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libdtn-devel-2.6.0-2mdv2009.1.i586.rpm

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<h1>APIBlockProcessor.cc</h1><a href="APIBlockProcessor_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"> *    Copyright 2006 Intel Corporation</span>
<a name="l00003"></a>00003 <span class="comment"> * </span>
<a name="l00004"></a>00004 <span class="comment"> *    Licensed under the Apache License, Version 2.0 (the "License");</span>
<a name="l00005"></a>00005 <span class="comment"> *    you may not use this file except in compliance with the License.</span>
<a name="l00006"></a>00006 <span class="comment"> *    You may obtain a copy of the License at</span>
<a name="l00007"></a>00007 <span class="comment"> * </span>
<a name="l00008"></a>00008 <span class="comment"> *        http://www.apache.org/licenses/LICENSE-2.0</span>
<a name="l00009"></a>00009 <span class="comment"> * </span>
<a name="l00010"></a>00010 <span class="comment"> *    Unless required by applicable law or agreed to in writing, software</span>
<a name="l00011"></a>00011 <span class="comment"> *    distributed under the License is distributed on an "AS IS" BASIS,</span>
<a name="l00012"></a>00012 <span class="comment"> *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
<a name="l00013"></a>00013 <span class="comment"> *    See the License for the specific language governing permissions and</span>
<a name="l00014"></a>00014 <span class="comment"> *    limitations under the License.</span>
<a name="l00015"></a>00015 <span class="comment"> */</span>
<a name="l00016"></a>00016 
<a name="l00017"></a>00017 <span class="preprocessor">#ifdef HAVE_CONFIG_H</span>
<a name="l00018"></a>00018 <span class="preprocessor"></span><span class="preprocessor">#  include &lt;<a class="code" href="dtn-config_8h.html">dtn-config.h</a>&gt;</span>
<a name="l00019"></a>00019 <span class="preprocessor">#endif</span>
<a name="l00020"></a>00020 <span class="preprocessor"></span>
<a name="l00021"></a>00021 <span class="preprocessor">#include "<a class="code" href="APIBlockProcessor_8h.html">APIBlockProcessor.h</a>"</span>
<a name="l00022"></a>00022 
<a name="l00023"></a>00023 <span class="preprocessor">#include "<a class="code" href="BlockInfo_8h.html">BlockInfo.h</a>"</span>
<a name="l00024"></a>00024 <span class="preprocessor">#include "<a class="code" href="BundleProtocol_8h.html">BundleProtocol.h</a>"</span>
<a name="l00025"></a>00025 
<a name="l00026"></a>00026 <span class="keyword">namespace </span>dtn {
<a name="l00027"></a>00027 
<a name="l00028"></a>00028 <span class="keyword">template</span> &lt;&gt; APIBlockProcessor*
<a name="l00029"></a>00029 oasys::Singleton&lt;APIBlockProcessor&gt;::instance_ = NULL;
<a name="l00030"></a>00030         
<a name="l00031"></a>00031 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00032"></a><a class="code" href="classdtn_1_1APIBlockProcessor.html#b40aac6e3b39add4ac8c7c1ef28250b7">00032</a> <a class="code" href="classdtn_1_1APIBlockProcessor.html#b40aac6e3b39add4ac8c7c1ef28250b7" title="Constructor.">APIBlockProcessor::APIBlockProcessor</a>() :
<a name="l00033"></a>00033         <a class="code" href="classdtn_1_1BlockProcessor.html" title="Base class for the protocol handling of bundle blocks, including the core primary...">BlockProcessor</a>(<a class="code" href="classdtn_1_1BundleProtocol.html" title="Centralized class used to convert a Bundle to / from the bundle protocol specification...">BundleProtocol</a>::API_EXTENSION_BLOCK)
<a name="l00034"></a>00034 {
<a name="l00035"></a>00035 }
<a name="l00036"></a>00036 
<a name="l00037"></a>00037 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00038"></a>00038 <span class="keywordtype">int</span>
