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] = { -1, -1 };
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_WARNING
};
35 #define START_DEFAULT 100
36 #define LIMIT_DEFAULT 150
38 #define OAF_DHCPV6 (OAF_DHCPV6_NA | OAF_DHCPV6_PD)
44 IFACE_ATTR_DYNAMICDHCP
,
56 IFACE_ATTR_DNS_SERVICE
,
58 IFACE_ATTR_FILTER_CLASS
,
59 IFACE_ATTR_DHCPV4_FORCERECONF
,
60 IFACE_ATTR_DHCPV6_RAW
,
61 IFACE_ATTR_DHCPV6_ASSIGNALL
,
64 IFACE_ATTR_RA_DEFAULT
,
65 IFACE_ATTR_RA_MANAGEMENT
,
68 IFACE_ATTR_RA_OFFLINK
,
69 IFACE_ATTR_RA_PREFERENCE
,
70 IFACE_ATTR_RA_ADVROUTER
,
71 IFACE_ATTR_RA_MININTERVAL
,
72 IFACE_ATTR_RA_MAXINTERVAL
,
73 IFACE_ATTR_RA_LIFETIME
,
74 IFACE_ATTR_RA_USELEASETIME
,
75 IFACE_ATTR_RA_REACHABLETIME
,
76 IFACE_ATTR_RA_RETRANSTIME
,
77 IFACE_ATTR_RA_HOPLIMIT
,
80 IFACE_ATTR_PD_MANAGER
,
82 IFACE_ATTR_NDPROXY_ROUTING
,
83 IFACE_ATTR_NDPROXY_SLAVE
,
84 IFACE_ATTR_PREFIX_FILTER
,
88 static const struct blobmsg_policy iface_attrs
[IFACE_ATTR_MAX
] = {
89 [IFACE_ATTR_INTERFACE
] = { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
90 [IFACE_ATTR_IFNAME
] = { .name
= "ifname", .type
= BLOBMSG_TYPE_STRING
},
91 [IFACE_ATTR_NETWORKID
] = { .name
= "networkid", .type
= BLOBMSG_TYPE_STRING
},
92 [IFACE_ATTR_DYNAMICDHCP
] = { .name
= "dynamicdhcp", .type
= BLOBMSG_TYPE_BOOL
},
93 [IFACE_ATTR_LEASETIME
] = { .name
= "leasetime", .type
= BLOBMSG_TYPE_STRING
},
94 [IFACE_ATTR_START
] = { .name
= "start", .type
= BLOBMSG_TYPE_INT32
},
95 [IFACE_ATTR_LIMIT
] = { .name
= "limit", .type
= BLOBMSG_TYPE_INT32
},
96 [IFACE_ATTR_MASTER
] = { .name
= "master", .type
= BLOBMSG_TYPE_BOOL
},
97 [IFACE_ATTR_UPSTREAM
] = { .name
= "upstream", .type
= BLOBMSG_TYPE_ARRAY
},
98 [IFACE_ATTR_RA
] = { .name
= "ra", .type
= BLOBMSG_TYPE_STRING
},
99 [IFACE_ATTR_DHCPV4
] = { .name
= "dhcpv4", .type
= BLOBMSG_TYPE_STRING
},
100 [IFACE_ATTR_DHCPV6
] = { .name
= "dhcpv6", .type
= BLOBMSG_TYPE_STRING
},
101 [IFACE_ATTR_NDP
] = { .name
= "ndp", .type
= BLOBMSG_TYPE_STRING
},
102 [IFACE_ATTR_ROUTER
] = { .name
= "router", .type
= BLOBMSG_TYPE_ARRAY
},
103 [IFACE_ATTR_DNS
] = { .name
= "dns", .type
= BLOBMSG_TYPE_ARRAY
},
104 [IFACE_ATTR_DNS_SERVICE
] = { .name
= "dns_service", .type
= BLOBMSG_TYPE_BOOL
},
105 [IFACE_ATTR_DOMAIN
] = { .name
= "domain", .type
= BLOBMSG_TYPE_ARRAY
},
106 [IFACE_ATTR_FILTER_CLASS
] = { .name
= "filter_class", .type
= BLOBMSG_TYPE_STRING
},
107 [IFACE_ATTR_DHCPV4_FORCERECONF
] = { .name
= "dhcpv4_forcereconf", .type
= BLOBMSG_TYPE_BOOL
},
108 [IFACE_ATTR_DHCPV6_RAW
] = { .name
= "dhcpv6_raw", .type
= BLOBMSG_TYPE_STRING
},
109 [IFACE_ATTR_DHCPV6_ASSIGNALL
] = { .name
="dhcpv6_assignall", .type
= BLOBMSG_TYPE_BOOL
},
110 [IFACE_ATTR_DHCPV6_PD
] = { .name
= "dhcpv6_pd", .type
= BLOBMSG_TYPE_BOOL
},
111 [IFACE_ATTR_DHCPV6_NA
] = { .name
= "dhcpv6_na", .type
= BLOBMSG_TYPE_BOOL
},
112 [IFACE_ATTR_PD_MANAGER
] = { .name
= "pd_manager", .type
= BLOBMSG_TYPE_STRING
},
113 [IFACE_ATTR_PD_CER
] = { .name
= "pd_cer", .type
= BLOBMSG_TYPE_STRING
},
114 [IFACE_ATTR_RA_DEFAULT
] = { .name
= "ra_default", .type
= BLOBMSG_TYPE_INT32
},
115 [IFACE_ATTR_RA_MANAGEMENT
] = { .name
= "ra_management", .type
= BLOBMSG_TYPE_INT32
},
116 [IFACE_ATTR_RA_FLAGS
] = { .name
= "ra_flags", . type
= BLOBMSG_TYPE_ARRAY
},
117 [IFACE_ATTR_RA_SLAAC
] = { .name
= "ra_slaac", .type
= BLOBMSG_TYPE_BOOL
},
118 [IFACE_ATTR_RA_OFFLINK
] = { .name
= "ra_offlink", .type
= BLOBMSG_TYPE_BOOL
},
119 [IFACE_ATTR_RA_PREFERENCE
