tun.c File Reference

#include "syshead.h"
#include "openvpn.h"
#include "tun.h"
#include "fdmisc.h"
#include "common.h"
#include "run_command.h"
#include "socket_util.h"
#include "manage.h"
#include "route.h"
#include "win32.h"
#include "wfp_block.h"
#include "networking.h"
#include "dhcp.h"
#include "memdbg.h"
#include "openvpn-msg.h"
#include <string.h>

Include dependency graph for tun.c:

Go to the source code of this file.

Data Structures
struct	ipset_names

Macros
#define	NI_TEST_FIRST   (1 << 0)
#define	NI_IP_NETMASK   (1 << 1)
#define	NI_OPTIONS   (1 << 2)
#define	DHCP_STATUS_UNDEF   0
#define	DHCP_STATUS_ENABLED   1
#define	DHCP_STATUS_DISABLED   2

Functions
const char *	print_tun_backend_driver (enum tun_driver_type driver)
	Return a string representation of the tun backed driver type.
static void	netsh_ifconfig (const struct tuntap_options *to, DWORD adapter_index, const in_addr_t ip, const in_addr_t netmask, const unsigned int flags)
static void	windows_set_mtu (const int iface_index, const short family, const int mtu)
static void	netsh_set_dns6_servers (const struct in6_addr *addr_list, const int addr_len, DWORD adapter_index)
	Set the ipv6 dns servers on the specified interface.
static void	netsh_command (const struct argv *a, int n, msglvl_t msglevel)
static void	exec_command (const char *prefix, const struct argv *a, int n, msglvl_t msglevel)
static const char *	netsh_get_id (const char *dev_node, struct gc_arena *gc)
static bool	do_address_service (const bool add, const short family, const struct tuntap *tt)
static void	do_dns_domain_service (bool add, const struct tuntap *tt)
static void	do_dns_service (bool add, const short family, const struct tuntap *tt)
static void	do_wins_service (bool add, const struct tuntap *tt)
static bool	do_set_mtu_service (const struct tuntap *tt, const short family, const int mtu)
static void	do_dns_domain_pwsh (bool add, const struct tuntap *tt)
static bool	do_create_adapter_service (HANDLE msg_channel, enum tun_driver_type driver_type)
	Requests the interactive service to create a VPN adapter of the specified type.
static void	clear_tuntap (struct tuntap *tuntap)
bool	is_dev_type (const char *dev, const char *dev_type, const char *match_type)
int	dev_type_enum (const char *dev, const char *dev_type)
const char *	dev_type_string (const char *dev, const char *dev_type)
const char *	guess_tuntap_dev (const char *dev, const char *dev_type, const char *dev_node, struct gc_arena *gc)
static void	ifconfig_sanity_check (bool tun_p2p, in_addr_t addr)
static void	check_addr_clash (const char *name, int type, in_addr_t public, in_addr_t local, in_addr_t remote_netmask)
void	warn_on_use_of_common_subnets (openvpn_net_ctx_t *ctx)
const char *	ifconfig_options_string (const struct tuntap *tt, bool remote, bool disable, struct gc_arena *gc)
const char *	tun_stat (const struct tuntap *tt, unsigned int rwflags, struct gc_arena *gc)
bool	is_tun_p2p (const struct tuntap *tt)
void	do_ifconfig_setenv (const struct tuntap *tt, struct env_set *es)
struct tuntap *	init_tun (const char *dev, const char *dev_type, int topology, const char *ifconfig_local_parm, const char *ifconfig_remote_netmask_parm, const char *ifconfig_ipv6_local_parm, int ifconfig_ipv6_netbits_parm, const char *ifconfig_ipv6_remote_parm, struct addrinfo *local_public, struct addrinfo *remote_public, const bool strict_warn, struct env_set *es, openvpn_net_ctx_t *ctx, struct tuntap *tt)
void	init_tun_post (struct tuntap *tt, const struct frame *frame, const struct tuntap_options *options)
static void	add_route_connected_v6_net (struct tuntap *tt, const struct env_set *es)
void	delete_route_connected_v6_net (const struct tuntap *tt)
static void	do_ifconfig_ipv6 (struct tuntap *tt, const char *ifname, int tun_mtu, const struct env_set *es, openvpn_net_ctx_t *ctx)
	do_ifconfig_ipv6 - perform platform specific ifconfig6 commands
static void	do_ifconfig_ipv4 (struct tuntap *tt, const char *ifname, int tun_mtu, const struct env_set *es, openvpn_net_ctx_t *ctx)
	do_ifconfig_ipv4 - perform platform specific ifconfig commands
void	do_ifconfig (struct tuntap *tt, const char *ifname, int tun_mtu, const struct env_set *es, openvpn_net_ctx_t *ctx)
	do_ifconfig - configure the tunnel interface
static void	undo_ifconfig_ipv4 (struct tuntap *tt, openvpn_net_ctx_t *ctx)
static void	undo_ifconfig_ipv6 (struct tuntap *tt, openvpn_net_ctx_t *ctx)
void	undo_ifconfig (struct tuntap *tt, openvpn_net_ctx_t *ctx)
	undo_ifconfig - undo configuration of the tunnel interface
bool	tun_name_is_fixed (const char *dev)
int	tun_read_queue (struct tuntap *tt, int maxsize)
int	tun_write_queue (struct tuntap *tt, struct buffer *buf)
int	tun_write_win32 (struct tuntap *tt, struct buffer *buf)
static const struct device_instance_id_interface *	get_device_instance_id_interface (struct gc_arena *gc)
static const struct tap_reg *	get_tap_reg (struct gc_arena *gc)
static const struct panel_reg *	get_panel_reg (struct gc_arena *gc)
void	verify_255_255_255_252 (in_addr_t local, in_addr_t remote)
void	show_valid_win32_tun_subnets (void)
void	show_tap_win_adapters (msglvl_t msglevel, msglvl_t warnlevel)
static const struct tap_reg *	get_adapter_by_guid (const char *guid, const struct tap_reg *tap_reg)
static const char *	guid_to_name (const char *guid, const struct panel_reg *panel_reg)
static const struct tap_reg *	get_adapter_by_name (const char *name, const struct tap_reg *tap_reg, const struct panel_reg *panel_reg)
static void	at_least_one_tap_win (const struct tap_reg *tap_reg)
static const char *	get_unspecified_device_guid (const int device_number, uint8_t *actual_name, int actual_name_size, const struct tap_reg *tap_reg_src, const struct panel_reg *panel_reg_src, enum tun_driver_type *windows_driver, struct gc_arena *gc)
static const char *	get_device_guid (const char *name, uint8_t *actual_name, int actual_name_size, enum tun_driver_type *windows_driver, const struct tap_reg *tap_reg, const struct panel_reg *panel_reg, struct gc_arena *gc)
const IP_ADAPTER_INFO *	get_adapter_info_list (struct gc_arena *gc)
const IP_PER_ADAPTER_INFO *	get_per_adapter_info (const DWORD index, struct gc_arena *gc)
static const IP_INTERFACE_INFO *	get_interface_info_list (struct gc_arena *gc)
static const IP_ADAPTER_INDEX_MAP *	get_interface_info (DWORD index, struct gc_arena *gc)
const IP_ADAPTER_INFO *	get_adapter (const IP_ADAPTER_INFO *ai, DWORD index)
const IP_ADAPTER_INFO *	get_adapter_info (DWORD index, struct gc_arena *gc)
static int	get_adapter_n_ip_netmask (const IP_ADAPTER_INFO *ai)
static bool	get_adapter_ip_netmask (const IP_ADAPTER_INFO *ai, const int n, in_addr_t *ip, in_addr_t *netmask)
static bool	test_adapter_ip_netmask (const IP_ADAPTER_INFO *ai, const in_addr_t ip, const in_addr_t netmask)
const IP_ADAPTER_INFO *	get_tun_adapter (const struct tuntap *tt, const IP_ADAPTER_INFO *list)
bool	is_adapter_up (const struct tuntap *tt, const IP_ADAPTER_INFO *list)
bool	is_ip_in_adapter_subnet (const IP_ADAPTER_INFO *ai, const in_addr_t ip, in_addr_t *highest_netmask)
DWORD	adapter_index_of_ip (const IP_ADAPTER_INFO *list, const in_addr_t ip, int *count, in_addr_t *netmask)
static int	dhcp_status (DWORD index)
static void	delete_temp_addresses (DWORD index)
static DWORD	get_adapter_index_method_1 (const char *guid)
static DWORD	get_adapter_index_method_2 (const char *guid)
static DWORD	get_adapter_index (const char *guid)
static const char *	format_ip_addr_string (const IP_ADDR_STRING *ip, struct gc_arena *gc)
static void	show_adapter (msglvl_t msglevel, const IP_ADAPTER_INFO *a, struct gc_arena *gc)
void	show_adapters (msglvl_t msglevel)
static void	tap_allow_nonadmin_access_handle (const char *device_path, HANDLE hand)
void	tap_allow_nonadmin_access (const char *dev_node)
bool	dhcp_release_by_adapter_index (const DWORD adapter_index)
static bool	dhcp_release (const struct tuntap *tt)
bool	dhcp_renew_by_adapter_index (const DWORD adapter_index)
static bool	dhcp_renew (const struct tuntap *tt)
void	ipconfig_register_dns (const struct env_set *es)
void	ip_addr_string_to_array (in_addr_t *dest, int *dest_len, const IP_ADDR_STRING *src)
static bool	ip_addr_one_to_one (const in_addr_t *a1, const int a1len, const IP_ADDR_STRING *ias)
static bool	ip_addr_member_of (const in_addr_t addr, const IP_ADDR_STRING *ias)
static void	netsh_ifconfig_options (const char *type, const in_addr_t *addr_list, const int addr_len, const IP_ADDR_STRING *current, DWORD adapter_index, const bool test_first)
static void	init_ip_addr_string2 (IP_ADDR_STRING *dest, const IP_ADDR_STRING *src1, const IP_ADDR_STRING *src2)
static void	netsh_enable_dhcp (DWORD adapter_index)
static bool	service_enable_dhcp (const struct tuntap *tt)
void	tun_standby_init (struct tuntap *tt)
bool	tun_standby (struct tuntap *tt)
static void	fork_dhcp_action (struct tuntap *tt)
static void	register_dns_service (const struct tuntap *tt)
void	fork_register_dns_action (struct tuntap *tt)
static uint32_t	dhcp_masq_addr (const in_addr_t local, const in_addr_t netmask, const int offset)
static void	tuntap_get_version_info (const struct tuntap *tt)
static void	tuntap_get_mtu (struct tuntap *tt)
static void	tuntap_set_ip_addr (struct tuntap *tt, const char *device_guid, bool dhcp_masq_post)
static void	tuntap_set_connected (const struct tuntap *tt)
static void	tuntap_set_ptp (const struct tuntap *tt)
static void	tuntap_dhcp_mask (const struct tuntap *tt, const char *device_guid)
static bool	tun_try_open_device (struct tuntap *tt, const char *device_guid, const struct device_instance_id_interface *device_instance_id_interface)
void	tun_open_device (struct tuntap *tt, const char *dev_node, const char **device_guid, struct gc_arena *gc)
static void	tuntap_set_ip_props (const struct tuntap *tt, bool *dhcp_masq, bool *dhcp_masq_post)
static void	tuntap_post_open (struct tuntap *tt, const char *device_guid)
void	open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt, openvpn_net_ctx_t *ctx)
const char *	tap_win_getinfo (const struct tuntap *tt, struct gc_arena *gc)
void	tun_show_debug (struct tuntap *tt)
static void	netsh_delete_address_dns (const struct tuntap *tt, bool ipv6, struct gc_arena *gc)
void	close_tun_handle (struct tuntap *tt)
void	close_tun (struct tuntap *tt, openvpn_net_ctx_t *ctx)
int	ascii2ipset (const char *name)
const char *	ipset2ascii (int index)
const char *	ipset2ascii_all (struct gc_arena *gc)

