| 1 | // -*- mode: cpp; mode: fold -*- |
| 2 | // Description /*{{{*/ |
| 3 | // $Id: dpkgpm.cc,v 1.28 2004/01/27 02:25:01 mdz Exp $ |
| 4 | /* ###################################################################### |
| 5 | |
| 6 | DPKG Package Manager - Provide an interface to dpkg |
| 7 | |
| 8 | ##################################################################### */ |
| 9 | /*}}}*/ |
| 10 | // Includes /*{{{*/ |
| 11 | #include <apt-pkg/dpkgpm.h> |
| 12 | #include <apt-pkg/error.h> |
| 13 | #include <apt-pkg/configuration.h> |
| 14 | #include <apt-pkg/depcache.h> |
| 15 | #include <apt-pkg/strutl.h> |
| 16 | #include <apti18n.h> |
| 17 | #include <apt-pkg/fileutl.h> |
| 18 | |
| 19 | #include <unistd.h> |
| 20 | #include <stdlib.h> |
| 21 | #include <fcntl.h> |
| 22 | #include <sys/select.h> |
| 23 | #include <sys/types.h> |
| 24 | #include <sys/wait.h> |
| 25 | #include <signal.h> |
| 26 | #include <errno.h> |
| 27 | #include <stdio.h> |
| 28 | #include <string.h> |
| 29 | #include <algorithm> |
| 30 | #include <sstream> |
| 31 | #include <map> |
| 32 | |
| 33 | #include <termios.h> |
| 34 | #include <unistd.h> |
| 35 | #include <sys/ioctl.h> |
| 36 | #include <pty.h> |
| 37 | |
| 38 | #include <config.h> |
| 39 | #include <apti18n.h> |
| 40 | /*}}}*/ |
| 41 | |
| 42 | using namespace std; |
| 43 | |
| 44 | namespace |
| 45 | { |
| 46 | // Maps the dpkg "processing" info to human readable names. Entry 0 |
| 47 | // of each array is the key, entry 1 is the value. |
| 48 | const std::pair<const char *, const char *> PackageProcessingOps[] = { |
| 49 | std::make_pair("install", N_("Installing %s")), |
| 50 | std::make_pair("configure", N_("Configuring %s")), |
| 51 | std::make_pair("remove", N_("Removing %s")), |
| 52 | std::make_pair("purge", N_("Completely removing %s")), |
| 53 | std::make_pair("trigproc", N_("Running post-installation trigger %s")) |
| 54 | }; |
| 55 | |
| 56 | const std::pair<const char *, const char *> * const PackageProcessingOpsBegin = PackageProcessingOps; |
| 57 | const std::pair<const char *, const char *> * const PackageProcessingOpsEnd = PackageProcessingOps + sizeof(PackageProcessingOps) / sizeof(PackageProcessingOps[0]); |
| 58 | |
| 59 | // Predicate to test whether an entry in the PackageProcessingOps |
| 60 | // array matches a string. |
| 61 | class MatchProcessingOp |
| 62 | { |
| 63 | const char *target; |
| 64 | |
| 65 | public: |
| 66 | MatchProcessingOp(const char *the_target) |
| 67 | : target(the_target) |
| 68 | { |
| 69 | } |
| 70 | |
| 71 | bool operator()(const std::pair<const char *, const char *> &pair) const |
| 72 | { |
| 73 | return strcmp(pair.first, target) == 0; |
| 74 | } |
| 75 | }; |
| 76 | } |
| 77 | |
| 78 | /* helper function to ionice the given PID |
| 79 | |
| 80 | there is no C header for ionice yet - just the syscall interface |
| 81 | so we use the binary from util-linux |
| 82 | */ |
| 83 | static bool |
| 84 | ionice(int PID) |
| 85 | { |
| 86 | if (!FileExists("/usr/bin/ionice")) |
| 87 | return false; |
| 88 | pid_t Process = ExecFork(); |
| 89 | if (Process == 0) |
| 90 | { |
| 91 | char buf[32]; |
| 92 | snprintf(buf, sizeof(buf), "-p%d", PID); |
| 93 | const char *Args[4]; |
| 94 | Args[0] = "/usr/bin/ionice"; |
| 95 | Args[1] = "-c3"; |
| 96 | Args[2] = buf; |
| 97 | Args[3] = 0; |
| 98 | execv(Args[0], (char **)Args); |
| 99 | } |
| 100 | return ExecWait(Process, "ionice"); |
| 101 | } |
| 102 | |
| 103 | // DPkgPM::pkgDPkgPM - Constructor /*{{{*/ |
| 104 | // --------------------------------------------------------------------- |
| 105 | /* */ |
| 106 | pkgDPkgPM::pkgDPkgPM(pkgDepCache *Cache) |
| 107 | : pkgPackageManager(Cache), dpkgbuf_pos(0), |
| 108 | term_out(NULL), PackagesDone(0), PackagesTotal(0) |
| 109 | { |
| 110 | } |
| 111 | /*}}}*/ |
| 112 | // DPkgPM::pkgDPkgPM - Destructor /*{{{*/ |
| 113 | // --------------------------------------------------------------------- |
| 114 | /* */ |
| 115 | pkgDPkgPM::~pkgDPkgPM() |
| 116 | { |
| 117 | } |
| 118 | /*}}}*/ |
| 119 | // DPkgPM::Install - Install a package /*{{{*/ |
| 120 | // --------------------------------------------------------------------- |
| 121 | /* Add an install operation to the sequence list */ |
| 122 | bool pkgDPkgPM::Install(PkgIterator Pkg,string File) |
| 123 | { |
| 124 | if (File.empty() == true || Pkg.end() == true) |
| 125 | return _error->Error("Internal Error, No file name for %s",Pkg.Name()); |
| 126 | |
| 127 | List.push_back(Item(Item::Install,Pkg,File)); |
| 128 | return true; |
| 129 | } |
| 130 | /*}}}*/ |
| 131 | // DPkgPM::Configure - Configure a package /*{{{*/ |
| 132 | // --------------------------------------------------------------------- |
| 133 | /* Add a configure operation to the sequence list */ |
| 134 | bool pkgDPkgPM::Configure(PkgIterator Pkg) |
