1/*	$FreeBSD$	*/
2/*	$KAME: token.l,v 1.43 2003/07/25 09:35:28 itojun Exp $	*/
3
4/*-
5 * SPDX-License-Identifier: BSD-3-Clause
6 *
7 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the project nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35%{
36#include <sys/types.h>
37#include <sys/param.h>
38#include <sys/socket.h>
39#include <net/route.h>
40#include <net/pfkeyv2.h>
41#include <netipsec/keydb.h>
42#include <netipsec/key_debug.h>
43#include <netinet/in.h>
44#include <netipsec/ipsec.h>
45
46#include <stdlib.h>
47#include <limits.h>
48#include <string.h>
49#include <unistd.h>
50#include <errno.h>
51#include <netdb.h>
52
53#include "vchar.h"
54#include "y.tab.h"
55
56int lineno = 1;
57
58extern u_char m_buf[BUFSIZ];
59extern u_int m_len;
60extern int f_debug;
61
62int yylex(void);
63void yyfatal(const char *s);
64void yyerror(const char *s);
65extern void parse_init(void);
66int parse(FILE **);
67int yyparse(void);
68%}
69
70%option noyywrap
71
72/* common section */
73nl		\n
74ws		[ \t]+
75digit		[0-9]
76letter		[0-9A-Za-z]
77hexdigit	[0-9A-Fa-f]
78dot		\.
79hyphen		\-
80slash		\/
81blcl		\[
82elcl		\]
83semi		\;
84comment		\#.*
85quotedstring	\"[^"]*\"
86decstring	{digit}+
87hexstring	0[xX]{hexdigit}+
88ipaddress	[a-fA-F0-9:]([a-fA-F0-9:\.]*|[a-fA-F0-9:\.]*%[a-zA-Z0-9]*)
89ipaddrmask	{slash}{digit}{1,3}
90name		{letter}(({letter}|{digit}|{hyphen})*({letter}|{digit}))*
91hostname	{name}(({dot}{name})+{dot}?)?
92
93%s S_PL S_AUTHALG S_ENCALG
94
95%%
96
97add		{ return(ADD); }
98delete		{ return(DELETE); }
99deleteall	{ return(DELETEALL); }
100get		{ return(GET); }
101flush		{ return(FLUSH); }
102dump		{ return(DUMP); }
103
104	/* for management SPD */
105spdadd		{ return(SPDADD); }
106spddelete	{ return(SPDDELETE); }
107spddump		{ return(SPDDUMP); }
108spdflush	{ return(SPDFLUSH); }
109tagged		{ return(TAGGED); }
110{hyphen}P	{ BEGIN S_PL; return(F_POLICY); }
111<S_PL>[a-zA-Z0-9:\.\-_/ \n\t][a-zA-Z0-9:\.%\-_/ \n\t]* {
112			yymore();
113
114			/* count up for nl */
115			    {
116				char *p;
117				for (p = yytext; *p != '\0'; p++)
118					if (*p == '\n')
119						lineno++;
120			    }
121
122			yylval.val.len = strlen(yytext);
123			yylval.val.buf = strdup(yytext);
124			if (!yylval.val.buf)
125				yyfatal("insufficient memory");
126
127			return(PL_REQUESTS);
128		}
129<S_PL>{semi}	{ BEGIN INITIAL; return(EOT); }
130
131	/* address resolution flags */
132{hyphen}[n46][n46]*	{
133			yylval.val.len = strlen(yytext);
134			yylval.val.buf = strdup(yytext);
135			if (!yylval.val.buf)
136				yyfatal("insufficient memory");
137			return(F_AIFLAGS);
138		}
139
140	/* security protocols */
141ah		{ yylval.num = 0; return(PR_AH); }
142esp		{ yylval.num = 0; return(PR_ESP); }
143ah-old		{ yylval.num = 1; return(PR_AH); }
144esp-old		{ yylval.num = 1; return(PR_ESP); }
145ipcomp		{ yylval.num = 0; return(PR_IPCOMP); }
146tcp		{ yylval.num = 0; return(PR_TCP); }
147
148	/* authentication alogorithm */
149{hyphen}A	{ BEGIN S_AUTHALG; return(F_AUTH); }
150<S_AUTHALG>hmac-sha1	{ yylval.num = SADB_AALG_SHA1HMAC; BEGIN INITIAL; return(ALG_AUTH); }
151<S_AUTHALG>hmac-sha2-256 { yylval.num = SADB_X_AALG_SHA2_256; BEGIN INITIAL; return(ALG_AUTH); }
152<S_AUTHALG>hmac-sha2-384 { yylval.num = SADB_X_AALG_SHA2_384; BEGIN INITIAL; return(ALG_AUTH); }
153<S_AUTHALG>hmac-sha2-512 { yylval.num = SADB_X_AALG_SHA2_512; BEGIN INITIAL; return(ALG_AUTH); }
154<S_AUTHALG>aes-xcbc-mac { yylval.num = SADB_X_AALG_AES_XCBC_MAC; BEGIN INITIAL; return(ALG_AUTH); }
