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 <apt-pkg/dpkgpm.h>
  12 #include <apt-pkg/error.h>
  13 #include <apt-pkg/configuration.h>
  14 #include <apt-pkg/depcache.h>
  15 #include <apt-pkg/pkgrecords.h>
  16 #include <apt-pkg/strutl.h>
  17 #include <apti18n.h>
  18 #include <apt-pkg/fileutl.h>
  19
  20 #include <unistd.h>
  21 #include <stdlib.h>
  22 #include <fcntl.h>
  23 #include <sys/select.h>
  24 #include <sys/stat.h>
  25 #include <sys/types.h>
  26 #include <sys/wait.h>
  27 #include <signal.h>
  28 #include <errno.h>
  29 #include <string.h>
  30 #include <stdio.h>
  31 #include <string.h>
  32 #include <algorithm>
  33 #include <sstream>
  34 #include <map>
  35
  36 #include <termios.h>
  37 #include <unistd.h>
  38 #include <sys/ioctl.h>
  39 #include <pty.h>
  40
  41 #include <config.h>
  42 #include <apti18n.h>
  43                                                                         /*}}}*/
  44
  45 using namespace std;
  46
  47 namespace
  48 {
  49   // Maps the dpkg "processing" info to human readable names.  Entry 0
  50   // of each array is the key, entry 1 is the value.
  51   const std::pair<const char *, const char *> PackageProcessingOps[] = {
  52     std::make_pair("install",   N_("Installing %s")),
  53     std::make_pair("configure", N_("Configuring %s")),
  54     std::make_pair("remove",    N_("Removing %s")),
  55     std::make_pair("purge",    N_("Completely removing %s")),
  56     std::make_pair("disappear", N_("Noting disappearance of %s")),
  57     std::make_pair("trigproc",  N_("Running post-installation trigger %s"))
  58   };
  59
  60   const std::pair<const char *, const char *> * const PackageProcessingOpsBegin = PackageProcessingOps;
  61   const std::pair<const char *, const char *> * const PackageProcessingOpsEnd   = PackageProcessingOps + sizeof(PackageProcessingOps) / sizeof(PackageProcessingOps[0]);
  62
  63   // Predicate to test whether an entry in the PackageProcessingOps
  64   // array matches a string.
  65   class MatchProcessingOp
  66   {
  67     const char *target;
  68
  69   public:
  70     MatchProcessingOp(const char *the_target)
  71       : target(the_target)
  72     {
  73     }
  74
  75     bool operator()(const std::pair<const char *, const char *> &pair) const
  76     {
  77       return strcmp(pair.first, target) == 0;
  78     }
  79   };
  80 }
  81
  82 /* helper function to ionice the given PID
  83
  84  there is no C header for ionice yet - just the syscall interface
  85  so we use the binary from util-linux
  86 */
  87 static bool
  88 ionice(int PID)
  89 {
  90    if (!FileExists("/usr/bin/ionice"))
  91       return false;
  92    pid_t Process = ExecFork();
  93    if (Process == 0)
  94    {
  95       char buf[32];
  96       snprintf(buf, sizeof(buf), "-p%d", PID);
  97       const char *Args[4];
  98       Args[0] = "/usr/bin/ionice";
  99       Args[1] = "-c3";
 100       Args[2] = buf;
 101       Args[3] = 0;
 102       execv(Args[0], (char **)Args);
 103    }
 104    return ExecWait(Process, "ionice");
 105 }
 106
 107 // DPkgPM::pkgDPkgPM - Constructor                                      /*{{{*/
 108 // ---------------------------------------------------------------------
 109 /* */
 110 pkgDPkgPM::pkgDPkgPM(pkgDepCache *Cache)
 111    : pkgPackageManager(Cache), dpkgbuf_pos(0),
 112      term_out(NULL), history_out(NULL), PackagesDone(0), PackagesTotal(0)
 113 {
 114 }
 115                                                                         /*}}}*/
 116 // DPkgPM::pkgDPkgPM - Destructor                                       /*{{{*/
 117 // ---------------------------------------------------------------------
 118 /* */
 119 pkgDPkgPM::~pkgDPkgPM()
 120 {
 121 }
 122                                                                         /*}}}*/
 123 // DPkgPM::Install - Install a package                                  /*{{{*/
 124 // ---------------------------------------------------------------------
 125 /* Add an install operation to the sequence list */
 126 bool pkgDPkgPM::Install(PkgIterator Pkg,string File)
 127 {
 128    if (File.empty() == true || Pkg.end() == true)
 129       return _error->Error("Internal Error, No file name for %s",Pkg.Name());
 130
 131    // If the filename string begins with DPkg::Chroot-Directory, return the
 132    // substr that is within the chroot so dpkg can access it.
 133    string const chrootdir = _config->FindDir("DPkg::Chroot-Directory","/");
 134    if (chrootdir != "/" && File.find(chrootdir) == 0)
 135    {
 136       size_t len = chrootdir.length();
 137       if (chrootdir.at(len - 1) == '/')
 138         len--;
 139       List.push_back(Item(Item::Install,Pkg,File.substr(len)));
 140    }
 141    else
 142       List.push_back(Item(Item::Install,Pkg,File));
 143
 144    return true;
 145 }
 146                                                                         /*}}}*/
 147 // DPkgPM::Configure - Configure a package                              /*{{{*/
 148 // ---------------------------------------------------------------------
 149 /* Add a configure operation to the sequence list */
 150 bool pkgDPkgPM::Configure(PkgIterator Pkg)
 151 {
 152    if (Pkg.end() == true)
 153       return false;
 154
 155    List.push_back(Item(Item::Configure, Pkg));
 156
 157    // Use triggers for config calls if we configure "smart"
 158    // as otherwise Pre-Depends will not be satisfied, see #526774
 159    if (_config->FindB("DPkg::TriggersPending", false) == true)
 160       List.push_back(Item(Item::TriggersPending, PkgIterator()));
 161
 162    return true;
 163 }
 164                                                                         /*}}}*/
 165 // DPkgPM::Remove - Remove a package                                    /*{{{*/
 166 // ---------------------------------------------------------------------
 167 /* Add a remove operation to the sequence list */
 168 bool pkgDPkgPM::Remove(PkgIterator Pkg,bool Purge)
 169 {
 170    if (Pkg.end() == true)
 171       return false;
 172
 173    if (Purge == true)
 174       List.push_back(Item(Item::Purge,Pkg));
 175    else
 176       List.push_back(Item(Item::Remove,Pkg));
 177    return true;
 178 }
 179                                                                         /*}}}*/
 180 // DPkgPM::SendV2Pkgs - Send version 2 package info                     /*{{{*/
 181 // ---------------------------------------------------------------------
 182 /* This is part of the helper script communication interface, it sends
 183    very complete information down to the other end of the pipe.*/
 184 bool pkgDPkgPM::SendV2Pkgs(FILE *F)
 185 {
 186    fprintf(F,"VERSION 2\n");
 187
 188    /* Write out all of the configuration directives by walking the
 189       configuration tree */
 190    const Configuration::Item *Top = _config->Tree(0);
 191    for (; Top != 0;)
 192    {
 193       if (Top->Value.empty() == false)
 194       {
 195          fprintf(F,"%s=%s\n",
 196                  QuoteString(Top->FullTag(),"=\"\n").c_str(),
 197                  QuoteString(Top->Value,"\n").c_str());
 198       }
 199
 200       if (Top->Child != 0)
 201       {
 202          Top = Top->Child;
 203          continue;
 204       }
 205
 206       while (Top != 0 && Top->Next == 0)
 207          Top = Top->Parent;
 208       if (Top != 0)
 209          Top = Top->Next;
 210    }
 211    fprintf(F,"\n");
 212
 213    // Write out the package actions in order.
