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// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: acquire-item.cc,v 1.46.2.9 2004/01/16 18:51:11 mdz Exp $
/* ######################################################################
Acquire Item - Item to acquire
Each item can download to exactly one file at a time. This means you
cannot create an item that fetches two uri's to two files at the same
time. The pkgAcqIndex class creates a second class upon instantiation
to fetch the other index files because of this.
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
#ifdef __GNUG__
#pragma implementation "apt-pkg/acquire-item.h"
#endif
#include <apt-pkg/acquire-item.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/sourcelist.h>
#include <apt-pkg/vendorlist.h>
#include <apt-pkg/error.h>
#include <apt-pkg/strutl.h>
#include <apt-pkg/fileutl.h>
#include <apt-pkg/md5.h>
#include <apti18n.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include <string>
#include <stdio.h>
/*}}}*/
using namespace std;
// Acquire::Item::Item - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* */
pkgAcquire::Item::Item(pkgAcquire *Owner) : Owner(Owner), FileSize(0),
PartialSize(0), Mode(0), ID(0), Complete(false),
Local(false), QueueCounter(0)
{
Owner->Add(this);
Status = StatIdle;
}
/*}}}*/
// Acquire::Item::~Item - Destructor /*{{{*/
// ---------------------------------------------------------------------
/* */
pkgAcquire::Item::~Item()
{
Owner->Remove(this);
}
/*}}}*/
// Acquire::Item::Failed - Item failed to download /*{{{*/
// ---------------------------------------------------------------------
/* We return to an idle state if there are still other queues that could
fetch this object */
void pkgAcquire::Item::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
{
Status = StatIdle;
ErrorText = LookupTag(Message,"Message");
if (QueueCounter <= 1)
{
/* This indicates that the file is not available right now but might
be sometime later. If we do a retry cycle then this should be
retried [CDROMs] */
if (Cnf->LocalOnly == true &&
StringToBool(LookupTag(Message,"Transient-Failure"),false) == true)
{
Status = StatIdle;
Dequeue();
return;
}
Status = StatError;
Dequeue();
}
}
/*}}}*/
// Acquire::Item::Start - Item has begun to download /*{{{*/
// ---------------------------------------------------------------------
/* Stash status and the file size. Note that setting Complete means
sub-phases of the acquire process such as decompresion are operating */
void pkgAcquire::Item::Start(string /*Message*/,unsigned long Size)
{
Status = StatFetching;
if (FileSize == 0 && Complete == false)
FileSize = Size;
}
/*}}}*/
// Acquire::Item::Done - Item downloaded OK /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcquire::Item::Done(string Message,unsigned long Size,string,
pkgAcquire::MethodConfig *Cnf)
{
// We just downloaded something..
string FileName = LookupTag(Message,"Filename");
if (Complete == false && FileName == DestFile)
{
if (Owner->Log != 0)
Owner->Log->Fetched(Size,atoi(LookupTag(Message,"Resume-Point","0").c_str()));
}
if (FileSize == 0)
FileSize= Size;
Status = StatDone;
ErrorText = string();
Owner->Dequeue(this);
}
/*}}}*/
// Acquire::Item::Rename - Rename a file /*{{{*/
// ---------------------------------------------------------------------
/* This helper function is used by alot of item methods as thier final
step */
