apt-pkg/deb/debmetaindex.cc

   1 #include <config.h>
   2
   3 #include <apt-pkg/error.h>
   4 #include <apt-pkg/debmetaindex.h>
   5 #include <apt-pkg/debindexfile.h>
   6 #include <apt-pkg/strutl.h>
   7 #include <apt-pkg/fileutl.h>
   8 #include <apt-pkg/acquire-item.h>
   9 #include <apt-pkg/configuration.h>
  10 #include <apt-pkg/aptconfiguration.h>
  11 #include <apt-pkg/sourcelist.h>
  12 #include <apt-pkg/hashes.h>
  13 #include <apt-pkg/metaindex.h>
  14 #include <apt-pkg/pkgcachegen.h>
  15 #include <apt-pkg/tagfile.h>
  16 #include <apt-pkg/gpgv.h>
  17 #include <apt-pkg/macros.h>
  18
  19 #include <map>
  20 #include <string>
  21 #include <utility>
  22 #include <vector>
  23 #include <algorithm>
  24 #include <sstream>
  25
  26 #include <sys/stat.h>
  27 #include <string.h>
  28
  29 #include <apti18n.h>
  30
  31 class APT_HIDDEN debReleaseIndexPrivate                                 /*{{{*/
  32 {
  33    public:
  34    struct APT_HIDDEN debSectionEntry
  35    {
  36       std::string const sourcesEntry;
  37       std::string const Name;
  38       std::vector<std::string> const Targets;
  39       std::vector<std::string> const Architectures;
  40       std::vector<std::string> const Languages;
  41       bool const UsePDiffs;
  42       std::string const UseByHash;
  43    };
  44
  45    std::vector<debSectionEntry> DebEntries;
  46    std::vector<debSectionEntry> DebSrcEntries;
  47
  48    metaIndex::TriState CheckValidUntil;
  49    time_t ValidUntilMin;
  50    time_t ValidUntilMax;
  51
  52    std::vector<std::string> Architectures;
  53    std::vector<std::string> NoSupportForAll;
  54    std::map<std::string, std::string> const ReleaseOptions;
  55
  56    debReleaseIndexPrivate(std::map<std::string, std::string> const &Options) : CheckValidUntil(metaIndex::TRI_UNSET), ValidUntilMin(0), ValidUntilMax(0), ReleaseOptions(Options) {}
  57 };
  58                                                                         /*}}}*/
  59 // ReleaseIndex::MetaIndex* - display helpers                           /*{{{*/
  60 std::string debReleaseIndex::MetaIndexInfo(const char *Type) const
  61 {
  62    std::string Info = ::URI::ArchiveOnly(URI) + ' ';
  63    if (Dist[Dist.size() - 1] == '/')
  64    {
  65       if (Dist != "/")
  66          Info += Dist;
  67    }
  68    else
  69       Info += Dist;
  70    Info += " ";
  71    Info += Type;
  72    return Info;
  73 }
  74 std::string debReleaseIndex::Describe() const
  75 {
  76    return MetaIndexInfo("Release");
  77 }
  78
  79 std::string debReleaseIndex::MetaIndexFile(const char *Type) const
  80 {
  81    return _config->FindDir("Dir::State::lists") +
  82       URItoFileName(MetaIndexURI(Type));
  83 }
  84 static std::string constructMetaIndexURI(std::string URI, std::string const &Dist, char const * const Type)
  85 {
  86    if (Dist == "/")
  87       ;
  88    else if (Dist[Dist.size()-1] == '/')
  89       URI += Dist;
  90    else
  91       URI += "dists/" + Dist + "/";
  92    return URI + Type;
  93 }
  94 std::string debReleaseIndex::MetaIndexURI(const char *Type) const
  95 {
  96    return constructMetaIndexURI(URI, Dist, Type);
  97 }
  98                                                                         /*}}}*/
  99 // ReleaseIndex Con- and Destructors                                    /*{{{*/
 100 debReleaseIndex::debReleaseIndex(std::string const &URI, std::string const &Dist, std::map<std::string, std::string> const &Options) :
 101                                         metaIndex(URI, Dist, "deb"), d(new debReleaseIndexPrivate(Options))
 102 {}
 103 debReleaseIndex::debReleaseIndex(std::string const &URI, std::string const &Dist, bool const pTrusted, std::map<std::string, std::string> const &Options) :
 104                                         metaIndex(URI, Dist, "deb"), d(new debReleaseIndexPrivate(Options))
 105 {
 106    Trusted = pTrusted ? TRI_YES : TRI_NO;
 107 }
 108 debReleaseIndex::~debReleaseIndex() {
 109    if (d != NULL)
 110       delete d;
 111 }
 112                                                                         /*}}}*/
 113 // ReleaseIndex::GetIndexTargets                                        /*{{{*/
 114 static void GetIndexTargetsFor(char const * const Type, std::string const &URI, std::string const &Dist,
 115       std::vector<debReleaseIndexPrivate::debSectionEntry> const &entries,
 116       std::vector<IndexTarget> &IndexTargets, std::map<std::string, std::string> const &ReleaseOptions)
 117 {
 118    bool const flatArchive = (Dist[Dist.length() - 1] == '/');
 119    std::string const baseURI = constructMetaIndexURI(URI, Dist, "");
 120    std::string const Release = (Dist == "/") ? "" : Dist;
 121    std::string const Site = ::URI::ArchiveOnly(URI);
 122
 123    std::string DefCompressionTypes;
 124    {
 125       std::vector<std::string> types = APT::Configuration::getCompressionTypes();
 126       if (types.empty() == false)
 127       {
 128          std::ostringstream os;
 129          std::copy(types.begin(), types.end()-1, std::ostream_iterator<std::string>(os, " "));
 130          os << *types.rbegin();
 131          DefCompressionTypes = os.str();
 132       }
 133    }
 134    std::string DefKeepCompressedAs;
 135    {
 136       std::vector<APT::Configuration::Compressor> comps = APT::Configuration::getCompressors();
 137       if (comps.empty() == false)
 138       {
 139          std::sort(comps.begin(), comps.end(),
 140                [](APT::Configuration::Compressor const &a, APT::Configuration::Compressor const &b) { return a.Cost < b.Cost; });
 141          std::ostringstream os;
 142          for (auto const &c : comps)
 143             if (c.Cost != 0)
 144                os << c.Extension.substr(1) << ' ';
 145          DefKeepCompressedAs = os.str();
 146       }
 147       DefKeepCompressedAs += "uncompressed";
 148    }
 149
 150    std::vector<std::string> const NativeArchs = { _config->Find("APT::Architecture"), "all" };
 151    bool const GzipIndex = _config->FindB("Acquire::GzipIndexes", false);
 152    for (std::vector<debReleaseIndexPrivate::debSectionEntry>::const_iterator E = entries.begin(); E != entries.end(); ++E)
 153    {
 154       for (std::vector<std::string>::const_iterator T = E->Targets.begin(); T != E->Targets.end(); ++T)
 155       {
 156 #define APT_T_CONFIG_STR(X, Y) _config->Find(std::string("Acquire::IndexTargets::") + Type  + "::" + *T + "::" + (X), (Y))
 157 #define APT_T_CONFIG_BOOL(X, Y) _config->FindB(std::string("Acquire::IndexTargets::") + Type  + "::" + *T + "::" + (X), (Y))
