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
42 IFACE_ATTR_DYNAMICDHCP
,
55 IFACE_ATTR_FILTER_CLASS
,
56 IFACE_ATTR_DHCPV4_FORCERECONF
,
57 IFACE_ATTR_DHCPV6_RAW
,
58 IFACE_ATTR_DHCPV6_ASSIGNALL
,
61 IFACE_ATTR_RA_DEFAULT
,
62 IFACE_ATTR_RA_MANAGEMENT
,
65 IFACE_ATTR_RA_OFFLINK
,
66 IFACE_ATTR_RA_PREFERENCE
,
67 IFACE_ATTR_RA_ADVROUTER
,
68 IFACE_ATTR_RA_MININTERVAL
,
69 IFACE_ATTR_RA_MAXINTERVAL
,
70 IFACE_ATTR_RA_LIFETIME
,
71 IFACE_ATTR_RA_USELEASETIME
,
72 IFACE_ATTR_RA_REACHABLETIME
,
73 IFACE_ATTR_RA_RETRANSTIME
,
74 IFACE_ATTR_RA_HOPLIMIT
,
77 IFACE_ATTR_PD_MANAGER
,
79 IFACE_ATTR_NDPROXY_ROUTING
,
80 IFACE_ATTR_NDPROXY_SLAVE
,
81 IFACE_ATTR_PREFIX_FILTER
,
85 static const struct blobmsg_policy iface_attrs
[IFACE_ATTR_MAX
] = {
86 [IFACE_ATTR_INTERFACE
] = { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
87 [IFACE_ATTR_IFNAME
] = { .name
= "ifname", .type
= BLOBMSG_TYPE_STRING
},
88 [IFACE_ATTR_NETWORKID
] = { .name
= "networkid", .type
= BLOBMSG_TYPE_STRING
},
89 [IFACE_ATTR_DYNAMICDHCP
] = { .name
= "dynamicdhcp", .type
= BLOBMSG_TYPE_BOOL
},
90 [IFACE_ATTR_LEASETIME
] = { .name
= "leasetime", .type
= BLOBMSG_TYPE_STRING
},
91 [IFACE_ATTR_START
] = { .name
= "start", .type
= BLOBMSG_TYPE_INT32
},
92 [IFACE_ATTR_LIMIT
] = { .name
= "limit", .type
= BLOBMSG_TYPE_INT32
},
93 [IFACE_ATTR_MASTER
] = { .name
= "master", .type
= BLOBMSG_TYPE_BOOL
},
94 [IFACE_ATTR_UPSTREAM
] = { .name
= "upstream", .type
= BLOBMSG_TYPE_ARRAY
},
95 [IFACE_ATTR_RA
] = { .name
= "ra", .type
= BLOBMSG_TYPE_STRING
},
96 [IFACE_ATTR_DHCPV4
] = { .name
= "dhcpv4", .type
= BLOBMSG_TYPE_STRING
},
97 [IFACE_ATTR_DHCPV6
] = { .name
= "dhcpv6", .type
= BLOBMSG_TYPE_STRING
},
98 [IFACE_ATTR_NDP
] = { .name
= "ndp", .type
= BLOBMSG_TYPE_STRING
},
99 [IFACE_ATTR_ROUTER
] = { .name
= "router", .type
= BLOBMSG_TYPE_ARRAY
},
100 [IFACE_ATTR_DNS
] = { .name
= "dns", .type
= BLOBMSG_TYPE_ARRAY
},
101 [IFACE_ATTR_DOMAIN
] = { .name
= "domain", .type
= BLOBMSG_TYPE_ARRAY
},
102 [IFACE_ATTR_FILTER_CLASS
] = { .name
= "filter_class", .type
= BLOBMSG_TYPE_STRING
},
103 [IFACE_ATTR_DHCPV4_FORCERECONF
] = { .name
= "dhcpv4_forcereconf", .type
= BLOBMSG_TYPE_BOOL
},
104 [IFACE_ATTR_DHCPV6_RAW
] = { .name
= "dhcpv6_raw", .type
= BLOBMSG_TYPE_STRING
},
105 [IFACE_ATTR_DHCPV6_ASSIGNALL
] = { .name
="dhcpv6_assignall", .type
= BLOBMSG_TYPE_BOOL
},
106 [IFACE_ATTR_DHCPV6_PD
] = { .name
= "dhcpv6_pd", .type
= BLOBMSG_TYPE_BOOL
},
107 [IFACE_ATTR_DHCPV6_NA
] = { .name
= "dhcpv6_na", .type
= BLOBMSG_TYPE_BOOL
},
108 [IFACE_ATTR_PD_MANAGER
] = { .name
= "pd_manager", .type
= BLOBMSG_TYPE_STRING
},
109 [IFACE_ATTR_PD_CER
] = { .name
= "pd_cer", .type
= BLOBMSG_TYPE_STRING
},
110 [IFACE_ATTR_RA_DEFAULT
] = { .name
= "ra_default", .type
= BLOBMSG_TYPE_INT32
},
111 [IFACE_ATTR_RA_MANAGEMENT
] = { .name
= "ra_management", .type
= BLOBMSG_TYPE_INT32
},
112 [IFACE_ATTR_RA_FLAGS
] = { .name
= "ra_flags", . type
= BLOBMSG_TYPE_ARRAY
},
113 [IFACE_ATTR_RA_SLAAC
] = { .name
= "ra_slaac", .type
= BLOBMSG_TYPE_BOOL
},
114 [IFACE_ATTR_RA_OFFLINK
] = { .name
= "ra_offlink", .type
= BLOBMSG_TYPE_BOOL
},
115 [IFACE_ATTR_RA_PREFERENCE
] = { .name
= "ra_preference", .type
= BLOBMSG_TYPE_STRING
},
116 [IFACE_ATTR_RA_ADVROUTER
] = { .name
= "ra_advrouter", .type
= BLOBMSG_TYPE_BOOL
},
117 [IFACE_ATTR_RA_MININTERVAL
] = { .name
= "ra_mininterval", .type
