gecko/mobile/android/base/GeckoProfile.java

609 lines
21 KiB
Java

/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko;
import org.mozilla.gecko.GeckoProfileDirectories.NoMozillaDirectoryException;
import org.mozilla.gecko.GeckoProfileDirectories.NoSuchProfileException;
import org.mozilla.gecko.Telemetry;
import org.mozilla.gecko.TelemetryContract;
import org.mozilla.gecko.util.INIParser;
import org.mozilla.gecko.util.INISection;
import android.content.Context;
import android.text.TextUtils;
import android.util.Log;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.nio.charset.Charset;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Hashtable;
public final class GeckoProfile {
private static final String LOGTAG = "GeckoProfile";
// Used to "lock" the guest profile, so that we'll always restart in it
private static final String LOCK_FILE_NAME = ".active_lock";
public static final String DEFAULT_PROFILE = "default";
private static final String GUEST_PROFILE = "guest";
private static HashMap<String, GeckoProfile> sProfileCache = new HashMap<String, GeckoProfile>();
private static String sDefaultProfileName = null;
public static boolean sIsUsingCustomProfile = false;
private final String mName;
private final File mMozillaDir;
private File mProfileDir; // Not final because this is lazily computed.
// Constants to cache whether or not a profile is "locked".
private enum LockState {
LOCKED,
UNLOCKED,
UNDEFINED
};
// Caches whether or not a profile is "locked". Only used by the guest profile to determine if it should
// be reused or deleted on startup
private LockState mLocked = LockState.UNDEFINED;
// Caches the guest profile dir.
private static File sGuestDir = null;
private static GeckoProfile sGuestProfile = null;
private boolean mInGuestMode = false;
public static GeckoProfile get(Context context) {
boolean isGeckoApp = false;
try {
isGeckoApp = context instanceof GeckoApp;
} catch (NoClassDefFoundError ex) {}
if (isGeckoApp) {
// Check for a cached profile on this context already
// TODO: We should not be caching profile information on the Activity context
final GeckoApp geckoApp = (GeckoApp) context;
if (geckoApp.mProfile != null) {
return geckoApp.mProfile;
}
}
// If the guest profile exists and is locked, return it
GeckoProfile guest = GeckoProfile.getGuestProfile(context);
if (guest != null && guest.locked()) {
return guest;
}
if (isGeckoApp) {
final GeckoApp geckoApp = (GeckoApp) context;
String defaultProfileName;
try {
defaultProfileName = geckoApp.getDefaultProfileName();
} catch (NoMozillaDirectoryException e) {
// If this failed, we're screwed. But there are so many callers that
// we'll just throw a RuntimeException.
Log.wtf(LOGTAG, "Unable to get default profile name.", e);
throw new RuntimeException(e);
}
// Otherwise, get the default profile for the Activity.
return get(context, defaultProfileName);
}
return get(context, "");
}
public static GeckoProfile get(Context context, String profileName) {
synchronized (sProfileCache) {
GeckoProfile profile = sProfileCache.get(profileName);
if (profile != null)
return profile;
}
return get(context, profileName, (File)null);
}
public static GeckoProfile get(Context context, String profileName, String profilePath) {
File dir = null;
if (!TextUtils.isEmpty(profilePath)) {
dir = new File(profilePath);
if (!dir.exists() || !dir.isDirectory()) {
Log.w(LOGTAG, "requested profile directory missing: " + profilePath);
}
}
return get(context, profileName, dir);
}
public static GeckoProfile get(Context context, String profileName, File profileDir) {
if (context == null) {
throw new IllegalArgumentException("context must be non-null");
}
// if no profile was passed in, look for the default profile listed in profiles.ini
// if that doesn't exist, look for a profile called 'default'
if (TextUtils.isEmpty(profileName) && profileDir == null) {
try {
profileName = GeckoProfile.getDefaultProfileName(context);
} catch (NoMozillaDirectoryException e) {
// We're unable to do anything sane here.
throw new RuntimeException(e);
}
}
// actually try to look up the profile
synchronized (sProfileCache) {
GeckoProfile profile = sProfileCache.get(profileName);
if (profile == null) {
try {
profile = new GeckoProfile(context, profileName);
} catch (NoMozillaDirectoryException e) {
// We're unable to do anything sane here.
throw new RuntimeException(e);
}
profile.setDir(profileDir);
sProfileCache.put(profileName, profile);
} else {
profile.setDir(profileDir);
}
return profile;
}
}
public static boolean removeProfile(Context context, String profileName) {
final boolean success;
try {
success = new GeckoProfile(context, profileName).remove();
} catch (NoMozillaDirectoryException e) {
Log.w(LOGTAG, "Unable to remove profile: no Mozilla directory.", e);
return true;
}
if (success) {
// Clear all shared prefs for the given profile.
