ui: add view to debug MDM settings and add the syspolicy handlers (#199)
* mdm: add Android syspolicy handler (#195) Updates tailscale/corp#18202 Adds a syspolicy handler for Android in cmd/tailscale. This allows the Go code to use the syspolicy package to read values set by a system administrator using the Android RestrictionsManager. Out of the box, this adds supports for a number of MDM policies that are fully integrated on the Go side, such as `ExitNodeID` (forced exit node functionality). Signed-off-by: Andrea Gottardo <andrea@gottardo.me> Signed-off-by: Jonathan Nobels <jonathan@tailscale.com> * ui: add view to debug MDM settings Adds a view to see the currently set MDM settings, we're going to need this to debug actual MDM integrations more effectively. Signed-off-by: Andrea Gottardo <andrea@gottardo.me> Signed-off-by: Jonathan Nobels <jonathan@tailscale.com> --------- Signed-off-by: Andrea Gottardo <andrea@gottardo.me> Signed-off-by: Jonathan Nobels <jonathan@tailscale.com> Co-authored-by: Andrea Gottardo <andrea@gottardo.me>pull/205/head
Jonathan Nobels
2 months ago
committed by
GitHub
parent
1f457399b8
commit
f275656c25
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package com.tailscale.ipn.ui.view
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import androidx.compose.foundation.layout.Arrangement
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import androidx.compose.foundation.layout.Column
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import androidx.compose.foundation.layout.Row
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import androidx.compose.foundation.layout.fillMaxWidth
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import androidx.compose.foundation.layout.padding
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import androidx.compose.foundation.lazy.LazyColumn
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import androidx.compose.foundation.lazy.items
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import androidx.compose.material3.ExperimentalMaterial3Api
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import androidx.compose.material3.MaterialTheme
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import androidx.compose.material3.Scaffold
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import androidx.compose.material3.Text
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import androidx.compose.material3.TopAppBar
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import androidx.compose.material3.TopAppBarDefaults
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import androidx.compose.runtime.Composable
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import androidx.compose.ui.Modifier
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import androidx.compose.ui.res.stringResource
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import androidx.compose.ui.text.font.FontFamily
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import androidx.compose.ui.text.font.FontWeight
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import com.tailscale.ipn.R
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import com.tailscale.ipn.mdm.AlwaysNeverUserDecidesSetting
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import com.tailscale.ipn.mdm.BooleanSetting
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import com.tailscale.ipn.mdm.MDMSettings
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import com.tailscale.ipn.mdm.ShowHideSetting
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import com.tailscale.ipn.mdm.StringArraySetting
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import com.tailscale.ipn.mdm.StringSetting
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import com.tailscale.ipn.ui.util.defaultPaddingModifier
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@OptIn(ExperimentalMaterial3Api::class)
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@Composable
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fun MDMSettingsDebugView(mdmSettings: MDMSettings) {
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Scaffold(
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topBar = {
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TopAppBar(
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colors = TopAppBarDefaults.topAppBarColors(
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containerColor = MaterialTheme.colorScheme.surfaceContainer,
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titleContentColor = MaterialTheme.colorScheme.primary,
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),
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title = {
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Text(stringResource(R.string.current_mdm_settings))
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}
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)
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},
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) { innerPadding ->
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LazyColumn(modifier = Modifier.padding(innerPadding)) {
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items(enumValues<BooleanSetting>()) { booleanSetting ->
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MDMSettingView(
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title = booleanSetting.localizedTitle,
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caption = booleanSetting.key,
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valueDescription = mdmSettings.get(booleanSetting).toString()
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)
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}
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items(enumValues<StringSetting>()) { stringSetting ->
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MDMSettingView(
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title = stringSetting.localizedTitle,
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caption = stringSetting.key,
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valueDescription = mdmSettings.get(stringSetting).toString()
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)
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}
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items(enumValues<ShowHideSetting>()) { showHideSetting ->
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MDMSettingView(
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title = showHideSetting.localizedTitle,
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caption = showHideSetting.key,
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valueDescription = mdmSettings.get(showHideSetting).toString()
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)
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}
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items(enumValues<AlwaysNeverUserDecidesSetting>()) { anuSetting ->
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MDMSettingView(
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title = anuSetting.localizedTitle,
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caption = anuSetting.key,
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valueDescription = mdmSettings.get(anuSetting).toString()
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)
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}
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items(enumValues<StringArraySetting>()) { stringArraySetting ->
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MDMSettingView(
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title = stringArraySetting.localizedTitle,
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caption = stringArraySetting.key,
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valueDescription = mdmSettings.get(stringArraySetting).toString()
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)
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}
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}
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}
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}
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@Composable
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fun MDMSettingView(title: String, caption: String, valueDescription: String) {
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Row(
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horizontalArrangement = Arrangement.SpaceBetween,
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modifier = defaultPaddingModifier()
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.fillMaxWidth()
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) {
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Column {
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Text(title, maxLines = 3)
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Text(
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caption,
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fontSize = MaterialTheme.typography.labelSmall.fontSize,
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color = MaterialTheme.colorScheme.tertiary,
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fontFamily = FontFamily.Monospace
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)
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}
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Text(
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valueDescription,
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color = MaterialTheme.colorScheme.secondary,
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fontFamily = FontFamily.Monospace,
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maxLines = 1,
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fontWeight = FontWeight.SemiBold
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)
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}
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}
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@ -0,0 +1,65 @@
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package main
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import (
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"log"
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"github.com/tailscale/tailscale-android/cmd/jni"
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"tailscale.com/util/syspolicy"
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)
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// androidHandler is a syspolicy handler for the Android version of the Tailscale client,
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// which lets the main networking code read values set via the Android RestrictionsManager.
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type androidHandler struct {
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a *App
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}
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func (h androidHandler) ReadString(key string) (string, error) {
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if key == "" {
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return "", syspolicy.ErrNoSuchKey
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}
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retVal := ""
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err := jni.Do(h.a.jvm, func(env *jni.Env) error {
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cls := jni.GetObjectClass(env, h.a.appCtx)
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m := jni.GetMethodID(env, cls, "getSyspolicyStringValue", "(Ljava/lang/String;)Ljava/lang/String;")
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strObj, err := jni.CallObjectMethod(env, h.a.appCtx, m, jni.Value(jni.JavaString(env, key)))
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if err != nil {
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return err
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}
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retVal = jni.GoString(env, jni.String(strObj))
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return nil
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})
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if err != nil {
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log.Printf("syspolicy: failed to get string value via JNI: %v", err)
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}
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return retVal, err
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}
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func (h androidHandler) ReadBoolean(key string) (bool, error) {
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if key == "" {
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return false, syspolicy.ErrNoSuchKey
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}
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retVal := false
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err := jni.Do(h.a.jvm, func(env *jni.Env) error {
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cls := jni.GetObjectClass(env, h.a.appCtx)
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m := jni.GetMethodID(env, cls, "getSyspolicyBooleanValue", "(Ljava/lang/String;)Z")
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b, err := jni.CallBooleanMethod(env, h.a.appCtx, m, jni.Value(jni.JavaString(env, key)))
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retVal = b
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return err
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})
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if err != nil {
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log.Printf("syspolicy: failed to get bool value via JNI: %v", err)
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}
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return retVal, err
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}
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func (h androidHandler) ReadUInt64(key string) (uint64, error) {
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if key == "" {
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return 0, syspolicy.ErrNoSuchKey
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}
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// TODO(angott): drop ReadUInt64 everywhere. We are not using it.
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log.Fatalf("ReadUInt64 is not implemented on Android")
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return 0, nil
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}
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