/* $NetBSD: evt.c,v 1.5 2006/09/09 16:22:09 manu Exp $ */
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/* Id: evt.c,v 1.5 2006/06/22 20:11:35 manubsd Exp */
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/*
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* Copyright (C) 2004 Emmanuel Dreyfus
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "config.h"
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#include <errno.h>
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#include <string.h>
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#include <stdio.h>
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#include <time.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <sys/queue.h>
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#include <sys/socket.h>
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#include "vmbuf.h"
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#include "plog.h"
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#include "misc.h"
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#include "admin.h"
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#include "gcmalloc.h"
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#include "evt.h"
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#ifdef ENABLE_ADMINPORT
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struct evtlist evtlist = TAILQ_HEAD_INITIALIZER(evtlist);
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int evtlist_len = 0;
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void
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evt_push(src, dst, type, optdata)
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struct sockaddr *src;
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struct sockaddr *dst;
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int type;
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vchar_t *optdata;
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{
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struct evtdump *evtdump;
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struct evt *evt;
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size_t len;
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/* If admin socket is disabled, silently discard anything */
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if (adminsock_path == NULL)
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return;
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/* If we are above the limit, don't record anything */
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if (evtlist_len > EVTLIST_MAX) {
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plog(LLV_DEBUG, LOCATION, NULL,
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"Cannot record event: event queue overflowed\n");
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return;
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}
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/* If we hit the limit, record an overflow event instead */
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if (evtlist_len == EVTLIST_MAX) {
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plog(LLV_ERROR, LOCATION, NULL,
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"Cannot record event: event queue overflow\n");
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src = NULL;
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dst = NULL;
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type = EVTT_OVERFLOW;
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optdata = NULL;
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}
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len = sizeof(*evtdump);
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if (optdata)
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len += optdata->l;
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if ((evtdump = racoon_malloc(len)) == NULL) {
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plog(LLV_ERROR, LOCATION, NULL, "Cannot record event: %s\n",
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strerror(errno));
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return;
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}
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if ((evt = racoon_malloc(sizeof(*evt))) == NULL) {
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plog(LLV_ERROR, LOCATION, NULL, "Cannot record event: %s\n",
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strerror(errno));
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racoon_free(evtdump);
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return;
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}
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if (src)
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memcpy(&evtdump->src, src, sysdep_sa_len(src));
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if (dst)
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memcpy(&evtdump->dst, dst, sysdep_sa_len(dst));
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evtdump->len = len;
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evtdump->type = type;
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time(&evtdump->timestamp);
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if (optdata)
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memcpy(evtdump + 1, optdata->v, optdata->l);
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evt->dump = evtdump;
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TAILQ_INSERT_TAIL(&evtlist, evt, next);
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evtlist_len++;
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return;
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}
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struct evtdump *
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evt_pop(void) {
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struct evtdump *evtdump;
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struct evt *evt;
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if ((evt = TAILQ_FIRST(&evtlist)) == NULL)
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return NULL;
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evtdump = evt->dump;
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TAILQ_REMOVE(&evtlist, evt, next);
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racoon_free(evt);
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evtlist_len--;
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return evtdump;
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}
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vchar_t *
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evt_dump(void) {
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struct evtdump *evtdump;
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vchar_t *buf = NULL;
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if ((evtdump = evt_pop()) != NULL) {
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if ((buf = vmalloc(evtdump->len)) == NULL) {
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plog(LLV_ERROR, LOCATION, NULL,
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"evt_dump failed: %s\n", strerror(errno));
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return NULL;
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}
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memcpy(buf->v, evtdump, evtdump->len);
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racoon_free(evtdump);
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}
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return buf;
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}
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#endif /* ENABLE_ADMINPORT */
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