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# Copyright 2011 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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#   1. Redistributions of source code must retain the above
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#      copyright notice, this list of conditions and the following
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#      disclaimer.
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#
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#   2. Redistributions in binary form must reproduce the above
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#      copyright notice, this list of conditions and the following
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#      disclaimer in the documentation and/or other materials
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#      provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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#
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import os
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from django.conf import settings
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from django.utils.translation import gettext_lazy as _
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from django.template import loader
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from django.http import HttpResponse
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from django.utils.translation import get_language
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from django.utils import simplejson as json
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from django.template.loader import render_to_string
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from django.core.urlresolvers import reverse
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from django.template import RequestContext
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from synnefo.util.version import get_component_version
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from snf_django.lib.astakos import get_user
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SYNNEFO_JS_LIB_VERSION = get_component_version('app')
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# api configuration
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COMPUTE_API_URL = getattr(settings, 'COMPUTE_API_URL', '/api/v1.1')
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# UI preferences settings
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TIMEOUT = getattr(settings, "TIMEOUT", 10000)
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UPDATE_INTERVAL = getattr(settings, "UI_UPDATE_INTERVAL", 5000)
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CHANGES_SINCE_ALIGNMENT = getattr(settings, "UI_CHANGES_SINCE_ALIGNMENT", 0)
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UPDATE_INTERVAL_INCREASE = getattr(settings, "UI_UPDATE_INTERVAL_INCREASE", 500)
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UPDATE_INTERVAL_INCREASE_AFTER_CALLS_COUNT = \
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    getattr(settings, "UI_UPDATE_INTERVAL_INCREASE_AFTER_CALLS_COUNT", 3)
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UPDATE_INTERVAL_FAST = getattr(settings, "UI_UPDATE_INTERVAL_FAST", 2500)
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UPDATE_INTERVAL_MAX = getattr(settings, "UI_UPDATE_INTERVAL_MAX", 10000)
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# predefined values settings
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VM_IMAGE_COMMON_METADATA = \
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    getattr(settings, "UI_VM_IMAGE_COMMON_METADATA", ["OS", "users"])
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SUGGESTED_FLAVORS_DEFAULT = {}
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SUGGESTED_FLAVORS = getattr(settings, "VM_CREATE_SUGGESTED_FLAVORS",
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                            SUGGESTED_FLAVORS_DEFAULT)
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SUGGESTED_ROLES_DEFAULT = ["Database server", "File server", "Mail server",
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                           "Web server", "Proxy"]
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SUGGESTED_ROLES = getattr(settings, "VM_CREATE_SUGGESTED_ROLES",
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                          SUGGESTED_ROLES_DEFAULT)
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IMAGE_ICONS = settings.IMAGE_ICONS
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IMAGE_DELETED_TITLE = \
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    getattr(settings, 'UI_IMAGE_DELETED_TITLE', '(deleted)')
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IMAGE_DELETED_SIZE_TITLE = \
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    getattr(settings, 'UI_IMAGE_DELETED_SIZE_TITLE', '(none)')
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SUPPORT_SSH_OS_LIST = getattr(settings, "UI_SUPPORT_SSH_OS_LIST",)
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OS_CREATED_USERS = getattr(settings, "UI_OS_DEFAULT_USER_MAP")
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LOGOUT_URL = getattr(settings, "UI_LOGOUT_URL", '/im/authenticate')
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LOGIN_URL = getattr(settings, "UI_LOGIN_URL", '/im/login')
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AUTH_COOKIE_NAME = getattr(settings, "UI_AUTH_COOKIE_NAME", 'synnefo_user')
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# UI behaviour settings
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DELAY_ON_BLUR = getattr(settings, "UI_DELAY_ON_BLUR", True)
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UPDATE_HIDDEN_VIEWS = getattr(settings, "UI_UPDATE_HIDDEN_VIEWS", False)
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HANDLE_WINDOW_EXCEPTIONS = \
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    getattr(settings, "UI_HANDLE_WINDOW_EXCEPTIONS", True)
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SKIP_TIMEOUTS = getattr(settings, "UI_SKIP_TIMEOUTS", 1)
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# Additional settings
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VM_NAME_TEMPLATE = getattr(settings, "VM_CREATE_NAME_TPL", "My {0} server")
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VM_HOSTNAME_FORMAT = getattr(settings, "UI_VM_HOSTNAME_FORMAT",
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                             'snf-%(id)s.vm.okeanos.grnet.gr')
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if isinstance(VM_HOSTNAME_FORMAT, basestring):
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    VM_HOSTNAME_FORMAT = VM_HOSTNAME_FORMAT % {'id': '{0}'}
