6 #include <netinet/in.h>
10 #include "interface-ip.h"
13 static struct avl_tree handlers
;
27 static const struct blobmsg_policy proto_ip_attributes
[__OPT_MAX
] = {
28 [OPT_IPADDR
] = { .name
= "ipaddr", .type
= BLOBMSG_TYPE_ARRAY
},
29 [OPT_IP6ADDR
] = { .name
= "ip6addr", .type
= BLOBMSG_TYPE_ARRAY
},
30 [OPT_NETMASK
] = { .name
= "netmask", .type
= BLOBMSG_TYPE_STRING
},
31 [OPT_BROADCAST
] = { .name
= "broadcast", .type
= BLOBMSG_TYPE_STRING
},
32 [OPT_GATEWAY
] = { .name
= "gateway", .type
= BLOBMSG_TYPE_STRING
},
33 [OPT_IP6GW
] = { .name
= "ip6gw", .type
= BLOBMSG_TYPE_STRING
},
34 [OPT_DNS
] = { .name
= "dns", .type
= BLOBMSG_TYPE_ARRAY
},
35 [OPT_DNS_SEARCH
] = { .name
= "dns_search", .type
= BLOBMSG_TYPE_ARRAY
},
38 static const union config_param_info proto_ip_attr_info
[__OPT_MAX
] = {
39 [OPT_IPADDR
] = { .type
= BLOBMSG_TYPE_STRING
},
40 [OPT_IP6ADDR
] = { .type
= BLOBMSG_TYPE_STRING
},
41 [OPT_DNS
] = { .type
= BLOBMSG_TYPE_STRING
},
44 const struct config_param_list proto_ip_attr
= {
45 .n_params
= __OPT_MAX
,
46 .params
= proto_ip_attributes
,
47 .info
= proto_ip_attr_info
,
52 parse_netmask_string(const char *str
, bool v6
)
58 if (!strchr(str
, '.')) {
59 ret
= strtoul(str
, &err
, 0);
69 if (inet_aton(str
, &addr
) != 1)
72 return 32 - fls(~(ntohl(addr
.s_addr
)));
79 split_netmask(char *str
, unsigned int *netmask
, bool v6
)
81 char *delim
= strchr(str
, '/');
86 *netmask
= parse_netmask_string(delim
, v6
);
92 parse_ip_and_netmask(int af
, const char *str
, void *addr
, unsigned int *netmask
)
94 char *astr
= alloca(strlen(str
) + 1);
97 if (!split_netmask(astr
, netmask
, af
== AF_INET6
))
100 if (af
== AF_INET6
) {
108 return inet_pton(af
, astr
, addr
);
111 static struct device_addr
*
112 proto_parse_ip_addr_string(const char *str
, bool v6
, int mask
)
114 struct device_addr
*addr
;
115 int af
= v6
? AF_INET6
: AF_INET
;
117 addr
= calloc(1, sizeof(*addr
));
118 addr
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
120 if (!parse_ip_and_netmask(af
, str
, &addr
->addr
, &addr
->mask
)) {
128 parse_addr(struct interface
*iface
, const char *str
, bool v6
, int mask
,
129 bool ext
, uint32_t broadcast
)
131 struct device_addr
*addr
;
133 addr
= proto_parse_ip_addr_string(str
, v6
, mask
);
135 interface_add_error(iface
, "proto", "INVALID_ADDRESS", &str
, 1);
140 addr
->broadcast
= broadcast
;
143 addr
->flags
|= DEVADDR_EXTERNAL
;
145 vlist_add(&iface
->proto_ip
.addr
, &addr
->node
, &addr
->mask
);
150 parse_address_option(struct interface
*iface
, struct blob_attr
*attr
, bool v6
,
151 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
,
172 parse_gateway_option(struct interface
*iface
, struct blob_attr
*attr
, bool v6
)
174 struct device_route
*route
;
175 const char *str
= blobmsg_data(attr
);
176 int af
= v6
? AF_INET6
: AF_INET
;
178 route
= calloc(1, sizeof(*route
));
179 if (!inet_pton(af
, str
, &route
->nexthop
)) {
180 interface_add_error(iface
, "proto", "INVALID_GATEWAY", &str
, 1);
186 route
->flags
= (v6
? DEVADDR_INET6
: DEVADDR_INET4
);
187 vlist_add(&iface
->proto_ip
.route
, &route
->node
, &route
->mask
);
193 proto_apply_ip_settings(struct interface
*iface
, struct blob_attr
*attr
, bool ext
)
195 struct blob_attr
*tb
[__OPT_MAX
];
196 struct blob_attr
*cur
;
198 unsigned int netmask
