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-rw-r--r--apt-pkg/edsp.cc566
1 files changed, 566 insertions, 0 deletions
diff --git a/apt-pkg/edsp.cc b/apt-pkg/edsp.cc
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+++ b/apt-pkg/edsp.cc
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+// -*- mode: cpp; mode: fold -*-
+// Description /*{{{*/
+/* ######################################################################
+ Set of methods to help writing and reading everything needed for EDSP
+ ##################################################################### */
+ /*}}}*/
+// Include Files /*{{{*/
+#include <config.h>
+
+#include <apt-pkg/edsp.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/configuration.h>
+#include <apt-pkg/version.h>
+#include <apt-pkg/policy.h>
+#include <apt-pkg/tagfile.h>
+
+#include <limits>
+#include <stdio.h>
+
+#include <apti18n.h>
+ /*}}}*/
+
+// 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", "Pre-Depends", "Suggests",
+ "Recommends" , "Conflicts", "Replaces",
+ "Obsoletes", "Breaks", "Enhances"};
+
+// EDSP::WriteScenario - to the given file descriptor /*{{{*/
+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;
+ for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg)
+ for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; ++Ver, ++p)
+ {
+ WriteScenarioVersion(Cache, output, Pkg, Ver);
+ WriteScenarioDependency(Cache, output, Pkg, Ver);
+ 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,
+ APT::PackageSet const &pkgset,
+ OpProgress *Progress)
+{
+ 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);
+ WriteScenarioLimitedDependency(Cache, output, Pkg, Ver, pkgset);
+ fprintf(output, "\n");
+ if (Progress != NULL && p % 100 == 0)
+ Progress->Progress(p);
+ }
+ if (Progress != NULL)
+ Progress->Done();
+ return true;
+}
+ /*}}}*/
+// EDSP::WriteScenarioVersion /*{{{*/
+void EDSP::WriteScenarioVersion(pkgDepCache &Cache, FILE* output, pkgCache::PkgIterator const &Pkg,
+ pkgCache::VerIterator const &Ver)
+{
+ fprintf(output, "Package: %s\n", Pkg.Name());
+ 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 ||
+ (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());
+ if ((Ver->MultiArch & pkgCache::Version::Allowed) == pkgCache::Version::Allowed)
+ fprintf(output, "Multi-Arch: allowed\n");
+ else if ((Ver->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign)
+ fprintf(output, "Multi-Arch: foreign\n");
+ 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();
+ for (pkgCache::VerFileIterator File = Ver.FileList(); File.end() == false; ++File) {
+ signed short const p = Cache.GetPolicy().GetPriority(File.File());
+ if (Pin < p)
+ Pin = p;
+ }
+ fprintf(output, "APT-Pin: %d\n", Pin);
+ if (Cache.GetCandidateVer(Pkg) == Ver)
+ fprintf(output, "APT-Candidate: yes\n");
+ if ((Cache[Pkg].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto)
+ fprintf(output, "APT-Automatic: yes\n");
+}
+ /*}}}*/
+// EDSP::WriteScenarioDependency /*{{{*/
+void EDSP::WriteScenarioDependency(pkgDepCache &Cache, FILE* output, pkgCache::PkgIterator const &Pkg,
+ pkgCache::VerIterator const &Ver)
+{
+ 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)
+ continue;
+ if (orGroup == false)
+ dependencies[Dep->Type].append(", ");
+ dependencies[Dep->Type].append(Dep.TargetPkg().Name());
+ if (Dep->Version != 0)
+ dependencies[Dep->Type].append(" (").append(pkgCache::CompTypeDeb(Dep->CompareOp)).append(" ").append(Dep.TargetVer()).append(")");
+ if ((Dep->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or)
+ {
+ dependencies[Dep->Type].append(" | ");
+ orGroup = true;
+ }
+ else
+ orGroup = false;
+ }
+ for (int i = 1; i < pkgCache::Dep::Enhances + 1; ++i)
+ if (dependencies[i].empty() == false)
+ fprintf(output, "%s: %s\n", DepMap[i], dependencies[i].c_str()+2);
+ 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)
+ continue;
+ provides.append(", ").append(Prv.Name());
+ }
+ if (provides.empty() == false)
+ fprintf(output, "Provides: %s\n", provides.c_str()+2);
+}
+ /*}}}*/
+// EDSP::WriteScenarioLimitedDependency /*{{{*/
+void EDSP::WriteScenarioLimitedDependency(pkgDepCache &Cache, FILE* output,
+ pkgCache::PkgIterator const &Pkg,
+ pkgCache::VerIterator const &Ver,
+ APT::PackageSet const &pkgset)
+{
+ 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)
+ continue;
+ if (orGroup == false)
+ {
+ if (pkgset.find(Dep.TargetPkg()) == pkgset.end())
+ continue;
+ dependencies[Dep->Type].append(", ");
+ }
+ else if (pkgset.find(Dep.TargetPkg()) == pkgset.end())
+ {
+ if ((Dep->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or)
