dc29acd1a9
The maximum length of a username has nothing to do with the size of the username in the utmp files. Use MAXLOGNAME, which is defined as 17 (UT_USERSIZE + 1).
262 lines
6.7 KiB
C
262 lines
6.7 KiB
C
/*-
|
|
* 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));
|
|
}
|