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-rw-r--r--cmdline/apt-internal-planner.cc195
1 files changed, 195 insertions, 0 deletions
diff --git a/cmdline/apt-internal-planner.cc b/cmdline/apt-internal-planner.cc
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+// -*- mode: cpp; mode: fold -*-
+// Description /*{{{*/
+/* #####################################################################
+
+ cover around the internal solver to be able to run it like an external
+
+ ##################################################################### */
+ /*}}}*/
+// Include Files /*{{{*/
+#include <config.h>
+
+#include <apt-pkg/cachefile.h>
+#include <apt-pkg/cacheset.h>
+#include <apt-pkg/cmndline.h>
+#include <apt-pkg/configuration.h>
+#include <apt-pkg/depcache.h>
+#include <apt-pkg/edsp.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/init.h>
+#include <apt-pkg/packagemanager.h>
+#include <apt-pkg/pkgcache.h>
+#include <apt-pkg/pkgsystem.h>
+#include <apt-pkg/prettyprinters.h>
+#include <apt-pkg/strutl.h>
+
+#include <apt-private/private-cmndline.h>
+#include <apt-private/private-main.h>
+#include <apt-private/private-output.h>
+
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <iostream>
+#include <list>
+#include <sstream>
+#include <string>
+#include <unistd.h>
+
+#include <apti18n.h>
+ /*}}}*/
+
+static bool ShowHelp(CommandLine &) /*{{{*/
+{
+ std::cout <<
+ _("Usage: apt-internal-planner\n"
+ "\n"
+ "apt-internal-planner is an interface to use the current internal\n"
+ "installation planner for the APT family like an external one,\n"
+ "for debugging or the like.\n");
+ return true;
+}
+ /*}}}*/
+APT_NORETURN static void DIE(std::string const &message) { /*{{{*/
+ std::cerr << "ERROR: " << message << std::endl;
+ _error->DumpErrors(std::cerr);
+ exit(EXIT_FAILURE);
+}
+ /*}}}*/
+static std::vector<aptDispatchWithHelp> GetCommands() /*{{{*/
+{
+ return {};
+}
+ /*}}}*/
+class PMOutput: public pkgPackageManager /*{{{*/
+{
+ FileFd &output;
+ bool const Debug;
+
+protected:
+ virtual bool Install(PkgIterator Pkg,std::string) APT_OVERRIDE
+ {
+ //std::cerr << "INSTALL: " << APT::PrettyPkg(&Cache, Pkg) << std::endl;
+ return EDSP::WriteSolutionStanza(output, "Unpack", Cache[Pkg].InstVerIter(Cache));
+ }
+ virtual bool Configure(PkgIterator Pkg) APT_OVERRIDE
+ {
+ //std::cerr << "CONFIGURE: " << APT::PrettyPkg(&Cache, Pkg) << " " << std::endl;
+ return EDSP::WriteSolutionStanza(output, "Configure", Cache[Pkg].InstVerIter(Cache));
+ }
+ virtual bool Remove(PkgIterator Pkg,bool) APT_OVERRIDE
+ {
+ //std::cerr << "REMOVE: " << APT::PrettyPkg(&Cache, Pkg) << " " << std::endl;
+ return EDSP::WriteSolutionStanza(output, "Remove", Pkg.CurrentVer());
+ }
+public:
+ PMOutput(pkgDepCache *Cache, FileFd &file) : pkgPackageManager(Cache), output(file),
+ Debug(_config->FindB("Debug::EDSP::WriteSolution", false))
+ {}
+
+ bool ApplyRequest(std::list<std::pair<std::string,EIPP::PKG_ACTION>> const &actions)
+ {
+ for (auto && a: actions)
+ {
+ auto const Pkg = Cache.FindPkg(a.first);
+ if (unlikely(Pkg.end() == true))
+ continue;
+ switch (a.second)
+ {
+ case EIPP::PKG_ACTION::NOOP:
+ break;
+ case EIPP::PKG_ACTION::INSTALL:
