mirror of
https://github.com/mozilla/gecko-dev.git
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405 lines
14 KiB
Java
405 lines
14 KiB
Java
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
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* ***** BEGIN LICENSE BLOCK *****
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* ***** END LICENSE BLOCK ***** */
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package org.mozilla.gecko;
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import org.mozilla.gecko.util.INIParser;
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import org.mozilla.gecko.util.INISection;
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import android.content.Context;
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import android.os.SystemClock;
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import android.text.TextUtils;
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import android.util.Log;
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import java.io.File;
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import java.io.FileReader;
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import java.io.IOException;
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import java.util.Enumeration;
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import java.util.HashMap;
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import java.util.Hashtable;
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public final class GeckoProfile {
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private static final String LOGTAG = "GeckoProfile";
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private static HashMap<String, GeckoProfile> sProfileCache = new HashMap<String, GeckoProfile>();
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private static String sDefaultProfileName = null;
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private final Context mContext;
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private final String mName;
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private File mMozDir;
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private File mDir;
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static private INIParser getProfilesINI(Context context) {
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File filesDir = context.getFilesDir();
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File mozillaDir = new File(filesDir, "mozilla");
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File profilesIni = new File(mozillaDir, "profiles.ini");
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return new INIParser(profilesIni);
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}
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public static GeckoProfile get(Context context) {
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if (context instanceof GeckoApp)
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return get(context, ((GeckoApp)context).getDefaultProfileName());
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return get(context, "");
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}
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public static GeckoProfile get(Context context, String profileName) {
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synchronized (sProfileCache) {
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GeckoProfile profile = sProfileCache.get(profileName);
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if (profile != null)
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return profile;
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}
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return get(context, profileName, null);
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}
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public static GeckoProfile get(Context context, String profileName, String profilePath) {
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if (context == null) {
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throw new IllegalArgumentException("context must be non-null");
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}
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// if no profile was passed in, look for the default profile listed in profiles.ini
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// if that doesn't exist, look for a profile called 'default'
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if (TextUtils.isEmpty(profileName) && TextUtils.isEmpty(profilePath)) {
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profileName = GeckoProfile.findDefaultProfile(context);
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if (profileName == null)
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profileName = "default";
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}
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// actually try to look up the profile
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synchronized (sProfileCache) {
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GeckoProfile profile = sProfileCache.get(profileName);
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if (profile == null) {
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profile = new GeckoProfile(context, profileName, profilePath);
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sProfileCache.put(profileName, profile);
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} else {
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profile.setDir(profilePath);
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}
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return profile;
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}
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}
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public static File ensureMozillaDirectory(Context context) throws IOException {
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synchronized (context) {
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File filesDir = context.getFilesDir();
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File mozDir = new File(filesDir, "mozilla");
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if (! mozDir.exists()) {
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if (! mozDir.mkdirs()) {
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throw new IOException("Unable to create mozilla directory at " + mozDir.getAbsolutePath());
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}
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}
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return mozDir;
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}
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}
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public static boolean removeProfile(Context context, String profileName) {
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return new GeckoProfile(context, profileName).remove();
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}
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private GeckoProfile(Context context, String profileName) {
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mContext = context;
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mName = profileName;
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}
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private GeckoProfile(Context context, String profileName, String profilePath) {
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mContext = context;
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mName = profileName;
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setDir(profilePath);
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}
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private void setDir(String profilePath) {
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if (!TextUtils.isEmpty(profilePath)) {
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File dir = new File(profilePath);
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if (dir.exists() && dir.isDirectory()) {
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mDir = dir;
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} else {
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Log.w(LOGTAG, "requested profile directory missing: " + profilePath);
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}
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}
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}
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public String getName() {
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return mName;
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}
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public synchronized File getDir() {
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if (mDir != null) {
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return mDir;
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}
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try {
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// Check for old profiles that may need migration.
