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https://gitlab.nic.cz/labs/bird.git
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fc1e3211b1
Add 'ignore max length' option to RPKI protocol, which ignores received max length in ROA records and instead uses max value (32 or 128). This may be useful for implementing loose RPKI check for blackholes.
150 lines
3.6 KiB
Plaintext
150 lines
3.6 KiB
Plaintext
/*
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* BIRD -- The Resource Public Key Infrastructure (RPKI) to Router Protocol
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*
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* (c) 2015 CZ.NIC
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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CF_HDR
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#include "proto/rpki/rpki.h"
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CF_DEFINES
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#define RPKI_CFG ((struct rpki_config *) this_proto)
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#define RPKI_TR_SSH_CFG ((struct rpki_tr_ssh_config *) RPKI_CFG->tr_config.spec)
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static void
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rpki_check_unused_hostname(void)
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{
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if (RPKI_CFG->hostname != NULL)
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cf_error("Only one cache server per protocol allowed");
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}
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static void
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rpki_check_unused_transport(void)
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{
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if (RPKI_CFG->tr_config.spec != NULL)
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cf_error("At the most one transport per protocol allowed");
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}
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CF_DECLS
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CF_KEYWORDS(RPKI, REMOTE, BIRD, PRIVATE, PUBLIC, KEY, TCP, SSH, TRANSPORT, USER,
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RETRY, REFRESH, EXPIRE, KEEP, IGNORE, MAX, LENGTH)
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%type <i> rpki_keep_interval
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CF_GRAMMAR
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proto: rpki_proto ;
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rpki_proto_start: proto_start RPKI {
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this_proto = proto_config_new(&proto_rpki, $1);
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RPKI_CFG->retry_interval = RPKI_RETRY_INTERVAL;
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RPKI_CFG->refresh_interval = RPKI_REFRESH_INTERVAL;
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RPKI_CFG->expire_interval = RPKI_EXPIRE_INTERVAL;
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};
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rpki_proto: rpki_proto_start proto_name '{' rpki_proto_opts '}' { rpki_check_config(RPKI_CFG); };
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rpki_proto_opts:
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/* empty */
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| rpki_proto_opts rpki_proto_item ';'
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;
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rpki_proto_item:
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proto_item
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| proto_channel
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| REMOTE rpki_cache_addr
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| REMOTE rpki_cache_addr rpki_proto_item_port
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| rpki_proto_item_port
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| TRANSPORT rpki_transport
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| REFRESH rpki_keep_interval expr {
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if (rpki_check_refresh_interval($3))
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cf_error(rpki_check_refresh_interval($3));
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RPKI_CFG->refresh_interval = $3;
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RPKI_CFG->keep_refresh_interval = $2;
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}
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| RETRY rpki_keep_interval expr {
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if (rpki_check_retry_interval($3))
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cf_error(rpki_check_retry_interval($3));
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RPKI_CFG->retry_interval = $3;
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RPKI_CFG->keep_retry_interval = $2;
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}
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| EXPIRE rpki_keep_interval expr {
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if (rpki_check_expire_interval($3))
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cf_error(rpki_check_expire_interval($3));
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RPKI_CFG->expire_interval = $3;
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RPKI_CFG->keep_expire_interval = $2;
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}
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| IGNORE MAX LENGTH bool { RPKI_CFG->ignore_max_length = $4; }
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;
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rpki_keep_interval:
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/* empty */ { $$ = 0; }
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| KEEP { $$ = 1; }
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;
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rpki_proto_item_port: PORT expr { check_u16($2); RPKI_CFG->port = $2; };
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rpki_cache_addr:
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text {
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rpki_check_unused_hostname();
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RPKI_CFG->hostname = $1;
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}
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| ipa {
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rpki_check_unused_hostname();
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RPKI_CFG->ip = $1;
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/* Ensure hostname is filled */
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char *hostname = cfg_allocz(INET6_ADDRSTRLEN + 1);
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bsnprintf(hostname, INET6_ADDRSTRLEN+1, "%I", RPKI_CFG->ip);
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RPKI_CFG->hostname = hostname;
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}
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;
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rpki_transport:
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TCP rpki_transport_tcp_init
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| SSH rpki_transport_ssh_init '{' rpki_transport_ssh_opts '}' rpki_transport_ssh_check
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;
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rpki_transport_tcp_init:
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{
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rpki_check_unused_transport();
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RPKI_CFG->tr_config.spec = cfg_allocz(sizeof(struct rpki_tr_tcp_config));
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RPKI_CFG->tr_config.type = RPKI_TR_TCP;
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};
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rpki_transport_ssh_init:
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{
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#if HAVE_LIBSSH
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rpki_check_unused_transport();
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RPKI_CFG->tr_config.spec = cfg_allocz(sizeof(struct rpki_tr_ssh_config));
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RPKI_CFG->tr_config.type = RPKI_TR_SSH;
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#else
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cf_error("This build doesn't support SSH");
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#endif
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};
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rpki_transport_ssh_opts:
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/* empty */
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| rpki_transport_ssh_opts rpki_transport_ssh_item ';'
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;
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rpki_transport_ssh_item:
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BIRD PRIVATE KEY text { RPKI_TR_SSH_CFG->bird_private_key = $4; }
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| REMOTE PUBLIC KEY text { RPKI_TR_SSH_CFG->cache_public_key = $4; }
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| USER text { RPKI_TR_SSH_CFG->user = $2; }
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;
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rpki_transport_ssh_check:
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{
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if (RPKI_TR_SSH_CFG->user == NULL)
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cf_error("User must be set");
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};
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CF_CODE
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CF_END
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