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MAX_SSH_KEYS_PER_USER = getattr(settings, "USERDATA_MAX_SSH_KEYS_PER_USER")
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FLAVORS_DISK_TEMPLATES_INFO = \
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    getattr(settings, "UI_FLAVORS_DISK_TEMPLATES_INFO", {})
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SYSTEM_IMAGES_OWNERS = getattr(settings, "UI_SYSTEM_IMAGES_OWNERS", {})
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CUSTOM_IMAGE_HELP_URL = getattr(settings, "UI_CUSTOM_IMAGE_HELP_URL", None)
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# MEDIA PATHS
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UI_MEDIA_URL = \
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    getattr(settings, "UI_MEDIA_URL",
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            "%ssnf-%s/" % (settings.MEDIA_URL, SYNNEFO_JS_LIB_VERSION))
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UI_SYNNEFO_IMAGES_URL = \
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    getattr(settings,
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            "UI_SYNNEFO_IMAGES_URL", UI_MEDIA_URL + "images/")
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UI_SYNNEFO_CSS_URL = \
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    getattr(settings,
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            "UI_SYNNEFO_CSS_URL", UI_MEDIA_URL + "css/")
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UI_SYNNEFO_JS_URL = \
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    getattr(settings,
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            "UI_SYNNEFO_JS_URL", UI_MEDIA_URL + "js/")
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UI_SYNNEFO_JS_LIB_URL = \
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    getattr(settings,
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            "UI_SYNNEFO_JS_LIB_URL", UI_SYNNEFO_JS_URL + "lib/")
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UI_SYNNEFO_JS_WEB_URL = \
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    getattr(settings, "UI_SYNNEFO_JS_WEB_URL", UI_SYNNEFO_JS_URL + "ui/web/")
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# extensions
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ENABLE_GLANCE = getattr(settings, 'UI_ENABLE_GLANCE', True)
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GLANCE_API_URL = getattr(settings, 'UI_GLANCE_API_URL', '/glance')
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DIAGNOSTICS_UPDATE_INTERVAL = \
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    getattr(settings, 'UI_DIAGNOSTICS_UPDATE_INTERVAL', 2000)
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# network settings
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DEFAULT_NETWORK_TYPES = {'MAC_FILTERED': 'mac-filtering',
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                         'PHYSICAL_VLAN': 'physical-vlan'}
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NETWORK_TYPES = \
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    getattr(settings,
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            'UI_NETWORK_AVAILABLE_NETWORK_TYPES', DEFAULT_NETWORK_TYPES)
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DEFAULT_NETWORK_SUBNETS = ['10.0.0.0/24', '192.168.1.1/24']
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NETWORK_SUBNETS = \
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    getattr(settings,
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            'UI_NETWORK_AVAILABLE_SUBNETS', DEFAULT_NETWORK_SUBNETS)
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NETWORK_DUPLICATE_NICS = \
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    getattr(settings,
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            'UI_NETWORK_ALLOW_DUPLICATE_VM_NICS', False)
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NETWORK_STRICT_DESTROY = \
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    getattr(settings,
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            'UI_NETWORK_STRICT_DESTROY', False)
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NETWORK_ALLOW_MULTIPLE_DESTROY = \
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    getattr(settings,
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            'UI_NETWORK_ALLOW_MULTIPLE_DESTROY', False)
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AUTOMATIC_NETWORK_RANGE_FORMAT = getattr(settings,
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                                         'UI_AUTOMATIC_NETWORK_RANGE_FORMAT',
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                                         "192.168.%d.0/24").replace("%d", "{0}")
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GROUP_PUBLIC_NETWORKS = getattr(settings, 'UI_GROUP_PUBLIC_NETWORKS', True)
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GROUPED_PUBLIC_NETWORK_NAME = \
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    getattr(settings, 'UI_GROUPED_PUBLIC_NETWORK_NAME', 'Internet')
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USER_CATALOG_URL = getattr(settings, 'UI_USER_CATALOG_URL', '/user_catalogs')
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FEEDBACK_POST_URL = getattr(settings, 'UI_FEEDBACK_POST_URL', '/feedback')
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TRANSLATE_UUIDS = not getattr(settings, 'TRANSLATE_UUIDS', False)
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ACCOUNTS_API_URL = getattr(settings, 'UI_ACCOUNTS_API_URL', '/astakos/api')
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def template(name, request, context):
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    template_path = os.path.join(os.path.dirname(__file__), "templates/")
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    current_template = template_path + name + '.html'
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    t = loader.get_template(current_template)
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    media_context = {
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        'UI_MEDIA_URL': UI_MEDIA_URL,
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        'SYNNEFO_JS_URL': UI_SYNNEFO_JS_URL,
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        'SYNNEFO_JS_LIB_URL': UI_SYNNEFO_JS_LIB_URL,
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        'SYNNEFO_JS_WEB_URL': UI_SYNNEFO_JS_WEB_URL,
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        'SYNNEFO_IMAGES_URL': UI_SYNNEFO_IMAGES_URL,
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        'SYNNEFO_CSS_URL': UI_SYNNEFO_CSS_URL,
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        'SYNNEFO_JS_LIB_VERSION': SYNNEFO_JS_LIB_VERSION,
