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
,
57 IFACE_ATTR_FILTER_CLASS
,
58 IFACE_ATTR_DHCPV4_FORCERECONF
,
59 IFACE_ATTR_DHCPV6_RAW
,
60 IFACE_ATTR_DHCPV6_ASSIGNALL
,
63 IFACE_ATTR_RA_DEFAULT
,
64 IFACE_ATTR_RA_MANAGEMENT
,
67 IFACE_ATTR_RA_OFFLINK
,
68 IFACE_ATTR_RA_PREFERENCE
,
69 IFACE_ATTR_RA_ADVROUTER
,
70 IFACE_ATTR_RA_MININTERVAL
,
71 IFACE_ATTR_RA_MAXINTERVAL
,
72 IFACE_ATTR_RA_LIFETIME
,
73 IFACE_ATTR_RA_USELEASETIME
,
74 IFACE_ATTR_RA_REACHABLETIME
,
75 IFACE_ATTR_RA_RETRANSTIME
,
76 IFACE_ATTR_RA_HOPLIMIT
,
79 IFACE_ATTR_PD_MANAGER
,
81 IFACE_ATTR_NDPROXY_ROUTING
,
82 IFACE_ATTR_NDPROXY_SLAVE
,
83 IFACE_ATTR_PREFIX_FILTER
,
87 static const struct blobmsg_policy iface_attrs
[IFACE_ATTR_MAX
] = {
88 [IFACE_ATTR_INTERFACE
] = { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
89 [IFACE_ATTR_IFNAME
] = { .name
= "ifname", .type
= BLOBMSG_TYPE_STRING
},
90 [IFACE_ATTR_NETWORKID
] = { .name
= "networkid", .type
= BLOBMSG_TYPE_STRING
},
91 [IFACE_ATTR_DYNAMICDHCP
] = { .name
= "dynamicdhcp", .type
= BLOBMSG_TYPE_BOOL
},
92 [IFACE_ATTR_LEASETIME
] = { .name
= "leasetime", .type
= BLOBMSG_TYPE_STRING
},
93 [IFACE_ATTR_START
] = { .name
= "start", .type
= BLOBMSG_TYPE_INT32
},
94 [IFACE_ATTR_LIMIT
] = { .name
= "limit", .type
= BLOBMSG_TYPE_INT32
},
95 [IFACE_ATTR_MASTER
] = { .name
= "master", .type
= BLOBMSG_TYPE_BOOL
},
96 [IFACE_ATTR_UPSTREAM
] = { .name
= "upstream", .type
= BLOBMSG_TYPE_ARRAY
},
97 [IFACE_ATTR_RA
] = { .name
= "ra", .type
= BLOBMSG_TYPE_STRING
},
98 [IFACE_ATTR_DHCPV4
] = { .name
= "dhcpv4", .type
= BLOBMSG_TYPE_STRING
},
99 [IFACE_ATTR_DHCPV6
] = { .name
= "dhcpv6", .type
= BLOBMSG_TYPE_STRING
},
100 [IFACE_ATTR_NDP
] = { .name
= "ndp", .type
= BLOBMSG_TYPE_STRING
},
101 [IFACE_ATTR_ROUTER
] = { .name
= "router", .type
= BLOBMSG_TYPE_ARRAY
},
102 [IFACE_ATTR_DNS
] = { .name
= "dns", .type
= BLOBMSG_TYPE_ARRAY
},
103 [IFACE_ATTR_DOMAIN
] = { .name
= "domain", .type
= BLOBMSG_TYPE_ARRAY
},
104 [IFACE_ATTR_FILTER_CLASS
] = { .name
= "filter_class", .type
= BLOBMSG_TYPE_STRING
},
105 [IFACE_ATTR_DHCPV4_FORCERECONF
] = { .name
= "dhcpv4_forcereconf", .type
= BLOBMSG_TYPE_BOOL
},
106 [IFACE_ATTR_DHCPV6_RAW
] = { .name
= "dhcpv6_raw", .type
= BLOBMSG_TYPE_STRING
},
107 [IFACE_ATTR_DHCPV6_ASSIGNALL
] = { .name
="dhcpv6_assignall", .type
= BLOBMSG_TYPE_BOOL
},
108 [IFACE_ATTR_DHCPV6_PD
] = { .name
= "dhcpv6_pd", .type
= BLOBMSG_TYPE_BOOL
},
109 [IFACE_ATTR_DHCPV6_NA
] = { .name
= "dhcpv6_na", .type
= BLOBMSG_TYPE_BOOL
},
110 [IFACE_ATTR_PD_MANAGER
] = { .name
= "pd_manager", .type
= BLOBMSG_TYPE_STRING
},
111 [IFACE_ATTR_PD_CER
] = { .name
= "pd_cer", .type
= BLOBMSG_TYPE_STRING
},
112 [IFACE_ATTR_RA_DEFAULT
] = { .name
= "ra_default", .type
= BLOBMSG_TYPE_INT32
},
113 [IFACE_ATTR_RA_MANAGEMENT
] = { .name
= "ra_management", .type
= BLOBMSG_TYPE_INT32
},
114 [IFACE_ATTR_RA_FLAGS
] = { .name
= "ra_flags", . type
= BLOBMSG_TYPE_ARRAY
},
115 [IFACE_ATTR_RA_SLAAC
] = { .name
= "ra_slaac", .type
= BLOBMSG_TYPE_BOOL
},
116 [IFACE_ATTR_RA_OFFLINK
] = { .name
= "ra_offlink", .type
= BLOBMSG_TYPE_BOOL
},
117 [IFACE_ATTR_RA_PREFERENCE
] = { .name
= "ra_preference", .type
= BLOBMSG_TYPE_STRING
},
118 [IFACE_ATTR_RA_ADVROUTER
] = { .name
= "ra_advrouter", .type
= BLOBMSG_TYPE_BOOL
},
119 [IFACE_ATTR_RA_MININTERVAL
] = { .name
= "ra_mininterval", .type
= BLOBMSG_TYPE_INT32
