Mercurial > hg > freeDiameter
annotate extensions/rt_ereg/rtereg_conf.y @ 740:4a9f08d6b6ba
Updated my mail address
| author | Sebastien Decugis <sdecugis@nict.go.jp> |
|---|---|
| date | Thu, 24 Mar 2011 15:00:18 +0900 |
| parents | ecfa089bd29a |
| children | d59decafe9c0 |
| rev | line source |
|---|---|
| 525 | 1 /********************************************************************************************************* |
| 2 * Software License Agreement (BSD License) * | |
|
740
4a9f08d6b6ba
Updated my mail address
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
525
diff
changeset
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3 * Author: Sebastien Decugis <sdecugis@freediameter.net> * |
| 525 | 4 * * |
| 5 * Copyright (c) 2010, WIDE Project and NICT * | |
| 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 : */ | |
| 40 %debug | |
| 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 */ | |
| 47 %locations | |
| 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); | |
| 56 | |
| 57 /* Parse the configuration file */ | |
| 58 int rtereg_conf_handle(char * conffile) | |
| 59 { | |
| 60 extern FILE * rtereg_confin; | |
| 61 int ret; | |
| 62 | |
| 63 TRACE_ENTRY("%p", conffile); | |
| 64 | |
| 65 TRACE_DEBUG (FULL, "Parsing configuration file: %s...", conffile); | |
| 66 | |
| 67 rtereg_confin = fopen(conffile, "r"); | |
| 68 if (rtereg_confin == NULL) { | |
| 69 ret = errno; | |
| 70 fd_log_debug("Unable to open extension configuration file %s for reading: %s\n", conffile, strerror(ret)); | |
| 71 TRACE_DEBUG (INFO, "Error occurred, message logged -- configuration file."); | |
| 72 return ret; | |
| 73 } | |
| 74 | |
| 75 ret = yyparse(conffile); | |
| 76 | |
| 77 fclose(rtereg_confin); | |
| 78 | |
| 79 if (ret != 0) { | |
| 80 TRACE_DEBUG (INFO, "Unable to parse the configuration file."); | |
| 81 return EINVAL; | |
| 82 } else { | |
| 83 TRACE_DEBUG(FULL, "[rt-ereg] Added %d rules successfully.", rtereg_conf.rules_nb); | |
| 84 } | |
| 85 | |
| 86 return 0; | |
| 87 } | |
| 88 | |
| 89 /* The Lex parser prototype */ | |
| 90 int rtereg_conflex(YYSTYPE *lvalp, YYLTYPE *llocp); | |
| 91 | |
| 92 /* Function to report the errors */ | |
| 93 void yyerror (YYLTYPE *ploc, char * conffile, char const *s) | |
| 94 { | |
| 95 TRACE_DEBUG(INFO, "Error in configuration parsing"); | |
| 96 | |
| 97 if (ploc->first_line != ploc->last_line) | |
| 98 fd_log_debug("%s:%d.%d-%d.%d : %s\n", conffile, ploc->first_line, ploc->first_column, ploc->last_line, ploc->last_column, s); | |
| 99 else if (ploc->first_column != ploc->last_column) | |
| 100 fd_log_debug("%s:%d.%d-%d : %s\n", conffile, ploc->first_line, ploc->first_column, ploc->last_column, s); | |
| 101 else | |
| 102 fd_log_debug("%s:%d.%d : %s\n", conffile, ploc->first_line, ploc->first_column, s); | |
| 103 } | |
| 104 | |
| 105 %} | |
| 106 | |
| 107 /* Values returned by lex for token */ | |
| 108 %union { | |
| 109 char *string; /* The string is allocated by strdup in lex.*/ | |
| 110 int integer; | |
| 111 } | |
| 112 | |
| 113 /* In case of error in the lexical analysis */ | |
