tests: Cleanup OpenSSL in tests when GSSAPI is built

also from the fuzzer tests

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>

tests/CMakeLists.txt

@@ -23,6 +23,11 @@ if (NOT WIN32)
         ${TORTURE_LINK_LIBRARIES}
         pthread)
 endif(NOT WIN32)
+if (WITH_GSSAPI AND GSSAPI_FOUND)
+    set(TORTURE_LINK_LIBRARIES
+        ${TORTURE_LINK_LIBRARIES}
+        crypto)
+endif (WITH_GSSAPI AND GSSAPI_FOUND)
 
 # create test library
 add_library(${TORTURE_LIBRARY}

tests/fuzz/CMakeLists.txt

@@ -2,9 +2,7 @@ project(fuzzing CXX)
 
 macro(fuzzer name)
     add_executable(${name} ${name}.c)
-    target_link_libraries(${name}
-                          PRIVATE
-                              ssh::static pthread)
+    target_link_libraries(${name} PRIVATE ${TORTURE_LINK_LIBRARIES})
     if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
         set_target_properties(${name}
                               PROPERTIES

tests/fuzz/fuzzer.c

@@ -1,8 +1,14 @@
 /* Simpler gnu89 version of StandaloneFuzzTargetMain.c from LLVM */
 
+#include "config.h"
+
 #include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
+#if defined(HAVE_LIBCRYPTO) || defined(WITH_GSSAPI)
+/* for OPENSSL_cleanup() of GSSAPI's OpenSSL context */
+#include <openssl/crypto.h>
+#endif
 
 int LLVMFuzzerTestOneInput (const unsigned char *data, size_t size);
 __attribute__((weak)) int LLVMFuzzerInitialize(int *argc, char ***argv);
@@ -35,5 +41,9 @@ main (int argc, char **argv)
 
     free (buf);
     printf ("Done!\n");
+
+#if defined(HAVE_LIBCRYPTO) || defined(WITH_GSSAPI)
+    OPENSSL_cleanup();
+#endif
     return 0;
 }

tests/torture.c

@@ -53,6 +53,11 @@
 #include <valgrind/valgrind.h>
 #endif
 
+#ifdef WITH_GSSAPI
+/* for OPENSSL_cleanup() of GSSAPI's OpenSSL context */
+#include <openssl/crypto.h>
+#endif
+
 #define TORTURE_SSHD_SRV_IPV4 "127.0.0.10"
 #define TORTURE_SSHD_SRV1_IPV4 "127.0.0.11"
 /* socket wrapper IPv6 prefix  fd00::5357:5fxx */
@@ -1977,18 +1982,21 @@ __attribute__((weak)) int torture_run_tests(void)
 #endif /* defined(HAVE_WEAK_ATTRIBUTE) && defined(TORTURE_SHARED) */
 
 /**
- * Finalize the torture context. No-op except for OpenSSL.
+ * Finalize the torture context. No-op except for OpenSSL or GSSAPI
  *
  * When OpenSSL is built without the at-exit handlers, it won't call the
  * OPENSSL_cleanup() from destructor or at-exit handler, which means we need to
  * do it manually in the tests.
  *
  * It is never a good idea to call this function from the library context as we
- * can not be sure the libssh is really the last one using the OpenSSL
+ * can not be sure the libssh is really the last one using the OpenSSL.
+ *
+ * This needs to be called at the end of the main function or any time before
+ * any forked process (servers) exits.
  */
-static void torture_finalize(void)
+void torture_finalize(void)
 {
-#ifdef HAVE_LIBCRYPTO
+#if defined(HAVE_LIBCRYPTO) || defined(WITH_GSSAPI)
     OPENSSL_cleanup();
 #endif
 }

tests/torture.h

@@ -194,4 +194,6 @@ void torture_unsetenv(char const *variable);
 int torture_setup_ssh_agent(struct torture_state *s, const char *add_key);
 int torture_cleanup_ssh_agent(void);
 
+void torture_finalize(void);
+
 #endif /* _TORTURE_H */