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_RETRANSTIME,
55 IFACE_ATTR_RA_HOPLIMIT,
57 IFACE_ATTR_PD_MANAGER,
59 IFACE_ATTR_NDPROXY_ROUTING,
60 IFACE_ATTR_NDPROXY_SLAVE,
64 static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
65 [IFACE_ATTR_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
66 [IFACE_ATTR_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
67 [IFACE_ATTR_NETWORKID] = { .name = "networkid", .type = BLOBMSG_TYPE_STRING },
68 [IFACE_ATTR_DYNAMICDHCP] = { .name = "dynamicdhcp", .type = BLOBMSG_TYPE_BOOL },
69 [IFACE_ATTR_IGNORE] = { .name = "ignore", .type = BLOBMSG_TYPE_BOOL },
70 [IFACE_ATTR_LEASETIME] = { .name = "leasetime", .type = BLOBMSG_TYPE_STRING },
71 [IFACE_ATTR_START] = { .name = "start", .type = BLOBMSG_TYPE_INT32 },
72 [IFACE_ATTR_LIMIT] = { .name = "limit", .type = BLOBMSG_TYPE_INT32 },
73 [IFACE_ATTR_MASTER] = { .name = "master", .type = BLOBMSG_TYPE_BOOL },
74 [IFACE_ATTR_UPSTREAM] = { .name = "upstream", .type = BLOBMSG_TYPE_ARRAY },
75 [IFACE_ATTR_RA] = { .name = "ra", .type = BLOBMSG_TYPE_STRING },
76 [IFACE_ATTR_DHCPV4] = { .name = "dhcpv4", .type = BLOBMSG_TYPE_STRING },
77 [IFACE_ATTR_DHCPV6] = { .name = "dhcpv6", .type = BLOBMSG_TYPE_STRING },
78 [IFACE_ATTR_NDP] = { .name = "ndp", .type = BLOBMSG_TYPE_STRING },
79 [IFACE_ATTR_ROUTER] = { .name = "router", .type = BLOBMSG_TYPE_ARRAY },
80 [IFACE_ATTR_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
81 [IFACE_ATTR_DOMAIN] = { .name = "domain", .type = BLOBMSG_TYPE_ARRAY },
82 [IFACE_ATTR_FILTER_CLASS] = { .name = "filter_class", .type = BLOBMSG_TYPE_STRING },
83 [IFACE_ATTR_DHCPV6_RAW] = { .name = "dhcpv6_raw", .type = BLOBMSG_TYPE_STRING },
84 [IFACE_ATTR_PD_MANAGER] = { .name = "pd_manager", .type = BLOBMSG_TYPE_STRING },
85 [IFACE_ATTR_PD_CER] = { .name = "pd_cer", .type = BLOBMSG_TYPE_STRING },
86 [IFACE_ATTR_RA_DEFAULT] = { .name = "ra_default", .type = BLOBMSG_TYPE_INT32 },
87 [IFACE_ATTR_RA_MANAGEMENT] = { .name = "ra_management", .type = BLOBMSG_TYPE_INT32 },
88 [IFACE_ATTR_RA_OFFLINK] = { .name = "ra_offlink", .type = BLOBMSG_TYPE_BOOL },
89 [IFACE_ATTR_RA_PREFERENCE] = { .name = "ra_preference", .type = BLOBMSG_TYPE_STRING },
90 [IFACE_ATTR_RA_ADVROUTER] = { .name = "ra_advrouter", .type = BLOBMSG_TYPE_BOOL },
91 [IFACE_ATTR_RA_MININTERVAL] = { .name = "ra_mininterval", .type = BLOBMSG_TYPE_INT32 },
92 [IFACE_ATTR_RA_MAXINTERVAL] = { .name = "ra_maxinterval", .type = BLOBMSG_TYPE_INT32 },
93 [IFACE_ATTR_RA_LIFETIME] = { .name = "ra_lifetime", .type = BLOBMSG_TYPE_INT32 },
94 [IFACE_ATTR_RA_USELEASETIME] = { .name = "ra_useleasetime", .type = BLOBMSG_TYPE_BOOL },
95 [IFACE_ATTR_RA_REACHABLETIME] = { .name = "ra_reachabletime", .type = BLOBMSG_TYPE_INT32 },
