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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
23 #include <unistd.h>
24 #include <stdlib.h>
25 #include <fcntl.h>
26 #include <sys/select.h>
27 #include <sys/stat.h>
28 #include <sys/types.h>
29 #include <sys/wait.h>
30 #include <signal.h>
31 #include <errno.h>
32 #include <string.h>
33 #include <stdio.h>
34 #include <string.h>
35 #include <algorithm>
36 #include <sstream>
37 #include <map>
38 #include <pwd.h>
39 #include <grp.h>
40
41 #include <termios.h>
42 #include <unistd.h>
43 #include <sys/ioctl.h>
44 #include <pty.h>
45
46 #include <apti18n.h>
47 /*}}}*/
48
49 using namespace std;
50
51 class pkgDPkgPMPrivate
52 {
53 public:
54 pkgDPkgPMPrivate() : dpkgbuf_pos(0), term_out(NULL), history_out(NULL)
55 {
56 }
57 bool stdin_is_dev_null;
58 // the buffer we use for the dpkg status-fd reading
59 char dpkgbuf[1024];
60 int dpkgbuf_pos;
61 FILE *term_out;
62 FILE *history_out;
63 string dpkg_error;
64 };
65
66 namespace
67 {
68 // Maps the dpkg "processing" info to human readable names. Entry 0
69 // of each array is the key, entry 1 is the value.
70 const std::pair<const char *, const char *> PackageProcessingOps[] = {
71 std::make_pair("install", N_("Installing %s")),
72 std::make_pair("configure", N_("Configuring %s")),
73 std::make_pair("remove", N_("Removing %s")),
74 std::make_pair("purge", N_("Completely removing %s")),
75 std::make_pair("disappear", N_("Noting disappearance of %s")),
76 std::make_pair("trigproc", N_("Running post-installation trigger %s"))
77 };
78
79 const std::pair<const char *, const char *> * const PackageProcessingOpsBegin = PackageProcessingOps;
80 const std::pair<const char *, const char *> * const PackageProcessingOpsEnd = PackageProcessingOps + sizeof(PackageProcessingOps) / sizeof(PackageProcessingOps[0]);
81
82 // Predicate to test whether an entry in the PackageProcessingOps
83 // array matches a string.
84 class MatchProcessingOp
85 {
86 const char *target;
87
88 public:
89 MatchProcessingOp(const char *the_target)
90 : target(the_target)
91 {
92 }
93
94 bool operator()(const std::pair<const char *, const char *> &pair) const
95 {
96 return strcmp(pair.first, target) == 0;
97 }
98 };
99 }
100
101 /* helper function to ionice the given PID
102
103 there is no C header for ionice yet - just the syscall interface
104 so we use the binary from util-linux
105 */
106 static bool
107 ionice(int PID)
108 {
109 if (!FileExists("/usr/bin/ionice"))
110 return false;
111 pid_t Process = ExecFork();
112 if (Process == 0)
113 {
114 char buf[32];
115 snprintf(buf, sizeof(buf), "-p%d", PID);
116 const char *Args[4];
117 Args[0] = "/usr/bin/ionice";
118 Args[1] = "-c3";
119 Args[2] = buf;
120 Args[3] = 0;
121 execv(Args[0], (char **)Args);
122 }
123 return ExecWait(Process, "ionice");
124 }
125
126 // dpkgChrootDirectory - chrooting for dpkg if needed /*{{{*/
127 static void dpkgChrootDirectory()
128 {
129 std::string const chrootDir = _config->FindDir("DPkg::Chroot-Directory");
130 if (chrootDir == "/")
131 return;
132 std::cerr << "Chrooting into " << chrootDir << std::endl;
133 if (chroot(chrootDir.c_str()) != 0)
134 _exit(100);
135 }
136 /*}}}*/
137
138
139 // FindNowVersion - Helper to find a Version in "now" state /*{{{*/
140 // ---------------------------------------------------------------------
141 /* This is helpful when a package is no longer installed but has residual
142 * config files
143 */
144 static
145 pkgCache::VerIterator FindNowVersion(const pkgCache::PkgIterator &Pkg)
146 {
147 pkgCache::VerIterator Ver;
148 for (Ver = Pkg.VersionList(); Ver.end() == false; Ver++)
149 {
150 pkgCache::VerFileIterator Vf = Ver.FileList();
151 pkgCache::PkgFileIterator F = Vf.File();
152 for (F = Vf.File(); F.end() == false; F++)
153 {
154 if (F && F.Archive())
155 {
156 if (strcmp(F.Archive(), "now"))
157 return Ver;
158 }
159 }
160 }
161 return Ver;
162 }
163 /*}}}*/
164
165 // DPkgPM::pkgDPkgPM - Constructor /*{{{*/
166 // ---------------------------------------------------------------------
167 /* */
168 pkgDPkgPM::pkgDPkgPM(pkgDepCache *Cache)
169 : pkgPackageManager(Cache), PackagesDone(0), PackagesTotal(0)
170 {
171 d = new pkgDPkgPMPrivate();
172 }
173 /*}}}*/
174 // DPkgPM::pkgDPkgPM - Destructor /*{{{*/
175 // ---------------------------------------------------------------------
176 /* */
177 pkgDPkgPM::~pkgDPkgPM()
178 {
179 delete d;
180 }
181 /*}}}*/
182 // DPkgPM::Install - Install a package /*{{{*/
183 // ---------------------------------------------------------------------
184 /* Add an install operation to the sequence list */
185 bool pkgDPkgPM::Install(PkgIterator Pkg,string File)
186 {
187 if (File.empty() == true || Pkg.end() == true)
188 return _error->Error("Internal Error, No file name for %s",Pkg.Name());
189
190 // If the filename string begins with DPkg::Chroot-Directory, return the
191 // substr that is within the chroot so dpkg can access it.
192 string const chrootdir = _config->FindDir("DPkg::Chroot-Directory","/");
193 if (chrootdir != "/" && File.find(chrootdir) == 0)
194 {
195 size_t len = chrootdir.length();
196 if (chrootdir.at(len - 1) == '/')
197 len--;
198 List.push_back(Item(Item::Install,Pkg,File.substr(len)));
199 }
200 else
201 List.push_back(Item(Item::Install,Pkg,File));
202
203 return true;
204 }
205 /*}}}*/
206 // DPkgPM::Configure - Configure a package /*{{{*/
207 // ---------------------------------------------------------------------
208 /* Add a configure operation to the sequence list */
209 bool pkgDPkgPM::Configure(PkgIterator Pkg)
210 {
211 if (Pkg.end() == true)
212 return false;
213
214 List.push_back(Item(Item::Configure, Pkg));
215
216 // Use triggers for config calls if we configure "smart"
217 // as otherwise Pre-Depends will not be satisfied, see #526774
218 if (_config->FindB("DPkg::TriggersPending", false) == true)
219 List.push_back(Item(Item::TriggersPending, PkgIterator()));
220
221 return true;
222 }
223 /*}}}*/
224 // DPkgPM::Remove - Remove a package /*{{{*/
225 // ---------------------------------------------------------------------
226 /* Add a remove operation to the sequence list */
227 bool pkgDPkgPM::Remove(PkgIterator Pkg,bool Purge)
228 {
229 if (Pkg.end() == true)
230 return false;
231
232 if (Purge == true)
233 List.push_back(Item(Item::Purge,Pkg));
234 else
235 List.push_back(Item(Item::Remove,Pkg));
236 return true;
237 }
238 /*}}}*/
239 // DPkgPM::SendV2Pkgs - Send version 2 package info /*{{{*/
240 // ---------------------------------------------------------------------
241 /* This is part of the helper script communication interface, it sends
242 very complete information down to the other end of the pipe.*/
243 bool pkgDPkgPM::SendV2Pkgs(FILE *F)
244 {
245 fprintf(F,"VERSION 2\n");
246
247 /* Write out all of the configuration directives by walking the
248 configuration tree */
249 const Configuration::Item *Top = _config->Tree(0);
250 for (; Top != 0;)
251 {
252 if (Top->Value.empty() == false)
253 {
254 fprintf(F,"%s=%s\n",
255 QuoteString(Top->FullTag(),"=\"\n").c_str(),
256 QuoteString(Top->Value,"\n").c_str());
257 }
258
259 if (Top->Child != 0)
260 {
261 Top = Top->Child;
262 continue;
263 }
264
265 while (Top != 0 && Top->Next == 0)
266 Top = Top->Parent;
267 if (Top != 0)
268 Top = Top->Next;
269 }
270 fprintf(F,"\n");
271
272 // Write out the package actions in order.