 214    for (vector<Item>::iterator I = List.begin(); I != List.end(); I++)
 215    {
 216       if(I->Pkg.end() == true)
 217          continue;
 218
 219       pkgDepCache::StateCache &S = Cache[I->Pkg];
 220
 221       fprintf(F,"%s ",I->Pkg.Name());
 222       // Current version
 223       if (I->Pkg->CurrentVer == 0)
 224          fprintf(F,"- ");
 225       else
 226          fprintf(F,"%s ",I->Pkg.CurrentVer().VerStr());
 227
 228       // Show the compare operator
 229       // Target version
 230       if (S.InstallVer != 0)
 231       {
 232          int Comp = 2;
 233          if (I->Pkg->CurrentVer != 0)
 234             Comp = S.InstVerIter(Cache).CompareVer(I->Pkg.CurrentVer());
 235          if (Comp < 0)
 236             fprintf(F,"> ");
 237          if (Comp == 0)
 238             fprintf(F,"= ");
 239          if (Comp > 0)
 240             fprintf(F,"< ");
 241          fprintf(F,"%s ",S.InstVerIter(Cache).VerStr());
 242       }
 243       else
 244          fprintf(F,"> - ");
 245
 246       // Show the filename/operation
 247       if (I->Op == Item::Install)
 248       {
 249          // No errors here..
 250          if (I->File[0] != '/')
 251             fprintf(F,"**ERROR**\n");
 252          else
 253             fprintf(F,"%s\n",I->File.c_str());
 254       }
 255       if (I->Op == Item::Configure)
 256          fprintf(F,"**CONFIGURE**\n");
 257       if (I->Op == Item::Remove ||
 258           I->Op == Item::Purge)
 259          fprintf(F,"**REMOVE**\n");
 260
 261       if (ferror(F) != 0)
 262          return false;
 263    }
 264    return true;
 265 }
 266                                                                         /*}}}*/
 267 // DPkgPM::RunScriptsWithPkgs - Run scripts with package names on stdin /*{{{*/
 268 // ---------------------------------------------------------------------
 269 /* This looks for a list of scripts to run from the configuration file
 270    each one is run and is fed on standard input a list of all .deb files
 271    that are due to be installed. */
 272 bool pkgDPkgPM::RunScriptsWithPkgs(const char *Cnf)
 273 {
 274    Configuration::Item const *Opts = _config->Tree(Cnf);
 275    if (Opts == 0 || Opts->Child == 0)
 276       return true;
 277    Opts = Opts->Child;
 278
 279    unsigned int Count = 1;
 280    for (; Opts != 0; Opts = Opts->Next, Count++)
 281    {
 282       if (Opts->Value.empty() == true)
 283          continue;
 284
 285       // Determine the protocol version
 286       string OptSec = Opts->Value;
 287       string::size_type Pos;
 288       if ((Pos = OptSec.find(' ')) == string::npos || Pos == 0)
 289          Pos = OptSec.length();
 290       OptSec = "DPkg::Tools::Options::" + string(Opts->Value.c_str(),Pos);
 291
 292       unsigned int Version = _config->FindI(OptSec+"::Version",1);
 293
 294       // Create the pipes
 295       int Pipes[2];
 296       if (pipe(Pipes) != 0)
 297          return _error->Errno("pipe","Failed to create IPC pipe to subprocess");
 298       SetCloseExec(Pipes[0],true);
 299       SetCloseExec(Pipes[1],true);
 300
 301       // Purified Fork for running the script
 302       pid_t Process = ExecFork();
 303       if (Process == 0)
 304       {
 305          // Setup the FDs
 306          dup2(Pipes[0],STDIN_FILENO);
 307          SetCloseExec(STDOUT_FILENO,false);
 308          SetCloseExec(STDIN_FILENO,false);
 309          SetCloseExec(STDERR_FILENO,false);
 310
 311          const char *Args[4];
 312          Args[0] = "/bin/sh";
 313          Args[1] = "-c";
 314          Args[2] = Opts->Value.c_str();
 315          Args[3] = 0;
 316          execv(Args[0],(char **)Args);
 317          _exit(100);
 318       }
 319       close(Pipes[0]);
 320       FILE *F = fdopen(Pipes[1],"w");
 321       if (F == 0)
 322          return _error->Errno("fdopen","Faild to open new FD");
 323
 324       // Feed it the filenames.
 325       bool Die = false;
 326       if (Version <= 1)
 327       {
 328          for (vector<Item>::iterator I = List.begin(); I != List.end(); I++)
 329          {
 330             // Only deal with packages to be installed from .deb
 331             if (I->Op != Item::Install)
 332                continue;
 333
 334             // No errors here..
