apt-pkg/deb/dpkgpm.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: dpkgpm.cc,v 1.28 2004/01/27 02:25:01 mdz Exp $
   4 /* ######################################################################
   5
   6    DPKG Package Manager - Provide an interface to dpkg
   7
   8    ##################################################################### */
   9                                                                         /*}}}*/
  10 // Includes                                                             /*{{{*/
  11 #include <config.h>
  12
  13 #include <apt-pkg/cachefile.h>
  14 #include <apt-pkg/configuration.h>
  15 #include <apt-pkg/depcache.h>
  16 #include <apt-pkg/dpkgpm.h>
  17 #include <apt-pkg/error.h>
  18 #include <apt-pkg/fileutl.h>
  19 #include <apt-pkg/install-progress.h>
  20 #include <apt-pkg/packagemanager.h>
  21 #include <apt-pkg/strutl.h>
  22 #include <apt-pkg/cacheiterators.h>
  23 #include <apt-pkg/macros.h>
  24 #include <apt-pkg/pkgcache.h>
  25
  26 #include <errno.h>
  27 #include <fcntl.h>
  28 #include <grp.h>
  29 #include <pwd.h>
  30 #include <signal.h>
  31 #include <stddef.h>
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <sys/ioctl.h>
  35 #include <sys/select.h>
  36 #include <sys/stat.h>
  37 #include <sys/time.h>
  38 #include <sys/wait.h>
  39 #include <termios.h>
  40 #include <time.h>
  41 #include <unistd.h>
  42 #include <algorithm>
  43 #include <cstring>
  44 #include <iostream>
  45 #include <map>
  46 #include <set>
  47 #include <string>
  48 #include <utility>
  49 #include <vector>
  50
  51 #include <apti18n.h>
  52                                                                         /*}}}*/
  53
  54 using namespace std;
  55
  56 APT_PURE static unsigned int
  57 EnvironmentSize()
  58 {
  59   unsigned int size = 0;
  60   char **envp = environ;
  61
  62   while (*envp != NULL)
  63     size += strlen (*envp++) + 1;
  64
  65   return size;
  66 }
  67
  68 class pkgDPkgPMPrivate
  69 {
  70 public:
  71    pkgDPkgPMPrivate() : stdin_is_dev_null(false), dpkgbuf_pos(0),
  72                         term_out(NULL), history_out(NULL),
  73                         progress(NULL), tt_is_valid(false), master(-1),
  74                         slave(NULL), protect_slave_from_dying(-1),
  75                         direct_stdin(false)
  76    {
  77       dpkgbuf[0] = '\0';
  78    }
  79    ~pkgDPkgPMPrivate()
  80    {
  81    }
  82    bool stdin_is_dev_null;
  83    // the buffer we use for the dpkg status-fd reading
  84    char dpkgbuf[1024];
  85    int dpkgbuf_pos;
  86    FILE *term_out;
  87    FILE *history_out;
  88    string dpkg_error;
  89    APT::Progress::PackageManager *progress;
  90
  91    // pty stuff
  92    struct termios tt;
  93    bool tt_is_valid;
  94    int master;
  95    char * slave;
  96    int protect_slave_from_dying;
  97
  98    // signals
  99    sigset_t sigmask;
 100    sigset_t original_sigmask;
 101
 102    bool direct_stdin;
 103 };
 104
 105 namespace
 106 {
 107   // Maps the dpkg "processing" info to human readable names.  Entry 0
 108   // of each array is the key, entry 1 is the value.
 109   const std::pair<const char *, const char *> PackageProcessingOps[] = {
 110     std::make_pair("install",   N_("Installing %s")),
 111     std::make_pair("configure", N_("Configuring %s")),
 112     std::make_pair("remove",    N_("Removing %s")),
 113     std::make_pair("purge",    N_("Completely removing %s")),
 114     std::make_pair("disappear", N_("Noting disappearance of %s")),
 115     std::make_pair("trigproc",  N_("Running post-installation trigger %s"))
 116   };
 117
 118   const std::pair<const char *, const char *> * const PackageProcessingOpsBegin = PackageProcessingOps;
 119   const std::pair<const char *, const char *> * const PackageProcessingOpsEnd   = PackageProcessingOps + sizeof(PackageProcessingOps) / sizeof(PackageProcessingOps[0]);
 120
 121   // Predicate to test whether an entry in the PackageProcessingOps
 122   // array matches a string.
 123   class MatchProcessingOp
 124   {
 125     const char *target;
 126
 127   public:
 128     MatchProcessingOp(const char *the_target)
 129       : target(the_target)
 130     {
 131     }
 132
 133     bool operator()(const std::pair<const char *, const char *> &pair) const
 134     {
 135       return strcmp(pair.first, target) == 0;
 136     }
 137   };
 138 }
 139
 140 /* helper function to ionice the given PID
 141
 142  there is no C header for ionice yet - just the syscall interface
 143  so we use the binary from util-linux
 144 */
 145 static bool
 146 ionice(int PID)
 147 {
 148    if (!FileExists("/usr/bin/ionice"))
 149       return false;
 150    pid_t Process = ExecFork();
 151    if (Process == 0)
 152    {
 153       char buf[32];
 154       snprintf(buf, sizeof(buf), "-p%d", PID);
 155       const char *Args[4];
 156       Args[0] = "/usr/bin/ionice";
 157       Args[1] = "-c3";
 158       Args[2] = buf;
 159       Args[3] = 0;
 160       execv(Args[0], (char **)Args);
 161    }
 162    return ExecWait(Process, "ionice");
 163 }
 164
 165 static std::string getDpkgExecutable()
 166 {
 167    string Tmp = _config->Find("Dir::Bin::dpkg","dpkg");
 168    string const dpkgChrootDir = _config->FindDir("DPkg::Chroot-Directory", "/");
 169    size_t dpkgChrootLen = dpkgChrootDir.length();
 170    if (dpkgChrootDir != "/" && Tmp.find(dpkgChrootDir) == 0)
 171    {
 172       if (dpkgChrootDir[dpkgChrootLen - 1] == '/')
 173          --dpkgChrootLen;
 174       Tmp = Tmp.substr(dpkgChrootLen);
 175    }
 176    return Tmp;
 177 }
 178
 179 // dpkgChrootDirectory - chrooting for dpkg if needed                   /*{{{*/
 180 static void dpkgChrootDirectory()
 181 {
 182    std::string const chrootDir = _config->FindDir("DPkg::Chroot-Directory");
 183    if (chrootDir == "/")
 184       return;
 185    std::cerr << "Chrooting into " << chrootDir << std::endl;
 186    if (chroot(chrootDir.c_str()) != 0)
 187       _exit(100);
 188    if (chdir("/") != 0)
 189       _exit(100);
 190 }
 191                                                                         /*}}}*/
 192
 193
 194 // FindNowVersion - Helper to find a Version in "now" state     /*{{{*/
 195 // ---------------------------------------------------------------------
 196 /* This is helpful when a package is no longer installed but has residual
 197  * config files
 198  */
 199 static
 200 pkgCache::VerIterator FindNowVersion(const pkgCache::PkgIterator &Pkg)
 201 {
 202    pkgCache::VerIterator Ver;
 203    for (Ver = Pkg.VersionList(); Ver.end() == false; ++Ver)
 204       for (pkgCache::VerFileIterator Vf = Ver.FileList(); Vf.end() == false; ++Vf)
 205          for (pkgCache::PkgFileIterator F = Vf.File(); F.end() == false; ++F)
 206          {
 207             if (F.Archive() != 0 && strcmp(F.Archive(), "now") == 0)
 208                return Ver;
 209          }
 210    return Ver;
 211 }
 212                                                                         /*}}}*/
 213
 214 // DPkgPM::pkgDPkgPM - Constructor                                      /*{{{*/
 215 // ---------------------------------------------------------------------
 216 /* */
 217 pkgDPkgPM::pkgDPkgPM(pkgDepCache *Cache)
 218    : pkgPackageManager(Cache),d(new pkgDPkgPMPrivate()), pkgFailures(0), PackagesDone(0), PackagesTotal(0)
 219 {
 220 }
 221                                                                         /*}}}*/
 222 // DPkgPM::pkgDPkgPM - Destructor                                       /*{{{*/
 223 // ---------------------------------------------------------------------
 224 /* */
 225 pkgDPkgPM::~pkgDPkgPM()
 226 {
 227    delete d;
 228 }
 229                                                                         /*}}}*/
 230 // DPkgPM::Install - Install a package                                  /*{{{*/
 231 // ---------------------------------------------------------------------
 232 /* Add an install operation to the sequence list */
 233 bool pkgDPkgPM::Install(PkgIterator Pkg,string File)
 234 {
 235    if (File.empty() == true || Pkg.end() == true)
 236       return _error->Error("Internal Error, No file name for %s",Pkg.FullName().c_str());
 237
 238    // If the filename string begins with DPkg::Chroot-Directory, return the
 239    // substr that is within the chroot so dpkg can access it.
