Replace IN6_ARE_ADDR_EQUAL by memcmp to avoid unaligneds
[project/odhcpd.git] / src / dhcpv6-ia.c
index 37b7cc8..b1931ef 100644 (file)
@@ -101,6 +101,7 @@ int setup_dhcpv6_ia_interface(struct interface *iface, bool enable)
                        list_for_each_entry(c, &iface->ia_assignments, head) {
                                if (c->length != 128 || c->assigned > a->assigned) {
                                        list_add_tail(&a->head, &c->head);
+                                       break;
                                } else if (c->assigned == a->assigned) {
                                        // Already an assignment with that number
                                        break;
@@ -211,7 +212,7 @@ void dhcpv6_write_statefile(void)
                        if (iface->dhcpv6 != RELAYD_SERVER && iface->dhcpv4 != RELAYD_SERVER)
                                continue;
 
-                       if (iface->dhcpv6 == RELAYD_SERVER) {
+                       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)
@@ -232,7 +233,7 @@ void dhcpv6_write_statefile(void)
 
                                        struct in6_addr addr;
                                        for (size_t i = 0; i < iface->ia_addr_len; ++i) {
-                                               if (iface->ia_addr[i].prefix > 64)
+                                               if (iface->ia_addr[i].prefix > 96)
                                                        continue;
 
                                                addr = iface->ia_addr[i].addr;
@@ -243,7 +244,14 @@ void dhcpv6_write_statefile(void)
                                                inet_ntop(AF_INET6, &addr, ipbuf, sizeof(ipbuf) - 1);
 
                                                if (c->length == 128 && c->hostname && i == 0) {
-                                                       fprintf(fp, "%s\t%s\n", ipbuf, c->hostname);
+                                                       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);
+
+                                                       fprintf(fp, "\t%s\n", c->hostname);
                                                        md5_hash(ipbuf, strlen(ipbuf), &md5);
                                                        md5_hash(c->hostname, strlen(c->hostname), &md5);
                                                }
@@ -255,7 +263,7 @@ void dhcpv6_write_statefile(void)
                                }
                        }
 
-                       if (iface->dhcpv4 == RELAYD_SERVER) {
+                       if (iface->dhcpv4 == RELAYD_SERVER && iface->dhcpv4_assignments.next) {
                                struct dhcpv4_assignment *c;
                                list_for_each_entry(c, &iface->dhcpv4_assignments, head) {
                                        char ipbuf[INET6_ADDRSTRLEN];
@@ -275,7 +283,14 @@ void dhcpv6_write_statefile(void)
                                        inet_ntop(AF_INET, &addr, ipbuf, sizeof(ipbuf) - 1);
 
                                        if (c->hostname[0]) {
-                                               fprintf(fp, "%s\t%s\n", ipbuf, c->hostname);
+                                               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);
+
+                                               fprintf(fp, "\t%s\n", c->hostname);
                                                md5_hash(ipbuf, strlen(ipbuf), &md5);
                                                md5_hash(c->hostname, strlen(c->hostname), &md5);
                                        }
@@ -436,7 +451,6 @@ static void update(struct interface *iface)
                if (addr[i].prefix > minprefix)
                        minprefix = addr[i].prefix;
 
-               addr[i].addr.s6_addr32[2] = 0;
                addr[i].addr.s6_addr32[3] = 0;
 
                if (addr[i].preferred < UINT32_MAX - now)
@@ -589,7 +603,7 @@ static size_t append_reply(uint8_t *buf, size_t buflen, uint16_t status,
                                uint32_t prefix_pref = iface->ia_addr[i].preferred - now;
                                uint32_t prefix_valid = iface->ia_addr[i].valid - now;
 
-                               if (iface->ia_addr[i].prefix > 64 ||
+                               if (iface->ia_addr[i].prefix > 96 ||
                                                iface->ia_addr[i].preferred <= (uint32_t)now)
                                        continue;
 
@@ -697,7 +711,7 @@ static size_t append_reply(uint8_t *buf, size_t buflen, uint16_t status,
                                bool found = false;
                                if (a) {
                                        for (size_t i = 0; i < iface->ia_addr_len; ++i) {
-                                               if (iface->ia_addr[i].prefix > 64 ||
+                                               if (iface->ia_addr[i].prefix > 96 ||
                                                                iface->ia_addr[i].preferred <= (uint32_t)now)
                                                        continue;
 
@@ -705,13 +719,13 @@ static size_t append_reply(uint8_t *buf, size_t buflen, uint16_t status,
                                                if (ia->type == htons(DHCPV6_OPT_IA_PD)) {
                                                        addr.s6_addr32[1] |= htonl(a->assigned);
 
-                                                       if (IN6_ARE_ADDR_EQUAL(&p->addr, &addr) &&
+                                                       if (!memcmp(&p->addr, &addr, sizeof(addr)) &&
                                                                        p->prefix == a->length)
                                                                found = true;
                                                } else {
                                                        addr.s6_addr32[3] = htonl(a->assigned);
 
-                                                       if (IN6_ARE_ADDR_EQUAL(&n->addr, &addr))
+                                                       if (!memcmp(&n->addr, &addr, sizeof(addr)))
                                                                found = true;
                                                }
                                        }