<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<title>DTN Reference Implementation: Ciphersuite.cc Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css">
<link href="doxygen.css" rel="stylesheet" type="text/css">
</head><body>
<!-- Generated by Doxygen 1.5.8 -->
<div class="navigation" id="top">
<div class="tabs">
<ul>
<li><a href="main.html"><span>Main Page</span></a></li>
<li><a href="namespaces.html"><span>Namespaces</span></a></li>
<li><a href="annotated.html"><span>Classes</span></a></li>
<li class="current"><a href="files.html"><span>Files</span></a></li>
</ul>
</div>
<div class="tabs">
<ul>
<li><a href="files.html"><span>File List</span></a></li>
<li><a href="globals.html"><span>File Members</span></a></li>
</ul>
</div>
<h1>Ciphersuite.cc</h1><a href="Ciphersuite_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 SPARTA Inc</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">#ifdef BSP_ENABLED</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span>
<a name="l00023"></a>00023 <span class="preprocessor">#include "<a class="code" href="Ciphersuite_8h.html">Ciphersuite.h</a>"</span>
<a name="l00024"></a>00024 <span class="preprocessor">#include "<a class="code" href="BA__BlockProcessor_8h.html">BA_BlockProcessor.h</a>"</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include "<a class="code" href="Ciphersuite__BA1_8h.html">Ciphersuite_BA1.h</a>"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "<a class="code" href="PS__BlockProcessor_8h.html">PS_BlockProcessor.h</a>"</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include "<a class="code" href="Ciphersuite__PS2_8h.html">Ciphersuite_PS2.h</a>"</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include "<a class="code" href="C__BlockProcessor_8h.html">C_BlockProcessor.h</a>"</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include "<a class="code" href="Ciphersuite__C3_8h.html">Ciphersuite_C3.h</a>"</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="bundling_2Bundle_8h.html">bundling/Bundle.h</a>"</span>
<a name="l00031"></a>00031 <span class="preprocessor">#include "<a class="code" href="BundleDaemon_8h.html">bundling/BundleDaemon.h</a>"</span>
<a name="l00032"></a>00032 <span class="preprocessor">#include "<a class="code" href="BundleProtocol_8h.html">bundling/BundleProtocol.h</a>"</span>
<a name="l00033"></a>00033 <span class="preprocessor">#include "<a class="code" href="contacts_2Link_8h.html">contacts/Link.h</a>"</span>
<a name="l00034"></a>00034 <span class="preprocessor">#include "<a class="code" href="SDNV_8h.html">bundling/SDNV.h</a>"</span>
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="keyword">namespace </span>dtn {
<a name="l00037"></a>00037
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="preprocessor">#define CS_MAX 1024</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span>Ciphersuite* Ciphersuite::ciphersuites_[CS_MAX];
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <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/ciphersuite"</span>;
<a name="l00043"></a>00043
<a name="l00044"></a>00044 <span class="keywordtype">bool</span> Ciphersuite::inited = <span class="keyword">false</span>;
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00047"></a>00047 Ciphersuite::Ciphersuite()
<a name="l00048"></a>00048 <span class="comment">// : BlockProcessor(block_type)</span>
<a name="l00049"></a>00049 {
<a name="l00050"></a>00050 log_debug_p(<a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">log</a>, <span class="stringliteral">"Ciphersuite::Ciphersuite()"</span>);
<a name="l00051"></a>00051 }
<a name="l00052"></a>00052
<a name="l00053"></a>00053 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00054"></a>00054 Ciphersuite::~Ciphersuite()
<a name="l00055"></a>00055 { }
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00058"></a>00058 <span class="keywordtype">void</span>
<a name="l00059"></a>00059 Ciphersuite::register_ciphersuite(Ciphersuite* cs)
<a name="l00060"></a>00060 {
<a name="l00061"></a>00061 log_debug_p(<a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">log</a>, <span class="stringliteral">"Ciphersuite::register_ciphersuite()"</span>);
<a name="l00062"></a>00062 u_int16_t num = cs->cs_num();
<a name="l00063"></a>00063
<a name="l00064"></a>00064 <span class="keywordflow">if</span> ( num <= 0 || num >= CS_MAX )
<a name="l00065"></a>00065 <span class="keywordflow">return</span>; <span class="comment">//out of range</span>
<a name="l00066"></a>00066
