<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> <title>Barry: protocol.cc Source File</title> <link href="doxygen.css" rel="stylesheet" type="text/css"> <link href="tabs.css" rel="stylesheet" type="text/css"> </head><body> <!-- Generated by Doxygen 1.5.6 --> <div class="navigation" id="top"> <div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="modules.html"><span>Modules</span></a></li> <li><a href="namespaces.html"><span>Namespaces</span></a></li> <li><a href="classes.html"><span>Classes</span></a></li> <li class="current"><a href="files.html"><span>Files</span></a></li> <li><a href="dirs.html"><span>Directories</span></a></li> </ul> </div> <div class="navpath"><a class="el" href="dir_3e14c0bb4416cf979afc3165665fc916.html">src</a> </div> </div> <div class="contents"> <h1>protocol.cc</h1><a href="protocol_8cc.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">///</span> <a name="l00002"></a>00002 <span class="comment"></span><span class="comment">/// \file protocol.cc</span> <a name="l00003"></a>00003 <span class="comment"></span><span class="comment">/// USB Blackberry bulk protocol API</span> <a name="l00004"></a>00004 <span class="comment"></span><span class="comment">///</span> <a name="l00005"></a>00005 <span class="comment"></span> <a name="l00006"></a>00006 <span class="comment">/*</span> <a name="l00007"></a>00007 <span class="comment"> Copyright (C) 2005-2011, Net Direct Inc. (http://www.netdirect.ca/)</span> <a name="l00008"></a>00008 <span class="comment"></span> <a name="l00009"></a>00009 <span class="comment"> This program is free software; you can redistribute it and/or modify</span> <a name="l00010"></a>00010 <span class="comment"> it under the terms of the GNU General Public License as published by</span> <a name="l00011"></a>00011 <span class="comment"> the Free Software Foundation; either version 2 of the License, or</span> <a name="l00012"></a>00012 <span class="comment"> (at your option) any later version.</span> <a name="l00013"></a>00013 <span class="comment"></span> <a name="l00014"></a>00014 <span class="comment"> This program is distributed in the hope that it will be useful,</span> <a name="l00015"></a>00015 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span> <a name="l00016"></a>00016 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.</span> <a name="l00017"></a>00017 <span class="comment"></span> <a name="l00018"></a>00018 <span class="comment"> See the GNU General Public License in the COPYING file at the</span> <a name="l00019"></a>00019 <span class="comment"> root directory of this project for more details.</span> <a name="l00020"></a>00020 <span class="comment">*/</span> <a name="l00021"></a>00021 <a name="l00022"></a>00022 <span class="preprocessor">#include "<a class="code" href="protocol_8h.html" title="USB Blackberry bulk protocol API constants.">protocol.h</a>"</span> <a name="l00023"></a>00023 <span class="preprocessor">#include "<a class="code" href="protostructs_8h.html" title="USB Blackberry bulk protocol API.">protostructs.h</a>"</span> <a name="l00024"></a>00024 <span class="preprocessor">#include "<a class="code" href="data_8h.html" title="Class to deal with pre-saved data files.">data.h</a>"</span> <a name="l00025"></a>00025 <span class="preprocessor">#include "<a class="code" href="endian_8h.html" title="Endian conversion macros.">endian.h</a>"</span> <a name="l00026"></a>00026 <span class="preprocessor">#include "<a class="code" href="error_8h.html" title="Common exception classes for the Barry library.">error.h</a>"</span> <a name="l00027"></a>00027 <span class="preprocessor">#include "debug.h"</span> <a name="l00028"></a>00028 <a name="l00029"></a>00029 <span class="preprocessor">#include <sstream></span> <a name="l00030"></a>00030 <a name="l00031"></a>00031 <span class="keyword">namespace </span>Barry { <span class="keyword">namespace </span>Protocol { <a name="l00032"></a>00032 <a name="l00033"></a>00033 <span class="comment">// This function is only valid for Packet, JLPacket, and JVMPacket structs,</span> <a name="l00034"></a>00034 <span class="comment">// as long as they don't differ from each other in header layout, when</span> <a name="l00035"></a>00035 <span class="comment">// it comes to the .size field. (see protostructs.h)</span> <a name="l00036"></a>00036 <span class="keywordtype">void</span> CheckSize(<span class="keyword">const</span> Data &packet, <span class="keywordtype">size_t</span> requiredsize) <a name="l00037"></a>00037 { <a name="l00038"></a>00038 <span class="keyword">const</span> Packet *p = (<span class="keyword">const</span> Packet *) packet.GetData(); <a name="l00039"></a>00039 <a name="l00040"></a>00040 <span class="comment">// when packets are larger than 0xFFFF bytes, packet->size is no</span> <a name="l00041"></a>00041 <span class="comment">// longer reliable, so we go with the Data class size</span> <a name="l00042"></a>00042 <span class="keywordflow">if</span>( (packet.GetSize() >= 4 && btohs(p->size) != packet.GetSize() && packet.GetSize() <= 0xFFFF) || <a name="l00043"></a>00043 packet.GetSize() < requiredsize ) <a name="l00044"></a>00044 <a name="l00045"></a>00045 { <a name="l00046"></a>00046 BadSize bs(packet.GetSize() >= 4 ? btohs(p->size) : 0, <a name="l00047"></a>00047 packet.GetSize(), requiredsize); <a name="l00048"></a>00048 eout(bs.what()); <a name="l00049"></a>00049 eout(packet); <a name="l00050"></a>00050 <span class="keywordflow">throw</span> bs; <a name="l00051"></a>00051 } <a name="l00052"></a>00052 } <a name="l00053"></a>00053 <a name="l00054"></a>00054 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> GetSize(<span class="keyword">const</span> Data &packet) <a name="l00055"></a>00055 { <a name="l00056"></a>00056 CheckSize(packet, 4); <a name="l00057"></a>00057 <a name="l00058"></a>00058 <span class="comment">// when packets are larger than 0xFFFF bytes, packet->size is no</span> <a name="l00059"></a>00059 <span class="comment">// longer reliable, so we go with the Data class size</span> <a name="l00060"></a>00060 <span class="keywordflow">if</span>( packet.GetSize() > 0xFFFF ) { <a name="l00061"></a>00061 <span class="keywordflow">return</span> packet.GetSize(); <a name="l00062"></a>00062 } <a name="l00063"></a>00063 <span class="keywordflow">else</span> { <a name="l00064"></a>00064 <span class="keyword">const</span> Packet *p = (<span class="keyword">const</span> Packet *) packet.GetData(); <a name="l00065"></a>00065 <span class="keywordflow">return</span> btohs(p->size); <a name="l00066"></a>00066 } <a name="l00067"></a>00067 } <a name="l00068"></a>00068 <a name="l00069"></a>00069 }} <span class="comment">// namespace Barry::Protocol</span> <a name="l00070"></a>00070 </pre></div></div> <hr size="1"><address style="text-align: right;"><small>Generated on Tue Mar 1 17:50:15 2011 for Barry by <a href="http://www.doxygen.org/index.html"> <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address> </body> </html>