new(cmake,userspace): port Falco to use new container plugin.

It will be shipped by default hence it is present in default config.

Signed-off-by: Federico Di Pierro <nierro92@gmail.com>

cmake/modules/curl.cmake

@@ -0,0 +1,100 @@
+# SPDX-License-Identifier: Apache-2.0
+#
+# Copyright (C) 2023 The Falco Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+# in compliance with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software distributed under the License
+# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+# or implied. See the License for the specific language governing permissions and limitations under
+# the License.
+#
+
+option(USE_BUNDLED_CURL "Enable building of the bundled curl" ${USE_BUNDLED_DEPS})
+
+include(openssl)
+include(zlib)
+
+if(CURL_INCLUDE_DIRS)
+	# we already have curl
+elseif(NOT USE_BUNDLED_CURL)
+	find_package(CURL REQUIRED)
+	message(STATUS "Found CURL: include: ${CURL_INCLUDE_DIRS}, lib: ${CURL_LIBRARIES}")
+else()
+	if(BUILD_SHARED_LIBS)
+		set(CURL_LIB_SUFFIX ${CMAKE_SHARED_LIBRARY_SUFFIX})
+		set(CURL_STATIC_OPTION)
+	else()
+		set(CURL_LIB_SUFFIX ${CMAKE_STATIC_LIBRARY_SUFFIX})
+		set(CURL_STATIC_OPTION --disable-shared)
+	endif()
+	set(CURL_BUNDLE_DIR "${PROJECT_BINARY_DIR}/curl-prefix/src/curl")
+	set(CURL_INCLUDE_DIRS "${CURL_BUNDLE_DIR}/include/")
+	set(CURL_LIBRARIES "${CURL_BUNDLE_DIR}/lib/.libs/libcurl${CURL_LIB_SUFFIX}")
+
+	if(NOT USE_BUNDLED_OPENSSL)
+		set(CURL_SSL_OPTION "--with-ssl")
+	else()
+		set(CURL_SSL_OPTION "--with-ssl=${OPENSSL_INSTALL_DIR}")
+		message(STATUS "Using SSL for curl in '${OPENSSL_INSTALL_DIR}'")
+	endif()
+
+	if(NOT USE_BUNDLED_ZLIB)
+		set(CURL_ZLIB_OPTION "--with-zlib")
+	else()
+		set(CURL_ZLIB_OPTION "--with-zlib=${ZLIB_SRC}")
+		message(STATUS "Using zlib for curl in '${ZLIB_SRC}'")
+	endif()
+	message(STATUS "Using bundled curl in '${CURL_BUNDLE_DIR}'")
+
+	if(NOT ENABLE_PIC)
+		set(CURL_PIC_OPTION)
+	else()
+		set(CURL_PIC_OPTION "--with-pic")
+	endif()
+
+	if(NOT TARGET curl)
+		ExternalProject_Add(
+			curl
+			PREFIX "${PROJECT_BINARY_DIR}/curl-prefix"
+			DEPENDS openssl zlib
+			URL "https://github.com/curl/curl/releases/download/curl-8_7_1/curl-8.7.1.tar.bz2"
+			URL_HASH "SHA256=05bbd2b698e9cfbab477c33aa5e99b4975501835a41b7ca6ca71de03d8849e76"
+			CONFIGURE_COMMAND
+				./configure ${CURL_SSL_OPTION} ${CURL_ZLIB_OPTION} ${CURL_STATIC_OPTION}
+				${CURL_PIC_OPTION} --enable-optimize --disable-curldebug --disable-rt --enable-http
+				--disable-ftp --disable-file --disable-ldap --disable-ldaps --disable-rtsp
+				--disable-telnet --disable-tftp --disable-pop3 --disable-imap --disable-smb
+				--disable-smtp --disable-gopher --disable-sspi --disable-ntlm-wb --disable-tls-srp
+				--without-winssl --without-polarssl --without-cyassl --without-nss --without-axtls
+				--without-librtmp --without-winidn --without-libidn2 --without-libpsl
+				--without-nghttp2 --without-libssh2 --with-ca-path=/etc/ssl/certs/
+				--disable-threaded-resolver --without-brotli --without-zstd
+			BUILD_COMMAND make
+			BUILD_IN_SOURCE 1
+			BUILD_BYPRODUCTS ${CURL_LIBRARIES}
+			INSTALL_COMMAND ""
+		)
+		install(
+			FILES "${CURL_LIBRARIES}"
+			DESTINATION "${CMAKE_INSTALL_LIBDIR}/${LIBS_PACKAGE_NAME}"
+			COMPONENT "libs-deps"
+		)
+		install(
+			DIRECTORY "${CURL_INCLUDE_DIRS}curl"
+			DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${LIBS_PACKAGE_NAME}"
+			COMPONENT "libs-deps"
+			FILES_MATCHING
+			PATTERN "*.h"
+		)
+	endif()
+endif()
+
+if(NOT TARGET curl)
+	add_custom_target(curl)
+endif()
+
+include_directories("${CURL_INCLUDE_DIRS}")