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/*
* This file is part of the Nice GLib ICE library.
*
* (C) 2006-2008 Collabora Ltd.
* Contact: Dafydd Harries
* (C) 2006-2008 Nokia Corporation. All rights reserved.
* Contact: Kai Vehmanen
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Nice GLib ICE library.
*
* The Initial Developers of the Original Code are Collabora Ltd and Nokia
* Corporation. All Rights Reserved.
*
* Contributors:
* Dafydd Harries, Collabora Ltd.
* Youness Alaoui, Collabora Ltd.
* Kai Vehmanen, Nokia
*
* Alternatively, the contents of this file may be used under the terms of the
* the GNU Lesser General Public License Version 2.1 (the "LGPL"), in which
* case the provisions of LGPL are applicable instead of those above. If you
* wish to allow use of your version of this file only under the terms of the
* LGPL and not to allow others to use your version of this file under the
* MPL, indicate your decision by deleting the provisions above and replace
* them with the notice and other provisions required by the LGPL. If you do
* not delete the provisions above, a recipient may use your version of this
* file under either the MPL or the LGPL.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <string.h>
#include "random.h"
#include "random-glib.h"
static NiceRNG * (*nice_rng_new_func) (void) = NULL;
/*
* Creates a new random number generator instance.
*/
NiceRNG *
nice_rng_new (void)
{
if (nice_rng_new_func == NULL)
return nice_rng_glib_new ();
else
return nice_rng_new_func ();
}
/*
* Sets a new generator function.
*/
void
nice_rng_set_new_func (NiceRNG * (*func) (void))
{
nice_rng_new_func = func;
}
/*
* Frees the random number generator instance.
*
* @param rng context
*/
void
nice_rng_free (NiceRNG *rng)
{
rng->free (rng);
}
/*
* Generates random octets.
*
* @param rng context
* @param len number of octets to product
* @param buf buffer to store the results
*/
void
nice_rng_generate_bytes (NiceRNG *rng, guint len, gchar *buf)
{
rng->generate_bytes (rng, len, buf);
}
/*
* Generates a random unsigned integer.
*
* @param rng context
* @param low closed lower bound
* @param high open upper bound
*/
guint
nice_rng_generate_int (NiceRNG *rng, guint low, guint high)
{
return rng->generate_int (rng, low, high);
}
/*
* Generates a stream of octets containing only characters
* with ASCII codecs of 0x41-5A (A-Z), 0x61-7A (a-z),
* 0x30-39 (0-9), 0x2b (+) and 0x2f (/). This matches
* the definition of 'ice-char' in ICE Ispecification,
* section 15.1 (ID-16).
*
* @param rng context
* @param len number of octets to product
* @param buf buffer to store the results
*/
void
nice_rng_generate_bytes_print (NiceRNG *rng, guint len, gchar *buf)
{
guint i;
const gchar *chars =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789"
"+/";
for (i = 0; i < len; i++)
buf[i] = chars[nice_rng_generate_int (rng, 0, strlen (chars))];
}
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