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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/

#include "gtksourceview-marshal.h"

#include <glib-object.h>

#ifdef G_ENABLE_DEBUG

#define g_marshal_value_peek_boolean(v) g_value_get_boolean (v)

#define g_marshal_value_peek_char(v) g_value_get_char (v)

#define g_marshal_value_peek_uchar(v) g_value_get_uchar (v)

#define g_marshal_value_peek_int(v) g_value_get_int (v)

#define g_marshal_value_peek_uint(v) g_value_get_uint (v)

#define g_marshal_value_peek_long(v) g_value_get_long (v)

#define g_marshal_value_peek_ulong(v) g_value_get_ulong (v)

#define g_marshal_value_peek_int64(v) g_value_get_int64 (v)

#define g_marshal_value_peek_uint64(v) g_value_get_uint64 (v)

#define g_marshal_value_peek_enum(v) g_value_get_enum (v)

#define g_marshal_value_peek_flags(v) g_value_get_flags (v)

#define g_marshal_value_peek_float(v) g_value_get_float (v)

#define g_marshal_value_peek_double(v) g_value_get_double (v)

#define g_marshal_value_peek_string(v) (char*) g_value_get_string (v)

#define g_marshal_value_peek_param(v) g_value_get_param (v)

#define g_marshal_value_peek_boxed(v) g_value_get_boxed (v)

#define g_marshal_value_peek_pointer(v) g_value_get_pointer (v)

#define g_marshal_value_peek_object(v) g_value_get_object (v)

#else /* !G_ENABLE_DEBUG */

/* WARNING: This code accesses GValues directly, which is UNSUPPORTED API.

* Do not access GValues directly in your code. Instead, use the

* g_value_get_*() functions

#define g_marshal_value_peek_boolean(v) (v)->data[0].v_int

#define g_marshal_value_peek_char(v) (v)->data[0].v_int

#define g_marshal_value_peek_uchar(v) (v)->data[0].v_uint

#define g_marshal_value_peek_int(v) (v)->data[0].v_int

#define g_marshal_value_peek_uint(v) (v)->data[0].v_uint

#define g_marshal_value_peek_long(v) (v)->data[0].v_long

#define g_marshal_value_peek_ulong(v) (v)->data[0].v_ulong

#define g_marshal_value_peek_int64(v) (v)->data[0].v_int64

#define g_marshal_value_peek_uint64(v) (v)->data[0].v_uint64

#define g_marshal_value_peek_enum(v) (v)->data[0].v_long

#define g_marshal_value_peek_flags(v) (v)->data[0].v_ulong

#define g_marshal_value_peek_float(v) (v)->data[0].v_float

#define g_marshal_value_peek_double(v) (v)->data[0].v_double

#define g_marshal_value_peek_string(v) (v)->data[0].v_pointer

#define g_marshal_value_peek_param(v) (v)->data[0].v_pointer

#define g_marshal_value_peek_boxed(v) (v)->data[0].v_pointer

#define g_marshal_value_peek_pointer(v) (v)->data[0].v_pointer

#define g_marshal_value_peek_object(v) (v)->data[0].v_pointer

#endif /* !G_ENABLE_DEBUG */

/* VOID:VOID (gtksourceview-marshal.list:1) */

/* VOID:BOOLEAN (gtksourceview-marshal.list:2) */

/* VOID:BOXED (gtksourceview-marshal.list:3) */

/* VOID:BOXED,BOXED (gtksourceview-marshal.list:4) */

void

gtksourceview_marshal_VOID__BOXED_BOXED (GClosure *closure,

GValue *return_value,

guint n_param_values,

const GValue *param_values,

gpointer invocation_hint,

gpointer marshal_data)

{

typedef void (*GMarshalFunc_VOID__BOXED_BOXED) (gpointer data1,

gpointer arg_1,

gpointer arg_2,

gpointer data2);

g_return_if_fail (n_param_values == 3);

if (G_CCLOSURE_SWAP_DATA (closure))

{

data1 = closure->data;

data2 = g_value_peek_pointer (param_values + 0);

}

else

{

data1 = g_value_peek_pointer (param_values + 0);

data2 = closure->data;

}

callback = (GMarshalFunc_VOID__BOXED_BOXED) (marshal_data ? marshal_data : cc->callback);

callback (data1,

g_marshal_value_peek_boxed (param_values + 1),

g_marshal_value_peek_boxed (param_values + 2),

data2);

}

/* VOID:STRING (gtksourceview-marshal.list:5) */

pidgin/pidgin