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url.ts
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url.ts
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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
import {
ERR_INVALID_ARG_TYPE,
ERR_INVALID_ARG_VALUE,
ERR_INVALID_FILE_URL_HOST,
ERR_INVALID_FILE_URL_PATH,
ERR_INVALID_URL,
ERR_INVALID_URL_SCHEME,
} from "./internal/errors.ts";
import { validateString } from "./internal/validators.mjs";
import {
CHAR_0,
CHAR_9,
CHAR_AT,
CHAR_BACKWARD_SLASH,
CHAR_CARRIAGE_RETURN,
CHAR_CIRCUMFLEX_ACCENT,
CHAR_DOT,
CHAR_DOUBLE_QUOTE,
CHAR_FORM_FEED,
CHAR_FORWARD_SLASH,
CHAR_GRAVE_ACCENT,
CHAR_HASH,
CHAR_HYPHEN_MINUS,
CHAR_LEFT_ANGLE_BRACKET,
CHAR_LEFT_CURLY_BRACKET,
CHAR_LEFT_SQUARE_BRACKET,
CHAR_LINE_FEED,
CHAR_LOWERCASE_A,
CHAR_LOWERCASE_Z,
CHAR_NO_BREAK_SPACE,
CHAR_PERCENT,
CHAR_PLUS,
CHAR_QUESTION_MARK,
CHAR_RIGHT_ANGLE_BRACKET,
CHAR_RIGHT_CURLY_BRACKET,
CHAR_RIGHT_SQUARE_BRACKET,
CHAR_SEMICOLON,
CHAR_SINGLE_QUOTE,
CHAR_SPACE,
CHAR_TAB,
CHAR_UNDERSCORE,
CHAR_UPPERCASE_A,
CHAR_UPPERCASE_Z,
CHAR_VERTICAL_LINE,
CHAR_ZERO_WIDTH_NOBREAK_SPACE,
} from "../path/_constants.ts";
import * as path from "./path.ts";
import { toASCII } from "./internal/idna.ts";
import { isWindows, osType } from "../_util/os.ts";
import { encodeStr, hexTable } from "./internal/querystring.ts";
import querystring from "./querystring.ts";
import type { ParsedUrlQuery, ParsedUrlQueryInput } from "./querystring.ts";
const forwardSlashRegEx = /\//g;
const percentRegEx = /%/g;
const backslashRegEx = /\\/g;
const newlineRegEx = /\n/g;
const carriageReturnRegEx = /\r/g;
const tabRegEx = /\t/g;
// Reference: RFC 3986, RFC 1808, RFC 2396
// define these here so at least they only have to be
// compiled once on the first module load.
const protocolPattern = /^[a-z0-9.+-]+:/i;
const portPattern = /:[0-9]*$/;
const hostPattern = /^\/\/[^@/]+@[^@/]+/;
// Special case for a simple path URL
const simplePathPattern = /^(\/\/?(?!\/)[^?\s]*)(\?[^\s]*)?$/;
// Protocols that can allow "unsafe" and "unwise" chars.
const unsafeProtocol = new Set(["javascript", "javascript:"]);
// Protocols that never have a hostname.
const hostlessProtocol = new Set(["javascript", "javascript:"]);
// Protocols that always contain a // bit.
const slashedProtocol = new Set([
"http",
"http:",
"https",
"https:",
"ftp",
"ftp:",
"gopher",
"gopher:",
"file",
"file:",
"ws",
"ws:",
"wss",
"wss:",
]);
const hostnameMaxLen = 255;
// These characters do not need escaping:
// ! - . _ ~
// ' ( ) * :
// digits
// alpha (uppercase)
// alpha (lowercase)
// deno-fmt-ignore
const noEscapeAuth = new Int8Array([
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0x00 - 0x0F
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0x10 - 0x1F
0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 1, 1, 0, // 0x20 - 0x2F
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, // 0x30 - 0x3F
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 0x40 - 0x4F
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, // 0x50 - 0x5F
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 0x60 - 0x6F
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, // 0x70 - 0x7F
]);
// This prevents some common spoofing bugs due to our use of IDNA toASCII. For
// compatibility, the set of characters we use here is the *intersection* of
// "forbidden host code point" in the WHATWG URL Standard [1] and the
// characters in the host parsing loop in Url.prototype.parse, with the
// following additions:
//
// - ':' since this could cause a "protocol spoofing" bug
// - '@' since this could cause parts of the hostname to be confused with auth
// - '[' and ']' since this could cause a non-IPv6 hostname to be interpreted
// as IPv6 by isIpv6Hostname above
//
// [1]: https://url.spec.whatwg.org/#forbidden-host-code-point
const forbiddenHostChars = /[\0\t\n\r #%/:<>?@[\\\]^|]/;
// For IPv6, permit '[', ']', and ':'.
