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/* Chrysalide - Outil d'analyse de fichiers binaires
* fast-rost.c - fichier d'entrée du centre de collecte, adapté pour un fuzzing optimal
*
* Copyright (C) 2023 Cyrille Bagard
*
* This file is part of Chrysalide.
*
* Chrysalide 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 3 of the License, or
* (at your option) any later version.
*
* Chrysalide 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <assert.h>
#include <getopt.h>
#include <libgen.h>
#include <locale.h>
#include <malloc.h>
#include <stdlib.h>
#include <string.h>
#include <i18n.h>
#include <analysis/contents/file.h>
#include <analysis/scan/options.h>
#include <analysis/scan/scanner.h>
#include <analysis/scan/patterns/backends/bitap.h>
#include <analysis/scan/patterns/backends/acism.h>
#include <core/core.h>
#include <core/global.h>
#include <core/logs.h>
#include <core/paths.h>
#include <plugins/pglist.h>
#ifndef __AFL_FUZZ_TESTCASE_LEN
ssize_t fuzz_len;
unsigned char fuzz_buf[1024000];
# define __AFL_FUZZ_TESTCASE_LEN fuzz_len
# define __AFL_FUZZ_TESTCASE_BUF fuzz_buf
# define __AFL_FUZZ_INIT() void sync(void);
# define __AFL_LOOP(x) \
((fuzz_len = read(0, fuzz_buf, sizeof(fuzz_buf))) > 0 ? 1 : 0)
# define __AFL_INIT() sync()
#endif
__AFL_FUZZ_INIT();
/******************************************************************************
* *
* Paramètres : argc = nombre d'arguments dans la ligne de commande. *
* argv = arguments de la ligne de commande. *
* *
* Description : Point d'entrée du programme. *
* *
* Retour : EXIT_SUCCESS si le prgm s'est déroulé sans encombres. *
* *
* Remarques : - *
* *
******************************************************************************/
int main(int argc, char **argv)
{
int result; /* Bilan de l'exécution */
bool check_only; /* Validation uniquement */
LogMessageType verbosity; /* Niveau de filtre de message */
GScanOptions *options; /* Options d'analyses */
int index; /* Indice d'argument */
int ret; /* Bilan d'un appel */
char *edir; /* Répertoire de base effectif */
char *target; /* Cible communiquée */
unsigned char *afl_buf; /* Tampon de travail d'AFL */
int afl_len; /* Taille de ce tampon */
GContentScanner *scanner; /* Encadrement d'une recherche */
GBinContent *content; /* Contenu à analyser */
GScanContext *context; /* Contexte des trouvailles */
sized_string_t padding; /* Bourrage pour le JSON */
bool full; /* Détailler l'affichage ? */
static struct option long_options[] = {
{ "algorithm", required_argument, NULL, 'A' },
{ "check-only", no_argument, NULL, 'C' },
{ "print-json", no_argument, NULL, 'j' },
{ "print-strings", no_argument, NULL, 's' },
{ "print-stats", no_argument, NULL, 'S' },
{ "print-tags", no_argument, NULL, 'g' },
{ "tag", required_argument, NULL, 't' },
{ "verbosity", required_argument, NULL, 'V' },
{ NULL, 0, NULL, 0 }
};
result = EXIT_FAILURE;
/* Décodage des options */
check_only = false;
verbosity = LMT_COUNT;
options = g_scan_options_new();
g_scan_options_set_backend_for_data(options, G_TYPE_ACISM_BACKEND);
while (true)
{
ret = getopt_long(argc, argv, "A:CjsSgt:V:", long_options, &index);
if (ret == -1) break;
switch (ret)
{
case 'A':
if (strcmp(optarg, "bitmap") == 0)
g_scan_options_set_backend_for_data(options, G_TYPE_BITAP_BACKEND);
else if (strcmp(optarg, "acism") == 0)
g_scan_options_set_backend_for_data(options, G_TYPE_ACISM_BACKEND);
else
g_scan_options_set_backend_for_data(options, G_TYPE_INVALID);
break;
case 'C':
check_only = true;
g_scan_options_set_check_only(options, true);
break;
case 'j':
g_scan_options_set_print_json(options, true);
break;
case 's':
g_scan_options_set_print_strings(options, true);
break;
case 'S':
g_scan_options_set_print_stats(options, true);
break;
case 'g':
g_scan_options_set_print_tags(options, true);
break;
case 't':
g_scan_options_select_tag(options, optarg);
break;
case 'V':
verbosity = strtoul(optarg, NULL, 10);
break;
}
}
if ((check_only && (optind + 0) != argc && (optind + 1) != argc)
|| (!check_only && (optind + 1) != argc && (optind + 2) != argc))
{
goto done;
}
/* Actions de base */
if (g_scan_options_get_backend_for_data(options) == G_TYPE_INVALID)
{
goto done;
}
/* Lancement des choses sérieuses */
setlocale(LC_ALL, "");
edir = get_effective_directory(LOCALE_DIR);
bindtextdomain(PACKAGE, edir);
free(edir);
textdomain(PACKAGE);
/* Initialisation de GTK */
g_set_prgname("ROST");
//gtk_init(&argc, &argv);
/* Initialisation du programme */
set_batch_mode();
set_log_verbosity(verbosity);
if (!load_all_core_components(true))
goto done;
init_all_plugins(true);
/* Traitement des recherches */
if ((optind + 1) == argc)
target = argv[optind];
else
goto done;
__AFL_INIT();
afl_buf = __AFL_FUZZ_TESTCASE_BUF;
while (__AFL_LOOP(10000))
{
afl_len = __AFL_FUZZ_TESTCASE_LEN;
scanner = g_content_scanner_new_from_text((char *)afl_buf, afl_len);
#if 0
do
{
FILE *stream;
stream = fopen("/dev/shm/ctrl.log", "a");
fprintf(stream, "running %d bytes => %p\n", afl_len, scanner);
fclose(stream);
} while (0);
#endif
if (scanner != NULL)
result = EXIT_SUCCESS;
if (scanner != NULL && !check_only)
{
content = g_file_content_new(target);
if (content == NULL) goto bad_file_content;
context = g_content_scanner_analyze(scanner, options, content);
if (g_scan_options_get_print_json(options))
{
padding.data = " ";
padding.len = 3;
g_content_scanner_output_to_json(scanner, context, &padding, 0, STDOUT_FILENO);
}
else
{
full = g_scan_options_get_print_strings(options);
g_content_scanner_output_to_text(scanner, context, full, STDOUT_FILENO);
}
g_object_unref(G_OBJECT(context));
g_object_unref(G_OBJECT(content));
bad_file_content:
g_object_unref(G_OBJECT(scanner));
}
}
g_object_unref(G_OBJECT(options));
/* Sortie */
unload_all_core_components(false);
done:
return result;
}
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