/*-

 * Copyright (c) 2003-2009 Tim Kientzle

 * Copyright (c) 2010-2012 Michihiro NAKAJIMA

 * Copyright (c) 2017 Martin Matuska

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#include "archive_platform.h"

#if ARCHIVE_ACL_LIBACL || ARCHIVE_ACL_LIBRICHACL

#ifdef HAVE_ERRNO_H

#include <errno.h>

#endif

#ifdef HAVE_FCNTL_H

#include <fcntl.h>

#endif

#if HAVE_ACL_LIBACL_H

#include <acl/libacl.h>

#endif

#ifdef HAVE_SYS_ACL_H

#include <sys/acl.h>

#endif

#ifdef HAVE_SYS_RICHACL_H

#include <sys/richacl.h>

#endif

#include "archive_entry.h"

#include "archive_private.h"

#include "archive_read_disk_private.h"

#include "archive_write_disk_private.h"

typedef struct {

	const int a_perm;	/* Libarchive permission or flag */

	const int p_perm;	/* Platform permission or flag */

} acl_perm_map_t;

#if ARCHIVE_ACL_LIBACL

static const acl_perm_map_t acl_posix_perm_map[] = {

	{ARCHIVE_ENTRY_ACL_EXECUTE, ACL_EXECUTE},

	{ARCHIVE_ENTRY_ACL_WRITE, ACL_WRITE},

	{ARCHIVE_ENTRY_ACL_READ, ACL_READ},

};

static const int acl_posix_perm_map_size =

    (int)(sizeof(acl_posix_perm_map)/sizeof(acl_posix_perm_map[0]));

#endif /* ARCHIVE_ACL_LIBACL */

#if ARCHIVE_ACL_LIBRICHACL

static const acl_perm_map_t acl_nfs4_perm_map[] = {

	{ARCHIVE_ENTRY_ACL_EXECUTE, RICHACE_EXECUTE},

	{ARCHIVE_ENTRY_ACL_READ_DATA, RICHACE_READ_DATA},

	{ARCHIVE_ENTRY_ACL_LIST_DIRECTORY, RICHACE_LIST_DIRECTORY},

	{ARCHIVE_ENTRY_ACL_WRITE_DATA, RICHACE_WRITE_DATA},

	{ARCHIVE_ENTRY_ACL_ADD_FILE, RICHACE_ADD_FILE},

	{ARCHIVE_ENTRY_ACL_APPEND_DATA, RICHACE_APPEND_DATA},

	{ARCHIVE_ENTRY_ACL_ADD_SUBDIRECTORY, RICHACE_ADD_SUBDIRECTORY},

	{ARCHIVE_ENTRY_ACL_READ_NAMED_ATTRS, RICHACE_READ_NAMED_ATTRS},

	{ARCHIVE_ENTRY_ACL_WRITE_NAMED_ATTRS, RICHACE_WRITE_NAMED_ATTRS},

	{ARCHIVE_ENTRY_ACL_DELETE_CHILD, RICHACE_DELETE_CHILD},

	{ARCHIVE_ENTRY_ACL_READ_ATTRIBUTES, RICHACE_READ_ATTRIBUTES},

	{ARCHIVE_ENTRY_ACL_WRITE_ATTRIBUTES, RICHACE_WRITE_ATTRIBUTES},

	{ARCHIVE_ENTRY_ACL_DELETE, RICHACE_DELETE},

	{ARCHIVE_ENTRY_ACL_READ_ACL, RICHACE_READ_ACL},

	{ARCHIVE_ENTRY_ACL_WRITE_ACL, RICHACE_WRITE_ACL},

	{ARCHIVE_ENTRY_ACL_WRITE_OWNER, RICHACE_WRITE_OWNER},

	{ARCHIVE_ENTRY_ACL_SYNCHRONIZE, RICHACE_SYNCHRONIZE}

};

static const int acl_nfs4_perm_map_size =

    (int)(sizeof(acl_nfs4_perm_map)/sizeof(acl_nfs4_perm_map[0]));