96 [IFACE_ATTR_RA_RETRANSTIME] = { .name = "ra_retranstime", .type = BLOBMSG_TYPE_INT32 },
97 [IFACE_ATTR_RA_HOPLIMIT] = { .name = "ra_hoplimit", .type = BLOBMSG_TYPE_INT32 },
98 [IFACE_ATTR_RA_MTU] = { .name = "ra_mtu", .type = BLOBMSG_TYPE_INT32 },
99 [IFACE_ATTR_NDPROXY_ROUTING] = { .name = "ndproxy_routing", .type = BLOBMSG_TYPE_BOOL },
100 [IFACE_ATTR_NDPROXY_SLAVE] = { .name = "ndproxy_slave", .type = BLOBMSG_TYPE_BOOL },
103 static const struct uci_blob_param_info iface_attr_info[IFACE_ATTR_MAX] = {
104 [IFACE_ATTR_UPSTREAM] = { .type = BLOBMSG_TYPE_STRING },
105 [IFACE_ATTR_DNS] = { .type = BLOBMSG_TYPE_STRING },
106 [IFACE_ATTR_DOMAIN] = { .type = BLOBMSG_TYPE_STRING },
109 const struct uci_blob_param_list interface_attr_list = {
110 .n_params = IFACE_ATTR_MAX,
111 .params = iface_attrs,
112 .info = iface_attr_info,
120 LEASE_ATTR_LEASETIME,
125 static const struct blobmsg_policy lease_attrs[LEASE_ATTR_MAX] = {
126 [LEASE_ATTR_IP] = { .name = "ip", .type = BLOBMSG_TYPE_STRING },
127 [LEASE_ATTR_MAC] = { .name = "mac", .type = BLOBMSG_TYPE_STRING },
128 [LEASE_ATTR_DUID] = { .name = "duid", .type = BLOBMSG_TYPE_STRING },
129 [LEASE_ATTR_HOSTID] = { .name = "hostid", .type = BLOBMSG_TYPE_STRING },
130 [LEASE_ATTR_LEASETIME] = { .name = "leasetime", .type = BLOBMSG_TYPE_STRING },
131 [LEASE_ATTR_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
134 const struct uci_blob_param_list lease_attr_list = {
135 .n_params = LEASE_ATTR_MAX,
136 .params = lease_attrs,
141 ODHCPD_ATTR_MAINDHCP,
142 ODHCPD_ATTR_LEASEFILE,
143 ODHCPD_ATTR_LEASETRIGGER,
144 ODHCPD_ATTR_LOGLEVEL,
148 static const struct blobmsg_policy odhcpd_attrs[LEASE_ATTR_MAX] = {
149 [ODHCPD_ATTR_LEGACY] = { .name = "legacy", .type = BLOBMSG_TYPE_BOOL },
150 [ODHCPD_ATTR_MAINDHCP] = { .name = "maindhcp", .type = BLOBMSG_TYPE_BOOL },
151 [ODHCPD_ATTR_LEASEFILE] = { .name = "leasefile", .type = BLOBMSG_TYPE_STRING },
152 [ODHCPD_ATTR_LEASETRIGGER] = { .name = "leasetrigger", .type = BLOBMSG_TYPE_STRING },
153 [ODHCPD_ATTR_LOGLEVEL] = { .name = "loglevel", .type = BLOBMSG_TYPE_INT32 },
156 const struct uci_blob_param_list odhcpd_attr_list = {
157 .n_params = ODHCPD_ATTR_MAX,
158 .params = odhcpd_attrs,
161 static int mkdir_p(char *dir, mode_t mask)
163 char *l = strrchr(dir, '/');
171 if (mkdir_p(dir, mask))
176 ret = mkdir(dir, mask);
177 if (ret && errno == EEXIST)
181 syslog(LOG_ERR, "mkdir(%s, %d) failed: %s\n", dir, mask, strerror(errno));
186 static void free_lease(struct lease *l)
195 static struct interface* get_interface(const char *name)
198 list_for_each_entry(c, &interfaces, head)
199 if (!strcmp(c->name, name))
204 static void set_interface_defaults(struct interface *iface)
207 iface->learn_routes = 1;
208 iface->dhcpv4_leasetime = 43200;
209 iface->ra_maxinterval = 600;
