multi.c File Reference

#include "syshead.h"
#include "forward.h"
#include "multi.h"
#include "push.h"
#include "run_command.h"
#include "otime.h"
#include "gremlin.h"
#include "ssl_verify.h"
#include "ssl_ncp.h"
#include "vlan.h"
#include "auth_token.h"
#include "route.h"
#include <inttypes.h>
#include <string.h>
#include "memdbg.h"
#include "crypto_backend.h"
#include "ssl_util.h"
#include "dco.h"
#include "reflect_filter.h"

Include dependency graph for multi.c:

Go to the source code of this file.

Typedefs
typedef enum client_connect_return(*	multi_client_connect_handler) (struct multi_context *m, struct multi_instance *mi, bool from_deferred, uint64_t *option_types_found)

Functions
static void	set_cc_config (struct multi_instance *mi, struct buffer_list *cc_config)
static bool	learn_address_script (const struct multi_context *m, const struct multi_instance *mi, const char *op, const struct mroute_addr *addr)
void	multi_ifconfig_pool_persist (struct multi_context *m, bool force)
static void	multi_reap_range (const struct multi_context *m, uint32_t start_bucket, uint32_t end_bucket)
static void	multi_reap_all (const struct multi_context *m)
static struct multi_reap *	multi_reap_new (uint32_t buckets_per_pass)
void	multi_reap_process_dowork (const struct multi_context *m)
static void	multi_reap_free (struct multi_reap *mr)
static uint32_t	reap_buckets_per_pass (uint32_t n_buckets)
static uint64_t	cid_hash_function (const void *key, const uint8_t hash_key[HASH_KEY_LEN])
static bool	cid_compare_function (const void *key1, const void *key2)
static void	multi_init (struct context *t)
const char *	multi_instance_string (const struct multi_instance *mi, bool null, struct gc_arena *gc)
static void	generate_prefix (struct multi_instance *mi)
void	ungenerate_prefix (struct multi_instance *mi)
static void	multi_del_iroutes (struct multi_context *m, struct multi_instance *mi)
static void	setenv_stats (struct multi_context *m, struct context *c)
static void	multi_client_disconnect_setenv (struct multi_context *m, struct multi_instance *mi)
static void	multi_client_disconnect_script (struct multi_context *m, struct multi_instance *mi)
void	multi_close_instance (struct multi_context *m, struct multi_instance *mi, bool shutdown)
static void	multi_uninit (struct multi_context *m)
struct multi_instance *	multi_create_instance (struct multi_context *m, const struct mroute_addr *real, struct link_socket *sock)
static void	multi_print_status (struct multi_context *m, struct status_output *so, const int version)
static struct multi_instance *	multi_learn_addr (struct multi_context *m, struct multi_instance *mi, const struct mroute_addr *addr, const unsigned int flags)
static struct multi_instance *	multi_get_instance_by_virtual_addr (struct multi_context *m, const struct mroute_addr *addr, bool cidr_routing)
static struct multi_instance *	multi_learn_in_addr_t (struct multi_context *m, struct multi_instance *mi, in_addr_t a, int netbits, bool primary)
static struct multi_instance *	multi_learn_in6_addr (struct multi_context *m, struct multi_instance *mi, struct in6_addr a6, int netbits, bool primary)
static void	multi_add_iroutes (struct multi_context *m, struct multi_instance *mi)
static void	multi_delete_dup (struct multi_context *m, struct multi_instance *new_mi)
static void	check_stale_routes (struct multi_context *m)
static bool	ifconfig_push_constraint_satisfied (const struct context *c)
static void	multi_select_virtual_addr (struct multi_context *m, struct multi_instance *mi)
static void	multi_set_virtual_addr_env (struct multi_instance *mi)
static void	multi_client_connect_post (struct multi_context *m, struct multi_instance *mi, const char *dc_file, uint64_t *option_types_found)
static void	multi_client_connect_post_plugin (struct multi_context *m, struct multi_instance *mi, const struct plugin_return *pr, uint64_t *option_types_found)
enum client_connect_return	multi_client_connect_mda (struct multi_context *m, struct multi_instance *mi, bool deferred, uint64_t *option_types_found)
static void	multi_client_connect_setenv (struct multi_instance *mi)
static bool	multi_client_set_protocol_options (struct context *c)
	Calculates the options that depend on the client capabilities based on local options and available peer info.
static void	ccs_delete_deferred_ret_file (struct multi_instance *mi)
	Delete the temporary file for the return value of client connect It also removes it from client_connect_defer_state and environment.
static bool	ccs_gen_deferred_ret_file (struct multi_instance *mi)
	Create a temporary file for the return value of client connect and puts it into the client_connect_defer_state and environment as "client_connect_deferred_file".
static enum client_connect_return	ccs_test_deferred_ret_file (struct multi_instance *mi)
	Tests whether the deferred return value file exists and returns the contained return value.
static void	ccs_delete_config_file (struct multi_instance *mi)
	Deletes the temporary file for the config directives of the client connect script and removes it into the client_connect_defer_state and environment.
static bool	ccs_gen_config_file (struct multi_instance *mi)
	Create a temporary file for the config directives of the client connect script and puts it into the client_connect_defer_state and environment as "client_connect_config_file".
static enum client_connect_return	multi_client_connect_call_plugin_v1 (struct multi_context *m, struct multi_instance *mi, bool deferred, uint64_t *option_types_found)
static enum client_connect_return	multi_client_connect_call_plugin_v2 (struct multi_context *m, struct multi_instance *mi, bool deferred, uint64_t *option_types_found)
static enum client_connect_return	multi_client_connect_script_deferred (struct multi_context *m, struct multi_instance *mi, uint64_t *option_types_found)
static enum client_connect_return	multi_client_connect_call_script (struct multi_context *m, struct multi_instance *mi, bool deferred, uint64_t *option_types_found)
	Runs the –client-connect script if one is defined.
static bool	multi_client_setup_dco_initial (struct multi_context *m, struct multi_instance *mi, struct gc_arena *gc)
static bool	multi_client_generate_tls_keys (struct context *c)
	Generates the data channel keys.
static void	multi_client_connect_late_setup (struct multi_context *m, struct multi_instance *mi, const uint64_t option_types_found)
static void	multi_client_connect_early_setup (struct multi_context *m, struct multi_instance *mi)
static enum client_connect_return	multi_client_connect_compress_migrate (struct multi_context *m, struct multi_instance *mi, bool deferred, uint64_t *option_types_found)
	Do the necessary modification for doing the compress migrate.
static enum client_connect_return	multi_client_connect_source_ccd (struct multi_context *m, struct multi_instance *mi, bool deferred, uint64_t *option_types_found)
	Try to source a dynamic config file from the –client-config-dir directory.
static bool	override_locked_username (struct multi_instance *mi)
	Overrides the locked username with the username of –override-username.
static void	multi_connection_established (struct multi_context *m, struct multi_instance *mi)
void	multi_add_mbuf (struct multi_context *m, struct multi_instance *mi, struct mbuf_buffer *mb)
static void	multi_unicast (struct multi_context *m, const struct buffer *buf, struct multi_instance *mi)
static void	multi_bcast (struct multi_context *m, const struct buffer *buf, const struct multi_instance *sender_instance, uint16_t vid)
static unsigned int	compute_wakeup_sigma (const struct timeval *delta)
static void	multi_schedule_context_wakeup (struct multi_context *m, struct multi_instance *mi)
bool	multi_process_post (struct multi_context *m, struct multi_instance *mi, const unsigned int flags)
	Perform postprocessing of a VPN tunnel instance.
static bool	multi_check_dest_addr_allowed (struct multi_context *m, struct multi_instance *mi, struct mroute_addr *real)
	This methods checks if a client instance is allowed to use an address.
static void	multi_process_float (struct multi_context *m, struct multi_instance *mi, struct link_socket *sock)
	Handles peer floating.
void	multi_close_instance_on_signal (struct multi_context *m, struct multi_instance *mi)
static void	multi_signal_instance (struct multi_context *m, struct multi_instance *mi, const int sig)
static void	multi_process_incoming_link_data (struct multi_context *m, bool floated, struct link_socket *sock)
	Process incoming data packet from clients.
bool	multi_process_incoming_link (struct multi_context *m, struct multi_instance *instance, const unsigned int mpp_flags, struct link_socket *sock)
	Demultiplex and process a packet received over the external network interface.
bool	multi_process_incoming_tun (struct multi_context *m, const unsigned int mpp_flags)
	Determine the destination VPN tunnel of a packet received over the virtual tun/tap network interface and then process it accordingly.
struct multi_instance *	multi_get_queue (struct mbuf_set *ms)
bool	multi_process_timeout (struct multi_context *m, const unsigned int mpp_flags)
void	multi_process_drop_outgoing_tun (struct multi_context *m, const unsigned int mpp_flags)
void	route_quota_exceeded (const struct multi_instance *mi)
static bool	stale_route_check_trigger (struct multi_context *m)
void	multi_process_per_second_timers_dowork (struct multi_context *m)
static void	multi_top_init (struct context *top)
static void	multi_top_free (struct multi_context *m)
static bool	is_exit_restart (int sig)
static void	multi_push_restart_schedule_exit (struct multi_context *m, bool next_server)
bool	multi_process_signal (struct multi_context *m)
static void	management_callback_status (void *arg, const int version, struct status_output *so)
static int	management_callback_n_clients (void *arg)
static int	management_callback_kill_by_cn (void *arg, const char *del_cn)
static int	management_callback_kill_by_addr (void *arg, const in_addr_t addr, const uint16_t port, const uint8_t proto)
static void	management_delete_event (void *arg, event_t event)
struct multi_instance *	lookup_by_cid (struct multi_context *m, const unsigned long cid)
static bool	management_kill_by_cid (void *arg, const unsigned long cid, const char *kill_msg)
static struct tls_session *	lookup_session_by_mda_key_id (struct tls_multi *multi, const unsigned int mda_key_id)
static bool	management_client_pending_auth (void *arg, const unsigned long cid, const unsigned int mda_key_id, const char *extra, unsigned int timeout)
static bool	management_client_auth (void *arg, const unsigned long cid, const unsigned int mda_key_id, const bool auth, const char *reason, const char *client_reason, struct buffer_list *cc_config)
static char *	management_get_peer_info (void *arg, const unsigned long cid)
void	init_management_callback_multi (struct multi_context *m)
void	multi_assign_peer_id (struct multi_context *m, struct multi_instance *mi)
	Assigns a peer-id to a a client and adds the instance to the the instances array of the multi_context structure.
static void	multi_get_timeout (struct multi_context *multi, struct timeval *timeval)
	Determines the earliest wakeup interval based on periodic operations.
static void	tunnel_server_loop (struct multi_context *multi)
	Main event loop for OpenVPN in point-to-multipoint server mode.
void	tunnel_server (struct context *top)
	Main event loop for OpenVPN in server mode.
static void	multi_unlearn_addr (struct multi_context *m, struct multi_instance *mi, const struct mroute_addr *addr)
static void	multi_unlearn_in_addr_t (struct multi_context *m, struct multi_instance *mi, in_addr_t a)
static void	multi_unlearn_in6_addr (struct multi_context *m, struct multi_instance *mi, struct in6_addr a6)
void	unlearn_ifconfig (struct multi_context *m, struct multi_instance *mi)
void	unlearn_ifconfig_ipv6 (struct multi_context *m, struct multi_instance *mi)
void	update_vhash (struct multi_context *m, struct multi_instance *mi, const char *new_ip, const char *new_ipv6)
	Update the vhash with new IP/IPv6 addresses in the multi_context when a push-update message containing ifconfig/ifconfig-ipv6 options is sent from the server.
bool	multi_check_push_ifconfig_extra_route (struct multi_instance *mi, in_addr_t dest)
	Determines if the ifconfig_push_local address falls into the range of the local IP addresses of the VPN interface (ifconfig_local with ifconfig_remote_netmask)
bool	multi_check_push_ifconfig_ipv6_extra_route (struct multi_instance *mi, struct in6_addr *dest)
	Determines if the ifconfig_ipv6_local address falls into the range of the local IP addresses of the VPN interface (ifconfig_local with ifconfig_remote_netmask)

