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
  25 #include <sys/stat.h>
  26 #include <string.h>
  27
  28 #include <apti18n.h>
  29
  30 class APT_HIDDEN debReleaseIndexPrivate                                 /*{{{*/
  31 {
  32    public:
  33    struct APT_HIDDEN debSectionEntry
  34    {
  35       std::string Name;
  36       std::vector<std::string> Targets;
  37       std::vector<std::string> Architectures;
  38       std::vector<std::string> Languages;
  39    };
  40
  41    std::vector<debSectionEntry> DebEntries;
  42    std::vector<debSectionEntry> DebSrcEntries;
  43
  44    metaIndex::TriState CheckValidUntil;
  45    time_t ValidUntilMin;
  46    time_t ValidUntilMax;
  47
  48    debReleaseIndexPrivate() : CheckValidUntil(metaIndex::TRI_UNSET), ValidUntilMin(0), ValidUntilMax(0) {}
  49 };
  50                                                                         /*}}}*/
  51 // ReleaseIndex::MetaIndex* - display helpers                           /*{{{*/
  52 std::string debReleaseIndex::MetaIndexInfo(const char *Type) const
  53 {
  54    std::string Info = ::URI::ArchiveOnly(URI) + ' ';
  55    if (Dist[Dist.size() - 1] == '/')
  56    {
  57       if (Dist != "/")
  58          Info += Dist;
  59    }
  60    else
  61       Info += Dist;
  62    Info += " ";
  63    Info += Type;
  64    return Info;
  65 }
  66 std::string debReleaseIndex::Describe() const
  67 {
  68    return MetaIndexInfo("Release");
  69 }
  70
  71 std::string debReleaseIndex::MetaIndexFile(const char *Type) const
  72 {
  73    return _config->FindDir("Dir::State::lists") +
  74       URItoFileName(MetaIndexURI(Type));
  75 }
  76
  77 std::string debReleaseIndex::MetaIndexURI(const char *Type) const
  78 {
  79    std::string Res;
  80
  81    if (Dist == "/")
  82       Res = URI;
  83    else if (Dist[Dist.size()-1] == '/')
  84       Res = URI + Dist;
  85    else
  86       Res = URI + "dists/" + Dist + "/";
  87
  88    Res += Type;
  89    return Res;
  90 }
  91                                                                         /*}}}*/
  92 // ReleaseIndex Con- and Destructors                                    /*{{{*/
  93 debReleaseIndex::debReleaseIndex(std::string const &URI, std::string const &Dist) :
  94                                         metaIndex(URI, Dist, "deb"), d(new debReleaseIndexPrivate())
  95 {}
  96 debReleaseIndex::debReleaseIndex(std::string const &URI, std::string const &Dist, bool const pTrusted) :
  97                                         metaIndex(URI, Dist, "deb"), d(new debReleaseIndexPrivate())
  98 {
  99    Trusted = pTrusted ? TRI_YES : TRI_NO;
 100 }
 101 debReleaseIndex::~debReleaseIndex() {
 102    if (d != NULL)
 103       delete d;
 104 }
 105                                                                         /*}}}*/
 106 // ReleaseIndex::GetIndexTargets                                        /*{{{*/
 107 static void GetIndexTargetsFor(char const * const Type, std::string const &URI, std::string const &Dist,
 108       std::vector<debReleaseIndexPrivate::debSectionEntry> const &entries,
 109       std::vector<IndexTarget> &IndexTargets)
 110 {
 111    bool const flatArchive = (Dist[Dist.length() - 1] == '/');
 112    std::string baseURI = URI;
 113    if (flatArchive)
 114    {
 115       if (Dist != "/")
 116          baseURI += Dist;
 117    }
 118    else
 119       baseURI += "dists/" + Dist + "/";
 120    std::string const Release = (Dist == "/") ? "" : Dist;
 121    std::string const Site = ::URI::ArchiveOnly(URI);
 122
 123    bool const GzipIndex = _config->FindB("Acquire::GzipIndexes", false);
 124    for (std::vector<debReleaseIndexPrivate::debSectionEntry>::const_iterator E = entries.begin(); E != entries.end(); ++E)
 125    {
 126       for (std::vector<std::string>::const_iterator T = E->Targets.begin(); T != E->Targets.end(); ++T)
 127       {
 128 #define APT_T_CONFIG(X) _config->Find(std::string("Acquire::IndexTargets::") + Type  + "::" + *T + "::" + (X))
 129          std::string const tplMetaKey = APT_T_CONFIG(flatArchive ? "flatMetaKey" : "MetaKey");
 130          std::string const tplShortDesc = APT_T_CONFIG("ShortDescription");
