rip_interface.c

大名鼎鼎的路由器源码。程序分ZEBRA、OSPFRIP等3个包。程序框架采用一个路由协议一个进程的方式

  rip_neighbor_add (&p);
  
  return CMD_SUCCESS;
}

/* RIP neighbor configuration unset. */
DEFUN (no_rip_neighbor,
       no_rip_neighbor_cmd,
       "no neighbor A.B.C.D",
       NO_STR
       "Specify a neighbor router\n"
       "Neighbor address\n")
{
  int ret;
  struct prefix_ipv4 p;

  ret = str2prefix_ipv4 (argv[0], &p);

  if (ret <= 0)
    {
      vty_out (vty, "Please specify address by A.B.C.D%s", VTY_NEWLINE);
      return CMD_WARNING;
    }

  rip_neighbor_delete (&p);
  
  return CMD_SUCCESS;
}

DEFUN (ip_rip_receive_version,
       ip_rip_receive_version_cmd,
       "ip rip receive version (1|2)",
       IP_STR
       "Routing Information Protocol\n"
       "Advertisement reception\n"
       "Version control\n"
       "RIP version 1\n"
       "RIP version 2\n")
{
  struct interface *ifp;
  struct rip_interface *ri;

  ifp = (struct interface *)vty->index;
  ri = ifp->info;

  /* Version 1. */
  if (atoi (argv[0]) == 1)
    {
      ri->ri_receive = RI_RIP_VERSION_1;
      return CMD_SUCCESS;
    }
  if (atoi (argv[0]) == 2)
    {
      ri->ri_receive = RI_RIP_VERSION_2;
      return CMD_SUCCESS;
    }
  return CMD_WARNING;
}

DEFUN (ip_rip_receive_version_1,
       ip_rip_receive_version_1_cmd,
       "ip rip receive version 1 2",
       IP_STR
       "Routing Information Protocol\n"
       "Advertisement reception\n"
       "Version control\n"
       "RIP version 1\n"
       "RIP version 2\n")
{
  struct interface *ifp;
  struct rip_interface *ri;

  ifp = (struct interface *)vty->index;
  ri = ifp->info;

  /* Version 1 and 2. */
  ri->ri_receive = RI_RIP_VERSION_1_AND_2;
  return CMD_SUCCESS;
}

DEFUN (ip_rip_receive_version_2,
       ip_rip_receive_version_2_cmd,
       "ip rip receive version 2 1",
       IP_STR
       "Routing Information Protocol\n"
       "Advertisement reception\n"
       "Version control\n"
       "RIP version 2\n"
       "RIP version 1\n")
{
  struct interface *ifp;
  struct rip_interface *ri;

  ifp = (struct interface *)vty->index;
  ri = ifp->info;

  /* Version 1 and 2. */
  ri->ri_receive = RI_RIP_VERSION_1_AND_2;
  return CMD_SUCCESS;
}

DEFUN (no_ip_rip_receive_version,
       no_ip_rip_receive_version_cmd,
       "no ip rip receive version",
       NO_STR
       IP_STR
       "Routing Information Protocol\n"
       "Advertisement reception\n"
       "Version control\n")
{
  struct interface *ifp;
  struct rip_interface *ri;

  ifp = (struct interface *)vty->index;
  ri = ifp->info;

  ri->ri_receive = RI_RIP_UNSPEC;
  return CMD_SUCCESS;
}

ALIAS (no_ip_rip_receive_version,
       no_ip_rip_receive_version_num_cmd,
       "no ip rip receive version (1|2)",
       NO_STR
       IP_STR
       "Routing Information Protocol\n"
       "Advertisement reception\n"
       "Version control\n"
       "Version 1\n"
       "Version 2\n");

DEFUN (ip_rip_send_version,
       ip_rip_send_version_cmd,
       "ip rip send version (1|2)",
       IP_STR
       "Routing Information Protocol\n"
       "Advertisement transmission\n"
       "Version control\n"
       "RIP version 1\n"
       "RIP version 2\n")
{
  struct interface *ifp;
  struct rip_interface *ri;

  ifp = (struct interface *)vty->index;
  ri = ifp->info;

