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 #ifdef __GNUG__
  12 #pragma implementation "apt-pkg/dpkgpm.h"
  13 #endif
  14 #include <apt-pkg/dpkgpm.h>
  15 #include <apt-pkg/error.h>
  16 #include <apt-pkg/configuration.h>
  17 #include <apt-pkg/depcache.h>
  18 #include <apt-pkg/pkgrecords.h>
  19 #include <apt-pkg/strutl.h>
  20
  21 #include <unistd.h>
  22 #include <stdlib.h>
  23 #include <fcntl.h>
  24 #include <sys/types.h>
  25 #include <sys/wait.h>
  26 #include <signal.h>
  27 #include <errno.h>
  28 #include <stdio.h>
  29 #include <sstream>
  30 #include <map>
  31
  32 #include <config.h>
  33 #include <apti18n.h>
  34                                                                         /*}}}*/
  35
  36 using namespace std;
  37
  38 // DPkgPM::pkgDPkgPM - Constructor                                      /*{{{*/
  39 // ---------------------------------------------------------------------
  40 /* */
  41 pkgDPkgPM::pkgDPkgPM(pkgDepCache *Cache)
  42    : pkgPackageManager(Cache), pkgFailures(0)
  43 {
  44 }
  45                                                                         /*}}}*/
  46 // DPkgPM::pkgDPkgPM - Destructor                                       /*{{{*/
  47 // ---------------------------------------------------------------------
  48 /* */
  49 pkgDPkgPM::~pkgDPkgPM()
  50 {
  51 }
  52                                                                         /*}}}*/
  53 // DPkgPM::Install - Install a package                                  /*{{{*/
  54 // ---------------------------------------------------------------------
  55 /* Add an install operation to the sequence list */
  56 bool pkgDPkgPM::Install(PkgIterator Pkg,string File)
  57 {
  58    if (File.empty() == true || Pkg.end() == true)
  59       return _error->Error("Internal Error, No file name for %s",Pkg.Name());
  60
  61    List.push_back(Item(Item::Install,Pkg,File));
  62    return true;
  63 }
  64                                                                         /*}}}*/
  65 // DPkgPM::Configure - Configure a package                              /*{{{*/
  66 // ---------------------------------------------------------------------
  67 /* Add a configure operation to the sequence list */
  68 bool pkgDPkgPM::Configure(PkgIterator Pkg)
  69 {
  70    if (Pkg.end() == true)
  71       return false;
  72
  73    List.push_back(Item(Item::Configure,Pkg));
  74    return true;
  75 }
  76                                                                         /*}}}*/
  77 // DPkgPM::Remove - Remove a package                                    /*{{{*/
  78 // ---------------------------------------------------------------------
  79 /* Add a remove operation to the sequence list */
  80 bool pkgDPkgPM::Remove(PkgIterator Pkg,bool Purge)
  81 {
  82    if (Pkg.end() == true)
  83       return false;
  84
  85    if (Purge == true)
  86       List.push_back(Item(Item::Purge,Pkg));
  87    else
  88       List.push_back(Item(Item::Remove,Pkg));
  89    return true;
  90 }
  91                                                                         /*}}}*/
  92 // DPkgPM::RunScripts - Run a set of scripts                            /*{{{*/
  93 // ---------------------------------------------------------------------
  94 /* This looks for a list of script sto run from the configuration file,
  95    each one is run with system from a forked child. */
  96 bool pkgDPkgPM::RunScripts(const char *Cnf)
  97 {
  98    Configuration::Item const *Opts = _config->Tree(Cnf);
  99    if (Opts == 0 || Opts->Child == 0)
 100       return true;
 101    Opts = Opts->Child;
 102
 103    // Fork for running the system calls
 104    pid_t Child = ExecFork();
 105
 106    // This is the child
 107    if (Child == 0)
 108    {
 109       if (chdir("/tmp/") != 0)
 110          _exit(100);
 111
 112       unsigned int Count = 1;
 113       for (; Opts != 0; Opts = Opts->Next, Count++)
 114       {
 115          if (Opts->Value.empty() == true)
 116             continue;
 117
 118          if (system(Opts->Value.c_str()) != 0)
 119             _exit(100+Count);
 120       }
 121       _exit(0);
 122    }
 123
 124    // Wait for the child
 125    int Status = 0;
 126    while (waitpid(Child,&Status,0) != Child)
 127    {
 128       if (errno == EINTR)
 129          continue;
 130       return _error->Errno("waitpid","Couldn't wait for subprocess");
 131    }
 132
 133    // Restore sig int/quit
 134    signal(SIGQUIT,SIG_DFL);
 135    signal(SIGINT,SIG_DFL);
 136
 137    // Check for an error code.
