649 lines
23 KiB
C
649 lines
23 KiB
C
/**
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* @file test_etcp_api.c
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* @brief Тест ETCP API (etcp_send, etcp_bind)
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*
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* Аналогичен test_pkt_normalizer_etcp.c, но использует высокоуровневый API:
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* - etcp_send() для отправки пакетов
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* - etcp_bind() для регистрации обработчика полученных пакетов
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "../lib/platform_compat.h"
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#include "test_utils.h"
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#include "test_net.h"
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#ifdef _WIN32
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#include <windows.h>
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#include <direct.h>
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#else
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#include <unistd.h>
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#endif
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#include <time.h>
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#include <sys/stat.h>
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#include "etcp.h"
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#include "etcp_connections.h"
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#include "etcp_api.h"
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#include "../src/config_parser.h"
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#include "../src/utun_instance.h"
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#include "routing.h"
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#include "../src/tun_if.h"
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#include "secure_channel.h"
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#include "pkt_normalizer.h"
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#include "../lib/u_async.h"
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#include "../lib/ll_queue.h"
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#include "../lib/debug_config.h"
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#define TEST_TIMEOUT_MS 3000 // 3 second timeout
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#define TOTAL_PACKETS 100 // Total packets to send
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#define MIN_PACKET_SIZE 10 // Minimum packet size
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#define MAX_TEST_PACKET_SIZE 500 // Maximum packet size (packer aggregates)
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// Temp config file paths
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static char temp_dir[] = "/tmp/utun_test_XXXXXX";
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static char server_config_path[256];
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static char client_config_path[256];
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// ОС выбирает порт слушателя при bind(0).
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static const char* server_config_content =
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"[global]\n"
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"my_node_id=0x1111111111111111\n"
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"my_private_key=38240cb82199e504686507f11f6eaa4f740fde6f0c425c495e49a523019a5d68\n"
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"my_public_key=ce8871f07fa056c636d297115f231b08c29cdf94e0d440fce83a07c34416d36a\n"
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"tun_ip=10.99.0.1/24\n"
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"tun_ifname=tun99\n"
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"\n"
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"[server: test]\n"
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"addr=127.0.0.1:0\n"
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"type=public\n"
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"\n"
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"[allowed_keys]\n"
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"allow_all=1\n";
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// Endpoint пира заполняется после создания слушателя.
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static const char* client_config_content =
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"[global]\n"
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"my_node_id=0x2222222222222222\n"
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"my_private_key=704f2e012c8fa8768130cb0f988a997dccb628372bc5ceccacc78dcbfec5916f\n"
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"my_public_key=b3193173def895bd0fcea6f86af077c7d77216f10395275f627ac18242ec0f01\n"
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"tun_ip=10.99.0.2/24\n"
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"tun_ifname=tun98\n"
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"\n"
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"[server: test]\n"
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"addr=127.0.0.1:0\n"
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"type=public\n"
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"\n"
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"[client: test_client]\n"
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"keepalive=1\n"
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"peer_public_key=ce8871f07fa056c636d297115f231b08c29cdf94e0d440fce83a07c34416d36a\n"
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"link=test:127.0.0.1:0\n";
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// Create temp config files
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static int create_temp_configs(void) {
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if (test_mkdtemp(temp_dir) != 0) {
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fprintf(stderr, "Failed to create temp directory\n");
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return -1;
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}
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snprintf(server_config_path, sizeof(server_config_path), "%s/server.conf", temp_dir);
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snprintf(client_config_path, sizeof(client_config_path), "%s/client.conf", temp_dir);
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FILE* f = fopen(server_config_path, "w");
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if (!f) {
