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Make RA without DHCPv6 possible.

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This commit is contained in:
Simon Kelley
2012-02-27 17:42:38 +00:00
parent 58dc02ebf2
commit 843c96b4b3
8 changed files with 168 additions and 123 deletions
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88
src/dhcp6.c
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@@ -24,14 +24,6 @@ struct iface_param {
int ind;
};
struct listen_param {
int fd_or_iface;
struct listen_param *next;
};
static int join_multicast(struct in6_addr *local, int prefix,
int scope, int if_index, int dad, void *vparam);
static int complete_context6(struct in6_addr *local, int prefix,
int scope, int if_index, int dad, void *vparam);
@@ -41,7 +33,6 @@ void dhcp6_init(void)
{
int fd;
struct sockaddr_in6 saddr;
struct listen_param *listenp, listen;
#if defined(IP_TOS) && defined(IPTOS_CLASS_CS6)
int class = IPTOS_CLASS_CS6;
#endif
@@ -65,88 +56,9 @@ void dhcp6_init(void)
if (bind(fd, (struct sockaddr *)&saddr, sizeof(struct sockaddr_in6)))
die(_("failed to bind DHCPv6 server socket: %s"), NULL, EC_BADNET);
/* join multicast groups on each interface we're interested in */
listen.fd_or_iface = fd;
listen.next = NULL;
if (!iface_enumerate(AF_INET6, &listen, join_multicast))
die(_("failed to join DHCPv6 multicast group: %s"), NULL, EC_BADNET);
for (listenp = listen.next; listenp; )
{
struct listen_param *tmp = listenp->next;
free(listenp);
listenp = tmp;
}
daemon->dhcp6fd = fd;
}
static int join_multicast(struct in6_addr *local, int prefix,
int scope, int if_index, int dad, void *vparam)
{
char ifrn_name[IFNAMSIZ];
struct ipv6_mreq mreq;
struct listen_param *listenp, *param = vparam;
int fd = param->fd_or_iface;
struct dhcp_context *context;
struct iname *tmp;
(void)prefix;
(void)scope;
(void)dad;
/* record which interfaces we join on, so
that we do it at most one per interface, even when they
have multiple addresses */
for (listenp = param->next; listenp; listenp = listenp->next)
if (if_index == listenp->fd_or_iface)
return 1;
if (!indextoname(fd, if_index, ifrn_name))
return 0;
/* Are we doing DHCP on this interface? */
if (!iface_check(AF_INET6, (struct all_addr *)local, ifrn_name))
return 1;
for (tmp = daemon->dhcp_except; tmp; tmp = tmp->next)
if (tmp->name && (strcmp(tmp->name, ifrn_name) == 0))
return 1;
/* weird libvirt-inspired access control */
for (context = daemon->dhcp6; context; context = context->next)
if (!context->interface || strcmp(context->interface, ifrn_name) == 0)
break;
if (!context)
return 1;
mreq.ipv6mr_interface = if_index;
inet_pton(AF_INET6, ALL_RELAY_AGENTS_AND_SERVERS, &mreq.ipv6mr_multiaddr);
if (setsockopt(fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) == -1)
return 0;
inet_pton(AF_INET6, ALL_SERVERS, &mreq.ipv6mr_multiaddr);
if (setsockopt(fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) == -1)
return 0;
inet_pton(AF_INET6, ALL_ROUTERS, &mreq.ipv6mr_multiaddr);
if (daemon->icmp6fd != -1 &&
setsockopt(daemon->icmp6fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) == -1)
return 0;
listenp = whine_malloc(sizeof(struct listen_param));
listenp->fd_or_iface = if_index;
listenp->next = param->next;
param->next = listenp;
return 1;
}
void dhcp6_packet(time_t now)
{
struct dhcp_context *context;