apt-pkg/indexfile.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: indexfile.cc,v 1.2.2.1 2003/12/24 23:09:17 mdz Exp $
   4 /* ######################################################################
   5
   6    Index File - Abstraction for an index of archive/souce file.
   7
   8    ##################################################################### */
   9                                                                         /*}}}*/
  10 // Include Files                                                        /*{{{*/
  11 #include<config.h>
  12
  13 #include <apt-pkg/configuration.h>
  14 #include <apt-pkg/indexfile.h>
  15 #include <apt-pkg/error.h>
  16 #include <apt-pkg/fileutl.h>
  17 #include <apt-pkg/aptconfiguration.h>
  18 #include <apt-pkg/pkgcache.h>
  19 #include <apt-pkg/pkgcachegen.h>
  20 #include <apt-pkg/cacheiterators.h>
  21 #include <apt-pkg/srcrecords.h>
  22 #include <apt-pkg/strutl.h>
  23 #include <apt-pkg/progress.h>
  24 #include <apt-pkg/deblistparser.h>
  25 #include <apt-pkg/macros.h>
  26
  27 #include <apt-pkg/debindexfile.h>
  28
  29 #include <sys/stat.h>
  30
  31 #include <string>
  32 #include <vector>
  33 #include <clocale>
  34 #include <cstring>
  35 #include <memory>
  36                                                                         /*}}}*/
  37
  38 // Global list of Item supported
  39 static  pkgIndexFile::Type *ItmList[10];
  40 pkgIndexFile::Type **pkgIndexFile::Type::GlobalList = ItmList;
  41 unsigned long pkgIndexFile::Type::GlobalListLen = 0;
  42
  43 // Type::Type - Constructor                                             /*{{{*/
  44 // ---------------------------------------------------------------------
  45 /* */
  46 pkgIndexFile::Type::Type()
  47 {
  48    ItmList[GlobalListLen] = this;
  49    GlobalListLen++;
  50    Label = NULL;
  51 }
  52                                                                         /*}}}*/
  53 // Type::GetType - Locate the type by name                              /*{{{*/
  54 // ---------------------------------------------------------------------
  55 /* */
  56 pkgIndexFile::Type *pkgIndexFile::Type::GetType(const char *Type)
  57 {
  58    for (unsigned I = 0; I != GlobalListLen; I++)
  59       if (strcmp(GlobalList[I]->Label,Type) == 0)
  60          return GlobalList[I];
  61    return 0;
  62 }
  63                                                                         /*}}}*/
  64 pkgIndexFile::pkgIndexFile(bool const Trusted) :                        /*{{{*/
  65    d(NULL), Trusted(Trusted)
  66 {
  67 }
  68                                                                         /*}}}*/
  69 // IndexFile::ArchiveInfo - Stub                                        /*{{{*/
  70 std::string pkgIndexFile::ArchiveInfo(pkgCache::VerIterator const &Ver) const
  71 {
  72    debDebPkgFileIndex const * const debfile = dynamic_cast<debDebPkgFileIndex const*>(this);
  73    if (debfile != nullptr)
  74       return debfile->ArchiveInfo_impl(Ver);
  75    return std::string();
  76 }
  77                                                                         /*}}}*/
  78 // IndexFile::FindInCache - Stub                                        /*{{{*/
  79 pkgCache::PkgFileIterator pkgIndexFile::FindInCache(pkgCache &Cache) const
  80 {
  81    return pkgCache::PkgFileIterator(Cache);
  82 }
  83                                                                         /*}}}*/
  84 // IndexFile::SourceIndex - Stub                                        /*{{{*/
  85 std::string pkgIndexFile::SourceInfo(pkgSrcRecords::Parser const &/*Record*/,
  86                                 pkgSrcRecords::File const &/*File*/) const
  87 {
  88    return std::string();
  89 }
  90                                                                         /*}}}*/
  91 // IndexFile::TranslationsAvailable - Check if will use Translation     /*{{{*/
  92 bool pkgIndexFile::TranslationsAvailable() {
  93         return (APT::Configuration::getLanguages().empty() != true);
  94 }
  95                                                                         /*}}}*/
  96 // IndexFile::CheckLanguageCode - Check the Language Code               /*{{{*/
  97 bool pkgIndexFile::CheckLanguageCode(const char * const Lang)
  98 {
