14 #include <libubox/utils.h>
18 static struct blob_buf b;
19 static int reload_pipe[2];
20 struct list_head leases = LIST_HEAD_INIT(leases);
21 struct list_head interfaces = LIST_HEAD_INIT(interfaces);
22 struct config config = {.legacy = false, .main_dhcpv4 = false,
23 .dhcp_cb = NULL, .dhcp_statefile = NULL,
24 .log_level = LOG_INFO};
30 IFACE_ATTR_DYNAMICDHCP,
44 IFACE_ATTR_FILTER_CLASS,
45 IFACE_ATTR_DHCPV6_RAW,
46 IFACE_ATTR_RA_DEFAULT,
47 IFACE_ATTR_RA_MANAGEMENT,
48 IFACE_ATTR_RA_OFFLINK,
49 IFACE_ATTR_RA_PREFERENCE,
50 IFACE_ATTR_RA_ADVROUTER,
51 IFACE_ATTR_RA_MININTERVAL,
52 IFACE_ATTR_RA_MAXINTERVAL,
53 IFACE_ATTR_RA_LIFETIME,
54 IFACE_ATTR_RA_USELEASETIME,
55 IFACE_ATTR_RA_REACHABLETIME,
56 IFACE_ATTR_RA_RETRANSTIME,
57 IFACE_ATTR_RA_HOPLIMIT,
59 IFACE_ATTR_PD_MANAGER,
61 IFACE_ATTR_NDPROXY_ROUTING,
62 IFACE_ATTR_NDPROXY_SLAVE,
66 static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
67 [IFACE_ATTR_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
68 [IFACE_ATTR_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
69 [IFACE_ATTR_NETWORKID] = { .name = "networkid", .type = BLOBMSG_TYPE_STRING },
70 [IFACE_ATTR_DYNAMICDHCP] = { .name = "dynamicdhcp", .type = BLOBMSG_TYPE_BOOL },
71 [IFACE_ATTR_IGNORE] = { .name = "ignore", .type = BLOBMSG_TYPE_BOOL },
72 [IFACE_ATTR_LEASETIME] = { .name = "leasetime", .type = BLOBMSG_TYPE_STRING },
73 [IFACE_ATTR_START] = { .name = "start", .type = BLOBMSG_TYPE_INT32 },
74 [IFACE_ATTR_LIMIT] = { .name = "limit", .type = BLOBMSG_TYPE_INT32 },
75 [IFACE_ATTR_MASTER] = { .name = "master", .type = BLOBMSG_TYPE_BOOL },
76 [IFACE_ATTR_UPSTREAM] = { .name = "upstream", .type = BLOBMSG_TYPE_ARRAY },
77 [IFACE_ATTR_RA] = { .name = "ra", .type = BLOBMSG_TYPE_STRING },
78 [IFACE_ATTR_DHCPV4] = { .name = "dhcpv4", .type = BLOBMSG_TYPE_STRING },
79 [IFACE_ATTR_DHCPV6] = { .name = "dhcpv6", .type = BLOBMSG_TYPE_STRING },
80 [IFACE_ATTR_NDP] = { .name = "ndp", .type = BLOBMSG_TYPE_STRING },
81 [IFACE_ATTR_ROUTER] = { .name = "router", .type = BLOBMSG_TYPE_ARRAY },
82 [IFACE_ATTR_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
83 [IFACE_ATTR_DOMAIN] = { .name = "domain", .type = BLOBMSG_TYPE_ARRAY },
84 [IFACE_ATTR_FILTER_CLASS] = { .name = "filter_class", .type = BLOBMSG_TYPE_STRING },
85 [IFACE_ATTR_DHCPV6_RAW] = { .name = "dhcpv6_raw", .type = BLOBMSG_TYPE_STRING },
86 [IFACE_ATTR_PD_MANAGER] = { .name = "pd_manager", .type = BLOBMSG_TYPE_STRING },
87 [IFACE_ATTR_PD_CER] = { .name = "pd_cer", .type = BLOBMSG_TYPE_STRING },
88 [IFACE_ATTR_RA_DEFAULT] = { .name = "ra_default", .type = BLOBMSG_TYPE_INT32 },
89 [IFACE_ATTR_RA_MANAGEMENT] = { .name = "ra_management", .type = BLOBMSG_TYPE_INT32 },
90 [IFACE_ATTR_RA_OFFLINK] = { .name = "ra_offlink", .type = BLOBMSG_TYPE_BOOL },
91 [IFACE_ATTR_RA_PREFERENCE] = { .name = "ra_preference", .type = BLOBMSG_TYPE_STRING },
