BadVPN – Blame information for rev 1
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1 | office | 1 | /** |
2 | * @file StreamPacketSender.c |
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3 | * @author Ambroz Bizjak <ambrop7@gmail.com> |
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4 | * |
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5 | * @section LICENSE |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without |
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8 | * modification, are permitted provided that the following conditions are met: |
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9 | * 1. Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * 2. Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * 3. Neither the name of the author nor the |
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15 | * names of its contributors may be used to endorse or promote products |
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16 | * derived from this software without specific prior written permission. |
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17 | * |
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18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
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19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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20 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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21 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
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22 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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23 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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24 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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25 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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27 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | */ |
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29 | |||
30 | #include <misc/debug.h> |
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31 | |||
32 | #include "StreamPacketSender.h" |
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33 | |||
34 | static void input_handler_send (StreamPacketSender *o, uint8_t *data, int data_len) |
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35 | { |
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36 | DebugObject_Access(&o->d_obj); |
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37 | ASSERT(data_len > 0) |
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38 | |||
39 | // limit length to MTU and remember |
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40 | if (data_len > o->output_mtu) { |
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41 | o->sending_len = o->output_mtu; |
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42 | } else { |
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43 | o->sending_len = data_len; |
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44 | } |
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45 | |||
46 | // send |
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47 | PacketPassInterface_Sender_Send(o->output, data, o->sending_len); |
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48 | } |
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49 | |||
50 | static void output_handler_done (StreamPacketSender *o) |
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51 | { |
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52 | DebugObject_Access(&o->d_obj); |
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53 | |||
54 | // done |
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55 | StreamPassInterface_Done(&o->input, o->sending_len); |
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56 | } |
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57 | |||
58 | void StreamPacketSender_Init (StreamPacketSender *o, PacketPassInterface *output, BPendingGroup *pg) |
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59 | { |
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60 | ASSERT(PacketPassInterface_GetMTU(output) > 0) |
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61 | |||
62 | // init arguments |
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63 | o->output = output; |
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64 | |||
65 | // remember output MTU |
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66 | o->output_mtu = PacketPassInterface_GetMTU(output); |
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67 | |||
68 | // init input |
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69 | StreamPassInterface_Init(&o->input, (StreamPassInterface_handler_send)input_handler_send, o, pg); |
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70 | |||
71 | // init output |
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72 | PacketPassInterface_Sender_Init(o->output, (PacketPassInterface_handler_done)output_handler_done, o); |
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73 | |||
74 | DebugObject_Init(&o->d_obj); |
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75 | } |
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76 | |||
77 | void StreamPacketSender_Free (StreamPacketSender *o) |
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78 | { |
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79 | DebugObject_Free(&o->d_obj); |
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80 | |||
81 | // free input |
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82 | StreamPassInterface_Free(&o->input); |
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83 | } |
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84 | |||
85 | StreamPassInterface * StreamPacketSender_GetInput (StreamPacketSender *o) |
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86 | { |
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87 | DebugObject_Access(&o->d_obj); |
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88 | |||
89 | return &o->input; |
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90 | } |