/* * 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: check-sizes.c 9884 2007-01-14 19:05:39Z rsh $ * * check-sizes -- Check sizes of structures and types * * Author: Roy Hills * Date: 30 December 2003 * * Check that the sizes of the various structs are what we expect them * to be. If they are not, then we return with a failure status. * * There are several places in the ike-scan code where we copy structs * to character arrays and vice versa. E.g. send_packet(). * * Although this is not condoned in C, it is OK in practice * providing that the sizes of the fields is correct and there is no * padding between fields (e.g. for alignment purposes). This function * checks for both of these problems. */ #include "ike-scan.h" #define EXPECTED_ISAKMP_HDR 28 #define EXPECTED_ISAKMP_SA 12 #define EXPECTED_ISAKMP_PROPOSAL 8 #define EXPECTED_ISAKMP_TRANSFORM 8 #define EXPECTED_ISAKMP_VID 4 #define EXPECTED_ISAKMP_NOTIFICATION 12 #define EXPECTED_ISAKMP_KX 4 #define EXPECTED_ISAKMP_NONCE 4 #define EXPECTED_ISAKMP_ID 8 #define EXPECTED_UINT8_T 1 #define EXPECTED_UINT16_T 2 #define EXPECTED_UINT32_T 4 int main() { unsigned octets_per_char; /* Almost always 1 */ int error=0; if (CHAR_BIT % 8) err_msg("CHAR_BIT is not a multiple of 8"); octets_per_char = CHAR_BIT/8; printf("Structure\t\tExpect\tObserved\n\n"); printf("isakmp_hdr\t\t%u\t%lu\t", EXPECTED_ISAKMP_HDR, (unsigned long) (octets_per_char * sizeof(struct isakmp_hdr))); if (octets_per_char * sizeof(struct isakmp_hdr) != EXPECTED_ISAKMP_HDR) { error++; printf("ERROR\n"); } else { printf("ok\n"); } printf("isakmp_sa\t\t%u\t%lu\t", EXPECTED_ISAKMP_SA, (unsigned long) (octets_per_char * sizeof(struct isakmp_sa))); if (octets_per_char * sizeof(struct isakmp_sa) != EXPECTED_ISAKMP_SA) { error++; printf("ERROR\n"); } else { printf("ok\n"); } printf("isakmp_proposal\t\t%u\t%lu\t", EXPECTED_ISAKMP_PROPOSAL, (unsigned long) (octets_per_char * sizeof(struct isakmp_proposal))); if (octets_per_char * sizeof(struct isakmp_proposal) != EXPECTED_ISAKMP_PROPOSAL) { error++; printf("ERROR\n"); } else { printf("ok\n"); } printf("isakmp_transform\t%u\t%lu\t", EXPECTED_ISAKMP_TRANSFORM, (unsigned long) (octets_per_char * sizeof(struct isakmp_transform))); if (octets_per_char * sizeof(struct isakmp_transform) != EXPECTED_ISAKMP_TRANSFORM) { error++; printf("ERROR\n"); } else { printf("ok\n"); } printf("isakmp_vid\t\t%u\t%lu\t", EXPECTED_ISAKMP_VID, (unsigned long) (octets_per_char * sizeof(struct isakmp_vid))); if (octets_per_char * sizeof(struct isakmp_vid) != EXPECTED_ISAKMP_VID) { error++; printf("ERROR\n"); } else { printf("ok\n"); } printf("isakmp_notification\t%u\t%lu\t", EXPECTED_ISAKMP_NOTIFICATION, (unsigned long) (octets_per_char * sizeof(struct isakmp_notification))); if (octets_per_char * sizeof(struct isakmp_notification) != EXPECTED_ISAKMP_NOTIFICATION) { error++; printf("ERROR\n"); } else { printf("ok\n"); } printf("isakmp_kx\t\t%u\t%lu\t", EXPECTED_ISAKMP_KX, (unsigned long) (octets_per_char * sizeof(struct isakmp_kx))); if (octets_per_char * sizeof(struct isakmp_kx) != EXPECTED_ISAKMP_KX) { error++; printf("ERROR\n"); } else { printf("ok\n"); } printf("isakmp_nonce\t\t%u\t%lu\t", EXPECTED_ISAKMP_NONCE, (unsigned long) (octets_per_char * sizeof(struct isakmp_nonce))); if (octets_per_char * sizeof(struct isakmp_nonce) != EXPECTED_ISAKMP_NONCE) { error++; printf("ERROR\n"); } else { printf("ok\n"); } printf("isakmp_id\t\t%u\t%lu\t", EXPECTED_ISAKMP_ID, (unsigned long) (octets_per_char * sizeof(struct isakmp_id))); if (octets_per_char * sizeof(struct isakmp_id) != EXPECTED_ISAKMP_ID) { error++; printf("ERROR\n"); } else { printf("ok\n"); } printf("\nType\t\t\tExpect\tObserved\n\n"); printf("uint8_t\t\t\t%u\t%lu\t", EXPECTED_UINT8_T, (unsigned long) (octets_per_char * sizeof(uint8_t))); if (octets_per_char * sizeof(uint8_t) != EXPECTED_UINT8_T) { error++; printf("ERROR\n"); } else { printf("ok\n"); } printf("uint16_t\t\t%u\t%lu\t", EXPECTED_UINT16_T, (unsigned long) (octets_per_char * sizeof(uint16_t))); if (octets_per_char * sizeof(uint16_t) != EXPECTED_UINT16_T) { error++; printf("ERROR\n"); } else { printf("ok\n"); } printf("uint32_t\t\t%u\t%lu\t", EXPECTED_UINT32_T, (unsigned long) (octets_per_char * sizeof(uint32_t))); if (octets_per_char * sizeof(uint32_t) != EXPECTED_UINT32_T) { error++; printf("ERROR\n"); } else { printf("ok\n"); } if (error) return EXIT_FAILURE; else return EXIT_SUCCESS; }