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qwen/nodejs/node_modules/helmet/index.cjs

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+"use strict"
+
+Object.defineProperties(exports, {__esModule: {value: true}, [Symbol.toStringTag]: {value: "Module"}})
+
+const dangerouslyDisableDefaultSrc = Symbol("dangerouslyDisableDefaultSrc")
+const DEFAULT_DIRECTIVES = {
+	"default-src": ["'self'"],
+	"base-uri": ["'self'"],
+	"font-src": ["'self'", "https:", "data:"],
+	"form-action": ["'self'"],
+	"frame-ancestors": ["'self'"],
+	"img-src": ["'self'", "data:"],
+	"object-src": ["'none'"],
+	"script-src": ["'self'"],
+	"script-src-attr": ["'none'"],
+	"style-src": ["'self'", "https:", "'unsafe-inline'"],
+	"upgrade-insecure-requests": []
+}
+const SHOULD_BE_QUOTED = new Set(["none", "self", "strict-dynamic", "report-sample", "inline-speculation-rules", "unsafe-inline", "unsafe-eval", "unsafe-hashes", "wasm-unsafe-eval"])
+const getDefaultDirectives = () => Object.assign({}, DEFAULT_DIRECTIVES)
+const dashify = str => str.replace(/[A-Z]/g, capitalLetter => "-" + capitalLetter.toLowerCase())
+const isDirectiveValueInvalid = directiveValue => /;|,/.test(directiveValue)
+const shouldDirectiveValueEntryBeQuoted = directiveValueEntry => SHOULD_BE_QUOTED.has(directiveValueEntry) || directiveValueEntry.startsWith("nonce-") || directiveValueEntry.startsWith("sha256-") || directiveValueEntry.startsWith("sha384-") || directiveValueEntry.startsWith("sha512-")
+const warnIfDirectiveValueEntryShouldBeQuoted = value => {
+	if (shouldDirectiveValueEntryBeQuoted(value)) {
+		console.warn(`Content-Security-Policy got directive value \`${value}\` which should be single-quoted and changed to \`'${value}'\`. This will be an error in future versions of Helmet.`)
+	}
+}
+const has = (obj, key) => Object.prototype.hasOwnProperty.call(obj, key)
+function normalizeDirectives(options) {
+	const defaultDirectives = getDefaultDirectives()
+	const {useDefaults = true, directives: rawDirectives = defaultDirectives} = options
+	const result = new Map()
+	const directiveNamesSeen = new Set()
+	const directivesExplicitlyDisabled = new Set()
+	for (const rawDirectiveName in rawDirectives) {
+		if (!has(rawDirectives, rawDirectiveName)) {
+			continue
+		}
+		if (rawDirectiveName.length === 0 || /[^a-zA-Z0-9-]/.test(rawDirectiveName)) {
+			throw new Error(`Content-Security-Policy received an invalid directive name ${JSON.stringify(rawDirectiveName)}`)
+		}
+		const directiveName = dashify(rawDirectiveName)
+		if (directiveNamesSeen.has(directiveName)) {
+			throw new Error(`Content-Security-Policy received a duplicate directive ${JSON.stringify(directiveName)}`)
+		}
+		directiveNamesSeen.add(directiveName)
+		const rawDirectiveValue = rawDirectives[rawDirectiveName]
+		let directiveValue
+		if (rawDirectiveValue === null) {
+			if (directiveName === "default-src") {
+				throw new Error("Content-Security-Policy needs a default-src but it was set to `null`. If you really want to disable it, set it to `contentSecurityPolicy.dangerouslyDisableDefaultSrc`.")
