bird/proto/rip/config.Y
Ondrej Zajicek 70e212f913 Implements TTL security for OSPF and RIP.
Interfaces for OSPF and RIP could be configured to use (and request)
TTL 255 for traffic to direct neighbors.

Thanks to Simon Dickhoven for the original patch for RIPng.
2013-06-25 15:39:44 +02:00

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/*
* BIRD -- RIP Configuration
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
/*
To add:
version1 switch
*/
CF_HDR
#include "proto/rip/rip.h"
#include "nest/iface.h"
CF_DEFINES
#define RIP_CFG ((struct rip_proto_config *) this_proto)
#define RIP_IPATT ((struct rip_patt *) this_ipatt)
#ifdef IPV6
#define RIP_DEFAULT_TTL_SECURITY 2
#else
#define RIP_DEFAULT_TTL_SECURITY 0
#endif
CF_DECLS
CF_KEYWORDS(RIP, INFINITY, METRIC, PORT, PERIOD, GARBAGE, TIMEOUT,
MODE, BROADCAST, MULTICAST, QUIET, NOLISTEN, VERSION1,
AUTHENTICATION, NONE, PLAINTEXT, MD5, TTL, SECURITY,
HONOR, NEVER, NEIGHBOR, ALWAYS, TX, PRIORITY, ONLY,
RIP_METRIC, RIP_TAG)
%type <i> rip_mode rip_auth
CF_GRAMMAR
CF_ADDTO(proto, rip_cfg '}' { RIP_CFG->passwords = get_passwords(); } )
rip_cfg_start: proto_start RIP {
this_proto = proto_config_new(&proto_rip, sizeof(struct rip_proto_config), $1);
rip_init_config(RIP_CFG);
}
;
rip_cfg:
rip_cfg_start proto_name '{'
| rip_cfg proto_item ';'
| rip_cfg INFINITY expr ';' { RIP_CFG->infinity = $3; }
| rip_cfg PORT expr ';' { RIP_CFG->port = $3; }
| rip_cfg PERIOD expr ';' { RIP_CFG->period = $3; }
| rip_cfg GARBAGE TIME expr ';' { RIP_CFG->garbage_time = $4; }
| rip_cfg TIMEOUT TIME expr ';' { RIP_CFG->timeout_time = $4; }
| rip_cfg AUTHENTICATION rip_auth ';' {RIP_CFG->authtype = $3; }
| rip_cfg password_list ';'
| rip_cfg HONOR ALWAYS ';' { RIP_CFG->honor = HO_ALWAYS; }
| rip_cfg HONOR NEIGHBOR ';' { RIP_CFG->honor = HO_NEIGHBOR; }
| rip_cfg HONOR NEVER ';' { RIP_CFG->honor = HO_NEVER; }
| rip_cfg INTERFACE rip_iface ';'
;
rip_auth:
PLAINTEXT { $$=AT_PLAINTEXT; }
| MD5 { $$=AT_MD5; }
| NONE { $$=AT_NONE; }
;
rip_mode:
BROADCAST { $$=IM_BROADCAST; }
| MULTICAST { $$=0; }
| QUIET { $$=IM_QUIET; }
| NOLISTEN { $$=IM_NOLISTEN; }
| VERSION1 { $$=IM_VERSION1 | IM_BROADCAST; }
;
rip_iface_item:
| METRIC expr { RIP_IPATT->metric = $2; }
| MODE rip_mode { RIP_IPATT->mode |= $2; }
| TX tos { RIP_IPATT->tx_tos = $2; }
| TX PRIORITY expr { RIP_IPATT->tx_priority = $3; }
| TTL SECURITY bool { RIP_IPATT->ttl_security = $3; }
| TTL SECURITY TX ONLY { RIP_IPATT->ttl_security = 2; }
;
rip_iface_opts:
/* empty */
| rip_iface_opts rip_iface_item ';'
;
rip_iface_opt_list:
/* empty */
| '{' rip_iface_opts '}'
;
rip_iface_init:
/* EMPTY */ {
this_ipatt = cfg_allocz(sizeof(struct rip_patt));
add_tail(&RIP_CFG->iface_list, NODE this_ipatt);
init_list(&this_ipatt->ipn_list);
RIP_IPATT->metric = 1;
RIP_IPATT->tx_tos = IP_PREC_INTERNET_CONTROL;
RIP_IPATT->tx_priority = sk_priority_control;
RIP_IPATT->ttl_security = RIP_DEFAULT_TTL_SECURITY;
}
;
rip_iface:
rip_iface_init iface_patt_list rip_iface_opt_list
;
CF_ADDTO(dynamic_attr, RIP_METRIC { $$ = f_new_dynamic_attr(EAF_TYPE_INT | EAF_TEMP, T_INT, EA_RIP_METRIC); })
CF_ADDTO(dynamic_attr, RIP_TAG { $$ = f_new_dynamic_attr(EAF_TYPE_INT | EAF_TEMP, T_INT, EA_RIP_TAG); })
CF_CODE
CF_END