Compile breakpad_client with -Wno-array-bounds

FileLogger: don't open/close file for each write

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "fmt"]
 	path = fmt
 	url = https://github.com/fmtlib/fmt
+[submodule "sentry"]
+	path = sentry
+	url = git@github.com:getsentry/sentry-native.git

CMakeLists.txt

@@ -15,7 +15,38 @@ add_library(logvisor
             lib/logvisor.cpp
             include/logvisor/logvisor.hpp)
 
-target_link_libraries(logvisor PUBLIC fmt)
+if ("${SENTRY_DSN}" STREQUAL "")
+  message(STATUS "SENTRY_DSN not set, not enabling Sentry")
+  target_compile_definitions(logvisor PUBLIC SENTRY_ENABLED=0)
+  set(SENTRY_LIB "")
+  set(BREAKPAD_CLIENT "")
+else ()
+  message(STATUS "Enabling Sentry integration")
+  add_subdirectory(sentry)
+  target_compile_definitions(logvisor PUBLIC SENTRY_ENABLED=1)
+  target_compile_definitions(logvisor PRIVATE SENTRY_DSN="${SENTRY_DSN}")
+  set(SENTRY_LIB sentry)
+  if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
+    set(BREAKPAD_CLIENT breakpad_client)
+    target_compile_options(breakpad_client PRIVATE -Wno-implicit-fallthrough -Wno-array-bounds)
+    target_compile_options(sentry PRIVATE "-Wno-implicit-fallthrough")
+    set_property(TARGET breakpad_client PROPERTY CXX_STANDARD 17)
+    set_property(TARGET sentry PROPERTY CXX_STANDARD 17)
+  else ()
+    set(BREAKPAD_CLIENT "")
+  endif ()
+  if (MSVC)
+    target_compile_options(crashpad_client PRIVATE "/W0")
+    target_compile_options(crashpad_util PRIVATE "/W0")
+    target_compile_options(crashpad_snapshot PRIVATE "/W0")
+    target_compile_options(mini_chromium PRIVATE "/W0")
+    if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
+      target_compile_options(crashpad_zlib PRIVATE "-mpclmul")
+    endif ()
+  endif ()
+endif ()
+
+target_link_libraries(logvisor PUBLIC fmt ${SENTRY_LIB})
 if(NX)
   target_link_libraries(logvisor PUBLIC debug nxd optimized nx)
 else()
@@ -33,7 +64,7 @@ set(config_install_dir "lib/cmake/logvisor")
 
 # Associate target with export
 install(
-    TARGETS logvisor fmt
+    TARGETS logvisor fmt ${SENTRY_LIB} ${BREAKPAD_CLIENT}
     EXPORT logvisorTargets
     ARCHIVE DESTINATION "lib"
     INCLUDES DESTINATION include  # This sets the INTERFACE_INCLUDE_DIRECTORIES property of the target.

include/logvisor/logvisor.hpp

@@ -17,6 +17,7 @@
 #endif
 
 extern "C" void logvisorBp();
+#define log_typeid(type) std::hash<std::string>()(#type)
 
 namespace logvisor {
 
@@ -43,6 +44,10 @@ enum Level {
  * @brief Backend interface for receiving app-wide log events
  */
 struct ILogger {
+private:
+  uint64_t m_typeHash;
+public:
+  ILogger(uint64_t typeHash) : m_typeHash(typeHash) {}
   virtual ~ILogger() = default;
   virtual void report(const char* modName, Level severity, fmt::string_view format, fmt::format_args args) = 0;
   virtual void report(const char* modName, Level severity, fmt::wstring_view format, fmt::wformat_args args) = 0;
@@ -50,6 +55,8 @@ struct ILogger {
                             fmt::string_view format, fmt::format_args args) = 0;
   virtual void reportSource(const char* modName, Level severity, const char* file, unsigned linenum,
                             fmt::wstring_view format, fmt::wformat_args args) = 0;
+
+  [[nodiscard]] uint64_t  getTypeId() const { return m_typeHash; }
 };
 
 /**
@@ -146,6 +153,16 @@ void RegisterFileLogger(const char* filepath);
  */
 void RegisterStandardExceptions();
 
+#if SENTRY_ENABLED
+/**
+ * @brief Register Sentry crash reporting & logging.
+ * @param appName The application name
+ * @param appVersion The application version
+ * @param cacheDir Directory for Sentry cache files
+ */
+void RegisterSentry(const char* appName, const char* appVersion, const char* cacheDir);
+#endif
+
 #if _WIN32
 /**
  * @brief Spawn an application-owned cmd.exe window for displaying console output

lib/logvisor.cpp

@@ -34,6 +34,10 @@
 #include <csignal>
 #include "logvisor/logvisor.hpp"
 
