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added an optional cache for hashes, so that hashed files are remembered for some days.

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git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@3729 b45a01b8-16f6-495d-af2f-9b41ad6348cc
This commit is contained in:
csoler 2010-10-31 20:35:31 +00:00
parent 5cc222d251
commit 630156a5e8
11 changed files with 493 additions and 45 deletions
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208
libretroshare/src/dbase/fimonitor.cc
View File

@ -43,6 +43,7 @@
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <fstream>
//***********
//#define FIM_DEBUG 1
@ -51,12 +52,198 @@
FileIndexMonitor::FileIndexMonitor(CacheStrapper *cs, NotifyBase *cb_in,std::string cachedir, std::string pid)
:CacheSource(RS_SERVICE_TYPE_FILE_INDEX, false, cs, cachedir), fi(pid),
pendingDirs(false), pendingForceCacheWrite(false),
mForceCheck(false), mInCheck(false),cb(cb_in)
mForceCheck(false), mInCheck(false),cb(cb_in), hashCache(cachedir+"/" + "fc-own-cache.rsfa"),useHashCache(true)
{
updatePeriod = 60;
}
bool FileIndexMonitor::rememberHashFiles()
{
RsStackMutex mtx(fiMutex) ; /* LOCKED DIRS */
return useHashCache ;
}
void FileIndexMonitor::setRememberHashFiles(bool b)
{
RsStackMutex mtx(fiMutex) ; /* LOCKED DIRS */
#ifdef FIM_DEBUG
std::cerr << "Setting useHashCache to " << b << std::endl;
#endif
useHashCache = b ;
}
void FileIndexMonitor::setRememberHashFilesDuration(uint32_t days)
{
RsStackMutex mtx(fiMutex) ; /* LOCKED DIRS */
#ifdef FIM_DEBUG
std::cerr << "Setting HashCache duration to " << days << std::endl;
#endif
hashCache.setRememberHashFilesDuration(days) ;
hashCache.clean() ;
}
uint32_t FileIndexMonitor::rememberHashFilesDuration() const
{
RsStackMutex mtx(fiMutex) ; /* LOCKED DIRS */
return hashCache.rememberHashFilesDuration() ;
}
// Remove any memory of formerly hashed files that are not shared anymore
void FileIndexMonitor::clearHashFiles()
{
RsStackMutex mtx(fiMutex) ; /* LOCKED DIRS */
hashCache.clear() ;
hashCache.save() ;
}
HashCache::HashCache(const std::string& path)
: _path(path)
{
_max_cache_duration_days = 10 ; // 10 days is the default value.
_files.clear() ;
_changed = false ;
std::ifstream f(_path.c_str()) ;
std::streamsize max_line_size = 2000 ; // should be enough. Anyway, if we
// miss one entry, we just lose some
// cache itemsn but this is not too
// much of a problem.
char *buff = new char[max_line_size] ;
#ifdef FIM_DEBUG
std::cerr << "Loading HashCache from file " << path << std::endl ;
int n=0 ;
#endif
while(f.good())
{
HashCacheInfo info ;
f.getline(buff,max_line_size,'\n') ;
std::string name(buff) ;
f.getline(buff,max_line_size,'\n') ; if(sscanf(buff,"%lld",&info.size) != 1) break ;
f.getline(buff,max_line_size,'\n') ; if(sscanf(buff,"%ld",&info.time_stamp) != 1) break ;
f.getline(buff,max_line_size,'\n') ; if(sscanf(buff,"%ld",&info.modf_stamp) != 1) break ;
f.getline(buff,max_line_size,'\n') ; info.hash = std::string(buff) ;
#ifdef FIM_DEBUG
std::cerr << " (" << name << ", " << info.size << ", " << info.time_stamp << ", " << info.modf_stamp << ", " << info.hash << std::endl ;
++n ;
#endif
_files[name] = info ;
}
f.close() ;
delete[] buff ;
#ifdef FIM_DEBUG
std::cerr << n << " entries loaded." << std::endl ;
#endif
}
void HashCache::save()
{
if(_changed)
{
#ifdef FIM_DEBUG
std::cerr << "Saving Hash Cache to file " << _path << "..." << std::endl ;
#endif
std::ofstream f( (_path+".tmp").c_str() ) ;
for(std::map<std::string,HashCacheInfo>::const_iterator it(_files.begin());it!=_files.end();++it)
{
f << it->first << std::endl ;
f << it->second.size << std::endl;
f << it->second.time_stamp << std::endl;
f << it->second.modf_stamp << std::endl;
f << it->second.hash << std::endl;
}
f.close() ;
