Externals: Add libcurl.

Externals/curl/lib/vtls/mbedtls.h

@@ -0,0 +1,80 @@
+#ifndef HEADER_CURL_MBEDTLS_H
+#define HEADER_CURL_MBEDTLS_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 2012 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 2010, Hoi-Ho Chan, <hoiho.chan@gmail.com>
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+#include "curl_setup.h"
+
+#ifdef USE_MBEDTLS
+
+#include <mbedtls/sha256.h>
+
+/* Called on first use mbedTLS, setup threading if supported */
+int  Curl_mbedtls_init(void);
+void Curl_mbedtls_cleanup(void);
+int Curl_mbedtls_data_pending(const struct connectdata *conn, int sockindex);
+
+CURLcode Curl_mbedtls_connect(struct connectdata *conn, int sockindex);
+
+CURLcode Curl_mbedtls_connect_nonblocking(struct connectdata *conn,
+                                           int sockindex,
+                                           bool *done);
+
+/* tell mbedTLS to close down all open information regarding connections (and
+   thus session ID caching etc) */
+void Curl_mbedtls_close_all(struct SessionHandle *data);
+
+ /* close a SSL connection */
+void Curl_mbedtls_close(struct connectdata *conn, int sockindex);
+
+void Curl_mbedtls_session_free(void *ptr);
+size_t Curl_mbedtls_version(char *buffer, size_t size);
+int Curl_mbedtls_shutdown(struct connectdata *conn, int sockindex);
+
+/* this backends supports CURLOPT_PINNEDPUBLICKEY */
+#define have_curlssl_pinnedpubkey 1
+
+/* API setup for mbedTLS */
+#define curlssl_init() Curl_mbedtls_init()
+#define curlssl_cleanup() Curl_mbedtls_cleanup()
+#define curlssl_connect Curl_mbedtls_connect
+#define curlssl_connect_nonblocking Curl_mbedtls_connect_nonblocking
+#define curlssl_session_free(x)  Curl_mbedtls_session_free(x)
+#define curlssl_close_all Curl_mbedtls_close_all
+#define curlssl_close Curl_mbedtls_close
+#define curlssl_shutdown(x,y) 0
+#define curlssl_set_engine(x,y) (x=x, y=y, CURLE_NOT_BUILT_IN)
+#define curlssl_set_engine_default(x) (x=x, CURLE_NOT_BUILT_IN)
+#define curlssl_engines_list(x) (x=x, (struct curl_slist *)NULL)
+#define curlssl_version Curl_mbedtls_version
+#define curlssl_check_cxn(x) (x=x, -1)
+#define curlssl_data_pending(x,y) Curl_mbedtls_data_pending(x, y)
+#define CURL_SSL_BACKEND CURLSSLBACKEND_MBEDTLS
+#define curlssl_sha256sum(a,b,c,d) mbedtls_sha256(a,b,c,0)
+
+/* This might cause libcurl to use a weeker random!
+   TODO: implement proper use of Polarssl's CTR-DRBG or HMAC-DRBG and use that
+*/
+#define curlssl_random(x,y,z) (x=x, y=y, z=z, CURLE_NOT_BUILT_IN)
+
+#endif /* USE_MBEDTLS */
+#endif /* HEADER_CURL_MBEDTLS_H */