1 files changed, 399 insertions, 0 deletions
diff --git a/ipsec-tools/src/racoon/evt.c b/ipsec-tools/src/racoon/evt.c
new file mode 100644
index 00000000..11d96954
--- /dev/null
+++ b/ipsec-tools/src/racoon/evt.c
@@ -0,0 +1,399 @@
+/*	$NetBSD: evt.c,v 1.10 2010/10/21 06:15:28 tteras Exp $	*/
+
+/* Id: evt.c,v 1.5 2006/06/22 20:11:35 manubsd Exp */
+
+/*
+ * Copyright (C) 2004 Emmanuel Dreyfus
+ * Copyright (C) 2008 Timo Teras
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "config.h"
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <time.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/queue.h>
+#include <sys/socket.h>
+
+#include "vmbuf.h"
+#include "plog.h"
+#include "misc.h"
+#include "admin.h"
+#include "handler.h"
+#include "session.h"
+#include "gcmalloc.h"
+#include "evt.h"
+#include "var.h"
+
+#ifdef ENABLE_ADMINPORT
+
+static EVT_LISTENER_LIST(evt_listeners);
+
+struct evt_message {
+	struct admin_com adm;
+	struct evt_async evt;
+};
+
+struct evt {
+	struct evtdump *dump;
+	TAILQ_ENTRY(evt) next;
+};
+
+TAILQ_HEAD(evtlist, evt);
+
+#define EVTLIST_MAX	32
+
+static struct evtlist evtlist = TAILQ_HEAD_INITIALIZER(evtlist);
+static int evtlist_len = 0;
+static int evtlist_inuse = 0;
+
+static struct {
+	int newtype, oldtype;
+} evttype_map[] = {
+	{ EVT_RACOON_QUIT,		EVTT_RACOON_QUIT },
+	{ EVT_PHASE1_UP,		EVTT_PHASE1_UP },
+	{ EVT_PHASE1_DOWN,		EVTT_PHASE1_DOWN },
+	{ EVT_PHASE1_NO_RESPONSE,	EVTT_PEER_NO_RESPONSE },
+	{ EVT_PHASE1_NO_PROPOSAL,	EVTT_PEERPH1_NOPROP },
+	{ EVT_PHASE1_AUTH_FAILED,	EVTT_PEERPH1AUTH_FAILED },
+	{ EVT_PHASE1_DPD_TIMEOUT,	EVTT_DPD_TIMEOUT },
+	{ EVT_PHASE1_PEER_DELETED,	EVTT_PEER_DELETE },
+	{ EVT_PHASE1_MODE_CFG,		EVTT_ISAKMP_CFG_DONE },
+	{ EVT_PHASE1_XAUTH_SUCCESS,	EVTT_XAUTH_SUCCESS },
+	{ EVT_PHASE1_XAUTH_FAILED,	EVTT_XAUTH_FAILED },
+	{ EVT_PHASE2_NO_PHASE1,		-1 },
+	{ EVT_PHASE2_UP,		EVTT_PHASE2_UP },
+	{ EVT_PHASE2_DOWN,		EVTT_PHASE2_DOWN },
+	{ EVT_PHASE2_NO_RESPONSE,	EVTT_PEER_NO_RESPONSE },
+};
+
+static void
+evt_push(src, dst, type, optdata)
+	struct sockaddr *src;
+	struct sockaddr *dst;
+	int type;
+	vchar_t *optdata;
+{
+	struct evtdump *evtdump;
+	struct evt *evt;
+	size_t len;
+	int i;
+
+	/* If admin socket is disabled, silently discard anything */
+	if (adminsock_path == NULL || !evtlist_inuse)
+		return;
+
+	/* Map the event type to old */
+	for (i = 0; i < sizeof(evttype_map) / sizeof(evttype_map[0]); i++)
+		if (evttype_map[i].newtype == type)
+			break;
+	if (i >= sizeof(evttype_map) / sizeof(evttype_map[0]))
+		return;
+
+	type = evttype_map[i].oldtype;
+	if (type < 0)
+		return;
+
+	/* If we are above the limit, don't record anything */
+	if (evtlist_len > EVTLIST_MAX) {
+		plog(LLV_DEBUG, LOCATION, NULL, 
+		    "Cannot record event: event queue overflowed\n");
+		return;
+	}
