14 #include <libubox/utils.h>
15 #include <libubox/avl.h>
16 #include <libubox/avl-cmp.h>
17 #include <libubox/list.h>
18 #include <libubox/vlist.h>
22 static struct blob_buf b;
23 static int reload_pipe[2];
25 static int lease_cmp(const void *k1, const void *k2, void *ptr);
26 static void lease_update(struct vlist_tree *tree, struct vlist_node *node_new,
27 struct vlist_node *node_old);
29 struct vlist_tree leases = VLIST_TREE_INIT(leases, lease_cmp, lease_update, true, false);
30 AVL_TREE(interfaces, avl_strcmp, false, NULL);
31 struct config config = {.legacy = false, .main_dhcpv4 = false,
32 .dhcp_cb = NULL, .dhcp_statefile = NULL,
33 .log_level = LOG_INFO};
39 IFACE_ATTR_DYNAMICDHCP,
53 IFACE_ATTR_FILTER_CLASS,
54 IFACE_ATTR_DHCPV4_FORCERECONF,
55 IFACE_ATTR_DHCPV6_RAW,
56 IFACE_ATTR_DHCPV6_ASSIGNALL,
59 IFACE_ATTR_RA_DEFAULT,
60 IFACE_ATTR_RA_MANAGEMENT,
61 IFACE_ATTR_RA_OFFLINK,
62 IFACE_ATTR_RA_PREFERENCE,
63 IFACE_ATTR_RA_ADVROUTER,
64 IFACE_ATTR_RA_MININTERVAL,
65 IFACE_ATTR_RA_MAXINTERVAL,
66 IFACE_ATTR_RA_LIFETIME,
67 IFACE_ATTR_RA_USELEASETIME,
68 IFACE_ATTR_RA_REACHABLETIME,
69 IFACE_ATTR_RA_RETRANSTIME,
70 IFACE_ATTR_RA_HOPLIMIT,
73 IFACE_ATTR_PD_MANAGER,
75 IFACE_ATTR_NDPROXY_ROUTING,
76 IFACE_ATTR_NDPROXY_SLAVE,
77 IFACE_ATTR_PREFIX_FILTER,
81 static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
82 [IFACE_ATTR_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
83 [IFACE_ATTR_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
84 [IFACE_ATTR_NETWORKID] = { .name = "networkid", .type = BLOBMSG_TYPE_STRING },
85 [IFACE_ATTR_DYNAMICDHCP] = { .name = "dynamicdhcp", .type = BLOBMSG_TYPE_BOOL },
86 [IFACE_ATTR_IGNORE] = { .name = "ignore", .type = BLOBMSG_TYPE_BOOL },
87 [IFACE_ATTR_LEASETIME] = { .name = "leasetime", .type = BLOBMSG_TYPE_STRING },
88 [IFACE_ATTR_START] = { .name = "start", .type = BLOBMSG_TYPE_INT32 },
89 [IFACE_ATTR_LIMIT] = { .name = "limit", .type = BLOBMSG_TYPE_INT32 },
90 [IFACE_ATTR_MASTER] = { .name = "master", .type = BLOBMSG_TYPE_BOOL },
91 [IFACE_ATTR_UPSTREAM] = { .name = "upstream", .type = BLOBMSG_TYPE_ARRAY },
92 [IFACE_ATTR_RA] = { .name = "ra", .type = BLOBMSG_TYPE_STRING },
93 [IFACE_ATTR_DHCPV4] = { .name = "dhcpv4", .type = BLOBMSG_TYPE_STRING },
94 [IFACE_ATTR_DHCPV6] = { .name = "dhcpv6", .type = BLOBMSG_TYPE_STRING },
95 [IFACE_ATTR_NDP] = { .name = "ndp", .type = BLOBMSG_TYPE_STRING },
96 [IFACE_ATTR_ROUTER] = { .name = "router", .type = BLOBMSG_TYPE_ARRAY },
97 [IFACE_ATTR_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
98 [IFACE_ATTR_DOMAIN] = { .name = "domain", .type = BLOBMSG_TYPE_ARRAY },
99 [IFACE_ATTR_FILTER_CLASS] = { .name = "filter_class", .type = BLOBMSG_TYPE_STRING },
100 [IFACE_ATTR_DHCPV4_FORCERECONF] = { .name = "dhcpv4_forcereconf", .type = BLOBMSG_TYPE_BOOL },
101 [IFACE_ATTR_DHCPV6_RAW] = { .name = "dhcpv6_raw", .type = BLOBMSG_TYPE_STRING },
102 [IFACE_ATTR_DHCPV6_ASSIGNALL] = { .name ="dhcpv6_assignall", .type = BLOBMSG_TYPE_BOOL },
103 [IFACE_ATTR_DHCPV6_PD] = { .name = "dhcpv6_pd", .type = BLOBMSG_TYPE_BOOL },