<a name="l00067"></a>00067 <span class="comment">// don't override an existing suite</span>
<a name="l00068"></a>00068 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(ciphersuites_[num] == 0);
<a name="l00069"></a>00069 ciphersuites_[num] = cs;
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071
<a name="l00072"></a>00072 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00073"></a>00073 Ciphersuite*
<a name="l00074"></a>00074 Ciphersuite::find_suite(u_int16_t num)
<a name="l00075"></a>00075 {
<a name="l00076"></a>00076 Ciphersuite* ret = NULL;
<a name="l00077"></a>00077 log_debug_p(<a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">log</a>, <span class="stringliteral">"Ciphersuite::find_suite()"</span>);
<a name="l00078"></a>00078
<a name="l00079"></a>00079 <span class="keywordflow">if</span> ( num > 0 && num < CS_MAX ) <span class="comment">// entry for element zero is illegal</span>
<a name="l00080"></a>00080 ret = ciphersuites_[num];
<a name="l00081"></a>00081
<a name="l00082"></a>00082 <span class="keywordflow">return</span> ret;
<a name="l00083"></a>00083 }
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00086"></a>00086 <span class="keywordtype">void</span>
<a name="l00087"></a>00087 Ciphersuite::init_default_ciphersuites()
<a name="l00088"></a>00088 {
<a name="l00089"></a>00089 log_debug_p(<a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">log</a>, <span class="stringliteral">"Ciphersuite::init_default_ciphersuites()"</span>);
<a name="l00090"></a>00090 <span class="keywordflow">if</span> ( ! inited ) {
<a name="l00091"></a>00091 <span class="comment">// register default block processor handlers</span>
<a name="l00092"></a>00092 BundleProtocol::register_processor(<span class="keyword">new</span> BA_BlockProcessor());
<a name="l00093"></a>00093 BundleProtocol::register_processor(<span class="keyword">new</span> PS_BlockProcessor());
<a name="l00094"></a>00094 BundleProtocol::register_processor(<span class="keyword">new</span> C_BlockProcessor());
<a name="l00095"></a>00095
<a name="l00096"></a>00096 <span class="comment">// register mandatory ciphersuites</span>
<a name="l00097"></a>00097 register_ciphersuite(<span class="keyword">new</span> Ciphersuite_BA1());
<a name="l00098"></a>00098 register_ciphersuite(<span class="keyword">new</span> Ciphersuite_PS2());
<a name="l00099"></a>00099 register_ciphersuite(<span class="keyword">new</span> Ciphersuite_C3());
<a name="l00100"></a>00100
<a name="l00101"></a>00101 inited = <span class="keyword">true</span>;
<a name="l00102"></a>00102 }
<a name="l00103"></a>00103 }
<a name="l00104"></a>00104
<a name="l00105"></a>00105 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00106"></a>00106 u_int16_t
<a name="l00107"></a>00107 Ciphersuite::cs_num(<span class="keywordtype">void</span>)
<a name="l00108"></a>00108 {
<a name="l00109"></a>00109
<a name="l00110"></a>00110 <span class="keywordflow">return</span> 0;
<a name="l00111"></a>00111 }
<a name="l00112"></a>00112
<a name="l00113"></a>00113 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00114"></a>00114 <span class="keywordtype">void</span>
<a name="l00115"></a>00115 Ciphersuite::parse(BlockInfo* block)
<a name="l00116"></a>00116 {
<a name="l00117"></a>00117 Ciphersuite* cs_owner = NULL;
<a name="l00118"></a>00118 BP_Local_CS* locals = NULL;
<a name="l00119"></a>00119 u_char* <a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>;
<a name="l00120"></a>00120 <span class="keywordtype">size_t</span> <a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a>;
<a name="l00121"></a>00121 u_int64_t cs_flags;
<a name="l00122"></a>00122 u_int64_t suite_num;
<a name="l00123"></a>00123 <span class="keywordtype">int</span> sdnv_len;
<a name="l00124"></a>00124 u_int64_t security_correlator = 0LL;
<a name="l00125"></a>00125 u_int64_t field_length = 0LL;
<a name="l00126"></a>00126 <span class="keywordtype">bool</span> has_source;
<a name="l00127"></a>00127 <span class="keywordtype">bool</span> has_dest;
<a name="l00128"></a>00128 <span class="keywordtype">bool</span> has_params;
<a name="l00129"></a>00129 <span class="keywordtype">bool</span> has_correlator;
<a name="l00130"></a>00130 <span class="keywordtype">bool</span> has_result;
<a name="l00131"></a>00131 EndpointIDVector::const_iterator iter;
<a name="l00132"></a>00132
<a name="l00133"></a>00133 <span class="comment">// XXX/pl todo think about a "const" version of parse() since there</span>
<a name="l00134"></a>00134 <span class="comment">// are several callers who need parsing but have a const block</span>
