Synnefo

# Copyright 2011 GRNET S.A. All rights reserved.

# 

# Redistribution and use in source and binary forms, with or

# without modification, are permitted provided that the following

# conditions are met:

# 

#   1. Redistributions of source code must retain the above

#      copyright notice, this list of conditions and the following

#      disclaimer.

# 

#   2. Redistributions in binary form must reproduce the above

#      copyright notice, this list of conditions and the following

#      disclaimer in the documentation and/or other materials

#      provided with the distribution.

# 

# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

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# The views and conclusions contained in the software and

# documentation are those of the authors and should not be

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from functools import wraps

from math import ceil

from django.conf import settings

from django.http import HttpResponse, HttpResponseRedirect

from django.utils.http import urlencode

from django.shortcuts import redirect

from django.template.loader import render_to_string

from models import User

def render_response(template, tab=None, status=200, **kwargs):

    if tab is None:

        tab = template.partition('_')[0]

    kwargs.setdefault('tab', tab)

    html = render_to_string(template, kwargs)

    return HttpResponse(html, status=status)

def requires_admin(func):

    @wraps(func)

    def wrapper(request, *args):

        if not settings.BYPASS_ADMIN_AUTH:

            if not request.user:

                next = urlencode({'next': request.build_absolute_uri()})

                login_uri = settings.LOGIN_URL + '?' + next

                return HttpResponseRedirect(login_uri)

            if not request.user_obj.is_admin:

                return HttpResponse('Forbidden', status=403)

        return func(request, *args)

    return wrapper

def index(request):

    stats = {}

    stats['users'] = User.objects.count()

    return render_response('index.html', tab='home', stats=stats)

@requires_admin

def admin(request):

    stats = {}

    stats['users'] = User.objects.count()

    return render_response('admin.html', tab='home', stats=stats)

@requires_admin

def users_list(request):

    users = User.objects.order_by('id')

    filter = request.GET.get('filter', '')

    if filter:

        if filter.startswith('-'):

            users = users.exclude(uniq__icontains=filter[1:])

        else:

            users = users.filter(uniq__icontains=filter)

    try:

        page = int(request.GET.get('page', 1))

    except ValueError:

        page = 1

    offset = max(0, page - 1) * settings.ADMIN_PAGE_LIMIT

    limit = offset + settings.ADMIN_PAGE_LIMIT

    npages = int(ceil(1.0 * users.count() / settings.ADMIN_PAGE_LIMIT))

    prev = page - 1 if page > 1 else None

    next = page + 1 if page < npages else None

    return render_response('users_list.html',

                            users=users[offset:limit],

                            filter=filter,

                            pages=range(1, npages + 1),

                            page=page,

                            prev=prev,

                            next=next)

@requires_admin

def users_create(request):

    if request.method == 'GET':

        return render_response('users_create.html')

    if request.method == 'POST':

        user = User()

        user.uniq = request.POST.get('uniq')

        user.realname = request.POST.get('realname')

        user.is_admin = True if request.POST.get('admin') else False

        user.affiliation = request.POST.get('affiliation')

        user.quota = int(request.POST.get('quota') or 0)

        user.auth_token = request.POST.get('auth_token')

        user.save()

        return redirect(users_info, user.id)

@requires_admin

def users_info(request, user_id):

    user = User.objects.get(id=user_id)

    return render_response('users_info.html', user=user)

@requires_admin

def users_modify(request, user_id):

    user = User.objects.get(id=user_id)

    user.uniq = request.POST.get('uniq')

    user.realname = request.POST.get('realname')

    user.is_admin = True if request.POST.get('admin') else False

    user.affiliation = request.POST.get('affiliation')

    user.quota = int(request.POST.get('quota') or 0)

    user.auth_token = request.POST.get('auth_token')

    user.save()

    return redirect(users_info, user.id)

@requires_admin

def users_delete(request, user_id):

    user = User.objects.get(id=user_id)

    user.delete()

    return redirect(users_list)