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Verify caller before uninstallation

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This commit is contained in:
topjohnwu 2022-06-05 07:03:26 -07:00
parent aadb2d825c
commit fa60daf9b5
4 changed files with 16 additions and 11 deletions
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12
app/src/main/java/com/topjohnwu/magisk/arch/BaseMainActivity.kt
View File

@ -9,6 +9,7 @@ import androidx.databinding.ViewDataBinding
import androidx.lifecycle.lifecycleScope
import com.topjohnwu.magisk.BuildConfig.APPLICATION_ID
import com.topjohnwu.magisk.R
import com.topjohnwu.magisk.StubApk
import com.topjohnwu.magisk.core.Config
import com.topjohnwu.magisk.core.Const
import com.topjohnwu.magisk.core.JobService
@ -95,10 +96,19 @@ abstract class BaseMainActivity<Binding : ViewDataBinding> : NavigationActivity<
}
private fun preLoad() {
val prevPkg = intent.getStringExtra(Const.Key.PREV_PKG)
val prevPkg = intent.getStringExtra(Const.Key.PREV_PKG)?.let {
// Make sure the calling package matches (prevent DoS)
if (it == callingPackage)
it
else
null
}
Config.load(prevPkg)
handleRepackage(prevPkg)
if (prevPkg != null) {
StubApk.restartProcess(this)
}
Notifications.setup(this)
JobService.schedule(this)
Shortcuts.setupDynamic(this)

2
app/src/main/java/com/topjohnwu/magisk/core/Config.kt
View File

@ -163,7 +163,7 @@ object Config : PreferenceConfig, DBConfig {
fun load(pkg: String?) {
// Only try to load prefs when fresh install and a previous package name is set
if (pkg != null && prefs.all.isEmpty()) runCatching {
context.contentResolver.openInputStream(Provider.PREFS_URI(pkg))?.use {
context.contentResolver.openInputStream(Provider.preferencesUri(pkg))?.use {
prefs.edit { parsePrefs(it) }
}
}

7
app/src/main/java/com/topjohnwu/magisk/core/Provider.kt
View File

@ -6,7 +6,6 @@ import android.os.ParcelFileDescriptor
import android.os.ParcelFileDescriptor.MODE_READ_ONLY
import com.topjohnwu.magisk.core.base.BaseProvider
import com.topjohnwu.magisk.core.su.SuCallbackHandler
import java.io.File
class Provider : BaseProvider() {
@ -17,17 +16,13 @@ class Provider : BaseProvider() {
override fun openFile(uri: Uri, mode: String): ParcelFileDescriptor? {
return when (uri.encodedPath ?: return null) {
"/apk_file" -> ParcelFileDescriptor.open(File(context!!.packageCodePath), MODE_READ_ONLY)
"/prefs_file" -> ParcelFileDescriptor.open(Config.prefsFile, MODE_READ_ONLY)
else -> super.openFile(uri, mode)
}
}
companion object {
fun APK_URI(pkg: String) =
Uri.Builder().scheme("content").authority("$pkg.provider").path("apk_file").build()
fun PREFS_URI(pkg: String) =
fun preferencesUri(pkg: String): Uri =
Uri.Builder().scheme("content").authority("$pkg.provider").path("prefs_file").build()
}
}

6
app/src/main/java/com/topjohnwu/magisk/core/tasks/HideAPK.kt
View File

@ -97,10 +97,10 @@ object HideAPK {
Config.suManager = if (pkg == APPLICATION_ID) "" else pkg
val self = activity.packageName
val flag = Intent.FLAG_GRANT_READ_URI_PERMISSION
activity.grantUriPermission(pkg, Provider.APK_URI(self), flag)
activity.grantUriPermission(pkg, Provider.PREFS_URI(self), flag)
activity.grantUriPermission(pkg, Provider.preferencesUri(self), flag)
intent.putExtra(Const.Key.PREV_PKG, self)
activity.startActivity(intent)
intent.flags = 0
activity.startActivityForResult(intent, Int.MAX_VALUE)
activity.finish()
}