+ continue;
+ dependencies[Dep->Type].erase(dependencies[Dep->Type].end()-3, dependencies[Dep->Type].end());
+ orGroup = false;
+ continue;
+ }
+ dependencies[Dep->Type].append(Dep.TargetPkg().Name());
+ if (Dep->Version != 0)
+ dependencies[Dep->Type].append(" (").append(pkgCache::CompTypeDeb(Dep->CompareOp)).append(" ").append(Dep.TargetVer()).append(")");
+ if ((Dep->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or)
+ {
+ dependencies[Dep->Type].append(" | ");
+ orGroup = true;
+ }
+ else
+ orGroup = false;
+ }
+ for (int i = 1; i < pkgCache::Dep::Enhances + 1; ++i)
+ if (dependencies[i].empty() == false)
+ fprintf(output, "%s: %s\n", DepMap[i], dependencies[i].c_str()+2);
+ 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)
+ continue;
+ if (pkgset.find(Prv.ParentPkg()) == pkgset.end())
+ continue;
+ provides.append(", ").append(Prv.Name());
+ }
+ if (provides.empty() == false)
+ fprintf(output, "Provides: %s\n", provides.c_str()+2);
+}
+ /*}}}*/
+// EDSP::WriteRequest - to the given file descriptor /*{{{*/
+bool EDSP::WriteRequest(pkgDepCache &Cache, FILE* output, bool const Upgrade,
+ 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;
+ for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg, ++p)
+ {
+ if (Progress != NULL && p % 100 == 0)
+ Progress->Progress(p);
+ string* req;
+ if (Cache[Pkg].Delete() == true)
+ req = &del;
+ else if (Cache[Pkg].NewInstall() == true || Cache[Pkg].Upgrade() == true)
+ req = &inst;
+ else
+ continue;
+ req->append(" ").append(Pkg.FullName());
+ }
+ fprintf(output, "Request: EDSP 0.4\n");
+ if (del.empty() == false)
+ fprintf(output, "Remove: %s\n", del.c_str()+1);
+ if (inst.empty() == false)
+ fprintf(output, "Install: %s\n", inst.c_str()+1);
+ if (Upgrade == true)
+ fprintf(output, "Upgrade: yes\n");
+ if (DistUpgrade == true)
+ fprintf(output, "Dist-Upgrade: yes\n");
+ if (AutoRemove == true)
+ fprintf(output, "Autoremove: yes\n");
+ 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", "internal")).append("::Preferences");
+ if (_config->Exists(solverpref) == true)
+ fprintf(output, "Preferences: %s\n", _config->Find(solverpref,"").c_str());
+ fprintf(output, "\n");
+
+ return true;
+}
+ /*}}}*/
+// EDSP::ReadResponse - from the given file descriptor /*{{{*/
+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];
+ 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();
+ 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;
+ if (section.Exists("Install") == true)
+ type = "Install";
+ else if (section.Exists("Remove") == true)
+ type = "Remove";
+ 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(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;
+
+ size_t const id = section.FindULL(type.c_str(), VersionCount);
+ if (id == VersionCount) {
+ _error->Warning("Unable to parse %s request with id value '%s'!", type.c_str(), section.FindS(type.c_str()).c_str());
+ continue;
+ } else if (id > Cache.Head().VersionCount) {
+ _error->Warning("ID value '%s' in %s request stanza is to high to refer to a known version!", section.FindS(type.c_str()).c_str(), type.c_str());
+ continue;
+ }
+
+ pkgCache::VerIterator Ver(Cache.GetCache(), Cache.GetCache().VerP + VerIdx[id]);
+ Cache.SetCandidateVersion(Ver);
+ if (type == "Install")
+ Cache.MarkInstall(Ver.ParentPkg(), false, 0, 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;
+}
+ /*}}}*/
+// EDSP::ReadLine - first line from the given file descriptor /*{{{*/
+// ---------------------------------------------------------------------
+/* Little helper method to read a complete line into a string. Similar to
+ fgets but we need to use the low-level read() here as otherwise the
+ listparser will be confused later on as mixing of fgets and read isn't
+ a supported action according to the manpages and results are undefined */
+bool EDSP::ReadLine(int const input, std::string &line) {
+ char one;
+ ssize_t data = 0;
+ line.erase();
+ line.reserve(100);
+ while ((data = read(input, &one, sizeof(one))) != -1) {
+ if (data != 1)
+ continue;
+ if (one == '\n')
+ return true;
+ if (one == '\r')
+ continue;
+ if (line.empty() == true && isblank(one) != 0)
+ continue;
+ line += one;
+ }
+ return false;
+}
+ /*}}}*/
+// EDSP::StringToBool - convert yes/no to bool /*{{{*/
+// ---------------------------------------------------------------------
+/* we are not as lazy as we are in the global StringToBool as we really
+ only accept yes/no here - but we will ignore leading spaces */
+bool EDSP::StringToBool(char const *answer, bool const defValue) {
+ for (; isspace(*answer) != 0; ++answer);
