route.c File Reference

#include <stddef.h>
#include <stdbool.h>
#include "syshead.h"
#include "common.h"
#include "error.h"
#include "route.h"
#include "run_command.h"
#include "socket.h"
#include "manage.h"
#include "win32.h"
#include "options.h"
#include "networking.h"
#include "integer.h"
#include "memdbg.h"
#include "openvpn-msg.h"

Include dependency graph for route.c:

Go to the source code of this file.

Macros
#define	METRIC_NOT_USED   ((DWORD)-1)
#define	RTA_ERROR   0 /* route addition failed */
#define	RTA_SUCCESS   1 /* route addition succeeded */
#define	RTA_EEXIST   2 /* route not added as it already exists */
#define	LR_NOMATCH   0 /* route is not local */
#define	LR_MATCH   1 /* route is local */
#define	LR_ERROR   2 /* caller should abort adding route */

Functions
static int	add_route_service (const struct route_ipv4 *, const struct tuntap *)
static bool	del_route_service (const struct route_ipv4 *, const struct tuntap *)
static int	add_route_ipv6_service (const struct route_ipv6 *, const struct tuntap *)
static bool	del_route_ipv6_service (const struct route_ipv6 *, const struct tuntap *)
static int	route_ipv6_ipapi (bool add, const struct route_ipv6 *, const struct tuntap *)
static int	add_route_ipapi (const struct route_ipv4 *r, const struct tuntap *tt, DWORD adapter_index)
static bool	del_route_ipapi (const struct route_ipv4 *r, const struct tuntap *tt)
static void	delete_route (struct route_ipv4 *r, const struct tuntap *tt, unsigned int flags, const struct route_gateway_info *rgi, const struct env_set *es, openvpn_net_ctx_t *ctx)
static void	get_bypass_addresses (struct route_bypass *rb, const unsigned int flags)
static bool	add_bypass_address (struct route_bypass *rb, const in_addr_t a)
struct route_option_list *	new_route_option_list (struct gc_arena *a)
struct route_ipv6_option_list *	new_route_ipv6_option_list (struct gc_arena *a)
struct route_option_list *	clone_route_option_list (const struct route_option_list *src, struct gc_arena *a)
struct route_ipv6_option_list *	clone_route_ipv6_option_list (const struct route_ipv6_option_list *src, struct gc_arena *a)
void	copy_route_option_list (struct route_option_list *dest, const struct route_option_list *src, struct gc_arena *a)
void	copy_route_ipv6_option_list (struct route_ipv6_option_list *dest, const struct route_ipv6_option_list *src, struct gc_arena *a)
static const char *	route_string (const struct route_ipv4 *r, struct gc_arena *gc)
static bool	is_route_parm_defined (const char *parm)
static void	setenv_route_addr (struct env_set *es, const char *key, const in_addr_t addr, int i)
static bool	get_special_addr (const struct route_list *rl, const char *string, in_addr_t *out, bool *status)
bool	is_special_addr (const char *addr_str)
static bool	init_route (struct route_ipv4 *r, struct addrinfo **network_list, const struct route_option *ro, const struct route_list *rl)
static bool	init_route_ipv6 (struct route_ipv6 *r6, const struct route_ipv6_option *r6o, const struct route_ipv6_list *rl6)
void	add_route_to_option_list (struct route_option_list *l, const char *network, const char *netmask, const char *gateway, const char *metric, int table_id)
void	add_route_ipv6_to_option_list (struct route_ipv6_option_list *l, const char *prefix, const char *gateway, const char *metric, int table_id)
static void	clear_route_list (struct route_list *rl)
static void	clear_route_ipv6_list (struct route_ipv6_list *rl6)
void	route_list_add_vpn_gateway (struct route_list *rl, struct env_set *es, const in_addr_t addr)
static void	add_block_local_item (struct route_list *rl, const struct route_gateway_address *gateway, in_addr_t target)
static void	add_block_local_routes (struct route_list *rl)
bool	block_local_needed (const struct route_list *rl)
	Get the decision whether to block traffic to local networks while the VPN is connected.
bool	init_route_list (struct route_list *rl, const struct route_option_list *opt, const char *remote_endpoint, int default_metric, in_addr_t remote_host, struct env_set *es, openvpn_net_ctx_t *ctx)
bool	ipv6_net_contains_host (const struct in6_addr *network, unsigned int bits, const struct in6_addr *host)
	check whether an IPv6 host address is covered by a given network/bits
bool	init_route_ipv6_list (struct route_ipv6_list *rl6, const struct route_ipv6_option_list *opt6, const char *remote_endpoint, int default_metric, const struct in6_addr *remote_host_ipv6, struct env_set *es, openvpn_net_ctx_t *ctx)
static bool	add_route3 (in_addr_t network, in_addr_t netmask, in_addr_t gateway, const struct tuntap *tt, unsigned int flags, const struct route_gateway_info *rgi, const struct env_set *es, openvpn_net_ctx_t *ctx)
static void	del_route3 (in_addr_t network, in_addr_t netmask, in_addr_t gateway, const struct tuntap *tt, unsigned int flags, const struct route_gateway_info *rgi, const struct env_set *es, openvpn_net_ctx_t *ctx)
static bool	add_bypass_routes (struct route_bypass *rb, in_addr_t gateway, const struct tuntap *tt, unsigned int flags, const struct route_gateway_info *rgi, const struct env_set *es, openvpn_net_ctx_t *ctx)
static void	del_bypass_routes (struct route_bypass *rb, in_addr_t gateway, const struct tuntap *tt, unsigned int flags, const struct route_gateway_info *rgi, const struct env_set *es, openvpn_net_ctx_t *ctx)
static bool	redirect_default_route_to_vpn (struct route_list *rl, const struct tuntap *tt, unsigned int flags, const struct env_set *es, openvpn_net_ctx_t *ctx)
static void	undo_redirect_default_route_to_vpn (struct route_list *rl, const struct tuntap *tt, unsigned int flags, const struct env_set *es, openvpn_net_ctx_t *ctx)
bool	add_routes (struct route_list *rl, struct route_ipv6_list *rl6, const struct tuntap *tt, unsigned int flags, const struct env_set *es, openvpn_net_ctx_t *ctx)
void	delete_routes (struct route_list *rl, struct route_ipv6_list *rl6, const struct tuntap *tt, unsigned int flags, const struct env_set *es, openvpn_net_ctx_t *ctx)
void	delete_routes_v4 (struct route_list *rl, const struct tuntap *tt, unsigned int flags, const struct env_set *es, openvpn_net_ctx_t *ctx)
void	delete_routes_v6 (struct route_ipv6_list *rl6, const struct tuntap *tt, unsigned int flags, const struct env_set *es, openvpn_net_ctx_t *ctx)
static const char *	show_opt (const char *option)
static void	print_route_option (const struct route_option *ro, msglvl_t msglevel)
void	print_route_options (const struct route_option_list *rol, msglvl_t msglevel)
void	print_default_gateway (const msglvl_t msglevel, const struct route_gateway_info *rgi, const struct route_ipv6_gateway_info *rgi6)
static void	print_route (const struct route_ipv4 *r, msglvl_t msglevel)
void	print_routes (const struct route_list *rl, msglvl_t msglevel)
static void	setenv_route (struct env_set *es, const struct route_ipv4 *r, int i)
void	setenv_routes (struct env_set *es, const struct route_list *rl)
static void	setenv_route_ipv6 (struct env_set *es, const struct route_ipv6 *r6, int i)
void	setenv_routes_ipv6 (struct env_set *es, const struct route_ipv6_list *rl6)
static int	local_route (in_addr_t network, in_addr_t netmask, in_addr_t gateway, const struct route_gateway_info *rgi)
static bool	is_on_link (const int is_local_route, const unsigned int flags, const struct route_gateway_info *rgi)
bool	add_route (struct route_ipv4 *r, const struct tuntap *tt, unsigned int flags, const struct route_gateway_info *rgi, const struct env_set *es, openvpn_net_ctx_t *ctx)
void	route_ipv6_clear_host_bits (struct route_ipv6 *r6)
bool	add_route_ipv6 (struct route_ipv6 *r6, const struct tuntap *tt, unsigned int flags, const struct env_set *es, openvpn_net_ctx_t *ctx)
void	delete_route_ipv6 (const struct route_ipv6 *r6, const struct tuntap *tt, const struct env_set *es, openvpn_net_ctx_t *ctx)
static const MIB_IPFORWARDTABLE *	get_windows_routing_table (struct gc_arena *gc)
static int	test_route (const IP_ADAPTER_INFO *adapters, const in_addr_t gateway, DWORD *index)
static void	test_route_helper (bool *ret, int *count, int *good, int *ambig, const IP_ADAPTER_INFO *adapters, const in_addr_t gateway)
bool	test_routes (const struct route_list *rl, const struct tuntap *tt)
static const MIB_IPFORWARDROW *	get_default_gateway_row (const MIB_IPFORWARDTABLE *routes)
static DWORD	get_best_route (struct gc_arena *gc, SOCKADDR_INET *dest, MIB_IPFORWARD_ROW2 *best_route)
	Determines the best route to a destination for both IPv4 and IPv6.
void	get_default_gateway (struct route_gateway_info *rgi, in_addr_t dest, openvpn_net_ctx_t *ctx)
	Retrieves the best gateway for a given destination based on the routing table.
static DWORD	windows_route_find_if_index (const struct route_ipv4 *r, const struct tuntap *tt)
void	get_default_gateway_ipv6 (struct route_ipv6_gateway_info *rgi6, const struct in6_addr *dest, openvpn_net_ctx_t *ctx)
static int	do_route_service (const bool add, const route_message_t *rt, const DWORD size, HANDLE pipe)
static int	do_route_ipv4_service (const bool add, const struct route_ipv4 *r, const struct tuntap *tt)
static int	do_route_ipv6_service (const bool add, const struct route_ipv6 *r, const struct tuntap *tt)
static const char *	format_route_entry (const MIB_IPFORWARDROW *r, struct gc_arena *gc)
void	show_routes (msglvl_t msglevel)
bool	netmask_to_netbits (const in_addr_t network, const in_addr_t netmask, int *netbits)
int	netmask_to_netbits2 (in_addr_t netmask)
static void	add_host_route_if_nonlocal (struct route_bypass *rb, const in_addr_t addr)
static void	add_host_route_array (struct route_bypass *rb, const IP_ADDR_STRING *iplist)
int	test_local_addr (const in_addr_t addr, const struct route_gateway_info *rgi)