| 135 | { |
| 136 | if (Pkg.end() == true) |
| 137 | return false; |
| 138 | |
| 139 | List.push_back(Item(Item::Configure, Pkg)); |
| 140 | |
| 141 | // Use triggers for config calls if we configure "smart" |
| 142 | // as otherwise Pre-Depends will not be satisfied, see #526774 |
| 143 | if (_config->FindB("DPkg::TriggersPending", false) == true) |
| 144 | List.push_back(Item(Item::TriggersPending, PkgIterator())); |
| 145 | |
| 146 | return true; |
| 147 | } |
| 148 | /*}}}*/ |
| 149 | // DPkgPM::Remove - Remove a package /*{{{*/ |
| 150 | // --------------------------------------------------------------------- |
| 151 | /* Add a remove operation to the sequence list */ |
| 152 | bool pkgDPkgPM::Remove(PkgIterator Pkg,bool Purge) |
| 153 | { |
| 154 | if (Pkg.end() == true) |
| 155 | return false; |
| 156 | |
| 157 | if (Purge == true) |
| 158 | List.push_back(Item(Item::Purge,Pkg)); |
| 159 | else |
| 160 | List.push_back(Item(Item::Remove,Pkg)); |
| 161 | return true; |
| 162 | } |
| 163 | /*}}}*/ |
| 164 | // DPkgPM::SendV2Pkgs - Send version 2 package info /*{{{*/ |
| 165 | // --------------------------------------------------------------------- |
| 166 | /* This is part of the helper script communication interface, it sends |
| 167 | very complete information down to the other end of the pipe.*/ |
| 168 | bool pkgDPkgPM::SendV2Pkgs(FILE *F) |
| 169 | { |
| 170 | fprintf(F,"VERSION 2\n"); |
| 171 | |
| 172 | /* Write out all of the configuration directives by walking the |
| 173 | configuration tree */ |
| 174 | const Configuration::Item *Top = _config->Tree(0); |
| 175 | for (; Top != 0;) |
| 176 | { |
| 177 | if (Top->Value.empty() == false) |
| 178 | { |
| 179 | fprintf(F,"%s=%s\n", |
| 180 | QuoteString(Top->FullTag(),"=\"\n").c_str(), |
| 181 | QuoteString(Top->Value,"\n").c_str()); |
| 182 | } |
| 183 | |
| 184 | if (Top->Child != 0) |
| 185 | { |
| 186 | Top = Top->Child; |
| 187 | continue; |
| 188 | } |
| 189 | |
| 190 | while (Top != 0 && Top->Next == 0) |
| 191 | Top = Top->Parent; |
| 192 | if (Top != 0) |
| 193 | Top = Top->Next; |
| 194 | } |
| 195 | fprintf(F,"\n"); |
| 196 | |
| 197 | // Write out the package actions in order. |
| 198 | for (vector<Item>::iterator I = List.begin(); I != List.end(); I++) |
| 199 | { |
| 200 | if(I->Pkg.end() == true) |
| 201 | continue; |
| 202 | |
| 203 | pkgDepCache::StateCache &S = Cache[I->Pkg]; |
| 204 | |
| 205 | fprintf(F,"%s ",I->Pkg.Name()); |
| 206 | // Current version |
| 207 | if (I->Pkg->CurrentVer == 0) |
| 208 | fprintf(F,"- "); |
| 209 | else |
| 210 | fprintf(F,"%s ",I->Pkg.CurrentVer().VerStr()); |
| 211 | |
| 212 | // Show the compare operator |
| 213 | // Target version |
| 214 | if (S.InstallVer != 0) |
| 215 | { |
| 216 | int Comp = 2; |
| 217 | if (I->Pkg->CurrentVer != 0) |
| 218 | Comp = S.InstVerIter(Cache).CompareVer(I->Pkg.CurrentVer()); |
| 219 | if (Comp < 0) |
| 220 | fprintf(F,"> "); |
| 221 | if (Comp == 0) |
| 222 | fprintf(F,"= "); |
| 223 | if (Comp > 0) |
| 224 | fprintf(F,"< "); |
| 225 | fprintf(F,"%s ",S.InstVerIter(Cache).VerStr()); |
| 226 | } |
| 227 | else |
| 228 | fprintf(F,"> - "); |
| 229 | |
| 230 | // Show the filename/operation |
| 231 | if (I->Op == Item::Install) |
| 232 | { |
| 233 | // No errors here.. |
| 234 | if (I->File[0] != '/') |
| 235 | fprintf(F,"**ERROR**\n"); |
| 236 | else |
| 237 | fprintf(F,"%s\n",I->File.c_str()); |
| 238 | } |
| 239 | if (I->Op == Item::Configure) |
| 240 | fprintf(F,"**CONFIGURE**\n"); |
| 241 | if (I->Op == Item::Remove || |
| 242 | I->Op == Item::Purge) |
| 243 | fprintf(F,"**REMOVE**\n"); |
| 244 | |
| 245 | if (ferror(F) != 0) |
| 246 | return false; |
| 247 | } |
| 248 | return true; |
| 249 | } |
| 250 | /*}}}*/ |
| 251 | // DPkgPM::RunScriptsWithPkgs - Run scripts with package names on stdin /*{{{*/ |
| 252 | // --------------------------------------------------------------------- |
| 253 | /* This looks for a list of scripts to run from the configuration file |
| 254 | each one is run and is fed on standard input a list of all .deb files |
| 255 | that are due to be installed. */ |
| 256 | bool pkgDPkgPM::RunScriptsWithPkgs(const char *Cnf) |
| 257 | { |
| 258 | Configuration::Item const *Opts = _config->Tree(Cnf); |
| 259 | if (Opts == 0 || Opts->Child == 0) |
| 260 | return true; |
| 261 | Opts = Opts->Child; |
| 262 | |
| 263 | unsigned int Count = 1; |
| 264 | for (; Opts != 0; Opts = Opts->Next, Count++) |
| 265 | { |
| 266 | if (Opts->Value.empty() == true) |
| 267 | continue; |
| 268 | |
| 269 | // Determine the protocol version |
| 270 | string OptSec = Opts->Value; |
| 271 | string::size_type Pos; |
| 272 | if ((Pos = OptSec.find(' ')) == string::npos || Pos == 0) |
| 273 | Pos = OptSec.length(); |