Variables
static const multi_client_connect_handler	client_connect_handlers []

Typedef Documentation

multi_client_connect_handler

typedef enum client_connect_return(* multi_client_connect_handler) (struct multi_context *m, struct multi_instance *mi, bool from_deferred, uint64_t *option_types_found)

Definition at line 2498 of file multi.c.

Function Documentation

ccs_delete_config_file()

static void ccs_delete_config_file ( struct multi_instance *  mi )

static

Deletes the temporary file for the config directives of the client connect script and removes it into the client_connect_defer_state and environment.

Definition at line 1975 of file multi.c.

References context::c2, multi_instance::client_connect_defer_state, client_connect_defer_state::config_file, multi_instance::context, D_MULTI_ERRORS, context_2::es, msg, platform_unlink(), and setenv_del().

Referenced by ccs_gen_config_file(), multi_client_connect_call_plugin_v1(), multi_client_connect_call_script(), and multi_client_connect_script_deferred().

ccs_delete_deferred_ret_file()

static void ccs_delete_deferred_ret_file ( struct multi_instance *  mi )

static

Delete the temporary file for the return value of client connect It also removes it from client_connect_defer_state and environment.

Definition at line 1868 of file multi.c.

References context::c2, multi_instance::client_connect_defer_state, multi_instance::context, D_MULTI_ERRORS, client_connect_defer_state::deferred_ret_file, context_2::es, msg, platform_unlink(), and setenv_del().

Referenced by ccs_gen_deferred_ret_file(), multi_client_connect_call_plugin_v1(), multi_client_connect_call_script(), and multi_client_connect_script_deferred().

ccs_gen_config_file()

static bool ccs_gen_config_file ( struct multi_instance *  mi )

static

Create a temporary file for the config directives of the client connect script and puts it into the client_connect_defer_state and environment as "client_connect_config_file".

Returns

boolean value if creation was successful

Definition at line 1998 of file multi.c.

References context::c2, ccs_delete_config_file(), multi_instance::client_connect_defer_state, client_connect_defer_state::config_file, multi_instance::context, context_2::es, gc, gc_free(), gc_new(), context::options, platform_create_temp_file(), setenv_str(), string_alloc(), and options::tmp_dir.

Referenced by multi_client_connect_call_plugin_v1(), and multi_client_connect_call_script().

ccs_gen_deferred_ret_file()

static bool ccs_gen_deferred_ret_file ( struct multi_instance *  mi )

static

Create a temporary file for the return value of client connect and puts it into the client_connect_defer_state and environment as "client_connect_deferred_file".

Returns

boolean value if creation was successful

Definition at line 1893 of file multi.c.

References context::c2, ccs_delete_deferred_ret_file(), multi_instance::client_connect_defer_state, multi_instance::context, client_connect_defer_state::deferred_ret_file, context_2::es, gc, gc_free(), gc_new(), context::options, platform_create_temp_file(), setenv_str(), string_alloc(), and options::tmp_dir.

Referenced by multi_client_connect_call_plugin_v1(), and multi_client_connect_call_script().

ccs_test_deferred_ret_file()

static enum client_connect_return ccs_test_deferred_ret_file ( struct multi_instance *  mi )

static

Tests whether the deferred return value file exists and returns the contained return value.

Returns

CC_RET_SKIPPED if the file does not exist or is empty. CC_RET_DEFERRED, CC_RET_SUCCEEDED or CC_RET_FAILED depending on the value stored in the file.

Definition at line 1925 of file multi.c.

References CC_RET_DEFERRED, CC_RET_FAILED, CC_RET_SKIPPED, CC_RET_SUCCEEDED, multi_instance::client_connect_defer_state, client_connect_defer_state::deferred_ret_file, M_WARN, and msg.

Referenced by multi_client_connect_call_plugin_v1(), multi_client_connect_call_script(), and multi_client_connect_script_deferred().

check_stale_routes()

static void check_stale_routes ( struct multi_context *  m )

static

Definition at line 1351 of file multi.c.

References multi_route::addr, D_MULTI_DEBUG, dmsg, multi_route::flags, gc, gc_free(), gc_new(), hash_iterator_delete_element(), hash_iterator_free(), hash_iterator_init_range(), hash_iterator_next(), hash_n_buckets(), multi_route::last_reference, learn_address_script(), mroute_addr_print(), multi_route_defined(), multi_route_del(), MULTI_ROUTE_PERMANENT, now, context::options, options::stale_routes_ageing_time, multi_context::top, hash_element::value, and multi_context::vhash.

Referenced by multi_process_per_second_timers_dowork().

cid_compare_function()

static bool cid_compare_function ( const void *  key1, const void *  key2  )

static

Definition at line 239 of file multi.c.

Referenced by multi_init().

cid_hash_function()

static uint64_t cid_hash_function ( const void *  key, const uint8_t  hash_key[HASH_KEY_LEN]  )

static

Definition at line 232 of file multi.c.

Referenced by multi_init().

compute_wakeup_sigma()

static unsigned int compute_wakeup_sigma ( const struct timeval *  delta )

inlinestatic

Definition at line 2914 of file multi.c.

References ASSERT.

Referenced by multi_push_restart_schedule_exit(), and multi_schedule_context_wakeup().

generate_prefix()

static void generate_prefix ( struct multi_instance *  mi )

static

Definition at line 448 of file multi.c.

References gc, gc_free(), gc_new(), multi_instance::msg_prefix, multi_instance_string(), set_prefix(), and strncpynt().

Referenced by multi_client_connect_early_setup(), multi_create_instance(), and multi_process_float().

ifconfig_push_constraint_satisfied()

static bool ifconfig_push_constraint_satisfied ( const struct context *  c )

static

Definition at line 1381 of file multi.c.

References context::c2, context::options, options::push_ifconfig_constraint_defined, options::push_ifconfig_constraint_netmask, options::push_ifconfig_constraint_network, context_2::push_ifconfig_defined, and context_2::push_ifconfig_local.

Referenced by multi_client_connect_late_setup().

init_management_callback_multi()

void init_management_callback_multi

(

struct multi_context *

m

)

Definition at line 4118 of file multi.c.

References management_callback::arg, CLEAR, management_callback::client_auth, management_callback::client_pending_auth, management_callback::delete_event, management_callback::flags, management_callback::get_peer_info, management_callback::kill_by_addr, management_callback::kill_by_cid, management_callback::kill_by_cn, management_callback_kill_by_addr(), management_callback_kill_by_cn(), management_callback_n_clients(), management_callback_send_push_update_broadcast(), management_callback_send_push_update_by_cid(), management_callback_status(), management_client_auth(), management_client_pending_auth(), management_delete_event(), management_get_peer_info(), management_kill_by_cid(), management_set_callback(), management_show_net_callback(), MCF_SERVER, management_callback::n_clients, management_callback::push_update_broadcast, management_callback::push_update_by_cid, management_callback::show_net, and management_callback::status.

Referenced by tunnel_server().

is_exit_restart()

static bool is_exit_restart ( int  sig )

static

Definition at line 3841 of file multi.c.

References SIGHUP, SIGINT, SIGTERM, and SIGUSR1.

Referenced by multi_process_signal().

learn_address_script()

static bool learn_address_script ( const struct multi_context *  m, const struct multi_instance *  mi, const char *  op, const struct mroute_addr *  addr  )

static

Definition at line 83 of file multi.c.

References argv_free(), argv_new(), argv_parse_cmd(), argv_printf(), argv_printf_cat(), context::c2, multi_instance::context, env_set_create(), context_2::es, es, gc, gc_free(), gc_new(), options::learn_address_script, M_WARN, mroute_addr_print(), msg, OPENVPN_PLUGIN_FUNC_SUCCESS, OPENVPN_PLUGIN_LEARN_ADDRESS, openvpn_run_script(), context::options, plugin_call(), plugin_defined(), context::plugins, setenv_str(), tls_common_name(), context_2::tls_multi, and multi_context::top.