<a name="l00135"></a>00135
<a name="l00136"></a>00136 log_debug_p(<a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">log</a>, <span class="stringliteral">"Ciphersuite::parse() block %p"</span>, block);
<a name="l00137"></a>00137 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(block != NULL);
<a name="l00138"></a>00138
<a name="l00139"></a>00139 <span class="comment">// preamble has already been parsed and stored, so we skip over it here</span>
<a name="l00140"></a>00140 <span class="comment">//get the type</span>
<a name="l00141"></a>00141 <span class="comment">//get flags sdnv</span>
<a name="l00142"></a>00142 <span class="comment">//get length sdnv</span>
<a name="l00143"></a>00143
<a name="l00144"></a>00144 buf = block->contents().buf() + block->data_offset();
<a name="l00145"></a>00145 len = block->data_length();
<a name="l00146"></a>00146
<a name="l00147"></a>00147 <span class="comment">//get ciphersuite and flags</span>
<a name="l00148"></a>00148 sdnv_len = <a class="code" href="SDNV_8cc.html#151d178617a7c2f598cfd7630ebeb7b4">SDNV::decode</a>(buf,
<a name="l00149"></a>00149 len,
<a name="l00150"></a>00150 &suite_num);
<a name="l00151"></a>00151 buf += sdnv_len;
<a name="l00152"></a>00152 len -= sdnv_len;
<a name="l00153"></a>00153
<a name="l00154"></a>00154 sdnv_len = <a class="code" href="SDNV_8cc.html#151d178617a7c2f598cfd7630ebeb7b4">SDNV::decode</a>(buf,
<a name="l00155"></a>00155 len,
<a name="l00156"></a>00156 &cs_flags);
<a name="l00157"></a>00157 buf += sdnv_len;
<a name="l00158"></a>00158 len -= sdnv_len;
<a name="l00159"></a>00159
<a name="l00160"></a>00160 has_source = (cs_flags & CS_BLOCK_HAS_SOURCE) != 0;
<a name="l00161"></a>00161 has_dest = (cs_flags & CS_BLOCK_HAS_DEST) != 0;
<a name="l00162"></a>00162 has_params = (cs_flags & CS_BLOCK_HAS_PARAMS) != 0;
<a name="l00163"></a>00163 has_correlator = (cs_flags & CS_BLOCK_HAS_CORRELATOR) != 0;
<a name="l00164"></a>00164 has_result = (cs_flags & CS_BLOCK_HAS_RESULT) != 0;
<a name="l00165"></a>00165 log_debug_p(<a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">log</a>, <span class="stringliteral">"Ciphersuite::parse() suite_num %llu cs_flags 0x%llx"</span>,
<a name="l00166"></a>00166 U64FMT(suite_num), U64FMT(cs_flags));
<a name="l00167"></a>00167
<a name="l00168"></a>00168 cs_owner = <span class="keyword">dynamic_cast<</span>Ciphersuite*<span class="keyword">></span>(find_suite(suite_num));
<a name="l00169"></a>00169
<a name="l00170"></a>00170 <span class="keywordflow">if</span> ( ciphersuites_[suite_num] != NULL ) <span class="comment">// get specific subclass if it's present</span>
<a name="l00171"></a>00171 cs_owner = ciphersuites_[suite_num];
<a name="l00172"></a>00172
<a name="l00173"></a>00173 <span class="keywordflow">if</span> ( block->locals() == NULL ) {
<a name="l00174"></a>00174 <span class="keywordflow">if</span> ( cs_owner != NULL )
<a name="l00175"></a>00175 cs_owner->init_locals(block); <span class="comment">// get owning class to allocate locals</span>
<a name="l00176"></a>00176 <span class="keywordflow">else</span>
<a name="l00177"></a>00177 block->set_locals( <span class="keyword">new</span> BP_Local_CS );
<a name="l00178"></a>00178 }
<a name="l00179"></a>00179
<a name="l00180"></a>00180 locals = <span class="keyword">dynamic_cast<</span>BP_Local_CS*<span class="keyword">></span>(block->locals());
<a name="l00181"></a>00181 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a> ( locals != NULL );
<a name="l00182"></a>00182
<a name="l00183"></a>00183 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a> ( suite_num < 65535 );
<a name="l00184"></a>00184 locals->set_owner_cs_num(suite_num);
<a name="l00185"></a>00185
<a name="l00186"></a>00186 <span class="comment">//set cs_flags</span>
<a name="l00187"></a>00187 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a> ( cs_flags < 65535 );
<a name="l00188"></a>00188 locals->set_cs_flags(cs_flags);
<a name="l00189"></a>00189
<a name="l00190"></a>00190 <span class="comment">//get correlator, if present</span>
<a name="l00191"></a>00191 <span class="keywordflow">if</span> ( has_correlator ) {
<a name="l00192"></a>00192 sdnv_len = <a class="code" href="SDNV_8cc.html#151d178617a7c2f598cfd7630ebeb7b4">SDNV::decode</a>(buf,
<a name="l00193"></a>00193 len,
<a name="l00194"></a>00194 &security_correlator);
<a name="l00195"></a>00195 buf += sdnv_len;
<a name="l00196"></a>00196 len -= sdnv_len;
<a name="l00197"></a>00197 }
<a name="l00198"></a>00198 log_debug_p(<a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">log</a>, <span class="stringliteral">"Ciphersuite::parse() correlator %llu"</span>,
