12 static struct blob_buf b
;
13 static int reload_pipe
[2];
14 struct list_head leases
= LIST_HEAD_INIT(leases
);
15 struct list_head interfaces
= LIST_HEAD_INIT(interfaces
);
16 struct config config
= {false, NULL
, NULL
};
22 IFACE_ATTR_DYNAMICDHCP
,
35 IFACE_ATTR_RA_DEFAULT
,
36 IFACE_ATTR_RA_MANAGEMENT
,
37 IFACE_ATTR_RA_OFFLINK
,
38 IFACE_ATTR_RA_PREFERENCE
,
39 IFACE_ATTR_PD_MANAGER
,
41 IFACE_ATTR_NDPROXY_ROUTING
,
42 IFACE_ATTR_NDPROXY_SLAVE
,
43 IFACE_ATTR_NDPROXY_STATIC
,
47 static const struct blobmsg_policy iface_attrs
[IFACE_ATTR_MAX
] = {
48 [IFACE_ATTR_INTERFACE
] = { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
49 [IFACE_ATTR_IFNAME
] = { .name
= "ifname", .type
= BLOBMSG_TYPE_STRING
},
50 [IFACE_ATTR_NETWORKID
] = { .name
= "networkid", .type
= BLOBMSG_TYPE_STRING
},
51 [IFACE_ATTR_DYNAMICDHCP
] = { .name
= "dynamicdhcp", .type
= BLOBMSG_TYPE_BOOL
},
52 [IFACE_ATTR_IGNORE
] = { .name
= "ignore", .type
= BLOBMSG_TYPE_BOOL
},
53 [IFACE_ATTR_LEASETIME
] = { .name
= "leasetime", .type
= BLOBMSG_TYPE_STRING
},
54 [IFACE_ATTR_START
] = { .name
= "start", .type
= BLOBMSG_TYPE_INT32
},
55 [IFACE_ATTR_LIMIT
] = { .name
= "limit", .type
= BLOBMSG_TYPE_INT32
},
56 [IFACE_ATTR_MASTER
] = { .name
= "master", .type
= BLOBMSG_TYPE_BOOL
},
57 [IFACE_ATTR_UPSTREAM
] = { .name
= "upstream", .type
= BLOBMSG_TYPE_ARRAY
},
58 [IFACE_ATTR_RA
] = { .name
= "ra", .type
= BLOBMSG_TYPE_STRING
},
59 [IFACE_ATTR_DHCPV4
] = { .name
= "dhcpv4", .type
= BLOBMSG_TYPE_STRING
},
60 [IFACE_ATTR_DHCPV6
] = { .name
= "dhcpv6", .type
= BLOBMSG_TYPE_STRING
},
61 [IFACE_ATTR_NDP
] = { .name
= "ndp", .type
= BLOBMSG_TYPE_STRING
},
62 [IFACE_ATTR_DNS
] = { .name
= "dns", .type
= BLOBMSG_TYPE_ARRAY
},
63 [IFACE_ATTR_DOMAIN
] = { .name
= "domain", .type
= BLOBMSG_TYPE_ARRAY
},
64 [IFACE_ATTR_PD_MANAGER
] = { .name
= "pd_manager", .type
= BLOBMSG_TYPE_STRING
},
65 [IFACE_ATTR_PD_CER
] = { .name
= "pd_cer", .type
= BLOBMSG_TYPE_STRING
},
66 [IFACE_ATTR_RA_DEFAULT
] = { .name
= "ra_default", .type
= BLOBMSG_TYPE_INT32
},
67 [IFACE_ATTR_RA_MANAGEMENT
] = { .name
= "ra_management", .type
= BLOBMSG_TYPE_INT32
},
68 [IFACE_ATTR_RA_OFFLINK
] = { .name
= "ra_offlink", .type
= BLOBMSG_TYPE_BOOL
},
69 [IFACE_ATTR_RA_PREFERENCE
] = { .name
= "ra_preference", .type
= BLOBMSG_TYPE_STRING
},
70 [IFACE_ATTR_NDPROXY_ROUTING
] = { .name
= "ndproxy_routing", .type
= BLOBMSG_TYPE_BOOL
},
71 [IFACE_ATTR_NDPROXY_SLAVE
] = { .name
= "ndproxy_slave", .type
= BLOBMSG_TYPE_BOOL
},
72 [IFACE_ATTR_NDPROXY_STATIC
] = { .name
= "ndproxy_static", .type
= BLOBMSG_TYPE_ARRAY
},
75 static const struct uci_blob_param_info iface_attr_info
