14 #include <libubox/utils.h>
15 #include <libubox/avl.h>
16 #include <libubox/avl-cmp.h>
17 #include <libubox/list.h>
18 #include <libubox/vlist.h>
22 static struct blob_buf b
;
23 static int reload_pipe
[2];
25 static int lease_cmp(const void *k1
, const void *k2
, void *ptr
);
26 static void lease_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
27 struct vlist_node
*node_old
);
29 struct vlist_tree leases
= VLIST_TREE_INIT(leases
, lease_cmp
, lease_update
, true, false);
30 AVL_TREE(interfaces
, avl_strcmp
, false, NULL
);
31 struct config config
= {.legacy
= false, .main_dhcpv4
= false,
32 .dhcp_cb
= NULL
, .dhcp_statefile
= NULL
,
33 .log_level
= LOG_INFO
};
39 IFACE_ATTR_DYNAMICDHCP
,
53 IFACE_ATTR_FILTER_CLASS
,
54 IFACE_ATTR_DHCPV4_FORCERECONF
,
55 IFACE_ATTR_DHCPV6_RAW
,
56 IFACE_ATTR_DHCPV6_ASSIGNALL
,
59 IFACE_ATTR_RA_DEFAULT
,
60 IFACE_ATTR_RA_MANAGEMENT
,
61 IFACE_ATTR_RA_OFFLINK
,
62 IFACE_ATTR_RA_PREFERENCE
,
63 IFACE_ATTR_RA_ADVROUTER
,
64 IFACE_ATTR_RA_MININTERVAL
,
65 IFACE_ATTR_RA_MAXINTERVAL
,
66 IFACE_ATTR_RA_LIFETIME
,
67 IFACE_ATTR_RA_USELEASETIME
,
68 IFACE_ATTR_RA_REACHABLETIME
,
69 IFACE_ATTR_RA_RETRANSTIME
,
70 IFACE_ATTR_RA_HOPLIMIT
,
73 IFACE_ATTR_PD_MANAGER
,
75 IFACE_ATTR_NDPROXY_ROUTING
,
76 IFACE_ATTR_NDPROXY_SLAVE
,
77 IFACE_ATTR_PREFIX_FILTER
,
81 static const struct blobmsg_policy iface_attrs
[IFACE_ATTR_MAX
] = {
82 [IFACE_ATTR_INTERFACE
] = { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
83 [IFACE_ATTR_IFNAME
] = { .name
= "ifname", .type
= BLOBMSG_TYPE_STRING
},
84 [IFACE_ATTR_NETWORKID
] = { .name
= "networkid", .type
= BLOBMSG_TYPE_STRING
},
85 [IFACE_ATTR_DYNAMICDHCP
] = { .name
= "dynamicdhcp", .type
= BLOBMSG_TYPE_BOOL
},
86 [IFACE_ATTR_IGNORE
] = { .name
= "ignore", .type
= BLOBMSG_TYPE_BOOL
},
87 [IFACE_ATTR_LEASETIME
] = { .name
= "leasetime", .type
= BLOBMSG_TYPE_STRING
},
88 [IFACE_ATTR_START
] = { .name
= "start", .type
= BLOBMSG_TYPE_INT32
},
89 [IFACE_ATTR_LIMIT
] = { .name
= "limit", .type
= BLOBMSG_TYPE_INT32
},
90 [IFACE_ATTR_MASTER
] = { .name
= "master", .type
= BLOBMSG_TYPE_BOOL
},
91 [IFACE_ATTR_UPSTREAM
] = { .name
= "upstream", .type
= BLOBMSG_TYPE_ARRAY
},
92 [IFACE_ATTR_RA
] = { .name
= "ra", .type
= BLOBMSG_TYPE_STRING
},
93 [IFACE_ATTR_DHCPV4
] = { .name
= "dhcpv4", .type
= BLOBMSG_TYPE_STRING
},
94 [IFACE_ATTR_DHCPV6
] = { .name
= "dhcpv6", .type
= BLOBMSG_TYPE_STRING
},
95 [IFACE_ATTR_NDP
] = { .name
= "ndp", .type
= BLOBMSG_TYPE_STRING
},
96 [IFACE_ATTR_ROUTER
] = { .name
= "router", .type
= BLOBMSG_TYPE_ARRAY
},
97 [IFACE_ATTR_DNS
] = { .name
= "dns", .type
= BLOBMSG_TYPE_ARRAY
},
98 [IFACE_ATTR_DOMAIN
] = { .name
= "domain", .type
= BLOBMSG_TYPE_ARRAY
},
99 [IFACE_ATTR_FILTER_CLASS
] = { .name
= "filter_class", .type
= BLOBMSG_TYPE_STRING
},
100 [IFACE_ATTR_DHCPV4_FORCERECONF
] = { .name
= "dhcpv4_forcereconf", .type
= BLOBMSG_TYPE_BOOL
},
101 [IFACE_ATTR_DHCPV6_RAW
] = { .name
= "dhcpv6_raw", .type
= BLOBMSG_TYPE_STRING
},
102 [IFACE_ATTR_DHCPV6_ASSIGNALL
] = { .name
="dhcpv6_assignall", .type
= BLOBMSG_TYPE_BOOL
},
103 [IFACE_ATTR_DHCPV6_PD
] = { .name
= "dhcpv6_pd", .type
= BLOBMSG_TYPE_BOOL
