#include "buffer.h"
#include "common.h"
#include "error.h"
#include "proto.h"
#include "mtu.h"
#include "win32.h"
#include "event.h"
#include "proxy.h"
#include "socks.h"
#include "misc.h"
#include "tun.h"

Include dependency graph for socket.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Data Structures
struct	openvpn_sockaddr

struct	cached_dns_entry

struct	link_socket_actual

struct	link_socket_addr

struct	link_socket_info

struct	stream_buf

struct	socket_buffer_size

struct	link_socket

struct	sockethandle_t

Macros
#define	OPENVPN_PORT "1194"

#define	RESOLV_RETRY_INFINITE 1000000000

#define	htonps(x) htons(x)

#define	ntohps(x) ntohs(x)

#define	LS_MODE_DEFAULT 0

#define	LS_MODE_TCP_LISTEN 1

#define	LS_MODE_TCP_ACCEPT_FROM 2

#define	SF_USE_IP_PKTINFO (1<<0)

#define	SF_TCP_NODELAY (1<<1)

#define	SF_PORT_SHARE (1<<2)

#define	SF_HOST_RANDOMIZE (1<<3)

#define	SF_GETADDRINFO_DGRAM (1<<4)

#define	SF_DCO_WIN (1<<5)

#define	SF_PREPEND_SA (1<<6)

#define	MSG_NOSIGNAL 0

#define	openvpn_close_socket(s) closesocket(s)

#define	PS_SHOW_PORT_IF_DEFINED (1<<0)

#define	PS_SHOW_PORT (1<<1)

#define	PS_SHOW_PKTINFO (1<<2)

#define	PS_DONT_SHOW_ADDR (1<<3)

#define	PS_DONT_SHOW_FAMILY (1<<4)

#define	IA_EMPTY_IF_UNDEF (1<<0)

#define	IA_NET_ORDER (1<<1)

#define	SA_IP_PORT (1<<0)

#define	SA_SET_IF_NONZERO (1<<1)

#define	IPV4_INVALID_ADDR 0xffffffff

#define	OIA_HOSTNAME 0

#define	OIA_IP 1

#define	OIA_ERROR -1

#define	GETADDR_RESOLVE (1<<0)

#define	GETADDR_FATAL (1<<1)

#define	GETADDR_HOST_ORDER (1<<2)

#define	GETADDR_MENTION_RESOLVE_RETRY (1<<3)

#define	GETADDR_FATAL_ON_SIGNAL (1<<4)

#define	GETADDR_WARN_ON_SIGNAL (1<<5)

#define	GETADDR_MSG_VIRT_OUT (1<<6)

#define	GETADDR_TRY_ONCE (1<<7)

#define	GETADDR_UPDATE_MANAGEMENT_STATE (1<<8)

#define	GETADDR_RANDOMIZE (1<<9)

#define	GETADDR_PASSIVE (1<<10)

#define	GETADDR_DATAGRAM (1<<11)

#define	GETADDR_CACHE_MASK (GETADDR_DATAGRAM\|GETADDR_PASSIVE)

Typedefs
typedef uint16_t	packet_size_type

Enumerations
enum	proto_num { PROTO_NONE , PROTO_UDP , PROTO_TCP , PROTO_TCP_SERVER , PROTO_TCP_CLIENT , PROTO_N }

Functions
void	socket_set_buffers (socket_descriptor_t fd, const struct socket_buffer_size *sbs, bool reduce_size)
	Sets the receive and send buffer sizes of a socket descriptor.

int	socket_recv_queue (struct link_socket *sock, int maxsize)

int	socket_send_queue (struct link_socket sock, struct buffer buf, const struct link_socket_actual *to)

int	sockethandle_finalize (sockethandle_t sh, struct overlapped_io io, struct buffer buf, struct link_socket_actual *from)

static BOOL	SocketHandleGetOverlappedResult (sockethandle_t sh, struct overlapped_io *io)

static int	SocketHandleGetLastError (sockethandle_t sh)

static void	SocketHandleSetLastError (sockethandle_t sh, DWORD err)

static void	SocketHandleSetInvalError (sockethandle_t sh)

struct link_socket *	link_socket_new (void)

void	socket_bind (socket_descriptor_t sd, struct addrinfo local, int af_family, const char prefix, bool ipv6only)

int	openvpn_connect (socket_descriptor_t sd, const struct sockaddr remote, int connect_timeout, volatile int signal_received)

void	link_socket_init_phase1 (struct context *c, int sock_index, int mode)

void	link_socket_init_phase2 (struct context c, struct link_socket sock)

void	do_preresolve (struct context *c)

void	link_socket_close (struct link_socket *sock)

void	sd_close (socket_descriptor_t *sd)

const char *	print_sockaddr_ex (const struct sockaddr addr, const char separator, const unsigned int flags, struct gc_arena *gc)

static const char *	print_openvpn_sockaddr (const struct openvpn_sockaddr addr, struct gc_arena gc)

static const char *	print_sockaddr (const struct sockaddr addr, struct gc_arena gc)

const char *	print_link_socket_actual_ex (const struct link_socket_actual act, const char separator, const unsigned int flags, struct gc_arena *gc)

const char *	print_link_socket_actual (const struct link_socket_actual act, struct gc_arena gc)

const char *	print_in_addr_t (in_addr_t addr, unsigned int flags, struct gc_arena *gc)

const char *	print_in6_addr (struct in6_addr addr6, unsigned int flags, struct gc_arena *gc)

const char *	print_in_port_t (in_port_t port, struct gc_arena *gc)

struct in6_addr	add_in6_addr (struct in6_addr base, uint32_t add)

void	setenv_sockaddr (struct env_set es, const char name_prefix, const struct openvpn_sockaddr *addr, const unsigned int flags)

void	setenv_in_addr_t (struct env_set es, const char name_prefix, in_addr_t addr, const unsigned int flags)

void	setenv_in6_addr (struct env_set es, const char name_prefix, const struct in6_addr *addr, const unsigned int flags)