Macro Definition Documentation

LR_ERROR

#define LR_ERROR   2 /* caller should abort adding route */

Definition at line 1431 of file route.c.

LR_MATCH

#define LR_MATCH   1 /* route is local */

Definition at line 1430 of file route.c.

LR_NOMATCH

#define LR_NOMATCH   0 /* route is not local */

Definition at line 1429 of file route.c.

METRIC_NOT_USED

#define METRIC_NOT_USED   ((DWORD)-1)

Definition at line 59 of file route.c.

RTA_EEXIST

#define RTA_EEXIST   2 /* route not added as it already exists */

Definition at line 103 of file route.c.

RTA_ERROR

#define RTA_ERROR   0 /* route addition failed */

Definition at line 101 of file route.c.

RTA_SUCCESS

#define RTA_SUCCESS   1 /* route addition succeeded */

Definition at line 102 of file route.c.

Function Documentation

add_block_local_item()

static void add_block_local_item ( struct route_list *  rl, const struct route_gateway_address *  gateway, in_addr_t  target  )

static

Definition at line 544 of file route.c.

References ALLOC_OBJ_GC, route_ipv4::gateway, route_gateway_info::gateway, route_list::gc, route_gateway_address::netmask, route_ipv4::network, route_ipv4::next, r1, route_list::rgi, route_list::routes, and RT_DEFINED.

Referenced by add_block_local_routes().

add_block_local_routes()

static void add_block_local_routes ( struct route_list *  rl )

static

Definition at line 572 of file route.c.

References add_block_local_item(), add_bypass_address(), route_gateway_address::addr, route_gateway_info::addrs, route_special_addr::bypass, route_gateway_info::gateway, i, route_gateway_info::n_addrs, route_gateway_address::netmask, route_special_addr::remote_endpoint, route_list::rgi, and route_list::spec.

Referenced by init_route_list().

add_bypass_address()

static bool add_bypass_address ( struct route_bypass *  rb, const in_addr_t  a  )

static

Definition at line 106 of file route.c.

References route_bypass::bypass, i, route_bypass::n_bypass, and N_ROUTE_BYPASS.

Referenced by add_block_local_routes(), and add_host_route_if_nonlocal().

add_bypass_routes()

static bool add_bypass_routes ( struct route_bypass *  rb, in_addr_t  gateway, const struct tuntap *  tt, unsigned int  flags, const struct route_gateway_info *  rgi, const struct env_set *  es, openvpn_net_ctx_t *  ctx  )

static

Definition at line 908 of file route.c.

References add_route3(), route_bypass::bypass, es, route_ipv4::flags, route_ipv4::gateway, i, IPV4_NETMASK_HOST, route_bypass::n_bypass, and ROUTE_REF_GW.

Referenced by redirect_default_route_to_vpn().

add_host_route_array()

static void add_host_route_array ( struct route_bypass *  rb, const IP_ADDR_STRING *  iplist  )

static

Definition at line 3940 of file route.c.