const forbiddenHostCharsIpv6 = /[\0\t\n\r #%/<>?@\\^|]/;
const _url = URL;
export { _url as URL };
// Legacy URL API
export class Url {
public protocol: string | null;
public slashes: boolean | null;
public auth: string | null;
public host: string | null;
public port: string | null;
public hostname: string | null;
public hash: string | null;
public search: string | null;
public query: string | ParsedUrlQuery | null;
public pathname: string | null;
public path: string | null;
public href: string | null;
[key: string]: unknown;
constructor() {
this.protocol = null;
this.slashes = null;
this.auth = null;
this.host = null;
this.port = null;
this.hostname = null;
this.hash = null;
this.search = null;
this.query = null;
this.pathname = null;
this.path = null;
this.href = null;
}
#parseHost() {
let host = this.host || "";
let port: RegExpExecArray | null | string = portPattern.exec(host);
if (port) {
port = port[0];
if (port !== ":") {
this.port = port.slice(1);
}
host = host.slice(0, host.length - port.length);
}
if (host) this.hostname = host;
}
public resolve(relative: string) {
return this.resolveObject(parse(relative, false, true)).format();
}
public resolveObject(relative: string | Url) {
if (typeof relative === "string") {
const rel = new Url();
rel.urlParse(relative, false, true);
relative = rel;
}
const result = new Url();
const tkeys = Object.keys(this);
for (let tk = 0; tk < tkeys.length; tk++) {
const tkey = tkeys[tk];
result[tkey] = this[tkey];
}
// Hash is always overridden, no matter what.
// even href="" will remove it.
result.hash = relative.hash;
// If the relative url is empty, then there's nothing left to do here.
if (relative.href === "") {
result.href = result.format();
return result;
}
// Hrefs like //foo/bar always cut to the protocol.
if (relative.slashes && !relative.protocol) {
// Take everything except the protocol from relative
const rkeys = Object.keys(relative);
for (let rk = 0; rk < rkeys.length; rk++) {
const rkey = rkeys[rk];
if (rkey !== "protocol") result[rkey] = relative[rkey];
}
// urlParse appends trailing / to urls like http://www.example.com
if (
result.protocol &&
slashedProtocol.has(result.protocol) &&
result.hostname &&
!result.pathname
) {
result.path = result.pathname = "/";
}
result.href = result.format();
return result;
}
if (relative.protocol && relative.protocol !== result.protocol) {
// If it's a known url protocol, then changing
// the protocol does weird things
// first, if it's not file:, then we MUST have a host,
// and if there was a path
// to begin with, then we MUST have a path.
// if it is file:, then the host is dropped,
// because that's known to be hostless.
// anything else is assumed to be absolute.