},
104 [IFACE_ATTR_DHCPV6_NA
] = { .name
= "dhcpv6_na", .type
= BLOBMSG_TYPE_BOOL
},
105 [IFACE_ATTR_PD_MANAGER
] = { .name
= "pd_manager", .type
= BLOBMSG_TYPE_STRING
},
106 [IFACE_ATTR_PD_CER
] = { .name
= "pd_cer", .type
= BLOBMSG_TYPE_STRING
},
107 [IFACE_ATTR_RA_DEFAULT
] = { .name
= "ra_default", .type
= BLOBMSG_TYPE_INT32
},
108 [IFACE_ATTR_RA_MANAGEMENT
] = { .name
= "ra_management", .type
= BLOBMSG_TYPE_INT32
},
109 [IFACE_ATTR_RA_OFFLINK
] = { .name
= "ra_offlink", .type
= BLOBMSG_TYPE_BOOL
},
110 [IFACE_ATTR_RA_PREFERENCE
] = { .name
= "ra_preference", .type
= BLOBMSG_TYPE_STRING
},
111 [IFACE_ATTR_RA_ADVROUTER
] = { .name
= "ra_advrouter", .type
= BLOBMSG_TYPE_BOOL
},
112 [IFACE_ATTR_RA_MININTERVAL
] = { .name
= "ra_mininterval", .type
= BLOBMSG_TYPE_INT32
},
113 [IFACE_ATTR_RA_MAXINTERVAL
] = { .name
= "ra_maxinterval", .type
= BLOBMSG_TYPE_INT32
},
114 [IFACE_ATTR_RA_LIFETIME
] = { .name
= "ra_lifetime", .type
= BLOBMSG_TYPE_INT32
},
115 [IFACE_ATTR_RA_USELEASETIME
] = { .name
= "ra_useleasetime", .type
= BLOBMSG_TYPE_BOOL
},
116 [IFACE_ATTR_RA_REACHABLETIME
] = { .name
= "ra_reachabletime", .type
= BLOBMSG_TYPE_INT32
},
117 [IFACE_ATTR_RA_RETRANSTIME
] = { .name
= "ra_retranstime", .type
= BLOBMSG_TYPE_INT32
},
118 [IFACE_ATTR_RA_HOPLIMIT
] = { .name
= "ra_hoplimit", .type
= BLOBMSG_TYPE_INT32
},
119 [IFACE_ATTR_RA_MTU
] = { .name
= "ra_mtu", .type
= BLOBMSG_TYPE_INT32
},
120 [IFACE_ATTR_RA_DNS
] = { .name
= "ra_dns", .type
= BLOBMSG_TYPE_BOOL
},
121 [IFACE_ATTR_NDPROXY_ROUTING
] = { .name
= "ndproxy_routing", .type
= BLOBMSG_TYPE_BOOL
},
122 [IFACE_ATTR_NDPROXY_SLAVE
] = { .name
= "ndproxy_slave", .type
= BLOBMSG_TYPE_BOOL
},
123 [IFACE_ATTR_PREFIX_FILTER
] = { .name
= "prefix_filter", .type
= BLOBMSG_TYPE_STRING
},
126 static const struct uci_blob_param_info iface_attr_info
[IFACE_ATTR_MAX
] = {
127 [IFACE_ATTR_UPSTREAM
] = { .type
= BLOBMSG_TYPE_STRING
},
128 [IFACE_ATTR_DNS
] = { .type
= BLOBMSG_TYPE_STRING
},
129 [IFACE_ATTR_DOMAIN
] = { .type
= BLOBMSG_TYPE_STRING
},
132 const struct uci_blob_param_list interface_attr_list
= {
133 .n_params
= IFACE_ATTR_MAX
,
134 .params
= iface_attrs
,
135 .info
= iface_attr_info
,
143 LEASE_ATTR_LEASETIME
,
148 static const struct blobmsg_policy lease_attrs
[LEASE_ATTR_MAX
] = {
149 [LEASE_ATTR_IP
] = { .name
= "ip", .type
= BLOBMSG_TYPE_STRING
},
150 [LEASE_ATTR_MAC
] = { .name
= "mac", .type
= BLOBMSG_TYPE_STRING
},
151 [LEASE_ATTR_DUID
] = { .name
= "duid", .type
= BLOBMSG_TYPE_STRING
},
152 [LEASE_ATTR_HOSTID
] = { .name
= "hostid", .type
= BLOBMSG_TYPE_STRING
},
153 [LEASE_ATTR_LEASETIME
] = { .name
= "leasetime", .type
= BLOBMSG_TYPE_STRING
},
154 [LEASE_ATTR_NAME
] = { .name
= "name", .type
= BLOBMSG_TYPE_STRING
},
157 const struct uci_blob_param_list lease_attr_list
= {
158 .n_params
= LEASE_ATTR_MAX
,
159 .params
= lease_attrs
,
164 ODHCPD_ATTR_MAINDHCP
,
165 ODHCPD_ATTR_LEASEFILE
,
166 ODHCPD_ATTR_LEASETRIGGER
,
167 ODHCPD_ATTR_LOGLEVEL
,
171 static const struct blobmsg_policy odhcpd_attrs
[ODHCPD_ATTR_MAX
] = {
172 [ODHCPD_ATTR_LEGACY
] = { .name
= "legacy", .type
= BLOBMSG_TYPE_BOOL
},
173 [ODHCPD_ATTR_MAINDHCP
