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);
243 free(iface->ia_addr);
248 static int parse_mode(const char *mode)
250 if (!strcmp(mode, "disabled"))
251 return RELAYD_DISABLED;
252 else if (!strcmp(mode, "server"))
253 return RELAYD_SERVER;
254 else if (!strcmp(mode, "relay"))
256 else if (!strcmp(mode, "hybrid"))
257 return RELAYD_HYBRID;
262 static void set_config(struct uci_section *s)
264 struct blob_attr *tb[ODHCPD_ATTR_MAX], *c;
266 blob_buf_init(&b, 0);
267 uci_to_blob(&b, s, &odhcpd_attr_list);
268 blobmsg_parse(odhcpd_attrs, ODHCPD_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
270 if ((c = tb[ODHCPD_ATTR_LEGACY]))
271 config.legacy = blobmsg_get_bool(c);
273 if ((c = tb[ODHCPD_ATTR_MAINDHCP]))
274 config.main_dhcpv4 = blobmsg_get_bool(c);
276 if ((c = tb[ODHCPD_ATTR_LEASEFILE])) {
277 free(config.dhcp_statefile);
278 config.dhcp_statefile = strdup(blobmsg_get_string(c));
281 if ((c = tb[ODHCPD_ATTR_LEASETRIGGER])) {
282 free(config.dhcp_cb);
283 config.dhcp_cb = strdup(blobmsg_get_string(c));
286 if ((c = tb[ODHCPD_ATTR_LOGLEVEL])) {
287 int log_level = (blobmsg_get_u32(c) & LOG_PRIMASK);
289 if (config.log_level != log_level) {
290 config.log_level = log_level;
291 setlogmask(LOG_UPTO(config.log_level));
296 static double parse_leasetime(struct blob_attr *c) {
297 char *val = blobmsg_get_string(c), *endptr = NULL;
298 double time = strcmp(val, "infinite") ? strtod(val, &endptr) : UINT32_MAX;
300 if (time && endptr && endptr[0]) {
301 if (endptr[0] == 's')
303 else if (endptr[0] == 'm')
305 else if (endptr[0] == 'h')
307 else if (endptr[0] == 'd')
309 else if (endptr[0] == 'w')
310 time *= 7 * 24 * 3600;
324 static int set_lease(struct uci_section *s)
326 struct blob_attr *tb[LEASE_ATTR_MAX], *c;
328 blob_buf_init(&b, 0);
329 uci_to_blob(&b, s, &lease_attr_list);
330 blobmsg_parse(lease_attrs, LEASE_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
333 if ((c = tb[LEASE_ATTR_NAME]))
334 hostlen = blobmsg_data_len(c);
336 struct lease *lease = calloc(1, sizeof(*lease) + hostlen);
341 memcpy(lease->hostname, blobmsg_get_string(c), hostlen);
343 if ((c = tb[LEASE_ATTR_IP]))
344 if (inet_pton(AF_INET, blobmsg_get_string(c), &lease->ipaddr) < 0)
347 if ((c = tb[LEASE_ATTR_MAC]))
348 if (!ether_aton_r(blobmsg_get_string(c), &lease->mac))
351 if ((c = tb[LEASE_ATTR_DUID])) {
352 size_t duidlen = (blobmsg_data_len(c) - 1) / 2;
353 lease->duid = malloc(duidlen);
357 ssize_t len = odhcpd_unhexlify(lease->duid,
358 duidlen, blobmsg_get_string(c));
363 lease->duid_len = len;
366 if ((c = tb[LEASE_ATTR_HOSTID])) {
368 lease->hostid = strtoul(blobmsg_get_string(c), NULL, 16);
373 if ((c = tb[LEASE_ATTR_LEASETIME])) {
374 double time = parse_leasetime(c);
378 lease->dhcpv4_leasetime = time;
381 list_add(&lease->head, &leases);
391 int config_parse_interface(void *data, size_t len, const char *name, bool overwrite)
393 struct blob_attr *tb[IFACE_ATTR_MAX], *c;
394 bool get_addrs = false;
396 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb, data, len);
398 if (tb[IFACE_ATTR_INTERFACE])
399 name = blobmsg_get_string(tb[IFACE_ATTR_INTERFACE]);
404 struct interface *iface = get_interface(name);
408 iface = calloc_a(sizeof(*iface), &iface_name, strlen(name) + 1);
412 iface->name = strcpy(iface_name, name);
414 set_interface_defaults(iface);
416 list_add(&iface->head, &interfaces);
417 get_addrs = overwrite = true;
420 const char *ifname = NULL;
422 if ((c = tb[IFACE_ATTR_IFNAME]))
423 ifname = blobmsg_get_string(c);
424 else if ((c = tb[IFACE_ATTR_NETWORKID]))
425 ifname = blobmsg_get_string(c);
429 if (overwrite || !iface->ifname)
430 ifname = ubus_get_ifname(name);
433 if (!iface->ifname && !ifname)
438 iface->ifname = strdup(ifname);
444 if ((iface->ifindex = if_nametoindex(iface->ifname)) <= 0)
448 ssize_t len = odhcpd_get_interface_addresses(iface->ifindex,
449 true, &iface->ia_addr);
452 iface->ia_addr_len = len;
457 if ((c = tb[IFACE_ATTR_DYNAMICDHCP]))
458 iface->no_dynamic_dhcp = !blobmsg_get_bool(c);
460 if (overwrite && (c = tb[IFACE_ATTR_IGNORE]))
461 iface->ignore = blobmsg_get_bool(c);
463 if ((c = tb[IFACE_ATTR_LEASETIME])) {
464 double time = parse_leasetime(c);
468 iface->dhcpv4_leasetime = time;
471 if ((c = tb[IFACE_ATTR_START])) {
472 iface->dhcpv4_start.s_addr = htonl(blobmsg_get_u32(c));
474 if (config.main_dhcpv4 && config.legacy)
475 iface->dhcpv4 = RELAYD_SERVER;
478 if ((c = tb[IFACE_ATTR_LIMIT]))
479 iface->dhcpv4_end.s_addr = htonl(
480 ntohl(iface->dhcpv4_start.s_addr) + blobmsg_get_u32(c));
482 if ((c = tb[IFACE_ATTR_MASTER]))
483 iface->master = blobmsg_get_bool(c);
485 if (overwrite && (c = tb[IFACE_ATTR_UPSTREAM])) {
486 struct blob_attr *cur;
489 blobmsg_for_each_attr(cur, c, rem) {
490 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
493 iface->upstream = realloc(iface->upstream,
494 iface->upstream_len + blobmsg_data_len(cur));
495 if (!iface->upstream)
498 memcpy(iface->upstream + iface->upstream_len, blobmsg_get_string(cur), blobmsg_data_len(cur));
499 iface->upstream_len += blobmsg_data_len(cur);
504 if ((c = tb[IFACE_ATTR_RA])) {
505 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
511 if ((c = tb[IFACE_ATTR_DHCPV4])) {
512 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0) {
513 if (config.main_dhcpv4)
514 iface->dhcpv4 = mode;
520 if ((c = tb[IFACE_ATTR_DHCPV6])) {
521 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
522 iface->dhcpv6 = mode;
527 if ((c = tb[IFACE_ATTR_NDP])) {
528 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
534 if ((c = tb[IFACE_ATTR_ROUTER])) {
535 struct blob_attr *cur;
538 blobmsg_for_each_attr(cur, c, rem) {
539 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
542 struct in_addr addr4;
543 if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
544 iface->dhcpv4_router = realloc(iface->dhcpv4_router,
545 (++iface->dhcpv4_router_cnt) * sizeof(*iface->dhcpv4_router));
546 if (!iface->dhcpv4_router)
549 iface->dhcpv4_router[iface->dhcpv4_router_cnt - 1] = addr4;
555 if ((c = tb[IFACE_ATTR_DNS])) {
556 struct blob_attr *cur;
559 iface->always_rewrite_dns = true;
560 blobmsg_for_each_attr(cur, c, rem) {
561 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
564 struct in_addr addr4;
565 struct in6_addr addr6;
566 if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
567 iface->dhcpv4_dns = realloc(iface->dhcpv4_dns,
568 (++iface->dhcpv4_dns_cnt) * sizeof(*iface->dhcpv4_dns));
569 if (!iface->dhcpv4_dns)
572 iface->dhcpv4_dns[iface->dhcpv4_dns_cnt - 1] = addr4;
573 } else if (inet_pton(AF_INET6, blobmsg_get_string(cur), &addr6) == 1) {
574 iface->dns = realloc(iface->dns,
575 (++iface->dns_cnt) * sizeof(*iface->dns));
579 iface->dns[iface->dns_cnt - 1] = addr6;
585 if ((c = tb[IFACE_ATTR_DOMAIN])) {
586 struct blob_attr *cur;
589 blobmsg_for_each_attr(cur, c, rem) {
590 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
594 char *domain = blobmsg_get_string(cur);
595 size_t domainlen = strlen(domain);
596 if (domainlen > 0 && domain[domainlen - 1] == '.')
597 domain[domainlen - 1] = 0;
599 int len = dn_comp(domain, buf, sizeof(buf), NULL, NULL);
603 iface->search = realloc(iface->search, iface->search_len + len);
607 memcpy(&iface->search[iface->search_len], buf, len);
608 iface->search_len += len;
612 if ((c = tb[IFACE_ATTR_FILTER_CLASS])) {
613 iface->filter_class = realloc(iface->filter_class, blobmsg_data_len(c) + 1);
614 memcpy(iface->filter_class, blobmsg_get_string(c), blobmsg_data_len(c) + 1);
617 if ((c = tb[IFACE_ATTR_DHCPV6_RAW])) {
618 iface->dhcpv6_raw_len = blobmsg_data_len(c) / 2;
619 iface->dhcpv6_raw = realloc(iface->dhcpv6_raw, iface->dhcpv6_raw_len);
620 odhcpd_unhexlify(iface->dhcpv6_raw, iface->dhcpv6_raw_len, blobmsg_get_string(c));
623 if ((c = tb[IFACE_ATTR_DHCPV6_ASSIGNALL]))
624 iface->dhcpv6_assignall = blobmsg_get_bool(c);
626 if ((c = tb[IFACE_ATTR_RA_DEFAULT]))
627 iface->default_router = blobmsg_get_u32(c);
629 if ((c = tb[IFACE_ATTR_RA_MANAGEMENT]))
630 iface->ra_managed = blobmsg_get_u32(c);
632 if ((c = tb[IFACE_ATTR_RA_REACHABLETIME])) {
633 uint32_t ra_reachabletime = blobmsg_get_u32(c);
634 if (ra_reachabletime > 3600000)
637 iface->ra_reachabletime = ra_reachabletime;
640 if ((c = tb[IFACE_ATTR_RA_RETRANSTIME])) {
641 uint32_t ra_retranstime = blobmsg_get_u32(c);
642 if (ra_retranstime > 60000)
645 iface->ra_retranstime = ra_retranstime;
648 if ((c = tb[IFACE_ATTR_RA_HOPLIMIT])) {
649 uint32_t ra_hoplimit = blobmsg_get_u32(c);
650 if (ra_hoplimit > 255)
653 iface->ra_hoplimit = ra_hoplimit;
656 if ((c = tb[IFACE_ATTR_RA_MTU])) {
657 uint32_t ra_mtu = blobmsg_get_u32(c);
658 if (ra_mtu < 1280 || ra_mtu > 65535)
661 iface->ra_mtu = ra_mtu;
664 if ((c = tb[IFACE_ATTR_RA_OFFLINK]))
665 iface->ra_not_onlink = blobmsg_get_bool(c);
667 if ((c = tb[IFACE_ATTR_RA_ADVROUTER]))
668 iface->ra_advrouter = blobmsg_get_bool(c);
670 if ((c = tb[IFACE_ATTR_RA_MININTERVAL]))
671 iface->ra_mininterval = blobmsg_get_u32(c);
673 if ((c = tb[IFACE_ATTR_RA_MAXINTERVAL]))
674 iface->ra_maxinterval = blobmsg_get_u32(c);
676 if ((c = tb[IFACE_ATTR_RA_LIFETIME]))
677 iface->ra_lifetime = blobmsg_get_u32(c);
679 if ((c = tb[IFACE_ATTR_RA_USELEASETIME]))
680 iface->ra_useleasetime = blobmsg_get_bool(c);
682 if ((c = tb[IFACE_ATTR_RA_PREFERENCE])) {
683 const char *prio = blobmsg_get_string(c);
685 if (!strcmp(prio, "high"))
686 iface->route_preference = 1;
687 else if (!strcmp(prio, "low"))
688 iface->route_preference = -1;
689 else if (!strcmp(prio, "medium") || !strcmp(prio, "default"))
690 iface->route_preference = 0;
695 if ((c = tb[IFACE_ATTR_PD_MANAGER]))
696 strncpy(iface->dhcpv6_pd_manager, blobmsg_get_string(c),
697 sizeof(iface->dhcpv6_pd_manager) - 1);
699 if ((c = tb[IFACE_ATTR_PD_CER]) &&
700 inet_pton(AF_INET6, blobmsg_get_string(c), &iface->dhcpv6_pd_cer) < 1)
703 if ((c = tb[IFACE_ATTR_NDPROXY_ROUTING]))
704 iface->learn_routes = blobmsg_get_bool(c);
706 if ((c = tb[IFACE_ATTR_NDPROXY_SLAVE]))
707 iface->external = blobmsg_get_bool(c);
712 close_interface(iface);
716 static int set_interface(struct uci_section *s)
718 blob_buf_init(&b, 0);
719 uci_to_blob(&b, s, &interface_attr_list);
721 return config_parse_interface(blob_data(b.head), blob_len(b.head), s->e.name, true);
724 void odhcpd_reload(void)
726 struct uci_context *uci = uci_alloc_context();
728 while (!list_empty(&leases))
729 free_lease(list_first_entry(&leases, struct lease, head));
731 struct interface *master = NULL, *i, *n;
736 list_for_each_entry(i, &interfaces, head)
739 struct uci_package *dhcp = NULL;
740 if (!uci_load(uci, "dhcp", &dhcp)) {
741 struct uci_element *e;
742 uci_foreach_element(&dhcp->sections, e) {
743 struct uci_section *s = uci_to_section(e);
744 if (!strcmp(s->type, "host"))
746 else if (!strcmp(s->type, "odhcpd"))
750 uci_foreach_element(&dhcp->sections, e) {
751 struct uci_section *s = uci_to_section(e);
752 if (!strcmp(s->type, "dhcp"))
757 if (config.dhcp_statefile) {
758 char *path = strdup(config.dhcp_statefile);
760 mkdir_p(dirname(path), 0755);
765 ubus_apply_network();
768 bool any_dhcpv6_slave = false, any_ra_slave = false, any_ndp_slave = false;
771 list_for_each_entry(i, &interfaces, head) {
775 if (i->dhcpv6 == RELAYD_HYBRID || i->dhcpv6 == RELAYD_RELAY)
776 any_dhcpv6_slave = true;
778 if (i->ra == RELAYD_HYBRID || i->ra == RELAYD_RELAY)
781 if (i->ndp == RELAYD_HYBRID || i->ndp == RELAYD_RELAY)
782 any_ndp_slave = true;
785 /* Evaluate hybrid mode for master */
786 list_for_each_entry(i, &interfaces, head) {
790 enum odhcpd_mode hybrid_mode = RELAYD_DISABLED;
792 if (!ubus_has_prefix(i->name, i->ifname))
793 hybrid_mode = RELAYD_RELAY;
796 if (i->dhcpv6 == RELAYD_HYBRID)
797 i->dhcpv6 = hybrid_mode;
799 if (i->dhcpv6 == RELAYD_RELAY && !any_dhcpv6_slave)
800 i->dhcpv6 = RELAYD_DISABLED;
802 if (i->ra == RELAYD_HYBRID)
805 if (i->ra == RELAYD_RELAY && !any_ra_slave)
806 i->ra = RELAYD_DISABLED;
808 if (i->ndp == RELAYD_HYBRID)
809 i->ndp = hybrid_mode;
811 if (i->ndp == RELAYD_RELAY && !any_ndp_slave)
812 i->ndp = RELAYD_DISABLED;
814 if (i->dhcpv6 == RELAYD_RELAY || i->ra == RELAYD_RELAY || i->ndp == RELAYD_RELAY)
819 list_for_each_entry_safe(i, n, &interfaces, head) {
821 /* Resolve hybrid mode */
822 if (i->dhcpv6 == RELAYD_HYBRID)
823 i->dhcpv6 = (master && master->dhcpv6 == RELAYD_RELAY) ?
824 RELAYD_RELAY : RELAYD_SERVER;
826 if (i->ra == RELAYD_HYBRID)
827 i->ra = (master && master->ra == RELAYD_RELAY) ?
828 RELAYD_RELAY : RELAYD_SERVER;
830 if (i->ndp == RELAYD_HYBRID)
831 i->ndp = (master && master->ndp == RELAYD_RELAY) ?
832 RELAYD_RELAY : RELAYD_DISABLED;
834 setup_router_interface(i, !i->ignore || i->ra != RELAYD_DISABLED);
835 setup_dhcpv6_interface(i, !i->ignore || i->dhcpv6 != RELAYD_DISABLED);
836 setup_ndp_interface(i, !i->ignore || i->ndp != RELAYD_DISABLED);
837 setup_dhcpv4_interface(i, !i->ignore || i->dhcpv4 != RELAYD_DISABLED);
842 uci_unload(uci, dhcp);
843 uci_free_context(uci);
846 static void handle_signal(int signal)
850 if (signal == SIGHUP) {
851 if (write(reload_pipe[1], b, sizeof(b)) < 0) {}
856 static void reload_cb(struct uloop_fd *u, _unused unsigned int events)
859 if (read(u->fd, b, sizeof(b)) < 0) {}
864 static struct uloop_fd reload_fd = { .cb = reload_cb };
866 void odhcpd_run(void)
868 if (pipe2(reload_pipe, O_NONBLOCK | O_CLOEXEC) < 0) {}
870 reload_fd.fd = reload_pipe[0];
871 uloop_fd_add(&reload_fd, ULOOP_READ);
873 signal(SIGTERM, handle_signal);
874 signal(SIGINT, handle_signal);
875 signal(SIGHUP, handle_signal);
885 while (!list_empty(&interfaces))
886 close_interface(list_first_entry(&interfaces, struct interface, head));