 158          std::string const tplMetaKey = APT_T_CONFIG_STR(flatArchive ? "flatMetaKey" : "MetaKey", "");
 159          std::string const tplShortDesc = APT_T_CONFIG_STR("ShortDescription", "");
 160          std::string const tplLongDesc = "$(SITE) " + APT_T_CONFIG_STR(flatArchive ? "flatDescription" : "Description", "");
 161          std::string const tplIdentifier = APT_T_CONFIG_STR("Identifier", *T);
 162          bool const IsOptional = APT_T_CONFIG_BOOL("Optional", true);
 163          bool const KeepCompressed = APT_T_CONFIG_BOOL("KeepCompressed", GzipIndex);
 164          bool const DefaultEnabled = APT_T_CONFIG_BOOL("DefaultEnabled", true);
 165          bool const UsePDiffs = APT_T_CONFIG_BOOL("PDiffs", E->UsePDiffs);
 166          std::string const UseByHash = APT_T_CONFIG_STR("By-Hash", E->UseByHash);
 167          std::string const CompressionTypes = APT_T_CONFIG_STR("CompressionTypes", DefCompressionTypes);
 168          std::string KeepCompressedAs = APT_T_CONFIG_STR("KeepCompressedAs", "");
 169          std::string const FallbackOf = APT_T_CONFIG_STR("Fallback-Of", "");
 170 #undef APT_T_CONFIG_BOOL
 171 #undef APT_T_CONFIG_STR
 172          if (tplMetaKey.empty())
 173             continue;
 174
 175          if (KeepCompressedAs.empty())
 176             KeepCompressedAs = DefKeepCompressedAs;
 177          else
 178          {
 179             std::vector<std::string> const defKeep = VectorizeString(DefKeepCompressedAs, ' ');
 180             std::vector<std::string> const valKeep = VectorizeString(KeepCompressedAs, ' ');
 181             std::vector<std::string> keep;
 182             for (auto const &val : valKeep)
 183             {
 184                if (val.empty())
 185                   continue;
 186                if (std::find(defKeep.begin(), defKeep.end(), val) == defKeep.end())
 187                   continue;
 188                keep.push_back(val);
 189             }
 190             if (std::find(keep.begin(), keep.end(), "uncompressed") == keep.end())
 191                keep.push_back("uncompressed");
 192             std::ostringstream os;
 193             std::copy(keep.begin(), keep.end()-1, std::ostream_iterator<std::string>(os, " "));
 194             os << *keep.rbegin();
 195             KeepCompressedAs = os.str();
 196          }
 197
 198          for (std::vector<std::string>::const_iterator L = E->Languages.begin(); L != E->Languages.end(); ++L)
 199          {
 200             if (*L == "none" && tplMetaKey.find("$(LANGUAGE)") != std::string::npos)
 201                continue;
 202
 203             for (std::vector<std::string>::const_iterator A = E->Architectures.begin(); A != E->Architectures.end(); ++A)
 204             {
 205                for (auto const &NativeArch: NativeArchs)
 206                {
 207                   constexpr static auto BreakPoint = "$(NATIVE_ARCHITECTURE)";
 208                   // available in templates
 209                   std::map<std::string, std::string> Options;
 210                   Options.insert(std::make_pair("SITE", Site));
 211                   Options.insert(std::make_pair("RELEASE", Release));
 212                   if (tplMetaKey.find("$(COMPONENT)") != std::string::npos)
 213                      Options.insert(std::make_pair("COMPONENT", E->Name));
 214                   if (tplMetaKey.find("$(LANGUAGE)") != std::string::npos)
 215                      Options.insert(std::make_pair("LANGUAGE", *L));
 216                   if (tplMetaKey.find("$(ARCHITECTURE)") != std::string::npos)
 217                      Options.insert(std::make_pair("ARCHITECTURE", *A));
 218                   else if (tplMetaKey.find("$(NATIVE_ARCHITECTURE)") != std::string::npos)
 219                      Options.insert(std::make_pair("ARCHITECTURE", NativeArch));
 220                   if (tplMetaKey.find("$(NATIVE_ARCHITECTURE)") != std::string::npos)
 221                      Options.insert(std::make_pair("NATIVE_ARCHITECTURE", NativeArch));
 222
 223                   std::string MetaKey = tplMetaKey;
 224                   std::string ShortDesc = tplShortDesc;
 225                   std::string LongDesc = tplLongDesc;
 226                   std::string Identifier = tplIdentifier;
 227                   for (std::map<std::string, std::string>::const_iterator O = Options.begin(); O != Options.end(); ++O)
 228                   {
 229                      std::string const varname = "$(" + O->first + ")";
 230                      MetaKey = SubstVar(MetaKey, varname, O->second);
 231                      ShortDesc = SubstVar(ShortDesc, varname, O->second);
 232                      LongDesc = SubstVar(LongDesc, varname, O->second);
 233                      Identifier = SubstVar(Identifier, varname, O->second);
 234                   }
 235
 236                   {
 237                      auto const dup = std::find_if(IndexTargets.begin(), IndexTargets.end(), [&](IndexTarget const &IT) {
 238                         return MetaKey == IT.MetaKey && baseURI == IT.Option(IndexTarget::BASE_URI) &&
 239                            E->sourcesEntry == IT.Option(IndexTarget::SOURCESENTRY) && *T == IT.Option(IndexTarget::CREATED_BY);
 240                      });
 241                      if (dup != IndexTargets.end())
 242                      {
 243                         if (tplMetaKey.find(BreakPoint) == std::string::npos)
 244                            break;
 245                         continue;
 246                      }
 247                   }
 248
 249                   {
 250                      auto const dup = std::find_if(IndexTargets.begin(), IndexTargets.end(), [&](IndexTarget const &IT) {
 251                         return MetaKey == IT.MetaKey && baseURI == IT.Option(IndexTarget::BASE_URI) &&
 252                            E->sourcesEntry == IT.Option(IndexTarget::SOURCESENTRY) && *T != IT.Option(IndexTarget::CREATED_BY);
 253                         });
 254                      if (dup != IndexTargets.end())
 255                      {
 256                         std::string const dupT = dup->Option(IndexTarget::CREATED_BY);
 257                         std::string const dupEntry = dup->Option(IndexTarget::SOURCESENTRY);
 258                         //TRANSLATOR: an identifier like Packages; Releasefile key indicating
 259                         // a file like main/binary-amd64/Packages; another identifier like Contents;
 260                         // filename and linenumber of the sources.list entry currently parsed
 261                         _error->Warning(_("Target %s wants to acquire the same file (%s) as %s from source %s"),