210 iface->ra_mininterval = iface->ra_maxinterval/3;
211 iface->ra_lifetime = -1;
214 static void clean_interface(struct interface *iface)
218 free(iface->upstream);
219 free(iface->dhcpv4_router);
220 free(iface->dhcpv4_dns);
221 free(iface->dhcpv6_raw);
222 free(iface->filter_class);
223 memset(&iface->ra, 0, sizeof(*iface) - offsetof(struct interface, ra));
224 set_interface_defaults(iface);
227 static void close_interface(struct interface *iface)
229 if (iface->head.next)
230 list_del(&iface->head);
232 setup_router_interface(iface, false);
233 setup_dhcpv6_interface(iface, false);
234 setup_ndp_interface(iface, false);
235 setup_dhcpv4_interface(iface, false);
237 clean_interface(iface);
241 static int parse_mode(const char *mode)
243 if (!strcmp(mode, "disabled"))
244 return RELAYD_DISABLED;
245 else if (!strcmp(mode, "server"))
246 return RELAYD_SERVER;
247 else if (!strcmp(mode, "relay"))
249 else if (!strcmp(mode, "hybrid"))
250 return RELAYD_HYBRID;
255 static void set_config(struct uci_section *s)
257 struct blob_attr *tb[ODHCPD_ATTR_MAX], *c;
259 blob_buf_init(&b, 0);
260 uci_to_blob(&b, s, &odhcpd_attr_list);
261 blobmsg_parse(odhcpd_attrs, ODHCPD_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
263 if ((c = tb[ODHCPD_ATTR_LEGACY]))
264 config.legacy = blobmsg_get_bool(c);
266 if ((c = tb[ODHCPD_ATTR_MAINDHCP]))
267 config.main_dhcpv4 = blobmsg_get_bool(c);
269 if ((c = tb[ODHCPD_ATTR_LEASEFILE])) {
270 free(config.dhcp_statefile);
271 config.dhcp_statefile = strdup(blobmsg_get_string(c));
274 if ((c = tb[ODHCPD_ATTR_LEASETRIGGER])) {
275 free(config.dhcp_cb);
276 config.dhcp_cb = strdup(blobmsg_get_string(c));
279 if ((c = tb[ODHCPD_ATTR_LOGLEVEL])) {
280 int log_level = (blobmsg_get_u32(c) & LOG_PRIMASK);
282 if (config.log_level != log_level) {
283 config.log_level = log_level;
284 setlogmask(LOG_UPTO(config.log_level));
289 static double parse_leasetime(struct blob_attr *c) {
290 char *val = blobmsg_get_string(c), *endptr = NULL;
291 double time = strcmp(val, "infinite") ? strtod(val, &endptr) : UINT32_MAX;
293 if (time && endptr && endptr[0]) {
294 if (endptr[0] == 's')
296 else if (endptr[0] == 'm')
298 else if (endptr[0] == 'h')
300 else if (endptr[0] == 'd')
302 else if (endptr[0] == 'w')
303 time *= 7 * 24 * 3600;
317 static int set_lease(struct uci_section *s)
319 struct blob_attr *tb[LEASE_ATTR_MAX], *c;
321 blob_buf_init(&b, 0);
322 uci_to_blob(&b, s, &lease_attr_list);
323 blobmsg_parse(lease_attrs, LEASE_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
326 if ((c = tb[LEASE_ATTR_NAME]))
327 hostlen = blobmsg_data_len(c);
329 struct lease *lease = calloc(1, sizeof(*lease) + hostlen);
334 memcpy(lease->hostname, blobmsg_get_string(c), hostlen);