void	setenv_link_socket_actual (struct env_set es, const char name_prefix, const struct link_socket_actual *act, const unsigned int flags)

void	bad_address_length (int actual, int expected)

in_addr_t	link_socket_current_remote (const struct link_socket_info *info)

const struct in6_addr *	link_socket_current_remote_ipv6 (const struct link_socket_info *info)

void	link_socket_connection_initiated (struct link_socket_info info, const struct link_socket_actual addr, const char common_name, struct env_set es)

void	link_socket_bad_incoming_addr (struct buffer buf, const struct link_socket_info info, const struct link_socket_actual *from_addr)

void	set_actual_address (struct link_socket_actual actual, struct addrinfo ai)

void	link_socket_bad_outgoing_addr (void)

void	setenv_trusted (struct env_set es, const struct link_socket_info info)

bool	link_socket_update_flags (struct link_socket *sock, unsigned int sockflags)

void	link_socket_update_buffer_sizes (struct link_socket *sock, int rcvbuf, int sndbuf)

int	openvpn_inet_aton (const char dotted_quad, struct in_addr addr)

bool	ip_addr_dotted_quad_safe (const char *dotted_quad)

bool	ip_or_dns_addr_safe (const char *addr, const bool allow_fqdn)

bool	mac_addr_safe (const char *mac_addr)

bool	ipv6_addr_safe (const char *ipv6_text_addr)

socket_descriptor_t	create_socket_tcp (struct addrinfo *)

socket_descriptor_t	socket_do_accept (socket_descriptor_t sd, struct link_socket_actual *act, const bool nowait)

in_addr_t	getaddr (unsigned int flags, const char hostname, int resolve_retry_seconds, bool succeeded, struct signal_info *sig_info)
	Translate an IPv4 addr or hostname from string form to in_addr_t.

bool	get_ipv6_addr (const char hostname, struct in6_addr network, unsigned int *netbits, int msglevel)
	Translate an IPv6 addr or hostname from string form to in6_addr.

int	openvpn_getaddrinfo (unsigned int flags, const char hostname, const char servname, int resolve_retry_seconds, struct signal_info sig_info, int ai_family, struct addrinfo *res)

static bool	proto_is_net (int proto)

static bool	proto_is_udp (int proto)
	Returns if the protocol being used is UDP.

static bool	proto_is_dgram (int proto)
	Return if the protocol is datagram (UDP)

static bool	proto_is_tcp (int proto)
	returns if the proto is a TCP variant (tcp-server, tcp-client or tcp)

int	ascii2proto (const char *proto_name)

sa_family_t	ascii2af (const char *proto_name)

const char *	proto2ascii (int proto, sa_family_t af, bool display_form)

const char *	proto2ascii_all (struct gc_arena *gc)

const char *	proto_remote (int proto, bool remote)

const char *	addr_family_name (int af)

static int	datagram_overhead (sa_family_t af, int proto)

static bool	link_socket_proto_connection_oriented (int proto)

static bool	link_socket_connection_oriented (const struct link_socket *sock)

static bool	addr_defined (const struct openvpn_sockaddr *addr)

static bool	addr_local (const struct sockaddr *addr)

static bool	addr_defined_ipi (const struct link_socket_actual *lsa)

static bool	link_socket_actual_defined (const struct link_socket_actual *act)

static bool	addr_match (const struct openvpn_sockaddr a1, const struct openvpn_sockaddr a2)

static bool	addrlist_match (const struct openvpn_sockaddr a1, const struct addrinfo addrlist)

static bool	addrlist_port_match (const struct openvpn_sockaddr a1, const struct addrinfo a2)

static bool	addr_port_match (const struct openvpn_sockaddr a1, const struct openvpn_sockaddr a2)

static bool	addr_match_proto (const struct openvpn_sockaddr a1, const struct openvpn_sockaddr a2, const int proto)

static bool	addrlist_match_proto (const struct openvpn_sockaddr a1, struct addrinfo addr_list, const int proto)

static void	addr_zero_host (struct openvpn_sockaddr *addr)

static int	af_addr_size (sa_family_t af)

static bool	link_socket_actual_match (const struct link_socket_actual a1, const struct link_socket_actual a2)

static bool	socket_connection_reset (const struct link_socket *sock, int status)

static bool	link_socket_verify_incoming_addr (struct buffer buf, const struct link_socket_info info, const struct link_socket_actual *from_addr)

static void	link_socket_get_outgoing_addr (struct buffer buf, const struct link_socket_info info, struct link_socket_actual **act)

static void	link_socket_set_outgoing_addr (struct link_socket_info info, const struct link_socket_actual act, const char common_name, struct env_set es)

bool	stream_buf_read_setup_dowork (struct link_socket *sock)

static bool	stream_buf_read_setup (struct link_socket *sock)

static bool	socket_is_dco_win (const struct link_socket *s)
	Returns true if we are on Windows and this link is running on DCO-WIN.

int	link_socket_read_tcp (struct link_socket sock, struct buffer buf)

static int	link_socket_read_udp_win32 (struct link_socket sock, struct buffer buf, struct link_socket_actual *from)

static int	link_socket_read (struct link_socket sock, struct buffer buf, struct link_socket_actual *from)

ssize_t	link_socket_write_tcp (struct link_socket sock, struct buffer buf, struct link_socket_actual *to)

static int	link_socket_write_win32 (struct link_socket sock, struct buffer buf, struct link_socket_actual *to)

static ssize_t	link_socket_write_udp (struct link_socket sock, struct buffer buf, struct link_socket_actual *to)

static ssize_t	link_socket_write (struct link_socket sock, struct buffer buf, struct link_socket_actual *to)

bool	sockets_read_residual (const struct context *c)

static event_t	socket_event_handle (const struct link_socket *sock)

event_t	socket_listen_event_handle (struct link_socket *sock)

unsigned int	socket_set (struct link_socket sock, struct event_set es, unsigned int rwflags, void arg, unsigned int persistent)

static void	socket_set_listen_persistent (struct link_socket sock, struct event_set es, void *arg)

static void	socket_reset_listen_persistent (struct link_socket *sock)

const char *	socket_stat (const struct link_socket sock, unsigned int rwflags, struct gc_arena gc)

Macro Definition Documentation

◆ GETADDR_CACHE_MASK

#define GETADDR_CACHE_MASK (GETADDR_DATAGRAM|GETADDR_PASSIVE)

Definition at line 530 of file socket.h.

