| 1 | // -*- mode: cpp; mode: fold -*- |
| 2 | // Description /*{{{*/ |
| 3 | // $Id: acquire-item.cc,v 1.46.2.9 2004/01/16 18:51:11 mdz Exp $ |
| 4 | /* ###################################################################### |
| 5 | |
| 6 | Acquire Item - Item to acquire |
| 7 | |
| 8 | Each item can download to exactly one file at a time. This means you |
| 9 | cannot create an item that fetches two uri's to two files at the same |
| 10 | time. The pkgAcqIndex class creates a second class upon instantiation |
| 11 | to fetch the other index files because of this. |
| 12 | |
| 13 | ##################################################################### */ |
| 14 | /*}}}*/ |
| 15 | // Include Files /*{{{*/ |
| 16 | #ifdef __GNUG__ |
| 17 | #pragma implementation "apt-pkg/acquire-item.h" |
| 18 | #endif |
| 19 | #include <apt-pkg/acquire-item.h> |
| 20 | #include <apt-pkg/configuration.h> |
| 21 | #include <apt-pkg/sourcelist.h> |
| 22 | #include <apt-pkg/vendorlist.h> |
| 23 | #include <apt-pkg/error.h> |
| 24 | #include <apt-pkg/strutl.h> |
| 25 | #include <apt-pkg/fileutl.h> |
| 26 | #include <apt-pkg/md5.h> |
| 27 | #include <apt-pkg/sha1.h> |
| 28 | #include <apt-pkg/tagfile.h> |
| 29 | |
| 30 | #include <apti18n.h> |
| 31 | |
| 32 | #include <sys/stat.h> |
| 33 | #include <unistd.h> |
| 34 | #include <errno.h> |
| 35 | #include <string> |
| 36 | #include <sstream> |
| 37 | #include <stdio.h> |
| 38 | /*}}}*/ |
| 39 | |
| 40 | using namespace std; |
| 41 | |
| 42 | // Acquire::Item::Item - Constructor /*{{{*/ |
| 43 | // --------------------------------------------------------------------- |
| 44 | /* */ |
| 45 | pkgAcquire::Item::Item(pkgAcquire *Owner) : Owner(Owner), FileSize(0), |
| 46 | PartialSize(0), Mode(0), ID(0), Complete(false), |
| 47 | Local(false), QueueCounter(0) |
| 48 | { |
| 49 | Owner->Add(this); |
| 50 | Status = StatIdle; |
| 51 | } |
| 52 | /*}}}*/ |
| 53 | // Acquire::Item::~Item - Destructor /*{{{*/ |
| 54 | // --------------------------------------------------------------------- |
| 55 | /* */ |
| 56 | pkgAcquire::Item::~Item() |
| 57 | { |
| 58 | Owner->Remove(this); |
| 59 | } |
| 60 | /*}}}*/ |
| 61 | // Acquire::Item::Failed - Item failed to download /*{{{*/ |
| 62 | // --------------------------------------------------------------------- |
| 63 | /* We return to an idle state if there are still other queues that could |
| 64 | fetch this object */ |
| 65 | void pkgAcquire::Item::Failed(string Message,pkgAcquire::MethodConfig *Cnf) |
| 66 | { |
| 67 | Status = StatIdle; |
| 68 | ErrorText = LookupTag(Message,"Message"); |
| 69 | if (QueueCounter <= 1) |
| 70 | { |
| 71 | /* This indicates that the file is not available right now but might |
| 72 | be sometime later. If we do a retry cycle then this should be |
| 73 | retried [CDROMs] */ |
| 74 | if (Cnf->LocalOnly == true && |
| 75 | StringToBool(LookupTag(Message,"Transient-Failure"),false) == true) |
| 76 | { |
| 77 | Status = StatIdle; |
| 78 | Dequeue(); |
| 79 | return; |
| 80 | } |
| 81 | |
| 82 | Status = StatError; |
| 83 | Dequeue(); |
| 84 | } |
| 85 | } |
| 86 | /*}}}*/ |
| 87 | // Acquire::Item::Start - Item has begun to download /*{{{*/ |
| 88 | // --------------------------------------------------------------------- |
| 89 | /* Stash status and the file size. Note that setting Complete means |
| 90 | sub-phases of the acquire process such as decompresion are operating */ |
| 91 | void pkgAcquire::Item::Start(string /*Message*/,unsigned long Size) |
| 92 | { |
| 93 | Status = StatFetching; |
| 94 | if (FileSize == 0 && Complete == false) |
| 95 | FileSize = Size; |
| 96 | } |
| 97 | /*}}}*/ |
| 98 | // Acquire::Item::Done - Item downloaded OK /*{{{*/ |
| 99 | // --------------------------------------------------------------------- |
| 100 | /* */ |
| 101 | void pkgAcquire::Item::Done(string Message,unsigned long Size,string, |
| 102 | pkgAcquire::MethodConfig *Cnf) |
| 103 | { |
| 104 | // We just downloaded something.. |
| 105 | string FileName = LookupTag(Message,"Filename"); |
| 106 | // we only inform the Log class if it was actually not a local thing |
| 107 | if (Complete == false && !Local && FileName == DestFile) |
| 108 | { |
| 109 | if (Owner->Log != 0) |
| 110 | Owner->Log->Fetched(Size,atoi(LookupTag(Message,"Resume-Point","0").c_str())); |
| 111 | } |
| 112 | |
| 113 | if (FileSize == 0) |
| 114 | FileSize= Size; |
| 115 | |
| 116 | Status = StatDone; |
| 117 | ErrorText = string(); |
| 118 | Owner->Dequeue(this); |
| 119 | } |
| 120 | /*}}}*/ |
| 121 | // Acquire::Item::Rename - Rename a file /*{{{*/ |
| 122 | // --------------------------------------------------------------------- |
| 123 | /* This helper function is used by alot of item methods as thier final |
| 124 | step */ |
| 125 | void pkgAcquire::Item::Rename(string From,string To) |
| 126 | { |
| 127 | if (rename(From.c_str(),To.c_str()) != 0) |
| 128 | { |
| 129 | char S[300]; |
| 130 | snprintf(S,sizeof(S),_("rename failed, %s (%s -> %s)."),strerror(errno), |
| 131 | From.c_str(),To.c_str()); |
| 132 | Status = StatError; |
| 133 | ErrorText = S; |
| 134 | } |
| 135 | } |
| 136 | /*}}}*/ |
| 137 | |
| 138 | |
| 139 | // AcqDiffIndex::AcqDiffIndex - Constructor |
| 140 | // --------------------------------------------------------------------- |
| 141 | /* Get the DiffIndex file first and see if there are patches availabe |
| 142 | * If so, create a pkgAcqIndexDiffs fetcher that will get and apply the |
| 143 | * patches. If anything goes wrong in that process, it will fall back to |
| 144 | * the original packages file |
| 145 | */ |
| 146 | pkgAcqDiffIndex::pkgAcqDiffIndex(pkgAcquire *Owner, |
| 147 | string URI,string URIDesc,string ShortDesc, |
| 148 | string ExpectedMD5) |
| 149 | : Item(Owner), RealURI(URI), ExpectedMD5(ExpectedMD5), Description(URIDesc) |
| 150 | { |
| 151 | |
| 152 | Debug = _config->FindB("Debug::pkgAcquire::Diffs",false); |
| 153 | |
| 154 | Desc.Description = URIDesc + "/DiffIndex"; |
| 155 | Desc.Owner = this; |
| 156 | Desc.ShortDesc = ShortDesc; |
| 157 | Desc.URI = URI + ".diff/Index"; |
| 158 | |
| 159 | DestFile = _config->FindDir("Dir::State::lists") + "partial/"; |
| 160 | DestFile += URItoFileName(URI) + string(".DiffIndex"); |
| 161 | |
| 162 | if(Debug) |
| 163 | std::clog << "pkgAcqDiffIndex: " << Desc.URI << std::endl; |
| 164 | |
| 165 | // look for the current package file |
| 166 | CurrentPackagesFile = _config->FindDir("Dir::State::lists"); |
| 167 | CurrentPackagesFile += URItoFileName(RealURI); |
| 168 | |
| 169 | // FIXME: this file:/ check is a hack to prevent fetching |
| 170 | // from local sources. this is really silly, and |
| 171 | // should be fixed cleanly as soon as possible |
| 172 | if(!FileExists(CurrentPackagesFile) || |
| 173 | Desc.URI.substr(0,strlen("file:/")) == "file:/") |