References add_host_route_if_nonlocal(), getaddr(), and GETADDR_HOST_ORDER.

Referenced by get_bypass_addresses().

add_host_route_if_nonlocal()

static void add_host_route_if_nonlocal ( struct route_bypass *  rb, const in_addr_t  addr  )

static

Definition at line 3931 of file route.c.

References add_bypass_address(), IPV4_NETMASK_HOST, test_local_addr(), and TLA_NONLOCAL.

Referenced by add_host_route_array().

add_route()

bool add_route	(	struct route_ipv4 *	r,
		const struct tuntap *	tt,
		unsigned int	flags,
		const struct route_gateway_info *	rgi,
		const struct env_set *	es,
		openvpn_net_ctx_t *	ctx
	)

Definition at line 1476 of file route.c.

References route_gateway_info::adapter_index, add_route_ipapi(), add_route_service(), argv_free(), argv_msg(), argv_new(), argv_printf(), argv_printf_cat(), ASSERT, D_ROUTE, es, route_ipv4::flags, route_ipv4::gateway, gc, gc_free(), gc_new(), get_win_sys_path(), iface, is_on_link(), local_route(), LR_ERROR, M_FATAL, M_WARN, route_ipv4::metric, msg, net_ctx_reset(), netcmd_semaphore_lock(), netcmd_semaphore_release(), route_ipv4::netmask, netmask_to_netbits2(), route_ipv4::network, openvpn_execve_check(), print_in_addr_t(), ROUTE_METHOD_ADAPTIVE, ROUTE_METHOD_EXE, ROUTE_METHOD_IPAPI, ROUTE_METHOD_MASK, ROUTE_METHOD_SERVICE, RT_ADDED, RT_DEFINED, RT_METRIC_DEFINED, RTA_EEXIST, RTA_ERROR, RTA_SUCCESS, status, route_ipv4::table_id, TUN_ADAPTER_INDEX_INVALID, and WIN_ROUTE_PATH_SUFFIX.

Referenced by add_route3(), add_routes(), and do_ifconfig_ipv4().

add_route3()

static bool add_route3 ( in_addr_t  network, in_addr_t  netmask, in_addr_t  gateway, const struct tuntap *  tt, unsigned int  flags, const struct route_gateway_info *  rgi, const struct env_set *  es, openvpn_net_ctx_t *  ctx  )

static

Definition at line 880 of file route.c.

References add_route(), CLEAR, es, route_ipv4::flags, route_ipv4::gateway, route_ipv4::netmask, route_ipv4::network, and RT_DEFINED.

Referenced by add_bypass_routes(), redirect_default_route_to_vpn(), and undo_redirect_default_route_to_vpn().

add_route_ipapi()

static int add_route_ipapi ( const struct route_ipv4 *  r, const struct tuntap *  tt, DWORD  adapter_index  )

static

Definition at line 2710 of file route.c.

References CLEAR, D_ROUTE, route_ipv4::flags, route_ipv4::gateway, gc, gc_free(), gc_new(), M_WARN, route_ipv4::metric, METRIC_NOT_USED, msg, route_ipv4::netmask, route_ipv4::network, print_in_addr_t(), RT_METRIC_DEFINED, RTA_EEXIST, RTA_ERROR, RTA_SUCCESS, status, strerror_win32(), TUN_ADAPTER_INDEX_INVALID, and windows_route_find_if_index().

Referenced by add_route().

add_route_ipv6()

bool add_route_ipv6	(	struct route_ipv6 *	r6,
		const struct tuntap *	tt,
		unsigned int	flags,
		const struct env_set *	es,
		openvpn_net_ctx_t *	ctx
	)

Definition at line 1790 of file route.c.

References tuntap::actual_name, tuntap::adapter_index, add_route_ipv6_service(), argv_free(), argv_msg(), argv_new(), argv_printf(), argv_printf_cat(), D_ROUTE, DEV_TYPE_TAP, DEV_TYPE_TUN, es, gc, gc_free(), gc_malloc(), gc_new(), M_FATAL, M_WARN, msg, tuntap_options::msg_channel, net_ctx_reset(), openvpn_execve_check(), tuntap::options, print_in6_addr(), r6, route_ipv6_clear_host_bits(), route_ipv6_ipapi(), RT_ADDED, RT_DEFINED, RT_METRIC_DEFINED, RTA_EEXIST, RTA_ERROR, RTA_SUCCESS, status, and tuntap::type.

Referenced by add_route_connected_v6_net(), and add_routes().

add_route_ipv6_service()

static int add_route_ipv6_service ( const struct route_ipv6 *  r, const struct tuntap *  tt  )

static

Definition at line 3037 of file route.c.

References do_route_ipv6_service().

Referenced by add_route_ipv6().

add_route_ipv6_to_option_list()

void add_route_ipv6_to_option_list	(	struct route_ipv6_option_list *	l,
		const char *	prefix,
		const char *	gateway,
		const char *	metric,
		int	table_id
	)

Definition at line 507 of file route.c.

References ALLOC_OBJ_GC, route_ipv6_option::gateway, route_ipv6_option_list::gc, route_ipv6_option::metric, route_ipv6_option::next, route_ipv6_option::prefix, route_ipv6_option_list::routes_ipv6, and route_ipv6_option::table_id.

Referenced by add_option(), and do_init_route_ipv6_list().

add_route_service()

static int add_route_service ( const struct route_ipv4 *  r, const struct tuntap *  tt  )

static

Definition at line 3024 of file route.c.

References do_route_ipv4_service().

Referenced by add_route().

add_route_to_option_list()

void add_route_to_option_list	(	struct route_option_list *	l,
		const char *	network,
		const char *	netmask,
		const char *	gateway,
		const char *	metric,
		int	table_id
	)

Definition at line 492 of file route.c.

References ALLOC_OBJ_GC, route_option::gateway, route_option_list::gc, route_option::metric, route_option::netmask, route_option::network, route_option::next, route_option_list::routes, and route_option::table_id.

Referenced by add_option(), and helper_add_route().

add_routes()

bool add_routes	(	struct route_list *	rl,
		struct route_ipv6_list *	rl6,
		const struct tuntap *	tt,
		unsigned int	flags,
		const struct env_set *	es,
		openvpn_net_ctx_t *	ctx
	)

Definition at line 1097 of file route.c.

References tuntap::actual_name, add_route(), add_route_ipv6(), delete_route(), delete_route_ipv6(), tuntap::did_ifconfig_ipv6_setup, tuntap::did_ifconfig_setup, es, route_ipv4::flags, route_ipv6::flags, route_list::iflags, route_ipv6_list::iflags, M_INFO, management_set_state(), msg, route_ipv4::next, route_ipv6::next, OPENVPN_STATE_ADD_ROUTES, redirect_default_route_to_vpn(), route_list::rgi, RL_ROUTES_ADDED, ROUTE_DELETE_FIRST, route_list::routes, and route_ipv6_list::routes_ipv6.

