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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 /*{{{*/
#include <apt-pkg/acquire-item.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/aptconfiguration.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 <apt-pkg/sha1.h>
#include <apt-pkg/tagfile.h>
#include <apti18n.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include <string>
#include <sstream>
#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 Hash,
pkgAcquire::MethodConfig *Cnf)
{
// We just downloaded something..
string FileName = LookupTag(Message,"Filename");
// we only inform the Log class if it was actually not a local thing
if (Complete == false && !Local && 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;
}
}
/*}}}*/
// AcqDiffIndex::AcqDiffIndex - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* Get the DiffIndex file first and see if there are patches availabe
* If so, create a pkgAcqIndexDiffs fetcher that will get and apply the
* patches. If anything goes wrong in that process, it will fall back to
* the original packages file
*/
pkgAcqDiffIndex::pkgAcqDiffIndex(pkgAcquire *Owner,
string URI,string URIDesc,string ShortDesc,
HashString ExpectedHash)
: Item(Owner), RealURI(URI), ExpectedHash(ExpectedHash),
Description(URIDesc)
{
Debug = _config->FindB("Debug::pkgAcquire::Diffs",false);
Desc.Description = URIDesc + "/DiffIndex";
Desc.Owner = this;
Desc.ShortDesc = ShortDesc;
Desc.URI = URI + ".diff/Index";
DestFile = _config->FindDir("Dir::State::lists") + "partial/";
DestFile += URItoFileName(URI) + string(".DiffIndex");
if(Debug)
std::clog << "pkgAcqDiffIndex: " << Desc.URI << std::endl;
// look for the current package file
CurrentPackagesFile = _config->FindDir("Dir::State::lists");
CurrentPackagesFile += URItoFileName(RealURI);
// FIXME: this file:/ check is a hack to prevent fetching
// from local sources. this is really silly, and
// should be fixed cleanly as soon as possible
if(!FileExists(CurrentPackagesFile) ||
Desc.URI.substr(0,strlen("file:/")) == "file:/")
{
// we don't have a pkg file or we don't want to queue
if(Debug)
std::clog << "No index file, local or canceld by user" << std::endl;
Failed("", NULL);
return;
}
if(Debug)
std::clog << "pkgAcqIndexDiffs::pkgAcqIndexDiffs(): "
<< CurrentPackagesFile << std::endl;
QueueURI(Desc);
}
/*}}}*/
// AcqIndex::Custom600Headers - Insert custom request headers /*{{{*/
// ---------------------------------------------------------------------
/* The only header we use is the last-modified header. */
string pkgAcqDiffIndex::Custom600Headers()
{
string Final = _config->FindDir("Dir::State::lists");
Final += URItoFileName(RealURI) + string(".IndexDiff");
if(Debug)
std::clog << "Custom600Header-IMS: " << Final << std::endl;
struct stat Buf;
if (stat(Final.c_str(),&Buf) != 0)
return "\nIndex-File: true";
return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime);
}
/*}}}*/
bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile) /*{{{*/
{
if(Debug)
std::clog << "pkgAcqIndexDiffs::ParseIndexDiff() " << IndexDiffFile
<< std::endl;
pkgTagSection Tags;
string ServerSha1;
vector<DiffInfo> available_patches;
FileFd Fd(IndexDiffFile,FileFd::ReadOnly);
pkgTagFile TF(&Fd);
if (_error->PendingError() == true)
return false;
if(TF.Step(Tags) == true)
{
bool found = false;
DiffInfo d;
string size;
string const tmp = Tags.FindS("SHA1-Current");
std::stringstream ss(tmp);
ss >> ServerSha1 >> size;
unsigned long const ServerSize = atol(size.c_str());
FileFd fd(CurrentPackagesFile, FileFd::ReadOnly);
SHA1Summation SHA1;
SHA1.AddFD(fd.Fd(), fd.Size());
string const local_sha1 = SHA1.Result();
if(local_sha1 == ServerSha1)
{
// we have the same sha1 as the server
if(Debug)
std::clog << "Package file is up-to-date" << std::endl;
// set found to true, this will queue a pkgAcqIndexDiffs with
// a empty availabe_patches
found = true;
}
else
{
if(Debug)
std::clog << "SHA1-Current: " << ServerSha1 << std::endl;