Variables
static const GUID	GUID_DEVCLASS_NET
static const GUID	GUID_DEVINTERFACE_NET
static const char	ifconfig_warn_how_to_silence [] = "(silence this warning with --ifconfig-nowarn)"
static const struct ipset_names	ipset_names []

Macro Definition Documentation

DHCP_STATUS_DISABLED

#define DHCP_STATUS_DISABLED   2

Definition at line 4696 of file tun.c.

DHCP_STATUS_ENABLED

#define DHCP_STATUS_ENABLED   1

Definition at line 4695 of file tun.c.

DHCP_STATUS_UNDEF

#define DHCP_STATUS_UNDEF   0

Definition at line 4694 of file tun.c.

NI_IP_NETMASK

#define NI_IP_NETMASK   (1 << 1)

Definition at line 98 of file tun.c.

NI_OPTIONS

#define NI_OPTIONS   (1 << 2)

Definition at line 99 of file tun.c.

NI_TEST_FIRST

#define NI_TEST_FIRST   (1 << 0)

Definition at line 97 of file tun.c.

Function Documentation

adapter_index_of_ip()

DWORD adapter_index_of_ip	(	const IP_ADAPTER_INFO *	list,
		const in_addr_t	ip,
		int *	count,
		in_addr_t *	netmask
	)

Definition at line 4621 of file tun.c.

References D_ROUTE_DEBUG, dmsg, gc, gc_free(), gc_new(), get_interface_metric(), is_ip_in_adapter_subnet(), gc_arena::list, print_in_addr_t(), and TUN_ADAPTER_INDEX_INVALID.

Referenced by test_route().

add_route_connected_v6_net()

static void add_route_connected_v6_net ( struct tuntap *  tt, const struct env_set *  es  )

static

Definition at line 981 of file tun.c.

References add_route_ipv6(), CLEAR, es, tuntap::local_ipv6, tuntap::netbits_ipv6, r6, RT_DEFINED, and RT_METRIC_DEFINED.

Referenced by do_ifconfig_ipv6().

ascii2ipset()

int ascii2ipset

(

const char *

name

)

Definition at line 6477 of file tun.c.

References ASSERT, i, IPW32_SET_N, ipset_names::short_form, and SIZE.

Referenced by add_option().

at_least_one_tap_win()

static void at_least_one_tap_win ( const struct tap_reg *  tap_reg )

static

Definition at line 4176 of file tun.c.

References M_FATAL, and msg.

Referenced by netsh_get_id(), and tap_allow_nonadmin_access().

check_addr_clash()

static void check_addr_clash ( const char *  name, int  type, in_addr_t  public, in_addr_t  local, in_addr_t  remote_netmask  )

static

Definition at line 616 of file tun.c.

References DEV_TYPE_TAP, DEV_TYPE_TUN, gc, gc_free(), gc_new(), ifconfig_warn_how_to_silence, M_INFO, M_WARN, msg, and print_in_addr_t().

Referenced by init_tun().

clear_tuntap()

static void clear_tuntap ( struct tuntap *  tuntap )

static

Definition at line 1675 of file tun.c.

References CLEAR, and tuntap::hand.

Referenced by close_tun(), and init_tun().

close_tun()

void close_tun	(	struct tuntap *	tt,
		openvpn_net_ctx_t *	ctx
	)

Definition at line 6377 of file tun.c.

References tuntap::actual_name, ASSERT, clear_tuntap(), close_tun_handle(), delete_route_connected_v6_net(), dhcp_release(), tuntap::did_ifconfig_ipv6_setup, tuntap::did_ifconfig_setup, do_address_service(), do_dns_domain_pwsh(), do_dns_domain_service(), do_dns_service(), do_wins_service(), gc, gc_free(), gc_new(), tuntap_options::ip_win32_type, tuntap::ipapi_context, tuntap::ipapi_context_defined, IPW32_SET_ADAPTIVE, IPW32_SET_DHCP_MASQ, IPW32_SET_MANUAL, IPW32_SET_NETSH, M_WARN, msg, tuntap_options::msg_channel, netsh_delete_address_dns(), tuntap::options, status, and strerror_win32().

Referenced by do_close_tun_simple().

close_tun_handle()

void close_tun_handle

(

struct tuntap *

tt

)

Definition at line 6346 of file tun.c.

References tuntap::backend_driver, D_WIN32_IO_LOW, dmsg, tuntap::hand, M_ERRNO, M_WARN, msg, overlapped_io_close(), print_tun_backend_driver(), tuntap::reads, and tuntap::writes.

Referenced by close_tun().

delete_route_connected_v6_net()

void delete_route_connected_v6_net

(

const struct tuntap *

tt

)

Definition at line 995 of file tun.c.

References CLEAR, delete_route_ipv6(), tuntap::local_ipv6, tuntap::netbits_ipv6, r6, route_ipv6_clear_host_bits(), RT_ADDED, RT_DEFINED, and RT_METRIC_DEFINED.

Referenced by close_tun(), and netsh_delete_address_dns().

delete_temp_addresses()

static void delete_temp_addresses ( DWORD  index )

static

Definition at line 4728 of file tun.c.

References gc, gc_free(), gc_new(), get_adapter_info(), M_INFO, msg, and status.

Referenced by tuntap_set_ip_addr().

dev_type_enum()

int dev_type_enum	(	const char *	dev,
		const char *	dev_type
	)

Definition at line 521 of file tun.c.

References DEV_TYPE_TAP, DEV_TYPE_TUN, DEV_TYPE_UNDEF, and is_dev_type().