◆ GETADDR_DATAGRAM

#define GETADDR_DATAGRAM (1<<11)

Definition at line 528 of file socket.h.

◆ GETADDR_FATAL

#define GETADDR_FATAL (1<<1)

Definition at line 518 of file socket.h.

◆ GETADDR_FATAL_ON_SIGNAL

#define GETADDR_FATAL_ON_SIGNAL (1<<4)

Definition at line 521 of file socket.h.

◆ GETADDR_HOST_ORDER

#define GETADDR_HOST_ORDER (1<<2)

Definition at line 519 of file socket.h.

◆ GETADDR_MENTION_RESOLVE_RETRY

#define GETADDR_MENTION_RESOLVE_RETRY (1<<3)

Definition at line 520 of file socket.h.

◆ GETADDR_MSG_VIRT_OUT

#define GETADDR_MSG_VIRT_OUT (1<<6)

Definition at line 523 of file socket.h.

◆ GETADDR_PASSIVE

#define GETADDR_PASSIVE (1<<10)

Definition at line 527 of file socket.h.

◆ GETADDR_RANDOMIZE

#define GETADDR_RANDOMIZE (1<<9)

Definition at line 526 of file socket.h.

◆ GETADDR_RESOLVE

#define GETADDR_RESOLVE (1<<0)

Definition at line 517 of file socket.h.

◆ GETADDR_TRY_ONCE

#define GETADDR_TRY_ONCE (1<<7)

Definition at line 524 of file socket.h.

◆ GETADDR_UPDATE_MANAGEMENT_STATE

#define GETADDR_UPDATE_MANAGEMENT_STATE (1<<8)

Definition at line 525 of file socket.h.

◆ GETADDR_WARN_ON_SIGNAL

#define GETADDR_WARN_ON_SIGNAL (1<<5)

Definition at line 522 of file socket.h.

◆ htonps

#define htonps ( x ) htons(x)

Definition at line 59 of file socket.h.

◆ IA_EMPTY_IF_UNDEF

#define IA_EMPTY_IF_UNDEF (1<<0)

Definition at line 401 of file socket.h.

◆ IA_NET_ORDER

#define IA_NET_ORDER (1<<1)

Definition at line 402 of file socket.h.

◆ IPV4_INVALID_ADDR

#define IPV4_INVALID_ADDR 0xffffffff

Definition at line 438 of file socket.h.

◆ LS_MODE_DEFAULT

#define LS_MODE_DEFAULT 0

Definition at line 209 of file socket.h.

◆ LS_MODE_TCP_ACCEPT_FROM

#define LS_MODE_TCP_ACCEPT_FROM 2

Definition at line 211 of file socket.h.

◆ LS_MODE_TCP_LISTEN

#define LS_MODE_TCP_LISTEN 1

Definition at line 210 of file socket.h.

◆ MSG_NOSIGNAL

#define MSG_NOSIGNAL 0

Definition at line 272 of file socket.h.

◆ ntohps

#define ntohps ( x ) ntohs(x)

Definition at line 62 of file socket.h.

◆ OIA_ERROR

#define OIA_ERROR -1

Definition at line 471 of file socket.h.

◆ OIA_HOSTNAME

#define OIA_HOSTNAME 0

Definition at line 469 of file socket.h.

◆ OIA_IP

#define OIA_IP 1

Definition at line 470 of file socket.h.

◆ openvpn_close_socket

#define openvpn_close_socket ( s ) closesocket(s)

Definition at line 277 of file socket.h.

◆ OPENVPN_PORT

#define OPENVPN_PORT "1194"

Definition at line 42 of file socket.h.

◆ PS_DONT_SHOW_ADDR

#define PS_DONT_SHOW_ADDR (1<<3)

Definition at line 366 of file socket.h.

◆ PS_DONT_SHOW_FAMILY

#define PS_DONT_SHOW_FAMILY (1<<4)

Definition at line 367 of file socket.h.

◆ PS_SHOW_PKTINFO

#define PS_SHOW_PKTINFO (1<<2)

Definition at line 365 of file socket.h.

◆ PS_SHOW_PORT

#define PS_SHOW_PORT (1<<1)

Definition at line 364 of file socket.h.

◆ PS_SHOW_PORT_IF_DEFINED

#define PS_SHOW_PORT_IF_DEFINED (1<<0)

Definition at line 363 of file socket.h.

◆ RESOLV_RETRY_INFINITE

#define RESOLV_RETRY_INFINITE 1000000000

Definition at line 48 of file socket.h.

◆ SA_IP_PORT

#define SA_IP_PORT (1<<0)

Definition at line 411 of file socket.h.

◆ SA_SET_IF_NONZERO

#define SA_SET_IF_NONZERO (1<<1)

Definition at line 412 of file socket.h.

◆ SF_DCO_WIN

#define SF_DCO_WIN (1<<5)

Definition at line 226 of file socket.h.

◆ SF_GETADDRINFO_DGRAM

#define SF_GETADDRINFO_DGRAM (1<<4)

Definition at line 225 of file socket.h.

◆ SF_HOST_RANDOMIZE

#define SF_HOST_RANDOMIZE (1<<3)

Definition at line 224 of file socket.h.

◆ SF_PORT_SHARE

#define SF_PORT_SHARE (1<<2)

Definition at line 223 of file socket.h.

◆ SF_PREPEND_SA

#define SF_PREPEND_SA (1<<6)

Definition at line 227 of file socket.h.

◆ SF_TCP_NODELAY

#define SF_TCP_NODELAY (1<<1)

Definition at line 222 of file socket.h.

