示例#1
0
class YuLinkStats(object):
    """
    Class to represent the link specific stats
    """
    def __init__(self, shorthash):
        self._db = YuDatabase()
        if shorthash is not None and self._db is not None:
            link_details = self._db.get_link_details(shorthash)
            if link_details:
                if link_details[5]:
                    self.creation_time = '%s (UTC)' % (link_details[5])
                else:
                    self.creation_time = 'Unknown'
                self.link_address = link_details[3]
                self.first_redirect = self._db.get_date_of_first_entry(
                    'hashredirect', shorthash)[0]
                self.last_redirect = self._db.get_date_of_last_entry(
                    'hashredirect', shorthash)[0]
                self.number_of_redirects = self._db.get_statistics_for_hash(
                    shorthash)
                return
        self.link_address = None
        self.creation_time = None
        self.first_redirect = None
        self.last_redirect = None
        self.number_of_redirects = None
示例#2
0
文件: monitor.py 项目: frlan/yaturl
    def get_connection_pool(self):
        """
        Return the status of the SQLAlchemy connection pool

        | **return** status (str)
        """
        connection_pool = YuDatabase.get_connection_pool()
        return connection_pool.status() if connection_pool else None
示例#3
0
 def __init__(self):
     self.create_time_stamp = None
     self.links_today = None
     self.links_this_week = None
     self.links_this_month = None
     self.links_this_year = None
     self.links_all = None
     self.redirect_today = None
     self.redirect_this_week = None
     self.redirect_this_month = None
     self.redirect_this_year = None
     self.redirect_per_week = None
     self.redirect_all = None
     self.date_of_first_redirect = None
     self.date_of_first_link = None
     self._db = YuDatabase()
     self._update()
示例#4
0
    def get_connection_pool(self):
        """
        Return the status of the SQLAlchemy connection pool

        | **return** status (str)
        """
        connection_pool = YuDatabase.get_connection_pool()
        return connection_pool.status() if connection_pool else None
示例#5
0
文件: stats.py 项目: frlan/yaturl
class YuLinkStats(object):
    """
    Class to represent the link specific stats
    """
    def __init__(self, shorthash):
        self._db = YuDatabase()
        if shorthash is not None and self._db is not None:
            link_details = self._db.get_link_details(shorthash)
            if link_details:
                if link_details[5]:
                    self.creation_time = '%s (UTC)' % (link_details[5])
                else:
                    self.creation_time = 'Unknown'
                self.link_address = link_details[3]
                self.first_redirect = self._db.get_date_of_first_entry('hashredirect', shorthash)[0]
                self.last_redirect = self._db.get_date_of_last_entry('hashredirect', shorthash)[0]
                self.number_of_redirects = self._db.get_statistics_for_hash(shorthash)
                return
        self.link_address = None
        self.creation_time = None
        self.first_redirect = None
        self.last_redirect = None
        self.number_of_redirects = None
示例#6
0
文件: stats.py 项目: frlan/yaturl
 def __init__(self):
     self.create_time_stamp = None
     self.links_today = None
     self.links_this_week = None
     self.links_this_month = None
     self.links_this_year = None
     self.links_all = None
     self.redirect_today = None
     self.redirect_this_week = None
     self.redirect_this_month = None
     self.redirect_this_year = None
     self.redirect_per_week = None
     self.redirect_all = None
     self.date_of_first_redirect = None
     self.date_of_first_link = None
     self._db = YuDatabase()
     self._update()
示例#7
0
 def __init__(self, request, client_address, server):
     self._db = YuDatabase()
     self._logger = get_logger()
     self._header_only = False
     BaseHTTPRequestHandler.__init__(self, request, client_address, server)
示例#8
0
class YuRequestHandler(BaseHTTPRequestHandler):
    """
    Custom request handler to process HEAD, GET and POST requests
    """

    server_version = '%s/%s' % (SERVER_NAME, SERVER_VERSION)