] = { .name
= "maindhcp", .type
= BLOBMSG_TYPE_BOOL
},
174 [ODHCPD_ATTR_LEASEFILE
] = { .name
= "leasefile", .type
= BLOBMSG_TYPE_STRING
},
175 [ODHCPD_ATTR_LEASETRIGGER
] = { .name
= "leasetrigger", .type
= BLOBMSG_TYPE_STRING
},
176 [ODHCPD_ATTR_LOGLEVEL
] = { .name
= "loglevel", .type
= BLOBMSG_TYPE_INT32
},
179 const struct uci_blob_param_list odhcpd_attr_list
= {
180 .n_params
= ODHCPD_ATTR_MAX
,
181 .params
= odhcpd_attrs
,
184 static int mkdir_p(char *dir
, mode_t mask
)
186 char *l
= strrchr(dir
, '/');
194 if (mkdir_p(dir
, mask
))
199 ret
= mkdir(dir
, mask
);
200 if (ret
&& errno
== EEXIST
)
204 syslog(LOG_ERR
, "mkdir(%s, %d) failed: %m\n", dir
, mask
);
209 static void set_interface_defaults(struct interface
*iface
)
211 iface
->learn_routes
= 1;
212 iface
->dhcpv4_leasetime
= 43200;
213 iface
->dhcpv6_assignall
= true;
214 iface
->dhcpv6_pd
= true;
215 iface
->dhcpv6_na
= true;
216 iface
->ra_managed
= RA_MANAGED_MFLAG
;
217 iface
->ra_maxinterval
= 600;
218 iface
->ra_mininterval
= iface
->ra_maxinterval
/3;
219 iface
->ra_lifetime
= -1;
220 iface
->ra_dns
= true;
223 static void clean_interface(struct interface
*iface
)
227 free(iface
->upstream
);
228 free(iface
->dhcpv4_router
);
229 free(iface
->dhcpv4_dns
);
230 free(iface
->dhcpv6_raw
);
231 free(iface
->filter_class
);
232 memset(&iface
->ra
, 0, sizeof(*iface
) - offsetof(struct interface
, ra
));
233 set_interface_defaults(iface
);
236 static void close_interface(struct interface
*iface
)
238 avl_delete(&interfaces
, &iface
->avl
);
240 router_setup_interface(iface
, false);
241 dhcpv6_setup_interface(iface
, false);
242 ndp_setup_interface(iface
, false);
243 #ifdef DHCPV4_SUPPORT
244 dhcpv4_setup_interface(iface
, false);
247 clean_interface(iface
);
254 static int parse_mode(const char *mode
)
256 if (!strcmp(mode
, "disabled"))
257 return MODE_DISABLED
;
258 else if (!strcmp(mode
, "server"))
260 else if (!strcmp(mode
, "relay"))
262 else if (!strcmp(mode
, "hybrid"))
268 static void set_config(struct uci_section
*s
)
270 struct blob_attr
*tb
[ODHCPD_ATTR_MAX
], *c
;
272 blob_buf_init(&b
, 0);
273 uci_to_blob(&b
, s
, &odhcpd_attr_list
);
274 blobmsg_parse(odhcpd_attrs
, ODHCPD_ATTR_MAX
, tb
, blob_data(b
.head
), blob_len(b
.head
));
276 if ((c
= tb
[ODHCPD_ATTR_LEGACY
]))
277 config
.legacy
= blobmsg_get_bool(c
);
279 if ((c
= tb
[ODHCPD_ATTR_MAINDHCP
]))
280 config
.main_dhcpv4
= blobmsg_get_bool(c
);
282 if ((c
= tb
[ODHCPD_ATTR_LEASEFILE
])) {
283 free(config
.dhcp_statefile
);
284 config
.dhcp_statefile
= strdup(blobmsg_get_string(c
));
287 if ((c
= tb
[ODHCPD_ATTR_LEASETRIGGER
])) {
288 free(config
.dhcp_cb
);
289 config
.dhcp_cb
= strdup(blobmsg_get_string(c
));
292 if ((c
= tb
[ODHCPD_ATTR_LOGLEVEL
])) {
293 int log_level
= (blobmsg_get_u32(c
) & LOG_PRIMASK
);
295 if (config
.log_level
!= log_level
) {
296 config
.log_level
= log_level
;
297 setlogmask(LOG_UPTO(config
.log_level
));
302 static double parse_leasetime(struct blob_attr
*c
) {
303 char *val
= blobmsg_get_string(c
), *endptr
= NULL
;
304 double time
= strcmp(val
, "infinite") ? strtod(val
, &endptr
) : UINT32_MAX
;