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        'DEBUG': settings.DEBUG
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    }
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    context.update(media_context)
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    return HttpResponse(t.render(RequestContext(request, context)))
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def home(request):
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    context = {'timeout': TIMEOUT,
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               'project': '+nefo',
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               'request': request,
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               'current_lang': get_language() or 'en',
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               'compute_api_url': json.dumps(COMPUTE_API_URL),
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               'user_catalog_url': json.dumps(USER_CATALOG_URL),
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               'feedback_post_url': json.dumps(FEEDBACK_POST_URL),
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               'accounts_api_url': json.dumps(ACCOUNTS_API_URL),
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               'translate_uuids': json.dumps(TRANSLATE_UUIDS),
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               # update interval settings
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               'update_interval': UPDATE_INTERVAL,
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               'update_interval_increase': UPDATE_INTERVAL_INCREASE,
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               'update_interval_increase_after_calls':
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                UPDATE_INTERVAL_INCREASE_AFTER_CALLS_COUNT,
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               'update_interval_fast': UPDATE_INTERVAL_FAST,
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               'update_interval_max': UPDATE_INTERVAL_MAX,
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               'changes_since_alignment': CHANGES_SINCE_ALIGNMENT,
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               'image_icons': IMAGE_ICONS,
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               'logout_redirect': LOGOUT_URL,
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               'login_redirect': LOGIN_URL,
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               'auth_cookie_name': AUTH_COOKIE_NAME,
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               'suggested_flavors': json.dumps(SUGGESTED_FLAVORS),
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               'suggested_roles': json.dumps(SUGGESTED_ROLES),
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               'vm_image_common_metadata': json.dumps(VM_IMAGE_COMMON_METADATA),
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               'synnefo_version': SYNNEFO_JS_LIB_VERSION,
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               'delay_on_blur': json.dumps(DELAY_ON_BLUR),
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               'update_hidden_views': json.dumps(UPDATE_HIDDEN_VIEWS),
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               'handle_window_exceptions': json.dumps(HANDLE_WINDOW_EXCEPTIONS),
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               'skip_timeouts': json.dumps(SKIP_TIMEOUTS),
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               'vm_name_template': json.dumps(VM_NAME_TEMPLATE),
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               'flavors_disk_templates_info':
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               json.dumps(FLAVORS_DISK_TEMPLATES_INFO),
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               'support_ssh_os_list': json.dumps(SUPPORT_SSH_OS_LIST),
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               'os_created_users': json.dumps(OS_CREATED_USERS),
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               'userdata_keys_limit': json.dumps(MAX_SSH_KEYS_PER_USER),
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               'use_glance': json.dumps(ENABLE_GLANCE),
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               'glance_api_url': json.dumps(GLANCE_API_URL),
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               'system_images_owners': json.dumps(SYSTEM_IMAGES_OWNERS),
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               'custom_image_help_url': CUSTOM_IMAGE_HELP_URL,
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               'image_deleted_title': json.dumps(IMAGE_DELETED_TITLE),
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               'image_deleted_size_title': json.dumps(IMAGE_DELETED_SIZE_TITLE),
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               'network_suggested_subnets': json.dumps(NETWORK_SUBNETS),
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               'network_available_types': json.dumps(NETWORK_TYPES),
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               'network_allow_duplicate_vm_nics':
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               json.dumps(NETWORK_DUPLICATE_NICS),
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               'network_strict_destroy': json.dumps(NETWORK_STRICT_DESTROY),
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               'network_allow_multiple_destroy':
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               json.dumps(NETWORK_ALLOW_MULTIPLE_DESTROY),
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               'automatic_network_range_format':
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               json.dumps(AUTOMATIC_NETWORK_RANGE_FORMAT),
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               'grouped_public_network_name':
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               json.dumps(GROUPED_PUBLIC_NETWORK_NAME),
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               'group_public_networks': json.dumps(GROUP_PUBLIC_NETWORKS),
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               'diagnostics_update_interval':
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               json.dumps(DIAGNOSTICS_UPDATE_INTERVAL),
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               'vm_hostname_format': json.dumps(VM_HOSTNAME_FORMAT)
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               }
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    return template('home', request, context)
