libipulog.c File Reference

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <net/if.h>
#include <libipulog/libipulog.h>

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Data Structures
struct	ipulog_handle
struct	ipulog_errmap_t

Functions
char *	ipulog_strerror (int errcode)
u_int32_t	ipulog_group2gmask (u_int32_t group)
struct ipulog_handle *	ipulog_create_handle (u_int32_t gmask, u_int32_t rcvbufsize)
void	ipulog_destroy_handle (struct ipulog_handle *h)
ssize_t	ipulog_read (struct ipulog_handle *h, unsigned char *buf, size_t len)
ulog_packet_msg_t *	ipulog_get_packet (struct ipulog_handle *h, const unsigned char *buf, size_t len)
void	ipulog_perror (const char *s)
int	ipulog_get_fd (struct ipulog_handle *h)

Variables
int	ipulog_errno = IPULOG_ERR_NONE
struct ipulog_errmap_t	ipulog_errmap []

Function Documentation

struct ipulog_handle* ipulog_create_handle	(	u_int32_t	gmask,
		u_int32_t	rcvbufsize
	)

References ipulog_handle::fd, IPULOG_ERR_BIND, IPULOG_ERR_HANDLE, IPULOG_ERR_RECVBUF, IPULOG_ERR_SOCKET, ipulog_errno, ipulog_handle::local, NETLINK_NFLOG, nflog_bind_group(), nflog_bind_pf(), nflog_open(), ipulog_handle::nful_gh, ipulog_handle::nfulh, sockaddr_nl::nl_family, sockaddr_nl::nl_groups, sockaddr_nl::nl_pid, NULL, PAYLOAD_SIZE, and ipulog_handle::peer.

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void ipulog_destroy_handle

(

struct ipulog_handle *

h

)

References ipulog_handle::fd, nflog_close(), nflog_unbind_group(), ipulog_handle::nful_gh, and ipulog_handle::nfulh.

Referenced by main().

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int ipulog_get_fd

(

struct ipulog_handle *

h

)

References ipulog_handle::fd.

ulog_packet_msg_t* ipulog_get_packet	(	struct ipulog_handle *	h,
		const unsigned char *	buf,
		size_t	len
	)

References ulog_packet_msg::data_len, nfulnl_msg_packet_hdr::hook, ulog_packet_msg::hook, nfulnl_msg_packet_hw::hw_addr, nfulnl_msg_packet_hw::hw_addrlen, ulog_packet_msg::indev_name, IPULOG_ERR_INVNL, ipulog_errno, ipulog_handle::last_nlh, ipulog_handle::last_nlhdr, ulog_packet_msg::mac, ulog_packet_msg::mac_len, ulog_packet_msg::mark, NFA_DATA, NFA_PAYLOAD, nflog_nfnlh(), NFM_NFA, NFM_PAYLOAD, nfnl_get_msg_first(), nfnl_get_msg_next(), nfnl_parse_attr(), NFULA_HWADDR, NFULA_IFINDEX_INDEV, NFULA_IFINDEX_OUTDEV, NFULA_MARK, NFULA_MAX, NFULA_PACKET_HDR, NFULA_PAYLOAD, NFULA_PREFIX, NFULA_TIMESTAMP, ipulog_handle::nfulh, nlh, NLM_F_MULTI, NLMSG_DATA, NLMSG_DONE, nlmsghdr::nlmsg_flags, NLMSG_NEXT, NLMSG_OK, nlmsghdr::nlmsg_type, NULL, ulog_packet_msg::outdev_name, ulog_packet_msg::payload, ulog_packet_msg::prefix, tb, ulog_packet_msg::timestamp_sec, ulog_packet_msg::timestamp_usec, ULOG_PREFIX_LEN, and ipulog_handle::upmsg.

Referenced by main().

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u_int32_t ipulog_group2gmask

(

u_int32_t

group

)

References IPULOG_ERR_INVGR, and ipulog_errno.

Referenced by main().

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void ipulog_perror

(

const char *

s

)

References ipulog_errno, and ipulog_strerror().

Referenced by main().

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ssize_t ipulog_read	(	struct ipulog_handle *	h,
		unsigned char *	buf,
		size_t	len
	)

char* ipulog_strerror

(

int

errcode

)

References IPULOG_ERR_IMPL, ipulog_errmap, and IPULOG_MAXERR.

Variable Documentation

struct ipulog_errmap_t ipulog_errmap[]

Initial value:

= 
{
    { IPULOG_ERR_NONE, "No error" },
    { IPULOG_ERR_IMPL, "Not implemented yet" },
    { IPULOG_ERR_HANDLE, "Unable to create netlink handle" },
    { IPULOG_ERR_SOCKET, "Unable to create netlink socket" },
    { IPULOG_ERR_BIND, "Unable to bind netlink socket" },
    { IPULOG_ERR_RECVBUF, "Receive buffer size invalid" },
    { IPULOG_ERR_RECV, "Error during netlink receive" },
    { IPULOG_ERR_NLEOF, "Received EOF on netlink socket" },
    { IPULOG_ERR_TRUNC, "Receive message truncated" },
    { IPULOG_ERR_INVGR, "Invalid group specified" },
    { IPULOG_ERR_INVNL, "Invalid netlink message" },
}

int ipulog_errno = IPULOG_ERR_NONE

Referenced by main().