1 /* $FreeBSD$ */ 2 /* $KAME: token.l,v 1.21 2001/05/18 05:35:01 sakane Exp $ */ 3 4 /* 5 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the project nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 %{ 34 #include <sys/types.h> 35 #include <sys/param.h> 36 #include <sys/socket.h> 37 #include <net/route.h> 38 #include <net/pfkeyv2.h> 39 #include <netkey/keydb.h> 40 #include <netkey/key_debug.h> 41 #include <netinet/in.h> 42 #include <netinet6/ipsec.h> 43 44 #include <stdlib.h> 45 #include <limits.h> 46 #include <string.h> 47 #include <unistd.h> 48 #include <errno.h> 49 #include "vchar.h" 50 #ifdef __NetBSD__ 51 #include "parse.h" 52 #else 53 #include "y.tab.h" 54 #endif 55 56 #define DECHO \ 57 if (f_debug) {printf("<%d>", yy_start); ECHO ; printf("\n"); } 58 59 #define CMDARG \ 60 { \ 61 char *__buf__ = strdup(yytext), *__p__; \ 62 for (__p__ = __buf__; *__p__ != NULL; __p__++) \ 63 if (*__p__ == '\n' || *__p__ == '\t') \ 64 *__p__ = ' '; \ 65 strcat(cmdarg, __buf__); \ 66 free(__buf__); \ 67 } 68 69 #define PREPROC DECHO CMDARG 70 71 int lineno = 1; 72 char cmdarg[8192]; /* XXX: BUFSIZ is the better ? */ 73 74 extern u_char m_buf[BUFSIZ]; 75 extern u_int m_len; 76 extern int f_debug; 77 78 int yylex __P((void)); 79 void yyfatal __P((const char *s)); 80 void yyerror __P((const char *s)); 81 extern void parse_init __P((void)); 82 int parse __P((FILE **)); 83 int yyparse __P((void)); 84 85 %} 86 87 /* common section */ 88 nl \n 89 ws [ \t]+ 90 digit [0-9] 91 letter [0-9A-Za-z] 92 hexdigit [0-9A-Fa-f] 93 /*octet (([01]?{digit}?{digit})|((2([0-4]{digit}))|(25[0-5])))*/ 94 special [()+\|\?\*,] 95 dot \. 96 comma \, 97 hyphen \- 98 colon \: 99 slash \/ 100 bcl \{ 101 ecl \} 102 blcl \[ 103 elcl \] 104 percent \% 105 semi \; 106 usec {dot}{digit}{1,6} 107 comment \#.* 108 ccomment "/*" 109 bracketstring \<[^>]*\> 110 quotedstring \"[^"]*\" 111 decstring {digit}+ 112 hexpair {hexdigit}{hexdigit} 113 hexstring 0[xX]{hexdigit}+ 114 octetstring {octet}({dot}{octet})+ 115 ipaddress [a-fA-F0-9:]([a-fA-F0-9:\.]*|[a-fA-F0-9:\.]*%[a-zA-Z0-9]*) 116 ipaddrmask {slash}{digit}{1,3} 117 ipaddrport {blcl}{decstring}{elcl} 118 keyword {letter}{letter}+ 119 name {letter}(({letter}|{digit}|{hyphen})*({letter}|{digit}))* 120 hostname {name}(({dot}{name})+{dot}?)? 121 122 %s S_PL 123 124 %% 125 126 add { PREPROC; return(ADD); } 127 delete { PREPROC; return(DELETE); } 128 deleteall { PREPROC; return(DELETEALL); } 129 get { PREPROC; return(GET); } 130 flush { PREPROC; return(FLUSH); } 131 dump { PREPROC; return(DUMP); } 132 133 /* for management SPD */ 134 spdadd { PREPROC; return(SPDADD); } 135 spddelete { PREPROC; return(SPDDELETE); } 136 spddump { PREPROC; return(SPDDUMP); } 137 spdflush { PREPROC; return(SPDFLUSH); } 138 {hyphen}P { BEGIN S_PL; PREPROC; return(F_POLICY); } 139 <S_PL>[a-zA-Z0-9:\.