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/* functions to compare a string/list
* Copyright (C) 2006 Michael Richardson <mcr@xelerance.com>
* Copyright (C) 2012 Paul Wouters <paul@libreswan.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <https://www.gnu.org/licenses/gpl2.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
*/
#include <unistd.h>
#include <stdlib.h>
#include <limits.h>
#include <stdio.h>
#include "sysdep.h"
#include "constants.h"
#include "lswalloc.h"
#include "whack.h"
/*
* lsw_alias_cmp: is name found in aliases?
*
* aliases is a string of whitespace-separated names (or a NULL pointer).
* Assumption: names do not contain whitespace.
*/
bool lsw_alias_cmp(const char *name, const char *aliases)
{
if (aliases == NULL)
return false;
size_t nlen = strlen(name);
for (const char *s = aliases;;) {
s += strspn(s, " \t"); /* skip whitespace */
if (*s == '\0')
return false; /* string exhausted */
size_t aw = strcspn(s, " \t"); /* alias width */
if (aw == nlen && strneq(s, name, nlen))
return true; /* found */
s += aw; /* skip this alias */
}
}
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