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
|
/*
* BIRD -- Babel Configuration
*
* Copyright (c) 2015-2016 Toke Hoiland-Jorgensen
* (c) 2016--2017 Ondrej Zajicek <santiago@crfreenet.org>
* (c) 2016--2017 CZ.NIC z.s.p.o.
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
CF_HDR
#include "proto/babel/babel.h"
#include "nest/iface.h"
CF_DEFINES
#define BABEL_CFG ((struct babel_config *) this_proto)
#define BABEL_IFACE ((struct babel_iface_config *) this_ipatt)
CF_DECLS
CF_KEYWORDS(BABEL, INTERFACE, METRIC, RXCOST, HELLO, UPDATE, INTERVAL, PORT,
TYPE, WIRED, WIRELESS, RX, TX, BUFFER, PRIORITY, LENGTH, CHECK, LINK,
NEXT, HOP, IPV4, IPV6, BABEL_METRIC, SHOW, INTERFACES, NEIGHBORS,
ENTRIES, RANDOMIZE, ROUTER, ID, AUTHENTICATION, NONE, MAC, PERMISSIVE)
CF_GRAMMAR
proto: babel_proto ;
babel_proto_start: proto_start BABEL
{
this_proto = proto_config_new(&proto_babel, $1);
init_list(&BABEL_CFG->iface_list);
BABEL_CFG->hold_time = 1 S_;
};
babel_proto_item:
proto_item
| proto_channel
| INTERFACE babel_iface
| RANDOMIZE ROUTER ID bool { BABEL_CFG->randomize_router_id = $4; }
;
babel_proto_opts:
/* empty */
| babel_proto_opts babel_proto_item ';'
;
babel_proto:
babel_proto_start proto_name '{' babel_proto_opts '}';
babel_iface_start:
{
this_ipatt = cfg_allocz(sizeof(struct babel_iface_config));
add_tail(&BABEL_CFG->iface_list, NODE this_ipatt);
init_list(&this_ipatt->ipn_list);
reset_passwords();
BABEL_IFACE->port = BABEL_PORT;
BABEL_IFACE->type = BABEL_IFACE_TYPE_WIRED;
BABEL_IFACE->limit = BABEL_HELLO_LIMIT;
BABEL_IFACE->tx_tos = IP_PREC_INTERNET_CONTROL;
BABEL_IFACE->tx_priority = sk_priority_control;
BABEL_IFACE->check_link = 1;
};
babel_iface_finish:
{
if (BABEL_IFACE->type == BABEL_IFACE_TYPE_WIRELESS)
{
if (!BABEL_IFACE->hello_interval)
BABEL_IFACE->hello_interval = BABEL_HELLO_INTERVAL_WIRELESS;
if (!BABEL_IFACE->rxcost)
BABEL_IFACE->rxcost = BABEL_RXCOST_WIRELESS;
}
else
{
if (!BABEL_IFACE->hello_interval)
BABEL_IFACE->hello_interval = BABEL_HELLO_INTERVAL_WIRED;
if (!BABEL_IFACE->rxcost)
BABEL_IFACE->rxcost = BABEL_RXCOST_WIRED;
}
/* Make sure we do not overflow the 16-bit centisec fields */
if (!BABEL_IFACE->update_interval)
BABEL_IFACE->update_interval = MIN_(BABEL_IFACE->hello_interval*BABEL_UPDATE_INTERVAL_FACTOR, BABEL_MAX_INTERVAL);
BABEL_IFACE->ihu_interval = MIN_(BABEL_IFACE->hello_interval*BABEL_IHU_INTERVAL_FACTOR, BABEL_MAX_INTERVAL);
BABEL_CFG->hold_time = MAX_(BABEL_CFG->hold_time, BABEL_IFACE->update_interval*BABEL_HOLD_TIME_FACTOR);
BABEL_IFACE->passwords = get_passwords();
if (!BABEL_IFACE->auth_type != !BABEL_IFACE->passwords)
cf_error("Authentication and password options should be used together");
if (BABEL_IFACE->passwords)
{
struct password_item *pass;
uint len = 0, i = 0;
WALK_LIST(pass, *BABEL_IFACE->passwords)
{
/* Set default crypto algorithm (HMAC-SHA256) */
if (!pass->alg)
pass->alg = ALG_HMAC_SHA256;
if (!((pass->alg & ALG_HMAC) ||
(pass->alg == ALG_BLAKE2S_128) ||
(pass->alg == ALG_BLAKE2S_256) ||
(pass->alg == ALG_BLAKE2B_256) ||
