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fenix/app/src/main/java/org/mozilla/fenix/AppRequestInterceptor.kt

121 lines
4.3 KiB
Kotlin

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