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<h1>TCAScheme.cc</h1><a href="TCAScheme_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 2005-2006 University of Waterloo</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 <ctype.h></span>
<a name="l00022"></a>00022 <span class="preprocessor">#include <oasys/debug/Log.h></span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="preprocessor">#include "<a class="code" href="TCAScheme_8h.html">TCAScheme.h</a>"</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include "<a class="code" href="EndpointID_8h.html">EndpointID.h</a>"</span>
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="keyword">namespace </span>dtn {
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="keyword">template</span> <>
<a name="l00030"></a>00030 TCAScheme* oasys::Singleton<TCAScheme>::instance_ = 0;
<a name="l00031"></a>00031
<a name="l00039"></a>00039 <span class="keywordtype">bool</span>
<a name="l00040"></a><a class="code" href="classdtn_1_1TCAScheme.html#0bc054acac3be9c5ec5ab96a50d94a34">00040</a> <a class="code" href="classdtn_1_1TCAScheme.html#0bc054acac3be9c5ec5ab96a50d94a34" title="Validate that the SSP in the given URI is legitimate for this scheme.">TCAScheme::validate</a>(<span class="keyword">const</span> <a class="code" href="namespacedtn.html#0b3883e065c5b300f2581971eee1c009">URI</a>& uri, <span class="keywordtype">bool</span> is_pattern)
<a name="l00041"></a>00041 {
<a name="l00042"></a>00042 <span class="comment">// DK: This is entirely borrowed from the DTNScheme implementation.</span>
<a name="l00043"></a>00043 <span class="comment">// TODO: Revisit this once we are using email addresses or sha1 hashes</span>
<a name="l00044"></a>00044 <span class="comment">// of email addresses as guids in the scheme. Are these still valid?</span>
<a name="l00045"></a>00045
<a name="l00046"></a>00046 (void)is_pattern;
<a name="l00047"></a>00047
<a name="l00048"></a>00048 <span class="keywordflow">if</span> (!uri.valid()) {
<a name="l00049"></a>00049 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00050"></a>00050 }
<a name="l00051"></a>00051
<a name="l00052"></a>00052 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00053"></a>00053 }
<a name="l00054"></a>00054
<a name="l00060"></a>00060 <span class="comment">// DK: This is almost entirely copied from the DTNScheme implementation.</span>
<a name="l00061"></a>00061 <span class="comment">// The one exception is a change to the matching logic, to allow for wildcard</span>
<a name="l00062"></a>00062 <span class="comment">// * in either pattern or ssp. (Previously, * was only supported in pattern.)</span>
<a name="l00063"></a>00063 <span class="keywordtype">bool</span>
<a name="l00064"></a><a class="code" href="classdtn_1_1TCAScheme.html#beaf090ef7539d09c0db2cc00d580279">00064</a> TCAScheme::match(<span class="keyword">const</span> <a class="code" href="classdtn_1_1EndpointIDPattern.html" title="A Distinct class for endpoint patterns (i.e.">EndpointIDPattern</a>& <a class="code" href="dtnperf-client_8c.html#71808395b2460b32d8b1048e44faef6e">pattern</a>, <span class="keyword">const</span> <a class="code" href="classdtn_1_1EndpointID.html">EndpointID</a>& eid)
<a name="l00065"></a>00065 {
<a name="l00066"></a>00066 <span class="comment">// sanity check</span>
<a name="l00067"></a>00067 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(pattern.<a class="code" href="classdtn_1_1EndpointID.html#b49f83da9ea26c1ec80d9be813575de5">scheme</a>() == <span class="keyword">this</span>);
<a name="l00068"></a>00068
<a name="l00069"></a>00069 <span class="comment">// we only match endpoint ids of the same scheme</span>
<a name="l00070"></a>00070 <span class="keywordflow">if</span> (!eid.<a class="code" href="classdtn_1_1EndpointID.html#c6c7ec257f460d69bce4b1530b136323" title="Return an indication of whether or not the scheme is known.">known_scheme</a>() || (eid.<a class="code" href="classdtn_1_1EndpointID.html#b49f83da9ea26c1ec80d9be813575de5">scheme</a>() != <span class="keyword">this</span>)) {
<a name="l00071"></a>00071 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00072"></a>00072 }
<a name="l00073"></a>00073
<a name="l00074"></a>00074 <span class="comment">// if the ssp of either string is "none", then nothing should</span>
<a name="l00075"></a>00075 <span class="comment">// match it (ever)</span>
<a name="l00076"></a>00076 <span class="keywordflow">if</span> (pattern.<a class="code" href="classdtn_1_1EndpointID.html#b6aa3012f45fa87006d24413f8c1bb65">ssp</a>() == <span class="stringliteral">"none"</span> || eid.<a class="code" href="classdtn_1_1EndpointID.html#b6aa3012f45fa87006d24413f8c1bb65">ssp</a>() == <span class="stringliteral">"none"</span>) {