104 [IFACE_ATTR_DHCPV6_NA] = { .name = "dhcpv6_na", .type = BLOBMSG_TYPE_BOOL },
105 [IFACE_ATTR_PD_MANAGER] = { .name = "pd_manager", .type = BLOBMSG_TYPE_STRING },
106 [IFACE_ATTR_PD_CER] = { .name = "pd_cer", .type = BLOBMSG_TYPE_STRING },
107 [IFACE_ATTR_RA_DEFAULT] = { .name = "ra_default", .type = BLOBMSG_TYPE_INT32 },
108 [IFACE_ATTR_RA_MANAGEMENT] = { .name = "ra_management", .type = BLOBMSG_TYPE_INT32 },
109 [IFACE_ATTR_RA_OFFLINK] = { .name = "ra_offlink", .type = BLOBMSG_TYPE_BOOL },
110 [IFACE_ATTR_RA_PREFERENCE] = { .name = "ra_preference", .type = BLOBMSG_TYPE_STRING },
111 [IFACE_ATTR_RA_ADVROUTER] = { .name = "ra_advrouter", .type = BLOBMSG_TYPE_BOOL },
112 [IFACE_ATTR_RA_MININTERVAL] = { .name = "ra_mininterval", .type = BLOBMSG_TYPE_INT32 },
113 [IFACE_ATTR_RA_MAXINTERVAL] = { .name = "ra_maxinterval", .type = BLOBMSG_TYPE_INT32 },
114 [IFACE_ATTR_RA_LIFETIME] = { .name = "ra_lifetime", .type = BLOBMSG_TYPE_INT32 },
115 [IFACE_ATTR_RA_USELEASETIME] = { .name = "ra_useleasetime", .type = BLOBMSG_TYPE_BOOL },
116 [IFACE_ATTR_RA_REACHABLETIME] = { .name = "ra_reachabletime", .type = BLOBMSG_TYPE_INT32 },
117 [IFACE_ATTR_RA_RETRANSTIME] = { .name = "ra_retranstime", .type = BLOBMSG_TYPE_INT32 },
118 [IFACE_ATTR_RA_HOPLIMIT] = { .name = "ra_hoplimit", .type = BLOBMSG_TYPE_INT32 },
119 [IFACE_ATTR_RA_MTU] = { .name = "ra_mtu", .type = BLOBMSG_TYPE_INT32 },
120 [IFACE_ATTR_RA_DNS] = { .name = "ra_dns", .type = BLOBMSG_TYPE_BOOL },
121 [IFACE_ATTR_NDPROXY_ROUTING] = { .name = "ndproxy_routing", .type = BLOBMSG_TYPE_BOOL },
122 [IFACE_ATTR_NDPROXY_SLAVE] = { .name = "ndproxy_slave", .type = BLOBMSG_TYPE_BOOL },
123 [IFACE_ATTR_PREFIX_FILTER] = { .name = "prefix_filter", .type = BLOBMSG_TYPE_STRING },
126 static const struct uci_blob_param_info iface_attr_info[IFACE_ATTR_MAX] = {
127 [IFACE_ATTR_UPSTREAM] = { .type = BLOBMSG_TYPE_STRING },
128 [IFACE_ATTR_DNS] = { .type = BLOBMSG_TYPE_STRING },
129 [IFACE_ATTR_DOMAIN] = { .type = BLOBMSG_TYPE_STRING },
132 const struct uci_blob_param_list interface_attr_list = {
133 .n_params = IFACE_ATTR_MAX,
134 .params = iface_attrs,
135 .info = iface_attr_info,
143 LEASE_ATTR_LEASETIME,
148 static const struct blobmsg_policy lease_attrs[LEASE_ATTR_MAX] = {
149 [LEASE_ATTR_IP] = { .name = "ip", .type = BLOBMSG_TYPE_STRING },
150 [LEASE_ATTR_MAC] = { .name = "mac", .type = BLOBMSG_TYPE_STRING },
151 [LEASE_ATTR_DUID] = { .name = "duid", .type = BLOBMSG_TYPE_STRING },
152 [LEASE_ATTR_HOSTID] = { .name = "hostid", .type = BLOBMSG_TYPE_STRING },
153 [LEASE_ATTR_LEASETIME] = { .name = "leasetime", .type = BLOBMSG_TYPE_STRING },
154 [LEASE_ATTR_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
157 const struct uci_blob_param_list lease_attr_list = {
158 .n_params = LEASE_ATTR_MAX,
159 .params = lease_attrs,
164 ODHCPD_ATTR_MAINDHCP,
165 ODHCPD_ATTR_LEASEFILE,
166 ODHCPD_ATTR_LEASETRIGGER,
167 ODHCPD_ATTR_LOGLEVEL,
171 static const struct blobmsg_policy odhcpd_attrs[ODHCPD_ATTR_MAX] = {
172 [ODHCPD_ATTR_LEGACY] = { .name = "legacy", .type = BLOBMSG_TYPE_BOOL },
