libipq.c File Reference

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/time.h>
#include <sys/types.h>
#include <libipq/libipq.h>
#include <netinet/in.h>
#include <linux/netfilter.h>

Include dependency graph for libipq.c:

Data Structures
struct	ipq_errmap_t

Macros
#define	IPQ_MAXERR   IPQ_ERR_PROTOCOL

Enumerations
enum	{   IPQ_ERR_NONE = 0,   IPQ_ERR_IMPL,   IPQ_ERR_HANDLE,   IPQ_ERR_SOCKET,   IPQ_ERR_BIND,   IPQ_ERR_BUFFER,   IPQ_ERR_RECV,   IPQ_ERR_NLEOF,   IPQ_ERR_ADDRLEN,   IPQ_ERR_STRUNC,   IPQ_ERR_RTRUNC,   IPQ_ERR_NLRECV,   IPQ_ERR_SEND,   IPQ_ERR_SUPP,   IPQ_ERR_RECVBUF,   IPQ_ERR_TIMEOUT,   IPQ_ERR_PROTOCOL }

Functions
struct ipq_handle *	ipq_create_handle (uint32_t flags, uint32_t protocol)
int	ipq_destroy_handle (struct ipq_handle *h)
int	ipq_set_mode (const struct ipq_handle *h, uint8_t mode, size_t range)
ssize_t	ipq_read (const struct ipq_handle *h, unsigned char *buf, size_t len, int timeout)
int	ipq_message_type (const unsigned char *buf)
int	ipq_get_msgerr (const unsigned char *buf)
ipq_packet_msg_t *	ipq_get_packet (const unsigned char *buf)
int	ipq_set_verdict (const struct ipq_handle *h, ipq_id_t id, unsigned int verdict, size_t data_len, unsigned char *buf)
int	ipq_ctl (const struct ipq_handle *h, int request,...)
char *	ipq_errstr (void)
void	ipq_perror (const char *s)

Variables
struct ipq_errmap_t	ipq_errmap []

Macro Definition Documentation

#define IPQ_MAXERR   IPQ_ERR_PROTOCOL

Enumeration Type Documentation

anonymous enum

Enumerator
IPQ_ERR_NONE
IPQ_ERR_IMPL
IPQ_ERR_HANDLE
IPQ_ERR_SOCKET
IPQ_ERR_BIND
IPQ_ERR_BUFFER
IPQ_ERR_RECV
IPQ_ERR_NLEOF
IPQ_ERR_ADDRLEN
IPQ_ERR_STRUNC
IPQ_ERR_RTRUNC
IPQ_ERR_NLRECV
IPQ_ERR_SEND
IPQ_ERR_SUPP
IPQ_ERR_RECVBUF
IPQ_ERR_TIMEOUT
IPQ_ERR_PROTOCOL

Function Documentation

struct ipq_handle* ipq_create_handle	(	uint32_t	flags,
		uint32_t	protocol
	)

References ipq_handle::fd, IPQ_ERR_BIND, IPQ_ERR_HANDLE, IPQ_ERR_PROTOCOL, IPQ_ERR_SOCKET, ipq_handle::local, NETLINK_FIREWALL, NETLINK_IP6_FW, NFPROTO_IPV4, NFPROTO_IPV6, sockaddr_nl::nl_family, sockaddr_nl::nl_groups, sockaddr_nl::nl_pid, NULL, and ipq_handle::peer.

int ipq_ctl	(	const struct ipq_handle *	h,
		int	request,
			...
	)

int ipq_destroy_handle

(

struct ipq_handle *

h

)

References ipq_handle::fd.

char* ipq_errstr

(

void

)

Referenced by ipq_perror().

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int ipq_get_msgerr

(

const unsigned char *

buf

)

References nlmsgerr::error, and NLMSG_DATA.

ipq_packet_msg_t* ipq_get_packet

(

const unsigned char *

buf

)

References NLMSG_DATA.

int ipq_message_type

(

const unsigned char *

buf

)

void ipq_perror

(

const char *

s

)

References ipq_errstr().

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ssize_t ipq_read	(	const struct ipq_handle *	h,
		unsigned char *	buf,
		size_t	len,
		int	timeout
	)

int ipq_set_mode	(	const struct ipq_handle *	h,
		uint8_t	mode,
		size_t	range
	)

References IPQM_MODE, ipq_handle::local, sockaddr_nl::nl_pid, NLM_F_REQUEST, NLMSG_LENGTH, and req.

int ipq_set_verdict	(	const struct ipq_handle *	h,
		ipq_id_t	id,
		unsigned int	verdict,
		size_t	data_len,
		unsigned char *	buf
	)

References buf, id, IPQM_VERDICT, ipq_handle::local, sockaddr_nl::nl_pid, nlh, NLM_F_REQUEST, nlmsghdr::nlmsg_flags, nlmsghdr::nlmsg_len, nlmsghdr::nlmsg_pid, nlmsghdr::nlmsg_type, NULL, ipq_handle::peer, and verdict.

Variable Documentation

struct ipq_errmap_t ipq_errmap[]

Initial value:

= {
    { IPQ_ERR_NONE, "Unknown error" },
    { IPQ_ERR_IMPL, "Implementation error" },
    { IPQ_ERR_HANDLE, "Unable to create netlink handle" },
    { IPQ_ERR_SOCKET, "Unable to create netlink socket" },
    { IPQ_ERR_BIND, "Unable to bind netlink socket" },
    { IPQ_ERR_BUFFER, "Unable to allocate buffer" },
    { IPQ_ERR_RECV, "Failed to receive netlink message" },
    { IPQ_ERR_NLEOF, "Received EOF on netlink socket" },
    { IPQ_ERR_ADDRLEN, "Invalid peer address length" },
    { IPQ_ERR_STRUNC, "Sent message truncated" },
    { IPQ_ERR_RTRUNC, "Received message truncated" },
    { IPQ_ERR_NLRECV, "Received error from netlink" },
    { IPQ_ERR_SEND, "Failed to send netlink message" },
    { IPQ_ERR_SUPP, "Operation not supported" },
    { IPQ_ERR_RECVBUF, "Receive buffer size invalid" },
    { IPQ_ERR_TIMEOUT, "Timeout"},
    { IPQ_ERR_PROTOCOL, "Invalid protocol specified" }
}