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<h1>BlockProcessor.cc</h1><a href="BlockProcessor_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 <<a class="code" href="dtn-config_8h.html">dtn-config.h</a>></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 <oasys/debug/Log.h></span>
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="preprocessor">#include "<a class="code" href="BlockProcessor_8h.html">BlockProcessor.h</a>"</span>
<a name="l00024"></a>00024 <span class="preprocessor">#include "<a class="code" href="BlockInfo_8h.html">BlockInfo.h</a>"</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include "<a class="code" href="bundling_2Bundle_8h.html">Bundle.h</a>"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "<a class="code" href="SDNV_8h.html">SDNV.h</a>"</span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="keyword">namespace </span>dtn {
<a name="l00029"></a>00029
<a name="l00030"></a><a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">00030</a> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">log</a> = <span class="stringliteral">"/dtn/bundle/protocol"</span>;
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00033"></a><a class="code" href="classdtn_1_1BlockProcessor.html#b1578b54c23dee910a62937b5c4f9484">00033</a> <a class="code" href="classdtn_1_1BlockProcessor.html#b1578b54c23dee910a62937b5c4f9484" title="Constructor that takes the block typecode.">BlockProcessor::BlockProcessor</a>(<span class="keywordtype">int</span> block_type)
<a name="l00034"></a>00034 : block_type_(block_type)
<a name="l00035"></a>00035 {
<a name="l00036"></a>00036 <span class="comment">// quiet down non-debugging build</span>
<a name="l00037"></a>00037 (void)<a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">log</a>;
<a name="l00038"></a>00038 }
<a name="l00039"></a>00039
<a name="l00040"></a>00040 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00041"></a><a class="code" href="classdtn_1_1BlockProcessor.html#bee24525fc2b941b4849985b1397f699">00041</a> <a class="code" href="classdtn_1_1BlockProcessor.html#bee24525fc2b941b4849985b1397f699" title="Virtual destructor.">BlockProcessor::~BlockProcessor</a>()
<a name="l00042"></a>00042 {
<a name="l00043"></a>00043 }
<a name="l00044"></a>00044
<a name="l00045"></a>00045 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00046"></a>00046 <span class="keywordtype">int</span>
<a name="l00047"></a><a class="code" href="classdtn_1_1BlockProcessor.html#16d1b8a2805b0888536bd001ce5e9e5b">00047</a> <a class="code" href="classdtn_1_1BlockProcessor.html#16d1b8a2805b0888536bd001ce5e9e5b" title="Consume a block preamble consisting of type, flags(SDNV), EID-list (composite field...">BlockProcessor::consume_preamble</a>(<a class="code" href="classdtn_1_1BlockInfoVec.html" title="Class for a vector of BlockInfo structures.">BlockInfoVec</a>* recv_blocks,
<a name="l00048"></a>00048 <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="l00049"></a>00049 u_char* <a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>,
<a name="l00050"></a>00050 <span class="keywordtype">size_t</span> <a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a>,
<a name="l00051"></a>00051 u_int64_t* flagp)
<a name="l00052"></a>00052 {
<a name="l00053"></a>00053 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">log</a> = <span class="stringliteral">"/dtn/bundle/protocol"</span>;
<a name="l00054"></a>00054 <span class="keywordtype">int</span> sdnv_len;
<a name="l00055"></a>00055 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(! block-><a class="code" href="classdtn_1_1BlockInfo.html#a70c73cf28ec51a265dc5ac077c56975" title="Accessors.">complete</a>());
<a name="l00056"></a>00056 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(block-><a class="code" href="classdtn_1_1BlockInfo.html#590c483ae6cc403c5062b8b3acc51ae3" title="Accessors.">data_offset</a>() == 0);
<a name="l00057"></a>00057
<a name="l00058"></a>00058 <span class="comment">// The block info buffer usually will already contain enough space</span>
<a name="l00059"></a>00059 <span class="comment">// for the preamble in the static part of the scratch buffer, but the </span>
<a name="l00060"></a>00060 <span class="comment">// presence of an EID-ref-list might cause it to be bigger.</span>
<a name="l00061"></a>00061 <span class="comment">// So we'll copy up to what will fit in the static part, or</span>
<a name="l00062"></a>00062 <span class="comment">// expand the buffer if it is already full. </span>
<a name="l00063"></a>00063 <span class="comment">// Actually, we will probably never get here, as doing do</span>
<a name="l00064"></a>00064 <span class="comment">// would mean that there were about fifteen EID refs in the preamble.</span>
<a name="l00065"></a>00065 <span class="keywordflow">if</span> ( block-><a class="code" href="classdtn_1_1BlockInfo.html#40fee1299938523234d3ae8c80661e22" title="Accessors.">contents</a>().nfree() == 0 ) {
<a name="l00066"></a>00066 block-><a class="code" href="classdtn_1_1BlockInfo.html#2b1a3f8f9c10d722bc4313781aac8e19" title="Mutating accessors.">writable_contents</a>()->reserve(block-><a class="code" href="classdtn_1_1BlockInfo.html#40fee1299938523234d3ae8c80661e22" title="Accessors.">contents</a>().len() + 64);
<a name="l00067"></a>00067 }
<a name="l00068"></a>00068
<a name="l00069"></a>00069 <span class="keywordtype">size_t</span> max_preamble = block-><a class="code" href="classdtn_1_1BlockInfo.html#40fee1299938523234d3ae8c80661e22" title="Accessors.">contents</a>().buf_len();
<a name="l00070"></a>00070 <span class="keywordtype">size_t</span> prev_consumed = block-><a class="code" href="classdtn_1_1BlockInfo.html#40fee1299938523234d3ae8c80661e22" title="Accessors.">contents</a>().len();
<a name="l00071"></a>00071 <span class="keywordtype">size_t</span> tocopy = std::min(len, max_preamble - prev_consumed);
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(max_preamble > prev_consumed);
<a name="l00074"></a>00074 <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-><a class="code" href="classdtn_1_1BlockInfo.html#2b1a3f8f9c10d722bc4313781aac8e19" title="Mutating accessors.">writable_contents</a>();
<a name="l00075"></a>00075 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(contents->nfree() >= tocopy);
<a name="l00076"></a>00076 memcpy(contents->end(), buf, tocopy);
<a name="l00077"></a>00077 contents->set_len(contents->len() + tocopy);
<a name="l00078"></a>00078
<a name="l00079"></a>00079 <span class="comment">// Make sure we have at least one byte of sdnv before trying to</span>
<a name="l00080"></a>00080 <span class="comment">// parse it.</span>
