16 static struct blob_buf b;
17 static int reload_pipe[2];
18 struct list_head leases = LIST_HEAD_INIT(leases);
19 struct list_head interfaces = LIST_HEAD_INIT(interfaces);
20 struct config config = {.legacy = false, .main_dhcpv4 = false,
21 .dhcp_cb = NULL, .dhcp_statefile = NULL,
22 .log_level = LOG_INFO};
28 IFACE_ATTR_DYNAMICDHCP,
42 IFACE_ATTR_FILTER_CLASS,
43 IFACE_ATTR_DHCPV6_RAW,
44 IFACE_ATTR_RA_DEFAULT,
45 IFACE_ATTR_RA_MANAGEMENT,
46 IFACE_ATTR_RA_OFFLINK,
47 IFACE_ATTR_RA_PREFERENCE,
48 IFACE_ATTR_RA_ADVROUTER,
49 IFACE_ATTR_RA_MININTERVAL,
50 IFACE_ATTR_RA_MAXINTERVAL,
51 IFACE_ATTR_RA_LIFETIME,
52 IFACE_ATTR_RA_USELEASETIME,
53 IFACE_ATTR_RA_REACHABLETIME,
54 IFACE_ATTR_RA_HOPLIMIT,
56 IFACE_ATTR_PD_MANAGER,
58 IFACE_ATTR_NDPROXY_ROUTING,
59 IFACE_ATTR_NDPROXY_SLAVE,
63 static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
64 [IFACE_ATTR_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
65 [IFACE_ATTR_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
66 [IFACE_ATTR_NETWORKID] = { .name = "networkid", .type = BLOBMSG_TYPE_STRING },
67 [IFACE_ATTR_DYNAMICDHCP] = { .name = "dynamicdhcp", .type = BLOBMSG_TYPE_BOOL },
68 [IFACE_ATTR_IGNORE] = { .name = "ignore", .type = BLOBMSG_TYPE_BOOL },
69 [IFACE_ATTR_LEASETIME] = { .name = "leasetime", .type = BLOBMSG_TYPE_STRING },
70 [IFACE_ATTR_START] = { .name = "start", .type = BLOBMSG_TYPE_INT32 },
71 [IFACE_ATTR_LIMIT] = { .name = "limit", .type = BLOBMSG_TYPE_INT32 },
72 [IFACE_ATTR_MASTER] = { .name = "master", .type = BLOBMSG_TYPE_BOOL },
73 [IFACE_ATTR_UPSTREAM] = { .name = "upstream", .type = BLOBMSG_TYPE_ARRAY },
74 [IFACE_ATTR_RA] = { .name = "ra", .type = BLOBMSG_TYPE_STRING },
75 [IFACE_ATTR_DHCPV4] = { .name = "dhcpv4", .type = BLOBMSG_TYPE_STRING },
76 [IFACE_ATTR_DHCPV6] = { .name = "dhcpv6", .type = BLOBMSG_TYPE_STRING },
77 [IFACE_ATTR_NDP] = { .name = "ndp", .type = BLOBMSG_TYPE_STRING },
78 [IFACE_ATTR_ROUTER] = { .name = "router", .type = BLOBMSG_TYPE_ARRAY },
79 [IFACE_ATTR_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
80 [IFACE_ATTR_DOMAIN] = { .name = "domain", .type = BLOBMSG_TYPE_ARRAY },
81 [IFACE_ATTR_FILTER_CLASS] = { .name = "filter_class", .type = BLOBMSG_TYPE_STRING },
82 [IFACE_ATTR_DHCPV6_RAW] = { .name = "dhcpv6_raw", .type = BLOBMSG_TYPE_STRING },
83 [IFACE_ATTR_PD_MANAGER] = { .name = "pd_manager", .type = BLOBMSG_TYPE_STRING },
84 [IFACE_ATTR_PD_CER] = { .name = "pd_cer", .type = BLOBMSG_TYPE_STRING },
85 [IFACE_ATTR_RA_DEFAULT] = { .name = "ra_default", .type = BLOBMSG_TYPE_INT32 },
86 [IFACE_ATTR_RA_MANAGEMENT] = { .name = "ra_management", .type = BLOBMSG_TYPE_INT32 },
87 [IFACE_ATTR_RA_OFFLINK] = { .name = "ra_offlink", .type = BLOBMSG_TYPE_BOOL },