 262                               T->c_str(), MetaKey.c_str(), dupT.c_str(), dupEntry.c_str());
 263                         if (tplMetaKey.find(BreakPoint) == std::string::npos)
 264                            break;
 265                         continue;
 266                      }
 267                   }
 268
 269                   {
 270                      auto const dup = std::find_if(IndexTargets.begin(), IndexTargets.end(), [&](IndexTarget const &T) {
 271                         return MetaKey == T.MetaKey && baseURI == T.Option(IndexTarget::BASE_URI) &&
 272                            E->sourcesEntry != T.Option(IndexTarget::SOURCESENTRY);
 273                      });
 274                      if (dup != IndexTargets.end())
 275                      {
 276                         std::string const dupEntry = dup->Option(IndexTarget::SOURCESENTRY);
 277                         //TRANSLATOR: an identifier like Packages; Releasefile key indicating
 278                         // a file like main/binary-amd64/Packages; filename and linenumber of
 279                         // two sources.list entries
 280                         _error->Warning(_("Target %s (%s) is configured multiple times in %s and %s"),
 281                               T->c_str(), MetaKey.c_str(), dupEntry.c_str(), E->sourcesEntry.c_str());
 282                         if (tplMetaKey.find(BreakPoint) == std::string::npos)
 283                            break;
 284                         continue;
 285                      }
 286                   }
 287
 288                   // not available in templates, but in the indextarget
 289                   Options.insert(ReleaseOptions.begin(), ReleaseOptions.end());
 290                   Options.insert(std::make_pair("IDENTIFIER", Identifier));
 291                   Options.insert(std::make_pair("TARGET_OF", Type));
 292                   Options.insert(std::make_pair("CREATED_BY", *T));
 293                   Options.insert(std::make_pair("FALLBACK_OF", FallbackOf));
 294                   Options.insert(std::make_pair("PDIFFS", UsePDiffs ? "yes" : "no"));
 295                   Options.insert(std::make_pair("BY_HASH", UseByHash));
 296                   Options.insert(std::make_pair("DEFAULTENABLED", DefaultEnabled ? "yes" : "no"));
 297                   Options.insert(std::make_pair("COMPRESSIONTYPES", CompressionTypes));
 298                   Options.insert(std::make_pair("KEEPCOMPRESSEDAS", KeepCompressedAs));
 299                   Options.insert(std::make_pair("SOURCESENTRY", E->sourcesEntry));
 300
 301                   bool IsOpt = IsOptional;
 302                   if (IsOpt == false)
 303                   {
 304                      auto const arch = Options.find("ARCHITECTURE");
 305                      if (arch != Options.end() && arch->second == "all")
 306                         IsOpt = true;
 307                   }
 308
 309                   IndexTarget Target(
 310                         MetaKey,
 311                         ShortDesc,
 312                         LongDesc,
 313                         baseURI + MetaKey,
 314                         IsOpt,
 315                         KeepCompressed,
 316                         Options
 317                         );
 318                   IndexTargets.push_back(Target);
 319
 320                   if (tplMetaKey.find(BreakPoint) == std::string::npos)
 321                      break;
 322                }
 323
 324                if (tplMetaKey.find("$(ARCHITECTURE)") == std::string::npos)
 325                   break;
 326
 327             }
 328
 329             if (tplMetaKey.find("$(LANGUAGE)") == std::string::npos)
 330                break;
 331
 332          }
 333
 334       }
 335    }
 336 }
 337 std::vector<IndexTarget> debReleaseIndex::GetIndexTargets() const
 338 {
 339    std::vector<IndexTarget> IndexTargets;
 340    GetIndexTargetsFor("deb-src", URI, Dist, d->DebSrcEntries, IndexTargets, d->ReleaseOptions);
 341    GetIndexTargetsFor("deb", URI, Dist, d->DebEntries, IndexTargets, d->ReleaseOptions);
 342    return IndexTargets;
 343 }
 344                                                                         /*}}}*/
 345 void debReleaseIndex::AddComponent(std::string const &sourcesEntry,     /*{{{*/
 346          bool const isSrc, std::string const &Name,
 347          std::vector<std::string> const &Targets,
 348          std::vector<std::string> const &Architectures,
 349          std::vector<std::string> Languages,
 350          bool const usePDiffs, std::string const &useByHash)
 351 {
 352    if (Languages.empty() == true)
 353       Languages.push_back("none");
 354    debReleaseIndexPrivate::debSectionEntry const entry = {
 355       sourcesEntry, Name, Targets, Architectures, Languages, usePDiffs, useByHash
 356    };
 357    if (isSrc)
 358       d->DebSrcEntries.push_back(entry);
 359    else
 360       d->DebEntries.push_back(entry);
 361 }
 362                                                                         /*}}}*/
 363
 364 bool debReleaseIndex::Load(std::string const &Filename, std::string * const ErrorText)/*{{{*/
 365 {
 366    LoadedSuccessfully = TRI_NO;
 367    FileFd Fd;
 368    if (OpenMaybeClearSignedFile(Filename, Fd) == false)
 369       return false;
 370
 371    pkgTagFile TagFile(&Fd, Fd.Size());
 372    if (Fd.IsOpen() == false || Fd.Failed())
 373    {
 374       if (ErrorText != NULL)
 375          strprintf(*ErrorText, _("Unable to parse Release file %s"),Filename.c_str());
 376       return false;
 377    }
 378
 379    pkgTagSection Section;
 380    const char *Start, *End;
 381    if (TagFile.Step(Section) == false)
 382    {
 383       if (ErrorText != NULL)
 384          strprintf(*ErrorText, _("No sections in Release file %s"), Filename.c_str());
 385       return false;
 386    }
 387    // FIXME: find better tag name
 388    SupportsAcquireByHash = Section.FindB("Acquire-By-Hash", false);
 389
 390    Suite = Section.FindS("Suite");
 391    Codename = Section.FindS("Codename");
 392    {
 393       std::string const archs = Section.FindS("Architectures");
 394       if (archs.empty() == false)
 395          d->Architectures = VectorizeString(archs, ' ');
 396    }
 397    {
 398       std::string const targets = Section.FindS("No-Support-for-Architecture-all");
 399       if (targets.empty() == false)
 400          d->NoSupportForAll = VectorizeString(targets, ' ');
 401    }
 402
 403    bool FoundHashSum = false;
 404    bool FoundStrongHashSum = false;
 405    auto const SupportedHashes = HashString::SupportedHashes();
 406    for (int i=0; SupportedHashes[i] != NULL; i++)
 407    {