92 [IFACE_ATTR_RA_ADVROUTER] = { .name = "ra_advrouter", .type = BLOBMSG_TYPE_BOOL },
93 [IFACE_ATTR_RA_MININTERVAL] = { .name = "ra_mininterval", .type = BLOBMSG_TYPE_INT32 },
94 [IFACE_ATTR_RA_MAXINTERVAL] = { .name = "ra_maxinterval", .type = BLOBMSG_TYPE_INT32 },
95 [IFACE_ATTR_RA_LIFETIME] = { .name = "ra_lifetime", .type = BLOBMSG_TYPE_INT32 },
96 [IFACE_ATTR_RA_USELEASETIME] = { .name = "ra_useleasetime", .type = BLOBMSG_TYPE_BOOL },
97 [IFACE_ATTR_RA_REACHABLETIME] = { .name = "ra_reachabletime", .type = BLOBMSG_TYPE_INT32 },
98 [IFACE_ATTR_RA_RETRANSTIME] = { .name = "ra_retranstime", .type = BLOBMSG_TYPE_INT32 },
99 [IFACE_ATTR_RA_HOPLIMIT] = { .name = "ra_hoplimit", .type = BLOBMSG_TYPE_INT32 },
100 [IFACE_ATTR_RA_MTU] = { .name = "ra_mtu", .type = BLOBMSG_TYPE_INT32 },
101 [IFACE_ATTR_NDPROXY_ROUTING] = { .name = "ndproxy_routing", .type = BLOBMSG_TYPE_BOOL },
102 [IFACE_ATTR_NDPROXY_SLAVE] = { .name = "ndproxy_slave", .type = BLOBMSG_TYPE_BOOL },
105 static const struct uci_blob_param_info iface_attr_info[IFACE_ATTR_MAX] = {
106 [IFACE_ATTR_UPSTREAM] = { .type = BLOBMSG_TYPE_STRING },
107 [IFACE_ATTR_DNS] = { .type = BLOBMSG_TYPE_STRING },
108 [IFACE_ATTR_DOMAIN] = { .type = BLOBMSG_TYPE_STRING },
111 const struct uci_blob_param_list interface_attr_list = {
112 .n_params = IFACE_ATTR_MAX,
113 .params = iface_attrs,
114 .info = iface_attr_info,
122 LEASE_ATTR_LEASETIME,
127 static const struct blobmsg_policy lease_attrs[LEASE_ATTR_MAX] = {
128 [LEASE_ATTR_IP] = { .name = "ip", .type = BLOBMSG_TYPE_STRING },
129 [LEASE_ATTR_MAC] = { .name = "mac", .type = BLOBMSG_TYPE_STRING },
130 [LEASE_ATTR_DUID] = { .name = "duid", .type = BLOBMSG_TYPE_STRING },
131 [LEASE_ATTR_HOSTID] = { .name = "hostid", .type = BLOBMSG_TYPE_STRING },
132 [LEASE_ATTR_LEASETIME] = { .name = "leasetime", .type = BLOBMSG_TYPE_STRING },
133 [LEASE_ATTR_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
136 const struct uci_blob_param_list lease_attr_list = {
137 .n_params = LEASE_ATTR_MAX,
138 .params = lease_attrs,
143 ODHCPD_ATTR_MAINDHCP,
144 ODHCPD_ATTR_LEASEFILE,
145 ODHCPD_ATTR_LEASETRIGGER,
146 ODHCPD_ATTR_LOGLEVEL,
150 static const struct blobmsg_policy odhcpd_attrs[LEASE_ATTR_MAX] = {
151 [ODHCPD_ATTR_LEGACY] = { .name = "legacy", .type = BLOBMSG_TYPE_BOOL },
152 [ODHCPD_ATTR_MAINDHCP] = { .name = "maindhcp", .type = BLOBMSG_TYPE_BOOL },
153 [ODHCPD_ATTR_LEASEFILE] = { .name = "leasefile", .type = BLOBMSG_TYPE_STRING },
154 [ODHCPD_ATTR_LEASETRIGGER] = { .name = "leasetrigger", .type = BLOBMSG_TYPE_STRING },
155 [ODHCPD_ATTR_LOGLEVEL] = { .name = "loglevel", .type = BLOBMSG_TYPE_INT32 },
158 const struct uci_blob_param_list odhcpd_attr_list = {
159 .n_params = ODHCPD_ATTR_MAX,
160 .params = odhcpd_attrs,
163 static int mkdir_p(char *dir, mode_t mask)
165 char *l = strrchr(dir, '/');
173 if (mkdir_p(dir, mask))
178 ret = mkdir(dir, mask);