+#if SENTRY_ENABLED
+#include <sentry.h>
+#endif
+
 /* ANSI sequences */
 #define RED "\x1b[1;31m"
 #define YELLOW "\x1b[1;33m"
@@ -536,7 +540,7 @@ static const char* Term = nullptr;
 #endif
 bool XtermColor = false;
 struct ConsoleLogger : public ILogger {
-  ConsoleLogger() {
+  ConsoleLogger() : ILogger(log_typeid(ConsoleLogger)) {
 #if _WIN32
 #if !WINDOWS_STORE
     const char* conemuANSI = getenv("ConEmuANSI");
@@ -555,6 +559,7 @@ struct ConsoleLogger : public ILogger {
     }
 #endif
   }
+  ~ConsoleLogger() override = default;
 
   static void _reportHead(const char* modName, const char* sourceInfo, Level severity) {
     /* Clear current line out */
@@ -736,10 +741,43 @@ void RegisterStandardExceptions() {
   signal(SIGFPE, AbortHandler);
 }
 
+#if SENTRY_ENABLED
+void RegisterSentry(const char* appName, const char* appVersion, const char* cacheDir) {
+  sentry_options_t *options = sentry_options_new();
+  sentry_options_set_database_path(options, cacheDir);
+  sentry_options_set_auto_session_tracking(options, true);
+  sentry_options_set_symbolize_stacktraces(options, true);
+  sentry_options_set_dsn(options, SENTRY_DSN);
+
+#ifdef NDEBUG
+  sentry_options_set_environment(options, "release");
+#else
+  sentry_options_set_environment(options, "debug");
+#endif
+
+  std::string release = fmt::format(FMT_STRING("{}@{}"), appName, appVersion);
+  sentry_options_set_release(options, release.c_str());
+
+  sentry_init(options);
+}
+#endif
+
 struct FileLogger : public ILogger {
-  FILE* fp;
+  FILE* fp = nullptr;
+  FileLogger(uint64_t typeHash) : ILogger(typeHash) {}
   virtual void openFile() = 0;
-  virtual void closeFile() { std::fclose(fp); }
+  void openFileIfNeeded() {
+    if (!fp) {
+      openFile();
+    }
+  }
+  virtual void closeFile() { 
+    if (fp) {
+      std::fclose(fp);
+      fp = nullptr;
+    }
+  }
+  virtual ~FileLogger() { closeFile(); }
 
   void _reportHead(const char* modName, const char* sourceInfo, Level severity) {
     const std::chrono::steady_clock::duration tm = CurrentUptime();
@@ -784,44 +822,41 @@ struct FileLogger : public ILogger {
   }
 
   void report(const char* modName, Level severity, fmt::string_view format, fmt::format_args args) override {
-    openFile();
+    openFileIfNeeded();
     _reportHead(modName, nullptr, severity);
     fmt::vprint(fp, format, args);
     std::fputc('\n', fp);
-    closeFile();
   }
 
   void report(const char* modName, Level severity, fmt::wstring_view format, fmt::wformat_args args) override {
-    openFile();
+    openFileIfNeeded();
     _reportHead(modName, nullptr, severity);
     fmt::vprint(fp, format, args);
     std::fputc('\n', fp);
-    closeFile();
   }
 
   void reportSource(const char* modName, Level severity, const char* file, unsigned linenum, fmt::string_view format,
                     fmt::format_args args) override {
-    openFile();
+    openFileIfNeeded();
     _reportHead(modName, fmt::format(FMT_STRING("{}:{}"), file, linenum).c_str(), severity);
     fmt::vprint(fp, format, args);
     std::fputc('\n', fp);
-    closeFile();
   }
 
   void reportSource(const char* modName, Level severity, const char* file, unsigned linenum, fmt::wstring_view format,
                     fmt::wformat_args args) override {
-    openFile();
+    openFileIfNeeded();
     _reportHead(modName, fmt::format(FMT_STRING("{}:{}"), file, linenum).c_str(), severity);
     fmt::vprint(fp, format, args);
     std::fputc('\n', fp);
-    closeFile();
   }
 };
 
 struct FileLogger8 : public FileLogger {
   const char* m_filepath;
-  FileLogger8(const char* filepath) : m_filepath(filepath) {}
+  FileLogger8(const char* filepath) : FileLogger(log_typeid(FileLogger8)), m_filepath(filepath) {}
   void openFile() override { fp = std::fopen(m_filepath, "a"); }
+  ~FileLogger8() override = default;
 };
 
 void RegisterFileLogger(const char* filepath) {
@@ -833,17 +868,19 @@ void RegisterFileLogger(const char* filepath) {
 
 struct FileLogger16 : public FileLogger {
   const wchar_t* m_filepath;
-  FileLogger16(const wchar_t* filepath) : m_filepath(filepath) {}
+  FileLogger16(const wchar_t* filepath) : FileLogger(log_typeid(FileLogger16)), m_filepath(filepath) {}
   void openFile() override { fp = _wfopen(m_filepath, L"a"); }
+  ~FileLogger16() override = default;
 };
 
 void RegisterFileLogger(const wchar_t* filepath) {
   /* Determine if file logger already added */
-  for (auto& logger : MainLoggers) {
-    FileLogger16* filelogger = dynamic_cast<FileLogger16*>(logger.get());
-    if (filelogger) {
-      if (!wcscmp(filepath, filelogger->m_filepath))
+  for (const auto& logger : MainLoggers) {
+    if (logger->getTypeId() == log_typeid(FileLogger16)) {
+      const auto* fl = static_cast<const FileLogger16*>(logger.get());
+      if (!wcscmp(filepath, fl->m_filepath)) {
         return;
+      }
     }
   }