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-rw-r--r--lib/libc/posix1e/acl_to_text.c261
1 files changed, 261 insertions, 0 deletions
diff --git a/lib/libc/posix1e/acl_to_text.c b/lib/libc/posix1e/acl_to_text.c
new file mode 100644
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+++ b/lib/libc/posix1e/acl_to_text.c
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+/*-
+ * Copyright (c) 1999-2002 Robert N. M. Watson
+ * 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
+ */
+/*
+ * acl_to_text - return a text string with a text representation of the acl
+ * in it.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include "namespace.h"
+#include <sys/acl.h>
+#include "un-namespace.h"
+#include <sys/errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "acl_support.h"
+
+/*
+ * acl_to_text - generate a text form of an acl
+ * spec says nothing about output ordering, so leave in acl order
+ *
+ * This function will not produce nice results if it is called with
+ * a non-POSIX.1e semantics ACL.
+ */
+
+char *_nfs4_acl_to_text_np(const acl_t acl, ssize_t *len_p, int flags);
+
+static char *
+_posix1e_acl_to_text(acl_t acl, ssize_t *len_p, int flags)
+{
+ struct acl *acl_int;
+ char *buf, *tmpbuf;
+ char name_buf[MAXLOGNAME];
+ char perm_buf[_POSIX1E_ACL_STRING_PERM_MAXSIZE+1],
+ effective_perm_buf[_POSIX1E_ACL_STRING_PERM_MAXSIZE+1];
+ int i, error, len;
+ uid_t ae_id;
+ acl_tag_t ae_tag;
+ acl_perm_t ae_perm, effective_perm, mask_perm;
+
+ buf = strdup("");
+ if (buf == NULL)
+ return(NULL);
+
+ acl_int = &acl->ats_acl;
+
+ mask_perm = ACL_PERM_BITS; /* effective is regular if no mask */
+ for (i = 0; i < acl_int->acl_cnt; i++)
+ if (acl_int->acl_entry[i].ae_tag == ACL_MASK)
+ mask_perm = acl_int->acl_entry[i].ae_perm;
+
+ for (i = 0; i < acl_int->acl_cnt; i++) {
+ ae_tag = acl_int->acl_entry[i].ae_tag;
+ ae_id = acl_int->acl_entry[i].ae_id;
+ ae_perm = acl_int->acl_entry[i].ae_perm;
+
+ switch(ae_tag) {
+ case ACL_USER_OBJ:
+ error = _posix1e_acl_perm_to_string(ae_perm,
+ _POSIX1E_ACL_STRING_PERM_MAXSIZE+1, perm_buf);
+ if (error)
+ goto error_label;
+ len = asprintf(&tmpbuf, "%suser::%s\n", buf,
+ perm_buf);
+ if (len == -1)
+ goto error_label;
+ free(buf);
+ buf = tmpbuf;
+ break;
+
+ case ACL_USER:
+ error = _posix1e_acl_perm_to_string(ae_perm,
+ _POSIX1E_ACL_STRING_PERM_MAXSIZE+1, perm_buf);
+ if (error)
+ goto error_label;
+
+ error = _posix1e_acl_id_to_name(ae_tag, ae_id,
+ MAXLOGNAME, name_buf, flags);
+ if (error)
+ goto error_label;
+
+ effective_perm = ae_perm & mask_perm;
+ if (effective_perm != ae_perm) {
+ error = _posix1e_acl_perm_to_string(
+ effective_perm,
+ _POSIX1E_ACL_STRING_PERM_MAXSIZE+1,
+ effective_perm_buf);
+ if (error)
+ goto error_label;
+ len = asprintf(&tmpbuf, "%suser:%s:%s\t\t# "
+ "effective: %s\n",
+ buf, name_buf, perm_buf,
+ effective_perm_buf);
+ } else {
