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 sourcesEntry;
  37       std::string Name;
  38       std::vector<std::string> Targets;
  39       std::vector<std::string> Architectures;
  40       std::vector<std::string> Languages;
  41       bool UsePDiffs;
  42       std::string 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
  54    debReleaseIndexPrivate() : CheckValidUntil(metaIndex::TRI_UNSET), ValidUntilMin(0), ValidUntilMax(0) {}
  55 };
  56                                                                         /*}}}*/
  57 // ReleaseIndex::MetaIndex* - display helpers                           /*{{{*/
  58 std::string debReleaseIndex::MetaIndexInfo(const char *Type) const
  59 {
  60    std::string Info = ::URI::ArchiveOnly(URI) + ' ';
  61    if (Dist[Dist.size() - 1] == '/')
  62    {
  63       if (Dist != "/")
  64          Info += Dist;
  65    }
  66    else
  67       Info += Dist;
  68    Info += " ";
  69    Info += Type;
  70    return Info;
  71 }
  72 std::string debReleaseIndex::Describe() const
  73 {
  74    return MetaIndexInfo("Release");
  75 }
  76
  77 std::string debReleaseIndex::MetaIndexFile(const char *Type) const
  78 {
  79    return _config->FindDir("Dir::State::lists") +
  80       URItoFileName(MetaIndexURI(Type));
  81 }
  82
  83 std::string debReleaseIndex::MetaIndexURI(const char *Type) const
  84 {
  85    std::string Res;
  86
  87    if (Dist == "/")
  88       Res = URI;
  89    else if (Dist[Dist.size()-1] == '/')
  90       Res = URI + Dist;
  91    else
  92       Res = URI + "dists/" + Dist + "/";
  93
  94    Res += Type;
  95    return Res;
  96 }
  97                                                                         /*}}}*/
  98 // ReleaseIndex Con- and Destructors                                    /*{{{*/
  99 debReleaseIndex::debReleaseIndex(std::string const &URI, std::string const &Dist) :
 100                                         metaIndex(URI, Dist, "deb"), d(new debReleaseIndexPrivate())
 101 {}
 102 debReleaseIndex::debReleaseIndex(std::string const &URI, std::string const &Dist, bool const pTrusted) :
 103                                         metaIndex(URI, Dist, "deb"), d(new debReleaseIndexPrivate())
 104 {
 105    Trusted = pTrusted ? TRI_YES : TRI_NO;
 106 }
 107 debReleaseIndex::~debReleaseIndex() {
 108    if (d != NULL)
 109       delete d;
 110 }
 111                                                                         /*}}}*/
 112 // ReleaseIndex::GetIndexTargets                                        /*{{{*/
 113 static void GetIndexTargetsFor(char const * const Type, std::string const &URI, std::string const &Dist,
 114       std::vector<debReleaseIndexPrivate::debSectionEntry> const &entries,
 115       std::vector<IndexTarget> &IndexTargets)
 116 {
 117    bool const flatArchive = (Dist[Dist.length() - 1] == '/');
 118    std::string baseURI = URI;
 119    if (flatArchive)
 120    {
 121       if (Dist != "/")
 122          baseURI += Dist;
 123    }
 124    else
 125       baseURI += "dists/" + Dist + "/";
 126    std::string const Release = (Dist == "/") ? "" : Dist;
 127    std::string const Site = ::URI::ArchiveOnly(URI);
 128
 129    std::string DefCompressionTypes;
 130    {
 131       std::vector<std::string> types = APT::Configuration::getCompressionTypes();
 132       if (types.empty() == false)
 133       {
 134          std::ostringstream os;
 135          std::copy(types.begin(), types.end()-1, std::ostream_iterator<std::string>(os, " "));
 136          os << *types.rbegin();
 137          DefCompressionTypes = os.str();
 138       }
 139    }
 140    std::string const NativeArch = _config->Find("APT::Architecture");
 141    bool const GzipIndex = _config->FindB("Acquire::GzipIndexes", false);
 142    for (std::vector<debReleaseIndexPrivate::debSectionEntry>::const_iterator E = entries.begin(); E != entries.end(); ++E)
 143    {
 144       for (std::vector<std::string>::const_iterator T = E->Targets.begin(); T != E->Targets.end(); ++T)
 145       {
 146 #define APT_T_CONFIG_STR(X, Y) _config->Find(std::string("Acquire::IndexTargets::") + Type  + "::" + *T + "::" + (X), (Y))
 147 #define APT_T_CONFIG_BOOL(X, Y) _config->FindB(std::string("Acquire::IndexTargets::") + Type  + "::" + *T + "::" + (X), (Y))
 148          std::string const tplMetaKey = APT_T_CONFIG_STR(flatArchive ? "flatMetaKey" : "MetaKey", "");
 149          std::string const tplShortDesc = APT_T_CONFIG_STR("ShortDescription", "");
 150          std::string const tplLongDesc = "$(SITE) " + APT_T_CONFIG_STR(flatArchive ? "flatDescription" : "Description", "");
 151          bool const IsOptional = APT_T_CONFIG_BOOL("Optional", true);
 152          bool const KeepCompressed = APT_T_CONFIG_BOOL("KeepCompressed", GzipIndex);
 153          bool const DefaultEnabled = APT_T_CONFIG_BOOL("DefaultEnabled", true);
