Mercurial > hg > freeDiameter
view extensions/dbg_loglevel/dbg_loglevel_conf.y @ 1345:51a0521cd065
dbg_loglevel: new extension that allows changing the log level at runtime
author | Thomas Klausner <tk@giga.or.at> |
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date | Sun, 12 May 2019 10:35:46 +0200 |
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/********************************************************************************************************* * Software License Agreement (BSD License) * * Author: Thomas Klausner <tk@giga.or.at> * * * * Copyright (c) 2019, Thomas Klausner * * All rights reserved. * * * * Written under contract by Effortel Technologies SA, http://effortel.com/ * * * * 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 "dbg_loglevel.h" #include "dbg_loglevel_conf.tab.h" /* Forward declaration */ int dbg_loglevel_confparse(char *conffile); void dbg_loglevel_confrestart(FILE *input_file); /* Parse the configuration file */ int dbg_loglevel_conf_handle(char * conffile) { extern FILE *dbg_loglevel_confin; int ret; TRACE_ENTRY("%p", conffile); TRACE_DEBUG(FULL, "Parsing configuration file: %s...", conffile); dbg_loglevel_confin = fopen(conffile, "r"); if (dbg_loglevel_confin == NULL) { ret = errno; TRACE_ERROR("Unable to open extension configuration file %s for reading: %s", conffile, strerror(ret)); return ret; } dbg_loglevel_confrestart(dbg_loglevel_confin); ret = dbg_loglevel_confparse(conffile); fclose(dbg_loglevel_confin); if (ret != 0) { TRACE_ERROR( "Unable to parse the configuration file %s.", conffile); return EINVAL; } else { TRACE_DEBUG(FULL, "[dbg_loglevel] LogLevel: %d.", fd_g_debug_lvl); } return 0; } /* The Lex parser prototype */ int dbg_loglevel_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 LOGLEVEL /* -------------------------------------- */ %% /* The grammar definition */ conffile: /* empty is OK */ | conffile size | conffile errors { yyerror(&yylloc, conffile, "An error occurred while parsing the configuration file"); YYABORT; } ; /* Lexical or syntax error */ errors: LEX_ERROR | error ; size: LOGLEVEL '=' INTEGER ';' { fd_g_debug_lvl=$3; } ;