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