 154          bool const UsePDiffs = APT_T_CONFIG_BOOL("PDiffs", E->UsePDiffs);
 155          std::string const UseByHash = APT_T_CONFIG_STR("By-Hash", E->UseByHash);
 156          std::string const CompressionTypes = APT_T_CONFIG_STR("CompressionTypes", DefCompressionTypes);
 157 #undef APT_T_CONFIG_BOOL
 158 #undef APT_T_CONFIG_STR
 159          if (tplMetaKey.empty())
 160             continue;
 161
 162          for (std::vector<std::string>::const_iterator L = E->Languages.begin(); L != E->Languages.end(); ++L)
 163          {
 164             if (*L == "none" && tplMetaKey.find("$(LANGUAGE)") != std::string::npos)
 165                continue;
 166
 167             for (std::vector<std::string>::const_iterator A = E->Architectures.begin(); A != E->Architectures.end(); ++A)
 168             {
 169                // available in templates
 170                std::map<std::string, std::string> Options;
 171                Options.insert(std::make_pair("SITE", Site));
 172                Options.insert(std::make_pair("RELEASE", Release));
 173                if (tplMetaKey.find("$(COMPONENT)") != std::string::npos)
 174                   Options.insert(std::make_pair("COMPONENT", E->Name));
 175                if (tplMetaKey.find("$(LANGUAGE)") != std::string::npos)
 176                   Options.insert(std::make_pair("LANGUAGE", *L));
 177                if (tplMetaKey.find("$(ARCHITECTURE)") != std::string::npos)
 178                   Options.insert(std::make_pair("ARCHITECTURE", *A));
 179                else if (tplMetaKey.find("$(NATIVE_ARCHITECTURE)") != std::string::npos)
 180                   Options.insert(std::make_pair("ARCHITECTURE", NativeArch));
 181                if (tplMetaKey.find("$(NATIVE_ARCHITECTURE)") != std::string::npos)
 182                   Options.insert(std::make_pair("NATIVE_ARCHITECTURE", NativeArch));
 183
 184                std::string MetaKey = tplMetaKey;
 185                std::string ShortDesc = tplShortDesc;
 186                std::string LongDesc = tplLongDesc;
 187                for (std::map<std::string, std::string>::const_iterator O = Options.begin(); O != Options.end(); ++O)
 188                {
 189                   MetaKey = SubstVar(MetaKey, std::string("$(") + O->first + ")", O->second);
 190                   ShortDesc = SubstVar(ShortDesc, std::string("$(") + O->first + ")", O->second);
 191                   LongDesc = SubstVar(LongDesc, std::string("$(") + O->first + ")", O->second);
 192                }
 193
 194                {
 195                   auto const dup = std::find_if(IndexTargets.begin(), IndexTargets.end(), [&](IndexTarget const &IT) {
 196                      return MetaKey == IT.MetaKey && baseURI == IT.Option(IndexTarget::BASE_URI) &&
 197                         E->sourcesEntry == IT.Option(IndexTarget::SOURCESENTRY) && *T == IT.Option(IndexTarget::CREATED_BY);
 198                   });
 199                   if (dup != IndexTargets.end())
 200                   {
 201                      if (tplMetaKey.find("$(ARCHITECTURE)") == std::string::npos)
 202                         break;
 203                      continue;
 204                   }
 205                }
 206
 207                {
 208                   auto const dup = std::find_if(IndexTargets.begin(), IndexTargets.end(), [&](IndexTarget const &IT) {
 209                      return MetaKey == IT.MetaKey && baseURI == IT.Option(IndexTarget::BASE_URI) &&
 210                         E->sourcesEntry == IT.Option(IndexTarget::SOURCESENTRY) && *T != IT.Option(IndexTarget::CREATED_BY);
 211                   });
 212                   if (dup != IndexTargets.end())
 213                   {
 214                      std::string const dupT = dup->Option(IndexTarget::CREATED_BY);
 215                      std::string const dupEntry = dup->Option(IndexTarget::SOURCESENTRY);
 216                      //TRANSLATOR: an identifier like Packages; Releasefile key indicating
 217                      // a file like main/binary-amd64/Packages; another identifier like Contents;
 218                      // filename and linenumber of the sources.list entry currently parsed
 219                      _error->Warning(_("Target %s wants to acquire the same file (%s) as %s from source %s"),
 220                            T->c_str(), MetaKey.c_str(), dupT.c_str(), dupEntry.c_str());
 221                      if (tplMetaKey.find("$(ARCHITECTURE)") == std::string::npos)
 222                         break;
 223                      continue;
 224                   }
 225                }
 226
 227                {
 228                   auto const dup = std::find_if(IndexTargets.begin(), IndexTargets.end(), [&](IndexTarget const &T) {
