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_ULA_COMPAT
,
36 IFACE_ATTR_RA_DEFAULT
,
37 IFACE_ATTR_RA_MANAGEMENT
,
38 IFACE_ATTR_RA_OFFLINK
,
39 IFACE_ATTR_RA_PREFERENCE
,
40 IFACE_ATTR_NDPROXY_ROUTING
,
41 IFACE_ATTR_NDPROXY_SLAVE
,
42 IFACE_ATTR_NDPROXY_STATIC
,
46 static const struct blobmsg_policy iface_attrs
[IFACE_ATTR_MAX
] = {
47 [IFACE_ATTR_INTERFACE
] = { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
48 [IFACE_ATTR_IFNAME
] = { .name
= "ifname", .type
= BLOBMSG_TYPE_STRING
},
49 [IFACE_ATTR_NETWORKID
] = { .name
= "networkid", .type
= BLOBMSG_TYPE_STRING
},
50 [IFACE_ATTR_DYNAMICDHCP
] = { .name
= "dynamicdhcp", .type
= BLOBMSG_TYPE_BOOL
},
51 [IFACE_ATTR_IGNORE
] = { .name
= "ignore", .type
= BLOBMSG_TYPE_BOOL
},
52 [IFACE_ATTR_LEASETIME
] = { .name
= "leasetime", .type
= BLOBMSG_TYPE_STRING
},
53 [IFACE_ATTR_START
] = { .name
= "start", .type
= BLOBMSG_TYPE_INT32
},
54 [IFACE_ATTR_LIMIT
] = { .name
= "limit", .type
= BLOBMSG_TYPE_INT32
},
55 [IFACE_ATTR_MASTER
] = { .name
= "master", .type
= BLOBMSG_TYPE_BOOL
},
56 [IFACE_ATTR_UPSTREAM
] = { .name
= "upstream", .type
= BLOBMSG_TYPE_ARRAY
},
57 [IFACE_ATTR_RA
] = { .name
= "ra", .type
= BLOBMSG_TYPE_STRING
},
58 [IFACE_ATTR_DHCPV4
] = { .name
= "dhcpv4", .type
= BLOBMSG_TYPE_STRING
},
59 [IFACE_ATTR_DHCPV6
] = { .name
= "dhcpv6", .type
= BLOBMSG_TYPE_STRING
},
60 [IFACE_ATTR_NDP
] = { .name
= "ndp", .type
= BLOBMSG_TYPE_STRING
},
61 [IFACE_ATTR_DNS
] = { .name
= "dns", .type
= BLOBMSG_TYPE_ARRAY
},
62 [IFACE_ATTR_DOMAIN
] = { .name
= "domain", .type
= BLOBMSG_TYPE_ARRAY
},
63 [IFACE_ATTR_ULA_COMPAT
] = { .name
= "ula_compat", .type
= BLOBMSG_TYPE_BOOL
},
64 [IFACE_ATTR_RA_DEFAULT
] = { .name
= "ra_default", .type
= BLOBMSG_TYPE_INT32
},
65 [IFACE_ATTR_RA_MANAGEMENT
] = { .name
= "ra_management", .type
= BLOBMSG_TYPE_INT32
},
66 [IFACE_ATTR_RA_OFFLINK
] = { .name
= "ra_offlink", .type
= BLOBMSG_TYPE_BOOL
},
67 [IFACE_ATTR_RA_PREFERENCE
] = { .name
= "ra_preference", .type
= BLOBMSG_TYPE_STRING
},
68 [IFACE_ATTR_NDPROXY_ROUTING
] = { .name
= "ndproxy_routing", .type
= BLOBMSG_TYPE_BOOL
},
69 [IFACE_ATTR_NDPROXY_SLAVE
] = { .name
= "ndproxy_slave", .type
= BLOBMSG_TYPE_BOOL
},
70 [IFACE_ATTR_NDPROXY_STATIC
] = { .name
= "ndproxy_static", .type
= BLOBMSG_TYPE_ARRAY
},
73 static const struct uci_blob_param_info iface_attr_info
[IFACE_ATTR_MAX
] = {
74 [IFACE_ATTR_UPSTREAM
] = { .type
= BLOBMSG_TYPE_STRING
},
75 [IFACE_ATTR_DNS
] = { .type
= BLOBMSG_TYPE_STRING
},
76 [IFACE_ATTR_DOMAIN
] = { .type
= BLOBMSG_TYPE_STRING
},
77 [IFACE_ATTR_NDPROXY_STATIC
] = { .type
= BLOBMSG_TYPE_STRING
},
80 const struct uci_blob_param_list interface_attr_list
= {
81 .n_params
= IFACE_ATTR_MAX
,
82 .params
= iface_attrs
,
83 .info
= iface_attr_info
,
97 static const struct blobmsg_policy lease_attrs
[LEASE_ATTR_MAX
] = {
98 [LEASE_ATTR_IP
] = { .name
= "ip", .type
= BLOBMSG_TYPE_STRING
},
99 [LEASE_ATTR_MAC
