pidgin/pidgin

Add fuzzing support for some libpurple features
release-2.x.y
2021-06-24, Jordy Zomer <>
97c51d97d375
Add fuzzing support for some libpurple features

Testing Done:
Hi!

I built and tested all of these fuzzers for libpurple.

You can build them by first building pidgin/libpurple with `--enable-fuzzing` then going into `libpurple/tests` and run `make check`. After that you can run these fuzzers. With a dictionary if you want :)

for example:
```bash
$ ./fuzz_markup_strip_html -dict=dictionaries/html.dict
Dictionary: 465 entries
INFO: Seed: 2274862685
INFO: Loaded 1 modules (3 inline 8-bit counters): 3 [0x5a4ec0, 0x5a4ec3),
INFO: Loaded 1 PC tables (3 PCs): 3 [0x568ee8,0x568f18),
INFO: -max_len is not provided; libFuzzer will not generate inputs larger than 4096 bytes
INFO: A corpus is not provided, starting from an empty corpus
#2 INITED cov: 2 ft: 2 corp: 1/1b exec/s: 0 rss: 30Mb
#1048576 pulse cov: 2 ft: 2 corp: 1/1b lim: 4096 exec/s: 524288 rss: 789Mb
#2097152 pulse cov: 2 ft: 2 corp: 1/1b lim: 4096 exec/s: 524288 rss: 792Mb
```

Best Regards,

Jordy Zomer

Reviewed at https://reviews.imfreedom.org/r/760/
/**
* @file eventloop.c Purple Event Loop API
* @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.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*/
#include "internal.h"
#include "eventloop.h"
static PurpleEventLoopUiOps *eventloop_ui_ops = NULL;
guint
purple_timeout_add(guint interval, GSourceFunc function, gpointer data)
{
PurpleEventLoopUiOps *ops = purple_eventloop_get_ui_ops();
return ops->timeout_add(interval, function, data);
}
guint
purple_timeout_add_seconds(guint interval, GSourceFunc function, gpointer data)
{
PurpleEventLoopUiOps *ops = purple_eventloop_get_ui_ops();
if (ops->timeout_add_seconds)
return ops->timeout_add_seconds(interval, function, data);
else
return ops->timeout_add(1000 * interval, function, data);
}
gboolean
purple_timeout_remove(guint tag)
{
PurpleEventLoopUiOps *ops = purple_eventloop_get_ui_ops();
return ops->timeout_remove(tag);
}
guint
purple_input_add(int source, PurpleInputCondition condition, PurpleInputFunction func, gpointer user_data)
{
PurpleEventLoopUiOps *ops = purple_eventloop_get_ui_ops();
return ops->input_add(source, condition, func, user_data);
}
gboolean
purple_input_remove(guint tag)
{
PurpleEventLoopUiOps *ops = purple_eventloop_get_ui_ops();
return ops->input_remove(tag);
}
int
purple_input_get_error(int fd, int *error)
{
PurpleEventLoopUiOps *ops = purple_eventloop_get_ui_ops();
if (ops->input_get_error)
{
int ret = ops->input_get_error(fd, error);
errno = *error;
return ret;
}
else
{
socklen_t len;
len = sizeof(*error);
return getsockopt(fd, SOL_SOCKET, SO_ERROR, error, &len);
}
}
void
purple_eventloop_set_ui_ops(PurpleEventLoopUiOps *ops)
{
eventloop_ui_ops = ops;
}
PurpleEventLoopUiOps *
purple_eventloop_get_ui_ops(void)
{
g_return_val_if_fail(eventloop_ui_ops != NULL, NULL);
return eventloop_ui_ops;
}