    #----------------------------------------------------------------------
    def __init__(self, request, client_address, server):
        self._db = YuDatabase()
        self._logger = get_logger()
        self._header_only = False
        BaseHTTPRequestHandler.__init__(self, request, client_address, server)

    #----------------------------------------------------------------------
    def __del__(self):
        self._db.close()

    #----------------------------------------------------------------------
    def _get_config_value(self, section, key):
        """
        Convenience function to retrieve config settings

        | **param** section (str)
        | **param** key (str)
        | **return** value (str)
        """
        return config.get(section, key)

    #----------------------------------------------------------------------
    def _get_config_template(self, key):
        """
        Convenience function to retrieve a template filename from the config

        | **param** key (str)
        | **return** value (str)
        """
        tmp_path = self._get_config_value('templates', 'path') + key
        return tmp_path

    #----------------------------------------------------------------------
    def address_string(self):
        """
        Return the client address formatted for logging.
        Only lookup the hostname if really requested.

        | **return** hostname (str)
        """

        if self.server.log_ip_activated:
            host = self.client_address[0]
        else:
            host = '127.0.0.1'
        if self.server.resolve_clients:
            return socket.getfqdn(host)
        else:
            return host

    #----------------------------------------------------------------------
    def log_request(self, code='-', size='-'):
        """
        Overwrite the default log_request() method to make it a no-op.
        We call the original method ourselves to pass also the response size.
        """
        pass

    #----------------------------------------------------------------------
    def send_response(self, code, message=None, size='-'):
        """
        Send the response header and log the response code.

        Also send two standard headers with the server software
        version and the current date.

        | **param** code (int)
        | **param** message (str)
        | **param** size (str)
        """
        BaseHTTPRequestHandler.send_response(self, code, message)
        BaseHTTPRequestHandler.log_request(self, code, size)

    #----------------------------------------------------------------------
    def log_message(self, msg_format, *args):
        """
        Overwrite the default log_message() method which prints for
        some reason to stderr which we don't want.  Instead, we use a
        logger.

        | **param** msg_format (str)
        | **return** args (seq of mixed)
        """
        try:
            useragent = self.headers['User-Agent']
        except KeyError:
            useragent = '-'
        try:
            referrer = self.headers['Referer']
        except KeyError:
            referrer = '-'

        values = dict(client=self.address_string(),
                      identity='-',
                      user='******',
                      timestr=time.strftime('%d/%a/%Y:%H:%M:%S %z'),
                      request=msg_format % args,
                      referrer='"%s"' % referrer,
                      useragent='"%s"' % useragent)
        msg_format = '%(client)s %(identity)s %(user)s [%(timestr)s] %(request)s %(referrer)s %(useragent)s'
        access_logger = get_access_logger()
        access_logger.info(msg_format % values)

    #----------------------------------------------------------------------
    def _send_head(self, text, code):
        """
        Send common headers

        | **param** text (str)
        | **param** code (int)
        """
        size = len(text)
        self.send_response(code, None, size)
        # Trying to figure out what we are going to send out.
        # Maybe this could be improved a bit further but should do
        # it for now.
        extension_start = self.path.rfind('.')
        extension = self.path[extension_start:]
        try:
            self.send_header('Content-Type', CONTENT_TYPES[extension])
        except KeyError:
            self.send_header('Content-Type', 'text/html')
        self.send_header("Content-Length", size)
        self.end_headers()

    #-------------------------------------------------------------------
    def _send_homepage(self, message=''):
        """
        Sends the default startpage.

        |**param** message (str) Optional message that should appear on startpage
        """
        template_filename = self._get_config_template('homepage')
        text = read_template(template_filename,
                             title=SERVER_NAME,
                             header=SERVER_NAME,
                             msg=message)
        self._send_response(text, 200)

    #-------------------------------------------------------------------
    def _send_blocked_page(self, reason):
        """
        Send a block page which tells the user that the URL has been
        blocked for some reason.