 131          std::string const tplLongDesc = "$(SITE) " + APT_T_CONFIG(flatArchive ? "flatDescription" : "Description");
 132          bool const IsOptional = _config->FindB(std::string("Acquire::IndexTargets::") + Type + "::" + *T + "::Optional", true);
 133          bool const KeepCompressed = _config->FindB(std::string("Acquire::IndexTargets::") + Type + "::" + *T + "::KeepCompressed", GzipIndex);
 134 #undef APT_T_CONFIG
 135          if (tplMetaKey.empty())
 136             continue;
 137
 138          for (std::vector<std::string>::const_iterator L = E->Languages.begin(); L != E->Languages.end(); ++L)
 139          {
 140             if (*L == "none" && tplMetaKey.find("$(LANGUAGE)") != std::string::npos)
 141                continue;
 142
 143             for (std::vector<std::string>::const_iterator A = E->Architectures.begin(); A != E->Architectures.end(); ++A)
 144             {
 145
 146                std::map<std::string, std::string> Options;
 147                Options.insert(std::make_pair("SITE", Site));
 148                Options.insert(std::make_pair("RELEASE", Release));
 149                if (tplMetaKey.find("$(COMPONENT)") != std::string::npos)
 150                   Options.insert(std::make_pair("COMPONENT", E->Name));
 151                if (tplMetaKey.find("$(LANGUAGE)") != std::string::npos)
 152                   Options.insert(std::make_pair("LANGUAGE", *L));
 153                if (tplMetaKey.find("$(ARCHITECTURE)") != std::string::npos)
 154                   Options.insert(std::make_pair("ARCHITECTURE", *A));
 155                Options.insert(std::make_pair("BASE_URI", baseURI));
 156                Options.insert(std::make_pair("REPO_URI", URI));
 157                Options.insert(std::make_pair("TARGET_OF", Type));
 158                Options.insert(std::make_pair("CREATED_BY", *T));
 159
 160                std::string MetaKey = tplMetaKey;
 161                std::string ShortDesc = tplShortDesc;
 162                std::string LongDesc = tplLongDesc;
 163                for (std::map<std::string, std::string>::const_iterator O = Options.begin(); O != Options.end(); ++O)
 164                {
 165                   MetaKey = SubstVar(MetaKey, std::string("$(") + O->first + ")", O->second);
 166                   ShortDesc = SubstVar(ShortDesc, std::string("$(") + O->first + ")", O->second);
 167                   LongDesc = SubstVar(LongDesc, std::string("$(") + O->first + ")", O->second);
 168                }
 169                IndexTarget Target(
 170                      MetaKey,
 171                      ShortDesc,
 172                      LongDesc,
 173                      Options.find("BASE_URI")->second + MetaKey,
 174                      IsOptional,
 175                      KeepCompressed,
 176                      Options
 177                      );
 178                IndexTargets.push_back(Target);
 179
 180                if (tplMetaKey.find("$(ARCHITECTURE)") == std::string::npos)
 181                   break;
 182
 183             }
 184
 185             if (tplMetaKey.find("$(LANGUAGE)") == std::string::npos)
 186                break;
 187
 188          }
 189
 190       }
 191    }
 192 }
 193 std::vector<IndexTarget> debReleaseIndex::GetIndexTargets() const
 194 {
 195    std::vector<IndexTarget> IndexTargets;
 196    GetIndexTargetsFor("deb-src", URI, Dist, d->DebSrcEntries, IndexTargets);
 197    GetIndexTargetsFor("deb", URI, Dist, d->DebEntries, IndexTargets);
 198    return IndexTargets;
 199 }
 200                                                                         /*}}}*/
 201 void debReleaseIndex::AddComponent(bool const isSrc, std::string const &Name,/*{{{*/
 202          std::vector<std::string> const &Targets,
 203          std::vector<std::string> const &Architectures,
 204          std::vector<std::string> Languages)
 205 {
 206    if (Languages.empty() == true)
 207       Languages.push_back("none");
 208    debReleaseIndexPrivate::debSectionEntry const entry = {
 209       Name, Targets, Architectures, Languages
 210    };
 211    if (isSrc)
 212       d->DebSrcEntries.push_back(entry);
 213    else
 214       d->DebEntries.push_back(entry);
 215 }
