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Diffstat (limited to '')
| -rw-r--r-- | apt-pkg/init.cc | 289 |
1 files changed, 289 insertions, 0 deletions
diff --git a/apt-pkg/init.cc b/apt-pkg/init.cc new file mode 100644 index 0000000..b9d9b15 --- /dev/null +++ b/apt-pkg/init.cc @@ -0,0 +1,289 @@ +// -*- mode: cpp; mode: fold -*- +// Description /*{{{*/ +/* ###################################################################### + + Init - Initialize the package library + + ##################################################################### */ + /*}}}*/ +// Include files /*{{{*/ +#include <config.h> + +#include <apt-pkg/configuration.h> +#include <apt-pkg/error.h> +#include <apt-pkg/fileutl.h> +#include <apt-pkg/init.h> +#include <apt-pkg/macros.h> +#include <apt-pkg/pkgsystem.h> +#include <apt-pkg/strutl.h> + +#include <cstdlib> +#include <fstream> +#include <sstream> +#include <string> +#include <unordered_map> +#include <vector> +#include <string.h> + +#include <apti18n.h> + /*}}}*/ + +#define Stringfy_(x) # x +#define Stringfy(x) Stringfy_(x) +const char *pkgVersion = PACKAGE_VERSION; +const char *pkgLibVersion = Stringfy(APT_PKG_MAJOR) "." + Stringfy(APT_PKG_MINOR) "." + Stringfy(APT_PKG_RELEASE); +namespace APT { + APT_HIDDEN extern std::unordered_map<std::string, std::vector<std::string>> ArchToTupleMap; +} + +// Splits by whitespace. There may be continuous spans of whitespace - they +// will be considered as one. +static std::vector<std::string> split(std::string const & s) +{ + std::vector<std::string> vec; + std::istringstream iss(s); + iss.imbue(std::locale::classic()); + for(std::string current_s; iss >> current_s; ) + vec.push_back(current_s); + return vec; +} + + +// pkgInitArchTupleMap - Initialize the architecture tuple map /*{{{*/ +// --------------------------------------------------------------------- +/* This initializes */ +static bool pkgInitArchTupleMap() +{ + auto tuplepath = _config->FindFile("Dir::dpkg::tupletable", DPKG_DATADIR "/tupletable"); + auto tripletpath = _config->FindFile("Dir::dpkg::triplettable", DPKG_DATADIR "/triplettable"); + auto cpupath = _config->FindFile("Dir::dpkg::cputable", DPKG_DATADIR "/cputable"); + + // Load a list of CPUs + std::vector<std::string> cpus; + std::ifstream cputable(cpupath); + for (std::string cpuline; std::getline(cputable, cpuline); ) + { + if (cpuline[0] == '#' || cpuline[0] == '\0') + continue; + auto cpurow = split(cpuline); + auto cpu = APT::String::Strip(cpurow.at(0)); + + cpus.push_back(cpu); + } + if (!cputable.eof()) + return _error->Error("Error reading the CPU table"); + + // Load the architecture tuple + std::ifstream tupletable; + if (FileExists(tuplepath)) + tupletable.open(tuplepath); + else if (FileExists(tripletpath)) + tupletable.open(tripletpath); + else + return _error->Error("Cannot find dpkg tuplet or triplet table"); + + APT::ArchToTupleMap.clear(); + for (std::string tupleline; std::getline(tupletable, tupleline); ) + { + if (tupleline[0] == '#' || tupleline[0] == '\0') + continue; + + std::vector<std::string> tuplerow = split(tupleline); + + auto tuple = APT::String::Strip(tuplerow.at(0)); + auto arch = APT::String::Strip(tuplerow.at(1)); + + if (tuple.find("<cpu>") == tuple.npos && arch.find("<cpu>") == arch.npos) + { + APT::ArchToTupleMap.insert({arch, VectorizeString(tuple, '-')}); + } + else + { + for (auto && cpu : cpus) + { + auto mytuple = SubstVar(tuple, std::string("<cpu>"), cpu); + auto myarch = SubstVar(arch, std::string("<cpu>"), cpu); + + APT::ArchToTupleMap.insert({myarch, VectorizeString(mytuple, '-')}); + } + } + } + if (!tupletable.eof()) + return _error->Error("Error reading the Tuple table"); + + return true; +} + /*}}}*/ + + +// pkgInitConfig - Initialize the configuration class /*{{{*/ +// --------------------------------------------------------------------- +/* Directories are specified in such a way that the FindDir function will + understand them. That is, if they don't start with a / then their parent + is prepended, this allows a fair degree of flexibility. */ +bool pkgInitConfig(Configuration &Cnf) +{ + // General APT things + Cnf.CndSet("APT::Architecture", COMMON_ARCH); + if (Cnf.Exists("APT::Build-Essential") == false) + Cnf.Set("APT::Build-Essential::", "build-essential"); + Cnf.CndSet("APT::Install-Recommends", true); + Cnf.CndSet("APT::Install-Suggests", false); + Cnf.CndSet("Dir","/"); + + // State + Cnf.CndSet("Dir::State", &STATE_DIR[1]); + Cnf.CndSet("Dir::State::lists","lists/"); + Cnf.CndSet("Dir::State::cdroms","cdroms.list"); + + // Cache + Cnf.CndSet("Dir::Cache", &CACHE_DIR[1]); + Cnf.CndSet("Dir::Cache::archives","archives/"); + Cnf.CndSet("Dir::Cache::srcpkgcache","srcpkgcache.bin"); + Cnf.CndSet("Dir::Cache::pkgcache","pkgcache.bin"); + + // Configuration + Cnf.CndSet("Dir::Etc", &CONF_DIR[1]); + Cnf.CndSet("Dir::Etc::sourcelist","sources.list"); + Cnf.CndSet("Dir::Etc::sourceparts","sources.list.d"); + Cnf.CndSet("Dir::Etc::main","apt.conf"); + Cnf.CndSet("Dir::Etc::netrc", "auth.conf"); + Cnf.CndSet("Dir::Etc::netrcparts", "auth.conf.d"); + Cnf.CndSet("Dir::Etc::parts","apt.conf.d"); + Cnf.CndSet("Dir::Etc::preferences","preferences"); + Cnf.CndSet("Dir::Etc::preferencesparts","preferences.d"); + Cnf.CndSet("Dir::Etc::trusted", "trusted.gpg"); + Cnf.CndSet("Dir::Etc::trustedparts","trusted.gpg.d"); + Cnf.CndSet("Dir::Bin::methods", LIBEXEC_DIR "/methods"); + Cnf.CndSet("Dir::Bin::solvers::",LIBEXEC_DIR "/solvers"); + Cnf.CndSet("Dir::Bin::planners::",LIBEXEC_DIR "/planners"); + Cnf.CndSet("Dir::Media::MountPath","/media/apt"); + + // State + Cnf.CndSet("Dir::Log", &LOG_DIR[1]); + Cnf.CndSet("Dir::Log::Terminal","term.log"); + Cnf.CndSet("Dir::Log::History","history.log"); + Cnf.CndSet("Dir::Log::Planner","eipp.log.xz"); + + Cnf.Set("Dir::Ignore-Files-Silently::", "~$"); + Cnf.Set("Dir::Ignore-Files-Silently::", "\\.disabled$"); + Cnf.Set("Dir::Ignore-Files-Silently::", "\\.bak$"); + Cnf.Set("Dir::Ignore-Files-Silently::", "\\.dpkg-[a-z]+$"); + Cnf.Set("Dir::Ignore-Files-Silently::", "\\.ucf-[a-z]+$"); + Cnf.Set("Dir::Ignore-Files-Silently::", "\\.save$"); + Cnf.Set("Dir::Ignore-Files-Silently::", "\\.orig$"); + Cnf.Set("Dir::Ignore-Files-Silently::", "\\.distUpgrade$"); + + // Repository security + Cnf.CndSet("Acquire::AllowInsecureRepositories", false); + Cnf.CndSet("Acquire::AllowWeakRepositories", false); + Cnf.CndSet("Acquire::AllowDowngradeToInsecureRepositories", false); + + // Default cdrom mount point + Cnf.CndSet("Acquire::cdrom::mount", "/media/cdrom/"); + + // The default user we drop to in the methods + Cnf.CndSet("APT::Sandbox::User", "_apt"); + + Cnf.CndSet("Acquire::IndexTargets::deb::Packages::MetaKey", "$(COMPONENT)/binary-$(ARCHITECTURE)/Packages"); + Cnf.CndSet("Acquire::IndexTargets::deb::Packages::flatMetaKey", "Packages"); + Cnf.CndSet("Acquire::IndexTargets::deb::Packages::ShortDescription", "Packages"); + Cnf.CndSet("Acquire::IndexTargets::deb::Packages::Description", "$(RELEASE)/$(COMPONENT) $(ARCHITECTURE) Packages"); + Cnf.CndSet("Acquire::IndexTargets::deb::Packages::flatDescription", "$(RELEASE) Packages"); + Cnf.CndSet("Acquire::IndexTargets::deb::Packages::Optional", false); + Cnf.CndSet("Acquire::IndexTargets::deb::Translations::MetaKey", "$(COMPONENT)/i18n/Translation-$(LANGUAGE)"); + Cnf.CndSet("Acquire::IndexTargets::deb::Translations::flatMetaKey", "$(LANGUAGE)"); + Cnf.CndSet("Acquire::IndexTargets::deb::Translations::ShortDescription", "Translation-$(LANGUAGE)"); + Cnf.CndSet("Acquire::IndexTargets::deb::Translations::Description", "$(RELEASE)/$(COMPONENT) Translation-$(LANGUAGE)"); + Cnf.CndSet("Acquire::IndexTargets::deb::Translations::flatDescription", "$(RELEASE) Translation-$(LANGUAGE)"); + Cnf.CndSet("Acquire::IndexTargets::deb-src::Sources::MetaKey", "$(COMPONENT)/source/Sources"); + Cnf.CndSet("Acquire::IndexTargets::deb-src::Sources::flatMetaKey", "Sources"); + Cnf.CndSet("Acquire::IndexTargets::deb-src::Sources::ShortDescription", "Sources"); + Cnf.CndSet("Acquire::IndexTargets::deb-src::Sources::Description", "$(RELEASE)/$(COMPONENT) Sources"); + Cnf.CndSet("Acquire::IndexTargets::deb-src::Sources::flatDescription", "$(RELEASE) Sources"); + Cnf.CndSet("Acquire::IndexTargets::deb-src::Sources::Optional", false); + + Cnf.CndSet("Acquire::Changelogs::URI::Origin::Debian", "https://metadata.ftp-master.debian.org/changelogs/@CHANGEPATH@_changelog"); + Cnf.CndSet("Acquire::Changelogs::URI::Origin::Ubuntu", "https://changelogs.ubuntu.com/changelogs/pool/@CHANGEPATH@/changelog"); + Cnf.CndSet("Acquire::Changelogs::AlwaysOnline::Origin::Ubuntu", true); + + + Cnf.CndSet("DPkg::Path", "/usr/sbin:/usr/bin:/sbin:/bin"); + + // Read an alternate config file + _error->PushToStack(); + const char *Cfg = getenv("APT_CONFIG"); + if (Cfg != 0 && strlen(Cfg) != 0) + { + if (RealFileExists(Cfg) == true) + ReadConfigFile(Cnf, Cfg); + else + _error->WarningE("RealFileExists",_("Unable to read %s"),Cfg); + } + + // Read the configuration parts dir + std::string const Parts = Cnf.FindDir("Dir::Etc::parts", "/dev/null"); + if (DirectoryExists(Parts) == true) + ReadConfigDir(Cnf, Parts); + else if (APT::String::Endswith(Parts, "/dev/null") == false) + _error->WarningE("DirectoryExists",_("Unable to read %s"),Parts.c_str()); + + // Read the main config file + std::string const FName = Cnf.FindFile("Dir::Etc::main", "/dev/null"); + if (RealFileExists(FName) == true) + ReadConfigFile(Cnf, FName); + + if (Cnf.FindB("Debug::pkgInitConfig",false) == true) + Cnf.Dump(); + +#ifdef APT_DOMAIN + if (Cnf.Exists("Dir::Locale")) + { + bindtextdomain(APT_DOMAIN,Cnf.FindDir("Dir::Locale").c_str()); + bindtextdomain(textdomain(0),Cnf.FindDir("Dir::Locale").c_str()); + } +#endif + + auto const good = _error->PendingError() == false; + _error->MergeWithStack(); + return good; +} + /*}}}*/ +// pkgInitSystem - Initialize the _system class /*{{{*/ +// --------------------------------------------------------------------- +/* */ +bool pkgInitSystem(Configuration &Cnf,pkgSystem *&Sys) +{ + Sys = 0; + std::string Label = Cnf.Find("Apt::System",""); + if (Label.empty() == false) + { + Sys = pkgSystem::GetSystem(Label.c_str()); + if (Sys == 0) + return _error->Error(_("Packaging system '%s' is not supported"),Label.c_str()); + } + else + { + signed MaxScore = 0; + for (unsigned I = 0; I != pkgSystem::GlobalListLen; I++) + { + signed Score = pkgSystem::GlobalList[I]->Score(Cnf); + if (Score > MaxScore) + { + MaxScore = Score; + Sys = pkgSystem::GlobalList[I]; + } + } + + if (Sys == 0) + return _error->Error(_("Unable to determine a suitable packaging system type")); + } + + if (pkgInitArchTupleMap() == false) + return false; + + return Sys->Initialize(Cnf); +} + /*}}}*/ |