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Replace shell-based install with in-process binary downloader

Browse Source 
Fetches the platform-specific native binary directly — npm registry
first (sha512-verified tarball, streamed through a minimal in-tree
tar parser) with the Anthropic CDN as a fallback (sha256-verified raw
binary). Writes to context.globalStorageUri/bin/claude[.exe] and
auto-sets executable.path so there's no PATH, sudo, PowerShell
execution-policy, npm EACCES, or Node-version failure modes left.

Adds typed DownloaderError codes (UNSUPPORTED_PLATFORM / NETWORK /
INTEGRITY / WRITE / CANCELLED / AGGREGATE) and threads source /
version / npmCode / cdnCode into analytics so install failures are
finally bucketable instead of collapsed under "the shell command
failed". Error messages are scrubbed of user paths to keep analytics
PII-free.

Fixes a Windows path-with-spaces edge case by skipping cmd.exe shell
wrapping when spawning claude with an absolute executable.path.

Ships 28 tests: 24 unit (tar parser, platform detection, error
helpers) and 4 integration that hit real npm + real CDN end-to-end.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
andrepimenta
2026-04-24 21:41:53 +01:00
parent c11224310d
commit 6858f6a6c6
9 changed files with 1330 additions and 83 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
.vscodeignore
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@@ -16,3 +16,4 @@ node_modules
mcp-permissions.js mcp-permissions.js
backup-files backup-files
build build
**/test/**

14
CHANGELOG.md
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@@ -4,6 +4,20 @@ All notable changes to the "claude-code-chat" extension will be documented in th
Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how to structure this file. Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how to structure this file.
## [2.0.7] - 2026-04-24
### 🚀 Features Added
- **In-process installer**: Installing Claude Code no longer shells out to PowerShell, `curl | bash`, or `npm install -g`. The extension now fetches the platform-specific native binary directly (npm registry first, with Anthropic's CDN as a fallback), verifies the download with sha512/sha256, and writes it into the extension's own storage. Zero PATH, sudo, execution-policy, Node-version, or shell-quoting dependencies — if the extension installed, installing Claude works.
- **Progress updates during install**: The install modal now reports "Looking up…", "Downloading… (X%)", "Verifying…", and "Installing…" as it runs, with an automatic retry message if it falls back to the CDN source.
- **Cleaner install analytics**: `Install success` now includes `source` (npm/cdn) and `version`; `Install failed` now includes a typed `errorCode` (NETWORK / INTEGRITY / WRITE / AGGREGATE / UNSUPPORTED_PLATFORM) so failure buckets are meaningful instead of just "the shell command failed".
### 🐛 Bug Fixes
- **Paths with spaces on Windows**: Fixed an edge case where the main Claude spawn could fail when the executable path contained spaces (e.g. `C:\Users\Some User\…`). Absolute paths now bypass `cmd.exe` wrapping entirely.
### 🔧 Technical Improvements
- New `src/claudeDownloader.ts` module: self-contained, no new runtime dependencies. Includes a minimal in-tree tar parser so we can stream-extract the one binary we need from the npm tarball without bundling a tar library.
- Removed the old PowerShell / curl / npm install paths and the associated `_getKnownInstallLocation` / `_checkClaudeAvailable` helpers — the download flow now owns the install location end-to-end.
## [2.0.6] - 2026-04-23 ## [2.0.6] - 2026-04-23
### 🚀 Features Added ### 🚀 Features Added

4
package-lock.json generated
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@@ -1,12 +1,12 @@
{ {
"name": "claude-code-chat", "name": "claude-code-chat",
"version": "2.0.6", "version": "2.0.7",
"lockfileVersion": 3, "lockfileVersion": 3,
"requires": true, "requires": true,
"packages": { "packages": {
"": { "": {
"name": "claude-code-chat", "name": "claude-code-chat",
"version": "2.0.6", "version": "2.0.7",
"license": "SEE LICENSE IN LICENSE", "license": "SEE LICENSE IN LICENSE",
"devDependencies": { "devDependencies": {
"@types/mocha": "^10.0.10", "@types/mocha": "^10.0.10",

6
package.json
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@@ -2,7 +2,7 @@
"name": "claude-code-chat", "name": "claude-code-chat",
"displayName": "Chat for Claude Code", "displayName": "Chat for Claude Code",
"description": "Beautiful Claude Code Chat Interface for VS Code", "description": "Beautiful Claude Code Chat Interface for VS Code",
"version": "2.0.6", "version": "2.0.7",
"publisher": "AndrePimenta", "publisher": "AndrePimenta",
"author": "Andre Pimenta", "author": "Andre Pimenta",
"repository": { "repository": {
@@ -215,7 +215,9 @@
"watch": "tsc -watch -p ./", "watch": "tsc -watch -p ./",
"pretest": "npm run compile && npm run lint", "pretest": "npm run compile && npm run lint",
"lint": "eslint src", "lint": "eslint src",
"test": "vscode-test" "test": "vscode-test",
"test:downloader": "npm run compile && mocha --ui tdd \"out/test/downloader*.test.js\" --reporter spec --timeout 360000",
"test:downloader:unit": "npm run compile && mocha --ui tdd out/test/downloader.test.js --reporter spec"
}, },
"devDependencies": { "devDependencies": {
"@types/mocha": "^10.0.10", "@types/mocha": "^10.0.10",

