| 1 | // -*- mode: cpp; mode: fold -*- |
| 2 | // Description /*{{{*/ |
| 3 | /* ##################################################################### |
| 4 | |
| 5 | cover around the internal solver to be able to run it like an external |
| 6 | |
| 7 | ##################################################################### */ |
| 8 | /*}}}*/ |
| 9 | // Include Files /*{{{*/ |
| 10 | #include <config.h> |
| 11 | |
| 12 | #include <apt-pkg/error.h> |
| 13 | #include <apt-pkg/cmndline.h> |
| 14 | #include <apt-pkg/init.h> |
| 15 | #include <apt-pkg/cachefile.h> |
| 16 | #include <apt-pkg/cacheset.h> |
| 17 | #include <apt-pkg/strutl.h> |
| 18 | #include <apt-pkg/edsp.h> |
| 19 | #include <apt-pkg/algorithms.h> |
| 20 | #include <apt-pkg/fileutl.h> |
| 21 | #include <apt-pkg/pkgsystem.h> |
| 22 | #include <apt-pkg/upgrade.h> |
| 23 | #include <apt-pkg/configuration.h> |
| 24 | #include <apt-pkg/depcache.h> |
| 25 | #include <apt-pkg/pkgcache.h> |
| 26 | #include <apt-pkg/cacheiterators.h> |
| 27 | |
| 28 | #include <apt-private/private-output.h> |
| 29 | #include <apt-private/private-cmndline.h> |
| 30 | #include <apt-private/private-main.h> |
| 31 | |
| 32 | #include <string.h> |
| 33 | #include <iostream> |
| 34 | #include <sstream> |
| 35 | #include <list> |
| 36 | #include <string> |
| 37 | #include <unistd.h> |
| 38 | #include <cstdio> |
| 39 | #include <stdlib.h> |
| 40 | |
| 41 | #include <apti18n.h> |
| 42 | /*}}}*/ |
| 43 | |
| 44 | static bool ShowHelp(CommandLine &) /*{{{*/ |
| 45 | { |
| 46 | std::cout << |
| 47 | _("Usage: apt-internal-solver\n" |
| 48 | "\n" |
| 49 | "apt-internal-solver is an interface to use the current internal\n" |
| 50 | "resolver for the APT family like an external one, for debugging or\n" |
| 51 | "the like.\n"); |
| 52 | return true; |
| 53 | } |
| 54 | /*}}}*/ |
| 55 | APT_NORETURN static void DIE(std::string const &message) { /*{{{*/ |
| 56 | std::cerr << "ERROR: " << message << std::endl; |
| 57 | _error->DumpErrors(std::cerr); |
| 58 | exit(EXIT_FAILURE); |
| 59 | } |
| 60 | /*}}}*/ |
| 61 | static std::vector<aptDispatchWithHelp> GetCommands() /*{{{*/ |
| 62 | { |
| 63 | return {}; |
| 64 | } |
| 65 | /*}}}*/ |
| 66 | int main(int argc,const char *argv[]) /*{{{*/ |
| 67 | { |
| 68 | InitLocale(); |
| 69 | |
| 70 | // we really don't need anything |
| 71 | DropPrivileges(); |
| 72 | |
| 73 | CommandLine CmdL; |
| 74 | ParseCommandLine(CmdL, APT_CMD::APT_INTERNAL_SOLVER, &_config, NULL, argc, argv, &ShowHelp, &GetCommands); |
| 75 | |
| 76 | if (CmdL.FileList[0] != 0 && strcmp(CmdL.FileList[0], "scenario") == 0) |
| 77 | { |
| 78 | if (pkgInitSystem(*_config,_system) == false) { |
| 79 | std::cerr << "System could not be initialized!" << std::endl; |
| 80 | return 1; |
| 81 | } |
| 82 | pkgCacheFile CacheFile; |
| 83 | CacheFile.Open(NULL, false); |
| 84 | APT::PackageSet pkgset = APT::PackageSet::FromCommandLine(CacheFile, CmdL.FileList + 1); |
| 85 | FILE* output = stdout; |
| 86 | if (pkgset.empty() == true) |
| 87 | EDSP::WriteScenario(CacheFile, output); |
| 88 | else |
| 89 | EDSP::WriteLimitedScenario(CacheFile, output, pkgset); |
| 90 | fclose(output); |
| 91 | _error->DumpErrors(std::cerr); |
| 92 | return 0; |
| 93 | } |
| 94 | |
| 95 | // Deal with stdout not being a tty |
| 96 | if (!isatty(STDOUT_FILENO) && _config->FindI("quiet", -1) == -1) |
| 97 | _config->Set("quiet","1"); |
| 98 | |
