#include <libmnl/libmnl.h>
#include <stdarg.h>

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Macros
#define	MAX_CHILD 64

#define	parent_fail(msg)

#define	child_exit(msg, code)

#define	DEBUG

#define	debug(...) do { fprintf(stderr, ##__VA_ARGS__); } while (0)

#define	debug_ns(...)

Enumerations
enum	{ CMD_SYNC, CMD_SOCKET, CMD_DONE, CMD_ERREXIT }

Functions
int	init_nssocket (const char *nsname)

int	fini_nssocket (void)

int	nssocket (int domain, int type, int protocol)

struct mnl_socket *	mnl_nssocket_open (int bus)

ssize_t	tx (int fd, int *cmd, uint8_t cmdlen, int cdata)

ssize_t	rx (int fd, int cmd, uint8_t cmdlen, int cdata)

int	tx_cmd (int fd, int cmd)

int	rx_cmd (int fd)

int	tx_fd (int fd1, int fd2, int e)

int	rx_fd (int fd1)

int	debug_nfct_cb (const struct nlmsghdr nlh, void data)

struct nf_conntrack *	author_new (const struct nlmsghdr nlh, void data)

struct nf_conntrack *	author_update (const struct nlmsghdr nlh, void data)

struct nf_conntrack *	author_destroy (const struct nlmsghdr nlh, void data)

void	assert_proto (const struct nf_conntrack *ct, u_int8_t l3proto, u_int8_t l4proto)

void	assert_inaddr (const struct nf_conntrack ct, const char src, const char *dst)

void	assert_port (const struct nf_conntrack *ct, u_int16_t src, u_int16_t dst)

void	assert_typecode (const struct nf_conntrack *ct, u_int8_t type, u_int8_t code)

int	cb_icmp_new (const struct nlmsghdr nlh, void data)

int	cb_icmp_update (const struct nlmsghdr nlh, void data)

int	cb_icmp_destroy (const struct nlmsghdr nlh, void data)

int	cb_udp_new (const struct nlmsghdr nlh, void data)

int	cb_udp_update (const struct nlmsghdr nlh, void data)

int	cb_udp_destroy (const struct nlmsghdr nlh, void data)

int	cb_tcp_new (const struct nlmsghdr nlh, void data)

int	cb_tcp_syn_recv (const struct nlmsghdr nlh, void data)

int	cb_tcp_established (const struct nlmsghdr nlh, void data)

int	cb_tcp_fin_wait (const struct nlmsghdr nlh, void data)

int	cb_tcp_close_wait (const struct nlmsghdr nlh, void data)

int	cb_tcp_close (const struct nlmsghdr nlh, void data)

int	cb_tcp_destroy (const struct nlmsghdr nlh, void data)

void	tcp_echo (const struct mnl_socket nl, const char pre, const char *post)

int	handle_qacb (const struct mnl_socket nl, bool should_receive, int(cb)(const struct nlmsghdr nlh, void data), void *data)

struct mnl_socket *	mnl_event_nssocket (const char *nsname)

void	sync_fifo (const char *name)

void	add_child (pid_t pid)

Variables
pid_t	children [MAX_CHILD]

int	nchild

struct timeval	timeout

Macro Definition Documentation

#define child_exit	(	msg,
		code
	)

Value:

do {                                \
        if (code)                       \
            fprintf(stderr, "child exiting - %s:%d %s() %s: %s\n", \
                __FILE__, __LINE__, __func__, (msg), strerror(errno)); \
        _exit((code));                      \
    } while (0)

Referenced by handle_qacb().

#define DEBUG

#define debug ( ... ) do { fprintf(stderr, ##__VA_ARGS__); } while (0)

#define debug_ns ( ... )

#define MAX_CHILD 64

#define parent_fail ( msg )

Value:

do {                        \
    int i;                              \
    fprintf(stderr, "parent fail - %s:%d %s() %s: %s\n",        \
        __FILE__, __LINE__, __func__, (msg), strerror(errno));  \
    for (i = 0; i < nchild; i++)                    \
        if (children[i])                    \
            kill(children[i], SIGKILL);         \
    } while (0)

Referenced by init_nssocket(), mnl_event_nssocket(), and sync_fifo().