662
src/claudeDownloader.ts Normal file
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@@ -0,0 +1,662 @@
// Self-contained downloader for the Claude Code native binary.
// Tries the npm registry tarball first (smaller over the wire thanks to gzip),
// falls back to Anthropic's CDN (downloads.claude.ai) on any npm failure.
//
// Replaces the previous shell-based install flows (curl|bash, irm|iex, npm -g)
// so users never see execution-policy, EACCES, missing-bash, or Node-version
// failure modes. Everything runs in-process using Node built-ins only.
import * as https from 'https';
import * as http from 'http';
import * as fs from 'fs';
import * as path from 'path';
import * as crypto from 'crypto';
import * as zlib from 'zlib';
import * as os from 'os';
import * as cp from 'child_process';
import { URL } from 'url';
const DEFAULT_NPM_REGISTRY = 'https://registry.npmjs.org';
const DEFAULT_CDN_BASE = 'https://downloads.claude.ai/claude-code-releases';
const NPM_PACKAGE_PREFIX = '@anthropic-ai/claude-code-';
const META_TIMEOUT_MS = 30_000;
const PROGRESS_THROTTLE_MS = 250;
export type DownloaderErrorCode =
| 'UNSUPPORTED_PLATFORM'
| 'NETWORK'
| 'INTEGRITY'
| 'WRITE'
| 'CANCELLED'
| 'AGGREGATE';
export interface PlatformKey {
key: string; // 'darwin-arm64' | 'linux-x64-musl' | 'win32-x64' | ...
binaryName: string; // 'claude' | 'claude.exe'
tarEntry: string; // 'package/claude' | 'package/claude.exe'
}
export interface DownloadProgress {
phase: 'resolving' | 'downloading' | 'verifying' | 'installing' | 'fallback';
source?: 'npm' | 'cdn';
loaded?: number;
total?: number;
message?: string;
}
export interface DownloadOptions {
destDir: string;
onProgress?: (p: DownloadProgress) => void;
signal?: AbortSignal;
/** @internal — override the npm registry base (for tests). */
npmRegistry?: string;
/** @internal — override the Anthropic CDN base (for tests). */
cdnBase?: string;
}
export interface DownloadResult {
binaryPath: string;
version: string;
source: 'npm' | 'cdn';
bytesDownloaded: number;
}
export class DownloaderError extends Error {
public readonly code: DownloaderErrorCode;
public readonly details?: Record<string, string | number>;
public readonly cause?: unknown;
constructor(code: DownloaderErrorCode, message: string, details?: Record<string, string | number>, cause?: unknown) {
super(message);
this.name = 'DownloaderError';
this.code = code;
this.details = details;
this.cause = cause;
}
}
// Extract the OS-level error code (EACCES/EBUSY/ENOSPC/ENOTFOUND/etc.) from an
// arbitrary error, falling back to a short constant. We never inline err.message
// into DownloaderError.message because Node's fs errors interpolate the offending
// path — e.g. "EACCES: permission denied, open '/Users/<name>/Library/...'" —
// which would exfiltrate the user's home directory in analytics.
function _errCode(err: unknown, fallback: string): string {
if (err && typeof err === 'object') {
const c = (err as { code?: unknown }).code;
if (typeof c === 'string' && c) {return c;}
}
return fallback;
}
// Invoke the caller's onProgress callback without letting a user throw crash
// the download stream. Throws inside a stream 'data' handler otherwise surface
// as uncaughtException on the extension host.
function _safeProgress(cb: ((p: DownloadProgress) => void) | undefined, p: DownloadProgress): void {
if (!cb) {return;}
try {
cb(p);
} catch {
// swallow — progress reporting is best-effort
}
}
// ------------- Platform detection -------------
export function detectPlatform(): PlatformKey | null {
const platform = process.platform;
let arch = os.arch();
if (platform === 'darwin') {
// Rosetta 2: x64 Node on Apple Silicon should use the arm64 binary —
// the x64 build needs AVX which Rosetta doesn't emulate.
if (arch === 'x64') {
try {
const r = cp.spawnSync('sysctl', ['-n', 'sysctl.proc_translated'], { encoding: 'utf8' });
if (r.stdout && r.stdout.trim() === '1') {
arch = 'arm64';
}
} catch {
// sysctl missing — treat as non-Rosetta
}
}
if (arch !== 'x64' && arch !== 'arm64') {return null;}
return { key: `darwin-${arch}`, binaryName: 'claude', tarEntry: 'package/claude' };
}
if (platform === 'linux') {
if (arch !== 'x64' && arch !== 'arm64') {return null;}
const musl = _detectMusl();
const key = `linux-${arch}${musl ? '-musl' : ''}`;
return { key, binaryName: 'claude', tarEntry: 'package/claude' };
}
if (platform === 'win32') {
if (arch !== 'x64' && arch !== 'arm64') {return null;}
return { key: `win32-${arch}`, binaryName: 'claude.exe', tarEntry: 'package/claude.exe' };
}
return null;
}
function _detectMusl(): boolean {
try {
const report = (process as unknown as { report?: { getReport?: () => { header?: { glibcVersionRuntime?: string } } } }).report;
if (report && typeof report.getReport === 'function') {
const r = report.getReport();
return !r.header?.glibcVersionRuntime;
}
} catch {
// fall through to file-presence check
}
try {
if (fs.existsSync('/lib/libc.musl-x86_64.so.1') || fs.existsSync('/lib/libc.musl-aarch64.so.1')) {
return true;
}
} catch {
// fall through
}
return false;
}
// ------------- HTTP helpers -------------
function _checkAborted(signal: AbortSignal | undefined): void {
if (signal?.aborted) {
throw new DownloaderError('CANCELLED', 'Cancelled');
}
}
function _httpGet(urlStr: string, signal?: AbortSignal, redirectsRemaining = 5): Promise<http.IncomingMessage> {
return new Promise((resolve, reject) => {
_checkAborted(signal);
const parsed = new URL(urlStr);
// Pick http or https by scheme so tests can target a local http server.
const getter = parsed.protocol === 'http:' ? http.get : https.get;
const req = getter(urlStr, { headers: { 'user-agent': 'claude-code-chat-vscode' } }, (res) => {
const status = res.statusCode ?? 0;
if ([301, 302, 303, 307, 308].includes(status) && res.headers.location) {
res.resume();
if (redirectsRemaining <= 0) {
reject(new DownloaderError('NETWORK', 'Too many redirects', { host: parsed.host }));
return;
}
const next = new URL(res.headers.location, urlStr).toString();
_httpGet(next, signal, redirectsRemaining - 1).then(resolve, reject);
return;
}
if (status < 200 || status >= 300) {
res.resume();
reject(new DownloaderError('NETWORK', `HTTP ${status} from ${parsed.host}`, { status, host: parsed.host }));
return;
}
resolve(res);
});
req.on('error', (err) => {
const code = _errCode(err, 'NETERR');
reject(new DownloaderError('NETWORK', `Network error (${code}) from ${parsed.host}`, { host: parsed.host, code }, err));
});
const onAbort = () => {
req.destroy();
reject(new DownloaderError('CANCELLED', 'Cancelled'));
};
signal?.addEventListener('abort', onAbort, { once: true });
});
}
async function _fetchBuffer(urlStr: string, signal?: AbortSignal): Promise<Buffer> {
const res = await _httpGet(urlStr, signal);
return new Promise<Buffer>((resolve, reject) => {
const chunks: Buffer[] = [];
const timer = setTimeout(() => {
res.destroy();
reject(new DownloaderError('NETWORK', 'Metadata request timed out'));
}, META_TIMEOUT_MS);
res.on('data', (c: Buffer) => chunks.push(c));
res.on('end', () => { clearTimeout(timer); resolve(Buffer.concat(chunks)); });
res.on('error', (err) => { clearTimeout(timer); reject(new DownloaderError('NETWORK', `Response error (${_errCode(err, 'NETERR')})`, { code: _errCode(err, 'NETERR') }, err)); });
});
}
async function _fetchText(url: string, signal?: AbortSignal): Promise<string> {
return (await _fetchBuffer(url, signal)).toString('utf8');
}
async function _fetchJson<T = unknown>(url: string, signal?: AbortSignal): Promise<T> {
const body = await _fetchText(url, signal);
try {
