Synnefo

# Copyright 2011, 2012, 2013 GRNET S.A. All rights reserved.

#

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# 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.

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# 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,

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# 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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import os

from django.conf import settings

from django.utils.translation import gettext_lazy as _

from django.template import loader

from django.http import HttpResponse

from django.utils.translation import get_language

from django.utils import simplejson as json

from synnefo_branding.utils import render_to_string

from django.core.urlresolvers import reverse

from django.template import RequestContext

from synnefo.util.version import get_component_version

from synnefo.ui import settings as uisettings

SYNNEFO_JS_LIB_VERSION = get_component_version('app')

# UI preferences settings

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

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

CHANGES_SINCE_ALIGNMENT = getattr(settings, "UI_CHANGES_SINCE_ALIGNMENT", 0)

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, "UI_VM_IMAGE_COMMON_METADATA", ["OS", "users"])

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

IMAGE_DELETED_TITLE = \

    getattr(settings, 'UI_IMAGE_DELETED_TITLE', '(deleted)')

IMAGE_DELETED_SIZE_TITLE = \

    getattr(settings, 'UI_IMAGE_DELETED_SIZE_TITLE', '(none)')

SUPPORT_SSH_OS_LIST = getattr(settings, "UI_SUPPORT_SSH_OS_LIST",)

OS_CREATED_USERS = getattr(settings, "UI_OS_DEFAULT_USER_MAP")

UNKNOWN_OS = getattr(settings, "UI_UNKNOWN_OS", "unknown")

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

# never change window location. Helpful in development environments

AUTH_SKIP_REDIRECTS = getattr(settings, "UI_AUTH_SKIP_REDIRECTS", False)

# 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")

VM_HOSTNAME_FORMAT = getattr(settings, "UI_VM_HOSTNAME_FORMAT",

                             'snf-%(id)s.vm.synnefo.org')

if isinstance(VM_HOSTNAME_FORMAT, basestring):

    VM_HOSTNAME_FORMAT = VM_HOSTNAME_FORMAT % {'id': '{0}'}

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", {})

CUSTOM_IMAGE_HELP_URL = getattr(settings, "UI_CUSTOM_IMAGE_HELP_URL", None)

# 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)

DIAGNOSTICS_UPDATE_INTERVAL = \

    getattr(settings, 'UI_DIAGNOSTICS_UPDATE_INTERVAL', 2000)

# network settings

DEFAULT_NETWORK_TYPES = {'MAC_FILTERED': 'mac-filtering',

                         'PHYSICAL_VLAN': 'physical-vlan'}

NETWORK_TYPES = \

    getattr(settings,

            'UI_NETWORK_AVAILABLE_NETWORK_TYPES', DEFAULT_NETWORK_TYPES)

DEFAULT_NETWORK_SUBNETS = ['10.0.0.0/24', '192.168.1.1/24']

NETWORK_SUBNETS = \

    getattr(settings,

            'UI_NETWORK_AVAILABLE_SUBNETS', DEFAULT_NETWORK_SUBNETS)

NETWORK_DUPLICATE_NICS = \

    getattr(settings,

            'UI_NETWORK_ALLOW_DUPLICATE_VM_NICS', False)

NETWORK_STRICT_DESTROY = \

    getattr(settings,

            'UI_NETWORK_STRICT_DESTROY', False)

PRIVATE_NETWORKS_NIC_HOTPLUG = \

    getattr(settings,

            'UI_PRIVATE_NETWORK_NIC_HOTPLUG', False)

NETWORK_ALLOW_MULTIPLE_DESTROY = \

    getattr(settings,

            'UI_NETWORK_ALLOW_MULTIPLE_DESTROY', False)

AUTOMATIC_NETWORK_RANGE_FORMAT = getattr(settings,

                                         'UI_AUTOMATIC_NETWORK_RANGE_FORMAT',

                                         "192.168.%d.0/24").replace("%d",

                                                                    "{0}")

GROUP_PUBLIC_NETWORKS = getattr(settings, 'UI_GROUP_PUBLIC_NETWORKS', True)

GROUPED_PUBLIC_NETWORK_NAME = \

    getattr(settings, 'UI_GROUPED_PUBLIC_NETWORK_NAME', 'Internet')

def template(name, request, 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(RequestContext(request, context)))

def home(request):

