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authorGarrett D'Amore <garrett@damore.org>2017-11-09 14:09:14 -0800
committerGarrett D'Amore <garrett@damore.org>2017-11-20 21:49:09 -0800
commit02178a8b5843a2c5a59fb7b104e4f9f5df1ff5ee (patch)
tree122ee2bebf060aa26d6fa0778b877a6b7ca9b864 /cmake/FindmbedTLS.cmake
parente8694d15d0a108895bf869f292d59e11d834361e (diff)
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fixes #3 TLS transport
This introduces a new transport (compatible with the TLS transport from mangos), using TLS v1.2. To use the new transport, you must have the mbed TLS library available on your system (Xenial libmbedtls-dev). You can use version 2.x or newer -- 1.3.x and PolarSSL versions are not supported. You enable the TLS transport with -DNNG_TRANSPORT_TLS=ON in the CMake configuration. You must configure the server certificate by default, and this can only be done using nng options. See the nng_tls man page for details. This work is experimental, and was made possible by Capitar IT Group BV, and Staysail Systems, Inc.
Diffstat (limited to 'cmake/FindmbedTLS.cmake')
-rw-r--r--cmake/FindmbedTLS.cmake80
1 files changed, 80 insertions, 0 deletions
diff --git a/cmake/FindmbedTLS.cmake b/cmake/FindmbedTLS.cmake
new file mode 100644
index 00000000..e0c0aa5a
--- /dev/null
+++ b/cmake/FindmbedTLS.cmake
@@ -0,0 +1,80 @@
+#
+# Copyright 2017 Garrett D'Amore <garrett@damore.org>
+# Copyright 2017 Capitar IT Group BV <info@capitar.com>
+#
+# This software is supplied under the terms of the MIT License, a
+# copy of which should be located in the distribution where this
+# file was obtained (LICENSE.txt). A copy of the license may also be
+# found online at https://opensource.org/licenses/MIT.
+#
+
+#
+# Try to find the mbed TLS libraries.
+#
+# Sets the following:
+#
+# MBEDTLS_INCLUDE_DIR - Where to find ssl.h, etc.
+# MBEDTLS_FOUND - True if we found mbedtls.
+# MBEDTLS_CRYPTO_LIBRARY - The mbedcrypto library.
+# MBEDTLS_X509_LIBRARY - The mbedx509 library.
+# MBEDTLS_TLS_LIBRARY - The mbedtls library.
+# MBEDTLS_LIBRARIES - List of all three mbedtls libraries.
+# MBEDTLS_VERSION - $major.$minor.$revision (e.g. ``2.6.0``).
+#
+# Hints:
+#
+# Set ``MBEDTLS_ROOT_DIR`` to the root directory of mbed TLS installation.
+#
+
+set(_MBEDTLS_ROOT_HINTS ${MBEDTLS_ROOT_DIR} ENV MBEDTLS_ROOT_DIR)
+
+include(FindPackageHandleStandardArgs)
+
+find_path(MBEDTLS_INCLUDE_DIR
+ NAMES mbedtls/ssl.h
+ HINTS ${_MBEDTLS_ROOT_HINTS}
+ PATHS /usr/local
+ PATH_SUFFIXES include)
+
+find_library(MBEDTLS_CRYPTO_LIBRARY
+ NAMES mbedcrypto
+ HINTS ${_MBEDTLS_ROOT_HINTS}
+ PATHS /usr/local
+ PATH_SUFFIXES lib)
+
+find_library(MBEDTLS_X509_LIBRARY
+ NAMES mbedx509
+ HINTS ${_MBEDTLS_ROOT_HINTS}
+ PATHS /usr/local
+ PATH_SUFFIXES lib)
+
+find_library(MBEDTLS_TLS_LIBRARY
+ NAMES mbedtls
+ HINTS ${_MBEDTLS_ROOT_HINTS}
+ PATHS /usr/local
+ PATH_SUFFIXES lib)
+
+set(MBEDTLS_LIBRARIES
+ ${MBEDTLS_TLS_LIBRARY}
+ ${MBEDTLS_X509_LIBRARY}
+ ${MBEDTLS_CRYPTO_LIBRARY})
+
+if (${MBEDTLS_TLS_LIBRARY-NOTFOUND})
+ message(FATAL_ERROR "Failed to find mbed TLS library")
+endif()
+
+mark_as_advanced(
+ MBEDSSL_INCLUDE_DIR
+ MBEDTLS_LIBRRIES
+ MBEDTLS_CRYPTO_LIBRARY
+ MBEDTLS_X509_LIBRARY
+ MBEDTLS_TLS_LIBRARY)
+
+# Extract the version from the header... hopefully it matches the library.
+file(STRINGS ${MBEDTLS_INCLUDE_DIR}/mbedtls/version.h _MBEDTLS_VERLINE
+ REGEX "^#define[ \t]+MBEDTLS_VERSION_STRING[\t ].*")
+string(REGEX REPLACE ".*MBEDTLS_VERSION_STRING[\t ]+\"(.*)\"" "\\1" MBEDTLS_VERSION ${_MBEDTLS_VERLINE})
+
+find_package_handle_standard_args(mbedTLS
+ REQUIRED_VARS MBEDTLS_TLS_LIBRARY MBEDTLS_CRYPTO_LIBRARY MBEDTLS_X509_LIBRARY MBEDTLS_INCLUDE_DIR VERSION_VAR MBEDTLS_VERSION)
+