Mercurial > hg > freeDiameter
annotate extensions/rt_ereg/rtereg_conf.y @ 1554:566bb46cc73f
Updated copyright information
| author | Sebastien Decugis <sdecugis@freediameter.net> |
|---|---|
| date | Tue, 06 Oct 2020 21:34:53 +0800 |
| parents | d70f5f6cb306 |
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| rev | line source |
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| 525 | 1 /********************************************************************************************************* |
| 2 * Software License Agreement (BSD License) * | |
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3 * Author: Sebastien Decugis <sdecugis@freediameter.net> * |
| 525 | 4 * * |
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5 * Copyright (c) 2019, WIDE Project and NICT * |
| 525 | 6 * All rights reserved. * |
| 7 * * | |
| 8 * Redistribution and use of this software in source and binary forms, with or without modification, are * | |
| 9 * permitted provided that the following conditions are met: * | |
| 10 * * | |
| 11 * * Redistributions of source code must retain the above * | |
| 12 * copyright notice, this list of conditions and the * | |
| 13 * following disclaimer. * | |
| 14 * * | |
| 15 * * Redistributions in binary form must reproduce the above * | |
| 16 * copyright notice, this list of conditions and the * | |
| 17 * following disclaimer in the documentation and/or other * | |
| 18 * materials provided with the distribution. * | |
| 19 * * | |
| 20 * * Neither the name of the WIDE Project or NICT nor the * | |
| 21 * names of its contributors may be used to endorse or * | |
| 22 * promote products derived from this software without * | |
| 23 * specific prior written permission of WIDE Project and * | |
| 24 * NICT. * | |
| 25 * * | |
| 26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED * | |
| 27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * | |
| 28 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR * | |
| 29 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * | |
| 30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * | |
| 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR * | |
| 32 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * | |
| 33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * | |
| 34 *********************************************************************************************************/ | |
| 35 | |
| 36 /* Yacc extension's configuration parser. | |
| 37 */ | |
| 38 | |
| 39 /* For development only : */ | |
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40 %debug |
| 525 | 41 %error-verbose |
| 42 | |
| 43 /* The parser receives the configuration file filename as parameter */ | |
| 44 %parse-param {char * conffile} | |
| 45 | |
| 46 /* Keep track of location */ | |
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47 %locations |
| 525 | 48 %pure-parser |
| 49 | |
| 50 %{ | |
| 51 #include "rtereg.h" | |
| 52 #include "rtereg_conf.tab.h" /* bison is not smart enough to define the YYLTYPE before including this code, so... */ | |
| 53 | |
| 54 /* Forward declaration */ | |
| 55 int yyparse(char * conffile); | |
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56 void rtereg_confrestart(FILE *input_file); |
| 525 | 57 |
| 58 /* Parse the configuration file */ | |
| 59 int rtereg_conf_handle(char * conffile) | |
| 60 { | |
| 61 extern FILE * rtereg_confin; | |
| 62 int ret; | |
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63 |
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64 LOG_D("[rt_ereg] parsing configuration file '%s'", conffile); |
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65 |
| 525 | 66 rtereg_confin = fopen(conffile, "r"); |
| 67 if (rtereg_confin == NULL) { | |
| 68 ret = errno; | |
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69 fd_log_debug("Unable to open extension configuration file %s for reading: %s", conffile, strerror(ret)); |
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70 LOG_E("[rt_ereg] error occurred, message logged -- configuration file."); |
| 525 | 71 return ret; |
| 72 } | |
| 73 | |
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74 rtereg_confrestart(rtereg_confin); |
| 525 | 75 ret = yyparse(conffile); |
| 76 | |
| 77 fclose(rtereg_confin); | |
| 78 | |
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79 if (rtereg_conf[rtereg_conf_size-1].finished == 0) { |
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80 LOG_E("[rt_ereg] configuration invalid, AVP ended without OCTETSTRING AVP"); |
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81 return EINVAL; |
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82 } |
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83 |
| 525 | 84 if (ret != 0) { |