= BLOBMSG_TYPE_INT32
},
118 [IFACE_ATTR_RA_MAXINTERVAL
] = { .name
= "ra_maxinterval", .type
= BLOBMSG_TYPE_INT32
},
119 [IFACE_ATTR_RA_LIFETIME
] = { .name
= "ra_lifetime", .type
= BLOBMSG_TYPE_INT32
},
120 [IFACE_ATTR_RA_USELEASETIME
] = { .name
= "ra_useleasetime", .type
= BLOBMSG_TYPE_BOOL
},
121 [IFACE_ATTR_RA_REACHABLETIME
] = { .name
= "ra_reachabletime", .type
= BLOBMSG_TYPE_INT32
},
122 [IFACE_ATTR_RA_RETRANSTIME
] = { .name
= "ra_retranstime", .type
= BLOBMSG_TYPE_INT32
},
123 [IFACE_ATTR_RA_HOPLIMIT
] = { .name
= "ra_hoplimit", .type
= BLOBMSG_TYPE_INT32
},
124 [IFACE_ATTR_RA_MTU
] = { .name
= "ra_mtu", .type
= BLOBMSG_TYPE_INT32
},
125 [IFACE_ATTR_RA_DNS
] = { .name
= "ra_dns", .type
= BLOBMSG_TYPE_BOOL
},
126 [IFACE_ATTR_NDPROXY_ROUTING
] = { .name
= "ndproxy_routing", .type
= BLOBMSG_TYPE_BOOL
},
127 [IFACE_ATTR_NDPROXY_SLAVE
] = { .name
= "ndproxy_slave", .type
= BLOBMSG_TYPE_BOOL
},
128 [IFACE_ATTR_PREFIX_FILTER
] = { .name
= "prefix_filter", .type
= BLOBMSG_TYPE_STRING
},
131 static const struct uci_blob_param_info iface_attr_info
[IFACE_ATTR_MAX
] = {
132 [IFACE_ATTR_UPSTREAM
] = { .type
= BLOBMSG_TYPE_STRING
},
133 [IFACE_ATTR_DNS
] = { .type
= BLOBMSG_TYPE_STRING
},
134 [IFACE_ATTR_DOMAIN
] = { .type
= BLOBMSG_TYPE_STRING
},
137 const struct uci_blob_param_list interface_attr_list
= {
138 .n_params
= IFACE_ATTR_MAX
,
139 .params
= iface_attrs
,
140 .info
= iface_attr_info
,
148 LEASE_ATTR_LEASETIME
,
153 static const struct blobmsg_policy lease_attrs
[LEASE_ATTR_MAX
] = {
154 [LEASE_ATTR_IP
] = { .name
= "ip", .type
= BLOBMSG_TYPE_STRING
},
155 [LEASE_ATTR_MAC
] = { .name
= "mac", .type
= BLOBMSG_TYPE_STRING
},
156 [LEASE_ATTR_DUID
] = { .name
= "duid", .type
= BLOBMSG_TYPE_STRING
},
157 [LEASE_ATTR_HOSTID
] = { .name
= "hostid", .type
= BLOBMSG_TYPE_STRING
},
158 [LEASE_ATTR_LEASETIME
] = { .name
= "leasetime", .type
= BLOBMSG_TYPE_STRING
},
159 [LEASE_ATTR_NAME
] = { .name
= "name", .type
= BLOBMSG_TYPE_STRING
},
162 const struct uci_blob_param_list lease_attr_list
= {
163 .n_params
= LEASE_ATTR_MAX
,
164 .params
= lease_attrs
,
169 ODHCPD_ATTR_MAINDHCP
,
170 ODHCPD_ATTR_LEASEFILE
,
171 ODHCPD_ATTR_LEASETRIGGER
,
172 ODHCPD_ATTR_LOGLEVEL
,
176 static const struct blobmsg_policy odhcpd_attrs
[ODHCPD_ATTR_MAX
] = {
177 [ODHCPD_ATTR_LEGACY
] = { .name
= "legacy", .type
= BLOBMSG_TYPE_BOOL
},
178 [ODHCPD_ATTR_MAINDHCP
] = { .name
= "maindhcp", .type
= BLOBMSG_TYPE_BOOL
},
179 [ODHCPD_ATTR_LEASEFILE
] = { .name
= "leasefile", .type
= BLOBMSG_TYPE_STRING
},
180 [ODHCPD_ATTR_LEASETRIGGER
] = { .name
= "leasetrigger", .type
= BLOBMSG_TYPE_STRING
},
181 [ODHCPD_ATTR_LOGLEVEL
] = { .name
= "loglevel", .type
= BLOBMSG_TYPE_INT32
},
184 const struct uci_blob_param_list odhcpd_attr_list
= {
185 .n_params
= ODHCPD_ATTR_MAX
,
186 .params
= odhcpd_attrs
,
189 static const struct { const char *name
; uint8_t flag
; } ra_flags
[] = {
190 { .name
= "managed-config", .flag
= ND_RA_FLAG_MANAGED
},
191 { .name
= "other-config", .flag
= ND_RA_FLAG_OTHER
},
192 { .name
= "home-agent", .flag
= ND_RA_FLAG_HOME_AGENT
},
193 { .name
= "none", . flag
= 0 },
197 static int mkdir_p(char *dir
, mode_t mask
)
199 char *l
= strrchr(dir
, '/');
207 if (mkdir_p(dir
, mask
))
212 ret
= mkdir(dir
, mask
);
213 if (ret
&& errno
== EEXIST
)
217 syslog(LOG_ERR
, "mkdir(%s, %d) failed: %m\n", dir
, mask
);