+			}
+			directivesExplicitlyDisabled.add(directiveName)
+			continue
+		} else if (typeof rawDirectiveValue === "string") {
+			directiveValue = [rawDirectiveValue]
+		} else if (!rawDirectiveValue) {
+			throw new Error(`Content-Security-Policy received an invalid directive value for ${JSON.stringify(directiveName)}`)
+		} else if (rawDirectiveValue === dangerouslyDisableDefaultSrc) {
+			if (directiveName === "default-src") {
+				directivesExplicitlyDisabled.add("default-src")
+				continue
+			} else {
+				throw new Error(`Content-Security-Policy: tried to disable ${JSON.stringify(directiveName)} as if it were default-src; simply omit the key`)
+			}
+		} else {
+			directiveValue = rawDirectiveValue
+		}
+		for (const element of directiveValue) {
+			if (typeof element === "string") {
+				if (isDirectiveValueInvalid(element)) {
+					throw new Error(`Content-Security-Policy received an invalid directive value for ${JSON.stringify(directiveName)}`)
+				}
+				warnIfDirectiveValueEntryShouldBeQuoted(element)
+			}
+		}
+		result.set(directiveName, directiveValue)
+	}
+	if (useDefaults) {
+		Object.entries(defaultDirectives).forEach(([defaultDirectiveName, defaultDirectiveValue]) => {
+			if (!result.has(defaultDirectiveName) && !directivesExplicitlyDisabled.has(defaultDirectiveName)) {
+				result.set(defaultDirectiveName, defaultDirectiveValue)
+			}
+		})
+	}
+	if (!result.size) {
+		throw new Error("Content-Security-Policy has no directives. Either set some or disable the header")
+	}
+	if (!result.has("default-src") && !directivesExplicitlyDisabled.has("default-src")) {
+		throw new Error("Content-Security-Policy needs a default-src but none was provided. If you really want to disable it, set it to `contentSecurityPolicy.dangerouslyDisableDefaultSrc`.")
+	}
+	return result
+}
+function getHeaderValue(req, res, normalizedDirectives) {
+	let err
+	const result = []
+	normalizedDirectives.forEach((rawDirectiveValue, directiveName) => {
+		let directiveValue = ""
+		for (const element of rawDirectiveValue) {
+			if (typeof element === "function") {
+				const newElement = element(req, res)
+				warnIfDirectiveValueEntryShouldBeQuoted(newElement)
+				directiveValue += " " + newElement
+			} else {
+				directiveValue += " " + element
+			}
+		}
+		if (!directiveValue) {
+			result.push(directiveName)
+		} else if (isDirectiveValueInvalid(directiveValue)) {
+			err = new Error(`Content-Security-Policy received an invalid directive value for ${JSON.stringify(directiveName)}`)
+		} else {
+			result.push(`${directiveName}${directiveValue}`)
+		}
+	})
+	return err ? err : result.join(";")
+}
+const contentSecurityPolicy = function contentSecurityPolicy(options = {}) {
+	const headerName = options.reportOnly ? "Content-Security-Policy-Report-Only" : "Content-Security-Policy"
+	const normalizedDirectives = normalizeDirectives(options)
+	return function contentSecurityPolicyMiddleware(req, res, next) {
+		const result = getHeaderValue(req, res, normalizedDirectives)
+		if (result instanceof Error) {
+			next(result)
+		} else {
+			res.setHeader(headerName, result)
+			next()
+		}
+	}
+}
+contentSecurityPolicy.getDefaultDirectives = getDefaultDirectives
+contentSecurityPolicy.dangerouslyDisableDefaultSrc = dangerouslyDisableDefaultSrc
+
+const ALLOWED_POLICIES$2 = new Set(["require-corp", "credentialless", "unsafe-none"])
+function getHeaderValueFromOptions$6({policy = "require-corp"}) {
+	if (ALLOWED_POLICIES$2.has(policy)) {
+		return policy
+	} else {
