@Override
public void output(int id, String line) {
// general check if line contains file
if (line.contains(fileName)) {
// try to match line exactly
try {
Matcher permissionMatcher = permissionPattern.matcher(line);
if (permissionMatcher.find()) {
permissions = convertPermissions(permissionMatcher.group(1));
Log.d(RootCommands.TAG, "Found permissions: " + permissions);
} else {
Log.d(RootCommands.TAG, "Permissions were not found in ls command!");
}
// try to parse for symlink
Matcher symlinkMatcher = symlinkPattern.matcher(line);
if (symlinkMatcher.find()) {
/*
* TODO: If symlink points to a file in the same directory the path is not
* absolute!!!
*/
symlink = symlinkMatcher.group(1);
Log.d(RootCommands.TAG, "Symlink found: " + symlink);
} else {
Log.d(RootCommands.TAG, "No symlink found!");
}
} catch (Exception e) {
Log.e(RootCommands.TAG, "Error with regex!", e);
}
}
}
/**
* Copys a file to a destination. Because cp is not available on all android devices, we use dd or
* cat.
*
* @param source example: /data/data/org.adaway/files/hosts
* @param destination example: /system/etc/hosts
* @param remountAsRw remounts the destination as read/write before writing to it
* @param preservePermissions tries to copy file attributes from source to destination, if only
* cat is available only permissions are preserved
* @return true if it was successfully copied
* @throws BrokenBusyboxException
* @throws IOException
* @throws TimeoutException
*/
public void copyFile(
File source, File destination, boolean remountAsRw, boolean preservePermissions)
throws FailedExecuteCommand, FileNotFoundException, IOException {
/*
* dd can only copy files, but we can not check if the source is a file without invoking
* shell commands, because from Java we probably have no read access, thus we only check if
* they are ending with trailing slashes
*/
if (source.isDirectory() || destination.isDirectory()) {
throw new FileNotFoundException("dd can only copy files!");
}
// remount destination as read/write before copying to it
if (remountAsRw) {
if (!remount(destination, "RW")) {
Log.d(
RootCommands.TAG,
"Remounting failed! There is probably no need to remount this partition!");
}
}
// get permissions of source before overwriting
String permissions = null;
if (preservePermissions) {
permissions = getFilePermissions(source.getAbsolutePath());
}
try {
shell.execCommand("toolbox dd if=" + source + " of=" + destination);
} catch (FailedExecuteCommand e) {
shell.execCommand("toolbox cat " + source + " > " + destination);
}
// set back permissions from source to destination
if (preservePermissions) {
setFilePermissions(destination, permissions);
}
// remount destination back to read only
if (remountAsRw) {
if (!remount(destination, "RO")) {
Log.d(
RootCommands.TAG,
"Remounting failed! There is probably no need to remount this partition!");
}
}
}
public LsCommand(String file) {
super("toolbox ls -l " + file);
// get only filename:
this.fileName = (new File(file)).getName();
Log.d(RootCommands.TAG, "fileName: " + fileName);
/**
* regex to get pid out of ps line, example:
*
* <pre>
* with busybox:
* lrwxrwxrwx 1 root root 15 Aug 13 12:14 dev/stdin -> /proc/self/fd/0
*
* with toolbox:
* lrwxrwxrwx root root 15 Aug 13 12:14 stdin -> /proc/self/fd/0
*
* Regex:
* ^.*?(\\S{10}) .* $
* </pre>
*/
permissionRegex = "^.*?(\\S{10}).*$";
permissionPattern = Pattern.compile(permissionRegex);
/**
* regex to get symlink
*
* <pre>
* -> /proc/self/fd/0
* ^.*?\\-\\> \\s+ (.*) $
* </pre>
*/
symlinkRegex = "^.*?\\-\\>\\s+(.*)$";
symlinkPattern = Pattern.compile(symlinkRegex);
}
/**
* This will return an ArrayList of the class Mount. The class mount contains the following
* property's: device mountPoint type flags
*
* <p>These will provide you with any information you need to work with the mount points.
*
* @return <code>ArrayList<Mount></code> an ArrayList of the class Mount.
* @throws Exception if we cannot return the mount points.