] = { .name
= "mac", .type
= BLOBMSG_TYPE_STRING
},
100 [LEASE_ATTR_DUID
] = { .name
= "duid", .type
= BLOBMSG_TYPE_STRING
},
101 [LEASE_ATTR_HOSTID
] = { .name
= "hostid", .type
= BLOBMSG_TYPE_STRING
},
102 [LEASE_ATTR_HOSTNAME
] = { .name
= "hostname", .type
= BLOBMSG_TYPE_STRING
},
106 const struct uci_blob_param_list lease_attr_list
= {
107 .n_params
= LEASE_ATTR_MAX
,
108 .params
= lease_attrs
,
114 ODHCPD_ATTR_LEASEFILE
,
115 ODHCPD_ATTR_LEASETRIGGER
,
120 static const struct blobmsg_policy odhcpd_attrs
[LEASE_ATTR_MAX
] = {
121 [ODHCPD_ATTR_LEGACY
] = { .name
= "legacy", .type
= BLOBMSG_TYPE_BOOL
},
122 [ODHCPD_ATTR_LEASEFILE
] = { .name
= "leasefile", .type
= BLOBMSG_TYPE_STRING
},
123 [ODHCPD_ATTR_LEASETRIGGER
] = { .name
= "leasetrigger", .type
= BLOBMSG_TYPE_STRING
},
127 const struct uci_blob_param_list odhcpd_attr_list
= {
128 .n_params
= ODHCPD_ATTR_MAX
,
129 .params
= odhcpd_attrs
,
133 static struct interface
* get_interface(const char *name
)
136 list_for_each_entry(c
, &interfaces
, head
)
137 if (!strcmp(c
->name
, name
))
143 static void clean_interface(struct interface
*iface
)
147 free(iface
->upstream
);
148 free(iface
->static_ndp
);
149 free(iface
->dhcpv4_dns
);
150 memset(&iface
->ra
, 0, sizeof(*iface
) - offsetof(struct interface
, ra
));
154 static void close_interface(struct interface
*iface
)
156 if (iface
->head
.next
)
157 list_del(&iface
->head
);
159 setup_router_interface(iface
, false);
160 setup_dhcpv6_interface(iface
, false);
161 setup_ndp_interface(iface
, false);
162 setup_dhcpv4_interface(iface
, false);
164 clean_interface(iface
);
169 static int parse_mode(const char *mode
)
171 if (!strcmp(mode
, "disabled")) {
172 return RELAYD_DISABLED
;
173 } else if (!strcmp(mode
, "server")) {
174 return RELAYD_SERVER
;
175 } else if (!strcmp(mode
, "relay")) {
177 } else if (!strcmp(mode
, "hybrid")) {
178 return RELAYD_HYBRID
;
185 static void set_config(struct uci_section
*s
)
187 struct blob_attr
*tb
[ODHCPD_ATTR_MAX
], *c
;
189 blob_buf_init(&b
, 0);
190 uci_to_blob(&b
, s
, &lease_attr_list
);
191 blobmsg_parse(lease_attrs
, ODHCPD_ATTR_MAX
, tb
, blob_data(b
.head
), blob_len(b
.head
));
193 if ((c
= tb
[ODHCPD_ATTR_LEGACY
]))
194 config
.legacy
= blobmsg_get_bool(c
);
196 if ((c
= tb
[ODHCPD_ATTR_LEASEFILE
])) {
197 free(config
.dhcp_statefile
);
198 config
.dhcp_statefile
= strdup(blobmsg_get_string(c
));
201 if ((c
= tb
[ODHCPD_ATTR_LEASETRIGGER
])) {
202 free(config
.dhcp_cb
);
203 config
.dhcp_cb
= strdup(blobmsg_get_string(c
));
208 static int set_lease(struct uci_section
*s
)
210 struct blob_attr
*tb
[LEASE_ATTR_MAX
], *c
;
212 blob_buf_init(&b
, 0);
213 uci_to_blob(&b
, s
, &lease_attr_list
);
214 blobmsg_parse(lease_attrs
, LEASE_ATTR_MAX
, tb
, blob_data(b
.head
), blob_len(b
.head
));
217 if ((c
= tb
[LEASE_ATTR_HOSTNAME
]))
218 hostlen
= blobmsg_data_len(c
);
220 struct lease
*lease
= calloc(1, sizeof(*lease
