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/*
* SPDX-License-Identifier: ISC
*
* Copyright (c) 2009-2021 Todd C. Miller <Todd.Miller@sudo.ws>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* This is an open source non-commercial project. Dear PVS-Studio, please check it.
* PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
*/
#include <config.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_STDBOOL_H
# include <stdbool.h>
#else
# include "compat/stdbool.h"
#endif
#include "pathnames.h"
#include "sudo_compat.h"
#include "sudo_debug.h"
#include "sudo_util.h"
#include "sudo_iolog.h"
static unsigned int sessid_max = SESSID_MAX;
static mode_t iolog_filemode = S_IRUSR|S_IWUSR;
static mode_t iolog_dirmode = S_IRWXU;
static uid_t iolog_uid = ROOT_UID;
static gid_t iolog_gid = ROOT_GID;
static bool iolog_gid_set;
static bool iolog_docompress;
static bool iolog_doflush;
/*
* Reset I/O log settings to default values.
*/
void
iolog_set_defaults(void)
{
sessid_max = SESSID_MAX;
iolog_filemode = S_IRUSR|S_IWUSR;
iolog_dirmode = S_IRWXU;
iolog_uid = ROOT_UID;
iolog_gid = ROOT_GID;
iolog_gid_set = false;
iolog_docompress = false;
iolog_doflush = false;
}
/*
* Set max sequence number (aka session ID)
*/
void
iolog_set_maxseq(unsigned int newval)
{
debug_decl(iolog_set_maxseq, SUDO_DEBUG_UTIL);
/* Clamp to SESSID_MAX as documented. */
if (newval > SESSID_MAX)
newval = SESSID_MAX;
sessid_max = newval;
debug_return;
}
/*
* Set iolog_uid (and iolog_gid if gid not explicitly set).
*/
void
iolog_set_owner(uid_t uid, gid_t gid)
{
debug_decl(iolog_set_owner, SUDO_DEBUG_UTIL);
iolog_uid = uid;
if (!iolog_gid_set)
iolog_gid = gid;
debug_return;
}
/*
* Set iolog_gid.
*/
void
iolog_set_gid(gid_t gid)
{
debug_decl(iolog_set_gid, SUDO_DEBUG_UTIL);
iolog_gid = gid;
iolog_gid_set = true;
debug_return;
}
/*
* Set iolog_filemode and iolog_dirmode.
*/
void
iolog_set_mode(mode_t mode)
{
debug_decl(iolog_set_mode, SUDO_DEBUG_UTIL);
/* I/O log files must be readable and writable by owner. */
iolog_filemode = S_IRUSR|S_IWUSR;
/* Add in group and other read/write if specified. */
iolog_filemode |= mode & (S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH);
/* For directory mode, add execute bits as needed. */
iolog_dirmode = iolog_filemode | S_IXUSR;
if (iolog_dirmode & (S_IRGRP|S_IWGRP))
iolog_dirmode |= S_IXGRP;
if (iolog_dirmode & (S_IROTH|S_IWOTH))
iolog_dirmode |= S_IXOTH;
debug_return;
}
/*
* Set iolog_docompress
*/
void
iolog_set_compress(bool newval)
{
debug_decl(iolog_set_compress, SUDO_DEBUG_UTIL);
iolog_docompress = newval;
debug_return;
}
/*
* Set iolog_doflush
*/
void
iolog_set_flush(bool newval)
{
debug_decl(iolog_set_flush, SUDO_DEBUG_UTIL);
iolog_doflush = newval;
debug_return;
}
/*
* Getters.
*/
unsigned int
iolog_get_maxseq(void)
{
return sessid_max;
}
uid_t
iolog_get_uid(void)
{
return iolog_uid;
}
gid_t
iolog_get_gid(void)
{
return iolog_gid;
}
mode_t
iolog_get_file_mode(void)
{
return iolog_filemode;
}
mode_t
iolog_get_dir_mode(void)
{
return iolog_dirmode;
}
bool
iolog_get_compress(void)
{
return iolog_docompress;
}
bool
iolog_get_flush(void)
{
return iolog_doflush;
}
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