*/
protected static ArrayList<Mount> getMounts() throws Exception {
final String tempFile = "/data/local/RootToolsMounts";
// copy /proc/mounts to tempfile. Directly reading it does not work on 4.3
Shell shell = Shell.startRootShell();
Toolbox tb = new Toolbox(shell);
tb.copyFile("/proc/mounts", tempFile, false, false);
tb.setFilePermissions(tempFile, "777");
shell.close();
LineNumberReader lnr = null;
lnr = new LineNumberReader(new FileReader(tempFile));
String line;
ArrayList<Mount> mounts = new ArrayList<Mount>();
while ((line = lnr.readLine()) != null) {
Log.d(RootCommands.TAG, line);
String[] fields = line.split(" ");
mounts.add(
new Mount(
new File(fields[0]), // device
new File(fields[1]), // mountPoint
fields[2], // fstype
fields[3] // flags
));
}
lnr.close();
return mounts;
}
/**
* @param file String that represent the file, including the full path to the file and its name.
* @return File permissions as String, for example: 777, returns null on error
* @throws IOException
* @throws TimeoutException
* @throws BrokenBusyboxException
*/
public String getFilePermissions(String file)
throws FailedExecuteCommand, BrokenBusyboxException, IOException {
Log.d(RootCommands.TAG, "Checking permissions for " + file);
String permissions = null;
if (fileExists(file)) {
Log.d(RootCommands.TAG, file + " was found.");
LsCommand lsCommand = new LsCommand(file);
shell.execCommand(lsCommand);
permissions = lsCommand.getPermissions();
}
return permissions;
}
/**
* This method can be used to kill a running process
*
* <p>(commands: ps, kill)
*
* @param processName name of process to kill
* @return <code>true</code> if process was found and killed successfully
* @throws IOException
* @throws TimeoutException
* @throws BrokenBusyboxException
*/
public boolean killAll(String processName)
throws FailedExecuteCommand, TimeoutException, IOException {
Log.d(RootCommands.TAG, "Killing process " + processName);
PsCommand psCommand = new PsCommand(processName);
shell.execCommand(psCommand);
// kill processes
if (!psCommand.getPids().isEmpty()) {
// example: kill -9 1234 1222 5343
SimpleCommand killCommand = new SimpleCommand("toolbox kill -9 " + psCommand.getPidsString());
shell.execCommand(killCommand);
return killCommand.getExitCode() == 0;
} else {
Log.d(RootCommands.TAG, "No pid found! Nothing was killed!");
return false;
}
}
@Override
public void output(int id, String line) {
// general check if line contains processName
if (line.contains(processName)) {
Matcher psMatcher = psPattern.matcher(line);
// try to match line exactly
try {
if (psMatcher.find()) {
String pid = psMatcher.group(1);
// add to pids list
pids.add(pid);
Log.d(RootCommands.TAG, "Found pid: " + pid);
} else {
Log.d(RootCommands.TAG, "Matching in ps command failed!");
}
} catch (Exception e) {
Log.e(RootCommands.TAG, "Error with regex!", e);
}
}
}
/**
* This will tell you how the specified mount is mounted. rw, ro, etc...
*
* @param path The mount you want to check
* @return <code>String</code> What the mount is mounted as.
* @throws Exception if we cannot determine how the mount is mounted.
*/
public String getMountedAs(String path) throws Exception {
ArrayList<Mount> mounts = Remounter.getMounts();
if (mounts != null) {
for (Mount mount : mounts) {
if (path.contains(mount.getMountPoint().getAbsolutePath())) {
Log.d(RootCommands.TAG, (String) mount.getFlags().toArray()[0]);
return (String) mount.getFlags().toArray()[0];
}
}
}
throw new Exception();
}
/**
* This will return a String that represent the symlink for a specified file.
*
* @param file The path to the file to get the Symlink for. (must have absolute path)
* @return A String that represent the symlink for a specified file or null if no symlink exists.
* @throws IOException
* @throws TimeoutException
* @throws BrokenBusyboxException
*/
public String getSymlink(String file) throws FailedExecuteCommand, TimeoutException, IOException {
Log.d(RootCommands.TAG, "Find symlink for " + file);
String symlink;
LsCommand lsCommand = new LsCommand(file);
shell.execCommand(lsCommand);
symlink = lsCommand.getSymlink();
return symlink;
}
/**
* Check if there is enough space on partition where target is located
*
* @param size size of file to put on partition
* @param target path where to put the file
* @return true if it will fit on partition of target, false if it will not fit.