},
120 [IFACE_ATTR_RA_MAXINTERVAL
] = { .name
= "ra_maxinterval", .type
= BLOBMSG_TYPE_INT32
},
121 [IFACE_ATTR_RA_LIFETIME
] = { .name
= "ra_lifetime", .type
= BLOBMSG_TYPE_INT32
},
122 [IFACE_ATTR_RA_USELEASETIME
] = { .name
= "ra_useleasetime", .type
= BLOBMSG_TYPE_BOOL
},
123 [IFACE_ATTR_RA_REACHABLETIME
] = { .name
= "ra_reachabletime", .type
= BLOBMSG_TYPE_INT32
},
124 [IFACE_ATTR_RA_RETRANSTIME
] = { .name
= "ra_retranstime", .type
= BLOBMSG_TYPE_INT32
},
125 [IFACE_ATTR_RA_HOPLIMIT
] = { .name
= "ra_hoplimit", .type
= BLOBMSG_TYPE_INT32
},
126 [IFACE_ATTR_RA_MTU
] = { .name
= "ra_mtu", .type
= BLOBMSG_TYPE_INT32
},
127 [IFACE_ATTR_RA_DNS
] = { .name
= "ra_dns", .type
= BLOBMSG_TYPE_BOOL
},
128 [IFACE_ATTR_NDPROXY_ROUTING
] = { .name
= "ndproxy_routing", .type
= BLOBMSG_TYPE_BOOL
},
129 [IFACE_ATTR_NDPROXY_SLAVE
] = { .name
= "ndproxy_slave", .type
= BLOBMSG_TYPE_BOOL
},
130 [IFACE_ATTR_PREFIX_FILTER
] = { .name
= "prefix_filter", .type
= BLOBMSG_TYPE_STRING
},
133 static const struct uci_blob_param_info iface_attr_info
[IFACE_ATTR_MAX
] = {
134 [IFACE_ATTR_UPSTREAM
] = { .type
= BLOBMSG_TYPE_STRING
},
135 [IFACE_ATTR_DNS
] = { .type
= BLOBMSG_TYPE_STRING
},
136 [IFACE_ATTR_DOMAIN
] = { .type
= BLOBMSG_TYPE_STRING
},
139 const struct uci_blob_param_list interface_attr_list
= {
140 .n_params
= IFACE_ATTR_MAX
,
141 .params
= iface_attrs
,
142 .info
= iface_attr_info
,
150 LEASE_ATTR_LEASETIME
,
155 static const struct blobmsg_policy lease_attrs
[LEASE_ATTR_MAX
] = {
156 [LEASE_ATTR_IP
] = { .name
= "ip", .type
= BLOBMSG_TYPE_STRING
},
157 [LEASE_ATTR_MAC
] = { .name
= "mac", .type
= BLOBMSG_TYPE_STRING
},
158 [LEASE_ATTR_DUID
] = { .name
= "duid", .type
= BLOBMSG_TYPE_STRING
},
159 [LEASE_ATTR_HOSTID
] = { .name
= "hostid", .type
= BLOBMSG_TYPE_STRING
},
160 [LEASE_ATTR_LEASETIME
] = { .name
= "leasetime", .type
= BLOBMSG_TYPE_STRING
},
161 [LEASE_ATTR_NAME
] = { .name
= "name", .type
= BLOBMSG_TYPE_STRING
},
164 const struct uci_blob_param_list lease_attr_list
= {
165 .n_params
= LEASE_ATTR_MAX
,
166 .params
= lease_attrs
,
171 ODHCPD_ATTR_MAINDHCP
,
172 ODHCPD_ATTR_LEASEFILE
,
173 ODHCPD_ATTR_LEASETRIGGER
,
174 ODHCPD_ATTR_LOGLEVEL
,
178 static const struct blobmsg_policy odhcpd_attrs
[ODHCPD_ATTR_MAX
] = {
179 [ODHCPD_ATTR_LEGACY
] = { .name
= "legacy", .type
= BLOBMSG_TYPE_BOOL
},
180 [ODHCPD_ATTR_MAINDHCP
] = { .name
= "maindhcp", .type
= BLOBMSG_TYPE_BOOL
},
181 [ODHCPD_ATTR_LEASEFILE
] = { .name
= "leasefile", .type
= BLOBMSG_TYPE_STRING
},
182 [ODHCPD_ATTR_LEASETRIGGER
] = { .name
= "leasetrigger", .type
= BLOBMSG_TYPE_STRING
},
183 [ODHCPD_ATTR_LOGLEVEL
] = { .name
= "loglevel", .type
= BLOBMSG_TYPE_INT32
},
186 const struct uci_blob_param_list odhcpd_attr_list
= {
187 .n_params
= ODHCPD_ATTR_MAX
,
188 .params
= odhcpd_attrs
,
191 static const struct { const char *name
; uint8_t flag
; } ra_flags
[] = {
192 { .name
= "managed-config", .flag
= ND_RA_FLAG_MANAGED
},
193 { .name
= "other-config", .flag
= ND_RA_FLAG_OTHER
},
194 { .name
= "home-agent", .flag
= ND_RA_FLAG_HOME_AGENT
},
195 { .name
= "none", . flag
= 0 },
199 static int mkdir_p(char *dir
, mode_t mask
)
201 char *l
= strrchr(dir
, '/');
209 if (mkdir_p(dir
, mask
))
214 ret
= mkdir(dir
, mask
);
215 if (ret
&& errno
== EEXIST
)
219 syslog(LOG_ERR
, "mkdir(%s, %d) failed: %m\n", dir
, mask
);