Referenced by check_stale_routes(), multi_learn_addr(), multi_reap_range(), multi_unlearn_addr(), options_postprocess_verify_ce(), and show_p2mp_parms().

lookup_by_cid()

struct multi_instance * lookup_by_cid	(	struct multi_context *	m,
		const unsigned long	cid
	)

Definition at line 3987 of file multi.c.

References multi_context::cid_hash, multi_instance::halt, and hash_lookup().

Referenced by management_client_auth(), management_client_pending_auth(), management_get_peer_info(), management_kill_by_cid(), and send_push_update().

lookup_session_by_mda_key_id()

static struct tls_session * lookup_session_by_mda_key_id ( struct tls_multi *  multi, const unsigned int  mda_key_id  )

static

Definition at line 4018 of file multi.c.

References tls_session::key, KS_PRIMARY, key_state::mda_key_id, tls_multi::session, TM_ACTIVE, and TM_INITIAL.

Referenced by management_client_pending_auth().

management_callback_kill_by_addr()

static int management_callback_kill_by_addr ( void *  arg, const in_addr_t  addr, const uint16_t  port, const uint8_t  proto  )

static

Definition at line 3949 of file multi.c.

References mroute_addr::addr, openvpn_sockaddr::addr, CLEAR, multi_instance::halt, openvpn_sockaddr::in4, multi_context::instances, mroute_addr::len, mroute_addr_equal(), mroute_extract_openvpn_sockaddr(), multi_signal_instance(), mroute_addr::port, mroute_addr::proto, multi_instance::real, and SIGTERM.

Referenced by init_management_callback_multi().

management_callback_kill_by_cn()

static int management_callback_kill_by_cn ( void *  arg, const char *  del_cn  )

static

Definition at line 3927 of file multi.c.

References context::c2, multi_instance::context, multi_instance::halt, multi_context::instances, multi_context::max_peerid, multi_signal_instance(), SIGTERM, tls_common_name(), and context_2::tls_multi.

Referenced by init_management_callback_multi().

management_callback_n_clients()

static int management_callback_n_clients ( void *  arg )

static

Definition at line 3920 of file multi.c.

References multi_context::n_clients.

Referenced by init_management_callback_multi().

management_callback_status()

static void management_callback_status ( void *  arg, const int  version, struct status_output *  so  )

static

Definition at line 3905 of file multi.c.

References multi_print_status(), and multi_context::status_file_version.

Referenced by init_management_callback_multi().

management_client_auth()

static bool management_client_auth ( void *  arg, const unsigned long  cid, const unsigned int  mda_key_id, const bool  auth, const char *  reason, const char *  client_reason, struct buffer_list *  cc_config  )

static

Definition at line 4063 of file multi.c.

References buffer_list_free(), context::c2, CAS_WAITING_AUTH, multi_instance::cc_config, multi_instance::context, D_MULTI_LOW, lookup_by_cid(), msg, tls_multi::multi_state, np(), set_cc_config(), tls_authenticate_key(), and context_2::tls_multi.

Referenced by init_management_callback_multi().

management_client_pending_auth()

static bool management_client_pending_auth ( void *  arg, const unsigned long  cid, const unsigned int  mda_key_id, const char *  extra, unsigned int  timeout  )

static

Definition at line 4036 of file multi.c.

References context::c2, multi_instance::context, lookup_by_cid(), lookup_session_by_mda_key_id(), multi_schedule_context_wakeup(), reschedule_multi_process(), send_auth_pending_messages(), and context_2::tls_multi.

Referenced by init_management_callback_multi().

management_delete_event()

static void management_delete_event ( void *  arg, event_t  event  )

static

Definition at line 3977 of file multi.c.

References multi_context::multi_io, and multi_tcp_delete_event().

Referenced by init_management_callback_multi().

management_get_peer_info()

static char * management_get_peer_info ( void *  arg, const unsigned long  cid  )

static

Definition at line 4100 of file multi.c.

References context::c2, multi_instance::context, lookup_by_cid(), tls_multi::peer_info, and context_2::tls_multi.

Referenced by init_management_callback_multi().

management_kill_by_cid()

static bool management_kill_by_cid ( void *  arg, const unsigned long  cid, const char *  kill_msg  )

static

Definition at line 4001 of file multi.c.

References multi_instance::context, lookup_by_cid(), multi_schedule_context_wakeup(), and send_restart().

Referenced by init_management_callback_multi().

multi_add_iroutes()

static void multi_add_iroutes ( struct multi_context *  m, struct multi_instance *  mi  )

static

Definition at line 1272 of file multi.c.

References context::c1, multi_instance::context, D_MULTI_LOW, DEV_TYPE_TUN, multi_instance::did_iroutes, gc, gc_free(), gc_new(), options::iroutes, options::iroutes_ipv6, mroute_helper_add_iroute46(), msg, multi_instance_string(), multi_learn_in6_addr(), multi_learn_in_addr_t(), iroute::netbits, iroute_ipv6::netbits, iroute::network, iroute_ipv6::network, iroute::next, iroute_ipv6::next, context::options, print_in6_addr(), print_in_addr_t(), multi_context::route_helper, TUNNEL_TYPE, and context_1::tuntap.

Referenced by multi_client_connect_late_setup().

multi_add_mbuf()

void multi_add_mbuf	(	struct multi_context *	m,
		struct multi_instance *	mi,
		struct mbuf_buffer *	mb
	)

Definition at line 2837 of file multi.c.

References mbuf_item::buffer, D_MULTI_DROPPED, mbuf_item::instance, multi_context::mbuf, mbuf_add_item(), msg, and multi_output_queue_ready().

Referenced by multi_bcast(), and multi_unicast().

multi_assign_peer_id()

void multi_assign_peer_id	(	struct multi_context *	m,
		struct multi_instance *	mi
	)

Assigns a peer-id to a a client and adds the instance to the the instances array of the multi_context structure.

Parameters

m	- The single multi_context structure.
mi	- The multi_instance of the VPN tunnel to be postprocessed.

Definition at line 4145 of file multi.c.

References ASSERT, context::c2, multi_instance::context, multi_context::instances, multi_context::max_clients, MAX_PEER_ID, multi_context::max_peerid, tls_multi::rx_peer_id, and context_2::tls_multi.

Referenced by handle_connection_attempt(), and multi_create_instance_tcp().

multi_bcast()

static void multi_bcast ( struct multi_context *  m, const struct buffer *  buf, const struct multi_instance *  sender_instance, uint16_t  vid  )

static

Definition at line 2873 of file multi.c.

References BLEN, mbuf_buffer::buf, multi_instance::context, multi_instance::halt, multi_context::instances, multi_context::max_peerid, mbuf_alloc_buf(), mbuf_free_buf(), multi_add_mbuf(), context::options, and options::vlan_pvid.

Referenced by multi_process_incoming_link_data(), and multi_process_incoming_tun().

multi_check_dest_addr_allowed()

static bool multi_check_dest_addr_allowed ( struct multi_context *  m, struct multi_instance *  mi, struct mroute_addr *  real  )

static

This methods checks if a client instance is allowed to use an address.

Reasons for disallowing a specific address are that a client might be already using that address. In that case the method needs to decide if this instance can kick out the other instance.

The method will then terminate the other instance if that check was positive.

Definition at line 3081 of file multi.c.

References context_2::buf, context::c2, cert_hash_compare(), multi_instance::context, D_MULTI_LOW, gc, gc_free(), gc_new(), multi_context::hash, hash_lookup_fast(), hash_value(), buffer::len, tls_multi::locked_cert_hash_set, tls_multi::locked_username, M_WARN, mroute_addr_print(), msg, multi_close_instance(), multi_instance_string(), multi_instance::real, tls_multi::rx_peer_id, tls_common_name(), context_2::tls_multi, and hash_element::value.

Referenced by multi_process_float().

multi_check_push_ifconfig_extra_route()

bool multi_check_push_ifconfig_extra_route	(	struct multi_instance *	mi,
		in_addr_t	dest
	)

Determines if the ifconfig_push_local address falls into the range of the local IP addresses of the VPN interface (ifconfig_local with ifconfig_remote_netmask)

Parameters

mi	The multi-instance to check this condition for
dest	The destination IP address to check

Returns

Returns true if ifconfig_push is outside that range and requires an extra route to be installed.

Definition at line 4441 of file multi.c.

References multi_instance::context, options::ifconfig_local, options::ifconfig_remote_netmask, and context::options.

Referenced by multi_learn_in_addr_t().

multi_check_push_ifconfig_ipv6_extra_route()

bool multi_check_push_ifconfig_ipv6_extra_route	(	struct multi_instance *	mi,
		struct in6_addr *	dest
	)

Determines if the ifconfig_ipv6_local address falls into the range of the local IP addresses of the VPN interface (ifconfig_local with ifconfig_remote_netmask)

Parameters

mi	The multi-instance to check this condition for
dest	The destination IPv6 address to check

Returns

Returns true if ifconfig_push is outside that range and requires an extra route to be installed.

Definition at line 4462 of file multi.c.

References multi_instance::context, options::ifconfig_ipv6_local, options::ifconfig_ipv6_netbits, ipv6_net_contains_host(), and context::options.

Referenced by multi_learn_in6_addr().

multi_client_connect_call_plugin_v1()

static enum client_connect_return multi_client_connect_call_plugin_v1 ( struct multi_context *  m, struct multi_instance *  mi, bool  deferred, uint64_t *  option_types_found  )

static

Contrary to the plugin v2 API, we do not demand a working deferred plugin as all return can be handled by the files and plugin_call return success if a plugin is not defined

plugin api v1 client connect async feature has both plugin and file return status, so in cases where the file has a code that demands override, we override our return code

Definition at line 2024 of file multi.c.