GeckoSharedPrefs.forProfileName(context, profileName)
.edit().clear().commit();
}
return success;
}
public static GeckoProfile createGuestProfile(Context context) {
try {
removeGuestProfile(context);
// We need to force the creation of a new guest profile if we want it outside of the normal profile path,
// otherwise GeckoProfile.getDir will try to be smart and build it for us in the normal profiles dir.
getGuestDir(context).mkdir();
GeckoProfile profile = getGuestProfile(context);
profile.lock();
return profile;
} catch (Exception ex) {
Log.e(LOGTAG, "Error creating guest profile", ex);
}
return null;
}
public static void leaveGuestSession(Context context) {
GeckoProfile profile = getGuestProfile(context);
if (profile != null) {
profile.unlock();
}
}
private static File getGuestDir(Context context) {
if (sGuestDir == null) {
sGuestDir = context.getFileStreamPath("guest");
}
return sGuestDir;
}
private static GeckoProfile getGuestProfile(Context context) {
if (sGuestProfile == null) {
File guestDir = getGuestDir(context);
if (guestDir.exists()) {
sGuestProfile = get(context, GUEST_PROFILE, guestDir);
sGuestProfile.mInGuestMode = true;
}
}
return sGuestProfile;
}
public static boolean maybeCleanupGuestProfile(final Context context) {
final GeckoProfile profile = getGuestProfile(context);
if (profile == null) {
return false;
} else if (!profile.locked()) {
profile.mInGuestMode = false;
// If the guest dir exists, but it's unlocked, delete it
removeGuestProfile(context);
return true;
}
return false;
}
private static void removeGuestProfile(Context context) {
boolean success = false;
try {
File guestDir = getGuestDir(context);
if (guestDir.exists()) {
success = delete(guestDir);
}
} catch (Exception ex) {
Log.e(LOGTAG, "Error removing guest profile", ex);
}
if (success) {
// Clear all shared prefs for the guest profile.
GeckoSharedPrefs.forProfileName(context, GUEST_PROFILE)
.edit().clear().commit();
}
}
public static boolean delete(File file) throws IOException {
// Try to do a quick initial delete
if (file.delete())
return true;
if (file.isDirectory()) {
// If the quick delete failed and this is a dir, recursively delete the contents of the dir
String files[] = file.list();
for (String temp : files) {
File fileDelete = new File(file, temp);
delete(fileDelete);
}
}
// Even if this is a dir, it should now be empty and delete should work
return file.delete();
}
private GeckoProfile(Context context, String profileName) throws NoMozillaDirectoryException {
mName = profileName;
mMozillaDir = GeckoProfileDirectories.getMozillaDirectory(context);
}
// Warning, Changing the lock file state from outside apis will cause this to become out of sync
public boolean locked() {
if (mLocked != LockState.UNDEFINED) {
return mLocked == LockState.LOCKED;
}
// Don't use getDir() as it will create a dir if none exists
if (mProfileDir != null && mProfileDir.exists()) {
File lockFile = new File(mProfileDir, LOCK_FILE_NAME);
boolean res = lockFile.exists();
mLocked = res ? LockState.LOCKED : LockState.UNLOCKED;
} else {
mLocked = LockState.UNLOCKED;
}
return mLocked == LockState.LOCKED;
}
public boolean lock() {
try {
// If this dir doesn't exist getDir will create it for us
File lockFile = new File(getDir(), LOCK_FILE_NAME);
boolean result = lockFile.createNewFile();
if (result) {
mLocked = LockState.LOCKED;
} else {
mLocked = LockState.UNLOCKED;
}
return result;
} catch(IOException ex) {
Log.e(LOGTAG, "Error locking profile", ex);
}
mLocked = LockState.UNLOCKED;
return false;
}
public boolean unlock() {
// Don't use getDir() as it will create a dir
if (mProfileDir == null || !mProfileDir.exists()) {
return true;
}
try {
File lockFile = new File(mProfileDir, LOCK_FILE_NAME);
boolean result = delete(lockFile);
if (result) {
mLocked = LockState.UNLOCKED;
} else {
mLocked = LockState.LOCKED;
}
return result;
} catch(IOException ex) {
Log.e(LOGTAG, "Error unlocking profile", ex);
}
mLocked = LockState.LOCKED;
return false;
}
public boolean inGuestMode() {
return mInGuestMode;
}
private void setDir(File dir) {
if (dir != null && dir.exists() && dir.isDirectory()) {
mProfileDir = dir;
}
}
public String getName() {
return mName;
}
public synchronized File getDir() {
forceCreate();
return mProfileDir;
}
public synchronized GeckoProfile forceCreate() {
if (mProfileDir != null) {
return this;
}
try {
// Check if a profile with this name already exists.