 216                                                                         /*}}}*/
 217
 218 bool debReleaseIndex::Load(std::string const &Filename, std::string * const ErrorText)/*{{{*/
 219 {
 220    LoadedSuccessfully = TRI_NO;
 221    FileFd Fd;
 222    if (OpenMaybeClearSignedFile(Filename, Fd) == false)
 223       return false;
 224
 225    pkgTagFile TagFile(&Fd, Fd.Size());
 226    if (_error->PendingError() == true)
 227    {
 228       if (ErrorText != NULL)
 229          strprintf(*ErrorText, _("Unable to parse Release file %s"),Filename.c_str());
 230       return false;
 231    }
 232
 233    pkgTagSection Section;
 234    const char *Start, *End;
 235    if (TagFile.Step(Section) == false)
 236    {
 237       if (ErrorText != NULL)
 238          strprintf(*ErrorText, _("No sections in Release file %s"), Filename.c_str());
 239       return false;
 240    }
 241    // FIXME: find better tag name
 242    SupportsAcquireByHash = Section.FindB("Acquire-By-Hash", false);
 243
 244    Suite = Section.FindS("Suite");
 245    Codename = Section.FindS("Codename");
 246
 247    bool FoundHashSum = false;
 248    for (int i=0;HashString::SupportedHashes()[i] != NULL; i++)
 249    {
 250       if (!Section.Find(HashString::SupportedHashes()[i], Start, End))
 251          continue;
 252
 253       std::string Name;
 254       std::string Hash;
 255       unsigned long long Size;
 256       while (Start < End)
 257       {
 258          if (!parseSumData(Start, End, Name, Hash, Size))
 259             return false;
 260
 261          if (Entries.find(Name) == Entries.end())
 262          {
 263             metaIndex::checkSum *Sum = new metaIndex::checkSum;
 264             Sum->MetaKeyFilename = Name;
 265             Sum->Size = Size;
 266             Sum->Hashes.FileSize(Size);
 267             APT_IGNORE_DEPRECATED(Sum->Hash = HashString(HashString::SupportedHashes()[i],Hash);)
 268             Entries[Name] = Sum;
 269          }
 270          Entries[Name]->Hashes.push_back(HashString(HashString::SupportedHashes()[i],Hash));
 271          FoundHashSum = true;
 272       }
 273    }
 274
 275    if(FoundHashSum == false)
 276    {
 277       if (ErrorText != NULL)
 278          strprintf(*ErrorText, _("No Hash entry in Release file %s"), Filename.c_str());
 279       return false;
 280    }
 281
 282    std::string const StrDate = Section.FindS("Date");
 283    if (RFC1123StrToTime(StrDate.c_str(), Date) == false)
 284    {
 285       if (ErrorText != NULL)
 286          strprintf(*ErrorText, _("Invalid 'Date' entry in Release file %s"), Filename.c_str());
 287       return false;
 288    }
 289
 290    bool CheckValidUntil = _config->FindB("Acquire::Check-Valid-Until", true);
 291    if (d->CheckValidUntil == metaIndex::TRI_NO)
 292       CheckValidUntil = false;
 293    else if (d->CheckValidUntil == metaIndex::TRI_YES)
 294       CheckValidUntil = true;
 295
 296    if (CheckValidUntil == true)
 297    {
 298       std::string const Label = Section.FindS("Label");
 299       std::string const StrValidUntil = Section.FindS("Valid-Until");
 300
 301       // if we have a Valid-Until header in the Release file, use it as default
 302       if (StrValidUntil.empty() == false)
 303       {
 304          if(RFC1123StrToTime(StrValidUntil.c_str(), ValidUntil) == false)
 305          {
 306             if (ErrorText != NULL)
 307                strprintf(*ErrorText, _("Invalid 'Valid-Until' entry in Release file %s"), Filename.c_str());
 308             return false;
 309          }
 310       }
 311       // get the user settings for this archive and use what expires earlier
 312       time_t MaxAge = d->ValidUntilMax;
 313       if (MaxAge == 0)
 314       {
 315          MaxAge = _config->FindI("Acquire::Max-ValidTime", 0);
 316          if (Label.empty() == false)
 317             MaxAge = _config->FindI(("Acquire::Max-ValidTime::" + Label).c_str(), MaxAge);
 318       }
 319       time_t MinAge = d->ValidUntilMin;
 320       if (MinAge == 0)
 321       {
 322          MinAge = _config->FindI("Acquire::Min-ValidTime", 0);
 323          if (Label.empty() == false)
 324             MinAge = _config->FindI(("Acquire::Min-ValidTime::" + Label).c_str(), MinAge);