  /* Version 1. */
  if (atoi (argv[0]) == 1)
    {
      ri->ri_send = RI_RIP_VERSION_1;
      return CMD_SUCCESS;
    }
  if (atoi (argv[0]) == 2)
    {
      ri->ri_send = RI_RIP_VERSION_2;
      return CMD_SUCCESS;
    }
  return CMD_WARNING;
}

DEFUN (ip_rip_send_version_1,
       ip_rip_send_version_1_cmd,
       "ip rip send version 1 2",
       IP_STR
       "Routing Information Protocol\n"
       "Advertisement transmission\n"
       "Version control\n"
       "RIP version 1\n"
       "RIP version 2\n")
{
  struct interface *ifp;
  struct rip_interface *ri;

  ifp = (struct interface *)vty->index;
  ri = ifp->info;

  /* Version 1 and 2. */
  ri->ri_send = RI_RIP_VERSION_1_AND_2;
  return CMD_SUCCESS;
}

DEFUN (ip_rip_send_version_2,
       ip_rip_send_version_2_cmd,
       "ip rip send version 2 1",
       IP_STR
       "Routing Information Protocol\n"
       "Advertisement transmission\n"
       "Version control\n"
       "RIP version 2\n"
       "RIP version 1\n")
{
  struct interface *ifp;
  struct rip_interface *ri;

  ifp = (struct interface *)vty->index;
  ri = ifp->info;

  /* Version 1 and 2. */
  ri->ri_send = RI_RIP_VERSION_1_AND_2;
  return CMD_SUCCESS;
}

DEFUN (no_ip_rip_send_version,
       no_ip_rip_send_version_cmd,
       "no ip rip send version",
       NO_STR
       IP_STR
       "Routing Information Protocol\n"
       "Advertisement transmission\n"
       "Version control\n")
{
  struct interface *ifp;
  struct rip_interface *ri;

  ifp = (struct interface *)vty->index;
  ri = ifp->info;

  ri->ri_send = RI_RIP_UNSPEC;
  return CMD_SUCCESS;
}

ALIAS (no_ip_rip_send_version,
       no_ip_rip_send_version_num_cmd,
       "no ip rip send version (1|2)",
       NO_STR
       IP_STR
       "Routing Information Protocol\n"
       "Advertisement transmission\n"
       "Version control\n"
       "Version 1\n"
       "Version 2\n");

DEFUN (ip_rip_authentication_mode,
       ip_rip_authentication_mode_cmd,
       "ip rip authentication mode (md5|text)",
       IP_STR
       "Routing Information Protocol\n"
       "Authentication control\n"
       "Authentication mode\n"
       "Keyed message digest\n"
       "Clear text authentication\n")
{
  struct interface *ifp;
  struct rip_interface *ri;

  ifp = (struct interface *)vty->index;
  ri = ifp->info;

  if (strncmp ("md5", argv[0], strlen (argv[0])) == 0)
    ri->auth_type = RIP_AUTH_MD5;
  else if (strncmp ("text", argv[0], strlen (argv[0])) == 0)
    ri->auth_type = RIP_AUTH_SIMPLE_PASSWORD;
  else
    {
      vty_out (vty, "mode should be md5 or text%s", VTY_NEWLINE);
      return CMD_WARNING;
    }

  return CMD_SUCCESS;
}

DEFUN (no_ip_rip_authentication_mode,
       no_ip_rip_authentication_mode_cmd,
       "no ip rip authentication mode",
       NO_STR
       IP_STR
       "Routing Information Protocol\n"
       "Authentication control\n"
       "Authentication mode\n")
{
  struct interface *ifp;
  struct rip_interface *ri;

  ifp = (struct interface *)vty->index;
  ri = ifp->info;

  /* ri->auth_type = RIP_NO_AUTH; */
  ri->auth_type = RIP_AUTH_SIMPLE_PASSWORD;

  return CMD_SUCCESS;
}

ALIAS (no_ip_rip_authentication_mode,
       no_ip_rip_authentication_mode_type_cmd,
       "no ip rip authentication mode (md5|text)",
       NO_STR
       IP_STR
       "Routing Information Protocol\n"
       "Authentication control\n"
       "Authentication mode\n"
       "Keyed message digest\n"
       "Clear text authentication\n");