return JSON.parse(body) as T;
} catch (err) {
throw new DownloaderError('NETWORK', 'Invalid JSON in response', undefined, err);
}
}
// ------------- Tar extraction (minimal, ustar-only) -------------
//
// Extracts a single file by name from a gunzipped tar stream. Npm-published
// tarballs use plain ustar with short filenames, so we don't handle GNU long-
// link extensions, PAX headers, or sparse files. If the target entry isn't
// found by end of stream, we throw INTEGRITY — the tarball shape is wrong.
function _parseOctal(buf: Buffer): number {
// Octal ASCII, null/space terminated.
let end = 0;
while (end < buf.length && buf[end] !== 0 && buf[end] !== 0x20) {end++;}
const s = buf.subarray(0, end).toString('ascii').trim();
return s.length ? parseInt(s, 8) : 0;
}
function _readTarHeader(block: Buffer): { name: string; size: number; isRegularFile: boolean } {
const name = block.subarray(0, 100).toString('utf8').replace(/\0+$/, '');
const prefix = block.subarray(345, 500).toString('utf8').replace(/\0+$/, '');
const rawSize = _parseOctal(block.subarray(124, 136));
// Defensive: guard against NaN / negative / non-finite sizes from malformed
// tarballs before they poison our skip-byte arithmetic downstream.
const size = Number.isFinite(rawSize) && rawSize >= 0 ? rawSize : -1;
const typeFlag = String.fromCharCode(block[156] || 0);
const isRegularFile = typeFlag === '0' || typeFlag === '\0';
const fullName = prefix ? `${prefix}/${name}` : name;
return { name: fullName, size, isRegularFile };
}
interface TarExtractState {
found: boolean;
bytesWritten: number;
buffer: Buffer;
// When >0, we are in the middle of the target file's data, and this many
// bytes still need to be written to out.
remainingFileBytes: number;
// When >0, we are skipping past a non-target file's data+padding.
remainingSkipBytes: number;
}
function _processTarChunk(state: TarExtractState, chunk: Buffer, entryName: string, out: fs.WriteStream): void {
state.buffer = state.buffer.length ? Buffer.concat([state.buffer, chunk]) : chunk;
while (true) {
if (state.remainingFileBytes > 0) {
const take = Math.min(state.remainingFileBytes, state.buffer.length);
if (take === 0) {return;}
out.write(state.buffer.subarray(0, take));
state.bytesWritten += take;
state.remainingFileBytes -= take;
state.buffer = state.buffer.subarray(take);
if (state.remainingFileBytes === 0) {
// After the file data, skip the 512-byte padding tail.
const padLen = (512 - (state.bytesWritten % 512)) % 512;
state.remainingSkipBytes = padLen;
}
continue;
}
if (state.remainingSkipBytes > 0) {
const skip = Math.min(state.remainingSkipBytes, state.buffer.length);
if (skip === 0) {return;}
state.remainingSkipBytes -= skip;
state.buffer = state.buffer.subarray(skip);
continue;
}
if (state.buffer.length < 512) {return;}
const header = state.buffer.subarray(0, 512);
// End-of-archive is two consecutive zero-blocks. A single zero-block
// also terminates our scan safely.
if (header[0] === 0) {return;}
const { name, size, isRegularFile } = _readTarHeader(header);
state.buffer = state.buffer.subarray(512);
// Size < 0 means the header was malformed (NaN / negative octal). Bail so
// we don't poison the skip arithmetic — the outer INTEGRITY check will fire.
if (size < 0) {throw new DownloaderError('INTEGRITY', 'Malformed tar header (invalid size)');}
if (name === entryName && isRegularFile) {
state.found = true;
state.remainingFileBytes = size;
state.bytesWritten = 0;
} else {
// Skip this file's data + padding.
const padded = Math.ceil(size / 512) * 512;
state.remainingSkipBytes = padded;
}
}
}
// ------------- npm source -------------
interface NpmPackageMetadata {
'dist-tags': { latest: string; [tag: string]: string };
versions: Record<string, { dist: { tarball: string; integrity: string } }>;
}
async function _downloadFromNpm(platform: PlatformKey, opts: DownloadOptions): Promise<DownloadResult> {
const onProgress = opts.onProgress;
const registry = opts.npmRegistry || DEFAULT_NPM_REGISTRY;
_safeProgress(onProgress, { phase: 'resolving', source: 'npm', message: 'Looking up latest version' });
const metaUrl = `${registry}/${NPM_PACKAGE_PREFIX}${platform.key}`;
const meta = await _fetchJson<NpmPackageMetadata>(metaUrl, opts.signal);
const version = meta['dist-tags']?.latest;
if (!version) {throw new DownloaderError('NETWORK', 'npm metadata missing dist-tags.latest');}
const versionMeta = meta.versions?.[version];
if (!versionMeta?.dist?.tarball || !versionMeta.dist.integrity) {
throw new DownloaderError('NETWORK', 'npm metadata missing tarball or integrity');
}
const tarballUrl = versionMeta.dist.tarball;
const integrity = versionMeta.dist.integrity;
const dashIdx = integrity.indexOf('-');
if (dashIdx < 0) {throw new DownloaderError('INTEGRITY', 'Unrecognized integrity format');}
const algo = integrity.slice(0, dashIdx);
const expectedB64 = integrity.slice(dashIdx + 1);
if (!['sha256', 'sha384', 'sha512'].includes(algo)) {
throw new DownloaderError('INTEGRITY', `Unsupported hash algorithm: ${algo}`, { algo });
}
const tempPath = path.join(opts.destDir, `.claude.download.${process.pid}.${Date.now()}`);
const writeStream = fs.createWriteStream(tempPath);
const hash = crypto.createHash(algo);
const gunzip = zlib.createGunzip();
const state: TarExtractState = {
found: false,
bytesWritten: 0,
buffer: Buffer.alloc(0),
remainingFileBytes: 0,
remainingSkipBytes: 0,
};
_safeProgress(onProgress, { phase: 'downloading', source: 'npm', loaded: 0 });
let res: http.IncomingMessage;
try {
res = await _httpGet(tarballUrl, opts.signal);
} catch (err) {
writeStream.destroy();
await _safeUnlink(tempPath);
throw err;
}
const total = Number(res.headers['content-length']) || undefined;
let bytesDownloaded = 0;
let lastProgressAt = 0;
const extractPromise = new Promise<void>((resolve, reject) => {
gunzip.on('data', (chunk: Buffer) => {
try {
_processTarChunk(state, chunk, platform.tarEntry, writeStream);
} catch (err) {
reject(err);
}
});
gunzip.on('end', () => resolve());
gunzip.on('error', (err) => reject(new DownloaderError('INTEGRITY', 'Tarball decompression failed', undefined, err)));
});
res.on('data', (chunk: Buffer) => {
bytesDownloaded += chunk.length;
hash.update(chunk);
const now = Date.now();
if (now - lastProgressAt > PROGRESS_THROTTLE_MS) {
lastProgressAt = now;
_safeProgress(onProgress, { phase: 'downloading', source: 'npm', loaded: bytesDownloaded, total });
}
});
const responseDone = new Promise<void>((resolve, reject) => {
res.on('end', () => resolve());
res.on('error', (err) => reject(new DownloaderError('NETWORK', `Response stream error (${_errCode(err, 'NETERR')})`, { code: _errCode(err, 'NETERR') }, err)));
});
const writeDone = new Promise<void>((resolve, reject) => {
writeStream.on('close', () => resolve());
writeStream.on('error', (err) => reject(new DownloaderError('WRITE', `Write failed (${_errCode(err, 'WRITEERR')})`, { code: _errCode(err, 'WRITEERR') }, err)));
});
const onAbort = () => {
res.destroy();
gunzip.destroy();
writeStream.destroy();
};
opts.signal?.addEventListener('abort', onAbort, { once: true });
res.pipe(gunzip);
try {
await Promise.all([responseDone, extractPromise]);
writeStream.end();
await writeDone;
} catch (err) {
// Tear down both ends explicitly — leaving res piping after an extract
// failure would leak bandwidth and memory.
res.destroy();
gunzip.destroy();
writeStream.destroy();
await _safeUnlink(tempPath);
if (opts.signal?.aborted) {throw new DownloaderError('CANCELLED', 'Cancelled');}
throw err;
}
_safeProgress(onProgress, { phase: 'verifying', source: 'npm', loaded: bytesDownloaded, total });
