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Change-Id: I6a4444e3c193dae437cd7929f4c39aba7b749efa
diff --git a/extensions/rt_busypeers/rtbusy_conf.y b/extensions/rt_busypeers/rtbusy_conf.y
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+/*********************************************************************************************************
+* Software License Agreement (BSD License) *
+* Author: Sebastien Decugis <sdecugis@freediameter.net> *
+* *
+* Copyright (c) 2013, WIDE Project and NICT *
+* All rights reserved. *
+* *
+* Redistribution and use of this software in source and binary forms, with or without modification, are *
+* permitted provided that the following conditions are met: *
+* *
+* * Redistributions of source code must retain the above *
+* copyright notice, this list of conditions and the *
+* following disclaimer. *
+* *
+* * Redistributions in binary form must reproduce the above *
+* copyright notice, this list of conditions and the *
+* following disclaimer in the documentation and/or other *
+* materials provided with the distribution. *
+* *
+* * Neither the name of the WIDE Project or NICT nor the *
+* names of its contributors may be used to endorse or *
+* promote products derived from this software without *
+* specific prior written permission of WIDE Project and *
+* NICT. *
+* *
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED *
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
+* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR *
+* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *
+* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS *
+* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR *
+* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF *
+* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
+*********************************************************************************************************/
+
+/* Yacc extension's configuration parser.
+ */
+
+/* For development only : */
+%debug
+%error-verbose
+
+/* The parser receives the configuration file filename as parameter */
+%parse-param {char * conffile}
+
+/* Keep track of location */
+%locations
+%pure-parser
+
+%{
+#include "rtbusy.h"
+#include "rtbusy_conf.tab.h"
+
+/* Forward declaration */
+int yyparse(char * conffile);
+
+/* Parse the configuration file */
+int rtbusy_conf_handle(char * conffile)
+{
+ extern FILE * rtbusy_confin;
+ int ret;
+
+ TRACE_ENTRY("%p", conffile);
+
+ TRACE_DEBUG (FULL, "Parsing configuration file: %s...", conffile);
+
+ rtbusy_confin = fopen(conffile, "r");
+ if (rtbusy_confin == NULL) {
+ ret = errno;
+ TRACE_ERROR("Unable to open extension configuration file %s for reading: %s", conffile, strerror(ret));
+ return ret;
+ }
+
+ ret = yyparse(conffile);
+
+ fclose(rtbusy_confin);
+
+ if (ret != 0) {
+ TRACE_ERROR( "Unable to parse the configuration file.");
+ return EINVAL;
+ } else {
+ TRACE_DEBUG(FULL, "[rt_busypeers] Configuration: %d-%d-%d-%d.", rtbusy_conf.SkipTooBusyErrors, rtbusy_conf.RetryDistantPeers, rtbusy_conf.RetryMaxPeers, rtbusy_conf.RelayTimeout);
+ }
+
+ return 0;
+}
+
+/* The Lex parser prototype */
+int rtbusy_conflex(YYSTYPE *lvalp, YYLTYPE *llocp);
+
+/* Function to report the errors */
+void yyerror (YYLTYPE *ploc, char * conffile, char const *s)
+{
+ TRACE_DEBUG(INFO, "Error in configuration parsing");
+
+ if (ploc->first_line != ploc->last_line)
+ fd_log_error("%s:%d.%d-%d.%d : %s", conffile, ploc->first_line, ploc->first_column, ploc->last_line, ploc->last_column, s);
+ else if (ploc->first_column != ploc->last_column)
+ fd_log_error("%s:%d.%d-%d : %s", conffile, ploc->first_line, ploc->first_column, ploc->last_column, s);
+ else
+ fd_log_error("%s:%d.%d : %s", conffile, ploc->first_line, ploc->first_column, s);
+}
+
+%}
+
+/* Values returned by lex for token */
+%union {
+ int integer;
+}
+
+/* In case of error in the lexical analysis */
+%token LEX_ERROR
+
+/* A (de)quoted string (malloc'd in lex parser; it must be freed after use) */
+%token <integer> INTEGER
+
+/* Tokens */
+%token SKIPTOOBUSYERRORS
+%token RETRYDISTANTPEERS
+%token RETRYMAXPEERS
+%token RELAYTIMEOUT
+
+
+/* -------------------------------------- */
+%%
+
+ /* The grammar definition */
+conffile: /* empty is OK */
+ | conffile toobusy
+ | conffile distant
+ | conffile maxretry
+ | conffile timeout
+ | conffile errors
+ {
+ yyerror(&yylloc, conffile, "An error occurred while parsing the configuration file");
+ return EINVAL;
+ }
+ ;
+
+ /* Lexical or syntax error */
+errors: LEX_ERROR
+ | error
+ ;
+
+toobusy: SKIPTOOBUSYERRORS ';'
+ {
+ rtbusy_conf.SkipTooBusyErrors=1;
+ }
+ ;
+
+distant: RETRYDISTANTPEERS ';'
+ {
+ rtbusy_conf.RetryDistantPeers=1;
+ }
+ ;
+
+maxretry: RETRYMAXPEERS '=' INTEGER ';'
+ {
+ rtbusy_conf.RetryMaxPeers=$3;
+ }
+ ;
+
+timeout: RELAYTIMEOUT '=' INTEGER ';'
+ {
+ rtbusy_conf.RelayTimeout=$3;
+ }
+ ;
+