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<h1>ksrvresolverworker.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- C++ -*-</span>
<a name="l00002"></a>00002 <span class="comment"> * Copyright (C) 2005 Thiago Macieira <thiago@kde.org></span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
<a name="l00005"></a>00005 <span class="comment"> * modify it under the terms of the GNU Library General Public</span>
<a name="l00006"></a>00006 <span class="comment"> * License as published by the Free Software Foundation; either</span>
<a name="l00007"></a>00007 <span class="comment"> * version 2 of the License, or (at your option) any later version.</span>
<a name="l00008"></a>00008 <span class="comment"> *</span>
<a name="l00009"></a>00009 <span class="comment"> * This library is distributed in the hope that it will be useful,</span>
<a name="l00010"></a>00010 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00011"></a>00011 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00012"></a>00012 <span class="comment"> * Library General Public License for more details.</span>
<a name="l00013"></a>00013 <span class="comment"> *</span>
<a name="l00014"></a>00014 <span class="comment"> * You should have received a copy of the GNU Library General Public License</span>
<a name="l00015"></a>00015 <span class="comment"> * along with this library; see the file COPYING.LIB. If not, write to</span>
<a name="l00016"></a>00016 <span class="comment"> * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,</span>
<a name="l00017"></a>00017 <span class="comment"> * Boston, MA 02110-1301, USA.</span>
<a name="l00018"></a>00018 <span class="comment"> */</span>
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="preprocessor">#include <config.h></span>
<a name="l00021"></a>00021
<a name="l00022"></a>00022 <span class="preprocessor">#include "ksrvresolverworker_p.h"</span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="preprocessor">#include <sys/types.h></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <sys/socket.h></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="preprocessor">#include <qapplication.h></span>
<a name="l00029"></a>00029 <span class="preprocessor">#include <qevent.h></span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="keyword">using</span> <span class="keyword">namespace </span>KNetwork;
<a name="l00032"></a>00032 <span class="keyword">using</span> <span class="keyword">namespace </span>KNetwork::Internal;
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="keyword">namespace </span>
<a name="l00035"></a>00035 <span class="keyword"></span>{
<a name="l00036"></a>00036 <span class="keyword">struct </span>KSrvStartEvent: <span class="keyword">public</span> <a class="codeRef" doxygen="qt.tag:" href="qcustomevent.html">QCustomEvent</a>
<a name="l00037"></a>00037 {
<a name="l00038"></a>00038 <span class="keyword">inline</span> KSrvStartEvent() : <a class="codeRef" doxygen="qt.tag:" href="qcustomevent.html">QCustomEvent</a>(<a class="codeRef" doxygen="qt.tag:" href="qevent.html">QEvent</a>::User) { }
<a name="l00039"></a>00039 };
<a name="l00040"></a>00040 }
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <span class="keyword">static</span> <span class="keywordtype">void</span> sortPriorityClass(KSrvResolverWorker::PriorityClass&)
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044 <span class="comment">// do nothing</span>
<a name="l00045"></a>00045 }
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="keywordtype">bool</span> KSrvResolverWorker::preprocess()
<a name="l00048"></a>00048 {
<a name="l00049"></a>00049 <span class="comment">// check if the resolver flags mention SRV-based lookup</span>
<a name="l00050"></a>00050 <span class="keywordflow">if</span> ((flags() & (KResolver::NoSrv | KResolver::UseSrv)) != KResolver::UseSrv)
<a name="l00051"></a>00051 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00052"></a>00052
