New upstream release.

1 files changed, 443 insertions, 0 deletions

diff --git a/src/libcharon/daemon.c b/src/libcharon/daemon.c
new file mode 100644
index 000000000..11c94beb9
--- /dev/null
+++ b/src/libcharon/daemon.c
@@ -0,0 +1,443 @@
+/*
+ * Copyright (C) 2006-2010 Tobias Brunner
+ * Copyright (C) 2005-2009 Martin Willi
+ * Copyright (C) 2006 Daniel Roethlisberger
+ * Copyright (C) 2005 Jan Hutter
+ * 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 <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <time.h>
+#include <errno.h>
+#ifdef CAPABILITIES
+#include <sys/capability.h>
+#endif /* CAPABILITIES */
+
+#include "daemon.h"
+
+#include <library.h>
+#include <selectors/traffic_selector.h>
+#include <config/proposal.h>
+
+#ifndef LOG_AUTHPRIV /* not defined on OpenSolaris */
+#define LOG_AUTHPRIV LOG_AUTH
+#endif
+
+typedef struct private_daemon_t private_daemon_t;
+
+/**
+ * Private additions to daemon_t, contains threads and internal functions.
+ */
+struct private_daemon_t {
+	/**
+	 * Public members of daemon_t.
+	 */
+	daemon_t public;
+
+#ifdef CAPABILITIES
+	/**
+	 * capabilities to keep
+	 */
+	cap_t caps;
+#endif /* CAPABILITIES */
+};
+
+/**
+ * One and only instance of the daemon.
+ */
+daemon_t *charon;
+
+/**
+ * hook in library for debugging messages
+ */
+extern void (*dbg) (debug_t group, level_t level, char *fmt, ...);
+
+/**
+ * we store the previous debug function so we can reset it
+ */
+static void (*dbg_old) (debug_t group, level_t level, char *fmt, ...);
+
+/**
+ * Logging hook for library logs, spreads debug message over bus
+ */
+static void dbg_bus(debug_t group, level_t level, char *fmt, ...)
+{
+	va_list args;
+
+	va_start(args, fmt);
+	charon->bus->vlog(charon->bus, group, level, fmt, args);
+	va_end(args);
+}
+
+/**
+ * Clean up all daemon resources
+ */
+static void destroy(private_daemon_t *this)
+{
+	/* terminate all idle threads */
+	if (this->public.processor)
+	{
+		this->public.processor->set_threads(this->public.processor, 0);
+	}
+	/* close all IKE_SAs */
+	if (this->public.ike_sa_manager)
+	{
+		this->public.ike_sa_manager->flush(this->public.ike_sa_manager);
+	}
+	DESTROY_IF(this->public.receiver);
+	/* unload plugins to release threads */
+	lib->plugins->unload(lib->plugins);
+#ifdef CAPABILITIES
+	cap_free(this->caps);
+#endif /* CAPABILITIES */
+	DESTROY_IF(this->public.traps);
+	DESTROY_IF(this->public.ike_sa_manager);
+	DESTROY_IF(this->public.kernel_interface);
+	DESTROY_IF(this->public.scheduler);
+	DESTROY_IF(this->public.controller);
+	DESTROY_IF(this->public.eap);
+	DESTROY_IF(this->public.sim);
+#ifdef ME
+	DESTROY_IF(this->public.connect_manager);
+	DESTROY_IF(this->public.mediation_manager);
+#endif /* ME */
+	DESTROY_IF(this->public.backends);
+	DESTROY_IF(this->public.credentials);
+	DESTROY_IF(this->public.sender);
+	DESTROY_IF(this->public.socket);
+	/* wait until all threads are gone */
+	DESTROY_IF(this->public.processor);
+
+	/* rehook library logging, shutdown logging */
+	dbg = dbg_old;
+	DESTROY_IF(this->public.bus);
+	this->public.file_loggers->destroy_offset(this->public.file_loggers,
+											offsetof(file_logger_t, destroy));
+	this->public.sys_loggers->destroy_offset(this->public.sys_loggers,
+											offsetof(sys_logger_t, destroy));
+	free(this);
+}
+
+METHOD(daemon_t, keep_cap, void,
+	   private_daemon_t *this, u_int cap)
+{
+#ifdef CAPABILITIES
+	cap_set_flag(this->caps, CAP_EFFECTIVE, 1, &cap, CAP_SET);
+	cap_set_flag(this->caps, CAP_INHERITABLE, 1, &cap, CAP_SET);
+	cap_set_flag(this->caps, CAP_PERMITTED, 1, &cap, CAP_SET);
+#endif /* CAPABILITIES */
+}
+
+METHOD(daemon_t, drop_capabilities, bool,
+	   private_daemon_t *this)
+{
+#ifdef CAPABILITIES
+	if (cap_set_proc(this->caps) != 0)
+	{
+		return FALSE;
+	}
+#endif /* CAPABILITIES */
+	return TRUE;
+}
+
+METHOD(daemon_t, start, void,
+	   private_daemon_t *this)
+{
+	/* start the engine, go multithreaded */
