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apt/apt-pkg/init.cc
David Kalnischkies c3bfdbfa3a Silence clang warning -Wstring-plus-int 
../apt-pkg/init.cc:137:39: warning: adding 'int' to a string does not append to the string [-Wstring-plus-int]
   Cnf.CndSet("Dir::State", STATE_DIR + 1);
../apt-pkg/init.cc:137:39: note: use array indexing to silence this warning

We have a few instances of that & it should be reasonably clear that we are not
actually trying to append here, but ignoring or silencing this warning with an
override is far more costly than just using what clang suggests here.

Reported-By: clang
Gbp-Dch: Ignore
2020-05-25 12:05:00 +02:00

290 lines
11 KiB
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// -*- 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);
}
/*}}}*/
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