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85 LOG_E("[rt_ereg] unable to parse the configuration file."); |
| 525 | 86 return EINVAL; |
| 87 } else { | |
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88 int i, sum = 0; |
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89 for (i=0; i<rtereg_conf_size; i++) { |
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90 sum += rtereg_conf[i].rules_nb; |
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91 } |
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92 LOG_D("[rt-ereg] Added %d rules successfully.", sum); |
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93 } |
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94 |
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95 return 0; |
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96 } |
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97 |
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98 int avp_add(const char *name) |
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99 { |
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100 void *ret; |
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101 int level; |
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102 |
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103 if (rtereg_conf[rtereg_conf_size-1].finished) { |
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104 if ((ret = realloc(rtereg_conf, sizeof(*rtereg_conf)*(rtereg_conf_size+1))) == NULL) { |
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105 LOG_E("[rt_ereg] realloc failed"); |
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106 return -1; |
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107 } |
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108 rtereg_conf_size++; |
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109 rtereg_conf = ret; |
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110 memset(&rtereg_conf[rtereg_conf_size-1], 0, sizeof(*rtereg_conf)); |
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111 LOG_D("[rt_ereg] New AVP group found starting with %s", name); |
| 525 | 112 } |
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113 level = rtereg_conf[rtereg_conf_size-1].level + 1; |
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114 |
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115 if ((ret = realloc(rtereg_conf[rtereg_conf_size-1].avps, sizeof(*rtereg_conf[rtereg_conf_size-1].avps)*level)) == NULL) { |
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116 LOG_E("[rt_ereg] realloc failed"); |
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117 return -1; |
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118 } |
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119 rtereg_conf[rtereg_conf_size-1].avps = ret; |
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120 |
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121 CHECK_FCT_DO( fd_dict_search ( fd_g_config->cnf_dict, DICT_AVP, AVP_BY_NAME_ALL_VENDORS, name, &rtereg_conf[rtereg_conf_size-1].avps[level-1], ENOENT ), |
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122 { |
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123 LOG_E("[rt_ereg] Unable to find '%s' AVP in the loaded dictionaries.", name); |
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124 return -1; |
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125 } ); |
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126 |
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127 /* Now check the type */ |
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128 { |
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129 struct dict_avp_data data; |
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130 CHECK_FCT( fd_dict_getval( rtereg_conf[rtereg_conf_size-1].avps[level-1], &data) ); |
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131 if (data.avp_basetype == AVP_TYPE_OCTETSTRING) { |
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132 rtereg_conf[rtereg_conf_size-1].finished = 1; |
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133 } else if (data.avp_basetype != AVP_TYPE_GROUPED) { |
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134 LOG_E("[rt_ereg] '%s' AVP is not an OCTETSTRING nor GROUPED AVP (%d).", name, data.avp_basetype); |
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135 return -1; |
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136 } |
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137 } |
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138 rtereg_conf[rtereg_conf_size-1].level = level; |
| 525 | 139 return 0; |
| 140 } | |
| 141 | |
| 142 /* The Lex parser prototype */ | |
| 143 int rtereg_conflex(YYSTYPE *lvalp, YYLTYPE *llocp); | |