<a name="l00081"></a>00081 <span class="keywordflow">if</span> (contents->len() <= <a class="code" href="classdtn_1_1BundleProtocol.html#45c131425fd4c84700dcfe7733c11376">BundleProtocol::PREAMBLE_FIXED_LENGTH</a>) {
<a name="l00082"></a>00082 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(tocopy == len);
<a name="l00083"></a>00083 <span class="keywordflow">return</span> len;
<a name="l00084"></a>00084 }
<a name="l00085"></a>00085
<a name="l00086"></a>00086 <span class="keywordtype">size_t</span> buf_offset = <a class="code" href="classdtn_1_1BundleProtocol.html#45c131425fd4c84700dcfe7733c11376">BundleProtocol::PREAMBLE_FIXED_LENGTH</a>;
<a name="l00087"></a>00087 u_int64_t flags;
<a name="l00088"></a>00088
<a name="l00089"></a>00089 <span class="comment">// Now we try decoding the sdnv that contains the block processing</span>
<a name="l00090"></a>00090 <span class="comment">// flags. If we can't, then we have a partial preamble, so we can</span>
<a name="l00091"></a>00091 <span class="comment">// assert that the whole incoming buffer was consumed.</span>
<a name="l00092"></a>00092 sdnv_len = <a class="code" href="SDNV_8cc.html#151d178617a7c2f598cfd7630ebeb7b4">SDNV::decode</a>(contents->buf() + buf_offset,
<a name="l00093"></a>00093 contents->len() - buf_offset,
<a name="l00094"></a>00094 &flags);
<a name="l00095"></a>00095 <span class="keywordflow">if</span> (sdnv_len == -1) {
<a name="l00096"></a>00096 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(tocopy == len);
<a name="l00097"></a>00097 <span class="keywordflow">return</span> len;
<a name="l00098"></a>00098 }
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="keywordflow">if</span> (flagp != NULL)
<a name="l00101"></a>00101 *flagp = flags;
<a name="l00102"></a>00102
<a name="l00103"></a>00103 buf_offset += sdnv_len;
<a name="l00104"></a>00104
<a name="l00105"></a>00105 <span class="comment">// point at the local dictionary</span>
<a name="l00106"></a>00106 <a class="code" href="classdtn_1_1Dictionary.html" title="Simple data structure to handle a dictionary data structure, as specified by the...">Dictionary</a>* dict = recv_blocks-><a class="code" href="classdtn_1_1BlockInfoVec.html#dfd7265c46dba7a323f99a304332506e" title="Return the dictionary.">dict</a>();
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <span class="comment">// Now we try decoding the EID-references field, if it is present.</span>
<a name="l00109"></a>00109 <span class="comment">// As with the flags, if we don't finish then we have a partial</span>
<a name="l00110"></a>00110 <span class="comment">// preamble and will try again when we get more, so we first</span>
<a name="l00111"></a>00111 <span class="comment">// construct a temporary eid list and then only assign it to the</span>
<a name="l00112"></a>00112 <span class="comment">// block if we've parsed the whole preamble.</span>
<a name="l00113"></a>00113 <span class="comment">//</span>
<a name="l00114"></a>00114 <span class="comment">// We assert that the whole incoming buffer was consumed.</span>
<a name="l00115"></a>00115 u_int64_t eid_ref_count = 0LLU;
<a name="l00116"></a>00116 u_int64_t scheme_offset;
<a name="l00117"></a>00117 u_int64_t ssp_offset;
<a name="l00118"></a>00118
<a name="l00119"></a>00119 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(block-><a class="code" href="classdtn_1_1BlockInfo.html#b20777efd3367156feb424643fc089e4" title="Accessors.">eid_list</a>().empty());
<a name="l00120"></a>00120 <a class="code" href="classdtn_1_1EndpointIDVector.html" title="A (serializable) vector of endpoint ids.">EndpointIDVector</a> eid_list;
<a name="l00121"></a>00121
<a name="l00122"></a>00122 <span class="keywordflow">if</span> ( flags & <a class="code" href="classdtn_1_1BundleProtocol.html#cd56fabd4393bd86ffc295bafaba540b6616947d5db3ac647eeb6d6f0411a593">BundleProtocol::BLOCK_FLAG_EID_REFS</a> ) {
<a name="l00123"></a>00123 sdnv_len = <a class="code" href="SDNV_8cc.html#151d178617a7c2f598cfd7630ebeb7b4">SDNV::decode</a>(contents->buf() + buf_offset,
<a name="l00124"></a>00124 contents->len() - buf_offset,
<a name="l00125"></a>00125 &eid_ref_count);
<a name="l00126"></a>00126 <span class="keywordflow">if</span> (sdnv_len == -1) {
<a name="l00127"></a>00127 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(tocopy == len);
<a name="l00128"></a>00128 <span class="keywordflow">return</span> len;
<a name="l00129"></a>00129 }
<a name="l00130"></a>00130
<a name="l00131"></a>00131 buf_offset += sdnv_len;
<a name="l00132"></a>00132
<a name="l00133"></a>00133 <span class="keywordflow">for</span> ( u_int32_t i = 0; i < eid_ref_count; ++i ) {
<a name="l00134"></a>00134 <span class="comment">// Now we try decoding the sdnv pair with the offsets</span>
<a name="l00135"></a>00135 sdnv_len = <a class="code" href="SDNV_8cc.html#151d178617a7c2f598cfd7630ebeb7b4">SDNV::decode</a>(contents->buf() + buf_offset,
<a name="l00136"></a>00136 contents->len() - buf_offset,
<a name="l00137"></a>00137 &scheme_offset);
<a name="l00138"></a>00138 <span class="keywordflow">if</span> (sdnv_len == -1) {
<a name="l00139"></a>00139 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(tocopy == len);
<a name="l00140"></a>00140 <span class="keywordflow">return</span> len;
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142 buf_offset += sdnv_len;
<a name="l00143"></a>00143
<a name="l00144"></a>00144 sdnv_len = <a class="code" href="SDNV_8cc.html#151d178617a7c2f598cfd7630ebeb7b4">SDNV::decode</a>(contents->buf() + buf_offset,
<a name="l00145"></a>00145 contents->len() - buf_offset,
<a name="l00146"></a>00146 &ssp_offset);
<a name="l00147"></a>00147 <span class="keywordflow">if</span> (sdnv_len == -1) {
<a name="l00148"></a>00148 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(tocopy == len);
<a name="l00149"></a>00149 <span class="keywordflow">return</span> len;
<a name="l00150"></a>00150 }
<a name="l00151"></a>00151 buf_offset += sdnv_len;
<a name="l00152"></a>00152
<a name="l00153"></a>00153 <a class="code" href="classdtn_1_1EndpointID.html">EndpointID</a> eid;
<a name="l00154"></a>00154 dict-><a class="code" href="classdtn_1_1Dictionary.html#192d234238daaefda8062da1d16836ad" title="Create an eid from the dictionary, given the offsets.">extract_eid</a>(&eid, scheme_offset, ssp_offset);
<a name="l00155"></a>00155 eid_list.push_back(eid);
<a name="l00156"></a>00156 }
<a name="l00157"></a>00157 }
<a name="l00158"></a>00158
<a name="l00159"></a>00159 <span class="comment">// Now we try decoding the sdnv that contains the actual block</span>
<a name="l00160"></a>00160 <span class="comment">// length. If we can't, then we have a partial preamble, so we can</span>
<a name="l00161"></a>00161 <span class="comment">// assert that the whole incoming buffer was consumed.</span>
<a name="l00162"></a>00162 u_int64_t block_len;
