| 1 | // -*- mode: cpp; mode: fold -*- |
| 2 | // Description /*{{{*/ |
| 3 | // $Id: deblistparser.cc,v 1.29.2.5 2004/01/06 01:43:44 mdz Exp $ |
| 4 | /* ###################################################################### |
| 5 | |
| 6 | Package Cache Generator - Generator for the cache structure. |
| 7 | |
| 8 | This builds the cache structure from the abstract package list parser. |
| 9 | |
| 10 | ##################################################################### */ |
| 11 | /*}}}*/ |
| 12 | // Include Files /*{{{*/ |
| 13 | #include <config.h> |
| 14 | |
| 15 | #include <apt-pkg/deblistparser.h> |
| 16 | #include <apt-pkg/error.h> |
| 17 | #include <apt-pkg/configuration.h> |
| 18 | #include <apt-pkg/cachefilter.h> |
| 19 | #include <apt-pkg/aptconfiguration.h> |
| 20 | #include <apt-pkg/strutl.h> |
| 21 | #include <apt-pkg/fileutl.h> |
| 22 | #include <apt-pkg/crc-16.h> |
| 23 | #include <apt-pkg/md5.h> |
| 24 | #include <apt-pkg/mmap.h> |
| 25 | #include <apt-pkg/pkgcache.h> |
| 26 | #include <apt-pkg/cacheiterators.h> |
| 27 | #include <apt-pkg/tagfile.h> |
| 28 | #include <apt-pkg/macros.h> |
| 29 | |
| 30 | #include <stddef.h> |
| 31 | #include <string.h> |
| 32 | #include <algorithm> |
| 33 | #include <string> |
| 34 | #include <vector> |
| 35 | #include <ctype.h> |
| 36 | /*}}}*/ |
| 37 | |
| 38 | using std::string; |
| 39 | |
| 40 | static debListParser::WordList PrioList[] = { |
| 41 | {"required",pkgCache::State::Required}, |
| 42 | {"important",pkgCache::State::Important}, |
| 43 | {"standard",pkgCache::State::Standard}, |
| 44 | {"optional",pkgCache::State::Optional}, |
| 45 | {"extra",pkgCache::State::Extra}, |
| 46 | {NULL, 0}}; |
| 47 | |
| 48 | // ListParser::debListParser - Constructor /*{{{*/ |
| 49 | // --------------------------------------------------------------------- |
| 50 | /* Provide an architecture and only this one and "all" will be accepted |
| 51 | in Step(), if no Architecture is given we will accept every arch |
| 52 | we would accept in general with checkArchitecture() */ |
| 53 | debListParser::debListParser(FileFd *File, string const &Arch) : Tags(File), |
| 54 | Arch(Arch) { |
| 55 | if (Arch == "native") |
| 56 | this->Arch = _config->Find("APT::Architecture"); |
| 57 | Architectures = APT::Configuration::getArchitectures(); |
| 58 | MultiArchEnabled = Architectures.size() > 1; |
| 59 | } |
| 60 | /*}}}*/ |
| 61 | // ListParser::UniqFindTagWrite - Find the tag and write a unq string /*{{{*/ |
| 62 | // --------------------------------------------------------------------- |
| 63 | /* */ |
| 64 | unsigned long debListParser::UniqFindTagWrite(const char *Tag) |
| 65 | { |
| 66 | const char *Start; |
| 67 | const char *Stop; |
| 68 | if (Section.Find(Tag,Start,Stop) == false) |
| 69 | return 0; |
| 70 | return WriteUniqString(Start,Stop - Start); |
| 71 | } |
| 72 | /*}}}*/ |
| 73 | // ListParser::Package - Return the package name /*{{{*/ |
| 74 | // --------------------------------------------------------------------- |
| 75 | /* This is to return the name of the package this section describes */ |
| 76 | string debListParser::Package() { |
| 77 | string const Result = Section.FindS("Package"); |
| 78 | if(unlikely(Result.empty() == true)) |
| 79 | _error->Error("Encountered a section with no Package: header"); |
| 80 | return Result; |
| 81 | } |
| 82 | /*}}}*/ |
| 83 | // ListParser::Architecture - Return the package arch /*{{{*/ |
| 84 | // --------------------------------------------------------------------- |
| 85 | /* This will return the Architecture of the package this section describes */ |
| 86 | string debListParser::Architecture() { |
| 87 | return Section.FindS("Architecture"); |
| 88 | } |
| 89 | /*}}}*/ |
| 90 | // ListParser::ArchitectureAll /*{{{*/ |
| 91 | // --------------------------------------------------------------------- |
| 92 | /* */ |
| 93 | bool debListParser::ArchitectureAll() { |
| 94 | return Section.FindS("Architecture") == "all"; |
| 95 | } |
| 96 | /*}}}*/ |
| 97 | // ListParser::Version - Return the version string /*{{{*/ |
| 98 | // --------------------------------------------------------------------- |
| 99 | /* This is to return the string describing the version in debian form, |
| 100 | epoch:upstream-release. If this returns the blank string then the |
| 101 | entry is assumed to only describe package properties */ |
| 102 | string debListParser::Version() |
| 103 | { |
| 104 | return Section.FindS("Version"); |
| 105 | } |
| 106 | /*}}}*/ |
| 107 | unsigned char debListParser::ParseMultiArch(bool const showErrors) /*{{{*/ |
| 108 | { |