RsDirUtil::renameFile(_path+".tmp",_path) ;
#ifdef FIM_DEBUG
std::cerr << "done." << std::endl ;
#endif
_changed = false ;
}
#ifdef FIM_DEBUG
else
std::cerr << "Hash cache not changed. Not saving." << std::endl ;
#endif
}
bool HashCache::find(const std::string& full_path,uint64_t size,time_t time_stamp,std::string& hash)
{
#ifdef FIM_DEBUG
std::cerr << "HashCache: looking for " << full_path << std::endl ;
#endif
time_t now = time(NULL) ;
std::map<std::string,HashCacheInfo>::iterator it(_files.find(full_path)) ;
if(it != _files.end() && time_stamp == it->second.modf_stamp && size == it->second.size)
{
hash = it->second.hash ;
it->second.time_stamp = now ;
#ifdef FIM_DEBUG
std::cerr << "Found in cache." << std::endl ;
#endif
return true ;
}
else
{
#ifdef FIM_DEBUG
std::cerr << "not found in cache." << std::endl ;
#endif
return false ;
}
}
void HashCache::insert(const std::string& full_path,uint64_t size,time_t time_stamp,const std::string& hash)
{
HashCacheInfo info ;
info.size = size ;
info.modf_stamp = time_stamp ;
info.time_stamp = time(NULL) ;
info.hash = hash ;
_files[full_path] = info ;
_changed = true ;
#ifdef FIM_DEBUG
std::cerr << "Entry inserted in cache: " << full_path << ", " << size << ", " << time_stamp << std::endl ;
#endif
}
void HashCache::clean()
{
#ifdef FIM_DEBUG
std::cerr << "Cleaning HashCache..." << std::endl ;
#endif
time_t now = time(NULL) ;
time_t duration = _max_cache_duration_days * 24 * 3600 ; // seconds
#ifdef FIM_DEBUG
std::cerr << "cleaning hash cache." << std::endl ;
#endif
for(std::map<std::string,HashCacheInfo>::iterator it(_files.begin());it!=_files.end();)
if(it->second.time_stamp + duration < now)
{
#ifdef FIM_DEBUG
std::cerr << " Entry too old: " << it->first << ", ts=" << it->second.time_stamp << std::endl ;
#endif
std::map<std::string,HashCacheInfo>::iterator tmp(it) ;
++tmp ;
_files.erase(it) ;
it=tmp ;
}
else
++it ;
#ifdef FIM_DEBUG
std::cerr << "Done." << std::endl;
#endif
}
FileIndexMonitor::~FileIndexMonitor()
{
@ -535,7 +722,7 @@ void FileIndexMonitor::updateCycle()
olddir = NULL;
/* close directory */
dirIt.closedir();
dirIt.closedir();
}
// Now, hash all files at once.
@ -574,6 +761,9 @@ void FileIndexMonitor::updateCycle()
fi.updateMaxModTime() ; // Update modification times for proper display.
mInCheck = false;
if(useHashCache)
hashCache.save() ;
}
}
@ -638,8 +828,13 @@ void FileIndexMonitor::hashFiles(const std::vector<DirContentToHash>& to_hash)
cb->notifyHashingInfo(NOTIFY_HASHTYPE_HASH_FILE, tmpout.str()) ;
FileEntry fe(to_hash[i].fentries[j]) ; // copied, because hashFile updates the hash member
std::string real_path(to_hash[i].realpath + "/" + to_hash[i].fentries[j].name) ;
if(RsDirUtil::hashFile(to_hash[i].realpath + "/" + to_hash[i].fentries[j].name, fe.hash))
// 1st look into the hash cache if this file already exists.
//
if(useHashCache && hashCache.find(real_path,to_hash[i].fentries[j].size,to_hash[i].fentries[j].modtime,fe.hash))
fi.updateFileEntry(to_hash[i].dirpath,fe,stamp);
else if(RsDirUtil::hashFile(real_path, fe.hash)) // not found, then hash it.
{
RsStackMutex stack(fiMutex); /**** LOCKED DIRS ****/
@ -647,6 +842,10 @@ void FileIndexMonitor::hashFiles(const std::vector<DirContentToHash>& to_hash)
/* update with new time */
fi.updateFileEntry(to_hash[i].dirpath,fe,stamp);
// Update the hash cache
if(useHashCache)
hashCache.insert(real_path,to_hash[i].fentries[j].size,to_hash[i].fentries[j].modtime,fe.hash) ;
}
else
std::cerr << "Failed to Hash File " << to_hash[i].fentries[j].name << std::endl;
@ -675,6 +874,9 @@ void FileIndexMonitor::hashFiles(const std::vector<DirContentToHash>& to_hash)
RsStackMutex stack(fiMutex); /**** LOCKED DIRS ****/
FileIndexMonitor::locked_saveFileIndexes() ;
last_save_size = size ;
if(useHashCache)
hashCache.save() ;
}
}