<a name="l00039"></a><a class="code" href="classdtn_1_1APIBlockProcessor.html#f1f1e31555a6065383178d8f2b009a39">00039</a> <a class="code" href="classdtn_1_1APIBlockProcessor.html#f1f1e31555a6065383178d8f2b009a39" title="Virtual from BlockProcessor.">APIBlockProcessor::consume</a>(<a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>* bundle,
<a name="l00040"></a>00040                            <a class="code" href="classdtn_1_1BlockInfo.html" title="Class used to store unparsed bundle blocks and associated metadata about them.">BlockInfo</a>* block,
<a name="l00041"></a>00041                            u_char* <a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>,
<a name="l00042"></a>00042                            <span class="keywordtype">size_t</span> <a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a>)
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044     (void)bundle;
<a name="l00045"></a>00045     (void)block;
<a name="l00046"></a>00046     (void)buf;
<a name="l00047"></a>00047     (void)len;
<a name="l00048"></a>00048 
<a name="l00049"></a>00049     <span class="keywordflow">return</span> -1;
<a name="l00050"></a>00050 }
<a name="l00051"></a>00051 
<a name="l00052"></a>00052 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00053"></a>00053 <span class="keywordtype">int</span>
<a name="l00054"></a><a class="code" href="classdtn_1_1APIBlockProcessor.html#b0b0e9cd6ba6360ecf479a4d0ced218f">00054</a> <a class="code" href="classdtn_1_1APIBlockProcessor.html#b0b0e9cd6ba6360ecf479a4d0ced218f" title="Virtual from BlockProcessor.">APIBlockProcessor::generate</a>(<span class="keyword">const</span> <a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>*  bundle,
<a name="l00055"></a>00055                             <a class="code" href="classdtn_1_1BlockInfoVec.html" title="Class for a vector of BlockInfo structures.">BlockInfoVec</a>*  xmit_blocks,
<a name="l00056"></a>00056                             <a class="code" href="classdtn_1_1BlockInfo.html" title="Class used to store unparsed bundle blocks and associated metadata about them.">BlockInfo</a>*     block,
<a name="l00057"></a>00057                             <span class="keyword">const</span> <a class="code" href="namespacedtn.html#6efb37e503f8062c537b022eb755b94e" title="Typedef for a reference on a link.">LinkRef</a>&amp; link,
<a name="l00058"></a>00058                             <span class="keywordtype">bool</span>           last)
<a name="l00059"></a>00059 {
<a name="l00060"></a>00060     (void)bundle;
<a name="l00061"></a>00061     (void)link;
<a name="l00062"></a>00062     
<a name="l00063"></a>00063     <span class="comment">// there must be a corresponding source block created at the API</span>
<a name="l00064"></a>00064     <span class="keyword">const</span> <a class="code" href="classdtn_1_1BlockInfo.html" title="Class used to store unparsed bundle blocks and associated metadata about them.">BlockInfo</a>* source = block-&gt;<a class="code" href="classdtn_1_1BlockInfo.html#f11df0a802e40fd503e49ee6580f585d" title="Accessors.">source</a>();
<a name="l00065"></a>00065     <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(source != NULL);
<a name="l00066"></a>00066     <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(source-&gt;<a class="code" href="classdtn_1_1BlockInfo.html#bc48fc2f7f543561e26a8a9e32aceda2" title="Accessors.">owner</a>() == <span class="keyword">this</span>);
<a name="l00067"></a>00067 
<a name="l00068"></a>00068     <span class="comment">// source block must include at least a block header, if not actual data</span>
<a name="l00069"></a>00069     <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(source-&gt;<a class="code" href="classdtn_1_1BlockInfo.html#40fee1299938523234d3ae8c80661e22" title="Accessors.">contents</a>().len() != 0);
<a name="l00070"></a>00070     <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(source-&gt;<a class="code" href="classdtn_1_1BlockInfo.html#590c483ae6cc403c5062b8b3acc51ae3" title="Accessors.">data_offset</a>() != 0);