<a name="l00163"></a>00163 sdnv_len = <a class="code" href="SDNV_8cc.html#151d178617a7c2f598cfd7630ebeb7b4">SDNV::decode</a>(contents->buf() + buf_offset,
<a name="l00164"></a>00164 contents->len() - buf_offset,
<a name="l00165"></a>00165 &block_len);
<a name="l00166"></a>00166 <span class="keywordflow">if</span> (sdnv_len == -1) {
<a name="l00167"></a>00167 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(tocopy == len);
<a name="l00168"></a>00168 <span class="keywordflow">return</span> len;
<a name="l00169"></a>00169 }
<a name="l00170"></a>00170
<a name="l00171"></a>00171 <span class="keywordflow">if</span> (block_len > 0xFFFFFFFFLL) {
<a name="l00172"></a>00172 <span class="comment">// XXX/demmer implement big blocks</span>
<a name="l00173"></a>00173 <a class="code" href="SDNV_8cc.html#3f24cadc9f28aba33472df0500092dcb">log_err_p</a>(log, <span class="stringliteral">"overflow in SDNV value for block type 0x%x"</span>,
<a name="l00174"></a>00174 *contents->buf());
<a name="l00175"></a>00175 <span class="keywordflow">return</span> -1;
<a name="l00176"></a>00176 }
<a name="l00177"></a>00177
<a name="l00178"></a>00178 buf_offset += sdnv_len;
<a name="l00179"></a>00179
<a name="l00180"></a>00180 <span class="comment">// We've successfully consumed the preamble so initialize the</span>
<a name="l00181"></a>00181 <span class="comment">// data_length and data_offset fields of the block and adjust the</span>
<a name="l00182"></a>00182 <span class="comment">// length field of the contents buffer to include only the</span>
<a name="l00183"></a>00183 <span class="comment">// preamble part (even though a few more bytes might be in there.</span>
<a name="l00184"></a>00184 block-><a class="code" href="classdtn_1_1BlockInfo.html#38d215397b046a403f252512227c29a9" title="Mutating accessors.">set_data_length</a>(static_cast<u_int32_t>(block_len));
<a name="l00185"></a>00185 block-><a class="code" href="classdtn_1_1BlockInfo.html#67e9f36d2da267e95270a4dd7d0aa65e" title="Mutating accessors.">set_data_offset</a>(buf_offset);
<a name="l00186"></a>00186 contents->set_len(buf_offset);
<a name="l00187"></a>00187
<a name="l00188"></a>00188 block-><a class="code" href="classdtn_1_1BlockInfo.html#371f09d4cb7cbd6c6cd60a7823f1630a" title="Mutating accessors.">set_eid_list</a>(eid_list);
<a name="l00189"></a>00189
<a name="l00190"></a>00190 log_debug_p(log, <span class="stringliteral">"BlockProcessor type 0x%x "</span>
<a name="l00191"></a>00191 <span class="stringliteral">"consumed preamble %zu/%u for block: "</span>
<a name="l00192"></a>00192 <span class="stringliteral">"data_offset %u data_length %u eid_ref_count %llu"</span>,
<a name="l00193"></a>00193 <a class="code" href="classdtn_1_1BlockProcessor.html#5a5794eea1bd61dfbef1a691ef9f8d97" title="Accessors.">block_type</a>(), buf_offset + prev_consumed,
<a name="l00194"></a>00194 block-><a class="code" href="classdtn_1_1BlockInfo.html#2045184fe07026a47e1226bf7142f89a" title="Accessors.">full_length</a>(),
<a name="l00195"></a>00195 block-><a class="code" href="classdtn_1_1BlockInfo.html#590c483ae6cc403c5062b8b3acc51ae3" title="Accessors.">data_offset</a>(), block-><a class="code" href="classdtn_1_1BlockInfo.html#cb7676dfe53630699317388ad32e8d99" title="Accessors.">data_length</a>(),
<a name="l00196"></a>00196 U64FMT(eid_ref_count));
<a name="l00197"></a>00197
<a name="l00198"></a>00198 <span class="comment">// Finally, be careful to return only the amount of the buffer</span>
<a name="l00199"></a>00199 <span class="comment">// that we needed to complete the preamble.</span>
<a name="l00200"></a>00200 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(buf_offset > prev_consumed);
<a name="l00201"></a>00201 <span class="keywordflow">return</span> buf_offset - prev_consumed;
<a name="l00202"></a>00202 }
<a name="l00203"></a>00203
<a name="l00204"></a>00204 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00205"></a>00205 <span class="keywordtype">void</span>
<a name="l00206"></a><a class="code" href="classdtn_1_1BlockProcessor.html#c08f7b82f6049f30710a5dcdebb61ce7">00206</a> <a class="code" href="classdtn_1_1BlockProcessor.html#c08f7b82f6049f30710a5dcdebb61ce7" title="Generate the standard preamble for the given block type, flags, EID-list and content...">BlockProcessor::generate_preamble</a>(<a class="code" href="classdtn_1_1BlockInfoVec.html" title="Class for a vector of BlockInfo structures.">BlockInfoVec</a>* xmit_blocks,
<a name="l00207"></a>00207 <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="l00208"></a>00208 u_int8_t type,
<a name="l00209"></a>00209 u_int64_t flags,
<a name="l00210"></a>00210 u_int64_t data_length)
<a name="l00211"></a>00211 {
<a name="l00212"></a>00212 <span class="keywordtype">char</span> work[1000];
<a name="l00213"></a>00213 <span class="keywordtype">char</span>* ptr = work;
<a name="l00214"></a>00214 <span class="keywordtype">size_t</span> <a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a> = <span class="keyword">sizeof</span>(work);
<a name="l00215"></a>00215 int32_t sdnv_len; <span class="comment">// must be signed</span>
<a name="l00216"></a>00216 u_int32_t scheme_offset;
<a name="l00217"></a>00217 u_int32_t ssp_offset;
<a name="l00218"></a>00218
<a name="l00219"></a>00219 <span class="comment">// point at the local dictionary</span>
<a name="l00220"></a>00220 <a class="code" href="classdtn_1_1Dictionary.html" title="Simple data structure to handle a dictionary data structure, as specified by the...">Dictionary</a>* dict = xmit_blocks-><a class="code" href="classdtn_1_1BlockInfoVec.html#dfd7265c46dba7a323f99a304332506e" title="Return the dictionary.">dict</a>();
<a name="l00221"></a>00221
<a name="l00222"></a>00222 <span class="comment">// see if we have EIDs in the list, and process them</span>
<a name="l00223"></a>00223 u_int32_t eid_count = block-><a class="code" href="classdtn_1_1BlockInfo.html#b20777efd3367156feb424643fc089e4" title="Accessors.">eid_list</a>().size();
<a name="l00224"></a>00224 <span class="keywordflow">if</span> ( eid_count > 0 ) {
<a name="l00225"></a>00225 flags |= <a class="code" href="classdtn_1_1BundleProtocol.html#cd56fabd4393bd86ffc295bafaba540b6616947d5db3ac647eeb6d6f0411a593">BundleProtocol::BLOCK_FLAG_EID_REFS</a>;
<a name="l00226"></a>00226 sdnv_len = <a class="code" href="SDNV_8cc.html#21c54ef3a5345647ad1cada265a03eb4">SDNV::encode</a>(eid_count, ptr, len);
<a name="l00227"></a>00227 ptr += sdnv_len;
<a name="l00228"></a>00228 len -= sdnv_len;
<a name="l00229"></a>00229 EndpointIDVector::const_iterator iter = block-><a class="code" href="classdtn_1_1BlockInfo.html#b20777efd3367156feb424643fc089e4" title="Accessors.">eid_list</a>().begin();
