2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
4 * Copyright (C) 2012 Steven Barth <steven@midlink.org>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2
8 * as published by the Free Software Foundation
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
20 #include <arpa/inet.h>
21 #include <netinet/in.h>
25 #include "interface.h"
26 #include "interface-ip.h"
29 static struct avl_tree handlers
;
42 static const struct blobmsg_policy proto_ip_attributes
[__OPT_MAX
] = {
43 [OPT_IPADDR
] = { .name
= "ipaddr", .type
= BLOBMSG_TYPE_ARRAY
},
44 [OPT_IP6ADDR
] = { .name
= "ip6addr", .type
= BLOBMSG_TYPE_ARRAY
},
45 [OPT_NETMASK
] = { .name
= "netmask", .type
= BLOBMSG_TYPE_STRING
},
46 [OPT_BROADCAST
] = { .name
= "broadcast", .type
= BLOBMSG_TYPE_STRING
},
47 [OPT_GATEWAY
] = { .name
= "gateway", .type
= BLOBMSG_TYPE_STRING
},
48 [OPT_IP6GW
] = { .name
= "ip6gw", .type
= BLOBMSG_TYPE_STRING
},
49 [OPT_IP6PREFIX
] = { .name
= "ip6prefix", .type
= BLOBMSG_TYPE_ARRAY
},
52 static const struct uci_blob_param_info proto_ip_attr_info
[__OPT_MAX
] = {
53 [OPT_IPADDR
] = { .type
= BLOBMSG_TYPE_STRING
},
54 [OPT_IP6ADDR
] = { .type
= BLOBMSG_TYPE_STRING
},
55 [OPT_IP6PREFIX
] = { .type
= BLOBMSG_TYPE_STRING
},
58 static const char * const proto_ip_validate
[__OPT_MAX
] = {
59 [OPT_IPADDR
] = "ip4addr",
60 [OPT_IP6ADDR
] = "ip6addr",
61 [OPT_NETMASK
] = "netmask",
62 [OPT_BROADCAST
] = "ipaddr",
63 [OPT_GATEWAY
] = "ip4addr",
64 [OPT_IP6GW
] = "ip6addr",
65 [OPT_IP6PREFIX
] = "ip6addr",
68 const struct uci_blob_param_list proto_ip_attr
= {
69 .n_params
= __OPT_MAX
,
70 .params
= proto_ip_attributes
,
71 .validate
= proto_ip_validate
,
72 .info
= proto_ip_attr_info
,
87 static const struct blobmsg_policy proto_ip_addr
[__ADDR_MAX
] = {
88 [ADDR_IPADDR
] = { .name
= "ipaddr", .type
= BLOBMSG_TYPE_STRING
},
89 [ADDR_MASK
] = { .name
= "mask", .type
= BLOBMSG_TYPE_STRING
},
90 [ADDR_BROADCAST
] = { .name
= "broadcast", .type
= BLOBMSG_TYPE_STRING
},
91 [ADDR_PTP
] = { .name
= "ptp", .type
= BLOBMSG_TYPE_STRING
},
92 [ADDR_PREFERRED
] = { .name
= "preferred", .type
= BLOBMSG_TYPE_INT32
},
93 [ADDR_VALID
] = { .name
= "valid", .type
= BLOBMSG_TYPE_INT32
},
94 [ADDR_OFFLINK
] = { .name
= "offlink", .type
= BLOBMSG_TYPE_BOOL
},
95 [ADDR_CLASS
] = { .name
= "class", .type
= BLOBMSG_TYPE_STRING
},
98 static struct device_addr
*
99 alloc_device_addr(bool v6
, bool ext
)
101 struct device_addr
*addr
;
103 addr
= calloc(1, sizeof(*addr
));
104 addr
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
106 addr
->flags
|= DEVADDR_EXTERNAL
;
112 parse_addr(struct interface
*iface
, const char *str
, bool v6
, int mask
,
113 bool ext
, uint32_t broadcast
)
115 struct device_addr
*addr
;
116 int af
= v6
? AF_INET6
: AF_INET
;
118 addr
= alloc_device_addr(v6
, ext
);
123 if (!parse_ip_and_netmask(af
, str
, &addr
->addr
, &addr
->mask
)) {
124 interface_add_error(iface
, "proto", "INVALID_ADDRESS", &str
, 1);
130 addr
->broadcast
= broadcast
;
132 vlist_add(&iface
->proto_ip
.addr
, &addr
->node
, &addr
->flags
);
137 parse_static_address_option(struct interface
*iface
, struct blob_attr
*attr
,
138 bool v6
, int netmask
, bool ext
, uint32_t broadcast
)
140 struct blob_attr
*cur
;
