pidgin/pidgin

Use the leaky bucket algorithm to rate limit irc messages.
release-2.x.y
2022-04-23, Gary Kramlich
c49dcf00bee6
Use the leaky bucket algorithm to rate limit irc messages.

The default values were suggested by an operator of libera.

We don't rate limit the login process, nor parts and quits. However, if you
paste a bunch of text and then part a channel, you will be spammed with a
bunch of "no such nick/channel" error dialogs. I tried to work around this,
but the alternative just makes irc unresponsive until all the pasted messages
are sent. That said, other messages are still delayed while these errors
dialogs are slowly popping up.

Testing Done:
Lots

Bugs closed: PIDGIN-11089

Reviewed at https://reviews.imfreedom.org/r/524/
/**
* @file nat-pmp.h NAT-PMP Implementation
* @ingroup core
*/
/* purple
*
* Purple is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* Most code in nat-pmp.h copyright (C) 2007, R. Tyler Ballance, bleep, LLC.
* This file is distributed under the 3-clause (modified) BSD license:
* Redistribution and use in source and binary forms, with or without modification, are permitted
* provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this list of conditions and
* the following disclaimer.
* Neither the name of the bleep. LLC 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT OWNER OR 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.
*/
#ifndef _PURPLE_NAT_PMP_H
#define _PURPLE_NAT_PMP_H
#include <glib.h>
#define PURPLE_PMP_LIFETIME 3600 /* 3600 seconds */
typedef enum {
PURPLE_PMP_TYPE_UDP,
PURPLE_PMP_TYPE_TCP
} PurplePmpType;
/**
* Initialize nat-pmp
*/
void purple_pmp_init(void);
/**
*
*/
char *purple_pmp_get_public_ip(void);
/**
* Remove the NAT-PMP mapping for a specified type on a specified port
*
* @param type The PurplePmpType
* @param privateport The private port on which we are listening locally
* @param publicport The public port on which we are expecting a response
* @param lifetime The lifetime of the mapping. It is recommended that this be PURPLE_PMP_LIFETIME.
*
* @returns TRUE if succesful; FALSE if unsuccessful
*/
gboolean purple_pmp_create_map(PurplePmpType type, unsigned short privateport, unsigned short publicport, int lifetime);
/**
* Remove the NAT-PMP mapping for a specified type on a specified port
*
* @param type The PurplePmpType
* @param privateport The private port on which the mapping was previously made
*
* @returns TRUE if succesful; FALSE if unsuccessful
*/
gboolean purple_pmp_destroy_map(PurplePmpType type, unsigned short privateport);
#endif