Imported Upstream version 5.3.0

6 files changed, 1330 insertions, 0 deletions

diff --git a/src/libcharon/plugins/attr/Makefile.am b/src/libcharon/plugins/attr/Makefile.am
new file mode 100644
index 000000000..6bc7e77d8
--- /dev/null
+++ b/src/libcharon/plugins/attr/Makefile.am
@@ -0,0 +1,19 @@
+AM_CPPFLAGS = \
+	-I$(top_srcdir)/src/libstrongswan \
+	-I$(top_srcdir)/src/libhydra \
+	-I$(top_srcdir)/src/libcharon
+
+AM_CFLAGS = \
+	$(PLUGIN_CFLAGS)
+
+if MONOLITHIC
+noinst_LTLIBRARIES = libstrongswan-attr.la
+else
+plugin_LTLIBRARIES = libstrongswan-attr.la
+endif
+
+libstrongswan_attr_la_SOURCES = \
+	attr_plugin.h attr_plugin.c \
+	attr_provider.h attr_provider.c
+
+libstrongswan_attr_la_LDFLAGS = -module -avoid-version
diff --git a/src/libcharon/plugins/attr/Makefile.in b/src/libcharon/plugins/attr/Makefile.in
new file mode 100644
index 000000000..486b3c0b0
--- /dev/null
+++ b/src/libcharon/plugins/attr/Makefile.in
@@ -0,0 +1,777 @@
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+# with or without modifications, as long as this notice is preserved.
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+	attr_plugin.h attr_plugin.c \
+	attr_provider.h attr_provider.c
+
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+	list2=; for p in $$list; do \
+	  if test -f $$p; then \
+	    list2="$$list2 $$p"; \
+	  else :; fi; \
+	done; \
+	test -z "$$list2" || { \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(plugindir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(plugindir)" || exit 1; \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 '$(DESTDIR)$(plugindir)'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 "$(DESTDIR)$(plugindir)"; \
+	}
+
+uninstall-pluginLTLIBRARIES:
+	@$(NORMAL_UNINSTALL)
+	@list='$(plugin_LTLIBRARIES)'; test -n "$(plugindir)" || list=; \
+	for p in $$list; do \
+	  $(am__strip_dir) \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f '$(DESTDIR)$(plugindir)/$$f'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f "$(DESTDIR)$(plugindir)/$$f"; \
+	done
+
+clean-pluginLTLIBRARIES:
+	-test -z "$(plugin_LTLIBRARIES)" || rm -f $(plugin_LTLIBRARIES)
+	@list='$(plugin_LTLIBRARIES)'; \
+	locs=`for p in $$list; do echo $$p; done | \
+	      sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
+	      sort -u`; \
+	test -z "$$locs" || { \
+	  echo rm -f $${locs}; \
+	  rm -f $${locs}; \
+	}
+
+libstrongswan-attr.la: $(libstrongswan_attr_la_OBJECTS) $(libstrongswan_attr_la_DEPENDENCIES) $(EXTRA_libstrongswan_attr_la_DEPENDENCIES) 
+	$(AM_V_CCLD)$(libstrongswan_attr_la_LINK) $(am_libstrongswan_attr_la_rpath) $(libstrongswan_attr_la_OBJECTS) $(libstrongswan_attr_la_LIBADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/attr_plugin.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/attr_provider.Plo@am__quote@
+
+.c.o:
+@am__fastdepCC_TRUE@	$(AM_V_CC)depbase=`echo $@ | sed 's|[^/]*$$|$(DEPDIR)/&|;s|\.o$$||'`;\
+@am__fastdepCC_TRUE@	$(COMPILE) -MT $@ -MD -MP -MF $$depbase.Tpo -c -o $@ $< &&\
+@am__fastdepCC_TRUE@	$(am__mv) $$depbase.Tpo $$depbase.Po
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+
+.c.obj:
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+@am__fastdepCC_TRUE@	$(COMPILE) -MT $@ -MD -MP -MF $$depbase.Tpo -c -o $@ `$(CYGPATH_W) '$<'` &&\
+@am__fastdepCC_TRUE@	$(am__mv) $$depbase.Tpo $$depbase.Po
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+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(COMPILE) -c -o $@ `$(CYGPATH_W) '$<'`
+
+.c.lo:
+@am__fastdepCC_TRUE@	$(AM_V_CC)depbase=`echo $@ | sed 's|[^/]*$$|$(DEPDIR)/&|;s|\.lo$$||'`;\
+@am__fastdepCC_TRUE@	$(LTCOMPILE) -MT $@ -MD -MP -MF $$depbase.Tpo -c -o $@ $< &&\