    context = {

        'timeout': TIMEOUT,

        'project': '+nefo',

        'request': request,

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

        'compute_api_url': json.dumps(uisettings.COMPUTE_URL),

        'user_catalog_url': json.dumps(uisettings.USER_CATALOG_URL),

        'feedback_post_url': json.dumps(uisettings.FEEDBACK_URL),

        'accounts_api_url': json.dumps(uisettings.ACCOUNT_URL),

        'logout_redirect': json.dumps(uisettings.LOGOUT_REDIRECT),

        'login_redirect': json.dumps(uisettings.LOGIN_URL),

        'glance_api_url': json.dumps(uisettings.GLANCE_URL),

        'translate_uuids': json.dumps(True),

        # 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,

        'changes_since_alignment': CHANGES_SINCE_ALIGNMENT,

        'image_icons': IMAGE_ICONS,

        'auth_cookie_name': AUTH_COOKIE_NAME,

        'auth_skip_redirects': json.dumps(AUTH_SKIP_REDIRECTS),

        '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),

        'unknown_os': json.dumps(UNKNOWN_OS),

        'os_created_users': json.dumps(OS_CREATED_USERS),

        'userdata_keys_limit': json.dumps(MAX_SSH_KEYS_PER_USER),

        'use_glance': json.dumps(ENABLE_GLANCE),

        'system_images_owners': json.dumps(SYSTEM_IMAGES_OWNERS),

        'custom_image_help_url': CUSTOM_IMAGE_HELP_URL,

        'image_deleted_title': json.dumps(IMAGE_DELETED_TITLE),

        'image_deleted_size_title': json.dumps(IMAGE_DELETED_SIZE_TITLE),

        'network_suggested_subnets': json.dumps(NETWORK_SUBNETS),

        'network_available_types': json.dumps(NETWORK_TYPES),

        'network_allow_duplicate_vm_nics': json.dumps(NETWORK_DUPLICATE_NICS),

        'network_strict_destroy': json.dumps(NETWORK_STRICT_DESTROY),

        'network_allow_multiple_destroy':

        json.dumps(NETWORK_ALLOW_MULTIPLE_DESTROY),

        'automatic_network_range_format':

        json.dumps(AUTOMATIC_NETWORK_RANGE_FORMAT),

        'grouped_public_network_name': json.dumps(GROUPED_PUBLIC_NETWORK_NAME),

        'group_public_networks': json.dumps(GROUP_PUBLIC_NETWORKS),

        'private_networks_nic_hotplug':

        json.dumps(PRIVATE_NETWORKS_NIC_HOTPLUG),

        'diagnostics_update_interval': json.dumps(DIAGNOSTICS_UPDATE_INTERVAL),

        'vm_hostname_format': json.dumps(VM_HOSTNAME_FORMAT)

    }

    return template('home', request, 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', request, context)

def js_tests(request):

    return template('tests', request, {})

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 a Remote Desktop client already installed,

we suggest the use of <a target="_blank"

href=

"http://sourceforge.net/projects/tsclient/files/latest/download?source=files">

tsclient</a>.<br /><span class="important">IMPORTANT: It may take up to 15

minutes for your Windows VM to become available

after its creation.</span>""")

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".

<br /><span class="important">

IMPORTANT: It may take up to 15 minutes for your Windows VM to become available

after its creation.</span>""")

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],

        'ssh_message': "ssh %(user)s@%(hostname)s"

    },

    'windows': {

        'linux': [CONNECT_WINDOWS_LINUX_MESSAGE,

                  CONNECT_WINDOWS_LINUX_SUBMESSAGE],

        'windows': [CONNECT_WINDOWS_WINDOWS_MESSAGE,

                    CONNECT_WINDOWS_WINDOWS_SUBMESSAGE],

        'ssh_message': "%(user)s@%(hostname)s"

    },

}

APPEND_CONNECT_PROMPT_MESSAGES = \

    getattr(settings, 'UI_CONNECT_PROMPT_MESSAGES', {})

for k, v in APPEND_CONNECT_PROMPT_MESSAGES.iteritems():

    CONNECT_PROMPT_MESSAGES[k].update(v)

# 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', '')

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

    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):

        extra_rdp_content = ''

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

        # otherwise use our default snf-<vm_id> domain

        EXTRA_RDP_CONTENT = getattr(settings, 'UI_EXTRA_RDP_CONTENT', '')

        if callable(EXTRA_RDP_CONTENT):

            extra_rdp_content = EXTRA_RDP_CONTENT(server_id, ip_address,

                                                  hostname, username)

        else:

            if EXTRA_RDP_CONTENT:

                extra_rdp_content = EXTRA_RDP_CONTENT % \

                    {

                        'server_id': server_id,

                        'ip_address': ip_address,

                        'hostname': hostname,

                        'user': username

                    }

        rdp_context = {

            'username': username,

            'domain': domain,

            'ip_address': ip_address,

            'hostname': hostname,

            'extra_content': extra_rdp_content

        }

        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), hostname)

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

    else:

        ssh_message = CONNECT_PROMPT_MESSAGES['linux'].get('ssh_message')

        if host_os == 'windows':

            ssh_message = CONNECT_PROMPT_MESSAGES['windows'].get('ssh_message')

        if callable(ssh_message):

            link_title = ssh_message(server_id, ip_address, hostname, username)

        else:

            link_title = ssh_message % {

                'server_id': server_id,

                'ip_address': ip_address,

                'hostname': hostname,

                'user': username

            }

        if (operating_system != "windows"):

            link_url = None

        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" \

                "&hostname=%s" % (

                    reverse("ui_machines_connect"), ip_address,

                    operating_system, int(server_id), username,

                    domain, hostname)

        # 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