static isc_result_t
linux_if_inet6_current(isc_interfaceiter_t *iter) {
char address[33];
char name[IF_NAMESIZE+1];
struct in6_addr addr6;
int ifindex, prefix, flag3, flag4;
int res;
unsigned int i;
if (iter->valid != ISC_R_SUCCESS)
return (iter->valid);
if (iter->proc == NULL) {
isc_log_write(isc_lctx, ISC_LOGCATEGORY_GENERAL,
ISC_LOGMODULE_INTERFACE, ISC_LOG_ERROR,
"/proc/net/if_inet6:iter->proc == NULL");
return (ISC_R_FAILURE);
}
res = sscanf(iter->entry, "%32[a-f0-9] %x %x %x %x %16s\n",
address, &ifindex, &prefix, &flag3, &flag4, name);
if (res != 6) {
isc_log_write(isc_lctx, ISC_LOGCATEGORY_GENERAL,
ISC_LOGMODULE_INTERFACE, ISC_LOG_ERROR,
"/proc/net/if_inet6:sscanf() -> %d (expected 6)",
res);
return (ISC_R_FAILURE);
}
if (strlen(address) != 32) {
isc_log_write(isc_lctx, ISC_LOGCATEGORY_GENERAL,
ISC_LOGMODULE_INTERFACE, ISC_LOG_ERROR,
"/proc/net/if_inet6:strlen(%s) != 32", address);
return (ISC_R_FAILURE);
}
for (i = 0; i < 16; i++) {
unsigned char byte;
static const char hex[] = "0123456789abcdef";
byte = ((strchr(hex, address[i * 2]) - hex) << 4) |
(strchr(hex, address[i * 2 + 1]) - hex);
addr6.s6_addr[i] = byte;
}
iter->current.af = AF_INET6;
iter->current.flags = INTERFACE_F_UP;
isc_netaddr_fromin6(&iter->current.address, &addr6);
if (isc_netaddr_islinklocal(&iter->current.address)) {
isc_netaddr_setzone(&iter->current.address,
(isc_uint32_t)ifindex);
}
for (i = 0; i < 16; i++) {
if (prefix > 8) {
addr6.s6_addr[i] = 0xff;
prefix -= 8;
} else {
addr6.s6_addr[i] = (0xff << (8 - prefix)) & 0xff;
prefix = 0;
}
}
isc_netaddr_fromin6(&iter->current.netmask, &addr6);
strncpy(iter->current.name, name, sizeof(iter->current.name));
return (ISC_R_SUCCESS);
}
isc_boolean_t
isc_sockaddr_islinklocal(const isc_sockaddr_t *sockaddr) {
isc_netaddr_t netaddr;
if (sockaddr->type.sa.sa_family == AF_INET6) {
isc_netaddr_fromsockaddr(&netaddr, sockaddr);
return (isc_netaddr_islinklocal(&netaddr));
}
return (ISC_FALSE);
}
static isc_result_t
internal_current6(isc_interfaceiter_t *iter) {
struct LIFREQ *ifrp;
struct LIFREQ lifreq;
int family;
char strbuf[ISC_STRERRORSIZE];
int fd;
REQUIRE(VALID_IFITER(iter));
if (iter->result6 != ISC_R_SUCCESS)
return (iter->result6);
REQUIRE(iter->pos6 < (unsigned int) iter->lifc.lifc_len);
ifrp = (void *)((char *)iter->lifc.lifc_req + iter->pos6);
memset(&lifreq, 0, sizeof(lifreq));
memcpy(&lifreq, ifrp, sizeof(lifreq));
family = lifreq.lifr_addr.ss_family;
#ifdef ISC_PLATFORM_HAVEIPV6
if (family != AF_INET && family != AF_INET6)
#else
if (family != AF_INET)
#endif
return (ISC_R_IGNORE);
memset(&iter->current, 0, sizeof(iter->current));
iter->current.af = family;
INSIST(sizeof(lifreq.lifr_name) <= sizeof(iter->current.name));
memset(iter->current.name, 0, sizeof(iter->current.name));
memcpy(iter->current.name, lifreq.lifr_name, sizeof(lifreq.lifr_name));
get_addr(family, &iter->current.address,
(struct sockaddr *)&lifreq.lifr_addr, lifreq.lifr_name);
if (isc_netaddr_islinklocal(&iter->current.address))
isc_netaddr_setzone(&iter->current.address,
(isc_uint32_t)lifreq.lifr_index);
/*
* If the interface does not have a address ignore it.
*/
switch (family) {
case AF_INET:
if (iter->current.address.type.in.s_addr == htonl(INADDR_ANY))
return (ISC_R_IGNORE);
break;
case AF_INET6:
if (memcmp(&iter->current.address.type.in6, &in6addr_any,
sizeof(in6addr_any)) == 0)
return (ISC_R_IGNORE);
break;
}
/*
* Get interface flags.
*/
iter->current.flags = 0;
if (family == AF_INET6)
fd = iter->socket6;
else
fd = iter->socket;
/*
* Ignore the HP/UX warning about "integer overflow during
* conversion. It comes from its own macro definition,
* and is really hard to shut up.
