在Qt QProcess中运行sudo命令

Question

I am developing a software in Qt in which I created a terminal. I run different commands through QProcess in that but when I run root commands it ask for password in terminal. I tried to run via sudo but it only accepts password in terminal. Is there any way to give password from another source like pop up widget or a text file?

Answer 1

You could try

• Running your application as root (which is really a very bad idea, actually!)
• Edit sudoers file and add the commands you want to run to this file. Then you can run these commands like sudo run_x_cmd with no password ie, your QProcess can run these commands and you won't be asked for password.

Answer 2

I have created a QProcess with "bash" as program.

Then just write to it:

echo mypassword | sudo -S ifconfig eth0 192.168.1.123\n

Answer 3

Adding a password to a text file in order to source input for the command is a very bad idea, as it weakens security.

Version 1.8 of sudo provides a plugin architecture, which would allow you to link to it from your application and may provide a solution for you.

The SDK for the sudo plugin API can be found in the documentation .