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 = Cache[Pkg].InstVerIter(Cache);
 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 =  Cache[Tar].InstVerIter(Cache);
 575       if (TarVer.end() == true)
 576          continue;
 577       for (pkgCache::DepIterator Rep = TarVer.DependsList(); Rep.end() != true; ++Rep)
 578       {
 579          if (Rep->Type != pkgCache::Dep::Replaces)
 580             continue;
 581          if (Pkg != Rep.TargetPkg())
 582             continue;
 583          // okay, they are strongly connected - transfer manual-bit
 584          if (Debug == true)
 585             std::clog << "transfer manual-bit from disappeared »" << pkgname << "« to »" << Tar.FullName() << "«" << std::endl;
 586          Cache[Tar].Flags &= ~Flag::Auto;
 587          break;
 588       }
 589    }
 590 }
 591                                                                         /*}}}*/
 592 // DPkgPM::DoDpkgStatusFd                                               /*{{{*/
 593 // ---------------------------------------------------------------------
 594 /*
 595  */
 596 void pkgDPkgPM::DoDpkgStatusFd(int statusfd, int OutStatusFd)
 597 {
 598    char *p, *q;
 599    int len;
 600
 601    len=read(statusfd, &dpkgbuf[dpkgbuf_pos], sizeof(dpkgbuf)-dpkgbuf_pos);
 602    dpkgbuf_pos += len;
 603    if(len <= 0)
 604       return;
 605
 606    // process line by line if we have a buffer
 607    p = q = dpkgbuf;
 608    while((q=(char*)memchr(p, '\n', dpkgbuf+dpkgbuf_pos-p)) != NULL)
 609    {
 610       *q = 0;
 611       ProcessDpkgStatusLine(OutStatusFd, p);
 612       p=q+1; // continue with next line
 613    }
 614
 615    // now move the unprocessed bits (after the final \n that is now a 0x0)
 616    // to the start and update dpkgbuf_pos
 617    p = (char*)memrchr(dpkgbuf, 0, dpkgbuf_pos);
 618    if(p == NULL)
 619       return;
 620
 621    // we are interessted in the first char *after* 0x0
 622    p++;
 623
 624    // move the unprocessed tail to the start and update pos
 625    memmove(dpkgbuf, p, p-dpkgbuf);
 626    dpkgbuf_pos = dpkgbuf+dpkgbuf_pos-p;
 627 }
 628                                                                         /*}}}*/
 629 // DPkgPM::WriteHistoryTag                                              /*{{{*/
 630 void pkgDPkgPM::WriteHistoryTag(string const &tag, string value)
 631 {
 632    size_t const length = value.length();
 633    if (length == 0)
 634       return;
 635    // poor mans rstrip(", ")
 636    if (value[length-2] == ',' && value[length-1] == ' ')
 637       value.erase(length - 2, 2);
 638    fprintf(history_out, "%s: %s\n", tag.c_str(), value.c_str());
 639 }                                                                       /*}}}*/
 640 // DPkgPM::OpenLog                                                      /*{{{*/
 641 bool pkgDPkgPM::OpenLog()
 642 {
 643    string const logdir = _config->FindDir("Dir::Log");
 644    if(CreateAPTDirectoryIfNeeded(logdir, logdir) == false)
 645       // FIXME: use a better string after freeze
 646       return _error->Error(_("Directory '%s' missing"), logdir.c_str());
 647
 648    // get current time
 649    char timestr[200];
 650    time_t const t = time(NULL);
 651    struct tm const * const tmp = localtime(&t);
 652    strftime(timestr, sizeof(timestr), "%F  %T", tmp);
 653
 654    // open terminal log
 655    string const logfile_name = flCombine(logdir,
 656                                    _config->Find("Dir::Log::Terminal"));
 657    if (!logfile_name.empty())
 658    {
 659       term_out = fopen(logfile_name.c_str(),"a");
 660       if (term_out == NULL)
 661          return _error->WarningE("OpenLog", _("Could not open file '%s'"), logfile_name.c_str());
 662       setvbuf(term_out, NULL, _IONBF, 0);
 663       chmod(logfile_name.c_str(), 0600);
 664       fprintf(term_out, "\nLog started: %s\n", timestr);
 665    }
 666
 667    // write your history
