apt-pkg/cdrom.cc

   1 /*
   2  */
   3 #include <config.h>
   4
   5 #include <apt-pkg/error.h>
   6 #include <apt-pkg/cdromutl.h>
   7 #include <apt-pkg/strutl.h>
   8 #include <apt-pkg/cdrom.h>
   9 #include <apt-pkg/aptconfiguration.h>
  10 #include <apt-pkg/configuration.h>
  11 #include <apt-pkg/fileutl.h>
  12 #include <apt-pkg/indexcopy.h>
  13
  14
  15 #include <string.h>
  16 #include <iostream>
  17 #include <string>
  18 #include <vector>
  19 #include <sstream>
  20 #include <fstream>
  21 #include <sys/stat.h>
  22 #include <dirent.h>
  23 #include <unistd.h>
  24 #include <stdio.h>
  25 #include <algorithm>
  26 #include <dlfcn.h>
  27
  28 #include<apti18n.h>
  29
  30 using namespace std;
  31
  32 // FindPackages - Find the package files on the CDROM                   /*{{{*/
  33 // ---------------------------------------------------------------------
  34 /* We look over the cdrom for package files. This is a recursive
  35    search that short circuits when it his a package file in the dir.
  36    This speeds it up greatly as the majority of the size is in the
  37    binary-* sub dirs. */
  38 bool pkgCdrom::FindPackages(string CD,
  39                             vector<string> &List,
  40                             vector<string> &SList,
  41                             vector<string> &SigList,
  42                             vector<string> &TransList,
  43                             string &InfoDir, pkgCdromStatus *log,
  44                             unsigned int Depth)
  45 {
  46    static ino_t Inodes[9];
  47    DIR *D;
  48
  49    // if we have a look we "pulse" now
  50    if(log)
  51       log->Update();
  52
  53    if (Depth >= 7)
  54       return true;
  55
  56    if (CD[CD.length()-1] != '/')
  57       CD += '/';
  58
  59    if (chdir(CD.c_str()) != 0)
  60       return _error->Errno("chdir","Unable to change to %s",CD.c_str());
  61
  62    // Look for a .disk subdirectory
  63    if (DirectoryExists(".disk") == true)
  64    {
  65       if (InfoDir.empty() == true)
  66          InfoDir = CD + ".disk/";
  67    }
  68
  69    // Don't look into directories that have been marked to ingore.
  70    if (RealFileExists(".aptignr") == true)
  71       return true;
  72
  73    /* Check _first_ for a signature file as apt-cdrom assumes that all files
  74       under a Packages/Source file are in control of that file and stops
  75       the scanning
  76    */
  77    if (RealFileExists("Release.gpg") == true || RealFileExists("InRelease") == true)
  78    {
  79       SigList.push_back(CD);
  80    }
  81
  82    /* Aha! We found some package files. We assume that everything under
  83       this dir is controlled by those package files so we don't look down
  84       anymore */
  85    std::vector<APT::Configuration::Compressor> const compressor = APT::Configuration::getCompressors();
  86    for (std::vector<APT::Configuration::Compressor>::const_iterator c = compressor.begin();
  87         c != compressor.end(); ++c)
  88    {
  89       if (RealFileExists(std::string("Packages").append(c->Extension).c_str()) == false)
  90          continue;
  91
  92       if (_config->FindB("Debug::aptcdrom",false) == true)
  93          std::clog << "Found Packages in " << CD << std::endl;
  94       List.push_back(CD);
  95
  96       // Continue down if thorough is given
  97       if (_config->FindB("APT::CDROM::Thorough",false) == false)
  98          return true;
  99       break;
 100    }
 101    for (std::vector<APT::Configuration::Compressor>::const_iterator c = compressor.begin();
 102         c != compressor.end(); ++c)
 103    {
 104       if (RealFileExists(std::string("Sources").append(c->Extension).c_str()) == false)
 105          continue;
 106
 107       if (_config->FindB("Debug::aptcdrom",false) == true)
 108          std::clog << "Found Sources in " << CD << std::endl;
 109       SList.push_back(CD);
 110
 111       // Continue down if thorough is given
 112       if (_config->FindB("APT::CDROM::Thorough",false) == false)
 113          return true;
 114       break;
 115    }
 116
 117    // see if we find translation indices
 118    if (DirectoryExists("i18n") == true)
 119    {
 120       D = opendir("i18n");
 121       for (struct dirent *Dir = readdir(D); Dir != 0; Dir = readdir(D))
 122       {
 123          if(strncmp(Dir->d_name, "Translation-", strlen("Translation-")) != 0)
 124             continue;
 125          string file = Dir->d_name;
 126          for (std::vector<APT::Configuration::Compressor>::const_iterator c = compressor.begin();
 127               c != compressor.end(); ++c)
 128          {
 129             string fileext = flExtension(file);
 130             if (file == fileext)
 131                fileext.clear();
 132             else if (fileext.empty() == false)
 133                fileext = "." + fileext;
 134
 135             if (c->Extension == fileext)
 136             {
 137                if (_config->FindB("Debug::aptcdrom",false) == true)
 138                   std::clog << "Found translation " << Dir->d_name << " in " << CD << "i18n/" << std::endl;
 139                file.erase(file.size() - fileext.size());
 140                TransList.push_back(CD + "i18n/" + file);
 141                break;
 142             }
 143          }
 144       }
 145       closedir(D);
 146    }
 147
 148    D = opendir(".");
 149    if (D == 0)
 150       return _error->Errno("opendir","Unable to read %s",CD.c_str());
 151
 152    // Run over the directory
 153    for (struct dirent *Dir = readdir(D); Dir != 0; Dir = readdir(D))
 154    {
 155       // Skip some files..