173 [ODHCPD_ATTR_MAINDHCP] = { .name = "maindhcp", .type = BLOBMSG_TYPE_BOOL },
174 [ODHCPD_ATTR_LEASEFILE] = { .name = "leasefile", .type = BLOBMSG_TYPE_STRING },
175 [ODHCPD_ATTR_LEASETRIGGER] = { .name = "leasetrigger", .type = BLOBMSG_TYPE_STRING },
176 [ODHCPD_ATTR_LOGLEVEL] = { .name = "loglevel", .type = BLOBMSG_TYPE_INT32 },
179 const struct uci_blob_param_list odhcpd_attr_list = {
180 .n_params = ODHCPD_ATTR_MAX,
181 .params = odhcpd_attrs,
184 static int mkdir_p(char *dir, mode_t mask)
186 char *l = strrchr(dir, '/');
194 if (mkdir_p(dir, mask))
199 ret = mkdir(dir, mask);
200 if (ret && errno == EEXIST)
204 syslog(LOG_ERR, "mkdir(%s, %d) failed: %m\n", dir, mask);
209 static void set_interface_defaults(struct interface *iface)
211 iface->learn_routes = 1;
212 iface->dhcpv4_leasetime = 43200;
213 iface->dhcpv6_assignall = true;
214 iface->dhcpv6_pd = true;
215 iface->dhcpv6_na = true;
216 iface->ra_managed = RA_MANAGED_MFLAG;
217 iface->ra_maxinterval = 600;
218 iface->ra_mininterval = iface->ra_maxinterval/3;
219 iface->ra_lifetime = -1;
220 iface->ra_dns = true;
223 static void clean_interface(struct interface *iface)
227 free(iface->upstream);
228 free(iface->dhcpv4_router);
229 free(iface->dhcpv4_dns);
230 free(iface->dhcpv6_raw);
231 free(iface->filter_class);
232 memset(&iface->ra, 0, sizeof(*iface) - offsetof(struct interface, ra));
233 set_interface_defaults(iface);
236 static void close_interface(struct interface *iface)
238 avl_delete(&interfaces, &iface->avl);
240 router_setup_interface(iface, false);
241 dhcpv6_setup_interface(iface, false);
242 ndp_setup_interface(iface, false);
243 #ifdef DHCPV4_SUPPORT
244 dhcpv4_setup_interface(iface, false);
247 clean_interface(iface);
254 static int parse_mode(const char *mode)
256 if (!strcmp(mode, "disabled"))
257 return MODE_DISABLED;
258 else if (!strcmp(mode, "server"))
260 else if (!strcmp(mode, "relay"))
262 else if (!strcmp(mode, "hybrid"))
268 static void set_config(struct uci_section *s)
270 struct blob_attr *tb[ODHCPD_ATTR_MAX], *c;
272 blob_buf_init(&b, 0);
273 uci_to_blob(&b, s, &odhcpd_attr_list);
274 blobmsg_parse(odhcpd_attrs, ODHCPD_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
276 if ((c = tb[ODHCPD_ATTR_LEGACY]))
277 config.legacy = blobmsg_get_bool(c);
279 if ((c = tb[ODHCPD_ATTR_MAINDHCP]))
280 config.main_dhcpv4 = blobmsg_get_bool(c);
282 if ((c = tb[ODHCPD_ATTR_LEASEFILE])) {
283 free(config.dhcp_statefile);
284 config.dhcp_statefile = strdup(blobmsg_get_string(c));
287 if ((c = tb[ODHCPD_ATTR_LEASETRIGGER])) {
288 free(config.dhcp_cb);
289 config.dhcp_cb = strdup(blobmsg_get_string(c));
292 if ((c = tb[ODHCPD_ATTR_LOGLEVEL])) {
293 int log_level = (blobmsg_get_u32(c) & LOG_PRIMASK);
295 if (config.log_level != log_level) {
296 config.log_level = log_level;
297 setlogmask(LOG_UPTO(config.log_level));
302 static double parse_leasetime(struct blob_attr *c) {
303 char *val = blobmsg_get_string(c), *endptr = NULL;
304 double time = strcmp(val, "infinite") ? strtod(val, &endptr) : UINT32_MAX;
