src/UpdateChecker.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // MuldeR's Utilities for Qt
   3 // Copyright (C) 2004-2018 LoRd_MuldeR <MuldeR2@GMX.de>
   4 //
   5 // This library is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU Lesser General Public
   7 // License as published by the Free Software Foundation; either
   8 // version 2.1 of the License, or (at your option) any later version.
   9 //
  10 // This library is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 // Lesser General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU Lesser General Public
  16 // License along with this library; if not, write to the Free Software
  17 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  18 //
  19 // http://www.gnu.org/licenses/lgpl-2.1.txt
  20 //////////////////////////////////////////////////////////////////////////////////
  21
  22 #include <MUtils/Global.h>
  23 #include <MUtils/UpdateChecker.h>
  24 #include <MUtils/OSSupport.h>
  25 #include <MUtils/Exception.h>
  26
  27 #include <QStringList>
  28 #include <QFile>
  29 #include <QFileInfo>
  30 #include <QDir>
  31 #include <QProcess>
  32 #include <QUrl>
  33 #include <QEventLoop>
  34 #include <QTimer>
  35 #include <QElapsedTimer>
  36 #include <QSet>
  37 #include <QHash>
  38 #include <QQueue>
  39
  40 #include "Mirrors.h"
  41
  42 ///////////////////////////////////////////////////////////////////////////////
  43 // CONSTANTS
  44 ///////////////////////////////////////////////////////////////////////////////
  45
  46 static const char *GLOBALHEADER_ID = "!Update";
  47
  48 static const char *MIRROR_URL_POSTFIX[] =
  49 {
  50         "update.ver",
  51         "update_beta.ver",
  52         NULL
  53 };
  54
  55 static const int MIN_CONNSCORE = 5;
  56 static const int QUICK_MIRRORS = 3;
  57 static const int MAX_CONN_TIMEOUT = 16000;
  58 static const int DOWNLOAD_TIMEOUT = 30000;
  59
  60 static const int VERSION_INFO_EXPIRES_MONTHS = 6;
  61 static char *USER_AGENT_STR = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Firefox/52.0"; /*use something innocuous*/
  62
  63 ////////////////////////////////////////////////////////////
  64 // Utility Macros
  65 ////////////////////////////////////////////////////////////
  66
  67 #define CHECK_CANCELLED() do \
  68 { \
  69         if(MUTILS_BOOLIFY(m_cancelled)) \
  70         { \
  71                 m_success.fetchAndStoreOrdered(0); \
  72                 log("", "Update check has been cancelled by user!"); \
  73                 setProgress(m_maxProgress); \
  74                 setStatus(UpdateStatus_CancelledByUser); \
  75                 return; \
  76         } \
  77 } \
  78 while(0)
  79
  80 #define LOG_MESSAGE_HELPER(X) do \
  81 { \
  82         if (!(X).isNull()) \
  83         { \
  84                 emit messageLogged((X)); \
  85         } \
  86 } \
  87 while(0)
  88
  89 #define STRICMP(X,Y) ((X).compare((Y), Qt::CaseInsensitive) == 0)
  90
  91 ////////////////////////////////////////////////////////////
  92 // Helper Functions
  93 ////////////////////////////////////////////////////////////
  94
  95 static QQueue<QString> buildRandomList(const char *const *values)
  96 {
  97         QQueue<QString> list;
  98         while(*values)
  99         {
 100                 list.insert(MUtils::next_rand_u32(list.size() + 1), QString::fromLatin1(*(values++)));
 101         }
 102         return list;
 103 }
 104
 105 static const QHash<QString, QString> *initEnvVars(void)
 106 {
 107         QHash<QString, QString> *const environment = new QHash<QString, QString>();
 108         environment->insert(QLatin1String("CURL_HOME"), QDir::toNativeSeparators(MUtils::temp_folder()));
 109         return environment;
 110 }
 111
 112 ////////////////////////////////////////////////////////////
 113 // Update Info Class
 114 ////////////////////////////////////////////////////////////
 115
 116 MUtils::UpdateCheckerInfo::UpdateCheckerInfo(void)
 117 {
 118         resetInfo();
 119 }
 120
 121 void MUtils::UpdateCheckerInfo::resetInfo(void)
 122 {
 123         m_buildNo = 0;
 124         m_buildDate.setDate(1900, 1, 1);
 125         m_downloadSite.clear();
 126         m_downloadAddress.clear();
 127         m_downloadFilename.clear();
 128         m_downloadFilecode.clear();
