From 1d6c97b0f0420e0c02f5d6051a28aced0d77990c Mon Sep 17 00:00:00 2001 From: tenderlove Date: Wed, 22 Jul 2015 18:34:45 +0000 Subject: * ext/openssl/ossl_ssl.c: add ECDH callback support. [Feature #11356] * test/openssl/test_pair.rb: test for ECDH callback support git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51348 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- ext/openssl/ossl_ssl.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) (limited to 'ext/openssl/ossl_ssl.c') diff --git a/ext/openssl/ossl_ssl.c b/ext/openssl/ossl_ssl.c index 4bd8f018e9..ccff027a6c 100644 --- a/ext/openssl/ossl_ssl.c +++ b/ext/openssl/ossl_ssl.c @@ -65,6 +65,7 @@ static VALUE eSSLErrorWaitWritable; #define ossl_sslctx_get_cert_store(o) rb_iv_get((o),"@cert_store") #define ossl_sslctx_get_extra_cert(o) rb_iv_get((o),"@extra_chain_cert") #define ossl_sslctx_get_client_cert_cb(o) rb_iv_get((o),"@client_cert_cb") +#define ossl_sslctx_get_tmp_ecdh_cb(o) rb_iv_get((o),"@tmp_ecdh_callback") #define ossl_sslctx_get_tmp_dh_cb(o) rb_iv_get((o),"@tmp_dh_callback") #define ossl_sslctx_get_sess_id_ctx(o) rb_iv_get((o),"@session_id_context") @@ -74,6 +75,7 @@ static const char *ossl_sslctx_attrs[] = { "verify_callback", "options", "cert_store", "extra_chain_cert", "client_cert_cb", "tmp_dh_callback", "session_id_context", "session_get_cb", "session_new_cb", "session_remove_cb", + "tmp_ecdh_callback", #ifdef HAVE_SSL_SET_TLSEXT_HOST_NAME "servername_cb", #endif @@ -89,6 +91,7 @@ static const char *ossl_sslctx_attrs[] = { #define ossl_ssl_get_x509(o) rb_iv_get((o),"@x509") #define ossl_ssl_get_key(o) rb_iv_get((o),"@key") #define ossl_ssl_get_tmp_dh(o) rb_iv_get((o),"@tmp_dh") +#define ossl_ssl_get_tmp_ecdh(o) rb_iv_get((o),"@tmp_ecdh") #define ossl_ssl_set_io(o,v) rb_iv_set((o),"@io",(v)) #define ossl_ssl_set_ctx(o,v) rb_iv_set((o),"@context",(v)) @@ -96,6 +99,7 @@ static const char *ossl_sslctx_attrs[] = { #define ossl_ssl_set_x509(o,v) rb_iv_set((o),"@x509",(v)) #define ossl_ssl_set_key(o,v) rb_iv_set((o),"@key",(v)) #define ossl_ssl_set_tmp_dh(o,v) rb_iv_set((o),"@tmp_dh",(v)) +#define ossl_ssl_set_tmp_ecdh(o,v) rb_iv_set((o),"@tmp_ecdh",(v)) static const char *ossl_ssl_attr_readers[] = { "io", "context", }; static const char *ossl_ssl_attrs[] = { @@ -152,6 +156,7 @@ int ossl_ssl_ex_store_p; int ossl_ssl_ex_ptr_idx; int ossl_ssl_ex_client_cert_cb_idx; int ossl_ssl_ex_tmp_dh_callback_idx; +int ossl_ssl_ex_tmp_ecdh_callback_idx; static void ossl_sslctx_free(void *ptr) @@ -337,6 +342,41 @@ ossl_default_tmp_dh_callback(SSL *ssl, int is_export, int keylength) } #endif /* OPENSSL_NO_DH */ +#if !defined(OPENSSL_NO_EC) +static VALUE +ossl_call_tmp_ecdh_callback(VALUE