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-rw-r--r--src/openvpn/forward-inline.h294
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diff --git a/src/openvpn/forward-inline.h b/src/openvpn/forward-inline.h
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+/*
+ * OpenVPN -- An application to securely tunnel IP networks
+ * over a single TCP/UDP port, with support for SSL/TLS-based
+ * session authentication and key exchange,
+ * packet encryption, packet authentication, and
+ * packet compression.
+ *
+ * Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (see the file COPYING included with this
+ * distribution); if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef FORWARD_INLINE_H
+#define FORWARD_INLINE_H
+
+/*
+ * Inline functions
+ */
+
+/*
+ * Does TLS session need service?
+ */
+static inline void
+check_tls (struct context *c)
+{
+#if defined(ENABLE_CRYPTO) && defined(ENABLE_SSL)
+ void check_tls_dowork (struct context *c);
+ if (c->c2.tls_multi)
+ check_tls_dowork (c);
+#endif
+}
+
+/*
+ * TLS errors are fatal in TCP mode.
+ * Also check for --tls-exit trigger.
+ */
+static inline void
+check_tls_errors (struct context *c)
+{
+#if defined(ENABLE_CRYPTO) && defined(ENABLE_SSL)
+ void check_tls_errors_co (struct context *c);
+ void check_tls_errors_nco (struct context *c);
+ if (c->c2.tls_multi && c->c2.tls_exit_signal)
+ {
+ if (link_socket_connection_oriented (c->c2.link_socket))
+ {
+ if (c->c2.tls_multi->n_soft_errors)
+ check_tls_errors_co (c);
+ }
+ else
+ {
+ if (c->c2.tls_multi->n_hard_errors)
+ check_tls_errors_nco (c);
+ }
+ }
+#endif
+}
+
+/*
+ * Check for possible incoming configuration
+ * messages on the control channel.
+ */
+static inline void
+check_incoming_control_channel (struct context *c)
+{
+#if P2MP
+ void check_incoming_control_channel_dowork (struct context *c);
+ if (tls_test_payload_len (c->c2.tls_multi) > 0)
+ check_incoming_control_channel_dowork (c);
+#endif
+}
+
+/*
+ * Options like --up-delay need to be triggered by this function which
+ * checks for connection establishment.
+ */
+static inline void
+check_connection_established (struct context *c)
+{
+ void check_connection_established_dowork (struct context *c);
+ if (event_timeout_defined (&c->c2.wait_for_connect))
+ check_connection_established_dowork (c);
+}
+
+/*
+ * Should we add routes?
+ */
+static inline void
+check_add_routes (struct context *c)
+{
+ void check_add_routes_dowork (struct context *c);
+ if (event_timeout_trigger (&c->c2.route_wakeup, &c->c2.timeval, ETT_DEFAULT))
+ check_add_routes_dowork (c);
+}
+
+/*
+ * Should we exit due to inactivity timeout?
+ */
+static inline void
+check_inactivity_timeout (struct context *c)
+{
+ void check_inactivity_timeout_dowork (struct context *c);
+
+ if (c->options.inactivity_timeout
+ && event_timeout_trigger (&c->c2.inactivity_interval, &c->c2.timeval, ETT_DEFAULT))
+ check_inactivity_timeout_dowork (c);
+}
+
+#if P2MP
+
+static inline void
+check_server_poll_timeout (struct context *c)
+{
+ void check_server_poll_timeout_dowork (struct context *c);
+
+ if (c->options.server_poll_timeout
+ && event_timeout_trigger (&c->c2.server_poll_interval, &c->c2.timeval, ETT_DEFAULT))
+ check_server_poll_timeout_dowork (c);
+}
+
+/*
+ * Scheduled exit?
+ */
+static inline void
+check_scheduled_exit (struct context *c)
+{
+ void check_scheduled_exit_dowork (struct context *c);
+
+ if (event_timeout_defined (&c->c2.scheduled_exit))
+ {
+ if (event_timeout_trigger (&c->c2.scheduled_exit, &c->c2.timeval, ETT_DEFAULT))
+ check_scheduled_exit_dowork (c);
+ }
+}
+#endif
+
+/*
+ * Should we write timer-triggered status file.
+ */
+static inline void
+check_status_file (struct context *c)
+{
+ void check_status_file_dowork (struct context *c);
+
+ if (c->c1.status_output)
+ {
+ if (status_trigger_tv (c->c1.status_output, &c->c2.timeval))
+ check_status_file_dowork (c);
+ }
+}
+
+#ifdef ENABLE_FRAGMENT
+/*
+ * Should we deliver a datagram fragment to remote?
+ */
+static inline void
+check_fragment (struct context *c)
+{
+ void check_fragment_dowork (struct context *c);
+ if (c->c2.fragment)
+ check_fragment_dowork (c);
+}
+#endif
+
+#if P2MP
+
+/*
+ * see if we should send a push_request in response to --pull
+ */
+static inline void
+check_push_request (struct context *c)
+{
+ void check_push_request_dowork (struct context *c);
+ if (event_timeout_trigger (&c->c2.push_request_interval, &c->c2.timeval, ETT_DEFAULT))
+ check_push_request_dowork (c);
+}
+
+#endif
+
+#ifdef ENABLE_CRYPTO
+/*
+ * Should we persist our anti-replay packet ID state to disk?
+ */
+static inline void
+check_packet_id_persist_flush (struct context *c)
+{
+ if (packet_id_persist_enabled (&c->c1.pid_persist)
+ && event_timeout_trigger (&c->c2.packet_id_persist_interval, &c->c2.timeval, ETT_DEFAULT))
+ packet_id_persist_save (&c->c1.pid_persist);
+}
+#endif
+
+/*
+ * Set our wakeup to 0 seconds, so we will be rescheduled
+ * immediately.
+ */
+static inline void
+context_immediate_reschedule (struct context *c)
+{
+ c->c2.timeval.tv_sec = 0; /* ZERO-TIMEOUT */
+ c->c2.timeval.tv_usec = 0;
+}
+
+static inline void
+context_reschedule_sec (struct context *c, int sec)
+{
+ if (sec < 0)
+ sec = 0;
+ if (sec < c->c2.timeval.tv_sec)
+ {
+ c->c2.timeval.tv_sec = sec;
+ c->c2.timeval.tv_usec = 0;
+ }
+}
+
+static inline struct link_socket_info *
+get_link_socket_info (struct context *c)
+{
+ if (c->c2.link_socket_info)
+ return c->c2.link_socket_info;
+ else
+ return &c->c2.link_socket->info;
+}
+
+static inline void
+register_activity (struct context *c, const int size)
+{
+ if (c->options.inactivity_timeout)
+ {
+ c->c2.inactivity_bytes += size;
+ if (c->c2.inactivity_bytes >= c->options.inactivity_minimum_bytes)
+ {
+ c->c2.inactivity_bytes = 0;
+ event_timeout_reset (&c->c2.inactivity_interval);
+ }
+ }
+}
+
+/*
+ * Return the io_wait() flags appropriate for
+ * a point-to-point tunnel.
+ */
+static inline unsigned int
+p2p_iow_flags (const struct context *c)
+{
+ unsigned int flags = (IOW_SHAPER|IOW_CHECK_RESIDUAL|IOW_FRAG|IOW_READ|IOW_WAIT_SIGNAL);
+ if (c->c2.to_link.len > 0)
+ flags |= IOW_TO_LINK;
+ if (c->c2.to_tun.len > 0)
+ flags |= IOW_TO_TUN;
+ return flags;
+}
+
+/*
+ * This is the core I/O wait function, used for all I/O waits except
+ * for TCP in server mode.
+ */
+static inline void
+io_wait (struct context *c, const unsigned int flags)
+{
+ void io_wait_dowork (struct context *c, const unsigned int flags);
+
+ if (c->c2.fast_io && (flags & (IOW_TO_TUN|IOW_TO_LINK|IOW_MBUF)))
+ {
+ /* fast path -- only for TUN/TAP/UDP writes */
+ unsigned int ret = 0;
+ if (flags & IOW_TO_TUN)
+ ret |= TUN_WRITE;
+ if (flags & (IOW_TO_LINK|IOW_MBUF))
+ ret |= SOCKET_WRITE;
+ c->c2.event_set_status = ret;
+ }
+ else
+ {
+ /* slow path */
+ io_wait_dowork (c, flags);
+ }
+}
+
+#define CONNECTION_ESTABLISHED(c) (get_link_socket_info(c)->connection_established)
+
+#endif /* EVENT_INLINE_H */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-04 13:58:11 +0000