userapps/opensource/ipsec-tools/src/libipsec/policy_token.l

   1 /* $Id: policy_token.l,v 1.10 2004/11/14 20:15:43 monas Exp $ */
   2
   3 /*
   4  * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the project nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 %{
  33 #ifdef HAVE_CONFIG_H
  34 #include "config.h"
  35 #endif
  36
  37 #include <sys/types.h>
  38 #include <sys/param.h>
  39 #include <sys/socket.h>
  40 #include <net/pfkeyv2.h>
  41 #include <netinet/in.h>
  42 #ifdef HAVE_NETINET6_IPSEC
  43 #  include <netinet6/ipsec.h>
  44 #else
  45 #  include <netinet/ipsec.h>
  46 #endif
  47
  48 #include <stdlib.h>
  49 #include <limits.h>
  50 #include <string.h>
  51 #include <unistd.h>
  52 #include <errno.h>
  53
  54 #include "libpfkey.h"
  55
  56 #if !defined(__NetBSD__) && !defined(__FreeBSD__) && !defined(__linux__)
  57 #include "y.tab.h"
  58 #else
  59 #include "policy_parse.h"
  60 #endif
  61 #define yylval __libipseclval   /* XXX */
  62
  63 int yylex __P((void));
  64 %}
  65
  66 %option noyywrap
  67 %option nounput
  68
  69 /* common section */
  70 nl              \n
  71 ws              [ \t]+
  72 digit           [0-9]
  73 hexdigit        [0-9A-Fa-f]
  74 special         [()+\|\?\*,]
  75 dot             \.
  76 comma           \,
  77 hyphen          \-
  78 colon           \:
  79 slash           \/
  80 bcl             \{
  81 ecl             \}
  82 blcl            \[
  83 elcl            \]
  84 percent         \%
  85 semi            \;
  86 plus    \+
  87 usec            {dot}{digit}{1,6}
  88 comment         \#.*
  89 ccomment        "/*"
  90 bracketstring   \<[^>]*\>
  91 quotedstring    \"[^"]*\"
  92 decstring       {digit}+
  93 hexpair         {hexdigit}{hexdigit}
  94 hexstring       0[xX]{hexdigit}+
  95 octetstring     {octet}({dot}{octet})+
  96 ipaddress       [a-zA-Z0-9:\._][a-zA-Z0-9:\._]*(%[a-zA-Z0-9]+)?
  97
  98 %%
  99
 100 in              { yylval.num = IPSEC_DIR_INBOUND; return(DIR); }
 101 out             { yylval.num = IPSEC_DIR_OUTBOUND; return(DIR); }
 102 fwd             {
 103 #ifdef HAVE_POLICY_FWD
 104                   yylval.num = IPSEC_DIR_FWD; return(DIR);
 105 #else
 106                   yylval.num = IPSEC_DIR_INBOUND; return(DIR);
 107 #endif
 108                 }
 109
 110 priority        { return(PRIORITY); }
 111 prio    { return(PRIORITY); }
 112 low     { yylval.num32 = PRIORITY_LOW; return(PRIO_BASE); }
 113 def { yylval.num32 = PRIORITY_DEFAULT; return(PRIO_BASE); }
 114 high    { yylval.num32 = PRIORITY_HIGH; return(PRIO_BASE); }
 115 {plus}  { return(PLUS); }
 116 {decstring}     {
 117                         yylval.val.len = strlen(yytext);
 118                         yylval.val.buf = yytext;
 119                         return(PRIO_OFFSET);
 120 }
 121
 122 discard         { yylval.num = IPSEC_POLICY_DISCARD; return(ACTION); }
 123 none            { yylval.num = IPSEC_POLICY_NONE; return(ACTION); }
 124 ipsec           { yylval.num = IPSEC_POLICY_IPSEC; return(ACTION); }
 125 bypass          { yylval.num = IPSEC_POLICY_BYPASS; return(ACTION); }
 126 entrust         { yylval.num = IPSEC_POLICY_ENTRUST; return(ACTION); }
 127
 128 esp             { yylval.num = IPPROTO_ESP; return(PROTOCOL); }
 129 ah              { yylval.num = IPPROTO_AH; return(PROTOCOL); }
 130 ipcomp          { yylval.num = IPPROTO_IPCOMP; return(PROTOCOL); }
 131
 132 transport       { yylval.num = IPSEC_MODE_TRANSPORT; return(MODE); }
 133 tunnel          { yylval.num = IPSEC_MODE_TUNNEL; return(MODE); }
 134
 135 me              { return(ME); }
 136 any             { return(ANY); }
 137
 138 default         { yylval.num = IPSEC_LEVEL_DEFAULT; return(LEVEL); }
 139 use             { yylval.num = IPSEC_LEVEL_USE; return(LEVEL); }
 140 require         { yylval.num = IPSEC_LEVEL_REQUIRE; return(LEVEL); }
 141 unique{colon}{decstring} {
 142                         yylval.val.len = strlen(yytext + 7);
 143                         yylval.val.buf = yytext + 7;
 144                         return(LEVEL_SPECIFY);
 145                 }
 146 unique          { yylval.num = IPSEC_LEVEL_UNIQUE; return(LEVEL); }
 147 {slash}         { return(SLASH); }
 148
 149 {ipaddress}     {
 150                         yylval.val.len = strlen(yytext);
 151                         yylval.val.buf = yytext;
 152                         return(IPADDRESS);
 153                 }
 154
 155 {hyphen}        { return(HYPHEN); }
 156
 157 {ws}            { ; }
 158 {nl}            { ; }
 159
 160 %%
 161
 162 void __policy__strbuffer__init__ __P((char *));
 163 void __policy__strbuffer__free__ __P((void));
 164
 165 static YY_BUFFER_STATE strbuffer;
 166
 167 void
 168 __policy__strbuffer__init__(msg)
 169         char *msg;
 170 {
 171         if (YY_CURRENT_BUFFER)
 172                 yy_delete_buffer(YY_CURRENT_BUFFER);
 173         strbuffer = (YY_BUFFER_STATE)yy_scan_string(msg);
 174         yy_switch_to_buffer(strbuffer);
 175
 176         return;
 177 }
 178
 179 void
 180 __policy__strbuffer__free__()
 181 {
 182         yy_delete_buffer(strbuffer);
 183
 184         return;
 185 }