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

# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

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

# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

# POSSIBILITY OF SUCH DAMAGE.

#

# The views and conclusions contained in the software and

# documentation are those of the authors and should not be

# interpreted as representing official policies, either expressed

# or implied, of GRNET S.A.

#

import os

from django.conf import settings

from django.utils.translation import gettext_lazy as _

from django.template import Context, loader

from django.http import HttpResponse

from django.utils.translation import get_language

from django.utils import simplejson as json

from django.shortcuts import render_to_response

from django.template.loader import render_to_string

from django.core.urlresolvers import reverse

from django.core.mail import send_mail

from django.http import Http404

from synnefo.util.version import get_component_version

SYNNEFO_JS_LIB_VERSION = get_component_version('app')

# api configuration

COMPUTE_API_URL = getattr(settings, 'COMPUTE_API_URL', '/api/v1.1')

# UI preferences settings

TIMEOUT = getattr(settings, "TIMEOUT", 10000)

UPDATE_INTERVAL = getattr(settings, "UI_UPDATE_INTERVAL", 5000)

UPDATE_INTERVAL_INCREASE = getattr(settings, "UI_UPDATE_INTERVAL_INCREASE", 500)

UPDATE_INTERVAL_INCREASE_AFTER_CALLS_COUNT = getattr(settings,

                                "UI_UPDATE_INTERVAL_INCREASE_AFTER_CALLS_COUNT",

                                3)

UPDATE_INTERVAL_FAST = getattr(settings, "UI_UPDATE_INTERVAL_FAST", 2500)

UPDATE_INTERVAL_MAX = getattr(settings, "UI_UPDATE_INTERVAL_MAX", 10000)

# predefined values settings

VM_IMAGE_COMMON_METADATA = getattr(settings, "VM_IMAGE_COMMON_METADATA", ["OS"])

SUGGESTED_FLAVORS_DEFAULT = {}

SUGGESTED_FLAVORS = getattr(settings, "VM_CREATE_SUGGESTED_FLAVORS",

                            SUGGESTED_FLAVORS_DEFAULT)

SUGGESTED_ROLES_DEFAULT = ["Database server", "File server", "Mail server",

                           "Web server", "Proxy"]

SUGGESTED_ROLES = getattr(settings, "VM_CREATE_SUGGESTED_ROLES",

                          SUGGESTED_ROLES_DEFAULT)

IMAGE_ICONS = settings.IMAGE_ICONS

SUPPORT_SSH_OS_LIST = getattr(settings, "UI_SUPPORT_SSH_OS_LIST",)

OS_CREATED_USERS = getattr(settings, "UI_OS_DEFAULT_USER_MAP")

LOGOUT_URL = getattr(settings, "UI_LOGOUT_URL", '/im/authenticate')

LOGIN_URL = getattr(settings, "UI_LOGIN_URL", '/im/login')

AUTH_COOKIE_NAME = getattr(settings, "UI_AUTH_COOKIE_NAME", 'synnefo_user')

# UI behaviour settings

DELAY_ON_BLUR = getattr(settings, "UI_DELAY_ON_BLUR", True)

UPDATE_HIDDEN_VIEWS = getattr(settings, "UI_UPDATE_HIDDEN_VIEWS", False)

HANDLE_WINDOW_EXCEPTIONS = getattr(settings, "UI_HANDLE_WINDOW_EXCEPTIONS", True)

SKIP_TIMEOUTS = getattr(settings, "UI_SKIP_TIMEOUTS", 1)

# Additional settings

VM_NAME_TEMPLATE = getattr(settings, "VM_CREATE_NAME_TPL", "My {0} server")

MAX_SSH_KEYS_PER_USER = getattr(settings, "USERDATA_MAX_SSH_KEYS_PER_USER")

FLAVORS_DISK_TEMPLATES_INFO = getattr(settings, "UI_FLAVORS_DISK_TEMPLATES_INFO", {})

SYSTEM_IMAGES_OWNERS = getattr(settings, "UI_SYSTEM_IMAGES_OWNERS", {})

# MEDIA PATHS

UI_MEDIA_URL = getattr(settings, "UI_MEDIA_URL",

                    "%ssnf-%s/" % (settings.MEDIA_URL, SYNNEFO_JS_LIB_VERSION))

UI_SYNNEFO_IMAGES_URL = getattr(settings,

                    "UI_SYNNEFO_IMAGES_URL", UI_MEDIA_URL + "images/")

UI_SYNNEFO_CSS_URL = getattr(settings,

                    "UI_SYNNEFO_CSS_URL", UI_MEDIA_URL + "css/")

UI_SYNNEFO_JS_URL = getattr(settings,

                    "UI_SYNNEFO_JS_URL", UI_MEDIA_URL + "js/")

UI_SYNNEFO_JS_LIB_URL = getattr(settings,

                    "UI_SYNNEFO_JS_LIB_URL", UI_SYNNEFO_JS_URL + "lib/")

UI_SYNNEFO_JS_WEB_URL = getattr(settings,

                    "UI_SYNNEFO_JS_WEB_URL",

                    UI_SYNNEFO_JS_URL + "ui/web/")