| 274 | OptSec = "DPkg::Tools::Options::" + string(Opts->Value.c_str(),Pos); |
| 275 | |
| 276 | unsigned int Version = _config->FindI(OptSec+"::Version",1); |
| 277 | |
| 278 | // Create the pipes |
| 279 | int Pipes[2]; |
| 280 | if (pipe(Pipes) != 0) |
| 281 | return _error->Errno("pipe","Failed to create IPC pipe to subprocess"); |
| 282 | SetCloseExec(Pipes[0],true); |
| 283 | SetCloseExec(Pipes[1],true); |
| 284 | |
| 285 | // Purified Fork for running the script |
| 286 | pid_t Process = ExecFork(); |
| 287 | if (Process == 0) |
| 288 | { |
| 289 | // Setup the FDs |
| 290 | dup2(Pipes[0],STDIN_FILENO); |
| 291 | SetCloseExec(STDOUT_FILENO,false); |
| 292 | SetCloseExec(STDIN_FILENO,false); |
| 293 | SetCloseExec(STDERR_FILENO,false); |
| 294 | |
| 295 | const char *Args[4]; |
| 296 | Args[0] = "/bin/sh"; |
| 297 | Args[1] = "-c"; |
| 298 | Args[2] = Opts->Value.c_str(); |
| 299 | Args[3] = 0; |
| 300 | execv(Args[0],(char **)Args); |
| 301 | _exit(100); |
| 302 | } |
| 303 | close(Pipes[0]); |
| 304 | FILE *F = fdopen(Pipes[1],"w"); |
| 305 | if (F == 0) |
| 306 | return _error->Errno("fdopen","Faild to open new FD"); |
| 307 | |
| 308 | // Feed it the filenames. |
| 309 | bool Die = false; |
| 310 | if (Version <= 1) |
| 311 | { |
| 312 | for (vector<Item>::iterator I = List.begin(); I != List.end(); I++) |
| 313 | { |
| 314 | // Only deal with packages to be installed from .deb |
| 315 | if (I->Op != Item::Install) |
| 316 | continue; |
| 317 | |
| 318 | // No errors here.. |
| 319 | if (I->File[0] != '/') |
| 320 | continue; |
| 321 | |
| 322 | /* Feed the filename of each package that is pending install |
| 323 | into the pipe. */ |
| 324 | fprintf(F,"%s\n",I->File.c_str()); |
| 325 | if (ferror(F) != 0) |
| 326 | { |
| 327 | Die = true; |
| 328 | break; |
| 329 | } |
| 330 | } |
| 331 | } |
| 332 | else |
| 333 | Die = !SendV2Pkgs(F); |
| 334 | |
| 335 | fclose(F); |
| 336 | |
| 337 | // Clean up the sub process |
| 338 | if (ExecWait(Process,Opts->Value.c_str()) == false) |
| 339 | return _error->Error("Failure running script %s",Opts->Value.c_str()); |
| 340 | } |
| 341 | |
| 342 | return true; |
| 343 | } |
| 344 | |
| 345 | /*}}}*/ |
| 346 | // DPkgPM::DoStdin - Read stdin and pass to slave pty /*{{{*/ |
| 347 | // --------------------------------------------------------------------- |
| 348 | /* |
| 349 | */ |
| 350 | void pkgDPkgPM::DoStdin(int master) |
| 351 | { |
| 352 | unsigned char input_buf[256] = {0,}; |
| 353 | ssize_t len = read(0, input_buf, sizeof(input_buf)); |
| 354 | if (len) |
| 355 | write(master, input_buf, len); |
| 356 | else |
| 357 | stdin_is_dev_null = true; |
| 358 | } |
| 359 | /*}}}*/ |
| 360 | // DPkgPM::DoTerminalPty - Read the terminal pty and write log /*{{{*/ |
| 361 | // --------------------------------------------------------------------- |
| 362 | /* |
| 363 | * read the terminal pty and write log |
| 364 | */ |
| 365 | void pkgDPkgPM::DoTerminalPty(int master) |
| 366 | { |
| 367 | unsigned char term_buf[1024] = {0,0, }; |
| 368 | |
| 369 | ssize_t len=read(master, term_buf, sizeof(term_buf)); |
| 370 | if(len == -1 && errno == EIO) |
| 371 | { |
| 372 | // this happens when the child is about to exit, we |
| 373 | // give it time to actually exit, otherwise we run |
| 374 | // into a race |
| 375 | usleep(500000); |
| 376 | return; |
| 377 | } |
| 378 | if(len <= 0) |
| 379 | return; |
| 380 | write(1, term_buf, len); |
| 381 | if(term_out) |
| 382 | fwrite(term_buf, len, sizeof(char), term_out); |
| 383 | } |
| 384 | /*}}}*/ |
| 385 | // DPkgPM::ProcessDpkgStatusBuf /*{{{*/ |
| 386 | // --------------------------------------------------------------------- |
| 387 | /* |
| 388 | */ |
| 389 | void pkgDPkgPM::ProcessDpkgStatusLine(int OutStatusFd, char *line) |
| 390 | { |
| 391 | bool const Debug = _config->FindB("Debug::pkgDPkgProgressReporting",false); |
| 392 | // the status we output |
| 393 | ostringstream status; |
| 394 | |
| 395 | if (Debug == true) |
| 396 | std::clog << "got from dpkg '" << line << "'" << std::endl; |
| 397 | |
| 398 | |
| 399 | /* dpkg sends strings like this: |
| 400 | 'status: <pkg>: <pkg qstate>' |
| 401 | errors look like this: |
| 402 | '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 |
| 403 | and conffile-prompt like this |
| 404 | 'status: conffile-prompt: conffile : 'current-conffile' 'new-conffile' useredited distedited |
| 405 | |
| 406 | Newer versions of dpkg sent also: |
| 407 | 'processing: install: pkg' |
| 408 | 'processing: configure: pkg' |
| 409 | 'processing: remove: pkg' |
| 410 | 'processing: purge: pkg' - but for apt is it a ignored "unknown" action |
| 411 | 'processing: trigproc: trigger' |
| 412 | |
| 413 | */ |
| 414 | char* list[5]; |
| 415 | // dpkg sends multiline error messages sometimes (see |