 335             if (I->File[0] != '/')
 336                continue;
 337
 338             /* Feed the filename of each package that is pending install
 339                into the pipe. */
 340             fprintf(F,"%s\n",I->File.c_str());
 341             if (ferror(F) != 0)
 342             {
 343                Die = true;
 344                break;
 345             }
 346          }
 347       }
 348       else
 349          Die = !SendV2Pkgs(F);
 350
 351       fclose(F);
 352
 353       // Clean up the sub process
 354       if (ExecWait(Process,Opts->Value.c_str()) == false)
 355          return _error->Error("Failure running script %s",Opts->Value.c_str());
 356    }
 357
 358    return true;
 359 }
 360                                                                         /*}}}*/
 361 // DPkgPM::DoStdin - Read stdin and pass to slave pty                   /*{{{*/
 362 // ---------------------------------------------------------------------
 363 /*
 364 */
 365 void pkgDPkgPM::DoStdin(int master)
 366 {
 367    unsigned char input_buf[256] = {0,};
 368    ssize_t len = read(0, input_buf, sizeof(input_buf));
 369    if (len)
 370       write(master, input_buf, len);
 371    else
 372       stdin_is_dev_null = true;
 373 }
 374                                                                         /*}}}*/
 375 // DPkgPM::DoTerminalPty - Read the terminal pty and write log          /*{{{*/
 376 // ---------------------------------------------------------------------
 377 /*
 378  * read the terminal pty and write log
 379  */
 380 void pkgDPkgPM::DoTerminalPty(int master)
 381 {
 382    unsigned char term_buf[1024] = {0,0, };
 383
 384    ssize_t len=read(master, term_buf, sizeof(term_buf));
 385    if(len == -1 && errno == EIO)
 386    {
 387       // this happens when the child is about to exit, we
 388       // give it time to actually exit, otherwise we run
 389       // into a race
 390       usleep(500000);
 391       return;
 392    }
 393    if(len <= 0)
 394       return;
 395    write(1, term_buf, len);
 396    if(term_out)
 397       fwrite(term_buf, len, sizeof(char), term_out);
 398 }
 399                                                                         /*}}}*/
 400 // DPkgPM::ProcessDpkgStatusBuf                                         /*{{{*/
 401 // ---------------------------------------------------------------------
 402 /*
 403  */
 404 void pkgDPkgPM::ProcessDpkgStatusLine(int OutStatusFd, char *line)
 405 {
 406    bool const Debug = _config->FindB("Debug::pkgDPkgProgressReporting",false);
 407    // the status we output
 408    ostringstream status;
 409
 410    if (Debug == true)
 411       std::clog << "got from dpkg '" << line << "'" << std::endl;
 412
 413
 414    /* dpkg sends strings like this:
 415       'status:   <pkg>:  <pkg  qstate>'
 416       errors look like this:
 417       '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
 418       and conffile-prompt like this
 419       'status: conffile-prompt: conffile : 'current-conffile' 'new-conffile' useredited distedited
 420
 421       Newer versions of dpkg sent also:
 422       'processing: install: pkg'
 423       'processing: configure: pkg'
 424       'processing: remove: pkg'
 425       'processing: purge: pkg'
 426       'processing: disappear: pkg'
 427       'processing: trigproc: trigger'
 428
 429    */
 430    char* list[6];
 431    //        dpkg sends multiline error messages sometimes (see
 432    //        #374195 for a example. we should support this by
 433    //        either patching dpkg to not send multiline over the
 434    //        statusfd or by rewriting the code here to deal with
 435    //        it. for now we just ignore it and not crash
 436    TokSplitString(':', line, list, sizeof(list)/sizeof(list[0]));
 437    if( list[0] == NULL || list[1] == NULL || list[2] == NULL)
 438    {
 439       if (Debug == true)
 440          std::clog << "ignoring line: not enough ':'" << std::endl;
 441       return;
 442    }
 443    const char* const pkg = list[1];
 444    const char* action = _strstrip(list[2]);
 445
 446    // 'processing' from dpkg looks like
 447    // 'processing: action: pkg'
 448    if(strncmp(list[0], "processing", strlen("processing")) == 0)
 449    {
 450       char s[200];
 451       const char* const pkg_or_trigger = _strstrip(list[2]);
 452       action = _strstrip( list[1]);
 453       const std::pair<const char *, const char *> * const iter =
 454         std::find_if(PackageProcessingOpsBegin,
 455                      PackageProcessingOpsEnd,
 456                      MatchProcessingOp(action));
 457       if(iter == PackageProcessingOpsEnd)
 458       {
 459          if (Debug == true)
 460             std::clog << "ignoring unknown action: " << action << std::endl;
 461          return;
 462       }
 463       snprintf(s, sizeof(s), _(iter->second), pkg_or_trigger);
 464
 465       status << "pmstatus:" << pkg_or_trigger
 466              << ":"  << (PackagesDone/float(PackagesTotal)*100.0)
 467              << ":" << s
 468              << endl;
 469       if(OutStatusFd > 0)
 470          write(OutStatusFd, status.str().c_str(), status.str().size());
 471       if (Debug == true)
 472          std::clog << "send: '" << status.str() << "'" << endl;
 473
 474       if (strncmp(action, "disappear", strlen("disappear")) == 0)
 475          handleDisappearAction(pkg_or_trigger);
 476       return;
 477    }
 478
 479    if(strncmp(action,"error",strlen("error")) == 0)
 480    {
 481       // urgs, sometime has ":" in its error string so that we
 482       // end up with the error message split between list[3]
 483       // and list[4], e.g. the message:
 484       // "failed in buffer_write(fd) (10, ret=-1): backend dpkg-deb ..."
 485       // concat them again
 486       if( list[4] != NULL )
 487          list[3][strlen(list[3])] = ':';
 488
 489       status << "pmerror:" << list[1]
 490              << ":"  << (PackagesDone/float(PackagesTotal)*100.0)
 491              << ":" << list[3]
 492              << endl;
 493       if(OutStatusFd > 0)
 494          write(OutStatusFd, status.str().c_str(), status.str().size());
 495       if (Debug == true)
 496          std::clog << "send: '" << status.str() << "'" << endl;
 497       pkgFailures++;
 498       WriteApportReport(list[1], list[3]);
 499       return;
 500    }
 501    else if(strncmp(action,"conffile",strlen("conffile")) == 0)
 502    {
 503       status << "pmconffile:" << list[1]
 504              << ":"  << (PackagesDone/float(PackagesTotal)*100.0)
 505              << ":" << list[3]
 506              << endl;
 507       if(OutStatusFd > 0)
 508          write(OutStatusFd, status.str().c_str(), status.str().size());
 509       if (Debug == true)
 510          std::clog << "send: '" << status.str() << "'" << endl;
 511       return;
 512    }
 513
 514    vector<struct DpkgState> const &states = PackageOps[pkg];
 515    const char *next_action = NULL;
 516    if(PackageOpsDone[pkg] < states.size())
 517       next_action = states[PackageOpsDone[pkg]].state;
 518    // check if the package moved to the next dpkg state
 519    if(next_action && (strcmp(action, next_action) == 0))
 520    {
 521       // only read the translation if there is actually a next
 522       // action
 523       const char *translation = _(states[PackageOpsDone[pkg]].str);
 524       char s[200];
 525       snprintf(s, sizeof(s), translation, pkg);
 526
 527       // we moved from one dpkg state to a new one, report that
 528       PackageOpsDone[pkg]++;
 529       PackagesDone++;
 530       // build the status str
 531       status << "pmstatus:" << pkg
 532              << ":"  << (PackagesDone/float(PackagesTotal)*100.0)
 533              << ":" << s
 534              << endl;
 535       if(OutStatusFd > 0)
 536          write(OutStatusFd, status.str().c_str(), status.str().size());
 537       if (Debug == true)
 538          std::clog << "send: '" << status.str() << "'" << endl;
 539    }
 540    if (Debug == true)
 541       std::clog << "(parsed from dpkg) pkg: " << pkg
 542                 << " action: " << action << endl;
 543 }
 544                                                                         /*}}}*/
 545 // DPkgPM::handleDisappearAction                                        /*{{{*/
 546 void pkgDPkgPM::handleDisappearAction(string const &pkgname)
 547 {
 548    // record the package name for display and stuff later
