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2952/proxy (#2961)

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* replace hard-coded strings with existing constants

* proxy port

* * custom proxy port and hostname inputs
* typesafety, refactor, linting, unit tests

* relocate ProxyConfiguration in app structure

* remove unused editTextPreference fn

* allow preference category to have no title

* refactor proxy prefs hierarchy/dependency
This commit is contained in:
kylegoetz 2022-12-07 12:29:18 -06:00 committed by GitHub
parent 59c24381a3
commit 25443217c2
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GPG key ID: 4AEE18F83AFDEB23
6 changed files with 143 additions and 21 deletions
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37
app/src/main/java/com/keylesspalace/tusky/components/preference/ProxyPreferencesFragment.kt
View file

@ -19,9 +19,11 @@ import android.os.Bundle
import androidx.preference.PreferenceFragmentCompat
import com.keylesspalace.tusky.R
import com.keylesspalace.tusky.settings.PrefKeys
import com.keylesspalace.tusky.settings.editTextPreference
import com.keylesspalace.tusky.settings.ProxyConfiguration
import com.keylesspalace.tusky.settings.makePreferenceScreen
import com.keylesspalace.tusky.settings.preferenceCategory
import com.keylesspalace.tusky.settings.switchPreference
import com.keylesspalace.tusky.settings.validatedEditTextPreference
import kotlin.system.exitProcess
class ProxyPreferencesFragment : PreferenceFragmentCompat() {
@ -36,18 +38,29 @@ class ProxyPreferencesFragment : PreferenceFragmentCompat() {
setDefaultValue(false)
}
editTextPreference {
setTitle(R.string.pref_title_http_proxy_server)
key = PrefKeys.HTTP_PROXY_SERVER
isIconSpaceReserved = false
setSummaryProvider { text }
}
preferenceCategory { category ->
category.dependency = PrefKeys.HTTP_PROXY_ENABLED
category.isIconSpaceReserved = false
editTextPreference {
setTitle(R.string.pref_title_http_proxy_port)
key = PrefKeys.HTTP_PROXY_PORT
isIconSpaceReserved = false
setSummaryProvider { text }
validatedEditTextPreference(null, ProxyConfiguration::isValidHostname) {
setTitle(R.string.pref_title_http_proxy_server)
key = PrefKeys.HTTP_PROXY_SERVER
isIconSpaceReserved = false
setSummaryProvider { text }
}
val portErrorMessage = getString(
R.string.pref_title_http_proxy_port_message,
ProxyConfiguration.MIN_PROXY_PORT,
ProxyConfiguration.MAX_PROXY_PORT
)
validatedEditTextPreference(portErrorMessage, ProxyConfiguration::isValidProxyPort) {
setTitle(R.string.pref_title_http_proxy_port)
key = PrefKeys.HTTP_PROXY_PORT
isIconSpaceReserved = false
setSummaryProvider { text }
}
}
}
}

25
app/src/main/java/com/keylesspalace/tusky/di/NetworkModule.kt
View file

@ -18,6 +18,7 @@ package com.keylesspalace.tusky.di
import android.content.Context
import android.content.SharedPreferences
import android.os.Build
import android.util.Log
import at.connyduck.calladapter.networkresult.NetworkResultCallAdapterFactory
import com.google.gson.Gson
import com.google.gson.GsonBuilder
@ -27,6 +28,10 @@ import com.keylesspalace.tusky.json.Rfc3339DateJsonAdapter
import com.keylesspalace.tusky.network.InstanceSwitchAuthInterceptor
import com.keylesspalace.tusky.network.MastodonApi
import com.keylesspalace.tusky.network.MediaUploadApi
import com.keylesspalace.tusky.settings.PrefKeys.HTTP_PROXY_ENABLED
import com.keylesspalace.tusky.settings.PrefKeys.HTTP_PROXY_PORT
import com.keylesspalace.tusky.settings.PrefKeys.HTTP_PROXY_SERVER
import com.keylesspalace.tusky.settings.ProxyConfiguration
import com.keylesspalace.tusky.util.getNonNullString
import dagger.Module
import dagger.Provides
@ -38,6 +43,7 @@ import retrofit2.Retrofit
import retrofit2.adapter.rxjava3.RxJava3CallAdapterFactory
import retrofit2.converter.gson.GsonConverterFactory
import retrofit2.create
import java.net.IDN
import java.net.InetSocketAddress
import java.net.Proxy
import java.util.Date
@ -64,9 +70,9 @@ class NetworkModule {
context: Context,
preferences: SharedPreferences
): OkHttpClient {
val httpProxyEnabled = preferences.getBoolean("httpProxyEnabled", false)
val httpServer = preferences.getNonNullString("httpProxyServer", "")
val httpPort = preferences.getNonNullString("httpProxyPort", "-1").toIntOrNull() ?: -1
val httpProxyEnabled = preferences.getBoolean(HTTP_PROXY_ENABLED, false)
val httpServer = preferences.getNonNullString(HTTP_PROXY_SERVER, "")
val httpPort = preferences.getNonNullString(HTTP_PROXY_PORT, "-1").toIntOrNull() ?: -1
val cacheSize = 25 * 1024 * 1024L // 25 MiB
val builder = OkHttpClient.Builder()
.addInterceptor { chain ->
@ -87,10 +93,13 @@ class NetworkModule {
.writeTimeout(30, TimeUnit.SECONDS)
.cache(Cache(context.cacheDir, cacheSize))
if (httpProxyEnabled && httpServer.isNotEmpty() && httpPort > 0 && httpPort < 65535) {
val address = InetSocketAddress.createUnresolved(httpServer, httpPort)
builder.proxy(Proxy(Proxy.Type.HTTP, address))
if (httpProxyEnabled) {
ProxyConfiguration.create(httpServer, httpPort)?.also { conf ->
val address = InetSocketAddress.createUnresolved(IDN.toASCII(conf.hostname), conf.port)
builder.proxy(Proxy(Proxy.Type.HTTP, address))
} ?: Log.w(TAG, "Invalid proxy configuration: ($httpServer, $httpPort)")
}
return builder
.apply {
addInterceptor(InstanceSwitchAuthInterceptor(accountManager))
@ -132,4 +141,8 @@ class NetworkModule {
.build()
.create()
}
companion object {
private const val TAG = "NetworkModule"
}
}

32
app/src/main/java/com/keylesspalace/tusky/settings/ProxyConfiguration.kt Normal file
View file

@ -0,0 +1,32 @@
package com.keylesspalace.tusky.settings
import java.net.IDN
class ProxyConfiguration private constructor(
val hostname: String,
val port: Int
) {
companion object {
fun create(hostname: String, port: Int): ProxyConfiguration? {
if (isValidHostname(IDN.toASCII(hostname)) && isValidProxyPort(port)) {
return ProxyConfiguration(hostname, port)
}
return null
}
fun isValidProxyPort(value: Any): Boolean = when (value) {
is String -> if (value == "") true else value.runCatching(String::toInt).map(
PROXY_RANGE::contains
).getOrDefault(false)
is Int -> PROXY_RANGE.contains(value)
else -> false
}
fun isValidHostname(hostname: String): Boolean =
IP_ADDRESS_REGEX.matches(hostname) || HOSTNAME_REGEX.matches(hostname)
const val MIN_PROXY_PORT = 0
const val MAX_PROXY_PORT = 65535
}
}
private val PROXY_RANGE = IntRange(ProxyConfiguration.MIN_PROXY_PORT, ProxyConfiguration.MAX_PROXY_PORT)
private val IP_ADDRESS_REGEX = Regex("^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$")
private val HOSTNAME_REGEX = Regex("^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\\-]*[a-zA-Z0-9])\\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\\-]*[A-Za-z0-9])$")

