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-rw-r--r--apt-pkg/statechanges.cc227
1 files changed, 227 insertions, 0 deletions
diff --git a/apt-pkg/statechanges.cc b/apt-pkg/statechanges.cc
new file mode 100644
index 000000000..35af45538
--- /dev/null
+++ b/apt-pkg/statechanges.cc
@@ -0,0 +1,227 @@
+#include <apt-pkg/pkgcache.h>
+#include <apt-pkg/cacheset.h>
+#include <apt-pkg/debsystem.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/statechanges.h>
+#include <apt-pkg/prettyprinters.h>
+
+#include <algorithm>
+#include <memory>
+
+namespace APT
+{
+
+class StateChanges::Private
+{
+public:
+ APT::VersionVector hold;
+ APT::VersionVector unhold;
+ APT::VersionVector install;
+ APT::VersionVector deinstall;
+ APT::VersionVector purge;
+ APT::VersionVector error;
+};
+
+#define APT_GETTERSETTER(Name, Container) \
+void StateChanges::Name(pkgCache::VerIterator const &Ver) \
+{ \
+ if (Ver.end() == false) \
+ Container.push_back(Ver); \
+}\
+APT::VersionVector& StateChanges::Name() \
+{ \
+ return Container; \
+}
+APT_GETTERSETTER(Hold, d->hold)
+APT_GETTERSETTER(Unhold, d->unhold)
+APT_GETTERSETTER(Install, d->install)
+APT_GETTERSETTER(Remove, d->deinstall)
+APT_GETTERSETTER(Purge, d->purge)
+#undef APT_GETTERSETTER
+APT::VersionVector& StateChanges::Error()
+{
+ return d->error;
+}
+
+void StateChanges::clear()
+{
+ d->hold.clear();
+ d->unhold.clear();
+ d->install.clear();
+ d->deinstall.clear();
+ d->purge.clear();
+ d->error.clear();
+}
+
+bool StateChanges::empty() const
+{
+ return d->hold.empty() &&
+ d->unhold.empty() &&
+ d->install.empty() &&
+ d->deinstall.empty() &&
+ d->purge.empty() &&
+ d->error.empty();
+}
+
+bool StateChanges::Save(bool const DiscardOutput)
+{
+ bool const Debug = _config->FindB("Debug::pkgDpkgPm", false);
+ d->error.clear();
+ if (d->hold.empty() && d->unhold.empty() && d->install.empty() && d->deinstall.empty() && d->purge.empty())
+ return true;
+
+ std::vector<std::string> Args = debSystem::GetDpkgBaseCommand();
+ // ensure dpkg knows about the package so that it keeps the status we set
+ if (d->hold.empty() == false || d->install.empty() == false)
+ {
+ APT::VersionVector makeDpkgAvailable;
+ auto const notInstalled = [](pkgCache::VerIterator const &V) { return V.ParentPkg()->CurrentVer == 0; };
+ std::copy_if(d->hold.begin(), d->hold.end(), std::back_inserter(makeDpkgAvailable), notInstalled);
+ std::copy_if(d->install.begin(), d->install.end(), std::back_inserter(makeDpkgAvailable), notInstalled);
+
+ if (makeDpkgAvailable.empty() == false)
+ {
+ auto const BaseArgs = Args.size();
+ Args.push_back("--merge-avail");
+ // FIXME: supported only since 1.17.7 in dpkg
+ Args.push_back("-");
+ int dummyAvail = -1;
+ if (Debug)
+ {
+ for (auto const &V: makeDpkgAvailable)
+ {
+ std::clog << "echo 'Dummy record for " << V.ParentPkg().FullName(false) << "' | ";
+ std::copy(Args.begin(), Args.end(), std::ostream_iterator<std::string>(std::clog, " "));
+ std::clog << std::endl;
+ }
+ }
+ else
+ {
+ pid_t const dpkgMergeAvail = debSystem::ExecDpkg(Args, &dummyAvail, nullptr, true);
+
+ FILE* dpkg = fdopen(dummyAvail, "w");
+ for (auto const &V: makeDpkgAvailable)
+ fprintf(dpkg, "Package: %s\nVersion: 0~\nArchitecture: %s\nMaintainer: Dummy Example <dummy@example.org>\n"
+ "Description: dummy package record\n A record is needed to put a package on hold, so here it is.\n\n", V.ParentPkg().Name(), V.Arch());
+ fclose(dpkg);
+
+ ExecWait(dpkgMergeAvail, "dpkg --merge-avail", true);
+ }
