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

// -*- mode: cpp; mode: fold -*-
// Description								/*{{{*/
// $Id: packagemanager.cc,v 1.10 1998/12/10 04:22:46 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)
	 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);
   
   for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
   {
     if (Cache[I].Keep() == true)
	 continue;
      if (FileNames[I->ID].empty() == false || Cache[I].Delete() == true)
	 continue;
      Cache.MarkKeep(I);
   }
   
   // 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);
   
   // Generate the list of affected packages and sort it
   for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
   {
      // Mark the package for immediate configuration
      if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
      {
	 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);
      
      if ((I->Flags & pkgCache::Flag::ImmediateConf) == pkgCache::Flag::ImmediateConf)
	 List->Flag(I,pkgOrderList::Immediate);
   }
   
   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 /{{{/
3d615484	3	// $Id: packagemanager.cc,v 1.10 1998/12/10 04:22:46 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
	68	// Skip Packages that need configure only.
	69	if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure)
	70	continue;
03e39e59	71
7a1b1f8b AL	72	new pkgAcqArchive(Owner,Sources,Recs,Cache[Pkg].InstVerIter(Cache),
7a1b1f8b AL	73	FileNames[Pkg->ID]);
03e39e59	74	}
7a1b1f8b	75
03e39e59 AL	76	return true;
	77	}
	78	/}}}/
6c139d6e AL	79	// PM::FixMissing - Keep all missing packages /{{{/
	80	// ---------------------------------------------------------------------
	81	/* This is called to correct the installation when packages could not
	82	be downloaded. */
	83	bool pkgPackageManager::FixMissing()
	84	{
30e1eab5 AL	85	pkgProblemResolver Resolve(Cache);
30e1eab5 AL	86
6c139d6e AL	87	for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
6c139d6e AL	88	{
30e1eab5	89	if (Cache[I].Keep() == true)
6c139d6e AL	90	continue;
	91	if (FileNames[I->ID].empty() == false \|\| Cache[I].Delete() == true)
	92	continue;
	93	Cache.MarkKeep(I);
	94	}
	95
	96	// Now downgrade everything that is broken
30e1eab5	97	return Resolve.ResolveByKeep() == true && Cache.BrokenCount() == 0;
6c139d6e AL	98	}
	99	/}}}/
	100
7a1b1f8b AL	101	// PM::CreateOrderList - Create the ordering class /{{{/
	102	// ---------------------------------------------------------------------
	103	/* This populates the ordering list with all the packages that are
	104	going to change. */
	105	bool pkgPackageManager::CreateOrderList()
	106	{
	107	delete List;
	108	List = new pkgOrderList(Cache);
	109
	110	// Generate the list of affected packages and sort it
	111	for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
	112	{
d38b7b3d	113	// Mark the package for immediate configuration
7a1b1f8b AL	114	if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
	115	{
	116	List->Flag(I,pkgOrderList::Immediate);
d38b7b3d AL	117
d38b7b3d AL	118	// Look for other packages to make immediate configurea
7a1b1f8b AL	119	if (Cache[I].InstallVer != 0)
	120	for (DepIterator D = Cache[I].InstVerIter(Cache).DependsList();
	121	D.end() == false; D++)
	122	if (D->Type == pkgCache::Dep::Depends \|\| D->Type == pkgCache::Dep::PreDepends)
	123	List->Flag(D.TargetPkg(),pkgOrderList::Immediate);
d38b7b3d AL	124
d38b7b3d AL	125	// And again with the current version.
