1279 lines
31 KiB
C
1279 lines
31 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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* 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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__FBSDID("$FreeBSD$");
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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_LIMITS_H
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#include <limits.h>
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#endif
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#ifdef HAVE_WCHAR_H
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#include <wchar.h>
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#endif
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#include "archive_acl_private.h"
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#include "archive_entry.h"
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#include "archive_private.h"
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#undef max
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#define max(a, b) ((a)>(b)?(a):(b))
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#ifndef HAVE_WMEMCMP
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/* Good enough for simple equality testing, but not for sorting. */
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#define wmemcmp(a,b,i) memcmp((a), (b), (i) * sizeof(wchar_t))
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#endif
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static int acl_special(struct archive_acl *acl,
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int type, int permset, int tag);
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static struct archive_acl_entry *acl_new_entry(struct archive_acl *acl,
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int type, int permset, int tag, int id);
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static int archive_acl_add_entry_len_l(struct archive_acl *acl,
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int type, int permset, int tag, int id, const char *name,
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size_t len, struct archive_string_conv *sc);
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static int isint_w(const wchar_t *start, const wchar_t *end, int *result);
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static int ismode_w(const wchar_t *start, const wchar_t *end, int *result);
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static void next_field_w(const wchar_t **wp, const wchar_t **start,
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const wchar_t **end, wchar_t *sep);
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static int prefix_w(const wchar_t *start, const wchar_t *end,
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const wchar_t *test);
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static void append_entry_w(wchar_t **wp, const wchar_t *prefix, int tag,
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const wchar_t *wname, int perm, int id);
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static void append_id_w(wchar_t **wp, int id);
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static int isint(const char *start, const char *end, int *result);
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static int ismode(const char *start, const char *end, int *result);
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static void next_field(const char **p, const char **start,
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const char **end, char *sep);
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static int prefix_c(const char *start, const char *end,
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const char *test);
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static void append_entry(char **p, const char *prefix, int tag,
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const char *name, int perm, int id);
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static void append_id(char **p, int id);
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void
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archive_acl_clear(struct archive_acl *acl)
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{
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struct archive_acl_entry *ap;
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while (acl->acl_head != NULL) {
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ap = acl->acl_head->next;
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archive_mstring_clean(&acl->acl_head->name);
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free(acl->acl_head);
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acl->acl_head = ap;
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}
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if (acl->acl_text_w != NULL) {
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free(acl->acl_text_w);
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acl->acl_text_w = NULL;
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}
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if (acl->acl_text != NULL) {
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free(acl->acl_text);
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acl->acl_text = NULL;
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}
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acl->acl_p = NULL;
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acl->acl_state = 0; /* Not counting. */
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}
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void
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archive_acl_copy(struct archive_acl *dest, struct archive_acl *src)
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{
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struct archive_acl_entry *ap, *ap2;
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archive_acl_clear(dest);
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dest->mode = src->mode;
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ap = src->acl_head;
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while (ap != NULL) {
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ap2 = acl_new_entry(dest,
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ap->type, ap->permset, ap->tag, ap->id);
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if (ap2 != NULL)
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archive_mstring_copy(&ap2->name, &ap->name);
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ap = ap->next;
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}
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}
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int
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archive_acl_add_entry(struct archive_acl *acl,
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int type, int permset, int tag, int id, const char *name)
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{
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struct archive_acl_entry *ap;
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if (acl_special(acl, type, permset, tag) == 0)
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return ARCHIVE_OK;
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ap = acl_new_entry(acl, type, permset, tag, id);
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if (ap == NULL) {
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/* XXX Error XXX */
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return ARCHIVE_FAILED;
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}
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if (name != NULL && *name != '\0')
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archive_mstring_copy_mbs(&ap->name, name);
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else
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archive_mstring_clean(&ap->name);
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return ARCHIVE_OK;
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}
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int
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archive_acl_add_entry_w_len(struct archive_acl *acl,
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int type, int permset, int tag, int id, const wchar_t *name, size_t len)
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{
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struct archive_acl_entry *ap;
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if (acl_special(acl, type, permset, tag) == 0)
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return ARCHIVE_OK;
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ap = acl_new_entry(acl, type, permset, tag, id);
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if (ap == NULL) {
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/* XXX Error XXX */
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return ARCHIVE_FAILED;
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}
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if (name != NULL && *name != L'\0' && len > 0)
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archive_mstring_copy_wcs_len(&ap->name, name, len);
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else
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archive_mstring_clean(&ap->name);
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return ARCHIVE_OK;
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}
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static int
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archive_acl_add_entry_len_l(struct archive_acl *acl,
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int type, int permset, int tag, int id, const char *name, size_t len,
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struct archive_string_conv *sc)
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{
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struct archive_acl_entry *ap;
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int r;
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if (acl_special(acl, type, permset, tag) == 0)
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return ARCHIVE_OK;
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ap = acl_new_entry(acl, type, permset, tag, id);
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if (ap == NULL) {
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/* XXX Error XXX */
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return ARCHIVE_FAILED;
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}
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if (name != NULL && *name != '\0' && len > 0) {
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r = archive_mstring_copy_mbs_len_l(&ap->name, name, len, sc);
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} else {
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r = 0;
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archive_mstring_clean(&ap->name);
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}
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if (r == 0)
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return (ARCHIVE_OK);
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else if (errno == ENOMEM)
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return (ARCHIVE_FATAL);
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else
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return (ARCHIVE_WARN);
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}
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/*
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* If this ACL entry is part of the standard POSIX permissions set,
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* store the permissions in the stat structure and return zero.