41
libretroshare/src/dbase/fimonitor.h
View File

@ -71,6 +71,34 @@ class DirContentToHash
std::string dirpath ;
};
class HashCache
{
public:
HashCache(const std::string& save_file_name) ;
void save() ;
void insert(const std::string& full_path,uint64_t size,time_t time_stamp,const std::string& hash) ;
bool find(const std::string& full_path,uint64_t size,time_t time_stamp,std::string& hash) ;
void clean() ;
typedef struct
{
uint64_t size ;
time_t time_stamp ;
time_t modf_stamp ;
std::string hash ;
} HashCacheInfo ;
void setRememberHashFilesDuration(uint32_t days) { _max_cache_duration_days = days ; }
uint32_t rememberHashFilesDuration() const { return _max_cache_duration_days ; }
void clear() { _files.clear(); }
private:
uint32_t _max_cache_duration_days ; // maximum duration of un-requested cache entries
std::map<std::string, HashCacheInfo> _files ;
std::string _path ;
bool _changed ;
};
/******************************************************************************************
* FileIndexMonitor
*****************************************************************************************/
@ -119,6 +147,16 @@ class FileIndexMonitor: public CacheSource, public RsThread
/* util fns */
protected:
// Sets/gets the duration period within which already hashed files are remembered.
//
void setRememberHashFilesDuration(uint32_t days) ;
uint32_t rememberHashFilesDuration() const ;
void setRememberHashFiles(bool) ;
bool rememberHashFiles() ;
// Remove any memory of formerly hashed files that are not shared anymore
void clearHashFiles() ;
private:
/* the mutex should be locked before calling these 3. */
@ -154,6 +192,9 @@ class FileIndexMonitor: public CacheSource, public RsThread
bool internal_setSharedDirectories();
NotifyBase *cb ;
HashCache hashCache ;
bool useHashCache ;
};

75
libretroshare/src/ft/ftdbase.cc
View File

@ -161,6 +161,29 @@ bool ftFiMonitor::search(const std::string &hash, uint32_t hintflags, FileInfo &
return false;
};
void ftFiMonitor::setRememberHashCacheDuration(uint32_t days)
{
setRememberHashFilesDuration(days) ; // calls FileIndexMonitor
IndicateConfigChanged() ;
}
uint32_t ftFiMonitor::rememberHashCacheDuration() const
{
return rememberHashFilesDuration() ; // calls FileIndexMonitor
}
void ftFiMonitor::setRememberHashCache(bool b)
{
setRememberHashFiles(b) ; // calls FileIndexMonitor
IndicateConfigChanged() ;
}
bool ftFiMonitor::rememberHashCache()
{
return rememberHashFiles() ; // calls FileIndexMonitor
}
void ftFiMonitor::clearHashCache()
{
clearHashFiles() ;
}
/******* LOAD / SAVE CONFIG List.
*
*
@ -174,9 +197,14 @@ RsSerialiser *ftFiMonitor::setupSerialiser()
/* add in the types we need! */
rss->addSerialType(new RsFileConfigSerialiser());
rss->addSerialType(new RsGeneralConfigSerialiser());
return rss;
}
const std::string hash_cache_duration_ss("HASH_CACHE_DURATION");
const std::string hash_cache_ss("HASH_CACHE");
std::list<RsItem *> ftFiMonitor::saveList(bool &cleanup)
{
std::list<RsItem *> sList;
@ -204,6 +232,30 @@ std::list<RsItem *> ftFiMonitor::saveList(bool &cleanup)
sList.push_back(fi);
}
std::map<std::string, std::string> configMap;
/* basic control parameters */
std::ostringstream s ;
s << rememberHashFilesDuration() ;
configMap[hash_cache_duration_ss] = s.str() ;
configMap[hash_cache_ss] = rememberHashFiles()?"YES":"NO" ;
RsConfigKeyValueSet *rskv = new RsConfigKeyValueSet();
/* Convert to TLV */
for(std::map<std::string,std::string>::const_iterator mit = configMap.begin(); mit != configMap.end(); mit++)
{
RsTlvKeyValue kv;
kv.key = mit->first;
kv.value = mit->second;
rskv->tlvkvs.pairs.push_back(kv);
}
/* Add KeyValue to saveList */
sList.push_back(rskv);
return sList;
}
@ -224,6 +276,29 @@ bool ftFiMonitor::loadList(std::list<RsItem *> load)
std::list<RsItem *>::iterator it;
for(it = load.begin(); it != load.end(); it++)
{
RsConfigKeyValueSet *rskv ;
/* switch on type */
if (NULL != (rskv = dynamic_cast<RsConfigKeyValueSet *>(*it)))
{
/* make into map */
std::map<std::string, std::string> configMap;
std::map<std::string, std::string>::const_iterator mit ;
for(std::list<RsTlvKeyValue>::const_iterator kit = rskv->tlvkvs.pairs.begin(); kit != rskv->tlvkvs.pairs.end(); kit++)
{
configMap[kit->key] = kit->value;
}
if (configMap.end() != (mit = configMap.find(hash_cache_duration_ss)))
{
uint32_t t=0 ;
if(sscanf(mit->second.c_str(),"%d",&t) == 1)
setRememberHashFilesDuration(t);
}
if(configMap.end() != (mit = configMap.find(hash_cache_ss)))
setRememberHashFiles( mit->second == "YES") ;
}
RsFileConfigItem *fi = dynamic_cast<RsFileConfigItem *>(*it);
if (!fi)
{

