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<h1>favicons.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* This file is part of the KDE project</span>
<a name="l00002"></a>00002 <span class="comment"> Copyright (C) 2001 Malte Starostik <malte@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., 59 Temple Place - Suite 330,</span>
<a name="l00017"></a>00017 <span class="comment"> Boston, MA 02111-1307, 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 <string.h></span>
<a name="l00021"></a>00021 <span class="preprocessor">#include <time.h></span>
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="preprocessor">#include <qbuffer.h></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <qfile.h></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <qcache.h></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <qimage.h></span>
<a name="l00027"></a>00027 <span class="preprocessor">#include <qtimer.h></span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="preprocessor">#include <kdatastream.h></span> <span class="comment">// DO NOT REMOVE, otherwise bool marshalling breaks</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include <kicontheme.h></span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <kimageio.h></span>
<a name="l00032"></a>00032 <span class="preprocessor">#include <ksimpleconfig.h></span>
<a name="l00033"></a>00033 <span class="preprocessor">#include <kstandarddirs.h></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include <kio/job.h></span>
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="preprocessor">#include "favicons.moc"</span>
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="keyword">struct </span>FaviconsModulePrivate
<a name="l00039"></a>00039 {
<a name="l00040"></a>00040 <span class="keyword">virtual</span> ~FaviconsModulePrivate() { <span class="keyword">delete</span> config; }
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <span class="keyword">struct </span>DownloadInfo
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044 QString hostOrURL;
<a name="l00045"></a>00045 <span class="keywordtype">bool</span> isHost;
<a name="l00046"></a>00046 QByteArray iconData;
<a name="l00047"></a>00047 };
<a name="l00048"></a>00048 QMap<KIO::Job *, DownloadInfo> downloads;
<a name="l00049"></a>00049 QStringList failedDownloads;
<a name="l00050"></a>00050 KSimpleConfig *config;
<a name="l00051"></a>00051 QPtrList<KIO::Job> killJobs;
<a name="l00052"></a>00052 KIO::MetaData metaData;
<a name="l00053"></a>00053 QString faviconsDir;
<a name="l00054"></a>00054 QCache<QString> faviconsCache;
<a name="l00055"></a>00055 };
<a name="l00056"></a>00056
<a name="l00057"></a><a class="code" href="classFaviconsModule.html#a0">00057</a> <a class="code" href="classFaviconsModule.html#a0">FaviconsModule::FaviconsModule</a>(<span class="keyword">const</span> QCString &obj)
<a name="l00058"></a>00058 : KDEDModule(obj)
<a name="l00059"></a>00059 {
<a name="l00060"></a>00060 <span class="comment">// create our favicons folder so that KIconLoader knows about it</span>
<a name="l00061"></a>00061 d = <span class="keyword">new</span> FaviconsModulePrivate;
<a name="l00062"></a>00062 d->faviconsDir = KGlobal::dirs()->saveLocation( <span class="stringliteral">"cache"</span>, <span class="stringliteral">"favicons/"</span> );
<a name="l00063"></a>00063 d->faviconsDir.truncate(d->faviconsDir.length()-9); <span class="comment">// Strip off "favicons/"</span>
<a name="l00064"></a>00064 d->metaData.insert(<span class="stringliteral">"ssl_no_client_cert"</span>, <span class="stringliteral">"TRUE"</span>);
<a name="l00065"></a>00065 d->metaData.insert(<span class="stringliteral">"ssl_militant"</span>, <span class="stringliteral">"TRUE"</span>);
<a name="l00066"></a>00066 d->metaData.insert(<span class="stringliteral">"UseCache"</span>, <span class="stringliteral">"false"</span>);
