/*

 * SPDX-License-Identifier: ISC

 *

 * Copyright (c) 1994-1996, 1998-2020 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.

 *

 * Sponsored in part by the Defense Advanced Research Projects

 * Agency (DARPA) and Air Force Research Laboratory, Air Force

 * Materiel Command, USAF, under agreement number F39502-99-1-0512.

 */

/*

 * 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/socket.h>

#include <sys/stat.h>

#include <sys/wait.h>

#include <netinet/in.h>

#include <ctype.h>

#include <errno.h>

#include <fcntl.h>

#include <grp.h>

#include <locale.h>

#include <pwd.h>

#include <signal.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <syslog.h>

#include <time.h>

#include <unistd.h>

#include "pathnames.h"

#include "sudo_compat.h"

#include "sudo_debug.h"

#include "sudo_eventlog.h"

#include "sudo_fatal.h"

#include "sudo_gettext.h"

#include "sudo_json.h"

#include "sudo_queue.h"

#include "sudo_util.h"

static FILE *eventlog_stub_open_log(int type, const char *logfile);

static void eventlog_stub_close_log(int type, FILE *fp);

/* Eventlog config settings (default values). */

static struct eventlog_config evl_conf = {

    EVLOG_NONE,     /* type */

    EVLOG_SUDO,     /* format */

    LOG_NOTICE,     /* syslog_acceptpri */

    LOG_ALERT,      /* syslog_rejectpri */

    LOG_ALERT,      /* syslog_alertpri */

    MAXSYSLOGLEN,   /* syslog_maxlen */

    0,        /* file_maxlen */

    ROOT_UID,     /* mailuid */

    false,      /* omit_hostname */

    _PATH_SUDO_LOGFILE,   /* logpath */

    "%h %e %T",     /* time_fmt */

#ifdef _PATH_SUDO_SENDMAIL

    _PATH_SUDO_SENDMAIL,  /* mailerpath */

#else

    NULL,     /* mailerpath (disabled) */

#endif

    "-t",     /* mailerflags */

    NULL,     /* mailfrom */

    MAILTO,     /* mailto */

    N_(MAILSUBJECT),    /* mailsub */

    eventlog_stub_open_log, /* open_log */

    eventlog_stub_close_log /* close_log */

};

static FILE *

eventlog_stub_open_log(int type, const char *logfile)

{

    debug_decl(eventlog_stub_open_log, SUDO_DEBUG_UTIL);

    sudo_debug_printf(SUDO_DEBUG_WARN|SUDO_DEBUG_LINENO,

  "open_log not set, using stub");

    debug_return_ptr(NULL);

}

static void

eventlog_stub_close_log(int type, FILE *fp)

{

    debug_decl(eventlog_stub_close_log, SUDO_DEBUG_UTIL);

    sudo_debug_printf(SUDO_DEBUG_WARN|SUDO_DEBUG_LINENO,

  "close_log not set, using stub");

    debug_return;

}

/*

 * eventlog config setters.

 */

void

eventlog_set_type(int type)

{

    evl_conf.type = type;

}

void

eventlog_set_format(enum eventlog_format format)

{

    evl_conf.format = format;

}

void

eventlog_set_syslog_acceptpri(int pri)

{

    evl_conf.syslog_acceptpri = pri;

}

void

eventlog_set_syslog_rejectpri(int pri)

{

    evl_conf.syslog_rejectpri = pri;

}

void

eventlog_set_syslog_alertpri(int pri)

{

    evl_conf.syslog_alertpri = pri;

}

void

eventlog_set_syslog_maxlen(int len)

{

    evl_conf.syslog_maxlen = len;

}

void

eventlog_set_file_maxlen(int len)

{

    evl_conf.file_maxlen = len;

}

void

eventlog_set_mailuid(uid_t uid)

{

    evl_conf.mailuid = uid;

}

void

eventlog_set_omit_hostname(bool omit_hostname)

{

    evl_conf.omit_hostname = omit_hostname;

}

void

eventlog_set_logpath(const char *path)

{

    evl_conf.logpath = path;

}

void

eventlog_set_time_fmt(const char *fmt)

{

    evl_conf.time_fmt = fmt;

}

void

eventlog_set_mailerpath(const char *path)

{

    evl_conf.mailerpath = path;

}

void

eventlog_set_mailerflags(const char *mflags)

{

    evl_conf.mailerflags = mflags;

}

void

eventlog_set_mailfrom(const char *from_addr)

{

    evl_conf.mailfrom = from_addr;

}

void

eventlog_set_mailto(const char *to_addr)

{

    evl_conf.mailto = to_addr;

}

void

eventlog_set_mailsub(const char *subject)

{

    evl_conf.mailsub = subject;

}

void

eventlog_set_open_log(FILE *(*fn)(int type, const char *))

{

    evl_conf.open_log = fn;

}

void

eventlog_set_close_log(void (*fn)(int type, FILE *))

{

    evl_conf.close_log = fn;

}

/*

 * get eventlog config.

 */

const struct eventlog_config *

eventlog_getconf(void)

{

    return &evl_conf;

}