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

// -*- mode: cpp; mode: fold -*-
// Description								/*{{{*/
// $Id: packagemanager.cc,v 1.14 1999/02/21 08:38:53 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);

      // 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;
      
      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);

   bool Bad = false;
   for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
   {
      // These don't need files
      if (Cache[I].Keep() == true)
	 continue;
      if (Cache[I].Delete() == true)
	 continue;
      
      // We have a filename
      if (FileNames[I->ID].empty() == false)
	 continue;
      
      // Skip Packages that need configure only.
      if (I.State() == pkgCache::PkgIterator::NeedsConfigure && 
	  Cache[I].Keep() == true)
	 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()
{
   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)
	 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);
}
									/*}}}*/
// 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			/*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgPackageManager::OrderInstall()
{
   if (CreateOrderList() == false)
      return false;
   
   if (Debug == true)
      clog << "Begining to order" << endl;
   
   if (List->OrderUnpack() == false)
      return _error->Error("Internal ordering error");

   if (Debug == true)
      clog << "Done ordering" << endl;

   for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
   {
      PkgIterator Pkg(Cache,*I);
      
      // Sanity check
      if (Cache[Pkg].Keep() == true && Pkg.State() == pkgCache::PkgIterator::NeedsNothing)
	 return _error->Error("Internal Error, trying to manipulate a kept package");
      
      // Perform a delete or an install
      if (Cache[Pkg].Delete() == true)
      {
	 if (SmartRemove(Pkg) == false)
	    return false;	 
      }
      else
	 if (SmartUnPack(Pkg) == false)
	    return false;
   }
   
   // Final run through the configure phase
   if (ConfigureAll() == false)
      return false;

   // Sanity check
   for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
      if (List->IsFlag(*I,pkgOrderList::Configured) == false)
	 return _error->Error("Internal error, packages left unconfigured. %s",
			      PkgIterator(Cache,*I).Name());