Referenced by do_route().

block_local_needed()

bool block_local_needed

(

const struct route_list *

rl

)

Get the decision whether to block traffic to local networks while the VPN is connected.

This definitely returns false when not redirecting the gateway or when the 'block-local' flag is not set. Also checks for other prerequisites to redirect local networks into the tunnel.

Parameters

rl	const pointer to the struct route_list to base the decision on.

Returns

boolean indicating whether local traffic should be blocked.

Definition at line 596 of file route.c.

References route_special_addr::flags, route_gateway_info::flags, route_list::flags, route_special_addr::remote_host_local, RG_BLOCK_LOCAL, route_list::rgi, RGI_ADDR_DEFINED, RGI_NETMASK_DEFINED, RTSA_REMOTE_ENDPOINT, route_list::spec, and TLA_LOCAL.

Referenced by add_wfp_block(), del_wfp_block(), and init_route_list().

clear_route_ipv6_list()

static void clear_route_ipv6_list ( struct route_ipv6_list *  rl6 )

static

Definition at line 528 of file route.c.

References CLEAR, route_ipv6_list::gc, and gc_free().

Referenced by delete_routes_v6(), and init_route_ipv6_list().

clear_route_list()

static void clear_route_list ( struct route_list *  rl )

static

Definition at line 521 of file route.c.

References CLEAR, route_list::gc, and gc_free().

Referenced by delete_routes_v4(), and init_route_list().

clone_route_ipv6_option_list()

struct route_ipv6_option_list * clone_route_ipv6_option_list	(	const struct route_ipv6_option_list *	src,
		struct gc_arena *	a
	)

Definition at line 162 of file route.c.

References ALLOC_OBJ_GC.

Referenced by pre_connect_save().

clone_route_option_list()

struct route_option_list * clone_route_option_list	(	const struct route_option_list *	src,
		struct gc_arena *	a
	)

Definition at line 153 of file route.c.

References ALLOC_OBJ_GC.

Referenced by pre_connect_save().

copy_route_ipv6_option_list()

void copy_route_ipv6_option_list	(	struct route_ipv6_option_list *	dest,
		const struct route_ipv6_option_list *	src,
		struct gc_arena *	a
	)

Definition at line 179 of file route.c.

References route_ipv6_option_list::gc.

Referenced by pre_connect_restore().

copy_route_option_list()

void copy_route_option_list	(	struct route_option_list *	dest,
		const struct route_option_list *	src,
		struct gc_arena *	a
	)

Definition at line 171 of file route.c.

References route_option_list::gc.

Referenced by pre_connect_restore().

del_bypass_routes()

static void del_bypass_routes ( struct route_bypass *  rb, in_addr_t  gateway, const struct tuntap *  tt, unsigned int  flags, const struct route_gateway_info *  rgi, const struct env_set *  es, openvpn_net_ctx_t *  ctx  )

static

Definition at line 926 of file route.c.

References route_bypass::bypass, del_route3(), es, route_ipv4::flags, route_ipv4::gateway, i, IPV4_NETMASK_HOST, route_bypass::n_bypass, and ROUTE_REF_GW.

Referenced by undo_redirect_default_route_to_vpn().

del_route3()

static void del_route3 ( in_addr_t  network, in_addr_t  netmask, in_addr_t  gateway, const struct tuntap *  tt, unsigned int  flags, const struct route_gateway_info *  rgi, const struct env_set *  es, openvpn_net_ctx_t *  ctx  )

static

Definition at line 894 of file route.c.

References CLEAR, delete_route(), es, route_ipv4::flags, route_ipv4::gateway, route_ipv4::netmask, route_ipv4::network, RT_ADDED, and RT_DEFINED.

Referenced by del_bypass_routes(), redirect_default_route_to_vpn(), and undo_redirect_default_route_to_vpn().

del_route_ipapi()

static bool del_route_ipapi ( const struct route_ipv4 *  r, const struct tuntap *  tt  )

static

Definition at line 2806 of file route.c.

References CLEAR, route_ipv4::gateway, gc, gc_free(), gc_new(), M_WARN, msg, route_ipv4::netmask, route_ipv4::network, status, strerror_win32(), TUN_ADAPTER_INDEX_INVALID, and windows_route_find_if_index().

Referenced by delete_route().

del_route_ipv6_service()

static bool del_route_ipv6_service ( const struct route_ipv6 *  r, const struct tuntap *  tt  )

static

Definition at line 3043 of file route.c.

References do_route_ipv6_service().

Referenced by delete_route_ipv6().

del_route_service()

static bool del_route_service ( const struct route_ipv4 *  r, const struct tuntap *  tt  )

static

Definition at line 3030 of file route.c.

References do_route_ipv4_service().

Referenced by delete_route().

delete_route()

static void delete_route ( struct route_ipv4 *  r, const struct tuntap *  tt, unsigned int  flags, const struct route_gateway_info *  rgi, const struct env_set *  es, openvpn_net_ctx_t *  ctx  )

static

Definition at line 2026 of file route.c.

References argv_free(), argv_msg(), argv_new(), argv_printf(), ASSERT, D_ROUTE, D_ROUTE_DEBUG, del_route_ipapi(), del_route_service(), es, route_ipv4::flags, route_ipv4::gateway, gc, gc_free(), gc_new(), get_win_sys_path(), is_on_link(), local_route(), LR_ERROR, M_FATAL, M_WARN, route_ipv4::metric, msg, net_ctx_reset(), netcmd_semaphore_lock(), netcmd_semaphore_release(), route_ipv4::netmask, netmask_to_netbits2(), route_ipv4::network, openvpn_execve_check(), print_in_addr_t(), ROUTE_METHOD_ADAPTIVE, ROUTE_METHOD_EXE, ROUTE_METHOD_IPAPI, ROUTE_METHOD_MASK, ROUTE_METHOD_SERVICE, RT_ADDED, RT_DEFINED, RT_METRIC_DEFINED, status, route_ipv4::table_id, and WIN_ROUTE_PATH_SUFFIX.

Referenced by add_routes(), del_route3(), and delete_routes_v4().

delete_route_ipv6()

void delete_route_ipv6	(	const struct route_ipv6 *	r6,
		const struct tuntap *	tt,
		const struct env_set *	es,
		openvpn_net_ctx_t *	ctx
	)

Definition at line 2198 of file route.c.