<a name="l00067"></a>00067 d->metaData.insert(<span class="stringliteral">"cookies"</span>, <span class="stringliteral">"none"</span>);
<a name="l00068"></a>00068 d->metaData.insert(<span class="stringliteral">"no-auth"</span>, <span class="stringliteral">"true"</span>);
<a name="l00069"></a>00069 d->config = <span class="keyword">new</span> KSimpleConfig(locateLocal(<span class="stringliteral">"data"</span>, <span class="stringliteral">"konqueror/faviconrc"</span>));
<a name="l00070"></a>00070 d->killJobs.setAutoDelete(<span class="keyword">true</span>);
<a name="l00071"></a>00071 d->faviconsCache.setAutoDelete(<span class="keyword">true</span>);
<a name="l00072"></a>00072 }
<a name="l00073"></a>00073
<a name="l00074"></a><a class="code" href="classFaviconsModule.html#a1">00074</a> <a class="code" href="classFaviconsModule.html#a1">FaviconsModule::~FaviconsModule</a>()
<a name="l00075"></a>00075 {
<a name="l00076"></a>00076 <span class="keyword">delete</span> d;
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078
<a name="l00079"></a>00079 QString removeSlash(QString result)
<a name="l00080"></a>00080 {
<a name="l00081"></a>00081 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = result.length() - 1; i > 0; --i)
<a name="l00082"></a>00082 <span class="keywordflow">if</span> (result[i] != <span class="charliteral">'/'</span>)
<a name="l00083"></a>00083 {
<a name="l00084"></a>00084 result.truncate(i + 1);
<a name="l00085"></a>00085 <span class="keywordflow">break</span>;
<a name="l00086"></a>00086 }
<a name="l00087"></a>00087
<a name="l00088"></a>00088 <span class="keywordflow">return</span> result;
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090
<a name="l00091"></a>00091
<a name="l00092"></a><a class="code" href="classFaviconsModule.html#z0">00092</a> QString <a class="code" href="classFaviconsModule.html#z0">FaviconsModule::iconForURL</a>(<span class="keyword">const</span> KURL &url)
<a name="l00093"></a>00093 {
<a name="l00094"></a>00094 <span class="keywordflow">if</span> (url.host().isEmpty())
<a name="l00095"></a>00095 <span class="keywordflow">return</span> QString::null;
<a name="l00096"></a>00096
<a name="l00097"></a>00097 QString icon;
<a name="l00098"></a>00098 QString simplifiedURL = simplifyURL(url);
<a name="l00099"></a>00099
<a name="l00100"></a>00100 QString *iconURL = d->faviconsCache.find( removeSlash(simplifiedURL) );
<a name="l00101"></a>00101 <span class="keywordflow">if</span> (iconURL)
<a name="l00102"></a>00102 icon = *iconURL;
<a name="l00103"></a>00103 <span class="keywordflow">else</span>
<a name="l00104"></a>00104 icon = d->config->readEntry( removeSlash(simplifiedURL) );
<a name="l00105"></a>00105
<a name="l00106"></a>00106 <span class="keywordflow">if</span> (!icon.isEmpty())
<a name="l00107"></a>00107 icon = iconNameFromURL(KURL( icon ));
<a name="l00108"></a>00108 <span class="keywordflow">else</span>
<a name="l00109"></a>00109 icon = url.host();
<a name="l00110"></a>00110
<a name="l00111"></a>00111 icon = <span class="stringliteral">"favicons/"</span> + icon;
<a name="l00112"></a>00112
<a name="l00113"></a>00113 <span class="keywordflow">if</span> (QFile::exists(d->faviconsDir+icon+<span class="stringliteral">".png"</span>))
<a name="l00114"></a>00114 <span class="keywordflow">return</span> icon;
<a name="l00115"></a>00115
<a name="l00116"></a>00116 <span class="keywordflow">return</span> QString::null;
<a name="l00117"></a>00117 }
<a name="l00118"></a>00118
<a name="l00119"></a>00119 QString FaviconsModule::simplifyURL(<span class="keyword">const</span> KURL &url)
<a name="l00120"></a>00120 {
<a name="l00121"></a>00121 <span class="comment">// splat any = in the URL so it can be safely used as a config key</span>
<a name="l00122"></a>00122 QString result = url.host() + url.path();
<a name="l00123"></a>00123 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < result.length(); ++i)