void pkgAcquire::Item::Rename(string From,string To)
{
if (rename(From.c_str(),To.c_str()) != 0)
{
char S[300];
snprintf(S,sizeof(S),_("rename failed, %s (%s -> %s)."),strerror(errno),
From.c_str(),To.c_str());
Status = StatError;
ErrorText = S;
}
}
/*}}}*/
// AcqIndex::AcqIndex - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* The package file is added to the queue and a second class is
instantiated to fetch the revision file */
pkgAcqIndex::pkgAcqIndex(pkgAcquire *Owner,
string URI,string URIDesc,string ShortDesc,
string ExpectedMD5, string comprExt) :
Item(Owner), RealURI(URI), ExpectedMD5(ExpectedMD5)
{
Decompression = false;
Erase = false;
DestFile = _config->FindDir("Dir::State::lists") + "partial/";
DestFile += URItoFileName(URI);
if(comprExt.empty())
{
// autoselect
if(FileExists("/usr/bin/bzip2"))
Desc.URI = URI + ".bz2";
else
Desc.URI = URI + ".gz";
} else {
Desc.URI = URI + comprExt;
}
Desc.Description = URIDesc;
Desc.Owner = this;
Desc.ShortDesc = ShortDesc;
QueueURI(Desc);
}
/*}}}*/
// AcqIndex::Custom600Headers - Insert custom request headers /*{{{*/
// ---------------------------------------------------------------------
/* The only header we use is the last-modified header. */
string pkgAcqIndex::Custom600Headers()
{
string Final = _config->FindDir("Dir::State::lists");
Final += URItoFileName(RealURI);
struct stat Buf;
if (stat(Final.c_str(),&Buf) != 0)
return "\nIndex-File: true";
return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime);
}
/*}}}*/
void pkgAcqIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
{
// no .bz2 found, retry with .gz
if(Desc.URI.substr(Desc.URI.size()-3,Desc.URI.size()-1) == "bz2") {
Desc.URI = Desc.URI.substr(0,Desc.URI.size()-3) + "gz";
// retry with a gzip one
new pkgAcqIndex(Owner, RealURI, Desc.Description,Desc.ShortDesc,
ExpectedMD5, string(".gz"));
Status = StatDone;
Complete = false;
Dequeue();
return;
}
Item::Failed(Message,Cnf);
}
// AcqIndex::Done - Finished a fetch /*{{{*/
// ---------------------------------------------------------------------
/* This goes through a number of states.. On the initial fetch the
method could possibly return an alternate filename which points
to the uncompressed version of the file. If this is so the file
is copied into the partial directory. In all other cases the file
is decompressed with a gzip uri. */
void pkgAcqIndex::Done(string Message,unsigned long Size,string MD5,
pkgAcquire::MethodConfig *Cfg)
{
Item::Done(Message,Size,MD5,Cfg);
if (Decompression == true)
{
if (_config->FindB("Debug::pkgAcquire::Auth", false))
{
std::cerr << std::endl << RealURI << ": Computed MD5: " << MD5;
std::cerr << " Expected MD5: " << ExpectedMD5 << std::endl;
}
if (MD5.empty())
{
MD5Summation sum;
FileFd Fd(DestFile, FileFd::ReadOnly);
sum.AddFD(Fd.Fd(), Fd.Size());
Fd.Close();
MD5 = (string)sum.Result();
}
if (!ExpectedMD5.empty() && MD5 != ExpectedMD5)
{
Status = StatAuthError;
ErrorText = _("MD5Sum mismatch");
Rename(DestFile,DestFile + ".FAILED");
return;
}
// Done, move it into position
string FinalFile = _config->FindDir("Dir::State::lists");
FinalFile += URItoFileName(RealURI);
Rename(DestFile,FinalFile);
chmod(FinalFile.c_str(),0644);
/* We restore the original name to DestFile so that the clean operation
will work OK */
DestFile = _config->FindDir("Dir::State::lists") + "partial/";
DestFile += URItoFileName(RealURI);
// Remove the compressed version.
