Merge remote-tracking branch 'origin/topic/awelzel/event-trace-mgr-destructor-fclose'

* origin/topic/awelzel/event-trace-mgr-destructor-fclose:
  btest/core: Add event-trace test
  zeek-setup: Free event_trace_mgr after generating trace
  EventTraceMgr: Rename etm to event_trace_mgr
  EventTraceMgr: Move fclose() to destructor

CHANGES

@@ -1,3 +1,15 @@
+8.0.0-dev.136 | 2025-05-19 20:01:30 +0200
+
+  * btest/core: Add event-trace test (Arne Welzel, Corelight)
+
+  * zeek-setup: Free event_trace_mgr after generating trace (Arne Welzel, Corelight)
+
+  * EventTraceMgr: Rename etm to event_trace_mgr (Arne Welzel, Corelight)
+
+  * EventTraceMgr: Move fclose() to destructor (Arne Welzel, Corelight)
+
+  * Update cmake submodule (Tim Wojtulewicz, Corelight)
+
 8.0.0-dev.130 | 2025-05-19 10:25:34 -0700
 
   * Remove unnecessary #includes across the repo (Tim Wojtulewicz, Corelight)

VERSION

@@ -1 +1 @@
-8.0.0-dev.130
+8.0.0-dev.136

src/EventTrace.cc

@@ -13,7 +13,7 @@
 
 namespace zeek::detail {
 
-std::unique_ptr<EventTraceMgr> etm;
+std::unique_ptr<EventTraceMgr> event_trace_mgr;
 
 // Helper function for generating a correct script-level representation
 // of a string constant.
@@ -955,7 +955,17 @@ bool ValTraceMgr::IsUnsupported(const Val* v) const {
 EventTraceMgr::EventTraceMgr(const std::string& trace_file) {
     f = fopen(trace_file.c_str(), "w");
     if ( ! f )
-        reporter->FatalError("can't open event trace file %s", trace_file.c_str());
+        reporter->FatalError("can't open event trace file %s: %s", trace_file.c_str(), strerror(errno));
+}
+
+EventTraceMgr::~EventTraceMgr() {
+    if ( f ) {
+        if ( fclose(f) )
+            // Not fatal, won't do anything with it anymore anyhow.
+            reporter->Error("failed to close event trace file: %s", strerror(errno));
+
+        f = nullptr;
+    }
 }
 
 void EventTraceMgr::Generate() {
@@ -999,8 +1009,6 @@ void EventTraceMgr::Generate() {
         for ( auto& c : c_t )
             fprintf(f, "#\t%s\n", c.c_str());
     }
-
-    fclose(f);
 }
 
 void EventTraceMgr::StartEvent(const ScriptFunc* ev, const zeek::Args* args) {

src/EventTrace.h

@@ -441,6 +441,8 @@ class EventTraceMgr {
 public:
     EventTraceMgr(const std::string& trace_file);
 
+    ~EventTraceMgr();
+
     // Generates the trace upon exit.
     void Generate();
 
@@ -465,6 +467,6 @@ private:
 };
 
 // If non-nil then we're doing event tracing.
-extern std::unique_ptr<EventTraceMgr> etm;
+extern std::unique_ptr<EventTraceMgr> event_trace_mgr;
 
 } // namespace zeek::detail

src/Expr.cc

@@ -3865,8 +3865,8 @@ ValPtr ScheduleExpr::Eval(Frame* f) const {
     if ( args ) {
         auto handler = event->Handler();
 
-        if ( etm )
-            etm->ScriptEventQueued(handler);
+        if ( event_trace_mgr )
+            event_trace_mgr->ScriptEventQueued(handler);
 
         timer_mgr->Add(new ScheduleTimer(handler, std::move(*args), dt));
     }
@@ -4471,8 +4471,8 @@ ValPtr EventExpr::Eval(Frame* f) const {
     auto v = eval_list(f, args.get());
 
     if ( handler ) {
-        if ( etm )
-            etm->ScriptEventQueued(handler);
+        if ( event_trace_mgr )
+            event_trace_mgr->ScriptEventQueued(handler);
 
         event_mgr.Enqueue(handler, std::move(*v));
     }

src/Func.cc

@@ -355,8 +355,8 @@ ValPtr ScriptFunc::Invoke(zeek::Args* args, Frame* parent) const {
         return nullptr;
     }
 