179 if (ret && errno == EEXIST)
183 syslog(LOG_ERR, "mkdir(%s, %d) failed: %s\n", dir, mask, strerror(errno));
188 static void free_lease(struct lease *l)
197 static struct interface* get_interface(const char *name)
200 list_for_each_entry(c, &interfaces, head)
201 if (!strcmp(c->name, name))
206 static void set_interface_defaults(struct interface *iface)
209 iface->learn_routes = 1;
210 iface->dhcpv4_leasetime = 43200;
211 iface->ra_maxinterval = 600;
212 iface->ra_mininterval = iface->ra_maxinterval/3;
213 iface->ra_lifetime = -1;
216 static void clean_interface(struct interface *iface)
220 free(iface->upstream);
221 free(iface->dhcpv4_router);
222 free(iface->dhcpv4_dns);
223 free(iface->dhcpv6_raw);
224 free(iface->filter_class);
225 memset(&iface->ra, 0, sizeof(*iface) - offsetof(struct interface, ra));
226 set_interface_defaults(iface);
229 static void close_interface(struct interface *iface)
231 if (iface->head.next)
232 list_del(&iface->head);
234 setup_router_interface(iface, false);
235 setup_dhcpv6_interface(iface, false);
236 setup_ndp_interface(iface, false);
237 setup_dhcpv4_interface(iface, false);
239 clean_interface(iface);
244 static int parse_mode(const char *mode)
246 if (!strcmp(mode, "disabled"))
247 return RELAYD_DISABLED;
248 else if (!strcmp(mode, "server"))
249 return RELAYD_SERVER;
250 else if (!strcmp(mode, "relay"))
252 else if (!strcmp(mode, "hybrid"))
253 return RELAYD_HYBRID;
258 static void set_config(struct uci_section *s)
260 struct blob_attr *tb[ODHCPD_ATTR_MAX], *c;
262 blob_buf_init(&b, 0);
263 uci_to_blob(&b, s, &odhcpd_attr_list);
264 blobmsg_parse(odhcpd_attrs, ODHCPD_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
266 if ((c = tb[ODHCPD_ATTR_LEGACY]))
267 config.legacy = blobmsg_get_bool(c);
269 if ((c = tb[ODHCPD_ATTR_MAINDHCP]))
270 config.main_dhcpv4 = blobmsg_get_bool(c);
272 if ((c = tb[ODHCPD_ATTR_LEASEFILE])) {
273 free(config.dhcp_statefile);
274 config.dhcp_statefile = strdup(blobmsg_get_string(c));
277 if ((c = tb[ODHCPD_ATTR_LEASETRIGGER])) {
278 free(config.dhcp_cb);
279 config.dhcp_cb = strdup(blobmsg_get_string(c));
282 if ((c = tb[ODHCPD_ATTR_LOGLEVEL])) {
283 int log_level = (blobmsg_get_u32(c) & LOG_PRIMASK);
285 if (config.log_level != log_level) {
286 config.log_level = log_level;
287 setlogmask(LOG_UPTO(config.log_level));
292 static double parse_leasetime(struct blob_attr *c) {
293 char *val = blobmsg_get_string(c), *endptr = NULL;
294 double time = strcmp(val, "infinite") ? strtod(val, &endptr) : UINT32_MAX;
296 if (time && endptr && endptr[0]) {
297 if (endptr[0] == 's')
299 else if (endptr[0] == 'm')
301 else if (endptr[0] == 'h')
303 else if (endptr[0] == 'd')
305 else if (endptr[0] == 'w')
306 time *= 7 * 24 * 3600;
320 static int set_lease(struct uci_section *s)
322 struct blob_attr *tb[LEASE_ATTR_MAX], *c;
324 blob_buf_init(&b, 0);
325 uci_to_blob(&b, s, &lease_attr_list);