+		throw new Error(`Cross-Origin-Embedder-Policy does not support the ${JSON.stringify(policy)} policy`)
+	}
+}
+function crossOriginEmbedderPolicy(options = {}) {
+	const headerValue = getHeaderValueFromOptions$6(options)
+	return function crossOriginEmbedderPolicyMiddleware(_req, res, next) {
+		res.setHeader("Cross-Origin-Embedder-Policy", headerValue)
+		next()
+	}
+}
+
+const ALLOWED_POLICIES$1 = new Set(["same-origin", "same-origin-allow-popups", "unsafe-none"])
+function getHeaderValueFromOptions$5({policy = "same-origin"}) {
+	if (ALLOWED_POLICIES$1.has(policy)) {
+		return policy
+	} else {
+		throw new Error(`Cross-Origin-Opener-Policy does not support the ${JSON.stringify(policy)} policy`)
+	}
+}
+function crossOriginOpenerPolicy(options = {}) {
+	const headerValue = getHeaderValueFromOptions$5(options)
+	return function crossOriginOpenerPolicyMiddleware(_req, res, next) {
+		res.setHeader("Cross-Origin-Opener-Policy", headerValue)
+		next()
+	}
+}
+
+const ALLOWED_POLICIES = new Set(["same-origin", "same-site", "cross-origin"])
+function getHeaderValueFromOptions$4({policy = "same-origin"}) {
+	if (ALLOWED_POLICIES.has(policy)) {
+		return policy
+	} else {
+		throw new Error(`Cross-Origin-Resource-Policy does not support the ${JSON.stringify(policy)} policy`)
+	}
+}
+function crossOriginResourcePolicy(options = {}) {
+	const headerValue = getHeaderValueFromOptions$4(options)
+	return function crossOriginResourcePolicyMiddleware(_req, res, next) {
+		res.setHeader("Cross-Origin-Resource-Policy", headerValue)
+		next()
+	}
+}
+
+function originAgentCluster() {
+	return function originAgentClusterMiddleware(_req, res, next) {
+		res.setHeader("Origin-Agent-Cluster", "?1")
+		next()
+	}
+}
+
+const ALLOWED_TOKENS = new Set(["no-referrer", "no-referrer-when-downgrade", "same-origin", "origin", "strict-origin", "origin-when-cross-origin", "strict-origin-when-cross-origin", "unsafe-url", ""])
+function getHeaderValueFromOptions$3({policy = ["no-referrer"]}) {
+	const tokens = typeof policy === "string" ? [policy] : policy
+	if (tokens.length === 0) {
+		throw new Error("Referrer-Policy received no policy tokens")
+	}
+	const tokensSeen = new Set()
+	tokens.forEach(token => {
+		if (!ALLOWED_TOKENS.has(token)) {
+			throw new Error(`Referrer-Policy received an unexpected policy token ${JSON.stringify(token)}`)
+		} else if (tokensSeen.has(token)) {
+			throw new Error(`Referrer-Policy received a duplicate policy token ${JSON.stringify(token)}`)
+		}
+		tokensSeen.add(token)
+	})
+	return tokens.join(",")
+}
+function referrerPolicy(options = {}) {
+	const headerValue = getHeaderValueFromOptions$3(options)
+	return function referrerPolicyMiddleware(_req, res, next) {
+		res.setHeader("Referrer-Policy", headerValue)
+		next()
+	}
+}
+
+const DEFAULT_MAX_AGE = 180 * 24 * 60 * 60
+function parseMaxAge(value = DEFAULT_MAX_AGE) {
+	if (value >= 0 && Number.isFinite(value)) {
+		return Math.floor(value)
+	} else {
+		throw new Error(`Strict-Transport-Security: ${JSON.stringify(value)} is not a valid value for maxAge. Please choose a positive integer.`)
+	}
+}
+function getHeaderValueFromOptions$2(options) {
+	if ("maxage" in options) {
+		throw new Error("Strict-Transport-Security received an unsupported property, `maxage`. Did you mean to pass `maxAge`?")
+	}
+	if ("includeSubdomains" in options) {
+		console.warn('Strict-Transport-Security middleware should use `includeSubDomains` instead of `includeSubdomains`. (The correct one has an uppercase "D".)')