306 if (time
&& endptr
&& endptr
[0]) {
307 if (endptr
[0] == 's')
309 else if (endptr
[0] == 'm')
311 else if (endptr
[0] == 'h')
313 else if (endptr
[0] == 'd')
315 else if (endptr
[0] == 'w')
316 time
*= 7 * 24 * 3600;
330 static void free_lease(struct lease
*l
)
336 static int set_lease(struct uci_section
*s
)
338 struct blob_attr
*tb
[LEASE_ATTR_MAX
], *c
;
343 blob_buf_init(&b
, 0);
344 uci_to_blob(&b
, s
, &lease_attr_list
);
345 blobmsg_parse(lease_attrs
, LEASE_ATTR_MAX
, tb
, blob_data(b
.head
), blob_len(b
.head
));
347 if ((c
= tb
[LEASE_ATTR_DUID
]))
348 duidlen
= (blobmsg_data_len(c
) - 1) / 2;
350 l
= calloc_a(sizeof(*l
), &duid
, duidlen
);
354 if ((c
= tb
[LEASE_ATTR_MAC
]))
355 if (!ether_aton_r(blobmsg_get_string(c
), &l
->mac
))
358 if ((c
= tb
[LEASE_ATTR_DUID
])) {
362 len
= odhcpd_unhexlify(l
->duid
, duidlen
, blobmsg_get_string(c
));
370 if ((c
= tb
[LEASE_ATTR_NAME
])) {
371 l
->hostname
= strdup(blobmsg_get_string(c
));
372 if (!l
->hostname
|| !odhcpd_valid_hostname(l
->hostname
))
376 if ((c
= tb
[LEASE_ATTR_IP
]))
377 if (inet_pton(AF_INET
, blobmsg_get_string(c
), &l
->ipaddr
) < 0)
380 if ((c
= tb
[LEASE_ATTR_HOSTID
])) {
382 l
->hostid
= strtoul(blobmsg_get_string(c
), NULL
, 16);
386 uint32_t i4a
= ntohl(l
->ipaddr
) & 0xff;
387 l
->hostid
= ((i4a
/ 100) << 8) | (((i4a
% 100) / 10) << 4) | (i4a
% 10);
390 if ((c
= tb
[LEASE_ATTR_LEASETIME
])) {
391 double time
= parse_leasetime(c
);
398 INIT_LIST_HEAD(&l
->assignments
);
399 vlist_add(&leases
, &l
->node
, l
);
409 int config_parse_interface(void *data
, size_t len
, const char *name
, bool overwrite
)
411 struct interface
*iface
;
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 iface
= avl_find_element(&interfaces
, name
, iface
, avl
);
427 iface
= calloc_a(sizeof(*iface
), &new_name
, strlen(name
) + 1);
431 iface
->name
= strcpy(new_name
, name
);
432 iface
->avl
.key
= iface
->name
;
433 iface
->router_event
.uloop
.fd
= -1;
434 iface
->dhcpv6_event
.uloop
.fd
= -1;
435 iface
->ndp_event
.uloop
.fd
= -1;
436 iface
->ndp_ping_fd
= -1;
437 iface
->dhcpv4_event
.uloop
.fd
= -1;
438 set_interface_defaults(iface
);
440 avl_insert(&interfaces
, &iface
->avl
);
441 get_addrs
= overwrite
= true;
444 const char *ifname
= NULL
;
446 if ((c
= tb
[IFACE_ATTR_IFNAME
]))
447 ifname
= blobmsg_get_string(c
);
448 else if ((c
= tb
[IFACE_ATTR_NETWORKID
]))
449 ifname
= blobmsg_get_string(c
);
453 if (overwrite
|| !iface
->ifname
)
454 ifname
= ubus_get_ifname(name
);
457 if (!iface
->ifname
&& !ifname
)
462 iface
->ifname
= strdup(ifname
);
467 if (!iface
->ifindex
&&
468 (iface
->ifindex
= if_nametoindex(iface
->ifname
)) <= 0)
473 ssize_t len
= netlink_get_interface_addrs(iface
->ifindex
,
474 true, &iface
->addr6
);
477 iface
->addr6_len
= len
;
479 len
= netlink_get_interface_addrs(iface
->ifindex
,
480 false, &iface
->addr4
);
482 iface
->addr4_len
= len
;
487 if ((c
= tb
[IFACE_ATTR_DYNAMICDHCP
]))
488 iface
->no_dynamic_dhcp
= !blobmsg_get_bool(c
);
490 if (overwrite
&& (c
= tb
[IFACE_ATTR_IGNORE
]))
491 iface
->ignore
= blobmsg_get_bool(c
);
493 if ((c
= tb
[IFACE_ATTR_LEASETIME
])) {
