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_DHCPV4_FORCERECONF,
46 IFACE_ATTR_DHCPV6_RAW,
47 IFACE_ATTR_DHCPV6_ASSIGNALL,
48 IFACE_ATTR_RA_DEFAULT,
49 IFACE_ATTR_RA_MANAGEMENT,
50 IFACE_ATTR_RA_OFFLINK,
51 IFACE_ATTR_RA_PREFERENCE,
52 IFACE_ATTR_RA_ADVROUTER,
53 IFACE_ATTR_RA_MININTERVAL,
54 IFACE_ATTR_RA_MAXINTERVAL,
55 IFACE_ATTR_RA_LIFETIME,
56 IFACE_ATTR_RA_USELEASETIME,
57 IFACE_ATTR_RA_REACHABLETIME,
58 IFACE_ATTR_RA_RETRANSTIME,
59 IFACE_ATTR_RA_HOPLIMIT,
61 IFACE_ATTR_PD_MANAGER,
63 IFACE_ATTR_NDPROXY_ROUTING,
64 IFACE_ATTR_NDPROXY_SLAVE,
65 IFACE_ATTR_PREFIX_FILTER,
69 static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
70 [IFACE_ATTR_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
71 [IFACE_ATTR_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
72 [IFACE_ATTR_NETWORKID] = { .name = "networkid", .type = BLOBMSG_TYPE_STRING },
73 [IFACE_ATTR_DYNAMICDHCP] = { .name = "dynamicdhcp", .type = BLOBMSG_TYPE_BOOL },
74 [IFACE_ATTR_IGNORE] = { .name = "ignore", .type = BLOBMSG_TYPE_BOOL },
75 [IFACE_ATTR_LEASETIME] = { .name = "leasetime", .type = BLOBMSG_TYPE_STRING },
76 [IFACE_ATTR_START] = { .name = "start", .type = BLOBMSG_TYPE_INT32 },
77 [IFACE_ATTR_LIMIT] = { .name = "limit", .type = BLOBMSG_TYPE_INT32 },
78 [IFACE_ATTR_MASTER] = { .name = "master", .type = BLOBMSG_TYPE_BOOL },
79 [IFACE_ATTR_UPSTREAM] = { .name = "upstream", .type = BLOBMSG_TYPE_ARRAY },
80 [IFACE_ATTR_RA] = { .name = "ra", .type = BLOBMSG_TYPE_STRING },
81 [IFACE_ATTR_DHCPV4] = { .name = "dhcpv4", .type = BLOBMSG_TYPE_STRING },
82 [IFACE_ATTR_DHCPV6] = { .name = "dhcpv6", .type = BLOBMSG_TYPE_STRING },
83 [IFACE_ATTR_NDP] = { .name = "ndp", .type = BLOBMSG_TYPE_STRING },
84 [IFACE_ATTR_ROUTER] = { .name = "router", .type = BLOBMSG_TYPE_ARRAY },
85 [IFACE_ATTR_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
86 [IFACE_ATTR_DOMAIN] = { .name = "domain", .type = BLOBMSG_TYPE_ARRAY },
87 [IFACE_ATTR_FILTER_CLASS] = { .name = "filter_class", .type = BLOBMSG_TYPE_STRING },
88 [IFACE_ATTR_DHCPV4_FORCERECONF] = { .name = "dhcpv4_forcereconf", .type = BLOBMSG_TYPE_BOOL },
89 [IFACE_ATTR_DHCPV6_RAW] = { .name = "dhcpv6_raw", .type = BLOBMSG_TYPE_STRING },
90 [IFACE_ATTR_DHCPV6_ASSIGNALL] = { .name ="dhcpv6_assignall", .type = BLOBMSG_TYPE_BOOL },
91 [IFACE_ATTR_PD_MANAGER] = { .name = "pd_manager", .type = BLOBMSG_TYPE_STRING },
92 [IFACE_ATTR_PD_CER] = { .name = "pd_cer", .type = BLOBMSG_TYPE_STRING },
93 [IFACE_ATTR_RA_DEFAULT] = { .name = "ra_default", .type = BLOBMSG_TYPE_INT32 },
94 [IFACE_ATTR_RA_MANAGEMENT] = { .name = "ra_management", .type = BLOBMSG_TYPE_INT32 },
95 [IFACE_ATTR_RA_OFFLINK] = { .name = "ra_offlink", .type = BLOBMSG_TYPE_BOOL },
96 [IFACE_ATTR_RA_PREFERENCE] = { .name = "ra_preference", .type = BLOBMSG_TYPE_STRING },
97 [IFACE_ATTR_RA_ADVROUTER] = { .name = "ra_advrouter", .type = BLOBMSG_TYPE_BOOL },
98 [IFACE_ATTR_RA_MININTERVAL] = { .name = "ra_mininterval", .type = BLOBMSG_TYPE_INT32 },
99 [IFACE_ATTR_RA_MAXINTERVAL] = { .name = "ra_maxinterval", .type = BLOBMSG_TYPE_INT32 },
100 [IFACE_ATTR_RA_LIFETIME] = { .name = "ra_lifetime", .type = BLOBMSG_TYPE_INT32 },
101 [IFACE_ATTR_RA_USELEASETIME] = { .name = "ra_useleasetime", .type = BLOBMSG_TYPE_BOOL },
102 [IFACE_ATTR_RA_REACHABLETIME] = { .name = "ra_reachabletime", .type = BLOBMSG_TYPE_INT32 },
103 [IFACE_ATTR_RA_RETRANSTIME] = { .name = "ra_retranstime", .type = BLOBMSG_TYPE_INT32 },
104 [IFACE_ATTR_RA_HOPLIMIT] = { .name = "ra_hoplimit", .type = BLOBMSG_TYPE_INT32 },
105 [IFACE_ATTR_RA_MTU] = { .name = "ra_mtu", .type = BLOBMSG_TYPE_INT32 },
106 [IFACE_ATTR_NDPROXY_ROUTING] = { .name = "ndproxy_routing", .type = BLOBMSG_TYPE_BOOL },
107 [IFACE_ATTR_NDPROXY_SLAVE] = { .name = "ndproxy_slave", .type = BLOBMSG_TYPE_BOOL },
108 [IFACE_ATTR_PREFIX_FILTER] = { .name = "prefix_filter", .type = BLOBMSG_TYPE_STRING },
111 static const struct uci_blob_param_info iface_attr_info[IFACE_ATTR_MAX] = {
112 [IFACE_ATTR_UPSTREAM] = { .type = BLOBMSG_TYPE_STRING },
113 [IFACE_ATTR_DNS] = { .type = BLOBMSG_TYPE_STRING },
114 [IFACE_ATTR_DOMAIN] = { .type = BLOBMSG_TYPE_STRING },
117 const struct uci_blob_param_list interface_attr_list = {
118 .n_params = IFACE_ATTR_MAX,
119 .params = iface_attrs,
120 .info = iface_attr_info,
128 LEASE_ATTR_LEASETIME,
133 static const struct blobmsg_policy lease_attrs[LEASE_ATTR_MAX] = {
134 [LEASE_ATTR_IP] = { .name = "ip", .type = BLOBMSG_TYPE_STRING },
135 [LEASE_ATTR_MAC] = { .name = "mac", .type = BLOBMSG_TYPE_STRING },
136 [LEASE_ATTR_DUID] = { .name = "duid", .type = BLOBMSG_TYPE_STRING },
137 [LEASE_ATTR_HOSTID] = { .name = "hostid", .type = BLOBMSG_TYPE_STRING },
138 [LEASE_ATTR_LEASETIME] = { .name = "leasetime", .type = BLOBMSG_TYPE_STRING },
139 [LEASE_ATTR_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
142 const struct uci_blob_param_list lease_attr_list = {
143 .n_params = LEASE_ATTR_MAX,
144 .params = lease_attrs,
149 ODHCPD_ATTR_MAINDHCP,
150 ODHCPD_ATTR_LEASEFILE,
151 ODHCPD_ATTR_LEASETRIGGER,
152 ODHCPD_ATTR_LOGLEVEL,
156 static const struct blobmsg_policy odhcpd_attrs[LEASE_ATTR_MAX] = {
157 [ODHCPD_ATTR_LEGACY] = { .name = "legacy", .type = BLOBMSG_TYPE_BOOL },
158 [ODHCPD_ATTR_MAINDHCP] = { .name = "maindhcp", .type = BLOBMSG_TYPE_BOOL },
159 [ODHCPD_ATTR_LEASEFILE] = { .name = "leasefile", .type = BLOBMSG_TYPE_STRING },
160 [ODHCPD_ATTR_LEASETRIGGER] = { .name = "leasetrigger", .type = BLOBMSG_TYPE_STRING },
161 [ODHCPD_ATTR_LOGLEVEL] = { .name = "loglevel", .type = BLOBMSG_TYPE_INT32 },
164 const struct uci_blob_param_list odhcpd_attr_list = {
165 .n_params = ODHCPD_ATTR_MAX,
166 .params = odhcpd_attrs,
169 static int mkdir_p(char *dir, mode_t mask)
171 char *l = strrchr(dir, '/');
179 if (mkdir_p(dir, mask))
184 ret = mkdir(dir, mask);
185 if (ret && errno == EEXIST)
189 syslog(LOG_ERR, "mkdir(%s, %d) failed: %m\n", dir, mask);
194 static void free_lease(struct lease *l)
203 static struct interface* get_interface(const char *name)
206 list_for_each_entry(c, &interfaces, head)
207 if (!strcmp(c->name, name))
212 static void set_interface_defaults(struct interface *iface)
214 iface->learn_routes = 1;
215 iface->dhcpv4_leasetime = 43200;
216 iface->dhcpv6_assignall = true;
217 iface->ra_managed = RA_MANAGED_MFLAG;
218 iface->ra_maxinterval = 600;
219 iface->ra_mininterval = iface->ra_maxinterval/3;
220 iface->ra_lifetime = -1;
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 if (iface->head.next)
239 list_del(&iface->head);
241 router_setup_interface(iface, false);
242 dhcpv6_setup_interface(iface, false);
243 ndp_setup_interface(iface, false);
244 #ifdef DHCPV4_SUPPORT
245 dhcpv4_setup_interface(iface, false);
248 clean_interface(iface);
255 static int parse_mode(const char *mode)
257 if (!strcmp(mode, "disabled"))
258 return MODE_DISABLED;
259 else if (!strcmp(mode, "server"))
261 else if (!strcmp(mode, "relay"))
263 else if (!strcmp(mode, "hybrid"))
269 static void set_config(struct uci_section *s)
271 struct blob_attr *tb[ODHCPD_ATTR_MAX], *c;
273 blob_buf_init(&b, 0);
274 uci_to_blob(&b, s, &odhcpd_attr_list);
275 blobmsg_parse(odhcpd_attrs, ODHCPD_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
277 if ((c = tb[ODHCPD_ATTR_LEGACY]))
278 config.legacy = blobmsg_get_bool(c);
280 if ((c = tb[ODHCPD_ATTR_MAINDHCP]))
281 config.main_dhcpv4 = blobmsg_get_bool(c);
283 if ((c = tb[ODHCPD_ATTR_LEASEFILE])) {
284 free(config.dhcp_statefile);
285 config.dhcp_statefile = strdup(blobmsg_get_string(c));
288 if ((c = tb[ODHCPD_ATTR_LEASETRIGGER])) {
289 free(config.dhcp_cb);
290 config.dhcp_cb = strdup(blobmsg_get_string(c));
293 if ((c = tb[ODHCPD_ATTR_LOGLEVEL])) {
294 int log_level = (blobmsg_get_u32(c) & LOG_PRIMASK);
296 if (config.log_level != log_level) {
297 config.log_level = log_level;
298 setlogmask(LOG_UPTO(config.log_level));
303 static double parse_leasetime(struct blob_attr *c) {
304 char *val = blobmsg_get_string(c), *endptr = NULL;
305 double time = strcmp(val, "infinite") ? strtod(val, &endptr) : UINT32_MAX;
307 if (time && endptr && endptr[0]) {
308 if (endptr[0] == 's')
310 else if (endptr[0] == 'm')
312 else if (endptr[0] == 'h')
314 else if (endptr[0] == 'd')
316 else if (endptr[0] == 'w')
317 time *= 7 * 24 * 3600;
331 static int set_lease(struct uci_section *s)
333 struct blob_attr *tb[LEASE_ATTR_MAX], *c;
335 blob_buf_init(&b, 0);
336 uci_to_blob(&b, s, &lease_attr_list);
337 blobmsg_parse(lease_attrs, LEASE_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
340 if ((c = tb[LEASE_ATTR_NAME]))
341 hostlen = blobmsg_data_len(c);
343 struct lease *lease = calloc(1, sizeof(*lease) + hostlen);
348 memcpy(lease->hostname, blobmsg_get_string(c), hostlen);
350 if ((c = tb[LEASE_ATTR_IP]))
351 if (inet_pton(AF_INET, blobmsg_get_string(c), &lease->ipaddr) < 0)
354 if ((c = tb[LEASE_ATTR_MAC]))
355 if (!ether_aton_r(blobmsg_get_string(c), &lease->mac))
358 if ((c = tb[LEASE_ATTR_DUID])) {
