mirror of
https://github.com/falcosecurity/falco.git
synced 2025-09-29 22:27:41 +00:00
2ee95122df
Both the parser.lua and compiler.lua modules are not necessary anymore, because all the logic related to filter parsing and compilation is handled inside libsinsp now. Accordingly, they have been removed from the lua-to-cpp.sh scripts. README.md and parse-smoke.sh have been removed since they are not needed anymore: lpeg is not used by the project, and the smoke tests are implemented in libsisnsp unit test suite. Signed-off-by: Jason Dellaluce <jasondellaluce@gmail.com>
79 lines
2.3 KiB
Bash
79 lines
2.3 KiB
Bash
#!/bin/bash
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set -euo pipefail
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LUA_FILE_DIR=$1
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LYAML_LUA_DIR=$2
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OUTPUT_DIR=$3
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MODULE_SYMS=()
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CODE_SYMS=()
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function add_lua_file {
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filename=$1
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is_module=$2
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# Take the basename of the file
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BASE_NAME=$(basename ${file} .lua)
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SYMBOL_NAME="${BASE_NAME}_lua_file_contents"
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FILE_CONTENTS=$(<${file})
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# Add a symbol to the .cc file containing the contents of the file
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echo "const char *${SYMBOL_NAME}=R\"LUAFILE(${FILE_CONTENTS})LUAFILE\";" >> ${OUTPUT_DIR}/falco_engine_lua_files.cpp
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# Add an extern reference to the .hh file
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echo "extern const char *${SYMBOL_NAME};" >> ${OUTPUT_DIR}/falco_engine_lua_files.hh
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if [[ "${is_module}" == "true" ]]; then
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# Determine the module name for the file
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if [[ "${file}" == *"/"* ]]; then
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MODULE_NAME=$(echo ${file} | tr / . | sed -e 's/.lua//')
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else
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MODULE_NAME=$(basename ${file} .lua)
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fi
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# Add the pair (string contents, module name) to MODULE_SYMS
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PAIR=$(echo "{${SYMBOL_NAME},\"${MODULE_NAME}\"}")
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MODULE_SYMS+=(${PAIR})
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else
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# Add the string to CODE_SYMS
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CODE_SYMS+=(${SYMBOL_NAME})
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fi
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}
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cat <<EOF > ${OUTPUT_DIR}/falco_engine_lua_files.cpp
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// Automatically generated. Do not edit
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#include "falco_engine_lua_files.hh"
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EOF
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cat <<EOF > ${OUTPUT_DIR}/falco_engine_lua_files.hh
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#pragma once
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// Automatically generated. Do not edit
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#include <list>
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#include <utility>
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EOF
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# lyaml and any files in the "modules" subdirectory are treated as lua
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# modules.
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pushd ${LYAML_LUA_DIR}
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for file in *.lua */*.lua; do
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add_lua_file $file "true"
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done
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popd
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# Any .lua files in this directory are treated as code with functions
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# to execute.
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pushd ${LUA_FILE_DIR}
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for file in ${LUA_FILE_DIR}/*.lua; do
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add_lua_file $file "false"
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done
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popd
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# Create a list of lua module (string, module name) pairs from MODULE_SYMS
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echo "extern std::list<std::pair<const char *,const char *>> lua_module_strings;" >> ${OUTPUT_DIR}/falco_engine_lua_files.hh
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echo "std::list<std::pair<const char *,const char *>> lua_module_strings = {$(IFS=, ; echo "${MODULE_SYMS[*]}")};" >> ${OUTPUT_DIR}/falco_engine_lua_files.cpp
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# Create a list of lua code strings from CODE_SYMS
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echo "extern std::list<const char *> lua_code_strings;" >> ${OUTPUT_DIR}/falco_engine_lua_files.hh
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echo "std::list<const char *> lua_code_strings = {$(IFS=, ; echo "${CODE_SYMS[*]}")};" >> ${OUTPUT_DIR}/falco_engine_lua_files.cpp
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