fixes #1849 merge wolfSSL support inline, and relicense it under same terms as NNG and add PSK

1 files changed, 66 insertions, 0 deletions

diff --git a/cmake/FindwolfSSL.cmake b/cmake/FindwolfSSL.cmake
new file mode 100644
index 00000000..c15b3abf
--- /dev/null
+++ b/cmake/FindwolfSSL.cmake
@@ -0,0 +1,66 @@
+#
+# Copyright 2024 Staysail Systems, Inc. <info@staysail.tech>
+#
+# 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 wolfSSL library.  We only support modern wolfSSL,
+# not the older CyaSSL.
+#
+# Sets the following:
+#
+#  WOLFSSL_INCLUDE_DIR  - Where to find wolfssl/ssl.h, etc.
+#  WOLFSSL_FOUND        - True if we found wolfSSL.
+#  WOLFSSL_LIBRARIES    - The wolfSSL library (libwolfssl).
+#  WOLFSSL_LIBRARY      - The wolfSSL library (libwolfssl).
+#  WOLFSSL_VERSION      - $major.$minor.$revision (e.g. ``3.13.0``).
+#
+# Adds wolfSSL::wolfssl target for the library.
+#
+# Hints:
+#
+# Set ``WOLFSSL_ROOT_DIR`` to the root directory of wolfSSL installation.
+#
+
+set(_WOLFSSL_ROOT_HINTS ${WOLFSSL_ROOT_DIR} ENV WOLFSSL_ROOT_DIR)
+
+include(FindPackageHandleStandardArgs)
+include(CMakePushCheckState)
+
+find_path(WOLFSSL_INCLUDE_DIR
+    NAMES wolfssl/ssl.h
+    HINTS ${_WOLFSSL_ROOT_HINTS}
+    PATHS /usr/local
+    PATH_SUFFIXES include)
+
+find_library(WOLFSSL_LIBRARY
+    NAMES wolfssl
+    HINTS ${_WOLFSSL_ROOT_HINTS}
+    PATHS /usr/local
+    PATH_SUFFIXES lib)
+
+set(WOLFSSL_LIBRARIES ${WOLFSSL_LIBRARY})
+if (${WOLFSSL_LIBRARY-NOTFOUND})
+    message(FATAL_ERROR "Failed to find wolfSSL library")
+endif()
+
+mark_as_advanced(WOLFSSL_INCLUDE_DIR WOLFSSL_LIBRARY)
+
+# Extract the version from the header... hopefully it matches the library.
+file(STRINGS ${WOLFSSL_INCLUDE_DIR}/wolfssl/version.h _WOLFSSL_VERLINE
+    REGEX "^#define[ \t]+LIBWOLFSSL_VERSION_STRING[\t ].*")
+string(REGEX REPLACE ".*WOLFSSL_VERSION_STRING[\t ]+\"(.*)\"" "\\1" WOLFSSL_VERSION ${_WOLFSSL_VERLINE})
+
+add_library(wolfSSL::wolfssl UNKNOWN IMPORTED)
+
+set_target_properties(wolfSSL::wolfssl PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${WOLFSSL_INCLUDE_DIR}")
+set_target_properties(wolfSSL::wolfssl PROPERTIES IMPORTED_LOCATION "${WOLFSSL_LIBRARY}")
+
+set(wolfSSL_TARGET wolfssl::wolfssl)
+
+find_package_handle_standard_args(wolfSSL
+    REQUIRED_VARS WOLFSSL_LIBRARY WOLFSSL_INCLUDE_DIR VERSION_VAR WOLFSSL_VERSION)