 240    string const chrootdir = _config->FindDir("DPkg::Chroot-Directory","/");
 241    if (chrootdir != "/" && File.find(chrootdir) == 0)
 242    {
 243       size_t len = chrootdir.length();
 244       if (chrootdir.at(len - 1) == '/')
 245         len--;
 246       List.push_back(Item(Item::Install,Pkg,File.substr(len)));
 247    }
 248    else
 249       List.push_back(Item(Item::Install,Pkg,File));
 250
 251    return true;
 252 }
 253                                                                         /*}}}*/
 254 // DPkgPM::Configure - Configure a package                              /*{{{*/
 255 // ---------------------------------------------------------------------
 256 /* Add a configure operation to the sequence list */
 257 bool pkgDPkgPM::Configure(PkgIterator Pkg)
 258 {
 259    if (Pkg.end() == true)
 260       return false;
 261
 262    List.push_back(Item(Item::Configure, Pkg));
 263
 264    // Use triggers for config calls if we configure "smart"
 265    // as otherwise Pre-Depends will not be satisfied, see #526774
 266    if (_config->FindB("DPkg::TriggersPending", false) == true)
 267       List.push_back(Item(Item::TriggersPending, PkgIterator()));
 268
 269    return true;
 270 }
 271                                                                         /*}}}*/
 272 // DPkgPM::Remove - Remove a package                                    /*{{{*/
 273 // ---------------------------------------------------------------------
 274 /* Add a remove operation to the sequence list */
 275 bool pkgDPkgPM::Remove(PkgIterator Pkg,bool Purge)
 276 {
 277    if (Pkg.end() == true)
 278       return false;
 279
 280    if (Purge == true)
 281       List.push_back(Item(Item::Purge,Pkg));
 282    else
 283       List.push_back(Item(Item::Remove,Pkg));
 284    return true;
 285 }
 286                                                                         /*}}}*/
 287 // DPkgPM::SendPkgInfo - Send info for install-pkgs hook                /*{{{*/
 288 // ---------------------------------------------------------------------
 289 /* This is part of the helper script communication interface, it sends
 290    very complete information down to the other end of the pipe.*/
 291 bool pkgDPkgPM::SendV2Pkgs(FILE *F)
 292 {
 293    return SendPkgsInfo(F, 2);
 294 }
 295 bool pkgDPkgPM::SendPkgsInfo(FILE * const F, unsigned int const &Version)
 296 {
 297    // This version of APT supports only v3, so don't sent higher versions
 298    if (Version <= 3)
 299       fprintf(F,"VERSION %u\n", Version);
 300    else
 301       fprintf(F,"VERSION 3\n");
 302
 303    /* Write out all of the configuration directives by walking the
 304       configuration tree */
 305    const Configuration::Item *Top = _config->Tree(0);
 306    for (; Top != 0;)
 307    {
 308       if (Top->Value.empty() == false)
 309       {
 310          fprintf(F,"%s=%s\n",
 311                  QuoteString(Top->FullTag(),"=\"\n").c_str(),
 312                  QuoteString(Top->Value,"\n").c_str());
 313       }
 314
 315       if (Top->Child != 0)
 316       {
 317          Top = Top->Child;
 318          continue;
 319       }
 320
 321       while (Top != 0 && Top->Next == 0)
 322          Top = Top->Parent;
 323       if (Top != 0)
 324          Top = Top->Next;
 325    }
 326    fprintf(F,"\n");
 327
 328    // Write out the package actions in order.
 329    for (vector<Item>::iterator I = List.begin(); I != List.end(); ++I)
 330    {
 331       if(I->Pkg.end() == true)
 332          continue;
 333
 334       pkgDepCache::StateCache &S = Cache[I->Pkg];
 335
 336       fprintf(F,"%s ",I->Pkg.Name());
 337
 338       // Current version which we are going to replace
 339       pkgCache::VerIterator CurVer = I->Pkg.CurrentVer();
 340       if (CurVer.end() == true && (I->Op == Item::Remove || I->Op == Item::Purge))
 341          CurVer = FindNowVersion(I->Pkg);
 342
 343       if (CurVer.end() == true)
 344       {
 345          if (Version <= 2)
 346             fprintf(F, "- ");
 347          else
 348             fprintf(F, "- - none ");
 349       }
 350       else
 351       {
 352          fprintf(F, "%s ", CurVer.VerStr());
 353          if (Version >= 3)
 354             fprintf(F, "%s %s ", CurVer.Arch(), CurVer.MultiArchType());
 355       }
 356
 357       // Show the compare operator between current and install version
 358       if (S.InstallVer != 0)
 359       {
 360          pkgCache::VerIterator const InstVer = S.InstVerIter(Cache);
 361          int Comp = 2;
 362          if (CurVer.end() == false)
 363             Comp = InstVer.CompareVer(CurVer);
 364          if (Comp < 0)
 365             fprintf(F,"> ");
 366          else if (Comp == 0)
 367             fprintf(F,"= ");
 368          else if (Comp > 0)
 369             fprintf(F,"< ");
 370          fprintf(F, "%s ", InstVer.VerStr());
 371          if (Version >= 3)
 372             fprintf(F, "%s %s ", InstVer.Arch(), InstVer.MultiArchType());
 373       }
 374       else
 375       {
 376          if (Version <= 2)
 377             fprintf(F, "> - ");
 378          else
 379             fprintf(F, "> - - none ");
 380       }
 381
 382       // Show the filename/operation
 383       if (I->Op == Item::Install)
 384       {
 385          // No errors here..
 386          if (I->File[0] != '/')
 387             fprintf(F,"**ERROR**\n");
 388          else
 389             fprintf(F,"%s\n",I->File.c_str());
 390       }
 391       else if (I->Op == Item::Configure)
 392          fprintf(F,"**CONFIGURE**\n");
 393       else if (I->Op == Item::Remove ||
 394           I->Op == Item::Purge)
 395          fprintf(F,"**REMOVE**\n");
 396
 397       if (ferror(F) != 0)
 398          return false;
 399    }
 400    return true;
 401 }
 402                                                                         /*}}}*/
 403 // DPkgPM::RunScriptsWithPkgs - Run scripts with package names on stdin /*{{{*/
 404 // ---------------------------------------------------------------------
 405 /* This looks for a list of scripts to run from the configuration file
 406    each one is run and is fed on standard input a list of all .deb files
 407    that are due to be installed. */
 408 bool pkgDPkgPM::RunScriptsWithPkgs(const char *Cnf)
 409 {
 410    bool result = true;
 411
 412    Configuration::Item const *Opts = _config->Tree(Cnf);
 413    if (Opts == 0 || Opts->Child == 0)
 414       return true;
 415    Opts = Opts->Child;
 416
 417    sighandler_t old_sigpipe = signal(SIGPIPE, SIG_IGN);
 418
 419    unsigned int Count = 1;
 420    for (; Opts != 0; Opts = Opts->Next, Count++)
 421    {
 422       if (Opts->Value.empty() == true)
 423          continue;
 424
 425       if(_config->FindB("Debug::RunScripts", false) == true)
 426          std::clog << "Running external script with list of all .deb file: '"
 427                    << Opts->Value << "'" << std::endl;
 428
 429       // Determine the protocol version
 430       string OptSec = Opts->Value;
 431       string::size_type Pos;
 432       if ((Pos = OptSec.find(' ')) == string::npos || Pos == 0)
 433          Pos = OptSec.length();
 434       OptSec = "DPkg::Tools::Options::" + string(Opts->Value.c_str(),Pos);
 435
 436       unsigned int Version = _config->FindI(OptSec+"::Version",1);
 437       unsigned int InfoFD = _config->FindI(OptSec + "::InfoFD", STDIN_FILENO);
 438
 439       // Create the pipes
 440       std::set<int> KeepFDs;
 441       MergeKeepFdsFromConfiguration(KeepFDs);
 442       int Pipes[2];
 443       if (pipe(Pipes) != 0) {
 444          result = _error->Errno("pipe","Failed to create IPC pipe to subprocess");
 445          break;
 446       }
 447       if (InfoFD != (unsigned)Pipes[0])
 448          SetCloseExec(Pipes[0],true);
 449       else
 450          KeepFDs.insert(Pipes[0]);
 451
 452
 453       SetCloseExec(Pipes[1],true);
 454
 455       // Purified Fork for running the script
 456       pid_t Process = ExecFork(KeepFDs);
 457       if (Process == 0)
 458       {
 459          // Setup the FDs
 460          dup2(Pipes[0], InfoFD);
 461          SetCloseExec(STDOUT_FILENO,false);
 462          SetCloseExec(STDIN_FILENO,false);
 463          SetCloseExec(STDERR_FILENO,false);
 464
 465          string hookfd;
 466          strprintf(hookfd, "%d", InfoFD);
 467          setenv("APT_HOOK_INFO_FD", hookfd.c_str(), 1);
 468
 469          dpkgChrootDirectory();
 470          const char *Args[4];
 471          Args[0] = "/bin/sh";
 472          Args[1] = "-c";
 473          Args[2] = Opts->Value.c_str();
 474          Args[3] = 0;
 475          execv(Args[0],(char **)Args);
 476          _exit(100);
 477       }
 478       close(Pipes[0]);
 479       FILE *F = fdopen(Pipes[1],"w");
 480       if (F == 0) {
 481          result = _error->Errno("fdopen","Faild to open new FD");
 482          break;
 483       }
 484
 485       // Feed it the filenames.
 486       if (Version <= 1)
 487       {
 488          for (vector<Item>::iterator I = List.begin(); I != List.end(); ++I)
 489          {
 490             // Only deal with packages to be installed from .deb
 491             if (I->Op != Item::Install)
 492                continue;
 493
 494             // No errors here..