 408       if (!Section.Find(SupportedHashes[i], Start, End))
 409          continue;
 410
 411       std::string Name;
 412       std::string Hash;
 413       unsigned long long Size;
 414       while (Start < End)
 415       {
 416          if (!parseSumData(Start, End, Name, Hash, Size))
 417             return false;
 418
 419          HashString const hs(SupportedHashes[i], Hash);
 420          if (Entries.find(Name) == Entries.end())
 421          {
 422             metaIndex::checkSum *Sum = new metaIndex::checkSum;
 423             Sum->MetaKeyFilename = Name;
 424             Sum->Size = Size;
 425             Sum->Hashes.FileSize(Size);
 426             APT_IGNORE_DEPRECATED(Sum->Hash = hs;)
 427             Entries[Name] = Sum;
 428          }
 429          Entries[Name]->Hashes.push_back(hs);
 430          FoundHashSum = true;
 431          if (FoundStrongHashSum == false && hs.usable() == true)
 432             FoundStrongHashSum = true;
 433       }
 434    }
 435
 436    bool AuthPossible = false;
 437    if(FoundHashSum == false)
 438       _error->Warning(_("No Hash entry in Release file %s"), Filename.c_str());
 439    else if(FoundStrongHashSum == false)
 440       _error->Warning(_("No Hash entry in Release file %s which is considered strong enough for security purposes"), Filename.c_str());
 441    else
 442       AuthPossible = true;
 443
 444    std::string const StrDate = Section.FindS("Date");
 445    if (RFC1123StrToTime(StrDate.c_str(), Date) == false)
 446    {
 447       _error->Warning( _("Invalid '%s' entry in Release file %s"), "Date", Filename.c_str());
 448       Date = 0;
 449    }
 450
 451    bool CheckValidUntil = _config->FindB("Acquire::Check-Valid-Until", true);
 452    if (d->CheckValidUntil == metaIndex::TRI_NO)
 453       CheckValidUntil = false;
 454    else if (d->CheckValidUntil == metaIndex::TRI_YES)
 455       CheckValidUntil = true;
 456
 457    if (CheckValidUntil == true)
 458    {
 459       std::string const Label = Section.FindS("Label");
 460       std::string const StrValidUntil = Section.FindS("Valid-Until");
 461
 462       // if we have a Valid-Until header in the Release file, use it as default
 463       if (StrValidUntil.empty() == false)
 464       {
 465          if(RFC1123StrToTime(StrValidUntil.c_str(), ValidUntil) == false)
 466          {
 467             if (ErrorText != NULL)
 468                strprintf(*ErrorText, _("Invalid '%s' entry in Release file %s"), "Valid-Until", Filename.c_str());
 469             return false;
 470          }
 471       }
 472       // get the user settings for this archive and use what expires earlier
 473       time_t MaxAge = d->ValidUntilMax;
 474       if (MaxAge == 0)
 475       {
 476          MaxAge = _config->FindI("Acquire::Max-ValidTime", 0);
 477          if (Label.empty() == false)
 478             MaxAge = _config->FindI(("Acquire::Max-ValidTime::" + Label).c_str(), MaxAge);
 479       }
 480       time_t MinAge = d->ValidUntilMin;
 481       if (MinAge == 0)
 482       {
 483          MinAge = _config->FindI("Acquire::Min-ValidTime", 0);
 484          if (Label.empty() == false)
 485             MinAge = _config->FindI(("Acquire::Min-ValidTime::" + Label).c_str(), MinAge);
 486       }
 487
 488       if (MinAge != 0 || ValidUntil != 0 || MaxAge != 0)
 489       {
 490          if (MinAge != 0 && ValidUntil != 0) {
 491             time_t const min_date = Date + MinAge;
 492             if (ValidUntil < min_date)
 493                ValidUntil = min_date;
 494          }
 495          if (MaxAge != 0 && Date != 0) {
 496             time_t const max_date = Date + MaxAge;
 497             if (ValidUntil == 0 || ValidUntil > max_date)
 498                ValidUntil = max_date;
 499          }
 500       }
 501    }
 502
 503    /* as the Release file is parsed only after it was verified, the Signed-By field
 504       does not effect the current, but the "next" Release file */
 505    auto Sign = Section.FindS("Signed-By");
 506    if (Sign.empty() == false)
 507    {
 508       std::transform(Sign.begin(), Sign.end(), Sign.begin(), [&](char const c) {
 509          return (isspace(c) == 0) ? c : ',';
 510       });
 511       auto fingers = VectorizeString(Sign, ',');
 512       std::transform(fingers.begin(), fingers.end(), fingers.begin(), [&](std::string finger) {
 513          std::transform(finger.begin(), finger.end(), finger.begin(), ::toupper);
 514          if (finger.length() != 40 || finger.find_first_not_of("0123456789ABCDEF") != std::string::npos)
 515          {
 516             if (ErrorText != NULL)
 517                strprintf(*ErrorText, _("Invalid '%s' entry in Release file %s"), "Signed-By", Filename.c_str());
 518             return std::string();
 519          }
 520          return finger;
 521       });
 522       if (fingers.empty() == false && std::find(fingers.begin(), fingers.end(), "") == fingers.end())
 523       {
 524          std::stringstream os;
 525          std::copy(fingers.begin(), fingers.end(), std::ostream_iterator<std::string>(os, ","));
 526          SignedBy = os.str();
 527       }
 528    }
 529
 530    if (AuthPossible)
 531       LoadedSuccessfully = TRI_YES;
 532    return AuthPossible;
 533 }
 534                                                                         /*}}}*/
 535 metaIndex * debReleaseIndex::UnloadedClone() const                      /*{{{*/
 536 {
 537    if (Trusted == TRI_NO)
 538       return new debReleaseIndex(URI, Dist, false, d->ReleaseOptions);
 539    else if (Trusted == TRI_YES)
 540       return new debReleaseIndex(URI, Dist, true, d->ReleaseOptions);
 541    else
 542       return new debReleaseIndex(URI, Dist, d->ReleaseOptions);
 543 }
 544                                                                         /*}}}*/
 545 bool debReleaseIndex::parseSumData(const char *&Start, const char *End, /*{{{*/
 546                                    std::string &Name, std::string &Hash, unsigned long long &Size)
 547 {
 548    Name = "";
 549    Hash = "";
 550    Size = 0;
 551    /* Skip over the first blank */
 552    while ((*Start == '\t' || *Start == ' ' || *Start == '\n' || *Start == '\r')
 553           && Start < End)
 554       Start++;
 555    if (Start >= End)
 556       return false;
 557
 558    /* Move EntryEnd to the end of the first entry (the hash) */
 559    const char *EntryEnd = Start;
 560    while ((*EntryEnd != '\t' && *EntryEnd != ' ')
 561           && EntryEnd < End)
 562       EntryEnd++;
 563    if (EntryEnd == End)
 564       return false;
 565
 566    Hash.append(Start, EntryEnd-Start);
 567
 568    /* Skip over intermediate blanks */