| 144 | |
| 145 /* Function to report the errors */ | |
| 146 void yyerror (YYLTYPE *ploc, char * conffile, char const *s) | |
| 147 { | |
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148 LOG_E("[rt_ereg] error in configuration parsing"); |
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149 |
| 525 | 150 if (ploc->first_line != ploc->last_line) |
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151 fd_log_debug("%s:%d.%d-%d.%d : %s", conffile, ploc->first_line, ploc->first_column, ploc->last_line, ploc->last_column, s); |
| 525 | 152 else if (ploc->first_column != ploc->last_column) |
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153 fd_log_debug("%s:%d.%d-%d : %s", conffile, ploc->first_line, ploc->first_column, ploc->last_column, s); |
| 525 | 154 else |
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155 fd_log_debug("%s:%d.%d : %s", conffile, ploc->first_line, ploc->first_column, s); |
| 525 | 156 } |
| 157 | |
| 158 %} | |
| 159 | |
| 160 /* Values returned by lex for token */ | |
| 161 %union { | |
| 162 char *string; /* The string is allocated by strdup in lex.*/ | |
| 163 int integer; | |
| 164 } | |
| 165 | |
| 166 /* In case of error in the lexical analysis */ | |
| 167 %token LEX_ERROR | |
| 168 | |
| 169 /* A (de)quoted string (malloc'd in lex parser; it must be freed after use) */ | |
| 170 %token <string> QSTRING | |
| 171 %token <integer> INTEGER | |
| 172 | |
| 173 /* Tokens */ | |
| 174 %token AVP | |
| 175 | |
| 176 | |
| 177 /* -------------------------------------- */ | |
| 178 %% | |
| 179 | |
| 180 /* The grammar definition */ | |
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181 conffile: avp rules |
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182 | conffile avp rules |
| 525 | 183 ; |
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184 |
| 525 | 185 /* a server entry */ |
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186 avp: AVP '=' avp_part ';' |
| 525 | 187 ; |
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188 |
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189 avp_part: avp_part ':' QSTRING { if (avp_add($3) < 0) { YYERROR; } } |
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190 | QSTRING { if (avp_add($1) < 0) { YYERROR; } } |
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191 ; |
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192 |
| 525 | 193 rules: /* empty OK */ |
| 194 | rules rule | |
| 195 ; | |
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196 |
| 525 | 197 rule: QSTRING ':' QSTRING '+' '=' INTEGER ';' |
| 198 { | |
| 199 struct rtereg_rule * new; | |
| 200 int err; | |
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201 |
| 525 | 202 /* Add new rule in the array */ |
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203 rtereg_conf[rtereg_conf_size-1].rules_nb += 1; |
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204 CHECK_MALLOC_DO(rtereg_conf[rtereg_conf_size-1].rules = realloc(rtereg_conf[rtereg_conf_size-1].rules, rtereg_conf[rtereg_conf_size-1].rules_nb * sizeof(struct rtereg_rule)), |
| 525 | 205 { |
| 206 yyerror (&yylloc, conffile, "Not enough memory to store the configuration..."); | |
| 207 YYERROR; | |
| 208 } ); | |
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209 |
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210 new = &rtereg_conf[rtereg_conf_size-1].rules[rtereg_conf[rtereg_conf_size-1].rules_nb - 1]; |
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211 |
| 525 | 212 new->pattern = $1; |
| 213 new->server = $3; | |
| 214 new->score = $6; | |
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215 |
| 525 | 216 /* Attempt to compile the regex */ |
| 217 CHECK_FCT_DO( err=regcomp(&new->preg, new->pattern, REG_EXTENDED | REG_NOSUB), | |
| 218 { | |
| 219 char * buf; | |
| 220 size_t bl; | |
| 221 | |
| 222 /* Error while compiling the regex */ | |
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223 LOG_E("[rt_ereg] error while compiling the regular expression '%s':", new->pattern); |
| 525 | 224 |
| 225 /* Get the error message size */ | |
| 226 bl = regerror(err, &new->preg, NULL, 0); | |
| 227 | |
| 228 /* Alloc the buffer for error message */ | |
| 229 CHECK_MALLOC( buf = malloc(bl) ); | |
| 230 | |
| 231 /* Get the error message content */ | |
| 232 regerror(err, &new->preg, buf, bl); | |
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233 LOG_E("\t%s", buf); |
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234 |
| 525 | 235 /* Free the buffer, return the error */ |
| 236 free(buf); | |
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237 |
| 525 | 238 yyerror (&yylloc, conffile, "Invalid regular expression."); |
| 239 YYERROR; | |
| 240 } ); | |
| 241 } | |
| 242 ; |