| 109 | unsigned char MA; |
| 110 | string const MultiArch = Section.FindS("Multi-Arch"); |
| 111 | if (MultiArch.empty() == true) |
| 112 | MA = pkgCache::Version::None; |
| 113 | else if (MultiArch == "same") { |
| 114 | if (ArchitectureAll() == true) |
| 115 | { |
| 116 | if (showErrors == true) |
| 117 | _error->Warning("Architecture: all package '%s' can't be Multi-Arch: same", |
| 118 | Section.FindS("Package").c_str()); |
| 119 | MA = pkgCache::Version::None; |
| 120 | } |
| 121 | else |
| 122 | MA = pkgCache::Version::Same; |
| 123 | } |
| 124 | else if (MultiArch == "foreign") |
| 125 | MA = pkgCache::Version::Foreign; |
| 126 | else if (MultiArch == "allowed") |
| 127 | MA = pkgCache::Version::Allowed; |
| 128 | else |
| 129 | { |
| 130 | if (showErrors == true) |
| 131 | _error->Warning("Unknown Multi-Arch type '%s' for package '%s'", |
| 132 | MultiArch.c_str(), Section.FindS("Package").c_str()); |
| 133 | MA = pkgCache::Version::None; |
| 134 | } |
| 135 | |
| 136 | if (ArchitectureAll() == true) |
| 137 | MA |= pkgCache::Version::All; |
| 138 | |
| 139 | return MA; |
| 140 | } |
| 141 | /*}}}*/ |
| 142 | // ListParser::NewVersion - Fill in the version structure /*{{{*/ |
| 143 | // --------------------------------------------------------------------- |
| 144 | /* */ |
| 145 | bool debListParser::NewVersion(pkgCache::VerIterator &Ver) |
| 146 | { |
| 147 | // Parse the section |
| 148 | Ver->Section = UniqFindTagWrite("Section"); |
| 149 | Ver->MultiArch = ParseMultiArch(true); |
| 150 | // Archive Size |
| 151 | Ver->Size = Section.FindULL("Size"); |
| 152 | // Unpacked Size (in K) |
| 153 | Ver->InstalledSize = Section.FindULL("Installed-Size"); |
| 154 | Ver->InstalledSize *= 1024; |
| 155 | |
| 156 | // Priority |
| 157 | const char *Start; |
| 158 | const char *Stop; |
| 159 | if (Section.Find("Priority",Start,Stop) == true) |
| 160 | { |
| 161 | if (GrabWord(string(Start,Stop-Start),PrioList,Ver->Priority) == false) |
| 162 | Ver->Priority = pkgCache::State::Extra; |
| 163 | } |
| 164 | |
| 165 | if (ParseDepends(Ver,"Depends",pkgCache::Dep::Depends) == false) |
| 166 | return false; |
| 167 | if (ParseDepends(Ver,"Pre-Depends",pkgCache::Dep::PreDepends) == false) |
| 168 | return false; |
| 169 | if (ParseDepends(Ver,"Suggests",pkgCache::Dep::Suggests) == false) |
| 170 | return false; |
| 171 | if (ParseDepends(Ver,"Recommends",pkgCache::Dep::Recommends) == false) |
| 172 | return false; |
| 173 | if (ParseDepends(Ver,"Conflicts",pkgCache::Dep::Conflicts) == false) |
| 174 | return false; |
| 175 | if (ParseDepends(Ver,"Breaks",pkgCache::Dep::DpkgBreaks) == false) |
| 176 | return false; |
| 177 | if (ParseDepends(Ver,"Replaces",pkgCache::Dep::Replaces) == false) |
| 178 | return false; |
| 179 | if (ParseDepends(Ver,"Enhances",pkgCache::Dep::Enhances) == false) |
| 180 | return false; |
| 181 | |
| 182 | // Obsolete. |
| 183 | if (ParseDepends(Ver,"Optional",pkgCache::Dep::Suggests) == false) |
| 184 | return false; |
| 185 | |
| 186 | if (ParseProvides(Ver) == false) |
| 187 | return false; |
| 188 | |
| 189 | return true; |
| 190 | } |
| 191 | /*}}}*/ |
| 192 | // ListParser::Description - Return the description string /*{{{*/ |
| 193 | // --------------------------------------------------------------------- |
| 194 | /* This is to return the string describing the package in debian |
| 195 | form. If this returns the blank string then the entry is assumed to |
| 196 | only describe package properties */ |
| 197 | string debListParser::Description() |
| 198 | { |
| 199 | string const lang = DescriptionLanguage(); |
| 200 | if (lang.empty()) |
| 201 | return Section.FindS("Description"); |
| 202 | else |
| 203 | return Section.FindS(string("Description-").append(lang).c_str()); |
| 204 | } |
| 205 | /*}}}*/ |
| 206 | // ListParser::DescriptionLanguage - Return the description lang string /*{{{*/ |
| 207 | // --------------------------------------------------------------------- |
| 208 | /* This is to return the string describing the language of |
| 209 | description. If this returns the blank string then the entry is |
| 210 | assumed to describe original description. */ |
| 211 | string debListParser::DescriptionLanguage() |
| 212 | { |
| 213 | if (Section.FindS("Description").empty() == false) |
| 214 | return ""; |
| 215 | |
| 216 | std::vector<string> const lang = APT::Configuration::getLanguages(true); |
| 217 | for (std::vector<string>::const_iterator l = lang.begin(); |
| 218 | l != lang.end(); ++l) |
| 219 | if (Section.FindS(string("Description-").append(*l).c_str()).empty() == false) |
| 220 | return *l; |
