Add packet injector test frame

test/CMakeLists.txt

@@ -1,15 +1,11 @@
-add_executable(gtest_build_tcp_packet gtest_build_tcp_packet.cpp)
-target_link_libraries(gtest_build_tcp_packet core gtest)
-
-add_executable(gtest_build_udp_packet gtest_build_udp_packet.cpp)
-target_link_libraries(gtest_build_udp_packet core gtest)
+add_executable(gtest_inject_tcp_rst gtest_inject_tcp_rst.cpp packet_injector_test_frame.cpp)
+target_link_libraries(gtest_inject_tcp_rst core gtest)
 
 include(GoogleTest)
-gtest_discover_tests(gtest_build_tcp_packet)
-gtest_discover_tests(gtest_build_udp_packet)
+gtest_discover_tests(gtest_inject_tcp_rst)
 
 add_executable(packet_injector packet_injector.cpp)
 target_link_libraries(packet_injector core gtest)
 
-file(COPY ./conf/log.toml DESTINATION ./conf/)
-file(COPY ./conf/stellar.toml DESTINATION ./conf/)
+file(COPY ./conf/ DESTINATION ./conf/)
+file(COPY ./pcap/ DESTINATION ./pcap/)

test/README.md

@@ -29,4 +29,12 @@ tcpdump -i virtio_dign_s host 192.0.2.110 and port 80 -n -v -w virtio_dign_s.pca
 ``` shell
 kubectl -n tsg-os-system exec -it dign-client-9h8rm -c dign-client sh
 curl -v http://http.badssl.selftest.gdnt-cloud.website --resolve "http.badssl.selftest.gdnt-cloud.website:80:192.0.2.110"
-```
+```
+
+## 结果
+
+| -t          | -c          | -n          | Note                         | result      |
+| ----------- | ----------- | ----------- | ---------------------------- | ----------- |
+| tcp-rst     | c2s-packet  | 1           | After recv SYN               | Failed      |
+| tcp-rst     | s2c-packet  | 1           | After recv SYN-ACK           | Success     |
+| tcp-rst     | c2s-packet  | 2           | After recv Sub-ACK           | Success     |

test/gtest_build_tcp_packet.cpp

@@ -1,63 +0,0 @@
-#include <gtest/gtest.h>
-
-#include "inject_priv.h"
-
-/******************************************************************************
- * BUILD_TCP_PACKET
- ******************************************************************************/
-
-// IPv4
-TEST(BUILD_IPV4_BASED_TCP_PACKET, WITH_RST)
-{
-    // TODO
-}
-
-TEST(BUILD_IPV4_BASED_TCP_PACKET, WITH_FIN)
-{
-    // TODO
-}
-
-TEST(BUILD_IPV4_BASED_TCP_PACKET, WITH_PAYLOD)
-{
-    // TODO
-}
-
-// IPv6
-TEST(BUILD_IPV6_BASED_TCP_PACKET, WITH_RST)
-{
-    // TODO
-}
-
-TEST(BUILD_IPV6_BASED_TCP_PACKET, WITH_FIN)
-{
-    // TODO
-}
-
-TEST(BUILD_IPV6_BASED_TCP_PACKET, WITH_PAYLOD)
-{
-    // TODO
-}
-
-// IPv4 + IPv6
-TEST(BUILD_IPV4_IPV6_BASED_TCP_PACKET, WITH_RST)
-{
-    // TODO
-}
-
-// IPv6 + IPv4
-TEST(BUILD_IPV6_IPV4_BASED_TCP_PACKET, WITH_RST)
-{
-    // TODO
-}
-
-// GRE
-TEST(BUILD_GRE_BASED_TCP_PACKET, WITH_RST)
-{
-    // TODO
-}
-
-int main(int argc, char **argv)
-{
-    ::testing::InitGoogleTest(&argc, argv);
-    return RUN_ALL_TESTS();
-}

test/gtest_build_udp_packet.cpp

@@ -1,53 +0,0 @@
-#include <gtest/gtest.h>
-
-#include "inject_priv.h"
-
-/******************************************************************************
- * BUILD_UDP_PACKET
- ******************************************************************************/
-
-// IPv4
-TEST(BUILD_IPV4_BASED_UDP_PACKET, NO_PAYLOD)
-{
-    // TODO
-}
-
-TEST(BUILD_IPV4_BASED_UDP_PACKET, WITH_PAYLOD)
-{
-    // TODO
-}
-
-// IPv6
-TEST(BUILD_IPV6_BASED_UDP_PACKET, NO_PAYLOD)
-{
-    // TODO
-}
-
-TEST(BUILD_IPV6_BASED_UDP_PACKET, WITH_PAYLOD)
-{
-    // TODO
-}
-
-// IPv4 + IPv6
-TEST(BUILD_IPV4_IPV6_BASED_UDP_PACKET, WITH_PAYLOD)
-{
-    // TODO
-}
-
-// IPv6 + IPv4
-TEST(BUILD_IPV6_IPV4_BASED_UDP_PACKET, WITH_PAYLOD)
-{
-    // TODO
-}
-
-// GRE
-TEST(BUILD_GRE_BASED_UDP_PACKET, WITH_PAYLOD)
-{
-    // TODO
-}
-
-int main(int argc, char **argv)
-{
-    ::testing::InitGoogleTest(&argc, argv);
-    return RUN_ALL_TESTS();
-}

test/gtest_inject_tcp_rst.cpp

