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
  39 #include "Mirrors.h"
  40
  41 ///////////////////////////////////////////////////////////////////////////////
  42 // CONSTANTS
  43 ///////////////////////////////////////////////////////////////////////////////
  44
  45 static const char *GLOBALHEADER_ID = "!Update";
  46
  47 static const char *MIRROR_URL_POSTFIX[] =
  48 {
  49         "update.ver",
  50         "update_beta.ver",
  51         NULL
  52 };
  53
  54 static const int MIN_CONNSCORE = 5;
  55 static const int QUICK_MIRRORS = 3;
  56 static const int MAX_CONN_TIMEOUT = 16000;
  57 static const int DOWNLOAD_TIMEOUT = 30000;
  58
  59 static const int VERSION_INFO_EXPIRES_MONTHS = 6;
  60 static char *USER_AGENT_STR = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Firefox/52.0"; /*use something innocuous*/
  61
  62 ////////////////////////////////////////////////////////////
  63 // Utility Macros
  64 ////////////////////////////////////////////////////////////
  65
  66 #define CHECK_CANCELLED() do \
  67 { \
  68         if(MUTILS_BOOLIFY(m_cancelled)) \
  69         { \
  70                 m_success.fetchAndStoreOrdered(0); \
  71                 log("", "Update check has been cancelled by user!"); \
  72                 setProgress(m_maxProgress); \
  73                 setStatus(UpdateStatus_CancelledByUser); \
  74                 return; \
  75         } \
  76 } \
  77 while(0)
  78
  79 #define LOG_MESSAGE_HELPER(X) do \
  80 { \
  81         if (!(X).isNull()) \
  82         { \
  83                 emit messageLogged((X)); \
  84         } \
  85 } \
  86 while(0)
  87
  88 #define STRICMP(X,Y) ((X).compare((Y), Qt::CaseInsensitive) == 0)
  89
  90 ////////////////////////////////////////////////////////////
  91 // Helper Functions
  92 ////////////////////////////////////////////////////////////
  93
  94 static QStringList buildRandomList(const char *const values[])
  95 {
  96         QStringList list;
  97         for (int index = 0; values[index]; index++)
  98         {
  99                 const int pos = MUtils::next_rand_u32() % (index + 1);
 100                 list.insert(pos, QString::fromLatin1(values[index]));
 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         QStringList mirrorList = buildRandomList(known_hosts);
 226
 227         for(int connectionTimout = 1000; connectionTimout <= MAX_CONN_TIMEOUT; connectionTimout *= 2)
 228         {
 229                 QElapsedTimer elapsedTimer;
 230                 elapsedTimer.start();
 231                 const int globalTimout = 2 * MIN_CONNSCORE * connectionTimout;
 232                 while (!elapsedTimer.hasExpired(globalTimout))
 233                 {
 234                         const QString hostName = mirrorList.takeFirst();
 235                         if (tryContactHost(hostName, connectionTimout))
 236                         {
 237                                 setProgress(1 + (connectionScore += 1));
 238                                 elapsedTimer.restart();
 239                                 if (connectionScore >= MIN_CONNSCORE)
 240                                 {
 241                                         goto endLoop; /*success*/
 242                                 }
 243                         }
 244                         else
 245                         {
 246                                 mirrorList.append(hostName); /*re-schedule*/
 247                         }
 248                         CHECK_CANCELLED();
 249                         msleep(1);
 250                 }
 251         }
 252
 253 endLoop:
 254         if(connectionScore < MIN_CONNSCORE)
 255         {
 256                 log("", "Connectivity test has failed: Internet connection appears to be broken!");
 257                 setProgress(m_maxProgress);
 258                 setStatus(UpdateStatus_ErrorConnectionTestFailed);
 259                 return;
 260         }
 261
 262         // ----- Fetch Update Info From Server ----- //
 263
 264         log("----", "", "Internet connection is operational, checking for updates online...");
 265         setStatus(UpdateStatus_FetchingUpdates);
 266
 267         int mirrorCount = 0;
 268         mirrorList = buildRandomList(update_mirrors);
 269
 270         while(!mirrorList.isEmpty())
 271         {
 272                 const QString currentMirror = mirrorList.takeFirst();
 273                 const bool isQuick = (mirrorCount++ < QUICK_MIRRORS);
 274                 if(tryUpdateMirror(m_updateInfo.data(), currentMirror, isQuick))
 275                 {
 276                         m_success.ref(); /*success*/
 277                         break;
 278                 }
 279                 if (isQuick)
 280                 {
 281                         mirrorList.append(currentMirror); /*re-schedule*/
 282                 }
 283                 CHECK_CANCELLED();
 284                 msleep(1);
 285         }
 286
 287         msleep(333);
 288         setProgress(MIN_CONNSCORE + 5);
 289
 290         // ----- Generate final result ----- //
 291
 292         if(MUTILS_BOOLIFY(m_success))
 293         {
 294                 if(m_updateInfo->m_buildNo > m_installedBuildNo)
 295                 {
 296                         setStatus(UpdateStatus_CompletedUpdateAvailable);