<a name="l00053"></a>00053 <a class="codeRef" doxygen="qt.tag:" href="qstring.html">QString</a> node = nodeName();
<a name="l00054"></a>00054 <span class="keywordflow">if</span> (node.<a class="codeRef" doxygen="qt.tag:" href="qstring.html#find">find</a>(<span class="charliteral">'%'</span>) != -1)
<a name="l00055"></a>00055 node.<a class="codeRef" doxygen="qt.tag:" href="qstring.html#truncate">truncate</a>(node.<a class="codeRef" doxygen="qt.tag:" href="qstring.html#find">find</a>(<span class="charliteral">'%'</span>));
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <span class="keywordflow">if</span> (node.<a class="codeRef" doxygen="qt.tag:" href="qstring.html#isEmpty">isEmpty</a>() || node == <a class="codeRef" doxygen="qt.tag:" href="qstring.html#fromLatin1">QString::fromLatin1</a>(<span class="stringliteral">"*"</span>) ||
<a name="l00058"></a>00058 node == <a class="codeRef" doxygen="qt.tag:" href="qstring.html#fromLatin1">QString::fromLatin1</a>(<span class="stringliteral">"localhost"</span>))
<a name="l00059"></a>00059 <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">// empty == localhost</span>
<a name="l00060"></a>00060
<a name="l00061"></a>00061 encodedName = KResolver::domainToAscii(node);
<a name="l00062"></a>00062 <span class="keywordflow">if</span> (encodedName.isNull())
<a name="l00063"></a>00063 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00064"></a>00064
<a name="l00065"></a>00065 <span class="comment">// we only work with Internet-based families</span>
<a name="l00066"></a>00066 <span class="keywordflow">if</span> ((familyMask() & KResolver::InternetFamily) == 0)
<a name="l00067"></a>00067 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00068"></a>00068
<a name="l00069"></a>00069 <span class="comment">// SRV-based resolution only works if the service isn't numeric</span>
<a name="l00070"></a>00070 <span class="keywordtype">bool</span> ok;
<a name="l00071"></a>00071 serviceName().toUInt(&ok);
<a name="l00072"></a>00072 <span class="keywordflow">if</span> (ok)
<a name="l00073"></a>00073 <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">// it is numeric</span>
<a name="l00074"></a>00074
<a name="l00075"></a>00075 <span class="comment">// check the protocol for something we know</span>
<a name="l00076"></a>00076 <a class="codeRef" doxygen="qt.tag:" href="qcstring.html">QCString</a> protoname;
<a name="l00077"></a>00077 <span class="keywordtype">int</span> sockettype = socketType();
<a name="l00078"></a>00078 <span class="keywordflow">if</span> (!protocolName().<a class="codeRef" doxygen="qt.tag:" href="qvaluelist.html#isEmpty">isEmpty</a>())
<a name="l00079"></a>00079 protoname = protocolName();
<a name="l00080"></a>00080 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (protocol() != 0)
<a name="l00081"></a>00081 {
<a name="l00082"></a>00082 <a class="codeRef" doxygen="qt.tag:" href="qstrlist.html">QStrList</a> names = KResolver::protocolName(protocol());
<a name="l00083"></a>00083 names.setAutoDelete(<span class="keyword">true</span>);
<a name="l00084"></a>00084 <span class="keywordflow">if</span> (names.isEmpty())
<a name="l00085"></a>00085 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00086"></a>00086
<a name="l00087"></a>00087 protoname = <span class="stringliteral">"_"</span>;
<a name="l00088"></a>00088 protoname += names.at(0);
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sockettype == SOCK_STREAM || sockettype == 0)
<a name="l00091"></a>00091 protoname = <span class="stringliteral">"_tcp"</span>;
<a name="l00092"></a>00092 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sockettype == SOCK_DGRAM)
<a name="l00093"></a>00093 protoname = <span class="stringliteral">"_udp"</span>;
<a name="l00094"></a>00094 <span class="keywordflow">else</span>
<a name="l00095"></a>00095 <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">// unknown protocol and socket type</span>
<a name="l00096"></a>00096
<a name="l00097"></a>00097 encodedName.<a class="codeRef" doxygen="qt.tag:" href="qcstring.html#prepend">prepend</a>(<span class="stringliteral">"."</span>);