<a name="l00124"></a>00124 <span class="keywordflow">if</span> (result[i] == <span class="charliteral">'='</span>)
<a name="l00125"></a>00125 result[i] = <span class="charliteral">'_'</span>;
<a name="l00126"></a>00126 <span class="keywordflow">return</span> result;
<a name="l00127"></a>00127 }
<a name="l00128"></a>00128
<a name="l00129"></a>00129 QString FaviconsModule::iconNameFromURL(<span class="keyword">const</span> KURL &iconURL)
<a name="l00130"></a>00130 {
<a name="l00131"></a>00131 <span class="keywordflow">if</span> (iconURL.path() == <span class="stringliteral">"/favicon.ico"</span>)
<a name="l00132"></a>00132 <span class="keywordflow">return</span> iconURL.host();
<a name="l00133"></a>00133
<a name="l00134"></a>00134 QString result = simplifyURL(iconURL);
<a name="l00135"></a>00135 <span class="comment">// splat / so it can be safely used as a file name</span>
<a name="l00136"></a>00136 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < result.length(); ++i)
<a name="l00137"></a>00137 <span class="keywordflow">if</span> (result[i] == <span class="charliteral">'/'</span>)
<a name="l00138"></a>00138 result[i] = <span class="charliteral">'_'</span>;
<a name="l00139"></a>00139
<a name="l00140"></a>00140 QString ext = result.right(4);
<a name="l00141"></a>00141 <span class="keywordflow">if</span> (ext == <span class="stringliteral">".ico"</span> || ext == <span class="stringliteral">".png"</span> || ext == <span class="stringliteral">".xpm"</span>)
<a name="l00142"></a>00142 result.remove(result.length() - 4, 4);
<a name="l00143"></a>00143
<a name="l00144"></a>00144 <span class="keywordflow">return</span> result;
<a name="l00145"></a>00145 }
<a name="l00146"></a>00146
<a name="l00147"></a>00147 <span class="keywordtype">bool</span> FaviconsModule::isIconOld(<span class="keyword">const</span> QString &icon)
<a name="l00148"></a>00148 {
<a name="l00149"></a>00149 <span class="keyword">struct </span>stat st;
<a name="l00150"></a>00150 <span class="keywordflow">if</span> (stat(QFile::encodeName(icon), &st) != 0)
<a name="l00151"></a>00151 <span class="keywordflow">return</span> <span class="keyword">true</span>; <span class="comment">// Trigger a new download on error</span>
<a name="l00152"></a>00152
<a name="l00153"></a>00153 <span class="keywordflow">return</span> (time(0) - st.st_mtime) > 604800; <span class="comment">// arbitrary value (one week)</span>
<a name="l00154"></a>00154 }
<a name="l00155"></a>00155
<a name="l00156"></a><a class="code" href="classFaviconsModule.html#z1">00156</a> <span class="keywordtype">void</span> <a class="code" href="classFaviconsModule.html#z1">FaviconsModule::setIconForURL</a>(<span class="keyword">const</span> KURL &url, <span class="keyword">const</span> KURL &iconURL)
<a name="l00157"></a>00157 {
<a name="l00158"></a>00158 QString simplifiedURL = simplifyURL(url);
<a name="l00159"></a>00159
<a name="l00160"></a>00160 d->faviconsCache.insert(removeSlash(simplifiedURL), <span class="keyword">new</span> QString(iconURL.url()) );
<a name="l00161"></a>00161
<a name="l00162"></a>00162 QString <a class="code" href="classFaviconsModule.html#o2">iconName</a> = <span class="stringliteral">"favicons/"</span> + iconNameFromURL(iconURL);
<a name="l00163"></a>00163 QString iconFile = d->faviconsDir + iconName + <span class="stringliteral">".png"</span>;
<a name="l00164"></a>00164
<a name="l00165"></a>00165 <span class="keywordflow">if</span> (!isIconOld(iconFile)) {
<a name="l00166"></a>00166 emit iconChanged(<span class="keyword">false</span>, simplifiedURL, iconName);
<a name="l00167"></a>00167 <span class="keywordflow">return</span>;
<a name="l00168"></a>00168 }
<a name="l00169"></a>00169
<a name="l00170"></a>00170 startDownload(simplifiedURL, <span class="keyword">false</span>, iconURL);
<a name="l00171"></a>00171 }
<a name="l00172"></a>00172