6
libretroshare/src/ft/ftdbase.h
View File

@ -66,6 +66,12 @@ class ftFiMonitor: public FileIndexMonitor, public ftSearch, public p3Config
virtual void setSharedDirectories(const std::list<SharedDirInfo>& dirList);
virtual void updateShareFlags(const SharedDirInfo& info) ;
void setRememberHashCacheDuration(uint32_t days) ;
uint32_t rememberHashCacheDuration() const ;
void setRememberHashCache(bool) ;
bool rememberHashCache() ;
void clearHashCache() ;
/***
* Configuration - store shared directories
*/

35
libretroshare/src/ft/ftserver.cc
View File

@ -83,10 +83,6 @@ void ftServer::setConfigDirectory(std::string path)
RsDirUtil::checkCreateDirectory(basecachedir) ;
RsDirUtil::checkCreateDirectory(localcachedir) ;
RsDirUtil::checkCreateDirectory(remotecachedir) ;
//mFiStore -> setCacheDir(remotecachedir);
//mFiMon -> setCacheDir(localcachedir);
}
void ftServer::setP3Interface(P3Interface *pqi)
@ -151,8 +147,6 @@ void ftServer::SetupFtServer(NotifyBase *cb)
mConnMgr->addMonitor(mFtController);
mConnMgr->addMonitor(mCacheStrapper);
// mFtDwlQueue = new ftDwlQueue(mFtController);
return;
}
@ -184,9 +178,6 @@ void ftServer::StartupThreads()
/* Dataplex */
mFtDataplex->start();
// /* Download Queue */
// mFtDwlQueue->start();
/* start own thread */
start();
}
@ -376,11 +367,6 @@ bool ftServer::clearDownload(const std::string hash)
return true ;
}
//void ftServer::getDwlDetails(std::list<DwlDetails> & details)
//{
// mFtDwlQueue->getDwlDetails(details);
//}
bool ftServer::FileDownloadChunksDetails(const std::string& hash,FileChunksInfo& info)
{
return mFtController->getFileDownloadChunksDetails(hash,info);
@ -660,6 +646,26 @@ bool ftServer::removeSharedDirectory(std::string dir)
return true;
}
void ftServer::setRememberHashFiles(bool b)
{
mFiMon->setRememberHashCache(b) ;
}
bool ftServer::rememberHashFiles() const
{
return mFiMon->rememberHashCache() ;
}
void ftServer::setRememberHashFilesDuration(uint32_t days)
{
mFiMon->setRememberHashCacheDuration(days) ;
}
uint32_t ftServer::rememberHashFilesDuration() const
{
return mFiMon->rememberHashCacheDuration() ;
}
void ftServer::clearHashCache()
{
mFiMon->clearHashCache() ;
}
void ftServer::setShareDownloadDirectory(bool value)
{
@ -1250,7 +1256,6 @@ bool ftServer::addConfiguration(p3ConfigMgr *cfgmgr)
cfgmgr->addConfiguration("ft_shared.cfg", mFiMon);
cfgmgr->addConfiguration("ft_extra.cfg", mFtExtra);
cfgmgr->addConfiguration("ft_transfers.cfg", mFtController);
// cfgmgr->addConfiguration("ft_dwlqueue.cfg", mFtDwlQueue);
return true;
}

6
libretroshare/src/ft/ftserver.h
View File

@ -202,6 +202,12 @@ virtual bool getShareDownloadDirectory();
virtual bool shareDownloadDirectory();
virtual bool unshareDownloadDirectory();
virtual void setRememberHashFilesDuration(uint32_t days) ;
virtual uint32_t rememberHashFilesDuration() const ;
virtual bool rememberHashFiles() const ;
virtual void setRememberHashFiles(bool) ;
virtual void clearHashCache() ;
/***************************************************************/
/*************** Control Interface *****************************/
/***************************************************************/

5
libretroshare/src/retroshare/rsfiles.h
View File

@ -184,6 +184,11 @@ class RsFiles
virtual bool addSharedDirectory(const SharedDirInfo& dir) = 0;
virtual bool updateShareFlags(const SharedDirInfo& dir) = 0; // updates the flags. The directory should already exist !
virtual bool removeSharedDirectory(std::string dir) = 0;
virtual void setRememberHashFilesDuration(uint32_t days) = 0 ;
virtual uint32_t rememberHashFilesDuration() const = 0 ;
virtual void clearHashCache() = 0 ;
virtual bool rememberHashFiles() const =0;
virtual void setRememberHashFiles(bool) =0;
virtual void setShareDownloadDirectory(bool value) = 0;
virtual bool getShareDownloadDirectory() = 0;

1
retroshare-gui/src/gui/SharedFilesDialog.h
View File

@ -115,7 +115,6 @@ private:
QAction* sendchatlinkAct;
QAction* copylinklocalhtmlAct;
QTreeView *shareddirtreeview;
/** Qt Designer generated object */
Ui::SharedFilesDialog ui;

44
retroshare-gui/src/gui/settings/DirectoriesPage.cpp
View File

@ -21,6 +21,7 @@
#include "DirectoriesPage.h"
#include "gui/ShareManager.h"
#include <QMessageBox>
#include "rshare.h"
#include <retroshare/rsfiles.h>
@ -52,10 +53,19 @@ DirectoriesPage::DirectoriesPage(QWidget * parent, Qt::WFlags flags)
ui.checkBox->setChecked(false); /* signal not emitted */
}
uint32_t t = rsFiles->rememberHashFilesDuration() ;
bool b = rsFiles->rememberHashFiles() ;
ui.rememberHashesSB->setValue(t) ;
ui.rememberHashesCB->setChecked(b) ;
connect(ui.incomingButton, SIGNAL(clicked( bool ) ), this , SLOT( setIncomingDirectory() ) );
connect(ui.partialButton, SIGNAL(clicked( bool ) ), this , SLOT( setPartialsDirectory() ) );
connect(ui.checkBox, SIGNAL(stateChanged(int)), this, SLOT(shareDownloadDirectory(int)));
connect(ui.editButton, SIGNAL(clicked()), this, SLOT(editDirectories()));
connect(ui.cleanHashCachePB, SIGNAL(clicked()), this, SLOT(clearHashCache()));
connect(ui.rememberHashesCB, SIGNAL(toggled(bool)), this, SLOT(toggleRememberHashes(bool)));
connect(ui.rememberHashesSB, SIGNAL(valueChanged(int)), this, SLOT(setRememberHashesDuration(int)));
/* Hide platform specific features */
#ifdef Q_WS_WIN
@ -63,6 +73,40 @@ DirectoriesPage::DirectoriesPage(QWidget * parent, Qt::WFlags flags)
#endif
}
void DirectoriesPage::setRememberHashesDuration(int d)
{
rsFiles->setRememberHashFilesDuration(d) ;
}
void DirectoriesPage::toggleRememberHashes(bool b)
{
if(!b)
{
if(QMessageBox::question(NULL,"Cache cleaning confirmation","The will forget any former hash of non shared files. Do you confirm ?") == QMessageBox::Ok)
{
rsFiles->clearHashCache() ;
rsFiles->setRememberHashFiles(b) ;
ui.rememberHashesSB->setEnabled(false) ;
ui.cleanHashCachePB->setEnabled(false) ;
}
else
ui.rememberHashesCB->setChecked(true) ;
}
else
{
rsFiles->setRememberHashFiles(true) ;
ui.rememberHashesSB->setEnabled(true) ;
ui.cleanHashCachePB->setEnabled(true) ;
}
}
void DirectoriesPage::clearHashCache()
{
if(QMessageBox::question(NULL,"Cache cleaning confirmation","The will forget any former hash of non shared files. Do you confirm ?", QMessageBox::Ok | QMessageBox::Cancel) == QMessageBox::Ok)
rsFiles->clearHashCache() ;
}
void
DirectoriesPage::closeEvent (QCloseEvent * event)
{

