[svn-upgrade] Integrating new upstream version, strongswan (4.2.9)

6 files changed, 998 insertions, 0 deletions

diff --git a/src/charon/plugins/updown/Makefile.am b/src/charon/plugins/updown/Makefile.am
new file mode 100644
index 000000000..de60d9fbf
--- /dev/null
+++ b/src/charon/plugins/updown/Makefile.am
@@ -0,0 +1,12 @@
+
+INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/charon
+
+AM_CFLAGS = -rdynamic
+
+plugin_LTLIBRARIES = libstrongswan-updown.la
+libstrongswan_updown_la_SOURCES = \
+  updown_plugin.h updown_plugin.c \
+  updown_listener.h updown_listener.c 
+libstrongswan_updown_la_LDFLAGS = -module
+
+
diff --git a/src/charon/plugins/updown/Makefile.in b/src/charon/plugins/updown/Makefile.in
new file mode 100644
index 000000000..603000a09
--- /dev/null
+++ b/src/charon/plugins/updown/Makefile.in
@@ -0,0 +1,501 @@
+# Makefile.in generated by automake 1.10.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008  Free Software Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
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+
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+	updown_listener.lo
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+AM_CFLAGS = -rdynamic
+plugin_LTLIBRARIES = libstrongswan-updown.la
+libstrongswan_updown_la_SOURCES = \
+  updown_plugin.h updown_plugin.c \
+  updown_listener.h updown_listener.c 
+
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+	cd $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu  src/charon/plugins/updown/Makefile
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+	  test "$$dir" != "$$p" || dir=.; \
+	  echo "rm -f \"$${dir}/so_locations\""; \
+	  rm -f "$${dir}/so_locations"; \
+	done
+libstrongswan-updown.la: $(libstrongswan_updown_la_OBJECTS) $(libstrongswan_updown_la_DEPENDENCIES) 
+	$(libstrongswan_updown_la_LINK) -rpath $(plugindir) $(libstrongswan_updown_la_OBJECTS) $(libstrongswan_updown_la_LIBADD) $(LIBS)
+
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diff --git a/src/charon/plugins/updown/updown_listener.c b/src/charon/plugins/updown/updown_listener.c
new file mode 100644
index 000000000..7dfb874cb
--- /dev/null
+++ b/src/charon/plugins/updown/updown_listener.c
@@ -0,0 +1,320 @@
+/*
+ * Copyright (C) 2008 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.
+ *
+ * $Id$
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+
+#include "updown_listener.h"
+
+#include <daemon.h>
+#include <config/child_cfg.h>
+
+typedef struct private_updown_listener_t private_updown_listener_t;
+
+/**
+ * Private data of an updown_listener_t object.
+ */
+struct private_updown_listener_t {
+	
+	/**
+	 * Public updown_listener_t interface.
+	 */
+	updown_listener_t public;
+	
+	/**
+	 * List of cached interface names
+	 */
+	linked_list_t *iface_cache;
+};
+
+typedef struct cache_entry_t cache_entry_t;
+
+/**
+ * Cache line in the interface name cache.
+ */
+struct cache_entry_t {
+	/** requid of the CHILD_SA */
+	u_int32_t reqid;
+	/** cached interface name */
+	char *iface;
+};
+
+/**
+ * Insert an interface name to the cache
+ */
+static void cache_iface(private_updown_listener_t *this, u_int32_t reqid,
+						char *iface)
+{
+	cache_entry_t *entry = malloc_thing(cache_entry_t);
+	
+	entry->reqid = reqid;
+	entry->iface = strdup(iface);
+	
+	this->iface_cache->insert_first(this->iface_cache, entry);
+}
+
+/**
+ * Remove a cached interface name and return it.
