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,
50 IFACE_ATTR_RA_DEFAULT,
51 IFACE_ATTR_RA_MANAGEMENT,
52 IFACE_ATTR_RA_OFFLINK,
53 IFACE_ATTR_RA_PREFERENCE,
54 IFACE_ATTR_RA_ADVROUTER,
55 IFACE_ATTR_RA_MININTERVAL,
56 IFACE_ATTR_RA_MAXINTERVAL,
57 IFACE_ATTR_RA_LIFETIME,
58 IFACE_ATTR_RA_USELEASETIME,
59 IFACE_ATTR_RA_REACHABLETIME,
60 IFACE_ATTR_RA_RETRANSTIME,
61 IFACE_ATTR_RA_HOPLIMIT,
64 IFACE_ATTR_PD_MANAGER,
66 IFACE_ATTR_NDPROXY_ROUTING,
67 IFACE_ATTR_NDPROXY_SLAVE,
68 IFACE_ATTR_PREFIX_FILTER,
72 static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
73 [IFACE_ATTR_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
74 [IFACE_ATTR_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
75 [IFACE_ATTR_NETWORKID] = { .name = "networkid", .type = BLOBMSG_TYPE_STRING },
76 [IFACE_ATTR_DYNAMICDHCP] = { .name = "dynamicdhcp", .type = BLOBMSG_TYPE_BOOL },
77 [IFACE_ATTR_IGNORE] = { .name = "ignore", .type = BLOBMSG_TYPE_BOOL },
78 [IFACE_ATTR_LEASETIME] = { .name = "leasetime", .type = BLOBMSG_TYPE_STRING },
79 [IFACE_ATTR_START] = { .name = "start", .type = BLOBMSG_TYPE_INT32 },
80 [IFACE_ATTR_LIMIT] = { .name = "limit", .type = BLOBMSG_TYPE_INT32 },
81 [IFACE_ATTR_MASTER] = { .name = "master", .type = BLOBMSG_TYPE_BOOL },
82 [IFACE_ATTR_UPSTREAM] = { .name = "upstream", .type = BLOBMSG_TYPE_ARRAY },
83 [IFACE_ATTR_RA] = { .name = "ra", .type = BLOBMSG_TYPE_STRING },
84 [IFACE_ATTR_DHCPV4] = { .name = "dhcpv4", .type = BLOBMSG_TYPE_STRING },
85 [IFACE_ATTR_DHCPV6] = { .name = "dhcpv6", .type = BLOBMSG_TYPE_STRING },
86 [IFACE_ATTR_NDP] = { .name = "ndp", .type = BLOBMSG_TYPE_STRING },
87 [IFACE_ATTR_ROUTER] = { .name = "router", .type = BLOBMSG_TYPE_ARRAY },
88 [IFACE_ATTR_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
89 [IFACE_ATTR_DOMAIN] = { .name = "domain", .type = BLOBMSG_TYPE_ARRAY },
90 [IFACE_ATTR_FILTER_CLASS] = { .name = "filter_class", .type = BLOBMSG_TYPE_STRING },
91 [IFACE_ATTR_DHCPV4_FORCERECONF] = { .name = "dhcpv4_forcereconf", .type = BLOBMSG_TYPE_BOOL },
92 [IFACE_ATTR_DHCPV6_RAW] = { .name = "dhcpv6_raw", .type = BLOBMSG_TYPE_STRING },
93 [IFACE_ATTR_DHCPV6_ASSIGNALL] = { .name ="dhcpv6_assignall", .type = BLOBMSG_TYPE_BOOL },
94 [IFACE_ATTR_DHCPV6_PD] = { .name = "dhcpv6_pd", .type = BLOBMSG_TYPE_BOOL },
95 [IFACE_ATTR_DHCPV6_NA] = { .name = "dhcpv6_na", .type = BLOBMSG_TYPE_BOOL },
96 [IFACE_ATTR_PD_MANAGER] = { .name = "pd_manager", .type = BLOBMSG_TYPE_STRING },
97 [IFACE_ATTR_PD_CER] = { .name = "pd_cer", .type = BLOBMSG_TYPE_STRING },
98 [IFACE_ATTR_RA_DEFAULT] = { .name = "ra_default", .type = BLOBMSG_TYPE_INT32 },
99 [IFACE_ATTR_RA_MANAGEMENT] = { .name = "ra_management", .type = BLOBMSG_TYPE_INT32 },
100 [IFACE_ATTR_RA_OFFLINK] = { .name = "ra_offlink", .type = BLOBMSG_TYPE_BOOL },
101 [IFACE_ATTR_RA_PREFERENCE] = { .name = "ra_preference", .type = BLOBMSG_TYPE_STRING },