 569    Start = EntryEnd;
 570    while (*Start == '\t' || *Start == ' ')
 571       Start++;
 572    if (Start >= End)
 573       return false;
 574
 575    EntryEnd = Start;
 576    /* Find the end of the second entry (the size) */
 577    while ((*EntryEnd != '\t' && *EntryEnd != ' ' )
 578           && EntryEnd < End)
 579       EntryEnd++;
 580    if (EntryEnd == End)
 581       return false;
 582
 583    Size = strtoull (Start, NULL, 10);
 584
 585    /* Skip over intermediate blanks */
 586    Start = EntryEnd;
 587    while (*Start == '\t' || *Start == ' ')
 588       Start++;
 589    if (Start >= End)
 590       return false;
 591
 592    EntryEnd = Start;
 593    /* Find the end of the third entry (the filename) */
 594    while ((*EntryEnd != '\t' && *EntryEnd != ' ' &&
 595            *EntryEnd != '\n' && *EntryEnd != '\r')
 596           && EntryEnd < End)
 597       EntryEnd++;
 598
 599    Name.append(Start, EntryEnd-Start);
 600    Start = EntryEnd; //prepare for the next round
 601    return true;
 602 }
 603                                                                         /*}}}*/
 604
 605 bool debReleaseIndex::GetIndexes(pkgAcquire *Owner, bool const &GetAll)/*{{{*/
 606 {
 607 #define APT_TARGET(X) IndexTarget("", X, MetaIndexInfo(X), MetaIndexURI(X), false, false, d->ReleaseOptions)
 608    pkgAcqMetaClearSig * const TransactionManager = new pkgAcqMetaClearSig(Owner,
 609          APT_TARGET("InRelease"), APT_TARGET("Release"), APT_TARGET("Release.gpg"), this);
 610 #undef APT_TARGET
 611    // special case for --print-uris
 612    if (GetAll)
 613       for (auto const &Target: GetIndexTargets())
 614          if (Target.Option(IndexTarget::FALLBACK_OF).empty())
 615             new pkgAcqIndex(Owner, TransactionManager, Target);
 616
 617    return true;
 618 }
 619                                                                         /*}}}*/
 620 // ReleaseIndex::Set* TriState options                                  /*{{{*/
 621 bool debReleaseIndex::SetTrusted(TriState const pTrusted)
 622 {
 623    if (Trusted == TRI_UNSET)
 624       Trusted = pTrusted;
 625    else if (Trusted != pTrusted)
 626       // TRANSLATOR: The first is an option name from sources.list manpage, the other two URI and Suite
 627       return _error->Error(_("Conflicting values set for option %s regarding source %s %s"), "Trusted", URI.c_str(), Dist.c_str());
 628    return true;
 629 }
 630 bool debReleaseIndex::SetCheckValidUntil(TriState const pCheckValidUntil)
 631 {
 632    if (d->CheckValidUntil == TRI_UNSET)
 633       d->CheckValidUntil = pCheckValidUntil;
 634    else if (d->CheckValidUntil != pCheckValidUntil)
 635       return _error->Error(_("Conflicting values set for option %s regarding source %s %s"), "Check-Valid-Until", URI.c_str(), Dist.c_str());
 636    return true;
 637 }
 638 bool debReleaseIndex::SetValidUntilMin(time_t const Valid)
 639 {
 640    if (d->ValidUntilMin == 0)
 641       d->ValidUntilMin = Valid;
 642    else if (d->ValidUntilMin != Valid)
 643       return _error->Error(_("Conflicting values set for option %s regarding source %s %s"), "Min-ValidTime", URI.c_str(), Dist.c_str());
 644    return true;
 645 }
 646 bool debReleaseIndex::SetValidUntilMax(time_t const Valid)
 647 {
 648    if (d->ValidUntilMax == 0)
 649       d->ValidUntilMax = Valid;
 650    else if (d->ValidUntilMax != Valid)
 651       return _error->Error(_("Conflicting values set for option %s regarding source %s %s"), "Max-ValidTime", URI.c_str(), Dist.c_str());
 652    return true;
 653 }
 654 bool debReleaseIndex::SetSignedBy(std::string const &pSignedBy)
 655 {
 656    if (SignedBy.empty() == true && pSignedBy.empty() == false)
 657    {
 658       if (pSignedBy[0] == '/') // no check for existence as we could be chrooting later or such things
 659          SignedBy = pSignedBy; // absolute path to a keyring file
 660       else
 661       {
 662          // we could go all fancy and allow short/long/string matches as gpgv/apt-key does,
 663          // but fingerprints are harder to fake than the others and this option is set once,
 664          // not interactively all the time so easy to type is not really a concern.
 665          auto fingers = VectorizeString(pSignedBy, ',');
 666          std::transform(fingers.begin(), fingers.end(), fingers.begin(), [&](std::string finger) {
 667             std::transform(finger.begin(), finger.end(), finger.begin(), ::toupper);
 668             if (finger.length() != 40 || finger.find_first_not_of("0123456789ABCDEF") != std::string::npos)
 669             {
 670                _error->Error(_("Invalid value set for option %s regarding source %s %s (%s)"), "Signed-By", URI.c_str(), Dist.c_str(), "not a fingerprint");
 671                return std::string();
 672             }
 673             return finger;
 674          });
 675          std::stringstream os;
 676          std::copy(fingers.begin(), fingers.end(), std::ostream_iterator<std::string>(os, ","));
 677          SignedBy = os.str();
 678       }
 679       // Normalize the string: Remove trailing commas
 680       while (SignedBy[SignedBy.size() - 1] == ',')
 681          SignedBy.resize(SignedBy.size() - 1);
 682    }
 683    else {
 684       // Only compare normalized strings
 685       auto pSignedByView = APT::StringView(pSignedBy);
 686       while (pSignedByView[pSignedByView.size() - 1] == ',')
 687          pSignedByView = pSignedByView.substr(0, pSignedByView.size() - 1);
 688       if (pSignedByView != SignedBy)
 689          return _error->Error(_("Conflicting values set for option %s regarding source %s %s: %s != %s"), "Signed-By", URI.c_str(), Dist.c_str(), SignedBy.c_str(), pSignedByView.to_string().c_str());
 690    }
 691    return true;
 692 }
 693                                                                         /*}}}*/
 694 // ReleaseIndex::IsTrusted                                              /*{{{*/
 695 bool debReleaseIndex::IsTrusted() const
 696 {
 697    if (Trusted == TRI_YES)
 698       return true;
 699    else if (Trusted == TRI_NO)
 700       return false;
 701
 702
 703    if(_config->FindB("APT::Authentication::TrustCDROM", false))
 704       if(URI.substr(0,strlen("cdrom:")) == "cdrom:")
 705          return true;
 706
 707    if (FileExists(MetaIndexFile("Release.gpg")))
 708       return true;
 709
 710    return FileExists(MetaIndexFile("InRelease"));
 711 }
 712                                                                         /*}}}*/
 713 bool debReleaseIndex::IsArchitectureSupported(std::string const &arch) const/*{{{*/
 714 {
 715    if (d->Architectures.empty())
