[ntk/apt.git] / apt-pkg / packagemanager.cc

// -*- mode: cpp; mode: fold -*-
// Description								/*{{{*/
// $Id: packagemanager.cc,v 1.18 1999/07/10 04:58:42 jgg Exp $
/* ######################################################################

   Package Manager - Abstacts the package manager

   More work is needed in the area of transitioning provides, ie exim
   replacing smail. This can cause interesing side effects.

   Other cases involving conflicts+replaces should be tested. 
   
   ##################################################################### */
									/*}}}*/
// Include Files							/*{{{*/
#ifdef __GNUG__
#pragma implementation "apt-pkg/packagemanager.h"
#endif
#include <apt-pkg/packagemanager.h>
#include <apt-pkg/orderlist.h>
#include <apt-pkg/depcache.h>
#include <apt-pkg/error.h>
#include <apt-pkg/version.h>
#include <apt-pkg/acquire-item.h>
#include <apt-pkg/algorithms.h>
#include <apt-pkg/configuration.h>
									/*}}}*/

// PM::PackageManager - Constructor					/*{{{*/
// ---------------------------------------------------------------------
/* */
pkgPackageManager::pkgPackageManager(pkgDepCache &Cache) : Cache(Cache)
{
   FileNames = new string[Cache.Head().PackageCount];
   List = 0;
   Debug = _config->FindB("Debug::pkgPackageManager",false);
}
									/*}}}*/
// PM::PackageManager - Destructor					/*{{{*/
// ---------------------------------------------------------------------
/* */
pkgPackageManager::~pkgPackageManager()
{
   delete List;
   delete [] FileNames;
}
									/*}}}*/
// PM::GetArchives - Queue the archives for download			/*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgPackageManager::GetArchives(pkgAcquire *Owner,pkgSourceList *Sources,
				    pkgRecords *Recs)
{
   if (CreateOrderList() == false)
      return false;
   
   if (List->OrderUnpack() == false)
      return _error->Error("Internal ordering error");

   for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
   {
      PkgIterator Pkg(Cache,*I);
      FileNames[Pkg->ID] = string();
      
      // Skip packages to erase
      if (Cache[Pkg].Delete() == true)
	 continue;

      // Skip Packages that need configure only.
      if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure && 
	  Cache[Pkg].Keep() == true)
	 continue;

      // Skip already processed packages
      if (List->IsNow(Pkg) == false)
	 continue;
	 
      new pkgAcqArchive(Owner,Sources,Recs,Cache[Pkg].InstVerIter(Cache),
			FileNames[Pkg->ID]);
   }

   return true;
}
									/*}}}*/
// PM::FixMissing - Keep all missing packages				/*{{{*/
// ---------------------------------------------------------------------
/* This is called to correct the installation when packages could not
   be downloaded. */
bool pkgPackageManager::FixMissing()
{
   pkgProblemResolver Resolve(Cache);
   List->SetFileList(FileNames);
   
   bool Bad = false;
   for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
   {
      if (List->IsMissing(I) == false)
	 continue;
   
      // Okay, this file is missing and we need it. Mark it for keep 
      Bad = true;
      Cache.MarkKeep(I);
   }
   
   if (Bad == false)
      return true;
   
   // Now downgrade everything that is broken
   return Resolve.ResolveByKeep() == true && Cache.BrokenCount() == 0;   
}
									/*}}}*/

// PM::CreateOrderList - Create the ordering class			/*{{{*/
// ---------------------------------------------------------------------
/* This populates the ordering list with all the packages that are
   going to change. */
bool pkgPackageManager::CreateOrderList()
{
   if (List != 0)
      return true;
   
   delete List;
   List = new pkgOrderList(Cache);
   
   bool NoImmConfigure = _config->FindB("APT::Immediate-Configure",false);
   
   // Generate the list of affected packages and sort it
   for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
   {
      // Mark the package and its dependends for immediate configuration
      if (((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential ||
	   (I->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important) &&
	  NoImmConfigure == false)
      {
	 List->Flag(I,pkgOrderList::Immediate);
	 
	 // Look for other packages to make immediate configurea
	 if (Cache[I].InstallVer != 0)
	    for (DepIterator D = Cache[I].InstVerIter(Cache).DependsList(); 
		 D.end() == false; D++)
	       if (D->Type == pkgCache::Dep::Depends || D->Type == pkgCache::Dep::PreDepends)
		  List->Flag(D.TargetPkg(),pkgOrderList::Immediate);
	 
	 // And again with the current version.
	 if (I->CurrentVer != 0)
	    for (DepIterator D = I.CurrentVer().DependsList(); 
		 D.end() == false; D++)
	       if (D->Type == pkgCache::Dep::Depends || D->Type == pkgCache::Dep::PreDepends)
		  List->Flag(D.TargetPkg(),pkgOrderList::Immediate);
      }
      