 495             if (I->File[0] != '/')
 496                continue;
 497
 498             /* Feed the filename of each package that is pending install
 499                into the pipe. */
 500             fprintf(F,"%s\n",I->File.c_str());
 501             if (ferror(F) != 0)
 502                break;
 503          }
 504       }
 505       else
 506          SendPkgsInfo(F, Version);
 507
 508       fclose(F);
 509
 510       // Clean up the sub process
 511       if (ExecWait(Process,Opts->Value.c_str()) == false) {
 512          result = _error->Error("Failure running script %s",Opts->Value.c_str());
 513          break;
 514       }
 515    }
 516    signal(SIGPIPE, old_sigpipe);
 517
 518    return result;
 519 }
 520                                                                         /*}}}*/
 521 // DPkgPM::DoStdin - Read stdin and pass to master pty                  /*{{{*/
 522 // ---------------------------------------------------------------------
 523 /*
 524 */
 525 void pkgDPkgPM::DoStdin(int master)
 526 {
 527    unsigned char input_buf[256] = {0,};
 528    ssize_t len = read(STDIN_FILENO, input_buf, sizeof(input_buf));
 529    if (len)
 530       FileFd::Write(master, input_buf, len);
 531    else
 532       d->stdin_is_dev_null = true;
 533 }
 534                                                                         /*}}}*/
 535 // DPkgPM::DoTerminalPty - Read the terminal pty and write log          /*{{{*/
 536 // ---------------------------------------------------------------------
 537 /*
 538  * read the terminal pty and write log
 539  */
 540 void pkgDPkgPM::DoTerminalPty(int master)
 541 {
 542    unsigned char term_buf[1024] = {0,0, };
 543
 544    ssize_t len=read(master, term_buf, sizeof(term_buf));
 545    if(len == -1 && errno == EIO)
 546    {
 547       // this happens when the child is about to exit, we
 548       // give it time to actually exit, otherwise we run
 549       // into a race so we sleep for half a second.
 550       struct timespec sleepfor = { 0, 500000000 };
 551       nanosleep(&sleepfor, NULL);
 552       return;
 553    }
 554    if(len <= 0)
 555       return;
 556    FileFd::Write(1, term_buf, len);
 557    if(d->term_out)
 558       fwrite(term_buf, len, sizeof(char), d->term_out);
 559 }
 560                                                                         /*}}}*/
 561 // DPkgPM::ProcessDpkgStatusBuf                                         /*{{{*/
 562 // ---------------------------------------------------------------------
 563 /*
 564  */
 565 void pkgDPkgPM::ProcessDpkgStatusLine(char *line)
 566 {
 567    bool const Debug = _config->FindB("Debug::pkgDPkgProgressReporting",false);
 568    if (Debug == true)
 569       std::clog << "got from dpkg '" << line << "'" << std::endl;
 570
 571    /* dpkg sends strings like this:
 572       'status:   <pkg>: <pkg  qstate>'
 573       'status:   <pkg>:<arch>: <pkg  qstate>'
 574
 575       'processing: {install,upgrade,configure,remove,purge,disappear,trigproc}: pkg'
 576       'processing: {install,upgrade,configure,remove,purge,disappear,trigproc}: trigger'
 577    */
 578
 579    // we need to split on ": " (note the appended space) as the ':' is
 580    // part of the pkgname:arch information that dpkg sends
 581    //
 582    // A dpkg error message may contain additional ":" (like
 583    //  "failed in buffer_write(fd) (10, ret=-1): backend dpkg-deb ..."
 584    // so we need to ensure to not split too much
 585    std::vector<std::string> list = StringSplit(line, ": ", 4);
 586    if(list.size() < 3)
 587    {
 588       if (Debug == true)
 589          std::clog << "ignoring line: not enough ':'" << std::endl;
 590       return;
 591    }
 592
 593    // build the (prefix, pkgname, action) tuple, position of this
 594    // is different for "processing" or "status" messages
 595    std::string prefix = APT::String::Strip(list[0]);
 596    std::string pkgname;
 597    std::string action;
 598
 599    // "processing" has the form "processing: action: pkg or trigger"
 600    // with action = ["install", "upgrade", "configure", "remove", "purge",
 601    //                "disappear", "trigproc"]
 602    if (prefix == "processing")
 603    {
 604       pkgname = APT::String::Strip(list[2]);
 605       action = APT::String::Strip(list[1]);
 606       // we don't care for the difference (as dpkg doesn't really either)
 607       if (action == "upgrade")
 608          action = "install";
 609    }
 610    // "status" has the form: "status: pkg: state"
 611    // with state in ["half-installed", "unpacked", "half-configured",
 612    //                "installed", "config-files", "not-installed"]
 613    else if (prefix == "status")
 614    {
 615       pkgname = APT::String::Strip(list[1]);
 616       action = APT::String::Strip(list[2]);
 617    } else {
 618       if (Debug == true)
 619          std::clog << "unknown prefix '" << prefix << "'" << std::endl;
 620       return;
 621    }
 622
 623
 624    /* handle the special cases first:
 625
 626       errors look like this:
 627       'status: /var/cache/apt/archives/krecipes_0.8.1-0ubuntu1_i386.deb : error : trying to overwrite `/usr/share/doc/kde/HTML/en/krecipes/krectip.png', which is also in package krecipes-data
 628       and conffile-prompt like this
 629       'status:/etc/compiz.conf/compiz.conf :  conffile-prompt: 'current-conffile' 'new-conffile' useredited distedited
 630    */
 631    if (prefix == "status")
 632    {
 633       if(action == "error")
 634       {
 635          d->progress->Error(pkgname, PackagesDone, PackagesTotal,
 636                             list[3]);
 637          pkgFailures++;
 638          WriteApportReport(pkgname.c_str(), list[3].c_str());
 639          return;
 640       }
 641       else if(action == "conffile-prompt")
 642       {
 643          d->progress->ConffilePrompt(pkgname, PackagesDone, PackagesTotal,
 644                                      list[3]);
 645          return;
 646       }
 647    }
 648
 649    // at this point we know that we should have a valid pkgname, so build all
 650    // the info from it
 651
 652    // dpkg does not always send "pkgname:arch" so we add it here if needed
 653    if (pkgname.find(":") == std::string::npos)
 654    {
 655       // find the package in the group that is touched by dpkg
 656       // if there are multiple pkgs dpkg would send us a full pkgname:arch
 657       pkgCache::GrpIterator Grp = Cache.FindGrp(pkgname);
 658       if (Grp.end() == false)
 659       {
 660          pkgCache::PkgIterator P = Grp.PackageList();
 661          for (; P.end() != true; P = Grp.NextPkg(P))
 662          {
 663             if(Cache[P].Keep() == false || Cache[P].ReInstall() == true)
 664             {
 665                pkgname = P.FullName();
 666                break;
 667             }
 668          }
 669       }
 670    }
 671
 672    const char* const pkg = pkgname.c_str();
 673    std::string short_pkgname = StringSplit(pkgname, ":")[0];
 674    std::string arch = "";
 675    if (pkgname.find(":") != string::npos)
 676       arch = StringSplit(pkgname, ":")[1];
 677    std::string i18n_pkgname = pkgname;
 678    if (arch.size() != 0)
 679       strprintf(i18n_pkgname, "%s (%s)", short_pkgname.c_str(), arch.c_str());
 680
 681    // 'processing' from dpkg looks like
 682    // 'processing: action: pkg'
 683    if(prefix == "processing")
 684    {
 685       const std::pair<const char *, const char *> * const iter =
 686         std::find_if(PackageProcessingOpsBegin,
 687                      PackageProcessingOpsEnd,
 688                      MatchProcessingOp(action.c_str()));
 689       if(iter == PackageProcessingOpsEnd)
 690       {
 691          if (Debug == true)
 692             std::clog << "ignoring unknown action: " << action << std::endl;
 693          return;
 694       }
 695       std::string msg;
 696       strprintf(msg, _(iter->second), i18n_pkgname.c_str());
 697       d->progress->StatusChanged(pkgname, PackagesDone, PackagesTotal, msg);
 698
 699       // FIXME: this needs a muliarch testcase
 700       // FIXME2: is "pkgname" here reliable with dpkg only sending us
 701       //         short pkgnames?
