1 files changed, 160 insertions, 0 deletions
diff --git a/core/src/main/java/foundation/e/advancedprivacy/externalinterfaces/permissions/PermissionsPrivacyModuleBase.kt b/core/src/main/java/foundation/e/advancedprivacy/externalinterfaces/permissions/PermissionsPrivacyModuleBase.kt
new file mode 100644
index 0000000..27ba17f
--- /dev/null
+++ b/core/src/main/java/foundation/e/advancedprivacy/externalinterfaces/permissions/PermissionsPrivacyModuleBase.kt
@@ -0,0 +1,160 @@
+/*
+ * 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)
+    }
+}