1 | /* $NetBSD: policy_token.l,v 1.7 2007/07/18 12:07:50 vanhu Exp $ */ |
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2 | |
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3 | /* Id: policy_token.l,v 1.12 2005/05/05 12:32:18 manubsd Exp */ |
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4 | |
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5 | /* |
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6 | * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project. |
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7 | * All rights reserved. |
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8 | * |
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9 | * Redistribution and use in source and binary forms, with or without |
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10 | * modification, are permitted provided that the following conditions |
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11 | * are met: |
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12 | * 1. Redistributions of source code must retain the above copyright |
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13 | * notice, this list of conditions and the following disclaimer. |
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14 | * 2. Redistributions in binary form must reproduce the above copyright |
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15 | * notice, this list of conditions and the following disclaimer in the |
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16 | * documentation and/or other materials provided with the distribution. |
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17 | * 3. Neither the name of the project nor the names of its contributors |
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18 | * may be used to endorse or promote products derived from this software |
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19 | * without specific prior written permission. |
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20 | * |
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21 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
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22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
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25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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31 | * SUCH DAMAGE. |
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32 | */ |
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33 | |
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34 | %{ |
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35 | #ifdef HAVE_CONFIG_H |
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36 | #include "config.h" |
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37 | #endif |
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38 | |
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39 | #include <sys/types.h> |
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40 | #include <sys/param.h> |
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41 | #include <sys/socket.h> |
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42 | #include <net/pfkeyv2.h> |
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43 | #include <netinet/in.h> |
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44 | #include PATH_IPSEC_H |
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45 | |
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46 | #include <stdlib.h> |
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47 | #include <limits.h> |
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48 | #include <string.h> |
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49 | #include <unistd.h> |
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50 | #include <errno.h> |
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51 | |
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52 | #include "libpfkey.h" |
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53 | |
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54 | #if !defined(__NetBSD__) && !defined(__FreeBSD__) && !defined(__linux__) && \ |
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55 | !defined(__APPLE__) && !defined(__MACH__) |
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56 | #include "y.tab.h" |
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57 | #else |
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58 | #include "policy_parse.h" |
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59 | #endif |
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60 | #define yylval __libipseclval /* XXX */ |
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61 | |
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62 | int yylex __P((void)); |
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63 | %} |
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64 | |
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65 | %option noyywrap |
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66 | %option nounput |
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67 | |
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68 | /* common section */ |
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69 | nl \n |
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70 | ws [ \t]+ |
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71 | digit [0-9] |
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72 | hexdigit [0-9A-Fa-f] |
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73 | special [()+\|\?\*,] |
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74 | dot \. |
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75 | comma \, |
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76 | hyphen \- |
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77 | colon \: |
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78 | slash \/ |
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79 | bcl \{ |
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80 | ecl \} |
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81 | blcl \[ |
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82 | elcl \] |
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83 | percent \% |
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84 | semi \; |
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85 | plus \+ |
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86 | usec {dot}{digit}{1,6} |
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87 | comment \#.* |
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88 | ccomment "/*" |
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89 | bracketstring \<[^>]*\> |
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90 | quotedstring \"[^"]*\" |
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91 | decstring {digit}+ |
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92 | hexpair {hexdigit}{hexdigit} |
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93 | hexstring 0[xX]{hexdigit}+ |
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94 | octetstring {octet}({dot}{octet})+ |
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95 | ipaddress [a-zA-Z0-9:\._][a-zA-Z0-9:\._]*(%[a-zA-Z0-9]+)? |
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96 | |
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97 | %% |
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98 | |
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99 | in { yylval.num = IPSEC_DIR_INBOUND; return(DIR); } |
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100 | out { yylval.num = IPSEC_DIR_OUTBOUND; return(DIR); } |
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101 | fwd { |
