]> git.saurik.com Git - apt.git/blobdiff - apt-pkg/edsp.cc
fix crash in order writing in pkgDPkgPM::WriteApportReport()
[apt.git] / apt-pkg / edsp.cc
index aec43c7e89be9c3177f26f1df2ecb7924f874f5b..0d0418e0633c52c191dde8d4b4a6f38448db2465 100644 (file)
@@ -5,50 +5,89 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
+#include <config.h>
+
 #include <apt-pkg/edsp.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/edsp.h>
 #include <apt-pkg/error.h>
+#include <apt-pkg/cacheset.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/configuration.h>
-#include <apt-pkg/version.h>
-#include <apt-pkg/policy.h>
 #include <apt-pkg/tagfile.h>
 #include <apt-pkg/tagfile.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/progress.h>
+#include <apt-pkg/depcache.h>
+#include <apt-pkg/pkgcache.h>
+#include <apt-pkg/cacheiterators.h>
+#include <apt-pkg/strutl.h>
+#include <apt-pkg/pkgrecords.h>
 
 
-#include <apti18n.h>
+#include <ctype.h>
+#include <stddef.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <algorithm>
+#include <iostream>
+#include <vector>
 #include <limits>
 #include <limits>
+#include <string>
+#include <list>
 
 
-#include <stdio.h>
+#include <apti18n.h>
                                                                        /*}}}*/
 
                                                                        /*}}}*/
 
+using std::string;
+
 // we could use pkgCache::DepType and ::Priority, but these would be localized strings…
 const char * const EDSP::PrioMap[] = {0, "important", "required", "standard",
                                      "optional", "extra"};
 // we could use pkgCache::DepType and ::Priority, but these would be localized strings…
 const char * const EDSP::PrioMap[] = {0, "important", "required", "standard",
                                      "optional", "extra"};
-const char * const EDSP::DepMap[] = {"", "Depends", "PreDepends", "Suggests",
+const char * const EDSP::DepMap[] = {"", "Depends", "Pre-Depends", "Suggests",
                                     "Recommends" , "Conflicts", "Replaces",
                                     "Obsoletes", "Breaks", "Enhances"};
 
 // EDSP::WriteScenario - to the given file descriptor                  /*{{{*/
                                     "Recommends" , "Conflicts", "Replaces",
                                     "Obsoletes", "Breaks", "Enhances"};
 
 // EDSP::WriteScenario - to the given file descriptor                  /*{{{*/
-bool EDSP::WriteScenario(pkgDepCache &Cache, FILE* output)
+bool EDSP::WriteScenario(pkgDepCache &Cache, FILE* output, OpProgress *Progress)
 {
 {
+   if (Progress != NULL)
+      Progress->SubProgress(Cache.Head().VersionCount, _("Send scenario to solver"));
+   unsigned long p = 0;
+   std::vector<std::string> archs = APT::Configuration::getArchitectures();
    for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg)
    for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg)
-      for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; ++Ver)
+   {
+      std::string const arch = Pkg.Arch();
+      if (std::find(archs.begin(), archs.end(), arch) == archs.end())
+        continue;
+      for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; ++Ver, ++p)
       {
         WriteScenarioVersion(Cache, output, Pkg, Ver);
       {
         WriteScenarioVersion(Cache, output, Pkg, Ver);
-        WriteScenarioDependency(Cache, output, Pkg, Ver);
+        WriteScenarioDependency(output, Ver);
         fprintf(output, "\n");
         fprintf(output, "\n");
+        if (Progress != NULL && p % 100 == 0)
+           Progress->Progress(p);
       }
       }
+   }
    return true;
 }
                                                                        /*}}}*/
 // EDSP::WriteLimitedScenario - to the given file descriptor           /*{{{*/
 bool EDSP::WriteLimitedScenario(pkgDepCache &Cache, FILE* output,
    return true;
 }
                                                                        /*}}}*/
 // EDSP::WriteLimitedScenario - to the given file descriptor           /*{{{*/
 bool EDSP::WriteLimitedScenario(pkgDepCache &Cache, FILE* output,
