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
  22 #include <fstream>
  23
  24 #include <apti18n.h>
  25                                                                         /*}}}*/
  26
  27 using namespace std;
  28
  29 // Global list of Items supported
  30 static  pkgSourceList::Type *ItmList[10];
  31 pkgSourceList::Type **pkgSourceList::Type::GlobalList = ItmList;
  32 unsigned long pkgSourceList::Type::GlobalListLen = 0;
  33
  34 // Type::Type - Constructor                                             /*{{{*/
  35 // ---------------------------------------------------------------------
  36 /* Link this to the global list of items*/
  37 pkgSourceList::Type::Type() : Name(NULL), Label(NULL)
  38 {
  39    ItmList[GlobalListLen] = this;
  40    GlobalListLen++;
  41 }
  42                                                                         /*}}}*/
  43 // Type::GetType - Get a specific meta for a given type                 /*{{{*/
  44 // ---------------------------------------------------------------------
  45 /* */
  46 pkgSourceList::Type *pkgSourceList::Type::GetType(const char *Type)
  47 {
  48    for (unsigned I = 0; I != GlobalListLen; I++)
  49       if (strcmp(GlobalList[I]->Name,Type) == 0)
  50          return GlobalList[I];
  51    return 0;
  52 }
  53                                                                         /*}}}*/
  54 // Type::FixupURI - Normalize the URI and check it..                    /*{{{*/
  55 // ---------------------------------------------------------------------
  56 /* */
  57 bool pkgSourceList::Type::FixupURI(string &URI) const
  58 {
  59    if (URI.empty() == true)
  60       return false;
  61
  62    if (URI.find(':') == string::npos)
  63       return false;
  64
  65    URI = SubstVar(URI,"$(ARCH)",_config->Find("APT::Architecture"));
  66
  67    // Make sure that the URI is / postfixed
  68    if (URI[URI.size() - 1] != '/')
  69       URI += '/';
  70
  71    return true;
  72 }
  73                                                                         /*}}}*/
  74 bool pkgSourceList::Type::ParseStanza(vector<metaIndex *> &List,
  75                                       pkgTagSection &Tags,
  76                                       int i,
  77                                       FileFd &Fd)
  78 {
  79    map<string, string> Options;
  80
  81    string Enabled = Tags.FindS("Enabled");
  82    if (Enabled.size() > 0 && StringToBool(Enabled) == false)
  83       return true;
  84
  85    // Define external/internal options
  86    const char* option_deb822[] = {
  87       "Architectures", "Architectures-Add", "Architectures-Remove", "Trusted",
  88    };
  89    const char* option_internal[] = {
  90       "arch", "arch+", "arch-", "trusted",
  91    };
  92    for (unsigned int j=0; j < sizeof(option_deb822)/sizeof(char*); j++)
  93       if (Tags.Exists(option_deb822[j]))
  94          Options[option_internal[j]] = Tags.FindS(option_deb822[j]);
  95
  96    // now create one item per suite/section
  97    string Suite = Tags.FindS("Suites");
  98    Suite = SubstVar(Suite,"$(ARCH)",_config->Find("APT::Architecture"));
  99    string const Section = Tags.FindS("Sections");
 100    string URIS = Tags.FindS("URIs");
 101
 102    std::vector<std::string> list_uris = StringSplit(URIS, " ");
 103    std::vector<std::string> list_dist = StringSplit(Suite, " ");
 104    std::vector<std::string> list_section = StringSplit(Section, " ");
 105
 106    for (std::vector<std::string>::const_iterator U = list_uris.begin();
 107         U != list_uris.end(); U++)
 108    {
 109       std::string URI = (*U);
 110       if (!FixupURI(URI))
 111       {
 112          _error->Error(_("Malformed stanza %u in source list %s (URI parse)"),i,Fd.Name().c_str());
 113          return false;
 114       }
 115
 116       for (std::vector<std::string>::const_iterator I = list_dist.begin();
 117            I != list_dist.end(); I++)
 118       {
 119          for (std::vector<std::string>::const_iterator J = list_section.begin();
 120               J != list_section.end(); J++)
 121          {
 122             if (CreateItem(List, URI, (*I), (*J), Options) == false)
 123             {
 124                return false;
 125             }
 126          }
 127       }
 128    }
 129    return true;
 130 }
 131
 132 // Type::ParseLine - Parse a single line                                /*{{{*/
 133 // ---------------------------------------------------------------------
 134 /* This is a generic one that is the 'usual' format for sources.list
 135    Weird types may override this. */
 136 bool pkgSourceList::Type::ParseLine(vector<metaIndex *> &List,
 137                                     const char *Buffer,