 156       if (strcmp(Dir->d_name,".") == 0 ||
 157           strcmp(Dir->d_name,"..") == 0 ||
 158           //strcmp(Dir->d_name,"source") == 0 ||
 159           strcmp(Dir->d_name,".disk") == 0 ||
 160           strcmp(Dir->d_name,"experimental") == 0 ||
 161           strcmp(Dir->d_name,"binary-all") == 0 ||
 162           strcmp(Dir->d_name,"debian-installer") == 0)
 163          continue;
 164
 165       // See if the name is a sub directory
 166       struct stat Buf;
 167       if (stat(Dir->d_name,&Buf) != 0)
 168          continue;
 169
 170       if (S_ISDIR(Buf.st_mode) == 0)
 171          continue;
 172
 173       unsigned int I;
 174       for (I = 0; I != Depth; I++)
 175          if (Inodes[I] == Buf.st_ino)
 176             break;
 177       if (I != Depth)
 178          continue;
 179
 180       // Store the inodes weve seen
 181       Inodes[Depth] = Buf.st_ino;
 182
 183       // Descend
 184       if (FindPackages(CD + Dir->d_name,List,SList,SigList,TransList,InfoDir,log,Depth+1) == false)
 185          break;
 186
 187       if (chdir(CD.c_str()) != 0)
 188       {
 189          _error->Errno("chdir","Unable to change to %s", CD.c_str());
 190          closedir(D);
 191          return false;
 192       }
 193    };
 194
 195    closedir(D);
 196
 197    return !_error->PendingError();
 198 }
 199                                                                         /*}}}*/
 200 // Score - We compute a 'score' for a path                              /*{{{*/
 201 // ---------------------------------------------------------------------
 202 /* Paths are scored based on how close they come to what I consider
 203    normal. That is ones that have 'dist' 'stable' 'testing' will score
 204    higher than ones without. */
 205 int pkgCdrom::Score(string Path)
 206 {
 207    int Res = 0;
 208    if (Path.find("stable/") != string::npos)
 209       Res += 29;
 210    if (Path.find("/binary-") != string::npos)
 211       Res += 20;
 212    if (Path.find("testing/") != string::npos)
 213       Res += 28;
 214    if (Path.find("unstable/") != string::npos)
 215       Res += 27;
 216    if (Path.find("/dists/") != string::npos)
 217       Res += 40;
 218    if (Path.find("/main/") != string::npos)
 219       Res += 20;
 220    if (Path.find("/contrib/") != string::npos)
 221       Res += 20;
 222    if (Path.find("/non-free/") != string::npos)
 223       Res += 20;
 224    if (Path.find("/non-US/") != string::npos)
 225       Res += 20;
 226    if (Path.find("/source/") != string::npos)
 227       Res += 10;
 228    if (Path.find("/debian/") != string::npos)
 229       Res -= 10;
 230
 231    // check for symlinks in the patch leading to the actual file
 232    // a symlink gets a big penalty
 233    struct stat Buf;
 234    string statPath = flNotFile(Path);
 235    string cdromPath = _config->FindDir("Acquire::cdrom::mount");
 236    while(statPath != cdromPath && statPath != "./") {
 237       statPath.resize(statPath.size()-1);  // remove the trailing '/'
 238       if (lstat(statPath.c_str(),&Buf) == 0) {
 239         if(S_ISLNK(Buf.st_mode)) {
 240            Res -= 60;
 241            break;
 242         }
 243       }
 244       statPath = flNotFile(statPath); // descent
 245    }
 246
 247    return Res;
 248 }
 249                                                                         /*}}}*/
 250 // DropBinaryArch - Dump dirs with a string like /binary-<foo>/         /*{{{*/
 251 // ---------------------------------------------------------------------
 252 /* Here we drop everything that is not this machines arch */
 253 bool pkgCdrom::DropBinaryArch(vector<string> &List)
 254 {
 255
 256    for (unsigned int I = 0; I < List.size(); I++)
 257    {
 258       const char *Str = List[I].c_str();
 259       const char *Start, *End;
 260       if ((Start = strstr(Str,"/binary-")) == 0)
 261          continue;
 262
 263       // Between Start and End is the architecture
 264       Start += 8;
 265       if ((End = strstr(Start,"/")) != 0 && Start != End &&
 266           APT::Configuration::checkArchitecture(string(Start, End)) == true)
 267          continue; // okay, architecture is accepted
 268
 269       // not accepted -> Erase it
 270       List.erase(List.begin() + I);
 271       --I; // the next entry is at the same index after the erase
 272    }
 273
 274    return true;
 275 }
 276                                                                         /*}}}*/