if (!state.found) {
await _safeUnlink(tempPath);
throw new DownloaderError('INTEGRITY', `Tarball missing expected entry ${platform.tarEntry}`, { platformKey: platform.key });
}
const computed = hash.digest('base64');
if (computed !== expectedB64) {
await _safeUnlink(tempPath);
throw new DownloaderError('INTEGRITY', 'npm tarball hash mismatch', { algo });
}
_safeProgress(onProgress, { phase: 'installing', source: 'npm' });
const finalPath = await _finalize(tempPath, path.join(opts.destDir, platform.binaryName));
return { binaryPath: finalPath, version, source: 'npm', bytesDownloaded };
}
// ------------- CDN source -------------
interface CdnManifest {
platforms: Record<string, { checksum: string }>;
}
async function _downloadFromCdn(platform: PlatformKey, opts: DownloadOptions): Promise<DownloadResult> {
const onProgress = opts.onProgress;
const base = opts.cdnBase || DEFAULT_CDN_BASE;
_safeProgress(onProgress, { phase: 'resolving', source: 'cdn', message: 'Looking up latest version' });
const versionRaw = (await _fetchText(`${base}/latest`, opts.signal)).trim();
if (!/^\d+\.\d+\.\d+(-[\w.-]+)?$/.test(versionRaw)) {
throw new DownloaderError('NETWORK', 'CDN returned invalid version string');
}
const version = versionRaw;
const manifest = await _fetchJson<CdnManifest>(`${base}/${version}/manifest.json`, opts.signal);
const expectedHex = manifest.platforms?.[platform.key]?.checksum;
if (!expectedHex || !/^[a-f0-9]{64}$/i.test(expectedHex)) {
throw new DownloaderError('INTEGRITY', `CDN manifest missing checksum for ${platform.key}`, { platformKey: platform.key });
}
const binName = process.platform === 'win32' ? 'claude.exe' : 'claude';
const binUrl = `${base}/${version}/${platform.key}/${binName}`;
const tempPath = path.join(opts.destDir, `.claude.download.${process.pid}.${Date.now()}`);
const writeStream = fs.createWriteStream(tempPath);
const hash = crypto.createHash('sha256');
_safeProgress(onProgress, { phase: 'downloading', source: 'cdn', loaded: 0 });
let res: http.IncomingMessage;
try {
res = await _httpGet(binUrl, opts.signal);
} catch (err) {
writeStream.destroy();
await _safeUnlink(tempPath);
throw err;
}
const total = Number(res.headers['content-length']) || undefined;
let bytesDownloaded = 0;
let lastProgressAt = 0;
const onAbort = () => {
res.destroy();
writeStream.destroy();
};
opts.signal?.addEventListener('abort', onAbort, { once: true });
const responseDone = new Promise<void>((resolve, reject) => {
res.on('data', (chunk: Buffer) => {
bytesDownloaded += chunk.length;
hash.update(chunk);
const now = Date.now();
if (now - lastProgressAt > PROGRESS_THROTTLE_MS) {
lastProgressAt = now;
_safeProgress(onProgress, { phase: 'downloading', source: 'cdn', loaded: bytesDownloaded, total });
}
});
res.on('end', () => resolve());
res.on('error', (err) => reject(new DownloaderError('NETWORK', `Response stream error (${_errCode(err, 'NETERR')})`, { code: _errCode(err, 'NETERR') }, err)));
});
// Wait for 'close' (fd released), not just 'finish' (data flushed). Matters on
// Windows — rename() fails with EBUSY if the underlying handle is still open.
const writeDone = new Promise<void>((resolve, reject) => {
writeStream.on('close', () => resolve());
writeStream.on('error', (err) => reject(new DownloaderError('WRITE', `Write failed (${_errCode(err, 'WRITEERR')})`, { code: _errCode(err, 'WRITEERR') }, err)));
});
res.pipe(writeStream);
try {
await responseDone;
writeStream.end();
await writeDone;
} catch (err) {
res.destroy();
writeStream.destroy();
await _safeUnlink(tempPath);
if (opts.signal?.aborted) {throw new DownloaderError('CANCELLED', 'Cancelled');}
throw err;
}
_safeProgress(onProgress, { phase: 'verifying', source: 'cdn', loaded: bytesDownloaded, total });
const computedHex = hash.digest('hex');
if (computedHex.toLowerCase() !== expectedHex.toLowerCase()) {
await _safeUnlink(tempPath);
throw new DownloaderError('INTEGRITY', 'CDN binary hash mismatch');
}
_safeProgress(onProgress, { phase: 'installing', source: 'cdn' });
const finalPath = await _finalize(tempPath, path.join(opts.destDir, platform.binaryName));
return { binaryPath: finalPath, version, source: 'cdn', bytesDownloaded };
}
// ------------- Finalize (chmod + atomic rename) -------------
async function _finalize(tempPath: string, finalPath: string): Promise<string> {
if (process.platform !== 'win32') {
try {
fs.chmodSync(tempPath, 0o755);
} catch (err) {
await _safeUnlink(tempPath);
const code = _errCode(err, 'CHMODERR');
throw new DownloaderError('WRITE', `chmod failed (${code})`, { code }, err);
}
}
try {
fs.renameSync(tempPath, finalPath);
} catch (err) {
const code = _errCode(err, 'RENAMEERR');
// EXDEV means temp and final are on different filesystems (shouldn't happen,
// but defensive).
if (code === 'EXDEV') {
try {
fs.copyFileSync(tempPath, finalPath);
await _safeUnlink(tempPath);
return finalPath;
} catch (copyErr) {
await _safeUnlink(tempPath);
const ccode = _errCode(copyErr, 'COPYERR');
throw new DownloaderError('WRITE', `Copy to final path failed (${ccode})`, { code: ccode }, copyErr);
}
}
await _safeUnlink(tempPath);
// EBUSY/EPERM on Windows means the target is currently running — we can't replace it.
if (code === 'EBUSY' || code === 'EPERM') {
throw new DownloaderError('WRITE', 'Target binary is in use. Close any running claude sessions and try again.', { code }, err);
}
throw new DownloaderError('WRITE', `Rename failed (${code})`, { code }, err);
}
return finalPath;
}
async function _safeUnlink(p: string): Promise<void> {
try {
await fs.promises.unlink(p);
} catch {
// ignore — cleanup best-effort
}
}
// ------------- Public orchestrator -------------
export async function downloadClaude(opts: DownloadOptions): Promise<DownloadResult> {
const platform = detectPlatform();
if (!platform) {
throw new DownloaderError('UNSUPPORTED_PLATFORM', `Unsupported platform: ${process.platform}/${os.arch()}`, {
platform: process.platform,
arch: os.arch(),
});
}
try {
fs.mkdirSync(opts.destDir, { recursive: true });
} catch (err) {
const code = _errCode(err, 'MKDIRERR');
// Never include the path — destDir is under the user's home directory and
// would leak the username if posted to analytics.
throw new DownloaderError('WRITE', `Could not create download directory (${code})`, { code }, err);
}
let npmErr: unknown;
try {
return await _downloadFromNpm(platform, opts);
} catch (err) {
if (err instanceof DownloaderError && err.code === 'CANCELLED') {throw err;}
npmErr = err;
_safeProgress(opts.onProgress, { phase: 'fallback', source: 'cdn', message: 'npm source failed — retrying via CDN' });
}
try {
return await _downloadFromCdn(platform, opts);
} catch (cdnErr) {
if (cdnErr instanceof DownloaderError && cdnErr.code === 'CANCELLED') {throw cdnErr;}
const npmCode = npmErr instanceof DownloaderError ? npmErr.code : 'NETWORK';
const cdnCode = cdnErr instanceof DownloaderError ? cdnErr.code : 'NETWORK';
throw new DownloaderError(
'AGGREGATE',
`Both sources failed (npm: ${npmCode}, cdn: ${cdnCode}).`,
{ npmCode, cdnCode },
[npmErr, cdnErr],
);
}
}
// ------------- Internal exports for tests -------------
// These are NOT part of the public API — consumers should use downloadClaude
// and detectPlatform. They're exported here so the test suite can unit-test the
// tar parser, octal parsing, and error-code helpers without network I/O.
/** @internal */
export const __test__ = {
parseOctal: _parseOctal,
readTarHeader: _readTarHeader,
processTarChunk: _processTarChunk,
errCode: _errCode,
safeProgress: _safeProgress,
};
/** @internal */
export type __TarExtractState__ = TarExtractState;