| 221 | |
| 222 | return ""; |
| 223 | } |
| 224 | /*}}}*/ |
| 225 | // ListParser::Description - Return the description_md5 MD5SumValue /*{{{*/ |
| 226 | // --------------------------------------------------------------------- |
| 227 | /* This is to return the md5 string to allow the check if it is the right |
| 228 | description. If no Description-md5 is found in the section it will be |
| 229 | calculated. |
| 230 | */ |
| 231 | MD5SumValue debListParser::Description_md5() |
| 232 | { |
| 233 | string const value = Section.FindS("Description-md5"); |
| 234 | if (value.empty() == true) |
| 235 | { |
| 236 | std::string const desc = Description() + "\n"; |
| 237 | if (desc == "\n") |
| 238 | return MD5SumValue(); |
| 239 | |
| 240 | MD5Summation md5; |
| 241 | md5.Add(desc.c_str()); |
| 242 | return md5.Result(); |
| 243 | } |
| 244 | else if (likely(value.size() == 32)) |
| 245 | { |
| 246 | if (likely(value.find_first_not_of("0123456789abcdefABCDEF") == string::npos)) |
| 247 | return MD5SumValue(value); |
| 248 | _error->Error("Malformed Description-md5 line; includes invalid character '%s'", value.c_str()); |
| 249 | return MD5SumValue(); |
| 250 | } |
| 251 | _error->Error("Malformed Description-md5 line; doesn't have the required length (32 != %d) '%s'", (int)value.size(), value.c_str()); |
| 252 | return MD5SumValue(); |
| 253 | } |
| 254 | /*}}}*/ |
| 255 | // ListParser::UsePackage - Update a package structure /*{{{*/ |
| 256 | // --------------------------------------------------------------------- |
| 257 | /* This is called to update the package with any new information |
| 258 | that might be found in the section */ |
| 259 | bool debListParser::UsePackage(pkgCache::PkgIterator &Pkg, |
| 260 | pkgCache::VerIterator &Ver) |
| 261 | { |
| 262 | if (Pkg->Section == 0) |
| 263 | Pkg->Section = UniqFindTagWrite("Section"); |
| 264 | |
| 265 | string const static myArch = _config->Find("APT::Architecture"); |
| 266 | // Possible values are: "all", "native", "installed" and "none" |
| 267 | // The "installed" mode is handled by ParseStatus(), See #544481 and friends. |
| 268 | string const static essential = _config->Find("pkgCacheGen::Essential", "all"); |
| 269 | if (essential == "all" || |
| 270 | (essential == "native" && Pkg->Arch != 0 && myArch == Pkg.Arch())) |
| 271 | if (Section.FindFlag("Essential",Pkg->Flags,pkgCache::Flag::Essential) == false) |
| 272 | return false; |
| 273 | if (Section.FindFlag("Important",Pkg->Flags,pkgCache::Flag::Important) == false) |
| 274 | return false; |
| 275 | |
| 276 | if (strcmp(Pkg.Name(),"apt") == 0) |
| 277 | { |
| 278 | if ((essential == "native" && Pkg->Arch != 0 && myArch == Pkg.Arch()) || |
| 279 | essential == "all") |
| 280 | Pkg->Flags |= pkgCache::Flag::Essential | pkgCache::Flag::Important; |
| 281 | else |
| 282 | Pkg->Flags |= pkgCache::Flag::Important; |
| 283 | } |
| 284 | |
| 285 | if (ParseStatus(Pkg,Ver) == false) |
| 286 | return false; |
| 287 | return true; |
| 288 | } |
| 289 | /*}}}*/ |
| 290 | // ListParser::VersionHash - Compute a unique hash for this version /*{{{*/ |
| 291 | // --------------------------------------------------------------------- |
| 292 | /* */ |
| 293 | unsigned short debListParser::VersionHash() |
| 294 | { |
| 295 | const char *Sections[] ={"Installed-Size", |
| 296 | "Depends", |
| 297 | "Pre-Depends", |
| 298 | // "Suggests", |
| 299 | // "Recommends", |
| 300 | "Conflicts", |
| 301 | "Breaks", |
| 302 | "Replaces",0}; |
| 303 | unsigned long Result = INIT_FCS; |
| 304 | char S[1024]; |
| 305 | for (const char * const *I = Sections; *I != 0; ++I) |
| 306 | { |
| 307 | const char *Start; |
| 308 | const char *End; |
| 309 | if (Section.Find(*I,Start,End) == false || End - Start >= (signed)sizeof(S)) |
| 310 | continue; |
| 311 | |
| 312 | /* Strip out any spaces from the text, this undoes dpkgs reformatting |
| 313 | of certain fields. dpkg also has the rather interesting notion of |
| 314 | reformatting depends operators < -> <= */ |
| 315 | char *J = S; |
| 316 | for (; Start != End; ++Start) |
| 317 | { |
| 318 | if (isspace(*Start) != 0) |
| 319 | continue; |
| 320 | *J++ = tolower_ascii(*Start); |
| 321 | |
| 322 | if ((*Start == '<' || *Start == '>') && Start[1] != *Start && Start[1] != '=') |
| 323 | *J++ = '='; |
| 324 | } |
| 325 | |
| 326 | Result = AddCRC16(Result,S,J - S); |
| 327 | } |
| 328 | |
| 329 | return Result; |
| 330 | } |
| 331 | /*}}}*/ |
| 332 | // ListParser::ParseStatus - Parse the status field /*{{{*/ |
| 333 | // --------------------------------------------------------------------- |