args) +{ + SSL *ssl; + VALUE cb, ecdh; + EVP_PKEY *pkey; + + GetSSL(rb_ary_entry(args, 0), ssl); + cb = (VALUE)SSL_get_ex_data(ssl, ossl_ssl_ex_tmp_ecdh_callback_idx); + if (NIL_P(cb)) return Qfalse; + ecdh = rb_apply(cb, rb_intern("call"), args); + pkey = GetPKeyPtr(ecdh); + if (EVP_PKEY_type(pkey->type) != EVP_PKEY_EC) return Qfalse; + ossl_ssl_set_tmp_ecdh(rb_ary_entry(args, 0), ecdh); + + return Qtrue; +} + +static EC_KEY* +ossl_tmp_ecdh_callback(SSL *ssl, int is_export, int keylength) +{ + VALUE args, success, rb_ssl; + + rb_ssl = (VALUE)SSL_get_ex_data(ssl, ossl_ssl_ex_ptr_idx); + + args = rb_ary_new_from_args(3, rb_ssl, INT2FIX(is_export), INT2FIX(keylength)); + + success = rb_protect(ossl_call_tmp_ecdh_callback, args, NULL); + if (!RTEST(success)) return NULL; + + return GetPKeyPtr(ossl_ssl_get_tmp_ecdh(rb_ssl))->pkey.ec; +} +#endif + static int ossl_ssl_verify_callback(int preverify_ok, X509_STORE_CTX *ctx) { @@ -719,6 +759,13 @@ ossl_sslctx_setup(VALUE self) SSL_CTX_set_tmp_dh_callback(ctx, ossl_default_tmp_dh_callback); } #endif + +#if !defined(OPENSSL_NO_EC) + if (RTEST(ossl_sslctx_get_tmp_ecdh_cb(self))){ + SSL_CTX_set_tmp_ecdh_callback(ctx, ossl_tmp_ecdh_callback); + } +#endif + SSL_CTX_set_ex_data(ctx, ossl_ssl_ex_ptr_idx, (void*)self); val = ossl_sslctx_get_cert_store(self); @@ -1275,6 +1322,8 @@ ossl_ssl_setup(VALUE self) SSL_set_ex_data(ssl, ossl_ssl_ex_client_cert_cb_idx, (void*)cb); cb = ossl_sslctx_get_tmp_dh_cb(v_ctx); SSL_set_ex_data(ssl, ossl_ssl_ex_tmp_dh_callback_idx, (void*)cb); + cb = ossl_sslctx_get_tmp_ecdh_cb(v_ctx); + SSL_set_ex_data(ssl, ossl_ssl_ex_tmp_ecdh_callback_idx, (void*)cb); SSL_set_info_callback(ssl, ssl_info_cb); } @@ -1990,6 +2039,8 @@ Init_ossl_ssl(void) SSL_get_ex_new_index(0,(void *)"ossl_ssl_ex_client_cert_cb_idx",0,0,0); ossl_ssl_ex_tmp_dh_callback_idx = SSL_get_ex_new_index(0,(void *)"ossl_ssl_ex_tmp_dh_callback_idx",0,0,0); + ossl_ssl_ex_tmp_ecdh_callback_idx = + SSL_get_ex_new_index(0,(void *)"ossl_ssl_ex_tmp_ecdh_callback_idx",0,0,0); /* Document-module: OpenSSL::SSL * @@ -2113,6 +2164,18 @@ Init_ossl_ssl(void) rb_attr(cSSLContext, rb_intern("client_cert_cb"), 1, 1, Qfalse); /* + * A callback invoked when ECDH parameters are required. + * + * The callback is invoked with the Session for the key exchange, an + * flag indicating the use of an export cipher and the keylength + * required. + * + * The callback must return an OpenSSL::PKey::EC instance of the correct + * key length. + */ + rb_attr(cSSLContext, rb_intern("tmp_ecdh_callback"), 1, 1, Qfalse); + + /* * A callback invoked when DH parameters are required. * * The callback is invoked with the Session for the key exchange, an -- cgit v1.2.3