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ProfileMigrator profileMigrator = new ProfileMigrator(mContext);
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if (!GeckoApp.sIsUsingCustomProfile &&
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!profileMigrator.isProfileMoved()) {
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Log.i(LOGTAG, "New installation or update, checking for old profiles.");
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profileMigrator.launchMoveProfile();
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}
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// now check if a profile with this name that already exists
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File mozillaDir = ensureMozillaDirectory(mContext);
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mDir = findProfileDir(mozillaDir);
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if (mDir == null) {
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// otherwise create it
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mDir = createProfileDir(mozillaDir);
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} else {
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Log.d(LOGTAG, "Found profile dir: " + mDir.getAbsolutePath());
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}
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} catch (IOException ioe) {
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Log.e(LOGTAG, "Error getting profile dir", ioe);
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}
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return mDir;
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}
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public File getFile(String aFile) {
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File f = getDir();
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if (f == null)
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return null;
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return new File(f, aFile);
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}
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public File getFilesDir() {
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return mContext.getFilesDir();
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}
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/**
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* Determines whether the tabs from the previous session should be
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* automatically restored.
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*
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* sessionstore.js is moved to sessionstore.bak on a clean quit, so if we
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* still have sessionstore.js at startup, that means we were killed
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* uncleanly. This is caused by either 1) a crash, or 2) being killed by
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* android because of memory constraints. Either way, the existence of this
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* file indicates that we'll want to restore the previous session.
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*
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* @return whether the previous session should be restored
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*/
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public boolean shouldRestoreSession() {
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File sessionFile = getFile("sessionstore.js");
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return sessionFile != null && sessionFile.exists();
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}
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/**
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* Moves the session file to the backup session file.
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*
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* sessionstore.js should hold the current session, and sessionstore.bak
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* should hold the previous session (where it is used to read the "tabs
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* from last time"). Normally, sessionstore.js is moved to sessionstore.bak
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* on a clean quit, but this doesn't happen if Fennec crashed. Thus, this
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* method should be called after a crash so sessionstore.bak correctly
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* holds the previous session.
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*/
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public void moveSessionFile() {
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File sessionFile = getFile("sessionstore.js");
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if (sessionFile != null && sessionFile.exists()) {
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File sessionFileBackup = getFile("sessionstore.bak");
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sessionFile.renameTo(sessionFileBackup);
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}
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}
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/**
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* Get the string from a session file.
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*
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* The session can either be read from sessionstore.js or sessionstore.bak.
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* In general, sessionstore.js holds the current session, and
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* sessionstore.bak holds the previous session.
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*
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* @param readBackup if true, the session is read from sessionstore.bak;
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* otherwise, the session is read from sessionstore.js
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*
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* @return the session string
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*/
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public String readSessionFile(boolean readBackup) {
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File sessionFile = getFile(readBackup ? "sessionstore.bak" : "sessionstore.js");
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try {
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if (sessionFile != null && sessionFile.exists()) {
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return readFile(sessionFile);
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}
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} catch (IOException ioe) {
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Log.e(LOGTAG, "Unable to read session file", ioe);
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}
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return null;
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}
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public String readFile(String filename) throws IOException {
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File dir = getDir();
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if (dir == null) {
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throw new IOException("No profile directory found");
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}
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File target = new File(dir, filename);
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return readFile(target);
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}
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private String readFile(File target) throws IOException {
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FileReader fr = new FileReader(target);
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try {
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StringBuffer sb = new StringBuffer();
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char[] buf = new char[8192];
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int read = fr.read(buf);
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while (read >= 0) {
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sb.append(buf, 0, read);
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read = fr.read(buf);
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}
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return sb.toString();
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} finally {
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fr.close();
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}
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}
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private boolean remove() {
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try {
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File mozillaDir = ensureMozillaDirectory(mContext);
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mDir = findProfileDir(mozillaDir);
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if (mDir == null)
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return false;
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INIParser parser = getProfilesINI(mContext);
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Hashtable<String, INISection> sections = parser.getSections();
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for (Enumeration<INISection> e = sections.elements(); e.hasMoreElements();) {
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INISection section = e.nextElement();
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String name = section.getStringProperty("Name");
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if (name == null || !name.equals(mName))
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continue;
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if (section.getName().startsWith("Profile")) {
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// ok, we have stupid Profile#-named things. Rename backwards.
