#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 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

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	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)

#define	IPv4_UDP_HEADER_SIZE 28

#define	IPv4_TCP_HEADER_SIZE 40

#define	IPv6_UDP_HEADER_SIZE 48

#define	IPv6_TCP_HEADER_SIZE 60

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
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	socket_finalize (SOCKET s, struct overlapped_io io, struct buffer buf, struct link_socket_actual *from)

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 mode)

void	link_socket_init_phase2 (struct context *c)

void	do_preresolve (struct context *c)

void	socket_adjust_frame_parameters (struct frame *frame, int proto)

void	frame_adjust_path_mtu (struct frame *frame, int pmtu, int proto)

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_ex (const struct openvpn_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)

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 *ls, unsigned int sockflags)

void	link_socket_update_buffer_sizes (struct link_socket *ls, 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, volatile int *signal_received)
	Translate an IPv4 addr or hostname from string form to in_addr_t. More...

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. More...

int	openvpn_getaddrinfo (unsigned int flags, const char hostname, const char servname, int resolve_retry_seconds, volatile int signal_received, 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. More...

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

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

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 (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 in_addr_t	addr_host (const struct openvpn_sockaddr *addr)

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 void	addr_copy_sa (struct openvpn_sockaddr dst, const struct openvpn_sockaddr src)

static bool	addr_inet4or6 (struct sockaddr *addr)

int	addr_guess_family (sa_family_t af, const char *name)

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)

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)

int	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 size_t	link_socket_write_udp (struct link_socket sock, struct buffer buf, struct link_socket_actual *to)

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

static bool	socket_read_residual (const struct link_socket *s)

static event_t	socket_event_handle (const struct link_socket *s)

event_t	socket_listen_event_handle (struct link_socket *s)

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

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

static void	socket_reset_listen_persistent (struct link_socket *s)

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

Variables
const int	proto_overhead []

Macro Definition Documentation

◆ GETADDR_CACHE_MASK

#define GETADDR_CACHE_MASK (GETADDR_DATAGRAM|GETADDR_PASSIVE)

Definition at line 484 of file socket.h.

Referenced by do_preresolve_host(), and get_cached_dns_entry().

◆ GETADDR_DATAGRAM

#define GETADDR_DATAGRAM (1<<11)

Definition at line 482 of file socket.h.

Referenced by do_preresolve(), openvpn_getaddrinfo(), resolve_bind_local(), and resolve_remote().

◆ GETADDR_FATAL

#define GETADDR_FATAL (1<<1)

Definition at line 472 of file socket.h.

Referenced by do_preresolve(), get_ip_addr(), init_tun(), man_settings_init(), openvpn_getaddrinfo(), resolve_bind_local(), and resolve_remote().

◆ GETADDR_FATAL_ON_SIGNAL

#define GETADDR_FATAL_ON_SIGNAL (1<<4)

Definition at line 475 of file socket.h.

Referenced by init_tun(), and openvpn_getaddrinfo().

◆ GETADDR_HOST_ORDER

#define GETADDR_HOST_ORDER (1<<2)

Definition at line 473 of file socket.h.

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

◆ GETADDR_MENTION_RESOLVE_RETRY

#define GETADDR_MENTION_RESOLVE_RETRY (1<<3)

Definition at line 474 of file socket.h.

Referenced by do_preresolve(), openvpn_getaddrinfo(), and resolve_remote().

◆ GETADDR_MSG_VIRT_OUT

#define GETADDR_MSG_VIRT_OUT (1<<6)

Definition at line 477 of file socket.h.

Referenced by man_kill(), and openvpn_getaddrinfo().

◆ GETADDR_PASSIVE

#define GETADDR_PASSIVE (1<<10)

Definition at line 481 of file socket.h.

Referenced by do_preresolve(), man_settings_init(), management_post_tunnel_open(), openvpn_getaddrinfo(), and resolve_bind_local().

◆ GETADDR_RANDOMIZE

#define GETADDR_RANDOMIZE (1<<9)

Definition at line 480 of file socket.h.

Referenced by do_preresolve(), openvpn_getaddrinfo(), and sf2gaf().

◆ GETADDR_RESOLVE

#define GETADDR_RESOLVE (1<<0)

Definition at line 471 of file socket.h.

Referenced by add_option(), do_preresolve(), get_ipv6_addr(), init_route(), init_route_list(), init_tun(), man_settings_init(), openvpn_getaddrinfo(), resolve_bind_local(), and resolve_remote().

