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path: root/src/web/views/api/v3/common.py
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from flask import request
from flask.ext.login import current_user
from flask.ext.restless import ProcessingException
from werkzeug.exceptions import NotFound
from web.controllers import ArticleController, UserController
from web.views.common import login_user_bundle


url_prefix = '/api/v3'


def is_authorized_to_modify(user, obj):
    return user.id == obj.user_id

def auth_func(*args, **kw):
    if request.authorization:
        ucontr = UserController()
        try:
            user = ucontr.get(nickname=request.authorization.username)
        except NotFound:
            raise ProcessingException("Couldn't authenticate your user",
                                        code=401)
        if not ucontr.check_password(user, request.authorization.password):
            raise ProcessingException("Couldn't authenticate your user",
                                        code=401)
        if not user.is_active:
            raise ProcessingException("User is desactivated", code=401)
        login_user_bundle(user)
    if not current_user.is_authenticated:
        raise ProcessingException(description='Not authenticated!', code=401)

def get_single_preprocessor(instance_id=None, **kw):
    # Check if the user is authorized to modify the specified
    # instance of the model.
    contr = ArticleController(current_user.id)
    article = contr.get(id=instance_id)
    if not is_authorized_to_modify(current_user, article):
        raise ProcessingException(description='Not Authorized',
                                  code=401)

def get_many_preprocessor(search_params=None, **kw):
    """Accepts a single argument, `search_params`, which is a dictionary
    containing the search parameters for the request.

    """
    filt = dict(name="user_id",
                op="eq",
                val=current_user.id)

    # Check if there are any filters there already.
    if "filters" not in search_params:
      search_params["filters"] = []

    search_params["filters"].append(filt)
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