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

// -*- mode: cpp; mode: fold -*-
// Description								/*{{{*/
// $Id: packagemanager.cc,v 1.21 1999/09/30 06:30:34 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);
   }
 
   // We have to empty the list otherwise it will not have the new changes
   delete List;
   List = 0;
   
   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;

   // Essential packages get special treatment
   if ((Pkg->Flags & pkgCache::Flag::Essential) != 0)
   {
      if (_config->FindB("APT::Force-LoopBreak",false) == false)
	 return _error->Error("This installation run will require temporarily "
			      "removing the essential package %s due to a "
			      "Conflicts/Pre-Depends loop. This is often bad, "
			      "but if you really want to do it, activate the "
			      "APT::Force-LoopBreak option.",Pkg.Name());
   }
   
   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; )
   {
      // Compute a single dependency element (glob or)
      pkgCache::DepIterator Start;
      pkgCache::DepIterator End;
      D.GlobOr(Start,End);
      
      while (End->Type == pkgCache::Dep::PreDepends)
      {
	 // Look for possible ok targets.
	 Version **VList = Start.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 this or element did not match then continue on to the
	    next or element until a matching element is found*/
	 if (Bad == true)
	 {	    
	    if (Start == End)
	       return _error->Error("Internal Error, Couldn't configure a pre-depend");
	    Start++;
	 }
	 else
	    break;
      }
      
      if (End->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 = End.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 /{{{/
421c8d10	3	// $Id: packagemanager.cc,v 1.21 1999/09/30 06:30:34 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()
bdae53f1	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);
6c139d6e AL	103	}
bdae53f1 AL	104
	105	// We have to empty the list otherwise it will not have the new changes
	106	delete List;
	107	List = 0;
6c139d6e	108
9dbb421f AL	109	if (Bad == false)
	110	return true;
	111
6c139d6e	112	// Now downgrade everything that is broken
30e1eab5	113	return Resolve.ResolveByKeep() == true && Cache.BrokenCount() == 0;
6c139d6e AL	114	}
	115	/}}}/
	116
7a1b1f8b AL	117	// PM::CreateOrderList - Create the ordering class /{{{/
	118	// ---------------------------------------------------------------------
	119	/* This populates the ordering list with all the packages that are
	120	going to change. */
	121	bool pkgPackageManager::CreateOrderList()
	122	{
281daf46 AL	123	if (List != 0)
	124	return true;
	125
7a1b1f8b AL	126	delete List;
	127	List = new pkgOrderList(Cache);
	128
b780bc1b	129	bool NoImmConfigure = _config->FindB("APT::Immediate-Configure",false);
079cc404	130
7a1b1f8b AL	131	// Generate the list of affected packages and sort it
	132	for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
	133	{
138d4b3d AL	134	// Mark the package and its dependends for immediate configuration
	135	if (((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential \|\|
	136	(I->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important) &&
079cc404	137	NoImmConfigure == false)
7a1b1f8b AL	138	{
7a1b1f8b AL	139	List->Flag(I,pkgOrderList::Immediate);
d38b7b3d AL	140
d38b7b3d AL	141	// Look for other packages to make immediate configurea
7a1b1f8b AL	142	if (Cache[I].InstallVer != 0)
	143	for (DepIterator D = Cache[I].InstVerIter(Cache).DependsList();
	144	D.end() == false; D++)
	145	if (D->Type == pkgCache::Dep::Depends \|\| D->Type == pkgCache::Dep::PreDepends)
	146	List->Flag(D.TargetPkg(),pkgOrderList::Immediate);
d38b7b3d AL	147
d38b7b3d AL	148	// And again with the current version.
