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/progress.h>
  23 #include <apt-pkg/macros.h>
  24
  25 #include <apt-pkg/deblistparser.h>
  26
  27 #include <sys/types.h>
  28 #include <sys/stat.h>
  29 #include <unistd.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    return std::string();
  73 }
  74                                                                         /*}}}*/
  75 // IndexFile::FindInCache - Stub                                        /*{{{*/
  76 pkgCache::PkgFileIterator pkgIndexFile::FindInCache(pkgCache &Cache) const
  77 {
  78    return pkgCache::PkgFileIterator(Cache);
  79 }
  80                                                                         /*}}}*/
  81 // IndexFile::SourceIndex - Stub                                        /*{{{*/
  82 std::string pkgIndexFile::SourceInfo(pkgSrcRecords::Parser const &/*Record*/,
  83                                 pkgSrcRecords::File const &/*File*/) const
  84 {
  85    return std::string();
  86 }
  87                                                                         /*}}}*/
  88 // IndexFile::TranslationsAvailable - Check if will use Translation     /*{{{*/
  89 // ---------------------------------------------------------------------
  90 /* */
  91 bool pkgIndexFile::TranslationsAvailable() {
  92         return (APT::Configuration::getLanguages().empty() != true);
  93 }
  94                                                                         /*}}}*/
  95 // IndexFile::CheckLanguageCode - Check the Language Code               /*{{{*/
  96 // ---------------------------------------------------------------------
  97 /* No intern need for this method anymore as the check for correctness
  98    is already done in getLanguages(). Note also that this check is
  99    rather bad (doesn't take three character like ast into account).
 100    TODO: Remove method with next API break */
 101 APT_DEPRECATED bool pkgIndexFile::CheckLanguageCode(const char * const Lang)
 102 {
 103   if (strlen(Lang) == 2 || (strlen(Lang) == 5 && Lang[2] == '_'))
 104     return true;
 105
 106   if (strcmp(Lang,"C") != 0)
 107     _error->Warning("Wrong language code %s", Lang);
 108
 109   return false;
 110 }
 111                                                                         /*}}}*/
 112 // IndexFile::LanguageCode - Return the Language Code                   /*{{{*/
 113 // ---------------------------------------------------------------------
 114 /* As we have now possibly more than one LanguageCode this method is
 115    supersided by a) private classmembers or b) getLanguages().
 116    TODO: Remove method with next API break */
 117 APT_DEPRECATED std::string pkgIndexFile::LanguageCode() {
 118         if (TranslationsAvailable() == false)
 119                 return "";
 120         return APT::Configuration::getLanguages()[0];
 121 }
 122                                                                         /*}}}*/
 123
 124 // IndexTarget - Constructor                                            /*{{{*/
 125 IndexTarget::IndexTarget(std::string const &MetaKey, std::string const &ShortDesc,
 126       std::string const &LongDesc, std::string const &URI, bool const IsOptional,
 127       bool const KeepCompressed, std::map<std::string, std::string> const &Options) :
 128    URI(URI), Description(LongDesc), ShortDesc(ShortDesc), MetaKey(MetaKey),
 129    IsOptional(IsOptional), KeepCompressed(KeepCompressed), Options(Options)
 130 {
 131 }
 132                                                                         /*}}}*/
 133 std::string IndexTarget::Option(OptionKeys const EnumKey) const         /*{{{*/
 134 {
 135    std::string Key;
 136    switch (EnumKey)
 137    {
 138 #define APT_CASE(X) case X: Key = #X; break
 139       APT_CASE(SITE);
 140       APT_CASE(RELEASE);
 141       APT_CASE(COMPONENT);
 142       APT_CASE(LANGUAGE);
 143       APT_CASE(ARCHITECTURE);
 144       APT_CASE(BASE_URI);
 145       APT_CASE(REPO_URI);
 146       APT_CASE(TARGET_OF);
 147       APT_CASE(CREATED_BY);
 148 #undef APT_CASE
 149       case FILENAME: return _config->FindDir("Dir::State::lists") + URItoFileName(URI);
 150       case EXISTING_FILENAME:
 151          std::string const filename = Option(FILENAME);
 152          std::vector<std::string> const types = APT::Configuration::getCompressionTypes();
 153          for (std::vector<std::string>::const_iterator t = types.begin(); t != types.end(); ++t)
 154          {
 155             if (t->empty())
 156                continue;
 157             std::string const file = (*t == "uncompressed") ? filename : (filename + "." + *t);
 158             if (FileExists(file))
 159                return file;
 160          }
 161          return "";
