38270cde9d
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@18900 ec53bebd-3082-4978-b11e-865c3cabbd6b
98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
/*
|
|
* Copyright (c) 2006 Kungliga Tekniska Högskolan
|
|
* (Royal Institute of Technology, Stockholm, Sweden).
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* 3. Neither the name of KTH nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software without
|
|
* specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY KTH AND ITS CONTRIBUTORS ``AS IS'' AND ANY
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KTH OR ITS CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
|
|
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
|
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
|
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <common.h>
|
|
RCSID("$Id$");
|
|
|
|
krb5_error_code
|
|
store_string(krb5_storage *sp, const char *str)
|
|
{
|
|
size_t len = strlen(str) + 1;
|
|
krb5_error_code ret;
|
|
|
|
ret = krb5_store_int32(sp, len);
|
|
if (ret)
|
|
return ret;
|
|
ret = krb5_storage_write(sp, str, len);
|
|
if (ret != len)
|
|
return EINVAL;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
add_list(char ****list, size_t *listlen, char **str, size_t len)
|
|
{
|
|
size_t i;
|
|
*list = erealloc(*list, sizeof(**list) * (*listlen + 1));
|
|
|
|
(*list)[*listlen] = ecalloc(len, sizeof(**list));
|
|
for (i = 0; i < len; i++)
|
|
(*list)[*listlen][i] = str[i];
|
|
(*listlen)++;
|
|
}
|
|
|
|
static void
|
|
permute(char ****list, size_t *listlen,
|
|
char **str, const int start, const int len)
|
|
{
|
|
int i, j;
|
|
|
|
#define SWAP(s,i,j) { char *t = str[i]; str[i] = str[j]; str[j] = t; }
|
|
|
|
for (i = start; i < len - 1; i++) {
|
|
for (j = i+1; j < len; j++) {
|
|
SWAP(str,i,j);
|
|
permute(list, listlen, str, i+1, len);
|
|
SWAP(str,i,j);
|
|
}
|
|
}
|
|
add_list(list, listlen, str, len);
|
|
}
|
|
|
|
char ***
|
|
permutate_all(struct getarg_strings *strings, size_t *size)
|
|
{
|
|
char **list, ***all = NULL;
|
|
int i;
|
|
|
|
*size = 0;
|
|
|
|
list = ecalloc(strings->num_strings, sizeof(*list));
|
|
for (i = 0; i < strings->num_strings; i++)
|
|
list[i] = strings->strings[i];
|
|
|
|
permute(&all, size, list, 0, strings->num_strings);
|
|
free(list);
|
|
return all;
|
|
}
|