+@am__fastdepCC_TRUE@	$(am__mv) $$depbase.Tpo $$depbase.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LTCOMPILE) -c -o $@ $<
+
+mostlyclean-libtool:
+	-rm -f *.lo
+
+clean-libtool:
+	-rm -rf .libs _libs
+
+ID: $(am__tagged_files)
+	$(am__define_uniq_tagged_files); mkid -fID $$unique
+tags: tags-am
+TAGS: tags
+
+tags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	set x; \
+	here=`pwd`; \
+	$(am__define_uniq_tagged_files); \
+	shift; \
+	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  if test $$# -gt 0; then \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      "$$@" $$unique; \
+	  else \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
+ctags: ctags-am
+
+CTAGS: ctags
+ctags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	$(am__define_uniq_tagged_files); \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+cscopelist: cscopelist-am
+
+cscopelist-am: $(am__tagged_files)
+	list='$(am__tagged_files)'; \
+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+	  *) sdir=$(subdir)/$(srcdir) ;; \
+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(LTLIBRARIES)
+installdirs:
+	for dir in "$(DESTDIR)$(plugindir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libtool clean-noinstLTLIBRARIES \
+	clean-pluginLTLIBRARIES mostlyclean-am
+
+distclean: distclean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-pluginLTLIBRARIES
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
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+install-html: install-html-am
+
+install-html-am:
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+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
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+pdf: pdf-am
+
+pdf-am:
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+ps: ps-am
+
+ps-am:
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+uninstall-am: uninstall-pluginLTLIBRARIES
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+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS TAGS all all-am check check-am clean clean-generic \
+	clean-libtool clean-noinstLTLIBRARIES clean-pluginLTLIBRARIES \
+	cscopelist-am ctags ctags-am distclean distclean-compile \
+	distclean-generic distclean-libtool distclean-tags distdir dvi \
+	dvi-am html html-am info info-am install install-am \
+	install-data install-data-am install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man install-pdf \
+	install-pdf-am install-pluginLTLIBRARIES install-ps \
+	install-ps-am install-strip installcheck installcheck-am \
+	installdirs maintainer-clean maintainer-clean-generic \
+	mostlyclean mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \
+	uninstall-am uninstall-pluginLTLIBRARIES
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/libcharon/plugins/attr/attr_plugin.c b/src/libcharon/plugins/attr/attr_plugin.c
new file mode 100644
index 000000000..9b15c3cc9
--- /dev/null
+++ b/src/libcharon/plugins/attr/attr_plugin.c
@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2009 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include "attr_plugin.h"
+#include "attr_provider.h"
+
+#include <daemon.h>
+
+typedef struct private_attr_plugin_t private_attr_plugin_t;
+
+/**
+ * private data of attr plugin
+ */
+struct private_attr_plugin_t {
+
+	/**
+	 * implements plugin interface
+	 */
+	attr_plugin_t public;
+
+	/**
+	 * CFG attributes provider
+	 */
+	attr_provider_t *provider;
+};
+
+METHOD(plugin_t, get_name, char*,
+	private_attr_plugin_t *this)
+{
+	return "attr";
+}
+
+/**
+ * Register provider
+ */
+static bool plugin_cb(private_attr_plugin_t *this,