<a name="l00230"></a>00230 <span class="keywordflow">for</span> ( ; iter < block-><a class="code" href="classdtn_1_1BlockInfo.html#b20777efd3367156feb424643fc089e4" title="Accessors.">eid_list</a>().end(); ++iter ) {
<a name="l00231"></a>00231 dict-><a class="code" href="classdtn_1_1Dictionary.html#b08d7b9e5ce7bb481827a78107f50b3a" title="Add the scheme and ssp of the given endpoint id to the dictionary.">add_eid</a>(*iter);
<a name="l00232"></a>00232 dict-><a class="code" href="classdtn_1_1Dictionary.html#20b04310b304f88c32302b64b75853de" title="Look up the given eid in the dictionary, returning true and assigning the offsets...">get_offsets</a>(*iter, &scheme_offset, &ssp_offset);
<a name="l00233"></a>00233 sdnv_len = <a class="code" href="SDNV_8cc.html#21c54ef3a5345647ad1cada265a03eb4">SDNV::encode</a>(scheme_offset, ptr, len);
<a name="l00234"></a>00234 ptr += sdnv_len;
<a name="l00235"></a>00235 len -= sdnv_len;
<a name="l00236"></a>00236 sdnv_len = <a class="code" href="SDNV_8cc.html#21c54ef3a5345647ad1cada265a03eb4">SDNV::encode</a>(ssp_offset, ptr, len);
<a name="l00237"></a>00237 ptr += sdnv_len;
<a name="l00238"></a>00238 len -= sdnv_len;
<a name="l00239"></a>00239 }
<a name="l00240"></a>00240 }
<a name="l00241"></a>00241
<a name="l00242"></a>00242 <span class="keywordtype">size_t</span> eid_field_len = ptr - work; <span class="comment">// size of the data in the work buffer</span>
<a name="l00243"></a>00243
<a name="l00244"></a>00244 <span class="keywordtype">size_t</span> flag_sdnv_len = <a class="code" href="SDNV_8cc.html#46f4c114c92230c80f6714318251b542">SDNV::encoding_len</a>(flags);
<a name="l00245"></a>00245 <span class="keywordtype">size_t</span> length_sdnv_len = <a class="code" href="SDNV_8cc.html#46f4c114c92230c80f6714318251b542">SDNV::encoding_len</a>(data_length);
<a name="l00246"></a>00246 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(block-><a class="code" href="classdtn_1_1BlockInfo.html#40fee1299938523234d3ae8c80661e22" title="Accessors.">contents</a>().len() == 0);
<a name="l00247"></a>00247 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(block-><a class="code" href="classdtn_1_1BlockInfo.html#40fee1299938523234d3ae8c80661e22" title="Accessors.">contents</a>().buf_len() >= <a class="code" href="classdtn_1_1BundleProtocol.html#45c131425fd4c84700dcfe7733c11376">BundleProtocol::PREAMBLE_FIXED_LENGTH</a>
<a name="l00248"></a>00248 + flag_sdnv_len + eid_field_len + length_sdnv_len);
<a name="l00249"></a>00249
<a name="l00250"></a>00250 u_char* bp = block-><a class="code" href="classdtn_1_1BlockInfo.html#2b1a3f8f9c10d722bc4313781aac8e19" title="Mutating accessors.">writable_contents</a>()->buf();
<a name="l00251"></a>00251 len = block-><a class="code" href="classdtn_1_1BlockInfo.html#40fee1299938523234d3ae8c80661e22" title="Accessors.">contents</a>().buf_len();
<a name="l00252"></a>00252
<a name="l00253"></a>00253 *bp = type;
<a name="l00254"></a>00254 bp += <a class="code" href="classdtn_1_1BundleProtocol.html#45c131425fd4c84700dcfe7733c11376">BundleProtocol::PREAMBLE_FIXED_LENGTH</a>;
<a name="l00255"></a>00255 len -= <a class="code" href="classdtn_1_1BundleProtocol.html#45c131425fd4c84700dcfe7733c11376">BundleProtocol::PREAMBLE_FIXED_LENGTH</a>;
<a name="l00256"></a>00256
<a name="l00257"></a>00257 <a class="code" href="SDNV_8cc.html#21c54ef3a5345647ad1cada265a03eb4">SDNV::encode</a>(flags, bp, flag_sdnv_len);
<a name="l00258"></a>00258 bp += flag_sdnv_len;
<a name="l00259"></a>00259 len -= flag_sdnv_len;
<a name="l00260"></a>00260
<a name="l00261"></a>00261 memcpy(bp, work, eid_field_len);
<a name="l00262"></a>00262 bp += eid_field_len;
<a name="l00263"></a>00263 len -= eid_field_len;
<a name="l00264"></a>00264
<a name="l00265"></a>00265 <a class="code" href="SDNV_8cc.html#21c54ef3a5345647ad1cada265a03eb4">SDNV::encode</a>(data_length, bp, length_sdnv_len);
<a name="l00266"></a>00266 bp += length_sdnv_len;
<a name="l00267"></a>00267 len -= length_sdnv_len;
<a name="l00268"></a>00268
<a name="l00269"></a>00269 block-><a class="code" href="classdtn_1_1BlockInfo.html#38d215397b046a403f252512227c29a9" title="Mutating accessors.">set_data_length</a>(data_length);
<a name="l00270"></a>00270 u_int32_t offset = <a class="code" href="classdtn_1_1BundleProtocol.html#45c131425fd4c84700dcfe7733c11376">BundleProtocol::PREAMBLE_FIXED_LENGTH</a> +
<a name="l00271"></a>00271 flag_sdnv_len + eid_field_len + length_sdnv_len;
<a name="l00272"></a>00272 block-><a class="code" href="classdtn_1_1BlockInfo.html#67e9f36d2da267e95270a4dd7d0aa65e" title="Mutating accessors.">set_data_offset</a>(offset);
<a name="l00273"></a>00273 block-><a class="code" href="classdtn_1_1BlockInfo.html#2b1a3f8f9c10d722bc4313781aac8e19" title="Mutating accessors.">writable_contents</a>()->set_len(offset);
<a name="l00274"></a>00274
<a name="l00275"></a>00275 log_debug_p(<a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">log</a>, <span class="stringliteral">"BlockProcessor type 0x%x "</span>
<a name="l00276"></a>00276 <span class="stringliteral">"generated preamble for block type 0x%x flags 0x%llx: "</span>
<a name="l00277"></a>00277 <span class="stringliteral">"data_offset %u data_length %u eid_count %u"</span>,
<a name="l00278"></a>00278 <a class="code" href="classdtn_1_1BlockProcessor.html#5a5794eea1bd61dfbef1a691ef9f8d97" title="Accessors.">block_type</a>(), block-><a class="code" href="classdtn_1_1BlockInfo.html#46e4157d30528eae60a1cd240e58b495">type</a>(), U64FMT(block-><a class="code" href="classdtn_1_1BlockInfo.html#51f21d5cf4aef2550b605ab90961e045">flags</a>()),
<a name="l00279"></a>00279 block-><a class="code" href="classdtn_1_1BlockInfo.html#590c483ae6cc403c5062b8b3acc51ae3" title="Accessors.">data_offset</a>(), block-><a class="code" href="classdtn_1_1BlockInfo.html#cb7676dfe53630699317388ad32e8d99" title="Accessors.">data_length</a>(), eid_count);
<a name="l00280"></a>00280 }
<a name="l00281"></a>00281
<a name="l00282"></a>00282 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00283"></a>00283 <span class="keywordtype">int</span>
<a name="l00284"></a><a class="code" href="classdtn_1_1BlockProcessor.html#1f73d119593ef13da9c5ee845fd5ec00">00284</a> <a class="code" href="classdtn_1_1BlockProcessor.html#1f73d119593ef13da9c5ee845fd5ec00" title="First callback for parsing blocks that is expected to append a chunk of the given...">BlockProcessor::consume</a>(<a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>* bundle,
<a name="l00285"></a>00285 <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="l00286"></a>00286 u_char* <a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>,
<a name="l00287"></a>00287 <span class="keywordtype">size_t</span> <a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a>)
<a name="l00288"></a>00288 {
<a name="l00289"></a>00289 (void)bundle;