222 static void set_interface_defaults(struct interface
*iface
)
224 iface
->ignore
= true;
225 iface
->dhcpv4
= MODE_DISABLED
;
226 iface
->dhcpv6
= MODE_DISABLED
;
227 iface
->ra
= MODE_DISABLED
;
228 iface
->ndp
= MODE_DISABLED
;
229 iface
->learn_routes
= 1;
230 iface
->dhcpv4_leasetime
= 43200;
231 iface
->dhcpv4_start
.s_addr
= htonl(START_DEFAULT
);
232 iface
->dhcpv4_end
.s_addr
= htonl(START_DEFAULT
+ LIMIT_DEFAULT
- 1);
233 iface
->dhcpv6_assignall
= true;
234 iface
->dhcpv6_pd
= true;
235 iface
->dhcpv6_na
= true;
236 iface
->ra_flags
= ND_RA_FLAG_OTHER
;
237 iface
->ra_slaac
= true;
238 iface
->ra_maxinterval
= 600;
239 iface
->ra_mininterval
= iface
->ra_maxinterval
/3;
240 iface
->ra_lifetime
= -1;
241 iface
->ra_dns
= true;
244 static void clean_interface(struct interface
*iface
)
248 free(iface
->upstream
);
249 free(iface
->dhcpv4_router
);
250 free(iface
->dhcpv4_dns
);
251 free(iface
->dhcpv6_raw
);
252 free(iface
->filter_class
);
253 memset(&iface
->ra
, 0, sizeof(*iface
) - offsetof(struct interface
, ra
));
254 set_interface_defaults(iface
);
257 static void close_interface(struct interface
*iface
)
259 avl_delete(&interfaces
, &iface
->avl
);
261 router_setup_interface(iface
, false);
262 dhcpv6_setup_interface(iface
, false);
263 ndp_setup_interface(iface
, false);
264 #ifdef DHCPV4_SUPPORT
265 dhcpv4_setup_interface(iface
, false);
268 clean_interface(iface
);
275 static int parse_mode(const char *mode
)
277 if (!strcmp(mode
, "disabled"))
278 return MODE_DISABLED
;
279 else if (!strcmp(mode
, "server"))
281 else if (!strcmp(mode
, "relay"))
283 else if (!strcmp(mode
, "hybrid"))
289 static int parse_ra_flags(uint8_t *flags
, struct blob_attr
*attr
)
291 struct blob_attr
*cur
;
294 blobmsg_for_each_attr(cur
, attr
, rem
) {
297 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
300 if (!blobmsg_check_attr(cur
, false))
303 for (i
= 0; ra_flags
[i
].name
; i
++) {
304 if (!strcmp(ra_flags
[i
].name
, blobmsg_get_string(cur
))) {
305 *flags
|= ra_flags
[i
].flag
;
310 if (!ra_flags
[i
].name
)
317 static void set_config(struct uci_section
*s
)
319 struct blob_attr
*tb
[ODHCPD_ATTR_MAX
], *c
;
321 blob_buf_init(&b
, 0);
322 uci_to_blob(&b
, s
, &odhcpd_attr_list
);
323 blobmsg_parse(odhcpd_attrs
, ODHCPD_ATTR_MAX
, tb
, blob_data(b
.head
), blob_len(b
.head
));
325 if ((c
= tb
[ODHCPD_ATTR_LEGACY
]))
326 config
.legacy
= blobmsg_get_bool(c
);
328 if ((c
= tb
[ODHCPD_ATTR_MAINDHCP
]))
329 config
.main_dhcpv4
= blobmsg_get_bool(c
);
331 if ((c
= tb
[ODHCPD_ATTR_LEASEFILE
])) {
332 free(config
.dhcp_statefile
);
333 config
.dhcp_statefile
= strdup(blobmsg_get_string(c
));
336 if ((c
= tb
[ODHCPD_ATTR_LEASETRIGGER
])) {
337 free(config
.dhcp_cb
);
338 config
.dhcp_cb
= strdup(blobmsg_get_string(c
));
341 if ((c
= tb
[ODHCPD_ATTR_LOGLEVEL
])) {
342 int log_level
= (blobmsg_get_u32(c
) & LOG_PRIMASK
);
344 if (config
.log_level
!= log_level
) {
345 config
.log_level
= log_level
;
346 setlogmask(LOG_UPTO(config
.log_level
));
351 static double parse_leasetime(struct blob_attr
*c
) {
352 char *val
= blobmsg_get_string(c
), *endptr
= NULL
;
353 double time
= strcmp(val
, "infinite") ? strtod(val
, &endptr
) : UINT32_MAX
;
355 if (time
&& endptr
&& endptr
[0]) {
356 if (endptr
[0] == 's')
358 else if (endptr
[0] == 'm')
360 else if (endptr
[0] == 'h')
362 else if (endptr
[0] == 'd')
364 else if (endptr