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*/
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static int
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acl_special(struct archive_acl *acl, int type, int permset, int tag)
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{
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if (type == ARCHIVE_ENTRY_ACL_TYPE_ACCESS
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&& ((permset & ~007) == 0)) {
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switch (tag) {
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case ARCHIVE_ENTRY_ACL_USER_OBJ:
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acl->mode &= ~0700;
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acl->mode |= (permset & 7) << 6;
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return (0);
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case ARCHIVE_ENTRY_ACL_GROUP_OBJ:
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acl->mode &= ~0070;
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acl->mode |= (permset & 7) << 3;
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return (0);
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case ARCHIVE_ENTRY_ACL_OTHER:
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acl->mode &= ~0007;
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acl->mode |= permset & 7;
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return (0);
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}
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}
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return (1);
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}
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/*
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* Allocate and populate a new ACL entry with everything but the
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* name.
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*/
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static struct archive_acl_entry *
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acl_new_entry(struct archive_acl *acl,
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int type, int permset, int tag, int id)
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{
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struct archive_acl_entry *ap, *aq;
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/* Type argument must be a valid NFS4 or POSIX.1e type.
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* The type must agree with anything already set and
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* the permset must be compatible. */
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if (type & ARCHIVE_ENTRY_ACL_TYPE_NFS4) {
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if (acl->acl_types & ~ARCHIVE_ENTRY_ACL_TYPE_NFS4) {
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return (NULL);
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}
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if (permset &
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~(ARCHIVE_ENTRY_ACL_PERMS_NFS4
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| ARCHIVE_ENTRY_ACL_INHERITANCE_NFS4)) {
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return (NULL);
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}
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} else if (type & ARCHIVE_ENTRY_ACL_TYPE_POSIX1E) {
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if (acl->acl_types & ~ARCHIVE_ENTRY_ACL_TYPE_POSIX1E) {
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return (NULL);
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}
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if (permset & ~ARCHIVE_ENTRY_ACL_PERMS_POSIX1E) {
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return (NULL);
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}
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} else {
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return (NULL);
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}
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/* Verify the tag is valid and compatible with NFS4 or POSIX.1e. */
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switch (tag) {
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case ARCHIVE_ENTRY_ACL_USER:
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case ARCHIVE_ENTRY_ACL_USER_OBJ:
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case ARCHIVE_ENTRY_ACL_GROUP:
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case ARCHIVE_ENTRY_ACL_GROUP_OBJ:
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/* Tags valid in both NFS4 and POSIX.1e */
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break;
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case ARCHIVE_ENTRY_ACL_MASK:
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case ARCHIVE_ENTRY_ACL_OTHER:
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/* Tags valid only in POSIX.1e. */
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if (type & ~ARCHIVE_ENTRY_ACL_TYPE_POSIX1E) {
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return (NULL);
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}
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break;
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case ARCHIVE_ENTRY_ACL_EVERYONE:
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/* Tags valid only in NFS4. */
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if (type & ~ARCHIVE_ENTRY_ACL_TYPE_NFS4) {
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return (NULL);
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}
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break;
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default:
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/* No other values are valid. */
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return (NULL);
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}
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if (acl->acl_text_w != NULL) {
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free(acl->acl_text_w);
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acl->acl_text_w = NULL;
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}
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if (acl->acl_text != NULL) {
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free(acl->acl_text);
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acl->acl_text = NULL;
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}
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/* If there's a matching entry already in the list, overwrite it. */
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ap = acl->acl_head;
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aq = NULL;
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while (ap != NULL) {
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if (ap->type == type && ap->tag == tag && ap->id == id) {
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ap->permset = permset;
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return (ap);
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}
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aq = ap;
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ap = ap->next;
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}
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/* Add a new entry to the end of the list. */
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ap = (struct archive_acl_entry *)malloc(sizeof(*ap));
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if (ap == NULL)
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return (NULL);
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memset(ap, 0, sizeof(*ap));
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if (aq == NULL)
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acl->acl_head = ap;
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else
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aq->next = ap;
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ap->type = type;
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ap->tag = tag;
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ap->id = id;
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ap->permset = permset;
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acl->acl_types |= type;
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return (ap);
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}
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/*
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* Return a count of entries matching "want_type".
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*/
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int
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archive_acl_count(struct archive_acl *acl, int want_type)
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{
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int count;
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struct archive_acl_entry *ap;
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count = 0;
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ap = acl->acl_head;
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while (ap != NULL) {
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if ((ap->type & want_type) != 0)
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count++;
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ap = ap->next;
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}
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if (count > 0 && ((want_type & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0))
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count += 3;
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return (count);
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}
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/*
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* Prepare for reading entries from the ACL data. Returns a count
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* of entries matching "want_type", or zero if there are no
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* non-extended ACL entries of that type.
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*/
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int
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archive_acl_reset(struct archive_acl *acl, int want_type)
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{
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int count, cutoff;
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count = archive_acl_count(acl, want_type);
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/*
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* If the only entries are the three standard ones,
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* then don't return any ACL data. (In this case,
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* client can just use chmod(2) to set permissions.)
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*/
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if ((want_type & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0)
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cutoff = 3;
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else
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cutoff = 0;
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if (count > cutoff)
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acl->acl_state = ARCHIVE_ENTRY_ACL_USER_OBJ;
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else
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acl->acl_state = 0;
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acl->acl_p = acl->acl_head;
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return (count);
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}
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/*
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* Return the next ACL entry in the list. Fake entries for the
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* standard permissions and include them in the returned list.
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*/
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int
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archive_acl_next(struct archive *a, struct archive_acl *acl, int want_type, int *type,
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int *permset, int *tag, int *id, const char **name)
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{
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*name = NULL;
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*id = -1;
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/*
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* The acl_state is either zero (no entries available), -1
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* (reading from list), or an entry type (retrieve that type
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* from ae_stat.aest_mode).