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try {
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int sectionNumber = Integer.parseInt(section.getName().substring("Profile".length()));
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String curSection = "Profile" + sectionNumber;
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String nextSection = "Profile" + (sectionNumber+1);
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sections.remove(curSection);
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while (sections.containsKey(nextSection)) {
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parser.renameSection(nextSection, curSection);
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sectionNumber++;
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curSection = nextSection;
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nextSection = "Profile" + (sectionNumber+1);
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}
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} catch (NumberFormatException nex) {
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// uhm, malformed Profile thing; we can't do much.
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Log.e(LOGTAG, "Malformed section name in profiles.ini: " + section.getName());
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return false;
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}
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} else {
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// this really shouldn't be the case, but handle it anyway
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parser.removeSection(mName);
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return true;
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}
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}
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parser.write();
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return true;
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} catch (IOException ex) {
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Log.w(LOGTAG, "Failed to remove profile " + mName + ":\n" + ex);
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return false;
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}
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}
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public static String findDefaultProfile(Context context) {
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// Have we read the default profile from the INI already?
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// Changing the default profile requires a restart, so we don't
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// need to worry about runtime changes.
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if (sDefaultProfileName != null) {
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return sDefaultProfileName;
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}
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// Open profiles.ini to find the correct path
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INIParser parser = getProfilesINI(context);
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for (Enumeration<INISection> e = parser.getSections().elements(); e.hasMoreElements();) {
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INISection section = e.nextElement();
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if (section.getIntProperty("Default") == 1) {
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sDefaultProfileName = section.getStringProperty("Name");
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return sDefaultProfileName;
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}
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}
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return null;
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}
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private File findProfileDir(File mozillaDir) {
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// Open profiles.ini to find the correct path
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INIParser parser = getProfilesINI(mContext);
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for (Enumeration<INISection> e = parser.getSections().elements(); e.hasMoreElements();) {
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INISection section = e.nextElement();
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String name = section.getStringProperty("Name");
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if (name != null && name.equals(mName)) {
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if (section.getIntProperty("IsRelative") == 1) {
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return new File(mozillaDir, section.getStringProperty("Path"));
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}
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return new File(section.getStringProperty("Path"));
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}
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}
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return null;
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}
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private static String saltProfileName(String name) {
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String allowedChars = "abcdefghijklmnopqrstuvwxyz0123456789";
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StringBuffer salt = new StringBuffer(16);
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for (int i = 0; i < 8; i++) {
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salt.append(allowedChars.charAt((int)(Math.random() * allowedChars.length())));
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}
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salt.append('.');
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salt.append(name);
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return salt.toString();
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}
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private File createProfileDir(File mozillaDir) throws IOException {
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INIParser parser = getProfilesINI(mContext);
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// Salt the name of our requested profile
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String saltedName = saltProfileName(mName);
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File profileDir = new File(mozillaDir, saltedName);
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while (profileDir.exists()) {
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saltedName = saltProfileName(mName);
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profileDir = new File(mozillaDir, saltedName);
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}
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// Attempt to create the salted profile dir
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if (! profileDir.mkdirs()) {
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throw new IOException("Unable to create profile at " + profileDir.getAbsolutePath());
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}
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Log.d(LOGTAG, "Created new profile dir at " + profileDir.getAbsolutePath());
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// Now update profiles.ini
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// If this is the first time its created, we also add a General section
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// look for the first profile number that isn't taken yet
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int profileNum = 0;
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while (parser.getSection("Profile" + profileNum) != null) {
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profileNum++;
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}
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INISection profileSection = new INISection("Profile" + profileNum);
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profileSection.setProperty("Name", mName);
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profileSection.setProperty("IsRelative", 1);
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profileSection.setProperty("Path", saltedName);
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if (parser.getSection("General") == null) {
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INISection generalSection = new INISection("General");
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generalSection.setProperty("StartWithLastProfile", 1);
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parser.addSection(generalSection);
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// only set as default if this is the first profile we're creating
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profileSection.setProperty("Default", 1);
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}
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parser.addSection(profileSection);
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parser.write();
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return profileDir;
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}
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}
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