 716       return true;
 717    return std::find(d->Architectures.begin(), d->Architectures.end(), arch) != d->Architectures.end();
 718 }
 719                                                                         /*}}}*/
 720 bool debReleaseIndex::IsArchitectureAllSupportedFor(IndexTarget const &target) const/*{{{*/
 721 {
 722    if (d->NoSupportForAll.empty())
 723       return true;
 724    return std::find(d->NoSupportForAll.begin(), d->NoSupportForAll.end(), target.Option(IndexTarget::CREATED_BY)) == d->NoSupportForAll.end();
 725 }
 726                                                                         /*}}}*/
 727 std::vector <pkgIndexFile *> *debReleaseIndex::GetIndexFiles()          /*{{{*/
 728 {
 729    if (Indexes != NULL)
 730       return Indexes;
 731
 732    Indexes = new std::vector<pkgIndexFile*>();
 733    bool const istrusted = IsTrusted();
 734    for (auto const &T: GetIndexTargets())
 735    {
 736       std::string const TargetName = T.Option(IndexTarget::CREATED_BY);
 737       if (TargetName == "Packages")
 738          Indexes->push_back(new debPackagesIndex(T, istrusted));
 739       else if (TargetName == "Sources")
 740          Indexes->push_back(new debSourcesIndex(T, istrusted));
 741       else if (TargetName == "Translations")
 742          Indexes->push_back(new debTranslationsIndex(T));
 743    }
 744    return Indexes;
 745 }
 746                                                                         /*}}}*/
 747 std::map<std::string, std::string> debReleaseIndex::GetReleaseOptions()
 748 {
 749    return d->ReleaseOptions;
 750 }
 751
 752 static bool ReleaseFileName(debReleaseIndex const * const That, std::string &ReleaseFile)/*{{{*/
 753 {
 754    ReleaseFile = That->MetaIndexFile("InRelease");
 755    bool releaseExists = false;
 756    if (FileExists(ReleaseFile) == true)
 757       releaseExists = true;
 758    else
 759    {
 760       ReleaseFile = That->MetaIndexFile("Release");
 761       if (FileExists(ReleaseFile))
 762          releaseExists = true;
 763    }
 764    return releaseExists;
 765 }
 766                                                                         /*}}}*/
 767 bool debReleaseIndex::Merge(pkgCacheGenerator &Gen,OpProgress * /*Prog*/) const/*{{{*/
 768 {
 769    std::string ReleaseFile;
 770    bool const releaseExists = ReleaseFileName(this, ReleaseFile);
 771
 772    ::URI Tmp(URI);
 773    if (Gen.SelectReleaseFile(ReleaseFile, Tmp.Host) == false)
 774       return _error->Error("Problem with SelectReleaseFile %s", ReleaseFile.c_str());
 775
 776    if (releaseExists == false)
 777       return true;
 778
 779    FileFd Rel;
 780    // Beware: The 'Release' file might be clearsigned in case the
 781    // signature for an 'InRelease' file couldn't be checked
 782    if (OpenMaybeClearSignedFile(ReleaseFile, Rel) == false)
 783       return false;
 784
 785    // Store the IMS information
 786    pkgCache::RlsFileIterator File = Gen.GetCurRlsFile();
 787    pkgCacheGenerator::Dynamic<pkgCache::RlsFileIterator> DynFile(File);
 788    // Rel can't be used as this is potentially a temporary file
 789    struct stat Buf;
 790    if (stat(ReleaseFile.c_str(), &Buf) != 0)
 791       return _error->Errno("fstat", "Unable to stat file %s", ReleaseFile.c_str());
 792    File->Size = Buf.st_size;
 793    File->mtime = Buf.st_mtime;
 794
 795    pkgTagFile TagFile(&Rel, Rel.Size());
 796    pkgTagSection Section;
 797    if (Rel.IsOpen() == false || Rel.Failed() || TagFile.Step(Section) == false)
 798       return false;
 799
 800    std::string data;
 801    #define APT_INRELEASE(TYPE, TAG, STORE) \
 802    data = Section.FindS(TAG); \
 803    if (data.empty() == false) \
 804    { \
 805       map_stringitem_t const storage = Gen.StoreString(pkgCacheGenerator::TYPE, data); \
 806       if (storage == 0) return false; \
 807       STORE = storage; \
 808    }
 809    APT_INRELEASE(MIXED, "Suite", File->Archive)
 810    APT_INRELEASE(VERSIONNUMBER, "Version", File->Version)
 811    APT_INRELEASE(MIXED, "Origin", File->Origin)
 812    APT_INRELEASE(MIXED, "Codename", File->Codename)
 813    APT_INRELEASE(MIXED, "Label", File->Label)
 814    #undef APT_INRELEASE
 815    Section.FindFlag("NotAutomatic", File->Flags, pkgCache::Flag::NotAutomatic);
 816    Section.FindFlag("ButAutomaticUpgrades", File->Flags, pkgCache::Flag::ButAutomaticUpgrades);
 817
 818    return true;
 819 }
 820                                                                         /*}}}*/
 821 // ReleaseIndex::FindInCache - Find this index                          /*{{{*/
 822 pkgCache::RlsFileIterator debReleaseIndex::FindInCache(pkgCache &Cache, bool const ModifyCheck) const
 823 {
 824    std::string ReleaseFile;
 825    bool const releaseExists = ReleaseFileName(this, ReleaseFile);
 826
 827    pkgCache::RlsFileIterator File = Cache.RlsFileBegin();
 828    for (; File.end() == false; ++File)
 829    {
 830        if (File->FileName == 0 || ReleaseFile != File.FileName())
 831          continue;
 832
 833        // empty means the file does not exist by "design"
 834        if (ModifyCheck == false || (releaseExists == false && File->Size == 0))
 835           return File;
 836
 837       struct stat St;
 838       if (stat(File.FileName(),&St) != 0)
 839       {
 840          if (_config->FindB("Debug::pkgCacheGen", false))
 841             std::clog << "ReleaseIndex::FindInCache - stat failed on " << File.FileName() << std::endl;
 842          return pkgCache::RlsFileIterator(Cache);
 843       }
 844       if ((unsigned)St.st_size != File->Size || St.st_mtime != File->mtime)
 845       {
 846          if (_config->FindB("Debug::pkgCacheGen", false))
 847             std::clog << "ReleaseIndex::FindInCache - size (" << St.st_size << " <> " << File->Size
 848                         << ") or mtime (" << St.st_mtime << " <> " << File->mtime
 849                         << ") doesn't match for " << File.FileName() << std::endl;
 850          return pkgCache::RlsFileIterator(Cache);
 851       }
 852       return File;
 853    }
 854
 855    return File;
 856 }
 857                                                                         /*}}}*/
 858
 859 static std::vector<std::string> parsePlusMinusOptions(std::string const &Name, /*{{{*/
 860       std::map<std::string, std::string> const &Options, std::vector<std::string> const &defaultValues)
 861 {
 862    std::map<std::string, std::string>::const_iterator val = Options.find(Name);
 863    std::vector<std::string> Values;
 864    if (val != Options.end())
 865       Values = VectorizeString(val->second, ',');
 866    else