  99   if (strlen(Lang) == 2 || (strlen(Lang) == 5 && Lang[2] == '_'))
 100     return true;
 101
 102   if (strcmp(Lang,"C") != 0)
 103     _error->Warning("Wrong language code %s", Lang);
 104
 105   return false;
 106 }
 107                                                                         /*}}}*/
 108 // IndexFile::LanguageCode - Return the Language Code                   /*{{{*/
 109 std::string pkgIndexFile::LanguageCode() {
 110 APT_IGNORE_DEPRECATED_PUSH
 111         if (TranslationsAvailable() == false)
 112                 return "";
 113         return APT::Configuration::getLanguages()[0];
 114 APT_IGNORE_DEPRECATED_POP
 115 }
 116                                                                         /*}}}*/
 117
 118 // IndexTarget - Constructor                                            /*{{{*/
 119 IndexTarget::IndexTarget(std::string const &MetaKey, std::string const &ShortDesc,
 120       std::string const &LongDesc, std::string const &URI, bool const IsOptional,
 121       bool const KeepCompressed, std::map<std::string, std::string> const &Options) :
 122    URI(URI), Description(LongDesc), ShortDesc(ShortDesc), MetaKey(MetaKey),
 123    IsOptional(IsOptional), KeepCompressed(KeepCompressed), Options(Options)
 124 {
 125 }
 126                                                                         /*}}}*/
 127 std::string IndexTarget::Option(OptionKeys const EnumKey) const         /*{{{*/
 128 {
 129    std::string Key;
 130    switch (EnumKey)
 131    {
 132 #define APT_CASE(X) case X: Key = #X; break
 133       APT_CASE(SITE);
 134       APT_CASE(RELEASE);
 135       APT_CASE(COMPONENT);
 136       APT_CASE(LANGUAGE);
 137       APT_CASE(ARCHITECTURE);
 138       APT_CASE(BASE_URI);
 139       APT_CASE(REPO_URI);
 140       APT_CASE(IDENTIFIER);
 141       APT_CASE(TARGET_OF);
 142       APT_CASE(CREATED_BY);
 143       APT_CASE(FALLBACK_OF);
 144       APT_CASE(PDIFFS);
 145       APT_CASE(DEFAULTENABLED);
 146       APT_CASE(COMPRESSIONTYPES);
 147       APT_CASE(SOURCESENTRY);
 148       APT_CASE(BY_HASH);
 149       APT_CASE(KEEPCOMPRESSEDAS);
 150       APT_CASE(ALLOW_INSECURE);
 151       APT_CASE(ALLOW_WEAK);
 152       APT_CASE(ALLOW_DOWNGRADE_TO_INSECURE);
 153 #undef APT_CASE
 154       case FILENAME: return _config->FindDir("Dir::State::lists") + URItoFileName(URI);
 155       case EXISTING_FILENAME:
 156          std::string const filename = Option(FILENAME);
 157          std::vector<std::string> const types = VectorizeString(Option(COMPRESSIONTYPES), ' ');
 158          for (std::vector<std::string>::const_iterator t = types.begin(); t != types.end(); ++t)
 159          {
 160             if (t->empty())
 161                continue;
 162             std::string const file = (*t == "uncompressed") ? filename : (filename + "." + *t);
 163             if (FileExists(file))
 164                return file;
 165          }
 166          return "";
 167    }
 168    std::map<std::string,std::string>::const_iterator const M = Options.find(Key);
 169    if (M == Options.end())
 170       return "";
 171    return M->second;
 172 }
 173                                                                         /*}}}*/
 174 bool IndexTarget::OptionBool(OptionKeys const EnumKey) const            /*{{{*/
 175 {
 176    return StringToBool(Option(EnumKey), false);
 177 }
 178                                                                         /*}}}*/
 179 std::string IndexTarget::Format(std::string format) const               /*{{{*/
 180 {
 181    for (std::map<std::string, std::string>::const_iterator O = Options.begin(); O != Options.end(); ++O)
 182    {
 183       format = SubstVar(format, std::string("$(") + O->first + ")", O->second);
 184    }
 185    format = SubstVar(format, "$(METAKEY)", MetaKey);
 186    format = SubstVar(format, "$(SHORTDESC)", ShortDesc);
 187    format = SubstVar(format, "$(DESCRIPTION)", Description);
 188    format = SubstVar(format, "$(URI)", URI);
 189    format = SubstVar(format, "$(FILENAME)", Option(IndexTarget::FILENAME));
 190    return format;
 191 }
 192                                                                         /*}}}*/
 193
 194 pkgDebianIndexTargetFile::pkgDebianIndexTargetFile(IndexTarget const &Target, bool const Trusted) :/*{{{*/
 195    pkgDebianIndexFile(Trusted), d(NULL), Target(Target)
