X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fodhcpd.git;a=blobdiff_plain;f=src%2Fdhcpv6-ia.c;h=a7146a767960cde012f1962a5e014f64e6a4c272;hp=c5f8783ca9fd543be2d5a2c1ca179e996d158bf4;hb=4c89614ccf5d72ee0c0824e5050a8814748a32c3;hpb=73850ae66e29b6cebf73a787a639f8400c6c94ab;ds=inline

diff --git a/src/dhcpv6-ia.c b/src/dhcpv6-ia.c
index c5f8783..a7146a7 100644
--- a/src/dhcpv6-ia.c
+++ b/src/dhcpv6-ia.c
@@ -83,7 +83,7 @@ int setup_dhcpv6_ia_interface(struct interface *iface, bool enable)
 				syslog(LOG_ERR, "Calloc failed for border on interface %s", iface->ifname);
 				return -1;
 			}
-			
+
 			border->length = 64;
 			list_add(&border->head, &iface->ia_assignments);
 		}
@@ -92,14 +92,18 @@ int setup_dhcpv6_ia_interface(struct interface *iface, bool enable)
 		struct lease *lease;
 		list_for_each_entry(lease, &leases, head) {
 			// Construct entry
-			struct dhcpv6_assignment *a = calloc(1, sizeof(*a) + lease->duid_len);
+			size_t duid_len = lease->duid_len ? lease->duid_len : 14;
+			struct dhcpv6_assignment *a = calloc(1, sizeof(*a) + duid_len);
 			if (!a) {
 				syslog(LOG_ERR, "Calloc failed for static lease assignment on interface %s",
 					iface->ifname);
 				return -1;
 			}
 
-			a->clid_len = lease->duid_len;
+			if (lease->dhcpv4_leasetime > 0)
+				a->leasetime = lease->dhcpv4_leasetime;
+
+			a->clid_len = duid_len;
 			a->length = 128;
 			if (lease->hostid) {
 				a->assigned = lease->hostid;
@@ -108,8 +112,12 @@ int setup_dhcpv6_ia_interface(struct interface *iface, bool enable)
 				a->assigned = ((i4a / 100) << 8) | (((i4a % 100) / 10) << 4) | (i4a % 10);
 			}
 			odhcpd_urandom(a->key, sizeof(a->key));
-			memcpy(a->clid_data, lease->duid, a->clid_len);
+			memcpy(a->clid_data, lease->duid, lease->duid_len);
 			memcpy(a->mac, lease->mac.ether_addr_octet, sizeof(a->mac));
+			/* Static assignment */
+			a->flags |= OAF_STATIC;
+			/* Infinite valid */
+			a->valid_until = 0;
 
 			// Assign to all interfaces
 			struct dhcpv6_assignment *c;
@@ -230,7 +238,7 @@ void dhcpv6_write_statefile(void)
 			if (iface->dhcpv6 == RELAYD_SERVER && iface->ia_assignments.next) {
 				struct dhcpv6_assignment *c;
 				list_for_each_entry(c, &iface->ia_assignments, head) {
-					if (c->clid_len == 0 || c->managed_size < 0)
+					if (!(c->flags & OAF_BOUND) || c->managed_size < 0)
 						continue;
 
 					char ipbuf[INET6_ADDRSTRLEN];
@@ -239,11 +247,12 @@ void dhcpv6_write_statefile(void)
 					odhcpd_hexlify(duidbuf, c->clid_data, c->clid_len);
 
 					// iface DUID iaid hostname lifetime assigned length [addrs...]
-					int l = snprintf(leasebuf, sizeof(leasebuf), "# %s %s %x %s %u %x %u ",
+					int l = snprintf(leasebuf, sizeof(leasebuf), "# %s %s %x %s %ld %x %u ",
 							iface->ifname, duidbuf, ntohl(c->iaid),
 							(c->hostname ? c->hostname : "-"),
-							(unsigned)(c->valid_until > now ?
-									(c->valid_until - now + wall_time) : 0),
+							(c->valid_until > now ?
+								(c->valid_until - now + wall_time) :
+								(INFINITE_VALID(c->valid_until) ? -1 : 0)),
 							c->assigned, (unsigned)c->length);
 
 					struct in6_addr addr;
@@ -258,7 +267,7 @@ void dhcpv6_write_statefile(void)
 							m = i;
 
 					for (size_t i = 0; i < addrlen; ++i) {
-						if (addrs[i].prefix > 96 || c->valid_until <= now ||
+						if (addrs[i].prefix > 96 || (!INFINITE_VALID(c->valid_until) && c->valid_until <= now) ||
 								(iface->managed < RELAYD_MANAGED_NO_AFLAG && i != m &&
 										addrs[i].prefix == 64))
 							continue;
@@ -275,9 +284,9 @@ void dhcpv6_write_statefile(void)
 							fputs(ipbuf, fp);
 
