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/
/*
* SendButton - Add a Send button to the conversation window entry area.
* Copyright (C) 2008 Etan Reisner <deryni@pidgin.im>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "internal.h"
#include "version.h"
#include "pidgin.h"
#include "gtkconv.h"
#include "gtkplugin.h"
static void
send_button_cb(GtkButton *button, PidginConversation *gtkconv)
{
g_signal_emit_by_name(gtkconv->entry, "message_send");
}
static void
input_buffer_changed(GtkTextBuffer *text_buffer, GtkWidget *send_button)
{
if (gtk_text_buffer_get_char_count(text_buffer) != 0)
gtk_widget_set_sensitive(send_button, TRUE);
else
gtk_widget_set_sensitive(send_button, FALSE);
}
static void
create_send_button_pidgin(PidginConversation *gtkconv)
{
GtkWidget *send_button;
GtkTextBuffer *buf;
guint signal_id;
send_button = g_object_get_data(G_OBJECT(gtkconv->lower_hbox),
"send_button");
if (send_button != NULL)
return;
send_button = gtk_button_new_with_mnemonic(_("_Send"));
g_signal_connect(G_OBJECT(send_button), "clicked",
G_CALLBACK(send_button_cb), gtkconv);
gtk_box_pack_end(GTK_BOX(gtkconv->lower_hbox), send_button, FALSE,
FALSE, 0);
gtk_widget_show(send_button);
buf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(gtkconv->entry));
if (buf) {
signal_id = g_signal_connect(G_OBJECT(buf), "changed",
G_CALLBACK(input_buffer_changed),
send_button);
g_object_set_data(G_OBJECT(send_button), "buffer-signal",
GINT_TO_POINTER(signal_id));
input_buffer_changed(buf, send_button);
}
g_object_set_data(G_OBJECT(gtkconv->lower_hbox), "send_button",
send_button);
}
static void
remove_send_button_pidgin(PidginConversation *gtkconv)
{
GtkWidget *send_button = NULL;
send_button = g_object_get_data(G_OBJECT(gtkconv->lower_hbox),
"send_button");
if (send_button != NULL) {
GtkTextBuffer *buf;
guint signal_id;
buf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(gtkconv->entry));
signal_id = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(send_button),
"buffer-signal"));
if (buf && signal_id)
g_signal_handler_disconnect(G_OBJECT(buf), signal_id);
gtk_widget_destroy(send_button);
g_object_set_data(G_OBJECT(gtkconv->lower_hbox),
"send_button", NULL);
}
}
static void
conversation_displayed_cb(PidginConversation *gtkconv)
{
GtkWidget *send_button = NULL;
send_button = g_object_get_data(G_OBJECT(gtkconv->lower_hbox),
"send_button");
if (send_button == NULL) {
create_send_button_pidgin(gtkconv);
}
}
static gboolean
plugin_load(PurplePlugin *plugin)
{
GList *convs = purple_get_conversations();
void *gtk_conv_handle = pidgin_conversations_get_handle();
purple_signal_connect(gtk_conv_handle, "conversation-displayed", plugin,
PURPLE_CALLBACK(conversation_displayed_cb), NULL);
/*
purple_signal_connect(gtk_conv_handle, "conversation-hiding", plugin,
PURPLE_CALLBACK(conversation_hiding_cb), NULL);
*/
while (convs) {
PurpleConversation *conv = (PurpleConversation *)convs->data;
/* Setup Send button */
if (PIDGIN_IS_PIDGIN_CONVERSATION(conv)) {
create_send_button_pidgin(PIDGIN_CONVERSATION(conv));
}
convs = convs->next;
}
return TRUE;
}
static gboolean
plugin_unload(PurplePlugin *plugin)
{
GList *convs = purple_get_conversations();
while (convs) {
PurpleConversation *conv = (PurpleConversation *)convs->data;
/* Remove Send button */
if (PIDGIN_IS_PIDGIN_CONVERSATION(conv)) {
remove_send_button_pidgin(PIDGIN_CONVERSATION(conv));
}
convs = convs->next;
}
return TRUE;
}
static PurplePluginInfo info =
{
PURPLE_PLUGIN_MAGIC,
PURPLE_MAJOR_VERSION, /**< major version */
PURPLE_MINOR_VERSION, /**< minor version */
PURPLE_PLUGIN_STANDARD, /**< type */
PIDGIN_PLUGIN_TYPE, /**< ui_requirement */
0, /**< flags */
NULL, /**< dependencies */
PURPLE_PRIORITY_DEFAULT, /**< priority */
"gtksendbutton", /**< id */
N_("Send Button"), /**< name */
DISPLAY_VERSION, /**< version */
N_("Conversation Window Send Button."), /**< summary */
N_("Adds a Send button to the entry area of "
"the conversation window. Intended for use "
"when no physical keyboard is present."), /**< description */
"Etan Reisner <deryni@pidgin.im>", /**< author */
PURPLE_WEBSITE, /**< homepage */
plugin_load, /**< load */
plugin_unload, /**< unload */
NULL, /**< destroy */
NULL, /**< ui_info */
NULL, /**< extra_info */
NULL, /**< prefs_info */
NULL, /**< actions */
/* padding */
NULL,
NULL,
NULL,
NULL
};
static void
init_plugin(PurplePlugin *plugin)
{
}
PURPLE_INIT_PLUGIN(sendbutton, init_plugin, info)