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
));
107 addr
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
109 addr
->flags
|= DEVADDR_EXTERNAL
;
115 parse_addr(struct interface
*iface
, const char *str
, bool v6
, int mask
,
116 bool ext
, uint32_t broadcast
)
118 struct device_addr
*addr
;
119 int af
= v6
? AF_INET6
: AF_INET
;
121 addr
= alloc_device_addr(v6
, ext
);
126 if (!parse_ip_and_netmask(af
, str
, &addr
->addr
, &addr
->mask
))
130 if (IN_EXPERIMENTAL(ntohl(addr
->addr
.in
.s_addr
)))
133 } else if (IN6_IS_ADDR_MULTICAST(&addr
->addr
.in6
))
137 addr
->broadcast
= broadcast
;
139 vlist_add(&iface
->proto_ip
.addr
, &addr
->node
, &addr
->flags
);
143 interface_add_error(iface
, "proto", "INVALID_ADDRESS", &str
, 1);
150 parse_static_address_option(struct interface
*iface
, struct blob_attr
*attr
,
151 bool v6
, int netmask
, bool ext
, uint32_t broadcast
)
153 struct blob_attr
*cur
;
157 blobmsg_for_each_attr(cur
, attr
, rem
) {
158 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
162 if (!parse_addr(iface
, blobmsg_data(cur
), v6
, netmask
, ext
,
170 static struct device_addr
*
171 parse_address_item(struct blob_attr
*attr
, bool v6
, bool ext
)
173 struct device_addr
*addr
;
174 struct blob_attr
*tb
[__ADDR_MAX
];
175 struct blob_attr
*cur
;
177 if (blobmsg_type(attr
) != BLOBMSG_TYPE_TABLE
)
180 addr
= alloc_device_addr(v6
, ext
);
184 blobmsg_parse(proto_ip_addr
, __ADDR_MAX
, tb
, blobmsg_data(attr
), blobmsg_data_len(attr
));
186 addr
->mask
= v6
? 128 : 32;
187 if ((cur
= tb
[ADDR_MASK
])) {
188 unsigned int new_mask
;
190 new_mask
= parse_netmask_string(blobmsg_data(cur
), v6
);
191 if (new_mask
> addr
->mask
)
194 addr
->mask
= new_mask
;
197 cur
= tb
[ADDR_IPADDR
];
201 if (!inet_pton(v6
? AF_INET6
: AF_INET
, blobmsg_data(cur
), &addr
->addr
))
204 if ((cur
= tb
[ADDR_OFFLINK
]) && blobmsg_get_bool(cur
))
205 addr
->flags
|= DEVADDR_OFFLINK
;
208 if ((cur
= tb
[ADDR_BROADCAST
]) &&
209 !inet_pton(AF_INET
, blobmsg_data(cur
), &addr
->broadcast
))
211 if ((cur
= tb
[ADDR_PTP
]) &&
212 !inet_pton(AF_INET
, blobmsg_data(cur
), &addr
->point_to_point
))
215 time_t now
= system_get_rtime();
216 if ((cur
= tb
[ADDR_PREFERRED
])) {
217 int64_t preferred
= blobmsg_get_u32(cur
);
218 int64_t preferred_until
= preferred
+ (int64_t)now
;
219 if (preferred_until
<= LONG_MAX
&& preferred
!= 0xffffffffLL
)
220 addr
->preferred_until
= preferred_until
;
223 if ((cur
= tb
[ADDR_VALID
])) {
224 int64_t valid
= blobmsg_get_u32(cur
);
225 int64_t valid_until
= valid
+ (int64_t)now
;
226 if (valid_until
<= LONG_MAX
&& valid
!= 0xffffffffLL
)
227 addr
->valid_until
= valid_until
;
231 if (addr
->valid_until
) {
232 if (!addr
->preferred_until
)
233 addr
->preferred_until
= addr
->valid_until
;
234 else if (addr
->preferred_until
> addr
->valid_until