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def machines_console(request):
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    host, port, password = ('', '', '')
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    host = request.GET.get('host', '')
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    port = request.GET.get('port', '')
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    password = request.GET.get('password', '')
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    machine = request.GET.get('machine', '')
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    host_ip = request.GET.get('host_ip', '')
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    host_ip_v6 = request.GET.get('host_ip_v6', '')
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    context = {'host': host, 'port': port, 'password': password,
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               'machine': machine, 'host_ip': host_ip, 'host_ip_v6': host_ip_v6}
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    return template('machines_console', request, context)
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def js_tests(request):
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    return template('tests', request, {})
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CONNECT_LINUX_LINUX_MESSAGE = \
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    _("""A direct connection to this machine can be established using the
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<a target="_blank" href="http://en.wikipedia.org/wiki/Secure_Shell">
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SSH Protocol</a>.
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To do so open a terminal and type the following at the prompt to connect
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to your machine:""")
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CONNECT_LINUX_WINDOWS_MESSAGE = \
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    _("""A direct connection to this machine can be established using
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<a target="_blank"
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href="http://en.wikipedia.org/wiki/Remote_Desktop_Services">
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Remote Desktop Service</a>.
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To do so, open the following file with an appropriate remote desktop client.""")
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CONNECT_LINUX_WINDOWS_SUBMESSAGE = \
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    _("""If you don't have a Remote Desktop client already installed,
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we suggest the use of <a target="_blank"
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href=
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"http://sourceforge.net/projects/tsclient/files/latest/download?source=files">
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tsclient</a>.<br /><span class="important">IMPORTANT: It may take up to 15
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minutes for your Windows VM to become available
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after its creation.</span>""")
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CONNECT_WINDOWS_LINUX_MESSAGE = \
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    _("""A direct connection to this machine can be established using the
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<a target="_blank"
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href="http://en.wikipedia.org/wiki/Secure_Shell">SSH Protocol</a>.
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Open an ssh client such as PuTTY and type the following:""")
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CONNECT_WINDOWS_LINUX_SUBMESSAGE = \
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    _("""If you do not have an ssh client already installed,
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<a target="_blank"
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href="http://the.earth.li/~sgtatham/putty/latest/x86/putty.exe">
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Download PuTTY</a>""")
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CONNECT_WINDOWS_WINDOWS_MESSAGE = \
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    _("""A direct connection to this machine can be
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established using Remote Desktop. Click on the following link, and if asked
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open it using "Remote Desktop Connection".
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<br /><span class="important">
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IMPORTANT: It may take up to 15 minutes for your Windows VM to become available
299
after its creation.</span>""")
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CONNECT_WINDOWS_WINDOWS_SUBMESSAGE = \
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    _("""Save this file to disk for future use.""")
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# info/subinfo for all os combinations
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#
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# [0] info gets displayed on top of the message box
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# [1] subinfo gets displayed on the bottom as extra info
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# provided to the user when needed
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CONNECT_PROMPT_MESSAGES = {
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    'linux': {
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        'linux': [CONNECT_LINUX_LINUX_MESSAGE, ""],
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        'windows': [CONNECT_LINUX_WINDOWS_MESSAGE,
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                    CONNECT_LINUX_WINDOWS_SUBMESSAGE],
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        'ssh_message': "ssh %(user)s@%(hostname)s"
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    },
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    'windows': {
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        'linux': [CONNECT_WINDOWS_LINUX_MESSAGE,
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                  CONNECT_WINDOWS_LINUX_SUBMESSAGE],
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        'windows': [CONNECT_WINDOWS_WINDOWS_MESSAGE,
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                    CONNECT_WINDOWS_WINDOWS_SUBMESSAGE],
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        'ssh_message': "%(user)s@%(hostname)s"
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    },
322
}
323