DEFUN (ip_rip_authentication_string,
       ip_rip_authentication_string_cmd,
       "ip rip authentication string LINE",
       IP_STR
       "Routing Information Protocol\n"
       "Authentication control\n"
       "Authentication string\n"
       "Authentication string\n")
{
  struct interface *ifp;
  struct rip_interface *ri;

  ifp = (struct interface *)vty->index;
  ri = ifp->info;

  if (strlen (argv[0]) > 16)
    {
      vty_out (vty, "%% RIPv2 authentication string must be shorter than 16%s",
	       VTY_NEWLINE);
      return CMD_WARNING;
    }

  if (ri->key_chain)
    {
      vty_out (vty, "%% key-chain configuration exists%s", VTY_NEWLINE);
      return CMD_WARNING;
    }

  if (ri->auth_str)
    free (ri->auth_str);

  ri->auth_str = strdup (argv[0]);

  return CMD_SUCCESS;
}

DEFUN (no_ip_rip_authentication_string,
       no_ip_rip_authentication_string_cmd,
       "no ip rip authentication string",
       NO_STR
       IP_STR
       "Routing Information Protocol\n"
       "Authentication control\n"
       "Authentication string\n")
{
  struct interface *ifp;
  struct rip_interface *ri;

  ifp = (struct interface *)vty->index;
  ri = ifp->info;

  if (ri->auth_str)
    free (ri->auth_str);

  ri->auth_str = NULL;

  return CMD_SUCCESS;
}

ALIAS (no_ip_rip_authentication_string,
       no_ip_rip_authentication_string2_cmd,
       "no ip rip authentication string LINE",
       NO_STR
       IP_STR
       "Routing Information Protocol\n"
       "Authentication control\n"
       "Authentication string\n"
       "Authentication string\n");

DEFUN (ip_rip_authentication_key_chain,
       ip_rip_authentication_key_chain_cmd,
       "ip rip authentication key-chain LINE",
       IP_STR
       "Routing Information Protocol\n"
       "Authentication control\n"
       "Authentication key-chain\n"
       "name of key-chain\n")
{
  struct interface *ifp;
  struct rip_interface *ri;

  ifp = (struct interface *) vty->index;
  ri = ifp->info;

  if (ri->auth_str)
    {
      vty_out (vty, "%% authentication string configuration exists%s",
	       VTY_NEWLINE);
      return CMD_WARNING;
    }

  if (ri->key_chain)
    free (ri->key_chain);

  ri->key_chain = strdup (argv[0]);

  return CMD_SUCCESS;
}

DEFUN (no_ip_rip_authentication_key_chain,
       no_ip_rip_authentication_key_chain_cmd,
       "no ip rip authentication key-chain",
       NO_STR
       IP_STR
       "Routing Information Protocol\n"
       "Authentication control\n"
       "Authentication key-chain\n")
{
  struct interface *ifp;
  struct rip_interface *ri;

  ifp = (struct interface *) vty->index;
  ri = ifp->info;

  if (ri->key_chain)
    free (ri->key_chain);

  ri->key_chain = NULL;

  return CMD_SUCCESS;
}

ALIAS (no_ip_rip_authentication_key_chain,
       no_ip_rip_authentication_key_chain2_cmd,
       "no ip rip authentication key-chain LINE",
       NO_STR
       IP_STR
       "Routing Information Protocol\n"
       "Authentication control\n"
       "Authentication key-chain\n"
       "name of key-chain\n");

