socket_util.c File Reference

#include "syshead.h"
#include "socket_util.h"
#include "crypto.h"
#include "manage.h"

Include dependency graph for socket_util.c:

Go to the source code of this file.

Data Structures
struct	proto_names

Macros
#define	IF_NAMESIZE   16
#define	n_rnd_bytes   6

Functions
const char *	print_sockaddr_ex (const struct sockaddr *sa, 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_link_socket_actual_ex (const struct link_socket_actual *act, const char *separator, const unsigned int flags, 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 a6, 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)
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 *	addr_family_name (int af)
const char *	proto_remote (int proto, bool remote)
static const char *	getaddrinfo_addr_family_name (int af)
	Small helper function for openvpn_getaddrinfo to print the address family when resolving fails.
static const char *	hostname_randomize (const char *hostname, struct gc_arena *gc)
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)
int	openvpn_inet_aton (const char *dotted_quad, struct in_addr *addr)
bool	ip_addr_dotted_quad_safe (const char *dotted_quad)
bool	ipv6_addr_safe (const char *ipv6_text_addr)
static bool	dns_addr_safe (const char *addr)
bool	ip_or_dns_addr_safe (const char *addr, const bool allow_fqdn)
bool	mac_addr_safe (const char *mac_addr)

Variables
static const struct proto_names	proto_names []

Macro Definition Documentation

IF_NAMESIZE

#define IF_NAMESIZE   16

Definition at line 123 of file socket_util.c.

n_rnd_bytes

#define n_rnd_bytes   6

Function Documentation

add_in6_addr()

struct in6_addr add_in6_addr	(	struct in6_addr	base,
		uint32_t	add
	)

Definition at line 242 of file socket_util.c.

References i.

Referenced by helper_client_server(), ifconfig_pool_acquire(), ifconfig_pool_handle_to_ipv6_base(), and test_add_in6_addr_tc().

addr_family_name()

const char * addr_family_name

(

int

af

)

Definition at line 446 of file socket_util.c.

References buffer::len.

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

ascii2af()

sa_family_t ascii2af

(

const char *

proto_name

)

Definition at line 396 of file socket_util.c.

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

Referenced by add_option().

ascii2proto()

int ascii2proto

(

const char *

proto_name

)

Definition at line 383 of file socket_util.c.

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

Referenced by add_option().

dns_addr_safe()

static bool dns_addr_safe ( const char *  addr )

static

Definition at line 859 of file socket_util.c.

References CC_ALNUM, CC_DASH, CC_DOT, and string_class().

Referenced by ip_or_dns_addr_safe().

getaddrinfo_addr_family_name()

static const char * getaddrinfo_addr_family_name ( int  af )

static

Small helper function for openvpn_getaddrinfo to print the address family when resolving fails.

Definition at line 498 of file socket_util.c.

References buffer::len.

Referenced by openvpn_getaddrinfo().

hostname_randomize()

static const char * hostname_randomize ( const char *  hostname, struct gc_arena *  gc  )

static

Definition at line 517 of file socket_util.c.

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

Referenced by openvpn_getaddrinfo().

ip_addr_dotted_quad_safe()

bool ip_addr_dotted_quad_safe

(

const char *

dotted_quad

)

Definition at line 787 of file socket_util.c.

References OIA_IP, and openvpn_inet_aton().

Referenced by check_route_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 873 of file socket_util.c.

References dns_addr_safe(), and ip_addr_dotted_quad_safe().

Referenced by add_option(), and check_route_option().

ipv6_addr_safe()

bool ipv6_addr_safe

(

const char *

ipv6_text_addr

)

Definition at line 837 of file socket_util.c.

Referenced by add_option(), and check_route6_option().

mac_addr_safe()

bool mac_addr_safe

(

const char *

mac_addr

)

Definition at line 890 of file socket_util.c.

Referenced by add_option().

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 537 of file socket_util.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, res, 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 763 of file socket_util.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	a6,
		unsigned int	flags,
		struct gc_arena *	gc
	)

Definition at line 216 of file socket_util.c.

References gc, gc_malloc(), and IA_EMPTY_IF_UNDEF.

Referenced by add_route_ipv6(), check_mapped_ipv4_address(), dco_win_add_iroute_ipv6(), dco_win_del_iroute_ipv6(), delete_route_ipv6(), do_address_service(), do_ifconfig_ipv6(), do_ifconfig_setenv(), get_default_gateway_ipv6(), helper_client_server(), ifconfig_pool_init(), ifconfig_pool_list(), init_route_ipv6_list(), log_entry_print(), mroute_addr_print_ex(), mroute_extract_addr_ip(), multi_add_iroutes(), multi_client_connect_late_setup(), multi_print_status(), multi_select_virtual_addr(), netsh_delete_address_dns(), netsh_set_dns6_servers(), prepare_push_reply(), print_default_gateway(), setenv_route_ipv6(), show_dns_options(), show_p2mp_parms(), test_add_in6_addr_tc(), and undo_ifconfig_ipv6().

print_in_addr_t()

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

Definition at line 196 of file socket_util.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 231 of file socket_util.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
	)

Definition at line 117 of file socket_util.c.

