arptables-compat: add mangle target extension

This patch adds support to use the mangle target extensions, along with
the required changes in the surrounding code.

Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 38 insertions, 8 deletions

diff --git a/extensions/GNUmakefile.in b/extensions/GNUmakefile.in
index 9eb4bf98..4e94bd01 100644
--- a/extensions/GNUmakefile.in
+++ b/extensions/GNUmakefile.in
@@ -40,19 +40,23 @@ endif
 #
 pfx_build_mod := $(patsubst ${srcdir}/libxt_%.c,%,$(sort $(wildcard ${srcdir}/libxt_*.c)))
 pfb_build_mod := $(patsubst ${srcdir}/libebt_%.c,%,$(sort $(wildcard ${srcdir}/libebt_*.c)))
+pfa_build_mod := $(patsubst ${srcdir}/libarpt_%.c,%,$(sort $(wildcard ${srcdir}/libarpt_*.c)))
 pfx_symlinks  := NOTRACK state
 @ENABLE_IPV4_TRUE@ pf4_build_mod := $(patsubst ${srcdir}/libipt_%.c,%,$(sort $(wildcard ${srcdir}/libipt_*.c)))
 @ENABLE_IPV6_TRUE@ pf6_build_mod := $(patsubst ${srcdir}/libip6t_%.c,%,$(sort $(wildcard ${srcdir}/libip6t_*.c)))
 pfx_build_mod := $(filter-out @blacklist_modules@,${pfx_build_mod})
 pfb_build_mod := $(filter-out @blacklist_modules@,${pfb_build_mod})
+pfa_build_mod := $(filter-out @blacklist_modules@,${pfa_build_mod})
 pf4_build_mod := $(filter-out @blacklist_modules@,${pf4_build_mod})
 pf6_build_mod := $(filter-out @blacklist_modules@,${pf6_build_mod})
 pfx_objs      := $(patsubst %,libxt_%.o,${pfx_build_mod})
 pfb_objs      := $(patsubst %,libebt_%.o,${pfb_build_mod})
+pfa_objs      := $(patsubst %,libarpt_%.o,${pfa_build_mod})
 pf4_objs      := $(patsubst %,libipt_%.o,${pf4_build_mod})
 pf6_objs      := $(patsubst %,libip6t_%.o,${pf6_build_mod})
 pfx_solibs    := $(patsubst %,libxt_%.so,${pfx_build_mod} ${pfx_symlinks})
 pfb_solibs    := $(patsubst %,libebt_%.so,${pfb_build_mod})
+pfa_solibs    := $(patsubst %,libarpt_%.so,${pfa_build_mod})
 pf4_solibs    := $(patsubst %,libipt_%.so,${pf4_build_mod})
 pf6_solibs    := $(patsubst %,libip6t_%.so,${pf6_build_mod})
 
@@ -60,14 +64,15 @@ pf6_solibs    := $(patsubst %,libip6t_%.so,${pf6_build_mod})
 #
 # Building blocks
 #
-targets := libext.a libext4.a libext6.a libext_ebt.a matches.man targets.man
+targets := libext.a libext4.a libext6.a libext_ebt.a libext_arpt.a matches.man targets.man
 targets_install :=
 @ENABLE_STATIC_TRUE@ libext_objs := ${pfx_objs}
 @ENABLE_STATIC_TRUE@ libext_ebt_objs := ${pfb_objs}
+@ENABLE_STATIC_TRUE@ libext_arpt_objs := ${pfa_objs}
 @ENABLE_STATIC_TRUE@ libext4_objs := ${pf4_objs}
 @ENABLE_STATIC_TRUE@ libext6_objs := ${pf6_objs}
-@ENABLE_STATIC_FALSE@ targets += ${pfx_solibs} ${pfb_solibs} ${pf4_solibs} ${pf6_solibs}
-@ENABLE_STATIC_FALSE@ targets_install += ${pfx_solibs} ${pfb_solibs} ${pf4_solibs} ${pf6_solibs}
+@ENABLE_STATIC_FALSE@ targets += ${pfx_solibs} ${pfb_solibs} ${pf4_solibs} ${pf6_solibs} ${pfa_solibs}
+@ENABLE_STATIC_FALSE@ targets_install += ${pfx_solibs} ${pfb_solibs} ${pf4_solibs} ${pf6_solibs} ${pfa_solibs}
 
 .SECONDARY:
 