 277 // DropTranslation - Dump unwanted Translation-<lang> files             /*{{{*/
 278 // ---------------------------------------------------------------------
 279 /* Here we drop everything that is not configured in Acquire::Languages */
 280 bool pkgCdrom::DropTranslation(vector<string> &List)
 281 {
 282    for (unsigned int I = 0; I < List.size(); I++)
 283    {
 284       const char *Start;
 285       if ((Start = strstr(List[I].c_str(), "/Translation-")) == NULL)
 286          continue;
 287       Start += strlen("/Translation-");
 288
 289       if (APT::Configuration::checkLanguage(Start, true) == true)
 290          continue;
 291
 292       // not accepted -> Erase it
 293       List.erase(List.begin() + I);
 294       --I; // the next entry is at the same index after the erase
 295    }
 296
 297    return true;
 298 }
 299                                                                         /*}}}*/
 300 // DropRepeats - Drop repeated files resulting from symlinks            /*{{{*/
 301 // ---------------------------------------------------------------------
 302 /* Here we go and stat every file that we found and strip dup inodes. */
 303 bool pkgCdrom::DropRepeats(vector<string> &List,const char *Name)
 304 {
 305    bool couldFindAllFiles = true;
 306    // Get a list of all the inodes
 307    ino_t *Inodes = new ino_t[List.size()];
 308    for (unsigned int I = 0; I != List.size(); ++I)
 309    {
 310       struct stat Buf;
 311       bool found = false;
 312
 313       std::vector<APT::Configuration::Compressor> const compressor = APT::Configuration::getCompressors();
 314       for (std::vector<APT::Configuration::Compressor>::const_iterator c = compressor.begin();
 315            c != compressor.end(); ++c)
 316       {
 317          std::string filename = std::string(List[I]).append(Name).append(c->Extension);
 318          if (stat(filename.c_str(), &Buf) != 0)
 319             continue;
 320          Inodes[I] = Buf.st_ino;
 321          found = true;
 322          break;
 323       }
 324
 325       if (found == false)
 326       {
 327          _error->Errno("stat","Failed to stat %s%s",List[I].c_str(), Name);
 328          couldFindAllFiles = false;
 329          Inodes[I] = 0;
 330       }
 331    }
 332
 333    // Look for dups
 334    for (unsigned int I = 0; I != List.size(); I++)
 335    {
 336       if (Inodes[I] == 0)
 337          continue;
 338       for (unsigned int J = I+1; J < List.size(); J++)
 339       {
 340          // No match
 341          if (Inodes[J] == 0 || Inodes[J] != Inodes[I])
 342             continue;
 343
 344          // We score the two paths.. and erase one
 345          int ScoreA = Score(List[I]);
 346          int ScoreB = Score(List[J]);
 347          if (ScoreA < ScoreB)
 348          {
 349             List[I] = string();
 350             break;
 351          }
 352
 353          List[J] = string();
 354       }
 355    }
 356    delete[] Inodes;
 357
 358    // Wipe erased entries
 359    for (unsigned int I = 0; I < List.size();)
 360    {
 361       if (List[I].empty() == false)
 362          I++;
 363       else
 364          List.erase(List.begin()+I);
 365    }
 366
 367    return couldFindAllFiles;
 368 }
 369                                                                         /*}}}*/
 370 // ReduceSourceList - Takes the path list and reduces it                /*{{{*/
 371 // ---------------------------------------------------------------------
 372 /* This takes the list of source list expressed entires and collects
 373    similar ones to form a single entry for each dist */
 374 void pkgCdrom::ReduceSourcelist(string /*CD*/,vector<string> &List)
 375 {
 376    sort(List.begin(),List.end());
 377
 378    // Collect similar entries
 379    for (vector<string>::iterator I = List.begin(); I != List.end(); ++I)
 380    {
 381       // Find a space..
 382       string::size_type Space = (*I).find(' ');
 383       if (Space == string::npos)
 384          continue;
 385       string::size_type SSpace = (*I).find(' ',Space + 1);
 386       if (SSpace == string::npos)
 387          continue;
 388
 389       string Word1 = string(*I,Space,SSpace-Space);
 390       string Prefix = string(*I,0,Space);
 391       string Component = string(*I,SSpace);
 392       for (vector<string>::iterator J = List.begin(); J != I; ++J)
 393       {
 394          // Find a space..