7a1b1f8b AL	126	if (I->CurrentVer != 0)
	127	for (DepIterator D = I.CurrentVer().DependsList();
	128	D.end() == false; D++)
	129	if (D->Type == pkgCache::Dep::Depends \|\| D->Type == pkgCache::Dep::PreDepends)
	130	List->Flag(D.TargetPkg(),pkgOrderList::Immediate);
	131	}
	132
	133	// Not interesting
	134	if ((Cache[I].Keep() == true \|\|
	135	Cache[I].InstVerIter(Cache) == I.CurrentVer()) &&
	136	I.State() == pkgCache::PkgIterator::NeedsNothing)
	137	continue;
	138
	139	// Append it to the list
	140	List->push_back(I);
	141
	142	if ((I->Flags & pkgCache::Flag::ImmediateConf) == pkgCache::Flag::ImmediateConf)
	143	List->Flag(I,pkgOrderList::Immediate);
	144	}
	145
	146	return true;
	147	}
	148	/}}}/
6c139d6e AL	149	// PM::DepAlwaysTrue - Returns true if this dep is irrelevent /{{{/
	150	// ---------------------------------------------------------------------
	151	/* The restriction on provides is to eliminate the case when provides
	152	are transitioning between valid states [ie exim to smail] */
	153	bool pkgPackageManager::DepAlwaysTrue(DepIterator D)
	154	{
	155	if (D.TargetPkg()->ProvidesList != 0)
	156	return false;
	157
	158	if ((Cache[D] & pkgDepCache::DepInstall) != 0 &&
	159	(Cache[D] & pkgDepCache::DepNow) != 0)
	160	return true;
	161	return false;
	162	}
	163	/}}}/
	164	// PM::CheckRConflicts - Look for reverse conflicts /{{{/
	165	// ---------------------------------------------------------------------
	166	/* This looks over the reverses for a conflicts line that needs early
	167	removal. */
	168	bool pkgPackageManager::CheckRConflicts(PkgIterator Pkg,DepIterator D,
	169	const char *Ver)
	170	{
	171	for (;D.end() == false; D++)
	172	{
b50b2c97	173	if (D->Type != pkgCache::Dep::Conflicts)
6c139d6e AL	174	continue;
	175
	176	if (D.ParentPkg() == Pkg)
	177	continue;
	178
	179	if (pkgCheckDep(D.TargetVer(),Ver,D->CompareOp) == false)
	180	continue;
	181
	182	if (List->IsNow(Pkg) == false)
	183	continue;
	184
	185	if (EarlyRemove(D.ParentPkg()) == false)
	186	return false;
	187	}
	188	return true;
	189	}
	190	/}}}/
	191	// PM::ConfigureAll - Run the all out configuration /{{{/
	192	// ---------------------------------------------------------------------
	193	/* This configures every package. It is assumed they are all unpacked and
	194	that the final configuration is valid. */
	195	bool pkgPackageManager::ConfigureAll()
	196	{
	197	pkgOrderList OList(Cache);
	198
	199	// Populate the order list
	200	for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
	201	if (List->IsFlag(pkgCache::PkgIterator(Cache,*I),
	202	pkgOrderList::UnPacked) == true)
	203	OList.push_back(*I);
	204
	205	if (OList.OrderConfigure() == false)
	206	return false;
	207
	208	// Perform the configuring
	209	for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); I++)
	210	{
	211	PkgIterator Pkg(Cache,*I);
	212
	213	if (Configure(Pkg) == false)
	214	return false;
	215
	216	List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
	217	}
	218
	219	return true;
	220	}
	221	/}}}/
	222	// PM::SmartConfigure - Perform immediate configuration of the pkg /{{{/
	223	// ---------------------------------------------------------------------
	224	/* This routine scheduals the configuration of the given package and all
	225	of it's dependents. */
	226	bool pkgPackageManager::SmartConfigure(PkgIterator Pkg)
	227	{
	228	pkgOrderList OList(Cache);
	229
	230	if (DepAdd(OList,Pkg) == false)
	231	return false;
	232
	233	if (OList.OrderConfigure() == false)
	234	return false;
	235
	236	// Perform the configuring
	237	for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); I++)
238	{
239	PkgIterator Pkg(Cache,*I);
240
241	if (Configure(Pkg) == false)
242	return false;
243
244	List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
245	}
246
247	// Sanity Check
248	if (List->IsFlag(Pkg,pkgOrderList::Configured) == false)
249	return _error->Error("Internal error, could not immediate configure %s",Pkg.Name());
250
251	return true;
252	}
253	/}}}/
254	// PM::DepAdd - Add all dependents to the oder list /{{{/
255	// ---------------------------------------------------------------------
256	/* This recursively adds all dependents to the order list */
257	bool pkgPackageManager::DepAdd(pkgOrderList &OList,PkgIterator Pkg,int Depth)
258	{
259	if (OList.IsFlag(Pkg,pkgOrderList::Added) == true)
260	return true;
261	if (List->IsFlag(Pkg,pkgOrderList::Configured) == true)
262	return true;
263	if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == false)
264	return false;
265
266
267	// Put the package on the list
268	OList.push_back(Pkg);
269	OList.Flag(Pkg,pkgOrderList::Added);
270	Depth++;
271
272	// Check the dependencies to see if they are all satisfied.