| 99 | if (_config->FindI("quiet", 0) < 1) |
| 100 | _config->Set("Debug::EDSP::WriteSolution", true); |
| 101 | |
| 102 | _config->Set("APT::System", "Debian APT solver interface"); |
| 103 | _config->Set("APT::Solver", "internal"); |
| 104 | _config->Set("edsp::scenario", "/nonexistent/stdin"); |
| 105 | int input = STDIN_FILENO; |
| 106 | FILE* output = stdout; |
| 107 | SetNonBlock(input, false); |
| 108 | |
| 109 | EDSP::WriteProgress(0, "Start up solver…", output); |
| 110 | |
| 111 | if (pkgInitSystem(*_config,_system) == false) |
| 112 | DIE("System could not be initialized!"); |
| 113 | |
| 114 | EDSP::WriteProgress(1, "Read request…", output); |
| 115 | |
| 116 | if (WaitFd(input, false, 5) == false) |
| 117 | DIE("WAIT timed out in the resolver"); |
| 118 | |
| 119 | std::list<std::string> install, remove; |
| 120 | bool upgrade, distUpgrade, autoRemove; |
| 121 | if (EDSP::ReadRequest(input, install, remove, upgrade, distUpgrade, autoRemove) == false) |
| 122 | DIE("Parsing the request failed!"); |
| 123 | |
| 124 | EDSP::WriteProgress(5, "Read scenario…", output); |
| 125 | |
| 126 | pkgCacheFile CacheFile; |
| 127 | if (CacheFile.Open(NULL, false) == false) |
| 128 | DIE("Failed to open CacheFile!"); |
| 129 | |
| 130 | EDSP::WriteProgress(50, "Apply request on scenario…", output); |
| 131 | |
| 132 | if (EDSP::ApplyRequest(install, remove, CacheFile) == false) |
| 133 | DIE("Failed to apply request to depcache!"); |
| 134 | |
| 135 | pkgProblemResolver Fix(CacheFile); |
| 136 | for (std::list<std::string>::const_iterator i = remove.begin(); |
| 137 | i != remove.end(); ++i) { |
| 138 | pkgCache::PkgIterator P = CacheFile->FindPkg(*i); |
| 139 | Fix.Clear(P); |
| 140 | Fix.Protect(P); |
| 141 | Fix.Remove(P); |
| 142 | } |
| 143 | |
| 144 | for (std::list<std::string>::const_iterator i = install.begin(); |
| 145 | i != install.end(); ++i) { |
| 146 | pkgCache::PkgIterator P = CacheFile->FindPkg(*i); |
| 147 | Fix.Clear(P); |
| 148 | Fix.Protect(P); |
| 149 | } |
| 150 | |
| 151 | for (std::list<std::string>::const_iterator i = install.begin(); |
| 152 | i != install.end(); ++i) |
| 153 | CacheFile->MarkInstall(CacheFile->FindPkg(*i), true); |
| 154 | |
| 155 | EDSP::WriteProgress(60, "Call problemresolver on current scenario…", output); |
| 156 | |
| 157 | std::string failure; |
| 158 | if (upgrade == true) { |
| 159 | if (APT::Upgrade::Upgrade(CacheFile, APT::Upgrade::FORBID_REMOVE_PACKAGES | APT::Upgrade::FORBID_INSTALL_NEW_PACKAGES) == false) |
| 160 | failure = "ERR_UNSOLVABLE_UPGRADE"; |
| 161 | } else if (distUpgrade == true) { |
| 162 | if (APT::Upgrade::Upgrade(CacheFile, APT::Upgrade::ALLOW_EVERYTHING) == false) |
| 163 | failure = "ERR_UNSOLVABLE_DIST_UPGRADE"; |
| 164 | } else if (Fix.Resolve() == false) |
| 165 | failure = "ERR_UNSOLVABLE"; |
| 166 | |
| 167 | if (failure.empty() == false) { |
| 168 | std::ostringstream broken; |
| 169 | ShowBroken(broken, CacheFile, false); |
| 170 | EDSP::WriteError(failure.c_str(), broken.str(), output); |
| 171 | return 0; |
| 172 | } |
| 173 | |
| 174 | EDSP::WriteProgress(95, "Write solution…", output); |
| 175 | |
| 176 | if (EDSP::WriteSolution(CacheFile, output) == false) |
| 177 | DIE("Failed to output the solution!"); |
| 178 | |
| 179 | EDSP::WriteProgress(100, "Done", output); |
| 180 | |
| 181 | return DispatchCommandLine(CmdL, {}); |
| 182 | } |
| 183 | /*}}}*/ |