Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 284 insertions, 0 deletions

diff --git a/kioslave/http/http_cache_cleaner.cpp b/kioslave/http/http_cache_cleaner.cpp
new file mode 100644
index 000000000..f7406bcc1
--- /dev/null
+++ b/kioslave/http/http_cache_cleaner.cpp
@@ -0,0 +1,284 @@
+/*
+This file is part of KDE
+
+ Copyright (C) 1999-2000 Waldo Bastian (bastian@kde.org)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+//----------------------------------------------------------------------------
+//
+// KDE Http Cache cleanup tool
+// $Id$
+
+#include <time.h>
+#include <stdlib.h>
+
+#include <qdir.h>
+#include <qstring.h>
+#include <qptrlist.h>
+
+#include <kinstance.h>
+#include <klocale.h>
+#include <kcmdlineargs.h>
+#include <kglobal.h>
+#include <kstandarddirs.h>
+#include <dcopclient.h>
+#include <kprotocolmanager.h>
+
+#include <unistd.h>
+
+#include <kdebug.h>
+
+time_t currentDate;
+int m_maxCacheAge;
+int m_maxCacheSize;
+
+static const char appName[] = "kio_http_cache_cleaner";
+
+static const char description[] = I18N_NOOP("KDE HTTP cache maintenance tool");
+
+static const char version[] = "1.0.0";
+
+static const KCmdLineOptions options[] =
+{
+   {"clear-all", I18N_NOOP("Empty the cache"), 0},
+   KCmdLineLastOption
+};
+
+struct FileInfo {
+   QString name;
+   int size; // Size in Kb.
+   int age;
+};
+
+template class QPtrList<FileInfo>;
+
+class FileInfoList : public QPtrList<FileInfo>
+{
+public:
+   FileInfoList() : QPtrList<FileInfo>() { }
+   int compareItems(QPtrCollection::Item item1, QPtrCollection::Item item2)
+      { return ((FileInfo *)item1)->age - ((FileInfo *)item2)->age; }
+};
+
+// !START OF SYNC!
+// Keep the following in sync with the cache code in http.cc
+#define CACHE_REVISION "7\n"
+
+FileInfo *readEntry( const QString &filename)
+{
+   QCString CEF = QFile::encodeName(filename);
+   FILE *fs = fopen( CEF.data(), "r");
+   if (!fs)
+      return 0;
+
+   char buffer[401];
+   bool ok = true;
+
+  // CacheRevision
+  if (ok && (!fgets(buffer, 400, fs)))
+      ok = false;
+   if (ok && (strcmp(buffer, CACHE_REVISION) != 0))
+      ok = false;
+
+   // Full URL
+   if (ok && (!fgets(buffer, 400, fs)))
+      ok = false;
+
+   time_t creationDate;
+   int age =0;
+
+   // Creation Date
+   if (ok && (!fgets(buffer, 400, fs)))
+      ok = false;
+   if (ok)
+   {
+      creationDate = (time_t) strtoul(buffer, 0, 10);
+      age = (int) difftime(currentDate, creationDate);
+      if ( m_maxCacheAge && ( age > m_maxCacheAge))
+      {
+         ok = false; // Expired
+      }
+   }
+
+   // Expiration Date
+   if (ok && (!fgets(buffer, 400, fs)))
+      ok = false;
+   if (ok)
+   {
+//WABA: It seems I slightly misunderstood the meaning of "Expire:" header.
+#if 0
+      time_t expireDate;
+      expireDate = (time_t) strtoul(buffer, 0, 10);
+      if (expireDate && (expireDate < currentDate))
+         ok = false; // Expired
+#endif
+   }
+
+   // ETag
+   if (ok && (!fgets(buffer, 400, fs)))
+      ok = false;
+   if (ok)
+   {
+      // Ignore ETag
+   }
+
+   // Last-Modified
+   if (ok && (!fgets(buffer, 400, fs)))
+      ok = false;
+   if (ok)
+   {
+      // Ignore Last-Modified
+   }
+
+
+   fclose(fs);
+   if (ok)
+   {
+      FileInfo *info = new FileInfo;
+      info->age = age;
+      return info;
+   }
+
+   unlink( CEF.data());
+   return 0;
+}
+// Keep the above in sync with the cache code in http.cc
+// !END OF SYNC!