References tuntap::actual_name, argv_free(), argv_msg(), argv_new(), argv_printf(), argv_printf_cat(), D_ROUTE, D_ROUTE_DEBUG, del_route_ipv6_service(), DEV_TYPE_TAP, es, gc, gc_free(), gc_malloc(), gc_new(), M_FATAL, M_WARN, msg, tuntap_options::msg_channel, net_ctx_reset(), openvpn_execve_check(), tuntap::options, print_in6_addr(), r6, route_ipv6_ipapi(), RT_ADDED, RT_DEFINED, RT_METRIC_DEFINED, and tuntap::type.

Referenced by add_routes(), delete_route_connected_v6_net(), and delete_routes_v6().

delete_routes()

void delete_routes	(	struct route_list *	rl,
		struct route_ipv6_list *	rl6,
		const struct tuntap *	tt,
		unsigned int	flags,
		const struct env_set *	es,
		openvpn_net_ctx_t *	ctx
	)

Definition at line 1162 of file route.c.

References delete_routes_v4(), delete_routes_v6(), es, and route_ipv6::flags.

Referenced by do_close_tun().

delete_routes_v4()

void delete_routes_v4	(	struct route_list *	rl,
		const struct tuntap *	tt,
		unsigned int	flags,
		const struct env_set *	es,
		openvpn_net_ctx_t *	ctx
	)

Definition at line 1170 of file route.c.

References clear_route_list(), delete_route(), es, route_ipv4::flags, route_list::iflags, route_ipv4::next, route_list::rgi, RL_ROUTES_ADDED, route_list::routes, and undo_redirect_default_route_to_vpn().

Referenced by delete_routes(), remove_option(), and update_option().

delete_routes_v6()

void delete_routes_v6	(	struct route_ipv6_list *	rl6,
		const struct tuntap *	tt,
		unsigned int	flags,
		const struct env_set *	es,
		openvpn_net_ctx_t *	ctx
	)

Definition at line 1192 of file route.c.

References clear_route_ipv6_list(), delete_route_ipv6(), es, route_ipv6_list::iflags, r6, RL_ROUTES_ADDED, and route_ipv6_list::routes_ipv6.

Referenced by delete_routes(), remove_option(), and update_option().

do_route_ipv4_service()

static int do_route_ipv4_service ( const bool  add, const struct route_ipv4 *  r, const struct tuntap *  tt  )

static

Definition at line 2875 of file route.c.

References do_route_service(), route_ipv4::flags, route_ipv4::gateway, route_message_t::header, route_ipv4::metric, msg, msg_add_route, tuntap_options::msg_channel, msg_del_route, route_ipv4::netmask, netmask_to_netbits(), route_ipv4::network, tuntap::options, RT_METRIC_DEFINED, RTA_ERROR, and windows_route_find_if_index().

Referenced by add_route_service(), and del_route_service().

do_route_ipv6_service()

static int do_route_ipv6_service ( const bool  add, const struct route_ipv6 *  r, const struct tuntap *  tt  )

static

Definition at line 2981 of file route.c.

References tuntap::actual_name, route_ipv6::adapter_index, tuntap::adapter_index, D_ROUTE, DEV_TYPE_TUN, do_route_service(), route_ipv6::flags, route_ipv6::gateway, route_message_t::header, route_ipv6::metric, msg, msg_add_route, tuntap_options::msg_channel, msg_del_route, route_ipv6::netbits, route_ipv6::network, tuntap::options, RT_METRIC_DEFINED, RTA_ERROR, RTA_SUCCESS, status, TUN_ADAPTER_INDEX_INVALID, and tuntap::type.

Referenced by add_route_ipv6_service(), and del_route_ipv6_service().

do_route_service()

static int do_route_service ( const bool  add, const route_message_t *  rt, const DWORD  size, HANDLE  pipe  )

static

Definition at line 2843 of file route.c.

References ack_message_t::error_number, gc, gc_free(), gc_new(), route_message_t::iface, interface_t::index, M_WARN, msg, RTA_EEXIST, RTA_ERROR, RTA_SUCCESS, send_msg_iservice(), and strerror_win32().

Referenced by do_route_ipv4_service(), and do_route_ipv6_service().

format_route_entry()

static const char * format_route_entry ( const MIB_IPFORWARDROW *  r, struct gc_arena *  gc  )

static

Definition at line 3049 of file route.c.

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

Referenced by show_routes().

get_best_route()

static DWORD get_best_route ( struct gc_arena *  gc, SOCKADDR_INET *  dest, MIB_IPFORWARD_ROW2 *  best_route  )

static

Determines the best route to a destination for both IPv4 and IPv6.

Uses GetBestInterfaceEx and GetBestRoute2 to find the optimal route and network interface for the specified destination address.

Parameters

gc	Pointer to struct gc_arena for internal string allocation.
dest	The destination IP address (IPv4 or IPv6).
best_route	Pointer to a MIB_IPFORWARD_ROW2 structure to store the best route.

Returns

DWORD NO_ERROR on success, or an error code.

Definition at line 2530 of file route.c.

References CLEAR, D_ROUTE, D_ROUTE_DEBUG, gc, msg, status, and strerror_win32().

Referenced by get_default_gateway(), and get_default_gateway_ipv6().

get_bypass_addresses()

static void get_bypass_addresses ( struct route_bypass *  rb, const unsigned int  flags  )

static

Definition at line 3956 of file route.c.

References add_host_route_array(), gc, gc_free(), gc_new(), get_adapter_info(), get_default_gateway_row(), get_per_adapter_info(), get_windows_routing_table(), RG_BYPASS_DHCP, and RG_BYPASS_DNS.

Referenced by init_route_list().

get_default_gateway()

void get_default_gateway	(	struct route_gateway_info *	rgi,
		in_addr_t	dest,
		openvpn_net_ctx_t *	ctx
	)

Retrieves the best gateway for a given destination based on the routing table.

Parameters

rgi	Pointer to a struct to store the gateway information.
dest	Destination IP address in host byte order.
ctx	Pointer to a platform-specific network context struct.

Definition at line 2566 of file route.c.

References route_gateway_info::adapter_index, route_gateway_address::addr, CLEAR, route_gateway_info::flags, route_gateway_info::gateway, gc, gc_free(), gc_new(), get_adapter(), get_adapter_info_list(), get_best_route(), route_gateway_info::hwaddr, route_gateway_address::netmask, RGI_ADDR_DEFINED, RGI_HWADDR_DEFINED, RGI_IFACE_DEFINED, RGI_NETMASK_DEFINED, RGI_ON_LINK, and status.

Referenced by add_option(), init_route_list(), push_peer_info(), and warn_on_use_of_common_subnets().

get_default_gateway_ipv6()

void get_default_gateway_ipv6	(	struct route_ipv6_gateway_info *	rgi6,
		const struct in6_addr *	dest,
		openvpn_net_ctx_t *	ctx
	)

Definition at line 2664 of file route.c.