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102 | #ifdef HAVE_POLICY_FWD |
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103 | yylval.num = IPSEC_DIR_FWD; return(DIR); |
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104 | #else |
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105 | yylval.num = IPSEC_DIR_INBOUND; return(DIR); |
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106 | #endif |
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107 | } |
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108 | |
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109 | priority { return(PRIORITY); } |
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110 | prio { return(PRIORITY); } |
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111 | low { yylval.num32 = PRIORITY_LOW; return(PRIO_BASE); } |
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112 | def { yylval.num32 = PRIORITY_DEFAULT; return(PRIO_BASE); } |
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113 | high { yylval.num32 = PRIORITY_HIGH; return(PRIO_BASE); } |
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114 | {plus} { return(PLUS); } |
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115 | {decstring} { |
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116 | yylval.val.len = strlen(yytext); |
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117 | yylval.val.buf = yytext; |
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118 | return(PRIO_OFFSET); |
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119 | } |
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120 | |
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121 | discard { yylval.num = IPSEC_POLICY_DISCARD; return(ACTION); } |
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122 | none { yylval.num = IPSEC_POLICY_NONE; return(ACTION); } |
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123 | ipsec { yylval.num = IPSEC_POLICY_IPSEC; return(ACTION); } |
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124 | bypass { yylval.num = IPSEC_POLICY_BYPASS; return(ACTION); } |
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125 | entrust { yylval.num = IPSEC_POLICY_ENTRUST; return(ACTION); } |
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126 | |
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127 | esp { yylval.num = IPPROTO_ESP; return(PROTOCOL); } |
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128 | ah { yylval.num = IPPROTO_AH; return(PROTOCOL); } |
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129 | ipcomp { yylval.num = IPPROTO_IPCOMP; return(PROTOCOL); } |
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130 | |
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131 | transport { yylval.num = IPSEC_MODE_TRANSPORT; return(MODE); } |
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132 | tunnel { yylval.num = IPSEC_MODE_TUNNEL; return(MODE); } |
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133 | |
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134 | me { return(ME); } |
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135 | any { return(ANY); } |
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136 | |
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137 | default { yylval.num = IPSEC_LEVEL_DEFAULT; return(LEVEL); } |
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138 | use { yylval.num = IPSEC_LEVEL_USE; return(LEVEL); } |
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139 | require { yylval.num = IPSEC_LEVEL_REQUIRE; return(LEVEL); } |
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140 | unique{colon}{decstring} { |
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141 | yylval.val.len = strlen(yytext + 7); |
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142 | yylval.val.buf = yytext + 7; |
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143 | return(LEVEL_SPECIFY); |
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144 | } |
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145 | unique { yylval.num = IPSEC_LEVEL_UNIQUE; return(LEVEL); } |
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146 | {slash} { return(SLASH); } |
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147 | |
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148 | {ipaddress} { |
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149 | yylval.val.len = strlen(yytext); |
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150 | yylval.val.buf = yytext; |
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151 | return(IPADDRESS); |
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152 | } |
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153 | |
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154 | {hyphen} { return(HYPHEN); } |
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155 | |
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156 | {blcl}{decstring}{elcl} { |
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157 | /* Remove leading '[' and trailing ']' */ |
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158 | yylval.val.buf = yytext + 1; |
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159 | yylval.val.len = strlen(yytext) - 2; |
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160 | |
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161 | return(PORT); |
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162 | } |
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163 | |
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164 | {ws} { ; } |
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165 | {nl} { ; } |
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166 | |
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167 | %% |
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168 | |
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169 | void __policy__strbuffer__init__ __P((char *)); |
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170 | void __policy__strbuffer__free__ __P((void)); |
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171 | |
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172 | static YY_BUFFER_STATE strbuffer; |
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173 | |
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174 | void |
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175 | __policy__strbuffer__init__(msg) |
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176 | char *msg; |
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177 | { |
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178 | if (YY_CURRENT_BUFFER) |
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179 | yy_delete_buffer(YY_CURRENT_BUFFER); |
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180 | strbuffer = (YY_BUFFER_STATE)yy_scan_string(msg); |
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181 | yy_switch_to_buffer(strbuffer); |
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182 | |
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183 | return; |
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184 | } |
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185 | |
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186 | void |
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187 | __policy__strbuffer__free__() |
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188 | { |
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189 | yy_delete_buffer(strbuffer); |
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190 | |
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191 | return; |
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192 | } |
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