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Code Puzzle

Scheduled Pinned Locked Moved The Weird and The Wonderful
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  • S Sascha Lefevre

    Among all the toe-curling flaws in there, these are my two favorites: It's not even a singleton - it's a "noneton": Trying to access the Instance-property will cause a stack overflow due to recursion.. The List<QueryContainer> will be really, really short. Even when fixing the above flaw.. And the answer to the million dollar question: It's supposed to somehow (don't ask me) help with fixing code that is vulnerable to SQL-injection.

    If the brain were so simple we could understand it, we would be so simple we couldn't. — Lyall Watson

    Richard DeemingR Offline
    Richard DeemingR Offline
    Richard Deeming
    wrote on last edited by
    #17

    The new version[^] still doesn't fix the problem. I'm running out of different ways to explain to him why his approach isn't going to work. :sigh:


    "These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

    "These people looked deep within my soul and assigned me a number based on the order in which I joined" - Homer

    S OriginalGriffO 2 Replies Last reply
    0
    • Richard DeemingR Richard Deeming

      The new version[^] still doesn't fix the problem. I'm running out of different ways to explain to him why his approach isn't going to work. :sigh:


      "These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

      S Offline
      S Offline
      Sascha Lefevre
      wrote on last edited by
      #18

      He might be impervious to advice..

      If the brain were so simple we could understand it, we would be so simple we couldn't. — Lyall Watson

      1 Reply Last reply
      0
      • Richard DeemingR Richard Deeming

        The new version[^] still doesn't fix the problem. I'm running out of different ways to explain to him why his approach isn't going to work. :sigh:


        "These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

        OriginalGriffO Online
        OriginalGriffO Online
        OriginalGriff
        wrote on last edited by
        #19

        I know one remarkably effective way to explain to him: use SQL Injection to delete his database. And every time he puts it back, it goes again. It's cruel. It's nasty. It's probably illegal. But it's what his best mate will do, just to see the look on his face...

        Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...

        "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
        "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

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        • S Sascha Lefevre

          Among all the toe-curling flaws in there, these are my two favorites: It's not even a singleton - it's a "noneton": Trying to access the Instance-property will cause a stack overflow due to recursion.. The List<QueryContainer> will be really, really short. Even when fixing the above flaw.. And the answer to the million dollar question: It's supposed to somehow (don't ask me) help with fixing code that is vulnerable to SQL-injection.

          If the brain were so simple we could understand it, we would be so simple we couldn't. — Lyall Watson

          F Offline
          F Offline
          Freak30
          wrote on last edited by
          #20

          Sascha Lefèvre wrote:

          It's supposed to somehow (don't ask me) help with fixing code that is vulnerable to SQL-injection.

          After reading the actual questions, I don't think he is trying to fix the actual vulnerability with his code. Instead he may be trying to cheat the test system (by obfuscation) from detecting that there is an SQL injection vulnerability.

          The good thing about pessimism is, that you are always either right or pleasently surprised.

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          • S Sascha Lefevre

            How many compiler errors, potential NullReferenceExceptions, StackOverflowExceptions and whatnot can you spot in this presumably review-ready class? And the million dollar question: Can you guess the intended purpose?

            public class QueryContainer
            {
            private static List<QueryContainer> Container;
            private static QueryContainer instance;

            public static QueryContainer Instance
            {
                get
                {
                    if (Instance == null)
                        instance = new QueryContainer();
            
                    return instance;
                }
            }
            
            public int \_searchID;
            
            public int ID { get { return \_id; } }
            
            public string Query
            {
                get { return Container.Find(instance => instance.\_id == \_searchID).Query; }
                set { Container.Query = value; \_id =+ 1; }
            }
            
            private int \_id;
            private string \_query;
            
            private QueryContainer()
            { }
            

            }

            If the brain were so simple we could understand it, we would be so simple we couldn't. — Lyall Watson

            P Offline
            P Offline
            Power Puff Boy
            wrote on last edited by
            #21

            "But please - no programming questions."

            S 1 Reply Last reply
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            • P Power Puff Boy

              "But please - no programming questions."

              S Offline
              S Offline
              Sascha Lefevre
              wrote on last edited by
              #22

              As you didn't mark your post as a joke or put a smiley into it I have to assume you're being serious: But my post isn't a programming question.

              If the brain were so simple we could understand it, we would be so simple we couldn't. — Lyall Watson

              P 1 Reply Last reply
              0
              • S Sascha Lefevre

                How many compiler errors, potential NullReferenceExceptions, StackOverflowExceptions and whatnot can you spot in this presumably review-ready class? And the million dollar question: Can you guess the intended purpose?

                public class QueryContainer
                {
                private static List<QueryContainer> Container;
                private static QueryContainer instance;

                public static QueryContainer Instance
                {
                    get
                    {
                        if (Instance == null)
                            instance = new QueryContainer();
                
                        return instance;
                    }
                }
                
                public int \_searchID;
                
                public int ID { get { return \_id; } }
                
                public string Query
                {
                    get { return Container.Find(instance => instance.\_id == \_searchID).Query; }
                    set { Container.Query = value; \_id =+ 1; }
                }
                
                private int \_id;
                private string \_query;
                
                private QueryContainer()
                { }
                

                }

                If the brain were so simple we could understand it, we would be so simple we couldn't. — Lyall Watson

                G Offline
                G Offline
                Gary R Wheeler
                wrote on last edited by
                #23

                1. The Instance property get will overflow the stack due to recursion. 2. The Query property set and get will both throw NullReferenceException's, since Container is never initialized. 3. The code shouldn't even compile. The Query property set assigns value to Container.Query, but since Container is a List<>, it doesn't have a Query property. I'm going to completely ignore the code's stated purpose, which I don't think what they've provided has the faintest hope of meeting.

                Software Zen: delete this;

                1 Reply Last reply
                0
                • S Sascha Lefevre

                  As you didn't mark your post as a joke or put a smiley into it I have to assume you're being serious: But my post isn't a programming question.

                  If the brain were so simple we could understand it, we would be so simple we couldn't. — Lyall Watson

                  P Offline
                  P Offline
                  Power Puff Boy
                  wrote on last edited by
                  #24

                  Here's your smiley: :) :-D :laugh: ;) ;P :^) :( :sigh: :doh: :(( :zzz: :-\ :omg: :rolleyes: :-O :wtf: :mad::confused: X| :| :~:suss::cool: Pick the one you like best. Only one per member.

                  J S 2 Replies Last reply
                  0
                  • P Power Puff Boy

                    Here's your smiley: :) :-D :laugh: ;) ;P :^) :( :sigh: :doh: :(( :zzz: :-\ :omg: :rolleyes: :-O :wtf: :mad::confused: X| :| :~:suss::cool: Pick the one you like best. Only one per member.

                    J Offline
                    J Offline
                    Jorgen Andersson
                    wrote on last edited by
                    #25

                    You forgot a few: :baaaa!: :badger: :beer: :bob: :eek: :java: :jig: :vegemite:

                    Wrong is evil and must be defeated. - Jeff Ello

                    1 Reply Last reply
                    0
                    • P Power Puff Boy

                      Here's your smiley: :) :-D :laugh: ;) ;P :^) :( :sigh: :doh: :(( :zzz: :-\ :omg: :rolleyes: :-O :wtf: :mad::confused: X| :| :~:suss::cool: Pick the one you like best. Only one per member.

                      S Offline
                      S Offline
                      Sascha Lefevre
                      wrote on last edited by
                      #26

                      I'll take the second one, please. Can you wrap it as a gift? ;P

                      If the brain were so simple we could understand it, we would be so simple we couldn't. — Lyall Watson

                      P 1 Reply Last reply
                      0
                      • S Sascha Lefevre

                        I'll take the second one, please. Can you wrap it as a gift? ;P

                        If the brain were so simple we could understand it, we would be so simple we couldn't. — Lyall Watson

                        P Offline
                        P Offline
                        Power Puff Boy
                        wrote on last edited by
                        #27

                        ****** * :-D * ******

                        S 1 Reply Last reply
                        0
                        • P Power Puff Boy

                          ****** * :-D * ******

                          S Offline
                          S Offline
                          Sascha Lefevre
                          wrote on last edited by
                          #28

                          Very nice, will order again ;)

                          If the brain were so simple we could understand it, we would be so simple we couldn't. — Lyall Watson

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