 162    }
 163    std::map<std::string,std::string>::const_iterator const M = Options.find(Key);
 164    if (M == Options.end())
 165       return "";
 166    return M->second;
 167 }
 168                                                                         /*}}}*/
 169 std::string IndexTarget::Format(std::string format) const               /*{{{*/
 170 {
 171    for (std::map<std::string, std::string>::const_iterator O = Options.begin(); O != Options.end(); ++O)
 172    {
 173       format = SubstVar(format, std::string("$(") + O->first + ")", O->second);
 174    }
 175    format = SubstVar(format, "$(METAKEY)", MetaKey);
 176    format = SubstVar(format, "$(SHORTDESC)", ShortDesc);
 177    format = SubstVar(format, "$(DESCRIPTION)", Description);
 178    format = SubstVar(format, "$(URI)", URI);
 179    format = SubstVar(format, "$(FILENAME)", Option(IndexTarget::FILENAME));
 180    return format;
 181 }
 182                                                                         /*}}}*/
 183
 184 pkgDebianIndexTargetFile::pkgDebianIndexTargetFile(IndexTarget const &Target, bool const Trusted) :/*{{{*/
 185    pkgDebianIndexFile(Trusted), d(NULL), Target(Target)
 186 {
 187 }
 188                                                                         /*}}}*/
 189 std::string pkgDebianIndexTargetFile::ArchiveURI(std::string const &File) const/*{{{*/
 190 {
 191    return Target.Option(IndexTarget::REPO_URI) + File;
 192 }
 193                                                                         /*}}}*/
 194 std::string pkgDebianIndexTargetFile::Describe(bool const Short) const  /*{{{*/
 195 {
 196    if (Short)
 197       return Target.Description;
 198    return Target.Description + " (" + IndexFileName() + ")";
 199 }
 200                                                                         /*}}}*/
 201 std::string pkgDebianIndexTargetFile::IndexFileName() const                     /*{{{*/
 202 {
 203    std::string const s = Target.Option(IndexTarget::FILENAME);
 204    if (FileExists(s))
 205       return s;
 206
 207    std::vector<std::string> types = APT::Configuration::getCompressionTypes();
 208    for (std::vector<std::string>::const_iterator t = types.begin(); t != types.end(); ++t)
 209    {
 210       std::string p = s + '.' + *t;
 211       if (FileExists(p))
 212          return p;
 213    }
 214    return s;
 215 }
 216                                                                         /*}}}*/
 217 unsigned long pkgDebianIndexTargetFile::Size() const                            /*{{{*/
 218 {
 219    unsigned long size = 0;
 220
 221    /* we need to ignore errors here; if the lists are absent, just return 0 */
 222    _error->PushToStack();
 223
 224    FileFd f(IndexFileName(), FileFd::ReadOnly, FileFd::Extension);
 225    if (!f.Failed())
 226       size = f.Size();
 227
 228    if (_error->PendingError() == true)
 229        size = 0;
 230    _error->RevertToStack();
 231
 232    return size;
 233 }
 234                                                                         /*}}}*/
 235 bool pkgDebianIndexTargetFile::Exists() const                                   /*{{{*/
 236 {
 237    return FileExists(IndexFileName());
 238 }
 239                                                                         /*}}}*/
 240 std::string pkgDebianIndexTargetFile::GetArchitecture() const                   /*{{{*/
 241 {
 242    return Target.Option(IndexTarget::ARCHITECTURE);
 243 }
 244                                                                         /*}}}*/
 245 std::string pkgDebianIndexTargetFile::GetComponent() const                      /*{{{*/
 246 {
 247    return Target.Option(IndexTarget::COMPONENT);
 248 }
 249                                                                         /*}}}*/
 250 bool pkgDebianIndexTargetFile::OpenListFile(FileFd &Pkg, std::string const &FileName)/*{{{*/
 251 {
 252    if (Pkg.Open(FileName, FileFd::ReadOnly, FileFd::Extension) == false)
 253       return _error->Error("Problem opening %s",FileName.c_str());
 254    return true;
 255 }
 256                                                                         /*}}}*/
 257 std::string pkgDebianIndexTargetFile::GetProgressDescription() const
 258 {
 259    return Target.Description;
 260 }
 261
 262 pkgDebianIndexRealFile::pkgDebianIndexRealFile(std::string const &File, bool const Trusted) :/*{{{*/
 263    pkgDebianIndexFile(Trusted), d(NULL), File(flAbsPath(File))
 264 {
 265 }
 266                                                                         /*}}}*/
 267 // IndexRealFile::Size - Return the size of the index                   /*{{{*/
 268 unsigned long pkgDebianIndexRealFile::Size() const
 269 {
 270    struct stat S;
