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nDPI/tests/unit/unit.c

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/*
* unit.c
*
* Copyright (C) 2019-20 - ntop.org
*
* nDPI is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* nDPI 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with nDPI. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifdef __linux__
#include <sched.h>
#endif /* linux */
#ifdef WIN32
#include <winsock2.h>
#include <process.h>
#include <io.h>
#else
#include <getopt.h>
#include <unistd.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/mman.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <search.h>
#include <pcap.h>
#include <signal.h>
#include <pthread.h>
#include <assert.h>
#include <math.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <libgen.h>
#include "ndpi_config.h"
#include "ndpi_api.h"
#include "ndpi_define.h"
#include "json.h" /* JSON-C */
static struct ndpi_detection_module_struct *ndpi_info_mod = NULL;
static int verbose = 0;
/* *********************************************** */
#define FLT_MAX 3.402823466e+38F
int serializerUnitTest() {
ndpi_serializer serializer, serializer_cloned, deserializer;
int i, loop_id;
ndpi_serialization_format fmt = {0};
u_int32_t buffer_len;
char *buffer;
enum json_tokener_error jerr;
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++) {
switch(loop_id) {
case 0:
if (verbose) printf("--- TLV test ---\n");
fmt = ndpi_serialization_format_tlv;
break;
case 1:
if (verbose) printf("--- JSON test ---\n");
fmt = ndpi_serialization_format_json;
break;
case 2:
if (verbose) printf("--- CSV test ---\n");
fmt = ndpi_serialization_format_csv;
break;
}
assert(ndpi_init_serializer(&serializer, fmt) != -1);
for(i=0; i<16; i++) {
char kbuf[32], vbuf[32];
int j = 0;
ndpi_snprintf(vbuf, sizeof(vbuf), "Value %d \t with special chars:\n$!@?", i);
assert(ndpi_serialize_uint32_uint32(&serializer, j++, i*i) != -1);
assert(ndpi_serialize_uint32_string(&serializer, j++, "Data") != -1);
ndpi_snprintf(kbuf, sizeof(kbuf), "Key %d", j++);
assert(ndpi_serialize_string_string(&serializer, kbuf, vbuf) != -1);
ndpi_snprintf(kbuf, sizeof(kbuf), "Key %d", j++);
assert(ndpi_serialize_string_uint32(&serializer, kbuf, i*i) != -1);
ndpi_snprintf(kbuf, sizeof(kbuf), "Key %d", j++);
assert(ndpi_serialize_string_float(&serializer, kbuf, (float)(i*i), "%f") != -1);
if (fmt != ndpi_serialization_format_tlv) {
ndpi_snprintf(kbuf, sizeof(kbuf), "Key %d", j++);
assert(ndpi_serialize_string_double(&serializer, kbuf, ((double)(FLT_MAX))*2, "%lf") != -1);
}
ndpi_snprintf(kbuf, sizeof(kbuf), "Key %d", j++);
assert(ndpi_serialize_string_int64(&serializer, kbuf, INT64_MAX) != -1);
assert(ndpi_serialize_string_string(&serializer, "utf-8", "küche") != -1);
if ((i&0x3) == 0x3) ndpi_serialize_end_of_record(&serializer);
}
if (fmt == ndpi_serialization_format_json) {
assert(ndpi_serialize_start_of_list(&serializer, "List") != -1);
for(i=0; i<4; i++) {
char kbuf[32], vbuf[32];
ndpi_snprintf(kbuf, sizeof(kbuf), "Ignored");
ndpi_snprintf(vbuf, sizeof(vbuf), "Item %d", i);
assert(ndpi_serialize_uint32_uint32(&serializer, i, i*i) != -1);
assert(ndpi_serialize_string_string(&serializer, kbuf, vbuf) != -1);
assert(ndpi_serialize_string_float(&serializer, kbuf, (float)(i*i), "%f") != -1);
}
assert(ndpi_serialize_end_of_list(&serializer) != -1);
assert(ndpi_serialize_string_string(&serializer, "Last", "Ok") != -1);
buffer = ndpi_serializer_get_buffer(&serializer, &buffer_len);
if(verbose)
printf("%s\n", buffer);
/* Decoding JSON to validate syntax */
jerr = json_tokener_success;
j = json_tokener_parse_verbose(buffer, &jerr);
if (j == NULL) {
printf("%s: ERROR (json validation failed: `%s')\n",
__func__, json_tokener_error_desc(jerr));
return -1;
} else {
/* Validation ok */
json_object_put(j);
}
} else if (fmt == ndpi_serialization_format_csv) {