-                               APT::PackageSet const &pkgset)
+                               APT::PackageSet const &pkgset,
+                               OpProgress *Progress)
 {
 {
-   for (APT::PackageSet::const_iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg)
+   if (Progress != NULL)
+      Progress->SubProgress(Cache.Head().VersionCount, _("Send scenario to solver"));
+   unsigned long p  = 0;
+   for (APT::PackageSet::const_iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg, ++p)
       for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; ++Ver)
       {
         WriteScenarioVersion(Cache, output, Pkg, Ver);
       for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; ++Ver)
       {
         WriteScenarioVersion(Cache, output, Pkg, Ver);
-        WriteScenarioLimitedDependency(Cache, output, Pkg, Ver, pkgset);
+        WriteScenarioLimitedDependency(output, Ver, pkgset);
         fprintf(output, "\n");
         fprintf(output, "\n");
+        if (Progress != NULL && p % 100 == 0)
+           Progress->Progress(p);
       }
       }
+   if (Progress != NULL)
+      Progress->Done();
    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/
@@ -56,29 +95,47 @@ bool EDSP::WriteLimitedScenario(pkgDepCache &Cache, FILE* output,
 void EDSP::WriteScenarioVersion(pkgDepCache &Cache, FILE* output, pkgCache::PkgIterator const &Pkg,
                                pkgCache::VerIterator const &Ver)
 {
 void EDSP::WriteScenarioVersion(pkgDepCache &Cache, FILE* output, pkgCache::PkgIterator const &Pkg,
                                pkgCache::VerIterator const &Ver)
 {
+   pkgRecords Recs(Cache);
+   pkgRecords::Parser &rec = Recs.Lookup(Ver.FileList());
+   string srcpkg = rec.SourcePkg().empty() ? Pkg.Name() : rec.SourcePkg();
+
    fprintf(output, "Package: %s\n", Pkg.Name());
    fprintf(output, "Package: %s\n", Pkg.Name());
+   fprintf(output, "Source: %s\n", srcpkg.c_str());
    fprintf(output, "Architecture: %s\n", Ver.Arch());
    fprintf(output, "Version: %s\n", Ver.VerStr());
    if (Pkg.CurrentVer() == Ver)
       fprintf(output, "Installed: yes\n");
    fprintf(output, "Architecture: %s\n", Ver.Arch());
    fprintf(output, "Version: %s\n", Ver.VerStr());
    if (Pkg.CurrentVer() == Ver)
       fprintf(output, "Installed: yes\n");
-   if (Pkg->SelectedState == pkgCache::State::Hold)
+   if (Pkg->SelectedState == pkgCache::State::Hold ||
+       (Cache[Pkg].Keep() == true && Cache[Pkg].Protect() == true))
       fprintf(output, "Hold: yes\n");
    fprintf(output, "APT-ID: %d\n", Ver->ID);
    fprintf(output, "Priority: %s\n", PrioMap[Ver->Priority]);
    if ((Pkg->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
       fprintf(output, "Essential: yes\n");
    fprintf(output, "Section: %s\n", Ver.Section());
       fprintf(output, "Hold: yes\n");
    fprintf(output, "APT-ID: %d\n", Ver->ID);
    fprintf(output, "Priority: %s\n", PrioMap[Ver->Priority]);
    if ((Pkg->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
       fprintf(output, "Essential: yes\n");
    fprintf(output, "Section: %s\n", Ver.Section());
-   if (Ver->MultiArch == pkgCache::Version::Allowed || Ver->MultiArch == pkgCache::Version::AllAllowed)
+   if ((Ver->MultiArch & pkgCache::Version::Allowed) == pkgCache::Version::Allowed)
       fprintf(output, "Multi-Arch: allowed\n");
       fprintf(output, "Multi-Arch: allowed\n");
-   else if (Ver->MultiArch == pkgCache::Version::Foreign || Ver->MultiArch == pkgCache::Version::AllForeign)
+   else if ((Ver->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign)
       fprintf(output, "Multi-Arch: foreign\n");
       fprintf(output, "Multi-Arch: foreign\n");
-   else if (Ver->MultiArch == pkgCache::Version::Same)
+   else if ((Ver->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same)
       fprintf(output, "Multi-Arch: same\n");
    signed short Pin = std::numeric_limits<signed short>::min();
       fprintf(output, "Multi-Arch: same\n");
    signed short Pin = std::numeric_limits<signed short>::min();
-   for (pkgCache::VerFileIterator File = Ver.FileList(); File.end() == false; ++File) {
-      signed short const p = Cache.GetPolicy().GetPriority(File.File());