88 [IFACE_ATTR_RA_PREFERENCE] = { .name = "ra_preference", .type = BLOBMSG_TYPE_STRING },
89 [IFACE_ATTR_RA_ADVROUTER] = { .name = "ra_advrouter", .type = BLOBMSG_TYPE_BOOL },
90 [IFACE_ATTR_RA_MININTERVAL] = { .name = "ra_mininterval", .type = BLOBMSG_TYPE_INT32 },
91 [IFACE_ATTR_RA_MAXINTERVAL] = { .name = "ra_maxinterval", .type = BLOBMSG_TYPE_INT32 },
92 [IFACE_ATTR_RA_LIFETIME] = { .name = "ra_lifetime", .type = BLOBMSG_TYPE_INT32 },
93 [IFACE_ATTR_RA_USELEASETIME] = { .name = "ra_useleasetime", .type = BLOBMSG_TYPE_BOOL },
94 [IFACE_ATTR_RA_REACHABLETIME] = { .name = "ra_reachabletime", .type = BLOBMSG_TYPE_INT32 },
95 [IFACE_ATTR_RA_HOPLIMIT] = { .name = "ra_hoplimit", .type = BLOBMSG_TYPE_INT32 },
96 [IFACE_ATTR_RA_MTU] = { .name = "ra_mtu", .type = BLOBMSG_TYPE_INT32 },
97 [IFACE_ATTR_NDPROXY_ROUTING] = { .name = "ndproxy_routing", .type = BLOBMSG_TYPE_BOOL },
98 [IFACE_ATTR_NDPROXY_SLAVE] = { .name = "ndproxy_slave", .type = BLOBMSG_TYPE_BOOL },
101 static const struct uci_blob_param_info iface_attr_info[IFACE_ATTR_MAX] = {
102 [IFACE_ATTR_UPSTREAM] = { .type = BLOBMSG_TYPE_STRING },
103 [IFACE_ATTR_DNS] = { .type = BLOBMSG_TYPE_STRING },
104 [IFACE_ATTR_DOMAIN] = { .type = BLOBMSG_TYPE_STRING },
107 const struct uci_blob_param_list interface_attr_list = {
108 .n_params = IFACE_ATTR_MAX,
109 .params = iface_attrs,
110 .info = iface_attr_info,
118 LEASE_ATTR_LEASETIME,
123 static const struct blobmsg_policy lease_attrs[LEASE_ATTR_MAX] = {
124 [LEASE_ATTR_IP] = { .name = "ip", .type = BLOBMSG_TYPE_STRING },
125 [LEASE_ATTR_MAC] = { .name = "mac", .type = BLOBMSG_TYPE_STRING },
126 [LEASE_ATTR_DUID] = { .name = "duid", .type = BLOBMSG_TYPE_STRING },
127 [LEASE_ATTR_HOSTID] = { .name = "hostid", .type = BLOBMSG_TYPE_STRING },
128 [LEASE_ATTR_LEASETIME] = { .name = "leasetime", .type = BLOBMSG_TYPE_STRING },
129 [LEASE_ATTR_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
132 const struct uci_blob_param_list lease_attr_list = {
133 .n_params = LEASE_ATTR_MAX,
134 .params = lease_attrs,
139 ODHCPD_ATTR_MAINDHCP,
140 ODHCPD_ATTR_LEASEFILE,
141 ODHCPD_ATTR_LEASETRIGGER,
142 ODHCPD_ATTR_LOGLEVEL,
146 static const struct blobmsg_policy odhcpd_attrs[LEASE_ATTR_MAX] = {
147 [ODHCPD_ATTR_LEGACY] = { .name = "legacy", .type = BLOBMSG_TYPE_BOOL },
148 [ODHCPD_ATTR_MAINDHCP] = { .name = "maindhcp", .type = BLOBMSG_TYPE_BOOL },
149 [ODHCPD_ATTR_LEASEFILE] = { .name = "leasefile", .type = BLOBMSG_TYPE_STRING },
150 [ODHCPD_ATTR_LEASETRIGGER] = { .name = "leasetrigger", .type = BLOBMSG_TYPE_STRING },
151 [ODHCPD_ATTR_LOGLEVEL] = { .name = "loglevel", .type = BLOBMSG_TYPE_INT32 },
154 const struct uci_blob_param_list odhcpd_attr_list = {