static const acl_perm_map_t acl_nfs4_flag_map[] = {

	{ARCHIVE_ENTRY_ACL_ENTRY_FILE_INHERIT, RICHACE_FILE_INHERIT_ACE},

	{ARCHIVE_ENTRY_ACL_ENTRY_DIRECTORY_INHERIT, RICHACE_DIRECTORY_INHERIT_ACE},

	{ARCHIVE_ENTRY_ACL_ENTRY_NO_PROPAGATE_INHERIT, RICHACE_NO_PROPAGATE_INHERIT_ACE},

	{ARCHIVE_ENTRY_ACL_ENTRY_INHERIT_ONLY, RICHACE_INHERIT_ONLY_ACE},

	{ARCHIVE_ENTRY_ACL_ENTRY_INHERITED, RICHACE_INHERITED_ACE}

};

static const int acl_nfs4_flag_map_size =

    (int)(sizeof(acl_nfs4_flag_map)/sizeof(acl_nfs4_flag_map[0]));

#endif /* ARCHIVE_ACL_LIBRICHACL */

#if ARCHIVE_ACL_LIBACL

/*

 * Translate POSIX.1e ACLs into libarchive internal structure

 */

static int

translate_acl(struct archive_read_disk *a,

    struct archive_entry *entry, acl_t acl, int default_entry_acl_type)

{

	acl_tag_t	 acl_tag;

	acl_entry_t	 acl_entry;

	acl_permset_t	 acl_permset;

	int		 i, entry_acl_type;

	int		 r, s, ae_id, ae_tag, ae_perm;

	void		*q;

	const char	*ae_name;

	s = acl_get_entry(acl, ACL_FIRST_ENTRY, &acl_entry);

	if (s == -1) {

		archive_set_error(&a->archive, errno,

		    "Failed to get first ACL entry");

		return (ARCHIVE_WARN);

	}

	while (s == 1) {

		ae_id = -1;

		ae_name = NULL;

		ae_perm = 0;

		if (acl_get_tag_type(acl_entry, &acl_tag) != 0) {

			archive_set_error(&a->archive, errno,

			    "Failed to get ACL tag type");

			return (ARCHIVE_WARN);

		}

		switch (acl_tag) {

		case ACL_USER:

			q = acl_get_qualifier(acl_entry);

			if (q != NULL) {

				ae_id = (int)*(uid_t *)q;

				acl_free(q);

				ae_name = archive_read_disk_uname(&a->archive,

				    ae_id);

			}

			ae_tag = ARCHIVE_ENTRY_ACL_USER;

			break;

		case ACL_GROUP:

			q = acl_get_qualifier(acl_entry);

			if (q != NULL) {

				ae_id = (int)*(gid_t *)q;

				acl_free(q);

				ae_name = archive_read_disk_gname(&a->archive,

				    ae_id);

			}

			ae_tag = ARCHIVE_ENTRY_ACL_GROUP;

			break;

		case ACL_MASK:

			ae_tag = ARCHIVE_ENTRY_ACL_MASK;

			break;

		case ACL_USER_OBJ:

			ae_tag = ARCHIVE_ENTRY_ACL_USER_OBJ;

			break;

		case ACL_GROUP_OBJ:

			ae_tag = ARCHIVE_ENTRY_ACL_GROUP_OBJ;

			break;

		case ACL_OTHER:

			ae_tag = ARCHIVE_ENTRY_ACL_OTHER;

			break;

		default:

			/* Skip types that libarchive can't support. */

			s = acl_get_entry(acl, ACL_NEXT_ENTRY, &acl_entry);

			continue;

		}

		// XXX acl_type maps to allow/deny/audit/YYYY bits

		entry_acl_type = default_entry_acl_type;

		if (acl_get_permset(acl_entry, &acl_permset) != 0) {

			archive_set_error(&a->archive, errno,

			    "Failed to get ACL permission set");

			return (ARCHIVE_WARN);

		}

		for (i = 0; i < acl_posix_perm_map_size; ++i) {

			r = acl_get_perm(acl_permset,

			    acl_posix_perm_map[i].p_perm);

			if (r == -1) {

				archive_set_error(&a->archive, errno,

				    "Failed to check permission in an ACL "

