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
  21 #include <fstream>
  22
  23 #include <apti18n.h>
  24                                                                         /*}}}*/
  25
  26 using namespace std;
  27
  28 // Global list of Items supported
  29 static  pkgSourceList::Type *ItmList[10];
  30 pkgSourceList::Type **pkgSourceList::Type::GlobalList = ItmList;
  31 unsigned long pkgSourceList::Type::GlobalListLen = 0;
  32
  33 // Type::Type - Constructor                                             /*{{{*/
  34 // ---------------------------------------------------------------------
  35 /* Link this to the global list of items*/
  36 pkgSourceList::Type::Type()
  37 {
  38    ItmList[GlobalListLen] = this;
  39    GlobalListLen++;
  40 }
  41                                                                         /*}}}*/
  42 // Type::GetType - Get a specific meta for a given type                 /*{{{*/
  43 // ---------------------------------------------------------------------
  44 /* */
  45 pkgSourceList::Type *pkgSourceList::Type::GetType(const char *Type)
  46 {
  47    for (unsigned I = 0; I != GlobalListLen; I++)
  48       if (strcmp(GlobalList[I]->Name,Type) == 0)
  49          return GlobalList[I];
  50    return 0;
  51 }
  52                                                                         /*}}}*/
  53 // Type::FixupURI - Normalize the URI and check it..                    /*{{{*/
  54 // ---------------------------------------------------------------------
  55 /* */
  56 bool pkgSourceList::Type::FixupURI(string &URI) const
  57 {
  58    if (URI.empty() == true)
  59       return false;
  60
  61    if (URI.find(':') == string::npos)
  62       return false;
  63
  64    URI = SubstVar(URI,"$(ARCH)",_config->Find("APT::Architecture"));
  65
  66    // Make sure that the URI is / postfixed
  67    if (URI[URI.size() - 1] != '/')
  68       URI += '/';
  69
  70    return true;
  71 }
  72                                                                         /*}}}*/
  73 // Type::ParseLine - Parse a single line                                /*{{{*/
  74 // ---------------------------------------------------------------------
  75 /* This is a generic one that is the 'usual' format for sources.list
  76    Weird types may override this. */
  77 bool pkgSourceList::Type::ParseLine(vector<metaIndex *> &List,
  78                                     const char *Buffer,
  79                                     unsigned long const &CurLine,
  80                                     string const &File) const
  81 {
  82    for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
  83
  84    // Parse option field if it exists
  85    // e.g.: [ option1=value1 option2=value2 ]
  86    map<string, string> Options;
  87    if (Buffer != 0 && Buffer[0] == '[')
  88    {
  89       ++Buffer; // ignore the [
  90       for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
  91       while (*Buffer != ']')
  92       {
  93          // get one option, e.g. option1=value1
  94          string option;
  95          if (ParseQuoteWord(Buffer,option) == false)
  96             return _error->Error(_("Malformed line %lu in source list %s ([option] unparseable)"),CurLine,File.c_str());
  97
  98          if (option.length() < 3)
  99             return _error->Error(_("Malformed line %lu in source list %s ([option] too short)"),CurLine,File.c_str());
 100
 101          // accept options even if the last has no space before the ]-end marker
 102          if (option.at(option.length()-1) == ']')
 103          {
 104             for (; *Buffer != ']'; --Buffer);
 105             option.resize(option.length()-1);
 106          }
 107
 108          size_t const needle = option.find('=');
 109          if (needle == string::npos)
 110             return _error->Error(_("Malformed line %lu in source list %s ([%s] is not an assignment)"),CurLine,File.c_str(), option.c_str());
 111
 112          string const key = string(option, 0, needle);
 113          string const value = string(option, needle + 1, option.length());
 114
 115          if (key.empty() == true)
 116             return _error->Error(_("Malformed line %lu in source list %s ([%s] has no key)"),CurLine,File.c_str(), option.c_str());
 117
 118          if (value.empty() == true)
 119             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());
 120
 121          Options[key] = value;
 122       }
 123       ++Buffer; // ignore the ]
 124       for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
 125    }
 126
 127    string URI;
 128    string Dist;
 129    string Section;
 130
 131    if (ParseQuoteWord(Buffer,URI) == false)
 132       return _error->Error(_("Malformed line %lu in source list %s (URI)"),CurLine,File.c_str());
 133    if (ParseQuoteWord(Buffer,Dist) == false)
 134       return _error->Error(_("Malformed line %lu in source list %s (dist)"),CurLine,File.c_str());
 135
 136    if (FixupURI(URI) == false)
 137       return _error->Error(_("Malformed line %lu in source list %s (URI parse)"),CurLine,File.c_str());
 138
 139    // Check for an absolute dists specification.
