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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 Context, 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.shortcuts import render_to_response
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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.core.mail import send_mail
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from django.http import Http404
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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 synnefo.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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UPDATE_INTERVAL_INCREASE = getattr(settings, "UI_UPDATE_INTERVAL_INCREASE", 500)
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UPDATE_INTERVAL_INCREASE_AFTER_CALLS_COUNT = getattr(settings,
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                                "UI_UPDATE_INTERVAL_INCREASE_AFTER_CALLS_COUNT",
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                                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 = getattr(settings, "VM_IMAGE_COMMON_METADATA", ["OS"])
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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 = getattr(settings, 'UI_IMAGE_DELETED_TITLE',
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                            '(deleted image)')
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IMAGE_DELETED_SIZE_TITLE = getattr(settings, 'UI_IMAGE_DELETED_SIZE_TITLE',
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                            '(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 = 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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MAX_SSH_KEYS_PER_USER = getattr(settings, "USERDATA_MAX_SSH_KEYS_PER_USER")
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FLAVORS_DISK_TEMPLATES_INFO = getattr(settings, "UI_FLAVORS_DISK_TEMPLATES_INFO", {})
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SYSTEM_IMAGES_OWNERS = getattr(settings, "UI_SYSTEM_IMAGES_OWNERS", {})
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# MEDIA PATHS
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UI_MEDIA_URL = 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 = getattr(settings,
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                    "UI_SYNNEFO_IMAGES_URL", UI_MEDIA_URL + "images/")
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UI_SYNNEFO_CSS_URL = getattr(settings,
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                    "UI_SYNNEFO_CSS_URL", UI_MEDIA_URL + "css/")
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UI_SYNNEFO_JS_URL = getattr(settings,
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                    "UI_SYNNEFO_JS_URL", UI_MEDIA_URL + "js/")
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UI_SYNNEFO_JS_LIB_URL = 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 = getattr(settings,
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                    "UI_SYNNEFO_JS_WEB_URL",
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                    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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FEEDBACK_CONTACTS = getattr(settings, "FEEDBACK_CONTACTS", [])
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FEEDBACK_EMAIL_FROM = settings.FEEDBACK_EMAIL_FROM
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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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                # 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': 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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                # additional settings
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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': 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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               '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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               }
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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 = _("""A direct connection to this machine can be established using the <a target="_blank"
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href="http://en.wikipedia.org/wiki/Secure_Shell">SSH Protocol</a>.
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To do so open a terminal and type the following at the prompt to connect to your machine:""")
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CONNECT_LINUX_WINDOWS_MESSAGE = _("""A direct connection to this machine can be
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established using <a target="_blank" href="http://en.wikipedia.org/wiki/Remote_Desktop_Services">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 = _("""If you don't have one already
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installed, we suggest the use of <a target="_blank" href="http://sourceforge.net/projects/tsclient/files/tsclient/tsclient-unstable/tsclient-2.0.1.tar.bz2/download">tsclient</a>.""")
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CONNECT_WINDOWS_LINUX_MESSAGE = _("""A direct connection to this machine can be established using the <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 = _("""If you do not have an ssh client already installed,
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<a target="_blank" href="http://the.earth.li/~sgtatham/putty/latest/x86/putty.exe">Download PuTTY</a>""")
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CONNECT_WINDOWS_WINDOWS_MESSAGE = _("""A direct connection to this machine can be
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established using Remote Desktop. Click on the following link, and if asked open it using "Remote Desktop Connection" """)
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CONNECT_WINDOWS_WINDOWS_SUBMESSAGE = _("""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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        },
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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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        }
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    }
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# retrieve domain prefix from settings
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DOMAIN_PREFIX = getattr(settings, 'MACHINE_DOMAIN_PREFIX', getattr(settings,
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                        'BACKEND_PREFIX_ID', ""))
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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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    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()
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    username = request.GET.get('username', None)
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    domain = request.GET.get("domain", DOMAIN_TPL % int(server_id))
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    # guess host os
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    if host_os != "windows":
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        host_os = 'linux'
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    # guess username
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    if not username:
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        username = "root"
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        if metadata_os.lower() in ['ubuntu', 'kubuntu', 'fedora']:
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            username = "user"
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        if metadata_os.lower() == "windows":
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            username = "Administrator"
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    # operating system provides ssh access
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    ssh = False
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    if operating_system != "windows":
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        operating_system = "linux"
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        ssh = True
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    # rdp param is set, the user requested rdp file
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    # check if we are on windows
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    if operating_system == 'windows' and request.GET.get("rdp", False):
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        # UI sent domain info (from vm metadata) use this
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        # otherwise use our default snf-<vm_id> domain
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        rdp_context = {
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                'username': username,
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                'domain': domain,
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                'ip_address': ip_address
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        }
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        rdp_file_data = render_to_string("synnefo-windows.rdp", rdp_context)
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        response = HttpResponse(rdp_file_data, mimetype='application/x-rdp')
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        # proper filename, use server id and ip address
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        filename = "%d-%s.rdp" % (int(server_id), ip_address)
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        response['Content-Disposition'] = 'attachment; filename=%s' % filename
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    else:
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        link_title = _("Remote desktop to %s") % ip_address
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        link_url = "%s?ip_address=%s&os=%s&rdp=1&srv=%d&username=%s&domain=%s" % (
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                reverse("ui_machines_connect"), ip_address, operating_system,int(server_id), username, domain)
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        if (operating_system != "windows"):
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            link_title = "ssh %s@%s" % (username, ip_address)
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            link_url = None
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            if host_os == "windows":
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                link_title = "%s@%s" % (username, ip_address)
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        # try to find a specific message
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        try:
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            connect_message = CONNECT_PROMPT_MESSAGES[host_os][operating_system][0]
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            subinfo = CONNECT_PROMPT_MESSAGES[host_os][operating_system][1]
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        except KeyError:
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            connect_message = _("You are trying to connect from a %s "
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                                "machine to a %s machine") % (host_os, operating_system)
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            subinfo = ""
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        response_object = {
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                'ip': ip_address,
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                'os': operating_system,
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                'ssh': ssh,
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                'info': unicode(connect_message),
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                'subinfo': unicode(subinfo),
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                'link': {'title': unicode(link_title), 'url': link_url}
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            }
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        response = HttpResponse(json.dumps(response_object),
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                                mimetype='application/json')  #no windows, no rdp
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    return response
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def feedback_submit(request):
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    if not request.method == "POST":
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        raise Http404
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    # fill request object with astakos user information
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    get_user(request, settings.ASTAKOS_URL)
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    message = request.POST.get("feedback-msg")
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    data = request.POST.get("feedback-data")
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    # default to True (calls from error pages)
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    allow_data_send = request.POST.get("feedback-submit-data", True)
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    mail_subject = unicode(_("Feedback from synnefo application"))
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    mail_context = {'message': message, 'data': data,
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                    'allow_data_send': allow_data_send, 'request': request}
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    mail_content = render_to_string("feedback_mail.txt", mail_context)
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    send_mail(mail_subject, mail_content, FEEDBACK_EMAIL_FROM,
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            dict(FEEDBACK_CONTACTS).values(), fail_silently=False)
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    return HttpResponse('{"status":"send"}');
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