◆ SF_USE_IP_PKTINFO

#define SF_USE_IP_PKTINFO (1<<0)

Definition at line 221 of file socket.h.

Typedef Documentation

◆ packet_size_type

typedef uint16_t packet_size_type

Definition at line 56 of file socket.h.

Enumeration Type Documentation

◆ proto_num

enum proto_num

Enumerator
PROTO_NONE
PROTO_UDP
PROTO_TCP
PROTO_TCP_SERVER
PROTO_TCP_CLIENT
PROTO_N

Definition at line 566 of file socket.h.

Function Documentation

◆ add_in6_addr()

struct in6_addr add_in6_addr	(	struct in6_addr	base,
		uint32_t	add
	)

Definition at line 3054 of file socket.c.

Referenced by helper_client_server(), ifconfig_pool_acquire(), and ifconfig_pool_handle_to_ipv6_base().

◆ addr_defined()

static bool addr_defined ( const struct openvpn_sockaddr * addr )

inlinestatic

Definition at line 661 of file socket.h.

References openvpn_sockaddr::addr, openvpn_sockaddr::in4, openvpn_sockaddr::in6, and openvpn_sockaddr::sa.

Referenced by initialization_sequence_completed(), link_socket_actual_defined(), and log_entry_print().

◆ addr_defined_ipi()

static bool addr_defined_ipi ( const struct link_socket_actual * lsa )

inlinestatic

Definition at line 699 of file socket.h.

References openvpn_sockaddr::addr, ASSERT, link_socket_actual::dest, and openvpn_sockaddr::sa.

Referenced by print_link_socket_actual_ex().

◆ addr_family_name()

const char * addr_family_name ( int af )

Definition at line 3262 of file socket.c.

References buffer::len.

Referenced by dco_mp_start_vpn(), dco_p2p_new_peer(), link_socket_init_phase2(), and socket_bind().

◆ addr_local()

static bool addr_local ( const struct sockaddr * addr )

inlinestatic

Definition at line 678 of file socket.h.

◆ addr_match()

static bool addr_match	(	const struct openvpn_sockaddr *	a1,
		const struct openvpn_sockaddr *	a2
	)

inlinestatic

Definition at line 732 of file socket.h.

References openvpn_sockaddr::addr, ASSERT, openvpn_sockaddr::in4, openvpn_sockaddr::in6, IN6_ARE_ADDR_EQUAL, and openvpn_sockaddr::sa.

Referenced by addr_match_proto().

◆ addr_match_proto()

static bool addr_match_proto	(	const struct openvpn_sockaddr *	a1,
		const struct openvpn_sockaddr *	a2,
		const int	proto
	)

inlinestatic

Definition at line 828 of file socket.h.

References addr_match(), addr_port_match(), and link_socket_proto_connection_oriented().

Referenced by link_socket_set_outgoing_addr().

◆ addr_port_match()

static bool addr_port_match	(	const struct openvpn_sockaddr *	a1,
		const struct openvpn_sockaddr *	a2
	)

inlinestatic

Definition at line 811 of file socket.h.

References openvpn_sockaddr::addr, ASSERT, openvpn_sockaddr::in4, openvpn_sockaddr::in6, IN6_ARE_ADDR_EQUAL, and openvpn_sockaddr::sa.

Referenced by addr_match_proto(), and link_socket_actual_match().

◆ addr_zero_host()

static void addr_zero_host ( struct openvpn_sockaddr * addr )

inlinestatic

Definition at line 849 of file socket.h.

References openvpn_sockaddr::addr, openvpn_sockaddr::in4, openvpn_sockaddr::in6, and openvpn_sockaddr::sa.

Referenced by phase2_socks_client().

◆ addrlist_match()

static bool addrlist_match	(	const struct openvpn_sockaddr *	a1,
		const struct addrinfo *	addrlist
	)

inlinestatic

Definition at line 747 of file socket.h.

References openvpn_sockaddr::addr, ASSERT, openvpn_sockaddr::in4, openvpn_sockaddr::in6, IN6_ARE_ADDR_EQUAL, and openvpn_sockaddr::sa.

Referenced by addrlist_match_proto(), and socket_listen_accept().

◆ addrlist_match_proto()

static bool addrlist_match_proto	(	const struct openvpn_sockaddr *	a1,
		struct addrinfo *	addr_list,
		const int	proto
	)

inlinestatic

Definition at line 839 of file socket.h.

References addrlist_match(), addrlist_port_match(), and link_socket_proto_connection_oriented().

Referenced by link_socket_set_outgoing_addr(), and link_socket_verify_incoming_addr().

◆ addrlist_port_match()

static bool addrlist_port_match	(	const struct openvpn_sockaddr *	a1,
		const struct addrinfo *	a2
	)

inlinestatic

Definition at line 776 of file socket.h.

References openvpn_sockaddr::addr, ASSERT, openvpn_sockaddr::in4, openvpn_sockaddr::in6, IN6_ARE_ADDR_EQUAL, and openvpn_sockaddr::sa.

Referenced by addrlist_match_proto().

◆ af_addr_size()

static int af_addr_size ( sa_family_t af )

inlinestatic

Definition at line 864 of file socket.h.

References ASSERT, M_ERR, and msg.

Referenced by openvpn_connect(), read_sockaddr_from_overlapped(), socket_do_accept(), and socket_recv_queue().

◆ ascii2af()

sa_family_t ascii2af ( const char * proto_name )

Definition at line 3212 of file socket.c.

References proto_names::proto_af, proto_names::short_form, and SIZE.

Referenced by add_option().

◆ ascii2proto()

int ascii2proto ( const char * proto_name )

Definition at line 3199 of file socket.c.

References proto_names::proto, proto_names::short_form, and SIZE.

Referenced by add_option().

◆ bad_address_length()

void bad_address_length	(	int	actual,
		int	expected
	)

Definition at line 3314 of file socket.c.

References buffer::len, M_FATAL, and msg.

Referenced by read_sockaddr_from_overlapped(), and socket_recv_queue().

◆ create_socket_tcp()

socket_descriptor_t create_socket_tcp ( struct addrinfo * addrinfo )

Definition at line 1053 of file socket.c.

References ASSERT, M_ERR, msg, and set_cloexec().

Referenced by create_socket(), man_connect(), man_listen(), and phase2_tcp_client().

◆ datagram_overhead()

static int datagram_overhead	(	sa_family_t	af,
		int	proto
	)

inlinestatic

Definition at line 629 of file socket.h.

References PROTO_UDP.

Referenced by calc_control_channel_frame_overhead(), frame_adjust_path_mtu(), get_ip_encap_overhead(), and process_outgoing_link().

◆ do_preresolve()

void do_preresolve ( struct context * c )

Definition at line 343 of file socket.c.

References connection_entry::af, local_list::array, connection_list::array, connection_entry::bind_local, do_preresolve_host(), connection_entry::flags, GETADDR_DATAGRAM, GETADDR_FATAL, GETADDR_MENTION_RESOLVE_RETRY, GETADDR_PASSIVE, GETADDR_RANDOMIZE, GETADDR_RESOLVE, GETADDR_UPDATE_MANAGEMENT_STATE, connection_entry::http_proxy_options, options::ip_remote_hint, local_list::len, connection_list::len, local_entry::local, connection_entry::local_list, context::options, local_entry::port, http_proxy_options::port, connection_entry::proto, proto_is_dgram(), connection_entry::remote, connection_entry::remote_port, http_proxy_options::server, SF_HOST_RANDOMIZE, options::sockflags, connection_entry::socks_proxy_port, connection_entry::socks_proxy_server, status, and throw_signal_soft().

Referenced by init_instance().

◆ get_ipv6_addr()

bool get_ipv6_addr	(	const char *	hostname,
		struct in6_addr *	network,
		unsigned int *	netbits,
		int	msglevel
	)

Translate an IPv6 addr or hostname from string form to in6_addr.

Definition at line 226 of file socket.c.

References get_addr_generic(), and GETADDR_RESOLVE.

Referenced by add_option(), dhcp_option_dns6_parse(), ifconfig_pool_read(), init_route_ipv6(), ipv6_addr_safe_hexplusbits(), option_iroute_ipv6(), and remove_iroutes_from_push_route_list().

◆ getaddr()

in_addr_t getaddr	(	unsigned int	flags,
		const char *	hostname,
		int	resolve_retry_seconds,
		bool *	succeeded,
		struct signal_info *	sig_info
	)

Translate an IPv4 addr or hostname from string form to in_addr_t.

In case of resolve error, it will try again for resolve_retry_seconds seconds.

Definition at line 195 of file socket.c.

References get_addr_generic(), M_WARN, and status.

Referenced by add_client_nat_to_option_list(), add_host_route_array(), add_option(), get_adapter_ip_netmask(), get_ip_addr(), ifconfig_pool_read(), init_route(), init_route_list(), init_tun(), ip_addr_string_to_array(), man_kill(), option_iroute(), and remove_iroutes_from_push_route_list().

◆ ip_addr_dotted_quad_safe()

bool ip_addr_dotted_quad_safe ( const char * dotted_quad )

Definition at line 737 of file socket.c.

References OIA_IP, and openvpn_inet_aton().

Referenced by add_option(), dhcp_option_address_parse(), and ip_or_dns_addr_safe().

◆ ip_or_dns_addr_safe()

bool ip_or_dns_addr_safe	(	const char *	addr,
		const bool	allow_fqdn
	)

Definition at line 823 of file socket.c.

References dns_addr_safe(), and ip_addr_dotted_quad_safe().

Referenced by add_option().

◆ ipv6_addr_safe()

bool ipv6_addr_safe ( const char * ipv6_text_addr )

Definition at line 787 of file socket.c.

Referenced by add_option().

◆ link_socket_actual_defined()

static bool link_socket_actual_defined ( const struct link_socket_actual * act )

inlinestatic

Definition at line 726 of file socket.h.

References addr_defined(), and link_socket_actual::dest.

Referenced by check_ping_restart(), link_socket_current_remote(), link_socket_current_remote_ipv6(), link_socket_get_outgoing_addr(), link_socket_verify_incoming_addr(), process_outgoing_link(), resolve_remote(), tls_multi_process(), tls_update_remote_addr(), and write_control_auth().

◆ link_socket_actual_match()

static bool link_socket_actual_match	(	const struct link_socket_actual *	a1,
		const struct link_socket_actual *	a2
	)

inlinestatic

Definition at line 883 of file socket.h.

References addr_port_match(), and link_socket_actual::dest.

Referenced by handle_data_channel_packet(), multi_get_create_instance_udp(), tls_pre_decrypt(), and tls_update_remote_addr().

◆ link_socket_bad_incoming_addr()

void link_socket_bad_incoming_addr	(	struct buffer *	buf,
		const struct link_socket_info *	info,
		const struct link_socket_actual *	from_addr
	)

Definition at line 2525 of file socket.c.

References openvpn_sockaddr::addr, D_LINK_ERRORS, link_socket_actual::dest, gc, gc_free(), gc_new(), buffer::len, link_socket_info::lsa, msg, print_link_socket_actual(), print_sockaddr_ex(), PS_SHOW_PORT, link_socket_addr::remote_list, and openvpn_sockaddr::sa.

Referenced by process_incoming_link_part1().

◆ link_socket_bad_outgoing_addr()

void link_socket_bad_outgoing_addr ( void )

Definition at line 2554 of file socket.c.

References D_READ_WRITE, and dmsg.

Referenced by link_socket_get_outgoing_addr().

◆ link_socket_close()

void link_socket_close ( struct link_socket * sock )

Definition at line 2400 of file socket.c.

