import { randomUUID } from "node:crypto" ;
import fs from "node:fs" ;
import path from "node:path" ;
import { Readable } from "node:stream" ;
import { pipeline } from "node:stream/promises" ;
import type { ReadableStream as NodeReadableStream } from "node:stream/web" ;
import { isWindowsDrivePath } from "../infra/archive-path.js" ;
import { formatErrorMessage } from "../infra/errors.js" ;
import { writeFileFromPathWithinRoot } from "../infra/fs-safe.js" ;
import { assertCanonicalPathWithinBase } from "../infra/install-safe-path.js" ;
import { fetchWithSsrFGuard } from "../infra/net/fetch-guard.js" ;
import { isWithinDir } from "../infra/path-safety.js" ;
import { normalizeOptionalLowercaseString } from "../shared/string-coerce.js" ;
import { ensureDir, resolveUserPath } from "../utils.js" ;
import { formatInstallFailureMessage } from "./skills-install-output.js" ;
import type { SkillInstallResult } from "./skills-install.types.js" ;
import type { SkillEntry, SkillInstallSpec } from "./skills.js" ;
import { resolveSkillToolsRootDir } from "./skills/tools-dir.js" ;
let extractModulePromise: Promise<typeof import ("./skills-install-extract.js" )> | undefined;
async function loadExtractModule() {
extractModulePromise ??= import ("./skills-install-extract.js" );
return await extractModulePromise;
}
function isNodeReadableStream(value: unknown): value is NodeJS.ReadableStream {
return Boolean (value && typeof (value as NodeJS.ReadableStream).pipe === "function" );
}
function resolveDownloadTargetDir(entry: SkillEntry, spec: SkillInstallSpec): string {
const safeRoot = resolveSkillToolsRootDir(entry);
const raw = spec.targetDir?.trim();
if (!raw) {
return safeRoot;
}
// Treat non-absolute paths as relative to the per-skill tools root.
const resolved =
raw.startsWith("~" ) || path.isAbsolute(raw) || isWindowsDrivePath(raw)
? resolveUserPath(raw)
: path.resolve(safeRoot, raw);
if (!isWithinDir(safeRoot, resolved)) {
throw new Error(
`Refusing to install outside the skill tools directory. targetDir="${raw}" resolves to "${resolved}" . Allowed root: "${safeRoot}" .`,
);
}
return resolved;
}
function resolveArchiveType(spec: SkillInstallSpec, filename: string): string | undefined {
const explicit = normalizeOptionalLowercaseString(spec.archive);
if (explicit) {
return explicit;
}
const lower = normalizeOptionalLowercaseString(filename);
if (!lower) {
return undefined;
}
if (lower.endsWith(".tar.gz" ) || lower.endsWith(".tgz" )) {
return "tar.gz" ;
}
if (lower.endsWith(".tar.bz2" ) || lower.endsWith(".tbz2" )) {
return "tar.bz2" ;
}
if (lower.endsWith(".zip" )) {
return "zip" ;
}
return undefined;
}
async function downloadFile(params: {
url: string;
rootDir: string;
relativePath: string;
timeoutMs: number;
}): Promise<{ bytes: number }> {
const destPath = path.resolve(params.rootDir, params.relativePath);
const stagingDir = path.join(params.rootDir, ".openclaw-download-staging" );
await ensureDir(stagingDir);
await assertCanonicalPathWithinBase({
baseDir: params.rootDir,
candidatePath: stagingDir,
boundaryLabel: "skill tools directory" ,
});
const tempPath = path.join(stagingDir, `${randomUUID()}.tmp`);
const { response, release } = await fetchWithSsrFGuard({
url: params.url,
timeoutMs: Math.max(1 _000 , params.timeoutMs),
});
try {
if (!response.ok || !response.body) {
throw new Error(`Download failed (${response.status} ${response.statusText})`);
}
const file = fs.createWriteStream(tempPath);
const body = response.body as unknown;
const readable = isNodeReadableStream(body)
? body
: Readable.fromWeb(body as NodeReadableStream);
await pipeline(readable, file);
await writeFileFromPathWithinRoot({