+ Args.erase(Args.begin() + BaseArgs, Args.end());
+ }
+ }
+ bool const dpkgMultiArch = _system->MultiArchSupported();
+
+ Args.push_back("--set-selections");
+ if (Debug)
+ {
+ std::string state;
+ auto const dpkgName = [&](pkgCache::VerIterator const &V) {
+ pkgCache::PkgIterator P = V.ParentPkg();
+ if (strcmp(V.Arch(), "none") == 0)
+ ioprintf(std::clog, "echo '%s %s' | ", P.Name(), state.c_str());
+ else if (dpkgMultiArch == false)
+ ioprintf(std::clog, "echo '%s %s' | ", P.FullName(true).c_str(), state.c_str());
+ else
+ ioprintf(std::clog, "echo '%s:%s %s' | ", P.Name(), V.Arch(), state.c_str());
+ std::copy(Args.begin(), Args.end(), std::ostream_iterator<std::string>(std::clog, " "));
+ std::clog << std::endl;
+ };
+ for (auto const &V: d->unhold)
+ {
+ if (V.ParentPkg()->CurrentVer != 0)
+ state = "install";
+ else
+ state = "deinstall";
+ dpkgName(V);
+ }
+ if (d->purge.empty() == false)
+ {
+ state = "purge";
+ std::for_each(d->purge.begin(), d->purge.end(), dpkgName);
+ }
+ if (d->deinstall.empty() == false)
+ {
+ state = "deinstall";
+ std::for_each(d->deinstall.begin(), d->deinstall.end(), dpkgName);
+ }
+ if (d->hold.empty() == false)
+ {
+ state = "hold";
+ std::for_each(d->hold.begin(), d->hold.end(), dpkgName);
+ }
+ if (d->install.empty() == false)
+ {
+ state = "install";
+ std::for_each(d->install.begin(), d->install.end(), dpkgName);
+ }
+ }
+ else
+ {
+ int selections = -1;
+ pid_t const dpkgSelections = debSystem::ExecDpkg(Args, &selections, nullptr, DiscardOutput);
+
+ FILE* dpkg = fdopen(selections, "w");
+ std::string state;
+ auto const dpkgName = [&](pkgCache::VerIterator const &V) {
+ pkgCache::PkgIterator P = V.ParentPkg();
+ if (strcmp(V.Arch(), "none") == 0)
+ fprintf(dpkg, "%s %s\n", P.Name(), state.c_str());
+ else if (dpkgMultiArch == false)
+ fprintf(dpkg, "%s %s\n", P.FullName(true).c_str(), state.c_str());
+ else
+ fprintf(dpkg, "%s:%s %s\n", P.Name(), V.Arch(), state.c_str());
+ };
+ for (auto const &V: d->unhold)
+ {
+ if (V.ParentPkg()->CurrentVer != 0)
+ state = "install";
+ else
+ state = "deinstall";
+ dpkgName(V);
+ }
+ if (d->purge.empty() == false)
+ {
+ state = "purge";
+ std::for_each(d->purge.begin(), d->purge.end(), dpkgName);
+ }
+ if (d->deinstall.empty() == false)
+ {
+ state = "deinstall";
+ std::for_each(d->deinstall.begin(), d->deinstall.end(), dpkgName);
+ }
+ if (d->hold.empty() == false)
+ {
+ state = "hold";
+ std::for_each(d->hold.begin(), d->hold.end(), dpkgName);
+ }
+ if (d->install.empty() == false)
+ {
+ state = "install";
+ std::for_each(d->install.begin(), d->install.end(), dpkgName);
+ }
+ fclose(dpkg);
+
+ if (ExecWait(dpkgSelections, "dpkg --set-selections") == false)
+ {
+ std::move(d->purge.begin(), d->purge.end(), std::back_inserter(d->error));
+ d->purge.clear();
+ std::move(d->deinstall.begin(), d->deinstall.end(), std::back_inserter(d->error));
+ d->deinstall.clear();
+ std::move(d->hold.begin(), d->hold.end(), std::back_inserter(d->error));
+ d->hold.clear();
+ std::move(d->unhold.begin(), d->unhold.end(), std::back_inserter(d->error));
+ d->unhold.clear();
+ std::move(d->install.begin(), d->install.end(), std::back_inserter(d->error));
+ d->install.clear();
+ }
+ }
+ return d->error.empty();
+}
+
+StateChanges::StateChanges() : d(new StateChanges::Private()) {}
+StateChanges::StateChanges(StateChanges&&) = default;
+StateChanges& StateChanges::operator=(StateChanges&&) = default;
+StateChanges::~StateChanges() = default;
+
+}
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