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