 549    disappearedPkgs.insert(pkgname);
 550
 551    pkgCache::PkgIterator Pkg = Cache.FindPkg(pkgname);
 552    if (unlikely(Pkg.end() == true))
 553       return;
 554    // the disappeared package was auto-installed - nothing to do
 555    if ((Cache[Pkg].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto)
 556       return;
 557    pkgCache::VerIterator PkgVer = Pkg.CurrentVer();
 558    if (unlikely(PkgVer.end() == true))
 559       return;
 560    /* search in the list of dependencies for (Pre)Depends,
 561       check if this dependency has a Replaces on our package
 562       and if so transfer the manual installed flag to it */
 563    for (pkgCache::DepIterator Dep = PkgVer.DependsList(); Dep.end() != true; ++Dep)
 564    {
 565       if (Dep->Type != pkgCache::Dep::Depends &&
 566           Dep->Type != pkgCache::Dep::PreDepends)
 567          continue;
 568       pkgCache::PkgIterator Tar = Dep.TargetPkg();
 569       if (unlikely(Tar.end() == true))
 570          continue;
 571       // the package is already marked as manual
 572       if ((Cache[Tar].Flags & pkgCache::Flag::Auto) != pkgCache::Flag::Auto)
 573          continue;
 574       pkgCache::VerIterator TarVer = Tar.CurrentVer();
 575       for (pkgCache::DepIterator Rep = TarVer.DependsList(); Rep.end() != true; ++Rep)
 576       {
 577          if (Rep->Type != pkgCache::Dep::Replaces)
 578             continue;
 579          if (Pkg != Rep.TargetPkg())
 580             continue;
 581          // okay, they are strongly connected - transfer manual-bit
 582          if (Debug == true)
 583             std::clog << "transfer manual-bit from disappeared »" << pkgname << "« to »" << Tar.FullName() << "«" << std::endl;
 584          Cache[Tar].Flags &= ~Flag::Auto;
 585          break;
 586       }
 587    }
 588 }
 589                                                                         /*}}}*/
 590 // DPkgPM::DoDpkgStatusFd                                               /*{{{*/
 591 // ---------------------------------------------------------------------
 592 /*
 593  */
 594 void pkgDPkgPM::DoDpkgStatusFd(int statusfd, int OutStatusFd)
 595 {
 596    char *p, *q;
 597    int len;
 598
 599    len=read(statusfd, &dpkgbuf[dpkgbuf_pos], sizeof(dpkgbuf)-dpkgbuf_pos);
 600    dpkgbuf_pos += len;
 601    if(len <= 0)
 602       return;
 603
 604    // process line by line if we have a buffer
 605    p = q = dpkgbuf;
 606    while((q=(char*)memchr(p, '\n', dpkgbuf+dpkgbuf_pos-p)) != NULL)
 607    {
 608       *q = 0;
 609       ProcessDpkgStatusLine(OutStatusFd, p);
 610       p=q+1; // continue with next line
 611    }
 612
 613    // now move the unprocessed bits (after the final \n that is now a 0x0)
 614    // to the start and update dpkgbuf_pos
 615    p = (char*)memrchr(dpkgbuf, 0, dpkgbuf_pos);
 616    if(p == NULL)
 617       return;
 618
 619    // we are interessted in the first char *after* 0x0
 620    p++;
 621
 622    // move the unprocessed tail to the start and update pos
 623    memmove(dpkgbuf, p, p-dpkgbuf);
 624    dpkgbuf_pos = dpkgbuf+dpkgbuf_pos-p;
 625 }
 626                                                                         /*}}}*/
 627 // DPkgPM::WriteHistoryTag                                              /*{{{*/
 628 void pkgDPkgPM::WriteHistoryTag(string const &tag, string value)
 629 {
 630    size_t const length = value.length();
 631    if (length == 0)
 632       return;
 633    // poor mans rstrip(", ")
 634    if (value[length-2] == ',' && value[length-1] == ' ')
 635       value.erase(length - 2, 2);
 636    fprintf(history_out, "%s: %s\n", tag.c_str(), value.c_str());
 637 }                                                                       /*}}}*/
 638 // DPkgPM::OpenLog                                                      /*{{{*/
 639 bool pkgDPkgPM::OpenLog()
 640 {
 641    string const logdir = _config->FindDir("Dir::Log");
 642    if(not FileExists(logdir))
 643       return _error->Error(_("Directory '%s' missing"), logdir.c_str());
 644
 645    // get current time
 646    char timestr[200];
 647    time_t const t = time(NULL);
 648    struct tm const * const tmp = localtime(&t);
 649    strftime(timestr, sizeof(timestr), "%F  %T", tmp);
 650
 651    // open terminal log
 652    string const logfile_name = flCombine(logdir,
 653                                    _config->Find("Dir::Log::Terminal"));
 654    if (!logfile_name.empty())
 655    {
 656       term_out = fopen(logfile_name.c_str(),"a");
 657       if (term_out == NULL)
 658          return _error->WarningE("OpenLog", _("Could not open file '%s'"), logfile_name.c_str());
 659
 660       chmod(logfile_name.c_str(), 0600);
 661       fprintf(term_out, "\nLog started: %s\n", timestr);
 662    }
 663
 664    // write your history
 665    string const history_name = flCombine(logdir,
 666                                    _config->Find("Dir::Log::History"));
 667    if (!history_name.empty())
 668    {
 669       history_out = fopen(history_name.c_str(),"a");
 670       if (history_out == NULL)
 671          return _error->WarningE("OpenLog", _("Could not open file '%s'"), history_name.c_str());
 672       chmod(history_name.c_str(), 0644);
 673       fprintf(history_out, "\nStart-Date: %s\n", timestr);
 674       string remove, purge, install, upgrade, downgrade;
 675       for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
 676       {
 677          if (Cache[I].NewInstall())
 678             install += I.Name() + string(" (") + Cache[I].CandVersion + string("), ");
 679          else if (Cache[I].Upgrade())
 680             upgrade += I.Name() + string(" (") + Cache[I].CurVersion + string(", ") + Cache[I].CandVersion + string("), ");
 681          else if (Cache[I].Downgrade())
 682             downgrade += I.Name() + string(" (") + Cache[I].CurVersion + string(", ") + Cache[I].CandVersion + string("), ");
 683          else if (Cache[I].Delete())
 684          {
 685             if ((Cache[I].iFlags & pkgDepCache::Purge) == pkgDepCache::Purge)
 686                purge += I.Name() + string(" (") + Cache[I].CurVersion + string("), ");
 687             else
 688                remove += I.Name() + string(" (") + Cache[I].CurVersion + string("), ");
 689          }
 690       }
 691       if (_config->Exists("Commandline::AsString") == true)
 692          WriteHistoryTag("Commandline", _config->Find("Commandline::AsString"));
 693       WriteHistoryTag("Install", install);
 694       WriteHistoryTag("Upgrade", upgrade);
 695       WriteHistoryTag("Downgrade",downgrade);
 696       WriteHistoryTag("Remove",remove);
 697       WriteHistoryTag("Purge",purge);
 698       fflush(history_out);
 699    }
 700
 701    return true;
 702 }
 703                                                                         /*}}}*/
 704 // DPkg::CloseLog                                                       /*{{{*/
 705 bool pkgDPkgPM::CloseLog()
 706 {
 707    char timestr[200];
 708    time_t t = time(NULL);
 709    struct tm *tmp = localtime(&t);
 710    strftime(timestr, sizeof(timestr), "%F  %T", tmp);
 711
 712    if(term_out)
 713    {
 714       fprintf(term_out, "Log ended: ");
 715       fprintf(term_out, "%s", timestr);
 716       fprintf(term_out, "\n");
 717       fclose(term_out);
 718    }
 719    term_out = NULL;
 720
 721    if(history_out)
 722    {
 723       if (disappearedPkgs.empty() == false)
 724       {
 725          string disappear;
 726          for (std::set<std::string>::const_iterator d = disappearedPkgs.begin();
 727               d != disappearedPkgs.end(); ++d)
 728          {
 729             pkgCache::PkgIterator P = Cache.FindPkg(*d);
 730             disappear.append(*d);
 731             if (P.end() == true)
 732                disappear.append(", ");
 733             else
 734                disappear.append(" (").append(Cache[P].CurVersion).append("), ");
 735          }
 736          WriteHistoryTag("Disappeared", disappear);
 737       }
 738       if (dpkg_error.empty() == false)
 739          fprintf(history_out, "Error: %s\n", dpkg_error.c_str());
 740       fprintf(history_out, "End-Date: %s\n", timestr);
 741       fclose(history_out);
 742    }
 743    history_out = NULL;
 744
 745    return true;
 746 }
 747                                                                         /*}}}*/
 748 /*{{{*/
 749 // This implements a racy version of pselect for those architectures
 750 // that don't have a working implementation.
