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/*
* The ARP Scanner (arp-scan) is Copyright (C) 2005-2007 Roy Hills,
* NTA Monitor Ltd.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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.
*
* $Id: wrappers.c 10528 2007-04-06 09:12:54Z rsh $
*
* Author: Roy Hills
* Date: 8 November 2003
*
* This file contains wrapper functions for system and library calls that
* are not expected to fail. If they do fail, then it calls err_sys to
* print a diagnostic and terminate the program. This removed the tedious
* "if ((function()) == NULL) err_sys("function");" logic thus making the
* code easier to read.
*
* The wrapper functions have the same name as the system or library function
* but with an initial capital letter. E.g. Gethostbyname(). This convention
* if from Richard Steven's UNIX Network Programming book.
*
*/
#include "arp-scan.h"
static char rcsid[] = "$Id: wrappers.c 10528 2007-04-06 09:12:54Z rsh $"; /* RCS ID for ident(1) */
/*
* We omit the timezone arg from this wrapper since it's obsolete and we never
* use it.
*/
int Gettimeofday(struct timeval *tv) {
int result;
result = gettimeofday(tv, NULL);
if (result != 0)
err_sys("gettimeofday");
return result;
}
void *Malloc(size_t size) {
void *result;
result = malloc(size);
if (result == NULL)
err_sys("malloc");
return result;
}
void *Realloc(void *ptr, size_t size) {
void *result;
result=realloc(ptr, size);
if (result == NULL)
err_sys("realloc");
return result;
}
unsigned long int Strtoul(const char *nptr, int base) {
char *endptr;
unsigned long int result;
result=strtoul(nptr, &endptr, base);
if (endptr == nptr) /* No digits converted */
err_msg("ERROR: \"%s\" is not a valid numeric value", nptr);
return result;
}
void wrappers_use_rcsid(void) {
fprintf(stderr, "%s\n", rcsid); /* Use rcsid to stop compiler optimising away */
}
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