 							char b[256];
-					                if (dn_expand(iface->search, iface->search + iface->search_len,
-					                		iface->search, b, sizeof(b)) > 0)
-					                	fprintf(fp, "\t%s.%s", c->hostname, b);
+							if (dn_expand(iface->search, iface->search + iface->search_len,
+									iface->search, b, sizeof(b)) > 0)
+								fprintf(fp, "\t%s.%s", c->hostname, b);
 
 							fprintf(fp, "\t%s\n", c->hostname);
 							md5_hash(ipbuf, strlen(ipbuf), &md5);
@@ -295,17 +304,21 @@ void dhcpv6_write_statefile(void)
 			if (iface->dhcpv4 == RELAYD_SERVER && iface->dhcpv4_assignments.next) {
 				struct dhcpv4_assignment *c;
 				list_for_each_entry(c, &iface->dhcpv4_assignments, head) {
+					if (!(c->flags & OAF_BOUND))
+						continue;
+
 					char ipbuf[INET6_ADDRSTRLEN];
 					char leasebuf[512];
 					char duidbuf[16];
 					odhcpd_hexlify(duidbuf, c->hwaddr, sizeof(c->hwaddr));
 
 					// iface DUID iaid hostname lifetime assigned length [addrs...]
-					int l = snprintf(leasebuf, sizeof(leasebuf), "# %s %s ipv4 %s %u %x 32 ",
+					int l = snprintf(leasebuf, sizeof(leasebuf), "# %s %s ipv4 %s %ld %x 32 ",
 							iface->ifname, duidbuf,
 							(c->hostname ? c->hostname : "-"),
-							(unsigned)(c->valid_until > now ?
-									(c->valid_until - now + wall_time) : 0),
+							(c->valid_until > now ?
+								(c->valid_until - now + wall_time) :
+								(INFINITE_VALID(c->valid_until) ? -1 : 0)),
 							c->addr);
 
 					struct in_addr addr = {htonl(c->addr)};
@@ -315,9 +328,9 @@ void dhcpv6_write_statefile(void)
 						fputs(ipbuf, fp);
 
 						char b[256];
-				                if (dn_expand(iface->search, iface->search + iface->search_len,
-				                		iface->search, b, sizeof(b)) > 0)
-				                	fprintf(fp, "\t%s.%s", c->hostname, b);
+						if (dn_expand(iface->search, iface->search + iface->search_len,
+								iface->search, b, sizeof(b)) > 0)
+							fprintf(fp, "\t%s.%s", c->hostname, b);
 
 						fprintf(fp, "\t%s\n", c->hostname);
 						md5_hash(ipbuf, strlen(ipbuf), &md5);
@@ -572,7 +585,7 @@ void dhcpv6_ia_postupdate(struct interface *iface, time_t now)
 
 	int minprefix = -1;
 	for (size_t i = 0; i < iface->ia_addr_len; ++i) {
-		if (iface->ia_addr[i].preferred > now &&
+		if (iface->ia_addr[i].preferred > (uint32_t)now &&
 				iface->ia_addr[i].prefix < 64 &&
 				iface->ia_addr[i].prefix > minprefix)
 			minprefix = iface->ia_addr[i].prefix;
@@ -588,7 +601,8 @@ void dhcpv6_ia_postupdate(struct interface *iface, time_t now)
 	struct list_head reassign = LIST_HEAD_INIT(reassign);
 	struct dhcpv6_assignment *c, *d;
 	list_for_each_entry_safe(c, d, &iface->ia_assignments, head) {
-		if (c->clid_len == 0 || c->valid_until < now || c->managed_size)
+		if (c->clid_len == 0 || (!INFINITE_VALID(c->valid_until) && c->valid_until < now) ||
+				c->managed_size)
 			continue;
 
 		if (c->length < 128 && c->assigned >= border->assigned && c != border)
@@ -633,7 +647,7 @@ static void reconf_timer(struct uloop_timeout *event)
 
 		struct dhcpv6_assignment *a, *n;
 		list_for_each_entry_safe(a, n, &iface->ia_assignments, head) {
-			if (a->valid_until < now) {
+			if (!INFINITE_VALID(a->valid_until) && a->valid_until < now) {
 				if ((a->length < 128 && a->clid_len > 0) ||
 						(a->length == 128 && a->clid_len == 0)) {
 					list_del(&a->head);
@@ -674,7 +688,12 @@ static size_t append_reply(uint8_t *buf, size_t buflen, uint16_t status,
 		datalen += sizeof(stat);
 	} else {
 		if (a) {
-			uint32_t leasetime = iface->dhcpv4_leasetime;
+			uint32_t leasetime;
+			if (a->leasetime > 0) {
+				leasetime = a->leasetime;
+			} else {
+				leasetime = iface->dhcpv4_leasetime;
+			}
 			if (leasetime == 0)
 				leasetime = 3600;
 			else if (leasetime < 60)
@@ -739,7 +758,7 @@ static size_t append_reply(uint8_t *buf, size_t buflen, uint16_t status,
 					size_t entrlen = sizeof(n) - 4;
 
 					if (iface->managed < RELAYD_MANAGED_NO_AFLAG && i != m &&
-							addrs[i].prefix == 64)
+							addrs[i].prefix <= 64)
 						continue;
 
 					if (datalen + entrlen + 4 > buflen || a->assigned == 0)
@@ -759,9 +778,12 @@ static size_t append_reply(uint8_t *buf, size_t buflen, uint16_t status,
 				}
 			}
 