if(verbose) {
buffer_len = 0;
buffer = ndpi_serializer_get_header(&serializer, &buffer_len);
printf("%s\n", buffer);
buffer_len = 0;
buffer = ndpi_serializer_get_buffer(&serializer, &buffer_len);
printf("%s\n", buffer);
}
} else {
if(verbose)
printf("Serialization size: %u\n", ndpi_serializer_get_buffer_len(&serializer));
assert(ndpi_init_deserializer(&deserializer, &serializer) != -1);
while(1) {
ndpi_serialization_type kt, et;
et = ndpi_deserialize_get_item_type(&deserializer, &kt);
if(et == ndpi_serialization_unknown) {
break;
} else if(et == ndpi_serialization_end_of_record) {
if (verbose) printf("EOR\n");
} else {
u_int32_t k32, v32;
int64_t v64;
ndpi_string ks, vs;
float vf;
double vd;
switch(kt) {
case ndpi_serialization_uint32:
ndpi_deserialize_key_uint32(&deserializer, &k32);
if(verbose) printf("%u=", k32);
break;
case ndpi_serialization_string:
ndpi_deserialize_key_string(&deserializer, &ks);
if (verbose) {
u_int8_t bkp = ks.str[ks.str_len];
ks.str[ks.str_len] = '\0';
printf("%s=", ks.str);
ks.str[ks.str_len] = bkp;
}
break;
default:
printf("%s: ERROR Unsupported TLV key type %u (value type %u)\n", __func__, kt, et);
return -1;
}
switch(et) {
case ndpi_serialization_uint32:
assert(ndpi_deserialize_value_uint32(&deserializer, &v32) != -1);
if(verbose) printf("%u\n", v32);
break;
case ndpi_serialization_int64:
assert(ndpi_deserialize_value_int64(&deserializer, &v64) != -1);
if(verbose) printf("%" PRId64 "\n", v64);
break;
case ndpi_serialization_string:
assert(ndpi_deserialize_value_string(&deserializer, &vs) != -1);
if(verbose) {
u_int8_t bkp = vs.str[vs.str_len];
vs.str[vs.str_len] = '\0';
printf("%s\n", vs.str);
vs.str[vs.str_len] = bkp;
}
break;
case ndpi_serialization_float:
assert(ndpi_deserialize_value_float(&deserializer, &vf) != -1);
if(verbose) printf("%f\n", vf);
break;
case ndpi_serialization_double:
assert(ndpi_deserialize_value_double(&deserializer, &vd) != -1);
if(verbose) printf("%lf\n", vd);
break;
default:
if (verbose) printf("\n");
printf("%s: ERROR Unsupported TLV value type %u (key type %u)\n", __func__, et, kt);
return -1;
}
}
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);
}
printf("%30s OK\n", __func__);
return 0;
}
/* *********************************************** */
int serializeProtoUnitTest(void)
{
ndpi_serializer serializer;
int loop_id;
ndpi_serialization_format fmt = {0};
u_int32_t buffer_len;
char * buffer;
for(loop_id=0; loop_id<3; loop_id++) {
switch(loop_id) {
case 0:
if (verbose) printf("--- TLV test ---\n");
fmt = ndpi_serialization_format_tlv;
break;
case 1:
if (verbose) printf("--- JSON test ---\n");
fmt = ndpi_serialization_format_json;
break;
case 2:
if (verbose) printf("--- CSV test ---\n");
fmt = ndpi_serialization_format_csv;
break;
}
assert(ndpi_init_serializer(&serializer, fmt) != -1);
ndpi_protocol ndpi_proto;
ndpi_risk risks = 0;
ndpi_proto.proto.master_protocol = NDPI_PROTOCOL_TLS,
ndpi_proto.proto.app_protocol = NDPI_PROTOCOL_FACEBOOK,
ndpi_proto.protocol_by_ip = NDPI_PROTOCOL_FACEBOOK,
ndpi_proto.category = NDPI_PROTOCOL_CATEGORY_SOCIAL_NETWORK,
ndpi_proto.breed = NDPI_PROTOCOL_FUN;
NDPI_SET_BIT(risks, NDPI_MALFORMED_PACKET);
NDPI_SET_BIT(risks, NDPI_TLS_WEAK_CIPHER);
NDPI_SET_BIT(risks, NDPI_TLS_OBSOLETE_VERSION);
NDPI_SET_BIT(risks, NDPI_TLS_SELFSIGNED_CERTIFICATE);
ndpi_serialize_proto(ndpi_info_mod, &serializer, risks, NDPI_CONFIDENCE_DPI, ndpi_proto);
assert(ndpi_serialize_string_float(&serializer, "float", FLT_MAX, "%f") != -1);
if (fmt != ndpi_serialization_format_tlv)
assert(ndpi_serialize_string_double(&serializer, "double", ((double)(FLT_MAX))*2, "%lf") != -1);
if (fmt == ndpi_serialization_format_json)
{
buffer_len = 0;
buffer = ndpi_serializer_get_buffer(&serializer, &buffer_len);
#ifndef WIN32