+   std::set<string> Releases;
+   for (pkgCache::VerFileIterator I = Ver.FileList(); I.end() == false; ++I) {
+      pkgCache::PkgFileIterator File = I.File();
+      signed short const p = Cache.GetPolicy().GetPriority(File);
       if (Pin < p)
         Pin = p;
       if (Pin < p)
         Pin = p;
+      if ((File->Flags & pkgCache::Flag::NotSource) != pkgCache::Flag::NotSource) {
+        string Release = File.RelStr();
+        if (!Release.empty())
+           Releases.insert(Release);
+      }
+   }
+   if (!Releases.empty()) {
+       fprintf(output, "APT-Release:\n");
+       for (std::set<string>::iterator R = Releases.begin(); R != Releases.end(); ++R)
+          fprintf(output, " %s\n", R->c_str());
    }
    fprintf(output, "APT-Pin: %d\n", Pin);
    if (Cache.GetCandidateVer(Pkg) == Ver)
    }
    fprintf(output, "APT-Pin: %d\n", Pin);
    if (Cache.GetCandidateVer(Pkg) == Ver)
@@ -88,15 +145,13 @@ void EDSP::WriteScenarioVersion(pkgDepCache &Cache, FILE* output, pkgCache::PkgI
 }
                                                                        /*}}}*/
 // EDSP::WriteScenarioDependency                                       /*{{{*/
 }
                                                                        /*}}}*/
 // EDSP::WriteScenarioDependency                                       /*{{{*/
-void EDSP::WriteScenarioDependency(pkgDepCache &Cache, FILE* output, pkgCache::PkgIterator const &Pkg,
-                               pkgCache::VerIterator const &Ver)
+void EDSP::WriteScenarioDependency( FILE* output, pkgCache::VerIterator const &Ver)
 {
    std::string dependencies[pkgCache::Dep::Enhances + 1];
    bool orGroup = false;
    for (pkgCache::DepIterator Dep = Ver.DependsList(); Dep.end() == false; ++Dep)
    {
 {
    std::string dependencies[pkgCache::Dep::Enhances + 1];
    bool orGroup = false;
    for (pkgCache::DepIterator Dep = Ver.DependsList(); Dep.end() == false; ++Dep)
    {
-      // Ignore implicit dependencies for multiarch here
-      if (strcmp(Pkg.Arch(), Dep.TargetPkg().Arch()) != 0)
+      if (Dep.IsMultiArchImplicit() == true)
         continue;
       if (orGroup == false)
         dependencies[Dep->Type].append(", ");
         continue;
       if (orGroup == false)
         dependencies[Dep->Type].append(", ");
@@ -117,8 +172,7 @@ void EDSP::WriteScenarioDependency(pkgDepCache &Cache, FILE* output, pkgCache::P
    string provides;
    for (pkgCache::PrvIterator Prv = Ver.ProvidesList(); Prv.end() == false; ++Prv)
    {
    string provides;
    for (pkgCache::PrvIterator Prv = Ver.ProvidesList(); Prv.end() == false; ++Prv)
    {
-      // Ignore implicit provides for multiarch here
-      if (strcmp(Pkg.Arch(), Prv.ParentPkg().Arch()) != 0 || strcmp(Pkg.Name(),Prv.Name()) == 0)
+      if (Prv.IsMultiArchImplicit() == true)
         continue;
       provides.append(", ").append(Prv.Name());
    }
         continue;
       provides.append(", ").append(Prv.Name());
    }
@@ -127,8 +181,7 @@ void EDSP::WriteScenarioDependency(pkgDepCache &Cache, FILE* output, pkgCache::P
 }
                                                                        /*}}}*/
 // EDSP::WriteScenarioLimitedDependency                                        /*{{{*/
 }
                                                                        /*}}}*/
 // EDSP::WriteScenarioLimitedDependency                                        /*{{{*/
-void EDSP::WriteScenarioLimitedDependency(pkgDepCache &Cache, FILE* output,
-                                         pkgCache::PkgIterator const &Pkg,
+void EDSP::WriteScenarioLimitedDependency(FILE* output,
                                          pkgCache::VerIterator const &Ver,
                                          APT::PackageSet const &pkgset)
 {
                                          pkgCache::VerIterator const &Ver,
                                          APT::PackageSet const &pkgset)
 {
@@ -136,8 +189,7 @@ void EDSP::WriteScenarioLimitedDependency(pkgDepCache &Cache, FILE* output,
    bool orGroup = false;
    for (pkgCache::DepIterator Dep = Ver.DependsList(); Dep.end() == false; ++Dep)
    {