[IFACE_ATTR_MAX
] = {
76 [IFACE_ATTR_UPSTREAM
] = { .type
= BLOBMSG_TYPE_STRING
},
77 [IFACE_ATTR_DNS
] = { .type
= BLOBMSG_TYPE_STRING
},
78 [IFACE_ATTR_DOMAIN
] = { .type
= BLOBMSG_TYPE_STRING
},
79 [IFACE_ATTR_NDPROXY_STATIC
] = { .type
= BLOBMSG_TYPE_STRING
},
82 const struct uci_blob_param_list interface_attr_list
= {
83 .n_params
= IFACE_ATTR_MAX
,
84 .params
= iface_attrs
,
85 .info
= iface_attr_info
,
99 static const struct blobmsg_policy lease_attrs
[LEASE_ATTR_MAX
] = {
100 [LEASE_ATTR_IP
] = { .name
= "ip", .type
= BLOBMSG_TYPE_STRING
},
101 [LEASE_ATTR_MAC
] = { .name
= "mac", .type
= BLOBMSG_TYPE_STRING
},
102 [LEASE_ATTR_DUID
] = { .name
= "duid", .type
= BLOBMSG_TYPE_STRING
},
103 [LEASE_ATTR_HOSTID
] = { .name
= "hostid", .type
= BLOBMSG_TYPE_STRING
},
104 [LEASE_ATTR_NAME
] = { .name
= "name", .type
= BLOBMSG_TYPE_STRING
},
108 const struct uci_blob_param_list lease_attr_list
= {
109 .n_params
= LEASE_ATTR_MAX
,
110 .params
= lease_attrs
,
115 ODHCPD_ATTR_MAINDHCP
,
116 ODHCPD_ATTR_LEASEFILE
,
117 ODHCPD_ATTR_LEASETRIGGER
,
122 static const struct blobmsg_policy odhcpd_attrs
[LEASE_ATTR_MAX
] = {
123 [ODHCPD_ATTR_MAINDHCP
] = { .name
= "maindhcp", .type
= BLOBMSG_TYPE_BOOL
},
124 [ODHCPD_ATTR_LEASEFILE
] = { .name
= "leasefile", .type
= BLOBMSG_TYPE_STRING
},
125 [ODHCPD_ATTR_LEASETRIGGER
] = { .name
= "leasetrigger", .type
= BLOBMSG_TYPE_STRING
},
129 const struct uci_blob_param_list odhcpd_attr_list
= {
130 .n_params
= ODHCPD_ATTR_MAX
,
131 .params
= odhcpd_attrs
,
135 static struct interface
* get_interface(const char *name
)
138 list_for_each_entry(c
, &interfaces
, head
)
139 if (!strcmp(c
->name
, name
))
145 static void clean_interface(struct interface
*iface
)
149 free(iface
->upstream
);
150 free(iface
->static_ndp
);
151 free(iface
->dhcpv4_dns
);
152 memset(&iface
->ra
, 0, sizeof(*iface
) - offsetof(struct interface
, ra
));
156 static void close_interface(struct interface
*iface
)
158 if (iface
->head
.next
)
159 list_del(&iface
->head
);
161 setup_router_interface(iface
, false);
162 setup_dhcpv6_interface(iface
, false);
163 setup_ndp_interface(iface
, false);
164 setup_dhcpv4_interface(iface
, false);
166 clean_interface(iface
);
171 static int parse_mode(const char *mode
)
173 if (!strcmp(mode
, "disabled")) {
174 return RELAYD_DISABLED
;
175 } else if (!strcmp(mode
, "server")) {
176 return RELAYD_SERVER
;
177 } else if (!strcmp(mode
, "relay")) {
179 } else if (!strcmp(mode
, "hybrid")) {
180 return RELAYD_HYBRID
;
187 static void set_config(struct uci_section
*s
)
189 struct blob_attr
*tb
[ODHCPD_ATTR_MAX
], *c
;
191 blob_buf_init(&b
, 0);
192 uci_to_blob(&b
