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+/*********************************************************************************************************
+* Software License Agreement (BSD License) *
+* Author: Sebastien Decugis <sdecugis@freediameter.net> *
+* *
+* Copyright (c) 2015, 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.
+ * See doc/app_acct.conf.sample for configuration file format
+ */
+
+/* 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 "app_acct.h"
+#include "acct_conf.tab.h"
+
+#include <string.h>
+#include <errno.h>
+
+/* Forward declaration */
+int yyparse(char * conffile);
+
+/* The Lex parser prototype */
+int acct_conflex(YYSTYPE *lvalp, YYLTYPE *llocp);
+
+/* the global configuration */
+struct acct_conf * acct_config = NULL;
+
+/* Initialize the blank configuration structure */
+int acct_conf_init(void)
+{
+ TRACE_ENTRY();
+
+ CHECK_MALLOC( acct_config = malloc(sizeof(struct acct_conf)) );
+ memset(acct_config, 0, sizeof(struct acct_conf) );
+ fd_list_init(&acct_config->avps, NULL);
+
+ return 0;
+}
+
+/* Validate and eventually display the content of the configuration file for debug */
+int acct_conf_check(char * conffile)
+{
+ CHECK_PARAMS(acct_config);
+
+ if ( ! acct_config->conninfo) {
+ fd_log_debug("[app_acct] ERROR: 'ConnInfo' is missing in file '%s'."
+ " You can specify 'ConnInfo=\"\";' to use default parameters.", conffile);
+ return EINVAL;
+ }
+ if ( ! acct_config->tablename) {
+ fd_log_debug("[app_acct] ERROR: 'Table' value is missing in file '%s'.", conffile);
+ return EINVAL;
+ }
+
+ if (!TRACE_BOOL(FULL))
+ return 0;
+
+ struct fd_list * li;
+
+ fd_log_debug("[app_acct] Configuration dump:");
+ fd_log_debug(" Database:");
+ fd_log_debug(" ConnInfo ...... : '%s'", acct_config->conninfo ?: "<null>");
+ fd_log_debug(" Table name .... : '%s'", acct_config->tablename ?: "<null>");
+ fd_log_debug(" Timestamp field : '%s'", acct_config->tsfield ?: "<null>");
+ fd_log_debug(" Server name fld : '%s'", acct_config->srvnfield ?: "<null>");
+ fd_log_debug(" AVPs that will be saved to the database:");
+ for (li = acct_config->avps.next; li != &acct_config->avps; li = li->next) {
+ struct acct_conf_avp * a = (struct acct_conf_avp *)li;
+ fd_log_debug(" %-*s AVP%s saved in ", 30, a->avpname, a->required ? " [required]":"" );
+ if (a->multi) {
+ fd_log_debug("fields '%s[1..%d]' ", a->field?:a->avpname, a->multi);
+ } else {
+ fd_log_debug("field '%s' ", a->field?:a->avpname);
+ }
+ fd_log_debug("as ::%s", diam2db_types_mapping[a->avptype]);
+ }
+ fd_log_debug("[app_acct] Complete.");
+ return 0;
+}
+
+void acct_conf_free(void)
+{
+ TRACE_ENTRY();
+
+ if (!acct_config)
+ return;
+
+ /* Destroy the list */
+ while (!FD_IS_LIST_EMPTY(&acct_config->avps)) {
+ struct acct_conf_avp * a = (struct acct_conf_avp *)(acct_config->avps.next);
+ fd_list_unlink(&a->chain);
+ free(a->avpname);
+ free(a->field);
+ free(a);
+ }
+
+ /* destroy other data */
+ free(acct_config->conninfo);
+ free(acct_config->tablename);
+ free(acct_config->tsfield);
+ free(acct_config->srvnfield);
+
+ /* Done */
+ free(acct_config);
+ acct_config = NULL;
+}
+
+/* Parse the configuration file */
+int acct_conf_parse(char * conffile)
+{
+ extern FILE * acct_confin;
+ int ret;
+
+ TRACE_ENTRY("%p", conffile);
+
+ TRACE_DEBUG (FULL, "Parsing configuration file: %s...", conffile);
+
+ acct_confin = fopen(conffile, "r");
+ if (acct_confin == NULL) {
+ ret = errno;
+ fd_log_debug("Unable to open extension configuration file %s for reading: %s", conffile, strerror(ret));
+ return ret;
+ }
+