      // Not interesting
      if ((Cache[I].Keep() == true || 
	  Cache[I].InstVerIter(Cache) == I.CurrentVer()) && 
	  I.State() == pkgCache::PkgIterator::NeedsNothing &&
	  (I.Purge() != false || Cache[I].Mode != pkgDepCache::ModeDelete ||
	   (Cache[I].iFlags & pkgDepCache::Purge) != pkgDepCache::Purge))
	 continue;
      
      // Append it to the list
      List->push_back(I);      
   }
   
   return true;
}
									/*}}}*/
// PM::DepAlwaysTrue - Returns true if this dep is irrelevent		/*{{{*/
// ---------------------------------------------------------------------
/* The restriction on provides is to eliminate the case when provides
   are transitioning between valid states [ie exim to smail] */
bool pkgPackageManager::DepAlwaysTrue(DepIterator D)
{
   if (D.TargetPkg()->ProvidesList != 0)
      return false;
   
   if ((Cache[D] & pkgDepCache::DepInstall) != 0 &&
       (Cache[D] & pkgDepCache::DepNow) != 0)
      return true;
   return false;
}
									/*}}}*/
// PM::CheckRConflicts - Look for reverse conflicts			/*{{{*/
// ---------------------------------------------------------------------
/* This looks over the reverses for a conflicts line that needs early
   removal. */
bool pkgPackageManager::CheckRConflicts(PkgIterator Pkg,DepIterator D,
					const char *Ver)
{
   for (;D.end() == false; D++)
   {
      if (D->Type != pkgCache::Dep::Conflicts)
	 continue;
      
      if (D.ParentPkg() == Pkg)
	 continue;
      
      if (pkgCheckDep(D.TargetVer(),Ver,D->CompareOp) == false)
	 continue;

      if (List->IsNow(Pkg) == false)
	 continue;
      
      if (EarlyRemove(D.ParentPkg()) == false)
	 return false;
   }  
   return true;
}
									/*}}}*/
// PM::ConfigureAll - Run the all out configuration			/*{{{*/
// ---------------------------------------------------------------------
/* This configures every package. It is assumed they are all unpacked and
   that the final configuration is valid. */
bool pkgPackageManager::ConfigureAll()
{
   pkgOrderList OList(Cache);
   
   // Populate the order list
   for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
      if (List->IsFlag(pkgCache::PkgIterator(Cache,*I),
		       pkgOrderList::UnPacked) == true)
	 OList.push_back(*I);
   
   if (OList.OrderConfigure() == false)
      return false;
   
   // Perform the configuring
   for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); I++)
   {
      PkgIterator Pkg(Cache,*I);
      
      if (Configure(Pkg) == false)
	 return false;
      
      List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
   }
   
   return true;
}
									/*}}}*/
// PM::SmartConfigure - Perform immediate configuration of the pkg	/*{{{*/
// ---------------------------------------------------------------------
/* This routine scheduals the configuration of the given package and all
   of it's dependents. */
bool pkgPackageManager::SmartConfigure(PkgIterator Pkg)
{
   pkgOrderList OList(Cache);

   if (DepAdd(OList,Pkg) == false)
      return false;
   
   if (OList.OrderConfigure() == false)
      return false;

   // Perform the configuring
   for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); I++)
   {
      PkgIterator Pkg(Cache,*I);
      
      if (Configure(Pkg) == false)
	 return false;
      
      List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
   }

   // Sanity Check
   if (List->IsFlag(Pkg,pkgOrderList::Configured) == false)
      return _error->Error("Internal error, could not immediate configure %s",Pkg.Name());
   
   return true;
}
									/*}}}*/
// PM::DepAdd - Add all dependents to the oder list			/*{{{*/
// ---------------------------------------------------------------------
/* This recursively adds all dependents to the order list */
bool pkgPackageManager::DepAdd(pkgOrderList &OList,PkgIterator Pkg,int Depth)
{
   if (OList.IsFlag(Pkg,pkgOrderList::Added) == true)
      return true;
   if (List->IsFlag(Pkg,pkgOrderList::Configured) == true)
      return true;
   if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == false)
      return false;
   
   
   // Put the package on the list
   OList.push_back(Pkg);
   OList.Flag(Pkg,pkgOrderList::Added);
   Depth++;

   // Check the dependencies to see if they are all satisfied.
   bool Bad = false;
   for (DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList(); D.end() == false;)
   {
      if (D->Type != pkgCache::Dep::Depends && D->Type != pkgCache::Dep::PreDepends)
      {
	 D++;
	 continue;
      }
      
      // Grok or groups
      Bad = true;
      for (bool LastOR = true; D.end() == false && LastOR == true; D++)
      {
	 LastOR = (D->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or;
	 
	 if (Bad == false)
	    continue;

	 Version **VList = D.AllTargets();
	 for (Version **I = VList; *I != 0 && Bad == true; I++)
	 {
	    VerIterator Ver(Cache,*I);
	    PkgIterator Pkg = Ver.ParentPkg();

	    // See if the current version is ok
	    if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true && 
		Pkg.State() == PkgIterator::NeedsNothing)
	    {
	       Bad = false;
	       continue;
	    }
	    