129
src/extension.ts
View File

@@ -2,11 +2,12 @@ import * as vscode from 'vscode';
import * as cp from 'child_process'; import * as cp from 'child_process';
import * as util from 'util'; import * as util from 'util';
import * as path from 'path'; import * as path from 'path';
import * as fs from 'fs'; import * as os from 'os';
import getHtml from './ui'; import getHtml from './ui';
import { startRouter, stopRouter, setModelConfig, setBaseUrl } from './router'; import { startRouter, stopRouter, setModelConfig, setBaseUrl } from './router';
import { fetchAndResolveModels } from './model-updater'; import { fetchAndResolveModels } from './model-updater';
import recommendedModels from './recommended-models.json'; import recommendedModels from './recommended-models.json';
import { downloadClaude, detectPlatform, DownloaderError } from './claudeDownloader';
// OpenCredits environment configuration // OpenCredits environment configuration
let OPENCREDITS_API_URL = 'https://ccc.api.opencredits.ai'; let OPENCREDITS_API_URL = 'https://ccc.api.opencredits.ai';
@@ -1052,11 +1053,15 @@ class ClaudeChatProvider {
// Not using WSL // Not using WSL
this._isWslProcess = false; this._isWslProcess = false;
// Use native claude command (or custom executable if configured) // Use native claude command (or custom executable if configured).
// shell:true is only needed on Windows when we don't have an absolute path —
// cmd.exe's resolver finds .cmd/.bat shims on PATH. With an absolute .exe
// path we skip shell wrapping to avoid cmd.exe mis-quoting paths with spaces
// (e.g. the default globalStorage location "...Application Support...").
const executable = customExecutablePath || 'claude'; const executable = customExecutablePath || 'claude';
claudeProcess = cp.spawn(executable, args, { claudeProcess = cp.spawn(executable, args, {
signal: this._abortController.signal, signal: this._abortController.signal,
shell: process.platform === 'win32', shell: process.platform === 'win32' && !customExecutablePath,
detached: process.platform !== 'win32', detached: process.platform !== 'win32',
cwd: cwd, cwd: cwd,
stdio: ['pipe', 'pipe', 'pipe'], stdio: ['pipe', 'pipe', 'pipe'],
@@ -3622,82 +3627,80 @@ class ClaudeChatProvider {
terminal.show(); terminal.show();
} }
private _runInstallCommand(method: string = 'installer'): void { private async _runInstallCommand(method: string = 'installer'): Promise<void> {
let command: string;
if (method === 'npm') {
command = 'npm install -g @anthropic-ai/claude-code';
} else if (process.platform === 'win32') {
command = 'powershell.exe -Command "irm https://claude.ai/install.ps1 | iex"';
} else {
command = 'curl -fsSL https://claude.ai/install.sh | bash';
}
// Track that user has attempted install at least once
this._context.globalState.update('installAttempted', true); this._context.globalState.update('installAttempted', true);
cp.exec(command, { timeout: 600000 }, async (error) => { const config = vscode.workspace.getConfiguration('claudeCodeChat');
if (error) { const wslEnabled = config.get<boolean>('wsl.enabled', false);
this._postMessage({
type: 'installComplete',
success: false,
error: 'Installation failed. Please run in terminal: ' + command,
method: method
});
return;
}
const available = await this._checkClaudeAvailable(); // WSL install needs to run inside the distro, not on the Windows host.
if (available) { // The old shell-based flow didn't handle this either — not regressing,
this._postMessage({ type: 'installComplete', success: true, method }); // not fixing here. User should install claude inside their distro manually
return; // and set claudeCodeChat.wsl.claudePath.
} if (wslEnabled) {
this._postMessage({
type: 'installComplete',
success: false,
method,
error: 'WSL mode: please install Claude inside your WSL distro, then set claudeCodeChat.wsl.claudePath.',
errorCode: 'UNSUPPORTED_PLATFORM'
});
return;
}
const installLocation = this._getKnownInstallLocation(); if (!detectPlatform()) {
if (!fs.existsSync(installLocation)) { this._postMessage({
this._postMessage({ type: 'installComplete',
type: 'installComplete', success: false,
success: true, method,
method, error: `Unsupported platform: ${process.platform}/${os.arch()}. Install Claude manually from https://code.claude.com.`,
notOnPath: true, errorCode: 'UNSUPPORTED_PLATFORM'
installLocation });
}); return;
return; }
}
const config = vscode.workspace.getConfiguration('claudeCodeChat'); const destDir = path.join(this._context.globalStorageUri.fsPath, 'bin');
const existing = config.get<string>('executable.path', '');
try {
const result = await downloadClaude({
destDir,
onProgress: (p) => this._postMessage({ type: 'installProgress', ...p })
});
const existing = (config.get<string>('executable.path', '') || '').trim();
if (!existing) { if (!existing) {
try { try {
await config.update('executable.path', installLocation, vscode.ConfigurationTarget.Global); await config.update('executable.path', result.binaryPath, vscode.ConfigurationTarget.Global);
} catch { } catch {
// fall through; UI will guide user // fall through — UI will still reflect success and the spawn will find it on next launch
} }
} }
this._postMessage({ this._postMessage({
type: 'installComplete', type: 'installComplete',
success: true, success: true,
method, method,
configuredPath: installLocation, configuredPath: existing ? undefined : result.binaryPath,
existingPathRespected: !!existing existingPathRespected: !!existing,
source: result.source,
version: result.version
});
} catch (err) {
const d = err instanceof DownloaderError ? err : null;
const details = d?.details;
this._postMessage({
type: 'installComplete',
success: false,
method,
error: d?.message || 'Installation failed. Please try again.',
errorCode: d?.code,
// AGGREGATE errors carry the per-source failure codes; surface them so
// analytics can bucket "both npm+cdn failed with NETWORK" vs
// "npm INTEGRITY, cdn NETWORK" etc.
npmCode: typeof details?.npmCode === 'string' ? details.npmCode : undefined,
cdnCode: typeof details?.cdnCode === 'string' ? details.cdnCode : undefined
}); });
});
}
private _checkClaudeAvailable(): Promise<boolean> {
const config = vscode.workspace.getConfiguration('claudeCodeChat');
if (config.get<boolean>('wsl.enabled', false)) {
return Promise.resolve(true);
} }
const probe = process.platform === 'win32' ? 'where claude' : 'command -v claude';
return new Promise<boolean>((resolve) => {
cp.exec(probe, { env: process.env }, (err) => resolve(!err));
});
}
private _getKnownInstallLocation(): string {
const homeDir = process.env.HOME || process.env.USERPROFILE || '';
const binary = process.platform === 'win32' ? 'claude.exe' : 'claude';
return path.join(homeDir, '.local', 'bin', binary);
} }
private _buildClaudeTerminalOptions(args: string[] = []): { shellPath: string; shellArgs: string[] } { private _buildClaudeTerminalOptions(args: string[] = []): { shellPath: string; shellArgs: string[] } {