155 .n_params = ODHCPD_ATTR_MAX,
156 .params = odhcpd_attrs,
159 static int mkdir_p(char *dir, mode_t mask)
161 char *l = strrchr(dir, '/');
169 if (mkdir_p(dir, mask))
174 ret = mkdir(dir, mask);
175 if (ret && errno == EEXIST)
179 syslog(LOG_ERR, "mkdir(%s, %d) failed: %s\n", dir, mask, strerror(errno));
184 static void free_lease(struct lease *l)
193 static struct interface* get_interface(const char *name)
196 list_for_each_entry(c, &interfaces, head)
197 if (!strcmp(c->name, name))
202 static void set_interface_defaults(struct interface *iface)
205 iface->learn_routes = 1;
206 iface->dhcpv4_leasetime = 43200;
207 iface->ra_maxinterval = 600;
208 iface->ra_mininterval = iface->ra_maxinterval/3;
209 iface->ra_lifetime = -1;
212 static void clean_interface(struct interface *iface)
216 free(iface->upstream);
217 free(iface->dhcpv4_router);
218 free(iface->dhcpv4_dns);
219 free(iface->dhcpv6_raw);
220 free(iface->filter_class);
221 memset(&iface->ra, 0, sizeof(*iface) - offsetof(struct interface, ra));
222 set_interface_defaults(iface);
225 static void close_interface(struct interface *iface)
227 if (iface->head.next)
228 list_del(&iface->head);
230 setup_router_interface(iface, false);
231 setup_dhcpv6_interface(iface, false);
232 setup_ndp_interface(iface, false);
233 setup_dhcpv4_interface(iface, false);
235 clean_interface(iface);
239 static int parse_mode(const char *mode)
241 if (!strcmp(mode, "disabled"))
242 return RELAYD_DISABLED;
243 else if (!strcmp(mode, "server"))
244 return RELAYD_SERVER;
245 else if (!strcmp(mode, "relay"))
247 else if (!strcmp(mode, "hybrid"))
248 return RELAYD_HYBRID;
253 static void set_config(struct uci_section *s)
255 struct blob_attr *tb[ODHCPD_ATTR_MAX], *c;
257 blob_buf_init(&b, 0);
258 uci_to_blob(&b, s, &odhcpd_attr_list);
259 blobmsg_parse(odhcpd_attrs, ODHCPD_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
261 if ((c = tb[ODHCPD_ATTR_LEGACY]))
262 config.legacy = blobmsg_get_bool(c);
264 if ((c = tb[ODHCPD_ATTR_MAINDHCP]))
265 config.main_dhcpv4 = blobmsg_get_bool(c);
267 if ((c = tb[ODHCPD_ATTR_LEASEFILE])) {
268 free(config.dhcp_statefile);
269 config.dhcp_statefile = strdup(blobmsg_get_string(c));
272 if ((c = tb[ODHCPD_ATTR_LEASETRIGGER])) {
273 free(config.dhcp_cb);
274 config.dhcp_cb = strdup(blobmsg_get_string(c));
277 if ((c = tb[ODHCPD_ATTR_LOGLEVEL])) {
278 int log_level = (blobmsg_get_u32(c) & LOG_PRIMASK);
280 if (config.log_level != log_level) {
281 config.log_level = log_level;
282 setlogmask(LOG_UPTO(config.log_level));
287 static double parse_leasetime(struct blob_attr *c) {
288 char *val = blobmsg_get_string(c), *endptr = NULL;
289 double time = strcmp(val, "infinite") ? strtod(val, &endptr) : UINT32_MAX;