] = { .name
= "ra_preference", .type
= BLOBMSG_TYPE_STRING
},
120 [IFACE_ATTR_RA_ADVROUTER
] = { .name
= "ra_advrouter", .type
= BLOBMSG_TYPE_BOOL
},
121 [IFACE_ATTR_RA_MININTERVAL
] = { .name
= "ra_mininterval", .type
= BLOBMSG_TYPE_INT32
},
122 [IFACE_ATTR_RA_MAXINTERVAL
] = { .name
= "ra_maxinterval", .type
= BLOBMSG_TYPE_INT32
},
123 [IFACE_ATTR_RA_LIFETIME
] = { .name
= "ra_lifetime", .type
= BLOBMSG_TYPE_INT32
},
124 [IFACE_ATTR_RA_USELEASETIME
] = { .name
= "ra_useleasetime", .type
= BLOBMSG_TYPE_BOOL
},
125 [IFACE_ATTR_RA_REACHABLETIME
] = { .name
= "ra_reachabletime", .type
= BLOBMSG_TYPE_INT32
},
126 [IFACE_ATTR_RA_RETRANSTIME
] = { .name
= "ra_retranstime", .type
= BLOBMSG_TYPE_INT32
},
127 [IFACE_ATTR_RA_HOPLIMIT
] = { .name
= "ra_hoplimit", .type
= BLOBMSG_TYPE_INT32
},
128 [IFACE_ATTR_RA_MTU
] = { .name
= "ra_mtu", .type
= BLOBMSG_TYPE_INT32
},
129 [IFACE_ATTR_RA_DNS
] = { .name
= "ra_dns", .type
= BLOBMSG_TYPE_BOOL
},
130 [IFACE_ATTR_NDPROXY_ROUTING
] = { .name
= "ndproxy_routing", .type
= BLOBMSG_TYPE_BOOL
},
131 [IFACE_ATTR_NDPROXY_SLAVE
] = { .name
= "ndproxy_slave", .type
= BLOBMSG_TYPE_BOOL
},
132 [IFACE_ATTR_PREFIX_FILTER
] = { .name
= "prefix_filter", .type
= BLOBMSG_TYPE_STRING
},
135 static const struct uci_blob_param_info iface_attr_info
[IFACE_ATTR_MAX
] = {
136 [IFACE_ATTR_UPSTREAM
] = { .type
= BLOBMSG_TYPE_STRING
},
137 [IFACE_ATTR_DNS
] = { .type
= BLOBMSG_TYPE_STRING
},
138 [IFACE_ATTR_DOMAIN
] = { .type
= BLOBMSG_TYPE_STRING
},
141 const struct uci_blob_param_list interface_attr_list
= {
142 .n_params
= IFACE_ATTR_MAX
,
143 .params
= iface_attrs
,
144 .info
= iface_attr_info
,
152 LEASE_ATTR_LEASETIME
,
157 static const struct blobmsg_policy lease_attrs
[LEASE_ATTR_MAX
] = {
158 [LEASE_ATTR_IP
] = { .name
= "ip", .type
= BLOBMSG_TYPE_STRING
},
159 [LEASE_ATTR_MAC
] = { .name
= "mac", .type
= BLOBMSG_TYPE_STRING
},
160 [LEASE_ATTR_DUID
] = { .name
= "duid", .type
= BLOBMSG_TYPE_STRING
},
161 [LEASE_ATTR_HOSTID
] = { .name
= "hostid", .type
= BLOBMSG_TYPE_STRING
},
162 [LEASE_ATTR_LEASETIME
] = { .name
= "leasetime", .type
= BLOBMSG_TYPE_STRING
},
163 [LEASE_ATTR_NAME
] = { .name
= "name", .type
= BLOBMSG_TYPE_STRING
},
166 const struct uci_blob_param_list lease_attr_list
= {
167 .n_params
= LEASE_ATTR_MAX
,
168 .params
= lease_attrs
,
173 ODHCPD_ATTR_MAINDHCP
,
174 ODHCPD_ATTR_LEASEFILE
,
175 ODHCPD_ATTR_LEASETRIGGER
,
176 ODHCPD_ATTR_LOGLEVEL
,
180 static const struct blobmsg_policy odhcpd_attrs
[ODHCPD_ATTR_MAX
] = {
181 [ODHCPD_ATTR_LEGACY
] = { .name
= "legacy", .type
= BLOBMSG_TYPE_BOOL
},
182 [ODHCPD_ATTR_MAINDHCP
] = { .name
= "maindhcp", .type
= BLOBMSG_TYPE_BOOL
},
183 [ODHCPD_ATTR_LEASEFILE
] = { .name
= "leasefile", .type
= BLOBMSG_TYPE_STRING
},
184 [ODHCPD_ATTR_LEASETRIGGER
] = { .name
= "leasetrigger", .type
= BLOBMSG_TYPE_STRING
},
185 [ODHCPD_ATTR_LOGLEVEL
] = { .name
= "loglevel", .type
= BLOBMSG_TYPE_INT32
},
188 const struct uci_blob_param_list odhcpd_attr_list
= {
189 .n_params
= ODHCPD_ATTR_MAX
,
190 .params
= odhcpd_attrs
,
193 static const struct { const char *name
; uint8_t flag
; } ra_flags
[] = {
194 { .name
= "managed-config", .flag
= ND_RA_FLAG_MANAGED
},
195 { .name
= "other-config", .flag
= ND_RA_FLAG_OTHER
},
196 { .name
= "home-agent", .flag
= ND_RA_FLAG_HOME_AGENT
},
197 { .name
= "none", . flag
= 0 },
201 static int mkdir_p(char *dir
, mode_t mask
)
203 char *l
= strrchr(dir
, '/');
211 if (mkdir_p(dir
