/**
* Break the netmaks string and convert them into network_pair elements in
* the local_networks array. IP's are in network order.
*/
void
parse_netmasks(const char *str)
{
char **masks = g_strsplit(str, ";", 0);
char *p;
guint32 mask_div;
int i;
free_networks();
if (!masks)
return;
for (i = 0; masks[i]; i++)
/* just count */ ;
number_local_networks = i;
if (i == 0) {
g_strfreev(masks);
return;
}
local_networks = g_malloc(i * sizeof *local_networks);
for (i = 0; masks[i]; i++) {
/* Network is of the form ip/mask or ip/bits */
if ((p = strchr(masks[i], '/')) && *p) {
*p++ = '\0';
if (strchr(p, '.')) {
/* get the network address from the user */
if (!string_to_ip_strict(p, &local_networks[i].mask, NULL))
g_warning("parse_netmasks(): Invalid netmask: \"%s\"", p);
}
else {
int error;
mask_div = parse_uint32(p, NULL, 10, &error);
mask_div = MIN(32, mask_div);
if (error)
g_warning("parse_netmasks(): "
"Invalid CIDR prefixlen: \"%s\"", p);
else
local_networks[i].mask = (guint32) -1 << (32 - mask_div);
}
}
else {
/* Assume single-host */
local_networks[i].mask = -1; /* 255.255.255.255 */
}
/* get the network address from the user */
if (!string_to_ip_strict(masks[i], &local_networks[i].net, NULL))
g_warning("parse_netmasks(): Invalid netmask: \"%s\"", masks[i]);
}
g_strfreev(masks);
}
void
free_rdomains(struct rdomain_head *rdomains)
{
struct rdomain *rd;
while ((rd = SIMPLEQ_FIRST(rdomains)) != NULL) {
SIMPLEQ_REMOVE_HEAD(rdomains, entry);
filterset_free(&rd->export);
filterset_free(&rd->import);
free_networks(&rd->net_l);
free(rd);
}
}
int
merge_config(struct bgpd_config *xconf, struct bgpd_config *conf,
struct peer *peer_l)
{
struct listen_addr *nla, *ola, *next;
struct network *n;
struct rdomain *rd;
/*
* merge the freshly parsed conf into the running xconf
*/
if (!conf->as) {
log_warnx("configuration error: AS not given");
return (1);
}
if ((conf->flags & BGPD_FLAG_REFLECTOR) && conf->clusterid == 0)
conf->clusterid = conf->bgpid;
/* adjust FIB priority if changed */
/* if xconf is uninitialized we get RTP_NONE */
if (xconf->fib_priority != conf->fib_priority) {
kr_fib_decouple_all(xconf->fib_priority);
kr_fib_update_prio_all(conf->fib_priority);
kr_fib_couple_all(conf->fib_priority);
}
/* take over the easy config changes */
xconf->flags = conf->flags;
xconf->log = conf->log;
xconf->bgpid = conf->bgpid;
xconf->clusterid = conf->clusterid;
xconf->as = conf->as;
xconf->short_as = conf->short_as;
xconf->holdtime = conf->holdtime;
xconf->min_holdtime = conf->min_holdtime;
xconf->connectretry = conf->connectretry;
xconf->fib_priority = conf->fib_priority;
/* clear old control sockets and use new */
free(xconf->csock);
free(xconf->rcsock);
xconf->csock = conf->csock;
xconf->rcsock = conf->rcsock;
/* set old one to NULL so we don't double free */
conf->csock = NULL;
conf->rcsock = NULL;
/* clear all current filters and take over the new ones */
filterlist_free(xconf->filters);
xconf->filters = conf->filters;
conf->filters = NULL;
/* switch the network statements, but first remove the old ones */
free_networks(&xconf->networks);
while ((n = TAILQ_FIRST(&conf->networks)) != NULL) {
TAILQ_REMOVE(&conf->networks, n, entry);
TAILQ_INSERT_TAIL(&xconf->networks, n, entry);
}
/* switch the rdomain configs, first remove the old ones */
free_rdomains(&xconf->rdomains);
while ((rd = SIMPLEQ_FIRST(&conf->rdomains)) != NULL) {
SIMPLEQ_REMOVE_HEAD(&conf->rdomains, entry);
SIMPLEQ_INSERT_TAIL(&xconf->rdomains, rd, entry);
}
/*
* merge new listeners:
* -flag all existing ones as to be deleted
* -those that are in both new and old: flag to keep
* -new ones get inserted and flagged as to reinit
* -remove all that are still flagged for deletion
*/
TAILQ_FOREACH(nla, xconf->listen_addrs, entry)
nla->reconf = RECONF_DELETE;
/* no new listeners? preserve default ones */
if (TAILQ_EMPTY(conf->listen_addrs))
TAILQ_FOREACH(ola, xconf->listen_addrs, entry)
if (ola->flags & DEFAULT_LISTENER)
ola->reconf = RECONF_KEEP;
/* else loop over listeners and merge configs */
for (nla = TAILQ_FIRST(conf->listen_addrs); nla != NULL; nla = next) {
next = TAILQ_NEXT(nla, entry);
TAILQ_FOREACH(ola, xconf->listen_addrs, entry)
if (!memcmp(&nla->sa, &ola->sa, sizeof(nla->sa)))
break;
if (ola == NULL) {
/* new listener, copy over */
TAILQ_REMOVE(conf->listen_addrs, nla, entry);
TAILQ_INSERT_TAIL(xconf->listen_addrs, nla, entry);
nla->reconf = RECONF_REINIT;
} else /* exists, just flag */
ola->reconf = RECONF_KEEP;
}
/* finally clean up the original list and remove all stale entires */
for (nla = TAILQ_FIRST(xconf->listen_addrs); nla != NULL; nla = next) {
next = TAILQ_NEXT(nla, entry);
if (nla->reconf == RECONF_DELETE) {
TAILQ_REMOVE(xconf->listen_addrs, nla, entry);
free(nla);
}
}
/* conf is merged so free it */
free_config(conf);
return (0);
}