        | **param** reason Reason, why page has been blocked (str)
        """
        template_filename = self._get_config_template('blocked')
        text = read_template(template_filename,
                             title=SERVER_NAME,
                             header=SERVER_NAME,
                             comment=reason)
        self._send_response(text, 200)

    #-------------------------------------------------------------------
    def _send_return_page(self, shorthash):
        """
        Send the result page for a new created short URL.

        | **param** shorthash - new shorthash for URL
        """
        template_filename = self._get_config_template('return')
        if shorthash == '1337':
            messagetext = '<p>Hey, you are 1337!</p>'
        else:
            messagetext = ''
        text = read_template(template_filename,
                             message=messagetext,
                             title='%s - Short URL Result' % SERVER_NAME,
                             header='new URL',
                             path=shorthash,
                             hostname=self.server.hostname)
        self._send_response(text, 200)

    #-------------------------------------------------------------------
    def _send_response(self, content, code=200):
        """
        This function is to be intended to consolidate the
        sending responses to on function.
        TODO: Sync with self.send_response() function which is
              already talking with HTTPServer-interface.

        | **param** content - text of page (str)
        | **param** code - response code e.g. 404 (int)
        """
        if content:
            self._send_head(content, code)
            if not self._header_only:
                try:
                    self.wfile.write(content)
                except socket.error:
                    # clients like to stop reading after they got a 404
                    pass
        else:
            self._send_internal_server_error()

    #-------------------------------------------------------------------
    def _send_301(self, new_url):
        """
        Send HTTP status code 301

        | **param** new_url (str)
        """
        try:
            self.send_response(301)
            self.send_header('Location', new_url)
            self.send_header('Content-type', 'text/html')
            self.end_headers()
        except UnicodeEncodeError:
            self._send_internal_server_error()

    #----------------------------------------------------------------------
    def _send_404(self):
        """
        Send HTTP status code 404
        """
        template_filename = self._get_config_template('404')
        text = read_template(template_filename,
                             title='%s - 404' % SERVER_NAME,
                             header='404 &mdash; Page not found',
                             URL="Nothing")
        self._send_response(text, 404)

    #----------------------------------------------------------------------
    def _send_internal_server_error(self):
        """
        Send HTTP status code 500
        """
        template_filename = self._get_config_template('500')
        text = read_template(template_filename,
                             title='%s - Internal Error' % SERVER_NAME,
                             header='Internal error')
        if not text:
            # fallback to hard-coded template
            text = TEMPLATE_500
        self._send_head(text, 500)
        if not self._header_only:
            self.wfile.write(text)

    #----------------------------------------------------------------------
    def _send_database_problem(self):
        """
        Send HTTP status code 500 due to a database connection error

        | **param** header_only (bool)
        """
        template_filename = self._get_config_template('databaseerror')
        text = read_template(template_filename,
                             title='%s - Datebase error' % SERVER_NAME,
                             header='Database error')
        if not text:
            self._send_internal_server_error()
            return
        self._send_head(text, 500)
        if not self._header_only:
            self.wfile.write(text)

    #----------------------------------------------------------------------
    def _send_mail(self, subject, content, email):
        """
        Send a mail

        | **param** subject (str)
        | **param** content (str)
        | **param** email (str)
        """
        msg = MIMEText(content, 'plain', 'utf-8')

        msg['Subject'] = '%s' % (subject)
        msg['From'] = email
        msg['To'] = self._get_config_value('email', 'toemail')

        try:
            smtp_conn = SMTP('localhost')
            smtp_conn.sendmail(msg['From'], [msg['To']], msg.as_string())
            smtp_conn.quit()
        except (socket.error, SMTPException), e:
            self._logger.error('Mail could not be sent (%s)' % e)
            return False
        return True
示例#9
0
文件: stats.py 项目: frlan/yaturl
class YuStats(object):
    """
    A class to represent some statistic data for yaturl
    """
    def __init__(self):
        self.create_time_stamp = None
        self.links_today = None
        self.links_this_week = None
        self.links_this_month = None
        self.links_this_year = None
        self.links_all = None
        self.redirect_today = None
        self.redirect_this_week = None
        self.redirect_this_month = None
        self.redirect_this_year = None
        self.redirect_per_week = None
        self.redirect_all = None
        self.date_of_first_redirect = None
        self.date_of_first_link = None
        self._db = YuDatabase()
        self._update()

    #-------------------------------------------------------------------
    def _update(self):
        """
        Updates the values of the stats object.
        """
        self.create_time_stamp = time()
        self.links_today = self._get_links_from_db_today()
        self.links_this_week = self._get_links_from_db_this_week()
        self.links_this_month = self._get_links_from_db_this_month()
        self.links_this_year = self._get_links_from_db_this_year()
        self.links_all = self._get_links_from_db_all()
        self.redirect_today = self._get_redirects_today()
        self.redirect_this_week = self._get_redirects_this_week()
        self.redirect_this_month = self._get_redirects_this_month()
        self.redirect_this_year = self._get_redirects_this_year()
        # self.redirect_per_week = self._get_redirects_per_week()
        self.redirect_all = self._get_redirects_all()
        self.date_of_first_redirect = self._get_date_of_first_redirect()
        self.date_of_first_link = self._get_date_of_first_link_entry()

    #-------------------------------------------------------------------
    def _get_links_from_db_today(self):
        """
        Collecting statistics about links added today from database.
        """
        try:
            return self._db.get_statistics_for_general_links('today')[1]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_links_from_db_this_week(self):
        """
        Collecting statistics about links added this week from database.
        """
        try:
            return self._db.get_statistics_for_general_links('this_week')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_links_from_db_this_month(self):
        """
        Collecting statistics about links added this month from database.
        """
        try:
            return self._db.get_statistics_for_general_links('this_month')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_links_from_db_this_year(self):
        """
        Collecting statistics about links added this year from database.
        """
        try:
            return self._db.get_statistics_for_general_links('this_year')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_links_from_db_all(self):
        """
        Collecting statistics about links added all time from database.
        """
        try:
            return self._db.get_statistics_for_general_links('all')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_redirects_today(self):
        """
        Collecting statistics about done redirects of today from database.
        """
        try:
            return self._db.get_statistics_for_general_redirects('today')[1]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_redirects_this_week(self):
        """
        Collecting statistics about done redirects of this week from database.
        """
        try:
            return self._db.get_statistics_for_general_redirects('this_week')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_redirects_this_month(self):
        """
        Collecting statistics about done redirects of this month from database.
        """
        try:
            return self._db.get_statistics_for_general_redirects('this_month')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_redirects_this_year(self):
        """
        Collecting statistics about done redirects of this year from database.
        """
        try:
            return self._db.get_statistics_for_general_redirects('this_year')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_redirects_per_week(self):
        """
        Collecting statistics about done redirects groupd by week and year
        from database.
        """
        try:
            return self._db.get_statistics_for_general_redirects('per_week')
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_redirects_all(self):
        """
        Collecting statistics about done redirects ever from database.
        """
        try:
            return self._db.get_statistics_for_general_redirects('all')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_date_of_first_redirect(self):
        """
        Get timestamp of first redirect logged from database.
        """
        try:
            return self._db.get_date_of_first_entry('redirect')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_date_of_first_link_entry(self):
        """
        Get timestamp of time of first inserted link from database.
        """
        try:
            return self._db.get_date_of_first_entry('link')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def update_stats(self):
        """
        Public method to perform update on stats date
        """
        self._update()
示例#10
0
class YuStats(object):
    """
    A class to represent some statistic data for yaturl
    """
    def __init__(self):
        self.create_time_stamp = None
        self.links_today = None
        self.links_this_week = None
        self.links_this_month = None
        self.links_this_year = None
        self.links_all = None
        self.redirect_today = None
        self.redirect_this_week = None
        self.redirect_this_month = None
        self.redirect_this_year = None
        self.redirect_per_week = None
        self.redirect_all = None
        self.date_of_first_redirect = None
        self.date_of_first_link = None
        self._db = YuDatabase()
        self._update()

