1 files changed, 22 insertions, 0 deletions

diff --git a/src/lib/libssl/ssl_sess.c b/src/lib/libssl/ssl_sess.c
index ee88be2b88..8391d62212 100644
--- a/src/lib/libssl/ssl_sess.c
+++ b/src/lib/libssl/ssl_sess.c
@@ -59,6 +59,9 @@
 #include <stdio.h>
 #include <openssl/lhash.h>
 #include <openssl/rand.h>
+#ifndef OPENSSL_NO_ENGINE
+#include <openssl/engine.h>
+#endif
 #include "ssl_locl.h"
 
 static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s);
@@ -870,6 +873,25 @@ int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx))(SSL * ssl, X509 ** x509 , EVP_PK
         return ctx->client_cert_cb;
         }
 
+#ifndef OPENSSL_NO_ENGINE
+int SSL_CTX_set_client_cert_engine(SSL_CTX *ctx, ENGINE *e)
+        {
+        if (!ENGINE_init(e))
+                {
+                SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE, ERR_R_ENGINE_LIB);
+                return 0;
+                }
+        if(!ENGINE_get_ssl_client_cert_function(e))
+                {
+                SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE, SSL_R_NO_CLIENT_CERT_METHOD);
+                ENGINE_finish(e);
+                return 0;
+                }
+        ctx->client_cert_engine = e;
+        return 1;
+        }
+#endif
+
 void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx,
         int (*cb)(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len))
         {