 325       }
 326
 327       if (MinAge != 0 && ValidUntil != 0) {
 328          time_t const min_date = Date + MinAge;
 329          if (ValidUntil < min_date)
 330             ValidUntil = min_date;
 331       }
 332       if (MaxAge != 0) {
 333          time_t const max_date = Date + MaxAge;
 334          if (ValidUntil == 0 || ValidUntil > max_date)
 335             ValidUntil = max_date;
 336       }
 337    }
 338
 339    LoadedSuccessfully = TRI_YES;
 340    return true;
 341 }
 342                                                                         /*}}}*/
 343 metaIndex * debReleaseIndex::UnloadedClone() const                      /*{{{*/
 344 {
 345    if (Trusted == TRI_NO)
 346       return new debReleaseIndex(URI, Dist, false);
 347    else if (Trusted == TRI_YES)
 348       return new debReleaseIndex(URI, Dist, true);
 349    else
 350       return new debReleaseIndex(URI, Dist);
 351 }
 352                                                                         /*}}}*/
 353 bool debReleaseIndex::parseSumData(const char *&Start, const char *End, /*{{{*/
 354                                    std::string &Name, std::string &Hash, unsigned long long &Size)
 355 {
 356    Name = "";
 357    Hash = "";
 358    Size = 0;
 359    /* Skip over the first blank */
 360    while ((*Start == '\t' || *Start == ' ' || *Start == '\n' || *Start == '\r')
 361           && Start < End)
 362       Start++;
 363    if (Start >= End)
 364       return false;
 365
 366    /* Move EntryEnd to the end of the first entry (the hash) */
 367    const char *EntryEnd = Start;
 368    while ((*EntryEnd != '\t' && *EntryEnd != ' ')
 369           && EntryEnd < End)
 370       EntryEnd++;
 371    if (EntryEnd == End)
 372       return false;
 373
 374    Hash.append(Start, EntryEnd-Start);
 375
 376    /* Skip over intermediate blanks */
 377    Start = EntryEnd;
 378    while (*Start == '\t' || *Start == ' ')
 379       Start++;
 380    if (Start >= End)
 381       return false;
 382
 383    EntryEnd = Start;
 384    /* Find the end of the second entry (the size) */
 385    while ((*EntryEnd != '\t' && *EntryEnd != ' ' )
 386           && EntryEnd < End)
 387       EntryEnd++;
 388    if (EntryEnd == End)
 389       return false;
 390
 391    Size = strtoull (Start, NULL, 10);
 392
 393    /* Skip over intermediate blanks */
 394    Start = EntryEnd;
 395    while (*Start == '\t' || *Start == ' ')
 396       Start++;
 397    if (Start >= End)
 398       return false;
 399
 400    EntryEnd = Start;
 401    /* Find the end of the third entry (the filename) */
 402    while ((*EntryEnd != '\t' && *EntryEnd != ' ' &&
 403            *EntryEnd != '\n' && *EntryEnd != '\r')
 404           && EntryEnd < End)
 405       EntryEnd++;
 406
 407    Name.append(Start, EntryEnd-Start);
 408    Start = EntryEnd; //prepare for the next round
 409    return true;
 410 }
 411                                                                         /*}}}*/
 412
 413 bool debReleaseIndex::GetIndexes(pkgAcquire *Owner, bool const &GetAll)/*{{{*/
 414 {
 415    std::vector<IndexTarget> const targets = GetIndexTargets();
 416 #define APT_TARGET(X) IndexTarget("", X, MetaIndexInfo(X), MetaIndexURI(X), false, false, std::map<std::string,std::string>())
 417    pkgAcqMetaClearSig * const TransactionManager = new pkgAcqMetaClearSig(Owner,
 418          APT_TARGET("InRelease"), APT_TARGET("Release"), APT_TARGET("Release.gpg"),
 419          targets, this);
 420 #undef APT_TARGET
 421    // special case for --print-uris
 422    if (GetAll)
 423    {
 424       for (std::vector<IndexTarget>::const_iterator Target = targets.begin(); Target != targets.end(); ++Target)
 425          new pkgAcqIndex(Owner, TransactionManager, *Target);
 426    }
 427
 428    return true;
 429 }
 430                                                                         /*}}}*/
 431 // ReleaseIndex::Set* TriState options                                  /*{{{*/
 432 bool debReleaseIndex::SetTrusted(TriState const pTrusted)
 433 {
 434    if (Trusted == TRI_UNSET)
 435       Trusted = pTrusted;
 436    else if (Trusted != pTrusted)