+
+	/* If we hit the limit, record an overflow event instead */
+	if (evtlist_len == EVTLIST_MAX) {
+		plog(LLV_ERROR, LOCATION, NULL, 
+		    "Cannot record event: event queue overflow\n");
+		src = NULL;
+		dst = NULL;
+		type = EVTT_OVERFLOW;
+		optdata = NULL;
+	}
+
+	len = sizeof(*evtdump);
+	if (optdata)
+		len += optdata->l;
+
+	if ((evtdump = racoon_malloc(len)) == NULL) {
+		plog(LLV_ERROR, LOCATION, NULL, "Cannot record event: %s\n",
+		    strerror(errno));
+		return;
+	}
+
+	if ((evt = racoon_malloc(sizeof(*evt))) == NULL) {
+		plog(LLV_ERROR, LOCATION, NULL, "Cannot record event: %s\n",
+		    strerror(errno));
+		racoon_free(evtdump);
+		return;
+	}
+
+	if (src)
+		memcpy(&evtdump->src, src, sysdep_sa_len(src));
+	if (dst)
+		memcpy(&evtdump->dst, dst, sysdep_sa_len(dst));
+	evtdump->len = len;
+	evtdump->type = type;
+	time(&evtdump->timestamp);
+
+	if (optdata)
+		memcpy(evtdump + 1, optdata->v, optdata->l);
+
+	evt->dump = evtdump;
+	TAILQ_INSERT_TAIL(&evtlist, evt, next);
+
+	evtlist_len++;
+
+	return;
+}
+
+static struct evtdump *
+evt_pop(void) {
+	struct evtdump *evtdump;
+	struct evt *evt;
+
+	if ((evt = TAILQ_FIRST(&evtlist)) == NULL)
+		return NULL;
+
+	evtdump = evt->dump;
+	TAILQ_REMOVE(&evtlist, evt, next);
+	racoon_free(evt);
+	evtlist_len--;
+
+	return evtdump;
+}
+
+vchar_t *
+evt_dump(void) {
+	struct evtdump *evtdump;
+	vchar_t *buf = NULL;
+
+	if (!evtlist_inuse) {
+		evtlist_inuse = 1;
+		plog(LLV_ERROR, LOCATION, NULL,
+		     "evt_dump: deprecated event polling used\n");
+	}
+
+	if ((evtdump = evt_pop()) != NULL) {
+		if ((buf = vmalloc(evtdump->len)) == NULL) {
+			plog(LLV_ERROR, LOCATION, NULL, 
+			    "evt_dump failed: %s\n", strerror(errno));
+			return NULL;
+		}
+		memcpy(buf->v, evtdump, evtdump->len);	
+		racoon_free(evtdump);
+	}
+
+	return buf;
+}
+
+static struct evt_message *
+evtmsg_create(type, optdata)
+	int type;
+	vchar_t *optdata;
+{
+	struct evt_message *e;
+	size_t len;
+
+	len = sizeof(struct evt_message);
+	if (optdata != NULL)
+		len += optdata->l;
+
+	if ((e = racoon_malloc(len)) == NULL) {
+		plog(LLV_ERROR, LOCATION, NULL, "Cannot allocate event: %s\n",
+		     strerror(errno));
+		return NULL;
+	}
+
+	memset(e, 0, sizeof(struct evt_message));
+	e->adm.ac_len = len;
+	e->adm.ac_cmd = ADMIN_SHOW_EVT;
+	e->adm.ac_errno = 0;
+	e->adm.ac_proto = 0;
+	e->evt.ec_type = type;
+	time(&e->evt.ec_timestamp);
+	if (optdata != NULL)
+		memcpy(e + 1, optdata->v, optdata->l);
+
+	return e;
+}
+
+static void
+evt_unsubscribe(l)
+	struct evt_listener *l;
+{
+	plog(LLV_DEBUG, LOCATION, NULL,
+	     "[%d] admin connection released\n", l->fd);
+
+	LIST_REMOVE(l, ll_chain);
+	unmonitor_fd(l->fd);
+	close(l->fd);
+	racoon_free(l);
+}
+
+static int
+evt_unsubscribe_cb(ctx, fd)
+	void *ctx;
+	int fd;
+{
