apt-pkg/sourcelist.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: sourcelist.cc,v 1.3 2002/08/15 20:51:37 niemeyer Exp $
   4 /* ######################################################################
   5
   6    List of Sources
   7
   8    ##################################################################### */
   9                                                                         /*}}}*/
  10 // Include Files                                                        /*{{{*/
  11 #include<config.h>
  12
  13 #include <apt-pkg/sourcelist.h>
  14 #include <apt-pkg/error.h>
  15 #include <apt-pkg/fileutl.h>
  16 #include <apt-pkg/strutl.h>
  17 #include <apt-pkg/configuration.h>
  18 #include <apt-pkg/metaindex.h>
  19 #include <apt-pkg/indexfile.h>
  20 #include <apt-pkg/tagfile.h>
  21 #include <apt-pkg/pkgcache.h>
  22 #include <apt-pkg/cacheiterators.h>
  23
  24 #include <ctype.h>
  25 #include <stddef.h>
  26 #include <time.h>
  27 #include <cstring>
  28 #include <map>
  29 #include <string>
  30 #include <vector>
  31 #include <fstream>
  32 #include <algorithm>
  33
  34 #include <apti18n.h>
  35                                                                         /*}}}*/
  36
  37 using namespace std;
  38
  39 // Global list of Items supported
  40 static pkgSourceList::Type *ItmList[10];
  41 pkgSourceList::Type **pkgSourceList::Type::GlobalList = ItmList;
  42 unsigned long pkgSourceList::Type::GlobalListLen = 0;
  43
  44 // Type::Type - Constructor                                             /*{{{*/
  45 // ---------------------------------------------------------------------
  46 /* Link this to the global list of items*/
  47 pkgSourceList::Type::Type(char const * const pName, char const * const pLabel) : Name(pName), Label(pLabel)
  48 {
  49    ItmList[GlobalListLen] = this;
  50    ++GlobalListLen;
  51 }
  52 pkgSourceList::Type::~Type() {}
  53                                                                         /*}}}*/
  54 // Type::GetType - Get a specific meta for a given type                 /*{{{*/
  55 // ---------------------------------------------------------------------
  56 /* */
  57 pkgSourceList::Type *pkgSourceList::Type::GetType(const char *Type)
  58 {
  59    for (unsigned I = 0; I != GlobalListLen; ++I)
  60       if (strcmp(GlobalList[I]->Name,Type) == 0)
  61          return GlobalList[I];
  62    return 0;
  63 }
  64                                                                         /*}}}*/
  65 // Type::FixupURI - Normalize the URI and check it..                    /*{{{*/
  66 // ---------------------------------------------------------------------
  67 /* */
  68 bool pkgSourceList::Type::FixupURI(string &URI) const
  69 {
  70    if (URI.empty() == true)
  71       return false;
  72
  73    if (URI.find(':') == string::npos)
  74       return false;
  75
  76    URI = SubstVar(URI,"$(ARCH)",_config->Find("APT::Architecture"));
  77
  78    // Make sure that the URI is / postfixed
  79    if (URI[URI.size() - 1] != '/')
  80       URI += '/';
  81
  82    return true;
  83 }
  84                                                                         /*}}}*/
  85 bool pkgSourceList::Type::ParseStanza(vector<metaIndex *> &List,        /*{{{*/
  86                                       pkgTagSection &Tags,
  87                                       unsigned int const i,
  88                                       FileFd &Fd)
  89 {
  90    map<string, string> Options;
  91
  92    string Enabled = Tags.FindS("Enabled");
  93    if (Enabled.empty() == false && StringToBool(Enabled) == false)
  94       return true;
  95
  96    std::map<char const * const, char const * const> mapping;
  97 #define APT_PLUSMINUS(X, Y) \
  98    mapping.insert(std::make_pair(X, Y)); \
  99    mapping.insert(std::make_pair(X "Add", Y "+")); \
 100    mapping.insert(std::make_pair(X "Remove", Y "-"))
 101    APT_PLUSMINUS("Architectures", "arch");
 102    APT_PLUSMINUS("Languages", "lang");
 103    APT_PLUSMINUS("Targets", "target");
 104 #undef APT_PLUSMINUS
 105    mapping.insert(std::make_pair("Trusted", "trusted"));
 106
 107    for (std::map<char const * const, char const * const>::const_iterator m = mapping.begin(); m != mapping.end(); ++m)
 108       if (Tags.Exists(m->first))
