static void handle_client_request(void *addr, void *data, size_t len,
struct interface *iface);
-static struct odhcpd_event dhcpv6_event = {{.fd = -1}, handle_dhcpv6};
-
// Create socket and register events
int init_dhcpv6(void)
{
- int sock = socket(AF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, IPPROTO_UDP);
- if (sock < 0) {
- syslog(LOG_ERR, "Failed to create DHCPv6 server socket: %s",
- strerror(errno));
- return -1;
- }
-
- // Basic IPv6 configuration
- int val = 1;
- setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, &val, sizeof(val));
- setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
- setsockopt(sock, IPPROTO_IPV6, IPV6_RECVPKTINFO, &val, sizeof(val));
-
- val = DHCPV6_HOP_COUNT_LIMIT;
- setsockopt(sock, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &val, sizeof(val));
-
- val = 0;
- setsockopt(sock, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, &val, sizeof(val));
+ dhcpv6_ia_init();
+ return 0;
+}
- struct sockaddr_in6 bind_addr = {AF_INET6, htons(DHCPV6_SERVER_PORT),
- 0, IN6ADDR_ANY_INIT, 0};
- if (bind(sock, (struct sockaddr*)&bind_addr, sizeof(bind_addr))) {
- syslog(LOG_ERR, "Failed to open DHCPv6 server socket: %s",
- strerror(errno));
- return -1;
+int setup_dhcpv6_interface(struct interface *iface, bool enable)
+{
+ if (iface->dhcpv6_event.uloop.fd > 0) {
+ uloop_fd_delete(&iface->dhcpv6_event.uloop);
+ close(iface->dhcpv6_event.uloop.fd);
+ iface->dhcpv6_event.uloop.fd = -1;
}
- dhcpv6_event.uloop.fd = sock;
- odhcpd_register(&dhcpv6_event);
+ // Configure multicast settings
+ if (enable && iface->dhcpv6 && !iface->master) {
+ int sock = socket(AF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, IPPROTO_UDP);
+ if (sock < 0) {
+ syslog(LOG_ERR, "Failed to create DHCPv6 server socket: %s",
+ strerror(errno));
+ return -1;
+ }
- dhcpv6_ia_init(dhcpv6_event.uloop.fd);
+ // Basic IPv6 configuration
+ setsockopt(sock, SOL_SOCKET, SO_BINDTODEVICE, iface->ifname, strlen(iface->ifname));
- return 0;
-}
+ int val = 1;
+ setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, &val, sizeof(val));
+ setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
+ setsockopt(sock, IPPROTO_IPV6, IPV6_RECVPKTINFO, &val, sizeof(val));
+ val = DHCPV6_HOP_COUNT_LIMIT;
+ setsockopt(sock, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &val, sizeof(val));
-int setup_dhcpv6_interface(struct interface *iface, bool enable)
-{
- // Configure multicast settings
- struct ipv6_mreq relay = {ALL_DHCPV6_RELAYS, iface->ifindex};
- struct ipv6_mreq server = {ALL_DHCPV6_SERVERS, iface->ifindex};
+ val = 0;
+ setsockopt(sock, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, &val, sizeof(val));
- setsockopt(dhcpv6_event.uloop.fd, IPPROTO_IPV6,
- IPV6_DROP_MEMBERSHIP, &relay, sizeof(relay));
- setsockopt(dhcpv6_event.uloop.fd, IPPROTO_IPV6,
- IPV6_DROP_MEMBERSHIP, &server, sizeof(server));
+ struct sockaddr_in6 bind_addr = {AF_INET6, htons(DHCPV6_SERVER_PORT),
+ 0, IN6ADDR_ANY_INIT, 0};
- if (enable && iface->dhcpv6 && !iface->master) {
- setsockopt(dhcpv6_event.uloop.fd, IPPROTO_IPV6,
- IPV6_ADD_MEMBERSHIP, &relay, sizeof(relay));
+ if (bind(sock, (struct sockaddr*)&bind_addr, sizeof(bind_addr))) {
+ syslog(LOG_ERR, "Failed to open DHCPv6 server socket: %s",
+ strerror(errno));
+ return -1;
+ }
+
+ struct ipv6_mreq relay = {ALL_DHCPV6_RELAYS, iface->ifindex};
+ struct ipv6_mreq server = {ALL_DHCPV6_SERVERS, iface->ifindex};
+ setsockopt(sock, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, &relay, sizeof(relay));
if (iface->dhcpv6 == RELAYD_SERVER)
- setsockopt(dhcpv6_event.uloop.fd, IPPROTO_IPV6,
- IPV6_ADD_MEMBERSHIP, &server, sizeof(server));
+ setsockopt(sock, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, &server, sizeof(server));
+
+ iface->dhcpv6_event.uloop.fd = sock;
+ iface->dhcpv6_event.handle_dgram = handle_dhcpv6;
+ odhcpd_register(&iface->dhcpv6_event);
}
return setup_dhcpv6_ia_interface(iface, enable);
