apt-pkg/indexcopy.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: indexcopy.cc,v 1.10 2002/03/26 07:38:58 jgg Exp $
   4 /* ######################################################################
   5
   6    Index Copying - Aid for copying and verifying the index files
   7
   8    This class helps apt-cache reconstruct a damaged index files.
   9
  10    ##################################################################### */
  11                                                                         /*}}}*/
  12 // Include Files                                                        /*{{{*/
  13 #include<config.h>
  14
  15 #include <apt-pkg/error.h>
  16 #include <apt-pkg/progress.h>
  17 #include <apt-pkg/strutl.h>
  18 #include <apt-pkg/fileutl.h>
  19 #include <apt-pkg/aptconfiguration.h>
  20 #include <apt-pkg/configuration.h>
  21 #include <apt-pkg/tagfile.h>
  22 #include <apt-pkg/indexrecords.h>
  23 #include <apt-pkg/md5.h>
  24 #include <apt-pkg/cdrom.h>
  25
  26 #include <iostream>
  27 #include <sstream>
  28 #include <unistd.h>
  29 #include <sys/stat.h>
  30 #include <sys/types.h>
  31 #include <fcntl.h>
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34
  35 #include "indexcopy.h"
  36 #include <apti18n.h>
  37                                                                         /*}}}*/
  38
  39 using namespace std;
  40
  41 // IndexCopy::CopyPackages - Copy the package files from the CD         /*{{{*/
  42 // ---------------------------------------------------------------------
  43 /* */
  44 bool IndexCopy::CopyPackages(string CDROM,string Name,vector<string> &List,
  45                              pkgCdromStatus *log)
  46 {
  47    OpProgress *Progress = NULL;
  48    if (List.empty() == true)
  49       return true;
  50
  51    if(log)
  52       Progress = log->GetOpProgress();
  53
  54    bool NoStat = _config->FindB("APT::CDROM::Fast",false);
  55    bool Debug = _config->FindB("Debug::aptcdrom",false);
  56
  57    // Prepare the progress indicator
  58    off_t TotalSize = 0;
  59    std::vector<APT::Configuration::Compressor> const compressor = APT::Configuration::getCompressors();
  60    for (vector<string>::iterator I = List.begin(); I != List.end(); ++I)
  61    {
  62       struct stat Buf;
  63       bool found = false;
  64       std::string file = std::string(*I).append(GetFileName());
  65       for (std::vector<APT::Configuration::Compressor>::const_iterator c = compressor.begin();
  66            c != compressor.end(); ++c)
  67       {
  68          if (stat(std::string(file + c->Extension).c_str(), &Buf) != 0)
  69             continue;
  70          found = true;
  71          break;
  72       }
  73
  74       if (found == false)
  75          return _error->Errno("stat", "Stat failed for %s", file.c_str());
  76       TotalSize += Buf.st_size;
  77    }
  78
  79    off_t CurrentSize = 0;
  80    unsigned int NotFound = 0;
  81    unsigned int WrongSize = 0;
  82    unsigned int Packages = 0;
  83    for (vector<string>::iterator I = List.begin(); I != List.end(); ++I)
  84    {
  85       string OrigPath = string(*I,CDROM.length());
  86
  87       // Open the package file
  88       FileFd Pkg(*I + GetFileName(), FileFd::ReadOnly, FileFd::Auto);
  89       off_t const FileSize = Pkg.Size();
  90
  91       pkgTagFile Parser(&Pkg);
  92       if (_error->PendingError() == true)
  93          return false;
  94
  95       // Open the output file
  96       char S[400];
  97       snprintf(S,sizeof(S),"cdrom:[%s]/%s%s",Name.c_str(),
  98                (*I).c_str() + CDROM.length(),GetFileName());
  99       string TargetF = _config->FindDir("Dir::State::lists") + "partial/";
 100       TargetF += URItoFileName(S);
 101       FileFd Target;
 102       if (_config->FindB("APT::CDROM::NoAct",false) == true)
 103       {
 104          TargetF = "/dev/null";
 105          Target.Open(TargetF,FileFd::WriteExists);
 106       } else {
 107          Target.Open(TargetF,FileFd::WriteAtomic);
 108       }
 109       FILE *TargetFl = fdopen(dup(Target.Fd()),"w");
 110       if (_error->PendingError() == true)
 111          return false;
 112       if (TargetFl == 0)
 113          return _error->Errno("fdopen","Failed to reopen fd");
 114
 115       // Setup the progress meter
 116       if(Progress)