 129         m_downloadChecksum.clear();
 130 }
 131
 132 bool MUtils::UpdateCheckerInfo::isComplete(void)
 133 {
 134         return (this->m_buildNo > 0) &&
 135                 (this->m_buildDate.year() >= 2010) &&
 136                 (!this->m_downloadSite.isEmpty()) &&
 137                 (!this->m_downloadAddress.isEmpty()) &&
 138                 (!this->m_downloadFilename.isEmpty()) &&
 139                 (!this->m_downloadFilecode.isEmpty()) &&
 140                 (!this->m_downloadChecksum.isEmpty());
 141 }
 142
 143 ////////////////////////////////////////////////////////////
 144 // Constructor & Destructor
 145 ////////////////////////////////////////////////////////////
 146
 147 MUtils::UpdateChecker::UpdateChecker(const QString &binCurl, const QString &binGnuPG, const QString &binKeys, const QString &applicationId, const quint32 &installedBuildNo, const bool betaUpdates, const bool testMode)
 148 :
 149         m_updateInfo(new UpdateCheckerInfo()),
 150         m_binaryCurl(binCurl),
 151         m_binaryGnuPG(binGnuPG),
 152         m_binaryKeys(binKeys),
 153         m_applicationId(applicationId),
 154         m_installedBuildNo(installedBuildNo),
 155         m_betaUpdates(betaUpdates),
 156         m_testMode(testMode),
 157         m_maxProgress(MIN_CONNSCORE + 5),
 158         m_environment(initEnvVars())
 159 {
 160         m_status = UpdateStatus_NotStartedYet;
 161         m_progress = 0;
 162
 163         if(m_binaryCurl.isEmpty() || m_binaryGnuPG.isEmpty() || m_binaryKeys.isEmpty())
 164         {
 165                 MUTILS_THROW("Tools not initialized correctly!");
 166         }
 167 }
 168
 169 MUtils::UpdateChecker::~UpdateChecker(void)
 170 {
 171 }
 172
 173 ////////////////////////////////////////////////////////////
 174 // Public slots
 175 ////////////////////////////////////////////////////////////
 176
 177 void MUtils::UpdateChecker::start(Priority priority)
 178 {
 179         m_success.fetchAndStoreOrdered(0);
 180         m_cancelled.fetchAndStoreOrdered(0);
 181         QThread::start(priority);
 182 }
 183
 184 ////////////////////////////////////////////////////////////
 185 // Protected functions
 186 ////////////////////////////////////////////////////////////
 187
 188 void MUtils::UpdateChecker::run(void)
 189 {
 190         qDebug("Update checker thread started!");
 191         MUTILS_EXCEPTION_HANDLER(m_testMode ? testMirrorsList() : checkForUpdates());
 192         qDebug("Update checker thread completed.");
 193 }
 194
 195 void MUtils::UpdateChecker::checkForUpdates(void)
 196 {
 197         // ----- Initialization ----- //
 198
 199         m_updateInfo->resetInfo();
 200         setProgress(0);
 201
 202         // ----- Test Internet Connection ----- //
 203
 204         log("Checking your Internet connection...", "");
 205         setStatus(UpdateStatus_CheckingConnection);
 206
 207         const int networkStatus = OS::network_status();
 208         if(networkStatus == OS::NETWORK_TYPE_NON)
 209         {
 210                 if (!MUtils::OS::arguments().contains("ignore-network-status"))
 211                 {
 212                         log("Operating system reports that the computer is currently offline !!!");
 213                         setProgress(m_maxProgress);
 214                         setStatus(UpdateStatus_ErrorNoConnection);
 215                         return;
 216                 }
 217         }
 218
 219         msleep(333);
 220         setProgress(1);
 221
 222         // ----- Test Known Hosts Connectivity ----- //
 223
 224         int connectionScore = 0;
 225         QQueue<QString> mirrorList = buildRandomList(known_hosts);
 226
 227         for(int connectionTimeout = 1000; connectionTimeout <= MAX_CONN_TIMEOUT; connectionTimeout *= 2)
 228         {
 229                 QElapsedTimer elapsedTimer;
 230                 elapsedTimer.start();
 231                 const int globalTimeout = 2 * MIN_CONNSCORE * connectionTimeout, count = mirrorList.count();
 232                 for(int i = 0; i < count; ++i)
 233                 {
 234                         Q_ASSERT(!mirrorList.isEmpty());
 235                         const QString hostName = mirrorList.dequeue();
 236                         if (tryContactHost(hostName, connectionTimeout))
 237                         {