	    // Not the install version 
	    if (Cache[Pkg].InstallVer != *I || 
		(Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
	       continue;
	    if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == true)
	       Bad = !DepAdd(OList,Pkg,Depth);
	    if (List->IsFlag(Pkg,pkgOrderList::Configured) == true)
	       Bad = false;
	 }
	 delete [] VList;
      }
      
      if (Bad == true)
      {
	 OList.Flag(Pkg,0,pkgOrderList::Added);
	 OList.pop_back();
	 Depth--;
	 return false;
      }
   }
   
   Depth--;
   return true;
}
									/*}}}*/
// PM::EarlyRemove - Perform removal of packages before their time	/*{{{*/
// ---------------------------------------------------------------------
/* This is called to deal with conflicts arising from unpacking */
bool pkgPackageManager::EarlyRemove(PkgIterator Pkg)
{
   if (List->IsNow(Pkg) == false)
      return true;
	 
   // Already removed it
   if (List->IsFlag(Pkg,pkgOrderList::Removed) == true)
      return true;
   
   // Woops, it will not be re-installed!
   if (List->IsFlag(Pkg,pkgOrderList::InList) == false)
      return false;
   
   bool Res = SmartRemove(Pkg);
   if (Cache[Pkg].Delete() == false)
      List->Flag(Pkg,pkgOrderList::Removed,pkgOrderList::States);
   
   return Res;
}
									/*}}}*/
// PM::SmartRemove - Removal Helper					/*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgPackageManager::SmartRemove(PkgIterator Pkg)
{
   if (List->IsNow(Pkg) == false)
      return true;

   List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
   return Remove(Pkg,(Cache[Pkg].iFlags & pkgDepCache::Purge) == pkgDepCache::Purge);
}
									/*}}}*/
// PM::SmartUnPack - Install helper					/*{{{*/
// ---------------------------------------------------------------------
/* This performs the task of handling pre-depends. */
bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
{
   // Check if it is already unpacked
   if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure &&
       Cache[Pkg].Keep() == true)
   {
      List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
      if (List->IsFlag(Pkg,pkgOrderList::Immediate) == true)
	 if (SmartConfigure(Pkg) == false)
	    return _error->Error("Internal Error, Could not perform immediate configuraton");
      return true;
   }

   /* See if this packages install version has any predependencies
      that are not met by 'now' packages. */
   for (DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList(); 
	D.end() == false; D++)
   {
      if (D->Type == pkgCache::Dep::PreDepends)
      {
	 // Look for possible ok targets.
	 Version **VList = D.AllTargets();
	 bool Bad = true;
	 for (Version **I = VList; *I != 0 && Bad == true; I++)
	 {
	    VerIterator Ver(Cache,*I);
	    PkgIterator Pkg = Ver.ParentPkg();
	    
	    // See if the current version is ok
	    if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true && 
		Pkg.State() == PkgIterator::NeedsNothing)
	    {
	       Bad = false;
	       continue;
	    }
	 }
	 
	 // Look for something that could be configured.
	 for (Version **I = VList; *I != 0 && Bad == true; I++)
	 {
	    VerIterator Ver(Cache,*I);
	    PkgIterator Pkg = Ver.ParentPkg();
	    
	    // Not the install version 
	    if (Cache[Pkg].InstallVer != *I || 
		(Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
	       continue;

	    Bad = !SmartConfigure(Pkg);
	 }
	 
	 delete [] VList;
	 
	 if (Bad == true)
	    return _error->Error("Internal Error, Couldn't configure a pre-depend");

	 continue;
      }
      
      if (D->Type == pkgCache::Dep::Conflicts)
      {
	 /* Look for conflicts. Two packages that are both in the install
	    state cannot conflict so we don't check.. */
	 Version **VList = D.AllTargets();
	 for (Version **I = VList; *I != 0; I++)
	 {
	    VerIterator Ver(Cache,*I);
	    PkgIterator Pkg = Ver.ParentPkg();
	    
	    // See if the current version is conflicting
	    if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true)
	    {
	       if (EarlyRemove(Pkg) == false)
		  return _error->Error("Internal Error, Could not early remove %s",Pkg.Name());
	    }
	 }
	 delete [] VList;
      }
   }

   // Check for reverse conflicts.
   CheckRConflicts(Pkg,Pkg.RevDependsList(),
		   Cache[Pkg].InstVerIter(Cache).VerStr());
   for (PrvIterator P = Cache[Pkg].InstVerIter(Cache).ProvidesList(); 
	P.end() == false; P++)
      CheckRConflicts(Pkg,P.ParentPkg().RevDependsList(),P.ProvideVersion());
   
   if (Install(Pkg,FileNames[Pkg->ID]) == false)
      return false;
   
   List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
   
   // Perform immedate configuration of the package.
   if (List->IsFlag(Pkg,pkgOrderList::Immediate) == true)
      if (SmartConfigure(Pkg) == false)
	 return _error->Error("Internal Error, Could not perform immediate configuraton");
   
   return true;
}
									/*}}}*/
// PM::OrderInstall - Installation ordering routine			/*{{{*/
// ---------------------------------------------------------------------
/* */
pkgPackageManager::OrderResult pkgPackageManager::OrderInstall()
{
   if (CreateOrderList() == false)
      return Failed;

   Reset();
   
   if (Debug == true)
      clog << "Begining to order" << endl;

   if (List->OrderUnpack(FileNames) == false)
   {
      _error->Error("Internal ordering error");
      return Failed;
   }
   
   if (Debug == true)
      clog << "Done ordering" << endl;

   bool DoneSomething = false;
   for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
   {
      PkgIterator Pkg(Cache,*I);

      if (List->IsNow(Pkg) == false)
      {
	 if (Debug == true)
	    clog << "Skipping already done " << Pkg.Name() << endl;
	 continue;
      }
      
      if (List->IsMissing(Pkg) == true)
      {
	 if (Debug == true)
	    clog << "Sequence completed at" << Pkg.Name() << endl;
	 if (DoneSomething == false)
	 {
	    _error->Error("Internal Error, ordering was unable to handle the media swap");
	    return Failed;
	 }	 
	 return Incomplete;
      }
      
      // Sanity check
      if (Cache[Pkg].Keep() == true && Pkg.State() == pkgCache::PkgIterator::NeedsNothing)
      {
	 _error->Error("Internal Error, trying to manipulate a kept package");
	 return Failed;
      }
      
      // Perform a delete or an install
      if (Cache[Pkg].Delete() == true)
      {
	 if (SmartRemove(Pkg) == false)
	    return Failed;
      }
      else
	 if (SmartUnPack(Pkg) == false)
	    return Failed;
      DoneSomething = true;
   }
   
   // Final run through the configure phase
   if (ConfigureAll() == false)
      return Failed;

   // Sanity check
   for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
   {
      if (List->IsFlag(*I,pkgOrderList::Configured) == false)
      {
	 _error->Error("Internal error, packages left unconfigured. %s",
		       PkgIterator(Cache,*I).Name());
	 return Failed;
      }
   }   
	 