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*/
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if (acl->acl_state == 0)
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return (ARCHIVE_WARN);
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/* The first three access entries are special. */
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if ((want_type & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0) {
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switch (acl->acl_state) {
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case ARCHIVE_ENTRY_ACL_USER_OBJ:
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*permset = (acl->mode >> 6) & 7;
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*type = ARCHIVE_ENTRY_ACL_TYPE_ACCESS;
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*tag = ARCHIVE_ENTRY_ACL_USER_OBJ;
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acl->acl_state = ARCHIVE_ENTRY_ACL_GROUP_OBJ;
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return (ARCHIVE_OK);
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case ARCHIVE_ENTRY_ACL_GROUP_OBJ:
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*permset = (acl->mode >> 3) & 7;
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*type = ARCHIVE_ENTRY_ACL_TYPE_ACCESS;
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*tag = ARCHIVE_ENTRY_ACL_GROUP_OBJ;
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acl->acl_state = ARCHIVE_ENTRY_ACL_OTHER;
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return (ARCHIVE_OK);
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case ARCHIVE_ENTRY_ACL_OTHER:
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*permset = acl->mode & 7;
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*type = ARCHIVE_ENTRY_ACL_TYPE_ACCESS;
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*tag = ARCHIVE_ENTRY_ACL_OTHER;
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acl->acl_state = -1;
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acl->acl_p = acl->acl_head;
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return (ARCHIVE_OK);
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default:
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break;
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}
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}
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while (acl->acl_p != NULL && (acl->acl_p->type & want_type) == 0)
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acl->acl_p = acl->acl_p->next;
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if (acl->acl_p == NULL) {
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acl->acl_state = 0;
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*type = 0;
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*permset = 0;
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*tag = 0;
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*id = -1;
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*name = NULL;
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return (ARCHIVE_EOF); /* End of ACL entries. */
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}
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*type = acl->acl_p->type;
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*permset = acl->acl_p->permset;
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*tag = acl->acl_p->tag;
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*id = acl->acl_p->id;
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if (archive_mstring_get_mbs(a, &acl->acl_p->name, name) != 0) {
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if (errno == ENOMEM)
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return (ARCHIVE_FATAL);
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*name = NULL;
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}
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acl->acl_p = acl->acl_p->next;
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return (ARCHIVE_OK);
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}
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/*
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* Generate a text version of the ACL. The flags parameter controls
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* the style of the generated ACL.
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*/
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const wchar_t *
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archive_acl_text_w(struct archive *a, struct archive_acl *acl, int flags)
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{
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int count;
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size_t length;
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const wchar_t *wname;
|
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const wchar_t *prefix;
|
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wchar_t separator;
|
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struct archive_acl_entry *ap;
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int id, r;
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wchar_t *wp;
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if (acl->acl_text_w != NULL) {
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free (acl->acl_text_w);
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acl->acl_text_w = NULL;
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}
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separator = L',';