+ */
+static char* uncache_iface(private_updown_listener_t *this, u_int32_t reqid)
+{
+	enumerator_t *enumerator;
+	cache_entry_t *entry;
+	char *iface = NULL;
+	
+	enumerator = this->iface_cache->create_enumerator(this->iface_cache);
+	while (enumerator->enumerate(enumerator, &entry))
+	{
+		if (entry->reqid == reqid)
+		{
+			this->iface_cache->remove_at(this->iface_cache, enumerator);
+			iface = entry->iface;
+			free(entry);
+			break;
+		}
+	}
+	enumerator->destroy(enumerator);
+	return iface;
+}
+
+/**
+ * Run the up/down script
+ */
+static void updown(private_updown_listener_t *this, ike_sa_t *ike_sa,
+				   child_sa_t *child_sa, bool up)
+{
+	traffic_selector_t *my_ts, *other_ts;
+	enumerator_t *enumerator;
+	child_cfg_t *config;
+	host_t *vip, *me, *other;
+	char *script;
+	
+	config = child_sa->get_config(child_sa);
+	vip = ike_sa->get_virtual_ip(ike_sa, TRUE);
+	script = config->get_updown(config);
+	me = ike_sa->get_my_host(ike_sa);
+	other = ike_sa->get_other_host(ike_sa);
+	
+	if (script == NULL)
+	{
+		return;
+	}
+	
+	enumerator = child_sa->create_policy_enumerator(child_sa);
+	while (enumerator->enumerate(enumerator, &my_ts, &other_ts))
+	{
+		char command[1024];
+		char *my_client, *other_client, *my_client_mask, *other_client_mask;
+		char *pos, *virtual_ip, *iface;
+		FILE *shell;
+
+		/* get subnet/bits from string */
+		if (asprintf(&my_client, "%R", my_ts) < 0)
+		{
+			my_client = NULL;
+		}
+		pos = strchr(my_client, '/');
+		*pos = '\0';
+		my_client_mask = pos + 1;
+		pos = strchr(my_client_mask, '[');
+		if (pos)
+		{
+			*pos = '\0';
+		}
+		if (asprintf(&other_client, "%R", other_ts) < 0)
+		{
+			other_client = NULL;
+		}
+		pos = strchr(other_client, '/');
+		*pos = '\0';
+		other_client_mask = pos + 1;
+		pos = strchr(other_client_mask, '[');
+		if (pos)
+		{
+			*pos = '\0';
+		}
+
+		if (vip)
+		{
+			if (asprintf(&virtual_ip, "PLUTO_MY_SOURCEIP='%H' ", vip) < 0)
+			{
+				virtual_ip = NULL;
+			}
+		}
+		else
+		{
+			if (asprintf(&virtual_ip, "") < 0)
+			{
+				virtual_ip = NULL;
+			}
+		}
+		
+		if (up)
+		{
+			iface = charon->kernel_interface->get_interface(
+												charon->kernel_interface, me);
+			if (iface)
+			{
+				cache_iface(this, child_sa->get_reqid(child_sa), iface);
+			}
+		}
+		else
+		{
+			iface = uncache_iface(this, child_sa->get_reqid(child_sa));
+		}
+		
+		/* build the command with all env variables.