326 blobmsg_parse(lease_attrs, LEASE_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
329 if ((c = tb[LEASE_ATTR_NAME]))
330 hostlen = blobmsg_data_len(c);
332 struct lease *lease = calloc(1, sizeof(*lease) + hostlen);
337 memcpy(lease->hostname, blobmsg_get_string(c), hostlen);
339 if ((c = tb[LEASE_ATTR_IP]))
340 if (inet_pton(AF_INET, blobmsg_get_string(c), &lease->ipaddr) < 0)
343 if ((c = tb[LEASE_ATTR_MAC]))
344 if (!ether_aton_r(blobmsg_get_string(c), &lease->mac))
347 if ((c = tb[LEASE_ATTR_DUID])) {
348 size_t duidlen = (blobmsg_data_len(c) - 1) / 2;
349 lease->duid = malloc(duidlen);
353 ssize_t len = odhcpd_unhexlify(lease->duid,
354 duidlen, blobmsg_get_string(c));
359 lease->duid_len = len;
362 if ((c = tb[LEASE_ATTR_HOSTID])) {
364 lease->hostid = strtoul(blobmsg_get_string(c), NULL, 16);
369 if ((c = tb[LEASE_ATTR_LEASETIME])) {
370 double time = parse_leasetime(c);
374 lease->dhcpv4_leasetime = time;
377 list_add(&lease->head, &leases);
387 int config_parse_interface(void *data, size_t len, const char *name, bool overwrite)
389 struct blob_attr *tb[IFACE_ATTR_MAX], *c;
390 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb, data, len);
392 if (tb[IFACE_ATTR_INTERFACE])
393 name = blobmsg_get_string(tb[IFACE_ATTR_INTERFACE]);
398 struct interface *iface = get_interface(name);
402 iface = calloc_a(sizeof(*iface), &iface_name, strlen(name) + 1);
406 iface->name = strcpy(iface_name, name);
408 set_interface_defaults(iface);
410 list_add(&iface->head, &interfaces);
414 const char *ifname = NULL;
416 if ((c = tb[IFACE_ATTR_IFNAME]))
417 ifname = blobmsg_get_string(c);
418 else if ((c = tb[IFACE_ATTR_NETWORKID]))
419 ifname = blobmsg_get_string(c);
423 if (overwrite || !iface->ifname)
424 ifname = ubus_get_ifname(name);
427 if (!iface->ifname && !ifname)
432 iface->ifname = strdup(ifname);
438 if ((iface->ifindex = if_nametoindex(iface->ifname)) <= 0)
443 if ((c = tb[IFACE_ATTR_DYNAMICDHCP]))
444 iface->no_dynamic_dhcp = !blobmsg_get_bool(c);
446 if (overwrite && (c = tb[IFACE_ATTR_IGNORE]))
447 iface->ignore = blobmsg_get_bool(c);
449 if ((c = tb[IFACE_ATTR_LEASETIME])) {
450 double time = parse_leasetime(c);
454 iface->dhcpv4_leasetime = time;
457 if ((c = tb[IFACE_ATTR_START])) {
458 iface->dhcpv4_start.s_addr = htonl(blobmsg_get_u32(c));
460 if (config.main_dhcpv4 && config.legacy)
461 iface->dhcpv4 = RELAYD_SERVER;
464 if ((c = tb[IFACE_ATTR_LIMIT]))
465 iface->dhcpv4_end.s_addr = htonl(
466 ntohl(iface->dhcpv4_start.s_addr) + blobmsg_get_u32(c));
468 if ((c = tb[IFACE_ATTR_MASTER]))
469 iface->master = blobmsg_get_bool(c);
471 if (overwrite && (c = tb[IFACE_ATTR_UPSTREAM])) {
472 struct blob_attr *cur;
475 blobmsg_for_each_attr(cur, c, rem) {
476 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
479 iface->upstream = realloc(iface->upstream,
480 iface->upstream_len + blobmsg_data_len(cur));
481 if (!iface->upstream)
484 memcpy(iface->upstream + iface->upstream_len, blobmsg_get_string(cur), blobmsg_data_len(cur));
485 iface->upstream_len += blobmsg_data_len(cur);
490 if ((c = tb[IFACE_ATTR_RA])) {
491 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
497 if ((c = tb[IFACE_ATTR_DHCPV4])) {
498 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0) {
499 if (config.main_dhcpv4)
500 iface->dhcpv4 = mode;
506 if ((c = tb[IFACE_ATTR_DHCPV6])) {
507 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
508 iface->dhcpv6 = mode;
513 if ((c = tb[IFACE_ATTR_NDP])) {
514 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
520 if ((c = tb[IFACE_ATTR_ROUTER])) {
521 struct blob_attr *cur;
524 blobmsg_for_each_attr(cur, c, rem) {
525 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
528 struct in_addr addr4;
529 if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
530 iface->dhcpv4_router = realloc(iface->dhcpv4_router,
531 (++iface->dhcpv4_router_cnt) * sizeof(*iface->dhcpv4_router));
532 if (!iface->dhcpv4_router)
535 iface->dhcpv4_router[iface->dhcpv4_router_cnt - 1] = addr4;
541 if ((c = tb[IFACE_ATTR_DNS])) {
542 struct blob_attr *cur;
545 iface->always_rewrite_dns = true;
546 blobmsg_for_each_attr(cur, c, rem) {
547 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
550 struct in_addr addr4;
551 struct in6_addr addr6;
552 if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
553 iface->dhcpv4_dns = realloc(iface->dhcpv4_dns,
554 (++iface->dhcpv4_dns_cnt) * sizeof(*iface->dhcpv4_dns));
555 if (!iface->dhcpv4_dns)
558 iface->dhcpv4_dns[iface->dhcpv4_dns_cnt - 1] = addr4;
559 } else if (inet_pton(AF_INET6, blobmsg_get_string(cur), &addr6) == 1) {
560 iface->dns = realloc(iface->dns,
561 (++iface->dns_cnt) * sizeof(*iface->dns));
565 iface->dns[iface->dns_cnt - 1] = addr6;
571 if ((c = tb[IFACE_ATTR_DOMAIN])) {
572 struct blob_attr *cur;
575 blobmsg_for_each_attr(cur, c, rem) {
576 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
580 char *domain = blobmsg_get_string(cur);
581 size_t domainlen = strlen(domain);
582 if (domainlen > 0 && domain[domainlen - 1] == '.')
583 domain[domainlen - 1] = 0;
585 int len = dn_comp(domain, buf, sizeof(buf), NULL, NULL);
589 iface->search = realloc(iface->search, iface->search_len + len);
593 memcpy(&iface->search[iface->search_len], buf, len);
594 iface->search_len += len;
598 if ((c = tb[IFACE_ATTR_FILTER_CLASS])) {
599 iface->filter_class = realloc(iface->filter_class, blobmsg_data_len(c) + 1);
600 memcpy(iface->filter_class, blobmsg_get_string(c), blobmsg_data_len(c) + 1);
603 if ((c = tb[IFACE_ATTR_DHCPV6_RAW])) {
604 iface->dhcpv6_raw_len = blobmsg_data_len(c) / 2;
605 iface->dhcpv6_raw = realloc(iface->dhcpv6_raw, iface->dhcpv6_raw_len);
606 odhcpd_unhexlify(iface->dhcpv6_raw, iface->dhcpv6_raw_len, blobmsg_get_string(c));
609 if ((c = tb[IFACE_ATTR_RA_DEFAULT]))
610 iface->default_router = blobmsg_get_u32(c);
612 if ((c = tb[IFACE_ATTR_RA_MANAGEMENT]))
613 iface->managed = blobmsg_get_u32(c);
615 if ((c = tb[IFACE_ATTR_RA_REACHABLETIME])) {
616 uint32_t ra_reachabletime = blobmsg_get_u32(c);
617 if (ra_reachabletime > 3600000)
620 iface->ra_reachabletime = ra_reachabletime;
623 if ((c = tb[IFACE_ATTR_RA_RETRANSTIME])) {
624 uint32_t ra_retranstime = blobmsg_get_u32(c);
625 if (ra_retranstime > 60000)
628 iface->ra_retranstime = ra_retranstime;
631 if ((c = tb[IFACE_ATTR_RA_HOPLIMIT])) {
632 uint32_t ra_hoplimit = blobmsg_get_u32(c);
633 if (ra_hoplimit > 255)
636 iface->ra_hoplimit = ra_hoplimit;
639 if ((c = tb[IFACE_ATTR_RA_MTU])) {
640 uint32_t ra_mtu = blobmsg_get_u32(c);
641 if (ra_mtu < 1280 || ra_mtu > 65535)
644 iface->ra_mtu = ra_mtu;
647 if ((c = tb[IFACE_ATTR_RA_OFFLINK]))
648 iface->ra_not_onlink = blobmsg_get_bool(c);
650 if ((c = tb[IFACE_ATTR_RA_ADVROUTER]))
651 iface->ra_advrouter = blobmsg_get_bool(c);
653 if ((c = tb[IFACE_ATTR_RA_MININTERVAL]))
654 iface->ra_mininterval = blobmsg_get_u32(c);
656 if ((c = tb[IFACE_ATTR_RA_MAXINTERVAL]))
657 iface->ra_maxinterval = blobmsg_get_u32(c);
659 if ((c = tb[IFACE_ATTR_RA_LIFETIME]))
660 iface->ra_lifetime = blobmsg_get_u32(c);
662 if ((c = tb[IFACE_ATTR_RA_USELEASETIME]))
663 iface->ra_useleasetime = blobmsg_get_bool(c);
665 if ((c = tb[IFACE_ATTR_RA_PREFERENCE])) {
666 const char *prio = blobmsg_get_string(c);
668 if (!strcmp(prio, "high"))
669 iface->route_preference = 1;
670 else if (!strcmp(prio, "low"))
671 iface->route_preference = -1;
672 else if (!strcmp(prio, "medium") || !strcmp(prio, "default"))
673 iface->route_preference = 0;
678 if ((c = tb[IFACE_ATTR_PD_MANAGER]))
679 strncpy(iface->dhcpv6_pd_manager, blobmsg_get_string(c),
680 sizeof(iface->dhcpv6_pd_manager) - 1);
682 if ((c = tb[IFACE_ATTR_PD_CER]) &&
683 inet_pton(AF_INET6, blobmsg_get_string(c), &iface->dhcpv6_pd_cer) < 1)
686 if ((c = tb[IFACE_ATTR_NDPROXY_ROUTING]))
687 iface->learn_routes = blobmsg_get_bool(c);
689 if ((c = tb[IFACE_ATTR_NDPROXY_SLAVE]))
690 iface->external = blobmsg_get_bool(c);
695 close_interface(iface);
699 static int set_interface(struct uci_section *s)
701 blob_buf_init(&b, 0);
702 uci_to_blob(&b, s, &interface_attr_list);
704 return config_parse_interface(blob_data(b.head), blob_len(b.head), s->e.name, true);
707 void odhcpd_reload(void)
709 struct uci_context *uci = uci_alloc_context();
711 while (!list_empty(&leases))
712 free_lease(list_first_entry(&leases, struct lease, head));
714 struct interface *master = NULL, *i, *n;
719 list_for_each_entry(i, &interfaces, head)
722 struct uci_package *dhcp = NULL;
723 if (!uci_load(uci, "dhcp", &dhcp)) {
724 struct uci_element *e;
725 uci_foreach_element(&dhcp->sections, e) {
726 struct uci_section *s = uci_to_section(e);
727 if (!strcmp(s->type, "host"))