 668    string const history_name = flCombine(logdir,
 669                                    _config->Find("Dir::Log::History"));
 670    if (!history_name.empty())
 671    {
 672       history_out = fopen(history_name.c_str(),"a");
 673       if (history_out == NULL)
 674          return _error->WarningE("OpenLog", _("Could not open file '%s'"), history_name.c_str());
 675       chmod(history_name.c_str(), 0644);
 676       fprintf(history_out, "\nStart-Date: %s\n", timestr);
 677       string remove, purge, install, upgrade, downgrade;
 678       for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
 679       {
 680          if (Cache[I].NewInstall())
 681          {
 682             install += I.FullName(false) + string(" (") + Cache[I].CandVersion;
 683             if (Cache[I].Flags & pkgCache::Flag::Auto)
 684                install+= ", automatic";
 685             install += string("), ");
 686          }
 687          else if (Cache[I].Upgrade())
 688             upgrade += I.FullName(false) + string(" (") + Cache[I].CurVersion + string(", ") + Cache[I].CandVersion + string("), ");
 689          else if (Cache[I].Downgrade())
 690             downgrade += I.FullName(false) + string(" (") + Cache[I].CurVersion + string(", ") + Cache[I].CandVersion + string("), ");
 691          else if (Cache[I].Delete())
 692          {
 693             if ((Cache[I].iFlags & pkgDepCache::Purge) == pkgDepCache::Purge)
 694                purge += I.FullName(false) + string(" (") + Cache[I].CurVersion + string("), ");
 695             else
 696                remove += I.FullName(false) + string(" (") + Cache[I].CurVersion + string("), ");
 697          }
 698       }
 699       if (_config->Exists("Commandline::AsString") == true)
 700          WriteHistoryTag("Commandline", _config->Find("Commandline::AsString"));
 701       WriteHistoryTag("Install", install);
 702       WriteHistoryTag("Upgrade", upgrade);
 703       WriteHistoryTag("Downgrade",downgrade);
 704       WriteHistoryTag("Remove",remove);
 705       WriteHistoryTag("Purge",purge);
 706       fflush(history_out);
 707    }
 708
 709    return true;
 710 }
 711                                                                         /*}}}*/
 712 // DPkg::CloseLog                                                       /*{{{*/
 713 bool pkgDPkgPM::CloseLog()
 714 {
 715    char timestr[200];
 716    time_t t = time(NULL);
 717    struct tm *tmp = localtime(&t);
 718    strftime(timestr, sizeof(timestr), "%F  %T", tmp);
 719
 720    if(term_out)
 721    {
 722       fprintf(term_out, "Log ended: ");
 723       fprintf(term_out, "%s", timestr);
 724       fprintf(term_out, "\n");
 725       fclose(term_out);
 726    }
 727    term_out = NULL;
 728
 729    if(history_out)
 730    {
 731       if (disappearedPkgs.empty() == false)
 732       {
 733          string disappear;
 734          for (std::set<std::string>::const_iterator d = disappearedPkgs.begin();
 735               d != disappearedPkgs.end(); ++d)
 736          {
 737             pkgCache::PkgIterator P = Cache.FindPkg(*d);
 738             disappear.append(*d);
 739             if (P.end() == true)
 740                disappear.append(", ");
 741             else
 742                disappear.append(" (").append(Cache[P].CurVersion).append("), ");
 743          }
 744          WriteHistoryTag("Disappeared", disappear);
 745       }
 746       if (dpkg_error.empty() == false)
 747          fprintf(history_out, "Error: %s\n", dpkg_error.c_str());
 748       fprintf(history_out, "End-Date: %s\n", timestr);
 749       fclose(history_out);
 750    }
 751    history_out = NULL;
 752
 753    return true;
 754 }
 755                                                                         /*}}}*/
 756 /*{{{*/
 757 // This implements a racy version of pselect for those architectures
 758 // that don't have a working implementation.