494 double time
= parse_leasetime(c
);
498 iface
->dhcpv4_leasetime
= time
;
501 if ((c
= tb
[IFACE_ATTR_START
])) {
502 iface
->dhcpv4_start
.s_addr
= htonl(blobmsg_get_u32(c
));
504 if (config
.main_dhcpv4
&& config
.legacy
)
505 iface
->dhcpv4
= MODE_SERVER
;
508 if ((c
= tb
[IFACE_ATTR_LIMIT
]))
509 iface
->dhcpv4_end
.s_addr
= htonl(
510 ntohl(iface
->dhcpv4_start
.s_addr
) + blobmsg_get_u32(c
));
512 if ((c
= tb
[IFACE_ATTR_MASTER
]))
513 iface
->master
= blobmsg_get_bool(c
);
515 if (overwrite
&& (c
= tb
[IFACE_ATTR_UPSTREAM
])) {
516 struct blob_attr
*cur
;
519 blobmsg_for_each_attr(cur
, c
, rem
) {
520 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, false))
523 iface
->upstream
= realloc(iface
->upstream
,
524 iface
->upstream_len
+ blobmsg_data_len(cur
));
525 if (!iface
->upstream
)
528 memcpy(iface
->upstream
+ iface
->upstream_len
, blobmsg_get_string(cur
), blobmsg_data_len(cur
));
529 iface
->upstream_len
+= blobmsg_data_len(cur
);
534 if ((c
= tb
[IFACE_ATTR_RA
])) {
535 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0)
541 if ((c
= tb
[IFACE_ATTR_DHCPV4
])) {
542 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0) {
543 if (config
.main_dhcpv4
)
544 iface
->dhcpv4
= mode
;
550 if ((c
= tb
[IFACE_ATTR_DHCPV6
])) {
551 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0)
552 iface
->dhcpv6
= mode
;
557 if ((c
= tb
[IFACE_ATTR_NDP
])) {
558 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0)
564 if ((c
= tb
[IFACE_ATTR_ROUTER
])) {
565 struct blob_attr
*cur
;
568 blobmsg_for_each_attr(cur
, c
, rem
) {
569 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, false))
572 struct in_addr addr4
;
573 if (inet_pton(AF_INET
, blobmsg_get_string(cur
), &addr4
) == 1) {
574 iface
->dhcpv4_router
= realloc(iface
->dhcpv4_router
,
575 (++iface
->dhcpv4_router_cnt
) * sizeof(*iface
->dhcpv4_router
));
576 if (!iface
->dhcpv4_router
)
579 iface
->dhcpv4_router
[iface
->dhcpv4_router_cnt
- 1] = addr4
;
585 if ((c
= tb
[IFACE_ATTR_DNS
])) {
586 struct blob_attr
*cur
;
589 iface
->always_rewrite_dns
= true;
590 blobmsg_for_each_attr(cur
, c
, rem
) {
591 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, false))
594 struct in_addr addr4
;
595 struct in6_addr addr6
;
596 if (inet_pton(AF_INET
, blobmsg_get_string(cur
), &addr4
) == 1) {
597 if (addr4
.s_addr
== INADDR_ANY
)
600 iface
->dhcpv4_dns
= realloc(iface
->dhcpv4_dns
,
601 (++iface
->dhcpv4_dns_cnt
) * sizeof(*iface
->dhcpv4_dns
));
602 if (!iface
->dhcpv4_dns
)
605 iface
->dhcpv4_dns
[iface
->dhcpv4_dns_cnt
- 1] = addr4
;
606 } else if (inet_pton(AF_INET6
, blobmsg_get_string(cur
), &addr6
) == 1) {
607 if (IN6_IS_ADDR_UNSPECIFIED(&addr6
))
610 iface
->dns
= realloc(iface
->dns
,
611 (++iface
->dns_cnt
) * sizeof(*iface
->dns
));
615 iface
->dns
[iface
->dns_cnt
- 1] = addr6
;
621 if ((c
= tb
[IFACE_ATTR_DOMAIN
])) {
622 struct blob_attr
*cur
;
625 blobmsg_for_each_attr(cur
, c
, rem
) {
626 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, false))
630 char *domain
= blobmsg_get_string(cur
);
631 size_t domainlen
= strlen(domain
);
632 if (domainlen
> 0 && domain
[domainlen
- 1] == '.')