291 if (time && endptr && endptr[0]) {
292 if (endptr[0] == 's')
294 else if (endptr[0] == 'm')
296 else if (endptr[0] == 'h')
298 else if (endptr[0] == 'd')
300 else if (endptr[0] == 'w')
301 time *= 7 * 24 * 3600;
315 static int set_lease(struct uci_section *s)
317 struct blob_attr *tb[LEASE_ATTR_MAX], *c;
319 blob_buf_init(&b, 0);
320 uci_to_blob(&b, s, &lease_attr_list);
321 blobmsg_parse(lease_attrs, LEASE_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
324 if ((c = tb[LEASE_ATTR_NAME]))
325 hostlen = blobmsg_data_len(c);
327 struct lease *lease = calloc(1, sizeof(*lease) + hostlen);
332 memcpy(lease->hostname, blobmsg_get_string(c), hostlen);
334 if ((c = tb[LEASE_ATTR_IP]))
335 if (inet_pton(AF_INET, blobmsg_get_string(c), &lease->ipaddr) < 0)
338 if ((c = tb[LEASE_ATTR_MAC]))
339 if (!ether_aton_r(blobmsg_get_string(c), &lease->mac))
342 if ((c = tb[LEASE_ATTR_DUID])) {
343 size_t duidlen = (blobmsg_data_len(c) - 1) / 2;
344 lease->duid = malloc(duidlen);
348 ssize_t len = odhcpd_unhexlify(lease->duid,
349 duidlen, blobmsg_get_string(c));
354 lease->duid_len = len;
357 if ((c = tb[LEASE_ATTR_HOSTID])) {
359 lease->hostid = strtoul(blobmsg_get_string(c), NULL, 16);
364 if ((c = tb[LEASE_ATTR_LEASETIME])) {
365 double time = parse_leasetime(c);
369 lease->dhcpv4_leasetime = time;
372 list_add(&lease->head, &leases);
382 int config_parse_interface(void *data, size_t len, const char *name, bool overwrite)
384 struct blob_attr *tb[IFACE_ATTR_MAX], *c;
385 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb, data, len);
387 if (tb[IFACE_ATTR_INTERFACE])
388 name = blobmsg_get_string(tb[IFACE_ATTR_INTERFACE]);
393 struct interface *iface = get_interface(name);
395 iface = calloc(1, sizeof(*iface));
399 strncpy(iface->name, name, sizeof(iface->name) - 1);
401 set_interface_defaults(iface);
403 list_add(&iface->head, &interfaces);
407 const char *ifname = NULL;
409 if ((c = tb[IFACE_ATTR_IFNAME]))
410 ifname = blobmsg_get_string(c);
411 else if ((c = tb[IFACE_ATTR_NETWORKID]))
412 ifname = blobmsg_get_string(c);
416 if (overwrite || !iface->ifname[0])
417 ifname = ubus_get_ifname(name);
420 if (!iface->ifname[0] && !ifname)
424 strncpy(iface->ifname, ifname, sizeof(iface->ifname) - 1);
426 if ((iface->ifindex = if_nametoindex(iface->ifname)) <= 0)
431 if ((c = tb[IFACE_ATTR_DYNAMICDHCP]))
432 iface->no_dynamic_dhcp = !blobmsg_get_bool(c);
434 if (overwrite && (c = tb[IFACE_ATTR_IGNORE]))
435 iface->ignore = blobmsg_get_bool(c);
437 if ((c = tb[IFACE_ATTR_LEASETIME])) {
438 double time = parse_leasetime(c);
442 iface->dhcpv4_leasetime = time;
445 if ((c = tb[IFACE_ATTR_START])) {
446 iface->dhcpv4_start.s_addr = htonl(blobmsg_get_u32(c));