[0] == 'w')
365 time
*= 7 * 24 * 3600;
379 static void free_lease(struct lease
*l
)
385 static int set_lease(struct uci_section
*s
)
387 struct blob_attr
*tb
[LEASE_ATTR_MAX
], *c
;
392 blob_buf_init(&b
, 0);
393 uci_to_blob(&b
, s
, &lease_attr_list
);
394 blobmsg_parse(lease_attrs
, LEASE_ATTR_MAX
, tb
, blob_data(b
.head
), blob_len(b
.head
));
396 if ((c
= tb
[LEASE_ATTR_DUID
]))
397 duidlen
= (blobmsg_data_len(c
) - 1) / 2;
399 l
= calloc_a(sizeof(*l
), &duid
, duidlen
);
403 if ((c
= tb
[LEASE_ATTR_MAC
]))
404 if (!ether_aton_r(blobmsg_get_string(c
), &l
->mac
))
407 if ((c
= tb
[LEASE_ATTR_DUID
])) {
411 len
= odhcpd_unhexlify(l
->duid
, duidlen
, blobmsg_get_string(c
));
419 if ((c
= tb
[LEASE_ATTR_NAME
])) {
420 l
->hostname
= strdup(blobmsg_get_string(c
));
421 if (!l
->hostname
|| !odhcpd_valid_hostname(l
->hostname
))
425 if ((c
= tb
[LEASE_ATTR_IP
]))
426 if (inet_pton(AF_INET
, blobmsg_get_string(c
), &l
->ipaddr
) < 0)
429 if ((c
= tb
[LEASE_ATTR_HOSTID
])) {
431 l
->hostid
= strtoul(blobmsg_get_string(c
), NULL
, 16);
435 uint32_t i4a
= ntohl(l
->ipaddr
) & 0xff;
436 l
->hostid
= ((i4a
/ 100) << 8) | (((i4a
% 100) / 10) << 4) | (i4a
% 10);
439 if ((c
= tb
[LEASE_ATTR_LEASETIME
])) {
440 double time
= parse_leasetime(c
);
447 INIT_LIST_HEAD(&l
->assignments
);
448 vlist_add(&leases
, &l
->node
, l
);
458 int config_parse_interface(void *data
, size_t len
, const char *name
, bool overwrite
)
460 struct interface
*iface
;
461 struct blob_attr
*tb
[IFACE_ATTR_MAX
], *c
;
462 bool get_addrs
= false;
464 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
, data
, len
);
466 if (tb
[IFACE_ATTR_INTERFACE
])
467 name
= blobmsg_get_string(tb
[IFACE_ATTR_INTERFACE
]);
472 iface
= avl_find_element(&interfaces
, name
, iface
, avl
);
476 iface
= calloc_a(sizeof(*iface
), &new_name
, strlen(name
) + 1);
480 iface
->name
= strcpy(new_name
, name
);
481 iface
->avl
.key
= iface
->name
;
482 iface
->router_event
.uloop
.fd
= -1;
483 iface
->dhcpv6_event
.uloop
.fd
= -1;
484 iface
->ndp_event
.uloop
.fd
= -1;
485 iface
->ndp_ping_fd
= -1;
486 iface
->dhcpv4_event
.uloop
.fd
= -1;
487 INIT_LIST_HEAD(&iface
->ia_assignments
);
488 INIT_LIST_HEAD(&iface
->dhcpv4_assignments
);
489 INIT_LIST_HEAD(&iface
->dhcpv4_fr_ips
);
491 set_interface_defaults(iface
);
493 avl_insert(&interfaces
, &iface
->avl
);
494 get_addrs
= overwrite
= true;
497 const char *ifname
= NULL
;
499 if ((c
= tb
[IFACE_ATTR_IFNAME
]))
500 ifname
= blobmsg_get_string(c
);
501 else if ((c
= tb
[IFACE_ATTR_NETWORKID
]))
502 ifname
= blobmsg_get_string(c
);
506 if (overwrite
|| !iface
->ifname
)
507 ifname
= ubus_get_ifname(name
);
510 if (!iface
->ifname
&& !ifname
)
515 iface
->ifname
= strdup(ifname
);
520 if (!iface
->ifindex
&&
521 (iface
->ifindex
= if_nametoindex(iface
->ifname
)) <= 0)
526 ssize_t len
= netlink_get_interface_addrs(iface
->ifindex
,
527 true, &iface
->addr6
);
530 iface
->addr6_len
= len
;
532 len
= netlink_get_interface_addrs(iface
->ifindex
,
533 false, &iface
->addr4
);
535 iface
->addr4_len
= len
;
540 if ((c
= tb
[IFACE_ATTR_DYNAMICDHCP
]))
541 iface
->no_dynamic_dhcp
= !blobmsg_get_bool(c
);
543 if ((c
= tb
[IFACE_ATTR_LEASETIME
])) {
544 double time
= parse_leasetime(c
);
548 iface
->dhcpv4_leasetime
= time
;
551 if ((c
= tb
[IFACE_ATTR_START
])) {
552 iface
->dhcpv4_start
.s_addr
= htonl(blobmsg_get_u32(c