| 416 | // #374195 for a example. we should support this by |
| 417 | // either patching dpkg to not send multiline over the |
| 418 | // statusfd or by rewriting the code here to deal with |
| 419 | // it. for now we just ignore it and not crash |
| 420 | TokSplitString(':', line, list, sizeof(list)/sizeof(list[0])); |
| 421 | if( list[0] == NULL || list[1] == NULL || list[2] == NULL) |
| 422 | { |
| 423 | if (Debug == true) |
| 424 | std::clog << "ignoring line: not enough ':'" << std::endl; |
| 425 | return; |
| 426 | } |
| 427 | const char* const pkg = list[1]; |
| 428 | const char* action = _strstrip(list[2]); |
| 429 | |
| 430 | // 'processing' from dpkg looks like |
| 431 | // 'processing: action: pkg' |
| 432 | if(strncmp(list[0], "processing", strlen("processing")) == 0) |
| 433 | { |
| 434 | char s[200]; |
| 435 | const char* const pkg_or_trigger = _strstrip(list[2]); |
| 436 | action = _strstrip( list[1]); |
| 437 | const std::pair<const char *, const char *> * const iter = |
| 438 | std::find_if(PackageProcessingOpsBegin, |
| 439 | PackageProcessingOpsEnd, |
| 440 | MatchProcessingOp(action)); |
| 441 | if(iter == PackageProcessingOpsEnd) |
| 442 | { |
| 443 | if (Debug == true) |
| 444 | std::clog << "ignoring unknown action: " << action << std::endl; |
| 445 | return; |
| 446 | } |
| 447 | snprintf(s, sizeof(s), _(iter->second), pkg_or_trigger); |
| 448 | |
| 449 | status << "pmstatus:" << pkg_or_trigger |
| 450 | << ":" << (PackagesDone/float(PackagesTotal)*100.0) |
| 451 | << ":" << s |
| 452 | << endl; |
| 453 | if(OutStatusFd > 0) |
| 454 | write(OutStatusFd, status.str().c_str(), status.str().size()); |
| 455 | if (Debug == true) |
| 456 | std::clog << "send: '" << status.str() << "'" << endl; |
| 457 | return; |
| 458 | } |
| 459 | |
| 460 | if(strncmp(action,"error",strlen("error")) == 0) |
| 461 | { |
| 462 | status << "pmerror:" << list[1] |
| 463 | << ":" << (PackagesDone/float(PackagesTotal)*100.0) |
| 464 | << ":" << list[3] |
| 465 | << endl; |
| 466 | if(OutStatusFd > 0) |
| 467 | write(OutStatusFd, status.str().c_str(), status.str().size()); |
| 468 | if (Debug == true) |
| 469 | std::clog << "send: '" << status.str() << "'" << endl; |
| 470 | return; |
| 471 | } |
| 472 | else if(strncmp(action,"conffile",strlen("conffile")) == 0) |
| 473 | { |
| 474 | status << "pmconffile:" << list[1] |
| 475 | << ":" << (PackagesDone/float(PackagesTotal)*100.0) |
| 476 | << ":" << list[3] |
| 477 | << endl; |
| 478 | if(OutStatusFd > 0) |
| 479 | write(OutStatusFd, status.str().c_str(), status.str().size()); |
| 480 | if (Debug == true) |
| 481 | std::clog << "send: '" << status.str() << "'" << endl; |
| 482 | return; |
| 483 | } |
| 484 | |
| 485 | vector<struct DpkgState> const &states = PackageOps[pkg]; |
| 486 | const char *next_action = NULL; |
| 487 | if(PackageOpsDone[pkg] < states.size()) |
| 488 | next_action = states[PackageOpsDone[pkg]].state; |
| 489 | // check if the package moved to the next dpkg state |
| 490 | if(next_action && (strcmp(action, next_action) == 0)) |
| 491 | { |
| 492 | // only read the translation if there is actually a next |
| 493 | // action |
| 494 | const char *translation = _(states[PackageOpsDone[pkg]].str); |
| 495 | char s[200]; |
| 496 | snprintf(s, sizeof(s), translation, pkg); |
| 497 | |
| 498 | // we moved from one dpkg state to a new one, report that |
| 499 | PackageOpsDone[pkg]++; |
| 500 | PackagesDone++; |
| 501 | // build the status str |
| 502 | status << "pmstatus:" << pkg |
| 503 | << ":" << (PackagesDone/float(PackagesTotal)*100.0) |
| 504 | << ":" << s |
| 505 | << endl; |
| 506 | if(OutStatusFd > 0) |
| 507 | write(OutStatusFd, status.str().c_str(), status.str().size()); |
| 508 | if (Debug == true) |
| 509 | std::clog << "send: '" << status.str() << "'" << endl; |
| 510 | } |
| 511 | if (Debug == true) |
| 512 | std::clog << "(parsed from dpkg) pkg: " << pkg |
| 513 | << " action: " << action << endl; |
| 514 | } |
| 515 | /*}}}*/ |
| 516 | // DPkgPM::DoDpkgStatusFd /*{{{*/ |
| 517 | // --------------------------------------------------------------------- |
| 518 | /* |
| 519 | */ |
| 520 | void pkgDPkgPM::DoDpkgStatusFd(int statusfd, int OutStatusFd) |
| 521 | { |
| 522 | char *p, *q; |
| 523 | int len; |
| 524 | |
| 525 | len=read(statusfd, &dpkgbuf[dpkgbuf_pos], sizeof(dpkgbuf)-dpkgbuf_pos); |
| 526 | dpkgbuf_pos += len; |
| 527 | if(len <= 0) |
| 528 | return; |
| 529 | |
| 530 | // process line by line if we have a buffer |
| 531 | p = q = dpkgbuf; |
| 532 | while((q=(char*)memchr(p, '\n', dpkgbuf+dpkgbuf_pos-p)) != NULL) |
| 533 | { |
| 534 | *q = 0; |
| 535 | ProcessDpkgStatusLine(OutStatusFd, p); |
| 536 | p=q+1; // continue with next line |
| 537 | } |
| 538 | |
| 539 | // now move the unprocessed bits (after the final \n that is now a 0x0) |