102 [IFACE_ATTR_RA_ADVROUTER] = { .name = "ra_advrouter", .type = BLOBMSG_TYPE_BOOL },
103 [IFACE_ATTR_RA_MININTERVAL] = { .name = "ra_mininterval", .type = BLOBMSG_TYPE_INT32 },
104 [IFACE_ATTR_RA_MAXINTERVAL] = { .name = "ra_maxinterval", .type = BLOBMSG_TYPE_INT32 },
105 [IFACE_ATTR_RA_LIFETIME] = { .name = "ra_lifetime", .type = BLOBMSG_TYPE_INT32 },
106 [IFACE_ATTR_RA_USELEASETIME] = { .name = "ra_useleasetime", .type = BLOBMSG_TYPE_BOOL },
107 [IFACE_ATTR_RA_REACHABLETIME] = { .name = "ra_reachabletime", .type = BLOBMSG_TYPE_INT32 },
108 [IFACE_ATTR_RA_RETRANSTIME] = { .name = "ra_retranstime", .type = BLOBMSG_TYPE_INT32 },
109 [IFACE_ATTR_RA_HOPLIMIT] = { .name = "ra_hoplimit", .type = BLOBMSG_TYPE_INT32 },
110 [IFACE_ATTR_RA_MTU] = { .name = "ra_mtu", .type = BLOBMSG_TYPE_INT32 },
111 [IFACE_ATTR_RA_DNS] = { .name = "ra_dns", .type = BLOBMSG_TYPE_BOOL },
112 [IFACE_ATTR_NDPROXY_ROUTING] = { .name = "ndproxy_routing", .type = BLOBMSG_TYPE_BOOL },
113 [IFACE_ATTR_NDPROXY_SLAVE] = { .name = "ndproxy_slave", .type = BLOBMSG_TYPE_BOOL },
114 [IFACE_ATTR_PREFIX_FILTER] = { .name = "prefix_filter", .type = BLOBMSG_TYPE_STRING },
117 static const struct uci_blob_param_info iface_attr_info[IFACE_ATTR_MAX] = {
118 [IFACE_ATTR_UPSTREAM] = { .type = BLOBMSG_TYPE_STRING },
119 [IFACE_ATTR_DNS] = { .type = BLOBMSG_TYPE_STRING },
120 [IFACE_ATTR_DOMAIN] = { .type = BLOBMSG_TYPE_STRING },
123 const struct uci_blob_param_list interface_attr_list = {
124 .n_params = IFACE_ATTR_MAX,
125 .params = iface_attrs,
126 .info = iface_attr_info,
134 LEASE_ATTR_LEASETIME,
139 static const struct blobmsg_policy lease_attrs[LEASE_ATTR_MAX] = {
140 [LEASE_ATTR_IP] = { .name = "ip", .type = BLOBMSG_TYPE_STRING },
141 [LEASE_ATTR_MAC] = { .name = "mac", .type = BLOBMSG_TYPE_STRING },
142 [LEASE_ATTR_DUID] = { .name = "duid", .type = BLOBMSG_TYPE_STRING },
143 [LEASE_ATTR_HOSTID] = { .name = "hostid", .type = BLOBMSG_TYPE_STRING },
144 [LEASE_ATTR_LEASETIME] = { .name = "leasetime", .type = BLOBMSG_TYPE_STRING },
145 [LEASE_ATTR_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
148 const struct uci_blob_param_list lease_attr_list = {
149 .n_params = LEASE_ATTR_MAX,
150 .params = lease_attrs,
155 ODHCPD_ATTR_MAINDHCP,
156 ODHCPD_ATTR_LEASEFILE,
157 ODHCPD_ATTR_LEASETRIGGER,
158 ODHCPD_ATTR_LOGLEVEL,
162 static const struct blobmsg_policy odhcpd_attrs[ODHCPD_ATTR_MAX] = {
163 [ODHCPD_ATTR_LEGACY] = { .name = "legacy", .type = BLOBMSG_TYPE_BOOL },
164 [ODHCPD_ATTR_MAINDHCP] = { .name = "maindhcp", .type = BLOBMSG_TYPE_BOOL },
165 [ODHCPD_ATTR_LEASEFILE] = { .name = "leasefile", .type = BLOBMSG_TYPE_STRING },
166 [ODHCPD_ATTR_LEASETRIGGER] = { .name = "leasetrigger", .type = BLOBMSG_TYPE_STRING },
167 [ODHCPD_ATTR_LOGLEVEL] = { .name = "loglevel", .type = BLOBMSG_TYPE_INT32 },
170 const struct uci_blob_param_list odhcpd_attr_list = {