7a1b1f8b AL	149	if (I->CurrentVer != 0)
	150	for (DepIterator D = I.CurrentVer().DependsList();
	151	D.end() == false; D++)
	152	if (D->Type == pkgCache::Dep::Depends \|\| D->Type == pkgCache::Dep::PreDepends)
	153	List->Flag(D.TargetPkg(),pkgOrderList::Immediate);
	154	}
	155
	156	// Not interesting
	157	if ((Cache[I].Keep() == true \|\|
	158	Cache[I].InstVerIter(Cache) == I.CurrentVer()) &&
d556d1a1 AL	159	I.State() == pkgCache::PkgIterator::NeedsNothing &&
	160	(I.Purge() != false \|\| Cache[I].Mode != pkgDepCache::ModeDelete \|\|
	161	(Cache[I].iFlags & pkgDepCache::Purge) != pkgDepCache::Purge))
7a1b1f8b AL	162	continue;
	163
	164	// Append it to the list
138d4b3d	165	List->push_back(I);
7a1b1f8b AL	166	}
	167
	168	return true;
	169	}
	170	/}}}/
6c139d6e AL	171	// PM::DepAlwaysTrue - Returns true if this dep is irrelevent /{{{/
	172	// ---------------------------------------------------------------------
	173	/* The restriction on provides is to eliminate the case when provides
	174	are transitioning between valid states [ie exim to smail] */
	175	bool pkgPackageManager::DepAlwaysTrue(DepIterator D)
	176	{
	177	if (D.TargetPkg()->ProvidesList != 0)
	178	return false;
	179
	180	if ((Cache[D] & pkgDepCache::DepInstall) != 0 &&
	181	(Cache[D] & pkgDepCache::DepNow) != 0)
	182	return true;
	183	return false;
	184	}
	185	/}}}/
	186	// PM::CheckRConflicts - Look for reverse conflicts /{{{/
	187	// ---------------------------------------------------------------------
	188	/* This looks over the reverses for a conflicts line that needs early
	189	removal. */
	190	bool pkgPackageManager::CheckRConflicts(PkgIterator Pkg,DepIterator D,
	191	const char *Ver)
	192	{
	193	for (;D.end() == false; D++)
	194	{
b50b2c97	195	if (D->Type != pkgCache::Dep::Conflicts)
6c139d6e AL	196	continue;
	197
	198	if (D.ParentPkg() == Pkg)
	199	continue;
	200
	201	if (pkgCheckDep(D.TargetVer(),Ver,D->CompareOp) == false)
	202	continue;
	203
	204	if (List->IsNow(Pkg) == false)
	205	continue;
	206
	207	if (EarlyRemove(D.ParentPkg()) == false)
	208	return false;
	209	}
	210	return true;
	211	}
	212	/}}}/
	213	// PM::ConfigureAll - Run the all out configuration /{{{/
	214	// ---------------------------------------------------------------------
	215	/* This configures every package. It is assumed they are all unpacked and
	216	that the final configuration is valid. */
	217	bool pkgPackageManager::ConfigureAll()
	218	{
	219	pkgOrderList OList(Cache);
	220
	221	// Populate the order list
	222	for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
	223	if (List->IsFlag(pkgCache::PkgIterator(Cache,*I),
	224	pkgOrderList::UnPacked) == true)
	225	OList.push_back(*I);
	226
	227	if (OList.OrderConfigure() == false)
	228	return false;
	229
	230	// Perform the configuring
	231	for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); I++)
	232	{
	233	PkgIterator Pkg(Cache,*I);
	234
	235	if (Configure(Pkg) == false)
	236	return false;
	237
	238	List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
	239	}
	240
	241	return true;
	242	}
	243	/}}}/
	244	// PM::SmartConfigure - Perform immediate configuration of the pkg /{{{/
	245	// ---------------------------------------------------------------------
	246	/* This routine scheduals the configuration of the given package and all
	247	of it's dependents. */
	248	bool pkgPackageManager::SmartConfigure(PkgIterator Pkg)
	249	{
	250	pkgOrderList OList(Cache);
	251
	252	if (DepAdd(OList,Pkg) == false)
	253	return false;
	254
	255	if (OList.OrderConfigure() == false)
	256	return false;
	257
	258	// Perform the configuring
	259	for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); I++)
260	{
261	PkgIterator Pkg(Cache,*I);
262
263	if (Configure(Pkg) == false)
264	return false;
265
266	List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
267	}
268
269	// Sanity Check
270	if (List->IsFlag(Pkg,pkgOrderList::Configured) == false)
271	return _error->Error("Internal error, could not immediate configure %s",Pkg.Name());
272
273	return true;
274	}
275	/}}}/
276	// PM::DepAdd - Add all dependents to the oder list /{{{/
277	// ---------------------------------------------------------------------
278	/* This recursively adds all dependents to the order list */
279	bool pkgPackageManager::DepAdd(pkgOrderList &OList,PkgIterator Pkg,int Depth)
280	{
281	if (OList.IsFlag(Pkg,pkgOrderList::Added) == true)
282	return true;
283	if (List->IsFlag(Pkg,pkgOrderList::Configured) == true)
284	return true;
285	if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == false)
286	return false;
287
288
289	// Put the package on the list
290	OList.push_back(Pkg);
291	OList.Flag(Pkg,pkgOrderList::Added);
292	Depth++;
293
294	// Check the dependencies to see if they are all satisfied.
