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 <apt-pkg/sourcelist.h>
  12 #include <apt-pkg/error.h>
  13 #include <apt-pkg/fileutl.h>
  14 #include <apt-pkg/strutl.h>
  15 #include <apt-pkg/configuration.h>
  16
  17 #include <apti18n.h>
  18
  19 #include <fstream>
  20                                                                         /*}}}*/
  21
  22 using namespace std;
  23
  24 // Global list of Items supported
  25 static  pkgSourceList::Type *ItmList[10];
  26 pkgSourceList::Type **pkgSourceList::Type::GlobalList = ItmList;
  27 unsigned long pkgSourceList::Type::GlobalListLen = 0;
  28
  29 // Type::Type - Constructor                                             /*{{{*/
  30 // ---------------------------------------------------------------------
  31 /* Link this to the global list of items*/
  32 pkgSourceList::Type::Type()
  33 {
  34    ItmList[GlobalListLen] = this;
  35    GlobalListLen++;
  36 }
  37                                                                         /*}}}*/
  38 // Type::GetType - Get a specific meta for a given type                 /*{{{*/
  39 // ---------------------------------------------------------------------
  40 /* */
  41 pkgSourceList::Type *pkgSourceList::Type::GetType(const char *Type)
  42 {
  43    for (unsigned I = 0; I != GlobalListLen; I++)
  44       if (strcmp(GlobalList[I]->Name,Type) == 0)
  45          return GlobalList[I];
  46    return 0;
  47 }
  48                                                                         /*}}}*/
  49 // Type::FixupURI - Normalize the URI and check it..                    /*{{{*/
  50 // ---------------------------------------------------------------------
  51 /* */
  52 bool pkgSourceList::Type::FixupURI(string &URI) const
  53 {
  54    if (URI.empty() == true)
  55       return false;
  56
  57    if (URI.find(':') == string::npos)
  58       return false;
  59
  60    URI = SubstVar(URI,"$(ARCH)",_config->Find("APT::Architecture"));
  61
  62    // Make sure that the URI is / postfixed
  63    if (URI[URI.size() - 1] != '/')
  64       URI += '/';
  65
  66    return true;
  67 }
  68                                                                         /*}}}*/
  69 // Type::ParseLine - Parse a single line                                /*{{{*/
  70 // ---------------------------------------------------------------------
  71 /* This is a generic one that is the 'usual' format for sources.list
  72    Weird types may override this. */
  73 bool pkgSourceList::Type::ParseLine(vector<metaIndex *> &List,
  74                                     const char *Buffer,
  75                                     unsigned long const &CurLine,
  76                                     string const &File) const
  77 {
  78    for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
  79
  80    // Parse option field if it exists
  81    // e.g.: [ option1=value1 option2=value2 ]
  82    map<string, string> Options;
  83    if (Buffer != 0 && Buffer[0] == '[')
  84    {
  85       ++Buffer; // ignore the [
  86       for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
  87       while (*Buffer != ']')
  88       {
  89          // get one option, e.g. option1=value1
  90          string option;
  91          if (ParseQuoteWord(Buffer,option) == false)
  92             return _error->Error(_("Malformed line %lu in source list %s ([option] unparseable)"),CurLine,File.c_str());
  93
  94          if (option.length() < 3)
  95             return _error->Error(_("Malformed line %lu in source list %s ([option] too short)"),CurLine,File.c_str());
  96
  97          // accept options even if the last has no space before the ]-end marker
  98          if (option.at(option.length()-1) == ']')
  99          {
 100             for (; *Buffer != ']'; --Buffer);
 101             option.resize(option.length()-1);
 102          }
 103
 104          size_t const needle = option.find('=');
 105          if (needle == string::npos)
 106             return _error->Error(_("Malformed line %lu in source list %s ([%s] is not an assignment)"),CurLine,File.c_str(), option.c_str());
 107
 108          string const key = string(option, 0, needle);
 109          string const value = string(option, needle + 1, option.length());
 110
 111          if (key.empty() == true)
 112             return _error->Error(_("Malformed line %lu in source list %s ([%s] has no key)"),CurLine,File.c_str(), option.c_str());
 113
 114          if (value.empty() == true)
 115             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());
 116
 117          Options[key] = value;
 118       }
 119       ++Buffer; // ignore the ]
 120       for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
 121    }
 122
 123    string URI;
 124    string Dist;
 125    string Section;
 126
 127    if (ParseQuoteWord(Buffer,URI) == false)
 128       return _error->Error(_("Malformed line %lu in source list %s (URI)"),CurLine,File.c_str());
 129    if (ParseQuoteWord(Buffer,Dist) == false)
 130       return _error->Error(_("Malformed line %lu in source list %s (dist)"),CurLine,File.c_str());
 131
 132    if (FixupURI(URI) == false)
 133       return _error->Error(_("Malformed line %lu in source list %s (URI parse)"),CurLine,File.c_str());
 134
 135    // Check for an absolute dists specification.