 109       {
 110          // for deb822 the " " is the delimiter, but the backend expects ","
 111          std::string option = Tags.FindS(m->first);
 112          std::replace(option.begin(), option.end(), ' ', ',');
 113          Options[m->second] = option;
 114       }
 115
 116    // now create one item per suite/section
 117    string Suite = Tags.FindS("Suites");
 118    Suite = SubstVar(Suite,"$(ARCH)",_config->Find("APT::Architecture"));
 119    string const Component = Tags.FindS("Components");
 120    string const URIS = Tags.FindS("URIs");
 121
 122    std::vector<std::string> const list_uris = VectorizeString(URIS, ' ');
 123    std::vector<std::string> const list_suite = VectorizeString(Suite, ' ');
 124    std::vector<std::string> const list_comp = VectorizeString(Component, ' ');
 125
 126    if (list_uris.empty())
 127       // TRANSLATOR: %u is a line number, the first %s is a filename of a file with the extension "second %s" and the third %s is a unique identifier for bugreports
 128       return _error->Error(_("Malformed entry %u in %s file %s (%s)"), i, "sources", Fd.Name().c_str(), "URI");
 129
 130    for (std::vector<std::string>::const_iterator U = list_uris.begin();
 131         U != list_uris.end(); ++U)
 132    {
 133       std::string URI = *U;
 134       if (U->empty() || FixupURI(URI) == false)
 135          return _error->Error(_("Malformed entry %u in %s file %s (%s)"), i, "sources", Fd.Name().c_str(), "URI parse");
 136
 137       if (list_suite.empty())
 138          return _error->Error(_("Malformed entry %u in %s file %s (%s)"), i, "sources", Fd.Name().c_str(), "Suite");
 139
 140       for (std::vector<std::string>::const_iterator S = list_suite.begin();
 141            S != list_suite.end(); ++S)
 142       {
 143          if (S->empty() == false && (*S)[S->size() - 1] == '/')
 144          {
 145             if (list_comp.empty() == false)
 146                return _error->Error(_("Malformed entry %u in %s file %s (%s)"), i, "sources", Fd.Name().c_str(), "absolute Suite Component");
 147             if (CreateItem(List, URI, *S, "", Options) == false)
 148                return false;
 149          }
 150          else
 151          {
 152             if (list_comp.empty())
 153                return _error->Error(_("Malformed entry %u in %s file %s (%s)"), i, "sources", Fd.Name().c_str(), "Component");
 154
 155             for (std::vector<std::string>::const_iterator C = list_comp.begin();
 156                   C != list_comp.end(); ++C)
 157             {
 158                if (CreateItem(List, URI, *S, *C, Options) == false)
 159                {
 160                   return false;
 161                }
 162             }
 163          }
 164       }
 165    }
 166    return true;
 167 }
 168                                                                         /*}}}*/
 169 // Type::ParseLine - Parse a single line                                /*{{{*/
 170 // ---------------------------------------------------------------------
 171 /* This is a generic one that is the 'usual' format for sources.list
 172    Weird types may override this. */
 173 bool pkgSourceList::Type::ParseLine(vector<metaIndex *> &List,
 174                                     const char *Buffer,
 175                                     unsigned int const CurLine,
 176                                     string const &File) const
 177 {
 178    for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
 179
 180    // Parse option field if it exists
 181    // e.g.: [ option1=value1 option2=value2 ]
 182    map<string, string> Options;
 183    if (Buffer != 0 && Buffer[0] == '[')
 184    {
 185       ++Buffer; // ignore the [
 186       for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
 187       while (*Buffer != ']')
 188       {
 189          // get one option, e.g. option1=value1
 190          string option;
 191          if (ParseQuoteWord(Buffer,option) == false)
 192             return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "[option] unparseable");
 193
 194          if (option.length() < 3)
 195             return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "[option] too short");
 196
 197          // accept options even if the last has no space before the ]-end marker