(pass->alg == ALG_BLAKE2B_512)))
cf_error("Only HMAC and Blake2 algorithms are supported");
len += mac_type_length(pass->alg);
i++;
}
BABEL_IFACE->mac_num_keys = i;
BABEL_IFACE->mac_total_len = len;
}
};
babel_iface_item:
| PORT expr { BABEL_IFACE->port = $2; if (($2<1) || ($2>65535)) cf_error("Invalid port number"); }
| RXCOST expr { BABEL_IFACE->rxcost = $2; if (($2<1) || ($2>65535)) cf_error("Invalid rxcost"); }
| LIMIT expr { BABEL_IFACE->limit = $2; if (($2<1) || ($2>16)) cf_error("Limit must be in range 1-16"); }
| TYPE WIRED { BABEL_IFACE->type = BABEL_IFACE_TYPE_WIRED; }
| TYPE WIRELESS { BABEL_IFACE->type = BABEL_IFACE_TYPE_WIRELESS; }
| HELLO INTERVAL expr_us { BABEL_IFACE->hello_interval = $3; if (($3<BABEL_MIN_INTERVAL) || ($3>BABEL_MAX_INTERVAL)) cf_error("Hello interval must be in range 10 ms - 655 s"); }
| UPDATE INTERVAL expr_us { BABEL_IFACE->update_interval = $3; if (($3<BABEL_MIN_INTERVAL) || ($3>BABEL_MAX_INTERVAL)) cf_error("Update interval must be in range 10 ms - 655 s"); }
| RX BUFFER expr { BABEL_IFACE->rx_buffer = $3; if (($3<256) || ($3>65535)) cf_error("RX buffer must be in range 256-65535"); }
| TX LENGTH expr { BABEL_IFACE->tx_length = $3; if (($3<256) || ($3>65535)) cf_error("TX length must be in range 256-65535"); }
| TX tos { BABEL_IFACE->tx_tos = $2; }
| TX PRIORITY expr { BABEL_IFACE->tx_priority = $3; }
| CHECK LINK bool { BABEL_IFACE->check_link = $3; }
| NEXT HOP IPV4 ipa { BABEL_IFACE->next_hop_ip4 = $4; if (!ipa_is_ip4($4)) cf_error("Must be an IPv4 address"); }
| NEXT HOP IPV6 ipa { BABEL_IFACE->next_hop_ip6 = $4; if (!ipa_is_ip6($4)) cf_error("Must be an IPv6 address"); }
| AUTHENTICATION NONE { BABEL_IFACE->auth_type = BABEL_AUTH_NONE; }
| AUTHENTICATION MAC { BABEL_IFACE->auth_type = BABEL_AUTH_MAC; BABEL_IFACE->auth_permissive = 0; }
| AUTHENTICATION MAC PERMISSIVE { BABEL_IFACE->auth_type = BABEL_AUTH_MAC; BABEL_IFACE->auth_permissive = 1; }
| password_list
;
babel_iface_opts:
/* empty */
| babel_iface_opts babel_iface_item ';'
;
babel_iface_opt_list:
/* empty */
| '{' babel_iface_opts '}'
;
babel_iface:
babel_iface_start iface_patt_list_nopx babel_iface_opt_list babel_iface_finish;
dynamic_attr: BABEL_METRIC { $$ = f_new_dynamic_attr(T_INT, EA_BABEL_METRIC); } ;
CF_CLI_HELP(SHOW BABEL, ..., [[Show information about Babel protocol]]);
CF_CLI(SHOW BABEL INTERFACES, optproto opttext, [<name>] [\"<interface>\"], [[Show information about Babel interfaces]])
{ PROTO_WALK_CMD($4, &proto_babel, p) babel_show_interfaces(p, $5); };
CF_CLI(SHOW BABEL NEIGHBORS, optproto opttext, [<name>] [\"<interface>\"], [[Show information about Babel neighbors]])
{ PROTO_WALK_CMD($4, &proto_babel, p) babel_show_neighbors(p, $5); };
CF_CLI(SHOW BABEL ENTRIES, optproto opttext, [<name>], [[Show information about Babel prefix entries]])
{ PROTO_WALK_CMD($4, &proto_babel, p) babel_show_entries(p); };
CF_CLI(SHOW BABEL ROUTES, optproto opttext, [<name>], [[Show information about Babel route entries]])
{ PROTO_WALK_CMD($4, &proto_babel, p) babel_show_routes(p); };
CF_CODE
CF_END
|
