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annotate libfdcore/fdd.l @ 918:46f9982b7d26

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Use logging routines for configuration file parsing (based on patch by Thomas)
author Sebastien Decugis <sdecugis@freediameter.net>
date Tue, 12 Feb 2013 14:57:32 +0100
parents 4a9f08d6b6ba
children e5a09fab5ef3 51c15f98a965
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1 /*********************************************************************************************************
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2 * Software License Agreement (BSD License) *
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3 * Author: Sebastien Decugis <sdecugis@freediameter.net> *
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4 * *
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5 * Copyright (c) 2011, WIDE Project and NICT *
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6 * All rights reserved. *
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7 * *
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8 * Redistribution and use of this software in source and binary forms, with or without modification, are *
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9 * permitted provided that the following conditions are met: *
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10 * *
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11 * * Redistributions of source code must retain the above *
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12 * copyright notice, this list of conditions and the *
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13 * following disclaimer. *
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14 * *
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15 * * Redistributions in binary form must reproduce the above *
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16 * copyright notice, this list of conditions and the *
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17 * following disclaimer in the documentation and/or other *
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18 * materials provided with the distribution. *
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19 * *
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20 * * Neither the name of the WIDE Project or NICT nor the *
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21 * names of its contributors may be used to endorse or *
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22 * promote products derived from this software without *
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23 * specific prior written permission of WIDE Project and *
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24 * NICT. *
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25 * *
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26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED *
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27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
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28 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR *
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29 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *
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30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS *
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31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR *
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32 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF *
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33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
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34 *********************************************************************************************************/
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35
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36 /* Lex configuration parser.
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37 *
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38 * This file defines the token for parsing the daemon's configuration file
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39 * Note that each extension has a separate independant configuration file.
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40 *
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41 * Note : This module is NOT thread-safe. All processing must be done from one thread only.
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42 */
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43 %{
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44 /* Include the daemon's header files */
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45 #include "fdcore-internal.h"
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46 /* Include yacc tokens definitions */
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47 #include "fdd.tab.h"
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48
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49 /* Update the column information */
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50 #ifdef DEBUG_LEX
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51 #define YY_USER_ACTION { \
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52 yylloc->first_column = yylloc->last_column + 1; \
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53 yylloc->last_column = yylloc->first_column + yyleng - 1; \
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54 TRACE_DEBUG_ERROR( \
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55 "(%d:%d-%d:%d) matched rule %d, length=%d, txt='%s'\n", \
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56 yylloc->first_line, yylloc->first_column, \
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57 yylloc->last_line, yylloc->last_column, \
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58 yy_act, yyleng, yytext); \
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59 }
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60 #else /* DEBUG_LEX */
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61 #define YY_USER_ACTION { \
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62 yylloc->first_column = yylloc->last_column + 1; \
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63 yylloc->last_column = yylloc->first_column + yyleng - 1; \
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64 }
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65 #endif
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66
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67 /* %option noinput ? */
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68 #define YY_NO_INPUT
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69 %}
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70
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71 %option bison-bridge bison-locations
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72 %option noyywrap
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73 %option nounput
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74
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75 /* Quoted string. Multilines do not match. */
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76 qstring \"[^\"\n]*\"
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77
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78 %%
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79
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80 <*>\n {
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81 /* Update the line count */
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82 yylloc->first_line++;
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83 yylloc->last_line++;
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84 yylloc->last_column=0;
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85 }
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86
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87 <*>([[:space:]]{-}[\n])+ ; /* Eat all spaces, not new lines */
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88 <*>#.*$ ; /* Eat all comments */
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89
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90 {qstring} {
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91 /* First copy the string without the quotes for use in the yacc parser */
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92 CHECK_MALLOC_DO( yylval->string = strdup(yytext+1), /* This allocates one useless tail char but... it's easier :D */
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93 return LEX_ERROR );/* on error, trig an error in yacc parser */
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94
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95 yylval->string[yyleng-2] = '\0';
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96
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97 /* the yacc parser will check the string is valid */
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98 return QSTRING;
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99 }
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100
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101 [[:digit:]]+ {
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102 /* Convert this to an integer value */
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103 int ret = sscanf(yytext, "%i", &yylval->integer);
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104 if (ret != 1) {
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105 /* No matching: an error occurred */
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106 TRACE_DEBUG_ERROR("Unable to convert the value '%s' to a valid number: %s\n", yytext, strerror(errno));
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107 return LEX_ERROR; /* trig an error in yacc parser */
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108 /* Maybe we could REJECT instead of failing here? */
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109 }
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110 return INTEGER;
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111 }
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112
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113 /* Full words tokens (keywords) */
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114 (?i:"Identity") { return IDENTITY; }
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115 (?i:"Realm") { return REALM; }
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116 (?i:"Port") { return PORT; }
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117 (?i:"SecPort") { return SECPORT; }
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118 (?i:"No_IPv6") { return NOIP6; }
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119 (?i:"No_IP") { return NOIP; }
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120 (?i:"No_TCP") { return NOTCP; }
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121 (?i:"No_SCTP") { return NOSCTP; }
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122 (?i:"Prefer_TCP") { return PREFERTCP; }
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123 (?i:"TLS_old_method") { return OLDTLS; }
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124 (?i:"SCTP_streams") { return SCTPSTREAMS; }
253
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125 (?i:"AppServThreads") { return APPSERVTHREADS;}
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126 (?i:"ListenOn") { return LISTENON; }
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127 (?i:"TcTimer") { return TCTIMER; }
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128 (?i:"TwTimer") { return TWTIMER; }
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129 (?i:"NoRelay") { return NORELAY; }
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130 (?i:"LoadExtension") { return LOADEXT; }
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131 (?i:"ConnectPeer") { return CONNPEER; }
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132 (?i:"ConnectTo") { return CONNTO; }
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133 (?i:"No_TLS") { return NOTLS; }
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134 (?i:"TLS_Cred") { return TLS_CRED; }
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135 (?i:"TLS_CA") { return TLS_CA; }
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136 (?i:"TLS_CRL") { return TLS_CRL; }
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137 (?i:"TLS_Prio") { return TLS_PRIO; }
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parents: 12
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138 (?i:"TLS_DH_bits") { return TLS_DH_BITS; }
578
7c9a00bfd115 Allow TLS Diffie-Hellmann parameters to be loaded from a file (ticket #17)
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139 (?i:"TLS_DH_file") { return TLS_DH_FILE; }
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140
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141
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142 /* Valid single characters for yyparse */
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143 <*>[=,:;{}] { return yytext[0]; }
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144
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145 /* Unrecognized token */
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146 <*>[[:alnum:]]+ | /* This rule is only useful to print a complete token in error messages */
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147 /* Unrecognized character */
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148 <*>. {
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149 TRACE_DEBUG_ERROR("Unrecognized text on line %d col %d: '%s'.\n", yylloc->first_line, yylloc->first_column, yytext);
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150 return LEX_ERROR;
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151 }
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152
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153 %%
"Welcome to our mercurial repository"