 395          string::size_type Space2 = (*J).find(' ');
 396          if (Space2 == string::npos)
 397             continue;
 398          string::size_type SSpace2 = (*J).find(' ',Space2 + 1);
 399          if (SSpace2 == string::npos)
 400             continue;
 401
 402          if (string(*J,0,Space2) != Prefix)
 403             continue;
 404          if (string(*J,Space2,SSpace2-Space2) != Word1)
 405             continue;
 406
 407          string Component2 = string(*J, SSpace2) + " ";
 408          if (Component2.find(Component + " ") == std::string::npos)
 409             *J += Component;
 410          I->clear();
 411       }
 412    }
 413
 414    // Wipe erased entries
 415    for (unsigned int I = 0; I < List.size();)
 416    {
 417       if (List[I].empty() == false)
 418          I++;
 419       else
 420          List.erase(List.begin()+I);
 421    }
 422 }
 423                                                                         /*}}}*/
 424 // WriteDatabase - Write the CDROM Database file                        /*{{{*/
 425 // ---------------------------------------------------------------------
 426 /* We rewrite the configuration class associated with the cdrom database. */
 427 bool pkgCdrom::WriteDatabase(Configuration &Cnf)
 428 {
 429    string DFile = _config->FindFile("Dir::State::cdroms");
 430    string NewFile = DFile + ".new";
 431
 432    unlink(NewFile.c_str());
 433    ofstream Out(NewFile.c_str());
 434    if (!Out)
 435       return _error->Errno("ofstream::ofstream",
 436                            "Failed to open %s.new",DFile.c_str());
 437
 438    /* Write out all of the configuration directives by walking the
 439       configuration tree */
 440    Cnf.Dump(Out, NULL, "%f \"%v\";\n", false);
 441
 442    Out.close();
 443
 444    if (FileExists(DFile) == true)
 445       rename(DFile.c_str(), (DFile + '~').c_str());
 446    if (rename(NewFile.c_str(),DFile.c_str()) != 0)
 447       return _error->Errno("rename","Failed to rename %s.new to %s",
 448                            DFile.c_str(),DFile.c_str());
 449
 450    return true;
 451 }
 452                                                                         /*}}}*/
 453 // WriteSourceList - Write an updated sourcelist                        /*{{{*/
 454 // ---------------------------------------------------------------------
 455 /* This reads the old source list and copies it into the new one. It
 456    appends the new CDROM entires just after the first block of comments.
 457    This places them first in the file. It also removes any old entries
 458    that were the same. */
 459 bool pkgCdrom::WriteSourceList(string Name,vector<string> &List,bool Source)
 460 {
 461    if (List.empty() == true)
 462       return true;
 463
 464    string File = _config->FindFile("Dir::Etc::sourcelist");
 465
 466    // Open the stream for reading
 467    ifstream F((FileExists(File)?File.c_str():"/dev/null"),
 468               ios::in );
 469    if (!F != 0)
 470       return _error->Errno("ifstream::ifstream","Opening %s",File.c_str());
 471
 472    string NewFile = File + ".new";
 473    unlink(NewFile.c_str());
 474    ofstream Out(NewFile.c_str());
 475    if (!Out)
 476       return _error->Errno("ofstream::ofstream",
 477                            "Failed to open %s.new",File.c_str());
 478
 479    // Create a short uri without the path
 480    string ShortURI = "cdrom:[" + Name + "]/";
 481    string ShortURI2 = "cdrom:" + Name + "/";     // For Compatibility
 482
 483    string Type;
 484    if (Source == true)
 485       Type = "deb-src";
 486    else
 487       Type = "deb";
 488
 489    char Buffer[300];
 490    int CurLine = 0;
 491    bool First = true;
 492    while (F.eof() == false)
 493    {
 494       F.getline(Buffer,sizeof(Buffer));
 495       CurLine++;
 496       if (F.fail() && !F.eof())
 497          return _error->Error(_("Line %u too long in source list %s."),
 498                               CurLine,File.c_str());
 499       _strtabexpand(Buffer,sizeof(Buffer));
 500       _strstrip(Buffer);
 501
 502       // Comment or blank
 503       if (Buffer[0] == '#' || Buffer[0] == 0)
 504       {
 505          Out << Buffer << endl;
 506          continue;
 507       }
 508
 509       if (First == true)
 510       {
 511          for (vector<string>::iterator I = List.begin(); I != List.end(); ++I)
 512          {
 513             string::size_type Space = (*I).find(' ');
 514             if (Space == string::npos)
 515                return _error->Error("Internal error");
 516             Out << Type << " cdrom:[" << Name << "]/" << string(*I,0,Space) <<
 517                " " << string(*I,Space+1) << endl;
 518          }
 519       }
 520       First = false;
 521
 522       // Grok it