224 static void set_interface_defaults(struct interface
*iface
)
226 iface
->ignore
= true;
227 iface
->dhcpv4
= MODE_DISABLED
;
228 iface
->dhcpv6
= MODE_DISABLED
;
229 iface
->ra
= MODE_DISABLED
;
230 iface
->ndp
= MODE_DISABLED
;
231 iface
->learn_routes
= 1;
232 iface
->dhcp_leasetime
= 43200;
233 iface
->dhcpv4_start
.s_addr
= htonl(START_DEFAULT
);
234 iface
->dhcpv4_end
.s_addr
= htonl(START_DEFAULT
+ LIMIT_DEFAULT
- 1);
235 iface
->dhcpv6_assignall
= true;
236 iface
->dhcpv6_pd
= true;
237 iface
->dhcpv6_na
= true;
238 iface
->ra_flags
= ND_RA_FLAG_OTHER
;
239 iface
->ra_slaac
= true;
240 iface
->ra_maxinterval
= 600;
241 iface
->ra_mininterval
= iface
->ra_maxinterval
/3;
242 iface
->ra_lifetime
= -1;
243 iface
->ra_dns
= true;
246 static void clean_interface(struct interface
*iface
)
250 free(iface
->upstream
);
251 free(iface
->dhcpv4_router
);
252 free(iface
->dhcpv4_dns
);
253 free(iface
->dhcpv6_raw
);
254 free(iface
->filter_class
);
255 memset(&iface
->ra
, 0, sizeof(*iface
) - offsetof(struct interface
, ra
));
256 set_interface_defaults(iface
);
259 static void close_interface(struct interface
*iface
)
261 avl_delete(&interfaces
, &iface
->avl
);
263 router_setup_interface(iface
, false);
264 dhcpv6_setup_interface(iface
, false);
265 ndp_setup_interface(iface
, false);
266 #ifdef DHCPV4_SUPPORT
267 dhcpv4_setup_interface(iface
, false);
270 clean_interface(iface
);
277 static int parse_mode(const char *mode
)
279 if (!strcmp(mode
, "disabled"))
280 return MODE_DISABLED
;
281 else if (!strcmp(mode
, "server"))
283 else if (!strcmp(mode
, "relay"))
285 else if (!strcmp(mode
, "hybrid"))
291 static int parse_ra_flags(uint8_t *flags
, struct blob_attr
*attr
)
293 struct blob_attr
*cur
;
296 blobmsg_for_each_attr(cur
, attr
, rem
) {
299 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
302 if (!blobmsg_check_attr(cur
, false))
305 for (i
= 0; ra_flags
[i
].name
; i
++) {
306 if (!strcmp(ra_flags
[i
].name
, blobmsg_get_string(cur
))) {
307 *flags
|= ra_flags
[i
].flag
;
312 if (!ra_flags
[i
].name
)
319 static void set_config(struct uci_section
*s
)
321 struct blob_attr
*tb
[ODHCPD_ATTR_MAX
], *c
;
323 blob_buf_init(&b
, 0);
324 uci_to_blob(&b
, s
, &odhcpd_attr_list
);
325 blobmsg_parse(odhcpd_attrs
, ODHCPD_ATTR_MAX
, tb
, blob_data(b
.head
), blob_len(b
.head
));
327 if ((c
= tb
[ODHCPD_ATTR_LEGACY
]))
328 config
.legacy
= blobmsg_get_bool(c
);
330 if ((c
= tb
[ODHCPD_ATTR_MAINDHCP
]))
331 config
.main_dhcpv4
= blobmsg_get_bool(c
);
333 if ((c
= tb
[ODHCPD_ATTR_LEASEFILE
])) {
334 free(config
.dhcp_statefile
);
335 config
.dhcp_statefile
= strdup(blobmsg_get_string(c
));
338 if ((c
= tb
[ODHCPD_ATTR_LEASETRIGGER
])) {
339 free(config
.dhcp_cb
);
340 config
.dhcp_cb
= strdup(blobmsg_get_string(c
));
343 if ((c
= tb
[ODHCPD_ATTR_LOGLEVEL
])) {
344 int log_level
= (blobmsg_get_u32(c
) & LOG_PRIMASK
);
346 if (config
.log_level
!= log_level
) {
347 config
.log_level
= log_level
;
348 setlogmask(LOG_UPTO(config
.log_level
));
353 static double parse_leasetime(struct blob_attr
*c
) {
354 char *val
= blobmsg_get_string(c
), *endptr
= NULL
;
355 double time
= strcmp(val
, "infinite") ? strtod(val
, &endptr
) : UINT32_MAX
;
357 if (time
&& endptr
&& endptr
[0]) {
358 if (endptr
[0] == 's')
360 else if (endptr
[0] == 'm')
362 else if (endptr
[0] == 'h')
364 else if (endptr
[0] == 'd')