<a name="l00199"></a>00199 U64FMT(security_correlator));
<a name="l00200"></a>00200 locals->set_correlator(security_correlator);
<a name="l00201"></a>00201
<a name="l00202"></a>00202
<a name="l00203"></a>00203 <span class="comment">//get cs params length, and data</span>
<a name="l00204"></a>00204 <span class="keywordflow">if</span> ( has_params ) {
<a name="l00205"></a>00205 sdnv_len = <a class="code" href="SDNV_8cc.html#151d178617a7c2f598cfd7630ebeb7b4">SDNV::decode</a>(buf,
<a name="l00206"></a>00206 len,
<a name="l00207"></a>00207 &field_length);
<a name="l00208"></a>00208 buf += sdnv_len;
<a name="l00209"></a>00209 len -= sdnv_len;
<a name="l00210"></a>00210 <span class="comment">// make sure the buffer has enough space, copy data in</span>
<a name="l00211"></a>00211 locals->writable_security_params()->reserve(field_length);
<a name="l00212"></a>00212 memcpy( locals->writable_security_params()->end(), buf, field_length);
<a name="l00213"></a>00213 locals->writable_security_params()->set_len(field_length);
<a name="l00214"></a>00214 buf += field_length;
<a name="l00215"></a>00215 len -= field_length;
<a name="l00216"></a>00216 log_debug_p(<a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">log</a>, <span class="stringliteral">"Ciphersuite::parse() security_params len %llu"</span>,
<a name="l00217"></a>00217 U64FMT(field_length));
<a name="l00218"></a>00218 }
<a name="l00219"></a>00219
<a name="l00220"></a>00220
<a name="l00221"></a>00221 <span class="comment">//get sec-src length and data</span>
<a name="l00222"></a>00222 log_debug_p(<a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">log</a>, <span class="stringliteral">"Ciphersuite::parse() eid_list().size() %zu has_source %u has_dest %u"</span>,
<a name="l00223"></a>00223 block->eid_list().size(), has_source, has_dest);
<a name="l00224"></a>00224
<a name="l00225"></a>00225 <span class="comment">// XXX/pl - temp fix for blocks loaded from store</span>
<a name="l00226"></a>00226 <span class="keywordflow">if</span> ( block->eid_list().size() > 0 ) {
<a name="l00227"></a>00227 iter = block->eid_list().begin();
<a name="l00228"></a>00228 <span class="keywordflow">if</span> ( has_source ) {
<a name="l00229"></a>00229 locals->set_security_src( iter->str() );
<a name="l00230"></a>00230 iter++;
<a name="l00231"></a>00231 }
<a name="l00232"></a>00232
<a name="l00233"></a>00233
<a name="l00234"></a>00234 <span class="comment">//get sec-dest length and data</span>
<a name="l00235"></a>00235 <span class="keywordflow">if</span> ( has_dest ) {
<a name="l00236"></a>00236 locals->set_security_dest( iter->str() );
<a name="l00237"></a>00237 }
<a name="l00238"></a>00238 }
<a name="l00239"></a>00239
<a name="l00240"></a>00240
<a name="l00241"></a>00241 <span class="comment">//get sec-result length and data, if present</span>
<a name="l00242"></a>00242 <span class="keywordflow">if</span> ( has_result ) {
<a name="l00243"></a>00243 sdnv_len = <a class="code" href="SDNV_8cc.html#151d178617a7c2f598cfd7630ebeb7b4">SDNV::decode</a>(buf,
<a name="l00244"></a>00244 len,
<a name="l00245"></a>00245 &field_length);
<a name="l00246"></a>00246 buf += sdnv_len;
<a name="l00247"></a>00247 len -= sdnv_len;
<a name="l00248"></a>00248 <span class="comment">// make sure the buffer has enough space, copy data in</span>
<a name="l00249"></a>00249 locals->writable_security_result()->reserve(field_length);
<a name="l00250"></a>00250 memcpy( locals->writable_security_result()->end(), buf, field_length);
<a name="l00251"></a>00251 locals->writable_security_result()->set_len(field_length);
<a name="l00252"></a>00252 buf += field_length;
<a name="l00253"></a>00253 len -= field_length;
<a name="l00254"></a>00254
<a name="l00255"></a>00255 }
<a name="l00256"></a>00256
<a name="l00257"></a>00257
<a name="l00258"></a>00258
<a name="l00259"></a>00259
<a name="l00260"></a>00260 }
<a name="l00261"></a>00261
<a name="l00262"></a>00262
<a name="l00263"></a>00263 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00264"></a>00264 <span class="keywordtype">int</span>
<a name="l00265"></a>00265 Ciphersuite::reload_post_process(Bundle* bundle,
<a name="l00266"></a>00266 BlockInfoVec* block_list,
<a name="l00267"></a>00267 BlockInfo* block)
<a name="l00268"></a>00268 {
<a name="l00269"></a>00269 (void)bundle;
<a name="l00270"></a>00270 (void)block_list;
<a name="l00271"></a>00271 (void)block;
<a name="l00272"></a>00272