));
553 iface
->dhcpv4_end
.s_addr
= htonl(ntohl(iface
->dhcpv4_start
.s_addr
) +
556 if (config
.main_dhcpv4
&& config
.legacy
)
557 iface
->dhcpv4
= MODE_SERVER
;
560 if ((c
= tb
[IFACE_ATTR_LIMIT
]))
561 iface
->dhcpv4_end
.s_addr
= htonl(ntohl(iface
->dhcpv4_start
.s_addr
) +
562 blobmsg_get_u32(c
) - 1);
564 if ((c
= tb
[IFACE_ATTR_MASTER
]))
565 iface
->master
= blobmsg_get_bool(c
);
567 if (overwrite
&& (c
= tb
[IFACE_ATTR_UPSTREAM
])) {
568 struct blob_attr
*cur
;
571 blobmsg_for_each_attr(cur
, c
, rem
) {
572 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, false))
575 iface
->upstream
= realloc(iface
->upstream
,
576 iface
->upstream_len
+ blobmsg_data_len(cur
));
577 if (!iface
->upstream
)
580 memcpy(iface
->upstream
+ iface
->upstream_len
, blobmsg_get_string(cur
), blobmsg_data_len(cur
));
581 iface
->upstream_len
+= blobmsg_data_len(cur
);
586 if ((c
= tb
[IFACE_ATTR_RA
])) {
587 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0) {
590 if (iface
->ra
!= MODE_DISABLED
)
591 iface
->ignore
= false;
596 if ((c
= tb
[IFACE_ATTR_DHCPV4
])) {
597 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0) {
598 if (config
.main_dhcpv4
) {
599 iface
->dhcpv4
= mode
;
601 if (iface
->dhcpv4
!= MODE_DISABLED
)
602 iface
->ignore
= false;
609 if ((c
= tb
[IFACE_ATTR_DHCPV6
])) {
610 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0) {
611 iface
->dhcpv6
= mode
;
613 if (iface
->dhcpv6
!= MODE_DISABLED
)
614 iface
->ignore
= false;
619 if ((c
= tb
[IFACE_ATTR_NDP
])) {
620 if ((mode
= parse_mode(blobmsg_get_string(c
))) >= 0) {
623 if (iface
->ndp
!= MODE_DISABLED
)
624 iface
->ignore
= false;
629 if ((c
= tb
[IFACE_ATTR_ROUTER
])) {
630 struct blob_attr
*cur
;
633 blobmsg_for_each_attr(cur
, c
, rem
) {
634 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, false))
637 struct in_addr addr4
;
638 if (inet_pton(AF_INET
, blobmsg_get_string(cur
), &addr4
) == 1) {
639 iface
->dhcpv4_router
= realloc(iface
->dhcpv4_router
,
640 (++iface
->dhcpv4_router_cnt
) * sizeof(*iface
->dhcpv4_router
));
641 if (!iface
->dhcpv4_router
)
644 iface
->dhcpv4_router
[iface
->dhcpv4_router_cnt
- 1] = addr4
;
650 if ((c
= tb
[IFACE_ATTR_DNS
])) {
651 struct blob_attr
*cur
;
654 iface
->always_rewrite_dns
= true;
655 blobmsg_for_each_attr(cur
, c
, rem
) {
656 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, false))
659 struct in_addr addr4
;
660 struct in6_addr addr6
;
661 if (inet_pton(AF_INET
, blobmsg_get_string(cur
), &addr4
) == 1) {
662 if (addr4
.s_addr
== INADDR_ANY
)
665 iface
->dhcpv4_dns
= realloc(iface
->dhcpv4_dns
,
666 (++iface
->dhcpv4_dns_cnt
) * sizeof(*iface
->dhcpv4_dns
));
667 if (!iface
->dhcpv4_dns
)
670 iface
->dhcpv4_dns
[iface
->dhcpv4_dns_cnt
- 1] = addr4
;
671 } else if (inet_pton(AF_INET6
, blobmsg_get_string(cur
), &addr6
) == 1) {
672 if (IN6_IS_ADDR_UNSPECIFIED(&addr6
))
675 iface
->dns
= realloc(iface
->dns
,
676 (++iface
->dns_cnt
) * sizeof(*iface
->dns
));
680 iface
->dns
[iface
->dns_cnt
- 1] = addr6
;
686 if ((c
= tb
[IFACE_ATTR_DOMAIN
])) {
687 struct blob_attr
*cur
;
690 blobmsg_for_each_attr(cur
, c
, rem
) {
691 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
|| !blobmsg_check_attr(cur
, false))
695 char *domain
= blobmsg_get_string(cur
);
696 size_t domainlen
= strlen(domain
);
697 if (domainlen
> 0 && domain
[domainlen
- 1] == '.')