   return Completed;
}
									/*}}}*/
// PM::DoInstall - Does the installation				/*{{{*/
// ---------------------------------------------------------------------
/* This uses the filenames in FileNames and the information in the
   DepCache to perform the installation of packages.*/
pkgPackageManager::OrderResult pkgPackageManager::DoInstall()
{
   OrderResult Res = OrderInstall();
   if (Res != Failed)
      if (Go() == false)
	 return Failed;
   return Res;
}
									/*}}}*/
Commit	Line	Data
6c139d6e AL	1	// -- mode: cpp; mode: fold --
6c139d6e AL	2	// Description /{{{/
d556d1a1	3	// $Id: packagemanager.cc,v 1.18 1999/07/10 04:58:42 jgg Exp $
6c139d6e AL	4	/* ######################################################################
	5
	6	Package Manager - Abstacts the package manager
	7
	8	More work is needed in the area of transitioning provides, ie exim
	9	replacing smail. This can cause interesing side effects.
	10
	11	Other cases involving conflicts+replaces should be tested.
	12
	13	##################################################################### */
	14	/}}}/
	15	// Include Files /{{{/
	16	#ifdef __GNUG__
094a497d	17	#pragma implementation "apt-pkg/packagemanager.h"
6c139d6e	18	#endif
094a497d AL	19	#include <apt-pkg/packagemanager.h>
	20	#include <apt-pkg/orderlist.h>
	21	#include <apt-pkg/depcache.h>
	22	#include <apt-pkg/error.h>
	23	#include <apt-pkg/version.h>
03e39e59	24	#include <apt-pkg/acquire-item.h>
30e1eab5 AL	25	#include <apt-pkg/algorithms.h>
30e1eab5 AL	26	#include <apt-pkg/configuration.h>
6c139d6e AL	27	/}}}/
	28
	29	// PM::PackageManager - Constructor /{{{/
	30	// ---------------------------------------------------------------------
	31	/* */
	32	pkgPackageManager::pkgPackageManager(pkgDepCache &Cache) : Cache(Cache)
	33	{
	34	FileNames = new string[Cache.Head().PackageCount];
	35	List = 0;
30e1eab5	36	Debug = _config->FindB("Debug::pkgPackageManager",false);
6c139d6e AL	37	}
	38	/}}}/
	39	// PM::PackageManager - Destructor /{{{/
	40	// ---------------------------------------------------------------------
	41	/* */
	42	pkgPackageManager::~pkgPackageManager()
	43	{
	44	delete List;
	45	delete [] FileNames;
	46	}
	47	/}}}/
03e39e59 AL	48	// PM::GetArchives - Queue the archives for download /{{{/
	49	// ---------------------------------------------------------------------
	50	/* */
	51	bool pkgPackageManager::GetArchives(pkgAcquire Owner,pkgSourceList Sources,
	52	pkgRecords *Recs)
	53	{
7a1b1f8b AL	54	if (CreateOrderList() == false)
	55	return false;
	56
	57	if (List->OrderUnpack() == false)
	58	return _error->Error("Internal ordering error");
	59
	60	for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
	61	{
	62	PkgIterator Pkg(Cache,*I);
281daf46 AL	63	FileNames[Pkg->ID] = string();
281daf46 AL	64
7a1b1f8b AL	65	// Skip packages to erase
7a1b1f8b AL	66	if (Cache[Pkg].Delete() == true)
03e39e59	67	continue;
d38b7b3d AL	68
d38b7b3d AL	69	// Skip Packages that need configure only.
9dbb421f AL	70	if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure &&
9dbb421f AL	71	Cache[Pkg].Keep() == true)
d38b7b3d	72	continue;
281daf46 AL	73
	74	// Skip already processed packages
	75	if (List->IsNow(Pkg) == false)
	76	continue;
	77
7a1b1f8b AL	78	new pkgAcqArchive(Owner,Sources,Recs,Cache[Pkg].InstVerIter(Cache),
7a1b1f8b AL	79	FileNames[Pkg->ID]);
03e39e59	80	}
7a1b1f8b	81
03e39e59 AL	82	return true;
	83	}
	84	/}}}/
6c139d6e AL	85	// PM::FixMissing - Keep all missing packages /{{{/
	86	// ---------------------------------------------------------------------
	87	/* This is called to correct the installation when packages could not
	88	be downloaded. */
	89	bool pkgPackageManager::FixMissing()
	90	{
30e1eab5	91	pkgProblemResolver Resolve(Cache);
2fd65468 AL	92	List->SetFileList(FileNames);
2fd65468 AL	93
9dbb421f	94	bool Bad = false;
6c139d6e AL	95	for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
6c139d6e AL	96	{
2fd65468	97	if (List->IsMissing(I) == false)
9dbb421f	98	continue;
2fd65468	99
9dbb421f AL	100	// Okay, this file is missing and we need it. Mark it for keep
9dbb421f AL	101	Bad = true;
6c139d6e AL	102	Cache.MarkKeep(I);
	103	}
	104
9dbb421f AL	105	if (Bad == false)
	106	return true;
	107
6c139d6e	108	// Now downgrade everything that is broken
30e1eab5	109	return Resolve.ResolveByKeep() == true && Cache.BrokenCount() == 0;
6c139d6e AL	110	}
	111	/}}}/
	112
7a1b1f8b AL	113	// PM::CreateOrderList - Create the ordering class /{{{/
	114	// ---------------------------------------------------------------------
	115	/* This populates the ordering list with all the packages that are
	116	going to change. */
	117	bool pkgPackageManager::CreateOrderList()
	118	{
281daf46 AL	119	if (List != 0)
	120	return true;
	121
7a1b1f8b AL	122	delete List;
	123	List = new pkgOrderList(Cache);
	124
b780bc1b	125	bool NoImmConfigure = _config->FindB("APT::Immediate-Configure",false);
079cc404	126