171 .n_params = ODHCPD_ATTR_MAX,
172 .params = odhcpd_attrs,
175 static int mkdir_p(char *dir, mode_t mask)
177 char *l = strrchr(dir, '/');
185 if (mkdir_p(dir, mask))
190 ret = mkdir(dir, mask);
191 if (ret && errno == EEXIST)
195 syslog(LOG_ERR, "mkdir(%s, %d) failed: %m\n", dir, mask);
200 static void free_lease(struct lease *l)
209 static struct interface* get_interface(const char *name)
212 list_for_each_entry(c, &interfaces, head)
213 if (!strcmp(c->name, name))
218 static void set_interface_defaults(struct interface *iface)
220 iface->learn_routes = 1;
221 iface->dhcpv4_leasetime = 43200;
222 iface->dhcpv6_assignall = true;
223 iface->dhcpv6_pd = true;
224 iface->dhcpv6_na = true;
225 iface->ra_managed = RA_MANAGED_MFLAG;
226 iface->ra_maxinterval = 600;
227 iface->ra_mininterval = iface->ra_maxinterval/3;
228 iface->ra_lifetime = -1;
229 iface->ra_dns = true;
232 static void clean_interface(struct interface *iface)
236 free(iface->upstream);
237 free(iface->dhcpv4_router);
238 free(iface->dhcpv4_dns);
239 free(iface->dhcpv6_raw);
240 free(iface->filter_class);
241 memset(&iface->ra, 0, sizeof(*iface) - offsetof(struct interface, ra));
242 set_interface_defaults(iface);
245 static void close_interface(struct interface *iface)
247 if (iface->head.next)
248 list_del(&iface->head);
250 router_setup_interface(iface, false);
251 dhcpv6_setup_interface(iface, false);
252 ndp_setup_interface(iface, false);
253 #ifdef DHCPV4_SUPPORT
254 dhcpv4_setup_interface(iface, false);
257 clean_interface(iface);
264 static int parse_mode(const char *mode)
266 if (!strcmp(mode, "disabled"))
267 return MODE_DISABLED;
268 else if (!strcmp(mode, "server"))
270 else if (!strcmp(mode, "relay"))
272 else if (!strcmp(mode, "hybrid"))
278 static void set_config(struct uci_section *s)
280 struct blob_attr *tb[ODHCPD_ATTR_MAX], *c;
282 blob_buf_init(&b, 0);
283 uci_to_blob(&b, s, &odhcpd_attr_list);
284 blobmsg_parse(odhcpd_attrs, ODHCPD_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
286 if ((c = tb[ODHCPD_ATTR_LEGACY]))
287 config.legacy = blobmsg_get_bool(c);
289 if ((c = tb[ODHCPD_ATTR_MAINDHCP]))
290 config.main_dhcpv4 = blobmsg_get_bool(c);
292 if ((c = tb[ODHCPD_ATTR_LEASEFILE])) {
293 free(config.dhcp_statefile);
294 config.dhcp_statefile = strdup(blobmsg_get_string(c));
297 if ((c = tb[ODHCPD_ATTR_LEASETRIGGER])) {
298 free(config.dhcp_cb);
299 config.dhcp_cb = strdup(blobmsg_get_string(c));
302 if ((c = tb[ODHCPD_ATTR_LOGLEVEL])) {
303 int log_level = (blobmsg_get_u32(c) & LOG_PRIMASK);
305 if (config.log_level != log_level) {
306 config.log_level = log_level;
307 setlogmask(LOG_UPTO(config.log_level));
312 static double parse_leasetime(struct blob_attr *c) {
313 char *val = blobmsg_get_string(c), *endptr = NULL;
314 double time = strcmp(val, "infinite") ? strtod(val, &endptr) : UINT32_MAX;
316 if (time && endptr && endptr[0]) {
