Absinthe Graphql nested queries security












0















I've been reading that it is important to secure your applications with the a Maximum Query Depth. Meaning, to limit the number of "levels" that the query has. Example of a very deep query:



query IAmEvil {
author(id: "abc") {
posts {
author {
posts {
author {
posts {
author {
# that could go on as deep as the client wants!
}
}
}
}
}
}
}
}


How can I know the level of depth of my query? and ultimately not allowed queries with more that a depth of 4 to perform.
Can I get the full query to count the deepness manually? Or is their already an implementation?



This problem is also described here: https://www.howtographql.com/advanced/4-security/










share|improve this question



























    0















    I've been reading that it is important to secure your applications with the a Maximum Query Depth. Meaning, to limit the number of "levels" that the query has. Example of a very deep query:



    query IAmEvil {
    author(id: "abc") {
    posts {
    author {
    posts {
    author {
    posts {
    author {
    # that could go on as deep as the client wants!
    }
    }
    }
    }
    }
    }
    }
    }


    How can I know the level of depth of my query? and ultimately not allowed queries with more that a depth of 4 to perform.
    Can I get the full query to count the deepness manually? Or is their already an implementation?



    This problem is also described here: https://www.howtographql.com/advanced/4-security/










    share|improve this question

























      0












      0








      0








      I've been reading that it is important to secure your applications with the a Maximum Query Depth. Meaning, to limit the number of "levels" that the query has. Example of a very deep query:



      query IAmEvil {
      author(id: "abc") {
      posts {
      author {
      posts {
      author {
      posts {
      author {
      # that could go on as deep as the client wants!
      }
      }
      }
      }
      }
      }
      }
      }


      How can I know the level of depth of my query? and ultimately not allowed queries with more that a depth of 4 to perform.
      Can I get the full query to count the deepness manually? Or is their already an implementation?



      This problem is also described here: https://www.howtographql.com/advanced/4-security/










      share|improve this question














      I've been reading that it is important to secure your applications with the a Maximum Query Depth. Meaning, to limit the number of "levels" that the query has. Example of a very deep query:



      query IAmEvil {
      author(id: "abc") {
      posts {
      author {
      posts {
      author {
      posts {
      author {
      # that could go on as deep as the client wants!
      }
      }
      }
      }
      }
      }
      }
      }


      How can I know the level of depth of my query? and ultimately not allowed queries with more that a depth of 4 to perform.
      Can I get the full query to count the deepness manually? Or is their already an implementation?



      This problem is also described here: https://www.howtographql.com/advanced/4-security/







      graphql absinthe






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 13 '18 at 19:05









      Rocío AlvaradoRocío Alvarado

      225




      225
























          1 Answer
          1






          active

          oldest

          votes


















          1














          You can write a middleware to check the selection_depth and block it. Something like that:



          @impl Absinthe.Middleware
          def call(res, _config) do
          IO.inspect(selection_depth(res.definition.selections))
          res
          end

          def selection_depth(, depth), do: depth + 1
          def selection_depth(selections, depth \ 0),
          do: selections |> Enum.map(&selection_depth(&1.selections, depth + 1)) |> Enum.max()





          share|improve this answer























            Your Answer






            StackExchange.ifUsing("editor", function () {
            StackExchange.using("externalEditor", function () {
            StackExchange.using("snippets", function () {
            StackExchange.snippets.init();
            });
            });
            }, "code-snippets");

            StackExchange.ready(function() {
            var channelOptions = {
            tags: "".split(" "),
            id: "1"
            };
            initTagRenderer("".split(" "), "".split(" "), channelOptions);

            StackExchange.using("externalEditor", function() {
            // Have to fire editor after snippets, if snippets enabled
            if (StackExchange.settings.snippets.snippetsEnabled) {
            StackExchange.using("snippets", function() {
            createEditor();
            });
            }
            else {
            createEditor();
            }
            });

            function createEditor() {
            StackExchange.prepareEditor({
            heartbeatType: 'answer',
            autoActivateHeartbeat: false,
            convertImagesToLinks: true,
            noModals: true,
            showLowRepImageUploadWarning: true,
            reputationToPostImages: 10,
            bindNavPrevention: true,
            postfix: "",
            imageUploader: {
            brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
            contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
            allowUrls: true
            },
            onDemand: true,
            discardSelector: ".discard-answer"
            ,immediatelyShowMarkdownHelp:true
            });


            }
            });














            draft saved

            draft discarded


















            StackExchange.ready(
            function () {
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53287893%2fabsinthe-graphql-nested-queries-security%23new-answer', 'question_page');
            }
            );

            Post as a guest















            Required, but never shown

























            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            1














            You can write a middleware to check the selection_depth and block it. Something like that:



            @impl Absinthe.Middleware
            def call(res, _config) do
            IO.inspect(selection_depth(res.definition.selections))
            res
            end

            def selection_depth(, depth), do: depth + 1
            def selection_depth(selections, depth \ 0),
            do: selections |> Enum.map(&selection_depth(&1.selections, depth + 1)) |> Enum.max()





            share|improve this answer




























              1














              You can write a middleware to check the selection_depth and block it. Something like that:



              @impl Absinthe.Middleware
              def call(res, _config) do
              IO.inspect(selection_depth(res.definition.selections))
              res
              end

              def selection_depth(, depth), do: depth + 1
              def selection_depth(selections, depth \ 0),
              do: selections |> Enum.map(&selection_depth(&1.selections, depth + 1)) |> Enum.max()





              share|improve this answer


























                1












                1








                1







                You can write a middleware to check the selection_depth and block it. Something like that:



                @impl Absinthe.Middleware
                def call(res, _config) do
                IO.inspect(selection_depth(res.definition.selections))
                res
                end

                def selection_depth(, depth), do: depth + 1
                def selection_depth(selections, depth \ 0),
                do: selections |> Enum.map(&selection_depth(&1.selections, depth + 1)) |> Enum.max()





                share|improve this answer













                You can write a middleware to check the selection_depth and block it. Something like that:



                @impl Absinthe.Middleware
                def call(res, _config) do
                IO.inspect(selection_depth(res.definition.selections))
                res
                end

                def selection_depth(, depth), do: depth + 1
                def selection_depth(selections, depth \ 0),
                do: selections |> Enum.map(&selection_depth(&1.selections, depth + 1)) |> Enum.max()






                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 22 '18 at 20:25









                Marcos TapajósMarcos Tapajós

                1915




                1915






























                    draft saved

                    draft discarded




















































                    Thanks for contributing an answer to Stack Overflow!


                    • Please be sure to answer the question. Provide details and share your research!

                    But avoid



                    • Asking for help, clarification, or responding to other answers.

                    • Making statements based on opinion; back them up with references or personal experience.


                    To learn more, see our tips on writing great answers.




                    draft saved


                    draft discarded














                    StackExchange.ready(
                    function () {
                    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53287893%2fabsinthe-graphql-nested-queries-security%23new-answer', 'question_page');
                    }
                    );

                    Post as a guest















                    Required, but never shown





















































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown

































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown







                    Popular posts from this blog

                    Full-time equivalent

                    さくらももこ

                    13 indicted, 8 arrested in Calif. drug cartel investigation