 702       if (action == "disappear")
 703          handleDisappearAction(pkgname);
 704       return;
 705    }
 706
 707    if (prefix == "status")
 708    {
 709       vector<struct DpkgState> const &states = PackageOps[pkg];
 710       if(PackageOpsDone[pkg] < states.size())
 711       {
 712          char const * const next_action = states[PackageOpsDone[pkg]].state;
 713          if (next_action && Debug == true)
 714             std::clog << "(parsed from dpkg) pkg: " << short_pkgname
 715                << " action: " << action << " (expected: '" << next_action << "' "
 716                << PackageOpsDone[pkg] << " of " << states.size() << ")" << endl;
 717
 718          // check if the package moved to the next dpkg state
 719          if(next_action && (action == next_action))
 720          {
 721             // only read the translation if there is actually a next action
 722             char const * const translation = _(states[PackageOpsDone[pkg]].str);
 723
 724             // we moved from one dpkg state to a new one, report that
 725             ++PackageOpsDone[pkg];
 726             ++PackagesDone;
 727
 728             std::string msg;
 729             strprintf(msg, translation, i18n_pkgname.c_str());
 730             d->progress->StatusChanged(pkgname, PackagesDone, PackagesTotal, msg);
 731          }
 732       }
 733    }
 734 }
 735                                                                         /*}}}*/
 736 // DPkgPM::handleDisappearAction                                        /*{{{*/
 737 void pkgDPkgPM::handleDisappearAction(string const &pkgname)
 738 {
 739    pkgCache::PkgIterator Pkg = Cache.FindPkg(pkgname);
 740    if (unlikely(Pkg.end() == true))
 741       return;
 742
 743    // record the package name for display and stuff later
 744    disappearedPkgs.insert(Pkg.FullName(true));
 745
 746    // the disappeared package was auto-installed - nothing to do
 747    if ((Cache[Pkg].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto)
 748       return;
 749    pkgCache::VerIterator PkgVer = Cache[Pkg].InstVerIter(Cache);
 750    if (unlikely(PkgVer.end() == true))
 751       return;
 752    /* search in the list of dependencies for (Pre)Depends,
 753       check if this dependency has a Replaces on our package
 754       and if so transfer the manual installed flag to it */
 755    for (pkgCache::DepIterator Dep = PkgVer.DependsList(); Dep.end() != true; ++Dep)
 756    {
 757       if (Dep->Type != pkgCache::Dep::Depends &&
 758           Dep->Type != pkgCache::Dep::PreDepends)
 759          continue;
 760       pkgCache::PkgIterator Tar = Dep.TargetPkg();
 761       if (unlikely(Tar.end() == true))
 762          continue;
 763       // the package is already marked as manual
 764       if ((Cache[Tar].Flags & pkgCache::Flag::Auto) != pkgCache::Flag::Auto)
 765          continue;
 766       pkgCache::VerIterator TarVer =  Cache[Tar].InstVerIter(Cache);
 767       if (TarVer.end() == true)
 768          continue;
 769       for (pkgCache::DepIterator Rep = TarVer.DependsList(); Rep.end() != true; ++Rep)
 770       {
 771          if (Rep->Type != pkgCache::Dep::Replaces)
 772             continue;
 773          if (Pkg != Rep.TargetPkg())
 774             continue;
 775          // okay, they are strongly connected - transfer manual-bit
 776          if (Debug == true)
 777             std::clog << "transfer manual-bit from disappeared »" << pkgname << "« to »" << Tar.FullName() << "«" << std::endl;
 778          Cache[Tar].Flags &= ~Flag::Auto;
 779          break;
 780       }
 781    }
 782 }
 783                                                                         /*}}}*/
 784 // DPkgPM::DoDpkgStatusFd                                               /*{{{*/
 785 // ---------------------------------------------------------------------
 786 /*
 787  */
 788 void pkgDPkgPM::DoDpkgStatusFd(int statusfd)
 789 {
 790    char *p, *q;
 791    int len;
 792
 793    len=read(statusfd, &d->dpkgbuf[d->dpkgbuf_pos], sizeof(d->dpkgbuf)-d->dpkgbuf_pos);
 794    d->dpkgbuf_pos += len;
 795    if(len <= 0)
 796       return;
 797
 798    // process line by line if we have a buffer
 799    p = q = d->dpkgbuf;
 800    while((q=(char*)memchr(p, '\n', d->dpkgbuf+d->dpkgbuf_pos-p)) != NULL)
 801    {
 802       *q = 0;
 803       ProcessDpkgStatusLine(p);
 804       p=q+1; // continue with next line
 805    }
 806
 807    // now move the unprocessed bits (after the final \n that is now a 0x0)
 808    // to the start and update d->dpkgbuf_pos
 809    p = (char*)memrchr(d->dpkgbuf, 0, d->dpkgbuf_pos);
 810    if(p == NULL)
 811       return;
 812
 813    // we are interessted in the first char *after* 0x0
 814    p++;
 815
 816    // move the unprocessed tail to the start and update pos
 817    memmove(d->dpkgbuf, p, p-d->dpkgbuf);
 818    d->dpkgbuf_pos = d->dpkgbuf+d->dpkgbuf_pos-p;
 819 }
 820                                                                         /*}}}*/
 821 // DPkgPM::WriteHistoryTag                                              /*{{{*/
 822 void pkgDPkgPM::WriteHistoryTag(string const &tag, string value)
 823 {
 824    size_t const length = value.length();
 825    if (length == 0)
 826       return;
 827    // poor mans rstrip(", ")
 828    if (value[length-2] == ',' && value[length-1] == ' ')
 829       value.erase(length - 2, 2);
 830    fprintf(d->history_out, "%s: %s\n", tag.c_str(), value.c_str());
 831 }                                                                       /*}}}*/
 832 // DPkgPM::OpenLog                                                      /*{{{*/
 833 bool pkgDPkgPM::OpenLog()
 834 {
 835    string const logdir = _config->FindDir("Dir::Log");
 836    if(CreateAPTDirectoryIfNeeded(logdir, logdir) == false)
 837       // FIXME: use a better string after freeze
 838       return _error->Error(_("Directory '%s' missing"), logdir.c_str());
 839
 840    // get current time
 841    char timestr[200];
 842    time_t const t = time(NULL);
 843    struct tm const * const tmp = localtime(&t);
 844    strftime(timestr, sizeof(timestr), "%F  %T", tmp);
 845
 846    // open terminal log
 847    string const logfile_name = flCombine(logdir,
 848                                    _config->Find("Dir::Log::Terminal"));
 849    if (!logfile_name.empty())
 850    {
 851       d->term_out = fopen(logfile_name.c_str(),"a");
 852       if (d->term_out == NULL)
 853          return _error->WarningE("OpenLog", _("Could not open file '%s'"), logfile_name.c_str());
 854       setvbuf(d->term_out, NULL, _IONBF, 0);
 855       SetCloseExec(fileno(d->term_out), true);
 856       if (getuid() == 0) // if we aren't root, we can't chown a file, so don't try it
 857       {
 858          struct passwd *pw = getpwnam("root");
 859          struct group *gr = getgrnam("adm");
 860          if (pw != NULL && gr != NULL && chown(logfile_name.c_str(), pw->pw_uid, gr->gr_gid) != 0)
 861             _error->WarningE("OpenLog", "chown to root:adm of file %s failed", logfile_name.c_str());
 862       }
 863       if (chmod(logfile_name.c_str(), 0640) != 0)
 864          _error->WarningE("OpenLog", "chmod 0640 of file %s failed", logfile_name.c_str());
 865       fprintf(d->term_out, "\nLog started: %s\n", timestr);
 866    }
 867
 868    // write your history
 869    string const history_name = flCombine(logdir,
 870                                    _config->Find("Dir::Log::History"));
 871    if (!history_name.empty())
 872    {
 873       d->history_out = fopen(history_name.c_str(),"a");
 874       if (d->history_out == NULL)
 875          return _error->WarningE("OpenLog", _("Could not open file '%s'"), history_name.c_str());
 876       SetCloseExec(fileno(d->history_out), true);
 877       chmod(history_name.c_str(), 0644);
 878       fprintf(d->history_out, "\nStart-Date: %s\n", timestr);
 879       string remove, purge, install, reinstall, upgrade, downgrade;
 880       for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
 881       {
 882          enum { CANDIDATE, CANDIDATE_AUTO, CURRENT_CANDIDATE, CURRENT } infostring;
 883          string *line = NULL;
 884          #define HISTORYINFO(X, Y) { line = &X; infostring = Y; }
 885          if (Cache[I].NewInstall() == true)
 886             HISTORYINFO(install, CANDIDATE_AUTO)
 887          else if (Cache[I].ReInstall() == true)
 888             HISTORYINFO(reinstall, CANDIDATE)
 889          else if (Cache[I].Upgrade() == true)
 890             HISTORYINFO(upgrade, CURRENT_CANDIDATE)
 891          else if (Cache[I].Downgrade() == true)
 892             HISTORYINFO(downgrade, CURRENT_CANDIDATE)
 893          else if (Cache[I].Delete() == true)
 894             HISTORYINFO((Cache[I].Purge() ? purge : remove), CURRENT)
 895          else
 896             continue;
 897          #undef HISTORYINFO
 898          line->append(I.FullName(false)).append(" (");
 899          switch (infostring) {
 900          case CANDIDATE: line->append(Cache[I].CandVersion); break;
 901          case CANDIDATE_AUTO:
 902             line->append(Cache[I].CandVersion);
 903             if ((Cache[I].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto)
 904                line->append(", automatic");
 905             break;
 906          case CURRENT_CANDIDATE: line->append(Cache[I].CurVersion).append(", ").append(Cache[I].CandVersion); break;
 907          case CURRENT: line->append(Cache[I].CurVersion); break;
 908          }
 909          line->append("), ");
 910       }
 911       if (_config->Exists("Commandline::AsString") == true)
 912          WriteHistoryTag("Commandline", _config->Find("Commandline::AsString"));
 913       WriteHistoryTag("Install", install);
 914       WriteHistoryTag("Reinstall", reinstall);
 915       WriteHistoryTag("Upgrade", upgrade);
 916       WriteHistoryTag("Downgrade",downgrade);
 917       WriteHistoryTag("Remove",remove);
 918       WriteHistoryTag("Purge",purge);
 919       fflush(d->history_out);
 920    }
 921
 922    return true;
 923 }
 924                                                                         /*}}}*/
 925 // DPkg::CloseLog                                                       /*{{{*/
 926 bool pkgDPkgPM::CloseLog()
 927 {
 928    char timestr[200];
 929    time_t t = time(NULL);
 930    struct tm *tmp = localtime(&t);
 931    strftime(timestr, sizeof(timestr), "%F  %T", tmp);
 932
 933    if(d->term_out)
 934    {
 935       fprintf(d->term_out, "Log ended: ");
 936       fprintf(d->term_out, "%s", timestr);
 937       fprintf(d->term_out, "\n");
 938       fclose(d->term_out);
 939    }
 940    d->term_out = NULL;
 941
 942    if(d->history_out)
 943    {
 944       if (disappearedPkgs.empty() == false)
 945       {
 946          string disappear;
 947          for (std::set<std::string>::const_iterator d = disappearedPkgs.begin();
 948               d != disappearedPkgs.end(); ++d)
 949          {
 950             pkgCache::PkgIterator P = Cache.FindPkg(*d);
 951             disappear.append(*d);
 952             if (P.end() == true)
 953                disappear.append(", ");
 954             else
 955                disappear.append(" (").append(Cache[P].CurVersion).append("), ");
 956          }
 957          WriteHistoryTag("Disappeared", disappear);
 958       }
 959       if (d->dpkg_error.empty() == false)
 960          fprintf(d->history_out, "Error: %s\n", d->dpkg_error.c_str());
 961       fprintf(d->history_out, "End-Date: %s\n", timestr);
 962       fclose(d->history_out);
 963    }
 964    d->history_out = NULL;
 965
 966    return true;
 967 }
 968                                                                         /*}}}*/
 969                                                                         /*}}}*/
 970 /*{{{*/
 971 // This implements a racy version of pselect for those architectures
 972 // that don't have a working implementation.