 437       // TRANSLATOR: The first is an option name from sources.list manpage, the other two URI and Suite
 438       return _error->Error(_("Conflicting values set for option %s concerning source %s %s"), "Trusted", URI.c_str(), Dist.c_str());
 439    return true;
 440 }
 441 bool debReleaseIndex::SetCheckValidUntil(TriState const pCheckValidUntil)
 442 {
 443    if (d->CheckValidUntil == TRI_UNSET)
 444       d->CheckValidUntil = pCheckValidUntil;
 445    else if (d->CheckValidUntil != pCheckValidUntil)
 446       return _error->Error(_("Conflicting values set for option %s concerning source %s %s"), "Check-Valid-Until", URI.c_str(), Dist.c_str());
 447    return true;
 448 }
 449 bool debReleaseIndex::SetValidUntilMin(time_t const Valid)
 450 {
 451    if (d->ValidUntilMin == 0)
 452       d->ValidUntilMin = Valid;
 453    else if (d->ValidUntilMin != Valid)
 454       return _error->Error(_("Conflicting values set for option %s concerning source %s %s"), "Min-ValidTime", URI.c_str(), Dist.c_str());
 455    return true;
 456 }
 457 bool debReleaseIndex::SetValidUntilMax(time_t const Valid)
 458 {
 459    if (d->ValidUntilMax == 0)
 460       d->ValidUntilMax = Valid;
 461    else if (d->ValidUntilMax != Valid)
 462       return _error->Error(_("Conflicting values set for option %s concerning source %s %s"), "Max-ValidTime", URI.c_str(), Dist.c_str());
 463    return true;
 464 }
 465 bool debReleaseIndex::SetSignedBy(std::string const &pSignedBy)
 466 {
 467    if (SignedBy.empty() == true && pSignedBy.empty() == false)
 468    {
 469       if (pSignedBy[0] == '/') // no check for existence as we could be chrooting later or such things
 470          ; // absolute path to a keyring file
 471       else
 472       {
 473          // we could go all fancy and allow short/long/string matches as gpgv/apt-key does,
 474          // but fingerprints are harder to fake than the others and this option is set once,
 475          // not interactively all the time so easy to type is not really a concern.
 476          std::string finger = pSignedBy;
 477          finger.erase(std::remove(finger.begin(), finger.end(), ' '), finger.end());
 478          std::transform(finger.begin(), finger.end(), finger.begin(), ::toupper);
 479          if (finger.length() != 40 || finger.find_first_not_of("0123456789ABCDEF") != std::string::npos)
 480             return _error->Error(_("Invalid value set for option %s concerning source %s %s (%s)"), "Signed-By", URI.c_str(), Dist.c_str(), "not a fingerprint");
 481       }
 482       SignedBy = pSignedBy;
 483    }
 484    else if (SignedBy != pSignedBy)
 485       return _error->Error(_("Conflicting values set for option %s concerning source %s %s"), "Signed-By", URI.c_str(), Dist.c_str());
 486    return true;
 487 }
 488                                                                         /*}}}*/
 489 // ReleaseIndex::IsTrusted                                              /*{{{*/
 490 bool debReleaseIndex::IsTrusted() const
 491 {
 492    if (Trusted == TRI_YES)
 493       return true;
 494    else if (Trusted == TRI_NO)
 495       return false;
 496
 497
 498    if(_config->FindB("APT::Authentication::TrustCDROM", false))
 499       if(URI.substr(0,strlen("cdrom:")) == "cdrom:")
 500          return true;
 501
 502    if (FileExists(MetaIndexFile("Release.gpg")))
 503       return true;
 504
 505    return FileExists(MetaIndexFile("InRelease"));
 506 }
 507                                                                         /*}}}*/
 508 std::vector <pkgIndexFile *> *debReleaseIndex::GetIndexFiles()          /*{{{*/
 509 {
 510    if (Indexes != NULL)
 511       return Indexes;
 512
 513    Indexes = new std::vector<pkgIndexFile*>();
 514    std::vector<IndexTarget> const Targets = GetIndexTargets();
 515    bool const istrusted = IsTrusted();
 516    for (std::vector<IndexTarget>::const_iterator T = Targets.begin(); T != Targets.end(); ++T)
 517    {
 518       std::string const TargetName = T->Option(IndexTarget::CREATED_BY);
 519       if (TargetName == "Packages")
 520          Indexes->push_back(new debPackagesIndex(*T, istrusted));
 521       else if (TargetName == "Sources")
 522          Indexes->push_back(new debSourcesIndex(*T, istrusted));