   return true;
}
									/*}}}*/
// PM::DoInstall - Does the installation				/*{{{*/
// ---------------------------------------------------------------------
/* This uses the filenames in FileNames and the information in the
   DepCache to perform the installation of packages.*/
bool pkgPackageManager::DoInstall()
{
   return OrderInstall() && Go();
}
									/*}}}*/
Commit	Line	Data
6c139d6e AL	1	// -- mode: cpp; mode: fold --
6c139d6e AL	2	// Description /{{{/
138d4b3d	3	// $Id: packagemanager.cc,v 1.14 1999/02/21 08:38:53 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);
	63
	64	// Skip packages to erase
	65	if (Cache[Pkg].Delete() == true)
03e39e59	66	continue;
d38b7b3d AL	67
d38b7b3d AL	68	// Skip Packages that need configure only.
9dbb421f AL	69	if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure &&
9dbb421f AL	70	Cache[Pkg].Keep() == true)
d38b7b3d	71	continue;
03e39e59	72
7a1b1f8b AL	73	new pkgAcqArchive(Owner,Sources,Recs,Cache[Pkg].InstVerIter(Cache),
7a1b1f8b AL	74	FileNames[Pkg->ID]);
03e39e59	75	}
7a1b1f8b	76
03e39e59 AL	77	return true;
	78	}
	79	/}}}/
6c139d6e AL	80	// PM::FixMissing - Keep all missing packages /{{{/
	81	// ---------------------------------------------------------------------
	82	/* This is called to correct the installation when packages could not
	83	be downloaded. */
	84	bool pkgPackageManager::FixMissing()
	85	{
30e1eab5	86	pkgProblemResolver Resolve(Cache);
9dbb421f AL	87
9dbb421f AL	88	bool Bad = false;
6c139d6e AL	89	for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
6c139d6e AL	90	{
9dbb421f AL	91	// These don't need files
9dbb421f AL	92	if (Cache[I].Keep() == true)
6c139d6e	93	continue;
9dbb421f	94	if (Cache[I].Delete() == true)
6c139d6e	95	continue;
9dbb421f AL	96
	97	// We have a filename
	98	if (FileNames[I->ID].empty() == false)
	99	continue;
	100
	101	// Skip Packages that need configure only.
	102	if (I.State() == pkgCache::PkgIterator::NeedsConfigure &&
	103	Cache[I].Keep() == true)
	104	continue;
	105
	106	// Okay, this file is missing and we need it. Mark it for keep
	107	Bad = true;
6c139d6e AL	108	Cache.MarkKeep(I);
	109	}
	110
9dbb421f AL	111	if (Bad == false)
	112	return true;
	113
6c139d6e	114	// Now downgrade everything that is broken
30e1eab5	115	return Resolve.ResolveByKeep() == true && Cache.BrokenCount() == 0;
6c139d6e AL	116	}
	117	/}}}/
	118
7a1b1f8b AL	119	// PM::CreateOrderList - Create the ordering class /{{{/
	120	// ---------------------------------------------------------------------
	121	/* This populates the ordering list with all the packages that are
	122	going to change. */
	123	bool pkgPackageManager::CreateOrderList()
	124	{
	125	delete List;
	126	List = new pkgOrderList(Cache);
	127
b780bc1b	128	bool NoImmConfigure = _config->FindB("APT::Immediate-Configure",false);
079cc404	129
7a1b1f8b AL	130	// Generate the list of affected packages and sort it
	131	for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
	132	{
138d4b3d AL	133	// Mark the package and its dependends for immediate configuration
	134	if (((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential \|\|
	135	(I->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important) &&
079cc404	136	NoImmConfigure == false)
7a1b1f8b AL	137	{
7a1b1f8b AL	138	List->Flag(I,pkgOrderList::Immediate);
d38b7b3d AL	139
d38b7b3d AL	140	// Look for other packages to make immediate configurea
7a1b1f8b AL	141	if (Cache[I].InstallVer != 0)
	142	for (DepIterator D = Cache[I].InstVerIter(Cache).DependsList();
	143	D.end() == false; D++)
	144	if (D->Type == pkgCache::Dep::Depends \|\| D->Type == pkgCache::Dep::PreDepends)
	145	List->Flag(D.TargetPkg(),pkgOrderList::Immediate);
d38b7b3d AL	146
d38b7b3d AL	147	// And again with the current version.
7a1b1f8b AL	148	if (I->CurrentVer != 0)
	149	for (DepIterator D = I.CurrentVer().DependsList();
	150	D.end() == false; D++)
	151	if (D->Type == pkgCache::Dep::Depends \|\| D->Type == pkgCache::Dep::PreDepends)
	152	List->Flag(D.TargetPkg(),pkgOrderList::Immediate);
	153	}
	154
	155	// Not interesting
