677 lines
12 KiB
Plaintext
677 lines
12 KiB
Plaintext
/* $KAME: parser.y,v 1.8 2000/11/08 03:03:34 jinmei Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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%{
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/uio.h>
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#include <sys/queue.h>
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#include <net/if.h>
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#if defined(__FreeBSD__) && __FreeBSD__ >= 3
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#include <net/if_var.h>
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#endif /* __FreeBSD__ >= 3 */
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#include <netinet/in.h>
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#include <netinet/in_var.h>
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#include <netinet/icmp6.h>
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#include <limits.h>
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#include <netdb.h>
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#include <string.h>
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#include <stdio.h>
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#include "rrenumd.h"
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struct config_is_set {
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u_short cis_dest : 1;
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} cis;
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struct dst_list *dl_head;
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struct payload_list *pl_head, ple_cur;
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u_int retry;
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char errbuf[LINE_MAX];
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extern int lineno;
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extern void yyerror __P((const char *s));
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extern int yylex __P((void));
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static struct payload_list * pllist_lookup __P((int seqnum));
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static void pllist_enqueue __P((struct payload_list *pl_entry));
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#define MAX_RETRYNUM 10 /* upper limit of retry in this rrenumd program */
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#define MAX_SEQNUM 256 /* upper limit of seqnum in this rrenumd program */
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#define NOSPEC -1
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%}
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%union {
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u_long num;
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struct {
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char *cp;
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int len;
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} cs;
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struct in_addr addr4;
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struct in6_addr addr6;
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struct {
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struct in6_addr addr;
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u_char plen;
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} prefix;
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struct dst_list *dl;
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struct payload_list *pl;
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struct sockaddr *sa;
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}
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%token <num> ADD CHANGE SETGLOBAL
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%token DEBUG_CMD DEST_CMD RETRY_CMD SEQNUM_CMD
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%token MATCH_PREFIX_CMD MAXLEN_CMD MINLEN_CMD
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%token USE_PREFIX_CMD KEEPLEN_CMD
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%token VLTIME_CMD PLTIME_CMD
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%token RAF_ONLINK_CMD RAF_AUTO_CMD RAF_DECRVALID_CMD RAF_DECRPREFD_CMD
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%token <num> DAYS HOURS MINUTES SECONDS INFINITY
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%token <num> ON OFF
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%token BCL ECL EOS ERROR
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%token <cs> NAME HOSTNAME QSTRING DECSTRING
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%token <addr4> IPV4ADDR
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%token <addr6> IPV6ADDR
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%token <num> PREFIXLEN
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%type <num> retrynum seqnum rrenum_cmd
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%type <num> prefixlen maxlen minlen keeplen vltime pltime
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%type <num> lifetime days hours minutes seconds
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%type <num> decstring
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%type <num> raf_onlink raf_auto raf_decrvalid raf_decrprefd flag
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%type <dl> dest_addrs dest_addr sin sin6
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%type <pl> rrenum_statement
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%type <cs> ifname
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%type <prefix> prefixval
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%%
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config:
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/* empty */
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| statements
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;
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statements:
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statement
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| statements statement
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;
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statement:
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debug_statement
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| destination_statement
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| rrenum_statement_without_seqnum
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| rrenum_statement_with_seqnum
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| error EOS
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{
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yyerrok;
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}
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| EOS
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;
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debug_statement:
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DEBUG_CMD flag EOS
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{
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#ifdef YYDEBUG
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yydebug = $2;
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#endif /* YYDEBUG */
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}
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;
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destination_statement:
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DEST_CMD dest_addrs retrynum EOS
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{
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dl_head = $2;
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retry = $3;
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}
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;
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dest_addrs:
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dest_addr
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| dest_addrs dest_addr
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{
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$2->dl_next = $1;
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$$ = $2;
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}
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;
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dest_addr :
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sin
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{
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with_v4dest = 1;
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}
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| sin6
