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<div class="title">http_cache_cleaner.cpp</div> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment">This file is part of KDE</span>
<a name="l00003"></a>00003 <span class="comment"></span>
<a name="l00004"></a>00004 <span class="comment"> Copyright (C) 1999-2000 Waldo Bastian (bastian@kde.org)</span>
<a name="l00005"></a>00005 <span class="comment"></span>
<a name="l00006"></a>00006 <span class="comment">Permission is hereby granted, free of charge, to any person obtaining a copy</span>
<a name="l00007"></a>00007 <span class="comment">of this software and associated documentation files (the "Software"), to deal</span>
<a name="l00008"></a>00008 <span class="comment">in the Software without restriction, including without limitation the rights</span>
<a name="l00009"></a>00009 <span class="comment">to use, copy, modify, merge, publish, distribute, and/or sell</span>
<a name="l00010"></a>00010 <span class="comment">copies of the Software, and to permit persons to whom the Software is</span>
<a name="l00011"></a>00011 <span class="comment">furnished to do so, subject to the following conditions:</span>
<a name="l00012"></a>00012 <span class="comment"></span>
<a name="l00013"></a>00013 <span class="comment">The above copyright notice and this permission notice shall be included in</span>
<a name="l00014"></a>00014 <span class="comment">all copies or substantial portions of the Software.</span>
<a name="l00015"></a>00015 <span class="comment"></span>
<a name="l00016"></a>00016 <span class="comment">THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span>
<a name="l00017"></a>00017 <span class="comment">IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span>
<a name="l00018"></a>00018 <span class="comment">FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span>
<a name="l00019"></a>00019 <span class="comment">AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN</span>
<a name="l00020"></a>00020 <span class="comment">AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN</span>
<a name="l00021"></a>00021 <span class="comment">CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.</span>
<a name="l00022"></a>00022 <span class="comment">*/</span>
<a name="l00023"></a>00023 <span class="comment">//----------------------------------------------------------------------------</span>
<a name="l00024"></a>00024 <span class="comment">//</span>
<a name="l00025"></a>00025 <span class="comment">// KDE Http Cache cleanup tool</span>
<a name="l00026"></a>00026 <span class="comment">// $Id: http_cache_cleaner.cpp 362866 2004-11-14 10:54:13Z mueller $</span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="preprocessor">#include <time.h></span>
<a name="l00029"></a>00029 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="preprocessor">#include <qdir.h></span>
<a name="l00032"></a>00032 <span class="preprocessor">#include <qstring.h></span>
<a name="l00033"></a>00033 <span class="preprocessor">#include <qptrlist.h></span>
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <span class="preprocessor">#include <kinstance.h></span>
<a name="l00036"></a>00036 <span class="preprocessor">#include <klocale.h></span>
<a name="l00037"></a>00037 <span class="preprocessor">#include <kcmdlineargs.h></span>
<a name="l00038"></a>00038 <span class="preprocessor">#include <kglobal.h></span>
<a name="l00039"></a>00039 <span class="preprocessor">#include <kstandarddirs.h></span>
<a name="l00040"></a>00040 <span class="preprocessor">#include <dcopclient.h></span>
<a name="l00041"></a>00041 <span class="preprocessor">#include <kprotocolmanager.h></span>
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="preprocessor">#include <unistd.h></span>
<a name="l00044"></a>00044
<a name="l00045"></a>00045 <span class="preprocessor">#include <kdebug.h></span>
<a name="l00046"></a>00046
<a name="l00047"></a>00047 time_t currentDate;
<a name="l00048"></a>00048 <span class="keywordtype">int</span> m_maxCacheAge;
<a name="l00049"></a>00049 <span class="keywordtype">int</span> m_maxCacheSize;