    #-------------------------------------------------------------------
    def _update(self):
        """
        Updates the values of the stats object.
        """
        self.create_time_stamp = time()
        self.links_today = self._get_links_from_db_today()
        self.links_this_week = self._get_links_from_db_this_week()
        self.links_this_month = self._get_links_from_db_this_month()
        self.links_this_year = self._get_links_from_db_this_year()
        self.links_all = self._get_links_from_db_all()
        self.redirect_today = self._get_redirects_today()
        self.redirect_this_week = self._get_redirects_this_week()
        self.redirect_this_month = self._get_redirects_this_month()
        self.redirect_this_year = self._get_redirects_this_year()
        # self.redirect_per_week = self._get_redirects_per_week()
        self.redirect_all = self._get_redirects_all()
        self.date_of_first_redirect = self._get_date_of_first_redirect()
        self.date_of_first_link = self._get_date_of_first_link_entry()

    #-------------------------------------------------------------------
    def _get_links_from_db_today(self):
        """
        Collecting statistics about links added today from database.
        """
        try:
            return self._db.get_statistics_for_general_links('today')[1]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_links_from_db_this_week(self):
        """
        Collecting statistics about links added this week from database.
        """
        try:
            return self._db.get_statistics_for_general_links('this_week')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_links_from_db_this_month(self):
        """
        Collecting statistics about links added this month from database.
        """
        try:
            return self._db.get_statistics_for_general_links('this_month')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_links_from_db_this_year(self):
        """
        Collecting statistics about links added this year from database.
        """
        try:
            return self._db.get_statistics_for_general_links('this_year')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_links_from_db_all(self):
        """
        Collecting statistics about links added all time from database.
        """
        try:
            return self._db.get_statistics_for_general_links('all')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_redirects_today(self):
        """
        Collecting statistics about done redirects of today from database.
        """
        try:
            return self._db.get_statistics_for_general_redirects('today')[1]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_redirects_this_week(self):
        """
        Collecting statistics about done redirects of this week from database.
        """
        try:
            return self._db.get_statistics_for_general_redirects(
                'this_week')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_redirects_this_month(self):
        """
        Collecting statistics about done redirects of this month from database.
        """
        try:
            return self._db.get_statistics_for_general_redirects(
                'this_month')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_redirects_this_year(self):
        """
        Collecting statistics about done redirects of this year from database.
        """
        try:
            return self._db.get_statistics_for_general_redirects(
                'this_year')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_redirects_per_week(self):
        """
        Collecting statistics about done redirects groupd by week and year
        from database.
        """
        try:
            return self._db.get_statistics_for_general_redirects('per_week')
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_redirects_all(self):
        """
        Collecting statistics about done redirects ever from database.
        """
        try:
            return self._db.get_statistics_for_general_redirects('all')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_date_of_first_redirect(self):
        """
        Get timestamp of first redirect logged from database.
        """
        try:
            return self._db.get_date_of_first_entry('redirect')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def _get_date_of_first_link_entry(self):
        """
        Get timestamp of time of first inserted link from database.
        """
        try:
            return self._db.get_date_of_first_entry('link')[0]
        except TypeError:
            return None

    #-------------------------------------------------------------------
    def update_stats(self):
        """
        Public method to perform update on stats date
        """
        self._update()
示例#11
0
 def __init__(self, request, client_address, server):
     self._db = YuDatabase()
     self._logger = get_logger()
     self._header_only = False
     BaseHTTPRequestHandler.__init__(self, request, client_address, server)
示例#12
0
class YuRequestHandler(BaseHTTPRequestHandler):
    """
    Custom request handler to process HEAD, GET and POST requests
    """

    server_version = "%s/%s" % (SERVER_NAME, SERVER_VERSION)

    # ----------------------------------------------------------------------
    def __init__(self, request, client_address, server):
        self._db = YuDatabase()
        self._logger = get_logger()
        self._header_only = False
        BaseHTTPRequestHandler.__init__(self, request, client_address, server)

    # ----------------------------------------------------------------------
    def __del__(self):
        self._db.close()

    # ----------------------------------------------------------------------
    def _get_config_value(self, section, key):
        """
        Convenience function to retrieve config settings

        | **param** section (str)
        | **param** key (str)
        | **return** value (str)
        """
        return config.get(section, key)

    # ----------------------------------------------------------------------
    def _get_config_template(self, key):
        """
        Convenience function to retrieve a template filename from the config

        | **param** key (str)
        | **return** value (str)
        """
        tmp_path = self._get_config_value("templates", "path") + key
        return tmp_path

    # ----------------------------------------------------------------------
    def address_string(self):
        """
        Return the client address formatted for logging.
        Only lookup the hostname if really requested.

        | **return** hostname (str)
        """

        if self.server.log_ip_activated:
            host = self.client_address[0]
        else:
            host = "127.0.0.1"
        if self.server.resolve_clients:
            return socket.getfqdn(host)
        else:
            return host

    # ----------------------------------------------------------------------
    def log_request(self, code="-", size="-"):
        """
        Overwrite the default log_request() method to make it a no-op.
        We call the original method ourselves to pass also the response size.
        """
        pass

    # ----------------------------------------------------------------------
    def send_response(self, code, message=None, size="-"):
        """
        Send the response header and log the response code.

        Also send two standard headers with the server software
        version and the current date.

        | **param** code (int)
        | **param** message (str)
        | **param** size (str)
        """
        BaseHTTPRequestHandler.send_response(self, code, message)
        BaseHTTPRequestHandler.log_request(self, code, size)

    # ----------------------------------------------------------------------
    def log_message(self, msg_format, *args):
        """
        Overwrite the default log_message() method which prints for
        some reason to stderr which we don't want.  Instead, we use a
        logger.

        | **param** msg_format (str)
        | **return** args (seq of mixed)
        """
        try:
            useragent = self.headers["User-Agent"]
        except KeyError:
            useragent = "-"
        try:
            referrer = self.headers["Referer"]
        except KeyError:
            referrer = "-"

        values = dict(
            client=self.address_string(),
            identity="-",
            user="******",
            timestr=time.strftime("%d/%a/%Y:%H:%M:%S %z"),
            request=msg_format % args,
            referrer='"%s"' % referrer,
            useragent='"%s"' % useragent,
        )
        msg_format = "%(client)s %(identity)s %(user)s [%(timestr)s] %(request)s %(referrer)s %(useragent)s"
        access_logger = get_access_logger()
        access_logger.info(msg_format % values)

    # ----------------------------------------------------------------------
    def _send_head(self, text, code):
        """
        Send common headers

        | **param** text (str)
        | **param** code (int)
        """
        size = len(text)
        self.send_response(code, None, size)
        # Trying to figure out what we are going to send out.
        # Maybe this could be improved a bit further but should do
        # it for now.
        extension_start = self.path.rfind(".")
        extension = self.path[extension_start:]
        try:
            self.send_header("Content-Type", CONTENT_TYPES[extension])
        except KeyError:
            self.send_header("Content-Type", "text/html")
        self.send_header("Content-Length", size)
        self.end_headers()

    # -------------------------------------------------------------------
    def _send_homepage(self, message=""):
        """
        Sends the default startpage.

        |**param** message (str) Optional message that should appear on startpage
        """
        template_filename = self._get_config_template("homepage")
        text = read_template(template_filename, title=SERVER_NAME, header=SERVER_NAME, msg=message)
        self._send_response(text, 200)

    # -------------------------------------------------------------------
    def _send_blocked_page(self, reason):
        """
        Send a block page which tells the user that the URL has been
        blocked for some reason.

        | **param** reason Reason, why page has been blocked (str)
        """
        template_filename = self._get_config_template("blocked")
        text = read_template(template_filename, title=SERVER_NAME, header=SERVER_NAME, comment=reason)
        self._send_response(text, 200)

    # -------------------------------------------------------------------
    def _send_return_page(self, shorthash):
        """
        Send the result page for a new created short URL.

        | **param** shorthash - new shorthash for URL
        """
        template_filename = self._get_config_template("return")
        if shorthash == "1337":
            messagetext = "<p>Hey, you are 1337!</p>"
        else:
            messagetext = ""
        text = read_template(
            template_filename,
            message=messagetext,
            title="%s - Short URL Result" % SERVER_NAME,
            header="new URL",
            path=shorthash,
            hostname=self.server.hostname,
        )
        self._send_response(text, 200)

    # -------------------------------------------------------------------
    def _send_response(self, content, code=200):
        """
        This function is to be intended to consolidate the
        sending responses to on function.
        TODO: Sync with self.send_response() function which is
              already talking with HTTPServer-interface.

        | **param** content - text of page (str)
        | **param** code - response code e.g. 404 (int)
        """
        if content:
            self._send_head(content, code)
            if not self._header_only:
                try:
                    self.wfile.write(content)
                except socket.error:
                    # clients like to stop reading after they got a 404
                    pass
        else:
            self._send_internal_server_error()

    # -------------------------------------------------------------------
    def _send_301(self, new_url):
        """
        Send HTTP status code 301

        | **param** new_url (str)
        """
        try:
            self.send_response(301)
            self.send_header("Location", new_url)
            self.send_header("Content-type", "text/html")
            self.end_headers()
        except UnicodeEncodeError:
            self._send_internal_server_error()

    # ----------------------------------------------------------------------
    def _send_404(self):
        """
        Send HTTP status code 404
        """
        template_filename = self._get_config_template("404")
        text = read_template(
            template_filename, title="%s - 404" % SERVER_NAME, header="404 &mdash; Page not found", URL="Nothing"
        )
        self._send_response(text, 404)

    # ----------------------------------------------------------------------
    def _send_internal_server_error(self):
        """
        Send HTTP status code 500
        """
        template_filename = self._get_config_template("500")
        text = read_template(template_filename, title="%s - Internal Error" % SERVER_NAME, header="Internal error")
        if not text:
            # fallback to hard-coded template
            text = TEMPLATE_500
        self._send_head(text, 500)
        if not self._header_only:
            self.wfile.write(text)

    # ----------------------------------------------------------------------
    def _send_database_problem(self):
        """
        Send HTTP status code 500 due to a database connection error

        | **param** header_only (bool)
        """
        template_filename = self._get_config_template("databaseerror")
        text = read_template(template_filename, title="%s - Datebase error" % SERVER_NAME, header="Database error")
        if not text:
            self._send_internal_server_error()
            return
        self._send_head(text, 500)
        if not self._header_only:
            self.wfile.write(text)

    # ----------------------------------------------------------------------
    def _send_mail(self, subject, content, email):
        """
        Send a mail

        | **param** subject (str)
        | **param** content (str)
        | **param** email (str)
        """
        msg = MIMEText(content, "plain", "utf-8")

        msg["Subject"] = "%s" % (subject)
        msg["From"] = email
        msg["To"] = self._get_config_value("email", "toemail")

        try:
            smtp_conn = SMTP("localhost")
            smtp_conn.sendmail(msg["From"], [msg["To"]], msg.as_string())
            smtp_conn.quit()
        except (socket.error, SMTPException), e:
            self._logger.error("Mail could not be sent (%s)" % e)
            return False
        return True