, mask
))
216 ret
= mkdir(dir
, mask
);
217 if (ret
&& errno
== EEXIST
)
221 syslog(LOG_ERR
, "mkdir(%s, %d) failed: %m\n", dir
, mask
);
226 static void set_interface_defaults(struct interface
*iface
)
228 iface
->ignore
= true;
229 iface
->dhcpv4
= MODE_DISABLED
;
230 iface
->dhcpv6
= MODE_DISABLED
;
231 iface
->ra
= MODE_DISABLED
;
232 iface
->ndp
= MODE_DISABLED
;
233 iface
->learn_routes
= 1;
234 iface
->dhcp_leasetime
= 43200;
235 iface
->dhcpv4_start
.s_addr
= htonl(START_DEFAULT
);
236 iface
->dhcpv4_end
.s_addr
= htonl(START_DEFAULT
+ LIMIT_DEFAULT
- 1);
237 iface
->dhcpv6_assignall
= true;
238 iface
->dhcpv6_pd
= true;
239 iface
->dhcpv6_na
= true;
240 iface
->dns_service
= true;
241 iface
->ra_flags
= ND_RA_FLAG_OTHER
;
242 iface
->ra_slaac
= true;
243 iface
->ra_maxinterval
= 600;
244 iface
->ra_mininterval
= iface
->ra_maxinterval
/3;
245 iface
->ra_lifetime
= -1;
246 iface
->ra_dns
= true;
249 static void clean_interface(struct interface
*iface
)
253 free(iface
->upstream
);
254 free(iface
->dhcpv4_router
);
255 free(iface
->dhcpv4_dns
);
256 free(iface
->dhcpv6_raw
);
257 free(iface
->filter_class
);
258 memset(&iface
->ra
, 0, sizeof(*iface
) - offsetof(struct interface
, ra
));
259 set_interface_defaults(iface
);
262 static void close_interface(struct interface
*iface
)
264 avl_delete(&interfaces
, &iface
->avl
);
266 router_setup_interface(iface
, false);
267 dhcpv6_setup_interface(iface
, false);
268 ndp_setup_interface(iface
, false);
269 #ifdef DHCPV4_SUPPORT
270 dhcpv4_setup_interface(iface
, false);
273 clean_interface(iface
);
280 static int parse_mode(const char *mode
)
282 if (!strcmp(mode
, "disabled"))
283 return MODE_DISABLED
;
284 else if (!strcmp(mode
, "server"))
286 else if (!strcmp(mode
, "relay"))
288 else if (!strcmp(mode
, "hybrid"))
294 static int parse_ra_flags(uint8_t *flags
, struct blob_attr
*attr
)
296 struct blob_attr
*cur
;
299 blobmsg_for_each_attr(cur
, attr
, rem
) {
302 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
305 if (!blobmsg_check_attr(cur
, false))
308 for (i
= 0; ra_flags
[i
].name
; i
++) {
309 if (!strcmp(ra_flags
[i
].name
, blobmsg_get_string(cur
))) {
310 *flags
|= ra_flags
[i
].flag
;
315 if (!ra_flags
[i
].name
)
322 static void set_config(struct uci_section
*s
)
324 struct blob_attr
*tb
[ODHCPD_ATTR_MAX
], *c
;
326 blob_buf_init(&b
, 0);
327 uci_to_blob(&b
, s
, &odhcpd_attr_list
);
328 blobmsg_parse(odhcpd_attrs
, ODHCPD_ATTR_MAX
, tb
, blob_data(b
.head
), blob_len(b
.head
));
330 if ((c
= tb
[ODHCPD_ATTR_LEGACY
]))
331 config
.legacy
= blobmsg_get_bool(c
);
333 if ((c
= tb
[ODHCPD_ATTR_MAINDHCP
]))
334 config
.main_dhcpv4
= blobmsg_get_bool(c
);
336 if ((c
= tb
[ODHCPD_ATTR_LEASEFILE
])) {
337 free(config
.dhcp_statefile
);
338 config
.dhcp_statefile
= strdup(blobmsg_get_string(c
));
341 if ((c
= tb
[ODHCPD_ATTR_LEASETRIGGER
])) {
342 free(config
.dhcp_cb
);
343 config
.dhcp_cb
= strdup(blobmsg_get_string(c
));
346 if ((c
= tb
[ODHCPD_ATTR_LOGLEVEL
])) {
347 int log_level
= (blobmsg_get_u32(c
) & LOG_PRIMASK
);
349 if (config
.log_level
!= log_level
) {
350 config
.log_level
= log_level
;
351 setlogmask(LOG_UPTO(config
.log_level
));
356 static double parse_leasetime(struct blob_attr
*c
) {
357 char *val
= blobmsg_get_string(c
), *endptr
= NULL
;
358 double time
= strcmp(val
, "infinite") ? strtod(val
, &endptr
) : UINT32_MAX
;
360 if (time
&& endptr
&& endptr
[0]) {
361 if (endptr
[0] == 's')
363 else if (endptr