◆ GETADDR_TRY_ONCE

#define GETADDR_TRY_ONCE (1<<7)

Definition at line 478 of file socket.h.

Referenced by openvpn_getaddrinfo(), and resolve_remote().

◆ GETADDR_UPDATE_MANAGEMENT_STATE

#define GETADDR_UPDATE_MANAGEMENT_STATE (1<<8)

Definition at line 479 of file socket.h.

Referenced by do_preresolve(), openvpn_getaddrinfo(), and resolve_remote().

◆ GETADDR_WARN_ON_SIGNAL

#define GETADDR_WARN_ON_SIGNAL (1<<5)

Definition at line 476 of file socket.h.

Referenced by init_route(), init_route_list(), man_settings_init(), openvpn_getaddrinfo(), and resolve_bind_local().

◆ htonps

#define htonps ( x ) htons(x)

Definition at line 58 of file socket.h.

Referenced by link_socket_write_tcp().

◆ IA_EMPTY_IF_UNDEF

#define IA_EMPTY_IF_UNDEF (1<<0)

Definition at line 357 of file socket.h.

Referenced by do_close_tun(), do_open_tun(), log_entry_print(), mroute_addr_print_ex(), multi_print_status(), print_in6_addr(), and print_in_addr_t().

◆ IA_NET_ORDER

#define IA_NET_ORDER (1<<1)

Definition at line 358 of file socket.h.

Referenced by format_route_entry(), mroute_addr_print_ex(), print_client_nat_list(), print_in_addr_t(), print_pkt(), tuntap_dhcp_mask(), and tuntap_set_ptp().

◆ IPV4_INVALID_ADDR

#define IPV4_INVALID_ADDR 0xffffffff

Definition at line 392 of file socket.h.

Referenced by init_route_list(), link_socket_current_remote(), and redirect_default_route_to_vpn().

◆ IPv4_TCP_HEADER_SIZE

#define IPv4_TCP_HEADER_SIZE 40

Definition at line 583 of file socket.h.

◆ IPv4_UDP_HEADER_SIZE

#define IPv4_UDP_HEADER_SIZE 28

Definition at line 582 of file socket.h.

◆ IPv6_TCP_HEADER_SIZE

#define IPv6_TCP_HEADER_SIZE 60

Definition at line 585 of file socket.h.

◆ IPv6_UDP_HEADER_SIZE

#define IPv6_UDP_HEADER_SIZE 48

Definition at line 584 of file socket.h.

◆ LS_MODE_DEFAULT

#define LS_MODE_DEFAULT 0

Definition at line 191 of file socket.h.

Referenced by init_instance(), and phase2_tcp_server().

◆ LS_MODE_TCP_ACCEPT_FROM

#define LS_MODE_TCP_ACCEPT_FROM 2

Definition at line 193 of file socket.h.

Referenced by init_instance(), link_socket_init_phase1(), linksock_print_addr(), multi_tcp_instance_specific_init(), and phase2_tcp_server().

◆ LS_MODE_TCP_LISTEN

#define LS_MODE_TCP_LISTEN 1

Definition at line 192 of file socket.h.

Referenced by init_instance(), and phase2_tcp_server().

◆ MSG_NOSIGNAL

#define MSG_NOSIGNAL 0

Definition at line 252 of file socket.h.

Referenced by establish_socks_proxy_passthru(), establish_socks_proxy_udpassoc(), link_socket_read_tcp(), link_socket_write_win32(), man_read(), man_write(), recv_line(), recv_socks_reply(), send_line(), socks_handshake(), and socks_username_password_auth().

◆ ntohps

#define ntohps ( x ) ntohs(x)

Definition at line 61 of file socket.h.

Referenced by stream_buf_added().

◆ OIA_ERROR

#define OIA_ERROR -1

Definition at line 425 of file socket.h.

Referenced by openvpn_inet_aton().

◆ OIA_HOSTNAME

#define OIA_HOSTNAME 0

Definition at line 423 of file socket.h.

Referenced by openvpn_inet_aton().

◆ OIA_IP

#define OIA_IP 1

Definition at line 424 of file socket.h.

Referenced by ip_addr_dotted_quad_safe(), and openvpn_inet_aton().

◆ openvpn_close_socket

#define openvpn_close_socket ( s ) closesocket(s)

Definition at line 257 of file socket.h.

Referenced by link_socket_close(), man_close_socket(), phase2_tcp_client(), sd_close(), socket_connect(), socket_do_accept(), and socket_listen_accept().

