#include "service.h"
#include <ws2tcpip.h>
#include <iphlpapi.h>
#include <userenv.h>
#include <accctrl.h>
#include <aclapi.h>
#include <stdio.h>
#include <sddl.h>
#include <shellapi.h>
#include <mstcpip.h>
#include <inttypes.h>
#include <versionhelpers.h>
#include "openvpn-msg.h"
#include "validate.h"
#include "wfp_block.h"

Include dependency graph for interactive.c:

Data Structures
struct	STARTUP_DATA

struct	_list_item

struct	wfp_block_data_t

struct	dns_domains_undo_data_t

union	pipe_message_t

struct	nrpt_exclude_data_t

Macros
#define	IO_TIMEOUT 2000 /ms/

#define	ERROR_OPENVPN_STARTUP 0x20000000

#define	ERROR_STARTUP_DATA 0x20000001

#define	ERROR_MESSAGE_DATA 0x20000002

#define	ERROR_MESSAGE_TYPE 0x20000003

#define	RDNS_TIMEOUT 600 /* seconds to wait for the semaphore */

#define	TUN_IOCTL_REGISTER_RINGS CTL_CODE(51820U, 0x970U, METHOD_BUFFERED, FILE_READ_DATA \| FILE_WRITE_DATA)

Typedefs
typedef struct _list_item	list_item_t

typedef list_item_t *	undo_lists_t[_undo_type_max]

typedef BOOL(*	match_fn_t) (LPVOID item, LPVOID ctx)

Enumerations
enum	undo_type_t { address , route , wfp_block , undo_dns4 , undo_dns6 , undo_nrpt , undo_domains , undo_wins , _undo_type_max }

enum	async_op_t { peek , read , write }

Functions
static DWORD	AddListItem (list_item_t **pfirst, LPVOID data)

static LPVOID	RemoveListItem (list_item_t **pfirst, match_fn_t match, LPVOID ctx)

static HANDLE	CloseHandleEx (LPHANDLE handle)

static HANDLE	InitOverlapped (LPOVERLAPPED overlapped)

static BOOL	ResetOverlapped (LPOVERLAPPED overlapped)

static DWORD	AsyncPipeOp (async_op_t op, HANDLE pipe, LPVOID buffer, DWORD size, DWORD count, LPHANDLE events)

static DWORD	PeekNamedPipeAsync (HANDLE pipe, DWORD count, LPHANDLE events)

static DWORD	ReadPipeAsync (HANDLE pipe, LPVOID buffer, DWORD size, DWORD count, LPHANDLE events)

static DWORD	WritePipeAsync (HANDLE pipe, LPVOID data, DWORD size, DWORD count, LPHANDLE events)

static VOID	ReturnProcessId (HANDLE pipe, DWORD pid, DWORD count, LPHANDLE events)

static VOID	ReturnError (HANDLE pipe, DWORD error, LPCWSTR func, DWORD count, LPHANDLE events)

static VOID	ReturnLastError (HANDLE pipe, LPCWSTR func)

static BOOL	ValidateOptions (HANDLE pipe, const WCHAR workdir, const WCHAR options, WCHAR *errmsg, DWORD capacity)

static BOOL	GetStartupData (HANDLE pipe, STARTUP_DATA *sud)

static VOID	FreeStartupData (STARTUP_DATA *sud)

static SOCKADDR_INET	sockaddr_inet (short family, inet_address_t *addr)

static DWORD	InterfaceLuid (const char *iface_name, PNET_LUID luid)

static BOOL	CmpAddress (LPVOID item, LPVOID address)

static DWORD	DeleteAddress (PMIB_UNICASTIPADDRESS_ROW addr_row)

static DWORD	HandleAddressMessage (address_message_t msg, undo_lists_t lists)

static BOOL	CmpRoute (LPVOID item, LPVOID route)

static DWORD	DeleteRoute (PMIB_IPFORWARD_ROW2 fwd_row)

static DWORD	HandleRouteMessage (route_message_t msg, undo_lists_t lists)

static DWORD	HandleFlushNeighborsMessage (flush_neighbors_message_t *msg)

static void	BlockDNSErrHandler (DWORD err, const char *msg)

static BOOL	CmpAny (LPVOID item, LPVOID any)

static DWORD	DeleteWfpBlock (const wfp_block_message_t msg, undo_lists_t lists)

static DWORD	AddWfpBlock (const wfp_block_message_t msg, undo_lists_t lists)

static DWORD	HandleWfpBlockMessage (const wfp_block_message_t msg, undo_lists_t lists)

static DWORD	ExecCommand (const WCHAR argv0, const WCHAR cmdline, DWORD timeout)

static DWORD WINAPI	RegisterDNS (LPVOID unused)

static DWORD	HandleRegisterDNSMessage (void)

static DWORD	netsh_wins_cmd (const wchar_t action, const wchar_t if_name, const wchar_t *addr)
	Run the command: netsh interface ip $action wins $if_name [static] $addr.

static BOOL	CmpWString (LPVOID item, LPVOID str)

static BOOL	ApplyGpolSettings32 (void)
	Signal the DNS resolver (and others potentially) to reload the group policy (DNS) settings on 32 bit Windows systems.

static BOOL	ApplyGpolSettings64 (void)
	Signal the DNS resolver (and others potentially) to reload the group policy (DNS) settings on 64 bit Windows systems.

static BOOL	ApplyGpolSettings (void)
	Signal the DNS resolver (and others potentially) to reload the group policy (DNS) settings.

static BOOL	ApplyDnsSettings (BOOL apply_gpol)
	Signal the DNS resolver to reload its settings.

static DWORD	InterfaceIdString (PCSTR itf_name, PWSTR str, size_t len)
	Get the string interface UUID (with braces) for an interface alias name.

static BOOL	HasValidSearchList (HKEY key)
	Check for a valid search list in a certain key of the registry.

static BOOL	GetDnsSearchListKey (PCSTR itf_name, PBOOL gpol, PHKEY key)
	Find the registry key for storing the DNS domains for the VPN interface.

static BOOL	InitialSearchListExists (HKEY key)
	Check if a initial list had already been created.

static BOOL	StoreInitialDnsSearchList (HKEY key, PCWSTR list)
	Prepare DNS domain "SearchList" registry value, so additional VPN domains can be added and its original state can be restored in case the system cannot clean up regularly.

static BOOL	AddDnsSearchDomains (HKEY key, BOOL have_list, PCWSTR domains)
	Append domain suffixes to an existing search list.

static BOOL	ResetDnsSearchDomains (HKEY key)
	Reset the DNS search list to its original value.

static void	RemoveDnsSearchDomains (HKEY key, PCWSTR domains)
	Remove domain suffixes from an existing search list.

static void	UndoDnsSearchDomains (dns_domains_undo_data_t *undo_data)
	Removes DNS domains from a search list they were previously added to.

static DWORD	SetDnsSearchDomains (PCSTR itf_name, PCSTR domains, PBOOL gpol, undo_lists_t *lists)
	Add or remove DNS search domains.

static BOOL	GetInterfacesKey (short family, PHKEY key)
	Return the interfaces registry key for the specified address family.

static DWORD	SetNameServersValue (PCWSTR itf_id, short family, PCSTR value)
	Set the DNS name servers in a registry interface configuration.

static DWORD	SetNameServers (PCWSTR itf_id, short family, PCSTR addrs)
	Set the DNS name servers in a registry interface configuration.

static DWORD	ResetNameServers (PCWSTR itf_id, short family)
	Delete all DNS name servers from a registry interface configuration.

static DWORD	HandleDNSConfigMessage (const dns_cfg_message_t msg, undo_lists_t lists)

static BOOL	IsDhcpEnabled (HKEY key)
	Checks if DHCP is enabled for an interface.