				    "permission set");

				return (ARCHIVE_WARN);

			} else if (r)

				ae_perm |= acl_posix_perm_map[i].a_perm;

		}

		archive_entry_acl_add_entry(entry, entry_acl_type,

					    ae_perm, ae_tag,

					    ae_id, ae_name);

		s = acl_get_entry(acl, ACL_NEXT_ENTRY, &acl_entry);

		if (s == -1) {

			archive_set_error(&a->archive, errno,

			    "Failed to get next ACL entry");

			return (ARCHIVE_WARN);

		}

	}

	return (ARCHIVE_OK);

}

#endif /* ARCHIVE_ACL_LIBACL */

#if ARCHIVE_ACL_LIBRICHACL

/*

 * Translate RichACL into libarchive internal ACL

 */

static int

translate_richacl(struct archive_read_disk *a, struct archive_entry *entry,

    struct richacl *richacl)

{

	int ae_id, ae_tag, ae_perm;

	int entry_acl_type, i;

	const char *ae_name;

	struct richace *richace;

	richacl_for_each_entry(richace, richacl) {

		ae_name = NULL;

		ae_tag = 0;

		ae_perm = 0;

		ae_id = -1;

		switch (richace->e_type) {

		case RICHACE_ACCESS_ALLOWED_ACE_TYPE:

			entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_ALLOW;

			break;

		case RICHACE_ACCESS_DENIED_ACE_TYPE:

			entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_DENY;

			break;

		default: /* Unknown entry type, skip */

			continue;

		}

		/* Unsupported */

		if (richace->e_flags & RICHACE_UNMAPPED_WHO)

			continue;

		if (richace->e_flags & RICHACE_SPECIAL_WHO) {

			switch (richace->e_id) {

			case RICHACE_OWNER_SPECIAL_ID:

				ae_tag = ARCHIVE_ENTRY_ACL_USER_OBJ;

				break;

			case RICHACE_GROUP_SPECIAL_ID:

				ae_tag = ARCHIVE_ENTRY_ACL_GROUP_OBJ;

				break;

			case RICHACE_EVERYONE_SPECIAL_ID:

				ae_tag = ARCHIVE_ENTRY_ACL_EVERYONE;

				break;

			default: /* Unknown special ID type */

				continue;

			}

		} else {

			ae_id = richace->e_id;

			if (richace->e_flags & RICHACE_IDENTIFIER_GROUP) {

				ae_tag = ARCHIVE_ENTRY_ACL_GROUP;

				ae_name = archive_read_disk_gname(&a->archive,

				    (gid_t)(richace->e_id));

			} else {

				ae_tag = ARCHIVE_ENTRY_ACL_USER;

				ae_name = archive_read_disk_uname(&a->archive,

				    (uid_t)(richace->e_id));

			}

		}

		for (i = 0; i < acl_nfs4_flag_map_size; ++i) {

			if ((richace->e_flags &

			    acl_nfs4_flag_map[i].p_perm) != 0)

				ae_perm |= acl_nfs4_flag_map[i].a_perm;

		}

		for (i = 0; i < acl_nfs4_perm_map_size; ++i) {

			if ((richace->e_mask &

			    acl_nfs4_perm_map[i].p_perm) != 0)

				ae_perm |=

				    acl_nfs4_perm_map[i].a_perm;

		}

		archive_entry_acl_add_entry(entry, entry_acl_type,

		    ae_perm, ae_tag, ae_id, ae_name);

	}

	return (ARCHIVE_OK);

}

#endif	/* ARCHIVE_ACL_LIBRICHACL */

#if ARCHIVE_ACL_LIBRICHACL

static int

_richacl_mode_to_mask(short mode)

{

	int mask = 0;

	if (mode & S_IROTH)

		mask |= RICHACE_POSIX_MODE_READ;

	if (mode & S_IWOTH)

		mask |= RICHACE_POSIX_MODE_WRITE;

	if (mode & S_IXOTH)

		mask |= RICHACE_POSIX_MODE_EXEC;

	return (mask);