	156	if ((Cache[I].Keep() == true \|\|
	157	Cache[I].InstVerIter(Cache) == I.CurrentVer()) &&
	158	I.State() == pkgCache::PkgIterator::NeedsNothing)
	159	continue;
	160
	161	// Append it to the list
138d4b3d	162	List->push_back(I);
7a1b1f8b AL	163	}
	164
	165	return true;
	166	}
	167	/}}}/
6c139d6e AL	168	// PM::DepAlwaysTrue - Returns true if this dep is irrelevent /{{{/
	169	// ---------------------------------------------------------------------
	170	/* The restriction on provides is to eliminate the case when provides
	171	are transitioning between valid states [ie exim to smail] */
	172	bool pkgPackageManager::DepAlwaysTrue(DepIterator D)
	173	{
	174	if (D.TargetPkg()->ProvidesList != 0)
	175	return false;
	176
	177	if ((Cache[D] & pkgDepCache::DepInstall) != 0 &&
	178	(Cache[D] & pkgDepCache::DepNow) != 0)
	179	return true;
	180	return false;
	181	}
	182	/}}}/
	183	// PM::CheckRConflicts - Look for reverse conflicts /{{{/
	184	// ---------------------------------------------------------------------
	185	/* This looks over the reverses for a conflicts line that needs early
	186	removal. */
	187	bool pkgPackageManager::CheckRConflicts(PkgIterator Pkg,DepIterator D,
	188	const char *Ver)
	189	{
	190	for (;D.end() == false; D++)
	191	{
b50b2c97	192	if (D->Type != pkgCache::Dep::Conflicts)
6c139d6e AL	193	continue;
	194
	195	if (D.ParentPkg() == Pkg)
	196	continue;
	197
	198	if (pkgCheckDep(D.TargetVer(),Ver,D->CompareOp) == false)
	199	continue;
	200
	201	if (List->IsNow(Pkg) == false)
	202	continue;
	203
	204	if (EarlyRemove(D.ParentPkg()) == false)
	205	return false;
	206	}
	207	return true;
	208	}
	209	/}}}/
	210	// PM::ConfigureAll - Run the all out configuration /{{{/
	211	// ---------------------------------------------------------------------
	212	/* This configures every package. It is assumed they are all unpacked and
	213	that the final configuration is valid. */
	214	bool pkgPackageManager::ConfigureAll()
	215	{
	216	pkgOrderList OList(Cache);
	217
	218	// Populate the order list
	219	for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
	220	if (List->IsFlag(pkgCache::PkgIterator(Cache,*I),
	221	pkgOrderList::UnPacked) == true)
	222	OList.push_back(*I);
	223
	224	if (OList.OrderConfigure() == false)
	225	return false;
	226
	227	// Perform the configuring
	228	for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); I++)
	229	{
	230	PkgIterator Pkg(Cache,*I);
	231
	232	if (Configure(Pkg) == false)
	233	return false;
	234
	235	List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
	236	}
	237
	238	return true;
	239	}
	240	/}}}/
	241	// PM::SmartConfigure - Perform immediate configuration of the pkg /{{{/
	242	// ---------------------------------------------------------------------
	243	/* This routine scheduals the configuration of the given package and all
	244	of it's dependents. */
	245	bool pkgPackageManager::SmartConfigure(PkgIterator Pkg)
	246	{
	247	pkgOrderList OList(Cache);
	248
	249	if (DepAdd(OList,Pkg) == false)
	250	return false;
	251
	252	if (OList.OrderConfigure() == false)
	253	return false;
	254
	255	// Perform the configuring
	256	for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); I++)
257	{
258	PkgIterator Pkg(Cache,*I);
259
260	if (Configure(Pkg) == false)
261	return false;
262
263	List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
264	}
265
266	// Sanity Check
267	if (List->IsFlag(Pkg,pkgOrderList::Configured) == false)
268	return _error->Error("Internal error, could not immediate configure %s",Pkg.Name());
269
270	return true;
271	}
272	/}}}/
273	// PM::DepAdd - Add all dependents to the oder list /{{{/
274	// ---------------------------------------------------------------------
275	/* This recursively adds all dependents to the order list */
276	bool pkgPackageManager::DepAdd(pkgOrderList &OList,PkgIterator Pkg,int Depth)
277	{
278	if (OList.IsFlag(Pkg,pkgOrderList::Added) == true)
279	return true;
280	if (List->IsFlag(Pkg,pkgOrderList::Configured) == true)
281	return true;
282	if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == false)
283	return false;
284
285
286	// Put the package on the list
287	OList.push_back(Pkg);
288	OList.Flag(Pkg,pkgOrderList::Added);
289	Depth++;
290
291	// Check the dependencies to see if they are all satisfied.
292	bool Bad = false;
293	for (DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList(); D.end() == false;)
294	{
b50b2c97	295	if (D->Type != pkgCache::Dep::Depends && D->Type != pkgCache::Dep::PreDepends)
6c139d6e AL	296	{
	297	D++;
	298	continue;
	299	}
	300
	301	// Grok or groups
	302	Bad = true;
	303	for (bool LastOR = true; D.end() == false && LastOR == true; D++)
	304	{
b50b2c97	305	LastOR = (D->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or;
6c139d6e AL	306
	307	if (Bad == false)
	308	continue;
	309
	310	Version **VList = D.AllTargets();
	311	for (Version *I = VList; I != 0 && Bad == true; I++)
	312	{
	313	VerIterator Ver(Cache,*I);
	314	PkgIterator Pkg = Ver.ParentPkg();
	315
	316	// See if the current version is ok
	317	if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true &&
	318	Pkg.State() == PkgIterator::NeedsNothing)
	319	{
	320	Bad = false;
	321	continue;
	322	}
	323
	324	// Not the install version
	325	if (Cache[Pkg].InstallVer != *I \|\|
	326	(Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
	327	continue;
	328	if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == true)
	329	Bad = !DepAdd(OList,Pkg,Depth);
	330	if (List->IsFlag(Pkg,pkgOrderList::Configured) == true)
	331	Bad = false;
	332	}
	333	delete [] VList;
	334	}
	335
	336	if (Bad == true)
	337	{
	338	OList.Flag(Pkg,0,pkgOrderList::Added);
	339	OList.pop_back();
	340	Depth--;
	341	return false;
	342	}
	343	}
	344
	345	Depth--;
	346	return true;
	347	}
	348	/}}}/
	349	// PM::EarlyRemove - Perform removal of packages before their time /{{{/
	350	// ---------------------------------------------------------------------
	351	/* This is called to deal with conflicts arising from unpacking */
	352	bool pkgPackageManager::EarlyRemove(PkgIterator Pkg)
	353	{
	354	if (List->IsNow(Pkg) == false)
	355	return true;
	356
	357	// Already removed it
	358	if (List->IsFlag(Pkg,pkgOrderList::Removed) == true)
	359	return true;
	360
	361	// Woops, it will not be re-installed!
	362	if (List->IsFlag(Pkg,pkgOrderList::InList) == false)
	363	return false;
	364
	365	bool Res = SmartRemove(Pkg);
	366	if (Cache[Pkg].Delete() == false)
	367	List->Flag(Pkg,pkgOrderList::Removed,pkgOrderList::States);
	368
	369	return Res;
370	}
371	/}}}/
372	// PM::SmartRemove - Removal Helper /{{{/
373	// ---------------------------------------------------------------------
374	/* */
375	bool pkgPackageManager::SmartRemove(PkgIterator Pkg)
376	{
377	if (List->IsNow(Pkg) == false)
378	return true;
379
380	List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
381	return Remove(Pkg);
382	}
383	/}}}/
384	// PM::SmartUnPack - Install helper /{{{/
385	// ---------------------------------------------------------------------
386	/* This performs the task of handling pre-depends. */
387	bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
388	{
389	// Check if it is already unpacked
390	if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure &&
391	Cache[Pkg].Keep() == true)
392	{
393	List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
394	if (List->IsFlag(Pkg,pkgOrderList::Immediate) == true)
395	if (SmartConfigure(Pkg) == false)
396	return _error->Error("Internal Error, Could not perform immediate configuraton");
397	return true;
398	}
981d20eb	399
6c139d6e AL	400	/* See if this packages install version has any predependencies
	401	that are not met by 'now' packages. */
	402	for (DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList();
	403	D.end() == false; D++)
	404	{
b50b2c97	405	if (D->Type == pkgCache::Dep::PreDepends)
6c139d6e AL	406	{
	407	// Look for possible ok targets.
	408	Version **VList = D.AllTargets();
	409	bool Bad = true;
	410	for (Version *I = VList; I != 0 && Bad == true; I++)
	411	{
	412	VerIterator Ver(Cache,*I);
	413	PkgIterator Pkg = Ver.ParentPkg();