 759 // FIXME: Probably can be removed on Lenny+1
 760 static int racy_pselect(int nfds, fd_set *readfds, fd_set *writefds,
 761    fd_set *exceptfds, const struct timespec *timeout,
 762    const sigset_t *sigmask)
 763 {
 764    sigset_t origmask;
 765    struct timeval tv;
 766    int retval;
 767
 768    tv.tv_sec = timeout->tv_sec;
 769    tv.tv_usec = timeout->tv_nsec/1000;
 770
 771    sigprocmask(SIG_SETMASK, sigmask, &origmask);
 772    retval = select(nfds, readfds, writefds, exceptfds, &tv);
 773    sigprocmask(SIG_SETMASK, &origmask, 0);
 774    return retval;
 775 }
 776 /*}}}*/
 777 // DPkgPM::Go - Run the sequence                                        /*{{{*/
 778 // ---------------------------------------------------------------------
 779 /* This globs the operations and calls dpkg
 780  *
 781  * If it is called with "OutStatusFd" set to a valid file descriptor
 782  * apt will report the install progress over this fd. It maps the
 783  * dpkg states a package goes through to human readable (and i10n-able)
 784  * names and calculates a percentage for each step.
 785 */
 786 bool pkgDPkgPM::Go(int OutStatusFd)
 787 {
 788    fd_set rfds;
 789    struct timespec tv;
 790    sigset_t sigmask;
 791    sigset_t original_sigmask;
 792
 793    unsigned int const MaxArgs = _config->FindI("Dpkg::MaxArgs",8*1024);
 794    unsigned int const MaxArgBytes = _config->FindI("Dpkg::MaxArgBytes",32*1024);
 795    bool const NoTriggers = _config->FindB("DPkg::NoTriggers", false);
 796
 797    if (RunScripts("DPkg::Pre-Invoke") == false)
 798       return false;
 799
 800    if (RunScriptsWithPkgs("DPkg::Pre-Install-Pkgs") == false)
 801       return false;
 802
 803    // support subpressing of triggers processing for special
 804    // cases like d-i that runs the triggers handling manually
 805    bool const SmartConf = (_config->Find("PackageManager::Configure", "all") != "all");
 806    bool const TriggersPending = _config->FindB("DPkg::TriggersPending", false);
 807    if (_config->FindB("DPkg::ConfigurePending", SmartConf) == true)
 808       List.push_back(Item(Item::ConfigurePending, PkgIterator()));
 809
 810    // map the dpkg states to the operations that are performed
 811    // (this is sorted in the same way as Item::Ops)
 812    static const struct DpkgState DpkgStatesOpMap[][7] = {
 813       // Install operation
 814       {
 815          {"half-installed", N_("Preparing %s")},
 816          {"unpacked", N_("Unpacking %s") },
 817          {NULL, NULL}
 818       },
 819       // Configure operation
 820       {
 821          {"unpacked",N_("Preparing to configure %s") },
 822          {"half-configured", N_("Configuring %s") },
 823          { "installed", N_("Installed %s")},
 824          {NULL, NULL}
 825       },
 826       // Remove operation
 827       {
 828          {"half-configured", N_("Preparing for removal of %s")},
 829          {"half-installed", N_("Removing %s")},
 830          {"config-files",  N_("Removed %s")},
 831          {NULL, NULL}
 832       },
 833       // Purge operation
 834       {
 835          {"config-files", N_("Preparing to completely remove %s")},
 836          {"not-installed", N_("Completely removed %s")},
 837          {NULL, NULL}
 838       },
 839    };
 840
 841    // init the PackageOps map, go over the list of packages that
 842    // that will be [installed|configured|removed|purged] and add
 843    // them to the PackageOps map (the dpkg states it goes through)
 844    // and the PackageOpsTranslations (human readable strings)
 845    for (vector<Item>::const_iterator I = List.begin(); I != List.end();I++)
 846    {
 847       if((*I).Pkg.end() == true)
 848          continue;
 849
 850       string const name = (*I).Pkg.Name();
 851       PackageOpsDone[name] = 0;
 852       for(int i=0; (DpkgStatesOpMap[(*I).Op][i]).state != NULL;  i++)
 853       {
 854          PackageOps[name].push_back(DpkgStatesOpMap[(*I).Op][i]);
 855          PackagesTotal++;
 856       }
 857    }
 858
 859    stdin_is_dev_null = false;
 860
 861    // create log
 862    OpenLog();
 863
 864    // this loop is runs once per operation
 865    for (vector<Item>::const_iterator I = List.begin(); I != List.end();)
