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