    bool orGroup = false;
    for (pkgCache::DepIterator Dep = Ver.DependsList(); Dep.end() == false; ++Dep)
    {
-      // Ignore implicit dependencies for multiarch here
-      if (strcmp(Pkg.Arch(), Dep.TargetPkg().Arch()) != 0)
+      if (Dep.IsMultiArchImplicit() == true)
         continue;
       if (orGroup == false)
       {
         continue;
       if (orGroup == false)
       {
@@ -170,8 +222,7 @@ void EDSP::WriteScenarioLimitedDependency(pkgDepCache &Cache, FILE* output,
    string provides;
    for (pkgCache::PrvIterator Prv = Ver.ProvidesList(); Prv.end() == false; ++Prv)
    {
    string provides;
    for (pkgCache::PrvIterator Prv = Ver.ProvidesList(); Prv.end() == false; ++Prv)
    {
-      // Ignore implicit provides for multiarch here
-      if (strcmp(Pkg.Arch(), Prv.ParentPkg().Arch()) != 0 || strcmp(Pkg.Name(),Prv.Name()) == 0)
+      if (Prv.IsMultiArchImplicit() == true)
         continue;
       if (pkgset.find(Prv.ParentPkg()) == pkgset.end())
         continue;
         continue;
       if (pkgset.find(Prv.ParentPkg()) == pkgset.end())
         continue;
@@ -183,21 +234,38 @@ void EDSP::WriteScenarioLimitedDependency(pkgDepCache &Cache, FILE* output,
                                                                        /*}}}*/
 // EDSP::WriteRequest - to the given file descriptor                   /*{{{*/
 bool EDSP::WriteRequest(pkgDepCache &Cache, FILE* output, bool const Upgrade,
                                                                        /*}}}*/
 // EDSP::WriteRequest - to the given file descriptor                   /*{{{*/
 bool EDSP::WriteRequest(pkgDepCache &Cache, FILE* output, bool const Upgrade,
-                       bool const DistUpgrade, bool const AutoRemove)
+                       bool const DistUpgrade, bool const AutoRemove,
+                       OpProgress *Progress)
 {
 {
+   if (Progress != NULL)
+      Progress->SubProgress(Cache.Head().PackageCount, _("Send request to solver"));
+   unsigned long p = 0;
    string del, inst;
    string del, inst;
-   for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg)
+   for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg, ++p)
    {
    {
+      if (Progress != NULL && p % 100 == 0)
+         Progress->Progress(p);
       string* req;
       string* req;
-      if (Cache[Pkg].Delete() == true)
+      pkgDepCache::StateCache &P = Cache[Pkg];
+      if (P.Delete() == true)
         req = &del;
         req = &del;
-      else if (Cache[Pkg].NewInstall() == true || Cache[Pkg].Upgrade() == true)
+      else if (P.NewInstall() == true || P.Upgrade() == true || P.ReInstall() == true ||
+              (P.Mode == pkgDepCache::ModeKeep && (P.iFlags & pkgDepCache::Protected) == pkgDepCache::Protected))
         req = &inst;
       else
         continue;
       req->append(" ").append(Pkg.FullName());
    }
         req = &inst;
       else
         continue;
       req->append(" ").append(Pkg.FullName());
    }
-   fprintf(output, "Request: EDSP 0.2\n");
+   fprintf(output, "Request: EDSP 0.5\n");
+
+   const char *arch = _config->Find("APT::Architecture").c_str();
+   std::vector<string> archs = APT::Configuration::getArchitectures();
+   fprintf(output, "Architecture: %s\n", arch);
+   fprintf(output, "Architectures:");
+   for (std::vector<string>::const_iterator a = archs.begin(); a != archs.end(); ++a)
+       fprintf(output, " %s", a->c_str());
+   fprintf(output, "\n");
+
    if (del.empty() == false)
       fprintf(output, "Remove: %s\n", del.c_str()+1);
    if (inst.empty() == false)
    if (del.empty() == false)
       fprintf(output, "Remove: %s\n", del.c_str()+1);
    if (inst.empty() == false)
@@ -211,7 +279,7 @@ bool EDSP::WriteRequest(pkgDepCache &Cache, FILE* output, bool const Upgrade,
    if (_config->FindB("APT::Solver::Strict-Pinning", true) == false)
       fprintf(output, "Strict-Pinning: no\n");
    string solverpref("APT::Solver::");
    if (_config->FindB("APT::Solver::Strict-Pinning", true) == false)
       fprintf(output, "Strict-Pinning: no\n");
    string solverpref("APT::Solver::");
-   solverpref.append(_config->Find("APT::Solver::Name", "internal")).append("::Preferences");