82
src/script.ts
View File

@@ -2895,6 +2895,33 @@ const getScript = (isTelemetryEnabled: boolean, opencreditsApiUrl: string = 'htt
}); });
} }
function handleInstallProgress(p) {
const progressEl = document.getElementById('installProgress');
if (!progressEl || progressEl.style.display === 'none') return;
const textEl = progressEl.querySelector('.install-progress-text');
if (!textEl) return;
const loaded = typeof p.loaded === 'number' && isFinite(p.loaded) ? p.loaded : 0;
const total = typeof p.total === 'number' && isFinite(p.total) && p.total > 0 ? p.total : null;
if (p.phase === 'resolving') {
textEl.textContent = 'Looking up Claude Code...';
} else if (p.phase === 'downloading') {
if (total) {
const pct = Math.min(100, Math.max(0, Math.floor((loaded / total) * 100)));
textEl.textContent = 'Downloading Claude Code (' + pct + '%)';
} else {
textEl.textContent = 'Downloading Claude Code (' + (loaded / 1048576).toFixed(1) + ' MB)';
}
} else if (p.phase === 'verifying') {
textEl.textContent = 'Verifying download...';
} else if (p.phase === 'installing') {
textEl.textContent = 'Installing...';
} else if (p.phase === 'fallback') {
textEl.textContent = 'Retrying via alternate source...';
}
}
function handleInstallComplete(success, error, extra) { function handleInstallComplete(success, error, extra) {
document.getElementById('installProgress').style.display = 'none'; document.getElementById('installProgress').style.display = 'none';
@@ -2906,30 +2933,40 @@ const getScript = (isTelemetryEnabled: boolean, opencreditsApiUrl: string = 'htt
if (ocOption) ocOption.style.display = opencreditsEnabled ? '' : 'none'; if (ocOption) ocOption.style.display = opencreditsEnabled ? '' : 'none';
if (success) { if (success) {
const baseProps = { source: extra && extra.source, version: extra && extra.version };
if (extra && extra.configuredPath) { if (extra && extra.configuredPath) {
sendStats('Install auto configured path', { existingPathRespected: !!extra.existingPathRespected }); sendStats('Install auto configured path', Object.assign({ existingPathRespected: !!extra.existingPathRespected }, baseProps));
successEl.querySelector('.install-success-text').textContent = 'Installed'; successEl.querySelector('.install-success-text').textContent = 'Installed';
const hint = extra.existingPathRespected successEl.querySelector('.install-success-hint').textContent = 'Configured automatically. Send a message to get started.';
? 'Claude was installed but not on your PATH. Your existing executable.path setting was left unchanged.' } else if (extra && extra.existingPathRespected) {
: 'Configured automatically. Send a message to get started.'; sendStats('Install success', baseProps);
successEl.querySelector('.install-success-hint').textContent = hint;
} else if (extra && extra.notOnPath) {
sendStats('Install location not found');
successEl.querySelector('.install-success-text').textContent = 'Installed'; successEl.querySelector('.install-success-text').textContent = 'Installed';
successEl.querySelector('.install-success-hint').textContent = successEl.querySelector('.install-success-hint').textContent =
'Claude was installed but could not be located. Set claudeCodeChat.executable.path manually to your claude binary.'; 'Your existing executable.path setting was left unchanged. Send a message to get started.';
} else { } else {
sendStats('Install success'); sendStats('Install success', baseProps);
successEl.querySelector('.install-success-text').textContent = 'Installed'; successEl.querySelector('.install-success-text').textContent = 'Installed';
successEl.querySelector('.install-success-hint').textContent = 'Send a message to get started'; successEl.querySelector('.install-success-hint').textContent = 'Send a message to get started';
} }
} else { } else {
sendStats('Install failed', { error: (error || 'Unknown error').substring(0, 200) }); const errorCode = extra && extra.errorCode;
// Show error state sendStats('Install failed', {
errorCode: errorCode,
npmCode: extra && extra.npmCode,
cdnCode: extra && extra.cdnCode,
error: (error || 'Unknown error').substring(0, 200)
});
successEl.querySelector('.install-success-icon').style.display = 'none'; successEl.querySelector('.install-success-icon').style.display = 'none';
successEl.querySelector('.install-success-text').textContent = 'Installation failed';
successEl.querySelector('.install-success-hint').textContent = error || 'Try installing manually from claude.ai/download';
successEl.querySelector('.install-options').style.display = 'none'; successEl.querySelector('.install-options').style.display = 'none';
if (errorCode === 'UNSUPPORTED_PLATFORM') {
successEl.querySelector('.install-success-text').textContent = 'Unsupported platform';
successEl.querySelector('.install-success-hint').textContent =
error || 'Your platform is not supported. Install Claude manually from https://code.claude.com.';
} else {
successEl.querySelector('.install-success-text').textContent = 'Installation failed';
successEl.querySelector('.install-success-hint').textContent =
error || 'Try installing manually from claude.ai/download';
}
} }
} }
@@ -3748,15 +3785,28 @@ const getScript = (isTelemetryEnabled: boolean, opencreditsApiUrl: string = 'htt
case 'installComplete': case 'installComplete':
handleInstallComplete(message.success, message.error, { handleInstallComplete(message.success, message.error, {
configuredPath: message.configuredPath, configuredPath: message.configuredPath,
notOnPath: message.notOnPath, existingPathRespected: message.existingPathRespected,
installLocation: message.installLocation, source: message.source,
existingPathRespected: message.existingPathRespected version: message.version,
errorCode: message.errorCode,
npmCode: message.npmCode,
cdnCode: message.cdnCode
}); });
if (message.success) { if (message.success) {
updateStatus('Ready', 'success'); updateStatus('Ready', 'success');
} }
break; break;
case 'installProgress':
handleInstallProgress({
phase: message.phase,
source: message.source,
loaded: message.loaded,
total: message.total,
message: message.message
});
break;
case 'showRestoreOption': case 'showRestoreOption':
showRestoreContainer(message.data); showRestoreContainer(message.data);
break; break;

203
src/test/downloader.integration.test.ts Normal file
View File

@@ -0,0 +1,203 @@
// End-to-end integration tests for the claude downloader.
//
// These hit the REAL npm registry and REAL Anthropic CDN and download the REAL
// native binary to a temp directory. They are slow (~60MB–213MB of transfer)
// and network-dependent. If the suite is ever run in a CI environment without
// egress, these will fail with NETWORK — mark them .skip() if you need to.
//
// We never EXECUTE the downloaded binary. We just verify:
// - the downloader returns a sensible result
// - the file exists at the expected path with mode 755 (on Unix)
// - the file starts with a platform-appropriate executable magic number