<a name="l00173"></a><a class="code" href="classFaviconsModule.html#z2">00173</a> <span class="keywordtype">void</span> <a class="code" href="classFaviconsModule.html#z2">FaviconsModule::downloadHostIcon</a>(<span class="keyword">const</span> KURL &url)
<a name="l00174"></a>00174 {
<a name="l00175"></a>00175 QString iconFile = d->faviconsDir + <span class="stringliteral">"favicons/"</span> + url.host() + <span class="stringliteral">".png"</span>;
<a name="l00176"></a>00176 <span class="keywordflow">if</span> (!isIconOld(iconFile))
<a name="l00177"></a>00177 <span class="keywordflow">return</span>;
<a name="l00178"></a>00178
<a name="l00179"></a>00179 startDownload(url.host(), <span class="keyword">true</span>, KURL(url, <span class="stringliteral">"/favicon.ico"</span>));
<a name="l00180"></a>00180 }
<a name="l00181"></a>00181
<a name="l00182"></a>00182 <span class="keywordtype">void</span> FaviconsModule::startDownload(<span class="keyword">const</span> QString &hostOrURL, <span class="keywordtype">bool</span> isHost, <span class="keyword">const</span> KURL &iconURL)
<a name="l00183"></a>00183 {
<a name="l00184"></a>00184 <span class="keywordflow">if</span> (d->failedDownloads.contains(iconURL.url()))
<a name="l00185"></a>00185 <span class="keywordflow">return</span>;
<a name="l00186"></a>00186
<a name="l00187"></a>00187 KIO::Job *job = KIO::get(iconURL, <span class="keyword">false</span>, <span class="keyword">false</span>);
<a name="l00188"></a>00188 job->addMetaData(d->metaData);
<a name="l00189"></a>00189 connect(job, SIGNAL(data(KIO::Job *, <span class="keyword">const</span> QByteArray &)), SLOT(slotData(KIO::Job *, <span class="keyword">const</span> QByteArray &)));
<a name="l00190"></a>00190 connect(job, SIGNAL(result(KIO::Job *)), SLOT(slotResult(KIO::Job *)));
<a name="l00191"></a>00191 connect(job, SIGNAL(<a class="code" href="classFaviconsModule.html#z3">infoMessage</a>(KIO::Job *, <span class="keyword">const</span> QString &)), SLOT(slotInfoMessage(KIO::Job *, <span class="keyword">const</span> QString &)));
<a name="l00192"></a>00192 FaviconsModulePrivate::DownloadInfo download;
<a name="l00193"></a>00193 download.hostOrURL = hostOrURL;
<a name="l00194"></a>00194 download.isHost = isHost;
<a name="l00195"></a>00195 d->downloads.insert(job, download);
<a name="l00196"></a>00196 }
<a name="l00197"></a>00197
<a name="l00198"></a>00198 <span class="keywordtype">void</span> FaviconsModule::slotData(KIO::Job *job, <span class="keyword">const</span> QByteArray &data)
<a name="l00199"></a>00199 {
<a name="l00200"></a>00200 FaviconsModulePrivate::DownloadInfo &download = d->downloads[job];
<a name="l00201"></a>00201 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> oldSize = download.iconData.size();
<a name="l00202"></a>00202 <span class="keywordflow">if</span> (oldSize > 0x10000)
<a name="l00203"></a>00203 {
<a name="l00204"></a>00204 d->killJobs.append(job);
<a name="l00205"></a>00205 QTimer::singleShot(0, <span class="keyword">this</span>, SLOT(slotKill()));
<a name="l00206"></a>00206 }
<a name="l00207"></a>00207 download.iconData.resize(oldSize + data.size());
<a name="l00208"></a>00208 memcpy(download.iconData.data() + oldSize, data.data(), data.size());
<a name="l00209"></a>00209 }
<a name="l00210"></a>00210
<a name="l00211"></a>00211 <span class="keywordtype">void</span> FaviconsModule::slotResult(KIO::Job *job)
<a name="l00212"></a>00212 {
<a name="l00213"></a>00213 FaviconsModulePrivate::DownloadInfo download = d->downloads[job];
<a name="l00214"></a>00214 d->downloads.remove(job);
<a name="l00215"></a>00215 KURL iconURL = static_cast<KIO::TransferJob *>(job)->url();
<a name="l00216"></a>00216 QString <a class="code" href="classFaviconsModule.html#o2">iconName</a>;
<a name="l00217"></a>00217 <span class="keywordflow">if</span> (!job->error())
<a name="l00218"></a>00218 {
<a name="l00219"></a>00219 QBuffer buffer(download.iconData);
<a name="l00220"></a>00220 buffer.open(IO_ReadOnly);