 136    if (Dist.empty() == false && Dist[Dist.size() - 1] == '/')
 137    {
 138       if (ParseQuoteWord(Buffer,Section) == true)
 139          return _error->Error(_("Malformed line %lu in source list %s (absolute dist)"),CurLine,File.c_str());
 140       Dist = SubstVar(Dist,"$(ARCH)",_config->Find("APT::Architecture"));
 141       return CreateItem(List, URI, Dist, Section, Options);
 142    }
 143
 144    // Grab the rest of the dists
 145    if (ParseQuoteWord(Buffer,Section) == false)
 146       return _error->Error(_("Malformed line %lu in source list %s (dist parse)"),CurLine,File.c_str());
 147
 148    do
 149    {
 150       if (CreateItem(List, URI, Dist, Section, Options) == false)
 151          return false;
 152    }
 153    while (ParseQuoteWord(Buffer,Section) == true);
 154
 155    return true;
 156 }
 157                                                                         /*}}}*/
 158
 159 // SourceList::pkgSourceList - Constructors                             /*{{{*/
 160 // ---------------------------------------------------------------------
 161 /* */
 162 pkgSourceList::pkgSourceList()
 163 {
 164 }
 165
 166 pkgSourceList::pkgSourceList(string File)
 167 {
 168    Read(File);
 169 }
 170                                                                         /*}}}*/
 171 // SourceList::~pkgSourceList - Destructor                              /*{{{*/
 172 // ---------------------------------------------------------------------
 173 /* */
 174 pkgSourceList::~pkgSourceList()
 175 {
 176    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 177       delete *I;
 178 }
 179                                                                         /*}}}*/
 180                                                                         /*}}}*/
 181 // SourceList::ReadMainList - Read the main source list from etc        /*{{{*/
 182 // ---------------------------------------------------------------------
 183 /* */
 184 bool pkgSourceList::ReadMainList()
 185 {
 186    // CNC:2003-03-03 - Multiple sources list support.
 187    bool Res = true;
 188 #if 0
 189    Res = ReadVendors();
 190    if (Res == false)
 191       return false;
 192 #endif
 193
 194    Reset();
 195    // CNC:2003-11-28 - Entries in sources.list have priority over
 196    //                  entries in sources.list.d.
 197    string Main = _config->FindFile("Dir::Etc::sourcelist");
 198    string Parts = _config->FindDir("Dir::Etc::sourceparts");
 199
 200    if (RealFileExists(Main) == true)
 201       Res &= ReadAppend(Main);
 202    else if (DirectoryExists(Parts) == false)
 203       // Only warn if there are no sources.list.d.
 204       _error->WarningE("DirectoryExists", _("Unable to read %s"), Parts.c_str());
 205
 206    if (DirectoryExists(Parts) == true)
 207       Res &= ReadSourceDir(Parts);
 208    else if (RealFileExists(Main) == false)
 209       // Only warn if there is no sources.list file.
 210       _error->WarningE("RealFileExists", _("Unable to read %s"), Main.c_str());
 211
 212    return Res;
 213 }
 214                                                                         /*}}}*/
 215 // CNC:2003-03-03 - Needed to preserve backwards compatibility.
 216 // SourceList::Reset - Clear the sourcelist contents                    /*{{{*/
 217 // ---------------------------------------------------------------------
 218 /* */
 219 void pkgSourceList::Reset()
 220 {
 221    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 222       delete *I;
 223    SrcList.erase(SrcList.begin(),SrcList.end());
 224 }
 225                                                                         /*}}}*/
 226 // CNC:2003-03-03 - Function moved to ReadAppend() and Reset().
 227 // SourceList::Read - Parse the sourcelist file                         /*{{{*/
 228 // ---------------------------------------------------------------------
 229 /* */
 230 bool pkgSourceList::Read(string File)
 231 {
 232    Reset();
 233    return ReadAppend(File);
 234 }
 235                                                                         /*}}}*/
 236 // SourceList::ReadAppend - Parse a sourcelist file                     /*{{{*/
 237 // ---------------------------------------------------------------------
 238 /* */
 239 bool pkgSourceList::ReadAppend(string File)
 240 {
 241    // Open the stream for reading
 242    ifstream F(File.c_str(),ios::in /*| ios::nocreate*/);
 243    if (!F != 0)
 244       return _error->Errno("ifstream::ifstream",_("Opening %s"),File.c_str());
 245
 246 #if 0 // Now Reset() does this.
 247    for (const_iterator I = SrcList.begin(); I != SrcList.end(); I++)
 248       delete *I;
 249    SrcList.erase(SrcList.begin(),SrcList.end());
 250 #endif
 251    // CNC:2003-12-10 - 300 is too short.
 252    char Buffer[1024];
 253
 254    int CurLine = 0;
 255    while (F.eof() == false)
 256    {
 257       F.getline(Buffer,sizeof(Buffer));
 258       CurLine++;
 259       _strtabexpand(Buffer,sizeof(Buffer));
 260       if (F.fail() && !F.eof())
 261          return _error->Error(_("Line %u too long in source list %s."),
 262                               CurLine,File.c_str());
 263
 264
 265       char *I;
 266       // CNC:2003-02-20 - Do not break if '#' is inside [].
 267       for (I = Buffer; *I != 0 && *I != '#'; I++)
 268          if (*I == '[')
 269             I = strchr(I + 1, ']');
 270       *I = 0;
 271
 272       const char *C = _strstrip(Buffer);
 273
 274       // Comment or blank
 275       if (C[0] == '#' || C[0] == 0)
 276          continue;
 277
 278       // Grok it
 279       string LineType;
 280       if (ParseQuoteWord(C,LineType) == false)
 281          return _error->Error(_("Malformed line %u in source list %s (type)"),CurLine,File.c_str());
 282
 283       Type *Parse = Type::GetType(LineType.c_str());
 284       if (Parse == 0)
 285          return _error->Error(_("Type '%s' is not known on line %u in source list %s"),LineType.c_str(),CurLine,File.c_str());
 286
 287       if (Parse->ParseLine(SrcList, C, CurLine, File) == false)
 288          return false;
 289    }
 290    return true;
 291 }
 292                                                                         /*}}}*/
 293 // SourceList::FindIndex - Get the index associated with a file         /*{{{*/
 294 // ---------------------------------------------------------------------
 295 /* */
 296 bool pkgSourceList::FindIndex(pkgCache::PkgFileIterator File,
 297                               pkgIndexFile *&Found) const
 298 {
 299    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 300    {
 301       vector<pkgIndexFile *> *Indexes = (*I)->GetIndexFiles();
 302       for (vector<pkgIndexFile *>::const_iterator J = Indexes->begin();
 303            J != Indexes->end(); ++J)
 304       {
 305          if ((*J)->FindInCache(*File.Cache()) == File)
 306          {
 307             Found = (*J);
 308             return true;
 309          }
 310       }
 311    }
 312
 313    return false;
 314 }
 315                                                                         /*}}}*/
 316 // SourceList::GetIndexes - Load the index files into the downloader    /*{{{*/
 317 // ---------------------------------------------------------------------
 318 /* */
 319 bool pkgSourceList::GetIndexes(pkgAcquire *Owner, bool GetAll) const
 320 {
 321    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 322       if ((*I)->GetIndexes(Owner,GetAll) == false)
 323          return false;
 324    return true;
 325 }
 326                                                                         /*}}}*/
 327 // CNC:2003-03-03 - By Anton V. Denisov <avd@altlinux.org>.
 328 // SourceList::ReadSourceDir - Read a directory with sources files
 329 // Based on ReadConfigDir()                                             /*{{{*/
 330 // ---------------------------------------------------------------------
 331 /* */
 332 bool pkgSourceList::ReadSourceDir(string Dir)
 333 {
 334    vector<string> const List = GetListOfFilesInDir(Dir, "list", true);
 335
 336    // Read the files
 337    for (vector<string>::const_iterator I = List.begin(); I != List.end(); ++I)
 338       if (ReadAppend(*I) == false)
 339          return false;
 340    return true;
 341
 342 }
 343                                                                         /*}}}*/
 344 // GetLastModified()                                            /*{{{*/
 345 // ---------------------------------------------------------------------
 346 /* */
 347 time_t pkgSourceList::GetLastModifiedTime()
 348 {
 349    // go over the parts
 350    string Main = _config->FindFile("Dir::Etc::sourcelist");
 351    string Parts = _config->FindDir("Dir::Etc::sourceparts");
 352    vector<string> const List = GetListOfFilesInDir(Parts, "list", true);
 353
 354    // calculate the time
 355    time_t mtime_sources = GetModificationTime(Main);
 356    for (vector<string>::const_iterator I = List.begin(); I != List.end(); ++I)
 357       mtime_sources = std::max(mtime_sources, GetModificationTime(*I));
 358
 359    return mtime_sources;
 360 }
 361                                                                         /*}}}*/
 362