+
+void scanDirectory(FileInfoList &fileEntries, const QString &name, const QString &strDir)
+{
+   QDir dir(strDir);
+   if (!dir.exists()) return;
+
+   QFileInfoList *newEntries = (QFileInfoList *) dir.entryInfoList();
+
+   if (!newEntries) return; // Directory not accessible ??
+
+   for(QFileInfo *qFileInfo = newEntries->first();
+       qFileInfo;
+       qFileInfo = newEntries->next())
+   {
+       if (qFileInfo->isFile())
+       {
+          FileInfo *fileInfo = readEntry( strDir + "/" + qFileInfo->fileName());
+          if (fileInfo)
+          {
+             fileInfo->name = name + "/" + qFileInfo->fileName();
+             fileInfo->size = (qFileInfo->size() + 1023) / 1024;
+             fileEntries.append(fileInfo);
+          }
+       }
+   }
+}
+
+extern "C" KDE_EXPORT int kdemain(int argc, char **argv)
+{
+   KLocale::setMainCatalogue("kdelibs");
+   KCmdLineArgs::init( argc, argv, appName,
+		       I18N_NOOP("KDE HTTP cache maintenance tool"),
+		       description, version, true);
+
+   KCmdLineArgs::addCmdLineOptions( options );
+
+   KCmdLineArgs *args = KCmdLineArgs::parsedArgs();
+
+   bool deleteAll = args->isSet("clear-all");
+
+   KInstance ins( appName );
+
+   if (!deleteAll)
+   {
+      DCOPClient *dcop = new DCOPClient();
+      QCString name = dcop->registerAs(appName, false);
+      if (!name.isEmpty() && (name != appName))
+      {
+         fprintf(stderr, "%s: Already running! (%s)\n", appName, name.data());
+         return 0;
+      }
+   }
+
+   currentDate = time(0);
+   m_maxCacheAge = KProtocolManager::maxCacheAge();
+   m_maxCacheSize = KProtocolManager::maxCacheSize();
+
+   if (deleteAll)
+      m_maxCacheSize = -1;
+
+   QString strCacheDir = KGlobal::dirs()->saveLocation("cache", "http");
+
+   QDir cacheDir( strCacheDir );
+   if (!cacheDir.exists())
+   {
+      fprintf(stderr, "%s: '%s' does not exist.\n", appName, strCacheDir.ascii());
+      return 0;
+   }
+
+   QStringList dirs = cacheDir.entryList( );
+
+   FileInfoList cachedEntries;
+
+   for(QStringList::Iterator it = dirs.begin();
+       it != dirs.end();
+       it++)
+   {
+      if ((*it)[0] != '.')
+      {
+         scanDirectory( cachedEntries, *it, strCacheDir + "/" + *it);
+      }
+   }
+
+   cachedEntries.sort();
+
+   int maxCachedSize = m_maxCacheSize / 2;
+
+   for(FileInfo *fileInfo = cachedEntries.first();
+       fileInfo;
+       fileInfo = cachedEntries.next())
+   {
+      if (fileInfo->size > maxCachedSize)
+      {
+         QCString filename = QFile::encodeName( strCacheDir + "/" + fileInfo->name);
+         unlink(filename.data());
+//         kdDebug () << appName << ": Object too big, deleting '" << filename.data() << "' (" << result<< ")" << endl;
+      }
+   }
+
+   int totalSize = 0;
+
+   for(FileInfo *fileInfo = cachedEntries.first();
+       fileInfo;
+       fileInfo = cachedEntries.next())
+   {
+      if ((totalSize + fileInfo->size) > m_maxCacheSize)
+      {
+         QCString filename = QFile::encodeName( strCacheDir + "/" + fileInfo->name);
+         unlink(filename.data());
+//         kdDebug () << appName << ": Cache too big, deleting '" << filename.data() << "' (" << fileInfo->size << ")" << endl;
+      }
+      else
+      {
+         totalSize += fileInfo->size;
+// fprintf(stderr, "Keep in cache: %s %d %d total = %d\n", fileInfo->name.ascii(), fileInfo->size, fileInfo->age, totalSize);
+      }
+   }
+   kdDebug () << appName << ": Current size of cache = " << totalSize << " kB." << endl;
+   return 0;
+}
+
+