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,
68 static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
69 [IFACE_ATTR_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
70 [IFACE_ATTR_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
71 [IFACE_ATTR_NETWORKID] = { .name = "networkid", .type = BLOBMSG_TYPE_STRING },
72 [IFACE_ATTR_DYNAMICDHCP] = { .name = "dynamicdhcp", .type = BLOBMSG_TYPE_BOOL },
73 [IFACE_ATTR_IGNORE] = { .name = "ignore", .type = BLOBMSG_TYPE_BOOL },
74 [IFACE_ATTR_LEASETIME] = { .name = "leasetime", .type = BLOBMSG_TYPE_STRING },
75 [IFACE_ATTR_START] = { .name = "start", .type = BLOBMSG_TYPE_INT32 },
76 [IFACE_ATTR_LIMIT] = { .name = "limit", .type = BLOBMSG_TYPE_INT32 },
77 [IFACE_ATTR_MASTER] = { .name = "master", .type = BLOBMSG_TYPE_BOOL },
78 [IFACE_ATTR_UPSTREAM] = { .name = "upstream", .type = BLOBMSG_TYPE_ARRAY },
79 [IFACE_ATTR_RA] = { .name = "ra", .type = BLOBMSG_TYPE_STRING },
80 [IFACE_ATTR_DHCPV4] = { .name = "dhcpv4", .type = BLOBMSG_TYPE_STRING },
81 [IFACE_ATTR_DHCPV6] = { .name = "dhcpv6", .type = BLOBMSG_TYPE_STRING },
82 [IFACE_ATTR_NDP] = { .name = "ndp", .type = BLOBMSG_TYPE_STRING },
83 [IFACE_ATTR_ROUTER] = { .name = "router", .type = BLOBMSG_TYPE_ARRAY },
84 [IFACE_ATTR_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
85 [IFACE_ATTR_DOMAIN] = { .name = "domain", .type = BLOBMSG_TYPE_ARRAY },
86 [IFACE_ATTR_FILTER_CLASS] = { .name = "filter_class", .type = BLOBMSG_TYPE_STRING },
87 [IFACE_ATTR_DHCPV4_FORCERECONF] = { .name = "dhcpv4_forcereconf", .type = BLOBMSG_TYPE_BOOL },
88 [IFACE_ATTR_DHCPV6_RAW] = { .name = "dhcpv6_raw", .type = BLOBMSG_TYPE_STRING },
89 [IFACE_ATTR_DHCPV6_ASSIGNALL] = { .name ="dhcpv6_assignall", .type = BLOBMSG_TYPE_BOOL },
90 [IFACE_ATTR_PD_MANAGER] = { .name = "pd_manager", .type = BLOBMSG_TYPE_STRING },
91 [IFACE_ATTR_PD_CER] = { .name = "pd_cer", .type = BLOBMSG_TYPE_STRING },
92 [IFACE_ATTR_RA_DEFAULT] = { .name = "ra_default", .type = BLOBMSG_TYPE_INT32 },
93 [IFACE_ATTR_RA_MANAGEMENT] = { .name = "ra_management", .type = BLOBMSG_TYPE_INT32 },
94 [IFACE_ATTR_RA_OFFLINK] = { .name = "ra_offlink", .type = BLOBMSG_TYPE_BOOL },
95 [IFACE_ATTR_RA_PREFERENCE] = { .name = "ra_preference", .type = BLOBMSG_TYPE_STRING },
96 [IFACE_ATTR_RA_ADVROUTER] = { .name = "ra_advrouter", .type = BLOBMSG_TYPE_BOOL },
97 [IFACE_ATTR_RA_MININTERVAL] = { .name = "ra_mininterval", .type = BLOBMSG_TYPE_INT32 },
98 [IFACE_ATTR_RA_MAXINTERVAL] = { .name = "ra_maxinterval", .type = BLOBMSG_TYPE_INT32 },
99 [IFACE_ATTR_RA_LIFETIME] = { .name = "ra_lifetime", .type = BLOBMSG_TYPE_INT32 },
100 [IFACE_ATTR_RA_USELEASETIME] = { .name = "ra_useleasetime", .type = BLOBMSG_TYPE_BOOL },
101 [IFACE_ATTR_RA_REACHABLETIME] = { .name = "ra_reachabletime", .type = BLOBMSG_TYPE_INT32 },
102 [IFACE_ATTR_RA_RETRANSTIME] = { .name = "ra_retranstime", .type = BLOBMSG_TYPE_INT32 },