[0] == 'm')
365 else if (endptr
[0] == 'h')
367 else if (endptr
[0] == 'd')
369 else if (endptr
[0] == 'w')
370 time
*= 7 * 24 * 3600;
384 static void free_lease(struct lease
*l
)
390 static int set_lease(struct uci_section
*s
)
392 struct blob_attr
*tb
[LEASE_ATTR_MAX
], *c
;
397 blob_buf_init(&b
, 0);
398 uci_to_blob(&b
, s
, &lease_attr_list
);
399 blobmsg_parse(lease_attrs
, LEASE_ATTR_MAX
, tb
, blob_data(b
.head
), blob_len(b
.head
));
401 if ((c
= tb
[LEASE_ATTR_DUID
]))
402 duidlen
= (blobmsg_data_len(c
) - 1) / 2;
404 l
= calloc_a(sizeof(*l
), &duid
, duidlen
);
408 if ((c
= tb
[LEASE_ATTR_MAC
]))
409 if (!ether_aton_r(blobmsg_get_string(c
), &l
->mac
))
412 if ((c
= tb
[LEASE_ATTR_DUID
])) {
416 len
= odhcpd_unhexlify(l
->duid
, duidlen
, blobmsg_get_string(c
));
424 if ((c
= tb
[LEASE_ATTR_NAME
])) {
425 l
->hostname
= strdup(blobmsg_get_string(c
));
426 if (!l
->hostname
|| !odhcpd_valid_hostname(l
->hostname
))
430 if ((c
= tb
[LEASE_ATTR_IP
]))
431 if (inet_pton(AF_INET
, blobmsg_get_string(c
), &l
->ipaddr
) < 0)
434 if ((c
= tb
[LEASE_ATTR_HOSTID
])) {
436 l
->hostid
= strtoul(blobmsg_get_string(c
), NULL
, 16);
440 uint32_t i4a
= ntohl(l
->ipaddr
) & 0xff;
441 l
->hostid
= ((i4a
/ 100) << 8) | (((i4a
% 100) / 10) << 4) | (i4a
% 10);
444 if ((c
= tb
[LEASE_ATTR_LEASETIME
])) {
445 double time
= parse_leasetime(c
);
452 INIT_LIST_HEAD(&l
->assignments
);
453 vlist_add(&leases
, &l
->node
, l
);
463 int config_parse_interface(void *data
, size_t len
, const char *name
, bool overwrite
)
465 struct interface
*iface
;
466 struct blob_attr
*tb
[IFACE_ATTR_MAX
], *c
;
467 bool get_addrs
= false;
469 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
, data
, len
);
471 if (tb
[IFACE_ATTR_INTERFACE
])
472 name
= blobmsg_get_string(tb
[IFACE_ATTR_INTERFACE
]);
477 iface
= avl_find_element(&interfaces
, name
, iface
, avl
);
481 iface
= calloc_a(sizeof(*iface
), &new_name
, strlen(name
) + 1);
485 iface
->name
= strcpy(new_name
, name
);
486 iface
->avl
.key
= iface
->name
;
487 iface
->router_event
.uloop
.fd
= -1;
488 iface
->dhcpv6_event
.uloop
.fd
= -1;
489 iface
->ndp_event
.uloop
.fd
= -1;
490 iface
->ndp_ping_fd
= -1;
491 iface
->dhcpv4_event
.uloop
.fd
= -1;
492 INIT_LIST_HEAD(&iface
->ia_assignments
);
493 INIT_LIST_HEAD(&iface
->dhcpv4_assignments
);
494 INIT_LIST_HEAD(&iface
->dhcpv4_fr_ips
);
496 set_interface_defaults(iface
);
498 avl_insert(&interfaces
, &iface
->avl
);
499 get_addrs
= overwrite
= true;
502 const char *ifname
= NULL
;
504 if ((c
= tb
[IFACE_ATTR_IFNAME
]))
505 ifname
= blobmsg_get_string(c
);
506 else if ((c
= tb
[IFACE_ATTR_NETWORKID
]))
507 ifname
= blobmsg_get_string(c
);
511 if (overwrite
|| !iface
->ifname
)
512 ifname
= ubus_get_ifname(name
);
515 if (!iface
->ifname
&& !ifname
)
520 iface
->ifname
= strdup(ifname
);
525 if (!iface
->ifindex
&&
526 (iface
->ifindex
= if_nametoindex(iface
->ifname
)) <= 0)
531 ssize_t len
= netlink_get_interface_addrs(iface
->ifindex
,
532 true, &iface
->addr6
);
535 iface
->addr6_len
= len
;
537 len
= netlink_get_interface_addrs(iface
->ifindex
,
538 false, &iface
->addr4
);
540 iface
->addr4_len
= len
;
545 if ((c
= tb
[IFACE_ATTR_DYNAMICDHCP
]))
546 iface
->no_dynamic_dhcp
= !blobmsg_get_bool(c
);
548 if ((c
= tb
[IFACE_ATTR_LEASETIME
])) {
549 double time
= parse_leasetime(c
);
553 iface
->dhcp_leasetime
= time
;
556 if ((c
= tb
[IFACE_ATTR_START
])) {
557 iface
->dhcpv4_start
.s_addr