 866    {
 867       // Do all actions with the same Op in one run
 868       vector<Item>::const_iterator J = I;
 869       if (TriggersPending == true)
 870          for (; J != List.end(); J++)
 871          {
 872             if (J->Op == I->Op)
 873                continue;
 874             if (J->Op != Item::TriggersPending)
 875                break;
 876             vector<Item>::const_iterator T = J + 1;
 877             if (T != List.end() && T->Op == I->Op)
 878                continue;
 879             break;
 880          }
 881       else
 882          for (; J != List.end() && J->Op == I->Op; J++)
 883             /* nothing */;
 884
 885       // Generate the argument list
 886       const char *Args[MaxArgs + 50];
 887
 888       // Now check if we are within the MaxArgs limit
 889       //
 890       // this code below is problematic, because it may happen that
 891       // the argument list is split in a way that A depends on B
 892       // and they are in the same "--configure A B" run
 893       // - with the split they may now be configured in different
 894       //   runs
 895       if (J - I > (signed)MaxArgs)
 896          J = I + MaxArgs;
 897
 898       unsigned int n = 0;
 899       unsigned long Size = 0;
 900       string const Tmp = _config->Find("Dir::Bin::dpkg","dpkg");
 901       Args[n++] = Tmp.c_str();
 902       Size += strlen(Args[n-1]);
 903
 904       // Stick in any custom dpkg options
 905       Configuration::Item const *Opts = _config->Tree("DPkg::Options");
 906       if (Opts != 0)
 907       {
 908          Opts = Opts->Child;
 909          for (; Opts != 0; Opts = Opts->Next)
 910          {
 911             if (Opts->Value.empty() == true)
 912                continue;
 913             Args[n++] = Opts->Value.c_str();
 914             Size += Opts->Value.length();
 915          }
 916       }
 917
 918       char status_fd_buf[20];
 919       int fd[2];
 920       pipe(fd);
 921
 922       Args[n++] = "--status-fd";
 923       Size += strlen(Args[n-1]);
 924       snprintf(status_fd_buf,sizeof(status_fd_buf),"%i", fd[1]);
 925       Args[n++] = status_fd_buf;
 926       Size += strlen(Args[n-1]);
 927
 928       switch (I->Op)
 929       {
 930          case Item::Remove:
 931          Args[n++] = "--force-depends";
 932          Size += strlen(Args[n-1]);
 933          Args[n++] = "--force-remove-essential";
 934          Size += strlen(Args[n-1]);
 935          Args[n++] = "--remove";
 936          Size += strlen(Args[n-1]);
 937          break;
 938
 939          case Item::Purge:
 940          Args[n++] = "--force-depends";
 941          Size += strlen(Args[n-1]);
 942          Args[n++] = "--force-remove-essential";
 943          Size += strlen(Args[n-1]);
 944          Args[n++] = "--purge";
 945          Size += strlen(Args[n-1]);
 946          break;
 947
 948          case Item::Configure:
 949          Args[n++] = "--configure";
 950          Size += strlen(Args[n-1]);
 951          break;
 952
 953          case Item::ConfigurePending:
 954          Args[n++] = "--configure";
 955          Size += strlen(Args[n-1]);
 956          Args[n++] = "--pending";
 957          Size += strlen(Args[n-1]);
 958          break;
 959
 960          case Item::TriggersPending:
 961          Args[n++] = "--triggers-only";
 962          Size += strlen(Args[n-1]);
 963          Args[n++] = "--pending";
 964          Size += strlen(Args[n-1]);
 965          break;
 966
 967          case Item::Install:
 968          Args[n++] = "--unpack";
 969          Size += strlen(Args[n-1]);
 970          Args[n++] = "--auto-deconfigure";
 971          Size += strlen(Args[n-1]);
 972          break;
 973       }
 974
 975       if (NoTriggers == true && I->Op != Item::TriggersPending &&
 976           I->Op != Item::ConfigurePending)
 977       {
 978          Args[n++] = "--no-triggers";
 979          Size += strlen(Args[n-1]);
 980       }
 981
 982       // Write in the file or package names
 983       if (I->Op == Item::Install)
 984       {
 985          for (;I != J && Size < MaxArgBytes; I++)
 986          {
 987             if (I->File[0] != '/')