References close_net_event_win32(), link_socket::ctrl_sd, D_LOW, free_buf(), link_socket::listen_handle, M_ERRNO, M_WARN, msg, openvpn_close_socket, overlapped_io_close(), link_socket::reads, link_socket::sd, socket_defined(), SOCKET_UNDEFINED, link_socket::stream_buf, stream_buf_close(), link_socket::stream_buf_data, and link_socket::writes.

Referenced by do_close_link_socket().

◆ link_socket_connection_initiated()

void link_socket_connection_initiated	(	struct link_socket_info *	info,
		const struct link_socket_actual *	addr,
		const char *	common_name,
		struct env_set *	es
	)

Definition at line 2474 of file socket.c.

References link_socket_addr::actual, alloc_buf_gc(), argv_free(), argv_new(), BSTR, buf_printf(), link_socket_info::connection_established, es, gc, gc_free(), gc_new(), link_socket_info::ipchange_command, ipchange_fmt(), link_socket_info::lsa, M_INFO, M_WARN, msg, OPENVPN_PLUGIN_FUNC_SUCCESS, OPENVPN_PLUGIN_IPCHANGE, openvpn_run_script(), plugin_call(), plugin_defined(), link_socket_info::plugins, print_link_socket_actual(), setenv_str(), and setenv_trusted().

Referenced by link_socket_set_outgoing_addr().

◆ link_socket_connection_oriented()

static bool link_socket_connection_oriented ( const struct link_socket * sock )

inlinestatic

Definition at line 648 of file socket.h.

References link_socket::info, link_socket_proto_connection_oriented(), and link_socket_info::proto.

Referenced by check_tls_errors(), process_incoming_link_part1(), socket_connection_reset(), socket_frame_init(), and stream_buf_read_setup().

◆ link_socket_current_remote()

in_addr_t link_socket_current_remote ( const struct link_socket_info * info )

Definition at line 2560 of file socket.c.

References link_socket_addr::actual, openvpn_sockaddr::addr, link_socket_addr::current_remote, link_socket_actual::dest, openvpn_sockaddr::in4, IPV4_INVALID_ADDR, link_socket_actual_defined(), link_socket_info::lsa, and openvpn_sockaddr::sa.

Referenced by do_init_route_list().

◆ link_socket_current_remote_ipv6()

const struct in6_addr * link_socket_current_remote_ipv6 ( const struct link_socket_info * info )

Definition at line 2595 of file socket.c.

References link_socket_addr::actual, openvpn_sockaddr::addr, link_socket_addr::current_remote, link_socket_actual::dest, openvpn_sockaddr::in6, link_socket_actual_defined(), link_socket_info::lsa, and openvpn_sockaddr::sa.

Referenced by do_init_route_ipv6_list().

◆ link_socket_get_outgoing_addr()

static void link_socket_get_outgoing_addr	(	struct buffer *	buf,
		const struct link_socket_info *	info,
		struct link_socket_actual **	act
	)

inlinestatic

Definition at line 963 of file socket.h.

References link_socket_addr::actual, buffer::len, link_socket_actual_defined(), link_socket_bad_outgoing_addr(), and link_socket_info::lsa.

Referenced by encrypt_sign().

◆ link_socket_init_phase1()

void link_socket_init_phase1	(	struct context *	c,
		int	sock_index,
		int	mode
	)

Definition at line 1904 of file socket.c.

References context_2::accept_from, connection_entry::af, link_socket_info::af, local_list::array, ASSERT, options::bind_dev, link_socket::bind_dev, connection_entry::bind_ipv6_only, link_socket_info::bind_ipv6_only, connection_entry::bind_local, link_socket::bind_local, context::c1, context::c2, options::ce, CM_CHILD_TCP, CM_CHILD_UDP, context_1::dns_cache, link_socket::dns_cache, context_1::http_proxy, link_socket::http_proxy, link_socket::info, options::ipchange, link_socket_info::ipchange_command, context_1::link_socket_addrs, context_2::link_sockets, local_entry::local, link_socket::local_host, connection_entry::local_list, link_socket::local_port, LS_MODE_TCP_ACCEPT_FROM, link_socket_info::lsa, options::mark, link_socket::mark, context::mode, link_socket::mode, connection_entry::mtu_discover_type, link_socket::mtu_discover_type, context::options, http_proxy_info::options, context::plugins, link_socket_info::plugins, local_entry::port, http_proxy_options::port, socks_proxy_info::port, local_entry::proto, connection_entry::proto, link_socket_info::proto, PROTO_TCP_CLIENT, PROTO_TCP_SERVER, link_socket::proxy_dest_host, link_socket::proxy_dest_port, options::rcvbuf, socket_buffer_size::rcvbuf, connection_entry::remote, connection_entry::remote_float, link_socket_info::remote_float, link_socket::remote_host, connection_entry::remote_port, link_socket::remote_port, resolve_bind_local(), resolve_remote(), options::resolve_retry_seconds, link_socket::resolve_retry_seconds, link_socket::sd, http_proxy_options::server, socks_proxy_info::server, context_2::server_poll_interval, link_socket::server_poll_timeout, SF_PORT_SHARE, options::sndbuf, socket_buffer_size::sndbuf, link_socket::socket_buffer_sizes, options::sockflags, link_socket::sockflags, context_1::socks_proxy, and link_socket::socks_proxy.

Referenced by do_init_socket_phase1().

◆ link_socket_init_phase2()

void link_socket_init_phase2	(	struct context *	c,
		struct link_socket *	sock
	)

Definition at line 2277 of file socket.c.

References link_socket_addr::actual, openvpn_sockaddr::addr, addr_family_name(), link_socket_info::af, ASSERT, link_socket_addr::bind_local, link_socket::bind_local, context::c2, create_socket(), create_socket_dco_win(), link_socket_addr::current_remote, dco_enabled(), link_socket_actual::dest, context_2::frame, link_socket::info, linksock_print_addr(), link_socket_info::lsa, M_WARN, msg, context::options, phase2_set_socket_flags(), phase2_socks_client(), phase2_tcp_client(), phase2_tcp_server(), link_socket_info::proto, PROTO_TCP_CLIENT, PROTO_TCP_SERVER, PROTO_UDP, register_signal(), link_socket::remote_host, resolve_remote(), link_socket::resolve_retry_seconds, openvpn_sockaddr::sa, link_socket::sd, context::sig, SIG_SOURCE_HARD, siginfo_static, signal_info::signal_received, signal_reset(), signal_info::signal_text, socket_frame_init(), SOCKET_UNDEFINED, link_socket::socks_proxy, signal_info::source, and throw_signal().

