C++ program getting sudo password

[thekeymaker]

Hi everyone.

my problem is such:

I am working in Linux on a program in c++ that incorporates qt.
In this programs I am using some system() calls.
these system() calls are operation that require root privileges.
so for example:

mycode:

system("sudo su");

but when I run this my program just freezes because it is waiting for a password.

Is there any way with qt that I could prompt the user for a password and then pass it in when I call the system() commands???

so something layed out like this:

// Message box: what is you password?

system("sudo su") < password;

I hope you can understand this. Thanks for any help that anyone maybe able to supply!!

[gerard4143]

The proper way to do this in Linux is with Setuid.

Check out this link...Gerard4143

GNU C Library (libc) Programming Guide - Setuid Program Example

[Rubberman]

If this program needs to run as root, then make it owned by root and set the setuid bit so that it will always run as a root process. WARNING! This is very dangerous as it provides a means for malware to access the system as root. Be very judicious in your use of this capability.

# as root
chown root progname
chmod ugo+s progname

Doing this, when then program is run, it will run as user root and thus system() calls will run with root privileges. You will not need to do the "sudo su -" thing.

[thekeymaker]

Thank you both for the reply!!!

I will have to try this and see if it works!!!

Many thanks again!