 973 // FIXME: Probably can be removed on Lenny+1
 974 static int racy_pselect(int nfds, fd_set *readfds, fd_set *writefds,
 975    fd_set *exceptfds, const struct timespec *timeout,
 976    const sigset_t *sigmask)
 977 {
 978    sigset_t origmask;
 979    struct timeval tv;
 980    int retval;
 981
 982    tv.tv_sec = timeout->tv_sec;
 983    tv.tv_usec = timeout->tv_nsec/1000;
 984
 985    sigprocmask(SIG_SETMASK, sigmask, &origmask);
 986    retval = select(nfds, readfds, writefds, exceptfds, &tv);
 987    sigprocmask(SIG_SETMASK, &origmask, 0);
 988    return retval;
 989 }
 990                                                                         /*}}}*/
 991
 992 // DPkgPM::BuildPackagesProgressMap                                     /*{{{*/
 993 void pkgDPkgPM::BuildPackagesProgressMap()
 994 {
 995    // map the dpkg states to the operations that are performed
 996    // (this is sorted in the same way as Item::Ops)
 997    static const struct DpkgState DpkgStatesOpMap[][7] = {
 998       // Install operation
 999       {
1000          {"half-installed", N_("Preparing %s")},
1001          {"unpacked", N_("Unpacking %s") },
1002          {NULL, NULL}
1003       },
1004       // Configure operation
1005       {
1006          {"unpacked",N_("Preparing to configure %s") },
1007          {"half-configured", N_("Configuring %s") },
1008          { "installed", N_("Installed %s")},
1009          {NULL, NULL}
1010       },
1011       // Remove operation
1012       {
1013          {"half-configured", N_("Preparing for removal of %s")},
1014          {"half-installed", N_("Removing %s")},
1015          {"config-files",  N_("Removed %s")},
1016          {NULL, NULL}
1017       },
1018       // Purge operation
1019       {
1020          {"config-files", N_("Preparing to completely remove %s")},
1021          {"not-installed", N_("Completely removed %s")},
1022          {NULL, NULL}
1023       },
1024    };
1025
1026    // init the PackageOps map, go over the list of packages that
1027    // that will be [installed|configured|removed|purged] and add
1028    // them to the PackageOps map (the dpkg states it goes through)
1029    // and the PackageOpsTranslations (human readable strings)
1030    for (vector<Item>::const_iterator I = List.begin(); I != List.end(); ++I)
1031    {
1032       if((*I).Pkg.end() == true)
1033          continue;
1034
1035       string const name = (*I).Pkg.FullName();
1036       PackageOpsDone[name] = 0;
1037       for(int i=0; (DpkgStatesOpMap[(*I).Op][i]).state != NULL; ++i)
1038       {
1039          PackageOps[name].push_back(DpkgStatesOpMap[(*I).Op][i]);
1040          PackagesTotal++;
1041       }
1042    }
1043    /* one extra: We don't want the progress bar to reach 100%, especially not
1044       if we call dpkg --configure --pending and process a bunch of triggers
1045       while showing 100%. Also, spindown takes a while, so never reaching 100%
1046       is way more correct than reaching 100% while still doing stuff even if
1047       doing it this way is slightly bending the rules */
1048    ++PackagesTotal;
1049 }
1050                                                                         /*}}}*/
1051 bool pkgDPkgPM::Go(int StatusFd)
1052 {
1053    APT::Progress::PackageManager *progress = NULL;
1054    if (StatusFd == -1)
1055       progress = APT::Progress::PackageManagerProgressFactory();
1056    else
1057       progress = new APT::Progress::PackageManagerProgressFd(StatusFd);
1058
1059    return Go(progress);
1060 }
1061
1062 void pkgDPkgPM::StartPtyMagic()
1063 {
1064    if (_config->FindB("Dpkg::Use-Pty", true) == false)
1065    {
1066       d->master = -1;
1067       if (d->slave != NULL)
1068          free(d->slave);
1069       d->slave = NULL;
1070       return;
1071    }
1072
1073    if (isatty(STDIN_FILENO) == 0)
1074       d->direct_stdin = true;
1075
1076    _error->PushToStack();
1077
1078    d->master = posix_openpt(O_RDWR | O_NOCTTY);
1079    if (d->master == -1)
1080       _error->Errno("posix_openpt", _("Can not write log (%s)"), _("Is /dev/pts mounted?"));
1081    else if (unlockpt(d->master) == -1)
1082       _error->Errno("unlockpt", "Unlocking the slave of master fd %d failed!", d->master);
1083    else
1084    {
1085       char const * const slave_name = ptsname(d->master);
1086       if (slave_name == NULL)
1087          _error->Errno("ptsname", "Getting name for slave of master fd %d failed!", d->master);
1088       else
1089       {
1090          d->slave = strdup(slave_name);
1091          if (d->slave == NULL)
1092             _error->Errno("strdup", "Copying name %s for slave of master fd %d failed!", slave_name, d->master);
1093          else if (grantpt(d->master) == -1)
1094             _error->Errno("grantpt", "Granting access to slave %s based on master fd %d failed!", slave_name, d->master);
1095          else if (tcgetattr(STDIN_FILENO, &d->tt) == 0)
1096          {
1097             d->tt_is_valid = true;
1098             struct termios raw_tt;
1099             // copy window size of stdout if its a 'good' terminal
1100             if (tcgetattr(STDOUT_FILENO, &raw_tt) == 0)
1101             {
1102                struct winsize win;
1103                if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) < 0)
1104                   _error->Errno("ioctl", "Getting TIOCGWINSZ from stdout failed!");
1105                if (ioctl(d->master, TIOCSWINSZ, &win) < 0)
1106                   _error->Errno("ioctl", "Setting TIOCSWINSZ for master fd %d failed!", d->master);
1107             }
1108             if (tcsetattr(d->master, TCSANOW, &d->tt) == -1)
1109                _error->Errno("tcsetattr", "Setting in Start via TCSANOW for master fd %d failed!", d->master);
1110
1111             raw_tt = d->tt;
1112             cfmakeraw(&raw_tt);
1113             raw_tt.c_lflag &= ~ECHO;
1114             raw_tt.c_lflag |= ISIG;
1115             // block SIGTTOU during tcsetattr to prevent a hang if
1116             // the process is a member of the background process group
1117             // http://www.opengroup.org/onlinepubs/000095399/functions/tcsetattr.html
1118             sigemptyset(&d->sigmask);
1119             sigaddset(&d->sigmask, SIGTTOU);
1120             sigprocmask(SIG_BLOCK,&d->sigmask, &d->original_sigmask);
1121             if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw_tt) == -1)
1122                _error->Errno("tcsetattr", "Setting in Start via TCSAFLUSH for stdin failed!");
1123             sigprocmask(SIG_SETMASK, &d->original_sigmask, NULL);
1124
1125          }
1126          if (d->slave != NULL)
1127          {
1128             /* on linux, closing (and later reopening) all references to the slave
1129                makes the slave a death end, so we open it here to have one open all
1130                the time. We could use this fd in SetupSlavePtyMagic() for linux, but
1131                on kfreebsd we get an incorrect ("step like") output then while it has
1132                no problem with closing all references… so to avoid platform specific
1133                code here we combine both and be happy once more */
1134             d->protect_slave_from_dying = open(d->slave, O_RDWR | O_CLOEXEC | O_NOCTTY);
1135          }
1136       }
1137    }
1138
1139    if (_error->PendingError() == true)
1140    {
1141       if (d->master != -1)
1142       {
1143          close(d->master);
1144          d->master = -1;
1145       }
1146       if (d->slave != NULL)
1147       {
1148          free(d->slave);
1149          d->slave = NULL;
1150       }
1151       _error->DumpErrors(std::cerr);
1152    }
1153    _error->RevertToStack();
1154 }
1155 void pkgDPkgPM::SetupSlavePtyMagic()
1156 {
1157    if(d->master == -1 || d->slave == NULL)
1158       return;
1159
1160    if (close(d->master) == -1)
1161       _error->FatalE("close", "Closing master %d in child failed!", d->master);
1162    d->master = -1;
1163    if (setsid() == -1)
1164       _error->FatalE("setsid", "Starting a new session for child failed!");
1165
1166    int const slaveFd = open(d->slave, O_RDWR | O_NOCTTY);
1167    if (slaveFd == -1)
1168       _error->FatalE("open", _("Can not write log (%s)"), _("Is /dev/pts mounted?"));
1169    else if (ioctl(slaveFd, TIOCSCTTY, 0) < 0)
1170       _error->FatalE("ioctl", "Setting TIOCSCTTY for slave fd %d failed!", slaveFd);
1171    else
1172    {
1173       unsigned short i = 0;
1174       if (d->direct_stdin == true)
1175          ++i;
1176       for (; i < 3; ++i)
1177          if (dup2(slaveFd, i) == -1)
1178             _error->FatalE("dup2", "Dupping %d to %d in child failed!", slaveFd, i);
1179
1180       if (d->tt_is_valid == true && tcsetattr(STDIN_FILENO, TCSANOW, &d->tt) < 0)
1181          _error->FatalE("tcsetattr", "Setting in Setup via TCSANOW for slave fd %d failed!", slaveFd);
1182    }
1183
1184    if (slaveFd != -1)
1185       close(slaveFd);
1186 }
1187 void pkgDPkgPM::StopPtyMagic()
1188 {
1189    if (d->slave != NULL)
1190       free(d->slave);
1191    d->slave = NULL;
1192    if (d->protect_slave_from_dying != -1)
1193    {
1194       close(d->protect_slave_from_dying);
1195       d->protect_slave_from_dying = -1;
1196    }
1197    if(d->master >= 0)
1198    {
1199       if (d->tt_is_valid == true && tcsetattr(STDIN_FILENO, TCSAFLUSH, &d->tt) == -1)
1200          _error->FatalE("tcsetattr", "Setting in Stop via TCSAFLUSH for stdin failed!");
1201       close(d->master);
1202       d->master = -1;
1203    }
1204 }
1205
1206 // DPkgPM::Go - Run the sequence                                        /*{{{*/
1207 // ---------------------------------------------------------------------
1208 /* This globs the operations and calls dpkg
1209  *
1210  * If it is called with a progress object apt will report the install
1211  * progress to this object. It maps the dpkg states a package goes
1212  * through to human readable (and i10n-able)
1213  * names and calculates a percentage for each step.