	414
	415	// See if the current version is ok
	416	if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true &&
	417	Pkg.State() == PkgIterator::NeedsNothing)
	418	{
	419	Bad = false;
	420	continue;
	421	}
	422	}
	423
	424	// Look for something that could be configured.
	425	for (Version *I = VList; I != 0 && Bad == true; I++)
	426	{
	427	VerIterator Ver(Cache,*I);
	428	PkgIterator Pkg = Ver.ParentPkg();
	429
	430	// Not the install version
	431	if (Cache[Pkg].InstallVer != *I \|\|
	432	(Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
	433	continue;
	434
	435	Bad = !SmartConfigure(Pkg);
	436	}
	437
	438	delete [] VList;
	439
	440	if (Bad == true)
	441	return _error->Error("Internal Error, Couldn't configure a pre-depend");
	442
	443	continue;
	444	}
	445
b50b2c97	446	if (D->Type == pkgCache::Dep::Conflicts)
6c139d6e AL	447	{
	448	/* Look for conflicts. Two packages that are both in the install
	449	state cannot conflict so we don't check.. */
	450	Version **VList = D.AllTargets();
	451	for (Version *I = VList; I != 0; I++)
	452	{
	453	VerIterator Ver(Cache,*I);
	454	PkgIterator Pkg = Ver.ParentPkg();
	455
	456	// See if the current version is conflicting
	457	if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true)
	458	{
	459	if (EarlyRemove(Pkg) == false)
	460	return _error->Error("Internal Error, Could not early remove %s",Pkg.Name());
	461	}
	462	}
	463	delete [] VList;
	464	}
	465	}
	466
	467	// Check for reverse conflicts.
	468	CheckRConflicts(Pkg,Pkg.RevDependsList(),
	469	Cache[Pkg].InstVerIter(Cache).VerStr());
	470	for (PrvIterator P = Cache[Pkg].InstVerIter(Cache).ProvidesList();
	471	P.end() == false; P++)
	472	CheckRConflicts(Pkg,P.ParentPkg().RevDependsList(),P.ProvideVersion());
	473
	474	if (Install(Pkg,FileNames[Pkg->ID]) == false)
	475	return false;
	476
	477	List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
	478
	479	// Perform immedate configuration of the package.
	480	if (List->IsFlag(Pkg,pkgOrderList::Immediate) == true)
	481	if (SmartConfigure(Pkg) == false)
	482	return _error->Error("Internal Error, Could not perform immediate configuraton");
	483
	484	return true;
	485	}
	486	/}}}/
	487	// PM::OrderInstall - Installation ordering routine /{{{/
	488	// ---------------------------------------------------------------------
	489	/* */
	490	bool pkgPackageManager::OrderInstall()
	491	{
7a1b1f8b AL	492	if (CreateOrderList() == false)
7a1b1f8b AL	493	return false;
6c139d6e	494
30e1eab5 AL	495	if (Debug == true)
30e1eab5 AL	496	clog << "Begining to order" << endl;
6c139d6e AL	497
	498	if (List->OrderUnpack() == false)
	499	return _error->Error("Internal ordering error");
	500
30e1eab5 AL	501	if (Debug == true)
	502	clog << "Done ordering" << endl;
	503
6c139d6e AL	504	for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
	505	{
	506	PkgIterator Pkg(Cache,*I);
	507
	508	// Sanity check
	509	if (Cache[Pkg].Keep() == true && Pkg.State() == pkgCache::PkgIterator::NeedsNothing)
	510	return _error->Error("Internal Error, trying to manipulate a kept package");
	511
	512	// Perform a delete or an install
	513	if (Cache[Pkg].Delete() == true)
	514	{
	515	if (SmartRemove(Pkg) == false)
	516	return false;
	517	}
	518	else
	519	if (SmartUnPack(Pkg) == false)
	520	return false;
	521	}
	522
	523	// Final run through the configure phase
	524	if (ConfigureAll() == false)
	525	return false;
	526
	527	// Sanity check
	528	for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
	529	if (List->IsFlag(*I,pkgOrderList::Configured) == false)
	530	return _error->Error("Internal error, packages left unconfigured. %s",
	531	PkgIterator(Cache,*I).Name());
	532
	533	return true;
	534	}
	535	/}}}/
	536	// PM::DoInstall - Does the installation /{{{/
	537	// ---------------------------------------------------------------------
	538	/* This uses the filenames in FileNames and the information in the
	539	DepCache to perform the installation of packages.*/
	540	bool pkgPackageManager::DoInstall()
	541	{
	542	return OrderInstall() && Go();
	543	}
	544	/}}}/