448 if (config.main_dhcpv4 && config.legacy)
449 iface->dhcpv4 = RELAYD_SERVER;
452 if ((c = tb[IFACE_ATTR_LIMIT]))
453 iface->dhcpv4_end.s_addr = htonl(
454 ntohl(iface->dhcpv4_start.s_addr) + blobmsg_get_u32(c));
456 if ((c = tb[IFACE_ATTR_MASTER]))
457 iface->master = blobmsg_get_bool(c);
459 if (overwrite && (c = tb[IFACE_ATTR_UPSTREAM])) {
460 struct blob_attr *cur;
463 blobmsg_for_each_attr(cur, c, rem) {
464 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
467 iface->upstream = realloc(iface->upstream,
468 iface->upstream_len + blobmsg_data_len(cur));
469 if (!iface->upstream)
472 memcpy(iface->upstream + iface->upstream_len, blobmsg_get_string(cur), blobmsg_data_len(cur));
473 iface->upstream_len += blobmsg_data_len(cur);
478 if ((c = tb[IFACE_ATTR_RA])) {
479 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
485 if ((c = tb[IFACE_ATTR_DHCPV4])) {
486 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0) {
487 if (config.main_dhcpv4)
488 iface->dhcpv4 = mode;
494 if ((c = tb[IFACE_ATTR_DHCPV6])) {
495 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
496 iface->dhcpv6 = mode;
501 if ((c = tb[IFACE_ATTR_NDP])) {
502 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
508 if ((c = tb[IFACE_ATTR_ROUTER])) {
509 struct blob_attr *cur;
512 blobmsg_for_each_attr(cur, c, rem) {
513 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
516 struct in_addr addr4;
517 if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
518 iface->dhcpv4_router = realloc(iface->dhcpv4_router,
519 (++iface->dhcpv4_router_cnt) * sizeof(*iface->dhcpv4_router));
520 if (!iface->dhcpv4_router)
523 iface->dhcpv4_router[iface->dhcpv4_router_cnt - 1] = addr4;
529 if ((c = tb[IFACE_ATTR_DNS])) {
530 struct blob_attr *cur;
533 iface->always_rewrite_dns = true;
534 blobmsg_for_each_attr(cur, c, rem) {
535 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
538 struct in_addr addr4;
539 struct in6_addr addr6;
540 if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
541 iface->dhcpv4_dns = realloc(iface->dhcpv4_dns,
542 (++iface->dhcpv4_dns_cnt) * sizeof(*iface->dhcpv4_dns));
543 if (!iface->dhcpv4_dns)
546 iface->dhcpv4_dns[iface->dhcpv4_dns_cnt - 1] = addr4;
547 } else if (inet_pton(AF_INET6, blobmsg_get_string(cur), &addr6) == 1) {
548 iface->dns = realloc(iface->dns,
549 (++iface->dns_cnt) * sizeof(*iface->dns));
553 iface->dns[iface->dns_cnt - 1] = addr6;
559 if ((c = tb[IFACE_ATTR_DOMAIN])) {
560 struct blob_attr *cur;
563 blobmsg_for_each_attr(cur, c, rem) {
564 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
568 char *domain = blobmsg_get_string(cur);
569 size_t domainlen = strlen(domain);
570 if (domainlen > 0 && domain[domainlen - 1] == '.')
