feat(tls_cxx): Publish mbedtls component

Adds examples and tests.
Also supports DTLS now.

components/mbedtls_cxx/examples/test_certs/CMakeLists.txt

@@ -0,0 +1,8 @@
+idf_component_register(
+        EMBED_TXTFILES srv.crt
+        EMBED_TXTFILES srv.key
+        EMBED_TXTFILES ca.crt
+        EMBED_TXTFILES client.crt
+        EMBED_TXTFILES client.key
+        INCLUDE_DIRS "."
+        REQUIRES mbedtls_cxx)

components/mbedtls_cxx/examples/test_certs/README.md

@@ -0,0 +1,4 @@
+# Test Certificates and Keys
+
+This is a utility component, that uses test certificates for server and client side in examples and tests.
+These are self-signed certificates and generated only for test and demonstration purposes.

components/mbedtls_cxx/examples/test_certs/ca.crt

@@ -0,0 +1,19 @@
+-----BEGIN CERTIFICATE-----
+MIIDIzCCAgugAwIBAgIULOncUeRLKxgrihIh1kHGGlPV7ecwDQYJKoZIhvcNAQEL
+BQAwITELMAkGA1UEBhMCQ1oxEjAQBgNVBAMMCUVzcHJlc3NpZjAeFw0yNDA0MDMw
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+KEegbP67hSnJJhQ7tezoOu4OE0xmJp0XmGPMNewYARqL2UvHnZyf
+-----END CERTIFICATE-----

components/mbedtls_cxx/examples/test_certs/client.crt

@@ -0,0 +1,17 @@
+-----BEGIN CERTIFICATE-----
+MIICwjCCAaoCFAWE4aJdYWbMJAaBTMxVpoXMrhzvMA0GCSqGSIb3DQEBCwUAMCEx
+CzAJBgNVBAYTAkNaMRIwEAYDVQQDDAlFc3ByZXNzaWYwHhcNMjQwNDAzMDkxNjE4
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+iPNfYZ1t9KwEjkKN+jBTXKu7QhB/u+g5yBHjRL++LEli4YGGGiA=
+-----END CERTIFICATE-----

components/mbedtls_cxx/examples/test_certs/client.key

@@ -0,0 +1,27 @@
+-----BEGIN RSA PRIVATE KEY-----
+MIIEpQIBAAKCAQEA3I3QUN7B237lkaNi5amRd+w37sps+f36vrM3Di1FFgnHMZLv
+ajTRHWQHGRzLCDbq3s6R12umTShqpm5qmT1axCszFCKJaZ0JnHq0bf8iqsQmf5IL
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+ASzSNWdYBIGNkqsQGmGCtF9+i6V4acfTTbMD9LiB7u5/enQa8N0Qg+s=
+-----END RSA PRIVATE KEY-----

components/mbedtls_cxx/examples/test_certs/idf_component.yml

@@ -0,0 +1,4 @@
+dependencies:
+  espressif/mbedtls_cxx:
+    version: "*"
+    override_path: "../.."

components/mbedtls_cxx/examples/test_certs/srv.crt

@@ -0,0 +1,17 @@
+-----BEGIN CERTIFICATE-----
+MIICwjCCAaoCFAWE4aJdYWbMJAaBTMxVpoXMrhzuMA0GCSqGSIb3DQEBCwUAMCEx
+CzAJBgNVBAYTAkNaMRIwEAYDVQQDDAlFc3ByZXNzaWYwHhcNMjQwNDAzMDkxNTI3
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+-----END CERTIFICATE-----

components/mbedtls_cxx/examples/test_certs/srv.key

@@ -0,0 +1,27 @@
+-----BEGIN RSA PRIVATE KEY-----
+MIIEpQIBAAKCAQEAwoTD9s/jNDEsuHTTuuLbiaCN+5VgQRRJmkY+wJBEENqKQ9+q
+ib4L9ewFP0vfe70L6Zi9xiwtLiCjRb3VKdKe2cOJtFLjw1PDWUwlKoxiVVdmnb2M
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+jcofvRHBh/yYZwodabhoSHHtWOI2d+w1L2ECx/iezQM0uMfaXCsZ6ak=
+-----END RSA PRIVATE KEY-----

components/mbedtls_cxx/examples/test_certs/test_certs.hpp

@@ -0,0 +1,51 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#pragma once
+
+#include "mbedtls_wrap.hpp"
+
+namespace test_certs {
+using pem_format = const unsigned char;
+extern pem_format cacert_start[] asm("_binary_ca_crt_start");
+extern pem_format cacert_end[] asm("_binary_ca_crt_end");
+extern pem_format clientcert_start[] asm("_binary_client_crt_start");
+extern pem_format clientcert_end[] asm("_binary_client_crt_end");
+extern pem_format clientkey_start[] asm("_binary_client_key_start");
+extern pem_format clientkey_end[] asm("_binary_client_key_end");
+extern pem_format servercert_start[] asm("_binary_srv_crt_start");
+extern pem_format servercert_end[] asm("_binary_srv_crt_end");
+extern pem_format serverkey_start[] asm("_binary_srv_key_start");
+extern pem_format serverkey_end[] asm("_binary_srv_key_end");
+
+enum class type {
+    cacert,
+    servercert,
+    serverkey,
+    clientcert,
+    clientkey
+};
+
+#define IF_BUF_TYPE(buf_type)  \
+    if (t == type::buf_type) { \
+        return idf::mbedtls_cxx::const_buf{buf_type ## _start, buf_type ## _end - buf_type ## _start}; \
+    }
+
+static inline idf::mbedtls_cxx::const_buf get_buf(type t)
+{
+    IF_BUF_TYPE(cacert);
+    IF_BUF_TYPE(servercert);
+    IF_BUF_TYPE(serverkey);
+    IF_BUF_TYPE(clientcert);
+    IF_BUF_TYPE(clientkey);
+    return idf::mbedtls_cxx::const_buf{};
+}
+
+static inline const char *get_server_cn()
+{
+    return "espressif.local";
+}
+
+}