dhcpv6: add support for null IA_PD valid lifetime

[project/odhcp6c.git] / src / script.c

diff --git a/src/script.c b/src/script.c
index f32d4e2cd338a67687c5bdf2ffad703c073c15f7..bb93a53ed519927406f660659bd33c618bd6d0ea 100644 (file)
--- a/src/script.c
+++ b/src/script.c
@@ -179,6 +179,14 @@ static void entry_to_env(const char *name, const void *data, size_t len, enum en
        buf[buf_len++] = '=';
 
        for (size_t i = 0; i < len / sizeof(*e); ++i) {
+               /*
+                * The only invalid entries allowed to be passed to the script are prefix entries.
+                * This will allow immediate removal of the old ipv6-prefix-assignment that might
+                * otherwise be kept for up to 2 hours (see L-13 requirement of RFC 7084).
+                */
+               if (!e[i].valid && type != ENTRY_PREFIX)
+                       continue;
+
                inet_ntop(AF_INET6, &e[i].target, &buf[buf_len], INET6_ADDRSTRLEN);
                buf_len += strlen(&buf[buf_len]);
 
@@ -238,6 +246,8 @@ static void search_to_env(const char *name, const uint8_t *start, size_t len)
                                (uint8_t*)e < &start[len] &&
                                (uint8_t*)odhcp6c_next_entry(e) <= &start[len];
                                e = odhcp6c_next_entry(e)) {
+               if (!e->valid)
+                       continue;
                c = mempcpy(c, e->auxtarget, e->auxlen);
                *c++ = ' ';
        }
@@ -425,7 +435,7 @@ void script_call(const char *status, int delay, bool resume)
                signal(SIGTERM, SIG_DFL);
                if (delay > 0) {
                        sleep(delay);
-                       odhcp6c_expire();
+                       odhcp6c_expire(false);
                }
 
                struct in6_addr *addr = odhcp6c_get_state(STATE_SERVER_ADDR, &addr_len);