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fprintf(stderr, "Failed to create server config file\n");
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return -1;
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}
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fprintf(f, "%s", server_config_content);
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fclose(f);
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f = fopen(client_config_path, "w");
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if (!f) {
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fprintf(stderr, "Failed to create client config file\n");
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test_unlink(server_config_path);
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return -1;
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}
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fprintf(f, "%s", client_config_content);
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fclose(f);
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return 0;
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}
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// Cleanup temp config files
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static void cleanup_temp_configs(void) {
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if (server_config_path[0]) test_unlink(server_config_path);
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if (client_config_path[0]) test_unlink(client_config_path);
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if (temp_dir[0]) test_rmdir(temp_dir);
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}
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// Packet header size: seq(2) + size(2) + checksum(2) = 6 bytes
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#define PACKET_HEADER_SIZE 6
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// ID пакетов данных (0 = обычные данные по умолчанию)
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#define DATA_PACKET_ID 0
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static struct UTUN_INSTANCE* server_instance = NULL;
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static struct UTUN_INSTANCE* client_instance = NULL;
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static struct UASYNC* ua = NULL;
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static int test_completed = 0;
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static void* packet_timeout_id = NULL;
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// ETCP connections
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static struct ETCP_CONN* client_conn = NULL;
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static struct ETCP_CONN* server_conn = NULL;
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// Test statistics - forward direction (client -> server)
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static int packets_sent_fwd = 0;
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static int packets_received_fwd = 0;
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static int current_packet_seq_fwd = 0;
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// Test statistics - backward direction (server -> client)
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static int packets_sent_back = 0;
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static int packets_received_back = 0;
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static int current_packet_seq_back = 0;
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// Packet sizes for each packet (random)
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static int packet_sizes[TOTAL_PACKETS];
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// Timing variables
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static struct timespec start_time_fwd, end_time_fwd;
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static struct timespec start_time_back, end_time_back;
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static int phase = 0; // 0 = connecting, 1 = forward transfer, 2 = backward transfer
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// Calculate simple checksum (sum of all bytes modulo 65536)
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static uint16_t calculate_checksum(const uint8_t* data, int len) {
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uint32_t sum = 0;
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for (int i = 0; i < len; i++) {
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sum += data[i];
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}
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return (uint16_t)(sum & 0xFFFF);
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}
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// Function to generate packet data with seq, size, checksum and random payload
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// Packet format: [id:1][seq:2][size:2][checksum:2][payload:N]
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static void generate_packet_data(int seq, uint8_t* buffer, int size) {
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// Ensure minimum size for header
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if (size < PACKET_HEADER_SIZE + 1) size = PACKET_HEADER_SIZE + 1;
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// Write header: [id][seq_low][seq_high][size_low][size_high][cs_low][cs_high]
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buffer[0] = DATA_PACKET_ID; // ID пакета (1 byte)
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buffer[1] = (uint8_t)(seq & 0xFF);
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buffer[2] = (uint8_t)((seq >> 8) & 0xFF);
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buffer[3] = (uint8_t)(size & 0xFF);
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buffer[4] = (uint8_t)((size >> 8) & 0xFF);
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// Generate random payload (after header)
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int payload_size = size - PACKET_HEADER_SIZE - 1; // -1 для ID
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for (int i = 0; i < payload_size; i++) {
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buffer[PACKET_HEADER_SIZE + 1 + i] = (uint8_t)(rand() % 256);
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}
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// Calculate and write checksum of payload
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uint16_t checksum = calculate_checksum(buffer + PACKET_HEADER_SIZE + 1, payload_size);
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buffer[5] = (uint8_t)(checksum & 0xFF);
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buffer[6] = (uint8_t)((checksum >> 8) & 0xFF);
