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fuzzing: Fuzz different print methods

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This is achieved by encoding the type of function used in the first two
bytes.

First byte:
b: buffered

Second byte:
f: formatted
This commit is contained in:
Max Bruckner
2017-02-18 02:31:42 +01:00
parent 4785070ad3
commit c5a09a32a9
15 changed files with 117 additions and 17 deletions
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28
fuzzing/afl.c
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@ -101,12 +101,12 @@ int main(int argc, char** argv)
filename = argv[1];
json = read_file(filename);
if (json == NULL)
if ((json == NULL) || (json[0] == '\0') || (json[1] == '\0'))
{
status = EXIT_FAILURE;
goto cleanup;
}
item = cJSON_Parse(json);
item = cJSON_Parse(json + 2);
if (item == NULL)
{
goto cleanup;
@ -114,7 +114,29 @@ int main(int argc, char** argv)
if ((argc == 3) && (strncmp(argv[2], "yes", 3) == 0))
{
printed_json = cJSON_Print(item);
int do_format = 0;
if (json[1] == 'f')
{
do_format = 1;
}
if (json[0] == 'b')
{
/* buffered printing */
printed_json = cJSON_PrintBuffered(item, 1, do_format);
}
else
{
/* unbuffered printing */
if (do_format)
{
printed_json = cJSON_Print(item);
}
else
{
printed_json = cJSON_PrintUnformatted(item);
}
}
if (printed_json == NULL)
{
status = EXIT_FAILURE;