336 if ((c = tb[LEASE_ATTR_IP]))
337 if (inet_pton(AF_INET, blobmsg_get_string(c), &lease->ipaddr) < 0)
340 if ((c = tb[LEASE_ATTR_MAC]))
341 if (!ether_aton_r(blobmsg_get_string(c), &lease->mac))
344 if ((c = tb[LEASE_ATTR_DUID])) {
345 size_t duidlen = (blobmsg_data_len(c) - 1) / 2;
346 lease->duid = malloc(duidlen);
350 ssize_t len = odhcpd_unhexlify(lease->duid,
351 duidlen, blobmsg_get_string(c));
356 lease->duid_len = len;
359 if ((c = tb[LEASE_ATTR_HOSTID])) {
361 lease->hostid = strtoul(blobmsg_get_string(c), NULL, 16);
366 if ((c = tb[LEASE_ATTR_LEASETIME])) {
367 double time = parse_leasetime(c);
371 lease->dhcpv4_leasetime = time;
374 list_add(&lease->head, &leases);
384 int config_parse_interface(void *data, size_t len, const char *name, bool overwrite)
386 struct blob_attr *tb[IFACE_ATTR_MAX], *c;
387 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb, data, len);
389 if (tb[IFACE_ATTR_INTERFACE])
390 name = blobmsg_get_string(tb[IFACE_ATTR_INTERFACE]);
395 struct interface *iface = get_interface(name);
397 iface = calloc(1, sizeof(*iface));
401 strncpy(iface->name, name, sizeof(iface->name) - 1);
403 set_interface_defaults(iface);
405 list_add(&iface->head, &interfaces);
409 const char *ifname = NULL;
411 if ((c = tb[IFACE_ATTR_IFNAME]))
412 ifname = blobmsg_get_string(c);
413 else if ((c = tb[IFACE_ATTR_NETWORKID]))
414 ifname = blobmsg_get_string(c);
418 if (overwrite || !iface->ifname[0])
419 ifname = ubus_get_ifname(name);
422 if (!iface->ifname[0] && !ifname)
426 strncpy(iface->ifname, ifname, sizeof(iface->ifname) - 1);
428 if ((iface->ifindex = if_nametoindex(iface->ifname)) <= 0)
433 if ((c = tb[IFACE_ATTR_DYNAMICDHCP]))
434 iface->no_dynamic_dhcp = !blobmsg_get_bool(c);
436 if (overwrite && (c = tb[IFACE_ATTR_IGNORE]))
437 iface->ignore = blobmsg_get_bool(c);
439 if ((c = tb[IFACE_ATTR_LEASETIME])) {
440 double time = parse_leasetime(c);
444 iface->dhcpv4_leasetime = time;
447 if ((c = tb[IFACE_ATTR_START])) {
448 iface->dhcpv4_start.s_addr = htonl(blobmsg_get_u32(c));
450 if (config.main_dhcpv4 && config.legacy)
451 iface->dhcpv4 = RELAYD_SERVER;
454 if ((c = tb[IFACE_ATTR_LIMIT]))
455 iface->dhcpv4_end.s_addr = htonl(
456 ntohl(iface->dhcpv4_start.s_addr) + blobmsg_get_u32(c));
458 if ((c = tb[IFACE_ATTR_MASTER]))
459 iface->master = blobmsg_get_bool(c);
461 if (overwrite && (c = tb[IFACE_ATTR_UPSTREAM])) {
462 struct blob_attr *cur;
465 blobmsg_for_each_attr(cur, c, rem) {
466 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
469 iface->upstream = realloc(iface->upstream,
470 iface->upstream_len + blobmsg_data_len(cur));
471 if (!iface->upstream)
474 memcpy(iface->upstream + iface->upstream_len, blobmsg_get_string(cur), blobmsg_data_len(cur));
475 iface->upstream_len += blobmsg_data_len(cur);