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}
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// Verify packet data integrity
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// Packet format: [id:1][seq:2][size:2][checksum:2][payload:N]
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static int verify_packet_data(uint8_t* buffer, int size, int expected_seq) {
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if (size < PACKET_HEADER_SIZE + 1) return 0;
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// Parse header
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uint8_t id = buffer[0];
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int seq = buffer[1] | (buffer[2] << 8);
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int pkt_size = buffer[3] | (buffer[4] << 8);
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int stored_checksum = buffer[5] | (buffer[6] << 8);
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// Check ID
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if (id != DATA_PACKET_ID) {
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DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "Packet ID mismatch: expected=%d, got=%d",
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DATA_PACKET_ID, id);
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return 0;
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}
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// Check sequence number (strict order)
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if (seq != expected_seq) {
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DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "Packet seq mismatch: expected=%d, got=%d",
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expected_seq, seq);
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return 0;
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}
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// Check size
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if (pkt_size != size) {
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DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "Packet size mismatch: expected=%d, got=%d",
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size, pkt_size);
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return 0;
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}
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// Verify checksum of payload
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int payload_size = size - PACKET_HEADER_SIZE - 1;
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uint16_t calculated_checksum = calculate_checksum(buffer + PACKET_HEADER_SIZE + 1, payload_size);
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if (calculated_checksum != stored_checksum) {
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DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "Packet checksum mismatch: stored=%d, calculated=%d",
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stored_checksum, calculated_checksum);
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return 0;
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}
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return 1;
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}
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// Callback для получения пакетов на сервере (forward direction)
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static void server_recv_callback(struct ETCP_CONN* conn, struct ll_entry* entry) {
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(void)conn;
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if (!entry || !entry->dgram || entry->len < PACKET_HEADER_SIZE + 1) {
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DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "Server received invalid packet");
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if (entry) {
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queue_dgram_free(entry);
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queue_entry_free(entry);
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}
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return;
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}
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if (verify_packet_data(entry->dgram, entry->len, packets_received_fwd)) {
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packets_received_fwd++;
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} else {
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int seq = entry->dgram[1] | (entry->dgram[2] << 8);
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DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "Server packet verification failed, seq=%d, expected=%d",
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seq, packets_received_fwd);
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}
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queue_dgram_free(entry);
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queue_entry_free(entry);
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}
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// Callback для получения пакетов на клиенте (backward direction)
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static void client_recv_callback(struct ETCP_CONN* conn, struct ll_entry* entry) {
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(void)conn;
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if (!entry || !entry->dgram || entry->len < PACKET_HEADER_SIZE + 1) {
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DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "Client received invalid packet");
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if (entry) {
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queue_dgram_free(entry);
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queue_entry_free(entry);
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}
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return;
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}
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if (verify_packet_data(entry->dgram, entry->len, packets_received_back)) {
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packets_received_back++;
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} else {
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int seq = entry->dgram[1] | (entry->dgram[2] << 8);
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DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "Client packet verification failed, seq=%d, expected=%d",
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seq, packets_received_back);
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}
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queue_dgram_free(entry);
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queue_entry_free(entry);
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}
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// Check if connection is established and crypto session key is ready
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static int is_connection_established(struct UTUN_INSTANCE* inst) {
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if (!inst) return 0;
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struct ll_entry* entry = inst->connections->head;
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while (entry) {
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struct conn_queue_entry* ce = (struct conn_queue_entry*)entry->data;
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struct ETCP_CONN* conn = ce->conn;
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struct ETCP_LINK* link = conn->links;
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while (link) {
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// Проверяем что линк инициализирован И session_key установлен (не нулевой)
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if (link->initialized && conn->crypto_ctx.initialized) {
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// Проверяем что session_key не нулевой (первый байт не 0 или все не 0)
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int has_session_key = 0;
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for (int i = 0; i < SC_SESSION_KEY_SIZE; i++) {
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if (conn->crypto_ctx.session_key[i] != 0) {
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has_session_key = 1;
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break;
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}
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}
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if (has_session_key) {
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return 1;
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}
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}
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link = link->next;
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}
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entry = entry->next;
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}
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return 0;
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}
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// Get first connection from instance
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static struct ETCP_CONN* get_first_connection(struct UTUN_INSTANCE* inst) {
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if (!inst || !inst->connections) return NULL;
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if (!inst->connections->head) return NULL;
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struct conn_queue_entry* ce = (struct conn_queue_entry*)inst->connections->head->data;
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return ce->conn;
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}
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// Send packets from client to server (forward direction) via etcp_send
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static void send_packets_fwd(void) {
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if (!client_conn || packets_sent_fwd >= TOTAL_PACKETS) {
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return;
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}
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// Start timing on first packet
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if (packets_sent_fwd == 0) {
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clock_gettime(CLOCK_MONOTONIC, &start_time_fwd);
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phase = 1;
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printf("Starting forward transfer (client -> server) via etcp_send...\n");
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fflush(stdout);
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}
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// Send while we have packets
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while (packets_sent_fwd < TOTAL_PACKETS) {
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int size = packet_sizes[packets_sent_fwd];
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// Выделяем entry с dgram через ll_alloc_lldgram
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struct ll_entry* entry = ll_alloc_lldgram(size);
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if (!entry) {
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DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "Failed to allocate entry for packet %d",
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packets_sent_fwd);
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break;
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}
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// Заполняем данные пакета
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generate_packet_data(current_packet_seq_fwd, entry->dgram, size);
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entry->len = size;
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// Отправляем через etcp_send (передаем ownership entry)
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int result = etcp_send(client_conn, entry);
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if (result != 0) {
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DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "etcp_send failed for packet %d",
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packets_sent_fwd);
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// При ошибке освобождаем entry сами
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queue_dgram_free(entry);
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queue_entry_free(entry);
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break;
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}
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packets_sent_fwd++;
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current_packet_seq_fwd++;
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}
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if (packets_sent_fwd >= TOTAL_PACKETS) {
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DEBUG_INFO(DEBUG_CATEGORY_ETCP, "All %d forward packets sent via etcp_send", TOTAL_PACKETS);
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}
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}
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// Send packets from server to client (backward direction) via etcp_send
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static void send_packets_back(void) {
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if (!server_conn || packets_sent_back >= TOTAL_PACKETS) {
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return;
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}
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// Start timing on first packet
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if (packets_sent_back == 0) {
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clock_gettime(CLOCK_MONOTONIC, &start_time_back);
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phase = 2;
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printf("Starting backward transfer (server -> client) via etcp_send...\n");
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fflush(stdout);
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}
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// Send while we have packets
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while (packets_sent_back < TOTAL_PACKETS) {
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int size = packet_sizes[packets_sent_back];
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// Выделяем entry с dgram через ll_alloc_lldgram
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struct ll_entry* entry = ll_alloc_lldgram(size);
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if (!entry) {
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DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "Failed to allocate entry for packet %d",
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packets_sent_back);
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break;
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}
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// Заполняем данные пакета
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generate_packet_data(current_packet_seq_back, entry->dgram, size);
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entry->len = size;
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// Отправляем через etcp_send (передаем ownership entry)
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int result = etcp_send(server_conn, entry);
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if (result != 0) {
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DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "etcp_send failed for packet %d",
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packets_sent_back);
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// При ошибке освобождаем entry сами
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queue_dgram_free(entry);
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queue_entry_free(entry);
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break;
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}
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packets_sent_back++;
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current_packet_seq_back++;
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}
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if (packets_sent_back >= TOTAL_PACKETS) {
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DEBUG_INFO(DEBUG_CATEGORY_ETCP, "All %d backward packets sent via etcp_send", TOTAL_PACKETS);
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}
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}
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// Calculate time difference in milliseconds
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static double time_diff_ms(struct timespec* start, struct timespec* end) {
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double seconds = end->tv_sec - start->tv_sec;
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double nanoseconds = end->tv_nsec - start->tv_nsec;
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return (seconds * 1000.0) + (nanoseconds / 1000000.0);
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}
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// Monitor function
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static void monitor_and_send(void* arg) {
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(void)arg;
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if (test_completed) {
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packet_timeout_id = NULL;
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return;
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}
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static int connection_checked = 0;
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static int connection_delay = 0;
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if (!connection_checked) {
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int client_established = is_connection_established(client_instance);
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int server_established = is_connection_established(server_instance);
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printf("Connection check: client=%d, server=%d\n", client_established, server_established);
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if (client_established && server_established) {
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// Дополнительная задержка для полной инициализации crypto (как в оригинальном тесте)
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connection_delay++;
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if (connection_delay < 50) { // Ждем 50 циклов (~500ms)
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if (!test_completed) {
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packet_timeout_id = uasync_set_timeout(ua, 10, NULL, monitor_and_send, "test_monitor");
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}
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return;
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}
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DEBUG_INFO(DEBUG_CATEGORY_ETCP, "Connection established, starting transmission via etcp_api");
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connection_checked = 1;
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// Получаем соединения
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client_conn = get_first_connection(client_instance);
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server_conn = get_first_connection(server_instance);
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if (!client_conn || !server_conn) {
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printf("Failed to get connections\n");