 140    if (Dist.empty() == false && Dist[Dist.size() - 1] == '/')
 141    {
 142       if (ParseQuoteWord(Buffer,Section) == true)
 143          return _error->Error(_("Malformed line %lu in source list %s (absolute dist)"),CurLine,File.c_str());
 144       Dist = SubstVar(Dist,"$(ARCH)",_config->Find("APT::Architecture"));
 145       return CreateItem(List, URI, Dist, Section, Options);
 146    }
 147
 148    // Grab the rest of the dists
 149    if (ParseQuoteWord(Buffer,Section) == false)
 150       return _error->Error(_("Malformed line %lu in source list %s (dist parse)"),CurLine,File.c_str());
 151
 152    do
 153    {
 154       if (CreateItem(List, URI, Dist, Section, Options) == false)
 155          return false;
 156    }
 157    while (ParseQuoteWord(Buffer,Section) == true);
 158
 159    return true;
 160 }
 161                                                                         /*}}}*/
 162
 163 // SourceList::pkgSourceList - Constructors                             /*{{{*/
 164 // ---------------------------------------------------------------------
 165 /* */
 166 pkgSourceList::pkgSourceList()
 167 {
 168 }
 169
 170 pkgSourceList::pkgSourceList(string File)
 171 {
 172    Read(File);
 173 }
 174                                                                         /*}}}*/
 175 // SourceList::~pkgSourceList - Destructor                              /*{{{*/
 176 // ---------------------------------------------------------------------
 177 /* */
 178 pkgSourceList::~pkgSourceList()
 179 {
 180    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 181       delete *I;
 182 }
 183                                                                         /*}}}*/
 184                                                                         /*}}}*/
 185 // SourceList::ReadMainList - Read the main source list from etc        /*{{{*/
 186 // ---------------------------------------------------------------------
 187 /* */
 188 bool pkgSourceList::ReadMainList()
 189 {
 190    // CNC:2003-03-03 - Multiple sources list support.
 191    bool Res = true;
 192 #if 0
 193    Res = ReadVendors();
 194    if (Res == false)
 195       return false;
 196 #endif
 197
 198    Reset();
 199    // CNC:2003-11-28 - Entries in sources.list have priority over
 200    //                  entries in sources.list.d.
 201    string Main = _config->FindFile("Dir::Etc::sourcelist");
 202    string Parts = _config->FindDir("Dir::Etc::sourceparts");
 203
 204    if (RealFileExists(Main) == true)
 205       Res &= ReadAppend(Main);
 206    else if (DirectoryExists(Parts) == false)
 207       // Only warn if there are no sources.list.d.
 208       _error->WarningE("DirectoryExists", _("Unable to read %s"), Parts.c_str());
 209
 210    if (DirectoryExists(Parts) == true)
 211       Res &= ReadSourceDir(Parts);
 212    else if (RealFileExists(Main) == false)
 213       // Only warn if there is no sources.list file.
 214       _error->WarningE("RealFileExists", _("Unable to read %s"), Main.c_str());
 215
 216    return Res;
 217 }
 218                                                                         /*}}}*/
 219 // CNC:2003-03-03 - Needed to preserve backwards compatibility.
 220 // SourceList::Reset - Clear the sourcelist contents                    /*{{{*/
 221 // ---------------------------------------------------------------------
 222 /* */
 223 void pkgSourceList::Reset()
 224 {
 225    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 226       delete *I;
 227    SrcList.erase(SrcList.begin(),SrcList.end());
 228 }
 229                                                                         /*}}}*/
 230 // CNC:2003-03-03 - Function moved to ReadAppend() and Reset().
 231 // SourceList::Read - Parse the sourcelist file                         /*{{{*/
 232 // ---------------------------------------------------------------------
 233 /* */
 234 bool pkgSourceList::Read(string File)
 235 {
 236    Reset();
 237    return ReadAppend(File);
 238 }
 239                                                                         /*}}}*/
 240 // SourceList::ReadAppend - Parse a sourcelist file                     /*{{{*/
 241 // ---------------------------------------------------------------------
 242 /* */
 243 bool pkgSourceList::ReadAppend(string File)
 244 {
 245    // Open the stream for reading
 246    ifstream F(File.c_str(),ios::in /*| ios::nocreate*/);
 247    if (!F != 0)
 248       return _error->Errno("ifstream::ifstream",_("Opening %s"),File.c_str());
 249
 250 #if 0 // Now Reset() does this.
 251    for (const_iterator I = SrcList.begin(); I != SrcList.end(); I++)
 252       delete *I;
 253    SrcList.erase(SrcList.begin(),SrcList.end());
 254 #endif
 255    // CNC:2003-12-10 - 300 is too short.
 256    char Buffer[1024];
 257
 258    int CurLine = 0;
 259    while (F.eof() == false)
 260    {
 261       F.getline(Buffer,sizeof(Buffer));
 262       CurLine++;
 263       _strtabexpand(Buffer,sizeof(Buffer));
 264       if (F.fail() && !F.eof())
 265          return _error->Error(_("Line %u too long in source list %s."),
 266                               CurLine,File.c_str());
 267
 268
 269       char *I;
 270       // CNC:2003-02-20 - Do not break if '#' is inside [].
 271       for (I = Buffer; *I != 0 && *I != '#'; I++)
 272          if (*I == '[')
 273             I = strchr(I + 1, ']');
 274       *I = 0;
 275
 276       const char *C = _strstrip(Buffer);
 277
 278       // Comment or blank
 279       if (C[0] == '#' || C[0] == 0)
 280          continue;
 281
 282       // Grok it
 283       string LineType;
 284       if (ParseQuoteWord(C,LineType) == false)
 285          return _error->Error(_("Malformed line %u in source list %s (type)"),CurLine,File.c_str());
 286
 287       Type *Parse = Type::GetType(LineType.c_str());
 288       if (Parse == 0)
 289          return _error->Error(_("Type '%s' is not known on line %u in source list %s"),LineType.c_str(),CurLine,File.c_str());
 290
 291       if (Parse->ParseLine(SrcList, C, CurLine, File) == false)
 292          return false;
 293    }
 294    return true;
 295 }
 296                                                                         /*}}}*/
 297 // SourceList::FindIndex - Get the index associated with a file         /*{{{*/
 298 // ---------------------------------------------------------------------
 299 /* */
 300 bool pkgSourceList::FindIndex(pkgCache::PkgFileIterator File,
 301                               pkgIndexFile *&Found) const
 302 {
 303    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 304    {
 305       vector<pkgIndexFile *> *Indexes = (*I)->GetIndexFiles();
 306       for (vector<pkgIndexFile *>::const_iterator J = Indexes->begin();
 307            J != Indexes->end(); ++J)
 308       {
 309          if ((*J)->FindInCache(*File.Cache()) == File)
 310          {
 311             Found = (*J);
 312             return true;
 313          }
 314       }
 315    }
 316
 317    return false;
 318 }
 319                                                                         /*}}}*/
 320 // SourceList::GetIndexes - Load the index files into the downloader    /*{{{*/
 321 // ---------------------------------------------------------------------
 322 /* */
 323 bool pkgSourceList::GetIndexes(pkgAcquire *Owner, bool GetAll) const
 324 {
 325    for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
 326       if ((*I)->GetIndexes(Owner,GetAll) == false)
 327          return false;
 328    return true;
 329 }
 330                                                                         /*}}}*/
 331 // CNC:2003-03-03 - By Anton V. Denisov <avd@altlinux.org>.
 332 // SourceList::ReadSourceDir - Read a directory with sources files
 333 // Based on ReadConfigDir()                                             /*{{{*/
 334 // ---------------------------------------------------------------------
 335 /* */
 336 bool pkgSourceList::ReadSourceDir(string Dir)
 337 {
 338    vector<string> const List = GetListOfFilesInDir(Dir, "list", true);
 339
 340    // Read the files
 341    for (vector<string>::const_iterator I = List.begin(); I != List.end(); ++I)
 342       if (ReadAppend(*I) == false)
 343          return false;
 344    return true;
 345
 346 }
 347                                                                         /*}}}*/
 348 // GetLastModified()                                            /*{{{*/
 349 // ---------------------------------------------------------------------
 350 /* */
 351 time_t pkgSourceList::GetLastModifiedTime()
 352 {
 353    vector<string> List;
 354
 355    string Main = _config->FindFile("Dir::Etc::sourcelist");
 356    string Parts = _config->FindDir("Dir::Etc::sourceparts");
 357
 358    // go over the parts
 359    if (DirectoryExists(Parts) == true)
 360       List = GetListOfFilesInDir(Parts, "list", true);
 361
 362    // calculate the time
 363    time_t mtime_sources = GetModificationTime(Main);
 364    for (vector<string>::const_iterator I = List.begin(); I != List.end(); ++I)
 365       mtime_sources = std::max(mtime_sources, GetModificationTime(*I));
 366
 367    return mtime_sources;
 368 }
 369                                                                         /*}}}*/
 370