Create module for malicious sites protection (#5317)

Task/Issue URL: https://app.asana.com/0/0/1207943168535186/f 

### Description

### Steps to test this PR

_Feature 1_
- [ ]
- [ ]

### UI changes
| Before  | After |
| ------ | ----- |
!(Upload before screenshot)|(Upload after screenshot)|

app/build.gradle

@@ -215,6 +215,8 @@ fladle {
 }
 
 dependencies {
+	implementation project(":malicious-site-protection-impl")
+	implementation project(":malicious-site-protection-api")
 	implementation project(":custom-tabs-impl")
 	implementation project(":custom-tabs-api")
 	implementation project(":duckplayer-impl")

malicious-site-protection/malicious-site-protection-api/build.gradle

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2021 DuckDuckGo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+plugins {
+    id 'com.android.library'
+    id 'kotlin-android'
+}
+
+apply from: "$rootProject.projectDir/gradle/android-library.gradle"
+
+android {
+    namespace 'com.duckduckgo.malicioussiteprotection.api'
+}
+
+dependencies {
+    implementation Kotlin.stdlib.jdk7
+}

malicious-site-protection/malicious-site-protection-api/src/main/kotlin/com/duckduckgo/malicioussiteprotection/api/MaliciousSiteProtection.kt

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2024 DuckDuckGo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.duckduckgo.malicioussiteprotection.api
+
+interface MaliciousSiteProtection

malicious-site-protection/malicious-site-protection-impl/build.gradle

@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2021 DuckDuckGo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+plugins {
+    id 'com.android.library'
+    id 'kotlin-android'
+    id 'com.squareup.anvil'
+    id 'com.google.devtools.ksp'
+}
+
+apply from: "$rootProject.projectDir/gradle/android-library.gradle"
+
+dependencies {
+	implementation project(":malicious-site-protection-api")
+
+    anvil project(path: ':anvil-compiler')
+    implementation project(path: ':anvil-annotations')
+    implementation project(path: ':di')
+    ksp AndroidX.room.compiler
+
+    implementation KotlinX.coroutines.android
+    implementation AndroidX.core.ktx
+    implementation Google.dagger
+
+    implementation project(path: ':common-utils')
+
+    implementation "com.squareup.logcat:logcat:_"
+    implementation JakeWharton.timber
+
+    implementation Google.android.material
+
+    testImplementation Testing.junit4
+    testImplementation "org.mockito.kotlin:mockito-kotlin:_"
+    testImplementation project(path: ':common-test')
+    testImplementation CashApp.turbine
+    testImplementation Testing.robolectric
+    testImplementation(KotlinX.coroutines.test) {
+        // https://github.com/Kotlin/kotlinx.coroutines/issues/2023
+        // conflicts with mockito due to direct inclusion of byte buddy
+        exclude group: "org.jetbrains.kotlinx", module: "kotlinx-coroutines-debug"
+    }
+
+    coreLibraryDesugaring Android.tools.desugarJdkLibs
+}
+
+android {
+    namespace "com.duckduckgo.malicioussiteprotection.impl"
+    anvil {
+        generateDaggerFactories = true // default is false
+    }
+    lint {
+        baseline file("lint-baseline.xml")
+    }
+    testOptions {
+        unitTests {
+            includeAndroidResources = true
+        }
+    }
+    compileOptions {
+        coreLibraryDesugaringEnabled = true
+    }
+}
+

malicious-site-protection/malicious-site-protection-impl/lint-baseline.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<issues format="6" by="lint 8.5.1" type="baseline" client="gradle" dependencies="false" name="AGP (8.5.1)" variant="all" version="8.5.1">
+
+</issues>

malicious-site-protection/malicious-site-protection-impl/src/main/kotlin/com/duckduckgo/malicioussiteprotection/impl/MaliciousSiteProtectionFeature.kt

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2024 DuckDuckGo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.duckduckgo.malicioussiteprotection.impl
+
+import com.duckduckgo.anvil.annotations.ContributesRemoteFeature
+import com.duckduckgo.di.scopes.AppScope
+import com.duckduckgo.feature.toggles.api.Toggle
+
+@ContributesRemoteFeature(
+    scope = AppScope::class,
+    featureName = "maliciousSiteProtection",
+)
+/**
+ * This is the class that represents the maliciousSiteProtection feature flags
+ */
+interface MaliciousSiteProtectionFeature {
+    /**
+     * @return `true` when the remote config has the global "maliciousSiteProtection" feature flag enabled
+     * If the remote feature is not present defaults to `false`
+     */
+    @Toggle.InternalAlwaysEnabled
+    @Toggle.DefaultValue(false)
+    fun self(): Toggle
+}

malicious-site-protection/malicious-site-protection-impl/src/main/kotlin/com/duckduckgo/malicioussiteprotection/impl/RealMaliciousSiteProtection.kt

@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2024 DuckDuckGo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.duckduckgo.malicioussiteprotection.impl
+
+import com.duckduckgo.app.di.AppCoroutineScope
+import com.duckduckgo.app.di.IsMainProcess
+import com.duckduckgo.common.utils.DispatcherProvider
+import com.duckduckgo.di.scopes.AppScope
+import com.duckduckgo.malicioussiteprotection.api.MaliciousSiteProtection
+import com.duckduckgo.privacy.config.api.PrivacyConfigCallbackPlugin
+import com.squareup.anvil.annotations.ContributesBinding
+import javax.inject.Inject
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.launch
+import org.json.JSONObject
+
+@ContributesBinding(AppScope::class, MaliciousSiteProtection::class)
+@ContributesBinding(AppScope::class, PrivacyConfigCallbackPlugin::class)
+class RealMaliciousSiteProtection @Inject constructor(
+    private val dispatchers: DispatcherProvider,
+    private val maliciousSiteProtectionFeature: MaliciousSiteProtectionFeature,
+    @IsMainProcess private val isMainProcess: Boolean,
+    @AppCoroutineScope private val appCoroutineScope: CoroutineScope,
+) : MaliciousSiteProtection, PrivacyConfigCallbackPlugin {
+
+    private var isFeatureEnabled = false
+    private var hashPrefixUpdateFrequency = 20L
+    private var filterSetUpdateFrequency = 720L
+
+    init {
+        if (isMainProcess) {
+            loadToMemory()
+        }
+    }
+
+    override fun onPrivacyConfigDownloaded() {
+        loadToMemory()
+    }
+
+    private fun loadToMemory() {
+        appCoroutineScope.launch(dispatchers.io()) {
+            isFeatureEnabled = maliciousSiteProtectionFeature.self().isEnabled()
+            maliciousSiteProtectionFeature.self().getSettings()?.let {
+                JSONObject(it).let { settings ->
+                    hashPrefixUpdateFrequency = settings.getLong("hashPrefixUpdateFrequency")
+                    filterSetUpdateFrequency = settings.getLong("filterSetUpdateFrequency")
+                }
+            }
+        }
+    }
+}

malicious-site-protection/readme.md

@@ -0,0 +1,9 @@
+# Feature Name
+
+In-browser feature to detect phishing and malware sites.
+
+## Who can help you better understand this feature?
+- ❓ Cris Barreiro
+
+## More information
+- [Asana: feature documentation](https://app.asana.com/0/1208717418466383/1199621914667995/f)