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1 office 1 /**
2 * @file DataProtoKeepaliveSource.c
3 * @author Ambroz Bizjak <ambrop7@gmail.com>
4 *
5 * @section LICENSE
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the author nor the
15 * names of its contributors may be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29  
30 #include <string.h>
31  
32 #include <protocol/dataproto.h>
33 #include <misc/byteorder.h>
34  
35 #include "DataProtoKeepaliveSource.h"
36  
37 static void output_handler_recv (DataProtoKeepaliveSource *o, uint8_t *data)
38 {
39 DebugObject_Access(&o->d_obj);
40  
41 struct dataproto_header header;
42 header.flags = htol8(0);
43 header.from_id = htol16(0);
44 header.num_peer_ids = htol16(0);
45 memcpy(data, &header, sizeof(header));
46  
47 // finish packet
48 PacketRecvInterface_Done(&o->output, sizeof(struct dataproto_header));
49 }
50  
51 void DataProtoKeepaliveSource_Init (DataProtoKeepaliveSource *o, BPendingGroup *pg)
52 {
53 // init output
54 PacketRecvInterface_Init(&o->output, sizeof(struct dataproto_header), (PacketRecvInterface_handler_recv)output_handler_recv, o, pg);
55  
56 DebugObject_Init(&o->d_obj);
57 }
58  
59 void DataProtoKeepaliveSource_Free (DataProtoKeepaliveSource *o)
60 {
61 DebugObject_Free(&o->d_obj);
62  
63 // free output
64 PacketRecvInterface_Free(&o->output);
65 }
66  
67 PacketRecvInterface * DataProtoKeepaliveSource_GetOutput (DataProtoKeepaliveSource *o)
68 {
69 DebugObject_Access(&o->d_obj);
70  
71 return &o->output;
72 }