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#!/usr/bin/env python

import sys
import os
import logging

""" @var formatting delimiter consisting of '=' characters """
double_line_delim = '=' * 78
""" @var formatting delimiter consisting of '-' characters """
single_line_delim = '-' * 78


def colorize(msg, color):
    return color + msg + COLOR_RESET


class ColorFormatter(logging.Formatter):

    def init(self, fmt=None, datefmt=None):
        super(ColorFormatter, self).__init__(fmt, datefmt)

    def format(self, record):
        message = super(ColorFormatter, self).format(record)
        if hasattr(record, 'color'):
            message = colorize(message, record.color)
        return message
try:
    verbose = int(os.getenv("V", 0))
except:
    verbose = 0

# 40 = ERROR, 30 = WARNING, 20 = INFO, 10 = DEBUG, 0 = NOTSET (all messages)
if verbose >= 2:
    log_level = 10
elif verbose == 1:
    log_level = 20
else:
    log_level = 40

handler = logging.StreamHandler(sys.stdout)
handler.setFormatter(ColorFormatter(fmt='%(asctime)s,%(msecs)03d %(message)s',
                                    datefmt="%H:%M:%S"))
handler.setLevel(log_level)

global_logger = logging.getLogger()
global_logger.addHandler(handler)

scapy_logger = logging.getLogger("scapy.runtime")
scapy_logger.setLevel(logging.ERROR)


def getLogger(name):
    logger = logging.getLogger(name)
    logger.setLevel(logging.DEBUG)
    return logger

# Static variables to store color formatting strings.
#
# These variables (RED, GREEN, YELLOW and LPURPLE) are used to configure
# the color of the text to be printed in the terminal. Variable COLOR_RESET
# is used to revert the text color to the default one.
if hasattr(sys.stdout, 'isatty') and sys.stdout.isatty():
    RED = '\033[91m'
    GREEN = '\033[92m'
    YELLOW = '\033[93m'
    LPURPLE = '\033[94m'
    COLOR_RESET = '\033[0m'
else:
    RED = ''
    GREEN = ''
    YELLOW = ''
    LPURPLE = ''
    COLOR_RESET = ''
c.Subheading */ .highlight .gt { color: #aa0000 } /* Generic.Traceback */ .highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */ .highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */ .highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */ .highlight .kp { color: #008800 } /* Keyword.Pseudo */ .highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */ .highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */ .highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */ .highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */ .highlight .na { color: #336699 } /* Name.Attribute */ .highlight .nb { color: #003388 } /* Name.Builtin */ .highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */ .highlight .no { color: #003366; font-weight: bold } /* Name.Constant */ .highlight .nd { color: #555555 } /* Name.Decorator */ .highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */ .highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */ .highlight .nl { color: #336699; font-style: italic } /* Name.Label */ .highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */ .highlight .py { color: #336699; font-weight: bold } /* Name.Property */ .highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */ .highlight .nv { color: #336699 } /* Name.Variable */ .highlight .ow { color: #008800 } /* Operator.Word */ .highlight .w { color: #bbbbbb } /* Text.Whitespace */ .highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */ .highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */ .highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */ .highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */ .highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */ .highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */ .highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */ .highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */ }
/*
 *------------------------------------------------------------------
 * bfd_api.c - bfd api
 *
 * Copyright (c) 2016 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *------------------------------------------------------------------
 */
/**
 * @file
 * @brief BFD binary API implementation
 */

#include <vnet/vnet.h>
#include <vlibmemory/api.h>

#include <vnet/interface.h>
#include <vnet/api_errno.h>
#include <vnet/bfd/bfd_main.h>
#include <vnet/bfd/bfd_api.h>

#include <vnet/vnet_msg_enum.h>

#define vl_typedefs		/* define message structures */
#include <vnet/vnet_all_api_h.h>
#undef vl_typedefs

#define vl_endianfun		/* define message structures */
#include <vnet/vnet_all_api_h.h>
#undef vl_endianfun

/* instantiate all the print functions we know about */
#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
#define vl_printfun
#include <vnet/vnet_all_api_h.h>
#undef vl_printfun