    
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APPEND_CONNECT_PROMPT_MESSAGES = \
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    getattr(settings, 'UI_CONNECT_PROMPT_MESSAGES', {})
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for k, v in APPEND_CONNECT_PROMPT_MESSAGES.iteritems():
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    CONNECT_PROMPT_MESSAGES[k].update(v)
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# retrieve domain prefix from settings
330
DOMAIN_PREFIX = getattr(settings, 'MACHINE_DOMAIN_PREFIX', getattr(settings,
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                        'BACKEND_PREFIX_ID', ""))
332

    
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# domain template string
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DOMAIN_TPL = "%s%%s" % DOMAIN_PREFIX
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def machines_connect(request):
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    ip_address = request.GET.get('ip_address', '')
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    hostname = request.GET.get('hostname', '')
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    operating_system = metadata_os = request.GET.get('os', '')
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    server_id = request.GET.get('srv', 0)
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    host_os = request.GET.get('host_os', 'Linux').lower()
343
    username = request.GET.get('username', None)
344
    domain = request.GET.get("domain", DOMAIN_TPL % int(server_id))
345

    
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    # guess host os
347
    if host_os != "windows":
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        host_os = 'linux'
349

    
350
    # guess username
351
    if not username:
352
        username = "root"
353

    
354
        if metadata_os.lower() in ['ubuntu', 'kubuntu', 'fedora']:
355
            username = "user"
356

    
357
        if metadata_os.lower() == "windows":
358
            username = "Administrator"
359

    
360
    # operating system provides ssh access
361
    ssh = False
362
    if operating_system != "windows":
363
        operating_system = "linux"
364
        ssh = True
365

    
366
    # rdp param is set, the user requested rdp file
367
    # check if we are on windows
368
    if operating_system == 'windows' and request.GET.get("rdp", False):
369

    
370
        # UI sent domain info (from vm metadata) use this
371
        # otherwise use our default snf-<vm_id> domain
372
        EXTRA_RDP_CONTENT = getattr(settings, 'UI_EXTRA_RDP_CONTENT', '')
373
        if callable(EXTRA_RDP_CONTENT):
374
            extra_rdp_content = EXTRA_RDP_CONTENT(server_id, ip_address,
375
                                                  hostname, username)
376
        else:
377
            extra_rdp_content = EXTRA_RDP_CONTENT % \
378
                {
379
                    'server_id': server_id,
380
                    'ip_address': ip_address,
381
                    'hostname': hostname,
382
                    'user': username
383
                }
384

    
385
        rdp_context = {
386
            'username': username,
387
            'domain': domain,
388
            'ip_address': ip_address,
389
            'hostname': hostname,
390
            'extra_content': extra_rdp_content
391
        }
392

    
393
        rdp_file_data = render_to_string("synnefo-windows.rdp", rdp_context)
394
        response = HttpResponse(rdp_file_data, mimetype='application/x-rdp')
395

    
396
        # proper filename, use server id and ip address
397
        filename = "%d-%s.rdp" % (int(server_id), hostname)
398
        response['Content-Disposition'] = 'attachment; filename=%s' % filename
399
    else:
400
        ssh_message = CONNECT_PROMPT_MESSAGES['linux'].get('ssh_message')
401
        if host_os == 'windows':
402
            ssh_message = CONNECT_PROMPT_MESSAGES['windows'].get('ssh_message')
403
        if callable(ssh_message):
404
            link_title = ssh_message(server_id, ip_address, hostname, username)
405
        else:
406
            link_title = ssh_message % {
407
                'server_id': server_id,
408
                'ip_address': ip_address,
409
                'hostname': hostname,
410
                'user': username
411
            }
412
        if (operating_system != "windows"):
413
            link_url = None
414

    
415
        else:
416
            link_title = _("Remote desktop to %s") % ip_address
417
            link_url = \
418
                "%s?ip_address=%s&os=%s&rdp=1&srv=%d&username=%s&domain=%s" \
419
                "&hostname=%s" % (
420
                    reverse("ui_machines_connect"), ip_address,
421
                    operating_system, int(server_id), username,
422
                    domain, hostname)
423

    
424
        # try to find a specific message
425
        try:
426
            connect_message = \
427
                CONNECT_PROMPT_MESSAGES[host_os][operating_system][0]
428
            subinfo = CONNECT_PROMPT_MESSAGES[host_os][operating_system][1]
429
        except KeyError:
430
            connect_message = \
431
                _("You are trying to connect from a %s "
432
                  "machine to a %s machine") % (host_os, operating_system)
433
            subinfo = ""
434

    
435
        response_object = {
436
            'ip': ip_address,
437
            'os': operating_system,
438
            'ssh': ssh,
439
            'info': unicode(connect_message),
440
            'subinfo': unicode(subinfo),
441
            'link': {'title': unicode(link_title), 'url': link_url}
442
        }
443
        response = \
444
            HttpResponse(json.dumps(response_object),
445
                         mimetype='application/json')  # no windows, no rdp
446

    
447
    return response