 198          if (option.at(option.length()-1) == ']')
 199          {
 200             for (; *Buffer != ']'; --Buffer);
 201             option.resize(option.length()-1);
 202          }
 203
 204          size_t const needle = option.find('=');
 205          if (needle == string::npos)
 206             return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "[option] not assignment");
 207
 208          string const key = string(option, 0, needle);
 209          string const value = string(option, needle + 1, option.length());
 210
 211          if (key.empty() == true)
 212             return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "[option] no key");
 213
 214          if (value.empty() == true)
 215             return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "[option] no value");
 216
 217          Options[key] = value;
 218       }
 219       ++Buffer; // ignore the ]
 220       for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
 221    }
 222
 223    string URI;
 224    string Dist;
 225    string Section;
 226
 227    if (ParseQuoteWord(Buffer,URI) == false)
 228       return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "URI");
 229    if (ParseQuoteWord(Buffer,Dist) == false)
 230       return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "Suite");
 231
 232    if (FixupURI(URI) == false)
 233       return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "URI parse");
 234
 235    // Check for an absolute dists specification.
 236    if (Dist.empty() == false && Dist[Dist.size() - 1] == '/')
 237    {
 238       if (ParseQuoteWord(Buffer,Section) == true)
 239          return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "absolute Suite Component");
 240       Dist = SubstVar(Dist,"$(ARCH)",_config->Find("APT::Architecture"));
 241       return CreateItem(List, URI, Dist, Section, Options);
 242    }
 243
 244    // Grab the rest of the dists
 245    if (ParseQuoteWord(Buffer,Section) == false)
 246       return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "Component");
 247
 248    do
 249    {
 250       if (CreateItem(List, URI, Dist, Section, Options) == false)
 251          return false;
 252    }
 253    while (ParseQuoteWord(Buffer,Section) == true);
 254
 255    return true;
 256 }
 257                                                                         /*}}}*/
 258 // SourceList::pkgSourceList - Constructors                             /*{{{*/
 259 // ---------------------------------------------------------------------
 260 /* */
 261 pkgSourceList::pkgSourceList() : d(NULL)
 262 {
 263 }
 264                                                                         /*}}}*/
 265 // SourceList::~pkgSourceList - Destructor                              /*{{{*/
 266 // ---------------------------------------------------------------------
 267 /* */
 268 pkgSourceList::~pkgSourceList()
 269 {
 270    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 271       delete *I;
 272 }
 273                                                                         /*}}}*/
 274 // SourceList::ReadMainList - Read the main source list from etc        /*{{{*/
 275 // ---------------------------------------------------------------------
 276 /* */
 277 bool pkgSourceList::ReadMainList()
 278 {
 279    // CNC:2003-03-03 - Multiple sources list support.
 280    bool Res = true;
 281 #if 0
 282    Res = ReadVendors();
 283    if (Res == false)
 284       return false;
 285 #endif
 286
 287    Reset();
 288    // CNC:2003-11-28 - Entries in sources.list have priority over
 289    //                  entries in sources.list.d.
 290    string Main = _config->FindFile("Dir::Etc::sourcelist");
 291    string Parts = _config->FindDir("Dir::Etc::sourceparts");
 292
 293    if (RealFileExists(Main) == true)
 294       Res &= ReadAppend(Main);
 295    else if (DirectoryExists(Parts) == false)
 296       // Only warn if there are no sources.list.d.
 297       _error->WarningE("DirectoryExists", _("Unable to read %s"), Parts.c_str());
 298
 299    if (DirectoryExists(Parts) == true)
 300       Res &= ReadSourceDir(Parts);
 301    else if (RealFileExists(Main) == false)
 302       // Only warn if there is no sources.list file.
 303       _error->WarningE("RealFileExists", _("Unable to read %s"), Main.c_str());
 304
 305    return Res;
 306 }
 307                                                                         /*}}}*/
 308 // SourceList::Reset - Clear the sourcelist contents                    /*{{{*/
 309 // ---------------------------------------------------------------------
 310 /* */
 311 void pkgSourceList::Reset()
 312 {
 313    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 314       delete *I;
 315    SrcList.erase(SrcList.begin(),SrcList.end());
 316 }
 317                                                                         /*}}}*/
 318 // SourceList::Read - Parse the sourcelist file                         /*{{{*/
 319 // ---------------------------------------------------------------------
 320 /* */
 321 bool pkgSourceList::Read(string const &File)
 322 {
 323    Reset();
 324    return ReadAppend(File);
 325 }
 326                                                                         /*}}}*/
 327 // SourceList::ReadAppend - Parse a sourcelist file                     /*{{{*/
 328 // ---------------------------------------------------------------------
 329 /* */
 330 bool pkgSourceList::ReadAppend(string const &File)
 331 {
 332    if (flExtension(File) == "sources")
 333       return ParseFileDeb822(File);
 334    else
 335       return ParseFileOldStyle(File);
 336 }
 337
 338 // SourceList::ReadFileOldStyle - Read Traditional style sources.list   /*{{{*/
 339 // ---------------------------------------------------------------------
 340 /* */
 341 bool pkgSourceList::ParseFileOldStyle(std::string const &File)
 342 {
 343    // Open the stream for reading
 344    ifstream F(File.c_str(),ios::in /*| ios::nocreate*/);
 345    if (F.fail() == true)
 346       return _error->Errno("ifstream::ifstream",_("Opening %s"),File.c_str());
 347
 348    std::string Buffer;
 349    for (unsigned int CurLine = 1; std::getline(F, Buffer); ++CurLine)
 350    {
 351       // remove comments
 352       size_t curpos = 0;
 353       while ((curpos = Buffer.find('#', curpos)) != std::string::npos)
 354       {
 355          size_t const openbrackets = std::count(Buffer.begin(), Buffer.begin() + curpos, '[');
 356          size_t const closedbrackets = std::count(Buffer.begin(), Buffer.begin() + curpos, ']');
 357          if (openbrackets > closedbrackets)
 358          {
 359             // a # in an option, unlikely, but oh well, it was supported so stick to it
 360             ++curpos;
 361             continue;
 362          }
 363          Buffer.erase(curpos);
 364          break;
 365       }
 366       // remove spaces before/after
 367       curpos = Buffer.find_first_not_of(" \t\r");
 368       if (curpos != 0)
 369          Buffer.erase(0, curpos);
 370       curpos = Buffer.find_last_not_of(" \t\r");
 371       if (curpos != std::string::npos)
 372          Buffer.erase(curpos + 1);
 373
 374       if (Buffer.empty())
 375          continue;
 376
 377       // Grok it
 378       std::string const LineType = Buffer.substr(0, Buffer.find(' '));
 379       if (LineType.empty() || LineType == Buffer)
 380          return _error->Error(_("Malformed line %u in source list %s (type)"),CurLine,File.c_str());
 381
 382       Type *Parse = Type::GetType(LineType.c_str());
 383       if (Parse == 0)
 384          return _error->Error(_("Type '%s' is not known on line %u in source list %s"),LineType.c_str(),CurLine,File.c_str());
 385
 386       if (Parse->ParseLine(SrcList, Buffer.c_str() + LineType.length(), CurLine, File) == false)
 387          return false;
 388    }
 389    return true;
 390 }
 391                                                                         /*}}}*/
 392 // SourceList::ParseFileDeb822 - Parse deb822 style sources.list        /*{{{*/
 393 // ---------------------------------------------------------------------
 394 /* Returns: the number of stanzas parsed*/
 395 bool pkgSourceList::ParseFileDeb822(string const &File)
 396 {
 397    pkgUserTagSection Tags;
 398    unsigned int i = 1;
 399
 400    // see if we can read the file
 401    FileFd Fd(File, FileFd::ReadOnly);
 402    pkgTagFile Sources(&Fd);
 403    if (_error->PendingError() == true)