<a name="l00221"></a>00221 QImageIO io;
<a name="l00222"></a>00222 io.setIODevice(&buffer);
<a name="l00223"></a>00223 io.setParameters(<span class="stringliteral">"size=16"</span>);
<a name="l00224"></a>00224 <span class="comment">// Check here too, the job might have had no error, but the downloaded</span>
<a name="l00225"></a>00225 <span class="comment">// file contains just a 404 message sent with a 200 status.</span>
<a name="l00226"></a>00226 <span class="comment">// microsoft.com does that... (malte)</span>
<a name="l00227"></a>00227 <span class="keywordflow">if</span> (io.read())
<a name="l00228"></a>00228 {
<a name="l00229"></a>00229 <span class="comment">// Some sites have nasty 32x32 icons, according to the MS docs</span>
<a name="l00230"></a>00230 <span class="comment">// IE ignores them, well, we scale them, otherwise the location</span>
<a name="l00231"></a>00231 <span class="comment">// combo / menu will look quite ugly</span>
<a name="l00232"></a>00232 <span class="keywordflow">if</span> (io.image().width() != KIcon::SizeSmall || io.image().height() != KIcon::SizeSmall)
<a name="l00233"></a>00233 io.setImage(io.image().smoothScale(KIcon::SizeSmall, KIcon::SizeSmall));
<a name="l00234"></a>00234
<a name="l00235"></a>00235 <span class="keywordflow">if</span> (download.isHost)
<a name="l00236"></a>00236 iconName = download.hostOrURL;
<a name="l00237"></a>00237 <span class="keywordflow">else</span>
<a name="l00238"></a>00238 iconName = iconNameFromURL(iconURL);
<a name="l00239"></a>00239
<a name="l00240"></a>00240 iconName = <span class="stringliteral">"favicons/"</span> + iconName;
<a name="l00241"></a>00241
<a name="l00242"></a>00242 io.setIODevice(0);
<a name="l00243"></a>00243 io.setFileName(d->faviconsDir + iconName + <span class="stringliteral">".png"</span>);
<a name="l00244"></a>00244 io.setFormat(<span class="stringliteral">"PNG"</span>);
<a name="l00245"></a>00245 <span class="keywordflow">if</span> (!io.write())
<a name="l00246"></a>00246 iconName = QString::null;
<a name="l00247"></a>00247 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!download.isHost)
<a name="l00248"></a>00248 d->config->writeEntry( removeSlash(download.hostOrURL), iconURL.url());
<a name="l00249"></a>00249 }
<a name="l00250"></a>00250 }
<a name="l00251"></a>00251 <span class="keywordflow">if</span> (iconName.isEmpty())
<a name="l00252"></a>00252 d->failedDownloads.append(iconURL.url());
<a name="l00253"></a>00253
<a name="l00254"></a>00254 emit iconChanged(download.isHost, download.hostOrURL, iconName);
<a name="l00255"></a>00255 }
<a name="l00256"></a>00256
<a name="l00257"></a>00257 <span class="keywordtype">void</span> FaviconsModule::slotInfoMessage(KIO::Job *job, <span class="keyword">const</span> QString &msg)
<a name="l00258"></a>00258 {
<a name="l00259"></a>00259 emit <a class="code" href="classFaviconsModule.html#z3">infoMessage</a>(static_cast<KIO::TransferJob *>( job )->url(), msg);
<a name="l00260"></a>00260 }
<a name="l00261"></a>00261
<a name="l00262"></a>00262 <span class="keywordtype">void</span> FaviconsModule::slotKill()
<a name="l00263"></a>00263 {
<a name="l00264"></a>00264 d->killJobs.clear();
<a name="l00265"></a>00265 }
<a name="l00266"></a>00266
<a name="l00267"></a>00267 <span class="keyword">extern</span> <span class="stringliteral">"C"</span> {
<a name="l00268"></a>00268 KDE_EXPORT KDEDModule *create_favicons(<span class="keyword">const</span> QCString &obj)
<a name="l00269"></a>00269 {
<a name="l00270"></a>00270 KImageIO::registerFormats();
<a name="l00271"></a>00271 <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="classFaviconsModule.html">FaviconsModule</a>(obj);
<a name="l00272"></a>00272 }
<a name="l00273"></a>00273 }
<a name="l00274"></a>00274
<a name="l00275"></a>00275 <span class="comment">// vim: ts=4 sw=4 et</span>
</pre></div></div>
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