= htonl(blobmsg_get_u32(c
));
558 iface
->dhcpv4_end
.s_addr
= htonl(ntohl(iface
->dhcpv4_start
.s_addr
) +
561 if (config
.main_dhcpv4
&& config
.legacy
)
562 iface
->dhcpv4
= MODE_SERVER
;
565 if ((c
= tb
[IFACE_ATTR_LIMIT
]))
566 iface
->dhcpv4_end
.s_addr
= htonl(ntohl(iface
->dhcpv4_start
.s_addr
) +
567 blobmsg_get_u32(c
) - 1);
569 if ((c
= tb
[IFACE_ATTR_MASTER
]))
570 iface
->master
= blobmsg_get_bool(c
);
572 if (overwrite
&& (c
= tb
[IFACE_ATTR_UPSTREAM
])) {
573 struct blob_attr
*cur
;
576 blobmsg_for_each_attr(cur
, c
, rem
) {
577 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, false))
580 iface
->upstream
= realloc(iface
->upstream
,
581 iface
->upstream_len
+ blobmsg_data_len(cur
));
582 if (!iface
->upstream
)
585 memcpy(iface
->upstream
+ iface
->upstream_len
, blobmsg_get_string(cur
), blobmsg_data_len(cur
));
586 iface
->upstream_len
+= blobmsg_data_len(cur
);
591 if ((c
= tb
[IFACE_ATTR_RA
])) {
592 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0) {
595 if (iface
->ra
!= MODE_DISABLED
)
596 iface
->ignore
= false;
601 if ((c
= tb
[IFACE_ATTR_DHCPV4
])) {
602 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0) {
603 if (config
.main_dhcpv4
) {
604 iface
->dhcpv4
= mode
;
606 if (iface
->dhcpv4
!= MODE_DISABLED
)
607 iface
->ignore
= false;
614 if ((c
= tb
[IFACE_ATTR_DHCPV6
])) {
615 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0) {
616 iface
->dhcpv6
= mode
;
618 if (iface
->dhcpv6
!= MODE_DISABLED
)
619 iface
->ignore
= false;
624 if ((c
= tb
[IFACE_ATTR_NDP
])) {
625 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0) {
628 if (iface
->ndp
!= MODE_DISABLED
)
629 iface
->ignore
= false;
634 if ((c
= tb
[IFACE_ATTR_ROUTER
])) {
635 struct blob_attr
*cur
;
638 blobmsg_for_each_attr(cur
, c
, rem
) {
639 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, false))
642 struct in_addr addr4
;
643 if (inet_pton(AF_INET
, blobmsg_get_string(cur
), &addr4
) == 1) {
644 iface
->dhcpv4_router
= realloc(iface
->dhcpv4_router
,
645 (++iface
->dhcpv4_router_cnt
) * sizeof(*iface
->dhcpv4_router
));
646 if (!iface
->dhcpv4_router
)
649 iface
->dhcpv4_router
[iface
->dhcpv4_router_cnt
- 1] = addr4
;
655 if ((c
= tb
[IFACE_ATTR_DNS
])) {
656 struct blob_attr
*cur
;
659 iface
->always_rewrite_dns
= true;
660 blobmsg_for_each_attr(cur
, c
, rem
) {
661 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, false))
664 struct in_addr addr4
;
665 struct in6_addr addr6
;
666 if (inet_pton(AF_INET
, blobmsg_get_string(cur
), &addr4
) == 1) {
667 if (addr4
.s_addr
== INADDR_ANY
)
670 iface
->dhcpv4_dns
= realloc(iface
->dhcpv4_dns
,
671 (++iface
->dhcpv4_dns_cnt
) * sizeof(*iface
->dhcpv4_dns
));
672 if (!iface
->dhcpv4_dns
)
675 iface
->dhcpv4_dns
[iface
->dhcpv4_dns_cnt
- 1] = addr4
;
676 } else if (inet_pton(AF_INET6
, blobmsg_get_string(cur
), &addr6
) == 1) {
677 if (IN6_IS_ADDR_UNSPECIFIED(&addr6
))
680 iface
->dns
= realloc(iface
->dns
,
681 (++iface
->dns_cnt
) * sizeof(*iface
->dns
));
685 iface
->dns
[iface
->dns_cnt
- 1] = addr6
;
691 if ((c
= tb
[IFACE_ATTR_DNS_SERVICE
]))
692 iface
->dns_service
= blobmsg_get_bool(c
);
694 if ((c
= tb
[IFACE_ATTR_DOMAIN
])) {
695 struct blob_attr
*cur
;
698 blobmsg_for_each_attr(cur
, c
, rem
) {
699 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, false))
703 char *domain
= blobmsg_get_string(cur
);
704 size_t domainlen
= strlen(domain
);
705 if (domainlen
> 0 && domain
[domainlen
- 1] == '.')
706 domain
[domainlen
- 1] = 0;
708 int len
= dn_comp(domain
, buf
, sizeof(buf
), NULL
, NULL
);
712 iface
->search
= realloc(iface
->search
, iface
->search_len
+ len
);
716 memcpy(&iface
->search
[iface
->search_len
], buf
, len
);
717 iface
->search_len
+= len
;
721 if ((c
= tb
[IFACE_ATTR_FILTER_CLASS
])) {
722 iface
->filter_class
= realloc(iface
->filter_class
, blobmsg_data_len(c
) + 1);
723 memcpy(iface
->filter_class
, blobmsg_get_string(c
), blobmsg_data_len(c
) + 1);
726 if ((c
= tb
[IFACE_ATTR_DHCPV4_FORCERECONF
]))
727 iface
->dhcpv4_forcereconf
= blobmsg_get_bool(c
);
729 if ((c
= tb
[IFACE_ATTR_DHCPV6_RAW
])) {
730 iface
->dhcpv6_raw_len
= blobmsg_data_len(c
) / 2;
731 iface
->dhcpv6_raw
= realloc(iface
->dhcpv6_raw
, iface
->dhcpv6_raw_len
);
732 odhcpd_unhexlify(iface
->dhcpv6_raw
, iface
->dhcpv6_raw_len
, blobmsg_get_string(c
));
735 if ((c
= tb
[IFACE_ATTR_DHCPV6_ASSIGNALL
]))
736 iface
->dhcpv6_assignall
= blobmsg_get_bool(c
);
738 if ((c
= tb
[IFACE_ATTR_DHCPV6_PD
]))
739 iface
->dhcpv6_pd
= blobmsg_get_bool(c
);
741 if ((c
= tb
[IFACE_ATTR_DHCPV6_NA
]))
742 iface
->dhcpv6_na
= blobmsg_get_bool(c
);
744 if ((c
= tb
[IFACE_ATTR_RA_DEFAULT
]))
745 iface
->default_router
= blobmsg_get_u32(c
);
747 if (!tb
[IFACE_ATTR_RA_FLAGS
] && !tb
[IFACE_ATTR_RA_SLAAC
] &&
748 (c
= tb
[IFACE_ATTR_RA_MANAGEMENT
])) {
749 switch (blobmsg_get_u32(c
)) {
751 iface
->ra_flags
= ND_RA_FLAG_OTHER
;
752 iface
->ra_slaac
= true;
755 iface
->ra_flags
= ND_RA_FLAG_OTHER
|ND_RA_FLAG_MANAGED
;
756 iface
->ra_slaac
= true;
759 iface
->ra_flags
= ND_RA_FLAG_OTHER
|ND_RA_FLAG_MANAGED
;
760 iface
->ra_slaac
= false;
767 if ((c
= tb
[IFACE_ATTR_RA_FLAGS
])) {
769 if (parse_ra_flags(&iface
->ra_flags
, c
) < 0)
773 if ((c
= tb
[IFACE_ATTR_RA_REACHABLETIME
])) {
774 uint32_t ra_reachabletime
= blobmsg_get_u32(c
);
775 if (ra_reachabletime
> 3600000)
778 iface
->ra_reachabletime
= ra_reachabletime
;
781 if ((c
= tb
[IFACE_ATTR_RA_RETRANSTIME
])) {
782 uint32_t ra_retranstime
= blobmsg_get_u32(c
);
783 if (ra_retranstime
> 60000)
786 iface
->ra_retranstime
= ra_retranstime
;
789 if ((c
= tb
[IFACE_ATTR_RA_HOPLIMIT
])) {
790 uint32_t ra_hoplimit
= blobmsg_get_u32(c
);
791 if (ra_hoplimit
> 255)
794 iface
->ra_hoplimit
= ra_hoplimit
;
797 if ((c
= tb
[IFACE_ATTR_RA_MTU
])) {
798 uint32_t ra_mtu
= blobmsg_get_u32(c
);
799 if (ra_mtu
< 1280 || ra_mtu
> 65535)
802 iface
->ra_mtu
= ra_mtu
;
805 if ((c
= tb
[IFACE_ATTR_RA_SLAAC
]))
806 iface
->ra_slaac
= blobmsg_get_bool(c
);
808 if ((c
= tb
[IFACE_ATTR_RA_OFFLINK
]))
809 iface
->ra_not_onlink
= blobmsg_get_bool(c
);
811 if ((c
= tb
[IFACE_ATTR_RA_ADVROUTER
]))
812 iface
->ra_advrouter
= blobmsg_get_bool(c
);
814 if ((c
= tb
[IFACE_ATTR_RA_MININTERVAL
]))
815 iface
->ra_mininterval
= blobmsg_get_u32(c
);
817 if ((c
= tb
[IFACE_ATTR_RA_MAXINTERVAL
]))
818 iface
->ra_maxinterval
= blobmsg_get_u32(c
);
820 if ((c
= tb
[IFACE_ATTR_RA_LIFETIME
]))
821 iface
->ra_lifetime
= blobmsg_get_u32(c
);
823 if ((c
= tb
[IFACE_ATTR_RA_USELEASETIME
]))
824 iface
->ra_useleasetime
= blobmsg_get_bool(c
);
826 if ((c
= tb
[IFACE_ATTR_RA_DNS
]))
827 iface
->ra_dns
= blobmsg_get_bool(c
);
829 if ((c
= tb
[IFACE_ATTR_RA_PREFERENCE
])) {
830 const char *prio
= blobmsg_get_string(c
);
832 if (!strcmp(prio
, "high"))
833 iface
->route_preference
= 1;
834 else if (!strcmp(prio
, "low"))
835 iface
->route_preference
= -1;
836 else if (!strcmp(prio
, "medium") || !strcmp(prio
, "default"))
837 iface
->route_preference
= 0;
842 if ((c
= tb
[IFACE_ATTR_PD_MANAGER
]))
843 strncpy(iface
->dhcpv6_pd_manager
, blobmsg_get_string(c
),
844 sizeof(iface
->dhcpv6_pd_manager
) - 1);
846 if ((c
= tb
[IFACE_ATTR_PD_CER
]) &&