+					  plugin_feature_t *feature, bool reg, void *cb_data)
+{
+	if (reg)
+	{
+		charon->attributes->add_provider(charon->attributes,
+										 &this->provider->provider);
+	}
+	else
+	{
+		charon->attributes->remove_provider(charon->attributes,
+										    &this->provider->provider);
+	}
+	return TRUE;
+}
+
+METHOD(plugin_t, get_features, int,
+	private_attr_plugin_t *this, plugin_feature_t *features[])
+{
+	static plugin_feature_t f[] = {
+		PLUGIN_CALLBACK((plugin_feature_callback_t)plugin_cb, NULL),
+			PLUGIN_PROVIDE(CUSTOM, "attr"),
+	};
+	*features = f;
+	return countof(f);
+}
+
+METHOD(plugin_t, reload, bool,
+	private_attr_plugin_t *this)
+{
+	this->provider->reload(this->provider);
+	return TRUE;
+}
+
+METHOD(plugin_t, destroy, void,
+	private_attr_plugin_t *this)
+{
+	this->provider->destroy(this->provider);
+	free(this);
+}
+
+/*
+ * see header file
+ */
+plugin_t *attr_plugin_create()
+{
+	private_attr_plugin_t *this;
+
+	INIT(this,
+		.public = {
+			.plugin = {
+				.get_name = _get_name,
+				.get_features = _get_features,
+				.reload = _reload,
+				.destroy = _destroy,
+			},
+		},
+		.provider = attr_provider_create(),
+	);
+
+	return &this->public.plugin;
+}
diff --git a/src/libcharon/plugins/attr/attr_plugin.h b/src/libcharon/plugins/attr/attr_plugin.h
new file mode 100644
index 000000000..0c6eebfa7
--- /dev/null
+++ b/src/libcharon/plugins/attr/attr_plugin.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2009 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+/**
+ * @defgroup attr attr
+ * @ingroup cplugins
+ *
+ * @defgroup attr_plugin attr_plugin
+ * @{ @ingroup attr
+ */
+
+#ifndef ATTR_PLUGIN_H_
+#define ATTR_PLUGIN_H_
+
+#include <plugins/plugin.h>
+
+typedef struct attr_plugin_t attr_plugin_t;
+
+/**
+ * Plugin providing configuration attribute through strongswan.conf.
+ */
+struct attr_plugin_t {
+
+	/**
+	 * implements plugin interface
+	 */
+	plugin_t plugin;
+};
+
+#endif /** ATTR_PLUGIN_H_ @}*/
diff --git a/src/libcharon/plugins/attr/attr_provider.c b/src/libcharon/plugins/attr/attr_provider.c
new file mode 100644
index 000000000..cac0ae4bf
--- /dev/null
+++ b/src/libcharon/plugins/attr/attr_provider.c
@@ -0,0 +1,329 @@
+/*
+ * Copyright (C) 2010 Tobias Brunner
+ * Copyright (C) 2009 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include "attr_provider.h"
+
+#include <time.h>
+
+#include <daemon.h>
+#include <utils/debug.h>
+#include <collections/linked_list.h>
+#include <threading/rwlock.h>
+
+#define SERVER_MAX		2
+
+typedef struct private_attr_provider_t private_attr_provider_t;
+typedef struct attribute_entry_t attribute_entry_t;
+
+/**
+ * private data of attr_provider
+ */
+struct private_attr_provider_t {
+
+	/**
+	 * public functions
+	 */
+	attr_provider_t public;
+
+	/**
+	 * List of attributes, attribute_entry_t
+	 */
+	linked_list_t *attributes;
+
+	/**
+	 * Lock for attribute list
+	 */
+	rwlock_t *lock;
+};
+
+struct attribute_entry_t {
+	/** type of attribute */
+	configuration_attribute_type_t type;
+	/** attribute value */
+	chunk_t value;
+};
+
+/**
+ * Destroy an entry
+ */
+static void attribute_destroy(attribute_entry_t *this)
+{
+	free(this->value.ptr);
+	free(this);
+}
+
+/**
+ * convert enumerator value from attribute_entry
+ */
+static bool attr_enum_filter(void *null, attribute_entry_t **in,
+			configuration_attribute_type_t *type, void* none, chunk_t *value)
+{
+	*type = (*in)->type;
+	*value = (*in)->value;
+	return TRUE;
+}
+
+METHOD(attribute_provider_t, create_attribute_enumerator, enumerator_t*,
+	private_attr_provider_t *this, linked_list_t *pools,
+	ike_sa_t *ike_sa, linked_list_t *vips)