366 else if (endptr
[0] == 'w')
367 time
*= 7 * 24 * 3600;
381 static void free_lease(struct lease
*l
)
387 static int set_lease(struct uci_section
*s
)
389 struct blob_attr
*tb
[LEASE_ATTR_MAX
], *c
;
394 blob_buf_init(&b
, 0);
395 uci_to_blob(&b
, s
, &lease_attr_list
);
396 blobmsg_parse(lease_attrs
, LEASE_ATTR_MAX
, tb
, blob_data(b
.head
), blob_len(b
.head
));
398 if ((c
= tb
[LEASE_ATTR_DUID
]))
399 duidlen
= (blobmsg_data_len(c
) - 1) / 2;
401 l
= calloc_a(sizeof(*l
), &duid
, duidlen
);
405 if ((c
= tb
[LEASE_ATTR_MAC
]))
406 if (!ether_aton_r(blobmsg_get_string(c
), &l
->mac
))
409 if ((c
= tb
[LEASE_ATTR_DUID
])) {
413 len
= odhcpd_unhexlify(l
->duid
, duidlen
, blobmsg_get_string(c
));
421 if ((c
= tb
[LEASE_ATTR_NAME
])) {
422 l
->hostname
= strdup(blobmsg_get_string(c
));
423 if (!l
->hostname
|| !odhcpd_valid_hostname(l
->hostname
))
427 if ((c
= tb
[LEASE_ATTR_IP
]))
428 if (inet_pton(AF_INET
, blobmsg_get_string(c
), &l
->ipaddr
) < 0)
431 if ((c
= tb
[LEASE_ATTR_HOSTID
])) {
433 l
->hostid
= strtoul(blobmsg_get_string(c
), NULL
, 16);
437 uint32_t i4a
= ntohl(l
->ipaddr
) & 0xff;
438 l
->hostid
= ((i4a
/ 100) << 8) | (((i4a
% 100) / 10) << 4) | (i4a
% 10);
441 if ((c
= tb
[LEASE_ATTR_LEASETIME
])) {
442 double time
= parse_leasetime(c
);
449 INIT_LIST_HEAD(&l
->assignments
);
450 vlist_add(&leases
, &l
->node
, l
);
460 int config_parse_interface(void *data
, size_t len
, const char *name
, bool overwrite
)
462 struct interface
*iface
;
463 struct blob_attr
*tb
[IFACE_ATTR_MAX
], *c
;
464 bool get_addrs
= false;
466 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
, data
, len
);
468 if (tb
[IFACE_ATTR_INTERFACE
])
469 name
= blobmsg_get_string(tb
[IFACE_ATTR_INTERFACE
]);
474 iface
= avl_find_element(&interfaces
, name
, iface
, avl
);
478 iface
= calloc_a(sizeof(*iface
), &new_name
, strlen(name
) + 1);
482 iface
->name
= strcpy(new_name
, name
);
483 iface
->avl
.key
= iface
->name
;
484 iface
->router_event
.uloop
.fd
= -1;
485 iface
->dhcpv6_event
.uloop
.fd
= -1;
486 iface
->ndp_event
.uloop
.fd
= -1;
487 iface
->ndp_ping_fd
= -1;
488 iface
->dhcpv4_event
.uloop
.fd
= -1;
489 INIT_LIST_HEAD(&iface
->ia_assignments
);
490 INIT_LIST_HEAD(&iface
->dhcpv4_assignments
);
491 INIT_LIST_HEAD(&iface
->dhcpv4_fr_ips
);
493 set_interface_defaults(iface
);
495 avl_insert(&interfaces
, &iface
->avl
);
496 get_addrs
= overwrite
= true;
499 const char *ifname
= NULL
;
501 if ((c
= tb
[IFACE_ATTR_IFNAME
]))
502 ifname
= blobmsg_get_string(c
);
503 else if ((c
= tb
[IFACE_ATTR_NETWORKID
]))
504 ifname
= blobmsg_get_string(c
);
508 if (overwrite
|| !iface
->ifname
)
509 ifname
= ubus_get_ifname(name
);
512 if (!iface
->ifname
&& !ifname
)
517 iface
->ifname
= strdup(ifname
);
522 if (!iface
->ifindex
&&
523 (iface
->ifindex
= if_nametoindex(iface
->ifname
)) <= 0)
528 ssize_t len
= netlink_get_interface_addrs(iface
->ifindex
,
529 true, &iface
->addr6
);
532 iface
->addr6_len
= len
;
534 len
= netlink_get_interface_addrs(iface
->ifindex
,
535 false, &iface
->addr4
);
537 iface
->addr4_len
= len
;
542 if ((c
= tb
[IFACE_ATTR_DYNAMICDHCP
]))
543 iface
->no_dynamic_dhcp
= !blobmsg_get_bool(c
);
545 if ((c
= tb
[IFACE_ATTR_LEASETIME
])) {
546 double time
= parse_leasetime(c
);
550 iface
->dhcp_leasetime
= time
;
553 if ((c
= tb
[IFACE_ATTR_START
])) {
554 iface
->dhcpv4_start
.s_addr
