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correct loopback address test 

correct addr add/del handling
This commit is contained in:
kefren 2013-07-12 08:55:52 +00:00
parent 3cb099121d
commit 0e52e04b03
2 changed files with 30 additions and 18 deletions
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7
usr.sbin/ldpd/fsm.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: fsm.c,v 1.12 2013/07/11 05:55:13 kefren Exp $ */
/* $NetBSD: fsm.c,v 1.13 2013/07/12 08:55:52 kefren Exp $ */
/*-
* Copyright (c) 2010 The NetBSD Foundation, Inc.
@ -186,10 +186,11 @@ build_address_list_tlv(void)
ia = &t->a_address;
for (adrcount = 0, ifb = ifa; ifb; ifb = ifb->ifa_next) {
if ((ifb->ifa_addr->sa_family != AF_INET) ||
(!(ifb->ifa_flags & IFF_UP)) ||
(ifb->ifa_flags & IFF_LOOPBACK))
(!(ifb->ifa_flags & IFF_UP)))
continue;
sa = (struct sockaddr_in *) ifb->ifa_addr;
if (ntohl(sa->sin_addr.s_addr) >> 24 == IN_LOOPBACKNET)
continue;
memcpy(&ia[adrcount], &sa->sin_addr, sizeof(struct in_addr));
adrcount++;
}

41
usr.sbin/ldpd/mpls_routes.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: mpls_routes.c,v 1.13 2013/07/11 18:02:03 kefren Exp $ */
/* $NetBSD: mpls_routes.c,v 1.14 2013/07/12 08:55:52 kefren Exp $ */
/*-
* Copyright (c) 2010 The NetBSD Foundation, Inc.
@ -69,18 +69,19 @@ static int read_route_socket(char *, int);
void mask_addr(union sockunion *);
int compare_sockunion(const union sockunion *, const union sockunion *);
char * mpls_ntoa(union mpls_shim);
static int check_if_addr_updown(struct rt_msg * rg);
static int check_if_addr_updown(struct rt_msg *, uint);
extern struct sockaddr mplssockaddr;
/* Many lines inspired or shamelessly stolen from sbin/route/route.c */
#define NEXTADDR(u) \
do { l = RT_ROUNDUP(u->sa.sa_len); memcpy(cp, u, l); cp += l; } while(0);
do { l = RT_ROUNDUP(u->sa.sa_len); memcpy(cp, u, l); cp += l;} while(0);
#define NEXTADDR2(u) \
do { l = RT_ROUNDUP(u.sa_len); memcpy(cp, &u, l); cp += l; } while(0);
#define GETNEXT(sunion) \
(union sockunion *) ((char *) (sunion) + RT_ROUNDUP((sunion)->sa.sa_len))
(union sockunion *) ((char *) (sunion) + \
RT_ROUNDUP((sunion)->sa.sa_len))
static int
read_route_socket(char *s, int max)
@ -581,13 +582,16 @@ check_route(struct rt_msg * rg, uint rlen)
gate[0] = 0;
pref[0] = 0;
if (rlen <= sizeof(struct rt_msghdr) ||
rg->m_rtm.rtm_version != RTM_VERSION)
if (rlen < 3 || rg->m_rtm.rtm_version != RTM_VERSION)
return LDP_E_ROUTE_ERROR;
if (rg->m_rtm.rtm_type == RTM_NEWADDR ||
rg->m_rtm.rtm_type == RTM_DELADDR)
return check_if_addr_updown(rg);
return check_if_addr_updown(rg, rlen);
if (rlen < sizeof(struct rt_msghdr))
return LDP_E_ROUTE_ERROR;
if (rg->m_rtm.rtm_pid == getpid() ||
((rg->m_rtm.rtm_flags & RTF_DONE) == 0))
return LDP_E_OK;
@ -719,6 +723,9 @@ check_route(struct rt_msg * rg, uint rlen)
case RTM_LOSING:
strlcpy(oper, "losing", 20);
break;
case RTM_REDIRECT:
strlcpy(oper, "redirect", 20);
break;
case RTM_NEWADDR:
strlcpy(oper, "new address", 20);
break;
@ -726,7 +733,7 @@ check_route(struct rt_msg * rg, uint rlen)
strlcpy(oper, "del address", 20);
break;
default:
snprintf(oper, 50, "unknown 0x%X operation",
snprintf(oper, sizeof(oper), "unknown 0x%X operation",
rg->m_rtm.rtm_type);
}
@ -742,25 +749,29 @@ check_route(struct rt_msg * rg, uint rlen)
* Checks NEWADDR and DELADDR messages and sends announcements accordingly
*/
static int
check_if_addr_updown(struct rt_msg * rg)
check_if_addr_updown(struct rt_msg * rg, uint rlen)
{
union sockunion *ifa, *netmask;
struct ldp_peer *p;
struct address_list_tlv al_tlv;
struct ifa_msghdr *msghdr = (struct ifa_msghdr *)&rg->m_rtm;
if ((rg->m_rtm.rtm_addrs & RTA_NETMASK) == 0 ||
(rg->m_rtm.rtm_addrs & RTA_IFA) == 0)
if (rlen < sizeof(struct ifa_msghdr) ||
(msghdr->ifam_addrs & RTA_NETMASK) == 0 ||
(msghdr->ifam_addrs & RTA_IFA) == 0)
return LDP_E_ROUTE_ERROR;
ifa = netmask = (union sockunion *) rg->m_space;
/* we should have RTA_NETMASK, RTA_IFP, RTA_IFA and RTA_BRD */
ifa = netmask = (union sockunion *)(msghdr + 1);
if (netmask->sa.sa_family != AF_INET)
return LDP_E_OK;
if (rg->m_rtm.rtm_addrs & RTA_IFP)
ifa = GETNEXT(netmask);
if (msghdr->ifam_addrs & RTA_IFP)
ifa = GETNEXT(ifa);
ifa = GETNEXT(ifa);
if (ifa->sa.sa_family != AF_INET)
if (ifa->sa.sa_family != AF_INET ||
ntohl(ifa->sin.sin_addr.s_addr) >> 24 == IN_LOOPBACKNET)
return LDP_E_OK;
memset(&al_tlv, 0, sizeof(al_tlv));