References gc, print_link_socket_actual_ex(), PS_SHOW_PKTINFO, and PS_SHOW_PORT.

Referenced by do_pre_decrypt_check(), drop_if_recursive_routing(), handle_data_channel_packet(), link_socket_bad_incoming_addr(), link_socket_connection_initiated(), print_key_id_not_found_reason(), process_incoming_link_part1(), process_outgoing_link(), read_control_auth(), resolve_remote(), socket_listen_accept(), tcp_connection_established(), tls_multi_process(), tls_pre_decrypt(), tls_pre_decrypt_lite(), and tls_update_remote_addr().

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 127 of file socket_util.c.

References addr_defined_ipi(), alloc_buf_gc(), BSTR, buf_printf(), CLEAR, gc, IF_NAMESIZE, buffer::len, print_sockaddr_ex(), PS_SHOW_PKTINFO, and openvpn_sockaddr::sa.

Referenced by linksock_print_addr(), and print_link_socket_actual().

print_sockaddr_ex()

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

Definition at line 38 of file socket_util.c.

References alloc_buf_gc(), ASSERT, BSTR, buf_printf(), buf_puts(), gc, buffer::len, PS_DONT_SHOW_ADDR, PS_DONT_SHOW_FAMILY, PS_SHOW_PORT, PS_SHOW_PORT_IF_DEFINED, and status.

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

proto2ascii()

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

Definition at line 409 of file socket_util.c.

References proto_names::display_form, i, proto_names::proto, proto_names::proto_af, proto_names::short_form, and SIZE.

Referenced by ce_management_query_remote(), linksock_print_addr(), man_kill(), management_callback_remote_entry_get(), mroute_addr_print_ex(), process_incoming_link_part1(), process_outgoing_link(), setenv_local_entry(), show_connection_entry(), and x_check_status().

proto2ascii_all()

const char * proto2ascii_all

(

struct gc_arena *

gc

)

Definition at line 430 of file socket_util.c.

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

Referenced by add_option().

proto_remote()

const char * proto_remote	(	int	proto,
		bool	remote
	)

Definition at line 472 of file socket_util.c.

References ASSERT, PROTO_N, PROTO_TCP_CLIENT, PROTO_TCP_SERVER, and PROTO_UDP.

Referenced by options_string().

setenv_in6_addr()

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

Definition at line 330 of file socket_util.c.

References openvpn_sockaddr::addr, CLEAR, es, openvpn_sockaddr::in6, SA_SET_IF_NONZERO, and setenv_sockaddr().

Referenced by multi_set_virtual_addr_env().

setenv_in_addr_t()

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

Definition at line 316 of file socket_util.c.

References openvpn_sockaddr::addr, CLEAR, es, openvpn_sockaddr::in4, SA_SET_IF_NONZERO, and setenv_sockaddr().

Referenced by multi_set_virtual_addr_env().

setenv_link_socket_actual()

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

Definition at line 344 of file socket_util.c.

References link_socket_actual::dest, es, and setenv_sockaddr().

Referenced by setenv_trusted(), and setenv_untrusted().

setenv_sockaddr()

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

Definition at line 263 of file socket_util.c.

References openvpn_sockaddr::addr, es, openvpn_sockaddr::in4, openvpn_sockaddr::in6, openvpn_sockaddr::sa, SA_IP_PORT, setenv_int(), and setenv_str().

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

Variable Documentation

proto_names

const struct proto_names proto_names[]

static

Initial value:

= {
    { "proto-uninitialized", "proto-NONE", AF_UNSPEC, PROTO_NONE },
    
    { "udp", "UDP", AF_UNSPEC, PROTO_UDP },
    { "tcp-server", "TCP_SERVER", AF_UNSPEC, PROTO_TCP_SERVER },
    { "tcp-client", "TCP_CLIENT", AF_UNSPEC, PROTO_TCP_CLIENT },
    { "tcp", "TCP", AF_UNSPEC, PROTO_TCP },
    
    { "udp4", "UDPv4", AF_INET, PROTO_UDP },
    { "tcp4-server", "TCPv4_SERVER", AF_INET, PROTO_TCP_SERVER },
    { "tcp4-client", "TCPv4_CLIENT", AF_INET, PROTO_TCP_CLIENT },
    { "tcp4", "TCPv4", AF_INET, PROTO_TCP },
    
    { "udp6", "UDPv6", AF_INET6, PROTO_UDP },
    { "tcp6-server", "TCPv6_SERVER", AF_INET6, PROTO_TCP_SERVER },
    { "tcp6-client", "TCPv6_CLIENT", AF_INET6, PROTO_TCP_CLIENT },
    { "tcp6", "TCPv6", AF_INET6, PROTO_TCP },
}

Definition at line 363 of file socket_util.c.