#include <vlibapi/api_helper_macros.h>

#define foreach_vpe_api_msg                                \
  _ (BFD_UDP_ADD, bfd_udp_add)                             \
  _ (BFD_UDP_MOD, bfd_udp_mod)                             \
  _ (BFD_UDP_DEL, bfd_udp_del)                             \
  _ (BFD_UDP_SESSION_DUMP, bfd_udp_session_dump)           \
  _ (BFD_UDP_SESSION_SET_FLAGS, bfd_udp_session_set_flags) \
  _ (WANT_BFD_EVENTS, want_bfd_events)                     \
  _ (BFD_AUTH_SET_KEY, bfd_auth_set_key)                   \
  _ (BFD_AUTH_DEL_KEY, bfd_auth_del_key)                   \
  _ (BFD_AUTH_KEYS_DUMP, bfd_auth_keys_dump)               \
  _ (BFD_UDP_AUTH_ACTIVATE, bfd_udp_auth_activate)         \
  _ (BFD_UDP_AUTH_DEACTIVATE, bfd_udp_auth_deactivate)     \
  _ (BFD_UDP_SET_ECHO_SOURCE, bfd_udp_set_echo_source)     \
  _ (BFD_UDP_DEL_ECHO_SOURCE, bfd_udp_del_echo_source)     \
  _ (BFD_UDP_GET_ECHO_SOURCE, bfd_udp_get_echo_source)

pub_sub_handler (bfd_events, BFD_EVENTS);

#define BFD_UDP_API_PARAM_COMMON_CODE                                         \
  ip46_address_t local_addr;                                                  \
  clib_memset (&local_addr, 0, sizeof (local_addr));                               \
  ip46_address_t peer_addr;                                                   \
  clib_memset (&peer_addr, 0, sizeof (peer_addr));                                 \
  if (mp->is_ipv6)                                                            \
    {                                                                         \
      clib_memcpy (&local_addr.ip6, mp->local_addr, sizeof (local_addr.ip6)); \
      clib_memcpy (&peer_addr.ip6, mp->peer_addr, sizeof (peer_addr.ip6));    \
    }                                                                         \
  else                                                                        \
    {                                                                         \
      clib_memcpy (&local_addr.ip4, mp->local_addr, sizeof (local_addr.ip4)); \
      clib_memcpy (&peer_addr.ip4, mp->peer_addr, sizeof (peer_addr.ip4));    \
    }

#define BFD_UDP_API_PARAM_FROM_MP(mp) \
  clib_net_to_host_u32 (mp->sw_if_index), &local_addr, &peer_addr

static void
vl_api_bfd_udp_add_t_handler (vl_api_bfd_udp_add_t * mp)
{
  vl_api_bfd_udp_add_reply_t *rmp;
  int rv;

  VALIDATE_SW_IF_INDEX (mp);

  BFD_UDP_API_PARAM_COMMON_CODE;

  rv = bfd_udp_add_session (BFD_UDP_API_PARAM_FROM_MP (mp),
			    clib_net_to_host_u32 (mp->desired_min_tx),
			    clib_net_to_host_u32 (mp->required_min_rx),
			    mp->detect_mult, mp->is_authenticated,
			    clib_net_to_host_u32 (mp->conf_key_id),
			    mp->bfd_key_id);

  BAD_SW_IF_INDEX_LABEL;
  REPLY_MACRO (VL_API_BFD_UDP_ADD_REPLY);
}

static void
vl_api_bfd_udp_mod_t_handler (vl_api_bfd_udp_mod_t * mp)
{
  vl_api_bfd_udp_mod_reply_t *rmp;
  int rv;

  VALIDATE_SW_IF_INDEX (mp);

  BFD_UDP_API_PARAM_COMMON_CODE;

  rv = bfd_udp_mod_session (BFD_UDP_API_PARAM_FROM_MP (mp),
			    clib_net_to_host_u32 (mp->desired_min_tx),
			    clib_net_to_host_u32 (mp->required_min_rx),
			    mp->detect_mult);