// check the historie and see what patches we need
string const history = Tags.FindS("SHA1-History");
std::stringstream hist(history);
while(hist >> d.sha1 >> size >> d.file)
{
// read until the first match is found
// from that point on, we probably need all diffs
if(d.sha1 == local_sha1)
found=true;
else if (found == false)
continue;
if(Debug)
std::clog << "Need to get diff: " << d.file << std::endl;
available_patches.push_back(d);
}
if (available_patches.empty() == false)
{
// patching with too many files is rather slow compared to a fast download
unsigned long const fileLimit = _config->FindI("Acquire::PDiffs::FileLimit", 0);
if (fileLimit != 0 && fileLimit < available_patches.size())
{
if (Debug)
std::clog << "Need " << available_patches.size() << " diffs (Limit is " << fileLimit
<< ") so fallback to complete download" << std::endl;
return false;
}
// see if the patches are too big
found = false; // it was true and it will be true again at the end
d = *available_patches.begin();
string const firstPatch = d.file;
unsigned long patchesSize = 0;
std::stringstream patches(Tags.FindS("SHA1-Patches"));
while(patches >> d.sha1 >> size >> d.file)
{
if (firstPatch == d.file)
found = true;
else if (found == false)
continue;
patchesSize += atol(size.c_str());
}
unsigned long const sizeLimit = ServerSize * _config->FindI("Acquire::PDiffs::SizeLimit", 100);
if (sizeLimit > 0 && (sizeLimit/100) < patchesSize)
{
if (Debug)
std::clog << "Need " << patchesSize << " bytes (Limit is " << sizeLimit/100
<< ") so fallback to complete download" << std::endl;
return false;
}
}
}
// we have something, queue the next diff
if(found)
{
// queue the diffs
string::size_type const last_space = Description.rfind(" ");
if(last_space != string::npos)
Description.erase(last_space, Description.size()-last_space);
new pkgAcqIndexDiffs(Owner, RealURI, Description, Desc.ShortDesc,
ExpectedHash, ServerSha1, available_patches);
Complete = false;
Status = StatDone;
Dequeue();
return true;
}
}
// Nothing found, report and return false
// Failing here is ok, if we return false later, the full
// IndexFile is queued
if(Debug)
std::clog << "Can't find a patch in the index file" << std::endl;
return false;
}
/*}}}*/
void pkgAcqDiffIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf) /*{{{*/
{
if(Debug)
std::clog << "pkgAcqDiffIndex failed: " << Desc.URI << std::endl
<< "Falling back to normal index file aquire" << std::endl;
new pkgAcqIndex(Owner, RealURI, Description, Desc.ShortDesc,
ExpectedHash);
Complete = false;
Status = StatDone;
Dequeue();
}
/*}}}*/
void pkgAcqDiffIndex::Done(string Message,unsigned long Size,string Md5Hash, /*{{{*/
pkgAcquire::MethodConfig *Cnf)
{
if(Debug)
std::clog << "pkgAcqDiffIndex::Done(): " << Desc.URI << std::endl;
Item::Done(Message,Size,Md5Hash,Cnf);
string FinalFile;
FinalFile = _config->FindDir("Dir::State::lists")+URItoFileName(RealURI);
// sucess in downloading the index
// rename the index
FinalFile += string(".IndexDiff");
if(Debug)
std::clog << "Renaming: " << DestFile << " -> " << FinalFile
<< std::endl;
Rename(DestFile,FinalFile);
chmod(FinalFile.c_str(),0644);
DestFile = FinalFile;
if(!ParseDiffIndex(DestFile))
return Failed("", NULL);
Complete = true;
Status = StatDone;
Dequeue();
return;
}
/*}}}*/
// AcqIndexDiffs::AcqIndexDiffs - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* The package diff is added to the queue. one object is constructed
* for each diff and the index
*/
pkgAcqIndexDiffs::pkgAcqIndexDiffs(pkgAcquire *Owner,
string URI,string URIDesc,string ShortDesc,
HashString ExpectedHash,
string ServerSha1,
vector<DiffInfo> diffs)
: Item(Owner), RealURI(URI), ExpectedHash(ExpectedHash),
available_patches(diffs), ServerSha1(ServerSha1)
{
DestFile = _config->FindDir("Dir::State::lists") + "partial/";
DestFile += URItoFileName(URI);
Debug = _config->FindB("Debug::pkgAcquire::Diffs",false);
Description = URIDesc;
Desc.Owner = this;
Desc.ShortDesc = ShortDesc;
if(available_patches.size() == 0)
{
// we are done (yeah!)
