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Code Releases Activity

Correct device renaming, save config via temp file (fixes #1059)

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Catfriend1 2018-04-30 22:32:49 +02:00 committed by Audrius Butkevicius
parent 22e03d65da
commit 3738f609ba
3 changed files with 86 additions and 22 deletions
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9
app/src/main/java/com/nutomic/syncthingandroid/service/Constants.java
View file

@ -46,6 +46,15 @@ public class Constants {
return new File(context.getFilesDir(), CONFIG_FILE);
}
/**
* File in the config folder we write to temporarily before renaming to CONFIG_FILE.
*/
static final String CONFIG_TEMP_FILE = "config.xml.tmp";
public static File getConfigTempFile(Context context) {
return new File(context.getFilesDir(), CONFIG_TEMP_FILE);
}
/**
* Name of the public key file in the data directory.
*/

50
app/src/main/java/com/nutomic/syncthingandroid/service/SyncthingRunnable.java
View file

@ -55,6 +55,7 @@ public class SyncthingRunnable implements Runnable {
@Inject NotificationHandler mNotificationHandler;
public enum Command {
deviceid, // Output the device ID to the command line.
generate, // Generate keys, a config file and immediately exit.
main, // Run the main Syncthing application.
resetdatabase, // Reset Syncthing's database
@ -75,6 +76,9 @@ public class SyncthingRunnable implements Runnable {
// Get preferences relevant to starting syncthing core.
mUseRoot = mPreferences.getBoolean(Constants.PREF_USE_ROOT, false) && Shell.SU.available();
switch (command) {
case deviceid:
mCommand = new String[]{ mSyncthingBinary.getPath(), "-home", mContext.getFilesDir().toString(), "--device-id" };
break;
case generate:
mCommand = new String[]{ mSyncthingBinary.getPath(), "-generate", mContext.getFilesDir().toString(), "-logflags=0" };
break;
@ -94,8 +98,13 @@ public class SyncthingRunnable implements Runnable {
@Override
public void run() {
run(false);
}
public String run(boolean returnStdOut) {
trimLogFile();
int ret;
String capturedStdOut = "";
// Make sure Syncthing is executable
try {
ProcessBuilder pb = new ProcessBuilder("chmod", "500", mSyncthingBinary.getPath());
@ -120,16 +129,37 @@ public class SyncthingRunnable implements Runnable {
mSyncthing.set(process);
Thread lInfo = log(process.getInputStream(), Log.INFO, true);
Thread lWarn = log(process.getErrorStream(), Log.WARN, true);
Thread lInfo = null;
Thread lWarn = null;
if (returnStdOut) {
BufferedReader br = null;
try {
br = new BufferedReader(new InputStreamReader(process.getInputStream(), Charsets.UTF_8));
String line;
while ((line = br.readLine()) != null) {
Log.println(Log.INFO, TAG_NATIVE, line);
capturedStdOut = capturedStdOut + line + "\n";
}
} catch (IOException e) {
Log.w(TAG, "Failed to read Syncthing's command line output", e);
} finally {
if (br != null)
br.close();
}
} else {
lInfo = log(process.getInputStream(), Log.INFO, true);
lWarn = log(process.getErrorStream(), Log.WARN, true);
}
niceSyncthing();
ret = process.waitFor();
Log.i(TAG, "Syncthing exited with code " + ret);
mSyncthing.set(null);
lInfo.join();
lWarn.join();
if (lInfo != null)
lInfo.join();
if (lWarn != null)
lWarn.join();
switch (ret) {
case 0:
@ -157,6 +187,7 @@ public class SyncthingRunnable implements Runnable {
if (process != null)
process.destroy();
}
return capturedStdOut;
}
private void putCustomEnvironmentVariables(Map<String, String> environment, SharedPreferences sp) {
@ -307,9 +338,9 @@ public class SyncthingRunnable implements Runnable {
*/
private Thread log(final InputStream is, final int priority, final boolean saveLog) {
Thread t = new Thread(() -> {
BufferedReader br = null;
try {
InputStreamReader isr = new InputStreamReader(is, Charsets.UTF_8);
BufferedReader br = new BufferedReader(isr);
br = new BufferedReader(new InputStreamReader(is, Charsets.UTF_8));
String line;
while ((line = br.readLine()) != null) {
Log.println(priority, TAG_NATIVE, line);
@ -321,6 +352,13 @@ public class SyncthingRunnable implements Runnable {
} catch (IOException e) {
Log.w(TAG, "Failed to read Syncthing's command line output", e);
}
if (br != null) {
try {
br.close();
} catch (IOException e) {
Log.w(TAG, "log: Failed to close bufferedReader", e);
}
}
});
t.start();
return t;