# extensions

ENABLE_GLANCE = getattr(settings, 'UI_ENABLE_GLANCE', True)

GLANCE_API_URL = getattr(settings, 'UI_GLANCE_API_URL', '/glance')

FEEDBACK_CONTACTS = getattr(settings, "FEEDBACK_CONTACTS", [])

FEEDBACK_EMAIL_FROM = settings.FEEDBACK_EMAIL_FROM

def template(name, context):

    template_path = os.path.join(os.path.dirname(__file__), "templates/")

    current_template = template_path + name + '.html'

    t = loader.get_template(current_template)

    media_context = {

       'UI_MEDIA_URL': UI_MEDIA_URL,

       'SYNNEFO_JS_URL': UI_SYNNEFO_JS_URL,

       'SYNNEFO_JS_LIB_URL': UI_SYNNEFO_JS_LIB_URL,

       'SYNNEFO_JS_WEB_URL': UI_SYNNEFO_JS_WEB_URL,

       'SYNNEFO_IMAGES_URL': UI_SYNNEFO_IMAGES_URL,

       'SYNNEFO_CSS_URL': UI_SYNNEFO_CSS_URL,

       'SYNNEFO_JS_LIB_VERSION': SYNNEFO_JS_LIB_VERSION,

       'DEBUG': settings.DEBUG

    }

    context.update(media_context)

    return HttpResponse(t.render(Context(context)))

def home(request):

    context = {'timeout': TIMEOUT,

               'project': '+nefo',

               'request': request,

               'current_lang': get_language() or 'en',

               'compute_api_url': json.dumps(COMPUTE_API_URL),

                # update interval settings

               'update_interval': UPDATE_INTERVAL,

               'update_interval_increase': UPDATE_INTERVAL_INCREASE,

               'update_interval_increase_after_calls': UPDATE_INTERVAL_INCREASE_AFTER_CALLS_COUNT,

               'update_interval_fast': UPDATE_INTERVAL_FAST,

               'update_interval_max': UPDATE_INTERVAL_MAX,

                # additional settings

               'image_icons': IMAGE_ICONS,

               'logout_redirect': LOGOUT_URL,

               'login_redirect': LOGIN_URL,

               'auth_cookie_name': AUTH_COOKIE_NAME,

               'suggested_flavors': json.dumps(SUGGESTED_FLAVORS),

               'suggested_roles': json.dumps(SUGGESTED_ROLES),

               'vm_image_common_metadata': json.dumps(VM_IMAGE_COMMON_METADATA),

               'synnefo_version': SYNNEFO_JS_LIB_VERSION,

               'delay_on_blur': json.dumps(DELAY_ON_BLUR),

               'update_hidden_views': json.dumps(UPDATE_HIDDEN_VIEWS),

               'handle_window_exceptions': json.dumps(HANDLE_WINDOW_EXCEPTIONS),

               'skip_timeouts': json.dumps(SKIP_TIMEOUTS),

               'vm_name_template': json.dumps(VM_NAME_TEMPLATE),

               'flavors_disk_templates_info': json.dumps(FLAVORS_DISK_TEMPLATES_INFO),

               'support_ssh_os_list': json.dumps(SUPPORT_SSH_OS_LIST),

               'os_created_users': json.dumps(OS_CREATED_USERS),

               'userdata_keys_limit': json.dumps(MAX_SSH_KEYS_PER_USER),

               'use_glance': json.dumps(ENABLE_GLANCE),

               'glance_api_url': json.dumps(GLANCE_API_URL),

               'system_images_owners': json.dumps(SYSTEM_IMAGES_OWNERS)

               }

    return template('home', context)

def machines_console(request):

    host, port, password = ('','','')

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

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

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

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

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

    host_ip_v6 = request.GET.get('host_ip_v6','')

    context = {'host': host, 'port': port, 'password': password,

               'machine': machine, 'host_ip': host_ip, 'host_ip_v6': host_ip_v6}

    return template('machines_console', context)

def js_tests(request):

    return template('tests', {})

CONNECT_LINUX_LINUX_MESSAGE = _("""A direct connection to this machine can be established using the <a target="_blank"

href="http://en.wikipedia.org/wiki/Secure_Shell">SSH Protocol</a>.

To do so open a terminal and type the following at the prompt to connect to your machine:""")

CONNECT_LINUX_WINDOWS_MESSAGE = _("""A direct connection to this machine can be

established using <a target="_blank" href="http://en.wikipedia.org/wiki/Remote_Desktop_Services">Remote Desktop Service</a>.

To do so, open the following file with an appropriate remote desktop client.""")

CONNECT_LINUX_WINDOWS_SUBMESSAGE = _("""If you don't have one already

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>.""")

CONNECT_WINDOWS_LINUX_MESSAGE = _("""A direct connection to this machine can be established using the <a target="_blank"

href="http://en.wikipedia.org/wiki/Secure_Shell">SSH Protocol</a>.