Enumeration Type Documentation

anonymous enum

Enumerator
CMD_SYNC
CMD_SOCKET
CMD_DONE
CMD_ERREXIT

Function Documentation

void add_child ( pid_t pid )

References children, and nchild.

Referenced by init_nssocket().

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void assert_inaddr	(	const struct nf_conntrack *	ct,
		const char *	src,
		const char *	dst
	)

References ATTR_ORIG_IPV4_DST, ATTR_ORIG_IPV4_SRC, ATTR_REPL_IPV4_DST, ATTR_REPL_IPV4_SRC, and nfct_get_attr_u32().

Referenced by author_destroy(), author_new(), and author_update().

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void assert_port	(	const struct nf_conntrack *	ct,
		u_int16_t	src,
		u_int16_t	dst
	)

References ATTR_ORIG_PORT_DST, ATTR_ORIG_PORT_SRC, ATTR_REPL_PORT_DST, ATTR_REPL_PORT_SRC, and nfct_get_attr_u16().

Referenced by cb_tcp_close(), cb_tcp_close_wait(), cb_tcp_destroy(), cb_tcp_established(), cb_tcp_fin_wait(), cb_tcp_new(), cb_tcp_syn_recv(), cb_udp_destroy(), cb_udp_new(), and cb_udp_update().

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void assert_proto	(	const struct nf_conntrack *	ct,
		u_int8_t	l3proto,
		u_int8_t	l4proto
	)

References ATTR_ORIG_L3PROTO, ATTR_ORIG_L4PROTO, ATTR_REPL_L3PROTO, ATTR_REPL_L4PROTO, and nfct_get_attr_u8().

Referenced by author_destroy(), author_new(), and author_update().

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void assert_typecode	(	const struct nf_conntrack *	ct,
		u_int8_t	type,
		u_int8_t	code
	)

References ATTR_ICMP_CODE, ATTR_ICMP_TYPE, and nfct_get_attr_u8().

Referenced by cb_icmp_destroy(), cb_icmp_new(), and cb_icmp_update().

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struct nf_conntrack* author_destroy	(	const struct nlmsghdr *	nlh,
		void *	data
	)

References assert_inaddr(), assert_proto(), ATTR_STATUS, ct, IPCTNL_MSG_CT_DELETE, IPS_SEEN_REPLY, nfct_get_attr_u32(), nfct_new(), nfct_nlmsg_parse(), nlmsghdr::nlmsg_flags, nlmsghdr::nlmsg_type, and NULL.

Referenced by cb_icmp_destroy(), cb_tcp_destroy(), and cb_udp_destroy().

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struct nf_conntrack* author_new	(	const struct nlmsghdr *	nlh,
		void *	data
	)

References assert_inaddr(), assert_proto(), ATTR_STATUS, ATTR_TIMEOUT, ct, IPCTNL_MSG_CT_NEW, IPS_SEEN_REPLY, nfct_get_attr_u32(), nfct_new(), nfct_nlmsg_parse(), NLM_F_CREATE, NLM_F_EXCL, nlmsghdr::nlmsg_flags, nlmsghdr::nlmsg_type, NULL, and timeout.

Referenced by cb_icmp_new(), cb_tcp_new(), and cb_udp_new().

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struct nf_conntrack* author_update	(	const struct nlmsghdr *	nlh,
		void *	data
	)

References assert_inaddr(), assert_proto(), ATTR_STATUS, ATTR_TIMEOUT, ct, IPCTNL_MSG_CT_NEW, IPS_SEEN_REPLY, nfct_get_attr_u32(), nfct_new(), nfct_nlmsg_parse(), nlmsghdr::nlmsg_flags, nlmsghdr::nlmsg_type, NULL, and timeout.

Referenced by cb_icmp_update(), cb_tcp_close(), cb_tcp_close_wait(), cb_tcp_established(), cb_tcp_fin_wait(), cb_tcp_syn_recv(), and cb_udp_update().

