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_DHCPV6_ASSIGNALL,
47 IFACE_ATTR_RA_DEFAULT,
48 IFACE_ATTR_RA_MANAGEMENT,
49 IFACE_ATTR_RA_OFFLINK,
50 IFACE_ATTR_RA_PREFERENCE,
51 IFACE_ATTR_RA_ADVROUTER,
52 IFACE_ATTR_RA_MININTERVAL,
53 IFACE_ATTR_RA_MAXINTERVAL,
54 IFACE_ATTR_RA_LIFETIME,
55 IFACE_ATTR_RA_USELEASETIME,
56 IFACE_ATTR_RA_REACHABLETIME,
57 IFACE_ATTR_RA_RETRANSTIME,
58 IFACE_ATTR_RA_HOPLIMIT,
60 IFACE_ATTR_PD_MANAGER,
62 IFACE_ATTR_NDPROXY_ROUTING,
63 IFACE_ATTR_NDPROXY_SLAVE,
67 static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
68 [IFACE_ATTR_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
69 [IFACE_ATTR_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
70 [IFACE_ATTR_NETWORKID] = { .name = "networkid", .type = BLOBMSG_TYPE_STRING },
71 [IFACE_ATTR_DYNAMICDHCP] = { .name = "dynamicdhcp", .type = BLOBMSG_TYPE_BOOL },
72 [IFACE_ATTR_IGNORE] = { .name = "ignore", .type = BLOBMSG_TYPE_BOOL },
73 [IFACE_ATTR_LEASETIME] = { .name = "leasetime", .type = BLOBMSG_TYPE_STRING },
74 [IFACE_ATTR_START] = { .name = "start", .type = BLOBMSG_TYPE_INT32 },
75 [IFACE_ATTR_LIMIT] = { .name = "limit", .type = BLOBMSG_TYPE_INT32 },
76 [IFACE_ATTR_MASTER] = { .name = "master", .type = BLOBMSG_TYPE_BOOL },
77 [IFACE_ATTR_UPSTREAM] = { .name = "upstream", .type = BLOBMSG_TYPE_ARRAY },
78 [IFACE_ATTR_RA] = { .name = "ra", .type = BLOBMSG_TYPE_STRING },
79 [IFACE_ATTR_DHCPV4] = { .name = "dhcpv4", .type = BLOBMSG_TYPE_STRING },
80 [IFACE_ATTR_DHCPV6] = { .name = "dhcpv6", .type = BLOBMSG_TYPE_STRING },
81 [IFACE_ATTR_NDP] = { .name = "ndp", .type = BLOBMSG_TYPE_STRING },
82 [IFACE_ATTR_ROUTER] = { .name = "router", .type = BLOBMSG_TYPE_ARRAY },
83 [IFACE_ATTR_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
84 [IFACE_ATTR_DOMAIN] = { .name = "domain", .type = BLOBMSG_TYPE_ARRAY },
85 [IFACE_ATTR_FILTER_CLASS] = { .name = "filter_class", .type = BLOBMSG_TYPE_STRING },
86 [IFACE_ATTR_DHCPV6_RAW] = { .name = "dhcpv6_raw", .type = BLOBMSG_TYPE_STRING },
87 [IFACE_ATTR_DHCPV6_ASSIGNALL] = { .name ="dhcpv6_assignall", .type = BLOBMSG_TYPE_BOOL },
88 [IFACE_ATTR_PD_MANAGER] = { .name = "pd_manager", .type = BLOBMSG_TYPE_STRING },
89 [IFACE_ATTR_PD_CER] = { .name = "pd_cer", .type = BLOBMSG_TYPE_STRING },
90 [IFACE_ATTR_RA_DEFAULT] = { .name = "ra_default", .type = BLOBMSG_TYPE_INT32 },
91 [IFACE_ATTR_RA_MANAGEMENT] = { .name = "ra_management", .type = BLOBMSG_TYPE_INT32 },
92 [IFACE_ATTR_RA_OFFLINK] = { .name = "ra_offlink", .type = BLOBMSG_TYPE_BOOL },
93 [IFACE_ATTR_RA_PREFERENCE] = { .name = "ra_preference", .type = BLOBMSG_TYPE_STRING },
94 [IFACE_ATTR_RA_ADVROUTER] = { .name = "ra_advrouter", .type = BLOBMSG_TYPE_BOOL },
95 [IFACE_ATTR_RA_MININTERVAL] = { .name = "ra_mininterval", .type = BLOBMSG_TYPE_INT32 },