+	}
+	const directives = [`max-age=${parseMaxAge(options.maxAge)}`]
+	if (options.includeSubDomains === undefined || options.includeSubDomains) {
+		directives.push("includeSubDomains")
+	}
+	if (options.preload) {
+		directives.push("preload")
+	}
+	return directives.join("; ")
+}
+function strictTransportSecurity(options = {}) {
+	const headerValue = getHeaderValueFromOptions$2(options)
+	return function strictTransportSecurityMiddleware(_req, res, next) {
+		res.setHeader("Strict-Transport-Security", headerValue)
+		next()
+	}
+}
+
+function xContentTypeOptions() {
+	return function xContentTypeOptionsMiddleware(_req, res, next) {
+		res.setHeader("X-Content-Type-Options", "nosniff")
+		next()
+	}
+}
+
+function xDnsPrefetchControl(options = {}) {
+	const headerValue = options.allow ? "on" : "off"
+	return function xDnsPrefetchControlMiddleware(_req, res, next) {
+		res.setHeader("X-DNS-Prefetch-Control", headerValue)
+		next()
+	}
+}
+
+function xDownloadOptions() {
+	return function xDownloadOptionsMiddleware(_req, res, next) {
+		res.setHeader("X-Download-Options", "noopen")
+		next()
+	}
+}
+
+function getHeaderValueFromOptions$1({action = "sameorigin"}) {
+	const normalizedAction = typeof action === "string" ? action.toUpperCase() : action
+	switch (normalizedAction) {
+		case "SAME-ORIGIN":
+			return "SAMEORIGIN"
+		case "DENY":
+		case "SAMEORIGIN":
+			return normalizedAction
+		default:
+			throw new Error(`X-Frame-Options received an invalid action ${JSON.stringify(action)}`)
+	}
+}
+function xFrameOptions(options = {}) {
+	const headerValue = getHeaderValueFromOptions$1(options)
+	return function xFrameOptionsMiddleware(_req, res, next) {
+		res.setHeader("X-Frame-Options", headerValue)
+		next()
+	}
+}
+
+const ALLOWED_PERMITTED_POLICIES = new Set(["none", "master-only", "by-content-type", "all"])
+function getHeaderValueFromOptions({permittedPolicies = "none"}) {
+	if (ALLOWED_PERMITTED_POLICIES.has(permittedPolicies)) {
+		return permittedPolicies
+	} else {
+		throw new Error(`X-Permitted-Cross-Domain-Policies does not support ${JSON.stringify(permittedPolicies)}`)
+	}
+}
+function xPermittedCrossDomainPolicies(options = {}) {
+	const headerValue = getHeaderValueFromOptions(options)
+	return function xPermittedCrossDomainPoliciesMiddleware(_req, res, next) {
+		res.setHeader("X-Permitted-Cross-Domain-Policies", headerValue)
+		next()
+	}
+}
+
+function xPoweredBy() {
+	return function xPoweredByMiddleware(_req, res, next) {
+		res.removeHeader("X-Powered-By")
+		next()
+	}
+}
+
+function xXssProtection() {
+	return function xXssProtectionMiddleware(_req, res, next) {
+		res.setHeader("X-XSS-Protection", "0")
+		next()
+	}
+}
+
+function getMiddlewareFunctionsFromOptions(options) {
+	var _a, _b, _c, _d, _e, _f, _g, _h
+	const result = []
+	switch (options.contentSecurityPolicy) {
+		case undefined:
+		case true:
+			result.push(contentSecurityPolicy())
+			break
+		case false:
+			break
+		default:
+			result.push(contentSecurityPolicy(options.contentSecurityPolicy))
+			break
+	}
+	switch (options.crossOriginEmbedderPolicy) {
+		case undefined:
+		case false:
+			break
+		case true:
+			result.push(crossOriginEmbedderPolicy())
+			break
+		default:
+			result.push(crossOriginEmbedderPolicy(options.crossOriginEmbedderPolicy))
+			break
+	}
+	switch (options.crossOriginOpenerPolicy) {
+		case undefined:
+		case true:
+			result.push(crossOriginOpenerPolicy())
+			break
+		case false:
+			break
+		default:
+			result.push(crossOriginOpenerPolicy(options.crossOriginOpenerPolicy))
+			break
+	}
+	switch (options.crossOriginResourcePolicy) {
+		case undefined:
+		case true:
+			result.push(crossOriginResourcePolicy())
+			break
+		case false:
+			break
+		default:
+			result.push(crossOriginResourcePolicy(options.crossOriginResourcePolicy))
+			break
+	}
+	switch (options.originAgentCluster) {
+		case undefined:
+		case true:
+			result.push(originAgentCluster())
+			break
+		case false:
+			break
+		default:
+			console.warn("Origin-Agent-Cluster does not take options. Remove the property to silence this warning.")
+			result.push(originAgentCluster())
+			break
+	}
+	switch (options.referrerPolicy) {
+		case undefined:
+		case true:
+			result.push(referrerPolicy())
+			break
+		case false:
+			break
+		default:
+			result.push(referrerPolicy(options.referrerPolicy))
+			break
+	}
+	if ("strictTransportSecurity" in options && "hsts" in options) {
+		throw new Error("Strict-Transport-Security option was specified twice. Remove `hsts` to silence this warning.")