144 blobmsg_for_each_attr(cur
, attr
, rem
) {
145 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
149 if (!parse_addr(iface
, blobmsg_data(cur
), v6
, netmask
, ext
,
157 static struct device_addr
*
158 parse_address_item(struct blob_attr
*attr
, bool v6
, bool ext
)
160 struct device_addr
*addr
;
161 struct blob_attr
*tb
[__ADDR_MAX
];
162 struct blob_attr
*cur
;
164 if (blobmsg_type(attr
) != BLOBMSG_TYPE_TABLE
)
167 addr
= alloc_device_addr(v6
, ext
);
171 blobmsg_parse(proto_ip_addr
, __ADDR_MAX
, tb
, blobmsg_data(attr
), blobmsg_data_len(attr
));
173 addr
->mask
= v6
? 128 : 32;
174 if ((cur
= tb
[ADDR_MASK
])) {
175 unsigned int new_mask
;
177 new_mask
= parse_netmask_string(blobmsg_data(cur
), v6
);
178 if (new_mask
> addr
->mask
)
181 addr
->mask
= new_mask
;
184 cur
= tb
[ADDR_IPADDR
];
188 if (!inet_pton(v6
? AF_INET6
: AF_INET
, blobmsg_data(cur
), &addr
->addr
))
191 if ((cur
= tb
[ADDR_OFFLINK
]) && blobmsg_get_bool(cur
))
192 addr
->flags
|= DEVADDR_OFFLINK
;
195 if ((cur
= tb
[ADDR_BROADCAST
]) &&
196 !inet_pton(AF_INET
, blobmsg_data(cur
), &addr
->broadcast
))
198 if ((cur
= tb
[ADDR_PTP
]) &&
199 !inet_pton(AF_INET
, blobmsg_data(cur
), &addr
->point_to_point
))
202 time_t now
= system_get_rtime();
203 if ((cur
= tb
[ADDR_PREFERRED
])) {
204 int64_t preferred
= blobmsg_get_u32(cur
);
205 int64_t preferred_until
= preferred
+ (int64_t)now
;
206 if (preferred_until
<= LONG_MAX
&& preferred
!= 0xffffffffLL
)
207 addr
->preferred_until
= preferred_until
;
210 if ((cur
= tb
[ADDR_VALID
])) {
211 int64_t valid
= blobmsg_get_u32(cur
);
212 int64_t valid_until
= valid
+ (int64_t)now
;
213 if (valid_until
<= LONG_MAX
&& valid
!= 0xffffffffLL
)
214 addr
->valid_until
= valid_until
;
218 if (addr
->valid_until
) {
219 if (!addr
->preferred_until
)
220 addr
->preferred_until
= addr
->valid_until
;
221 else if (addr
->preferred_until
> addr
->valid_until
)
225 if ((cur
= tb
[ADDR_CLASS
]))
226 addr
->pclass
= strdup(blobmsg_get_string(cur
));
237 parse_address_list(struct interface
*iface
, struct blob_attr
*attr
, bool v6
,
240 struct device_addr
*addr
;
241 struct blob_attr
*cur
;
245 blobmsg_for_each_attr(cur
, attr
, rem
) {
246 addr
= parse_address_item(cur
, v6
, ext
);
251 vlist_add(&iface
->proto_ip
.addr
, &addr
->node
, &addr
->flags
);
258 parse_gateway_option(struct interface
*iface
, struct blob_attr
*attr
, bool v6
)
260 struct device_route
*route
;
261 const char *str
= blobmsg_data(attr
);
262 int af
= v6
? AF_INET6
: AF_INET
;
264 route
= calloc(1, sizeof(*route
));
265 if (!inet_pton(af
, str
, &route
->nexthop
)) {
266 interface_add_error(iface
, "proto", "INVALID_GATEWAY", &str
, 1);
272 route
->flags
= (v6
? DEVADDR_INET6
: DEVADDR_INET4
);
273 route
->metric
= iface
->metric
;
275 unsigned int table
= (v6
) ? iface
->ip6table
: iface
->ip4table
;
277 route
->table
= table
;
278 route
->flags
|= DEVROUTE_SRCTABLE
;
281 vlist_add(&iface
->proto_ip
.route
, &route
->node
, route
);
287 parse_prefix_option(struct interface
*iface
, const char *str
, size_t len
)
289 char buf
[128] = {0}, *saveptr
;
290 if (len
> sizeof(buf
))
293 memcpy(buf
, str
, len
);
294 char *addrstr
= strtok_r(buf
, "/", &saveptr
);
298 char *lengthstr
= strtok_r(NULL
, ",", &saveptr