)
238 if ((cur
= tb
[ADDR_CLASS
]))
239 addr
->pclass
= strdup(blobmsg_get_string(cur
));
250 parse_address_list(struct interface
*iface
, struct blob_attr
*attr
, bool v6
,
253 struct device_addr
*addr
;
254 struct blob_attr
*cur
;
258 blobmsg_for_each_attr(cur
, attr
, rem
) {
259 addr
= parse_address_item(cur
, v6
, ext
);
264 vlist_add(&iface
->proto_ip
.addr
, &addr
->node
, &addr
->flags
);
271 parse_gateway_option(struct interface
*iface
, struct blob_attr
*attr
, bool v6
)
273 struct device_route
*route
;
274 const char *str
= blobmsg_data(attr
);
275 int af
= v6
? AF_INET6
: AF_INET
;
277 route
= calloc(1, sizeof(*route
));
281 if (!inet_pton(af
, str
, &route
->nexthop
)) {
282 interface_add_error(iface
, "proto", "INVALID_GATEWAY", &str
, 1);
288 route
->flags
= (v6
? DEVADDR_INET6
: DEVADDR_INET4
);
289 route
->metric
= iface
->metric
;
291 unsigned int table
= (v6
) ? iface
->ip6table
: iface
->ip4table
;
293 route
->table
= table
;
294 route
->flags
|= DEVROUTE_SRCTABLE
;
297 vlist_add(&iface
->proto_ip
.route
, &route
->node
, route
);
303 parse_prefix_option(struct interface
*iface
, const char *str
, size_t len
)
305 char buf
[128] = {0}, *saveptr
;
306 if (len
>= sizeof(buf
))
309 memcpy(buf
, str
, len
);
310 char *addrstr
= strtok_r(buf
, "/", &saveptr
);
314 char *lengthstr
= strtok_r(NULL
, ",", &saveptr
);
318 char *prefstr
= strtok_r(NULL
, ",", &saveptr
);
319 char *validstr
= (!prefstr
) ? NULL
: strtok_r(NULL
, ",", &saveptr
);
320 char *addstr
= (!validstr
) ? NULL
: strtok_r(NULL
, ",", &saveptr
);
321 const char *pclass
= NULL
;
323 int64_t pref
= (!prefstr
) ? 0 : strtoul(prefstr
, NULL
, 10);
324 int64_t valid
= (!validstr
) ? 0 : strtoul(validstr
, NULL
, 10);
326 uint8_t length
= strtoul(lengthstr
, NULL
, 10), excl_length
= 0;
327 if (length
< 1 || length
> 64)
330 struct in6_addr addr
, excluded
, *excludedp
= NULL
;
331 if (inet_pton(AF_INET6
, addrstr
, &addr
) < 1)
334 for (; addstr
; addstr
= strtok_r(NULL
, ",", &saveptr
)) {
335 char *key
= NULL
, *val
= NULL
, *addsaveptr
;
336 if (!(key
= strtok_r(addstr
, "=", &addsaveptr
)) ||
337 !(val
= strtok_r(NULL
, ",", &addsaveptr
)))
340 if (!strcmp(key
, "excluded")) {
341 char *sep
= strchr(val
, '/');
346 excl_length
= atoi(sep
+ 1);
348 if (inet_pton(AF_INET6
, val
, &excluded
) < 1)
351 excludedp
= &excluded
;
352 } else if (!strcmp(key
, "class")) {
361 int64_t now
= system_get_rtime();
362 time_t preferred_until
= 0;
363 if (prefstr
&& pref
!= 0xffffffffLL
&& pref
+ now
<= LONG_MAX
)
364 preferred_until
= pref
+ now
;
366 time_t valid_until
= 0;
367 if (validstr
&& valid
!= 0xffffffffLL
&& valid
+ now
<= LONG_MAX
)
368 valid_until
= valid
+ now
;
370 interface_ip_add_device_prefix(iface
, &addr
, length
,
371 valid_until
, preferred_until
,
372 excludedp
, excl_length
, pclass
);
377 parse_prefix_list(struct interface
*iface
, struct blob_attr
*attr
)
379 struct blob_attr
*cur
;
383 blobmsg_for_each_attr(cur
, attr
, rem
) {
384 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
388 if (!parse_prefix_option(iface
, blobmsg_data(cur
),
389 blobmsg_data_len(cur
)))
397 proto_apply_static_ip_settings(struct interface
*iface
, struct blob_attr
*attr
)
399 struct blob_attr
*tb
[__OPT_MAX
];
400 struct blob_attr
*cur
;
402 unsigned int netmask
= 32;
403 int n_v4
= 0, n_v6
= 0;
404 struct in_addr bcast
= {};
406 blobmsg_parse(proto_ip_attributes
, __OPT_MAX
, tb
, blob_data(attr
), blob_len(attr
));
408 if ((cur
= tb
[OPT_NETMASK
])) {
409 netmask
= parse_netmask_string(blobmsg_data(cur
), false);
411 error
= "INVALID_NETMASK";
416 if ((cur
= tb
[OPT_BROADCAST
])) {
417 if (!inet_pton(AF_INET
, blobmsg_data(cur
), &bcast
)) {
418 error
= "INVALID_BROADCAST";
423 if ((cur
= tb
[OPT_IPADDR
]))
424 n_v4
= parse_static_address_option(iface
, cur
, false,
425 netmask
, false, bcast
.s_addr
);
427 if ((cur
= tb
[OPT_IP6ADDR
]))
428 n_v6
= parse_static_address_option(iface
, cur
, true,
431 if ((cur
= tb
[OPT_IP6PREFIX
]))
432 if (parse_prefix_list(iface
, cur
) < 0)
435 if (n_v4
< 0 || n_v6
< 0)
438 if ((cur
= tb
[OPT_GATEWAY
])) {
439 if (n_v4
&& !parse_gateway_option(iface
, cur
, false))
443 if ((cur
= tb
[OPT_IP6GW
])) {
444 if (n_v6
&& !parse_gateway_option(iface
, cur
, true))
451 interface_add_error(iface
, "proto", error
, NULL
, 0);
457 proto_apply_ip_settings(struct interface
*iface
, struct blob_attr
*attr
, bool ext
)
459 struct blob_attr
*tb
[__OPT_MAX
];
460 struct blob_attr
*cur
;
461 int n_v4
= 0, n_v6
= 0;
463 blobmsg_parse(proto_ip_attributes
, __OPT_MAX
, tb
, blob_data(attr
), blob_len(attr
));
465 if ((cur
= tb
[OPT_IPADDR
]))
466 n_v4
= parse_address_list(iface
, cur
, false, ext
);
468 if ((cur
= tb
[OPT_IP6ADDR
]))
469 n_v6
= parse_address_list(iface
, cur
, true, ext
);
471 if ((cur
= tb
[OPT_IP6PREFIX
]))
472 if (parse_prefix_list(iface
, cur
) < 0)
475 if (n_v4
< 0 || n_v6
< 0)
478 if ((cur
= tb
[OPT_GATEWAY
])) {
479 if (n_v4
&& !parse_gateway_option(iface
, cur
, false))
483 if ((cur
= tb
[OPT_IP6GW
])) {
484 if (n_v6
&& !parse_gateway_option(iface
, cur
, true))
494 void add_proto_handler(struct proto_handler
*p
)
497 avl_init(&handlers
, avl_strcmp
, false, NULL
);
502 p
->avl
.key
= p
->name
;
503 avl_insert(&handlers
, &p
->avl
);
507 default_proto_free(struct interface_proto_state
*proto
)
513 invalid_proto_handler(struct interface_proto_state
*proto
,
514 enum interface_proto_cmd cmd
, bool force
)
520 no_proto_handler(struct interface_proto_state
*proto
,
521 enum interface_proto_cmd cmd
, bool force
)
526 static struct interface_proto_state
*
527 default_proto_attach(const struct proto_handler
*h
,
528 struct interface
*iface
, struct blob_attr
*attr
)
530 struct interface_proto_state
*proto
;
532 proto
= calloc(1, sizeof(*proto
));
536 proto
->free
= default_proto_free
;
537 proto
->cb
= no_proto_handler
;
542 static const struct proto_handler no_proto
= {
544 .flags
= PROTO_FLAG_IMMEDIATE
,
545 .attach
= default_proto_attach
,
548 static const struct proto_handler
*
549 get_proto_handler(const char *name
)
551 struct proto_handler
*proto
;
553 if (!strcmp(name
, "none"))
559 return avl_find_element(&handlers
, name
, proto
, avl
);
563 proto_dump_handlers(struct blob_buf
*b
)
565 struct proto_handler
*p
;
568 avl_for_each_element(&handlers
, p
, avl
) {
571 c
= blobmsg_open_table(b
, p
->name
);
572 if (p
->config_params
->validate
) {
575 v
= blobmsg_open_table(b
, "validate");
576 for (i
= 0; i
< p
->config_params
->n_params
; i
++)
577 blobmsg_add_string(b
, p
->config_params
->params
[i
].name
, uci_get_validate_string(p
->config_params
, i
));
578 blobmsg_close_table(b
, v
);
580 blobmsg_add_u8(b
, "immediate", !!(p
->flags
& PROTO_FLAG_IMMEDIATE
));
581 blobmsg_add_u8(b
, "no_device", !!(p
->flags
& PROTO_FLAG_NODEV
));
582 blobmsg_add_u8(b
, "init_available", !!(p
->flags
& PROTO_FLAG_INIT_AVAILABLE
));
583 blobmsg_add_u8(b
, "renew_available", !!(p
->flags
& PROTO_FLAG_RENEW_AVAILABLE
));
584 blobmsg_add_u8(b
, "force_link_default", !!(p
->flags
& PROTO_FLAG_FORCE_LINK_DEFAULT
));
585 blobmsg_add_u8(b
, "last_error", !!(p
->flags
& PROTO_FLAG_LASTERROR
));
586 blobmsg_add_u8(b
, "teardown_on_l3_link_down", !!(p
->flags
& PROTO_FLAG_TEARDOWN_ON_L3_LINK_DOWN
));
587 blobmsg_add_u8(b
, "no_task", !!(p
->flags
& PROTO_FLAG_NO_TASK
));
588 blobmsg_close_table(b
, c
);
593 proto_init_interface(struct interface
*iface
, struct blob_attr
*attr
)
595 const struct proto_handler
*proto
= iface
->proto_handler
;
596 struct interface_proto_state
*state
= NULL
;
601 state
= proto
->attach(proto
, iface
, attr
);
603 state
= no_proto
.attach(&no_proto
, iface
, attr
);
604 state
->cb
= invalid_proto_handler
;
607 state
->handler
= proto
;
608 interface_set_proto_state(iface
, state
);
612 proto_attach_interface(struct interface
*iface
, const char *proto_name
)
614 const struct proto_handler
*proto
= &no_proto
;
615 const char *error
= NULL
;
618 proto
= get_proto_handler(proto_name
);
620 error
= "INVALID_PROTO";
625 iface
->proto_handler
= proto
;
628 interface_add_error(iface
, "proto", error
, NULL
, 0);
632 interface_proto_event(struct interface_proto_state
*proto
,
633 enum interface_proto_cmd cmd
, bool force
)
635 enum interface_proto_event ev
;
638 ret
= proto
->cb(proto
, cmd
, force
);
639 if (ret
|| !(proto
->handler
->flags
& PROTO_FLAG_IMMEDIATE
))
643 case PROTO_CMD_SETUP
:
646 case PROTO_CMD_TEARDOWN
:
649 case PROTO_CMD_RENEW
:
655 proto
->proto_event(proto
, ev
);