 229                      return MetaKey == T.MetaKey && baseURI == T.Option(IndexTarget::BASE_URI) &&
 230                         E->sourcesEntry != T.Option(IndexTarget::SOURCESENTRY);
 231                   });
 232                   if (dup != IndexTargets.end())
 233                   {
 234                      std::string const dupEntry = dup->Option(IndexTarget::SOURCESENTRY);
 235                      //TRANSLATOR: an identifier like Packages; Releasefile key indicating
 236                      // a file like main/binary-amd64/Packages; filename and linenumber of
 237                      // two sources.list entries
 238                      _error->Warning(_("Target %s (%s) is configured multiple times in %s and %s"),
 239                            T->c_str(), MetaKey.c_str(), dupEntry.c_str(), E->sourcesEntry.c_str());
 240                      if (tplMetaKey.find("$(ARCHITECTURE)") == std::string::npos)
 241                         break;
 242                      continue;
 243                   }
 244                }
 245
 246                // not available in templates, but in the indextarget
 247                Options.insert(std::make_pair("BASE_URI", baseURI));
 248                Options.insert(std::make_pair("REPO_URI", URI));
 249                Options.insert(std::make_pair("TARGET_OF", Type));
 250                Options.insert(std::make_pair("CREATED_BY", *T));
 251                Options.insert(std::make_pair("PDIFFS", UsePDiffs ? "yes" : "no"));
 252                Options.insert(std::make_pair("BY_HASH", UseByHash));
 253                Options.insert(std::make_pair("DEFAULTENABLED", DefaultEnabled ? "yes" : "no"));
 254                Options.insert(std::make_pair("COMPRESSIONTYPES", CompressionTypes));
 255                Options.insert(std::make_pair("SOURCESENTRY", E->sourcesEntry));
 256
 257                bool IsOpt = IsOptional;
 258                if (IsOpt == false)
 259                {
 260                   auto const arch = Options.find("ARCHITECTURE");
 261                   if (arch != Options.end() && arch->second == "all")
 262                      IsOpt = true;
 263                }
 264
 265                IndexTarget Target(
 266                      MetaKey,
 267                      ShortDesc,
 268                      LongDesc,
 269                      Options.find("BASE_URI")->second + MetaKey,
 270                      IsOpt,
 271                      KeepCompressed,
 272                      Options
 273                      );
 274                IndexTargets.push_back(Target);
 275
 276                if (tplMetaKey.find("$(ARCHITECTURE)") == std::string::npos)
 277                   break;
 278
 279             }
 280
 281             if (tplMetaKey.find("$(LANGUAGE)") == std::string::npos)
 282                break;
 283
 284          }
 285
 286       }
 287    }
 288 }
 289 std::vector<IndexTarget> debReleaseIndex::GetIndexTargets() const
 290 {
 291    std::vector<IndexTarget> IndexTargets;
 292    GetIndexTargetsFor("deb-src", URI, Dist, d->DebSrcEntries, IndexTargets);
 293    GetIndexTargetsFor("deb", URI, Dist, d->DebEntries, IndexTargets);
 294    return IndexTargets;
 295 }
 296                                                                         /*}}}*/
 297 void debReleaseIndex::AddComponent(std::string const &sourcesEntry,     /*{{{*/
 298          bool const isSrc, std::string const &Name,
 299          std::vector<std::string> const &Targets,
 300          std::vector<std::string> const &Architectures,
 301          std::vector<std::string> Languages,
 302          bool const usePDiffs, std::string const &useByHash)
 303 {
 304    if (Languages.empty() == true)
 305       Languages.push_back("none");
 306    debReleaseIndexPrivate::debSectionEntry const entry = {
 307       sourcesEntry, Name, Targets, Architectures, Languages, usePDiffs, useByHash
 308    };
 309    if (isSrc)
 310       d->DebSrcEntries.push_back(entry);
 311    else
 312       d->DebEntries.push_back(entry);
 313 }
 314                                                                         /*}}}*/
 315
 316 bool debReleaseIndex::Load(std::string const &Filename, std::string * const ErrorText)/*{{{*/
 317 {
 318    LoadedSuccessfully = TRI_NO;
 319    FileFd Fd;
 320    if (OpenMaybeClearSignedFile(Filename, Fd) == false)
 321       return false;
 322
 323    pkgTagFile TagFile(&Fd, Fd.Size());
 324    if (Fd.IsOpen() == false || Fd.Failed())
 325    {
 326       if (ErrorText != NULL)
 327          strprintf(*ErrorText, _("Unable to parse Release file %s"),Filename.c_str());
 328       return false;
 329    }
 330
 331    pkgTagSection Section;
 332    const char *Start, *End;
 333    if (TagFile.Step(Section) == false)
 334    {
 335       if (ErrorText != NULL)
 336          strprintf(*ErrorText, _("No sections in Release file %s"), Filename.c_str());
