tor-android/external/badvpn_dns/flow/PacketPassNotifier.c

104 lines
3.4 KiB
C

/**
* @file PacketPassNotifier.c
* @author Ambroz Bizjak <ambrop7@gmail.com>
*
* @section LICENSE
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stddef.h>
#include <flow/PacketPassNotifier.h>
void input_handler_send (PacketPassNotifier *o, uint8_t *data, int data_len)
{
DebugObject_Access(&o->d_obj);
// schedule send
PacketPassInterface_Sender_Send(o->output, data, data_len);
// if we have a handler, call it
if (o->handler) {
o->handler(o->handler_user, data, data_len);
return;
}
}
void input_handler_requestcancel (PacketPassNotifier *o)
{
DebugObject_Access(&o->d_obj);
PacketPassInterface_Sender_RequestCancel(o->output);
}
void output_handler_done (PacketPassNotifier *o)
{
DebugObject_Access(&o->d_obj);
PacketPassInterface_Done(&o->input);
}
void PacketPassNotifier_Init (PacketPassNotifier *o, PacketPassInterface *output, BPendingGroup *pg)
{
// init arguments
o->output = output;
// init input
PacketPassInterface_Init(&o->input, PacketPassInterface_GetMTU(o->output), (PacketPassInterface_handler_send)input_handler_send, o, pg);
if (PacketPassInterface_HasCancel(o->output)) {
PacketPassInterface_EnableCancel(&o->input, (PacketPassInterface_handler_requestcancel)input_handler_requestcancel);
}
// init output
PacketPassInterface_Sender_Init(o->output, (PacketPassInterface_handler_done)output_handler_done, o);
// set no handler
o->handler = NULL;
DebugObject_Init(&o->d_obj);
}
void PacketPassNotifier_Free (PacketPassNotifier *o)
{
DebugObject_Free(&o->d_obj);
// free input
PacketPassInterface_Free(&o->input);
}
PacketPassInterface * PacketPassNotifier_GetInput (PacketPassNotifier *o)
{
DebugObject_Access(&o->d_obj);
return &o->input;
}
void PacketPassNotifier_SetHandler (PacketPassNotifier *o, PacketPassNotifier_handler_notify handler, void *user)
{
DebugObject_Access(&o->d_obj);
o->handler = handler;
o->handler_user = user;
}