 523       string cType;
 524       string URI;
 525       const char *C = Buffer;
 526       if (ParseQuoteWord(C,cType) == false ||
 527           ParseQuoteWord(C,URI) == false)
 528       {
 529          Out << Buffer << endl;
 530          continue;
 531       }
 532
 533       // Emit lines like this one
 534       if (cType != Type || (string(URI,0,ShortURI.length()) != ShortURI &&
 535           string(URI,0,ShortURI.length()) != ShortURI2))
 536       {
 537          Out << Buffer << endl;
 538          continue;
 539       }
 540    }
 541
 542    // Just in case the file was empty
 543    if (First == true)
 544    {
 545       for (vector<string>::iterator I = List.begin(); I != List.end(); ++I)
 546       {
 547          string::size_type Space = (*I).find(' ');
 548          if (Space == string::npos)
 549             return _error->Error("Internal error");
 550
 551          Out << "deb cdrom:[" << Name << "]/" << string(*I,0,Space) <<
 552             " " << string(*I,Space+1) << endl;
 553       }
 554    }
 555
 556    Out.close();
 557
 558    rename(File.c_str(), (File + '~').c_str());
 559    if (rename(NewFile.c_str(),File.c_str()) != 0)
 560       return _error->Errno("rename","Failed to rename %s.new to %s",
 561                            File.c_str(),File.c_str());
 562
 563    return true;
 564 }
 565                                                                         /*}}}*/
 566 bool pkgCdrom::UnmountCDROM(std::string const &CDROM, pkgCdromStatus * const log)/*{{{*/
 567 {
 568    if (_config->FindB("APT::CDROM::NoMount",false) == true)
 569       return true;
 570    if (log != NULL)
 571       log->Update(_("Unmounting CD-ROM...\n"), STEP_LAST);
 572    return UnmountCdrom(CDROM);
 573 }
 574                                                                         /*}}}*/
 575 bool pkgCdrom::MountAndIdentCDROM(Configuration &Database, std::string &CDROM, std::string &ident, pkgCdromStatus * const log, bool const interactive)/*{{{*/
 576 {
 577    // Startup
 578    CDROM = _config->FindDir("Acquire::cdrom::mount");
 579    if (CDROM[0] == '.')
 580       CDROM= SafeGetCWD() + '/' + CDROM;
 581
 582    if (log != NULL)
 583    {
 584       string msg;
 585       log->SetTotal(STEP_LAST);
 586       strprintf(msg, _("Using CD-ROM mount point %s\n"), CDROM.c_str());
 587       log->Update(msg, STEP_PREPARE);
 588    }
 589
 590    // Unmount the CD and get the user to put in the one they want
 591    if (_config->FindB("APT::CDROM::NoMount", false) == false)
 592    {
 593       if (interactive == true)
 594       {
 595          UnmountCDROM(CDROM, log);
 596
 597          if(log != NULL)
 598          {
 599             log->Update(_("Waiting for disc...\n"), STEP_WAIT);
 600             if(!log->ChangeCdrom()) {
 601                // user aborted
 602                return false;
 603             }
 604          }
 605       }
 606
 607       // Mount the new CDROM
 608       if(log != NULL)
 609          log->Update(_("Mounting CD-ROM...\n"), STEP_MOUNT);
 610
 611       if (MountCdrom(CDROM) == false)
 612          return _error->Error("Failed to mount the cdrom.");
 613    }
 614
 615    if (IsMounted(CDROM) == false)
 616       return _error->Error("Failed to mount the cdrom.");
 617
 618    // Hash the CD to get an ID
 619    if (log != NULL)
 620       log->Update(_("Identifying... "), STEP_IDENT);
 621
 622    if (IdentCdrom(CDROM,ident) == false)
 623    {
 624       ident = "";
 625       if (log != NULL)
 626          log->Update("\n");
 627       UnmountCDROM(CDROM, NULL);
 628       return false;
 629    }
 630
 631    if (log != NULL)
 632    {
 633       string msg;
 634       strprintf(msg, "[%s]\n", ident.c_str());
 635       log->Update(msg);
 636    }
 637
 638    // Read the database
 639    string DFile = _config->FindFile("Dir::State::cdroms");
 640    if (FileExists(DFile) == true)
 641    {
 642       if (ReadConfigFile(Database,DFile) == false)
 643       {
 644          UnmountCDROM(CDROM, NULL);
 645          return _error->Error("Unable to read the cdrom database %s",
 646                               DFile.c_str());
 647       }
 648    }
 649    return true;
 650 }
 651                                                                         /*}}}*/
 652 bool pkgCdrom::Ident(string &ident, pkgCdromStatus *log)                /*{{{*/
 653 {
 654    Configuration Database;
 655    std::string CDROM;
 656    if (MountAndIdentCDROM(Database, CDROM, ident, log, false) == false)
 657       return false;
 658
 659    if (log != NULL)
 660    {
 661       string msg;
 662       strprintf(msg, _("Stored label: %s\n"),
 663             Database.Find("CD::"+ident).c_str());
 664       log->Update(msg);
 665    }
 666
 667    // Unmount and finish
 668    UnmountCDROM(CDROM, log);