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count = 0;
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length = 0;
|
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ap = acl->acl_head;
|
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while (ap != NULL) {
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if ((ap->type & flags) != 0) {
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count++;
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if ((flags & ARCHIVE_ENTRY_ACL_STYLE_MARK_DEFAULT) &&
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(ap->type & ARCHIVE_ENTRY_ACL_TYPE_DEFAULT))
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length += 8; /* "default:" */
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length += 5; /* tag name */
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length += 1; /* colon */
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r = archive_mstring_get_wcs(a, &ap->name, &wname);
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if (r == 0 && wname != NULL)
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length += wcslen(wname);
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else if (r < 0 && errno == ENOMEM)
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return (NULL);
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else
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length += sizeof(uid_t) * 3 + 1;
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length ++; /* colon */
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length += 3; /* rwx */
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length += 1; /* colon */
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length += max(sizeof(uid_t), sizeof(gid_t)) * 3 + 1;
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length ++; /* newline */
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}
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ap = ap->next;
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}
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if (count > 0 && ((flags & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0)) {
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length += 10; /* "user::rwx\n" */
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length += 11; /* "group::rwx\n" */
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length += 11; /* "other::rwx\n" */
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}
|
|
|
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if (count == 0)
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return (NULL);
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|
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/* Now, allocate the string and actually populate it. */
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wp = acl->acl_text_w = (wchar_t *)malloc(length * sizeof(wchar_t));
|
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if (wp == NULL)
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return (NULL);
|
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count = 0;
|
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if ((flags & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0) {
|
|
append_entry_w(&wp, NULL, ARCHIVE_ENTRY_ACL_USER_OBJ, NULL,
|
|
acl->mode & 0700, -1);
|
|
*wp++ = ',';
|
|
append_entry_w(&wp, NULL, ARCHIVE_ENTRY_ACL_GROUP_OBJ, NULL,
|
|
acl->mode & 0070, -1);
|
|
*wp++ = ',';
|
|
append_entry_w(&wp, NULL, ARCHIVE_ENTRY_ACL_OTHER, NULL,
|
|
acl->mode & 0007, -1);
|
|
count += 3;
|
|
|
|
ap = acl->acl_head;
|
|
while (ap != NULL) {
|
|
if ((ap->type & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0) {
|
|
r = archive_mstring_get_wcs(a, &ap->name, &wname);
|
|
if (r == 0) {
|
|
*wp++ = separator;
|
|
if (flags & ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID)
|
|
id = ap->id;
|
|
else
|
|
id = -1;
|
|
append_entry_w(&wp, NULL, ap->tag, wname,
|
|
ap->permset, id);
|
|
count++;
|
|
} else if (r < 0 && errno == ENOMEM)
|
|
return (NULL);
|
|
}
|
|
ap = ap->next;
|
|
}
|
|
}
|
|
|
|
|
|
if ((flags & ARCHIVE_ENTRY_ACL_TYPE_DEFAULT) != 0) {
|
|
if (flags & ARCHIVE_ENTRY_ACL_STYLE_MARK_DEFAULT)
|
|
prefix = L"default:";
|
|
else
|
|
prefix = NULL;
|
|
ap = acl->acl_head;
|
|
count = 0;
|
|
while (ap != NULL) {
|
|
if ((ap->type & ARCHIVE_ENTRY_ACL_TYPE_DEFAULT) != 0) {
|
|
r = archive_mstring_get_wcs(a, &ap->name, &wname);
|
|
if (r == 0) {
|
|
if (count > 0)
|
|
*wp++ = separator;
|
|
if (flags & ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID)
|
|
id = ap->id;
|
|
else
|
|
id = -1;
|
|
append_entry_w(&wp, prefix, ap->tag,
|
|
wname, ap->permset, id);
|
|
count ++;
|
|
} else if (r < 0 && errno == ENOMEM)
|
|
return (NULL);
|
|
}
|
|
ap = ap->next;
|
|
}
|
|
}
|
|
|
|
return (acl->acl_text_w);
|
|
}
|
|
|
|
|
|
static void
|
|
append_id_w(wchar_t **wp, int id)
|
|
{
|
|
if (id < 0)
|
|
id = 0;
|
|
if (id > 9)
|
|
append_id_w(wp, id / 10);
|
|
*(*wp)++ = L"0123456789"[id % 10];
|
|
}
|
|
|
|
static void
|
|
append_entry_w(wchar_t **wp, const wchar_t *prefix, int tag,
|
|
const wchar_t *wname, int perm, int id)
|
|
{
|
|
if (prefix != NULL) {
|
|
wcscpy(*wp, prefix);
|
|
*wp += wcslen(*wp);
|
|
}
|
|
switch (tag) {
|
|
case ARCHIVE_ENTRY_ACL_USER_OBJ:
|
|
wname = NULL;
|
|
id = -1;
|
|
/* FALLTHROUGH */
|
|
case ARCHIVE_ENTRY_ACL_USER:
|
|
wcscpy(*wp, L"user");
|
|
break;
|
|
case ARCHIVE_ENTRY_ACL_GROUP_OBJ:
|
|
wname = NULL;
|
|
id = -1;
|
|
/* FALLTHROUGH */
|
|
case ARCHIVE_ENTRY_ACL_GROUP:
|
|
wcscpy(*wp, L"group");
|
|
break;
|
|
case ARCHIVE_ENTRY_ACL_MASK:
|
|
wcscpy(*wp, L"mask");