 337       return false;
 338    }
 339    // FIXME: find better tag name
 340    SupportsAcquireByHash = Section.FindB("Acquire-By-Hash", false);
 341
 342    Suite = Section.FindS("Suite");
 343    Codename = Section.FindS("Codename");
 344    {
 345       std::string const archs = Section.FindS("Architectures");
 346       if (archs.empty() == false)
 347          d->Architectures = VectorizeString(archs, ' ');
 348    }
 349
 350    bool FoundHashSum = false;
 351    for (int i=0;HashString::SupportedHashes()[i] != NULL; i++)
 352    {
 353       if (!Section.Find(HashString::SupportedHashes()[i], Start, End))
 354          continue;
 355
 356       std::string Name;
 357       std::string Hash;
 358       unsigned long long Size;
 359       while (Start < End)
 360       {
 361          if (!parseSumData(Start, End, Name, Hash, Size))
 362             return false;
 363
 364          if (Entries.find(Name) == Entries.end())
 365          {
 366             metaIndex::checkSum *Sum = new metaIndex::checkSum;
 367             Sum->MetaKeyFilename = Name;
 368             Sum->Size = Size;
 369             Sum->Hashes.FileSize(Size);
 370             APT_IGNORE_DEPRECATED(Sum->Hash = HashString(HashString::SupportedHashes()[i],Hash);)
 371             Entries[Name] = Sum;
 372          }
 373          Entries[Name]->Hashes.push_back(HashString(HashString::SupportedHashes()[i],Hash));
 374          FoundHashSum = true;
 375       }
 376    }
 377
 378    if(FoundHashSum == false)
 379    {
 380       if (ErrorText != NULL)
 381          strprintf(*ErrorText, _("No Hash entry in Release file %s"), Filename.c_str());
 382       return false;
 383    }
 384
 385    std::string const StrDate = Section.FindS("Date");
 386    if (RFC1123StrToTime(StrDate.c_str(), Date) == false)
 387    {
 388       if (ErrorText != NULL)
 389          strprintf(*ErrorText, _("Invalid 'Date' entry in Release file %s"), Filename.c_str());
 390       return false;
 391    }
 392
 393    bool CheckValidUntil = _config->FindB("Acquire::Check-Valid-Until", true);
 394    if (d->CheckValidUntil == metaIndex::TRI_NO)
 395       CheckValidUntil = false;
 396    else if (d->CheckValidUntil == metaIndex::TRI_YES)
 397       CheckValidUntil = true;
 398
 399    if (CheckValidUntil == true)
 400    {
 401       std::string const Label = Section.FindS("Label");
 402       std::string const StrValidUntil = Section.FindS("Valid-Until");
 403
 404       // if we have a Valid-Until header in the Release file, use it as default
 405       if (StrValidUntil.empty() == false)
 406       {
 407          if(RFC1123StrToTime(StrValidUntil.c_str(), ValidUntil) == false)
 408          {
 409             if (ErrorText != NULL)
 410                strprintf(*ErrorText, _("Invalid 'Valid-Until' entry in Release file %s"), Filename.c_str());
 411             return false;
 412          }
 413       }
 414       // get the user settings for this archive and use what expires earlier
 415       time_t MaxAge = d->ValidUntilMax;
 416       if (MaxAge == 0)
 417       {
 418          MaxAge = _config->FindI("Acquire::Max-ValidTime", 0);
 419          if (Label.empty() == false)
 420             MaxAge = _config->FindI(("Acquire::Max-ValidTime::" + Label).c_str(), MaxAge);
 421       }
 422       time_t MinAge = d->ValidUntilMin;
 423       if (MinAge == 0)
 424       {
 425          MinAge = _config->FindI("Acquire::Min-ValidTime", 0);
 426          if (Label.empty() == false)
 427             MinAge = _config->FindI(("Acquire::Min-ValidTime::" + Label).c_str(), MinAge);
 428       }
 429
 430       if (MinAge != 0 && ValidUntil != 0) {
 431          time_t const min_date = Date + MinAge;
 432          if (ValidUntil < min_date)
 433             ValidUntil = min_date;
 434       }
 435       if (MaxAge != 0) {
 436          time_t const max_date = Date + MaxAge;
 437          if (ValidUntil == 0 || ValidUntil > max_date)
 438             ValidUntil = max_date;
 439       }
 440    }
 441
 442    LoadedSuccessfully = TRI_YES;
 443    return true;
 444 }
 445                                                                         /*}}}*/
 446 metaIndex * debReleaseIndex::UnloadedClone() const                      /*{{{*/
 447 {
 448    if (Trusted == TRI_NO)
 449       return new debReleaseIndex(URI, Dist, false);
 450    else if (Trusted == TRI_YES)
 451       return new debReleaseIndex(URI, Dist, true);
 452    else
 453       return new debReleaseIndex(URI, Dist);
 454 }
 455                                                                         /*}}}*/
 456 bool debReleaseIndex::parseSumData(const char *&Start, const char *End, /*{{{*/
 457                                    std::string &Name, std::string &Hash, unsigned long long &Size)
 458 {
 459    Name = "";
 460    Hash = "";