Finish(true);
}
else
{
// get the next diff
State = StateFetchDiff;
QueueNextDiff();
}
}
/*}}}*/
void pkgAcqIndexDiffs::Failed(string Message,pkgAcquire::MethodConfig *Cnf) /*{{{*/
{
if(Debug)
std::clog << "pkgAcqIndexDiffs failed: " << Desc.URI << std::endl
<< "Falling back to normal index file aquire" << std::endl;
new pkgAcqIndex(Owner, RealURI, Description,Desc.ShortDesc,
ExpectedHash);
Finish();
}
/*}}}*/
// Finish - helper that cleans the item out of the fetcher queue /*{{{*/
void pkgAcqIndexDiffs::Finish(bool allDone)
{
// we restore the original name, this is required, otherwise
// the file will be cleaned
if(allDone)
{
DestFile = _config->FindDir("Dir::State::lists");
DestFile += URItoFileName(RealURI);
if(!ExpectedHash.empty() && !ExpectedHash.VerifyFile(DestFile))
{
Status = StatAuthError;
ErrorText = _("MD5Sum mismatch");
Rename(DestFile,DestFile + ".FAILED");
Dequeue();
return;
}
// this is for the "real" finish
Complete = true;
Status = StatDone;
Dequeue();
if(Debug)
std::clog << "\n\nallDone: " << DestFile << "\n" << std::endl;
return;
}
if(Debug)
std::clog << "Finishing: " << Desc.URI << std::endl;
Complete = false;
Status = StatDone;
Dequeue();
return;
}
/*}}}*/
bool pkgAcqIndexDiffs::QueueNextDiff() /*{{{*/
{
// calc sha1 of the just patched file
string FinalFile = _config->FindDir("Dir::State::lists");
FinalFile += URItoFileName(RealURI);
FileFd fd(FinalFile, FileFd::ReadOnly);
SHA1Summation SHA1;
SHA1.AddFD(fd.Fd(), fd.Size());
string local_sha1 = string(SHA1.Result());
if(Debug)
std::clog << "QueueNextDiff: "
<< FinalFile << " (" << local_sha1 << ")"<<std::endl;
// final file reached before all patches are applied
if(local_sha1 == ServerSha1)
{
Finish(true);
return true;
}
// remove all patches until the next matching patch is found
// this requires the Index file to be ordered
for(vector<DiffInfo>::iterator I=available_patches.begin();
available_patches.size() > 0 &&
I != available_patches.end() &&
(*I).sha1 != local_sha1;
I++)
{
available_patches.erase(I);
}
// error checking and falling back if no patch was found
if(available_patches.size() == 0)
{
Failed("", NULL);
return false;
}
// queue the right diff
Desc.URI = string(RealURI) + ".diff/" + available_patches[0].file + ".gz";
Desc.Description = Description + " " + available_patches[0].file + string(".pdiff");
DestFile = _config->FindDir("Dir::State::lists") + "partial/";
DestFile += URItoFileName(RealURI + ".diff/" + available_patches[0].file);
if(Debug)
std::clog << "pkgAcqIndexDiffs::QueueNextDiff(): " << Desc.URI << std::endl;
QueueURI(Desc);
return true;
}
/*}}}*/
void pkgAcqIndexDiffs::Done(string Message,unsigned long Size,string Md5Hash, /*{{{*/
pkgAcquire::MethodConfig *Cnf)
{
if(Debug)
std::clog << "pkgAcqIndexDiffs::Done(): " << Desc.URI << std::endl;
Item::Done(Message,Size,Md5Hash,Cnf);
string FinalFile;
FinalFile = _config->FindDir("Dir::State::lists")+URItoFileName(RealURI);
// sucess in downloading a diff, enter ApplyDiff state
if(State == StateFetchDiff)
{
if(Debug)
std::clog << "Sending to gzip method: " << FinalFile << std::endl;
string FileName = LookupTag(Message,"Filename");
State = StateUnzipDiff;
Local = true;
Desc.URI = "gzip:" + FileName;
DestFile += ".decomp";
QueueURI(Desc);
Mode = "gzip";
return;
}
// sucess in downloading a diff, enter ApplyDiff state
if(State == StateUnzipDiff)
{
// rred excepts the patch as $FinalFile.ed
Rename(DestFile,FinalFile+".ed");
if(Debug)
std::clog << "Sending to rred method: " << FinalFile << std::endl;
State = StateApplyDiff;
Local = true;
Desc.URI = "rred:" + FinalFile;
QueueURI(Desc);
Mode = "rred";
return;
}
// success in download/apply a diff, queue next (if needed)
if(State == StateApplyDiff)
{
// remove the just applied patch
available_patches.erase(available_patches.begin());
// move into place
if(Debug)
{
std::clog << "Moving patched file in place: " << std::endl
<< DestFile << " -> " << FinalFile << std::endl;
}
Rename(DestFile,FinalFile);
chmod(FinalFile.c_str(),0644);
// see if there is more to download
if(available_patches.size() > 0) {
new pkgAcqIndexDiffs(Owner, RealURI, Description, Desc.ShortDesc,
ExpectedHash, ServerSha1, available_patches);
return Finish();
} else
return Finish(true);
}
}
/*}}}*/
// 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,
HashString ExpectedHash, string comprExt)
: Item(Owner), RealURI(URI), ExpectedHash(ExpectedHash)
{
Decompression = false;
Erase = false;
DestFile = _config->FindDir("Dir::State::lists") + "partial/";
DestFile += URItoFileName(URI);
if(comprExt.empty())
{
// autoselect the compression method
std::vector<std::string> types = APT::Configuration::getCompressionTypes();
if (types.empty() == true)
comprExt = "plain";
else
comprExt = "." + types[0];
}
CompressionExtension = ((comprExt == "plain" || comprExt == ".") ? "" : comprExt);
Desc.URI = URI + CompressionExtension;
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) /*{{{*/
{
std::vector<std::string> types = APT::Configuration::getCompressionTypes();
for (std::vector<std::string>::const_iterator t = types.begin();
t != types.end(); t++)
{
// jump over all already tried compression types
const unsigned int nameLen = Desc.URI.size() - (*t).size();
if(Desc.URI.substr(nameLen) != *t)
continue;
// we want to try it with the next extension (and make sure to
// not skip over the end)
t++;
if (t == types.end())
break;
// queue new download
Desc.URI = Desc.URI.substr(0, nameLen) + *t;
new pkgAcqIndex(Owner, RealURI, Desc.Description, Desc.ShortDesc,
ExpectedHash, string(".").append(*t));
Status = StatDone;
Complete = false;
Dequeue();
return;
}
// on decompression failure, remove bad versions in partial/
if(Decompression && Erase) {
string s = _config->FindDir("Dir::State::lists") + "partial/";
s += URItoFileName(RealURI);
unlink(s.c_str());
}
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 Hash,
pkgAcquire::MethodConfig *Cfg)
{
Item::Done(Message,Size,Hash,Cfg);
if (Decompression == true)
{
if (_config->FindB("Debug::pkgAcquire::Auth", false))
{
std::cerr << std::endl << RealURI << ": Computed Hash: " << Hash;
std::cerr << " Expected Hash: " << ExpectedHash.toStr() << std::endl;
}
if (!ExpectedHash.empty() && ExpectedHash.toStr() != Hash)
{
Status = StatAuthError;
ErrorText = _("Hash Sum 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 = flExtension(flNotDir(URI(Desc.URI).Path));
string decompProg;
// get the binary name for your used compression type
decompProg = _config->Find(string("Acquire::CompressionTypes::").append(compExt),"");
if(decompProg.empty() == false);
// flExtensions returns the full name if no extension is found
// this is why we have this complicated compare operation here
// FIMXE: add a new flJustExtension() that return "" if no
// extension is found and use that above so that it can
// be tested against ""
else if(compExt == flNotDir(URI(Desc.URI).Path))
decompProg = "copy";
else {
_error->Error("Unsupported extension: %s", compExt.c_str());
return;
}
Decompression = true;
DestFile += ".decomp";
Desc.URI = decompProg + ":" + FileName;
QueueURI(Desc);
Mode = decompProg.c_str();
}
/*}}}*/
// 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, HashString(), "")
{
}
/*}}}*/
// 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),
MetaIndexParser(MetaIndexParser), IndexTargets(IndexTargets)
{
DestFile = _config->FindDir("Dir::State::lists") + "partial/";
DestFile += URItoFileName(URI);
// remove any partial downloaded sig-file in partial/.
// 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-downloaded/verified
// because Release might have changed, we do give it a differnt
// name than DestFile because otherwise the http method will
// send If-Range requests and there are too many broken servers
// out there that do not understand them
LastGoodSig = DestFile+".reverify";
Rename(Final,LastGoodSig);
}
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(LastGoodSig.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;
// put the last known good file back on i-m-s hit (it will
// be re-verified again)
// Else do nothing, we have the new file in DestFile then
if(StringToBool(LookupTag(Message,"IMS-Hit"),false) == true)
Rename(LastGoodSig, DestFile);
// 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)/*{{{*/
{
string Final = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI);
// if we get a network error we fail gracefully
if(Status == StatTransientNetworkError)
{
Item::Failed(Message,Cnf);
// move the sigfile back on transient network failures
if(FileExists(DestFile))
Rename(LastGoodSig,Final);
// set the status back to , Item::Failed likes to reset it
Status = pkgAcquire::Item::StatTransientNetworkError;
return;
}
// Delete any existing sigfile when the acquire failed
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), IndexTargets(IndexTargets),
MetaIndexParser(MetaIndexParser), AuthPass(false), IMSHit(false)
{
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 Hash, /*{{{*/
pkgAcquire::MethodConfig *Cfg)
{
Item::Done(Message,Size,Hash,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;
}
// see if the download was a IMSHit
IMSHit = StringToBool(LookupTag(Message,"IMS-Hit"),false);
Complete = true;
string FinalFile = _config->FindDir("Dir::State::lists");
FinalFile += URItoFileName(RealURI);
// If we get a IMS hit we can remove the empty file in partial
// othersie we move the file in place
if (IMSHit)
unlink(DestFile.c_str());
else
Rename(DestFile,FinalFile);
chmod(FinalFile.c_str(),0644);
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(Message))
{
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++)
{
HashString ExpectedIndexHash;
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;
}
ExpectedIndexHash = Record->Hash;
if (_config->FindB("Debug::pkgAcquire::Auth", false))
{
std::cerr << "Queueing: " << (*Target)->URI << std::endl;
std::cerr << "Expected Hash: " << ExpectedIndexHash.toStr() << std::endl;
}
if (ExpectedIndexHash.empty())
{
Status = StatAuthError;
ErrorText = "Unable to find hash sum for "
+ (*Target)->MetaKey + " in Meta-index file";
return;
}
}
// Queue Packages file (either diff or full packages files, depending
// on the users option)
if(_config->FindB("Acquire::PDiffs",true) == true)
new pkgAcqDiffIndex(Owner, (*Target)->URI, (*Target)->Description,
(*Target)->ShortDesc, ExpectedIndexHash);
else
new pkgAcqIndex(Owner, (*Target)->URI, (*Target)->Description,
(*Target)->ShortDesc, ExpectedIndexHash);
}
}
/*}}}*/
bool pkgAcqMetaIndex::VerifyVendor(string Message) /*{{{*/