 138    if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
 139    {
 140       unsigned int Count = WEXITSTATUS(Status);
 141       if (Count > 100)
 142       {
 143          Count -= 100;
 144          for (; Opts != 0 && Count != 1; Opts = Opts->Next, Count--);
 145          _error->Error("Problem executing scripts %s '%s'",Cnf,Opts->Value.c_str());
 146       }
 147
 148       return _error->Error("Sub-process returned an error code");
 149    }
 150
 151    return true;
 152 }
 153                                                                         /*}}}*/
 154 // DPkgPM::SendV2Pkgs - Send version 2 package info                     /*{{{*/
 155 // ---------------------------------------------------------------------
 156 /* This is part of the helper script communication interface, it sends
 157    very complete information down to the other end of the pipe.*/
 158 bool pkgDPkgPM::SendV2Pkgs(FILE *F)
 159 {
 160    fprintf(F,"VERSION 2\n");
 161
 162    /* Write out all of the configuration directives by walking the
 163       configuration tree */
 164    const Configuration::Item *Top = _config->Tree(0);
 165    for (; Top != 0;)
 166    {
 167       if (Top->Value.empty() == false)
 168       {
 169          fprintf(F,"%s=%s\n",
 170                  QuoteString(Top->FullTag(),"=\"\n").c_str(),
 171                  QuoteString(Top->Value,"\n").c_str());
 172       }
 173
 174       if (Top->Child != 0)
 175       {
 176          Top = Top->Child;
 177          continue;
 178       }
 179
 180       while (Top != 0 && Top->Next == 0)
 181          Top = Top->Parent;
 182       if (Top != 0)
 183          Top = Top->Next;
 184    }
 185    fprintf(F,"\n");
 186
 187    // Write out the package actions in order.
 188    for (vector<Item>::iterator I = List.begin(); I != List.end(); I++)
 189    {
 190       pkgDepCache::StateCache &S = Cache[I->Pkg];
 191
 192       fprintf(F,"%s ",I->Pkg.Name());
 193       // Current version
 194       if (I->Pkg->CurrentVer == 0)
 195          fprintf(F,"- ");
 196       else
 197          fprintf(F,"%s ",I->Pkg.CurrentVer().VerStr());
 198
 199       // Show the compare operator
 200       // Target version
 201       if (S.InstallVer != 0)
 202       {
 203          int Comp = 2;
 204          if (I->Pkg->CurrentVer != 0)
 205             Comp = S.InstVerIter(Cache).CompareVer(I->Pkg.CurrentVer());
 206          if (Comp < 0)
 207             fprintf(F,"> ");
 208          if (Comp == 0)
 209             fprintf(F,"= ");
 210          if (Comp > 0)
 211             fprintf(F,"< ");
 212          fprintf(F,"%s ",S.InstVerIter(Cache).VerStr());
 213       }
 214       else
 215          fprintf(F,"> - ");
 216
 217       // Show the filename/operation
 218       if (I->Op == Item::Install)
 219       {
 220          // No errors here..
