4a7f683434
Vendor changes (FreeBSD-related): Break ACL read/write code into platform-specific source files Vendor bugfixes (FreeBSD-related): PR 867 (bsdcpio): show numeric uid/gid when names are not found PR 870 (seekable zip): accept files with valid ZIP64 EOCD headers PR 880 (pax): Fix handling of "size" pax header keyword PR 887 (crypto): Discard 3072 bytes instead of 1024 of first keystream OSS-Fuzz issue 806 (mtree): rework mtree_atol10 integer parser Unbreak static dependency on libbz2
389 lines
10 KiB
C
389 lines
10 KiB
C
/*-
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* Copyright (c) 2003-2010 Tim Kientzle
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "archive_platform.h"
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#ifdef HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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#if HAVE_ACL_LIBACL_H
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#include <acl/libacl.h>
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#endif
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#ifdef HAVE_SYS_ACL_H
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#include <sys/acl.h>
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#endif
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#if HAVE_SYS_RICHACL_H
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#include <sys/richacl.h>
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#endif
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#include "archive.h"
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#include "archive_entry.h"
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#include "archive_write_disk_private.h"
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#include "archive_acl_maps.h"
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#if ARCHIVE_ACL_LIBRICHACL
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static int
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_richacl_mode_to_mask(short mode)
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{
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int mask = 0;
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if (mode & S_IROTH)
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mask |= RICHACE_POSIX_MODE_READ;
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if (mode & S_IWOTH)
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mask |= RICHACE_POSIX_MODE_WRITE;
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if (mode & S_IXOTH)
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mask |= RICHACE_POSIX_MODE_EXEC;
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return (mask);
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}
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static void
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_richacl_mode_to_masks(struct richacl *richacl, __LA_MODE_T mode)
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{
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richacl->a_owner_mask = _richacl_mode_to_mask((mode & 0700) >> 6);
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richacl->a_group_mask = _richacl_mode_to_mask((mode & 0070) >> 3);
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richacl->a_other_mask = _richacl_mode_to_mask(mode & 0007);
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}
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#endif /* ARCHIVE_ACL_LIBRICHACL */
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#if ARCHIVE_ACL_LIBRICHACL
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static int
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set_richacl(struct archive *a, int fd, const char *name,
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struct archive_acl *abstract_acl, __LA_MODE_T mode,
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int ae_requested_type, const char *tname)
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{
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int ae_type, ae_permset, ae_tag, ae_id;
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uid_t ae_uid;
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gid_t ae_gid;
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const char *ae_name;
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int entries;
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int i;
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int ret;
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int e = 0;
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struct richacl *richacl = NULL;
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struct richace *richace;
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ret = ARCHIVE_OK;
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entries = archive_acl_reset(abstract_acl, ae_requested_type);
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if (entries == 0)
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return (ARCHIVE_OK);
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if (ae_requested_type != ARCHIVE_ENTRY_ACL_TYPE_NFS4) {
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errno = ENOENT;
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archive_set_error(a, errno, "Unsupported ACL type");
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return (ARCHIVE_FAILED);
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}
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richacl = richacl_alloc(entries);
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if (richacl == NULL) {
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archive_set_error(a, errno,
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"Failed to initialize RichACL working storage");
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return (ARCHIVE_FAILED);
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}
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e = 0;
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while (archive_acl_next(a, abstract_acl, ae_requested_type, &ae_type,
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&ae_permset, &ae_tag, &ae_id, &ae_name) == ARCHIVE_OK) {
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richace = &(richacl->a_entries[e]);
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richace->e_flags = 0;
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richace->e_mask = 0;
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switch (ae_tag) {
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case ARCHIVE_ENTRY_ACL_USER:
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ae_uid = archive_write_disk_uid(a, ae_name, ae_id);
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richace->e_id = ae_uid;
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break;
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case ARCHIVE_ENTRY_ACL_GROUP:
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ae_gid = archive_write_disk_gid(a, ae_name, ae_id);
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richace->e_id = ae_gid;
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richace->e_flags |= RICHACE_IDENTIFIER_GROUP;
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break;
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case ARCHIVE_ENTRY_ACL_USER_OBJ:
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richace->e_flags |= RICHACE_SPECIAL_WHO;
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richace->e_id = RICHACE_OWNER_SPECIAL_ID;
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break;
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case ARCHIVE_ENTRY_ACL_GROUP_OBJ:
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richace->e_flags |= RICHACE_SPECIAL_WHO;
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richace->e_id = RICHACE_GROUP_SPECIAL_ID;
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break;
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case ARCHIVE_ENTRY_ACL_EVERYONE:
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richace->e_flags |= RICHACE_SPECIAL_WHO;
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richace->e_id = RICHACE_EVERYONE_SPECIAL_ID;
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break;
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default:
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archive_set_error(a, ARCHIVE_ERRNO_MISC,
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"Unsupported ACL tag");
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ret = ARCHIVE_FAILED;
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goto exit_free;
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}
