Import upstream release 5.2.1

6 files changed, 1259 insertions, 0 deletions

diff --git a/src/libcharon/plugins/ext_auth/Makefile.am b/src/libcharon/plugins/ext_auth/Makefile.am
new file mode 100644
index 000000000..d51ea8881
--- /dev/null
+++ b/src/libcharon/plugins/ext_auth/Makefile.am
@@ -0,0 +1,18 @@
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+	-I$(top_srcdir)/src/libhydra \
+	-I$(top_srcdir)/src/libcharon
+
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+endif
+
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+	ext_auth_listener.h ext_auth_listener.c
+
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diff --git a/src/libcharon/plugins/ext_auth/Makefile.in b/src/libcharon/plugins/ext_auth/Makefile.in
new file mode 100644
index 000000000..a1b47dd33
--- /dev/null
+++ b/src/libcharon/plugins/ext_auth/Makefile.in
@@ -0,0 +1,774 @@
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+	    list2="$$list2 $$p"; \
+	  else :; fi; \
+	done; \
+	test -z "$$list2" || { \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(plugindir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(plugindir)" || exit 1; \
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+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$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 $${locs}; \
+	}
+
+libstrongswan-ext-auth.la: $(libstrongswan_ext_auth_la_OBJECTS) $(libstrongswan_ext_auth_la_DEPENDENCIES) $(EXTRA_libstrongswan_ext_auth_la_DEPENDENCIES) 
+	$(AM_V_CCLD)$(libstrongswan_ext_auth_la_LINK) $(am_libstrongswan_ext_auth_la_rpath) $(libstrongswan_ext_auth_la_OBJECTS) $(libstrongswan_ext_auth_la_LIBADD) $(LIBS)
+
+mostlyclean-compile:
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+
+distclean-compile:
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+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ext_auth_listener.Plo@am__quote@
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+
+.c.lo:
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+@am__fastdepCC_TRUE@	$(am__mv) $$depbase.Tpo $$depbase.Plo
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+	-rm -rf .libs _libs
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+	$(am__define_uniq_tagged_files); mkid -fID $$unique
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+	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
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+	$(am__define_uniq_tagged_files); \
+	test -z "$(CTAGS_ARGS)$$unique" \
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+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
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+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
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+	esac; \
+	for i in $$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 \
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+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
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+all-am: Makefile $(LTLIBRARIES)
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+	  $(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
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+	clean-pluginLTLIBRARIES mostlyclean-am
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+	-rm -f Makefile
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+# 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/ext_auth/ext_auth_listener.c b/src/libcharon/plugins/ext_auth/ext_auth_listener.c
new file mode 100644
index 000000000..06cec20d7
--- /dev/null
+++ b/src/libcharon/plugins/ext_auth/ext_auth_listener.c
@@ -0,0 +1,203 @@
+/*
+ * Copyright (c) 2014 Vyronas Tsingaras (vtsingaras@it.auth.gr)
+ * Copyright (C) 2014 Martin Willi
+ * Copyright (C) 2014 revosec AG
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/* for vasprintf() */
+#define _GNU_SOURCE
+#include "ext_auth_listener.h"
+
+#include <daemon.h>
+#include <utils/process.h>
+
+#include <stdio.h>
+#include <unistd.h>
+
+typedef struct private_ext_auth_listener_t private_ext_auth_listener_t;
+
+/**
+ * Private data of an ext_auth_listener_t object.
+ */
+struct private_ext_auth_listener_t {
+
+	/**
+	 * Public ext_auth_listener_listener_t interface.
+	 */
+	ext_auth_listener_t public;
+
+	/**
+	 * Path to authorization program
+	 */
+	char *script;
+};
+
+/**
+ * Allocate and push a format string to the environment
+ */
+static bool push_env(char *envp[], u_int count, char *fmt, ...)