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{
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with_v6dest = 1;
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}
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| sin6 ifname
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{
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struct sockaddr_in6 *sin6;
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sin6 = (struct sockaddr_in6 *)$1->dl_dst;
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sin6->sin6_scope_id = if_nametoindex($2.cp);
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with_v6dest = 1;
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$$ = $1;
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}
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| HOSTNAME
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{
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struct sockaddr_storage *ss;
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struct addrinfo hints, *res;
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int error;
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memset(&hints, 0, sizeof(hints));
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hints.ai_flags = AI_CANONNAME;
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hints.ai_family = AF_UNSPEC;
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hints.ai_socktype = SOCK_RAW;
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hints.ai_protocol = 0;
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error = getaddrinfo($1.cp, 0, &hints, &res);
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if (error) {
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snprintf(errbuf, sizeof(errbuf),
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"name resolution failed for %s:%s",
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$1.cp, gai_strerror(error));
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yyerror(errbuf);
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}
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ss = (struct sockaddr_storage *)malloc(sizeof(*ss));
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memset(ss, 0, sizeof(*ss));
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memcpy(ss, res->ai_addr, res->ai_addr->sa_len);
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freeaddrinfo(res);
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$$ = (struct dst_list *)
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malloc(sizeof(struct dst_list));
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memset($$, 0, sizeof(struct dst_list));
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$$->dl_dst = (struct sockaddr *)ss;
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}
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;
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sin:
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IPV4ADDR
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{
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struct sockaddr_in *sin;
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sin = (struct sockaddr_in *)malloc(sizeof(*sin));
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memset(sin, 0, sizeof(*sin));
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sin->sin_len = sizeof(*sin);
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sin->sin_family = AF_INET;
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sin->sin_addr = $1;
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$$ = (struct dst_list *)
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malloc(sizeof(struct dst_list));
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memset($$, 0, sizeof(struct dst_list));
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$$->dl_dst = (struct sockaddr *)sin;
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}
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;
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sin6:
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IPV6ADDR
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{
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struct sockaddr_in6 *sin6;
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sin6 = (struct sockaddr_in6 *)malloc(sizeof(*sin6));
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memset(sin6, 0, sizeof(*sin6));
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sin6->sin6_len = sizeof(*sin6);
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sin6->sin6_family = AF_INET6;
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sin6->sin6_addr = $1;
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$$ = (struct dst_list *)
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malloc(sizeof(struct dst_list));
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memset($$, 0, sizeof(struct dst_list));
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$$->dl_dst = (struct sockaddr *)sin6;
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}
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ifname:
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NAME
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{
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$$.cp = strdup($1.cp);
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$$.len = $1.len;
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}
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| QSTRING
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{
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$1.cp[$1.len - 1] = 0;
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$$.cp = strdup(&$1.cp[1]);
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$$.len = $1.len - 2;
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}
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;
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retrynum:
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/* empty */
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{
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$$ = 2;
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}
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| RETRY_CMD decstring
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{
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if ($2 > MAX_RETRYNUM)
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$2 = MAX_RETRYNUM;
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$$ = $2;
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}
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;
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rrenum_statement_with_seqnum:
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SEQNUM_CMD seqnum
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{
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if (pllist_lookup($2)) {
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snprintf(errbuf, sizeof(errbuf),
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"duplicate seqnum %ld specified at %d",
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$2, lineno);
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yyerror(errbuf);
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}
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}
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BCL rrenum_statement EOS ECL EOS
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{
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$5->pl_irr.rr_seqnum = $2;
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pllist_enqueue($5);
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}
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;
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seqnum:
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/* empty */
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{
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$$ = 0;
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}
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| decstring
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{
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if ($1 > MAX_SEQNUM) {
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snprintf(errbuf, sizeof(errbuf),
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"seqnum %ld is illegal for this program. "
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"should be between 0 and %d",
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$1, MAX_SEQNUM);
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yyerror(errbuf);
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}
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$$ = $1;
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}