273	bool Bad = false;
274	for (DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList(); D.end() == false;)
275	{
b50b2c97	276	if (D->Type != pkgCache::Dep::Depends && D->Type != pkgCache::Dep::PreDepends)
6c139d6e AL	277	{
	278	D++;
	279	continue;
	280	}
	281
	282	// Grok or groups
	283	Bad = true;
	284	for (bool LastOR = true; D.end() == false && LastOR == true; D++)
	285	{
b50b2c97	286	LastOR = (D->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or;
6c139d6e AL	287
	288	if (Bad == false)
	289	continue;
	290
	291	Version **VList = D.AllTargets();
	292	for (Version *I = VList; I != 0 && Bad == true; I++)
	293	{
	294	VerIterator Ver(Cache,*I);
	295	PkgIterator Pkg = Ver.ParentPkg();
	296
	297	// See if the current version is ok
	298	if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true &&
	299	Pkg.State() == PkgIterator::NeedsNothing)
	300	{
	301	Bad = false;
	302	continue;
	303	}
	304
	305	// Not the install version
	306	if (Cache[Pkg].InstallVer != *I \|\|
	307	(Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
	308	continue;
	309	if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == true)
	310	Bad = !DepAdd(OList,Pkg,Depth);
	311	if (List->IsFlag(Pkg,pkgOrderList::Configured) == true)
	312	Bad = false;
	313	}
	314	delete [] VList;
	315	}
	316
	317	if (Bad == true)
	318	{
	319	OList.Flag(Pkg,0,pkgOrderList::Added);
	320	OList.pop_back();
	321	Depth--;
	322	return false;
	323	}
	324	}
	325
	326	Depth--;
	327	return true;
	328	}
	329	/}}}/
	330	// PM::EarlyRemove - Perform removal of packages before their time /{{{/
	331	// ---------------------------------------------------------------------
	332	/* This is called to deal with conflicts arising from unpacking */
	333	bool pkgPackageManager::EarlyRemove(PkgIterator Pkg)
	334	{
	335	if (List->IsNow(Pkg) == false)
	336	return true;
	337
	338	// Already removed it
	339	if (List->IsFlag(Pkg,pkgOrderList::Removed) == true)
	340	return true;
	341
	342	// Woops, it will not be re-installed!
	343	if (List->IsFlag(Pkg,pkgOrderList::InList) == false)
	344	return false;
	345
	346	bool Res = SmartRemove(Pkg);
	347	if (Cache[Pkg].Delete() == false)
	348	List->Flag(Pkg,pkgOrderList::Removed,pkgOrderList::States);
	349
	350	return Res;
351	}
352	/}}}/
353	// PM::SmartRemove - Removal Helper /{{{/
354	// ---------------------------------------------------------------------
355	/* */
356	bool pkgPackageManager::SmartRemove(PkgIterator Pkg)
357	{
358	if (List->IsNow(Pkg) == false)
359	return true;
360
361	List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
362	return Remove(Pkg);
363	}
364	/}}}/
365	// PM::SmartUnPack - Install helper /{{{/
366	// ---------------------------------------------------------------------
367	/* This performs the task of handling pre-depends. */
368	bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
369	{
370	// Check if it is already unpacked
371	if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure &&
372	Cache[Pkg].Keep() == true)
373	{
374	List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
375	if (List->IsFlag(Pkg,pkgOrderList::Immediate) == true)
376	if (SmartConfigure(Pkg) == false)
377	return _error->Error("Internal Error, Could not perform immediate configuraton");
378	return true;
379	}
981d20eb	380
6c139d6e AL	381	/* See if this packages install version has any predependencies
	382	that are not met by 'now' packages. */
	383	for (DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList();
	384	D.end() == false; D++)
	385	{
b50b2c97	386	if (D->Type == pkgCache::Dep::PreDepends)
6c139d6e AL	387	{
	388	// Look for possible ok targets.
	389	Version **VList = D.AllTargets();
	390	bool Bad = true;
	391	for (Version *I = VList; I != 0 && Bad == true; I++)
	392	{
	393	VerIterator Ver(Cache,*I);
	394	PkgIterator Pkg = Ver.ParentPkg();
	395
	396	// See if the current version is ok
	397	if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true &&
	398	Pkg.State() == PkgIterator::NeedsNothing)
	399	{
	400	Bad = false;
	401	continue;
	402	}
	403	}
	404
	405	// Look for something that could be configured.
	406	for (Version *I = VList; I != 0 && Bad == true; I++)
	407	{
	408	VerIterator Ver(Cache,*I);
	409	PkgIterator Pkg = Ver.ParentPkg();
	410
	411	// Not the install version
	412	if (Cache[Pkg].InstallVer != *I \|\|
	413	(Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
	414	continue;
	415
	416	Bad = !SmartConfigure(Pkg);
	417	}
	418
	419	delete [] VList;
	420
	421	if (Bad == true)
	422	return _error->Error("Internal Error, Couldn't configure a pre-depend");
	423
	424	continue;
	425	}
	426
b50b2c97	427	if (D->Type == pkgCache::Dep::Conflicts)
6c139d6e AL	428	{
	429	/* Look for conflicts. Two packages that are both in the install
	430	state cannot conflict so we don't check.. */
	431	Version **VList = D.AllTargets();
	432	for (Version *I = VList; I != 0; I++)
	433	{
	434	VerIterator Ver(Cache,*I);
	435	PkgIterator Pkg = Ver.ParentPkg();
	436
	437	// See if the current version is conflicting
	438	if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true)
	439	{
	440	if (EarlyRemove(Pkg) == false)
	441	return _error->Error("Internal Error, Could not early remove %s",Pkg.Name());
	442	}
	443	}
	444	delete [] VList;
	445	}
	446	}
	447
	448	// Check for reverse conflicts.
	449	CheckRConflicts(Pkg,Pkg.RevDependsList(),
	450	Cache[Pkg].InstVerIter(Cache).VerStr());
	451	for (PrvIterator P = Cache[Pkg].InstVerIter(Cache).ProvidesList();
	452	P.end() == false; P++)
	453	CheckRConflicts(Pkg,P.ParentPkg().RevDependsList(),P.ProvideVersion());
	454
	455	if (Install(Pkg,FileNames[Pkg->ID]) == false)
	456	return false;
	457
	458	List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
	459
	460	// Perform immedate configuration of the package.
	461	if (List->IsFlag(Pkg,pkgOrderList::Immediate) == true)
	462	if (SmartConfigure(Pkg) == false)
	463	return _error->Error("Internal Error, Could not perform immediate configuraton");
	464
	465	return true;
	466	}
	467	/}}}/
	468	// PM::OrderInstall - Installation ordering routine /{{{/
	469	// ---------------------------------------------------------------------
	470	/* */
	471	bool pkgPackageManager::OrderInstall()
	472	{
7a1b1f8b AL	473	if (CreateOrderList() == false)
7a1b1f8b AL	474	return false;
6c139d6e	475
30e1eab5 AL	476	if (Debug == true)
30e1eab5 AL	477	clog << "Begining to order" << endl;
6c139d6e AL	478
	479	if (List->OrderUnpack() == false)
	480	return _error->Error("Internal ordering error");
	481
30e1eab5 AL	482	if (Debug == true)
	483	clog << "Done ordering" << endl;
	484
6c139d6e AL	485	for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
	486	{
	487	PkgIterator Pkg(Cache,*I);
	488
	489	// Sanity check
	490	if (Cache[Pkg].Keep() == true && Pkg.State() == pkgCache::PkgIterator::NeedsNothing)
	491	return _error->Error("Internal Error, trying to manipulate a kept package");
	492
	493	// Perform a delete or an install
	494	if (Cache[Pkg].Delete() == true)
	495	{
	496	if (SmartRemove(Pkg) == false)
	497	return false;
	498	}
	499	else
	500	if (SmartUnPack(Pkg) == false)
	501	return false;
	502	}
	503
	504	// Final run through the configure phase
	505	if (ConfigureAll() == false)
	506	return false;
	507
	508	// Sanity check
	509	for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
	510	if (List->IsFlag(*I,pkgOrderList::Configured) == false)
	511	return _error->Error("Internal error, packages left unconfigured. %s",
	512	PkgIterator(Cache,*I).Name());
	513
	514	return true;
	515	}
	516	/}}}/
	517	// PM::DoInstall - Does the installation /{{{/
	518	// ---------------------------------------------------------------------
	519	/* This uses the filenames in FileNames and the information in the
	520	DepCache to perform the installation of packages.*/
	521	bool pkgPackageManager::DoInstall()
	522	{
	523	return OrderInstall() && Go();
	524	}
	525	/}}}/