DEFUN (rip_split_horizon,
       rip_split_horizon_cmd,
       "ip split-horizon",
       IP_STR
       "Perform split horizon\n")
{
  struct interface *ifp;
  struct rip_interface *ri;

  ifp = vty->index;
  ri = ifp->info;

  ri->split_horizon = 1;
  return CMD_SUCCESS;
}

DEFUN (no_rip_split_horizon,
       no_rip_split_horizon_cmd,
       "no ip split-horizon",
       NO_STR
       IP_STR
       "Perform split horizon\n")
{
  struct interface *ifp;
  struct rip_interface *ri;

  ifp = vty->index;
  ri = ifp->info;

  ri->split_horizon = 0;
  return CMD_SUCCESS;
}

DEFUN (rip_passive_interface,
       rip_passive_interface_cmd,
       "passive-interface IFNAME",
       "Suppress routing updates on an interface\n"
       "Interface name\n")
{
  return rip_passive_interface_set (vty, argv[0]);
}

DEFUN (no_rip_passive_interface,
       no_rip_passive_interface_cmd,
       "no passive-interface IFNAME",
       NO_STR
       "Suppress routing updates on an interface\n"
       "Interface name\n")
{
  return rip_passive_interface_unset (vty, argv[0]);
}

/* Write rip configuration of each interface. */
int
rip_interface_config_write (struct vty *vty)
{
  listnode node;
  struct interface *ifp;

  for (node = listhead (iflist); node; nextnode (node))
    {
      struct rip_interface *ri;

      ifp = getdata (node);
      ri = ifp->info;

      vty_out (vty, "interface %s%s", ifp->name,
	       VTY_NEWLINE);

      if (ifp->desc)
	vty_out (vty, " description %s%s", ifp->desc,
		 VTY_NEWLINE);

      /* Split horizon. */
      if (ri->split_horizon != ri->split_horizon_default)
	{
	  if (ri->split_horizon)
	    vty_out (vty, " ip split-horizon%s", VTY_NEWLINE);
	  else
	    vty_out (vty, " no ip split-horizon%s", VTY_NEWLINE);
	}

      /* RIP version setting. */
      if (ri->ri_send != RI_RIP_UNSPEC)
	vty_out (vty, " ip rip send version %s%s",
		 lookup (ri_version_msg, ri->ri_send),
		 VTY_NEWLINE);

      if (ri->ri_receive != RI_RIP_UNSPEC)
	vty_out (vty, " ip rip receive version %s%s",
		 lookup (ri_version_msg, ri->ri_receive),
		 VTY_NEWLINE);

      /* RIP authentication. */
#if 0 
      /* RIP_AUTH_SIMPLE_PASSWORD becomes default mode. */
      if (ri->auth_type == RIP_AUTH_SIMPLE_PASSWORD)
	vty_out (vty, " ip rip authentication mode text%s", VTY_NEWLINE);
#endif /* 0 */
      if (ri->auth_type == RIP_AUTH_MD5)
	vty_out (vty, " ip rip authentication mode md5%s", VTY_NEWLINE);

      if (ri->auth_str)
	vty_out (vty, " ip rip authentication string %s%s",
		 ri->auth_str, VTY_NEWLINE);

      if (ri->key_chain)
	vty_out (vty, " ip rip authentication key-chain %s%s",
		 ri->key_chain, VTY_NEWLINE);

      vty_out (vty, "!%s", VTY_NEWLINE);
    }
  return 0;
}

int
config_write_rip_network (struct vty *vty, int config_mode)
{
  int i;
  char *ifname;
  struct route_node *node;

  /* Network type RIP enable interface statement. */
  for (node = route_top (rip_enable_network); node; node = route_next (node))
    if (node->info)
      vty_out (vty, "%s%s/%d%s", 
	       config_mode ? " network " : "    ",
	       inet_ntoa (node->p.u.prefix4),
	       node->p.prefixlen,
	       VTY_NEWLINE);

  /* Interface name RIP enable statement. */
  for (i = 0; i < vector_max (rip_enable_interface); i++)
    if ((ifname = vector_slot (rip_enable_interface, i)) != NULL)
      vty_out (vty, "%s%s%s",
	       config_mode ? " network " : "    ",
	       ifname,
	       VTY_NEWLINE);

  /* RIP neighbors listing. */
  for (node = route_top (rip->neighbor); node; node = route_next (node))
    if (node->info)
      vty_out (vty, "%s%s%s", 
	       config_mode ? " neighbor " : "    ",
	       inet_ntoa (node->p.u.prefix4),
	       VTY_NEWLINE);