= 32;
199 int n_v4
= 0, n_v6
= 0;
200 struct in_addr bcast
= {};
202 blobmsg_parse(proto_ip_attributes
, __OPT_MAX
, tb
, blob_data(attr
), blob_len(attr
));
204 if ((cur
= tb
[OPT_NETMASK
])) {
205 netmask
= parse_netmask_string(blobmsg_data(cur
), false);
207 error
= "INVALID_NETMASK";
212 if ((cur
= tb
[OPT_BROADCAST
])) {
213 if (!inet_pton(AF_INET
, blobmsg_data(cur
), &bcast
)) {
214 error
= "INVALID_BROADCAST";
219 if ((cur
= tb
[OPT_IPADDR
]))
220 n_v4
= parse_address_option(iface
, cur
, false,
221 netmask
, ext
, bcast
.s_addr
);
223 if ((cur
= tb
[OPT_IP6ADDR
]))
224 n_v6
= parse_address_option(iface
, cur
, true,
227 if (!n_v4
&& !n_v6
) {
228 error
= "NO_ADDRESS";
232 if (n_v4
< 0 || n_v6
< 0)
235 if ((cur
= tb
[OPT_GATEWAY
])) {
236 if (n_v4
&& !parse_gateway_option(iface
, cur
, false))
240 if ((cur
= tb
[OPT_IP6GW
])) {
241 if (n_v6
&& !parse_gateway_option(iface
, cur
, true))
245 if ((cur
= tb
[OPT_DNS
]))
246 interface_add_dns_server_list(&iface
->proto_ip
, cur
);
248 if ((cur
= tb
[OPT_DNS_SEARCH
]))
249 interface_add_dns_search_list(&iface
->proto_ip
, cur
);
254 interface_add_error(iface
, "proto", error
, NULL
, 0);
259 void add_proto_handler(struct proto_handler
*p
)
262 avl_init(&handlers
, avl_strcmp
, false, NULL
);
267 p
->avl
.key
= p
->name
;
268 avl_insert(&handlers
, &p
->avl
);
272 default_proto_free(struct interface_proto_state
*proto
)
278 invalid_proto_handler(struct interface_proto_state
*proto
,
279 enum interface_proto_cmd cmd
, bool force
)
285 no_proto_handler(struct interface_proto_state
*proto
,
286 enum interface_proto_cmd cmd
, bool force
)
291 static struct interface_proto_state
*
292 default_proto_attach(const struct proto_handler
*h
,
293 struct interface
*iface
, struct blob_attr
*attr
)
295 struct interface_proto_state
*proto
;
297 proto
= calloc(1, sizeof(*proto
));
298 proto
->free
= default_proto_free
;
299 proto
->cb
= no_proto_handler
;
304 static const struct proto_handler no_proto
= {
306 .flags
= PROTO_FLAG_IMMEDIATE
,
307 .attach
= default_proto_attach
,
310 static const struct proto_handler
*
311 get_proto_handler(const char *name
)
313 struct proto_handler
*proto
;
315 if (!strcmp(name
, "none"))
321 return avl_find_element(&handlers
, name
, proto
, avl
);
325 proto_init_interface(struct interface
*iface
, struct blob_attr
*attr
)
327 const struct proto_handler
*proto
= iface
->proto_handler
;
328 struct interface_proto_state
*state
= NULL
;
333 state
= proto
->attach(proto
, iface
, attr
);
335 state
= no_proto
.attach(&no_proto
, iface
, attr
);
336 state
->cb
= invalid_proto_handler
;
339 state
->handler
= proto
;
340 interface_set_proto_state(iface
, state
);
344 proto_attach_interface(struct interface
*iface
, const char *proto_name
)
346 const struct proto_handler
*proto
= &no_proto
;
349 proto
= get_proto_handler(proto_name
);
351 interface_add_error(iface
, "proto", "INVALID_PROTO", NULL
, 0);
356 iface
->proto_handler
= proto
;
360 interface_proto_event(struct interface_proto_state
*proto
,
361 enum interface_proto_cmd cmd
, bool force
)
363 enum interface_proto_event ev
;
366 ret
= proto
->cb(proto
, cmd
, force
);
367 if (ret
|| !(proto
->handler
->flags
& PROTO_FLAG_IMMEDIATE
))
371 case PROTO_CMD_SETUP
:
374 case PROTO_CMD_TEARDOWN
:
380 proto
->proto_event(proto
, ev
);