From: Hans Dedecker <dedeckeh@gmail.com>
Date: Sun, 16 Feb 2020 20:27:42 +0000 (+0100)
Subject: dhcpv6-ia: avoid setting lifetime to infinite for static assignments
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=a90cc2e147b0f6e429c4e5e3e4e42e00b01ec32c;p=project%2Fodhcpd.git

dhcpv6-ia: avoid setting lifetime to infinite for static assignments

Don't set the valid lifetime to infinite for static assignments
but rather set it to the IA lifetime given to the client.
This makes it possible to display the leasetime for static assigments
and simplifies the code in several places

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
---

diff --git a/src/dhcpv6-ia.c b/src/dhcpv6-ia.c
index d8187ff..836c111 100644
--- a/src/dhcpv6-ia.c
+++ b/src/dhcpv6-ia.c
@@ -529,7 +529,7 @@ static void managed_handle_pd_data(struct ustream *s, _unused int bytes_new)
 
 	if (first && c->managed_size == 0)
 		free_assignment(c);
-	else if (first && !(c->flags & OAF_STATIC))
+	else if (first)
 		c->valid_until = now + 150;
 }
 
@@ -540,8 +540,7 @@ static void managed_handle_pd_done(struct ustream *s)
 	struct ustream_fd *fd = container_of(s, struct ustream_fd, stream);
 	struct dhcp_assignment *c = container_of(fd, struct dhcp_assignment, managed_sock);
 
-	if (!(c->flags & OAF_STATIC))
-		c->valid_until = odhcpd_time() + 15;
+	c->valid_until = odhcpd_time() + 15;
 
 	c->managed_size = 0;
 
@@ -569,8 +568,7 @@ static bool assign_pd(struct interface *iface, struct dhcp_assignment *assign)
 			ustream_write_pending(&assign->managed_sock.stream);
 			assign->managed_size = -1;
 
-			if (!(assign->flags & OAF_STATIC))
-				assign->valid_until = odhcpd_time() + 15;
+			assign->valid_until = odhcpd_time() + 15;
 
 			list_add(&assign->head, &iface->ia_assignments);
 
@@ -1252,9 +1250,7 @@ ssize_t dhcpv6_ia_handle_IAs(uint8_t *buf, size_t buflen, struct interface *ifac
 						a->length = reqlen;
 						a->peer = *addr;
 						a->assigned = is_na && l ? l->hostid : reqhint;
-						/* Set valid time to 0 for static lease indicating */
-						/* infinite lifetime otherwise current time        */
-						a->valid_until = l ? 0 : now;
+						a->valid_until =  now;
 						a->dhcp_free_cb = dhcpv6_ia_free_assignment;
 						a->iface = iface;
 						a->flags = (is_pd ? OAF_DHCPV6_PD : OAF_DHCPV6_NA);
@@ -1334,9 +1330,8 @@ ssize_t dhcpv6_ia_handle_IAs(uint8_t *buf, size_t buflen, struct interface *ifac
 				a->flags &= ~OAF_BOUND;
 				a->flags |= OAF_TENTATIVE;
 
-				if (!(a->flags & OAF_STATIC))
-					/* Keep tentative assignment around for 60 seconds */
-					a->valid_until = now + 60;
+				/* Keep tentative assignment around for 60 seconds */
+				a->valid_until = now + 60;
 
 			} else if (assigned &&
 				   ((hdr->msg_type == DHCPV6_MSG_SOLICIT && rapid_commit) ||
@@ -1378,20 +1373,15 @@ ssize_t dhcpv6_ia_handle_IAs(uint8_t *buf, size_t buflen, struct interface *ifac
 					apply_lease(a, true);
 				}
 			} else if (hdr->msg_type == DHCPV6_MSG_RELEASE) {
-				if (a->flags & OAF_STATIC) {
-					apply_lease(a, false);
-					a->flags &= ~OAF_BOUND;
-				}
-				else
-					a->valid_until = now - 1;
-
+				a->valid_until = now - 1;
 			} else if ((a->flags & OAF_DHCPV6_NA) && hdr->msg_type == DHCPV6_MSG_DECLINE) {
 				a->flags &= ~OAF_BOUND;
 
-				if (!(a->flags & OAF_STATIC)) {
+				if (!(a->flags & OAF_STATIC) || a->lease->hostid != a->assigned) {
 					memset(a->clid_data, 0, a->clid_len);
 					a->valid_until = now + 3600; /* Block address for 1h */
-				}
+				} else
+					a->valid_until = now - 1;
 			}
 		} else if (hdr->msg_type == DHCPV6_MSG_CONFIRM) {
 			if (ia_addr_present && !dhcpv6_ia_on_link(ia, a, iface)) {