/crypto/heimdal/appl/gssmask/common.c
https://bitbucket.org/freebsd/freebsd-head/ · C · 97 lines · 53 code · 12 blank · 32 comment · 7 complexity · dfc327f783d751a915ad1ca56315f4c8 MD5 · raw file
- /*
- * Copyright (c) 2006 Kungliga Tekniska Hรถgskolan
- * (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;
- }