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rfcomm/parser.y
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%{
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/*
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 *
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 *  BlueZ - Bluetooth protocol stack for Linux
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 *
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 *  Copyright (C) 2002-2008  Marcel Holtmann <marcel@holtmann.org>
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 *
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 *
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 *  This program is free software; you can redistribute it and/or modify
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 *  it under the terms of the GNU General Public License as published by
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 *  the Free Software Foundation; either version 2 of the License, or
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 *  (at your option) any later version.
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 *
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 *  This program is distributed in the hope that it will be useful,
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 *  GNU General Public License for more details.
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 *
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 *  You should have received a copy of the GNU General Public License
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 *  along with this program; if not, write to the Free Software
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 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 *
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 */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <bluetooth/bluetooth.h>
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#include <bluetooth/rfcomm.h>
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#include "kword.h"
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int yylex(void);
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int yyerror(char *s); 
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struct rfcomm_opts *opts;
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%}
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%union {
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        int number;
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        char *string;
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        bdaddr_t *bdaddr;
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}
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%token K_BIND K_DEVICE K_CHANNEL K_COMMENT
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%token K_YES K_NO
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%token <number> NUMBER RFCOMM
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%token <string> STRING WORD
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%token <bdaddr> BDADDR
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%type <number> bool
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%%
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config          :
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                | statement
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                | config statement
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                ;
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statement       : section '{' rfcomm_options '}'
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                | rfcomm  '{' rfcomm_options '}'
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                | WORD
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                        {
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                        }
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                | error
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                        {
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                                yyclearin;
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                                yyerrok;
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                        }
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                ;
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section         : WORD
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                        {
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                                opts = NULL;
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                        }
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                ;
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rfcomm          : RFCOMM
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                        {
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                                if (($1 >= 0) && ($1 < RFCOMM_MAX_DEV))
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                                        opts = &rfcomm_opts[$1];
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                                else
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                                        opts = NULL;
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                        }
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                ;
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rfcomm_options  : rfcomm_option ';'
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                | error ';'
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                | rfcomm_options rfcomm_option ';'
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                ;
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rfcomm_option   : K_BIND bool
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                        {
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                                if (opts)
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                                        opts->bind = $2;
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                        }
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                | K_DEVICE BDADDR
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                        {
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                                if (opts)
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                                        bacpy(&opts->bdaddr, $2);
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                        }
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                | K_CHANNEL NUMBER
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                        {
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                                if (opts)
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                                        opts->channel = $2;
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                        }
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                | K_COMMENT STRING
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                        {
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                                if (opts)
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                                        snprintf(opts->comment, MAXCOMMENTLEN, "%s", $2);
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                        }
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                | WORD
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                        {
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                                // Unknown option
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                        }
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                ;
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bool            : K_YES { $$ = 1; }
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                | K_NO  { $$ = 0; }
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                ;
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%%
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int yyerror(char *s) 
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{
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        fprintf(stderr, "%s line %d\n", s, lineno);
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        return 0;
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}
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int rfcomm_read_config(char *filename)
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{
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        extern FILE *yyin;
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        char file[MAXPATHLEN + 1];
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        int i;
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        for (i = 0; i < RFCOMM_MAX_DEV; i++) {
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                rfcomm_opts[i].bind = 0;
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                bacpy(&rfcomm_opts[i].bdaddr, BDADDR_ANY);
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                rfcomm_opts[i].channel = 1;
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        }
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        if (filename) {
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                snprintf(file, MAXPATHLEN,  "%s", filename);
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        } else {
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                snprintf(file, MAXPATHLEN, "%s/.bluetooth/rfcomm.conf", getenv("HOME"));
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                if ((getuid() == 0) || (access(file, R_OK) < 0))
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                        snprintf(file, MAXPATHLEN, "%s/rfcomm.conf", CONFIGDIR);
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        }
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        if (!(yyin = fopen(file, "r")))
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                return -1;
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        lineno = 1;
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        yyparse();
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        fclose(yyin);
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        return 0;
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}