}

static void

_richacl_mode_to_masks(struct richacl *richacl, __LA_MODE_T mode)

{

	richacl->a_owner_mask = _richacl_mode_to_mask((mode & 0700) >> 6);

	richacl->a_group_mask = _richacl_mode_to_mask((mode & 0070) >> 3);

	richacl->a_other_mask = _richacl_mode_to_mask(mode & 0007);

}

#endif /* ARCHIVE_ACL_LIBRICHACL */

#if ARCHIVE_ACL_LIBRICHACL

static int

set_richacl(struct archive *a, int fd, const char *name,

    struct archive_acl *abstract_acl, __LA_MODE_T mode,

    int ae_requested_type, const char *tname)

{

	int		 ae_type, ae_permset, ae_tag, ae_id;

	uid_t		 ae_uid;

	gid_t		 ae_gid;

	const char	*ae_name;

	int		 entries;

	int		 i;

	int		 ret;

	int		 e = 0;

	struct richacl  *richacl = NULL;

	struct richace  *richace;

	ret = ARCHIVE_OK;

	entries = archive_acl_reset(abstract_acl, ae_requested_type);

	if (entries == 0)

		return (ARCHIVE_OK);

	if (ae_requested_type != ARCHIVE_ENTRY_ACL_TYPE_NFS4) {

		errno = ENOENT;

		archive_set_error(a, errno, "Unsupported ACL type");

		return (ARCHIVE_FAILED);

	}

	richacl = richacl_alloc(entries);

	if (richacl == NULL) {

		archive_set_error(a, errno,

			"Failed to initialize RichACL working storage");

		return (ARCHIVE_FAILED);

	}

	e = 0;

	while (archive_acl_next(a, abstract_acl, ae_requested_type, &ae_type,

		   &ae_permset, &ae_tag, &ae_id, &ae_name) == ARCHIVE_OK) {

		richace = &(richacl->a_entries[e]);

		richace->e_flags = 0;

		richace->e_mask = 0;

		switch (ae_tag) {

		case ARCHIVE_ENTRY_ACL_USER:

			ae_uid = archive_write_disk_uid(a, ae_name, ae_id);

			richace->e_id = ae_uid;

			break;

		case ARCHIVE_ENTRY_ACL_GROUP:

			ae_gid = archive_write_disk_gid(a, ae_name, ae_id);

			richace->e_id = ae_gid;

			richace->e_flags |= RICHACE_IDENTIFIER_GROUP;

			break;

		case ARCHIVE_ENTRY_ACL_USER_OBJ:

			richace->e_flags |= RICHACE_SPECIAL_WHO;

			richace->e_id = RICHACE_OWNER_SPECIAL_ID;

			break;

		case ARCHIVE_ENTRY_ACL_GROUP_OBJ:

			richace->e_flags |= RICHACE_SPECIAL_WHO;

			richace->e_id = RICHACE_GROUP_SPECIAL_ID;

			break;

		case ARCHIVE_ENTRY_ACL_EVERYONE:

			richace->e_flags |= RICHACE_SPECIAL_WHO;

			richace->e_id = RICHACE_EVERYONE_SPECIAL_ID;

			break;

		default:

			archive_set_error(a, ARCHIVE_ERRNO_MISC,

			    "Unsupported ACL tag");

			ret = ARCHIVE_FAILED;

			goto exit_free;

		}

		switch (ae_type) {

			case ARCHIVE_ENTRY_ACL_TYPE_ALLOW:

				richace->e_type =

				    RICHACE_ACCESS_ALLOWED_ACE_TYPE;

				break;

			case ARCHIVE_ENTRY_ACL_TYPE_DENY:

				richace->e_type =

				    RICHACE_ACCESS_DENIED_ACE_TYPE;

				break;

			case ARCHIVE_ENTRY_ACL_TYPE_AUDIT:

			case ARCHIVE_ENTRY_ACL_TYPE_ALARM:

				break;

		default:

			archive_set_error(a, ARCHIVE_ERRNO_MISC,

			    "Unsupported ACL entry type");

			ret = ARCHIVE_FAILED;

			goto exit_free;