1214  */
1215 bool pkgDPkgPM::Go(APT::Progress::PackageManager *progress)
1216 {
1217    pkgPackageManager::SigINTStop = false;
1218    d->progress = progress;
1219
1220    // Generate the base argument list for dpkg
1221    unsigned long StartSize = 0;
1222    std::vector<const char *> Args;
1223    std::string DpkgExecutable = getDpkgExecutable();
1224    Args.push_back(DpkgExecutable.c_str());
1225    StartSize += DpkgExecutable.length();
1226
1227    // Stick in any custom dpkg options
1228    Configuration::Item const *Opts = _config->Tree("DPkg::Options");
1229    if (Opts != 0)
1230    {
1231       Opts = Opts->Child;
1232       for (; Opts != 0; Opts = Opts->Next)
1233       {
1234          if (Opts->Value.empty() == true)
1235             continue;
1236          Args.push_back(Opts->Value.c_str());
1237          StartSize += Opts->Value.length();
1238       }
1239    }
1240
1241    size_t const BaseArgs = Args.size();
1242    // we need to detect if we can qualify packages with the architecture or not
1243    Args.push_back("--assert-multi-arch");
1244    Args.push_back(NULL);
1245
1246    pid_t dpkgAssertMultiArch = ExecFork();
1247    if (dpkgAssertMultiArch == 0)
1248    {
1249       dpkgChrootDirectory();
1250       // redirect everything to the ultimate sink as we only need the exit-status
1251       int const nullfd = open("/dev/null", O_RDONLY);
1252       dup2(nullfd, STDIN_FILENO);
1253       dup2(nullfd, STDOUT_FILENO);
1254       dup2(nullfd, STDERR_FILENO);
1255       execvp(Args[0], (char**) &Args[0]);
1256       _error->WarningE("dpkgGo", "Can't detect if dpkg supports multi-arch!");
1257       _exit(2);
1258    }
1259
1260    fd_set rfds;
1261    struct timespec tv;
1262
1263    // FIXME: do we really need this limit when we have MaxArgBytes?
1264    unsigned int const MaxArgs = _config->FindI("Dpkg::MaxArgs",32*1024);
1265
1266    // try to figure out the max environment size
1267    int OSArgMax = sysconf(_SC_ARG_MAX);
1268    if(OSArgMax < 0)
1269       OSArgMax = 32*1024;
1270    OSArgMax -= EnvironmentSize() - 2*1024;
1271    unsigned int const MaxArgBytes = _config->FindI("Dpkg::MaxArgBytes", OSArgMax);
1272    bool const NoTriggers = _config->FindB("DPkg::NoTriggers", false);
1273
1274    if (RunScripts("DPkg::Pre-Invoke") == false)
1275       return false;
1276
1277    if (RunScriptsWithPkgs("DPkg::Pre-Install-Pkgs") == false)
1278       return false;
1279
1280    // support subpressing of triggers processing for special
1281    // cases like d-i that runs the triggers handling manually
1282    bool const TriggersPending = _config->FindB("DPkg::TriggersPending", false);
1283    if (_config->FindB("DPkg::ConfigurePending", true) == true)
1284       List.push_back(Item(Item::ConfigurePending, PkgIterator()));
1285
1286    // for the progress
1287    BuildPackagesProgressMap();
1288
1289    d->stdin_is_dev_null = false;
1290
1291    // create log
1292    OpenLog();
1293
1294    bool dpkgMultiArch = false;
1295    if (dpkgAssertMultiArch > 0)
1296    {
1297       int Status = 0;
1298       while (waitpid(dpkgAssertMultiArch, &Status, 0) != dpkgAssertMultiArch)
1299       {
1300          if (errno == EINTR)
1301             continue;
1302          _error->WarningE("dpkgGo", _("Waited for %s but it wasn't there"), "dpkg --assert-multi-arch");
1303          break;
1304       }
1305       if (WIFEXITED(Status) == true && WEXITSTATUS(Status) == 0)
1306          dpkgMultiArch = true;
1307    }
1308
1309    // start pty magic before the loop
1310    StartPtyMagic();
1311
1312    // Tell the progress that its starting and fork dpkg
1313    d->progress->Start(d->master);
1314
1315    // this loop is runs once per dpkg operation
1316    vector<Item>::const_iterator I = List.begin();
1317    while (I != List.end())
1318    {
1319       // Do all actions with the same Op in one run
1320       vector<Item>::const_iterator J = I;
1321       if (TriggersPending == true)
1322          for (; J != List.end(); ++J)
1323          {
1324             if (J->Op == I->Op)
1325                continue;
1326             if (J->Op != Item::TriggersPending)
1327                break;
1328             vector<Item>::const_iterator T = J + 1;
1329             if (T != List.end() && T->Op == I->Op)
1330                continue;
1331             break;
1332          }
1333       else
1334          for (; J != List.end() && J->Op == I->Op; ++J)
1335             /* nothing */;
1336
1337       // keep track of allocated strings for multiarch package names
1338       std::vector<char *> Packages;
1339
1340       // start with the baseset of arguments
1341       unsigned long Size = StartSize;
1342       Args.erase(Args.begin() + BaseArgs, Args.end());
1343
1344       // Now check if we are within the MaxArgs limit
1345       //
1346       // this code below is problematic, because it may happen that
1347       // the argument list is split in a way that A depends on B
1348       // and they are in the same "--configure A B" run
1349       // - with the split they may now be configured in different
1350       //   runs, using Immediate-Configure-All can help prevent this.
1351       if (J - I > (signed)MaxArgs)
1352       {
1353          J = I + MaxArgs;
1354          unsigned long const size = MaxArgs + 10;
1355          Args.reserve(size);
1356          Packages.reserve(size);
1357       }
1358       else
1359       {
1360          unsigned long const size = (J - I) + 10;
1361          Args.reserve(size);
1362          Packages.reserve(size);
1363       }
1364
1365       int fd[2];
1366       if (pipe(fd) != 0)
1367          return _error->Errno("pipe","Failed to create IPC pipe to dpkg");
1368
1369 #define ADDARG(X) Args.push_back(X); Size += strlen(X)
1370 #define ADDARGC(X) Args.push_back(X); Size += sizeof(X) - 1
1371
1372       ADDARGC("--status-fd");
1373       char status_fd_buf[20];
1374       snprintf(status_fd_buf,sizeof(status_fd_buf),"%i", fd[1]);
1375       ADDARG(status_fd_buf);
1376       unsigned long const Op = I->Op;
1377
1378       switch (I->Op)
1379       {
1380          case Item::Remove:
1381          ADDARGC("--force-depends");
1382          ADDARGC("--force-remove-essential");
1383          ADDARGC("--remove");
1384          break;
1385
1386          case Item::Purge:
1387          ADDARGC("--force-depends");
1388          ADDARGC("--force-remove-essential");
1389          ADDARGC("--purge");
1390          break;
1391
1392          case Item::Configure:
1393          ADDARGC("--configure");
1394          break;
1395
1396          case Item::ConfigurePending:
1397          ADDARGC("--configure");
1398          ADDARGC("--pending");
1399          break;
1400
1401          case Item::TriggersPending:
1402          ADDARGC("--triggers-only");
1403          ADDARGC("--pending");
1404          break;
1405
1406          case Item::Install:
1407          ADDARGC("--unpack");
1408          ADDARGC("--auto-deconfigure");
1409          break;
1410       }
1411
1412       if (NoTriggers == true && I->Op != Item::TriggersPending &&
1413           I->Op != Item::ConfigurePending)
1414       {
1415          ADDARGC("--no-triggers");
1416       }
1417 #undef ADDARGC
1418
1419       // Write in the file or package names
1420       if (I->Op == Item::Install)
1421       {
1422          for (;I != J && Size < MaxArgBytes; ++I)
1423          {
1424             if (I->File[0] != '/')
1425                return _error->Error("Internal Error, Pathname to install is not absolute '%s'",I->File.c_str());
1426             Args.push_back(I->File.c_str());
1427             Size += I->File.length();
1428          }
1429       }
1430       else
1431       {
1432          string const nativeArch = _config->Find("APT::Architecture");
1433          unsigned long const oldSize = I->Op == Item::Configure ? Size : 0;