 221          if (I->File[0] != '/')
 222             fprintf(F,"**ERROR**\n");
 223          else
 224             fprintf(F,"%s\n",I->File.c_str());
 225       }
 226       if (I->Op == Item::Configure)
 227          fprintf(F,"**CONFIGURE**\n");
 228       if (I->Op == Item::Remove ||
 229           I->Op == Item::Purge)
 230          fprintf(F,"**REMOVE**\n");
 231
 232       if (ferror(F) != 0)
 233          return false;
 234    }
 235    return true;
 236 }
 237                                                                         /*}}}*/
 238 // DPkgPM::RunScriptsWithPkgs - Run scripts with package names on stdin /*{{{*/
 239 // ---------------------------------------------------------------------
 240 /* This looks for a list of scripts to run from the configuration file
 241    each one is run and is fed on standard input a list of all .deb files
 242    that are due to be installed. */
 243 bool pkgDPkgPM::RunScriptsWithPkgs(const char *Cnf)
 244 {
 245    Configuration::Item const *Opts = _config->Tree(Cnf);
 246    if (Opts == 0 || Opts->Child == 0)
 247       return true;
 248    Opts = Opts->Child;
 249
 250    unsigned int Count = 1;
 251    for (; Opts != 0; Opts = Opts->Next, Count++)
 252    {
 253       if (Opts->Value.empty() == true)
 254          continue;
 255
 256       // Determine the protocol version
 257       string OptSec = Opts->Value;
 258       string::size_type Pos;
 259       if ((Pos = OptSec.find(' ')) == string::npos || Pos == 0)
 260          Pos = OptSec.length();
 261       OptSec = "DPkg::Tools::Options::" + string(Opts->Value.c_str(),Pos);
 262
 263       unsigned int Version = _config->FindI(OptSec+"::Version",1);
 264
 265       // Create the pipes
 266       int Pipes[2];
 267       if (pipe(Pipes) != 0)
 268          return _error->Errno("pipe","Failed to create IPC pipe to subprocess");
 269       SetCloseExec(Pipes[0],true);
 270       SetCloseExec(Pipes[1],true);
 271
 272       // Purified Fork for running the script
 273       pid_t Process = ExecFork();
 274       if (Process == 0)
 275       {
 276          // Setup the FDs
 277          dup2(Pipes[0],STDIN_FILENO);
 278          SetCloseExec(STDOUT_FILENO,false);
 279          SetCloseExec(STDIN_FILENO,false);
 280          SetCloseExec(STDERR_FILENO,false);
 281
 282          const char *Args[4];
 283          Args[0] = "/bin/sh";
 284          Args[1] = "-c";
 285          Args[2] = Opts->Value.c_str();
 286          Args[3] = 0;
 287          execv(Args[0],(char **)Args);
 288          _exit(100);
 289       }
 290       close(Pipes[0]);
 291       FILE *F = fdopen(Pipes[1],"w");
 292       if (F == 0)
 293          return _error->Errno("fdopen","Faild to open new FD");
 294
 295       // Feed it the filenames.
 296       bool Die = false;
 297       if (Version <= 1)
 298       {
 299          for (vector<Item>::iterator I = List.begin(); I != List.end(); I++)
 300          {
 301             // Only deal with packages to be installed from .deb
 302             if (I->Op != Item::Install)
 303                continue;
 304
 305             // No errors here..
 306             if (I->File[0] != '/')
 307                continue;
 308
 309             /* Feed the filename of each package that is pending install
 310                into the pipe. */
 311             fprintf(F,"%s\n",I->File.c_str());
 312             if (ferror(F) != 0)
 313             {
 314                Die = true;
 315                break;
 316             }
 317          }
 318       }
 319       else
 320          Die = !SendV2Pkgs(F);
 321
 322       fclose(F);
 323
 324       // Clean up the sub process
 325       if (ExecWait(Process,Opts->Value.c_str()) == false)
 326          return _error->Error("Failure running script %s",Opts->Value.c_str());
 327    }
 328
 329    return true;
 330 }
 331                                                                         /*}}}*/
 332 // DPkgPM::Go - Run the sequence                                        /*{{{*/
 333 // ---------------------------------------------------------------------
 334 /* This globs the operations and calls dpkg
 335  *
 336  * If it is called with "OutStatusFd" set to a valid file descriptor
 337  * apt will report the install progress over this fd. It maps the
 338  * dpkg states a package goes through to human readable (and i10n-able)
 339  * names and calculates a percentage for each step.