155<S_AUTHALG>tcp-md5	{ yylval.num = SADB_X_AALG_TCP_MD5; BEGIN INITIAL; return(ALG_AUTH); }
156<S_AUTHALG>null { yylval.num = SADB_X_AALG_NULL; BEGIN INITIAL; return(ALG_AUTH_NOKEY); }
157
158	/* encryption alogorithm */
159{hyphen}E	{ BEGIN S_ENCALG; return(F_ENC); }
160<S_ENCALG>null		{ yylval.num = SADB_EALG_NULL; BEGIN INITIAL; return(ALG_ENC); }
161<S_ENCALG>simple	{ yylval.num = SADB_EALG_NULL; BEGIN INITIAL; return(ALG_ENC_OLD); }
162<S_ENCALG>rijndael-cbc	{ yylval.num = SADB_X_EALG_AESCBC; BEGIN INITIAL; return(ALG_ENC); }
163<S_ENCALG>aes-cbc	{ yylval.num = SADB_X_EALG_AESCBC; BEGIN INITIAL; return(ALG_ENC); }
164<S_ENCALG>aes-ctr	{ yylval.num = SADB_X_EALG_AESCTR; BEGIN INITIAL; return(ALG_ENC_SALT); }
165<S_ENCALG>aes-gcm-16	{ yylval.num = SADB_X_EALG_AESGCM16; BEGIN INITIAL; return(ALG_ENC_SALT); }
166
167	/* compression algorithms */
168{hyphen}C	{ return(F_COMP); }
169oui		{ yylval.num = SADB_X_CALG_OUI; return(ALG_COMP); }
170deflate		{ yylval.num = SADB_X_CALG_DEFLATE; return(ALG_COMP); }
171lzs		{ yylval.num = SADB_X_CALG_LZS; return(ALG_COMP); }
172{hyphen}R	{ return(F_RAWCPI); }
173
174	/* extension */
175{hyphen}m	{ return(F_MODE); }
176transport	{ yylval.num = IPSEC_MODE_TRANSPORT; return(MODE); }
177tunnel		{ yylval.num = IPSEC_MODE_TUNNEL; return(MODE); }
178{hyphen}u	{ return(F_REQID); }
179{hyphen}f	{ return(F_EXT); }
180random-pad	{ yylval.num = SADB_X_EXT_PRAND; return(EXTENSION); }
181seq-pad		{ yylval.num = SADB_X_EXT_PSEQ; return(EXTENSION); }
182zero-pad	{ yylval.num = SADB_X_EXT_PZERO; return(EXTENSION); }
183nocyclic-seq	{ return(NOCYCLICSEQ); }
184{hyphen}r	{ return(F_REPLAY); }
185{hyphen}lh	{ return(F_LIFETIME_HARD); }
186{hyphen}ls	{ return(F_LIFETIME_SOFT); }
187
188	/* ... */
189any		{ return(ANY); }
190{ws}		{ }
191{nl}		{ lineno++; }
192{comment}
193{semi}		{ return(EOT); }
194
195	/* for address parameters: /prefix, [port] */
196{slash}		{ return SLASH; }
197{blcl}		{ return BLCL; }
198{elcl}		{ return ELCL; }
199
200	/* parameter */
201{decstring}	{
202			char *bp;
203
204			yylval.ulnum = strtoul(yytext, &bp, 10);
205			return(DECSTRING);
206		}
207
208{hexstring}	{
209			yylval.val.buf = strdup(yytext + 2);
210			if (!yylval.val.buf)
211				yyfatal("insufficient memory");
212			yylval.val.len = strlen(yylval.val.buf);
213
214			return(HEXSTRING);
215		}
216
217{quotedstring}	{
218			char *p = yytext;
219			while (*++p != '"') ;
220			*p = '\0';
221			yytext++;
222			yylval.val.len = yyleng - 2;
223			yylval.val.buf = strdup(yytext);
224			if (!yylval.val.buf)
225				yyfatal("insufficient memory");
226
227			return(QUOTEDSTRING);
228		}
229
230[A-Za-z0-9:][A-Za-z0-9:%\.-]* {
231			yylval.val.len = yyleng;
232			yylval.val.buf = strdup(yytext);
233			if (!yylval.val.buf)
234				yyfatal("insufficient memory");
235			return(STRING);
236		}
237
238[0-9,]+ {
239			yylval.val.len = yyleng;
240			yylval.val.buf = strdup(yytext);
241			if (!yylval.val.buf)
242				yyfatal("insufficient memory");
243			return(STRING);
244		}
245
246.		{
247			yyfatal("Syntax error");
248			/*NOTREACHED*/
249		}
250
251%%
252
253void
254yyfatal(s)
255	const char *s;
256{
257	yyerror(s);
258	exit(1);
259}
260
261void
262yyerror(s)
263	const char *s;
264{
265	printf("line %d: %s at [%s]\n", lineno, s, yytext);
266}
267
268int
269parse(fp)
270	FILE **fp;
271{
272	yyin = *fp;
273
274	parse_init();
275
276	if (yyparse()) {
277		printf("parse failed, line %d.\n", lineno);
278		return(-1);
279	}
280
281	return(0);
282}
283