118 lines
3.6 KiB
Swift
118 lines
3.6 KiB
Swift
//
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// Copyright 2023 New Vector Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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import Foundation
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enum AppRoute: Equatable {
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case oidcCallback(url: URL)
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case roomList
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case room(roomID: String)
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case roomDetails(roomID: String)
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case invites
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case genericCallLink(url: URL)
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}
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struct AppRouteURLParser {
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let urlParsers: [URLParser]
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init(appSettings: AppSettings) {
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urlParsers = [
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ElementAppURLParser(appSettings: appSettings),
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ElementCallURLParser()
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]
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}
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func route(from url: URL) -> AppRoute? {
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for parser in urlParsers {
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if let appRoute = parser.route(from: url) {
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return appRoute
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}
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}
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return nil
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}
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}
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/// Represents a type that can parse a `URL` into an `AppRoute`.
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///
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/// The following Universal Links are missing parsers.
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/// - app.element.io
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/// - mobile.element.io
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protocol URLParser {
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func route(from url: URL) -> AppRoute?
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}
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/// The parser for the main Element website.
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struct ElementAppURLParser: URLParser {
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private let knownHosts = ["app.element.io", "staging.element.io", "develop.element.io"]
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let appSettings: AppSettings
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func route(from url: URL) -> AppRoute? {
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guard let host = url.host, knownHosts.contains(host) else {
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return nil
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}
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let pathComponents = url.pathComponents
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// OIDC callback URL.
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if pathComponents.count == 3, pathComponents[0] == "mobile", pathComponents[1] == "oidc" {
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return .oidcCallback(url: url)
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}
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return nil
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}
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}
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/// The parser for Element Call links. This always returns a `.genericCallLink`
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struct ElementCallURLParser: URLParser {
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private let knownHosts = ["call.element.io"]
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private let customSchemeURLQueryParameterName = "url"
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func route(from url: URL) -> AppRoute? {
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// Element Call not supported, WebRTC not available
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// https://github.com/vector-im/element-x-ios/issues/1794
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if ProcessInfo.processInfo.isiOSAppOnMac {
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return nil
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}
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// First try processing URLs with custom schemes
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if let scheme = url.scheme,
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scheme == InfoPlistReader.app.elementCallScheme {
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guard let components = URLComponents(url: url, resolvingAgainstBaseURL: false) else {
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return nil
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}
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guard let encodedURLString = components.queryItems?.first(where: { $0.name == customSchemeURLQueryParameterName })?.value,
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let callURL = URL(string: encodedURLString),
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callURL.scheme == "https" // Don't allow URLs from potentially unsafe domains
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else {
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MXLog.error("Invalid custom scheme call parameters: \(url)")
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return nil
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}
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return .genericCallLink(url: callURL)
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}
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// Otherwise try to interpret it as an universal link
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guard let host = url.host, knownHosts.contains(host) else {
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return nil
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}
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return .genericCallLink(url: url)
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}
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}
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