down-root.c File Reference

#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <fcntl.h>
#include <signal.h>
#include <syslog.h>
#include <errno.h>
#include <err.h>
#include <openvpn-plugin.h>

Include dependency graph for down-root.c:

Go to the source code of this file.

Data Structures
struct	down_root_context

Macros
#define	DEBUG(verb)   ((verb) >= 7)
#define	COMMAND_RUN_SCRIPT   1
#define	COMMAND_EXIT   2
#define	RESPONSE_INIT_SUCCEEDED   10
#define	RESPONSE_INIT_FAILED   11
#define	RESPONSE_SCRIPT_SUCCEEDED   12
#define	RESPONSE_SCRIPT_FAILED   13

Functions
static void	down_root_server (const int fd, char *const *argv, char *const *envp, const int verb)
static const char *	get_env (const char *name, const char *envp[])
static size_t	string_array_len (const char *array[])
static int	recv_control (int fd)
static ssize_t	send_control (int fd, int code)
static void	daemonize (const char *envp[])
static void	close_fds_except (int keep)
static void	set_signals (void)
static void	free_context (struct down_root_context *context)
static int	run_script (char *const *argv, char *const *envp)
OPENVPN_EXPORT openvpn_plugin_handle_t	openvpn_plugin_open_v1 (unsigned int *type_mask, const char *argv[], const char *envp[])
OPENVPN_EXPORT int	openvpn_plugin_func_v1 (openvpn_plugin_handle_t handle, const int type, const char *argv[], const char *envp[])
OPENVPN_EXPORT void	openvpn_plugin_close_v1 (openvpn_plugin_handle_t handle)
OPENVPN_EXPORT void	openvpn_plugin_abort_v1 (openvpn_plugin_handle_t handle)

Macro Definition Documentation

COMMAND_EXIT

#define COMMAND_EXIT   2

Definition at line 51 of file down-root.c.

COMMAND_RUN_SCRIPT

#define COMMAND_RUN_SCRIPT   1

Definition at line 50 of file down-root.c.

DEBUG

#define DEBUG

(

verb

)

((verb) >= 7)

Definition at line 47 of file down-root.c.

RESPONSE_INIT_FAILED

#define RESPONSE_INIT_FAILED   11

Definition at line 55 of file down-root.c.

RESPONSE_INIT_SUCCEEDED

#define RESPONSE_INIT_SUCCEEDED   10

Definition at line 54 of file down-root.c.

RESPONSE_SCRIPT_FAILED

#define RESPONSE_SCRIPT_FAILED   13

Definition at line 57 of file down-root.c.

RESPONSE_SCRIPT_SUCCEEDED

#define RESPONSE_SCRIPT_SUCCEEDED   12

Definition at line 56 of file down-root.c.

Function Documentation

close_fds_except()

static void close_fds_except ( int  keep )

static

Definition at line 204 of file down-root.c.

References i.

Referenced by openvpn_plugin_func_v1().

daemonize()

static void daemonize ( const char *  envp[] )

static

Definition at line 163 of file down-root.c.

References daemon(), and get_env().

Referenced by openvpn_plugin_func_v1(), and openvpn_plugin_open_v3().

down_root_server()

static void down_root_server ( const int  fd, char *const *  argv, char *const *  envp, const int  verb  )

static

Definition at line 494 of file down-root.c.

References COMMAND_EXIT, COMMAND_RUN_SCRIPT, DEBUG, recv_control(), RESPONSE_INIT_SUCCEEDED, RESPONSE_SCRIPT_FAILED, RESPONSE_SCRIPT_SUCCEEDED, run_script(), send_control(), and down_root_context::verb.

Referenced by openvpn_plugin_func_v1().

free_context()

static void free_context ( struct down_root_context *  context )

static

Definition at line 235 of file down-root.c.

Referenced by openvpn_plugin_close_v1(), and openvpn_plugin_open_v1().

get_env()

static const char * get_env ( const char *  name, const char *  envp[]  )

static

Definition at line 86 of file down-root.c.

References i.

Referenced by daemonize(), and openvpn_plugin_open_v1().

openvpn_plugin_abort_v1()

OPENVPN_EXPORT void openvpn_plugin_abort_v1

(

openvpn_plugin_handle_t

handle

)

Definition at line 477 of file down-root.c.

References COMMAND_EXIT, and send_control().

openvpn_plugin_close_v1()

OPENVPN_EXPORT void openvpn_plugin_close_v1

(

openvpn_plugin_handle_t

handle

)

Definition at line 446 of file down-root.c.

References COMMAND_EXIT, DEBUG, free_context(), and send_control().

openvpn_plugin_func_v1()

OPENVPN_EXPORT int openvpn_plugin_func_v1	(	openvpn_plugin_handle_t	handle,
		const int	type,
		const char *	argv[],
		const char *	envp[]
	)

Definition at line 345 of file down-root.c.

References close_fds_except(), COMMAND_RUN_SCRIPT, daemonize(), down_root_server(), recv_control(), RESPONSE_INIT_SUCCEEDED, RESPONSE_SCRIPT_SUCCEEDED, send_control(), set_signals(), and status.

openvpn_plugin_open_v1()

OPENVPN_EXPORT openvpn_plugin_handle_t openvpn_plugin_open_v1	(	unsigned int *	type_mask,
		const char *	argv[],
		const char *	envp[]
	)

Definition at line 280 of file down-root.c.

References free_context(), get_env(), i, and string_array_len().

recv_control()

static int recv_control ( int  fd )

static

Definition at line 128 of file down-root.c.

References read.

Referenced by down_root_server(), and openvpn_plugin_func_v1().

run_script()

static int run_script ( char *const *  argv, char *const *  envp  )

static

Definition at line 249 of file down-root.c.

Referenced by down_root_server().

send_control()

static ssize_t send_control ( int  fd, int  code  )

static

Definition at line 143 of file down-root.c.

References write.

Referenced by down_root_server(), openvpn_plugin_abort_v1(), openvpn_plugin_close_v1(), and openvpn_plugin_func_v1().

set_signals()

static void set_signals ( void  )

static

Definition at line 222 of file down-root.c.

Referenced by openvpn_plugin_func_v1().

string_array_len()

static size_t string_array_len ( const char *  array[] )

static

Definition at line 110 of file down-root.c.

References i.

Referenced by openvpn_plugin_open_v1().