datagram_fnc.c File Reference

MI_DATAGRAM :: Datagram functions. More...

#include <arpa/inet.h>
#include <errno.h>
#include <fcntl.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/un.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <signal.h>
#include "../../resolve.h"
#include "mi_datagram.h"
#include "datagram_fnc.h"
#include "mi_datagram_parser.h"
#include "mi_datagram_writer.h"

Include dependency graph for datagram_fnc.c:

Go to the source code of this file.

Defines
#define	AF_LOCAL   AF_UNIX
#define	mi_create_dtgram_replysocket(_socketfd, _socket_domain, _err)
#define	SUN_LEN(sa)
Functions
static struct mi_handler *	build_async_handler (unsigned int sock_domain, struct sockaddr *reply_addr, unsigned int reply_addr_len)
static void	datagram_close_async (struct mi_root *mi_rpl, struct mi_handler *hdl, int done)
static void	free_async_handler (struct mi_handler *hdl)
static int	identify_command (datagram_stream *dtgram, struct mi_cmd **f)
void	mi_datagram_server (int rx_sock, int tx_sock)
int	mi_init_datagram_buffer (void)
int	mi_init_datagram_server (sockaddr_dtgram *addr, unsigned int socket_domain, rx_tx_sockets *socks, int mode, int uid, int gid)
static int	mi_send_dgram (int fd, char *buf, unsigned int len, const struct sockaddr *to, int tolen, int timeout)
static int	mi_sock_check (int fd, char *fname)
	reply socket security checks: checks if fd is a socket, is not hardlinked and it's not a softlink opened file descriptor + file name (for soft link check)
Variables
int	flags
static char *	mi_buf = 0
static unsigned int	mi_socket_domain
int	mi_socket_timeout
union {
struct sockaddr_in   in
struct sockaddr_un   un
}	reply_addr
static unsigned int	reply_addr_len

---

Detailed Description

MI_DATAGRAM :: Datagram functions.

Definition in file datagram_fnc.c.

---

Define Documentation

#define AF_LOCAL   AF_UNIX

Definition at line 63 of file datagram_fnc.c.

#define mi_create_dtgram_replysocket	(	_socketfd,
		_socket_domain,
		_err		)

Definition at line 81 of file datagram_fnc.c.

Referenced by datagram_close_async(), and mi_init_datagram_server().

#define SUN_LEN

(

sa

)

Value:

( strlen((sa)->sun_path) + \
                (size_t)(((struct sockaddr_un*)0)->sun_path) )

Definition at line 58 of file datagram_fnc.c.

Referenced by mi_init_datagram_server(), and write_to_unixsock().

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Function Documentation

static struct mi_handler* build_async_handler	(	unsigned int	sock_domain,
		struct sockaddr *	reply_addr,
		unsigned int	reply_addr_len
	)			[static, read]

Definition at line 381 of file datagram_fnc.c.

References my_socket_address::address, my_socket_address::address_len, AF_LOCAL, datagram_close_async(), my_socket_address::domain, mi_handler::handler_f, my_sock_address::inet_v4, my_sock_address::inet_v6, LM_CRIT, LM_DBG, LM_ERR, NULL, mi_handler::param, shm_free, shm_malloc(), and my_sock_address::unix_deb.

static void datagram_close_async	(	struct mi_root *	mi_rpl,
		struct mi_handler *	hdl,
		int	done
	)			[static]

Definition at line 325 of file datagram_fnc.c.

References my_socket_address::address, my_socket_address::address_len, AF_LOCAL, datagram_str::current, DATAGRAM_SOCK_BUF_SIZE, my_socket_address::domain, free_async_handler(), free_mi_tree(), LM_DBG, LM_ERR, MI_COMMAND_FAILED, MI_COMMAND_FAILED_LEN, mi_create_dtgram_replysocket, mi_datagram_write_tree(), mi_send_dgram(), mi_socket_timeout, mi_handler::param, pkg_free, pkg_malloc, reply_addr, reply_addr_len, and datagram_str::start.

Referenced by build_async_handler().

static void free_async_handler

(

struct mi_handler *

hdl

)

[inline, static]

Definition at line 318 of file datagram_fnc.c.

