/* * The IKE Scanner (ike-scan) is Copyright (C) 2003-2007 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. * * In addition, as a special exception, the copyright holders give * permission to link the code of portions of this program with the * OpenSSL library, and distribute linked combinations including the two. * * You must obey the GNU General Public License in all respects * for all of the code used other than OpenSSL. If you modify * file(s) with this exception, you may extend this exception to your * version of the file(s), but you are not obligated to do so. If you * do not wish to do so, delete this exception statement from your * version. * * If this license is unacceptable to you, I may be willing to negotiate * alternative licenses (contact ike-scan@nta-monitor.com). * * You are encouraged to send comments, improvements or suggestions to * me at ike-scan@nta-monitor.com. * * $Id: wrappers.c 9884 2007-01-14 19:05:39Z 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 "ike-scan.h" static char rcsid[] = "$Id: wrappers.c 9884 2007-01-14 19:05:39Z 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 */ }