1 /* $NetBSD: evt.c,v 1.5 2006/09/09 16:22:09 manu Exp $ */ 2 3 /* Id: evt.c,v 1.5 2006/06/22 20:11:35 manubsd Exp */ 4 5 /* 6 * Copyright (C) 2004 Emmanuel Dreyfus 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the project nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include "config.h" 35 36 #include <errno.h> 37 #include <string.h> 38 #include <stdio.h> 39 #include <time.h> 40 #include <unistd.h> 41 #include <stdlib.h> 42 #include <sys/queue.h> 43 #include <sys/socket.h> 44 45 #include "vmbuf.h" 46 #include "plog.h" 47 #include "misc.h" 48 #include "admin.h" 49 #include "gcmalloc.h" 50 #include "evt.h" 51 52 #ifdef ENABLE_ADMINPORT 53 struct evtlist evtlist = TAILQ_HEAD_INITIALIZER(evtlist); 54 int evtlist_len = 0; 55 56 void 57 evt_push(src, dst, type, optdata) 58 struct sockaddr *src; 59 struct sockaddr *dst; 60 int type; 61 vchar_t *optdata; 62 { 63 struct evtdump *evtdump; 64 struct evt *evt; 65 size_t len; 66 67 /* If admin socket is disabled, silently discard anything */ 68 if (adminsock_path == NULL) 69 return; 70 71 /* If we are above the limit, don't record anything */ 72 if (evtlist_len > EVTLIST_MAX) { 73 plog(LLV_DEBUG, LOCATION, NULL, 74 "Cannot record event: event queue overflowed\n"); 75 return; 76 } 77 78 /* If we hit the limit, record an overflow event instead */ 79 if (evtlist_len == EVTLIST_MAX) { 80 plog(LLV_ERROR, LOCATION, NULL, 81 "Cannot record event: event queue overflow\n"); 82 src = NULL; 83 dst = NULL; 84 type = EVTT_OVERFLOW; 85 optdata = NULL; 86 } 87 88 len = sizeof(*evtdump); 89 if (optdata) 90 len += optdata->l; 91 92 if ((evtdump = racoon_malloc(len)) == NULL) { 93 plog(LLV_ERROR, LOCATION, NULL, "Cannot record event: %s\n", 94 strerror(errno)); 95 return; 96 } 97 98 if ((evt = racoon_malloc(sizeof(*evt))) == NULL) { 99 plog(LLV_ERROR, LOCATION, NULL, "Cannot record event: %s\n", 100 strerror(errno)); 101 racoon_free(evtdump); 102 return; 103 } 104 105 if (src) 106 memcpy(&evtdump->src, src, sysdep_sa_len(src)); 107 if (dst) 108 memcpy(&evtdump->dst, dst, sysdep_sa_len(dst)); 109 evtdump->len = len; 110 evtdump->type = type; 111 time(&evtdump->timestamp); 112 113 if (optdata) 114 memcpy(evtdump + 1, optdata->v, optdata->l); 115 116 evt->dump = evtdump; 117 TAILQ_INSERT_TAIL(&evtlist, evt, next); 118 119 evtlist_len++; 120 121 return; 122 } 123 124 struct evtdump * 125 evt_pop(void) { 126 struct evtdump *evtdump; 127 struct evt *evt; 128 129 if ((evt = TAILQ_FIRST(&evtlist)) == NULL) 130 return NULL; 131 132 evtdump = evt->dump; 133 TAILQ_REMOVE(&evtlist, evt, next); 134 racoon_free(evt); 135 evtlist_len--; 136 137 return evtdump; 138 } 139 140 vchar_t * 141 evt_dump(void) { 142 struct evtdump *evtdump; 143 vchar_t *buf = NULL; 144 145 if ((evtdump = evt_pop()) != NULL) { 146 if ((buf = vmalloc(evtdump->len)) == NULL) { 147 plog(LLV_ERROR, LOCATION, NULL, 148 "evt_dump failed: %s\n", strerror(errno)); 149 return NULL; 150 } 151 memcpy(buf->v, evtdump, evtdump->len); 152 racoon_free(evtdump); 153 } 154 155 return buf; 156 } 157 158 #endif /* ENABLE_ADMINPORT */ 159
