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