+		 * TODO: PLUTO_PEER_CA and PLUTO_NEXT_HOP are currently missing
+		 */
+		snprintf(command, sizeof(command),
+				 "2>&1 "
+				"PLUTO_VERSION='1.1' "
+				"PLUTO_VERB='%s%s%s' "
+				"PLUTO_CONNECTION='%s' "
+				"PLUTO_INTERFACE='%s' "
+				"PLUTO_REQID='%u' "
+				"PLUTO_ME='%H' "
+				"PLUTO_MY_ID='%D' "
+				"PLUTO_MY_CLIENT='%s/%s' "
+				"PLUTO_MY_CLIENT_NET='%s' "
+				"PLUTO_MY_CLIENT_MASK='%s' "
+				"PLUTO_MY_PORT='%u' "
+				"PLUTO_MY_PROTOCOL='%u' "
+				"PLUTO_PEER='%H' "
+				"PLUTO_PEER_ID='%D' "
+				"PLUTO_PEER_CLIENT='%s/%s' "
+				"PLUTO_PEER_CLIENT_NET='%s' "
+				"PLUTO_PEER_CLIENT_MASK='%s' "
+				"PLUTO_PEER_PORT='%u' "
+				"PLUTO_PEER_PROTOCOL='%u' "
+				"%s"
+				"%s"
+				"%s",
+				 up ? "up" : "down",
+				 my_ts->is_host(my_ts, me) ? "-host" : "-client",
+				 me->get_family(me) == AF_INET ? "" : "-v6",
+				 config->get_name(config),
+				 iface ? iface : "unknown",
+				 child_sa->get_reqid(child_sa),
+				 me, ike_sa->get_my_id(ike_sa),
+				 my_client, my_client_mask,
+				 my_client, my_client_mask,
+				 my_ts->get_from_port(my_ts),
+				 my_ts->get_protocol(my_ts),
+				 other, ike_sa->get_other_id(ike_sa),
+				 other_client, other_client_mask,
+				 other_client, other_client_mask,
+				 other_ts->get_from_port(other_ts),
+				 other_ts->get_protocol(other_ts),
+				 virtual_ip,
+				 config->get_hostaccess(config) ? "PLUTO_HOST_ACCESS='1' " : "",
+				 script);
+		free(my_client);
+		free(other_client);
+		free(virtual_ip);
+		free(iface);
+		
+		DBG3(DBG_CHD, "running updown script: %s", command);
+		shell = popen(command, "r");
+
+		if (shell == NULL)
+		{
+			DBG1(DBG_CHD, "could not execute updown script '%s'", script);
+			return;
+		}
+		
+		while (TRUE)
+		{
+			char resp[128];
+			
+			if (fgets(resp, sizeof(resp), shell) == NULL)
+			{
+				if (ferror(shell))
+				{
+					DBG1(DBG_CHD, "error reading output from updown script");
+					return;
+				}
+				else
+				{
+					break;
+				}
+			}
+			else
+			{
+				char *e = resp + strlen(resp);
+				if (e > resp && e[-1] == '\n')
+				{	/* trim trailing '\n' */
+					e[-1] = '\0';
+				}
+				DBG1(DBG_CHD, "updown: %s", resp);
+			}
+		}
+		pclose(shell);
+	}
+	enumerator->destroy(enumerator);
+}
+
+/**
+ * Listener implementation
+ */
+static bool child_state_change(private_updown_listener_t *this, ike_sa_t *ike_sa,
+							   child_sa_t *child_sa, child_sa_state_t state)
+{
+	child_sa_state_t old;
+	
+	if (ike_sa)
+	{
+		old = child_sa->get_state(child_sa);
+		
+		if ((old == CHILD_INSTALLED && state != CHILD_REKEYING ) ||
+			(old == CHILD_DELETING && state == CHILD_DESTROYING))
+		{
+			updown(this, ike_sa, child_sa, FALSE);
+		}
+		else if (state == CHILD_INSTALLED)
+		{
+			updown(this, ike_sa, child_sa, TRUE);
+		}
+	}
+	return TRUE;
+}
+
+/**
+ * Implementation of updown_listener_t.destroy.
+ */
+static void destroy(private_updown_listener_t *this)
+{
+	this->iface_cache->destroy(this->iface_cache);
+	free(this);
+}
+
+/**
+ * See header
+ */
+updown_listener_t *updown_listener_create()
+{
+	private_updown_listener_t *this = malloc_thing(private_updown_listener_t);
+	
+	memset(&this->public.listener, 0, sizeof(listener_t));
+	this->public.listener.child_state_change = (void*)child_state_change;
+	this->public.destroy = (void(*)(updown_listener_t*))destroy;
+	
+	this->iface_cache = linked_list_create();
+	
+	return &this->public;
+}
+
diff --git a/src/charon/plugins/updown/updown_listener.h b/src/charon/plugins/updown/updown_listener.h
new file mode 100644
index 000000000..569d5817e
--- /dev/null
+++ b/src/charon/plugins/updown/updown_listener.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2008 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.
