/**************************************************************************** * * Copyright (C) 2003-2007 Sourcefire, Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License Version 2 as * published by the Free Software Foundation.  You may not use, modify or * distribute this program under any other version of the GNU General * Public License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * ****************************************************************************/ /** * @file   util_str.c * @author Chris Green <cmg@sourcefire.com> * @date   Fri Jun 27 10:41:59 2003 *  * @brief  utility string functions *  *  */#ifdef HAVE_CONFIG_H#include "config.h"#endif#include "util_str.h"#include <stdlib.h>#ifdef HAVE_STRINGS_H#include <strings.h>#endif/**  * Convert a string to an int and check for problems *  * @param str string to parse as an int * @param ret return value for the int * @param allow_negative allow negative values  *  * @return 0 on sucess, else failure */int str2int(char *str, int *ret, int allow_negative){    char *endptr;    long int value;    if(ret && str && *str != '\0')    {        value = strtol(str, &endptr, 10);        if(endptr == str)        {            /* parsing has failed */            return -1;        }        if(!allow_negative)        {            if(value < 0)            {                return -1;            }        }        *ret = value;                   return 0;    }    return -1;}/**  * Set opt_value to 1 if the value is on, 0 if it's off *  * @param name option name to configure (not used but useful for debugging) * @param value value to configure (should be either on or off ) * @param opt_value ptr to integer to configure * * @returns 0 on success , else failure */int toggle_option(char *name, char *value, int *opt_value){    int opt_on, opt_off;        if(!name || !value || !opt_value || (*value == '\0') || (*name == '\0') )        return -1;    opt_on  = strcasecmp(value,"on");    opt_off = strcasecmp(value,"off");    if(opt_off && opt_on)    {        /*	 * the string is neither "on" or "off"	 *	 * we don't know what the hell we're looking at. return error.	 */        return -2;    }    if(opt_on == 0)        *opt_value = 1;    else        *opt_value = 0;    return 0;}#ifdef TEST_UTIL_STRint main(void){    int value;    printf("you should see 4 pass messages\n");    if(str2int("-1",&value,0) != 0)        printf("test 1 passed and failed to parse\n");    if(str2int("-1",&value,1) == 0 && value == -1)        printf("test 2 passed: %d\n", value);    if(str2int("0",&value,1) == 0 && value == 0 )        printf("test 3 passed: %d\n", value);        if(str2int("124",&value,1) == 0 && value == 124 )        printf("test 4 passed: %d\n", value);                }#endif /* TEST_UTIL_STR */