| 540 | // to the start and update dpkgbuf_pos |
| 541 | p = (char*)memrchr(dpkgbuf, 0, dpkgbuf_pos); |
| 542 | if(p == NULL) |
| 543 | return; |
| 544 | |
| 545 | // we are interessted in the first char *after* 0x0 |
| 546 | p++; |
| 547 | |
| 548 | // move the unprocessed tail to the start and update pos |
| 549 | memmove(dpkgbuf, p, p-dpkgbuf); |
| 550 | dpkgbuf_pos = dpkgbuf+dpkgbuf_pos-p; |
| 551 | } |
| 552 | /*}}}*/ |
| 553 | // DPkgPM::OpenLog /*{{{*/ |
| 554 | bool pkgDPkgPM::OpenLog() |
| 555 | { |
| 556 | string logdir = _config->FindDir("Dir::Log"); |
| 557 | if(not FileExists(logdir)) |
| 558 | return _error->Error(_("Directory '%s' missing"), logdir.c_str()); |
| 559 | string logfile_name = flCombine(logdir, |
| 560 | _config->Find("Dir::Log::Terminal")); |
| 561 | if (!logfile_name.empty()) |
| 562 | { |
| 563 | term_out = fopen(logfile_name.c_str(),"a"); |
| 564 | chmod(logfile_name.c_str(), 0600); |
| 565 | // output current time |
| 566 | char outstr[200]; |
| 567 | time_t t = time(NULL); |
| 568 | struct tm *tmp = localtime(&t); |
| 569 | strftime(outstr, sizeof(outstr), "%F %T", tmp); |
| 570 | fprintf(term_out, "\nLog started: "); |
| 571 | fprintf(term_out, "%s", outstr); |
| 572 | fprintf(term_out, "\n"); |
| 573 | } |
| 574 | return true; |
| 575 | } |
| 576 | /*}}}*/ |
| 577 | // DPkg::CloseLog /*{{{*/ |
| 578 | bool pkgDPkgPM::CloseLog() |
| 579 | { |
| 580 | if(term_out) |
| 581 | { |
| 582 | char outstr[200]; |
| 583 | time_t t = time(NULL); |
| 584 | struct tm *tmp = localtime(&t); |
| 585 | strftime(outstr, sizeof(outstr), "%F %T", tmp); |
| 586 | fprintf(term_out, "Log ended: "); |
| 587 | fprintf(term_out, "%s", outstr); |
| 588 | fprintf(term_out, "\n"); |
| 589 | fclose(term_out); |
| 590 | } |
| 591 | term_out = NULL; |
| 592 | return true; |
| 593 | } |
| 594 | /*}}}*/ |
| 595 | /*{{{*/ |
| 596 | // This implements a racy version of pselect for those architectures |
| 597 | // that don't have a working implementation. |
| 598 | // FIXME: Probably can be removed on Lenny+1 |
| 599 | static int racy_pselect(int nfds, fd_set *readfds, fd_set *writefds, |
| 600 | fd_set *exceptfds, const struct timespec *timeout, |
| 601 | const sigset_t *sigmask) |
| 602 | { |
| 603 | sigset_t origmask; |
| 604 | struct timeval tv; |
| 605 | int retval; |
| 606 | |
| 607 | tv.tv_sec = timeout->tv_sec; |
| 608 | tv.tv_usec = timeout->tv_nsec/1000; |
| 609 | |
| 610 | sigprocmask(SIG_SETMASK, sigmask, &origmask); |
| 611 | retval = select(nfds, readfds, writefds, exceptfds, &tv); |
| 612 | sigprocmask(SIG_SETMASK, &origmask, 0); |
| 613 | return retval; |
| 614 | } |
| 615 | /*}}}*/ |
| 616 | // DPkgPM::Go - Run the sequence /*{{{*/ |
| 617 | // --------------------------------------------------------------------- |
| 618 | /* This globs the operations and calls dpkg |
| 619 | * |
| 620 | * If it is called with "OutStatusFd" set to a valid file descriptor |
| 621 | * apt will report the install progress over this fd. It maps the |
| 622 | * dpkg states a package goes through to human readable (and i10n-able) |
| 623 | * names and calculates a percentage for each step. |
| 624 | */ |
| 625 | bool pkgDPkgPM::Go(int OutStatusFd) |
| 626 | { |
| 627 | fd_set rfds; |
| 628 | struct timespec tv; |
| 629 | sigset_t sigmask; |
| 630 | sigset_t original_sigmask; |
| 631 | |
| 632 | unsigned int const MaxArgs = _config->FindI("Dpkg::MaxArgs",8*1024); |
| 633 | unsigned int const MaxArgBytes = _config->FindI("Dpkg::MaxArgBytes",32*1024); |
| 634 | bool const NoTriggers = _config->FindB("DPkg::NoTriggers", false); |
| 635 | |
| 636 | if (RunScripts("DPkg::Pre-Invoke") == false) |
| 637 | return false; |
| 638 | |
| 639 | if (RunScriptsWithPkgs("DPkg::Pre-Install-Pkgs") == false) |
| 640 | return false; |
| 641 | |
| 642 | // support subpressing of triggers processing for special |
| 643 | // cases like d-i that runs the triggers handling manually |
| 644 | bool const SmartConf = (_config->Find("PackageManager::Configure", "all") != "all"); |
| 645 | bool const TriggersPending = _config->FindB("DPkg::TriggersPending", false); |
| 646 | if (_config->FindB("DPkg::ConfigurePending", SmartConf) == true) |
| 647 | List.push_back(Item(Item::ConfigurePending, PkgIterator())); |
| 648 | |
| 649 | // map the dpkg states to the operations that are performed |
| 650 | // (this is sorted in the same way as Item::Ops) |
| 651 | static const struct DpkgState DpkgStatesOpMap[][7] = { |
| 652 | // Install operation |
| 653 | { |
| 654 | {"half-installed", N_("Preparing %s")}, |
| 655 | {"unpacked", N_("Unpacking %s") }, |
| 656 | {NULL, NULL} |
| 657 | }, |
| 658 | // Configure operation |
| 659 | { |
| 660 | {"unpacked",N_("Preparing to configure %s") }, |
| 661 | {"half-configured", N_("Configuring %s") }, |
