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Build Postgresql plugin android Version 10

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  • sierdzioS sierdzio

    Postgre on Android? Will you connect to some remote database? For local DBs better stick with SQLite, much less hassle.

    W Offline
    W Offline
    Wesley_Morais
    wrote on last edited by
    #3

    @sierdzio yes, i will connect to remote database, for Desktop applications i not found problems.

    jsulmJ 1 Reply Last reply
    0
    • W Wesley_Morais

      @sierdzio yes, i will connect to remote database, for Desktop applications i not found problems.

      jsulmJ Offline
      jsulmJ Offline
      jsulm
      Lifetime Qt Champion
      wrote on last edited by
      #4

      @Wesley_Morais So, you're going to expose PostgreSQL server to the internet?!
      This is not a good idea. Usually a web interface is provided by the server to access the database indirectly in a controlled way without exposing the database server to the internet.

      https://forum.qt.io/topic/113070/qt-code-of-conduct

      W 1 Reply Last reply
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      • jsulmJ jsulm

        @Wesley_Morais So, you're going to expose PostgreSQL server to the internet?!
        This is not a good idea. Usually a web interface is provided by the server to access the database indirectly in a controlled way without exposing the database server to the internet.

        W Offline
        W Offline
        Wesley_Morais
        wrote on last edited by
        #5

        @jsulm for now i,m using only LAN to connect my Andriod App and the Database Server.

        i follow this wiki page: https://wiki.qt.io/Build_Qt_5_PostgreSQL_Plugin_for_Android
        to compile the driver, but to version 10 of postgresql doesn't work.

        When i put the Database on internet, i will put him behind to firewall.

        jsulmJ 1 Reply Last reply
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        • W Wesley_Morais

          @jsulm for now i,m using only LAN to connect my Andriod App and the Database Server.

          i follow this wiki page: https://wiki.qt.io/Build_Qt_5_PostgreSQL_Plugin_for_Android
          to compile the driver, but to version 10 of postgresql doesn't work.

          When i put the Database on internet, i will put him behind to firewall.

          jsulmJ Offline
          jsulmJ Offline
          jsulm
          Lifetime Qt Champion
          wrote on last edited by jsulm
          #6

          @Wesley_Morais said in Build Postgresql plugin android Version 10:

          i will put him behind to firewall

          How is this going to help? You still have to open the port to be able to connect.

          "doesn't work" - this is not enough information. Please specify exactly what does not work.

          https://forum.qt.io/topic/113070/qt-code-of-conduct

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          • jsulmJ jsulm

            @Wesley_Morais said in Build Postgresql plugin android Version 10:

            i will put him behind to firewall

            How is this going to help? You still have to open the port to be able to connect.

            "doesn't work" - this is not enough information. Please specify exactly what does not work.

            W Offline
            W Offline
            Wesley_Morais
            wrote on last edited by
            #7

            @jsulm Good morning, let me explain better what i want to do.

            Actualy my problem is "How to build build a plugin at version 10 of Postresql", because on this version of Postgresql (10 and UP) was implemented a new mechanism of security called SCRAM-SHA-256 and i want compile on this version too,because when this versions 9.X are obsolete, i can able to use another version more recent.
            In my search on the internet, i found this wikipage: https://wiki.qt.io/Build_Qt_5_PostgreSQL_Plugin_for_Android but is not aplicable to version 10 and up of PSQL, because on this page is showed how to compile on versions 9.X and using android NDK 10e that works with GCC toolchain and the most recent versions of Qt works with the CLang toolchains.

            1 Reply Last reply
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            • W Offline
              W Offline
              Wesley_Morais
              wrote on last edited by
              #8

              Hi, i found a solution.

              During the compile process, was necessary add a follow flag: "--disable-strong-random", and the compile process works fine.

              1 Reply Last reply
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              • H Offline
                H Offline
                Hjunior
                wrote on last edited by Hjunior
                #9

                Hello.

                I tried too many ways to build Qt 5.14.2 Android with QPSQL unfortunately didnt succeded. The famous page https://wiki.qt.io/Build_Qt_5_PostgreSQL_Plugin_for_Android is fully outdated since the NDK has version of 21 and above. I dont understand why QPSQL is not supplied by the Qt guys.

                Any guide will be good for me to build Qt 5.14.2 with Postgresql 9 or 10 and also QPSQL plugin building.