729 else if (!strcmp(s->type, "odhcpd"))
733 uci_foreach_element(&dhcp->sections, e) {
734 struct uci_section *s = uci_to_section(e);
735 if (!strcmp(s->type, "dhcp"))
740 if (config.dhcp_statefile) {
741 char *path = strdup(config.dhcp_statefile);
743 mkdir_p(dirname(path), 0755);
748 ubus_apply_network();
751 bool any_dhcpv6_slave = false, any_ra_slave = false, any_ndp_slave = false;
754 list_for_each_entry(i, &interfaces, head) {
758 if (i->dhcpv6 == RELAYD_HYBRID || i->dhcpv6 == RELAYD_RELAY)
759 any_dhcpv6_slave = true;
761 if (i->ra == RELAYD_HYBRID || i->ra == RELAYD_RELAY)
764 if (i->ndp == RELAYD_HYBRID || i->ndp == RELAYD_RELAY)
765 any_ndp_slave = true;
768 /* Evaluate hybrid mode for master */
769 list_for_each_entry(i, &interfaces, head) {
773 enum odhcpd_mode hybrid_mode = RELAYD_DISABLED;
775 if (!ubus_has_prefix(i->name, i->ifname))
776 hybrid_mode = RELAYD_RELAY;
779 if (i->dhcpv6 == RELAYD_HYBRID)
780 i->dhcpv6 = hybrid_mode;
782 if (i->dhcpv6 == RELAYD_RELAY && !any_dhcpv6_slave)
783 i->dhcpv6 = RELAYD_DISABLED;
785 if (i->ra == RELAYD_HYBRID)
788 if (i->ra == RELAYD_RELAY && !any_ra_slave)
789 i->ra = RELAYD_DISABLED;
791 if (i->ndp == RELAYD_HYBRID)
792 i->ndp = hybrid_mode;
794 if (i->ndp == RELAYD_RELAY && !any_ndp_slave)
795 i->ndp = RELAYD_DISABLED;
797 if (i->dhcpv6 == RELAYD_RELAY || i->ra == RELAYD_RELAY || i->ndp == RELAYD_RELAY)
802 list_for_each_entry_safe(i, n, &interfaces, head) {
804 /* Resolve hybrid mode */
805 if (i->dhcpv6 == RELAYD_HYBRID)
806 i->dhcpv6 = (master && master->dhcpv6 == RELAYD_RELAY) ?
807 RELAYD_RELAY : RELAYD_SERVER;
809 if (i->ra == RELAYD_HYBRID)
810 i->ra = (master && master->ra == RELAYD_RELAY) ?
811 RELAYD_RELAY : RELAYD_SERVER;
813 if (i->ndp == RELAYD_HYBRID)
814 i->ndp = (master && master->ndp == RELAYD_RELAY) ?
815 RELAYD_RELAY : RELAYD_DISABLED;
817 setup_router_interface(i, !i->ignore || i->ra != RELAYD_DISABLED);
818 setup_dhcpv6_interface(i, !i->ignore || i->dhcpv6 != RELAYD_DISABLED);
819 setup_ndp_interface(i, !i->ignore || i->ndp != RELAYD_DISABLED);
820 setup_dhcpv4_interface(i, !i->ignore || i->dhcpv4 != RELAYD_DISABLED);
825 ndp_handle_addr6_dump();
826 uci_unload(uci, dhcp);
827 uci_free_context(uci);
830 static void handle_signal(int signal)
834 if (signal == SIGHUP) {
835 if (write(reload_pipe[1], b, sizeof(b)) < 0) {}
840 static void reload_cb(struct uloop_fd *u, _unused unsigned int events)
843 if (read(u->fd, b, sizeof(b)) < 0) {}
848 static struct uloop_fd reload_fd = { .cb = reload_cb };
850 void odhcpd_run(void)
852 if (pipe2(reload_pipe, O_NONBLOCK | O_CLOEXEC) < 0) {}
854 reload_fd.fd = reload_pipe[0];
855 uloop_fd_add(&reload_fd, ULOOP_READ);
857 signal(SIGTERM, handle_signal);
858 signal(SIGINT, handle_signal);
859 signal(SIGHUP, handle_signal);
869 while (!list_empty(&interfaces))
870 close_interface(list_first_entry(&interfaces, struct interface, head));