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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/types.h>
#include <stdint.h>
#include <string.h>
#include <check.h>
#include <stdlib.h>
#include <time.h>
#include "../toxcore/TCP_server.h"
#include "../toxcore/TCP_client.h"
#include "../toxcore/util.h"
#if defined(_WIN32) || defined(__WIN32__) || defined (WIN32)
#define c_sleep(x) Sleep(1*x)
#else
#include <unistd.h>
#define c_sleep(x) usleep(1000*x)
#endif
#define NUM_PORTS 3
uint16_t ports[NUM_PORTS] = {1234, 33445, 25643};
START_TEST(test_basic)
{
uint8_t self_public_key[crypto_box_PUBLICKEYBYTES];
uint8_t self_secret_key[crypto_box_SECRETKEYBYTES];
crypto_box_keypair(self_public_key, self_secret_key);
TCP_Server *tcp_s = new_TCP_server(1, NUM_PORTS, ports, self_public_key, self_secret_key, NULL);
ck_assert_msg(tcp_s != NULL, "Failed to create TCP relay server");
ck_assert_msg(tcp_s->num_listening_socks == NUM_PORTS, "Failed to bind to all ports");
sock_t sock = socket(AF_INET6, SOCK_STREAM, IPPROTO_TCP);
struct sockaddr_in6 addr6_loopback = {0};
addr6_loopback.sin6_family = AF_INET6;
addr6_loopback.sin6_port = htons(ports[rand() % NUM_PORTS]);
addr6_loopback.sin6_addr = in6addr_loopback;
int ret = connect(sock, (struct sockaddr *)&addr6_loopback, sizeof(addr6_loopback));
ck_assert_msg(ret == 0, "Failed to connect to TCP relay server");
uint8_t f_public_key[crypto_box_PUBLICKEYBYTES];
uint8_t f_secret_key[crypto_box_SECRETKEYBYTES];
uint8_t f_nonce[crypto_box_NONCEBYTES];
crypto_box_keypair(f_public_key, f_secret_key);
random_nonce(f_nonce);
uint8_t t_secret_key[crypto_box_SECRETKEYBYTES];
uint8_t handshake_plain[TCP_HANDSHAKE_PLAIN_SIZE];
crypto_box_keypair(handshake_plain, t_secret_key);
memcpy(handshake_plain + crypto_box_PUBLICKEYBYTES, f_nonce, crypto_box_NONCEBYTES);
uint8_t handshake[TCP_CLIENT_HANDSHAKE_SIZE];
memcpy(handshake, f_public_key, crypto_box_PUBLICKEYBYTES);
new_nonce(handshake + crypto_box_PUBLICKEYBYTES);
ret = encrypt_data(self_public_key, f_secret_key, handshake + crypto_box_PUBLICKEYBYTES, handshake_plain,
TCP_HANDSHAKE_PLAIN_SIZE, handshake + crypto_box_PUBLICKEYBYTES + crypto_box_NONCEBYTES);
ck_assert_msg(ret == TCP_CLIENT_HANDSHAKE_SIZE - (crypto_box_PUBLICKEYBYTES + crypto_box_NONCEBYTES),
"Encrypt failed.");
ck_assert_msg(send(sock, handshake, TCP_CLIENT_HANDSHAKE_SIZE - 1, 0) == TCP_CLIENT_HANDSHAKE_SIZE - 1, "send Failed.");
c_sleep(50);
do_TCP_server(tcp_s);
c_sleep(50);
do_TCP_server(tcp_s);
c_sleep(50);
ck_assert_msg(send(sock, handshake + (TCP_CLIENT_HANDSHAKE_SIZE - 1), 1, 0) == 1, "send Failed.");
c_sleep(50);
do_TCP_server(tcp_s);
c_sleep(50);
do_TCP_server(tcp_s);
c_sleep(50);
uint8_t response[TCP_SERVER_HANDSHAKE_SIZE];
uint8_t response_plain[TCP_HANDSHAKE_PLAIN_SIZE];
ck_assert_msg(recv(sock, response, TCP_SERVER_HANDSHAKE_SIZE, 0) == TCP_SERVER_HANDSHAKE_SIZE, "recv Failed.");