static LSTATUS	SetNameServerAddresses (PWSTR itf_id, const nrpt_address_t *addresses)
	Set name servers from a NRPT address list.

static LSTATUS	GetItfDnsServersV4 (HKEY itf_key, PSTR addrs, PDWORD size)
	Get DNS server IPv4 addresses of an interface.

static LSTATUS	GetItfDnsServersV6 (HKEY itf_key, PSTR addrs, PDWORD size)
	Get DNS server IPv6 addresses of an interface.

static BOOL	ListContainsDomain (PCWSTR list, PCWSTR domain, size_t len)
	Check if a domain is contained in a comma separated list of domains.

static LSTATUS	GetItfDnsDomains (HKEY itf, PCWSTR search_domains, PWSTR domains, PDWORD size)
	Return interface specific domain suffix(es)

static BOOL	IsInterfaceConnected (PWSTR iid_str)
	Check if an interface is connected and up.

static void	GetNrptExcludeData (PCWSTR search_domains, nrpt_exclude_data_t *data, size_t data_size)
	Collect interface DNS settings to be used in excluding NRPT rules.

static DWORD	SetNrptRule (HKEY nrpt_key, PCWSTR subkey, PCSTR address, PCWSTR domains, DWORD dom_size, BOOL dnssec)
	Set a NRPT rule (subkey) and its values in the registry.

static void	SetNrptExcludeRules (HKEY nrpt_key, DWORD ovpn_pid, PCWSTR search_domains)
	Set NRPT exclude rules to accompany a catch all rule.

static DWORD	SetNrptRules (HKEY nrpt_key, const nrpt_address_t addresses, const char domains, const char *search_domains, BOOL dnssec, DWORD ovpn_pid)
	Set NRPT rules for a openvpn process.

static LSTATUS	OpenNrptBaseKey (PHKEY key, PBOOL gpol)
	Return the registry key where NRPT rules are stored.

static BOOL	DeleteNrptRules (DWORD pid, PBOOL gpol)
	Delete OpenVPN NRPT rules from the registry.

static void	UndoNrptRules (DWORD ovpn_pid)
	Delete a process' NRPT rules and apply the reduced set of rules.

static DWORD	HandleDNSConfigNrptMessage (const nrpt_dns_cfg_message_t msg, DWORD ovpn_pid, undo_lists_t lists)
	Add Name Resolution Policy Table (NRPT) rules as documented in https://msdn.microsoft.com/en-us/library/ff957356.aspx for DNS name resolution, as well as DNS search domain(s), if given.

static DWORD	HandleWINSConfigMessage (const wins_cfg_message_t msg, undo_lists_t lists)

static DWORD	HandleEnableDHCPMessage (const enable_dhcp_message_t *dhcp)

static DWORD	HandleMTUMessage (const set_mtu_message_t *mtu)

static DWORD	HandleCreateAdapterMessage (const create_adapter_message_t *msg)
	Creates a VPN adapter of the specified type by invoking tapctl.exe.

static VOID	HandleMessage (HANDLE pipe, PPROCESS_INFORMATION proc_info, DWORD bytes, DWORD count, LPHANDLE events, undo_lists_t *lists)

static VOID	Undo (undo_lists_t *lists)

static DWORD WINAPI	RunOpenvpn (LPVOID p)

static DWORD WINAPI	ServiceCtrlInteractive (DWORD ctrl_code, DWORD event, LPVOID data, LPVOID ctx)

static HANDLE	CreateClientPipeInstance (VOID)

static DWORD	UpdateWaitHandles (LPHANDLE handles_ptr, LPDWORD count, HANDLE io_event, HANDLE exit_event, list_item_t threads)

static VOID	FreeWaitHandles (LPHANDLE h)

static BOOL	CmpHandle (LPVOID item, LPVOID hnd)

VOID WINAPI	ServiceStartInteractiveOwn (DWORD dwArgc, LPWSTR *lpszArgv)

static void	CleanupRegistry (void)
	Clean up remains of previous sessions in registry.

VOID WINAPI	ServiceStartInteractive (DWORD dwArgc, LPWSTR *lpszArgv)

Variables
static SERVICE_STATUS_HANDLE	service

static SERVICE_STATUS	status = { .dwServiceType = SERVICE_WIN32_SHARE_PROCESS }

static HANDLE	exit_event = NULL

static settings_t	settings

static HANDLE	rdns_semaphore = NULL

openvpn_service_t	interactive_service

Macro Definition Documentation

◆ ERROR_MESSAGE_DATA

#define ERROR_MESSAGE_DATA 0x20000002

Definition at line 48 of file interactive.c.

◆ ERROR_MESSAGE_TYPE

#define ERROR_MESSAGE_TYPE 0x20000003

Definition at line 49 of file interactive.c.

◆ ERROR_OPENVPN_STARTUP

#define ERROR_OPENVPN_STARTUP 0x20000000

Definition at line 46 of file interactive.c.

◆ ERROR_STARTUP_DATA

#define ERROR_STARTUP_DATA 0x20000001

Definition at line 47 of file interactive.c.

◆ IO_TIMEOUT

#define IO_TIMEOUT 2000 /*ms*/

Definition at line 44 of file interactive.c.

◆ RDNS_TIMEOUT

#define RDNS_TIMEOUT 600 /* seconds to wait for the semaphore */

Definition at line 56 of file interactive.c.

◆ TUN_IOCTL_REGISTER_RINGS

#define TUN_IOCTL_REGISTER_RINGS CTL_CODE(51820U, 0x970U, METHOD_BUFFERED, FILE_READ_DATA | FILE_WRITE_DATA)

Definition at line 58 of file interactive.c.

Typedef Documentation

◆ list_item_t

typedef struct _list_item list_item_t

◆ match_fn_t

typedef BOOL(* match_fn_t) (LPVOID item, LPVOID ctx)

Definition at line 146 of file interactive.c.

◆ undo_lists_t

typedef list_item_t* undo_lists_t[_undo_type_max]

Definition at line 95 of file interactive.c.

Enumeration Type Documentation

◆ async_op_t

enum async_op_t

Enumerator
peek
read
write

Definition at line 205 of file interactive.c.

◆ undo_type_t

enum undo_type_t

Enumerator
address
route
wfp_block
undo_dns4
undo_dns6
undo_nrpt
undo_domains
undo_wins
_undo_type_max

Definition at line 84 of file interactive.c.

Function Documentation

◆ AddDnsSearchDomains()

static BOOL AddDnsSearchDomains	(	HKEY	key,
		BOOL	have_list,
		PCWSTR	domains
	)

static

Append domain suffixes to an existing search list.

Parameters

key	HKEY the list is stored at
have_list	BOOL to indicate if a search list already exists
domains	domain suffixes as comma separated string

Returns: BOOL to indicate success or failure

Definition at line 1458 of file interactive.c.

References M_SYSERR, MsgToEventLog(), pos(), and StoreInitialDnsSearchList().

Referenced by SetDnsSearchDomains().

◆ AddListItem()

static DWORD AddListItem	(	list_item_t **	pfirst,
		LPVOID	data
	)

static

Definition at line 131 of file interactive.c.

References _list_item::data, and _list_item::next.

Referenced by AddWfpBlock(), HandleAddressMessage(), HandleDNSConfigMessage(), HandleDNSConfigNrptMessage(), HandleRouteMessage(), HandleWINSConfigMessage(), ServiceStartInteractive(), and SetDnsSearchDomains().

◆ AddWfpBlock()

static DWORD AddWfpBlock	(	const wfp_block_message_t *	msg,
		undo_lists_t *	lists
	)

static

Definition at line 790 of file interactive.c.