| 334 | /* Status lines are of the form, |
| 335 | Status: want flag status |
| 336 | want = unknown, install, hold, deinstall, purge |
| 337 | flag = ok, reinstreq, hold, hold-reinstreq |
| 338 | status = not-installed, unpacked, half-configured, |
| 339 | half-installed, config-files, post-inst-failed, |
| 340 | removal-failed, installed |
| 341 | |
| 342 | Some of the above are obsolete (I think?) flag = hold-* and |
| 343 | status = post-inst-failed, removal-failed at least. |
| 344 | */ |
| 345 | bool debListParser::ParseStatus(pkgCache::PkgIterator &Pkg, |
| 346 | pkgCache::VerIterator &Ver) |
| 347 | { |
| 348 | const char *Start; |
| 349 | const char *Stop; |
| 350 | if (Section.Find("Status",Start,Stop) == false) |
| 351 | return true; |
| 352 | |
| 353 | // UsePackage() is responsible for setting the flag in the default case |
| 354 | bool const static essential = _config->Find("pkgCacheGen::Essential", "") == "installed"; |
| 355 | if (essential == true && |
| 356 | Section.FindFlag("Essential",Pkg->Flags,pkgCache::Flag::Essential) == false) |
| 357 | return false; |
| 358 | |
| 359 | // Isolate the first word |
| 360 | const char *I = Start; |
| 361 | for(; I < Stop && *I != ' '; I++); |
| 362 | if (I >= Stop || *I != ' ') |
| 363 | return _error->Error("Malformed Status line"); |
| 364 | |
| 365 | // Process the want field |
| 366 | WordList WantList[] = {{"unknown",pkgCache::State::Unknown}, |
| 367 | {"install",pkgCache::State::Install}, |
| 368 | {"hold",pkgCache::State::Hold}, |
| 369 | {"deinstall",pkgCache::State::DeInstall}, |
| 370 | {"purge",pkgCache::State::Purge}, |
| 371 | {NULL, 0}}; |
| 372 | if (GrabWord(string(Start,I-Start),WantList,Pkg->SelectedState) == false) |
| 373 | return _error->Error("Malformed 1st word in the Status line"); |
| 374 | |
| 375 | // Isloate the next word |
| 376 | I++; |
| 377 | Start = I; |
| 378 | for(; I < Stop && *I != ' '; I++); |
| 379 | if (I >= Stop || *I != ' ') |
| 380 | return _error->Error("Malformed status line, no 2nd word"); |
| 381 | |
| 382 | // Process the flag field |
| 383 | WordList FlagList[] = {{"ok",pkgCache::State::Ok}, |
| 384 | {"reinstreq",pkgCache::State::ReInstReq}, |
| 385 | {"hold",pkgCache::State::HoldInst}, |
| 386 | {"hold-reinstreq",pkgCache::State::HoldReInstReq}, |
| 387 | {NULL, 0}}; |
| 388 | if (GrabWord(string(Start,I-Start),FlagList,Pkg->InstState) == false) |
| 389 | return _error->Error("Malformed 2nd word in the Status line"); |
| 390 | |
| 391 | // Isloate the last word |
| 392 | I++; |
| 393 | Start = I; |
| 394 | for(; I < Stop && *I != ' '; I++); |
| 395 | if (I != Stop) |
| 396 | return _error->Error("Malformed Status line, no 3rd word"); |
| 397 | |
| 398 | // Process the flag field |
| 399 | WordList StatusList[] = {{"not-installed",pkgCache::State::NotInstalled}, |
| 400 | {"unpacked",pkgCache::State::UnPacked}, |
| 401 | {"half-configured",pkgCache::State::HalfConfigured}, |
| 402 | {"installed",pkgCache::State::Installed}, |
| 403 | {"half-installed",pkgCache::State::HalfInstalled}, |
| 404 | {"config-files",pkgCache::State::ConfigFiles}, |
| 405 | {"triggers-awaited",pkgCache::State::TriggersAwaited}, |
| 406 | {"triggers-pending",pkgCache::State::TriggersPending}, |
| 407 | {"post-inst-failed",pkgCache::State::HalfConfigured}, |
| 408 | {"removal-failed",pkgCache::State::HalfInstalled}, |
| 409 | {NULL, 0}}; |
| 410 | if (GrabWord(string(Start,I-Start),StatusList,Pkg->CurrentState) == false) |
| 411 | return _error->Error("Malformed 3rd word in the Status line"); |
| 412 | |
| 413 | /* A Status line marks the package as indicating the current |
| 414 | version as well. Only if it is actually installed.. Otherwise |
| 415 | the interesting dpkg handling of the status file creates bogus |
| 416 | entries. */ |
| 417 | if (!(Pkg->CurrentState == pkgCache::State::NotInstalled || |
| 418 | Pkg->CurrentState == pkgCache::State::ConfigFiles)) |
| 419 | { |
| 420 | if (Ver.end() == true) |
| 421 | _error->Warning("Encountered status field in a non-version description"); |
| 422 | else |
| 423 | Pkg->CurrentVer = Ver.Index(); |
| 424 | } |
| 425 | |
| 426 | return true; |
| 427 | } |
| 428 | |
| 429 | const char *debListParser::ConvertRelation(const char *I,unsigned int &Op) |
| 430 | { |
| 431 | // Determine the operator |
| 432 | switch (*I) |
| 433 | { |
| 434 | case '<': |
| 435 | I++; |
| 436 | if (*I == '=') |
| 437 | { |
| 438 | I++; |
| 439 | Op = pkgCache::Dep::LessEq; |
| 440 | break; |
| 441 | } |
| 442 | |
| 443 | if (*I == '<') |
| 444 | { |
| 445 | I++; |
| 446 | Op = pkgCache::Dep::Less; |
| 447 | break; |
| 448 | } |
| 449 | |
