bool FileSystem::LoadFileIntoBuffer(const char* filename, CharBuffer& buffer, bool addTrailingNull)
{
DiskFile file;
if (!file.Open(filename, DiskFile::omRead))
{
return false;
}
// obtain file size.
file.Seek(0, DiskFile::soEnd);
int size = (int)file.Position();
file.Seek(0);
// allocate memory to contain the whole file.
buffer.Reserve(size + (addTrailingNull ? 1 : 0));
// copy the file into the buffer.
file.Read(buffer, size);
file.Close();
if (addTrailingNull)
{
buffer[size] = 0;
}
return true;
}
bool RarVolume::Read()
{
debug("Checking file %s", *m_filename);
DiskFile file;
if (!file.Open(m_filename, DiskFile::omRead))
{
return false;
}
m_version = DetectRarVersion(file);
file.Seek(0);
bool ok = false;
switch (m_version)
{
case 3:
ok = ReadRar3Volume(file);
break;
case 5:
ok = ReadRar5Volume(file);
break;
}
file.Close();
DecryptFree();
LogDebugInfo();
return ok;
}
void NntpProcessor::SendSegment()
{
detail("[%i] Sending segment %s (%i=%lli:%i)", m_id, *m_filename, m_part, (long long)m_offset, m_size);
if (m_speed > 0)
{
m_start = Util::GetCurrentTicks();
}
BString<1024> fullFilename("%s/%s", m_dataDir, *m_filename);
BString<1024> cacheFileDir("%s/%s", m_cacheDir, *m_filename);
BString<1024> cacheFileName("%i=%lli-%i", m_part, (long long)m_offset, m_size);
BString<1024> cacheFullFilename("%s/%s", *cacheFileDir, *cacheFileName);
BString<1024> cacheKey("%s/%s", *m_filename, *cacheFileName);
const char* cachedData = nullptr;
int cachedSize;
if (m_cache)
{
m_cache->Find(cacheKey, cachedData, cachedSize);
}
DiskFile cacheFile;
bool readCache = !cachedData && m_cacheDir && cacheFile.Open(cacheFullFilename, DiskFile::omRead);
bool writeCache = !cachedData && m_cacheDir && !readCache;
StringBuilder cacheMem;
if (m_cache && !cachedData)
{
cacheMem.Reserve((int)(m_size * 1.1));
}
CString errmsg;
if (writeCache && !FileSystem::ForceDirectories(cacheFileDir, errmsg))
{
error("Could not create directory %s: %s", *cacheFileDir, *errmsg);
}
if (writeCache && !cacheFile.Open(cacheFullFilename, DiskFile::omWrite))
{
error("Could not create file %s: %s", *cacheFullFilename, *FileSystem::GetLastErrorMessage());
}
if (!cachedData && !readCache && !FileSystem::FileExists(fullFilename))
{
m_connection->WriteLine(CString::FormatStr("430 Article not found\r\n"));
return;
}
YEncoder encoder(fullFilename, m_part, m_offset, m_size,
[proc = this, writeCache, &cacheFile, &cacheMem](const char* buf, int size)
{
if (proc->m_cache)
{
cacheMem.Append(buf);
}
if (writeCache)
{
cacheFile.Write(buf, size);
}
proc->SendData(buf, size);
});
if (!cachedData && !readCache && !encoder.OpenFile(errmsg))
{
m_connection->WriteLine(CString::FormatStr("403 %s\r\n", *errmsg));
return;
}
m_connection->WriteLine(CString::FormatStr("%i, 0 %s\r\n", m_sendHeaders ? 222 : 220, m_messageid));
if (m_sendHeaders)
{
m_connection->WriteLine(CString::FormatStr("Message-ID: %s\r\n", m_messageid));
m_connection->WriteLine(CString::FormatStr("Subject: \"%s\"\r\n", FileSystem::BaseFileName(m_filename)));
m_connection->WriteLine("\r\n");
}
if (cachedData)
{
SendData(cachedData, cachedSize);
}
else if (readCache)
{
cacheFile.Seek(0, DiskFile::soEnd);
int size = (int)cacheFile.Position();
CharBuffer buf(size);
cacheFile.Seek(0);
if (cacheFile.Read((char*)buf, size) != size)
{
error("Could not read file %s: %s", *cacheFullFilename, *FileSystem::GetLastErrorMessage());
}
if (m_cache)
{
cacheMem.Append(buf, size);
}
SendData(buf, size);
}
else
{
encoder.WriteSegment();
}
if (!cachedData && cacheMem.Length() > 0)
{
m_cache->Append(cacheKey, cacheMem, cacheMem.Length());
}
m_connection->WriteLine(".\r\n");
}
bool RarVolume::ReadRar5Volume(DiskFile& file)
{
debug("Reading rar5-file %s", *m_filename);
file.Seek(8);
while (!file.Eof())
{
RarBlock block = ReadRar5Block(file);
if (!block.type)
{
return false;
}
if (block.type == RAR5_BLOCK_MAIN)
{
uint64 arcflags;
if (!ReadV(file, &block, &arcflags)) return false;
if (arcflags & RAR5_MAIN_VOLNR)
{
uint64 volnr;
if (!ReadV(file, &block, &volnr)) return false;
m_volumeNo = (uint32)volnr;
}
m_newNaming = true;
m_multiVolume = (arcflags & RAR5_MAIN_ISVOL) != 0;
}
else if (block.type == RAR5_BLOCK_ENCRYPTION)
{
uint64 val;
if (!ReadV(file, &block, &val)) return false;
if (val != 0) return false; // supporting only AES
if (!ReadV(file, &block, &val)) return false;
uint8 kdfCount;
uint8 salt[16];
if (!Read(file, &block, &kdfCount, sizeof(kdfCount))) return false;
if (!Read(file, &block, &salt, sizeof(salt))) return false;
m_encrypted = true;
if (m_password.Empty()) return false;
if (!DecryptRar5Prepare(kdfCount, salt)) return false;
}
else if (block.type == RAR5_BLOCK_FILE)
{
RarFile innerFile;
if (!ReadRar5File(file, block, innerFile)) return false;
m_files.push_back(std::move(innerFile));
}
else if (block.type == RAR5_BLOCK_ENDARC)
{
uint64 endflags;
if (!ReadV(file, &block, &endflags)) return false;
m_hasNextVolume = (endflags & RAR5_ENDARC_NEXTVOL) != 0;
break;
}
else if (block.type < 1 || block.type > 5)
{
// inlvaid block type
return false;
}
uint64 skip = block.trailsize;
if (m_encrypted)
{
skip -= 16 - m_decryptPos;
if (m_decryptPos < 16)
{
skip += skip % 16 > 0 ? 16 - skip % 16 : 0;
m_decryptPos = 16;
}
DecryptFree();
}
if (!file.Seek(skip, DiskFile::soCur))
{
return false;
}
}
return true;
}
bool RarVolume::ReadRar3Volume(DiskFile& file)
{
debug("Reading rar3-file %s", *m_filename);
while (!file.Eof())
{
RarBlock block = ReadRar3Block(file);
if (!block.type)
{
return false;
}
if (block.type == RAR3_BLOCK_MAIN)
{
if (block.flags & RAR3_MAIN_PASSWORD)
{
m_encrypted = true;
if (m_password.Empty()) return false;
}
m_newNaming = block.flags & RAR3_MAIN_NEWNUMBERING;
m_multiVolume = block.flags & RAR3_MAIN_VOLUME;
}
else if (block.type == RAR3_BLOCK_FILE)
{
RarFile innerFile;
if (!ReadRar3File(file, block, innerFile)) return false;
m_files.push_back(std::move(innerFile));
}
else if (block.type == RAR3_BLOCK_ENDARC)
{
if (block.flags & RAR3_ENDARC_DATACRC)
{
if (!Skip(file, &block, 4)) return false;
}
if (block.flags & RAR3_ENDARC_VOLNUMBER)
{
if (!Read32(file, &block, &m_volumeNo)) return false;
m_hasNextVolume = (block.flags & RAR3_ENDARC_NEXTVOL) != 0;
}
break;
}
else if (block.type < 0x72 || block.type > 0x7b)
{
// inlvaid block type
return false;
}
uint64 skip = block.trailsize;
if (m_encrypted)
{
skip -= 16 - m_decryptPos;
m_decryptPos = 16;
DecryptFree();
}
if (!file.Seek(skip, DiskFile::soCur))
{
return false;
}
}
return true;
}
void ArticleWriter::FlushCache()
{
detail("Flushing cache for %s", *m_infoName);
bool directWrite = g_Options->GetDirectWrite() && m_fileInfo->GetOutputInitialized();
DiskFile outfile;
bool needBufFile = false;
int flushedArticles = 0;
int64 flushedSize = 0;
{
ArticleCache::FlushGuard flushGuard = g_ArticleCache->GuardFlush();
std::vector<ArticleInfo*> cachedArticles;
{
Guard contentGuard = g_ArticleCache->GuardContent();
if (m_fileInfo->GetFlushLocked())
{
return;
}
m_fileInfo->SetFlushLocked(true);
cachedArticles.reserve(m_fileInfo->GetArticles()->size());
for (ArticleInfo* pa : m_fileInfo->GetArticles())
{
if (pa->GetSegmentContent())
{
cachedArticles.push_back(pa);
}
}
}
for (ArticleInfo* pa : cachedArticles)
{
if (m_fileInfo->GetDeleted() && !m_fileInfo->GetNzbInfo()->GetParking())
{
// the file was deleted during flushing: stop flushing immediately
break;
}
if (directWrite && !outfile.Active())
{
if (!outfile.Open(m_fileInfo->GetOutputFilename(), DiskFile::omReadWrite))
{
m_fileInfo->GetNzbInfo()->PrintMessage(Message::mkError,
"Could not open file %s: %s", m_fileInfo->GetOutputFilename(),
*FileSystem::GetLastErrorMessage());
// prevent multiple error messages
pa->DiscardSegment();
flushedArticles++;
break;
}
needBufFile = true;
}
BString<1024> destFile;
if (!directWrite)
{
destFile.Format("%s.tmp", pa->GetResultFilename());
if (!outfile.Open(destFile, DiskFile::omWrite))
{
m_fileInfo->GetNzbInfo()->PrintMessage(Message::mkError,
"Could not create file %s: %s", *destFile,
*FileSystem::GetLastErrorMessage());
// prevent multiple error messages
pa->DiscardSegment();
flushedArticles++;
break;
}
needBufFile = true;
}
if (outfile.Active() && needBufFile)
{
SetWriteBuffer(outfile, 0);
needBufFile = false;
}
if (directWrite)
{
outfile.Seek(pa->GetSegmentOffset());
}
if (!g_Options->GetSkipWrite())
{
outfile.Write(pa->GetSegmentContent(), pa->GetSegmentSize());
}
flushedSize += pa->GetSegmentSize();
flushedArticles++;
pa->DiscardSegment();
if (!directWrite)
{
outfile.Close();
if (!FileSystem::MoveFile(destFile, pa->GetResultFilename()))
{
m_fileInfo->GetNzbInfo()->PrintMessage(Message::mkError,
"Could not rename file %s to %s: %s", *destFile, pa->GetResultFilename(),
*FileSystem::GetLastErrorMessage());
}
}
}
outfile.Close();
{
Guard contentGuard = g_ArticleCache->GuardContent();
m_fileInfo->SetCachedArticles(m_fileInfo->GetCachedArticles() - flushedArticles);
m_fileInfo->SetFlushLocked(false);
}
}
detail("Saved %i articles (%.2f MB) from cache into disk for %s", flushedArticles,
(float)(flushedSize / 1024.0 / 1024.0), *m_infoName);
}
void ArticleWriter::CompleteFileParts()
{
debug("Completing file parts");
debug("ArticleFilename: %s", m_fileInfo->GetFilename());
bool directWrite = (g_Options->GetDirectWrite() || m_fileInfo->GetForceDirectWrite()) && m_fileInfo->GetOutputInitialized();
BString<1024> nzbName;
BString<1024> nzbDestDir;
BString<1024> filename;
{
GuardedDownloadQueue guard = DownloadQueue::Guard();
nzbName = m_fileInfo->GetNzbInfo()->GetName();
nzbDestDir = m_fileInfo->GetNzbInfo()->GetDestDir();
filename = m_fileInfo->GetFilename();
}
BString<1024> infoFilename("%s%c%s", *nzbName, PATH_SEPARATOR, *filename);
bool cached = m_fileInfo->GetCachedArticles() > 0;
if (g_Options->GetRawArticle())
{
detail("Moving articles for %s", *infoFilename);
}
else if (directWrite && cached)
{
detail("Writing articles for %s", *infoFilename);
}
else if (directWrite)
{
detail("Checking articles for %s", *infoFilename);
}
else
{
detail("Joining articles for %s", *infoFilename);
}
// Ensure the DstDir is created
CString errmsg;
if (!FileSystem::ForceDirectories(nzbDestDir, errmsg))
{
m_fileInfo->GetNzbInfo()->PrintMessage(Message::mkError,
"Could not create directory %s: %s", *nzbDestDir, *errmsg);
return;
}
CString ofn;
if (m_fileInfo->GetForceDirectWrite())
{
ofn.Format("%s%c%s", *nzbDestDir, PATH_SEPARATOR, *filename);
}
else
{
ofn = FileSystem::MakeUniqueFilename(nzbDestDir, *filename);
}
DiskFile outfile;
BString<1024> tmpdestfile("%s.tmp", *ofn);
if (!g_Options->GetRawArticle() && !directWrite)
{
FileSystem::DeleteFile(tmpdestfile);
if (!outfile.Open(tmpdestfile, DiskFile::omWrite))
{
m_fileInfo->GetNzbInfo()->PrintMessage(Message::mkError,
"Could not create file %s: %s", *tmpdestfile, *FileSystem::GetLastErrorMessage());
return;
}
}
else if (directWrite && cached)
{
if (!outfile.Open(m_outputFilename, DiskFile::omReadWrite))
{
m_fileInfo->GetNzbInfo()->PrintMessage(Message::mkError,
"Could not open file %s: %s", *m_outputFilename, *FileSystem::GetLastErrorMessage());
return;
}
tmpdestfile = *m_outputFilename;
}
else if (g_Options->GetRawArticle())
{
FileSystem::DeleteFile(tmpdestfile);
if (!FileSystem::CreateDirectory(ofn))
{
m_fileInfo->GetNzbInfo()->PrintMessage(Message::mkError,
"Could not create directory %s: %s", *ofn, *FileSystem::GetLastErrorMessage());
return;
}
}
if (outfile.Active())
{
SetWriteBuffer(outfile, 0);
}
uint32 crc = 0;
{
std::unique_ptr<ArticleCache::FlushGuard> flushGuard;
if (cached)
{
flushGuard = std::make_unique<ArticleCache::FlushGuard>(g_ArticleCache->GuardFlush());
}
CharBuffer buffer;
bool firstArticle = true;
if (!g_Options->GetRawArticle() && !directWrite)
{
buffer.Reserve(1024 * 64);
}
for (ArticleInfo* pa : m_fileInfo->GetArticles())
{
if (pa->GetStatus() != ArticleInfo::aiFinished)
{
continue;
}
if (!g_Options->GetRawArticle() && !directWrite && pa->GetSegmentOffset() > -1 &&
pa->GetSegmentOffset() > outfile.Position() && outfile.Position() > -1)
{
memset(buffer, 0, buffer.Size());
if (!g_Options->GetSkipWrite())
{
while (pa->GetSegmentOffset() > outfile.Position() && outfile.Position() > -1 &&
outfile.Write(buffer, std::min((int)(pa->GetSegmentOffset() - outfile.Position()), buffer.Size())));
}
}
if (pa->GetSegmentContent())
{
if (!g_Options->GetSkipWrite())
{
outfile.Seek(pa->GetSegmentOffset());
outfile.Write(pa->GetSegmentContent(), pa->GetSegmentSize());
}
pa->DiscardSegment();
}
else if (!g_Options->GetRawArticle() && !directWrite && !g_Options->GetSkipWrite())
{
DiskFile infile;
if (pa->GetResultFilename() && infile.Open(pa->GetResultFilename(), DiskFile::omRead))
{
int cnt = buffer.Size();
while (cnt == buffer.Size())
{
cnt = (int)infile.Read(buffer, buffer.Size());
outfile.Write(buffer, cnt);
}
infile.Close();
}
else
{
m_fileInfo->SetFailedArticles(m_fileInfo->GetFailedArticles() + 1);
m_fileInfo->SetSuccessArticles(m_fileInfo->GetSuccessArticles() - 1);
m_fileInfo->GetNzbInfo()->PrintMessage(Message::mkError,
"Could not find file %s for %s [%i/%i]",
pa->GetResultFilename(), *infoFilename, pa->GetPartNumber(),