References add_wfp_block_filters(), AddListItem(), BlockDNSErrHandler(), delete_wfp_block_filters(), DeleteWfpBlock(), wfp_block_data_t::engine, settings_t::exe_path, get_interface_metric(), wfp_block_data_t::index, wfp_block_data_t::metric_v4, wfp_block_data_t::metric_v6, msg, set_interface_metric(), settings, wfp_block, wfp_block_dns, and WFP_BLOCK_IFACE_METRIC.

Referenced by HandleWfpBlockMessage().

◆ ApplyDnsSettings()

static BOOL ApplyDnsSettings ( BOOL apply_gpol )

static

Signal the DNS resolver to reload its settings.

Parameters

apply_gpol BOOL reload setting from group policy hives as well

Returns: BOOL to indicate if the reload was initiated

Definition at line 1173 of file interactive.c.

References ApplyGpolSettings(), M_ERR, MsgToEventLog(), and status.

Referenced by CleanupRegistry(), HandleDNSConfigMessage(), HandleDNSConfigNrptMessage(), UndoDnsSearchDomains(), and UndoNrptRules().

◆ ApplyGpolSettings()

static BOOL ApplyGpolSettings ( void )

static

Signal the DNS resolver (and others potentially) to reload the group policy (DNS) settings.

Returns: BOOL to indicate if the reload was initiated

Definition at line 1157 of file interactive.c.

References ApplyGpolSettings32(), and ApplyGpolSettings64().

Referenced by ApplyDnsSettings().

◆ ApplyGpolSettings32()

static BOOL ApplyGpolSettings32 ( void )

static

Signal the DNS resolver (and others potentially) to reload the group policy (DNS) settings on 32 bit Windows systems.

Returns: BOOL to indicate if the reload was initiated

Definition at line 1080 of file interactive.c.

Referenced by ApplyGpolSettings().

◆ ApplyGpolSettings64()

static BOOL ApplyGpolSettings64 ( void )

static

Signal the DNS resolver (and others potentially) to reload the group policy (DNS) settings on 64 bit Windows systems.

Returns: BOOL to indicate if the reload was initiated

Definition at line 1120 of file interactive.c.

Referenced by ApplyGpolSettings().

◆ AsyncPipeOp()

static DWORD AsyncPipeOp	(	async_op_t	op,
		HANDLE	pipe,
		LPVOID	buffer,
		DWORD	size,
		DWORD	count,
		LPHANDLE	events
	)

static

Definition at line 212 of file interactive.c.

References CloseHandleEx(), InitOverlapped(), IO_TIMEOUT, peek, and write.

Referenced by PeekNamedPipeAsync(), ReadPipeAsync(), and WritePipeAsync().

◆ BlockDNSErrHandler()

static void BlockDNSErrHandler	(	DWORD	err,
		const char *	msg
	)

static

Definition at line 731 of file interactive.c.

References M_ERR, msg, and MsgToEventLog().

Referenced by AddWfpBlock().

◆ CleanupRegistry()

static void CleanupRegistry ( void )

static

Clean up remains of previous sessions in registry.

These remains can happen with unclean shutdowns or crashes and would interfere with normal operation of the system with and without active tunnels.

Definition at line 3729 of file interactive.c.

References ApplyDnsSettings(), DeleteNrptRules(), GetDnsSearchListKey(), and ResetDnsSearchDomains().

Referenced by ServiceStartInteractive().

◆ CloseHandleEx()

static HANDLE CloseHandleEx ( LPHANDLE handle )

static

Definition at line 173 of file interactive.c.

Referenced by AsyncPipeOp(), RunOpenvpn(), and ServiceStartInteractive().

◆ CmpAddress()

static BOOL CmpAddress	(	LPVOID	item,
		LPVOID	address
	)

static

Definition at line 558 of file interactive.c.

References address.

Referenced by HandleAddressMessage().

◆ CmpAny()

static BOOL CmpAny	(	LPVOID	item,
		LPVOID	any
	)

static

Definition at line 755 of file interactive.c.

Referenced by DeleteWfpBlock(), HandleDNSConfigMessage(), HandleDNSConfigNrptMessage(), and SetDnsSearchDomains().

◆ CmpHandle()

static BOOL CmpHandle	(	LPVOID	item,
		LPVOID	hnd
	)

static

Definition at line 3710 of file interactive.c.

Referenced by ServiceStartInteractive().

◆ CmpRoute()

static BOOL CmpRoute	(	LPVOID	item,
		LPVOID	route
	)

static

Definition at line 636 of file interactive.c.

References route.

Referenced by HandleRouteMessage().

◆ CmpWString()

static BOOL CmpWString	(	LPVOID	item,
		LPVOID	str
	)

static

Definition at line 1068 of file interactive.c.

Referenced by HandleWINSConfigMessage().

◆ CreateClientPipeInstance()

static HANDLE CreateClientPipeInstance ( VOID )

static

Definition at line 3603 of file interactive.c.

References _L, M_SYSERR, MsgToEventLog(), PACKAGE, and service_instance.

Referenced by ServiceStartInteractive().

◆ DeleteAddress()

static DWORD DeleteAddress ( PMIB_UNICASTIPADDRESS_ROW addr_row )

static

Definition at line 564 of file interactive.c.

Referenced by HandleAddressMessage(), and Undo().

◆ DeleteNrptRules()

static BOOL DeleteNrptRules	(	DWORD	pid,
		PBOOL	gpol
	)

static

Delete OpenVPN NRPT rules from the registry.

If the pid parameter is 0 all NRPT rules added by OpenVPN are deleted. In all other cases only rules matching the pid are deleted.

Parameters

pid	PID of the process to delete the rules for or 0
gpol

Returns: BOOL to indicate if rules were deleted

Definition at line 2687 of file interactive.c.

References M_SYSERR, MsgToEventLog(), and OpenNrptBaseKey().

Referenced by CleanupRegistry(), HandleDNSConfigNrptMessage(), and UndoNrptRules().

◆ DeleteRoute()

static DWORD DeleteRoute ( PMIB_IPFORWARD_ROW2 fwd_row )

static

Definition at line 642 of file interactive.c.

Referenced by HandleRouteMessage(), and Undo().

◆ DeleteWfpBlock()

static DWORD DeleteWfpBlock	(	const wfp_block_message_t *	msg,
		undo_lists_t *	lists
	)

static

Definition at line 761 of file interactive.c.

References CmpAny(), delete_wfp_block_filters(), wfp_block_data_t::engine, M_ERR, wfp_block_data_t::metric_v4, wfp_block_data_t::metric_v6, msg, MsgToEventLog(), RemoveListItem(), set_interface_metric(), and wfp_block.

Referenced by AddWfpBlock(), and HandleWfpBlockMessage().

◆ ExecCommand()

static DWORD ExecCommand	(	const WCHAR *	argv0,
		const WCHAR *	cmdline,
		DWORD	timeout
	)

static

Definition at line 879 of file interactive.c.

References M_ERR, M_INFO, M_SYSERR, and MsgToEventLog().

Referenced by HandleCreateAdapterMessage(), HandleEnableDHCPMessage(), netsh_wins_cmd(), and RegisterDNS().

◆ FreeStartupData()

static VOID FreeStartupData ( STARTUP_DATA * sud )

static

Definition at line 516 of file interactive.c.

References STARTUP_DATA::directory.

Referenced by RunOpenvpn().

◆ FreeWaitHandles()

static VOID FreeWaitHandles ( LPHANDLE h )

static

Definition at line 3704 of file interactive.c.

Referenced by ServiceStartInteractive().

◆ GetDnsSearchListKey()

static BOOL GetDnsSearchListKey	(	PCSTR	itf_name,
		PBOOL	gpol,
		PHKEY	key
	)

static

Find the registry key for storing the DNS domains for the VPN interface.