ret = decrypt_data(self_public_key, f_secret_key, response, response + crypto_box_NONCEBYTES,
TCP_SERVER_HANDSHAKE_SIZE - crypto_box_NONCEBYTES, response_plain);
ck_assert_msg(ret == TCP_HANDSHAKE_PLAIN_SIZE, "Decrypt Failed.");
uint8_t f_nonce_r[crypto_box_NONCEBYTES];
uint8_t f_shared_key[crypto_box_BEFORENMBYTES];
encrypt_precompute(response_plain, t_secret_key, f_shared_key);
memcpy(f_nonce_r, response_plain + crypto_box_BEFORENMBYTES, crypto_box_NONCEBYTES);
uint8_t r_req_p[1 + crypto_box_PUBLICKEYBYTES] = {0};
memcpy(r_req_p + 1, f_public_key, crypto_box_PUBLICKEYBYTES);
uint8_t r_req[2 + 1 + crypto_box_PUBLICKEYBYTES + crypto_box_MACBYTES];
uint16_t size = 1 + crypto_box_PUBLICKEYBYTES + crypto_box_MACBYTES;
size = htons(size);
ret = encrypt_data_fast(f_shared_key, f_nonce, r_req_p, 1 + crypto_box_PUBLICKEYBYTES, r_req + 2);
increment_nonce(f_nonce);
memcpy(r_req, &size, 2);
uint32_t i;
for (i = 0; i < sizeof(r_req); ++i) {
ck_assert_msg(send(sock, r_req + i, 1, 0) == 1, "send Failed.");
//ck_assert_msg(send(sock, r_req, sizeof(r_req), 0) == sizeof(r_req), "send Failed.");
do_TCP_server(tcp_s);
c_sleep(50);
}
do_TCP_server(tcp_s);
c_sleep(50);
uint8_t packet_resp[4096];
int recv_data_len;
ck_assert_msg((recv_data_len = recv(sock, packet_resp, 2 + 2 + crypto_box_PUBLICKEYBYTES + crypto_box_MACBYTES,
0)) == 2 + 2 + crypto_box_PUBLICKEYBYTES + crypto_box_MACBYTES, "recv Failed. %u", recv_data_len);
memcpy(&size, packet_resp, 2);
ck_assert_msg(ntohs(size) == 2 + crypto_box_PUBLICKEYBYTES + crypto_box_MACBYTES, "Wrong packet size.");
uint8_t packet_resp_plain[4096];
ret = decrypt_data_fast(f_shared_key, f_nonce_r, packet_resp + 2, recv_data_len - 2, packet_resp_plain);
ck_assert_msg(ret != -1, "decryption failed");
increment_nonce(f_nonce_r);
ck_assert_msg(packet_resp_plain[0] == 1, "wrong packet id %u", packet_resp_plain[0]);
ck_assert_msg(packet_resp_plain[1] == 0, "connection not refused %u", packet_resp_plain[1]);
ck_assert_msg(memcmp(packet_resp_plain + 2, f_public_key, crypto_box_PUBLICKEYBYTES) == 0, "key in packet wrong");
}
END_TEST
struct sec_TCP_con {
sock_t sock;
uint8_t public_key[crypto_box_PUBLICKEYBYTES];
uint8_t recv_nonce[crypto_box_NONCEBYTES];
uint8_t sent_nonce[crypto_box_NONCEBYTES];
uint8_t shared_key[crypto_box_BEFORENMBYTES];
};
struct sec_TCP_con *new_TCP_con(TCP_Server *tcp_s)
{
struct sec_TCP_con *sec_c = malloc(sizeof(struct sec_TCP_con));
sock_t sock = socket(AF_INET6, SOCK_STREAM, IPPROTO_TCP);
struct sockaddr_in6 addr6_loopback = {0};
addr6_loopback.sin6_family = AF_INET6;
addr6_loopback.sin6_port = htons(ports[rand() % NUM_PORTS]);
addr6_loopback.sin6_addr = in6addr_loopback;
int ret = connect(sock, (struct sockaddr *)&addr6_loopback, sizeof(addr6_loopback));