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switch (ae_type) {
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case ARCHIVE_ENTRY_ACL_TYPE_ALLOW:
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richace->e_type =
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RICHACE_ACCESS_ALLOWED_ACE_TYPE;
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break;
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case ARCHIVE_ENTRY_ACL_TYPE_DENY:
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richace->e_type =
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RICHACE_ACCESS_DENIED_ACE_TYPE;
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break;
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case ARCHIVE_ENTRY_ACL_TYPE_AUDIT:
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case ARCHIVE_ENTRY_ACL_TYPE_ALARM:
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break;
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default:
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archive_set_error(a, ARCHIVE_ERRNO_MISC,
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"Unsupported ACL entry type");
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ret = ARCHIVE_FAILED;
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goto exit_free;
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}
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for (i = 0; i < acl_nfs4_perm_map_size; ++i) {
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if (ae_permset & acl_nfs4_perm_map[i].a_perm)
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richace->e_mask |= acl_nfs4_perm_map[i].p_perm;
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}
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for (i = 0; i < acl_nfs4_flag_map_size; ++i) {
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if (ae_permset &
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acl_nfs4_flag_map[i].a_perm)
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richace->e_flags |= acl_nfs4_flag_map[i].p_perm;
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}
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e++;
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}
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/* Fill RichACL masks */
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_richacl_mode_to_masks(richacl, mode);
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if (fd >= 0) {
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if (richacl_set_fd(fd, richacl) == 0)
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ret = ARCHIVE_OK;
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else {
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if (errno == EOPNOTSUPP) {
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/* Filesystem doesn't support ACLs */
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ret = ARCHIVE_OK;
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} else {
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archive_set_error(a, errno,
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"Failed to set richacl on fd: %s", tname);
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ret = ARCHIVE_WARN;
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}
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}
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} else if (richacl_set_file(name, richacl) != 0) {
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if (errno == EOPNOTSUPP) {
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/* Filesystem doesn't support ACLs */
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ret = ARCHIVE_OK;
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} else {
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archive_set_error(a, errno, "Failed to set richacl: %s",
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tname);
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ret = ARCHIVE_WARN;
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}
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}
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exit_free:
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richacl_free(richacl);
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return (ret);
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}
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#endif /* ARCHIVE_ACL_RICHACL */
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#if ARCHIVE_ACL_LIBACL
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static int
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set_acl(struct archive *a, int fd, const char *name,
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struct archive_acl *abstract_acl,
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int ae_requested_type, const char *tname)
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{
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int acl_type = 0;
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int ae_type, ae_permset, ae_tag, ae_id;
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uid_t ae_uid;
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gid_t ae_gid;
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const char *ae_name;
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int entries;
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int i;
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int ret;
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acl_t acl = NULL;
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acl_entry_t acl_entry;
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acl_permset_t acl_permset;
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ret = ARCHIVE_OK;
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entries = archive_acl_reset(abstract_acl, ae_requested_type);
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if (entries == 0)
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return (ARCHIVE_OK);
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switch (ae_requested_type) {
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case ARCHIVE_ENTRY_ACL_TYPE_ACCESS:
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acl_type = ACL_TYPE_ACCESS;
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break;
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case ARCHIVE_ENTRY_ACL_TYPE_DEFAULT:
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acl_type = ACL_TYPE_DEFAULT;
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break;
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default:
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errno = ENOENT;
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archive_set_error(a, errno, "Unsupported ACL type");
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return (ARCHIVE_FAILED);
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}
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acl = acl_init(entries);
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if (acl == (acl_t)NULL) {
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archive_set_error(a, errno,
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"Failed to initialize ACL working storage");
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return (ARCHIVE_FAILED);
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}
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while (archive_acl_next(a, abstract_acl, ae_requested_type, &ae_type,
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&ae_permset, &ae_tag, &ae_id, &ae_name) == ARCHIVE_OK) {
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if (acl_create_entry(&acl, &acl_entry) != 0) {
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archive_set_error(a, errno,
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"Failed to create a new ACL entry");
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ret = ARCHIVE_FAILED;
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goto exit_free;
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}
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switch (ae_tag) {
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case ARCHIVE_ENTRY_ACL_USER:
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ae_uid = archive_write_disk_uid(a, ae_name, ae_id);
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acl_set_tag_type(acl_entry, ACL_USER);
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acl_set_qualifier(acl_entry, &ae_uid);
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break;