 138                                     unsigned long const &CurLine,
 139                                     string const &File) const
 140 {
 141    for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
 142
 143    // Parse option field if it exists
 144    // e.g.: [ option1=value1 option2=value2 ]
 145    map<string, string> Options;
 146    if (Buffer != 0 && Buffer[0] == '[')
 147    {
 148       ++Buffer; // ignore the [
 149       for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
 150       while (*Buffer != ']')
 151       {
 152          // get one option, e.g. option1=value1
 153          string option;
 154          if (ParseQuoteWord(Buffer,option) == false)
 155             return _error->Error(_("Malformed line %lu in source list %s ([option] unparseable)"),CurLine,File.c_str());
 156
 157          if (option.length() < 3)
 158             return _error->Error(_("Malformed line %lu in source list %s ([option] too short)"),CurLine,File.c_str());
 159
 160          // accept options even if the last has no space before the ]-end marker
 161          if (option.at(option.length()-1) == ']')
 162          {
 163             for (; *Buffer != ']'; --Buffer);
 164             option.resize(option.length()-1);
 165          }
 166
 167          size_t const needle = option.find('=');
 168          if (needle == string::npos)
 169             return _error->Error(_("Malformed line %lu in source list %s ([%s] is not an assignment)"),CurLine,File.c_str(), option.c_str());
 170
 171          string const key = string(option, 0, needle);
 172          string const value = string(option, needle + 1, option.length());
 173
 174          if (key.empty() == true)
 175             return _error->Error(_("Malformed line %lu in source list %s ([%s] has no key)"),CurLine,File.c_str(), option.c_str());
 176
 177          if (value.empty() == true)
 178             return _error->Error(_("Malformed line %lu in source list %s ([%s] key %s has no value)"),CurLine,File.c_str(),option.c_str(),key.c_str());
 179
 180          Options[key] = value;
 181       }
 182       ++Buffer; // ignore the ]
 183       for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
 184    }
 185
 186    string URI;
 187    string Dist;
 188    string Section;
 189
 190    if (ParseQuoteWord(Buffer,URI) == false)
 191       return _error->Error(_("Malformed line %lu in source list %s (URI)"),CurLine,File.c_str());
 192    if (ParseQuoteWord(Buffer,Dist) == false)
 193       return _error->Error(_("Malformed line %lu in source list %s (dist)"),CurLine,File.c_str());
 194
 195    if (FixupURI(URI) == false)
 196       return _error->Error(_("Malformed line %lu in source list %s (URI parse)"),CurLine,File.c_str());
 197
 198    // Check for an absolute dists specification.
 199    if (Dist.empty() == false && Dist[Dist.size() - 1] == '/')
 200    {
 201       if (ParseQuoteWord(Buffer,Section) == true)
 202          return _error->Error(_("Malformed line %lu in source list %s (absolute dist)"),CurLine,File.c_str());
 203       Dist = SubstVar(Dist,"$(ARCH)",_config->Find("APT::Architecture"));
 204       return CreateItem(List, URI, Dist, Section, Options);
 205    }
 206
 207    // Grab the rest of the dists
 208    if (ParseQuoteWord(Buffer,Section) == false)
 209       return _error->Error(_("Malformed line %lu in source list %s (dist parse)"),CurLine,File.c_str());
 210
 211    do
 212    {
 213       if (CreateItem(List, URI, Dist, Section, Options) == false)
 214          return false;
 215    }
 216    while (ParseQuoteWord(Buffer,Section) == true);
 217
 218    return true;
 219 }
 220                                                                         /*}}}*/
 221 // SourceList::pkgSourceList - Constructors                             /*{{{*/
 222 // ---------------------------------------------------------------------
 223 /* */
 224 pkgSourceList::pkgSourceList()
 225 {
 226 }
 227
 228 pkgSourceList::pkgSourceList(string File)
 229 {
 230    Read(File);
 231 }
 232                                                                         /*}}}*/
 233 // SourceList::~pkgSourceList - Destructor                              /*{{{*/
 234 // ---------------------------------------------------------------------
 235 /* */
 236 pkgSourceList::~pkgSourceList()
 237 {
 238    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 239       delete *I;
 240 }
 241                                                                         /*}}}*/
 242 // SourceList::ReadMainList - Read the main source list from etc        /*{{{*/
 243 // ---------------------------------------------------------------------
 244 /* */
 245 bool pkgSourceList::ReadMainList()
 246 {
 247    // CNC:2003-03-03 - Multiple sources list support.
 248    bool Res = true;
 249 #if 0
 250    Res = ReadVendors();
 251    if (Res == false)
 252       return false;
 253 #endif
 254
 255    Reset();
 256    // CNC:2003-11-28 - Entries in sources.list have priority over
 257    //                  entries in sources.list.d.
 258    string Main = _config->FindFile("Dir::Etc::sourcelist");
 259    string Parts = _config->FindDir("Dir::Etc::sourceparts");
 260
 261    if (RealFileExists(Main) == true)
 262       Res &= ReadAppend(Main);
 263    else if (DirectoryExists(Parts) == false)
 264       // Only warn if there are no sources.list.d.
 265       _error->WarningE("DirectoryExists", _("Unable to read %s"), Parts.c_str());
 266
 267    if (DirectoryExists(Parts) == true)
 268       Res &= ReadSourceDir(Parts);
 269    else if (RealFileExists(Main) == false)
 270       // Only warn if there is no sources.list file.
 271       _error->WarningE("RealFileExists", _("Unable to read %s"), Main.c_str());
 272
 273    return Res;
 274 }
 275                                                                         /*}}}*/
 276 // SourceList::Reset - Clear the sourcelist contents                    /*{{{*/
 277 // ---------------------------------------------------------------------
 278 /* */
 279 void pkgSourceList::Reset()
 280 {
 281    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 282       delete *I;
 283    SrcList.erase(SrcList.begin(),SrcList.end());
 284 }
 285                                                                         /*}}}*/
 286 // SourceList::Read - Parse the sourcelist file                         /*{{{*/
 287 // ---------------------------------------------------------------------
 288 /* */
 289 bool pkgSourceList::Read(string File)
 290 {
 291    Reset();
 292    return ReadAppend(File);
 293 }
 294                                                                         /*}}}*/
 295 // SourceList::ReadAppend - Parse a sourcelist file                     /*{{{*/
 296 // ---------------------------------------------------------------------
 297 /* */
 298 bool pkgSourceList::ReadAppend(string File)
 299 {
 300    if (_config->FindB("APT::Sources::Use-Deb822", true) == true)
 301    {
 302       int lines_parsed =ParseFileDeb822(File);
 303       if (lines_parsed < 0)
 304          return false;
 305       else if (lines_parsed > 0)
 306          return true;
 307       // no lines parsed  ... fall through and use old style parser
 308    }
 309    return ParseFileOldStyle(File);
 310 }
 311
 312 // SourceList::ReadFileOldStyle - Read Traditional style sources.list   /*{{{*/
 313 // ---------------------------------------------------------------------
 314 /* */
 315 bool pkgSourceList::ParseFileOldStyle(string File)
 316 {
 317    // Open the stream for reading
 318    ifstream F(File.c_str(),ios::in /*| ios::nocreate*/);
 319    if (!F != 0)
 320       return _error->Errno("ifstream::ifstream",_("Opening %s"),File.c_str());
 321
 322    // CNC:2003-12-10 - 300 is too short.
 323    char Buffer[1024];
 324
 325    int CurLine = 0;
 326    while (F.eof() == false)
 327    {
 328       F.getline(Buffer,sizeof(Buffer));
 329       CurLine++;
 330       _strtabexpand(Buffer,sizeof(Buffer));
 331       if (F.fail() && !F.eof())
 332          return _error->Error(_("Line %u too long in source list %s."),
 333                               CurLine,File.c_str());
 334
 335
 336       char *I;
 337       // CNC:2003-02-20 - Do not break if '#' is inside [].
 338       for (I = Buffer; *I != 0 && *I != '#'; I++)
 339          if (*I == '[')
 340          {
 341             char *b_end = strchr(I + 1, ']');
 342             if (b_end != NULL)
 343                I = b_end;
 344          }
 345       *I = 0;
 346
 347       const char *C = _strstrip(Buffer);
 348
 349       // Comment or blank
 350       if (C[0] == '#' || C[0] == 0)
 351          continue;
 352
 353       // Grok it
 354       string LineType;
 355       if (ParseQuoteWord(C,LineType) == false)
 356          return _error->Error(_("Malformed line %u in source list %s (type)"),CurLine,File.c_str());
 357
 358       Type *Parse = Type::GetType(LineType.c_str());
 359       if (Parse == 0)
 360          return _error->Error(_("Type '%s' is not known on line %u in source list %s"),LineType.c_str(),CurLine,File.c_str());
 361
 362       if (Parse->ParseLine(SrcList, C, CurLine, File) == false)
 363          return false;
 364    }
 365    return true;
 366 }
 367                                                                         /*}}}*/
 368 // SourceList::ParseFileDeb822 - Parse deb822 style sources.list        /*{{{*/
 369 // ---------------------------------------------------------------------
 370 /* Returns: the number of stanzas parsed*/
 371 int pkgSourceList::ParseFileDeb822(string File)
 372 {
 373    pkgTagSection Tags;
 374    unsigned int i=0;
 375
 376    // see if we can read the file
 377    _error->PushToStack();
 378    FileFd Fd(File, FileFd::ReadOnly);
 379    pkgTagFile Sources(&Fd);
 380    if (_error->PendingError() == true)
 381    {
 382       _error->RevertToStack();
 383       return 0;
 384    }
 385    _error->MergeWithStack();
 386
 387    // read step by step
 388    while (Sources.Step(Tags) == true)
 389    {
 390       if(!Tags.Exists("Type"))
 391          continue;
 392
 393       string const type = Tags.FindS("Type");
 394       Type *Parse = Type::GetType(type.c_str());
 395       if (Parse == 0)
 396       {
 397          _error->Error(_("Type '%s' is not known on stanza %u in source list %s"),type.c_str(),i,Fd.Name().c_str());
 398          return -1;
 399       }
 400
 401       if (!Parse->ParseStanza(SrcList, Tags, i, Fd))
 402          return -1;
 403
 404       i++;
 405    }
 406
 407    // we are done, return the number of stanzas read
 408    return i;
 409 }
 410                                                                         /*}}}*/
 411 // SourceList::FindIndex - Get the index associated with a file         /*{{{*/
 412 // ---------------------------------------------------------------------
 413 /* */
 414 bool pkgSourceList::FindIndex(pkgCache::PkgFileIterator File,
 415                               pkgIndexFile *&Found) const
 416 {
 417    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 418    {
 419       vector<pkgIndexFile *> *Indexes = (*I)->GetIndexFiles();
 420       for (vector<pkgIndexFile *>::const_iterator J = Indexes->begin();
 421            J != Indexes->end(); ++J)
 422       {
 423          if ((*J)->FindInCache(*File.Cache()) == File)
 424          {
 425             Found = (*J);
 426             return true;
 427          }
 428       }
 429    }
 430
 431    return false;
 432 }
 433                                                                         /*}}}*/
 434 // SourceList::GetIndexes - Load the index files into the downloader    /*{{{*/
 435 // ---------------------------------------------------------------------
 436 /* */
 437 bool pkgSourceList::GetIndexes(pkgAcquire *Owner, bool GetAll) const
 438 {
 439    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 440       if ((*I)->GetIndexes(Owner,GetAll) == false)
 441          return false;
 442    return true;
 443 }
 444                                                                         /*}}}*/
 445 // CNC:2003-03-03 - By Anton V. Denisov <avd@altlinux.org>.
 446 // SourceList::ReadSourceDir - Read a directory with sources files
 447 // Based on ReadConfigDir()                                             /*{{{*/
 448 // ---------------------------------------------------------------------
 449 /* */
 450 bool pkgSourceList::ReadSourceDir(string Dir)
 451 {
 452    vector<string> const List = GetListOfFilesInDir(Dir, "list", true);
 453
 454    // Read the files
 455    for (vector<string>::const_iterator I = List.begin(); I != List.end(); ++I)
 456       if (ReadAppend(*I) == false)
 457          return false;
 458    return true;
 459
 460 }
 461                                                                         /*}}}*/
 462 // GetLastModified()                                            /*{{{*/
 463 // ---------------------------------------------------------------------
 464 /* */
 465 time_t pkgSourceList::GetLastModifiedTime()
 466 {
 467    vector<string> List;
 468
 469    string Main = _config->FindFile("Dir::Etc::sourcelist");
 470    string Parts = _config->FindDir("Dir::Etc::sourceparts");
 471
 472    // go over the parts
 473    if (DirectoryExists(Parts) == true)
 474       List = GetListOfFilesInDir(Parts, "list", true);
 475
 476    // calculate the time
 477    time_t mtime_sources = GetModificationTime(Main);
 478    for (vector<string>::const_iterator I = List.begin(); I != List.end(); ++I)
 479       mtime_sources = std::max(mtime_sources, GetModificationTime(*I));
 480
 481    return mtime_sources;
 482 }
 483                                                                         /*}}}*/
 484