);
302 char *prefstr
= strtok_r(NULL
, ",", &saveptr
);
303 char *validstr
= (!prefstr
) ? NULL
: strtok_r(NULL
, ",", &saveptr
);
304 char *addstr
= (!validstr
) ? NULL
: strtok_r(NULL
, ",", &saveptr
);
305 const char *pclass
= NULL
;
307 int64_t pref
= (!prefstr
) ? 0 : strtoul(prefstr
, NULL
, 10);
308 int64_t valid
= (!validstr
) ? 0 : strtoul(validstr
, NULL
, 10);
310 uint8_t length
= strtoul(lengthstr
, NULL
, 10), excl_length
= 0;
311 if (length
< 1 || length
> 64)
314 struct in6_addr addr
, excluded
, *excludedp
= NULL
;
315 if (inet_pton(AF_INET6
, addrstr
, &addr
) < 1)
318 for (; addstr
; addstr
= strtok_r(NULL
, ",", &saveptr
)) {
319 char *key
= NULL
, *val
= NULL
, *addsaveptr
;
320 if (!(key
= strtok_r(addstr
, "=", &addsaveptr
)) ||
321 !(val
= strtok_r(NULL
, ",", &addsaveptr
)))
324 if (!strcmp(key
, "excluded")) {
325 char *sep
= strchr(val
, '/');
330 excl_length
= atoi(sep
+ 1);
332 if (inet_pton(AF_INET6
, val
, &excluded
) < 1)
335 excludedp
= &excluded
;
336 } else if (!strcmp(key
, "class")) {
345 int64_t now
= system_get_rtime();
346 time_t preferred_until
= 0;
347 if (prefstr
&& pref
!= 0xffffffffLL
&& pref
+ now
<= LONG_MAX
)
348 preferred_until
= pref
+ now
;
350 time_t valid_until
= 0;
351 if (validstr
&& valid
!= 0xffffffffLL
&& valid
+ now
<= LONG_MAX
)
352 valid_until
= valid
+ now
;
354 interface_ip_add_device_prefix(iface
, &addr
, length
,
355 valid_until
, preferred_until
,
356 excludedp
, excl_length
, pclass
);
361 parse_prefix_list(struct interface
*iface
, struct blob_attr
*attr
)
363 struct blob_attr
*cur
;
367 blobmsg_for_each_attr(cur
, attr
, rem
) {
368 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
372 if (!parse_prefix_option(iface
, blobmsg_data(cur
),
373 blobmsg_data_len(cur
)))
381 proto_apply_static_ip_settings(struct interface
*iface
, struct blob_attr
*attr
)
383 struct blob_attr
*tb
[__OPT_MAX
];
384 struct blob_attr
*cur
;
386 unsigned int netmask
= 32;
387 int n_v4
= 0, n_v6
= 0;
388 struct in_addr bcast
= {};
390 blobmsg_parse(proto_ip_attributes
, __OPT_MAX
, tb
, blob_data(attr
), blob_len(attr
));
392 if ((cur
= tb
[OPT_NETMASK
])) {
393 netmask
= parse_netmask_string(blobmsg_data(cur
), false);
395 error
= "INVALID_NETMASK";
400 if ((cur
= tb
[OPT_BROADCAST
])) {
401 if (!inet_pton(AF_INET
, blobmsg_data(cur
), &bcast
)) {
402 error
= "INVALID_BROADCAST";
407 if ((cur
= tb
[OPT_IPADDR
]))
408 n_v4
= parse_static_address_option(iface
, cur
, false,
409 netmask
, false, bcast
.s_addr
);
411 if ((cur
= tb
[OPT_IP6ADDR
]))
412 n_v6
= parse_static_address_option(iface
, cur
, true,
415 if ((cur
= tb
[OPT_IP6PREFIX
]))
416 if (parse_prefix_list(iface
, cur
) < 0)
419 if (n_v4
< 0 || n_v6
< 0)
422 if ((cur
= tb
[OPT_GATEWAY
])) {
423 if (n_v4
&& !parse_gateway_option(iface
, cur
, false))
427 if ((cur
= tb
[OPT_IP6GW
])) {
428 if (n_v6
&& !parse_gateway_option(iface
, cur
, true))
435 interface_add_error(iface
, "proto", error
, NULL
, 0);
441 proto_apply_ip_settings(struct interface
*iface
, struct blob_attr
*attr
, bool ext
)
443 struct blob_attr
*tb
[__OPT_MAX
];
444 struct blob_attr
*cur
;
445 int n_v4
= 0, n_v6
= 0;
447 blobmsg_parse(proto_ip_attributes
, __OPT_MAX
, tb
, blob_data(attr
), blob_len(attr