<a name="l00098"></a>00098 encodedName.prepend(protoname);
<a name="l00099"></a>00099 encodedName.prepend(<span class="stringliteral">"."</span>);
<a name="l00100"></a>00100 encodedName.prepend(serviceName().latin1());
<a name="l00101"></a>00101 encodedName.prepend(<span class="stringliteral">"_"</span>);
<a name="l00102"></a>00102
<a name="l00103"></a>00103 <span class="comment">// looks like something we could process</span>
<a name="l00104"></a>00104 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00105"></a>00105 }
<a name="l00106"></a>00106
<a name="l00107"></a>00107 <span class="keywordtype">bool</span> KSrvResolverWorker::run()
<a name="l00108"></a>00108 {
<a name="l00109"></a>00109 sem = <span class="keyword">new</span> <a class="codeRef" doxygen="qt.tag:" href="qsemaphore.html">QSemaphore</a>(1);
<a name="l00110"></a>00110 <span class="comment">// zero out</span>
<a name="l00111"></a>00111 sem->tryAccess(sem->available());
<a name="l00112"></a>00112
<a name="l00113"></a>00113 <a class="codeRef" doxygen="qt.tag:" href="qapplication.html#postEvent">QApplication::postEvent</a>(<span class="keyword">this</span>, <span class="keyword">new</span> KSrvStartEvent);
<a name="l00114"></a>00114
<a name="l00115"></a>00115 <span class="comment">// block</span>
<a name="l00116"></a>00116 (*sem)++;
<a name="l00117"></a>00117 <span class="keyword">delete</span> sem;
<a name="l00118"></a>00118 sem = 0L;
<a name="l00119"></a>00119
<a name="l00120"></a>00120 <span class="keywordflow">if</span> (rawResults.isEmpty())
<a name="l00121"></a>00121 {
<a name="l00122"></a>00122 <span class="comment">// normal lookup</span>
<a name="l00123"></a>00123 <a class="code" href="classKNetwork_1_1KResolver.html">KResolver</a> *r = <span class="keyword">new</span> <a class="code" href="classKNetwork_1_1KResolver.html">KResolver</a>(nodeName(), serviceName());
<a name="l00124"></a>00124 r-><a class="code" href="classKNetwork_1_1KResolver.html#a14">setFlags</a>(flags() | KResolver::NoSrv);
<a name="l00125"></a>00125 r-><a class="code" href="classKNetwork_1_1KResolver.html#a15">setFamily</a>(familyMask());
<a name="l00126"></a>00126 r-><a class="code" href="classKNetwork_1_1KResolver.html#a16">setSocketType</a>(socketType());
<a name="l00127"></a>00127 r-><a class="code" href="classKNetwork_1_1KResolver.html#a17">setProtocol</a>(protocol(), protocolName());
<a name="l00128"></a>00128
<a name="l00129"></a>00129 enqueue(r);
<a name="l00130"></a>00130
<a name="l00131"></a>00131 Entry e;
<a name="l00132"></a>00132 PriorityClass cl;
<a name="l00133"></a>00133 e.resolver = r;
<a name="l00134"></a>00134 cl.entries.append(e);
<a name="l00135"></a>00135 myResults[0] = cl;
<a name="l00136"></a>00136
<a name="l00137"></a>00137 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00138"></a>00138 }
<a name="l00139"></a>00139 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (rawResults.count() == 1 && rawResults.first().name == <span class="stringliteral">"."</span>)
<a name="l00140"></a>00140 {
<a name="l00141"></a>00141 <span class="comment">// no name</span>
<a name="l00142"></a>00142 setError(KResolver::NoName);
<a name="l00143"></a>00143 finished();
<a name="l00144"></a>00144 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00145"></a>00145 }
<a name="l00146"></a>00146 <span class="keywordflow">else</span>
<a name="l00147"></a>00147 {
<a name="l00148"></a>00148 <span class="comment">// now process the results</span>
<a name="l00149"></a>00149 <a class="codeRef" doxygen="qt.tag:" href="qvaluelist.html">QValueList<QDns::Server></a><a class="codeRef" doxygen="qt.tag:" href="qvaluelist.html#ConstIterator">::ConstIterator</a> it = rawResults.begin();
<a name="l00150"></a>00150 <span class="keywordflow">while</span> (it != rawResults.<a class="codeRef" doxygen="qt.tag:" href="qvaluelist.html#end">end</a>())
<a name="l00151"></a>00151 {