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test_completed = 2;
|
||
return;
|
||
}
|
||
|
||
printf("Connections ready: client=%p, server=%p\n",
|
||
(void*)client_conn, (void*)server_conn);
|
||
fflush(stdout);
|
||
}
|
||
}
|
||
|
||
if (connection_checked) {
|
||
// Phase 1: Forward transfer (client -> server)
|
||
if (packets_sent_fwd < TOTAL_PACKETS || packets_received_fwd < TOTAL_PACKETS) {
|
||
send_packets_fwd();
|
||
|
||
// Check if forward phase completed
|
||
if (packets_sent_fwd >= TOTAL_PACKETS && packets_received_fwd >= TOTAL_PACKETS) {
|
||
if (end_time_fwd.tv_sec == 0) {
|
||
clock_gettime(CLOCK_MONOTONIC, &end_time_fwd);
|
||
double duration = time_diff_ms(&start_time_fwd, &end_time_fwd);
|
||
printf("Forward transfer completed: %d/%d packets in %.2f ms\n",
|
||
packets_received_fwd, TOTAL_PACKETS, duration);
|
||
fflush(stdout);
|
||
}
|
||
}
|
||
}
|
||
// Phase 2: Backward transfer (server -> client)
|
||
else if (packets_sent_back < TOTAL_PACKETS || packets_received_back < TOTAL_PACKETS) {
|
||
send_packets_back();
|
||
}
|
||
// Check completion
|
||
else {
|
||
clock_gettime(CLOCK_MONOTONIC, &end_time_back);
|
||
double duration_back = time_diff_ms(&start_time_back, &end_time_back);
|
||
double duration_total = time_diff_ms(&start_time_fwd, &end_time_back);
|
||
|
||
printf("Backward transfer completed: %d/%d packets in %.2f ms\n",
|
||
packets_received_back, TOTAL_PACKETS, duration_back);
|
||
|
||
test_completed = 1;
|
||
printf("\n=== SUCCESS: Bidirectional transfer via etcp_api completed! ===\n");
|
||
printf("Forward (client->server): %d/%d packets in %.2f ms\n",
|
||
packets_received_fwd, TOTAL_PACKETS, time_diff_ms(&start_time_fwd, &end_time_fwd));
|
||
printf("Backward (server->client): %d/%d packets in %.2f ms\n",
|
||
packets_received_back, TOTAL_PACKETS, duration_back);
|
||
printf("Total time: %.2f ms\n", duration_total);
|
||
|
||
if (packet_timeout_id) {
|
||
uasync_cancel_timeout(ua, packet_timeout_id);
|
||
packet_timeout_id = NULL;
|
||
}
|
||
return;
|
||
}
|
||
}
|
||
|
||
if (!test_completed) {
|
||
packet_timeout_id = uasync_set_timeout(ua, 10, NULL, monitor_and_send, "test_monitor");
|
||
}
|
||
}
|
||
|
||
// Timeout handler
|
||
static void test_timeout(void* arg) {
|
||
(void)arg;
|
||
if (!test_completed) {
|
||
printf("\n=== TIMEOUT ===\n");
|
||
printf("Forward: Sent: %d/%d, Received: %d/%d\n",
|
||
packets_sent_fwd, TOTAL_PACKETS, packets_received_fwd, TOTAL_PACKETS);
|
||
printf("Backward: Sent: %d/%d, Received: %d/%d\n",
|
||
packets_sent_back, TOTAL_PACKETS, packets_received_back, TOTAL_PACKETS);
|
||
test_completed = 2;
|
||
if (packet_timeout_id) {
|
||
uasync_cancel_timeout(server_instance->ua, packet_timeout_id);
|
||
packet_timeout_id = NULL;
|
||
}
|
||
}
|
||
}
|
||
|
||
int main() {
|
||
// Create temp config files first
|
||
if (create_temp_configs() != 0) {
|
||
fprintf(stderr, "Failed to create temporary config files\n");
|
||
return 1;
|
||
}
|
||
|
||
printf("=== ETCP API Test (etcp_send, etcp_bind) ===\n");
|
||
printf("Testing with %d packets of random sizes (%d-%d bytes)\n\n",
|
||
TOTAL_PACKETS, MIN_PACKET_SIZE, MAX_TEST_PACKET_SIZE);
|
||
|
||
// Generate random packet sizes
|
||
srand((unsigned)time(NULL));
|
||
int total_bytes = 0;
|
||
for (int i = 0; i < TOTAL_PACKETS; i++) {
|
||
packet_sizes[i] = MIN_PACKET_SIZE + rand() % (MAX_TEST_PACKET_SIZE - MIN_PACKET_SIZE + 1);
|
||
total_bytes += packet_sizes[i];
|
||
}
|
||
printf("Total data to transfer: %d bytes (%.2f KB average per packet)\n\n",
|
||
total_bytes, (float)total_bytes / TOTAL_PACKETS / 1024);
|
||
|
||
debug_config_init();
|
||
debug_set_level(DEBUG_LEVEL_WARN);
|
||
debug_set_categories(DEBUG_CATEGORY_ALL);
|
||
|
||
utun_instance_set_tun_init_enabled(0);
|
||
|
||
printf("Creating server...\n");
|
||
ua = uasync_create();
|
||
server_instance = utun_instance_create(ua, server_config_path);
|
||
if (!server_instance || utun_instance_init(server_instance) < 0) {
|
||
printf("Failed to create server\n");
|
||
return 1;
|
||
}
|
||
printf("Server created, waiting for connection...\n\n");
|
||
|
||
printf("Creating client...\n");
|
||
client_instance = utun_instance_create(ua, client_config_path);
|
||
if (client_instance) test_etcp_set_peer(client_instance, "test_client", server_instance, "test");
|
||
if (!client_instance || utun_instance_init(client_instance) < 0) {
|
||
printf("Failed to create client\n");
|
||
return 1;
|
||
}
|
||
printf("Client created\n\n");
|
||
|
||
// Регистрируем callbacks для получения пакетов (per-instance)
|
||
if (etcp_bind(server_instance, DATA_PACKET_ID, server_recv_callback) != 0) {
|
||
printf("Failed to bind server callback\n");
|
||
return 1;
|
||
}
|
||
|
||
if (etcp_bind(client_instance, DATA_PACKET_ID, client_recv_callback) != 0) {
|
||
printf("Failed to bind client callback\n");
|
||
return 1;
|
||
}
|
||
|
||
printf("Callbacks registered for ID=%d (server=%p, client=%p)\n",
|
||
DATA_PACKET_ID, (void*)server_recv_callback, (void*)client_recv_callback);
|
||
|
||
printf("Sending %d packets in each direction via etcp_send...\n", TOTAL_PACKETS);
|
||
packet_timeout_id = uasync_set_timeout(ua, 1000, NULL, monitor_and_send, "test_monitor");
|
||
void* global_timeout_id = uasync_set_timeout(ua, TEST_TIMEOUT_MS*10, NULL, test_timeout, "test_timeout");
|
||
|
||
while (!test_completed) {
|
||
uasync_poll(ua, 100); // 100ms timeout to allow timer processing
|
||
}
|
||
|
||
printf("\nCleaning up...\n");
|
||
|
||
if (packet_timeout_id) uasync_cancel_timeout(ua, packet_timeout_id);
|
||
if (global_timeout_id) uasync_cancel_timeout(ua, global_timeout_id);
|
||
|
||
// Отписываемся от callbacks
|
||
if (server_instance) {
|
||
etcp_unbind(server_instance, DATA_PACKET_ID);
|
||
}
|
||
if (client_instance) {
|
||
etcp_unbind(client_instance, DATA_PACKET_ID);
|
||
}
|
||
|
||
if (server_instance) {
|
||
server_instance->running = 0;
|
||
utun_instance_destroy(server_instance);
|
||
}
|
||
if (client_instance) {
|
||
client_instance->running = 0;
|
||
utun_instance_destroy(client_instance);
|
||
}
|
||
|
||
// Destroy shared uasync instance after both instances are destroyed
|
||
if (ua) {
|
||
uasync_destroy(ua, 0);
|
||
ua = NULL;
|
||
}
|
||
|
||
// Cleanup temp config files
|
||
cleanup_temp_configs();
|
||
|
||
if (test_completed == 1) {
|
||
printf("\n=== TEST PASSED ===\n");
|
||
printf("All %d packets transmitted in each direction via etcp_api\n", TOTAL_PACKETS);
|
||
return 0;
|
||
} else {
|
||
printf("\n=== TEST FAILED ===\n");
|
||
printf("Forward: Sent: %d/%d, Received: %d/%d\n",
|
||
packets_sent_fwd, TOTAL_PACKETS, packets_received_fwd, TOTAL_PACKETS);
|
||
printf("Backward: Sent: %d/%d, Received: %d/%d\n",
|
||
packets_sent_back, TOTAL_PACKETS, packets_received_back, TOTAL_PACKETS);
|
||
return 1;
|
||
}
|
||
}
|