= htonl(blobmsg_get_u32(c
));
555 iface
->dhcpv4_end
.s_addr
= htonl(ntohl(iface
->dhcpv4_start
.s_addr
) +
558 if (config
.main_dhcpv4
&& config
.legacy
)
559 iface
->dhcpv4
= MODE_SERVER
;
562 if ((c
= tb
[IFACE_ATTR_LIMIT
]))
563 iface
->dhcpv4_end
.s_addr
= htonl(ntohl(iface
->dhcpv4_start
.s_addr
) +
564 blobmsg_get_u32(c
) - 1);
566 if ((c
= tb
[IFACE_ATTR_MASTER
]))
567 iface
->master
= blobmsg_get_bool(c
);
569 if (overwrite
&& (c
= tb
[IFACE_ATTR_UPSTREAM
])) {
570 struct blob_attr
*cur
;
573 blobmsg_for_each_attr(cur
, c
, rem
) {
574 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, false))
577 iface
->upstream
= realloc(iface
->upstream
,
578 iface
->upstream_len
+ blobmsg_data_len(cur
));
579 if (!iface
->upstream
)
582 memcpy(iface
->upstream
+ iface
->upstream_len
, blobmsg_get_string(cur
), blobmsg_data_len(cur
));
583 iface
->upstream_len
+= blobmsg_data_len(cur
);
588 if ((c
= tb
[IFACE_ATTR_RA
])) {
589 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0) {
592 if (iface
->ra
!= MODE_DISABLED
)
593 iface
->ignore
= false;
598 if ((c
= tb
[IFACE_ATTR_DHCPV4
])) {
599 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0) {
600 if (config
.main_dhcpv4
) {
601 iface
->dhcpv4
= mode
;
603 if (iface
->dhcpv4
!= MODE_DISABLED
)
604 iface
->ignore
= false;
611 if ((c
= tb
[IFACE_ATTR_DHCPV6
])) {
612 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0) {
613 iface
->dhcpv6
= mode
;
615 if (iface
->dhcpv6
!= MODE_DISABLED
)
616 iface
->ignore
= false;
621 if ((c
= tb
[IFACE_ATTR_NDP
])) {
622 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0) {
625 if (iface
->ndp
!= MODE_DISABLED
)
626 iface
->ignore
= false;
631 if ((c
= tb
[IFACE_ATTR_ROUTER
])) {
632 struct blob_attr
*cur
;
635 blobmsg_for_each_attr(cur
, c
, rem
) {
636 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, false))
639 struct in_addr addr4
;
640 if (inet_pton(AF_INET
, blobmsg_get_string(cur
), &addr4
) == 1) {
641 iface
->dhcpv4_router
= realloc(iface
->dhcpv4_router
,
642 (++iface
->dhcpv4_router_cnt
) * sizeof(*iface
->dhcpv4_router
));
643 if (!iface
->dhcpv4_router
)
646 iface
->dhcpv4_router
[iface
->dhcpv4_router_cnt
- 1] = addr4
;
652 if ((c
= tb
[IFACE_ATTR_DNS
])) {
653 struct blob_attr
*cur
;
656 iface
->always_rewrite_dns
= true;
657 blobmsg_for_each_attr(cur
, c
, rem
) {
658 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, false))
661 struct in_addr addr4
;
662 struct in6_addr addr6
;
663 if (inet_pton(AF_INET
, blobmsg_get_string(cur
), &addr4
) == 1) {
664 if (addr4
.s_addr
== INADDR_ANY
)
667 iface
->dhcpv4_dns
= realloc(iface
->dhcpv4_dns
,
668 (++iface
->dhcpv4_dns_cnt
) * sizeof(*iface
->dhcpv4_dns
));
669 if (!iface
->dhcpv4_dns
)
672 iface
->dhcpv4_dns
[iface
->dhcpv4_dns_cnt
- 1] = addr4
;
673 } else if (inet_pton(AF_INET6
, blobmsg_get_string(cur
), &addr6
) == 1) {
674 if (IN6_IS_ADDR_UNSPECIFIED(&addr6
))
677 iface
->dns
= realloc(iface
->dns
,
678 (++iface
->dns_cnt
) * sizeof(*iface
->dns
));
682 iface
->dns
[iface
->dns_cnt
- 1] = addr6
;
688 if ((c
= tb
[IFACE_ATTR_DOMAIN
])) {
689 struct blob_attr
*cur
;
692 blobmsg_for_each_attr(cur
, c
, rem
) {
693 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, false))
697 char *domain
= blobmsg_get_string(cur
);
698 size_t domainlen
= strlen(domain
);
699 if (domainlen
> 0 && domain
[domainlen
- 1] == '.')