@@ -0,0 +1,39 @@
+#include <gtest/gtest.h>
+
+#include "packet_injector_test_frame.h"
+
+TEST(INJECT_IPV4_BASED_TCP_RST, AFTER_RECV_SYN_ACK)
+{
+    struct packet_injector_case test = {
+        // descriptor
+        .finish_clean_work_dir = 1,
+        .descriptor = "Inject IPv4 based TCP RST after receiving SYN-ACK packet.",
+        .work_dir = "/tmp/inject_ipv4_based_tcp_rst_after_recv_syn_ack/", // user defined work directory
+
+        // prefix
+        .input_prefix = "pcap/inject_ipv4_based_tcp_rst_after_recv_syn_ack/test/",
+        .output_prefix = "/tmp/",
+
+        // input pcap
+        .input_pcap = "input.pcap",
+
+        // compare
+        .c2s_expect_pcap = "expect-192.0.2.211:59942-192.0.2.110:80-1.pcap",
+        .c2s_output_pcap = "inject-192.0.2.211:59942-192.0.2.110:80-1.pcap",
+
+        .s2c_expect_pcap = "expect-192.0.2.110:80-192.0.2.211:59942-2.pcap",
+        .s2c_output_pcap = "inject-192.0.2.110:80-192.0.2.211:59942-2.pcap",
+
+        // packet injector command
+        .packet_injector_cmd = "./packet_injector -t tcp-rst -c s2c-packet -n 1",
+        .diff_skip_pattern = "-I frame.time -I frame.time_epoch -I ip.id -I ip.ttl -I ip.checksum -I tcp.checksum -I tcp.window_size",
+    };
+
+    packet_injector_test_frame_run(&test);
+}
+
+int main(int argc, char **argv)
+{
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}

test/packet_injector.cpp

@@ -339,12 +339,12 @@ static int parse_cmdline(int argc, char **argv, struct inject_rule *rule)
         printf("invalid count\n");
         return -1;
     }
-    printf("load inject rule:\n");
-    printf("      host        : %s\n", host);
-    printf("      port        : %d\n", ntohs(rule->port));
-    printf("      type        : %s\n", type);
-    printf("      condition   : %s\n", condition);
-    printf("      count       : %lu\n\n", rule->count_num);
+    printf("%s load inject rule:\n", argv[0]);
+    printf("      host      : %s\n", host);
+    printf("      port      : %d\n", ntohs(rule->port));
+    printf("      type      : %s\n", type);
+    printf("      condition : %s\n", condition);
+    printf("      count     : %lu\n\n", rule->count_num);
 
     return 0;
 }
@@ -368,7 +368,6 @@ int main(int argc, char **argv)
         STELLAR_LOG_ERROR("unable to init log");
         goto error_out;
     }
-    STELLAR_LOG_STATE("start stellar (version: %s)\n %s", __stellar_version, logo_str);
 
     if (stellar_load_config(stellar_config_file, config) != 0)
     {
@@ -427,6 +426,11 @@ int main(int argc, char **argv)
             stellar_stat_output(runtime->stat);
         }
         usleep(1000); // 1ms
+
+        if (packet_io_wait_exit(runtime->packet_io))
+        {
+            ATOMIC_SET(&runtime->need_exit, 1);
+        }
     }
 
 error_out:

test/packet_injector_test_frame.cpp

@@ -0,0 +1,205 @@
+#include <gtest/gtest.h>
+
+#include <stdarg.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include "packet_injector_test_frame.h"
+
+static void system_cmd(const char *cmd, ...)
+{
+    char buf[1024] = {0};
+    va_list args;
+
+    va_start(args, cmd);
+    vsnprintf(buf, sizeof(buf), cmd, args);
+    va_end(args);
+
+    system(buf);
+}
+
+static int replace_file_string(const char *file, const char *old_str, const char *new_str)
+{
+#define BUFFER_SIZE 1024
+
+    FILE *in_fp = fopen(file, "r");
+    if (in_fp == NULL)
+    {
+        printf("Open file %s failed, %s\n", file, strerror(errno));
+        return -1;
+    }
+
+    FILE *tmp_fp = tmpfile();
+    if (tmp_fp == NULL)
+    {
+        printf("Create temporary file failed, %s\n", strerror(errno));
+        fclose(in_fp);
+        return -1;
+    }
+
+    size_t old_len = strlen(old_str);
+    size_t new_len = strlen(new_str);
+    char buff[BUFFER_SIZE];
