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Qt 6.11 is out! See what's new in the release blog

Running application with user privillegions.

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  • S Offline
    S Offline
    SimonSchroeder
    wrote last edited by
    #24

    There is a reason why you can't just run anything with root privileges. And under normal circumstance you should not try to circumvent it. The most important question is if you really need to run something as root (while your own software is not started with root privileges). Qt does not provide anything special to run a process as root. You need to use OS functionality to run an elevated process (you can use QProcess to start sudo or use any of the other methods mentioned before). In the case of sudo it is up to you to ask the user for the password and hand it to sudo. But, even this is a bad idea because it is really easy to leak the password for an attacker.

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    • N Offline
      N Offline
      nicholas_ru
      wrote last edited by nicholas_ru
      #25

      No,no attacker not recieve permissions, but idea not bad. I love Qt and this function for me needed for devleopment, because user also must be entering password.

      JonBJ 1 Reply Last reply
      0
      • N nicholas_ru

        No,no attacker not recieve permissions, but idea not bad. I love Qt and this function for me needed for devleopment, because user also must be entering password.

        JonBJ Offline
        JonBJ Offline
        JonB
        wrote last edited by
        #26

        @nicholas_ru
        We have given you the alternative approaches for running setuid. Qt itself is not going to add anything in this area.

        1 Reply Last reply
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        • N Offline
          N Offline
          nicholas_ru
          wrote last edited by
          #27

          Well then my development will be limited and I'll have to look for other ways to implement it.

          JonBJ SGaistS 2 Replies Last reply
          0
          • N nicholas_ru

            Well then my development will be limited and I'll have to look for other ways to implement it.

            JonBJ Offline
            JonBJ Offline
            JonB
            wrote last edited by JonB
            #28

            @nicholas_ru
            Gave you the 3 ways to implement it above in https://forum.qt.io/post/837390. Don't know what other ways you want or need, don't know why you don't pursue these. You seem to ask the question but not prepared to follow the suggestions. Up to you.

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            • N nicholas_ru

              Well then my development will be limited and I'll have to look for other ways to implement it.

              SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote last edited by
              #29

              @nicholas_ru Since you used GParted as an example, use the same technique they use.

              https://gitlab.gnome.org/GNOME/gparted/-/blob/master/src/main.cc?ref_type=heads
              https://gitlab.gnome.org/GNOME/gparted/-/blob/master/org.gnome.gparted.policy.in.in?ref_type=heads

              Interested in AI ? www.idiap.ch
              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

              Pl45m4P 1 Reply Last reply
              3
              • SGaistS SGaist

                @nicholas_ru Since you used GParted as an example, use the same technique they use.

                https://gitlab.gnome.org/GNOME/gparted/-/blob/master/src/main.cc?ref_type=heads
                https://gitlab.gnome.org/GNOME/gparted/-/blob/master/org.gnome.gparted.policy.in.in?ref_type=heads

                Pl45m4P Offline
                Pl45m4P Offline
                Pl45m4
                wrote last edited by
                #30

                @SGaist

                Nice to know :)

                *.in.in file?!
                So a file template for a file template for an actual file? :D


                If debugging is the process of removing software bugs, then programming must be the process of putting them in.

                ~E. W. Dijkstra

                SGaistS 1 Reply Last reply
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                • Pl45m4P Pl45m4

                  @SGaist

                  Nice to know :)

                  *.in.in file?!
                  So a file template for a file template for an actual file? :D

                  SGaistS Offline
                  SGaistS Offline
                  SGaist
                  Lifetime Qt Champion
                  wrote last edited by
                  #31

                  @Pl45m4 said in Running application with user privillegions.:

                  @SGaist

                  Nice to know :)

                  *.in.in file?!
                  So a file template for a file template for an actual file? :D

                  There's never enough indirection... :-D

                  Interested in AI ? www.idiap.ch
                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                  1 Reply Last reply
                  0
                  • K Offline
                    K Offline
                    kaixoo
                    wrote last edited by
                    #32

                    I think he wants to run a process with administrative privileges by showing a UAC (User Account Control) dialog. This is what, for example, balenaEtcher does when it needs to burn a drive. Is this correct?