+	}
+	const strictTransportSecurityOption = (_a = options.strictTransportSecurity) !== null && _a !== void 0 ? _a : options.hsts
+	switch (strictTransportSecurityOption) {
+		case undefined:
+		case true:
+			result.push(strictTransportSecurity())
+			break
+		case false:
+			break
+		default:
+			result.push(strictTransportSecurity(strictTransportSecurityOption))
+			break
+	}
+	if ("xContentTypeOptions" in options && "noSniff" in options) {
+		throw new Error("X-Content-Type-Options option was specified twice. Remove `noSniff` to silence this warning.")
+	}
+	const xContentTypeOptionsOption = (_b = options.xContentTypeOptions) !== null && _b !== void 0 ? _b : options.noSniff
+	switch (xContentTypeOptionsOption) {
+		case undefined:
+		case true:
+			result.push(xContentTypeOptions())
+			break
+		case false:
+			break
+		default:
+			console.warn("X-Content-Type-Options does not take options. Remove the property to silence this warning.")
+			result.push(xContentTypeOptions())
+			break
+	}
+	if ("xDnsPrefetchControl" in options && "dnsPrefetchControl" in options) {
+		throw new Error("X-DNS-Prefetch-Control option was specified twice. Remove `dnsPrefetchControl` to silence this warning.")
+	}
+	const xDnsPrefetchControlOption = (_c = options.xDnsPrefetchControl) !== null && _c !== void 0 ? _c : options.dnsPrefetchControl
+	switch (xDnsPrefetchControlOption) {
+		case undefined:
+		case true:
+			result.push(xDnsPrefetchControl())
+			break
+		case false:
+			break
+		default:
+			result.push(xDnsPrefetchControl(xDnsPrefetchControlOption))
+			break
+	}
+	if ("xDownloadOptions" in options && "ieNoOpen" in options) {
+		throw new Error("X-Download-Options option was specified twice. Remove `ieNoOpen` to silence this warning.")
+	}
+	const xDownloadOptionsOption = (_d = options.xDownloadOptions) !== null && _d !== void 0 ? _d : options.ieNoOpen
+	switch (xDownloadOptionsOption) {
+		case undefined:
+		case true:
+			result.push(xDownloadOptions())
+			break
+		case false:
+			break
+		default:
+			console.warn("X-Download-Options does not take options. Remove the property to silence this warning.")
+			result.push(xDownloadOptions())
+			break
+	}
+	if ("xFrameOptions" in options && "frameguard" in options) {
+		throw new Error("X-Frame-Options option was specified twice. Remove `frameguard` to silence this warning.")
+	}
+	const xFrameOptionsOption = (_e = options.xFrameOptions) !== null && _e !== void 0 ? _e : options.frameguard
+	switch (xFrameOptionsOption) {
+		case undefined:
+		case true:
+			result.push(xFrameOptions())
+			break
+		case false:
+			break
+		default:
+			result.push(xFrameOptions(xFrameOptionsOption))
+			break
+	}
+	if ("xPermittedCrossDomainPolicies" in options && "permittedCrossDomainPolicies" in options) {
+		throw new Error("X-Permitted-Cross-Domain-Policies option was specified twice. Remove `permittedCrossDomainPolicies` to silence this warning.")
+	}
+	const xPermittedCrossDomainPoliciesOption = (_f = options.xPermittedCrossDomainPolicies) !== null && _f !== void 0 ? _f : options.permittedCrossDomainPolicies
+	switch (xPermittedCrossDomainPoliciesOption) {
+		case undefined:
+		case true:
+			result.push(xPermittedCrossDomainPolicies())
+			break
+		case false:
+			break
+		default:
+			result.push(xPermittedCrossDomainPolicies(xPermittedCrossDomainPoliciesOption))
+			break
+	}
+	if ("xPoweredBy" in options && "hidePoweredBy" in options) {
+		throw new Error("X-Powered-By option was specified twice. Remove `hidePoweredBy` to silence this warning.")