try {
mProfileDir = findProfileDir();
Log.d(LOGTAG, "Found profile dir.");
} catch (NoSuchProfileException noSuchProfile) {
// If it doesn't exist, create it.
mProfileDir = createProfileDir();
}
} catch (IOException ioe) {
Log.e(LOGTAG, "Error getting profile dir", ioe);
}
return this;
}
public File getFile(String aFile) {
File f = getDir();
if (f == null)
return null;
return new File(f, aFile);
}
/**
* Moves the session file to the backup session file.
*
* sessionstore.js should hold the current session, and sessionstore.bak
* should hold the previous session (where it is used to read the "tabs
* from last time"). Normally, sessionstore.js is moved to sessionstore.bak
* on a clean quit, but this doesn't happen if Fennec crashed. Thus, this
* method should be called after a crash so sessionstore.bak correctly
* holds the previous session.
*/
public void moveSessionFile() {
File sessionFile = getFile("sessionstore.js");
if (sessionFile != null && sessionFile.exists()) {
File sessionFileBackup = getFile("sessionstore.bak");
sessionFile.renameTo(sessionFileBackup);
}
}
/**
* Get the string from a session file.
*
* The session can either be read from sessionstore.js or sessionstore.bak.
* In general, sessionstore.js holds the current session, and
* sessionstore.bak holds the previous session.
*
* @param readBackup if true, the session is read from sessionstore.bak;
* otherwise, the session is read from sessionstore.js
*
* @return the session string
*/
public String readSessionFile(boolean readBackup) {
File sessionFile = getFile(readBackup ? "sessionstore.bak" : "sessionstore.js");
try {
if (sessionFile != null && sessionFile.exists()) {
return readFile(sessionFile);
}
} catch (IOException ioe) {
Log.e(LOGTAG, "Unable to read session file", ioe);
}
return null;
}
public String readFile(String filename) throws IOException {
File dir = getDir();
if (dir == null) {
throw new IOException("No profile directory found");
}
File target = new File(dir, filename);
return readFile(target);
}
private String readFile(File target) throws IOException {
FileReader fr = new FileReader(target);
try {
StringBuilder sb = new StringBuilder();
char[] buf = new char[8192];
int read = fr.read(buf);
while (read >= 0) {
sb.append(buf, 0, read);
read = fr.read(buf);
}
return sb.toString();
} finally {
fr.close();
}
}
private boolean remove() {
try {
final File dir = getDir();
if (dir.exists()) {
delete(dir);
}
try {
mProfileDir = findProfileDir();
} catch (NoSuchProfileException noSuchProfile) {
// If the profile doesn't exist, there's nothing left for us to do.
return false;
}
final INIParser parser = GeckoProfileDirectories.getProfilesINI(mMozillaDir);
final Hashtable<String, INISection> sections = parser.getSections();
for (Enumeration<INISection> e = sections.elements(); e.hasMoreElements();) {
final INISection section = e.nextElement();
String name = section.getStringProperty("Name");
if (name == null || !name.equals(mName)) {
continue;
}
if (section.getName().startsWith("Profile")) {
// ok, we have stupid Profile#-named things. Rename backwards.
try {
int sectionNumber = Integer.parseInt(section.getName().substring("Profile".length()));
String curSection = "Profile" + sectionNumber;
String nextSection = "Profile" + (sectionNumber+1);
sections.remove(curSection);
while (sections.containsKey(nextSection)) {
parser.renameSection(nextSection, curSection);
sectionNumber++;
curSection = nextSection;
nextSection = "Profile" + (sectionNumber+1);
}
} catch (NumberFormatException nex) {
// uhm, malformed Profile thing; we can't do much.
