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 56 int lineno = 1; 57 58 extern u_char m_buf[BUFSIZ]; 59 extern u_int m_len; 60 extern int f_debug; 61 62 int yylex(void); 63 void yyfatal(const char *s); 64 void yyerror(const char *s); 65 extern void parse_init(void); 66 int parse(FILE **); 67 int yyparse(void); 68 %} 69 70 %option noyywrap 71 72 /* common section */ 73 nl \n 74 ws [ \t]+ 75 digit [0-9] 76 letter [0-9A-Za-z] 77 hexdigit [0-9A-Fa-f] 78 dot \. 79 hyphen \- 80 slash \/ 81 blcl \[ 82 elcl \] 83 semi \; 84 comment \#.* 85 quotedstring \"[^"]*\" 86 decstring {digit}+ 87 hexstring 0[xX]{hexdigit}+ 88 ipaddress [a-fA-F0-9:]([a-fA-F0-9:\.]*|[a-fA-F0-9:\.]*%[a-zA-Z0-9]*) 89 ipaddrmask {slash}{digit}{1,3} 90 name {letter}(({letter}|{digit}|{hyphen})*({letter}|{digit}))* 91 hostname {name}(({dot}{name})+{dot}?)? 92 93 %s S_PL S_AUTHALG S_ENCALG 94 95 %% 96 97 add { return(ADD); } 98 delete { return(DELETE); } 99 deleteall { return(DELETEALL); } 100 get { return(GET); } 101 flush { return(FLUSH); } 102 dump { return(DUMP); } 103 104 /* for management SPD */ 105 spdadd { return(SPDADD); } 106 spddelete { return(SPDDELETE); } 107 spddump { return(SPDDUMP); } 108 spdflush { return(SPDFLUSH); } 109 tagged { 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 */ 141 ah { yylval.num = 0; return(PR_AH); } 142 esp { yylval.num = 0; return(PR_ESP); } 143 ah-old { yylval.num = 1; return(PR_AH); } 144 esp-old { yylval.num = 1; return(PR_ESP); } 145 ipcomp { yylval.num = 0; return(PR_IPCOMP); } 146 tcp { yylval.num = 0; return(PR_TCP); } 147 148 /* authentication alogorithm */ 149 {hyphen}A { BEGIN S_AUTHALG; return(F_AUTH); } 150 <S_AUTHALG>hmac-md5 { yylval.num = SADB_AALG_MD5HMAC; BEGIN INITIAL; return(ALG_AUTH); } 151 <S_AUTHALG>hmac-sha1 { yylval.num = SADB_AALG_SHA1HMAC; BEGIN INITIAL; return(ALG_AUTH); } 152 <S_AUTHALG>keyed-md5 { yylval.num = SADB_X_AALG_MD5; BEGIN INITIAL; return(ALG_AUTH); } 153 <S_AUTHALG>keyed-sha1 { yylval.num = SADB_X_AALG_SHA; BEGIN INITIAL; return(ALG_AUTH); } 154 <S_AUTHALG>hmac-sha2-256 { yylval.num = SADB_X_AALG_SHA2_256; BEGIN INITIAL; return(ALG_AUTH); } 155 <S_AUTHALG>hmac-sha2-384 { yylval.num = SADB_X_AALG_SHA2_384; BEGIN INITIAL; return(ALG_AUTH); } 156 <S_AUTHALG>hmac-sha2-512 { yylval.num = SADB_X_AALG_SHA2_512; BEGIN INITIAL; return(ALG_AUTH); } 157 <S_AUTHALG>hmac-ripemd160 { yylval.num = SADB_X_AALG_RIPEMD160HMAC; BEGIN INITIAL; return(ALG_AUTH); } 158 <S_AUTHALG>aes-xcbc-mac { yylval.num = SADB_X_AALG_AES_XCBC_MAC; BEGIN INITIAL; return(ALG_AUTH); } 159 <S_AUTHALG>tcp-md5 { yylval.num = SADB_X_AALG_TCP_MD5; BEGIN INITIAL; return(ALG_AUTH); } 160 <S_AUTHALG>null { yylval.num = SADB_X_AALG_NULL; BEGIN INITIAL; return(ALG_AUTH_NOKEY); } 161 162 /* encryption alogorithm */ 163 {hyphen}E { BEGIN S_ENCALG; return(F_ENC); } 164 <S_ENCALG>des-cbc { yylval.num = SADB_EALG_DESCBC; BEGIN INITIAL; return(ALG_ENC); } 165 <S_ENCALG>3des-cbc { yylval.num = SADB_EALG_3DESCBC; BEGIN INITIAL; return(ALG_ENC); } 166 <S_ENCALG>null { yylval.num = SADB_EALG_NULL; BEGIN INITIAL; return(ALG_ENC); } 167 <S_ENCALG>simple { yylval.num = SADB_EALG_NULL; BEGIN INITIAL; return(ALG_ENC_OLD); } 168 <S_ENCALG>blowfish-cbc { yylval.num = SADB_X_EALG_BLOWFISHCBC; BEGIN INITIAL; return(ALG_ENC); } 169 <S_ENCALG>cast128-cbc { yylval.num = SADB_X_EALG_CAST128CBC; BEGIN INITIAL; return(ALG_ENC); } 170 <S_ENCALG>des-deriv { yylval.num = SADB_EALG_DESCBC; BEGIN INITIAL; return(ALG_ENC_DESDERIV); } 171 <S_ENCALG>des-32iv { yylval.num = SADB_EALG_DESCBC; BEGIN INITIAL; return(ALG_ENC_DES32IV); } 172 <S_ENCALG>rijndael-cbc { yylval.num = SADB_X_EALG_RIJNDAELCBC; BEGIN INITIAL; return(ALG_ENC); } 173 <S_ENCALG>aes-ctr { yylval.num = SADB_X_EALG_AESCTR; BEGIN INITIAL; return(ALG_ENC_SALT); } 174 <S_ENCALG>camellia-cbc { yylval.num = SADB_X_EALG_CAMELLIACBC; BEGIN INITIAL; return(ALG_ENC); } 175 <S_ENCALG>aes-gcm-16 { yylval.num = SADB_X_EALG_AESGCM16; BEGIN INITIAL; return(ALG_ENC_SALT); } 176 177 /* compression algorithms */ 178 {hyphen}C { return(F_COMP); } 179 oui { yylval.num = SADB_X_CALG_OUI; return(ALG_COMP); } 180 deflate { yylval.num = SADB_X_CALG_DEFLATE; return(ALG_COMP); } 181 lzs { yylval.num = SADB_X_CALG_LZS; return(ALG_COMP); } 182 {hyphen}R { return(F_RAWCPI); } 183 184 /* extension */ 185 {hyphen}m { return(F_MODE); } 186 transport { yylval.num = IPSEC_MODE_TRANSPORT; return(MODE); } 187 tunnel { yylval.num = IPSEC_MODE_TUNNEL; return(MODE); } 188 {hyphen}u { return(F_REQID); } 189 {hyphen}f { return(F_EXT); } 190 random-pad { yylval.num = SADB_X_EXT_PRAND; return(EXTENSION); } 191 seq-pad { yylval.num = SADB_X_EXT_PSEQ; return(EXTENSION); } 192 zero-pad { yylval.num = SADB_X_EXT_PZERO; return(EXTENSION); } 193 nocyclic-seq { return(NOCYCLICSEQ); } 194 {hyphen}r { return(F_REPLAY); } 195 {hyphen}lh { return(F_LIFETIME_HARD); } 196 {hyphen}ls { return(F_LIFETIME_SOFT); } 197 198 /* ... */ 199 any { return(ANY); } 200 {ws} { } 201 {nl} { lineno++; } 202 {comment} 203 {semi} { return(EOT); } 204 205 /* for address parameters: /prefix, [port] */ 206 {slash} { return SLASH; } 207 {blcl} { return BLCL; } 208 {elcl} { return ELCL; } 209 210 /* parameter */ 211 {decstring} { 212 char *bp; 213 214 yylval.ulnum = strtoul(yytext, &bp, 10); 215 return(DECSTRING); 216 } 217 218 {hexstring} { 219 yylval.val.buf = strdup(yytext + 2); 220 if (!yylval.val.buf) 221 yyfatal("insufficient memory"); 222 yylval.val.len = strlen(yylval.val.buf); 223 224 return(HEXSTRING); 225 } 226 227 {quotedstring} { 228 char *p = yytext; 229 while (*++p != '"') ; 230 *p = '\0'; 231 yytext++; 232 yylval.val.len = yyleng - 2; 233 yylval.val.buf = strdup(yytext); 234 if (!yylval.val.buf) 235 yyfatal("insufficient memory"); 236 237 return(QUOTEDSTRING); 238 } 239 240 [A-Za-z0-9:][A-Za-z0-9:%\.-]* { 241 yylval.val.len = yyleng; 242 yylval.val.buf = strdup(yytext); 243 if (!yylval.val.buf) 244 yyfatal("insufficient memory"); 245 return(STRING); 246 } 247 248 [0-9,]+ { 249 yylval.val.len = yyleng; 250 yylval.val.buf = strdup(yytext); 251 if (!yylval.val.buf) 252 yyfatal("insufficient memory"); 253 return(STRING); 254 } 255 256 . { 257 yyfatal("Syntax error"); 258 /*NOTREACHED*/ 259 } 260 261 %% 262 263 void 264 yyfatal(s) 265 const char *s; 266 { 267 yyerror(s); 268 exit(1); 269 } 270 271 void 272 yyerror(s) 273 const char *s; 274 { 275 printf("line %d: %s at [%s]\n", lineno, s, yytext); 276 } 277 278 int 279 parse(fp) 280 FILE **fp; 281 { 282 yyin = *fp; 283 284 parse_init(); 285 286 if (yyparse()) { 287 printf("parse failed, line %d.\n", lineno); 288 return(-1); 289 } 290 291 return(0); 292 } 293