Parameters

itf_name	PCSTR that contains the alias name of the interface the domains are related to. If this is NULL the interface probing is skipped.
gpol	PBOOL to indicate if the key returned is the group policy hive
key	PHKEY in which the found registry key is returned in

Returns: BOOL to indicate if a search list is already present at the location. If the key returned is INVALID_HANDLE_VALUE, this indicates an unrecoverable error.

The correct location to add them is where a non-empty "SearchList" value exists, or in the interface configuration itself. However, the system-wide and then the group policy search lists overrule the previous one respectively, so we need to probe to find the effective list.

Definition at line 1325 of file interactive.c.

References HasValidSearchList(), and InterfaceIdString().

Referenced by CleanupRegistry(), SetDnsSearchDomains(), and UndoDnsSearchDomains().

◆ GetInterfacesKey()

static BOOL GetInterfacesKey	(	short	family,
		PHKEY	key
	)

static

Return the interfaces registry key for the specified address family.

Parameters

family	the internet address family to open the key for
key	PHKEY to return the key in

Returns: BOOL to indicate success or failure

Definition at line 1733 of file interactive.c.

References M_SYSERR, and MsgToEventLog().

Referenced by GetNrptExcludeData(), and SetNameServersValue().

◆ GetItfDnsDomains()

static LSTATUS GetItfDnsDomains	(	HKEY	itf,
		PCWSTR	search_domains,
		PWSTR	domains,
		PDWORD	size
	)

static

Return interface specific domain suffix(es)

The domains paramter will be set to a MULTI_SZ domains string. In case of an error or if no domains are found for the interface size is set to 0 and the contents of domains are invalid. Note that the domains could have been set by DHCP or manually. Note that domains are ignored if they match a pushed search domain.

Parameters

itf	HKEY of the interface to read from
search_domains	optional list of search domains
domains	PWSTR buffer to return the domain(s) in
size	pointer to size of the domains buffer in bytes. Will be set to the size of the string returned, including the terminating zeros or 0.

Returns: LSTATUS NO_ERROR if the domain suffix(es) were read successfully, ERROR_FILE_NOT_FOUND if no domain was found for the interface, ERROR_MORE_DATA if the list did not fit into the buffer, any other error indicates an error while reading from the registry.

Definition at line 2182 of file interactive.c.

References buf_len(), ListContainsDomain(), and pos().

Referenced by GetNrptExcludeData().

◆ GetItfDnsServersV4()

static LSTATUS GetItfDnsServersV4	(	HKEY	itf_key,
		PSTR	addrs,
		PDWORD	size
	)

static

Get DNS server IPv4 addresses of an interface.

Parameters

itf_key	registry key of the IPv4 interface data
addrs	pointer to the buffer addresses are returned in
size	pointer to the size of the buffer, contains the size of the addresses on return

Returns: LSTATUS NO_ERROR on success, a Windows error code otherwise

Definition at line 2021 of file interactive.c.

References IsDhcpEnabled().

Referenced by GetNrptExcludeData().

◆ GetItfDnsServersV6()

static LSTATUS GetItfDnsServersV6	(	HKEY	itf_key,
		PSTR	addrs,
		PDWORD	size
	)

static

Get DNS server IPv6 addresses of an interface.

Parameters

itf_key	registry key of the IPv6 interface data
addrs	pointer to the buffer addresses are returned in
size	pointer to the size of the buffer

Returns: LSTATUS NO_ERROR on success, a Windows error code otherwise

Definition at line 2066 of file interactive.c.

References IsDhcpEnabled(), and pos().

Referenced by GetNrptExcludeData().

◆ GetNrptExcludeData()

static void GetNrptExcludeData	(	PCWSTR	search_domains,
		nrpt_exclude_data_t *	data,
		size_t	data_size
	)

static

Collect interface DNS settings to be used in excluding NRPT rules.

This is needed so that local DNS keeps working even when a catch all NRPT rule is installed by a VPN connection.

Parameters

search_domains	optional list of search domains
data	pointer to the data structures the values are returned in
data_size	number of exclude data structures pointed to

Definition at line 2325 of file interactive.c.

References nrpt_exclude_data_t::addresses, nrpt_exclude_data_t::domains, nrpt_exclude_data_t::domains_size, GetInterfacesKey(), GetItfDnsDomains(), GetItfDnsServersV4(), GetItfDnsServersV6(), IsInterfaceConnected(), M_SYSERR, MsgToEventLog(), and NRPT_ADDR_SIZE.

Referenced by SetNrptExcludeRules().

◆ GetStartupData()

static BOOL GetStartupData	(	HANDLE	pipe,
		STARTUP_DATA *	sud
	)

static

Definition at line 440 of file interactive.c.

References STARTUP_DATA::directory, ERROR_STARTUP_DATA, exit_event, M_ERR, M_SYSERR, MsgToEventLog(), STARTUP_DATA::options, PeekNamedPipeAsync(), read, ReadPipeAsync(), ReturnError(), ReturnLastError(), and STARTUP_DATA::std_input.

Referenced by RunOpenvpn().

◆ HandleAddressMessage()

static DWORD HandleAddressMessage	(	address_message_t *	msg,
		undo_lists_t *	lists
	)

static

Definition at line 570 of file interactive.c.

References AddListItem(), address, CmpAddress(), DeleteAddress(), InterfaceLuid(), msg, msg_add_address, RemoveListItem(), and sockaddr_inet().

Referenced by HandleMessage().

◆ HandleCreateAdapterMessage()

static DWORD HandleCreateAdapterMessage ( const create_adapter_message_t * msg )

static

Creates a VPN adapter of the specified type by invoking tapctl.exe.

Parameters

msg	Adapter creation request specifying the type.

Returns: NO_ERROR on success, otherwise a Windows error code.

Definition at line 3042 of file interactive.c.

References ADAPTER_TYPE_DCO, ADAPTER_TYPE_TAP, settings_t::bin_dir, ExecCommand(), msg, and settings.

Referenced by HandleMessage().

◆ HandleDNSConfigMessage()

static DWORD HandleDNSConfigMessage	(	const dns_cfg_message_t *	msg,
		undo_lists_t *	lists
	)

static

Definition at line 1828 of file interactive.c.

References AddListItem(), ApplyDnsSettings(), CmpAny(), dns_cfg_message_t::domains, ERROR_MESSAGE_DATA, dns_cfg_message_t::iface, InterfaceIdString(), msg, msg_del_dns_cfg, interface_t::name, RemoveListItem(), ResetNameServers(), SetDnsSearchDomains(), SetNameServers(), undo_dns4, and undo_dns6.

Referenced by HandleMessage().

◆ HandleDNSConfigNrptMessage()

static DWORD HandleDNSConfigNrptMessage	(	const nrpt_dns_cfg_message_t *	msg,
		DWORD	ovpn_pid,
		undo_lists_t *	lists
	)

static

Add Name Resolution Policy Table (NRPT) rules as documented in https://msdn.microsoft.com/en-us/library/ff957356.aspx for DNS name resolution, as well as DNS search domain(s), if given.

Parameters

msg	config messages sent by the openvpn process
ovpn_pid	process id of the sending openvpn process
lists	undo lists for this process

Returns: NO_ERROR on success, or a Windows error code

Definition at line 2767 of file interactive.c.

References AddListItem(), nrpt_dns_cfg_message_t::addresses, ApplyDnsSettings(), CmpAny(), DeleteNrptRules(), ERROR_MESSAGE_DATA, nrpt_dns_cfg_message_t::iface, InterfaceIdString(), M_INFO, msg, msg_add_nrpt_cfg, msg_del_nrpt_cfg, MsgToEventLog(), interface_t::name, NRPT_ADDR_NUM, nrpt_dnssec, OpenNrptBaseKey(), RemoveListItem(), ResetNameServers(), nrpt_dns_cfg_message_t::resolve_domains, nrpt_dns_cfg_message_t::search_domains, SetDnsSearchDomains(), SetNameServerAddresses(), SetNrptRules(), and undo_nrpt.