|
|
wname = NULL;
|
|
id = -1;
|
|
break;
|
|
case ARCHIVE_ENTRY_ACL_OTHER:
|
|
wcscpy(*wp, L"other");
|
|
wname = NULL;
|
|
id = -1;
|
|
break;
|
|
}
|
|
*wp += wcslen(*wp);
|
|
*(*wp)++ = L':';
|
|
if (wname != NULL) {
|
|
wcscpy(*wp, wname);
|
|
*wp += wcslen(*wp);
|
|
} else if (tag == ARCHIVE_ENTRY_ACL_USER
|
|
|| tag == ARCHIVE_ENTRY_ACL_GROUP) {
|
|
append_id_w(wp, id);
|
|
id = -1;
|
|
}
|
|
*(*wp)++ = L':';
|
|
*(*wp)++ = (perm & 0444) ? L'r' : L'-';
|
|
*(*wp)++ = (perm & 0222) ? L'w' : L'-';
|
|
*(*wp)++ = (perm & 0111) ? L'x' : L'-';
|
|
if (id != -1) {
|
|
*(*wp)++ = L':';
|
|
append_id_w(wp, id);
|
|
}
|
|
**wp = L'\0';
|
|
}
|
|
|
|
int
|
|
archive_acl_text_l(struct archive_acl *acl, int flags,
|
|
const char **acl_text, size_t *acl_text_len,
|
|
struct archive_string_conv *sc)
|
|
{
|
|
int count;
|
|
size_t length;
|
|
const char *name;
|
|
const char *prefix;
|
|
char separator;
|
|
struct archive_acl_entry *ap;
|
|
size_t len;
|
|
int id, r;
|
|
char *p;
|
|
|
|
if (acl->acl_text != NULL) {
|
|
free (acl->acl_text);
|
|
acl->acl_text = NULL;
|
|
}
|
|
|
|
*acl_text = NULL;
|
|
if (acl_text_len != NULL)
|
|
*acl_text_len = 0;
|
|
separator = ',';
|
|
count = 0;
|
|
length = 0;
|
|
ap = acl->acl_head;
|
|
while (ap != NULL) {
|
|
if ((ap->type & flags) != 0) {
|
|
count++;
|
|
if ((flags & ARCHIVE_ENTRY_ACL_STYLE_MARK_DEFAULT) &&
|
|
(ap->type & ARCHIVE_ENTRY_ACL_TYPE_DEFAULT))
|
|
length += 8; /* "default:" */
|
|
length += 5; /* tag name */
|
|
length += 1; /* colon */
|
|
r = archive_mstring_get_mbs_l(
|
|
&ap->name, &name, &len, sc);
|
|
if (r != 0)
|
|
return (-1);
|
|
if (len > 0 && name != NULL)
|
|
length += len;
|
|
else
|
|
length += sizeof(uid_t) * 3 + 1;
|
|
length ++; /* colon */
|
|
length += 3; /* rwx */
|
|
length += 1; /* colon */
|
|
length += max(sizeof(uid_t), sizeof(gid_t)) * 3 + 1;
|
|
length ++; /* newline */
|
|
}
|
|
ap = ap->next;
|
|
}
|
|
|
|
if (count > 0 && ((flags & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0)) {
|
|
length += 10; /* "user::rwx\n" */
|
|
length += 11; /* "group::rwx\n" */
|
|
length += 11; /* "other::rwx\n" */
|
|
}
|
|
|
|
if (count == 0)
|
|
return (0);
|
|
|
|
/* Now, allocate the string and actually populate it. */
|
|
p = acl->acl_text = (char *)malloc(length);
|
|
if (p == NULL)
|
|
return (-1);
|
|
count = 0;
|
|
if ((flags & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0) {
|
|
append_entry(&p, NULL, ARCHIVE_ENTRY_ACL_USER_OBJ, NULL,
|
|
acl->mode & 0700, -1);
|
|
*p++ = ',';
|
|
append_entry(&p, NULL, ARCHIVE_ENTRY_ACL_GROUP_OBJ, NULL,
|
|
acl->mode & 0070, -1);
|
|
*p++ = ',';
|
|
append_entry(&p, NULL, ARCHIVE_ENTRY_ACL_OTHER, NULL,
|
|
acl->mode & 0007, -1);
|
|
count += 3;
|
|
|
|
for (ap = acl->acl_head; ap != NULL; ap = ap->next) {
|
|
if ((ap->type & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) == 0)
|
|
continue;
|
|
r = archive_mstring_get_mbs_l(
|
|
&ap->name, &name, &len, sc);
|
|
if (r != 0)
|
|
return (-1);
|
|
*p++ = separator;
|
|
if (flags & ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID)
|
|
id = ap->id;
|
|
else
|
|
id = -1;
|
|
append_entry(&p, NULL, ap->tag, name,
|
|
ap->permset, id);
|
|
count++;
|
|
}
|
|
}
|
|
|
|
|
|
if ((flags & ARCHIVE_ENTRY_ACL_TYPE_DEFAULT) != 0) {
|
|
if (flags & ARCHIVE_ENTRY_ACL_STYLE_MARK_DEFAULT)
|
|
prefix = "default:";
|
|
else
|
|
prefix = NULL;
|
|
count = 0;
|
|
for (ap = acl->acl_head; ap != NULL; ap = ap->next) {
|
|
if ((ap->type & ARCHIVE_ENTRY_ACL_TYPE_DEFAULT) == 0)
|
|
continue;
|
|
r = archive_mstring_get_mbs_l(
|
|
&ap->name, &name, &len, sc);
|
|
if (r != 0)
|
|
return (-1);
|
|
if (count > 0)
|
|
*p++ = separator;
|
|
if (flags & ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID)
|
|
id = ap->id;
|
|
else
|
|
id = -1;
|
|
append_entry(&p, prefix, ap->tag,
|
|
name, ap->permset, id);
|
|
count ++;
|
|
}
|
|
}
|
|
|
|
*acl_text = acl->acl_text;
|
|
if (acl_text_len != NULL)
|
|
*acl_text_len = strlen(acl->acl_text);
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
append_id(char **p, int id)
|
|
{
|
|
if (id < 0)
|
|
id = 0;
|
|
if (id > 9)
|
|
append_id(p, id / 10);
|
|
*(*p)++ = "0123456789"[id % 10];
|
|
}
|
|
|
|
static void
|
|
append_entry(char **p, const char *prefix, int tag,
|
|
const char *name, int perm, int id)
|
|
{
|
|
if (prefix != NULL) {
|
|
strcpy(*p, prefix);
|
|
*p += strlen(*p);
|
|
}
|
|
switch (tag) {
|
|
case ARCHIVE_ENTRY_ACL_USER_OBJ:
|
|
name = NULL;
|
|
id = -1;
|
|
/* FALLTHROUGH */
|
|
case ARCHIVE_ENTRY_ACL_USER:
|
|
strcpy(*p, "user");
|
|
break;
|
|
case ARCHIVE_ENTRY_ACL_GROUP_OBJ:
|
|
name = NULL;
|
|
id = -1;
|
|
/* FALLTHROUGH */
|
|
case ARCHIVE_ENTRY_ACL_GROUP:
|
|
strcpy(*p, "group");
|
|
break;
|
|
case ARCHIVE_ENTRY_ACL_MASK:
|
|
strcpy(*p, "mask");
|
|
name = NULL;
|
|
id = -1;
|
|
break;
|
|
case ARCHIVE_ENTRY_ACL_OTHER:
|
|
strcpy(*p, "other");
|
|
name = NULL;
|
|
id = -1;
|
|
break;
|
|
}
|
|
*p += strlen(*p);
|
|
*(*p)++ = ':';
|
|
if (name != NULL) {
|
|
strcpy(*p, name);
|
|
*p += strlen(*p);
|
|
} else if (tag == ARCHIVE_ENTRY_ACL_USER
|
|
|| tag == ARCHIVE_ENTRY_ACL_GROUP) {
|
|
append_id(p, id);
|
|
id = -1;
|
|
}
|
|
*(*p)++ = ':';
|
|
*(*p)++ = (perm & 0444) ? 'r' : '-';
|
|
*(*p)++ = (perm & 0222) ? 'w' : '-';
|
|
*(*p)++ = (perm & 0111) ? 'x' : '-';
|
|
if (id != -1) {
|
|
*(*p)++ = ':';
|
|
append_id(p, id);
|
|
}
|
|
**p = '\0';
|
|
}
|
|
|
|
/*
|
|
* Parse a textual ACL. This automatically recognizes and supports
|
|
* extensions described above. The 'type' argument is used to
|
|
* indicate the type that should be used for any entries not
|
|
* explicitly marked as "default:".