 523       else if (TargetName == "Translations")
 524          Indexes->push_back(new debTranslationsIndex(*T));
 525    }
 526    return Indexes;
 527 }
 528                                                                         /*}}}*/
 529
 530 static bool ReleaseFileName(debReleaseIndex const * const That, std::string &ReleaseFile)/*{{{*/
 531 {
 532    ReleaseFile = That->MetaIndexFile("InRelease");
 533    bool releaseExists = false;
 534    if (FileExists(ReleaseFile) == true)
 535       releaseExists = true;
 536    else
 537    {
 538       ReleaseFile = That->MetaIndexFile("Release");
 539       if (FileExists(ReleaseFile))
 540          releaseExists = true;
 541    }
 542    return releaseExists;
 543 }
 544                                                                         /*}}}*/
 545 bool debReleaseIndex::Merge(pkgCacheGenerator &Gen,OpProgress * /*Prog*/) const/*{{{*/
 546 {
 547    std::string ReleaseFile;
 548    bool const releaseExists = ReleaseFileName(this, ReleaseFile);
 549
 550    ::URI Tmp(URI);
 551    if (Gen.SelectReleaseFile(ReleaseFile, Tmp.Host) == false)
 552       return _error->Error("Problem with SelectReleaseFile %s", ReleaseFile.c_str());
 553
 554    if (releaseExists == false)
 555       return true;
 556
 557    FileFd Rel;
 558    // Beware: The 'Release' file might be clearsigned in case the
 559    // signature for an 'InRelease' file couldn't be checked
 560    if (OpenMaybeClearSignedFile(ReleaseFile, Rel) == false)
 561       return false;
 562    if (_error->PendingError() == true)
 563       return false;
 564
 565    // Store the IMS information
 566    pkgCache::RlsFileIterator File = Gen.GetCurRlsFile();
 567    pkgCacheGenerator::Dynamic<pkgCache::RlsFileIterator> DynFile(File);
 568    // Rel can't be used as this is potentially a temporary file
 569    struct stat Buf;
 570    if (stat(ReleaseFile.c_str(), &Buf) != 0)
 571       return _error->Errno("fstat", "Unable to stat file %s", ReleaseFile.c_str());
 572    File->Size = Buf.st_size;
 573    File->mtime = Buf.st_mtime;
 574
 575    pkgTagFile TagFile(&Rel, Rel.Size());
 576    pkgTagSection Section;
 577    if (_error->PendingError() == true || TagFile.Step(Section) == false)
 578       return false;
 579
 580    std::string data;
 581    #define APT_INRELEASE(TYPE, TAG, STORE) \
 582    data = Section.FindS(TAG); \
 583    if (data.empty() == false) \
 584    { \
 585       map_stringitem_t const storage = Gen.StoreString(pkgCacheGenerator::TYPE, data); \
 586       STORE = storage; \
 587    }
 588    APT_INRELEASE(MIXED, "Suite", File->Archive)
 589    APT_INRELEASE(VERSIONNUMBER, "Version", File->Version)
 590    APT_INRELEASE(MIXED, "Origin", File->Origin)
 591    APT_INRELEASE(MIXED, "Codename", File->Codename)
 592    APT_INRELEASE(MIXED, "Label", File->Label)
 593    #undef APT_INRELEASE
 594    Section.FindFlag("NotAutomatic", File->Flags, pkgCache::Flag::NotAutomatic);
 595    Section.FindFlag("ButAutomaticUpgrades", File->Flags, pkgCache::Flag::ButAutomaticUpgrades);
 596
 597    return !_error->PendingError();
 598 }
 599                                                                         /*}}}*/
 600 // ReleaseIndex::FindInCache - Find this index                          /*{{{*/
 601 pkgCache::RlsFileIterator debReleaseIndex::FindInCache(pkgCache &Cache, bool const ModifyCheck) const
 602 {
 603    std::string ReleaseFile;
 604    bool const releaseExists = ReleaseFileName(this, ReleaseFile);
 605
 606    pkgCache::RlsFileIterator File = Cache.RlsFileBegin();
 607    for (; File.end() == false; ++File)
 608    {
 609        if (File->FileName == 0 || ReleaseFile != File.FileName())
 610          continue;
 611
 612        // empty means the file does not exist by "design"
 613        if (ModifyCheck == false || (releaseExists == false && File->Size == 0))
 614           return File;
 615
 616       struct stat St;
 617       if (stat(File.FileName(),&St) != 0)
 618       {
 619          if (_config->FindB("Debug::pkgCacheGen", false))
 620             std::clog << "ReleaseIndex::FindInCache - stat failed on " << File.FileName() << std::endl;
