/**

 * Tool utility functions

 *

 * Copyright (c) 2014 Red Hat <pmoore@redhat.com>

 * Author: Paul Moore <paul@paul-moore.com>

 */

/*

 * This library is free software; you can redistribute it and/or modify it

 * under the terms of version 2.1 of the GNU Lesser General Public License as

 * published by the Free Software Foundation.

 *

 * This library 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 Lesser General Public License

 * for more details.

 *

 * You should have received a copy of the GNU Lesser General Public License

 * along with this library; if not, see <http://www.gnu.org/licenses>.

 */

#include <errno.h>

#include <stdlib.h>

#include <stdio.h>

#include <linux/audit.h>

#ifndef _BSD_SOURCE

#define _BSD_SOURCE

#endif

#include <endian.h>

#include "util.h"

/* determine the native architecture */

#if __i386__

#define ARCH_NATIVE		AUDIT_ARCH_I386

#elif __x86_64__

#ifdef __ILP32__

#define ARCH_NATIVE		AUDIT_ARCH_X86_64

#else

#define ARCH_NATIVE		AUDIT_ARCH_X86_64

#endif /* __ILP32__ */

#elif __arm__

#define ARCH_NATIVE		AUDIT_ARCH_ARM

#elif __aarch64__

#define ARCH_NATIVE		AUDIT_ARCH_AARCH64

#elif __mips__ && _MIPS_SIM == _MIPS_SIM_ABI32

#if __MIPSEB__

#define ARCH_NATIVE		AUDIT_ARCH_MIPS

#elif __MIPSEL__

#define ARCH_NATIVE		AUDIT_ARCH_MIPSEL

#endif /* _MIPS_SIM_ABI32 */

#elif __mips__ && _MIPS_SIM == _MIPS_SIM_ABI64

#if __MIPSEB__

#define ARCH_NATIVE		AUDIT_ARCH_MIPS64

#elif __MIPSEL__

#define ARCH_NATIVE		AUDIT_ARCH_MIPSEL64

#endif /* _MIPS_SIM_ABI64 */

#elif __mips__ && _MIPS_SIM == _MIPS_SIM_NABI32

#if __MIPSEB__

#define ARCH_NATIVE		AUDIT_ARCH_MIPS64N32

#elif __MIPSEL__

#define ARCH_NATIVE		AUDIT_ARCH_MIPSEL64N32

#endif /* _MIPS_SIM_NABI32 */

#elif __hppa64__

#define ARCH_NATIVE		AUDIT_ARCH_PARISC64

#elif __hppa__

#define ARCH_NATIVE		AUDIT_ARCH_PARISC

#elif __PPC64__

#ifdef __BIG_ENDIAN__

#define ARCH_NATIVE		AUDIT_ARCH_PPC64

#else

#define ARCH_NATIVE		AUDIT_ARCH_PPC64LE

#endif

#elif __PPC__

#define ARCH_NATIVE		AUDIT_ARCH_PPC

#elif __s390x__ /* s390x must be checked before s390 */

#define ARCH_NATIVE		AUDIT_ARCH_S390X

#elif __s390__

#define ARCH_NATIVE		AUDIT_ARCH_S390

#else

#error the simulator code needs to know about your machine type

#endif

/* default to the native arch */

uint32_t arch = ARCH_NATIVE;

/**

 * Convert a 16-bit target integer into the host's endianess

 * @param arch the architecture token

 * @param val the 16-bit integer

 *

 * Convert the endianess of the supplied value and return it to the caller.

 *

 */

uint16_t ttoh16(uint32_t arch, uint16_t val)

{

	if (arch & __AUDIT_ARCH_LE)

		return le16toh(val);

	else

		return be16toh(val);

}

/**

 * Convert a 32-bit target integer into the host's endianess

 * @param arch the architecture token

 * @param val the 32-bit integer

 *

 * Convert the endianess of the supplied value and return it to the caller.

 *

 */

uint32_t ttoh32(uint32_t arch, uint32_t val)

{

	if (arch & __AUDIT_ARCH_LE)

		return le32toh(val);

	else

		return be32toh(val);

}

/**

 * Convert a 32-bit host integer into the target's endianess

 * @param arch the architecture token

 * @param val the 32-bit integer

 *

 * Convert the endianess of the supplied value and return it to the caller.

 *

 */

uint32_t htot32(uint32_t arch, uint32_t val)

{

	if (arch & __AUDIT_ARCH_LE)

		return htole32(val);

	else

		return htobe32(val);

}

/**

 * Convert a 64-bit host integer into the target's endianess

 * @param arch the architecture token

 * @param val the 64-bit integer

 *

 * Convert the endianess of the supplied value and return it to the caller.

 *

 */

uint64_t htot64(uint32_t arch, uint64_t val)

{

	if (arch & __AUDIT_ARCH_LE)

		return htole64(val);

	else

		return htobe64(val);

}