crypto_compat_free(): handle recent OpenSSL and LibreSSL

Tarsnap · Oct 15, 2023 · 8bea62a · 8bea62a
1 parent 2fd649a
commit 8bea62a
Showing 1 changed file with 13 additions and 2 deletions.
diff --git a/lib/crypto/crypto_compat.c b/lib/crypto/crypto_compat.c
@@ -255,13 +255,23 @@ void
 crypto_compat_free(void)
 {
 
+#if !defined(LIBRESSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER > 0x1010000fL
+	/* OpenSSL 1.1.0 and higher: do nothing; the library uses atexit(). */
+#elif defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER > 0x3070100fL
+	/* LibreSSL 3.7.1 and higher. */
+	OPENSSL_cleanup();
+#elif defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER > 0x3060000fL
+	/* LibreSSL 3.6.0 to 3.7.0. */
+	OPENSSL_cleanup();
+	CRYPTO_cleanup_all_ex_data();
+#else
+	/* Easerlier versions of OpenSSL and LibreSSL. */
+
 	/* Free OpenSSL error queue. */
 #if OPENSSL_VERSION_NUMBER < 0x10000000L
 	ERR_remove_state(0);
 #elif OPENSSL_VERSION_NUMBER < 0x10100000L
 	ERR_remove_thread_state(NULL);
-#else
-	/* Nothing needed for OpenSSL >= 1.1. */
 #endif
 
 	/* Free OpenSSL error strings. */
@@ -274,4 +284,5 @@ crypto_compat_free(void)
 
 	/* A more general OpenSSL cleanup function. */
 	CRYPTO_cleanup_all_ex_data();
+#endif
 }