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int cb_icmp_destroy	(	const struct nlmsghdr *	nlh,
		void *	data
	)

References assert_typecode(), author_destroy(), ct, ICMP_CODE, ICMP_TYPE, MNL_CB_OK, and nfct_destroy().

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int cb_icmp_new	(	const struct nlmsghdr *	nlh,
		void *	data
	)

References assert_typecode(), author_new(), ct, ICMP_CODE, ICMP_TYPE, MNL_CB_OK, and nfct_destroy().

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int cb_icmp_update	(	const struct nlmsghdr *	nlh,
		void *	data
	)

References assert_typecode(), author_update(), ct, ICMP_CODE, ICMP_TYPE, MNL_CB_OK, and nfct_destroy().

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int cb_tcp_close	(	const struct nlmsghdr *	nlh,
		void *	data
	)

References assert_port(), ATTR_STATUS, ATTR_TCP_STATE, author_update(), ct, IPS_ASSURED, MNL_CB_OK, nfct_destroy(), nfct_get_attr_u32(), nfct_get_attr_u8(), and TCP_CONNTRACK_CLOSE.

Referenced by tcp_echo().

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int cb_tcp_close_wait	(	const struct nlmsghdr *	nlh,
		void *	data
	)

References assert_port(), ATTR_STATUS, ATTR_TCP_STATE, author_update(), ct, IPS_ASSURED, MNL_CB_OK, nfct_destroy(), nfct_get_attr_u32(), nfct_get_attr_u8(), and TCP_CONNTRACK_CLOSE_WAIT.

Referenced by tcp_echo().

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int cb_tcp_destroy	(	const struct nlmsghdr *	nlh,
		void *	data
	)

References assert_port(), ATTR_STATUS, ATTR_TCP_STATE, author_destroy(), ct, IPS_ASSURED, MNL_CB_OK, nfct_attr_is_set(), nfct_destroy(), and nfct_get_attr_u32().

Referenced by tcp_echo().

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int cb_tcp_established	(	const struct nlmsghdr *	nlh,
		void *	data
	)

References assert_port(), ATTR_STATUS, ATTR_TCP_STATE, author_update(), ct, IPS_ASSURED, MNL_CB_OK, nfct_destroy(), nfct_get_attr_u32(), nfct_get_attr_u8(), and TCP_CONNTRACK_ESTABLISHED.

Referenced by tcp_echo().

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int cb_tcp_fin_wait	(	const struct nlmsghdr *	nlh,
		void *	data
	)

References assert_port(), ATTR_STATUS, ATTR_TCP_STATE, author_update(), ct, IPS_ASSURED, MNL_CB_OK, nfct_destroy(), nfct_get_attr_u32(), nfct_get_attr_u8(), and TCP_CONNTRACK_FIN_WAIT.

Referenced by tcp_echo().

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int cb_tcp_new	(	const struct nlmsghdr *	nlh,
		void *	data
	)

References assert_port(), ATTR_TCP_STATE, author_new(), ct, MNL_CB_OK, nfct_destroy(), nfct_get_attr_u8(), and TCP_CONNTRACK_SYN_SENT.

Referenced by tcp_echo().

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int cb_tcp_syn_recv	(	const struct nlmsghdr *	nlh,
		void *	data
	)

References assert_port(), ATTR_TCP_STATE, author_update(), ct, MNL_CB_OK, nfct_destroy(), nfct_get_attr_u8(), and TCP_CONNTRACK_SYN_RECV.

Referenced by tcp_echo().

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int cb_udp_destroy	(	const struct nlmsghdr *	nlh,
		void *	data
	)

References assert_port(), author_destroy(), ct, MNL_CB_OK, and nfct_destroy().

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int cb_udp_new	(	const struct nlmsghdr *	nlh,
		void *	data
	)

References assert_port(), author_new(), ct, MNL_CB_OK, and nfct_destroy().

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int cb_udp_update	(	const struct nlmsghdr *	nlh,
		void *	data
	)

References assert_port(), author_update(), ct, MNL_CB_OK, and nfct_destroy().