Referenced by dev_type_string(), do_init_route_list(), do_persist_tuntap(), guess_tuntap_dev(), helper_client_server(), helper_setdefault_topology(), init_tun(), multi_init(), options_postprocess_mutate_ce(), options_postprocess_mutate_invariant(), and options_postprocess_verify_ce().

dev_type_string()

const char * dev_type_string	(	const char *	dev,
		const char *	dev_type
	)

Definition at line 540 of file tun.c.

References dev_type_enum(), DEV_TYPE_TAP, and DEV_TYPE_TUN.

Referenced by do_open_tun(), open_tun_afunix(), and options_string().

dhcp_masq_addr()

static uint32_t dhcp_masq_addr ( const in_addr_t  local, const in_addr_t  netmask, const int  offset  )

static

Definition at line 5633 of file tun.c.

References gc, gc_free(), gc_new(), M_FATAL, msg, and print_in_addr_t().

Referenced by tuntap_dhcp_mask().

dhcp_release()

static bool dhcp_release ( const struct tuntap *  tt )

static

Definition at line 5035 of file tun.c.

References tuntap::adapter_index, dhcp_release_by_adapter_index(), tuntap_options::ip_win32_type, IPW32_SET_DHCP_MASQ, tuntap::options, and TUN_ADAPTER_INDEX_INVALID.

Referenced by close_tun(), and tuntap_set_ip_addr().

dhcp_release_by_adapter_index()

bool dhcp_release_by_adapter_index

(

const DWORD

adapter_index

)

Definition at line 5008 of file tun.c.

References D_TUNTAP_INFO, gc, gc_free(), gc_new(), get_interface_info(), M_WARN, msg, status, and strerror_win32().

Referenced by add_option(), and dhcp_release().

dhcp_renew()

static bool dhcp_renew ( const struct tuntap *  tt )

static

Definition at line 5075 of file tun.c.

References tuntap::adapter_index, dhcp_renew_by_adapter_index(), tuntap_options::ip_win32_type, IPW32_SET_DHCP_MASQ, tuntap::options, and TUN_ADAPTER_INDEX_INVALID.

Referenced by show_tuntap_options(), and tuntap_set_ip_addr().

dhcp_renew_by_adapter_index()

bool dhcp_renew_by_adapter_index

(

const DWORD

adapter_index

)

Definition at line 5049 of file tun.c.

References D_TUNTAP_INFO, gc, gc_free(), gc_new(), get_interface_info(), M_WARN, msg, status, and strerror_win32().

Referenced by add_option(), and dhcp_renew().

dhcp_status()

static int dhcp_status ( DWORD  index )

static

Definition at line 4699 of file tun.c.

References DHCP_STATUS_DISABLED, DHCP_STATUS_ENABLED, DHCP_STATUS_UNDEF, gc, gc_free(), gc_new(), get_adapter_info(), and TUN_ADAPTER_INDEX_INVALID.

Referenced by tuntap_set_ip_addr(), and tuntap_set_ip_props().

do_address_service()

static bool do_address_service ( const bool  add, const short  family, const struct tuntap *  tt  )

static

Definition at line 116 of file tun.c.

References tuntap::actual_name, tuntap::adapter_index, tuntap::adapter_netmask, address_message_t::address, D_IFCONFIG, DEV_TYPE_TUN, ack_message_t::error_number, address_message_t::family, gc, gc_free(), gc_new(), address_message_t::header, address_message_t::iface, interface_t::index, inet_address_t::ipv4, inet_address_t::ipv6, tuntap::local, tuntap::local_ipv6, M_WARN, msg, msg_add_address, tuntap_options::msg_channel, msg_del_address, interface_t::name, tuntap::netbits_ipv6, netmask_to_netbits2(), tuntap::options, address_message_t::prefix_len, print_in6_addr(), print_in_addr_t(), send_msg_iservice(), strerror_win32(), TUN_ADAPTER_INDEX_INVALID, and tuntap::type.

Referenced by close_tun(), do_ifconfig_ipv4(), and do_ifconfig_ipv6().

do_create_adapter_service()

static bool do_create_adapter_service ( HANDLE  msg_channel, enum tun_driver_type  driver_type  )

static

Requests the interactive service to create a VPN adapter of the specified type.

Parameters

msg_channel	Handle to the interactive service communication pipe.
driver_type	Adapter type to create (e.g., TAP, Wintun, DCO).

Returns

true on success, false on failure.

Definition at line 437 of file tun.c.

References ADAPTER_TYPE_DCO, ADAPTER_TYPE_TAP, DRIVER_DCO, ack_message_t::error_number, gc, gc_free(), gc_new(), create_adapter_message_t::header, M_INFO, M_NONFATAL, msg, msg_create_adapter, print_tun_backend_driver(), send_msg_iservice(), strerror_win32(), and WINDOWS_DRIVER_TAP_WINDOWS6.

Referenced by tun_open_device().

do_dns_domain_pwsh()

static void do_dns_domain_pwsh ( bool  add, const struct tuntap *  tt  )

static

Definition at line 409 of file tun.c.

References tuntap::adapter_index, argv_free(), argv_new(), argv_printf(), tuntap_options::domain, exec_command(), get_win_sys_path(), M_WARN, tuntap::options, and POWERSHELL_PATH_SUFFIX.

Referenced by close_tun(), do_ifconfig_ipv4(), and do_ifconfig_ipv6().

do_dns_domain_service()

static void do_dns_domain_service ( bool  add, const struct tuntap *  tt  )

static

Definition at line 170 of file tun.c.

References tuntap::actual_name, tuntap::adapter_index, D_LOW, tuntap_options::dns, tuntap_options::domain, tuntap_options::domain_search_list, ack_message_t::error_number, gc, gc_free(), gc_new(), dns_cfg_message_t::header, i, M_INFO, M_WARN, msg, msg_add_dns_cfg, tuntap_options::msg_channel, msg_del_dns_cfg, N_SEARCH_LIST_LEN, tuntap::options, send_msg_iservice(), strerror_win32(), and strncpynt().

Referenced by close_tun(), do_ifconfig_ipv4(), and do_ifconfig_ipv6().

do_dns_service()

static void do_dns_service ( bool  add, const short  family, const struct tuntap *  tt  )

static

Definition at line 240 of file tun.c.

References tuntap::actual_name, tuntap::adapter_index, dns_cfg_message_t::addr, dns_cfg_message_t::addr_len, D_LOW, tuntap_options::dns, tuntap_options::dns6, tuntap_options::dns6_len, tuntap_options::dns_len, ack_message_t::error_number, gc, gc_free(), gc_new(), dns_cfg_message_t::header, i, dns_cfg_message_t::iface, interface_t::index, inet_address_t::ipv4, inet_address_t::ipv6, M_INFO, M_WARN, msg, msg_add_dns_cfg, tuntap_options::msg_channel, msg_del_dns_cfg, interface_t::name, tuntap::options, send_msg_iservice(), and strerror_win32().

Referenced by close_tun(), do_ifconfig_ipv4(), and do_ifconfig_ipv6().

do_ifconfig()

void do_ifconfig	(	struct tuntap *	tt,
		const char *	ifname,
		int	tun_mtu,
		const struct env_set *	es,
		openvpn_net_ctx_t *	ctx
	)

do_ifconfig - configure the tunnel interface

Parameters

tt	the tuntap interface context
ifname	the human readable interface name
tun_mtu	the MTU value to set the interface to
es	the environment to be used when executing the commands
ctx	the networking API opaque context

Definition at line 1566 of file tun.c.

References D_LOW, tuntap::did_ifconfig_ipv6_setup, tuntap::did_ifconfig_setup, do_ifconfig_ipv4(), do_ifconfig_ipv6(), es, tuntap::local, tuntap::local_ipv6, management_set_state(), msg, net_ctx_free(), and OPENVPN_STATE_ASSIGN_IP.

Referenced by do_open_tun().

do_ifconfig_ipv4()

static void do_ifconfig_ipv4 ( struct tuntap *  tt, const char *  ifname, int  tun_mtu, const struct env_set *  es, openvpn_net_ctx_t *  ctx  )

static

do_ifconfig_ipv4 - perform platform specific ifconfig commands

Parameters

tt	the tuntap interface context
ifname	the human readable interface name
tun_mtu	the MTU value to set the interface to
es	the environment to be used when executing the commands
ctx	the networking API opaque context

Definition at line 1239 of file tun.c.