+ ret = yyparse(conffile);
+
+ fclose(acct_confin);
+
+ if (ret != 0) {
+ TRACE_DEBUG (INFO, "Unable to parse the configuration file.");
+ return EINVAL;
+ }
+
+ return 0;
+}
+
+/* Function to report the errors */
+void yyerror (YYLTYPE *ploc, char * conffile, char const *s)
+{
+ LOG_E( "Error in configuration parsing");
+
+ if (ploc->first_line != ploc->last_line)
+ LOG_E("%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)
+ LOG_E("%s:%d.%d-%d : %s", conffile, ploc->first_line, ploc->first_column, ploc->last_column, s);
+ else
+ LOG_E("%s:%d.%d : %s", conffile, ploc->first_line, ploc->first_column, s);
+}
+
+static struct acct_conf_avp avpdata;
+
+%}
+
+/* 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
+
+/* Keywords */
+%token FIELD
+%token REQUIRED
+%token MULTI
+%token CONNINFO
+%token TABLE
+%token TSFIELD
+%token SRVNFIELD
+
+/* Tokens and types */
+/* 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 for the parser (will be validated afterwards) */
+ | conffile avpline
+ | conffile conninfoline
+ | conffile tableline
+ | conffile tsfieldline
+ | conffile srvnfieldline
+ | conffile errors
+ {
+ yyerror(&yylloc, conffile, "An error occurred while parsing the configuration file.");
+ return EINVAL;
+ }
+ ;
+
+ /* Catch lexical and syntax errors */
+errors: LEX_ERROR
+ | error
+ ;
+
+ /* The tokens */
+avpline: {
+ memset(&avpdata, 0, sizeof(struct acct_conf_avp));
+ }
+ QSTRING avpcontents ';'
+ {
+ struct acct_conf_avp *new;
+ struct dict_object * dict;
+ struct dict_avp_data dictdata;
+
+ /* Validate the avp name first */
+ CHECK_FCT_DO( fd_dict_search( fd_g_config->cnf_dict, DICT_AVP, AVP_BY_NAME_ALL_VENDORS, $2, &dict, ENOENT),
+ { yyerror (&yylloc, conffile, "AVP definition not found in the dictionary. Was the appropriate dict_*.fdx extension loaded?"); YYERROR; } );
+ CHECK_FCT( fd_dict_getval( dict, &dictdata ));
+
+ /* Create a new entry */
+ CHECK_MALLOC_DO( new = malloc(sizeof(struct acct_conf_avp)),
+ { yyerror (&yylloc, conffile, "Out of memory"); YYERROR; } );
+
+ /* Retrieve all the data from avpcontents parsing (field, required, multi) */
+ memcpy(new, &avpdata, sizeof(struct acct_conf_avp));
+
+ /* Initialize the other data */
+ fd_list_init(&new->chain, NULL);
+ new->avpname = $2;
+ new->avpobj = dict;
+ new->avptype = dictdata.avp_basetype;
+
+ /* Add this new entry at the end of the list */
+ fd_list_insert_before( &acct_config->avps, &new->chain );
+ }
+ ;
+
+avpcontents: /* Empty content is fine */
+ | '=' '{' avpflagline '}'
+ ;
+
+avpflagline: /* Empty flags is also fine */
+ | avpflagline FIELD '=' QSTRING ';'
+ {
+ if (avpdata.field) {
+ yyerror (&yylloc, conffile, "Duplicate entry");
+ YYERROR;
+ }
+ avpdata.field = $4;
+ }
+ | avpflagline REQUIRED ';'
+ {
+ avpdata.required = 1;
+ }
+ | avpflagline MULTI '=' INTEGER ';'
+ {
+ avpdata.multi = (unsigned) $4;
+ }
+ ;
+
+conninfoline: CONNINFO '=' QSTRING ';'
+ {
+ if (acct_config->conninfo) {
+ yyerror (&yylloc, conffile, "Duplicate entry");
+ YYERROR;
+ }
+ acct_config->conninfo = $3;
+ }
+ ;
+
+tableline: TABLE '=' QSTRING ';'
+ {
+ if (acct_config->tablename) {
+ yyerror (&yylloc, conffile, "Duplicate entry");
+ YYERROR;
+ }
+ acct_config->tablename = $3;
+ }
+ ;
+
+tsfieldline: TSFIELD '=' QSTRING ';'
+ {
+ if (acct_config->tsfield) {
+ yyerror (&yylloc, conffile, "Duplicate entry");
+ YYERROR;
+ }
+ acct_config->tsfield = $3;
+ }
+ ;
+
+srvnfieldline: SRVNFIELD '=' QSTRING ';'
+ {
+ if (acct_config->srvnfield) {
+ yyerror (&yylloc, conffile, "Duplicate entry");
+ YYERROR;
+ }
+ acct_config->srvnfield = $3;
+ }
+ ;