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84 lines
2.0 KiB
84 lines
2.0 KiB
/*
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* libipq.h
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*
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* IPQ library for userspace.
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*
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* Author: James Morris <jmorris@intercode.com.au>
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*
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* Copyright (c) 2000-2001 Netfilter Core Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef _LIBIPQ_H
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#define _LIBIPQ_H
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#include <errno.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/uio.h>
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#include <asm/types.h>
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#include <linux/netlink.h>
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#include <linux/netfilter_ipv4/ip_queue.h>
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typedef unsigned long ipq_id_t;
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#ifdef DEBUG_LIBIPQ
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#include <stdio.h>
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#define LDEBUG(x...) fprintf(stderr, ## x)
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#else
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#define LDEBUG(x...)
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#endif /* DEBUG_LIBIPQ */
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/* FIXME: glibc sucks */
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#ifndef MSG_TRUNC
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#define MSG_TRUNC 0x20
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#endif
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struct ipq_handle
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{
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int fd;
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u_int8_t blocking;
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struct sockaddr_nl local;
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struct sockaddr_nl peer;
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};
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struct ipq_handle *ipq_create_handle(u_int32_t flags, u_int32_t protocol);
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int ipq_destroy_handle(struct ipq_handle *h);
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ssize_t ipq_read(const struct ipq_handle *h,
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unsigned char *buf, size_t len, int timeout);
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int ipq_set_mode(const struct ipq_handle *h, u_int8_t mode, size_t len);
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ipq_packet_msg_t *ipq_get_packet(const unsigned char *buf);
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int ipq_message_type(const unsigned char *buf);
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int ipq_get_msgerr(const unsigned char *buf);
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int ipq_set_verdict(const struct ipq_handle *h,
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ipq_id_t id,
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unsigned int verdict,
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size_t data_len,
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unsigned char *buf);
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int ipq_ctl(const struct ipq_handle *h, int request, ...);
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char *ipq_errstr(void);
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void ipq_perror(const char *s);
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#endif /* _LIBIPQ_H */
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