wireshark集成Backward-cpp编译
原文地址:https://www.cnblogs.com/liqinglucky/p/backward-in-wireshark.html
在之前的文章中已经介绍过ubuntu系统wireshark源码编译与安装和Backward-cpp: Segmentation fault时打印backtrace。现在对wireshark的CMakeLists.txt中添加backward-cpp编译。测试wireshark程序中打印backtrace。
一 添加Backward-cpp
改动很简单,只需在wireshark的CMakeLists.txt中添加backward-cpp编译。见C程序集成Backward-cpp使用示例。
CMakeLists.txt
的修改
include(FetchContent)
FetchContent_Declare(backward GIT_REPOSITORY https://github.com/bombela/backward-cpp GIT_TAG v1.6)
FetchContent_MakeAvailable(backward)
add_executable(wireshark WIN32 MACOSX_BUNDLE ${wireshark_FILES} ${EXTRA_BUNDLE_FILES} ${BACKWARD_ENABLE})
add_backward(${PROJECT_NAME})
git diff如下
wireshark-4.0.2# ls
CMakeLists.txt
wireshark-4.0.2# git diff
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 092dc7b..f368142 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2598,8 +2599,16 @@ if(BUILD_wireshark AND QT_FOUND)
${SPEEXDSP_LIBRARIES}
${MINIZIP_LIBRARIES}
)
+include(FetchContent)
+
+FetchContent_Declare(backward
+ GIT_REPOSITORY https://github.com/bombela/backward-cpp
+ GIT_TAG v1.6)
+FetchContent_MakeAvailable(backward)
- add_executable(wireshark WIN32 MACOSX_BUNDLE ${wireshark_FILES} ${EXTRA_BUNDLE_FILES})
+ add_executable(wireshark WIN32 MACOSX_BUNDLE ${wireshark_FILES} ${EXTRA_BUNDLE_FILES} ${BACKWARD_ENABLE})
+ add_backward(${PROJECT_NAME})
+ message("project name:" ${PROJECT_NAME})
为了方便测试,在代码中故意访问空指针使程序产生crash。
epan/proto.c
的修改
static void
proto_cleanup_base(void)
{
protocol_t *protocol=NULL;
header_field_info *hfinfo;
printf("%s %u\n", __FUNCTION__, protocol->proto_id); //访问空指针
接下来编译看使用效果。wireshark编译需要10分钟左右。
二 运行测试
在wireshark源代码中加了测试代码后,直接启动wireshark就可以看到效果。
测试如下:
wireshark-4.0.2/build# run/wireshark
Stack trace (most recent call last):
#6 Object "", at 0xffffffffffffffff, in
#5 Object "/wireshark-4.0.2/build/run/wireshark", at 0x5575765bb3ad, in _start
#4 Source "../csu/libc-start.c", line 308, in __libc_start_main [0x7fe2bee83082]
#3 Source "/wireshark-4.0.2/ui/qt/main.cpp", line 738, in main [0x5575765b7e6c]
735: "-G" flag, as the "-G" flag dumps information registered by the
736: dissectors, and we must do it before we read the preferences, in
737: case any dissectors register preferences. */
> 738: if (!epan_init(splash_update, NULL, TRUE)) {
739: SimpleDialog::displayQueuedMessages(main_w);
740: ret_val = INIT_FAILED;
741: goto clean_exit;
#2 Source "/wireshark-4.0.2/epan/epan.c", line 315, in epan_init [0x7fe2c2d8e2ba]
312: reassembly_tables_init();
313: conversation_filters_init();
314: g_slist_foreach(epan_plugins, epan_plugin_init, NULL);
> 315: proto_init(epan_plugin_register_all_procotols, epan_plugin_register_all_handoffs, cb, client_data);
316: g_slist_foreach(epan_plugins, epan_plugin_register_all_tap_listeners, NULL);
317: packet_cache_proto_handles();
318: dfilter_init();
#1 Source "/wireshark-4.0.2/epan/proto.c", line 543, in proto_init [0x7fe2c2dc8898]
540: register_cb cb,
541: gpointer client_data)
542: {
> 543: proto_cleanup_base();
544:
545: proto_names = g_hash_table_new(g_str_hash, g_str_equal);
546: proto_short_names = g_hash_table_new(g_str_hash, g_str_equal);
#0 Source "/wireshark-4.0.2/epan/proto.c", line 630, in proto_cleanup_base [0x7fe2c2dae200]
627: {
628: protocol_t *protocol=NULL;
629: header_field_info *hfinfo;
> 630: printf("%s %u\n", __FUNCTION__, protocol->proto_id);
631:
632: /* Free the abbrev/ID hash table */
633: if (gpa_name_map) {
Segmentation fault (Address not mapped to object [0x20])
Segmentation fault
Segmentation fault
打印出的backtrace已经带了代码段与行号这些详细信息。集成backward-cpp成功!