480 if ((c = tb[IFACE_ATTR_RA])) {
481 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
487 if ((c = tb[IFACE_ATTR_DHCPV4])) {
488 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0) {
489 if (config.main_dhcpv4)
490 iface->dhcpv4 = mode;
496 if ((c = tb[IFACE_ATTR_DHCPV6])) {
497 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
498 iface->dhcpv6 = mode;
503 if ((c = tb[IFACE_ATTR_NDP])) {
504 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
510 if ((c = tb[IFACE_ATTR_ROUTER])) {
511 struct blob_attr *cur;
514 blobmsg_for_each_attr(cur, c, rem) {
515 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
518 struct in_addr addr4;
519 if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
520 iface->dhcpv4_router = realloc(iface->dhcpv4_router,
521 (++iface->dhcpv4_router_cnt) * sizeof(*iface->dhcpv4_router));
522 if (!iface->dhcpv4_router)
525 iface->dhcpv4_router[iface->dhcpv4_router_cnt - 1] = addr4;
531 if ((c = tb[IFACE_ATTR_DNS])) {
532 struct blob_attr *cur;
535 iface->always_rewrite_dns = true;
536 blobmsg_for_each_attr(cur, c, rem) {
537 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
540 struct in_addr addr4;
541 struct in6_addr addr6;
542 if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
543 iface->dhcpv4_dns = realloc(iface->dhcpv4_dns,
544 (++iface->dhcpv4_dns_cnt) * sizeof(*iface->dhcpv4_dns));
545 if (!iface->dhcpv4_dns)
548 iface->dhcpv4_dns[iface->dhcpv4_dns_cnt - 1] = addr4;
549 } else if (inet_pton(AF_INET6, blobmsg_get_string(cur), &addr6) == 1) {
550 iface->dns = realloc(iface->dns,
551 (++iface->dns_cnt) * sizeof(*iface->dns));
555 iface->dns[iface->dns_cnt - 1] = addr6;
561 if ((c = tb[IFACE_ATTR_DOMAIN])) {
562 struct blob_attr *cur;
565 blobmsg_for_each_attr(cur, c, rem) {
566 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
570 char *domain = blobmsg_get_string(cur);
571 size_t domainlen = strlen(domain);
572 if (domainlen > 0 && domain[domainlen - 1] == '.')
573 domain[domainlen - 1] = 0;
575 int len = dn_comp(domain, buf, sizeof(buf), NULL, NULL);
579 iface->search = realloc(iface->search, iface->search_len + len);
583 memcpy(&iface->search[iface->search_len], buf, len);
584 iface->search_len += len;
588 if ((c = tb[IFACE_ATTR_FILTER_CLASS])) {
589 iface->filter_class = realloc(iface->filter_class, blobmsg_data_len(c) + 1);
590 memcpy(iface->filter_class, blobmsg_get_string(c), blobmsg_data_len(c) + 1);
593 if ((c = tb[IFACE_ATTR_DHCPV6_RAW])) {
594 iface->dhcpv6_raw_len = blobmsg_data_len(c) / 2;
595 iface->dhcpv6_raw = realloc(iface->dhcpv6_raw, iface->dhcpv6_raw_len);
596 odhcpd_unhexlify(iface->dhcpv6_raw, iface->dhcpv6_raw_len, blobmsg_get_string(c));
599 if ((c = tb[IFACE_ATTR_RA_DEFAULT]))
600 iface->default_router = blobmsg_get_u32(c);