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case ARCHIVE_ENTRY_ACL_GROUP:
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ae_gid = archive_write_disk_gid(a, ae_name, ae_id);
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acl_set_tag_type(acl_entry, ACL_GROUP);
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acl_set_qualifier(acl_entry, &ae_gid);
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break;
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case ARCHIVE_ENTRY_ACL_USER_OBJ:
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acl_set_tag_type(acl_entry, ACL_USER_OBJ);
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break;
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case ARCHIVE_ENTRY_ACL_GROUP_OBJ:
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acl_set_tag_type(acl_entry, ACL_GROUP_OBJ);
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break;
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case ARCHIVE_ENTRY_ACL_MASK:
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acl_set_tag_type(acl_entry, ACL_MASK);
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break;
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case ARCHIVE_ENTRY_ACL_OTHER:
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acl_set_tag_type(acl_entry, ACL_OTHER);
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break;
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default:
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archive_set_error(a, ARCHIVE_ERRNO_MISC,
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"Unsupported ACL tag");
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ret = ARCHIVE_FAILED;
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goto exit_free;
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}
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if (acl_get_permset(acl_entry, &acl_permset) != 0) {
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archive_set_error(a, errno,
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"Failed to get ACL permission set");
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ret = ARCHIVE_FAILED;
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goto exit_free;
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}
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if (acl_clear_perms(acl_permset) != 0) {
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archive_set_error(a, errno,
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"Failed to clear ACL permissions");
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ret = ARCHIVE_FAILED;
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goto exit_free;
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}
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for (i = 0; i < acl_posix_perm_map_size; ++i) {
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if (ae_permset & acl_posix_perm_map[i].a_perm) {
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if (acl_add_perm(acl_permset,
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acl_posix_perm_map[i].p_perm) != 0) {
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archive_set_error(a, errno,
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"Failed to add ACL permission");
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ret = ARCHIVE_FAILED;
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goto exit_free;
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}
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}
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}
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}
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if (fd >= 0 && ae_requested_type == ARCHIVE_ENTRY_ACL_TYPE_ACCESS) {
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if (acl_set_fd(fd, acl) == 0)
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ret = ARCHIVE_OK;
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else {
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if (errno == EOPNOTSUPP) {
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/* Filesystem doesn't support ACLs */
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ret = ARCHIVE_OK;
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} else {
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archive_set_error(a, errno,
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"Failed to set acl on fd: %s", tname);
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ret = ARCHIVE_WARN;
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}
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}
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} else if (acl_set_file(name, acl_type, acl) != 0) {
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if (errno == EOPNOTSUPP) {
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/* Filesystem doesn't support ACLs */
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ret = ARCHIVE_OK;
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} else {
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archive_set_error(a, errno, "Failed to set acl: %s",
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tname);
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ret = ARCHIVE_WARN;
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}
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}
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exit_free:
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acl_free(acl);
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return (ret);
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}
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#endif /* ARCHIVE_ACL_LIBACL */
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int
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archive_write_disk_set_acls(struct archive *a, int fd, const char *name,
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struct archive_acl *abstract_acl, __LA_MODE_T mode)
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{
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int ret = ARCHIVE_OK;
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#if !ARCHIVE_ACL_LIBRICHACL
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(void)mode; /* UNUSED */
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#endif
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#if ARCHIVE_ACL_LIBRICHACL
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if ((archive_acl_types(abstract_acl)
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& ARCHIVE_ENTRY_ACL_TYPE_NFS4) != 0) {
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ret = set_richacl(a, fd, name, abstract_acl, mode,
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ARCHIVE_ENTRY_ACL_TYPE_NFS4, "nfs4");
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}
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#if ARCHIVE_ACL_LIBACL
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else
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#endif
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#endif /* ARCHIVE_ACL_LIBRICHACL */
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#if ARCHIVE_ACL_LIBACL
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if ((archive_acl_types(abstract_acl)
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& ARCHIVE_ENTRY_ACL_TYPE_POSIX1E) != 0) {
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if ((archive_acl_types(abstract_acl)
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& ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0) {
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ret = set_acl(a, fd, name, abstract_acl,
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ARCHIVE_ENTRY_ACL_TYPE_ACCESS, "access");
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if (ret != ARCHIVE_OK)
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return (ret);
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}
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if ((archive_acl_types(abstract_acl)
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& ARCHIVE_ENTRY_ACL_TYPE_DEFAULT) != 0)
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ret = set_acl(a, fd, name, abstract_acl,
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ARCHIVE_ENTRY_ACL_TYPE_DEFAULT, "default");
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}
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#endif /* ARCHIVE_ACL_LIBACL */
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return (ret);
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}
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