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1 // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // exain.cpp - Inbound plugin example module |
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15 // |
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16 |
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17 #include "exain.h" |
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18 |
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19 #pragma warning (disable:4100) |
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20 |
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21 // |
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22 // Applies all the modifications needed for every incoming ICMP packet |
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23 // |
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24 TInt CProtocolExain::ApplyL(RMBufHookPacket& /*aPacket*/, RMBufRecvInfo& aInfo) |
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25 /** |
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26 * An IPv4 ICMP header detected. |
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27 * |
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28 * This example returns always KIp6Hook_PASS without modifying |
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29 * the packet in any way. There is some template if statements |
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30 * which demonstrate the major paths that would need to be taken, |
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31 * if any real processing was to happen. |
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32 */ |
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33 { |
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34 /** @code */ |
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35 if (aInfo.iProtocol != (TInt)KProtocolInetIcmp) |
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36 { |
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37 // If the CProtocolExain::NetworkAttached only bound the hook for |
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38 // IPv4 ICMP, we should never get here... |
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39 return KIp6Hook_PASS; |
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40 } |
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41 |
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42 if (aInfo.iIcmp != 0) |
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43 { |
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44 // The ICMPv4 header is in the returned packet of some ICMP error packet. |
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45 // |
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46 // aInfo.iOffset |
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47 // offset to the relevant ICMPv4 header |
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48 // aInfo.iOffsetIp |
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49 // indicates position of the IP header of the returned packet. |
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50 // aInfo.iSrcAddr |
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51 // is the source address of the returned packet (should be my own address) |
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52 // aInfo.iDstAddr |
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53 // is the destination address of the returned packet |
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54 return KIp6Hook_PASS; |
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55 } |
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56 |
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57 // The incoming packet is ICMPv4 addressed to this node. |
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58 // |
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59 // aInfo.iOffset |
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60 // offset to the relevant ICMPv4 header |
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61 // aInfo.iOffsetIp |
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62 // indicates position of the IP header before this ICMPv4 header |
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63 // (usually zero). |
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64 // aInfo.iSrcAddr |
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65 // is the source address of the packet |
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66 // aInfo.iDstAddr |
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67 // is the destination address of the packet (should be my own |
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68 // address, or some type of multicast/broadcast address). |
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69 return KIp6Hook_PASS; |
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70 /** @endcode */ |
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71 } |
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72 |
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73 #pragma warning (default:4100) |