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URLUtilities.js
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/
URLUtilities.js
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/*
* Copyright (C) 2013 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
function removeURLFragment(url)
{
var hashIndex = url.indexOf("#");
if (hashIndex >= 0)
return url.substring(0, hashIndex);
return url;
}
function relativePath(path, basePath)
{
console.assert(path.charAt(0) === "/");
console.assert(basePath.charAt(0) === "/");
var pathComponents = path.split("/");
var baseComponents = basePath.replace(/\/$/, "").split("/");
var finalComponents = [];
var index = 1;
for (; index < pathComponents.length && index < baseComponents.length; ++index) {
if (pathComponents[index] !== baseComponents[index])
break;
}
for (var i = index; i < baseComponents.length; ++i)
finalComponents.push("..");
for (var i = index; i < pathComponents.length; ++i)
finalComponents.push(pathComponents[i]);
return finalComponents.join("/");
}
function parseSecurityOrigin(securityOrigin)
{
securityOrigin = securityOrigin ? securityOrigin.trim() : "";
let match = securityOrigin.match(/^(?<scheme>[^:]+):\/\/(?<host>[^\/:]*)(?::(?<port>[\d]+))?$/i);
if (!match)
return {scheme: null, host: null, port: null};
let scheme = match.groups.scheme.toLowerCase();
let host = match.groups.host.toLowerCase();
let port = Number(match.groups.port) || null;
return {scheme, host, port};
}
function parseDataURL(url)
{
if (!url.startsWith("data:"))
return null;
// data:[<media type>][;charset=<character set>][;base64],<data>
let match = url.match(/^data:(?<mime>[^;,]*)?(?:;charset=(?<charset>[^;,]*?))?(?<base64>;base64)?,(?<data>.*)$/);
if (!match)
return null;
let scheme = "data";
let mimeType = match.groups.mime || "text/plain";
let charset = match.groups.charset || "US-ASCII";
let base64 = !!match.groups.base64;
let data = decodeURIComponent(match.groups.data);
return {scheme, mimeType, charset, base64, data};
}
function parseURL(url)
{
let result = {
scheme: null,
userinfo: null,
host: null,
port: null,
origin: null,
path: null,
queryString: null,
fragment: null,
lastPathComponent: null,
};
// dataURLs should be handled by `parseDataURL`.
if (url && url.startsWith("data:")) {
result.scheme = "data";
return result;
}
// Internal sourceURLs will fail in URL constructor anyways.
if (isWebKitInternalScript(url))
return result;
let parsed = null;
try {
parsed = new URL(url);
} catch {
return result;
}
result.scheme = parsed.protocol.slice(0, -1); // remove trailing ":"
if (parsed.username)
result.userinfo = parsed.username;
if (parsed.password)
result.userinfo = (result.userinfo || "") + ":" + parsed.password;
if (parsed.hostname)
result.host = parsed.hostname;
if (parsed.port)
result.port = Number(parsed.port);
if (parsed.origin && parsed.origin !== "null")
result.origin = parsed.origin;
else if (result.scheme && result.host) {
result.origin = result.scheme + "://" + result.host;
if (result.port)
result.origin += ":" + result.port;
}
if (parsed.pathname)
result.path = parsed.pathname;
if (parsed.search)
result.queryString = parsed.search.substring(1); // remove leading "?"
if (parsed.hash)
result.fragment = parsed.hash.substring(1); // remove leading "#"
// Find last path component.
if (result.path && result.path !== "/") {
// Skip the trailing slash if there is one.
let endOffset = result.path.endsWith("/") ? 1 : 0;
let lastSlashIndex = result.path.lastIndexOf("/", result.path.length - 1 - endOffset);
if (lastSlashIndex !== -1)
result.lastPathComponent = result.path.substring(lastSlashIndex + 1, result.path.length - endOffset);
}
return result;
}
function absoluteURL(partialURL, baseURL)
{
partialURL = partialURL ? partialURL.trim() : "";
// Return data and javascript URLs as-is.
if (partialURL.startsWith("data:") || partialURL.startsWith("javascript:") || partialURL.startsWith("mailto:"))
return partialURL;
// If the URL has a scheme it is already a full URL, so return it.
if (parseURL(partialURL).scheme)
return partialURL;
// If there is no partial URL, just return the base URL.
if (!partialURL)
return baseURL || null;
var baseURLComponents = parseURL(baseURL);
// The base URL needs to be an absolute URL. Return null if it isn't.
if (!baseURLComponents.scheme)
return null;
// A URL that starts with "//" is a full URL without the scheme. Use the base URL scheme.
if (partialURL[0] === "/" && partialURL[1] === "/")
return baseURLComponents.scheme + ":" + partialURL;
// The path can be null for URLs that have just a scheme and host (like "http://apple.com"). So make the path be "/".
if (!baseURLComponents.path)
baseURLComponents.path = "/";
// Generate the base URL prefix that is used in the rest of the cases.
var baseURLPrefix = baseURLComponents.scheme + "://" + baseURLComponents.host + (baseURLComponents.port ? (":" + baseURLComponents.port) : "");
// A URL that starts with "?" is just a query string that gets applied to the base URL (replacing the base URL query string and fragment).
if (partialURL[0] === "?")