		}

		for (i = 0; i < acl_nfs4_perm_map_size; ++i) {

			if (ae_permset & acl_nfs4_perm_map[i].a_perm)

				richace->e_mask |= acl_nfs4_perm_map[i].p_perm;

		}

		for (i = 0; i < acl_nfs4_flag_map_size; ++i) {

			if (ae_permset &

			    acl_nfs4_flag_map[i].a_perm)

				richace->e_flags |= acl_nfs4_flag_map[i].p_perm;

		}

	e++;

	}

	/* Fill RichACL masks */

	_richacl_mode_to_masks(richacl, mode);

	if (fd >= 0) {

		if (richacl_set_fd(fd, richacl) == 0)

			ret = ARCHIVE_OK;

		else {

			if (errno == EOPNOTSUPP) {

				/* Filesystem doesn't support ACLs */

				ret = ARCHIVE_OK;

			} else {

				archive_set_error(a, errno,

				    "Failed to set richacl on fd: %s", tname);

				ret = ARCHIVE_WARN;

			}

		}

	} else if (richacl_set_file(name, richacl) != 0) {

		if (errno == EOPNOTSUPP) {

			/* Filesystem doesn't support ACLs */

			ret = ARCHIVE_OK;

		} else {

			archive_set_error(a, errno, "Failed to set richacl: %s",

			    tname);

			ret = ARCHIVE_WARN;

		}

	}

exit_free:

	richacl_free(richacl);

	return (ret);

}

#endif /* ARCHIVE_ACL_RICHACL */

#if ARCHIVE_ACL_LIBACL

static int

set_acl(struct archive *a, int fd, const char *name,

    struct archive_acl *abstract_acl,

    int ae_requested_type, const char *tname)

{

	int		 acl_type = 0;

	int		 ae_type, ae_permset, ae_tag, ae_id;

	uid_t		 ae_uid;

	gid_t		 ae_gid;

	const char	*ae_name;

	int		 entries;

	int		 i;

	int		 ret;

	acl_t		 acl = NULL;

	acl_entry_t	 acl_entry;

	acl_permset_t	 acl_permset;

	ret = ARCHIVE_OK;

	entries = archive_acl_reset(abstract_acl, ae_requested_type);

	if (entries == 0)

		return (ARCHIVE_OK);

	switch (ae_requested_type) {

	case ARCHIVE_ENTRY_ACL_TYPE_ACCESS:

		acl_type = ACL_TYPE_ACCESS;

		break;

	case ARCHIVE_ENTRY_ACL_TYPE_DEFAULT:

		acl_type = ACL_TYPE_DEFAULT;

		break;

	default:

		errno = ENOENT;

		archive_set_error(a, errno, "Unsupported ACL type");

		return (ARCHIVE_FAILED);

	}

	acl = acl_init(entries);

	if (acl == (acl_t)NULL) {

		archive_set_error(a, errno,

		    "Failed to initialize ACL working storage");

		return (ARCHIVE_FAILED);

	}

	while (archive_acl_next(a, abstract_acl, ae_requested_type, &ae_type,

		   &ae_permset, &ae_tag, &ae_id, &ae_name) == ARCHIVE_OK) {

		if (acl_create_entry(&acl, &acl_entry) != 0) {

			archive_set_error(a, errno,

			    "Failed to create a new ACL entry");

			ret = ARCHIVE_FAILED;

			goto exit_free;