|
|
*/
|
|
int
|
|
archive_acl_parse_w(struct archive_acl *acl,
|
|
const wchar_t *text, int default_type)
|
|
{
|
|
struct {
|
|
const wchar_t *start;
|
|
const wchar_t *end;
|
|
} field[4], name;
|
|
|
|
int fields, n;
|
|
int type, tag, permset, id;
|
|
wchar_t sep;
|
|
|
|
while (text != NULL && *text != L'\0') {
|
|
/*
|
|
* Parse the fields out of the next entry,
|
|
* advance 'text' to start of next entry.
|
|
*/
|
|
fields = 0;
|
|
do {
|
|
const wchar_t *start, *end;
|
|
next_field_w(&text, &start, &end, &sep);
|
|
if (fields < 4) {
|
|
field[fields].start = start;
|
|
field[fields].end = end;
|
|
}
|
|
++fields;
|
|
} while (sep == L':');
|
|
|
|
/* Set remaining fields to blank. */
|
|
for (n = fields; n < 4; ++n)
|
|
field[n].start = field[n].end = NULL;
|
|
|
|
/* Check for a numeric ID in field 1 or 3. */
|
|
id = -1;
|
|
isint_w(field[1].start, field[1].end, &id);
|
|
/* Field 3 is optional. */
|
|
if (id == -1 && fields > 3)
|
|
isint_w(field[3].start, field[3].end, &id);
|
|
|
|
/*
|
|
* Solaris extension: "defaultuser::rwx" is the
|
|
* default ACL corresponding to "user::rwx", etc.
|
|
*/
|
|
if (field[0].end - field[0].start > 7
|
|
&& wmemcmp(field[0].start, L"default", 7) == 0) {
|
|
type = ARCHIVE_ENTRY_ACL_TYPE_DEFAULT;
|
|
field[0].start += 7;
|
|
} else
|
|
type = default_type;
|
|
|
|
name.start = name.end = NULL;
|
|
if (prefix_w(field[0].start, field[0].end, L"user")) {
|
|
if (!ismode_w(field[2].start, field[2].end, &permset))
|
|
return (ARCHIVE_WARN);
|
|
if (id != -1 || field[1].start < field[1].end) {
|
|
tag = ARCHIVE_ENTRY_ACL_USER;
|
|
name = field[1];
|
|
} else
|
|
tag = ARCHIVE_ENTRY_ACL_USER_OBJ;
|
|
} else if (prefix_w(field[0].start, field[0].end, L"group")) {
|
|
if (!ismode_w(field[2].start, field[2].end, &permset))
|
|
return (ARCHIVE_WARN);
|
|
if (id != -1 || field[1].start < field[1].end) {
|
|
tag = ARCHIVE_ENTRY_ACL_GROUP;
|
|
name = field[1];
|
|
} else
|
|
tag = ARCHIVE_ENTRY_ACL_GROUP_OBJ;
|
|
} else if (prefix_w(field[0].start, field[0].end, L"other")) {
|
|
if (fields == 2
|
|
&& field[1].start < field[1].end
|
|
&& ismode_w(field[1].start, field[1].end, &permset)) {
|
|
/* This is Solaris-style "other:rwx" */
|
|
} else if (fields == 3
|
|
&& field[1].start == field[1].end
|
|
&& field[2].start < field[2].end
|
|
&& ismode_w(field[2].start, field[2].end, &permset)) {
|
|
/* This is FreeBSD-style "other::rwx" */
|
|
} else
|
|
return (ARCHIVE_WARN);
|
|
tag = ARCHIVE_ENTRY_ACL_OTHER;
|
|
} else if (prefix_w(field[0].start, field[0].end, L"mask")) {
|
|
if (fields == 2
|
|
&& field[1].start < field[1].end
|
|
&& ismode_w(field[1].start, field[1].end, &permset)) {
|
|
/* This is Solaris-style "mask:rwx" */
|
|
} else if (fields == 3
|
|
&& field[1].start == field[1].end
|
|
&& field[2].start < field[2].end
|
|
&& ismode_w(field[2].start, field[2].end, &permset)) {
|
|
/* This is FreeBSD-style "mask::rwx" */
|
|
} else
|
|
return (ARCHIVE_WARN);
|
|
tag = ARCHIVE_ENTRY_ACL_MASK;
|
|
} else
|
|
return (ARCHIVE_WARN);
|
|
|
|
/* Add entry to the internal list. */
|
|
archive_acl_add_entry_w_len(acl, type, permset,
|
|
tag, id, name.start, name.end - name.start);
|
|
}
|
|
return (ARCHIVE_OK);
|
|
}
|
|
|
|
/*
|
|
* Parse a string to a positive decimal integer. Returns true if
|
|
* the string is non-empty and consists only of decimal digits,
|
|
* false otherwise.
|
|
*/
|
|
static int
|
|
isint_w(const wchar_t *start, const wchar_t *end, int *result)
|
|
{
|
|
int n = 0;
|
|
if (start >= end)
|
|
return (0);
|
|
while (start < end) {
|
|
if (*start < '0' || *start > '9')
|
|
return (0);
|
|
if (n > (INT_MAX / 10) ||
|
|
(n == INT_MAX / 10 && (*start - '0') > INT_MAX % 10)) {
|
|
n = INT_MAX;
|
|
} else {
|
|
n *= 10;
|
|
n += *start - '0';
|
|
}
|
|
start++;
|
|
}
|
|
*result = n;
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Parse a string as a mode field. Returns true if
|
|
* the string is non-empty and consists only of mode characters,
|
|
* false otherwise.