-    if ( etm && Flavor() == FUNC_FLAVOR_EVENT )
-        etm->StartEvent(this, args);
+    if ( event_trace_mgr && Flavor() == FUNC_FLAVOR_EVENT )
+        event_trace_mgr->StartEvent(this, args);
 
     if ( g_trace_state.DoTrace() ) {
         ODesc d;
@@ -433,8 +433,8 @@ ValPtr ScriptFunc::Invoke(zeek::Args* args, Frame* parent) const {
             result = val_mgr->True();
     }
 
-    else if ( etm && Flavor() == FUNC_FLAVOR_EVENT )
-        etm->EndEvent(this, args);
+    else if ( event_trace_mgr && Flavor() == FUNC_FLAVOR_EVENT )
+        event_trace_mgr->EndEvent(this, args);
 
     // Warn if the function returns something, but we returned from
     // the function without an explicit return, or without a value.

src/Stmt.cc

@@ -902,8 +902,8 @@ ValPtr EventStmt::Exec(Frame* f, StmtFlowType& flow) {
     auto h = event_expr->Handler();
 
     if ( args && h ) {
-        if ( etm )
-            etm->ScriptEventQueued(h);
+        if ( event_trace_mgr )
+            event_trace_mgr->ScriptEventQueued(h);
 
         event_mgr.Enqueue(h, std::move(*args));
     }

src/zeek-setup.cc

@@ -401,8 +401,10 @@ static void terminate_zeek() {
 
     script_coverage_mgr.WriteStats();
 
-    if ( etm )
-        etm->Generate();
+    if ( event_trace_mgr ) {
+        event_trace_mgr->Generate();
+        event_trace_mgr.reset();
+    }
 
     delete zeekygen_mgr;
     delete packet_mgr;
@@ -775,7 +777,7 @@ SetupResult setup(int argc, char** argv, Options* zopts) {
         auto ipbb = make_intrusive<BuiltinFunc>(init_bifs, ipbid->Name(), false);
 
         if ( options.event_trace_file )
-            etm = std::make_unique<EventTraceMgr>(*options.event_trace_file);
+            event_trace_mgr = std::make_unique<EventTraceMgr>(*options.event_trace_file);
 
         // Parsing involves reading input files, including any input
         // interactively provided by the user at the console. Temporarily

testing/btest/Baseline/core.event-trace/.stderr

@@ -0,0 +1 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.

testing/btest/core/event-trace.zeek

@@ -0,0 +1,21 @@
+# @TEST-DOC: Verify the --event-trace feature works and produces the same logs as when reading from a pcap.
+#
+# Trace files produced with ZAM don't work - issue #4478
+#
+# @TEST-REQUIRES: test "${ZEEK_ZAM}" != "1"
+#
+# @TEST-EXEC: zeek --event-trace trace.zeek -b -r $TRACES/http/get.trace %INPUT
+# @TEST-EXEC: mkdir pcap-logs
+# @TEST-EXEC: zeek-cut -m < http.log > pcap-logs/http.log
+# @TEST-EXEC: rm -v *.log
+#
+# @TEST-EXEC: zeek -b --parse-only %INPUT trace.zeek
+# @TEST-EXEC: zeek -b %INPUT trace.zeek
+# @TEST-EXEC: mkdir trace-logs
+# @TEST-EXEC: zeek-cut -m < http.log > trace-logs/http.log
+# @TEST-EXEC: rm -v *.log
+#
+# @TEST-EXEC: diff pcap-logs/http.log trace-logs/http.log
+# @TEST-EXEC: btest-diff .stderr
+
+@load base/protocols/http