6 #include <netinet/in.h>
10 #include "interface-ip.h"
13 static struct avl_tree handlers
;
25 static const struct blobmsg_policy proto_ip_attributes
[__OPT_MAX
] = {
26 [OPT_IPADDR
] = { .name
= "ipaddr", .type
= BLOBMSG_TYPE_ARRAY
},
27 [OPT_IP6ADDR
] = { .name
= "ip6addr", .type
= BLOBMSG_TYPE_ARRAY
},
28 [OPT_NETMASK
] = { .name
= "netmask", .type
= BLOBMSG_TYPE_STRING
},
29 [OPT_GATEWAY
] = { .name
= "gateway", .type
= BLOBMSG_TYPE_STRING
},
30 [OPT_IP6GW
] = { .name
= "ip6gw", .type
= BLOBMSG_TYPE_STRING
},
31 [OPT_DNS
] = { .name
= "dns", .type
= BLOBMSG_TYPE_ARRAY
},
34 static const union config_param_info proto_ip_attr_info
[__OPT_MAX
] = {
35 [OPT_IPADDR
] = { .type
= BLOBMSG_TYPE_STRING
},
36 [OPT_IP6ADDR
] = { .type
= BLOBMSG_TYPE_STRING
},
37 [OPT_DNS
] = { .type
= BLOBMSG_TYPE_STRING
},
40 const struct config_param_list proto_ip_attr
= {
41 .n_params
= __OPT_MAX
,
42 .params
= proto_ip_attributes
,
43 .info
= proto_ip_attr_info
,
48 parse_netmask_string(const char *str
, bool v6
)
54 if (!strchr(str
, '.')) {
55 ret
= strtoul(str
, &err
, 0);
65 if (inet_aton(str
, &addr
) != 1)
68 return 32 - fls(~(ntohl(addr
.s_addr
)));
75 split_netmask(char *str
, unsigned int *netmask
, bool v6
)
77 char *delim
= strchr(str
, '/');
82 *netmask
= parse_netmask_string(delim
, v6
);
88 parse_ip_and_netmask(int af
, const char *str
, void *addr
, unsigned int *netmask
)
90 char *astr
= alloca(strlen(str
) + 1);
93 if (!split_netmask(astr
, netmask
, af
== AF_INET6
))
104 return inet_pton(af
, astr
, addr
);
108 proto_parse_ip_addr_string(const char *str
, bool v6
, int mask
)
110 struct device_addr
*addr
;
111 int af
= v6
? AF_INET6
: AF_INET
;
113 addr
= calloc(1, sizeof(*addr
));
114 addr
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
116 if (!parse_ip_and_netmask(af
, str
, &addr
->addr
, &addr
->mask
)) {
124 parse_addr(struct interface
*iface
, const char *str
, bool v6
, int mask
, bool ext
)
126 struct device_addr
*addr
;
128 addr
= proto_parse_ip_addr_string(str
, v6
, mask
);
130 interface_add_error(iface
, "proto", "INVALID_ADDRESS", &str
, 1);
135 addr
->flags
|= DEVADDR_EXTERNAL
;
137 vlist_add(&iface
->proto_ip
.addr
, &addr
->node
);
142 parse_address_option(struct interface
*iface
, struct blob_attr
*attr
, bool v6
, int netmask
, bool ext
)
144 struct blob_attr
*cur
;
148 blobmsg_for_each_attr(cur
, attr
, rem
) {
149 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
153 if (!parse_addr(iface
, blobmsg_data(cur
), v6
, netmask
, ext
))
162 parse_gateway_option(struct interface
*iface
, struct blob_attr
*attr
, bool v6
)
164 struct device_route
*route
;
165 const char *str
= blobmsg_data(attr
);
166 int af
= v6
? AF_INET6
: AF_INET
;
168 route
= calloc(1, sizeof(*route
));
169 if (!inet_pton(af
, str
, &route
->nexthop
)) {
170 interface_add_error(iface
, "proto", "INVALID_GATEWAY", &str
, 1);
176 route
->flags
= DEVADDR_DEVICE
| (v6
? DEVADDR_INET6
: DEVADDR_INET4
);
177 vlist_add(&iface
->proto_ip
.route
, &route
->node
);
183 proto_apply_ip_settings(struct interface
*iface
, struct blob_attr