 669    return true;
 670 }
 671                                                                         /*}}}*/
 672 bool pkgCdrom::Add(pkgCdromStatus *log)                                 /*{{{*/
 673 {
 674    Configuration Database;
 675    std::string ID, CDROM;
 676    if (MountAndIdentCDROM(Database, CDROM, ID, log, true) == false)
 677       return false;
 678
 679    if(log != NULL)
 680       log->Update(_("Scanning disc for index files...\n"),STEP_SCAN);
 681
 682    // Get the CD structure
 683    vector<string> List;
 684    vector<string> SourceList;
 685    vector<string> SigList;
 686    vector<string> TransList;
 687    string StartDir = SafeGetCWD();
 688    string InfoDir;
 689    if (FindPackages(CDROM,List,SourceList, SigList,TransList,InfoDir,log) == false)
 690    {
 691       if (log != NULL)
 692          log->Update("\n");
 693       UnmountCDROM(CDROM, NULL);
 694       return false;
 695    }
 696
 697    if (chdir(StartDir.c_str()) != 0)
 698    {
 699       UnmountCDROM(CDROM, NULL);
 700       return _error->Errno("chdir","Unable to change to %s", StartDir.c_str());
 701    }
 702
 703    if (_config->FindB("Debug::aptcdrom",false) == true)
 704    {
 705       cout << "I found (binary):" << endl;
 706       for (vector<string>::iterator I = List.begin(); I != List.end(); ++I)
 707          cout << *I << endl;
 708       cout << "I found (source):" << endl;
 709       for (vector<string>::iterator I = SourceList.begin(); I != SourceList.end(); ++I)
 710          cout << *I << endl;
 711       cout << "I found (Signatures):" << endl;
 712       for (vector<string>::iterator I = SigList.begin(); I != SigList.end(); ++I)
 713          cout << *I << endl;
 714    }
 715
 716    //log->Update(_("Cleaning package lists..."), STEP_CLEAN);
 717
 718    // Fix up the list
 719    DropBinaryArch(List);
 720    DropRepeats(List,"Packages");
 721    DropRepeats(SourceList,"Sources");
 722    // FIXME: We ignore stat() errors here as we usually have only one of those in use
 723    // This has little potencial to drop 'valid' stat() errors as we know that one of these
 724    // files need to exist, but it would be better if we would check it here
 725    _error->PushToStack();
 726    DropRepeats(SigList,"Release.gpg");
 727    DropRepeats(SigList,"InRelease");
 728    _error->RevertToStack();
 729    DropRepeats(TransList,"");
 730    if (_config->FindB("APT::CDROM::DropTranslation", true) == true)
 731       DropTranslation(TransList);
 732    if(log != NULL) {
 733       string msg;
 734       strprintf(msg, _("Found %zu package indexes, %zu source indexes, "
 735                       "%zu translation indexes and %zu signatures\n"),
 736                List.size(), SourceList.size(), TransList.size(),
 737                SigList.size());
 738       log->Update(msg, STEP_SCAN);
 739    }
 740
 741    if (List.empty() == true && SourceList.empty() == true)
 742    {
 743       UnmountCDROM(CDROM, NULL);
 744       return _error->Error(_("Unable to locate any package files, perhaps this is not a Debian Disc or the wrong architecture?"));
 745    }
 746
 747    // Check if the CD is in the database
 748    string Name;
 749    if (Database.Exists("CD::" + ID) == false ||
 750        _config->FindB("APT::CDROM::Rename",false) == true)
 751    {
 752       // Try to use the CDs label if at all possible
 753       if (InfoDir.empty() == false &&
 754           FileExists(InfoDir + "/info") == true)
 755       {
 756          ifstream F((InfoDir + "/info").c_str());
 757          if (!F == 0)
 758             getline(F,Name);
 759
 760          if (Name.empty() == false)
 761          {
 762             // Escape special characters
 763             string::iterator J = Name.begin();
 764             for (; J != Name.end(); ++J)
 765                if (*J == '"' || *J == ']' || *J == '[')
 766                   *J = '_';
 767
 768             if(log != NULL)
 769             {
 770                string msg;
 771                strprintf(msg, _("Found label '%s'\n"), Name.c_str());
 772                log->Update(msg);
 773             }
 774             Database.Set("CD::" + ID + "::Label",Name);
 775          }
 776       }
 777
 778       if (_config->FindB("APT::CDROM::Rename",false) == true ||
 779           Name.empty() == true)
 780       {
 781          if(log == NULL)
 782          {
 783             UnmountCDROM(CDROM, NULL);
 784             return _error->Error("No disc name found and no way to ask for it");
 785          }
 786
 787          while(true) {
 788             if(!log->AskCdromName(Name)) {
 789                // user canceld
 790                UnmountCDROM(CDROM, NULL);
 791                return false;
 792             }
 793             cout << "Name: '" << Name << "'" << endl;