◆ OPENVPN_PORT

#define OPENVPN_PORT "1194"

Definition at line 41 of file socket.h.

Referenced by init_options().

◆ PS_DONT_SHOW_ADDR

#define PS_DONT_SHOW_ADDR (1<<3)

Definition at line 312 of file socket.h.

Referenced by print_sockaddr_ex().

◆ PS_DONT_SHOW_FAMILY

#define PS_DONT_SHOW_FAMILY (1<<4)

Definition at line 313 of file socket.h.

Referenced by log_entry_print(), and print_sockaddr_ex().

◆ PS_SHOW_PKTINFO

#define PS_SHOW_PKTINFO (1<<2)

Definition at line 311 of file socket.h.

Referenced by print_link_socket_actual(), and print_link_socket_actual_ex().

◆ PS_SHOW_PORT

#define PS_SHOW_PORT (1<<1)

Definition at line 310 of file socket.h.

Referenced by ipchange_fmt(), link_socket_bad_incoming_addr(), log_entry_print(), print_link_socket_actual(), print_openvpn_sockaddr(), print_sockaddr(), print_sockaddr_ex(), and socket_bind().

◆ PS_SHOW_PORT_IF_DEFINED

#define PS_SHOW_PORT_IF_DEFINED (1<<0)

Definition at line 309 of file socket.h.

Referenced by linksock_print_addr(), and print_sockaddr_ex().

◆ RESOLV_RETRY_INFINITE

#define RESOLV_RETRY_INFINITE 1000000000

Definition at line 47 of file socket.h.

Referenced by add_option(), init_options(), and resolve_remote().

◆ SA_IP_PORT

#define SA_IP_PORT (1<<0)

Definition at line 365 of file socket.h.

Referenced by setenv_sockaddr(), setenv_trusted(), and setenv_untrusted().

◆ SA_SET_IF_NONZERO

#define SA_SET_IF_NONZERO (1<<1)

Definition at line 366 of file socket.h.

Referenced by multi_set_virtual_addr_env(), setenv_in6_addr(), and setenv_in_addr_t().

◆ SF_GETADDRINFO_DGRAM

#define SF_GETADDRINFO_DGRAM (1<<4)

Definition at line 207 of file socket.h.

Referenced by create_socket().

◆ SF_HOST_RANDOMIZE

#define SF_HOST_RANDOMIZE (1<<3)

Definition at line 206 of file socket.h.

Referenced by add_option(), do_preresolve(), and sf2gaf().

◆ SF_PORT_SHARE

#define SF_PORT_SHARE (1<<2)

Definition at line 205 of file socket.h.

Referenced by link_socket_init_phase1(), and stream_buf_init().

◆ SF_TCP_NODELAY

#define SF_TCP_NODELAY (1<<1)

Definition at line 204 of file socket.h.

Referenced by add_option(), helper_tcp_nodelay(), and socket_set_flags().

◆ SF_USE_IP_PKTINFO

#define SF_USE_IP_PKTINFO (1<<0)

Definition at line 203 of file socket.h.

Referenced by add_option(), create_socket_udp(), link_socket_read_tcp(), and link_socket_write_win32().

Typedef Documentation

◆ packet_size_type

typedef uint16_t packet_size_type

Definition at line 55 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 520 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 2918 of file socket.c.

References add(), and UINT8_MAX.

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

◆ addr_copy_sa()

static void addr_copy_sa	(	struct openvpn_sockaddr *	dst,
		const struct openvpn_sockaddr *	src
	)

inlinestatic

Definition at line 839 of file socket.h.

References openvpn_sockaddr::addr.

Referenced by link_socket_read().

◆ addr_defined()

static bool addr_defined ( const struct openvpn_sockaddr * addr )

inlinestatic

Definition at line 620 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 658 of file socket.h.

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

Referenced by link_socket_write_win32(), and print_link_socket_actual_ex().

◆ addr_family_name()

const char* addr_family_name ( int af )

Definition at line 3130 of file socket.c.

Referenced by link_socket_init_phase2(), proto_is_tcp(), and socket_bind().

◆ addr_guess_family()

int addr_guess_family	(	sa_family_t	af,
		const char *	name
	)

Referenced by addr_inet4or6().

◆ addr_host()

static in_addr_t addr_host ( const struct openvpn_sockaddr * addr )

inlinestatic

Definition at line 735 of file socket.h.

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

◆ addr_inet4or6()

static bool addr_inet4or6 ( struct sockaddr * addr )

inlinestatic

Definition at line 845 of file socket.h.

References addr_guess_family().