*attr
, bool ext
)
185 struct blob_attr
*tb
[__OPT_MAX
];
187 unsigned int netmask
= 32;
188 int n_v4
= 0, n_v6
= 0;
190 blobmsg_parse(proto_ip_attributes
, __OPT_MAX
, tb
, blob_data(attr
), blob_len(attr
));
192 if (tb
[OPT_NETMASK
]) {
193 netmask
= parse_netmask_string(blobmsg_data(tb
[OPT_NETMASK
]), false);
195 error
= "INVALID_NETMASK";
201 n_v4
= parse_address_option(iface
, tb
[OPT_IPADDR
], false, netmask
, ext
);
204 n_v6
= parse_address_option(iface
, tb
[OPT_IP6ADDR
], true, netmask
, ext
);
206 if (!n_v4
&& !n_v6
) {
207 error
= "NO_ADDRESS";
211 if (n_v4
< 0 || n_v6
< 0)
214 if (n_v4
&& tb
[OPT_GATEWAY
]) {
215 if (!parse_gateway_option(iface
, tb
[OPT_GATEWAY
], false))
219 if (n_v6
&& tb
[OPT_IP6GW
]) {
220 if (!parse_gateway_option(iface
, tb
[OPT_IP6GW
], true))
225 interface_add_dns_server_list(&iface
->proto_ip
, tb
[OPT_DNS
]);
230 interface_add_error(iface
, "proto", error
, NULL
, 0);
235 void add_proto_handler(struct proto_handler
*p
)
238 avl_init(&handlers
, avl_strcmp
, false, NULL
);
243 p
->avl
.key
= p
->name
;
244 avl_insert(&handlers
, &p
->avl
);
248 default_proto_free(struct interface_proto_state
*proto
)
254 invalid_proto_handler(struct interface_proto_state
*proto
,
255 enum interface_proto_cmd cmd
, bool force
)
261 no_proto_handler(struct interface_proto_state
*proto
,
262 enum interface_proto_cmd cmd
, bool force
)
267 static struct interface_proto_state
*
268 default_proto_attach(const struct proto_handler
*h
,
269 struct interface
*iface
, struct blob_attr
*attr
)
271 struct interface_proto_state
*proto
;
273 proto
= calloc(1, sizeof(*proto
));
274 proto
->free
= default_proto_free
;
275 proto
->cb
= no_proto_handler
;
280 static const struct proto_handler no_proto
= {
282 .flags
= PROTO_FLAG_IMMEDIATE
,
283 .attach
= default_proto_attach
,
286 static const struct proto_handler
*
287 get_proto_handler(const char *name
)
289 struct proto_handler
*proto
;
291 if (!strcmp(name
, "none"))
297 return avl_find_element(&handlers
, name
, proto
, avl
);
301 proto_init_interface(struct interface
*iface
, struct blob_attr
*attr
)
303 const struct proto_handler
*proto
= iface
->proto_handler
;
304 struct interface_proto_state
*state
= NULL
;
309 state
= proto
->attach(proto
, iface
, attr
);
311 state
= no_proto
.attach(&no_proto
, iface
, attr
);
312 state
->cb
= invalid_proto_handler
;
315 state
->handler
= proto
;
316 interface_set_proto_state(iface
, state
);
320 proto_attach_interface(struct interface
*iface
, const char *proto_name
)
322 const struct proto_handler
*proto
= &no_proto
;
325 proto
= get_proto_handler(proto_name
);
327 interface_add_error(iface
, "proto", "INVALID_PROTO", NULL
, 0);
332 iface
->proto_handler
= proto
;
336 interface_proto_event(struct interface_proto_state
*proto
,
337 enum interface_proto_cmd cmd
, bool force
)
339 enum interface_proto_event ev
;
342 ret
= proto
->cb(proto
, cmd
, force
);
343 if (ret
|| !(proto
->handler
->flags
& PROTO_FLAG_IMMEDIATE
))
347 case PROTO_CMD_SETUP
:
350 case PROTO_CMD_TEARDOWN
:
356 proto
->proto_event(proto
, ev
);