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;
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rrenum_statement_without_seqnum:
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rrenum_statement EOS
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{
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if (pllist_lookup(0)) {
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snprintf(errbuf, sizeof(errbuf),
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"duplicate seqnum %d specified at %d",
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0, lineno);
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yyerror(errbuf);
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}
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$1->pl_irr.rr_seqnum = 0;
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pllist_enqueue($1);
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}
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;
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rrenum_statement:
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match_prefix_definition use_prefix_definition
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{
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$$ = (struct payload_list *)
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malloc(sizeof(struct payload_list));
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memcpy($$, &ple_cur, sizeof(ple_cur));
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}
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;
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match_prefix_definition:
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rrenum_cmd MATCH_PREFIX_CMD prefixval maxlen minlen
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{
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struct icmp6_router_renum *irr;
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struct rr_pco_match *rpm;
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irr = (struct icmp6_router_renum *)&ple_cur.pl_irr;
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rpm = (struct rr_pco_match *)(irr + 1);
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memset(rpm, 0, sizeof(*rpm));
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rpm->rpm_code = $1;
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rpm->rpm_prefix = $3.addr;
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rpm->rpm_matchlen = $3.plen;
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rpm->rpm_maxlen = $4;
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rpm->rpm_minlen = $5;
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}
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;
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rrenum_cmd:
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/* empty */
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{
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$$ = RPM_PCO_ADD;
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}
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| ADD
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| CHANGE
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| SETGLOBAL
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;
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prefixval:
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IPV6ADDR prefixlen
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{
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$$.addr = $1;
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$$.plen = $2;
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}
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;
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prefixlen:
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/* empty */
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{
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$$ = 64;
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}
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| PREFIXLEN
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;
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maxlen:
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/* empty */
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{
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$$ = 128;
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}
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| MAXLEN_CMD decstring
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{
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if ($2 > 128)
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$2 = 128;
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$$ = $2;
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}
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;
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minlen:
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/* empty */
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{
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$$ = 0;
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}
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| MINLEN_CMD decstring
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{
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if ($2 > 128)
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$2 = 128;
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$$ = $2;
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}
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;
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use_prefix_definition:
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/* empty */
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{
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struct icmp6_router_renum *irr;
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struct rr_pco_match *rpm;
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struct rr_pco_use *rpu;
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irr = (struct icmp6_router_renum *)&ple_cur.pl_irr;
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rpm = (struct rr_pco_match *)(irr + 1);
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rpu = (struct rr_pco_use *)(rpm + 1);
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memset(rpu, 0, sizeof(*rpu));
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}
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| USE_PREFIX_CMD prefixval keeplen use_prefix_values
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{
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struct icmp6_router_renum *irr;
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struct rr_pco_match *rpm;
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struct rr_pco_use *rpu;
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irr = (struct icmp6_router_renum *)&ple_cur.pl_irr;
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rpm = (struct rr_pco_match *)(irr + 1);
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rpu = (struct rr_pco_use *)(rpm + 1);
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rpu->rpu_prefix = $2.addr;
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rpu->rpu_uselen = $2.plen;
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rpu->rpu_keeplen = $3;
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}
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;
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use_prefix_values:
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/* empty */
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{
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struct icmp6_router_renum *irr;
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struct rr_pco_match *rpm;
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struct rr_pco_use *rpu;
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irr = (struct icmp6_router_renum *)&ple_cur.pl_irr;
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rpm = (struct rr_pco_match *)(irr + 1);
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rpu = (struct rr_pco_use *)(rpm + 1);
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memset(rpu, 0, sizeof(*rpu));
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rpu->rpu_vltime = htonl(DEF_VLTIME);
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rpu->rpu_pltime = htonl(DEF_PLTIME);
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rpu->rpu_ramask = 0;
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rpu->rpu_flags = 0;
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}
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| BCL vltime pltime raf_onlink raf_auto raf_decrvalid raf_decrprefd ECL
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{