return baseURLPrefix + baseURLComponents.path + partialURL;
// A URL that starts with "/" is an absolute path that gets applied to the base URL (replacing the base URL path, query string and fragment).
if (partialURL[0] === "/")
return baseURLPrefix + resolveDotsInPath(partialURL);
// A URL that starts with "#" is just a fragment that gets applied to the base URL (replacing the base URL fragment, maintaining the query string).
if (partialURL[0] === "#") {
let queryStringComponent = baseURLComponents.queryString ? "?" + baseURLComponents.queryString : "";
return baseURLPrefix + baseURLComponents.path + queryStringComponent + partialURL;
}
// Generate the base path that is used in the final case by removing everything after the last "/" from the base URL's path.
var basePath = baseURLComponents.path.substring(0, baseURLComponents.path.lastIndexOf("/")) + "/";
return baseURLPrefix + resolveDotsInPath(basePath + partialURL);
}
function parseQueryString(queryString, arrayResult)
{
if (!queryString)
return arrayResult ? [] : {};
function decode(string)
{
try {
// Replace "+" with " " then decode percent encoded values.
return decodeURIComponent(string.replace(/\+/g, " "));
} catch {
return string;
}
}
var parameters = arrayResult ? [] : {};
for (let parameterString of queryString.split("&")) {
let index = parameterString.indexOf("=");
if (index === -1)
index = parameterString.length;
let name = decode(parameterString.substring(0, index));
let value = decode(parameterString.substring(index + 1));
if (arrayResult)
parameters.push({name, value});
else
parameters[name] = value;
}
return parameters;
}
WI.displayNameForURL = function(url, urlComponents, options = {})
{
if (url.startsWith("data:"))
return WI.truncateURL(url);
if (!urlComponents)
urlComponents = parseURL(url);
var displayName;
try {
displayName = decodeURIComponent(urlComponents.lastPathComponent || "");
} catch {
displayName = urlComponents.lastPathComponent;
}
if (options.allowDirectoryAsName && (urlComponents.path === "/" || (displayName && urlComponents.path.endsWith(displayName + "/"))))
displayName = "/";
return displayName || WI.displayNameForHost(urlComponents.host) || url;
};
WI.truncateURL = function(url, multiline = false, dataURIMaxSize = 6)
{
if (!url.startsWith("data:"))
return url;
const dataIndex = url.indexOf(",") + 1;
let header = url.slice(0, dataIndex);
if (multiline)
header += "\n";
const data = url.slice(dataIndex);
if (data.length < dataURIMaxSize)
return header + data;
const firstChunk = data.slice(0, Math.ceil(dataURIMaxSize / 2));
const ellipsis = "\u2026";
const middleChunk = multiline ? `\n${ellipsis}\n` : ellipsis;
const lastChunk = data.slice(-Math.floor(dataURIMaxSize / 2));
return header + firstChunk + middleChunk + lastChunk;
};
WI.urlWithoutExtension = function(urlString)
{
let url = null;
try {
url = new URL(urlString);
} catch { }
if (!url)
return urlString;
let firstDotInLastPathComponentIndex = url.pathname.indexOf(".", url.pathname.lastIndexOf("/"));
if (firstDotInLastPathComponentIndex !== -1)
url.pathname = url.pathname.substring(0, firstDotInLastPathComponentIndex);
url.search = "";
url.hash = "";
return url.toString();
};
WI.urlWithoutFragment = function(urlString)
{
try {
let url = new URL(urlString);
if (url.hash) {
url.hash = "";
return url.toString();
}
// URL.toString with an empty hash leaves the hash symbol, so we strip it.
let result = url.toString();
if (result.endsWith("#"))
return result.substring(0, result.length - 1);
return result;
} catch { }
return urlString;
};
WI.urlWithoutUserQueryOrFragment = function(urlString)
{
try {
let url = new URL(urlString);
if (url.username) {
url.username = "";
}
if (url.password) {
url.password = "";
}
if (url.search) {
url.search = "";
}
if (url.hash) {
url.hash = "";
}
let result = url.toString();
if (result.endsWith("#"))
return result.substring(0, result.length - 1);
return result;
} catch { }
return urlString;
}
WI.displayNameForHost = function(host)
{
let extensionName = WI.browserManager.extensionNameForId(host);
if (extensionName)
return extensionName;
// FIXME <rdar://problem/11237413>: This should decode punycode hostnames.
return host;
};
// https://tools.ietf.org/html/rfc7540#section-8.1.2.3
WI.h2Authority = function(components)
{
let {scheme, userinfo, host, port} = components;
let result = host || "";
// The authority MUST NOT include the deprecated "userinfo"
// subcomponent for "http" or "https" schemed URIs.
if (userinfo && (scheme !== "http" && scheme !== "https"))
result = userinfo + "@" + result;
if (port)
result += ":" + port;
return result;
};
// https://tools.ietf.org/html/rfc7540#section-8.1.2.3
WI.h2Path = function(components)
{
let {scheme, path, queryString} = components;
let result = path || "";
// The ":path" pseudo-header field includes the path and query parts
// of the target URI. [...] This pseudo-header field MUST NOT be empty
// for "http" or "https" URIs; "http" or "https" URIs that do not contain
// a path component MUST include a value of '/'.
if (!path && (scheme === "http" || scheme === "https"))
result = "/";
if (queryString)
result += "?" + queryString;
return result;
};