1434          for (;I != J && Size < MaxArgBytes; ++I)
1435          {
1436             if((*I).Pkg.end() == true)
1437                continue;
1438             if (I->Op == Item::Configure && disappearedPkgs.find(I->Pkg.FullName(true)) != disappearedPkgs.end())
1439                continue;
1440             // We keep this here to allow "smooth" transitions from e.g. multiarch dpkg/ubuntu to dpkg/debian
1441             if (dpkgMultiArch == false && (I->Pkg.Arch() == nativeArch ||
1442                                            strcmp(I->Pkg.Arch(), "all") == 0 ||
1443                                            strcmp(I->Pkg.Arch(), "none") == 0))
1444             {
1445                char const * const name = I->Pkg.Name();
1446                ADDARG(name);
1447             }
1448             else
1449             {
1450                pkgCache::VerIterator PkgVer;
1451                std::string name = I->Pkg.Name();
1452                if (Op == Item::Remove || Op == Item::Purge)
1453                {
1454                   PkgVer = I->Pkg.CurrentVer();
1455                   if(PkgVer.end() == true)
1456                      PkgVer = FindNowVersion(I->Pkg);
1457                }
1458                else
1459                   PkgVer = Cache[I->Pkg].InstVerIter(Cache);
1460                if (strcmp(I->Pkg.Arch(), "none") == 0)
1461                   ; // never arch-qualify a package without an arch
1462                else if (PkgVer.end() == false)
1463                   name.append(":").append(PkgVer.Arch());
1464                else
1465                   _error->Warning("Can not find PkgVer for '%s'", name.c_str());
1466                char * const fullname = strdup(name.c_str());
1467                Packages.push_back(fullname);
1468                ADDARG(fullname);
1469             }
1470          }
1471          // skip configure action if all sheduled packages disappeared
1472          if (oldSize == Size)
1473             continue;
1474       }
1475 #undef ADDARG
1476
1477       J = I;
1478
1479       if (_config->FindB("Debug::pkgDPkgPM",false) == true)
1480       {
1481          for (std::vector<const char *>::const_iterator a = Args.begin();
1482               a != Args.end(); ++a)
1483             clog << *a << ' ';
1484          clog << endl;
1485          for (std::vector<char *>::const_iterator p = Packages.begin();
1486                p != Packages.end(); ++p)
1487             free(*p);
1488          Packages.clear();
1489          continue;
1490       }
1491       Args.push_back(NULL);
1492
1493       cout << flush;
1494       clog << flush;
1495       cerr << flush;
1496
1497       /* Mask off sig int/quit. We do this because dpkg also does when
1498          it forks scripts. What happens is that when you hit ctrl-c it sends
1499          it to all processes in the group. Since dpkg ignores the signal
1500          it doesn't die but we do! So we must also ignore it */
1501       sighandler_t old_SIGQUIT = signal(SIGQUIT,SIG_IGN);
1502       sighandler_t old_SIGINT = signal(SIGINT,SigINT);
1503
1504       // Check here for any SIGINT
1505       if (pkgPackageManager::SigINTStop && (Op == Item::Remove || Op == Item::Purge || Op == Item::Install))
1506          break;
1507
1508
1509       // ignore SIGHUP as well (debian #463030)
1510       sighandler_t old_SIGHUP = signal(SIGHUP,SIG_IGN);
1511
1512       // now run dpkg
1513       d->progress->StartDpkg();
1514       std::set<int> KeepFDs;
1515       KeepFDs.insert(fd[1]);
1516       MergeKeepFdsFromConfiguration(KeepFDs);
1517       pid_t Child = ExecFork(KeepFDs);
1518       if (Child == 0)
1519       {
1520          // This is the child
1521          SetupSlavePtyMagic();
1522          close(fd[0]); // close the read end of the pipe
1523
1524          dpkgChrootDirectory();
1525
1526          if (chdir(_config->FindDir("DPkg::Run-Directory","/").c_str()) != 0)
1527             _exit(100);
1528
1529          if (_config->FindB("DPkg::FlushSTDIN",true) == true && isatty(STDIN_FILENO))
1530          {
1531             int Flags;
1532             int dummy = 0;
1533             if ((Flags = fcntl(STDIN_FILENO,F_GETFL,dummy)) < 0)
1534                _exit(100);
1535
1536             // Discard everything in stdin before forking dpkg
1537             if (fcntl(STDIN_FILENO,F_SETFL,Flags | O_NONBLOCK) < 0)
1538                _exit(100);
1539
1540             while (read(STDIN_FILENO,&dummy,1) == 1);
1541
1542             if (fcntl(STDIN_FILENO,F_SETFL,Flags & (~(long)O_NONBLOCK)) < 0)
1543                _exit(100);
1544          }
1545
1546          execvp(Args[0], (char**) &Args[0]);
1547          cerr << "Could not exec dpkg!" << endl;
1548          _exit(100);
1549       }
1550
1551       // apply ionice
1552       if (_config->FindB("DPkg::UseIoNice", false) == true)
1553          ionice(Child);
1554
1555       // Wait for dpkg
1556       int Status = 0;
1557
1558       // we read from dpkg here
1559       int const _dpkgin = fd[0];
1560       close(fd[1]);                        // close the write end of the pipe
1561
1562       // setups fds
1563       sigemptyset(&d->sigmask);
1564       sigprocmask(SIG_BLOCK,&d->sigmask,&d->original_sigmask);
1565
1566       /* free vectors (and therefore memory) as we don't need the included data anymore */
1567       for (std::vector<char *>::const_iterator p = Packages.begin();
1568            p != Packages.end(); ++p)
1569          free(*p);
1570       Packages.clear();
1571
1572       // the result of the waitpid call
1573       int res;
1574       int select_ret;
1575       while ((res=waitpid(Child,&Status, WNOHANG)) != Child) {
1576          if(res < 0) {
1577             // FIXME: move this to a function or something, looks ugly here
1578             // error handling, waitpid returned -1
1579             if (errno == EINTR)
1580                continue;
1581             RunScripts("DPkg::Post-Invoke");
1582
1583             // Restore sig int/quit
1584             signal(SIGQUIT,old_SIGQUIT);
1585             signal(SIGINT,old_SIGINT);
1586
1587             signal(SIGHUP,old_SIGHUP);
1588             return _error->Errno("waitpid","Couldn't wait for subprocess");
1589          }
1590
1591          // wait for input or output here
1592          FD_ZERO(&rfds);
1593          if (d->master >= 0 && d->direct_stdin == false && d->stdin_is_dev_null == false)
1594             FD_SET(STDIN_FILENO, &rfds);
1595          FD_SET(_dpkgin, &rfds);
1596          if(d->master >= 0)
1597             FD_SET(d->master, &rfds);
1598          tv.tv_sec = 0;
1599          tv.tv_nsec = d->progress->GetPulseInterval();
1600          select_ret = pselect(max(d->master, _dpkgin)+1, &rfds, NULL, NULL,
1601                               &tv, &d->original_sigmask);
1602          if (select_ret < 0 && (errno == EINVAL || errno == ENOSYS))
1603             select_ret = racy_pselect(max(d->master, _dpkgin)+1, &rfds, NULL,
1604                                       NULL, &tv, &d->original_sigmask);
1605          d->progress->Pulse();
1606          if (select_ret == 0)
1607             continue;
1608          else if (select_ret < 0 && errno == EINTR)
1609             continue;
1610          else if (select_ret < 0)
1611          {
1612             perror("select() returned error");
1613             continue;
1614          }
1615
1616          if(d->master >= 0 && FD_ISSET(d->master, &rfds))
1617             DoTerminalPty(d->master);
1618          if(d->master >= 0 && FD_ISSET(0, &rfds))
1619             DoStdin(d->master);
1620          if(FD_ISSET(_dpkgin, &rfds))
1621             DoDpkgStatusFd(_dpkgin);
1622       }
1623       close(_dpkgin);
1624
1625       // Restore sig int/quit
1626       signal(SIGQUIT,old_SIGQUIT);
1627       signal(SIGINT,old_SIGINT);
1628
1629       signal(SIGHUP,old_SIGHUP);
1630       // Check for an error code.