<a name="l00273"></a>00273 <span class="comment">// Received blocks might be stored and reloaded and</span>
<a name="l00274"></a>00274 <span class="comment">// some fields aren't reset.</span>
<a name="l00275"></a>00275 <span class="comment">// This allows BlockProcessors to reestablish what they</span>
<a name="l00276"></a>00276 <span class="comment">// need. The default implementation does nothing.</span>
<a name="l00277"></a>00277 <span class="comment">// In general that's appropriate, as the BlockProcessor</span>
<a name="l00278"></a>00278 <span class="comment">// will have called parse() and that's the main need. </span>
<a name="l00279"></a>00279 <span class="comment">// Individual ciphersuites can override this if their </span>
<a name="l00280"></a>00280 <span class="comment">// usage requires it.</span>
<a name="l00281"></a>00281
<a name="l00282"></a>00282 block->set_reloaded(<span class="keyword">false</span>);
<a name="l00283"></a>00283 <span class="keywordflow">return</span> 0;
<a name="l00284"></a>00284
<a name="l00285"></a>00285 }
<a name="l00286"></a>00286
<a name="l00287"></a>00287 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00288"></a>00288 <span class="keywordtype">void</span>
<a name="l00289"></a>00289 Ciphersuite::generate_preamble(BlockInfoVec* xmit_blocks,
<a name="l00290"></a>00290 BlockInfo* block,
<a name="l00291"></a>00291 u_int8_t type,
<a name="l00292"></a>00292 u_int64_t flags,
<a name="l00293"></a>00293 u_int64_t data_length)
<a name="l00294"></a>00294 {
<a name="l00295"></a>00295 block->owner()->generate_preamble(xmit_blocks, block, type,
<a name="l00296"></a>00296 flags, data_length);
<a name="l00297"></a>00297 }
<a name="l00298"></a>00298
<a name="l00299"></a>00299 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00300"></a>00300 <span class="keywordtype">bool</span>
<a name="l00301"></a>00301 Ciphersuite::destination_is_local_node(<span class="keyword">const</span> Bundle* bundle,
<a name="l00302"></a>00302 <span class="keyword">const</span> BlockInfo* block)
<a name="l00303"></a>00303 {
<a name="l00304"></a>00304 u_int16_t cs_flags = 0;
<a name="l00305"></a>00305 EndpointID local_eid = BundleDaemon::instance()->local_eid();
<a name="l00306"></a>00306 BP_Local_CS* locals;
<a name="l00307"></a>00307 <span class="keywordtype">bool</span> result = <span class="keyword">false</span>; <span class="comment">//default is "no" even in case of errors</span>
<a name="l00308"></a>00308
<a name="l00309"></a>00309 log_debug_p(<a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">log</a>, <span class="stringliteral">"Ciphersuite::destination_is_local_node()"</span>);
<a name="l00310"></a>00310 <span class="keywordflow">if</span> ( block == NULL )
<a name="l00311"></a>00311 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00312"></a>00312
<a name="l00313"></a>00313 <span class="keywordflow">if</span> ( block->locals() == NULL ) <span class="comment">// then the block is broken</span>
<a name="l00314"></a>00314 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00315"></a>00315
<a name="l00316"></a>00316 locals = <span class="keyword">dynamic_cast<</span>BP_Local_CS*<span class="keyword">></span>(block->locals());
<a name="l00317"></a>00317 <span class="keywordflow">if</span> ( locals == NULL )
<a name="l00318"></a>00318 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00319"></a>00319
<a name="l00320"></a>00320 cs_flags = locals->cs_flags();
<a name="l00321"></a>00321
<a name="l00322"></a>00322 <span class="comment">// this is a very clunky way to get the "base" portion of the bundle destination</span>
<a name="l00323"></a>00323 std::string bundle_dest_str = bundle->dest().uri().scheme() + <span class="stringliteral">"://"</span> +
<a name="l00324"></a>00324 bundle->dest().uri().host();
<a name="l00325"></a>00325 EndpointID dest_node(bundle_dest_str);
<a name="l00326"></a>00326
<a name="l00327"></a>00327
<a name="l00328"></a>00328 <span class="comment">// if this is security-dest, or there isn't one and this is bundle dest</span>
<a name="l00329"></a>00329 <span class="keywordflow">if</span> ( ( (cs_flags & Ciphersuite::CS_BLOCK_HAS_DEST) && (local_eid == locals->security_dest())) ||
<a name="l00330"></a>00330 ( !(cs_flags & Ciphersuite::CS_BLOCK_HAS_DEST) && (local_eid == dest_node) ) )
<a name="l00331"></a>00331 { <span class="comment">//yes - this is ours </span>
<a name="l00332"></a>00332 result = <span class="keyword">true</span>;
<a name="l00333"></a>00333 }
<a name="l00334"></a>00334
<a name="l00335"></a>00335 <span class="keywordflow">return</span> result;