317 if (endptr[0] == 's')
319 else if (endptr[0] == 'm')
321 else if (endptr[0] == 'h')
323 else if (endptr[0] == 'd')
325 else if (endptr[0] == 'w')
326 time *= 7 * 24 * 3600;
340 static int set_lease(struct uci_section *s)
342 struct blob_attr *tb[LEASE_ATTR_MAX], *c;
344 blob_buf_init(&b, 0);
345 uci_to_blob(&b, s, &lease_attr_list);
346 blobmsg_parse(lease_attrs, LEASE_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
349 if ((c = tb[LEASE_ATTR_NAME]))
350 hostlen = blobmsg_data_len(c);
352 struct lease *lease = calloc(1, sizeof(*lease) + hostlen);
357 memcpy(lease->hostname, blobmsg_get_string(c), hostlen);
358 if (!odhcpd_valid_hostname(lease->hostname))
362 if ((c = tb[LEASE_ATTR_IP]))
363 if (inet_pton(AF_INET, blobmsg_get_string(c), &lease->ipaddr) < 0)
366 if ((c = tb[LEASE_ATTR_MAC]))
367 if (!ether_aton_r(blobmsg_get_string(c), &lease->mac))
370 if ((c = tb[LEASE_ATTR_DUID])) {
371 size_t duidlen = (blobmsg_data_len(c) - 1) / 2;
372 lease->duid = malloc(duidlen);
376 ssize_t len = odhcpd_unhexlify(lease->duid,
377 duidlen, blobmsg_get_string(c));
382 lease->duid_len = len;
385 if ((c = tb[LEASE_ATTR_HOSTID])) {
387 lease->hostid = strtoul(blobmsg_get_string(c), NULL, 16);
392 if ((c = tb[LEASE_ATTR_LEASETIME])) {
393 double time = parse_leasetime(c);
397 lease->dhcpv4_leasetime = time;
400 list_add(&lease->head, &leases);
410 int config_parse_interface(void *data, size_t len, const char *name, bool overwrite)
412 struct blob_attr *tb[IFACE_ATTR_MAX], *c;
413 bool get_addrs = false;
415 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb, data, len);
417 if (tb[IFACE_ATTR_INTERFACE])
418 name = blobmsg_get_string(tb[IFACE_ATTR_INTERFACE]);
423 struct interface *iface = get_interface(name);
427 iface = calloc_a(sizeof(*iface), &iface_name, strlen(name) + 1);
431 iface->name = strcpy(iface_name, name);
433 set_interface_defaults(iface);
435 list_add(&iface->head, &interfaces);
436 get_addrs = overwrite = true;
439 const char *ifname = NULL;
441 if ((c = tb[IFACE_ATTR_IFNAME]))
442 ifname = blobmsg_get_string(c);
443 else if ((c = tb[IFACE_ATTR_NETWORKID]))
444 ifname = blobmsg_get_string(c);
448 if (overwrite || !iface->ifname)
449 ifname = ubus_get_ifname(name);
452 if (!iface->ifname && !ifname)
457 iface->ifname = strdup(ifname);
462 if (!iface->ifindex &&
463 (iface->ifindex = if_nametoindex(iface->ifname)) <= 0)
468 ssize_t len = netlink_get_interface_addrs(iface->ifindex,
469 true, &iface->addr6);
472 iface->addr6_len = len;
474 len = netlink_get_interface_addrs(iface->ifindex,
475 false, &iface->addr4);
477 iface->addr4_len = len;
482 if ((c = tb[IFACE_ATTR_DYNAMICDHCP]))
483 iface->no_dynamic_dhcp = !blobmsg_get_bool(c);
485 if (overwrite && (c = tb[IFACE_ATTR_IGNORE]))
486 iface->ignore = blobmsg_get_bool(c);
488 if ((c = tb[IFACE_ATTR_LEASETIME])) {
489 double time = parse_leasetime(c);