References argv_free(), argv_new(), argv_printf(), ASSERT, context::c2, CC_RET_DEFERRED, CC_RET_FAILED, CC_RET_SKIPPED, CC_RET_SUCCEEDED, ccs_delete_config_file(), ccs_delete_deferred_ret_file(), ccs_gen_config_file(), ccs_gen_deferred_ret_file(), ccs_test_deferred_ret_file(), cleanup(), multi_instance::client_connect_defer_state, client_connect_defer_state::config_file, multi_instance::context, client_connect_defer_state::deferred_ret_file, context_2::es, M_WARN, msg, multi_client_connect_post(), OPENVPN_PLUGIN_CLIENT_CONNECT, OPENVPN_PLUGIN_CLIENT_CONNECT_DEFER, OPENVPN_PLUGIN_FUNC_DEFERRED, OPENVPN_PLUGIN_FUNC_SUCCESS, plugin_call(), plugin_defined(), and context::plugins.

multi_client_connect_call_plugin_v2()

static enum client_connect_return multi_client_connect_call_plugin_v2 ( struct multi_context *  m, struct multi_instance *  mi, bool  deferred, uint64_t *  option_types_found  )

static

Definition at line 2114 of file multi.c.

References ASSERT, context::c2, CC_RET_DEFERRED, CC_RET_FAILED, CC_RET_SKIPPED, CC_RET_SUCCEEDED, multi_instance::context, context_2::es, M_WARN, msg, multi_client_connect_post_plugin(), OPENVPN_PLUGIN_CLIENT_CONNECT_DEFER_V2, OPENVPN_PLUGIN_CLIENT_CONNECT_V2, OPENVPN_PLUGIN_FUNC_DEFERRED, OPENVPN_PLUGIN_FUNC_SUCCESS, plugin_call(), plugin_defined(), plugin_return_free(), plugin_return_init(), and context::plugins.

multi_client_connect_call_script()

static enum client_connect_return multi_client_connect_call_script ( struct multi_context *  m, struct multi_instance *  mi, bool  deferred, uint64_t *  option_types_found  )

static

Runs the –client-connect script if one is defined.

Definition at line 2204 of file multi.c.

References argv_free(), argv_new(), argv_parse_cmd(), argv_printf_cat(), ASSERT, context::c2, CC_RET_DEFERRED, CC_RET_FAILED, CC_RET_SKIPPED, CC_RET_SUCCEEDED, ccs_delete_config_file(), ccs_delete_deferred_ret_file(), ccs_gen_config_file(), ccs_gen_deferred_ret_file(), ccs_test_deferred_ret_file(), cleanup(), multi_instance::client_connect_defer_state, options::client_connect_script, client_connect_defer_state::config_file, multi_instance::context, context_2::es, gc, gc_free(), gc_new(), multi_client_connect_post(), multi_client_connect_script_deferred(), openvpn_run_script(), client_connect_defer_state::option_types_found, context::options, and setenv_str().

multi_client_connect_compress_migrate()

static enum client_connect_return multi_client_connect_compress_migrate ( struct multi_context *  m, struct multi_instance *  mi, bool  deferred, uint64_t *  option_types_found  )

static

Do the necessary modification for doing the compress migrate.

This is implemented as a connect handler as it fits the modify config for a client paradigm and also is early enough in the chain to be overwritten by another ccd/script to do compression on a special client.

Definition at line 2466 of file multi.c.

References compress_options::alg, context::c2, CC_RET_SUCCEEDED, options::comp, COMP_ALG_STUB, COMP_F_MIGRATE, multi_instance::context, compress_options::flags, M_USAGE, OPT_P_COMP, context::options, tls_multi::peer_info, push_option(), tls_multi::remote_usescomp, and context_2::tls_multi.

multi_client_connect_early_setup()

static void multi_client_connect_early_setup ( struct multi_context *  m, struct multi_instance *  mi  )

static

Definition at line 2431 of file multi.c.

References ASSERT, context::c1, context::c2, multi_instance::context, options::duplicate_cn, generate_prefix(), multi_client_connect_setenv(), multi_delete_dup(), multi_select_virtual_addr(), context::options, tls_lock_cert_hash_set(), tls_lock_common_name(), context_2::tls_multi, context_1::tuntap, and multi_instance::vaddr_handle.

Referenced by multi_connection_established().

multi_client_connect_late_setup()

static void multi_client_connect_late_setup ( struct multi_context *  m, struct multi_instance *  mi, const uint64_t  option_types_found  )

static

Definition at line 2308 of file multi.c.

References ASSERT, context::c1, context::c2, CAS_CONNECT_DONE, CAS_FAILED, multi_instance::context, D_MULTI_ERRORS, D_MULTI_LOW, DEV_TYPE_TUN, do_deferred_options(), gc, gc_free(), gc_new(), ifconfig_push_constraint_satisfied(), options::iroutes, msg, multi_add_iroutes(), multi_client_generate_tls_keys(), multi_client_set_protocol_options(), multi_client_setup_dco_initial(), multi_instance_string(), multi_learn_in6_addr(), multi_learn_in_addr_t(), tls_multi::multi_state, context::options, print_in6_addr(), print_in_addr_t(), process_incoming_push_request(), options::push_ifconfig_constraint_netmask, options::push_ifconfig_constraint_network, context_2::push_ifconfig_defined, context_2::push_ifconfig_ipv6_defined, context_2::push_ifconfig_ipv6_local, context_2::push_ifconfig_local, context_2::push_request_received, remove_iroutes_from_push_route_list(), multi_instance::reporting_addr, multi_instance::reporting_addr_ipv6, context_2::tls_multi, TUNNEL_TYPE, and context_1::tuntap.

Referenced by multi_connection_established().

multi_client_connect_mda()

enum client_connect_return multi_client_connect_mda	(	struct multi_context *	m,
		struct multi_instance *	mi,
		bool	deferred,
		uint64_t *	option_types_found
	)

Definition at line 1653 of file multi.c.

References ASSERT, BSTR, buffer_entry::buf, context::c2, multi_instance::cc_config, CC_RET_SKIPPED, CC_RET_SUCCEEDED, CLIENT_CONNECT_OPT_MASK, multi_instance::context, D_IMPORT_ERRORS, context_2::es, buffer_list::head, M_OPTERR, multi_select_virtual_addr(), multi_set_virtual_addr_env(), buffer_entry::next, context::options, and options_string_import().

multi_client_connect_post()

static void multi_client_connect_post ( struct multi_context *  m, struct multi_instance *  mi, const char *  dc_file, uint64_t *  option_types_found  )

static

Definition at line 1588 of file multi.c.

References context::c2, CLIENT_CONNECT_OPT_MASK, multi_instance::context, D_IMPORT_ERRORS, context_2::es, M_OPTERR, multi_select_virtual_addr(), multi_set_virtual_addr_env(), context::options, options_server_import(), and platform_test_file().

Referenced by multi_client_connect_call_plugin_v1(), multi_client_connect_call_script(), and multi_client_connect_script_deferred().

multi_client_connect_post_plugin()

static void multi_client_connect_post_plugin ( struct multi_context *  m, struct multi_instance *  mi, const struct plugin_return *  pr, uint64_t *  option_types_found  )

static

Definition at line 1614 of file multi.c.

References context::c2, CLIENT_CONNECT_OPT_MASK, multi_instance::context, D_IMPORT_ERRORS, context_2::es, plugin_return::list, M_OPTERR, multi_select_virtual_addr(), multi_set_virtual_addr_env(), plugin_return::n, context::options, options_string_import(), plugin_return_defined(), plugin_return_get_column(), and openvpn_plugin_string_list::value.

Referenced by multi_client_connect_call_plugin_v2().

multi_client_connect_script_deferred()

static enum client_connect_return multi_client_connect_script_deferred ( struct multi_context *  m, struct multi_instance *  mi, uint64_t *  option_types_found  )

static

Definition at line 2163 of file multi.c.

References ASSERT, CC_RET_DEFERRED, CC_RET_FAILED, CC_RET_SKIPPED, CC_RET_SUCCEEDED, ccs_delete_config_file(), ccs_delete_deferred_ret_file(), ccs_test_deferred_ret_file(), multi_instance::client_connect_defer_state, client_connect_defer_state::config_file, M_INFO, msg, multi_client_connect_post(), and client_connect_defer_state::option_types_found.

Referenced by multi_client_connect_call_script().

multi_client_connect_setenv()

static void multi_client_connect_setenv ( struct multi_instance *  mi )

static

Definition at line 1686 of file multi.c.

References context::c2, multi_instance::context, multi_instance::created, context_2::es, gc, gc_free(), gc_new(), get_link_socket_info(), multi_set_virtual_addr_env(), setenv_long_long(), setenv_str(), setenv_trusted(), time_string(), tls_common_name(), and context_2::tls_multi.

Referenced by multi_client_connect_early_setup().

multi_client_connect_source_ccd()

static enum client_connect_return multi_client_connect_source_ccd ( struct multi_context *  m, struct multi_instance *  mi, bool  deferred, uint64_t *  option_types_found  )

static

Try to source a dynamic config file from the –client-config-dir directory.

Definition at line 2498 of file multi.c.

multi_client_disconnect_script()

static void multi_client_disconnect_script ( struct multi_context *  m, struct multi_instance *  mi  )

static

Definition at line 527 of file multi.c.

References argv_free(), argv_new(), argv_parse_cmd(), context::c2, options::client_disconnect_script, multi_instance::context, context_2::es, M_WARN, management_notify_client_close(), context_2::mda_context, msg, multi_client_disconnect_setenv(), OPENVPN_PLUGIN_CLIENT_DISCONNECT, OPENVPN_PLUGIN_FUNC_SUCCESS, openvpn_run_script(), context::options, plugin_call(), plugin_defined(), context::plugins, and setenv_str().

Referenced by multi_close_instance(), and multi_connection_established().

multi_client_disconnect_setenv()

static void multi_client_disconnect_setenv ( struct multi_context *  m, struct multi_instance *  mi  )

static

Definition at line 514 of file multi.c.