\-_/ \n\t][a-zA-Z0-9:\.\-_/ \n\t]* { 140 yymore(); 141 142 /* count up for nl */ 143 { 144 char *p; 145 for (p = yytext; *p != NULL; p++) 146 if (*p == '\n') 147 lineno++; 148 } 149 150 yylval.val.len = strlen(yytext); 151 yylval.val.buf = strdup(yytext); 152 153 return(PL_REQUESTS); 154 } 155 <S_PL>{semi} { PREPROC; BEGIN INITIAL; return(EOT); } 156 157 /* security protocols */ 158 ah { PREPROC; yylval.num = 0; return(PR_AH); } 159 esp { PREPROC; yylval.num = 0; return(PR_ESP); } 160 ah-old { PREPROC; yylval.num = 1; return(PR_AH); } 161 esp-old { PREPROC; yylval.num = 1; return(PR_ESP); } 162 ipcomp { PREPROC; yylval.num = 0; return(PR_IPCOMP); } 163 164 /* authentication alogorithm */ 165 {hyphen}A { PREPROC; return(F_AUTH); } 166 hmac-md5 { PREPROC; yylval.num = SADB_AALG_MD5HMAC; return(ALG_AUTH); } 167 hmac-sha1 { PREPROC; yylval.num = SADB_AALG_SHA1HMAC; return(ALG_AUTH); } 168 keyed-md5 { PREPROC; yylval.num = SADB_X_AALG_MD5; return(ALG_AUTH); } 169 keyed-sha1 { PREPROC; yylval.num = SADB_X_AALG_SHA; return(ALG_AUTH); } 170 hmac-sha2-256 { PREPROC; yylval.num = SADB_X_AALG_SHA2_256; return(ALG_AUTH); } 171 hmac-sha2-384 { PREPROC; yylval.num = SADB_X_AALG_SHA2_384; return(ALG_AUTH); } 172 hmac-sha2-512 { PREPROC; yylval.num = SADB_X_AALG_SHA2_512; return(ALG_AUTH); } 173 hmac-ripemd160 { PREPROC; yylval.num = SADB_X_AALG_RIPEMD160HMAC; return(ALG_AUTH); } 174 aes-xcbc-mac { PREPROC; yylval.num = SADB_X_AALG_AES_XCBC_MAC; return(ALG_AUTH); } 175 null { PREPROC; yylval.num = SADB_X_AALG_NULL; return(ALG_AUTH); } 176 177 /* encryption alogorithm */ 178 {hyphen}E { PREPROC; return(F_ENC); } 179 des-cbc { PREPROC; yylval.num = SADB_EALG_DESCBC; return(ALG_ENC); } 180 3des-cbc { PREPROC; yylval.num = SADB_EALG_3DESCBC; return(ALG_ENC); } 181 simple { PREPROC; yylval.num = SADB_EALG_NULL; return(ALG_ENC); } 182 blowfish-cbc { PREPROC; yylval.num = SADB_X_EALG_BLOWFISHCBC; return(ALG_ENC); } 183 cast128-cbc { PREPROC; yylval.num = SADB_X_EALG_CAST128CBC; return(ALG_ENC); } 184 des-deriv { PREPROC; yylval.num = SADB_EALG_DESCBC; return(ALG_ENC_DESDERIV); } 185 des-32iv { PREPROC; yylval.num = SADB_EALG_DESCBC; return(ALG_ENC_DES32IV); } 186 rijndael-cbc { PREPROC; yylval.num = SADB_X_EALG_RIJNDAELCBC; return(ALG_ENC); } 187 188 /* compression algorithms */ 189 {hyphen}C { PREPROC; return(F_COMP); } 190 oui { PREPROC; yylval.num = SADB_X_CALG_OUI; return(ALG_COMP); } 191 deflate { PREPROC; yylval.num = SADB_X_CALG_DEFLATE; return(ALG_COMP); } 192 lzs { PREPROC; yylval.num = SADB_X_CALG_LZS; return(ALG_COMP); } 193 {hyphen}R { PREPROC; return(F_RAWCPI); } 194 195 /* extension */ 196 {hyphen}m { PREPROC; return(F_MODE); } 197 transport { PREPROC; yylval.num = IPSEC_MODE_TRANSPORT; return(MODE); } 198 tunnel { PREPROC; yylval.num = IPSEC_MODE_TUNNEL; return(MODE); } 199 {hyphen}u { PREPROC; return(F_REQID); } 200 {hyphen}f { PREPROC; return(F_EXT); } 201 random-pad { PREPROC; yylval.num = SADB_X_EXT_PRAND; return(EXTENSION); } 202 seq-pad { PREPROC; yylval.num = SADB_X_EXT_PSEQ; return(EXTENSION); } 203 zero-pad { PREPROC; yylval.num = SADB_X_EXT_PZERO; return(EXTENSION); } 204 nocyclic-seq { PREPROC; return(NOCYCLICSEQ); } 205 {hyphen}r { PREPROC; return(F_REPLAY); } 206 {hyphen}lh { PREPROC; return(F_LIFETIME_HARD); } 207 {hyphen}ls { PREPROC; return(F_LIFETIME_SOFT); } 208 209 /* ... */ 210 any { PREPROC; return(ANY); } 211 {ws} { PREPROC; } 212 {nl} { lineno++; } 213 {comment} 214 {semi} { PREPROC; return(EOT); } 215 216 /* parameter */ 217 {decstring} { 218 char *bp; 219 220 PREPROC; 221 yylval.num = strtoul(yytext, &bp, 10); 222 return(DECSTRING); 223 } 224 225 {ipaddress} { 226 PREPROC; 227 228 yylval.val.len = yyleng; 229 yylval.val.buf = strdup(yytext); 230 231 return(ADDRESS); 232 } 233 234 {ipaddrmask} { 235 PREPROC; 236 yytext++; 237 yylval.num = atoi(yytext); 238 return(PREFIX); 239 } 240 241 {ipaddrport} { 242 char *p = yytext; 243 PREPROC; 244 while (*++p != ']') ; 245 *p = NULL; 246 yytext++; 247 yylval.num = atoi(yytext); 248 return(PORT); 249 } 250 251 {blcl}any{elcl} { 252 PREPROC; 253 return(PORTANY); 254 } 255 256 {hexstring} { 257 int len = yyleng - 2; /* (str - "0x") */ 258 PREPROC; 259 yylval.val.len = (len & 1) + (len / 2); 260 /* fixed string if length is odd. */ 261 if (len & 1) { 262 yytext[1] = '0'; 263 yylval.val.buf = strdup(yytext + 1); 264 } else 265 yylval.val.buf = strdup(yytext + 2); 266 267 return(HEXSTRING); 268 } 269 270 {quotedstring} { 271 char *p = yytext; 272 PREPROC; 273 while (*++p != '"') ; 274 *p = NULL; 275 yytext++; 276 yylval.val.len = yyleng - 2; 277 yylval.val.buf = strdup(yytext); 278 279 return(QUOTEDSTRING); 280 } 281 282 [a-z0-9.\-]* { 283 yylval.val.len = yyleng; 284 yylval.val.buf = strdup(yytext); 285 return(STRING); 286 } 287 288 . { 289 yyfatal("Syntax error"); 290 /*NOTREACHED*/ 291 } 292 293 %% 294 295 void 296 yyfatal(s) 297 const char *s; 298 { 299 yyerror(s); 300 exit(1); 301 } 302 303 void 304 yyerror(s) 305 const char *s; 306 { 307 printf("line %d: %s at [%s]\n", lineno, s, yytext); 308 } 309 310 int 311 parse(fp) 312 FILE **fp; 313 { 314 yyin = *fp; 315 316 parse_init(); 317 318 if (yyparse()) { 319 printf("parse failed, line %d.\n", lineno); 320 return(-1); 321 } 322 323 return(0); 324 } 325