+	evt_unsubscribe((struct evt_listener *) ctx);
+	return 0;
+}
+
+static void
+evtmsg_broadcast(ll, e)
+	const struct evt_listener_list *ll;
+	struct evt_message *e;
+{
+	struct evt_listener *l, *nl;
+
+	for (l = LIST_FIRST(ll); l != NULL; l = nl) {
+		nl = LIST_NEXT(l, ll_chain);
+
+		if (send(l->fd, e, e->adm.ac_len, MSG_DONTWAIT) < 0) {
+			plog(LLV_DEBUG, LOCATION, NULL, "Cannot send event to fd: %s\n",
+				strerror(errno));
+			evt_unsubscribe(l);
+		}
+	}
+}
+
+void
+evt_generic(type, optdata)
+	int type;
+	vchar_t *optdata;
+{
+	struct evt_message *e;
+
+	if ((e = evtmsg_create(type, optdata)) == NULL)
+		return;
+
+	evtmsg_broadcast(&evt_listeners, e);
+	evt_push(&e->evt.ec_ph1src, &e->evt.ec_ph1dst, type, optdata);
+
+	racoon_free(e);
+}
+
+void
+evt_phase1(ph1, type, optdata)
+	const struct ph1handle *ph1;
+	int type;
+	vchar_t *optdata;
+{
+	struct evt_message *e;
+
+	if ((e = evtmsg_create(type, optdata)) == NULL)
+		return;
+
+	if (ph1->local)
+		memcpy(&e->evt.ec_ph1src, ph1->local, sysdep_sa_len(ph1->local));
+	if (ph1->remote)
+		memcpy(&e->evt.ec_ph1dst, ph1->remote, sysdep_sa_len(ph1->remote));
+
+	evtmsg_broadcast(&ph1->evt_listeners, e);
+	evtmsg_broadcast(&evt_listeners, e);
+	evt_push(&e->evt.ec_ph1src, &e->evt.ec_ph1dst, type, optdata);
+
+	racoon_free(e);
+}
+
+void
+evt_phase2(ph2, type, optdata)
+	const struct ph2handle *ph2;
+	int type;
+	vchar_t *optdata;
+{
+	struct evt_message *e;
+	struct ph1handle *ph1 = ph2->ph1;
+
+	if ((e = evtmsg_create(type, optdata)) == NULL)
+		return;
+
+	if (ph1) {
+		if (ph1->local)
+			memcpy(&e->evt.ec_ph1src, ph1->local, sysdep_sa_len(ph1->local));
+		if (ph1->remote)
+			memcpy(&e->evt.ec_ph1dst, ph1->remote, sysdep_sa_len(ph1->remote));
+	}
+	e->evt.ec_ph2msgid = ph2->msgid;
+
+	evtmsg_broadcast(&ph2->evt_listeners, e);
+	if (ph1)
+		evtmsg_broadcast(&ph1->evt_listeners, e);
+	evtmsg_broadcast(&evt_listeners, e);
+	evt_push(&e->evt.ec_ph1src, &e->evt.ec_ph1dst, type, optdata);
+
+	racoon_free(e);
+}
+
+int
+evt_subscribe(list, fd)
+	struct evt_listener_list *list;
+	int fd;
+{
+	struct evt_listener *l;
+
+	if ((l = racoon_malloc(sizeof(*l))) == NULL) {
+		plog(LLV_ERROR, LOCATION, NULL,
+		     "Cannot allocate event listener: %s\n",
+		     strerror(errno));
+		return errno;
+	}
+
+	if (list == NULL)
+		list = &evt_listeners;
+
+	LIST_INSERT_HEAD(list, l, ll_chain);
+	l->fd = fd;
+	monitor_fd(l->fd, evt_unsubscribe_cb, l, 0);
+
+	plog(LLV_DEBUG, LOCATION, NULL,
+	     "[%d] admin connection is polling events\n", fd);
+
+	return -2;
+}
+
+void
+evt_list_init(list)
+	struct evt_listener_list *list;
+{
+	LIST_INIT(list);
+}
+
+void
+evt_list_cleanup(list)
+	struct evt_listener_list *list;
+{
+	while (!LIST_EMPTY(list))
+		evt_unsubscribe(LIST_FIRST(list));
+}
+
+#endif /* ENABLE_ADMINPORT */