 117          Progress->OverallProgress(CurrentSize,TotalSize,FileSize,
 118                                    string("Reading ") + Type() + " Indexes");
 119
 120       // Parse
 121       if(Progress)
 122          Progress->SubProgress(Pkg.Size());
 123       pkgTagSection Section;
 124       this->Section = &Section;
 125       string Prefix;
 126       unsigned long Hits = 0;
 127       unsigned long Chop = 0;
 128       while (Parser.Step(Section) == true)
 129       {
 130          if(Progress)
 131             Progress->Progress(Parser.Offset());
 132          string File;
 133          unsigned long long Size;
 134          if (GetFile(File,Size) == false)
 135          {
 136             fclose(TargetFl);
 137             return false;
 138          }
 139
 140          if (Chop != 0)
 141             File = OrigPath + ChopDirs(File,Chop);
 142
 143          // See if the file exists
 144          bool Mangled = false;
 145          if (NoStat == false || Hits < 10)
 146          {
 147             // Attempt to fix broken structure
 148             if (Hits == 0)
 149             {
 150                if (ReconstructPrefix(Prefix,OrigPath,CDROM,File) == false &&
 151                    ReconstructChop(Chop,*I,File) == false)
 152                {
 153                   if (Debug == true)
 154                      clog << "Missed: " << File << endl;
 155                   NotFound++;
 156                   continue;
 157                }
 158                if (Chop != 0)
 159                   File = OrigPath + ChopDirs(File,Chop);
 160             }
 161
 162             // Get the size
 163             struct stat Buf;
 164             if (stat(string(CDROM + Prefix + File).c_str(),&Buf) != 0 ||
 165                 Buf.st_size == 0)
 166             {
 167                // Attempt to fix busted symlink support for one instance
 168                string OrigFile = File;
 169                string::size_type Start = File.find("binary-");
 170                string::size_type End = File.find("/",Start+3);
 171                if (Start != string::npos && End != string::npos)
 172                {
 173                   File.replace(Start,End-Start,"binary-all");
 174                   Mangled = true;
 175                }
 176
 177                if (Mangled == false ||
 178                    stat(string(CDROM + Prefix + File).c_str(),&Buf) != 0)
 179                {
 180                   if (Debug == true)
 181                      clog << "Missed(2): " << OrigFile << endl;
 182                   NotFound++;
 183                   continue;
 184                }
 185             }
 186
 187             // Size match
 188             if ((unsigned long long)Buf.st_size != Size)
 189             {
 190                if (Debug == true)
 191                   clog << "Wrong Size: " << File << endl;
 192                WrongSize++;
 193                continue;
 194             }
 195          }
 196
 197          Packages++;
 198          Hits++;
 199
 200          if (RewriteEntry(TargetFl,File) == false)
 201          {
 202             fclose(TargetFl);
 203             return false;
 204          }
 205       }
 206       fclose(TargetFl);
 207
 208       if (Debug == true)
 209          cout << " Processed by using Prefix '" << Prefix << "' and chop " << Chop << endl;
 210
 211       if (_config->FindB("APT::CDROM::NoAct",false) == false)
 212       {
 213          // Move out of the partial directory
 214          Target.Close();
 215          string FinalF = _config->FindDir("Dir::State::lists");
 216          FinalF += URItoFileName(S);
 217          if (rename(TargetF.c_str(),FinalF.c_str()) != 0)
 218             return _error->Errno("rename","Failed to rename");
 219       }
 220
 221       /* Mangle the source to be in the proper notation with
 222          prefix dist [component] */
 223       *I = string(*I,Prefix.length());
 224       ConvertToSourceList(CDROM,*I);
 225       *I = Prefix + ' ' + *I;
 226
 227       CurrentSize += FileSize;
 228    }
 229    if(Progress)
 230       Progress->Done();
 231
 232    // Some stats
 233    if(log) {
 234       stringstream msg;
 235       if(NotFound == 0 && WrongSize == 0)
 236          ioprintf(msg, _("Wrote %i records.\n"), Packages);
 237       else if (NotFound != 0 && WrongSize == 0)