) + hostlen
);
223 memcpy(lease
->hostname
, blobmsg_get_string(c
), hostlen
);
225 if ((c
= tb
[LEASE_ATTR_IP
]))
226 if (inet_pton(AF_INET
, blobmsg_get_string(c
), &lease
->ipaddr
) < 0)
229 if ((c
= tb
[LEASE_ATTR_MAC
]))
230 if (!ether_aton_r(blobmsg_get_string(c
), &lease
->mac
))
233 if ((c
= tb
[LEASE_ATTR_DUID
])) {
234 size_t duidlen
= (blobmsg_data_len(c
) - 1) / 2;
235 lease
->duid
= malloc(duidlen
);
236 ssize_t len
= odhcpd_unhexlify(lease
->duid
,
237 duidlen
, blobmsg_get_string(c
));
242 lease
->duid_len
= len
;
245 if ((c
= tb
[LEASE_ATTR_HOSTID
]))
246 if (odhcpd_unhexlify((uint8_t*)&lease
->hostid
, sizeof(lease
->hostid
),
247 blobmsg_get_string(c
)) < 0)
250 list_add(&lease
->head
, &leases
);
260 int config_parse_interface(void *data
, size_t len
, const char *name
, bool overwrite
)
262 struct blob_attr
*tb
[IFACE_ATTR_MAX
], *c
;
263 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
, data
, len
);
265 if (tb
[IFACE_ATTR_INTERFACE
])
266 name
= blobmsg_get_string(tb
[IFACE_ATTR_INTERFACE
]);
271 struct interface
*iface
= get_interface(name
);
273 iface
= calloc(1, sizeof(*iface
));
274 strncpy(iface
->name
, name
, sizeof(iface
->name
) - 1);
275 list_add(&iface
->head
, &interfaces
);
276 } else if (overwrite
) {
277 clean_interface(iface
);
280 const char *ifname
= NULL
;
282 if (overwrite
|| !iface
->ifname
[0])
283 ifname
= ubus_get_ifname(name
);
287 if ((c
= tb
[IFACE_ATTR_IFNAME
]))
288 ifname
= blobmsg_get_string(c
);
289 else if ((c
= tb
[IFACE_ATTR_NETWORKID
]))
290 ifname
= blobmsg_get_string(c
);
293 if (!iface
->ifname
[0] && !ifname
)
297 strncpy(iface
->ifname
, ifname
, sizeof(iface
->ifname
) - 1);
302 clean_interface(iface
);
304 if ((c
= tb
[IFACE_ATTR_DYNAMICDHCP
]))
305 iface
->no_dynamic_dhcp
= !blobmsg_get_bool(c
);
307 if (overwrite
&& (c
= tb
[IFACE_ATTR_IGNORE
]))
308 iface
->ignore
= blobmsg_get_bool(c
);
310 if ((c
= tb
[IFACE_ATTR_LEASETIME
])) {
311 char *val
= blobmsg_get_string(c
), *endptr
;
312 double time
= strtod(val
, &endptr
);
313 if (time
&& endptr
[0]) {
314 if (endptr
[0] == 's')
316 else if (endptr
[0] == 'm')
318 else if (endptr
[0] == 'h')
320 else if (endptr
[0] == 'd')
322 else if (endptr
[0] == 'w')
323 time
*= 7 * 24 * 3600;
329 iface
->dhcpv4_leasetime
= time
;
332 if ((c
= tb
[IFACE_ATTR_START
])) {
333 iface
->dhcpv4_start
.s_addr
= htonl(blobmsg_get_u32(c
));
336 iface
->dhcpv4
= RELAYD_SERVER
;
339 if ((c
= tb
[IFACE_ATTR_LIMIT
]))
340 iface
->dhcpv4_end
.s_addr
= htonl(
341 ntohl(iface
->dhcpv4_start
.s_addr
) + blobmsg_get_u32(c
));
343 if ((c
= tb
[IFACE_ATTR_MASTER
]))
344 iface
->master
= blobmsg_get_bool(c
);
346 if (overwrite
&& (c
= tb
[IFACE_ATTR_UPSTREAM
])) {
347 struct blob_attr
*cur
;
350 blobmsg_for_each_attr(cur
, c
, rem
) {
351 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, NULL
))
354 iface
->upstream
= realloc(iface
->upstream
,
355 iface
->upstream_len