<a name="l00290"></a>00290
<a name="l00291"></a>00291 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">log</a> = <span class="stringliteral">"/dtn/bundle/protocol"</span>;
<a name="l00292"></a>00292 (void)log;
<a name="l00293"></a>00293
<a name="l00294"></a>00294 <span class="keywordtype">size_t</span> consumed = 0;
<a name="l00295"></a>00295
<a name="l00296"></a>00296 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(! block-><a class="code" href="classdtn_1_1BlockInfo.html#a70c73cf28ec51a265dc5ac077c56975" title="Accessors.">complete</a>());
<a name="l00297"></a>00297 <a class="code" href="classdtn_1_1BlockInfoVec.html" title="Class for a vector of BlockInfo structures.">BlockInfoVec</a>* recv_blocks = bundle-><a class="code" href="classdtn_1_1Bundle.html#5c48f51fba15c89a82d5d98c9881f0bd" title="Setters and mutable accessors.">mutable_recv_blocks</a>();
<a name="l00298"></a>00298
<a name="l00299"></a>00299 <span class="comment">// Check if we still need to consume the preamble by checking if</span>
<a name="l00300"></a>00300 <span class="comment">// the data_offset_ field is initialized in the block info</span>
<a name="l00301"></a>00301 <span class="comment">// structure.</span>
<a name="l00302"></a>00302 <span class="keywordflow">if</span> (block-><a class="code" href="classdtn_1_1BlockInfo.html#590c483ae6cc403c5062b8b3acc51ae3" title="Accessors.">data_offset</a>() == 0) {
<a name="l00303"></a>00303 <span class="keywordtype">int</span> cc = <a class="code" href="classdtn_1_1BlockProcessor.html#16d1b8a2805b0888536bd001ce5e9e5b" title="Consume a block preamble consisting of type, flags(SDNV), EID-list (composite field...">consume_preamble</a>(recv_blocks, block, buf, len);
<a name="l00304"></a>00304 <span class="keywordflow">if</span> (cc == -1) {
<a name="l00305"></a>00305 <span class="keywordflow">return</span> -1;
<a name="l00306"></a>00306 }
<a name="l00307"></a>00307
<a name="l00308"></a>00308 buf += cc;
<a name="l00309"></a>00309 len -= cc;
<a name="l00310"></a>00310
<a name="l00311"></a>00311 consumed += cc;
<a name="l00312"></a>00312 }
<a name="l00313"></a>00313
<a name="l00314"></a>00314 <span class="comment">// If we still don't know the data offset, we must have consumed</span>
<a name="l00315"></a>00315 <span class="comment">// the whole buffer</span>
<a name="l00316"></a>00316 <span class="keywordflow">if</span> (block-><a class="code" href="classdtn_1_1BlockInfo.html#590c483ae6cc403c5062b8b3acc51ae3" title="Accessors.">data_offset</a>() == 0) {
<a name="l00317"></a>00317 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(len == 0);
<a name="l00318"></a>00318 }
<a name="l00319"></a>00319
<a name="l00320"></a>00320 <span class="comment">// If the preamble is complete (i.e., data offset is non-zero) and</span>
<a name="l00321"></a>00321 <span class="comment">// the block's data length is zero, then mark the block as complete</span>
<a name="l00322"></a>00322 <span class="keywordflow">if</span> (block-><a class="code" href="classdtn_1_1BlockInfo.html#590c483ae6cc403c5062b8b3acc51ae3" title="Accessors.">data_offset</a>() != 0 && block-><a class="code" href="classdtn_1_1BlockInfo.html#cb7676dfe53630699317388ad32e8d99" title="Accessors.">data_length</a>() == 0) {
<a name="l00323"></a>00323 block-><a class="code" href="classdtn_1_1BlockInfo.html#78731d47494fb3e29e818379f627d3e0" title="Mutating accessors.">set_complete</a>(<span class="keyword">true</span>);
<a name="l00324"></a>00324 }
<a name="l00325"></a>00325
<a name="l00326"></a>00326 <span class="comment">// If there's nothing left to do, we can bail for now.</span>
<a name="l00327"></a>00327 <span class="keywordflow">if</span> (len == 0)
<a name="l00328"></a>00328 <span class="keywordflow">return</span> consumed;
<a name="l00329"></a>00329
<a name="l00330"></a>00330 <span class="comment">// Now make sure there's still something left to do for the block,</span>
<a name="l00331"></a>00331 <span class="comment">// otherwise it should have been marked as complete</span>
<a name="l00332"></a>00332 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(block-><a class="code" href="classdtn_1_1BlockInfo.html#cb7676dfe53630699317388ad32e8d99" title="Accessors.">data_length</a>() == 0 ||
<a name="l00333"></a>00333 block-><a class="code" href="classdtn_1_1BlockInfo.html#2045184fe07026a47e1226bf7142f89a" title="Accessors.">full_length</a>() > block-><a class="code" href="classdtn_1_1BlockInfo.html#40fee1299938523234d3ae8c80661e22" title="Accessors.">contents</a>().len());
<a name="l00334"></a>00334
<a name="l00335"></a>00335 <span class="comment">// make sure the contents buffer has enough space</span>
<a name="l00336"></a>00336 block-><a class="code" href="classdtn_1_1BlockInfo.html#2b1a3f8f9c10d722bc4313781aac8e19" title="Mutating accessors.">writable_contents</a>()->reserve(block-><a class="code" href="classdtn_1_1BlockInfo.html#2045184fe07026a47e1226bf7142f89a" title="Accessors.">full_length</a>());
<a name="l00337"></a>00337
<a name="l00338"></a>00338 <span class="keywordtype">size_t</span> rcvd = block-><a class="code" href="classdtn_1_1BlockInfo.html#40fee1299938523234d3ae8c80661e22" title="Accessors.">contents</a>().len();
<a name="l00339"></a>00339 <span class="keywordtype">size_t</span> remainder = block-><a class="code" href="classdtn_1_1BlockInfo.html#2045184fe07026a47e1226bf7142f89a" title="Accessors.">full_length</a>() - rcvd;
<a name="l00340"></a>00340 <span class="keywordtype">size_t</span> tocopy;
<a name="l00341"></a>00341
<a name="l00342"></a>00342 <span class="keywordflow">if</span> (len >= remainder) {
<a name="l00343"></a>00343 block-><a class="code" href="classdtn_1_1BlockInfo.html#78731d47494fb3e29e818379f627d3e0" title="Mutating accessors.">set_complete</a>(<span class="keyword">true</span>);
<a name="l00344"></a>00344 tocopy = remainder;
<a name="l00345"></a>00345 } <span class="keywordflow">else</span> {
<a name="l00346"></a>00346 tocopy = len;
<a name="l00347"></a>00347 }
<a name="l00348"></a>00348
<a name="l00349"></a>00349 <span class="comment">// copy in the data</span>
<a name="l00350"></a>00350 memcpy(block-><a class="code" href="classdtn_1_1BlockInfo.html#2b1a3f8f9c10d722bc4313781aac8e19" title="Mutating accessors.">writable_contents</a>()->end(), buf, tocopy);
<a name="l00351"></a>00351 block-><a class="code" href="classdtn_1_1BlockInfo.html#2b1a3f8f9c10d722bc4313781aac8e19" title="Mutating accessors.">writable_contents</a>()->set_len(rcvd + tocopy);
<a name="l00352"></a>00352 len -= tocopy;
<a name="l00353"></a>00353 consumed += tocopy;
<a name="l00354"></a>00354
<a name="l00355"></a>00355 log_debug_p(log, <span class="stringliteral">"BlockProcessor type 0x%x "</span>
<a name="l00356"></a>00356 <span class="stringliteral">"consumed %zu/%u for block type 0x%x (%s)"</span>,