 621          return pkgCache::RlsFileIterator(Cache);
 622       }
 623       if ((unsigned)St.st_size != File->Size || St.st_mtime != File->mtime)
 624       {
 625          if (_config->FindB("Debug::pkgCacheGen", false))
 626             std::clog << "ReleaseIndex::FindInCache - size (" << St.st_size << " <> " << File->Size
 627                         << ") or mtime (" << St.st_mtime << " <> " << File->mtime
 628                         << ") doesn't match for " << File.FileName() << std::endl;
 629          return pkgCache::RlsFileIterator(Cache);
 630       }
 631       return File;
 632    }
 633
 634    return File;
 635 }
 636                                                                         /*}}}*/
 637
 638 static std::vector<std::string> parsePlusMinusOptions(std::string const &Name, /*{{{*/
 639       std::map<std::string, std::string> const &Options, std::vector<std::string> const &defaultValues)
 640 {
 641    std::map<std::string, std::string>::const_iterator val = Options.find(Name);
 642    std::vector<std::string> Values;
 643    if (val != Options.end())
 644       Values = VectorizeString(val->second, ',');
 645    else
 646       Values = defaultValues;
 647
 648    if ((val = Options.find(Name + "+")) != Options.end())
 649    {
 650       std::vector<std::string> const plusArch = VectorizeString(val->second, ',');
 651       for (std::vector<std::string>::const_iterator plus = plusArch.begin(); plus != plusArch.end(); ++plus)
 652          if (std::find(Values.begin(), Values.end(), *plus) == Values.end())
 653             Values.push_back(*plus);
 654    }
 655    if ((val = Options.find(Name + "-")) != Options.end())
 656    {
 657       std::vector<std::string> const minusArch = VectorizeString(val->second, ',');
 658       for (std::vector<std::string>::const_iterator minus = minusArch.begin(); minus != minusArch.end(); ++minus)
 659       {
 660          std::vector<std::string>::iterator kill = std::find(Values.begin(), Values.end(), *minus);
 661          if (kill != Values.end())
 662             Values.erase(kill);
 663       }
 664    }
 665    return Values;
 666 }
 667                                                                         /*}}}*/
 668 class APT_HIDDEN debSLTypeDebian : public pkgSourceList::Type           /*{{{*/
 669 {
 670    metaIndex::TriState GetTriStateOption(std::map<std::string, std::string>const &Options, char const * const name) const
 671    {
 672       std::map<std::string, std::string>::const_iterator const opt = Options.find(name);
 673       if (opt != Options.end())
 674          return StringToBool(opt->second, false) ? metaIndex::TRI_YES : metaIndex::TRI_NO;
 675       return metaIndex::TRI_DONTCARE;
 676    }
 677
 678    time_t GetTimeOption(std::map<std::string, std::string>const &Options, char const * const name) const
 679    {
 680       std::map<std::string, std::string>::const_iterator const opt = Options.find(name);
 681       if (opt == Options.end())
 682          return 0;
 683       return strtoull(opt->second.c_str(), NULL, 10);
 684    }
 685
 686    protected:
 687
 688    bool CreateItemInternal(std::vector<metaIndex *> &List, std::string const &URI,
 689                            std::string const &Dist, std::string const &Section,
 690                            bool const &IsSrc, std::map<std::string, std::string> const &Options) const
 691    {
 692       debReleaseIndex *Deb = NULL;
 693       for (std::vector<metaIndex *>::const_iterator I = List.begin();
 694            I != List.end(); ++I)
 695       {
 696          // We only worry about debian entries here
 697          if (strcmp((*I)->GetType(), "deb") != 0)
 698             continue;
 699
 700          /* This check insures that there will be only one Release file
 701             queued for all the Packages files and Sources files it
 702             corresponds to. */
 703          if ((*I)->GetURI() == URI && (*I)->GetDist() == Dist)
 704          {
 705             Deb = dynamic_cast<debReleaseIndex*>(*I);
 706             if (Deb != NULL)
 707                break;
 708          }
 709       }
 710
 711       // No currently created Release file indexes this entry, so we create a new one.