+
+    while (fgets(buff, BUFFER_SIZE, in_fp))
+    {
+        char *pos = buff;
+        if ((pos = strstr(pos, old_str)))
+        {
+            fwrite(buff, 1, pos - buff, tmp_fp); // Write characters before the old_str
+            fwrite(new_str, 1, new_len, tmp_fp); // Write the new_str
+            pos += old_len;                      // Move past the old_str
+            fwrite(pos, 1, strlen(pos), tmp_fp); // Write characters after the old_str
+        }
+        else
+        {
+            fputs(buff, tmp_fp); // Write the remaining part of the line
+        }
+    }
+
+    fclose(in_fp);
+    fseek(tmp_fp, 0, SEEK_SET);
+
+    FILE *out_fp = fopen(file, "w");
+    if (out_fp == NULL)
+    {
+        printf("Open file %s for writing failed, %s\n", file, strerror(errno));
+        fclose(tmp_fp);
+        return -1;
+    }
+
+    while (fgets(buff, BUFFER_SIZE, tmp_fp))
+    {
+        fputs(buff, out_fp); // Write the contents of the temporary file to the original file
+    }
+
+    fclose(tmp_fp);
+    fclose(out_fp);
+
+    return 0;
+}
+
+static void expect_cmp_inject(const char *work_dir,
+                              const char *expect_dir_abs_path, const char *expect_pcap_file,
+                              const char *output_dir_abs_path, const char *output_pcap_file,
+                              const char *diff_skip_pattern, const char *flow_dir)
+{
+    printf("\033[32m ============================================= \033[0m\n");
+    printf("\033[32m Compare [%s] expect pcap and output pcap \033[0m\n", flow_dir);
+    printf("\033[32m ============================================= \033[0m\n");
+
+    struct stat s;
+    char expect_pcap_file_abs_path[1024] = {0};
+    char output_pcap_file_abs_path[1024] = {0};
+    char expect_json_file_abs_path[1024] = {0};
+    char output_json_file_abs_path[1024] = {0};
+    char diff_txt_file_abs_path[1024] = {0};
+
+    // absulute path
+    snprintf(expect_pcap_file_abs_path, sizeof(expect_pcap_file_abs_path), "%s/%s", expect_dir_abs_path, expect_pcap_file);
+    snprintf(output_pcap_file_abs_path, sizeof(output_pcap_file_abs_path), "%s/%s", output_dir_abs_path, output_pcap_file);
+    snprintf(expect_json_file_abs_path, sizeof(expect_json_file_abs_path), "%s/expect_%s.json", work_dir, flow_dir);
+    snprintf(output_json_file_abs_path, sizeof(output_json_file_abs_path), "%s/output_%s.json", work_dir, flow_dir);
+    snprintf(diff_txt_file_abs_path, sizeof(diff_txt_file_abs_path), "%s/diff_%s.txt", work_dir, flow_dir);
+
+    // check pcap file size
+    stat(expect_pcap_file_abs_path, &s);
+    EXPECT_TRUE(s.st_size > 0);
+
+    stat(output_pcap_file_abs_path, &s);
+    EXPECT_TRUE(s.st_size > 0);
+
+    // tcpdump
+    printf("\033[32m tcpdump read [%s] expect pcap (%s) \033[0m\n", flow_dir, expect_pcap_file);
+    system_cmd("tcpdump -r %s", expect_pcap_file_abs_path);
+
+    printf("\033[32m tcpdump read [%s] output pcap (%s) \033[0m\n", flow_dir, output_pcap_file);
+    system_cmd("tcpdump -r %s", output_pcap_file_abs_path);
+
+    // tshark
+    system_cmd("tshark -r %s -T json | jq >> %s", expect_pcap_file_abs_path, expect_json_file_abs_path);
+    system_cmd("tshark -r %s -T json | jq >> %s", output_pcap_file_abs_path, output_json_file_abs_path);
+
+    // check json file size
+    stat(expect_json_file_abs_path, &s);
+    EXPECT_TRUE(s.st_size > 0);
+
+    stat(output_json_file_abs_path, &s);
+    EXPECT_TRUE(s.st_size > 0);
+
+    // diff
+    system_cmd("diff %s %s %s >> %s", diff_skip_pattern, expect_json_file_abs_path, output_json_file_abs_path, diff_txt_file_abs_path);
+
+    // check diff file size
+    stat(diff_txt_file_abs_path, &s);
+    EXPECT_TRUE(s.st_size == 0);
+}
+
