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Allow permanently trusting unofficial extensions by version code + signature

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Closes #10290
This commit is contained in:
arkon 2024-01-07 13:35:44 -05:00
parent 14510f1d26
commit 6510a9617a
9 changed files with 60 additions and 35 deletions
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2
app/build.gradle.kts
View File

@ -22,7 +22,7 @@ android {
defaultConfig {
applicationId = "eu.kanade.tachiyomi"
versionCode = 116
versionCode = 117
versionName = "0.15.1"
buildConfigField("String", "COMMIT_COUNT", "\"${getCommitCount()}\"")

2
app/src/main/java/eu/kanade/domain/DomainModule.kt
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@ -21,6 +21,7 @@ import eu.kanade.domain.source.interactor.SetMigrateSorting
import eu.kanade.domain.source.interactor.ToggleLanguage
import eu.kanade.domain.source.interactor.ToggleSource
import eu.kanade.domain.source.interactor.ToggleSourcePin
import eu.kanade.domain.source.interactor.TrustExtension
import eu.kanade.domain.track.interactor.AddTracks
import eu.kanade.domain.track.interactor.RefreshTracks
import eu.kanade.domain.track.interactor.SyncChapterProgressWithTrack
@ -170,6 +171,7 @@ class DomainModule : InjektModule {
addFactory { ToggleLanguage(get()) }
addFactory { ToggleSource(get()) }
addFactory { ToggleSourcePin(get()) }
addFactory { TrustExtension(get()) }
addFactory { CreateSourceRepo(get()) }
addFactory { DeleteSourceRepo(get()) }

27
app/src/main/java/eu/kanade/domain/source/interactor/TrustExtension.kt Normal file
View File

@ -0,0 +1,27 @@
package eu.kanade.domain.source.interactor
import android.content.pm.PackageInfo
import androidx.core.content.pm.PackageInfoCompat
import eu.kanade.domain.source.service.SourcePreferences
import tachiyomi.core.preference.getAndSet
class TrustExtension(
private val preferences: SourcePreferences,
) {
fun isTrusted(pkgInfo: PackageInfo, signatureHash: String): Boolean {
val key = "${pkgInfo.packageName}:${PackageInfoCompat.getLongVersionCode(pkgInfo)}:$signatureHash"
return key in preferences.trustedExtensions().get()
}
fun trust(pkgName: String, versionCode: Long, signatureHash: String) {
preferences.trustedExtensions().getAndSet { exts ->
// Remove previously trusted versions
val removed = exts.filter { it.startsWith("$pkgName:") }.toMutableSet()
removed.also {
it += "$pkgName:$versionCode:$signatureHash"
}
}
}
}

9
app/src/main/java/eu/kanade/domain/source/service/SourcePreferences.kt
View File

@ -38,11 +38,14 @@ class SourcePreferences(
SetMigrateSorting.Direction.ASCENDING,
)
fun hideInLibraryItems() = preferenceStore.getBoolean("browse_hide_in_library_items", false)
fun extensionRepos() = preferenceStore.getStringSet("extension_repos", emptySet())
fun extensionUpdatesCount() = preferenceStore.getInt("ext_updates_count", 0)
fun trustedSignatures() = preferenceStore.getStringSet(Preference.appStateKey("trusted_signatures"), emptySet())
fun hideInLibraryItems() = preferenceStore.getBoolean("browse_hide_in_library_items", false)
fun trustedExtensions() = preferenceStore.getStringSet(
Preference.appStateKey("trusted_extensions"),
emptySet(),
)
}

5
app/src/main/java/eu/kanade/tachiyomi/Migrations.kt
View File

@ -410,6 +410,11 @@ object Migrations {
newKey = { Preference.privateKey(it) },
)
}
if (oldVersion < 117) {
prefs.edit {
remove(Preference.appStateKey("trusted_signatures"))
}
}
return true
}

23
app/src/main/java/eu/kanade/tachiyomi/extension/ExtensionManager.kt
View File

@ -2,6 +2,7 @@ package eu.kanade.tachiyomi.extension
import android.content.Context
import android.graphics.drawable.Drawable
import eu.kanade.domain.source.interactor.TrustExtension
import eu.kanade.domain.source.service.SourcePreferences
import eu.kanade.tachiyomi.extension.api.ExtensionApi
import eu.kanade.tachiyomi.extension.api.ExtensionUpdateNotifier
@ -18,7 +19,6 @@ import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.asStateFlow
import kotlinx.coroutines.flow.emptyFlow
import logcat.LogPriority
import tachiyomi.core.preference.plusAssign
import tachiyomi.core.util.lang.launchNow
import tachiyomi.core.util.lang.withUIContext
import tachiyomi.core.util.system.logcat
@ -34,13 +34,11 @@ import java.util.Locale
* To avoid malicious distribution, every extension must be signed and it will only be loaded if its
* signature is trusted, otherwise the user will be prompted with a warning to trust it before being
* loaded.
*
* @param context The application context.
* @param preferences The application preferences.
*/
class ExtensionManager(
private val context: Context,
private val preferences: SourcePreferences = Injekt.get(),
private val trustExtension: TrustExtension = Injekt.get(),
) {
var isInitialized = false
@ -249,18 +247,19 @@ class ExtensionManager(
}
/**
* Adds the given signature to the list of trusted signatures. It also loads in background the
* extensions that match this signature.
* Adds the given extension to the list of trusted extensions. It also loads in background the
* now trusted extensions.
*
* @param signature The signature to whitelist.
* @param extension the extension to trust
*/
fun trustSignature(signature: String) {
val untrustedSignatures = _untrustedExtensionsFlow.value.map { it.signatureHash }.toSet()
if (signature !in untrustedSignatures) return
fun trust(extension: Extension.Untrusted) {
val untrustedPkgNames = _untrustedExtensionsFlow.value.map { it.pkgName }.toSet()
if (extension.pkgName !in untrustedPkgNames) return
preferences.trustedSignatures() += signature
trustExtension.trust(extension.pkgName, extension.versionCode, extension.signatureHash)
val nowTrustedExtensions = _untrustedExtensionsFlow.value.filter { it.signatureHash == signature }
val nowTrustedExtensions = _untrustedExtensionsFlow.value
.filter { it.pkgName == extension.pkgName && it.versionCode == extension.versionCode }
_untrustedExtensionsFlow.value -= nowTrustedExtensions
launchNow {