References route_ipv6_gateway_info::adapter_index, route_ipv6_gateway_address::addr_ipv6, CLEAR, D_ROUTE, route_ipv6_gateway_info::flags, route_ipv6_gateway_info::gateway, gc, gc_free(), gc_new(), get_best_route(), msg, print_in6_addr(), RGI_ADDR_DEFINED, RGI_IFACE_DEFINED, RGI_ON_LINK, and status.

Referenced by add_option(), and init_route_ipv6_list().

get_default_gateway_row()

static const MIB_IPFORWARDROW * get_default_gateway_row ( const MIB_IPFORWARDTABLE *  routes )

static

Definition at line 2482 of file route.c.

References D_ROUTE_DEBUG, dmsg, gc, gc_free(), gc_new(), i, and print_in_addr_t().

Referenced by get_bypass_addresses().

get_special_addr()

static bool get_special_addr ( const struct route_list *  rl, const char *  string, in_addr_t *  out, bool *  status  )

static

Definition at line 231 of file route.c.

References buffer::len, M_INFO, msg, RGI_ADDR_DEFINED, RTSA_REMOTE_ENDPOINT, RTSA_REMOTE_HOST, and status.

Referenced by init_route(), and is_special_addr().

get_windows_routing_table()

static const MIB_IPFORWARDTABLE * get_windows_routing_table ( struct gc_arena *  gc )

static

Definition at line 2380 of file route.c.

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

Referenced by get_bypass_addresses(), show_routes(), and test_local_addr().

init_route()

static bool init_route ( struct route_ipv4 *  r, struct addrinfo **  network_list, const struct route_option *  ro, const struct route_list *  rl  )

static

Definition at line 312 of file route.c.

References CLEAR, route_special_addr::default_metric, route_special_addr::flags, route_ipv4::flags, route_option::gateway, route_ipv4::gateway, get_special_addr(), getaddr(), GETADDR_HOST_ORDER, GETADDR_RESOLVE, GETADDR_WARN_ON_SIGNAL, IPV4_NETMASK_HOST, is_route_parm_defined(), buffer::len, M_WARN, route_option::metric, route_ipv4::metric, msg, route_option::netmask, route_ipv4::netmask, route_option::network, openvpn_getaddrinfo(), route_ipv4::option, route_special_addr::remote_endpoint, RT_DEFINED, RT_METRIC_DEFINED, RTSA_DEFAULT_METRIC, RTSA_REMOTE_ENDPOINT, route_list::spec, status, route_option::table_id, and route_ipv4::table_id.

Referenced by init_route_list().

init_route_ipv6()

static bool init_route_ipv6 ( struct route_ipv6 *  r6, const struct route_ipv6_option *  r6o, const struct route_ipv6_list *  rl6  )

static

Definition at line 435 of file route.c.

References CLEAR, route_ipv6_list::default_metric, route_ipv6_option::gateway, get_ipv6_addr(), is_route_parm_defined(), M_WARN, route_ipv6_option::metric, msg, route_ipv6_option::prefix, r6, route_ipv6_list::remote_endpoint_ipv6, RT_DEFINED, RT_METRIC_DEFINED, RTSA_DEFAULT_METRIC, RTSA_REMOTE_ENDPOINT, route_ipv6_list::spec_flags, and route_ipv6_option::table_id.

Referenced by init_route_ipv6_list().

init_route_ipv6_list()

bool init_route_ipv6_list	(	struct route_ipv6_list *	rl6,
		const struct route_ipv6_option_list *	opt6,
		const char *	remote_endpoint,
		int	default_metric,
		const struct in6_addr *	remote_host_ipv6,
		struct env_set *	es,
		openvpn_net_ctx_t *	ctx
	)

Definition at line 748 of file route.c.

References route_ipv6_gateway_info::adapter_index, route_ipv6_gateway_address::addr_ipv6, ALLOC_OBJ_CLEAR_GC, ALLOC_OBJ_GC, clear_route_ipv6_list(), D_ROUTE, route_ipv6_list::default_metric, dmsg, es, route_ipv6_option_list::flags, route_ipv6_gateway_info::flags, route_ipv6_list::flags, route_ipv6_gateway_info::gateway, route_ipv6_list::gc, gc, gc_free(), gc_new(), get_default_gateway_ipv6(), init_route_ipv6(), ipv6_net_contains_host(), is_route_parm_defined(), M_WARN, msg, route_ipv6_option::next, print_default_gateway(), print_in6_addr(), r6, route_ipv6_list::remote_endpoint_ipv6, route_ipv6_list::remote_host_ipv6, route_ipv6_list::rgi6, RGI_ADDR_DEFINED, RGI_IFACE_DEFINED, RGI_ON_LINK, route_ipv6_option_list::routes_ipv6, route_ipv6_list::routes_ipv6, RT_DEFINED, RT_METRIC_DEFINED, RTSA_DEFAULT_METRIC, RTSA_REMOTE_ENDPOINT, RTSA_REMOTE_HOST, setenv_str(), and route_ipv6_list::spec_flags.

Referenced by do_init_route_ipv6_list().

init_route_list()

bool init_route_list	(	struct route_list *	rl,
		const struct route_option_list *	opt,
		const char *	remote_endpoint,
		int	default_metric,
		in_addr_t	remote_host,
		struct env_set *	es,
		openvpn_net_ctx_t *	ctx
	)

Definition at line 604 of file route.c.

References add_block_local_routes(), route_gateway_address::addr, ALLOC_OBJ_GC, block_local_needed(), route_special_addr::bypass, clear_route_list(), D_ROUTE, route_special_addr::default_metric, dmsg, es, route_special_addr::flags, route_option_list::flags, route_gateway_info::flags, route_list::flags, route_gateway_info::gateway, route_list::gc, gc, gc_addspecial(), gc_free(), gc_freeaddrinfo_callback(), gc_new(), get_bypass_addresses(), get_default_gateway(), getaddr(), GETADDR_HOST_ORDER, GETADDR_RESOLVE, GETADDR_WARN_ON_SIGNAL, init_route(), IPV4_INVALID_ADDR, is_route_parm_defined(), M_WARN, msg, route_ipv4::network, route_option::next, print_default_gateway(), route_special_addr::remote_endpoint, route_special_addr::remote_host, route_special_addr::remote_host_local, RG_ENABLE, route_list::rgi, RGI_ADDR_DEFINED, route_option_list::routes, route_list::routes, RTSA_DEFAULT_METRIC, RTSA_REMOTE_ENDPOINT, RTSA_REMOTE_HOST, setenv_route_addr(), route_list::spec, and test_local_addr().