ck_assert_msg(ret == 0, "Failed to connect to TCP relay server");
uint8_t f_secret_key[crypto_box_SECRETKEYBYTES];
crypto_box_keypair(sec_c->public_key, f_secret_key);
random_nonce(sec_c->sent_nonce);
uint8_t t_secret_key[crypto_box_SECRETKEYBYTES];
uint8_t handshake_plain[TCP_HANDSHAKE_PLAIN_SIZE];
crypto_box_keypair(handshake_plain, t_secret_key);
memcpy(handshake_plain + crypto_box_PUBLICKEYBYTES, sec_c->sent_nonce, crypto_box_NONCEBYTES);
uint8_t handshake[TCP_CLIENT_HANDSHAKE_SIZE];
memcpy(handshake, sec_c->public_key, crypto_box_PUBLICKEYBYTES);
new_nonce(handshake + crypto_box_PUBLICKEYBYTES);
ret = encrypt_data(tcp_s->public_key, f_secret_key, handshake + crypto_box_PUBLICKEYBYTES, handshake_plain,
TCP_HANDSHAKE_PLAIN_SIZE, handshake + crypto_box_PUBLICKEYBYTES + crypto_box_NONCEBYTES);
ck_assert_msg(ret == TCP_CLIENT_HANDSHAKE_SIZE - (crypto_box_PUBLICKEYBYTES + crypto_box_NONCEBYTES),
"Encrypt failed.");
ck_assert_msg(send(sock, handshake, TCP_CLIENT_HANDSHAKE_SIZE - 1, 0) == TCP_CLIENT_HANDSHAKE_SIZE - 1, "send Failed.");
do_TCP_server(tcp_s);
c_sleep(50);
ck_assert_msg(send(sock, handshake + (TCP_CLIENT_HANDSHAKE_SIZE - 1), 1, 0) == 1, "send Failed.");
c_sleep(50);
do_TCP_server(tcp_s);
uint8_t response[TCP_SERVER_HANDSHAKE_SIZE];
uint8_t response_plain[TCP_HANDSHAKE_PLAIN_SIZE];
ck_assert_msg(recv(sock, response, TCP_SERVER_HANDSHAKE_SIZE, 0) == TCP_SERVER_HANDSHAKE_SIZE, "recv Failed.");
ret = decrypt_data(tcp_s->public_key, f_secret_key, response, response + crypto_box_NONCEBYTES,
TCP_SERVER_HANDSHAKE_SIZE - crypto_box_NONCEBYTES, response_plain);
ck_assert_msg(ret == TCP_HANDSHAKE_PLAIN_SIZE, "Decrypt Failed.");
encrypt_precompute(response_plain, t_secret_key, sec_c->shared_key);
memcpy(sec_c->recv_nonce, response_plain + crypto_box_BEFORENMBYTES, crypto_box_NONCEBYTES);
sec_c->sock = sock;
return sec_c;
}
int write_packet_TCP_secure_connection(struct sec_TCP_con *con, uint8_t *data, uint16_t length)
{
uint8_t packet[sizeof(uint16_t) + length + crypto_box_MACBYTES];
uint16_t c_length = htons(length + crypto_box_MACBYTES);
memcpy(packet, &c_length, sizeof(uint16_t));
int len = encrypt_data_fast(con->shared_key, con->sent_nonce, data, length, packet + sizeof(uint16_t));
if ((unsigned int)len != (sizeof(packet) - sizeof(uint16_t)))
return -1;
increment_nonce(con->sent_nonce);
ck_assert_msg(send(con->sock, packet, sizeof(packet), 0) == sizeof(packet), "send failed");
return 0;
}
int read_packet_sec_TCP(struct sec_TCP_con *con, uint8_t *data, uint16_t length)
{
int len;
ck_assert_msg((len = recv(con->sock, data, length, 0)) == length, "wrong len %i\n", len);
ck_assert_msg((len = decrypt_data_fast(con->shared_key, con->recv_nonce, data + 2, length - 2, data)) != -1,
"Decrypt failed");
increment_nonce(con->recv_nonce);
return len;
}
START_TEST(test_some)
{
uint8_t self_public_key[crypto_box_PUBLICKEYBYTES];
