1 files changed, 97 insertions, 0 deletions
diff --git a/crypto/heimdal/appl/gssmask/common.c b/crypto/heimdal/appl/gssmask/common.c
new file mode 100644
index 0000000..a57b803
--- /dev/null
+++ b/crypto/heimdal/appl/gssmask/common.c
@@ -0,0 +1,97 @@
+/*
+ * 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: common.c 18900 2006-11-03 05:21:01Z lha $");
+
+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;
+}