602 if ((c = tb[IFACE_ATTR_RA_MANAGEMENT]))
603 iface->managed = blobmsg_get_u32(c);
605 if ((c = tb[IFACE_ATTR_RA_REACHABLETIME])) {
606 iface->ra_reachabletime = blobmsg_get_u32(c);
607 if (iface->ra_reachabletime > 3600000)
611 if ((c = tb[IFACE_ATTR_RA_RETRANSTIME]))
612 iface->ra_retranstime = blobmsg_get_u32(c);
614 if ((c = tb[IFACE_ATTR_RA_HOPLIMIT])) {
615 iface->ra_hoplimit = blobmsg_get_u32(c);
616 if (iface->ra_hoplimit > 255)
620 if ((c = tb[IFACE_ATTR_RA_MTU])) {
621 iface->ra_mtu = blobmsg_get_u32(c);
622 if (iface->ra_mtu < 1280)
626 if ((c = tb[IFACE_ATTR_RA_OFFLINK]))
627 iface->ra_not_onlink = blobmsg_get_bool(c);
629 if ((c = tb[IFACE_ATTR_RA_ADVROUTER]))
630 iface->ra_advrouter = blobmsg_get_bool(c);
632 if ((c = tb[IFACE_ATTR_RA_MININTERVAL]))
633 iface->ra_mininterval = blobmsg_get_u32(c);
635 if ((c = tb[IFACE_ATTR_RA_MAXINTERVAL]))
636 iface->ra_maxinterval = blobmsg_get_u32(c);
638 if ((c = tb[IFACE_ATTR_RA_LIFETIME]))
639 iface->ra_lifetime = blobmsg_get_u32(c);
641 if ((c = tb[IFACE_ATTR_RA_USELEASETIME]))
642 iface->ra_useleasetime = blobmsg_get_bool(c);
644 if ((c = tb[IFACE_ATTR_RA_PREFERENCE])) {
645 const char *prio = blobmsg_get_string(c);
647 if (!strcmp(prio, "high"))
648 iface->route_preference = 1;
649 else if (!strcmp(prio, "low"))
650 iface->route_preference = -1;
651 else if (!strcmp(prio, "medium") || !strcmp(prio, "default"))
652 iface->route_preference = 0;
657 if ((c = tb[IFACE_ATTR_PD_MANAGER]))
658 strncpy(iface->dhcpv6_pd_manager, blobmsg_get_string(c),
659 sizeof(iface->dhcpv6_pd_manager) - 1);
661 if ((c = tb[IFACE_ATTR_PD_CER]) &&
662 inet_pton(AF_INET6, blobmsg_get_string(c), &iface->dhcpv6_pd_cer) < 1)
665 if ((c = tb[IFACE_ATTR_NDPROXY_ROUTING]))
666 iface->learn_routes = blobmsg_get_bool(c);
668 if ((c = tb[IFACE_ATTR_NDPROXY_SLAVE]))
669 iface->external = blobmsg_get_bool(c);
674 close_interface(iface);
678 static int set_interface(struct uci_section *s)
680 blob_buf_init(&b, 0);
681 uci_to_blob(&b, s, &interface_attr_list);
683 return config_parse_interface(blob_data(b.head), blob_len(b.head), s->e.name, true);
686 void odhcpd_reload(void)
688 struct uci_context *uci = uci_alloc_context();
690 while (!list_empty(&leases))
691 free_lease(list_first_entry(&leases, struct lease, head));
693 struct interface *master = NULL, *i, *n;
698 list_for_each_entry(i, &interfaces, head)
701 struct uci_package *dhcp = NULL;
702 if (!uci_load(uci, "dhcp", &dhcp)) {
703 struct uci_element *e;
704 uci_foreach_element(&dhcp->sections, e) {
705 struct uci_section *s = uci_to_section(e);
706 if (!strcmp(s->type, "host"))
708 else if (!strcmp(s->type, "odhcpd"))
712 uci_foreach_element(&dhcp->sections, e) {
713 struct uci_section *s = uci_to_section(e);