uint8_t self_secret_key[crypto_box_SECRETKEYBYTES];
crypto_box_keypair(self_public_key, self_secret_key);
TCP_Server *tcp_s = new_TCP_server(1, NUM_PORTS, ports, self_public_key, self_secret_key, NULL);
ck_assert_msg(tcp_s != NULL, "Failed to create TCP relay server");
ck_assert_msg(tcp_s->num_listening_socks == NUM_PORTS, "Failed to bind to all ports");
struct sec_TCP_con *con1 = new_TCP_con(tcp_s);
struct sec_TCP_con *con2 = new_TCP_con(tcp_s);
struct sec_TCP_con *con3 = new_TCP_con(tcp_s);
uint8_t requ_p[1 + crypto_box_PUBLICKEYBYTES];
requ_p[0] = 0;
memcpy(requ_p + 1, con3->public_key, crypto_box_PUBLICKEYBYTES);
write_packet_TCP_secure_connection(con1, requ_p, sizeof(requ_p));
memcpy(requ_p + 1, con1->public_key, crypto_box_PUBLICKEYBYTES);
write_packet_TCP_secure_connection(con3, requ_p, sizeof(requ_p));
do_TCP_server(tcp_s);
c_sleep(50);
uint8_t data[2048];
int len = read_packet_sec_TCP(con1, data, 2 + 1 + 1 + crypto_box_PUBLICKEYBYTES + crypto_box_MACBYTES);
ck_assert_msg(len == 1 + 1 + crypto_box_PUBLICKEYBYTES, "wrong len %u", len);
ck_assert_msg(data[0] == 1, "wrong packet id %u", data[0]);
ck_assert_msg(data[1] == 16, "connection not refused %u", data[1]);
ck_assert_msg(memcmp(data + 2, con3->public_key, crypto_box_PUBLICKEYBYTES) == 0, "key in packet wrong");
len = read_packet_sec_TCP(con3, data, 2 + 1 + 1 + crypto_box_PUBLICKEYBYTES + crypto_box_MACBYTES);
ck_assert_msg(len == 1 + 1 + crypto_box_PUBLICKEYBYTES, "wrong len %u", len);
ck_assert_msg(data[0] == 1, "wrong packet id %u", data[0]);
ck_assert_msg(data[1] == 16, "connection not refused %u", data[1]);
ck_assert_msg(memcmp(data + 2, con1->public_key, crypto_box_PUBLICKEYBYTES) == 0, "key in packet wrong");
uint8_t test_packet[512] = {16, 17, 16, 86, 99, 127, 255, 189, 78};
write_packet_TCP_secure_connection(con3, test_packet, sizeof(test_packet));
write_packet_TCP_secure_connection(con3, test_packet, sizeof(test_packet));
write_packet_TCP_secure_connection(con3, test_packet, sizeof(test_packet));
c_sleep(50);
do_TCP_server(tcp_s);
c_sleep(50);
len = read_packet_sec_TCP(con1, data, 2 + 2 + crypto_box_MACBYTES);
ck_assert_msg(len == 2, "wrong len %u", len);
ck_assert_msg(data[0] == 2, "wrong packet id %u", data[0]);
ck_assert_msg(data[1] == 16, "wrong peer id %u", data[1]);
len = read_packet_sec_TCP(con3, data, 2 + 2 + crypto_box_MACBYTES);
ck_assert_msg(len == 2, "wrong len %u", len);
ck_assert_msg(data[0] == 2, "wrong packet id %u", data[0]);
ck_assert_msg(data[1] == 16, "wrong peer id %u", data[1]);
len = read_packet_sec_TCP(con1, data, 2 + sizeof(test_packet) + crypto_box_MACBYTES);
ck_assert_msg(len == sizeof(test_packet), "wrong len %u", len);
ck_assert_msg(memcmp(data, test_packet, sizeof(test_packet)) == 0, "packet is wrong %u %u %u %u", data[0], data[1],
data[sizeof(test_packet) - 2], data[sizeof(test_packet) - 1]);