Referenced by HandleMessage().

◆ HandleEnableDHCPMessage()

static DWORD HandleEnableDHCPMessage ( const enable_dhcp_message_t * dhcp )

static

Definition at line 2974 of file interactive.c.

References ExecCommand(), and get_win_sys_path().

Referenced by HandleMessage().

◆ HandleFlushNeighborsMessage()

static DWORD HandleFlushNeighborsMessage ( flush_neighbors_message_t * msg )

static

Definition at line 720 of file interactive.c.

References msg.

Referenced by HandleMessage().

◆ HandleMessage()

static VOID HandleMessage	(	HANDLE	pipe,
		PPROCESS_INFORMATION	proc_info,
		DWORD	bytes,
		DWORD	count,
		LPHANDLE	events,
		undo_lists_t *	lists
	)

static

Definition at line 3077 of file interactive.c.

References ERROR_MESSAGE_DATA, ERROR_MESSAGE_TYPE, ack_message_t::error_number, HandleAddressMessage(), HandleCreateAdapterMessage(), HandleDNSConfigMessage(), HandleDNSConfigNrptMessage(), HandleEnableDHCPMessage(), HandleFlushNeighborsMessage(), HandleMTUMessage(), HandleRegisterDNSMessage(), HandleRouteMessage(), HandleWfpBlockMessage(), HandleWINSConfigMessage(), ack_message_t::header, message_header_t::message_id, msg, msg_acknowledgement, msg_add_address, msg_add_dns_cfg, msg_add_nrpt_cfg, msg_add_route, msg_add_wfp_block, msg_add_wins_cfg, msg_create_adapter, msg_del_address, msg_del_dns_cfg, msg_del_nrpt_cfg, msg_del_route, msg_del_wfp_block, msg_del_wins_cfg, msg_enable_dhcp, MSG_FLAGS_ERROR, msg_flush_neighbors, msg_register_dns, msg_set_mtu, MsgToEventLog(), read, ReadPipeAsync(), message_header_t::type, and WritePipeAsync().

Referenced by RunOpenvpn().

◆ HandleMTUMessage()

static DWORD HandleMTUMessage ( const set_mtu_message_t * mtu )

static

Definition at line 3012 of file interactive.c.

References set_mtu_message_t::family, set_mtu_message_t::iface, interface_t::index, and set_mtu_message_t::mtu.

Referenced by HandleMessage().

◆ HandleRegisterDNSMessage()

static DWORD HandleRegisterDNSMessage ( void )

static

Definition at line 985 of file interactive.c.

References RegisterDNS().

Referenced by HandleMessage().

◆ HandleRouteMessage()

static DWORD HandleRouteMessage	(	route_message_t *	msg,
		undo_lists_t *	lists
	)

static

Definition at line 648 of file interactive.c.

References AddListItem(), CmpRoute(), DeleteRoute(), InterfaceLuid(), msg, msg_add_route, RemoveListItem(), route, and sockaddr_inet().

Referenced by HandleMessage().

◆ HandleWfpBlockMessage()

static DWORD HandleWfpBlockMessage	(	const wfp_block_message_t *	msg,
		undo_lists_t *	lists
	)

static

Definition at line 861 of file interactive.c.

References AddWfpBlock(), DeleteWfpBlock(), msg, and msg_add_wfp_block.

Referenced by HandleMessage().

◆ HandleWINSConfigMessage()

static DWORD HandleWINSConfigMessage	(	const wins_cfg_message_t *	msg,
		undo_lists_t *	lists
	)

static

Definition at line 2894 of file interactive.c.

References AddListItem(), CmpWString(), ERROR_MESSAGE_DATA, wins_cfg_message_t::iface, msg, msg_del_wins_cfg, interface_t::name, netsh_wins_cmd(), RemoveListItem(), undo_wins, and utf8to16().

Referenced by HandleMessage().

◆ HasValidSearchList()

static BOOL HasValidSearchList ( HKEY key )

static

Check for a valid search list in a certain key of the registry.

Valid means that a string value "SearchList" exists and that it contains one or more domains. We only check if the string contains a valid domain name character, but the main point is to prevent letting pass whitespace-only lists, so that check is good enough for that purpose.

Parameters

key	HKEY in which to check for a valid search list

Returns: BOOL to indicate if a valid search list has been found

Definition at line 1288 of file interactive.c.

Referenced by GetDnsSearchListKey().

◆ InitialSearchListExists()

static BOOL InitialSearchListExists ( HKEY key )

static

Check if a initial list had already been created.

Parameters

key	HKEY of the registry subkey to search in

Returns: BOOL to indicate if the initial list is already present under key

Definition at line 1393 of file interactive.c.

References M_ERR, and MsgToEventLog().

Referenced by StoreInitialDnsSearchList().

◆ InitOverlapped()

static HANDLE InitOverlapped ( LPOVERLAPPED overlapped )

static

Definition at line 184 of file interactive.c.

Referenced by AsyncPipeOp(), and ServiceStartInteractive().

◆ InterfaceIdString()

static DWORD InterfaceIdString	(	PCSTR	itf_name,
		PWSTR	str,
		size_t	len
	)

static

Get the string interface UUID (with braces) for an interface alias name.

Parameters

itf_name	the interface alias name
str	pointer to the buffer the wide UUID is returned in
len	size of the str buffer in characters

Returns: NO_ERROR on success, or the Windows error code for the failure

Definition at line 1232 of file interactive.c.

References InterfaceLuid(), M_ERR, and MsgToEventLog().

Referenced by GetDnsSearchListKey(), HandleDNSConfigMessage(), and HandleDNSConfigNrptMessage().

◆ InterfaceLuid()

static DWORD InterfaceLuid	(	const char *	iface_name,
		PNET_LUID	luid
	)

static

Definition at line 540 of file interactive.c.

References status, and utf8to16().

Referenced by HandleAddressMessage(), HandleRouteMessage(), and InterfaceIdString().

◆ IsDhcpEnabled()

static BOOL IsDhcpEnabled ( HKEY key )

static

Checks if DHCP is enabled for an interface.

Parameters

key	HKEY of the interface to check for

Returns: BOOL set to TRUE if DHCP is enabled, or FALSE if disabled or an error occurred

Definition at line 1943 of file interactive.c.

References M_SYSERR, and MsgToEventLog().

Referenced by GetItfDnsServersV4(), and GetItfDnsServersV6().

◆ IsInterfaceConnected()

static BOOL IsInterfaceConnected ( PWSTR iid_str )

static

Check if an interface is connected and up.

Parameters

iid_str the interface GUID as string

Returns: TRUE if the interface is connected and up, FALSE otherwise or in case an error happened

Definition at line 2279 of file interactive.c.

References M_SYSERR, and MsgToEventLog().

Referenced by GetNrptExcludeData().

◆ ListContainsDomain()

static BOOL ListContainsDomain	(	PCWSTR	list,
		PCWSTR	domain,
		size_t	len
	)

static

Check if a domain is contained in a comma separated list of domains.

Parameters

list	Comma separated list of domains
domain	Domain string to search for
len	Length of the domain string, excluding the '\0'

Returns: TRUE when the domain was found in the list, FALSE otherwise.

Definition at line 2138 of file interactive.c.

Referenced by GetItfDnsDomains().

◆ netsh_wins_cmd()

static DWORD netsh_wins_cmd	(	const wchar_t *	action,
		const wchar_t *	if_name,
		const wchar_t *	addr
	)

static

Run the command: netsh interface ip $action wins $if_name [static] $addr.