8
retroshare-gui/src/gui/settings/DirectoriesPage.h
View File

@ -42,15 +42,13 @@ class DirectoriesPage: public ConfigPage
private slots:
#ifdef TO_REMOVE
void addShareDirectory();
void removeShareDirectory();
#endif
void editDirectories() ;
void setIncomingDirectory();
void setPartialsDirectory();
void shareDownloadDirectory(int state);
void clearHashCache() ;
void setRememberHashesDuration(int) ;
void toggleRememberHashes(bool) ;
private:

109
retroshare-gui/src/gui/settings/DirectoriesPage.ui
View File

@ -6,7 +6,7 @@
<rect>
<x>0</x>
<y>0</y>
<width>477</width>
<width>483</width>
<height>439</height>
</rect>
</property>
@ -604,29 +604,96 @@
<property name="title">
<string>Shared Directories</string>
</property>
<layout class="QGridLayout" name="gridLayout">
<item row="0" column="0" colspan="2">
<layout class="QVBoxLayout" name="verticalLayout">
<item>
<widget class="QListWidget" name="dirList"/>
</item>
<item row="1" column="0">
<widget class="QCheckBox" name="checkBox">
<property name="enabled">
<bool>true</bool>
</property>
<property name="text">
<string>Automatically share incoming directory (Recommended)</string>
</property>
<property name="checked">
<bool>true</bool>
</property>
</widget>
<item>
<layout class="QHBoxLayout" name="horizontalLayout_2">
<item>
<widget class="QCheckBox" name="checkBox">
<property name="enabled">
<bool>true</bool>
</property>
<property name="text">
<string>Automatically share incoming directory (Recommended)</string>
</property>
<property name="checked">
<bool>true</bool>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="editButton">
<property name="text">
<string>Edit Share</string>
</property>
</widget>
</item>
</layout>
</item>
<item row="1" column="1">
<widget class="QPushButton" name="editButton">
<property name="text">
<string>Edit Share</string>
</property>
</widget>
<item>
<layout class="QHBoxLayout" name="horizontalLayout">
<item>
<widget class="QCheckBox" name="rememberHashesCB">
<property name="toolTip">
<string>&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
&lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot; /&gt;&lt;style type=&quot;text/css&quot;&gt;
p, li { white-space: pre-wrap; }
&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'Sans'; font-size:10pt; font-weight:400; font-style:normal;&quot;&gt;
&lt;p align=&quot;justify&quot; style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;Remember file hashes even if not shared. &lt;/p&gt;
&lt;p align=&quot;justify&quot; style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;This might be useful if you're sharing an &lt;/p&gt;
&lt;p align=&quot;justify&quot; style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;external HD, to avoid re-hashing files when &lt;/p&gt;
&lt;p align=&quot;justify&quot; style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;you plug it in.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
</property>
<property name="text">
<string>Remember hashed files for </string>
</property>
<property name="checked">
<bool>true</bool>
</property>
</widget>
</item>
<item>
<widget class="QSpinBox" name="rememberHashesSB">
<property name="suffix">
<string> days</string>
</property>
<property name="minimum">
<number>1</number>
</property>
<property name="maximum">
<number>365</number>
</property>
<property name="value">
<number>10</number>
</property>
</widget>
</item>
<item>
<spacer name="horizontalSpacer">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>40</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
<item>
<widget class="QPushButton" name="cleanHashCachePB">
<property name="toolTip">
<string>Forget any hashed file that is not anymore shared.</string>
</property>
<property name="text">
<string>Clean Hash Cache</string>
</property>
</widget>
</item>
</layout>
</item>
</layout>
</widget>