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/*
* SPDX-License-Identifier: ISC
*
* Copyright (c) 2013-2015, 2020-2021 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 <stdlib.h>
#include <string.h>
#include "sudo_compat.h"
#include "sudo_util.h"
/*
* Declare/define __progname[] if necessary.
* Assumes __progname[] is present if we have getprogname(3).
*/
#ifndef HAVE_SETPROGNAME
# if defined(HAVE_GETPROGNAME) || defined(HAVE___PROGNAME)
extern const char *__progname;
# else
static const char *__progname = "";
# endif /* HAVE_GETPROGNAME || HAVE___PROGNAME */
#endif /* HAVE_SETPROGNAME */
#ifndef HAVE_GETPROGNAME
const char *
sudo_getprogname(void)
{
return __progname;
}
#endif
#ifndef HAVE_SETPROGNAME
void
sudo_setprogname(const char *name)
{
__progname = sudo_basename(name);
}
#endif
void
initprogname2(const char *name, const char * const * allowed)
{
const char *progname;
int i;
/* Fall back on "name" if getprogname() returns an empty string. */
if ((progname = getprogname()) != NULL && *progname != '\0') {
name = progname;
} else {
/* Make sure user-specified name is relative. */
name = sudo_basename(name);
}
/* Check for libtool prefix and strip it if present. */
if (name[0] == 'l' && name[1] == 't' && name[2] == '-' && name[3] != '\0')
name += 3;
/* Check allow list if present (first element is the default). */
if (allowed != NULL) {
for (i = 0; ; i++) {
if (allowed[i] == NULL) {
name = allowed[0];
break;
}
if (strcmp(allowed[i], name) == 0)
break;
}
}
/* Update internal progname if needed. */
if (name != progname)
setprogname(name);
return;
}
void
initprogname(const char *name)
{
initprogname2(name, NULL);
}
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