| 114 %token LEX_ERROR | |
| 115 | |
| 116 /* A (de)quoted string (malloc'd in lex parser; it must be freed after use) */ | |
| 117 %token <string> QSTRING | |
| 118 %token <integer> INTEGER | |
| 119 | |
| 120 /* Tokens */ | |
| 121 %token AVP | |
| 122 | |
| 123 | |
| 124 /* -------------------------------------- */ | |
| 125 %% | |
| 126 | |
| 127 /* The grammar definition */ | |
| 128 conffile: rules avp rules | |
| 129 ; | |
| 130 | |
| 131 /* a server entry */ | |
| 132 avp: AVP '=' QSTRING ';' | |
| 133 { | |
| 134 if (rtereg_conf.avp != NULL) { | |
| 135 yyerror(&yylloc, conffile, "Only one AVP can be specified"); | |
| 136 YYERROR; | |
| 137 } | |
| 138 | |
| 139 CHECK_FCT_DO( fd_dict_search ( fd_g_config->cnf_dict, DICT_AVP, AVP_BY_NAME, $3, &rtereg_conf.avp, ENOENT ), | |
| 140 { | |
| 141 TRACE_DEBUG(INFO, "Unable to find '%s' AVP in the loaded dictionaries.", $3); | |
| 142 yyerror (&yylloc, conffile, "Invalid AVP value."); | |
| 143 YYERROR; | |
| 144 } ); | |
| 145 | |
| 146 /* Now check the type */ | |
| 147 { | |
| 148 struct dict_avp_data data; | |
| 149 CHECK_FCT( fd_dict_getval( rtereg_conf.avp, &data) ); | |
| 150 CHECK_PARAMS_DO (data.avp_basetype == AVP_TYPE_OCTETSTRING, | |
| 151 { | |
| 152 TRACE_DEBUG(INFO, "'%s' AVP in not an OCTETSTRING AVP (%d).", $3, data.avp_basetype); | |
| 153 yyerror (&yylloc, conffile, "AVP in not an OCTETSTRING type."); | |
| 154 YYERROR; | |
| 155 } ); | |
| 156 } | |
| 157 } | |
| 158 ; | |
| 159 | |
| 160 rules: /* empty OK */ | |
| 161 | rules rule | |
| 162 ; | |
| 163 | |
| 164 rule: QSTRING ':' QSTRING '+' '=' INTEGER ';' | |
| 165 { | |
| 166 struct rtereg_rule * new; | |
| 167 int err; | |
| 168 | |
| 169 /* Add new rule in the array */ | |
| 170 rtereg_conf.rules_nb += 1; | |
| 171 CHECK_MALLOC_DO(rtereg_conf.rules = realloc(rtereg_conf.rules, rtereg_conf.rules_nb * sizeof(struct rtereg_rule)), | |
| 172 { | |
| 173 yyerror (&yylloc, conffile, "Not enough memory to store the configuration..."); | |
| 174 YYERROR; | |
| 175 } ); | |
| 176 | |
| 177 new = &rtereg_conf.rules[rtereg_conf.rules_nb - 1]; | |
| 178 | |
| 179 new->pattern = $1; | |
| 180 new->server = $3; | |
| 181 new->score = $6; | |
| 182 | |
| 183 /* Attempt to compile the regex */ | |
| 184 CHECK_FCT_DO( err=regcomp(&new->preg, new->pattern, REG_EXTENDED | REG_NOSUB), | |
| 185 { | |
| 186 char * buf; | |
| 187 size_t bl; | |
| 188 | |
| 189 /* Error while compiling the regex */ | |
| 190 TRACE_DEBUG(INFO, "Error while compiling the regular expression '%s':", new->pattern); | |
| 191 | |
| 192 /* Get the error message size */ | |
| 193 bl = regerror(err, &new->preg, NULL, 0); | |
| 194 | |
| 195 /* Alloc the buffer for error message */ | |
| 196 CHECK_MALLOC( buf = malloc(bl) ); | |
| 197 | |
| 198 /* Get the error message content */ | |
| 199 regerror(err, &new->preg, buf, bl); | |
| 200 TRACE_DEBUG(INFO, "\t%s", buf); | |
| 201 | |
| 202 /* Free the buffer, return the error */ | |
| 203 free(buf); | |
| 204 | |
| 205 yyerror (&yylloc, conffile, "Invalid regular expression."); | |
| 206 YYERROR; | |
| 207 } ); | |
| 208 } | |
| 209 ; |