(int)m_fileInfo->GetArticles()->size());
}
}
else if (g_Options->GetRawArticle())
{
BString<1024> dstFileName("%s%c%03i", *ofn, PATH_SEPARATOR, pa->GetPartNumber());
if (!FileSystem::MoveFile(pa->GetResultFilename(), dstFileName))
{
m_fileInfo->GetNzbInfo()->PrintMessage(Message::mkError,
"Could not move file %s to %s: %s", pa->GetResultFilename(),
*dstFileName, *FileSystem::GetLastErrorMessage());
}
}
if (m_format == Decoder::efYenc)
{
crc = firstArticle ? pa->GetCrc() : Crc32::Combine(crc, pa->GetCrc(), pa->GetSegmentSize());
firstArticle = false;
}
}
buffer.Clear();
}
if (outfile.Active())
{
outfile.Close();
if (!directWrite && !FileSystem::MoveFile(tmpdestfile, ofn))
{
m_fileInfo->GetNzbInfo()->PrintMessage(Message::mkError,
"Could not move file %s to %s: %s", *tmpdestfile, *ofn,
*FileSystem::GetLastErrorMessage());
}
}
if (directWrite)
{
if (!FileSystem::SameFilename(m_outputFilename, ofn) &&
!FileSystem::MoveFile(m_outputFilename, ofn))
{
m_fileInfo->GetNzbInfo()->PrintMessage(Message::mkError,
"Could not move file %s to %s: %s", *m_outputFilename, *ofn,
*FileSystem::GetLastErrorMessage());
}
// if destination directory was changed delete the old directory (if empty)
int len = strlen(nzbDestDir);
if (!(!strncmp(nzbDestDir, m_outputFilename, len) &&
(m_outputFilename[len] == PATH_SEPARATOR || m_outputFilename[len] == ALT_PATH_SEPARATOR)))
{
debug("Checking old dir for: %s", *m_outputFilename);
BString<1024> oldDestDir;
oldDestDir.Set(m_outputFilename, (int)(FileSystem::BaseFileName(m_outputFilename) - m_outputFilename));
if (FileSystem::DirEmpty(oldDestDir))
{
debug("Deleting old dir: %s", *oldDestDir);
FileSystem::RemoveDirectory(oldDestDir);
}
}
}
if (!directWrite)
{
for (ArticleInfo* pa : m_fileInfo->GetArticles())
{
if (pa->GetResultFilename())
{
FileSystem::DeleteFile(pa->GetResultFilename());
}
}
}
if (m_fileInfo->GetTotalArticles() == m_fileInfo->GetSuccessArticles())
{
m_fileInfo->GetNzbInfo()->PrintMessage(Message::mkInfo, "Successfully downloaded %s", *infoFilename);
}
else if (m_fileInfo->GetMissedArticles() + m_fileInfo->GetFailedArticles() > 0)
{
m_fileInfo->GetNzbInfo()->PrintMessage(Message::mkWarning,
"%i of %i article downloads failed for \"%s\"",
m_fileInfo->GetMissedArticles() + m_fileInfo->GetFailedArticles(),
m_fileInfo->GetTotalArticles(), *infoFilename);
}
else
{
m_fileInfo->GetNzbInfo()->PrintMessage(Message::mkInfo, "Partially downloaded %s", *infoFilename);
}
{
GuardedDownloadQueue guard = DownloadQueue::Guard();
m_fileInfo->SetCrc(crc);
m_fileInfo->SetOutputFilename(ofn);
if (strcmp(m_fileInfo->GetFilename(), filename))
{
// file was renamed during completion, need to move the file
ofn = FileSystem::MakeUniqueFilename(nzbDestDir, m_fileInfo->GetFilename());
if (!FileSystem::MoveFile(m_fileInfo->GetOutputFilename(), ofn))
{
m_fileInfo->GetNzbInfo()->PrintMessage(Message::mkError,
"Could not rename file %s to %s: %s", m_fileInfo->GetOutputFilename(),
*ofn, *FileSystem::GetLastErrorMessage());
}
m_fileInfo->SetOutputFilename(ofn);
}
if (strcmp(m_fileInfo->GetNzbInfo()->GetDestDir(), nzbDestDir))
{
// destination directory was changed during completion, need to move the file
MoveCompletedFiles(m_fileInfo->GetNzbInfo(), nzbDestDir);
}
}
}
