Initial commit

Change-Id: I6a4444e3c193dae437cd7929f4c39aba7b749efa
diff --git a/extensions/test_sip/test_sip.y b/extensions/test_sip/test_sip.y
new file mode 100644
index 0000000..e699c28
--- /dev/null
+++ b/extensions/test_sip/test_sip.y
@@ -0,0 +1,175 @@
+/*********************************************************************************************************
+* Software License Agreement (BSD License)                                                               *
+* Author: Alexandre Westfahl <awestfahl@freediameter.net>						 *
+*													 *
+* Copyright (c) 2010, Alexandre Westfahl, Teraoka Laboratory (Keio University), and the WIDE Project. 	 *		
+*													 *
+* All rights reserved.											 *
+* Based on ta_conf.y (Sebastien Decugis <sdecugis@freediameter.net>)					 *
+* 													 *
+* 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 Teraoka Laboratory nor the 							 *
+*   names of its contributors may be used to endorse or 						 *
+*   promote products derived from this software without 						 *
+*   specific prior written permission of Teraoka Laboratory 						 *
+*   													 *
+* 													 *
+* 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.								 *
+*********************************************************************************************************/
+
+/* 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 "test_sip.h"
+#include "test_sip.tab.h"	/* bison is not smart enough to define the YYLTYPE before including this code, so... */
+
+#include <string.h>
+#include <errno.h>
+
+/* Forward declaration */
+int yyparse(char * conffile);
+
+/* Parse the configuration file */
+int ts_conf_handle(char * conffile)
+{
+	extern FILE * test_sipin;
+	int ret;
+	
+	TRACE_ENTRY("%p", conffile);
+	
+	TRACE_DEBUG (FULL, "Parsing configuration file: %s...", conffile);
+	
+	test_sipin = fopen(conffile, "r");
+	if (test_sipin == NULL) {
+		ret = errno;
+		fd_log_debug("Unable to open extension configuration file %s for reading: %s", conffile, strerror(ret));
+		TRACE_DEBUG (INFO, "Error occurred, message logged -- configuration file.");
+		return ret;
+	}
+
+	ret = yyparse(conffile);
+
+	fclose(test_sipin);
+
+	if (ret != 0) {
+		TRACE_DEBUG (INFO, "Unable to parse the configuration file.");
+		return EINVAL;
+	}
+	
+	return 0;
+}
+
+/* The Lex parser prototype */
+int test_sipflex(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_debug("%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_debug("%s:%d.%d-%d : %s", conffile, ploc->first_line, ploc->first_column, ploc->last_column, s);
+	else
+		fd_log_debug("%s:%d.%d : %s", conffile, ploc->first_line, ploc->first_column, s);
+}
+
+%}
+
+/* Values returned by lex for token */
+%union {
+	char 		*string;	/* The string is allocated by strdup in lex.*/
+	int		 integer;		/* Store integer values */
+}
+
+/* In case of error in the lexical analysis */
+%token 		LEX_ERROR
+
+/* Key words */
+%token 		TESTSIP_DESTREALM
+%token 		TESTSIP_DESTSIP
+%token 		TESTSIP_PASSWORD
+%token 		TESTSIP_SIPAOR
+%token 		TESTSIP_USERNAME
+
+/* Tokens and types for routing table definition */
+/* A (de)quoted string (malloc'd in lex parser; it must be freed after use) */
+%token <string>	QSTRING
+
+/* An integer value */
+%token <integer> INTEGER
+
+/* -------------------------------------- */
+%%
+
+	/* The grammar definition */
+conffile:		/* empty grammar is OK */
+			| conffile destination_realm
+			| conffile destination_sip
+			| conffile username
+			| conffile password
+			| conffile sip_aor
+			;
+
+destination_realm:			TESTSIP_DESTREALM '=' QSTRING ';'
+			{
+				free(ts_conf->destination_realm);
+				ts_conf->destination_realm = $3;
+			}
+			;
+
+destination_sip:			TESTSIP_DESTSIP '=' QSTRING ';'
+			{
+				free(ts_conf->destination_sip);
+				ts_conf->destination_sip = $3;
+			}
+			;
+
+username:			TESTSIP_USERNAME '=' QSTRING ';'
+			{
+				free(ts_conf->username);
+				ts_conf->username = $3;
+			}
+			;
+
+password:			TESTSIP_PASSWORD '=' QSTRING ';'
+			{
+				free(ts_conf->password);
+				ts_conf->password = $3;
+			}
+			;
+
+sip_aor:			TESTSIP_SIPAOR '=' QSTRING ';'
+			{
+				free(ts_conf->sip_aor);
+				ts_conf->sip_aor = $3;
+			}
+			;