273 for (vector<Item>::iterator I = List.begin(); I != List.end(); ++I)
274 {
275 if(I->Pkg.end() == true)
276 continue;
277
278 pkgDepCache::StateCache &S = Cache[I->Pkg];
279
280 fprintf(F,"%s ",I->Pkg.Name());
281 // Current version
282 if (I->Pkg->CurrentVer == 0)
283 fprintf(F,"- ");
284 else
285 fprintf(F,"%s ",I->Pkg.CurrentVer().VerStr());
286
287 // Show the compare operator
288 // Target version
289 if (S.InstallVer != 0)
290 {
291 int Comp = 2;
292 if (I->Pkg->CurrentVer != 0)
293 Comp = S.InstVerIter(Cache).CompareVer(I->Pkg.CurrentVer());
294 if (Comp < 0)
295 fprintf(F,"> ");
296 if (Comp == 0)
297 fprintf(F,"= ");
298 if (Comp > 0)
299 fprintf(F,"< ");
300 fprintf(F,"%s ",S.InstVerIter(Cache).VerStr());
301 }
302 else
303 fprintf(F,"> - ");
304
305 // Show the filename/operation
306 if (I->Op == Item::Install)
307 {
308 // No errors here..
309 if (I->File[0] != '/')
310 fprintf(F,"**ERROR**\n");
311 else
312 fprintf(F,"%s\n",I->File.c_str());
313 }
314 if (I->Op == Item::Configure)
315 fprintf(F,"**CONFIGURE**\n");
316 if (I->Op == Item::Remove ||
317 I->Op == Item::Purge)
318 fprintf(F,"**REMOVE**\n");
319
320 if (ferror(F) != 0)
321 return false;
322 }
323 return true;
324 }
325 /*}}}*/
326 // DPkgPM::RunScriptsWithPkgs - Run scripts with package names on stdin /*{{{*/
327 // ---------------------------------------------------------------------
328 /* This looks for a list of scripts to run from the configuration file
329 each one is run and is fed on standard input a list of all .deb files
330 that are due to be installed. */
331 bool pkgDPkgPM::RunScriptsWithPkgs(const char *Cnf)
332 {
333 Configuration::Item const *Opts = _config->Tree(Cnf);
334 if (Opts == 0 || Opts->Child == 0)
335 return true;
336 Opts = Opts->Child;
337
338 unsigned int Count = 1;
339 for (; Opts != 0; Opts = Opts->Next, Count++)
340 {
341 if (Opts->Value.empty() == true)
342 continue;
343
344 // Determine the protocol version
345 string OptSec = Opts->Value;
346 string::size_type Pos;
347 if ((Pos = OptSec.find(' ')) == string::npos || Pos == 0)
348 Pos = OptSec.length();
349 OptSec = "DPkg::Tools::Options::" + string(Opts->Value.c_str(),Pos);
350
351 unsigned int Version = _config->FindI(OptSec+"::Version",1);
352
353 // Create the pipes
354 int Pipes[2];
355 if (pipe(Pipes) != 0)
356 return _error->Errno("pipe","Failed to create IPC pipe to subprocess");
357 SetCloseExec(Pipes[0],true);
358 SetCloseExec(Pipes[1],true);
359
360 // Purified Fork for running the script
361 pid_t Process = ExecFork();
362 if (Process == 0)
363 {
364 // Setup the FDs
365 dup2(Pipes[0],STDIN_FILENO);
366 SetCloseExec(STDOUT_FILENO,false);
367 SetCloseExec(STDIN_FILENO,false);
368 SetCloseExec(STDERR_FILENO,false);
369
370 dpkgChrootDirectory();
371 const char *Args[4];
372 Args[0] = "/bin/sh";
373 Args[1] = "-c";
374 Args[2] = Opts->Value.c_str();
375 Args[3] = 0;
376 execv(Args[0],(char **)Args);
377 _exit(100);
378 }
379 close(Pipes[0]);
380 FILE *F = fdopen(Pipes[1],"w");
381 if (F == 0)
382 return _error->Errno("fdopen","Faild to open new FD");
383
384 // Feed it the filenames.
385 if (Version <= 1)
386 {
387 for (vector<Item>::iterator I = List.begin(); I != List.end(); ++I)
388 {
389 // Only deal with packages to be installed from .deb
390 if (I->Op != Item::Install)
391 continue;
392
393 // No errors here..
394 if (I->File[0] != '/')
395 continue;
396
397 /* Feed the filename of each package that is pending install
398 into the pipe. */
399 fprintf(F,"%s\n",I->File.c_str());
400 if (ferror(F) != 0)
401 break;
402 }
403 }
404 else
405 SendV2Pkgs(F);
406
407 fclose(F);
408
409 // Clean up the sub process
410 if (ExecWait(Process,Opts->Value.c_str()) == false)
411 return _error->Error("Failure running script %s",Opts->Value.c_str());
412 }
413
414 return true;
415 }
416 /*}}}*/
417 // DPkgPM::DoStdin - Read stdin and pass to slave pty /*{{{*/
418 // ---------------------------------------------------------------------
419 /*
420 */
421 void pkgDPkgPM::DoStdin(int master)
422 {
423 unsigned char input_buf[256] = {0,};
424 ssize_t len = read(0, input_buf, sizeof(input_buf));
425 if (len)
426 write(master, input_buf, len);
427 else
428 d->stdin_is_dev_null = true;
429 }
430 /*}}}*/
431 // DPkgPM::DoTerminalPty - Read the terminal pty and write log /*{{{*/
432 // ---------------------------------------------------------------------
433 /*
434 * read the terminal pty and write log
435 */
436 void pkgDPkgPM::DoTerminalPty(int master)
437 {
438 unsigned char term_buf[1024] = {0,0, };
439
440 ssize_t len=read(master, term_buf, sizeof(term_buf));
441 if(len == -1 && errno == EIO)
442 {
443 // this happens when the child is about to exit, we
444 // give it time to actually exit, otherwise we run
445 // into a race so we sleep for half a second.