 751 // FIXME: Probably can be removed on Lenny+1
 752 static int racy_pselect(int nfds, fd_set *readfds, fd_set *writefds,
 753    fd_set *exceptfds, const struct timespec *timeout,
 754    const sigset_t *sigmask)
 755 {
 756    sigset_t origmask;
 757    struct timeval tv;
 758    int retval;
 759
 760    tv.tv_sec = timeout->tv_sec;
 761    tv.tv_usec = timeout->tv_nsec/1000;
 762
 763    sigprocmask(SIG_SETMASK, sigmask, &origmask);
 764    retval = select(nfds, readfds, writefds, exceptfds, &tv);
 765    sigprocmask(SIG_SETMASK, &origmask, 0);
 766    return retval;
 767 }
 768 /*}}}*/
 769 // DPkgPM::Go - Run the sequence                                        /*{{{*/
 770 // ---------------------------------------------------------------------
 771 /* This globs the operations and calls dpkg
 772  *
 773  * If it is called with "OutStatusFd" set to a valid file descriptor
 774  * apt will report the install progress over this fd. It maps the
 775  * dpkg states a package goes through to human readable (and i10n-able)
 776  * names and calculates a percentage for each step.
 777 */
 778 bool pkgDPkgPM::Go(int OutStatusFd)
 779 {
 780    fd_set rfds;
 781    struct timespec tv;
 782    sigset_t sigmask;
 783    sigset_t original_sigmask;
 784
 785    unsigned int const MaxArgs = _config->FindI("Dpkg::MaxArgs",8*1024);
 786    unsigned int const MaxArgBytes = _config->FindI("Dpkg::MaxArgBytes",32*1024);
 787    bool const NoTriggers = _config->FindB("DPkg::NoTriggers", false);
 788
 789    if (RunScripts("DPkg::Pre-Invoke") == false)
 790       return false;
 791
 792    if (RunScriptsWithPkgs("DPkg::Pre-Install-Pkgs") == false)
 793       return false;
 794
 795    // support subpressing of triggers processing for special
 796    // cases like d-i that runs the triggers handling manually
 797    bool const SmartConf = (_config->Find("PackageManager::Configure", "all") != "all");
 798    bool const TriggersPending = _config->FindB("DPkg::TriggersPending", false);
 799    if (_config->FindB("DPkg::ConfigurePending", SmartConf) == true)
 800       List.push_back(Item(Item::ConfigurePending, PkgIterator()));
 801
 802    // map the dpkg states to the operations that are performed
 803    // (this is sorted in the same way as Item::Ops)
 804    static const struct DpkgState DpkgStatesOpMap[][7] = {
 805       // Install operation
 806       {
 807          {"half-installed", N_("Preparing %s")},
 808          {"unpacked", N_("Unpacking %s") },
 809          {NULL, NULL}
 810       },
 811       // Configure operation
 812       {
 813          {"unpacked",N_("Preparing to configure %s") },
 814          {"half-configured", N_("Configuring %s") },
 815          { "installed", N_("Installed %s")},
 816          {NULL, NULL}
 817       },
 818       // Remove operation
 819       {
 820          {"half-configured", N_("Preparing for removal of %s")},
 821          {"half-installed", N_("Removing %s")},
 822          {"config-files",  N_("Removed %s")},
 823          {NULL, NULL}
 824       },
 825       // Purge operation
 826       {
 827          {"config-files", N_("Preparing to completely remove %s")},
 828          {"not-installed", N_("Completely removed %s")},
 829          {NULL, NULL}
 830       },
 831    };
 832
 833    // init the PackageOps map, go over the list of packages that
 834    // that will be [installed|configured|removed|purged] and add
 835    // them to the PackageOps map (the dpkg states it goes through)
 836    // and the PackageOpsTranslations (human readable strings)
 837    for (vector<Item>::const_iterator I = List.begin(); I != List.end();I++)
 838    {
 839       if((*I).Pkg.end() == true)
 840          continue;
 841
 842       string const name = (*I).Pkg.Name();
 843       PackageOpsDone[name] = 0;
 844       for(int i=0; (DpkgStatesOpMap[(*I).Op][i]).state != NULL;  i++)
 845       {
 846          PackageOps[name].push_back(DpkgStatesOpMap[(*I).Op][i]);
 847          PackagesTotal++;
 848       }
 849    }
 850
 851    stdin_is_dev_null = false;
 852
 853    // create log
 854    OpenLog();
 855
 856    // this loop is runs once per operation
 857    for (vector<Item>::const_iterator I = List.begin(); I != List.end();)
 858    {
 859       // Do all actions with the same Op in one run
 860       vector<Item>::const_iterator J = I;
 861       if (TriggersPending == true)
 862          for (; J != List.end(); J++)
 863          {
 864             if (J->Op == I->Op)
 865                continue;
 866             if (J->Op != Item::TriggersPending)
 867                break;
 868             vector<Item>::const_iterator T = J + 1;
 869             if (T != List.end() && T->Op == I->Op)
 870                continue;
 871             break;
 872          }
 873       else
 874          for (; J != List.end() && J->Op == I->Op; J++)
 875             /* nothing */;
 876
 877       // Generate the argument list
 878       const char *Args[MaxArgs + 50];
 879
 880       // Now check if we are within the MaxArgs limit
 881       //
 882       // this code below is problematic, because it may happen that
 883       // the argument list is split in a way that A depends on B
 884       // and they are in the same "--configure A B" run
 885       // - with the split they may now be configured in different
 886       //   runs
 887       if (J - I > (signed)MaxArgs)
 888          J = I + MaxArgs;
 889
 890       unsigned int n = 0;
 891       unsigned long Size = 0;
 892       string const Tmp = _config->Find("Dir::Bin::dpkg","dpkg");
 893       Args[n++] = Tmp.c_str();
 894       Size += strlen(Args[n-1]);
 895
 896       // Stick in any custom dpkg options
 897       Configuration::Item const *Opts = _config->Tree("DPkg::Options");
 898       if (Opts != 0)
 899       {
 900          Opts = Opts->Child;
 901          for (; Opts != 0; Opts = Opts->Next)
 902          {
 903             if (Opts->Value.empty() == true)
 904                continue;
 905             Args[n++] = Opts->Value.c_str();
 906             Size += Opts->Value.length();
 907          }
 908       }
 909
 910       char status_fd_buf[20];
 911       int fd[2];
 912       pipe(fd);
 913
 914       Args[n++] = "--status-fd";
 915       Size += strlen(Args[n-1]);
 916       snprintf(status_fd_buf,sizeof(status_fd_buf),"%i", fd[1]);
 917       Args[n++] = status_fd_buf;
 918       Size += strlen(Args[n-1]);
 919
 920       switch (I->Op)
 921       {
 922          case Item::Remove:
 923          Args[n++] = "--force-depends";
 924          Size += strlen(Args[n-1]);
 925          Args[n++] = "--force-remove-essential";
 926          Size += strlen(Args[n-1]);
 927          Args[n++] = "--remove";
 928          Size += strlen(Args[n-1]);
 929          break;
 930
 931          case Item::Purge:
 932          Args[n++] = "--force-depends";