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struct icmp6_router_renum *irr;
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struct rr_pco_match *rpm;
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struct rr_pco_use *rpu;
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irr = (struct icmp6_router_renum *)&ple_cur.pl_irr;
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rpm = (struct rr_pco_match *)(irr + 1);
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rpu = (struct rr_pco_use *)(rpm + 1);
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memset(rpu, 0, sizeof(*rpu));
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rpu->rpu_vltime = $2;
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rpu->rpu_pltime = $3;
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if ($4 == NOSPEC) {
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rpu->rpu_ramask &=
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~ICMP6_RR_PCOUSE_RAFLAGS_ONLINK;
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} else {
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rpu->rpu_ramask |=
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ICMP6_RR_PCOUSE_RAFLAGS_ONLINK;
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if ($4 == ON) {
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rpu->rpu_raflags |=
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ICMP6_RR_PCOUSE_RAFLAGS_ONLINK;
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} else {
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rpu->rpu_raflags &=
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~ICMP6_RR_PCOUSE_RAFLAGS_ONLINK;
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}
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}
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if ($5 == NOSPEC) {
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rpu->rpu_ramask &=
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ICMP6_RR_PCOUSE_RAFLAGS_AUTO;
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} else {
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rpu->rpu_ramask |=
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ICMP6_RR_PCOUSE_RAFLAGS_AUTO;
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if ($5 == ON) {
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rpu->rpu_raflags |=
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ICMP6_RR_PCOUSE_RAFLAGS_AUTO;
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} else {
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rpu->rpu_raflags &=
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~ICMP6_RR_PCOUSE_RAFLAGS_AUTO;
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}
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}
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rpu->rpu_flags = 0;
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if ($6 == ON) {
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rpu->rpu_flags |=
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ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME;
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}
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if ($7 == ON) {
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rpu->rpu_flags |=
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ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME;
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}
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}
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;
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keeplen:
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/* empty */
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{
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$$ = 0;
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}
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| KEEPLEN_CMD decstring
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{
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if ($2 > 128)
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$2 = 128;
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$$ = $2;
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}
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;
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vltime:
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/* empty */
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{
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$$ = htonl(DEF_VLTIME);
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}
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| VLTIME_CMD lifetime
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{
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$$ = htonl($2);
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}
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;
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pltime:
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/* empty */
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{
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$$ = htonl(DEF_PLTIME);
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}
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| PLTIME_CMD lifetime
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{
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$$ = htonl($2);
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}
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raf_onlink:
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/* empty */
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{
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$$ = NOSPEC;
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}
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| RAF_ONLINK_CMD flag
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{
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$$ = $2;
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}
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;
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raf_auto:
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/* empty */
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{
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$$ = NOSPEC;
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}
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| RAF_AUTO_CMD flag
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{
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$$ = $2;
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}
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;
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raf_decrvalid:
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/* empty */
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{
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$$ = NOSPEC;
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}
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| RAF_DECRVALID_CMD flag
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{
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$$ = $2;
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}
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;
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raf_decrprefd:
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|
/* empty */
|
|
{
|
|
$$ = NOSPEC;
|
|
}
|
|
| RAF_DECRPREFD_CMD flag
|
|
{
|
|
$$ = $2;
|
|
}
|
|
;
|
|
|
|
flag:
|
|
ON { $$ = ON; }
|
|
| OFF { $$ = OFF; }
|
|
;
|
|
|
|
lifetime:
|
|
decstring
|
|
| INFINITY
|
|
{
|
|
$$ = 0xffffffff;
|
|
}
|
|
| days hours minutes seconds
|
|
{
|
|
int d, h, m, s;
|
|
|
|
d = $1 * 24 * 60 * 60;
|
|
h = $2 * 60 * 60;
|
|
m = $3 * 60;
|
|
s = $4;
|
|
$$ = d + h + m + s;
|
|
}
|
|
;
|
|
|
|
days:
|
|
/* empty */
|
|
{
|
|
$$ = 0;
|
|
}
|
|
| DAYS
|
|
;
|
|
|
|
hours:
|
|
/* empty */
|
|
{
|
|
$$ = 0;
|
|
}
|
|
| HOURS
|
|
;
|
|
|
|
minutes:
|
|
/* empty */
|
|
{
|
|
$$ = 0;
|
|
}
|
|
| MINUTES
|
|
;
|
|
|
|
seconds:
|
|
/* empty */
|
|
{
|
|
$$ = 0;
|
|
}
|
|
| SECONDS
|
|
;
|
|
|
|
decstring:
|
|
DECSTRING
|
|
{
|
|
int dval;
|
|
|
|
dval = atoi($1.cp);
|
|
$$ = dval;
|
|
}
|
|
;
|
|
|
|
%%
|
|
|
|
static struct payload_list *
|
|
pllist_lookup(int seqnum)
|
|
{
|
|
struct payload_list *pl;
|
|
for (pl = pl_head; pl && pl->pl_irr.rr_seqnum != seqnum;
|
|
pl = pl->pl_next)
|
|
continue;
|
|
return (pl);
|
|
}
|
|
|
|
static void
|
|
pllist_enqueue(struct payload_list *pl_entry)
|
|
{
|
|
struct payload_list *pl, *pl_last;
|
|
|
|
pl_last = NULL;
|
|
for (pl = pl_head;
|
|
pl && pl->pl_irr.rr_seqnum < pl_entry->pl_irr.rr_seqnum;
|
|
pl_last = pl, pl = pl->pl_next)
|
|
continue;
|
|
if (pl_last)
|
|
pl_last->pl_next = pl_entry;
|
|
else
|
|
pl_head = pl_entry;
|
|
|
|
return;
|
|
}
|