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|
%define api.pure
%define api.push-pull push
%name-prefix "fastd_config_"
%parse-param {fastd_context *ctx}
%parse-param {fastd_config *conf}
%parse-param {int depth}
%code requires {
#include <fastd.h>
#include <arpa/inet.h>
}
%union {
int num;
char* str;
struct in_addr addr;
struct in6_addr addr6;
}
%token START_CONFIG
%token START_PEER_CONFIG
%token <num> TOK_INTEGER
%token <str> TOK_STRING
%token TOK_INTERFACE
%token TOK_BIND
%token TOK_MTU
%token TOK_MODE
%token TOK_PROTOCOL
%token TOK_PEER
%token TOK_ADDRESS
%token TOK_SECRET
%token TOK_KEY
%token TOK_INCLUDE
%token TOK_AS
%token TOK_ANY
%token TOK_TAP
%token TOK_TUN
%token <addr> TOK_ADDR
%token <addr6> TOK_ADDR6
%code {
#include <config.h>
#include <stdint.h>
#include <peer.h>
void fastd_config_error(fastd_context *ctx, fastd_config *conf, int depth, char *s);
extern fastd_protocol fastd_protocol_null;
#ifdef WITH_PROTOCOL_ECFXP
extern fastd_protocol fastd_protocol_ec25519_fhmqvc_xsalsa20_poly1305;
#endif
}
%type <str> maybe_string
%type <num> port
%type <num> maybe_port
%type <num> maybe_port_default
%type <str> maybe_as
%%
start: START_CONFIG config
| START_PEER_CONFIG peer_conf
;
config: config statement
|
;
statement: TOK_INTERFACE interface ';'
| TOK_BIND bind ';'
| TOK_MTU mtu ';'
| TOK_MODE mode ';'
| TOK_PROTOCOL protocol ';'
| TOK_SECRET secret ';'
| TOK_PEER peer '{' peer_conf '}'
| TOK_INCLUDE include ';'
;
interface: TOK_STRING { free(conf->ifname); conf->ifname = $1; }
;
bind: TOK_ADDR maybe_port {
conf->bind_addr_in.sin_family = AF_INET;
conf->bind_addr_in.sin_addr = $1;
conf->bind_addr_in.sin_port = $2;
}
| TOK_ADDR6 maybe_port {
conf->bind_addr_in6.sin6_family = AF_INET6;
conf->bind_addr_in6.sin6_addr = $1;
conf->bind_addr_in6.sin6_port = $2;
}
| TOK_ANY maybe_port {
conf->bind_addr_in.sin_addr.s_addr = htonl(INADDR_ANY);
conf->bind_addr_in.sin_port = $2;
conf->bind_addr_in6.sin6_addr = in6addr_any;
conf->bind_addr_in6.sin6_port = $2;
}
;
mtu: TOK_INTEGER { conf->mtu = $1; }
;
mode: TOK_TAP { conf->mode = MODE_TAP; }
| TOK_TUN { conf->mode = MODE_TUN; }
;
protocol: TOK_STRING {
if (!strcmp($1, "null"))
conf->protocol = &fastd_protocol_null;
#ifdef WITH_PROTOCOL_ECFXP
else if (!strcmp($1, "ecfxp"))
conf->protocol = &fastd_protocol_ec25519_fhmqvc_xsalsa20_poly1305;
#endif
else
exit_error(ctx, "config error: invalid protocol `%s'", $1);
free($1);
}
;
secret: TOK_STRING { free(conf->secret); conf->secret = $1; }
;
peer: maybe_string {
fastd_peer_config_new(ctx, conf);
conf->peers->name = $1;
}
;
peer_conf: peer_conf peer_statement
|
;
peer_statement: TOK_ADDRESS peer_address ';'
| TOK_KEY peer_key ';'
| TOK_INCLUDE peer_include ';'
;
peer_address: TOK_ADDR maybe_port_default {
conf->peers->address.in.sin_family = AF_INET;
conf->peers->address.in.sin_addr = $1;
conf->peers->address.in.sin_port = $2;
}
| TOK_ADDR6 maybe_port_default {
conf->peers->address.in6.sin6_family = AF_INET6;
conf->peers->address.in6.sin6_addr = $1;
conf->peers->address.in6.sin6_port = $2;
}
;
peer_key: TOK_STRING { free(conf->peers->key); conf->peers->key = $1; }
;
peer_include: TOK_STRING { fastd_read_config(ctx, conf, $1, true, depth); free($1); }
;
include: TOK_PEER TOK_STRING maybe_as {
fastd_peer_config_new(ctx, conf);
conf->peers->name = $3;
fastd_read_config(ctx, conf, $2, true, depth);
free($2);
}
| TOK_STRING { fastd_read_config(ctx, conf, $1, false, depth); free($1); }
;
maybe_string: TOK_STRING
| { $$ = NULL; }
;
maybe_port: ':' port { $$ = $2; }
| { $$ = 0; }
;
maybe_port_default: ':' port { $$ = $2; }
| { $$ = htons(1337); }
;
maybe_as: TOK_AS TOK_STRING { $$ = $2; }
| { $$ = NULL; }
;
port: TOK_INTEGER {
if ($1 < 0 || $1 > 65635)
exit_error(ctx, "invalid port %i", $1);
$$ = htons($1);
}
;
%%
void fastd_config_error(fastd_context *ctx, fastd_config *conf, int depth, char *s) {
exit_error(ctx, "config error: %s", s);
}
|