// - the integrity hash matched (implicit — the downloader would throw if not)
import * as assert from 'assert';
import * as fs from 'fs';
import * as os from 'os';
import * as path from 'path';
import { detectPlatform, downloadClaude, DownloaderError } from '../claudeDownloader';
const INTEGRATION_TIMEOUT_MS = 5 * 60 * 1000; // 5 minutes — 213MB on slow networks
function mkTempDir(prefix: string): string {
return fs.mkdtempSync(path.join(os.tmpdir(), prefix + '-'));
}
function rmRf(dir: string): void {
try {
fs.rmSync(dir, { recursive: true, force: true });
} catch { /* best effort */ }
}
// Check the first few bytes of the binary match the expected executable format.
// We never parse further than the magic — just enough to confirm we wrote out an
// actual executable and not e.g. an HTML error page or a README.
function assertExecutableMagic(binaryPath: string): void {
const fd = fs.openSync(binaryPath, 'r');
const buf = Buffer.alloc(4);
fs.readSync(fd, buf, 0, 4, 0);
fs.closeSync(fd);
if (process.platform === 'darwin') {
// Mach-O magic numbers: MH_MAGIC_64 (0xFEEDFACF) or MH_CIGAM_64 (0xCFFAEDFE)
// or fat universal binary (0xCAFEBABE / 0xBEBAFECA).
const m = buf.readUInt32BE(0);
const lm = buf.readUInt32LE(0);
assert.ok(
m === 0xFEEDFACF || m === 0xCAFEBABE || lm === 0xFEEDFACF || lm === 0xCAFEBABE,
`Not a Mach-O binary — got magic 0x${m.toString(16)} (LE 0x${lm.toString(16)})`,
);
} else if (process.platform === 'linux') {
// ELF: 0x7F 'E' 'L' 'F'
assert.strictEqual(buf[0], 0x7F);
assert.strictEqual(buf[1], 0x45);
assert.strictEqual(buf[2], 0x4C);
assert.strictEqual(buf[3], 0x46);
} else if (process.platform === 'win32') {
// PE: starts with MZ (DOS stub).
assert.strictEqual(buf[0], 0x4D);
assert.strictEqual(buf[1], 0x5A);
}
}
suite('claudeDownloader: integration (real network)', function () {
// Skip entirely on unsupported platforms — integration only makes sense where
// a binary is published for us.
const platform = detectPlatform();
if (!platform) {
test.skip('no supported binary for this platform', () => { /* skipped */ });
return;
}
this.timeout(INTEGRATION_TIMEOUT_MS);
let tempDirs: string[] = [];
teardown(() => {
for (const d of tempDirs) {rmRf(d);}
tempDirs = [];
});
test('downloads the real binary from npm and verifies integrity', async () => {
const dest = mkTempDir('claude-dl-npm');
tempDirs.push(dest);
const progressPhases: string[] = [];
const result = await downloadClaude({
destDir: dest,
onProgress: (p) => {
if (!progressPhases.includes(p.phase)) {progressPhases.push(p.phase);}
},
});
// Happy path should go npm, no fallback.
assert.strictEqual(result.source, 'npm');
assert.ok(/^\d+\.\d+\.\d+/.test(result.version), 'version looks unfamiliar: ' + result.version);
assert.ok(result.bytesDownloaded > 1_000_000, 'tarball was suspiciously small: ' + result.bytesDownloaded);
// File is at the expected path with correct permissions.
const expectedPath = path.join(dest, platform.binaryName);
assert.strictEqual(result.binaryPath, expectedPath);
assert.ok(fs.existsSync(result.binaryPath));
const stat = fs.statSync(result.binaryPath);
if (process.platform !== 'win32') {
assert.strictEqual(stat.mode & 0o777, 0o755, 'expected chmod 755');
}
assert.ok(stat.size > 50_000_000, 'extracted binary is suspiciously small: ' + stat.size);
assertExecutableMagic(result.binaryPath);
// Progress pipeline actually fired phase transitions.
assert.ok(progressPhases.includes('resolving'), 'missing resolving phase');
assert.ok(progressPhases.includes('downloading'), 'missing downloading phase');
assert.ok(progressPhases.includes('verifying'), 'missing verifying phase');
assert.ok(progressPhases.includes('installing'), 'missing installing phase');
assert.ok(!progressPhases.includes('fallback'), 'fallback phase fired unexpectedly');
});
test('falls back to CDN when npm is unreachable', async () => {
const dest = mkTempDir('claude-dl-fallback');
tempDirs.push(dest);
const progressPhases: string[] = [];
const result = await downloadClaude({
destDir: dest,
// Point npm at a loopback port that actively refuses connections so
// the npm path fails fast (ECONNREFUSED). CDN override is left at
// default so it hits the real Anthropic CDN.
npmRegistry: 'http://127.0.0.1:1',
onProgress: (p) => {
if (!progressPhases.includes(p.phase)) {progressPhases.push(p.phase);}
},
});
assert.strictEqual(result.source, 'cdn');
assert.ok(/^\d+\.\d+\.\d+/.test(result.version));
assert.ok(result.bytesDownloaded > 50_000_000, 'CDN serves uncompressed ≥50MB: ' + result.bytesDownloaded);
assert.ok(fs.existsSync(result.binaryPath));
assertExecutableMagic(result.binaryPath);
assert.ok(progressPhases.includes('fallback'), 'expected fallback phase after npm failure');
});
test('AGGREGATE error when both sources are unreachable', async () => {
const dest = mkTempDir('claude-dl-aggregate');
tempDirs.push(dest);
let caught: unknown;
try {
await downloadClaude({
destDir: dest,
npmRegistry: 'http://127.0.0.1:1',
cdnBase: 'http://127.0.0.1:1',
});
assert.fail('expected both-sources-fail to throw');
} catch (err) {
caught = err;
}
assert.ok(caught instanceof DownloaderError, 'expected DownloaderError');
const e = caught as DownloaderError;
assert.strictEqual(e.code, 'AGGREGATE');
assert.ok(e.details, 'AGGREGATE should carry details');
assert.ok(typeof e.details!.npmCode === 'string', 'npmCode should be populated');
assert.ok(typeof e.details!.cdnCode === 'string', 'cdnCode should be populated');
// Should not leak any path from the local temp dir.
assert.ok(!e.message.includes(os.homedir()), 'error message leaks home dir');
assert.ok(!e.message.includes(dest), 'error message leaks temp dir');
// Temp file should be cleaned up — nothing left in dest except the dir itself.
const entries = fs.readdirSync(dest);
assert.deepStrictEqual(entries, [], 'temp download files were not cleaned up');
});
test('INTEGRITY error when CDN manifest is tampered (simulated via bogus CDN base)', async () => {
const dest = mkTempDir('claude-dl-bad-cdn');
tempDirs.push(dest);
// npm still works so we actually need to disable it to force CDN.
// Point CDN at a non-existent but reachable-looking host — expect
// NETWORK (DNS failure) bubbled through AGGREGATE, not INTEGRITY.
// This is really just confirming error classification is coherent when
// the CDN hostname resolves but returns nonsense — skip the exact
// INTEGRITY path since we'd need to stand up a mock server. This test
// doubles as a sanity check on the AGGREGATE error formatting.
let caught: unknown;
try {
await downloadClaude({
destDir: dest,
npmRegistry: 'http://127.0.0.1:1',
cdnBase: 'http://127.0.0.1:1',
});
assert.fail('expected failure');
} catch (err) {
caught = err;
}
const e = caught as DownloaderError;
assert.strictEqual(e.code, 'AGGREGATE');
assert.ok(
e.message.includes('npm:') && e.message.includes('cdn:'),
'AGGREGATE message should name both sources',
);
});
});