+void packet_injector_test_frame_run(struct packet_injector_case *test)
+{
+    printf("\033[32mTest: %s\033[0m\n", test->descriptor);
+
+    char config_file_abs_path[1024] = {0};
+    char input_dir_abs_path[1024] = {0};
+    char output_dir_abs_path[1024] = {0};
+    char expect_dir_abs_path[1024] = {0};
+
+    // absulute path
+    snprintf(config_file_abs_path, sizeof(config_file_abs_path), "%s/conf/stellar.toml", test->work_dir);
+    snprintf(input_dir_abs_path, sizeof(input_dir_abs_path), "%s/input/", test->work_dir);
+    snprintf(output_dir_abs_path, sizeof(output_dir_abs_path), "%s/output/", test->work_dir);
+    snprintf(expect_dir_abs_path, sizeof(expect_dir_abs_path), "%s/expect/", test->work_dir);
+
+    // create directory
+    system_cmd("rm -rf %s", test->work_dir);
+    system_cmd("mkdir -p %s", input_dir_abs_path);
+    system_cmd("mkdir -p %s", output_dir_abs_path);
+    system_cmd("mkdir -p %s", expect_dir_abs_path);
+
+    // copy file to work directory
+    if (test->c2s_expect_pcap)
+    {
+        system_cmd("cp %s/%s %s", test->input_prefix, test->c2s_expect_pcap, expect_dir_abs_path);
+    }
+    if (test->s2c_expect_pcap)
+    {
+        system_cmd("cp %s/%s %s", test->input_prefix, test->s2c_expect_pcap, expect_dir_abs_path);
+    }
+    system_cmd("cp %s/%s %s", test->input_prefix, test->input_pcap, input_dir_abs_path);
+    system_cmd("cp -r conf %s/", test->work_dir);
+    system_cmd("cp packet_injector %s/", test->work_dir);
+
+    // replace config file
+    char temp[2048] = {0};
+    snprintf(temp, sizeof(temp), "dumpfile_dir = \"%s\"", input_dir_abs_path);
+    EXPECT_TRUE(replace_file_string(config_file_abs_path, "mode = marsio", "mode = dumpfile") == 0);
+    EXPECT_TRUE(replace_file_string(config_file_abs_path, "dumpfile_dir = \"/tmp/dumpfile/\"", temp) == 0);
+
+    // run packet injector
+    chdir(test->work_dir);
+    system_cmd(test->packet_injector_cmd);
+    chdir("../");
+
+    // compare pcap
+    if (test->c2s_output_pcap && test->c2s_expect_pcap)
+    {
+        system_cmd("mv %s/%s %s", test->output_prefix, test->c2s_output_pcap, output_dir_abs_path);
+        expect_cmp_inject(test->work_dir,
+                          expect_dir_abs_path, test->c2s_expect_pcap,
+                          output_dir_abs_path, test->c2s_output_pcap,
+                          test->diff_skip_pattern, "C2S");
+    }
+    if (test->s2c_output_pcap && test->s2c_expect_pcap)
+    {
+        system_cmd("mv %s/%s %s", test->output_prefix, test->s2c_output_pcap, output_dir_abs_path);
+        expect_cmp_inject(test->work_dir,
+                          expect_dir_abs_path, test->s2c_expect_pcap,
+                          output_dir_abs_path, test->s2c_output_pcap,
+                          test->diff_skip_pattern, "S2C");
+    }
+
+    // clean work directory
+    if (test->finish_clean_work_dir)
+    {
+        system_cmd("rm -rf %s", test->work_dir);
+    }
+}

test/packet_injector_test_frame.h

@@ -0,0 +1,41 @@
+#ifndef _PACKET_INJECTOR_TEST_FRAME_H
+#define _PACKET_INJECTOR_TEST_FRAME_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+struct packet_injector_case
+{
+    // descriptor
+    int finish_clean_work_dir;
+    const char *descriptor;
+    const char *work_dir;
+
+    // prefix
+    const char *input_prefix;
+    const char *output_prefix;
+
+    // input pcap
+    const char *input_pcap;
+
+    // compare
+    const char *c2s_expect_pcap;
+    const char *c2s_output_pcap;
+
+    const char *s2c_expect_pcap;
+    const char *s2c_output_pcap;
+
+    // packet injector command
+    const char *packet_injector_cmd;
+    const char *diff_skip_pattern;
+};
+
+void packet_injector_test_frame_run(struct packet_injector_case *test);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif