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