+	charon->processor->set_threads(charon->processor,
+						lib->settings->get_int(lib->settings, "charon.threads",
+											   DEFAULT_THREADS));
+}
+
+/**
+ * Log loaded plugins
+ */
+static void print_plugins()
+{
+	char buf[512], *plugin;
+	int len = 0;
+	enumerator_t *enumerator;
+
+	buf[0] = '\0';
+	enumerator = lib->plugins->create_plugin_enumerator(lib->plugins);
+	while (len < sizeof(buf) && enumerator->enumerate(enumerator, &plugin))
+	{
+		len += snprintf(&buf[len], sizeof(buf)-len, "%s ", plugin);
+	}
+	enumerator->destroy(enumerator);
+	DBG1(DBG_DMN, "loaded plugins: %s", buf);
+}
+
+/**
+ * Initialize logging
+ */
+static void initialize_loggers(private_daemon_t *this, bool use_stderr,
+							   level_t levels[])
+{
+	sys_logger_t *sys_logger;
+	file_logger_t *file_logger;
+	enumerator_t *enumerator;
+	char *facility, *filename;
+	int loggers_defined = 0;
+	debug_t group;
+	level_t  def;
+	bool append;
+	FILE *file;
+
+	/* setup sysloggers */
+	enumerator = lib->settings->create_section_enumerator(lib->settings,
+														  "charon.syslog");
+	while (enumerator->enumerate(enumerator, &facility))
+	{
+		loggers_defined++;
+		if (streq(facility, "daemon"))
+		{
+			sys_logger = sys_logger_create(LOG_DAEMON);
+		}
+		else if (streq(facility, "auth"))
+		{
+			sys_logger = sys_logger_create(LOG_AUTHPRIV);
+		}
+		else
+		{
+			continue;
+		}
+		def = lib->settings->get_int(lib->settings,
+									 "charon.syslog.%s.default", 1, facility);
+		for (group = 0; group < DBG_MAX; group++)
+		{
+			sys_logger->set_level(sys_logger, group,
+				lib->settings->get_int(lib->settings,
+									   "charon.syslog.%s.%N", def,
+									   facility, debug_lower_names, group));
+		}
+		this->public.sys_loggers->insert_last(this->public.sys_loggers,
+											  sys_logger);
+		this->public.bus->add_listener(this->public.bus, &sys_logger->listener);
+	}
+	enumerator->destroy(enumerator);
+
+	/* and file loggers */
+	enumerator = lib->settings->create_section_enumerator(lib->settings,
+														  "charon.filelog");
+	while (enumerator->enumerate(enumerator, &filename))
+	{
+		loggers_defined++;
+		if (streq(filename, "stderr"))
+		{
+			file = stderr;
+		}
+		else if (streq(filename, "stdout"))
+		{
+			file = stdout;
+		}
+		else
+		{
+			append = lib->settings->get_bool(lib->settings,
+									"charon.filelog.%s.append", TRUE, filename);
+			file = fopen(filename, append ? "a" : "w");
+			if (file == NULL)
+			{
+				DBG1(DBG_DMN, "opening file %s for logging failed: %s",
+					 filename, strerror(errno));
+				continue;
+			}
+		}
+		file_logger = file_logger_create(file);
+		def = lib->settings->get_int(lib->settings,
+									 "charon.filelog.%s.default", 1, filename);
+		for (group = 0; group < DBG_MAX; group++)
+		{
+			file_logger->set_level(file_logger, group,
+				lib->settings->get_int(lib->settings,
+									   "charon.filelog.%s.%N", def,
+									   filename, debug_lower_names, group));
+		}
+		this->public.file_loggers->insert_last(this->public.file_loggers,
+											   file_logger);
+		this->public.bus->add_listener(this->public.bus, &file_logger->listener);
+
+	}
+	enumerator->destroy(enumerator);
+
+	/* set up legacy style default loggers provided via command-line */
+	if (!loggers_defined)
+	{
+		/* set up default stdout file_logger */
+		file_logger = file_logger_create(stdout);
+		this->public.bus->add_listener(this->public.bus, &file_logger->listener);
+		this->public.file_loggers->insert_last(this->public.file_loggers,
+											   file_logger);
+		/* set up default daemon sys_logger */
+		sys_logger = sys_logger_create(LOG_DAEMON);
+		this->public.bus->add_listener(this->public.bus, &sys_logger->listener);
+		this->public.sys_loggers->insert_last(this->public.sys_loggers,
+											  sys_logger);
+		for (group = 0; group < DBG_MAX; group++)
+		{
+			sys_logger->set_level(sys_logger, group, levels[group]);
+			if (use_stderr)
+			{