 238                                 setProgress(1 + (++connectionScore));
 239                                 if (connectionScore >= MIN_CONNSCORE)
 240                                 {
 241                                         goto endLoop; /*success*/
 242                                 }
 243                         }
 244                         else
 245                         {
 246                                 mirrorList.enqueue(hostName);
 247                                 if(elapsedTimer.hasExpired(globalTimeout))
 248                                 {
 249                                         break; /*timer expired*/
 250                                 }
 251                         }
 252                         CHECK_CANCELLED();
 253                 }
 254         }
 255
 256 endLoop:
 257         if(connectionScore < MIN_CONNSCORE)
 258         {
 259                 log("", "Connectivity test has failed: Internet connection appears to be broken!");
 260                 setProgress(m_maxProgress);
 261                 setStatus(UpdateStatus_ErrorConnectionTestFailed);
 262                 return;
 263         }
 264
 265         // ----- Fetch Update Info From Server ----- //
 266
 267         log("----", "", "Internet connection is operational, checking for updates online...");
 268         setStatus(UpdateStatus_FetchingUpdates);
 269
 270         int mirrorCount = 0;
 271         mirrorList = buildRandomList(update_mirrors);
 272
 273         while(!mirrorList.isEmpty())
 274         {
 275                 const QString currentMirror = mirrorList.takeFirst();
 276                 const bool isQuick = (mirrorCount++ < QUICK_MIRRORS);
 277                 if(tryUpdateMirror(m_updateInfo.data(), currentMirror, isQuick))
 278                 {
 279                         m_success.ref(); /*success*/
 280                         break;
 281                 }
 282                 if (isQuick)
 283                 {
 284                         mirrorList.append(currentMirror); /*re-schedule*/
 285                 }
 286                 CHECK_CANCELLED();
 287                 msleep(1);
 288         }
 289
 290         msleep(333);
 291         setProgress(MIN_CONNSCORE + 5);
 292
 293         // ----- Generate final result ----- //
 294
 295         if(MUTILS_BOOLIFY(m_success))
 296         {
 297                 if(m_updateInfo->m_buildNo > m_installedBuildNo)
 298                 {
 299                         setStatus(UpdateStatus_CompletedUpdateAvailable);
 300                 }
 301                 else if(m_updateInfo->m_buildNo == m_installedBuildNo)
 302                 {
 303                         setStatus(UpdateStatus_CompletedNoUpdates);
 304                 }
 305                 else
 306                 {
 307                         setStatus(UpdateStatus_CompletedNewVersionOlder);
 308                 }
 309         }
 310         else
 311         {
 312                 setStatus(UpdateStatus_ErrorFetchUpdateInfo);
 313         }
 314 }
 315
 316 void MUtils::UpdateChecker::testMirrorsList(void)
 317 {
 318         QQueue<QString> mirrorList;
 319         for(int i = 0; update_mirrors[i]; i++)
 320         {
 321                 mirrorList.enqueue(QString::fromLatin1(update_mirrors[i]));
 322         }
 323
 324         // ----- Test update mirrors ----- //
 325
 326         qDebug("\n[Mirror Sites]");
 327         log("Testing all known mirror sites...", "", "---");
 328
 329         UpdateCheckerInfo updateInfo;
 330         while (!mirrorList.isEmpty())
 331         {
 332                 const QString currentMirror = mirrorList.dequeue();
 333                 bool success = false;
 334                 qDebug("Testing: %s", MUTILS_L1STR(currentMirror));
 335                 log("", "Testing mirror:", currentMirror, "");
 336                 for (quint8 attempt = 0; attempt < 3; ++attempt)
 337                 {
 338                         updateInfo.resetInfo();
 339                         if (tryUpdateMirror(&updateInfo, currentMirror, (!attempt)))
 340                         {
 341                                 success = true;
 342                                 break;
 343                         }
 344                 }
 345                 if (!success)
 346                 {
 347                         qWarning("\nUpdate mirror seems to be unavailable:\n%s\n", MUTILS_L1STR(currentMirror));
 348                 }
 349                 log("", "---");
 350         }
 351
 352         // ----- Test known hosts ----- //
 353
 354         mirrorList.clear();
 355         for (int i = 0; known_hosts[i]; i++)
 356         {
 357                 mirrorList.enqueue(QString::fromLatin1(known_hosts[i]));
 358         }
 359
 360         qDebug("\n[Known Hosts]");
 361         log("Testing all known hosts...", "", "---");
 362
 363         while(!mirrorList.isEmpty())
 364         {
 365                 const QString currentHost = mirrorList.dequeue();
 366                 qDebug("Testing: %s", MUTILS_L1STR(currentHost));
 367                 log(QLatin1String(""), "Testing host:", currentHost, "");
 368                 if (!tryContactHost(currentHost, DOWNLOAD_TIMEOUT))
 369                 {
 370                         qWarning("\nConnectivity test FAILED on the following host:\n%s\n", MUTILS_L1STR(currentHost));
 371                 }
 372                 log("---");
 373         }
 374 }
 375
 376 ////////////////////////////////////////////////////////////
 377 // PRIVATE FUNCTIONS
 378 ////////////////////////////////////////////////////////////
 379
 380 void MUtils::UpdateChecker::setStatus(const int status)
 381 {
 382         if(m_status != status)
 383         {
 384                 m_status = status;
 385                 emit statusChanged(status);
 386         }
 387 }
 388
 389 void MUtils::UpdateChecker::setProgress(const int progress)
 390 {
 391         const int value = qBound(0, progress, m_maxProgress);
 392         if(m_progress != value)
 393         {
 394                 emit progressChanged(m_progress = value);
 395         }
 396 }
 397
 398 void MUtils::UpdateChecker::log(const QString &str1, const QString &str2, const QString &str3, const QString &str4)
 399 {
 400         LOG_MESSAGE_HELPER(str1);
 401         LOG_MESSAGE_HELPER(str2);
 402         LOG_MESSAGE_HELPER(str3);
 403         LOG_MESSAGE_HELPER(str4);
 404 }
 405
 406 bool MUtils::UpdateChecker::tryUpdateMirror(UpdateCheckerInfo *updateInfo, const QString &url, const bool &quick)
 407 {
 408         bool success = false;
 409         log("", "Trying update mirror:", url, "");
 410
 411         if (quick)
 412         {
 413                 setProgress(MIN_CONNSCORE + 1);
 414                 if (!tryContactHost(QUrl(url).host(), (MAX_CONN_TIMEOUT / 8)))
 415                 {
 416                         log("", "Mirror is too slow, skipping!");
 417                         return false;
 418                 }
 419         }
 420
 421         const QString randPart = next_rand_str();
 422         const QString outFileVers = QString("%1/%2.ver").arg(temp_folder(), randPart);
 423         const QString outFileSign = QString("%1/%2.sig").arg(temp_folder(), randPart);
 424
 425         if (!getUpdateInfo(url, outFileVers, outFileSign))
 426         {
 427                 log("", "Oops: Download of update information has failed!");
 428                 goto cleanUp;
 429         }
 430
 431         log("Download completed, verifying signature:", "");
 432         setProgress(MIN_CONNSCORE + 4);
 433         if (!checkSignature(outFileVers, outFileSign))
 434         {
 435                 log("", "Bad signature detected, take care !!!");
 436                 goto cleanUp;
 437         }
 438
 439         log("", "Signature is valid, parsing update information:", "");
 440         success = parseVersionInfo(outFileVers, updateInfo);
 441
 442 cleanUp:
 443         QFile::remove(outFileVers);
 444         QFile::remove(outFileSign);
 445         return success;
 446 }
 447
 448 bool MUtils::UpdateChecker::getUpdateInfo(const QString &url, const QString &outFileVers, const QString &outFileSign)
 449 {
 450         log("Downloading update information:", "");
 451         setProgress(MIN_CONNSCORE + 2);
 452         if(getFile(QUrl(QString("%1%2").arg(url, MIRROR_URL_POSTFIX[m_betaUpdates ? 1 : 0])), outFileVers))
 453         {
 454                 if (!m_cancelled)
 455                 {
 456                         log( "Downloading signature file:", "");
 457                         setProgress(MIN_CONNSCORE + 3);
 458                         if (getFile(QUrl(QString("%1%2.sig2").arg(url, MIRROR_URL_POSTFIX[m_betaUpdates ? 1 : 0])), outFileSign))
 459                         {
 460                                 return true; /*completed*/
 461                         }
 462                 }
 463         }
 464         return false;
 465 }
 466
 467 //----------------------------------------------------------
 468 // PARSE UPDATE INFO
 469 //----------------------------------------------------------
 470
 471 #define _CHECK_HEADER(ID,NAME) \
 472         if (STRICMP(name, (NAME))) \
 473         { \
 474                 sectionId = (ID); \
 475                 continue; \
 476         }
 477
 478 #define _PARSE_TEXT(OUT,KEY) \
 479         if (STRICMP(key, (KEY))) \
 480         { \
 481                 (OUT) = val; \
 482                 break; \
 483         }
 484
 485 #define _PARSE_UINT(OUT,KEY) \
 486         if (STRICMP(key, (KEY))) \
 487         { \
 488                 bool _ok = false; \
 489                 const unsigned int _tmp = val.toUInt(&_ok); \
 490                 if (_ok) \
 491                 { \
 492                         (OUT) = _tmp; \
 493                         break; \
 494                 } \
 495         }
 496
 497 #define _PARSE_DATE(OUT,KEY) \
 498         if (STRICMP(key, (KEY))) \
 499         { \
 500                 const QDate _tmp = QDate::fromString(val, Qt::ISODate); \
 501                 if (_tmp.isValid()) \
 502                 { \
 503                         (OUT) = _tmp; \
 504                         break; \
 505                 } \
 506         }
 507
 508 bool MUtils::UpdateChecker::parseVersionInfo(const QString &file, UpdateCheckerInfo *const updateInfo)
 509 {
 510         updateInfo->resetInfo();
 511
 512         QFile data(file);
 513         if(!data.open(QIODevice::ReadOnly))
 514         {
 515                 qWarning("Cannot open update info file for reading!");
 516                 return false;
 517         }
 518
 519         QDate updateInfoDate;
 520         int sectionId = 0;
 521         QRegExp regex_sec("^\\[(.+)\\]$"), regex_val("^([^=]+)=(.+)$");
 522
 523         while(!data.atEnd())
 524         {
 525                 QString line = QString::fromLatin1(data.readLine()).trimmed();
 526                 if (regex_sec.indexIn(line) >= 0)
 527                 {
 528                         sectionId = 0; /*unknown section*/
 529                         const QString name = regex_sec.cap(1).trimmed();
 530                         log(QString("Sec: [%1]").arg(name));
 531                         _CHECK_HEADER(1, GLOBALHEADER_ID)
 532                         _CHECK_HEADER(2, m_applicationId)
 533                         continue;
 534                 }
 535                 if (regex_val.indexIn(line) >= 0)
 536                 {
 537                         const QString key = regex_val.cap(1).trimmed();
 538                         const QString val = regex_val.cap(2).trimmed();
 539                         log(QString("Val: \"%1\" = \"%2\"").arg(key, val));
 540                         switch (sectionId)
 541                         {
 542                         case 1:
 543                                 _PARSE_DATE(updateInfoDate, "TimestampCreated")
 544                                 break;
 545                         case 2:
 546                                 _PARSE_UINT(updateInfo->m_buildNo,          "BuildNo")
 547                                 _PARSE_DATE(updateInfo->m_buildDate,        "BuildDate")
 548                                 _PARSE_TEXT(updateInfo->m_downloadSite,     "DownloadSite")
 549                                 _PARSE_TEXT(updateInfo->m_downloadAddress,  "DownloadAddress")
 550                                 _PARSE_TEXT(updateInfo->m_downloadFilename, "DownloadFilename")
 551                                 _PARSE_TEXT(updateInfo->m_downloadFilecode, "DownloadFilecode")
 552                                 _PARSE_TEXT(updateInfo->m_downloadChecksum, "DownloadChecksum")
 553                                 break;
 554                         }
 555                 }
 556         }
 557
 558         if (!updateInfo->isComplete())
 559         {
 560                 log("", "WARNING: Update information is incomplete!");
 561                 goto failure;
 562         }
 563
 564         if(updateInfoDate.isValid())
 565         {
 566                 const QDate expiredDate = updateInfoDate.addMonths(VERSION_INFO_EXPIRES_MONTHS);
 567                 if (expiredDate < OS::current_date())
 568                 {
 569                         log("", QString("WARNING: Update information has expired at %1!").arg(expiredDate.toString(Qt::ISODate)));
 570                         goto failure;
 571                 }
 572         }
 573         else
 574         {
 575                 log("", "WARNING: Timestamp is missing from update information header!");
 576                 goto failure;
 577         }
 578
 579         log("", "Success: Update information is complete.");
 580         return true; /*success*/
 581
 582 failure:
 583         updateInfo->resetInfo();
 584         return false;
 585 }
 586
 587 //----------------------------------------------------------
 588 // EXTERNAL TOOLS
 589 //----------------------------------------------------------
 590
 591 bool MUtils::UpdateChecker::getFile(const QUrl &url, const QString &outFile, const unsigned int maxRedir)
 592 {
 593         QFileInfo output(outFile);
 594         output.setCaching(false);
 595
 596         if (output.exists())
 597         {
 598                 QFile::remove(output.canonicalFilePath());
 599                 if (output.exists())
 600                 {
 601                         qWarning("Existing output file could not be found!");
 602                         return false;
 603                 }
 604         }
 605
 606         QStringList args(QLatin1String("-vsSNqkfL"));
 607         args << "-m" << QString::number(DOWNLOAD_TIMEOUT / 1000);
 608         args << "--max-redirs" << QString::number(maxRedir);
 609         args << "-A" << USER_AGENT_STR;
 610         args << "-e" << QString("%1://%2/;auto").arg(url.scheme(), url.host());
 611         args << "-o" << output.fileName() << url.toString();
 612
 613         return execCurl(args, output.absolutePath(), DOWNLOAD_TIMEOUT);
 614 }
 615
 616 bool MUtils::UpdateChecker::tryContactHost(const QString &hostname, const int &timeoutMsec)
 617 {
 618         log(QString("Connecting to host: %1").arg(hostname), "");
 619
 620         QStringList args(QLatin1String("-vsSNqkI"));
 621         args << "-m" << QString::number(qMax(1, timeoutMsec / 1000));
 622         args << "-A" << USER_AGENT_STR;
 623         args << "-o" << OS::null_device() << QString("http://%1/").arg(hostname);
 624
 625         return execCurl(args, temp_folder(), timeoutMsec);
 626 }
 627
 628 bool MUtils::UpdateChecker::checkSignature(const QString &file, const QString &signature)
 629 {
 630         if (QFileInfo(file).absolutePath().compare(QFileInfo(signature).absolutePath(), Qt::CaseInsensitive) != 0)
 631         {
 632                 qWarning("CheckSignature: File and signature should be in same folder!");
 633                 return false;
 634         }
 635
 636         QString keyRingPath(m_binaryKeys);
 637         bool removeKeyring = false;
 638         if (QFileInfo(file).absolutePath().compare(QFileInfo(m_binaryKeys).absolutePath(), Qt::CaseInsensitive) != 0)
 639         {
 640                 keyRingPath = make_temp_file(QFileInfo(file).absolutePath(), "gpg");
 641                 removeKeyring = true;
 642                 if (!QFile::copy(m_binaryKeys, keyRingPath))
 643                 {
 644                         qWarning("CheckSignature: Failed to copy the key-ring file!");
 645                         return false;
 646                 }
 647         }
 648
 649         QStringList args;
 650         args << QStringList() << "--homedir" << ".";
 651         args << "--keyring" << QFileInfo(keyRingPath).fileName();
 652         args << QFileInfo(signature).fileName();
 653         args << QFileInfo(file).fileName();
 654
 655         const int exitCode = execProcess(m_binaryGnuPG, args, QFileInfo(file).absolutePath(), DOWNLOAD_TIMEOUT);
 656         if (exitCode != INT_MAX)
 657         {
 658                 log(QString().sprintf("Exited with code %d", exitCode));
 659         }
 660
 661         if (removeKeyring)
 662         {
 663                 remove_file(keyRingPath);
 664         }
 665
 666         return (exitCode == 0); /*completed*/
 667 }
 668
 669 bool MUtils::UpdateChecker::execCurl(const QStringList &args, const QString &workingDir, const int timeout)
 670 {
 671         const int exitCode = execProcess(m_binaryCurl, args, workingDir, timeout + (timeout / 2));
 672         if (exitCode != INT_MAX)
 673         {
 674                 switch (exitCode)
 675                 {
 676                         case  0: log(QLatin1String("DONE: Transfer completed successfully."), "");                     break;
 677                         case  6: log(QLatin1String("ERROR: Remote host could not be resolved!"), "");                  break;
 678                         case  7: log(QLatin1String("ERROR: Connection to remote host could not be established!"), ""); break;
 679                         case 22: log(QLatin1String("ERROR: Requested URL was not found or returned an error!"), "");   break;
 680                         case 28: log(QLatin1String("ERROR: Operation timed out !!!"), "");                             break;
 681                         default: log(QString().sprintf("ERROR: Terminated with unknown code %d", exitCode), "");       break;
 682                 }
 683         }
 684
 685         return (exitCode == 0); /*completed*/
 686 }
 687
 688 int MUtils::UpdateChecker::execProcess(const QString &programFile, const QStringList &args, const QString &workingDir, const int timeout)
 689 {
 690         QProcess process;
 691         init_process(process, workingDir, true, NULL, m_environment.data());
 692
 693         QEventLoop loop;
 694         connect(&process, SIGNAL(error(QProcess::ProcessError)), &loop, SLOT(quit()));
 695         connect(&process, SIGNAL(finished(int, QProcess::ExitStatus)), &loop, SLOT(quit()));
 696         connect(&process, SIGNAL(readyRead()), &loop, SLOT(quit()));
 697
 698         QTimer timer;
 699         timer.setSingleShot(true);
 700         connect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
 701
 702         process.start(programFile, args);
 703         if (!process.waitForStarted())
 704         {
 705                 log("PROCESS FAILED TO START !!!", "");
 706                 qWarning("WARNING: %s process could not be created!", MUTILS_UTF8(QFileInfo(programFile).fileName()));
 707                 return INT_MAX; /*failed to start*/
 708         }
 709
 710         bool bAborted = false;
 711         timer.start(qMax(timeout, 1500));
 712
 713         while (process.state() != QProcess::NotRunning)
 714         {
 715                 loop.exec();
 716                 while (process.canReadLine())
 717                 {
 718                         const QString line = QString::fromLatin1(process.readLine()).simplified();
 719                         if (line.length() > 1)
 720                         {
 721                                 log(line);
 722                         }
 723                 }
 724                 const bool bCancelled = MUTILS_BOOLIFY(m_cancelled);
 725                 if (bAborted = (bCancelled || ((!timer.isActive()) && (!process.waitForFinished(125)))))
 726                 {
 727                         log(bCancelled ? "CANCELLED BY USER !!!" : "PROCESS TIMEOUT !!!", "");
 728                         qWarning("WARNING: %s process %s!", MUTILS_UTF8(QFileInfo(programFile).fileName()), bCancelled ? "cancelled" : "timed out");
 729                         break; /*abort process*/
 730                 }
 731         }
 732
 733         timer.stop();
 734         timer.disconnect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
 735
 736         if (bAborted)
 737         {
 738                 process.kill();
 739                 process.waitForFinished(-1);
 740         }
 741
 742         while (process.canReadLine())
 743         {
 744                 const QString line = QString::fromLatin1(process.readLine()).simplified();
 745                 if (line.length() > 1)
 746                 {
 747                         log(line);
 748                 }
 749         }
 750
 751         return bAborted ? INT_MAX : process.exitCode();
 752 }
 753
 754 ////////////////////////////////////////////////////////////
 755 // SLOTS
 756 ////////////////////////////////////////////////////////////
 757
 758 /*NONE*/
 759
 760 ////////////////////////////////////////////////////////////
 761 // EVENTS
 762 ////////////////////////////////////////////////////////////
 763
 764 /*NONE*/