 271    if (stat(File.c_str(),&S) != 0)
 272       return 0;
 273    return S.st_size;
 274 }
 275                                                                         /*}}}*/
 276 bool pkgDebianIndexRealFile::Exists() const                                     /*{{{*/
 277 {
 278    return FileExists(File);
 279 }
 280                                                                         /*}}}*/
 281 std::string pkgDebianIndexRealFile::Describe(bool const /*Short*/) const/*{{{*/
 282 {
 283    return File;
 284 }
 285                                                                         /*}}}*/
 286 std::string pkgDebianIndexRealFile::ArchiveURI(std::string const &/*File*/) const/*{{{*/
 287 {
 288    return "file:" + File;
 289 }
 290                                                                         /*}}}*/
 291 std::string pkgDebianIndexRealFile::IndexFileName() const                       /*{{{*/
 292 {
 293    return File;
 294 }
 295                                                                         /*}}}*/
 296 std::string pkgDebianIndexRealFile::GetProgressDescription() const
 297 {
 298    return File;
 299 }
 300 bool pkgDebianIndexRealFile::OpenListFile(FileFd &Pkg, std::string const &FileName)/*{{{*/
 301 {
 302    if (Pkg.Open(FileName, FileFd::ReadOnly, FileFd::None) == false)
 303       return _error->Error("Problem opening %s",FileName.c_str());
 304    return true;
 305 }
 306                                                                         /*}}}*/
 307
 308 pkgDebianIndexFile::pkgDebianIndexFile(bool const Trusted) : pkgIndexFile(Trusted)
 309 {
 310 }
 311 pkgDebianIndexFile::~pkgDebianIndexFile()
 312 {
 313 }
 314 pkgCacheListParser * pkgDebianIndexFile::CreateListParser(FileFd &Pkg)
 315 {
 316    if (Pkg.IsOpen() == false)
 317       return NULL;
 318    _error->PushToStack();
 319    pkgCacheListParser * const Parser = new debListParser(&Pkg);
 320    bool const newError = _error->PendingError();
 321    _error->MergeWithStack();
 322    return newError ? NULL : Parser;
 323 }
 324 bool pkgDebianIndexFile::Merge(pkgCacheGenerator &Gen,OpProgress * const Prog)
 325 {
 326    std::string const PackageFile = IndexFileName();
 327    FileFd Pkg;
 328    if (OpenListFile(Pkg, PackageFile) == false)
 329       return false;
 330    _error->PushToStack();
 331    std::unique_ptr<pkgCacheListParser> Parser(CreateListParser(Pkg));
 332    bool const newError = _error->PendingError();
 333    if (newError == false && Parser == nullptr)
 334       return true;
 335    if (Parser == NULL)
 336       return false;
 337
 338    if (Prog != NULL)
 339       Prog->SubProgress(0, GetProgressDescription());
 340
 341    if (Gen.SelectFile(PackageFile, *this, GetArchitecture(), GetComponent(), GetIndexFlags()) == false)
 342       return _error->Error("Problem with SelectFile %s",PackageFile.c_str());
 343
 344    // Store the IMS information
 345    pkgCache::PkgFileIterator File = Gen.GetCurFile();
 346    pkgCacheGenerator::Dynamic<pkgCache::PkgFileIterator> DynFile(File);
 347    File->Size = Pkg.FileSize();
 348    File->mtime = Pkg.ModificationTime();
 349
 350    if (Gen.MergeList(*Parser) == false)
 351       return _error->Error("Problem with MergeList %s",PackageFile.c_str());
 352    return true;
 353 }
 354 pkgCache::PkgFileIterator pkgDebianIndexFile::FindInCache(pkgCache &Cache) const
 355 {
 356    std::string const FileName = IndexFileName();
 357    pkgCache::PkgFileIterator File = Cache.FileBegin();
 358    for (; File.end() == false; ++File)
 359    {
 360        if (File.FileName() == NULL || FileName != File.FileName())
 361          continue;
 362
 363       struct stat St;
 364       if (stat(File.FileName(),&St) != 0)
 365       {
 366          if (_config->FindB("Debug::pkgCacheGen", false))
 367             std::clog << "DebianIndexFile::FindInCache - stat failed on " << File.FileName() << std::endl;
 368          return pkgCache::PkgFileIterator(Cache);
 369       }
 370       if ((map_filesize_t)St.st_size != File->Size || St.st_mtime != File->mtime)
 371       {
 372          if (_config->FindB("Debug::pkgCacheGen", false))
 373             std::clog << "DebianIndexFile::FindInCache - size (" << St.st_size << " <> " << File->Size
 374                         << ") or mtime (" << St.st_mtime << " <> " << File->mtime
 375                         << ") doesn't match for " << File.FileName() << std::endl;
 376          return pkgCache::PkgFileIterator(Cache);
 377       }
 378       return File;
 379    }
 380
 381    return File;
 382 }
 383
 384 APT_CONST pkgIndexFile::~pkgIndexFile() {}
 385 APT_CONST pkgDebianIndexTargetFile::~pkgDebianIndexTargetFile() {}
 386 APT_CONST pkgDebianIndexRealFile::~pkgDebianIndexRealFile() {}