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> appName[] = <span class="stringliteral">"kio_http_cache_cleaner"</span>;
<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> description[] = I18N_NOOP(<span class="stringliteral">"KDE HTTP cache maintenance tool"</span>);
<a name="l00054"></a>00054
<a name="l00055"></a>00055 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> version[] = <span class="stringliteral">"1.0.0"</span>;
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <span class="keyword">static</span> <span class="keyword">const</span> KCmdLineOptions options[] =
<a name="l00058"></a>00058 {
<a name="l00059"></a>00059 {<span class="stringliteral">"clear-all"</span>, I18N_NOOP(<span class="stringliteral">"Empty the cache"</span>), 0},
<a name="l00060"></a>00060 KCmdLineLastOption
<a name="l00061"></a>00061 };
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="keyword">struct </span>FileInfo {
<a name="l00064"></a>00064 <a class="codeRef" href="qstring.html">QString</a> name;
<a name="l00065"></a>00065 <span class="keywordtype">int</span> size; <span class="comment">// Size in Kb.</span>
<a name="l00066"></a>00066 <span class="keywordtype">int</span> age;
<a name="l00067"></a>00067 };
<a name="l00068"></a>00068
<a name="l00069"></a>00069 <span class="keyword">template</span> <span class="keyword">class </span><a class="codeRef" href="qptrlist.html">QPtrList<FileInfo></a>;
<a name="l00070"></a>00070
<a name="l00071"></a>00071 <span class="keyword">class </span>FileInfoList : <span class="keyword">public</span> <a class="codeRef" href="qptrlist.html">QPtrList<FileInfo></a>
<a name="l00072"></a>00072 {
<a name="l00073"></a>00073 <span class="keyword">public</span>:
<a name="l00074"></a>00074 FileInfoList() : <a class="codeRef" href="qptrlist.html">QPtrList</a><FileInfo>() { }
<a name="l00075"></a>00075 <span class="keywordtype">int</span> compareItems(<a class="codeRef" href="qptrcollection.html#Item">QPtrCollection::Item</a> item1, <a class="codeRef" href="qptrcollection.html#Item">QPtrCollection::Item</a> item2)
<a name="l00076"></a>00076 { <span class="keywordflow">return</span> ((FileInfo *)item1)->age - ((FileInfo *)item2)->age; }
<a name="l00077"></a>00077 };
<a name="l00078"></a>00078
<a name="l00079"></a>00079 <span class="comment">// !START OF SYNC!</span>
<a name="l00080"></a>00080 <span class="comment">// Keep the following in sync with the cache code in http.cc</span>
<a name="l00081"></a>00081 <span class="preprocessor">#define CACHE_REVISION "7\n"</span>
<a name="l00082"></a>00082 <span class="preprocessor"></span>
<a name="l00083"></a>00083 FileInfo *readEntry( <span class="keyword">const</span> <a class="codeRef" href="qstring.html">QString</a> &filename)
<a name="l00084"></a>00084 {
<a name="l00085"></a>00085 <a class="codeRef" href="qcstring.html">QCString</a> CEF = <a class="codeRef" href="qfile.html#encodeName">QFile::encodeName</a>(filename);
<a name="l00086"></a>00086 FILE *fs = fopen( CEF.data(), <span class="stringliteral">"r"</span>);
<a name="l00087"></a>00087 <span class="keywordflow">if</span> (!fs)
<a name="l00088"></a>00088 <span class="keywordflow">return</span> 0;
<a name="l00089"></a>00089
<a name="l00090"></a>00090 <span class="keywordtype">char</span> buffer[401];
<a name="l00091"></a>00091 <span class="keywordtype">bool</span> ok = <span class="keyword">true</span>;
<a name="l00092"></a>00092
<a name="l00093"></a>00093 <span class="comment">// CacheRevision</span>
<a name="l00094"></a>00094 <span class="keywordflow">if</span> (ok && (!fgets(buffer, 400, fs)))
<a name="l00095"></a>00095 ok = <span class="keyword">false</span>;
<a name="l00096"></a>00096 <span class="keywordflow">if</span> (ok && (strcmp(buffer, CACHE_REVISION) != 0))
<a name="l00097"></a>00097 ok = <span class="keyword">false</span>;
<a name="l00098"></a>00098
<a name="l00099"></a>00099 <span class="comment">// Full URL</span>
<a name="l00100"></a>00100 <span class="keywordflow">if</span> (ok && (!fgets(buffer, 400, fs)))
<a name="l00101"></a>00101 ok = <span class="keyword">false</span>;
<a name="l00102"></a>00102
<a name="l00103"></a>00103 time_t creationDate;
<a name="l00104"></a>00104 <span class="keywordtype">int</span> age =0;
<a name="l00105"></a>00105
<a name="l00106"></a>00106 <span class="comment">// Creation Date</span>
<a name="l00107"></a>00107 <span class="keywordflow">if</span> (ok && (!fgets(buffer, 400, fs)))
<a name="l00108"></a>00108 ok = <span class="keyword">false</span>;
<a name="l00109"></a>00109 <span class="keywordflow">if</span> (ok)
<a name="l00110"></a>00110 {
<a name="l00111"></a>00111 creationDate = (time_t) strtoul(buffer, 0, 10);
<a name="l00112"></a>00112 age = (int) difftime(currentDate, creationDate);
<a name="l00113"></a>00113 <span class="keywordflow">if</span> ( m_maxCacheAge && ( age > m_maxCacheAge))
<a name="l00114"></a>00114 {
<a name="l00115"></a>00115 ok = <span class="keyword">false</span>; <span class="comment">// Expired</span>
<a name="l00116"></a>00116 }
<a name="l00117"></a>00117 }
<a name="l00118"></a>00118
<a name="l00119"></a>00119 <span class="comment">// Expiration Date</span>
<a name="l00120"></a>00120 <span class="keywordflow">if</span> (ok && (!fgets(buffer, 400, fs)))
<a name="l00121"></a>00121 ok = <span class="keyword">false</span>;
<a name="l00122"></a>00122 <span class="keywordflow">if</span> (ok)
<a name="l00123"></a>00123 {
<a name="l00124"></a>00124 <span class="comment">//WABA: It seems I slightly misunderstood the meaning of "Expire:" header.</span>
<a name="l00125"></a>00125 <span class="preprocessor">#if 0</span>
<a name="l00126"></a>00126 <span class="preprocessor"></span> time_t expireDate;
<a name="l00127"></a>00127 expireDate = (time_t) strtoul(buffer, 0, 10);
<a name="l00128"></a>00128 <span class="keywordflow">if</span> (expireDate && (expireDate < currentDate))
<a name="l00129"></a>00129 ok = <span class="keyword">false</span>; <span class="comment">// Expired</span>
<a name="l00130"></a>00130 <span class="preprocessor">#endif</span>
<a name="l00131"></a>00131 <span class="preprocessor"></span> }
<a name="l00132"></a>00132
<a name="l00133"></a>00133 <span class="comment">// ETag</span>
<a name="l00134"></a>00134 <span class="keywordflow">if</span> (ok && (!fgets(buffer, 400, fs)))
<a name="l00135"></a>00135 ok = <span class="keyword">false</span>;
<a name="l00136"></a>00136 <span class="keywordflow">if</span> (ok)
<a name="l00137"></a>00137 {
<a name="l00138"></a>00138 <span class="comment">// Ignore ETag</span>
<a name="l00139"></a>00139 }
<a name="l00140"></a>00140
<a name="l00141"></a>00141 <span class="comment">// Last-Modified</span>
<a name="l00142"></a>00142 <span class="keywordflow">if</span> (ok && (!fgets(buffer, 400, fs)))
<a name="l00143"></a>00143 ok = <span class="keyword">false</span>;
<a name="l00144"></a>00144 <span class="keywordflow">if</span> (ok)
<a name="l00145"></a>00145 {
<a name="l00146"></a>00146 <span class="comment">// Ignore Last-Modified</span>
<a name="l00147"></a>00147 }
<a name="l00148"></a>00148
<a name="l00149"></a>00149
<a name="l00150"></a>00150 fclose(fs);
<a name="l00151"></a>00151 <span class="keywordflow">if</span> (ok)
<a name="l00152"></a>00152 {
<a name="l00153"></a>00153 FileInfo *info = <span class="keyword">new</span> FileInfo;
<a name="l00154"></a>00154 info->age = age;
<a name="l00155"></a>00155 <span class="keywordflow">return</span> info;
<a name="l00156"></a>00156 }
<a name="l00157"></a>00157
<a name="l00158"></a>00158 unlink( CEF.data());
<a name="l00159"></a>00159 <span class="keywordflow">return</span> 0;
<a name="l00160"></a>00160 }
<a name="l00161"></a>00161 <span class="comment">// Keep the above in sync with the cache code in http.cc</span>
<a name="l00162"></a>00162 <span class="comment">// !END OF SYNC!</span>
<a name="l00163"></a>00163
<a name="l00164"></a>00164 <span class="keywordtype">void</span> scanDirectory(FileInfoList &fileEntries, <span class="keyword">const</span> <a class="codeRef" href="qstring.html">QString</a> &name, <span class="keyword">const</span> <a class="codeRef" href="qstring.html">QString</a> &strDir)
<a name="l00165"></a>00165 {
<a name="l00166"></a>00166 <a class="codeRef" href="qdir.html">QDir</a> dir(strDir);
<a name="l00167"></a>00167 <span class="keywordflow">if</span> (!dir.exists()) <span class="keywordflow">return</span>;
<a name="l00168"></a>00168
<a name="l00169"></a>00169 QFileInfoList *newEntries = (QFileInfoList *) dir.entryInfoList();
<a name="l00170"></a>00170
<a name="l00171"></a>00171 <span class="keywordflow">if</span> (!newEntries) <span class="keywordflow">return</span>; <span class="comment">// Directory not accessible ??</span>
<a name="l00172"></a>00172
<a name="l00173"></a>00173 <span class="keywordflow">for</span>(<a class="codeRef" href="qfileinfo.html">QFileInfo</a> *qFileInfo = newEntries->first();
<a name="l00174"></a>00174 qFileInfo;
<a name="l00175"></a>00175 qFileInfo = newEntries->next())
<a name="l00176"></a>00176 {
<a name="l00177"></a>00177 <span class="keywordflow">if</span> (qFileInfo->isFile())
<a name="l00178"></a>00178 {
<a name="l00179"></a>00179 FileInfo *fileInfo = readEntry( strDir + <span class="stringliteral">"/"</span> + qFileInfo->fileName());
<a name="l00180"></a>00180 <span class="keywordflow">if</span> (fileInfo)
<a name="l00181"></a>00181 {
<a name="l00182"></a>00182 fileInfo->name = name + <span class="stringliteral">"/"</span> + qFileInfo->fileName();
<a name="l00183"></a>00183 fileInfo->size = (qFileInfo->size() + 1023) / 1024;
<a name="l00184"></a>00184 fileEntries.append(fileInfo);
<a name="l00185"></a>00185 }
<a name="l00186"></a>00186 }
<a name="l00187"></a>00187 }
<a name="l00188"></a>00188 }
<a name="l00189"></a>00189
<a name="l00190"></a>00190 <span class="keyword">extern</span> <span class="stringliteral">"C"</span> KDE_EXPORT <span class="keywordtype">int</span> kdemain(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> **argv)
<a name="l00191"></a>00191 {
<a name="l00192"></a>00192 KLocale::setMainCatalogue(<span class="stringliteral">"kdelibs"</span>);
<a name="l00193"></a>00193 KCmdLineArgs::init( argc, argv, appName,
<a name="l00194"></a>00194 I18N_NOOP(<span class="stringliteral">"KDE HTTP cache maintenance tool"</span>),
<a name="l00195"></a>00195 description, version, <span class="keyword">true</span>);
<a name="l00196"></a>00196
<a name="l00197"></a>00197 KCmdLineArgs::addCmdLineOptions( options );
<a name="l00198"></a>00198
<a name="l00199"></a>00199 KCmdLineArgs *args = KCmdLineArgs::parsedArgs();
<a name="l00200"></a>00200
<a name="l00201"></a>00201 <span class="keywordtype">bool</span> deleteAll = args->isSet(<span class="stringliteral">"clear-all"</span>);
<a name="l00202"></a>00202
<a name="l00203"></a>00203 KInstance ins( appName );
<a name="l00204"></a>00204
<a name="l00205"></a>00205 <span class="keywordflow">if</span> (!deleteAll)
<a name="l00206"></a>00206 {
<a name="l00207"></a>00207 DCOPClient *dcop = <span class="keyword">new</span> DCOPClient();
<a name="l00208"></a>00208 <a class="codeRef" href="qcstring.html">QCString</a> name = dcop->registerAs(appName, <span class="keyword">false</span>);
<a name="l00209"></a>00209 <span class="keywordflow">if</span> (!name.<a class="codeRef" href="qcstring.html#isEmpty">isEmpty</a>() && (name != appName))
<a name="l00210"></a>00210 {
<a name="l00211"></a>00211 fprintf(stderr, <span class="stringliteral">"%s: Already running! (%s)\n"</span>, appName, name.data());
<a name="l00212"></a>00212 <span class="keywordflow">return</span> 0;
<a name="l00213"></a>00213 }
<a name="l00214"></a>00214 }
<a name="l00215"></a>00215
<a name="l00216"></a>00216 currentDate = time(0);
<a name="l00217"></a>00217 m_maxCacheAge = KProtocolManager::maxCacheAge();
<a name="l00218"></a>00218 m_maxCacheSize = KProtocolManager::maxCacheSize();
<a name="l00219"></a>00219
<a name="l00220"></a>00220 <span class="keywordflow">if</span> (deleteAll)
<a name="l00221"></a>00221 m_maxCacheSize = -1;
<a name="l00222"></a>00222
<a name="l00223"></a>00223 <a class="codeRef" href="qstring.html">QString</a> strCacheDir = KGlobal::dirs()->saveLocation(<span class="stringliteral">"cache"</span>, <span class="stringliteral">"http"</span>);
<a name="l00224"></a>00224
<a name="l00225"></a>00225 <a class="codeRef" href="qdir.html">QDir</a> cacheDir( strCacheDir );