 238          ioprintf(msg, _("Wrote %i records with %i missing files.\n"),
 239                   Packages, NotFound);
 240       else if (NotFound == 0 && WrongSize != 0)
 241          ioprintf(msg, _("Wrote %i records with %i mismatched files\n"),
 242                   Packages, WrongSize);
 243       if (NotFound != 0 && WrongSize != 0)
 244          ioprintf(msg, _("Wrote %i records with %i missing files and %i mismatched files\n"), Packages, NotFound, WrongSize);
 245    }
 246
 247    if (Packages == 0)
 248       _error->Warning("No valid records were found.");
 249
 250    if (NotFound + WrongSize > 10)
 251       _error->Warning("A lot of entries were discarded, something may be wrong.\n");
 252
 253
 254    return true;
 255 }
 256                                                                         /*}}}*/
 257 // IndexCopy::ChopDirs - Chop off the leading directory components      /*{{{*/
 258 // ---------------------------------------------------------------------
 259 /* */
 260 string IndexCopy::ChopDirs(string Path,unsigned int Depth)
 261 {
 262    string::size_type I = 0;
 263    do
 264    {
 265       I = Path.find('/',I+1);
 266       Depth--;
 267    }
 268    while (I != string::npos && Depth != 0);
 269
 270    if (I == string::npos)
 271       return string();
 272
 273    return string(Path,I+1);
 274 }
 275                                                                         /*}}}*/
 276 // IndexCopy::ReconstructPrefix - Fix strange prefixing                 /*{{{*/
 277 // ---------------------------------------------------------------------
 278 /* This prepends dir components from the path to the package files to
 279    the path to the deb until it is found */
 280 bool IndexCopy::ReconstructPrefix(string &Prefix,string OrigPath,string CD,
 281                                   string File)
 282 {
 283    bool Debug = _config->FindB("Debug::aptcdrom",false);
 284    unsigned int Depth = 1;
 285    string MyPrefix = Prefix;
 286    while (1)
 287    {
 288       struct stat Buf;
 289       if (stat(string(CD + MyPrefix + File).c_str(),&Buf) != 0)
 290       {
 291          if (Debug == true)
 292             cout << "Failed, " << CD + MyPrefix + File << endl;
 293          if (GrabFirst(OrigPath,MyPrefix,Depth++) == true)
 294             continue;
 295
 296          return false;
 297       }
 298       else
 299       {
 300          Prefix = MyPrefix;
 301          return true;
 302       }
 303    }
 304    return false;
 305 }
 306                                                                         /*}}}*/
 307 // IndexCopy::ReconstructChop - Fixes bad source paths                  /*{{{*/
 308 // ---------------------------------------------------------------------
 309 /* This removes path components from the filename and prepends the location
 310    of the package files until a file is found */
 311 bool IndexCopy::ReconstructChop(unsigned long &Chop,string Dir,string File)
 312 {
 313    // Attempt to reconstruct the filename
 314    unsigned long Depth = 0;
 315    while (1)
 316    {
 317       struct stat Buf;
 318       if (stat(string(Dir + File).c_str(),&Buf) != 0)
 319       {
 320          File = ChopDirs(File,1);
 321          Depth++;
 322          if (File.empty() == false)
 323             continue;
 324          return false;
 325       }
 326       else
 327       {
 328          Chop = Depth;
 329          return true;
 330       }
 331    }
 332    return false;
 333 }
 334                                                                         /*}}}*/
 335 // IndexCopy::ConvertToSourceList - Convert a Path to a sourcelist      /*{{{*/
 336 // ---------------------------------------------------------------------
 337 /* We look for things in dists/ notation and convert them to
 338    <dist> <component> form otherwise it is left alone. This also strips
 339    the CD path.
 340
 341    This implements a regex sort of like:
 342     (.*)/dists/([^/]*)/(.*)/binary-*
 343      ^          ^      ^- Component
 344      |          |-------- Distribution
 345      |------------------- Path
 346
 347    It was deciced to use only a single word for dist (rather than say
 348    unstable/non-us) to increase the chance that each CD gets a single
 349    line in sources.list.