306 if (time && endptr && endptr[0]) {
307 if (endptr[0] == 's')
309 else if (endptr[0] == 'm')
311 else if (endptr[0] == 'h')
313 else if (endptr[0] == 'd')
315 else if (endptr[0] == 'w')
316 time *= 7 * 24 * 3600;
330 static void free_lease(struct lease *l)
336 static int set_lease(struct uci_section *s)
338 struct blob_attr *tb[LEASE_ATTR_MAX], *c;
343 blob_buf_init(&b, 0);
344 uci_to_blob(&b, s, &lease_attr_list);
345 blobmsg_parse(lease_attrs, LEASE_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
347 if ((c = tb[LEASE_ATTR_DUID]))
348 duidlen = (blobmsg_data_len(c) - 1) / 2;
350 l = calloc_a(sizeof(*l), &duid, duidlen);
354 if ((c = tb[LEASE_ATTR_MAC]))
355 if (!ether_aton_r(blobmsg_get_string(c), &l->mac))
358 if ((c = tb[LEASE_ATTR_DUID])) {
362 len = odhcpd_unhexlify(l->duid, duidlen, blobmsg_get_string(c));
370 if ((c = tb[LEASE_ATTR_NAME])) {
371 l->hostname = strdup(blobmsg_get_string(c));
372 if (!l->hostname || !odhcpd_valid_hostname(l->hostname))
376 if ((c = tb[LEASE_ATTR_IP]))
377 if (inet_pton(AF_INET, blobmsg_get_string(c), &l->ipaddr) < 0)
380 if ((c = tb[LEASE_ATTR_HOSTID])) {
382 l->hostid = strtoul(blobmsg_get_string(c), NULL, 16);
386 uint32_t i4a = ntohl(l->ipaddr) & 0xff;
387 l->hostid = ((i4a / 100) << 8) | (((i4a % 100) / 10) << 4) | (i4a % 10);
390 if ((c = tb[LEASE_ATTR_LEASETIME])) {
391 double time = parse_leasetime(c);
398 INIT_LIST_HEAD(&l->assignments);
399 vlist_add(&leases, &l->node, l);
409 int config_parse_interface(void *data, size_t len, const char *name, bool overwrite)
411 struct interface *iface;
412 struct blob_attr *tb[IFACE_ATTR_MAX], *c;
413 bool get_addrs = false;
415 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb, data, len);
417 if (tb[IFACE_ATTR_INTERFACE])
418 name = blobmsg_get_string(tb[IFACE_ATTR_INTERFACE]);
423 iface = avl_find_element(&interfaces, name, iface, avl);
427 iface = calloc_a(sizeof(*iface), &new_name, strlen(name) + 1);
431 iface->name = strcpy(new_name, name);
432 iface->avl.key = iface->name;
433 iface->router_event.uloop.fd = -1;
434 iface->dhcpv6_event.uloop.fd = -1;
435 iface->ndp_event.uloop.fd = -1;
436 iface->dhcpv4_event.uloop.fd = -1;
437 set_interface_defaults(iface);
439 avl_insert(&interfaces, &iface->avl);
440 get_addrs = overwrite = true;
443 const char *ifname = NULL;
445 if ((c = tb[IFACE_ATTR_IFNAME]))
446 ifname = blobmsg_get_string(c);
447 else if ((c = tb[IFACE_ATTR_NETWORKID]))
448 ifname = blobmsg_get_string(c);
452 if (overwrite || !iface->ifname)
453 ifname = ubus_get_ifname(name);
456 if (!iface->ifname && !ifname)
461 iface->ifname = strdup(ifname);
466 if (!iface->ifindex &&
467 (iface->ifindex = if_nametoindex(iface->ifname)) <= 0)
472 ssize_t len = netlink_get_interface_addrs(iface->ifindex,
473 true, &iface->addr6);
476 iface->addr6_len = len;
478 len = netlink_get_interface_addrs(iface->ifindex,
479 false, &iface->addr4);
481 iface->addr4_len = len;
486 if ((c = tb[IFACE_ATTR_DYNAMICDHCP]))
487 iface->no_dynamic_dhcp = !blobmsg_get_bool(c);
489 if (overwrite && (c = tb[IFACE_ATTR_IGNORE]))
