6937d41a02
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@23815 ec53bebd-3082-4978-b11e-865c3cabbd6b
98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
/*
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* Copyright (c) 2006 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of KTH nor the names of its contributors may be
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* used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY KTH AND ITS CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KTH OR ITS CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <common.h>
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RCSID("$Id$");
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krb5_error_code
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store_string(krb5_storage *sp, const char *str)
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{
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size_t len = strlen(str) + 1;
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krb5_error_code ret;
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ret = krb5_store_int32(sp, len);
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if (ret)
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return ret;
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ret = krb5_storage_write(sp, str, len);
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if (ret != len)
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return EINVAL;
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return 0;
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}
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static void
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add_list(char ****list, size_t *listlen, char **str, size_t len)
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{
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size_t i;
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*list = erealloc(*list, sizeof(**list) * (*listlen + 1));
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(*list)[*listlen] = ecalloc(len, sizeof(**list));
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for (i = 0; i < len; i++)
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(*list)[*listlen][i] = str[i];
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(*listlen)++;
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}
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static void
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permute(char ****list, size_t *listlen,
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char **str, const int start, const int len)
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{
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int i, j;
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#define SWAP(s,i,j) { char *t = str[i]; str[i] = str[j]; str[j] = t; }
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for (i = start; i < len - 1; i++) {
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for (j = i+1; j < len; j++) {
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SWAP(str,i,j);
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permute(list, listlen, str, i+1, len);
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SWAP(str,i,j);
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}
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}
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add_list(list, listlen, str, len);
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}
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char ***
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permutate_all(struct getarg_strings *strings, size_t *size)
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{
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char **list, ***all = NULL;
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int i;
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*size = 0;
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list = ecalloc(strings->num_strings, sizeof(*list));
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for (i = 0; i < strings->num_strings; i++)
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list[i] = strings->strings[i];
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permute(&all, size, list, 0, strings->num_strings);
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free(list);
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return all;
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}
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