|
|
*/
|
|
static int
|
|
ismode_w(const wchar_t *start, const wchar_t *end, int *permset)
|
|
{
|
|
const wchar_t *p;
|
|
|
|
if (start >= end)
|
|
return (0);
|
|
p = start;
|
|
*permset = 0;
|
|
while (p < end) {
|
|
switch (*p++) {
|
|
case 'r': case 'R':
|
|
*permset |= ARCHIVE_ENTRY_ACL_READ;
|
|
break;
|
|
case 'w': case 'W':
|
|
*permset |= ARCHIVE_ENTRY_ACL_WRITE;
|
|
break;
|
|
case 'x': case 'X':
|
|
*permset |= ARCHIVE_ENTRY_ACL_EXECUTE;
|
|
break;
|
|
case '-':
|
|
break;
|
|
default:
|
|
return (0);
|
|
}
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Match "[:whitespace:]*(.*)[:whitespace:]*[:,\n]". *wp is updated
|
|
* to point to just after the separator. *start points to the first
|
|
* character of the matched text and *end just after the last
|
|
* character of the matched identifier. In particular *end - *start
|
|
* is the length of the field body, not including leading or trailing
|
|
* whitespace.
|
|
*/
|
|
static void
|
|
next_field_w(const wchar_t **wp, const wchar_t **start,
|
|
const wchar_t **end, wchar_t *sep)
|
|
{
|
|
/* Skip leading whitespace to find start of field. */
|
|
while (**wp == L' ' || **wp == L'\t' || **wp == L'\n') {
|
|
(*wp)++;
|
|
}
|
|
*start = *wp;
|
|
|
|
/* Scan for the separator. */
|
|
while (**wp != L'\0' && **wp != L',' && **wp != L':' &&
|
|
**wp != L'\n') {
|
|
(*wp)++;
|
|
}
|
|
*sep = **wp;
|
|
|
|
/* Trim trailing whitespace to locate end of field. */
|
|
*end = *wp - 1;
|
|
while (**end == L' ' || **end == L'\t' || **end == L'\n') {
|
|
(*end)--;
|
|
}
|
|
(*end)++;
|
|
|
|
/* Adjust scanner location. */
|
|
if (**wp != L'\0')
|
|
(*wp)++;
|
|
}
|
|
|
|
/*
|
|
* Return true if the characters [start...end) are a prefix of 'test'.
|
|
* This makes it easy to handle the obvious abbreviations: 'u' for 'user', etc.
|
|
*/
|
|
static int
|
|
prefix_w(const wchar_t *start, const wchar_t *end, const wchar_t *test)
|
|
{
|
|
if (start == end)
|
|
return (0);
|
|
|
|
if (*start++ != *test++)
|
|
return (0);
|
|
|
|
while (start < end && *start++ == *test++)
|
|
;
|
|
|
|
if (start < end)
|
|
return (0);
|
|
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Parse a textual ACL. This automatically recognizes and supports
|
|
* extensions described above. The 'type' argument is used to
|
|
* indicate the type that should be used for any entries not
|
|
* explicitly marked as "default:".
|
|
*/
|
|
int
|
|
archive_acl_parse_l(struct archive_acl *acl,
|
|
const char *text, int default_type, struct archive_string_conv *sc)
|
|
{
|
|
struct {
|
|
const char *start;
|
|
const char *end;
|
|
} field[4], name;
|
|
|
|
int fields, n, r, ret = ARCHIVE_OK;
|
|
int type, tag, permset, id;
|
|
char sep;
|
|
|
|
while (text != NULL && *text != '\0') {
|
|
/*
|
|
* Parse the fields out of the next entry,
|
|
* advance 'text' to start of next entry.
|
|
*/
|
|
fields = 0;
|
|
do {
|
|
const char *start, *end;
|
|
next_field(&text, &start, &end, &sep);
|
|
if (fields < 4) {
|
|
field[fields].start = start;
|
|
field[fields].end = end;
|
|
}
|
|
++fields;
|
|
} while (sep == ':');
|
|
|
|
/* Set remaining fields to blank. */
|
|
for (n = fields; n < 4; ++n)
|
|
field[n].start = field[n].end = NULL;
|
|
|
|
/* Check for a numeric ID in field 1 or 3. */
|
|
id = -1;
|
|
isint(field[1].start, field[1].end, &id);
|
|
/* Field 3 is optional. */
|
|
if (id == -1 && fields > 3)
|
|
isint(field[3].start, field[3].end, &id);
|
|
|
|
/*
|
|
* Solaris extension: "defaultuser::rwx" is the
|
|
* default ACL corresponding to "user::rwx", etc.