+ if (strncasecmp(answer, "yes", 3) == 0)
+ return true;
+ else if (strncasecmp(answer, "no", 2) == 0)
+ return false;
+ else
+ _error->Warning("Value '%s' is not a boolean 'yes' or 'no'!", answer);
+ return defValue;
+}
+ /*}}}*/
+// EDSP::ReadRequest - first stanza from the given file descriptor /*{{{*/
+bool EDSP::ReadRequest(int const input, std::list<std::string> &install,
+ std::list<std::string> &remove, bool &upgrade,
+ bool &distUpgrade, bool &autoRemove)
+{
+ install.clear();
+ remove.clear();
+ upgrade = false;
+ distUpgrade = false;
+ autoRemove = false;
+ std::string line;
+ while (ReadLine(input, line) == true)
+ {
+ // Skip empty lines before request
+ if (line.empty() == true)
+ continue;
+ // The first Tag must be a request, so search for it
+ if (line.compare(0, 8, "Request:") != 0)
+ continue;
+
+ while (ReadLine(input, line) == true)
+ {
+ // empty lines are the end of the request
+ if (line.empty() == true)
+ return true;
+
+ std::list<std::string> *request = NULL;
+ if (line.compare(0, 8, "Install:") == 0)
+ {
+ line.erase(0, 8);
+ request = &install;
+ }
+ else if (line.compare(0, 7, "Remove:") == 0)
+ {
+ line.erase(0, 7);
+ request = &remove;
+ }
+ else if (line.compare(0, 8, "Upgrade:") == 0)
+ upgrade = EDSP::StringToBool(line.c_str() + 9, false);
+ else if (line.compare(0, 13, "Dist-Upgrade:") == 0)
+ 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
+ _error->Warning("Unknown line in EDSP Request stanza: %s", line.c_str());
+
+ if (request == NULL)
+ continue;
+ size_t end = line.length();
+ do {
+ size_t begin = line.rfind(' ');
+ if (begin == std::string::npos)
+ {
+ request->push_back(line.substr(0, end));
+ break;
+ }
+ else if (begin < end)
+ request->push_back(line.substr(begin + 1, end));
+ line.erase(begin);
+ end = line.find_last_not_of(' ');
+ } while (end != std::string::npos);
+ }
+ }
+ return false;
+}
+ /*}}}*/
+// EDSP::ApplyRequest - first stanza from the given file descriptor /*{{{*/
+bool EDSP::ApplyRequest(std::list<std::string> const &install,
+ std::list<std::string> const &remove,
+ pkgDepCache &Cache)
+{
+ for (std::list<std::string>::const_iterator i = install.begin();
+ i != install.end(); ++i) {
+ pkgCache::PkgIterator P = Cache.FindPkg(*i);
+ if (P.end() == true)
+ _error->Warning("Package %s is not known, so can't be installed", i->c_str());
+ else
+ Cache.MarkInstall(P, false);
+ }
+
+ for (std::list<std::string>::const_iterator i = remove.begin();
+ i != remove.end(); ++i) {
+ pkgCache::PkgIterator P = Cache.FindPkg(*i);
+ if (P.end() == true)
+ _error->Warning("Package %s is not known, so can't be installed", i->c_str());
+ else
+ Cache.MarkDelete(P);
+ }
+ return true;
+}
+ /*}}}*/
+// EDSP::WriteSolution - to the given file descriptor /*{{{*/
+bool EDSP::WriteSolution(pkgDepCache &Cache, FILE* output)
+{
+ bool const Debug = _config->FindB("Debug::EDSP::WriteSolution", false);
+ for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); Pkg.end() == false; ++Pkg)
+ {
+ if (Cache[Pkg].Delete() == true)
+ {
+ fprintf(output, "Remove: %d\n", Pkg.CurrentVer()->ID);
+ if (Debug == true)
+ fprintf(output, "Package: %s\nVersion: %s\n", Pkg.FullName().c_str(), Pkg.CurrentVer().VerStr());
+ }
+ else if (Cache[Pkg].NewInstall() == true || Cache[Pkg].Upgrade() == true)
+ {
+ fprintf(output, "Install: %d\n", Cache.GetCandidateVer(Pkg)->ID);
+ 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());
+ fprintf(stderr, "Autoremove: %s\nVersion: %s\n", Pkg.FullName().c_str(), Pkg.CurrentVer().VerStr());
+ }
+ else
+ continue;
+ fprintf(output, "\n");
+ }
+
+ return true;
+}
+ /*}}}*/
+// 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 {{{*/
+bool EDSP::ExecuteSolver(const char* const solver, int *solver_in, int *solver_out) {
+ 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)
+ return _error->Error("Can't call external solver '%s' as it is not in a configured directory!", solver);
+ int external[4] = {-1, -1, -1, -1};
+ if (pipe(external) != 0 || pipe(external + 2) != 0)
+ return _error->Errno("Resolve", "Can't create needed IPC pipes for EDSP");
+ 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)
+ return _error->Errno("Resolve", "Timed out while Waiting on availability of solver stdin");
+
+ *solver_in = external[1];
+ *solver_out = external[2];
+ 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;
+ if (EDSP::ExecuteSolver(solver, &solver_in, &solver_out) == false)
+ 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 true;
+}
+ /*}}}*/
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