+ len = asprintf(&tmpbuf, "%suser:%s:%s\n", buf,
+ name_buf, perm_buf);
+ }
+ if (len == -1)
+ goto error_label;
+ free(buf);
+ buf = tmpbuf;
+ break;
+
+ case ACL_GROUP_OBJ:
+ error = _posix1e_acl_perm_to_string(ae_perm,
+ _POSIX1E_ACL_STRING_PERM_MAXSIZE+1, perm_buf);
+ if (error)
+ goto error_label;
+
+ effective_perm = ae_perm & mask_perm;
+ if (effective_perm != ae_perm) {
+ error = _posix1e_acl_perm_to_string(
+ effective_perm,
+ _POSIX1E_ACL_STRING_PERM_MAXSIZE+1,
+ effective_perm_buf);
+ if (error)
+ goto error_label;
+ len = asprintf(&tmpbuf, "%sgroup::%s\t\t# "
+ "effective: %s\n",
+ buf, perm_buf, effective_perm_buf);
+ } else {
+ len = asprintf(&tmpbuf, "%sgroup::%s\n", buf,
+ perm_buf);
+ }
+ if (len == -1)
+ goto error_label;
+ free(buf);
+ buf = tmpbuf;
+ break;
+
+ case ACL_GROUP:
+ error = _posix1e_acl_perm_to_string(ae_perm,
+ _POSIX1E_ACL_STRING_PERM_MAXSIZE+1, perm_buf);
+ if (error)
+ goto error_label;
+
+ error = _posix1e_acl_id_to_name(ae_tag, ae_id,
+ MAXLOGNAME, name_buf, flags);
+ if (error)
+ goto error_label;
+
+ effective_perm = ae_perm & mask_perm;
+ if (effective_perm != ae_perm) {
+ error = _posix1e_acl_perm_to_string(
+ effective_perm,
+ _POSIX1E_ACL_STRING_PERM_MAXSIZE+1,
+ effective_perm_buf);
+ if (error)
+ goto error_label;
+ len = asprintf(&tmpbuf, "%sgroup:%s:%s\t\t# "
+ "effective: %s\n",
+ buf, name_buf, perm_buf,
+ effective_perm_buf);
+ } else {
+ len = asprintf(&tmpbuf, "%sgroup:%s:%s\n", buf,
+ name_buf, perm_buf);
+ }
+ if (len == -1)
+ goto error_label;
+ free(buf);
+ buf = tmpbuf;
+ break;
+
+ case ACL_MASK:
+ error = _posix1e_acl_perm_to_string(ae_perm,
+ _POSIX1E_ACL_STRING_PERM_MAXSIZE+1, perm_buf);
+ if (error)
+ goto error_label;
+
+ len = asprintf(&tmpbuf, "%smask::%s\n", buf,
+ perm_buf);
+ if (len == -1)
+ goto error_label;
+ free(buf);
+ buf = tmpbuf;
+ break;
+
+ case ACL_OTHER:
+ error = _posix1e_acl_perm_to_string(ae_perm,
+ _POSIX1E_ACL_STRING_PERM_MAXSIZE+1, perm_buf);
+ if (error)
+ goto error_label;
+
+ len = asprintf(&tmpbuf, "%sother::%s\n", buf,
+ perm_buf);
+ if (len == -1)
+ goto error_label;
+ free(buf);
+ buf = tmpbuf;
+ break;
+
+ default:
+ errno = EINVAL;
+ goto error_label;
+ }
+ }
+
+ if (len_p) {
+ *len_p = strlen(buf);
+ }
+ return (buf);
+
+error_label:
+ /* jump to here sets errno already, we just clean up */
+ if (buf) free(buf);
+ return (NULL);
+}
+
+char *
+acl_to_text_np(acl_t acl, ssize_t *len_p, int flags)
+{
+
+ if (acl == NULL) {
+ errno = EINVAL;
+ return(NULL);
+ }
+
+ switch (_acl_brand(acl)) {
+ case ACL_BRAND_POSIX:
+ return (_posix1e_acl_to_text(acl, len_p, flags));
+ case ACL_BRAND_NFS4:
+ return (_nfs4_acl_to_text_np(acl, len_p, flags));
+ default:
+ errno = EINVAL;
+ return (NULL);
+ }
+}
+
+char *
+acl_to_text(acl_t acl, ssize_t *len_p)
+{
+
+ return (acl_to_text_np(acl, len_p, 0));
+}
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