References tuntap::adapter_index, tuntap::adapter_netmask, add_route(), argv_free(), argv_msg(), argv_new(), argv_printf(), CLEAR, DEV_TYPE_TUN, do_address_service(), do_dns_domain_pwsh(), do_dns_domain_service(), do_dns_service(), do_set_mtu_service(), do_wins_service(), env_set_add(), env_set_create(), env_set_destroy(), es, route_ipv4::flags, route_ipv4::gateway, gc, gc_free(), gc_new(), tuntap_options::ip_win32_type, IPW32_SET_ADAPTIVE, IPW32_SET_DHCP_MASQ, IPW32_SET_MANUAL, IPW32_SET_NETSH, is_tun_p2p(), tuntap::local, M_FATAL, M_INFO, route_ipv4::metric, msg, tuntap_options::msg_channel, route_ipv4::netmask, netmask_to_netbits2(), netsh_ifconfig(), route_ipv4::network, NI_IP_NETMASK, NI_OPTIONS, openvpn_execve_check(), tuntap::options, print_in_addr_t(), print_topology(), tuntap::remote_netmask, RT_DEFINED, RT_METRIC_DEFINED, S_FATAL, tuntap::topology, tuntap::type, and windows_set_mtu().

Referenced by do_ifconfig().

do_ifconfig_ipv6()

static void do_ifconfig_ipv6 ( struct tuntap *  tt, const char *  ifname, int  tun_mtu, const struct env_set *  es, openvpn_net_ctx_t *  ctx  )

static

do_ifconfig_ipv6 - perform platform specific ifconfig6 commands

Parameters

tt	the tuntap interface context
ifname	the human readable interface name
tun_mtu	the MTU value to set the interface to
es	the environment to be used when executing the commands
ctx	the networking API opaque context

Definition at line 1048 of file tun.c.

References tuntap::adapter_index, add_route_connected_v6_net(), argv_free(), argv_msg(), argv_new(), argv_printf(), DEV_TYPE_TUN, tuntap::did_ifconfig_setup, tuntap_options::dns6, tuntap_options::dns6_len, do_address_service(), do_dns_domain_pwsh(), do_dns_domain_service(), do_dns_service(), do_set_mtu_service(), env_set_add(), env_set_create(), env_set_destroy(), es, gc, gc_free(), gc_new(), get_win_sys_path(), tuntap_options::ip_win32_type, IPW32_SET_MANUAL, tuntap::local_ipv6, M_FATAL, M_INFO, msg, tuntap_options::msg_channel, tuntap::netbits_ipv6, netsh_command(), NETSH_PATH_SUFFIX, netsh_set_dns6_servers(), openvpn_execve_check(), tuntap::options, print_in6_addr(), tuntap::remote_ipv6, S_FATAL, sleep, tuntap::type, and windows_set_mtu().

Referenced by do_ifconfig().

do_ifconfig_setenv()

void do_ifconfig_setenv	(	const struct tuntap *	tt,
		struct env_set *	es
	)

Definition at line 786 of file tun.c.

References tuntap::did_ifconfig_ipv6_setup, tuntap::did_ifconfig_setup, es, gc, gc_free(), gc_new(), is_tun_p2p(), tuntap::local, tuntap::local_ipv6, tuntap::netbits_ipv6, print_in6_addr(), print_in_addr_t(), tuntap::remote_ipv6, tuntap::remote_netmask, setenv_int(), and setenv_str().

Referenced by do_open_tun(), and init_tun().

do_set_mtu_service()

static bool do_set_mtu_service ( const struct tuntap *  tt, const short  family, const int  mtu  )

static

Definition at line 367 of file tun.c.

References tuntap::actual_name, tuntap::adapter_index, ack_message_t::error_number, gc, gc_free(), gc_new(), set_mtu_message_t::header, set_mtu_message_t::iface, interface_t::index, M_INFO, M_NONFATAL, msg, tuntap_options::msg_channel, msg_set_mtu, interface_t::name, tuntap::options, send_msg_iservice(), strerror_win32(), and strncpynt().

Referenced by do_ifconfig_ipv4(), and do_ifconfig_ipv6().

do_wins_service()

static void do_wins_service ( bool  add, const struct tuntap *  tt  )

static

Definition at line 310 of file tun.c.

References tuntap::actual_name, tuntap::adapter_index, wins_cfg_message_t::addr, wins_cfg_message_t::addr_len, D_LOW, ack_message_t::error_number, gc, gc_free(), gc_new(), wins_cfg_message_t::header, i, wins_cfg_message_t::iface, interface_t::index, inet_address_t::ipv4, M_INFO, M_WARN, msg, msg_add_wins_cfg, tuntap_options::msg_channel, msg_del_wins_cfg, interface_t::name, tuntap::options, send_msg_iservice(), strerror_win32(), tuntap_options::wins, and tuntap_options::wins_len.

Referenced by close_tun(), and do_ifconfig_ipv4().

exec_command()

static void exec_command ( const char *  prefix, const struct argv *  a, int  n, msglvl_t  msglevel  )

static

Definition at line 5089 of file tun.c.

References argv_msg_prefix(), i, M_INFO, management_sleep(), msg, netcmd_semaphore_lock(), netcmd_semaphore_release(), openvpn_execve_check(), and status.

Referenced by do_dns_domain_pwsh(), and netsh_command().

fork_dhcp_action()

static void fork_dhcp_action ( struct tuntap *  tt )

static

Definition at line 5559 of file tun.c.

References alloc_buf_gc(), BSTR, buf_printf(), fork_to_self(), gc, gc_free(), gc_new(), and buffer::len.

Referenced by tuntap_set_ip_addr().

fork_register_dns_action()

void fork_register_dns_action

(

struct tuntap *

tt

)

Definition at line 5614 of file tun.c.

References alloc_buf_gc(), BSTR, buf_printf(), fork_to_self(), gc, gc_free(), gc_new(), buffer::len, tuntap_options::msg_channel, tuntap::options, tuntap_options::register_dns, and register_dns_service().

Referenced by initialization_sequence_completed().

format_ip_addr_string()

static const char * format_ip_addr_string ( const IP_ADDR_STRING *  ip, struct gc_arena *  gc  )

static

Definition at line 4825 of file tun.c.

References alloc_buf_gc(), BSTR, buf_printf(), gc, and buffer::len.

Referenced by show_adapter().

get_adapter()

const IP_ADAPTER_INFO * get_adapter	(	const IP_ADAPTER_INFO *	ai,
		DWORD	index
	)

Definition at line 4426 of file tun.c.

References TUN_ADAPTER_INDEX_INVALID.

Referenced by get_adapter_info(), get_default_gateway(), get_tun_adapter(), and netsh_ifconfig().

get_adapter_by_guid()

static const struct tap_reg * get_adapter_by_guid ( const char *  guid, const struct tap_reg *  tap_reg  )

static

Definition at line 4127 of file tun.c.

References tap_reg::guid, and tap_reg::next.

Referenced by get_adapter_by_name(), and get_device_guid().

get_adapter_by_name()

static const struct tap_reg * get_adapter_by_name ( const char *  name, const struct tap_reg *  tap_reg, const struct panel_reg *  panel_reg  )

static

Definition at line 4159 of file tun.c.

References get_adapter_by_guid(), panel_reg::guid, panel_reg::name, and panel_reg::next.

Referenced by get_device_guid().

get_adapter_index()

static DWORD get_adapter_index ( const char *  guid )

static

Definition at line 4806 of file tun.c.

References get_adapter_index_method_1(), get_adapter_index_method_2(), M_INFO, msg, and TUN_ADAPTER_INDEX_INVALID.

Referenced by tun_open_device().

get_adapter_index_method_1()

static DWORD get_adapter_index_method_1 ( const char *  guid )

static

Definition at line 4766 of file tun.c.

References SIZE, and TUN_ADAPTER_INDEX_INVALID.

Referenced by get_adapter_index().

get_adapter_index_method_2()

static DWORD get_adapter_index_method_2 ( const char *  guid )

static

Definition at line 4784 of file tun.c.

References gc, gc_free(), gc_new(), get_adapter_info_list(), gc_arena::list, and TUN_ADAPTER_INDEX_INVALID.

Referenced by get_adapter_index().

get_adapter_info()

const IP_ADAPTER_INFO * get_adapter_info	(	DWORD	index,
		struct gc_arena *	gc
	)

Definition at line 4445 of file tun.c.

References gc, get_adapter(), and get_adapter_info_list().

Referenced by delete_temp_addresses(), dhcp_status(), and get_bypass_addresses().

get_adapter_info_list()

const IP_ADAPTER_INFO * get_adapter_info_list

(

struct gc_arena *

gc

)

Definition at line 4318 of file tun.c.

References gc, gc_malloc(), M_INFO, msg, status, and strerror_win32().

Referenced by get_adapter_index_method_2(), get_adapter_info(), get_default_gateway(), netsh_ifconfig(), show_adapters(), test_routes(), and windows_route_find_if_index().

get_adapter_ip_netmask()

static bool get_adapter_ip_netmask ( const IP_ADAPTER_INFO *  ai, const int  n, in_addr_t *  ip, in_addr_t *  netmask  )

static

Definition at line 4472 of file tun.c.

