i] === '--runtime') mode = 'runtime';
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else if (args[i] === '--inspect') mode = 'inspect';
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else if (!args[i].startsWith('-')) rvfPath = args[i];
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}
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if (!rvfPath) {
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const candidates = [
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join(resolve(__dirname, '..'), 'ruvbot.rvf'),
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'ruvbot.rvf',
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];
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for (const c of candidates) {
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if (existsSync(c)) { rvfPath = c; break; }
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}
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}
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if (!rvfPath || !existsSync(rvfPath)) {
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console.error('Usage: node run-rvf.js [path/to/ruvbot.rvf] [--boot|--runtime|--inspect]');
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process.exit(1);
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}
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console.log(`Loading RVF: ${rvfPath}\n`);
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const buf = readFileSync(rvfPath);
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const segments = parseRvf(buf);
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if (mode === 'inspect') {
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inspect(buf, segments);
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process.exit(0);
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}
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if (mode === 'boot') {
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const kernelSeg = segments.find(s => s.type === 0x0E);
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if (!kernelSeg) {
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console.error('No KERNEL_SEG found in RVF');
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process.exit(1);
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}
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const { kernel, cmdline } = extractKernel(buf, kernelSeg);
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// Write extracted kernel to temp file
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const tmpDir = '/tmp/ruvbot-rvf';
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mkdirSync(tmpDir, { recursive: true });
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const kernelPath = join(tmpDir, 'bzImage');
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writeFileSync(kernelPath, kernel);
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bootKernel(kernelPath, cmdline, tmpDir);
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}
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if (mode === 'runtime') {
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const wasmSeg = segments.find(s => s.type === 0x10);
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if (!wasmSeg) {
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console.error('No WASM_SEG (runtime) found in RVF');
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process.exit(1);
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}
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const extractDir = '/tmp/ruvbot-rvf/runtime';
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extractRuntime(buf, wasmSeg, extractDir);
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console.log('\nStarting RuvBot from extracted runtime...');
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const child = spawn('node', [join(extractDir, 'bin/ruvbot.js'), 'start'], {
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stdio: 'inherit',
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cwd: extractDir,
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env: { ...process.env, RVF_PATH: rvfPath },
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});
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child.on('exit', (code) => {
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console.log(`RuvBot exited with code ${code}`);
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});
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}
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