static void handle_nested_message(uint8_t *data, size_t len,
- uint8_t **opts, uint8_t **end, struct iovec iov[6])
+ uint8_t **opts, uint8_t **end, struct iovec iov[9])
{
struct dhcpv6_relay_header *hdr = (struct dhcpv6_relay_header*)data;
if (iov[0].iov_base == NULL) {
uint8_t *odata;
dhcpv6_for_each_option(hdr->options, data + len, otype, olen, odata) {
if (otype == DHCPV6_OPT_RELAY_MSG) {
- iov[7].iov_base = odata + olen;
- iov[7].iov_len = (((uint8_t*)iov[0].iov_base) + iov[0].iov_len)
+ iov[9].iov_base = odata + olen;
+ iov[9].iov_len = (((uint8_t*)iov[0].iov_base) + iov[0].iov_len)
- (odata + olen);
handle_nested_message(odata, olen, opts, end, iov);
return;
uint16_t duid_type;
uint16_t hardware_type;
uint8_t mac[6];
+ uint16_t solmaxrt_type;
+ uint16_t solmaxrt_length;
+ uint32_t solmaxrt_value;
uint16_t clientid_type;
uint16_t clientid_length;
uint8_t clientid_buf[130];
.serverid_length = htons(10),
.duid_type = htons(3),
.hardware_type = htons(1),
+ .solmaxrt_type = htons(DHCPV6_OPT_SOL_MAX_RT),
+ .solmaxrt_length = htons(4),
+ .solmaxrt_value = htonl(60),
.clientid_type = htons(DHCPV6_OPT_CLIENTID),
.clientid_buf = {0}
};
} search = {htons(DHCPV6_OPT_DNS_DOMAIN), htons(search_len)};
+ struct dhcpv6_cer_id cerid = {
+#ifdef EXT_CER_ID
+ .type = htons(EXT_CER_ID),
+#endif
+ .len = htons(36),
+ .addr = iface->dhcpv6_pd_cer,
+ };
+
uint8_t pdbuf[512];
struct iovec iov[] = {{NULL, 0},
{&search, (search_len) ? sizeof(search) : 0},
{search_domain, search_len},
{pdbuf, 0},
+ {&cerid, 0},
+ {iface->dhcpv6_raw, iface->dhcpv6_raw_len},
{NULL, 0}};
uint8_t *opts = (uint8_t*)&hdr[1], *opts_end = (uint8_t*)data + len;
if (olen != ntohs(dest.serverid_length) ||
memcmp(odata, &dest.duid_type, olen))
return; // Not for us
+ } else if (iface->filter_class && otype == DHCPV6_OPT_USER_CLASS) {
+ uint8_t *c = odata, *cend = &odata[olen];
+ for (; &c[2] <= cend && &c[2 + (c[0] << 8) + c[1]] <= cend; c = &c[2 + (c[0] << 8) + c[1]]) {
+ size_t elen = strlen(iface->filter_class);
+ if (((((size_t)c[0]) << 8) | c[1]) == elen && !memcmp(&c[2], iface->filter_class, elen))
+ return; // Ignore from homenet
+ }
+ } else if (otype == DHCPV6_OPT_IA_PD) {
+#ifdef EXT_CER_ID
+ iov[7].iov_len = sizeof(cerid);
+
+ if (IN6_IS_ADDR_UNSPECIFIED(&cerid.addr)) {
+ struct odhcpd_ipaddr addrs[32];
+ ssize_t len = odhcpd_get_interface_addresses(0, addrs,
+ sizeof(addrs) / sizeof(*addrs));
+
+ for (ssize_t i = 0; i < len; ++i)
+ if (IN6_IS_ADDR_UNSPECIFIED(&cerid.addr)
+ || memcmp(&addrs[i].addr, &cerid.addr, sizeof(cerid.addr)) < 0)
+ cerid.addr = addrs[i].addr;
+ }
+#endif
}
}
if (opts[-4] != DHCPV6_MSG_INFORMATION_REQUEST) {
- iov[6].iov_len = dhcpv6_handle_ia(pdbuf, sizeof(pdbuf), iface, addr, &opts[-4], opts_end);
- if (iov[6].iov_len == 0 && opts[-4] == DHCPV6_MSG_REBIND)
+ ssize_t ialen = dhcpv6_handle_ia(pdbuf, sizeof(pdbuf), iface, addr, &opts[-4], opts_end);
+ iov[6].iov_len = ialen;
+ if (ialen < 0 || (ialen == 0 && (opts[-4] == DHCPV6_MSG_REBIND || opts[-4] == DHCPV6_MSG_CONFIRM)))
return;
}
if (iov[0].iov_len > 0) // Update length
update_nested_message(data, len, iov[1].iov_len + iov[2].iov_len +
iov[3].iov_len + iov[4].iov_len + iov[5].iov_len +
- iov[6].iov_len - (4 + opts_end - opts));
+ iov[6].iov_len + iov[7].iov_len - (4 + opts_end - opts));
- odhcpd_send(dhcpv6_event.uloop.fd, addr, iov, ARRAY_SIZE(iov), iface);
+ odhcpd_send(iface->dhcpv6_event.uloop.fd, addr, iov, ARRAY_SIZE(iov), iface);
}
}
struct iovec iov = {payload_data, payload_len};
- odhcpd_send(dhcpv6_event.uloop.fd, &target, &iov, 1, iface);
+ odhcpd_send(iface->dhcpv6_event.uloop.fd, &target, &iov, 1, iface);
}
struct sockaddr_in6 dhcpv6_servers = {AF_INET6,
htons(DHCPV6_SERVER_PORT), 0, ALL_DHCPV6_SERVERS, 0};
struct iovec iov[2] = {{&hdr, sizeof(hdr)}, {(void*)data, len}};
- odhcpd_send(dhcpv6_event.uloop.fd, &dhcpv6_servers, iov, 2, master);
+ odhcpd_send(iface->dhcpv6_event.uloop.fd, &dhcpv6_servers, iov, 2, master);
}
projects / project / odhcpd.git / blobdiff