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/*
* Copyright (C) 2022 - 2023 MURENA SAS
* Copyright (C) 2021 E FOUNDATION
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package foundation.e.advancedprivacy.externalinterfaces.permissions
import android.app.AppOpsManager
import android.content.Context
import android.content.pm.ApplicationInfo
import android.content.pm.PackageManager
import android.content.pm.PermissionInfo
import android.content.pm.PermissionInfo.PROTECTION_DANGEROUS
import android.graphics.drawable.Drawable
import android.os.Build
import android.util.Log
import foundation.e.advancedprivacy.domain.entities.AppOpModes
import foundation.e.advancedprivacy.domain.entities.ApplicationDescription
import foundation.e.advancedprivacy.domain.entities.PermissionDescription
import foundation.e.advancedprivacy.domain.entities.ProfileType
/**
* Implementation of the commons functionality between privileged and standard
* versions of the module.
* @param context an Android context, to retrieve packageManager for example.
*/
abstract class PermissionsPrivacyModuleBase(protected val context: Context) : IPermissionsPrivacyModule {
companion object {
private const val TAG = "PermissionsModule"
}
/**
* @see IPermissionsPrivacyModule.getInstalledApplications
*/
override fun getApplicationDescription(packageName: String, withIcon: Boolean): ApplicationDescription {
val appDesc = buildApplicationDescription(context.packageManager.getApplicationInfo(packageName, 0))
if (withIcon) {
appDesc.icon = getApplicationIcon(appDesc.packageName)
}
return appDesc
}
/**
* * @see IPermissionsPrivacyModule.getPermissions
*/
override fun getPermissions(packageName: String): List<String> {
val packageInfo = context.packageManager.getPackageInfo(packageName, PackageManager.GET_PERMISSIONS)
return packageInfo.requestedPermissions?.asList() ?: emptyList()
}
override fun getPermissionDescription(permissionName: String): PermissionDescription {
val info = context.packageManager.getPermissionInfo(permissionName, 0)
return PermissionDescription(
name = permissionName,
isDangerous = isPermissionsDangerous(info),
group = null,
label = info.loadLabel(context.packageManager),
description = info.loadDescription(context.packageManager)
)
}
/**
* @see IPermissionsPrivacyModule.isDangerousPermissionGranted
*/
override fun isDangerousPermissionGranted(packageName: String, permissionName: String): Boolean {
return context.packageManager
.checkPermission(permissionName, packageName) == PackageManager.PERMISSION_GRANTED
}
// on google version, work only for the current package.
@Suppress("DEPRECATION")
override fun getAppOpMode(
appDesc: ApplicationDescription,
appOpPermissionName: String
): AppOpModes {
val appOps = context.getSystemService(Context.APP_OPS_SERVICE) as AppOpsManager
val mode = if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
appOps.checkOpNoThrow(
appOpPermissionName,
appDesc.uid, appDesc.packageName
)
} else {
appOps.unsafeCheckOpNoThrow(
appOpPermissionName,
appDesc.uid, appDesc.packageName
)
}
return AppOpModes.getByModeValue(mode)
}
override fun isPermissionsDangerous(permissionName: String): Boolean {
try {
val permissionInfo = context.packageManager.getPermissionInfo(permissionName, 0)
return isPermissionsDangerous(permissionInfo)
} catch (e: Exception) {
Log.w(TAG, "exception in isPermissionsDangerous(String)", e)
return false
}
}
@Suppress("DEPRECATION")
private fun isPermissionsDangerous(permissionInfo: PermissionInfo): Boolean {
try {
return if (Build.VERSION.SDK_INT < Build.VERSION_CODES.P) {
permissionInfo.protectionLevel and PROTECTION_DANGEROUS == 1
} else {
permissionInfo.protection == PROTECTION_DANGEROUS
}
} catch (e: Exception) {
Log.w(TAG, "exception in isPermissionsDangerous(PermissionInfo)", e)
return false
}
}
override fun buildApplicationDescription(
appInfo: ApplicationInfo,
profileId: Int,
profileType: ProfileType
):
ApplicationDescription {
return ApplicationDescription(
packageName = appInfo.packageName,
uid = appInfo.uid,
label = getAppLabel(appInfo),
icon = null,
profileId = profileId,
profileType = profileType,
)
}
private fun getAppLabel(appInfo: ApplicationInfo): CharSequence {
return context.packageManager.getApplicationLabel(appInfo)
}
fun getApplicationIcon(appInfo: ApplicationInfo): Drawable? {
return context.packageManager.getApplicationIcon(appInfo)
}
override fun getApplicationIcon(packageName: String): Drawable? {
return context.packageManager.getApplicationIcon(packageName)
}
}
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