{
// // 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::size_type pos;
// check for missing sigs (that where not fatal because otherwise we had
// bombed earlier)
string missingkeys;
string msg = _("There is no public key available for the "
"following key IDs:\n");
pos = Message.find("NO_PUBKEY ");
if (pos != std::string::npos)
{
string::size_type start = pos+strlen("NO_PUBKEY ");
string Fingerprint = Message.substr(start, Message.find("\n")-start);
missingkeys += (Fingerprint);
}
if(!missingkeys.empty())
_error->Warning("%s", string(msg+missingkeys).c_str());
string Transformed = MetaIndexParser->GetExpectedDist();
if (Transformed == "../project/experimental")
{
Transformed = "experimental";
}
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)
{
// if we fail the authentication but got the file via a IMS-Hit
// this means that the file wasn't downloaded and that it might be
// just stale (server problem, proxy etc). we delete what we have
// queue it again without i-m-s
// alternatively we could just unlink the file and let the user try again
if (IMSHit)
{
Complete = false;
Local = false;
AuthPass = false;
unlink(DestFile.c_str());
DestFile = _config->FindDir("Dir::State::lists") + "partial/";
DestFile += URItoFileName(RealURI);
Desc.URI = RealURI;
QueueURI(Desc);
return;
}
// 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;
}
}
// "allow-unauthenticated" restores apts old fetching behaviour
// that means that e.g. unauthenticated file:// uris are higher
// priority than authenticated http:// uris
if (_config->FindB("APT::Get::AllowUnauthenticated",false) == true)
Trusted = false;
// 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()
{
string const ForceHash = _config->Find("Acquire::ForceHash");
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();
if (ForceHash.empty() == false)
{
if(stringcasecmp(ForceHash, "sha256") == 0)
ExpectedHash = HashString("SHA256", Parse.SHA256Hash());
else if (stringcasecmp(ForceHash, "sha1") == 0)
ExpectedHash = HashString("SHA1", Parse.SHA1Hash());
else
ExpectedHash = HashString("MD5Sum", Parse.MD5Hash());
}
else
{
string Hash;
if ((Hash = Parse.SHA256Hash()).empty() == false)
ExpectedHash = HashString("SHA256", Hash);
else if ((Hash = Parse.SHA1Hash()).empty() == false)
ExpectedHash = HashString("SHA1", Hash);
else
ExpectedHash = HashString("MD5Sum", 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 CalcHash,
pkgAcquire::MethodConfig *Cfg)
{
Item::Done(Message,Size,CalcHash,Cfg);
// Check the size
if (Size != Version->Size)
{
Status = StatError;
ErrorText = _("Size mismatch");
return;
}
// Check the hash
if(ExpectedHash.toStr() != CalcHash)
{
Status = StatError;
ErrorText = _("Hash Sum mismatch");
if(FileExists(DestFile))
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 Hash,
unsigned long Size,string Dsc,string ShortDesc,
const string &DestDir, const string &DestFilename) :
Item(Owner), ExpectedHash(Hash)
{
Retries = _config->FindI("Acquire::Retries",0);
if(!DestFilename.empty())
DestFile = DestFilename;
else if(!DestDir.empty())
DestFile = DestDir + "/" + flNotDir(URI);
else
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 CalcHash,
pkgAcquire::MethodConfig *Cnf)
{
Item::Done(Message,Size,CalcHash,Cnf);
// Check the hash
if(!ExpectedHash.empty() && ExpectedHash.toStr() != CalcHash)
{
Status = StatError;
ErrorText = "Hash Sum mismatch";
Rename(DestFile,DestFile + ".FAILED");
return;
}
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);
}
/*}}}*/