*/
public boolean hasEnoughSpaceOnPartition(String target, long size) {
try {
// new File(target).getFreeSpace() (API 9) is not working on data partition
// get directory without file
String directory = new File(target).getParent();
StatFs stat = new StatFs(directory);
long blockSize = stat.getBlockSize();
long availableBlocks = stat.getAvailableBlocks();
long availableSpace = availableBlocks * blockSize;
Log.i(
RootCommands.TAG,
"Checking for enough space: Target: "
+ target
+ ", directory: "
+ directory
+ " size: "
+ size
+ ", availableSpace: "
+ availableSpace);
if (size < availableSpace) {
return true;
} else {
Log.e(RootCommands.TAG, "Not enough space on partition!");
return false;
}
} catch (Exception e) {
// if new StatFs(directory) fails catch IllegalArgumentException and just return true as
// workaround
Log.e(RootCommands.TAG, "Problem while getting available space on partition!", e);
return true;
}
}
private Mount findMountPointRecursive(String file) {
try {
ArrayList<Mount> mounts = getMounts();
for (File path = new File(file); path != null; ) {
for (Mount mount : mounts) {
if (mount.getMountPoint().equals(path)) {
return mount;
}
}
}
return null;
} catch (IOException e) {
throw new RuntimeException(e);
} catch (Exception e) {
Log.e(RootCommands.TAG, "Exception", e);
}
return null;
}
public void setFilePermissions(File file, String permissions) throws FailedExecuteCommand {
Log.d(RootCommands.TAG, "Set permissions of " + file + " to " + permissions);
shell.execCommand("toolbox chmod " + permissions + " \"" + file + "\"");
}
/**
* This will take a path, which can contain the file name as well, and attempt to remount the
* underlying partition.
*
* <p>For example, passing in the following string:
* "/system/bin/some/directory/that/really/would/never/exist" will result in /system ultimately
* being remounted. However, keep in mind that the longer the path you supply, the more work this
* has to do, and the slower it will run.
*
* @param file file path
* @param mountType mount type: pass in RO (Read only) or RW (Read Write)
* @return a <code>boolean</code> which indicates whether or not the partition has been remounted
* as specified.
*/
protected boolean remount(String file, String mountType) {
// if the path has a trailing slash get rid of it.
if (file.endsWith("/") && !file.equals("/")) {
file = file.substring(0, file.lastIndexOf("/"));
}
// Make sure that what we are trying to remount is in the mount list.
boolean foundMount = false;
while (!foundMount) {
try {
for (Mount mount : getMounts()) {
Log.d(RootCommands.TAG, mount.getMountPoint().toString());
if (file.equals(mount.getMountPoint().toString())) {
foundMount = true;
break;
}
}
} catch (Exception e) {
Log.e(RootCommands.TAG, "Exception", e);
return false;
}
if (!foundMount) {
try {
file = (new File(file).getParent()).toString();
} catch (Exception e) {
Log.e(RootCommands.TAG, "Exception", e);
return false;
}
}
}
Mount mountPoint = findMountPointRecursive(file);
Log.d(
RootCommands.TAG,
"Remounting "
+ mountPoint.getMountPoint().getAbsolutePath()
+ " as "
+ mountType.toLowerCase(Locale.US));
final boolean isMountMode = mountPoint.getFlags().contains(mountType.toLowerCase(Locale.US));
if (!isMountMode) {
// grab an instance of the internal class
try {
SimpleCommand command =
new SimpleCommand(
"busybox mount -o remount,"
+ mountType.toLowerCase(Locale.US)
+ " "
+ mountPoint.getDevice().getAbsolutePath()
+ " "
+ mountPoint.getMountPoint().getAbsolutePath(),
"toolbox mount -o remount,"
+ mountType.toLowerCase(Locale.US)
+ " "
+ mountPoint.getDevice().getAbsolutePath()
+ " "
+ mountPoint.getMountPoint().getAbsolutePath(),
"mount -o remount,"
+ mountType.toLowerCase(Locale.US)
+ " "
+ mountPoint.getDevice().getAbsolutePath()
+ " "
+ mountPoint.getMountPoint().getAbsolutePath(),
"/system/bin/toolbox mount -o remount,"
+ mountType.toLowerCase(Locale.US)
+ " "
+ mountPoint.getDevice().getAbsolutePath()
+ " "
+ mountPoint.getMountPoint().getAbsolutePath());
// execute on shell
shell.add(command).waitForFinish();
} catch (Exception e) {
}
mountPoint = findMountPointRecursive(file);
}
if (mountPoint != null) {
Log.d(RootCommands.TAG, mountPoint.getFlags() + " AND " + mountType.toLowerCase(Locale.US));
if (mountPoint.getFlags().contains(mountType.toLowerCase(Locale.US))) {
Log.d(RootCommands.TAG, mountPoint.getFlags().toString());
return true;
} else {
Log.d(RootCommands.TAG, mountPoint.getFlags().toString());
}
} else {
Log.d(RootCommands.TAG, "mountPoint is null");
}
return false;
}