Referenced by do_init_socket_phase2().

◆ link_socket_new()

struct link_socket * link_socket_new ( void )

Definition at line 1890 of file socket.c.

References ALLOC_OBJ_CLEAR, link_socket::ctrl_sd, link_socket::ev_arg, EVENT_ARG_LINK_SOCKET, link_socket::sd, event_arg::sock, SOCKET_UNDEFINED, event_arg::type, and event_arg::u.

Referenced by do_link_socket_new().

◆ link_socket_proto_connection_oriented()

static bool link_socket_proto_connection_oriented ( int proto )

inlinestatic

Definition at line 642 of file socket.h.

References proto_is_dgram().

Referenced by addr_match_proto(), addrlist_match_proto(), and link_socket_connection_oriented().

◆ link_socket_read()

static int link_socket_read	(	struct link_socket *	sock,
		struct buffer *	buf,
		struct link_socket_actual *	from
	)

inlinestatic

Definition at line 1066 of file socket.h.

References link_socket_addr::actual, ASSERT, link_socket_actual::dest, link_socket::info, link_socket_read_tcp(), link_socket_read_udp_win32(), link_socket_info::lsa, link_socket_info::proto, proto_is_tcp(), proto_is_udp(), and socket_is_dco_win().

Referenced by read_incoming_link().

◆ link_socket_read_tcp()

int link_socket_read_tcp	(	struct link_socket *	sock,
		struct buffer *	buf
	)

Definition at line 3326 of file socket.c.

References BLEN, BPTR, buffer::len, M_INFO, msg, MSG_NOSIGNAL, link_socket::reads, stream_buf::residual_fully_formed, sockethandle_t::s, link_socket::sd, SOCKET_UNDEFINED, sockethandle_finalize(), link_socket::stream_buf, stream_buf_added(), stream_buf_get_final(), stream_buf_get_next(), stream_buf_reset(), and link_socket::stream_reset.

Referenced by link_socket_read().

◆ link_socket_read_udp_win32()

static int link_socket_read_udp_win32	(	struct link_socket *	sock,
		struct buffer *	buf,
		struct link_socket_actual *	from
	)

inlinestatic

Definition at line 1042 of file socket.h.

References link_socket_addr::actual, link_socket::info, sockethandle_t::is_handle, link_socket_info::lsa, sockethandle_t::prepend_sa, link_socket::reads, sockethandle_t::s, link_socket::sd, SF_PREPEND_SA, socket_is_dco_win(), sockethandle_finalize(), and link_socket::sockflags.

Referenced by link_socket_read().

◆ link_socket_set_outgoing_addr()

static void link_socket_set_outgoing_addr	(	struct link_socket_info *	info,
		const struct link_socket_actual *	act,
		const char *	common_name,
		struct env_set *	es
	)

inlinestatic

Definition at line 984 of file socket.h.

References link_socket_addr::actual, addr_match_proto(), addrlist_match_proto(), link_socket_info::connection_established, link_socket_actual::dest, es, link_socket_connection_initiated(), link_socket_info::lsa, link_socket_info::proto, link_socket_info::remote_float, and link_socket_addr::remote_list.

Referenced by process_incoming_link_part2(), and session_move_active().

◆ link_socket_update_buffer_sizes()

void link_socket_update_buffer_sizes	(	struct link_socket *	sock,
		int	rcvbuf,
		int	sndbuf
	)

Definition at line 1037 of file socket.c.

References socket_buffer_size::rcvbuf, link_socket::sd, socket_buffer_size::sndbuf, link_socket::socket_buffer_sizes, socket_defined(), and socket_set_buffers().

Referenced by do_deferred_options().

◆ link_socket_update_flags()

bool link_socket_update_flags	(	struct link_socket *	sock,
		unsigned int	sockflags
	)

Definition at line 1023 of file socket.c.

References link_socket::sd, socket_defined(), socket_set_flags(), and link_socket::sockflags.

Referenced by do_deferred_options().

◆ link_socket_verify_incoming_addr()

static bool link_socket_verify_incoming_addr	(	struct buffer *	buf,
		const struct link_socket_info *	info,
		const struct link_socket_actual *	from_addr
	)

inlinestatic

Definition at line 935 of file socket.h.

References addrlist_match_proto(), buffer::len, link_socket_actual_defined(), link_socket_info::lsa, link_socket_info::proto, link_socket_info::remote_float, and link_socket_addr::remote_list.

Referenced by process_incoming_link_part1().

◆ link_socket_write()

static ssize_t link_socket_write	(	struct link_socket *	sock,
		struct buffer *	buf,
		struct link_socket_actual *	to
	)

inlinestatic

Definition at line 1196 of file socket.h.

References ASSERT, link_socket::info, link_socket_write_tcp(), link_socket_write_udp(), link_socket_info::proto, proto_is_tcp(), proto_is_udp(), and socket_is_dco_win().

Referenced by process_outgoing_link().

◆ link_socket_write_tcp()

ssize_t link_socket_write_tcp	(	struct link_socket *	sock,
		struct buffer *	buf,
		struct link_socket_actual *	to
	)

Definition at line 3500 of file socket.c.

References ASSERT, BLEN, buf_write_prepend(), D_STREAM_DEBUG, dmsg, htonps, link_socket_write_win32(), stream_buf::maxlen, and buffer::offset.

Referenced by link_socket_write().

◆ link_socket_write_udp()

static ssize_t link_socket_write_udp	(	struct link_socket *	sock,
		struct buffer *	buf,
		struct link_socket_actual *	to
	)

inlinestatic

Definition at line 1183 of file socket.h.

References link_socket_write_win32().

Referenced by link_socket_write().

◆ link_socket_write_win32()

static int link_socket_write_win32	(	struct link_socket *	sock,
		struct buffer *	buf,
		struct link_socket_actual *	to
	)

inlinestatic

Definition at line 1107 of file socket.h.

References openvpn_sockaddr::addr, BLEN, buf_write_prepend(), link_socket_actual::dest, openvpn_sockaddr::in4, openvpn_sockaddr::in6, overlapped_io_active(), sockethandle_t::s, openvpn_sockaddr::sa, link_socket::sd, SF_PREPEND_SA, socket_is_dco_win(), socket_send_queue(), sockethandle_finalize(), SocketHandleGetLastError(), SocketHandleSetLastError(), link_socket::sockflags, status, and link_socket::writes.

Referenced by link_socket_write_tcp(), and link_socket_write_udp().

◆ mac_addr_safe()

bool mac_addr_safe ( const char * mac_addr )

Definition at line 840 of file socket.c.

Referenced by add_option().

◆ openvpn_connect()

int openvpn_connect	(	socket_descriptor_t	sd,
		const struct sockaddr *	remote,
		int	connect_timeout,
		volatile int *	signal_received
	)

Definition at line 1488 of file socket.c.

References af_addr_size(), get_signal(), management_sleep(), openvpn_errno, openvpn_fd_set(), set_nonblock(), and status.

Referenced by man_connect(), and socket_connect().

◆ openvpn_getaddrinfo()

int openvpn_getaddrinfo	(	unsigned int	flags,
		const char *	hostname,
		const char *	servname,
		int	resolve_retry_seconds,
		struct signal_info *	sig_info,
		int	ai_family,
		struct addrinfo **	res
	)

Definition at line 469 of file socket.c.

References ASSERT, CLEAR, D_RESOLVE_ERRORS, D_SOCKET_DEBUG, dmsg, gc, gc_free(), gc_new(), get_signal(), GETADDR_DATAGRAM, GETADDR_FATAL, GETADDR_FATAL_ON_SIGNAL, GETADDR_HOST_ORDER, GETADDR_MENTION_RESOLVE_RETRY, GETADDR_MSG_VIRT_OUT, GETADDR_PASSIVE, GETADDR_RANDOMIZE, GETADDR_RESOLVE, GETADDR_TRY_ONCE, GETADDR_UPDATE_MANAGEMENT_STATE, GETADDR_WARN_ON_SIGNAL, getaddrinfo_addr_family_name(), hostname_randomize(), M_FATAL, M_MSG_VIRT_OUT, M_WARN, management_set_state(), management_sleep(), msg, OPENVPN_STATE_RESOLVE, signal_info::signal_received, signal_reset(), and status.

Referenced by dns_server_addr_parse(), do_preresolve_host(), get_addr_generic(), init_route(), man_settings_init(), management_post_tunnel_open(), resolve_bind_local(), resolve_remote(), and socket_listen_accept().

◆ openvpn_inet_aton()

int openvpn_inet_aton	(	const char *	dotted_quad,
		struct in_addr *	addr
	)

Definition at line 713 of file socket.c.

References CC_DIGIT, CC_DOT, CLEAR, OIA_ERROR, OIA_HOSTNAME, OIA_IP, and string_class().

Referenced by ip_addr_dotted_quad_safe().

◆ print_in6_addr()

const char * print_in6_addr	(	struct in6_addr	addr6,
		unsigned int	flags,
		struct gc_arena *	gc
	)

◆ print_in_addr_t()

const char * print_in_addr_t	(	in_addr_t	addr,
		unsigned int	flags,
		struct gc_arena *	gc
	)

Definition at line 3007 of file socket.c.

References CLEAR, gc, gc_malloc(), IA_EMPTY_IF_UNDEF, and IA_NET_ORDER.

Referenced by adapter_index_of_ip(), add_route(), add_route_ipapi(), check_addr_clash(), dco_win_add_iroute_ipv4(), dco_win_del_iroute_ipv4(), delete_route(), dhcp_extract_router_msg(), dhcp_masq_addr(), do_address_service(), do_close_tun(), do_ifconfig_ipv4(), do_ifconfig_setenv(), do_open_tun(), format_route_entry(), get_default_gateway_row(), helper_add_route(), helper_client_server(), ifconfig_options_string(), ifconfig_pool_init(), ifconfig_pool_list(), ifconfig_pool_verify_range(), ifconfig_sanity_check(), ip_addr_string_to_array(), log_entry_print(), man_kill(), mroute_addr_print_ex(), multi_add_iroutes(), multi_client_connect_late_setup(), multi_print_status(), multi_select_virtual_addr(), netsh_delete_address_dns(), netsh_ifconfig(), netsh_ifconfig_options(), prepare_push_reply(), print_client_nat_list(), print_default_gateway(), print_netmask(), print_opt_route(), print_opt_route_gateway(), print_pkt(), route_string(), setenv_route_addr(), show_dhcp_option_addrs(), show_dns_options(), show_p2mp_parms(), tuntap_dhcp_mask(), tuntap_set_ip_addr(), tuntap_set_ptp(), undo_ifconfig_ipv4(), verify_255_255_255_252(), verify_common_subnet(), and windows_route_find_if_index().

◆ print_in_port_t()

const char * print_in_port_t	(	in_port_t	port,
		struct gc_arena *	gc
	)

Definition at line 3043 of file socket.c.

References alloc_buf_gc(), BSTR, buf_printf(), and gc.

Referenced by show_dns_options().

◆ print_link_socket_actual()

const char * print_link_socket_actual	(	const struct link_socket_actual *	act,
		struct gc_arena *	gc
	)

◆ print_link_socket_actual_ex()

const char * print_link_socket_actual_ex	(	const struct link_socket_actual *	act,
		const char *	separator,
		const unsigned int	flags,
		struct gc_arena *	gc
	)