359 size_t duidlen = (blobmsg_data_len(c) - 1) / 2;
360 lease->duid = malloc(duidlen);
364 ssize_t len = odhcpd_unhexlify(lease->duid,
365 duidlen, blobmsg_get_string(c));
370 lease->duid_len = len;
373 if ((c = tb[LEASE_ATTR_HOSTID])) {
375 lease->hostid = strtoul(blobmsg_get_string(c), NULL, 16);
380 if ((c = tb[LEASE_ATTR_LEASETIME])) {
381 double time = parse_leasetime(c);
385 lease->dhcpv4_leasetime = time;
388 list_add(&lease->head, &leases);
398 int config_parse_interface(void *data, size_t len, const char *name, bool overwrite)
400 struct blob_attr *tb[IFACE_ATTR_MAX], *c;
401 bool get_addrs = false;
403 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb, data, len);
405 if (tb[IFACE_ATTR_INTERFACE])
406 name = blobmsg_get_string(tb[IFACE_ATTR_INTERFACE]);
411 struct interface *iface = get_interface(name);
415 iface = calloc_a(sizeof(*iface), &iface_name, strlen(name) + 1);
419 iface->name = strcpy(iface_name, name);
421 set_interface_defaults(iface);
423 list_add(&iface->head, &interfaces);
424 get_addrs = overwrite = true;
427 const char *ifname = NULL;
429 if ((c = tb[IFACE_ATTR_IFNAME]))
430 ifname = blobmsg_get_string(c);
431 else if ((c = tb[IFACE_ATTR_NETWORKID]))
432 ifname = blobmsg_get_string(c);
436 if (overwrite || !iface->ifname)
437 ifname = ubus_get_ifname(name);
440 if (!iface->ifname && !ifname)
445 iface->ifname = strdup(ifname);
450 if (!iface->ifindex &&
451 (iface->ifindex = if_nametoindex(iface->ifname)) <= 0)
456 ssize_t len = netlink_get_interface_addrs(iface->ifindex,
457 true, &iface->addr6);
460 iface->addr6_len = len;
462 len = netlink_get_interface_addrs(iface->ifindex,
463 false, &iface->addr4);
465 iface->addr4_len = len;
470 if ((c = tb[IFACE_ATTR_DYNAMICDHCP]))
471 iface->no_dynamic_dhcp = !blobmsg_get_bool(c);
473 if (overwrite && (c = tb[IFACE_ATTR_IGNORE]))
474 iface->ignore = blobmsg_get_bool(c);
476 if ((c = tb[IFACE_ATTR_LEASETIME])) {
477 double time = parse_leasetime(c);
481 iface->dhcpv4_leasetime = time;
484 if ((c = tb[IFACE_ATTR_START])) {
485 iface->dhcpv4_start.s_addr = htonl(blobmsg_get_u32(c));
487 if (config.main_dhcpv4 && config.legacy)
488 iface->dhcpv4 = MODE_SERVER;
491 if ((c = tb[IFACE_ATTR_LIMIT]))
492 iface->dhcpv4_end.s_addr = htonl(
493 ntohl(iface->dhcpv4_start.s_addr) + blobmsg_get_u32(c));
495 if ((c = tb[IFACE_ATTR_MASTER]))
496 iface->master = blobmsg_get_bool(c);
498 if (overwrite && (c = tb[IFACE_ATTR_UPSTREAM])) {
499 struct blob_attr *cur;
502 blobmsg_for_each_attr(cur, c, rem) {
503 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
506 iface->upstream = realloc(iface->upstream,
507 iface->upstream_len + blobmsg_data_len(cur));
508 if (!iface->upstream)
511 memcpy(iface->upstream + iface->upstream_len, blobmsg_get_string(cur), blobmsg_data_len(cur));
512 iface->upstream_len += blobmsg_data_len(cur);
517 if ((c = tb[IFACE_ATTR_RA])) {
518 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
524 if ((c = tb[IFACE_ATTR_DHCPV4])) {
525 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0) {
526 if (config.main_dhcpv4)
527 iface->dhcpv4 = mode;
533 if ((c = tb[IFACE_ATTR_DHCPV6])) {
534 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
535 iface->dhcpv6 = mode;
540 if ((c = tb[IFACE_ATTR_NDP])) {
541 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
547 if ((c = tb[IFACE_ATTR_ROUTER])) {
548 struct blob_attr *cur;
551 blobmsg_for_each_attr(cur, c, rem) {
552 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
555 struct in_addr addr4;
556 if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
557 iface->dhcpv4_router = realloc(iface->dhcpv4_router,
558 (++iface->dhcpv4_router_cnt) * sizeof(*iface->dhcpv4_router));
559 if (!iface->dhcpv4_router)
562 iface->dhcpv4_router[iface->dhcpv4_router_cnt - 1] = addr4;
568 if ((c = tb[IFACE_ATTR_DNS])) {
569 struct blob_attr *cur;
572 iface->always_rewrite_dns = true;
573 blobmsg_for_each_attr(cur, c, rem) {
574 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
577 struct in_addr addr4;
578 struct in6_addr addr6;
579 if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
580 iface->dhcpv4_dns = realloc(iface->dhcpv4_dns,
581 (++iface->dhcpv4_dns_cnt) * sizeof(*iface->dhcpv4_dns));
582 if (!iface->dhcpv4_dns)
585 iface->dhcpv4_dns[iface->dhcpv4_dns_cnt - 1] = addr4;
586 } else if (inet_pton(AF_INET6, blobmsg_get_string(cur), &addr6) == 1) {
587 iface->dns = realloc(iface->dns,
588 (++iface->dns_cnt) * sizeof(*iface->dns));
592 iface->dns[iface->dns_cnt - 1] = addr6;
598 if ((c = tb[IFACE_ATTR_DOMAIN])) {
599 struct blob_attr *cur;
602 blobmsg_for_each_attr(cur, c, rem) {
603 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
607 char *domain = blobmsg_get_string(cur);
608 size_t domainlen = strlen(domain);
609 if (domainlen > 0 && domain[domainlen - 1] == '.')
610 domain[domainlen - 1] = 0;
612 int len = dn_comp(domain, buf, sizeof(buf), NULL, NULL);
616 iface->search = realloc(iface->search, iface->search_len + len);
620 memcpy(&iface->search[iface->search_len], buf, len);
621 iface->search_len += len;
625 if ((c = tb[IFACE_ATTR_FILTER_CLASS])) {
626 iface->filter_class = realloc(iface->filter_class, blobmsg_data_len(c) + 1);
627 memcpy(iface->filter_class, blobmsg_get_string(c), blobmsg_data_len(c) + 1);
630 if ((c = tb[IFACE_ATTR_DHCPV4_FORCERECONF]))
631 iface->dhcpv4_forcereconf = blobmsg_get_bool(c);
633 if ((c = tb[IFACE_ATTR_DHCPV6_RAW])) {
634 iface->dhcpv6_raw_len = blobmsg_data_len(c) / 2;
635 iface->dhcpv6_raw = realloc(iface->dhcpv6_raw, iface->dhcpv6_raw_len);
636 odhcpd_unhexlify(iface->dhcpv6_raw, iface->dhcpv6_raw_len, blobmsg_get_string(c));
639 if ((c = tb[IFACE_ATTR_DHCPV6_ASSIGNALL]))
640 iface->dhcpv6_assignall = blobmsg_get_bool(c);
642 if ((c = tb[IFACE_ATTR_RA_DEFAULT]))
643 iface->default_router = blobmsg_get_u32(c);
645 if ((c = tb[IFACE_ATTR_RA_MANAGEMENT]))
646 iface->ra_managed = blobmsg_get_u32(c);
648 if ((c = tb[IFACE_ATTR_RA_REACHABLETIME])) {
649 uint32_t ra_reachabletime = blobmsg_get_u32(c);
650 if (ra_reachabletime > 3600000)
653 iface->ra_reachabletime = ra_reachabletime;
656 if ((c = tb[IFACE_ATTR_RA_RETRANSTIME])) {
657 uint32_t ra_retranstime = blobmsg_get_u32(c);
658 if (ra_retranstime > 60000)
661 iface->ra_retranstime = ra_retranstime;
664 if ((c = tb[IFACE_ATTR_RA_HOPLIMIT])) {
665 uint32_t ra_hoplimit = blobmsg_get_u32(c);
666 if (ra_hoplimit > 255)
669 iface->ra_hoplimit = ra_hoplimit;
672 if ((c = tb[IFACE_ATTR_RA_MTU])) {
673 uint32_t ra_mtu = blobmsg_get_u32(c);
674 if (ra_mtu < 1280 || ra_mtu > 65535)
677 iface->ra_mtu = ra_mtu;
680 if ((c = tb[IFACE_ATTR_RA_OFFLINK]))
681 iface->ra_not_onlink = blobmsg_get_bool(c);
683 if ((c = tb[IFACE_ATTR_RA_ADVROUTER]))
684 iface->ra_advrouter = blobmsg_get_bool(c);
686 if ((c = tb[IFACE_ATTR_RA_MININTERVAL]))
687 iface->ra_mininterval = blobmsg_get_u32(c);
689 if ((c = tb[IFACE_ATTR_RA_MAXINTERVAL]))
690 iface->ra_maxinterval = blobmsg_get_u32(c);
692 if ((c = tb[IFACE_ATTR_RA_LIFETIME]))
693 iface->ra_lifetime = blobmsg_get_u32(c);
695 if ((c = tb[IFACE_ATTR_RA_USELEASETIME]))
696 iface->ra_useleasetime = blobmsg_get_bool(c);
698 if ((c = tb[IFACE_ATTR_RA_PREFERENCE])) {
699 const char *prio = blobmsg_get_string(c);
701 if (!strcmp(prio, "high"))
702 iface->route_preference = 1;
703 else if (!strcmp(prio, "low"))
704 iface->route_preference = -1;
705 else if (!strcmp(prio, "medium") || !strcmp(prio, "default"))
706 iface->route_preference = 0;
711 if ((c = tb[IFACE_ATTR_PD_MANAGER]))
712 strncpy(iface->dhcpv6_pd_manager, blobmsg_get_string(c),
713 sizeof(iface->dhcpv6_pd_manager) - 1);
715 if ((c = tb[IFACE_ATTR_PD_CER]) &&
716 inet_pton(AF_INET6, blobmsg_get_string(c), &iface->dhcpv6_pd_cer) < 1)
719 if ((c = tb[IFACE_ATTR_NDPROXY_ROUTING]))
720 iface->learn_routes = blobmsg_get_bool(c);
722 if ((c = tb[IFACE_ATTR_NDPROXY_SLAVE]))
723 iface->external = blobmsg_get_bool(c);
725 if ((c = tb[IFACE_ATTR_PREFIX_FILTER])) {
726 const char *str = blobmsg_get_string(c);
727 char *astr = malloc(strlen(str) + 1);
730 if (!astr || !strcpy(astr, str) ||
731 (delim = strchr(astr, '/')) == NULL || (*(delim++) = 0) ||
732 sscanf(delim, "%i", &l) == 0 || l > 128 ||
733 inet_pton(AF_INET6, astr, &iface->pio_filter_addr) == 0) {
734 iface->pio_filter_length = 0;
736 iface->pio_filter_length = l;
745 close_interface(iface);
749 static int set_interface(struct uci_section *s)
751 blob_buf_init(&b, 0);
752 uci_to_blob(&b, s, &interface_attr_list);
754 return config_parse_interface(blob_data(b.head), blob_len(b.head), s->e.name, true);
757 void odhcpd_reload(void)
759 struct uci_context *uci = uci_alloc_context();
761 while (!list_empty(&leases))
762 free_lease(list_first_entry(&leases, struct lease, head));
764 struct interface *master = NULL, *i, *n;
769 list_for_each_entry(i, &interfaces, head)
772 struct uci_package *dhcp = NULL;
773 if (!uci_load(uci, "dhcp", &dhcp)) {
774 struct uci_element *e;
775 uci_foreach_element(&dhcp->sections, e) {
776 struct uci_section *s = uci_to_section(e);
777 if (!strcmp(s->type, "host"))
779 else if (!strcmp(s->type, "odhcpd"))
783 uci_foreach_element(&dhcp->sections, e) {
784 struct uci_section *s = uci_to_section(e);
785 if (!strcmp(s->type, "dhcp"))
790 if (config.dhcp_statefile) {
791 char *path = strdup(config.dhcp_statefile);
793 mkdir_p(dirname(path), 0755);
798 ubus_apply_network();
801 bool any_dhcpv6_slave = false, any_ra_slave = false, any_ndp_slave = false;
804 list_for_each_entry(i, &interfaces, head) {
808 if (i->dhcpv6 == MODE_HYBRID || i->dhcpv6 == MODE_RELAY)
809 any_dhcpv6_slave = true;
811 if (i->ra == MODE_HYBRID || i->ra == MODE_RELAY)
814 if (i->ndp == MODE_HYBRID || i->ndp == MODE_RELAY)
815 any_ndp_slave = true;
818 /* Evaluate hybrid mode for master */
819 list_for_each_entry(i, &interfaces, head) {
823 enum odhcpd_mode hybrid_mode = MODE_DISABLED;
825 if (!ubus_has_prefix(i->name, i->ifname))
826 hybrid_mode = MODE_RELAY;
829 if (i->dhcpv6 == MODE_HYBRID)
830 i->dhcpv6 = hybrid_mode;
832 if (i->dhcpv6 == MODE_RELAY && !any_dhcpv6_slave)
833 i->dhcpv6 = MODE_DISABLED;
835 if (i->ra == MODE_HYBRID)
838 if (i->ra == MODE_RELAY && !any_ra_slave)
839 i->ra = MODE_DISABLED;
841 if (i->ndp == MODE_HYBRID)
842 i->ndp = hybrid_mode;
844 if (i->ndp == MODE_RELAY && !any_ndp_slave)
845 i->ndp = MODE_DISABLED;
847 if (i->dhcpv6 == MODE_RELAY || i->ra == MODE_RELAY || i->ndp == MODE_RELAY)
852 list_for_each_entry_safe(i, n, &interfaces, head) {
854 /* Resolve hybrid mode */
855 if (i->dhcpv6 == MODE_HYBRID)
856 i->dhcpv6 = (master && master->dhcpv6 == MODE_RELAY) ?
857 MODE_RELAY : MODE_SERVER;
859 if (i->ra == MODE_HYBRID)
860 i->ra = (master && master->ra == MODE_RELAY) ?
861 MODE_RELAY : MODE_SERVER;
863 if (i->ndp == MODE_HYBRID)
864 i->ndp = (master && master->ndp == MODE_RELAY) ?
865 MODE_RELAY : MODE_DISABLED;
867 router_setup_interface(i, !i->ignore || i->ra != MODE_DISABLED);
868 dhcpv6_setup_interface(i, !i->ignore || i->dhcpv6 != MODE_DISABLED);
869 ndp_setup_interface(i, !i->ignore || i->ndp != MODE_DISABLED);
870 #ifdef DHCPV4_SUPPORT
871 dhcpv4_setup_interface(i, !i->ignore || i->dhcpv4 != MODE_DISABLED);
877 uci_unload(uci, dhcp);
878 uci_free_context(uci);
881 static void handle_signal(int signal)
885 if (signal == SIGHUP) {
886 if (write(reload_pipe[1], b, sizeof(b)) < 0) {}
891 static void reload_cb(struct uloop_fd *u, _unused unsigned int events)
894 if (read(u->fd, b, sizeof(b)) < 0) {}
899 static struct uloop_fd reload_fd = { .cb = reload_cb };
901 void odhcpd_run(void)
903 if (pipe2(reload_pipe, O_NONBLOCK | O_CLOEXEC) < 0) {}
905 reload_fd.fd = reload_pipe[0];
906 uloop_fd_add(&reload_fd, ULOOP_READ);
908 signal(SIGTERM, handle_signal);
909 signal(SIGINT, handle_signal);
910 signal(SIGHUP, handle_signal);
920 while (!list_empty(&interfaces))
921 close_interface(list_first_entry(&interfaces, struct interface, head));