 350  */
 351 void IndexCopy::ConvertToSourceList(string CD,string &Path)
 352 {
 353    // Strip the cdrom base path
 354    Path = string(Path,CD.length());
 355    if (Path.empty() == true)
 356       Path = "/";
 357
 358    // Too short to be a dists/ type
 359    if (Path.length() < strlen("dists/"))
 360       return;
 361
 362    // Not a dists type.
 363    if (stringcmp(Path.c_str(),Path.c_str()+strlen("dists/"),"dists/") != 0)
 364       return;
 365
 366    // Isolate the dist
 367    string::size_type Slash = strlen("dists/");
 368    string::size_type Slash2 = Path.find('/',Slash + 1);
 369    if (Slash2 == string::npos || Slash2 + 2 >= Path.length())
 370       return;
 371    string Dist = string(Path,Slash,Slash2 - Slash);
 372
 373    // Isolate the component
 374    Slash = Slash2;
 375    for (unsigned I = 0; I != 10; I++)
 376    {
 377       Slash = Path.find('/',Slash+1);
 378       if (Slash == string::npos || Slash + 2 >= Path.length())
 379          return;
 380       string Comp = string(Path,Slash2+1,Slash - Slash2-1);
 381
 382       // Verify the trailing binary- bit
 383       string::size_type BinSlash = Path.find('/',Slash + 1);
 384       if (Slash == string::npos)
 385          return;
 386       string Binary = string(Path,Slash+1,BinSlash - Slash-1);
 387
 388       if (strncmp(Binary.c_str(), "binary-", strlen("binary-")) == 0)
 389       {
 390          Binary.erase(0, strlen("binary-"));
 391          if (APT::Configuration::checkArchitecture(Binary) == false)
 392             continue;
 393       }
 394       else if (Binary != "source")
 395          continue;
 396
 397       Path = Dist + ' ' + Comp;
 398       return;
 399    }
 400 }
 401                                                                         /*}}}*/
 402 // IndexCopy::GrabFirst - Return the first Depth path components        /*{{{*/
 403 // ---------------------------------------------------------------------
 404 /* */
 405 bool IndexCopy::GrabFirst(string Path,string &To,unsigned int Depth)
 406 {
 407    string::size_type I = 0;
 408    do
 409    {
 410       I = Path.find('/',I+1);
 411       Depth--;
 412    }
 413    while (I != string::npos && Depth != 0);
 414
 415    if (I == string::npos)
 416       return false;
 417
 418    To = string(Path,0,I+1);
 419    return true;
 420 }
 421                                                                         /*}}}*/
 422 // PackageCopy::GetFile - Get the file information from the section     /*{{{*/
 423 // ---------------------------------------------------------------------
 424 /* */
 425 bool PackageCopy::GetFile(string &File,unsigned long long &Size)
 426 {
 427    File = Section->FindS("Filename");
 428    Size = Section->FindI("Size");
 429    if (File.empty() || Size == 0)
 430       return _error->Error("Cannot find filename or size tag");
 431    return true;
 432 }
 433                                                                         /*}}}*/
 434 // PackageCopy::RewriteEntry - Rewrite the entry with a new filename    /*{{{*/
 435 // ---------------------------------------------------------------------
 436 /* */
 437 bool PackageCopy::RewriteEntry(FILE *Target,string File)
 438 {
 439    TFRewriteData Changes[] = {{"Filename",File.c_str()},
 440                               {}};
 441
 442    if (TFRewrite(Target,*Section,TFRewritePackageOrder,Changes) == false)
 443       return false;
 444    fputc('\n',Target);
 445    return true;
 446 }
 447                                                                         /*}}}*/
 448 // SourceCopy::GetFile - Get the file information from the section      /*{{{*/
 449 // ---------------------------------------------------------------------
 450 /* */
 451 bool SourceCopy::GetFile(string &File,unsigned long long &Size)
 452 {
 453    string Files = Section->FindS("Files");
 454    if (Files.empty() == true)
 455       return false;
 456
 457    // Stash the / terminated directory prefix
 458    string Base = Section->FindS("Directory");