References getaddr(), GETADDR_HOST_ORDER, and i.

Referenced by is_adapter_up(), is_ip_in_adapter_subnet(), and test_adapter_ip_netmask().

get_adapter_n_ip_netmask()

static int get_adapter_n_ip_netmask ( const IP_ADAPTER_INFO *  ai )

static

Definition at line 4451 of file tun.c.

Referenced by is_adapter_up(), and is_ip_in_adapter_subnet().

get_device_guid()

static const char * get_device_guid ( const char *  name, uint8_t *  actual_name, int  actual_name_size, enum tun_driver_type *  windows_driver, const struct tap_reg *  tap_reg, const struct panel_reg *  panel_reg, struct gc_arena *  gc  )

static

Definition at line 4254 of file tun.c.

References alloc_buf_gc(), ASSERT, BSTR, buf_printf(), buf_set_write(), clear_buf(), gc, get_adapter_by_guid(), get_adapter_by_name(), tap_reg::guid, guid_to_name(), and tap_reg::windows_driver.

Referenced by netsh_get_id(), tap_allow_nonadmin_access(), and tun_open_device().

get_device_instance_id_interface()

static const struct device_instance_id_interface * get_device_instance_id_interface ( struct gc_arena *  gc )

static

Definition at line 3641 of file tun.c.

References ALLOC_OBJ_CLEAR_GC, D_TAP_WIN_DEBUG, device_instance_id_interface::device_interface, gc, gc_malloc(), GUID_DEVCLASS_NET, GUID_DEVINTERFACE_NET, i, M_FATAL, msg, device_instance_id_interface::net_cfg_instance_id, device_instance_id_interface::next, res, status, strerror_win32(), and string_alloc().

Referenced by tun_open_device().

get_interface_info()

static const IP_ADAPTER_INDEX_MAP * get_interface_info ( DWORD  index, struct gc_arena *  gc  )

static

Definition at line 4402 of file tun.c.

References gc, get_interface_info_list(), and i.

Referenced by dhcp_release_by_adapter_index(), and dhcp_renew_by_adapter_index().

get_interface_info_list()

static const IP_INTERFACE_INFO * get_interface_info_list ( struct gc_arena *  gc )

static

Definition at line 4374 of file tun.c.

References gc, gc_malloc(), M_INFO, msg, status, and strerror_win32().

Referenced by get_interface_info().

get_panel_reg()

static const struct panel_reg * get_panel_reg ( struct gc_arena *  gc )

static

Definition at line 3878 of file tun.c.

References ALLOC_OBJ_CLEAR_GC, D_REGISTRY, dmsg, gc, gc_malloc(), panel_reg::guid, i, M_FATAL, msg, panel_reg::name, panel_reg::next, status, and string_alloc().

Referenced by netsh_get_id(), show_tap_win_adapters(), tap_allow_nonadmin_access(), and tun_open_device().

get_per_adapter_info()

const IP_PER_ADAPTER_INFO * get_per_adapter_info	(	const DWORD	index,
		struct gc_arena *	gc
	)

Definition at line 4343 of file tun.c.

References gc, gc_malloc(), M_INFO, msg, status, strerror_win32(), and TUN_ADAPTER_INDEX_INVALID.

Referenced by get_bypass_addresses(), netsh_ifconfig(), and show_adapter().

get_tap_reg()

static const struct tap_reg * get_tap_reg ( struct gc_arena *  gc )

static

Definition at line 3767 of file tun.c.

References ALLOC_OBJ_CLEAR_GC, D_REGISTRY, D_TAP_WIN_DEBUG, dmsg, DRIVER_DCO, gc, tap_reg::guid, i, M_FATAL, msg, tap_reg::next, print_tun_backend_driver(), status, string_alloc(), tap_reg::windows_driver, WINDOWS_DRIVER_TAP_WINDOWS6, and WINDOWS_DRIVER_UNSPECIFIED.

Referenced by netsh_get_id(), show_tap_win_adapters(), tap_allow_nonadmin_access(), and tun_open_device().

get_tun_adapter()

const IP_ADAPTER_INFO * get_tun_adapter	(	const struct tuntap *	tt,
		const IP_ADAPTER_INFO *	list
	)

Definition at line 4530 of file tun.c.

References tuntap::adapter_index, and get_adapter().

Referenced by is_adapter_up(), and windows_route_find_if_index().

get_unspecified_device_guid()

static const char * get_unspecified_device_guid ( const int  device_number, uint8_t *  actual_name, int  actual_name_size, const struct tap_reg *  tap_reg_src, const struct panel_reg *  panel_reg_src, enum tun_driver_type *  windows_driver, struct gc_arena *  gc  )

static

Definition at line 4191 of file tun.c.

References alloc_buf_gc(), ASSERT, BSTR, buf_printf(), buf_set_write(), clear_buf(), gc, tap_reg::guid, guid_to_name(), i, buffer::len, tap_reg::next, and tap_reg::windows_driver.

Referenced by netsh_get_id(), tap_allow_nonadmin_access(), and tun_open_device().

guess_tuntap_dev()

const char * guess_tuntap_dev	(	const char *	dev,
		const char *	dev_type,
		const char *	dev_node,
		struct gc_arena *	gc
	)

Definition at line 560 of file tun.c.

References dev_type_enum(), DEV_TYPE_TAP, DEV_TYPE_TUN, gc, and netsh_get_id().

Referenced by do_open_tun().

guid_to_name()

static const char * guid_to_name ( const char *  guid, const struct panel_reg *  panel_reg  )

static

Definition at line 4143 of file tun.c.

References panel_reg::guid, panel_reg::name, and panel_reg::next.

Referenced by get_device_guid(), and get_unspecified_device_guid().

ifconfig_options_string()

const char * ifconfig_options_string	(	const struct tuntap *	tt,
		bool	remote,
		bool	disable,
		struct gc_arena *	gc
	)

Definition at line 694 of file tun.c.

References alloc_buf_gc(), BSTR, buf_printf(), DEV_TYPE_TUN, gc, is_tun_p2p(), buffer::len, and print_in_addr_t().

Referenced by options_string().

ifconfig_sanity_check()

static void ifconfig_sanity_check ( bool  tun_p2p, in_addr_t  addr  )

static

Definition at line 586 of file tun.c.

References gc, gc_free(), gc_new(), ifconfig_warn_how_to_silence, M_WARN, msg, and print_in_addr_t().

Referenced by init_tun().

init_ip_addr_string2()

static void init_ip_addr_string2 ( IP_ADDR_STRING *  dest, const IP_ADDR_STRING *  src1, const IP_ADDR_STRING *  src2  )

static

Definition at line 5324 of file tun.c.

References CLEAR.

Referenced by netsh_ifconfig().

init_tun()

struct tuntap * init_tun	(	const char *	dev,
		const char *	dev_type,
		int	topology,
		const char *	ifconfig_local_parm,
		const char *	ifconfig_remote_netmask_parm,
		const char *	ifconfig_ipv6_local_parm,
		int	ifconfig_ipv6_netbits_parm,
		const char *	ifconfig_ipv6_remote_parm,
		struct addrinfo *	local_public,
		struct addrinfo *	remote_public,
		const bool	strict_warn,
		struct env_set *	es,
		openvpn_net_ctx_t *	ctx,
		struct tuntap *	tt
	)

Definition at line 830 of file tun.c.

References tuntap::adapter_netmask, ALLOC_OBJ, check_addr_clash(), clear_tuntap(), dev_type_enum(), tuntap::did_ifconfig_ipv6_setup, tuntap::did_ifconfig_setup, do_ifconfig_setenv(), es, getaddr(), GETADDR_FATAL, GETADDR_FATAL_ON_SIGNAL, GETADDR_HOST_ORDER, GETADDR_RESOLVE, ifconfig_sanity_check(), is_tun_p2p(), tuntap::local, tuntap::local_ipv6, M_FATAL, msg, tuntap::netbits_ipv6, tuntap::remote_ipv6, tuntap::remote_netmask, tuntap::topology, tuntap::type, and verify_255_255_255_252().

Referenced by do_init_tun(), and options_string().

init_tun_post()

void init_tun_post	(	struct tuntap *	tt,
		const struct frame *	frame,
		const struct tuntap_options *	options
	)

Definition at line 954 of file tun.c.

References tuntap::adapter_index, tuntap::backend_driver, tuntap::dco, DRIVER_DCO, tuntap::options, overlapped_io::overlapped, overlapped_io_init(), rw_handle::read, tuntap::reads, tuntap::rw_handle, TUN_ADAPTER_INDEX_INVALID, rw_handle::write, and tuntap::writes.

