136 lines
3.2 KiB
C
136 lines
3.2 KiB
C
/*
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* SPDX-License-Identifier: ISC
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*
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* Copyright (c) 2013-2015 Todd C. Miller <Todd.Miller@sudo.ws>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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* This is an open source non-commercial project. Dear PVS-Studio, please check it.
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* PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
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*/
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#include <config.h>
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#include <stdlib.h>
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#include <string.h>
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#include "sudo_compat.h"
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#include "sudo_util.h"
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#ifdef HAVE_GETPROGNAME
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# ifndef HAVE_SETPROGNAME
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/* Assume __progname if have getprogname(3) but not setprogname(3). */
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extern const char *__progname;
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void
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sudo_setprogname(const char *name)
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{
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const char *base = strrchr(name, '/');
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__progname = base ? base : name;
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}
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# endif
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void
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initprogname2(const char *name, const char * const * allowed)
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{
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const char *progname;
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int i;
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/* Fall back on "name" if getprogname() returns an empty string. */
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if ((progname = getprogname()) != NULL && *progname != '\0')
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name = progname;
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/* Check for libtool prefix and strip it if present. */
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if (name[0] == 'l' && name[1] == 't' && name[2] == '-' && name[3] != '\0')
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name += 3;
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/* Check allow list if present (first element is the default). */
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if (allowed != NULL) {
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for (i = 0; ; i++) {
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if (allowed[i] == NULL) {
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name = allowed[0];
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break;
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}
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if (strcmp(allowed[i], name) == 0)
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break;
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}
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}
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/* Update internal progname if needed. */
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if (name != progname)
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setprogname(name);
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return;
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}
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#else /* !HAVE_GETPROGNAME */
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static const char *progname = "";
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void
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initprogname2(const char *name, const char * const * allowed)
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{
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int i;
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# ifdef HAVE___PROGNAME
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extern const char *__progname;
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if (__progname != NULL && *__progname != '\0')
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progname = __progname;
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else
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# endif
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if ((progname = strrchr(name, '/')) != NULL) {
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progname++;
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} else {
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progname = name;
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}
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/* Check for libtool prefix and strip it if present. */
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if (progname[0] == 'l' && progname[1] == 't' && progname[2] == '-' &&
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progname[3] != '\0')
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progname += 3;
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/* Check allow list if present (first element is the default). */
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if (allowed != NULL) {
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for (i = 0; ; i++) {
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if (allowed[i] == NULL) {
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progname = allowed[0];
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break;
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}
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if (strcmp(allowed[i], progname) == 0)
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break;
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}
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}
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}
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const char *
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sudo_getprogname(void)
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{
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return progname;
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}
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void
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sudo_setprogname(const char *name)
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{
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const char *base = strrchr(name, '/');
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progname = base ? base : name;
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}
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#endif /* !HAVE_GETPROGNAME */
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void
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initprogname(const char *name)
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{
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initprogname2(name, NULL);
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}
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