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//==========================================================================
//
//      src/policy_token.l
//
//==========================================================================
// ####BSDCOPYRIGHTBEGIN####                                    
// -------------------------------------------                  
// This file is part of eCos, the Embedded Configurable Operating System.
//
// Portions of this software may have been derived from FreeBSD, OpenBSD,
// or other sources, and if so are covered by the appropriate copyright
// and license included herein.                                 
//
// Portions created by the Free Software Foundation are         
// Copyright (C) 2002 Free Software Foundation, Inc.            
// -------------------------------------------                  
// ####BSDCOPYRIGHTEND####                                      
//==========================================================================

/*      $KAME: policy_token.l,v 1.13 2003/05/09 05:19:55 sakane Exp $   */

/*
 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the project nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

%{
#define __FreeBSD__
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <net/route.h>
#include <net/pfkeyv2.h>
#include <netkey/keydb.h>
#include <netinet/in.h>
#include <netinet6/ipsec.h>

#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>

#ifdef __ECOS
#include "policy_parse.tab.h"
#else
#ifndef __NetBSD__
#include "y.tab.h"
#else
#include "policy_parse.h"
#endif
#define yylval __libyylval      /* XXX */
#endif

int yylex __P((void));
%}

%option noyywrap
%option nounput

/* common section */
nl              \n
ws              [ \t]+
digit           [0-9]
hexdigit        [0-9A-Fa-f]
special         [()+\|\?\*,]
dot             \.
comma           \,
hyphen          \-
colon           \:
slash           \/
bcl             \{
ecl             \}
blcl            \[
elcl            \]
percent         \%
semi            \;
usec            {dot}{digit}{1,6}
comment         \#.*
ccomment        "/*"
bracketstring   \<[^>]*\>
quotedstring    \"[^"]*\"
decstring       {digit}+
hexpair         {hexdigit}{hexdigit}
hexstring       0[xX]{hexdigit}+
octetstring     {octet}({dot}{octet})+
ipaddress       [a-zA-Z0-9:\._][a-zA-Z0-9:\._]*(%[a-zA-Z0-9]+)?

%%

in              { yylval.num = IPSEC_DIR_INBOUND; return(DIR); }
out             { yylval.num = IPSEC_DIR_OUTBOUND; return(DIR); }

discard         { yylval.num = IPSEC_POLICY_DISCARD; return(ACTION); }
none            { yylval.num = IPSEC_POLICY_NONE; return(ACTION); }
ipsec           { yylval.num = IPSEC_POLICY_IPSEC; return(ACTION); }
bypass          { yylval.num = IPSEC_POLICY_BYPASS; return(ACTION); }
entrust         { yylval.num = IPSEC_POLICY_ENTRUST; return(ACTION); }

esp             { yylval.num = IPPROTO_ESP; return(PROTOCOL); }
ah              { yylval.num = IPPROTO_AH; return(PROTOCOL); }
ipcomp          { yylval.num = IPPROTO_IPCOMP; return(PROTOCOL); }

transport       { yylval.num = IPSEC_MODE_TRANSPORT; return(MODE); }
tunnel          { yylval.num = IPSEC_MODE_TUNNEL; return(MODE); }

me              { return(ME); }
any             { return(ANY); }

default         { yylval.num = IPSEC_LEVEL_DEFAULT; return(LEVEL); }
use             { yylval.num = IPSEC_LEVEL_USE; return(LEVEL); }
require         { yylval.num = IPSEC_LEVEL_REQUIRE; return(LEVEL); }
unique{colon}{decstring} {
                        yylval.val.len = strlen(yytext + 7);
                        yylval.val.buf = yytext + 7;
                        return(LEVEL_SPECIFY);
                }
unique          { yylval.num = IPSEC_LEVEL_UNIQUE; return(LEVEL); }
{slash}         { return(SLASH); }

{ipaddress}     {
                        yylval.val.len = strlen(yytext);
                        yylval.val.buf = yytext;
                        return(IPADDRESS);
                }

{hyphen}        { return(HYPHEN); }

{ws}            { ; }
{nl}            { ; }

%%

void __policy__strbuffer__init__ __P((char *));
void __policy__strbuffer__free__ __P((void));

static YY_BUFFER_STATE strbuffer;

void
__policy__strbuffer__init__(msg)
        char *msg;
{
#if YY_FLEX_MAJOR_VERSION==2 && YY_FLEX_MINOR_VERSION==5 && YY_FLEX_SUBMINOR_VERSION>30
        if (YY_CURRENT_BUFFER)
                yy_delete_buffer(YY_CURRENT_BUFFER);
        
#else
        if (yy_current_buffer)
                yy_delete_buffer(yy_current_buffer);
#endif
        strbuffer = (YY_BUFFER_STATE)yy_scan_string(msg);
        yy_switch_to_buffer(strbuffer);

        return;
}

void
__policy__strbuffer__free__()
{
        yy_delete_buffer(strbuffer);

        return;
}