 340 */
 341 bool pkgDPkgPM::Go(int OutStatusFd)
 342 {
 343    unsigned int MaxArgs = _config->FindI("Dpkg::MaxArgs",8*1024);
 344    unsigned int MaxArgBytes = _config->FindI("Dpkg::MaxArgBytes",32*1024);
 345
 346    if (RunScripts("DPkg::Pre-Invoke") == false)
 347       return false;
 348
 349    if (RunScriptsWithPkgs("DPkg::Pre-Install-Pkgs") == false)
 350       return false;
 351
 352    // prepare the progress reporting
 353    int Done = 0;
 354    int Total = 0;
 355    // map the dpkg states to the operations that are performed
 356    // (this is sorted in the same way as Item::Ops)
 357    static const struct DpkgState DpkgStatesOpMap[][5] = {
 358       // Install operation
 359       {
 360          {"half-installed", N_("Preparing %s")},
 361          {"unpacked", N_("Unpacking %s") },
 362          {NULL, NULL}
 363       },
 364       // Configure operation
 365       {
 366          {"unpacked",N_("Preparing to configure %s") },
 367          {"half-configured", N_("Configuring %s") },
 368          { "installed", N_("Installed %s")},
 369          {NULL, NULL}
 370       },
 371       // Remove operation
 372       {
 373          {"half-configured", N_("Preparing for removal of %s")},
 374          {"half-installed", N_("Removing %s")},
 375          {"config-files",  N_("Removed %s")},
 376          {NULL, NULL}
 377       },
 378       // Purge operation
 379       {
 380          {"config-files", N_("Preparing to completely remove %s")},
 381          {"not-installed", N_("Completely removed %s")},
 382          {NULL, NULL}
 383       },
 384    };
 385
 386    // the dpkg states that the pkg will run through, the string is
 387    // the package, the vector contains the dpkg states that the package
 388    // will go through
 389    map<string,vector<struct DpkgState> > PackageOps;
 390    // the dpkg states that are already done; the string is the package
 391    // the int is the state that is already done (e.g. a package that is
 392    // going to be install is already in state "half-installed")
 393    map<string,int> PackageOpsDone;
 394
 395    // init the PackageOps map, go over the list of packages that
 396    // that will be [installed|configured|removed|purged] and add
 397    // them to the PackageOps map (the dpkg states it goes through)
 398    // and the PackageOpsTranslations (human readable strings)
 399    for (vector<Item>::iterator I = List.begin(); I != List.end();I++)
 400    {
 401       string name = (*I).Pkg.Name();
 402       PackageOpsDone[name] = 0;
 403       for(int i=0; (DpkgStatesOpMap[(*I).Op][i]).state != NULL;  i++)
 404       {
 405          PackageOps[name].push_back(DpkgStatesOpMap[(*I).Op][i]);
 406          Total++;
 407       }
 408    }
 409
 410    // this loop is runs once per operation
 411    for (vector<Item>::iterator I = List.begin(); I != List.end();)
 412    {
 413       vector<Item>::iterator J = I;
 414       for (; J != List.end() && J->Op == I->Op; J++);
 415
 416       // Generate the argument list
 417       const char *Args[MaxArgs + 50];
 418       if (J - I > (signed)MaxArgs)
 419          J = I + MaxArgs;
 420
 421       unsigned int n = 0;
 422       unsigned long Size = 0;
 423       string Tmp = _config->Find("Dir::Bin::dpkg","dpkg");
 424       Args[n++] = Tmp.c_str();
 425       Size += strlen(Args[n-1]);
 426
 427       // Stick in any custom dpkg options
 428       Configuration::Item const *Opts = _config->Tree("DPkg::Options");
 429       if (Opts != 0)
 430       {
 431          Opts = Opts->Child;
 432          for (; Opts != 0; Opts = Opts->Next)
 433          {