49
app/src/main/java/com/nutomic/syncthingandroid/util/ConfigXml.java
View file

@ -19,11 +19,15 @@ import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
import java.io.BufferedReader;
import java.io.File;
import java.io.InputStreamReader;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Locale;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.inject.Inject;
import javax.xml.parsers.DocumentBuilder;
@ -60,7 +64,7 @@ public class ConfigXml {
boolean isFirstStart = !mConfigFile.exists();
if (isFirstStart) {
Log.i(TAG, "App started for the first time. Generating keys and config.");
generateKeysConfig(context);
new SyncthingRunnable(context, SyncthingRunnable.Command.generate).run();
}
readConfig();
@ -68,10 +72,13 @@ public class ConfigXml {
if (isFirstStart) {
boolean changed = false;
/* Synthing devices */
changeLocalDeviceName();
/* Syncthing folders */
Log.i(TAG, "Starting syncthing to retrieve local device id.");
String logOutput = new SyncthingRunnable(context, SyncthingRunnable.Command.deviceid).run(true);
String localDeviceID = logOutput.replace("\n", "");
// Verify local device ID is correctly formatted.
if (localDeviceID.matches("^([A-Z0-9]{7}-){7}[A-Z0-9]{7}$")) {
changed = changeLocalDeviceName(localDeviceID) || changed;
}
changed = changeDefaultFolder() || changed;
// Save changes if we made any.
@ -96,10 +103,6 @@ public class ConfigXml {
Log.i(TAG, "Loaded Syncthing config file");
}
private void generateKeysConfig(Context context) {
new SyncthingRunnable(context, SyncthingRunnable.Command.generate).run();
}
public URL getWebGuiUrl() {
try {
return new URL("https://" + getGuiElement().getElementsByTagName("address").item(0).getTextContent());
@ -271,17 +274,23 @@ public class ConfigXml {
* Set model name as device name for Syncthing.
*
* We need to iterate through XML nodes manually, as mConfig.getDocumentElement() will also
* return nested elements inside folder element.
* return nested elements inside folder element. We have to check that we only rename the
* device corresponding to the local device ID.
* Returns if changes to the config have been made.
*/
private void changeLocalDeviceName() {
private boolean changeLocalDeviceName(String localDeviceID) {
NodeList childNodes = mConfig.getDocumentElement().getChildNodes();
for (int i = 0; i < childNodes.getLength(); i++) {
Node node = childNodes.item(i);
if (node.getNodeName().equals("device")) {
((Element) node).setAttribute("name", Build.MODEL);
if (((Element) node).getAttribute("id").equals(localDeviceID)) {
Log.i(TAG, "changeLocalDeviceName: Rename device ID " + localDeviceID + " to " + Build.MODEL);
((Element) node).setAttribute("name", Build.MODEL);
return true;
}
}
}
saveChanges();
return false;
}
/**
@ -313,15 +322,23 @@ public class ConfigXml {
Log.w(TAG, "Failed to save updated config. Cannot change the owner of the config file.");
return;
}
Log.i(TAG, "Writing updated config file");
File mConfigTempFile = Constants.getConfigTempFile(mContext);
try {
Log.i(TAG, "Writing updated config back to file");
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource domSource = new DOMSource(mConfig);
StreamResult streamResult = new StreamResult(mConfigFile);
StreamResult streamResult = new StreamResult(mConfigTempFile);
transformer.transform(domSource, streamResult);
} catch (TransformerException e) {
Log.w(TAG, "Failed to save updated config", e);
Log.w(TAG, "Failed to save temporary config file", e);
return;
}
try {
mConfigTempFile.renameTo(mConfigFile);
} catch (Exception e) {
Log.w(TAG, "Failed to rename temporary config file to original file");
}
}
}