◆ addr_local()

static bool addr_local ( const struct sockaddr * addr )

inlinestatic

Definition at line 637 of file socket.h.

Referenced by create_socket().

◆ addr_match()

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

inlinestatic

Definition at line 691 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 803 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 786 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 824 of file socket.h.

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

Referenced by link_socket_read_tcp(), and phase2_socks_client().

◆ addrlist_match()

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

inlinestatic

Definition at line 706 of file socket.h.

References openvpn_sockaddr::addr, ASSERT, openvpn_sockaddr::in4, openvpn_sockaddr::in6, IN6_ARE_ADDR_EQUAL, in_addr_t, 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 814 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 751 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 853 of file socket.h.

References ASSERT, M_ERR, and msg.

Referenced by link_socket_read_tcp(), link_socket_write_win32(), openvpn_connect(), socket_do_accept(), socket_finalize(), and socket_recv_queue().

◆ ascii2af()

sa_family_t ascii2af ( const char * proto_name )

Definition at line 3077 of file socket.c.

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

Referenced by add_option(), and proto_is_tcp().

◆ ascii2proto()

int ascii2proto ( const char * proto_name )

Definition at line 3063 of file socket.c.

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

Referenced by add_option(), and proto_is_tcp().

◆ bad_address_length()

void bad_address_length	(	int	actual,
		int	expected
	)

Definition at line 3182 of file socket.c.

References M_FATAL, and msg.

Referenced by link_socket_read_tcp(), socket_finalize(), and socket_recv_queue().

◆ create_socket_tcp()

socket_descriptor_t create_socket_tcp ( struct addrinfo * )

Definition at line 1010 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 ( int proto )

inlinestatic

Definition at line 590 of file socket.h.

References ASSERT, PROTO_N, and proto_overhead.

Referenced by frame_adjust_path_mtu(), and process_outgoing_link().

◆ do_preresolve()

void do_preresolve ( struct context * c )

◆ frame_adjust_path_mtu()

void frame_adjust_path_mtu	(	struct frame *	frame,
		int	pmtu,
		int	proto
	)

Definition at line 1664 of file socket.c.

References datagram_overhead(), frame_set_mtu_dynamic(), and SET_MTU_UPPER_BOUND.

Referenced by check_fragment().

◆ 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 224 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(), and option_iroute_ipv6().

◆ getaddr()

in_addr_t getaddr	(	unsigned int	flags,
		const char *	hostname,
		int	resolve_retry_seconds,
		bool *	succeeded,
		volatile int *	signal_received
	)

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 193 of file socket.c.

References get_addr_generic(), in_addr_t, 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 699 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 785 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 749 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 685 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 872 of file socket.h.

References addr_port_match(), stream_buf::buf, link_socket_actual::dest, link_socket_connection_oriented(), link_socket::sd, and link_socket::stream_buf.

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 2394 of file socket.c.

References openvpn_sockaddr::addr, D_LINK_ERRORS, link_socket_actual::dest, 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 2423 of file socket.c.

References D_READ_WRITE, dmsg, and in_addr_t.

Referenced by link_socket_get_outgoing_addr().

◆ link_socket_close()

void link_socket_close ( struct link_socket * sock )

Definition at line 2259 of file socket.c.

References close_net_event_win32(), link_socket::ctrl_sd, D_LOW, free, 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 2343 of file socket.c.

References link_socket_addr::actual, alloc_buf_gc(), argv_free(), argv_new(), BSTR, buf_printf(), link_socket_info::connection_established, 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 607 of file socket.h.

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

Referenced by check_tls_errors(), link_socket_actual_match(), 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 2429 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 2464 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 951 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	mode
	)

Definition at line 1851 of file socket.c.

Referenced by init_instance().

◆ link_socket_init_phase2()

void link_socket_init_phase2 ( struct context * c )

Definition at line 2146 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(), link_socket_addr::current_remote, link_socket_actual::dest, context_2::frame, link_socket::info, context_2::link_socket, linksock_print_addr(), link_socket_info::lsa, M_WARN, msg, 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, link_socket::remote_host, resolve_remote(), link_socket::resolve_retry_seconds, openvpn_sockaddr::sa, link_socket::sd, context::sig, signal_info::signal_received, SIGUSR1, socket_frame_init(), SOCKET_UNDEFINED, and link_socket::socks_proxy.

Referenced by init_instance().

◆ link_socket_new()

struct link_socket* link_socket_new ( void )

Definition at line 1840 of file socket.c.