21
app/src/main/java/eu/kanade/tachiyomi/extension/util/ExtensionLoader.kt
View File

@ -7,6 +7,7 @@ import android.content.pm.PackageManager
import android.os.Build
import androidx.core.content.pm.PackageInfoCompat
import dalvik.system.PathClassLoader
import eu.kanade.domain.source.interactor.TrustExtension
import eu.kanade.domain.source.service.SourcePreferences
import eu.kanade.tachiyomi.extension.model.Extension
import eu.kanade.tachiyomi.extension.model.LoadResult
@ -15,7 +16,6 @@ import eu.kanade.tachiyomi.source.Source
import eu.kanade.tachiyomi.source.SourceFactory
import eu.kanade.tachiyomi.util.lang.Hash
import eu.kanade.tachiyomi.util.storage.copyAndSetReadOnlyTo
import eu.kanade.tachiyomi.util.system.isDevFlavor
import kotlinx.coroutines.async
import kotlinx.coroutines.awaitAll
import kotlinx.coroutines.runBlocking
@ -41,6 +41,7 @@ import java.io.File
internal object ExtensionLoader {
private val preferences: SourcePreferences by injectLazy()
private val trustExtension: TrustExtension by injectLazy()
private val loadNsfwSource by lazy {
preferences.showNsfwSource().get()
}
@ -49,8 +50,6 @@ internal object ExtensionLoader {
private const val METADATA_SOURCE_CLASS = "tachiyomi.extension.class"
private const val METADATA_SOURCE_FACTORY = "tachiyomi.extension.factory"
private const val METADATA_NSFW = "tachiyomi.extension.nsfw"
private const val METADATA_HAS_README = "tachiyomi.extension.hasReadme"
private const val METADATA_HAS_CHANGELOG = "tachiyomi.extension.hasChangelog"
const val LIB_VERSION_MIN = 1.4
const val LIB_VERSION_MAX = 1.5
@ -119,12 +118,6 @@ internal object ExtensionLoader {
* @param context The application context.
*/
fun loadExtensions(context: Context): List<LoadResult> {
// Always make users trust unknown extensions on cold starts in non-dev builds
// due to inherent security risks
if (!isDevFlavor) {
preferences.trustedSignatures().delete()
}
val pkgManager = context.packageManager
val installedPkgs = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
@ -262,7 +255,7 @@ internal object ExtensionLoader {
if (signatures.isNullOrEmpty()) {
logcat(LogPriority.WARN) { "Package $pkgName isn't signed" }
return LoadResult.Error
} else if (!hasTrustedSignature(signatures)) {
} else if (!isTrusted(pkgInfo, signatures)) {
val extension = Extension.Untrusted(
extName,
pkgName,
@ -281,9 +274,6 @@ internal object ExtensionLoader {
return LoadResult.Error
}
val hasReadme = appInfo.metaData.getInt(METADATA_HAS_README, 0) == 1
val hasChangelog = appInfo.metaData.getInt(METADATA_HAS_CHANGELOG, 0) == 1
val classLoader = try {
PathClassLoader(appInfo.sourceDir, null, context.classLoader)
} catch (e: Exception) {
@ -393,13 +383,12 @@ internal object ExtensionLoader {
?.toList()
}
private fun hasTrustedSignature(signatures: List<String>): Boolean {
private fun isTrusted(pkgInfo: PackageInfo, signatures: List<String>): Boolean {
if (officialSignature in signatures) {
return true
}
val trustedSignatures = preferences.trustedSignatures().get()
return trustedSignatures.any { signatures.contains(it) }
return trustExtension.isTrusted(pkgInfo, signatures.last())
}
private fun isOfficiallySigned(signatures: List<String>): Boolean {

4
app/src/main/java/eu/kanade/tachiyomi/ui/browse/extension/ExtensionsScreenModel.kt
View File

@ -195,8 +195,8 @@ class ExtensionsScreenModel(
}
}
fun trustSignature(signatureHash: String) {
extensionManager.trustSignature(signatureHash)
fun trustExtension(extension: Extension.Untrusted) {
extensionManager.trust(extension)
}
@Immutable

2
app/src/main/java/eu/kanade/tachiyomi/ui/browse/extension/ExtensionsTab.kt
View File

@ -61,7 +61,7 @@ fun extensionsTab(
},
onInstallExtension = extensionsScreenModel::installExtension,
onOpenExtension = { navigator.push(ExtensionDetailsScreen(it.pkgName)) },
onTrustExtension = { extensionsScreenModel.trustSignature(it.signatureHash) },
onTrustExtension = { extensionsScreenModel.trustExtension(it) },
onUninstallExtension = { extensionsScreenModel.uninstallExtension(it) },
onUpdateExtension = extensionsScreenModel::updateExtension,
onRefresh = extensionsScreenModel::findAvailableExtensions,