-			a->valid_until = valid + now;
-			out.t1 = htonl(pref * 5 / 10);
-			out.t2 = htonl(pref * 8 / 10);
+			if (!INFINITE_VALID(a->valid_until))
+				/* UINT32_MAX is considered as infinite leasetime */
+				a->valid_until = (valid == UINT32_MAX) ? 0 : valid + now;
+
+			out.t1 = htonl((pref == UINT32_MAX) ? pref : pref * 5 / 10);
+			out.t2 = htonl((pref == UINT32_MAX) ? pref : pref * 8 / 10);
 
 			if (!out.t1)
 				out.t1 = htonl(1);
@@ -1022,7 +1044,7 @@ ssize_t dhcpv6_handle_ia(uint8_t *buf, size_t buflen, struct interface *iface,
 			if (((c->clid_len == clid_len && !memcmp(c->clid_data, clid_data, clid_len)) ||
 					(c->clid_len >= clid_len && !c->clid_data[0] && !c->clid_data[1]
 					        && !memcmp(c->mac, mac, sizeof(mac)))) &&
-					(c->iaid == ia->iaid || c->valid_until < now) &&
+					(c->iaid == ia->iaid || INFINITE_VALID(c->valid_until) || now < c->valid_until) &&
 					((is_pd && c->length <= 64) || (is_na && c->length == 128))) {
 				a = c;
 
@@ -1053,6 +1075,9 @@ ssize_t dhcpv6_handle_ia(uint8_t *buf, size_t buflen, struct interface *iface,
 					a->length = reqlen;
 					a->peer = *addr;
 					a->assigned = reqhint;
+					// Set valid time to current time indicating
+					// assignment is not having infinite lifetime
+					a->valid_until = now;
 
 					if (first)
 						memcpy(a->key, first->key, sizeof(a->key));
@@ -1105,7 +1130,10 @@ ssize_t dhcpv6_handle_ia(uint8_t *buf, size_t buflen, struct interface *iface,
 
 			// Was only a solicitation: mark binding for removal
 			if (assigned && hdr->msg_type == DHCPV6_MSG_SOLICIT) {
-				a->valid_until = 0;
+				a->flags &= ~OAF_BOUND;
+
+				if (!(a->flags & OAF_STATIC))
+					a->valid_until = now;
 			} else if (assigned && hdr->msg_type == DHCPV6_MSG_REQUEST) {
 				if (hostname_len > 0) {
 					a->hostname = realloc(a->hostname, hostname_len + 1);
@@ -1115,6 +1143,7 @@ ssize_t dhcpv6_handle_ia(uint8_t *buf, size_t buflen, struct interface *iface,
 					}
 				}
 				a->accept_reconf = accept_reconf;
+				a->flags |= OAF_BOUND;
 				apply_lease(iface, a, true);
 			} else if (!assigned && a && a->managed_size == 0) { // Cleanup failed assignment
 				free_dhcpv6_assignment(a);
@@ -1129,14 +1158,23 @@ ssize_t dhcpv6_handle_ia(uint8_t *buf, size_t buflen, struct interface *iface,
 			} else if (hdr->msg_type == DHCPV6_MSG_RENEW ||
 					hdr->msg_type == DHCPV6_MSG_REBIND) {
 				ia_response_len = append_reply(buf, buflen, status, ia, a, iface, false);
-				if (a)
+				if (a) {
+					a->flags |= OAF_BOUND;
 					apply_lease(iface, a, true);
+				}
 			} else if (hdr->msg_type == DHCPV6_MSG_RELEASE) {
-				a->valid_until = 0;
+				if (!(a->flags & OAF_STATIC))
+					a->valid_until = now - 1;
+
+				a->flags &= ~OAF_BOUND;
 				apply_lease(iface, a, false);
 			} else if (hdr->msg_type == DHCPV6_MSG_DECLINE && a->length == 128) {
-				a->clid_len = 0;
-				a->valid_until = now + 3600; // Block address for 1h
+				a->flags &= ~OAF_BOUND;
+
+				if (!(a->flags & OAF_STATIC)) {
+					a->clid_len = 0;
+					a->valid_until = now + 3600; // Block address for 1h
+				}
 			}
 		} else if (hdr->msg_type == DHCPV6_MSG_CONFIRM && ia_addr_present) {
 			// Send NOTONLINK for CONFIRM with addr present so that clients restart connection