<a name="l00152"></a>00152 <span class="keyword">const</span> QDns::Server& srv = *it;
<a name="l00153"></a>00153 PriorityClass& r = myResults[srv.priority];
<a name="l00154"></a>00154 r.totalWeight += srv.weight;
<a name="l00155"></a>00155
<a name="l00156"></a>00156 Entry e;
<a name="l00157"></a>00157 e.<a class="codeRef" doxygen="qt.tag:" href="qobject.html#name">name</a> = srv.name;
<a name="l00158"></a>00158 e.port = srv.port;
<a name="l00159"></a>00159 e.weight = srv.weight;
<a name="l00160"></a>00160 e.resolver = 0L;
<a name="l00161"></a>00161 r.entries.append(e);
<a name="l00162"></a>00162
<a name="l00163"></a>00163 ++it;
<a name="l00164"></a>00164 }
<a name="l00165"></a>00165 rawResults.<a class="codeRef" doxygen="qt.tag:" href="qvaluelist.html#clear">clear</a>(); <span class="comment">// free memory</span>
<a name="l00166"></a>00166
<a name="l00167"></a>00167 Results::Iterator mapit;
<a name="l00168"></a>00168 <span class="keywordflow">for</span> (mapit = myResults.begin(); mapit != myResults.end(); ++mapit)
<a name="l00169"></a>00169 {
<a name="l00170"></a>00170 <span class="comment">// sort the priority</span>
<a name="l00171"></a>00171 sortPriorityClass(*mapit);
<a name="l00172"></a>00172
<a name="l00173"></a>00173 <a class="codeRef" doxygen="qt.tag:" href="qvaluelist.html">QValueList<Entry></a>& entries = (*mapit).entries;
<a name="l00174"></a>00174
<a name="l00175"></a>00175 <span class="comment">// start the resolvers</span>
<a name="l00176"></a>00176 <span class="keywordflow">for</span> (<a class="codeRef" doxygen="qt.tag:" href="qvaluelist.html">QValueList<Entry></a>::<a class="codeRef" doxygen="qt.tag:" href="qvaluelist.html#Iterator">Iterator</a> it = entries.<a class="codeRef" doxygen="qt.tag:" href="qvaluelist.html#begin">begin</a>();
<a name="l00177"></a>00177 it != entries.<a class="codeRef" doxygen="qt.tag:" href="qvaluelist.html#end">end</a>(); ++it)
<a name="l00178"></a>00178 {
<a name="l00179"></a>00179 Entry &e = *it;
<a name="l00180"></a>00180
<a name="l00181"></a>00181 <a class="code" href="classKNetwork_1_1KResolver.html">KResolver</a>* r = <span class="keyword">new</span> <a class="code" href="classKNetwork_1_1KResolver.html">KResolver</a>(e.name, <a class="codeRef" doxygen="qt.tag:" href="qstring.html#number">QString::number</a>(e.port));
<a name="l00182"></a>00182 r-><a class="code" href="classKNetwork_1_1KResolver.html#a14">setFlags</a>(flags() | KResolver::NoSrv);
<a name="l00183"></a>00183 r-><a class="code" href="classKNetwork_1_1KResolver.html#a15">setFamily</a>(familyMask());
<a name="l00184"></a>00184 r-><a class="code" href="classKNetwork_1_1KResolver.html#a16">setSocketType</a>(socketType());
<a name="l00185"></a>00185 r-><a class="code" href="classKNetwork_1_1KResolver.html#a17">setProtocol</a>(protocol(), protocolName());
<a name="l00186"></a>00186
<a name="l00187"></a>00187 enqueue(r);
<a name="l00188"></a>00188 e.resolver = r;
<a name="l00189"></a>00189 }
<a name="l00190"></a>00190 }
<a name="l00191"></a>00191
<a name="l00192"></a>00192 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00193"></a>00193 }
<a name="l00194"></a>00194 }
<a name="l00195"></a>00195
<a name="l00196"></a>00196 <span class="keywordtype">bool</span> KSrvResolverWorker::postprocess()
<a name="l00197"></a>00197 {
<a name="l00198"></a>00198 setError(KResolver::NoName);
<a name="l00199"></a>00199 <span class="keywordflow">if</span> (myResults.isEmpty())
<a name="l00200"></a>00200 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00201"></a>00201
<a name="l00202"></a>00202 Results::Iterator mapit, mapend;
<a name="l00203"></a>00203 <span class="keywordflow">for</span> (mapit = myResults.begin(), mapend = myResults.end();
<a name="l00204"></a>00204 mapit != mapend; ++mapit)
<a name="l00205"></a>00205 {
<a name="l00206"></a>00206 <a class="codeRef" doxygen="qt.tag:" href="qvaluelist.html">QValueList<Entry></a><a class="codeRef" doxygen="qt.tag:" href="qvaluelist.html#Iterator">::Iterator</a> it = (*mapit).entries.<a class="codeRef" doxygen="qt.tag:" href="qvaluelist.html#begin">begin</a>(),