 459    if (Base.empty() == false && Base[Base.length()-1] != '/')
 460       Base += '/';
 461
 462    // Read the first file triplet
 463    const char *C = Files.c_str();
 464    string sSize;
 465    string MD5Hash;
 466
 467    // Parse each of the elements
 468    if (ParseQuoteWord(C,MD5Hash) == false ||
 469        ParseQuoteWord(C,sSize) == false ||
 470        ParseQuoteWord(C,File) == false)
 471       return _error->Error("Error parsing file record");
 472
 473    // Parse the size and append the directory
 474    Size = strtoull(sSize.c_str(), NULL, 10);
 475    File = Base + File;
 476    return true;
 477 }
 478                                                                         /*}}}*/
 479 // SourceCopy::RewriteEntry - Rewrite the entry with a new filename     /*{{{*/
 480 // ---------------------------------------------------------------------
 481 /* */
 482 bool SourceCopy::RewriteEntry(FILE *Target,string File)
 483 {
 484    string Dir(File,0,File.rfind('/'));
 485    TFRewriteData Changes[] = {{"Directory",Dir.c_str()},
 486                               {}};
 487
 488    if (TFRewrite(Target,*Section,TFRewriteSourceOrder,Changes) == false)
 489       return false;
 490    fputc('\n',Target);
 491    return true;
 492 }
 493                                                                         /*}}}*/
 494 // SigVerify::Verify - Verify a files md5sum against its metaindex      /*{{{*/
 495 // ---------------------------------------------------------------------
 496 /* */
 497 bool SigVerify::Verify(string prefix, string file, indexRecords *MetaIndex)
 498 {
 499    const indexRecords::checkSum *Record = MetaIndex->Lookup(file);
 500    bool const Debug = _config->FindB("Debug::aptcdrom",false);
 501
 502    // we skip non-existing files in the verifcation of the Release file
 503    // as non-existing files do not harm, but a warning scares people and
 504    // makes it hard to strip unneeded files from an ISO like uncompressed
 505    // indexes as it is done on the mirrors (see also LP: #255545 )
 506    if(!RealFileExists(prefix+file))
 507    {
 508       if (Debug == true)
 509          cout << "Skipping nonexistent in " << prefix << " file " << file << std::endl;
 510       return true;
 511    }
 512
 513    if (!Record)
 514    {
 515       _error->Warning(_("Can't find authentication record for: %s"), file.c_str());
 516       return false;
 517    }
 518
 519    if (!Record->Hash.VerifyFile(prefix+file))
 520    {
 521       _error->Warning(_("Hash mismatch for: %s"),file.c_str());
 522       return false;
 523    }
 524
 525    if(Debug == true)
 526    {
 527       cout << "File: " << prefix+file << endl;
 528       cout << "Expected Hash " << Record->Hash.toStr() << endl;
 529    }
 530
 531    return true;
 532 }
 533                                                                         /*}}}*/
 534 bool SigVerify::CopyMetaIndex(string CDROM, string CDName,              /*{{{*/
 535                               string prefix, string file)
 536 {
 537       char S[400];
 538       snprintf(S,sizeof(S),"cdrom:[%s]/%s%s",CDName.c_str(),
 539                (prefix).c_str() + CDROM.length(),file.c_str());
 540       string TargetF = _config->FindDir("Dir::State::lists");
 541       TargetF += URItoFileName(S);
 542
 543       FileFd Target;
 544       FileFd Rel;
 545       Target.Open(TargetF,FileFd::WriteAtomic);
 546       Rel.Open(prefix + file,FileFd::ReadOnly);
 547       if (_error->PendingError() == true)
 548          return false;
 549       if (CopyFile(Rel,Target) == false)
 550          return false;
 551
 552       return true;
 553 }
 554                                                                         /*}}}*/
 555 bool SigVerify::CopyAndVerify(string CDROM,string Name,vector<string> &SigList, /*{{{*/
 556                               vector<string> PkgList,vector<string> SrcList)
 557 {
 558    if (SigList.empty() == true)
 559       return true;
 560
 561    bool Debug = _config->FindB("Debug::aptcdrom",false);
 562
 563    // Read all Release files