                    JonBJ 1 Reply Last reply
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                    • K kaixoo

                      I think he wants to run a process with administrative privileges by showing a UAC (User Account Control) dialog. This is what, for example, balenaEtcher does when it needs to burn a drive. Is this correct?

                      JonBJ Offline
                      JonBJ Offline
                      JonB
                      wrote last edited by
                      #33

                      @kaixoo If you read the OP is under Linux, so there is no such thing as "UAC".

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                      • N Offline
                        N Offline
                        nicholas_ru
                        wrote last edited by nicholas_ru
                        #34

                        Linus Torvalds hate C++ because it dificult and not t easy.Not UAC, read up, Linux.It so for me, i liked, Unixpled

                        JonBJ 1 Reply Last reply
                        0
                        • J.HilkJ Offline
                          J.HilkJ Offline
                          J.Hilk
                          Moderators
                          wrote last edited by
                          #35

                          Torvalds allowed Rust into the kernel (2022) but not C++.

                          Grandpa is doing his own thing and I stopped questioning stuff.


                          Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct


                          Q: What's that?
                          A: It's blue light.
                          Q: What does it do?
                          A: It turns blue.

                          N 1 Reply Last reply
                          1
                          • N nicholas_ru

                            Linus Torvalds hate C++ because it dificult and not t easy.Not UAC, read up, Linux.It so for me, i liked, Unixpled

                            JonBJ Offline
                            JonBJ Offline
                            JonB
                            wrote last edited by
                            #36

                            @nicholas_ru said in Running application with user privillegions.:

                            Linus Torvalds hate C++ because it dificult and not t easy.Not UAC, read up, Linux.It so for me, i liked, Unixpled

                            Don't know what you're saying, but the ability to set or change user privilege has nothing to do with C++ and really little to do with programming.

                            1 Reply Last reply
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                            • N Offline
                              N Offline
                              nicholas_ru
                              wrote last edited by nicholas_ru
                              #37

                              It's talk about them, that code must be easy, and user permissions change must be flug also easy.

                              Pl45m4P 1 Reply Last reply
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                              • N nicholas_ru

                                It's talk about them, that code must be easy, and user permissions change must be flug also easy.

                                Pl45m4P Offline
                                Pl45m4P Offline
                                Pl45m4
                                wrote last edited by
                                #38

                                @nicholas_ru

                                If changing user permissions were that easy, it would defeat its purpose.


                                If debugging is the process of removing software bugs, then programming must be the process of putting them in.

                                ~E. W. Dijkstra

                                1 Reply Last reply
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                                • N Offline
                                  N Offline
                                  nicholas_ru
                                  wrote last edited by
                                  #39

                                  It must easy for developers and users.

                                  1 Reply Last reply
                                  0
                                  • J.HilkJ J.Hilk

                                    Torvalds allowed Rust into the kernel (2022) but not C++.

                                    Grandpa is doing his own thing and I stopped questioning stuff.

                                    N Offline
                                    N Offline
                                    nicholas_ru
                                    wrote last edited by
                                    #40

                                    @J.Hilk grandfather create for you Linux and GIT,you use it

                                    1 Reply Last reply
                                    0
                                    • SGaistS Offline
                                      SGaistS Offline
                                      SGaist
                                      Lifetime Qt Champion
                                      wrote last edited by
                                      #41

                                      Just in case: KDE has Polkit-Qt

                                      Interested in AI ? www.idiap.ch
                                      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                      1 Reply Last reply
                                      0
                                      • N Offline
                                        N Offline
                                        nicholas_ru
                                        wrote last edited by nicholas_ru
                                        #42

                                        I use LXDE.This is GNOME.Gvfs.I am not knowladge how understand.Paradox

                                        1 Reply Last reply
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