<a name="l00357"></a>00357 <a class="code" href="classdtn_1_1BlockProcessor.html#5a5794eea1bd61dfbef1a691ef9f8d97" title="Accessors.">block_type</a>(), consumed, block-><a class="code" href="classdtn_1_1BlockInfo.html#2045184fe07026a47e1226bf7142f89a" title="Accessors.">full_length</a>(), block-><a class="code" href="classdtn_1_1BlockInfo.html#46e4157d30528eae60a1cd240e58b495">type</a>(),
<a name="l00358"></a>00358 block-><a class="code" href="classdtn_1_1BlockInfo.html#a70c73cf28ec51a265dc5ac077c56975" title="Accessors.">complete</a>() ? <span class="stringliteral">"complete"</span> : <span class="stringliteral">"not complete"</span>);
<a name="l00359"></a>00359
<a name="l00360"></a>00360 <span class="keywordflow">return</span> consumed;
<a name="l00361"></a>00361 }
<a name="l00362"></a>00362
<a name="l00363"></a>00363 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00364"></a>00364 <span class="keywordtype">bool</span>
<a name="l00365"></a><a class="code" href="classdtn_1_1BlockProcessor.html#14242dcdb094a179f718a5eaee23cabd">00365</a> <a class="code" href="classdtn_1_1BlockProcessor.html#14242dcdb094a179f718a5eaee23cabd" title="Validate the block.">BlockProcessor::validate</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="l00366"></a>00366 <a class="code" href="classdtn_1_1BlockInfoVec.html" title="Class for a vector of BlockInfo structures.">BlockInfoVec</a>* block_list,
<a name="l00367"></a>00367 <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="l00368"></a>00368 <a class="code" href="classdtn_1_1BundleProtocol.html#37b000d94172c06970bb8af32889f917" title="Bundle Status Report &quot;Reason Code&quot; flags.">status_report_reason_t</a>* reception_reason,
<a name="l00369"></a>00369 <a class="code" href="classdtn_1_1BundleProtocol.html#37b000d94172c06970bb8af32889f917" title="Bundle Status Report &quot;Reason Code&quot; flags.">status_report_reason_t</a>* deletion_reason)
<a name="l00370"></a>00370 {
<a name="l00371"></a>00371 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> * <a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">log</a> = <span class="stringliteral">"/dtn/bundle/protocol"</span>;
<a name="l00372"></a>00372 (void)block_list;
<a name="l00373"></a>00373 (void)reception_reason;
<a name="l00374"></a>00374
<a name="l00375"></a>00375 <span class="comment">// An administrative bundle MUST NOT contain an extension block</span>
<a name="l00376"></a>00376 <span class="comment">// with a processing flag that requires a reception status report</span>
<a name="l00377"></a>00377 <span class="comment">// be transmitted in the case of an error</span>
<a name="l00378"></a>00378 <span class="keywordflow">if</span> (bundle-><a class="code" href="classdtn_1_1Bundle.html#839db0b56b61020d9f2b3878e6c2d34a" title="Accessors.">is_admin</a>() &&
<a name="l00379"></a>00379 block-><a class="code" href="classdtn_1_1BlockInfo.html#46e4157d30528eae60a1cd240e58b495">type</a>() != <a class="code" href="classdtn_1_1BundleProtocol.html#54a44c247b3c20b4ed11e29494284ca753097979cfe600d2c1dfb5cf3629b195" title="INTERNAL ONLY -- NOT IN SPEC.">BundleProtocol::PRIMARY_BLOCK</a> &&
<a name="l00380"></a>00380 block-><a class="code" href="classdtn_1_1BlockInfo.html#51f21d5cf4aef2550b605ab90961e045">flags</a>() & <a class="code" href="classdtn_1_1BundleProtocol.html#cd56fabd4393bd86ffc295bafaba540b08e26de152eecfd35ff1081abf480309">BundleProtocol::BLOCK_FLAG_REPORT_ONERROR</a>) {
<a name="l00381"></a>00381 <a class="code" href="SDNV_8cc.html#3f24cadc9f28aba33472df0500092dcb">log_err_p</a>(log, <span class="stringliteral">"invalid block flag 0x%x for received admin bundle"</span>,
<a name="l00382"></a>00382 <a class="code" href="classdtn_1_1BundleProtocol.html#cd56fabd4393bd86ffc295bafaba540b08e26de152eecfd35ff1081abf480309">BundleProtocol::BLOCK_FLAG_REPORT_ONERROR</a>);
<a name="l00383"></a>00383 *deletion_reason = <a class="code" href="classdtn_1_1BundleProtocol.html#37b000d94172c06970bb8af32889f917a86c9900fe5641754acdcdb326b79b2c">BundleProtocol::REASON_BLOCK_UNINTELLIGIBLE</a>;
<a name="l00384"></a>00384 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00385"></a>00385 }
<a name="l00386"></a>00386
<a name="l00387"></a>00387 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00388"></a>00388 }
<a name="l00389"></a>00389
<a name="l00390"></a>00390 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00391"></a>00391 <span class="keywordtype">int</span>
<a name="l00392"></a><a class="code" href="classdtn_1_1BlockProcessor.html#95caddbca046da1a05538359c351f644">00392</a> <a class="code" href="classdtn_1_1BlockProcessor.html#95caddbca046da1a05538359c351f644" title="Perform any needed action in the case where a block/bundle has been reloaded from...">BlockProcessor::reload_post_process</a>(<a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>* bundle,
<a name="l00393"></a>00393 <a class="code" href="classdtn_1_1BlockInfoVec.html" title="Class for a vector of BlockInfo structures.">BlockInfoVec</a>* block_list,
<a name="l00394"></a>00394 <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="l00395"></a>00395 {
<a name="l00396"></a>00396 (void)bundle;
<a name="l00397"></a>00397 (void)block_list;
<a name="l00398"></a>00398 (void)block;
<a name="l00399"></a>00399
<a name="l00400"></a>00400 block-><a class="code" href="classdtn_1_1BlockInfo.html#a0d24ac3331dddcbd70fb9f4cceb086e" title="Mutating accessors.">set_reloaded</a>(<span class="keyword">false</span>);
<a name="l00401"></a>00401 <span class="keywordflow">return</span> 0;
<a name="l00402"></a>00402 }
<a name="l00403"></a>00403
<a name="l00404"></a>00404 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00405"></a>00405 <span class="keywordtype">int</span>
<a name="l00406"></a><a class="code" href="classdtn_1_1BlockProcessor.html#f7c21ecdcbbb4f2060c7f5f865415c48">00406</a> <a class="code" href="classdtn_1_1BlockProcessor.html#f7c21ecdcbbb4f2060c7f5f865415c48" title="First callback to generate blocks for the output pass.">BlockProcessor::prepare</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="l00407"></a>00407 <a class="code" href="classdtn_1_1BlockInfoVec.html" title="Class for a vector of BlockInfo structures.">BlockInfoVec</a>* xmit_blocks,
<a name="l00408"></a>00408 <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,
<a name="l00409"></a>00409 <span class="keyword">const</span> <a class="code" href="namespacedtn.html#6efb37e503f8062c537b022eb755b94e" title="Typedef for a reference on a link.">LinkRef</a>& link,
<a name="l00410"></a>00410 <a class="code" href="classdtn_1_1BlockInfo.html#3d0bc8cd207912ac5406fde3fc2c8d1c" title="List owner indicator (not transmitted).">list_owner_t</a> list)