References ALLOC_OBJ_CLEAR, link_socket::ctrl_sd, link_socket::sd, and SOCKET_UNDEFINED.

Referenced by do_link_socket_new().

◆ link_socket_proto_connection_oriented()

static bool link_socket_proto_connection_oriented ( int proto )

inlinestatic

Definition at line 601 of file socket.h.

References proto_is_dgram().

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

◆ link_socket_read()

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

inlinestatic

Definition at line 1036 of file socket.h.

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

Referenced by read_incoming_link().

◆ link_socket_read_tcp()

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

◆ 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 1019 of file socket.h.

References link_socket::reads, link_socket::sd, and socket_finalize().

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 972 of file socket.h.

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

Referenced by process_incoming_link_part2(), and tls_process().

◆ link_socket_update_buffer_sizes()

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

Definition at line 994 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 *	ls,
		unsigned int	sockflags
	)

Definition at line 981 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 923 of file socket.h.

References openvpn_sockaddr::addr, addrlist_match_proto(), link_socket_actual::dest, buffer::len, link_socket_actual_defined(), link_socket_info::lsa, link_socket_info::proto, link_socket_info::remote_float, link_socket_addr::remote_list, and openvpn_sockaddr::sa.

Referenced by process_incoming_link_part1().

◆ link_socket_write()

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

inlinestatic

Definition at line 1150 of file socket.h.

References ASSERT, BPTR, link_socket::info, link_socket_write_tcp(), link_socket_write_udp(), link_socket_info::proto, proto_is_tcp(), proto_is_udp(), link_socket::sd, and openvpn_iphdr::tos.

Referenced by process_outgoing_link().

◆ link_socket_write_tcp()

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

Definition at line 3348 of file socket.c.

References openvpn_sockaddr::addr, ASSERT, BLEN, BPTR, buf_write_prepend(), D_STREAM_DEBUG, link_socket_actual::dest, dmsg, htonps, link_socket_write_win32(), stream_buf::maxlen, buffer::offset, openvpn_sockaddr::sa, link_socket::sd, and SOL_IP.

Referenced by link_socket_read(), and link_socket_write().

◆ link_socket_write_udp()

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

inlinestatic

Definition at line 1137 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 1075 of file socket.h.

References openvpn_sockaddr::addr, addr_defined_ipi(), af_addr_size(), BLEN, BPTR, link_socket_actual::dest, link_socket::info, MSG_NOSIGNAL, overlapped_io_active(), link_socket_info::proto, proto_is_udp(), openvpn_sockaddr::sa, link_socket::sd, SF_USE_IP_PKTINFO, socket_finalize(), socket_send_queue(), 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 802 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 1436 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,
		volatile int *	signal_received,
		int	ai_family,
		struct addrinfo **	res
	)

◆ openvpn_inet_aton()

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

Definition at line 675 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 2876 of file socket.c.

References alloc_buf_gc(), BSTR, buf_printf(), CLEAR, IA_EMPTY_IF_UNDEF, and IA_NET_ORDER.

Referenced by adapter_index_of_ip(), add_route(), add_route_ipapi(), check_addr_clash(), check_subnet_conflict(), 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_pool_write(), ifconfig_sanity_check(), ip_addr_string_to_array(), log_entry_print(), man_kill(), man_record_peer_info(), 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(), open_null(), 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_p2mp_parms(), tuntap_dhcp_mask(), tuntap_set_ip_addr(), tuntap_set_ptp(), verify_255_255_255_252(), verify_common_subnet(), and windows_route_find_if_index().

◆ 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
	)

Definition at line 2805 of file socket.c.

References openvpn_sockaddr::addr, addr_defined_ipi(), alloc_buf_gc(), BSTR, buf_printf(), CLEAR, link_socket_actual::dest, IF_NAMESIZE, openvpn_sockaddr::in4, print_sockaddr_ex(), PS_SHOW_PKTINFO, and openvpn_sockaddr::sa.

Referenced by linksock_print_addr(), print_link_socket_actual(), and print_sockaddr().

◆ print_openvpn_sockaddr()

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

inlinestatic

Definition at line 332 of file socket.h.

References openvpn_sockaddr::addr, print_sockaddr_ex(), PS_SHOW_PORT, and openvpn_sockaddr::sa.

Referenced by recv_socks_reply().

◆ print_openvpn_sockaddr_ex()

static const char* print_openvpn_sockaddr_ex	(	const struct openvpn_sockaddr *	addr,
		const char *	separator,
		const unsigned int	flags,
		struct gc_arena *	gc
	)