698 domain
[domainlen
- 1] = 0;
700 int len
= dn_comp(domain
, buf
, sizeof(buf
), NULL
, NULL
);
704 iface
->search
= realloc(iface
->search
, iface
->search_len
+ len
);
708 memcpy(&iface
->search
[iface
->search_len
], buf
, len
);
709 iface
->search_len
+= len
;
713 if ((c
= tb
[IFACE_ATTR_FILTER_CLASS
])) {
714 iface
->filter_class
= realloc(iface
->filter_class
, blobmsg_data_len(c
) + 1);
715 memcpy(iface
->filter_class
, blobmsg_get_string(c
), blobmsg_data_len(c
) + 1);
718 if ((c
= tb
[IFACE_ATTR_DHCPV4_FORCERECONF
]))
719 iface
->dhcpv4_forcereconf
= blobmsg_get_bool(c
);
721 if ((c
= tb
[IFACE_ATTR_DHCPV6_RAW
])) {
722 iface
->dhcpv6_raw_len
= blobmsg_data_len(c
) / 2;
723 iface
->dhcpv6_raw
= realloc(iface
->dhcpv6_raw
, iface
->dhcpv6_raw_len
);
724 odhcpd_unhexlify(iface
->dhcpv6_raw
, iface
->dhcpv6_raw_len
, blobmsg_get_string(c
));
727 if ((c
= tb
[IFACE_ATTR_DHCPV6_ASSIGNALL
]))
728 iface
->dhcpv6_assignall
= blobmsg_get_bool(c
);
730 if ((c
= tb
[IFACE_ATTR_DHCPV6_PD
]))
731 iface
->dhcpv6_pd
= blobmsg_get_bool(c
);
733 if ((c
= tb
[IFACE_ATTR_DHCPV6_NA
]))
734 iface
->dhcpv6_na
= blobmsg_get_bool(c
);
736 if ((c
= tb
[IFACE_ATTR_RA_DEFAULT
]))
737 iface
->default_router
= blobmsg_get_u32(c
);
739 if (!tb
[IFACE_ATTR_RA_FLAGS
] && !tb
[IFACE_ATTR_RA_SLAAC
] &&
740 (c
= tb
[IFACE_ATTR_RA_MANAGEMENT
])) {
741 switch (blobmsg_get_u32(c
)) {
743 iface
->ra_flags
= ND_RA_FLAG_OTHER
;
744 iface
->ra_slaac
= true;
747 iface
->ra_flags
= ND_RA_FLAG_OTHER
|ND_RA_FLAG_MANAGED
;
748 iface
->ra_slaac
= true;
751 iface
->ra_flags
= ND_RA_FLAG_OTHER
|ND_RA_FLAG_MANAGED
;
752 iface
->ra_slaac
= false;
759 if ((c
= tb
[IFACE_ATTR_RA_FLAGS
])) {
761 if (parse_ra_flags(&iface
->ra_flags
, c
) < 0)
765 if ((c
= tb
[IFACE_ATTR_RA_REACHABLETIME
])) {
766 uint32_t ra_reachabletime
= blobmsg_get_u32(c
);
767 if (ra_reachabletime
> 3600000)
770 iface
->ra_reachabletime
= ra_reachabletime
;
773 if ((c
= tb
[IFACE_ATTR_RA_RETRANSTIME
])) {
774 uint32_t ra_retranstime
= blobmsg_get_u32(c
);
775 if (ra_retranstime
> 60000)
778 iface
->ra_retranstime
= ra_retranstime
;
781 if ((c
= tb
[IFACE_ATTR_RA_HOPLIMIT
])) {
782 uint32_t ra_hoplimit
= blobmsg_get_u32(c
);
783 if (ra_hoplimit
> 255)
786 iface
->ra_hoplimit
= ra_hoplimit
;
789 if ((c
= tb
[IFACE_ATTR_RA_MTU
])) {
790 uint32_t ra_mtu
= blobmsg_get_u32(c
);
791 if (ra_mtu
< 1280 || ra_mtu
> 65535)
794 iface
->ra_mtu
= ra_mtu
;
797 if ((c
= tb
[IFACE_ATTR_RA_SLAAC
]))
798 iface
->ra_slaac
= blobmsg_get_bool(c
);
800 if ((c
= tb
[IFACE_ATTR_RA_OFFLINK
]))
801 iface
->ra_not_onlink
= blobmsg_get_bool(c
);
803 if ((c
= tb
[IFACE_ATTR_RA_ADVROUTER
]))
804 iface
->ra_advrouter
= blobmsg_get_bool(c
);
806 if ((c
= tb
[IFACE_ATTR_RA_MININTERVAL
]))
807 iface
->ra_mininterval
= blobmsg_get_u32(c
);
809 if ((c
= tb
[IFACE_ATTR_RA_MAXINTERVAL
]))
810 iface
->ra_maxinterval
= blobmsg_get_u32(c
);
812 if ((c
= tb
[IFACE_ATTR_RA_LIFETIME
]))
813 iface
->ra_lifetime
= blobmsg_get_u32(c
);
815 if ((c
= tb
[IFACE_ATTR_RA_USELEASETIME
]))
816 iface
->ra_useleasetime
= blobmsg_get_bool(c
);
818 if ((c
= tb
[IFACE_ATTR_RA_DNS
]))
819 iface
->ra_dns
= blobmsg_get_bool(c
);
821 if ((c
= tb
[IFACE_ATTR_RA_PREFERENCE
])) {
822 const char *prio
= blobmsg_get_string(c
);
824 if (!strcmp(prio
, "high"))
825 iface
->route_preference
= 1;
826 else if (!strcmp(prio
, "low"))
827 iface
->route_preference
= -1;
828 else if (!strcmp(prio
, "medium") || !strcmp(prio
, "default"))
829 iface
->route_preference
= 0;
834 if ((c
= tb
[IFACE_ATTR_PD_MANAGER
]))
835 strncpy(iface
->dhcpv6_pd_manager
, blobmsg_get_string(c
),
836 sizeof(iface
->dhcpv6_pd_manager
) - 1);
838 if ((c
= tb
[IFACE_ATTR_PD_CER
