The iam is an isolated server-side component that provides authentication and authorization primitives. It's is completely decoupled from sequent-core, and it's ignorant of concepts like "election", "vote" or "sequent", even though its primarily developed with Agora voting use-case in mind. It can be used for other services, completely unrelated to elections.
An Authentication Event (or auth-event) is an important concept in the iam. Let's explain it with an example: imagine you're creating a single election, where you have a given census of electors, and you authenticate the electors sending a SMS code to their mobile phones. In that case, the election will have an associated event auth in an iam, configured with a census, configured to use the "SMS-code" authentication method, and the SMS provider credentials details needed to be able to send emails.
Another important entity in iam is an "User". Each auth-user can be uniquely referenced by the user-id. The users have some authorization to act over some objects using ACLs.
Authorization is provided using an Access Control Lists (ACLs) mechanism. Not every user can create a new auth-event, and not every-one can administrate an auth-event to configure its details. ACLs are stored in a table of the database, with an id, a permission string, an object id, an object type, and an user-id.
With ACLs, you can for example say "user 34 has 'create' permission of object type 'AuthEvent'" or "user 122 has 'admin' permission on object 33 of type 'Election'", for example. This information can be extracted in the form of an HMAC credential token that can be used by a third-party application to verify that the given user has permission to execute any kind of action to any kind of object.
-
Download from the git repository if you haven't got a copy
$ git clone https://github.com/sequentech/iam && cd iam -
Install package and its dependencies
$ sudo apt-get install libfreetype6-dev python3-dev libjpeg-dev zlib1g-dev libpq-dev $ mkvirtualenv -p $(which python3) myenv $ pip install -r requirements.txt -
Create postgres database:
$ sudo su postgres $ createuser -P iam $ psql -tAc "ALTER USER iam PASSWORD '<SOMEPASSWORD>';" -U postgres $ createdb -O iam iam -
Create scheme and load initial data. This command create username admin with password admin for initial data, and tlf "+34666666666" and code "admin123" for saas. Not very secure credentials for a production environment (on purpose - change it!) but works for a first go:
$ ./manage.py migrate $ ./manage.py loaddata initial # you can also use "saas" instead of "initial" -
Run:
$ ./manage.py runserver -
In production, for use celery, you need configure in setting the rabbitmq-server and execute:
$ ./manage.py syncdb $ ./manage.py celeryd
Optional. Added some plugin: Install plugins with pip or by other way Added plugins to PLUGINS in settings Enjoy of your plugin
You can run unit tests by having a local iam postgresql database, managed by the user
iam with password iam and then executing the runtests.sh script:
$ sudo su postgres
$ psql -tAc "CREATE USER iam WITH PASSWORD 'iam';" -U postgres
$ psql -tAc "ALTER USER iam CREATEDB;" -U postgres
- $ psql -tAc "CREATE DATABASE iam OWNER iam;" -U postgres $ exit (iam-env) ~/iam $ ./runtests.sh
Technically, iam should:
- allow migrations
- implement unit-tests for the API calls
Basic Database tables:
- AuthEvent
- id: autoinc int, identifies the event uniquely
- census: string (5), type of census: close(default) or open registration
- auth_method: string (255), unix-name of the auth method plugin used
- auth_method_config: json-string, json configuration string
- extra_fields: json-string
- status: string (15), status of auth-event: notstarted(default), started or stopped
- User
- id: string (255), random uuid, identifies the user uniquely
- event: auth-event associate
- metadata: json-string
- status: string (255): used to flag the user
- ACL
- id: autoinc int, identifies the event uniquely
- user_id: string (255) foreign key, to User.id, required
- perm: string (255) title of the permitted action. required
- object_type: string (255) type of object to which the user is granted permission to. required
- object_id: string (255) object related to which the user is granted permission to id (default=0) mean permission in all id
The iam is extensible using modules. The mudile can extend iam in different entry points defined in iam, providing:
- new authentication methods
- new pipeline
- in general, new API methods under /<module-name>
For create a new module: Development guide
Examples:
- email (required for a minimum version)
Provides authentication by sending a custom email for a set of users.
- sms
Provides authentication using an SMS code.
.....
Requires a session auth-token set in the AuthToken header. Requests a given permission to a given object type and object id (object id not required).
IMPORTANT NOTE: if not especific id, default_id is 0. if id is 0, the user have permission about all id
Request:
{
"user": "someone"
"object_type": "User",
"permission": "create",
"object_id": id
}
{
"permission": "create",
"object_type": "User",
"object_id": "deadbeef"
}
Response: If successful, returns a keyed-HMAC permission token:
{
"permission-token": "khmac:///sha-256;deadbeefdeadbeefdeadbeefdeadbeefdeadbeef/userid:User:deadbeef:create:timestamp"
}
Description: object_id is optinal paramameter, if not especific, default will be 0
If successful, return: { "perm": True } if not { "perm": False }
Required user with write permission for give permissions. Create an ACL entry.