<a name="l00226"></a>00226 <span class="keywordflow">if</span> (!cacheDir.exists())
<a name="l00227"></a>00227 {
<a name="l00228"></a>00228 fprintf(stderr, <span class="stringliteral">"%s: '%s' does not exist.\n"</span>, appName, strCacheDir.<a class="codeRef" href="qstring.html#ascii">ascii</a>());
<a name="l00229"></a>00229 <span class="keywordflow">return</span> 0;
<a name="l00230"></a>00230 }
<a name="l00231"></a>00231
<a name="l00232"></a>00232 <a class="codeRef" href="qstringlist.html">QStringList</a> dirs = cacheDir.entryList( );
<a name="l00233"></a>00233
<a name="l00234"></a>00234 FileInfoList cachedEntries;
<a name="l00235"></a>00235
<a name="l00236"></a>00236 <span class="keywordflow">for</span>(QStringList::Iterator it = dirs.begin();
<a name="l00237"></a>00237 it != dirs.end();
<a name="l00238"></a>00238 it++)
<a name="l00239"></a>00239 {
<a name="l00240"></a>00240 <span class="keywordflow">if</span> ((*it)[0] != <span class="charliteral">'.'</span>)
<a name="l00241"></a>00241 {
<a name="l00242"></a>00242 scanDirectory( cachedEntries, *it, strCacheDir + <span class="stringliteral">"/"</span> + *it);
<a name="l00243"></a>00243 }
<a name="l00244"></a>00244 }
<a name="l00245"></a>00245
<a name="l00246"></a>00246 cachedEntries.sort();
<a name="l00247"></a>00247
<a name="l00248"></a>00248 <span class="keywordtype">int</span> maxCachedSize = m_maxCacheSize / 2;
<a name="l00249"></a>00249
<a name="l00250"></a>00250 <span class="keywordflow">for</span>(FileInfo *fileInfo = cachedEntries.first();
<a name="l00251"></a>00251 fileInfo;
<a name="l00252"></a>00252 fileInfo = cachedEntries.next())
<a name="l00253"></a>00253 {
<a name="l00254"></a>00254 <span class="keywordflow">if</span> (fileInfo->size > maxCachedSize)
<a name="l00255"></a>00255 {
<a name="l00256"></a>00256 <a class="codeRef" href="qcstring.html">QCString</a> filename = <a class="codeRef" href="qfile.html#encodeName">QFile::encodeName</a>( strCacheDir + <span class="stringliteral">"/"</span> + fileInfo->name);
<a name="l00257"></a>00257 unlink(filename.data());
<a name="l00258"></a>00258 <span class="comment">// kdDebug () << appName << ": Object too big, deleting '" << filename.data() << "' (" << result<< ")" << endl;</span>
<a name="l00259"></a>00259 }
<a name="l00260"></a>00260 }
<a name="l00261"></a>00261
<a name="l00262"></a>00262 <span class="keywordtype">int</span> totalSize = 0;
<a name="l00263"></a>00263
<a name="l00264"></a>00264 <span class="keywordflow">for</span>(FileInfo *fileInfo = cachedEntries.first();
<a name="l00265"></a>00265 fileInfo;
<a name="l00266"></a>00266 fileInfo = cachedEntries.next())
<a name="l00267"></a>00267 {
<a name="l00268"></a>00268 <span class="keywordflow">if</span> ((totalSize + fileInfo->size) > m_maxCacheSize)
<a name="l00269"></a>00269 {
<a name="l00270"></a>00270 <a class="codeRef" href="qcstring.html">QCString</a> filename = <a class="codeRef" href="qfile.html#encodeName">QFile::encodeName</a>( strCacheDir + <span class="stringliteral">"/"</span> + fileInfo->name);
<a name="l00271"></a>00271 unlink(filename.data());
<a name="l00272"></a>00272 <span class="comment">// kdDebug () << appName << ": Cache too big, deleting '" << filename.data() << "' (" << fileInfo->size << ")" << endl;</span>
<a name="l00273"></a>00273 }
<a name="l00274"></a>00274 <span class="keywordflow">else</span>
<a name="l00275"></a>00275 {
<a name="l00276"></a>00276 totalSize += fileInfo->size;
<a name="l00277"></a>00277 <span class="comment">// fprintf(stderr, "Keep in cache: %s %d %d total = %d\n", fileInfo->name.ascii(), fileInfo->size, fileInfo->age, totalSize);</span>
<a name="l00278"></a>00278 }
<a name="l00279"></a>00279 }
<a name="l00280"></a>00280 kdDebug () << appName << <span class="stringliteral">": Current size of cache = "</span> << totalSize << <span class="stringliteral">" kB."</span> << endl;
<a name="l00281"></a>00281 <span class="keywordflow">return</span> 0;
<a name="l00282"></a>00282 }
<a name="l00283"></a>00283
<a name="l00284"></a>00284
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