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Guest Api (module for Omeka S)

New versions of this module and support for Omeka S version 3.0 and above are available on GitLab, which seems to respect users and privacy better than the previous repository.

Guest Api is a module for Omeka S that allows to manage the actions of the guest or any other user, provided by the module Guest, by the module Guest Role or any other module, by the api. This api allows in particular to register, to update the password, or to update its own profile and settings. So it does not replace the standard api (/api/users/#id), but adds some checks and features.

Installation

Install module Guest first.

Uncompress files in the module directory and rename module folder GuestApi. Then install it like any other Omeka module and follow the config instructions.

See general end user documentation for Installing a module.

Usage

First, specify the roles that can login by api in the config form of the module. Note that to allow any roles to login, in particular global admins, increase the access points to check for security.

The path /api/users/me is used for the user that is currently authenticated through the credentials arguments. This is a shortcut to /api/users/{id} for common actions, in particular to get the current user own data.

Other http methods are available to update the profile with the same path. For example to update (http method PATCH/POST):

  • email: /api/users/me?email=elisabeth.ii@example.com
  • name: /api/users/me?name=elisabeth_ii
  • password: /api/users/me?password=xxx&new_password=yyy

In all other cases, you should use the standard api (/api/users/#id).

Four specific paths are added:

  • /api/login The user can log in with a post to /api/login with data {"email":"elisabeth.ii@example.com","password"=""***"}. In return, a session token will be returned. All other actions can be done with them: /api/users/me?key_identity=xxx&key_credential=yyy.

    If the option to create a local session cookie is set, the user will be authenticated locally too, so it allows to log in from a third party webservice, for example if a user logs in inside a Drupal site, he can log in the Omeka site simultaneously. This third party login should be done via an ajax call because the session cookie should be set in the browser, not in the server, so you can’t simply call the endpoint from the third party server. In you third party ajax, the header Origin should be filled in the request; this is generally the case with common js libraries.

    When a local session cookie is wanted, it is recommended to add a list of sites that have the right to log in the config for security reasons.

  • /api/logout

  • /api/session-token A session token can be created for api access. It is reset each time the user login or logout. The api keys have no limited life in Omeka.

  • /api/register A visitor can register too, if allowed in the config. Register requires an email. Other params are optional: username, password, and site (id or slug, that may be required via the config).

Warning: The paths above may be changed in a future version to be more restful.

TODO

  • Normalize all api routes and json for rest api (register, login, logout, session-token).

Warning

Use it at your own risk.

It’s always recommended to backup your files and your databases and to check your archives regularly so you can roll back if needed.

Troubleshooting

See online issues on the module issues page.

License

This plugin is published under the CeCILL v2.1 license, compatible with GNU/GPL and approved by FSF and OSI.

In consideration of access to the source code and the rights to copy, modify and redistribute granted by the license, users are provided only with a limited warranty and the software’s author, the holder of the economic rights, and the successive licensors only have limited liability.

In this respect, the risks associated with loading, using, modifying and/or developing or reproducing the software by the user are brought to the user’s attention, given its Free Software status, which may make it complicated to use, with the result that its use is reserved for developers and experienced professionals having in-depth computer knowledge. Users are therefore encouraged to load and test the suitability of the software as regards their requirements in conditions enabling the security of their systems and/or data to be ensured and, more generally, to use and operate it in the same conditions of security. This Agreement may be freely reproduced and published, provided it is not altered, and that no provisions are either added or removed herefrom.

Copyright

  • Copyright Daniel Berthereau, 2019-2021 (see Daniel-KM on GitLab)

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Module for Omeka S to manage login, logout, and registering via an api for third party applications.

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