1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include "netifd.h"
#include "interface.h"
#include "interface-ip.h"
#include "proto.h"
#include "system.h"
enum {
OPT_IPADDR,
OPT_IP6ADDR,
OPT_NETMASK,
OPT_GATEWAY,
OPT_IP6GW,
__OPT_MAX,
};
static const struct blobmsg_policy static_attrs[__OPT_MAX] = {
[OPT_IPADDR] = { .name = "ipaddr", .type = BLOBMSG_TYPE_ARRAY },
[OPT_IP6ADDR] = { .name = "ip6addr", .type = BLOBMSG_TYPE_ARRAY },
[OPT_NETMASK] = { .name = "netmask", .type = BLOBMSG_TYPE_STRING },
[OPT_GATEWAY] = { .name = "gateway", .type = BLOBMSG_TYPE_STRING },
[OPT_IP6GW] = { .name = "ip6gw", .type = BLOBMSG_TYPE_STRING },
};
static const union config_param_info static_attr_info[__OPT_MAX] = {
[OPT_IPADDR] = { .type = BLOBMSG_TYPE_STRING },
[OPT_IP6ADDR] = { .type = BLOBMSG_TYPE_STRING },
};
static const struct config_param_list static_attr_list = {
.n_params = __OPT_MAX,
.params = static_attrs,
.info = static_attr_info,
};
struct static_proto_state {
struct interface_proto_state proto;
struct blob_attr *config;
};
static bool
parse_addr(struct interface *iface, const char *str, bool v6, int mask)
{
struct device_addr *addr;
addr = proto_parse_ip_addr_string(str, v6, mask);
if (!addr) {
interface_add_error(iface, "proto-static", "INVALID_ADDRESS", &str, 1);
return false;
}
vlist_add(&iface->proto_addr, &addr->node);
return true;
}
static int
parse_address_option(struct interface *iface, struct blob_attr *attr, bool v6, int netmask)
{
struct blob_attr *cur;
int n_addr = 0;
int rem;
blobmsg_for_each_attr(cur, attr, rem) {
n_addr++;
if (!parse_addr(iface, blobmsg_data(cur), v6, netmask))
return -1;
}
return n_addr;
}
static bool
parse_gateway_option(struct interface *iface, struct blob_attr *attr, bool v6)
{
struct device_route *route;
const char *str = blobmsg_data(attr);
int af = v6 ? AF_INET6 : AF_INET;
route = calloc(1, sizeof(*route));
if (!inet_pton(af, str, &route->nexthop)) {
interface_add_error(iface, "proto-static",
"INVALID_GATEWAY", &str, 1);
free(route);
return false;
}
route->mask = 0;
route->flags = DEVADDR_DEVICE | (v6 ? DEVADDR_INET6 : DEVADDR_INET4);
vlist_add(&iface->proto_route, &route->node);
return true;
}
static int
proto_apply_static_settings(struct interface *iface, struct blob_attr *attr)
{
struct blob_attr *tb[__OPT_MAX];
struct in_addr ina;
const char *error;
int netmask = 32;
int n_v4 = 0, n_v6 = 0;
blobmsg_parse(static_attrs, __OPT_MAX, tb, blob_data(attr), blob_len(attr));
if (tb[OPT_NETMASK]) {
if (!inet_aton(blobmsg_data(tb[OPT_NETMASK]), &ina)) {
error = "INVALID_NETMASK";
goto error;
}
netmask = 32 - fls(~(ntohl(ina.s_addr)));
}
if (tb[OPT_IPADDR])
n_v4 = parse_address_option(iface, tb[OPT_IPADDR], false, netmask);
if (tb[OPT_IP6ADDR])
n_v6 = parse_address_option(iface, tb[OPT_IP6ADDR], true, netmask);
if (!n_v4 && !n_v6) {
error = "NO_ADDRESS";
goto error;
}
if (n_v4 < 0 || n_v6 < 0)
goto out;
if (n_v4 && tb[OPT_GATEWAY]) {
if (!parse_gateway_option(iface, tb[OPT_GATEWAY], false))
goto out;
}
if (n_v6 && tb[OPT_IP6GW]) {
if (!parse_gateway_option(iface, tb[OPT_IP6GW], true))
goto out;
}
return 0;
error:
interface_add_error(iface, "proto-static", error, NULL, 0);
out:
return -1;
}
static bool
static_proto_setup(struct static_proto_state *state)
{
return proto_apply_static_settings(state->proto.iface, state->config) == 0;
}
static int
static_handler(struct interface_proto_state *proto,
enum interface_proto_cmd cmd, bool force)
{
struct static_proto_state *state;
int ret = 0;
state = container_of(proto, struct static_proto_state, proto);
switch (cmd) {
case PROTO_CMD_SETUP:
if (!static_proto_setup(state))
return -1;
break;
case PROTO_CMD_TEARDOWN:
break;
}
return ret;
}
static void
static_free(struct interface_proto_state *proto)
{
struct static_proto_state *state;
state = container_of(proto, struct static_proto_state, proto);
free(state->config);
free(state);
}
struct interface_proto_state *
static_attach(const struct proto_handler *h, struct interface *iface,
struct blob_attr *attr)
{
struct static_proto_state *state;
state = calloc(1, sizeof(*state));
if (!state)
return NULL;
state->config = malloc(blob_pad_len(attr));
if (!state->config)
goto error;
memcpy(state->config, attr, blob_pad_len(attr));
state->proto.free = static_free;
state->proto.cb = static_handler;
return &state->proto;
error:
free(state);
return NULL;
}
static struct proto_handler static_proto = {
.name = "static",
.flags = PROTO_FLAG_IMMEDIATE,
.config_params = &static_attr_list,
.attach = static_attach,
};
static void __init
static_proto_init(void)
{
add_proto_handler(&static_proto);
}
|