 196 {
 197 }
 198                                                                         /*}}}*/
 199 std::string pkgDebianIndexTargetFile::ArchiveURI(std::string const &File) const/*{{{*/
 200 {
 201    return Target.Option(IndexTarget::REPO_URI) + File;
 202 }
 203                                                                         /*}}}*/
 204 std::string pkgDebianIndexTargetFile::Describe(bool const Short) const  /*{{{*/
 205 {
 206    if (Short)
 207       return Target.Description;
 208    return Target.Description + " (" + IndexFileName() + ")";
 209 }
 210                                                                         /*}}}*/
 211 std::string pkgDebianIndexTargetFile::IndexFileName() const                     /*{{{*/
 212 {
 213    std::string const s = Target.Option(IndexTarget::FILENAME);
 214    if (FileExists(s))
 215       return s;
 216
 217    std::vector<std::string> const types = VectorizeString(Target.Option(IndexTarget::COMPRESSIONTYPES), ' ');
 218    for (std::vector<std::string>::const_iterator t = types.begin(); t != types.end(); ++t)
 219    {
 220       std::string p = s + '.' + *t;
 221       if (FileExists(p))
 222          return p;
 223    }
 224    return s;
 225 }
 226                                                                         /*}}}*/
 227 unsigned long pkgDebianIndexTargetFile::Size() const                            /*{{{*/
 228 {
 229    unsigned long size = 0;
 230
 231    /* we need to ignore errors here; if the lists are absent, just return 0 */
 232    _error->PushToStack();
 233
 234    FileFd f(IndexFileName(), FileFd::ReadOnly, FileFd::Extension);
 235    if (!f.Failed())
 236       size = f.Size();
 237
 238    if (_error->PendingError() == true)
 239        size = 0;
 240    _error->RevertToStack();
 241
 242    return size;
 243 }
 244                                                                         /*}}}*/
 245 bool pkgDebianIndexTargetFile::Exists() const                                   /*{{{*/
 246 {
 247    return FileExists(IndexFileName());
 248 }
 249                                                                         /*}}}*/
 250 std::string pkgDebianIndexTargetFile::GetArchitecture() const                   /*{{{*/
 251 {
 252    return Target.Option(IndexTarget::ARCHITECTURE);
 253 }
 254                                                                         /*}}}*/
 255 std::string pkgDebianIndexTargetFile::GetComponent() const                      /*{{{*/
 256 {
 257    return Target.Option(IndexTarget::COMPONENT);
 258 }
 259                                                                         /*}}}*/
 260 bool pkgDebianIndexTargetFile::OpenListFile(FileFd &Pkg, std::string const &FileName)/*{{{*/
 261 {
 262    if (Pkg.Open(FileName, FileFd::ReadOnly, FileFd::Extension) == false)
 263       return _error->Error("Problem opening %s",FileName.c_str());
 264    return true;
 265 }
 266                                                                         /*}}}*/
 267 std::string pkgDebianIndexTargetFile::GetProgressDescription() const
 268 {
 269    return Target.Description;
 270 }
 271
 272 pkgDebianIndexRealFile::pkgDebianIndexRealFile(std::string const &pFile, bool const Trusted) :/*{{{*/
 273    pkgDebianIndexFile(Trusted), d(NULL)
 274 {
 275    if (pFile.empty())
 276       ;
 277    else if (pFile == "/nonexistent/stdin")
 278       File = pFile;
 279    else
 280       File = flAbsPath(pFile);
 281 }
 282                                                                         /*}}}*/
 283 // IndexRealFile::Size - Return the size of the index                   /*{{{*/
 284 unsigned long pkgDebianIndexRealFile::Size() const
 285 {
 286    struct stat S;
 287    if (stat(File.c_str(),&S) != 0)
 288       return 0;
 289    return S.st_size;
 290 }
 291                                                                         /*}}}*/
 292 bool pkgDebianIndexRealFile::Exists() const                                     /*{{{*/
 293 {
 294    return FileExists(File);
 295 }
 296                                                                         /*}}}*/
 297 std::string pkgDebianIndexRealFile::Describe(bool const /*Short*/) const/*{{{*/
 298 {
 299    return File;
 300 }
 301                                                                         /*}}}*/