| 174 | { |
| 175 | // we don't have a pkg file or we don't want to queue |
| 176 | if(Debug) |
| 177 | std::clog << "No index file, local or canceld by user" << std::endl; |
| 178 | Failed("", NULL); |
| 179 | return; |
| 180 | } |
| 181 | |
| 182 | if(Debug) |
| 183 | std::clog << "pkgAcqIndexDiffs::pkgAcqIndexDiffs(): " |
| 184 | << CurrentPackagesFile << std::endl; |
| 185 | |
| 186 | QueueURI(Desc); |
| 187 | |
| 188 | } |
| 189 | |
| 190 | // AcqIndex::Custom600Headers - Insert custom request headers /*{{{*/ |
| 191 | // --------------------------------------------------------------------- |
| 192 | /* The only header we use is the last-modified header. */ |
| 193 | string pkgAcqDiffIndex::Custom600Headers() |
| 194 | { |
| 195 | string Final = _config->FindDir("Dir::State::lists"); |
| 196 | Final += URItoFileName(RealURI) + string(".IndexDiff"); |
| 197 | |
| 198 | if(Debug) |
| 199 | std::clog << "Custom600Header-IMS: " << Final << std::endl; |
| 200 | |
| 201 | struct stat Buf; |
| 202 | if (stat(Final.c_str(),&Buf) != 0) |
| 203 | return "\nIndex-File: true"; |
| 204 | |
| 205 | return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); |
| 206 | } |
| 207 | |
| 208 | |
| 209 | bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile) |
| 210 | { |
| 211 | if(Debug) |
| 212 | std::clog << "pkgAcqIndexDiffs::ParseIndexDiff() " << IndexDiffFile |
| 213 | << std::endl; |
| 214 | |
| 215 | pkgTagSection Tags; |
| 216 | string ServerSha1; |
| 217 | vector<DiffInfo> available_patches; |
| 218 | |
| 219 | FileFd Fd(IndexDiffFile,FileFd::ReadOnly); |
| 220 | pkgTagFile TF(&Fd); |
| 221 | if (_error->PendingError() == true) |
| 222 | return false; |
| 223 | |
| 224 | if(TF.Step(Tags) == true) |
| 225 | { |
| 226 | string local_sha1; |
| 227 | bool found = false; |
| 228 | DiffInfo d; |
| 229 | string size; |
| 230 | |
| 231 | string tmp = Tags.FindS("SHA1-Current"); |
| 232 | std::stringstream ss(tmp); |
| 233 | ss >> ServerSha1; |
| 234 | |
| 235 | FileFd fd(CurrentPackagesFile, FileFd::ReadOnly); |
| 236 | SHA1Summation SHA1; |
| 237 | SHA1.AddFD(fd.Fd(), fd.Size()); |
| 238 | local_sha1 = string(SHA1.Result()); |
| 239 | |
| 240 | if(local_sha1 == ServerSha1) |
| 241 | { |
| 242 | // we have the same sha1 as the server |
| 243 | if(Debug) |
| 244 | std::clog << "Package file is up-to-date" << std::endl; |
| 245 | // set found to true, this will queue a pkgAcqIndexDiffs with |
| 246 | // a empty availabe_patches |
| 247 | found = true; |
| 248 | } |
| 249 | else |
| 250 | { |
| 251 | if(Debug) |
| 252 | std::clog << "SHA1-Current: " << ServerSha1 << std::endl; |
| 253 | |
| 254 | // check the historie and see what patches we need |
| 255 | string history = Tags.FindS("SHA1-History"); |
| 256 | std::stringstream hist(history); |
| 257 | while(hist >> d.sha1 >> size >> d.file) |
| 258 | { |
| 259 | d.size = atoi(size.c_str()); |
| 260 | // read until the first match is found |
| 261 | if(d.sha1 == local_sha1) |
| 262 | found=true; |
| 263 | // from that point on, we probably need all diffs |
| 264 | if(found) |
| 265 | { |
| 266 | if(Debug) |
| 267 | std::clog << "Need to get diff: " << d.file << std::endl; |
| 268 | available_patches.push_back(d); |
| 269 | } |
| 270 | } |
| 271 | } |
| 272 | |
| 273 | // no information how to get the patches, bail out |
| 274 | if(!found) |
| 275 | { |
| 276 | if(Debug) |
| 277 | std::clog << "Can't find a patch in the index file" << std::endl; |
| 278 | // Failed will queue a big package file |
| 279 | Failed("", NULL); |
| 280 | } |
| 281 | else |
| 282 | { |
| 283 | // queue the diffs |
| 284 | new pkgAcqIndexDiffs(Owner, RealURI, Description, Desc.ShortDesc, |
| 285 | ExpectedMD5, available_patches); |
| 286 | Complete = false; |
| 287 | Status = StatDone; |
| 288 | Dequeue(); |
| 289 | return true; |
| 290 | } |
| 291 | } |
| 292 | |
| 293 | return false; |
| 294 | } |
| 295 | |
| 296 | void pkgAcqDiffIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf) |
| 297 | { |
| 298 | if(Debug) |
| 299 | std::clog << "pkgAcqDiffIndex failed: " << Desc.URI << std::endl |
| 300 | << "Falling back to normal index file aquire" << std::endl; |
| 301 | |
| 302 | new pkgAcqIndex(Owner, RealURI, Description, Desc.ShortDesc, |
| 303 | ExpectedMD5); |
| 304 | |
| 305 | Complete = false; |
| 306 | Status = StatDone; |
| 307 | Dequeue(); |
| 308 | } |
| 309 | |
| 310 | void pkgAcqDiffIndex::Done(string Message,unsigned long Size,string Md5Hash, |
| 311 | pkgAcquire::MethodConfig *Cnf) |
| 312 | { |
| 313 | if(Debug) |
| 314 | std::clog << "pkgAcqDiffIndex::Done(): " << Desc.URI << std::endl; |
| 315 | |
| 316 | Item::Done(Message,Size,Md5Hash,Cnf); |
| 317 | |
| 318 | string FinalFile; |
| 319 | FinalFile = _config->FindDir("Dir::State::lists")+URItoFileName(RealURI); |
| 320 | |
| 321 | // sucess in downloading the index |
| 322 | // rename the index |
| 323 | FinalFile += string(".IndexDiff"); |
| 324 | if(Debug) |
| 325 | std::clog << "Renaming: " << DestFile << " -> " << FinalFile |
| 326 | << std::endl; |
| 327 | Rename(DestFile,FinalFile); |
| 328 | chmod(FinalFile.c_str(),0644); |
| 329 | DestFile = FinalFile; |
| 330 | |
| 331 | if(!ParseDiffIndex(DestFile)) |
| 332 | return Failed("", NULL); |
| 333 | |
| 334 | Complete = true; |
| 335 | Status = StatDone; |
| 336 | Dequeue(); |
| 337 | return; |
| 338 | } |
| 339 | |
| 340 | |
| 341 | |
| 342 | // AcqIndexDiffs::AcqIndexDiffs - Constructor |
| 343 | // --------------------------------------------------------------------- |
| 344 | /* The package diff is added to the queue. one object is constructed |
| 345 | * for each diff and the index |
| 346 | */ |
| 347 | pkgAcqIndexDiffs::pkgAcqIndexDiffs(pkgAcquire *Owner, |
| 348 | string URI,string URIDesc,string ShortDesc, |
| 349 | string ExpectedMD5, vector<DiffInfo> diffs) |
| 350 | : Item(Owner), RealURI(URI), ExpectedMD5(ExpectedMD5), |
| 351 | available_patches(diffs) |
| 352 | { |
| 353 | |
| 354 | DestFile = _config->FindDir("Dir::State::lists") + "partial/"; |
| 355 | DestFile += URItoFileName(URI); |
| 356 | |
| 357 | Debug = _config->FindB("Debug::pkgAcquire::Diffs",false); |
| 358 | |
| 359 | Desc.Description = URIDesc; |
| 360 | Desc.Owner = this; |
| 361 | Desc.ShortDesc = ShortDesc; |
| 362 | |
| 363 | if(available_patches.size() == 0) |
| 364 | { |
| 365 | // we are done (yeah!) |
| 366 | Finish(true); |
| 367 | } |
| 368 | else |
| 369 | { |
| 370 | // get the next diff |
| 371 | State = StateFetchDiff; |
| 372 | QueueNextDiff(); |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | |
| 377 | void pkgAcqIndexDiffs::Failed(string Message,pkgAcquire::MethodConfig *Cnf) |
| 378 | { |
| 379 | if(Debug) |
| 380 | std::clog << "pkgAcqIndexDiffs failed: " << Desc.URI << std::endl |
| 381 | << "Falling back to normal index file aquire" << std::endl; |