7a1b1f8b AL	127	// Generate the list of affected packages and sort it
	128	for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
	129	{
138d4b3d AL	130	// Mark the package and its dependends for immediate configuration
	131	if (((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential \|\|
	132	(I->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important) &&
079cc404	133	NoImmConfigure == false)
7a1b1f8b AL	134	{
7a1b1f8b AL	135	List->Flag(I,pkgOrderList::Immediate);
d38b7b3d AL	136
d38b7b3d AL	137	// Look for other packages to make immediate configurea
7a1b1f8b AL	138	if (Cache[I].InstallVer != 0)
	139	for (DepIterator D = Cache[I].InstVerIter(Cache).DependsList();
	140	D.end() == false; D++)
	141	if (D->Type == pkgCache::Dep::Depends \|\| D->Type == pkgCache::Dep::PreDepends)
	142	List->Flag(D.TargetPkg(),pkgOrderList::Immediate);
d38b7b3d AL	143
d38b7b3d AL	144	// And again with the current version.
7a1b1f8b AL	145	if (I->CurrentVer != 0)
	146	for (DepIterator D = I.CurrentVer().DependsList();
	147	D.end() == false; D++)
	148	if (D->Type == pkgCache::Dep::Depends \|\| D->Type == pkgCache::Dep::PreDepends)
	149	List->Flag(D.TargetPkg(),pkgOrderList::Immediate);
	150	}
	151
	152	// Not interesting
	153	if ((Cache[I].Keep() == true \|\|
	154	Cache[I].InstVerIter(Cache) == I.CurrentVer()) &&
d556d1a1 AL	155	I.State() == pkgCache::PkgIterator::NeedsNothing &&
	156	(I.Purge() != false \|\| Cache[I].Mode != pkgDepCache::ModeDelete \|\|
	157	(Cache[I].iFlags & pkgDepCache::Purge) != pkgDepCache::Purge))
7a1b1f8b AL	158	continue;
	159
	160	// Append it to the list
138d4b3d	161	List->push_back(I);
7a1b1f8b AL	162	}
	163
	164	return true;
	165	}
	166	/}}}/
6c139d6e AL	167	// PM::DepAlwaysTrue - Returns true if this dep is irrelevent /{{{/
	168	// ---------------------------------------------------------------------
	169	/* The restriction on provides is to eliminate the case when provides
	170	are transitioning between valid states [ie exim to smail] */
	171	bool pkgPackageManager::DepAlwaysTrue(DepIterator D)
	172	{
	173	if (D.TargetPkg()->ProvidesList != 0)
	174	return false;
	175
	176	if ((Cache[D] & pkgDepCache::DepInstall) != 0 &&
	177	(Cache[D] & pkgDepCache::DepNow) != 0)
	178	return true;
	179	return false;
	180	}
	181	/}}}/
	182	// PM::CheckRConflicts - Look for reverse conflicts /{{{/
	183	// ---------------------------------------------------------------------
	184	/* This looks over the reverses for a conflicts line that needs early
	185	removal. */
	186	bool pkgPackageManager::CheckRConflicts(PkgIterator Pkg,DepIterator D,
	187	const char *Ver)
	188	{
	189	for (;D.end() == false; D++)
	190	{
b50b2c97	191	if (D->Type != pkgCache::Dep::Conflicts)
6c139d6e AL	192	continue;
	193
	194	if (D.ParentPkg() == Pkg)
	195	continue;
	196
	197	if (pkgCheckDep(D.TargetVer(),Ver,D->CompareOp) == false)
	198	continue;
	199
	200	if (List->IsNow(Pkg) == false)
	201	continue;
	202
	203	if (EarlyRemove(D.ParentPkg()) == false)
	204	return false;
	205	}
	206	return true;
	207	}
	208	/}}}/
	209	// PM::ConfigureAll - Run the all out configuration /{{{/
	210	// ---------------------------------------------------------------------
	211	/* This configures every package. It is assumed they are all unpacked and
	212	that the final configuration is valid. */
	213	bool pkgPackageManager::ConfigureAll()
	214	{
	215	pkgOrderList OList(Cache);
	216
	217	// Populate the order list
	218	for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
	219	if (List->IsFlag(pkgCache::PkgIterator(Cache,*I),
	220	pkgOrderList::UnPacked) == true)
	221	OList.push_back(*I);
	222
	223	if (OList.OrderConfigure() == false)
	224	return false;
	225
	226	// Perform the configuring
	227	for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); I++)
	228	{
	229	PkgIterator Pkg(Cache,*I);
	230
	231	if (Configure(Pkg) == false)
	232	return false;
	233
	234	List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
	235	}
	236
	237	return true;
	238	}
	239	/}}}/
	240	// PM::SmartConfigure - Perform immediate configuration of the pkg /{{{/
	241	// ---------------------------------------------------------------------
	242	/* This routine scheduals the configuration of the given package and all
	243	of it's dependents. */
	244	bool pkgPackageManager::SmartConfigure(PkgIterator Pkg)
	245	{
	246	pkgOrderList OList(Cache);
	247
	248	if (DepAdd(OList,Pkg) == false)
	249	return false;
	250
	251	if (OList.OrderConfigure() == false)
	252	return false;
	253
	254	// Perform the configuring
	255	for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); I++)
256	{
257	PkgIterator Pkg(Cache,*I);
258
259	if (Configure(Pkg) == false)
260	return false;
261
262	List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
263	}
264
265	// Sanity Check
266	if (List->IsFlag(Pkg,pkgOrderList::Configured) == false)
267	return _error->Error("Internal error, could not immediate configure %s",Pkg.Name());
