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-rw-r--r--crypto/cryptlib.c26
1 files changed, 21 insertions, 5 deletions
diff --git a/crypto/cryptlib.c b/crypto/cryptlib.c
index ca0e3ccc0c7a..c9f674ba8e62 100644
--- a/crypto/cryptlib.c
+++ b/crypto/cryptlib.c
@@ -953,13 +953,29 @@ void OPENSSL_showfatal(const char *fmta, ...)
# if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
/* this -------------v--- guards NT-specific calls */
if (check_winnt() && OPENSSL_isservice() > 0) {
- HANDLE h = RegisterEventSource(0, _T("OPENSSL"));
- const TCHAR *pmsg = buf;
- ReportEvent(h, EVENTLOG_ERROR_TYPE, 0, 0, 0, 1, 0, &pmsg, 0);
- DeregisterEventSource(h);
+ HANDLE hEventLog = RegisterEventSource(NULL, _T("OpenSSL"));
+
+ if (hEventLog != NULL) {
+ const TCHAR *pmsg = buf;
+
+ if (!ReportEvent(hEventLog, EVENTLOG_ERROR_TYPE, 0, 0, NULL,
+ 1, 0, &pmsg, NULL)) {
+#if defined(DEBUG)
+ /*
+ * We are in a situation where we tried to report a critical
+ * error and this failed for some reason. As a last resort,
+ * in debug builds, send output to the debugger or any other
+ * tool like DebugView which can monitor the output.
+ */
+ OutputDebugString(pmsg);
+#endif
+ }
+
+ (void)DeregisterEventSource(hEventLog);
+ }
} else
# endif
- MessageBox(NULL, buf, _T("OpenSSL: FATAL"), MB_OK | MB_ICONSTOP);
+ MessageBox(NULL, buf, _T("OpenSSL: FATAL"), MB_OK | MB_ICONERROR);
}
#else
void OPENSSL_showfatal(const char *fmta, ...)