|
|
*/
|
|
if (field[0].end - field[0].start > 7
|
|
&& memcmp(field[0].start, "default", 7) == 0) {
|
|
type = ARCHIVE_ENTRY_ACL_TYPE_DEFAULT;
|
|
field[0].start += 7;
|
|
} else
|
|
type = default_type;
|
|
|
|
name.start = name.end = NULL;
|
|
if (prefix_c(field[0].start, field[0].end, "user")) {
|
|
if (!ismode(field[2].start, field[2].end, &permset))
|
|
return (ARCHIVE_WARN);
|
|
if (id != -1 || field[1].start < field[1].end) {
|
|
tag = ARCHIVE_ENTRY_ACL_USER;
|
|
name = field[1];
|
|
} else
|
|
tag = ARCHIVE_ENTRY_ACL_USER_OBJ;
|
|
} else if (prefix_c(field[0].start, field[0].end, "group")) {
|
|
if (!ismode(field[2].start, field[2].end, &permset))
|
|
return (ARCHIVE_WARN);
|
|
if (id != -1 || field[1].start < field[1].end) {
|
|
tag = ARCHIVE_ENTRY_ACL_GROUP;
|
|
name = field[1];
|
|
} else
|
|
tag = ARCHIVE_ENTRY_ACL_GROUP_OBJ;
|
|
} else if (prefix_c(field[0].start, field[0].end, "other")) {
|
|
if (fields == 2
|
|
&& field[1].start < field[1].end
|
|
&& ismode(field[1].start, field[1].end, &permset)) {
|
|
/* This is Solaris-style "other:rwx" */
|
|
} else if (fields == 3
|
|
&& field[1].start == field[1].end
|
|
&& field[2].start < field[2].end
|
|
&& ismode(field[2].start, field[2].end, &permset)) {
|
|
/* This is FreeBSD-style "other::rwx" */
|
|
} else
|
|
return (ARCHIVE_WARN);
|
|
tag = ARCHIVE_ENTRY_ACL_OTHER;
|
|
} else if (prefix_c(field[0].start, field[0].end, "mask")) {
|
|
if (fields == 2
|
|
&& field[1].start < field[1].end
|
|
&& ismode(field[1].start, field[1].end, &permset)) {
|
|
/* This is Solaris-style "mask:rwx" */
|
|
} else if (fields == 3
|
|
&& field[1].start == field[1].end
|
|
&& field[2].start < field[2].end
|
|
&& ismode(field[2].start, field[2].end, &permset)) {
|
|
/* This is FreeBSD-style "mask::rwx" */
|
|
} else
|
|
return (ARCHIVE_WARN);
|
|
tag = ARCHIVE_ENTRY_ACL_MASK;
|
|
} else
|
|
return (ARCHIVE_WARN);
|
|
|
|
/* Add entry to the internal list. */
|
|
r = archive_acl_add_entry_len_l(acl, type, permset,
|
|
tag, id, name.start, name.end - name.start, sc);
|
|
if (r < ARCHIVE_WARN)
|
|
return (r);
|
|
if (r != ARCHIVE_OK)
|
|
ret = ARCHIVE_WARN;
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Parse a string to a positive decimal integer. Returns true if
|
|
* the string is non-empty and consists only of decimal digits,
|
|
* false otherwise.
|
|
*/
|
|
static int
|
|
isint(const char *start, const char *end, int *result)
|
|
{
|
|
int n = 0;
|
|
if (start >= end)
|
|
return (0);
|
|
while (start < end) {
|
|
if (*start < '0' || *start > '9')
|
|
return (0);
|
|
if (n > (INT_MAX / 10) ||
|
|
(n == INT_MAX / 10 && (*start - '0') > INT_MAX % 10)) {
|
|
n = INT_MAX;
|
|
} else {
|
|
n *= 10;
|
|
n += *start - '0';
|
|
}
|
|
start++;
|
|
}
|
|
*result = n;
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Parse a string as a mode field. Returns true if
|
|
* the string is non-empty and consists only of mode characters,
|
|
* false otherwise.
|
|
*/
|
|
static int
|
|
ismode(const char *start, const char *end, int *permset)
|
|
{
|
|
const char *p;
|
|
|
|
if (start >= end)
|
|
return (0);
|
|
p = start;
|
|
*permset = 0;
|
|
while (p < end) {
|
|
switch (*p++) {
|
|
case 'r': case 'R':
|
|
*permset |= ARCHIVE_ENTRY_ACL_READ;
|
|
break;
|
|
case 'w': case 'W':
|
|
*permset |= ARCHIVE_ENTRY_ACL_WRITE;
|
|
break;
|
|
case 'x': case 'X':
|
|
*permset |= ARCHIVE_ENTRY_ACL_EXECUTE;
|
|
break;
|
|
case '-':
|
|
break;
|
|
default:
|
|
return (0);
|
|
}
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Match "[:whitespace:]*(.*)[:whitespace:]*[:,\n]". *wp is updated
|
|
* to point to just after the separator. *start points to the first
|
|
* character of the matched text and *end just after the last
|
|
* character of the matched identifier. In particular *end - *start
|
|
* is the length of the field body, not including leading or trailing
|
|
* whitespace.
|
|
*/
|
|
static void
|
|
next_field(const char **p, const char **start,
|
|
const char **end, char *sep)
|
|
{
|
|
/* Skip leading whitespace to find start of field. */
|
|
while (**p == ' ' || **p == '\t' || **p == '\n') {
|
|
(*p)++;
|
|
}
|
|
*start = *p;
|
|
|
|
/* Scan for the separator. */
|
|
while (**p != '\0' && **p != ',' && **p != ':' && **p != '\n') {
|
|
(*p)++;
|
|
}
|
|
*sep = **p;
|
|
|
|
/* Trim trailing whitespace to locate end of field. */
|
|
*end = *p - 1;
|
|
while (**end == ' ' || **end == '\t' || **end == '\n') {
|
|
(*end)--;
|
|
}
|
|
(*end)++;
|
|
|
|
/* Adjust scanner location. */
|
|
if (**p != '\0')
|
|
(*p)++;
|
|
}
|
|
|
|
/*
|
|
* Return true if the characters [start...end) are a prefix of 'test'.
|
|
* This makes it easy to handle the obvious abbreviations: 'u' for 'user', etc.
|
|
*/
|
|
static int
|
|
prefix_c(const char *start, const char *end, const char *test)
|
|
{
|
|
if (start == end)
|
|
return (0);
|
|
|
|
if (*start++ != *test++)
|
|
return (0);
|
|
|
|
while (start < end && *start++ == *test++)
|
|
;
|
|
|
|
if (start < end)
|
|
return (0);
|
|
|
|
return (1);
|
|
}
|