]) &&
839 inet_pton(AF_INET6
, blobmsg_get_string(c
), &iface
->dhcpv6_pd_cer
) < 1)
842 if ((c
= tb
[IFACE_ATTR_NDPROXY_ROUTING
]))
843 iface
->learn_routes
= blobmsg_get_bool(c
);
845 if ((c
= tb
[IFACE_ATTR_NDPROXY_SLAVE
]))
846 iface
->external
= blobmsg_get_bool(c
);
848 if ((c
= tb
[IFACE_ATTR_PREFIX_FILTER
])) {
849 const char *str
= blobmsg_get_string(c
);
850 char *astr
= malloc(strlen(str
) + 1);
854 if (!astr
|| !strcpy(astr
, str
) ||
855 (delim
= strchr(astr
, '/')) == NULL
|| (*(delim
++) = 0) ||
856 sscanf(delim
, "%i", &l
) == 0 || l
> 128 ||
857 inet_pton(AF_INET6
, astr
, &iface
->pio_filter_addr
) == 0)
858 iface
->pio_filter_length
= 0;
860 iface
->pio_filter_length
= l
;
869 close_interface(iface
);
873 static int set_interface(struct uci_section
*s
)
875 blob_buf_init(&b
, 0);
876 uci_to_blob(&b
, s
, &interface_attr_list
);
878 return config_parse_interface(blob_data(b
.head
), blob_len(b
.head
), s
->e
.name
, true);
881 static void lease_delete_assignments(struct lease
*l
, bool v6
)
883 struct dhcp_assignment
*a
, *tmp
;
884 unsigned int flag
= v6
? OAF_DHCPV6
: OAF_DHCPV4
;
886 list_for_each_entry_safe(a
, tmp
, &l
->assignments
, lease_list
) {
892 static void lease_update_assignments(struct lease
*l
)
894 struct dhcp_assignment
*a
;
896 list_for_each_entry(a
, &l
->assignments
, lease_list
) {
902 a
->hostname
= strdup(l
->hostname
);
904 a
->leasetime
= l
->leasetime
;
908 static int lease_cmp(const void *k1
, const void *k2
, _unused
void *ptr
)
910 const struct lease
*l1
= k1
, *l2
= k2
;
913 if (l1
->duid_len
!= l2
->duid_len
)
914 return l1
->duid_len
- l2
->duid_len
;
916 if (l1
->duid_len
&& l2
->duid_len
)
917 cmp
= memcmp(l1
->duid
, l2
->duid
, l1
->duid_len
);
922 return memcmp(l1
->mac
.ether_addr_octet
, l2
->mac
.ether_addr_octet
,
923 sizeof(l1
->mac
.ether_addr_octet
));
926 static void lease_change_config(struct lease
*l_old
, struct lease
*l_new
)
930 if ((!!l_new
->hostname
!= !!l_old
->hostname
) ||
931 (l_new
->hostname
&& strcmp(l_new
->hostname
, l_old
->hostname
))) {
932 free(l_old
->hostname
);
933 l_old
->hostname
= NULL
;
936 l_old
->hostname
= strdup(l_new
->hostname
);
941 if (l_old
->leasetime
!= l_new
->leasetime
) {
942 l_old
->leasetime
= l_new
->leasetime
;
946 if (l_old
->ipaddr
!= l_new
->ipaddr
) {
947 l_old
->ipaddr
= l_new
->ipaddr
;
948 lease_delete_assignments(l_old
, false);
951 if (l_old
->hostid
!= l_new
->hostid
) {
952 l_old
->hostid
= l_new
->hostid
;
953 lease_delete_assignments(l_old
, true);
957 lease_update_assignments(l_old
);
962 static void lease_delete(struct lease
*l
)
964 struct dhcp_assignment
*a
, *tmp
;
966 list_for_each_entry_safe(a
, tmp
, &l
->assignments
, lease_list
)
972 static void lease_update(_unused
struct vlist_tree
*tree
, struct vlist_node
*node_new
,
973 struct vlist_node
*node_old
)
975 struct lease
*lease_new
= container_of(node_new
, struct lease
, node
);
976 struct lease
*lease_old
= container_of(node_old
, struct lease
, node
);
978 if (node_old
&& node_new
)
979 lease_change_config(lease_old
, lease_new
);
981 lease_delete(lease_old
);
984 struct lease
*config_find_lease_by_duid(const uint8_t *duid
, const uint16_t len
)
988 vlist_for_each_element(&leases
, l
, node
) {
989 if (l
->duid_len
== len
&& !memcmp(l
->duid
, duid
, len
))
996 struct lease
*config_find_lease_by_mac(const uint8_t *mac
)
1000 vlist_for_each_element(&leases
, l
, node
) {
1001 if (!memcmp(l
->mac
.ether_addr_octet
, mac
,
1002 sizeof(l
->mac
.ether_addr_octet
)))
1009 struct lease
*config_find_lease_by_hostid(const uint32_t hostid
)
1013 vlist_for_each_element(&leases
, l
, node
) {
1014 if (l
->hostid
== hostid
)
1021 struct lease