Referenced by do_init_route_list().

ipv6_net_contains_host()

bool ipv6_net_contains_host	(	const struct in6_addr *	network,
		unsigned int	bits,
		const struct in6_addr *	host
	)

check whether an IPv6 host address is covered by a given network/bits

Parameters

network	the network address
bits	the network mask
host	the host address to be checked if it is contained by the network

Returns

true if the host address is covered by the network with the given network mask by bits

Definition at line 714 of file route.c.

References i, and route_ipv4::network.

Referenced by init_route_ipv6_list().

is_on_link()

static bool is_on_link ( const int  is_local_route, const unsigned int  flags, const struct route_gateway_info *  rgi  )

inlinestatic

Definition at line 1467 of file route.c.

References route_gateway_info::flags, LR_MATCH, RGI_ON_LINK, and ROUTE_REF_GW.

Referenced by add_route(), and delete_route().

is_route_parm_defined()

static bool is_route_parm_defined ( const char *  parm )

static

Definition at line 200 of file route.c.

References buffer::len.

Referenced by init_route(), init_route_ipv6(), init_route_ipv6_list(), and init_route_list().

is_special_addr()

bool is_special_addr

(

const char *

addr_str

)

Definition at line 299 of file route.c.

References get_special_addr(), and buffer::len.

Referenced by add_option(), and check_route_option().

local_route()

static int local_route ( in_addr_t  network, in_addr_t  netmask, in_addr_t  gateway, const struct route_gateway_info *  rgi  )

static

Definition at line 1434 of file route.c.

References route_gateway_address::addr, route_gateway_info::addrs, route_gateway_info::flags, route_ipv6::gateway, route_gateway_info::gateway, i, LR_MATCH, LR_NOMATCH, route_gateway_info::n_addrs, route_gateway_address::netmask, route_ipv6::network, RGI_ADDR_DEFINED, RGI_IFACE_DEFINED, and RGI_NETMASK_DEFINED.

Referenced by add_route(), and delete_route().

netmask_to_netbits()

bool netmask_to_netbits	(	const in_addr_t	network,
		const in_addr_t	netmask,
		int *	netbits
	)

Definition at line 3874 of file route.c.

References i, and netbits_to_netmask().

Referenced by do_route_ipv4_service(), and helper_client_server().

netmask_to_netbits2()

int netmask_to_netbits2

(

in_addr_t

netmask

)

Definition at line 3905 of file route.c.

References i, and netbits_to_netmask().

Referenced by add_route(), delete_route(), do_address_service(), do_ifconfig_ipv4(), option_iroute(), and undo_ifconfig_ipv4().

new_route_ipv6_option_list()

struct route_ipv6_option_list * new_route_ipv6_option_list

(

struct gc_arena *

a

)

Definition at line 137 of file route.c.

References ALLOC_OBJ_CLEAR_GC, and route_ipv6_option_list::gc.

Referenced by rol6_check_alloc().

new_route_option_list()

struct route_option_list * new_route_option_list

(

struct gc_arena *

a

)

Definition at line 128 of file route.c.

References ALLOC_OBJ_CLEAR_GC, and route_option_list::gc.

Referenced by rol_check_alloc().

print_default_gateway()

void print_default_gateway	(	const msglvl_t	msglevel,
		const struct route_gateway_info *	rgi,
		const struct route_ipv6_gateway_info *	rgi6
	)

Definition at line 1248 of file route.c.

References route_gateway_info::adapter_index, route_ipv6_gateway_info::adapter_index, route_gateway_address::addr, route_ipv6_gateway_address::addr_ipv6, alloc_buf_gc(), BSTR, buf_printf(), route_gateway_info::flags, route_ipv6_gateway_info::flags, format_hex_ex(), route_gateway_info::gateway, route_ipv6_gateway_info::gateway, gc, gc_free(), gc_new(), route_gateway_info::hwaddr, route_ipv6_gateway_info::hwaddr, msg, route_ipv6_gateway_address::netbits_ipv6, route_gateway_address::netmask, print_in6_addr(), print_in_addr_t(), RGI_ADDR_DEFINED, RGI_HWADDR_DEFINED, RGI_IFACE_DEFINED, RGI_NETMASK_DEFINED, and RGI_ON_LINK.

Referenced by add_option(), init_route_ipv6_list(), and init_route_list().

print_route()

static void print_route ( const struct route_ipv4 *  r, msglvl_t  msglevel  )

static

Definition at line 1322 of file route.c.

References route_ipv4::flags, gc, gc_free(), gc_new(), msg, route_string(), and RT_DEFINED.

Referenced by print_routes().

print_route_option()

static void print_route_option ( const struct route_option *  ro, msglvl_t  msglevel  )

static

Definition at line 1227 of file route.c.

References route_option::gateway, route_option::metric, msg, route_option::netmask, route_option::network, and show_opt().

Referenced by print_route_options().

print_route_options()

void print_route_options	(	const struct route_option_list *	rol,
		msglvl_t	msglevel
	)

Definition at line 1234 of file route.c.

References route_option_list::flags, msg, route_option::next, print_route_option(), RG_ENABLE, RG_LOCAL, and route_option_list::routes.

Referenced by show_settings().

print_routes()

void print_routes	(	const struct route_list *	rl,
		msglvl_t	msglevel
	)

Definition at line 1333 of file route.c.

References route_ipv4::next, print_route(), and route_list::routes.

redirect_default_route_to_vpn()

static bool redirect_default_route_to_vpn ( struct route_list *  rl, const struct tuntap *  tt, unsigned int  flags, const struct env_set *  es, openvpn_net_ctx_t *  ctx  )

static

Definition at line 942 of file route.c.

References add_bypass_routes(), add_route3(), route_gateway_address::addr, route_special_addr::bypass, D_ROUTE, del_route3(), dmsg, es, route_special_addr::flags, route_ipv4::flags, route_gateway_info::flags, route_list::flags, route_gateway_info::gateway, route_list::iflags, IPV4_INVALID_ADDR, IPV4_NETMASK_HOST, M_WARN, msg, route_special_addr::remote_endpoint, route_special_addr::remote_host, route_special_addr::remote_host_local, RG_AUTO_LOCAL, RG_DEF1, RG_ENABLE, RG_LOCAL, RG_REROUTE_GW, route_list::rgi, RGI_ADDR_DEFINED, RL_DID_LOCAL, RL_DID_REDIRECT_DEFAULT_GATEWAY, ROUTE_REF_GW, RTSA_REMOTE_ENDPOINT, RTSA_REMOTE_HOST, route_list::spec, TLA_LOCAL, and TLA_NONLOCAL.

Referenced by add_routes().

route_ipv6_clear_host_bits()

void route_ipv6_clear_host_bits

(

struct route_ipv6 *

r6

)

Definition at line 1765 of file route.c.

References r6.

Referenced by add_route_ipv6(), and delete_route_connected_v6_net().

route_ipv6_ipapi()

static int route_ipv6_ipapi ( bool  add, const struct route_ipv6 *  r, const struct tuntap *  tt  )

static

Definition at line 2904 of file route.c.