| 662 | { "installed", N_("Installed %s")}, |
| 663 | {NULL, NULL} |
| 664 | }, |
| 665 | // Remove operation |
| 666 | { |
| 667 | {"half-configured", N_("Preparing for removal of %s")}, |
| 668 | {"half-installed", N_("Removing %s")}, |
| 669 | {"config-files", N_("Removed %s")}, |
| 670 | {NULL, NULL} |
| 671 | }, |
| 672 | // Purge operation |
| 673 | { |
| 674 | {"config-files", N_("Preparing to completely remove %s")}, |
| 675 | {"not-installed", N_("Completely removed %s")}, |
| 676 | {NULL, NULL} |
| 677 | }, |
| 678 | }; |
| 679 | |
| 680 | // init the PackageOps map, go over the list of packages that |
| 681 | // that will be [installed|configured|removed|purged] and add |
| 682 | // them to the PackageOps map (the dpkg states it goes through) |
| 683 | // and the PackageOpsTranslations (human readable strings) |
| 684 | for (vector<Item>::const_iterator I = List.begin(); I != List.end();I++) |
| 685 | { |
| 686 | if((*I).Pkg.end() == true) |
| 687 | continue; |
| 688 | |
| 689 | string const name = (*I).Pkg.Name(); |
| 690 | PackageOpsDone[name] = 0; |
| 691 | for(int i=0; (DpkgStatesOpMap[(*I).Op][i]).state != NULL; i++) |
| 692 | { |
| 693 | PackageOps[name].push_back(DpkgStatesOpMap[(*I).Op][i]); |
| 694 | PackagesTotal++; |
| 695 | } |
| 696 | } |
| 697 | |
| 698 | stdin_is_dev_null = false; |
| 699 | |
| 700 | // create log |
| 701 | OpenLog(); |
| 702 | |
| 703 | // this loop is runs once per operation |
| 704 | for (vector<Item>::const_iterator I = List.begin(); I != List.end();) |
| 705 | { |
| 706 | // Do all actions with the same Op in one run |
| 707 | vector<Item>::const_iterator J = I; |
| 708 | if (TriggersPending == true) |
| 709 | for (; J != List.end(); J++) |
| 710 | { |
| 711 | if (J->Op == I->Op) |
| 712 | continue; |
| 713 | if (J->Op != Item::TriggersPending) |
| 714 | break; |
| 715 | vector<Item>::const_iterator T = J + 1; |
| 716 | if (T != List.end() && T->Op == I->Op) |
| 717 | continue; |
| 718 | break; |
| 719 | } |
| 720 | else |
| 721 | for (; J != List.end() && J->Op == I->Op; J++) |
| 722 | /* nothing */; |
| 723 | |
| 724 | // Generate the argument list |
| 725 | const char *Args[MaxArgs + 50]; |
| 726 | |
| 727 | // Now check if we are within the MaxArgs limit |
| 728 | // |
| 729 | // this code below is problematic, because it may happen that |
| 730 | // the argument list is split in a way that A depends on B |
| 731 | // and they are in the same "--configure A B" run |
| 732 | // - with the split they may now be configured in different |
| 733 | // runs |
| 734 | if (J - I > (signed)MaxArgs) |
| 735 | J = I + MaxArgs; |
| 736 | |
| 737 | unsigned int n = 0; |
| 738 | unsigned long Size = 0; |
| 739 | string const Tmp = _config->Find("Dir::Bin::dpkg","dpkg"); |
| 740 | Args[n++] = Tmp.c_str(); |
| 741 | Size += strlen(Args[n-1]); |
| 742 | |
| 743 | // Stick in any custom dpkg options |
| 744 | Configuration::Item const *Opts = _config->Tree("DPkg::Options"); |
| 745 | if (Opts != 0) |
| 746 | { |
| 747 | Opts = Opts->Child; |
| 748 | for (; Opts != 0; Opts = Opts->Next) |
| 749 | { |
| 750 | if (Opts->Value.empty() == true) |
| 751 | continue; |
| 752 | Args[n++] = Opts->Value.c_str(); |
| 753 | Size += Opts->Value.length(); |
| 754 | } |
| 755 | } |
| 756 | |
| 757 | char status_fd_buf[20]; |
| 758 | int fd[2]; |
| 759 | pipe(fd); |
| 760 | |
| 761 | Args[n++] = "--status-fd"; |
| 762 | Size += strlen(Args[n-1]); |
| 763 | snprintf(status_fd_buf,sizeof(status_fd_buf),"%i", fd[1]); |
| 764 | Args[n++] = status_fd_buf; |
| 765 | Size += strlen(Args[n-1]); |
| 766 | |
| 767 | switch (I->Op) |
| 768 | { |
| 769 | case Item::Remove: |
| 770 | Args[n++] = "--force-depends"; |
| 771 | Size += strlen(Args[n-1]); |
| 772 | Args[n++] = "--force-remove-essential"; |
| 773 | Size += strlen(Args[n-1]); |
| 774 | Args[n++] = "--remove"; |
| 775 | Size += strlen(Args[n-1]); |
| 776 | break; |
| 777 | |
| 778 | case Item::Purge: |
| 779 | Args[n++] = "--force-depends"; |
| 780 | Size += strlen(Args[n-1]); |
| 781 | Args[n++] = "--force-remove-essential"; |
| 782 | Size += strlen(Args[n-1]); |
| 783 | Args[n++] = "--purge"; |
| 784 | Size += strlen(Args[n-1]); |
| 785 | break; |
| 786 | |
| 787 | case Item::Configure: |
| 788 | Args[n++] = "--configure"; |
| 789 | Size += strlen(Args[n-1]); |
| 790 | break; |
| 791 | |
| 792 | case Item::ConfigurePending: |
| 793 | Args[n++] = "--configure"; |
| 794 | Size += strlen(Args[n-1]); |
| 795 | Args[n++] = "--pending"; |
| 796 | Size += strlen(Args[n-1]); |
| 797 | break; |
| 798 | |
| 799 | case Item::TriggersPending: |
| 800 | Args[n++] = "--triggers-only"; |
| 801 | Size += strlen(Args[n-1]); |
| 802 | Args[n++] = "--pending"; |
| 803 | Size += strlen(Args[n-1]); |
| 804 | break; |
| 805 | |
| 806 | case Item::Install: |