if (!slashedProtocol.has(relative.protocol)) {
const keys = Object.keys(relative);
for (let v = 0; v < keys.length; v++) {
const k = keys[v];
result[k] = relative[k];
}
result.href = result.format();
return result;
}
result.protocol = relative.protocol;
if (
!relative.host &&
!/^file:?$/.test(relative.protocol) &&
!hostlessProtocol.has(relative.protocol)
) {
const relPath = (relative.pathname || "").split("/");
while (relPath.length && !(relative.host = relPath.shift() || null));
if (!relative.host) relative.host = "";
if (!relative.hostname) relative.hostname = "";
if (relPath[0] !== "") relPath.unshift("");
if (relPath.length < 2) relPath.unshift("");
result.pathname = relPath.join("/");
} else {
result.pathname = relative.pathname;
}
result.search = relative.search;
result.query = relative.query;
result.host = relative.host || "";
result.auth = relative.auth;
result.hostname = relative.hostname || relative.host;
result.port = relative.port;
// To support http.request
if (result.pathname || result.search) {
const p = result.pathname || "";
const s = result.search || "";
result.path = p + s;
}
result.slashes = result.slashes || relative.slashes;
result.href = result.format();
return result;
}
const isSourceAbs = result.pathname && result.pathname.charAt(0) === "/";
const isRelAbs = relative.host ||
(relative.pathname && relative.pathname.charAt(0) === "/");
let mustEndAbs: string | boolean | number | null = isRelAbs ||
isSourceAbs || (result.host && relative.pathname);
const removeAllDots = mustEndAbs;
let srcPath = (result.pathname && result.pathname.split("/")) || [];
const relPath = (relative.pathname && relative.pathname.split("/")) || [];
const noLeadingSlashes = result.protocol &&
!slashedProtocol.has(result.protocol);
// If the url is a non-slashed url, then relative
// links like ../.. should be able
// to crawl up to the hostname, as well. This is strange.
// result.protocol has already been set by now.
// Later on, put the first path part into the host field.
if (noLeadingSlashes) {
result.hostname = "";
result.port = null;
if (result.host) {
if (srcPath[0] === "") srcPath[0] = result.host;
else srcPath.unshift(result.host);
}
result.host = "";
if (relative.protocol) {
relative.hostname = null;
relative.port = null;
result.auth = null;
if (relative.host) {
if (relPath[0] === "") relPath[0] = relative.host;
else relPath.unshift(relative.host);
}
relative.host = null;
}
mustEndAbs = mustEndAbs && (relPath[0] === "" || srcPath[0] === "");
}
if (isRelAbs) {
// it's absolute.
if (relative.host || relative.host === "") {
if (result.host !== relative.host) result.auth = null;
result.host = relative.host;
result.port = relative.port;
}
if (relative.hostname || relative.hostname === "") {
if (result.hostname !== relative.hostname) result.auth = null;
result.hostname = relative.hostname;
}
result.search = relative.search;
result.query = relative.query;
srcPath = relPath;
// Fall through to the dot-handling below.
} else if (relPath.length) {
// it's relative
// throw away the existing file, and take the new path instead.
if (!srcPath) srcPath = [];
srcPath.pop();
srcPath = srcPath.concat(relPath);
result.search = relative.search;
result.query = relative.query;
} else if (relative.search !== null && relative.search !== undefined) {
// Just pull out the search.
// like href='?foo'.
// Put this after the other two cases because it simplifies the booleans
if (noLeadingSlashes) {
result.hostname = result.host = srcPath.shift() || null;
// Occasionally the auth can get stuck only in host.
// This especially happens in cases like
// url.resolveObject('mailto:local1@domain1', 'local2@domain2')
const authInHost = result.host && result.host.indexOf("@") > 0 &&
result.host.split("@");
if (authInHost) {
result.auth = authInHost.shift() || null;
result.host = result.hostname = authInHost.shift() || null;
}
}
result.search = relative.search;
result.query = relative.query;
// To support http.request
if (result.pathname !== null || result.search !== null) {
result.path = (result.pathname ? result.pathname : "") +
(result.search ? result.search : "");
}
result.href = result.format();
return result;
}
if (!srcPath.length) {
// No path at all. All other things were already handled above.
result.pathname = null;
// To support http.request
if (result.search) {
result.path = "/" + result.search;
} else {
result.path = null;
}
result.href = result.format();
return result;
}
// If a url ENDs in . or .., then it must get a trailing slash.
// however, if it ends in anything else non-slashy,
// then it must NOT get a trailing slash.