96 [IFACE_ATTR_RA_MAXINTERVAL] = { .name = "ra_maxinterval", .type = BLOBMSG_TYPE_INT32 },
97 [IFACE_ATTR_RA_LIFETIME] = { .name = "ra_lifetime", .type = BLOBMSG_TYPE_INT32 },
98 [IFACE_ATTR_RA_USELEASETIME] = { .name = "ra_useleasetime", .type = BLOBMSG_TYPE_BOOL },
99 [IFACE_ATTR_RA_REACHABLETIME] = { .name = "ra_reachabletime", .type = BLOBMSG_TYPE_INT32 },
100 [IFACE_ATTR_RA_RETRANSTIME] = { .name = "ra_retranstime", .type = BLOBMSG_TYPE_INT32 },
101 [IFACE_ATTR_RA_HOPLIMIT] = { .name = "ra_hoplimit", .type = BLOBMSG_TYPE_INT32 },
102 [IFACE_ATTR_RA_MTU] = { .name = "ra_mtu", .type = BLOBMSG_TYPE_INT32 },
103 [IFACE_ATTR_NDPROXY_ROUTING] = { .name = "ndproxy_routing", .type = BLOBMSG_TYPE_BOOL },
104 [IFACE_ATTR_NDPROXY_SLAVE] = { .name = "ndproxy_slave", .type = BLOBMSG_TYPE_BOOL },
107 static const struct uci_blob_param_info iface_attr_info[IFACE_ATTR_MAX] = {
108 [IFACE_ATTR_UPSTREAM] = { .type = BLOBMSG_TYPE_STRING },
109 [IFACE_ATTR_DNS] = { .type = BLOBMSG_TYPE_STRING },
110 [IFACE_ATTR_DOMAIN] = { .type = BLOBMSG_TYPE_STRING },
113 const struct uci_blob_param_list interface_attr_list = {
114 .n_params = IFACE_ATTR_MAX,
115 .params = iface_attrs,
116 .info = iface_attr_info,
124 LEASE_ATTR_LEASETIME,
129 static const struct blobmsg_policy lease_attrs[LEASE_ATTR_MAX] = {
130 [LEASE_ATTR_IP] = { .name = "ip", .type = BLOBMSG_TYPE_STRING },
131 [LEASE_ATTR_MAC] = { .name = "mac", .type = BLOBMSG_TYPE_STRING },
132 [LEASE_ATTR_DUID] = { .name = "duid", .type = BLOBMSG_TYPE_STRING },
133 [LEASE_ATTR_HOSTID] = { .name = "hostid", .type = BLOBMSG_TYPE_STRING },
134 [LEASE_ATTR_LEASETIME] = { .name = "leasetime", .type = BLOBMSG_TYPE_STRING },
135 [LEASE_ATTR_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
138 const struct uci_blob_param_list lease_attr_list = {
139 .n_params = LEASE_ATTR_MAX,
140 .params = lease_attrs,
145 ODHCPD_ATTR_MAINDHCP,
146 ODHCPD_ATTR_LEASEFILE,
147 ODHCPD_ATTR_LEASETRIGGER,
148 ODHCPD_ATTR_LOGLEVEL,
152 static const struct blobmsg_policy odhcpd_attrs[LEASE_ATTR_MAX] = {
153 [ODHCPD_ATTR_LEGACY] = { .name = "legacy", .type = BLOBMSG_TYPE_BOOL },
154 [ODHCPD_ATTR_MAINDHCP] = { .name = "maindhcp", .type = BLOBMSG_TYPE_BOOL },
155 [ODHCPD_ATTR_LEASEFILE] = { .name = "leasefile", .type = BLOBMSG_TYPE_STRING },
156 [ODHCPD_ATTR_LEASETRIGGER] = { .name = "leasetrigger", .type = BLOBMSG_TYPE_STRING },
157 [ODHCPD_ATTR_LOGLEVEL] = { .name = "loglevel", .type = BLOBMSG_TYPE_INT32 },
160 const struct uci_blob_param_list odhcpd_attr_list = {
161 .n_params = ODHCPD_ATTR_MAX,
162 .params = odhcpd_attrs,
165 static int mkdir_p(char *dir, mode_t mask)
167 char *l = strrchr(dir, '/');
175 if (mkdir_p(dir, mask))
180 ret = mkdir(dir, mask);
