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//#define LOCAL_DEBUG
#include "debug.h"
#include "expiration.h"
#include "meta.h"
#include "filereader.h"
#include "fileio.h"
#include <fstream>
#include <unistd.h>
#include <dirent.h>
#include <map>
#include <string>
#include <iostream>
#include <algorithm>
using namespace std;
#define ENABLED
#ifndef ENABLED
#warning Unlinking parts defused
#endif
#define TIMEEXPIRED(t) (t < (m_gMaintTimeNow-acng::cfg::extreshhold*86400))
#define TIME_AGONY (m_gMaintTimeNow-acng::cfg::extreshhold*86400)
#define FNAME_PENDING "_expending_dat"
#define FNAME_DAMAGED "_expending_damaged"
#define sFAIL_INI SABSPATH("_exfail_cnt")
#define FAIL_INI sFAIL_INI.c_str()
namespace acng
{
// represents the session's current incomming data count at the moment when expr. was run last time
// it's needed to correct the considerations based on the active session's download stats
off_t lastCurrentDlCount(0);
void expiration::HandlePkgEntry(const tRemoteFileInfo &entry)
{
#ifdef DEBUGSPAM
LOGSTART2("expiration::HandlePkgEntry:",
"\ndir:" << entry.sDirectory << "\nname: " << entry.sFileName << "\nsize: " << entry.fpr.size << "\ncsum: " << entry.fpr.GetCsAsString());
#endif
#define ECLASS "<span class=\"ERROR\">ERROR: "
#define WCLASS "<span class=\"WARNING\">WARNING: "
#define GCLASS "<span class=\"GOOD\">OK: "
#define CLASSEND "</span><br>\n"
off_t lenFromHeader=-1;
// returns true if the file can be trashed, i.e. should stay in the list
auto DetectUncovered =
[&](cmstring& filenameHave, cmstring& sDirRel, tDiskFileInfo& descHave) -> bool
{
string sPathRel(sDirRel + filenameHave);
if(ContHas(m_forceKeepInTrash,sPathRel))
return true;
string sPathAbs(CACHE_BASE+sPathRel);
// end line ending starting from a class and add checkbox as needed
auto finish_bad = [&](cmstring& reason)->bool
{
if (m_damageList.is_open()) m_damageList << sPathRel << "\n";
SendChunk(" (treating as damaged file...) ");
AddDelCbox(sPathRel, reason);
SendChunk(CLASSEND);
return true;
};
#define ADDSPACE(x) SetFlags(m_processedIfile).space+=x
// finishes a line with span, not leading to invalidating
auto finish_good = [&](off_t size)->bool
{
SendFmt << CLASSEND;
ADDSPACE(size);
return false;
};
// like finish_good but prints the file, and only in verbose mode
auto report_good = [&](off_t size)->bool
{
// ok, package matched, contents ok if checked, drop it from the removal list
if (m_bVerbose) SendFmt << GCLASS << sPathRel << CLASSEND;
ADDSPACE(size);
return false;
};
// volatile files, not certain, print an action checkbox though
auto report_weird_volatile = [&](off_t size)->bool
{
if(m_bVerbose)
{
SendFmt << WCLASS << sPathRel << " (invalid but volatile, ignoring...) ";
AddDelCbox(sPathRel, "Bad file state while containing volatile index data");
SendChunk(CLASSEND);
}
ADDSPACE(size);
return false;
};
Cstat realState(SABSPATH(sPathRel));
if(!realState)
{
SendFmt << WCLASS "File not accessible, will remove metadata of " << sPathRel << CLASSEND;
m_forceKeepInTrash[sPathRel]=true;
return true;
}
auto lenFromStat = realState.st_size;
//SendFmt << "DBG-disk-size: " << lenFromStat;
// those file were not updated by index handling, and are most likely not
// matching their parent indexes. The best way is to see them as zero-sized and
// handle them the same way.
if(GetFlags(sPathRel).parseignore)
goto handle_incomplete;
// Basic header checks. Skip if the file was forcibly updated/reconstructed before.
if (m_bSkipHeaderChecks || descHave.bNoHeaderCheck)
{
// LOG("Skipped header check for " << sPathRel);
}
else if(entry.fpr.size>=0)
{
// LOG("Doing basic header checks");
header h;
auto sHeadAbs(sPathAbs+".head");
if (0<h.LoadFromFile(sHeadAbs))
{
lenFromHeader=atoofft(h.h[header::CONTENT_LENGTH], -2);
if(lenFromHeader<0)
{
// better drop it, properly downloaded ones DO have the length
SendFmt << WCLASS << sPathRel << ": " <<
"header file does not contain content length";
return finish_bad("header file does not contain content length");
}
if (lenFromHeader < lenFromStat)
{
ignore_value(::unlink(sHeadAbs.c_str()));
SendFmt << ECLASS "header file of " << sPathRel
<< " reported too small file size (" << lenFromHeader <<
" vs. " << lenFromStat
<< "); invalidating file, removing header now";
return finish_bad("metadata reports incorrect file size");
}
}
else
{
auto& at = GetFlags(sPathRel);
if(!at.parseignore && !at.forgiveDlErrors) // just warn
{
SendFmt<< WCLASS "header file missing or damaged for "
<<sPathRel << CLASSEND;
}
}
}
if(m_bByPath)
{
// can check a bit more against directory info for most cases
// also shortcut without scanning
if(entry.fpr.size>=0)
{
if(lenFromStat > entry.fpr.size) goto report_oversize;
if(lenFromStat < entry.fpr.size) goto handle_incomplete;
}
}
if(!m_bByChecksum) return report_good(lenFromStat);
//knowing the expected and real size, try a shortcut without scanning
if(entry.fpr.size >= 0)
{
if(lenFromStat<0) lenFromStat=GetFileSize(sPathAbs, -123);
if(lenFromStat >=0 && lenFromStat < entry.fpr.size)
{
// descHave.fpr.size=lenFromStat;
goto handle_incomplete;
}
}
if(entry.fpr.csType != descHave.fpr.csType &&
!descHave.fpr.ScanFile(sPathAbs, entry.fpr.csType))
{
// IO error? better keep it for now, not sure how to deal with it
SendFmt << ECLASS "An error occurred while checksumming "
<< sPathRel << ", leaving as-is for now.";
log::err(tSS() << "Error reading " << sPathAbs );
AddDelCbox(sPathRel, "IO error");
SendFmt<<CLASSEND;
return false;
}
// ok, now fingerprint data must be consistent
if(!descHave.fpr.csEquals(entry.fpr))
{
SendFmt << ECLASS << "checksum mismatch on " << sPathRel;
return finish_bad("checksum mismatch");
}
// good, or cannot check so must be good
if(entry.fpr.size<0 || (descHave.fpr.size == entry.fpr.size))
return report_good(lenFromStat);
// like the check above but this time we might compare also the uncompressed size
// which is relevant for some types of vfiles
if(descHave.fpr.size > entry.fpr.size)
{
report_oversize:
/*
*
*
ERROR: size mismatch on debrep/dists/jessie/contrib/i18n/Translation-en.bz2 (adding to damage list)Tag
repro: check by path, after a minor distro upgrade
*/
// don't really care but let the user truncate
if(rex::GetFiletype(sPathRel) == rex::FILE_VOLATILE)
return report_weird_volatile(lenFromStat);
SendFmt << ECLASS << "size mismatch on " << sPathRel;
return finish_bad("checksum mismatch");
}
// all remaining cases mean an incomplete download
handle_incomplete:
if (!m_bIncompleteIsDamaged)
{
if(m_bVerbose)
{
SendFmt << WCLASS << sPathRel
<< " (incomplete download, ignoring...) ";
AddDelCbox(sPathRel, "Incomplete download");
return finish_good(lenFromStat);
}
// just continue silently
return report_good(lenFromStat);
}
// ok... considering damaged...
if (m_bTruncateDamaged)
{
if(lenFromStat >0)
{
ignore_value(::truncate(sPathAbs.c_str(), 0));
SendFmt << WCLASS << " incomplete download, truncating (as requested): "
<< sPathRel;
return finish_good(0);
}
// otherwise be quiet and don't care
return false;
}
SendFmt << ECLASS << " incomplete download, invalidating (as requested) "<< sPathRel;
return finish_bad("incomplete download");
};
auto rangeIt = m_trashFile2dir2Info.find(entry.sFileName);
if (rangeIt == m_trashFile2dir2Info.end())
return;
auto loopFunc =
[&](map<mstring,tDiskFileInfo>::iterator& it)
{
if (DetectUncovered(rangeIt->first, it->first, it->second))
it++;
else
rangeIt->second.erase(it++);
};
// needs to match the exact file location if requested.
// And for "Index" files, they have always to be at a well defined location, this
// constraint is also needed to expire deprecated files
// and in general, all kinds of index files shall be checked at the particular location since
// there are too many identical names spread between different repositories
bool byPath = (m_bByPath || entry.sFileName == sIndex ||
rex::Match(entry.sDirectory + entry.sFileName, rex::FILE_VOLATILE));
if(byPath)
{
// compare full paths (physical vs. remote) with their real paths
auto cleanPath(entry.sDirectory);
pathTidy(cleanPath);
auto itEntry = rangeIt->second.find(cleanPath);
if(itEntry == rangeIt->second.end()) // not found, ignore
return;
loopFunc(itEntry);
}
else for(auto it = rangeIt->second.begin(); it != rangeIt->second.end();)
loopFunc(it);
}
// this method looks for the validity of additional package files kept in cache after
// the Debian version moved to a higher one. Still a very simple algorithm and may not work
// as expected when there are multiple Debian/Blends/Ubuntu/GRML/... branches inside with lots
// of gaps in the "package history" when proceeded in linear fashion.
inline void expiration::DropExceptionalVersions()
{
if(m_trashFile2dir2Info.empty() || !cfg::keepnver)
return;
if(system("dpkg --version >/dev/null 2>&1"))
{
SendFmt << "dpkg not available on this system, cannot identify latest versions to keep "
"only " << cfg::keepnver << " of them.";
return;
}
struct tPkgId
{
mstring prevName, ver, prevArcSufx;
map<mstring,tDiskFileInfo>* group;
~tPkgId() {group=0;};
inline bool Set(cmstring& fileName, decltype(group) newgroup)
{
group = newgroup;
tSplitWalk split(&fileName, "_");
if(!split.Next())
return false;
prevName=split;
if(!split.Next())
return false;
ver=split;
for (const char *p = prevArcSufx.c_str(); *p; ++p)
if (!isalnum(uint(*p)) && !strchr(".-+:~", uint(*p)))
return false;
if(!split.Next())
return false;
prevArcSufx=split;
return !split.Next(); // no trailing crap there
}
inline bool SamePkg(tPkgId &other) const
{
return other.prevName == prevName && other.prevArcSufx == prevArcSufx;
}
// move highest versions to beginning
inline bool operator<(const tPkgId &other) const
{
int r=::system((string("dpkg --compare-versions ")+ver+" gt "+other.ver).c_str());
return 0==r;
}
};
vector<tPkgId> version2trashGroup;
auto procGroup = [&]()
{
// if more than allowed, keep the highest versions for sure, others are expired as usual
if(version2trashGroup.size() > (uint) cfg::keepnver)
std::sort(version2trashGroup.begin(), version2trashGroup.end());
for(unsigned i=0; i<version2trashGroup.size() && i<uint(cfg::keepnver); i++)
for(auto& j: * version2trashGroup[i].group)
j.second.nLostAt=m_gMaintTimeNow;
version2trashGroup.clear();
};
for(auto& trashFile2Group : m_trashFile2dir2Info)
{
if(!endsWithSzAr(trashFile2Group.first, ".deb"))
continue;
tPkgId newkey;
if(!newkey.Set(trashFile2Group.first, &trashFile2Group.second))
continue;
if(!version2trashGroup.empty() && !newkey.SamePkg(version2trashGroup.back()))
procGroup();
version2trashGroup.emplace_back(newkey);
}
if(!version2trashGroup.empty())
procGroup();
}
inline void expiration::RemoveAndStoreStatus(bool bPurgeNow)
{
LOGSTART("expiration::_RemoveAndStoreStatus");
FILE_RAII f;
if(!bPurgeNow)
{
DropExceptionalVersions();
string sDbFileAbs=CACHE_BASE+FNAME_PENDING;
f.p = fopen(sDbFileAbs.c_str(), "w");
if(!f)
{
SendChunk(WITHLEN("Unable to open " FNAME_PENDING
" for writing, attempting to recreate... "));
::unlink(sDbFileAbs.c_str());
f.p=::fopen(sDbFileAbs.c_str(), "w");
if(f)
SendChunk(WITHLEN("OK\n<br>\n"));
else
{
SendChunk(WITHLEN(
"<span class=\"ERROR\">"
"FAILED. ABORTING. Check filesystem and file permissions."
"</span>"));
return;
}
}
}
int nCount(0);
off_t tagSpace(0);
for (auto& fileGroup : m_trashFile2dir2Info)
{
for (auto& dir_props : fileGroup.second)
{
string sPathRel = dir_props.first + fileGroup.first;
auto& desc = dir_props.second;
DBGQLOG("Checking " << sPathRel);
using namespace rex;
if (ContHas(m_forceKeepInTrash, sPathRel))
{
LOG("forcetrash flag set, whitelist does not apply, shall be removed");
}
else if (Match(fileGroup.first, FILE_WHITELIST) || Match(sPathRel, FILE_WHITELIST))
{
// exception is stuff that should have some cover but doesn't
if(!ContHas(m_managedDirs, dir_props.first))
{
LOG("Protected file, not to be removed");
continue;
}
}
if (dir_props.second.nLostAt<=0) // heh, accidentally added?
continue;
//cout << "Unreferenced: " << it->second.sDirname << it->first <<endl;
string sPathAbs = SABSPATH(sPathRel);
if (bPurgeNow || TIMEEXPIRED(dir_props.second.nLostAt))
{
#ifdef ENABLED
SendFmt << "Removing " << sPathRel;
if(::unlink(sPathAbs.c_str()))
SendChunk(tErrnoFmter("<span class=\"ERROR\"> [ERROR] ")+"</span>");
SendFmt << sBRLF << "Removing " << sPathRel << ".head";
if(::unlink((sPathAbs + ".head").c_str()))
SendChunk(tErrnoFmter("<span class=\"ERROR\"> [ERROR] ")+"</span>");
SendChunk(sBRLF);
::rmdir(SZABSPATH(dir_props.first));
#endif
}
else if (f)
{
SendFmt << "Tagging " << sPathRel;
if (m_bVerbose)
SendFmt << " (t-" << (m_gMaintTimeNow - desc.nLostAt) / 3600 << "h)";
SendChunk(sBRLF);
nCount++;
tagSpace += desc.fpr.size;
fprintf(f, "%lu\t%s\t%s\n",
(unsigned long) desc.nLostAt,
dir_props.first.c_str(),
fileGroup.first.c_str());
}
}
}
if(nCount)
TellCount(nCount, tagSpace);
}
void expiration::Action()
{
if (m_parms.type==workExPurge)
{
LoadPreviousData(true);
RemoveAndStoreStatus(true);
return;
}
if (m_parms.type==workExList)
{
ListExpiredFiles();
return;
}
if(m_parms.type==workExPurgeDamaged || m_parms.type==workExListDamaged || m_parms.type==workExTruncDamaged)