if (Erase == true)
unlink(DestFile.c_str());
return;
}
Erase = false;
Complete = true;
// Handle the unzipd case
string FileName = LookupTag(Message,"Alt-Filename");
if (FileName.empty() == false)
{
// The files timestamp matches
if (StringToBool(LookupTag(Message,"Alt-IMS-Hit"),false) == true)
return;
Decompression = true;
Local = true;
DestFile += ".decomp";
Desc.URI = "copy:" + FileName;
QueueURI(Desc);
Mode = "copy";
return;
}
FileName = LookupTag(Message,"Filename");
if (FileName.empty() == true)
{
Status = StatError;
ErrorText = "Method gave a blank filename";
}
// The files timestamp matches
if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == true)
return;
if (FileName == DestFile)
Erase = true;
else
Local = true;
string compExt = Desc.URI.substr(Desc.URI.size()-3,Desc.URI.size()-1);
char *decompProg;
if(compExt == "bz2")
decompProg = "bzip2";
else if(compExt == ".gz")
decompProg = "gzip";
else {
_error->Error("Unsupported extension: %s", compExt.c_str());
return;
}
Decompression = true;
DestFile += ".decomp";
Desc.URI = string(decompProg) + ":" + FileName;
QueueURI(Desc);
Mode = decompProg;
}
// AcqIndexTrans::pkgAcqIndexTrans - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* The Translation file is added to the queue */
pkgAcqIndexTrans::pkgAcqIndexTrans(pkgAcquire *Owner,
string URI,string URIDesc,string ShortDesc) :
pkgAcqIndex(Owner, URI, URIDesc, ShortDesc, "", "")
{
}
/*}}}*/
// AcqIndexTrans::Failed - Silence failure messages for missing files /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcqIndexTrans::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
{
if (Cnf->LocalOnly == true ||
StringToBool(LookupTag(Message,"Transient-Failure"),false) == false)
{
// Ignore this
Status = StatDone;
Complete = false;
Dequeue();
return;
}
Item::Failed(Message,Cnf);
}
/*}}}*/
pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire *Owner,
string URI,string URIDesc,string ShortDesc,
string MetaIndexURI, string MetaIndexURIDesc,
string MetaIndexShortDesc,
const vector<IndexTarget*>* IndexTargets,
indexRecords* MetaIndexParser) :
Item(Owner), RealURI(URI), MetaIndexURI(MetaIndexURI),
MetaIndexURIDesc(MetaIndexURIDesc), MetaIndexShortDesc(MetaIndexShortDesc)
{
this->MetaIndexParser = MetaIndexParser;
this->IndexTargets = IndexTargets;
DestFile = _config->FindDir("Dir::State::lists") + "partial/";
DestFile += URItoFileName(URI);
// remove any partial downloaded sig-file. it may confuse proxies
// and is too small to warrant a partial download anyway
unlink(DestFile.c_str());
// Create the item
Desc.Description = URIDesc;
Desc.Owner = this;
Desc.ShortDesc = ShortDesc;
Desc.URI = URI;
string Final = _config->FindDir("Dir::State::lists");
Final += URItoFileName(RealURI);
struct stat Buf;
if (stat(Final.c_str(),&Buf) == 0)
{
// File was already in place. It needs to be re-verified
// because Release might have changed, so Move it into partial
Rename(Final,DestFile);
}
QueueURI(Desc);
}
/*}}}*/
// pkgAcqMetaSig::Custom600Headers - Insert custom request headers /*{{{*/
// ---------------------------------------------------------------------
/* The only header we use is the last-modified header. */
string pkgAcqMetaSig::Custom600Headers()
{
struct stat Buf;
if (stat(DestFile.c_str(),&Buf) != 0)
return "\nIndex-File: true";
return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime);
}
void pkgAcqMetaSig::Done(string Message,unsigned long Size,string MD5,
pkgAcquire::MethodConfig *Cfg)
{
Item::Done(Message,Size,MD5,Cfg);
string FileName = LookupTag(Message,"Filename");
if (FileName.empty() == true)
{
Status = StatError;
ErrorText = "Method gave a blank filename";
return;
}
if (FileName != DestFile)
{
// We have to copy it into place
Local = true;
Desc.URI = "copy:" + FileName;
QueueURI(Desc);
return;
}
Complete = true;
// queue a pkgAcqMetaIndex to be verified against the sig we just retrieved
new pkgAcqMetaIndex(Owner, MetaIndexURI, MetaIndexURIDesc, MetaIndexShortDesc,
DestFile, IndexTargets, MetaIndexParser);
}
/*}}}*/
void pkgAcqMetaSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
{
// Delete any existing sigfile, so that this source isn't
// mistakenly trusted
string Final = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI);
unlink(Final.c_str());
// queue a pkgAcqMetaIndex with no sigfile
new pkgAcqMetaIndex(Owner, MetaIndexURI, MetaIndexURIDesc, MetaIndexShortDesc,
"", IndexTargets, MetaIndexParser);
if (Cnf->LocalOnly == true ||
StringToBool(LookupTag(Message,"Transient-Failure"),false) == false)
{
// Ignore this
Status = StatDone;
Complete = false;
Dequeue();
return;
}
Item::Failed(Message,Cnf);
}
pkgAcqMetaIndex::pkgAcqMetaIndex(pkgAcquire *Owner,
string URI,string URIDesc,string ShortDesc,
string SigFile,
const vector<struct IndexTarget*>* IndexTargets,
indexRecords* MetaIndexParser) :
Item(Owner), RealURI(URI), SigFile(SigFile)
{
this->AuthPass = false;
this->MetaIndexParser = MetaIndexParser;
this->IndexTargets = IndexTargets;
DestFile = _config->FindDir("Dir::State::lists") + "partial/";
DestFile += URItoFileName(URI);
// Create the item
Desc.Description = URIDesc;
Desc.Owner = this;
Desc.ShortDesc = ShortDesc;
Desc.URI = URI;
QueueURI(Desc);
}
/*}}}*/
// pkgAcqMetaIndex::Custom600Headers - Insert custom request headers /*{{{*/
// ---------------------------------------------------------------------
/* The only header we use is the last-modified header. */
string pkgAcqMetaIndex::Custom600Headers()
{
string Final = _config->FindDir("Dir::State::lists");
Final += URItoFileName(RealURI);
struct stat Buf;
if (stat(Final.c_str(),&Buf) != 0)
return "\nIndex-File: true";
return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime);
}
void pkgAcqMetaIndex::Done(string Message,unsigned long Size,string MD5,
pkgAcquire::MethodConfig *Cfg)
{
Item::Done(Message,Size,MD5,Cfg);
// MetaIndexes are done in two passes: one to download the
// metaindex with an appropriate method, and a second to verify it
// with the gpgv method
if (AuthPass == true)
{
AuthDone(Message);
}
else
{
RetrievalDone(Message);
if (!Complete)
// Still more retrieving to do
return;
if (SigFile == "")
{
// There was no signature file, so we are finished. Download
// the indexes without verification.
QueueIndexes(false);
}
else
{
// There was a signature file, so pass it to gpgv for
// verification
if (_config->FindB("Debug::pkgAcquire::Auth", false))
std::cerr << "Metaindex acquired, queueing gpg verification ("
<< SigFile << "," << DestFile << ")\n";
AuthPass = true;
Desc.URI = "gpgv:" + SigFile;
QueueURI(Desc);
Mode = "gpgv";
}
}
}
void pkgAcqMetaIndex::RetrievalDone(string Message)
{
// We have just finished downloading a Release file (it is not
// verified yet)
string FileName = LookupTag(Message,"Filename");
if (FileName.empty() == true)
{
Status = StatError;
ErrorText = "Method gave a blank filename";
return;
}
if (FileName != DestFile)
{
Local = true;
Desc.URI = "copy:" + FileName;
QueueURI(Desc);
return;
}
Complete = true;
string FinalFile = _config->FindDir("Dir::State::lists");
FinalFile += URItoFileName(RealURI);
// The files timestamp matches
if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == false)
{
// Move it into position
Rename(DestFile,FinalFile);
}
DestFile = FinalFile;
}
void pkgAcqMetaIndex::AuthDone(string Message)
{
// At this point, the gpgv method has succeeded, so there is a
// valid signature from a key in the trusted keyring. We
// perform additional verification of its contents, and use them
// to verify the indexes we are about to download
if (!MetaIndexParser->Load(DestFile))
{
Status = StatAuthError;
ErrorText = MetaIndexParser->ErrorText;
return;
}
if (!VerifyVendor())
{
return;
}
if (_config->FindB("Debug::pkgAcquire::Auth", false))
std::cerr << "Signature verification succeeded: "
<< DestFile << std::endl;
// Download further indexes with verification
QueueIndexes(true);
// Done, move signature file into position
string VerifiedSigFile = _config->FindDir("Dir::State::lists") +
URItoFileName(RealURI) + ".gpg";
Rename(SigFile,VerifiedSigFile);
chmod(VerifiedSigFile.c_str(),0644);
}
void pkgAcqMetaIndex::QueueIndexes(bool verify)
{
for (vector <struct IndexTarget*>::const_iterator Target = IndexTargets->begin();
Target != IndexTargets->end();
Target++)
{
string ExpectedIndexMD5;
if (verify)
{
const indexRecords::checkSum *Record = MetaIndexParser->Lookup((*Target)->MetaKey);
if (!Record)
{
Status = StatAuthError;
ErrorText = "Unable to find expected entry "
+ (*Target)->MetaKey + " in Meta-index file (malformed Release file?)";
return;
}
ExpectedIndexMD5 = Record->MD5Hash;
if (_config->FindB("Debug::pkgAcquire::Auth", false))
{
std::cerr << "Queueing: " << (*Target)->URI << std::endl;
std::cerr << "Expected MD5: " << ExpectedIndexMD5 << std::endl;
}
if (ExpectedIndexMD5.empty())
{
Status = StatAuthError;
ErrorText = "Unable to find MD5 sum for "
+ (*Target)->MetaKey + " in Meta-index file";
return;
}
}
// Queue Packages file
new pkgAcqIndex(Owner, (*Target)->URI, (*Target)->Description,
(*Target)->ShortDesc, ExpectedIndexMD5);
}
}
bool pkgAcqMetaIndex::VerifyVendor()
{
// // Maybe this should be made available from above so we don't have
// // to read and parse it every time?
// pkgVendorList List;
// List.ReadMainList();
// const Vendor* Vndr = NULL;
// for (std::vector<string>::const_iterator I = GPGVOutput.begin(); I != GPGVOutput.end(); I++)
// {
// string::size_type pos = (*I).find("VALIDSIG ");
// if (_config->FindB("Debug::Vendor", false))
// std::cerr << "Looking for VALIDSIG in \"" << (*I) << "\": pos " << pos
// << std::endl;
// if (pos != std::string::npos)
// {
// string Fingerprint = (*I).substr(pos+sizeof("VALIDSIG"));
// if (_config->FindB("Debug::Vendor", false))
// std::cerr << "Looking for \"" << Fingerprint << "\" in vendor..." <<
// std::endl;
// Vndr = List.FindVendor(Fingerprint) != "";
// if (Vndr != NULL);
// break;
// }
// }
string Transformed = MetaIndexParser->GetExpectedDist();
if (Transformed == "../project/experimental")
{
Transformed = "experimental";
}
string::size_type pos = Transformed.rfind('/');
if (pos != string::npos)
{
Transformed = Transformed.substr(0, pos);
}
if (Transformed == ".")