Open an ssh client such as PuTTY and type the following:""")

CONNECT_WINDOWS_LINUX_SUBMESSAGE = _("""If you do not have an ssh client already installed,

<a target="_blank" href="http://the.earth.li/~sgtatham/putty/latest/x86/putty.exe">Download PuTTY</a>""")

CONNECT_WINDOWS_WINDOWS_MESSAGE = _("""A direct connection to this machine can be

established using Remote Desktop. Click on the following link, and if asked open it using "Remote Desktop Connection" """)

CONNECT_WINDOWS_WINDOWS_SUBMESSAGE = _("""Save this file to disk for future use""")

# info/subinfo for all os combinations

#

# [0] info gets displayed on top of the message box

# [1] subinfo gets displayed on the bottom as extra info

# provided to the user when needed

CONNECT_PROMPT_MESSAGES = {

    'linux': {

            'linux': [CONNECT_LINUX_LINUX_MESSAGE, ""],

            'windows': [CONNECT_LINUX_WINDOWS_MESSAGE,

                        CONNECT_LINUX_WINDOWS_SUBMESSAGE]

        },

    'windows': {

            'linux': [CONNECT_WINDOWS_LINUX_MESSAGE,

                      CONNECT_WINDOWS_LINUX_SUBMESSAGE],

            'windows': [CONNECT_WINDOWS_WINDOWS_MESSAGE,

                        CONNECT_WINDOWS_WINDOWS_SUBMESSAGE]

        }

    }

# retrieve domain prefix from settings

DOMAIN_PREFIX = getattr(settings, 'MACHINE_DOMAIN_PREFIX', getattr(settings,

                        'BACKEND_PREFIX_ID', ""))

# domain template string

DOMAIN_TPL = "%s%%s" % DOMAIN_PREFIX

def machines_connect(request):

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

    operating_system = metadata_os = request.GET.get('os','')

    server_id = request.GET.get('srv', 0)

    host_os = request.GET.get('host_os','Linux').lower()

    username = request.GET.get('username', None)

    domain = request.GET.get("domain", DOMAIN_TPL % int(server_id))

    # guess host os

    if host_os != "windows":

        host_os = 'linux'

    # guess username

    if not username:

        username = "root"

        if metadata_os.lower() in ['ubuntu', 'kubuntu', 'fedora']:

            username = "user"

        if metadata_os.lower() == "windows":

            username = "Administrator"

    # operating system provides ssh access

    ssh = False

    if operating_system != "windows":

        operating_system = "linux"

        ssh = True

    # rdp param is set, the user requested rdp file

    # check if we are on windows

    if operating_system == 'windows' and request.GET.get("rdp", False):

        # UI sent domain info (from vm metadata) use this

        # otherwise use our default snf-<vm_id> domain

        rdp_context = {

                'username': username,

                'domain': domain,

                'ip_address': ip_address

        }

        rdp_file_data = render_to_string("synnefo-windows.rdp", rdp_context)

        response = HttpResponse(rdp_file_data, mimetype='application/x-rdp')

        # proper filename, use server id and ip address

        filename = "%d-%s.rdp" % (int(server_id), ip_address)

        response['Content-Disposition'] = 'attachment; filename=%s' % filename

    else:

        link_title = _("Remote desktop to %s") % ip_address

        link_url = "%s?ip_address=%s&os=%s&rdp=1&srv=%d&username=%s&domain=%s" % (

                reverse("machines-connect"), ip_address, operating_system,int(server_id), username, domain)

        if (operating_system != "windows"):

            link_title = "ssh %s@%s" % (username, ip_address)

            link_url = None

            if host_os == "windows":

                link_title = "%s@%s" % (username, ip_address)

        # try to find a specific message

        try:

            connect_message = CONNECT_PROMPT_MESSAGES[host_os][operating_system][0]

            subinfo = CONNECT_PROMPT_MESSAGES[host_os][operating_system][1]

        except KeyError:

            connect_message = _("You are trying to connect from a %s "

                                "machine to a %s machine") % (host_os, operating_system)

            subinfo = ""

        response_object = {

                'ip': ip_address,

                'os': operating_system,

                'ssh': ssh,

                'info': unicode(connect_message),

                'subinfo': unicode(subinfo),

                'link': {'title': unicode(link_title), 'url': link_url}

            }

        response = HttpResponse(json.dumps(response_object),

                                mimetype='application/json')  #no windows, no rdp

    return response

def feedback_submit(request):

    if not request.method == "POST":

        raise Http404

    message = request.POST.get("feedback-msg")

    data = request.POST.get("feedback-data")

    # default to True (calls from error pages)

    allow_data_send = request.POST.get("feedback-submit-data", True)

    mail_subject = unicode(_("Feedback from synnefo application"))

    mail_context = {'message': message, 'data': data,

                    'allow_data_send': allow_data_send, 'request': request}

    mail_content = render_to_string("feedback_mail.txt", mail_context)

    send_mail(mail_subject, mail_content, FEEDBACK_EMAIL_FROM,

            dict(FEEDBACK_CONTACTS).values(), fail_silently=False)

    return HttpResponse('{"status":"send"}');