len = read_packet_sec_TCP(con1, data, 2 + sizeof(test_packet) + crypto_box_MACBYTES);
ck_assert_msg(len == sizeof(test_packet), "wrong len %u", len);
ck_assert_msg(memcmp(data, test_packet, sizeof(test_packet)) == 0, "packet is wrong %u %u %u %u", data[0], data[1],
data[sizeof(test_packet) - 2], data[sizeof(test_packet) - 1]);
len = read_packet_sec_TCP(con1, data, 2 + sizeof(test_packet) + crypto_box_MACBYTES);
ck_assert_msg(len == sizeof(test_packet), "wrong len %u", len);
ck_assert_msg(memcmp(data, test_packet, sizeof(test_packet)) == 0, "packet is wrong %u %u %u %u", data[0], data[1],
data[sizeof(test_packet) - 2], data[sizeof(test_packet) - 1]);
write_packet_TCP_secure_connection(con1, test_packet, sizeof(test_packet));
write_packet_TCP_secure_connection(con1, test_packet, sizeof(test_packet));
write_packet_TCP_secure_connection(con1, test_packet, sizeof(test_packet));
c_sleep(50);
do_TCP_server(tcp_s);
c_sleep(50);
len = read_packet_sec_TCP(con3, data, 2 + sizeof(test_packet) + crypto_box_MACBYTES);
ck_assert_msg(len == sizeof(test_packet), "wrong len %u", len);
ck_assert_msg(memcmp(data, test_packet, sizeof(test_packet)) == 0, "packet is wrong %u %u %u %u", data[0], data[1],
data[sizeof(test_packet) - 2], data[sizeof(test_packet) - 1]);
len = read_packet_sec_TCP(con3, data, 2 + sizeof(test_packet) + crypto_box_MACBYTES);
ck_assert_msg(len == sizeof(test_packet), "wrong len %u", len);
ck_assert_msg(memcmp(data, test_packet, sizeof(test_packet)) == 0, "packet is wrong %u %u %u %u", data[0], data[1],
data[sizeof(test_packet) - 2], data[sizeof(test_packet) - 1]);
len = read_packet_sec_TCP(con3, data, 2 + sizeof(test_packet) + crypto_box_MACBYTES);
ck_assert_msg(len == sizeof(test_packet), "wrong len %u", len);
ck_assert_msg(memcmp(data, test_packet, sizeof(test_packet)) == 0, "packet is wrong %u %u %u %u", data[0], data[1],
data[sizeof(test_packet) - 2], data[sizeof(test_packet) - 1]);
uint8_t ping_packet[1 + sizeof(uint64_t)] = {4, 8, 6, 9, 67};
write_packet_TCP_secure_connection(con1, ping_packet, sizeof(ping_packet));
c_sleep(50);
do_TCP_server(tcp_s);
c_sleep(50);
len = read_packet_sec_TCP(con1, data, 2 + sizeof(ping_packet) + crypto_box_MACBYTES);
ck_assert_msg(len == sizeof(ping_packet), "wrong len %u", len);
ck_assert_msg(data[0] == 5, "wrong packet id %u", data[0]);
ck_assert_msg(memcmp(ping_packet + 1, data + 1, sizeof(uint64_t)) == 0, "wrong packet data");
}
END_TEST
START_TEST(test_client)
{
unix_time_update();
uint8_t self_public_key[crypto_box_PUBLICKEYBYTES];
uint8_t self_secret_key[crypto_box_SECRETKEYBYTES];
crypto_box_keypair(self_public_key, self_secret_key);
TCP_Server *tcp_s = new_TCP_server(1, NUM_PORTS, ports, self_public_key, self_secret_key, NULL);
ck_assert_msg(tcp_s != NULL, "Failed to create TCP relay server");