103 [IFACE_ATTR_RA_HOPLIMIT] = { .name = "ra_hoplimit", .type = BLOBMSG_TYPE_INT32 },
104 [IFACE_ATTR_RA_MTU] = { .name = "ra_mtu", .type = BLOBMSG_TYPE_INT32 },
105 [IFACE_ATTR_NDPROXY_ROUTING] = { .name = "ndproxy_routing", .type = BLOBMSG_TYPE_BOOL },
106 [IFACE_ATTR_NDPROXY_SLAVE] = { .name = "ndproxy_slave", .type = BLOBMSG_TYPE_BOOL },
109 static const struct uci_blob_param_info iface_attr_info[IFACE_ATTR_MAX] = {
110 [IFACE_ATTR_UPSTREAM] = { .type = BLOBMSG_TYPE_STRING },
111 [IFACE_ATTR_DNS] = { .type = BLOBMSG_TYPE_STRING },
112 [IFACE_ATTR_DOMAIN] = { .type = BLOBMSG_TYPE_STRING },
115 const struct uci_blob_param_list interface_attr_list = {
116 .n_params = IFACE_ATTR_MAX,
117 .params = iface_attrs,
118 .info = iface_attr_info,
126 LEASE_ATTR_LEASETIME,
131 static const struct blobmsg_policy lease_attrs[LEASE_ATTR_MAX] = {
132 [LEASE_ATTR_IP] = { .name = "ip", .type = BLOBMSG_TYPE_STRING },
133 [LEASE_ATTR_MAC] = { .name = "mac", .type = BLOBMSG_TYPE_STRING },
134 [LEASE_ATTR_DUID] = { .name = "duid", .type = BLOBMSG_TYPE_STRING },
135 [LEASE_ATTR_HOSTID] = { .name = "hostid", .type = BLOBMSG_TYPE_STRING },
136 [LEASE_ATTR_LEASETIME] = { .name = "leasetime", .type = BLOBMSG_TYPE_STRING },
137 [LEASE_ATTR_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
140 const struct uci_blob_param_list lease_attr_list = {
141 .n_params = LEASE_ATTR_MAX,
142 .params = lease_attrs,
147 ODHCPD_ATTR_MAINDHCP,
148 ODHCPD_ATTR_LEASEFILE,
149 ODHCPD_ATTR_LEASETRIGGER,
150 ODHCPD_ATTR_LOGLEVEL,
154 static const struct blobmsg_policy odhcpd_attrs[LEASE_ATTR_MAX] = {
155 [ODHCPD_ATTR_LEGACY] = { .name = "legacy", .type = BLOBMSG_TYPE_BOOL },
156 [ODHCPD_ATTR_MAINDHCP] = { .name = "maindhcp", .type = BLOBMSG_TYPE_BOOL },
157 [ODHCPD_ATTR_LEASEFILE] = { .name = "leasefile", .type = BLOBMSG_TYPE_STRING },
158 [ODHCPD_ATTR_LEASETRIGGER] = { .name = "leasetrigger", .type = BLOBMSG_TYPE_STRING },
159 [ODHCPD_ATTR_LOGLEVEL] = { .name = "loglevel", .type = BLOBMSG_TYPE_INT32 },
162 const struct uci_blob_param_list odhcpd_attr_list = {
163 .n_params = ODHCPD_ATTR_MAX,
164 .params = odhcpd_attrs,
167 static int mkdir_p(char *dir, mode_t mask)
169 char *l = strrchr(dir, '/');
177 if (mkdir_p(dir, mask))
182 ret = mkdir(dir, mask);
183 if (ret && errno == EEXIST)
187 syslog(LOG_ERR, "mkdir(%s, %d) failed: %s\n", dir, mask, strerror(errno));
192 static void free_lease(struct lease *l)
201 static struct interface* get_interface(const char *name)
204 list_for_each_entry(c, &interfaces, head)
205 if (!strcmp(c->name, name))
210 static void set_interface_defaults(struct interface *iface)
212 iface->learn_routes = 1;
213 iface->dhcpv4_leasetime = 43200;
214 iface->dhcpv6_assignall = true;
215 iface->ra_managed = RA_MANAGED_MFLAG;
216 iface->ra_maxinterval = 600;
217 iface->ra_mininterval = iface->ra_maxinterval/3;