847 inet_pton(AF_INET6
, blobmsg_get_string(c
), &iface
->dhcpv6_pd_cer
) < 1)
850 if ((c
= tb
[IFACE_ATTR_NDPROXY_ROUTING
]))
851 iface
->learn_routes
= blobmsg_get_bool(c
);
853 if ((c
= tb
[IFACE_ATTR_NDPROXY_SLAVE
]))
854 iface
->external
= blobmsg_get_bool(c
);
856 if ((c
= tb
[IFACE_ATTR_PREFIX_FILTER
])) {
857 const char *str
= blobmsg_get_string(c
);
858 char *astr
= malloc(strlen(str
) + 1);
862 if (!astr
|| !strcpy(astr
, str
) ||
863 (delim
= strchr(astr
, '/')) == NULL
|| (*(delim
++) = 0) ||
864 sscanf(delim
, "%i", &l
) == 0 || l
> 128 ||
865 inet_pton(AF_INET6
, astr
, &iface
->pio_filter_addr
) == 0)
866 iface
->pio_filter_length
= 0;
868 iface
->pio_filter_length
= l
;
877 close_interface(iface
);
881 static int set_interface(struct uci_section
*s
)
883 blob_buf_init(&b
, 0);
884 uci_to_blob(&b
, s
, &interface_attr_list
);
886 return config_parse_interface(blob_data(b
.head
), blob_len(b
.head
), s
->e
.name
, true);
889 static void lease_delete_assignments(struct lease
*l
, bool v6
)
891 struct dhcp_assignment
*a
, *tmp
;
892 unsigned int flag
= v6
? OAF_DHCPV6
: OAF_DHCPV4
;
894 list_for_each_entry_safe(a
, tmp
, &l
->assignments
, lease_list
) {
900 static void lease_update_assignments(struct lease
*l
)
902 struct dhcp_assignment
*a
;
904 list_for_each_entry(a
, &l
->assignments
, lease_list
) {
910 a
->hostname
= strdup(l
->hostname
);
912 a
->leasetime
= l
->leasetime
;
916 static int lease_cmp(const void *k1
, const void *k2
, _unused
void *ptr
)
918 const struct lease
*l1
= k1
, *l2
= k2
;
921 if (l1
->duid_len
!= l2
->duid_len
)
922 return l1
->duid_len
- l2
->duid_len
;
924 if (l1
->duid_len
&& l2
->duid_len
)
925 cmp
= memcmp(l1
->duid
, l2
->duid
, l1
->duid_len
);
930 return memcmp(l1
->mac
.ether_addr_octet
, l2
->mac
.ether_addr_octet
,
931 sizeof(l1
->mac
.ether_addr_octet
));
934 static void lease_change_config(struct lease
*l_old
, struct lease
*l_new
)
938 if ((!!l_new
->hostname
!= !!l_old
->hostname
) ||
939 (l_new
->hostname
&& strcmp(l_new
->hostname
, l_old
->hostname
))) {
940 free(l_old
->hostname
);
941 l_old
->hostname
= NULL
;
944 l_old
->hostname
= strdup(l_new
->hostname
);
949 if (l_old
->leasetime
!= l_new
->leasetime
) {
950 l_old
->leasetime
= l_new
->leasetime
;
954 if (l_old
->ipaddr
!= l_new
->ipaddr
) {
955 l_old
->ipaddr
= l_new
->ipaddr
;
956 lease_delete_assignments(l_old
, false);
959 if (l_old
->hostid
!= l_new
->hostid
) {
960 l_old
->hostid
= l_new
->hostid
;
961 lease_delete_assignments(l_old
, true);
965 lease_update_assignments(l_old
);
970 static void lease_delete(struct lease
*l
)
972 struct dhcp_assignment
*a
, *tmp
;
974 list_for_each_entry_safe(a
, tmp
, &l
->assignments
, lease_list
)
980 static void lease_update(_unused
struct vlist_tree
*tree
, struct vlist_node
*node_new
,
981 struct vlist_node
*node_old
)
983 struct lease
*lease_new
= container_of(node_new
, struct lease
, node
);
984 struct lease
*lease_old
= container_of(node_old
, struct lease
, node
);
986 if (node_old
&& node_new
)
987 lease_change_config(lease_old
, lease_new
);
989 lease_delete(lease_old
);
992 struct lease
*config_find_lease_by_duid(const uint8_t *duid
, const uint16_t len
)
996 vlist_for_each_element(&leases
, l
, node
) {
997 if (l
->duid_len
== len
&& !memcmp(l
->duid
, duid
, len
))
1004 struct lease
*config_find_lease_by_mac(const uint8_t *mac
)
1008 vlist_for_each_element(&leases
, l
, node
) {
1009 if (!memcmp(l
->mac
.ether_addr_octet
, mac
,
1010 sizeof(l
->mac
.ether_addr_octet
)))
1017 struct lease
*config_find_lease_by_hostid(const uint32_t hostid
)
1021 vlist_for_each_element(&leases
, l
, node
) {
1022 if (l
->hostid
== hostid
)
1029 struct lease