490 iface->ignore = blobmsg_get_bool(c);
492 if ((c = tb[IFACE_ATTR_LEASETIME])) {
493 double time = parse_leasetime(c);
497 iface->dhcpv4_leasetime = time;
500 if ((c = tb[IFACE_ATTR_START])) {
501 iface->dhcpv4_start.s_addr = htonl(blobmsg_get_u32(c));
503 if (config.main_dhcpv4 && config.legacy)
504 iface->dhcpv4 = MODE_SERVER;
507 if ((c = tb[IFACE_ATTR_LIMIT]))
508 iface->dhcpv4_end.s_addr = htonl(
509 ntohl(iface->dhcpv4_start.s_addr) + blobmsg_get_u32(c));
511 if ((c = tb[IFACE_ATTR_MASTER]))
512 iface->master = blobmsg_get_bool(c);
514 if (overwrite && (c = tb[IFACE_ATTR_UPSTREAM])) {
515 struct blob_attr *cur;
518 blobmsg_for_each_attr(cur, c, rem) {
519 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
522 iface->upstream = realloc(iface->upstream,
523 iface->upstream_len + blobmsg_data_len(cur));
524 if (!iface->upstream)
527 memcpy(iface->upstream + iface->upstream_len, blobmsg_get_string(cur), blobmsg_data_len(cur));
528 iface->upstream_len += blobmsg_data_len(cur);
533 if ((c = tb[IFACE_ATTR_RA])) {
534 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
540 if ((c = tb[IFACE_ATTR_DHCPV4])) {
541 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0) {
542 if (config.main_dhcpv4)
543 iface->dhcpv4 = mode;
549 if ((c = tb[IFACE_ATTR_DHCPV6])) {
550 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
551 iface->dhcpv6 = mode;
556 if ((c = tb[IFACE_ATTR_NDP])) {
557 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
563 if ((c = tb[IFACE_ATTR_ROUTER])) {
564 struct blob_attr *cur;
567 blobmsg_for_each_attr(cur, c, rem) {
568 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
571 struct in_addr addr4;
572 if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
573 iface->dhcpv4_router = realloc(iface->dhcpv4_router,
574 (++iface->dhcpv4_router_cnt) * sizeof(*iface->dhcpv4_router));
575 if (!iface->dhcpv4_router)
578 iface->dhcpv4_router[iface->dhcpv4_router_cnt - 1] = addr4;
584 if ((c = tb[IFACE_ATTR_DNS])) {
585 struct blob_attr *cur;
588 iface->always_rewrite_dns = true;
589 blobmsg_for_each_attr(cur, c, rem) {
590 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
593 struct in_addr addr4;
594 struct in6_addr addr6;
595 if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
596 if (addr4.s_addr == INADDR_ANY)
599 iface->dhcpv4_dns = realloc(iface->dhcpv4_dns,
600 (++iface->dhcpv4_dns_cnt) * sizeof(*iface->dhcpv4_dns));
601 if (!iface->dhcpv4_dns)
604 iface->dhcpv4_dns[iface->dhcpv4_dns_cnt - 1] = addr4;
605 } else if (inet_pton(AF_INET6, blobmsg_get_string(cur), &addr6) == 1) {
606 if (IN6_IS_ADDR_UNSPECIFIED(&addr6))
609 iface->dns = realloc(iface->dns,
610 (++iface->dns_cnt) * sizeof(*iface->dns));
614 iface->dns[iface->dns_cnt - 1] = addr6;
620 if ((c = tb[IFACE_ATTR_DOMAIN])) {
621 struct blob_attr *cur;
624 blobmsg_for_each_attr(cur, c, rem) {
625 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
629 char *domain = blobmsg_get_string(cur);
630 size_t domainlen = strlen(domain);
631 if (domainlen > 0 && domain[domainlen - 1] == '.')