| 807 | Args[n++] = "--unpack"; |
| 808 | Size += strlen(Args[n-1]); |
| 809 | Args[n++] = "--auto-deconfigure"; |
| 810 | Size += strlen(Args[n-1]); |
| 811 | break; |
| 812 | } |
| 813 | |
| 814 | if (NoTriggers == true && I->Op != Item::TriggersPending && |
| 815 | I->Op != Item::ConfigurePending) |
| 816 | { |
| 817 | Args[n++] = "--no-triggers"; |
| 818 | Size += strlen(Args[n-1]); |
| 819 | } |
| 820 | |
| 821 | // Write in the file or package names |
| 822 | if (I->Op == Item::Install) |
| 823 | { |
| 824 | for (;I != J && Size < MaxArgBytes; I++) |
| 825 | { |
| 826 | if (I->File[0] != '/') |
| 827 | return _error->Error("Internal Error, Pathname to install is not absolute '%s'",I->File.c_str()); |
| 828 | Args[n++] = I->File.c_str(); |
| 829 | Size += strlen(Args[n-1]); |
| 830 | } |
| 831 | } |
| 832 | else |
| 833 | { |
| 834 | for (;I != J && Size < MaxArgBytes; I++) |
| 835 | { |
| 836 | if((*I).Pkg.end() == true) |
| 837 | continue; |
| 838 | Args[n++] = I->Pkg.Name(); |
| 839 | Size += strlen(Args[n-1]); |
| 840 | } |
| 841 | } |
| 842 | Args[n] = 0; |
| 843 | J = I; |
| 844 | |
| 845 | if (_config->FindB("Debug::pkgDPkgPM",false) == true) |
| 846 | { |
| 847 | for (unsigned int k = 0; k != n; k++) |
| 848 | clog << Args[k] << ' '; |
| 849 | clog << endl; |
| 850 | continue; |
| 851 | } |
| 852 | |
| 853 | cout << flush; |
| 854 | clog << flush; |
| 855 | cerr << flush; |
| 856 | |
| 857 | /* Mask off sig int/quit. We do this because dpkg also does when |
| 858 | it forks scripts. What happens is that when you hit ctrl-c it sends |
| 859 | it to all processes in the group. Since dpkg ignores the signal |
| 860 | it doesn't die but we do! So we must also ignore it */ |
| 861 | sighandler_t old_SIGQUIT = signal(SIGQUIT,SIG_IGN); |
| 862 | sighandler_t old_SIGINT = signal(SIGINT,SIG_IGN); |
| 863 | |
| 864 | // ignore SIGHUP as well (debian #463030) |
| 865 | sighandler_t old_SIGHUP = signal(SIGHUP,SIG_IGN); |
| 866 | |
| 867 | struct termios tt; |
| 868 | struct winsize win; |
| 869 | int master = -1; |
| 870 | int slave = -1; |
| 871 | |
| 872 | // if tcgetattr does not return zero there was a error |
| 873 | // and we do not do any pty magic |
| 874 | if (tcgetattr(0, &tt) == 0) |
| 875 | { |
| 876 | ioctl(0, TIOCGWINSZ, (char *)&win); |
| 877 | if (openpty(&master, &slave, NULL, &tt, &win) < 0) |
| 878 | { |
| 879 | const char *s = _("Can not write log, openpty() " |
| 880 | "failed (/dev/pts not mounted?)\n"); |
| 881 | fprintf(stderr, "%s",s); |
| 882 | fprintf(term_out, "%s",s); |
| 883 | master = slave = -1; |
| 884 | } else { |
| 885 | struct termios rtt; |
| 886 | rtt = tt; |
| 887 | cfmakeraw(&rtt); |
| 888 | rtt.c_lflag &= ~ECHO; |
| 889 | // block SIGTTOU during tcsetattr to prevent a hang if |
| 890 | // the process is a member of the background process group |
| 891 | // http://www.opengroup.org/onlinepubs/000095399/functions/tcsetattr.html |
| 892 | sigemptyset(&sigmask); |
| 893 | sigaddset(&sigmask, SIGTTOU); |
| 894 | sigprocmask(SIG_BLOCK,&sigmask, &original_sigmask); |
| 895 | tcsetattr(0, TCSAFLUSH, &rtt); |
| 896 | sigprocmask(SIG_SETMASK, &original_sigmask, 0); |
| 897 | } |
| 898 | } |
| 899 | |
| 900 | // Fork dpkg |
| 901 | pid_t Child; |
| 902 | _config->Set("APT::Keep-Fds::",fd[1]); |
| 903 | // send status information that we are about to fork dpkg |
| 904 | if(OutStatusFd > 0) { |
| 905 | ostringstream status; |
| 906 | status << "pmstatus:dpkg-exec:" |
| 907 | << (PackagesDone/float(PackagesTotal)*100.0) |
| 908 | << ":" << _("Running dpkg") |
| 909 | << endl; |
| 910 | write(OutStatusFd, status.str().c_str(), status.str().size()); |
| 911 | } |
| 912 | Child = ExecFork(); |
| 913 | |
| 914 | // This is the child |
| 915 | if (Child == 0) |
| 916 | { |
| 917 | if(slave >= 0 && master >= 0) |
| 918 | { |
| 919 | setsid(); |
| 920 | ioctl(slave, TIOCSCTTY, 0); |
| 921 | close(master); |
| 922 | dup2(slave, 0); |
| 923 | dup2(slave, 1); |
| 924 | dup2(slave, 2); |
| 925 | close(slave); |
| 926 | } |
| 927 | close(fd[0]); // close the read end of the pipe |
| 928 | |
| 929 | if (_config->FindDir("DPkg::Chroot-Directory","/") != "/") |
| 930 | { |
| 931 | std::cerr << "Chrooting into " |
| 932 | << _config->FindDir("DPkg::Chroot-Directory") |
| 933 | << std::endl; |
| 934 | if (chroot(_config->FindDir("DPkg::Chroot-Directory","/").c_str()) != 0) |
| 935 | _exit(100); |
| 936 | } |
| 937 | |
| 938 | if (chdir(_config->FindDir("DPkg::Run-Directory","/").c_str()) != 0) |
| 939 | _exit(100); |
| 940 | |
| 941 | if (_config->FindB("DPkg::FlushSTDIN",true) == true && isatty(STDIN_FILENO)) |
| 942 | { |
| 943 | int Flags,dummy; |
| 944 | if ((Flags = fcntl(STDIN_FILENO,F_GETFL,dummy)) < 0) |
| 945 | _exit(100); |
| 946 | |
| 947 | // Discard everything in stdin before forking dpkg |