+ case EIPP::PKG_ACTION::REINSTALL:
+ FileNames[Pkg->ID] = "EIPP";
+ break;
+ case EIPP::PKG_ACTION::REMOVE:
+ break;
+ }
+ }
+ return true;
+ }
+};
+ /*}}}*/
+int main(int argc,const char *argv[]) /*{{{*/
+{
+ // we really don't need anything
+ DropPrivileges();
+
+ CommandLine CmdL;
+ ParseCommandLine(CmdL, APT_CMD::APT_INTERNAL_PLANNER, &_config, NULL, argc, argv, &ShowHelp, &GetCommands);
+
+ // Deal with stdout not being a tty
+ if (!isatty(STDOUT_FILENO) && _config->FindI("quiet", -1) == -1)
+ _config->Set("quiet","1");
+
+ if (_config->FindI("quiet", 0) < 1)
+ _config->Set("Debug::EIPP::WriteSolution", true);
+
+ _config->Set("APT::System", "Debian APT planner interface");
+ _config->Set("APT::Planner", "internal");
+ _config->Set("eipp::scenario", "/nonexistent/stdin");
+ FileFd output;
+ if (output.OpenDescriptor(STDOUT_FILENO, FileFd::WriteOnly | FileFd::BufferedWrite, true) == false)
+ DIE("stdout couldn't be opened");
+ int const input = STDIN_FILENO;
+ SetNonBlock(input, false);
+
+ EDSP::WriteProgress(0, "Start up planner…", output);
+
+ if (pkgInitSystem(*_config,_system) == false)
+ DIE("System could not be initialized!");
+
+ EDSP::WriteProgress(1, "Read request…", output);
+
+ if (WaitFd(input, false, 5) == false)
+ DIE("WAIT timed out in the planner");
+
+ std::list<std::pair<std::string,EIPP::PKG_ACTION>> actions;
+ unsigned int flags;
+ if (EIPP::ReadRequest(input, actions, flags) == false)
+ DIE("Parsing the request failed!");
+ _config->Set("APT::Immediate-Configure", (flags & EIPP::Request::NO_IMMEDIATE_CONFIGURATION) == 0);
+ _config->Set("APT::Immediate-Configure-All", (flags & EIPP::Request::IMMEDIATE_CONFIGURATION_ALL) != 0);
+ _config->Set("APT::Force-LoopBreak", (flags & EIPP::Request::ALLOW_TEMPORARY_REMOVE_OF_ESSENTIALS) != 0);
+
+ EDSP::WriteProgress(5, "Read scenario…", output);
+
+ pkgCacheFile CacheFile;
+ if (CacheFile.Open(NULL, false) == false)
+ DIE("Failed to open CacheFile!");
+
+ EDSP::WriteProgress(50, "Apply request on scenario…", output);
+
+ if (EIPP::ApplyRequest(actions, CacheFile) == false)
+ DIE("Failed to apply request to depcache!");
+
+ EDSP::WriteProgress(60, "Call orderinstall on current scenario…", output);
+
+ //_config->Set("Debug::pkgOrderList", true);
+ //_config->Set("Debug::pkgPackageManager", true);
+ PMOutput PM(CacheFile, output);
+ if (PM.ApplyRequest(actions) == false)
+ DIE("Failed to apply request to packagemanager!");
+ pkgPackageManager::OrderResult const Res = PM.DoInstallPreFork();
+ std::ostringstream broken;
+ switch (Res)
+ {
+ case pkgPackageManager::Completed:
+ EDSP::WriteProgress(100, "Done", output);
+ break;
+ case pkgPackageManager::Incomplete:
+ broken << "Planner could only incompletely plan an installation order!" << std::endl;
+ _error->DumpErrors(broken, GlobalError::DEBUG);
+ EDSP::WriteError("pm-incomplete", broken.str(), output);
+ break;
+ case pkgPackageManager::Failed:
+ broken << "Planner failed to find an installation order!" << std::endl;
+ _error->DumpErrors(broken, GlobalError::DEBUG);
+ EDSP::WriteError("pm-failed", broken.str(), output);
+ break;
+ }
+
+ return DispatchCommandLine(CmdL, {});
+}
+ /*}}}*/