<a name="l00207"></a>00207 <a class="codeRef" doxygen="qt.tag:" href="qvaluelist.html#end">end</a> = (*mapit).entries.end();
<a name="l00208"></a>00208 <span class="keywordflow">for</span> ( ; it != <a class="codeRef" doxygen="qt.tag:" href="qvaluelist.html#end">end</a>; ++it)
<a name="l00209"></a>00209 {
<a name="l00210"></a>00210 Entry &e = *it;
<a name="l00211"></a>00211 <a class="code" href="classKNetwork_1_1KResolverResults.html">KResolverResults</a> r = e.resolver-><a class="code" href="classKNetwork_1_1KResolver.html#a21">results</a>();
<a name="l00212"></a>00212 <span class="keywordflow">if</span> (r.<a class="codeRef" doxygen="qt.tag:" href="qvaluelist.html#isEmpty">isEmpty</a>() && results.isEmpty())
<a name="l00213"></a>00213 setError(r.<a class="code" href="classKNetwork_1_1KResolverResults.html#a4">error</a>(), r.<a class="code" href="classKNetwork_1_1KResolverResults.html#a5">systemError</a>());
<a name="l00214"></a>00214 <span class="keywordflow">else</span>
<a name="l00215"></a>00215 {
<a name="l00216"></a>00216 setError(KResolver::NoError);
<a name="l00217"></a>00217 results += r;
<a name="l00218"></a>00218 }
<a name="l00219"></a>00219 }
<a name="l00220"></a>00220 }
<a name="l00221"></a>00221
<a name="l00222"></a>00222 finished();
<a name="l00223"></a>00223 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00224"></a>00224 }
<a name="l00225"></a>00225
<a name="l00226"></a>00226 <span class="keywordtype">void</span> KSrvResolverWorker::customEvent(<a class="codeRef" doxygen="qt.tag:" href="qcustomevent.html">QCustomEvent</a>*)
<a name="l00227"></a>00227 {
<a name="l00228"></a>00228 dns = <span class="keyword">new</span> <a class="codeRef" doxygen="qt.tag:" href="qdns.html">QDns</a>(<a class="codeRef" doxygen="qt.tag:" href="qstring.html#fromLatin1">QString::fromLatin1</a>(encodedName), QDns::Srv);
<a name="l00229"></a>00229 <a class="codeRef" doxygen="qt.tag:" href="qobject.html#connect">QObject::connect</a>(dns, SIGNAL(resultsReady()), <span class="keyword">this</span>, SLOT(dnsResultsReady()));
<a name="l00230"></a>00230 }
<a name="l00231"></a>00231
<a name="l00232"></a>00232 <span class="keywordtype">void</span> KSrvResolverWorker::dnsResultsReady()
<a name="l00233"></a>00233 {
<a name="l00234"></a>00234 (*sem)--;
<a name="l00235"></a>00235 rawResults = dns->servers();
<a name="l00236"></a>00236 dns->deleteLater();
<a name="l00237"></a>00237 dns = 0L;
<a name="l00238"></a>00238 }
<a name="l00239"></a>00239
<a name="l00240"></a>00240 <span class="keyword">namespace </span>KNetwork
<a name="l00241"></a>00241 {
<a name="l00242"></a>00242 <span class="keyword">namespace </span>Internal
<a name="l00243"></a>00243 {
<a name="l00244"></a>00244
<a name="l00245"></a>00245 <span class="keywordtype">void</span> <a class="code" href="namespaceKNetwork_1_1Internal.html#a0">initSrvWorker</a>() KDE_NO_EXPORT;
<a name="l00246"></a><a class="code" href="namespaceKNetwork_1_1Internal.html#a0">00246</a> <span class="keywordtype">void</span> <a class="code" href="namespaceKNetwork_1_1Internal.html#a0">initSrvWorker</a>()
<a name="l00247"></a>00247 {
<a name="l00248"></a>00248 <span class="keywordflow">if</span> (getenv(<span class="stringliteral">"KDE_NO_SRV"</span>) != NULL)
<a name="l00249"></a>00249 <span class="keywordflow">return</span>;
<a name="l00250"></a>00250
<a name="l00251"></a>00251 <a class="code" href="classKNetwork_1_1KResolverWorkerFactoryBase.html#e0">KResolverWorkerFactoryBase::registerNewWorker</a>(<span class="keyword">new</span> <a class="code" href="classKNetwork_1_1KResolverWorkerFactory.html">KResolverWorkerFactory<KSrvResolverWorker></a>);
<a name="l00252"></a>00252 }
<a name="l00253"></a>00253
<a name="l00254"></a>00254 }
<a name="l00255"></a>00255 }
<a name="l00256"></a>00256
<a name="l00257"></a>00257 <span class="preprocessor">#include "ksrvresolverworker_p.moc"</span>
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