+{
+	if (vips->get_count(vips))
+	{
+		this->lock->read_lock(this->lock);
+		return enumerator_create_filter(
+				this->attributes->create_enumerator(this->attributes),
+				(void*)attr_enum_filter, this->lock, (void*)this->lock->unlock);
+	}
+	return enumerator_create_empty();
+}
+
+METHOD(attr_provider_t, destroy, void,
+	private_attr_provider_t *this)
+{
+	this->attributes->destroy_function(this->attributes,
+									   (void*)attribute_destroy);
+	this->lock->destroy(this->lock);
+	free(this);
+}
+
+/**
+ * Add an attribute entry to the list
+ */
+static void add_legacy_entry(private_attr_provider_t *this, char *key, int nr,
+							 configuration_attribute_type_t type)
+{
+	attribute_entry_t *entry;
+	host_t *host;
+	char *str;
+
+	str = lib->settings->get_str(lib->settings, "%s.%s%d", NULL, lib->ns,
+								 key, nr);
+	if (str)
+	{
+		host = host_create_from_string(str, 0);
+		if (host)
+		{
+			entry = malloc_thing(attribute_entry_t);
+
+			if (host->get_family(host) == AF_INET6)
+			{
+				switch (type)
+				{
+					case INTERNAL_IP4_DNS:
+						type = INTERNAL_IP6_DNS;
+						break;
+					case INTERNAL_IP4_NBNS:
+						type = INTERNAL_IP6_NBNS;
+						break;
+					default:
+						break;
+				}
+			}
+			entry->type = type;
+			entry->value = chunk_clone(host->get_address(host));
+			host->destroy(host);
+			DBG2(DBG_CFG, "loaded legacy entry attribute %N: %#B",
+				 configuration_attribute_type_names, entry->type, &entry->value);
+			this->attributes->insert_last(this->attributes, entry);
+		}
+	}
+}
+
+/**
+ * Key to attribute type mappings, for v4 and v6 attributes
+ */
+typedef struct {
+	char *name;
+	configuration_attribute_type_t v4;
+	configuration_attribute_type_t v6;
+} attribute_type_key_t;
+
+static attribute_type_key_t keys[] = {
+	{"address",			INTERNAL_IP4_ADDRESS,	INTERNAL_IP6_ADDRESS},
+	{"dns",				INTERNAL_IP4_DNS,		INTERNAL_IP6_DNS},
+	{"nbns",			INTERNAL_IP4_NBNS,		INTERNAL_IP6_NBNS},
+	{"dhcp",			INTERNAL_IP4_DHCP,		INTERNAL_IP6_DHCP},
+	{"netmask",			INTERNAL_IP4_NETMASK,	INTERNAL_IP6_NETMASK},
+	{"server",			INTERNAL_IP4_SERVER,	INTERNAL_IP6_SERVER},
+	{"subnet",			INTERNAL_IP4_SUBNET,	INTERNAL_IP6_SUBNET},
+	{"split-include",	UNITY_SPLIT_INCLUDE,	UNITY_SPLIT_INCLUDE},
+	{"split-exclude",	UNITY_LOCAL_LAN,		UNITY_LOCAL_LAN},
+};
+
+/**
+ * Load (numerical) entries from the plugins.attr namespace
+ */
+static void load_entries(private_attr_provider_t *this)
+{
+	enumerator_t *enumerator, *tokens;
+	char *key, *value, *token;
+	int i;
+
+	for (i = 1; i <= SERVER_MAX; i++)
+	{
+		add_legacy_entry(this, "dns", i, INTERNAL_IP4_DNS);
+		add_legacy_entry(this, "nbns", i, INTERNAL_IP4_NBNS);
+	}
+
+	enumerator = lib->settings->create_key_value_enumerator(lib->settings,
+													"%s.plugins.attr", lib->ns);
+	while (enumerator->enumerate(enumerator, &key, &value))
+	{
+		configuration_attribute_type_t type;
+		attribute_type_key_t *mapped = NULL;
+		attribute_entry_t *entry;
+		chunk_t data;
+		host_t *host;
+		char *pos;
+		int i, mask = -1, family;
+
+		if (streq(key, "load"))
+		{
+			continue;
+		}
+		type = atoi(key);
+		if (!type)
+		{
+			for (i = 0; i < countof(keys); i++)
+			{
+				if (streq(key, keys[i].name))
+				{
+					mapped = &keys[i];
+					break;
+				}
+			}
+			if (!mapped)
+			{
+				DBG1(DBG_CFG, "mapping attribute type %s failed", key);
+				continue;
+			}
+		}
+		tokens = enumerator_create_token(value, ",", " ");
+		while (tokens->enumerate(tokens, &token))
+		{
+			pos = strchr(token, '/');
+			if (pos)
+			{
+				*(pos++) = '\0';
+				mask = atoi(pos);
+			}
+			host = host_create_from_string(token, 0);