632 domain[domainlen - 1] = 0;
634 int len = dn_comp(domain, buf, sizeof(buf), NULL, NULL);
638 iface->search = realloc(iface->search, iface->search_len + len);
642 memcpy(&iface->search[iface->search_len], buf, len);
643 iface->search_len += len;
647 if ((c = tb[IFACE_ATTR_FILTER_CLASS])) {
648 iface->filter_class = realloc(iface->filter_class, blobmsg_data_len(c) + 1);
649 memcpy(iface->filter_class, blobmsg_get_string(c), blobmsg_data_len(c) + 1);
652 if ((c = tb[IFACE_ATTR_DHCPV4_FORCERECONF]))
653 iface->dhcpv4_forcereconf = blobmsg_get_bool(c);
655 if ((c = tb[IFACE_ATTR_DHCPV6_RAW])) {
656 iface->dhcpv6_raw_len = blobmsg_data_len(c) / 2;
657 iface->dhcpv6_raw = realloc(iface->dhcpv6_raw, iface->dhcpv6_raw_len);
658 odhcpd_unhexlify(iface->dhcpv6_raw, iface->dhcpv6_raw_len, blobmsg_get_string(c));
661 if ((c = tb[IFACE_ATTR_DHCPV6_ASSIGNALL]))
662 iface->dhcpv6_assignall = blobmsg_get_bool(c);
664 if ((c = tb[IFACE_ATTR_DHCPV6_PD]))
665 iface->dhcpv6_pd = blobmsg_get_bool(c);
667 if ((c = tb[IFACE_ATTR_DHCPV6_NA]))
668 iface->dhcpv6_na = blobmsg_get_bool(c);
670 if ((c = tb[IFACE_ATTR_RA_DEFAULT]))
671 iface->default_router = blobmsg_get_u32(c);
673 if ((c = tb[IFACE_ATTR_RA_MANAGEMENT]))
674 iface->ra_managed = blobmsg_get_u32(c);
676 if ((c = tb[IFACE_ATTR_RA_REACHABLETIME])) {
677 uint32_t ra_reachabletime = blobmsg_get_u32(c);
678 if (ra_reachabletime > 3600000)
681 iface->ra_reachabletime = ra_reachabletime;
684 if ((c = tb[IFACE_ATTR_RA_RETRANSTIME])) {
685 uint32_t ra_retranstime = blobmsg_get_u32(c);
686 if (ra_retranstime > 60000)
689 iface->ra_retranstime = ra_retranstime;
692 if ((c = tb[IFACE_ATTR_RA_HOPLIMIT])) {
693 uint32_t ra_hoplimit = blobmsg_get_u32(c);
694 if (ra_hoplimit > 255)
697 iface->ra_hoplimit = ra_hoplimit;
700 if ((c = tb[IFACE_ATTR_RA_MTU])) {
701 uint32_t ra_mtu = blobmsg_get_u32(c);
702 if (ra_mtu < 1280 || ra_mtu > 65535)
705 iface->ra_mtu = ra_mtu;
708 if ((c = tb[IFACE_ATTR_RA_OFFLINK]))
709 iface->ra_not_onlink = blobmsg_get_bool(c);
711 if ((c = tb[IFACE_ATTR_RA_ADVROUTER]))
712 iface->ra_advrouter = blobmsg_get_bool(c);
714 if ((c = tb[IFACE_ATTR_RA_MININTERVAL]))
715 iface->ra_mininterval = blobmsg_get_u32(c);
717 if ((c = tb[IFACE_ATTR_RA_MAXINTERVAL]))
718 iface->ra_maxinterval = blobmsg_get_u32(c);
720 if ((c = tb[IFACE_ATTR_RA_LIFETIME]))
721 iface->ra_lifetime = blobmsg_get_u32(c);
723 if ((c = tb[IFACE_ATTR_RA_USELEASETIME]))
724 iface->ra_useleasetime = blobmsg_get_bool(c);
726 if ((c = tb[IFACE_ATTR_RA_DNS]))
727 iface->ra_dns = blobmsg_get_bool(c);
729 if ((c = tb[IFACE_ATTR_RA_PREFERENCE])) {
730 const char *prio = blobmsg_get_string(c);
732 if (!strcmp(prio, "high"))
733 iface->route_preference = 1;
734 else if (!strcmp(prio, "low"))
735 iface->route_preference = -1;
736 else if (!strcmp(prio, "medium") || !strcmp(prio, "default"))
737 iface->route_preference = 0;
742 if ((c = tb[IFACE_ATTR_PD_MANAGER]))
743 strncpy(iface->dhcpv6_pd_manager, blobmsg_get_string(c),
744 sizeof(iface->dhcpv6_pd_manager) - 1);
746 if ((c = tb[IFACE_ATTR_PD_CER]) &&
747 inet_pton(AF_INET6, blobmsg_get_string(c), &iface->dhcpv6_pd_cer) < 1)
750 if ((c = tb[IFACE_ATTR_NDPROXY_ROUTING]))
751 iface->learn_routes = blobmsg_get_bool(c);
753 if ((c = tb[IFACE_ATTR_NDPROXY_SLAVE]))
754 iface->external = blobmsg_get_bool(c);