+{
+	int i = 0;
+	char *str;
+	va_list args;
+
+	while (envp[i])
+	{
+		if (++i + 1 >= count)
+		{
+			return FALSE;
+		}
+	}
+	va_start(args, fmt);
+	if (vasprintf(&str, fmt, args) >= 0)
+	{
+		envp[i] = str;
+	}
+	va_end(args);
+	return envp[i] != NULL;
+}
+
+/**
+ * Free all allocated environment strings
+ */
+static void free_env(char *envp[])
+{
+	int i;
+
+	for (i = 0; envp[i]; i++)
+	{
+		free(envp[i]);
+	}
+}
+
+METHOD(listener_t, authorize, bool,
+	private_ext_auth_listener_t *this, ike_sa_t *ike_sa,
+	bool final, bool *success)
+{
+	if (final)
+	{
+		FILE *shell;
+		process_t *process;
+		char *envp[32] = {};
+		int out, retval;
+
+		*success = FALSE;
+
+		push_env(envp, countof(envp), "IKE_UNIQUE_ID=%u",
+				 ike_sa->get_unique_id(ike_sa));
+		push_env(envp, countof(envp), "IKE_NAME=%s",
+				 ike_sa->get_name(ike_sa));
+
+		push_env(envp, countof(envp), "IKE_LOCAL_HOST=%H",
+				 ike_sa->get_my_host(ike_sa));
+		push_env(envp, countof(envp), "IKE_REMOTE_HOST=%H",
+				 ike_sa->get_other_host(ike_sa));
+
+		push_env(envp, countof(envp), "IKE_LOCAL_ID=%Y",
+				 ike_sa->get_my_id(ike_sa));
+		push_env(envp, countof(envp), "IKE_REMOTE_ID=%Y",
+				 ike_sa->get_other_id(ike_sa));
+
+		if (ike_sa->has_condition(ike_sa, COND_EAP_AUTHENTICATED) ||
+			ike_sa->has_condition(ike_sa, COND_XAUTH_AUTHENTICATED))
+		{
+			push_env(envp, countof(envp), "IKE_REMOTE_EAP_ID=%Y",
+					 ike_sa->get_other_eap_id(ike_sa));
+		}
+
+		process = process_start_shell(envp, NULL, &out, NULL,
+									  "2>&1 %s", this->script);
+		if (process)
+		{
+			shell = fdopen(out, "r");
+			if (shell)
+			{
+				while (TRUE)
+				{
+					char resp[128], *e;
+
+					if (fgets(resp, sizeof(resp), shell) == NULL)
+					{
+						if (ferror(shell))
+						{
+							DBG1(DBG_CFG, "error reading from ext-auth script");
+						}
+						break;
+					}
+					else
+					{
+						e = resp + strlen(resp);
+						if (e > resp && e[-1] == '\n')
+						{
+							e[-1] = '\0';
+						}
+						DBG1(DBG_CHD, "ext-auth: %s", resp);
+					}
+				}
+				fclose(shell);
+			}
+			else
+			{
+				close(out);
+			}
+			if (process->wait(process, &retval))
+			{
+				if (retval == EXIT_SUCCESS)
+				{
+					*success = TRUE;
+				}
+				else
+				{
+					DBG1(DBG_CFG, "rejecting IKE_SA for ext-auth result: %d",
+						 retval);
+				}
+			}
+		}
+		free_env(envp);
+	}
+	return TRUE;
+}
+
+METHOD(ext_auth_listener_t, destroy, void,
+	private_ext_auth_listener_t *this)
+{
+	free(this);
+}
+
+/**
+ * See header
+ */
+ext_auth_listener_t *ext_auth_listener_create(char *script)
+{
+	private_ext_auth_listener_t *this;
+
+	INIT(this,
+		.public = {
+			.listener = {
+				.authorize = _authorize,
+			},
+			.destroy = _destroy,
+		},
+		.script = script,
+	);
+
+	return &this->public;
+}
diff --git a/src/libcharon/plugins/ext_auth/ext_auth_listener.h b/src/libcharon/plugins/ext_auth/ext_auth_listener.h
new file mode 100644
index 000000000..3fec83066
--- /dev/null
+++ b/src/libcharon/plugins/ext_auth/ext_auth_listener.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2014 Vyronas Tsingaras (vtsingaras@it.auth.gr)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * @defgroup ext_auth_listener ext_auth_listener
+ * @{ @ingroup ext_auth
+ */
+
+#ifndef EXT_AUTH_LISTENER_H_
+#define EXT_AUTH_LISTENER_H_
+
+#include <bus/listeners/listener.h>
+
+typedef struct ext_auth_listener_t ext_auth_listener_t;
+
+/**
+ * Listener using an external script to authorize connection
+ */
+struct ext_auth_listener_t {
+
+	/**
+	 * Implements listener_t interface.
+	 */
+	listener_t listener;
+
+	/**
+	 * Destroy the listener.
+	 */
+	void (*destroy)(ext_auth_listener_t *this);
+};
+
+/**
+ * Create ext_auth_listener instance.