Referenced by do_init_tun().

ip_addr_member_of()

static bool ip_addr_member_of ( const in_addr_t  addr, const IP_ADDR_STRING *  ias  )

static

Definition at line 5206 of file tun.c.

References i, ip_addr_string_to_array(), and SIZE.

Referenced by netsh_ifconfig_options().

ip_addr_one_to_one()

static bool ip_addr_one_to_one ( const in_addr_t *  a1, const int  a1len, const IP_ADDR_STRING *  ias  )

static

Definition at line 5182 of file tun.c.

References i, ip_addr_string_to_array(), and SIZE.

Referenced by netsh_ifconfig_options().

ip_addr_string_to_array()

void ip_addr_string_to_array	(	in_addr_t *	dest,
		int *	dest_len,
		const IP_ADDR_STRING *	src
	)

Definition at line 5138 of file tun.c.

References gc, gc_free(), gc_new(), getaddr(), GETADDR_HOST_ORDER, i, M_INFO, msg, and print_in_addr_t().

Referenced by ip_addr_member_of(), and ip_addr_one_to_one().

ipconfig_register_dns()

void ipconfig_register_dns

(

const struct env_set *

es

)

Definition at line 5116 of file tun.c.

References argv_free(), argv_msg(), argv_new(), argv_printf(), D_TUNTAP_INFO, es, get_win_sys_path(), msg, netcmd_semaphore_lock(), netcmd_semaphore_release(), openvpn_execve_check(), and WIN_IPCONFIG_PATH_SUFFIX.

Referenced by add_option().

ipset2ascii()

const char * ipset2ascii

(

int

index

)

Definition at line 6492 of file tun.c.

References ASSERT, IPW32_SET_N, ipset_names::short_form, and SIZE.

Referenced by ipset2ascii_all().

ipset2ascii_all()

const char * ipset2ascii_all

(

struct gc_arena *

gc

)

Definition at line 6506 of file tun.c.

References alloc_buf_gc(), ASSERT, BSTR, buf_printf(), gc, i, ipset2ascii(), IPW32_SET_N, and SIZE.

Referenced by add_option().

is_adapter_up()

bool is_adapter_up	(	const struct tuntap *	tt,
		const IP_ADAPTER_INFO *	list
	)

Definition at line 4543 of file tun.c.

References tuntap::adapter_netmask, get_adapter_ip_netmask(), get_adapter_n_ip_netmask(), get_tun_adapter(), i, and tuntap::local.

Referenced by test_routes().

is_dev_type()

bool is_dev_type	(	const char *	dev,
		const char *	dev_type,
		const char *	match_type
	)

Definition at line 503 of file tun.c.

References ASSERT.

Referenced by dev_type_enum(), and do_init_tun().

is_ip_in_adapter_subnet()

bool is_ip_in_adapter_subnet	(	const IP_ADAPTER_INFO *	ai,
		const in_addr_t	ip,
		in_addr_t *	highest_netmask
	)

Definition at line 4587 of file tun.c.

References get_adapter_ip_netmask(), get_adapter_n_ip_netmask(), and i.

Referenced by adapter_index_of_ip(), and windows_route_find_if_index().

is_tun_p2p()

bool is_tun_p2p

(

const struct tuntap *

tt

)

Definition at line 762 of file tun.c.

References DEV_TYPE_TAP, DEV_TYPE_TUN, buffer::len, M_FATAL, msg, and TOP_SUBNET.

Referenced by do_ifconfig_ipv4(), do_ifconfig_setenv(), ifconfig_options_string(), init_tun(), and undo_ifconfig_ipv4().

netsh_command()

static void netsh_command ( const struct argv *  a, int  n, msglvl_t  msglevel  )

static

Definition at line 5110 of file tun.c.

References exec_command().

Referenced by do_ifconfig_ipv6(), netsh_delete_address_dns(), netsh_enable_dhcp(), netsh_ifconfig(), netsh_ifconfig_options(), and netsh_set_dns6_servers().

netsh_delete_address_dns()

static void netsh_delete_address_dns ( const struct tuntap *  tt, bool  ipv6, struct gc_arena *  gc  )

static

Definition at line 6299 of file tun.c.

References tuntap::adapter_index, argv_free(), argv_new(), argv_printf(), delete_route_connected_v6_net(), DEV_TYPE_TUN, tuntap_options::dns6_len, tuntap_options::dns_len, gc, get_win_sys_path(), buffer::len, tuntap::local, tuntap::local_ipv6, M_WARN, netsh_command(), NETSH_PATH_SUFFIX, tuntap::options, print_in6_addr(), print_in_addr_t(), tuntap::type, and tuntap_options::wins_len.

Referenced by close_tun().

netsh_enable_dhcp()

static void netsh_enable_dhcp ( DWORD  adapter_index )

static

Definition at line 5398 of file tun.c.

References argv_free(), argv_new(), argv_printf(), get_win_sys_path(), M_FATAL, netsh_command(), and NETSH_PATH_SUFFIX.

Referenced by tuntap_set_ip_props().

netsh_get_id()

static const char * netsh_get_id ( const char *  dev_node, struct gc_arena *  gc  )

static

Definition at line 5488 of file tun.c.

References alloc_buf_gc(), at_least_one_tap_win(), BCAP, BPTR, BSTR, gc, get_device_guid(), get_panel_reg(), get_tap_reg(), get_unspecified_device_guid(), and buffer::len.

Referenced by guess_tuntap_dev().

netsh_ifconfig()

static void netsh_ifconfig ( const struct tuntap_options *  to, DWORD  adapter_index, const in_addr_t  ip, const in_addr_t  netmask, const unsigned int  flags  )

static

Definition at line 5342 of file tun.c.

References argv_free(), argv_new(), argv_printf(), BOOL_CAST, CLEAR, tuntap_options::dns, tuntap_options::dns_len, gc, gc_free(), gc_new(), get_adapter(), get_adapter_info_list(), get_per_adapter_info(), get_win_sys_path(), init_ip_addr_string2(), M_FATAL, M_INFO, msg, netsh_command(), netsh_ifconfig_options(), NETSH_PATH_SUFFIX, NI_IP_NETMASK, NI_OPTIONS, NI_TEST_FIRST, print_in_addr_t(), test_adapter_ip_netmask(), tuntap_options::wins, and tuntap_options::wins_len.

Referenced by do_ifconfig_ipv4(), tun_standby(), and tuntap_set_ip_props().

netsh_ifconfig_options()

static void netsh_ifconfig_options ( const char *  type, const in_addr_t *  addr_list, const int  addr_len, const IP_ADDR_STRING *  current, DWORD  adapter_index, const bool  test_first  )

static

Definition at line 5258 of file tun.c.

References argv_free(), argv_new(), argv_printf(), argv_printf_cat(), gc, gc_free(), gc_new(), get_win_sys_path(), i, ip_addr_member_of(), ip_addr_one_to_one(), M_FATAL, M_INFO, msg, netsh_command(), NETSH_PATH_SUFFIX, and print_in_addr_t().

Referenced by netsh_ifconfig().

netsh_set_dns6_servers()

static void netsh_set_dns6_servers ( const struct in6_addr *  addr_list, const int  addr_len, DWORD  adapter_index  )

static

Set the ipv6 dns servers on the specified interface.

The list of dns servers currently set on the interface are cleared first.

Definition at line 5229 of file tun.c.

References argv_free(), argv_new(), argv_printf(), argv_printf_cat(), gc, gc_free(), gc_new(), get_win_sys_path(), i, M_FATAL, M_NONFATAL, netsh_command(), NETSH_PATH_SUFFIX, and print_in6_addr().

Referenced by do_ifconfig_ipv6().

open_tun()

void open_tun	(	const char *	dev,
		const char *	dev_type,
		const char *	dev_node,
		struct tuntap *	tt,
		openvpn_net_ctx_t *	ctx
	)

Definition at line 6226 of file tun.c.

References tuntap::backend_driver, DEV_TYPE_TAP, DEV_TYPE_TUN, tuntap_options::dhcp_options, DHCP_OPTIONS_DHCP_REQUIRED, gc, gc_free(), gc_new(), M_FATAL, M_INFO, M_NOPREFIX, M_WARN, msg, tuntap::options, print_tun_backend_driver(), tun_open_device(), tuntap_is_dco_win(), tuntap_post_open(), tuntap::type, and WINDOWS_DRIVER_TAP_WINDOWS6.

Referenced by open_tun_backend().

print_tun_backend_driver()

const char * print_tun_backend_driver

(

enum tun_driver_type

driver

)

Return a string representation of the tun backed driver type.

Definition at line 59 of file tun.c.

References DRIVER_AFUNIX, DRIVER_DCO, DRIVER_GENERIC_TUNTAP, DRIVER_NULL, DRIVER_UTUN, and WINDOWS_DRIVER_TAP_WINDOWS6.