23
app/src/main/java/com/keylesspalace/tusky/settings/SettingsDSL.kt
View file

@ -1,8 +1,10 @@
package com.keylesspalace.tusky.settings
import android.content.Context
import android.widget.Button
import androidx.activity.result.ActivityResultRegistryOwner
import androidx.annotation.StringRes
import androidx.core.widget.doAfterTextChanged
import androidx.lifecycle.LifecycleOwner
import androidx.preference.CheckBoxPreference
import androidx.preference.EditTextPreference
@ -50,10 +52,25 @@ inline fun PreferenceParent.switchPreference(
return pref
}
inline fun PreferenceParent.editTextPreference(
inline fun PreferenceParent.validatedEditTextPreference(
errorMessage: String?,
crossinline isValid: (a: String) -> Boolean,
builder: EditTextPreference.() -> Unit
): EditTextPreference {
val pref = EditTextPreference(context)
pref.setOnBindEditTextListener { editText ->
editText.doAfterTextChanged { editable ->
requireNotNull(editable)
val btn = editText.rootView.findViewById<Button>(android.R.id.button1)
if (isValid(editable.toString())) {
editText.error = null
btn.isEnabled = true
} else {
editText.error = errorMessage
btn.isEnabled = false
}
}
}
builder(pref)
addPref(pref)
return pref
@ -69,12 +86,12 @@ inline fun PreferenceParent.checkBoxPreference(
}
inline fun PreferenceParent.preferenceCategory(
@StringRes title: Int,
@StringRes title: Int? = null,
builder: PreferenceParent.(PreferenceCategory) -> Unit
) {
val category = PreferenceCategory(context)
addPref(category)
category.setTitle(title)
title?.run(category::setTitle)
val newParent = PreferenceParent(context) { category.addPreference(it) }
builder(newParent, category)
}

1
app/src/main/res/values/strings.xml
View file

@ -282,6 +282,7 @@
<string name="pref_title_http_proxy_enable">Enable HTTP proxy</string>
<string name="pref_title_http_proxy_server">HTTP proxy server</string>
<string name="pref_title_http_proxy_port">HTTP proxy port</string>
<string name="pref_title_http_proxy_port_message">Port should be between %d and %d</string>
<string name="pref_default_post_privacy">Default post privacy</string>
<string name="pref_default_post_language">Default posting language</string>

46
app/src/test/java/com/keylesspalace/tusky/entity/ProxyConfigurationTest.kt Normal file
View file

@ -0,0 +1,46 @@
package com.keylesspalace.tusky.entity
import com.keylesspalace.tusky.settings.ProxyConfiguration
import org.junit.Assert
import org.junit.Test
class ProxyConfigurationTest {
@Test
fun `serialized non-int is not valid proxy port`() {
Assert.assertFalse(ProxyConfiguration.isValidProxyPort("should fail"))
Assert.assertFalse(ProxyConfiguration.isValidProxyPort("1.5"))
}
@Test
fun `number outside port range is not valid`() {
Assert.assertFalse(ProxyConfiguration.isValidProxyPort("${ProxyConfiguration.MIN_PROXY_PORT - 1}"))
Assert.assertFalse(ProxyConfiguration.isValidProxyPort("${ProxyConfiguration.MAX_PROXY_PORT + 1}"))
}
@Test
fun `number in port range, inclusive of min and max, is valid`() {
Assert.assertTrue(ProxyConfiguration.isValidProxyPort(ProxyConfiguration.MIN_PROXY_PORT))
Assert.assertTrue(ProxyConfiguration.isValidProxyPort(ProxyConfiguration.MAX_PROXY_PORT))
Assert.assertTrue(ProxyConfiguration.isValidProxyPort((ProxyConfiguration.MIN_PROXY_PORT + ProxyConfiguration.MAX_PROXY_PORT) / 2))
}
@Test
fun `create with invalid port yields null`() {
Assert.assertNull(ProxyConfiguration.create("hostname", ProxyConfiguration.MIN_PROXY_PORT - 1))
}
@Test
fun `create with invalid hostname yields null`() {
Assert.assertNull(ProxyConfiguration.create(".", ProxyConfiguration.MIN_PROXY_PORT))
}
@Test
fun `create with valid hostname and port yields the config object`() {
Assert.assertTrue(ProxyConfiguration.create("hostname", ProxyConfiguration.MIN_PROXY_PORT) is ProxyConfiguration)
}
@Test
fun `unicode hostname allowed`() {
Assert.assertTrue(ProxyConfiguration.create("federação.social", ProxyConfiguration.MIN_PROXY_PORT) is ProxyConfiguration)
}
}