1631       if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
1632       {
1633          // if it was set to "keep-dpkg-runing" then we won't return
1634          // here but keep the loop going and just report it as a error
1635          // for later
1636          bool const stopOnError = _config->FindB("Dpkg::StopOnError",true);
1637
1638          if (WIFSIGNALED(Status) != 0 && WTERMSIG(Status) == SIGSEGV)
1639             strprintf(d->dpkg_error, "Sub-process %s received a segmentation fault.",Args[0]);
1640          else if (WIFEXITED(Status) != 0)
1641             strprintf(d->dpkg_error, "Sub-process %s returned an error code (%u)",Args[0],WEXITSTATUS(Status));
1642          else
1643             strprintf(d->dpkg_error, "Sub-process %s exited unexpectedly",Args[0]);
1644          _error->Error("%s", d->dpkg_error.c_str());
1645
1646          if(stopOnError)
1647             break;
1648       }
1649    }
1650    // dpkg is done at this point
1651    d->progress->Stop();
1652    StopPtyMagic();
1653    CloseLog();
1654
1655    if (pkgPackageManager::SigINTStop)
1656        _error->Warning(_("Operation was interrupted before it could finish"));
1657
1658    if (RunScripts("DPkg::Post-Invoke") == false)
1659       return false;
1660
1661    if (_config->FindB("Debug::pkgDPkgPM",false) == false)
1662    {
1663       std::string const oldpkgcache = _config->FindFile("Dir::cache::pkgcache");
1664       if (oldpkgcache.empty() == false && RealFileExists(oldpkgcache) == true &&
1665           unlink(oldpkgcache.c_str()) == 0)
1666       {
1667          std::string const srcpkgcache = _config->FindFile("Dir::cache::srcpkgcache");
1668          if (srcpkgcache.empty() == false && RealFileExists(srcpkgcache) == true)
1669          {
1670             _error->PushToStack();
1671             pkgCacheFile CacheFile;
1672             CacheFile.BuildCaches(NULL, true);
1673             _error->RevertToStack();
1674          }
1675       }
1676    }
1677
1678    Cache.writeStateFile(NULL);
1679    return d->dpkg_error.empty();
1680 }
1681
1682 void SigINT(int /*sig*/) {
1683    pkgPackageManager::SigINTStop = true;
1684 }
1685                                                                         /*}}}*/
1686 // pkgDpkgPM::Reset - Dump the contents of the command list             /*{{{*/
1687 // ---------------------------------------------------------------------
1688 /* */
1689 void pkgDPkgPM::Reset()
1690 {
1691    List.erase(List.begin(),List.end());
1692 }
1693                                                                         /*}}}*/
1694 // pkgDpkgPM::WriteApportReport - write out error report pkg failure    /*{{{*/
1695 // ---------------------------------------------------------------------
1696 /* */
1697 void pkgDPkgPM::WriteApportReport(const char *pkgpath, const char *errormsg)
1698 {
1699    // If apport doesn't exist or isn't installed do nothing
1700    // This e.g. prevents messages in 'universes' without apport
1701    pkgCache::PkgIterator apportPkg = Cache.FindPkg("apport");
1702    if (apportPkg.end() == true || apportPkg->CurrentVer == 0)
1703       return;
1704
1705    string pkgname, reportfile, pkgver, arch;
1706    string::size_type pos;
1707    FILE *report;
1708
1709    if (_config->FindB("Dpkg::ApportFailureReport", true) == false)
1710    {
1711       std::clog << "configured to not write apport reports" << std::endl;
1712       return;
1713    }
1714
1715    // only report the first errors
1716    if(pkgFailures > _config->FindI("APT::Apport::MaxReports", 3))
1717    {
1718       std::clog << _("No apport report written because MaxReports is reached already") << std::endl;
1719       return;
1720    }
1721
1722    // check if its not a follow up error
1723    const char *needle = dgettext("dpkg", "dependency problems - leaving unconfigured");
1724    if(strstr(errormsg, needle) != NULL) {
1725       std::clog << _("No apport report written because the error message indicates its a followup error from a previous failure.") << std::endl;
1726       return;
1727    }
1728
1729    // do not report disk-full failures
1730    if(strstr(errormsg, strerror(ENOSPC)) != NULL) {
1731       std::clog << _("No apport report written because the error message indicates a disk full error") << std::endl;
1732       return;
1733    }
1734
1735    // do not report out-of-memory failures
1736    if(strstr(errormsg, strerror(ENOMEM)) != NULL ||
1737       strstr(errormsg, "failed to allocate memory") != NULL) {
1738       std::clog << _("No apport report written because the error message indicates a out of memory error") << std::endl;
1739       return;
1740    }
1741
1742    // do not report bugs regarding inaccessible local files
1743    if(strstr(errormsg, strerror(ENOENT)) != NULL ||
1744       strstr(errormsg, "cannot access archive") != NULL) {
1745       std::clog << _("No apport report written because the error message indicates an issue on the local system") << std::endl;
1746       return;
1747    }
1748
1749    // do not report errors encountered when decompressing packages
1750    if(strstr(errormsg, "--fsys-tarfile returned error exit status 2") != NULL) {
1751       std::clog << _("No apport report written because the error message indicates an issue on the local system") << std::endl;
1752       return;
1753    }
1754
1755    // do not report dpkg I/O errors, this is a format string, so we compare
1756    // the prefix and the suffix of the error with the dpkg error message
1757    vector<string> io_errors;
1758    io_errors.push_back(string("failed to read"));
1759    io_errors.push_back(string("failed to write"));
1760    io_errors.push_back(string("failed to seek"));
1761    io_errors.push_back(string("unexpected end of file or stream"));
1762
1763    for (vector<string>::iterator I = io_errors.begin(); I != io_errors.end(); ++I)
1764    {
1765       vector<string> list = VectorizeString(dgettext("dpkg", (*I).c_str()), '%');
1766       if (list.size() > 1) {
1767          // we need to split %s, VectorizeString only allows char so we need
1768          // to kill the "s" manually
1769          if (list[1].size() > 1) {
1770             list[1].erase(0, 1);
1771             if(strstr(errormsg, list[0].c_str()) &&
1772                strstr(errormsg, list[1].c_str())) {
1773                std::clog << _("No apport report written because the error message indicates a dpkg I/O error") << std::endl;
1774                return;
1775             }
1776          }
1777       }
1778    }
1779
1780    // get the pkgname and reportfile
1781    pkgname = flNotDir(pkgpath);
1782    pos = pkgname.find('_');
1783    if(pos != string::npos)
1784       pkgname = pkgname.substr(0, pos);
1785
1786    // find the package versin and source package name
1787    pkgCache::PkgIterator Pkg = Cache.FindPkg(pkgname);
1788    if (Pkg.end() == true)
1789       return;
1790    pkgCache::VerIterator Ver = Cache.GetCandidateVer(Pkg);
1791    if (Ver.end() == true)
1792       return;
1793    pkgver = Ver.VerStr() == NULL ? "unknown" : Ver.VerStr();
1794
1795    // if the file exists already, we check:
1796    // - if it was reported already (touched by apport).
1797    //   If not, we do nothing, otherwise
1798    //    we overwrite it. This is the same behaviour as apport
1799    // - if we have a report with the same pkgversion already
1800    //   then we skip it
1801    reportfile = flCombine("/var/crash",pkgname+".0.crash");
1802    if(FileExists(reportfile))
1803    {
1804       struct stat buf;
1805       char strbuf[255];
1806
1807       // check atime/mtime
1808       stat(reportfile.c_str(), &buf);
1809       if(buf.st_mtime > buf.st_atime)
1810          return;
1811
1812       // check if the existing report is the same version
1813       report = fopen(reportfile.c_str(),"r");
1814       while(fgets(strbuf, sizeof(strbuf), report) != NULL)
1815       {
1816          if(strstr(strbuf,"Package:") == strbuf)
1817          {
1818             char pkgname[255], version[255];
1819             if(sscanf(strbuf, "Package: %254s %254s", pkgname, version) == 2)
1820                if(strcmp(pkgver.c_str(), version) == 0)
1821                {
1822                   fclose(report);
1823                   return;
1824                }
1825          }
1826       }
1827       fclose(report);
1828    }
1829
1830    // now write the report
1831    arch = _config->Find("APT::Architecture");
1832    report = fopen(reportfile.c_str(),"w");
1833    if(report == NULL)
1834       return;
1835    if(_config->FindB("DPkgPM::InitialReportOnly",false) == true)
1836       chmod(reportfile.c_str(), 0);
1837    else
1838       chmod(reportfile.c_str(), 0600);
1839    fprintf(report, "ProblemType: Package\n");
1840    fprintf(report, "Architecture: %s\n", arch.c_str());
1841    time_t now = time(NULL);
1842    fprintf(report, "Date: %s" , ctime(&now));
1843    fprintf(report, "Package: %s %s\n", pkgname.c_str(), pkgver.c_str());
1844    fprintf(report, "SourcePackage: %s\n", Ver.SourcePkgName());
1845    fprintf(report, "ErrorMessage:\n %s\n", errormsg);
1846
1847    // ensure that the log is flushed
1848    if(d->term_out)
1849       fflush(d->term_out);
1850
1851    // attach terminal log it if we have it
1852    string logfile_name = _config->FindFile("Dir::Log::Terminal");
1853    if (!logfile_name.empty())
1854    {
1855       FILE *log = NULL;
1856
1857       fprintf(report, "DpkgTerminalLog:\n");
1858       log = fopen(logfile_name.c_str(),"r");
1859       if(log != NULL)
1860       {
1861          char buf[1024];
1862          while( fgets(buf, sizeof(buf), log) != NULL)
1863             fprintf(report, " %s", buf);
1864          fprintf(report, " \n");
1865          fclose(log);
1866       }
1867    }
1868
1869    // attach history log it if we have it
1870    string histfile_name = _config->FindFile("Dir::Log::History");
1871    if (!histfile_name.empty())
1872    {
1873       fprintf(report, "DpkgHistoryLog:\n");
1874       FILE* log = fopen(histfile_name.c_str(),"r");
1875       if(log != NULL)
1876       {
1877          char buf[1024];
1878          while( fgets(buf, sizeof(buf), log) != NULL)
1879             fprintf(report, " %s", buf);
1880          fclose(log);
1881       }
1882    }
1883
1884    // log the ordering, see dpkgpm.h and the "Ops" enum there
1885    const char *ops_str[] = {
1886       "Install",
1887       "Configure",
1888       "Remove",
1889       "Purge",
1890       "ConfigurePending",
1891       "TriggersPending",
1892    };
1893    fprintf(report, "AptOrdering:\n");
1894    for (vector<Item>::iterator I = List.begin(); I != List.end(); ++I)
1895       if ((*I).Pkg != NULL)
1896          fprintf(report, " %s: %s\n", (*I).Pkg.Name(), ops_str[(*I).Op]);
1897       else
1898          fprintf(report, " %s: %s\n", "NULL", ops_str[(*I).Op]);
1899
1900    // attach dmesg log (to learn about segfaults)
1901    if (FileExists("/bin/dmesg"))
1902    {
1903       fprintf(report, "Dmesg:\n");
1904       FILE *log = popen("/bin/dmesg","r");
1905       if(log != NULL)
1906       {
1907          char buf[1024];
1908          while( fgets(buf, sizeof(buf), log) != NULL)
1909             fprintf(report, " %s", buf);
1910          pclose(log);
1911       }
1912    }
1913
1914    // attach df -l log (to learn about filesystem status)
1915    if (FileExists("/bin/df"))
1916    {
1917
1918       fprintf(report, "Df:\n");
1919       FILE *log = popen("/bin/df -l","r");
1920       if(log != NULL)
1921       {
1922          char buf[1024];
1923          while( fgets(buf, sizeof(buf), log) != NULL)
1924             fprintf(report, " %s", buf);
1925          pclose(log);
1926       }
1927    }
1928
1929    fclose(report);
1930
1931 }
1932                                                                         /*}}}*/