 302 std::string pkgDebianIndexRealFile::ArchiveURI(std::string const &/*File*/) const/*{{{*/
 303 {
 304    return "file:" + File;
 305 }
 306                                                                         /*}}}*/
 307 std::string pkgDebianIndexRealFile::IndexFileName() const                       /*{{{*/
 308 {
 309    return File;
 310 }
 311                                                                         /*}}}*/
 312 std::string pkgDebianIndexRealFile::GetProgressDescription() const
 313 {
 314    return File;
 315 }
 316 bool pkgDebianIndexRealFile::OpenListFile(FileFd &Pkg, std::string const &FileName)/*{{{*/
 317 {
 318    if (Pkg.Open(FileName, FileFd::ReadOnly, FileFd::Extension) == false)
 319       return _error->Error("Problem opening %s",FileName.c_str());
 320    return true;
 321 }
 322                                                                         /*}}}*/
 323
 324 pkgDebianIndexFile::pkgDebianIndexFile(bool const Trusted) : pkgIndexFile(Trusted)
 325 {
 326 }
 327 pkgDebianIndexFile::~pkgDebianIndexFile()
 328 {
 329 }
 330 pkgCacheListParser * pkgDebianIndexFile::CreateListParser(FileFd &Pkg)
 331 {
 332    if (Pkg.IsOpen() == false)
 333       return nullptr;
 334    _error->PushToStack();
 335    pkgCacheListParser * const Parser = new debListParser(&Pkg);
 336    bool const newError = _error->PendingError();
 337    _error->MergeWithStack();
 338    if (newError)
 339    {
 340       delete Parser;
 341       return nullptr;
 342    }
 343    else
 344       return Parser;
 345 }
 346 bool pkgDebianIndexFile::Merge(pkgCacheGenerator &Gen,OpProgress * const Prog)
 347 {
 348    std::string const PackageFile = IndexFileName();
 349    FileFd Pkg;
 350    if (OpenListFile(Pkg, PackageFile) == false)
 351       return false;
 352    _error->PushToStack();
 353    std::unique_ptr<pkgCacheListParser> Parser(CreateListParser(Pkg));
 354    bool const newError = _error->PendingError();
 355    _error->MergeWithStack();
 356    if (newError == false && Parser == nullptr)
 357       return true;
 358    if (Parser == NULL)
 359       return false;
 360
 361    if (Prog != NULL)
 362       Prog->SubProgress(0, GetProgressDescription());
 363
 364    if (Gen.SelectFile(PackageFile, *this, GetArchitecture(), GetComponent(), GetIndexFlags()) == false)
 365       return _error->Error("Problem with SelectFile %s",PackageFile.c_str());
 366
 367    // Store the IMS information
 368    pkgCache::PkgFileIterator File = Gen.GetCurFile();
 369    pkgCacheGenerator::Dynamic<pkgCache::PkgFileIterator> DynFile(File);
 370    File->Size = Pkg.FileSize();
 371    File->mtime = Pkg.ModificationTime();
 372
 373    if (Gen.MergeList(*Parser) == false)
 374       return _error->Error("Problem with MergeList %s",PackageFile.c_str());
 375    return true;
 376 }
 377 pkgCache::PkgFileIterator pkgDebianIndexFile::FindInCache(pkgCache &Cache) const
 378 {
 379    std::string const FileName = IndexFileName();
 380    pkgCache::PkgFileIterator File = Cache.FileBegin();
 381    for (; File.end() == false; ++File)
 382    {
 383        if (File.FileName() == NULL || FileName != File.FileName())
 384          continue;
 385
 386       struct stat St;
 387       if (stat(File.FileName(),&St) != 0)
 388       {
 389          if (_config->FindB("Debug::pkgCacheGen", false))
 390             std::clog << "DebianIndexFile::FindInCache - stat failed on " << File.FileName() << std::endl;
 391          return pkgCache::PkgFileIterator(Cache);
 392       }
 393       if ((map_filesize_t)St.st_size != File->Size || St.st_mtime != File->mtime)
 394       {
 395          if (_config->FindB("Debug::pkgCacheGen", false))
 396             std::clog << "DebianIndexFile::FindInCache - size (" << St.st_size << " <> " << File->Size
 397                         << ") or mtime (" << St.st_mtime << " <> " << File->mtime
 398                         << ") doesn't match for " << File.FileName() << std::endl;
 399          return pkgCache::PkgFileIterator(Cache);
 400       }
 401       return File;
 402    }
 403
 404    return File;
 405 }
 406
 407 APT_CONST pkgIndexFile::~pkgIndexFile() {}
 408 APT_CONST pkgDebianIndexTargetFile::~pkgDebianIndexTargetFile() {}
 409 APT_CONST pkgDebianIndexRealFile::~pkgDebianIndexRealFile() {}