| 948 | if (fcntl(STDIN_FILENO,F_SETFL,Flags | O_NONBLOCK) < 0) |
| 949 | _exit(100); |
| 950 | |
| 951 | while (read(STDIN_FILENO,&dummy,1) == 1); |
| 952 | |
| 953 | if (fcntl(STDIN_FILENO,F_SETFL,Flags & (~(long)O_NONBLOCK)) < 0) |
| 954 | _exit(100); |
| 955 | } |
| 956 | |
| 957 | /* No Job Control Stop Env is a magic dpkg var that prevents it |
| 958 | from using sigstop */ |
| 959 | putenv((char *)"DPKG_NO_TSTP=yes"); |
| 960 | execvp(Args[0],(char **)Args); |
| 961 | cerr << "Could not exec dpkg!" << endl; |
| 962 | _exit(100); |
| 963 | } |
| 964 | |
| 965 | // apply ionice |
| 966 | if (_config->FindB("DPkg::UseIoNice", false) == true) |
| 967 | ionice(Child); |
| 968 | |
| 969 | // clear the Keep-Fd again |
| 970 | _config->Clear("APT::Keep-Fds",fd[1]); |
| 971 | |
| 972 | // Wait for dpkg |
| 973 | int Status = 0; |
| 974 | |
| 975 | // we read from dpkg here |
| 976 | int const _dpkgin = fd[0]; |
| 977 | close(fd[1]); // close the write end of the pipe |
| 978 | |
| 979 | if(slave > 0) |
| 980 | close(slave); |
| 981 | |
| 982 | // setups fds |
| 983 | sigemptyset(&sigmask); |
| 984 | sigprocmask(SIG_BLOCK,&sigmask,&original_sigmask); |
| 985 | |
| 986 | // the result of the waitpid call |
| 987 | int res; |
| 988 | int select_ret; |
| 989 | while ((res=waitpid(Child,&Status, WNOHANG)) != Child) { |
| 990 | if(res < 0) { |
| 991 | // FIXME: move this to a function or something, looks ugly here |
| 992 | // error handling, waitpid returned -1 |
| 993 | if (errno == EINTR) |
| 994 | continue; |
| 995 | RunScripts("DPkg::Post-Invoke"); |
| 996 | |
| 997 | // Restore sig int/quit |
| 998 | signal(SIGQUIT,old_SIGQUIT); |
| 999 | signal(SIGINT,old_SIGINT); |
| 1000 | signal(SIGHUP,old_SIGHUP); |
| 1001 | return _error->Errno("waitpid","Couldn't wait for subprocess"); |
| 1002 | } |
| 1003 | |
| 1004 | // wait for input or output here |
| 1005 | FD_ZERO(&rfds); |
| 1006 | if (!stdin_is_dev_null) |
| 1007 | FD_SET(0, &rfds); |
| 1008 | FD_SET(_dpkgin, &rfds); |
| 1009 | if(master >= 0) |
| 1010 | FD_SET(master, &rfds); |
| 1011 | tv.tv_sec = 1; |
| 1012 | tv.tv_nsec = 0; |
| 1013 | select_ret = pselect(max(master, _dpkgin)+1, &rfds, NULL, NULL, |
| 1014 | &tv, &original_sigmask); |
| 1015 | if (select_ret < 0 && (errno == EINVAL || errno == ENOSYS)) |
| 1016 | select_ret = racy_pselect(max(master, _dpkgin)+1, &rfds, NULL, |
| 1017 | NULL, &tv, &original_sigmask); |
| 1018 | if (select_ret == 0) |
| 1019 | continue; |
| 1020 | else if (select_ret < 0 && errno == EINTR) |
| 1021 | continue; |
| 1022 | else if (select_ret < 0) |
| 1023 | { |
| 1024 | perror("select() returned error"); |
| 1025 | continue; |
| 1026 | } |
| 1027 | |
| 1028 | if(master >= 0 && FD_ISSET(master, &rfds)) |
| 1029 | DoTerminalPty(master); |
| 1030 | if(master >= 0 && FD_ISSET(0, &rfds)) |
| 1031 | DoStdin(master); |
| 1032 | if(FD_ISSET(_dpkgin, &rfds)) |
| 1033 | DoDpkgStatusFd(_dpkgin, OutStatusFd); |
| 1034 | } |
| 1035 | close(_dpkgin); |
| 1036 | |
| 1037 | // Restore sig int/quit |
| 1038 | signal(SIGQUIT,old_SIGQUIT); |
| 1039 | signal(SIGINT,old_SIGINT); |
| 1040 | signal(SIGHUP,old_SIGHUP); |
| 1041 | |
| 1042 | if(master >= 0) |
| 1043 | { |
| 1044 | tcsetattr(0, TCSAFLUSH, &tt); |
| 1045 | close(master); |
| 1046 | } |
| 1047 | |
| 1048 | // Check for an error code. |
| 1049 | if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0) |
| 1050 | { |
| 1051 | // if it was set to "keep-dpkg-runing" then we won't return |
| 1052 | // here but keep the loop going and just report it as a error |
| 1053 | // for later |
| 1054 | bool const stopOnError = _config->FindB("Dpkg::StopOnError",true); |
| 1055 | |
| 1056 | if(stopOnError) |
| 1057 | RunScripts("DPkg::Post-Invoke"); |
| 1058 | |
| 1059 | if (WIFSIGNALED(Status) != 0 && WTERMSIG(Status) == SIGSEGV) |
| 1060 | _error->Error("Sub-process %s received a segmentation fault.",Args[0]); |
| 1061 | else if (WIFEXITED(Status) != 0) |
| 1062 | _error->Error("Sub-process %s returned an error code (%u)",Args[0],WEXITSTATUS(Status)); |
| 1063 | else |
| 1064 | _error->Error("Sub-process %s exited unexpectedly",Args[0]); |
| 1065 | |
| 1066 | if(stopOnError) |
| 1067 | { |
| 1068 | CloseLog(); |
| 1069 | return false; |
| 1070 | } |
| 1071 | } |
| 1072 | } |
| 1073 | CloseLog(); |
| 1074 | |
| 1075 | if (RunScripts("DPkg::Post-Invoke") == false) |
| 1076 | return false; |
| 1077 | |
| 1078 | Cache.writeStateFile(NULL); |
| 1079 | return true; |
| 1080 | } |
| 1081 | /*}}}*/ |
| 1082 | // pkgDpkgPM::Reset - Dump the contents of the command list /*{{{*/ |
| 1083 | // --------------------------------------------------------------------- |
| 1084 | /* */ |
| 1085 | void pkgDPkgPM::Reset() |
| 1086 | { |
| 1087 | List.erase(List.begin(),List.end()); |
| 1088 | } |
| 1089 | /*}}}*/ |