Log.e(LOGTAG, "Malformed section name in profiles.ini: " + section.getName());
return false;
}
} else {
// this really shouldn't be the case, but handle it anyway
parser.removeSection(mName);
return true;
}
}
parser.write();
return true;
} catch (IOException ex) {
Log.w(LOGTAG, "Failed to remove profile.", ex);
return false;
}
}
/**
* @return the default profile name for this application, or
* {@link GeckoProfile#DEFAULT_PROFILE} if none could be found.
*
* @throws NoMozillaDirectoryException
* if the Mozilla directory did not exist and could not be
* created.
*/
public static String getDefaultProfileName(final Context context) throws NoMozillaDirectoryException {
// Have we read the default profile from the INI already?
// Changing the default profile requires a restart, so we don't
// need to worry about runtime changes.
if (sDefaultProfileName != null) {
return sDefaultProfileName;
}
final String profileName = GeckoProfileDirectories.findDefaultProfileName(context);
if (profileName == null) {
// Note that we don't persist this back to profiles.ini.
sDefaultProfileName = DEFAULT_PROFILE;
return DEFAULT_PROFILE;
}
sDefaultProfileName = profileName;
return sDefaultProfileName;
}
private File findProfileDir() throws NoSuchProfileException {
return GeckoProfileDirectories.findProfileDir(mMozillaDir, mName);
}
private File createProfileDir() throws IOException {
INIParser parser = GeckoProfileDirectories.getProfilesINI(mMozillaDir);
// Salt the name of our requested profile
String saltedName = GeckoProfileDirectories.saltProfileName(mName);
File profileDir = new File(mMozillaDir, saltedName);
while (profileDir.exists()) {
saltedName = GeckoProfileDirectories.saltProfileName(mName);
profileDir = new File(mMozillaDir, saltedName);
}
// Attempt to create the salted profile dir
if (!profileDir.mkdirs()) {
throw new IOException("Unable to create profile.");
}
Log.d(LOGTAG, "Created new profile dir.");
// Now update profiles.ini
// If this is the first time its created, we also add a General section
// look for the first profile number that isn't taken yet
int profileNum = 0;
boolean isDefaultSet = false;
INISection profileSection;
while ((profileSection = parser.getSection("Profile" + profileNum)) != null) {
profileNum++;
if (profileSection.getProperty("Default") != null) {
isDefaultSet = true;
}
}
profileSection = new INISection("Profile" + profileNum);
profileSection.setProperty("Name", mName);
profileSection.setProperty("IsRelative", 1);
profileSection.setProperty("Path", saltedName);
if (parser.getSection("General") == null) {
INISection generalSection = new INISection("General");
generalSection.setProperty("StartWithLastProfile", 1);
parser.addSection(generalSection);
}
if (!isDefaultSet && !mName.startsWith("webapp")) {
// only set as default if this is the first non-webapp
// profile we're creating
profileSection.setProperty("Default", 1);
// We have no intention of stopping this session. The FIRSTRUN session
// ends when the browsing session/activity has ended. All events
// during firstrun will be tagged as FIRSTRUN.
Telemetry.startUISession(TelemetryContract.Session.FIRSTRUN);
}
parser.addSection(profileSection);
parser.write();
// Write out profile creation time, mirroring the logic in nsToolkitProfileService.
try {
FileOutputStream stream = new FileOutputStream(profileDir.getAbsolutePath() + File.separator + "times.json");
OutputStreamWriter writer = new OutputStreamWriter(stream, Charset.forName("UTF-8"));
try {
writer.append("{\"created\": " + System.currentTimeMillis() + "}\n");
} finally {
writer.close();
}
} catch (Exception e) {
// Best-effort.
Log.w(LOGTAG, "Couldn't write times.json.", e);
}
return profileDir;
}
}