| 382 | new pkgAcqIndex(Owner, RealURI, Description,Desc.ShortDesc, |
| 383 | ExpectedMD5); |
| 384 | Finish(); |
| 385 | } |
| 386 | |
| 387 | |
| 388 | // helper that cleans the item out of the fetcher queue |
| 389 | void pkgAcqIndexDiffs::Finish(bool allDone) |
| 390 | { |
| 391 | // we restore the original name, this is required, otherwise |
| 392 | // the file will be cleaned |
| 393 | if(allDone) |
| 394 | { |
| 395 | DestFile = _config->FindDir("Dir::State::lists"); |
| 396 | DestFile += URItoFileName(RealURI); |
| 397 | |
| 398 | // do the final md5sum checking |
| 399 | MD5Summation sum; |
| 400 | FileFd Fd(DestFile, FileFd::ReadOnly); |
| 401 | sum.AddFD(Fd.Fd(), Fd.Size()); |
| 402 | Fd.Close(); |
| 403 | string MD5 = (string)sum.Result(); |
| 404 | |
| 405 | if (!ExpectedMD5.empty() && MD5 != ExpectedMD5) |
| 406 | { |
| 407 | Status = StatAuthError; |
| 408 | ErrorText = _("MD5Sum mismatch"); |
| 409 | Rename(DestFile,DestFile + ".FAILED"); |
| 410 | Dequeue(); |
| 411 | return; |
| 412 | } |
| 413 | |
| 414 | // this is for the "real" finish |
| 415 | Complete = true; |
| 416 | Status = StatDone; |
| 417 | Dequeue(); |
| 418 | if(Debug) |
| 419 | std::clog << "\n\nallDone: " << DestFile << "\n" << std::endl; |
| 420 | return; |
| 421 | } |
| 422 | |
| 423 | if(Debug) |
| 424 | std::clog << "Finishing: " << Desc.URI << std::endl; |
| 425 | Complete = false; |
| 426 | Status = StatDone; |
| 427 | Dequeue(); |
| 428 | return; |
| 429 | } |
| 430 | |
| 431 | |
| 432 | |
| 433 | bool pkgAcqIndexDiffs::QueueNextDiff() |
| 434 | { |
| 435 | |
| 436 | // calc sha1 of the just patched file |
| 437 | string FinalFile = _config->FindDir("Dir::State::lists"); |
| 438 | FinalFile += URItoFileName(RealURI); |
| 439 | |
| 440 | FileFd fd(FinalFile, FileFd::ReadOnly); |
| 441 | SHA1Summation SHA1; |
| 442 | SHA1.AddFD(fd.Fd(), fd.Size()); |
| 443 | string local_sha1 = string(SHA1.Result()); |
| 444 | if(Debug) |
| 445 | std::clog << "QueueNextDiff: " |
| 446 | << FinalFile << " (" << local_sha1 << ")"<<std::endl; |
| 447 | |
| 448 | // remove all patches until the next matching patch is found |
| 449 | // this requires the Index file to be ordered |
| 450 | for(vector<DiffInfo>::iterator I=available_patches.begin(); |
| 451 | available_patches.size() > 0 && |
| 452 | I != available_patches.end() && |
| 453 | (*I).sha1 != local_sha1; |
| 454 | I++) |
| 455 | { |
| 456 | available_patches.erase(I); |
| 457 | } |
| 458 | |
| 459 | // error checking and falling back if no patch was found |
| 460 | if(available_patches.size() == 0) |
| 461 | { |
| 462 | Failed("", NULL); |
| 463 | return false; |
| 464 | } |
| 465 | |
| 466 | // queue the right diff |
| 467 | Desc.URI = string(RealURI) + ".diff/" + available_patches[0].file + ".gz"; |
| 468 | Desc.Description = available_patches[0].file + string(".pdiff"); |
| 469 | |
| 470 | DestFile = _config->FindDir("Dir::State::lists") + "partial/"; |
| 471 | DestFile += URItoFileName(RealURI + ".diff/" + available_patches[0].file); |
| 472 | |
| 473 | if(Debug) |
| 474 | std::clog << "pkgAcqIndexDiffs::QueueNextDiff(): " << Desc.URI << std::endl; |
| 475 | |
| 476 | QueueURI(Desc); |
| 477 | |
| 478 | return true; |
| 479 | } |
| 480 | |
| 481 | |
| 482 | |
| 483 | void pkgAcqIndexDiffs::Done(string Message,unsigned long Size,string Md5Hash, |
| 484 | pkgAcquire::MethodConfig *Cnf) |
| 485 | { |
| 486 | if(Debug) |
| 487 | std::clog << "pkgAcqIndexDiffs::Done(): " << Desc.URI << std::endl; |
| 488 | |
| 489 | Item::Done(Message,Size,Md5Hash,Cnf); |
| 490 | |
| 491 | string FinalFile; |
| 492 | FinalFile = _config->FindDir("Dir::State::lists")+URItoFileName(RealURI); |
| 493 | |
| 494 | // sucess in downloading a diff, enter ApplyDiff state |
| 495 | if(State == StateFetchDiff) |
| 496 | { |
| 497 | |
| 498 | if(Debug) |
| 499 | std::clog << "Sending to gzip method: " << FinalFile << std::endl; |
| 500 | |
| 501 | string FileName = LookupTag(Message,"Filename"); |
| 502 | State = StateUnzipDiff; |
| 503 | Local = true; |
| 504 | Desc.URI = "gzip:" + FileName; |
| 505 | DestFile += ".decomp"; |
| 506 | QueueURI(Desc); |
| 507 | Mode = "gzip"; |
| 508 | return; |
| 509 | } |
| 510 | |
| 511 | // sucess in downloading a diff, enter ApplyDiff state |
| 512 | if(State == StateUnzipDiff) |
| 513 | { |
| 514 | |
| 515 | // rred excepts the patch as $FinalFile.ed |
| 516 | Rename(DestFile,FinalFile+".ed"); |
| 517 | |
| 518 | if(Debug) |
| 519 | std::clog << "Sending to rred method: " << FinalFile << std::endl; |
| 520 | |
| 521 | State = StateApplyDiff; |
| 522 | Local = true; |
| 523 | Desc.URI = "rred:" + FinalFile; |
| 524 | QueueURI(Desc); |
| 525 | Mode = "rred"; |
| 526 | return; |
| 527 | } |
| 528 | |
| 529 | |
| 530 | // success in download/apply a diff, queue next (if needed) |
| 531 | if(State == StateApplyDiff) |
| 532 | { |
| 533 | // remove the just applied patch |
| 534 | available_patches.erase(available_patches.begin()); |
| 535 | |
| 536 | // move into place |
| 537 | if(Debug) |
| 538 | { |
| 539 | std::clog << "Moving patched file in place: " << std::endl |
| 540 | << DestFile << " -> " << FinalFile << std::endl; |
| 541 | } |
| 542 | Rename(DestFile,FinalFile); |
| 543 | |
| 544 | // see if there is more to download |
| 545 | if(available_patches.size() > 0) { |
| 546 | new pkgAcqIndexDiffs(Owner, RealURI, Description, Desc.ShortDesc, |
| 547 | ExpectedMD5, available_patches); |
| 548 | return Finish(); |
| 549 | } else |
| 550 | return Finish(true); |
| 551 | } |
| 552 | } |
| 553 | |
| 554 | |
| 555 | // AcqIndex::AcqIndex - Constructor /*{{{*/ |
| 556 | // --------------------------------------------------------------------- |
| 557 | /* The package file is added to the queue and a second class is |
| 558 | instantiated to fetch the revision file */ |
| 559 | pkgAcqIndex::pkgAcqIndex(pkgAcquire *Owner, |
| 560 | string URI,string URIDesc,string ShortDesc, |
| 561 | string ExpectedMD5, string comprExt) |
| 562 | : Item(Owner), RealURI(URI), ExpectedMD5(ExpectedMD5) |
| 563 | { |
| 564 | Decompression = false; |
| 565 | Erase = false; |
| 566 | |
| 567 | DestFile = _config->FindDir("Dir::State::lists") + "partial/"; |
| 568 | DestFile += URItoFileName(URI); |
| 569 | |
| 570 | if(comprExt.empty()) |
| 571 | { |
| 572 | // autoselect the compression method |
| 573 | if(FileExists("/usr/bin/bzip2")) |
| 574 | CompressionExtension = ".bz2"; |
| 575 | else |
| 576 | CompressionExtension = ".gz"; |
| 577 | } else { |
| 578 | CompressionExtension = comprExt; |
| 579 | } |
| 580 | Desc.URI = URI + CompressionExtension; |
| 581 | |
| 582 | Desc.Description = URIDesc; |
| 583 | Desc.Owner = this; |
| 584 | Desc.ShortDesc = ShortDesc; |
| 585 | |
| 586 | QueueURI(Desc); |
| 587 | } |
| 588 | /*}}}*/ |
| 589 | // AcqIndex::Custom600Headers - Insert custom request headers /*{{{*/ |
| 590 | // --------------------------------------------------------------------- |
| 591 | /* The only header we use is the last-modified header. */ |
| 592 | string pkgAcqIndex::Custom600Headers() |
| 593 | { |
| 594 | string Final = _config->FindDir("Dir::State::lists"); |
| 595 | Final += URItoFileName(RealURI); |
| 596 | |
| 597 | struct stat Buf; |
| 598 | if (stat(Final.c_str(),&Buf) != 0) |
| 599 | return "\nIndex-File: true"; |
| 600 | |
| 601 | return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); |
| 602 | } |
| 603 | /*}}}*/ |
| 604 | |
| 605 | void pkgAcqIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf) |
| 606 | { |
| 607 | // no .bz2 found, retry with .gz |
| 608 | if(Desc.URI.substr(Desc.URI.size()-3,Desc.URI.size()-1) == "bz2") { |
| 609 | Desc.URI = Desc.URI.substr(0,Desc.URI.size()-3) + "gz"; |
| 610 | |
| 611 | // retry with a gzip one |
| 612 | new pkgAcqIndex(Owner, RealURI, Desc.Description,Desc.ShortDesc, |
| 613 | ExpectedMD5, string(".gz")); |
| 614 | Status = StatDone; |
| 615 | Complete = false; |
| 616 | Dequeue(); |
| 617 | return; |
| 618 | } |
| 619 | |
| 620 | |
| 621 | Item::Failed(Message,Cnf); |
| 622 | } |
| 623 | |
| 624 | |
| 625 | // AcqIndex::Done - Finished a fetch /*{{{*/ |
| 626 | // --------------------------------------------------------------------- |
| 627 | /* This goes through a number of states.. On the initial fetch the |
| 628 | method could possibly return an alternate filename which points |
| 629 | to the uncompressed version of the file. If this is so the file |
| 630 | is copied into the partial directory. In all other cases the file |
| 631 | is decompressed with a gzip uri. */ |
| 632 | void pkgAcqIndex::Done(string Message,unsigned long Size,string MD5, |
| 633 | pkgAcquire::MethodConfig *Cfg) |
| 634 | { |
| 635 | Item::Done(Message,Size,MD5,Cfg); |
| 636 | |
| 637 | if (Decompression == true) |
| 638 | { |
| 639 | if (_config->FindB("Debug::pkgAcquire::Auth", false)) |
| 640 | { |
| 641 | std::cerr << std::endl << RealURI << ": Computed MD5: " << MD5; |
| 642 | std::cerr << " Expected MD5: " << ExpectedMD5 << std::endl; |
| 643 | } |
| 644 | |
| 645 | if (MD5.empty()) |
| 646 | { |
| 647 | MD5Summation sum; |
| 648 | FileFd Fd(DestFile, FileFd::ReadOnly); |
| 649 | sum.AddFD(Fd.Fd(), Fd.Size()); |
| 650 | Fd.Close(); |
| 651 | MD5 = (string)sum.Result(); |
| 652 | } |
| 653 | |
| 654 | if (!ExpectedMD5.empty() && MD5 != ExpectedMD5) |
| 655 | { |
| 656 | Status = StatAuthError; |
| 657 | ErrorText = _("MD5Sum mismatch"); |
| 658 | Rename(DestFile,DestFile + ".FAILED"); |
| 659 | return; |
| 660 | } |
| 661 | // Done, move it into position |
| 662 | string FinalFile = _config->FindDir("Dir::State::lists"); |
| 663 | FinalFile += URItoFileName(RealURI); |
| 664 | Rename(DestFile,FinalFile); |
| 665 | chmod(FinalFile.c_str(),0644); |
| 666 | |
| 667 | /* We restore the original name to DestFile so that the clean operation |
| 668 | will work OK */ |
| 669 | DestFile = _config->FindDir("Dir::State::lists") + "partial/"; |
| 670 | DestFile += URItoFileName(RealURI); |
| 671 | |
| 672 | // Remove the compressed version. |
| 673 | if (Erase == true) |
| 674 | unlink(DestFile.c_str()); |
| 675 | return; |
| 676 | } |
| 677 | |
| 678 | Erase = false; |
| 679 | Complete = true; |
| 680 | |
| 681 | // Handle the unzipd case |
| 682 | string FileName = LookupTag(Message,"Alt-Filename"); |
| 683 | if (FileName.empty() == false) |
| 684 | { |
| 685 | // The files timestamp matches |
| 686 | if (StringToBool(LookupTag(Message,"Alt-IMS-Hit"),false) == true) |
| 687 | return; |
| 688 | |
| 689 | Decompression = true; |
| 690 | Local = true; |
| 691 | DestFile += ".decomp"; |
| 692 | Desc.URI = "copy:" + FileName; |
| 693 | QueueURI(Desc); |
| 694 | Mode = "copy"; |
| 695 | return; |
| 696 | } |
| 697 | |
| 698 | FileName = LookupTag(Message,"Filename"); |
| 699 | if (FileName.empty() == true) |
| 700 | { |
| 701 | Status = StatError; |
| 702 | ErrorText = "Method gave a blank filename"; |
| 703 | } |
| 704 | |
| 705 | // The files timestamp matches |
| 706 | if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == true) |
| 707 | return; |
| 708 | |
| 709 | if (FileName == DestFile) |
| 710 | Erase = true; |
| 711 | else |
| 712 | Local = true; |
| 713 | |
| 714 | string compExt = Desc.URI.substr(Desc.URI.size()-3,Desc.URI.size()-1); |
| 715 | char *decompProg; |
| 716 | if(compExt == "bz2") |
| 717 | decompProg = "bzip2"; |
| 718 | else if(compExt == ".gz") |
| 719 | decompProg = "gzip"; |
| 720 | else { |
| 721 | _error->Error("Unsupported extension: %s", compExt.c_str()); |
| 722 | return; |
| 723 | } |
| 724 | |
| 725 | Decompression = true; |
| 726 | DestFile += ".decomp"; |
| 727 | Desc.URI = string(decompProg) + ":" + FileName; |
| 728 | QueueURI(Desc); |
| 729 | Mode = decompProg; |
| 730 | } |
| 731 | |
| 732 | pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire *Owner, |
| 733 | string URI,string URIDesc,string ShortDesc, |
| 734 | string MetaIndexURI, string MetaIndexURIDesc, |
| 735 | string MetaIndexShortDesc, |
| 736 | const vector<IndexTarget*>* IndexTargets, |
| 737 | indexRecords* MetaIndexParser) : |
| 738 | Item(Owner), RealURI(URI), MetaIndexURI(MetaIndexURI), |
| 739 | MetaIndexURIDesc(MetaIndexURIDesc), MetaIndexShortDesc(MetaIndexShortDesc) |
| 740 | { |
| 741 | this->MetaIndexParser = MetaIndexParser; |
| 742 | this->IndexTargets = IndexTargets; |
| 743 | DestFile = _config->FindDir("Dir::State::lists") + "partial/"; |
| 744 | DestFile += URItoFileName(URI); |
| 745 | |
| 746 | // remove any partial downloaded sig-file. it may confuse proxies |
| 747 | // and is too small to warrant a partial download anyway |
| 748 | unlink(DestFile.c_str()); |
| 749 | |
| 750 | // Create the item |
| 751 | Desc.Description = URIDesc; |
| 752 | Desc.Owner = this; |
| 753 | Desc.ShortDesc = ShortDesc; |
| 754 | Desc.URI = URI; |
| 755 | |
| 756 | |
| 757 | string Final = _config->FindDir("Dir::State::lists"); |
| 758 | Final += URItoFileName(RealURI); |
| 759 | struct stat Buf; |
| 760 | if (stat(Final.c_str(),&Buf) == 0) |
| 761 | { |
| 762 | // File was already in place. It needs to be re-verified |
| 763 | // because Release might have changed, so Move it into partial |
| 764 | Rename(Final,DestFile); |
| 765 | // unlink the file and do not try to use I-M-S and Last-Modified |
| 766 | // if the users proxy is broken |
| 767 | if(_config->FindB("Acquire::BrokenProxy", false) == true) { |
| 768 | std::cerr << "forcing re-get of the signature file as requested" << std::endl; |
| 769 | unlink(DestFile.c_str()); |
| 770 | } |
| 771 | } |
| 772 | |
| 773 | QueueURI(Desc); |
| 774 | } |
| 775 | /*}}}*/ |
| 776 | // pkgAcqMetaSig::Custom600Headers - Insert custom request headers /*{{{*/ |
| 777 | // --------------------------------------------------------------------- |
| 778 | /* The only header we use is the last-modified header. */ |
| 779 | string pkgAcqMetaSig::Custom600Headers() |
| 780 | { |
| 781 | struct stat Buf; |
| 782 | if (stat(DestFile.c_str(),&Buf) != 0) |
| 783 | return "\nIndex-File: true"; |
| 784 | |
| 785 | return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); |
| 786 | } |
| 787 | |
| 788 | void pkgAcqMetaSig::Done(string Message,unsigned long Size,string MD5, |
| 789 | pkgAcquire::MethodConfig *Cfg) |
| 790 | { |
| 791 | Item::Done(Message,Size,MD5,Cfg); |
| 792 | |
| 793 | string FileName = LookupTag(Message,"Filename"); |
| 794 | if (FileName.empty() == true) |
| 795 | { |
| 796 | Status = StatError; |
| 797 | ErrorText = "Method gave a blank filename"; |
| 798 | return; |
| 799 | } |
| 800 | |
| 801 | if (FileName != DestFile) |
| 802 | { |
| 803 | // We have to copy it into place |
| 804 | Local = true; |
| 805 | Desc.URI = "copy:" + FileName; |
| 806 | QueueURI(Desc); |
| 807 | return; |
| 808 | } |
| 809 | |
| 810 | Complete = true; |
| 811 | |
| 812 | // queue a pkgAcqMetaIndex to be verified against the sig we just retrieved |
| 813 | new pkgAcqMetaIndex(Owner, MetaIndexURI, MetaIndexURIDesc, MetaIndexShortDesc, |
| 814 | DestFile, IndexTargets, MetaIndexParser); |
| 815 | |
| 816 | } |
| 817 | /*}}}*/ |
| 818 | void pkgAcqMetaSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf) |
| 819 | { |
| 820 | // Delete any existing sigfile, so that this source isn't |
| 821 | // mistakenly trusted |
| 822 | string Final = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI); |
| 823 | unlink(Final.c_str()); |
| 824 | |
| 825 | // if we get a timeout if fail |
| 826 | if(LookupTag(Message,"FailReason") == "Timeout" || |
| 827 | LookupTag(Message,"FailReason") == "TmpResolveFailure") { |
| 828 | Item::Failed(Message,Cnf); |
| 829 | return; |
| 830 | } |
| 831 | |
| 832 | // queue a pkgAcqMetaIndex with no sigfile |
| 833 | new pkgAcqMetaIndex(Owner, MetaIndexURI, MetaIndexURIDesc, MetaIndexShortDesc, |
| 834 | "", IndexTargets, MetaIndexParser); |
| 835 | |
| 836 | if (Cnf->LocalOnly == true || |
| 837 | StringToBool(LookupTag(Message,"Transient-Failure"),false) == false) |
| 838 | { |
| 839 | // Ignore this |
| 840 | Status = StatDone; |
| 841 | Complete = false; |
| 842 | Dequeue(); |
| 843 | return; |
| 844 | } |
| 845 | |
| 846 | Item::Failed(Message,Cnf); |
| 847 | } |
| 848 | |
| 849 | pkgAcqMetaIndex::pkgAcqMetaIndex(pkgAcquire *Owner, |
| 850 | string URI,string URIDesc,string ShortDesc, |
| 851 | string SigFile, |
| 852 | const vector<struct IndexTarget*>* IndexTargets, |
| 853 | indexRecords* MetaIndexParser) : |
| 854 | Item(Owner), RealURI(URI), SigFile(SigFile) |
| 855 | { |
| 856 | this->AuthPass = false; |
| 857 | this->MetaIndexParser = MetaIndexParser; |
| 858 | this->IndexTargets = IndexTargets; |
| 859 | DestFile = _config->FindDir("Dir::State::lists") + "partial/"; |
| 860 | DestFile += URItoFileName(URI); |
| 861 | |
| 862 | // Create the item |
| 863 | Desc.Description = URIDesc; |
| 864 | Desc.Owner = this; |
| 865 | Desc.ShortDesc = ShortDesc; |
| 866 | Desc.URI = URI; |
| 867 | |
| 868 | QueueURI(Desc); |
| 869 | } |
| 870 | |
| 871 | /*}}}*/ |
| 872 | // pkgAcqMetaIndex::Custom600Headers - Insert custom request headers /*{{{*/ |
| 873 | // --------------------------------------------------------------------- |
| 874 | /* The only header we use is the last-modified header. */ |
| 875 | string pkgAcqMetaIndex::Custom600Headers() |
| 876 | { |
| 877 | string Final = _config->FindDir("Dir::State::lists"); |
| 878 | Final += URItoFileName(RealURI); |
| 879 | |
| 880 | struct stat Buf; |
| 881 | if (stat(Final.c_str(),&Buf) != 0) |
| 882 | return "\nIndex-File: true"; |
| 883 | |
| 884 | return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); |
| 885 | } |
| 886 | |
| 887 | void pkgAcqMetaIndex::Done(string Message,unsigned long Size,string MD5, |
| 888 | pkgAcquire::MethodConfig *Cfg) |
| 889 | { |
| 890 | Item::Done(Message,Size,MD5,Cfg); |
| 891 | |
| 892 | // MetaIndexes are done in two passes: one to download the |
| 893 | // metaindex with an appropriate method, and a second to verify it |
| 894 | // with the gpgv method |
| 895 | |
| 896 | if (AuthPass == true) |
| 897 | { |
| 898 | AuthDone(Message); |
| 899 | } |
| 900 | else |
| 901 | { |
| 902 | RetrievalDone(Message); |
| 903 | if (!Complete) |
| 904 | // Still more retrieving to do |
| 905 | return; |
| 906 | |
| 907 | if (SigFile == "") |
| 908 | { |
| 909 | // There was no signature file, so we are finished. Download |
| 910 | // the indexes without verification. |
| 911 | QueueIndexes(false); |
| 912 | } |
| 913 | else |
| 914 | { |
| 915 | // There was a signature file, so pass it to gpgv for |
| 916 | // verification |
| 917 | |
| 918 | if (_config->FindB("Debug::pkgAcquire::Auth", false)) |
| 919 | std::cerr << "Metaindex acquired, queueing gpg verification (" |
| 920 | << SigFile << "," << DestFile << ")\n"; |
| 921 | AuthPass = true; |
| 922 | Desc.URI = "gpgv:" + SigFile; |
| 923 | QueueURI(Desc); |
| 924 | Mode = "gpgv"; |
| 925 | } |
| 926 | } |
| 927 | } |
| 928 | |
| 929 | void pkgAcqMetaIndex::RetrievalDone(string Message) |
| 930 | { |
| 931 | // We have just finished downloading a Release file (it is not |
| 932 | // verified yet) |
| 933 | |
| 934 | string FileName = LookupTag(Message,"Filename"); |
| 935 | if (FileName.empty() == true) |
| 936 | { |
| 937 | Status = StatError; |
| 938 | ErrorText = "Method gave a blank filename"; |
| 939 | return; |
| 940 | } |
| 941 | |
| 942 | if (FileName != DestFile) |
| 943 | { |
| 944 | Local = true; |
| 945 | Desc.URI = "copy:" + FileName; |
| 946 | QueueURI(Desc); |
| 947 | return; |
| 948 | } |
| 949 | |
| 950 | Complete = true; |
| 951 | |
| 952 | string FinalFile = _config->FindDir("Dir::State::lists"); |
| 953 | FinalFile += URItoFileName(RealURI); |
| 954 | |
| 955 | // The files timestamp matches |
| 956 | if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == false) |
| 957 | { |
| 958 | // Move it into position |
| 959 | Rename(DestFile,FinalFile); |
| 960 | } |
| 961 | DestFile = FinalFile; |
| 962 | } |
| 963 | |
| 964 | void pkgAcqMetaIndex::AuthDone(string Message) |
| 965 | { |
| 966 | // At this point, the gpgv method has succeeded, so there is a |
| 967 | // valid signature from a key in the trusted keyring. We |
| 968 | // perform additional verification of its contents, and use them |
| 969 | // to verify the indexes we are about to download |
| 970 | |
| 971 | if (!MetaIndexParser->Load(DestFile)) |
| 972 | { |
| 973 | Status = StatAuthError; |
| 974 | ErrorText = MetaIndexParser->ErrorText; |
| 975 | return; |
| 976 | } |
| 977 | |
| 978 | if (!VerifyVendor()) |
| 979 | { |
| 980 | return; |
| 981 | } |
| 982 | |
| 983 | if (_config->FindB("Debug::pkgAcquire::Auth", false)) |
| 984 | std::cerr << "Signature verification succeeded: " |
| 985 | << DestFile << std::endl; |
| 986 | |
| 987 | // Download further indexes with verification |
| 988 | QueueIndexes(true); |
| 989 | |
| 990 | // Done, move signature file into position |
| 991 | |
| 992 | string VerifiedSigFile = _config->FindDir("Dir::State::lists") + |
| 993 | URItoFileName(RealURI) + ".gpg"; |
| 994 | Rename(SigFile,VerifiedSigFile); |
| 995 | chmod(VerifiedSigFile.c_str(),0644); |
| 996 | } |
| 997 | |
| 998 | void pkgAcqMetaIndex::QueueIndexes(bool verify) |
| 999 | { |
| 1000 | for (vector <struct IndexTarget*>::const_iterator Target = IndexTargets->begin(); |
| 1001 | Target != IndexTargets->end(); |
| 1002 | Target++) |
| 1003 | { |
| 1004 | string ExpectedIndexMD5; |
| 1005 | if (verify) |
| 1006 | { |
| 1007 | const indexRecords::checkSum *Record = MetaIndexParser->Lookup((*Target)->MetaKey); |
| 1008 | if (!Record) |
| 1009 | { |
| 1010 | Status = StatAuthError; |
| 1011 | ErrorText = "Unable to find expected entry " |
| 1012 | + (*Target)->MetaKey + " in Meta-index file (malformed Release file?)"; |
| 1013 | return; |
| 1014 | } |
| 1015 | ExpectedIndexMD5 = Record->MD5Hash; |
| 1016 | if (_config->FindB("Debug::pkgAcquire::Auth", false)) |
| 1017 | { |
| 1018 | std::cerr << "Queueing: " << (*Target)->URI << std::endl; |
| 1019 | std::cerr << "Expected MD5: " << ExpectedIndexMD5 << std::endl; |
| 1020 | } |
| 1021 | if (ExpectedIndexMD5.empty()) |
| 1022 | { |
| 1023 | Status = StatAuthError; |
| 1024 | ErrorText = "Unable to find MD5 sum for " |
| 1025 | + (*Target)->MetaKey + " in Meta-index file"; |
| 1026 | return; |
| 1027 | } |
| 1028 | } |
| 1029 | |
| 1030 | // Queue Packages file (either diff or full packages files, depending |
| 1031 | // on the users option) |
| 1032 | if(_config->FindB("Acquire::PDiffs",true) == true) |
| 1033 | new pkgAcqDiffIndex(Owner, (*Target)->URI, (*Target)->Description, |
| 1034 | (*Target)->ShortDesc, ExpectedIndexMD5); |
| 1035 | else |
| 1036 | new pkgAcqIndex(Owner, (*Target)->URI, (*Target)->Description, |
| 1037 | (*Target)->ShortDesc, ExpectedIndexMD5); |
| 1038 | } |
| 1039 | } |
| 1040 | |
| 1041 | bool pkgAcqMetaIndex::VerifyVendor() |
| 1042 | { |
| 1043 | // // Maybe this should be made available from above so we don't have |
| 1044 | // // to read and parse it every time? |
| 1045 | // pkgVendorList List; |
| 1046 | // List.ReadMainList(); |
| 1047 | |
| 1048 | // const Vendor* Vndr = NULL; |
| 1049 | // for (std::vector<string>::const_iterator I = GPGVOutput.begin(); I != GPGVOutput.end(); I++) |
| 1050 | // { |
| 1051 | // string::size_type pos = (*I).find("VALIDSIG "); |
| 1052 | // if (_config->FindB("Debug::Vendor", false)) |
| 1053 | // std::cerr << "Looking for VALIDSIG in \"" << (*I) << "\": pos " << pos |
| 1054 | // << std::endl; |
| 1055 | // if (pos != std::string::npos) |
| 1056 | // { |
| 1057 | // string Fingerprint = (*I).substr(pos+sizeof("VALIDSIG")); |
| 1058 | // if (_config->FindB("Debug::Vendor", false)) |
| 1059 | // std::cerr << "Looking for \"" << Fingerprint << "\" in vendor..." << |
| 1060 | // std::endl; |
| 1061 | // Vndr = List.FindVendor(Fingerprint) != ""; |
| 1062 | // if (Vndr != NULL); |
| 1063 | // break; |
| 1064 | // } |
| 1065 | // } |
| 1066 | |
| 1067 | string Transformed = MetaIndexParser->GetExpectedDist(); |
| 1068 | |
| 1069 | if (Transformed == "../project/experimental") |
| 1070 | { |
| 1071 | Transformed = "experimental"; |
| 1072 | } |
| 1073 | |
| 1074 | string::size_type pos = Transformed.rfind('/'); |
| 1075 | if (pos != string::npos) |
| 1076 | { |
| 1077 | Transformed = Transformed.substr(0, pos); |
| 1078 | } |
| 1079 | |
| 1080 | if (Transformed == ".") |
| 1081 | { |
| 1082 | Transformed = ""; |
| 1083 | } |
| 1084 | |
| 1085 | if (_config->FindB("Debug::pkgAcquire::Auth", false)) |
| 1086 | { |
| 1087 | std::cerr << "Got Codename: " << MetaIndexParser->GetDist() << std::endl; |
| 1088 | std::cerr << "Expecting Dist: " << MetaIndexParser->GetExpectedDist() << std::endl; |
| 1089 | std::cerr << "Transformed Dist: " << Transformed << std::endl; |
| 1090 | } |
| 1091 | |
| 1092 | if (MetaIndexParser->CheckDist(Transformed) == false) |
| 1093 | { |
| 1094 | // This might become fatal one day |
| 1095 | // Status = StatAuthError; |
| 1096 | // ErrorText = "Conflicting distribution; expected " |
| 1097 | // + MetaIndexParser->GetExpectedDist() + " but got " |
| 1098 | // + MetaIndexParser->GetDist(); |
| 1099 | // return false; |
| 1100 | if (!Transformed.empty()) |
| 1101 | { |
| 1102 | _error->Warning("Conflicting distribution: %s (expected %s but got %s)", |
| 1103 | Desc.Description.c_str(), |
| 1104 | Transformed.c_str(), |
| 1105 | MetaIndexParser->GetDist().c_str()); |
| 1106 | } |
| 1107 | } |
| 1108 | |
| 1109 | return true; |
| 1110 | } |
| 1111 | /*}}}*/ |
| 1112 | // pkgAcqMetaIndex::Failed - no Release file present or no signature |
| 1113 | // file present /*{{{*/ |
| 1114 | // --------------------------------------------------------------------- |
| 1115 | /* */ |
| 1116 | void pkgAcqMetaIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf) |
| 1117 | { |
| 1118 | if (AuthPass == true) |
| 1119 | { |
| 1120 | // gpgv method failed |
| 1121 | _error->Warning("GPG error: %s: %s", |
| 1122 | Desc.Description.c_str(), |
| 1123 | LookupTag(Message,"Message").c_str()); |
| 1124 | } |
| 1125 | |
| 1126 | // No Release file was present, or verification failed, so fall |
| 1127 | // back to queueing Packages files without verification |
| 1128 | QueueIndexes(false); |
| 1129 | } |
| 1130 | |
| 1131 | /*}}}*/ |
| 1132 | |
| 1133 | // AcqArchive::AcqArchive - Constructor /*{{{*/ |
| 1134 | // --------------------------------------------------------------------- |
| 1135 | /* This just sets up the initial fetch environment and queues the first |
| 1136 | possibilitiy */ |
| 1137 | pkgAcqArchive::pkgAcqArchive(pkgAcquire *Owner,pkgSourceList *Sources, |
| 1138 | pkgRecords *Recs,pkgCache::VerIterator const &Version, |
| 1139 | string &StoreFilename) : |
| 1140 | Item(Owner), Version(Version), Sources(Sources), Recs(Recs), |
| 1141 | StoreFilename(StoreFilename), Vf(Version.FileList()), |
| 1142 | Trusted(false) |
| 1143 | { |
| 1144 | Retries = _config->FindI("Acquire::Retries",0); |
| 1145 | |
| 1146 | if (Version.Arch() == 0) |
| 1147 | { |
| 1148 | _error->Error(_("I wasn't able to locate a file for the %s package. " |
| 1149 | "This might mean you need to manually fix this package. " |
| 1150 | "(due to missing arch)"), |
| 1151 | Version.ParentPkg().Name()); |
| 1152 | return; |
| 1153 | } |
| 1154 | |
| 1155 | /* We need to find a filename to determine the extension. We make the |
| 1156 | assumption here that all the available sources for this version share |
| 1157 | the same extension.. */ |
| 1158 | // Skip not source sources, they do not have file fields. |
| 1159 | for (; Vf.end() == false; Vf++) |
| 1160 | { |
| 1161 | if ((Vf.File()->Flags & pkgCache::Flag::NotSource) != 0) |
| 1162 | continue; |
| 1163 | break; |
| 1164 | } |
| 1165 | |
| 1166 | // Does not really matter here.. we are going to fail out below |
| 1167 | if (Vf.end() != true) |
| 1168 | { |
| 1169 | // If this fails to get a file name we will bomb out below. |
| 1170 | pkgRecords::Parser &Parse = Recs->Lookup(Vf); |
| 1171 | if (_error->PendingError() == true) |
| 1172 | return; |
| 1173 | |
| 1174 | // Generate the final file name as: package_version_arch.foo |
| 1175 | StoreFilename = QuoteString(Version.ParentPkg().Name(),"_:") + '_' + |
| 1176 | QuoteString(Version.VerStr(),"_:") + '_' + |
| 1177 | QuoteString(Version.Arch(),"_:.") + |
| 1178 | "." + flExtension(Parse.FileName()); |
| 1179 | } |
| 1180 | |
| 1181 | // check if we have one trusted source for the package. if so, switch |
| 1182 | // to "TrustedOnly" mode |
| 1183 | for (pkgCache::VerFileIterator i = Version.FileList(); i.end() == false; i++) |
| 1184 | { |
| 1185 | pkgIndexFile *Index; |
| 1186 | if (Sources->FindIndex(i.File(),Index) == false) |
| 1187 | continue; |
| 1188 | if (_config->FindB("Debug::pkgAcquire::Auth", false)) |
| 1189 | { |
| 1190 | std::cerr << "Checking index: " << Index->Describe() |
| 1191 | << "(Trusted=" << Index->IsTrusted() << ")\n"; |
| 1192 | } |
| 1193 | if (Index->IsTrusted()) { |
| 1194 | Trusted = true; |
| 1195 | break; |
| 1196 | } |
| 1197 | } |
| 1198 | |
| 1199 | // Select a source |
| 1200 | if (QueueNext() == false && _error->PendingError() == false) |
| 1201 | _error->Error(_("I wasn't able to locate file for the %s package. " |
| 1202 | "This might mean you need to manually fix this package."), |
| 1203 | Version.ParentPkg().Name()); |
| 1204 | } |
| 1205 | /*}}}*/ |
| 1206 | // AcqArchive::QueueNext - Queue the next file source /*{{{*/ |
| 1207 | // --------------------------------------------------------------------- |
| 1208 | /* This queues the next available file version for download. It checks if |
| 1209 | the archive is already available in the cache and stashs the MD5 for |
| 1210 | checking later. */ |
| 1211 | bool pkgAcqArchive::QueueNext() |
| 1212 | { |
| 1213 | for (; Vf.end() == false; Vf++) |
| 1214 | { |
| 1215 | // Ignore not source sources |
| 1216 | if ((Vf.File()->Flags & pkgCache::Flag::NotSource) != 0) |
| 1217 | continue; |
| 1218 | |
| 1219 | // Try to cross match against the source list |
| 1220 | pkgIndexFile *Index; |
| 1221 | if (Sources->FindIndex(Vf.File(),Index) == false) |
| 1222 | continue; |
| 1223 | |
| 1224 | // only try to get a trusted package from another source if that source |
| 1225 | // is also trusted |
| 1226 | if(Trusted && !Index->IsTrusted()) |
| 1227 | continue; |
| 1228 | |
| 1229 | // Grab the text package record |
| 1230 | pkgRecords::Parser &Parse = Recs->Lookup(Vf); |
| 1231 | if (_error->PendingError() == true) |
| 1232 | return false; |
| 1233 | |
| 1234 | string PkgFile = Parse.FileName(); |
| 1235 | MD5 = Parse.MD5Hash(); |
| 1236 | if (PkgFile.empty() == true) |
| 1237 | return _error->Error(_("The package index files are corrupted. No Filename: " |
| 1238 | "field for package %s."), |
| 1239 | Version.ParentPkg().Name()); |
| 1240 | |
| 1241 | Desc.URI = Index->ArchiveURI(PkgFile); |
| 1242 | Desc.Description = Index->ArchiveInfo(Version); |
| 1243 | Desc.Owner = this; |
| 1244 | Desc.ShortDesc = Version.ParentPkg().Name(); |
| 1245 | |
| 1246 | // See if we already have the file. (Legacy filenames) |
| 1247 | FileSize = Version->Size; |
| 1248 | string FinalFile = _config->FindDir("Dir::Cache::Archives") + flNotDir(PkgFile); |
| 1249 | struct stat Buf; |
| 1250 | if (stat(FinalFile.c_str(),&Buf) == 0) |
| 1251 | { |
| 1252 | // Make sure the size matches |
| 1253 | if ((unsigned)Buf.st_size == Version->Size) |
| 1254 | { |
| 1255 | Complete = true; |
| 1256 | Local = true; |
| 1257 | Status = StatDone; |
| 1258 | StoreFilename = DestFile = FinalFile; |
| 1259 | return true; |
| 1260 | } |
| 1261 | |
| 1262 | /* Hmm, we have a file and its size does not match, this means it is |
| 1263 | an old style mismatched arch */ |
| 1264 | unlink(FinalFile.c_str()); |
| 1265 | } |
| 1266 | |
| 1267 | // Check it again using the new style output filenames |
| 1268 | FinalFile = _config->FindDir("Dir::Cache::Archives") + flNotDir(StoreFilename); |
| 1269 | if (stat(FinalFile.c_str(),&Buf) == 0) |
| 1270 | { |
| 1271 | // Make sure the size matches |
| 1272 | if ((unsigned)Buf.st_size == Version->Size) |
| 1273 | { |
| 1274 | Complete = true; |
| 1275 | Local = true; |
| 1276 | Status = StatDone; |
| 1277 | StoreFilename = DestFile = FinalFile; |
| 1278 | return true; |
| 1279 | } |
| 1280 | |
| 1281 | /* Hmm, we have a file and its size does not match, this shouldnt |
| 1282 | happen.. */ |
| 1283 | unlink(FinalFile.c_str()); |
| 1284 | } |
| 1285 | |
| 1286 | DestFile = _config->FindDir("Dir::Cache::Archives") + "partial/" + flNotDir(StoreFilename); |
| 1287 | |
| 1288 | // Check the destination file |
| 1289 | if (stat(DestFile.c_str(),&Buf) == 0) |
| 1290 | { |
| 1291 | // Hmm, the partial file is too big, erase it |
| 1292 | if ((unsigned)Buf.st_size > Version->Size) |
| 1293 | unlink(DestFile.c_str()); |
| 1294 | else |
| 1295 | PartialSize = Buf.st_size; |
| 1296 | } |
| 1297 | |
| 1298 | // Create the item |
| 1299 | Local = false; |
| 1300 | Desc.URI = Index->ArchiveURI(PkgFile); |
| 1301 | Desc.Description = Index->ArchiveInfo(Version); |
| 1302 | Desc.Owner = this; |
| 1303 | Desc.ShortDesc = Version.ParentPkg().Name(); |
| 1304 | QueueURI(Desc); |
| 1305 | |
| 1306 | Vf++; |
| 1307 | return true; |
| 1308 | } |
| 1309 | return false; |
| 1310 | } |
| 1311 | /*}}}*/ |
| 1312 | // AcqArchive::Done - Finished fetching /*{{{*/ |
| 1313 | // --------------------------------------------------------------------- |
| 1314 | /* */ |
| 1315 | void pkgAcqArchive::Done(string Message,unsigned long Size,string Md5Hash, |
| 1316 | pkgAcquire::MethodConfig *Cfg) |
| 1317 | { |
| 1318 | Item::Done(Message,Size,Md5Hash,Cfg); |
| 1319 | |
| 1320 | // Check the size |
| 1321 | if (Size != Version->Size) |
| 1322 | { |
| 1323 | Status = StatError; |
| 1324 | ErrorText = _("Size mismatch"); |
| 1325 | return; |
| 1326 | } |
| 1327 | |
| 1328 | // Check the md5 |
| 1329 | if (Md5Hash.empty() == false && MD5.empty() == false) |
| 1330 | { |
| 1331 | if (Md5Hash != MD5) |
| 1332 | { |
| 1333 | Status = StatError; |
| 1334 | ErrorText = _("MD5Sum mismatch"); |
| 1335 | if(FileExists(DestFile)) |
| 1336 | Rename(DestFile,DestFile + ".FAILED"); |
| 1337 | return; |
| 1338 | } |
| 1339 | } |
| 1340 | |
| 1341 | // Grab the output filename |
| 1342 | string FileName = LookupTag(Message,"Filename"); |
| 1343 | if (FileName.empty() == true) |
| 1344 | { |
| 1345 | Status = StatError; |
| 1346 | ErrorText = "Method gave a blank filename"; |
| 1347 | return; |
| 1348 | } |
| 1349 | |
| 1350 | Complete = true; |
| 1351 | |
| 1352 | // Reference filename |
| 1353 | if (FileName != DestFile) |
| 1354 | { |
| 1355 | StoreFilename = DestFile = FileName; |
| 1356 | Local = true; |
| 1357 | return; |
| 1358 | } |
| 1359 | |
| 1360 | // Done, move it into position |
| 1361 | string FinalFile = _config->FindDir("Dir::Cache::Archives"); |
| 1362 | FinalFile += flNotDir(StoreFilename); |
| 1363 | Rename(DestFile,FinalFile); |
| 1364 | |
| 1365 | StoreFilename = DestFile = FinalFile; |
| 1366 | Complete = true; |
| 1367 | } |
| 1368 | /*}}}*/ |
| 1369 | // AcqArchive::Failed - Failure handler /*{{{*/ |
| 1370 | // --------------------------------------------------------------------- |
| 1371 | /* Here we try other sources */ |
| 1372 | void pkgAcqArchive::Failed(string Message,pkgAcquire::MethodConfig *Cnf) |
| 1373 | { |
| 1374 | ErrorText = LookupTag(Message,"Message"); |
| 1375 | |
| 1376 | /* We don't really want to retry on failed media swaps, this prevents |
| 1377 | that. An interesting observation is that permanent failures are not |
| 1378 | recorded. */ |
| 1379 | if (Cnf->Removable == true && |
| 1380 | StringToBool(LookupTag(Message,"Transient-Failure"),false) == true) |
| 1381 | { |
| 1382 | // Vf = Version.FileList(); |
| 1383 | while (Vf.end() == false) Vf++; |
| 1384 | StoreFilename = string(); |
| 1385 | Item::Failed(Message,Cnf); |
| 1386 | return; |
| 1387 | } |
| 1388 | |
| 1389 | if (QueueNext() == false) |
| 1390 | { |
| 1391 | // This is the retry counter |
| 1392 | if (Retries != 0 && |
| 1393 | Cnf->LocalOnly == false && |
| 1394 | StringToBool(LookupTag(Message,"Transient-Failure"),false) == true) |
| 1395 | { |
| 1396 | Retries--; |
| 1397 | Vf = Version.FileList(); |
| 1398 | if (QueueNext() == true) |
| 1399 | return; |
| 1400 | } |
| 1401 | |
| 1402 | StoreFilename = string(); |
| 1403 | Item::Failed(Message,Cnf); |
| 1404 | } |
| 1405 | } |
| 1406 | /*}}}*/ |
| 1407 | // AcqArchive::IsTrusted - Determine whether this archive comes from a |
| 1408 | // trusted source /*{{{*/ |
| 1409 | // --------------------------------------------------------------------- |
| 1410 | bool pkgAcqArchive::IsTrusted() |
| 1411 | { |
| 1412 | return Trusted; |
| 1413 | } |
| 1414 | |
| 1415 | // AcqArchive::Finished - Fetching has finished, tidy up /*{{{*/ |
| 1416 | // --------------------------------------------------------------------- |
| 1417 | /* */ |
| 1418 | void pkgAcqArchive::Finished() |
| 1419 | { |
| 1420 | if (Status == pkgAcquire::Item::StatDone && |
| 1421 | Complete == true) |
| 1422 | return; |
| 1423 | StoreFilename = string(); |
| 1424 | } |
| 1425 | /*}}}*/ |
| 1426 | |
| 1427 | // AcqFile::pkgAcqFile - Constructor /*{{{*/ |
| 1428 | // --------------------------------------------------------------------- |
| 1429 | /* The file is added to the queue */ |
| 1430 | pkgAcqFile::pkgAcqFile(pkgAcquire *Owner,string URI,string MD5, |
| 1431 | unsigned long Size,string Dsc,string ShortDesc) : |
| 1432 | Item(Owner), Md5Hash(MD5) |
| 1433 | { |
| 1434 | Retries = _config->FindI("Acquire::Retries",0); |
| 1435 | |
| 1436 | DestFile = flNotDir(URI); |
| 1437 | |
| 1438 | // Create the item |
| 1439 | Desc.URI = URI; |
| 1440 | Desc.Description = Dsc; |
| 1441 | Desc.Owner = this; |
| 1442 | |
| 1443 | // Set the short description to the archive component |
| 1444 | Desc.ShortDesc = ShortDesc; |
| 1445 | |
| 1446 | // Get the transfer sizes |
| 1447 | FileSize = Size; |
| 1448 | struct stat Buf; |
| 1449 | if (stat(DestFile.c_str(),&Buf) == 0) |
| 1450 | { |
| 1451 | // Hmm, the partial file is too big, erase it |
| 1452 | if ((unsigned)Buf.st_size > Size) |
| 1453 | unlink(DestFile.c_str()); |
| 1454 | else |
| 1455 | PartialSize = Buf.st_size; |
| 1456 | } |
| 1457 | |
| 1458 | QueueURI(Desc); |
| 1459 | } |
| 1460 | /*}}}*/ |
| 1461 | // AcqFile::Done - Item downloaded OK /*{{{*/ |
| 1462 | // --------------------------------------------------------------------- |
| 1463 | /* */ |
| 1464 | void pkgAcqFile::Done(string Message,unsigned long Size,string MD5, |
| 1465 | pkgAcquire::MethodConfig *Cnf) |
| 1466 | { |
| 1467 | // Check the md5 |
| 1468 | if (Md5Hash.empty() == false && MD5.empty() == false) |
| 1469 | { |
| 1470 | if (Md5Hash != MD5) |
| 1471 | { |
| 1472 | Status = StatError; |
| 1473 | ErrorText = "MD5Sum mismatch"; |
| 1474 | Rename(DestFile,DestFile + ".FAILED"); |
| 1475 | return; |
| 1476 | } |
| 1477 | } |
| 1478 | |
| 1479 | Item::Done(Message,Size,MD5,Cnf); |
| 1480 | |
| 1481 | string FileName = LookupTag(Message,"Filename"); |
| 1482 | if (FileName.empty() == true) |
| 1483 | { |
| 1484 | Status = StatError; |
| 1485 | ErrorText = "Method gave a blank filename"; |
| 1486 | return; |
| 1487 | } |
| 1488 | |
| 1489 | Complete = true; |
| 1490 | |
| 1491 | // The files timestamp matches |
| 1492 | if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == true) |
| 1493 | return; |
| 1494 | |
| 1495 | // We have to copy it into place |
| 1496 | if (FileName != DestFile) |
| 1497 | { |
| 1498 | Local = true; |
| 1499 | if (_config->FindB("Acquire::Source-Symlinks",true) == false || |
| 1500 | Cnf->Removable == true) |
| 1501 | { |
| 1502 | Desc.URI = "copy:" + FileName; |
| 1503 | QueueURI(Desc); |
| 1504 | return; |
| 1505 | } |
| 1506 | |
| 1507 | // Erase the file if it is a symlink so we can overwrite it |
| 1508 | struct stat St; |
| 1509 | if (lstat(DestFile.c_str(),&St) == 0) |
| 1510 | { |
| 1511 | if (S_ISLNK(St.st_mode) != 0) |
| 1512 | unlink(DestFile.c_str()); |
| 1513 | } |
| 1514 | |
| 1515 | // Symlink the file |
| 1516 | if (symlink(FileName.c_str(),DestFile.c_str()) != 0) |
| 1517 | { |
| 1518 | ErrorText = "Link to " + DestFile + " failure "; |
| 1519 | Status = StatError; |
| 1520 | Complete = false; |
| 1521 | } |
| 1522 | } |
| 1523 | } |
| 1524 | /*}}}*/ |
| 1525 | // AcqFile::Failed - Failure handler /*{{{*/ |
| 1526 | // --------------------------------------------------------------------- |
| 1527 | /* Here we try other sources */ |
| 1528 | void pkgAcqFile::Failed(string Message,pkgAcquire::MethodConfig *Cnf) |
| 1529 | { |
| 1530 | ErrorText = LookupTag(Message,"Message"); |
| 1531 | |
| 1532 | // This is the retry counter |
| 1533 | if (Retries != 0 && |
| 1534 | Cnf->LocalOnly == false && |
| 1535 | StringToBool(LookupTag(Message,"Transient-Failure"),false) == true) |
| 1536 | { |
| 1537 | Retries--; |
| 1538 | QueueURI(Desc); |
| 1539 | return; |
| 1540 | } |
| 1541 | |
| 1542 | Item::Failed(Message,Cnf); |
| 1543 | } |
| 1544 | /*}}}*/ |