<a name="l00336"></a>00336 }
<a name="l00337"></a>00337
<a name="l00338"></a>00338 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00339"></a>00339 <span class="keywordtype">bool</span>
<a name="l00340"></a>00340 Ciphersuite::source_is_local_node(<span class="keyword">const</span> Bundle* bundle, <span class="keyword">const</span> BlockInfo* block)
<a name="l00341"></a>00341 {
<a name="l00342"></a>00342 u_int16_t cs_flags = 0;
<a name="l00343"></a>00343 EndpointID local_eid = BundleDaemon::instance()->local_eid();
<a name="l00344"></a>00344 BP_Local_CS* locals;
<a name="l00345"></a>00345 <span class="keywordtype">bool</span> result = <span class="keyword">false</span>; <span class="comment">//default is "no" even in case of errors</span>
<a name="l00346"></a>00346
<a name="l00347"></a>00347 log_debug_p(<a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">log</a>, <span class="stringliteral">"Ciphersuite::source_is_local_node()"</span>);
<a name="l00348"></a>00348 <span class="keywordflow">if</span> ( block == NULL )
<a name="l00349"></a>00349 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00350"></a>00350
<a name="l00351"></a>00351 <span class="keywordflow">if</span> ( block->locals() == NULL ) <span class="comment">// then the block is broken</span>
<a name="l00352"></a>00352 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00353"></a>00353
<a name="l00354"></a>00354 locals = <span class="keyword">dynamic_cast<</span>BP_Local_CS*<span class="keyword">></span>(block->locals());
<a name="l00355"></a>00355 <span class="keywordflow">if</span> ( locals == NULL )
<a name="l00356"></a>00356 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00357"></a>00357
<a name="l00358"></a>00358 cs_flags = locals->cs_flags();
<a name="l00359"></a>00359
<a name="l00360"></a>00360 <span class="comment">// this is a very clunky way to get the "base" portion of the bundle destination</span>
<a name="l00361"></a>00361 std::string bundle_src_str = bundle->source().uri().scheme() + <span class="stringliteral">"://"</span> +
<a name="l00362"></a>00362 bundle->source().uri().host();
<a name="l00363"></a>00363 EndpointID src_node(bundle_src_str);
<a name="l00364"></a>00364
<a name="l00365"></a>00365
<a name="l00366"></a>00366 <span class="comment">// if this is security-src, or there isn't one and this is bundle source</span>
<a name="l00367"></a>00367 <span class="keywordflow">if</span> ( ( (cs_flags & Ciphersuite::CS_BLOCK_HAS_SOURCE) && (local_eid == locals->security_src())) ||
<a name="l00368"></a>00368 ( !(cs_flags & Ciphersuite::CS_BLOCK_HAS_SOURCE) && (local_eid == src_node) ) )
<a name="l00369"></a>00369 { <span class="comment">//yes - this is ours </span>
<a name="l00370"></a>00370 result = <span class="keyword">true</span>;
<a name="l00371"></a>00371 }
<a name="l00372"></a>00372
<a name="l00373"></a>00373 <span class="keywordflow">return</span> result;
<a name="l00374"></a>00374 }
<a name="l00375"></a>00375
<a name="l00376"></a>00376 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00377"></a>00377 <span class="keywordtype">bool</span>
<a name="l00378"></a>00378 Ciphersuite::check_validation(<span class="keyword">const</span> Bundle* bundle,
<a name="l00379"></a>00379 <span class="keyword">const</span> BlockInfoVec* block_list,
<a name="l00380"></a>00380 u_int16_t num)
<a name="l00381"></a>00381 {
<a name="l00382"></a>00382 (void)bundle;
<a name="l00383"></a>00383 u_int16_t proc_flags = 0;
<a name="l00384"></a>00384 BP_Local_CS* locals;
<a name="l00385"></a>00385 BlockInfoVec::const_iterator iter;
<a name="l00386"></a>00386
<a name="l00387"></a>00387 log_debug_p(<a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">log</a>, <span class="stringliteral">"Ciphersuite::check_validation(%hu)"</span>, num);
<a name="l00388"></a>00388 <span class="keywordflow">if</span> ( block_list == NULL )
<a name="l00389"></a>00389 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00390"></a>00390
<a name="l00391"></a>00391 <span class="keywordflow">for</span> ( iter = block_list->begin();
<a name="l00392"></a>00392 iter != block_list->end();
<a name="l00393"></a>00393 ++iter)
<a name="l00394"></a>00394 {
<a name="l00395"></a>00395 <span class="keywordflow">if</span> ( iter->locals() == NULL ) <span class="comment">// then of no interest</span>
<a name="l00396"></a>00396 <span class="keywordflow">continue</span>;
<a name="l00397"></a>00397
<a name="l00398"></a>00398 locals = <span class="keyword">dynamic_cast<</span>BP_Local_CS*<span class="keyword">></span>(iter->locals());