446 struct timespec sleepfor = { 0, 500000000 };
447 nanosleep(&sleepfor, NULL);
448 return;
449 }
450 if(len <= 0)
451 return;
452 write(1, term_buf, len);
453 if(d->term_out)
454 fwrite(term_buf, len, sizeof(char), d->term_out);
455 }
456 /*}}}*/
457 // DPkgPM::ProcessDpkgStatusBuf /*{{{*/
458 // ---------------------------------------------------------------------
459 /*
460 */
461 void pkgDPkgPM::ProcessDpkgStatusLine(int OutStatusFd, char *line)
462 {
463 bool const Debug = _config->FindB("Debug::pkgDPkgProgressReporting",false);
464 // the status we output
465 ostringstream status;
466
467 if (Debug == true)
468 std::clog << "got from dpkg '" << line << "'" << std::endl;
469
470
471 /* dpkg sends strings like this:
472 'status: <pkg>: <pkg qstate>'
473 errors look like this:
474 '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
475 and conffile-prompt like this
476 'status: conffile-prompt: conffile : 'current-conffile' 'new-conffile' useredited distedited
477
478 Newer versions of dpkg sent also:
479 'processing: install: pkg'
480 'processing: configure: pkg'
481 'processing: remove: pkg'
482 'processing: purge: pkg'
483 'processing: disappear: pkg'
484 'processing: trigproc: trigger'
485
486 */
487 char* list[6];
488 // dpkg sends multiline error messages sometimes (see
489 // #374195 for a example. we should support this by
490 // either patching dpkg to not send multiline over the
491 // statusfd or by rewriting the code here to deal with
492 // it. for now we just ignore it and not crash
493 TokSplitString(':', line, list, sizeof(list)/sizeof(list[0]));
494 if( list[0] == NULL || list[1] == NULL || list[2] == NULL)
495 {
496 if (Debug == true)
497 std::clog << "ignoring line: not enough ':'" << std::endl;
498 return;
499 }
500 const char* const pkg = list[1];
501 const char* action = _strstrip(list[2]);
502
503 // 'processing' from dpkg looks like
504 // 'processing: action: pkg'
505 if(strncmp(list[0], "processing", strlen("processing")) == 0)
506 {
507 char s[200];
508 const char* const pkg_or_trigger = _strstrip(list[2]);
509 action = _strstrip( list[1]);
510 const std::pair<const char *, const char *> * const iter =
511 std::find_if(PackageProcessingOpsBegin,
512 PackageProcessingOpsEnd,
513 MatchProcessingOp(action));
514 if(iter == PackageProcessingOpsEnd)
515 {
516 if (Debug == true)
517 std::clog << "ignoring unknown action: " << action << std::endl;
518 return;
519 }
520 snprintf(s, sizeof(s), _(iter->second), pkg_or_trigger);
521
522 status << "pmstatus:" << pkg_or_trigger
523 << ":" << (PackagesDone/float(PackagesTotal)*100.0)
524 << ":" << s
525 << endl;
526 if(OutStatusFd > 0)
527 write(OutStatusFd, status.str().c_str(), status.str().size());
528 if (Debug == true)
529 std::clog << "send: '" << status.str() << "'" << endl;
530
531 if (strncmp(action, "disappear", strlen("disappear")) == 0)
532 handleDisappearAction(pkg_or_trigger);
533 return;
534 }
535
536 if(strncmp(action,"error",strlen("error")) == 0)
537 {
538 // urgs, sometime has ":" in its error string so that we
539 // end up with the error message split between list[3]
540 // and list[4], e.g. the message:
541 // "failed in buffer_write(fd) (10, ret=-1): backend dpkg-deb ..."
542 // concat them again
543 if( list[4] != NULL )
544 list[3][strlen(list[3])] = ':';
545
546 status << "pmerror:" << list[1]
547 << ":" << (PackagesDone/float(PackagesTotal)*100.0)
548 << ":" << list[3]
549 << endl;
550 if(OutStatusFd > 0)
551 write(OutStatusFd, status.str().c_str(), status.str().size());
552 if (Debug == true)
553 std::clog << "send: '" << status.str() << "'" << endl;
554 pkgFailures++;
555 WriteApportReport(list[1], list[3]);
556 return;
557 }
558 else if(strncmp(action,"conffile",strlen("conffile")) == 0)
559 {
560 status << "pmconffile:" << list[1]
561 << ":" << (PackagesDone/float(PackagesTotal)*100.0)
562 << ":" << list[3]
563 << endl;
564 if(OutStatusFd > 0)
565 write(OutStatusFd, status.str().c_str(), status.str().size());
566 if (Debug == true)
567 std::clog << "send: '" << status.str() << "'" << endl;
568 return;
569 }
570
571 vector<struct DpkgState> const &states = PackageOps[pkg];
572 const char *next_action = NULL;
573 if(PackageOpsDone[pkg] < states.size())
574 next_action = states[PackageOpsDone[pkg]].state;
575 // check if the package moved to the next dpkg state
576 if(next_action && (strcmp(action, next_action) == 0))
577 {
578 // only read the translation if there is actually a next
579 // action
580 const char *translation = _(states[PackageOpsDone[pkg]].str);
581 char s[200];
582 snprintf(s, sizeof(s), translation, pkg);
583
584 // we moved from one dpkg state to a new one, report that
585 PackageOpsDone[pkg]++;
586 PackagesDone++;
587 // build the status str
588 status << "pmstatus:" << pkg
589 << ":" << (PackagesDone/float(PackagesTotal)*100.0)
590 << ":" << s
591 << endl;
592 if(OutStatusFd > 0)
593 write(OutStatusFd, status.str().c_str(), status.str().size());
594 if (Debug == true)
595 std::clog << "send: '" << status.str() << "'" << endl;
596 }
597 if (Debug == true)
598 std::clog << "(parsed from dpkg) pkg: " << pkg
599 << " action: " << action << endl;
600 }
601 /*}}}*/
602 // DPkgPM::handleDisappearAction /*{{{*/
603 void pkgDPkgPM::handleDisappearAction(string const &pkgname)
604 {
605 // record the package name for display and stuff later
606 disappearedPkgs.insert(pkgname);
607
608 pkgCache::PkgIterator Pkg = Cache.FindPkg(pkgname);
609 if (unlikely(Pkg.end() == true))
610 return;
611 // the disappeared package was auto-installed - nothing to do
612 if ((Cache[Pkg].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto)
613 return;
614 pkgCache::VerIterator PkgVer = Cache[Pkg].InstVerIter(Cache);
615 if (unlikely(PkgVer.end() == true))
616 return;
617 /* search in the list of dependencies for (Pre)Depends,
618 check if this dependency has a Replaces on our package
619 and if so transfer the manual installed flag to it */
620 for (pkgCache::DepIterator Dep = PkgVer.DependsList(); Dep.end() != true; ++Dep)
621 {
622 if (Dep->Type != pkgCache::Dep::Depends &&
623 Dep->Type != pkgCache::Dep::PreDepends)
624 continue;
625 pkgCache::PkgIterator Tar = Dep.TargetPkg();
626 if (unlikely(Tar.end() == true))
627 continue;
628 // the package is already marked as manual
629 if ((Cache[Tar].Flags & pkgCache::Flag::Auto) != pkgCache::Flag::Auto)
630 continue;
631 pkgCache::VerIterator TarVer = Cache[Tar].InstVerIter(Cache);
632 if (TarVer.end() == true)
633 continue;
634 for (pkgCache::DepIterator Rep = TarVer.DependsList(); Rep.end() != true; ++Rep)
635 {
636 if (Rep->Type != pkgCache::Dep::Replaces)
637 continue;
638 if (Pkg != Rep.TargetPkg())
639 continue;
640 // okay, they are strongly connected - transfer manual-bit
641 if (Debug == true)
642 std::clog << "transfer manual-bit from disappeared »" << pkgname << "« to »" << Tar.FullName() << "«" << std::endl;
643 Cache[Tar].Flags &= ~Flag::Auto;
644 break;
645 }
646 }
647 }
648 /*}}}*/
649 // DPkgPM::DoDpkgStatusFd /*{{{*/
650 // ---------------------------------------------------------------------
651 /*
652 */
653 void pkgDPkgPM::DoDpkgStatusFd(int statusfd, int OutStatusFd)
654 {
655 char *p, *q;
656 int len;
657
658 len=read(statusfd, &d->dpkgbuf[d->dpkgbuf_pos], sizeof(d->dpkgbuf)-d->dpkgbuf_pos);
659 d->dpkgbuf_pos += len;
660 if(len <= 0)
661 return;
662
663 // process line by line if we have a buffer
664 p = q = d->dpkgbuf;
665 while((q=(char*)memchr(p, '\n', d->dpkgbuf+d->dpkgbuf_pos-p)) != NULL)
666 {
667 *q = 0;
668 ProcessDpkgStatusLine(OutStatusFd, p);
669 p=q+1; // continue with next line
670 }
671
672 // now move the unprocessed bits (after the final \n that is now a 0x0)
673 // to the start and update d->dpkgbuf_pos
674 p = (char*)memrchr(d->dpkgbuf, 0, d->dpkgbuf_pos);
675 if(p == NULL)
676 return;
677
678 // we are interessted in the first char *after* 0x0
679 p++;
680
681 // move the unprocessed tail to the start and update pos
682 memmove(d->dpkgbuf, p, p-d->dpkgbuf);
683 d->dpkgbuf_pos = d->dpkgbuf+d->dpkgbuf_pos-p;
684 }
685 /*}}}*/
686 // DPkgPM::WriteHistoryTag /*{{{*/
687 void pkgDPkgPM::WriteHistoryTag(string const &tag, string value)
688 {
689 size_t const length = value.length();
690 if (length == 0)
691 return;
692 // poor mans rstrip(", ")
693 if (value[length-2] == ',' && value[length-1] == ' ')
694 value.erase(length - 2, 2);
695 fprintf(d->history_out, "%s: %s\n", tag.c_str(), value.c_str());
696 } /*}}}*/
697 // DPkgPM::OpenLog /*{{{*/
698 bool pkgDPkgPM::OpenLog()
699 {
700 string const logdir = _config->FindDir("Dir::Log");
701 if(CreateAPTDirectoryIfNeeded(logdir, logdir) == false)
702 // FIXME: use a better string after freeze
703 return _error->Error(_("Directory '%s' missing"), logdir.c_str());
704
705 // get current time
706 char timestr[200];
707 time_t const t = time(NULL);
708 struct tm const * const tmp = localtime(&t);
709 strftime(timestr, sizeof(timestr), "%F %T", tmp);
710
711 // open terminal log
712 string const logfile_name = flCombine(logdir,
713 _config->Find("Dir::Log::Terminal"));
714 if (!logfile_name.empty())
715 {
716 d->term_out = fopen(logfile_name.c_str(),"a");
717 if (d->term_out == NULL)
718 return _error->WarningE("OpenLog", _("Could not open file '%s'"), logfile_name.c_str());
719 setvbuf(d->term_out, NULL, _IONBF, 0);
720 SetCloseExec(fileno(d->term_out), true);
721 struct passwd *pw;
722 struct group *gr;
723 pw = getpwnam("root");
724 gr = getgrnam("adm");
725 if (pw != NULL && gr != NULL)
726 chown(logfile_name.c_str(), pw->pw_uid, gr->gr_gid);
727 chmod(logfile_name.c_str(), 0644);
728 fprintf(d->term_out, "\nLog started: %s\n", timestr);
729 }
730
731 // write your history
732 string const history_name = flCombine(logdir,
733 _config->Find("Dir::Log::History"));
734 if (!history_name.empty())
735 {
736 d->history_out = fopen(history_name.c_str(),"a");
737 if (d->history_out == NULL)
738 return _error->WarningE("OpenLog", _("Could not open file '%s'"), history_name.c_str());
739 chmod(history_name.c_str(), 0644);
740 fprintf(d->history_out, "\nStart-Date: %s\n", timestr);
741 string remove, purge, install, reinstall, upgrade, downgrade;
742 for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
743 {
744 enum { CANDIDATE, CANDIDATE_AUTO, CURRENT_CANDIDATE, CURRENT } infostring;
745 string *line = NULL;
746 #define HISTORYINFO(X, Y) { line = &X; infostring = Y; }
747 if (Cache[I].NewInstall() == true)
748 HISTORYINFO(install, CANDIDATE_AUTO)
749 else if (Cache[I].ReInstall() == true)
750 HISTORYINFO(reinstall, CANDIDATE)
751 else if (Cache[I].Upgrade() == true)
752 HISTORYINFO(upgrade, CURRENT_CANDIDATE)
753 else if (Cache[I].Downgrade() == true)
754 HISTORYINFO(downgrade, CURRENT_CANDIDATE)
755 else if (Cache[I].Delete() == true)
756 HISTORYINFO((Cache[I].Purge() ? purge : remove), CURRENT)
757 else
758 continue;
759 #undef HISTORYINFO
760 line->append(I.FullName(false)).append(" (");
761 switch (infostring) {
762 case CANDIDATE: line->append(Cache[I].CandVersion); break;
763 case CANDIDATE_AUTO:
764 line->append(Cache[I].CandVersion);
765 if ((Cache[I].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto)
766 line->append(", automatic");
767 break;
768 case CURRENT_CANDIDATE: line->append(Cache[I].CurVersion).append(", ").append(Cache[I].CandVersion); break;
769 case CURRENT: line->append(Cache[I].CurVersion); break;
770 }
771 line->append("), ");
772 }
773 if (_config->Exists("Commandline::AsString") == true)
774 WriteHistoryTag("Commandline", _config->Find("Commandline::AsString"));
775 WriteHistoryTag("Install", install);
776 WriteHistoryTag("Reinstall", reinstall);
777 WriteHistoryTag("Upgrade", upgrade);
778 WriteHistoryTag("Downgrade",downgrade);
779 WriteHistoryTag("Remove",remove);
780 WriteHistoryTag("Purge",purge);
781 fflush(d->history_out);
782 }
783
784 return true;
785 }
786 /*}}}*/
787 // DPkg::CloseLog /*{{{*/
788 bool pkgDPkgPM::CloseLog()
789 {
790 char timestr[200];
791 time_t t = time(NULL);
792 struct tm *tmp = localtime(&t);
793 strftime(timestr, sizeof(timestr), "%F %T", tmp);
794
795 if(d->term_out)
796 {
797 fprintf(d->term_out, "Log ended: ");
798 fprintf(d->term_out, "%s", timestr);
799 fprintf(d->term_out, "\n");
800 fclose(d->term_out);
801 }
802 d->term_out = NULL;
803
804 if(d->history_out)
805 {
806 if (disappearedPkgs.empty() == false)
807 {
808 string disappear;
809 for (std::set<std::string>::const_iterator d = disappearedPkgs.begin();
810 d != disappearedPkgs.end(); ++d)
811 {
812 pkgCache::PkgIterator P = Cache.FindPkg(*d);
813 disappear.append(*d);
814 if (P.end() == true)
815 disappear.append(", ");
816 else
817 disappear.append(" (").append(Cache[P].CurVersion).append("), ");
818 }
819 WriteHistoryTag("Disappeared", disappear);
820 }
821 if (d->dpkg_error.empty() == false)
822 fprintf(d->history_out, "Error: %s\n", d->dpkg_error.c_str());
823 fprintf(d->history_out, "End-Date: %s\n", timestr);
824 fclose(d->history_out);
825 }
826 d->history_out = NULL;
827
828 return true;
829 }
830 /*}}}*/
831 /*{{{*/
832 // This implements a racy version of pselect for those architectures
833 // that don't have a working implementation.
834 // FIXME: Probably can be removed on Lenny+1
835 static int racy_pselect(int nfds, fd_set *readfds, fd_set *writefds,
836 fd_set *exceptfds, const struct timespec *timeout,
837 const sigset_t *sigmask)
838 {
839 sigset_t origmask;
840 struct timeval tv;
841 int retval;
842
843 tv.tv_sec = timeout->tv_sec;
844 tv.tv_usec = timeout->tv_nsec/1000;
845
846 sigprocmask(SIG_SETMASK, sigmask, &origmask);
847 retval = select(nfds, readfds, writefds, exceptfds, &tv);
848 sigprocmask(SIG_SETMASK, &origmask, 0);
849 return retval;
850 }
851 /*}}}*/
852 // DPkgPM::Go - Run the sequence /*{{{*/
853 // ---------------------------------------------------------------------
854 /* This globs the operations and calls dpkg
855 *
856 * If it is called with "OutStatusFd" set to a valid file descriptor
857 * apt will report the install progress over this fd. It maps the
858 * dpkg states a package goes through to human readable (and i10n-able)
859 * names and calculates a percentage for each step.
860 */
861 bool pkgDPkgPM::Go(int OutStatusFd)
862 {
863 pkgPackageManager::SigINTStop = false;
864
865 // Generate the base argument list for dpkg
866 std::vector<const char *> Args;
867 unsigned long StartSize = 0;
868 string Tmp = _config->Find("Dir::Bin::dpkg","dpkg");
869 {
870 string const dpkgChrootDir = _config->FindDir("DPkg::Chroot-Directory", "/");
871 size_t dpkgChrootLen = dpkgChrootDir.length();
872 if (dpkgChrootDir != "/" && Tmp.find(dpkgChrootDir) == 0)
873 {
874 if (dpkgChrootDir[dpkgChrootLen - 1] == '/')
875 --dpkgChrootLen;
876 Tmp = Tmp.substr(dpkgChrootLen);
877 }
878 }
879 Args.push_back(Tmp.c_str());
880 StartSize += Tmp.length();
881
882 // Stick in any custom dpkg options
883 Configuration::Item const *Opts = _config->Tree("DPkg::Options");
884 if (Opts != 0)
885 {
886 Opts = Opts->Child;
887 for (; Opts != 0; Opts = Opts->Next)
888 {
889 if (Opts->Value.empty() == true)
890 continue;
891 Args.push_back(Opts->Value.c_str());
892 StartSize += Opts->Value.length();
893 }
894 }
895
896 size_t const BaseArgs = Args.size();
897 // we need to detect if we can qualify packages with the architecture or not
898 Args.push_back("--assert-multi-arch");
899 Args.push_back(NULL);
900
901 pid_t dpkgAssertMultiArch = ExecFork();
902 if (dpkgAssertMultiArch == 0)
903 {
904 dpkgChrootDirectory();
905 // redirect everything to the ultimate sink as we only need the exit-status
906 int const nullfd = open("/dev/null", O_RDONLY);
907 dup2(nullfd, STDIN_FILENO);
908 dup2(nullfd, STDOUT_FILENO);
909 dup2(nullfd, STDERR_FILENO);
910 execvp(Args[0], (char**) &Args[0]);
911 _error->WarningE("dpkgGo", "Can't detect if dpkg supports multi-arch!");
912 _exit(2);
913 }
914
915 fd_set rfds;
916 struct timespec tv;
917 sigset_t sigmask;
918 sigset_t original_sigmask;
919
920 unsigned int const MaxArgs = _config->FindI("Dpkg::MaxArgs",8*1024);
921 unsigned int const MaxArgBytes = _config->FindI("Dpkg::MaxArgBytes",32*1024);
922 bool const NoTriggers = _config->FindB("DPkg::NoTriggers", false);
923
924 if (RunScripts("DPkg::Pre-Invoke") == false)
925 return false;
926
927 if (RunScriptsWithPkgs("DPkg::Pre-Install-Pkgs") == false)
928 return false;
929
930 // support subpressing of triggers processing for special
931 // cases like d-i that runs the triggers handling manually
932 bool const SmartConf = (_config->Find("PackageManager::Configure", "all") != "all");
933 bool const TriggersPending = _config->FindB("DPkg::TriggersPending", false);
934 if (_config->FindB("DPkg::ConfigurePending", SmartConf) == true)
935 List.push_back(Item(Item::ConfigurePending, PkgIterator()));
936
937 // map the dpkg states to the operations that are performed
938 // (this is sorted in the same way as Item::Ops)
939 static const struct DpkgState DpkgStatesOpMap[][7] = {
940 // Install operation
941 {
942 {"half-installed", N_("Preparing %s")},
943 {"unpacked", N_("Unpacking %s") },
944 {NULL, NULL}
945 },
946 // Configure operation
947 {
948 {"unpacked",N_("Preparing to configure %s") },
949 {"half-configured", N_("Configuring %s") },
950 { "installed", N_("Installed %s")},
951 {NULL, NULL}
952 },
953 // Remove operation
954 {
955 {"half-configured", N_("Preparing for removal of %s")},
956 {"half-installed", N_("Removing %s")},
957 {"config-files", N_("Removed %s")},
958 {NULL, NULL}
959 },
960 // Purge operation
961 {
962 {"config-files", N_("Preparing to completely remove %s")},
963 {"not-installed", N_("Completely removed %s")},
964 {NULL, NULL}
965 },
966 };
967
968 // init the PackageOps map, go over the list of packages that
969 // that will be [installed|configured|removed|purged] and add
970 // them to the PackageOps map (the dpkg states it goes through)
971 // and the PackageOpsTranslations (human readable strings)
972 for (vector<Item>::const_iterator I = List.begin(); I != List.end(); ++I)
973 {
974 if((*I).Pkg.end() == true)
975 continue;
976
977 string const name = (*I).Pkg.Name();
978 PackageOpsDone[name] = 0;
979 for(int i=0; (DpkgStatesOpMap[(*I).Op][i]).state != NULL; ++i)
980 {
981 PackageOps[name].push_back(DpkgStatesOpMap[(*I).Op][i]);
982 PackagesTotal++;
983 }
984 }
985
986 d->stdin_is_dev_null = false;
987
988 // create log
989 OpenLog();
990
991 bool dpkgMultiArch = false;
992 if (dpkgAssertMultiArch > 0)
993 {
994 int Status = 0;
995 while (waitpid(dpkgAssertMultiArch, &Status, 0) != dpkgAssertMultiArch)
996 {
997 if (errno == EINTR)
998 continue;
999 _error->WarningE("dpkgGo", _("Waited for %s but it wasn't there"), "dpkg --assert-multi-arch");
1000 break;
1001 }
1002 if (WIFEXITED(Status) == true && WEXITSTATUS(Status) == 0)
1003 dpkgMultiArch = true;
1004 }
1005
1006 // this loop is runs once per operation
1007 for (vector<Item>::const_iterator I = List.begin(); I != List.end();)
1008 {
1009 // Do all actions with the same Op in one run
1010 vector<Item>::const_iterator J = I;
1011 if (TriggersPending == true)
1012 for (; J != List.end(); ++J)
1013 {
1014 if (J->Op == I->Op)
1015 continue;
1016 if (J->Op != Item::TriggersPending)
1017 break;
1018 vector<Item>::const_iterator T = J + 1;
1019 if (T != List.end() && T->Op == I->Op)
1020 continue;
1021 break;
1022 }
1023 else
1024 for (; J != List.end() && J->Op == I->Op; ++J)
1025 /* nothing */;
1026
1027 // keep track of allocated strings for multiarch package names
1028 std::vector<char *> Packages;
1029
1030 // start with the baseset of arguments
1031 unsigned long Size = StartSize;
1032 Args.erase(Args.begin() + BaseArgs, Args.end());
1033
1034 // Now check if we are within the MaxArgs limit
1035 //
1036 // this code below is problematic, because it may happen that
1037 // the argument list is split in a way that A depends on B
1038 // and they are in the same "--configure A B" run
1039 // - with the split they may now be configured in different
1040 // runs, using Immediate-Configure-All can help prevent this.
1041 if (J - I > (signed)MaxArgs)
1042 {
1043 J = I + MaxArgs;
1044 unsigned long const size = MaxArgs + 10;
1045 Args.reserve(size);
1046 Packages.reserve(size);
1047 }
1048 else
1049 {
1050 unsigned long const size = (J - I) + 10;
1051 Args.reserve(size);
1052 Packages.reserve(size);
1053 }
1054
1055 int fd[2];
1056 pipe(fd);
1057
1058 #define ADDARG(X) Args.push_back(X); Size += strlen(X)
1059 #define ADDARGC(X) Args.push_back(X); Size += sizeof(X) - 1
1060
1061 ADDARGC("--status-fd");
1062 char status_fd_buf[20];
1063 snprintf(status_fd_buf,sizeof(status_fd_buf),"%i", fd[1]);
1064 ADDARG(status_fd_buf);
1065 unsigned long const Op = I->Op;
1066
1067 switch (I->Op)
1068 {
1069 case Item::Remove:
1070 ADDARGC("--force-depends");
1071 ADDARGC("--force-remove-essential");
1072 ADDARGC("--remove");
1073 break;
1074
1075 case Item::Purge:
1076 ADDARGC("--force-depends");
1077 ADDARGC("--force-remove-essential");
1078 ADDARGC("--purge");
1079 break;
1080
1081 case Item::Configure:
1082 ADDARGC("--configure");
1083 break;
1084
1085 case Item::ConfigurePending:
1086 ADDARGC("--configure");
1087 ADDARGC("--pending");
1088 break;
1089
1090 case Item::TriggersPending:
1091 ADDARGC("--triggers-only");
1092 ADDARGC("--pending");
1093 break;
1094
1095 case Item::Install:
1096 ADDARGC("--unpack");
1097 ADDARGC("--auto-deconfigure");
1098 break;
1099 }
1100
1101 if (NoTriggers == true && I->Op != Item::TriggersPending &&
1102 I->Op != Item::ConfigurePending)
1103 {
1104 ADDARGC("--no-triggers");
1105 }
1106 #undef ADDARGC
1107
1108 // Write in the file or package names
1109 if (I->Op == Item::Install)
1110 {
1111 for (;I != J && Size < MaxArgBytes; ++I)
1112 {
1113 if (I->File[0] != '/')
1114 return _error->Error("Internal Error, Pathname to install is not absolute '%s'",I->File.c_str());
1115 Args.push_back(I->File.c_str());
1116 Size += I->File.length();
1117 }
1118 }
1119 else
1120 {
1121 string const nativeArch = _config->Find("APT::Architecture");
1122 unsigned long const oldSize = I->Op == Item::Configure ? Size : 0;
1123 for (;I != J && Size < MaxArgBytes; ++I)
1124 {
1125 if((*I).Pkg.end() == true)
1126 continue;
1127 if (I->Op == Item::Configure && disappearedPkgs.find(I->Pkg.Name()) != disappearedPkgs.end())
1128 continue;
1129 // We keep this here to allow "smooth" transitions from e.g. multiarch dpkg/ubuntu to dpkg/debian
1130 if (dpkgMultiArch == false && (I->Pkg.Arch() == nativeArch || !strcmp(I->Pkg.Arch(), "all")))
1131 {
1132 char const * const name = I->Pkg.Name();
1133 ADDARG(name);
1134 }
1135 else
1136 {
1137 pkgCache::VerIterator PkgVer;
1138 std::string name = I->Pkg.Name();
1139 if (Op == Item::Remove || Op == Item::Purge)
1140 {
1141 PkgVer = I->Pkg.CurrentVer();
1142 if(PkgVer.end() == true)
1143 PkgVer = FindNowVersion(I->Pkg);
1144 }
1145 else
1146 PkgVer = Cache[I->Pkg].InstVerIter(Cache);
1147 if (PkgVer.end() == false)
1148 name.append(":").append(PkgVer.Arch());
1149 else
1150 _error->Warning("Can not find PkgVer for '%s'", name.c_str());
1151 char * const fullname = strdup(name.c_str());
1152 Packages.push_back(fullname);
1153 ADDARG(fullname);
1154 }
1155 }
1156 // skip configure action if all sheduled packages disappeared
1157 if (oldSize == Size)
1158 continue;
1159 }
1160 #undef ADDARG
1161
1162 J = I;
1163
1164 if (_config->FindB("Debug::pkgDPkgPM",false) == true)
1165 {
1166 for (std::vector<const char *>::const_iterator a = Args.begin();
1167 a != Args.end(); ++a)
1168 clog << *a << ' ';
1169 clog << endl;
1170 continue;
1171 }
1172 Args.push_back(NULL);
1173
1174 cout << flush;
1175 clog << flush;
1176 cerr << flush;
1177
1178 /* Mask off sig int/quit. We do this because dpkg also does when
1179 it forks scripts. What happens is that when you hit ctrl-c it sends
1180 it to all processes in the group. Since dpkg ignores the signal
1181 it doesn't die but we do! So we must also ignore it */
1182 sighandler_t old_SIGQUIT = signal(SIGQUIT,SIG_IGN);
1183 sighandler_t old_SIGINT = signal(SIGINT,SigINT);
1184
1185 // Check here for any SIGINT
1186 if (pkgPackageManager::SigINTStop && (Op == Item::Remove || Op == Item::Purge || Op == Item::Install))
1187 break;
1188
1189
1190 // ignore SIGHUP as well (debian #463030)
1191 sighandler_t old_SIGHUP = signal(SIGHUP,SIG_IGN);
1192
1193 struct termios tt;
1194 struct winsize win;
1195 int master = -1;
1196 int slave = -1;
1197
1198 // if tcgetattr does not return zero there was a error
1199 // and we do not do any pty magic
1200 if (tcgetattr(0, &tt) == 0)
1201 {
1202 ioctl(0, TIOCGWINSZ, (char *)&win);
1203 if (openpty(&master, &slave, NULL, &tt, &win) < 0)
1204 {
1205 const char *s = _("Can not write log, openpty() "
1206 "failed (/dev/pts not mounted?)\n");
1207 fprintf(stderr, "%s",s);
1208 if(d->term_out)
1209 fprintf(d->term_out, "%s",s);
1210 master = slave = -1;
1211 } else {
1212 struct termios rtt;
1213 rtt = tt;
1214 cfmakeraw(&rtt);
1215 rtt.c_lflag &= ~ECHO;
1216 rtt.c_lflag |= ISIG;
1217 // block SIGTTOU during tcsetattr to prevent a hang if
1218 // the process is a member of the background process group
1219 // http://www.opengroup.org/onlinepubs/000095399/functions/tcsetattr.html
1220 sigemptyset(&sigmask);
1221 sigaddset(&sigmask, SIGTTOU);
1222 sigprocmask(SIG_BLOCK,&sigmask, &original_sigmask);
1223 tcsetattr(0, TCSAFLUSH, &rtt);
1224 sigprocmask(SIG_SETMASK, &original_sigmask, 0);
1225 }
1226 }
1227 // Fork dpkg
1228 pid_t Child;
1229 _config->Set("APT::Keep-Fds::",fd[1]);
1230 // send status information that we are about to fork dpkg
1231 if(OutStatusFd > 0) {
1232 ostringstream status;
1233 status << "pmstatus:dpkg-exec:"
1234 << (PackagesDone/float(PackagesTotal)*100.0)
1235 << ":" << _("Running dpkg")
1236 << endl;
1237 write(OutStatusFd, status.str().c_str(), status.str().size());
1238 }
1239 Child = ExecFork();
1240
1241 // This is the child
1242 if (Child == 0)
1243 {
1244 if(slave >= 0 && master >= 0)
1245 {
1246 setsid();
1247 ioctl(slave, TIOCSCTTY, 0);
1248 close(master);
1249 dup2(slave, 0);
1250 dup2(slave, 1);
1251 dup2(slave, 2);
1252 close(slave);
1253 }
1254 close(fd[0]); // close the read end of the pipe
1255
1256 dpkgChrootDirectory();
1257
1258 if (chdir(_config->FindDir("DPkg::Run-Directory","/").c_str()) != 0)
1259 _exit(100);
1260
1261 if (_config->FindB("DPkg::FlushSTDIN",true) == true && isatty(STDIN_FILENO))
1262 {
1263 int Flags,dummy;
1264 if ((Flags = fcntl(STDIN_FILENO,F_GETFL,dummy)) < 0)
1265 _exit(100);
1266
1267 // Discard everything in stdin before forking dpkg
1268 if (fcntl(STDIN_FILENO,F_SETFL,Flags | O_NONBLOCK) < 0)
1269 _exit(100);
1270
1271 while (read(STDIN_FILENO,&dummy,1) == 1);
1272
1273 if (fcntl(STDIN_FILENO,F_SETFL,Flags & (~(long)O_NONBLOCK)) < 0)
1274 _exit(100);
1275 }
1276
1277 /* No Job Control Stop Env is a magic dpkg var that prevents it
1278 from using sigstop */
1279 putenv((char *)"DPKG_NO_TSTP=yes");
1280 execvp(Args[0], (char**) &Args[0]);
1281 cerr << "Could not exec dpkg!" << endl;
1282 _exit(100);
1283 }
1284
1285 // apply ionice
1286 if (_config->FindB("DPkg::UseIoNice", false) == true)
1287 ionice(Child);
1288
1289 // clear the Keep-Fd again
1290 _config->Clear("APT::Keep-Fds",fd[1]);
1291
1292 // Wait for dpkg
1293 int Status = 0;
1294
1295 // we read from dpkg here
1296 int const _dpkgin = fd[0];
1297 close(fd[1]); // close the write end of the pipe
1298
1299 if(slave > 0)
1300 close(slave);
1301
1302 // setups fds
1303 sigemptyset(&sigmask);
1304 sigprocmask(SIG_BLOCK,&sigmask,&original_sigmask);
1305
1306 /* free vectors (and therefore memory) as we don't need the included data anymore */
1307 for (std::vector<char *>::const_iterator p = Packages.begin();
1308 p != Packages.end(); ++p)
1309 free(*p);
1310 Packages.clear();
1311
1312 // the result of the waitpid call
1313 int res;
1314 int select_ret;
1315 while ((res=waitpid(Child,&Status, WNOHANG)) != Child) {
1316 if(res < 0) {
1317 // FIXME: move this to a function or something, looks ugly here
1318 // error handling, waitpid returned -1
1319 if (errno == EINTR)
1320 continue;
1321 RunScripts("DPkg::Post-Invoke");
1322
1323 // Restore sig int/quit
1324 signal(SIGQUIT,old_SIGQUIT);
1325 signal(SIGINT,old_SIGINT);
1326
1327 signal(SIGHUP,old_SIGHUP);
1328 return _error->Errno("waitpid","Couldn't wait for subprocess");
1329 }
1330
1331 // wait for input or output here
1332 FD_ZERO(&rfds);
1333 if (master >= 0 && !d->stdin_is_dev_null)
1334 FD_SET(0, &rfds);
1335 FD_SET(_dpkgin, &rfds);
1336 if(master >= 0)
1337 FD_SET(master, &rfds);
1338 tv.tv_sec = 1;
1339 tv.tv_nsec = 0;
1340 select_ret = pselect(max(master, _dpkgin)+1, &rfds, NULL, NULL,
1341 &tv, &original_sigmask);
1342 if (select_ret < 0 && (errno == EINVAL || errno == ENOSYS))
1343 select_ret = racy_pselect(max(master, _dpkgin)+1, &rfds, NULL,
1344 NULL, &tv, &original_sigmask);
1345 if (select_ret == 0)
1346 continue;
1347 else if (select_ret < 0 && errno == EINTR)
1348 continue;
1349 else if (select_ret < 0)
1350 {
1351 perror("select() returned error");
1352 continue;
1353 }
1354
1355 if(master >= 0 && FD_ISSET(master, &rfds))
1356 DoTerminalPty(master);
1357 if(master >= 0 && FD_ISSET(0, &rfds))
1358 DoStdin(master);
1359 if(FD_ISSET(_dpkgin, &rfds))
1360 DoDpkgStatusFd(_dpkgin, OutStatusFd);
1361 }
1362 close(_dpkgin);
1363
1364 // Restore sig int/quit
1365 signal(SIGQUIT,old_SIGQUIT);
1366 signal(SIGINT,old_SIGINT);
1367
1368 signal(SIGHUP,old_SIGHUP);
1369
1370 if(master >= 0)
1371 {
1372 tcsetattr(0, TCSAFLUSH, &tt);
1373 close(master);
1374 }
1375
1376 // Check for an error code.
1377 if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
1378 {
1379 // if it was set to "keep-dpkg-runing" then we won't return
1380 // here but keep the loop going and just report it as a error
1381 // for later
1382 bool const stopOnError = _config->FindB("Dpkg::StopOnError",true);
1383
1384 if(stopOnError)
1385 RunScripts("DPkg::Post-Invoke");
1386
1387 if (WIFSIGNALED(Status) != 0 && WTERMSIG(Status) == SIGSEGV)
1388 strprintf(d->dpkg_error, "Sub-process %s received a segmentation fault.",Args[0]);
1389 else if (WIFEXITED(Status) != 0)
1390 strprintf(d->dpkg_error, "Sub-process %s returned an error code (%u)",Args[0],WEXITSTATUS(Status));
1391 else
1392 strprintf(d->dpkg_error, "Sub-process %s exited unexpectedly",Args[0]);
1393
1394 if(d->dpkg_error.size() > 0)
1395 _error->Error("%s", d->dpkg_error.c_str());
1396
1397 if(stopOnError)
1398 {
1399 CloseLog();
1400 return false;
1401 }
1402 }
1403 }
1404 CloseLog();
1405
1406 if (pkgPackageManager::SigINTStop)
1407 _error->Warning(_("Operation was interrupted before it could finish"));
1408
1409 if (RunScripts("DPkg::Post-Invoke") == false)
1410 return false;
1411
1412 if (_config->FindB("Debug::pkgDPkgPM",false) == false)
1413 {
1414 std::string const oldpkgcache = _config->FindFile("Dir::cache::pkgcache");
1415 if (oldpkgcache.empty() == false && RealFileExists(oldpkgcache) == true &&
1416 unlink(oldpkgcache.c_str()) == 0)
1417 {
1418 std::string const srcpkgcache = _config->FindFile("Dir::cache::srcpkgcache");
1419 if (srcpkgcache.empty() == false && RealFileExists(srcpkgcache) == true)
1420 {
1421 _error->PushToStack();
1422 pkgCacheFile CacheFile;
1423 CacheFile.BuildCaches(NULL, true);
1424 _error->RevertToStack();
1425 }
1426 }
1427 }
1428
1429 Cache.writeStateFile(NULL);
1430 return true;
1431 }
1432
1433 void SigINT(int sig) {
1434 pkgPackageManager::SigINTStop = true;
1435 }
1436 /*}}}*/
1437 // pkgDpkgPM::Reset - Dump the contents of the command list /*{{{*/
1438 // ---------------------------------------------------------------------
1439 /* */
1440 void pkgDPkgPM::Reset()
1441 {
1442 List.erase(List.begin(),List.end());
1443 }
1444 /*}}}*/
1445 // pkgDpkgPM::WriteApportReport - write out error report pkg failure /*{{{*/
1446 // ---------------------------------------------------------------------
1447 /* */
1448 void pkgDPkgPM::WriteApportReport(const char *pkgpath, const char *errormsg)
1449 {
1450 // If apport doesn't exist or isn't installed do nothing
1451 // This e.g. prevents messages in 'universes' without apport
1452 pkgCache::PkgIterator apportPkg = Cache.FindPkg("apport");
1453 if (apportPkg.end() == true || apportPkg->CurrentVer == 0)
1454 return;
1455
1456 string pkgname, reportfile, srcpkgname, pkgver, arch;
1457 string::size_type pos;
1458 FILE *report;
1459
1460 if (_config->FindB("Dpkg::ApportFailureReport", false) == false)
1461 {
1462 std::clog << "configured to not write apport reports" << std::endl;
1463 return;
1464 }
1465
1466 // only report the first errors
1467 if(pkgFailures > _config->FindI("APT::Apport::MaxReports", 3))
1468 {
1469 std::clog << _("No apport report written because MaxReports is reached already") << std::endl;
1470 return;
1471 }
1472
1473 // check if its not a follow up error
1474 const char *needle = dgettext("dpkg", "dependency problems - leaving unconfigured");
1475 if(strstr(errormsg, needle) != NULL) {
1476 std::clog << _("No apport report written because the error message indicates its a followup error from a previous failure.") << std::endl;
1477 return;
1478 }
1479
1480 // do not report disk-full failures
1481 if(strstr(errormsg, strerror(ENOSPC)) != NULL) {
1482 std::clog << _("No apport report written because the error message indicates a disk full error") << std::endl;
1483 return;
1484 }
1485
1486 // do not report out-of-memory failures
1487 if(strstr(errormsg, strerror(ENOMEM)) != NULL) {
1488 std::clog << _("No apport report written because the error message indicates a out of memory error") << std::endl;
1489 return;
1490 }
1491
1492 // do not report dpkg I/O errors
1493 // XXX - this message is localized, but this only matches the English version. This is better than nothing.
1494 if(strstr(errormsg, "short read in buffer_copy (")) {
1495 std::clog << _("No apport report written because the error message indicates a dpkg I/O error") << std::endl;
1496 return;
1497 }
1498
1499 // get the pkgname and reportfile
1500 pkgname = flNotDir(pkgpath);
1501 pos = pkgname.find('_');
1502 if(pos != string::npos)
1503 pkgname = pkgname.substr(0, pos);
1504
1505 // find the package versin and source package name
1506 pkgCache::PkgIterator Pkg = Cache.FindPkg(pkgname);
1507 if (Pkg.end() == true)
1508 return;
1509 pkgCache::VerIterator Ver = Cache.GetCandidateVer(Pkg);
1510 if (Ver.end() == true)
1511 return;
1512 pkgver = Ver.VerStr() == NULL ? "unknown" : Ver.VerStr();
1513 pkgRecords Recs(Cache);
1514 pkgRecords::Parser &Parse = Recs.Lookup(Ver.FileList());
1515 srcpkgname = Parse.SourcePkg();
1516 if(srcpkgname.empty())
1517 srcpkgname = pkgname;
1518
1519 // if the file exists already, we check:
1520 // - if it was reported already (touched by apport).
1521 // If not, we do nothing, otherwise
1522 // we overwrite it. This is the same behaviour as apport
1523 // - if we have a report with the same pkgversion already
1524 // then we skip it
1525 reportfile = flCombine("/var/crash",pkgname+".0.crash");
1526 if(FileExists(reportfile))
1527 {
1528 struct stat buf;
1529 char strbuf[255];
1530
1531 // check atime/mtime
1532 stat(reportfile.c_str(), &buf);
1533 if(buf.st_mtime > buf.st_atime)
1534 return;
1535
1536 // check if the existing report is the same version
1537 report = fopen(reportfile.c_str(),"r");
1538 while(fgets(strbuf, sizeof(strbuf), report) != NULL)
1539 {
1540 if(strstr(strbuf,"Package:") == strbuf)
1541 {
1542 char pkgname[255], version[255];
1543 if(sscanf(strbuf, "Package: %s %s", pkgname, version) == 2)
1544 if(strcmp(pkgver.c_str(), version) == 0)
1545 {
1546 fclose(report);
1547 return;
1548 }
1549 }
1550 }
1551 fclose(report);
1552 }
1553
1554 // now write the report
1555 arch = _config->Find("APT::Architecture");
1556 report = fopen(reportfile.c_str(),"w");
1557 if(report == NULL)
1558 return;
1559 if(_config->FindB("DPkgPM::InitialReportOnly",false) == true)
1560 chmod(reportfile.c_str(), 0);
1561 else
1562 chmod(reportfile.c_str(), 0600);
1563 fprintf(report, "ProblemType: Package\n");
1564 fprintf(report, "Architecture: %s\n", arch.c_str());
1565 time_t now = time(NULL);
1566 fprintf(report, "Date: %s" , ctime(&now));
1567 fprintf(report, "Package: %s %s\n", pkgname.c_str(), pkgver.c_str());
1568 fprintf(report, "SourcePackage: %s\n", srcpkgname.c_str());
1569 fprintf(report, "ErrorMessage:\n %s\n", errormsg);
1570
1571 // ensure that the log is flushed
1572 if(d->term_out)
1573 fflush(d->term_out);
1574
1575 // attach terminal log it if we have it
1576 string logfile_name = _config->FindFile("Dir::Log::Terminal");
1577 if (!logfile_name.empty())
1578 {
1579 FILE *log = NULL;
1580 char buf[1024];
1581
1582 fprintf(report, "DpkgTerminalLog:\n");
1583 log = fopen(logfile_name.c_str(),"r");
1584 if(log != NULL)
1585 {
1586 while( fgets(buf, sizeof(buf), log) != NULL)
1587 fprintf(report, " %s", buf);
1588 fclose(log);
1589 }
1590 }
1591
1592 // log the ordering
1593 const char *ops_str[] = {"Install", "Configure","Remove","Purge"};
1594 fprintf(report, "AptOrdering:\n");
1595 for (vector<Item>::iterator I = List.begin(); I != List.end(); ++I)
1596 fprintf(report, " %s: %s\n", (*I).Pkg.Name(), ops_str[(*I).Op]);
1597
1598 // attach dmesg log (to learn about segfaults)
1599 if (FileExists("/bin/dmesg"))
1600 {
1601 FILE *log = NULL;
1602 char buf[1024];
1603
1604 fprintf(report, "Dmesg:\n");
1605 log = popen("/bin/dmesg","r");
1606 if(log != NULL)
1607 {
1608 while( fgets(buf, sizeof(buf), log) != NULL)
1609 fprintf(report, " %s", buf);
1610 pclose(log);
1611 }
1612 }
1613
1614 // attach df -l log (to learn about filesystem status)
1615 if (FileExists("/bin/df"))
1616 {
1617 FILE *log = NULL;
1618 char buf[1024];
1619
1620 fprintf(report, "Df:\n");
1621 log = popen("/bin/df -l","r");
1622 if(log != NULL)
1623 {
1624 while( fgets(buf, sizeof(buf), log) != NULL)
1625 fprintf(report, " %s", buf);
1626 pclose(log);
1627 }
1628 }
1629
1630 fclose(report);
1631
1632 }
1633 /*}}}*/
APT (for Cydia)