+ blobmsg_data_len(cur
));
356 memcpy(iface
->upstream
+ iface
->upstream_len
, blobmsg_get_string(cur
), blobmsg_data_len(cur
));
357 iface
->upstream_len
+= blobmsg_data_len(cur
);
362 if ((c
= tb
[IFACE_ATTR_RA
])) {
363 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0)
369 if ((c
= tb
[IFACE_ATTR_DHCPV4
])) {
370 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0)
371 iface
->dhcpv4
= mode
;
376 if ((c
= tb
[IFACE_ATTR_DHCPV6
])) {
377 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0)
378 iface
->dhcpv6
= mode
;
383 if ((c
= tb
[IFACE_ATTR_NDP
])) {
384 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0)
390 if ((c
= tb
[IFACE_ATTR_DNS
])) {
391 struct blob_attr
*cur
;
394 iface
->always_rewrite_dns
= true;
395 blobmsg_for_each_attr(cur
, c
, rem
) {
396 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, NULL
))
399 struct in_addr addr4
;
400 struct in6_addr addr6
;
401 if (inet_pton(AF_INET
, blobmsg_get_string(cur
), &addr4
) == 1) {
402 iface
->dhcpv4_dns
= realloc(iface
->dhcpv4_dns
,
403 (++iface
->dhcpv4_dns_cnt
) * sizeof(*iface
->dhcpv4_dns
));
404 iface
->dhcpv4_dns
[iface
->dhcpv4_dns_cnt
- 1] = addr4
;
405 } else if (inet_pton(AF_INET6
, blobmsg_get_string(cur
), &addr6
) == 1) {
406 iface
->dns
= realloc(iface
->dns
,
407 (++iface
->dns_cnt
) * sizeof(*iface
->dns
));
408 iface
->dns
[iface
->dns_cnt
- 1] = addr6
;
415 if ((c
= tb
[IFACE_ATTR_DOMAIN
])) {
416 struct blob_attr
*cur
;
419 blobmsg_for_each_attr(cur
, c
, rem
) {
420 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, NULL
))
424 int len
= dn_comp(blobmsg_get_string(cur
), buf
, sizeof(buf
), NULL
, NULL
);
428 iface
->search
= realloc(iface
->search
, iface
->search_len
+ len
);
429 memcpy(&iface
->search
[iface
->search_len
], buf
, len
);
430 iface
->search_len
+= len
;
434 if ((c
= tb
[IFACE_ATTR_ULA_COMPAT
]))
435 iface
->deprecate_ula_if_public_avail
= blobmsg_get_bool(c
);
437 if ((c
= tb
[IFACE_ATTR_RA_DEFAULT
]))
438 iface
->default_router
= blobmsg_get_u32(c
);
440 if ((c
= tb
[IFACE_ATTR_RA_MANAGEMENT
]))
441 iface
->managed
= blobmsg_get_u32(c
);
443 if ((c
= tb
[IFACE_ATTR_RA_OFFLINK
]))
444 iface
->ra_not_onlink
= blobmsg_get_bool(c
);
446 if ((c
= tb
[IFACE_ATTR_RA_PREFERENCE
])) {
447 const char *prio
= blobmsg_get_string(c
);
449 if (!strcmp(prio
, "high"))
450 iface
->route_preference
= 1;
451 else if (!strcmp(prio
, "low"))
452 iface
->route_preference
= -1;
453 else if (!strcmp(prio
, "medium") || !strcmp(prio
, "default"))
454 iface
->route_preference
= 0;
459 if ((c
= tb
[IFACE_ATTR_NDPROXY_ROUTING
]))
460 iface
->learn_routes
= blobmsg_get_bool(c
);
462 if ((c
= tb
[IFACE_ATTR_NDPROXY_SLAVE
]))
463 iface
->external
= blobmsg_get_bool(c
);
465 if ((c
= tb
[IFACE_ATTR_NDPROXY_STATIC
])) {
466 struct blob_attr
*cur
;
469 blobmsg_for_each_attr(cur
, c
, rem
) {
470 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, NULL
))
473 int len
