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95 lines
3.2 KiB
Kotlin
95 lines
3.2 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.components
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import androidx.annotation.VisibleForTesting
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import mozilla.components.concept.engine.EngineSession
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import mozilla.components.concept.engine.EngineSession.LoadUrlFlags
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import mozilla.components.concept.engine.EngineSession.LoadUrlFlags.Companion.ALLOW_ADDITIONAL_HEADERS
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import mozilla.components.concept.engine.EngineSession.LoadUrlFlags.Companion.BYPASS_CACHE
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import mozilla.components.concept.engine.EngineSession.LoadUrlFlags.Companion.LOAD_FLAGS_BYPASS_LOAD_URI_DELEGATE
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import mozilla.components.concept.engine.request.RequestInterceptor
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import java.net.MalformedURLException
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import java.net.URL
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/**
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* [RequestInterceptor] implementation for intercepting URL load requests to allow custom
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* behaviour.
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*
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* @param isDeviceRamAboveThreshold Whether or not the device ram is above a threshold.
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*/
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class UrlRequestInterceptor(private val isDeviceRamAboveThreshold: Boolean) : RequestInterceptor {
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private val isGoogleRequest by lazy {
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Regex("^https://www\\.google\\..+")
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}
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private val googleRequestPaths = setOf("/search", "/webhp", "/preferences")
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@VisibleForTesting
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internal fun getAdditionalHeaders(isDeviceRamAboveThreshold: Boolean): Map<String, String> {
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val value = if (isDeviceRamAboveThreshold) {
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"1"
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} else {
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"0"
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}
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return mapOf(
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"X-Search-Subdivision" to value,
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)
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}
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@VisibleForTesting
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internal fun shouldInterceptRequest(
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uri: String,
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isSubframeRequest: Boolean,
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): Boolean {
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if (isSubframeRequest || !isGoogleRequest.containsMatchIn(uri)) {
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return false
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}
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return try {
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googleRequestPaths.contains(URL(uri).path)
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} catch (e: MalformedURLException) {
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false
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}
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}
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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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if (!shouldInterceptRequest(uri = uri, isSubframeRequest = isSubframeRequest)) {
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return null
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}
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// This is a workaround for https://bugzilla.mozilla.org/show_bug.cgi?id=1875668
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// Remove this by implementing https://bugzilla.mozilla.org/show_bug.cgi?id=1883496
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val loadUrlFlags = if (uri.endsWith("#ip=1", true)) {
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LoadUrlFlags.select(
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LOAD_FLAGS_BYPASS_LOAD_URI_DELEGATE,
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ALLOW_ADDITIONAL_HEADERS,
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BYPASS_CACHE,
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)
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} else {
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LoadUrlFlags.select(
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LOAD_FLAGS_BYPASS_LOAD_URI_DELEGATE,
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ALLOW_ADDITIONAL_HEADERS,
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)
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}
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return RequestInterceptor.InterceptionResponse.Url(
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url = uri,
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flags = loadUrlFlags,
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additionalHeaders = getAdditionalHeaders(isDeviceRamAboveThreshold),
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)
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}
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}
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