@@ -80,7 +85,7 @@ install: ${targets_install}
 	if test -n "${targets_install}"; then install -pm0755 $^ "${DESTDIR}${xtlibdir}/"; fi;
 
 clean:
-	rm -f *.o *.oo *.so *.a {matches,targets}.man initext.c initext4.c initext6.c initextb.c;
+	rm -f *.o *.oo *.so *.a {matches,targets}.man initext.c initext4.c initext6.c initextb.c initexta.c;
 	rm -f .*.d .*.dd;
 
 distclean: clean
@@ -126,6 +131,9 @@ libext.a: initext.o ${libext_objs}
 libext_ebt.a: initextb.o ${libext_ebt_objs}
 	${AM_VERBOSE_AR} ${AR} crs $@ $^;
 
+libext_arpt.a: initexta.o ${libext_arpt_objs}
+	${AM_VERBOSE_AR} ${AR} crs $@ $^;
+
 libext4.a: initext4.o ${libext4_objs}
 	${AM_VERBOSE_AR} ${AR} crs $@ $^;
 
@@ -134,6 +142,7 @@ libext6.a: initext6.o ${libext6_objs}
 
 initext_func  := $(addprefix xt_,${pfx_build_mod})
 initextb_func := $(addprefix ebt_,${pfb_build_mod})
+initexta_func := $(addprefix arpt_,${pfa_build_mod})
 initext4_func := $(addprefix ipt_,${pf4_build_mod})
 initext6_func := $(addprefix ip6t_,${pf6_build_mod})
 
@@ -147,6 +156,11 @@ initext6_func := $(addprefix ip6t_,${pf6_build_mod})
 	cmp -s $@ $@.tmp || mv $@.tmp $@; \
 	rm -f $@.tmp;
 
+.initexta.dd: FORCE
+	@echo "${initexta_func}" >$@.tmp; \
+	cmp -s $@ $@.tmp || mv $@.tmp $@; \
+	rm -f $@.tmp;
+
 .initext4.dd: FORCE
 	@echo "${initext4_func}" >$@.tmp; \
 	cmp -s $@ $@.tmp || mv $@.tmp $@; \
@@ -189,6 +203,22 @@ initextb.c: .initextb.dd
 	echo "}" >>$@; \
 	);
 
+initexta.c: .initexta.dd
+	${AM_VERBOSE_GEN}
+	@( \
+	echo "" >$@; \
+	for i in ${initexta_func}; do \
+		echo "extern void lib$${i}_init(void);" >>$@; \
+	done; \
+	echo "void init_extensionsa(void);" >>$@; \
+	echo "void init_extensionsa(void)" >>$@; \
+	echo "{" >>$@; \
+	for i in ${initexta_func}; do \
+		echo  " ""lib$${i}_init();" >>$@; \
+	done; \
+	echo "}" >>$@; \
+	);
+
 initext4.c: .initext4.dd
 	${AM_VERBOSE_GEN}
 	@( \
@@ -249,8 +279,8 @@ man_run    = \
 		fi; \
 	done >$@;
 
-matches.man: .initext.dd .initextb.dd .initext4.dd .initext6.dd $(wildcard ${srcdir}/lib*.man)
-	$(call man_run,$(call ex_matches,${pfx_build_mod} ${pfb_build_mod} ${pf4_build_mod} ${pf6_build_mod} ${pfx_symlinks}))
+matches.man: .initext.dd .initextb.dd .initexta.dd .initext4.dd .initext6.dd $(wildcard ${srcdir}/lib*.man)
+	$(call man_run,$(call ex_matches,${pfx_build_mod} ${pfb_build_mod} ${pfa_build_mod} ${pf4_build_mod} ${pf6_build_mod} ${pfx_symlinks}))
 
-targets.man: .initext.dd .initext4.dd .initext6.dd $(wildcard ${srcdir}/lib*.man)
-	$(call man_run,$(call ex_targets,${pfx_build_mod} ${pfb_build_mod} ${pf4_build_mod} ${pf6_build_mod} ${pfx_symlinks}))
+targets.man: .initext.dd .initextb.dd .initexta.dd .initext4.dd .initext6.dd $(wildcard ${srcdir}/lib*.man)
+	$(call man_run,$(call ex_targets,${pfx_build_mod} ${pfb_build_mod} ${pfa_build_mod} ${pf4_build_mod} ${pf6_build_mod} ${pfx_symlinks}))