+ *
+ * $Id$
+ */
+
+/**
+ * @defgroup updown_listener updown_listener
+ * @{ @ingroup updown
+ */
+
+#ifndef UPDOWN_LISTENER_H_
+#define UPDOWN_LISTENER_H_
+
+#include <bus/bus.h>
+
+typedef struct updown_listener_t updown_listener_t;
+
+/**
+ * Listener which invokes the scripts on CHILD_SA up/down.
+ */
+struct updown_listener_t {
+	
+	/**
+	 * Implements listener_t.
+	 */
+	listener_t listener;
+	
+	/**
+	 * Destroy a updown_listener_t.
+	 */
+	void (*destroy)(updown_listener_t *this);
+};
+
+/**
+ * Create a updown_listener instance.
+ */
+updown_listener_t *updown_listener_create();
+
+#endif /* UPDOWN_LISTENER_ @}*/
diff --git a/src/charon/plugins/updown/updown_plugin.c b/src/charon/plugins/updown/updown_plugin.c
new file mode 100644
index 000000000..2e5884222
--- /dev/null
+++ b/src/charon/plugins/updown/updown_plugin.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2008 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.
+ *
+ * $Id$
+ */
+
+#include "updown_plugin.h"
+#include "updown_listener.h"
+
+#include <daemon.h>
+
+typedef struct private_updown_plugin_t private_updown_plugin_t;
+
+/**
+ * private data of updown plugin
+ */
+struct private_updown_plugin_t {
+
+	/**
+	 * implements plugin interface
+	 */
+	updown_plugin_t public;
+	
+	/**
+	 * Listener interface, listens to CHILD_SA state changes
+	 */
+	updown_listener_t *listener;
+};
+
+/**
+ * Implementation of plugin_t.destroy
+ */
+static void destroy(private_updown_plugin_t *this)
+{
+	charon->bus->remove_listener(charon->bus, &this->listener->listener);
+	this->listener->destroy(this->listener);
+	free(this);
+}
+
+/*
+ * see header file
+ */
+plugin_t *plugin_create()
+{
+	private_updown_plugin_t *this = malloc_thing(private_updown_plugin_t);
+	
+	this->public.plugin.destroy = (void(*)(plugin_t*))destroy;
+	
+	this->listener = updown_listener_create();
+	charon->bus->add_listener(charon->bus, &this->listener->listener);
+	
+	return &this->public.plugin;
+}
+
diff --git a/src/charon/plugins/updown/updown_plugin.h b/src/charon/plugins/updown/updown_plugin.h
new file mode 100644
index 000000000..4d0a930c2
--- /dev/null
+++ b/src/charon/plugins/updown/updown_plugin.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2008 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.
+ *
+ * $Id$
+ */
+
+/**
+ * @defgroup updown updown
+ * @ingroup cplugins
+ *
+ * @defgroup updown_plugin updown_plugin
+ * @{ @ingroup updown
+ */
+
+#ifndef UPDOWN_PLUGIN_H_
+#define UPDOWN_PLUGIN_H_
+
+#include <plugins/plugin.h>
+
+typedef struct updown_plugin_t updown_plugin_t;
+
+/**
+ * Updown firewall script invocation plugin, compatible to pluto ones.
+ */
+struct updown_plugin_t {
+
+	/**
+	 * implements plugin interface
+	 */
+	plugin_t plugin;
+};
+
+/**
+ * Create a updown_plugin instance.
+ */
+plugin_t *plugin_create();
+
+#endif /* UPDOWN_PLUGIN_H_ @}*/