References tuntap::actual_name, route_ipv6::adapter_index, tuntap::adapter_index, D_ROUTE, DEV_TYPE_TUN, route_ipv6::flags, route_ipv6::gateway, gc, gc_free(), gc_malloc(), gc_new(), M_WARN, route_ipv6::metric, msg, route_ipv6::netbits, route_ipv6::network, RT_METRIC_DEFINED, RTA_EEXIST, RTA_ERROR, RTA_SUCCESS, strerror_win32(), TUN_ADAPTER_INDEX_INVALID, tuntap::type, and wide_string().

Referenced by add_route_ipv6(), and delete_route_ipv6().

route_list_add_vpn_gateway()

void route_list_add_vpn_gateway	(	struct route_list *	rl,
		struct env_set *	es,
		const in_addr_t	addr
	)

Definition at line 535 of file route.c.

References ASSERT, es, route_special_addr::flags, route_special_addr::remote_endpoint, RTSA_REMOTE_ENDPOINT, setenv_route_addr(), and route_list::spec.

Referenced by process_ip_header().

route_string()

static const char * route_string ( const struct route_ipv4 *  r, struct gc_arena *  gc  )

static

Definition at line 187 of file route.c.

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

Referenced by print_route().

setenv_route()

static void setenv_route ( struct env_set *  es, const struct route_ipv4 *  r, int  i  )

static

Definition at line 1343 of file route.c.

References alloc_buf_gc(), BSTR, buf_printf(), es, route_ipv4::flags, route_ipv4::gateway, gc, gc_free(), gc_new(), i, buffer::len, route_ipv4::netmask, route_ipv4::network, RT_DEFINED, RT_METRIC_DEFINED, setenv_int(), and setenv_route_addr().

Referenced by setenv_routes().

setenv_route_addr()

static void setenv_route_addr ( struct env_set *  es, const char *  key, const in_addr_t  addr, int  i  )

static

Definition at line 214 of file route.c.

References alloc_buf_gc(), BSTR, buf_printf(), es, gc, gc_free(), gc_new(), i, print_in_addr_t(), and setenv_str().

Referenced by init_route_list(), route_list_add_vpn_gateway(), and setenv_route().

setenv_route_ipv6()

static void setenv_route_ipv6 ( struct env_set *  es, const struct route_ipv6 *  r6, int  i  )

static

Definition at line 1374 of file route.c.

References alloc_buf_gc(), BSTR, buf_printf(), es, gc, gc_free(), gc_new(), i, buffer::len, print_in6_addr(), r6, RT_DEFINED, RT_METRIC_DEFINED, setenv_int(), and setenv_str().

Referenced by setenv_routes_ipv6().

setenv_routes()

void setenv_routes	(	struct env_set *	es,
		const struct route_list *	rl
	)

Definition at line 1363 of file route.c.

References es, i, route_ipv4::next, route_list::routes, and setenv_route().

Referenced by do_init_route_list().

setenv_routes_ipv6()

void setenv_routes_ipv6	(	struct env_set *	es,
		const struct route_ipv6_list *	rl6
	)

Definition at line 1400 of file route.c.

References es, i, r6, route_ipv6_list::routes_ipv6, and setenv_route_ipv6().

Referenced by do_init_route_ipv6_list().

show_opt()

static const char * show_opt ( const char *  option )

static

Definition at line 1214 of file route.c.

Referenced by print_route_option().

show_routes()

void show_routes

(

msglvl_t

msglevel

)

Definition at line 3067 of file route.c.

References format_route_entry(), gc, gc_free(), gc_new(), get_windows_routing_table(), i, and msg.

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

test_local_addr()

int test_local_addr	(	const in_addr_t	addr,
		const struct route_gateway_info *	rgi
	)

Definition at line 4012 of file route.c.

References gc, gc_free(), gc_new(), get_windows_routing_table(), i, TLA_LOCAL, and TLA_NONLOCAL.

Referenced by add_host_route_if_nonlocal(), and init_route_list().

test_route()

static int test_route ( const IP_ADAPTER_INFO *  adapters, const in_addr_t  gateway, DWORD *  index  )

static

Definition at line 2402 of file route.c.

References adapter_index_of_ip(), and i.

Referenced by test_route_helper(), and windows_route_find_if_index().

test_route_helper()

static void test_route_helper ( bool *  ret, int *  count, int *  good, int *  ambig, const IP_ADAPTER_INFO *  adapters, const in_addr_t  gateway  )

static

Definition at line 2414 of file route.c.

References test_route().

Referenced by test_routes().

test_routes()

bool test_routes	(	const struct route_list *	rl,
		const struct tuntap *	tt
	)

Definition at line 2439 of file route.c.

References D_ROUTE, tuntap::did_ifconfig_setup, route_special_addr::flags, route_list::flags, route_ipv4::gateway, gc, gc_free(), gc_new(), get_adapter_info_list(), is_adapter_up(), msg, route_ipv4::next, route_special_addr::remote_endpoint, RG_ENABLE, route_list::routes, RTSA_REMOTE_ENDPOINT, route_list::spec, and test_route_helper().

Referenced by check_add_routes().

undo_redirect_default_route_to_vpn()

static void undo_redirect_default_route_to_vpn ( struct route_list *  rl, const struct tuntap *  tt, unsigned int  flags, const struct env_set *  es, openvpn_net_ctx_t *  ctx  )

static

Definition at line 1050 of file route.c.

References add_route3(), route_gateway_address::addr, route_special_addr::bypass, del_bypass_routes(), del_route3(), es, route_ipv4::flags, route_gateway_info::flags, route_list::flags, route_gateway_info::gateway, route_list::iflags, IPV4_NETMASK_HOST, route_special_addr::remote_endpoint, route_special_addr::remote_host, RG_DEF1, RG_REROUTE_GW, route_list::rgi, RGI_ADDR_DEFINED, RL_DID_LOCAL, RL_DID_REDIRECT_DEFAULT_GATEWAY, ROUTE_REF_GW, and route_list::spec.

Referenced by delete_routes_v4().

windows_route_find_if_index()

static DWORD windows_route_find_if_index ( const struct route_ipv4 *  r, const struct tuntap *  tt  )

static

Definition at line 2618 of file route.c.

References D_ROUTE_DEBUG, dmsg, route_ipv4::gateway, gc, gc_free(), gc_new(), get_adapter_info_list(), get_tun_adapter(), is_ip_in_adapter_subnet(), M_WARN, msg, print_in_addr_t(), test_route(), and TUN_ADAPTER_INDEX_INVALID.

Referenced by add_route_ipapi(), del_route_ipapi(), and do_route_ipv4_service().