+   solverpref.append(_config->Find("APT::Solver", "internal")).append("::Preferences");
    if (_config->Exists(solverpref) == true)
       fprintf(output, "Preferences: %s\n", _config->Find(solverpref,"").c_str());
    fprintf(output, "\n");
    if (_config->Exists(solverpref) == true)
       fprintf(output, "Preferences: %s\n", _config->Find(solverpref,"").c_str());
    fprintf(output, "\n");
@@ -220,21 +288,24 @@ bool EDSP::WriteRequest(pkgDepCache &Cache, FILE* output, bool const Upgrade,
 }
                                                                        /*}}}*/
 // EDSP::ReadResponse - from the given file descriptor                 /*{{{*/
 }
                                                                        /*}}}*/
 // EDSP::ReadResponse - from the given file descriptor                 /*{{{*/
-bool EDSP::ReadResponse(int const input, pkgDepCache &Cache) {
-       FileFd in;
-       in.OpenDescriptor(input, FileFd::ReadOnly);
-       pkgTagFile response(&in);
-       pkgTagSection section;
-
+bool EDSP::ReadResponse(int const input, pkgDepCache &Cache, OpProgress *Progress) {
        /* We build an map id to mmap offset here
           In theory we could use the offset as ID, but then VersionCount
           couldn't be used to create other versionmappings anymore and it
           would be too easy for a (buggy) solver to segfault APT… */
        unsigned long long const VersionCount = Cache.Head().VersionCount;
        unsigned long VerIdx[VersionCount];
        /* We build an map id to mmap offset here
           In theory we could use the offset as ID, but then VersionCount
           couldn't be used to create other versionmappings anymore and it
           would be too easy for a (buggy) solver to segfault APT… */
        unsigned long long const VersionCount = Cache.Head().VersionCount;
        unsigned long VerIdx[VersionCount];
-       for (pkgCache::PkgIterator P = Cache.PkgBegin(); P.end() == false; ++P)
+       for (pkgCache::PkgIterator P = Cache.PkgBegin(); P.end() == false; ++P) {
                for (pkgCache::VerIterator V = P.VersionList(); V.end() == false; ++V)
                        VerIdx[V->ID] = V.Index();
                for (pkgCache::VerIterator V = P.VersionList(); V.end() == false; ++V)
                        VerIdx[V->ID] = V.Index();
+               Cache[P].Marked = true;
+               Cache[P].Garbage = false;
+       }
+
+       FileFd in;
+       in.OpenDescriptor(input, FileFd::ReadOnly);
+       pkgTagFile response(&in, 100);
+       pkgTagSection section;
 
        while (response.Step(section) == true) {
                std::string type;
 
        while (response.Step(section) == true) {
                std::string type;
@@ -242,7 +313,29 @@ bool EDSP::ReadResponse(int const input, pkgDepCache &Cache) {
                        type = "Install";
                else if (section.Exists("Remove") == true)
                        type = "Remove";
                        type = "Install";
                else if (section.Exists("Remove") == true)
                        type = "Remove";
-               //FIXME: handle progress
+               else if (section.Exists("Progress") == true) {
+                       if (Progress != NULL) {
+                               string msg = section.FindS("Message");
+                               if (msg.empty() == true)
+                                       msg = _("Prepare for receiving solution");
+                               Progress->SubProgress(100, msg, section.FindI("Percentage", 0));
+                       }
+                       continue;
+               } else if (section.Exists("Error") == true) {
+                       std::string msg = SubstVar(SubstVar(section.FindS("Message"), "\n .\n", "\n\n"), "\n ", "\n");
+                       if (msg.empty() == true) {
+                               msg = _("External solver failed without a proper error message");
+                               _error->Error("%s", msg.c_str());
+                       } else
+                               _error->Error("External solver failed with: %s", msg.substr(0,msg.find('\n')).c_str());
+                       if (Progress != NULL)
+                               Progress->Done();
+                       std::cerr << "The solver encountered an error of type: " << section.FindS("Error") << std::endl;
+                       std::cerr << "The following information might help you to understand what is wrong:" << std::endl;
+                       std::cerr << msg << std::endl << std::endl;
+                       return false;
+               } else if (section.Exists("Autoremove") == true)
+                       type = "Autoremove";
                else
                        continue;
 
                else
                        continue;
 
@@ -258,9 +351,13 @@ bool EDSP::ReadResponse(int const input, pkgDepCache &Cache) {
                pkgCache::VerIterator Ver(Cache.GetCache(), Cache.GetCache().VerP + VerIdx[id]);
                Cache.SetCandidateVersion(Ver);
                if (type == "Install")
                pkgCache::VerIterator Ver(Cache.GetCache(), Cache.GetCache().VerP + VerIdx[id]);
                Cache.SetCandidateVersion(Ver);
                if (type == "Install")
-                       Cache.MarkInstall(Ver.ParentPkg(), false, false);
+                       Cache.MarkInstall(Ver.ParentPkg(), false, 0, false);
                else if (type == "Remove")
                        Cache.MarkDelete(Ver.ParentPkg(), false);
                else if (type == "Remove")
                        Cache.MarkDelete(Ver.ParentPkg(), false);
+               else if (type == "Autoremove") {
+                       Cache[Ver.ParentPkg()].Marked = false;
+                       Cache[Ver.ParentPkg()].Garbage = true;
+               }
        }
        return true;
 }
        }
        return true;
 }
@@ -348,6 +445,13 @@ bool EDSP::ReadRequest(int const input, std::list<std::string> &install,
            distUpgrade = EDSP::StringToBool(line.c_str() + 14, false);
         else if (line.compare(0, 11, "Autoremove:") == 0)
            autoRemove = EDSP::StringToBool(line.c_str() + 12, false);
            distUpgrade = EDSP::StringToBool(line.c_str() + 14, false);
         else if (line.compare(0, 11, "Autoremove:") == 0)
            autoRemove = EDSP::StringToBool(line.c_str() + 12, false);
+        else if (line.compare(0, 13, "Architecture:") == 0)
+           _config->Set("APT::Architecture", line.c_str() + 14);
+        else if (line.compare(0, 14, "Architectures:") == 0)
+        {
+           std::string const archs = line.c_str() + 15;
+           _config->Set("APT::Architectures", SubstVar(archs, " ", ","));
+        }
         else
            _error->Warning("Unknown line in EDSP Request stanza: %s", line.c_str());
 
         else
            _error->Warning("Unknown line in EDSP Request stanza: %s", line.c_str());
 
@@ -414,6 +518,12 @@ bool EDSP::WriteSolution(pkgDepCache &Cache, FILE* output)
         if (Debug == true)
            fprintf(output, "Package: %s\nVersion: %s\n", Pkg.FullName().c_str(), Cache.GetCandidateVer(Pkg).VerStr());
       }
         if (Debug == true)
            fprintf(output, "Package: %s\nVersion: %s\n", Pkg.FullName().c_str(), Cache.GetCandidateVer(Pkg).VerStr());
       }
+      else if (Cache[Pkg].Garbage == true)
+      {
+        fprintf(output, "Autoremove: %d\n", Pkg.CurrentVer()->ID);
+        if (Debug == true)
+           fprintf(output, "Package: %s\nVersion: %s\n", Pkg.FullName().c_str(), Pkg.CurrentVer().VerStr());
+      }
       else
         continue;
       fprintf(output, "\n");
       else
         continue;
       fprintf(output, "\n");
@@ -422,4 +532,102 @@ bool EDSP::WriteSolution(pkgDepCache &Cache, FILE* output)
    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/
-bool EDSP::WriteError(std::string const &message, FILE* output) { return false; }
+// EDSP::WriteProgess - pulse to the given file descriptor             /*{{{*/
+bool EDSP::WriteProgress(unsigned short const percent, const char* const message, FILE* output) {
+       fprintf(output, "Progress: %s\n", TimeRFC1123(time(NULL)).c_str());
+       fprintf(output, "Percentage: %d\n", percent);