 564    for (vector<string>::iterator I = SigList.begin(); I != SigList.end(); ++I)
 565    {
 566       if(Debug)
 567          cout << "Signature verify for: " << *I << endl;
 568
 569       indexRecords *MetaIndex = new indexRecords;
 570       string prefix = *I;
 571
 572       string const releasegpg = *I+"Release.gpg";
 573       string const release = *I+"Release";
 574       string const inrelease = *I+"InRelease";
 575       bool useInRelease = true;
 576
 577       // a Release.gpg without a Release should never happen
 578       if (RealFileExists(inrelease) == true)
 579          ;
 580       else if(RealFileExists(release) == false || RealFileExists(releasegpg) == false)
 581       {
 582          delete MetaIndex;
 583          continue;
 584       }
 585       else
 586          useInRelease = false;
 587
 588       pid_t pid = ExecFork();
 589       if(pid < 0) {
 590          _error->Error("Fork failed");
 591          return false;
 592       }
 593       if(pid == 0)
 594       {
 595          if (useInRelease == true)
 596             ExecGPGV(inrelease, inrelease);
 597          else
 598             ExecGPGV(release, releasegpg);
 599       }
 600
 601       if(!ExecWait(pid, "gpgv")) {
 602          _error->Warning("Signature verification failed for: %s",
 603                          (useInRelease ? inrelease.c_str() : releasegpg.c_str()));
 604          // something went wrong, don't copy the Release.gpg
 605          // FIXME: delete any existing gpg file?
 606          continue;
 607       }
 608
 609       // Open the Release file and add it to the MetaIndex
 610       if(!MetaIndex->Load(release))
 611       {
 612          _error->Error("%s",MetaIndex->ErrorText.c_str());
 613          return false;
 614       }
 615
 616       // go over the Indexfiles and see if they verify
 617       // if so, remove them from our copy of the lists
 618       vector<string> keys = MetaIndex->MetaKeys();
 619       for (vector<string>::iterator I = keys.begin(); I != keys.end(); ++I)
 620       {
 621          if(!Verify(prefix,*I, MetaIndex)) {
 622             // something went wrong, don't copy the Release.gpg
 623             // FIXME: delete any existing gpg file?
 624             _error->Discard();
 625             continue;
 626          }
 627       }
 628
 629       // we need a fresh one for the Release.gpg
 630       delete MetaIndex;
 631
 632       // everything was fine, copy the Release and Release.gpg file
 633       if (useInRelease == true)
 634          CopyMetaIndex(CDROM, Name, prefix, "InRelease");
 635       else
 636       {
 637          CopyMetaIndex(CDROM, Name, prefix, "Release");
 638          CopyMetaIndex(CDROM, Name, prefix, "Release.gpg");
 639       }
 640    }
 641
 642    return true;
 643 }
 644                                                                         /*}}}*/
 645 bool TranslationsCopy::CopyTranslations(string CDROM,string Name,       /*{{{*/
 646                                 vector<string> &List, pkgCdromStatus *log)
 647 {
 648    OpProgress *Progress = NULL;
 649    if (List.empty() == true)
 650       return true;
 651
 652    if(log)
 653       Progress = log->GetOpProgress();
 654
 655    bool Debug = _config->FindB("Debug::aptcdrom",false);
 656
 657    // Prepare the progress indicator
 658    off_t TotalSize = 0;
 659    std::vector<APT::Configuration::Compressor> const compressor = APT::Configuration::getCompressors();
 660    for (vector<string>::iterator I = List.begin(); I != List.end(); ++I)
 661    {
 662       struct stat Buf;
 663       bool found = false;
 664       std::string file = *I;
 665       for (std::vector<APT::Configuration::Compressor>::const_iterator c = compressor.begin();
 666            c != compressor.end(); ++c)
 667       {
 668          if (stat(std::string(file + c->Extension).c_str(), &Buf) != 0)
 669             continue;
 670          found = true;
 671          break;
 672       }
 673
 674       if (found == false)
 675          return _error->Errno("stat", "Stat failed for %s", file.c_str());
