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

83 lines
3.0 KiB
C

/**
* @file SingleStreamReceiver.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 <misc/debug.h>
#include "SingleStreamReceiver.h"
static void input_handler_done (SingleStreamReceiver *o, int data_len)
{
DebugObject_Access(&o->d_obj);
ASSERT(data_len > 0)
ASSERT(data_len <= o->packet_len - o->pos)
// update position
o->pos += data_len;
// if everything was received, notify user
if (o->pos == o->packet_len) {
DEBUGERROR(&o->d_err, o->handler(o->user));
return;
}
// receive more
StreamRecvInterface_Receiver_Recv(o->input, o->packet + o->pos, o->packet_len - o->pos);
}
void SingleStreamReceiver_Init (SingleStreamReceiver *o, uint8_t *packet, int packet_len, StreamRecvInterface *input, BPendingGroup *pg, void *user, SingleStreamReceiver_handler handler)
{
ASSERT(packet_len > 0)
ASSERT(handler)
// init arguments
o->packet = packet;
o->packet_len = packet_len;
o->input = input;
o->user = user;
o->handler = handler;
// set position zero
o->pos = 0;
// init output
StreamRecvInterface_Receiver_Init(o->input, (StreamRecvInterface_handler_done)input_handler_done, o);
// start receiving
StreamRecvInterface_Receiver_Recv(o->input, o->packet + o->pos, o->packet_len - o->pos);
DebugError_Init(&o->d_err, pg);
DebugObject_Init(&o->d_obj);
}
void SingleStreamReceiver_Free (SingleStreamReceiver *o)
{
DebugObject_Free(&o->d_obj);
DebugError_Free(&o->d_err);
}