, s
, &odhcpd_attr_list
);
193 blobmsg_parse(odhcpd_attrs
, ODHCPD_ATTR_MAX
, tb
, blob_data(b
.head
), blob_len(b
.head
));
195 if ((c
= tb
[ODHCPD_ATTR_MAINDHCP
]))
196 config
.legacy
= blobmsg_get_bool(c
);
198 if ((c
= tb
[ODHCPD_ATTR_LEASEFILE
])) {
199 free(config
.dhcp_statefile
);
200 config
.dhcp_statefile
= strdup(blobmsg_get_string(c
));
203 if ((c
= tb
[ODHCPD_ATTR_LEASETRIGGER
])) {
204 free(config
.dhcp_cb
);
205 config
.dhcp_cb
= strdup(blobmsg_get_string(c
));
210 static int set_lease(struct uci_section
*s
)
212 struct blob_attr
*tb
[LEASE_ATTR_MAX
], *c
;
214 blob_buf_init(&b
, 0);
215 uci_to_blob(&b
, s
, &lease_attr_list
);
216 blobmsg_parse(lease_attrs
, LEASE_ATTR_MAX
, tb
, blob_data(b
.head
), blob_len(b
.head
));
219 if ((c
= tb
[LEASE_ATTR_NAME
]))
220 hostlen
= blobmsg_data_len(c
);
222 struct lease
*lease
= calloc(1, sizeof(*lease
) + hostlen
);
227 memcpy(lease
->hostname
, blobmsg_get_string(c
), hostlen
);
229 if ((c
= tb
[LEASE_ATTR_IP
]))
230 if (inet_pton(AF_INET
, blobmsg_get_string(c
), &lease
->ipaddr
) < 0)
233 if ((c
= tb
[LEASE_ATTR_MAC
]))
234 if (!ether_aton_r(blobmsg_get_string(c
), &lease
->mac
))
237 if ((c
= tb
[LEASE_ATTR_DUID
])) {
238 size_t duidlen
= (blobmsg_data_len(c
) - 1) / 2;
239 lease
->duid
= malloc(duidlen
);
243 ssize_t len
= odhcpd_unhexlify(lease
->duid
,
244 duidlen
, blobmsg_get_string(c
));
249 lease
->duid_len
= len
;
252 if ((c
= tb
[LEASE_ATTR_HOSTID
]))
253 if (odhcpd_unhexlify((uint8_t*)&lease
->hostid
, sizeof(lease
->hostid
),
254 blobmsg_get_string(c
)) < 0)
257 list_add(&lease
->head
, &leases
);
269 int config_parse_interface(void *data
, size_t len
, const char *name
, bool overwrite
)
271 struct blob_attr
*tb
[IFACE_ATTR_MAX
], *c
;
272 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
, data
, len
);
274 if (tb
[IFACE_ATTR_INTERFACE
])
275 name
= blobmsg_get_string(tb
[IFACE_ATTR_INTERFACE
]);
280 struct interface
*iface
= get_interface(name
);
282 iface
= calloc(1, sizeof(*iface
));
286 strncpy(iface
->name
, name
, sizeof(iface
->name
) - 1);
287 list_add(&iface
->head
, &interfaces
);
290 const char *ifname
= NULL
;
292 if (overwrite
|| !iface
->ifname
[0])
293 ifname
= ubus_get_ifname(name
);
297 if ((c
= tb
[IFACE_ATTR_IFNAME
]))
298 ifname
= blobmsg_get_string(c
);
299 else if ((c
= tb
[IFACE_ATTR_NETWORKID
]))
300 ifname
= blobmsg_get_string(c
);
303 if (!iface
->ifname
[0] && !ifname
)
307 strncpy(iface
->ifname
, ifname
, sizeof(iface
->ifname
) - 1);
309 if ((iface
->ifindex
= if_nametoindex(iface
->ifname
)) <= 0)
314 if ((c
= tb
[IFACE_ATTR_DYNAMICDHCP
]))
315 iface
->no_dynamic_dhcp
= !blobmsg_get_bool(c