 676       TotalSize += Buf.st_size;
 677    }
 678
 679    off_t CurrentSize = 0;
 680    unsigned int NotFound = 0;
 681    unsigned int WrongSize = 0;
 682    unsigned int Packages = 0;
 683    for (vector<string>::iterator I = List.begin(); I != List.end(); ++I)
 684    {
 685       string OrigPath = string(*I,CDROM.length());
 686
 687       // Open the package file
 688       FileFd Pkg(*I, FileFd::ReadOnly, FileFd::Auto);
 689       off_t const FileSize = Pkg.Size();
 690
 691       pkgTagFile Parser(&Pkg);
 692       if (_error->PendingError() == true)
 693          return false;
 694
 695       // Open the output file
 696       char S[400];
 697       snprintf(S,sizeof(S),"cdrom:[%s]/%s",Name.c_str(),
 698                (*I).c_str() + CDROM.length());
 699       string TargetF = _config->FindDir("Dir::State::lists") + "partial/";
 700       TargetF += URItoFileName(S);
 701       FileFd Target;
 702       if (_config->FindB("APT::CDROM::NoAct",false) == true)
 703       {
 704          TargetF = "/dev/null";
 705          Target.Open(TargetF,FileFd::WriteExists);
 706       } else {
 707          Target.Open(TargetF,FileFd::WriteAtomic);
 708       }
 709       FILE *TargetFl = fdopen(dup(Target.Fd()),"w");
 710       if (_error->PendingError() == true)
 711          return false;
 712       if (TargetFl == 0)
 713          return _error->Errno("fdopen","Failed to reopen fd");
 714
 715       // Setup the progress meter
 716       if(Progress)
 717          Progress->OverallProgress(CurrentSize,TotalSize,FileSize,
 718                                    string("Reading Translation Indexes"));
 719
 720       // Parse
 721       if(Progress)
 722          Progress->SubProgress(Pkg.Size());
 723       pkgTagSection Section;
 724       this->Section = &Section;
 725       string Prefix;
 726       unsigned long Hits = 0;
 727       while (Parser.Step(Section) == true)
 728       {
 729          if(Progress)
 730             Progress->Progress(Parser.Offset());
 731
 732          const char *Start;
 733          const char *Stop;
 734          Section.GetSection(Start,Stop);
 735          fwrite(Start,Stop-Start, 1, TargetFl);
 736          fputc('\n',TargetFl);
 737
 738          Packages++;
 739          Hits++;
 740       }
 741       fclose(TargetFl);
 742
 743       if (Debug == true)
 744          cout << " Processed by using Prefix '" << Prefix << "' and chop " << endl;
 745
 746       if (_config->FindB("APT::CDROM::NoAct",false) == false)
 747       {
 748          // Move out of the partial directory
 749          Target.Close();
 750          string FinalF = _config->FindDir("Dir::State::lists");
 751          FinalF += URItoFileName(S);
 752          if (rename(TargetF.c_str(),FinalF.c_str()) != 0)
 753             return _error->Errno("rename","Failed to rename");
 754       }
 755
 756
 757       CurrentSize += FileSize;
 758    }
 759    if(Progress)
 760       Progress->Done();
 761
 762    // Some stats
 763    if(log) {
 764       stringstream msg;
 765       if(NotFound == 0 && WrongSize == 0)
 766          ioprintf(msg, _("Wrote %i records.\n"), Packages);
 767       else if (NotFound != 0 && WrongSize == 0)
 768          ioprintf(msg, _("Wrote %i records with %i missing files.\n"),
 769                   Packages, NotFound);
 770       else if (NotFound == 0 && WrongSize != 0)
 771          ioprintf(msg, _("Wrote %i records with %i mismatched files\n"),
 772                   Packages, WrongSize);
 773       if (NotFound != 0 && WrongSize != 0)
 774          ioprintf(msg, _("Wrote %i records with %i missing files and %i mismatched files\n"), Packages, NotFound, WrongSize);
 775    }
 776
 777    if (Packages == 0)
 778       _error->Warning("No valid records were found.");
 779
 780    if (NotFound + WrongSize > 10)
 781       _error->Warning("A lot of entries were discarded, something may be wrong.\n");
 782
 783
 784    return true;
 785 }
 786                                                                         /*}}}*/