 794
 795             if (Name.empty() == false &&
 796                 Name.find('"') == string::npos &&
 797                 Name.find('[') == string::npos &&
 798                 Name.find(']') == string::npos)
 799                break;
 800             log->Update(_("That is not a valid name, try again.\n"));
 801          }
 802       }
 803    }
 804    else
 805       Name = Database.Find("CD::" + ID);
 806
 807    // Escape special characters
 808    string::iterator J = Name.begin();
 809    for (; J != Name.end(); ++J)
 810       if (*J == '"' || *J == ']' || *J == '[')
 811          *J = '_';
 812
 813    Database.Set("CD::" + ID,Name);
 814    if(log != NULL)
 815    {
 816       string msg;
 817       strprintf(msg, _("This disc is called: \n'%s'\n"), Name.c_str());
 818       log->Update(msg);
 819       log->Update(_("Copying package lists..."), STEP_COPY);
 820    }
 821
 822    // check for existence and possibly create state directory for copying
 823    string const listDir = _config->FindDir("Dir::State::lists");
 824    string const partialListDir = listDir + "partial/";
 825    if (CreateAPTDirectoryIfNeeded(_config->FindDir("Dir::State"), partialListDir) == false &&
 826        CreateAPTDirectoryIfNeeded(listDir, partialListDir) == false)
 827    {
 828       UnmountCDROM(CDROM, NULL);
 829       return _error->Errno("cdrom", _("List directory %spartial is missing."), listDir.c_str());
 830    }
 831
 832    // take care of the signatures and copy them if they are ok
 833    // (we do this before PackageCopy as it modifies "List" and "SourceList")
 834    SigVerify SignVerify;
 835    SignVerify.CopyAndVerify(CDROM, Name, SigList, List, SourceList);
 836
 837    // Copy the package files to the state directory
 838    PackageCopy Copy;
 839    SourceCopy SrcCopy;
 840    TranslationsCopy TransCopy;
 841    if (Copy.CopyPackages(CDROM,Name,List, log) == false ||
 842        SrcCopy.CopyPackages(CDROM,Name,SourceList, log) == false ||
 843        TransCopy.CopyTranslations(CDROM,Name,TransList, log) == false)
 844    {
 845       UnmountCDROM(CDROM, NULL);
 846       return false;
 847    }
 848
 849    // reduce the List so that it takes less space in sources.list
 850    ReduceSourcelist(CDROM,List);
 851    ReduceSourcelist(CDROM,SourceList);
 852
 853    // Write the database and sourcelist
 854    if (_config->FindB("APT::cdrom::NoAct",false) == false)
 855    {
 856       if (WriteDatabase(Database) == false)
 857       {
 858          UnmountCDROM(CDROM, NULL);
 859          return false;
 860       }
 861
 862       if(log != NULL)
 863          log->Update(_("Writing new source list\n"), STEP_WRITE);
 864       if (WriteSourceList(Name,List,false) == false ||
 865           WriteSourceList(Name,SourceList,true) == false)
 866       {
 867          UnmountCDROM(CDROM, NULL);
 868          return false;
 869       }
 870    }
 871
 872    // Print the sourcelist entries
 873    if(log != NULL)
 874       log->Update(_("Source list entries for this disc are:\n"));
 875
 876    for (vector<string>::iterator I = List.begin(); I != List.end(); ++I)
 877    {
 878       string::size_type Space = (*I).find(' ');
 879       if (Space == string::npos)
 880       {
 881          UnmountCDROM(CDROM, NULL);
 882          return _error->Error("Internal error");
 883       }
 884
 885       if(log != NULL)
 886       {
 887          stringstream msg;
 888          msg << "deb cdrom:[" << Name << "]/" << string(*I,0,Space) <<
 889             " " << string(*I,Space+1) << endl;
 890          log->Update(msg.str());
 891       }
 892    }
 893
 894    for (vector<string>::iterator I = SourceList.begin(); I != SourceList.end(); ++I)
 895    {
 896       string::size_type Space = (*I).find(' ');
 897       if (Space == string::npos)
 898       {
 899          UnmountCDROM(CDROM, NULL);
 900          return _error->Error("Internal error");
 901       }
 902
 903       if(log != NULL) {
 904          stringstream msg;
 905          msg << "deb-src cdrom:[" << Name << "]/" << string(*I,0,Space) <<
 906             " " << string(*I,Space+1) << endl;
 907          log->Update(msg.str());
 908       }
 909    }
 910
 911    // Unmount and finish
 912    UnmountCDROM(CDROM, log);
 913    return true;
 914 }
 915                                                                         /*}}}*/
 916 pkgUdevCdromDevices::pkgUdevCdromDevices()                              /*{{{*/
 917 : libudev_handle(NULL), udev_new(NULL), udev_enumerate_add_match_property(NULL),
 918    udev_enumerate_scan_devices(NULL), udev_enumerate_get_list_entry(NULL),
 919    udev_device_new_from_syspath(NULL), udev_enumerate_get_udev(NULL),
 920    udev_list_entry_get_name(NULL), udev_device_get_devnode(NULL),