 461    Size = 0;
 462    /* Skip over the first blank */
 463    while ((*Start == '\t' || *Start == ' ' || *Start == '\n' || *Start == '\r')
 464           && Start < End)
 465       Start++;
 466    if (Start >= End)
 467       return false;
 468
 469    /* Move EntryEnd to the end of the first entry (the hash) */
 470    const char *EntryEnd = Start;
 471    while ((*EntryEnd != '\t' && *EntryEnd != ' ')
 472           && EntryEnd < End)
 473       EntryEnd++;
 474    if (EntryEnd == End)
 475       return false;
 476
 477    Hash.append(Start, EntryEnd-Start);
 478
 479    /* Skip over intermediate blanks */
 480    Start = EntryEnd;
 481    while (*Start == '\t' || *Start == ' ')
 482       Start++;
 483    if (Start >= End)
 484       return false;
 485
 486    EntryEnd = Start;
 487    /* Find the end of the second entry (the size) */
 488    while ((*EntryEnd != '\t' && *EntryEnd != ' ' )
 489           && EntryEnd < End)
 490       EntryEnd++;
 491    if (EntryEnd == End)
 492       return false;
 493
 494    Size = strtoull (Start, NULL, 10);
 495
 496    /* Skip over intermediate blanks */
 497    Start = EntryEnd;
 498    while (*Start == '\t' || *Start == ' ')
 499       Start++;
 500    if (Start >= End)
 501       return false;
 502
 503    EntryEnd = Start;
 504    /* Find the end of the third entry (the filename) */
 505    while ((*EntryEnd != '\t' && *EntryEnd != ' ' &&
 506            *EntryEnd != '\n' && *EntryEnd != '\r')
 507           && EntryEnd < End)
 508       EntryEnd++;
 509
 510    Name.append(Start, EntryEnd-Start);
 511    Start = EntryEnd; //prepare for the next round
 512    return true;
 513 }
 514                                                                         /*}}}*/
 515
 516 bool debReleaseIndex::GetIndexes(pkgAcquire *Owner, bool const &GetAll)/*{{{*/
 517 {
 518    std::vector<IndexTarget> const targets = GetIndexTargets();
 519 #define APT_TARGET(X) IndexTarget("", X, MetaIndexInfo(X), MetaIndexURI(X), false, false, std::map<std::string,std::string>())
 520    pkgAcqMetaClearSig * const TransactionManager = new pkgAcqMetaClearSig(Owner,
 521          APT_TARGET("InRelease"), APT_TARGET("Release"), APT_TARGET("Release.gpg"),
 522          targets, this);
 523 #undef APT_TARGET
 524    // special case for --print-uris
 525    if (GetAll)
 526       for (auto const &Target: targets)
 527          new pkgAcqIndex(Owner, TransactionManager, Target);
 528
 529    return true;
 530 }
 531                                                                         /*}}}*/
 532 // ReleaseIndex::Set* TriState options                                  /*{{{*/
 533 bool debReleaseIndex::SetTrusted(TriState const pTrusted)
 534 {
 535    if (Trusted == TRI_UNSET)
 536       Trusted = pTrusted;
 537    else if (Trusted != pTrusted)
 538       // TRANSLATOR: The first is an option name from sources.list manpage, the other two URI and Suite
 539       return _error->Error(_("Conflicting values set for option %s regarding source %s %s"), "Trusted", URI.c_str(), Dist.c_str());
 540    return true;
 541 }
 542 bool debReleaseIndex::SetCheckValidUntil(TriState const pCheckValidUntil)
 543 {
 544    if (d->CheckValidUntil == TRI_UNSET)
 545       d->CheckValidUntil = pCheckValidUntil;
 546    else if (d->CheckValidUntil != pCheckValidUntil)
 547       return _error->Error(_("Conflicting values set for option %s regarding source %s %s"), "Check-Valid-Until", URI.c_str(), Dist.c_str());
 548    return true;
 549 }
 550 bool debReleaseIndex::SetValidUntilMin(time_t const Valid)
 551 {
 552    if (d->ValidUntilMin == 0)
 553       d->ValidUntilMin = Valid;
 554    else if (d->ValidUntilMin != Valid)
 555       return _error->Error(_("Conflicting values set for option %s regarding source %s %s"), "Min-ValidTime", URI.c_str(), Dist.c_str());
 556    return true;
 557 }
 558 bool debReleaseIndex::SetValidUntilMax(time_t const Valid)
 559 {
 560    if (d->ValidUntilMax == 0)
 561       d->ValidUntilMax = Valid;
 562    else if (d->ValidUntilMax != Valid)
 563       return _error->Error(_("Conflicting values set for option %s regarding source %s %s"), "Max-ValidTime", URI.c_str(), Dist.c_str());
 564    return true;
 565 }
 566 bool debReleaseIndex::SetSignedBy(std::string const &pSignedBy)
 567 {
 568    if (SignedBy.empty() == true && pSignedBy.empty() == false)
 569    {
 570       if (pSignedBy[0] == '/') // no check for existence as we could be chrooting later or such things
 571          ; // absolute path to a keyring file
 572       else
 573       {
 574          // we could go all fancy and allow short/long/string matches as gpgv/apt-key does,
 575          // but fingerprints are harder to fake than the others and this option is set once,
 576          // not interactively all the time so easy to type is not really a concern.