 933          Size += strlen(Args[n-1]);
 934          Args[n++] = "--force-remove-essential";
 935          Size += strlen(Args[n-1]);
 936          Args[n++] = "--purge";
 937          Size += strlen(Args[n-1]);
 938          break;
 939
 940          case Item::Configure:
 941          Args[n++] = "--configure";
 942          Size += strlen(Args[n-1]);
 943          break;
 944
 945          case Item::ConfigurePending:
 946          Args[n++] = "--configure";
 947          Size += strlen(Args[n-1]);
 948          Args[n++] = "--pending";
 949          Size += strlen(Args[n-1]);
 950          break;
 951
 952          case Item::TriggersPending:
 953          Args[n++] = "--triggers-only";
 954          Size += strlen(Args[n-1]);
 955          Args[n++] = "--pending";
 956          Size += strlen(Args[n-1]);
 957          break;
 958
 959          case Item::Install:
 960          Args[n++] = "--unpack";
 961          Size += strlen(Args[n-1]);
 962          Args[n++] = "--auto-deconfigure";
 963          Size += strlen(Args[n-1]);
 964          break;
 965       }
 966
 967       if (NoTriggers == true && I->Op != Item::TriggersPending &&
 968           I->Op != Item::ConfigurePending)
 969       {
 970          Args[n++] = "--no-triggers";
 971          Size += strlen(Args[n-1]);
 972       }
 973
 974       // Write in the file or package names
 975       if (I->Op == Item::Install)
 976       {
 977          for (;I != J && Size < MaxArgBytes; I++)
 978          {
 979             if (I->File[0] != '/')
 980                return _error->Error("Internal Error, Pathname to install is not absolute '%s'",I->File.c_str());
 981             Args[n++] = I->File.c_str();
 982             Size += strlen(Args[n-1]);
 983          }
 984       }
 985       else
 986       {
 987          for (;I != J && Size < MaxArgBytes; I++)
 988          {
 989             if((*I).Pkg.end() == true)
 990                continue;
 991             if (I->Op == Item::Configure && disappearedPkgs.find(I->Pkg.Name()) != disappearedPkgs.end())
 992                continue;
 993             Args[n++] = I->Pkg.Name();
 994             Size += strlen(Args[n-1]);
 995          }
 996       }
 997       Args[n] = 0;
 998       J = I;
 999
1000       if (_config->FindB("Debug::pkgDPkgPM",false) == true)
1001       {
1002          for (unsigned int k = 0; k != n; k++)
1003             clog << Args[k] << ' ';
1004          clog << endl;
1005          continue;
1006       }
1007
1008       cout << flush;
1009       clog << flush;
1010       cerr << flush;
1011
1012       /* Mask off sig int/quit. We do this because dpkg also does when
1013          it forks scripts. What happens is that when you hit ctrl-c it sends
1014          it to all processes in the group. Since dpkg ignores the signal
1015          it doesn't die but we do! So we must also ignore it */
1016       sighandler_t old_SIGQUIT = signal(SIGQUIT,SIG_IGN);
1017       sighandler_t old_SIGINT = signal(SIGINT,SIG_IGN);
1018
1019       // ignore SIGHUP as well (debian #463030)
1020       sighandler_t old_SIGHUP = signal(SIGHUP,SIG_IGN);
1021
1022       struct    termios tt;
1023       struct    winsize win;
1024       int       master = -1;
1025       int       slave = -1;
1026
1027       // if tcgetattr does not return zero there was a error
1028       // and we do not do any pty magic
1029       if (tcgetattr(0, &tt) == 0)
1030       {
1031          ioctl(0, TIOCGWINSZ, (char *)&win);
1032          if (openpty(&master, &slave, NULL, &tt, &win) < 0)
1033          {
1034             const char *s = _("Can not write log, openpty() "
1035                               "failed (/dev/pts not mounted?)\n");
1036             fprintf(stderr, "%s",s);
1037             if(term_out)
1038               fprintf(term_out, "%s",s);
1039             master = slave = -1;
1040          }  else {
1041             struct termios rtt;
1042             rtt = tt;
1043             cfmakeraw(&rtt);
1044             rtt.c_lflag &= ~ECHO;
1045             rtt.c_lflag |= ISIG;
1046             // block SIGTTOU during tcsetattr to prevent a hang if
1047             // the process is a member of the background process group
1048             // http://www.opengroup.org/onlinepubs/000095399/functions/tcsetattr.html
1049             sigemptyset(&sigmask);
1050             sigaddset(&sigmask, SIGTTOU);
1051             sigprocmask(SIG_BLOCK,&sigmask, &original_sigmask);
1052             tcsetattr(0, TCSAFLUSH, &rtt);
1053             sigprocmask(SIG_SETMASK, &original_sigmask, 0);
1054          }
1055       }
1056
1057        // Fork dpkg
1058       pid_t Child;
1059       _config->Set("APT::Keep-Fds::",fd[1]);
1060       // send status information that we are about to fork dpkg
1061       if(OutStatusFd > 0) {
1062          ostringstream status;
1063          status << "pmstatus:dpkg-exec:"
1064                 << (PackagesDone/float(PackagesTotal)*100.0)
1065                 << ":" << _("Running dpkg")
1066                 << endl;
1067          write(OutStatusFd, status.str().c_str(), status.str().size());
1068       }
1069       Child = ExecFork();
1070
1071       // This is the child
1072       if (Child == 0)
1073       {
1074          if(slave >= 0 && master >= 0)
1075          {
1076             setsid();
1077             ioctl(slave, TIOCSCTTY, 0);
1078             close(master);
1079             dup2(slave, 0);
1080             dup2(slave, 1);
1081             dup2(slave, 2);
1082             close(slave);
1083          }
1084          close(fd[0]); // close the read end of the pipe
1085
1086          if (_config->FindDir("DPkg::Chroot-Directory","/") != "/")
1087          {
1088             std::cerr << "Chrooting into "
1089                       << _config->FindDir("DPkg::Chroot-Directory")
1090                       << std::endl;
1091             if (chroot(_config->FindDir("DPkg::Chroot-Directory","/").c_str()) != 0)
1092                _exit(100);
1093          }
1094
1095          if (chdir(_config->FindDir("DPkg::Run-Directory","/").c_str()) != 0)
1096             _exit(100);
1097
1098          if (_config->FindB("DPkg::FlushSTDIN",true) == true && isatty(STDIN_FILENO))
1099          {
1100             int Flags,dummy;
1101             if ((Flags = fcntl(STDIN_FILENO,F_GETFL,dummy)) < 0)
1102                _exit(100);
1103
1104             // Discard everything in stdin before forking dpkg
1105             if (fcntl(STDIN_FILENO,F_SETFL,Flags | O_NONBLOCK) < 0)
1106                _exit(100);
1107
1108             while (read(STDIN_FILENO,&dummy,1) == 1);
1109
1110             if (fcntl(STDIN_FILENO,F_SETFL,Flags & (~(long)O_NONBLOCK)) < 0)
1111                _exit(100);
1112          }
1113
1114          /* No Job Control Stop Env is a magic dpkg var that prevents it