 404       return _error->Error(_("Malformed stanza %u in source list %s (type)"),i,File.c_str());
 405
 406    // read step by step
 407    while (Sources.Step(Tags) == true)
 408    {
 409       if(Tags.Exists("Types") == false)
 410          return _error->Error(_("Malformed stanza %u in source list %s (type)"),i,File.c_str());
 411
 412       string const types = Tags.FindS("Types");
 413       std::vector<std::string> const list_types = VectorizeString(types, ' ');
 414       for (std::vector<std::string>::const_iterator I = list_types.begin();
 415         I != list_types.end(); ++I)
 416       {
 417          Type *Parse = Type::GetType((*I).c_str());
 418          if (Parse == 0)
 419          {
 420             _error->Error(_("Type '%s' is not known on stanza %u in source list %s"), (*I).c_str(),i,Fd.Name().c_str());
 421             return false;
 422          }
 423
 424          if (!Parse->ParseStanza(SrcList, Tags, i, Fd))
 425             return false;
 426
 427          ++i;
 428       }
 429    }
 430    return true;
 431 }
 432                                                                         /*}}}*/
 433 // SourceList::FindIndex - Get the index associated with a file         /*{{{*/
 434 // ---------------------------------------------------------------------
 435 /* */
 436 bool pkgSourceList::FindIndex(pkgCache::PkgFileIterator File,
 437                               pkgIndexFile *&Found) const
 438 {
 439    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 440    {
 441       vector<pkgIndexFile *> *Indexes = (*I)->GetIndexFiles();
 442       for (vector<pkgIndexFile *>::const_iterator J = Indexes->begin();
 443            J != Indexes->end(); ++J)
 444       {
 445          if ((*J)->FindInCache(*File.Cache()) == File)
 446          {
 447             Found = (*J);
 448             return true;
 449          }
 450       }
 451    }
 452
 453    return false;
 454 }
 455                                                                         /*}}}*/
 456 // SourceList::GetIndexes - Load the index files into the downloader    /*{{{*/
 457 // ---------------------------------------------------------------------
 458 /* */
 459 bool pkgSourceList::GetIndexes(pkgAcquire *Owner, bool GetAll) const
 460 {
 461    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 462       if ((*I)->GetIndexes(Owner,GetAll) == false)
 463          return false;
 464    return true;
 465 }
 466                                                                         /*}}}*/
 467 // CNC:2003-03-03 - By Anton V. Denisov <avd@altlinux.org>.
 468 // SourceList::ReadSourceDir - Read a directory with sources files
 469 // Based on ReadConfigDir()                                             /*{{{*/
 470 // ---------------------------------------------------------------------
 471 /* */
 472 bool pkgSourceList::ReadSourceDir(string const &Dir)
 473 {
 474    std::vector<std::string> ext;
 475    ext.push_back("list");
 476    ext.push_back("sources");
 477    std::vector<std::string> const List = GetListOfFilesInDir(Dir, ext, true);
 478
 479    // Read the files
 480    for (vector<string>::const_iterator I = List.begin(); I != List.end(); ++I)
 481       if (ReadAppend(*I) == false)
 482          return false;
 483    return true;
 484
 485 }
 486                                                                         /*}}}*/
 487 // GetLastModified()                                            /*{{{*/
 488 // ---------------------------------------------------------------------
 489 /* */
 490 time_t pkgSourceList::GetLastModifiedTime()
 491 {
 492    vector<string> List;
 493
 494    string Main = _config->FindFile("Dir::Etc::sourcelist");
 495    string Parts = _config->FindDir("Dir::Etc::sourceparts");
 496
 497    // go over the parts
 498    if (DirectoryExists(Parts) == true)
 499       List = GetListOfFilesInDir(Parts, "list", true);
 500
 501    // calculate the time
 502    time_t mtime_sources = GetModificationTime(Main);
 503    for (vector<string>::const_iterator I = List.begin(); I != List.end(); ++I)
 504       mtime_sources = std::max(mtime_sources, GetModificationTime(*I));
 505
 506    return mtime_sources;
 507 }
 508                                                                         /*}}}*/
 509