  BAD_SW_IF_INDEX_LABEL;
  REPLY_MACRO (VL_API_BFD_UDP_MOD_REPLY);
}

static void
vl_api_bfd_udp_del_t_handler (vl_api_bfd_udp_del_t * mp)
{
  vl_api_bfd_udp_del_reply_t *rmp;
  int rv;

  VALIDATE_SW_IF_INDEX (mp);

  BFD_UDP_API_PARAM_COMMON_CODE;

  rv = bfd_udp_del_session (BFD_UDP_API_PARAM_FROM_MP (mp));

  BAD_SW_IF_INDEX_LABEL;
  REPLY_MACRO (VL_API_BFD_UDP_DEL_REPLY);
}

void
send_bfd_udp_session_details (vl_api_registration_t * reg, u32 context,
			      bfd_session_t * bs)
{
  if (bs->transport != BFD_TRANSPORT_UDP4 &&
      bs->transport != BFD_TRANSPORT_UDP6)
    {
      return;
    }

  vl_api_bfd_udp_session_details_t *mp = vl_msg_api_alloc (sizeof (*mp));
  clib_memset (mp, 0, sizeof (*mp));
  mp->_vl_msg_id = ntohs (VL_API_BFD_UDP_SESSION_DETAILS);
  mp->context = context;
  mp->state = bs->local_state;
  bfd_udp_session_t *bus = &bs->udp;
  bfd_udp_key_t *key = &bus->key;
  mp->sw_if_index = clib_host_to_net_u32 (key->sw_if_index);
  mp->is_ipv6 = !(ip46_address_is_ip4 (&key->local_addr));
  if ((!bs->auth.is_delayed && bs->auth.curr_key) ||
      (bs->auth.is_delayed && bs->auth.next_key))
    {
      mp->is_authenticated = 1;
    }
  if (bs->auth.is_delayed && bs->auth.next_key)
    {
      mp->bfd_key_id = bs->auth.next_bfd_key_id;
      mp->conf_key_id = clib_host_to_net_u32 (bs->auth.next_key->conf_key_id);
    }
  else if (!bs->auth.is_delayed && bs->auth.curr_key)
    {
      mp->bfd_key_id = bs->auth.curr_bfd_key_id;
      mp->conf_key_id = clib_host_to_net_u32 (bs->auth.curr_key->conf_key_id);
    }
  if (mp->is_ipv6)
    {
      clib_memcpy (mp->local_addr, &key->local_addr,
		   sizeof (key->local_addr));
      clib_memcpy (mp->peer_addr, &key->peer_addr, sizeof (key->peer_addr));
    }
  else
    {
      clib_memcpy (mp->local_addr, key->local_addr.ip4.data,
		   sizeof (key->local_addr.ip4.data));
      clib_memcpy (mp->peer_addr, key->peer_addr.ip4.data,
		   sizeof (key->peer_addr.ip4.data));
    }

  mp->required_min_rx =
    clib_host_to_net_u32 (bs->config_required_min_rx_usec);
  mp->desired_min_tx = clib_host_to_net_u32 (bs->config_desired_min_tx_usec);
  mp->detect_mult = bs->local_detect_mult;
  vl_api_send_msg (reg, (u8 *) mp);
}

void
bfd_event (bfd_main_t * bm, bfd_session_t * bs)
{
  vpe_api_main_t *vam = &vpe_api_main;
  vpe_client_registration_t *reg;
  vl_api_registration_t *vl_reg;
  /* *INDENT-OFF* */
  pool_foreach (reg, vam->bfd_events_registrations, ({
    vl_reg = vl_api_client_index_to_registration (reg->client_index);
    if (vl_reg)
      {
	switch (bs->transport)
	  {
	  case BFD_TRANSPORT_UDP4:
	  /* fallthrough */
	  case BFD_TRANSPORT_UDP6:
	    send_bfd_udp_session_details (vl_reg, 0, bs);
	  }
      }
  }));
  /* *INDENT-ON* */
}

static void
vl_api_bfd_udp_session_dump_t_handler (vl_api_bfd_udp_session_dump_t * mp)
{
  vl_api_registration_t *reg;