		}

		switch (ae_tag) {

		case ARCHIVE_ENTRY_ACL_USER:

			ae_uid = archive_write_disk_uid(a, ae_name, ae_id);

			acl_set_tag_type(acl_entry, ACL_USER);

			acl_set_qualifier(acl_entry, &ae_uid);

			break;

		case ARCHIVE_ENTRY_ACL_GROUP:

			ae_gid = archive_write_disk_gid(a, ae_name, ae_id);

			acl_set_tag_type(acl_entry, ACL_GROUP);

			acl_set_qualifier(acl_entry, &ae_gid);

			break;

		case ARCHIVE_ENTRY_ACL_USER_OBJ:

			acl_set_tag_type(acl_entry, ACL_USER_OBJ);

			break;

		case ARCHIVE_ENTRY_ACL_GROUP_OBJ:

			acl_set_tag_type(acl_entry, ACL_GROUP_OBJ);

			break;

		case ARCHIVE_ENTRY_ACL_MASK:

			acl_set_tag_type(acl_entry, ACL_MASK);

			break;

		case ARCHIVE_ENTRY_ACL_OTHER:

			acl_set_tag_type(acl_entry, ACL_OTHER);

			break;

		default:

			archive_set_error(a, ARCHIVE_ERRNO_MISC,

			    "Unsupported ACL tag");

			ret = ARCHIVE_FAILED;

			goto exit_free;

		}

		if (acl_get_permset(acl_entry, &acl_permset) != 0) {

			archive_set_error(a, errno,

			    "Failed to get ACL permission set");

			ret = ARCHIVE_FAILED;

			goto exit_free;

		}

		if (acl_clear_perms(acl_permset) != 0) {

			archive_set_error(a, errno,

			    "Failed to clear ACL permissions");

			ret = ARCHIVE_FAILED;

			goto exit_free;

		}

		for (i = 0; i < acl_posix_perm_map_size; ++i) {

			if (ae_permset & acl_posix_perm_map[i].a_perm) {

				if (acl_add_perm(acl_permset,

				    acl_posix_perm_map[i].p_perm) != 0) {

					archive_set_error(a, errno,

					    "Failed to add ACL permission");

					ret = ARCHIVE_FAILED;

					goto exit_free;

				}

			}

		}

	}

	if (fd >= 0 && ae_requested_type == ARCHIVE_ENTRY_ACL_TYPE_ACCESS) {

		if (acl_set_fd(fd, acl) == 0)

			ret = ARCHIVE_OK;

		else {

			if (errno == EOPNOTSUPP) {

				/* Filesystem doesn't support ACLs */

				ret = ARCHIVE_OK;

			} else {

				archive_set_error(a, errno,

				    "Failed to set acl on fd: %s", tname);

				ret = ARCHIVE_WARN;

			}

		}

	} else if (acl_set_file(name, acl_type, acl) != 0) {

		if (errno == EOPNOTSUPP) {

			/* Filesystem doesn't support ACLs */

			ret = ARCHIVE_OK;

		} else {

			archive_set_error(a, errno, "Failed to set acl: %s",

			    tname);

			ret = ARCHIVE_WARN;

		}

	}

exit_free:

	acl_free(acl);

	return (ret);

}

#endif /* ARCHIVE_ACL_LIBACL */

int

archive_read_disk_entry_setup_acls(struct archive_read_disk *a,

    struct archive_entry *entry, int *fd)

{

	const char	*accpath;

	int		r;

#if ARCHIVE_ACL_LIBACL

	acl_t		acl;

#endif

#if ARCHIVE_ACL_LIBRICHACL

	struct richacl *richacl;

	mode_t		mode;

#endif

	accpath = NULL;

	r = ARCHIVE_OK;

	/* For default ACLs we need reachable accpath */

	if (*fd < 0 || S_ISDIR(archive_entry_mode(entry))) {

		accpath = archive_read_disk_entry_setup_path(a, entry, fd);

		if (accpath == NULL)

			return (ARCHIVE_WARN);

	}

	archive_entry_acl_clear(entry);

#if ARCHIVE_ACL_LIBACL

	acl = NULL;

#endif

#if ARCHIVE_ACL_LIBRICHACL

	richacl = NULL;

#endif

#if ARCHIVE_ACL_LIBRICHACL

	/* Try NFSv4 ACL first. */

	if (*fd >= 0)

		richacl = richacl_get_fd(*fd);

	else if ((!a->follow_symlinks)

	    && (archive_entry_filetype(entry) == AE_IFLNK))

		/* We can't get the ACL of a symlink, so we assume it can't

		   have one */

		richacl = NULL;

	else

		richacl = richacl_get_file(accpath);

