ipsec-tools/libipsec/policy_token.l

   1 /* $Id: policy_token.l,v 1.10.4.1 2005/05/07 14:30:38 manubsd 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 #include "y.tab.h"
  57 #define yylval __libipseclval   /* XXX */
  58
  59 int yylex (void);
  60 %}
  61
  62 %option noyywrap
  63 %option nounput
  64
  65 /* common section */
  66 nl              \n
  67 ws              [ \t]+
  68 digit           [0-9]
  69 hexdigit        [0-9A-Fa-f]
  70 special         [()+\|\?\*,]
  71 dot             \.
  72 comma           \,
  73 hyphen          \-
  74 colon           \:
  75 slash           \/
  76 bcl             \{
  77 ecl             \}
  78 blcl            \[
  79 elcl            \]
  80 percent         \%
  81 semi            \;
  82 plus    \+
  83 usec            {dot}{digit}{1,6}
  84 comment         \#.*
  85 ccomment        "/*"
  86 bracketstring   \<[^>]*\>
  87 quotedstring    \"[^"]*\"
  88 decstring       {digit}+
  89 hexpair         {hexdigit}{hexdigit}
  90 hexstring       0[xX]{hexdigit}+
  91 octetstring     {octet}({dot}{octet})+
  92 ipaddress       [a-zA-Z0-9:\._][a-zA-Z0-9:\._]*(%[a-zA-Z0-9]+)?
  93
  94 %%
  95
  96 in              { yylval.num = IPSEC_DIR_INBOUND; return(DIR); }
  97 out             { yylval.num = IPSEC_DIR_OUTBOUND; return(DIR); }
  98 fwd             {
  99 #ifdef HAVE_POLICY_FWD
 100                   yylval.num = IPSEC_DIR_FWD; return(DIR);
 101 #else
 102                   yylval.num = IPSEC_DIR_INBOUND; return(DIR);
 103 #endif
 104                 }
 105
 106 priority        { return(PRIORITY); }
 107 prio    { return(PRIORITY); }
 108 low     { yylval.num32 = PRIORITY_LOW; return(PRIO_BASE); }
 109 def { yylval.num32 = PRIORITY_DEFAULT; return(PRIO_BASE); }
 110 high    { yylval.num32 = PRIORITY_HIGH; return(PRIO_BASE); }
 111 {plus}  { return(PLUS); }
 112 {decstring}     {
 113                         yylval.val.len = strlen(yytext);
 114                         yylval.val.buf = yytext;
 115                         return(PRIO_OFFSET);
 116 }
 117
 118 discard         { yylval.num = IPSEC_POLICY_DISCARD; return(ACTION); }
 119 generate        { yylval.num = IPSEC_POLICY_GENERATE; return(ACTION); }
 120 none            { yylval.num = IPSEC_POLICY_NONE; return(ACTION); }
 121 ipsec           { yylval.num = IPSEC_POLICY_IPSEC; return(ACTION); }
 122 bypass          { yylval.num = IPSEC_POLICY_BYPASS; return(ACTION); }
 123 entrust         { yylval.num = IPSEC_POLICY_ENTRUST; return(ACTION); }
 124
 125 esp             { yylval.num = IPPROTO_ESP; return(PROTOCOL); }
 126 ah              { yylval.num = IPPROTO_AH; return(PROTOCOL); }
 127 ipcomp          { yylval.num = IPPROTO_IPCOMP; return(PROTOCOL); }
 128
 129 transport       { yylval.num = IPSEC_MODE_TRANSPORT; return(MODE); }
 130 tunnel          { yylval.num = IPSEC_MODE_TUNNEL; return(MODE); }
 131
 132 me              { return(ME); }
 133 any             { return(ANY); }
 134
 135 default         { yylval.num = IPSEC_LEVEL_DEFAULT; return(LEVEL); }
 136 use             { yylval.num = IPSEC_LEVEL_USE; return(LEVEL); }
 137 require         { yylval.num = IPSEC_LEVEL_REQUIRE; return(LEVEL); }
 138 unique{colon}{decstring} {
 139                         yylval.val.len = strlen(yytext + 7);
 140                         yylval.val.buf = yytext + 7;
 141                         return(LEVEL_SPECIFY);
 142                 }
 143 unique          { yylval.num = IPSEC_LEVEL_UNIQUE; return(LEVEL); }
 144 {slash}         { return(SLASH); }
 145
 146 {ipaddress}     {
 147                         yylval.val.len = strlen(yytext);
 148                         yylval.val.buf = yytext;
 149                         return(IPADDRESS);
 150                 }
 151
 152 {hyphen}        { return(HYPHEN); }
 153
 154 {blcl}{decstring}{elcl} {
 155                         /* Remove leading '[' and trailing ']' */
 156                         yylval.val.buf = yytext + 1;
 157                         yylval.val.len = strlen(yytext) - 2;
 158
 159                         return(PORT);
 160                 }
 161
 162 {ws}            { ; }
 163 {nl}            { ; }
 164
 165 %%
 166
 167 void __policy__strbuffer__init__ (char *);
 168 void __policy__strbuffer__free__ (void);
 169
 170 static YY_BUFFER_STATE strbuffer;
 171
 172 void
 173 __policy__strbuffer__init__(msg)
 174         char *msg;
 175 {
 176         if (YY_CURRENT_BUFFER)
 177                 yy_delete_buffer(YY_CURRENT_BUFFER);
 178         strbuffer = (YY_BUFFER_STATE)yy_scan_string(msg);
 179         yy_switch_to_buffer(strbuffer);
 180
 181         return;
 182 }
 183
 184 void
 185 __policy__strbuffer__free__()
 186 {
 187         yy_delete_buffer(strbuffer);
 188
 189         return;
 190 }