493 iface->dhcpv4_leasetime = time;
496 if ((c = tb[IFACE_ATTR_START])) {
497 iface->dhcpv4_start.s_addr = htonl(blobmsg_get_u32(c));
499 if (config.main_dhcpv4 && config.legacy)
500 iface->dhcpv4 = MODE_SERVER;
503 if ((c = tb[IFACE_ATTR_LIMIT]))
504 iface->dhcpv4_end.s_addr = htonl(
505 ntohl(iface->dhcpv4_start.s_addr) + blobmsg_get_u32(c));
507 if ((c = tb[IFACE_ATTR_MASTER]))
508 iface->master = blobmsg_get_bool(c);
510 if (overwrite && (c = tb[IFACE_ATTR_UPSTREAM])) {
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 iface->upstream = realloc(iface->upstream,
519 iface->upstream_len + blobmsg_data_len(cur));
520 if (!iface->upstream)
523 memcpy(iface->upstream + iface->upstream_len, blobmsg_get_string(cur), blobmsg_data_len(cur));
524 iface->upstream_len += blobmsg_data_len(cur);
529 if ((c = tb[IFACE_ATTR_RA])) {
530 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
536 if ((c = tb[IFACE_ATTR_DHCPV4])) {
537 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0) {
538 if (config.main_dhcpv4)
539 iface->dhcpv4 = mode;
545 if ((c = tb[IFACE_ATTR_DHCPV6])) {
546 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
547 iface->dhcpv6 = mode;
552 if ((c = tb[IFACE_ATTR_NDP])) {
553 if ((mode = parse_mode(blobmsg_get_string(c))) >= 0)
559 if ((c = tb[IFACE_ATTR_ROUTER])) {
560 struct blob_attr *cur;
563 blobmsg_for_each_attr(cur, c, rem) {
564 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
567 struct in_addr addr4;
568 if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
569 iface->dhcpv4_router = realloc(iface->dhcpv4_router,
570 (++iface->dhcpv4_router_cnt) * sizeof(*iface->dhcpv4_router));
571 if (!iface->dhcpv4_router)
574 iface->dhcpv4_router[iface->dhcpv4_router_cnt - 1] = addr4;
580 if ((c = tb[IFACE_ATTR_DNS])) {
581 struct blob_attr *cur;
584 iface->always_rewrite_dns = true;
585 blobmsg_for_each_attr(cur, c, rem) {
586 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
589 struct in_addr addr4;
590 struct in6_addr addr6;
591 if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) {
592 if (addr4.s_addr == INADDR_ANY)
595 iface->dhcpv4_dns = realloc(iface->dhcpv4_dns,
596 (++iface->dhcpv4_dns_cnt) * sizeof(*iface->dhcpv4_dns));
597 if (!iface->dhcpv4_dns)
600 iface->dhcpv4_dns[iface->dhcpv4_dns_cnt - 1] = addr4;
601 } else if (inet_pton(AF_INET6, blobmsg_get_string(cur), &addr6) == 1) {
602 if (IN6_IS_ADDR_UNSPECIFIED(&addr6))
605 iface->dns = realloc(iface->dns,
606 (++iface->dns_cnt) * sizeof(*iface->dns));
610 iface->dns[iface->dns_cnt - 1] = addr6;
616 if ((c = tb[IFACE_ATTR_DOMAIN])) {
617 struct blob_attr *cur;
620 blobmsg_for_each_attr(cur, c, rem) {
621 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING || !blobmsg_check_attr(cur, false))
625 char *domain = blobmsg_get_string(cur);
626 size_t domainlen = strlen(domain);
627 if (domainlen > 0 && domain[domainlen - 1] == '.')