+				file_logger->set_level(file_logger, group, levels[group]);
+			}
+		}
+
+		/* set up default auth sys_logger */
+		sys_logger = sys_logger_create(LOG_AUTHPRIV);
+		this->public.bus->add_listener(this->public.bus, &sys_logger->listener);
+		this->public.sys_loggers->insert_last(this->public.sys_loggers,
+											  sys_logger);
+		sys_logger->set_level(sys_logger, DBG_ANY, LEVEL_AUDIT);
+	}
+}
+
+METHOD(daemon_t, initialize, bool,
+	   private_daemon_t *this, bool syslog, level_t levels[])
+{
+	/* for uncritical pseudo random numbers */
+	srandom(time(NULL) + getpid());
+
+	/* setup bus and it's listeners first to enable log output */
+	this->public.bus = bus_create();
+	/* set up hook to log dbg message in library via charons message bus */
+	dbg_old = dbg;
+	dbg = dbg_bus;
+
+	initialize_loggers(this, !syslog, levels);
+
+	DBG1(DBG_DMN, "Starting IKEv2 charon daemon (strongSwan "VERSION")");
+
+	if (lib->integrity)
+	{
+		DBG1(DBG_DMN, "integrity tests enabled:");
+		DBG1(DBG_DMN, "lib    'libstrongswan': passed file and segment integrity tests");
+		DBG1(DBG_DMN, "lib    'libhydra': passed file and segment integrity tests");
+		DBG1(DBG_DMN, "lib    'libcharon': passed file and segment integrity tests");
+		DBG1(DBG_DMN, "daemon 'charon': passed file integrity test");
+	}
+
+	/* load secrets, ca certificates and crls */
+	this->public.processor = processor_create();
+	this->public.scheduler = scheduler_create();
+	this->public.credentials = credential_manager_create();
+	this->public.controller = controller_create();
+	this->public.eap = eap_manager_create();
+	this->public.sim = sim_manager_create();
+	this->public.backends = backend_manager_create();
+	this->public.kernel_interface = kernel_interface_create();
+	this->public.socket = socket_manager_create();
+	this->public.traps = trap_manager_create();
+
+	/* load plugins, further infrastructure may need it */
+	if (!lib->plugins->load(lib->plugins, NULL,
+			lib->settings->get_str(lib->settings, "charon.load", PLUGINS)))
+	{
+		return FALSE;
+	}
+
+	print_plugins();
+
+	this->public.ike_sa_manager = ike_sa_manager_create();
+	if (this->public.ike_sa_manager == NULL)
+	{
+		return FALSE;
+	}
+	this->public.sender = sender_create();
+	this->public.receiver = receiver_create();
+	if (this->public.receiver == NULL)
+	{
+		return FALSE;
+	}
+
+#ifdef ME
+	this->public.connect_manager = connect_manager_create();
+	if (this->public.connect_manager == NULL)
+	{
+		return FALSE;
+	}
+	this->public.mediation_manager = mediation_manager_create();
+#endif /* ME */
+
+	return TRUE;
+}
+
+/**
+ * Create the daemon.
+ */
+private_daemon_t *daemon_create()
+{
+	private_daemon_t *this;
+
+	INIT(this,
+		.public = {
+			.keep_cap = _keep_cap,
+			.drop_capabilities = _drop_capabilities,
+			.initialize = _initialize,
+			.start = _start,
+			.file_loggers = linked_list_create(),
+			.sys_loggers = linked_list_create(),
+		},
+	);
+
+#ifdef CAPABILITIES
+	this->caps = cap_init();
+	keep_cap(this, CAP_NET_ADMIN);
+	if (lib->leak_detective)
+	{
+		keep_cap(this, CAP_SYS_NICE);
+	}
+#endif /* CAPABILITIES */
+
+	return this;
+}
+
+/**
+ * Described in header.
+ */
+void libcharon_deinit()
+{
+
+	destroy((private_daemon_t*)charon);
+	charon = NULL;
+}
+
+/**
+ * Described in header.
+ */
+bool libcharon_init()
+{
+	private_daemon_t *this;
+
+	this = daemon_create();
+	charon = &this->public;
+
+	lib->printf_hook->add_handler(lib->printf_hook, 'R',
+								  traffic_selector_printf_hook,
+								  PRINTF_HOOK_ARGTYPE_POINTER,
+								  PRINTF_HOOK_ARGTYPE_END);
+	lib->printf_hook->add_handler(lib->printf_hook, 'P',
+								  proposal_printf_hook,
+								  PRINTF_HOOK_ARGTYPE_POINTER,
+								  PRINTF_HOOK_ARGTYPE_END);
+
+	if (lib->integrity &&
+		!lib->integrity->check(lib->integrity, "libcharon", libcharon_init))
+	{
+		dbg(DBG_DMN, 1, "integrity check of libcharon failed");
+		return FALSE;
+	}
+
+	return TRUE;
+}