apt-pkg/aptconfiguration.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 /* ######################################################################
   4
   5    Provide access methods to various configuration settings,
   6    setup defaults and returns validate settings.
   7
   8    ##################################################################### */
   9                                                                         /*}}}*/
  10 // Include Files                                                        /*{{{*/
  11 #include <config.h>
  12
  13 #include <apt-pkg/aptconfiguration.h>
  14 #include <apt-pkg/configuration.h>
  15 #include <apt-pkg/error.h>
  16 #include <apt-pkg/fileutl.h>
  17 #include <apt-pkg/macros.h>
  18 #include <apt-pkg/strutl.h>
  19
  20 #include <dirent.h>
  21 #include <stdio.h>
  22 #include <fcntl.h>
  23 #include <ctype.h>
  24 #include <stddef.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <unistd.h>
  28 #include <algorithm>
  29 #include <string>
  30 #include <vector>
  31
  32 #include <apti18n.h>
  33                                                                         /*}}}*/
  34 namespace APT {
  35 // getCompressionTypes - Return Vector of usable compressiontypes       /*{{{*/
  36 // ---------------------------------------------------------------------
  37 /* return a vector of compression types in the preferred order. */
  38 std::vector<std::string>
  39 const Configuration::getCompressionTypes(bool const &Cached) {
  40         static std::vector<std::string> types;
  41         if (types.empty() == false) {
  42                 if (Cached == true)
  43                         return types;
  44                 else
  45                         types.clear();
  46         }
  47
  48         // setup the defaults for the compressiontypes => method mapping
  49         _config->CndSet("Acquire::CompressionTypes::bz2","bzip2");
  50         _config->CndSet("Acquire::CompressionTypes::xz","xz");
  51         _config->CndSet("Acquire::CompressionTypes::lzma","lzma");
  52         _config->CndSet("Acquire::CompressionTypes::gz","gzip");
  53
  54         setDefaultConfigurationForCompressors();
  55         std::vector<APT::Configuration::Compressor> const compressors = getCompressors();
  56
  57         // load the order setting into our vector
  58         std::vector<std::string> const order = _config->FindVector("Acquire::CompressionTypes::Order");
  59         for (std::vector<std::string>::const_iterator o = order.begin();
  60              o != order.end(); ++o) {
  61                 if ((*o).empty() == true)
  62                         continue;
  63                 // ignore types we have no method ready to use
  64                 std::string const method = std::string("Acquire::CompressionTypes::").append(*o);
  65                 if (_config->Exists(method) == false)
  66                         continue;
  67                 // ignore types we have no app ready to use
  68                 std::string const app = _config->Find(method);
  69                 std::vector<APT::Configuration::Compressor>::const_iterator c = compressors.begin();
  70                 for (; c != compressors.end(); ++c)
  71                         if (c->Name == app)
  72                                 break;
  73                 if (c == compressors.end())
  74                         continue;
  75                 types.push_back(*o);
  76         }
  77
  78         // move again over the option tree to add all missing compression types
  79         ::Configuration::Item const *Types = _config->Tree("Acquire::CompressionTypes");
  80         if (Types != 0)
  81                 Types = Types->Child;
  82
  83         for (; Types != 0; Types = Types->Next) {
  84                 if (Types->Tag == "Order" || Types->Tag.empty() == true)
  85                         continue;
  86                 // ignore types we already have in the vector
  87                 if (std::find(types.begin(),types.end(),Types->Tag) != types.end())
  88                         continue;
  89                 // ignore types we have no app ready to use
  90                 std::vector<APT::Configuration::Compressor>::const_iterator c = compressors.begin();
  91                 for (; c != compressors.end(); ++c)
  92                         if (c->Name == Types->Value)
  93                                 break;
  94                 if (c == compressors.end())
  95                         continue;
  96                 types.push_back(Types->Tag);
  97         }
  98
  99         // add the special "uncompressed" type
 100         if (std::find(types.begin(), types.end(), "uncompressed") == types.end())
 101         {
 102                 std::string const uncompr = _config->FindFile("Dir::Bin::uncompressed", "");
 103                 if (uncompr.empty() == true || FileExists(uncompr) == true)
 104                         types.push_back("uncompressed");
 105         }
 106
 107         return types;
 108 }
 109                                                                         /*}}}*/
 110 // GetLanguages - Return Vector of Language Codes                       /*{{{*/
 111 // ---------------------------------------------------------------------
 112 /* return a vector of language codes in the preferred order.
 113    the special word "environment" will be replaced with the long and the short
 114    code of the local settings and it will be insured that this will not add
 115    duplicates. So in an german local the setting "environment, de_DE, en, de"
 116    will result in "de_DE, de, en".
 117    The special word "none" is the stopcode for the not-All code vector */
 118 std::vector<std::string> const Configuration::getLanguages(bool const &All,
 119                                 bool const &Cached, char const ** const Locale) {
 120         using std::string;
 121
 122         // The detection is boring and has a lot of cornercases,
 123         // so we cache the results to calculated it only once.
 124         std::vector<string> static allCodes;
 125         std::vector<string> static codes;
 126
 127         // we have something in the cache
 128         if (codes.empty() == false || allCodes.empty() == false) {
 129                 if (Cached == true) {
 130                         if(All == true && allCodes.empty() == false)
 131                                 return allCodes;
 132                         else
 133                                 return codes;
 134                 } else {
 135                         allCodes.clear();
 136                         codes.clear();
 137                 }
 138         }
 139
 140         // Include all Language codes we have a Translation file for in /var/lib/apt/lists
 141         // so they will be all included in the Cache.
 142         std::vector<string> builtin;
 143         DIR *D = opendir(_config->FindDir("Dir::State::lists").c_str());
 144         if (D != NULL) {
 145                 builtin.push_back("none");
 146                 for (struct dirent *Ent = readdir(D); Ent != 0; Ent = readdir(D)) {
 147                         string const name = SubstVar(Ent->d_name, "%5f", "_");
 148                         size_t const foundDash = name.rfind("-");
 149                         size_t const foundUnderscore = name.rfind("_", foundDash);
 150                         if (foundDash == string::npos || foundUnderscore == string::npos ||
 151                             foundDash <= foundUnderscore ||
 152                             name.substr(foundUnderscore+1, foundDash-(foundUnderscore+1)) != "Translation")
 153                                 continue;
 154                         string const c = name.substr(foundDash+1);
 155                         if (unlikely(c.empty() == true) || c == "en")
 156                                 continue;
 157                         // Skip unusual files, like backups or that alike
 158                         string::const_iterator s = c.begin();
 159                         for (;s != c.end(); ++s) {
 160                                 if (isalpha(*s) == 0 && *s != '_')
 161                                         break;
 162                         }
 163                         if (s != c.end())
 164                                 continue;
 165                         if (std::find(builtin.begin(), builtin.end(), c) != builtin.end())
 166                                 continue;
 167                         builtin.push_back(c);
 168                 }
 169                 closedir(D);
 170         }
 171
 172         // FIXME: Remove support for the old APT::Acquire::Translation
 173         // it was undocumented and so it should be not very widthly used
 174         string const oldAcquire = _config->Find("APT::Acquire::Translation","");
 175         if (oldAcquire.empty() == false && oldAcquire != "environment") {
 176                 // TRANSLATORS: the two %s are APT configuration options
 177                 _error->Notice("Option '%s' is deprecated. Please use '%s' instead, see 'man 5 apt.conf' for details.",
 178                                 "APT::Acquire::Translation", "Acquire::Languages");
 179                 if (oldAcquire != "none")
 180                         codes.push_back(oldAcquire);
 181                 codes.push_back("en");
 182                 allCodes = codes;
 183                 for (std::vector<string>::const_iterator b = builtin.begin();
 184                      b != builtin.end(); ++b)
 185                         if (std::find(allCodes.begin(), allCodes.end(), *b) == allCodes.end())
 186                                 allCodes.push_back(*b);
 187                 if (All == true)
 188                         return allCodes;
 189                 else
 190                         return codes;
 191         }
 192
 193         // get the environment language codes: LC_MESSAGES (and later LANGUAGE)
 194         // we extract both, a long and a short code and then we will
 195         // check if we actually need both (rare) or if the short is enough
 196         string const envMsg = string(Locale == 0 ? std::setlocale(LC_MESSAGES, NULL) : *Locale);
 197         size_t const lenShort = (envMsg.find('_') != string::npos) ? envMsg.find('_') : 2;
 198         size_t const lenLong = (envMsg.find_first_of(".@") != string::npos) ? envMsg.find_first_of(".@") : (lenShort + 3);
 199
 200         string const envLong = envMsg.substr(0,lenLong);
 201         string const envShort = envLong.substr(0,lenShort);
 202
 203         // It is very likely we will need the environment codes later,
 204         // so let us generate them now from LC_MESSAGES and LANGUAGE
 205         std::vector<string> environment;
 206         if (envShort != "C") {
 207                 // take care of LC_MESSAGES
 208                 if (envLong != envShort)
 209                         environment.push_back(envLong);
 210                 environment.push_back(envShort);
 211                 // take care of LANGUAGE
 212                 const char *language_env = getenv("LANGUAGE") == 0 ? "" : getenv("LANGUAGE");
 213                 string envLang = Locale == 0 ? language_env : *(Locale+1);
 214                 if (envLang.empty() == false) {
 215                         std::vector<string> env = VectorizeString(envLang,':');
 216                         short addedLangs = 0; // add a maximum of 3 fallbacks from the environment
 217                         for (std::vector<string>::const_iterator e = env.begin();
 218                              e != env.end() && addedLangs < 3; ++e) {
 219                                 if (unlikely(e->empty() == true) || *e == "en")
 220                                         continue;
 221                                 if (*e == envLong || *e == envShort)
 222                                         continue;
 223                                 if (std::find(environment.begin(), environment.end(), *e) != environment.end())
 224                                         continue;
 225                                 ++addedLangs;
 226                                 environment.push_back(*e);
 227                         }
 228                 }
 229         } else {
 230                 // cornercase: LANG=C, so we use only "en" Translation
 231                 environment.push_back("en");
 232         }
 233
 234         std::vector<string> const lang = _config->FindVector("Acquire::Languages", "environment,en");
 235         // the configs define the order, so add the environment
 236         // then needed and ensure the codes are not listed twice.
 237         bool noneSeen = false;
 238         for (std::vector<string>::const_iterator l = lang.begin();
 239              l != lang.end(); ++l) {
 240                 if (*l == "environment") {
 241                         for (std::vector<string>::const_iterator e = environment.begin();
 242                              e != environment.end(); ++e) {
 243                                 if (std::find(allCodes.begin(), allCodes.end(), *e) != allCodes.end())
 244                                         continue;
 245                                 if (noneSeen == false)
 246                                         codes.push_back(*e);
 247                                 allCodes.push_back(*e);
 248                         }
 249                         continue;
 250                 } else if (*l == "none") {
 251                         noneSeen = true;
 252                         continue;
 253                 } else if (std::find(allCodes.begin(), allCodes.end(), *l) != allCodes.end())
 254                         continue;
 255
 256                 if (noneSeen == false)
 257                         codes.push_back(*l);
 258                 allCodes.push_back(*l);
 259         }
 260
 261         if (allCodes.empty() == false) {
 262                 for (std::vector<string>::const_iterator b = builtin.begin();
 263                      b != builtin.end(); ++b)
 264                         if (std::find(allCodes.begin(), allCodes.end(), *b) == allCodes.end())
 265                                 allCodes.push_back(*b);
 266         } else {
 267                 // "none" was forced
 268                 allCodes.push_back("none");
 269         }
 270
 271         if (All == true)
 272                 return allCodes;
 273         else
 274                 return codes;
 275 }
 276                                                                         /*}}}*/
 277 // checkLanguage - are we interested in the given Language?             /*{{{*/
 278 bool Configuration::checkLanguage(std::string Lang, bool const All) {
 279         // the empty Language is always interesting as it is the original
 280         if (Lang.empty() == true)
 281                 return true;
 282         // filenames are encoded, so undo this
 283         Lang = SubstVar(Lang, "%5f", "_");
 284         std::vector<std::string> const langs = getLanguages(All, true);
 285         return (std::find(langs.begin(), langs.end(), Lang) != langs.end());
 286 }
 287                                                                         /*}}}*/
 288 // getArchitectures - Return Vector of preferred Architectures          /*{{{*/
 289 std::vector<std::string> const Configuration::getArchitectures(bool const &Cached) {
 290         using std::string;
 291
 292         std::vector<string> static archs;
 293         if (likely(Cached == true) && archs.empty() == false)
 294                 return archs;
 295
 296         string const arch = _config->Find("APT::Architecture");
 297         archs = _config->FindVector("APT::Architectures");
 298
 299         if (unlikely(arch.empty() == true))
 300                 return archs;
 301
 302         // FIXME: It is a bit unclean to have debian specific code here…
 303         if (archs.empty() == true) {
 304                 archs.push_back(arch);
 305
 306                 // Generate the base argument list for dpkg
 307                 std::vector<const char *> Args;
 308                 string Tmp = _config->Find("Dir::Bin::dpkg","dpkg");
 309                 {
 310                         string const dpkgChrootDir = _config->FindDir("DPkg::Chroot-Directory", "/");
 311                         size_t dpkgChrootLen = dpkgChrootDir.length();
 312                         if (dpkgChrootDir != "/" && Tmp.find(dpkgChrootDir) == 0) {
 313                                 if (dpkgChrootDir[dpkgChrootLen - 1] == '/')
 314                                         --dpkgChrootLen;
 315                                 Tmp = Tmp.substr(dpkgChrootLen);
 316                         }
 317                 }
 318                 Args.push_back(Tmp.c_str());
 319
 320                 // Stick in any custom dpkg options
 321                 ::Configuration::Item const *Opts = _config->Tree("DPkg::Options");
 322                 if (Opts != 0) {
 323                         Opts = Opts->Child;
 324                         for (; Opts != 0; Opts = Opts->Next)
 325                         {
 326                                 if (Opts->Value.empty() == true)
 327                                         continue;
 328                                 Args.push_back(Opts->Value.c_str());
 329                         }
 330                 }
 331
 332                 Args.push_back("--print-foreign-architectures");
 333                 Args.push_back(NULL);
 334
 335                 int external[2] = {-1, -1};
 336                 if (pipe(external) != 0)
 337                 {
 338                         _error->WarningE("getArchitecture", "Can't create IPC pipe for dpkg --print-foreign-architectures");
 339                         return archs;
 340                 }
 341
 342                 pid_t dpkgMultiArch = ExecFork();
 343                 if (dpkgMultiArch == 0) {
 344                         close(external[0]);
 345                         std::string const chrootDir = _config->FindDir("DPkg::Chroot-Directory");
 346                         int const nullfd = open("/dev/null", O_RDONLY);
 347                         dup2(nullfd, STDIN_FILENO);
 348                         dup2(external[1], STDOUT_FILENO);
 349                         dup2(nullfd, STDERR_FILENO);
 350                         if (chrootDir != "/" && chroot(chrootDir.c_str()) != 0 && chdir("/") != 0)
 351                                 _error->WarningE("getArchitecture", "Couldn't chroot into %s for dpkg --print-foreign-architectures", chrootDir.c_str());
 352                         execvp(Args[0], (char**) &Args[0]);
 353                         _error->WarningE("getArchitecture", "Can't detect foreign architectures supported by dpkg!");
 354                         _exit(100);
 355                 }
 356                 close(external[1]);
 357
 358                 FILE *dpkg = fdopen(external[0], "r");
 359                 if(dpkg != NULL) {
 360                         char buf[1024];
 361                         while (fgets(buf, sizeof(buf), dpkg) != NULL) {
 362                                 char* arch = strtok(buf, " ");
 363                                 while (arch != NULL) {
 364                                         for (; isspace(*arch) != 0; ++arch);
 365                                         if (arch[0] != '\0') {
 366                                                 char const* archend = arch;
 367                                                 for (; isspace(*archend) == 0 && *archend != '\0'; ++archend);
 368                                                 string a(arch, (archend - arch));
 369                                                 if (std::find(archs.begin(), archs.end(), a) == archs.end())
 370                                                         archs.push_back(a);
 371                                         }
 372                                         arch = strtok(NULL, " ");
 373                                 }
 374                         }
 375                         fclose(dpkg);
 376                 }
 377                 ExecWait(dpkgMultiArch, "dpkg --print-foreign-architectures", true);
 378                 return archs;
 379         }
 380
 381         if (archs.empty() == true ||
 382             std::find(archs.begin(), archs.end(), arch) == archs.end())
 383                 archs.insert(archs.begin(), arch);
 384
 385         // erase duplicates and empty strings
 386         for (std::vector<string>::reverse_iterator a = archs.rbegin();
 387              a != archs.rend(); ++a) {
 388                 if (a->empty() == true || std::find(a + 1, archs.rend(), *a) != archs.rend())
 389                         archs.erase(a.base()-1);
 390                 if (a == archs.rend())
 391                         break;
 392         }
 393
 394         return archs;
 395 }
 396                                                                         /*}}}*/
 397 // checkArchitecture - are we interested in the given Architecture?     /*{{{*/
 398 bool Configuration::checkArchitecture(std::string const &Arch) {
 399         if (Arch == "all")
 400                 return true;
 401         std::vector<std::string> const archs = getArchitectures(true);
 402         return (std::find(archs.begin(), archs.end(), Arch) != archs.end());
 403 }
 404                                                                         /*}}}*/
 405 // setDefaultConfigurationForCompressors                                /*{{{*/
 406 void Configuration::setDefaultConfigurationForCompressors() {
 407         // Set default application paths to check for optional compression types
 408         _config->CndSet("Dir::Bin::bzip2", "/bin/bzip2");
 409         _config->CndSet("Dir::Bin::xz", "/usr/bin/xz");
 410         if (FileExists(_config->FindFile("Dir::Bin::xz")) == true) {
 411                 _config->Set("Dir::Bin::lzma", _config->FindFile("Dir::Bin::xz"));
 412                 _config->Set("APT::Compressor::lzma::Binary", "xz");
 413                 if (_config->Exists("APT::Compressor::lzma::CompressArg") == false) {
 414                         _config->Set("APT::Compressor::lzma::CompressArg::", "--format=lzma");
 415                         _config->Set("APT::Compressor::lzma::CompressArg::", "-9");
 416                 }
 417                 if (_config->Exists("APT::Compressor::lzma::UncompressArg") == false) {
 418                         _config->Set("APT::Compressor::lzma::UncompressArg::", "--format=lzma");
 419                         _config->Set("APT::Compressor::lzma::UncompressArg::", "-d");
 420                 }
 421         } else {
 422                 _config->CndSet("Dir::Bin::lzma", "/usr/bin/lzma");
 423                 if (_config->Exists("APT::Compressor::lzma::CompressArg") == false) {
 424                         _config->Set("APT::Compressor::lzma::CompressArg::", "--suffix=");
 425                         _config->Set("APT::Compressor::lzma::CompressArg::", "-9");
 426                 }
 427                 if (_config->Exists("APT::Compressor::lzma::UncompressArg") == false) {
 428                         _config->Set("APT::Compressor::lzma::UncompressArg::", "--suffix=");
 429                         _config->Set("APT::Compressor::lzma::UncompressArg::", "-d");
 430                 }
 431         }
 432 }
 433                                                                         /*}}}*/
 434 // getCompressors - Return Vector of usealbe compressors                /*{{{*/
 435 // ---------------------------------------------------------------------
 436 /* return a vector of compressors used by apt-ftparchive in the
 437    multicompress functionality or to detect data.tar files */
 438 std::vector<APT::Configuration::Compressor>
 439 const Configuration::getCompressors(bool const Cached) {
 440         static std::vector<APT::Configuration::Compressor> compressors;
 441         if (compressors.empty() == false) {
 442                 if (Cached == true)
 443                         return compressors;
 444                 else
 445                         compressors.clear();
 446         }
 447
 448         setDefaultConfigurationForCompressors();
 449
 450         compressors.push_back(Compressor(".", "", "", NULL, NULL, 1));
 451         if (_config->Exists("Dir::Bin::gzip") == false || FileExists(_config->FindFile("Dir::Bin::gzip")) == true)
 452                 compressors.push_back(Compressor("gzip",".gz","gzip","-9n","-d",2));
 453 #ifdef HAVE_ZLIB
 454         else
 455                 compressors.push_back(Compressor("gzip",".gz","false", NULL, NULL, 2));
 456 #endif
 457         if (_config->Exists("Dir::Bin::bzip2") == false || FileExists(_config->FindFile("Dir::Bin::bzip2")) == true)
 458                 compressors.push_back(Compressor("bzip2",".bz2","bzip2","-9","-d",3));
 459 #ifdef HAVE_BZ2
 460         else
 461                 compressors.push_back(Compressor("bzip2",".bz2","false", NULL, NULL, 3));
 462 #endif
 463         if (_config->Exists("Dir::Bin::xz") == false || FileExists(_config->FindFile("Dir::Bin::xz")) == true)
 464                 compressors.push_back(Compressor("xz",".xz","xz","-6","-d",4));
 465 #ifdef HAVE_LZMA
 466         else
 467                 compressors.push_back(Compressor("xz",".xz","false", NULL, NULL, 4));
 468 #endif
 469         if (_config->Exists("Dir::Bin::lzma") == false || FileExists(_config->FindFile("Dir::Bin::lzma")) == true)
 470                 compressors.push_back(Compressor("lzma",".lzma","lzma","-9","-d",5));
 471 #ifdef HAVE_LZMA
 472         else
 473                 compressors.push_back(Compressor("lzma",".lzma","false", NULL, NULL, 5));
 474 #endif
 475
 476         std::vector<std::string> const comp = _config->FindVector("APT::Compressor");
 477         for (std::vector<std::string>::const_iterator c = comp.begin();
 478              c != comp.end(); ++c) {
 479                 if (c->empty() || *c == "." || *c == "gzip" || *c == "bzip2" || *c == "lzma" || *c == "xz")
 480                         continue;
 481                 compressors.push_back(Compressor(c->c_str(), std::string(".").append(*c).c_str(), c->c_str(), "-9", "-d", 100));
 482         }
 483
 484         return compressors;
 485 }
 486                                                                         /*}}}*/
 487 // getCompressorExtensions - supported data.tar extensions              /*{{{*/
 488 // ---------------------------------------------------------------------
 489 /* */
 490 std::vector<std::string> const Configuration::getCompressorExtensions() {
 491         std::vector<APT::Configuration::Compressor> const compressors = getCompressors();
 492         std::vector<std::string> ext;
 493         for (std::vector<APT::Configuration::Compressor>::const_iterator c = compressors.begin();
 494              c != compressors.end(); ++c)
 495                 if (c->Extension.empty() == false && c->Extension != ".")
 496                         ext.push_back(c->Extension);
 497         return ext;
 498 }
 499                                                                         /*}}}*/
 500 // Compressor constructor                                               /*{{{*/
 501 // ---------------------------------------------------------------------
 502 /* */
 503 Configuration::Compressor::Compressor(char const *name, char const *extension,
 504                                       char const *binary,
 505                                       char const *compressArg, char const *uncompressArg,
 506                                       unsigned short const cost) {
 507         std::string const config = std::string("APT::Compressor::").append(name).append("::");
 508         Name = _config->Find(std::string(config).append("Name"), name);
 509         Extension = _config->Find(std::string(config).append("Extension"), extension);
 510         Binary = _config->Find(std::string(config).append("Binary"), binary);
 511         Cost = _config->FindI(std::string(config).append("Cost"), cost);
 512         std::string const compConf = std::string(config).append("CompressArg");
 513         if (_config->Exists(compConf) == true)
 514                 CompressArgs = _config->FindVector(compConf);
 515         else if (compressArg != NULL)
 516                 CompressArgs.push_back(compressArg);
 517         std::string const uncompConf = std::string(config).append("UncompressArg");
 518         if (_config->Exists(uncompConf) == true)
 519                 UncompressArgs = _config->FindVector(uncompConf);
 520         else if (uncompressArg != NULL)
 521                 UncompressArgs.push_back(uncompressArg);
 522 }
 523                                                                         /*}}}*/
 524 // getBuildProfiles - return a vector of enabled build profiles         /*{{{*/
 525 std::vector<std::string> const Configuration::getBuildProfiles() {
 526         // order is: override value (~= commandline), environment variable, list (~= config file)
 527         std::string profiles_env = getenv("DEB_BUILD_PROFILES") == 0 ? "" : getenv("DEB_BUILD_PROFILES");
 528         if (profiles_env.empty() == false) {
 529                 profiles_env = SubstVar(profiles_env, " ", ",");
 530                 std::string const bp = _config->Find("APT::Build-Profiles");
 531                 _config->Clear("APT::Build-Profiles");
 532                 if (bp.empty() == false)
 533                         _config->Set("APT::Build-Profiles", bp);
 534         }
 535         return _config->FindVector("APT::Build-Profiles", profiles_env);
 536 }
 537 std::string const Configuration::getBuildProfilesString() {
 538         std::vector<std::string> profiles = getBuildProfiles();
 539         if (profiles.empty() == true)
 540                 return "";
 541         std::vector<std::string>::const_iterator p = profiles.begin();
 542         std::string list = *p;
 543         for (; p != profiles.end(); ++p)
 544            list.append(",").append(*p);
 545         return list;
 546 }
 547                                                                         /*}}}*/
 548 }