 988                return _error->Error("Internal Error, Pathname to install is not absolute '%s'",I->File.c_str());
 989             Args[n++] = I->File.c_str();
 990             Size += strlen(Args[n-1]);
 991          }
 992       }
 993       else
 994       {
 995          for (;I != J && Size < MaxArgBytes; I++)
 996          {
 997             if((*I).Pkg.end() == true)
 998                continue;
 999             if (I->Op == Item::Configure && disappearedPkgs.find(I->Pkg.Name()) != disappearedPkgs.end())
1000                continue;
1001             Args[n++] = I->Pkg.Name();
1002             Size += strlen(Args[n-1]);
1003          }
1004       }
1005       Args[n] = 0;
1006       J = I;
1007
1008       if (_config->FindB("Debug::pkgDPkgPM",false) == true)
1009       {
1010          for (unsigned int k = 0; k != n; k++)
1011             clog << Args[k] << ' ';
1012          clog << endl;
1013          continue;
1014       }
1015
1016       cout << flush;
1017       clog << flush;
1018       cerr << flush;
1019
1020       /* Mask off sig int/quit. We do this because dpkg also does when
1021          it forks scripts. What happens is that when you hit ctrl-c it sends
1022          it to all processes in the group. Since dpkg ignores the signal
1023          it doesn't die but we do! So we must also ignore it */
1024       sighandler_t old_SIGQUIT = signal(SIGQUIT,SIG_IGN);
1025       sighandler_t old_SIGINT = signal(SIGINT,SIG_IGN);
1026
1027       // ignore SIGHUP as well (debian #463030)
1028       sighandler_t old_SIGHUP = signal(SIGHUP,SIG_IGN);
1029
1030       struct    termios tt;
1031       struct    winsize win;
1032       int       master = -1;
1033       int       slave = -1;
1034
1035       // if tcgetattr does not return zero there was a error
1036       // and we do not do any pty magic
1037       if (tcgetattr(0, &tt) == 0)
1038       {
1039          ioctl(0, TIOCGWINSZ, (char *)&win);
1040          if (openpty(&master, &slave, NULL, &tt, &win) < 0)
1041          {
1042             const char *s = _("Can not write log, openpty() "
1043                               "failed (/dev/pts not mounted?)\n");
1044             fprintf(stderr, "%s",s);
1045             if(term_out)
1046               fprintf(term_out, "%s",s);
1047             master = slave = -1;
1048          }  else {
1049             struct termios rtt;
1050             rtt = tt;
1051             cfmakeraw(&rtt);
1052             rtt.c_lflag &= ~ECHO;
1053             rtt.c_lflag |= ISIG;
1054             // block SIGTTOU during tcsetattr to prevent a hang if
1055             // the process is a member of the background process group
1056             // http://www.opengroup.org/onlinepubs/000095399/functions/tcsetattr.html
1057             sigemptyset(&sigmask);
1058             sigaddset(&sigmask, SIGTTOU);
1059             sigprocmask(SIG_BLOCK,&sigmask, &original_sigmask);
1060             tcsetattr(0, TCSAFLUSH, &rtt);
1061             sigprocmask(SIG_SETMASK, &original_sigmask, 0);
1062          }
1063       }
1064
1065        // Fork dpkg
1066       pid_t Child;
1067       _config->Set("APT::Keep-Fds::",fd[1]);
1068       // send status information that we are about to fork dpkg
1069       if(OutStatusFd > 0) {
1070          ostringstream status;
1071          status << "pmstatus:dpkg-exec:"
1072                 << (PackagesDone/float(PackagesTotal)*100.0)
1073                 << ":" << _("Running dpkg")
1074                 << endl;
1075          write(OutStatusFd, status.str().c_str(), status.str().size());
1076       }
1077       Child = ExecFork();
1078
1079       // This is the child
1080       if (Child == 0)
1081       {
1082          if(slave >= 0 && master >= 0)
1083          {
1084             setsid();
1085             ioctl(slave, TIOCSCTTY, 0);
1086             close(master);
1087             dup2(slave, 0);
1088             dup2(slave, 1);
1089             dup2(slave, 2);
1090             close(slave);
1091          }
1092          close(fd[0]); // close the read end of the pipe
1093
1094          if (_config->FindDir("DPkg::Chroot-Directory","/") != "/")
1095          {
1096             std::cerr << "Chrooting into "
1097                       << _config->FindDir("DPkg::Chroot-Directory")