Parameters

action	"delete", "add" or "set"
if_name	"name_of_interface"
addr	IPv4 address as a string

If addr is null and action = "delete" all addresses are deleted. if action = "set" then "static" is added before $addr

Definition at line 1020 of file interactive.c.

References ExecCommand(), and get_win_sys_path().

Referenced by HandleWINSConfigMessage(), and Undo().

◆ OpenNrptBaseKey()

static LSTATUS OpenNrptBaseKey	(	PHKEY	key,
		PBOOL	gpol
	)

static

Return the registry key where NRPT rules are stored.

Parameters

key	pointer to the HKEY it is returned in
gpol	pointer to BOOL the use of GPOL hive is returned in

Returns: NO_ERROR on success, or a Windows error code

Definition at line 2648 of file interactive.c.

Referenced by DeleteNrptRules(), and HandleDNSConfigNrptMessage().

◆ PeekNamedPipeAsync()

static DWORD PeekNamedPipeAsync	(	HANDLE	pipe,
		DWORD	count,
		LPHANDLE	events
	)

static

Definition at line 276 of file interactive.c.

References AsyncPipeOp(), and peek.

Referenced by GetStartupData(), and RunOpenvpn().

◆ ReadPipeAsync()

static DWORD ReadPipeAsync	(	HANDLE	pipe,
		LPVOID	buffer,
		DWORD	size,
		DWORD	count,
		LPHANDLE	events
	)

static

Definition at line 282 of file interactive.c.

References AsyncPipeOp(), and read.

Referenced by GetStartupData(), and HandleMessage().

◆ RegisterDNS()

static DWORD WINAPI RegisterDNS ( LPVOID unused )

static

Definition at line 940 of file interactive.c.

References ExecCommand(), exit_event, get_win_sys_path(), M_ERR, M_SYSERR, MsgToEventLog(), rdns_semaphore, and RDNS_TIMEOUT.

Referenced by HandleRegisterDNSMessage().

◆ RemoveDnsSearchDomains()

static void RemoveDnsSearchDomains	(	HKEY	key,
		PCWSTR	domains
	)

static

Remove domain suffixes from an existing search list.

Parameters

key	HKEY the list is stored at
domains	domain suffixes to remove as comma separated string

Definition at line 1563 of file interactive.c.

References M_ERR, M_SYSERR, MsgToEventLog(), and ResetDnsSearchDomains().

Referenced by SetDnsSearchDomains(), and UndoDnsSearchDomains().

◆ RemoveListItem()

static LPVOID RemoveListItem	(	list_item_t **	pfirst,
		match_fn_t	match,
		LPVOID	ctx
	)

static

Definition at line 149 of file interactive.c.

References _list_item::data, and _list_item::next.

Referenced by DeleteWfpBlock(), HandleAddressMessage(), HandleDNSConfigMessage(), HandleDNSConfigNrptMessage(), HandleRouteMessage(), HandleWINSConfigMessage(), ServiceStartInteractive(), and SetDnsSearchDomains().

◆ ResetDnsSearchDomains()

static BOOL ResetDnsSearchDomains ( HKEY key )

static

Reset the DNS search list to its original value.

Looks for a "InitialSearchList" value as the one to reset to. If it doesn't exist, doesn't reset anything, as there was no SearchList in the first place.

Parameters

key	HKEY of the location in the registry to reset

Returns: BOOL to indicate if something was reset

Definition at line 1522 of file interactive.c.

References M_SYSERR, and MsgToEventLog().

Referenced by CleanupRegistry(), and RemoveDnsSearchDomains().

◆ ResetNameServers()

static DWORD ResetNameServers	(	PCWSTR	itf_id,
		short	family
	)

static

Delete all DNS name servers from a registry interface configuration.

Parameters

itf_id	the interface id to clear the servers for
family	internet address family to clear the servers for

Returns: DWORD NO_ERROR on success, a Windows error code otherwise

Definition at line 1822 of file interactive.c.

References SetNameServersValue().

Referenced by HandleDNSConfigMessage(), HandleDNSConfigNrptMessage(), and Undo().

◆ ResetOverlapped()

static BOOL ResetOverlapped ( LPOVERLAPPED overlapped )

static

Definition at line 192 of file interactive.c.

Referenced by ServiceStartInteractive().

◆ ReturnError()

static VOID ReturnError	(	HANDLE	pipe,
		DWORD	error,
		LPCWSTR	func,
		DWORD	count,
		LPHANDLE	events
	)

static

Definition at line 309 of file interactive.c.

References ERROR_OPENVPN_STARTUP, MSG_FLAGS_ERROR, MsgToEventLog(), and WritePipeAsync().

Referenced by GetStartupData(), ReturnLastError(), RunOpenvpn(), and ServiceStartInteractive().

◆ ReturnLastError()

static VOID ReturnLastError	(	HANDLE	pipe,
		LPCWSTR	func
	)

static

Definition at line 348 of file interactive.c.

References exit_event, and ReturnError().

Referenced by GetStartupData(), and RunOpenvpn().

◆ ReturnProcessId()

static VOID ReturnProcessId	(	HANDLE	pipe,
		DWORD	pid,
		DWORD	count,
		LPHANDLE	events
	)

static

Definition at line 294 of file interactive.c.

References msg, and WritePipeAsync().

Referenced by RunOpenvpn().

◆ RunOpenvpn()

static DWORD WINAPI RunOpenvpn ( LPVOID p )

static

◆ ServiceCtrlInteractive()

static DWORD WINAPI ServiceCtrlInteractive	(	DWORD	ctrl_code,
		DWORD	event,
		LPVOID	data,
		LPVOID	ctx
	)

static

Definition at line 3579 of file interactive.c.

References exit_event, ReportStatusToSCMgr(), service, and status.

Referenced by ServiceStartInteractive().

◆ ServiceStartInteractive()

VOID WINAPI ServiceStartInteractive	(	DWORD	dwArgc,
		LPWSTR *	lpszArgv
	)

Definition at line 3757 of file interactive.c.

References AddListItem(), CleanupRegistry(), CloseHandleEx(), CmpHandle(), CreateClientPipeInstance(), exit_event, FreeWaitHandles(), GetOpenvpnSettings(), InitOverlapped(), interactive_service, M_SYSERR, MsgToEventLog(), openvpn_service_t::name, rdns_semaphore, RemoveListItem(), ReportStatusToSCMgr(), ResetOverlapped(), ReturnError(), RunOpenvpn(), service, ServiceCtrlInteractive(), settings, status, and UpdateWaitHandles().

Referenced by ServiceStartInteractiveOwn(), and wmain().

◆ ServiceStartInteractiveOwn()

VOID WINAPI ServiceStartInteractiveOwn	(	DWORD	dwArgc,
		LPWSTR *	lpszArgv
	)

Definition at line 3717 of file interactive.c.

References ServiceStartInteractive(), and status.

Referenced by wmain().

◆ SetDnsSearchDomains()

static DWORD SetDnsSearchDomains	(	PCSTR	itf_name,
		PCSTR	domains,
		PBOOL	gpol,
		undo_lists_t *	lists
	)

static

Add or remove DNS search domains.

Parameters

itf_name	alias name of the interface the domains are set for
domains	a comma separated list of domain name suffixes
gpol	PBOOL to indicate if group policy values were modified
lists	pointer to the undo lists

Returns: NO_ERROR on success, an error status code otherwise

If a SearchList is present in the registry already, the domains are added to that list. Otherwise the domains are added to the VPN interface specific list. A group policy search list takes precedence over a system-wide list, and that one itself takes precedence over interface specific ones.

This function will remove previously set domains if the domains parameter is NULL or empty.

The gpol value is only valid if the function returns no error. In the error case nothing is changed.

Definition at line 1666 of file interactive.c.