  reg = vl_api_client_index_to_registration (mp->client_index);
  if (!reg)
    return;

  bfd_session_t *bs = NULL;
  /* *INDENT-OFF* */
  pool_foreach (bs, bfd_main.sessions, ({
    if (bs->transport == BFD_TRANSPORT_UDP4 ||
	bs->transport == BFD_TRANSPORT_UDP6)
      send_bfd_udp_session_details (reg, mp->context, bs);
  }));
  /* *INDENT-ON* */
}

static void
vl_api_bfd_udp_session_set_flags_t_handler (vl_api_bfd_udp_session_set_flags_t
					    * mp)
{
  vl_api_bfd_udp_session_set_flags_reply_t *rmp;
  int rv;

  BFD_UDP_API_PARAM_COMMON_CODE;

  rv = bfd_udp_session_set_flags (BFD_UDP_API_PARAM_FROM_MP (mp),
				  mp->admin_up_down);

  REPLY_MACRO (VL_API_BFD_UDP_SESSION_SET_FLAGS_REPLY);
}

static void
vl_api_bfd_auth_set_key_t_handler (vl_api_bfd_auth_set_key_t * mp)
{
  vl_api_bfd_auth_set_key_reply_t *rmp;
  int rv = bfd_auth_set_key (clib_net_to_host_u32 (mp->conf_key_id),
			     mp->auth_type, mp->key_len, mp->key);

  REPLY_MACRO (VL_API_BFD_AUTH_SET_KEY_REPLY);
}

static void
vl_api_bfd_auth_del_key_t_handler (vl_api_bfd_auth_del_key_t * mp)
{
  vl_api_bfd_auth_del_key_reply_t *rmp;
  int rv = bfd_auth_del_key (clib_net_to_host_u32 (mp->conf_key_id));

  REPLY_MACRO (VL_API_BFD_AUTH_DEL_KEY_REPLY);
}

static void
vl_api_bfd_auth_keys_dump_t_handler (vl_api_bfd_auth_keys_dump_t * mp)
{
  vl_api_registration_t *reg;

  reg = vl_api_client_index_to_registration (mp->client_index);
  if (!reg)
    return;

  bfd_auth_key_t *key = NULL;
  vl_api_bfd_auth_keys_details_t *rmp = NULL;

  /* *INDENT-OFF* */
  pool_foreach (key, bfd_main.auth_keys, ({
    rmp = vl_msg_api_alloc (sizeof (*rmp));
    clib_memset (rmp, 0, sizeof (*rmp));
    rmp->_vl_msg_id = ntohs (VL_API_BFD_AUTH_KEYS_DETAILS);
    rmp->context = mp->context;
    rmp->conf_key_id = clib_host_to_net_u32 (key->conf_key_id);
    rmp->auth_type = key->auth_type;
    rmp->use_count = clib_host_to_net_u32 (key->use_count);
    vl_api_send_msg (reg, (u8 *)rmp);
  }));
  /* *INDENT-ON* */
}

static void
vl_api_bfd_udp_auth_activate_t_handler (vl_api_bfd_udp_auth_activate_t * mp)
{
  vl_api_bfd_udp_auth_activate_reply_t *rmp;
  int rv;

  VALIDATE_SW_IF_INDEX (mp);

  BFD_UDP_API_PARAM_COMMON_CODE;

  rv = bfd_udp_auth_activate (BFD_UDP_API_PARAM_FROM_MP (mp),
			      clib_net_to_host_u32 (mp->conf_key_id),
			      mp->bfd_key_id, mp->is_delayed);

  BAD_SW_IF_INDEX_LABEL;
  REPLY_MACRO (VL_API_BFD_UDP_AUTH_ACTIVATE_REPLY);
}

static void
vl_api_bfd_udp_auth_deactivate_t_handler (vl_api_bfd_udp_auth_deactivate_t *
					  mp)
{
  vl_api_bfd_udp_auth_deactivate_reply_t *rmp;
  int rv;

  VALIDATE_SW_IF_INDEX (mp);