295	bool Bad = false;
296	for (DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList(); D.end() == false;)
297	{
b50b2c97	298	if (D->Type != pkgCache::Dep::Depends && D->Type != pkgCache::Dep::PreDepends)
6c139d6e AL	299	{
	300	D++;
	301	continue;
	302	}
	303
	304	// Grok or groups
	305	Bad = true;
	306	for (bool LastOR = true; D.end() == false && LastOR == true; D++)
	307	{
b50b2c97	308	LastOR = (D->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or;
6c139d6e AL	309
	310	if (Bad == false)
	311	continue;
	312
	313	Version **VList = D.AllTargets();
	314	for (Version *I = VList; I != 0 && Bad == true; I++)
	315	{
	316	VerIterator Ver(Cache,*I);
	317	PkgIterator Pkg = Ver.ParentPkg();
	318
	319	// See if the current version is ok
	320	if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true &&
	321	Pkg.State() == PkgIterator::NeedsNothing)
	322	{
	323	Bad = false;
	324	continue;
	325	}
	326
	327	// Not the install version
	328	if (Cache[Pkg].InstallVer != *I \|\|
	329	(Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
	330	continue;
	331	if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == true)
	332	Bad = !DepAdd(OList,Pkg,Depth);
	333	if (List->IsFlag(Pkg,pkgOrderList::Configured) == true)
	334	Bad = false;
	335	}
	336	delete [] VList;
	337	}
	338
	339	if (Bad == true)
	340	{
	341	OList.Flag(Pkg,0,pkgOrderList::Added);
	342	OList.pop_back();
	343	Depth--;
	344	return false;
	345	}
	346	}
	347
	348	Depth--;
	349	return true;
	350	}
	351	/}}}/
	352	// PM::EarlyRemove - Perform removal of packages before their time /{{{/
	353	// ---------------------------------------------------------------------
	354	/* This is called to deal with conflicts arising from unpacking */
	355	bool pkgPackageManager::EarlyRemove(PkgIterator Pkg)
	356	{
	357	if (List->IsNow(Pkg) == false)
	358	return true;
	359
	360	// Already removed it
	361	if (List->IsFlag(Pkg,pkgOrderList::Removed) == true)
	362	return true;
	363
	364	// Woops, it will not be re-installed!
	365	if (List->IsFlag(Pkg,pkgOrderList::InList) == false)
	366	return false;
9d4c8f67 AL	367
	368	// Essential packages get special treatment
	369	if ((Pkg->Flags & pkgCache::Flag::Essential) != 0)
	370	{
	371	if (_config->FindB("APT::Force-LoopBreak",false) == false)
	372	return _error->Error("This installation run will require temporarily "
	373	"removing the essential package %s due to a "
	374	"Conflicts/Pre-Depends loop. This is often bad, "
	375	"but if you really want to do it, activate the "
	376	"APT::Force-LoopBreak option.",Pkg.Name());
	377	}
6c139d6e AL	378
	379	bool Res = SmartRemove(Pkg);
	380	if (Cache[Pkg].Delete() == false)
	381	List->Flag(Pkg,pkgOrderList::Removed,pkgOrderList::States);
	382
	383	return Res;
	384	}
	385	/}}}/
	386	// PM::SmartRemove - Removal Helper /{{{/
	387	// ---------------------------------------------------------------------
	388	/* */
	389	bool pkgPackageManager::SmartRemove(PkgIterator Pkg)
	390	{
	391	if (List->IsNow(Pkg) == false)
	392	return true;
	393
	394	List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
fc4b5c9f	395	return Remove(Pkg,(Cache[Pkg].iFlags & pkgDepCache::Purge) == pkgDepCache::Purge);
6c139d6e AL	396	}
	397	/}}}/
	398	// PM::SmartUnPack - Install helper /{{{/
	399	// ---------------------------------------------------------------------
	400	/* This performs the task of handling pre-depends. */
	401	bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
	402	{
	403	// Check if it is already unpacked
	404	if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure &&
	405	Cache[Pkg].Keep() == true)
	406	{
	407	List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
	408	if (List->IsFlag(Pkg,pkgOrderList::Immediate) == true)
	409	if (SmartConfigure(Pkg) == false)
	410	return _error->Error("Internal Error, Could not perform immediate configuraton");
	411	return true;
	412	}
981d20eb	413
6c139d6e AL	414	/* See if this packages install version has any predependencies
	415	that are not met by 'now' packages. */
	416	for (DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList();
421c8d10	417	D.end() == false; )
6c139d6e	418	{
421c8d10 AL	419	// Compute a single dependency element (glob or)
	420	pkgCache::DepIterator Start;
	421	pkgCache::DepIterator End;
	422	D.GlobOr(Start,End);
	423
	424	while (End->Type == pkgCache::Dep::PreDepends)
6c139d6e AL	425	{
6c139d6e AL	426	// Look for possible ok targets.
421c8d10	427	Version **VList = Start.AllTargets();
6c139d6e AL	428	bool Bad = true;
	429	for (Version *I = VList; I != 0 && Bad == true; I++)
	430	{
	431	VerIterator Ver(Cache,*I);
	432	PkgIterator Pkg = Ver.ParentPkg();
	433
	434	// See if the current version is ok
	435	if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true &&
	436	Pkg.State() == PkgIterator::NeedsNothing)
	437	{
	438	Bad = false;
	439	continue;
	440	}
	441	}
	442
	443	// Look for something that could be configured.
	444	for (Version *I = VList; I != 0 && Bad == true; I++)
	445	{
	446	VerIterator Ver(Cache,*I);
	447	PkgIterator Pkg = Ver.ParentPkg();
	448
	449	// Not the install version
	450	if (Cache[Pkg].InstallVer != *I \|\|
	451	(Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
	452	continue;
	453
	454	Bad = !SmartConfigure(Pkg);
	455	}
	456
	457	delete [] VList;
6c139d6e	458
421c8d10 AL	459	/* If this or element did not match then continue on to the
	460	next or element until a matching element is found*/
	461	if (Bad == true)
	462	{
	463	if (Start == End)
	464	return _error->Error("Internal Error, Couldn't configure a pre-depend");
	465	Start++;
	466	}
	467	else
	468	break;
6c139d6e AL	469	}
6c139d6e AL	470
421c8d10	471	if (End->Type == pkgCache::Dep::Conflicts)
6c139d6e AL	472	{
	473	/* Look for conflicts. Two packages that are both in the install
	474	state cannot conflict so we don't check.. */
421c8d10	475	Version **VList = End.AllTargets();
6c139d6e AL	476	for (Version *I = VList; I != 0; I++)
	477	{
	478	VerIterator Ver(Cache,*I);
	479	PkgIterator Pkg = Ver.ParentPkg();
	480
	481	// See if the current version is conflicting
	482	if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true)
	483	{
	484	if (EarlyRemove(Pkg) == false)
	485	return _error->Error("Internal Error, Could not early remove %s",Pkg.Name());
	486	}
	487	}
	488	delete [] VList;
	489	}
	490	}
	491
	492	// Check for reverse conflicts.
	493	CheckRConflicts(Pkg,Pkg.RevDependsList(),
	494	Cache[Pkg].InstVerIter(Cache).VerStr());
	495	for (PrvIterator P = Cache[Pkg].InstVerIter(Cache).ProvidesList();
	496	P.end() == false; P++)
	497	CheckRConflicts(Pkg,P.ParentPkg().RevDependsList(),P.ProvideVersion());
	498
	499	if (Install(Pkg,FileNames[Pkg->ID]) == false)
	500	return false;
	501
	502	List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
	503
	504	// Perform immedate configuration of the package.
	505	if (List->IsFlag(Pkg,pkgOrderList::Immediate) == true)
	506	if (SmartConfigure(Pkg) == false)
	507	return _error->Error("Internal Error, Could not perform immediate configuraton");
	508
	509	return true;
	510	}
	511	/}}}/
	512	// PM::OrderInstall - Installation ordering routine /{{{/
	513	// ---------------------------------------------------------------------
	514	/* */
281daf46	515	pkgPackageManager::OrderResult pkgPackageManager::OrderInstall()
6c139d6e	516	{
7a1b1f8b	517	if (CreateOrderList() == false)
281daf46 AL	518	return Failed;
	519
	520	Reset();
6c139d6e	521
30e1eab5 AL	522	if (Debug == true)
30e1eab5 AL	523	clog << "Begining to order" << endl;
6c139d6e	524
281daf46 AL	525	if (List->OrderUnpack(FileNames) == false)
	526	{
	527	_error->Error("Internal ordering error");
	528	return Failed;
	529	}
	530
30e1eab5 AL	531	if (Debug == true)
	532	clog << "Done ordering" << endl;
	533
281daf46	534	bool DoneSomething = false;
6c139d6e AL	535	for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
	536	{
	537	PkgIterator Pkg(Cache,*I);
281daf46 AL	538
	539	if (List->IsNow(Pkg) == false)
	540	{
	541	if (Debug == true)
	542	clog << "Skipping already done " << Pkg.Name() << endl;
	543	continue;
	544	}
	545
2fd65468	546	if (List->IsMissing(Pkg) == true)
281daf46 AL	547	{
	548	if (Debug == true)
	549	clog << "Sequence completed at" << Pkg.Name() << endl;
	550	if (DoneSomething == false)
	551	{
	552	_error->Error("Internal Error, ordering was unable to handle the media swap");
	553	return Failed;
	554	}
	555	return Incomplete;
	556	}
6c139d6e AL	557
	558	// Sanity check
	559	if (Cache[Pkg].Keep() == true && Pkg.State() == pkgCache::PkgIterator::NeedsNothing)
281daf46 AL	560	{
	561	_error->Error("Internal Error, trying to manipulate a kept package");
	562	return Failed;
	563	}
6c139d6e AL	564
	565	// Perform a delete or an install
	566	if (Cache[Pkg].Delete() == true)
	567	{
	568	if (SmartRemove(Pkg) == false)
281daf46	569	return Failed;
6c139d6e AL	570	}
	571	else
	572	if (SmartUnPack(Pkg) == false)
281daf46 AL	573	return Failed;
281daf46 AL	574	DoneSomething = true;
6c139d6e AL	575	}
	576
	577	// Final run through the configure phase
	578	if (ConfigureAll() == false)
281daf46	579	return Failed;
6c139d6e AL	580
	581	// Sanity check
	582	for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
281daf46	583	{
6c139d6e	584	if (List->IsFlag(*I,pkgOrderList::Configured) == false)
281daf46 AL	585	{
	586	_error->Error("Internal error, packages left unconfigured. %s",
	587	PkgIterator(Cache,*I).Name());
	588	return Failed;
	589	}
	590	}
	591
	592	return Completed;
6c139d6e AL	593	}
	594	/}}}/
	595	// PM::DoInstall - Does the installation /{{{/
	596	// ---------------------------------------------------------------------
	597	/* This uses the filenames in FileNames and the information in the
	598	DepCache to perform the installation of packages.*/
281daf46	599	pkgPackageManager::OrderResult pkgPackageManager::DoInstall()
6c139d6e	600	{
281daf46 AL	601	OrderResult Res = OrderInstall();
	602	if (Res != Failed)
	603	if (Go() == false)
	604	return Failed;
	605	return Res;
6c139d6e AL	606	}
6c139d6e AL	607	/}}}/