633 domain
[domainlen
- 1] = 0;
635 int len
= dn_comp(domain
, buf
, sizeof(buf
), NULL
, NULL
);
639 iface
->search
= realloc(iface
->search
, iface
->search_len
+ len
);
643 memcpy(&iface
->search
[iface
->search_len
], buf
, len
);
644 iface
->search_len
+= len
;
648 if ((c
= tb
[IFACE_ATTR_FILTER_CLASS
])) {
649 iface
->filter_class
= realloc(iface
->filter_class
, blobmsg_data_len(c
) + 1);
650 memcpy(iface
->filter_class
, blobmsg_get_string(c
), blobmsg_data_len(c
) + 1);
653 if ((c
= tb
[IFACE_ATTR_DHCPV4_FORCERECONF
]))
654 iface
->dhcpv4_forcereconf
= blobmsg_get_bool(c
);
656 if ((c
= tb
[IFACE_ATTR_DHCPV6_RAW
])) {
657 iface
->dhcpv6_raw_len
= blobmsg_data_len(c
) / 2;
658 iface
->dhcpv6_raw
= realloc(iface
->dhcpv6_raw
, iface
->dhcpv6_raw_len
);
659 odhcpd_unhexlify(iface
->dhcpv6_raw
, iface
->dhcpv6_raw_len
, blobmsg_get_string(c
));
662 if ((c
= tb
[IFACE_ATTR_DHCPV6_ASSIGNALL
]))
663 iface
->dhcpv6_assignall
= blobmsg_get_bool(c
);
665 if ((c
= tb
[IFACE_ATTR_DHCPV6_PD
]))
666 iface
->dhcpv6_pd
= blobmsg_get_bool(c
);
668 if ((c
= tb
[IFACE_ATTR_DHCPV6_NA
]))
669 iface
->dhcpv6_na
= blobmsg_get_bool(c
);
671 if ((c
= tb
[IFACE_ATTR_RA_DEFAULT
]))
672 iface
->default_router
= blobmsg_get_u32(c
);
674 if ((c
= tb
[IFACE_ATTR_RA_MANAGEMENT
]))
675 iface
->ra_managed
= blobmsg_get_u32(c
);
677 if ((c
= tb
[IFACE_ATTR_RA_REACHABLETIME
])) {
678 uint32_t ra_reachabletime
= blobmsg_get_u32(c
);
679 if (ra_reachabletime
> 3600000)
682 iface
->ra_reachabletime
= ra_reachabletime
;
685 if ((c
= tb
[IFACE_ATTR_RA_RETRANSTIME
])) {
686 uint32_t ra_retranstime
= blobmsg_get_u32(c
);
687 if (ra_retranstime
> 60000)
690 iface
->ra_retranstime
= ra_retranstime
;
693 if ((c
= tb
[IFACE_ATTR_RA_HOPLIMIT
])) {
694 uint32_t ra_hoplimit
= blobmsg_get_u32(c
);
695 if (ra_hoplimit
> 255)
698 iface
->ra_hoplimit
= ra_hoplimit
;
701 if ((c
= tb
[IFACE_ATTR_RA_MTU
])) {
702 uint32_t ra_mtu
= blobmsg_get_u32(c
);
703 if (ra_mtu
< 1280 || ra_mtu
> 65535)
706 iface
->ra_mtu
= ra_mtu
;
709 if ((c
= tb
[IFACE_ATTR_RA_OFFLINK
]))
710 iface
->ra_not_onlink
= blobmsg_get_bool(c
);
712 if ((c
= tb
[IFACE_ATTR_RA_ADVROUTER
]))
713 iface
->ra_advrouter
= blobmsg_get_bool(c
);
715 if ((c
= tb
[IFACE_ATTR_RA_MININTERVAL
]))
716 iface
->ra_mininterval
= blobmsg_get_u32(c
);
718 if ((c
= tb
[IFACE_ATTR_RA_MAXINTERVAL
]))
719 iface
->ra_maxinterval
= blobmsg_get_u32(c
);
721 if ((c
= tb
[IFACE_ATTR_RA_LIFETIME
]))
722 iface
->ra_lifetime
= blobmsg_get_u32(c
);
724 if ((c
= tb
[IFACE_ATTR_RA_USELEASETIME
]))
725 iface
->ra_useleasetime
= blobmsg_get_bool(c
);
727 if ((c
= tb
[IFACE_ATTR_RA_DNS
]))
728 iface
->ra_dns
= blobmsg_get_bool(c
);
730 if ((c
= tb
[IFACE_ATTR_RA_PREFERENCE
])) {
731 const char *prio
= blobmsg_get_string(c
);
733 if (!strcmp(prio
, "high"))
734 iface
->route_preference
= 1;
735 else if (!strcmp(prio
, "low"))
736 iface
->route_preference
= -1;
737 else if (!strcmp(prio
, "medium") || !strcmp(prio
, "default"))
738 iface
->route_preference
= 0;
743 if ((c
= tb
[IFACE_ATTR_PD_MANAGER
]))
744 strncpy(iface
->dhcpv6_pd_manager
, blobmsg_get_string(c
),
745 sizeof(iface
->dhcpv6_pd_manager
) - 1);
747 if ((c
= tb
[IFACE_ATTR_PD_CER
]) &&
748 inet_pton(AF_INET6
, blobmsg_get_string(c
), &iface
->dhcpv6_pd_cer
) < 1)
751 if ((c
= tb
[IFACE_ATTR_NDPROXY_ROUTING
]))
752 iface
->learn_routes
= blobmsg_get_bool(c
);
754 if ((c
= tb
[IFACE_ATTR_NDPROXY_SLAVE
]))
755 iface
->external
= blobmsg_get_bool(c
);
757 if ((c
= tb
[IFACE_ATTR_PREFIX_FILTER
])) {
758 const char *str
= blobmsg_get_string(c
);
759 char *astr
= malloc(strlen(str
) + 1);
763 if (!astr
|| !strcpy(astr
, str
) ||
764 (delim
= strchr(astr
, '/')) == NULL
|| (*(delim
++) = 0) ||
765 sscanf(delim
, "%i", &l
) == 0 || l
> 128 ||
766 inet_pton(AF_INET6
, astr
, &iface
->pio_filter_addr
) == 0)
767 iface
->pio_filter_length
= 0;
769 iface
->pio_filter_length
= l
;
778 close_interface(iface
);
782 static int set_interface(struct uci_section
*s
)
784 blob_buf_init(&b
, 0);
785 uci_to_blob(&b
, s
, &interface_attr_list
);
787 return config_parse_interface(blob_data(b
.head
), blob_len(b
.head
), s
->e
.name
, true);
790 static void lease_delete_assignments(struct lease
*l
, bool v6
)
792 struct dhcp_assignment
*a
, *tmp
;
793 unsigned int flag
= v6
? OAF_DHCPV6
: OAF_DHCPV4
;
795 list_for_each_entry_safe(a
, tmp
, &l
->assignments
, lease_list
) {
801 static void lease_update_assignments(struct lease
*l
)
803 struct dhcp_assignment
*a
;
805 list_for_each_entry(a
, &l
->assignments
, lease_list
) {
811 a
->hostname
= strdup(l
->hostname
);
813 a
->leasetime
= l
->leasetime
;
817 static int lease_cmp(const void *k1
, const void *k2
, _unused
void *ptr
)
819 const struct lease
*l1
= k1
, *l2
= k2
;
822 if (l1
->duid_len
!= l2
->duid_len
)
823 return l1
->duid_len
- l2
->duid_len
;
825 if (l1
->duid_len
&& l2
->duid_len
)
826 cmp
= memcmp(l1
->duid
, l2
->duid
, l1
->duid_len
);
831 return memcmp(l1
->mac
.ether_addr_octet
, l2
->mac
.ether_addr_octet
,
832 sizeof(l1
->mac
.ether_addr_octet
));
835 static void lease_change_config(struct lease
*l_old
, struct lease
*l_new
)
839 if ((!!l_new
->hostname
!= !!l_old
->hostname
) ||
840 (l_new
->hostname
&& strcmp(l_new
->hostname
, l_old
->hostname
))) {
841 free(l_old
->hostname
);
842 l_old
->hostname
= NULL
;
845 l_old
->hostname
= strdup(l_new
->hostname
);
850 if (l_old
->leasetime
!= l_new
->leasetime
) {
851 l_old
->leasetime
= l_new
->leasetime
;
855 if (l_old
->ipaddr
!= l_new
->ipaddr
) {
856 l_old
->ipaddr
= l_new
->ipaddr
;
857 lease_delete_assignments(l_old
, false);
860 if (l_old
->hostid
!= l_new
->hostid
) {
861 l_old
->hostid
= l_new
->hostid
;
862 lease_delete_assignments(l_old
, true);
866 lease_update_assignments(l_old
);
871 static void lease_delete(struct lease
*l
)
873 struct dhcp_assignment
*a
;
875 list_for_each_entry(a
, &l
->assignments
, lease_list
)
881 static void lease_update(_unused
struct vlist_tree
*tree
, struct vlist_node
*node_new
,
882 struct vlist_node
*node_old
)
884 struct lease
*lease_new
= container_of(node_new
, struct lease
, node
);
885 struct lease
*lease_old
= container_of(node_old
, struct lease
, node
);
887 if (node_old
&& node_new
)
888 lease_change_config(lease_old
, lease_new
);
890 lease_delete(lease_old
);
893 struct lease
*config_find_lease_by_duid(const uint8_t *duid
, const uint16_t len
)
897 vlist_for_each_element(&leases
, l
, node
) {
898 if (l
->duid_len
== len
&& !memcmp(l
->duid
, duid
, len
))
905 struct lease
*config_find_lease_by_mac(const uint8_t *mac
)
909 vlist_for_each_element(&leases
, l
, node
) {
910 if (!memcmp(l
->mac
.ether_addr_octet
, mac
,
911 sizeof(l
->mac
.ether_addr_octet
)))
918 struct lease
*config_find_lease_by_hostid(const uint32_t hostid
)
922 vlist_for_each_element(&leases
, l
, node
) {
923 if (l
->hostid
== hostid
)
930 struct lease
*config_find_lease_by_ipaddr(const uint32_t ipaddr
)
934 vlist_for_each_element(&leases
, l
, node
) {
935 if (l
->ipaddr
== ipaddr
)
942 void odhcpd_reload(void)
944 struct uci_context
*uci
= uci_alloc_context();
945 struct interface
*master
= NULL
, *i
, *tmp
;
950 vlist_update(&leases
);
951 avl_for_each_element(&interfaces
, i
, avl
)
954 struct uci_package
*dhcp
= NULL
;
955 if (!uci_load(uci
, "dhcp", &dhcp
)) {
956 struct uci_element
*e
;
957 uci_foreach_element(&dhcp
->sections
, e
) {
958 struct uci_section
*s
= uci_to_section(e
);
959 if (!strcmp(s
->type
, "host"))
961 else if (!strcmp(s
->type
, "odhcpd"))
965 uci_foreach_element(&dhcp
->sections
, e
) {
966 struct uci_section
*s
= uci_to_section(e
);
967 if (!strcmp(s
->type
, "dhcp"))
972 if (config
.dhcp_statefile
) {
973 char *path
= strdup(config
.dhcp_statefile
);
975 mkdir_p(dirname(path
), 0755);
979 vlist_flush(&leases
);
982 ubus_apply_network();
985 bool any_dhcpv6_slave
= false, any_ra_slave
= false, any_ndp_slave
= false;
988 avl_for_each_element(&interfaces
, i
, avl
) {
992 if (i
->dhcpv6
== MODE_HYBRID
|| i
->dhcpv6
== MODE_RELAY
)
993 any_dhcpv6_slave
= true;
995 if (i
->ra
== MODE_HYBRID
|| i
->ra
== MODE_RELAY
)
998 if (i
->ndp
== MODE_HYBRID
|| i
->ndp
== MODE_RELAY
)
999 any_ndp_slave
= true;
1002 /* Evaluate hybrid mode for master */
1003 avl_for_each_element(&interfaces
, i
, avl
) {
1007 enum odhcpd_mode hybrid_mode
= MODE_DISABLED
;
1009 if (!ubus_has_prefix(i
->name
, i
->ifname
))
1010 hybrid_mode
= MODE_RELAY
;
1013 if (i
->dhcpv6
== MODE_HYBRID
)
1014 i
->dhcpv6
= hybrid_mode
;
1016 if (i
->dhcpv6
== MODE_RELAY
&& !any_dhcpv6_slave
)
1017 i
->dhcpv6
= MODE_DISABLED
;
1019 if (i
->ra
== MODE_HYBRID
)
1020 i
->ra
= hybrid_mode
;
1022 if (i
->ra
== MODE_RELAY
&& !any_ra_slave
)
1023 i
->ra
= MODE_DISABLED
;
1025 if (i
->ndp
== MODE_HYBRID
)
1026 i
->ndp
= hybrid_mode
;
1028 if (i
->ndp
== MODE_RELAY
&& !any_ndp_slave
)
1029 i
->ndp
= MODE_DISABLED
;
1031 if (i
->dhcpv6
== MODE_RELAY
|| i
->ra
== MODE_RELAY
|| i
->ndp
== MODE_RELAY
)
1036 avl_for_each_element_safe(&interfaces
, i
, avl
, tmp
) {
1038 /* Resolve hybrid mode */
1039 if (i
->dhcpv6
== MODE_HYBRID
)
1040 i
->dhcpv6
= (master
&& master
->dhcpv6
== MODE_RELAY
) ?
1041 MODE_RELAY
: MODE_SERVER
;
1043 if (i
->ra
== MODE_HYBRID
)
1044 i
->ra
= (master
&& master
->ra
== MODE_RELAY
) ?
1045 MODE_RELAY
: MODE_SERVER
;
1047 if (i
->ndp
== MODE_HYBRID
)
1048 i
->ndp
= (master
&& master
->ndp
== MODE_RELAY
) ?
1049 MODE_RELAY
: MODE_DISABLED
;
1051 router_setup_interface(i
, !i
->ignore
|| i
->ra
!= MODE_DISABLED
);
1052 dhcpv6_setup_interface(i
, !i
->ignore
|| i
->dhcpv6
!= MODE_DISABLED
);
1053 ndp_setup_interface(i
, !i
->ignore
|| i
->ndp
!= MODE_DISABLED
);
1054 #ifdef DHCPV4_SUPPORT
1055 dhcpv4_setup_interface(i
, !i
->ignore
|| i
->dhcpv4
!= MODE_DISABLED
);
1061 uci_unload(uci
, dhcp
);
1062 uci_free_context(uci
);
1065 static void handle_signal(int signal
)
1069 if (signal
== SIGHUP
) {
1070 if (write(reload_pipe
[1], b
, sizeof(b
)) < 0) {}
1075 static void reload_cb(struct uloop_fd
*u
, _unused
unsigned int events
)
1078 if (read(u
->fd
, b
, sizeof(b
)) < 0) {}
1083 static struct uloop_fd reload_fd
= { .cb
= reload_cb
};
1085 void odhcpd_run(void)
1087 if (pipe2(reload_pipe
, O_NONBLOCK
| O_CLOEXEC
) < 0) {}
1089 reload_fd
.fd
= reload_pipe
[0];
1090 uloop_fd_add(&reload_fd
, ULOOP_READ
);
1092 signal(SIGTERM
, handle_signal
);
1093 signal(SIGINT
, handle_signal
);
1094 signal(SIGHUP
, handle_signal
);