+	}
+	const xPoweredByOption = (_g = options.xPoweredBy) !== null && _g !== void 0 ? _g : options.hidePoweredBy
+	switch (xPoweredByOption) {
+		case undefined:
+		case true:
+			result.push(xPoweredBy())
+			break
+		case false:
+			break
+		default:
+			console.warn("X-Powered-By does not take options. Remove the property to silence this warning.")
+			result.push(xPoweredBy())
+			break
+	}
+	if ("xXssProtection" in options && "xssFilter" in options) {
+		throw new Error("X-XSS-Protection option was specified twice. Remove `xssFilter` to silence this warning.")
+	}
+	const xXssProtectionOption = (_h = options.xXssProtection) !== null && _h !== void 0 ? _h : options.xssFilter
+	switch (xXssProtectionOption) {
+		case undefined:
+		case true:
+			result.push(xXssProtection())
+			break
+		case false:
+			break
+		default:
+			console.warn("X-XSS-Protection does not take options. Remove the property to silence this warning.")
+			result.push(xXssProtection())
+			break
+	}
+	return result
+}
+const helmet = Object.assign(
+	function helmet(options = {}) {
+		var _a
+		// People should be able to pass an options object with no prototype,
+		// so we want this optional chaining.
+		// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
+		if (((_a = options.constructor) === null || _a === void 0 ? void 0 : _a.name) === "IncomingMessage") {
+			throw new Error("It appears you have done something like `app.use(helmet)`, but it should be `app.use(helmet())`.")
+		}
+		const middlewareFunctions = getMiddlewareFunctionsFromOptions(options)
+		return function helmetMiddleware(req, res, next) {
+			let middlewareIndex = 0
+			;(function internalNext(err) {
+				if (err) {
+					next(err)
+					return
+				}
+				const middlewareFunction = middlewareFunctions[middlewareIndex]
+				if (middlewareFunction) {
+					middlewareIndex++
+					middlewareFunction(req, res, internalNext)
+				} else {
+					next()
+				}
+			})()
+		}
+	},
+	{
+		contentSecurityPolicy,
+		crossOriginEmbedderPolicy,
+		crossOriginOpenerPolicy,
+		crossOriginResourcePolicy,
+		originAgentCluster,
+		referrerPolicy,
+		strictTransportSecurity,
+		xContentTypeOptions,
+		xDnsPrefetchControl,
+		xDownloadOptions,
+		xFrameOptions,
+		xPermittedCrossDomainPolicies,
+		xPoweredBy,
+		xXssProtection,
+		// Legacy aliases
+		dnsPrefetchControl: xDnsPrefetchControl,
+		xssFilter: xXssProtection,
+		permittedCrossDomainPolicies: xPermittedCrossDomainPolicies,
+		ieNoOpen: xDownloadOptions,
+		noSniff: xContentTypeOptions,
+		frameguard: xFrameOptions,
+		hidePoweredBy: xPoweredBy,
+		hsts: strictTransportSecurity
+	}
+)
+
+exports.contentSecurityPolicy = contentSecurityPolicy
+exports.crossOriginEmbedderPolicy = crossOriginEmbedderPolicy
+exports.crossOriginOpenerPolicy = crossOriginOpenerPolicy
+exports.crossOriginResourcePolicy = crossOriginResourcePolicy
+exports.default = helmet
+exports.dnsPrefetchControl = xDnsPrefetchControl
+exports.frameguard = xFrameOptions
+exports.hidePoweredBy = xPoweredBy
+exports.hsts = strictTransportSecurity
+exports.ieNoOpen = xDownloadOptions
+exports.noSniff = xContentTypeOptions
+exports.originAgentCluster = originAgentCluster
+exports.permittedCrossDomainPolicies = xPermittedCrossDomainPolicies
+exports.referrerPolicy = referrerPolicy
+exports.strictTransportSecurity = strictTransportSecurity
+exports.xContentTypeOptions = xContentTypeOptions
+exports.xDnsPrefetchControl = xDnsPrefetchControl
+exports.xDownloadOptions = xDownloadOptions
+exports.xFrameOptions = xFrameOptions
+exports.xPermittedCrossDomainPolicies = xPermittedCrossDomainPolicies
+exports.xPoweredBy = xPoweredBy
+exports.xXssProtection = xXssProtection
+exports.xssFilter = xXssProtection
+
+module.exports = exports.default
+module.exports.default = module.exports