<a name="l00411"></a>00411 {
<a name="l00412"></a>00412 (void)bundle;
<a name="l00413"></a>00413 (void)link;
<a name="l00414"></a>00414 (void)list;
<a name="l00415"></a>00415
<a name="l00416"></a>00416 <span class="comment">// Received blocks are added to the end of the list (which</span>
<a name="l00417"></a>00417 <span class="comment">// maintains the order they arrived in) but blocks from any other</span>
<a name="l00418"></a>00418 <span class="comment">// source are added after the primary block (that is, before the</span>
<a name="l00419"></a>00419 <span class="comment">// payload and the received blocks). This places them "outside"</span>
<a name="l00420"></a>00420 <span class="comment">// the original blocks.</span>
<a name="l00421"></a>00421 <span class="keywordflow">if</span> (list == <a class="code" href="classdtn_1_1BlockInfo.html#3d0bc8cd207912ac5406fde3fc2c8d1c988069568eb548f51e7c4b8120b6292f">BlockInfo::LIST_RECEIVED</a>) {
<a name="l00422"></a>00422 xmit_blocks-><a class="code" href="classdtn_1_1BlockInfoVec.html#3dd17df5cfc9f0ddac71580724739866" title="Append a block using the given processor and optional source block.">append_block</a>(<span class="keyword">this</span>, source);
<a name="l00423"></a>00423 }
<a name="l00424"></a>00424 <span class="keywordflow">else</span> {
<a name="l00425"></a>00425 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>((*xmit_blocks)[0].type() == <a class="code" href="classdtn_1_1BundleProtocol.html#54a44c247b3c20b4ed11e29494284ca753097979cfe600d2c1dfb5cf3629b195" title="INTERNAL ONLY -- NOT IN SPEC.">BundleProtocol::PRIMARY_BLOCK</a>);
<a name="l00426"></a>00426 xmit_blocks->insert(xmit_blocks->begin() + 1, <a class="code" href="classdtn_1_1BlockProcessor.html#f60b1c05e77bb387f21aaff2c8ac532b">BlockInfo</a>(<span class="keyword">this</span>, source));
<a name="l00427"></a>00427 }
<a name="l00428"></a>00428 <span class="keywordflow">return</span> <a class="code" href="BlockProcessor_8h.html#446572d61c813971cb4d5ce4ee1b9c0b">BP_SUCCESS</a>;
<a name="l00429"></a>00429 }
<a name="l00430"></a>00430
<a name="l00431"></a>00431 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00432"></a>00432 <span class="keywordtype">int</span>
<a name="l00433"></a><a class="code" href="classdtn_1_1BlockProcessor.html#0256b44d0f9f42b1f36054c68444de6c">00433</a> <a class="code" href="classdtn_1_1BlockProcessor.html#0256b44d0f9f42b1f36054c68444de6c" title="Third callback for transmitting a bundle.">BlockProcessor::finalize</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="l00434"></a>00434 <a class="code" href="classdtn_1_1BlockInfoVec.html" title="Class for a vector of BlockInfo structures.">BlockInfoVec</a>* xmit_blocks,
<a name="l00435"></a>00435 <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="l00436"></a>00436 <span class="keyword">const</span> <a class="code" href="namespacedtn.html#6efb37e503f8062c537b022eb755b94e" title="Typedef for a reference on a link.">LinkRef</a>& link)
<a name="l00437"></a>00437 {
<a name="l00438"></a>00438 (void)xmit_blocks;
<a name="l00439"></a>00439 (void)link;
<a name="l00440"></a>00440
<a name="l00441"></a>00441 <span class="keywordflow">if</span> (bundle-><a class="code" href="classdtn_1_1Bundle.html#839db0b56b61020d9f2b3878e6c2d34a" title="Accessors.">is_admin</a>() && block-><a class="code" href="classdtn_1_1BlockInfo.html#46e4157d30528eae60a1cd240e58b495">type</a>() != <a class="code" href="classdtn_1_1BundleProtocol.html#54a44c247b3c20b4ed11e29494284ca753097979cfe600d2c1dfb5cf3629b195" title="INTERNAL ONLY -- NOT IN SPEC.">BundleProtocol::PRIMARY_BLOCK</a>) {
<a name="l00442"></a>00442 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>((block-><a class="code" href="classdtn_1_1BlockInfo.html#51f21d5cf4aef2550b605ab90961e045">flags</a>() &
<a name="l00443"></a>00443 <a class="code" href="classdtn_1_1BundleProtocol.html#cd56fabd4393bd86ffc295bafaba540b08e26de152eecfd35ff1081abf480309">BundleProtocol::BLOCK_FLAG_REPORT_ONERROR</a>) == 0);
<a name="l00444"></a>00444 }
<a name="l00445"></a>00445 <span class="keywordflow">return</span> <a class="code" href="BlockProcessor_8h.html#446572d61c813971cb4d5ce4ee1b9c0b">BP_SUCCESS</a>;
<a name="l00446"></a>00446 }
<a name="l00447"></a>00447
<a name="l00448"></a>00448 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00449"></a>00449 <span class="keywordtype">void</span>
<a name="l00450"></a><a class="code" href="classdtn_1_1BlockProcessor.html#4e9295a532828f2cc6a20fb9f95a69c9">00450</a> <a class="code" href="classdtn_1_1BlockProcessor.html#4e9295a532828f2cc6a20fb9f95a69c9" title="Accessor to virtualize read-only processing contents of the block in various ways...">BlockProcessor::process</a>(process_func* func,
<a name="l00451"></a>00451 <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="l00452"></a>00452 <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>* caller_block,
<a name="l00453"></a>00453 <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>* target_block,
<a name="l00454"></a>00454 <span class="keywordtype">size_t</span> offset,
<a name="l00455"></a>00455 <span class="keywordtype">size_t</span> <a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a>,
<a name="l00456"></a>00456 OpaqueContext* context)
<a name="l00457"></a>00457 {
<a name="l00458"></a>00458 u_char* <a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>;
<a name="l00459"></a>00459
<a name="l00460"></a>00460 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(offset < target_block->contents().<a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a>());
<a name="l00461"></a>00461 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(target_block-><a class="code" href="classdtn_1_1BlockInfo.html#40fee1299938523234d3ae8c80661e22" title="Accessors.">contents</a>().len() >= offset + len);
<a name="l00462"></a>00462
<a name="l00463"></a>00463 <span class="comment">// convert the offset to a pointer in the target block</span>
<a name="l00464"></a>00464 buf = target_block-><a class="code" href="classdtn_1_1BlockInfo.html#40fee1299938523234d3ae8c80661e22" title="Accessors.">contents</a>().buf() + offset;
<a name="l00465"></a>00465
<a name="l00466"></a>00466 <span class="comment">// call the processing function to do the work</span>
<a name="l00467"></a>00467 (*func)(bundle, caller_block, target_block, buf, len, context);
<a name="l00468"></a>00468 }
<a name="l00469"></a>00469
<a name="l00470"></a>00470 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00471"></a>00471 <span class="keywordtype">bool</span>
<a name="l00472"></a><a class="code" href="classdtn_1_1BlockProcessor.html#05bcb879796314ae4a2c0d909277c008">00472</a> <a class="code" href="classdtn_1_1BlockProcessor.html#05bcb879796314ae4a2c0d909277c008" title="Similar to process() but for potentially mutating processing functions.">BlockProcessor::mutate</a>(mutate_func* func,