);
317 if (overwrite
&& (c
= tb
[IFACE_ATTR_IGNORE
]))
318 iface
->ignore
= blobmsg_get_bool(c
);
320 if ((c
= tb
[IFACE_ATTR_LEASETIME
])) {
321 char *val
= blobmsg_get_string(c
), *endptr
;
322 double time
= strtod(val
, &endptr
);
323 if (time
&& endptr
[0]) {
324 if (endptr
[0] == 's')
326 else if (endptr
[0] == 'm')
328 else if (endptr
[0] == 'h')
330 else if (endptr
[0] == 'd')
332 else if (endptr
[0] == 'w')
333 time
*= 7 * 24 * 3600;
339 iface
->dhcpv4_leasetime
= time
;
342 if ((c
= tb
[IFACE_ATTR_START
])) {
343 iface
->dhcpv4_start
.s_addr
= htonl(blobmsg_get_u32(c
));
346 iface
->dhcpv4
= RELAYD_SERVER
;
349 if ((c
= tb
[IFACE_ATTR_LIMIT
]))
350 iface
->dhcpv4_end
.s_addr
= htonl(
351 ntohl(iface
->dhcpv4_start
.s_addr
) + blobmsg_get_u32(c
));
353 if ((c
= tb
[IFACE_ATTR_MASTER
]))
354 iface
->master
= blobmsg_get_bool(c
);
356 if (overwrite
&& (c
= tb
[IFACE_ATTR_UPSTREAM
])) {
357 struct blob_attr
*cur
;
360 blobmsg_for_each_attr(cur
, c
, rem
) {
361 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, NULL
))
364 iface
->upstream
= realloc(iface
->upstream
,
365 iface
->upstream_len
+ blobmsg_data_len(cur
));
366 if (!iface
->upstream
)
369 memcpy(iface
->upstream
+ iface
->upstream_len
, blobmsg_get_string(cur
), blobmsg_data_len(cur
));
370 iface
->upstream_len
+= blobmsg_data_len(cur
);
375 if ((c
= tb
[IFACE_ATTR_RA
])) {
376 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0)
382 if ((c
= tb
[IFACE_ATTR_DHCPV4
])) {
383 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0)
384 iface
->dhcpv4
= mode
;
389 if ((c
= tb
[IFACE_ATTR_DHCPV6
])) {
390 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0)
391 iface
->dhcpv6
= mode
;
396 if ((c
= tb
[IFACE_ATTR_NDP
])) {
397 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0)
403 if ((c
= tb
[IFACE_ATTR_DNS
])) {
404 struct blob_attr
*cur
;
407 iface
->always_rewrite_dns
= true;
408 blobmsg_for_each_attr(cur
, c
, rem
) {
409 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, NULL
))
412 struct in_addr addr4
;
413 struct in6_addr addr6
;
414 if (inet_pton(AF_INET
, blobmsg_get_string(cur
), &addr4
) == 1) {
415 iface
->dhcpv4_dns
= realloc(iface
->dhcpv4_dns
,
416 (++iface
->dhcpv4_dns_cnt
) * sizeof(*iface
->dhcpv4_dns
));
417 if (!iface
->dhcpv4_dns
)
420 iface
->dhcpv4_dns
[iface
->dhcpv4_dns_cnt
- 1] = addr4
;
421 } else if (inet_pton(AF_INET6
, blobmsg_get_string(cur
), &addr6
) == 1) {
422 iface
->dns
= realloc(iface
->dns
,
423 (++iface
->dns_cnt
) * sizeof(*iface
->dns
));
427 iface
->dns
[iface
->dns_cnt
- 1] = addr6
;
434 if ((c
= tb
[IFACE_ATTR_DOMAIN
])) {
435 struct blob_attr
*cur
;
