1 /* $OpenBSD: pflogd.h,v 1.8 2024/05/21 05:00:47 jsg Exp $ */ 2 3 /* 4 * Copyright (c) 2003 Can Erkin Acar 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/limits.h> 20 #include <pcap.h> 21 22 #define DEF_SNAPLEN 160 /* pfloghdr + ip hdr + proto hdr fit usually */ 23 #define PCAP_TO_MS 500 /* pcap read timeout (ms) */ 24 #define PCAP_NUM_PKTS 1000 /* max number of packets to process at each loop */ 25 #define PCAP_OPT_FIL 1 /* filter optimization */ 26 #define FLUSH_DELAY 60 /* flush delay */ 27 28 #define PFLOGD_LOG_FILE "/var/log/pflog" 29 #define PFLOGD_DEFAULT_IF "pflog0" 30 31 #define PFLOGD_MAXSNAPLEN INT_MAX 32 #define PFLOGD_BUFSIZE 65536 /* buffer size for incoming packets */ 33 34 void logmsg(int priority, const char *message, ...); 35 36 /* Privilege separation */ 37 void priv_init(int, int, char **); 38 int priv_init_pcap(int); 39 int priv_set_snaplen(int snaplen); 40 int priv_open_log(void); 41 42 int init_pcap(void); 43 void set_pcap_filter(void); 44 /* File descriptor send/recv */ 45 void send_fd(int, int); 46 int receive_fd(int); 47 48 extern int Debug; 49