*/
if (isc_ioctl(fd, SIOCGLIFFLAGS, (char *) &lifreq) < 0) {
isc__strerror(errno, strbuf, sizeof(strbuf));
UNEXPECTED_ERROR(__FILE__, __LINE__,
"%s: getting interface flags: %s",
lifreq.lifr_name, strbuf);
return (ISC_R_IGNORE);
}
if ((lifreq.lifr_flags & IFF_UP) != 0)
iter->current.flags |= INTERFACE_F_UP;
#ifdef IFF_POINTOPOINT
if ((lifreq.lifr_flags & IFF_POINTOPOINT) != 0)
iter->current.flags |= INTERFACE_F_POINTTOPOINT;
#endif
if ((lifreq.lifr_flags & IFF_LOOPBACK) != 0)
iter->current.flags |= INTERFACE_F_LOOPBACK;
if ((lifreq.lifr_flags & IFF_BROADCAST) != 0) {
iter->current.flags |= INTERFACE_F_BROADCAST;
}
#ifdef IFF_MULTICAST
if ((lifreq.lifr_flags & IFF_MULTICAST) != 0) {
iter->current.flags |= INTERFACE_F_MULTICAST;
}
#endif
#ifdef IFF_POINTOPOINT
/*
* If the interface is point-to-point, get the destination address.
*/
if ((iter->current.flags & INTERFACE_F_POINTTOPOINT) != 0) {
/*
* Ignore the HP/UX warning about "integer overflow during
* conversion. It comes from its own macro definition,
* and is really hard to shut up.
*/
if (isc_ioctl(fd, SIOCGLIFDSTADDR, (char *)&lifreq)
< 0) {
isc__strerror(errno, strbuf, sizeof(strbuf));
UNEXPECTED_ERROR(__FILE__, __LINE__,
isc_msgcat_get(isc_msgcat,
ISC_MSGSET_IFITERIOCTL,
ISC_MSG_GETDESTADDR,
"%s: getting "
"destination address: %s"),
lifreq.lifr_name, strbuf);
return (ISC_R_IGNORE);
}
get_addr(family, &iter->current.dstaddress,
(struct sockaddr *)&lifreq.lifr_dstaddr,
lifreq.lifr_name);
}
#endif
#ifdef SIOCGLIFBRDADDR
if ((iter->current.flags & INTERFACE_F_BROADCAST) != 0) {
/*
* Ignore the HP/UX warning about "integer overflow during
* conversion. It comes from its own macro definition,
* and is really hard to shut up.
*/
if (isc_ioctl(iter->socket, SIOCGLIFBRDADDR, (char *)&lifreq)
< 0) {
isc__strerror(errno, strbuf, sizeof(strbuf));
UNEXPECTED_ERROR(__FILE__, __LINE__,
isc_msgcat_get(isc_msgcat,
ISC_MSGSET_IFITERIOCTL,
ISC_MSG_GETBCSTADDR,
"%s: getting "
"broadcast address: %s"),
lifreq.lifr_name, strbuf);
return (ISC_R_IGNORE);
}
get_addr(family, &iter->current.broadcast,
(struct sockaddr *)&lifreq.lifr_broadaddr,
lifreq.lifr_name);
}
#endif /* SIOCGLIFBRDADDR */
/*
* Get the network mask. Netmask already zeroed.
*/
memset(&lifreq, 0, sizeof(lifreq));
memcpy(&lifreq, ifrp, sizeof(lifreq));
#ifdef lifr_addrlen
/*
* Special case: if the system provides lifr_addrlen member, the
* netmask of an IPv6 address can be derived from the length, since
* an IPv6 address always has a contiguous mask.
*/
if (family == AF_INET6) {
int i, bits;
iter->current.netmask.family = family;
for (i = 0; i < lifreq.lifr_addrlen; i += 8) {
bits = lifreq.lifr_addrlen - i;
bits = (bits < 8) ? (8 - bits) : 0;
iter->current.netmask.type.in6.s6_addr[i / 8] =
(~0 << bits) & 0xff;
}
#ifdef ISC_PLATFORM_HAVEIFNAMETOINDEX
iter->current.ifindex = if_nametoindex(iter->current.name);
#endif
return (ISC_R_SUCCESS);
}
#endif
/*
* Ignore the HP/UX warning about "integer overflow during
* conversion. It comes from its own macro definition,
* and is really hard to shut up.
*/
if (isc_ioctl(fd, SIOCGLIFNETMASK, (char *)&lifreq) < 0) {
isc__strerror(errno, strbuf, sizeof(strbuf));
UNEXPECTED_ERROR(__FILE__, __LINE__,
isc_msgcat_get(isc_msgcat,
ISC_MSGSET_IFITERIOCTL,
ISC_MSG_GETNETMASK,
"%s: getting netmask: %s"),
lifreq.lifr_name, strbuf);
return (ISC_R_IGNORE);
}
get_addr(family, &iter->current.netmask,
(struct sockaddr *)&lifreq.lifr_addr, lifreq.lifr_name);
#ifdef ISC_PLATFORM_HAVEIFNAMETOINDEX
iter->current.ifindex = if_nametoindex(iter->current.name);
#endif
return (ISC_R_SUCCESS);
}