<a name="l00399"></a>00399 <span class="keywordflow">if</span> ( locals == NULL )
<a name="l00400"></a>00400 <span class="keywordflow">continue</span>;
<a name="l00401"></a>00401
<a name="l00402"></a>00402 <span class="keywordflow">if</span> (locals->owner_cs_num() != num )
<a name="l00403"></a>00403 <span class="keywordflow">continue</span>;
<a name="l00404"></a>00404
<a name="l00405"></a>00405 <span class="comment">// OK - this is one of interest</span>
<a name="l00406"></a>00406 proc_flags |= locals->proc_flags();
<a name="l00407"></a>00407 }
<a name="l00408"></a>00408
<a name="l00409"></a>00409 <span class="comment">// Now check what we have collected</span>
<a name="l00410"></a>00410 <span class="comment">// If we positively validated, we succeeded</span>
<a name="l00411"></a>00411 <span class="keywordflow">if</span> ( proc_flags & CS_BLOCK_PASSED_VALIDATION )
<a name="l00412"></a>00412 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00413"></a>00413
<a name="l00414"></a>00414 <span class="comment">// If we had no positives, then any failure is failure</span>
<a name="l00415"></a>00415 <span class="keywordflow">if</span> ( proc_flags & CS_BLOCK_FAILED_VALIDATION )
<a name="l00416"></a>00416 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00417"></a>00417
<a name="l00418"></a>00418 <span class="comment">// If no positives but no failure, then did we have </span>
<a name="l00419"></a>00419 <span class="comment">// a block which we couldn't test</span>
<a name="l00420"></a>00420 <span class="keywordflow">if</span> ( proc_flags & CS_BLOCK_DID_NOT_FAIL )
<a name="l00421"></a>00421 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00422"></a>00422
<a name="l00423"></a>00423 <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">// no blocks of wanted type</span>
<a name="l00424"></a>00424 }
<a name="l00425"></a>00425
<a name="l00426"></a>00426 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00427"></a>00427 u_int64_t
<a name="l00428"></a>00428 Ciphersuite::create_correlator(<span class="keyword">const</span> Bundle* bundle,
<a name="l00429"></a>00429 <span class="keyword">const</span> BlockInfoVec* block_list)
<a name="l00430"></a>00430 {
<a name="l00431"></a>00431 (void)bundle;
<a name="l00432"></a>00432 u_int64_t result = 0LLU;
<a name="l00433"></a>00433 u_int16_t high_val = 1;
<a name="l00434"></a>00434 u_int16_t value;
<a name="l00435"></a>00435 BP_Local_CS* locals;
<a name="l00436"></a>00436 BlockInfoVec::const_iterator iter;
<a name="l00437"></a>00437
<a name="l00438"></a>00438 log_debug_p(<a class="code" href="namespacedtn.html#68bf4270dd0a7e5e8390869b83889922">log</a>, <span class="stringliteral">"Ciphersuite::create_correlator()"</span>);
<a name="l00439"></a>00439 <span class="keywordflow">if</span> ( bundle == NULL )
<a name="l00440"></a>00440 <span class="keywordflow">return</span> 1LLU; <span class="comment">// and good luck :)</span>
<a name="l00441"></a>00441
<a name="l00442"></a>00442 <span class="keywordflow">if</span> ( block_list == NULL )
<a name="l00443"></a>00443 <span class="keywordflow">return</span> 1LLU;
<a name="l00444"></a>00444
<a name="l00445"></a>00445 <span class="keywordflow">if</span> ( bundle->is_fragment() ) {
<a name="l00446"></a>00446 result = bundle->frag_offset() << 24;
<a name="l00447"></a>00447 }
<a name="l00448"></a>00448
<a name="l00449"></a>00449 <span class="keywordflow">for</span> ( iter = block_list->begin();
<a name="l00450"></a>00450 iter != block_list->end();
<a name="l00451"></a>00451 ++iter)
<a name="l00452"></a>00452 {
<a name="l00453"></a>00453 <span class="keywordflow">if</span> ( iter->locals() == NULL ) <span class="comment">// then of no interest</span>
<a name="l00454"></a>00454 <span class="keywordflow">continue</span>;
<a name="l00455"></a>00455
<a name="l00456"></a>00456 locals = <span class="keyword">dynamic_cast<</span>BP_Local_CS*<span class="keyword">></span>(iter->locals());
<a name="l00457"></a>00457 <span class="keywordflow">if</span> ( locals == NULL )
<a name="l00458"></a>00458 <span class="keywordflow">continue</span>;
<a name="l00459"></a>00459
<a name="l00460"></a>00460 value = locals->correlator(); <span class="comment">// only low-order 16 bits</span>
<a name="l00461"></a>00461
<a name="l00462"></a>00462 value = value > high_val ? value : high_val;
<a name="l00463"></a>00463 }
<a name="l00464"></a>00464
<a name="l00465"></a>00465 result |= high_val; <span class="comment">// put high_val into low-order two bytes</span>
