Mercurial > hg > freeDiameter
diff extensions/rt_deny_by_size/rt_deny_by_size_conf.l @ 1340:daf61e573fee
rt_deny_by_size: new extension
This extension denies messages that are larger than a configured size.
The size is configurable in a config file, and the extension allows
reloading its config using SIGUSR1.
Written for Effortel Technologies SA and published with their consent.
author | Thomas Klausner <tk@giga.or.at> |
---|---|
date | Tue, 09 Apr 2019 15:57:12 +0200 |
parents | |
children | 566bb46cc73f |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/extensions/rt_deny_by_size/rt_deny_by_size_conf.l Tue Apr 09 15:57:12 2019 +0200 @@ -0,0 +1,107 @@ +/********************************************************************************************************* +* Software License Agreement (BSD License) * +* Authors: Thomas Klausner <tk@giga.or.at> based on code by Sebastien Decugis <sdecugis@freediameter.net>* +* * +* Copyright (c) 2018, Thomas Klausner * +* Copyright (c) 2013, WIDE Project and NICT * +* 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. * +*********************************************************************************************************/ + +/* Tokenizer + * + */ + +%{ +#include "rt_deny_by_size.h" +#include "rt_deny_by_size_conf.tab.h" + +/* Update the column information */ +#define YY_USER_ACTION { \ + yylloc->first_column = yylloc->last_column + 1; \ + yylloc->last_column = yylloc->first_column + yyleng - 1; \ +} + +/* Avoid warning with newer flex */ +#define YY_NO_INPUT + +%} + +qstring \"[^\"\n]*\" + + +%option bison-bridge bison-locations +%option noyywrap +%option nounput + +%% + + /* Update the line count */ +\n { + yylloc->first_line++; + yylloc->last_line++; + yylloc->last_column=0; + } + + /* Eat all spaces but not new lines */ +([[:space:]]{-}[\n])+ ; + /* Eat all comments */ +#.*$ ; + + /* Recognize any integer */ +[-]?[[:digit:]]+ { + /* Convert this to an integer value */ + int ret=0; + ret = sscanf(yytext, "%i", &yylval->integer); + if (ret != 1) { + /* No matching: an error occurred */ + TRACE_ERROR("Unable to convert the value '%s' to a valid number: %s", yytext, strerror(errno)); + return LEX_ERROR; /* trig an error in yacc parser */ + /* Maybe we could REJECT instead of failing here? */ + } + return INTEGER; + } + + + + /* The key words */ +(?i:"MaximumSize") { return MAXIMUMSIZE; } + + /* Valid single characters for yyparse */ +[=;] { return yytext[0]; } + + /* Unrecognized sequence, if it did not match any previous pattern */ +[^[:space:]=;\n]+ { + TRACE_ERROR("Unrecognized text on line %d col %d: '%s'.", yylloc->first_line, yylloc->first_column, yytext); + return LEX_ERROR; + } + +%%