                If there is no way to do that or is the Xamarin good alternative?

                SGaistS 1 Reply Last reply
                0
                • H Hjunior

                  Hello.

                  I tried too many ways to build Qt 5.14.2 Android with QPSQL unfortunately didnt succeded. The famous page https://wiki.qt.io/Build_Qt_5_PostgreSQL_Plugin_for_Android is fully outdated since the NDK has version of 21 and above. I dont understand why QPSQL is not supplied by the Qt guys.

                  Any guide will be good for me to build Qt 5.14.2 with Postgresql 9 or 10 and also QPSQL plugin building.

                  If there is no way to do that or is the Xamarin good alternative?

                  SGaistS Offline
                  SGaistS Offline
                  SGaist
                  Lifetime Qt Champion
                  wrote on last edited by
                  #10

                  @Hjunior I can only offer educated guesses:

                  • Android being mainly a Mobile operating system, trying to connect a phone to such a backend usually means exposing your database to the internet which is always a bad idea.
                  • There's no official pre-built binaries for Androïd which would mean additional work to maintain the build, fix the bugs, follow security updates, etc.

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

                  H 1 Reply Last reply
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                  • SGaistS SGaist

                    @Hjunior I can only offer educated guesses:

                    • Android being mainly a Mobile operating system, trying to connect a phone to such a backend usually means exposing your database to the internet which is always a bad idea.
                    • There's no official pre-built binaries for Androïd which would mean additional work to maintain the build, fix the bugs, follow security updates, etc.
                    H Offline
                    H Offline
                    Hjunior
                    wrote on last edited by
                    #11

                    @SGaist Thanks for response.

                    Exposing the database is bad for you and good for some customers case, and this is not our issue with Qt. That is users' decision i think.

                    I see that there is no pre-built binaries but why there is no guide how to do that. Just search the internet and you will see there is no working guide. I like Qt since its the performant at any scale and want to use it with PostgreSql.

                    As you Qt guys, please write a guide for PostgreSql 9/10 with Ndk 21 and above if there is a way. Is it too difficult or not worthy?

                    1 Reply Last reply
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                    • SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by
                      #12

                      @Hjunior said in Build Postgresql plugin android Version 10:

                      As you Qt guys, please write a guide for PostgreSql 9/10 with Ndk 21 and above if there is a way. Is it too difficult or not worthy?

                      If by that you are saying I am working for the Qt Company, then you are wrong.

                      As for the original guide, it was provided by a user.

                      @Hjunior said in Build Postgresql plugin android Version 10:

                      Exposing the database is bad for you and good for some customers case, and this is not our issue with Qt. That is users' decision i think.

                      The customer might not be aware of all the security implications of exposing a database openly. Easy VS secure, do not chose easy. Your database will get broken into and pilfered.

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

                      H 1 Reply Last reply
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                      • SGaistS SGaist

                        @Hjunior said in Build Postgresql plugin android Version 10:

                        As you Qt guys, please write a guide for PostgreSql 9/10 with Ndk 21 and above if there is a way. Is it too difficult or not worthy?

                        If by that you are saying I am working for the Qt Company, then you are wrong.

                        As for the original guide, it was provided by a user.

                        @Hjunior said in Build Postgresql plugin android Version 10:

                        Exposing the database is bad for you and good for some customers case, and this is not our issue with Qt. That is users' decision i think.

                        The customer might not be aware of all the security implications of exposing a database openly. Easy VS secure, do not chose easy. Your database will get broken into and pilfered.

                        H Offline
                        H Offline
                        Hjunior
                        wrote on last edited by
                        #13

                        @SGaist Thanks.

                        Unfortunately we are at the starting point again. Where should i ask for this guide for the official Qt support.

                        jsulmJ 1 Reply Last reply
                        0
                        • H Hjunior

                          @SGaist Thanks.

                          Unfortunately we are at the starting point again. Where should i ask for this guide for the official Qt support.

                          jsulmJ Offline
                          jsulmJ Offline
                          jsulm
                          Lifetime Qt Champion
                          wrote on last edited by
                          #14

                          @Hjunior Do you have a commercial Qt license? If you have, then you can ask Qt Company directly for support.
                          Change requests can be filed here: https://bugreports.qt.io/secure/Dashboard.jspa

                          https://forum.qt.io/topic/113070/qt-code-of-conduct

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