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/* Copyright (c) 2020, Red Hat, Inc.
*
* Authors: Jakub Jelen <jjelen@redhat.com>
*
* This code is licensed under the GNU LGPL, version 2.1 or later.
* See the COPYING file in the top-level directory.
*/
#include <stdlib.h>
#include <string.h>
#include <libcacard.h>
#include "fuzzer.h"
#include "vcard_emul_type.h"
/* Copied internal structures from vcard_emul_nss.c */
struct VirtualReaderOptionsStruct {
char *name;
char *vname;
VCardEmulType card_type;
char *type_params;
char **cert_name;
int cert_count;
};
struct VCardEmulOptionsStruct {
char *nss_db;
struct VirtualReaderOptionsStruct *vreader;
int vreader_count;
VCardEmulType hw_card_type;
char *hw_type_params;
int use_hw;
};
/* We do not want to fuzz inputs longer than 1024 bytes to avoid need for
* dynamic reallocation inside of the fuzzer. Anything longer should be
* possible to express with shorter strings
*/
size_t kMaxInputLength = 1024;
int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size)
{
int i, j;
VCardEmulOptions *options = NULL;
struct VCardEmulOptionsStruct *my_options = NULL;
char args[1025];
if (Size > kMaxInputLength) {
g_debug("Too long input option");
return 0;
}
memcpy(args, Data, Size);
args[Size] = '\0';
options = vcard_emul_options(args);
if (options == NULL) {
/* Invalid input -- the function should have cleaned up for itself */
return 0;
}
/* There is no sensible way to free options if they were valid */
my_options = (struct VCardEmulOptionsStruct *)options;
for (i = 0; i < my_options->vreader_count; i++) {
g_free(my_options->vreader[i].name);
g_free(my_options->vreader[i].vname);
g_free(my_options->vreader[i].type_params);
for (j = 0; j < my_options->vreader[i].cert_count; j++) {
g_free(my_options->vreader[i].cert_name[j]);
}
g_free(my_options->vreader[i].cert_name);
}
g_free(my_options->vreader);
g_free(my_options->hw_type_params);
g_free(my_options->nss_db);
/* The invalid pointers will be overwritten on next call to parse the options */
return 0;
}
/* vim: set ts=4 sw=4 tw=0 noet expandtab: */
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