756 if ((c = tb[IFACE_ATTR_PREFIX_FILTER])) {
757 const char *str = blobmsg_get_string(c);
758 char *astr = malloc(strlen(str) + 1);
762 if (!astr || !strcpy(astr, str) ||
763 (delim = strchr(astr, '/')) == NULL || (*(delim++) = 0) ||
764 sscanf(delim, "%i", &l) == 0 || l > 128 ||
765 inet_pton(AF_INET6, astr, &iface->pio_filter_addr) == 0)
766 iface->pio_filter_length = 0;
768 iface->pio_filter_length = l;
777 close_interface(iface);
781 static int set_interface(struct uci_section *s)
783 blob_buf_init(&b, 0);
784 uci_to_blob(&b, s, &interface_attr_list);
786 return config_parse_interface(blob_data(b.head), blob_len(b.head), s->e.name, true);
789 static void lease_delete_assignments(struct lease *l, bool v6)
791 struct dhcp_assignment *a, *tmp;
792 unsigned int flag = v6 ? OAF_DHCPV6 : OAF_DHCPV4;
794 list_for_each_entry_safe(a, tmp, &l->assignments, lease_list) {
800 static void lease_update_assignments(struct lease *l)
802 struct dhcp_assignment *a;
804 list_for_each_entry(a, &l->assignments, lease_list) {
810 a->hostname = strdup(l->hostname);
812 a->leasetime = l->leasetime;
816 static int lease_cmp(const void *k1, const void *k2, _unused void *ptr)
818 const struct lease *l1 = k1, *l2 = k2;
821 if (l1->duid_len != l2->duid_len)
822 return l1->duid_len - l2->duid_len;
824 if (l1->duid_len && l2->duid_len)
825 cmp = memcmp(l1->duid, l2->duid, l1->duid_len);
830 return memcmp(l1->mac.ether_addr_octet, l2->mac.ether_addr_octet,
831 sizeof(l1->mac.ether_addr_octet));
834 static void lease_change_config(struct lease *l_old, struct lease *l_new)
838 if ((!!l_new->hostname != !!l_old->hostname) ||
839 (l_new->hostname && strcmp(l_new->hostname, l_old->hostname))) {
840 free(l_old->hostname);
841 l_old->hostname = NULL;
844 l_old->hostname = strdup(l_new->hostname);
849 if (l_old->leasetime != l_new->leasetime) {
850 l_old->leasetime = l_new->leasetime;
854 if (l_old->ipaddr != l_new->ipaddr) {
855 l_old->ipaddr = l_new->ipaddr;
856 lease_delete_assignments(l_old, false);
859 if (l_old->hostid != l_new->hostid) {
860 l_old->hostid = l_new->hostid;
861 lease_delete_assignments(l_old, true);
865 lease_update_assignments(l_old);
870 static void lease_delete(struct lease *l)
872 struct dhcp_assignment *a;
874 list_for_each_entry(a, &l->assignments, lease_list)
880 static void lease_update(_unused struct vlist_tree *tree, struct vlist_node *node_new,
881 struct vlist_node *node_old)
883 struct lease *lease_new = container_of(node_new, struct lease, node);
884 struct lease *lease_old = container_of(node_old, struct lease, node);
886 if (node_old && node_new)
887 lease_change_config(lease_old, lease_new);
889 lease_delete(lease_old);
892 struct lease *config_find_lease_by_duid(const uint8_t *duid, const uint16_t len)
896 vlist_for_each_element(&leases, l, node) {
897 if (l->duid_len == len && !memcmp(l->duid, duid, len))
904 struct lease *config_find_lease_by_mac(const uint8_t *mac)
908 vlist_for_each_element(&leases, l, node) {
909 if (!memcmp(l->mac.ether_addr_octet, mac,
910 sizeof(l->mac.ether_addr_octet)))
917 struct lease *config_find_lease_by_hostid(const uint32_t hostid)
921 vlist_for_each_element(&leases, l, node) {
922 if (l->hostid == hostid)
929 struct lease *config_find_lease_by_ipaddr(const uint32_t ipaddr)