714 if (!strcmp(s->type, "dhcp"))
719 if (config.dhcp_statefile) {
720 char *path = strdup(config.dhcp_statefile);
722 mkdir_p(dirname(path), 0755);
727 ubus_apply_network();
730 bool any_dhcpv6_slave = false, any_ra_slave = false, any_ndp_slave = false;
733 list_for_each_entry(i, &interfaces, head) {
737 if (i->dhcpv6 == RELAYD_HYBRID || i->dhcpv6 == RELAYD_RELAY)
738 any_dhcpv6_slave = true;
740 if (i->ra == RELAYD_HYBRID || i->ra == RELAYD_RELAY)
743 if (i->ndp == RELAYD_HYBRID || i->ndp == RELAYD_RELAY)
744 any_ndp_slave = true;
747 /* Evaluate hybrid mode for master */
748 list_for_each_entry(i, &interfaces, head) {
752 enum odhcpd_mode hybrid_mode = RELAYD_DISABLED;
754 if (!ubus_has_prefix(i->name, i->ifname))
755 hybrid_mode = RELAYD_RELAY;
758 if (i->dhcpv6 == RELAYD_HYBRID)
759 i->dhcpv6 = hybrid_mode;
761 if (i->dhcpv6 == RELAYD_RELAY && !any_dhcpv6_slave)
762 i->dhcpv6 = RELAYD_DISABLED;
764 if (i->ra == RELAYD_HYBRID)
767 if (i->ra == RELAYD_RELAY && !any_ra_slave)
768 i->ra = RELAYD_DISABLED;
770 if (i->ndp == RELAYD_HYBRID)
771 i->ndp = hybrid_mode;
773 if (i->ndp == RELAYD_RELAY && !any_ndp_slave)
774 i->ndp = RELAYD_DISABLED;
776 if (i->dhcpv6 == RELAYD_RELAY || i->ra == RELAYD_RELAY || i->ndp == RELAYD_RELAY)
781 list_for_each_entry_safe(i, n, &interfaces, head) {
783 /* Resolve hybrid mode */
784 if (i->dhcpv6 == RELAYD_HYBRID)
785 i->dhcpv6 = (master && master->dhcpv6 == RELAYD_RELAY) ?
786 RELAYD_RELAY : RELAYD_SERVER;
788 if (i->ra == RELAYD_HYBRID)
789 i->ra = (master && master->ra == RELAYD_RELAY) ?
790 RELAYD_RELAY : RELAYD_SERVER;
792 if (i->ndp == RELAYD_HYBRID)
793 i->ndp = (master && master->ndp == RELAYD_RELAY) ?
794 RELAYD_RELAY : RELAYD_DISABLED;
796 setup_router_interface(i, !i->ignore || i->ra != RELAYD_DISABLED);
797 setup_dhcpv6_interface(i, !i->ignore || i->dhcpv6 != RELAYD_DISABLED);
798 setup_ndp_interface(i, !i->ignore || i->ndp != RELAYD_DISABLED);
799 setup_dhcpv4_interface(i, !i->ignore || i->dhcpv4 != RELAYD_DISABLED);
804 ndp_handle_addr6_dump();
805 uci_unload(uci, dhcp);
806 uci_free_context(uci);
809 static void handle_signal(int signal)
813 if (signal == SIGHUP) {
814 if (write(reload_pipe[1], b, sizeof(b)) < 0) {}
819 static void reload_cb(struct uloop_fd *u, _unused unsigned int events)
822 if (read(u->fd, b, sizeof(b)) < 0) {}
827 static struct uloop_fd reload_fd = { .cb = reload_cb };
829 void odhcpd_run(void)
831 if (pipe2(reload_pipe, O_NONBLOCK | O_CLOEXEC) < 0) {}
833 reload_fd.fd = reload_pipe[0];
834 uloop_fd_add(&reload_fd, ULOOP_READ);
836 signal(SIGTERM, handle_signal);
837 signal(SIGINT, handle_signal);
838 signal(SIGHUP, handle_signal);
848 while (!list_empty(&interfaces))
849 close_interface(list_first_entry(&interfaces, struct interface, head));