| 450 | // < is the same as <= and << is really Cs < for some reason |
| 451 | Op = pkgCache::Dep::LessEq; |
| 452 | break; |
| 453 | |
| 454 | case '>': |
| 455 | I++; |
| 456 | if (*I == '=') |
| 457 | { |
| 458 | I++; |
| 459 | Op = pkgCache::Dep::GreaterEq; |
| 460 | break; |
| 461 | } |
| 462 | |
| 463 | if (*I == '>') |
| 464 | { |
| 465 | I++; |
| 466 | Op = pkgCache::Dep::Greater; |
| 467 | break; |
| 468 | } |
| 469 | |
| 470 | // > is the same as >= and >> is really Cs > for some reason |
| 471 | Op = pkgCache::Dep::GreaterEq; |
| 472 | break; |
| 473 | |
| 474 | case '=': |
| 475 | Op = pkgCache::Dep::Equals; |
| 476 | I++; |
| 477 | break; |
| 478 | |
| 479 | // HACK around bad package definitions |
| 480 | default: |
| 481 | Op = pkgCache::Dep::Equals; |
| 482 | break; |
| 483 | } |
| 484 | return I; |
| 485 | } |
| 486 | /*}}}*/ |
| 487 | // ListParser::ParseDepends - Parse a dependency element /*{{{*/ |
| 488 | // --------------------------------------------------------------------- |
| 489 | /* This parses the dependency elements out of a standard string in place, |
| 490 | bit by bit. */ |
| 491 | const char *debListParser::ParseDepends(const char *Start,const char *Stop, |
| 492 | std::string &Package,std::string &Ver,unsigned int &Op) |
| 493 | { return ParseDepends(Start, Stop, Package, Ver, Op, false, true, false); } |
| 494 | const char *debListParser::ParseDepends(const char *Start,const char *Stop, |
| 495 | std::string &Package,std::string &Ver,unsigned int &Op, |
| 496 | bool const &ParseArchFlags) |
| 497 | { return ParseDepends(Start, Stop, Package, Ver, Op, ParseArchFlags, true, false); } |
| 498 | const char *debListParser::ParseDepends(const char *Start,const char *Stop, |
| 499 | std::string &Package,std::string &Ver,unsigned int &Op, |
| 500 | bool const &ParseArchFlags, bool const &StripMultiArch) |
| 501 | { return ParseDepends(Start, Stop, Package, Ver, Op, ParseArchFlags, StripMultiArch, false); } |
| 502 | const char *debListParser::ParseDepends(const char *Start,const char *Stop, |
| 503 | string &Package,string &Ver, |
| 504 | unsigned int &Op, bool const &ParseArchFlags, |
| 505 | bool const &StripMultiArch, |
| 506 | bool const &ParseRestrictionsList) |
| 507 | { |
| 508 | // Strip off leading space |
| 509 | for (;Start != Stop && isspace(*Start) != 0; ++Start); |
| 510 | |
| 511 | // Parse off the package name |
| 512 | const char *I = Start; |
| 513 | for (;I != Stop && isspace(*I) == 0 && *I != '(' && *I != ')' && |
| 514 | *I != ',' && *I != '|' && *I != '[' && *I != ']' && |
| 515 | *I != '<' && *I != '>'; ++I); |
| 516 | |
| 517 | // Malformed, no '(' |
| 518 | if (I != Stop && *I == ')') |
| 519 | return 0; |
| 520 | |
| 521 | if (I == Start) |
| 522 | return 0; |
| 523 | |
| 524 | // Stash the package name |
| 525 | Package.assign(Start,I - Start); |
| 526 | |
| 527 | // We don't want to confuse library users which can't handle MultiArch |
| 528 | string const arch = _config->Find("APT::Architecture"); |
| 529 | if (StripMultiArch == true) { |
| 530 | size_t const found = Package.rfind(':'); |
| 531 | if (found != string::npos && |
| 532 | (strcmp(Package.c_str() + found, ":any") == 0 || |
| 533 | strcmp(Package.c_str() + found, ":native") == 0 || |
| 534 | strcmp(Package.c_str() + found + 1, arch.c_str()) == 0)) |
| 535 | Package = Package.substr(0,found); |
| 536 | } |
| 537 | |
| 538 | // Skip white space to the '(' |
| 539 | for (;I != Stop && isspace(*I) != 0 ; I++); |
| 540 | |
| 541 | // Parse a version |
| 542 | if (I != Stop && *I == '(') |
| 543 | { |
| 544 | // Skip the '(' |
| 545 | for (I++; I != Stop && isspace(*I) != 0 ; I++); |
| 546 | if (I + 3 >= Stop) |
| 547 | return 0; |
| 548 | I = ConvertRelation(I,Op); |
| 549 | |
| 550 | // Skip whitespace |
| 551 | for (;I != Stop && isspace(*I) != 0; I++); |
| 552 | Start = I; |
| 553 | I = (const char*) memchr(I, ')', Stop - I); |
| 554 | if (I == NULL || Start == I) |
| 555 | return 0; |
| 556 | |
| 557 | // Skip trailing whitespace |
| 558 | const char *End = I; |
| 559 | for (; End > Start && isspace(End[-1]); End--); |
| 560 | |
| 561 | Ver.assign(Start,End-Start); |
| 562 | I++; |
| 563 | } |
| 564 | else |
| 565 | { |
| 566 | Ver.clear(); |
| 567 | Op = pkgCache::Dep::NoOp; |
| 568 | } |
| 569 | |
| 570 | // Skip whitespace |
| 571 | for (;I != Stop && isspace(*I) != 0; I++); |
| 572 | |
| 573 | if (ParseArchFlags == true) |
| 574 | { |
| 575 | APT::CacheFilter::PackageArchitectureMatchesSpecification matchesArch(arch, false); |
| 576 | |
| 577 | // Parse an architecture |
| 578 | if (I != Stop && *I == '[') |