438 blobmsg_for_each_attr(cur
, c
, rem
) {
439 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, NULL
))
443 int len
= dn_comp(blobmsg_get_string(cur
), buf
, sizeof(buf
), NULL
, NULL
);
447 iface
->search
= realloc(iface
->search
, iface
->search_len
+ len
);
451 memcpy(&iface
->search
[iface
->search_len
], buf
, len
);
452 iface
->search_len
+= len
;
456 if ((c
= tb
[IFACE_ATTR_RA_DEFAULT
]))
457 iface
->default_router
= blobmsg_get_u32(c
);
459 if ((c
= tb
[IFACE_ATTR_RA_MANAGEMENT
]))
460 iface
->managed
= blobmsg_get_u32(c
);
464 if ((c
= tb
[IFACE_ATTR_RA_OFFLINK
]))
465 iface
->ra_not_onlink
= blobmsg_get_bool(c
);
467 if ((c
= tb
[IFACE_ATTR_RA_PREFERENCE
])) {
468 const char *prio
= blobmsg_get_string(c
);
470 if (!strcmp(prio
, "high"))
471 iface
->route_preference
= 1;
472 else if (!strcmp(prio
, "low"))
473 iface
->route_preference
= -1;
474 else if (!strcmp(prio
, "medium") || !strcmp(prio
, "default"))
475 iface
->route_preference
= 0;
480 if ((c
= tb
[IFACE_ATTR_PD_MANAGER
]))
481 strncpy(iface
->dhcpv6_pd_manager
, blobmsg_get_string(c
),
482 sizeof(iface
->dhcpv6_pd_manager
) - 1);
484 if ((c
= tb
[IFACE_ATTR_PD_CER
]) &&
485 inet_pton(AF_INET6
, blobmsg_get_string(c
), &iface
->dhcpv6_pd_cer
) < 1)
488 if ((c
= tb
[IFACE_ATTR_NDPROXY_ROUTING
]))
489 iface
->learn_routes
= blobmsg_get_bool(c
);
491 iface
->learn_routes
= true;
493 if ((c
= tb
[IFACE_ATTR_NDPROXY_SLAVE
]))
494 iface
->external
= blobmsg_get_bool(c
);
496 if ((c
= tb
[IFACE_ATTR_NDPROXY_STATIC
])) {
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
, NULL
))
504 int len
= blobmsg_data_len(cur
);
505 iface
->static_ndp
= realloc(iface
->static_ndp
, iface
->static_ndp_len
+ len
);
506 if (!iface
->static_ndp
)
509 if (iface
->static_ndp_len
)
510 iface
->static_ndp
[iface
->static_ndp_len
- 1] = ' ';
512 memcpy(&iface
->static_ndp
[iface
->static_ndp_len
], blobmsg_get_string(cur
), len
);
513 iface
->static_ndp_len
+= len
;
520 close_interface(iface
);
524 static int set_interface(struct uci_section
*s
)
526 blob_buf_init(&b
, 0);
527 uci_to_blob(&b
, s
, &interface_attr_list
);
528 return config_parse_interface(blob_data(b
.head
), blob_len(b
.head
), s
->e
.name
, true);
532 void odhcpd_reload(void)
534 struct uci_context
*uci
= uci_alloc_context();
535 while (!list_empty(&leases
)) {
536 struct lease
*l
= list_first_entry(&leases
, struct lease
, head
);
542 struct interface
*master
= NULL
, *i
, *n
;
547 list_for_each_entry(i
, &interfaces
, head
)
550 struct uci_package
*dhcp
= NULL
;
551 if (!uci_load(uci
, "dhcp", &dhcp
)) {
552 struct uci_element
*e
;
553 uci_foreach_element(&dhcp
->sections
, e
) {
