BoringSSL as optional cryptobackend for ngtcp2

PR добавляет возможность использовать BoringSSL в ngtcp2 в качестве криптобиблиотеки. Для проектов в Аркадии, уже зависящих от ngtcp2, добавлена явная зависимость от слоя абстракции quictls (сейчас в транке ngtcp2 собирается с quictls).
commit_hash:3d6607abecfcff2157859acbdd18f9d0345ac485

1 files changed, 105 insertions, 0 deletions

diff --git a/contrib/restricted/google/boringssl/decrepit/dsa/dsa_decrepit.c b/contrib/restricted/google/boringssl/decrepit/dsa/dsa_decrepit.c
new file mode 100644
index 00000000000..c129359c4ae
--- /dev/null
+++ b/contrib/restricted/google/boringssl/decrepit/dsa/dsa_decrepit.c
@@ -0,0 +1,105 @@
+/* ====================================================================
+ * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    [email protected].
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * ([email protected]).  This product includes software written by Tim
+ * Hudson ([email protected]). */
+
+#include <contrib/restricted/google/boringssl/include/openssl/bn.h>
+#include <contrib/restricted/google/boringssl/include/openssl/dsa.h>
+
+
+struct wrapped_callback {
+  void (*callback)(int, int, void *);
+  void *arg;
+};
+
+// callback_wrapper converts an “old” style generation callback to the newer
+// |BN_GENCB| form.
+static int callback_wrapper(int event, int n, BN_GENCB *gencb) {
+  struct wrapped_callback *wrapped = (struct wrapped_callback *) gencb->arg;
+  wrapped->callback(event, n, wrapped->arg);
+  return 1;
+}
+
+DSA *DSA_generate_parameters(int bits, uint8_t *seed_in, int seed_len,
+                             int *counter_ret, unsigned long *h_ret,
+                             void (*callback)(int, int, void *), void *cb_arg) {
+  if (bits < 0 || seed_len < 0) {
+      return NULL;
+  }
+
+  DSA *ret = DSA_new();
+  if (ret == NULL) {
+      return NULL;
+  }
+
+  BN_GENCB gencb_storage;
+  BN_GENCB *cb = NULL;
+
+  struct wrapped_callback wrapped;
+
+  if (callback != NULL) {
+    wrapped.callback = callback;
+    wrapped.arg = cb_arg;
+
+    cb = &gencb_storage;
+    BN_GENCB_set(cb, callback_wrapper, &wrapped);
+  }
+
+  if (!DSA_generate_parameters_ex(ret, bits, seed_in, seed_len, counter_ret,
+                                  h_ret, cb)) {
+    goto err;
+  }
+
+  return ret;
+
+err:
+  DSA_free(ret);
+  return NULL;
+}