let last = srcPath.slice(-1)[0];
const hasTrailingSlash =
((result.host || relative.host || srcPath.length > 1) &&
(last === "." || last === "..")) ||
last === "";
// Strip single dots, resolve double dots to parent dir
// if the path tries to go above the root, `up` ends up > 0
let up = 0;
for (let i = srcPath.length - 1; i >= 0; i--) {
last = srcPath[i];
if (last === ".") {
srcPath.splice(i, 1);
} else if (last === "..") {
srcPath.splice(i, 1);
up++;
} else if (up) {
srcPath.splice(i, 1);
up--;
}
}
// If the path is allowed to go above the root, restore leading ..s
if (!mustEndAbs && !removeAllDots) {
while (up--) {
srcPath.unshift("..");
}
}
if (
mustEndAbs &&
srcPath[0] !== "" &&
(!srcPath[0] || srcPath[0].charAt(0) !== "/")
) {
srcPath.unshift("");
}
if (hasTrailingSlash && srcPath.join("/").substr(-1) !== "/") {
srcPath.push("");
}
const isAbsolute = srcPath[0] === "" ||
(srcPath[0] && srcPath[0].charAt(0) === "/");
// put the host back
if (noLeadingSlashes) {
result.hostname = result.host = isAbsolute
? ""
: srcPath.length
? srcPath.shift() || null
: "";
// Occasionally the auth can get stuck only in host.
// This especially happens in cases like
// url.resolveObject('mailto:local1@domain1', 'local2@domain2')
const authInHost = result.host && result.host.indexOf("@") > 0
? result.host.split("@")
: false;
if (authInHost) {
result.auth = authInHost.shift() || null;
result.host = result.hostname = authInHost.shift() || null;
}
}
mustEndAbs = mustEndAbs || (result.host && srcPath.length);
if (mustEndAbs && !isAbsolute) {
srcPath.unshift("");
}
if (!srcPath.length) {
result.pathname = null;
result.path = null;
} else {
result.pathname = srcPath.join("/");
}
// To support request.http
if (result.pathname !== null || result.search !== null) {
result.path = (result.pathname ? result.pathname : "") +
(result.search ? result.search : "");
}
result.auth = relative.auth || result.auth;
result.slashes = result.slashes || relative.slashes;
result.href = result.format();
return result;
}
format() {
let auth = this.auth || "";
if (auth) {
auth = encodeStr(auth, noEscapeAuth, hexTable);
auth += "@";
}
let protocol = this.protocol || "";
let pathname = this.pathname || "";
let hash = this.hash || "";
let host = "";
let query = "";
if (this.host) {
host = auth + this.host;
} else if (this.hostname) {
host = auth +
(this.hostname.includes(":") && !isIpv6Hostname(this.hostname)
? "[" + this.hostname + "]"
: this.hostname);
if (this.port) {
host += ":" + this.port;
}
}
if (this.query !== null && typeof this.query === "object") {
query = querystring.stringify(this.query);
}
let search = this.search || (query && "?" + query) || "";
if (protocol && protocol.charCodeAt(protocol.length - 1) !== 58 /* : */) {
protocol += ":";
}
let newPathname = "";
let lastPos = 0;
for (let i = 0; i < pathname.length; ++i) {
switch (pathname.charCodeAt(i)) {
case CHAR_HASH:
if (i - lastPos > 0) {
newPathname += pathname.slice(lastPos, i);
}
newPathname += "%23";
lastPos = i + 1;
break;
case CHAR_QUESTION_MARK:
if (i - lastPos > 0) {
newPathname += pathname.slice(lastPos, i);
}
newPathname += "%3F";
lastPos = i + 1;
break;
}
}
if (lastPos > 0) {
if (lastPos !== pathname.length) {
pathname = newPathname + pathname.slice(lastPos);
} else pathname = newPathname;
}
// Only the slashedProtocols get the //. Not mailto:, xmpp:, etc.
// unless they had them to begin with.
if (this.slashes || slashedProtocol.has(protocol)) {
if (this.slashes || host) {
if (pathname && pathname.charCodeAt(0) !== CHAR_FORWARD_SLASH) {
pathname = "/" + pathname;
}
host = "//" + host;
} else if (
protocol.length >= 4 &&
protocol.charCodeAt(0) === 102 /* f */ &&
protocol.charCodeAt(1) === 105 /* i */ &&
protocol.charCodeAt(2) === 108 /* l */ &&
protocol.charCodeAt(3) === 101 /* e */
) {
host = "//";
}
}
search = search.replace(/#/g, "%23");
if (hash && hash.charCodeAt(0) !== CHAR_HASH) {
hash = "#" + hash;
}
if (search && search.charCodeAt(0) !== CHAR_QUESTION_MARK) {
search = "?" + search;
}
return protocol + host + pathname + search + hash;
}
public urlParse(
url: string,
parseQueryString: boolean,
slashesDenoteHost: boolean,
) {
validateString(url, "url");
// Copy chrome, IE, opera backslash-handling behavior.
// Back slashes before the query string get converted to forward slashes
// See: https://code.google.com/p/chromium/issues/detail?id=25916
let hasHash = false;
let start = -1;
let end = -1;
let rest = "";
let lastPos = 0;
for (let i = 0, inWs = false, split = false; i < url.length; ++i) {
const code = url.charCodeAt(i);
// Find first and last non-whitespace characters for trimming
const isWs = code === CHAR_SPACE ||
code === CHAR_TAB ||
code === CHAR_CARRIAGE_RETURN ||
code === CHAR_LINE_FEED ||
code === CHAR_FORM_FEED ||
code === CHAR_NO_BREAK_SPACE ||
code === CHAR_ZERO_WIDTH_NOBREAK_SPACE;
if (start === -1) {
if (isWs) continue;
lastPos = start = i;
} else if (inWs) {
if (!isWs) {
end = -1;
inWs = false;
}
} else if (isWs) {
end = i;
inWs = true;
}
// Only convert backslashes while we haven't seen a split character
if (!split) {
switch (code) {
case CHAR_HASH:
hasHash = true;
// Fall through
case CHAR_QUESTION_MARK:
split = true;
break;
case CHAR_BACKWARD_SLASH:
if (i - lastPos > 0) rest += url.slice(lastPos, i);
rest += "/";
lastPos = i + 1;
break;
}
} else if (!hasHash && code === CHAR_HASH) {
hasHash = true;
}
}
// Check if string was non-empty (including strings with only whitespace)
if (start !== -1) {
if (lastPos === start) {
// We didn't convert any backslashes
if (end === -1) {
if (start === 0) rest = url;
else rest = url.slice(start);
} else {
rest = url.slice(start, end);
}
} else if (end === -1 && lastPos < url.length) {
// We converted some backslashes and have only part of the entire string
rest += url.slice(lastPos);
} else if (end !== -1 && lastPos < end) {
// We converted some backslashes and have only part of the entire string
rest += url.slice(lastPos, end);
}
}
if (!slashesDenoteHost && !hasHash) {
// Try fast path regexp
const simplePath = simplePathPattern.exec(rest);
if (simplePath) {
this.path = rest;
this.href = rest;
this.pathname = simplePath[1];
if (simplePath[2]) {
this.search = simplePath[2];
if (parseQueryString) {
this.query = querystring.parse(this.search.slice(1));
} else {
this.query = this.search.slice(1);
}
} else if (parseQueryString) {
this.search = null;
this.query = Object.create(null);
}
return this;
}
}
let proto: RegExpExecArray | null | string = protocolPattern.exec(rest);
let lowerProto = "";
if (proto) {
proto = proto[0];
lowerProto = proto.toLowerCase();
this.protocol = lowerProto;
rest = rest.slice(proto.length);
}
// Figure out if it's got a host
// user@server is *always* interpreted as a hostname, and url
// resolution will treat //foo/bar as host=foo,path=bar because that's
// how the browser resolves relative URLs.
let slashes;
if (slashesDenoteHost || proto || hostPattern.test(rest)) {
slashes = rest.charCodeAt(0) === CHAR_FORWARD_SLASH &&
rest.charCodeAt(1) === CHAR_FORWARD_SLASH;
if (slashes && !(proto && hostlessProtocol.has(lowerProto))) {
rest = rest.slice(2);
this.slashes = true;
}
}
if (
!hostlessProtocol.has(lowerProto) &&
(slashes || (proto && !slashedProtocol.has(proto)))
) {
// there's a hostname.
// the first instance of /, ?, ;, or # ends the host.
//
// If there is an @ in the hostname, then non-host chars *are* allowed
// to the left of the last @ sign, unless some host-ending character
// comes *before* the @-sign.
// URLs are obnoxious.
//
// ex:
// http://a@b@c/ => user:a@b host:c
// http://a@b?@c => user:a host:b path:/?@c
let hostEnd = -1;
let atSign = -1;
let nonHost = -1;
for (let i = 0; i < rest.length; ++i) {
switch (rest.charCodeAt(i)) {
case CHAR_TAB:
case CHAR_LINE_FEED:
case CHAR_CARRIAGE_RETURN:
case CHAR_SPACE:
case CHAR_DOUBLE_QUOTE:
case CHAR_PERCENT:
case CHAR_SINGLE_QUOTE:
case CHAR_SEMICOLON:
case CHAR_LEFT_ANGLE_BRACKET:
case CHAR_RIGHT_ANGLE_BRACKET:
case CHAR_BACKWARD_SLASH:
case CHAR_CIRCUMFLEX_ACCENT:
case CHAR_GRAVE_ACCENT:
case CHAR_LEFT_CURLY_BRACKET:
case CHAR_VERTICAL_LINE:
case CHAR_RIGHT_CURLY_BRACKET:
// Characters that are never ever allowed in a hostname from RFC 2396
if (nonHost === -1) nonHost = i;
break;
case CHAR_HASH:
case CHAR_FORWARD_SLASH:
case CHAR_QUESTION_MARK:
// Find the first instance of any host-ending characters
if (nonHost === -1) nonHost = i;
hostEnd = i;
break;
case CHAR_AT:
// At this point, either we have an explicit point where the
// auth portion cannot go past, or the last @ char is the decider.
atSign = i;
nonHost = -1;
break;
}
if (hostEnd !== -1) break;
}
start = 0;
if (atSign !== -1) {
this.auth = decodeURIComponent(rest.slice(0, atSign));
start = atSign + 1;
}
if (nonHost === -1) {
this.host = rest.slice(start);
rest = "";
} else {
this.host = rest.slice(start, nonHost);
rest = rest.slice(nonHost);
}
// pull out port.
this.#parseHost();
// We've indicated that there is a hostname,
// so even if it's empty, it has to be present.
if (typeof this.hostname !== "string") this.hostname = "";
const hostname = this.hostname;
// If hostname begins with [ and ends with ]
// assume that it's an IPv6 address.
const ipv6Hostname = isIpv6Hostname(hostname);
// validate a little.
if (!ipv6Hostname) {
rest = getHostname(this, rest, hostname);
}
if (this.hostname.length > hostnameMaxLen) {
this.hostname = "";
} else {
// Hostnames are always lower case.
this.hostname = this.hostname.toLowerCase();
}
if (this.hostname !== "") {
if (ipv6Hostname) {
if (forbiddenHostCharsIpv6.test(this.hostname)) {
throw new ERR_INVALID_URL(url);
}
} else {
// IDNA Support: Returns a punycoded representation of "domain".
// It only converts parts of the domain name that
// have non-ASCII characters, i.e. it doesn't matter if
// you call it with a domain that already is ASCII-only.
// Use lenient mode (`true`) to try to support even non-compliant
// URLs.
this.hostname = toASCII(this.hostname);
// Prevent two potential routes of hostname spoofing.
// 1. If this.hostname is empty, it must have become empty due to toASCII
// since we checked this.hostname above.
// 2. If any of forbiddenHostChars appears in this.hostname, it must have
// also gotten in due to toASCII. This is since getHostname would have
// filtered them out otherwise.
// Rather than trying to correct this by moving the non-host part into
// the pathname as we've done in getHostname, throw an exception to
// convey the severity of this issue.
if (this.hostname === "" || forbiddenHostChars.test(this.hostname)) {
throw new ERR_INVALID_URL(url);
}
}
}
const p = this.port ? ":" + this.port : "";
const h = this.hostname || "";
this.host = h + p;
// strip [ and ] from the hostname
// the host field still retains them, though
if (ipv6Hostname) {
this.hostname = this.hostname.slice(1, -1);
if (rest[0] !== "/") {
rest = "/" + rest;
}
}
}
// Now rest is set to the post-host stuff.
// Chop off any delim chars.
if (!unsafeProtocol.has(lowerProto)) {
// First, make 100% sure that any "autoEscape" chars get
// escaped, even if encodeURIComponent doesn't think they
// need to be.
rest = autoEscapeStr(rest);
}
let questionIdx = -1;
let hashIdx = -1;
for (let i = 0; i < rest.length; ++i) {
const code = rest.charCodeAt(i);
if (code === CHAR_HASH) {
this.hash = rest.slice(i);
hashIdx = i;
break;
} else if (code === CHAR_QUESTION_MARK && questionIdx === -1) {
questionIdx = i;
}
}
if (questionIdx !== -1) {
if (hashIdx === -1) {
this.search = rest.slice(questionIdx);
this.query = rest.slice(questionIdx + 1);
} else {
this.search = rest.slice(questionIdx, hashIdx);
this.query = rest.slice(questionIdx + 1, hashIdx);
}
if (parseQueryString) {
this.query = querystring.parse(this.query);
}
} else if (parseQueryString) {
// No query string, but parseQueryString still requested
this.search = null;
this.query = Object.create(null);
}
const useQuestionIdx = questionIdx !== -1 &&
(hashIdx === -1 || questionIdx < hashIdx);
const firstIdx = useQuestionIdx ? questionIdx : hashIdx;
if (firstIdx === -1) {
if (rest.length > 0) this.pathname = rest;
} else if (firstIdx > 0) {
this.pathname = rest.slice(0, firstIdx);
}
if (slashedProtocol.has(lowerProto) && this.hostname && !this.pathname) {
this.pathname = "/";
}
// To support http.request
if (this.pathname || this.search) {
const p = this.pathname || "";
const s = this.search || "";
this.path = p + s;
}
// Finally, reconstruct the href based on what has been validated.
this.href = this.format();
return this;
}
}
interface UrlObject {
auth?: string | null | undefined;
hash?: string | null | undefined;
host?: string | null | undefined;
hostname?: string | null | undefined;
href?: string | null | undefined;
pathname?: string | null | undefined;
protocol?: string | null | undefined;
search?: string | null | undefined;
slashes?: boolean | null | undefined;
port?: string | number | null | undefined;
query?: string | null | ParsedUrlQueryInput | undefined;
}
export function format(
urlObject: string | URL | Url | UrlObject,
options?: {
auth: boolean;
fragment: boolean;
search: boolean;
unicode: boolean;
},
): string {
if (typeof urlObject === "string") {
urlObject = parse(urlObject, true, false);
} else if (typeof urlObject !== "object" || urlObject === null) {
throw new ERR_INVALID_ARG_TYPE(
"urlObject",
["Object", "string"],
urlObject,
);
} else if (!(urlObject instanceof Url)) {
if (urlObject instanceof URL) {
return formatWhatwg(urlObject, options);
}
return Url.prototype.format.call(urlObject);
}
return (urlObject as Url).format();
}
/**
* The URL object has both a `toString()` method and `href` property that return string serializations of the URL.
* These are not, however, customizable in any way.
* This method allows for basic customization of the output.
* @see Tested in `parallel/test-url-format-whatwg.js`.
* @param urlObject
* @param options
* @param options.auth `true` if the serialized URL string should include the username and password, `false` otherwise. **Default**: `true`.
* @param options.fragment `true` if the serialized URL string should include the fragment, `false` otherwise. **Default**: `true`.
* @param options.search `true` if the serialized URL string should include the search query, **Default**: `true`.
* @param options.unicode `true` if Unicode characters appearing in the host component of the URL string should be encoded directly as opposed to being Punycode encoded. **Default**: `false`.
* @returns a customizable serialization of a URL `String` representation of a `WHATWG URL` object.
*/
function formatWhatwg(
urlObject: string | URL,
options?: {
auth: boolean;
fragment: boolean;
search: boolean;
unicode: boolean;
},
): string {
if (typeof urlObject === "string") {
urlObject = new URL(urlObject);
}
if (options) {
if (typeof options !== "object") {
throw new ERR_INVALID_ARG_TYPE("options", "object", options);
}
}
options = {
auth: true,
fragment: true,
search: true,
unicode: false,
...options,
};
let ret = urlObject.protocol;
if (urlObject.host !== null) {
ret += "//";
const hasUsername = !!urlObject.username;
const hasPassword = !!urlObject.password;
if (options.auth && (hasUsername || hasPassword)) {
if (hasUsername) {
ret += urlObject.username;
}
if (hasPassword) {
ret += `:${urlObject.password}`;
}
ret += "@";
}