1098                       << std::endl;
1099             if (chroot(_config->FindDir("DPkg::Chroot-Directory","/").c_str()) != 0)
1100                _exit(100);
1101          }
1102
1103          if (chdir(_config->FindDir("DPkg::Run-Directory","/").c_str()) != 0)
1104             _exit(100);
1105
1106          if (_config->FindB("DPkg::FlushSTDIN",true) == true && isatty(STDIN_FILENO))
1107          {
1108             int Flags,dummy;
1109             if ((Flags = fcntl(STDIN_FILENO,F_GETFL,dummy)) < 0)
1110                _exit(100);
1111
1112             // Discard everything in stdin before forking dpkg
1113             if (fcntl(STDIN_FILENO,F_SETFL,Flags | O_NONBLOCK) < 0)
1114                _exit(100);
1115
1116             while (read(STDIN_FILENO,&dummy,1) == 1);
1117
1118             if (fcntl(STDIN_FILENO,F_SETFL,Flags & (~(long)O_NONBLOCK)) < 0)
1119                _exit(100);
1120          }
1121
1122          /* No Job Control Stop Env is a magic dpkg var that prevents it
1123             from using sigstop */
1124          putenv((char *)"DPKG_NO_TSTP=yes");
1125          execvp(Args[0],(char **)Args);
1126          cerr << "Could not exec dpkg!" << endl;
1127          _exit(100);
1128       }
1129
1130       // apply ionice
1131       if (_config->FindB("DPkg::UseIoNice", false) == true)
1132          ionice(Child);
1133
1134       // clear the Keep-Fd again
1135       _config->Clear("APT::Keep-Fds",fd[1]);
1136
1137       // Wait for dpkg
1138       int Status = 0;
1139
1140       // we read from dpkg here
1141       int const _dpkgin = fd[0];
1142       close(fd[1]);                        // close the write end of the pipe
1143
1144       if(slave > 0)
1145          close(slave);
1146
1147       // setups fds
1148       sigemptyset(&sigmask);
1149       sigprocmask(SIG_BLOCK,&sigmask,&original_sigmask);
1150
1151       // the result of the waitpid call
1152       int res;
1153       int select_ret;
1154       while ((res=waitpid(Child,&Status, WNOHANG)) != Child) {
1155          if(res < 0) {
1156             // FIXME: move this to a function or something, looks ugly here
1157             // error handling, waitpid returned -1
1158             if (errno == EINTR)
1159                continue;
1160             RunScripts("DPkg::Post-Invoke");
1161
1162             // Restore sig int/quit
1163             signal(SIGQUIT,old_SIGQUIT);
1164             signal(SIGINT,old_SIGINT);
1165             signal(SIGHUP,old_SIGHUP);
1166             return _error->Errno("waitpid","Couldn't wait for subprocess");
1167          }
1168
1169          // wait for input or output here
1170          FD_ZERO(&rfds);
1171          if (master >= 0 && !stdin_is_dev_null)
1172             FD_SET(0, &rfds);
1173          FD_SET(_dpkgin, &rfds);
1174          if(master >= 0)
1175             FD_SET(master, &rfds);
1176          tv.tv_sec = 1;
1177          tv.tv_nsec = 0;
1178          select_ret = pselect(max(master, _dpkgin)+1, &rfds, NULL, NULL,
1179                               &tv, &original_sigmask);
1180          if (select_ret < 0 && (errno == EINVAL || errno == ENOSYS))
1181             select_ret = racy_pselect(max(master, _dpkgin)+1, &rfds, NULL,
1182                                       NULL, &tv, &original_sigmask);
1183          if (select_ret == 0)
1184             continue;
1185          else if (select_ret < 0 && errno == EINTR)
1186             continue;
1187          else if (select_ret < 0)
1188          {
1189             perror("select() returned error");
1190             continue;
1191          }
1192
1193          if(master >= 0 && FD_ISSET(master, &rfds))
1194             DoTerminalPty(master);
1195          if(master >= 0 && FD_ISSET(0, &rfds))
1196             DoStdin(master);
1197          if(FD_ISSET(_dpkgin, &rfds))
1198             DoDpkgStatusFd(_dpkgin, OutStatusFd);
1199       }
1200       close(_dpkgin);
1201
1202       // Restore sig int/quit
1203       signal(SIGQUIT,old_SIGQUIT);
1204       signal(SIGINT,old_SIGINT);
1205       signal(SIGHUP,old_SIGHUP);
1206
1207       if(master >= 0)
1208       {
1209          tcsetattr(0, TCSAFLUSH, &tt);
1210          close(master);
1211       }
1212
1213       // Check for an error code.
1214       if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
1215       {
1216          // if it was set to "keep-dpkg-runing" then we won't return
1217          // here but keep the loop going and just report it as a error
1218          // for later
1219          bool const stopOnError = _config->FindB("Dpkg::StopOnError",true);
1220
1221          if(stopOnError)
1222             RunScripts("DPkg::Post-Invoke");
1223
1224          if (WIFSIGNALED(Status) != 0 && WTERMSIG(Status) == SIGSEGV)
1225             strprintf(dpkg_error, "Sub-process %s received a segmentation fault.",Args[0]);
1226          else if (WIFEXITED(Status) != 0)
1227             strprintf(dpkg_error, "Sub-process %s returned an error code (%u)",Args[0],WEXITSTATUS(Status));
1228          else
1229             strprintf(dpkg_error, "Sub-process %s exited unexpectedly",Args[0]);
1230
1231          if(dpkg_error.size() > 0)
1232             _error->Error(dpkg_error.c_str());
1233
1234          if(stopOnError)
1235          {
1236             CloseLog();
1237             return false;
1238          }
1239       }
1240    }
1241    CloseLog();
1242
1243    if (RunScripts("DPkg::Post-Invoke") == false)
1244       return false;
1245
1246    Cache.writeStateFile(NULL);
1247    return true;
1248 }
1249                                                                         /*}}}*/
1250 // pkgDpkgPM::Reset - Dump the contents of the command list             /*{{{*/
1251 // ---------------------------------------------------------------------
1252 /* */
1253 void pkgDPkgPM::Reset()
1254 {
1255    List.erase(List.begin(),List.end());
1256 }
1257                                                                         /*}}}*/
1258 // pkgDpkgPM::WriteApportReport - write out error report pkg failure    /*{{{*/
1259 // ---------------------------------------------------------------------
1260 /* */
1261 void pkgDPkgPM::WriteApportReport(const char *pkgpath, const char *errormsg)
1262 {
1263    string pkgname, reportfile, srcpkgname, pkgver, arch;
1264    string::size_type pos;
1265    FILE *report;
1266
1267    if (_config->FindB("Dpkg::ApportFailureReport", false) == false)
1268    {
1269       std::clog << "configured to not write apport reports" << std::endl;
1270       return;
1271    }
1272
1273    // only report the first errors
1274    if(pkgFailures > _config->FindI("APT::Apport::MaxReports", 3))
1275    {
1276       std::clog << _("No apport report written because MaxReports is reached already") << std::endl;
1277       return;
1278    }
1279
1280    // check if its not a follow up error
1281    const char *needle = dgettext("dpkg", "dependency problems - leaving unconfigured");
1282    if(strstr(errormsg, needle) != NULL) {
1283       std::clog << _("No apport report written because the error message indicates its a followup error from a previous failure.") << std::endl;
1284       return;
1285    }
1286
1287    // do not report disk-full failures
1288    if(strstr(errormsg, strerror(ENOSPC)) != NULL) {
1289       std::clog << _("No apport report written because the error message indicates a disk full error") << std::endl;
1290       return;
1291    }
1292
1293    // do not report out-of-memory failures
1294    if(strstr(errormsg, strerror(ENOMEM)) != NULL) {
1295       std::clog << _("No apport report written because the error message indicates a out of memory error") << std::endl;
1296       return;
1297    }
1298
1299    // do not report dpkg I/O errors
1300    // XXX - this message is localized, but this only matches the English version.  This is better than nothing.
1301    if(strstr(errormsg, "short read in buffer_copy (")) {
1302       std::clog << _("No apport report written because the error message indicates a dpkg I/O error") << std::endl;
1303       return;
1304    }
1305
1306    // get the pkgname and reportfile
1307    pkgname = flNotDir(pkgpath);
1308    pos = pkgname.find('_');
1309    if(pos != string::npos)
1310       pkgname = pkgname.substr(0, pos);
1311
1312    // find the package versin and source package name
1313    pkgCache::PkgIterator Pkg = Cache.FindPkg(pkgname);
1314    if (Pkg.end() == true)
1315       return;
1316    pkgCache::VerIterator Ver = Cache.GetCandidateVer(Pkg);
1317    if (Ver.end() == true)
1318       return;
1319    pkgver = Ver.VerStr() == NULL ? "unknown" : Ver.VerStr();
1320    pkgRecords Recs(Cache);
1321    pkgRecords::Parser &Parse = Recs.Lookup(Ver.FileList());
1322    srcpkgname = Parse.SourcePkg();
1323    if(srcpkgname.empty())
1324       srcpkgname = pkgname;
1325
1326    // if the file exists already, we check:
1327    // - if it was reported already (touched by apport).