<a name="l00077"></a>00077 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00078"></a>00078 }
<a name="l00079"></a>00079
<a name="l00080"></a>00080 <span class="comment">// check for a wildcard host specifier e.g dtn://*</span>
<a name="l00081"></a>00081 <span class="keywordflow">if</span> (pattern.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().host() == <span class="stringliteral">"*"</span> && pattern.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().path() == <span class="stringliteral">""</span>)
<a name="l00082"></a>00082 {
<a name="l00083"></a>00083 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00084"></a>00084 }
<a name="l00085"></a>00085
<a name="l00086"></a>00086 <span class="comment">// match the host part of the urls (though if the pattern host is</span>
<a name="l00087"></a>00087 <span class="comment">// "*", fall through to the rest of the comparison)</span>
<a name="l00088"></a>00088 <span class="keywordflow">if</span> ((pattern.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().host() != <span class="stringliteral">"*"</span>) &&
<a name="l00089"></a>00089 (eid.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().host() != <span class="stringliteral">"*"</span>) && <span class="comment">// DK: added this</span>
<a name="l00090"></a>00090 (pattern.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().host() != eid.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().host()))
<a name="l00091"></a>00091 {
<a name="l00092"></a>00092 log_debug_p(<span class="stringliteral">"/scheme/dtn"</span>,
<a name="l00093"></a>00093 <span class="stringliteral">"match(%s, %s) failed: url hosts not equal ('%s' != '%s')"</span>,
<a name="l00094"></a>00094 eid.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().c_str(), pattern.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().c_str(),
<a name="l00095"></a>00095 pattern.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().host().c_str(), eid.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().host().c_str());
<a name="l00096"></a>00096 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00097"></a>00097 }
<a name="l00098"></a>00098
<a name="l00099"></a>00099 <span class="comment">// make sure the ports are equal (or unspecified in which case they're 0)</span>
<a name="l00100"></a>00100 <span class="keywordflow">if</span> (pattern.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().port_num() != eid.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().port_num())
<a name="l00101"></a>00101 {
<a name="l00102"></a>00102 log_debug_p(<span class="stringliteral">"/scheme/dtn"</span>,
<a name="l00103"></a>00103 <span class="stringliteral">"match(%s, %s) failed: url ports not equal (%d != %d)"</span>,
<a name="l00104"></a>00104 eid.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().c_str(), pattern.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().c_str(),
<a name="l00105"></a>00105 pattern.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().port_num(), eid.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().port_num());
<a name="l00106"></a>00106 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00107"></a>00107 }
<a name="l00108"></a>00108
<a name="l00109"></a>00109 <span class="comment">// check for a wildcard path or an exact match of the path strings</span>
<a name="l00110"></a>00110 <span class="keywordflow">if</span> ((pattern.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().path() == <span class="stringliteral">"*"</span>) ||
<a name="l00111"></a>00111 (pattern.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().path() == eid.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().path()))
<a name="l00112"></a>00112 {
<a name="l00113"></a>00113 log_debug_p(<span class="stringliteral">"/scheme/dtn"</span>,
<a name="l00114"></a>00114 <span class="stringliteral">"match(%s, %s) succeeded: pattern '%s' ssp '%s'"</span>,
<a name="l00115"></a>00115 eid.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().c_str(), pattern.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().c_str(),
<a name="l00116"></a>00116 pattern.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().host().c_str(), eid.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().host().c_str());
<a name="l00117"></a>00117 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00118"></a>00118 }
<a name="l00119"></a>00119
<a name="l00120"></a>00120 <span class="comment">// finally, try supporting a trailing * to truncate the path match</span>