char const * const expected_json_str = "{\"flow_risk\": {\"6\": {\"risk\":\"Self-signed Cert\",\"severity\":\"High\",\"risk_score\": {\"total\":300,\"client\":270,\"server\":30}},\"7\": {\"risk\":\"Obsolete TLS (v1.1 or older)\",\"severity\":\"High\",\"risk_score\": {\"total\":310,\"client\":275,\"server\":35}},\"8\": {\"risk\":\"Weak TLS Cipher\",\"severity\":\"High\",\"risk_score\": {\"total\":150,\"client\":135,\"server\":15}},\"17\": {\"risk\":\"Malformed Packet\",\"severity\":\"Low\",\"risk_score\": {\"total\":160,\"client\":80,\"server\":80}}},\"confidence\": {\"6\":\"DPI\"},\"proto\":\"TLS.Facebook\",\"proto_id\":\"91.119\",\"proto_by_ip\":\"Facebook\",\"proto_by_ip_id\":119,\"encrypted\":1,\"breed\":\"Fun\",\"category_id\":6,\"category\":\"SocialNetwork\",\"float\":340282346638528859811704183484516925440.000000,\"double\":680564693277057719623408366969033850880.000000}";
if (strncmp(buffer, expected_json_str, buffer_len) != 0)
{
printf("%s: ERROR: expected JSON str: \"%s\"\n", __func__, expected_json_str);
printf("%s: ERROR: got JSON str.....: \"%.*s\"\n", __func__, (int)buffer_len, buffer);
return -1;
}
#endif
if(verbose)
printf("%s\n", buffer);
/* Decoding JSON to validate syntax */
enum json_tokener_error jerr = json_tokener_success;
json_object * const j = json_tokener_parse_verbose(buffer, &jerr);
if (j == NULL) {
printf("%s: ERROR (json validation failed: `%s')\n",
__func__, json_tokener_error_desc(jerr));
return -1;
} else {
/* Validation ok */
json_object_put(j);
}
} else if (fmt == ndpi_serialization_format_csv)
{
char const * const expected_csv_hdr_str = "risk,severity,total,client,server,risk,severity,total,client,server,risk,severity,total,client,server,risk,severity,total,client,server,6,proto,proto_id,proto_by_ip,proto_by_ip_id,encrypted,breed,category_id,category,float,double";
buffer_len = 0;
buffer = ndpi_serializer_get_header(&serializer, &buffer_len);
assert(buffer != NULL && buffer_len != 0);
if (verbose)
printf("%s\n", buffer);
if (strncmp(buffer, expected_csv_hdr_str, buffer_len) != 0)
{
printf("%s: ERROR: expected CSV str: \"%s\"\n", __func__, expected_csv_hdr_str);
printf("%s: ERROR: got CSV str.....: \"%.*s\"\n", __func__, (int)buffer_len, buffer);
}
char const * const expected_csv_buf_str = "Self-signed Cert,High,300,270,30,Obsolete TLS (v1.1 or older),High,310,275,35,Weak TLS Cipher,High,150,135,15,Malformed Packet,Low,160,80,80,DPI,TLS.Facebook,91.119,Facebook,119,1,Fun,6,SocialNetwork,340282346638528859811704183484516925440.000000,680564693277057719623408366969033850880.000000";
buffer_len = 0;
buffer = ndpi_serializer_get_buffer(&serializer, &buffer_len);
assert(buffer != NULL && buffer_len != 0);
if (verbose)
printf("%s\n", buffer);
if (strncmp(buffer, expected_csv_buf_str, buffer_len) != 0)
{
printf("%s: ERROR: expected CSV str: \"%s\"\n", __func__, expected_csv_buf_str);
printf("%s: ERROR: got CSV str.....: \"%.*s\"\n", __func__, (int)buffer_len, buffer);
}
}
ndpi_term_serializer(&serializer);
}
printf("%30s OK\n", __func__);
return 0;
}
/* *********************************************** */
int main(int argc, char **argv) {
#ifndef WIN32
int c;
#endif
(void)argc;
(void)argv;
if (ndpi_get_api_version() != NDPI_API_VERSION) {
printf("nDPI Library version mismatch: please make sure this code and the nDPI library are in sync\n");
return -1;
}
ndpi_info_mod = ndpi_init_detection_module(NULL);
if (ndpi_info_mod == NULL)
return -1;
if(ndpi_finalize_initialization(ndpi_info_mod) != 0)
return -1;
/*
* If we want argument parsing on Windows,
* we need to re-implement it as Windows has no such function.
*/
#ifndef WIN32
while((c = getopt(argc, argv, "vh")) != -1) {
switch(c) {
case 'v':
verbose = 1;
break;
default:
printf("Usage: unit [-v] [-h]\n");
return(0);
}
}
#else
verbose = 0;
#endif
/* Tests */
if (serializerUnitTest() != 0) return -1;
if (serializeProtoUnitTest() != 0) return -1;
return 0;
}
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