add openssl 1.1 support

changes:
  - CRYPTO_lock detection replaced in configure.ac. We don't use that
    function anywhere, so just replace it with the suggested one from
    https://wiki.openssl.org/index.php/Library_Initialization#Autoconf
  - OPENSSL_NO_SSL2 is no longer defined while ssl2 is not included.
    Set it ourself using the suggested openssl 1.1 version check from
    https://wiki.openssl.org/index.php/1.1_API_Changes#Backward_compatibility
  - openssl 1.1 sends a sigpipe if the connection is still open when
    calling SSL_shutdown(), so move the close before the shutdown.

Signed-off-by: Sven Nierlein <sven@nierlein.de>

1 files changed, 3 insertions, 3 deletions

diff --git a/configure.ac b/configure.ac
index 0a554af6..5ef56f75 100644
--- a/configure.ac
+++ b/configure.ac
@@ -493,15 +493,15 @@ if ! test x"$with_openssl" = x"no"; then
         dnl Check for crypto lib
         _SAVEDLIBS="$LIBS"
         LIBS="-L${with_openssl}/lib"
-        AC_CHECK_LIB(crypto,CRYPTO_lock)
-        if test "$ac_cv_lib_crypto_CRYPTO_lock" = "yes"; then
+        AC_CHECK_LIB(crypto,CRYPTO_new_ex_data)
+        if test "$ac_cv_lib_crypto_CRYPTO_new_ex_data" = "yes"; then
                 dnl Check for SSL lib
                 AC_CHECK_LIB(ssl,main, SSLLIBS="-lssl -lcrypto",,-lcrypto)
         fi
         LIBS="$_SAVEDLIBS"
 
         dnl test headers and libs to decide whether check_http should use SSL
-        if test "$ac_cv_lib_crypto_CRYPTO_lock" = "yes"; then
+        if test "$ac_cv_lib_crypto_CRYPTO_new_ex_data" = "yes"; then
                 if test "$ac_cv_lib_ssl_main" = "yes"; then
                         if test "$FOUNDINCLUDE" = "yes"; then
                                 FOUNDOPENSSL="yes"