*config_find_lease_by_ipaddr(const uint32_t ipaddr
)
1033 vlist_for_each_element(&leases
, l
, node
) {
1034 if (l
->ipaddr
== ipaddr
)
1041 void odhcpd_reload(void)
1043 struct uci_context
*uci
= uci_alloc_context();
1044 struct interface
*master
= NULL
, *i
, *tmp
;
1049 vlist_update(&leases
);
1050 avl_for_each_element(&interfaces
, i
, avl
)
1053 struct uci_package
*dhcp
= NULL
;
1054 if (!uci_load(uci
, "dhcp", &dhcp
)) {
1055 struct uci_element
*e
;
1057 /* 1. Global settings */
1058 uci_foreach_element(&dhcp
->sections
, e
) {
1059 struct uci_section
*s
= uci_to_section(e
);
1060 if (!strcmp(s
->type
, "odhcpd"))
1065 uci_foreach_element(&dhcp
->sections
, e
) {
1066 struct uci_section
*s
= uci_to_section(e
);
1067 if (!strcmp(s
->type
, "dhcp"))
1071 /* 3. Static leases */
1072 uci_foreach_element(&dhcp
->sections
, e
) {
1073 struct uci_section
* s
= uci_to_section(e
);
1074 if (!strcmp(s
->type
, "host"))
1079 if (config
.dhcp_statefile
) {
1080 char *path
= strdup(config
.dhcp_statefile
);
1082 mkdir_p(dirname(path
), 0755);
1086 vlist_flush(&leases
);
1089 ubus_apply_network();
1092 bool any_dhcpv6_slave
= false, any_ra_slave
= false, any_ndp_slave
= false;
1095 avl_for_each_element(&interfaces
, i
, avl
) {
1099 if (i
->dhcpv6
== MODE_HYBRID
|| i
->dhcpv6
== MODE_RELAY
)
1100 any_dhcpv6_slave
= true;
1102 if (i
->ra
== MODE_HYBRID
|| i
->ra
== MODE_RELAY
)
1103 any_ra_slave
= true;
1105 if (i
->ndp
== MODE_HYBRID
|| i
->ndp
== MODE_RELAY
)
1106 any_ndp_slave
= true;
1109 /* Evaluate hybrid mode for master */
1110 avl_for_each_element(&interfaces
, i
, avl
) {
1114 enum odhcpd_mode hybrid_mode
= MODE_DISABLED
;
1116 if (!ubus_has_prefix(i
->name
, i
->ifname
))
1117 hybrid_mode
= MODE_RELAY
;
1120 if (i
->dhcpv6
== MODE_HYBRID
)
1121 i
->dhcpv6
= hybrid_mode
;
1123 if (i
->dhcpv6
== MODE_RELAY
&& !any_dhcpv6_slave
)
1124 i
->dhcpv6
= MODE_DISABLED
;
1126 if (i
->ra
== MODE_HYBRID
)
1127 i
->ra
= hybrid_mode
;
1129 if (i
->ra
== MODE_RELAY
&& !any_ra_slave
)
1130 i
->ra
= MODE_DISABLED
;
1132 if (i
->ndp
== MODE_HYBRID
)
1133 i
->ndp
= hybrid_mode
;
1135 if (i
->ndp
== MODE_RELAY
&& !any_ndp_slave
)
1136 i
->ndp
= MODE_DISABLED
;
1138 if (i
->dhcpv6
== MODE_RELAY
|| i
->ra
== MODE_RELAY
|| i
->ndp
== MODE_RELAY
)
1143 avl_for_each_element_safe(&interfaces
, i
, avl
, tmp
) {
1145 /* Resolve hybrid mode */
1146 if (i
->dhcpv6
== MODE_HYBRID
)
1147 i
->dhcpv6
= (master
&& master
->dhcpv6
== MODE_RELAY
) ?
1148 MODE_RELAY
: MODE_SERVER
;
1150 if (i
->ra
== MODE_HYBRID
)
1151 i
->ra
= (master
&& master
->ra
== MODE_RELAY
) ?
1152 MODE_RELAY
: MODE_SERVER
;
1154 if (i
->ndp
== MODE_HYBRID
)
1155 i
->ndp
= (master
&& master
->ndp
== MODE_RELAY
) ?
1156 MODE_RELAY
: MODE_DISABLED
;
1158 router_setup_interface(i
, i
->ra
!= MODE_DISABLED
);
1159 dhcpv6_setup_interface(i
, i
->dhcpv6
!= MODE_DISABLED
);
1160 ndp_setup_interface(i
, i
->ndp
!= MODE_DISABLED
);
1161 #ifdef DHCPV4_SUPPORT
1162 dhcpv4_setup_interface(i
, i
->dhcpv4
!= MODE_DISABLED
);
1168 uci_unload(uci
, dhcp
);
1169 uci_free_context(uci
);
1172 static void handle_signal(int signal
)
1176 if (signal
== SIGHUP
) {
1177 if (write(reload_pipe
[1], b
, sizeof(b
)) < 0) {}
1182 static void reload_cb(struct uloop_fd
*u
, _unused
unsigned int events
)
1185 if (read(u
->fd
, b
, sizeof(b
)) < 0) {}
1190 static struct uloop_fd reload_fd
= { .fd
= -1, .cb
= reload_cb
};
1192 void odhcpd_run(void)
1194 if (pipe2(reload_pipe
, O_NONBLOCK
| O_CLOEXEC
) < 0) {}
1196 reload_fd
.fd
= reload_pipe
[0];
1197 uloop_fd_add(&reload_fd
, ULOOP_READ
);
1199 signal(SIGTERM
, handle_signal
);
1200 signal(SIGINT
, handle_signal
);
1201 signal(SIGHUP
, handle_signal
);