Referenced by close_tun_handle(), do_close_tun_simple(), do_create_adapter_service(), get_tap_reg(), open_tun(), open_tun_backend(), options_postprocess_verify_ce(), show_tap_win_adapters(), tun_open_device(), and tun_try_open_device().

register_dns_service()

static void register_dns_service ( const struct tuntap *  tt )

static

Definition at line 5585 of file tun.c.

References ack_message_t::error_number, gc, gc_free(), gc_new(), buffer::len, M_INFO, M_WARN, msg, msg_register_dns, send_msg_iservice(), and strerror_win32().

Referenced by fork_register_dns_action().

service_enable_dhcp()

static bool service_enable_dhcp ( const struct tuntap *  tt )

static

Definition at line 5413 of file tun.c.

References tuntap::adapter_index, ack_message_t::error_number, gc, gc_free(), gc_new(), M_INFO, M_NONFATAL, msg, tuntap_options::msg_channel, msg_enable_dhcp, tuntap::options, send_msg_iservice(), and strerror_win32().

Referenced by tuntap_set_ip_props().

show_adapter()

static void show_adapter ( msglvl_t  msglevel, const IP_ADAPTER_INFO *  a, struct gc_arena *  gc  )

static

Definition at line 4846 of file tun.c.

References format_hex_ex(), format_ip_addr_string(), gc, get_per_adapter_info(), buffer::len, msg, and time_string().

Referenced by show_adapters().

show_adapters()

void show_adapters

(

msglvl_t

msglevel

)

Definition at line 4879 of file tun.c.

References gc, gc_free(), gc_new(), get_adapter_info_list(), msg, and show_adapter().

Referenced by add_option(), check_add_routes(), do_route(), initialization_sequence_completed(), and management_show_net_callback().

show_tap_win_adapters()

void show_tap_win_adapters	(	msglvl_t	msglevel,
		msglvl_t	warnlevel
	)

Definition at line 4042 of file tun.c.

References gc, gc_free(), gc_new(), get_panel_reg(), get_tap_reg(), tap_reg::guid, panel_reg::guid, msg, panel_reg::name, tap_reg::next, panel_reg::next, print_tun_backend_driver(), and tap_reg::windows_driver.

Referenced by add_option().

show_valid_win32_tun_subnets()

void show_valid_win32_tun_subnets

(

void

)

Definition at line 4009 of file tun.c.

References i.

Referenced by add_option().

tap_allow_nonadmin_access()

void tap_allow_nonadmin_access

(

const char *

dev_node

)

Definition at line 4928 of file tun.c.

References at_least_one_tap_win(), gc, gc_free(), gc_new(), get_device_guid(), get_panel_reg(), get_tap_reg(), get_unspecified_device_guid(), M_ERR, M_FATAL, M_WARN, msg, and tap_allow_nonadmin_access_handle().

Referenced by add_option().

tap_allow_nonadmin_access_handle()

static void tap_allow_nonadmin_access_handle ( const char *  device_path, HANDLE  hand  )

static

Definition at line 4906 of file tun.c.

References init_security_attributes_allow_all(), M_ERR, M_ERRNO, M_INFO, M_NOPREFIX, msg, security_attributes::sa, and status.

Referenced by tap_allow_nonadmin_access().

tap_win_getinfo()

const char * tap_win_getinfo	(	const struct tuntap *	tt,
		struct gc_arena *	gc
	)

Definition at line 6267 of file tun.c.

References alloc_buf_gc(), tuntap::backend_driver, BCAP, BSTR, gc, buffer::len, and WINDOWS_DRIVER_TAP_WINDOWS6.

Referenced by print_status(), and x_check_status().

test_adapter_ip_netmask()

static bool test_adapter_ip_netmask ( const IP_ADAPTER_INFO *  ai, const in_addr_t  ip, const in_addr_t  netmask  )

static

Definition at line 4514 of file tun.c.

References get_adapter_ip_netmask(), and status.

Referenced by netsh_ifconfig().

tun_name_is_fixed()

bool tun_name_is_fixed

(

const char *

dev

)

Definition at line 1790 of file tun.c.

References has_digit().

tun_open_device()

void tun_open_device	(	struct tuntap *	tt,
		const char *	dev_node,
		const char **	device_guid,
		struct gc_arena *	gc
	)

Definition at line 6044 of file tun.c.

References tuntap::actual_name, tuntap::adapter_index, tuntap::backend_driver, do_create_adapter_service(), gc, get_adapter_index(), get_device_guid(), get_device_instance_id_interface(), get_panel_reg(), get_tap_reg(), get_unspecified_device_guid(), M_FATAL, msg, tuntap_options::msg_channel, device_instance_id_interface::next, tuntap::options, print_tun_backend_driver(), string_alloc(), tun_try_open_device(), and WINDOWS_DRIVER_UNSPECIFIED.

Referenced by create_socket_dco_win(), open_tun(), and ovpn_dco_init_mp().

tun_read_queue()

int tun_read_queue	(	struct tuntap *	tt,
		int	maxsize
	)

Definition at line 3504 of file tun.c.

References ASSERT, BLEN, BPTR, overlapped_io::buf, overlapped_io::buf_init, D_WIN32_IO, dmsg, gc, gc_free(), gc_new(), tuntap::hand, overlapped_io::iostate, IOSTATE_IMMEDIATE_RETURN, IOSTATE_INITIAL, IOSTATE_QUEUED, overlapped_io::overlapped, tuntap::reads, overlapped_io::size, overlapped_io::status, status, and strerror_win32().

Referenced by tun_set().

tun_show_debug()

void tun_show_debug

(

struct tuntap *

tt

)

Definition at line 6283 of file tun.c.

References alloc_buf(), BCAP, BSTR, D_TAP_WIN_DEBUG, free_buf(), buffer::len, msg, and WINDOWS_DRIVER_TAP_WINDOWS6.

Referenced by pre_select().

tun_standby()

bool tun_standby

(

struct tuntap *

tt

)

Definition at line 5538 of file tun.c.

References IPW32_SET_ADAPTIVE, IPW32_SET_ADAPTIVE_TRY_NETSH, buffer::len, M_INFO, msg, netsh_ifconfig(), NI_IP_NETMASK, NI_OPTIONS, and NI_TEST_FIRST.

Referenced by check_add_routes().

tun_standby_init()

void tun_standby_init

(

struct tuntap *

tt

)

Definition at line 5532 of file tun.c.

References buffer::len.

Referenced by do_up(), and do_update().

tun_stat()

const char * tun_stat	(	const struct tuntap *	tt,
		unsigned int	rwflags,
		struct gc_arena *	gc
	)

Definition at line 731 of file tun.c.

References alloc_buf_gc(), BSTR, buf_printf(), EVENT_READ, EVENT_WRITE, gc, buffer::len, and overlapped_io_state_ascii().

tun_try_open_device()

static bool tun_try_open_device ( struct tuntap *  tt, const char *  device_guid, const struct device_instance_id_interface *  device_instance_id_interface  )

static

Definition at line 5987 of file tun.c.

References tuntap::backend_driver, D_TAP_WIN_DEBUG, D_TUNTAP_INFO, DCO_WIN_REFERENCE_STRING, device_instance_id_interface::device_interface, DRIVER_DCO, tuntap::hand, buffer::len, M_ERRNO, msg, device_instance_id_interface::net_cfg_instance_id, device_instance_id_interface::next, and print_tun_backend_driver().

Referenced by tun_open_device().

tun_write_queue()

int tun_write_queue	(	struct tuntap *	tt,
		struct buffer *	buf
	)

Definition at line 3560 of file tun.c.

References ASSERT, BLEN, BPTR, overlapped_io::buf, buf_copy(), overlapped_io::buf_init, D_WIN32_IO, dmsg, gc, gc_free(), gc_new(), tuntap::hand, overlapped_io::iostate, IOSTATE_IMMEDIATE_RETURN, IOSTATE_INITIAL, IOSTATE_QUEUED, buffer::len, overlapped_io::overlapped, overlapped_io::size, overlapped_io::status, status, strerror_win32(), and tuntap::writes.

Referenced by tun_write_win32().

tun_write_win32()

int tun_write_win32	(	struct tuntap *	tt,
		struct buffer *	buf
	)

Definition at line 3615 of file tun.c.

References BLEN, tuntap::hand, sockethandle_t::is_handle, overlapped_io_active(), sockethandle_finalize(), status, tun_write_queue(), and tuntap::writes.

Referenced by process_outgoing_tun().

tuntap_dhcp_mask()

static void tuntap_dhcp_mask ( const struct tuntap *  tt, const char *  device_guid  )

static

Definition at line 5911 of file tun.c.