{
HandleDamagedFiles();
return;
}
bool tradeOffCheck = cfg::exstarttradeoff && !StrHas(m_parms.cmd, "ignoreTradeOff") && !m_bByChecksum;
off_t newLastIncommingOffset = 0;
if(tradeOffCheck)
{
newLastIncommingOffset = log::GetCurrentCountersInOut().first;
auto haveIncomming = newLastIncommingOffset - lastCurrentDlCount
+ log::GetOldCountersInOut(true).first;
if(haveIncomming < cfg::exstarttradeoff)
{
SendFmt << "Expiration suppressed due to costs-vs.-benefit considerations "
"(see exStartTradeOff setting, " << offttosH(haveIncomming) <<
" vs. " << offttosH(cfg::exstarttradeoff)
<< " (<a href=\"" << this->m_parms.cmd << "&ignoreTradeOff=iTO\">Override this check now</a>)"
<< sBRLF;
return;
}
}
m_bIncompleteIsDamaged=StrHas(m_parms.cmd, "incomAsDamaged");
m_bScanVolatileContents=StrHas(m_parms.cmd, "scanVolatile");
SendChunk("<b>Locating potentially expired files in the cache...</b><br>\n");
BuildCacheFileList();
if(CheckStopSignal())
goto save_fail_count;
SendFmt<<"Found "<<m_nProgIdx<<" files.<br />\n";
#if 0 //def DEBUG
for(auto& i: m_trashFile2dir2Info)
{
SendFmt << "<br>File: " << i.first <<sBRLF;
for(auto& j: i.second)
SendFmt << "Dir: " << j.first << " [ "<<j.second.fpr.size << " / " << j.second.nLostAt << " ]<br>\n";
}
#endif
/* if(m_bByChecksum)
m_fprCache.rehash(1.25*m_trashFile2dir2Info.size());
*/
//cout << "found package files: " << m_trashCandidates.size()<<endl;
//for(tS2DAT::iterator it=m_trashCandSet.begin(); it!=m_trashCandSet.end(); it++)
// SendChunk(tSS()<<it->second.sDirname << "~~~" << it->first << " : " << it->second.fpr.size<<"<br>");
LoadHints();
UpdateVolatileFiles();
if(CheckAndReportError() || CheckStopSignal())
goto save_fail_count;
m_damageList.open(SZABSPATH(FNAME_DAMAGED), ios::out | ios::trunc);
SendChunk(WITHLEN("<b>Validating cache contents...</b><br>\n"));
// by-hash stuff needs special handling...
for(const auto& sPathRel : GetGoodReleaseFiles())
{
auto func = [this](const tRemoteFileInfo &e) {
auto hexname(BytesToHexString(e.fpr.csum, GetCSTypeLen(e.fpr.csType)));
auto hit = m_trashFile2dir2Info.find(hexname);
if(hit == m_trashFile2dir2Info.end())
return; // unknown
if(!m_bByPath)
{
m_trashFile2dir2Info.erase(hit);
return;
}
auto sdir = e.sDirectory + "by-hash/" + GetCsNameReleaseFile(e.fpr.csType) + '/';
hit->second.erase(sdir);
};
ParseAndProcessMetaFile(func, sPathRel, EIDX_RELEASE, true);
}
ProcessSeenIndexFiles([this](const tRemoteFileInfo &e) {
HandlePkgEntry(e); });
if(CheckAndReportError() || CheckStopSignal())
goto save_fail_count;
// update timestamps of pending removals
LoadPreviousData(false);
SendChunk(WITHLEN("<b>Reviewing candidates for removal...</b><br>\n"));
RemoveAndStoreStatus(StrHas(m_parms.cmd, "purgeNow"));
PurgeMaintLogs();
DelTree(CACHE_BASE+"_actmp");
TrimFiles();
PrintStats("Allocated disk space");
SendChunk("<br>Done.<br>");
if(tradeOffCheck)
{
lastCurrentDlCount = newLastIncommingOffset;
log::ResetOldCounters();
}
save_fail_count:
if (m_nErrorCount <= 0)
{
::unlink(FAIL_INI);
}
else
{
FILE *f = fopen(FAIL_INI, "a");
if (!f)
{
SendFmt << "Unable to open " <<
sFAIL_INI << " for writing, attempting to recreate... ";