628 domain[domainlen - 1] = 0;
630 int len = dn_comp(domain, buf, sizeof(buf), NULL, NULL);
634 iface->search = realloc(iface->search, iface->search_len + len);
638 memcpy(&iface->search[iface->search_len], buf, len);
639 iface->search_len += len;
643 if ((c = tb[IFACE_ATTR_FILTER_CLASS])) {
644 iface->filter_class = realloc(iface->filter_class, blobmsg_data_len(c) + 1);
645 memcpy(iface->filter_class, blobmsg_get_string(c), blobmsg_data_len(c) + 1);
648 if ((c = tb[IFACE_ATTR_DHCPV4_FORCERECONF]))
649 iface->dhcpv4_forcereconf = blobmsg_get_bool(c);
651 if ((c = tb[IFACE_ATTR_DHCPV6_RAW])) {
652 iface->dhcpv6_raw_len = blobmsg_data_len(c) / 2;
653 iface->dhcpv6_raw = realloc(iface->dhcpv6_raw, iface->dhcpv6_raw_len);
654 odhcpd_unhexlify(iface->dhcpv6_raw, iface->dhcpv6_raw_len, blobmsg_get_string(c));
657 if ((c = tb[IFACE_ATTR_DHCPV6_ASSIGNALL]))
658 iface->dhcpv6_assignall = blobmsg_get_bool(c);
660 if ((c = tb[IFACE_ATTR_DHCPV6_PD]))
661 iface->dhcpv6_pd = blobmsg_get_bool(c);
663 if ((c = tb[IFACE_ATTR_DHCPV6_NA]))
664 iface->dhcpv6_na = blobmsg_get_bool(c);
666 if ((c = tb[IFACE_ATTR_RA_DEFAULT]))
667 iface->default_router = blobmsg_get_u32(c);
669 if ((c = tb[IFACE_ATTR_RA_MANAGEMENT]))
670 iface->ra_managed = blobmsg_get_u32(c);
672 if ((c = tb[IFACE_ATTR_RA_REACHABLETIME])) {
673 uint32_t ra_reachabletime = blobmsg_get_u32(c);
674 if (ra_reachabletime > 3600000)
677 iface->ra_reachabletime = ra_reachabletime;
680 if ((c = tb[IFACE_ATTR_RA_RETRANSTIME])) {
681 uint32_t ra_retranstime = blobmsg_get_u32(c);
682 if (ra_retranstime > 60000)
685 iface->ra_retranstime = ra_retranstime;
688 if ((c = tb[IFACE_ATTR_RA_HOPLIMIT])) {
689 uint32_t ra_hoplimit = blobmsg_get_u32(c);
690 if (ra_hoplimit > 255)
693 iface->ra_hoplimit = ra_hoplimit;
696 if ((c = tb[IFACE_ATTR_RA_MTU])) {
697 uint32_t ra_mtu = blobmsg_get_u32(c);
698 if (ra_mtu < 1280 || ra_mtu > 65535)
701 iface->ra_mtu = ra_mtu;
704 if ((c = tb[IFACE_ATTR_RA_OFFLINK]))
705 iface->ra_not_onlink = blobmsg_get_bool(c);
707 if ((c = tb[IFACE_ATTR_RA_ADVROUTER]))
708 iface->ra_advrouter = blobmsg_get_bool(c);
710 if ((c = tb[IFACE_ATTR_RA_MININTERVAL]))
711 iface->ra_mininterval = blobmsg_get_u32(c);
713 if ((c = tb[IFACE_ATTR_RA_MAXINTERVAL]))
714 iface->ra_maxinterval = blobmsg_get_u32(c);
716 if ((c = tb[IFACE_ATTR_RA_LIFETIME]))
717 iface->ra_lifetime = blobmsg_get_u32(c);
719 if ((c = tb[IFACE_ATTR_RA_USELEASETIME]))