{
Transformed = "";
}
if (_config->FindB("Debug::pkgAcquire::Auth", false))
{
std::cerr << "Got Codename: " << MetaIndexParser->GetDist() << std::endl;
std::cerr << "Expecting Dist: " << MetaIndexParser->GetExpectedDist() << std::endl;
std::cerr << "Transformed Dist: " << Transformed << std::endl;
}
if (MetaIndexParser->CheckDist(Transformed) == false)
{
// This might become fatal one day
// Status = StatAuthError;
// ErrorText = "Conflicting distribution; expected "
// + MetaIndexParser->GetExpectedDist() + " but got "
// + MetaIndexParser->GetDist();
// return false;
if (!Transformed.empty())
{
_error->Warning("Conflicting distribution: %s (expected %s but got %s)",
Desc.Description.c_str(),
Transformed.c_str(),
MetaIndexParser->GetDist().c_str());
}
}
return true;
}
/*}}}*/
// pkgAcqMetaIndex::Failed - no Release file present or no signature
// file present /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcqMetaIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
{
if (AuthPass == true)
{
// gpgv method failed
_error->Warning("GPG error: %s: %s",
Desc.Description.c_str(),
LookupTag(Message,"Message").c_str());
}
// No Release file was present, or verification failed, so fall
// back to queueing Packages files without verification
QueueIndexes(false);
}
/*}}}*/
// AcqArchive::AcqArchive - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* This just sets up the initial fetch environment and queues the first
possibilitiy */
pkgAcqArchive::pkgAcqArchive(pkgAcquire *Owner,pkgSourceList *Sources,
pkgRecords *Recs,pkgCache::VerIterator const &Version,
string &StoreFilename) :
Item(Owner), Version(Version), Sources(Sources), Recs(Recs),
StoreFilename(StoreFilename), Vf(Version.FileList()),
Trusted(false)
{
Retries = _config->FindI("Acquire::Retries",0);
if (Version.Arch() == 0)
{
_error->Error(_("I wasn't able to locate a file for the %s package. "
"This might mean you need to manually fix this package. "
"(due to missing arch)"),
Version.ParentPkg().Name());
return;
}
/* We need to find a filename to determine the extension. We make the
assumption here that all the available sources for this version share
the same extension.. */
// Skip not source sources, they do not have file fields.
for (; Vf.end() == false; Vf++)
{
if ((Vf.File()->Flags & pkgCache::Flag::NotSource) != 0)
continue;
break;
}
// Does not really matter here.. we are going to fail out below
if (Vf.end() != true)
{
// If this fails to get a file name we will bomb out below.
pkgRecords::Parser &Parse = Recs->Lookup(Vf);
if (_error->PendingError() == true)
return;
// Generate the final file name as: package_version_arch.foo
StoreFilename = QuoteString(Version.ParentPkg().Name(),"_:") + '_' +
QuoteString(Version.VerStr(),"_:") + '_' +
QuoteString(Version.Arch(),"_:.") +
"." + flExtension(Parse.FileName());
}
// check if we have one trusted source for the package. if so, switch
// to "TrustedOnly" mode
for (pkgCache::VerFileIterator i = Version.FileList(); i.end() == false; i++)
{
pkgIndexFile *Index;
if (Sources->FindIndex(i.File(),Index) == false)
continue;
if (_config->FindB("Debug::pkgAcquire::Auth", false))
{
std::cerr << "Checking index: " << Index->Describe()
<< "(Trusted=" << Index->IsTrusted() << ")\n";
}
if (Index->IsTrusted()) {
Trusted = true;
break;
}
}
// Select a source
if (QueueNext() == false && _error->PendingError() == false)
_error->Error(_("I wasn't able to locate file for the %s package. "
"This might mean you need to manually fix this package."),
Version.ParentPkg().Name());
}
/*}}}*/
// AcqArchive::QueueNext - Queue the next file source /*{{{*/
// ---------------------------------------------------------------------
/* This queues the next available file version for download. It checks if
