78 lines
3.6 KiB
JavaScript
78 lines
3.6 KiB
JavaScript
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// Installs the pinned s3d release into Pithos's own bin folder. The digests are
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// GitHub's published sha256 for each release asset; a download that does not
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// match is discarded before anything is written to the bin folder.
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import fs from 'node:fs';
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import path from 'node:path';
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import crypto from 'node:crypto';
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import zlib from 'node:zlib';
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export const S3D_VERSION = '0.2.0';
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const ASSETS = {
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'win32-x64': { file: 's3d_windows_amd64.zip', sha256: '239356ef55228d03aa1889c7208357b83faf66947ade2cba4f7a3893c632c473' },
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'linux-x64': { file: 's3d_linux_amd64.zip', sha256: 'e537d68be8b6749e3e239d572c497a4f1ebc81ef5a3b70d5ec3cc9ffa6498e73' },
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'linux-arm64': { file: 's3d_linux_arm64.zip', sha256: '76848764f09922f31489c809514cdc928b3882836d6e5b64dcac085a84b4958b' },
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'darwin-x64': { file: 's3d_darwin_amd64.zip', sha256: 'd7fe282efab35242b001ed9040d833334034682225b4c2b6b2eda67ecca8992e' },
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'darwin-arm64': { file: 's3d_darwin_arm64.zip', sha256: '9eb6b73cb30b5b6b54fbbc583af6f7d9e56a30c55247ac70568918a1c98a3353' },
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};
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export function assetForPlatform() {
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return ASSETS[`${process.platform}-${process.arch}`] || null;
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}
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export async function installS3d(binDir, onProgress = () => {}) {
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const asset = assetForPlatform();
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if (!asset) throw new Error(`no s3d release for ${process.platform}-${process.arch}`);
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const url = `https://github.com/SiaFoundation/s3d/releases/download/v${S3D_VERSION}/${asset.file}`;
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onProgress({ phase: 'download', url });
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const res = await fetch(url, { redirect: 'follow' });
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if (!res.ok) throw new Error(`download failed: HTTP ${res.status}`);
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const zip = Buffer.from(await res.arrayBuffer());
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const digest = crypto.createHash('sha256').update(zip).digest('hex');
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if (digest !== asset.sha256) throw new Error(`checksum mismatch for ${asset.file} (got ${digest})`);
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onProgress({ phase: 'extract' });
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const exe = process.platform === 'win32' ? 's3d.exe' : 's3d';
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const data = extractFromZip(zip, (name) => path.basename(name) === exe);
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if (!data) throw new Error(`${exe} not found in ${asset.file}`);
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fs.mkdirSync(binDir, { recursive: true });
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const target = path.join(binDir, exe);
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const tmp = target + '.new';
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fs.writeFileSync(tmp, data, { mode: 0o755 });
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fs.renameSync(tmp, target);
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onProgress({ phase: 'done', path: target });
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return target;
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}
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// Minimal zip reader: walks the central directory and inflates one entry.
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function extractFromZip(buf, match) {
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let eocd = -1;
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for (let i = buf.length - 22; i >= Math.max(0, buf.length - 65557); i--) {
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if (buf.readUInt32LE(i) === 0x06054b50) { eocd = i; break; }
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}
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if (eocd < 0) throw new Error('not a zip file');
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const count = buf.readUInt16LE(eocd + 10);
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let p = buf.readUInt32LE(eocd + 16);
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for (let n = 0; n < count; n++) {
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if (buf.readUInt32LE(p) !== 0x02014b50) throw new Error('corrupt zip directory');
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const method = buf.readUInt16LE(p + 10);
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const csize = buf.readUInt32LE(p + 20);
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const nameLen = buf.readUInt16LE(p + 28);
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const extraLen = buf.readUInt16LE(p + 30);
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const commentLen = buf.readUInt16LE(p + 32);
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const local = buf.readUInt32LE(p + 42);
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const name = buf.toString('utf8', p + 46, p + 46 + nameLen);
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p += 46 + nameLen + extraLen + commentLen;
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if (!match(name)) continue;
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const lName = buf.readUInt16LE(local + 26);
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const lExtra = buf.readUInt16LE(local + 28);
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const start = local + 30 + lName + lExtra;
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const raw = buf.subarray(start, start + csize);
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if (method === 0) return Buffer.from(raw);
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if (method === 8) return zlib.inflateRawSync(raw);
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throw new Error(`unsupported zip method ${method}`);
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}
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return null;
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}
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