 434             if (Opts->Value.empty() == true)
 435                continue;
 436             Args[n++] = Opts->Value.c_str();
 437             Size += Opts->Value.length();
 438          }
 439       }
 440
 441       char status_fd_buf[20];
 442       int fd[2];
 443       pipe(fd);
 444
 445       Args[n++] = "--status-fd";
 446       Size += strlen(Args[n-1]);
 447       snprintf(status_fd_buf,sizeof(status_fd_buf),"%i", fd[1]);
 448       Args[n++] = status_fd_buf;
 449       Size += strlen(Args[n-1]);
 450
 451       switch (I->Op)
 452       {
 453          case Item::Remove:
 454          Args[n++] = "--force-depends";
 455          Size += strlen(Args[n-1]);
 456          Args[n++] = "--force-remove-essential";
 457          Size += strlen(Args[n-1]);
 458          Args[n++] = "--remove";
 459          Size += strlen(Args[n-1]);
 460          break;
 461
 462          case Item::Purge:
 463          Args[n++] = "--force-depends";
 464          Size += strlen(Args[n-1]);
 465          Args[n++] = "--force-remove-essential";
 466          Size += strlen(Args[n-1]);
 467          Args[n++] = "--purge";
 468          Size += strlen(Args[n-1]);
 469          break;
 470
 471          case Item::Configure:
 472          Args[n++] = "--configure";
 473          Size += strlen(Args[n-1]);
 474          break;
 475
 476          case Item::Install:
 477          Args[n++] = "--unpack";
 478          Size += strlen(Args[n-1]);
 479          Args[n++] = "--auto-deconfigure";
 480          Size += strlen(Args[n-1]);
 481          break;
 482       }
 483
 484       // Write in the file or package names
 485       if (I->Op == Item::Install)
 486       {
 487          for (;I != J && Size < MaxArgBytes; I++)
 488          {
 489             if (I->File[0] != '/')
 490                return _error->Error("Internal Error, Pathname to install is not absolute '%s'",I->File.c_str());
 491             Args[n++] = I->File.c_str();
 492             Size += strlen(Args[n-1]);
 493          }
 494       }
 495       else
 496       {
 497          for (;I != J && Size < MaxArgBytes; I++)
 498          {
 499             Args[n++] = I->Pkg.Name();
 500             Size += strlen(Args[n-1]);
 501          }
 502       }
 503       Args[n] = 0;
 504       J = I;
 505
 506       if (_config->FindB("Debug::pkgDPkgPM",false) == true)
 507       {
 508          for (unsigned int k = 0; k != n; k++)
 509             clog << Args[k] << ' ';
 510          clog << endl;
 511          continue;
 512       }
 513
 514       cout << flush;
 515       clog << flush;
 516       cerr << flush;
 517
 518       /* Mask off sig int/quit. We do this because dpkg also does when
 519          it forks scripts. What happens is that when you hit ctrl-c it sends
 520          it to all processes in the group. Since dpkg ignores the signal
 521          it doesn't die but we do! So we must also ignore it */
 522       sighandler_t old_SIGQUIT = signal(SIGQUIT,SIG_IGN);
 523       sighandler_t old_SIGINT = signal(SIGINT,SIG_IGN);
 524
 525        // Fork dpkg
 526       pid_t Child;
 527       _config->Set("APT::Keep-Fds::",fd[1]);
 528       Child = ExecFork();
 529
 530       // This is the child
 531       if (Child == 0)
 532       {
 533          close(fd[0]); // close the read end of the pipe
 534
 535          if (chdir(_config->FindDir("DPkg::Run-Directory","/").c_str()) != 0)
 536             _exit(100);
 537
 538          if (_config->FindB("DPkg::FlushSTDIN",true) == true && isatty(STDIN_FILENO))
 539          {
 540             int Flags,dummy;
 541             if ((Flags = fcntl(STDIN_FILENO,F_GETFL,dummy)) < 0)
 542                _exit(100);
 543
 544             // Discard everything in stdin before forking dpkg
 545             if (fcntl(STDIN_FILENO,F_SETFL,Flags | O_NONBLOCK) < 0)
 546                _exit(100);
 547
 548             while (read(STDIN_FILENO,&dummy,1) == 1);
 549
 550             if (fcntl(STDIN_FILENO,F_SETFL,Flags & (~(long)O_NONBLOCK)) < 0)
 551                _exit(100);
 552          }
 553
 554          /* No Job Control Stop Env is a magic dpkg var that prevents it
 555             from using sigstop */
 556          putenv("DPKG_NO_TSTP=yes");
 557          execvp(Args[0],(char **)Args);
 558          cerr << "Could not exec dpkg!" << endl;
 559          _exit(100);
 560       }
 561
 562       // clear the Keep-Fd again
 563       _config->Clear("APT::Keep-Fds",fd[1]);
 564
 565       // Wait for dpkg
 566       int Status = 0;
 567
 568       // we read from dpkg here
 569       int _dpkgin = fd[0];
 570       fcntl(_dpkgin, F_SETFL, O_NONBLOCK);
 571       close(fd[1]);                        // close the write end of the pipe
 572
 573       // the read buffers for the communication with dpkg
 574       char line[1024] = {0,};
 575       char buf[2] = {0,0};
 576
 577       // the result of the waitpid call
 578       int res;
 579
 580       while ((res=waitpid(Child,&Status, WNOHANG)) != Child) {
 581          if(res < 0) {
 582             // FIXME: move this to a function or something, looks ugly here
 583             // error handling, waitpid returned -1
 584             if (errno == EINTR)
 585                continue;
 586             RunScripts("DPkg::Post-Invoke");
 587
 588             // Restore sig int/quit
 589             signal(SIGQUIT,old_SIGQUIT);
 590             signal(SIGINT,old_SIGINT);
 591             return _error->Errno("waitpid","Couldn't wait for subprocess");
 592          }
 593
 594          // read a single char, make sure that the read can't block
 595          // (otherwise we may leave zombies)
 596          int len = read(_dpkgin, buf, 1);
 597
 598          // nothing to read, wait a bit for more
 599          if(len <= 0)
 600          {
 601             usleep(1000);
 602             continue;
 603          }
 604
 605          // sanity check (should never happen)
 606          if(strlen(line) >= sizeof(line)-10)
 607          {
 608             _error->Error("got a overlong line from dpkg: '%s'",line);
 609             line[0]=0;
 610          }
 611          // append to line, check if we got a complete line
 612          strcat(line, buf);
 613          if(buf[0] != '\n')
 614             continue;
 615
 616          if (_config->FindB("Debug::pkgDPkgProgressReporting",false) == true)
 617             std::clog << "got from dpkg '" << line << "'" << std::endl;
 618
 619          // the status we output
 620          ostringstream status;
 621
 622          /* dpkg sends strings like this:
 623             'status:   <pkg>:  <pkg  qstate>'
 624             errors look like this:
 625             '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
 626             and conffile-prompt like this
 627             'status: conffile-prompt: conffile : 'current-conffile' 'new-conffile' useredited distedited
 628
 629          */
 630          char* list[5];
 631          //        dpkg sends multiline error messages sometimes (see
 632          //        #374195 for a example. we should support this by
 633          //        either patching dpkg to not send multiline over the
 634          //        statusfd or by rewriting the code here to deal with
 635          //        it. for now we just ignore it and not crash
 636          TokSplitString(':', line, list, sizeof(list)/sizeof(list[0]));
 637          char *pkg = list[1];
 638          char *action = _strstrip(list[2]);
 639          if( pkg == NULL || action == NULL)
 640          {
 641             if (_config->FindB("Debug::pkgDPkgProgressReporting",false) == true)
 642                std::clog << "ignoring line: not enough ':'" << std::endl;
 643             // reset the line buffer
 644             line[0]=0;
 645             continue;
 646          }
 647
 648          if(strncmp(action,"error",strlen("error")) == 0)
 649          {
 650             status << "pmerror:" << list[1]
 651                    << ":"  << (Done/float(Total)*100.0)
 652                    << ":" << list[3]
 653                    << endl;
 654             if(OutStatusFd > 0)
 655                write(OutStatusFd, status.str().c_str(), status.str().size());
 656             line[0]=0;
 657             if (_config->FindB("Debug::pkgDPkgProgressReporting",false) == true)
 658                std::clog << "send: '" << status.str() << "'" << endl;
 659             pkgFailures++;
 660             WriteApportReport(list[1], list[3]);
 661             continue;
 662          }
 663          if(strncmp(action,"conffile",strlen("conffile")) == 0)
 664          {
 665             status << "pmconffile:" << list[1]
 666                    << ":"  << (Done/float(Total)*100.0)
 667                    << ":" << list[3]
 668                    << endl;
 669             if(OutStatusFd > 0)
 670                write(OutStatusFd, status.str().c_str(), status.str().size());
 671             line[0]=0;
 672             if (_config->FindB("Debug::pkgDPkgProgressReporting",false) == true)
 673                std::clog << "send: '" << status.str() << "'" << endl;
 674             continue;
 675          }
 676
 677          vector<struct DpkgState> &states = PackageOps[pkg];
 678          const char *next_action = NULL;
 679          if(PackageOpsDone[pkg] < states.size())
 680             next_action = states[PackageOpsDone[pkg]].state;
 681          // check if the package moved to the next dpkg state
 682          if(next_action && (strcmp(action, next_action) == 0))
 683          {
 684             // only read the translation if there is actually a next
 685             // action
 686             const char *translation = _(states[PackageOpsDone[pkg]].str);
 687             char s[200];
 688             snprintf(s, sizeof(s), translation, pkg);
 689
 690             // we moved from one dpkg state to a new one, report that
 691             PackageOpsDone[pkg]++;
 692             Done++;
 693             // build the status str
 694             status << "pmstatus:" << pkg
 695                    << ":"  << (Done/float(Total)*100.0)
 696                    << ":" << s
 697                    << endl;
 698             if(OutStatusFd > 0)
 699                write(OutStatusFd, status.str().c_str(), status.str().size());
 700             if (_config->FindB("Debug::pkgDPkgProgressReporting",false) == true)
 701                std::clog << "send: '" << status.str() << "'" << endl;
 702
 703          }
 704          if (_config->FindB("Debug::pkgDPkgProgressReporting",false) == true)
 705             std::clog << "(parsed from dpkg) pkg: " << pkg
 706                       << " action: " << action << endl;
 707
 708          // reset the line buffer
 709          line[0]=0;
 710       }
 711       close(_dpkgin);
 712
 713       // Restore sig int/quit
 714       signal(SIGQUIT,old_SIGQUIT);
 715       signal(SIGINT,old_SIGINT);
 716
 717       // Check for an error code.
 718       if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
 719       {
 720          // if it was set to "keep-dpkg-runing" then we won't return
 721          // here but keep the loop going and just report it as a error
 722          // for later
 723          bool stopOnError = _config->FindB("Dpkg::StopOnError",true);
 724
 725          if(stopOnError)
 726             RunScripts("DPkg::Post-Invoke");
 727
 728          if (WIFSIGNALED(Status) != 0 && WTERMSIG(Status) == SIGSEGV)
 729             _error->Error("Sub-process %s received a segmentation fault.",Args[0]);
 730          else if (WIFEXITED(Status) != 0)
 731             _error->Error("Sub-process %s returned an error code (%u)",Args[0],WEXITSTATUS(Status));
 732          else
 733             _error->Error("Sub-process %s exited unexpectedly",Args[0]);
 734
 735          if(stopOnError)
 736             return false;
 737       }
 738    }
 739
 740    if (RunScripts("DPkg::Post-Invoke") == false)
 741       return false;
 742    return true;
 743 }
 744                                                                         /*}}}*/
 745 // pkgDpkgPM::Reset - Dump the contents of the command list             /*{{{*/
 746 // ---------------------------------------------------------------------
 747 /* */
 748 void pkgDPkgPM::Reset()
 749 {
 750    List.erase(List.begin(),List.end());
 751 }
 752                                                                         /*}}}*/
 753 // pkgDpkgPM::WriteApportReport - write out error report pkg failure    /*{{{*/
 754 // ---------------------------------------------------------------------
 755 /* */
 756 void pkgDPkgPM::WriteApportReport(const char *pkgpath, const char *errormsg)
 757 {
 758    string pkgname, reportfile, srcpkgname, pkgver, arch;
 759    string::size_type pos;
 760    FILE *report;
 761
 762    if (_config->FindB("Dpkg::ApportFailureReport",true) == false)
 763       return;
 764
 765    // only report the first error if we are in StopOnError=false mode
 766    // to prevent bogus reports
 767    if((_config->FindB("Dpkg::StopOnError",true) == false) && pkgFailures > 1)
 768       return;
 769
 770    // get the pkgname and reportfile
 771    pkgname = flNotDir(pkgpath);
 772    pos = pkgname.rfind('_');
 773    if(pos != string::npos)
 774       pkgname = string(pkgname, 0, pos);
 775
 776    // find the package versin and source package name
 777    pkgCache::PkgIterator Pkg = Cache.FindPkg(pkgname);
 778    if (Pkg.end() == true)
 779       return;
 780    pkgCache::VerIterator Ver = Cache.GetCandidateVer(Pkg);
 781    pkgver = Ver.VerStr();
 782    if (Ver.end() == true)
 783       return;
 784    pkgRecords Recs(Cache);
 785    pkgRecords::Parser &Parse = Recs.Lookup(Ver.FileList());
 786    srcpkgname = Parse.SourcePkg();
 787    if(srcpkgname.empty())
 788       srcpkgname = pkgname;
 789
 790    // if the file exists already, we check:
 791    // - if it was reported already (touched by apport).
 792    //   If not, we do nothing, otherwise
 793    //    we overwrite it. This is the same behaviour as apport
 794    // - if we have a report with the same pkgversion already
 795    //   then we skip it
 796    reportfile = flCombine("/var/crash",pkgname+".0.crash");
 797    if(FileExists(reportfile))
 798    {
 799       struct stat buf;
 800       char strbuf[255];
 801
 802       // check atime/mtime
 803       stat(reportfile.c_str(), &buf);
 804       if(buf.st_mtime > buf.st_atime)
 805          return;
 806
 807       // check if the existing report is the same version
 808       report = fopen(reportfile.c_str(),"r");
 809       while(fgets(strbuf, sizeof(strbuf), report) != NULL)
 810       {
 811          if(strstr(strbuf,"Package:") == strbuf)
 812          {
 813             char pkgname[255], version[255];
 814             if(sscanf(strbuf, "Package: %s %s", pkgname, version) == 2)
 815                if(strcmp(pkgver.c_str(), version) == 0)
 816                {
 817                   fclose(report);
 818                   return;
 819                }
 820          }
 821       }
 822       fclose(report);
 823    }
 824
 825    // now write the report
 826    arch = _config->Find("APT::Architecture");
 827    report = fopen(reportfile.c_str(),"w");
 828    if(report == NULL)
 829       return;
 830    if(_config->FindB("DPkgPM::InitialReportOnly",false) == true)
 831       chmod(reportfile.c_str(), 0);
 832    else
 833       chmod(reportfile.c_str(), 0600);
 834    fprintf(report, "ProblemType: Package\n");
 835    fprintf(report, "Architecture: %s\n", arch.c_str());
 836    time_t now = time(NULL);
 837    fprintf(report, "Date: %s" , ctime(&now));
 838    fprintf(report, "Package: %s %s\n", pkgname.c_str(), pkgver.c_str());
 839    fprintf(report, "SourcePackage: %s\n", srcpkgname.c_str());
 840    fprintf(report, "ErrorMessage:\n %s\n", errormsg);
 841    fclose(report);
 842 }
 843                                                                         /*}}}*/