mudp.c File Reference

#include "syshead.h"
#include "multi.h"
#include <inttypes.h>
#include "forward.h"
#include "memdbg.h"
#include "ssl_pkt.h"

Include dependency graph for mudp.c:

Go to the source code of this file.

Functions
static void	send_hmac_reset_packet (struct multi_context *m, struct tls_pre_decrypt_state *state, struct tls_auth_standalone *tas, struct session_id *sid, bool request_resend_wkc)
static bool	do_pre_decrypt_check (struct multi_context *m, struct tls_pre_decrypt_state *state, struct mroute_addr addr)
struct multi_instance *	multi_get_create_instance_udp (struct multi_context *m, bool *floated)
	Get, and if necessary create, the multi_instance associated with a packet's source address. More...
static void	multi_process_outgoing_link (struct multi_context *m, const unsigned int mpp_flags)
static void	multi_process_io_udp (struct multi_context *m)
static unsigned int	p2mp_iow_flags (const struct multi_context *m)
void	tunnel_server_udp (struct context *top)
	Main event loop for OpenVPN in UDP server mode. More...

Function Documentation

do_pre_decrypt_check()

static bool do_pre_decrypt_check ( struct multi_context *  m, struct tls_pre_decrypt_state *  state, struct mroute_addr  addr  )

static

Definition at line 67 of file mudp.c.

References ASSERT, BPTR, context_2::buf, buf_advance(), context::c2, calculate_session_id_hmac(), check_session_id_hmac(), CO_FORCE_TLSCRYPTV2_COOKIE, D_MULTI_DEBUG, D_MULTI_MEDIUM, link_socket_actual::dest, EARLY_NEG_MASK, EARLY_NEG_START, crypto_options::flags, context_2::from, gc_free(), gc_new(), options::handshake_window, packet_id_net::id, multi_context::initial_rate_limiter, msg, tls_wrap_ctx::opt, context::options, P_OPCODE_SHIFT, packet_id_read(), packet_opcode_name(), tls_pre_decrypt_state::peer_session_id, print_link_socket_actual(), reflect_filter_rate_limit_check(), send_hmac_reset_packet(), context_2::session_id_hmac, SID_SIZE, context_2::tls_auth_standalone, tls_pre_decrypt_lite(), tls_auth_standalone::tls_wrap, multi_context::top, VERDICT_VALID_ACK_V1, VERDICT_VALID_CONTROL_V1, VERDICT_VALID_RESET_V2, VERDICT_VALID_RESET_V3, and VERDICT_VALID_WKC_V1.

Referenced by multi_get_create_instance_udp().

multi_process_io_udp()

static void multi_process_io_udp ( struct multi_context *  m )

static

Definition at line 329 of file mudp.c.

References ASSERT, context::c2, DCO_READ, context_2::event_set_status, context_2::fast_io, FILE_CLOSED, IS_SIG, management_io(), MANAGEMENT_READ, MANAGEMENT_WRITE, MPP_CLOSE_ON_SIGNAL, MPP_CONDITIONAL_PRE_SELECT, MPP_PRE_SELECT, multi_process_incoming_dco(), multi_process_incoming_link(), multi_process_incoming_tun(), multi_process_outgoing_link(), multi_process_outgoing_tun(), read_incoming_link(), read_incoming_tun(), SOCKET_READ, SOCKET_WRITE, status, multi_context::top, TUN_READ, and TUN_WRITE.

Referenced by tunnel_server_udp().

multi_process_outgoing_link()

static void multi_process_outgoing_link ( struct multi_context *  m, const unsigned int  mpp_flags  )

inlinestatic

Definition at line 308 of file mudp.c.

References context::c2, multi_context::hmac_reply, multi_context::hmac_reply_dest, buffer::len, msg_set_prefix(), multi_process_outgoing_link_dowork(), multi_process_outgoing_link_pre(), process_outgoing_link(), context_2::to_link, context_2::to_link_addr, and multi_context::top.

Referenced by multi_process_io_udp().

p2mp_iow_flags()

static unsigned int p2mp_iow_flags ( const struct multi_context *  m )

inlinestatic

Definition at line 425 of file mudp.c.

References context::c1, multi_instance::context, multi_context::hmac_reply_dest, IOW_MBUF, IOW_READ, IOW_READ_TUN, IOW_TO_LINK, IOW_TO_TUN, IOW_WAIT_SIGNAL, LINK_OUT, multi_context::mbuf, mbuf_defined(), multi_context::pending, multi_context::top, TUN_OUT, context_1::tuntap, and tuntap_ring_empty().

Referenced by tunnel_server_udp().

send_hmac_reset_packet()

static void send_hmac_reset_packet ( struct multi_context *  m, struct tls_pre_decrypt_state *  state, struct tls_auth_standalone *  tas, struct session_id *  sid, bool  request_resend_wkc  )

static

Definition at line 42 of file mudp.c.

References context_buffers::aux_buf, buf_copy(), buf_reset_len(), context_2::buffers, context::c2, D_MULTI_DEBUG, context_2::from, multi_context::hmac_reply, multi_context::hmac_reply_dest, packet_id_rec::initialized, msg, tls_wrap_ctx::opt, P_CONTROL_HARD_RESET_SERVER_V2, P_OPCODE_SHIFT, crypto_options::packet_id, tls_pre_decrypt_state::peer_session_id, packet_id::rec, reset_packet_id_send(), packet_id::send, tls_reset_standalone(), tls_pre_decrypt_state::tls_wrap_tmp, and multi_context::top.

Referenced by do_pre_decrypt_check().