1328    //   If not, we do nothing, otherwise
1329    //    we overwrite it. This is the same behaviour as apport
1330    // - if we have a report with the same pkgversion already
1331    //   then we skip it
1332    reportfile = flCombine("/var/crash",pkgname+".0.crash");
1333    if(FileExists(reportfile))
1334    {
1335       struct stat buf;
1336       char strbuf[255];
1337
1338       // check atime/mtime
1339       stat(reportfile.c_str(), &buf);
1340       if(buf.st_mtime > buf.st_atime)
1341          return;
1342
1343       // check if the existing report is the same version
1344       report = fopen(reportfile.c_str(),"r");
1345       while(fgets(strbuf, sizeof(strbuf), report) != NULL)
1346       {
1347          if(strstr(strbuf,"Package:") == strbuf)
1348          {
1349             char pkgname[255], version[255];
1350             if(sscanf(strbuf, "Package: %s %s", pkgname, version) == 2)
1351                if(strcmp(pkgver.c_str(), version) == 0)
1352                {
1353                   fclose(report);
1354                   return;
1355                }
1356          }
1357       }
1358       fclose(report);
1359    }
1360
1361    // now write the report
1362    arch = _config->Find("APT::Architecture");
1363    report = fopen(reportfile.c_str(),"w");
1364    if(report == NULL)
1365       return;
1366    if(_config->FindB("DPkgPM::InitialReportOnly",false) == true)
1367       chmod(reportfile.c_str(), 0);
1368    else
1369       chmod(reportfile.c_str(), 0600);
1370    fprintf(report, "ProblemType: Package\n");
1371    fprintf(report, "Architecture: %s\n", arch.c_str());
1372    time_t now = time(NULL);
1373    fprintf(report, "Date: %s" , ctime(&now));
1374    fprintf(report, "Package: %s %s\n", pkgname.c_str(), pkgver.c_str());
1375    fprintf(report, "SourcePackage: %s\n", srcpkgname.c_str());
1376    fprintf(report, "ErrorMessage:\n %s\n", errormsg);
1377
1378    // ensure that the log is flushed
1379    if(term_out)
1380       fflush(term_out);
1381
1382    // attach terminal log it if we have it
1383    string logfile_name = _config->FindFile("Dir::Log::Terminal");
1384    if (!logfile_name.empty())
1385    {
1386       FILE *log = NULL;
1387       char buf[1024];
1388
1389       fprintf(report, "DpkgTerminalLog:\n");
1390       log = fopen(logfile_name.c_str(),"r");
1391       if(log != NULL)
1392       {
1393          while( fgets(buf, sizeof(buf), log) != NULL)
1394             fprintf(report, " %s", buf);
1395          fclose(log);
1396       }
1397    }
1398
1399    // log the ordering
1400    const char *ops_str[] = {"Install", "Configure","Remove","Purge"};
1401    fprintf(report, "AptOrdering:\n");
1402    for (vector<Item>::iterator I = List.begin(); I != List.end(); I++)
1403       fprintf(report, " %s: %s\n", (*I).Pkg.Name(), ops_str[(*I).Op]);
1404
1405    // attach dmesg log (to learn about segfaults)
1406    if (FileExists("/bin/dmesg"))
1407    {
1408       FILE *log = NULL;
1409       char buf[1024];
1410
1411       fprintf(report, "Dmesg:\n");
1412       log = popen("/bin/dmesg","r");
1413       if(log != NULL)
1414       {
1415          while( fgets(buf, sizeof(buf), log) != NULL)
1416             fprintf(report, " %s", buf);
1417          fclose(log);
1418       }
1419    }
1420
1421    // attach df -l log (to learn about filesystem status)
1422    if (FileExists("/bin/df"))
1423    {
1424       FILE *log = NULL;
1425       char buf[1024];
1426
1427       fprintf(report, "Df:\n");
1428       log = popen("/bin/df -l","r");
1429       if(log != NULL)
1430       {
1431          while( fgets(buf, sizeof(buf), log) != NULL)
1432             fprintf(report, " %s", buf);
1433          fclose(log);
1434       }
1435    }
1436
1437    fclose(report);
1438
1439 }
1440                                                                         /*}}}*/