d915a14ef0
Mainly focus on files that use BSD 2-Clause license, however the tool I was using mis-identified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
264 lines
6.7 KiB
C
264 lines
6.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 1999-2002 Robert N. M. Watson
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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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* acl_to_text - return a text string with a text representation of the acl
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* in it.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include "namespace.h"
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#include <sys/acl.h>
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#include "un-namespace.h"
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#include <sys/errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "acl_support.h"
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/*
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* acl_to_text - generate a text form of an acl
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* spec says nothing about output ordering, so leave in acl order
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*
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* This function will not produce nice results if it is called with
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* a non-POSIX.1e semantics ACL.
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*/
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char *_nfs4_acl_to_text_np(const acl_t acl, ssize_t *len_p, int flags);
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static char *
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_posix1e_acl_to_text(acl_t acl, ssize_t *len_p, int flags)
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{
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struct acl *acl_int;
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char *buf, *tmpbuf;
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char name_buf[MAXLOGNAME];
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char perm_buf[_POSIX1E_ACL_STRING_PERM_MAXSIZE+1],
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effective_perm_buf[_POSIX1E_ACL_STRING_PERM_MAXSIZE+1];
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int i, error, len;
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uid_t ae_id;
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acl_tag_t ae_tag;
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acl_perm_t ae_perm, effective_perm, mask_perm;
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buf = strdup("");
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if (buf == NULL)
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return(NULL);
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acl_int = &acl->ats_acl;
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mask_perm = ACL_PERM_BITS; /* effective is regular if no mask */
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for (i = 0; i < acl_int->acl_cnt; i++)
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if (acl_int->acl_entry[i].ae_tag == ACL_MASK)
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mask_perm = acl_int->acl_entry[i].ae_perm;
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for (i = 0; i < acl_int->acl_cnt; i++) {
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ae_tag = acl_int->acl_entry[i].ae_tag;
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ae_id = acl_int->acl_entry[i].ae_id;
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ae_perm = acl_int->acl_entry[i].ae_perm;
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switch(ae_tag) {
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case ACL_USER_OBJ:
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error = _posix1e_acl_perm_to_string(ae_perm,
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_POSIX1E_ACL_STRING_PERM_MAXSIZE+1, perm_buf);
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if (error)
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goto error_label;
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len = asprintf(&tmpbuf, "%suser::%s\n", buf,
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perm_buf);
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if (len == -1)
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goto error_label;
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free(buf);
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buf = tmpbuf;
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break;
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case ACL_USER:
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error = _posix1e_acl_perm_to_string(ae_perm,
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_POSIX1E_ACL_STRING_PERM_MAXSIZE+1, perm_buf);
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if (error)
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goto error_label;
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error = _posix1e_acl_id_to_name(ae_tag, ae_id,
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MAXLOGNAME, name_buf, flags);
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if (error)
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goto error_label;
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effective_perm = ae_perm & mask_perm;
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if (effective_perm != ae_perm) {
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error = _posix1e_acl_perm_to_string(
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effective_perm,
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_POSIX1E_ACL_STRING_PERM_MAXSIZE+1,
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effective_perm_buf);
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if (error)
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goto error_label;
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len = asprintf(&tmpbuf, "%suser:%s:%s\t\t# "
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"effective: %s\n",
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buf, name_buf, perm_buf,
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effective_perm_buf);
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} else {
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len = asprintf(&tmpbuf, "%suser:%s:%s\n", buf,
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name_buf, perm_buf);
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}
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if (len == -1)
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goto error_label;
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free(buf);
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buf = tmpbuf;
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break;
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case ACL_GROUP_OBJ:
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error = _posix1e_acl_perm_to_string(ae_perm,
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_POSIX1E_ACL_STRING_PERM_MAXSIZE+1, perm_buf);
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if (error)
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goto error_label;
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effective_perm = ae_perm & mask_perm;
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if (effective_perm != ae_perm) {
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error = _posix1e_acl_perm_to_string(
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effective_perm,
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_POSIX1E_ACL_STRING_PERM_MAXSIZE+1,
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effective_perm_buf);
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if (error)
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goto error_label;
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len = asprintf(&tmpbuf, "%sgroup::%s\t\t# "
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"effective: %s\n",
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buf, perm_buf, effective_perm_buf);
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} else {
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len = asprintf(&tmpbuf, "%sgroup::%s\n", buf,
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perm_buf);
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}
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if (len == -1)
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goto error_label;
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free(buf);
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buf = tmpbuf;
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break;
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case ACL_GROUP:
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error = _posix1e_acl_perm_to_string(ae_perm,
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_POSIX1E_ACL_STRING_PERM_MAXSIZE+1, perm_buf);
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if (error)
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goto error_label;
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error = _posix1e_acl_id_to_name(ae_tag, ae_id,
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MAXLOGNAME, name_buf, flags);
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if (error)
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goto error_label;
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effective_perm = ae_perm & mask_perm;
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if (effective_perm != ae_perm) {
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error = _posix1e_acl_perm_to_string(
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effective_perm,
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_POSIX1E_ACL_STRING_PERM_MAXSIZE+1,
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effective_perm_buf);
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if (error)
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goto error_label;
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len = asprintf(&tmpbuf, "%sgroup:%s:%s\t\t# "
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"effective: %s\n",
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buf, name_buf, perm_buf,
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effective_perm_buf);
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} else {
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len = asprintf(&tmpbuf, "%sgroup:%s:%s\n", buf,
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name_buf, perm_buf);
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}
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if (len == -1)
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goto error_label;
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free(buf);
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buf = tmpbuf;
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break;
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case ACL_MASK:
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error = _posix1e_acl_perm_to_string(ae_perm,
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_POSIX1E_ACL_STRING_PERM_MAXSIZE+1, perm_buf);
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if (error)
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goto error_label;
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len = asprintf(&tmpbuf, "%smask::%s\n", buf,
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perm_buf);
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if (len == -1)
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goto error_label;
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free(buf);
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buf = tmpbuf;
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break;
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case ACL_OTHER:
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error = _posix1e_acl_perm_to_string(ae_perm,
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_POSIX1E_ACL_STRING_PERM_MAXSIZE+1, perm_buf);
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if (error)
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goto error_label;
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len = asprintf(&tmpbuf, "%sother::%s\n", buf,
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perm_buf);
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if (len == -1)
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goto error_label;
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free(buf);
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buf = tmpbuf;
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break;
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default:
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errno = EINVAL;
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goto error_label;
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}
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}
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if (len_p) {
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*len_p = strlen(buf);
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}
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return (buf);
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error_label:
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/* jump to here sets errno already, we just clean up */
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if (buf) free(buf);
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return (NULL);
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}
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char *
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acl_to_text_np(acl_t acl, ssize_t *len_p, int flags)
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{
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if (acl == NULL) {
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errno = EINVAL;
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return(NULL);
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}
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switch (_acl_brand(acl)) {
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case ACL_BRAND_POSIX:
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return (_posix1e_acl_to_text(acl, len_p, flags));
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case ACL_BRAND_NFS4:
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return (_nfs4_acl_to_text_np(acl, len_p, flags));
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default:
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errno = EINVAL;
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return (NULL);
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}
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}
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char *
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acl_to_text(acl_t acl, ssize_t *len_p)
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{
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return (acl_to_text_np(acl, len_p, 0));
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}
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