218 iface->ra_lifetime = -1;
221 static void clean_interface(struct interface *iface)
225 free(iface->upstream);
226 free(iface->dhcpv4_router);
227 free(iface->dhcpv4_dns);
228 free(iface->dhcpv6_raw);
229 free(iface->filter_class);
230 memset(&iface->ra, 0, sizeof(*iface) - offsetof(struct interface, ra));
231 set_interface_defaults(iface);
234 static void close_interface(struct interface *iface)
236 if (iface->head.next)
237 list_del(&iface->head);
239 router_setup_interface(iface, false);
240 dhcpv6_setup_interface(iface, false);
241 ndp_setup_interface(iface, false);
242 #ifdef DHCPV4_SUPPORT
243 dhcpv4_setup_interface(iface, false);
246 clean_interface(iface);
253 static int parse_mode(const char *mode)
255 if (!strcmp(mode, "disabled"))
256 return MODE_DISABLED;
257 else if (!strcmp(mode, "server"))
259 else if (!strcmp(mode, "relay"))
261 else if (!strcmp(mode, "hybrid"))
267 static void set_config(struct uci_section *s)
269 struct blob_attr *tb[ODHCPD_ATTR_MAX], *c;
271 blob_buf_init(&b, 0);
272 uci_to_blob(&b, s, &odhcpd_attr_list);
273 blobmsg_parse(odhcpd_attrs, ODHCPD_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
275 if ((c = tb[ODHCPD_ATTR_LEGACY]))
276 config.legacy = blobmsg_get_bool(c);
278 if ((c = tb[ODHCPD_ATTR_MAINDHCP]))
279 config.main_dhcpv4 = blobmsg_get_bool(c);
281 if ((c = tb[ODHCPD_ATTR_LEASEFILE])) {
282 free(config.dhcp_statefile);
283 config.dhcp_statefile = strdup(blobmsg_get_string(c));
286 if ((c = tb[ODHCPD_ATTR_LEASETRIGGER])) {
287 free(config.dhcp_cb);
288 config.dhcp_cb = strdup(blobmsg_get_string(c));
291 if ((c = tb[ODHCPD_ATTR_LOGLEVEL])) {
292 int log_level = (blobmsg_get_u32(c) & LOG_PRIMASK);
294 if (config.log_level != log_level) {
295 config.log_level = log_level;
296 setlogmask(LOG_UPTO(config.log_level));
301 static double parse_leasetime(struct blob_attr *c) {
302 char *val = blobmsg_get_string(c), *endptr = NULL;
303 double time = strcmp(val, "infinite") ? strtod(val, &endptr) : UINT32_MAX;
305 if (time && endptr && endptr[0]) {
306 if (endptr[0] == 's')
308 else if (endptr[0] == 'm')
310 else if (endptr[0] == 'h')
312 else if (endptr[0] == 'd')
314 else if (endptr[0] == 'w')
315 time *= 7 * 24 * 3600;
329 static int set_lease(struct uci_section *s)
331 struct blob_attr *tb[LEASE_ATTR_MAX], *c;
333 blob_buf_init(&b, 0);
334 uci_to_blob(&b, s, &lease_attr_list);
335 blobmsg_parse(lease_attrs, LEASE_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
338 if ((c = tb[LEASE_ATTR_NAME]))
339 hostlen = blobmsg_data_len(c);
341 struct lease *lease = calloc(1, sizeof(*lease) + hostlen);
346 memcpy(lease->hostname, blobmsg_get_string(c), hostlen);
348 if ((c = tb[LEASE_ATTR_IP]))
349 if (inet_pton(AF_INET, blobmsg_get_string(c), &lease->ipaddr) < 0)
352 if ((c = tb[LEASE_ATTR_MAC]))
353 if (!ether_aton_r(blobmsg_get_string(c), &lease->mac))
356 if ((c = tb[LEASE_ATTR_DUID])) {
357 size_t duidlen = (blobmsg_data_len(c) - 1) / 2;
358 lease->duid = malloc(duidlen);
362 ssize_t len = odhcpd_unhexlify(lease->duid,
363 duidlen, blobmsg_get_string(c));
368 lease->duid_len = len;
371 if ((c = tb[LEASE_ATTR_HOSTID])) {
373 lease->hostid = strtoul(blobmsg_get_string(c), NULL, 16);
378 if ((c = tb[LEASE_ATTR_LEASETIME])) {
379 double time = parse_leasetime(c);
383 lease->dhcpv4_leasetime = time;
386 list_add(&lease->head, &leases);
396 int config_parse_interface(void *data, size_t len, const char *name, bool overwrite)
398 struct blob_attr *tb[IFACE_ATTR_MAX], *c;
399 bool get_addrs = false;
401 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb, data, len);
403 if (tb[IFACE_ATTR_INTERFACE])
404 name = blobmsg_get_string(tb[IFACE_ATTR_INTERFACE]);
409 struct interface *iface = get_interface(name);
413 iface = calloc_a(sizeof(*iface), &iface_name, strlen(name) + 1);
417 iface->name = strcpy(iface_name, name);
419 set_interface_defaults(iface);
421 list_add(&iface->head, &interfaces);
422 get_addrs = overwrite = true;
425 const char *ifname = NULL;
427 if ((c = tb[IFACE_ATTR_IFNAME]))
428 ifname = blobmsg_get_string(c);
429 else if ((c = tb[IFACE_ATTR_NETWORKID]))
430 ifname = blobmsg_get_string(c);
434 if (overwrite || !iface->ifname)
435 ifname = ubus_get_ifname(name);
438 if (!iface->ifname && !ifname)
443 iface->ifname = strdup(ifname);
448 if (!iface->ifindex &&
449 (iface->ifindex = if_nametoindex(iface->ifname)) <= 0)
454 ssize_t len = netlink_get_interface_addrs(iface->ifindex,
455 true, &iface->addr6);
458 iface->addr6_len = len;
460 len = netlink_get_interface_addrs(iface->ifindex,
461 false, &iface->addr4);
463 iface->addr4_len = len;
468 if ((c = tb[IFACE_ATTR_DYNAMICDHCP]))
469 iface->no_dynamic_dhcp = !blobmsg_get_bool(c);
471 if (overwrite && (c = tb[IFACE_ATTR_IGNORE]))
472 iface->ignore = blobmsg_get_bool(c);
474 if ((c = tb[IFACE_ATTR_LEASETIME])) {
475 double time = parse_leasetime(c);
479 iface->dhcpv4_leasetime = time;
482 if ((c = tb[IFACE_ATTR_START])) {
483 iface->dhcpv4_start.s_addr = htonl(blobmsg_get_u32(c));
485 if (config.main_dhcpv4 && config.legacy)
486 iface->dhcpv4 = MODE_SERVER;
489 if ((c = tb[IFACE_ATTR_LIMIT]))
490 iface->dhcpv4_end.s_addr = htonl(
491 ntohl(iface->dhcpv4_start.s_addr) + blobmsg_get_u32(c));
493 if ((c = tb[IFACE_ATTR_MASTER]))
494 iface->master = blobmsg_get_bool(c);
496 if (overwrite && (c = tb[IFACE_ATTR_UPSTREAM])) {
497 struct blob_attr *cur;
500 blobmsg_for_each_attr(cur, c, rem) {
501 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
504 iface->upstream = realloc(iface->upstream,
505 iface->upstream_len + blobmsg_data_len(cur));
506 if (!iface->upstream)
509 memcpy(iface->upstream + iface->upstream_len, blobmsg_get_string(cur), blobmsg_data_len(cur));
510 iface->upstream_len += blobmsg_data_len(cur);
515 if ((c = tb[IFACE_ATTR_RA])) {
516 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
522 if ((c = tb[IFACE_ATTR_DHCPV4])) {
523 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0) {
524 if (config.main_dhcpv4)
525 iface->dhcpv4 = mode;
531 if ((c = tb[IFACE_ATTR_DHCPV6])) {
532 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
533 iface->dhcpv6 = mode;
538 if ((c = tb[IFACE_ATTR_NDP])) {
539 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
545 if ((c = tb[IFACE_ATTR_ROUTER])) {
546 struct blob_attr *cur;
549 blobmsg_for_each_attr(cur, c, rem) {
550 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
553 struct in_addr addr4;
554 if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
555 iface->dhcpv4_router = realloc(iface->dhcpv4_router,
556 (++iface->dhcpv4_router_cnt) * sizeof(*iface->dhcpv4_router));
557 if (!iface->dhcpv4_router)
560 iface->dhcpv4_router[iface->dhcpv4_router_cnt - 1] = addr4;
566 if ((c = tb[IFACE_ATTR_DNS])) {
567 struct blob_attr *cur;
570 iface->always_rewrite_dns = true;
571 blobmsg_for_each_attr(cur, c, rem) {
572 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
575 struct in_addr addr4;
576 struct in6_addr addr6;
577 if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
578 iface->dhcpv4_dns = realloc(iface->dhcpv4_dns,
579 (++iface->dhcpv4_dns_cnt) * sizeof(*iface->dhcpv4_dns));
580 if (!iface->dhcpv4_dns)
583 iface->dhcpv4_dns[iface->dhcpv4_dns_cnt - 1] = addr4;
584 } else if (inet_pton(AF_INET6, blobmsg_get_string(cur), &addr6) == 1) {
585 iface->dns = realloc(iface->dns,
586 (++iface->dns_cnt) * sizeof(*iface->dns));
590 iface->dns[iface->dns_cnt - 1] = addr6;
596 if ((c = tb[IFACE_ATTR_DOMAIN])) {
597 struct blob_attr *cur;
600 blobmsg_for_each_attr(cur, c, rem) {
601 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
605 char *domain = blobmsg_get_string(cur);
606 size_t domainlen = strlen(domain);
607 if (domainlen > 0 && domain[domainlen - 1] == '.')
608 domain[domainlen - 1] = 0;
610 int len = dn_comp(domain, buf, sizeof(buf), NULL, NULL);
614 iface->search = realloc(iface->search, iface->search_len + len);
618 memcpy(&iface->search[iface->search_len], buf, len);
619 iface->search_len += len;
623 if ((c = tb[IFACE_ATTR_FILTER_CLASS])) {
624 iface->filter_class = realloc(iface->filter_class, blobmsg_data_len(c) + 1);
625 memcpy(iface->filter_class, blobmsg_get_string(c), blobmsg_data_len(c) + 1);
628 if ((c = tb[IFACE_ATTR_DHCPV4_FORCERECONF]))
629 iface->dhcpv4_forcereconf = blobmsg_get_bool(c);
631 if ((c = tb[IFACE_ATTR_DHCPV6_RAW])) {
632 iface->dhcpv6_raw_len = blobmsg_data_len(c) / 2;
633 iface->dhcpv6_raw = realloc(iface->dhcpv6_raw, iface->dhcpv6_raw_len);
634 odhcpd_unhexlify(iface->dhcpv6_raw, iface->dhcpv6_raw_len, blobmsg_get_string(c));
637 if ((c = tb[IFACE_ATTR_DHCPV6_ASSIGNALL]))
638 iface->dhcpv6_assignall = blobmsg_get_bool(c);
640 if ((c = tb[IFACE_ATTR_RA_DEFAULT]))
641 iface->default_router = blobmsg_get_u32(c);
643 if ((c = tb[IFACE_ATTR_RA_MANAGEMENT]))
644 iface->ra_managed = blobmsg_get_u32(c);
646 if ((c = tb[IFACE_ATTR_RA_REACHABLETIME])) {
647 uint32_t ra_reachabletime = blobmsg_get_u32(c);
648 if (ra_reachabletime > 3600000)
651 iface->ra_reachabletime = ra_reachabletime;
654 if ((c = tb[IFACE_ATTR_RA_RETRANSTIME])) {
655 uint32_t ra_retranstime = blobmsg_get_u32(c);
656 if (ra_retranstime > 60000)
659 iface->ra_retranstime = ra_retranstime;
662 if ((c = tb[IFACE_ATTR_RA_HOPLIMIT])) {
663 uint32_t ra_hoplimit = blobmsg_get_u32(c);
664 if (ra_hoplimit > 255)
667 iface->ra_hoplimit = ra_hoplimit;
670 if ((c = tb[IFACE_ATTR_RA_MTU])) {
671 uint32_t ra_mtu = blobmsg_get_u32(c);
672 if (ra_mtu < 1280 || ra_mtu > 65535)
675 iface->ra_mtu = ra_mtu;
678 if ((c = tb[IFACE_ATTR_RA_OFFLINK]))
679 iface->ra_not_onlink = blobmsg_get_bool(c);
681 if ((c = tb[IFACE_ATTR_RA_ADVROUTER]))
682 iface->ra_advrouter = blobmsg_get_bool(c);
684 if ((c = tb[IFACE_ATTR_RA_MININTERVAL]))
685 iface->ra_mininterval = blobmsg_get_u32(c);
687 if ((c = tb[IFACE_ATTR_RA_MAXINTERVAL]))
688 iface->ra_maxinterval = blobmsg_get_u32(c);
690 if ((c = tb[IFACE_ATTR_RA_LIFETIME]))
691 iface->ra_lifetime = blobmsg_get_u32(c);
693 if ((c = tb[IFACE_ATTR_RA_USELEASETIME]))
694 iface->ra_useleasetime = blobmsg_get_bool(c);
696 if ((c = tb[IFACE_ATTR_RA_PREFERENCE])) {
697 const char *prio = blobmsg_get_string(c);
699 if (!strcmp(prio, "high"))
700 iface->route_preference = 1;
701 else if (!strcmp(prio, "low"))
702 iface->route_preference = -1;
703 else if (!strcmp(prio, "medium") || !strcmp(prio, "default"))
704 iface->route_preference = 0;
709 if ((c = tb[IFACE_ATTR_PD_MANAGER]))
710 strncpy(iface->dhcpv6_pd_manager, blobmsg_get_string(c),
711 sizeof(iface->dhcpv6_pd_manager) - 1);
713 if ((c = tb[IFACE_ATTR_PD_CER]) &&
714 inet_pton(AF_INET6, blobmsg_get_string(c), &iface->dhcpv6_pd_cer) < 1)
717 if ((c = tb[IFACE_ATTR_NDPROXY_ROUTING]))
718 iface->learn_routes = blobmsg_get_bool(c);
720 if ((c = tb[IFACE_ATTR_NDPROXY_SLAVE]))
721 iface->external = blobmsg_get_bool(c);
726 close_interface(iface);
730 static int set_interface(struct uci_section *s)
732 blob_buf_init(&b, 0);
733 uci_to_blob(&b, s, &interface_attr_list);
735 return config_parse_interface(blob_data(b.head), blob_len(b.head), s->e.name, true);
738 void odhcpd_reload(void)
740 struct uci_context *uci = uci_alloc_context();
742 while (!list_empty(&leases))
743 free_lease(list_first_entry(&leases, struct lease, head));
745 struct interface *master = NULL, *i, *n;
750 list_for_each_entry(i, &interfaces, head)
753 struct uci_package *dhcp = NULL;
754 if (!uci_load(uci, "dhcp", &dhcp)) {
755 struct uci_element *e;
756 uci_foreach_element(&dhcp->sections, e) {
757 struct uci_section *s = uci_to_section(e);
758 if (!strcmp(s->type, "host"))
760 else if (!strcmp(s->type, "odhcpd"))
764 uci_foreach_element(&dhcp->sections, e) {
765 struct uci_section *s = uci_to_section(e);
766 if (!strcmp(s->type, "dhcp"))
771 if (config.dhcp_statefile) {
772 char *path = strdup(config.dhcp_statefile);
774 mkdir_p(dirname(path), 0755);
779 ubus_apply_network();
782 bool any_dhcpv6_slave = false, any_ra_slave = false, any_ndp_slave = false;
785 list_for_each_entry(i, &interfaces, head) {
789 if (i->dhcpv6 == MODE_HYBRID || i->dhcpv6 == MODE_RELAY)
790 any_dhcpv6_slave = true;
792 if (i->ra == MODE_HYBRID || i->ra == MODE_RELAY)
795 if (i->ndp == MODE_HYBRID || i->ndp == MODE_RELAY)
796 any_ndp_slave = true;
799 /* Evaluate hybrid mode for master */
800 list_for_each_entry(i, &interfaces, head) {
804 enum odhcpd_mode hybrid_mode = MODE_DISABLED;
806 if (!ubus_has_prefix(i->name, i->ifname))
807 hybrid_mode = MODE_RELAY;
810 if (i->dhcpv6 == MODE_HYBRID)
811 i->dhcpv6 = hybrid_mode;
813 if (i->dhcpv6 == MODE_RELAY && !any_dhcpv6_slave)
814 i->dhcpv6 = MODE_DISABLED;
816 if (i->ra == MODE_HYBRID)
819 if (i->ra == MODE_RELAY && !any_ra_slave)
820 i->ra = MODE_DISABLED;
822 if (i->ndp == MODE_HYBRID)
823 i->ndp = hybrid_mode;
825 if (i->ndp == MODE_RELAY && !any_ndp_slave)
826 i->ndp = MODE_DISABLED;
828 if (i->dhcpv6 == MODE_RELAY || i->ra == MODE_RELAY || i->ndp == MODE_RELAY)
833 list_for_each_entry_safe(i, n, &interfaces, head) {
835 /* Resolve hybrid mode */
836 if (i->dhcpv6 == MODE_HYBRID)
837 i->dhcpv6 = (master && master->dhcpv6 == MODE_RELAY) ?
838 MODE_RELAY : MODE_SERVER;
840 if (i->ra == MODE_HYBRID)
841 i->ra = (master && master->ra == MODE_RELAY) ?
842 MODE_RELAY : MODE_SERVER;
844 if (i->ndp == MODE_HYBRID)
845 i->ndp = (master && master->ndp == MODE_RELAY) ?
846 MODE_RELAY : MODE_DISABLED;
848 router_setup_interface(i, !i->ignore || i->ra != MODE_DISABLED);
849 dhcpv6_setup_interface(i, !i->ignore || i->dhcpv6 != MODE_DISABLED);
850 ndp_setup_interface(i, !i->ignore || i->ndp != MODE_DISABLED);
851 #ifdef DHCPV4_SUPPORT
852 dhcpv4_setup_interface(i, !i->ignore || i->dhcpv4 != MODE_DISABLED);
858 uci_unload(uci, dhcp);
859 uci_free_context(uci);
862 static void handle_signal(int signal)
866 if (signal == SIGHUP) {
867 if (write(reload_pipe[1], b, sizeof(b)) < 0) {}
872 static void reload_cb(struct uloop_fd *u, _unused unsigned int events)
875 if (read(u->fd, b, sizeof(b)) < 0) {}
880 static struct uloop_fd reload_fd = { .cb = reload_cb };
882 void odhcpd_run(void)
884 if (pipe2(reload_pipe, O_NONBLOCK | O_CLOEXEC) < 0) {}
886 reload_fd.fd = reload_pipe[0];
887 uloop_fd_add(&reload_fd, ULOOP_READ);
889 signal(SIGTERM, handle_signal);
890 signal(SIGINT, handle_signal);
891 signal(SIGHUP, handle_signal);
901 while (!list_empty(&interfaces))
902 close_interface(list_first_entry(&interfaces, struct interface, head));