  /* RIP passive interface listing. */
  if (config_mode)
    for (i = 0; i < vector_max (Vrip_passive_interface); i++)
      if ((ifname = vector_slot (Vrip_passive_interface, i)) != NULL)
	vty_out (vty, " passive-interface %s%s", ifname, VTY_NEWLINE);

  return 0;
}

struct cmd_node interface_node =
{
  INTERFACE_NODE,
  "%s(config-if)# ",
  1,
};

/* Called when interface structure allocated. */
int
rip_interface_new_hook (struct interface *ifp)
{
  ifp->info = rip_interface_new ();
  return 0;
}

/* Called when interface structure deleted. */
int
rip_interface_delete_hook (struct interface *ifp)
{
  XFREE (MTYPE_RIP_INTERFACE, ifp->info);
  return 0;
}

/* Allocate and initialize interface vector. */
void
rip_if_init ()
{
  /* Default initial size of interface vector. */
  if_init();
  if_add_hook (IF_NEW_HOOK, rip_interface_new_hook);
  if_add_hook (IF_DELETE_HOOK, rip_interface_delete_hook);
  
  /* RIP network init. */
  rip_enable_interface = vector_init (1);
  rip_enable_network = route_table_init ();

  /* RIP passive interface. */
  Vrip_passive_interface = vector_init (1);

  /* Install interface node. */
  install_node (&interface_node, rip_interface_config_write);

  /* Install commands. */
  install_element (CONFIG_NODE, &interface_cmd);
  install_default (INTERFACE_NODE);
  install_element (INTERFACE_NODE, &interface_desc_cmd);
  install_element (INTERFACE_NODE, &no_interface_desc_cmd);
  install_element (RIP_NODE, &rip_network_cmd);
  install_element (RIP_NODE, &no_rip_network_cmd);
  install_element (RIP_NODE, &rip_neighbor_cmd);
  install_element (RIP_NODE, &no_rip_neighbor_cmd);

  install_element (RIP_NODE, &rip_passive_interface_cmd);
  install_element (RIP_NODE, &no_rip_passive_interface_cmd);

  install_element (INTERFACE_NODE, &ip_rip_send_version_cmd);
  install_element (INTERFACE_NODE, &ip_rip_send_version_1_cmd);
  install_element (INTERFACE_NODE, &ip_rip_send_version_2_cmd);
  install_element (INTERFACE_NODE, &no_ip_rip_send_version_cmd);
  install_element (INTERFACE_NODE, &no_ip_rip_send_version_num_cmd);

  install_element (INTERFACE_NODE, &ip_rip_receive_version_cmd);
  install_element (INTERFACE_NODE, &ip_rip_receive_version_1_cmd);
  install_element (INTERFACE_NODE, &ip_rip_receive_version_2_cmd);
  install_element (INTERFACE_NODE, &no_ip_rip_receive_version_cmd);
  install_element (INTERFACE_NODE, &no_ip_rip_receive_version_num_cmd);

  install_element (INTERFACE_NODE, &ip_rip_authentication_mode_cmd);
  install_element (INTERFACE_NODE, &no_ip_rip_authentication_mode_cmd);
  install_element (INTERFACE_NODE, &no_ip_rip_authentication_mode_type_cmd);

  install_element (INTERFACE_NODE, &ip_rip_authentication_key_chain_cmd);
  install_element (INTERFACE_NODE, &no_ip_rip_authentication_key_chain_cmd);
  install_element (INTERFACE_NODE, &no_ip_rip_authentication_key_chain2_cmd);

  install_element (INTERFACE_NODE, &ip_rip_authentication_string_cmd);
  install_element (INTERFACE_NODE, &no_ip_rip_authentication_string_cmd);
  install_element (INTERFACE_NODE, &no_ip_rip_authentication_string2_cmd);

  install_element (INTERFACE_NODE, &rip_split_horizon_cmd);
  install_element (INTERFACE_NODE, &no_rip_split_horizon_cmd);
}