554 struct uci_section
*s
= uci_to_section(e
);
555 if (!strcmp(s
->type
, "host"))
557 else if (!strcmp(s
->type
, "odhcpd"))
561 uci_foreach_element(&dhcp
->sections
, e
) {
562 struct uci_section
*s
= uci_to_section(e
);
563 if (!strcmp(s
->type
, "dhcp"))
570 ubus_apply_network();
573 bool any_dhcpv6_slave
= false, any_ra_slave
= false, any_ndp_slave
= false;
576 list_for_each_entry(i
, &interfaces
, head
) {
580 if (i
->dhcpv6
== RELAYD_HYBRID
|| i
->dhcpv6
== RELAYD_RELAY
)
581 any_dhcpv6_slave
= true;
583 if (i
->ra
== RELAYD_HYBRID
|| i
->ra
== RELAYD_RELAY
)
586 if (i
->ndp
== RELAYD_HYBRID
|| i
->ndp
== RELAYD_RELAY
)
587 any_ndp_slave
= true;
590 // Evaluate hybrid mode for master
591 list_for_each_entry(i
, &interfaces
, head
) {
595 enum odhcpd_mode hybrid_mode
= RELAYD_DISABLED
;
597 if (!ubus_has_prefix(i
->name
, i
->ifname
))
598 hybrid_mode
= RELAYD_RELAY
;
601 if (i
->dhcpv6
== RELAYD_HYBRID
)
602 i
->dhcpv6
= hybrid_mode
;
604 if (i
->dhcpv6
== RELAYD_RELAY
&& !any_dhcpv6_slave
)
605 i
->dhcpv6
= RELAYD_DISABLED
;
607 if (i
->ra
== RELAYD_HYBRID
)
610 if (i
->ra
== RELAYD_RELAY
&& !any_ra_slave
)
611 i
->ra
= RELAYD_DISABLED
;
613 if (i
->ndp
== RELAYD_HYBRID
)
614 i
->ndp
= hybrid_mode
;
616 if (i
->ndp
== RELAYD_RELAY
&& !any_ndp_slave
)
617 i
->ndp
= RELAYD_DISABLED
;
619 if (i
->dhcpv6
== RELAYD_RELAY
|| i
->ra
== RELAYD_RELAY
|| i
->ndp
== RELAYD_RELAY
)
624 list_for_each_entry_safe(i
, n
, &interfaces
, head
) {
626 // Resolve hybrid mode
627 if (i
->dhcpv6
== RELAYD_HYBRID
)
628 i
->dhcpv6
= (master
&& master
->dhcpv6
== RELAYD_RELAY
) ?
629 RELAYD_RELAY
: RELAYD_SERVER
;
631 if (i
->ra
== RELAYD_HYBRID
)
632 i
->ra
= (master
&& master
->ra
== RELAYD_RELAY
) ?
633 RELAYD_RELAY
: RELAYD_SERVER
;
635 if (i
->ndp
== RELAYD_HYBRID
)
636 i
->ndp
= (master
&& master
->ndp
== RELAYD_RELAY
) ?
637 RELAYD_RELAY
: RELAYD_DISABLED
;
639 setup_router_interface(i
, true);
640 setup_dhcpv6_interface(i
, true);
641 setup_ndp_interface(i
, true);
642 setup_dhcpv4_interface(i
, true);
648 uci_unload(uci
, dhcp
);
649 uci_free_context(uci
);
653 static void handle_signal(int signal
)
656 if (signal
== SIGHUP
)
657 write(reload_pipe
[1], b
, sizeof(b
));
664 static void reload_cb(struct uloop_fd
*u
, _unused
unsigned int events
)
667 read(u
->fd
, b
, sizeof(b
));
671 static struct uloop_fd reload_fd
= { .cb
= reload_cb
};
673 void odhcpd_run(void)
675 pipe2(reload_pipe
, O_NONBLOCK
| O_CLOEXEC
);
676 reload_fd
.fd
= reload_pipe
[0];
677 uloop_fd_add(&reload_fd
, ULOOP_READ
);
679 signal(SIGTERM
, handle_signal
);
680 signal(SIGINT
, handle_signal
);
681 signal(SIGHUP
, handle_signal
);