the archive is already available in the cache and stashs the MD5 for
checking later. */
bool pkgAcqArchive::QueueNext()
{
for (; Vf.end() == false; Vf++)
{
// Ignore not source sources
if ((Vf.File()->Flags & pkgCache::Flag::NotSource) != 0)
continue;
// Try to cross match against the source list
pkgIndexFile *Index;
if (Sources->FindIndex(Vf.File(),Index) == false)
continue;
// only try to get a trusted package from another source if that source
// is also trusted
if(Trusted && !Index->IsTrusted())
continue;
// Grab the text package record
pkgRecords::Parser &Parse = Recs->Lookup(Vf);
if (_error->PendingError() == true)
return false;
string PkgFile = Parse.FileName();
MD5 = Parse.MD5Hash();
if (PkgFile.empty() == true)
return _error->Error(_("The package index files are corrupted. No Filename: "
"field for package %s."),
Version.ParentPkg().Name());
Desc.URI = Index->ArchiveURI(PkgFile);
Desc.Description = Index->ArchiveInfo(Version);
Desc.Owner = this;
Desc.ShortDesc = Version.ParentPkg().Name();
// See if we already have the file. (Legacy filenames)
FileSize = Version->Size;
string FinalFile = _config->FindDir("Dir::Cache::Archives") + flNotDir(PkgFile);
struct stat Buf;
if (stat(FinalFile.c_str(),&Buf) == 0)
{
// Make sure the size matches
if ((unsigned)Buf.st_size == Version->Size)
{
Complete = true;
Local = true;
Status = StatDone;
StoreFilename = DestFile = FinalFile;
return true;
}
/* Hmm, we have a file and its size does not match, this means it is
an old style mismatched arch */
unlink(FinalFile.c_str());
}
// Check it again using the new style output filenames
FinalFile = _config->FindDir("Dir::Cache::Archives") + flNotDir(StoreFilename);
if (stat(FinalFile.c_str(),&Buf) == 0)
{
// Make sure the size matches
if ((unsigned)Buf.st_size == Version->Size)
{
Complete = true;
Local = true;
Status = StatDone;
StoreFilename = DestFile = FinalFile;
return true;
}
/* Hmm, we have a file and its size does not match, this shouldnt
happen.. */
unlink(FinalFile.c_str());
}
DestFile = _config->FindDir("Dir::Cache::Archives") + "partial/" + flNotDir(StoreFilename);
// Check the destination file
if (stat(DestFile.c_str(),&Buf) == 0)
{
// Hmm, the partial file is too big, erase it
if ((unsigned)Buf.st_size > Version->Size)
unlink(DestFile.c_str());
else
PartialSize = Buf.st_size;
}
// Create the item
Local = false;
Desc.URI = Index->ArchiveURI(PkgFile);
Desc.Description = Index->ArchiveInfo(Version);
Desc.Owner = this;
Desc.ShortDesc = Version.ParentPkg().Name();
QueueURI(Desc);
Vf++;
return true;
}
return false;
}
/*}}}*/
// AcqArchive::Done - Finished fetching /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcqArchive::Done(string Message,unsigned long Size,string Md5Hash,
pkgAcquire::MethodConfig *Cfg)
{
Item::Done(Message,Size,Md5Hash,Cfg);
// Check the size
if (Size != Version->Size)
{
Status = StatError;
ErrorText = _("Size mismatch");
return;
}
// Check the md5
if (Md5Hash.empty() == false && MD5.empty() == false)
{
if (Md5Hash != MD5)
{
Status = StatError;
ErrorText = _("MD5Sum mismatch");
Rename(DestFile,DestFile + ".FAILED");
return;
}
}
// Grab the output filename
string FileName = LookupTag(Message,"Filename");
if (FileName.empty() == true)
{
Status = StatError;
ErrorText = "Method gave a blank filename";
return;
}
Complete = true;
// Reference filename
if (FileName != DestFile)
{
StoreFilename = DestFile = FileName;
Local = true;
return;
}
// Done, move it into position
string FinalFile = _config->FindDir("Dir::Cache::Archives");
FinalFile += flNotDir(StoreFilename);
Rename(DestFile,FinalFile);
StoreFilename = DestFile = FinalFile;
Complete = true;
}
/*}}}*/
// AcqArchive::Failed - Failure handler /*{{{*/
// ---------------------------------------------------------------------
/* Here we try other sources */