571 domain[domainlen - 1] = 0;
573 int len = dn_comp(domain, buf, sizeof(buf), NULL, NULL);
577 iface->search = realloc(iface->search, iface->search_len + len);
581 memcpy(&iface->search[iface->search_len], buf, len);
582 iface->search_len += len;
586 if ((c = tb[IFACE_ATTR_FILTER_CLASS])) {
587 iface->filter_class = realloc(iface->filter_class, blobmsg_data_len(c) + 1);
588 memcpy(iface->filter_class, blobmsg_get_string(c), blobmsg_data_len(c) + 1);
591 if ((c = tb[IFACE_ATTR_DHCPV6_RAW])) {
592 iface->dhcpv6_raw_len = blobmsg_data_len(c) / 2;
593 iface->dhcpv6_raw = realloc(iface->dhcpv6_raw, iface->dhcpv6_raw_len);
594 odhcpd_unhexlify(iface->dhcpv6_raw, iface->dhcpv6_raw_len, blobmsg_get_string(c));
597 if ((c = tb[IFACE_ATTR_RA_DEFAULT]))
598 iface->default_router = blobmsg_get_u32(c);
600 if ((c = tb[IFACE_ATTR_RA_MANAGEMENT]))
601 iface->managed = blobmsg_get_u32(c);
603 if ((c = tb[IFACE_ATTR_RA_REACHABLETIME])) {
604 iface->ra_reachabletime = blobmsg_get_u32(c);
605 if (iface->ra_reachabletime > 3600000)
609 if ((c = tb[IFACE_ATTR_RA_HOPLIMIT])) {
610 iface->ra_hoplimit = blobmsg_get_u32(c);
611 if (iface->ra_hoplimit > 255)
615 if ((c = tb[IFACE_ATTR_RA_MTU])) {
616 iface->ra_mtu = blobmsg_get_u32(c);
617 if (iface->ra_mtu < 1280)
621 if ((c = tb[IFACE_ATTR_RA_OFFLINK]))
622 iface->ra_not_onlink = blobmsg_get_bool(c);
624 if ((c = tb[IFACE_ATTR_RA_ADVROUTER]))
625 iface->ra_advrouter = blobmsg_get_bool(c);
627 if ((c = tb[IFACE_ATTR_RA_MININTERVAL]))
628 iface->ra_mininterval = blobmsg_get_u32(c);
630 if ((c = tb[IFACE_ATTR_RA_MAXINTERVAL]))
631 iface->ra_maxinterval = blobmsg_get_u32(c);
633 if ((c = tb[IFACE_ATTR_RA_LIFETIME]))
634 iface->ra_lifetime = blobmsg_get_u32(c);
636 if ((c = tb[IFACE_ATTR_RA_USELEASETIME]))
637 iface->ra_useleasetime = blobmsg_get_bool(c);
639 if ((c = tb[IFACE_ATTR_RA_PREFERENCE])) {
640 const char *prio = blobmsg_get_string(c);
642 if (!strcmp(prio, "high"))
643 iface->route_preference = 1;
644 else if (!strcmp(prio, "low"))
645 iface->route_preference = -1;
646 else if (!strcmp(prio, "medium") || !strcmp(prio, "default"))
647 iface->route_preference = 0;
652 if ((c = tb[IFACE_ATTR_PD_MANAGER]))
653 strncpy(iface->dhcpv6_pd_manager, blobmsg_get_string(c),
654 sizeof(iface->dhcpv6_pd_manager) - 1);
656 if ((c = tb[IFACE_ATTR_PD_CER]) &&
657 inet_pton(AF_INET6, blobmsg_get_string(c), &iface->dhcpv6_pd_cer) < 1)
660 if ((c = tb[IFACE_ATTR_NDPROXY_ROUTING]))
661 iface->learn_routes = blobmsg_get_bool(c);
663 if ((c = tb[IFACE_ATTR_NDPROXY_SLAVE]))
664 iface->external = blobmsg_get_bool(c);
669 close_interface(iface);
673 static int set_interface(struct uci_section *s)
675 blob_buf_init(&b, 0);
676 uci_to_blob(&b, s, &interface_attr_list);
678 return config_parse_interface(blob_data(b.head), blob_len(b.head), s->e.name, true);
681 void odhcpd_reload(void)
683 struct uci_context *uci = uci_alloc_context();
685 while (!list_empty(&leases))
686 free_lease(list_first_entry(&leases, struct lease, head));
688 struct interface *master = NULL, *i, *n;
693 list_for_each_entry(i, &interfaces, head)
696 struct uci_package *dhcp = NULL;