| 579 | { |
| 580 | ++I; |
| 581 | // malformed |
| 582 | if (unlikely(I == Stop)) |
| 583 | return 0; |
| 584 | |
| 585 | const char *End = I; |
| 586 | bool Found = false; |
| 587 | bool NegArch = false; |
| 588 | while (I != Stop) |
| 589 | { |
| 590 | // look for whitespace or ending ']' |
| 591 | for (;End != Stop && !isspace(*End) && *End != ']'; ++End); |
| 592 | |
| 593 | if (unlikely(End == Stop)) |
| 594 | return 0; |
| 595 | |
| 596 | if (*I == '!') |
| 597 | { |
| 598 | NegArch = true; |
| 599 | ++I; |
| 600 | } |
| 601 | |
| 602 | std::string arch(I, End); |
| 603 | if (arch.empty() == false && matchesArch(arch.c_str()) == true) |
| 604 | { |
| 605 | Found = true; |
| 606 | if (I[-1] != '!') |
| 607 | NegArch = false; |
| 608 | // we found a match, so fast-forward to the end of the wildcards |
| 609 | for (; End != Stop && *End != ']'; ++End); |
| 610 | } |
| 611 | |
| 612 | if (*End++ == ']') { |
| 613 | I = End; |
| 614 | break; |
| 615 | } |
| 616 | |
| 617 | I = End; |
| 618 | for (;I != Stop && isspace(*I) != 0; I++); |
| 619 | } |
| 620 | |
| 621 | if (NegArch == true) |
| 622 | Found = !Found; |
| 623 | |
| 624 | if (Found == false) |
| 625 | Package = ""; /* not for this arch */ |
| 626 | } |
| 627 | |
| 628 | // Skip whitespace |
| 629 | for (;I != Stop && isspace(*I) != 0; I++); |
| 630 | } |
| 631 | |
| 632 | if (ParseRestrictionsList == true) |
| 633 | { |
| 634 | // Parse a restrictions list |
| 635 | if (I != Stop && *I == '<') |
| 636 | { |
| 637 | ++I; |
| 638 | // malformed |
| 639 | if (unlikely(I == Stop)) |
| 640 | return 0; |
| 641 | |
| 642 | std::vector<string> const profiles = APT::Configuration::getBuildProfiles(); |
| 643 | |
| 644 | const char *End = I; |
| 645 | bool Found = false; |
| 646 | bool NegRestriction = false; |
| 647 | while (I != Stop) |
| 648 | { |
| 649 | // look for whitespace or ending '>' |
| 650 | for (;End != Stop && !isspace(*End) && *End != '>'; ++End); |
| 651 | |
| 652 | if (unlikely(End == Stop)) |
| 653 | return 0; |
| 654 | |
| 655 | if (*I == '!') |
| 656 | { |
| 657 | NegRestriction = true; |
| 658 | ++I; |
| 659 | } |
| 660 | |
| 661 | std::string restriction(I, End); |
| 662 | |
| 663 | std::string prefix = "profile."; |
| 664 | // only support for "profile" prefix, ignore others |
| 665 | if (restriction.size() > prefix.size() && |
| 666 | restriction.substr(0, prefix.size()) == prefix) |
| 667 | { |
| 668 | // get the name of the profile |
| 669 | restriction = restriction.substr(prefix.size()); |
| 670 | |
| 671 | if (restriction.empty() == false && profiles.empty() == false && |
| 672 | std::find(profiles.begin(), profiles.end(), restriction) != profiles.end()) |
| 673 | { |
| 674 | Found = true; |
| 675 | if (I[-1] != '!') |
| 676 | NegRestriction = false; |
| 677 | // we found a match, so fast-forward to the end of the wildcards |
| 678 | for (; End != Stop && *End != '>'; ++End); |
| 679 | } |
| 680 | } |
| 681 | |
| 682 | if (*End++ == '>') { |
| 683 | I = End; |
| 684 | break; |
| 685 | } |
| 686 | |
| 687 | I = End; |
| 688 | for (;I != Stop && isspace(*I) != 0; I++); |
| 689 | } |
| 690 | |
| 691 | if (NegRestriction == true) |
| 692 | Found = !Found; |
| 693 | |
| 694 | if (Found == false) |
| 695 | Package = ""; /* not for this restriction */ |
| 696 | } |
| 697 | |
| 698 | // Skip whitespace |
| 699 | for (;I != Stop && isspace(*I) != 0; I++); |
| 700 | } |
| 701 | |
| 702 | if (I != Stop && *I == '|') |
| 703 | Op |= pkgCache::Dep::Or; |
| 704 | |
| 705 | if (I == Stop || *I == ',' || *I == '|') |
| 706 | { |
| 707 | if (I != Stop) |
| 708 | for (I++; I != Stop && isspace(*I) != 0; I++); |
| 709 | return I; |
| 710 | } |
| 711 | |
| 712 | return 0; |
| 713 | } |
| 714 | /*}}}*/ |
| 715 | // ListParser::ParseDepends - Parse a dependency list /*{{{*/ |
| 716 | // --------------------------------------------------------------------- |
| 717 | /* This is the higher level depends parser. It takes a tag and generates |
| 718 | a complete depends tree for the given version. */ |
| 719 | bool debListParser::ParseDepends(pkgCache::VerIterator &Ver, |
| 720 | const char *Tag,unsigned int Type) |
| 721 | { |
| 722 | const char *Start; |
| 723 | const char *Stop; |
| 724 | if (Section.Find(Tag,Start,Stop) == false) |
| 725 | return true; |
| 726 | |
| 727 | string const pkgArch = Ver.Arch(); |
| 728 | |
| 729 | while (1) |
| 730 | { |
| 731 | string Package; |
| 732 | string Version; |
| 733 | unsigned int Op; |
| 734 | |
| 735 | Start = ParseDepends(Start, Stop, Package, Version, Op, false, false, false); |
| 736 | if (Start == 0) |