+ *
+ * @param script		path to authorization script
+ * @return				listener instance
+ */
+ext_auth_listener_t *ext_auth_listener_create(char *script);
+
+#endif /** ext_auth_LISTENER_H_ @}*/
diff --git a/src/libcharon/plugins/ext_auth/ext_auth_plugin.c b/src/libcharon/plugins/ext_auth/ext_auth_plugin.c
new file mode 100644
index 000000000..b3698c767
--- /dev/null
+++ b/src/libcharon/plugins/ext_auth/ext_auth_plugin.c
@@ -0,0 +1,156 @@
+/*
+ * Copyright (c) 2014 Vyronas Tsingaras (vtsingaras@it.auth.gr)
+ * Copyright (C) 2014 Martin Willi
+ * Copyright (C) 2014 revosec AG
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "ext_auth_plugin.h"
+#include "ext_auth_listener.h"
+
+#include <daemon.h>
+
+typedef struct private_ext_auth_plugin_t private_ext_auth_plugin_t;
+
+/**
+ * private data of ext_auth plugin
+ */
+struct private_ext_auth_plugin_t {
+
+	/**
+	 * implements plugin interface
+	 */
+	ext_auth_plugin_t public;
+
+	/**
+	 * Listener verifying peers during authorization
+	 */
+	ext_auth_listener_t *listener;
+};
+
+METHOD(plugin_t, get_name, char*,
+	private_ext_auth_plugin_t *this)
+{
+	return "ext-auth";
+}
+
+/**
+ * Create a listener instance, NULL on error
+ */
+static ext_auth_listener_t* create_listener()
+{
+	char *script;
+
+	script = lib->settings->get_str(lib->settings,
+					"%s.plugins.ext-auth.script", NULL, lib->ns);
+	if (!script)
+	{
+		DBG1(DBG_CFG, "no script for ext-auth script defined, disabled");
+		return NULL;
+	}
+	DBG1(DBG_CFG, "using ext-auth script '%s'", script);
+	return ext_auth_listener_create(script);
+}
+
+/**
+ * Register listener
+ */
+static bool plugin_cb(private_ext_auth_plugin_t *this,
+					  plugin_feature_t *feature, bool reg, void *cb_data)
+{
+	if (reg)
+	{
+		this->listener = create_listener();
+		if (!this->listener)
+		{
+			return FALSE;
+		}
+		charon->bus->add_listener(charon->bus, &this->listener->listener);
+	}
+	else
+	{
+		if (this->listener)
+		{
+			charon->bus->remove_listener(charon->bus, &this->listener->listener);
+			this->listener->destroy(this->listener);
+		}
+	}
+	return TRUE;
+}
+
+METHOD(plugin_t, get_features, int,
+	private_ext_auth_plugin_t *this, plugin_feature_t *features[])
+{
+	static plugin_feature_t f[] = {
+		PLUGIN_CALLBACK((plugin_feature_callback_t)plugin_cb, NULL),
+			PLUGIN_PROVIDE(CUSTOM, "ext_auth"),
+	};
+	*features = f;
+	return countof(f);
+}
+
+
+METHOD(plugin_t, reload, bool,
+	private_ext_auth_plugin_t *this)
+{
+	ext_auth_listener_t *listener;
+
+	/* reload new listener overlapped */
+	listener = create_listener();
+	if (listener)
+	{
+		charon->bus->add_listener(charon->bus, &listener->listener);
+	}
+	if (this->listener)
+	{
+		charon->bus->remove_listener(charon->bus, &this->listener->listener);
+		this->listener->destroy(this->listener);
+	}
+	this->listener = listener;
+
+	return TRUE;
+}
+
+METHOD(plugin_t, destroy, void,
+	private_ext_auth_plugin_t *this)
+{
+	free(this);
+}
+
+/**
+ * Plugin constructor
+ */
+plugin_t *ext_auth_plugin_create()
+{
+	private_ext_auth_plugin_t *this;
+
+	INIT(this,
+		.public = {
+			.plugin = {
+				.get_name = _get_name,
+				.get_features = _get_features,
+				.reload = _reload,
+				.destroy = _destroy,
+			},
+		},
+	);
+
+	return &this->public.plugin;
+}
diff --git a/src/libcharon/plugins/ext_auth/ext_auth_plugin.h b/src/libcharon/plugins/ext_auth/ext_auth_plugin.h
new file mode 100644
index 000000000..1288e240c
--- /dev/null
+++ b/src/libcharon/plugins/ext_auth/ext_auth_plugin.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2014 Vyronas Tsingaras (vtsingaras@it.auth.gr)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * @defgroup ext_auth ext_auth
+ * @ingroup cplugins
+ *
+ * @defgroup ext_auth_plugin ext_auth_plugin
+ * @{ @ingroup ext_auth
+ */
+
+#ifndef EXT_AUTH_PLUGIN_H_
+#define EXT_AUTH_PLUGIN_H_
+
+#include <plugins/plugin.h>
+
+typedef struct ext_auth_plugin_t ext_auth_plugin_t;
+
+/**
+ * Plugin using an external script to authorize connections.
+ */
+struct ext_auth_plugin_t {
+
+	/**
+	 * Implements plugin interface.
+	 */
+	plugin_t plugin;
+};
+
+#endif /** EXT_AUTH_PLUGIN_H_ @}*/