<a name="l00466"></a>00466
<a name="l00467"></a>00467 <span class="keywordflow">return</span> result;
<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">void</span>
<a name="l00472"></a>00472 Ciphersuite::init_locals(BlockInfo* block)
<a name="l00473"></a>00473 {
<a name="l00474"></a>00474 <span class="comment">/* Create new locals block but do not overwrite</span>
<a name="l00475"></a>00475 <span class="comment"> * if one already exists.</span>
<a name="l00476"></a>00476 <span class="comment"> * Derived classes may wish to change this behavior</span>
<a name="l00477"></a>00477 <span class="comment"> * and map old-to-new, or whatever</span>
<a name="l00478"></a>00478 <span class="comment"> */</span>
<a name="l00479"></a>00479
<a name="l00480"></a>00480 <span class="keywordflow">if</span> ( block->locals() == NULL )
<a name="l00481"></a>00481 block->set_locals( <span class="keyword">new</span> BP_Local_CS );
<a name="l00482"></a>00482
<a name="l00483"></a>00483 }
<a name="l00484"></a>00484
<a name="l00485"></a>00485 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00486"></a>00486 BP_Local_CS::BP_Local_CS()
<a name="l00487"></a>00487 : BP_Local(),
<a name="l00488"></a>00488 cs_flags_(0),
<a name="l00489"></a>00489 security_result_offset_(0),
<a name="l00490"></a>00490 correlator_(0LL),
<a name="l00491"></a>00491 security_params_(),
<a name="l00492"></a>00492 security_result_(),
<a name="l00493"></a>00493 owner_cs_num_(0)
<a name="l00494"></a>00494 {
<a name="l00495"></a>00495 }
<a name="l00496"></a>00496
<a name="l00497"></a>00497 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00498"></a>00498 BP_Local_CS::BP_Local_CS(<span class="keyword">const</span> BP_Local_CS& b)
<a name="l00499"></a>00499 : BP_Local(),
<a name="l00500"></a>00500 cs_flags_(b.cs_flags_),
<a name="l00501"></a>00501 security_result_offset_(b.security_result_offset_),
<a name="l00502"></a>00502 correlator_(b.correlator_),
<a name="l00503"></a>00503 security_params_(b.security_params_),
<a name="l00504"></a>00504 security_result_(b.security_result_),
<a name="l00505"></a>00505 owner_cs_num_(b.owner_cs_num_)
<a name="l00506"></a>00506 <span class="comment">//XXX-pl might need more items copied</span>
<a name="l00507"></a>00507 {
<a name="l00508"></a>00508 }
<a name="l00509"></a>00509
<a name="l00510"></a>00510 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00511"></a>00511 BP_Local_CS::~BP_Local_CS()
<a name="l00512"></a>00512 {
<a name="l00513"></a>00513 }
<a name="l00514"></a>00514
<a name="l00515"></a>00515 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00516"></a>00516 <span class="keywordtype">void</span>
<a name="l00517"></a>00517 BP_Local_CS::set_key(u_char* k, <span class="keywordtype">size_t</span> len)
<a name="l00518"></a>00518 {
<a name="l00519"></a>00519 key_.reserve(len);
<a name="l00520"></a>00520 key_.set_len(len);
<a name="l00521"></a>00521 memcpy(key_.buf(), k, len);
<a name="l00522"></a>00522 }
<a name="l00523"></a>00523
<a name="l00524"></a>00524 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00525"></a>00525 <span class="keywordtype">void</span>
<a name="l00526"></a>00526 BP_Local_CS::set_salt(u_char* s, <span class="keywordtype">size_t</span> len)
<a name="l00527"></a>00527 {
<a name="l00528"></a>00528 salt_.reserve(len);
<a name="l00529"></a>00529 salt_.set_len(len);
<a name="l00530"></a>00530 memcpy(salt_.buf(), s, len);
<a name="l00531"></a>00531 }
<a name="l00532"></a>00532
<a name="l00533"></a>00533 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00534"></a>00534 <span class="keywordtype">void</span>
<a name="l00535"></a>00535 BP_Local_CS::set_iv(u_char* iv, <span class="keywordtype">size_t</span> len)
<a name="l00536"></a>00536 {
<a name="l00537"></a>00537 iv_.reserve(len);
<a name="l00538"></a>00538 iv_.set_len(len);
<a name="l00539"></a>00539 memcpy(iv_.buf(), iv, len);
<a name="l00540"></a>00540 }
<a name="l00541"></a>00541
<a name="l00542"></a>00542
<a name="l00543"></a>00543 } <span class="comment">// namespace dtn</span>
<a name="l00544"></a>00544
<a name="l00545"></a>00545 <span class="preprocessor">#endif </span><span class="comment">/* BSP_ENABLED */</span>
</pre></div></div>
<hr size="1"><address style="text-align: right;"><small>Generated on Fri Jan 30 09:26:53 2009 for DTN Reference Implementation by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.8 </small></address>
</body>
</html>
distrib
>
Mandriva
>
2010.0
>
i586
>
media
>
contrib-release
>
by-pkgid
>
29c369053a983cc5d8c880dc6e0a2237
>
files
>
170