1115             from using sigstop */
1116          putenv((char *)"DPKG_NO_TSTP=yes");
1117          execvp(Args[0],(char **)Args);
1118          cerr << "Could not exec dpkg!" << endl;
1119          _exit(100);
1120       }
1121
1122       // apply ionice
1123       if (_config->FindB("DPkg::UseIoNice", false) == true)
1124          ionice(Child);
1125
1126       // clear the Keep-Fd again
1127       _config->Clear("APT::Keep-Fds",fd[1]);
1128
1129       // Wait for dpkg
1130       int Status = 0;
1131
1132       // we read from dpkg here
1133       int const _dpkgin = fd[0];
1134       close(fd[1]);                        // close the write end of the pipe
1135
1136       if(slave > 0)
1137          close(slave);
1138
1139       // setups fds
1140       sigemptyset(&sigmask);
1141       sigprocmask(SIG_BLOCK,&sigmask,&original_sigmask);
1142
1143       // the result of the waitpid call
1144       int res;
1145       int select_ret;
1146       while ((res=waitpid(Child,&Status, WNOHANG)) != Child) {
1147          if(res < 0) {
1148             // FIXME: move this to a function or something, looks ugly here
1149             // error handling, waitpid returned -1
1150             if (errno == EINTR)
1151                continue;
1152             RunScripts("DPkg::Post-Invoke");
1153
1154             // Restore sig int/quit
1155             signal(SIGQUIT,old_SIGQUIT);
1156             signal(SIGINT,old_SIGINT);
1157             signal(SIGHUP,old_SIGHUP);
1158             return _error->Errno("waitpid","Couldn't wait for subprocess");
1159          }
1160
1161          // wait for input or output here
1162          FD_ZERO(&rfds);
1163          if (master >= 0 && !stdin_is_dev_null)
1164             FD_SET(0, &rfds);
1165          FD_SET(_dpkgin, &rfds);
1166          if(master >= 0)
1167             FD_SET(master, &rfds);
1168          tv.tv_sec = 1;
1169          tv.tv_nsec = 0;
1170          select_ret = pselect(max(master, _dpkgin)+1, &rfds, NULL, NULL,
1171                               &tv, &original_sigmask);
1172          if (select_ret < 0 && (errno == EINVAL || errno == ENOSYS))
1173             select_ret = racy_pselect(max(master, _dpkgin)+1, &rfds, NULL,
1174                                       NULL, &tv, &original_sigmask);
1175          if (select_ret == 0)
1176             continue;
1177          else if (select_ret < 0 && errno == EINTR)
1178             continue;
1179          else if (select_ret < 0)
1180          {
1181             perror("select() returned error");
1182             continue;
1183          }
1184
1185          if(master >= 0 && FD_ISSET(master, &rfds))
1186             DoTerminalPty(master);
1187          if(master >= 0 && FD_ISSET(0, &rfds))
1188             DoStdin(master);
1189          if(FD_ISSET(_dpkgin, &rfds))
1190             DoDpkgStatusFd(_dpkgin, OutStatusFd);
1191       }
1192       close(_dpkgin);
1193
1194       // Restore sig int/quit
1195       signal(SIGQUIT,old_SIGQUIT);
1196       signal(SIGINT,old_SIGINT);
1197       signal(SIGHUP,old_SIGHUP);
1198
1199       if(master >= 0)
1200       {
1201          tcsetattr(0, TCSAFLUSH, &tt);
1202          close(master);
1203       }
1204
1205       // Check for an error code.
1206       if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
1207       {
1208          // if it was set to "keep-dpkg-runing" then we won't return
1209          // here but keep the loop going and just report it as a error
1210          // for later
1211          bool const stopOnError = _config->FindB("Dpkg::StopOnError",true);
1212
1213          if(stopOnError)
1214             RunScripts("DPkg::Post-Invoke");
1215
1216          if (WIFSIGNALED(Status) != 0 && WTERMSIG(Status) == SIGSEGV)
1217             strprintf(dpkg_error, "Sub-process %s received a segmentation fault.",Args[0]);
1218          else if (WIFEXITED(Status) != 0)
1219             strprintf(dpkg_error, "Sub-process %s returned an error code (%u)",Args[0],WEXITSTATUS(Status));
1220          else
1221             strprintf(dpkg_error, "Sub-process %s exited unexpectedly",Args[0]);
1222
1223          if(dpkg_error.size() > 0)
1224             _error->Error(dpkg_error.c_str());
1225
1226          if(stopOnError)
1227          {
1228             CloseLog();
1229             return false;
1230          }
1231       }
1232    }
1233    CloseLog();
1234
1235    if (RunScripts("DPkg::Post-Invoke") == false)
1236       return false;
1237
1238    Cache.writeStateFile(NULL);
1239    return true;
1240 }
1241                                                                         /*}}}*/
1242 // pkgDpkgPM::Reset - Dump the contents of the command list             /*{{{*/
1243 // ---------------------------------------------------------------------
1244 /* */
1245 void pkgDPkgPM::Reset()
1246 {
1247    List.erase(List.begin(),List.end());
1248 }
1249                                                                         /*}}}*/
1250 // pkgDpkgPM::WriteApportReport - write out error report pkg failure    /*{{{*/
1251 // ---------------------------------------------------------------------
1252 /* */
1253 void pkgDPkgPM::WriteApportReport(const char *pkgpath, const char *errormsg)
1254 {
1255    string pkgname, reportfile, srcpkgname, pkgver, arch;
1256    string::size_type pos;
1257    FILE *report;
1258
1259    if (_config->FindB("Dpkg::ApportFailureReport", false) == false)
1260    {
1261       std::clog << "configured to not write apport reports" << std::endl;
1262       return;
1263    }
1264
1265    // only report the first errors
1266    if(pkgFailures > _config->FindI("APT::Apport::MaxReports", 3))
1267    {
1268       std::clog << _("No apport report written because MaxReports is reached already") << std::endl;
1269       return;
1270    }
1271
1272    // check if its not a follow up error
1273    const char *needle = dgettext("dpkg", "dependency problems - leaving unconfigured");
1274    if(strstr(errormsg, needle) != NULL) {
1275       std::clog << _("No apport report written because the error message indicates its a followup error from a previous failure.") << std::endl;
1276       return;
1277    }
1278
1279    // do not report disk-full failures
1280    if(strstr(errormsg, strerror(ENOSPC)) != NULL) {
1281       std::clog << _("No apport report written because the error message indicates a disk full error") << std::endl;
1282       return;
1283    }
1284
1285    // do not report out-of-memory failures
1286    if(strstr(errormsg, strerror(ENOMEM)) != NULL) {
1287       std::clog << _("No apport report written because the error message indicates a out of memory error") << std::endl;
1288       return;
1289    }
1290
1291    // do not report dpkg I/O errors
1292    // XXX - this message is localized, but this only matches the English version.  This is better than nothing.