*config_find_lease_by_ipaddr(const uint32_t ipaddr
)
1025 vlist_for_each_element(&leases
, l
, node
) {
1026 if (l
->ipaddr
== ipaddr
)
1033 void odhcpd_reload(void)
1035 struct uci_context
*uci
= uci_alloc_context();
1036 struct interface
*master
= NULL
, *i
, *tmp
;
1041 vlist_update(&leases
);
1042 avl_for_each_element(&interfaces
, i
, avl
)
1045 struct uci_package
*dhcp
= NULL
;
1046 if (!uci_load(uci
, "dhcp", &dhcp
)) {
1047 struct uci_element
*e
;
1049 /* 1. Global settings */
1050 uci_foreach_element(&dhcp
->sections
, e
) {
1051 struct uci_section
*s
= uci_to_section(e
);
1052 if (!strcmp(s
->type
, "odhcpd"))
1057 uci_foreach_element(&dhcp
->sections
, e
) {
1058 struct uci_section
*s
= uci_to_section(e
);
1059 if (!strcmp(s
->type
, "dhcp"))
1063 /* 3. Static leases */
1064 uci_foreach_element(&dhcp
->sections
, e
) {
1065 struct uci_section
* s
= uci_to_section(e
);
1066 if (!strcmp(s
->type
, "host"))
1071 if (config
.dhcp_statefile
) {
1072 char *path
= strdup(config
.dhcp_statefile
);
1074 mkdir_p(dirname(path
), 0755);
1078 vlist_flush(&leases
);
1081 ubus_apply_network();
1084 bool any_dhcpv6_slave
= false, any_ra_slave
= false, any_ndp_slave
= false;
1087 avl_for_each_element(&interfaces
, i
, avl
) {
1091 if (i
->dhcpv6
== MODE_HYBRID
|| i
->dhcpv6
== MODE_RELAY
)
1092 any_dhcpv6_slave
= true;
1094 if (i
->ra
== MODE_HYBRID
|| i
->ra
== MODE_RELAY
)
1095 any_ra_slave
= true;
1097 if (i
->ndp
== MODE_HYBRID
|| i
->ndp
== MODE_RELAY
)
1098 any_ndp_slave
= true;
1101 /* Evaluate hybrid mode for master */
1102 avl_for_each_element(&interfaces
, i
, avl
) {
1106 enum odhcpd_mode hybrid_mode
= MODE_DISABLED
;
1108 if (!ubus_has_prefix(i
->name
, i
->ifname
))
1109 hybrid_mode
= MODE_RELAY
;
1112 if (i
->dhcpv6
== MODE_HYBRID
)
1113 i
->dhcpv6
= hybrid_mode
;
1115 if (i
->dhcpv6
== MODE_RELAY
&& !any_dhcpv6_slave
)
1116 i
->dhcpv6
= MODE_DISABLED
;
1118 if (i
->ra
== MODE_HYBRID
)
1119 i
->ra
= hybrid_mode
;
1121 if (i
->ra
== MODE_RELAY
&& !any_ra_slave
)
1122 i
->ra
= MODE_DISABLED
;
1124 if (i
->ndp
== MODE_HYBRID
)
1125 i
->ndp
= hybrid_mode
;
1127 if (i
->ndp
== MODE_RELAY
&& !any_ndp_slave
)
1128 i
->ndp
= MODE_DISABLED
;
1130 if (i
->dhcpv6
== MODE_RELAY
|| i
->ra
== MODE_RELAY
|| i
->ndp
== MODE_RELAY
)
1135 avl_for_each_element_safe(&interfaces
, i
, avl
, tmp
) {
1137 /* Resolve hybrid mode */
1138 if (i
->dhcpv6
== MODE_HYBRID
)
1139 i
->dhcpv6
= (master
&& master
->dhcpv6
== MODE_RELAY
) ?
1140 MODE_RELAY
: MODE_SERVER
;
1142 if (i
->ra
== MODE_HYBRID
)
1143 i
->ra
= (master
&& master
->ra
== MODE_RELAY
) ?
1144 MODE_RELAY
: MODE_SERVER
;
1146 if (i
->ndp
== MODE_HYBRID
)
1147 i
->ndp
= (master
&& master
->ndp
== MODE_RELAY
) ?
1148 MODE_RELAY
: MODE_DISABLED
;
1150 router_setup_interface(i
, i
->ra
!= MODE_DISABLED
);
1151 dhcpv6_setup_interface(i
, i
->dhcpv6
!= MODE_DISABLED
);
1152 ndp_setup_interface(i
, i
->ndp
!= MODE_DISABLED
);
1153 #ifdef DHCPV4_SUPPORT
1154 dhcpv4_setup_interface(i
, i
->dhcpv4
!= MODE_DISABLED
);
1160 uci_unload(uci
, dhcp
);
1161 uci_free_context(uci
);
1164 static void handle_signal(int signal
)
1168 if (signal
== SIGHUP
) {
1169 if (write(reload_pipe
[1], b
, sizeof(b
)) < 0) {}
1174 static void reload_cb(struct uloop_fd
*u
, _unused
unsigned int events
)
1177 if (read(u
->fd
, b
, sizeof(b
)) < 0) {}
1182 static struct uloop_fd reload_fd
= { .fd
= -1, .cb
= reload_cb
};
1184 void odhcpd_run(void)
1186 if (pipe2(reload_pipe
, O_NONBLOCK
| O_CLOEXEC
) < 0) {}
1188 reload_fd
.fd
= reload_pipe
[0];
1189 uloop_fd_add(&reload_fd
, ULOOP_READ
);
1191 signal(SIGTERM
, handle_signal
);
1192 signal(SIGINT
, handle_signal
);
1193 signal(SIGHUP
, handle_signal
);