312
src/test/downloader.test.ts Normal file
View File

@@ -0,0 +1,312 @@
import * as assert from 'assert';
import * as fs from 'fs';
import * as os from 'os';
import * as path from 'path';
import { detectPlatform, DownloaderError, __test__ } from '../claudeDownloader';
const { parseOctal, readTarHeader, processTarChunk, errCode, safeProgress } = __test__;
// ---- Tar fixture builder -----------------------------------------------
// Build a ustar header block + aligned data. We only populate the fields our
// parser reads: name (0..100), size (124..136), typeflag (156), prefix (345..500).
function makeHeader(name: string, size: number, opts: { typeFlag?: string; prefix?: string } = {}): Buffer {
const block = Buffer.alloc(512, 0);
block.write(name, 0, 100, 'utf8');
// Size: octal ASCII, null-terminated, 11 digits + NUL.
const oct = size.toString(8).padStart(11, '0');
block.write(oct, 124, 11, 'ascii');
block[135] = 0;
block[156] = (opts.typeFlag || '0').charCodeAt(0);
if (opts.prefix) {block.write(opts.prefix, 345, 155, 'utf8');}
return block;
}
function makeMalformedSizeHeader(name: string): Buffer {
// Non-octal junk in the size field.
const block = Buffer.alloc(512, 0);
block.write(name, 0, 100, 'utf8');
block.write('ZZZ', 124, 3, 'ascii');
block[156] = '0'.charCodeAt(0);
return block;
}
function paddedData(size: number, fill = 0x41 /* 'A' */): Buffer {
const padded = Math.ceil(size / 512) * 512;
const buf = Buffer.alloc(padded, 0);
for (let i = 0; i < size; i++) {buf[i] = fill;}
return buf;
}
function buildTarball(entries: Array<{ name: string; data: Buffer; typeFlag?: string; prefix?: string }>): Buffer {
const parts: Buffer[] = [];
for (const e of entries) {
parts.push(makeHeader(e.name, e.data.length, { typeFlag: e.typeFlag, prefix: e.prefix }));
const padded = Math.ceil(e.data.length / 512) * 512;
const padBlock = Buffer.alloc(padded, 0);
e.data.copy(padBlock, 0);
parts.push(padBlock);
}
// End-of-archive: two zero-blocks.
parts.push(Buffer.alloc(1024, 0));
return Buffer.concat(parts);
}
function newWriteStream(): { stream: fs.WriteStream; path: string; read(): Buffer } {
const tmp = path.join(os.tmpdir(), 'downloader-test-' + process.pid + '-' + Date.now() + '-' + Math.random().toString(36).slice(2));
const stream = fs.createWriteStream(tmp);
return {
stream,
path: tmp,
read: () => fs.readFileSync(tmp),
};
}
async function flushWriteStream(s: fs.WriteStream): Promise<void> {
return new Promise((resolve, reject) => {
s.end(() => resolve());
s.on('error', reject);
});
}
suite('claudeDownloader: detectPlatform', () => {
test('returns a supported platform shape on the current host', () => {
const p = detectPlatform();
if (!p) {
// Test suite only runs on supported hosts — skip if we land somewhere weird.
return;
}
assert.strictEqual(typeof p.key, 'string');
assert.ok(p.key.length > 0);
assert.ok(
/^(darwin|linux|win32)-(x64|arm64)(-musl)?$/.test(p.key),
'unexpected platform key: ' + p.key,
);
assert.ok(p.binaryName === 'claude' || p.binaryName === 'claude.exe');
assert.ok(p.tarEntry === 'package/claude' || p.tarEntry === 'package/claude.exe');
// Windows → .exe, others → no extension
if (process.platform === 'win32') {
assert.strictEqual(p.binaryName, 'claude.exe');
assert.strictEqual(p.tarEntry, 'package/claude.exe');
} else {
assert.strictEqual(p.binaryName, 'claude');
assert.strictEqual(p.tarEntry, 'package/claude');
}
});
});
suite('claudeDownloader: DownloaderError', () => {
test('exposes code, message, details, cause', () => {
const cause = new Error('underlying');
const e = new DownloaderError('NETWORK', 'something failed', { status: 503, host: 'example.com' }, cause);
assert.strictEqual(e.code, 'NETWORK');
assert.strictEqual(e.message, 'something failed');
assert.deepStrictEqual(e.details, { status: 503, host: 'example.com' });
assert.strictEqual(e.cause, cause);
assert.strictEqual(e.name, 'DownloaderError');
assert.ok(e instanceof Error);
});
test('details and cause are optional', () => {
const e = new DownloaderError('CANCELLED', 'stop');
assert.strictEqual(e.details, undefined);
assert.strictEqual(e.cause, undefined);
});
});
suite('claudeDownloader: parseOctal', () => {
test('parses standard octal size', () => {
const buf = Buffer.alloc(12, 0);
buf.write('00000001024', 0, 'ascii'); // 1024 in octal
assert.strictEqual(parseOctal(buf), 0o1024);
});
test('parses octal with trailing NUL terminator', () => {
const buf = Buffer.alloc(12, 0);
buf.write('0000100', 0, 'ascii');
assert.strictEqual(parseOctal(buf), 0o100);
});
test('parses octal with trailing space terminator', () => {
const buf = Buffer.from('0000100 \0\0\0\0\0');
assert.strictEqual(parseOctal(buf), 0o100);
});
test('returns 0 for empty buffer', () => {
assert.strictEqual(parseOctal(Buffer.alloc(12, 0)), 0);
});
test('returns NaN for non-octal garbage', () => {
const buf = Buffer.from('ZZZ\0\0\0\0\0\0\0\0\0');
const result = parseOctal(buf);
assert.ok(Number.isNaN(result), 'expected NaN for non-octal input, got ' + result);
});
});
suite('claudeDownloader: readTarHeader', () => {
test('reads a well-formed header', () => {
const hdr = makeHeader('package/claude', 1024);
const parsed = readTarHeader(hdr);
assert.strictEqual(parsed.name, 'package/claude');
assert.strictEqual(parsed.size, 1024);
assert.strictEqual(parsed.isRegularFile, true);
});
test('combines prefix + name for long paths', () => {
const hdr = makeHeader('claude', 512, { prefix: 'package' });
const parsed = readTarHeader(hdr);
assert.strictEqual(parsed.name, 'package/claude');
});
test('flags non-regular entries (directory)', () => {
const hdr = makeHeader('package/', 0, { typeFlag: '5' });
const parsed = readTarHeader(hdr);
assert.strictEqual(parsed.isRegularFile, false);
});
test('returns size=-1 when size field is garbage (NaN guard)', () => {
const hdr = makeMalformedSizeHeader('package/claude');
const parsed = readTarHeader(hdr);
assert.strictEqual(parsed.size, -1, 'malformed size must be clamped to -1');
});
});
suite('claudeDownloader: processTarChunk', () => {
test('extracts a single matching entry', async () => {
const data = paddedData(2000, 0x42 /* 'B' */);
const binary = data.subarray(0, 2000);
const tar = buildTarball([{ name: 'package/claude', data: binary }]);
const ws = newWriteStream();
const state = { found: false, bytesWritten: 0, buffer: Buffer.alloc(0), remainingFileBytes: 0, remainingSkipBytes: 0 };
processTarChunk(state, tar, 'package/claude', ws.stream);
await flushWriteStream(ws.stream);
const out = ws.read();
assert.strictEqual(state.found, true);
assert.strictEqual(out.length, 2000);
assert.deepStrictEqual(out, binary);
fs.unlinkSync(ws.path);
});
test('skips non-matching entries and still extracts target', async () => {
const decoy = Buffer.from('ignore me');
const binary = paddedData(1500, 0x43 /* 'C' */).subarray(0, 1500);
const tar = buildTarball([
{ name: 'package/README.md', data: decoy },
{ name: 'package/claude', data: binary },
{ name: 'package/LICENSE', data: Buffer.from('also ignore') },
]);
const ws = newWriteStream();
const state = { found: false, bytesWritten: 0, buffer: Buffer.alloc(0), remainingFileBytes: 0, remainingSkipBytes: 0 };
processTarChunk(state, tar, 'package/claude', ws.stream);
await flushWriteStream(ws.stream);
assert.strictEqual(state.found, true);
assert.deepStrictEqual(ws.read(), binary);
fs.unlinkSync(ws.path);
});
test('handles headers split across multiple chunks', async () => {
const binary = paddedData(3000, 0x44 /* 'D' */).subarray(0, 3000);
const tar = buildTarball([
{ name: 'package/README.md', data: Buffer.from('meh') },
{ name: 'package/claude', data: binary },
]);
const ws = newWriteStream();
const state = { found: false, bytesWritten: 0, buffer: Buffer.alloc(0), remainingFileBytes: 0, remainingSkipBytes: 0 };
// Drip-feed 137-byte chunks — guaranteed to bisect every header + data block.
const chunkSize = 137;
for (let i = 0; i < tar.length; i += chunkSize) {
processTarChunk(state, tar.subarray(i, Math.min(i + chunkSize, tar.length)), 'package/claude', ws.stream);
}
await flushWriteStream(ws.stream);
assert.strictEqual(state.found, true);
assert.deepStrictEqual(ws.read(), binary);
fs.unlinkSync(ws.path);
});
test('sets found=false when target entry is absent', async () => {
const tar = buildTarball([
{ name: 'package/README.md', data: Buffer.from('nope') },
]);
const ws = newWriteStream();
const state = { found: false, bytesWritten: 0, buffer: Buffer.alloc(0), remainingFileBytes: 0, remainingSkipBytes: 0 };
processTarChunk(state, tar, 'package/claude', ws.stream);
await flushWriteStream(ws.stream);
assert.strictEqual(state.found, false);
assert.strictEqual(ws.read().length, 0);
fs.unlinkSync(ws.path);
});
test('throws INTEGRITY on malformed size in header', () => {
const bad = makeMalformedSizeHeader('package/evil');
const endBlocks = Buffer.alloc(1024, 0);
const tar = Buffer.concat([bad, endBlocks]);
const ws = newWriteStream();
const state = { found: false, bytesWritten: 0, buffer: Buffer.alloc(0), remainingFileBytes: 0, remainingSkipBytes: 0 };
assert.throws(
() => processTarChunk(state, tar, 'package/claude', ws.stream),
(err) => err instanceof DownloaderError && err.code === 'INTEGRITY',
);
ws.stream.destroy();
try { fs.unlinkSync(ws.path); } catch { /* best effort */ }
});
test('stops cleanly at end-of-archive zero block', async () => {
const binary = paddedData(800, 0x45 /* 'E' */).subarray(0, 800);
const tar = buildTarball([{ name: 'package/claude', data: binary }]);
const ws = newWriteStream();
const state = { found: false, bytesWritten: 0, buffer: Buffer.alloc(0), remainingFileBytes: 0, remainingSkipBytes: 0 };
processTarChunk(state, tar, 'package/claude', ws.stream);
await flushWriteStream(ws.stream);
assert.strictEqual(state.found, true);
assert.deepStrictEqual(ws.read(), binary);
fs.unlinkSync(ws.path);
});
});
suite('claudeDownloader: errCode helper', () => {
test('extracts .code when present', () => {
const err = Object.assign(new Error('x'), { code: 'EACCES' });
assert.strictEqual(errCode(err, 'FALLBACK'), 'EACCES');
});
test('returns fallback when code is absent', () => {
assert.strictEqual(errCode(new Error('x'), 'FALLBACK'), 'FALLBACK');
assert.strictEqual(errCode(null, 'FALLBACK'), 'FALLBACK');
assert.strictEqual(errCode(undefined, 'FALLBACK'), 'FALLBACK');
assert.strictEqual(errCode('just a string', 'FALLBACK'), 'FALLBACK');
});
test('returns fallback when code is a non-string', () => {
assert.strictEqual(errCode({ code: 123 }, 'FALLBACK'), 'FALLBACK');
assert.strictEqual(errCode({ code: '' }, 'FALLBACK'), 'FALLBACK');
});
});
suite('claudeDownloader: safeProgress helper', () => {
test('invokes the callback with the progress payload', () => {
const calls: unknown[] = [];
safeProgress((p) => calls.push(p), { phase: 'resolving' });
assert.deepStrictEqual(calls, [{ phase: 'resolving' }]);
});
test('swallows callback throws without propagating', () => {
assert.doesNotThrow(() => {
safeProgress(() => { throw new Error('boom'); }, { phase: 'downloading' });
});
});
test('handles undefined callback', () => {
assert.doesNotThrow(() => safeProgress(undefined, { phase: 'verifying' }));
});
});