 577          std::string finger = pSignedBy;
 578          finger.erase(std::remove(finger.begin(), finger.end(), ' '), finger.end());
 579          std::transform(finger.begin(), finger.end(), finger.begin(), ::toupper);
 580          if (finger.length() != 40 || finger.find_first_not_of("0123456789ABCDEF") != std::string::npos)
 581             return _error->Error(_("Invalid value set for option %s regarding source %s %s (%s)"), "Signed-By", URI.c_str(), Dist.c_str(), "not a fingerprint");
 582       }
 583       SignedBy = pSignedBy;
 584    }
 585    else if (SignedBy != pSignedBy)
 586       return _error->Error(_("Conflicting values set for option %s regarding source %s %s"), "Signed-By", URI.c_str(), Dist.c_str());
 587    return true;
 588 }
 589                                                                         /*}}}*/
 590 // ReleaseIndex::IsTrusted                                              /*{{{*/
 591 bool debReleaseIndex::IsTrusted() const
 592 {
 593    if (Trusted == TRI_YES)
 594       return true;
 595    else if (Trusted == TRI_NO)
 596       return false;
 597
 598
 599    if(_config->FindB("APT::Authentication::TrustCDROM", false))
 600       if(URI.substr(0,strlen("cdrom:")) == "cdrom:")
 601          return true;
 602
 603    if (FileExists(MetaIndexFile("Release.gpg")))
 604       return true;
 605
 606    return FileExists(MetaIndexFile("InRelease"));
 607 }
 608                                                                         /*}}}*/
 609 bool debReleaseIndex::IsArchitectureSupported(std::string const &arch) const/*{{{*/
 610 {
 611    if (d->Architectures.empty())
 612       return true;
 613    return std::find(d->Architectures.begin(), d->Architectures.end(), arch) != d->Architectures.end();
 614 }
 615                                                                         /*}}}*/
 616 std::vector <pkgIndexFile *> *debReleaseIndex::GetIndexFiles()          /*{{{*/
 617 {
 618    if (Indexes != NULL)
 619       return Indexes;
 620
 621    Indexes = new std::vector<pkgIndexFile*>();
 622    bool const istrusted = IsTrusted();
 623    for (auto const &T: GetIndexTargets())
 624    {
 625       std::string const TargetName = T.Option(IndexTarget::CREATED_BY);
 626       if (TargetName == "Packages")
 627          Indexes->push_back(new debPackagesIndex(T, istrusted));
 628       else if (TargetName == "Sources")
 629          Indexes->push_back(new debSourcesIndex(T, istrusted));
 630       else if (TargetName == "Translations")
 631          Indexes->push_back(new debTranslationsIndex(T));
 632    }
 633    return Indexes;
 634 }
 635                                                                         /*}}}*/
 636
 637 static bool ReleaseFileName(debReleaseIndex const * const That, std::string &ReleaseFile)/*{{{*/
 638 {
 639    ReleaseFile = That->MetaIndexFile("InRelease");
 640    bool releaseExists = false;
 641    if (FileExists(ReleaseFile) == true)
 642       releaseExists = true;
 643    else
 644    {
 645       ReleaseFile = That->MetaIndexFile("Release");
 646       if (FileExists(ReleaseFile))
 647          releaseExists = true;
 648    }
 649    return releaseExists;
 650 }
 651                                                                         /*}}}*/
 652 bool debReleaseIndex::Merge(pkgCacheGenerator &Gen,OpProgress * /*Prog*/) const/*{{{*/
 653 {
 654    std::string ReleaseFile;
 655    bool const releaseExists = ReleaseFileName(this, ReleaseFile);
 656
 657    ::URI Tmp(URI);
 658    if (Gen.SelectReleaseFile(ReleaseFile, Tmp.Host) == false)
 659       return _error->Error("Problem with SelectReleaseFile %s", ReleaseFile.c_str());
 660
 661    if (releaseExists == false)
 662       return true;
 663
 664    FileFd Rel;
 665    // Beware: The 'Release' file might be clearsigned in case the
 666    // signature for an 'InRelease' file couldn't be checked
 667    if (OpenMaybeClearSignedFile(ReleaseFile, Rel) == false)
 668       return false;
 669
 670    // Store the IMS information
 671    pkgCache::RlsFileIterator File = Gen.GetCurRlsFile();
 672    pkgCacheGenerator::Dynamic<pkgCache::RlsFileIterator> DynFile(File);
 673    // Rel can't be used as this is potentially a temporary file
 674    struct stat Buf;
 675    if (stat(ReleaseFile.c_str(), &Buf) != 0)
 676       return _error->Errno("fstat", "Unable to stat file %s", ReleaseFile.c_str());
 677    File->Size = Buf.st_size;
 678    File->mtime = Buf.st_mtime;
 679
 680    pkgTagFile TagFile(&Rel, Rel.Size());
 681    pkgTagSection Section;
 682    if (Rel.IsOpen() == false || Rel.Failed() || TagFile.Step(Section) == false)
 683       return false;
 684
 685    std::string data;
 686    #define APT_INRELEASE(TYPE, TAG, STORE) \
 687    data = Section.FindS(TAG); \
 688    if (data.empty() == false) \
 689    { \
 690       map_stringitem_t const storage = Gen.StoreString(pkgCacheGenerator::TYPE, data); \
 691       if (storage == 0) return false; \
 692       STORE = storage; \
 693    }
 694    APT_INRELEASE(MIXED, "Suite", File->Archive)
 695    APT_INRELEASE(VERSIONNUMBER, "Version", File->Version)
 696    APT_INRELEASE(MIXED, "Origin", File->Origin)
 697    APT_INRELEASE(MIXED, "Codename", File->Codename)
 698    APT_INRELEASE(MIXED, "Label", File->Label)
 699    #undef APT_INRELEASE
 700    Section.FindFlag("NotAutomatic", File->Flags, pkgCache::Flag::NotAutomatic);