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int debug_nfct_cb	(	const struct nlmsghdr *	nlh,
		void *	data
	)

References buf, ct, debug, IPCTNL_MSG_CT_DELETE, IPCTNL_MSG_CT_NEW, MNL_CB_OK, nfct_destroy(), nfct_new(), nfct_nlmsg_parse(), NFCT_O_DEFAULT, nfct_snprintf(), NFCT_T_DESTROY, NFCT_T_NEW, NFCT_T_UNKNOWN, NFCT_T_UPDATE, NLM_F_CREATE, NLM_F_EXCL, nlmsghdr::nlmsg_flags, nlmsghdr::nlmsg_type, and NULL.

Referenced by handle_qacb().

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int fini_nssocket ( void )

References child_pid, CMD_DONE, NULL, PARENT_FD, pid_t, and tx_cmd().

Referenced by main().

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int handle_qacb	(	const struct mnl_socket *	nl,
		bool	should_receive,
		int()(const struct nlmsghdr nlh, void *data)	cb,
		void *	data
	)

References buf, child_exit, debug_nfct_cb(), MNL_CB_ERROR, MNL_CB_OK, mnl_cb_run(), MNL_SOCKET_BUFFER_SIZE, mnl_socket_get_fd(), mnl_socket_recvfrom(), NULL, and timeout.

Referenced by tcp_echo().

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int init_nssocket ( const char * nsname )

References add_child(), child_pid, fdpair, NULL, parent_fail, PARENT_FD, pid_t, and rx_cmd().

Referenced by mnl_event_nssocket().

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struct mnl_socket* mnl_event_nssocket ( const char * nsname )

References init_nssocket(), mnl_nssocket_open(), MNL_SOCKET_AUTOPID, mnl_socket_bind(), mnl_socket_close(), NETLINK_NETFILTER, NF_NETLINK_CONNTRACK_DESTROY, NF_NETLINK_CONNTRACK_NEW, NF_NETLINK_CONNTRACK_UPDATE, NULL, and parent_fail.

Referenced by main().

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struct mnl_socket* mnl_nssocket_open ( int bus )

References mnl_socket::fd, mnl_socket_fdopen(), nssocket(), and NULL.

Referenced by mnl_event_nssocket().

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int nssocket	(	int	domain,
		int	type,
		int	protocol
	)

References child_pid, CMD_SOCKET, PARENT_FD, rx_fd(), tx(), and type.

Referenced by mnl_nssocket_open().

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ssize_t rx	(	int	fd,
		int *	cmd,
		uint8_t	cmdlen,
		int *	cdata
	)

References NULL.

Referenced by mpz_and(), mpz_ior(), mpz_xor(), rx_cmd(), and rx_fd().

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int rx_cmd ( int fd )

References NULL, and rx().

Referenced by init_nssocket().

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int rx_fd ( int fd1 )

References rx().

Referenced by nssocket().

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void sync_fifo ( const char * name )

References parent_fail.

Referenced by tcp_echo().

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void tcp_echo	(	const struct mnl_socket *	nl,
		const char *	pre,
		const char *	post
	)

References cb_tcp_close(), cb_tcp_close_wait(), cb_tcp_destroy(), cb_tcp_established(), cb_tcp_fin_wait(), cb_tcp_new(), cb_tcp_syn_recv(), handle_qacb(), NULL, sync_fifo(), and timeout.

Referenced by main().

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ssize_t tx	(	int	fd,
		int *	cmd,
		uint8_t	cmdlen,
		int	cdata
	)

Referenced by nssocket(), tx_cmd(), and tx_fd().

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int tx_cmd	(	int	fd,
		int	cmd
	)

References tx().

Referenced by fini_nssocket().

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int tx_fd	(	int	fd1,
		int	fd2,
		int	e
	)

References tx().

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Variable Documentation

pid_t children[MAX_CHILD]

Referenced by add_child().

int nchild

Referenced by add_child().

struct timeval timeout

Referenced by author_new(), author_update(), handle_qacb(), nfnl_ct_set_timeout(), nfnl_log_set_flush_timeout(), nl_cli_ct_parse_timeout(), and tcp_echo().

Macros

Enumerations

Functions

Variables

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation