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[apt.git] / apt-pkg / deb / dpkgpm.cc
1 // -*- mode: cpp; mode: fold -*-
2 // Description /*{{{*/
3 // $Id: dpkgpm.cc,v 1.28 2004/01/27 02:25:01 mdz Exp $
4 /* ######################################################################
5
6 DPKG Package Manager - Provide an interface to dpkg
7
8 ##################################################################### */
9 /*}}}*/
10 // Includes /*{{{*/
11 #include <config.h>
12
13 #include <apt-pkg/dpkgpm.h>
14 #include <apt-pkg/error.h>
15 #include <apt-pkg/configuration.h>
16 #include <apt-pkg/depcache.h>
17 #include <apt-pkg/pkgrecords.h>
18 #include <apt-pkg/strutl.h>
19 #include <apt-pkg/fileutl.h>
20 #include <apt-pkg/cachefile.h>
21 #include <apt-pkg/packagemanager.h>
22 #include <apt-pkg/iprogress.h>
23
24 #include <unistd.h>
25 #include <stdlib.h>
26 #include <fcntl.h>
27 #include <sys/select.h>
28 #include <sys/stat.h>
29 #include <sys/types.h>
30 #include <sys/wait.h>
31 #include <signal.h>
32 #include <errno.h>
33 #include <string.h>
34 #include <stdio.h>
35 #include <string.h>
36 #include <algorithm>
37 #include <sstream>
38 #include <map>
39 #include <pwd.h>
40 #include <grp.h>
41 #include <iomanip>
42
43 #include <termios.h>
44 #include <unistd.h>
45 #include <sys/ioctl.h>
46 #include <pty.h>
47
48 #include <apti18n.h>
49 /*}}}*/
50
51 using namespace std;
52
53 class pkgDPkgPMPrivate
54 {
55 public:
56 pkgDPkgPMPrivate() : stdin_is_dev_null(false), dpkgbuf_pos(0),
57 term_out(NULL), history_out(NULL),
58 last_reported_progress(0.0), progress(NULL)
59 {
60 dpkgbuf[0] = '\0';
61 }
62 ~pkgDPkgPMPrivate()
63 {
64 }
65
66 bool stdin_is_dev_null;
67 // the buffer we use for the dpkg status-fd reading
68 char dpkgbuf[1024];
69 int dpkgbuf_pos;
70 FILE *term_out;
71 FILE *history_out;
72 string dpkg_error;
73
74 float last_reported_progress;
75 APT::Progress::PackageManager *progress;
76 };
77
78 namespace
79 {
80 // Maps the dpkg "processing" info to human readable names. Entry 0
81 // of each array is the key, entry 1 is the value.
82 const std::pair<const char *, const char *> PackageProcessingOps[] = {
83 std::make_pair("install", N_("Installing %s")),
84 std::make_pair("configure", N_("Configuring %s")),
85 std::make_pair("remove", N_("Removing %s")),
86 std::make_pair("purge", N_("Completely removing %s")),
87 std::make_pair("disappear", N_("Noting disappearance of %s")),
88 std::make_pair("trigproc", N_("Running post-installation trigger %s"))
89 };
90
91 const std::pair<const char *, const char *> * const PackageProcessingOpsBegin = PackageProcessingOps;
92 const std::pair<const char *, const char *> * const PackageProcessingOpsEnd = PackageProcessingOps + sizeof(PackageProcessingOps) / sizeof(PackageProcessingOps[0]);
93
94 // Predicate to test whether an entry in the PackageProcessingOps
95 // array matches a string.
96 class MatchProcessingOp
97 {
98 const char *target;
99
100 public:
101 MatchProcessingOp(const char *the_target)
102 : target(the_target)
103 {
104 }
105
106 bool operator()(const std::pair<const char *, const char *> &pair) const
107 {
108 return strcmp(pair.first, target) == 0;
109 }
110 };
111 }
112
113 /* helper function to ionice the given PID
114
115 there is no C header for ionice yet - just the syscall interface
116 so we use the binary from util-linux
117 */
118 static bool
119 ionice(int PID)
120 {
121 if (!FileExists("/usr/bin/ionice"))
122 return false;
123 pid_t Process = ExecFork();
124 if (Process == 0)
125 {
126 char buf[32];
127 snprintf(buf, sizeof(buf), "-p%d", PID);
128 const char *Args[4];
129 Args[0] = "/usr/bin/ionice";
130 Args[1] = "-c3";
131 Args[2] = buf;
132 Args[3] = 0;
133 execv(Args[0], (char **)Args);
134 }
135 return ExecWait(Process, "ionice");
136 }
137
138 // dpkgChrootDirectory - chrooting for dpkg if needed /*{{{*/
139 static void dpkgChrootDirectory()
140 {
141 std::string const chrootDir = _config->FindDir("DPkg::Chroot-Directory");
142 if (chrootDir == "/")
143 return;
144 std::cerr << "Chrooting into " << chrootDir << std::endl;
145 if (chroot(chrootDir.c_str()) != 0)
146 _exit(100);
147 if (chdir("/") != 0)
148 _exit(100);
149 }
150 /*}}}*/
151
152
153 // FindNowVersion - Helper to find a Version in "now" state /*{{{*/
154 // ---------------------------------------------------------------------
155 /* This is helpful when a package is no longer installed but has residual
156 * config files
157 */
158 static
159 pkgCache::VerIterator FindNowVersion(const pkgCache::PkgIterator &Pkg)
160 {
161 pkgCache::VerIterator Ver;
162 for (Ver = Pkg.VersionList(); Ver.end() == false; ++Ver)
163 {
164 pkgCache::VerFileIterator Vf = Ver.FileList();
165 pkgCache::PkgFileIterator F = Vf.File();
166 for (F = Vf.File(); F.end() == false; ++F)
167 {
168 if (F && F.Archive())
169 {
170 if (strcmp(F.Archive(), "now"))
171 return Ver;
172 }
173 }
174 }
175 return Ver;
176 }
177 /*}}}*/
178
179 // DPkgPM::pkgDPkgPM - Constructor /*{{{*/
180 // ---------------------------------------------------------------------
181 /* */
182 pkgDPkgPM::pkgDPkgPM(pkgDepCache *Cache)
183 : pkgPackageManager(Cache), PackagesDone(0), PackagesTotal(0)
184 {
185 d = new pkgDPkgPMPrivate();
186 }
187 /*}}}*/
188 // DPkgPM::pkgDPkgPM - Destructor /*{{{*/
189 // ---------------------------------------------------------------------
190 /* */
191 pkgDPkgPM::~pkgDPkgPM()
192 {
193 delete d;
194 }
195 /*}}}*/
196 // DPkgPM::Install - Install a package /*{{{*/
197 // ---------------------------------------------------------------------
198 /* Add an install operation to the sequence list */
199 bool pkgDPkgPM::Install(PkgIterator Pkg,string File)
200 {
201 if (File.empty() == true || Pkg.end() == true)
202 return _error->Error("Internal Error, No file name for %s",Pkg.FullName().c_str());
203
204 // If the filename string begins with DPkg::Chroot-Directory, return the
205 // substr that is within the chroot so dpkg can access it.
206 string const chrootdir = _config->FindDir("DPkg::Chroot-Directory","/");
207 if (chrootdir != "/" && File.find(chrootdir) == 0)
208 {
209 size_t len = chrootdir.length();
210 if (chrootdir.at(len - 1) == '/')
211 len--;
212 List.push_back(Item(Item::Install,Pkg,File.substr(len)));
213 }
214 else
215 List.push_back(Item(Item::Install,Pkg,File));
216
217 return true;
218 }
219 /*}}}*/
220 // DPkgPM::Configure - Configure a package /*{{{*/
221 // ---------------------------------------------------------------------
222 /* Add a configure operation to the sequence list */
223 bool pkgDPkgPM::Configure(PkgIterator Pkg)
224 {
225 if (Pkg.end() == true)
226 return false;
227
228 List.push_back(Item(Item::Configure, Pkg));
229
230 // Use triggers for config calls if we configure "smart"
231 // as otherwise Pre-Depends will not be satisfied, see #526774
232 if (_config->FindB("DPkg::TriggersPending", false) == true)
233 List.push_back(Item(Item::TriggersPending, PkgIterator()));
234
235 return true;
236 }
237 /*}}}*/
238 // DPkgPM::Remove - Remove a package /*{{{*/
239 // ---------------------------------------------------------------------
240 /* Add a remove operation to the sequence list */
241 bool pkgDPkgPM::Remove(PkgIterator Pkg,bool Purge)
242 {
243 if (Pkg.end() == true)
244 return false;
245
246 if (Purge == true)
247 List.push_back(Item(Item::Purge,Pkg));
248 else
249 List.push_back(Item(Item::Remove,Pkg));
250 return true;
251 }
252 /*}}}*/
253 // DPkgPM::SendPkgInfo - Send info for install-pkgs hook /*{{{*/
254 // ---------------------------------------------------------------------
255 /* This is part of the helper script communication interface, it sends
256 very complete information down to the other end of the pipe.*/
257 bool pkgDPkgPM::SendV2Pkgs(FILE *F)
258 {
259 return SendPkgsInfo(F, 2);
260 }
261 bool pkgDPkgPM::SendPkgsInfo(FILE * const F, unsigned int const &Version)
262 {
263 // This version of APT supports only v3, so don't sent higher versions
264 if (Version <= 3)
265 fprintf(F,"VERSION %u\n", Version);
266 else
267 fprintf(F,"VERSION 3\n");
268
269 /* Write out all of the configuration directives by walking the
270 configuration tree */
271 const Configuration::Item *Top = _config->Tree(0);
272 for (; Top != 0;)
273 {
274 if (Top->Value.empty() == false)
275 {
276 fprintf(F,"%s=%s\n",
277 QuoteString(Top->FullTag(),"=\"\n").c_str(),
278 QuoteString(Top->Value,"\n").c_str());
279 }
280
281 if (Top->Child != 0)
282 {
283 Top = Top->Child;
284 continue;
285 }
286
287 while (Top != 0 && Top->Next == 0)
288 Top = Top->Parent;
289 if (Top != 0)
290 Top = Top->Next;
291 }
292 fprintf(F,"\n");
293
294 // Write out the package actions in order.
295 for (vector<Item>::iterator I = List.begin(); I != List.end(); ++I)
296 {
297 if(I->Pkg.end() == true)
298 continue;
299
300 pkgDepCache::StateCache &S = Cache[I->Pkg];
301
302 fprintf(F,"%s ",I->Pkg.Name());
303
304 // Current version which we are going to replace
305 pkgCache::VerIterator CurVer = I->Pkg.CurrentVer();
306 if (CurVer.end() == true && (I->Op == Item::Remove || I->Op == Item::Purge))
307 CurVer = FindNowVersion(I->Pkg);
308
309 if (CurVer.end() == true)
310 {
311 if (Version <= 2)
312 fprintf(F, "- ");
313 else
314 fprintf(F, "- - none ");
315 }
316 else
317 {
318 fprintf(F, "%s ", CurVer.VerStr());
319 if (Version >= 3)
320 fprintf(F, "%s %s ", CurVer.Arch(), CurVer.MultiArchType());
321 }
322
323 // Show the compare operator between current and install version
324 if (S.InstallVer != 0)
325 {
326 pkgCache::VerIterator const InstVer = S.InstVerIter(Cache);
327 int Comp = 2;
328 if (CurVer.end() == false)
329 Comp = InstVer.CompareVer(CurVer);
330 if (Comp < 0)
331 fprintf(F,"> ");
332 else if (Comp == 0)
333 fprintf(F,"= ");
334 else if (Comp > 0)
335 fprintf(F,"< ");
336 fprintf(F, "%s ", InstVer.VerStr());
337 if (Version >= 3)
338 fprintf(F, "%s %s ", InstVer.Arch(), InstVer.MultiArchType());
339 }
340 else
341 {
342 if (Version <= 2)
343 fprintf(F, "> - ");
344 else
345 fprintf(F, "> - - none ");
346 }
347
348 // Show the filename/operation
349 if (I->Op == Item::Install)
350 {
351 // No errors here..
352 if (I->File[0] != '/')
353 fprintf(F,"**ERROR**\n");
354 else
355 fprintf(F,"%s\n",I->File.c_str());
356 }
357 else if (I->Op == Item::Configure)
358 fprintf(F,"**CONFIGURE**\n");
359 else if (I->Op == Item::Remove ||
360 I->Op == Item::Purge)
361 fprintf(F,"**REMOVE**\n");
362
363 if (ferror(F) != 0)
364 return false;
365 }
366 return true;
367 }
368 /*}}}*/
369 // DPkgPM::RunScriptsWithPkgs - Run scripts with package names on stdin /*{{{*/
370 // ---------------------------------------------------------------------
371 /* This looks for a list of scripts to run from the configuration file
372 each one is run and is fed on standard input a list of all .deb files
373 that are due to be installed. */
374 bool pkgDPkgPM::RunScriptsWithPkgs(const char *Cnf)
375 {
376 Configuration::Item const *Opts = _config->Tree(Cnf);
377 if (Opts == 0 || Opts->Child == 0)
378 return true;
379 Opts = Opts->Child;
380
381 unsigned int Count = 1;
382 for (; Opts != 0; Opts = Opts->Next, Count++)
383 {
384 if (Opts->Value.empty() == true)
385 continue;
386
387 // Determine the protocol version
388 string OptSec = Opts->Value;
389 string::size_type Pos;
390 if ((Pos = OptSec.find(' ')) == string::npos || Pos == 0)
391 Pos = OptSec.length();
392 OptSec = "DPkg::Tools::Options::" + string(Opts->Value.c_str(),Pos);
393
394 unsigned int Version = _config->FindI(OptSec+"::Version",1);
395 unsigned int InfoFD = _config->FindI(OptSec + "::InfoFD", STDIN_FILENO);
396
397 // Create the pipes
398 int Pipes[2];
399 if (pipe(Pipes) != 0)
400 return _error->Errno("pipe","Failed to create IPC pipe to subprocess");
401 if (InfoFD != (unsigned)Pipes[0])
402 SetCloseExec(Pipes[0],true);
403 else
404 _config->Set("APT::Keep-Fds::", Pipes[0]);
405 SetCloseExec(Pipes[1],true);
406
407 // Purified Fork for running the script
408 pid_t Process = ExecFork();
409 if (Process == 0)
410 {
411 // Setup the FDs
412 dup2(Pipes[0], InfoFD);
413 SetCloseExec(STDOUT_FILENO,false);
414 SetCloseExec(STDIN_FILENO,false);
415 SetCloseExec(STDERR_FILENO,false);
416
417 string hookfd;
418 strprintf(hookfd, "%d", InfoFD);
419 setenv("APT_HOOK_INFO_FD", hookfd.c_str(), 1);
420
421 dpkgChrootDirectory();
422 const char *Args[4];
423 Args[0] = "/bin/sh";
424 Args[1] = "-c";
425 Args[2] = Opts->Value.c_str();
426 Args[3] = 0;
427 execv(Args[0],(char **)Args);
428 _exit(100);
429 }
430 if (InfoFD == (unsigned)Pipes[0])
431 _config->Clear("APT::Keep-Fds", Pipes[0]);
432 close(Pipes[0]);
433 FILE *F = fdopen(Pipes[1],"w");
434 if (F == 0)
435 return _error->Errno("fdopen","Faild to open new FD");
436
437 // Feed it the filenames.
438 if (Version <= 1)
439 {
440 for (vector<Item>::iterator I = List.begin(); I != List.end(); ++I)
441 {
442 // Only deal with packages to be installed from .deb
443 if (I->Op != Item::Install)
444 continue;
445
446 // No errors here..
447 if (I->File[0] != '/')
448 continue;
449
450 /* Feed the filename of each package that is pending install
451 into the pipe. */
452 fprintf(F,"%s\n",I->File.c_str());
453 if (ferror(F) != 0)
454 break;
455 }
456 }
457 else
458 SendPkgsInfo(F, Version);
459
460 fclose(F);
461
462 // Clean up the sub process
463 if (ExecWait(Process,Opts->Value.c_str()) == false)
464 return _error->Error("Failure running script %s",Opts->Value.c_str());
465 }
466
467 return true;
468 }
469 /*}}}*/
470 // DPkgPM::DoStdin - Read stdin and pass to slave pty /*{{{*/
471 // ---------------------------------------------------------------------
472 /*
473 */
474 void pkgDPkgPM::DoStdin(int master)
475 {
476 unsigned char input_buf[256] = {0,};
477 ssize_t len = read(0, input_buf, sizeof(input_buf));
478 if (len)
479 FileFd::Write(master, input_buf, len);
480 else
481 d->stdin_is_dev_null = true;
482 }
483 /*}}}*/
484 // DPkgPM::DoTerminalPty - Read the terminal pty and write log /*{{{*/
485 // ---------------------------------------------------------------------
486 /*
487 * read the terminal pty and write log
488 */
489 void pkgDPkgPM::DoTerminalPty(int master)
490 {
491 unsigned char term_buf[1024] = {0,0, };
492
493 ssize_t len=read(master, term_buf, sizeof(term_buf));
494 if(len == -1 && errno == EIO)
495 {
496 // this happens when the child is about to exit, we
497 // give it time to actually exit, otherwise we run
498 // into a race so we sleep for half a second.
499 struct timespec sleepfor = { 0, 500000000 };
500 nanosleep(&sleepfor, NULL);
501 return;
502 }
503 if(len <= 0)
504 return;
505 FileFd::Write(1, term_buf, len);
506 if(d->term_out)
507 fwrite(term_buf, len, sizeof(char), d->term_out);
508 }
509 /*}}}*/
510 // DPkgPM::ProcessDpkgStatusBuf /*{{{*/
511 // ---------------------------------------------------------------------
512 /*
513 */
514 void pkgDPkgPM::ProcessDpkgStatusLine(char *line)
515 {
516 bool const Debug = _config->FindB("Debug::pkgDPkgProgressReporting",false);
517
518 if (Debug == true)
519 std::clog << "got from dpkg '" << line << "'" << std::endl;
520
521
522 /* dpkg sends strings like this:
523 'status: <pkg>: <pkg qstate>'
524 'status: <pkg>:<arch>: <pkg qstate>'
525 errors look like this:
526 '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
527 and conffile-prompt like this
528 'status: conffile-prompt: conffile : 'current-conffile' 'new-conffile' useredited distedited
529
530 Newer versions of dpkg sent also:
531 'processing: install: pkg'
532 'processing: configure: pkg'
533 'processing: remove: pkg'
534 'processing: purge: pkg'
535 'processing: disappear: pkg'
536 'processing: trigproc: trigger'
537
538 */
539 // we need to split on ": " (note the appended space) as the ':' is
540 // part of the pkgname:arch information that dpkg sends
541 //
542 // A dpkg error message may contain additional ":" (like
543 // "failed in buffer_write(fd) (10, ret=-1): backend dpkg-deb ..."
544 // so we need to ensure to not split too much
545 std::vector<std::string> list = StringSplit(line, ": ", 3);
546 if(list.size() != 3)
547 {
548 if (Debug == true)
549 std::clog << "ignoring line: not enough ':'" << std::endl;
550 return;
551 }
552 // dpkg does not send always send "pkgname:arch" so we add it here if needed
553 std::string pkgname = list[1];
554 if (pkgname.find(":") == std::string::npos)
555 {
556 string const nativeArch = _config->Find("APT::Architecture");
557 pkgname = pkgname + ":" + nativeArch;
558 }
559 const char* const pkg = pkgname.c_str();
560 const char* action = list[2].c_str();
561
562 // 'processing' from dpkg looks like
563 // 'processing: action: pkg'
564 if(strncmp(list[0].c_str(), "processing", strlen("processing")) == 0)
565 {
566 const char* const pkg_or_trigger = list[2].c_str();
567 action = list[1].c_str();
568 const std::pair<const char *, const char *> * const iter =
569 std::find_if(PackageProcessingOpsBegin,
570 PackageProcessingOpsEnd,
571 MatchProcessingOp(action));
572 if(iter == PackageProcessingOpsEnd)
573 {
574 if (Debug == true)
575 std::clog << "ignoring unknown action: " << action << std::endl;
576 return;
577 }
578 std::string pkg_action;
579 strprintf(pkg_action, _(iter->second), pkg_or_trigger);
580
581 d->progress->StatusChanged(pkg_or_trigger, PackagesDone, PackagesTotal,
582 pkg_action);
583 if (strncmp(action, "disappear", strlen("disappear")) == 0)
584 handleDisappearAction(pkg_or_trigger);
585 return;
586 }
587
588 if(strncmp(action,"error",strlen("error")) == 0)
589 {
590 d->progress->Error(list[1], PackagesDone, PackagesTotal, list[3]);
591 pkgFailures++;
592 WriteApportReport(list[1].c_str(), list[3].c_str());
593 return;
594 }
595 else if(strncmp(action,"conffile",strlen("conffile")) == 0)
596 {
597 d->progress->ConffilePrompt(list[1], PackagesDone, PackagesTotal,
598 list[3]);
599 return;
600 }
601
602 vector<struct DpkgState> const &states = PackageOps[pkg];
603 const char *next_action = NULL;
604 if(PackageOpsDone[pkg] < states.size())
605 next_action = states[PackageOpsDone[pkg]].state;
606 // check if the package moved to the next dpkg state
607 if(next_action && (strcmp(action, next_action) == 0))
608 {
609 // only read the translation if there is actually a next
610 // action
611 std::string translation;
612 strprintf(translation, _(states[PackageOpsDone[pkg]].str), pkg);
613
614 // we moved from one dpkg state to a new one, report that
615 PackageOpsDone[pkg]++;
616 PackagesDone++;
617 // and send to the progress
618 d->progress->StatusChanged(pkg, PackagesDone, PackagesTotal,
619 translation);
620 }
621 if (Debug == true)
622 std::clog << "(parsed from dpkg) pkg: " << pkg
623 << " action: " << action << endl;
624 }
625 /*}}}*/
626 // DPkgPM::handleDisappearAction /*{{{*/
627 void pkgDPkgPM::handleDisappearAction(string const &pkgname)
628 {
629 // record the package name for display and stuff later
630 disappearedPkgs.insert(pkgname);
631
632 pkgCache::PkgIterator Pkg = Cache.FindPkg(pkgname);
633 if (unlikely(Pkg.end() == true))
634 return;
635 // the disappeared package was auto-installed - nothing to do
636 if ((Cache[Pkg].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto)
637 return;
638 pkgCache::VerIterator PkgVer = Cache[Pkg].InstVerIter(Cache);
639 if (unlikely(PkgVer.end() == true))
640 return;
641 /* search in the list of dependencies for (Pre)Depends,
642 check if this dependency has a Replaces on our package
643 and if so transfer the manual installed flag to it */
644 for (pkgCache::DepIterator Dep = PkgVer.DependsList(); Dep.end() != true; ++Dep)
645 {
646 if (Dep->Type != pkgCache::Dep::Depends &&
647 Dep->Type != pkgCache::Dep::PreDepends)
648 continue;
649 pkgCache::PkgIterator Tar = Dep.TargetPkg();
650 if (unlikely(Tar.end() == true))
651 continue;
652 // the package is already marked as manual
653 if ((Cache[Tar].Flags & pkgCache::Flag::Auto) != pkgCache::Flag::Auto)
654 continue;
655 pkgCache::VerIterator TarVer = Cache[Tar].InstVerIter(Cache);
656 if (TarVer.end() == true)
657 continue;
658 for (pkgCache::DepIterator Rep = TarVer.DependsList(); Rep.end() != true; ++Rep)
659 {
660 if (Rep->Type != pkgCache::Dep::Replaces)
661 continue;
662 if (Pkg != Rep.TargetPkg())
663 continue;
664 // okay, they are strongly connected - transfer manual-bit
665 if (Debug == true)
666 std::clog << "transfer manual-bit from disappeared »" << pkgname << "« to »" << Tar.FullName() << "«" << std::endl;
667 Cache[Tar].Flags &= ~Flag::Auto;
668 break;
669 }
670 }
671 }
672 /*}}}*/
673 // DPkgPM::DoDpkgStatusFd /*{{{*/
674 // ---------------------------------------------------------------------
675 /*
676 */
677 void pkgDPkgPM::DoDpkgStatusFd(int statusfd)
678 {
679 char *p, *q;
680 int len;
681
682 len=read(statusfd, &d->dpkgbuf[d->dpkgbuf_pos], sizeof(d->dpkgbuf)-d->dpkgbuf_pos);
683 d->dpkgbuf_pos += len;
684 if(len <= 0)
685 return;
686
687 // process line by line if we have a buffer
688 p = q = d->dpkgbuf;
689 while((q=(char*)memchr(p, '\n', d->dpkgbuf+d->dpkgbuf_pos-p)) != NULL)
690 {
691 *q = 0;
692 ProcessDpkgStatusLine(p);
693 p=q+1; // continue with next line
694 }
695
696 // now move the unprocessed bits (after the final \n that is now a 0x0)
697 // to the start and update d->dpkgbuf_pos
698 p = (char*)memrchr(d->dpkgbuf, 0, d->dpkgbuf_pos);
699 if(p == NULL)
700 return;
701
702 // we are interessted in the first char *after* 0x0
703 p++;
704
705 // move the unprocessed tail to the start and update pos
706 memmove(d->dpkgbuf, p, p-d->dpkgbuf);
707 d->dpkgbuf_pos = d->dpkgbuf+d->dpkgbuf_pos-p;
708 }
709 /*}}}*/
710 // DPkgPM::WriteHistoryTag /*{{{*/
711 void pkgDPkgPM::WriteHistoryTag(string const &tag, string value)
712 {
713 size_t const length = value.length();
714 if (length == 0)
715 return;
716 // poor mans rstrip(", ")
717 if (value[length-2] == ',' && value[length-1] == ' ')
718 value.erase(length - 2, 2);
719 fprintf(d->history_out, "%s: %s\n", tag.c_str(), value.c_str());
720 } /*}}}*/
721 // DPkgPM::OpenLog /*{{{*/
722 bool pkgDPkgPM::OpenLog()
723 {
724 string const logdir = _config->FindDir("Dir::Log");
725 if(CreateAPTDirectoryIfNeeded(logdir, logdir) == false)
726 // FIXME: use a better string after freeze
727 return _error->Error(_("Directory '%s' missing"), logdir.c_str());
728
729 // get current time
730 char timestr[200];
731 time_t const t = time(NULL);
732 struct tm const * const tmp = localtime(&t);
733 strftime(timestr, sizeof(timestr), "%F %T", tmp);
734
735 // open terminal log
736 string const logfile_name = flCombine(logdir,
737 _config->Find("Dir::Log::Terminal"));
738 if (!logfile_name.empty())
739 {
740 d->term_out = fopen(logfile_name.c_str(),"a");
741 if (d->term_out == NULL)
742 return _error->WarningE("OpenLog", _("Could not open file '%s'"), logfile_name.c_str());
743 setvbuf(d->term_out, NULL, _IONBF, 0);
744 SetCloseExec(fileno(d->term_out), true);
745 if (getuid() == 0) // if we aren't root, we can't chown a file, so don't try it
746 {
747 struct passwd *pw = getpwnam("root");
748 struct group *gr = getgrnam("adm");
749 if (pw != NULL && gr != NULL && chown(logfile_name.c_str(), pw->pw_uid, gr->gr_gid) != 0)
750 _error->WarningE("OpenLog", "chown to root:adm of file %s failed", logfile_name.c_str());
751 }
752 if (chmod(logfile_name.c_str(), 0640) != 0)
753 _error->WarningE("OpenLog", "chmod 0640 of file %s failed", logfile_name.c_str());
754 fprintf(d->term_out, "\nLog started: %s\n", timestr);
755 }
756
757 // write your history
758 string const history_name = flCombine(logdir,
759 _config->Find("Dir::Log::History"));
760 if (!history_name.empty())
761 {
762 d->history_out = fopen(history_name.c_str(),"a");
763 if (d->history_out == NULL)
764 return _error->WarningE("OpenLog", _("Could not open file '%s'"), history_name.c_str());
765 SetCloseExec(fileno(d->history_out), true);
766 chmod(history_name.c_str(), 0644);
767 fprintf(d->history_out, "\nStart-Date: %s\n", timestr);
768 string remove, purge, install, reinstall, upgrade, downgrade;
769 for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
770 {
771 enum { CANDIDATE, CANDIDATE_AUTO, CURRENT_CANDIDATE, CURRENT } infostring;
772 string *line = NULL;
773 #define HISTORYINFO(X, Y) { line = &X; infostring = Y; }
774 if (Cache[I].NewInstall() == true)
775 HISTORYINFO(install, CANDIDATE_AUTO)
776 else if (Cache[I].ReInstall() == true)
777 HISTORYINFO(reinstall, CANDIDATE)
778 else if (Cache[I].Upgrade() == true)
779 HISTORYINFO(upgrade, CURRENT_CANDIDATE)
780 else if (Cache[I].Downgrade() == true)
781 HISTORYINFO(downgrade, CURRENT_CANDIDATE)
782 else if (Cache[I].Delete() == true)
783 HISTORYINFO((Cache[I].Purge() ? purge : remove), CURRENT)
784 else
785 continue;
786 #undef HISTORYINFO
787 line->append(I.FullName(false)).append(" (");
788 switch (infostring) {
789 case CANDIDATE: line->append(Cache[I].CandVersion); break;
790 case CANDIDATE_AUTO:
791 line->append(Cache[I].CandVersion);
792 if ((Cache[I].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto)
793 line->append(", automatic");
794 break;
795 case CURRENT_CANDIDATE: line->append(Cache[I].CurVersion).append(", ").append(Cache[I].CandVersion); break;
796 case CURRENT: line->append(Cache[I].CurVersion); break;
797 }
798 line->append("), ");
799 }
800 if (_config->Exists("Commandline::AsString") == true)
801 WriteHistoryTag("Commandline", _config->Find("Commandline::AsString"));
802 WriteHistoryTag("Install", install);
803 WriteHistoryTag("Reinstall", reinstall);
804 WriteHistoryTag("Upgrade", upgrade);
805 WriteHistoryTag("Downgrade",downgrade);
806 WriteHistoryTag("Remove",remove);
807 WriteHistoryTag("Purge",purge);
808 fflush(d->history_out);
809 }
810
811 return true;
812 }
813 /*}}}*/
814 // DPkg::CloseLog /*{{{*/
815 bool pkgDPkgPM::CloseLog()
816 {
817 char timestr[200];
818 time_t t = time(NULL);
819 struct tm *tmp = localtime(&t);
820 strftime(timestr, sizeof(timestr), "%F %T", tmp);
821
822 if(d->term_out)
823 {
824 fprintf(d->term_out, "Log ended: ");
825 fprintf(d->term_out, "%s", timestr);
826 fprintf(d->term_out, "\n");
827 fclose(d->term_out);
828 }
829 d->term_out = NULL;
830
831 if(d->history_out)
832 {
833 if (disappearedPkgs.empty() == false)
834 {
835 string disappear;
836 for (std::set<std::string>::const_iterator d = disappearedPkgs.begin();
837 d != disappearedPkgs.end(); ++d)
838 {
839 pkgCache::PkgIterator P = Cache.FindPkg(*d);
840 disappear.append(*d);
841 if (P.end() == true)
842 disappear.append(", ");
843 else
844 disappear.append(" (").append(Cache[P].CurVersion).append("), ");
845 }
846 WriteHistoryTag("Disappeared", disappear);
847 }
848 if (d->dpkg_error.empty() == false)
849 fprintf(d->history_out, "Error: %s\n", d->dpkg_error.c_str());
850 fprintf(d->history_out, "End-Date: %s\n", timestr);
851 fclose(d->history_out);
852 }
853 d->history_out = NULL;
854
855 return true;
856 }
857 /*}}}*/
858 // This implements a racy version of pselect for those architectures
859 // that don't have a working implementation.
860 // FIXME: Probably can be removed on Lenny+1
861 static int racy_pselect(int nfds, fd_set *readfds, fd_set *writefds,
862 fd_set *exceptfds, const struct timespec *timeout,
863 const sigset_t *sigmask)
864 {
865 sigset_t origmask;
866 struct timeval tv;
867 int retval;
868
869 tv.tv_sec = timeout->tv_sec;
870 tv.tv_usec = timeout->tv_nsec/1000;
871
872 sigprocmask(SIG_SETMASK, sigmask, &origmask);
873 retval = select(nfds, readfds, writefds, exceptfds, &tv);
874 sigprocmask(SIG_SETMASK, &origmask, 0);
875 return retval;
876 }
877 /*}}}*/
878
879
880 // DPkgPM::Go - Run the sequence /*{{{*/
881 // ---------------------------------------------------------------------
882 /* This globs the operations and calls dpkg
883 *
884 * If it is called with a progress object apt will report the install
885 * progress to this object. It maps the dpkg states a package goes
886 * through to human readable (and i10n-able)
887 * names and calculates a percentage for each step.
888 */
889 bool pkgDPkgPM::Go(APT::Progress::PackageManager *progress)
890 {
891 pkgPackageManager::SigINTStop = false;
892 d->progress = progress;
893
894 // Generate the base argument list for dpkg
895 std::vector<const char *> Args;
896 unsigned long StartSize = 0;
897 string Tmp = _config->Find("Dir::Bin::dpkg","dpkg");
898 {
899 string const dpkgChrootDir = _config->FindDir("DPkg::Chroot-Directory", "/");
900 size_t dpkgChrootLen = dpkgChrootDir.length();
901 if (dpkgChrootDir != "/" && Tmp.find(dpkgChrootDir) == 0)
902 {
903 if (dpkgChrootDir[dpkgChrootLen - 1] == '/')
904 --dpkgChrootLen;
905 Tmp = Tmp.substr(dpkgChrootLen);
906 }
907 }
908 Args.push_back(Tmp.c_str());
909 StartSize += Tmp.length();
910
911 // Stick in any custom dpkg options
912 Configuration::Item const *Opts = _config->Tree("DPkg::Options");
913 if (Opts != 0)
914 {
915 Opts = Opts->Child;
916 for (; Opts != 0; Opts = Opts->Next)
917 {
918 if (Opts->Value.empty() == true)
919 continue;
920 Args.push_back(Opts->Value.c_str());
921 StartSize += Opts->Value.length();
922 }
923 }
924
925 size_t const BaseArgs = Args.size();
926 // we need to detect if we can qualify packages with the architecture or not
927 Args.push_back("--assert-multi-arch");
928 Args.push_back(NULL);
929
930 pid_t dpkgAssertMultiArch = ExecFork();
931 if (dpkgAssertMultiArch == 0)
932 {
933 dpkgChrootDirectory();
934 // redirect everything to the ultimate sink as we only need the exit-status
935 int const nullfd = open("/dev/null", O_RDONLY);
936 dup2(nullfd, STDIN_FILENO);
937 dup2(nullfd, STDOUT_FILENO);
938 dup2(nullfd, STDERR_FILENO);
939 execvp(Args[0], (char**) &Args[0]);
940 _error->WarningE("dpkgGo", "Can't detect if dpkg supports multi-arch!");
941 _exit(2);
942 }
943
944 fd_set rfds;
945 struct timespec tv;
946 sigset_t sigmask;
947 sigset_t original_sigmask;
948
949 unsigned int const MaxArgs = _config->FindI("Dpkg::MaxArgs",8*1024);
950 unsigned int const MaxArgBytes = _config->FindI("Dpkg::MaxArgBytes",32*1024);
951 bool const NoTriggers = _config->FindB("DPkg::NoTriggers", false);
952
953 if (RunScripts("DPkg::Pre-Invoke") == false)
954 return false;
955
956 if (RunScriptsWithPkgs("DPkg::Pre-Install-Pkgs") == false)
957 return false;
958
959 // support subpressing of triggers processing for special
960 // cases like d-i that runs the triggers handling manually
961 bool const SmartConf = (_config->Find("PackageManager::Configure", "all") != "all");
962 bool const TriggersPending = _config->FindB("DPkg::TriggersPending", false);
963 if (_config->FindB("DPkg::ConfigurePending", SmartConf) == true)
964 List.push_back(Item(Item::ConfigurePending, PkgIterator()));
965
966 // map the dpkg states to the operations that are performed
967 // (this is sorted in the same way as Item::Ops)
968 static const struct DpkgState DpkgStatesOpMap[][7] = {
969 // Install operation
970 {
971 {"half-installed", N_("Preparing %s")},
972 {"unpacked", N_("Unpacking %s") },
973 {NULL, NULL}
974 },
975 // Configure operation
976 {
977 {"unpacked",N_("Preparing to configure %s") },
978 {"half-configured", N_("Configuring %s") },
979 { "installed", N_("Installed %s")},
980 {NULL, NULL}
981 },
982 // Remove operation
983 {
984 {"half-configured", N_("Preparing for removal of %s")},
985 {"half-installed", N_("Removing %s")},
986 {"config-files", N_("Removed %s")},
987 {NULL, NULL}
988 },
989 // Purge operation
990 {
991 {"config-files", N_("Preparing to completely remove %s")},
992 {"not-installed", N_("Completely removed %s")},
993 {NULL, NULL}
994 },
995 };
996
997 // init the PackageOps map, go over the list of packages that
998 // that will be [installed|configured|removed|purged] and add
999 // them to the PackageOps map (the dpkg states it goes through)
1000 // and the PackageOpsTranslations (human readable strings)
1001 for (vector<Item>::const_iterator I = List.begin(); I != List.end(); ++I)
1002 {
1003 if((*I).Pkg.end() == true)
1004 continue;
1005
1006 string const name = (*I).Pkg.FullName();
1007 PackageOpsDone[name] = 0;
1008 for(int i=0; (DpkgStatesOpMap[(*I).Op][i]).state != NULL; ++i)
1009 {
1010 PackageOps[name].push_back(DpkgStatesOpMap[(*I).Op][i]);
1011 PackagesTotal++;
1012 }
1013 }
1014
1015 d->stdin_is_dev_null = false;
1016
1017 // create log
1018 OpenLog();
1019
1020 bool dpkgMultiArch = false;
1021 if (dpkgAssertMultiArch > 0)
1022 {
1023 int Status = 0;
1024 while (waitpid(dpkgAssertMultiArch, &Status, 0) != dpkgAssertMultiArch)
1025 {
1026 if (errno == EINTR)
1027 continue;
1028 _error->WarningE("dpkgGo", _("Waited for %s but it wasn't there"), "dpkg --assert-multi-arch");
1029 break;
1030 }
1031 if (WIFEXITED(Status) == true && WEXITSTATUS(Status) == 0)
1032 dpkgMultiArch = true;
1033 }
1034
1035 // this loop is runs once per operation
1036 for (vector<Item>::const_iterator I = List.begin(); I != List.end();)
1037 {
1038 // Do all actions with the same Op in one run
1039 vector<Item>::const_iterator J = I;
1040 if (TriggersPending == true)
1041 for (; J != List.end(); ++J)
1042 {
1043 if (J->Op == I->Op)
1044 continue;
1045 if (J->Op != Item::TriggersPending)
1046 break;
1047 vector<Item>::const_iterator T = J + 1;
1048 if (T != List.end() && T->Op == I->Op)
1049 continue;
1050 break;
1051 }
1052 else
1053 for (; J != List.end() && J->Op == I->Op; ++J)
1054 /* nothing */;
1055
1056 // keep track of allocated strings for multiarch package names
1057 std::vector<char *> Packages;
1058
1059 // start with the baseset of arguments
1060 unsigned long Size = StartSize;
1061 Args.erase(Args.begin() + BaseArgs, Args.end());
1062
1063 // Now check if we are within the MaxArgs limit
1064 //
1065 // this code below is problematic, because it may happen that
1066 // the argument list is split in a way that A depends on B
1067 // and they are in the same "--configure A B" run
1068 // - with the split they may now be configured in different
1069 // runs, using Immediate-Configure-All can help prevent this.
1070 if (J - I > (signed)MaxArgs)
1071 {
1072 J = I + MaxArgs;
1073 unsigned long const size = MaxArgs + 10;
1074 Args.reserve(size);
1075 Packages.reserve(size);
1076 }
1077 else
1078 {
1079 unsigned long const size = (J - I) + 10;
1080 Args.reserve(size);
1081 Packages.reserve(size);
1082 }
1083
1084 int fd[2];
1085 if (pipe(fd) != 0)
1086 return _error->Errno("pipe","Failed to create IPC pipe to dpkg");
1087
1088 #define ADDARG(X) Args.push_back(X); Size += strlen(X)
1089 #define ADDARGC(X) Args.push_back(X); Size += sizeof(X) - 1
1090
1091 ADDARGC("--status-fd");
1092 char status_fd_buf[20];
1093 snprintf(status_fd_buf,sizeof(status_fd_buf),"%i", fd[1]);
1094 ADDARG(status_fd_buf);
1095 unsigned long const Op = I->Op;
1096
1097 switch (I->Op)
1098 {
1099 case Item::Remove:
1100 ADDARGC("--force-depends");
1101 ADDARGC("--force-remove-essential");
1102 ADDARGC("--remove");
1103 break;
1104
1105 case Item::Purge:
1106 ADDARGC("--force-depends");
1107 ADDARGC("--force-remove-essential");
1108 ADDARGC("--purge");
1109 break;
1110
1111 case Item::Configure:
1112 ADDARGC("--configure");
1113 break;
1114
1115 case Item::ConfigurePending:
1116 ADDARGC("--configure");
1117 ADDARGC("--pending");
1118 break;
1119
1120 case Item::TriggersPending:
1121 ADDARGC("--triggers-only");
1122 ADDARGC("--pending");
1123 break;
1124
1125 case Item::Install:
1126 ADDARGC("--unpack");
1127 ADDARGC("--auto-deconfigure");
1128 break;
1129 }
1130
1131 if (NoTriggers == true && I->Op != Item::TriggersPending &&
1132 I->Op != Item::ConfigurePending)
1133 {
1134 ADDARGC("--no-triggers");
1135 }
1136 #undef ADDARGC
1137
1138 // Write in the file or package names
1139 if (I->Op == Item::Install)
1140 {
1141 for (;I != J && Size < MaxArgBytes; ++I)
1142 {
1143 if (I->File[0] != '/')
1144 return _error->Error("Internal Error, Pathname to install is not absolute '%s'",I->File.c_str());
1145 Args.push_back(I->File.c_str());
1146 Size += I->File.length();
1147 }
1148 }
1149 else
1150 {
1151 string const nativeArch = _config->Find("APT::Architecture");
1152 unsigned long const oldSize = I->Op == Item::Configure ? Size : 0;
1153 for (;I != J && Size < MaxArgBytes; ++I)
1154 {
1155 if((*I).Pkg.end() == true)
1156 continue;
1157 if (I->Op == Item::Configure && disappearedPkgs.find(I->Pkg.Name()) != disappearedPkgs.end())
1158 continue;
1159 // We keep this here to allow "smooth" transitions from e.g. multiarch dpkg/ubuntu to dpkg/debian
1160 if (dpkgMultiArch == false && (I->Pkg.Arch() == nativeArch ||
1161 strcmp(I->Pkg.Arch(), "all") == 0 ||
1162 strcmp(I->Pkg.Arch(), "none") == 0))
1163 {
1164 char const * const name = I->Pkg.Name();
1165 ADDARG(name);
1166 }
1167 else
1168 {
1169 pkgCache::VerIterator PkgVer;
1170 std::string name = I->Pkg.Name();
1171 if (Op == Item::Remove || Op == Item::Purge)
1172 {
1173 PkgVer = I->Pkg.CurrentVer();
1174 if(PkgVer.end() == true)
1175 PkgVer = FindNowVersion(I->Pkg);
1176 }
1177 else
1178 PkgVer = Cache[I->Pkg].InstVerIter(Cache);
1179 if (strcmp(I->Pkg.Arch(), "none") == 0)
1180 ; // never arch-qualify a package without an arch
1181 else if (PkgVer.end() == false)
1182 name.append(":").append(PkgVer.Arch());
1183 else
1184 _error->Warning("Can not find PkgVer for '%s'", name.c_str());
1185 char * const fullname = strdup(name.c_str());
1186 Packages.push_back(fullname);
1187 ADDARG(fullname);
1188 }
1189 }
1190 // skip configure action if all sheduled packages disappeared
1191 if (oldSize == Size)
1192 continue;
1193 }
1194 #undef ADDARG
1195
1196 J = I;
1197
1198 if (_config->FindB("Debug::pkgDPkgPM",false) == true)
1199 {
1200 for (std::vector<const char *>::const_iterator a = Args.begin();
1201 a != Args.end(); ++a)
1202 clog << *a << ' ';
1203 clog << endl;
1204 continue;
1205 }
1206 Args.push_back(NULL);
1207
1208 cout << flush;
1209 clog << flush;
1210 cerr << flush;
1211
1212 /* Mask off sig int/quit. We do this because dpkg also does when
1213 it forks scripts. What happens is that when you hit ctrl-c it sends
1214 it to all processes in the group. Since dpkg ignores the signal
1215 it doesn't die but we do! So we must also ignore it */
1216 sighandler_t old_SIGQUIT = signal(SIGQUIT,SIG_IGN);
1217 sighandler_t old_SIGINT = signal(SIGINT,SigINT);
1218
1219 // Check here for any SIGINT
1220 if (pkgPackageManager::SigINTStop && (Op == Item::Remove || Op == Item::Purge || Op == Item::Install))
1221 break;
1222
1223
1224 // ignore SIGHUP as well (debian #463030)
1225 sighandler_t old_SIGHUP = signal(SIGHUP,SIG_IGN);
1226
1227 struct termios tt;
1228 struct winsize win;
1229 int master = -1;
1230 int slave = -1;
1231
1232 // if tcgetattr does not return zero there was a error
1233 // and we do not do any pty magic
1234 _error->PushToStack();
1235 if (tcgetattr(STDOUT_FILENO, &tt) == 0)
1236 {
1237 ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&win);
1238 if (openpty(&master, &slave, NULL, &tt, &win) < 0)
1239 {
1240 _error->Errno("openpty", _("Can not write log (%s)"), _("Is /dev/pts mounted?"));
1241 master = slave = -1;
1242 } else {
1243 struct termios rtt;
1244 rtt = tt;
1245 cfmakeraw(&rtt);
1246 rtt.c_lflag &= ~ECHO;
1247 rtt.c_lflag |= ISIG;
1248 // block SIGTTOU during tcsetattr to prevent a hang if
1249 // the process is a member of the background process group
1250 // http://www.opengroup.org/onlinepubs/000095399/functions/tcsetattr.html
1251 sigemptyset(&sigmask);
1252 sigaddset(&sigmask, SIGTTOU);
1253 sigprocmask(SIG_BLOCK,&sigmask, &original_sigmask);
1254 tcsetattr(0, TCSAFLUSH, &rtt);
1255 sigprocmask(SIG_SETMASK, &original_sigmask, 0);
1256 }
1257 }
1258 // complain only if stdout is either a terminal (but still failed) or is an invalid
1259 // descriptor otherwise we would complain about redirection to e.g. /dev/null as well.
1260 else if (isatty(STDOUT_FILENO) == 1 || errno == EBADF)
1261 _error->Errno("tcgetattr", _("Can not write log (%s)"), _("Is stdout a terminal?"));
1262
1263 if (_error->PendingError() == true)
1264 _error->DumpErrors(std::cerr);
1265 _error->RevertToStack();
1266
1267 // Fork dpkg
1268 pid_t Child;
1269 d->progress->Started();
1270
1271 Child = ExecFork();
1272 // This is the child
1273 if (Child == 0)
1274 {
1275
1276 if(slave >= 0 && master >= 0)
1277 {
1278 setsid();
1279 ioctl(slave, TIOCSCTTY, 0);
1280 close(master);
1281 dup2(slave, 0);
1282 dup2(slave, 1);
1283 dup2(slave, 2);
1284 close(slave);
1285 }
1286 close(fd[0]); // close the read end of the pipe
1287
1288 dpkgChrootDirectory();
1289
1290 if (chdir(_config->FindDir("DPkg::Run-Directory","/").c_str()) != 0)
1291 _exit(100);
1292
1293 if (_config->FindB("DPkg::FlushSTDIN",true) == true && isatty(STDIN_FILENO))
1294 {
1295 int Flags,dummy;
1296 if ((Flags = fcntl(STDIN_FILENO,F_GETFL,dummy)) < 0)
1297 _exit(100);
1298
1299 // Discard everything in stdin before forking dpkg
1300 if (fcntl(STDIN_FILENO,F_SETFL,Flags | O_NONBLOCK) < 0)
1301 _exit(100);
1302
1303 while (read(STDIN_FILENO,&dummy,1) == 1);
1304
1305 if (fcntl(STDIN_FILENO,F_SETFL,Flags & (~(long)O_NONBLOCK)) < 0)
1306 _exit(100);
1307 }
1308
1309 /* No Job Control Stop Env is a magic dpkg var that prevents it
1310 from using sigstop */
1311 putenv((char *)"DPKG_NO_TSTP=yes");
1312 execvp(Args[0], (char**) &Args[0]);
1313 cerr << "Could not exec dpkg!" << endl;
1314 _exit(100);
1315 }
1316
1317 // apply ionice
1318 if (_config->FindB("DPkg::UseIoNice", false) == true)
1319 ionice(Child);
1320
1321 // Wait for dpkg
1322 int Status = 0;
1323
1324 // we read from dpkg here
1325 int const _dpkgin = fd[0];
1326 close(fd[1]); // close the write end of the pipe
1327
1328 if(slave > 0)
1329 close(slave);
1330
1331 // setups fds
1332 sigemptyset(&sigmask);
1333 sigprocmask(SIG_BLOCK,&sigmask,&original_sigmask);
1334
1335 /* free vectors (and therefore memory) as we don't need the included data anymore */
1336 for (std::vector<char *>::const_iterator p = Packages.begin();
1337 p != Packages.end(); ++p)
1338 free(*p);
1339 Packages.clear();
1340
1341 // the result of the waitpid call
1342 int res;
1343 int select_ret;
1344 while ((res=waitpid(Child,&Status, WNOHANG)) != Child) {
1345 if(res < 0) {
1346 // FIXME: move this to a function or something, looks ugly here
1347 // error handling, waitpid returned -1
1348 if (errno == EINTR)
1349 continue;
1350 RunScripts("DPkg::Post-Invoke");
1351
1352 // Restore sig int/quit
1353 signal(SIGQUIT,old_SIGQUIT);
1354 signal(SIGINT,old_SIGINT);
1355
1356 signal(SIGHUP,old_SIGHUP);
1357 return _error->Errno("waitpid","Couldn't wait for subprocess");
1358 }
1359
1360 // wait for input or output here
1361 FD_ZERO(&rfds);
1362 if (master >= 0 && !d->stdin_is_dev_null)
1363 FD_SET(0, &rfds);
1364 FD_SET(_dpkgin, &rfds);
1365 if(master >= 0)
1366 FD_SET(master, &rfds);
1367 tv.tv_sec = 1;
1368 tv.tv_nsec = 0;
1369 select_ret = pselect(max(master, _dpkgin)+1, &rfds, NULL, NULL,
1370 &tv, &original_sigmask);
1371 if (select_ret < 0 && (errno == EINVAL || errno == ENOSYS))
1372 select_ret = racy_pselect(max(master, _dpkgin)+1, &rfds, NULL,
1373 NULL, &tv, &original_sigmask);
1374 if (select_ret == 0)
1375 continue;
1376 else if (select_ret < 0 && errno == EINTR)
1377 continue;
1378 else if (select_ret < 0)
1379 {
1380 perror("select() returned error");
1381 continue;
1382 }
1383
1384 if(master >= 0 && FD_ISSET(master, &rfds))
1385 DoTerminalPty(master);
1386 if(master >= 0 && FD_ISSET(0, &rfds))
1387 DoStdin(master);
1388 if(FD_ISSET(_dpkgin, &rfds))
1389 DoDpkgStatusFd(_dpkgin);
1390 }
1391 close(_dpkgin);
1392
1393 // Restore sig int/quit
1394 signal(SIGQUIT,old_SIGQUIT);
1395 signal(SIGINT,old_SIGINT);
1396
1397 signal(SIGHUP,old_SIGHUP);
1398
1399 // tell the progress
1400 d->progress->Finished();
1401
1402 if(master >= 0)
1403 {
1404 tcsetattr(0, TCSAFLUSH, &tt);
1405 close(master);
1406 }
1407
1408 // Check for an error code.
1409 if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
1410 {
1411 // if it was set to "keep-dpkg-runing" then we won't return
1412 // here but keep the loop going and just report it as a error
1413 // for later
1414 bool const stopOnError = _config->FindB("Dpkg::StopOnError",true);
1415
1416 if(stopOnError)
1417 RunScripts("DPkg::Post-Invoke");
1418
1419 if (WIFSIGNALED(Status) != 0 && WTERMSIG(Status) == SIGSEGV)
1420 strprintf(d->dpkg_error, "Sub-process %s received a segmentation fault.",Args[0]);
1421 else if (WIFEXITED(Status) != 0)
1422 strprintf(d->dpkg_error, "Sub-process %s returned an error code (%u)",Args[0],WEXITSTATUS(Status));
1423 else
1424 strprintf(d->dpkg_error, "Sub-process %s exited unexpectedly",Args[0]);
1425
1426 if(d->dpkg_error.size() > 0)
1427 _error->Error("%s", d->dpkg_error.c_str());
1428
1429 if(stopOnError)
1430 {
1431 CloseLog();
1432 return false;
1433 }
1434 }
1435 }
1436 CloseLog();
1437
1438 // dpkg is done at this point
1439 d->progress->StatusChanged("", PackagesDone, PackagesTotal, "");
1440
1441 if (pkgPackageManager::SigINTStop)
1442 _error->Warning(_("Operation was interrupted before it could finish"));
1443
1444 if (RunScripts("DPkg::Post-Invoke") == false)
1445 return false;
1446
1447 if (_config->FindB("Debug::pkgDPkgPM",false) == false)
1448 {
1449 std::string const oldpkgcache = _config->FindFile("Dir::cache::pkgcache");
1450 if (oldpkgcache.empty() == false && RealFileExists(oldpkgcache) == true &&
1451 unlink(oldpkgcache.c_str()) == 0)
1452 {
1453 std::string const srcpkgcache = _config->FindFile("Dir::cache::srcpkgcache");
1454 if (srcpkgcache.empty() == false && RealFileExists(srcpkgcache) == true)
1455 {
1456 _error->PushToStack();
1457 pkgCacheFile CacheFile;
1458 CacheFile.BuildCaches(NULL, true);
1459 _error->RevertToStack();
1460 }
1461 }
1462 }
1463
1464 Cache.writeStateFile(NULL);
1465 return true;
1466 }
1467
1468 void SigINT(int sig) {
1469 pkgPackageManager::SigINTStop = true;
1470 }
1471 /*}}}*/
1472 // pkgDpkgPM::Reset - Dump the contents of the command list /*{{{*/
1473 // ---------------------------------------------------------------------
1474 /* */
1475 void pkgDPkgPM::Reset()
1476 {
1477 List.erase(List.begin(),List.end());
1478 }
1479 /*}}}*/
1480 // pkgDpkgPM::WriteApportReport - write out error report pkg failure /*{{{*/
1481 // ---------------------------------------------------------------------
1482 /* */
1483 void pkgDPkgPM::WriteApportReport(const char *pkgpath, const char *errormsg)
1484 {
1485 // If apport doesn't exist or isn't installed do nothing
1486 // This e.g. prevents messages in 'universes' without apport
1487 pkgCache::PkgIterator apportPkg = Cache.FindPkg("apport");
1488 if (apportPkg.end() == true || apportPkg->CurrentVer == 0)
1489 return;
1490
1491 string pkgname, reportfile, srcpkgname, pkgver, arch;
1492 string::size_type pos;
1493 FILE *report;
1494
1495 if (_config->FindB("Dpkg::ApportFailureReport", false) == false)
1496 {
1497 std::clog << "configured to not write apport reports" << std::endl;
1498 return;
1499 }
1500
1501 // only report the first errors
1502 if(pkgFailures > _config->FindI("APT::Apport::MaxReports", 3))
1503 {
1504 std::clog << _("No apport report written because MaxReports is reached already") << std::endl;
1505 return;
1506 }
1507
1508 // check if its not a follow up error
1509 const char *needle = dgettext("dpkg", "dependency problems - leaving unconfigured");
1510 if(strstr(errormsg, needle) != NULL) {
1511 std::clog << _("No apport report written because the error message indicates its a followup error from a previous failure.") << std::endl;
1512 return;
1513 }
1514
1515 // do not report disk-full failures
1516 if(strstr(errormsg, strerror(ENOSPC)) != NULL) {
1517 std::clog << _("No apport report written because the error message indicates a disk full error") << std::endl;
1518 return;
1519 }
1520
1521 // do not report out-of-memory failures
1522 if(strstr(errormsg, strerror(ENOMEM)) != NULL) {
1523 std::clog << _("No apport report written because the error message indicates a out of memory error") << std::endl;
1524 return;
1525 }
1526
1527 // do not report dpkg I/O errors
1528 // XXX - this message is localized, but this only matches the English version. This is better than nothing.
1529 if(strstr(errormsg, "short read in buffer_copy (")) {
1530 std::clog << _("No apport report written because the error message indicates a dpkg I/O error") << std::endl;
1531 return;
1532 }
1533
1534 // get the pkgname and reportfile
1535 pkgname = flNotDir(pkgpath);
1536 pos = pkgname.find('_');
1537 if(pos != string::npos)
1538 pkgname = pkgname.substr(0, pos);
1539
1540 // find the package versin and source package name
1541 pkgCache::PkgIterator Pkg = Cache.FindPkg(pkgname);
1542 if (Pkg.end() == true)
1543 return;
1544 pkgCache::VerIterator Ver = Cache.GetCandidateVer(Pkg);
1545 if (Ver.end() == true)
1546 return;
1547 pkgver = Ver.VerStr() == NULL ? "unknown" : Ver.VerStr();
1548 pkgRecords Recs(Cache);
1549 pkgRecords::Parser &Parse = Recs.Lookup(Ver.FileList());
1550 srcpkgname = Parse.SourcePkg();
1551 if(srcpkgname.empty())
1552 srcpkgname = pkgname;
1553
1554 // if the file exists already, we check:
1555 // - if it was reported already (touched by apport).
1556 // If not, we do nothing, otherwise
1557 // we overwrite it. This is the same behaviour as apport
1558 // - if we have a report with the same pkgversion already
1559 // then we skip it
1560 reportfile = flCombine("/var/crash",pkgname+".0.crash");
1561 if(FileExists(reportfile))
1562 {
1563 struct stat buf;
1564 char strbuf[255];
1565
1566 // check atime/mtime
1567 stat(reportfile.c_str(), &buf);
1568 if(buf.st_mtime > buf.st_atime)
1569 return;
1570
1571 // check if the existing report is the same version
1572 report = fopen(reportfile.c_str(),"r");
1573 while(fgets(strbuf, sizeof(strbuf), report) != NULL)
1574 {
1575 if(strstr(strbuf,"Package:") == strbuf)
1576 {
1577 char pkgname[255], version[255];
1578 if(sscanf(strbuf, "Package: %254s %254s", pkgname, version) == 2)
1579 if(strcmp(pkgver.c_str(), version) == 0)
1580 {
1581 fclose(report);
1582 return;
1583 }
1584 }
1585 }
1586 fclose(report);
1587 }
1588
1589 // now write the report
1590 arch = _config->Find("APT::Architecture");
1591 report = fopen(reportfile.c_str(),"w");
1592 if(report == NULL)
1593 return;
1594 if(_config->FindB("DPkgPM::InitialReportOnly",false) == true)
1595 chmod(reportfile.c_str(), 0);
1596 else
1597 chmod(reportfile.c_str(), 0600);
1598 fprintf(report, "ProblemType: Package\n");
1599 fprintf(report, "Architecture: %s\n", arch.c_str());
1600 time_t now = time(NULL);
1601 fprintf(report, "Date: %s" , ctime(&now));
1602 fprintf(report, "Package: %s %s\n", pkgname.c_str(), pkgver.c_str());
1603 fprintf(report, "SourcePackage: %s\n", srcpkgname.c_str());
1604 fprintf(report, "ErrorMessage:\n %s\n", errormsg);
1605
1606 // ensure that the log is flushed
1607 if(d->term_out)
1608 fflush(d->term_out);
1609
1610 // attach terminal log it if we have it
1611 string logfile_name = _config->FindFile("Dir::Log::Terminal");
1612 if (!logfile_name.empty())
1613 {
1614 FILE *log = NULL;
1615
1616 fprintf(report, "DpkgTerminalLog:\n");
1617 log = fopen(logfile_name.c_str(),"r");
1618 if(log != NULL)
1619 {
1620 char buf[1024];
1621 while( fgets(buf, sizeof(buf), log) != NULL)
1622 fprintf(report, " %s", buf);
1623 fclose(log);
1624 }
1625 }
1626
1627 // log the ordering
1628 const char *ops_str[] = {"Install", "Configure","Remove","Purge"};
1629 fprintf(report, "AptOrdering:\n");
1630 for (vector<Item>::iterator I = List.begin(); I != List.end(); ++I)
1631 if ((*I).Pkg != NULL)
1632 fprintf(report, " %s: %s\n", (*I).Pkg.Name(), ops_str[(*I).Op]);
1633 else
1634 fprintf(report, " %s: %s\n", "NULL", ops_str[(*I).Op]);
1635
1636 // attach dmesg log (to learn about segfaults)
1637 if (FileExists("/bin/dmesg"))
1638 {
1639 fprintf(report, "Dmesg:\n");
1640 FILE *log = popen("/bin/dmesg","r");
1641 if(log != NULL)
1642 {
1643 char buf[1024];
1644 while( fgets(buf, sizeof(buf), log) != NULL)
1645 fprintf(report, " %s", buf);
1646 pclose(log);
1647 }
1648 }
1649
1650 // attach df -l log (to learn about filesystem status)
1651 if (FileExists("/bin/df"))
1652 {
1653
1654 fprintf(report, "Df:\n");
1655 FILE *log = popen("/bin/df -l","r");
1656 if(log != NULL)
1657 {
1658 char buf[1024];
1659 while( fgets(buf, sizeof(buf), log) != NULL)
1660 fprintf(report, " %s", buf);
1661 pclose(log);
1662 }
1663 }
1664
1665 fclose(report);
1666
1667 }
1668 /*}}}*/
APT (for Cydia)