Merge bitcoin#15335: Fix lack of warning of unrecognized section names

1a7ba84 Fix lack of warning of unrecognized section names (Akio Nakamura)

Pull request description:

  In bitcoin#14708, It was introduced that to warn when unrecognized section names are exist in the config file.
  But ```m_config_sections.clear()```  in ```ArgsManager::ReadConfigStream()``` is called every time when reading each configuration file, so it can warn about only last reading file if ```includeconf``` exists.

  This PR fix lack of warning by collecting all section names by moving ```m_config_sections.clear()```  to ```ArgsManager::ReadConfigFiles()``` .
  Also add a test code to confirm this situation.

Tree-SHA512: 26aa0cbe3e4ae2e58cbe73d4492ee5cf465fd4c3e5df2c8ca7e282b627df9e637267af1e3816386b1dc6db2398b31936925ce0e432219fec3a9b3398f01e3e65

src/test/util_tests.cpp

@@ -132,9 +132,10 @@ struct TestArgsManager : public ArgsManager
         {
             LOCK(cs_args);
             m_config_args.clear();
+            m_config_sections.clear();
         }
         std::string error;
-        BOOST_REQUIRE(ReadConfigStream(streamConfig, error));
+        BOOST_REQUIRE(ReadConfigStream(streamConfig, "", error));
     }
     void SetNetworkOnlyArg(const std::string arg)
     {

src/util/system.cpp

@@ -927,11 +927,11 @@ static bool GetConfigOptions(std::istream& stream, std::string& error, std::vect
     return true;
 }
 
-bool ArgsManager::ReadConfigStream(std::istream& stream, std::string& error, bool ignore_invalid_keys)
+bool ArgsManager::ReadConfigStream(std::istream& stream, const std::string& filepath, std::string& error, bool ignore_invalid_keys)
 {
     LOCK(cs_args);
     std::vector<std::pair<std::string, std::string>> options;
-    if (!GetConfigOptions(stream, error, options)) {
+    if (!GetConfigOptions(stream, filepath, error, options)) {
         return false;
     }
     for (const std::pair<std::string, std::string>& option : options) {
@@ -962,13 +962,14 @@ bool ArgsManager::ReadConfigFiles(std::string& error, bool ignore_invalid_keys)
     {
         LOCK(cs_args);
         m_config_args.clear();
+        m_config_sections.clear();
     }
 
     const std::string confPath = GetArg("-conf", BITCOIN_CONF_FILENAME);
     fsbridge::ifstream stream(GetConfigFile(confPath));
 
     if (stream.good()) {
-        if (!ReadConfigStream(stream, error, ignore_invalid_keys)) {
+        if (!ReadConfigStream(stream, confPath, error, ignore_invalid_keys)) {
             return false;
         }
         // if there is an -includeconf in the override args, but it is empty, that means the user
@@ -999,7 +1000,7 @@ bool ArgsManager::ReadConfigFiles(std::string& error, bool ignore_invalid_keys)
             for (const std::string& to_include : includeconf) {
                 fsbridge::ifstream include_config(GetConfigFile(to_include));
                 if (include_config.good()) {
-                    if (!ReadConfigStream(include_config, error, ignore_invalid_keys)) {
+                    if (!ReadConfigStream(include_config, to_include, error, ignore_invalid_keys)) {
                         return false;
                     }
                     LogPrintf("Included configuration file %s\n", to_include.c_str());

src/util/system.h

@@ -157,6 +157,13 @@ enum class OptionsCategory {
     HIDDEN // Always the last option to avoid printing these in the help
 };
 
+struct SectionInfo
+{
+    std::string m_name;
+    std::string m_file;
+    int m_line;
+};
+
 class ArgsManager
 {
 protected:
@@ -178,7 +185,7 @@ class ArgsManager
     std::set<std::string> m_network_only_args GUARDED_BY(cs_args);
     std::map<OptionsCategory, std::map<std::string, Arg>> m_available_args GUARDED_BY(cs_args);
 
-    [[nodiscard]] bool ReadConfigStream(std::istream& stream, std::string& error, bool ignore_invalid_keys = false);
+    [[nodiscard]] bool ReadConfigStream(std::istream& stream, const std::string& filepath, std::string& error, bool ignore_invalid_keys = false);
 
 public:
     ArgsManager();

test/functional/feature_config_args.py

@@ -45,6 +45,8 @@ def test_config_file_parser(self):
 
         with open(inc_conf_file_path, 'w', encoding='utf-8') as conf:
             conf.write('')  # clear
+        with open(inc_conf_file2_path, 'w', encoding='utf-8') as conf:
+            conf.write('')  # clear
 
 
     def test_log_buffer(self):