181 if (ret && errno == EEXIST)
185 syslog(LOG_ERR, "mkdir(%s, %d) failed: %s\n", dir, mask, strerror(errno));
190 static void free_lease(struct lease *l)
199 static struct interface* get_interface(const char *name)
202 list_for_each_entry(c, &interfaces, head)
203 if (!strcmp(c->name, name))
208 static void set_interface_defaults(struct interface *iface)
210 iface->learn_routes = 1;
211 iface->dhcpv4_leasetime = 43200;
212 iface->dhcpv6_assignall = true;
213 iface->ra_managed = RA_MANAGED_MFLAG;
214 iface->ra_maxinterval = 600;
215 iface->ra_mininterval = iface->ra_maxinterval/3;
216 iface->ra_lifetime = -1;
219 static void clean_interface(struct interface *iface)
223 free(iface->upstream);
224 free(iface->dhcpv4_router);
225 free(iface->dhcpv4_dns);
226 free(iface->dhcpv6_raw);
227 free(iface->filter_class);
228 memset(&iface->ra, 0, sizeof(*iface) - offsetof(struct interface, ra));
229 set_interface_defaults(iface);
232 static void close_interface(struct interface *iface)
234 if (iface->head.next)
235 list_del(&iface->head);
237 setup_router_interface(iface, false);
238 setup_dhcpv6_interface(iface, false);
239 setup_ndp_interface(iface, false);
240 setup_dhcpv4_interface(iface, false);
242 clean_interface(iface);
244 free(iface->ia_addr);
249 static int parse_mode(const char *mode)
251 if (!strcmp(mode, "disabled"))
252 return MODE_DISABLED;
253 else if (!strcmp(mode, "server"))
255 else if (!strcmp(mode, "relay"))
257 else if (!strcmp(mode, "hybrid"))
263 static void set_config(struct uci_section *s)
265 struct blob_attr *tb[ODHCPD_ATTR_MAX], *c;
267 blob_buf_init(&b, 0);
268 uci_to_blob(&b, s, &odhcpd_attr_list);
269 blobmsg_parse(odhcpd_attrs, ODHCPD_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
271 if ((c = tb[ODHCPD_ATTR_LEGACY]))
272 config.legacy = blobmsg_get_bool(c);
274 if ((c = tb[ODHCPD_ATTR_MAINDHCP]))
275 config.main_dhcpv4 = blobmsg_get_bool(c);
277 if ((c = tb[ODHCPD_ATTR_LEASEFILE])) {
278 free(config.dhcp_statefile);
279 config.dhcp_statefile = strdup(blobmsg_get_string(c));
282 if ((c = tb[ODHCPD_ATTR_LEASETRIGGER])) {
283 free(config.dhcp_cb);
284 config.dhcp_cb = strdup(blobmsg_get_string(c));
287 if ((c = tb[ODHCPD_ATTR_LOGLEVEL])) {
288 int log_level = (blobmsg_get_u32(c) & LOG_PRIMASK);
290 if (config.log_level != log_level) {
291 config.log_level = log_level;
292 setlogmask(LOG_UPTO(config.log_level));
297 static double parse_leasetime(struct blob_attr *c) {
298 char *val = blobmsg_get_string(c), *endptr = NULL;
299 double time = strcmp(val, "infinite") ? strtod(val, &endptr) : UINT32_MAX;
301 if (time && endptr && endptr[0]) {
302 if (endptr[0] == 's')
304 else if (endptr[0] == 'm')
306 else if (endptr[0] == 'h')
308 else if (endptr[0] == 'd')
310 else if (endptr[0] == 'w')
311 time *= 7 * 24 * 3600;
325 static int set_lease(struct uci_section *s)
327 struct blob_attr *tb[LEASE_ATTR_MAX], *c;
329 blob_buf_init(&b, 0);
330 uci_to_blob(&b, s, &lease_attr_list);
331 blobmsg_parse(lease_attrs, LEASE_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
334 if ((c = tb[LEASE_ATTR_NAME]))
335 hostlen = blobmsg_data_len(c);
337 struct lease *lease = calloc(1, sizeof(*lease) + hostlen);
342 memcpy(lease->hostname, blobmsg_get_string(c), hostlen);
344 if ((c = tb[LEASE_ATTR_IP]))
345 if (inet_pton(AF_INET, blobmsg_get_string(c), &lease->ipaddr) < 0)
348 if ((c = tb[LEASE_ATTR_MAC]))
349 if (!ether_aton_r(blobmsg_get_string(c), &lease->mac))
352 if ((c = tb[LEASE_ATTR_DUID])) {
353 size_t duidlen = (blobmsg_data_len(c) - 1) / 2;
354 lease->duid = malloc(duidlen);
358 ssize_t len = odhcpd_unhexlify(lease->duid,
359 duidlen, blobmsg_get_string(c));
364 lease->duid_len = len;
367 if ((c = tb[LEASE_ATTR_HOSTID])) {
369 lease->hostid = strtoul(blobmsg_get_string(c), NULL, 16);
374 if ((c = tb[LEASE_ATTR_LEASETIME])) {
375 double time = parse_leasetime(c);
379 lease->dhcpv4_leasetime = time;
382 list_add(&lease->head, &leases);
392 int config_parse_interface(void *data, size_t len, const char *name, bool overwrite)
394 struct blob_attr *tb[IFACE_ATTR_MAX], *c;
395 bool get_addrs = false;
397 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb, data, len);
399 if (tb[IFACE_ATTR_INTERFACE])
400 name = blobmsg_get_string(tb[IFACE_ATTR_INTERFACE]);
405 struct interface *iface = get_interface(name);
409 iface = calloc_a(sizeof(*iface), &iface_name, strlen(name) + 1);
413 iface->name = strcpy(iface_name, name);
415 set_interface_defaults(iface);
417 list_add(&iface->head, &interfaces);
418 get_addrs = overwrite = true;
421 const char *ifname = NULL;
423 if ((c = tb[IFACE_ATTR_IFNAME]))
424 ifname = blobmsg_get_string(c);
425 else if ((c = tb[IFACE_ATTR_NETWORKID]))
426 ifname = blobmsg_get_string(c);
430 if (overwrite || !iface->ifname)
431 ifname = ubus_get_ifname(name);
434 if (!iface->ifname && !ifname)
439 iface->ifname = strdup(ifname);
445 if ((iface->ifindex = if_nametoindex(iface->ifname)) <= 0)
449 ssize_t len = odhcpd_get_interface_addresses(iface->ifindex,
450 true, &iface->ia_addr);
453 iface->ia_addr_len = len;
455 len = odhcpd_get_interface_addresses(iface->ifindex,
456 false, &iface->addr4);
458 iface->addr4_len = len;
463 if ((c = tb[IFACE_ATTR_DYNAMICDHCP]))
464 iface->no_dynamic_dhcp = !blobmsg_get_bool(c);
466 if (overwrite && (c = tb[IFACE_ATTR_IGNORE]))
467 iface->ignore = blobmsg_get_bool(c);
469 if ((c = tb[IFACE_ATTR_LEASETIME])) {
470 double time = parse_leasetime(c);
474 iface->dhcpv4_leasetime = time;
477 if ((c = tb[IFACE_ATTR_START])) {
478 iface->dhcpv4_start.s_addr = htonl(blobmsg_get_u32(c));
480 if (config.main_dhcpv4 && config.legacy)
481 iface->dhcpv4 = MODE_SERVER;
484 if ((c = tb[IFACE_ATTR_LIMIT]))
485 iface->dhcpv4_end.s_addr = htonl(
486 ntohl(iface->dhcpv4_start.s_addr) + blobmsg_get_u32(c));
488 if ((c = tb[IFACE_ATTR_MASTER]))
489 iface->master = blobmsg_get_bool(c);
491 if (overwrite && (c = tb[IFACE_ATTR_UPSTREAM])) {
492 struct blob_attr *cur;
495 blobmsg_for_each_attr(cur, c, rem) {
496 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
499 iface->upstream = realloc(iface->upstream,
500 iface->upstream_len + blobmsg_data_len(cur));
501 if (!iface->upstream)
504 memcpy(iface->upstream + iface->upstream_len, blobmsg_get_string(cur), blobmsg_data_len(cur));
505 iface->upstream_len += blobmsg_data_len(cur);
510 if ((c = tb[IFACE_ATTR_RA])) {
511 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
517 if ((c = tb[IFACE_ATTR_DHCPV4])) {
518 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0) {
519 if (config.main_dhcpv4)
520 iface->dhcpv4 = mode;
526 if ((c = tb[IFACE_ATTR_DHCPV6])) {
527 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
528 iface->dhcpv6 = mode;
533 if ((c = tb[IFACE_ATTR_NDP])) {
534 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
540 if ((c = tb[IFACE_ATTR_ROUTER])) {
541 struct blob_attr *cur;
544 blobmsg_for_each_attr(cur, c, rem) {
545 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
548 struct in_addr addr4;
549 if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
550 iface->dhcpv4_router = realloc(iface->dhcpv4_router,
551 (++iface->dhcpv4_router_cnt) * sizeof(*iface->dhcpv4_router));
552 if (!iface->dhcpv4_router)
555 iface->dhcpv4_router[iface->dhcpv4_router_cnt - 1] = addr4;
561 if ((c = tb[IFACE_ATTR_DNS])) {
562 struct blob_attr *cur;
565 iface->always_rewrite_dns = true;
566 blobmsg_for_each_attr(cur, c, rem) {
567 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
570 struct in_addr addr4;
571 struct in6_addr addr6;
572 if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
573 iface->dhcpv4_dns = realloc(iface->dhcpv4_dns,
574 (++iface->dhcpv4_dns_cnt) * sizeof(*iface->dhcpv4_dns));
575 if (!iface->dhcpv4_dns)
578 iface->dhcpv4_dns[iface->dhcpv4_dns_cnt - 1] = addr4;
579 } else if (inet_pton(AF_INET6, blobmsg_get_string(cur), &addr6) == 1) {
580 iface->dns = realloc(iface->dns,
581 (++iface->dns_cnt) * sizeof(*iface->dns));
585 iface->dns[iface->dns_cnt - 1] = addr6;
591 if ((c = tb[IFACE_ATTR_DOMAIN])) {
592 struct blob_attr *cur;
595 blobmsg_for_each_attr(cur, c, rem) {
596 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
600 char *domain = blobmsg_get_string(cur);
601 size_t domainlen = strlen(domain);
602 if (domainlen > 0 && domain[domainlen - 1] == '.')
603 domain[domainlen - 1] = 0;
605 int len = dn_comp(domain, buf, sizeof(buf), NULL, NULL);
609 iface->search = realloc(iface->search, iface->search_len + len);
613 memcpy(&iface->search[iface->search_len], buf, len);
614 iface->search_len += len;
618 if ((c = tb[IFACE_ATTR_FILTER_CLASS])) {
619 iface->filter_class = realloc(iface->filter_class, blobmsg_data_len(c) + 1);
620 memcpy(iface->filter_class, blobmsg_get_string(c), blobmsg_data_len(c) + 1);
623 if ((c = tb[IFACE_ATTR_DHCPV6_RAW])) {
624 iface->dhcpv6_raw_len = blobmsg_data_len(c) / 2;
625 iface->dhcpv6_raw = realloc(iface->dhcpv6_raw, iface->dhcpv6_raw_len);
626 odhcpd_unhexlify(iface->dhcpv6_raw, iface->dhcpv6_raw_len, blobmsg_get_string(c));
629 if ((c = tb[IFACE_ATTR_DHCPV6_ASSIGNALL]))
630 iface->dhcpv6_assignall = blobmsg_get_bool(c);
632 if ((c = tb[IFACE_ATTR_RA_DEFAULT]))
633 iface->default_router = blobmsg_get_u32(c);
635 if ((c = tb[IFACE_ATTR_RA_MANAGEMENT]))
636 iface->ra_managed = blobmsg_get_u32(c);
638 if ((c = tb[IFACE_ATTR_RA_REACHABLETIME])) {
639 uint32_t ra_reachabletime = blobmsg_get_u32(c);
640 if (ra_reachabletime > 3600000)
643 iface->ra_reachabletime = ra_reachabletime;
646 if ((c = tb[IFACE_ATTR_RA_RETRANSTIME])) {
647 uint32_t ra_retranstime = blobmsg_get_u32(c);
648 if (ra_retranstime > 60000)
651 iface->ra_retranstime = ra_retranstime;
654 if ((c = tb[IFACE_ATTR_RA_HOPLIMIT])) {
655 uint32_t ra_hoplimit = blobmsg_get_u32(c);
656 if (ra_hoplimit > 255)
659 iface->ra_hoplimit = ra_hoplimit;
662 if ((c = tb[IFACE_ATTR_RA_MTU])) {
663 uint32_t ra_mtu = blobmsg_get_u32(c);
664 if (ra_mtu < 1280 || ra_mtu > 65535)
667 iface->ra_mtu = ra_mtu;
670 if ((c = tb[IFACE_ATTR_RA_OFFLINK]))
671 iface->ra_not_onlink = blobmsg_get_bool(c);
673 if ((c = tb[IFACE_ATTR_RA_ADVROUTER]))
674 iface->ra_advrouter = blobmsg_get_bool(c);
676 if ((c = tb[IFACE_ATTR_RA_MININTERVAL]))
677 iface->ra_mininterval = blobmsg_get_u32(c);
679 if ((c = tb[IFACE_ATTR_RA_MAXINTERVAL]))
680 iface->ra_maxinterval = blobmsg_get_u32(c);
682 if ((c = tb[IFACE_ATTR_RA_LIFETIME]))
683 iface->ra_lifetime = blobmsg_get_u32(c);
685 if ((c = tb[IFACE_ATTR_RA_USELEASETIME]))
686 iface->ra_useleasetime = blobmsg_get_bool(c);
688 if ((c = tb[IFACE_ATTR_RA_PREFERENCE])) {
689 const char *prio = blobmsg_get_string(c);
691 if (!strcmp(prio, "high"))
692 iface->route_preference = 1;
693 else if (!strcmp(prio, "low"))
694 iface->route_preference = -1;
695 else if (!strcmp(prio, "medium") || !strcmp(prio, "default"))
696 iface->route_preference = 0;
701 if ((c = tb[IFACE_ATTR_PD_MANAGER]))
702 strncpy(iface->dhcpv6_pd_manager, blobmsg_get_string(c),
703 sizeof(iface->dhcpv6_pd_manager) - 1);
705 if ((c = tb[IFACE_ATTR_PD_CER]) &&
706 inet_pton(AF_INET6, blobmsg_get_string(c), &iface->dhcpv6_pd_cer) < 1)
709 if ((c = tb[IFACE_ATTR_NDPROXY_ROUTING]))
710 iface->learn_routes = blobmsg_get_bool(c);
712 if ((c = tb[IFACE_ATTR_NDPROXY_SLAVE]))
713 iface->external = blobmsg_get_bool(c);
718 close_interface(iface);
722 static int set_interface(struct uci_section *s)
724 blob_buf_init(&b, 0);
725 uci_to_blob(&b, s, &interface_attr_list);
727 return config_parse_interface(blob_data(b.head), blob_len(b.head), s->e.name, true);
730 void odhcpd_reload(void)
732 struct uci_context *uci = uci_alloc_context();
734 while (!list_empty(&leases))
735 free_lease(list_first_entry(&leases, struct lease, head));
737 struct interface *master = NULL, *i, *n;
742 list_for_each_entry(i, &interfaces, head)
745 struct uci_package *dhcp = NULL;
746 if (!uci_load(uci, "dhcp", &dhcp)) {
747 struct uci_element *e;
748 uci_foreach_element(&dhcp->sections, e) {
749 struct uci_section *s = uci_to_section(e);
750 if (!strcmp(s->type, "host"))
752 else if (!strcmp(s->type, "odhcpd"))
756 uci_foreach_element(&dhcp->sections, e) {
757 struct uci_section *s = uci_to_section(e);
758 if (!strcmp(s->type, "dhcp"))
763 if (config.dhcp_statefile) {
764 char *path = strdup(config.dhcp_statefile);
766 mkdir_p(dirname(path), 0755);
771 ubus_apply_network();
774 bool any_dhcpv6_slave = false, any_ra_slave = false, any_ndp_slave = false;
777 list_for_each_entry(i, &interfaces, head) {
781 if (i->dhcpv6 == MODE_HYBRID || i->dhcpv6 == MODE_RELAY)
782 any_dhcpv6_slave = true;
784 if (i->ra == MODE_HYBRID || i->ra == MODE_RELAY)
787 if (i->ndp == MODE_HYBRID || i->ndp == MODE_RELAY)
788 any_ndp_slave = true;
791 /* Evaluate hybrid mode for master */
792 list_for_each_entry(i, &interfaces, head) {
796 enum odhcpd_mode hybrid_mode = MODE_DISABLED;
798 if (!ubus_has_prefix(i->name, i->ifname))
799 hybrid_mode = MODE_RELAY;
802 if (i->dhcpv6 == MODE_HYBRID)
803 i->dhcpv6 = hybrid_mode;
805 if (i->dhcpv6 == MODE_RELAY && !any_dhcpv6_slave)
806 i->dhcpv6 = MODE_DISABLED;
808 if (i->ra == MODE_HYBRID)
811 if (i->ra == MODE_RELAY && !any_ra_slave)
812 i->ra = MODE_DISABLED;
814 if (i->ndp == MODE_HYBRID)
815 i->ndp = hybrid_mode;
817 if (i->ndp == MODE_RELAY && !any_ndp_slave)
818 i->ndp = MODE_DISABLED;
820 if (i->dhcpv6 == MODE_RELAY || i->ra == MODE_RELAY || i->ndp == MODE_RELAY)
825 list_for_each_entry_safe(i, n, &interfaces, head) {
827 /* Resolve hybrid mode */
828 if (i->dhcpv6 == MODE_HYBRID)
829 i->dhcpv6 = (master && master->dhcpv6 == MODE_RELAY) ?
830 MODE_RELAY : MODE_SERVER;
832 if (i->ra == MODE_HYBRID)
833 i->ra = (master && master->ra == MODE_RELAY) ?
834 MODE_RELAY : MODE_SERVER;
836 if (i->ndp == MODE_HYBRID)
837 i->ndp = (master && master->ndp == MODE_RELAY) ?
838 MODE_RELAY : MODE_DISABLED;
840 setup_router_interface(i, !i->ignore || i->ra != MODE_DISABLED);
841 setup_dhcpv6_interface(i, !i->ignore || i->dhcpv6 != MODE_DISABLED);
842 setup_ndp_interface(i, !i->ignore || i->ndp != MODE_DISABLED);
843 setup_dhcpv4_interface(i, !i->ignore || i->dhcpv4 != MODE_DISABLED);
848 uci_unload(uci, dhcp);
849 uci_free_context(uci);
852 static void handle_signal(int signal)
856 if (signal == SIGHUP) {
857 if (write(reload_pipe[1], b, sizeof(b)) < 0) {}
862 static void reload_cb(struct uloop_fd *u, _unused unsigned int events)
865 if (read(u->fd, b, sizeof(b)) < 0) {}
870 static struct uloop_fd reload_fd = { .cb = reload_cb };
872 void odhcpd_run(void)
874 if (pipe2(reload_pipe, O_NONBLOCK | O_CLOEXEC) < 0) {}
876 reload_fd.fd = reload_pipe[0];
877 uloop_fd_add(&reload_fd, ULOOP_READ);
879 signal(SIGTERM, handle_signal);
880 signal(SIGINT, handle_signal);
881 signal(SIGHUP, handle_signal);
891 while (!list_empty(&interfaces))
892 close_interface(list_first_entry(&interfaces, struct interface, head));