References AddDnsSearchDomains(), AddListItem(), CmpAny(), dns_domains_undo_data_t::domains, GetDnsSearchListKey(), dns_domains_undo_data_t::itf_name, M_SYSERR, MsgToEventLog(), RemoveDnsSearchDomains(), RemoveListItem(), undo_domains, and utf8to16().

Referenced by HandleDNSConfigMessage(), and HandleDNSConfigNrptMessage().

◆ SetNameServerAddresses()

static LSTATUS SetNameServerAddresses	(	PWSTR	itf_id,
		const nrpt_address_t *	addresses
	)

static

Set name servers from a NRPT address list.

Parameters

itf_id	the VPN interface ID to set the name servers for
addresses	the list of NRPT addresses

Returns: LSTATUS NO_ERROR in case of success, a Windows error code otherwise

Definition at line 1968 of file interactive.c.

References NRPT_ADDR_NUM, NRPT_ADDR_SIZE, and SetNameServers().

Referenced by HandleDNSConfigNrptMessage().

◆ SetNameServers()

static DWORD SetNameServers	(	PCWSTR	itf_id,
		short	family,
		PCSTR	addrs
	)

static

Set the DNS name servers in a registry interface configuration.

Parameters

itf_id	the interface id to set the servers for
family	internet address family to set the servers for
addrs	comma separated list of name server addresses

Returns: DWORD NO_ERROR on success, a Windows error code otherwise

Definition at line 1808 of file interactive.c.

References SetNameServersValue().

Referenced by HandleDNSConfigMessage(), and SetNameServerAddresses().

◆ SetNameServersValue()

static DWORD SetNameServersValue	(	PCWSTR	itf_id,
		short	family,
		PCSTR	value
	)

static

Set the DNS name servers in a registry interface configuration.

Parameters

itf_id	the interface id to set the servers for
family	internet address family to set the servers for
value	the value to set the name servers to

Returns: DWORD NO_ERROR on success, a Windows error code otherwise

Definition at line 1760 of file interactive.c.

References GetInterfacesKey(), M_SYSERR, and MsgToEventLog().

Referenced by ResetNameServers(), and SetNameServers().

◆ SetNrptExcludeRules()

static void SetNrptExcludeRules	(	HKEY	nrpt_key,
		DWORD	ovpn_pid,
		PCWSTR	search_domains
	)

static

Set NRPT exclude rules to accompany a catch all rule.

This is done so that local resolution of names is not interfered with in case the VPN resolves all names.

Parameters

nrpt_key	the registry key to set the rules under
ovpn_pid	the PID of the openvpn process
search_domains	optional list of search domains

Definition at line 2532 of file interactive.c.

References nrpt_exclude_data_t::addresses, nrpt_exclude_data_t::domains, nrpt_exclude_data_t::domains_size, GetNrptExcludeData(), M_ERR, MsgToEventLog(), and SetNrptRule().

Referenced by SetNrptRules().

◆ SetNrptRule()

static DWORD SetNrptRule	(	HKEY	nrpt_key,
		PCWSTR	subkey,
		PCSTR	address,
		PCWSTR	domains,
		DWORD	dom_size,
		BOOL	dnssec
	)

static

Set a NRPT rule (subkey) and its values in the registry.

Parameters

nrpt_key	NRPT registry key handle
subkey	subkey string to create
address	name server address string
domains	domains to resolve by this server as MULTI_SZ
dom_size	size of domains in bytes including the terminators
dnssec	boolean to determine if DNSSEC is to be enabled

Returns: NO_ERROR on success, or Windows error code

Definition at line 2445 of file interactive.c.

References address.

Referenced by SetNrptExcludeRules(), and SetNrptRules().

◆ SetNrptRules()

static DWORD SetNrptRules	(	HKEY	nrpt_key,
		const nrpt_address_t *	addresses,
		const char *	domains,
		const char *	search_domains,
		BOOL	dnssec,
		DWORD	ovpn_pid
	)

static

Set NRPT rules for a openvpn process.

Parameters

nrpt_key	the registry key to set the rules under
addresses	name server addresses
domains	optional list of split routing domains
search_domains	optional list of search domains
dnssec	boolean whether DNSSEC is to be used
ovpn_pid	the PID of the openvpn process

Returns: NO_ERROR on success, or a Windows error code

Definition at line 2571 of file interactive.c.

References M_ERR, MsgToEventLog(), NRPT_ADDR_NUM, NRPT_ADDR_SIZE, pos(), SetNrptExcludeRules(), SetNrptRule(), utf8to16(), and utf8to16_size().

Referenced by HandleDNSConfigNrptMessage().

◆ sockaddr_inet()

static SOCKADDR_INET sockaddr_inet	(	short	family,
		inet_address_t *	addr
	)

static

Definition at line 523 of file interactive.c.

References inet_address_t::ipv4, and inet_address_t::ipv6.

Referenced by HandleAddressMessage(), and HandleRouteMessage().

◆ StoreInitialDnsSearchList()

static BOOL StoreInitialDnsSearchList	(	HKEY	key,
		PCWSTR	list
	)

static

Prepare DNS domain "SearchList" registry value, so additional VPN domains can be added and its original state can be restored in case the system cannot clean up regularly.

Parameters

key	registry subkey to store the list in
list	string of comma separated domains to use as the list

Returns: boolean to indicate whether the list was stored successfully

Definition at line 1422 of file interactive.c.

References InitialSearchListExists(), M_ERR, and MsgToEventLog().

Referenced by AddDnsSearchDomains().

◆ Undo()

static VOID Undo ( undo_lists_t * lists )

static

Definition at line 3186 of file interactive.c.

References _undo_type_max, address, _list_item::data, delete_wfp_block_filters(), DeleteAddress(), DeleteRoute(), wfp_block_data_t::engine, wfp_block_data_t::index, wfp_block_data_t::metric_v4, wfp_block_data_t::metric_v6, netsh_wins_cmd(), _list_item::next, ResetNameServers(), route, set_interface_metric(), undo_dns4, undo_dns6, undo_domains, undo_nrpt, undo_wins, UndoDnsSearchDomains(), UndoNrptRules(), and wfp_block.

Referenced by RunOpenvpn().

◆ UndoDnsSearchDomains()

static void UndoDnsSearchDomains ( dns_domains_undo_data_t * undo_data )

static

Removes DNS domains from a search list they were previously added to.

Parameters

undo_data pointer to dns_domains_undo_data_t

Definition at line 1628 of file interactive.c.

References ApplyDnsSettings(), dns_domains_undo_data_t::domains, GetDnsSearchListKey(), dns_domains_undo_data_t::itf_name, and RemoveDnsSearchDomains().

Referenced by Undo().

◆ UndoNrptRules()

static void UndoNrptRules ( DWORD ovpn_pid )

static

Delete a process' NRPT rules and apply the reduced set of rules.

Parameters

ovpn_pid OpenVPN process id to delete rules for

Definition at line 2746 of file interactive.c.

References ApplyDnsSettings(), and DeleteNrptRules().

Referenced by Undo().

◆ UpdateWaitHandles()

static DWORD UpdateWaitHandles	(	LPHANDLE *	handles_ptr,
		LPDWORD	count,
		HANDLE	io_event,
		HANDLE	exit_event,
		list_item_t *	threads
	)

static

Definition at line 3654 of file interactive.c.

References _list_item::data, exit_event, _list_item::next, and pos().

Referenced by ServiceStartInteractive().

◆ ValidateOptions()

static BOOL ValidateOptions	(	HANDLE	pipe,
		const WCHAR *	workdir,
		const WCHAR *	options,
		WCHAR *	errmsg,
		DWORD	capacity
	)

static

Definition at line 359 of file interactive.c.

References CheckOption(), IsOption(), settings_t::ovpn_admin_group, and settings.

Referenced by RunOpenvpn().