IMPORTANT NOTE: if not especific id, default_id is 0. if id is 0, the user have permission about all id
Request:
{
"user": "someone"
"object_type": "User",
"permission": "create",
"object_id": id
}
Response: If everything is ok, it returns STATUS 200
Required user with write permission for delete permissions. Delete an ACL entry.
IMPORTANT NOTE: if not especific id, default_id is 0. if id is 0, the user have permission about all id
Request:
{
"user": "someone"
"object_type": "User",
"permission": "create",
}
If everything is ok, it returns STATUS 200
The requester tries to create a new auth-event. Requires a session auth-token set in the AuthToken header, with an user with permissions "superuser".
Valid Input example:
{
"auth_method": "sms",
"census": "open",
"config": {"msg": "Enter in __URL__ and put this code __CODE__"},
"extra_fields": [
{
"name": "name",
"type": "text",
"required": False,
"max": 2,
"max": 64,
"required_on_authentication": True
},
{
"name": "email",
"type": "text",
"required": True,
"min": 4,
"max": 255,
"required_on_authentication": True
},
{
"name": "dni",
"type": "text",
"required": True,
#"regex": "TODO",
"max": 9,
"max": 9,
"required_on_authentication": True
}
]
}
If everything is ok, it returns STATUS 200 with data:
{"id": 1}
Perms: object_type: 'AuthEvent', perm: 'edit', oject_id: auid
Description: changed the status of auth-event. Possibles: notstarted(default), started or stopped
Response: status 200
List auth events. Accepts filtering and paging. Not requires user with permission
Returns some neccesary data for register or login in an event. Not requires user with permission
Requires user with permission admin-auth-event over the given event.
Edit the event with id given. Requires user with permission admin-auth-event
over the given event.
Receives similar data to POST /auth-event. Requires user
with permission admin-auth-event over the given event.
Perms: object_type: 'AuthEvent', perm: 'edit', oject_id: auid
Description: Get census of auth-event id.
Perms: object_type: 'AuthEvent', perm: 'edit', oject_id: auid
Description: import census data by administrator. If user status == registered: When create users, the administrator will get perms 'edit' about new users. If user status == used: Not apply perms.
Request:
{
"field-validation": "disabled|enabled",
"census":
[
{
"tlf": "+34666666666",
"dni": "11111111H",
"email": "[email protected]",
"status": "registered"
},
{
"tlf": "+3377777777",
"dni": "22222222P",
"email": "[email protected]",
"status": "used"
},
..
]
}
Response: status 200 or status 400 if error
Perms: object_type: 'AuthEvent', perm: 'edit', oject_id: auid
Description: sends sms/emails (depending on auth method) to the census of an open election for authentication If template None, will use the dafult template. If user-ids None, will send code all census.
Request:
{
"user-ids": [],
"template": "template with __CODE__ and the link is__LINK__"
}
Response: status 200
Perms: none
Description: Provides authentication. Depending on the auth-method used, the input details needed may vary:
Request:
{
"tlf": "+34666666666",
"dni": "11111111H",
"email": "[email protected]",
}
Response: status 200 or status 400 if error
Depending on the authentication method, the authentication process might involve more steps and thus it might be delayed. For example, when using sms auth method, a valid answer will be an empty STATUS 200.
Perms: none
Description: Allows an user to verify if sms or email code and login. If #auid if 0, 'user-and-password method is used.
Request:
{
"dni": "11111111H",
"mail": "[email protected]",
"tlf": "+34666666666",
"code": "deadbeef"
}
Response: If authenticate is successful, it returns STATUS 200 with data:
{
"auth-token": "khmac:///sha-256;deadbeefdeadbeefdeadbeefdeadbeefdeadbeef/userid:timestamp"
}
Perms: You need be authenticated
Description: Get information of user, inclusive UserData.
Perms: object_type: 'UserData', perm: 'view', oject_id: id
Description: Get ids auth-event of request user
- Look at sequent-admin.py script in misc-tools
Copyright (C) 2015 Sequent Tech Inc and/or its subsidiary(-ies). Contact: [email protected]
This file is part of the iam module of the Sequent Tech project.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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External libraries This program distributes libraries from external sources. If you follow the compilation process you'll download these libraries and their respective licenses, which are compatible with our licensing.