 921    udev_enumerate_new(NULL), udev_list_entry_get_next(NULL),
 922    udev_device_get_property_value(NULL), udev_enumerate_add_match_sysattr(NULL)
 923 {
 924 }
 925                                                                         /*}}}*/
 926
 927 bool
 928 pkgUdevCdromDevices::Dlopen()                                           /*{{{*/
 929 {
 930    // alread open
 931    if(libudev_handle != NULL)
 932       return true;
 933
 934    // see if we can get libudev
 935    void *h = ::dlopen("libudev.so.0", RTLD_LAZY);
 936    if(h == NULL)
 937       return false;
 938
 939    // get the pointers to the udev structs
 940    libudev_handle = h;
 941    udev_new = (udev* (*)(void)) dlsym(h, "udev_new");
 942    udev_enumerate_add_match_property = (int (*)(udev_enumerate*, const char*, const char*))dlsym(h, "udev_enumerate_add_match_property");
 943    udev_enumerate_add_match_sysattr = (int (*)(udev_enumerate*, const char*, const char*))dlsym(h, "udev_enumerate_add_match_sysattr");
 944    udev_enumerate_scan_devices = (int (*)(udev_enumerate*))dlsym(h, "udev_enumerate_scan_devices");
 945    udev_enumerate_get_list_entry = (udev_list_entry* (*)(udev_enumerate*))dlsym(h, "udev_enumerate_get_list_entry");
 946    udev_device_new_from_syspath = (udev_device* (*)(udev*, const char*))dlsym(h, "udev_device_new_from_syspath");
 947    udev_enumerate_get_udev = (udev* (*)(udev_enumerate*))dlsym(h, "udev_enumerate_get_udev");
 948    udev_list_entry_get_name = (const char* (*)(udev_list_entry*))dlsym(h, "udev_list_entry_get_name");
 949    udev_device_get_devnode = (const char* (*)(udev_device*))dlsym(h, "udev_device_get_devnode");
 950    udev_enumerate_new = (udev_enumerate* (*)(udev*))dlsym(h, "udev_enumerate_new");
 951    udev_list_entry_get_next = (udev_list_entry* (*)(udev_list_entry*))dlsym(h, "udev_list_entry_get_next");
 952    udev_device_get_property_value = (const char* (*)(udev_device *, const char *))dlsym(h, "udev_device_get_property_value");
 953
 954    return true;
 955 }
 956                                                                         /*}}}*/
 957                                                                         /*{{{*/
 958 // convenience interface, this will just call ScanForRemovable
 959 vector<CdromDevice>
 960 pkgUdevCdromDevices::Scan()
 961 {
 962    bool CdromOnly = _config->FindB("APT::cdrom::CdromOnly", true);
 963    return ScanForRemovable(CdromOnly);
 964 }
 965                                                                         /*}}}*/
 966                                                                         /*{{{*/
 967 vector<CdromDevice>
 968 pkgUdevCdromDevices::ScanForRemovable(bool CdromOnly)
 969 {
 970    vector<CdromDevice> cdrom_devices;
 971    struct udev_enumerate *enumerate;
 972    struct udev_list_entry *l, *devices;
 973    struct udev *udev_ctx;
 974
 975    if(libudev_handle == NULL)
 976       return cdrom_devices;
 977
 978    udev_ctx = udev_new();
 979    enumerate = udev_enumerate_new (udev_ctx);
 980    if (CdromOnly)
 981       udev_enumerate_add_match_property(enumerate, "ID_CDROM", "1");
 982    else {
 983       udev_enumerate_add_match_sysattr(enumerate, "removable", "1");
 984    }
 985
 986    udev_enumerate_scan_devices (enumerate);
 987    devices = udev_enumerate_get_list_entry (enumerate);
 988    for (l = devices; l != NULL; l = udev_list_entry_get_next (l))
 989    {
 990       CdromDevice cdrom;
 991       struct udev_device *udevice;
 992       udevice = udev_device_new_from_syspath (udev_enumerate_get_udev (enumerate), udev_list_entry_get_name (l));
 993       if (udevice == NULL)
 994          continue;
 995       const char* devnode = udev_device_get_devnode(udevice);
 996
 997       // try fstab_dir first
 998       string mountpath;
 999       const char* mp = udev_device_get_property_value(udevice, "FSTAB_DIR");
1000       if (mp)
1001          mountpath = string(mp);
1002       else
1003          mountpath = FindMountPointForDevice(devnode);
1004
1005       // fill in the struct
1006       cdrom.DeviceName = string(devnode);
1007       if (mountpath != "") {
1008          cdrom.MountPath = mountpath;
1009          string s = mountpath;
1010          cdrom.Mounted = IsMounted(s);
1011       } else {
1012          cdrom.Mounted = false;
1013          cdrom.MountPath = "";
1014       }
1015       cdrom_devices.push_back(cdrom);
1016    }
1017    return cdrom_devices;
1018 }
1019                                                                         /*}}}*/
1020
1021 pkgUdevCdromDevices::~pkgUdevCdromDevices()                             /*{{{*/
1022 {
1023    if (libudev_handle != NULL)
1024       dlclose(libudev_handle);
1025 }
1026                                                                         /*}}}*/