	/* Ignore "trivial" ACLs that just mirror the file mode. */

	if (richacl != NULL) {

		mode = archive_entry_mode(entry);

		if (richacl_equiv_mode(richacl, &mode) == 0) {

			richacl_free(richacl);

			richacl = NULL;

			return (ARCHIVE_OK);

		}

	}

	if (richacl != NULL) {

		r = translate_richacl(a, entry, richacl);

		richacl_free(richacl);

		richacl = NULL;

		if (r != ARCHIVE_OK) {

			archive_set_error(&a->archive, errno,

			"Couldn't translate NFSv4 ACLs");

		}

		return (r);

	}

#endif	/* ARCHIVE_ACL_LIBRICHACL */

#if ARCHIVE_ACL_LIBACL

	/* Retrieve access ACL from file. */

	if (*fd >= 0)

		acl = acl_get_fd(*fd);

	else if ((!a->follow_symlinks)

	    && (archive_entry_filetype(entry) == AE_IFLNK))

		/* We can't get the ACL of a symlink, so we assume it can't

		   have one. */

		acl = NULL;

	else

		acl = acl_get_file(accpath, ACL_TYPE_ACCESS);

	if (acl != NULL) {

		r = translate_acl(a, entry, acl, ARCHIVE_ENTRY_ACL_TYPE_ACCESS);

		acl_free(acl);

		acl = NULL;

		if (r != ARCHIVE_OK) {

			archive_set_error(&a->archive, errno,

			    "Couldn't translate access ACLs");

			return (r);

		}

	}

	/* Only directories can have default ACLs. */

	if (S_ISDIR(archive_entry_mode(entry))) {

		acl = acl_get_file(accpath, ACL_TYPE_DEFAULT);

		if (acl != NULL) {

			r = translate_acl(a, entry, acl,

			    ARCHIVE_ENTRY_ACL_TYPE_DEFAULT);

			acl_free(acl);

			if (r != ARCHIVE_OK) {

				archive_set_error(&a->archive, errno,

				    "Couldn't translate default ACLs");

				return (r);

			}

		}

	}

#endif	/* ARCHIVE_ACL_LIBACL */

	return (r);

}

int

archive_write_disk_set_acls(struct archive *a, int fd, const char *name,

    struct archive_acl *abstract_acl, __LA_MODE_T mode)

{

	int		ret = ARCHIVE_OK;

#if !ARCHIVE_ACL_LIBRICHACL

	(void)mode;	/* UNUSED */

#endif

#if ARCHIVE_ACL_LIBRICHACL

	if ((archive_acl_types(abstract_acl)

	    & ARCHIVE_ENTRY_ACL_TYPE_NFS4) != 0) {

		ret = set_richacl(a, fd, name, abstract_acl, mode,

		    ARCHIVE_ENTRY_ACL_TYPE_NFS4, "nfs4");

	}

#if ARCHIVE_ACL_LIBACL

	else

#endif

#endif	/* ARCHIVE_ACL_LIBRICHACL */

#if ARCHIVE_ACL_LIBACL

	if ((archive_acl_types(abstract_acl)

	    & ARCHIVE_ENTRY_ACL_TYPE_POSIX1E) != 0) {

		if ((archive_acl_types(abstract_acl)

		    & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0) {

			ret = set_acl(a, fd, name, abstract_acl,

			    ARCHIVE_ENTRY_ACL_TYPE_ACCESS, "access");

			if (ret != ARCHIVE_OK)

				return (ret);

		}

		if ((archive_acl_types(abstract_acl)

		    & ARCHIVE_ENTRY_ACL_TYPE_DEFAULT) != 0)

			ret = set_acl(a, fd, name, abstract_acl,

			    ARCHIVE_ENTRY_ACL_TYPE_DEFAULT, "default");

	}

#endif	/* ARCHIVE_ACL_LIBACL */

	return (ret);

}

#endif /* ARCHIVE_ACL_LIBACL || ARCHIVE_ACL_LIBRICHACL */