<a name="l00473"></a>00473 <a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>* bundle,
<a name="l00474"></a>00474 <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>* caller_block,
<a name="l00475"></a>00475 <a class="code" href="classdtn_1_1BlockInfo.html" title="Class used to store unparsed bundle blocks and associated metadata about them.">BlockInfo</a>* target_block,
<a name="l00476"></a>00476 <span class="keywordtype">size_t</span> offset,
<a name="l00477"></a>00477 <span class="keywordtype">size_t</span> <a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a>,
<a name="l00478"></a>00478 OpaqueContext* context)
<a name="l00479"></a>00479 {
<a name="l00480"></a>00480 u_char* <a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>;
<a name="l00481"></a>00481
<a name="l00482"></a>00482 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(offset < target_block->contents().<a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a>());
<a name="l00483"></a>00483 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(target_block-><a class="code" href="classdtn_1_1BlockInfo.html#40fee1299938523234d3ae8c80661e22" title="Accessors.">contents</a>().len() >= offset + len);
<a name="l00484"></a>00484
<a name="l00485"></a>00485 <span class="comment">// convert the offset to a pointer in the target block</span>
<a name="l00486"></a>00486 buf = target_block-><a class="code" href="classdtn_1_1BlockInfo.html#40fee1299938523234d3ae8c80661e22" title="Accessors.">contents</a>().buf() + offset;
<a name="l00487"></a>00487
<a name="l00488"></a>00488 <span class="comment">// call the processing function to do the work</span>
<a name="l00489"></a>00489 <span class="keywordflow">return</span> (*func)(bundle, caller_block, target_block, buf, len, context);
<a name="l00490"></a>00490
<a name="l00491"></a>00491 <span class="comment">// if we need to flush changed content back to disk, do it here</span>
<a name="l00492"></a>00492 }
<a name="l00493"></a>00493
<a name="l00494"></a>00494 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00495"></a>00495 <span class="keywordtype">void</span>
<a name="l00496"></a><a class="code" href="classdtn_1_1BlockProcessor.html#f7307eeed9add202cbaa215e48c3d5da">00496</a> <a class="code" href="classdtn_1_1BlockProcessor.html#f7307eeed9add202cbaa215e48c3d5da" title="Accessor to virtualize copying contents out from the block info.">BlockProcessor::produce</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="l00497"></a>00497 <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>* block,
<a name="l00498"></a>00498 u_char* <a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>,
<a name="l00499"></a>00499 <span class="keywordtype">size_t</span> offset,
<a name="l00500"></a>00500 <span class="keywordtype">size_t</span> <a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a>)
<a name="l00501"></a>00501 {
<a name="l00502"></a>00502 (void)bundle;
<a name="l00503"></a>00503 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(offset < block->contents().<a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a>());
<a name="l00504"></a>00504 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(block-><a class="code" href="classdtn_1_1BlockInfo.html#40fee1299938523234d3ae8c80661e22" title="Accessors.">contents</a>().len() >= offset + len);
<a name="l00505"></a>00505 memcpy(buf, block-><a class="code" href="classdtn_1_1BlockInfo.html#40fee1299938523234d3ae8c80661e22" title="Accessors.">contents</a>().buf() + offset, len);
<a name="l00506"></a>00506 }
<a name="l00507"></a>00507
<a name="l00508"></a>00508 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00509"></a>00509 <span class="keywordtype">void</span>
<a name="l00510"></a><a class="code" href="classdtn_1_1BlockProcessor.html#e0866915affada343af6b8d8b16bf354">00510</a> <a class="code" href="classdtn_1_1BlockProcessor.html#e0866915affada343af6b8d8b16bf354" title="General hook to set up a block with the given contents.">BlockProcessor::init_block</a>(<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="l00511"></a>00511 <a class="code" href="classdtn_1_1BlockInfoVec.html" title="Class for a vector of BlockInfo structures.">BlockInfoVec</a>* block_list,
<a name="l00512"></a>00512 u_int8_t type,
<a name="l00513"></a>00513 u_int8_t flags,
<a name="l00514"></a>00514 <span class="keyword">const</span> u_char* bp,
<a name="l00515"></a>00515 <span class="keywordtype">size_t</span> <a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a>)
<a name="l00516"></a>00516 {
<a name="l00517"></a>00517 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(block-><a class="code" href="classdtn_1_1BlockInfo.html#bc48fc2f7f543561e26a8a9e32aceda2" title="Accessors.">owner</a>() != NULL);
<a name="l00518"></a>00518 <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>(block_list, block, type, flags, len);
<a name="l00519"></a>00519 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(block-><a class="code" href="classdtn_1_1BlockInfo.html#590c483ae6cc403c5062b8b3acc51ae3" title="Accessors.">data_offset</a>() != 0);
<a name="l00520"></a>00520 block-><a class="code" href="classdtn_1_1BlockInfo.html#2b1a3f8f9c10d722bc4313781aac8e19" title="Mutating accessors.">writable_contents</a>()->reserve(block-><a class="code" href="classdtn_1_1BlockInfo.html#2045184fe07026a47e1226bf7142f89a" title="Accessors.">full_length</a>());
<a name="l00521"></a>00521 block-><a class="code" href="classdtn_1_1BlockInfo.html#2b1a3f8f9c10d722bc4313781aac8e19" title="Mutating accessors.">writable_contents</a>()->set_len(block-><a class="code" href="classdtn_1_1BlockInfo.html#2045184fe07026a47e1226bf7142f89a" title="Accessors.">full_length</a>());
<a name="l00522"></a>00522 memcpy(block-><a class="code" href="classdtn_1_1BlockInfo.html#2b1a3f8f9c10d722bc4313781aac8e19" title="Mutating accessors.">writable_contents</a>()->buf() + block-><a class="code" href="classdtn_1_1BlockInfo.html#590c483ae6cc403c5062b8b3acc51ae3" title="Accessors.">data_offset</a>(),
<a name="l00523"></a>00523 bp, len);
<a name="l00524"></a>00524 }
<a name="l00525"></a>00525
<a name="l00526"></a>00526 } <span class="comment">// namespace dtn</span>
</pre></div></div>
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Mandriva
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2010.0
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i586
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media
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contrib-release
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29c369053a983cc5d8c880dc6e0a2237
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