 712       if (Deb == NULL)
 713       {
 714          Deb = new debReleaseIndex(URI, Dist);
 715          List.push_back(Deb);
 716       }
 717
 718       std::vector<std::string> const alltargets = _config->FindVector(std::string("Acquire::IndexTargets::") + Name, "", true);
 719       std::vector<std::string> mytargets = parsePlusMinusOptions("target", Options, alltargets);
 720       if (mytargets.empty() == false)
 721          for (auto const &target : alltargets)
 722          {
 723             std::map<std::string, std::string>::const_iterator const opt = Options.find(target);
 724             if (opt == Options.end())
 725                continue;
 726             auto const tarItr = std::find(mytargets.begin(), mytargets.end(), target);
 727             bool const optValue = StringToBool(opt->second);
 728             if (optValue == true && tarItr == mytargets.end())
 729                mytargets.push_back(target);
 730             else if (optValue == false && tarItr != mytargets.end())
 731                mytargets.erase(std::remove(mytargets.begin(), mytargets.end(), target), mytargets.end());
 732          }
 733       Deb->AddComponent(
 734             IsSrc,
 735             Section,
 736             mytargets,
 737             parsePlusMinusOptions("arch", Options, APT::Configuration::getArchitectures()),
 738             parsePlusMinusOptions("lang", Options, APT::Configuration::getLanguages(true))
 739             );
 740
 741       if (Deb->SetTrusted(GetTriStateOption(Options, "trusted")) == false ||
 742          Deb->SetCheckValidUntil(GetTriStateOption(Options, "check-valid-until")) == false ||
 743          Deb->SetValidUntilMax(GetTimeOption(Options, "valid-until-max")) == false ||
 744          Deb->SetValidUntilMin(GetTimeOption(Options, "valid-until-min")) == false)
 745          return false;
 746
 747       std::map<std::string, std::string>::const_iterator const signedby = Options.find("signed-by");
 748       if (signedby == Options.end())
 749       {
 750          if (Deb->SetSignedBy("") == false)
 751             return false;
 752       }
 753       else
 754       {
 755          if (Deb->SetSignedBy(signedby->second) == false)
 756             return false;
 757       }
 758
 759       return true;
 760    }
 761
 762    debSLTypeDebian(char const * const Name, char const * const Label) : Type(Name, Label)
 763    {
 764    }
 765 };
 766                                                                         /*}}}*/
 767 class APT_HIDDEN debSLTypeDeb : public debSLTypeDebian                  /*{{{*/
 768 {
 769    public:
 770
 771    bool CreateItem(std::vector<metaIndex *> &List, std::string const &URI,
 772                    std::string const &Dist, std::string const &Section,
 773                    std::map<std::string, std::string> const &Options) const APT_OVERRIDE
 774    {
 775       return CreateItemInternal(List, URI, Dist, Section, false, Options);
 776    }
 777
 778    debSLTypeDeb() : debSLTypeDebian("deb", "Debian binary tree")
 779    {
 780    }
 781 };
 782                                                                         /*}}}*/
 783 class APT_HIDDEN debSLTypeDebSrc : public debSLTypeDebian               /*{{{*/
 784 {
 785    public:
 786
 787    bool CreateItem(std::vector<metaIndex *> &List, std::string const &URI,
 788                    std::string const &Dist, std::string const &Section,
 789                    std::map<std::string, std::string> const &Options) const APT_OVERRIDE
 790    {
 791       return CreateItemInternal(List, URI, Dist, Section, true, Options);
 792    }
 793
 794    debSLTypeDebSrc() : debSLTypeDebian("deb-src", "Debian source tree")
 795    {
 796    }
 797 };
 798                                                                         /*}}}*/
 799
 800 APT_HIDDEN debSLTypeDeb _apt_DebType;
 801 APT_HIDDEN debSLTypeDebSrc _apt_DebSrcType;