933 vlist_for_each_element(&leases, l, node) {
934 if (l->ipaddr == ipaddr)
941 void odhcpd_reload(void)
943 struct uci_context *uci = uci_alloc_context();
944 struct interface *master = NULL, *i, *tmp;
949 vlist_update(&leases);
950 avl_for_each_element(&interfaces, i, avl)
953 struct uci_package *dhcp = NULL;
954 if (!uci_load(uci, "dhcp", &dhcp)) {
955 struct uci_element *e;
956 uci_foreach_element(&dhcp->sections, e) {
957 struct uci_section *s = uci_to_section(e);
958 if (!strcmp(s->type, "host"))
960 else if (!strcmp(s->type, "odhcpd"))
964 uci_foreach_element(&dhcp->sections, e) {
965 struct uci_section *s = uci_to_section(e);
966 if (!strcmp(s->type, "dhcp"))
971 if (config.dhcp_statefile) {
972 char *path = strdup(config.dhcp_statefile);
974 mkdir_p(dirname(path), 0755);
978 vlist_flush(&leases);
981 ubus_apply_network();
984 bool any_dhcpv6_slave = false, any_ra_slave = false, any_ndp_slave = false;
987 avl_for_each_element(&interfaces, i, avl) {
991 if (i->dhcpv6 == MODE_HYBRID || i->dhcpv6 == MODE_RELAY)
992 any_dhcpv6_slave = true;
994 if (i->ra == MODE_HYBRID || i->ra == MODE_RELAY)
997 if (i->ndp == MODE_HYBRID || i->ndp == MODE_RELAY)
998 any_ndp_slave = true;
1001 /* Evaluate hybrid mode for master */
1002 avl_for_each_element(&interfaces, i, avl) {
1006 enum odhcpd_mode hybrid_mode = MODE_DISABLED;
1008 if (!ubus_has_prefix(i->name, i->ifname))
1009 hybrid_mode = MODE_RELAY;
1012 if (i->dhcpv6 == MODE_HYBRID)
1013 i->dhcpv6 = hybrid_mode;
1015 if (i->dhcpv6 == MODE_RELAY && !any_dhcpv6_slave)
1016 i->dhcpv6 = MODE_DISABLED;
1018 if (i->ra == MODE_HYBRID)
1019 i->ra = hybrid_mode;
1021 if (i->ra == MODE_RELAY && !any_ra_slave)
1022 i->ra = MODE_DISABLED;
1024 if (i->ndp == MODE_HYBRID)
1025 i->ndp = hybrid_mode;
1027 if (i->ndp == MODE_RELAY && !any_ndp_slave)
1028 i->ndp = MODE_DISABLED;
1030 if (i->dhcpv6 == MODE_RELAY || i->ra == MODE_RELAY || i->ndp == MODE_RELAY)
1035 avl_for_each_element_safe(&interfaces, i, avl, tmp) {
1037 /* Resolve hybrid mode */
1038 if (i->dhcpv6 == MODE_HYBRID)
1039 i->dhcpv6 = (master && master->dhcpv6 == MODE_RELAY) ?
1040 MODE_RELAY : MODE_SERVER;
1042 if (i->ra == MODE_HYBRID)
1043 i->ra = (master && master->ra == MODE_RELAY) ?
1044 MODE_RELAY : MODE_SERVER;
1046 if (i->ndp == MODE_HYBRID)
1047 i->ndp = (master && master->ndp == MODE_RELAY) ?
1048 MODE_RELAY : MODE_DISABLED;
1050 router_setup_interface(i, !i->ignore || i->ra != MODE_DISABLED);
1051 dhcpv6_setup_interface(i, !i->ignore || i->dhcpv6 != MODE_DISABLED);
1052 ndp_setup_interface(i, !i->ignore || i->ndp != MODE_DISABLED);
1053 #ifdef DHCPV4_SUPPORT
1054 dhcpv4_setup_interface(i, !i->ignore || i->dhcpv4 != MODE_DISABLED);
1060 uci_unload(uci, dhcp);
1061 uci_free_context(uci);
1064 static void handle_signal(int signal)
1068 if (signal == SIGHUP) {
1069 if (write(reload_pipe[1], b, sizeof(b)) < 0) {}
1074 static void reload_cb(struct uloop_fd *u, _unused unsigned int events)
1077 if (read(u->fd, b, sizeof(b)) < 0) {}
1082 static struct uloop_fd reload_fd = { .cb = reload_cb };
1084 void odhcpd_run(void)
1086 if (pipe2(reload_pipe, O_NONBLOCK | O_CLOEXEC) < 0) {}
1088 reload_fd.fd = reload_pipe[0];
1089 uloop_fd_add(&reload_fd, ULOOP_READ);
1091 signal(SIGTERM, handle_signal);
1092 signal(SIGINT, handle_signal);
1093 signal(SIGHUP, handle_signal);