Serviceless rewrite, part 1

Signed-off-by: Samuel Holland <samuel@sholland.org>

1 files changed, 111 insertions, 0 deletions

diff --git a/app/src/main/java/com/wireguard/android/activity/SettingsActivity.java b/app/src/main/java/com/wireguard/android/activity/SettingsActivity.java
new file mode 100644
index 00000000..c6c69789
--- /dev/null
+++ b/app/src/main/java/com/wireguard/android/activity/SettingsActivity.java
@@ -0,0 +1,111 @@
+package com.wireguard.android.activity;
+
+import android.app.Activity;
+import android.app.Fragment;
+import android.content.Context;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.preference.Preference;
+import android.preference.PreferenceFragment;
+
+import com.wireguard.android.R;
+import com.wireguard.android.preference.TunnelListPreference;
+import com.wireguard.android.util.RootShell;
+
+/**
+ * Interface for changing application-global persistent settings.
+ */
+
+public class SettingsActivity extends Activity {
+    public static final String KEY_SHOW_QUICK_TILE_SETTINGS = "show_quick_tile_settings";
+
+    @Override
+    protected void onCreate(final Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (getFragmentManager().findFragmentById(android.R.id.content) == null) {
+            final Fragment fragment = new SettingsFragment();
+            fragment.setArguments(getIntent().getExtras());
+            getFragmentManager().beginTransaction()
+                    .add(android.R.id.content, fragment)
+                    .commit();
+        }
+    }
+
+    public static class SettingsFragment extends PreferenceFragment {
+        @Override
+        public void onCreate(final Bundle savedInstanceState) {
+            super.onCreate(savedInstanceState);
+            addPreferencesFromResource(R.xml.preferences);
+            final Preference installTools = findPreference("install_cmd_line_tools");
+            installTools.setOnPreferenceClickListener(preference -> {
+                new ToolsInstaller(preference).execute();
+                return true;
+            });
+            if (getArguments() != null && getArguments().getBoolean(KEY_SHOW_QUICK_TILE_SETTINGS))
+                ((TunnelListPreference) findPreference("primary_config")).show();
+        }
+    }
+
+    private static final class ToolsInstaller extends AsyncTask<Void, Void, Integer> {
+        private static final String[][] LIBRARY_NAMED_EXECUTABLES = {
+                {"libwg.so", "wg"},
+                {"libwg-quick.so", "wg-quick"}
+        };
+
+        private final Context context;
+        private final Preference preference;
+
+        private ToolsInstaller(final Preference preference) {
+            context = preference.getContext();
+            this.preference = preference;
+            preference.setEnabled(false);
+            preference.setSummary(context.getString(R.string.install_cmd_line_tools_progress));
+        }
+
+        @Override
+        protected Integer doInBackground(final Void... voids) {
+            final String libDir = context.getApplicationInfo().nativeLibraryDir;
+            final StringBuilder cmd = new StringBuilder();
+
+            cmd.append("set -ex;");
+
+            for (final String[] libraryNamedExecutable : LIBRARY_NAMED_EXECUTABLES) {
+                final String arg1 = '\'' + libDir + '/' + libraryNamedExecutable[0] + '\'';
+                final String arg2 = "'/system/xbin/" + libraryNamedExecutable[1] + '\'';
+
+                cmd.append(String.format("cmp -s %s %s && ", arg1, arg2));
+            }
+            cmd.append("exit 114;");
+
+            cmd.append("trap 'mount -o ro,remount /system' EXIT;");
+            cmd.append("mount -o rw,remount /system;");
+
+            for (final String[] libraryNamedExecutable : LIBRARY_NAMED_EXECUTABLES) {
+                final String arg1 = '\'' + libDir + '/' + libraryNamedExecutable[0] + '\'';
+                final String arg2 = "'/system/xbin/" + libraryNamedExecutable[1] + '\'';
+                cmd.append(String.format("cp %s %s; chmod 755 %s;", arg1, arg2, arg2));
+            }
+
+            return new RootShell(context).run(null, cmd.toString());
+        }
+
+        @Override
+        protected void onPostExecute(final Integer ret) {
+            final String status;
+
+            switch (ret) {
+                case 0:
+                    status = context.getString(R.string.install_cmd_line_tools_success);
+                    break;
+                case 114 /* OsConstants.EALREADY */:
+                    status = context.getString(R.string.install_cmd_line_tools_already);
+                    break;
+                default:
+                    status = context.getString(R.string.install_cmd_line_tools_failure);
+                    break;
+            }
+            preference.setSummary(status);
+            preference.setEnabled(true);
+        }
+    }
+}