+       fprintf(output, "Message: %s\n\n", message);
+       fflush(output);
+       return true;
+}
+                                                                       /*}}}*/
+// EDSP::WriteError - format an error message to be send to file descriptor /*{{{*/
+bool EDSP::WriteError(char const * const uuid, std::string const &message, FILE* output) {
+       fprintf(output, "Error: %s\n", uuid);
+       fprintf(output, "Message: %s\n\n", SubstVar(SubstVar(message, "\n\n", "\n.\n"), "\n", "\n ").c_str());
+       return true;
+}
+                                                                       /*}}}*/
+// EDSP::ExecuteSolver - fork requested solver and setup ipc pipes     {{{*/
+pid_t EDSP::ExecuteSolver(const char* const solver, int * const solver_in, int * const solver_out, bool) {
+       std::vector<std::string> const solverDirs = _config->FindVector("Dir::Bin::Solvers");
+       std::string file;
+       for (std::vector<std::string>::const_iterator dir = solverDirs.begin();
+            dir != solverDirs.end(); ++dir) {
+               file = flCombine(*dir, solver);
+               if (RealFileExists(file.c_str()) == true)
+                       break;
+               file.clear();
+       }
+
+       if (file.empty() == true)
+       {
+               _error->Error("Can't call external solver '%s' as it is not in a configured directory!", solver);
+               return 0;
+       }
+       int external[4] = {-1, -1, -1, -1};
+       if (pipe(external) != 0 || pipe(external + 2) != 0)
+       {
+               _error->Errno("Resolve", "Can't create needed IPC pipes for EDSP");
+               return 0;
+       }
+       for (int i = 0; i < 4; ++i)
+               SetCloseExec(external[i], true);
+
+       pid_t Solver = ExecFork();
+       if (Solver == 0) {
+               dup2(external[0], STDIN_FILENO);
+               dup2(external[3], STDOUT_FILENO);
+               const char* calling[2] = { file.c_str(), 0 };
+               execv(calling[0], (char**) calling);
+               std::cerr << "Failed to execute solver '" << solver << "'!" << std::endl;
+               _exit(100);
+       }
+       close(external[0]);
+       close(external[3]);
+
+       if (WaitFd(external[1], true, 5) == false)
+       {
+               _error->Errno("Resolve", "Timed out while Waiting on availability of solver stdin");
+               return 0;
+       }
+
+       *solver_in = external[1];
+       *solver_out = external[2];
+       return Solver;
+}
+bool EDSP::ExecuteSolver(const char* const solver, int *solver_in, int *solver_out) {
+   if (ExecuteSolver(solver, solver_in, solver_out, true) == 0)
+      return false;
+   return true;
+}
+                                                                       /*}}}*/
+// EDSP::ResolveExternal - resolve problems by asking external for help        {{{*/
+bool EDSP::ResolveExternal(const char* const solver, pkgDepCache &Cache,
+                        bool const upgrade, bool const distUpgrade,
+                        bool const autoRemove, OpProgress *Progress) {
+       int solver_in, solver_out;
+       pid_t const solver_pid = EDSP::ExecuteSolver(solver, &solver_in, &solver_out, true);
+       if (solver_pid == 0)
+               return false;
+
+       FILE* output = fdopen(solver_in, "w");
+       if (output == NULL)
+               return _error->Errno("Resolve", "fdopen on solver stdin failed");
+
+       if (Progress != NULL)
+               Progress->OverallProgress(0, 100, 5, _("Execute external solver"));
+       EDSP::WriteRequest(Cache, output, upgrade, distUpgrade, autoRemove, Progress);
+       if (Progress != NULL)
+               Progress->OverallProgress(5, 100, 20, _("Execute external solver"));
+       EDSP::WriteScenario(Cache, output, Progress);
+       fclose(output);
+
+       if (Progress != NULL)
+               Progress->OverallProgress(25, 100, 75, _("Execute external solver"));
+       if (EDSP::ReadResponse(solver_out, Cache, Progress) == false)
+               return false;
+
+       return ExecWait(solver_pid, solver);
+}
+                                                                       /*}}}*/