 701    Section.FindFlag("ButAutomaticUpgrades", File->Flags, pkgCache::Flag::ButAutomaticUpgrades);
 702
 703    return true;
 704 }
 705                                                                         /*}}}*/
 706 // ReleaseIndex::FindInCache - Find this index                          /*{{{*/
 707 pkgCache::RlsFileIterator debReleaseIndex::FindInCache(pkgCache &Cache, bool const ModifyCheck) const
 708 {
 709    std::string ReleaseFile;
 710    bool const releaseExists = ReleaseFileName(this, ReleaseFile);
 711
 712    pkgCache::RlsFileIterator File = Cache.RlsFileBegin();
 713    for (; File.end() == false; ++File)
 714    {
 715        if (File->FileName == 0 || ReleaseFile != File.FileName())
 716          continue;
 717
 718        // empty means the file does not exist by "design"
 719        if (ModifyCheck == false || (releaseExists == false && File->Size == 0))
 720           return File;
 721
 722       struct stat St;
 723       if (stat(File.FileName(),&St) != 0)
 724       {
 725          if (_config->FindB("Debug::pkgCacheGen", false))
 726             std::clog << "ReleaseIndex::FindInCache - stat failed on " << File.FileName() << std::endl;
 727          return pkgCache::RlsFileIterator(Cache);
 728       }
 729       if ((unsigned)St.st_size != File->Size || St.st_mtime != File->mtime)
 730       {
 731          if (_config->FindB("Debug::pkgCacheGen", false))
 732             std::clog << "ReleaseIndex::FindInCache - size (" << St.st_size << " <> " << File->Size
 733                         << ") or mtime (" << St.st_mtime << " <> " << File->mtime
 734                         << ") doesn't match for " << File.FileName() << std::endl;
 735          return pkgCache::RlsFileIterator(Cache);
 736       }
 737       return File;
 738    }
 739
 740    return File;
 741 }
 742                                                                         /*}}}*/
 743
 744 static std::vector<std::string> parsePlusMinusOptions(std::string const &Name, /*{{{*/
 745       std::map<std::string, std::string> const &Options, std::vector<std::string> const &defaultValues)
 746 {
 747    std::map<std::string, std::string>::const_iterator val = Options.find(Name);
 748    std::vector<std::string> Values;
 749    if (val != Options.end())
 750       Values = VectorizeString(val->second, ',');
 751    else
 752       Values = defaultValues;
 753
 754    // all is a very special architecture users shouldn't be concerned with explicitly
 755    if (Name == "arch" && std::find(Values.begin(), Values.end(), "all") == Values.end())
 756       Values.push_back("all");
 757
 758    if ((val = Options.find(Name + "+")) != Options.end())
 759    {
 760       std::vector<std::string> const plus = VectorizeString(val->second, ',');
 761       std::copy_if(plus.begin(), plus.end(), std::back_inserter(Values), [&Values](std::string const &v) {
 762          return std::find(Values.begin(), Values.end(), v) == Values.end();
 763       });
 764    }
 765    if ((val = Options.find(Name + "-")) != Options.end())
 766    {
 767       std::vector<std::string> const minus = VectorizeString(val->second, ',');
 768       Values.erase(std::remove_if(Values.begin(), Values.end(), [&minus](std::string const &v) {
 769          return std::find(minus.begin(), minus.end(), v) != minus.end();
 770       }), Values.end());
 771    }
 772    return Values;
 773 }
 774                                                                         /*}}}*/
 775 class APT_HIDDEN debSLTypeDebian : public pkgSourceList::Type           /*{{{*/
 776 {
 777    metaIndex::TriState GetTriStateOption(std::map<std::string, std::string>const &Options, char const * const name) const
 778    {
 779       std::map<std::string, std::string>::const_iterator const opt = Options.find(name);
 780       if (opt != Options.end())
 781          return StringToBool(opt->second, false) ? metaIndex::TRI_YES : metaIndex::TRI_NO;
 782       return metaIndex::TRI_DONTCARE;
 783    }
 784
 785    time_t GetTimeOption(std::map<std::string, std::string>const &Options, char const * const name) const
 786    {
 787       std::map<std::string, std::string>::const_iterator const opt = Options.find(name);
 788       if (opt == Options.end())
 789          return 0;
 790       return strtoull(opt->second.c_str(), NULL, 10);
 791    }
 792
 793    protected:
 794
 795    bool CreateItemInternal(std::vector<metaIndex *> &List, std::string const &URI,
 796                            std::string const &Dist, std::string const &Section,
 797                            bool const &IsSrc, std::map<std::string, std::string> const &Options) const
 798    {
 799       debReleaseIndex *Deb = NULL;
 800       for (std::vector<metaIndex *>::const_iterator I = List.begin();
 801            I != List.end(); ++I)
 802       {
 803          // We only worry about debian entries here
 804          if (strcmp((*I)->GetType(), "deb") != 0)
 805             continue;
 806
 807          /* This check insures that there will be only one Release file
 808             queued for all the Packages files and Sources files it
 809             corresponds to. */
 810          if ((*I)->GetURI() == URI && (*I)->GetDist() == Dist)
 811          {
 812             Deb = dynamic_cast<debReleaseIndex*>(*I);
 813             if (Deb != NULL)
 814                break;
 815          }
 816       }
 817
 818       // No currently created Release file indexes this entry, so we create a new one.
