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// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: acquire-item.cc,v 1.6 1998/10/30 07:53:34 jgg 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 <strutl.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <stdio.h>
/*}}}*/
// Acquire::Item::Item - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* */
pkgAcquire::Item::Item(pkgAcquire *Owner) : Owner(Owner), 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)
{
Status = StatIdle;
if (QueueCounter <= 1)
{
ErrorText = LookupTag(Message,"Message");
Status = StatError;
Owner->Dequeue(this);
}
}
/*}}}*/
// Acquire::Item::Done - Item downloaded OK /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcquire::Item::Done(string,unsigned long,string)
{
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];
sprintf(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,const pkgSourceList::Item *Location) :
Item(Owner), Location(Location)
{
Decompression = false;
DestFile = _config->FindDir("Dir::State::lists") + "partial/";
DestFile += URItoFileName(Location->PackagesURI());
QueueURI(Location->PackagesURI() + ".gz",Location->PackagesInfo());
// Create the Release fetch class
new pkgAcqIndexRel(Owner,Location);
}
/*}}}*/
// 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(Location->PackagesURI());
struct stat Buf;
if (stat(Final.c_str(),&Buf) != 0)
return string();
return "\nLast-Modified: " + TimeRFC1123(Buf.st_mtime);
}
/*}}}*/
// 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)
{
Item::Done(Message,Size,MD5);
if (Decompression == true)
{
// Done, move it into position
string FinalFile = _config->FindDir("Dir::State::lists");
FinalFile += URItoFileName(Location->PackagesURI());
Rename(DestFile,FinalFile);
return;
}
// 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;
DestFile += ".decomp";
QueueURI("copy:" + FileName,string());
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;
Decompression = true;
DestFile += ".decomp";
QueueURI("gzip:" + FileName,string());
}
/*}}}*/
// AcqIndexRel::pkgAcqIndexRel - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* The Release file is added to the queue */
pkgAcqIndexRel::pkgAcqIndexRel(pkgAcquire *Owner,
const pkgSourceList::Item *Location) :
Item(Owner), Location(Location)
{
DestFile = _config->FindDir("Dir::State::lists") + "partial/";
DestFile += URItoFileName(Location->ReleaseURI());
QueueURI(Location->ReleaseURI(),Location->ReleaseInfo());
}
/*}}}*/
// AcqIndexRel::Custom600Headers - Insert custom request headers /*{{{*/
// ---------------------------------------------------------------------
/* The only header we use is the last-modified header. */
string pkgAcqIndexRel::Custom600Headers()
{
string Final = _config->FindDir("Dir::State::lists");
Final += URItoFileName(Location->ReleaseURI());
struct stat Buf;
if (stat(Final.c_str(),&Buf) != 0)
return string();
return "\nLast-Modified: " + TimeRFC1123(Buf.st_mtime);
}
/*}}}*/
// AcqIndexRel::Done - Item downloaded OK /*{{{*/
// ---------------------------------------------------------------------
/* The release file was not placed into the download directory then
a copy URI is generated and it is copied there otherwise the file
in the partial directory is moved into .. and the URI is finished. */
void pkgAcqIndexRel::Done(string Message,unsigned long Size,string MD5)
{
Item::Done(Message,Size,MD5);
string FileName = LookupTag(Message,"Filename");
if (FileName.empty() == true)
{
Status = StatError;
ErrorText = "Method gave a blank filename";
return;
}
// The files timestamp matches
if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == true)
return;
// We have to copy it into place
if (FileName != DestFile)
{
QueueURI("copy:" + FileName,string());
return;
}
// Done, move it into position
string FinalFile = _config->FindDir("Dir::State::lists");
FinalFile += URItoFileName(Location->ReleaseURI());
Rename(DestFile,FinalFile);
}
/*}}}*/
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