 867       Values = defaultValues;
 868
 869    // all is a very special architecture users shouldn't be concerned with explicitly
 870    if (Name == "arch" && std::find(Values.begin(), Values.end(), "all") == Values.end())
 871       Values.push_back("all");
 872
 873    if ((val = Options.find(Name + "+")) != Options.end())
 874    {
 875       std::vector<std::string> const plus = VectorizeString(val->second, ',');
 876       std::copy_if(plus.begin(), plus.end(), std::back_inserter(Values), [&Values](std::string const &v) {
 877          return std::find(Values.begin(), Values.end(), v) == Values.end();
 878       });
 879    }
 880    if ((val = Options.find(Name + "-")) != Options.end())
 881    {
 882       std::vector<std::string> const minus = VectorizeString(val->second, ',');
 883       Values.erase(std::remove_if(Values.begin(), Values.end(), [&minus](std::string const &v) {
 884          return std::find(minus.begin(), minus.end(), v) != minus.end();
 885       }), Values.end());
 886    }
 887    return Values;
 888 }
 889                                                                         /*}}}*/
 890 class APT_HIDDEN debSLTypeDebian : public pkgSourceList::Type           /*{{{*/
 891 {
 892    metaIndex::TriState GetTriStateOption(std::map<std::string, std::string>const &Options, char const * const name) const
 893    {
 894       std::map<std::string, std::string>::const_iterator const opt = Options.find(name);
 895       if (opt != Options.end())
 896          return StringToBool(opt->second, false) ? metaIndex::TRI_YES : metaIndex::TRI_NO;
 897       return metaIndex::TRI_DONTCARE;
 898    }
 899
 900    static time_t GetTimeOption(std::map<std::string, std::string>const &Options, char const * const name)
 901    {
 902       std::map<std::string, std::string>::const_iterator const opt = Options.find(name);
 903       if (opt == Options.end())
 904          return 0;
 905       return strtoull(opt->second.c_str(), NULL, 10);
 906    }
 907
 908    static bool GetBoolOption(std::map<std::string, std::string> const &Options, char const * const name, bool const defVal)
 909    {
 910       std::map<std::string, std::string>::const_iterator const opt = Options.find(name);
 911       if (opt == Options.end())
 912          return defVal;
 913       return StringToBool(opt->second, defVal);
 914    }
 915
 916    static std::vector<std::string> GetMapKeys(std::map<std::string, std::string> const &Options)
 917    {
 918       std::vector<std::string> ret;
 919       ret.reserve(Options.size());
 920       for (auto &&O: Options)
 921          ret.emplace_back(O.first);
 922       std::sort(ret.begin(), ret.end());
 923       return ret;
 924    }
 925
 926    static bool MapsAreEqual(std::map<std::string, std::string> const &OptionsA,
 927          std::map<std::string, std::string> const &OptionsB,
 928          std::string const &URI, std::string const &Dist)
 929    {
 930       auto const KeysA = GetMapKeys(OptionsA);
 931       auto const KeysB = GetMapKeys(OptionsB);
 932       auto const m = std::mismatch(KeysA.begin(), KeysA.end(), KeysB.begin());
 933       if (m.first != KeysA.end())
 934       {
 935          if (std::find(KeysB.begin(), KeysB.end(), *m.first) == KeysB.end())
 936             return _error->Error(_("Conflicting values set for option %s regarding source %s %s"), m.first->c_str(), "<set>", "<unset>");
 937          else
 938             return _error->Error(_("Conflicting values set for option %s regarding source %s %s"), m.second->c_str(), "<set>", "<unset>");
 939       }
 940       if (m.second != KeysB.end())
 941       {
 942          if (std::find(KeysA.begin(), KeysA.end(), *m.second) == KeysA.end())
 943             return _error->Error(_("Conflicting values set for option %s regarding source %s %s"), m.first->c_str(), "<set>", "<unset>");
 944          else
 945             return _error->Error(_("Conflicting values set for option %s regarding source %s %s"), m.second->c_str(), "<set>", "<unset>");
 946       }
 947       for (auto&& key: KeysA)
 948       {
 949          if (key == "BASE_URI" || key == "REPO_URI")
 950             continue;
 951          auto const a = OptionsA.find(key);
 952          auto const b = OptionsB.find(key);
 953          if (unlikely(a == OptionsA.end() || b == OptionsB.end()) || a->second != b->second)
 954             return _error->Error(_("Conflicting values set for option %s regarding source %s %s"), key.c_str(), URI.c_str(), Dist.c_str());
 955       }
 956       return true;
 957    }
 958
 959    protected:
 960
 961    bool CreateItemInternal(std::vector<metaIndex *> &List, std::string const &URI,
 962                            std::string const &Dist, std::string const &Section,
 963                            bool const &IsSrc, std::map<std::string, std::string> const &Options) const
 964    {
 965       std::map<std::string,std::string> ReleaseOptions = {{
 966          { "BASE_URI", constructMetaIndexURI(URI, Dist, "") },
 967          { "REPO_URI", URI },
 968       }};
 969       if (GetBoolOption(Options, "allow-insecure", _config->FindB("Acquire::AllowInsecureRepositories")))
 970          ReleaseOptions.emplace("ALLOW_INSECURE", "true");
 971       if (GetBoolOption(Options, "allow-weak", _config->FindB("Acquire::AllowWeakRepositories")))
 972          ReleaseOptions.emplace("ALLOW_WEAK", "true");
 973       if (GetBoolOption(Options, "allow-downgrade-to-insecure", _config->FindB("Acquire::AllowDowngradeToInsecureRepositories")))
 974          ReleaseOptions.emplace("ALLOW_DOWNGRADE_TO_INSECURE", "true");
 975
 976       debReleaseIndex * Deb = nullptr;
 977       std::string const FileName = URItoFileName(constructMetaIndexURI(URI, Dist, "Release"));
 978       for (auto const &I: List)
 979       {
 980          // We only worry about debian entries here
 981          if (strcmp(I->GetType(), "deb") != 0)
 982             continue;
 983
 984          auto const D = dynamic_cast<debReleaseIndex*>(I);
 985          if (unlikely(D == nullptr))
 986             continue;
 987
 988          /* This check ensures that there will be only one Release file
 989             queued for all the Packages files and Sources files it
 990             corresponds to. */
 991          if (URItoFileName(D->MetaIndexURI("Release")) == FileName)
 992          {
 993             if (MapsAreEqual(ReleaseOptions, D->GetReleaseOptions(), URI, Dist) == false)
 994                return false;
 995             Deb = D;
 996             break;
 997          }
 998       }
 999
1000       // No currently created Release file indexes this entry, so we create a new one.