700 domain
[domainlen
- 1] = 0;
702 int len
= dn_comp(domain
, buf
, sizeof(buf
), NULL
, NULL
);
706 iface
->search
= realloc(iface
->search
, iface
->search_len
+ len
);
710 memcpy(&iface
->search
[iface
->search_len
], buf
, len
);
711 iface
->search_len
+= len
;
715 if ((c
= tb
[IFACE_ATTR_FILTER_CLASS
])) {
716 iface
->filter_class
= realloc(iface
->filter_class
, blobmsg_data_len(c
) + 1);
717 memcpy(iface
->filter_class
, blobmsg_get_string(c
), blobmsg_data_len(c
) + 1);
720 if ((c
= tb
[IFACE_ATTR_DHCPV4_FORCERECONF
]))
721 iface
->dhcpv4_forcereconf
= blobmsg_get_bool(c
);
723 if ((c
= tb
[IFACE_ATTR_DHCPV6_RAW
])) {
724 iface
->dhcpv6_raw_len
= blobmsg_data_len(c
) / 2;
725 iface
->dhcpv6_raw
= realloc(iface
->dhcpv6_raw
, iface
->dhcpv6_raw_len
);
726 odhcpd_unhexlify(iface
->dhcpv6_raw
, iface
->dhcpv6_raw_len
, blobmsg_get_string(c
));
729 if ((c
= tb
[IFACE_ATTR_DHCPV6_ASSIGNALL
]))
730 iface
->dhcpv6_assignall
= blobmsg_get_bool(c
);
732 if ((c
= tb
[IFACE_ATTR_DHCPV6_PD
]))
733 iface
->dhcpv6_pd
= blobmsg_get_bool(c
);
735 if ((c
= tb
[IFACE_ATTR_DHCPV6_NA
]))
736 iface
->dhcpv6_na
= blobmsg_get_bool(c
);
738 if ((c
= tb
[IFACE_ATTR_RA_DEFAULT
]))
739 iface
->default_router
= blobmsg_get_u32(c
);
741 if (!tb
[IFACE_ATTR_RA_FLAGS
] && !tb
[IFACE_ATTR_RA_SLAAC
] &&
742 (c
= tb
[IFACE_ATTR_RA_MANAGEMENT
])) {
743 switch (blobmsg_get_u32(c
)) {
745 iface
->ra_flags
= ND_RA_FLAG_OTHER
;
746 iface
->ra_slaac
= true;
749 iface
->ra_flags
= ND_RA_FLAG_OTHER
|ND_RA_FLAG_MANAGED
;
750 iface
->ra_slaac
= true;
753 iface
->ra_flags
= ND_RA_FLAG_OTHER
|ND_RA_FLAG_MANAGED
;
754 iface
->ra_slaac
= false;
761 if ((c
= tb
[IFACE_ATTR_RA_FLAGS
])) {
763 if (parse_ra_flags(&iface
->ra_flags
, c
) < 0)
767 if ((c
= tb
[IFACE_ATTR_RA_REACHABLETIME
])) {
768 uint32_t ra_reachabletime
= blobmsg_get_u32(c
);
769 if (ra_reachabletime
> 3600000)
772 iface
->ra_reachabletime
= ra_reachabletime
;
775 if ((c
= tb
[IFACE_ATTR_RA_RETRANSTIME
])) {
776 uint32_t ra_retranstime
= blobmsg_get_u32(c
);
777 if (ra_retranstime
> 60000)
780 iface
->ra_retranstime
= ra_retranstime
;
783 if ((c
= tb
[IFACE_ATTR_RA_HOPLIMIT
])) {
784 uint32_t ra_hoplimit
= blobmsg_get_u32(c
);
785 if (ra_hoplimit
> 255)
788 iface
->ra_hoplimit
= ra_hoplimit
;
791 if ((c
= tb
[IFACE_ATTR_RA_MTU
])) {
792 uint32_t ra_mtu
= blobmsg_get_u32(c
);
793 if (ra_mtu
< 1280 || ra_mtu
> 65535)
796 iface
->ra_mtu
= ra_mtu
;
799 if ((c
= tb
[IFACE_ATTR_RA_SLAAC
]))
800 iface
->ra_slaac
= blobmsg_get_bool(c
);
802 if ((c
= tb
[IFACE_ATTR_RA_OFFLINK
]))
803 iface
->ra_not_onlink
= blobmsg_get_bool(c
);
805 if ((c
= tb
[IFACE_ATTR_RA_ADVROUTER
]))
806 iface
->ra_advrouter
= blobmsg_get_bool(c
);
808 if ((c
= tb
[IFACE_ATTR_RA_MININTERVAL
]))
809 iface
->ra_mininterval
= blobmsg_get_u32(c
);
811 if ((c
= tb
[IFACE_ATTR_RA_MAXINTERVAL
]))
812 iface
->ra_maxinterval
= blobmsg_get_u32(c
);
814 if ((c
= tb
[IFACE_ATTR_RA_LIFETIME
]))
815 iface
->ra_lifetime
= blobmsg_get_u32(c
);
817 if ((c
= tb
[IFACE_ATTR_RA_USELEASETIME
]))
818 iface
->ra_useleasetime
= blobmsg_get_bool(c
);
820 if ((c
= tb
[IFACE_ATTR_RA_DNS
]))
821 iface
->ra_dns
= blobmsg_get_bool(c
);
823 if ((c
= tb
[IFACE_ATTR_RA_PREFERENCE
])) {
824 const char *prio
= blobmsg_get_string(c
);
826 if (!strcmp(prio
, "high"))
827 iface
->route_preference
= 1;
828 else if (!strcmp(prio
, "low"))
829 iface
->route_preference
= -1;
830 else if (!strcmp(prio
, "medium") || !strcmp(prio
, "default"))
831 iface
->route_preference
= 0;
836 if ((c
= tb
[IFACE_ATTR_PD_MANAGER
]))
837 strncpy(iface
->dhcpv6_pd_manager
, blobmsg_get_string(c
),
838 sizeof(iface
->dhcpv6_pd_manager
) - 1);
840 if ((c
= tb
[IFACE_ATTR_PD_CER
