Method remount

cSploit/src/org/csploit/android/core/ExecChecker.java:176–224

check if we can execute binaries in dir after remounting it without the noexec mount flag. @param dir the directory to check

(String dir)

   * @param dir the directory to check
   */
  private boolean remount(String dir) {
    BufferedReader mounts = null;
    String line,mountpoint,tmp;

    try {
      // find the mountpoint
      mounts = new BufferedReader(new FileReader("/proc/mounts"));

      mountpoint = null;

      while((line = mounts.readLine()) != null) {
        tmp = line.split(" ")[1];
        if( line.contains("noexec") &&
            dir.startsWith(tmp) &&
            (mountpoint == null || tmp.length() > mountpoint.length())) {
          mountpoint = tmp;
        }
      }

      if(mountpoint == null)
        return false;

      // remount
      if(System.getTools().raw.run(String.format("mount -oremount,exec '%s'", mountpoint))!=0) {
        Logger.warning(String.format("cannot remount '%s' with exec flag", mountpoint));
        return false;
      }

      // check it now
      if(user(dir)) {
        synchronized (this) {
          if(modifiedMountpoit != null && !modifiedMountpoit.equals(mountpoint))
            restoreMountpoint(modifiedMountpoit);
          modifiedMountpoit = mountpoint;
          resolvedDir = dir;
        }
        return true;
      }
    } catch (Exception e) {
      System.errorLogging(e);
    } finally {
      if(mounts!=null) {
        try { mounts.close(); }
        catch (IOException ignored) { }
      }
    }

    return false;
  }

  private void restoreMountpoint(String mountpoint) {
    try {