720 iface->ra_useleasetime = blobmsg_get_bool(c);
722 if ((c = tb[IFACE_ATTR_RA_DNS]))
723 iface->ra_dns = blobmsg_get_bool(c);
725 if ((c = tb[IFACE_ATTR_RA_PREFERENCE])) {
726 const char *prio = blobmsg_get_string(c);
728 if (!strcmp(prio, "high"))
729 iface->route_preference = 1;
730 else if (!strcmp(prio, "low"))
731 iface->route_preference = -1;
732 else if (!strcmp(prio, "medium") || !strcmp(prio, "default"))
733 iface->route_preference = 0;
738 if ((c = tb[IFACE_ATTR_PD_MANAGER]))
739 strncpy(iface->dhcpv6_pd_manager, blobmsg_get_string(c),
740 sizeof(iface->dhcpv6_pd_manager) - 1);
742 if ((c = tb[IFACE_ATTR_PD_CER]) &&
743 inet_pton(AF_INET6, blobmsg_get_string(c), &iface->dhcpv6_pd_cer) < 1)
746 if ((c = tb[IFACE_ATTR_NDPROXY_ROUTING]))
747 iface->learn_routes = blobmsg_get_bool(c);
749 if ((c = tb[IFACE_ATTR_NDPROXY_SLAVE]))
750 iface->external = blobmsg_get_bool(c);
752 if ((c = tb[IFACE_ATTR_PREFIX_FILTER])) {
753 const char *str = blobmsg_get_string(c);
754 char *astr = malloc(strlen(str) + 1);
758 if (!astr || !strcpy(astr, str) ||
759 (delim = strchr(astr, '/')) == NULL || (*(delim++) = 0) ||
760 sscanf(delim, "%i", &l) == 0 || l > 128 ||
761 inet_pton(AF_INET6, astr, &iface->pio_filter_addr) == 0)
762 iface->pio_filter_length = 0;
764 iface->pio_filter_length = l;
773 close_interface(iface);
777 static int set_interface(struct uci_section *s)
779 blob_buf_init(&b, 0);
780 uci_to_blob(&b, s, &interface_attr_list);
782 return config_parse_interface(blob_data(b.head), blob_len(b.head), s->e.name, true);
785 void odhcpd_reload(void)
787 struct uci_context *uci = uci_alloc_context();
789 while (!list_empty(&leases))
790 free_lease(list_first_entry(&leases, struct lease, head));
792 struct interface *master = NULL, *i, *n;
797 list_for_each_entry(i, &interfaces, head)
800 struct uci_package *dhcp = NULL;
801 if (!uci_load(uci, "dhcp", &dhcp)) {
802 struct uci_element *e;
803 uci_foreach_element(&dhcp->sections, e) {
804 struct uci_section *s = uci_to_section(e);
805 if (!strcmp(s->type, "host"))
807 else if (!strcmp(s->type, "odhcpd"))
811 uci_foreach_element(&dhcp->sections, e) {
812 struct uci_section *s = uci_to_section(e);
813 if (!strcmp(s->type, "dhcp"))
818 if (config.dhcp_statefile) {
819 char *path = strdup(config.dhcp_statefile);
821 mkdir_p(dirname(path), 0755);
826 ubus_apply_network();
829 bool any_dhcpv6_slave = false, any_ra_slave = false, any_ndp_slave = false;