= blobmsg_data_len(cur
);
474 iface
->static_ndp
= realloc(iface
->static_ndp
, iface
->static_ndp_len
+ len
);
475 memcpy(&iface
->static_ndp
[iface
->static_ndp_len
], blobmsg_get_string(cur
), len
);
476 iface
->static_ndp_len
+= len
;
480 iface
->ignore
= (iface
->ifindex
= if_nametoindex(iface
->ifname
)) < 0;
484 close_interface(iface
);
488 static int set_interface(struct uci_section
*s
)
490 blob_buf_init(&b
, 0);
491 uci_to_blob(&b
, s
, &interface_attr_list
);
492 return config_parse_interface(blob_data(b
.head
), blob_len(b
.head
), s
->e
.name
, true);
496 void odhcpd_reload(void)
498 struct uci_context
*uci
= uci_alloc_context();
500 list_for_each_entry(l
, &leases
, head
) {
506 struct uci_package
*dhcp
= NULL
;
507 if (!uci_load(uci
, "dhcp", &dhcp
)) {
508 struct uci_element
*e
;
509 uci_foreach_element(&dhcp
->sections
, e
) {
510 struct uci_section
*s
= uci_to_section(e
);
511 if (!strcmp(s
->type
, "lease"))
513 else if (!strcmp(s
->type
, "odhcpd"))
517 uci_foreach_element(&dhcp
->sections
, e
) {
518 struct uci_section
*s
= uci_to_section(e
);
519 if (!strcmp(s
->type
, "dhcp"))
525 ubus_apply_network();
528 // Evaluate hybrid mode for master
529 struct interface
*master
= NULL
, *i
, *n
;
530 list_for_each_entry(i
, &interfaces
, head
) {
534 enum odhcpd_mode hybrid_mode
= RELAYD_DISABLED
;
536 if (ubus_has_prefix(i
->name
, i
->ifname
))
537 hybrid_mode
= RELAYD_RELAY
;
540 if (i
->dhcpv6
== RELAYD_HYBRID
)
541 i
->dhcpv6
= hybrid_mode
;
543 if (i
->ra
== RELAYD_HYBRID
)
546 if (i
->ndp
== RELAYD_HYBRID
)
547 i
->ndp
= hybrid_mode
;
549 if (i
->dhcpv6
== RELAYD_RELAY
|| i
->ra
== RELAYD_RELAY
|| i
->ndp
== RELAYD_RELAY
)
554 list_for_each_entry_safe(i
, n
, &interfaces
, head
) {
556 // Resolve hybrid mode
557 if (i
->dhcpv6
== RELAYD_HYBRID
)
558 i
->dhcpv6
= (master
&& master
->dhcpv6
== RELAYD_RELAY
) ?
559 RELAYD_RELAY
: RELAYD_SERVER
;
561 if (i
->ra
== RELAYD_HYBRID
)
562 i
->ra
= (master
&& master
->ra
== RELAYD_RELAY
) ?
563 RELAYD_RELAY
: RELAYD_SERVER
;
565 if (i
->ndp
== RELAYD_HYBRID
)
566 i
->ndp
= (master
&& master
->ndp
== RELAYD_RELAY
) ?
567 RELAYD_RELAY
: RELAYD_SERVER
;
569 setup_router_interface(i
, true);
570 setup_dhcpv6_interface(i
, true);
571 setup_ndp_interface(i
, true);
572 setup_dhcpv4_interface(i
, true);
579 uci_unload(uci
, dhcp
);
580 uci_free_context(uci
);
584 static void handle_signal(int signal
)
587 if (signal
== SIGHUP
)
588 write(reload_pipe
[1], b
, sizeof(b
));
595 static void reload_cb(struct uloop_fd
*u
, _unused
unsigned int events
)
598 read(u
->fd
, b
, sizeof(b
));
602 static struct uloop_fd reload_fd
= { .cb
= reload_cb
};
604 void odhcpd_run(void)
606 pipe2(reload_pipe
, O_NONBLOCK
| O_CLOEXEC
);
607 reload_fd
.fd
= reload_pipe
[0];
608 uloop_fd_add(&reload_fd
, ULOOP_READ
);
610 signal(SIGTERM
, handle_signal
);
611 signal(SIGINT
, handle_signal
);
612 signal(SIGHUP
, handle_signal
);