References context::c2, multi_instance::context, multi_instance::created, context_2::es, get_link_socket_info(), now, setenv_long_long(), setenv_stats(), and setenv_trusted().

Referenced by multi_client_disconnect_script().

multi_client_generate_tls_keys()

static bool multi_client_generate_tls_keys ( struct context *  c )

static

Generates the data channel keys.

Definition at line 2285 of file multi.c.

References context::c1, context::c2, options::ce, D_TLS_ERRORS, tuntap::dco, connection_entry::fragment, context_2::frame, context_2::frame_fragment, get_link_socket_info(), msg, context::options, register_signal(), tls_multi::session, context::sig, SIGUSR1, context_2::tls_multi, tls_session_update_crypto_params(), TM_ACTIVE, and context_1::tuntap.

Referenced by multi_client_connect_late_setup().

multi_client_set_protocol_options()

static bool multi_client_set_protocol_options ( struct context *  c )

static

Calculates the options that depend on the client capabilities based on local options and available peer info.

• choosen cipher
• peer id

Definition at line 1716 of file multi.c.

References auth_set_client_reason(), context::c2, cipher_kt_mode_aead(), options::ciphername, CO_EPOCH_DATA_KEY_FORMAT, CO_USE_CC_EXIT_NOTIFY, CO_USE_DYNAMIC_TLS_CRYPT, CO_USE_TLS_KEY_MATERIAL_EXPORT, tls_options::data_epoch_supported, dco_enabled(), options::enable_ncp_fallback, extract_iv_proto(), options::force_key_material_export, options::gc, gc, gc_free(), gc_new(), get_primary_key(), options::imported_protocol_flags, key_ctx_bi::initialized, IV_PROTO_CC_EXIT_NOTIFY, IV_PROTO_DATA_EPOCH, IV_PROTO_DATA_V2, IV_PROTO_DYN_TLS_CRYPT, IV_PROTO_NCP_P2P, IV_PROTO_REQUEST_PUSH, IV_PROTO_TLS_KEY_EXPORT, crypto_options::key_ctx_bi, M_INFO, M_WARN, msg, options::ncp_ciphers, options::ncp_ciphers_conf, ncp_expanded_ciphers(), ncp_get_best_cipher(), tls_session::opt, context::options, tls_multi::peer_info, context_2::push_request_received, tls_multi::remote_ciphername, tls_multi::session, context_2::tls_multi, tls_peer_ncp_list(), TM_ACTIVE, options::use_peer_id, and tls_multi::use_peer_id.

Referenced by multi_client_connect_late_setup().

multi_client_setup_dco_initial()

static bool multi_client_setup_dco_initial ( struct multi_context *  m, struct multi_instance *  mi, struct gc_arena *  gc  )

static

Definition at line 2262 of file multi.c.

References multi_instance::context, D_DCO, dco_enabled(), dco_multi_add_new_peer(), gc, msg, multi_instance_string(), and context::options.

Referenced by multi_client_connect_late_setup().

multi_close_instance()

void multi_close_instance	(	struct multi_context *	m,
		struct multi_instance *	mi,
		bool	shutdown
	)

Definition at line 558 of file multi.c.

References ASSERT, context::c2, CAS_CONNECT_DONE, CC_GC_FREE, man_def_auth_context::cid, multi_context::cid_hash, close_context(), multi_instance::context, D_MULTI_DEBUG, multi_instance::did_cid_hash, multi_instance::did_real_hash, dmsg, multi_context::earliest_wakeup, multi_instance::halt, multi_context::hash, hash_remove(), multi_context::ifconfig_pool, ifconfig_pool_release(), link_socket::info, multi_context::instances, context_2::link_sockets, MAX_PEER_ID, multi_context::max_peerid, multi_context::mbuf, mbuf_dereference_instance(), context_2::mda_context, multi_client_disconnect_script(), multi_del_iroutes(), multi_instance_dec_refcount(), multi_context::multi_io, multi_set_pending(), tls_multi::multi_state, multi_tcp_dereference_instance(), multi_tcp_instance_specific_free(), multi_context::n_clients, multi_instance::n_clients_delta, multi_context::pending, link_socket_info::proto, proto_is_dgram(), multi_instance::real, tls_multi::rx_peer_id, multi_context::schedule, schedule_remove_entry(), set_cc_config(), SIGTERM, context_2::tls_multi, and ungenerate_prefix().

Referenced by multi_check_dest_addr_allowed(), multi_close_instance_on_signal(), multi_create_instance(), multi_create_instance_tcp(), multi_delete_dup(), and multi_uninit().

multi_close_instance_on_signal()

void multi_close_instance_on_signal	(	struct multi_context *	m,
		struct multi_instance *	mi
	)

Definition at line 3219 of file multi.c.

References clear_prefix(), multi_instance::context, D_MULTI_LOW, multi_close_instance(), print_signal(), remap_signal(), set_prefix(), and context::sig.

Referenced by multi_io_action(), multi_process_post(), and multi_signal_instance().

multi_connection_established()

static void multi_connection_established ( struct multi_context *  m, struct multi_instance *  mi  )

static

Definition at line 2641 of file multi.c.

References ASSERT, context::c2, CAS_FAILED, CAS_PENDING, CAS_PENDING_DEFERRED, CAS_PENDING_DEFERRED_PARTIAL, CC_RET_DEFERRED, CC_RET_FAILED, CC_RET_SKIPPED, CC_RET_SUCCEEDED, check_compression_settings_valid(), multi_instance::client_connect_defer_state, client_connect_handlers, options::comp, multi_instance::context, client_connect_defer_state::cur_handler_index, D_MULTI_ERRORS, dco_check_option(), dco_enabled(), context_2::es, management_connection_established(), context_2::mda_context, msg, multi_client_connect_early_setup(), multi_client_connect_late_setup(), multi_client_disconnect_script(), tls_multi::multi_state, multi_context::n_clients, multi_instance::n_clients_delta, client_connect_defer_state::option_types_found, context::options, override_locked_username(), options::override_username, and context_2::tls_multi.

Referenced by multi_process_post().

multi_create_instance()

struct multi_instance * multi_create_instance	(	struct multi_context *	m,
		const struct mroute_addr *	real,
		struct link_socket *	sock
	)

Definition at line 702 of file multi.c.

References ALLOC_OBJ_CLEAR, context::c2, CAS_NOT_CONNECTED, man_def_auth_context::cid, multi_context::cid_counter, multi_context::cid_hash, multi_instance::context, multi_instance::created, D_MULTI_ERRORS, D_MULTI_MEDIUM, multi_instance::did_cid_hash, multi_instance::ev_arg, EVENT_ARG_MULTI_INSTANCE, multi_instance::gc, gc, gc_free(), gc_new(), generate_prefix(), multi_context::hash, hash_add(), hash_n_elements(), inherit_context_child(), IS_SIG, multi_context::max_clients, context_2::mda_context, event_arg::mi, MPP_PRE_SELECT, mroute_addr_init(), msg, multi_close_instance(), multi_instance_inc_refcount(), multi_process_post(), tls_multi::multi_state, multi_tcp_instance_specific_init(), now, context_2::push_request_received, multi_instance::real, context_2::tls_multi, multi_context::top, event_arg::type, event_arg::u, and multi_instance::vaddr_handle.

Referenced by handle_connection_attempt(), and multi_create_instance_tcp().

multi_del_iroutes()

static void multi_del_iroutes ( struct multi_context *  m, struct multi_instance *  mi  )

static

Definition at line 477 of file multi.c.

References context::c1, multi_instance::context, dco_delete_iroutes(), DEV_TYPE_TUN, options::iroutes, options::iroutes_ipv6, mroute_helper_del_iroute46(), iroute::netbits, iroute_ipv6::netbits, iroute::next, iroute_ipv6::next, context::options, multi_context::route_helper, TUNNEL_TYPE, and context_1::tuntap.

Referenced by multi_close_instance().

multi_delete_dup()

static void multi_delete_dup ( struct multi_context *  m, struct multi_instance *  new_mi  )

static

Definition at line 1317 of file multi.c.

References context::c2, multi_instance::context, D_MULTI_LOW, multi_instance::halt, multi_context::instances, multi_context::max_peerid, msg, multi_close_instance(), tls_common_name(), and context_2::tls_multi.

Referenced by multi_client_connect_early_setup().

multi_get_instance_by_virtual_addr()

static struct multi_instance * multi_get_instance_by_virtual_addr ( struct multi_context *  m, const struct mroute_addr *  addr, bool  cidr_routing  )

static

Definition at line 1099 of file multi.c.

References mroute_addr::addr, multi_route::addr, ASSERT, check_debug_level(), D_MULTI_DEBUG, dmsg, gc, gc_free(), gc_new(), multi_instance::halt, hash_lookup(), mroute_addr::len, multi_context::local, MR_WITH_NETBITS, mroute_addr_equal(), mroute_addr_mask_host_bits(), mroute_addr_print(), multi_instance_string(), multi_learn_addr(), MULTI_ROUTE_AGEABLE, MULTI_ROUTE_CACHE, multi_route_defined(), now, route, multi_context::route_helper, mroute_addr::type, and multi_context::vhash.

Referenced by multi_process_incoming_link_data(), and multi_process_incoming_tun().

multi_get_queue()

struct multi_instance * multi_get_queue

(

struct mbuf_set *

ms

)

Definition at line 3651 of file multi.c.

References mbuf_buffer::buf, context_2::buf, mbuf_item::buffer, context::c2, clear_prefix(), multi_instance::context, D_MULTI_DEBUG, dmsg, encrypt_sign(), mbuf_buffer::flags, mbuf_item::instance, context_2::link_sockets, mbuf_extract_item(), mbuf_free_buf(), MF_UNICAST, PIP_MSSFIX, PIPV4_PASSTOS, PIPV6_ICMP_NOHOST_SERVER, process_ip_header(), and set_prefix().

Referenced by multi_process_outgoing_link_pre().

multi_get_timeout()

static void multi_get_timeout ( struct multi_context *  multi, struct timeval *  timeval  )

static

Determines the earliest wakeup interval based on periodic operations.

Updates the timeval to reflect the next scheduled wakeup time. Also sets multi->earliest_wakeup to the instance with the earliest wakeup.

Parameters

multi	Pointer to the multi context
timeval	Pointer to the timeval structure to be updated with the next wakeup time

Definition at line 4182 of file multi.c.

References management_check_bytecount_server(), and multi_get_timeout_instance().

Referenced by tunnel_server_loop().

multi_ifconfig_pool_persist()

void multi_ifconfig_pool_persist	(	struct multi_context *	m,
		bool	force
	)

Definition at line 150 of file multi.c.

References context::c1, multi_context::ifconfig_pool, context_1::ifconfig_pool_persist, ifconfig_pool_write(), ifconfig_pool_write_trigger(), and multi_context::top.

Referenced by multi_process_per_second_timers_dowork(), and tunnel_server().

multi_init()

static void multi_init ( struct context *  t )

static

Definition at line 269 of file multi.c.

References ASSERT, context::c1, context::c2, options::cf_initial_max, options::cf_initial_per, options::cf_max, options::cf_per, cid_compare_function(), multi_context::cid_hash, cid_hash_function(), CLEAR, D_MULTI_LOW, multi_context::deferred_shutdown_signal, options::dev, options::dev_type, dev_type_enum(), DEV_TYPE_TUN, DEV_TYPE_UNDEF, options::duplicate_cn, multi_context::enable_c2c, options::enable_c2c, context_2::event_set, event_timeout_init(), frequency_limit_init(), multi_context::hash, hash_init(), options::ifconfig_ipv6_pool_base, options::ifconfig_ipv6_pool_defined, options::ifconfig_ipv6_pool_netbits, multi_context::ifconfig_pool, IFCONFIG_POOL_30NET, options::ifconfig_pool_defined, options::ifconfig_pool_end, IFCONFIG_POOL_INDIV, ifconfig_pool_init(), context_1::ifconfig_pool_persist, ifconfig_pool_read(), options::ifconfig_pool_start, initial_rate_limit_init(), multi_context::initial_rate_limiter, multi_context::instances, multi_context::local, tuntap::local, M_INFO, multi_context::max_clients, options::max_clients, multi_context::mbuf, mbuf_init(), mroute_addr_compare_function(), mroute_addr_hash_function(), mroute_extract_in_addr_t(), mroute_helper_init(), msg, context::multi, MULTI_CACHE_ROUTE_TTL, multi_context::multi_io, multi_io_init(), multi_reap_new(), options::n_bcast_buf, multi_context::new_connection_limiter, context::options, options::real_hash_size, reap_buckets_per_pass(), multi_context::reaper, multi_context::route_helper, multi_context::schedule, schedule_init(), deferred_signal_schedule_entry::signal_received, options::stale_routes_ageing_time, multi_context::stale_routes_check_et, options::stale_routes_check_interval, multi_context::status_file_version, options::status_file_version, multi_context::tcp_queue_limit, options::tcp_queue_limit, multi_context::top, TOP_NET30, options::topology, context_1::tuntap, multi_context::vhash, and options::virtual_hash_size.

Referenced by tunnel_server().

multi_instance_string()

const char * multi_instance_string	(	const struct multi_instance *	mi,
		bool	null,
		struct gc_arena *	gc
	)

Definition at line 418 of file multi.c.

References alloc_buf_gc(), BSTR, buf_printf(), context::c2, check_debug_level(), multi_instance::context, D_DCO_DEBUG, dco_enabled(), gc, buffer::len, mroute_addr_print(), MULTI_PREFIX_MAX_LENGTH, context::options, multi_instance::real, tls_multi::rx_peer_id, tls_common_name(), and context_2::tls_multi.

Referenced by generate_prefix(), multi_add_iroutes(), multi_check_dest_addr_allowed(), multi_client_connect_late_setup(), multi_client_setup_dco_initial(), multi_get_instance_by_virtual_addr(), multi_io_post(), multi_learn_addr(), multi_select_virtual_addr(), multi_unlearn_addr(), and route_quota_exceeded().

multi_learn_addr()

static struct multi_instance * multi_learn_addr ( struct multi_context *  m, struct multi_instance *  mi, const struct mroute_addr *  addr, const unsigned int  flags  )

static

Definition at line 1010 of file multi.c.

References multi_route::addr, ALLOC_OBJ, mroute_helper::cache_generation, multi_route::cache_generation, D_MULTI_LOW, multi_route::flags, gc, gc_free(), gc_new(), hash_add_fast(), hash_lookup_fast(), hash_value(), multi_route::instance, hash_element::key, multi_route::last_reference, learn_address_script(), multi_context::local, mroute_addr_equal(), mroute_addr_print(), mroute_learnable_address(), msg, multi_instance_inc_refcount(), multi_instance_string(), MULTI_ROUTE_CACHE, multi_route_defined(), multi_route_del(), now, multi_context::route_helper, route_quota_inc(), route_quota_test(), hash_element::value, and multi_context::vhash.

Referenced by multi_get_instance_by_virtual_addr(), multi_learn_in6_addr(), multi_learn_in_addr_t(), and multi_process_incoming_link_data().

multi_learn_in6_addr()

static struct multi_instance * multi_learn_in6_addr ( struct multi_context *  m, struct multi_instance *  mi, struct in6_addr  a6, int  netbits, bool  primary  )

static

Definition at line 1220 of file multi.c.

References mroute_addr::addr, ASSERT, context::c2, multi_instance::context, dco_install_iroute(), mroute_addr::len, management_learn_addr(), context_2::mda_context, MR_ADDR_IPV6, MR_ONLINK_DCO_ADDR, MR_WITH_NETBITS, mroute_addr_mask_host_bits(), multi_check_push_ifconfig_ipv6_extra_route(), multi_learn_addr(), MULTI_ROUTE_PERMANENT, mroute_addr::netbits, mroute_addr::type, and mroute_addr::v6.

Referenced by multi_add_iroutes(), multi_client_connect_late_setup(), and update_vhash().

multi_learn_in_addr_t()

static struct multi_instance * multi_learn_in_addr_t ( struct multi_context *  m, struct multi_instance *  mi, in_addr_t  a, int  netbits, bool  primary  )

static

Definition at line 1174 of file multi.c.

References mroute_addr::addr, ASSERT, context::c2, CLEAR, multi_instance::context, dco_install_iroute(), mroute_addr::len, management_learn_addr(), context_2::mda_context, MR_ONLINK_DCO_ADDR, MR_WITH_NETBITS, mroute_extract_openvpn_sockaddr(), multi_check_push_ifconfig_extra_route(), multi_learn_addr(), MULTI_ROUTE_PERMANENT, mroute_addr::netbits, mroute_addr::type, and mroute_addr::v4.

Referenced by multi_add_iroutes(), multi_client_connect_late_setup(), and update_vhash().

multi_print_status()

static void multi_print_status ( struct multi_context *  m, struct status_output *  so, const int  version  )

static

Definition at line 786 of file multi.c.

References mroute_addr::addr, context::c1, context::c2, man_def_auth_context::cid, options::ciphername, multi_instance::context, counter_format, multi_instance::created, D_MULTI_DEBUG, tuntap::dco, dco_enabled(), dco_get_peer_stats_multi(), context_2::dco_read_bytes, context_2::dco_write_bytes, ENABLE_MANAGEMENT, gc, gc_free(), gc_new(), multi_instance::halt, multi_context::hash, hash_iterator_free(), hash_iterator_init(), hash_iterator_next(), hash_n_elements(), IA_EMPTY_IF_UNDEF, mroute_addr::len, context_2::link_read_bytes, context_2::link_write_bytes, MAX_PEER_ID, mbuf_maximum_queued(), context_2::mda_context, mroute_addr_print(), msg, MULTI_ROUTE_CACHE, multi_route_defined(), now, context::options, print_in6_addr(), print_in_addr_t(), multi_instance::real, multi_instance::reporting_addr, multi_instance::reporting_addr_ipv6, route, tls_multi::rx_peer_id, status_flush(), status_printf(), status_reset(), time_string(), title_string, tls_common_name(), context_2::tls_multi, tls_username(), multi_context::top, translate_cipher_name_to_openvpn(), context_1::tuntap, hash_element::value, and multi_context::vhash.

Referenced by management_callback_status(), multi_process_per_second_timers_dowork(), and multi_process_signal().

multi_process_drop_outgoing_tun()

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

Definition at line 3719 of file multi.c.

References ASSERT, buf_reset(), context::c2, clear_prefix(), multi_instance::context, D_MULTI_ERRORS, buffer::len, msg, multi_process_post(), multi_context::pending, set_prefix(), and context_2::to_tun.

Referenced by multi_io_dispatch().

multi_process_float()

static void multi_process_float ( struct multi_context *  m, struct multi_instance *  mi, struct link_socket *  sock  )

static

Handles peer floating.

If peer is floated to a taken address, either drops packet (if peer that owns address has different CN) or disconnects existing peer. Updates multi_instance with new address, updates hashtables in multi_context.

Definition at line 3161 of file multi.c.

References link_socket_addr::actual, ASSERT, context::c2, man_def_auth_context::cid, multi_context::cid_hash, multi_instance::context, D_MULTI_MEDIUM, context_2::from, gc, gc_free(), gc_new(), generate_prefix(), multi_context::hash, hash_add(), hash_remove(), link_socket::info, mroute_addr::len, context_2::link_socket_infos, context_2::link_sockets, link_socket_info::lsa, MAPF_SHOW_FAMILY, context_2::mda_context, MR_WITH_PROTO, mroute_addr_print_ex(), mroute_extract_openvpn_sockaddr(), msg, multi_check_dest_addr_allowed(), mroute_addr::proto, link_socket_info::proto, multi_instance::real, tls_multi::rx_peer_id, tls_common_name(), context_2::tls_multi, tls_update_remote_addr(), context_2::to_link_addr, multi_context::top, and mroute_addr::type.

Referenced by multi_process_incoming_link_data().

multi_process_incoming_link_data()

static void multi_process_incoming_link_data ( struct multi_context *  m, bool  floated, struct link_socket *  sock  )

static

Process incoming data packet from clients.

This tries to decrypt and then forward incoming data packets.

Definition at line 3350 of file multi.c.

References ASSERT, BLEN, context_2::buf, context::c1, context::c2, multi_instance::context, D_MULTI_DROPPED, D_VLAN_DEBUG, buffer::data, DEV_TYPE_TAP, DEV_TYPE_TUN, multi_context::enable_c2c, gc, gc_free(), gc_new(), link_socket::info, buffer::len, mroute_addr::len, MR_ADDR_IPV6, MR_ADDR_MASK, mroute_addr_print(), mroute_extract_addr_from_packet(), MROUTE_EXTRACT_BCAST, MROUTE_EXTRACT_MCAST, MROUTE_EXTRACT_SUCCEEDED, msg, multi_bcast(), multi_get_instance_by_virtual_addr(), multi_learn_addr(), multi_process_float(), multi_unicast(), context::options, multi_context::pending, process_incoming_link_part1(), process_incoming_link_part2(), register_activity(), context_2::to_tun, multi_context::top, TUNNEL_TYPE, context_1::tuntap, mroute_addr::vid, vlan_is_tagged(), options::vlan_pvid, and options::vlan_tagging.

Referenced by multi_process_incoming_link().

multi_process_per_second_timers_dowork()

void multi_process_per_second_timers_dowork

(

struct multi_context *

m

)

Definition at line 3798 of file multi.c.

References context::c1, check_stale_routes(), multi_ifconfig_pool_persist(), multi_print_status(), multi_reap_process(), context::options, stale_route_check_trigger(), options::stale_routes_check_interval, multi_context::status_file_version, context_1::status_output, status_trigger(), and multi_context::top.

Referenced by multi_process_per_second_timers().

multi_process_post()

bool multi_process_post	(	struct multi_context *	m,
		struct multi_instance *	mi,
		const unsigned int	flags
	)

Perform postprocessing of a VPN tunnel instance.

After some VPN tunnel activity has taken place, the VPN tunnel's state may need updating and some follow-up action may be required. This function controls the necessary postprocessing. It is called by many other functions that handle VPN tunnel related activity, such as multi_process_incoming_link(), multi_process_outgoing_link(), multi_process_incoming_tun(), multi_process_outgoing_tun(), and multi_process_timeout(), among others.

Parameters

m	- The single multi_context structure.
mi	- The multi_instance of the VPN tunnel to be postprocessed.
flags	- Fast I/O optimization flags.

Returns

• True, if the VPN tunnel instance mi was not closed due to a signal during processing.
• False, if the VPN tunnel instance mi was closed.

Definition at line 2980 of file multi.c.

References ANY_OUT, auth_deferred_status::auth_control_file, key_state::authenticated, context::c2, multi_instance::client_connect_defer_state, multi_instance::context, client_connect_defer_state::deferred_ret_file, context_2::fragment, is_cas_pending(), IS_SIG, tls_session::key, KS_AUTH_DEFERRED, KS_AUTH_FALSE, KS_PRIMARY, buffer::len, MPP_CLOSE_ON_SIGNAL, MPP_PRE_SELECT, MPP_RECORD_TOUCH, multi_context::mpp_touched, multi_close_instance_on_signal(), multi_connection_established(), multi_schedule_context_wakeup(), multi_set_pending(), tls_multi::multi_state, fragment_master::outgoing, multi_context::pending, key_state::plugin_auth, pre_select(), key_state::script_auth, tls_multi::session, context_2::timeval, context_2::tls_multi, TM_ACTIVE, context_2::to_link, context_2::to_tun, and multi_context::top.

Referenced by multi_create_instance(), multi_io_dispatch(), multi_process_drop_outgoing_tun(), multi_process_incoming_link(), multi_process_incoming_tun(), multi_process_outgoing_link_dowork(), multi_process_outgoing_tun(), multi_process_timeout(), and multi_tcp_process_outgoing_link().

multi_process_signal()

bool multi_process_signal

(

struct multi_context *

m

)

Definition at line 3880 of file multi.c.

References options::ce, multi_context::deferred_shutdown_signal, connection_entry::explicit_exit_notification, has_udp_in_local_list(), is_exit_restart(), M_INFO, multi_print_status(), multi_push_restart_schedule_exit(), context::options, context::sig, deferred_signal_schedule_entry::signal_received, signal_info::signal_received, signal_reset(), SIGUSR2, status_close(), multi_context::status_file_version, status_open(), and multi_context::top.

multi_process_timeout()

bool multi_process_timeout	(	struct multi_context *	m,
		const unsigned int	mpp_flags
	)

Definition at line 3687 of file multi.c.

References clear_prefix(), multi_context::deferred_shutdown_signal, multi_context::earliest_wakeup, multi_process_post(), multi_context::schedule, schedule_remove_entry(), set_prefix(), deferred_signal_schedule_entry::signal_received, and throw_signal().

Referenced by multi_io_dispatch().

multi_push_restart_schedule_exit()

static void multi_push_restart_schedule_exit ( struct multi_context *  m, bool  next_server  )

static

Definition at line 3847 of file multi.c.

References ASSERT, context::c2, compute_wakeup_sigma(), multi_instance::context, D_PUSH, multi_context::deferred_shutdown_signal, multi_instance::halt, link_socket::info, multi_context::instances, context_2::link_sockets, multi_context::max_peerid, multi_schedule_context_wakeup(), openvpn_gettimeofday(), link_socket_info::proto, proto_is_dgram(), multi_context::schedule, schedule_add_entry(), send_control_channel_string(), context::sig, deferred_signal_schedule_entry::signal_received, signal_info::signal_received, signal_reset(), multi_context::top, tv_add(), and deferred_signal_schedule_entry::wakeup.

Referenced by multi_process_signal().

multi_reap_all()

static void multi_reap_all ( const struct multi_context *  m )

static

Definition at line 185 of file multi.c.

References hash_n_buckets(), multi_reap_range(), and multi_context::vhash.

Referenced by multi_uninit().

multi_reap_free()

static void multi_reap_free ( struct multi_reap *  mr )

static

Definition at line 215 of file multi.c.

Referenced by multi_uninit().

multi_reap_new()

static struct multi_reap * multi_reap_new ( uint32_t  buckets_per_pass )

static

Definition at line 191 of file multi.c.

References ALLOC_OBJ, multi_reap::bucket_base, multi_reap::buckets_per_pass, multi_reap::last_call, and now.

Referenced by multi_init().

multi_reap_process_dowork()

void multi_reap_process_dowork

(

const struct multi_context *

m

)

Definition at line 202 of file multi.c.

References multi_reap::bucket_base, multi_reap::buckets_per_pass, hash_n_buckets(), multi_reap::last_call, multi_reap_range(), now, multi_context::reaper, and multi_context::vhash.

Referenced by multi_reap_process().

multi_reap_range()

static void multi_reap_range ( const struct multi_context *  m, uint32_t  start_bucket, uint32_t  end_bucket  )

static

Definition at line 161 of file multi.c.

References multi_route::addr, D_MULTI_DEBUG, dmsg, gc, gc_free(), gc_new(), hash_iterator_delete_element(), hash_iterator_free(), hash_iterator_init_range(), hash_iterator_next(), learn_address_script(), mroute_addr_print(), multi_route_defined(), multi_route_del(), hash_element::value, and multi_context::vhash.

Referenced by multi_reap_all(), and multi_reap_process_dowork().

multi_schedule_context_wakeup()

static void multi_schedule_context_wakeup ( struct multi_context *  m, struct multi_instance *  mi  )

static

Definition at line 2938 of file multi.c.

References ASSERT, context::c2, compute_wakeup_sigma(), multi_instance::context, openvpn_gettimeofday(), multi_context::schedule, schedule_add_entry(), context_2::timeval, tv_add(), and multi_instance::wakeup.

Referenced by management_client_pending_auth(), management_kill_by_cid(), multi_process_post(), and multi_push_restart_schedule_exit().

multi_select_virtual_addr()

static void multi_select_virtual_addr ( struct multi_context *  m, struct multi_instance *  mi  )

static

Definition at line 1401 of file multi.c.

References context::c1, context::c2, CLEAR, multi_instance::context, D_MULTI_ERRORS, DEV_TYPE_TAP, DEV_TYPE_TUN, options::duplicate_cn, gc, gc_free(), gc_new(), options::ifconfig_ipv6_netbits, options::ifconfig_ipv6_pool_defined, multi_context::ifconfig_pool, ifconfig_pool_acquire(), options::ifconfig_pool_defined, options::ifconfig_pool_netmask, ifconfig_pool_release(), tuntap::local, tuntap::local_ipv6, M_INFO, msg, multi_instance_string(), context::options, print_in6_addr(), print_in_addr_t(), context_2::push_ifconfig_defined, options::push_ifconfig_defined, context_2::push_ifconfig_ipv6_defined, options::push_ifconfig_ipv6_defined, context_2::push_ifconfig_ipv6_local, options::push_ifconfig_ipv6_local, context_2::push_ifconfig_ipv6_netbits, options::push_ifconfig_ipv6_netbits, context_2::push_ifconfig_ipv6_remote, options::push_ifconfig_ipv6_remote, context_2::push_ifconfig_local, options::push_ifconfig_local, context_2::push_ifconfig_local_alias, options::push_ifconfig_local_alias, context_2::push_ifconfig_remote_netmask, options::push_ifconfig_remote_netmask, tuntap::remote_netmask, tls_common_name(), context_2::tls_multi, TOP_NET30, TOP_P2P, TOP_SUBNET, TUNNEL_TOPOLOGY, TUNNEL_TYPE, context_1::tuntap, and multi_instance::vaddr_handle.

Referenced by multi_client_connect_early_setup(), multi_client_connect_mda(), multi_client_connect_post(), and multi_client_connect_post_plugin().

multi_set_virtual_addr_env()

static void multi_set_virtual_addr_env ( struct multi_instance *  mi )

static

Definition at line 1542 of file multi.c.

References context::c1, context::c2, multi_instance::context, DEV_TYPE_TAP, DEV_TYPE_TUN, context_2::es, context_2::push_ifconfig_defined, context_2::push_ifconfig_ipv6_defined, context_2::push_ifconfig_ipv6_local, context_2::push_ifconfig_ipv6_netbits, context_2::push_ifconfig_ipv6_remote, context_2::push_ifconfig_local, context_2::push_ifconfig_remote_netmask, SA_SET_IF_NONZERO, setenv_del(), setenv_in6_addr(), setenv_in_addr_t(), setenv_int(), TOP_SUBNET, TUNNEL_TOPOLOGY, TUNNEL_TYPE, and context_1::tuntap.

Referenced by multi_client_connect_mda(), multi_client_connect_post(), multi_client_connect_post_plugin(), and multi_client_connect_setenv().

multi_signal_instance()

static void multi_signal_instance ( struct multi_context *  m, struct multi_instance *  mi, const int  sig  )

static

Definition at line 3231 of file multi.c.

References multi_instance::context, multi_close_instance_on_signal(), context::sig, and signal_info::signal_received.

Referenced by management_callback_kill_by_addr(), and management_callback_kill_by_cn().

multi_top_free()

static void multi_top_free ( struct multi_context *  m )

static

Definition at line 3834 of file multi.c.

References context_2::buffers, context::c2, CC_GC_FREE, close_context(), free_context_buffers(), and multi_context::top.

Referenced by tunnel_server().

multi_top_init()

static void multi_top_init ( struct context *  top )

static

Definition at line 3827 of file multi.c.

References context_2::buffers, context::c2, context_2::frame, inherit_context_top(), init_context_buffers(), context::multi, and multi_context::top.

Referenced by tunnel_server().

multi_unicast()

static void multi_unicast ( struct multi_context *  m, const struct buffer *  buf, struct multi_instance *  mi  )

inlinestatic

Definition at line 2856 of file multi.c.

References BLEN, mbuf_buffer::buf, mbuf_buffer::flags, mbuf_alloc_buf(), mbuf_free_buf(), MF_UNICAST, and multi_add_mbuf().

Referenced by multi_process_incoming_link_data().

multi_uninit()

static void multi_uninit ( struct multi_context *  m )

static

Definition at line 658 of file multi.c.

References multi_context::cid_hash, frequency_limit_free(), multi_context::hash, hash_free(), multi_context::ifconfig_pool, ifconfig_pool_free(), initial_rate_limit_free(), multi_context::initial_rate_limiter, multi_context::instances, multi_context::max_peerid, multi_context::mbuf, mbuf_free(), mroute_helper_free(), multi_close_instance(), multi_context::multi_io, multi_io_free(), multi_reap_all(), multi_reap_free(), multi_context::new_connection_limiter, multi_context::reaper, multi_context::route_helper, multi_context::schedule, schedule_free(), and multi_context::vhash.

Referenced by tunnel_server().

multi_unlearn_addr()

static void multi_unlearn_addr ( struct multi_context *  m, struct multi_instance *  mi, const struct mroute_addr *  addr  )

static

Definition at line 4294 of file multi.c.

References multi_route::addr, D_MULTI_LOW, gc, gc_free(), gc_new(), hash_lookup_fast(), hash_remove_by_value(), hash_value(), multi_route::instance, learn_address_script(), mroute_addr_print(), msg, multi_instance_string(), multi_route_del(), hash_element::value, and multi_context::vhash.

Referenced by multi_unlearn_in6_addr(), and multi_unlearn_in_addr_t().

multi_unlearn_in6_addr()

static void multi_unlearn_in6_addr ( struct multi_context *  m, struct multi_instance *  mi, struct in6_addr  a6  )

static

Parameters

m	The multi_context
mi	The multi_instance of the client we are updating
a6	The new IPv6 address

Definition at line 4347 of file multi.c.

References mroute_addr::addr, CLEAR, mroute_addr::len, MR_ADDR_IPV6, and multi_unlearn_addr().

Referenced by unlearn_ifconfig_ipv6().

multi_unlearn_in_addr_t()

static void multi_unlearn_in_addr_t ( struct multi_context *  m, struct multi_instance *  mi, in_addr_t  a  )

static

Parameters

m	The multi_context
mi	The multi_instance of the client we are updating
a	The new IPv4 address in network byte order

Definition at line 4329 of file multi.c.

References mroute_addr::addr, CLEAR, mroute_addr::len, MR_ADDR_IPV4, and multi_unlearn_addr().

Referenced by unlearn_ifconfig().

override_locked_username()

static bool override_locked_username ( struct multi_instance *  mi )

static

Overrides the locked username with the username of –override-username.

Parameters

mi	the multi instance that should be modified.

Definition at line 2567 of file multi.c.

References tls_multi::auth_token_initial, context::c2, CLEAR, multi_instance::context, D_MULTI_ERRORS, D_MULTI_LOW, generate_auth_token(), tls_multi::locked_cn, tls_multi::locked_original_username, tls_multi::locked_username, msg, context::options, options::override_username, tls_multi::session, set_common_name(), ssl_verify_username_length(), SSLF_USERNAME_AS_COMMON_NAME, strncpynt(), tls_lock_common_name(), context_2::tls_multi, TM_ACTIVE, and user_pass::username.

Referenced by multi_connection_established().

reap_buckets_per_pass()

static uint32_t reap_buckets_per_pass ( uint32_t  n_buckets )

static

Definition at line 224 of file multi.c.

References constrain_uint(), REAP_DIVISOR, REAP_MAX, and REAP_MIN.

Referenced by multi_init().

route_quota_exceeded()

void route_quota_exceeded

(

const struct multi_instance *

mi

)

Definition at line 3741 of file multi.c.

References multi_instance::context, D_ROUTE_QUOTA, gc, gc_free(), gc_new(), options::max_routes_per_client, msg, multi_instance_string(), and context::options.

Referenced by route_quota_test().

set_cc_config()

static void set_cc_config ( struct multi_instance *  mi, struct buffer_list *  cc_config  )

static

Definition at line 75 of file multi.c.

References buffer_list_free(), and multi_instance::cc_config.

Referenced by management_client_auth(), and multi_close_instance().

setenv_stats()

static void setenv_stats ( struct multi_context *  m, struct context *  c  )

static

Definition at line 499 of file multi.c.

References context::c1, context::c2, tuntap::dco, dco_enabled(), dco_get_peer_stats_multi(), context_2::dco_read_bytes, context_2::dco_write_bytes, context_2::es, context_2::link_read_bytes, context_2::link_write_bytes, context::options, setenv_counter(), multi_context::top, and context_1::tuntap.

Referenced by multi_client_disconnect_setenv().

stale_route_check_trigger()

static bool stale_route_check_trigger ( struct multi_context *  m )

static

Definition at line 3787 of file multi.c.

References CLEAR, ETT_DEFAULT, event_timeout_trigger(), and multi_context::stale_routes_check_et.

Referenced by multi_process_per_second_timers_dowork().

ungenerate_prefix()

void ungenerate_prefix

(

struct multi_instance *

mi

)

Definition at line 465 of file multi.c.

References multi_instance::msg_prefix, and set_prefix().

Referenced by multi_close_instance(), and multi_get_instance_udp_data().

unlearn_ifconfig()

void unlearn_ifconfig	(	struct multi_context *	m,
		struct multi_instance *	mi
	)

Definition at line 4361 of file multi.c.

References context::c2, multi_instance::context, mroute_addr::len, multi_unlearn_in_addr_t(), context_2::push_ifconfig_defined, context_2::push_ifconfig_local, and multi_instance::reporting_addr.

Referenced by send_single_push_update(), and update_vhash().

unlearn_ifconfig_ipv6()

void unlearn_ifconfig_ipv6	(	struct multi_context *	m,
		struct multi_instance *	mi
	)

Definition at line 4373 of file multi.c.

References context::c2, CLEAR, multi_instance::context, multi_unlearn_in6_addr(), context_2::push_ifconfig_ipv6_defined, context_2::push_ifconfig_ipv6_local, and multi_instance::reporting_addr_ipv6.

Referenced by send_single_push_update(), and update_vhash().

update_vhash()

void update_vhash	(	struct multi_context *	m,
		struct multi_instance *	mi,
		const char *	new_ip,
		const char *	new_ipv6
	)

Update the vhash with new IP/IPv6 addresses in the multi_context when a push-update message containing ifconfig/ifconfig-ipv6 options is sent from the server.

Parameters

m	The multi_context
mi	The multi_instance of the client we are updating
new_ip	The new IPv4 address or NULL if no change
new_ipv6	The new IPv6 address or NULL if no change

Definition at line 4395 of file multi.c.

References context::c2, CLEAR, multi_instance::context, multi_learn_in6_addr(), multi_learn_in_addr_t(), context_2::push_ifconfig_defined, context_2::push_ifconfig_ipv6_defined, context_2::push_ifconfig_ipv6_local, context_2::push_ifconfig_local, multi_instance::reporting_addr, multi_instance::reporting_addr_ipv6, unlearn_ifconfig(), and unlearn_ifconfig_ipv6().

Referenced by send_single_push_update().

Variable Documentation

client_connect_handlers

const multi_client_connect_handler client_connect_handlers[]

static

Initial value:

= {
    multi_client_connect_compress_migrate,
    multi_client_connect_source_ccd,
    multi_client_connect_call_plugin_v1,
    multi_client_connect_call_plugin_v2,
    multi_client_connect_call_script,
    multi_client_connect_mda,
    NULL,
}

Definition at line 2552 of file multi.c.

Referenced by multi_connection_established().