::unlink(FAIL_INI);
f = ::fopen(FAIL_INI, "w");
if (f)
SendChunk(WITHLEN("OK\n<br>\n"));
else
{
SendChunk(WITHLEN("<span class=\"ERROR\">FAILED. ABORTING. "
"Check filesystem and file permissions.</span>"));
}
}
if (f)
{
::fprintf(f, "%lu\n", (long unsigned int) GetTime());
checkForceFclose(f);
}
}
}
void expiration::ListExpiredFiles()
{
LoadPreviousData(true);
off_t nSpace(0);
unsigned cnt(0);
for (auto& i : this->m_trashFile2dir2Info)
{
for (auto& j : i.second)
{
auto rel = (j.first + i.first);
auto abspath = SABSPATH(rel);
off_t sz = GetFileSize(abspath, -2);
if (sz < 0)
continue;
cnt++;
this->SendChunk(rel + sBRLF);
nSpace += sz;
sz = GetFileSize(abspath + ".head", -2);
if (sz >= 0)
{
nSpace += sz;
this->SendChunk(rel + ".head<br>\n");
}
}
}
this->TellCount(cnt, nSpace);
mstring delURL(this->m_parms.cmd);
StrSubst(delURL, "justShow", "justRemove");
SendFmtRemote << "<a href=\""<<delURL<<"\">Delete all listed files</a> "
"(no further confirmation)<br>\n";
return;
}
void expiration::TrimFiles()
{
if(m_oversizedFiles.empty())
return;
auto now=GetTime();
SendFmt << "<b>Trimming cache files (" << m_oversizedFiles.size() <<")</b>" << sBRLF;
for(const auto& fil: m_oversizedFiles)
{
// still there and not changed?
Cstat stinfo(fil);
if(!stinfo)
continue;
if(now - 86400 > stinfo.st_mtim.tv_sec)
{
// SendFmt << "let's truncate " << fil << " to " << stinfo.st_size << "<br>";
// it's unlikely to be accessed but better protect it
fileItemMgmt item;
item.PrepareRegisteredFileItemWithStorage(fil, true);
if(!item)
continue;
lockguard g(item.m_ptr.get());
off_t nix;
if(item.m_ptr->GetStatusUnlocked(nix) >= fileitem::FIST_DLGOTHEAD)
continue;
if(0 != truncate(fil.c_str(), stinfo.st_size))
SendFmt << "Error at " << fil << " (" << tErrnoFmter() << ")" << sBRLF;
}
}
}
void expiration::HandleDamagedFiles()
{
filereader f;
if(!f.OpenFile(SABSPATH(FNAME_DAMAGED)))
{
this->SendChunk(WITHLEN("List of damaged files not found"));
return;
}
mstring s;
while(f.GetOneLine(s))
{
if(s.empty())
continue;
if(this->m_parms.type == workExPurgeDamaged)
{
SendFmt << "Removing " << s << sBRLF;
unlink(SZABSPATH(s));
unlink(SZABSPATH(s+".head"));
}
else if(this->m_parms.type == workExTruncDamaged)
{
SendFmt << "Truncating " << s << sBRLF;
ignore_value(truncate(SZABSPATH(s), 0));
}
else
SendFmt << s << sBRLF;
}
return;
}
void expiration::PurgeMaintLogs()
{
tStrDeq logs = ExpandFilePattern(cfg::logdir + SZPATHSEP MAINT_PFX "*.log*");
if (logs.size() > 2)
SendChunk(WITHLEN(
"Found required cleanup tasks: purging maintenance logs...<br>\n"));
for (const auto &s: logs)
{
time_t id = atoofft(s.c_str() + cfg::logdir.size() + 7);
//cerr << "id ist: "<< id<<endl;
if (id == GetTaskId())
continue;
//cerr << "Remove: "<<globbuf.gl_pathv[i]<<endl;
#ifdef ENABLED
::unlink(s.c_str());
#endif
}
if(!m_killBill.empty())
{
SendChunk(WITHLEN("Removing deprecated files...<br>\n"));
for(const auto &s: m_killBill)
{
SendChunk(s+sBRLF);
::unlink(SZABSPATH(s));
}
}
}
bool expiration::ProcessRegular(const string & sPathAbs, const struct stat &stinfo)
{
if(CheckStopSignal())
return false;
if(sPathAbs.size()<=CACHE_BASE_LEN) // heh?
return false;
ProgTell();
auto diffMoreThan = [&stinfo](blkcnt_t diff){
return stinfo.st_blocks > diff && stinfo.st_size/512 < (stinfo.st_blocks - diff);
};
// detect invisible holes at the end of files (side effect of properly incorrect hidden allocation)
// allow some tolerance of about 10kb, should cover all page alignment effects
if(diffMoreThan(20))
{
auto now=GetTime();
if(now - 86400 > stinfo.st_mtim.tv_sec)
{
m_oversizedFiles.emplace_back(sPathAbs);
// don't spam unless the user wants it and the size is really large
if(m_bVerbose || diffMoreThan(40))
{
SendFmt << "Trailing allocated space on " << sPathAbs << " (" << stinfo.st_blocks <<
" blocks, expected: ~" << (stinfo.st_size/512 + 1) <<"), will be trimmed later<br>";
}
}
}
string sPathRel(sPathAbs, CACHE_BASE_LEN);
DBGQLOG(sPathRel);
// detect strings which are only useful for shell or js attacks
if(sPathRel.find_first_of("\r\n'\"<>{}")!=stmiss)
return true;
if(sPathRel[0] == '_' && !m_bScanInternals)
return true; // not for us
// special handling for the installer files, we need an index for them which might be not there
tStrPos pos2, pos = sPathRel.rfind("/installer-");
if(pos!=stmiss && stmiss !=(pos2=sPathRel.find("/images/", pos)))
{
auto idir = sPathRel.substr(0, pos2 + 8);
auto& flags = m_metaFilesRel[idir +"SHA256SUMS"];
/* pretend that it's there but not usable so the refreshing code will try to get at
* least one copy for that location if it's needed there
*/
if(!flags.vfile_ondisk)
{
flags.eIdxType = EIDX_SHA256DILIST;
flags.vfile_ondisk = true;
flags.uptodate = false;
// the original source context will probably provide a viable source for
// this URL - it might go 404 if the whole folder is missing but then the
// referenced content would also be outdated/gone and not worth keeping
// in the cache anyway
flags.forgiveDlErrors = true;
}
// and last but not least - care only about the modern version of that index
m_metaFilesRel.erase(idir + "MD5SUMS");
}
unsigned stripLen=0;
if (endsWithSzAr(sPathRel, ".head"))
stripLen=5;
else if (AddIFileCandidate(sPathRel))
{
auto &attr = SetFlags(sPathRel);
attr.space += stinfo.st_size;
attr.forgiveDlErrors = endsWith(sPathRel, sslIndex);
}
else if (rex::Match(sPathRel, rex::FILE_VOLATILE))
return true; // cannot check volatile files properly so don't care
// ok, split to dir/file and add to the list
tStrPos nCutPos = sPathRel.rfind(CPATHSEP);
nCutPos = (nCutPos == stmiss) ? 0 : nCutPos+1;
auto& finfo = m_trashFile2dir2Info[sPathRel.substr(nCutPos, sPathRel.length() - stripLen - nCutPos)]
[sPathRel.substr(0, nCutPos)];
finfo.nLostAt = m_gMaintTimeNow;
// remember the size for content data, ignore for the header file
if(!stripLen)
finfo.fpr.size = stinfo.st_size;
return true;
}
void expiration::LoadHints()
{
filereader reader;
if(!reader.OpenFile(cfg::confdir+SZPATHSEP+"ignore_list"))
{
if(cfg::suppdir.empty() || !reader.OpenFile(cfg::suppdir+SZPATHSEP+"ignore_list"))
return;
}
string sTmp;
while (reader.GetOneLine(sTmp))
{
trimLine(sTmp);
if (startsWithSz(sTmp, "#"))
continue;
if(startsWith(sTmp, CACHE_BASE))
sTmp.erase(CACHE_BASE_LEN);
if(sTmp.empty())
continue;
SetFlags(sTmp).forgiveDlErrors=true;
}
reader.Close();
reader.OpenFile(sFAIL_INI);
while(reader.GetOneLine(sTmp))
m_nPrevFailCount += (atol(sTmp.c_str())>0);
}
void expiration::LoadPreviousData(bool bForceInsert)
{
filereader reader;
reader.OpenFile(SABSPATH(FNAME_PENDING));
string sLine;
while(reader.GetOneLine(sLine))
{
char *eptr(nullptr);
auto s = sLine.c_str();
time_t timestamp = strtoull(s, &eptr, 10);
if (!eptr || *eptr != '\t' || !timestamp || timestamp > m_gMaintTimeNow) // where is the DeLorean?
continue;
auto sep = strchr(++eptr, (unsigned) '\t');
if (!sep)
continue;
string dir(eptr, sep - eptr);
if (!dir.empty() && '/' != *(sep - 1))
dir += "/";
auto term = strchr(++sep, (unsigned) '\t'); // just to be sure
if (term)
continue;
auto& desc = m_trashFile2dir2Info[sep][dir];
// maybe add with timestamp from the last century (implies removal later)
if(bForceInsert)
desc.nLostAt=1;
// considered file was already considered garbage, use the old date
else if(desc.nLostAt>0)
desc.nLostAt = timestamp;
}
#if 0
/*
cout << "Unreferenced: ";
for(trashmap_t::iterator it=m_trashCandidates.begin(); it!=m_trashCandidates.end(); it++)
fprintf(stdout, "%lu\t%s\t%s\n", it->second.first, it->second.second.c_str(), it->first.c_str());
*/
if(m_trashCandidates.size()>0)
{
// pretty printing for impatient users
char buf[200];
// map to to wait
int nMax=cfg::extreshhold-((now-oldest)/86400);
int nMin=cfg::extreshhold-((now-newest)/86400);
snprintf(buf, _countof(buf), "Previously detected: %lu rotten package file(s), "
"to be deleted in about %d-%d day(s)<br>\n",
(unsigned long) m_trashCandidates.size(),
nMin, nMax==nMin?nMax+1:nMax); // cheat a bit for the sake of code simplicity
SendChunk(buf);
}
#endif
}
inline bool expiration::CheckAndReportError()
{
if (m_nErrorCount > 0 && m_bErrAbort)
{
SendFmt << sAbortMsg;
if(m_nPrevFailCount+(m_nErrorCount>0) > cfg::exsupcount)
SendFmt << "\n<!--\n" maark << int(ControLineType::Error) << "Errors found, aborting expiration...\n-->\n";
return true;
}
return false;
}
void expiration::MarkObsolete(cmstring& sPathRel)
{
m_killBill.emplace_back(sPathRel);
}
bool expiration::_checkSolidHashOnDisk(cmstring& hexname, const tRemoteFileInfo& entry,
cmstring& srcPrefix)
{
if(m_trashFile2dir2Info.find(hexname) == m_trashFile2dir2Info.end())
return false;
return cacheman::_checkSolidHashOnDisk(hexname, entry, srcPrefix);
}
bool expiration::_QuickCheckSolidFileOnDisk(cmstring& sPathRel)
{
auto dir=GetDirPart(sPathRel);
auto nam=sPathRel.substr(dir.size());
auto it = m_trashFile2dir2Info.find(nam);
if(it == m_trashFile2dir2Info.end())
return false;
return it->second.find(dir) != it->second.end();
}
}
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