package me.barwnikk.library.linuxcommandroot;
import java.awt.BorderLayout;
import java.io.IOException;
import java.io.InputStream;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
public class LinuxCommand {
static InputStream is;
static byte[] buff = new byte[8192];
static int n;
public static String getPasswdForRoot() throws IOException {
Process p = Runtime.getRuntime().exec(new String[]{"sh","-c","sudo -S id"});
is = p.getErrorStream();
n = is.read(buff, 0, 8192);
String text = new String(buff,0,n);
if(text.contains("root"))return null; //not set password
JPanel panel = new JPanel(new BorderLayout());
JLabel lab = new JLabel(text);
panel.add(lab,BorderLayout.NORTH);
JPasswordField password = new JPasswordField();
panel.add(password,BorderLayout.SOUTH);
JOptionPane.showMessageDialog(null, panel);
byte[] passwd = (new String(password.getPassword())+"\r\n").getBytes();
p.getOutputStream().write(passwd);
p.getOutputStream().flush();
n = is.read(buff, 0, 8192);
if(n==-1) return new String(password.getPassword());
text = new String(buff,0,n);
while(true) {
lab.setText(text);
JOptionPane.showMessageDialog(null, panel);
p = Runtime.getRuntime().exec(new String[]{"sh","-c","sudo -S id"});
is = p.getErrorStream();
n = is.read(buff, 0, 8192);
passwd = (new String(password.getPassword())+"\n").getBytes();
p.getOutputStream().write(passwd);
p.getOutputStream().flush();
n = is.read(buff, 0, 8192);
if(n==-1) return new String(password.getPassword());
text = new String(buff,0,n);
}
}
public static Process runFromRoot(String command, String password) throws IOException {
byte[] passwd = (password+"\n").getBytes(); //for OutputStream better is byte[]
Process p = Runtime.getRuntime().exec(new String[]{"sh","-c","sudo -S "+command});
p.getOutputStream().write(passwd);
p.getOutputStream().flush();
return p;
}
}
這是一個小型的API來獲取root密碼(用戶必須編寫正確的)。用法示例:
public static void main(String[] args) throws IOException, InterruptedException {
String password = LinuxCommand.getPasswdForRoot();
System.out.println("stdout of 'id':");
Process p = LinuxCommand.runFromRoot("id",password);
System.out.print(streamToString(p.getInputStream()));
System.out.println("stdout of 'fdisk -l':");
p = LinuxCommand.runFromRoot("fdisk -l",password);
System.out.print(streamToString(p.getInputStream()));
}
方法streamToString:在我的測試
public static String streamToString(InputStream stream) {
String read = "";
try {
while((n=stream.read(buff, 0, 8192))!=-1) {
read+=new String(buff,0,n);
}
} catch (IOException e) {
e.printStackTrace();
}
return read;
}
採樣返回(波蘭文):
stdout of 'id':
uid=0(root) gid=0(root) grupy=0(root)
stdout of 'fdisk -l':
Disk /dev/sda: 640.1 GB, 640135028736 bytes
głowic: 255, sektorów/ścieżkę: 63, cylindrów: 77825, w sumie sektorów: 1250263728
Jednostka = sektorów, czyli 1 * 512 = 512 bajtów
Rozmiar sektora (logiczny/fizyczny) w bajtach: 512/4096
Rozmiar we/wy (minimalny/optymalny) w bajtach: 4096/4096
Identyfikator dysku: 0xc56b9eef
Urządzenie Rozruch Początek Koniec Bloków ID System
/dev/sda1 2048 37064703 18531328 27 Hidden NTFS WinRE
/dev/sda2 * 37064704 37269503 102400 7 HPFS/NTFS/exFAT
/dev/sda3 37269504 456711884 209721190+ 7 HPFS/NTFS/exFAT
/dev/sda4 456711946 1250258624 396773339+ f W95 Rozsz. (LBA)
Partycja 4 nie zaczyna się na granicy bloku fizycznego.
/dev/sda5 456711948 810350729 176819391 7 HPFS/NTFS/exFAT
Partycja 5 nie zaczyna się na granicy bloku fizycznego.
/dev/sda6 810350793 862802954 26226081 7 HPFS/NTFS/exFAT
Partycja 6 nie zaczyna się na granicy bloku fizycznego.
/dev/sda7 862803018 1020078408 78637695+ 83 Linux
Partycja 7 nie zaczyna się na granicy bloku fizycznego.
/dev/sda8 1020079368 1229791814 104856223+ 7 HPFS/NTFS/exFAT
/dev/sda9 1229791878 1250258624 10233373+ 7 HPFS/NTFS/exFAT
Partycja 9 nie zaczyna się na granicy bloku fizycznego.
對於你:
LinuxCommand.runFromRoot("shutdown -h 20",getPasswdForRoot());
這個API創建並寫入Process pa提供ssword。
所以我猜你想讓我使用掃描儀或類似的東西來檢索用戶的密碼,然後將其呈現給我的SUDO_ASKPASS變量? 這個SUDO_ASKPASS變量將被聲明在哪裏,在我的情況下會分配什麼? 而我使用OS X所以gksudo不會幫助我 – user1700434
我知道你從這個頁面採取了答案: http://www.coderanch.com/t/517209/java/java/provide-password-prompt-通過Java 我不明白這個答案,這就是爲什麼我問這裏 – user1700434