832 list_for_each_entry(i, &interfaces, head) {
836 if (i->dhcpv6 == MODE_HYBRID || i->dhcpv6 == MODE_RELAY)
837 any_dhcpv6_slave = true;
839 if (i->ra == MODE_HYBRID || i->ra == MODE_RELAY)
842 if (i->ndp == MODE_HYBRID || i->ndp == MODE_RELAY)
843 any_ndp_slave = true;
846 /* Evaluate hybrid mode for master */
847 list_for_each_entry(i, &interfaces, head) {
851 enum odhcpd_mode hybrid_mode = MODE_DISABLED;
853 if (!ubus_has_prefix(i->name, i->ifname))
854 hybrid_mode = MODE_RELAY;
857 if (i->dhcpv6 == MODE_HYBRID)
858 i->dhcpv6 = hybrid_mode;
860 if (i->dhcpv6 == MODE_RELAY && !any_dhcpv6_slave)
861 i->dhcpv6 = MODE_DISABLED;
863 if (i->ra == MODE_HYBRID)
866 if (i->ra == MODE_RELAY && !any_ra_slave)
867 i->ra = MODE_DISABLED;
869 if (i->ndp == MODE_HYBRID)
870 i->ndp = hybrid_mode;
872 if (i->ndp == MODE_RELAY && !any_ndp_slave)
873 i->ndp = MODE_DISABLED;
875 if (i->dhcpv6 == MODE_RELAY || i->ra == MODE_RELAY || i->ndp == MODE_RELAY)
880 list_for_each_entry_safe(i, n, &interfaces, head) {
882 /* Resolve hybrid mode */
883 if (i->dhcpv6 == MODE_HYBRID)
884 i->dhcpv6 = (master && master->dhcpv6 == MODE_RELAY) ?
885 MODE_RELAY : MODE_SERVER;
887 if (i->ra == MODE_HYBRID)
888 i->ra = (master && master->ra == MODE_RELAY) ?
889 MODE_RELAY : MODE_SERVER;
891 if (i->ndp == MODE_HYBRID)
892 i->ndp = (master && master->ndp == MODE_RELAY) ?
893 MODE_RELAY : MODE_DISABLED;
895 router_setup_interface(i, !i->ignore || i->ra != MODE_DISABLED);
896 dhcpv6_setup_interface(i, !i->ignore || i->dhcpv6 != MODE_DISABLED);
897 ndp_setup_interface(i, !i->ignore || i->ndp != MODE_DISABLED);
898 #ifdef DHCPV4_SUPPORT
899 dhcpv4_setup_interface(i, !i->ignore || i->dhcpv4 != MODE_DISABLED);
905 uci_unload(uci, dhcp);
906 uci_free_context(uci);
909 static void handle_signal(int signal)
913 if (signal == SIGHUP) {
914 if (write(reload_pipe[1], b, sizeof(b)) < 0) {}
919 static void reload_cb(struct uloop_fd *u, _unused unsigned int events)
922 if (read(u->fd, b, sizeof(b)) < 0) {}
927 static struct uloop_fd reload_fd = { .cb = reload_cb };
929 void odhcpd_run(void)
931 if (pipe2(reload_pipe, O_NONBLOCK | O_CLOEXEC) < 0) {}
933 reload_fd.fd = reload_pipe[0];
934 uloop_fd_add(&reload_fd, ULOOP_READ);
936 signal(SIGTERM, handle_signal);
937 signal(SIGINT, handle_signal);
938 signal(SIGHUP, handle_signal);
948 while (!list_empty(&interfaces))
949 close_interface(list_first_entry(&interfaces, struct interface, head));