Automatic Filtering /tools/find endpoint

General
1

I need to ensure that whenever a user makes a POST request to /tools/find, the results are automatically filtered based on matching the user who initiated the request with the a metadata called “username” at the study level.

I tried using IncomingHttpRequestFilter to intercept /tools/find, but it didn’t work because IncomingHttpRequestFilter can only return true or false, which isn’t sufficient for this task.

Instead, I created a Lua function that calls the /tools/find endpoint and applies a query to filter the results based on the metadata. However, I’m facing a challenge: I cannot retrieve the username of the user who calls this function.

Do you have any ideas on how to achieve this? Your help would be greatly appreciated!

2

tools/find route is internal Orthanc implementation. I do not think you can overwrite that route, except that you change the source code and recompile it. Another way is to develop another route and wrap it around the /tools/find then you can filter what ever you want. But I am not sure it’s suitable for your usecase

3

Hi,

You can override tools/find in python to perform access control. There is a sample in this setup.

HTH,

Alain

4

Hi Christophe and Alain,
This seems to align well with the use case. Could you provide any guidance on how to set up a new endpoint or route?

5

Hi Khaled,

The code you need is around here

HTH

6

Hey Ben,
Thank you for pointing me in the right direction as usual! Your advice helped, and I successfully implemented a callback for /tools/find.

I noticed that ordering and filtering based on metadata were not available in my setup. To address this, I upgraded Orthanc by changing the base image to FROM jodogne/orthanc:1.12.6.

Unfortunately, after upgrading, the plugin fails to load with the following error:

“E0222 19:11:17.798813 MAIN SharedLibrary.cpp:99] dlopen(/usr/local/share/orthanc/plugins/libOrthancPython.so) failed: Error libpython3.7m.so.1.0: cannot open shared object file: No such file or directory”

It seems the plugin is looking for libpython3.7m.so.1.0, which is missing in the updated image.

Any more guidance? :slight_smile:

7

Hi Khaled

Glad to know it help, even though Alain did all the work and I just sent another URL to his work :laughing:

What is your OS? How have you installed orthanc-python? You might need to install the python-dev package for your specific configuration.

–B

8

Hi Kaled,

Note that, if you are using PostgreSQL, you need to switch to orthancteam/orthanc:25.1.1 since the jodogne/orthanc images are still using an older version of the PG plugin.

If you want to use python, you need to use either the jodogne/orthanc-python image or orthancteam/orthanc images.

HTH,

Alain

1 Like
9

Many thanks, @alainmazy and @benjamin.golinvaux (the best team ever)!
Apologies for not being available to provide feedback in the past days.
I will try again today and keep you posted.

1 Like