]) &&
841 inet_pton(AF_INET6
, blobmsg_get_string(c
), &iface
->dhcpv6_pd_cer
) < 1)
844 if ((c
= tb
[IFACE_ATTR_NDPROXY_ROUTING
]))
845 iface
->learn_routes
= blobmsg_get_bool(c
);
847 if ((c
= tb
[IFACE_ATTR_NDPROXY_SLAVE
]))
848 iface
->external
= blobmsg_get_bool(c
);
850 if ((c
= tb
[IFACE_ATTR_PREFIX_FILTER
])) {
851 const char *str
= blobmsg_get_string(c
);
852 char *astr
= malloc(strlen(str
) + 1);
856 if (!astr
|| !strcpy(astr
, str
) ||
857 (delim
= strchr(astr
, '/')) == NULL
|| (*(delim
++) = 0) ||
858 sscanf(delim
, "%i", &l
) == 0 || l
> 128 ||
859 inet_pton(AF_INET6
, astr
, &iface
->pio_filter_addr
) == 0)
860 iface
->pio_filter_length
= 0;
862 iface
->pio_filter_length
= l
;
871 close_interface(iface
);
875 static int set_interface(struct uci_section
*s
)
877 blob_buf_init(&b
, 0);
878 uci_to_blob(&b
, s
, &interface_attr_list
);
880 return config_parse_interface(blob_data(b
.head
), blob_len(b
.head
), s
->e
.name
, true);
883 static void lease_delete_assignments(struct lease
*l
, bool v6
)
885 struct dhcp_assignment
*a
, *tmp
;
886 unsigned int flag
= v6
? OAF_DHCPV6
: OAF_DHCPV4
;
888 list_for_each_entry_safe(a
, tmp
, &l
->assignments
, lease_list
) {
894 static void lease_update_assignments(struct lease
*l
)
896 struct dhcp_assignment
*a
;
898 list_for_each_entry(a
, &l
->assignments
, lease_list
) {
904 a
->hostname
= strdup(l
->hostname
);
906 a
->leasetime
= l
->leasetime
;
910 static int lease_cmp(const void *k1
, const void *k2
, _unused
void *ptr
)
912 const struct lease
*l1
= k1
, *l2
= k2
;
915 if (l1
->duid_len
!= l2
->duid_len
)
916 return l1
->duid_len
- l2
->duid_len
;
918 if (l1
->duid_len
&& l2
->duid_len
)
919 cmp
= memcmp(l1
->duid
, l2
->duid
, l1
->duid_len
);
924 return memcmp(l1
->mac
.ether_addr_octet
, l2
->mac
.ether_addr_octet
,
925 sizeof(l1
->mac
.ether_addr_octet
));
928 static void lease_change_config(struct lease
*l_old
, struct lease
*l_new
)
932 if ((!!l_new
->hostname
!= !!l_old
->hostname
) ||
933 (l_new
->hostname
&& strcmp(l_new
->hostname
, l_old
->hostname
))) {
934 free(l_old
->hostname
);
935 l_old
->hostname
= NULL
;
938 l_old
->hostname
= strdup(l_new
->hostname
);
943 if (l_old
->leasetime
!= l_new
->leasetime
) {
944 l_old
->leasetime
= l_new
->leasetime
;
948 if (l_old
->ipaddr
!= l_new
->ipaddr
) {
949 l_old
->ipaddr
= l_new
->ipaddr
;
950 lease_delete_assignments(l_old
, false);
953 if (l_old
->hostid
!= l_new
->hostid
) {
954 l_old
->hostid
= l_new
->hostid
;
955 lease_delete_assignments(l_old
, true);
959 lease_update_assignments(l_old
);
964 static void lease_delete(struct lease
*l
)
966 struct dhcp_assignment
*a
, *tmp
;
968 list_for_each_entry_safe(a
, tmp
, &l
->assignments
, lease_list
)
974 static void lease_update(_unused
struct vlist_tree
*tree
, struct vlist_node
*node_new
,
975 struct vlist_node
*node_old
)
977 struct lease
*lease_new
= container_of(node_new
, struct lease
, node
);
978 struct lease
*lease_old
= container_of(node_old
, struct lease
, node
);
980 if (node_old
&& node_new
)
981 lease_change_config(lease_old
, lease_new
);
983 lease_delete(lease_old
);
986 struct lease
*config_find_lease_by_duid(const uint8_t *duid
, const uint16_t len
)
990 vlist_for_each_element(&leases
, l
, node
) {
991 if (l
->duid_len
== len
&& !memcmp(l
->duid
, duid
, len
))
998 struct lease
*config_find_lease_by_mac(const uint8_t *mac
)
1002 vlist_for_each_element(&leases
, l
, node
) {
1003 if (!memcmp(l
->mac
.ether_addr_octet
, mac
,
1004 sizeof(l
->mac
.ether_addr_octet
)))
1011 struct lease
*config_find_lease_by_hostid(const uint32_t hostid
)
1015 vlist_for_each_element(&leases
, l
, node
) {
1016 if (l
->hostid
== hostid
)
1023 struct lease