));
449 if ((cur
= tb
[OPT_IPADDR
]))
450 n_v4
= parse_address_list(iface
, cur
, false, ext
);
452 if ((cur
= tb
[OPT_IP6ADDR
]))
453 n_v6
= parse_address_list(iface
, cur
, true, ext
);
455 if ((cur
= tb
[OPT_IP6PREFIX
]))
456 if (parse_prefix_list(iface
, cur
) < 0)
459 if (n_v4
< 0 || n_v6
< 0)
462 if ((cur
= tb
[OPT_GATEWAY
])) {
463 if (n_v4
&& !parse_gateway_option(iface
, cur
, false))
467 if ((cur
= tb
[OPT_IP6GW
])) {
468 if (n_v6
&& !parse_gateway_option(iface
, cur
, true))
478 void add_proto_handler(struct proto_handler
*p
)
481 avl_init(&handlers
, avl_strcmp
, false, NULL
);
486 p
->avl
.key
= p
->name
;
487 avl_insert(&handlers
, &p
->avl
);
491 default_proto_free(struct interface_proto_state
*proto
)
497 invalid_proto_handler(struct interface_proto_state
*proto
,
498 enum interface_proto_cmd cmd
, bool force
)
504 no_proto_handler(struct interface_proto_state
*proto
,
505 enum interface_proto_cmd cmd
, bool force
)
510 static struct interface_proto_state
*
511 default_proto_attach(const struct proto_handler
*h
,
512 struct interface
*iface
, struct blob_attr
*attr
)
514 struct interface_proto_state
*proto
;
516 proto
= calloc(1, sizeof(*proto
));
517 proto
->free
= default_proto_free
;
518 proto
->cb
= no_proto_handler
;
523 static const struct proto_handler no_proto
= {
525 .flags
= PROTO_FLAG_IMMEDIATE
,
526 .attach
= default_proto_attach
,
529 static const struct proto_handler
*
530 get_proto_handler(const char *name
)
532 struct proto_handler
*proto
;
534 if (!strcmp(name
, "none"))
540 return avl_find_element(&handlers
, name
, proto
, avl
);
544 proto_dump_handlers(struct blob_buf
*b
)
546 struct proto_handler
*p
;
549 avl_for_each_element(&handlers
, p
, avl
) {
552 c
= blobmsg_open_table(b
, p
->name
);
553 if (p
->config_params
->validate
) {
556 v
= blobmsg_open_table(b
, "validate");
557 for (i
= 0; i
< p
->config_params
->n_params
; i
++)
558 blobmsg_add_string(b
, p
->config_params
->params
[i
].name
, uci_get_validate_string(p
->config_params
, i
));
559 blobmsg_close_table(b
, v
);
561 blobmsg_add_u8(b
, "no_device", !!(p
->flags
& PROTO_FLAG_NODEV
));
562 blobmsg_close_table(b
, c
);
567 proto_init_interface(struct interface
*iface
, struct blob_attr
*attr
)
569 const struct proto_handler
*proto
= iface
->proto_handler
;
570 struct interface_proto_state
*state
= NULL
;
575 state
= proto
->attach(proto
, iface
, attr
);
577 state
= no_proto
.attach(&no_proto
, iface
, attr
);
578 state
->cb
= invalid_proto_handler
;
581 state
->handler
= proto
;
582 interface_set_proto_state(iface
, state
);
586 proto_attach_interface(struct interface
*iface
, const char *proto_name
)
588 const struct proto_handler
*proto
= &no_proto
;
591 proto
= get_proto_handler(proto_name
);
593 interface_add_error(iface
, "proto", "INVALID_PROTO", NULL
, 0);
598 iface
->proto_handler
= proto
;
602 interface_proto_event(struct interface_proto_state
*proto
,
603 enum interface_proto_cmd cmd
, bool force
)
605 enum interface_proto_event ev
;
608 ret
= proto
->cb(proto
, cmd
, force
);
609 if (ret
|| !(proto
->handler
->flags
& PROTO_FLAG_IMMEDIATE
))
613 case PROTO_CMD_SETUP
:
616 case PROTO_CMD_TEARDOWN
:
619 case PROTO_CMD_RENEW
:
625 proto
->proto_event(proto
, ev
);