void pkgAcqArchive::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
{
ErrorText = LookupTag(Message,"Message");
/* We don't really want to retry on failed media swaps, this prevents
that. An interesting observation is that permanent failures are not
recorded. */
if (Cnf->Removable == true &&
StringToBool(LookupTag(Message,"Transient-Failure"),false) == true)
{
// Vf = Version.FileList();
while (Vf.end() == false) Vf++;
StoreFilename = string();
Item::Failed(Message,Cnf);
return;
}
if (QueueNext() == false)
{
// This is the retry counter
if (Retries != 0 &&
Cnf->LocalOnly == false &&
StringToBool(LookupTag(Message,"Transient-Failure"),false) == true)
{
Retries--;
Vf = Version.FileList();
if (QueueNext() == true)
return;
}
StoreFilename = string();
Item::Failed(Message,Cnf);
}
}
/*}}}*/
// AcqArchive::IsTrusted - Determine whether this archive comes from a
// trusted source /*{{{*/
// ---------------------------------------------------------------------
bool pkgAcqArchive::IsTrusted()
{
return Trusted;
}
// AcqArchive::Finished - Fetching has finished, tidy up /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcqArchive::Finished()
{
if (Status == pkgAcquire::Item::StatDone &&
Complete == true)
return;
StoreFilename = string();
}
/*}}}*/
// AcqFile::pkgAcqFile - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* The file is added to the queue */
pkgAcqFile::pkgAcqFile(pkgAcquire *Owner,string URI,string MD5,
unsigned long Size,string Dsc,string ShortDesc) :
Item(Owner), Md5Hash(MD5)
{
Retries = _config->FindI("Acquire::Retries",0);
DestFile = flNotDir(URI);
// Create the item
Desc.URI = URI;
Desc.Description = Dsc;
Desc.Owner = this;
// Set the short description to the archive component
Desc.ShortDesc = ShortDesc;
// Get the transfer sizes
FileSize = Size;
struct stat Buf;
if (stat(DestFile.c_str(),&Buf) == 0)
{
// Hmm, the partial file is too big, erase it
if ((unsigned)Buf.st_size > Size)
unlink(DestFile.c_str());
else
PartialSize = Buf.st_size;
}
QueueURI(Desc);
}
/*}}}*/
// AcqFile::Done - Item downloaded OK /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcqFile::Done(string Message,unsigned long Size,string MD5,
pkgAcquire::MethodConfig *Cnf)
{
// Check the md5
if (Md5Hash.empty() == false && MD5.empty() == false)
{
if (Md5Hash != MD5)
{
Status = StatError;
ErrorText = "MD5Sum mismatch";
Rename(DestFile,DestFile + ".FAILED");
return;
}
}
Item::Done(Message,Size,MD5,Cnf);
string FileName = LookupTag(Message,"Filename");
if (FileName.empty() == true)
{
Status = StatError;
ErrorText = "Method gave a blank filename";
return;
}
Complete = true;
// The files timestamp matches
if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == true)
return;
// We have to copy it into place
if (FileName != DestFile)
{
Local = true;
if (_config->FindB("Acquire::Source-Symlinks",true) == false ||
Cnf->Removable == true)
{
Desc.URI = "copy:" + FileName;
QueueURI(Desc);
return;
}
// Erase the file if it is a symlink so we can overwrite it
struct stat St;
if (lstat(DestFile.c_str(),&St) == 0)
{
if (S_ISLNK(St.st_mode) != 0)
unlink(DestFile.c_str());
}
// Symlink the file
if (symlink(FileName.c_str(),DestFile.c_str()) != 0)
{
ErrorText = "Link to " + DestFile + " failure ";
Status = StatError;
Complete = false;
}
}
}
/*}}}*/
// AcqFile::Failed - Failure handler /*{{{*/
// ---------------------------------------------------------------------
/* Here we try other sources */
void pkgAcqFile::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
{
ErrorText = LookupTag(Message,"Message");
// This is the retry counter
if (Retries != 0 &&
Cnf->LocalOnly == false &&
StringToBool(LookupTag(Message,"Transient-Failure"),false) == true)
{
Retries--;
QueueURI(Desc);
return;
}
Item::Failed(Message,Cnf);
}
/*}}}*/