| 737 | return _error->Error("Problem parsing dependency %s",Tag); |
| 738 | size_t const found = Package.rfind(':'); |
| 739 | |
| 740 | // If negative is unspecific it needs to apply on all architectures |
| 741 | if (MultiArchEnabled == true && found == string::npos && |
| 742 | (Type == pkgCache::Dep::Conflicts || |
| 743 | Type == pkgCache::Dep::DpkgBreaks || |
| 744 | Type == pkgCache::Dep::Replaces)) |
| 745 | { |
| 746 | for (std::vector<std::string>::const_iterator a = Architectures.begin(); |
| 747 | a != Architectures.end(); ++a) |
| 748 | if (NewDepends(Ver,Package,*a,Version,Op,Type) == false) |
| 749 | return false; |
| 750 | if (NewDepends(Ver,Package,"none",Version,Op,Type) == false) |
| 751 | return false; |
| 752 | } |
| 753 | else if (MultiArchEnabled == true && found != string::npos && |
| 754 | strcmp(Package.c_str() + found, ":any") != 0) |
| 755 | { |
| 756 | string Arch = Package.substr(found+1, string::npos); |
| 757 | Package = Package.substr(0, found); |
| 758 | // Such dependencies are not supposed to be accepted … |
| 759 | // … but this is probably the best thing to do. |
| 760 | if (Arch == "native") |
| 761 | Arch = _config->Find("APT::Architecture"); |
| 762 | if (NewDepends(Ver,Package,Arch,Version,Op,Type) == false) |
| 763 | return false; |
| 764 | } |
| 765 | else |
| 766 | { |
| 767 | if (NewDepends(Ver,Package,pkgArch,Version,Op,Type) == false) |
| 768 | return false; |
| 769 | if ((Type == pkgCache::Dep::Conflicts || |
| 770 | Type == pkgCache::Dep::DpkgBreaks || |
| 771 | Type == pkgCache::Dep::Replaces) && |
| 772 | NewDepends(Ver, Package, |
| 773 | (pkgArch != "none") ? "none" : _config->Find("APT::Architecture"), |
| 774 | Version,Op,Type) == false) |
| 775 | return false; |
| 776 | } |
| 777 | if (Start == Stop) |
| 778 | break; |
| 779 | } |
| 780 | return true; |
| 781 | } |
| 782 | /*}}}*/ |
| 783 | // ListParser::ParseProvides - Parse the provides list /*{{{*/ |
| 784 | // --------------------------------------------------------------------- |
| 785 | /* */ |
| 786 | bool debListParser::ParseProvides(pkgCache::VerIterator &Ver) |
| 787 | { |
| 788 | const char *Start; |
| 789 | const char *Stop; |
| 790 | if (Section.Find("Provides",Start,Stop) == true) |
| 791 | { |
| 792 | string Package; |
| 793 | string Version; |
| 794 | string const Arch = Ver.Arch(); |
| 795 | unsigned int Op; |
| 796 | |
| 797 | while (1) |
| 798 | { |
| 799 | Start = ParseDepends(Start,Stop,Package,Version,Op); |
| 800 | if (Start == 0) |
| 801 | return _error->Error("Problem parsing Provides line"); |
| 802 | if (Op != pkgCache::Dep::NoOp) { |
| 803 | _error->Warning("Ignoring Provides line with DepCompareOp for package %s", Package.c_str()); |
| 804 | } else if ((Ver->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign) { |
| 805 | if (NewProvidesAllArch(Ver, Package, Version) == false) |
| 806 | return false; |
| 807 | } else { |
| 808 | if (NewProvides(Ver, Package, Arch, Version) == false) |
| 809 | return false; |
| 810 | } |
| 811 | |
| 812 | if (Start == Stop) |
| 813 | break; |
| 814 | } |
| 815 | } |
| 816 | |
| 817 | if ((Ver->MultiArch & pkgCache::Version::Allowed) == pkgCache::Version::Allowed) |
| 818 | { |
| 819 | string const Package = string(Ver.ParentPkg().Name()).append(":").append("any"); |
| 820 | return NewProvidesAllArch(Ver, Package, Ver.VerStr()); |
| 821 | } |
| 822 | else if ((Ver->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign) |
| 823 | return NewProvidesAllArch(Ver, Ver.ParentPkg().Name(), Ver.VerStr()); |
| 824 | |
| 825 | return true; |
| 826 | } |
| 827 | /*}}}*/ |
| 828 | // ListParser::NewProvides - add provides for all architectures /*{{{*/ |
| 829 | bool debListParser::NewProvidesAllArch(pkgCache::VerIterator &Ver, string const &Package, |
| 830 | string const &Version) { |
| 831 | for (std::vector<string>::const_iterator a = Architectures.begin(); |
| 832 | a != Architectures.end(); ++a) |
| 833 | { |
| 834 | if (NewProvides(Ver, Package, *a, Version) == false) |
| 835 | return false; |
| 836 | } |
| 837 | return true; |
| 838 | } |
| 839 | /*}}}*/ |
| 840 | // ListParser::GrabWord - Matches a word and returns /*{{{*/ |
| 841 | // --------------------------------------------------------------------- |
| 842 | /* Looks for a word in a list of words - for ParseStatus */ |
| 843 | bool debListParser::GrabWord(string Word,WordList *List,unsigned char &Out) |
| 844 | { |
| 845 | for (unsigned int C = 0; List[C].Str != 0; C++) |
| 846 | { |
| 847 | if (strcasecmp(Word.c_str(),List[C].Str) == 0) |
| 848 | { |
| 849 | Out = List[C].Val; |
| 850 | return true; |
| 851 | } |
| 852 | } |
| 853 | return false; |
| 854 | } |
| 855 | /*}}}*/ |
| 856 | // ListParser::Step - Move to the next section in the file /*{{{*/ |
| 857 | // --------------------------------------------------------------------- |
| 858 | /* This has to be careful to only process the correct architecture */ |
| 859 | bool debListParser::Step() |
| 860 | { |
| 861 | iOffset = Tags.Offset(); |
| 862 | while (Tags.Step(Section) == true) |
| 863 | { |
| 864 | /* See if this is the correct Architecture, if it isn't then we |
| 865 | drop the whole section. A missing arch tag only happens (in theory) |
| 866 | inside the Status file, so that is a positive return */ |
| 867 | string const Architecture = Section.FindS("Architecture"); |
| 868 | |
| 869 | if (Arch.empty() == true || Arch == "any" || MultiArchEnabled == false) |
| 870 | { |
| 871 | if (APT::Configuration::checkArchitecture(Architecture) == true) |
| 872 | return true; |
| 873 | /* parse version stanzas without an architecture only in the status file |
| 874 | (and as misfortune bycatch flat-archives) */ |
| 875 | if ((Arch.empty() == true || Arch == "any") && Architecture.empty() == true) |
| 876 | return true; |
| 877 | } |
| 878 | else |
| 879 | { |
| 880 | if (Architecture == Arch) |
| 881 | return true; |
| 882 | |
| 883 | if (Architecture == "all" && Arch == _config->Find("APT::Architecture")) |
| 884 | return true; |
| 885 | } |
| 886 | |
| 887 | iOffset = Tags.Offset(); |
| 888 | } |
| 889 | return false; |
| 890 | } |
| 891 | /*}}}*/ |
| 892 | // ListParser::LoadReleaseInfo - Load the release information /*{{{*/ |
| 893 | // --------------------------------------------------------------------- |
| 894 | /* */ |
| 895 | bool debListParser::LoadReleaseInfo(pkgCache::PkgFileIterator &FileI, |
| 896 | FileFd &File, string component) |
| 897 | { |
| 898 | // apt-secure does no longer download individual (per-section) Release |
| 899 | // file. to provide Component pinning we use the section name now |
| 900 | map_ptrloc const storage = WriteUniqString(component); |
| 901 | FileI->Component = storage; |
| 902 | |
| 903 | pkgTagFile TagFile(&File, File.Size()); |
| 904 | pkgTagSection Section; |
| 905 | if (_error->PendingError() == true || TagFile.Step(Section) == false) |
| 906 | return false; |
| 907 | |
| 908 | std::string data; |
| 909 | #define APT_INRELEASE(TAG, STORE) \ |
| 910 | data = Section.FindS(TAG); \ |
| 911 | if (data.empty() == false) \ |
| 912 | { \ |
| 913 | map_ptrloc const storage = WriteUniqString(data); \ |
| 914 | STORE = storage; \ |
| 915 | } |
| 916 | APT_INRELEASE("Suite", FileI->Archive) |
| 917 | APT_INRELEASE("Component", FileI->Component) |
| 918 | APT_INRELEASE("Version", FileI->Version) |
| 919 | APT_INRELEASE("Origin", FileI->Origin) |
| 920 | APT_INRELEASE("Codename", FileI->Codename) |
| 921 | APT_INRELEASE("Label", FileI->Label) |
| 922 | #undef APT_INRELEASE |
| 923 | Section.FindFlag("NotAutomatic", FileI->Flags, pkgCache::Flag::NotAutomatic); |
| 924 | Section.FindFlag("ButAutomaticUpgrades", FileI->Flags, pkgCache::Flag::ButAutomaticUpgrades); |
| 925 | |
| 926 | return !_error->PendingError(); |
| 927 | } |
| 928 | /*}}}*/ |
| 929 | // ListParser::GetPrio - Convert the priority from a string /*{{{*/ |
| 930 | // --------------------------------------------------------------------- |
| 931 | /* */ |
| 932 | unsigned char debListParser::GetPrio(string Str) |
| 933 | { |
| 934 | unsigned char Out; |
| 935 | if (GrabWord(Str,PrioList,Out) == false) |
| 936 | Out = pkgCache::State::Extra; |
| 937 | |
| 938 | return Out; |
| 939 | } |
| 940 | /*}}}*/ |
| 941 | #if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13) |
| 942 | bool debListParser::SameVersion(unsigned short const Hash, /*{{{*/ |
| 943 | pkgCache::VerIterator const &Ver) |
| 944 | { |
| 945 | if (pkgCacheGenerator::ListParser::SameVersion(Hash, Ver) == false) |
| 946 | return false; |
| 947 | // status file has no (Download)Size, but all others are fair game |
| 948 | // status file is parsed last, so the first version we encounter is |
| 949 | // probably also the version we have downloaded |
| 950 | unsigned long long const Size = Section.FindULL("Size"); |
| 951 | if (Size != 0 && Size != Ver->Size) |
| 952 | return false; |
| 953 | // available everywhere, but easier to check here than to include in VersionHash |
| 954 | unsigned char MultiArch = ParseMultiArch(false); |
| 955 | if (MultiArch != Ver->MultiArch) |
| 956 | return false; |
| 957 | // for all practical proposes (we can check): same version |
| 958 | return true; |
| 959 | } |
| 960 | /*}}}*/ |
| 961 | #endif |