References tuntap::adapter_netmask, alloc_buf(), ASSERT, BLEN, BPTR, build_dhcp_options_string(), D_DHCP_OPT, DEV_TYPE_TAP, DEV_TYPE_TUN, tuntap_options::dhcp_lease_time, dhcp_masq_addr(), tuntap_options::dhcp_masq_custom_offset, tuntap_options::dhcp_masq_offset, tuntap_options::dhcp_options, format_hex(), free_buf(), gc, gc_free(), gc_new(), tuntap::hand, IA_NET_ORDER, buffer::len, tuntap::local, M_FATAL, M_INFO, M_WARN, msg, tuntap::options, print_in_addr_t(), tuntap::remote_netmask, TOP_SUBNET, tuntap::topology, and tuntap::type.

Referenced by tuntap_post_open().

tuntap_get_mtu()

static void tuntap_get_mtu ( struct tuntap *  tt )

static

Definition at line 5705 of file tun.c.

References D_MTU_INFO, tuntap::hand, and msg.

Referenced by tuntap_post_open().

tuntap_get_version_info()

static void tuntap_get_version_info ( const struct tuntap *  tt )

static

Definition at line 5664 of file tun.c.

References CLEAR, D_TUNTAP_INFO, DEV_TYPE_TUN, tuntap::hand, M_FATAL, M_INFO, msg, and tuntap::type.

Referenced by tuntap_post_open().

tuntap_post_open()

static void tuntap_post_open ( struct tuntap *  tt, const char *  device_guid  )

static

Definition at line 6182 of file tun.c.

References tuntap::backend_driver, DEV_TYPE_TUN, tuntap::did_ifconfig_setup, tuntap_dhcp_mask(), tuntap_get_mtu(), tuntap_get_version_info(), tuntap_set_connected(), tuntap_set_ip_addr(), tuntap_set_ip_props(), tuntap_set_ptp(), tuntap::type, and WINDOWS_DRIVER_TAP_WINDOWS6.

Referenced by open_tun().

tuntap_set_connected()

static void tuntap_set_connected ( const struct tuntap *  tt )

static

Definition at line 5834 of file tun.c.

References tuntap::hand, M_INFO, M_WARN, management_sleep(), msg, tuntap::options, status, and tuntap_options::tap_sleep.

Referenced by tuntap_post_open().

tuntap_set_ip_addr()

static void tuntap_set_ip_addr ( struct tuntap *  tt, const char *  device_guid, bool  dhcp_masq_post  )

static

Definition at line 5717 of file tun.c.

References tuntap::adapter_index, tuntap::adapter_netmask, tuntap::backend_driver, D_TUNTAP_INFO, delete_temp_addresses(), tuntap_options::dhcp_pre_release, dhcp_release(), dhcp_renew(), tuntap_options::dhcp_renew, dhcp_status(), DHCP_STATUS_DISABLED, tuntap::did_ifconfig_setup, ack_message_t::error_number, fork_dhcp_action(), gc, gc_free(), gc_new(), flush_neighbors_message_t::header, tuntap_options::ip_win32_type, tuntap::ipapi_context, tuntap::ipapi_context_defined, tuntap::ipapi_instance, IPW32_SET_IPAPI, tuntap::local, M_FATAL, M_INFO, M_WARN, msg, tuntap_options::msg_channel, msg_flush_neighbors, tuntap::options, print_in_addr_t(), send_msg_iservice(), status, strerror_win32(), TUN_ADAPTER_INDEX_INVALID, and WINDOWS_DRIVER_TAP_WINDOWS6.

Referenced by tuntap_post_open().

tuntap_set_ip_props()

static void tuntap_set_ip_props ( const struct tuntap *  tt, bool *  dhcp_masq, bool *  dhcp_masq_post  )

static

Definition at line 6142 of file tun.c.

References tuntap::adapter_index, tuntap::adapter_netmask, dhcp_status(), DHCP_STATUS_DISABLED, DHCP_STATUS_ENABLED, tuntap_options::ip_win32_type, IPW32_SET_ADAPTIVE, IPW32_SET_DHCP_MASQ, tuntap::local, tuntap_options::msg_channel, netsh_enable_dhcp(), netsh_ifconfig(), NI_IP_NETMASK, NI_OPTIONS, NI_TEST_FIRST, tuntap::options, and service_enable_dhcp().

Referenced by tuntap_post_open().

tuntap_set_ptp()

static void tuntap_set_ptp ( const struct tuntap *  tt )

static

Definition at line 5854 of file tun.c.

References tuntap::did_ifconfig_ipv6_setup, tuntap::did_ifconfig_setup, gc, gc_free(), gc_new(), tuntap::hand, IA_NET_ORDER, tuntap::local, M_FATAL, M_INFO, msg, print_in_addr_t(), tuntap::remote_netmask, status, TOP_SUBNET, and tuntap::topology.

Referenced by tuntap_post_open().

undo_ifconfig()

void undo_ifconfig	(	struct tuntap *	tt,
		openvpn_net_ctx_t *	ctx
	)

undo_ifconfig - undo configuration of the tunnel interface

Parameters

tt	the tuntap interface context
ctx	the networking API opaque context

Definition at line 1655 of file tun.c.

References tuntap::backend_driver, tuntap::did_ifconfig_ipv6_setup, tuntap::did_ifconfig_setup, DRIVER_AFUNIX, DRIVER_NULL, net_ctx_reset(), undo_ifconfig_ipv4(), and undo_ifconfig_ipv6().

Referenced by do_close_tun_simple().

undo_ifconfig_ipv4()

static void undo_ifconfig_ipv4 ( struct tuntap *  tt, openvpn_net_ctx_t *  ctx  )

static

Definition at line 1595 of file tun.c.

References tuntap::actual_name, argv_free(), argv_msg(), argv_new(), argv_printf(), gc, gc_free(), gc_new(), is_tun_p2p(), tuntap::local, M_INFO, M_WARN, msg, netmask_to_netbits2(), openvpn_execve_check(), print_in_addr_t(), and tuntap::remote_netmask.

Referenced by undo_ifconfig().

undo_ifconfig_ipv6()

static void undo_ifconfig_ipv6 ( struct tuntap *  tt, openvpn_net_ctx_t *  ctx  )

static

Definition at line 1630 of file tun.c.

References tuntap::actual_name, argv_free(), argv_msg(), argv_new(), argv_printf(), gc, gc_free(), gc_new(), tuntap::local_ipv6, M_INFO, M_WARN, msg, tuntap::netbits_ipv6, openvpn_execve_check(), and print_in6_addr().

Referenced by undo_ifconfig().

verify_255_255_255_252()

void verify_255_255_255_252	(	in_addr_t	local,
		in_addr_t	remote
	)

Definition at line 3973 of file tun.c.

References gc, gc_free(), gc_new(), M_FATAL, msg, and print_in_addr_t().

Referenced by init_tun().

warn_on_use_of_common_subnets()

void warn_on_use_of_common_subnets

(

openvpn_net_ctx_t *

ctx

)

Definition at line 670 of file tun.c.

References route_gateway_address::addr, route_gateway_info::flags, route_gateway_info::gateway, gc, gc_free(), gc_new(), get_default_gateway(), M_WARN, msg, route_gateway_address::netmask, RGI_ADDR_DEFINED, and RGI_NETMASK_DEFINED.

Referenced by do_option_warnings().

windows_set_mtu()

static void windows_set_mtu ( const int  iface_index, const short  family, const int  mtu  )

static

Definition at line 5445 of file tun.c.

References gc, gc_new(), M_INFO, M_WARN, msg, and strerror_win32().

Referenced by do_ifconfig_ipv4(), and do_ifconfig_ipv6().

Variable Documentation

GUID_DEVCLASS_NET

const GUID GUID_DEVCLASS_NET

static

Initial value:

= {
    0x4d36e972L, 0xe325, 0x11ce, { 0xbf, 0xc1, 0x08, 0x00, 0x2b, 0xe1, 0x03, 0x18 }
}

Definition at line 88 of file tun.c.

Referenced by get_device_instance_id_interface().

GUID_DEVINTERFACE_NET

const GUID GUID_DEVINTERFACE_NET

static

Initial value:

= {
    0xcac88484, 0x7515, 0x4c03, { 0x82, 0xe6, 0x71, 0xa8, 0x7a, 0xba, 0xc3, 0x61 }
}

Definition at line 91 of file tun.c.

Referenced by get_device_instance_id_interface().

ifconfig_warn_how_to_silence

const char ifconfig_warn_how_to_silence[] = "(silence this warning with --ifconfig-nowarn)"

static

Definition at line 576 of file tun.c.

Referenced by check_addr_clash(), and ifconfig_sanity_check().

ipset_names

const struct ipset_names ipset_names[]

static

Initial value:

= {
    { "manual" }, { "netsh" }, { "ipapi" }, { "dynamic" }, { "adaptive" }
}

Definition at line 6472 of file tun.c.