<a name="l00071"></a>00071     
<a name="l00072"></a>00072     u_int8_t flags = source-&gt;<a class="code" href="classdtn_1_1BlockInfo.html#51f21d5cf4aef2550b605ab90961e045">flags</a>();
<a name="l00073"></a>00073     <span class="keywordflow">if</span> (last) {
<a name="l00074"></a>00074         flags |= <a class="code" href="classdtn_1_1BundleProtocol.html#cd56fabd4393bd86ffc295bafaba540b60a3533536c98ae651d4533edd238037">BundleProtocol::BLOCK_FLAG_LAST_BLOCK</a>;
<a name="l00075"></a>00075     } <span class="keywordflow">else</span> {
<a name="l00076"></a>00076         flags &amp;= ~<a class="code" href="classdtn_1_1BundleProtocol.html" title="Centralized class used to convert a Bundle to / from the bundle protocol specification...">BundleProtocol</a>::BLOCK_FLAG_LAST_BLOCK;
<a name="l00077"></a>00077     }
<a name="l00078"></a>00078 
<a name="l00079"></a>00079     <a class="code" href="classdtn_1_1BlockProcessor.html#c08f7b82f6049f30710a5dcdebb61ce7" title="Generate the standard preamble for the given block type, flags, EID-list and content...">generate_preamble</a>(xmit_blocks, block, source-&gt;<a class="code" href="classdtn_1_1BlockInfo.html#46e4157d30528eae60a1cd240e58b495">type</a>(), flags, source-&gt;<a class="code" href="classdtn_1_1BlockInfo.html#cb7676dfe53630699317388ad32e8d99" title="Accessors.">data_length</a>());
<a name="l00080"></a>00080     <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(block-&gt;<a class="code" href="classdtn_1_1BlockInfo.html#590c483ae6cc403c5062b8b3acc51ae3" title="Accessors.">data_offset</a>() == source-&gt;<a class="code" href="classdtn_1_1BlockInfo.html#590c483ae6cc403c5062b8b3acc51ae3" title="Accessors.">data_offset</a>());
<a name="l00081"></a>00081     <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(block-&gt;<a class="code" href="classdtn_1_1BlockInfo.html#cb7676dfe53630699317388ad32e8d99" title="Accessors.">data_length</a>() == source-&gt;<a class="code" href="classdtn_1_1BlockInfo.html#cb7676dfe53630699317388ad32e8d99" title="Accessors.">data_length</a>());
<a name="l00082"></a>00082     
<a name="l00083"></a>00083     <a class="code" href="classdtn_1_1BlockInfo.html#369e8412fcff682247168dbc4776ded2" title="To store the formatted block data, we use a scratch buffer with 64 bytes of static...">BlockInfo::DataBuffer</a>* contents = block-&gt;<a class="code" href="classdtn_1_1BlockInfo.html#2b1a3f8f9c10d722bc4313781aac8e19" title="Mutating accessors.">writable_contents</a>();
<a name="l00084"></a>00084     contents-&gt;reserve(block-&gt;<a class="code" href="classdtn_1_1BlockInfo.html#2045184fe07026a47e1226bf7142f89a" title="Accessors.">full_length</a>());
<a name="l00085"></a>00085     memcpy(contents-&gt;buf()          + block-&gt;<a class="code" href="classdtn_1_1BlockInfo.html#590c483ae6cc403c5062b8b3acc51ae3" title="Accessors.">data_offset</a>(),
<a name="l00086"></a>00086            source-&gt;<a class="code" href="classdtn_1_1BlockInfo.html#40fee1299938523234d3ae8c80661e22" title="Accessors.">contents</a>().buf() + block-&gt;<a class="code" href="classdtn_1_1BlockInfo.html#590c483ae6cc403c5062b8b3acc51ae3" title="Accessors.">data_offset</a>(),
<a name="l00087"></a>00087            block-&gt;<a class="code" href="classdtn_1_1BlockInfo.html#cb7676dfe53630699317388ad32e8d99" title="Accessors.">data_length</a>());
<a name="l00088"></a>00088     contents-&gt;set_len(block-&gt;<a class="code" href="classdtn_1_1BlockInfo.html#2045184fe07026a47e1226bf7142f89a" title="Accessors.">full_length</a>());
<a name="l00089"></a>00089     
<a name="l00090"></a>00090     <span class="keywordflow">return</span> <a class="code" href="BlockProcessor_8h.html#446572d61c813971cb4d5ce4ee1b9c0b">BP_SUCCESS</a>;
<a name="l00091"></a>00091 }
<a name="l00092"></a>00092 
<a name="l00093"></a>00093 } <span class="comment">// namespace dtn</span>
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