268
269	return true;
270	}
271	/}}}/
272	// PM::DepAdd - Add all dependents to the oder list /{{{/
273	// ---------------------------------------------------------------------
274	/* This recursively adds all dependents to the order list */
275	bool pkgPackageManager::DepAdd(pkgOrderList &OList,PkgIterator Pkg,int Depth)
276	{
277	if (OList.IsFlag(Pkg,pkgOrderList::Added) == true)
278	return true;
279	if (List->IsFlag(Pkg,pkgOrderList::Configured) == true)
280	return true;
281	if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == false)
282	return false;
283
284
285	// Put the package on the list
286	OList.push_back(Pkg);
287	OList.Flag(Pkg,pkgOrderList::Added);
288	Depth++;
289
290	// Check the dependencies to see if they are all satisfied.
291	bool Bad = false;
292	for (DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList(); D.end() == false;)
293	{
b50b2c97	294	if (D->Type != pkgCache::Dep::Depends && D->Type != pkgCache::Dep::PreDepends)
6c139d6e AL	295	{
	296	D++;
	297	continue;
	298	}
	299
	300	// Grok or groups
	301	Bad = true;
	302	for (bool LastOR = true; D.end() == false && LastOR == true; D++)
	303	{
b50b2c97	304	LastOR = (D->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or;
6c139d6e AL	305
	306	if (Bad == false)
	307	continue;
	308
	309	Version **VList = D.AllTargets();
	310	for (Version *I = VList; I != 0 && Bad == true; I++)
	311	{
	312	VerIterator Ver(Cache,*I);
	313	PkgIterator Pkg = Ver.ParentPkg();
	314
	315	// See if the current version is ok
	316	if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true &&
	317	Pkg.State() == PkgIterator::NeedsNothing)
	318	{
	319	Bad = false;
	320	continue;
	321	}
	322
	323	// Not the install version
	324	if (Cache[Pkg].InstallVer != *I \|\|
	325	(Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
	326	continue;
	327	if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == true)
	328	Bad = !DepAdd(OList,Pkg,Depth);
	329	if (List->IsFlag(Pkg,pkgOrderList::Configured) == true)
	330	Bad = false;
	331	}
	332	delete [] VList;
	333	}
	334
	335	if (Bad == true)
	336	{
	337	OList.Flag(Pkg,0,pkgOrderList::Added);
	338	OList.pop_back();
	339	Depth--;
	340	return false;
	341	}
	342	}
	343
	344	Depth--;
	345	return true;
	346	}
	347	/}}}/
	348	// PM::EarlyRemove - Perform removal of packages before their time /{{{/
	349	// ---------------------------------------------------------------------
	350	/* This is called to deal with conflicts arising from unpacking */
	351	bool pkgPackageManager::EarlyRemove(PkgIterator Pkg)
	352	{
	353	if (List->IsNow(Pkg) == false)
	354	return true;
	355
	356	// Already removed it
	357	if (List->IsFlag(Pkg,pkgOrderList::Removed) == true)
	358	return true;
	359
	360	// Woops, it will not be re-installed!
	361	if (List->IsFlag(Pkg,pkgOrderList::InList) == false)
	362	return false;
	363
	364	bool Res = SmartRemove(Pkg);
	365	if (Cache[Pkg].Delete() == false)
	366	List->Flag(Pkg,pkgOrderList::Removed,pkgOrderList::States);
	367
	368	return Res;
369	}
370	/}}}/
371	// PM::SmartRemove - Removal Helper /{{{/
372	// ---------------------------------------------------------------------
373	/* */
374	bool pkgPackageManager::SmartRemove(PkgIterator Pkg)
375	{
376	if (List->IsNow(Pkg) == false)
377	return true;
378
379	List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
fc4b5c9f	380	return Remove(Pkg,(Cache[Pkg].iFlags & pkgDepCache::Purge) == pkgDepCache::Purge);
6c139d6e AL	381	}
	382	/}}}/
	383	// PM::SmartUnPack - Install helper /{{{/
	384	// ---------------------------------------------------------------------
	385	/* This performs the task of handling pre-depends. */
	386	bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
	387	{
	388	// Check if it is already unpacked
	389	if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure &&
	390	Cache[Pkg].Keep() == true)
	391	{
	392	List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
	393	if (List->IsFlag(Pkg,pkgOrderList::Immediate) == true)
	394	if (SmartConfigure(Pkg) == false)
	395	return _error->Error("Internal Error, Could not perform immediate configuraton");
	396	return true;
	397	}
981d20eb	398
6c139d6e AL	399	/* See if this packages install version has any predependencies
	400	that are not met by 'now' packages. */
	401	for (DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList();
	402	D.end() == false; D++)
	403	{
b50b2c97	404	if (D->Type == pkgCache::Dep::PreDepends)
6c139d6e AL	405	{
	406	// Look for possible ok targets.
	407	Version **VList = D.AllTargets();
	408	bool Bad = true;
	409	for (Version *I = VList; I != 0 && Bad == true; I++)
	410	{
	411	VerIterator Ver(Cache,*I);
	412	PkgIterator Pkg = Ver.ParentPkg();
	413
	414	// See if the current version is ok
	415	if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true &&
	416	Pkg.State() == PkgIterator::NeedsNothing)
	417	{
	418	Bad = false;
	419	continue;
	420	}
	421	}
	422
	423	// Look for something that could be configured.
	424	for (Version *I = VList; I != 0 && Bad == true; I++)
	425	{
	426	VerIterator Ver(Cache,*I);
	427	PkgIterator Pkg = Ver.ParentPkg();
	428
	429	// Not the install version
	430	if (Cache[Pkg].InstallVer != *I \|\|
	431	(Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
	432	continue;
	433
	434	Bad = !SmartConfigure(Pkg);
	435	}
	436
	437	delete [] VList;
	438
	439	if (Bad == true)
	440	return _error->Error("Internal Error, Couldn't configure a pre-depend");
	441
	442	continue;
	443	}
	444
b50b2c97	445	if (D->Type == pkgCache::Dep::Conflicts)
6c139d6e AL	446	{
	447	/* Look for conflicts. Two packages that are both in the install
	448	state cannot conflict so we don't check.. */
	449	Version **VList = D.AllTargets();
	450	for (Version *I = VList; I != 0; I++)
	451	{
	452	VerIterator Ver(Cache,*I);
	453	PkgIterator Pkg = Ver.ParentPkg();
	454
	455	// See if the current version is conflicting
	456	if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true)
	457	{
	458	if (EarlyRemove(Pkg) == false)
	459	return _error->Error("Internal Error, Could not early remove %s",Pkg.Name());
	460	}
	461	}
	462	delete [] VList;
	463	}
	464	}
	465
	466	// Check for reverse conflicts.
	467	CheckRConflicts(Pkg,Pkg.RevDependsList(),
	468	Cache[Pkg].InstVerIter(Cache).VerStr());
	469	for (PrvIterator P = Cache[Pkg].InstVerIter(Cache).ProvidesList();
	470	P.end() == false; P++)
	471	CheckRConflicts(Pkg,P.ParentPkg().RevDependsList(),P.ProvideVersion());
	472
	473	if (Install(Pkg,FileNames[Pkg->ID]) == false)
	474	return false;
	475
	476	List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
	477
	478	// Perform immedate configuration of the package.
	479	if (List->IsFlag(Pkg,pkgOrderList::Immediate) == true)
	480	if (SmartConfigure(Pkg) == false)
	481	return _error->Error("Internal Error, Could not perform immediate configuraton");
	482
	483	return true;
	484	}
	485	/}}}/
	486	// PM::OrderInstall - Installation ordering routine /{{{/
	487	// ---------------------------------------------------------------------
	488	/* */
281daf46	489	pkgPackageManager::OrderResult pkgPackageManager::OrderInstall()
6c139d6e	490	{
7a1b1f8b	491	if (CreateOrderList() == false)
281daf46 AL	492	return Failed;
	493
	494	Reset();
6c139d6e	495
30e1eab5 AL	496	if (Debug == true)
30e1eab5 AL	497	clog << "Begining to order" << endl;
6c139d6e	498
281daf46 AL	499	if (List->OrderUnpack(FileNames) == false)
	500	{
	501	_error->Error("Internal ordering error");
	502	return Failed;
	503	}
	504
30e1eab5 AL	505	if (Debug == true)
	506	clog << "Done ordering" << endl;
	507
281daf46	508	bool DoneSomething = false;
6c139d6e AL	509	for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
	510	{
	511	PkgIterator Pkg(Cache,*I);
281daf46 AL	512
	513	if (List->IsNow(Pkg) == false)
	514	{
	515	if (Debug == true)
	516	clog << "Skipping already done " << Pkg.Name() << endl;
	517	continue;
	518	}
	519
2fd65468	520	if (List->IsMissing(Pkg) == true)
281daf46 AL	521	{
	522	if (Debug == true)
	523	clog << "Sequence completed at" << Pkg.Name() << endl;
	524	if (DoneSomething == false)
	525	{
	526	_error->Error("Internal Error, ordering was unable to handle the media swap");
	527	return Failed;
	528	}
	529	return Incomplete;
	530	}
6c139d6e AL	531
	532	// Sanity check
	533	if (Cache[Pkg].Keep() == true && Pkg.State() == pkgCache::PkgIterator::NeedsNothing)
281daf46 AL	534	{
	535	_error->Error("Internal Error, trying to manipulate a kept package");
	536	return Failed;
	537	}
6c139d6e AL	538
	539	// Perform a delete or an install
	540	if (Cache[Pkg].Delete() == true)
	541	{
	542	if (SmartRemove(Pkg) == false)
281daf46	543	return Failed;
6c139d6e AL	544	}
	545	else
	546	if (SmartUnPack(Pkg) == false)
281daf46 AL	547	return Failed;
281daf46 AL	548	DoneSomething = true;
6c139d6e AL	549	}
	550
	551	// Final run through the configure phase
	552	if (ConfigureAll() == false)
281daf46	553	return Failed;
6c139d6e AL	554
	555	// Sanity check
	556	for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
281daf46	557	{
6c139d6e	558	if (List->IsFlag(*I,pkgOrderList::Configured) == false)
281daf46 AL	559	{
	560	_error->Error("Internal error, packages left unconfigured. %s",
	561	PkgIterator(Cache,*I).Name());
	562	return Failed;
	563	}
	564	}
	565
	566	return Completed;
6c139d6e AL	567	}
	568	/}}}/
	569	// PM::DoInstall - Does the installation /{{{/
	570	// ---------------------------------------------------------------------
	571	/* This uses the filenames in FileNames and the information in the
	572	DepCache to perform the installation of packages.*/
281daf46	573	pkgPackageManager::OrderResult pkgPackageManager::DoInstall()
6c139d6e	574	{
281daf46 AL	575	OrderResult Res = OrderInstall();
	576	if (Res != Failed)
	577	if (Go() == false)
	578	return Failed;
	579	return Res;
6c139d6e AL	580	}
6c139d6e AL	581	/}}}/