*config_find_lease_by_ipaddr(const uint32_t ipaddr
)
1027 vlist_for_each_element(&leases
, l
, node
) {
1028 if (l
->ipaddr
== ipaddr
)
1035 void odhcpd_reload(void)
1037 struct uci_context
*uci
= uci_alloc_context();
1038 struct interface
*master
= NULL
, *i
, *tmp
;
1043 vlist_update(&leases
);
1044 avl_for_each_element(&interfaces
, i
, avl
)
1047 struct uci_package
*dhcp
= NULL
;
1048 if (!uci_load(uci
, "dhcp", &dhcp
)) {
1049 struct uci_element
*e
;
1051 /* 1. Global settings */
1052 uci_foreach_element(&dhcp
->sections
, e
) {
1053 struct uci_section
*s
= uci_to_section(e
);
1054 if (!strcmp(s
->type
, "odhcpd"))
1059 uci_foreach_element(&dhcp
->sections
, e
) {
1060 struct uci_section
*s
= uci_to_section(e
);
1061 if (!strcmp(s
->type
, "dhcp"))
1065 /* 3. Static leases */
1066 uci_foreach_element(&dhcp
->sections
, e
) {
1067 struct uci_section
* s
= uci_to_section(e
);
1068 if (!strcmp(s
->type
, "host"))
1073 if (config
.dhcp_statefile
) {
1074 char *path
= strdup(config
.dhcp_statefile
);
1076 mkdir_p(dirname(path
), 0755);
1080 vlist_flush(&leases
);
1083 ubus_apply_network();
1086 bool any_dhcpv6_slave
= false, any_ra_slave
= false, any_ndp_slave
= false;
1089 avl_for_each_element(&interfaces
, i
, avl
) {
1093 if (i
->dhcpv6
== MODE_HYBRID
|| i
->dhcpv6
== MODE_RELAY
)
1094 any_dhcpv6_slave
= true;
1096 if (i
->ra
== MODE_HYBRID
|| i
->ra
== MODE_RELAY
)
1097 any_ra_slave
= true;
1099 if (i
->ndp
== MODE_HYBRID
|| i
->ndp
== MODE_RELAY
)
1100 any_ndp_slave
= true;
1103 /* Evaluate hybrid mode for master */
1104 avl_for_each_element(&interfaces
, i
, avl
) {
1108 enum odhcpd_mode hybrid_mode
= MODE_DISABLED
;
1110 if (!ubus_has_prefix(i
->name
, i
->ifname
))
1111 hybrid_mode
= MODE_RELAY
;
1114 if (i
->dhcpv6
== MODE_HYBRID
)
1115 i
->dhcpv6
= hybrid_mode
;
1117 if (i
->dhcpv6
== MODE_RELAY
&& !any_dhcpv6_slave
)
1118 i
->dhcpv6
= MODE_DISABLED
;
1120 if (i
->ra
== MODE_HYBRID
)
1121 i
->ra
= hybrid_mode
;
1123 if (i
->ra
== MODE_RELAY
&& !any_ra_slave
)
1124 i
->ra
= MODE_DISABLED
;
1126 if (i
->ndp
== MODE_HYBRID
)
1127 i
->ndp
= hybrid_mode
;
1129 if (i
->ndp
== MODE_RELAY
&& !any_ndp_slave
)
1130 i
->ndp
= MODE_DISABLED
;
1132 if (i
->dhcpv6
== MODE_RELAY
|| i
->ra
== MODE_RELAY
|| i
->ndp
== MODE_RELAY
)
1137 avl_for_each_element_safe(&interfaces
, i
, avl
, tmp
) {
1139 /* Resolve hybrid mode */
1140 if (i
->dhcpv6
== MODE_HYBRID
)
1141 i
->dhcpv6
= (master
&& master
->dhcpv6
== MODE_RELAY
) ?
1142 MODE_RELAY
: MODE_SERVER
;
1144 if (i
->ra
== MODE_HYBRID
)
1145 i
->ra
= (master
&& master
->ra
== MODE_RELAY
) ?
1146 MODE_RELAY
: MODE_SERVER
;
1148 if (i
->ndp
== MODE_HYBRID
)
1149 i
->ndp
= (master
&& master
->ndp
== MODE_RELAY
) ?
1150 MODE_RELAY
: MODE_DISABLED
;
1152 router_setup_interface(i
, i
->ra
!= MODE_DISABLED
);
1153 dhcpv6_setup_interface(i
, i
->dhcpv6
!= MODE_DISABLED
);
1154 ndp_setup_interface(i
, i
->ndp
!= MODE_DISABLED
);
1155 #ifdef DHCPV4_SUPPORT
1156 dhcpv4_setup_interface(i
, i
->dhcpv4
!= MODE_DISABLED
);
1162 uci_unload(uci
, dhcp
);
1163 uci_free_context(uci
);
1166 static void handle_signal(int signal
)
1170 if (signal
== SIGHUP
) {
1171 if (write(reload_pipe
[1], b
, sizeof(b
)) < 0) {}
1176 static void reload_cb(struct uloop_fd
*u
, _unused
unsigned int events
)
1179 if (read(u
->fd
, b
, sizeof(b
)) < 0) {}
1184 static struct uloop_fd reload_fd
= { .fd
= -1, .cb
= reload_cb
};
1186 void odhcpd_run(void)
1188 if (pipe2(reload_pipe
, O_NONBLOCK
| O_CLOEXEC
) < 0) {}
1190 reload_fd
.fd
= reload_pipe
[0];
1191 uloop_fd_add(&reload_fd
, ULOOP_READ
);
1193 signal(SIGTERM
, handle_signal
);
1194 signal(SIGINT
, handle_signal
);
1195 signal(SIGHUP
, handle_signal
);