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121 lines
4.3 KiB
Kotlin
121 lines
4.3 KiB
Kotlin
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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package org.mozilla.fenix
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import android.content.Context
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import android.net.ConnectivityManager
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import androidx.core.content.getSystemService
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import mozilla.components.browser.errorpages.ErrorPages
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import mozilla.components.browser.errorpages.ErrorType
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import mozilla.components.concept.engine.EngineSession
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import mozilla.components.concept.engine.request.RequestInterceptor
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import org.mozilla.fenix.components.metrics.Event
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import org.mozilla.fenix.ext.components
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import org.mozilla.fenix.ext.isOnline
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class AppRequestInterceptor(private val context: Context) : RequestInterceptor {
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override fun onLoadRequest(
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engineSession: EngineSession,
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uri: String,
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lastUri: String?,
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hasUserGesture: Boolean,
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isSameDomain: Boolean,
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isRedirect: Boolean,
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isDirectNavigation: Boolean,
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isSubframeRequest: Boolean
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): RequestInterceptor.InterceptionResponse? {
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return context.components.services.appLinksInterceptor
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.onLoadRequest(
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engineSession,
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uri,
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lastUri,
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hasUserGesture,
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isSameDomain,
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isRedirect,
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isDirectNavigation,
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isSubframeRequest
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)
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}
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override fun onErrorRequest(
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session: EngineSession,
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errorType: ErrorType,
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uri: String?
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): RequestInterceptor.ErrorResponse? {
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val improvedErrorType = improveErrorType(errorType)
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val riskLevel = getRiskLevel(improvedErrorType)
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context.components.analytics.metrics.track(Event.ErrorPageVisited(improvedErrorType))
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val errorPageUri = ErrorPages.createUrlEncodedErrorPage(
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context = context,
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errorType = improvedErrorType,
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uri = uri,
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htmlResource = riskLevel.htmlRes
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)
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return RequestInterceptor.ErrorResponse.Uri(errorPageUri)
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}
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/**
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* Where possible, this will make the error type more accurate by including information not
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* available to AC.
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*/
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private fun improveErrorType(errorType: ErrorType): ErrorType {
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// This is not an ideal solution. For context, see:
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// https://github.com/mozilla-mobile/android-components/pull/5068#issuecomment-558415367
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val isConnected: Boolean = context.getSystemService<ConnectivityManager>()!!.isOnline()
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return when {
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errorType == ErrorType.ERROR_UNKNOWN_HOST && !isConnected -> ErrorType.ERROR_NO_INTERNET
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else -> errorType
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}
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}
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private fun getRiskLevel(errorType: ErrorType): RiskLevel = when (errorType) {
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ErrorType.UNKNOWN,
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ErrorType.ERROR_NET_INTERRUPT,
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ErrorType.ERROR_NET_TIMEOUT,
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ErrorType.ERROR_CONNECTION_REFUSED,
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ErrorType.ERROR_UNKNOWN_SOCKET_TYPE,
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ErrorType.ERROR_REDIRECT_LOOP,
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ErrorType.ERROR_OFFLINE,
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ErrorType.ERROR_NET_RESET,
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ErrorType.ERROR_UNSAFE_CONTENT_TYPE,
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ErrorType.ERROR_CORRUPTED_CONTENT,
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ErrorType.ERROR_CONTENT_CRASHED,
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ErrorType.ERROR_INVALID_CONTENT_ENCODING,
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ErrorType.ERROR_UNKNOWN_HOST,
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ErrorType.ERROR_MALFORMED_URI,
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ErrorType.ERROR_FILE_NOT_FOUND,
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ErrorType.ERROR_FILE_ACCESS_DENIED,
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ErrorType.ERROR_PROXY_CONNECTION_REFUSED,
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ErrorType.ERROR_UNKNOWN_PROXY_HOST,
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ErrorType.ERROR_NO_INTERNET,
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ErrorType.ERROR_UNKNOWN_PROTOCOL -> RiskLevel.Low
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ErrorType.ERROR_SECURITY_BAD_CERT,
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ErrorType.ERROR_SECURITY_SSL,
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ErrorType.ERROR_PORT_BLOCKED -> RiskLevel.Medium
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ErrorType.ERROR_SAFEBROWSING_HARMFUL_URI,
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ErrorType.ERROR_SAFEBROWSING_MALWARE_URI,
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ErrorType.ERROR_SAFEBROWSING_PHISHING_URI,
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ErrorType.ERROR_SAFEBROWSING_UNWANTED_URI -> RiskLevel.High
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}
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internal enum class RiskLevel(val htmlRes: String) {
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Low(LOW_AND_MEDIUM_RISK_ERROR_PAGES),
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Medium(LOW_AND_MEDIUM_RISK_ERROR_PAGES),
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High(HIGH_RISK_ERROR_PAGES),
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}
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companion object {
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internal const val LOW_AND_MEDIUM_RISK_ERROR_PAGES = "low_and_medium_risk_error_pages.html"
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internal const val HIGH_RISK_ERROR_PAGES = "high_risk_error_pages.html"
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}
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}
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