697 if (!uci_load(uci, "dhcp", &dhcp)) {
698 struct uci_element *e;
699 uci_foreach_element(&dhcp->sections, e) {
700 struct uci_section *s = uci_to_section(e);
701 if (!strcmp(s->type, "host"))
703 else if (!strcmp(s->type, "odhcpd"))
707 uci_foreach_element(&dhcp->sections, e) {
708 struct uci_section *s = uci_to_section(e);
709 if (!strcmp(s->type, "dhcp"))
714 if (config.dhcp_statefile) {
715 char *path = strdup(config.dhcp_statefile);
717 mkdir_p(dirname(path), 0755);
722 ubus_apply_network();
725 bool any_dhcpv6_slave = false, any_ra_slave = false, any_ndp_slave = false;
728 list_for_each_entry(i, &interfaces, head) {
732 if (i->dhcpv6 == RELAYD_HYBRID || i->dhcpv6 == RELAYD_RELAY)
733 any_dhcpv6_slave = true;
735 if (i->ra == RELAYD_HYBRID || i->ra == RELAYD_RELAY)
738 if (i->ndp == RELAYD_HYBRID || i->ndp == RELAYD_RELAY)
739 any_ndp_slave = true;
742 /* Evaluate hybrid mode for master */
743 list_for_each_entry(i, &interfaces, head) {
747 enum odhcpd_mode hybrid_mode = RELAYD_DISABLED;
749 if (!ubus_has_prefix(i->name, i->ifname))
750 hybrid_mode = RELAYD_RELAY;
753 if (i->dhcpv6 == RELAYD_HYBRID)
754 i->dhcpv6 = hybrid_mode;
756 if (i->dhcpv6 == RELAYD_RELAY && !any_dhcpv6_slave)
757 i->dhcpv6 = RELAYD_DISABLED;
759 if (i->ra == RELAYD_HYBRID)
762 if (i->ra == RELAYD_RELAY && !any_ra_slave)
763 i->ra = RELAYD_DISABLED;
765 if (i->ndp == RELAYD_HYBRID)
766 i->ndp = hybrid_mode;
768 if (i->ndp == RELAYD_RELAY && !any_ndp_slave)
769 i->ndp = RELAYD_DISABLED;
771 if (i->dhcpv6 == RELAYD_RELAY || i->ra == RELAYD_RELAY || i->ndp == RELAYD_RELAY)
776 list_for_each_entry_safe(i, n, &interfaces, head) {
778 /* Resolve hybrid mode */
779 if (i->dhcpv6 == RELAYD_HYBRID)
780 i->dhcpv6 = (master && master->dhcpv6 == RELAYD_RELAY) ?
781 RELAYD_RELAY : RELAYD_SERVER;
783 if (i->ra == RELAYD_HYBRID)
784 i->ra = (master && master->ra == RELAYD_RELAY) ?
785 RELAYD_RELAY : RELAYD_SERVER;
787 if (i->ndp == RELAYD_HYBRID)
788 i->ndp = (master && master->ndp == RELAYD_RELAY) ?
789 RELAYD_RELAY : RELAYD_DISABLED;
791 setup_router_interface(i, !i->ignore || i->ra != RELAYD_DISABLED);
792 setup_dhcpv6_interface(i, !i->ignore || i->dhcpv6 != RELAYD_DISABLED);
793 setup_ndp_interface(i, !i->ignore || i->ndp != RELAYD_DISABLED);
794 setup_dhcpv4_interface(i, !i->ignore || i->dhcpv4 != RELAYD_DISABLED);
799 ndp_handle_addr6_dump();
800 uci_unload(uci, dhcp);
801 uci_free_context(uci);
804 static void handle_signal(int signal)
808 if (signal == SIGHUP) {
809 if (write(reload_pipe[1], b, sizeof(b)) < 0) {}
814 static void reload_cb(struct uloop_fd *u, _unused unsigned int events)
817 if (read(u->fd, b, sizeof(b)) < 0) {}
822 static struct uloop_fd reload_fd = { .cb = reload_cb };
824 void odhcpd_run(void)
826 if (pipe2(reload_pipe, O_NONBLOCK | O_CLOEXEC) < 0) {}
828 reload_fd.fd = reload_pipe[0];
829 uloop_fd_add(&reload_fd, ULOOP_READ);
831 signal(SIGTERM, handle_signal);
832 signal(SIGINT, handle_signal);
833 signal(SIGHUP, handle_signal);
843 while (!list_empty(&interfaces))
844 close_interface(list_first_entry(&interfaces, struct interface, head));