rootDir: params.rootDir,
relativePath: params.relativePath,
sourcePath: tempPath,
});
const stat = await fs.promises.stat(destPath);
return { bytes: stat.size };
} finally {
await fs.promises.rm(tempPath, { force: true }).catch (() => undefined);
await release();
}
}
export async function installDownloadSpec(params: {
entry: SkillEntry;
spec: SkillInstallSpec;
timeoutMs: number;
}): Promise<SkillInstallResult> {
const { entry, spec, timeoutMs } = params;
const safeRoot = resolveSkillToolsRootDir(entry);
const url = spec.url?.trim();
if (!url) {
return {
ok: false ,
message: "missing download url" ,
stdout: "" ,
stderr: "" ,
code: null ,
};
}
let filename = "" ;
try {
const parsed = new URL(url);
filename = path.basename(parsed.pathname);
} catch {
filename = path.basename(url);
}
if (!filename) {
filename = "download" ;
}
let canonicalSafeRoot = "" ;
let targetDir = "" ;
try {
await ensureDir(safeRoot);
await assertCanonicalPathWithinBase({
baseDir: safeRoot,
candidatePath: safeRoot,
boundaryLabel: "skill tools directory" ,
});
canonicalSafeRoot = await fs.promises.realpath(safeRoot);
const requestedTargetDir = resolveDownloadTargetDir(entry, spec);
await ensureDir(requestedTargetDir);
await assertCanonicalPathWithinBase({
baseDir: safeRoot,
candidatePath: requestedTargetDir,
boundaryLabel: "skill tools directory" ,
});
const targetRelativePath = path.relative(safeRoot, requestedTargetDir);
targetDir = path.join(canonicalSafeRoot, targetRelativePath);
} catch (err) {
const message = formatErrorMessage(err);
return { ok: false , message, stdout: "" , stderr: message, code: null };
}
const archivePath = path.join(targetDir, filename);
const archiveRelativePath = path.relative(canonicalSafeRoot, archivePath);
if (
!archiveRelativePath ||
archiveRelativePath === ".." ||
archiveRelativePath.startsWith(`..${path.sep}`) ||
path.isAbsolute(archiveRelativePath)
) {
return {
ok: false ,
message: "invalid download archive path" ,
stdout: "" ,
stderr: "invalid download archive path" ,
code: null ,
};
}
let downloaded = 0 ;
try {
const result = await downloadFile({
url,
rootDir: canonicalSafeRoot,
relativePath: archiveRelativePath,
timeoutMs,
});
downloaded = result.bytes;
} catch (err) {
const message = formatErrorMessage(err);
return { ok: false , message, stdout: "" , stderr: message, code: null };
}
const archiveType = resolveArchiveType(spec, filename);
const shouldExtract = spec.extract ?? Boolean (archiveType);
if (!shouldExtract) {
return {
ok: true ,
message: `Downloaded to ${archivePath}`,
stdout: `downloaded=${downloaded}`,
stderr: "" ,
code: 0 ,
};
}
if (!archiveType) {
return {
ok: false ,
message: "extract requested but archive type could not be detected" ,
stdout: "" ,
stderr: "" ,
code: null ,
};
}
try {
await assertCanonicalPathWithinBase({
baseDir: canonicalSafeRoot,
candidatePath: targetDir,
boundaryLabel: "skill tools directory" ,
});
} catch (err) {
const message = formatErrorMessage(err);
return { ok: false , message, stdout: "" , stderr: message, code: null };
}
const { extractArchive } = await loadExtractModule();
const extractResult = await extractArchive({
archivePath,
archiveType,
targetDir,
stripComponents: spec.stripComponents,
timeoutMs,
});
const success = extractResult.code === 0 ;
return {
ok: success,
message: success
? `Downloaded and extracted to ${targetDir}`
: formatInstallFailureMessage(extractResult),
stdout: extractResult.stdout.trim(),
stderr: extractResult.stderr.trim(),
code: extractResult.code,
};
}
Messung V0.5 in Prozent C=100 H=100 G=100
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-05-26)
¤
*© Formatika GbR, Deutschland