<a name="l00121"></a>00121 <span class="keywordtype">size_t</span> patternlen = pattern.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().path().length();
<a name="l00122"></a>00122 <span class="keywordflow">if</span> (patternlen >= 1 && pattern.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().path()[patternlen-1] == <span class="charliteral">'*'</span>) {
<a name="l00123"></a>00123 patternlen--;
<a name="l00124"></a>00124
<a name="l00125"></a>00125 <span class="keywordflow">if</span> (pattern.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().path().substr(0, patternlen) ==
<a name="l00126"></a>00126 eid.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().path().substr(0, patternlen))
<a name="l00127"></a>00127 {
<a name="l00128"></a>00128 log_debug_p(<span class="stringliteral">"/scheme/dtn"</span>,
<a name="l00129"></a>00129 <span class="stringliteral">"match(%s, %s) substring succeeded: "</span>
<a name="l00130"></a>00130 <span class="stringliteral">"pattern '%s' ssp '%s'"</span>,
<a name="l00131"></a>00131 eid.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().c_str(), pattern.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().c_str(),
<a name="l00132"></a>00132 pattern.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().host().c_str(), eid.<a class="code" href="classdtn_1_1EndpointID.html#b33fc19cda5561ca189e2051d6561db7">uri</a>().host().c_str());
<a name="l00133"></a>00133 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00134"></a>00134 }
<a name="l00135"></a>00135 }
<a name="l00136"></a>00136
<a name="l00137"></a>00137 <span class="comment">// XXX/demmer TODO: support CIDR style matching for explicit</span>
<a name="l00138"></a>00138 <span class="comment">// dotted-quad ip addresses</span>
<a name="l00139"></a>00139
<a name="l00140"></a>00140 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142
<a name="l00143"></a>00143
<a name="l00151"></a>00151 <span class="keywordtype">bool</span>
<a name="l00152"></a><a class="code" href="classdtn_1_1TCAScheme.html#b77d42e824c16a24055df4cefec21e13">00152</a> <a class="code" href="classdtn_1_1TCAScheme.html#b77d42e824c16a24055df4cefec21e13" title="Append the given service tag to the URI in a scheme-specific manner.">TCAScheme::append_service_tag</a>(<a class="code" href="namespacedtn.html#0b3883e065c5b300f2581971eee1c009">URI</a>* uri, <span class="keyword">const</span> <span class="keywordtype">char</span>* tag)
<a name="l00153"></a>00153 {
<a name="l00154"></a>00154 <span class="keywordflow">if</span> (tag[0] != <span class="charliteral">'/'</span>) {
<a name="l00155"></a>00155 uri->set_path(std::string(<span class="stringliteral">"/"</span>) + tag);
<a name="l00156"></a>00156 } <span class="keywordflow">else</span> {
<a name="l00157"></a>00157 uri->set_path(tag);
<a name="l00158"></a>00158 }
<a name="l00159"></a>00159 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00160"></a>00160 }
<a name="l00161"></a>00161
<a name="l00162"></a>00162 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00163"></a>00163 <a class="code" href="classdtn_1_1EndpointID.html#43d537f639ac64ca9b401701dae46f28" title="Typedef for the return value possibilities from is_singleton.">Scheme::singleton_info_t</a>
<a name="l00164"></a><a class="code" href="classdtn_1_1TCAScheme.html#3b8a8d50b0a4103b7875491ab1bcb3e1">00164</a> <a class="code" href="classdtn_1_1TCAScheme.html#3b8a8d50b0a4103b7875491ab1bcb3e1" title="Check if the given URI is a singleton EID.">TCAScheme::is_singleton</a>(<span class="keyword">const</span> <a class="code" href="namespacedtn.html#0b3883e065c5b300f2581971eee1c009">URI</a>& uri)
<a name="l00165"></a>00165 {
<a name="l00166"></a>00166 <span class="comment">// if there's a * in the hostname part of the URI, then it's not a</span>
<a name="l00167"></a>00167 <span class="comment">// singleton endpoint</span>
<a name="l00168"></a>00168 <span class="keywordflow">if</span> (uri.host().find(<span class="charliteral">'*'</span>) != std::string::npos) {
<a name="l00169"></a>00169 <span class="keywordflow">return</span> <a class="code" href="classdtn_1_1EndpointID.html#43d537f639ac64ca9b401701dae46f28bc86c59b022718d9c03053b5f9600707">EndpointID::MULTINODE</a>;
<a name="l00170"></a>00170 }
<a name="l00171"></a>00171
<a name="l00172"></a>00172 <span class="keywordflow">return</span> <a class="code" href="classdtn_1_1EndpointID.html#43d537f639ac64ca9b401701dae46f287fc9114949151beb443fe5b9b92eac2d">EndpointID::SINGLETON</a>;
<a name="l00173"></a>00173 }
<a name="l00174"></a>00174
<a name="l00175"></a>00175 } <span class="comment">// namespace dtn</span>
</pre></div></div>
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