1293    if(strstr(errormsg, "short read in buffer_copy (")) {
1294       std::clog << _("No apport report written because the error message indicates a dpkg I/O error") << std::endl;
1295       return;
1296    }
1297
1298    // get the pkgname and reportfile
1299    pkgname = flNotDir(pkgpath);
1300    pos = pkgname.find('_');
1301    if(pos != string::npos)
1302       pkgname = pkgname.substr(0, pos);
1303
1304    // find the package versin and source package name
1305    pkgCache::PkgIterator Pkg = Cache.FindPkg(pkgname);
1306    if (Pkg.end() == true)
1307       return;
1308    pkgCache::VerIterator Ver = Cache.GetCandidateVer(Pkg);
1309    if (Ver.end() == true)
1310       return;
1311    pkgver = Ver.VerStr() == NULL ? "unknown" : Ver.VerStr();
1312    pkgRecords Recs(Cache);
1313    pkgRecords::Parser &Parse = Recs.Lookup(Ver.FileList());
1314    srcpkgname = Parse.SourcePkg();
1315    if(srcpkgname.empty())
1316       srcpkgname = pkgname;
1317
1318    // if the file exists already, we check:
1319    // - if it was reported already (touched by apport).
1320    //   If not, we do nothing, otherwise
1321    //    we overwrite it. This is the same behaviour as apport
1322    // - if we have a report with the same pkgversion already
1323    //   then we skip it
1324    reportfile = flCombine("/var/crash",pkgname+".0.crash");
1325    if(FileExists(reportfile))
1326    {
1327       struct stat buf;
1328       char strbuf[255];
1329
1330       // check atime/mtime
1331       stat(reportfile.c_str(), &buf);
1332       if(buf.st_mtime > buf.st_atime)
1333          return;
1334
1335       // check if the existing report is the same version
1336       report = fopen(reportfile.c_str(),"r");
1337       while(fgets(strbuf, sizeof(strbuf), report) != NULL)
1338       {
1339          if(strstr(strbuf,"Package:") == strbuf)
1340          {
1341             char pkgname[255], version[255];
1342             if(sscanf(strbuf, "Package: %s %s", pkgname, version) == 2)
1343                if(strcmp(pkgver.c_str(), version) == 0)
1344                {
1345                   fclose(report);
1346                   return;
1347                }
1348          }
1349       }
1350       fclose(report);
1351    }
1352
1353    // now write the report
1354    arch = _config->Find("APT::Architecture");
1355    report = fopen(reportfile.c_str(),"w");
1356    if(report == NULL)
1357       return;
1358    if(_config->FindB("DPkgPM::InitialReportOnly",false) == true)
1359       chmod(reportfile.c_str(), 0);
1360    else
1361       chmod(reportfile.c_str(), 0600);
1362    fprintf(report, "ProblemType: Package\n");
1363    fprintf(report, "Architecture: %s\n", arch.c_str());
1364    time_t now = time(NULL);
1365    fprintf(report, "Date: %s" , ctime(&now));
1366    fprintf(report, "Package: %s %s\n", pkgname.c_str(), pkgver.c_str());
1367    fprintf(report, "SourcePackage: %s\n", srcpkgname.c_str());
1368    fprintf(report, "ErrorMessage:\n %s\n", errormsg);
1369
1370    // ensure that the log is flushed
1371    if(term_out)
1372       fflush(term_out);
1373
1374    // attach terminal log it if we have it
1375    string logfile_name = _config->FindFile("Dir::Log::Terminal");
1376    if (!logfile_name.empty())
1377    {
1378       FILE *log = NULL;
1379       char buf[1024];
1380
1381       fprintf(report, "DpkgTerminalLog:\n");
1382       log = fopen(logfile_name.c_str(),"r");
1383       if(log != NULL)
1384       {
1385          while( fgets(buf, sizeof(buf), log) != NULL)
1386             fprintf(report, " %s", buf);
1387          fclose(log);
1388       }
1389    }
1390
1391    // log the ordering
1392    const char *ops_str[] = {"Install", "Configure","Remove","Purge"};
1393    fprintf(report, "AptOrdering:\n");
1394    for (vector<Item>::iterator I = List.begin(); I != List.end(); I++)
1395       fprintf(report, " %s: %s\n", (*I).Pkg.Name(), ops_str[(*I).Op]);
1396
1397    // attach dmesg log (to learn about segfaults)
1398    if (FileExists("/bin/dmesg"))
1399    {
1400       FILE *log = NULL;
1401       char buf[1024];
1402
1403       fprintf(report, "Dmesg:\n");
1404       log = popen("/bin/dmesg","r");
1405       if(log != NULL)
1406       {
1407          while( fgets(buf, sizeof(buf), log) != NULL)
1408             fprintf(report, " %s", buf);
1409          fclose(log);
1410       }
1411    }
1412
1413    // attach df -l log (to learn about filesystem status)
1414    if (FileExists("/bin/df"))
1415    {
1416       FILE *log = NULL;
1417       char buf[1024];
1418
1419       fprintf(report, "Df:\n");
1420       log = popen("/bin/df -l","r");
1421       if(log != NULL)
1422       {
1423          while( fgets(buf, sizeof(buf), log) != NULL)
1424             fprintf(report, " %s", buf);
1425          fclose(log);
1426       }
1427    }
1428
1429    fclose(report);
1430
1431 }
1432                                                                         /*}}}*/