References shm_free.

static int identify_command	(	datagram_stream *	dtgram,
		struct mi_cmd **	f
	)			[static]

Definition at line 263 of file datagram_fnc.c.

References datagram_str::current, datagram_str::len, LM_DBG, LM_ERR, lookup_mi_cmd(), MI_CMD_SEPARATOR, and datagram_str::start.

Referenced by mi_datagram_server().

void mi_datagram_server	(	int	rx_sock,
		int	tx_sock
	)

Definition at line 423 of file datagram_fnc.c.

References mi_root::async_hdl, build_async_handler(), datagram_str::current, DATAGRAM_SOCK_BUF_SIZE, mi_cmd::f, mi_cmd::flags, free_async_handler(), free_mi_tree(), identify_command(), datagram_str::len, len, LM_DBG, LM_ERR, MI_ASYNC_RPL_FLAG, mi_buf, MI_COMMAND_AVAILABLE_LEN, MI_COMMAND_FAILED, MI_COMMAND_FAILED_LEN, MI_COMMAND_NOT_AVAILABLE, mi_datagram_parse_tree(), mi_datagram_write_tree(), MI_INTERNAL_ERROR, MI_INTERNAL_ERROR_LEN, MI_NO_INPUT_FLAG, MI_PARSE_ERROR, MI_PARSE_ERROR_LEN, MI_ROOT_ASYNC_RPL, mi_send_dgram(), mi_socket_domain, mi_socket_timeout, mi_cmd::name, NULL, reply_addr, reply_addr_len, run_mi_cmd(), _str::s, and datagram_str::start.

Referenced by datagram_process().

int mi_init_datagram_buffer

(

void

)

Definition at line 175 of file datagram_fnc.c.

References DATAGRAM_SOCK_BUF_SIZE, LM_ERR, mi_buf, NULL, and pkg_malloc.

Referenced by datagram_process().

int mi_init_datagram_server	(	sockaddr_dtgram *	addr,
		unsigned int	socket_domain,
		rx_tx_sockets *	socks,
		int	mode,
		int	uid,
		int	gid
	)

Definition at line 99 of file datagram_fnc.c.

References AF_LOCAL, LM_DBG, LM_ERR, mi_create_dtgram_replysocket, mi_sock_check(), mi_socket_domain, rx_tx::rx_sock, sockaddr_union::s, sockaddru_len, SUN_LEN, rx_tx::tx_sock, sockaddr_dtgram::udp_addr, and sockaddr_dtgram::unix_addr.

Referenced by pre_datagram_process().

static int mi_send_dgram	(	int	fd,
		char *	buf,
		unsigned int	len,
		const struct sockaddr *	to,
		int	tolen,
		int	timeout
	)			[static]

Definition at line 237 of file datagram_fnc.c.

References DATAGRAM_SOCK_BUF_SIZE, and LM_DBG.

Referenced by datagram_close_async(), and mi_datagram_server().

int mi_sock_check	(	int	fd,
		char *	fname
	)			[static]

reply socket security checks: checks if fd is a socket, is not hardlinked and it's not a softlink opened file descriptor + file name (for soft link check)

Returns:

0 if ok, <0 if not

Definition at line 189 of file datagram_fnc.c.

References LM_ERR.

Referenced by mi_init_datagram_server().

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Variable Documentation

int flags

Definition at line 66 of file datagram_fnc.c.

struct sockaddr_in in

Definition at line 71 of file datagram_fnc.c.

Referenced by pv_table_add().

char* mi_buf = 0 [static]

Definition at line 67 of file datagram_fnc.c.

unsigned int mi_socket_domain [static]

Definition at line 77 of file datagram_fnc.c.

Referenced by mi_datagram_server(), mi_destroy(), mi_init_datagram_server(), mi_mod_init(), and pre_datagram_process().

int mi_socket_timeout

Timeout for sending replies in milliseconds

Definition at line 90 of file mi_datagram.c.

Referenced by datagram_close_async(), and mi_datagram_server().

union { ... } reply_addr [static]

Referenced by datagram_close_async(), and mi_datagram_server().

unsigned int reply_addr_len [static]

Definition at line 74 of file datagram_fnc.c.

Referenced by datagram_close_async(), and mi_datagram_server().

struct sockaddr_un un

Definition at line 70 of file datagram_fnc.c.