◆ WritePipeAsync()

static DWORD WritePipeAsync	(	HANDLE	pipe,
		LPVOID	data,
		DWORD	size,
		DWORD	count,
		LPHANDLE	events
	)

static

Definition at line 288 of file interactive.c.

References AsyncPipeOp(), and write.

Referenced by HandleMessage(), ReturnError(), and ReturnProcessId().

Variable Documentation

◆ exit_event

HANDLE exit_event = NULL

static

Definition at line 53 of file interactive.c.

Referenced by GetStartupData(), RegisterDNS(), ReturnLastError(), RunOpenvpn(), ServiceCtrlInteractive(), ServiceStartInteractive(), and UpdateWaitHandles().

◆ interactive_service

openvpn_service_t interactive_service

Initial value:

= {
    interactive,
    _L(PACKAGE_NAME) L"ServiceInteractive",
    _L(PACKAGE_NAME) L" Interactive Service",
    SERVICE_DEPENDENCIES,
    SERVICE_AUTO_START
}

Definition at line 60 of file interactive.c.

Referenced by ServiceStartInteractive(), and wmain().

◆ rdns_semaphore

HANDLE rdns_semaphore = NULL

static

Definition at line 55 of file interactive.c.

Referenced by RegisterDNS(), and ServiceStartInteractive().

◆ service

SERVICE_STATUS_HANDLE service

static

Definition at line 51 of file interactive.c.

Referenced by CmdInstallServices(), CmdRemoveServices(), CmdStartService(), do_deferred_pam_auth(), pam_auth(), pam_server(), port_from_servname(), ReportStatusToSCMgr(), ServiceCtrlInteractive(), and ServiceStartInteractive().

◆ settings

settings_t settings

static

Definition at line 54 of file interactive.c.

Referenced by AddWfpBlock(), HandleCreateAdapterMessage(), RunOpenvpn(), ServiceStartInteractive(), and ValidateOptions().

◆ status

SERVICE_STATUS status = { .dwServiceType = SERVICE_WIN32_SHARE_PROCESS }

static

Definition at line 52 of file interactive.c.

Referenced by add_route(), add_route_ipapi(), add_route_ipv6(), ApplyDnsSettings(), bio_write_post(), check_for_client_reason(), check_status(), close_tun(), CmdRemoveServices(), dco_get_supported_ciphers(), del_route_ipapi(), delete_route(), delete_temp_addresses(), dhcp_release_by_adapter_index(), dhcp_renew_by_adapter_index(), do_open_tun(), do_preresolve(), do_preresolve_host(), do_route_ipv6_service(), establish_http_proxy_passthru(), exec_command(), fork_to_self(), get_adapter_info_list(), get_best_route(), get_console_input_win32(), get_default_gateway(), get_default_gateway_ipv6(), get_device_instance_id_interface(), get_interface_info_list(), get_openvpn_reg_value(), get_pa_var(), get_panel_reg(), get_per_adapter_info(), get_special_addr(), get_tap_reg(), get_windows_routing_table(), getaddr(), GetOpenvpnSettings(), GetRegString(), helper_client_server(), in_extra_dispatch(), in_src_get(), incoming_push_message(), init_route(), InterfaceLuid(), io_wait_dowork(), link_socket_write_win32(), man_block(), man_client_deny(), man_client_kill(), man_connect(), man_kill(), man_proxy(), man_remote(), man_send_cc_message(), man_settings_init(), man_standalone_event_loop(), management_callback_remote_entry_get(), management_callback_send_cc_message(), management_io(), multi_get_create_instance_udp(), multi_io_wait(), multi_process_io_udp(), net_event_win32_reset_write(), openvpn_connect(), openvpn_exit(), openvpn_getaddrinfo(), openvpn_gettimeofday(), openvpn_plugin_func_v1(), openvpn_plugin_open_v3(), openvpn_popen(), openvpn_waitpid_check(), pam_auth(), plugin_call_item(), plugin_call_ssl(), print_sockaddr_ex(), process_io(), read_incoming_link(), read_incoming_tls_ciphertext(), read_incoming_tls_plaintext(), recv_line(), recv_socks_reply(), report_command_status(), ReportStatusToSCMgr(), resolve_bind_local(), resolve_remote(), semaphore_lock(), send_push_options(), send_push_reply(), ServiceCtrlInteractive(), ServiceStartInteractive(), ServiceStartInteractiveOwn(), set_win_sys_path_via_env(), socket_connect(), socket_connection_reset(), socket_listen_accept(), socket_recv_queue(), socket_send_queue(), sockethandle_finalize(), socks_handshake(), socks_username_password_auth(), strerror_win32(), tap_allow_nonadmin_access_handle(), test_adapter_ip_netmask(), tls_pre_decrypt_lite(), tls_process_state(), tun_read_queue(), tun_write_queue(), tun_write_win32(), tunnel_server_loop(), tuntap_abort(), tuntap_is_dco_win_timeout(), tuntap_set_connected(), tuntap_set_ip_addr(), tuntap_set_ptp(), tuntap_stop(), we_wait(), win32_sleep(), win_get_exe_path(), win_wfp_block(), write_outgoing_tls_ciphertext(), and x_check_status().

Data Structures

Macros

Typedefs

Enumerations

Functions

Variables

Macro Definition Documentation

◆ ERROR_MESSAGE_DATA

◆ ERROR_MESSAGE_TYPE

◆ ERROR_OPENVPN_STARTUP

◆ ERROR_STARTUP_DATA

◆ IO_TIMEOUT

◆ RDNS_TIMEOUT

◆ TUN_IOCTL_REGISTER_RINGS

Typedef Documentation

◆ list_item_t

◆ match_fn_t

◆ undo_lists_t

Enumeration Type Documentation

◆ async_op_t

◆ undo_type_t

Function Documentation

◆ AddDnsSearchDomains()

◆ AddListItem()

◆ AddWfpBlock()

◆ ApplyDnsSettings()

◆ ApplyGpolSettings()

◆ ApplyGpolSettings32()

◆ ApplyGpolSettings64()

◆ AsyncPipeOp()

◆ BlockDNSErrHandler()

◆ CleanupRegistry()

◆ CloseHandleEx()

◆ CmpAddress()

◆ CmpAny()

◆ CmpHandle()

◆ CmpRoute()

◆ CmpWString()

◆ CreateClientPipeInstance()

◆ DeleteAddress()

◆ DeleteNrptRules()

◆ DeleteRoute()

◆ DeleteWfpBlock()

◆ ExecCommand()

◆ FreeStartupData()

◆ FreeWaitHandles()

◆ GetDnsSearchListKey()

◆ GetInterfacesKey()

◆ GetItfDnsDomains()

◆ GetItfDnsServersV4()

◆ GetItfDnsServersV6()

◆ GetNrptExcludeData()

◆ GetStartupData()

◆ HandleAddressMessage()

◆ HandleCreateAdapterMessage()

◆ HandleDNSConfigMessage()

◆ HandleDNSConfigNrptMessage()

◆ HandleEnableDHCPMessage()

◆ HandleFlushNeighborsMessage()

◆ HandleMessage()

◆ HandleMTUMessage()

◆ HandleRegisterDNSMessage()

◆ HandleRouteMessage()

◆ HandleWfpBlockMessage()

◆ HandleWINSConfigMessage()

◆ HasValidSearchList()

◆ InitialSearchListExists()

◆ InitOverlapped()

◆ InterfaceIdString()

◆ InterfaceLuid()

◆ IsDhcpEnabled()

◆ IsInterfaceConnected()

◆ ListContainsDomain()

◆ netsh_wins_cmd()

◆ OpenNrptBaseKey()

◆ PeekNamedPipeAsync()

◆ ReadPipeAsync()

◆ RegisterDNS()

◆ RemoveDnsSearchDomains()

◆ RemoveListItem()