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fuzz: add a new fuzzer to test serialization/deserialization code (#1876)

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Autodetecting the needed buffer size is quite complex (especially with
float/double values) so it is mandatory to properly check for
`ndpi_snprintf` truncation.
These issues have been undetected so far probably because the default
buffer is big enough for all common cases.

Add an example of usage of `ndpi_deserialize_clone_all()` (taken from
`ntopng`)
This commit is contained in:
Ivan Nardi 2023-01-27 07:09:18 +01:00 • committed by GitHub
parent eea9956430
commit 6d00a9e0bd
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144 changed files with 564 additions and 78 deletions
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15
tests/unit/unit.c
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@ -65,7 +65,7 @@ static int verbose = 0;
#define FLT_MAX 3.402823466e+38F
int serializerUnitTest() {
ndpi_serializer serializer, deserializer;
ndpi_serializer serializer, serializer_cloned, deserializer;
int i, loop_id;
ndpi_serialization_format fmt = {0};
u_int32_t buffer_len;
@ -74,6 +74,7 @@ int serializerUnitTest() {
json_object *j;
memset(&serializer, 0, sizeof(serializer));
memset(&serializer_cloned, 0, sizeof(serializer_cloned));
memset(&deserializer, 0, sizeof(deserializer));
for(loop_id=0; loop_id<3; loop_id++) {
@ -234,6 +235,18 @@ int serializerUnitTest() {
ndpi_deserialize_next(&deserializer);
}
/* Converting from TLV to JSON */
assert(ndpi_init_deserializer(&deserializer, &serializer) != -1);
assert(ndpi_init_serializer(&serializer_cloned, ndpi_serialization_format_json) != -1);
assert(ndpi_deserialize_clone_all(&deserializer, &serializer_cloned) == 0);
buffer = ndpi_serializer_get_buffer(&serializer_cloned, &buffer_len);
if(verbose)
printf("TLV->JSON: %s\n", buffer);
ndpi_term_serializer(&serializer_cloned);
}
ndpi_term_serializer(&serializer);