ck_assert_msg(tcp_s->num_listening_socks == NUM_PORTS, "Failed to bind to all ports");
uint8_t f_public_key[crypto_box_PUBLICKEYBYTES];
uint8_t f_secret_key[crypto_box_SECRETKEYBYTES];
crypto_box_keypair(f_public_key, f_secret_key);
IP_Port ip_port_tcp_s;
ip_port_tcp_s.port = htons(ports[rand() % NUM_PORTS]);
ip_port_tcp_s.ip.family = AF_INET6;
ip_port_tcp_s.ip.ip6.in6_addr = in6addr_loopback;
TCP_Client_Connection *conn = new_TCP_connection(ip_port_tcp_s, self_public_key, f_public_key, f_secret_key);
c_sleep(50);
do_TCP_connection(conn);
ck_assert_msg(conn->status == TCP_CLIENT_UNCONFIRMED, "Wrong status. Expected: %u, is: %u", TCP_CLIENT_UNCONFIRMED,
conn->status);
c_sleep(50);
do_TCP_server(tcp_s);
c_sleep(50);
do_TCP_connection(conn);
ck_assert_msg(conn->status == TCP_CLIENT_CONFIRMED, "Wrong status. Expected: %u, is: %u", TCP_CLIENT_CONFIRMED,
conn->status);
}
END_TEST
START_TEST(test_client_invalid)
{
unix_time_update();
uint8_t self_public_key[crypto_box_PUBLICKEYBYTES];
uint8_t self_secret_key[crypto_box_SECRETKEYBYTES];
crypto_box_keypair(self_public_key, self_secret_key);
uint8_t f_public_key[crypto_box_PUBLICKEYBYTES];
uint8_t f_secret_key[crypto_box_SECRETKEYBYTES];
crypto_box_keypair(f_public_key, f_secret_key);
IP_Port ip_port_tcp_s;
ip_port_tcp_s.port = htons(ports[rand() % NUM_PORTS]);
ip_port_tcp_s.ip.family = AF_INET6;
ip_port_tcp_s.ip.ip6.in6_addr = in6addr_loopback;
TCP_Client_Connection *conn = new_TCP_connection(ip_port_tcp_s, self_public_key, f_public_key, f_secret_key);
c_sleep(50);
do_TCP_connection(conn);
ck_assert_msg(conn->status == TCP_CLIENT_CONNECTING, "Wrong status. Expected: %u, is: %u", TCP_CLIENT_CONNECTING,
conn->status);
c_sleep(5000);
do_TCP_connection(conn);
ck_assert_msg(conn->status == TCP_CLIENT_CONNECTING, "Wrong status. Expected: %u, is: %u", TCP_CLIENT_CONNECTING,
conn->status);
c_sleep(6000);
do_TCP_connection(conn);
ck_assert_msg(conn->status == TCP_CLIENT_DISCONNECTED, "Wrong status. Expected: %u, is: %u", TCP_CLIENT_DISCONNECTED,
conn->status);
}
END_TEST
#define DEFTESTCASE(NAME) \
TCase *tc_##NAME = tcase_create(#NAME); \
tcase_add_test(tc_##NAME, test_##NAME); \
suite_add_tcase(s, tc_##NAME);
#define DEFTESTCASE_SLOW(NAME, TIMEOUT) \
DEFTESTCASE(NAME) \
tcase_set_timeout(tc_##NAME, TIMEOUT);
Suite *TCP_suite(void)
{
Suite *s = suite_create("TCP");
DEFTESTCASE_SLOW(basic, 5);
DEFTESTCASE_SLOW(some, 10);
DEFTESTCASE_SLOW(client, 10);
DEFTESTCASE_SLOW(client_invalid, 15);
return s;
}
int main(int argc, char *argv[])
{
srand((unsigned int) time(NULL));
Suite *TCP = TCP_suite();
SRunner *test_runner = srunner_create(TCP);
int number_failed = 0;
srunner_run_all(test_runner, CK_NORMAL);
number_failed = srunner_ntests_failed(test_runner);
srunner_free(test_runner);
return number_failed;
}
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