+			if (!host)
+			{
+				if (mapped)
+				{
+					DBG1(DBG_CFG, "invalid host in key %s: %s", key, token);
+					continue;
+				}
+				/* store numeric attributes that are no IP addresses as strings */
+				data = chunk_clone(chunk_from_str(token));
+			}
+			else
+			{
+				family = host->get_family(host);
+				if (mask == -1)
+				{
+					data = chunk_clone(host->get_address(host));
+				}
+				else
+				{
+					if (family == AF_INET)
+					{	/* IPv4 attributes contain a subnet mask */
+						u_int32_t netmask = 0;
+
+						if (mask)
+						{	/* shifting u_int32_t by 32 or more is undefined */
+							mask = 32 - mask;
+							netmask = htonl((0xFFFFFFFF >> mask) << mask);
+						}
+						data = chunk_cat("cc", host->get_address(host),
+										 chunk_from_thing(netmask));
+					}
+					else
+					{	/* IPv6 addresses the prefix only */
+						data = chunk_cat("cc", host->get_address(host),
+										 chunk_from_chars(mask));
+					}
+				}
+				host->destroy(host);
+				if (mapped)
+				{
+					switch (family)
+					{
+						case AF_INET:
+							type = mapped->v4;
+							break;
+						case AF_INET6:
+							type = mapped->v6;
+							break;
+					}
+				}
+			}
+			INIT(entry,
+				.type = type,
+				.value = data,
+			);
+			DBG2(DBG_CFG, "loaded attribute %N: %#B",
+				 configuration_attribute_type_names, entry->type, &entry->value);
+			this->attributes->insert_last(this->attributes, entry);
+		}
+		tokens->destroy(tokens);
+	}
+	enumerator->destroy(enumerator);
+}
+
+METHOD(attr_provider_t, reload, void,
+	private_attr_provider_t *this)
+{
+	this->lock->write_lock(this->lock);
+
+	this->attributes->destroy_function(this->attributes, (void*)attribute_destroy);
+	this->attributes = linked_list_create();
+
+	load_entries(this);
+
+	DBG1(DBG_CFG, "loaded %d entr%s for attr plugin configuration",
+		 this->attributes->get_count(this->attributes),
+		 this->attributes->get_count(this->attributes) == 1 ? "y" : "ies");
+
+	this->lock->unlock(this->lock);
+}
+
+/*
+ * see header file
+ */
+attr_provider_t *attr_provider_create(database_t *db)
+{
+	private_attr_provider_t *this;
+
+	INIT(this,
+		.public = {
+			.provider = {
+				.acquire_address = (void*)return_null,
+				.release_address = (void*)return_false,
+				.create_attribute_enumerator = _create_attribute_enumerator,
+			},
+			.reload = _reload,
+			.destroy = _destroy,
+		},
+		.attributes = linked_list_create(),
+		.lock = rwlock_create(RWLOCK_TYPE_DEFAULT),
+	);
+
+	load_entries(this);
+
+	return &this->public;
+}
diff --git a/src/libcharon/plugins/attr/attr_provider.h b/src/libcharon/plugins/attr/attr_provider.h
new file mode 100644
index 000000000..17db30408
--- /dev/null
+++ b/src/libcharon/plugins/attr/attr_provider.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2009 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+/**
+ * @defgroup attr_provider attr_provider
+ * @{ @ingroup attr
+ */
+
+#ifndef ATTR_PROVIDER_H_
+#define ATTR_PROVIDER_H_
+
+#include <attributes/attribute_provider.h>
+
+typedef struct attr_provider_t attr_provider_t;
+
+/**
+ * Provide configuration attributes through static strongswan.conf definition.
+ */
+struct attr_provider_t {
+
+	/**
+	 * Implements attribute provider interface
+	 */
+	attribute_provider_t provider;
+
+	/**
+	 * Reload configuration from strongswan.conf.
+	 */
+	void (*reload)(attr_provider_t *this);
+
+	/**
+	 * Destroy a attr_provider instance.
+	 */
+	void (*destroy)(attr_provider_t *this);
+};
+
+/**
+ * Create a attr_provider instance.
+ */
+attr_provider_t *attr_provider_create();
+
+#endif /** ATTR_PROVIDER @}*/