  BFD_UDP_API_PARAM_COMMON_CODE;

  rv =
    bfd_udp_auth_deactivate (BFD_UDP_API_PARAM_FROM_MP (mp), mp->is_delayed);

  BAD_SW_IF_INDEX_LABEL;
  REPLY_MACRO (VL_API_BFD_UDP_AUTH_DEACTIVATE_REPLY);
}

static void
vl_api_bfd_udp_set_echo_source_t_handler (vl_api_bfd_udp_set_echo_source_t *
					  mp)
{
  vl_api_bfd_udp_set_echo_source_reply_t *rmp;
  int rv;

  VALIDATE_SW_IF_INDEX (mp);

  rv = bfd_udp_set_echo_source (clib_net_to_host_u32 (mp->sw_if_index));

  BAD_SW_IF_INDEX_LABEL;
  REPLY_MACRO (VL_API_BFD_UDP_SET_ECHO_SOURCE_REPLY);
}

static void
vl_api_bfd_udp_del_echo_source_t_handler (vl_api_bfd_udp_del_echo_source_t *
					  mp)
{
  vl_api_bfd_udp_del_echo_source_reply_t *rmp;
  int rv;

  rv = bfd_udp_del_echo_source ();

  REPLY_MACRO (VL_API_BFD_UDP_DEL_ECHO_SOURCE_REPLY);
}

static void
vl_api_bfd_udp_get_echo_source_t_handler (vl_api_bfd_udp_get_echo_source_t *
					  mp)
{
  vl_api_bfd_udp_get_echo_source_reply_t *rmp;
  int rv = 0;
  int is_set;
  u32 sw_if_index;
  int have_usable_ip4;
  ip4_address_t ip4;
  int have_usable_ip6;
  ip6_address_t ip6;

  bfd_udp_get_echo_source (&is_set, &sw_if_index, &have_usable_ip4, &ip4,
			   &have_usable_ip6, &ip6);

  /* *INDENT-OFF* */
  REPLY_MACRO2 (VL_API_BFD_UDP_GET_ECHO_SOURCE_REPLY,
  ({
    rmp->sw_if_index = ntohl (sw_if_index);
    if (is_set)
      {
        rmp->is_set = 1;
        rmp->sw_if_index = clib_host_to_net_u32 (sw_if_index);
        if (have_usable_ip4)
          {
            rmp->have_usable_ip4 = 1;
            clib_memcpy (rmp->ip4_addr, &ip4, sizeof (ip4));
          }
        else
          {
            rmp->have_usable_ip4 = 0;
          }
        if (have_usable_ip6)
          {
            rmp->have_usable_ip6 = 1;
            clib_memcpy (rmp->ip6_addr, &ip6, sizeof (ip6));
          }
        else
          {
            rmp->have_usable_ip6 = 0;
          }
      }
    else
      {
        rmp->is_set = 0;
        rmp->have_usable_ip4 = 0;
        rmp->have_usable_ip6 = 0;
      }
  }))
  /* *INDENT-ON* */
}

/*
 * bfd_api_hookup
 * Add vpe's API message handlers to the table.
 * vlib has alread mapped shared memory and
 * added the client registration handlers.
 * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
 */
#define vl_msg_name_crc_list
#include <vnet/vnet_all_api_h.h>
#undef vl_msg_name_crc_list

static void
setup_message_id_table (api_main_t * am)
{
#define _(id, n, crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
  foreach_vl_msg_name_crc_bfd;
#undef _
}

static clib_error_t *
bfd_api_hookup (vlib_main_t * vm)
{
  api_main_t *am = &api_main;

#define _(N, n)                                                    \
  vl_msg_api_set_handlers (VL_API_##N, #n, vl_api_##n##_t_handler, \
                           vl_noop_handler, vl_api_##n##_t_endian, \
                           vl_api_##n##_t_print, sizeof (vl_api_##n##_t), 1);
  foreach_vpe_api_msg;
#undef _

  /*
   * Set up the (msg_name, crc, message-id) table
   */
  setup_message_id_table (am);

  return 0;
}

VLIB_API_INIT_FUNCTION (bfd_api_hookup);

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */