Adds support to LUA in configure scripts

build/lua.m4

@@ -0,0 +1,152 @@
+dnl Check for LUA Libraries
+dnl CHECK_LUA(ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND])
+
+
+AC_DEFUN([CHECK_LUA],
+[dnl
+
+# Possible names for the lua library/package (pkg-config)
+LUA_POSSIBLE_LIB_NAMES="lua"
+
+# Possible extensions for the library
+LUA_POSSIBLE_EXTENSIONS="so so0 la sl dll dylib so.0.0.0"
+
+# Possible paths (if pkg-config was not found, proceed with the file lookup)
+LUA_POSSIBLE_PATHS="/usr/lib /usr/local/lib /usr/local/lua /usr/local/liblua /usr/local /opt /usr /usr/lib64 /opt/local"
+
+# Variables to be set by this very own script.
+LUA_CFLAGS=""
+LUA_LDFLAGS=""
+LUA_LDADD=""
+LUA_DISPLAY=""
+
+AC_ARG_WITH(
+    lua,
+    AC_HELP_STRING(
+    [--with-lua=PATH],
+    [Path to lua prefix]
+    )
+)
+
+
+if test "x${with_lua}" == "xno"; then
+    AC_DEFINE(HAVE_LUA, 0, [Support for LUA was disabled by the utilization of --without-lua or --with-lua=no])
+    AC_MSG_NOTICE([Support for LUA was disabled by the utilization of --without-lua or --with-lua=no])
+    LUA_DISABLED=yes
+else
+    if test "x${with_lua}" == "xyes"; then
+        LUA_MANDATORY=yes
+        AC_MSG_NOTICE([LUA support was marked as mandatory by the utilization of --with-lua=yes])
+    else
+        LUA_MANDATORY=no
+    fi
+    for x in ${LUA_POSSIBLE_PATHS}; do
+        CHECK_FOR_LUA_AT(${x})
+        if test -n "${LUA_CFLAGS}"; then
+            break
+        fi
+    done
+fi
+
+
+if test -z "${LUA_CFLAGS}"; then
+    if test -z "${LUA_MANDATORY}" || test "x${LUA_MANDATORY}" == "xno"; then
+        if test -z "${LUA_DISABLED}"; then
+            AC_MSG_NOTICE([LUA library was not found])
+            LUA_FOUND=0
+        else
+            LUA_FOUND=2
+        fi
+    else
+        AC_MSG_ERROR([LUA was explicitly referenced but it was not found])
+        LUA_FOUND=-1
+    fi
+else
+    if test -z "${LUA_MANDATORY}" || test "x${LUA_MANDATORY}" == "xno"; then
+        LUA_FOUND=2
+        AC_MSG_NOTICE([LUA is disabled by default.])
+    else
+        LUA_FOUND=1
+        AC_MSG_NOTICE([using LUA v${LUA_VERSION}])
+        LUA_CFLAGS="-DWITH_LUA ${LUA_CFLAGS}"
+        LUA_DISPLAY="${LUA_LDADD} ${LUA_LDFLAGS}, ${LUA_CFLAGS}"
+        AC_SUBST(LUA_LDFLAGS)
+        AC_SUBST(LUA_LDADD)
+        AC_SUBST(LUA_CFLAGS)
+        AC_SUBST(LUA_DISPLAY)
+    fi
+fi
+
+
+AC_SUBST(LUA_FOUND)
+
+]) # AC_DEFUN [CHECK_LUA]
+
+
+AC_DEFUN([CHECK_FOR_LUA_AT], [
+    path=$1
+    echo "*** LOOKING AT PATH: " ${path}
+    for y in ${LUA_POSSIBLE_EXTENSIONS}; do
+        for z in ${LUA_POSSIBLE_LIB_NAMES}; do
+           if test -e "${path}/${z}.${y}"; then
+               lua_lib_path="${path}/"
+               lua_lib_name="${z}"
+               lua_lib_file="${lua_lib_path}/${z}.${y}"
+               break
+           fi
+           if test -e "${path}/lib${z}.${y}"; then
+               lua_lib_path="${path}/"
+               lua_lib_name="${z}"
+               lua_lib_file="${lua_lib_path}/lib${z}.${y}"
+               break
+           fi
+           if test -e "${path}/lib/lib${z}.${y}"; then
+               lua_lib_path="${path}/lib/"
+               lua_lib_name="${z}"
+               lua_lib_file="${lua_lib_path}/lib${z}.${y}"
+               break
+           fi
+           if test -e "${path}/lib/x86_64-linux-gnu/lib${z}.${y}"; then
+               lua_lib_path="${path}/lib/x86_64-linux-gnu/"
+               lua_lib_name="${z}"
+               lua_lib_file="${lua_lib_path}/lib${z}.${y}"
+               break
+           fi
+           if test -e "${path}/lib/i386-linux-gnu/lib${z}.${y}"; then
+               lua_lib_path="${path}/lib/i386-linux-gnu/"
+               lua_lib_name="${z}"
+               lua_lib_file="${lua_lib_path}/lib${z}.${y}"
+               break
+           fi
+       done
+       if test -n "$lua_lib_path"; then
+           break
+       fi
+    done
+    if test -e "${path}/include/fuzzy.h"; then
+        lua_inc_path="${path}/include"
+    elif test -e "${path}/fuzzy.h"; then
+        lua_inc_path="${path}"
+    elif test -e "${path}/include/fuzzy/fuzzy.h"; then
+        lua_inc_path="${path}/include"
+    fi
+
+    if test -n "${lua_lib_path}"; then
+        AC_MSG_NOTICE([LUA library found at: ${lua_lib_file}])
+    fi
+
+    if test -n "${lua_inc_path}"; then
+        AC_MSG_NOTICE([LUA headers found at: ${lua_inc_path}])
+    fi
+
+    if test -n "${lua_lib_path}" -a -n "${lua_inc_path}"; then
+        # TODO: Compile a piece of code to check the version.
+        LUA_CFLAGS="-I${lua_inc_path}"
+        LUA_LDADD="-l${lua_lib_name}"
+        LUA_LDFLAGS="-L${lua_lib_path}"
+        LUA_DISPLAY="${lua_lib_file}, ${lua_inc_path}"
+    fi
+]) # AC_DEFUN [CHECK_FOR_LUA_AT]
+
+
+

configure.ac

@@ -90,6 +90,11 @@ AM_CONDITIONAL([LMDB_CFLAGS], [test "LMDB_CFLAGS" != ""])
 CHECK_SSDEEP
 AM_CONDITIONAL([SSDEEP_CFLAGS], [test "SSDEEP_CFLAGS" != ""])
 
+# Check for LUA
+CHECK_LUA
+AM_CONDITIONAL([LUA_CFLAGS], [test "LUA_CFLAGS" != ""])
+
+
 #
 # Check for curl
 #
@@ -504,6 +509,23 @@ if test "x$SSDEEP_FOUND" = "x2"; then
     echo "   + SSDEEP                                        ....disabled"
 fi
 
+## LUA
+if test "x$LUA_FOUND" = "x0"; then
+    echo "   + LUA                                           ....not found"
+fi
+if test "x$LUA_FOUND" = "x1"; then
+    echo -n "   + LUA                                           ....found "
+    if ! test "x$LUA_VERSION" = "x"; then
+        echo "v${LUA_VERSION}"
+    else
+        echo ""
+    fi
+    echo "      ${LUA_DISPLAY}"
+fi
+if test "x$LUA_FOUND" = "x2"; then
+    echo "   + LUA                                           ....disabled"
+fi
+
 
 echo " "
 echo " Other Options"

examples/multiprocess_c/Makefile.am

@@ -12,6 +12,7 @@ multi_LDADD = \
 	$(YAJL_LDFLAGS) \
 	$(GEOIP_LDFLAGS) \
 	$(SSDEEP_LDFLAGS) $(SSDEEP_LDADD) \
+	$(LUA_LDFLAGS) $(LUA_LDADD) \
 	$(GLOBAL_LDADD)
 
 multi_CFLAGS = \

examples/reading_logs_via_rule_message/Makefile.am

@@ -14,6 +14,7 @@ simple_request_LDADD = \
 	$(YAJL_LDFLAGS) $(YAJL_LDADD) \
 	$(LMDB_LDFLAGS) $(LMDB_LDADD) \
 	$(SSDEEP_LDFLAGS) $(SSDEEP_LDADD) \
+	$(LUA_LDFLAGS) $(LUA_LDADD) \
 	$(LIBXML2_LDADD) \
 	$(GLOBAL_LDADD)
 
@@ -32,6 +33,7 @@ simple_request_CPPFLAGS = \
 	$(MODSEC_NO_LOGS) \
 	$(YAJL_CFLAGS) \
 	$(LMDB_CFLAGS) \
+	$(LUA_CFLAGS) \
 	$(PCRE_CFLAGS) \
 	$(LIBXML2_CFLAGS)
 

examples/reading_logs_with_offset/Makefile.am

@@ -13,6 +13,7 @@ read_LDADD = \
 	$(YAJL_LDFLAGS) $(YAJL_LDADD) \
 	$(LMDB_LDFLAGS) $(LMDB_LDADD) \
 	$(SSDEEP_LDFLAGS) $(SSDEEP_LDADD) \
+	$(LUA_LDFLAGS) $(LUA_LDADD) \
 	$(LIBXML2_LDADD) \
 	$(GLOBAL_LDADD)
 
@@ -31,6 +32,7 @@ read_CPPFLAGS = \
 	$(MODSEC_NO_LOGS) \
 	$(YAJL_CFLAGS) \
 	$(LMDB_CFLAGS) \
+	$(LUA_CFLAGS) \
 	$(PCRE_CFLAGS) \
 	$(LIBXML2_CFLAGS)
 

examples/simple_example_using_c/Makefile.am

@@ -11,6 +11,7 @@ test_LDADD = \
 	$(YAJL_LDFLAGS) \
 	$(GEOIP_LDFLAGS) \
 	$(SSDEEP_LDFLAGS) $(SSDEEP_LDADD) \
+	$(LUA_LDFLAGS) $(LUA_LDADD) \
 	$(GLOBAL_LDADD)
 
 test_CFLAGS = \

examples/using_bodies_in_chunks/Makefile.am

@@ -14,6 +14,7 @@ simple_request_LDADD = \
 	$(YAJL_LDFLAGS) $(YAJL_LDADD) \
 	$(LMDB_LDFLAGS) $(LMDB_LDADD) \
 	$(SSDEEP_LDFLAGS) $(SSDEEP_LDADD) \
+	$(LUA_LDFLAGS) $(LUA_LDADD) \
 	$(LIBXML2_LDADD) \
 	$(GLOBAL_LDADD)
 
@@ -32,6 +33,7 @@ simple_request_CPPFLAGS = \
 	$(MODSEC_NO_LOGS) \
 	$(YAJL_CFLAGS) \
 	$(LMDB_CFLAGS) \
+	$(LUA_CFLAGS) \
 	$(PCRE_CFLAGS) \
 	$(LIBXML2_CFLAGS)
 

src/Makefile.am

@@ -78,6 +78,10 @@ noinst_HEADERS = \
 	*.h
 
 
+ENGINES = \
+	engines/lua.cc
+
+
 VARIABLES = \
 	variables/duration.cc \
 	variables/env.cc \
@@ -273,6 +277,7 @@ libmodsecurity_la_SOURCES = \
 	rules_exceptions.cc \
 	${BODY_PROCESSORS} \
 	${ACTIONS} \
+	${ENGINES} \
 	${COLLECTION} \
 	${OPERATORS} \
 	${UTILS} \
@@ -298,6 +303,7 @@ libmodsecurity_la_CPPFLAGS = \
 	$(LMDB_CFLAGS) \
 	$(PCRE_CFLAGS) \
 	$(SSDEEP_CFLAGS) \
+	$(LUA_CFLAGS) \
 	$(LIBXML2_CFLAGS)
 
 libmodsecurity_la_LIBADD = \
@@ -308,6 +314,7 @@ libmodsecurity_la_LIBADD = \
 	$(YAJL_LDFLAGS) $(YAJL_LDADD) \
 	$(LMDB_LDFLAGS) $(LMDB_LDADD) \
 	$(SSDEEP_LDFLAGS) $(SSDEEP_LDADD) \
+	$(LUA_LDFLAGS) $(LUA_LDADD) \
 	$(LIBXML2_LDADD) \
 	../others/libinjection.la \
 	../others/libmbedtls.la

src/engines/lua.cc

@@ -0,0 +1,32 @@
+/*
+ * ModSecurity, http://www.modsecurity.org/
+ * Copyright (c) 2015 Trustwave Holdings, Inc. (http://www.trustwave.com/)
+ *
+ * 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
+ *
+ * If any of the files related to licensing are missing or if you have any
+ * other questions related to licensing please contact Trustwave Holdings, Inc.
+ * directly using the email address security@modsecurity.org.
+ *
+ */
+
+
+#include "modsecurity/modsecurity.h"
+#include "src/engines/lua.h"
+
+
+#ifdef WITH_LUA
+#include <lua.hpp>
+
+
+#endif
+
+#ifndef SRC_ENGINES_LUA_H_
+#define SRC_ENGINES_LUA_H_
+
+
+
+#endif  // SRC_ENGINES_LUA_H_

test/benchmark/Makefile.am

@@ -13,6 +13,7 @@ benchmark_LDADD = \
 	$(YAJL_LDFLAGS) $(YAJL_LDADD) \
 	$(LMDB_LDFLAGS) $(LMDB_LDADD) \
 	$(SSDEEP_LDFLAGS) $(SSDEEP_LDADD) \
+	$(LUA_LDFLAGS) $(LUA_LDADD) \
 	$(LIBXML2_LDADD) \
 	$(GLOBAL_LDADD)
 

test/fuzzer/Makefile.am

@@ -21,6 +21,7 @@ afl_fuzzer_LDADD = \
 	$(YAJL_LDFLAGS) $(YAJL_LDADD) \
 	$(LMDB_LDFLAGS) $(LMDB_LDADD) \
 	$(SSDEEP_LDFLAGS) $(SSDEEP_LDADD) \
+	$(LUA_LDFLAGS) $(LUA_LDADD) \
 	$(LIBXML2_LDADD) \
 	$(top_builddir)/src/.libs/libmodsecurity.a \
 	$(top_builddir)/others/libinjection.la \

tools/rules-check/Makefile.am

@@ -13,6 +13,7 @@ modsec_rules_check_LDADD = \
 	$(YAJL_LDFLAGS) $(YAJL_LDADD) \
 	$(LMDB_LDFLAGS) $(LMDB_LDADD) \
 	$(SSDEEP_LDFLAGS) $(SSDEEP_LDADD) \
+	$(LUA_LDFLAGS) $(LUA_LDADD) \
 	$(LIBXML2_LDADD) \
 	$(GLOBAL_LDADD)