 819       if (Deb == NULL)
 820       {
 821          Deb = new debReleaseIndex(URI, Dist);
 822          List.push_back(Deb);
 823       }
 824
 825       std::vector<std::string> const alltargets = _config->FindVector(std::string("Acquire::IndexTargets::") + Name, "", true);
 826       std::vector<std::string> deftargets;
 827       deftargets.reserve(alltargets.size());
 828       std::copy_if(alltargets.begin(), alltargets.end(), std::back_inserter(deftargets), [&](std::string const &t) {
 829          std::string c = "Acquire::IndexTargets::";
 830          c.append(Name).append("::").append(t).append("::DefaultEnabled");
 831          return _config->FindB(c, true);
 832       });
 833       std::vector<std::string> mytargets = parsePlusMinusOptions("target", Options, deftargets);
 834       for (auto const &target : alltargets)
 835       {
 836          std::map<std::string, std::string>::const_iterator const opt = Options.find(target);
 837          if (opt == Options.end())
 838             continue;
 839          auto const tarItr = std::find(mytargets.begin(), mytargets.end(), target);
 840          bool const optValue = StringToBool(opt->second);
 841          if (optValue == true && tarItr == mytargets.end())
 842             mytargets.push_back(target);
 843          else if (optValue == false && tarItr != mytargets.end())
 844             mytargets.erase(std::remove(mytargets.begin(), mytargets.end(), target), mytargets.end());
 845       }
 846
 847       bool UsePDiffs = _config->FindB("Acquire::PDiffs", true);
 848       {
 849          std::map<std::string, std::string>::const_iterator const opt = Options.find("pdiffs");
 850          if (opt != Options.end())
 851             UsePDiffs = StringToBool(opt->second);
 852       }
 853
 854       std::string UseByHash = _config->Find("APT::Acquire::By-Hash", "yes");
 855       UseByHash = _config->Find("Acquire::By-Hash", UseByHash);
 856       {
 857          std::string const host = ::URI(URI).Host;
 858          UseByHash = _config->Find("APT::Acquire::" + host + "::By-Hash", UseByHash);
 859          UseByHash = _config->Find("Acquire::" + host + "::By-Hash", UseByHash);
 860          std::map<std::string, std::string>::const_iterator const opt = Options.find("by-hash");
 861          if (opt != Options.end())
 862             UseByHash = opt->second;
 863       }
 864
 865       auto const entry = Options.find("sourceslist-entry");
 866       Deb->AddComponent(
 867             entry->second,
 868             IsSrc,
 869             Section,
 870             mytargets,
 871             parsePlusMinusOptions("arch", Options, APT::Configuration::getArchitectures()),
 872             parsePlusMinusOptions("lang", Options, APT::Configuration::getLanguages(true)),
 873             UsePDiffs,
 874             UseByHash
 875             );
 876
 877       if (Deb->SetTrusted(GetTriStateOption(Options, "trusted")) == false ||
 878          Deb->SetCheckValidUntil(GetTriStateOption(Options, "check-valid-until")) == false ||
 879          Deb->SetValidUntilMax(GetTimeOption(Options, "valid-until-max")) == false ||
 880          Deb->SetValidUntilMin(GetTimeOption(Options, "valid-until-min")) == false)
 881          return false;
 882
 883       std::map<std::string, std::string>::const_iterator const signedby = Options.find("signed-by");
 884       if (signedby == Options.end())
 885       {
 886          if (Deb->SetSignedBy("") == false)
 887             return false;
 888       }
 889       else
 890       {
 891          if (Deb->SetSignedBy(signedby->second) == false)
 892             return false;
 893       }
 894
 895       return true;
 896    }
 897
 898    debSLTypeDebian(char const * const Name, char const * const Label) : Type(Name, Label)
 899    {
 900    }
 901 };
 902                                                                         /*}}}*/
 903 class APT_HIDDEN debSLTypeDeb : public debSLTypeDebian                  /*{{{*/
 904 {
 905    public:
 906
 907    bool CreateItem(std::vector<metaIndex *> &List, std::string const &URI,
 908                    std::string const &Dist, std::string const &Section,
 909                    std::map<std::string, std::string> const &Options) const APT_OVERRIDE
 910    {
 911       return CreateItemInternal(List, URI, Dist, Section, false, Options);
 912    }
 913
 914    debSLTypeDeb() : debSLTypeDebian("deb", "Debian binary tree")
 915    {
 916    }
 917 };
 918                                                                         /*}}}*/
 919 class APT_HIDDEN debSLTypeDebSrc : public debSLTypeDebian               /*{{{*/
 920 {
 921    public:
 922
 923    bool CreateItem(std::vector<metaIndex *> &List, std::string const &URI,
 924                    std::string const &Dist, std::string const &Section,
 925                    std::map<std::string, std::string> const &Options) const APT_OVERRIDE
 926    {
 927       return CreateItemInternal(List, URI, Dist, Section, true, Options);
 928    }
 929
 930    debSLTypeDebSrc() : debSLTypeDebian("deb-src", "Debian source tree")
 931    {
 932    }
 933 };
 934                                                                         /*}}}*/
 935
 936 APT_HIDDEN debSLTypeDeb _apt_DebType;
 937 APT_HIDDEN debSLTypeDebSrc _apt_DebSrcType;