1001       if (Deb == nullptr)
1002       {
1003          Deb = new debReleaseIndex(URI, Dist, ReleaseOptions);
1004          List.push_back(Deb);
1005       }
1006
1007       std::vector<std::string> const alltargets = _config->FindVector(std::string("Acquire::IndexTargets::") + Name, "", true);
1008       std::vector<std::string> deftargets;
1009       deftargets.reserve(alltargets.size());
1010       std::copy_if(alltargets.begin(), alltargets.end(), std::back_inserter(deftargets), [&](std::string const &t) {
1011          std::string c = "Acquire::IndexTargets::";
1012          c.append(Name).append("::").append(t).append("::DefaultEnabled");
1013          return _config->FindB(c, true);
1014       });
1015       std::vector<std::string> mytargets = parsePlusMinusOptions("target", Options, deftargets);
1016       for (auto const &target : alltargets)
1017       {
1018          std::map<std::string, std::string>::const_iterator const opt = Options.find(target);
1019          if (opt == Options.end())
1020             continue;
1021          auto const idMatch = [&](std::string const &t) {
1022             return target == _config->Find(std::string("Acquire::IndexTargets::") + Name + "::" + t + "::Identifier", t);
1023          };
1024          if (StringToBool(opt->second))
1025             std::copy_if(alltargets.begin(), alltargets.end(), std::back_inserter(mytargets), idMatch);
1026          else
1027             mytargets.erase(std::remove_if(mytargets.begin(), mytargets.end(), idMatch), mytargets.end());
1028       }
1029       // if we can't order it in a 1000 steps we give up… probably a cycle
1030       for (auto i = 0; i < 1000; ++i)
1031       {
1032          bool Changed = false;
1033          for (auto t = mytargets.begin(); t != mytargets.end(); ++t)
1034          {
1035             std::string const fallback = _config->Find(std::string("Acquire::IndexTargets::") + Name + "::" + *t + "::Fallback-Of");
1036             if (fallback.empty())
1037                continue;
1038             auto const faller = std::find(mytargets.begin(), mytargets.end(), fallback);
1039             if (faller == mytargets.end() || faller < t)
1040                continue;
1041             Changed = true;
1042             auto const tv = *t;
1043             mytargets.erase(t);
1044             mytargets.emplace_back(tv);
1045          }
1046          if (Changed == false)
1047             break;
1048       }
1049       // remove duplicates without changing the order (in first appearance)
1050       {
1051          std::set<std::string> seenOnce;
1052          mytargets.erase(std::remove_if(mytargets.begin(), mytargets.end(), [&](std::string const &t) {
1053             return seenOnce.insert(t).second == false;
1054          }), mytargets.end());
1055       }
1056
1057       bool const UsePDiffs = GetBoolOption(Options, "pdiffs", _config->FindB("Acquire::PDiffs", true));
1058
1059       std::string UseByHash = _config->Find("APT::Acquire::By-Hash", "yes");
1060       UseByHash = _config->Find("Acquire::By-Hash", UseByHash);
1061       {
1062          std::string const host = ::URI(URI).Host;
1063          UseByHash = _config->Find("APT::Acquire::" + host + "::By-Hash", UseByHash);
1064          UseByHash = _config->Find("Acquire::" + host + "::By-Hash", UseByHash);
1065          std::map<std::string, std::string>::const_iterator const opt = Options.find("by-hash");
1066          if (opt != Options.end())
1067             UseByHash = opt->second;
1068       }
1069
1070       auto const entry = Options.find("sourceslist-entry");
1071       Deb->AddComponent(
1072             entry->second,
1073             IsSrc,
1074             Section,
1075             mytargets,
1076             parsePlusMinusOptions("arch", Options, APT::Configuration::getArchitectures()),
1077             parsePlusMinusOptions("lang", Options, APT::Configuration::getLanguages(true)),
1078             UsePDiffs,
1079             UseByHash
1080             );
1081
1082       if (Deb->SetTrusted(GetTriStateOption(Options, "trusted")) == false ||
1083          Deb->SetCheckValidUntil(GetTriStateOption(Options, "check-valid-until")) == false ||
1084          Deb->SetValidUntilMax(GetTimeOption(Options, "valid-until-max")) == false ||
1085          Deb->SetValidUntilMin(GetTimeOption(Options, "valid-until-min")) == false)
1086          return false;
1087
1088       std::map<std::string, std::string>::const_iterator const signedby = Options.find("signed-by");
1089       if (signedby == Options.end())
1090       {
1091          bool alreadySet = false;
1092          std::string filename;
1093          if (ReleaseFileName(Deb, filename))
1094          {
1095             auto OldDeb = Deb->UnloadedClone();
1096             _error->PushToStack();
1097             OldDeb->Load(filename, nullptr);
1098             bool const goodLoad = _error->PendingError() == false;
1099             _error->RevertToStack();
1100             if (goodLoad)
1101             {
1102                if (OldDeb->GetValidUntil() > 0)
1103                {
1104                   time_t const invalid_since = time(NULL) - OldDeb->GetValidUntil();
1105                   if (invalid_since <= 0)
1106                   {
1107                      Deb->SetSignedBy(OldDeb->GetSignedBy());
1108                      alreadySet = true;
1109                   }
1110                }
1111             }
1112             delete OldDeb;
1113          }
1114          if (alreadySet == false && Deb->SetSignedBy("") == false)
1115             return false;
1116       }
1117       else
1118       {
1119          if (Deb->SetSignedBy(signedby->second) == false)
1120             return false;
1121       }
1122
1123       return true;
1124    }
1125
1126    debSLTypeDebian(char const * const Name, char const * const Label) : Type(Name, Label)
1127    {
1128    }
1129 };
1130                                                                         /*}}}*/
1131 class APT_HIDDEN debSLTypeDeb : public debSLTypeDebian                  /*{{{*/
1132 {
1133    public:
1134
1135    bool CreateItem(std::vector<metaIndex *> &List, std::string const &URI,
1136                    std::string const &Dist, std::string const &Section,
1137                    std::map<std::string, std::string> const &Options) const APT_OVERRIDE
1138    {
1139       return CreateItemInternal(List, URI, Dist, Section, false, Options);
1140    }
1141
1142    debSLTypeDeb() : debSLTypeDebian("deb", "Debian binary tree")
1143    {
1144    }
1145 };
1146                                                                         /*}}}*/
1147 class APT_HIDDEN debSLTypeDebSrc : public debSLTypeDebian               /*{{{*/
1148 {
1149    public:
1150
1151    bool CreateItem(std::vector<metaIndex *> &List, std::string const &URI,
1152                    std::string const &Dist, std::string const &Section,
1153                    std::map<std::string, std::string> const &Options) const APT_OVERRIDE
1154    {
1155       return CreateItemInternal(List, URI, Dist, Section, true, Options);
1156    }
1157
1158    debSLTypeDebSrc() : debSLTypeDebian("deb-src", "Debian source tree")
1159    {
1160    }
1161 };
1162                                                                         /*}}}*/
1163
1164 APT_HIDDEN debSLTypeDeb _apt_DebType;
1165 APT_HIDDEN debSLTypeDebSrc _apt_DebSrcType;