 297                 }
 298                 else if(m_updateInfo->m_buildNo == m_installedBuildNo)
 299                 {
 300                         setStatus(UpdateStatus_CompletedNoUpdates);
 301                 }
 302                 else
 303                 {
 304                         setStatus(UpdateStatus_CompletedNewVersionOlder);
 305                 }
 306         }
 307         else
 308         {
 309                 setStatus(UpdateStatus_ErrorFetchUpdateInfo);
 310         }
 311 }
 312
 313 void MUtils::UpdateChecker::testMirrorsList(void)
 314 {
 315         QStringList mirrorList;
 316         for(int i = 0; update_mirrors[i]; i++)
 317         {
 318                 mirrorList << QString::fromLatin1(update_mirrors[i]);
 319         }
 320
 321         // ----- Test update mirrors ----- //
 322
 323         qDebug("\n[Mirror Sites]");
 324         log("Testing all known mirror sites...", "", "---");
 325
 326         UpdateCheckerInfo updateInfo;
 327         while (!mirrorList.isEmpty())
 328         {
 329                 const QString currentMirror = mirrorList.takeFirst();
 330                 bool success = false;
 331                 qDebug("Testing: %s", MUTILS_L1STR(currentMirror));
 332                 log("", "Testing:", currentMirror, "");
 333                 for (quint8 attempt = 0; attempt < 3; ++attempt)
 334                 {
 335                         updateInfo.resetInfo();
 336                         if (tryUpdateMirror(&updateInfo, currentMirror, (!attempt)))
 337                         {
 338                                 success = true;
 339                                 break;
 340                         }
 341                 }
 342                 if (!success)
 343                 {
 344                         qWarning("\nUpdate mirror seems to be unavailable:\n%s\n", MUTILS_L1STR(currentMirror));
 345                 }
 346                 log("", "---");
 347         }
 348
 349         // ----- Test known hosts ----- //
 350
 351         QStringList knownHostList;
 352         for (int i = 0; known_hosts[i]; i++)
 353         {
 354                 knownHostList << QString::fromLatin1(known_hosts[i]);
 355         }
 356
 357         qDebug("\n[Known Hosts]");
 358         log("Testing all known hosts...", "", "---");
 359
 360         while(!knownHostList.isEmpty())
 361         {
 362                 const QString currentHost = knownHostList.takeFirst();
 363                 qDebug("Testing: %s", MUTILS_L1STR(currentHost));
 364                 log(QLatin1String(""), "Testing:", currentHost, "");
 365                 if (!tryContactHost(currentHost, DOWNLOAD_TIMEOUT))
 366                 {
 367                         qWarning("\nConnectivity test FAILED on the following host:\n%s\n", MUTILS_L1STR(currentHost));
 368                 }
 369                 log("---");
 370         }
 371 }
 372
 373 ////////////////////////////////////////////////////////////
 374 // PRIVATE FUNCTIONS
 375 ////////////////////////////////////////////////////////////
 376
 377 void MUtils::UpdateChecker::setStatus(const int status)
 378 {
 379         if(m_status != status)
 380         {
 381                 m_status = status;
 382                 emit statusChanged(status);
 383         }
 384 }
 385
 386 void MUtils::UpdateChecker::setProgress(const int progress)
 387 {
 388         const int value = qBound(0, progress, m_maxProgress);
 389         if(m_progress != value)
 390         {
 391                 emit progressChanged(m_progress = value);
 392         }
 393 }
 394
 395 void MUtils::UpdateChecker::log(const QString &str1, const QString &str2, const QString &str3, const QString &str4)
 396 {
 397         LOG_MESSAGE_HELPER(str1);
 398         LOG_MESSAGE_HELPER(str2);
 399         LOG_MESSAGE_HELPER(str3);
 400         LOG_MESSAGE_HELPER(str4);
 401 }
 402
 403 bool MUtils::UpdateChecker::tryUpdateMirror(UpdateCheckerInfo *updateInfo, const QString &url, const bool &quick)
 404 {
 405         bool success = false;
 406         log("", "Trying update mirror:", url, "");
 407
 408         if (quick)
 409         {
 410                 setProgress(MIN_CONNSCORE + 1);
 411                 if (!tryContactHost(QUrl(url).host(), (MAX_CONN_TIMEOUT / 8)))
 412                 {
 413                         log("", "Mirror is too slow, skipping!");
 414                         return false;
 415                 }
 416         }
 417
 418         const QString randPart = next_rand_str();
 419         const QString outFileVers = QString("%1/%2.ver").arg(temp_folder(), randPart);
 420         const QString outFileSign = QString("%1/%2.sig").arg(temp_folder(), randPart);
 421
 422         if (!getUpdateInfo(url, outFileVers, outFileSign))
 423         {
 424                 log("", "Oops: Download of update information has failed!");
 425                 goto cleanUp;
 426         }
 427
 428         log("Download completed, verifying signature:", "");
 429         setProgress(MIN_CONNSCORE + 4);
 430         if (!checkSignature(outFileVers, outFileSign))
 431         {
 432                 log("", "Bad signature detected, take care !!!");
 433                 goto cleanUp;
 434         }
 435
 436         log("", "Signature is valid, parsing update information:", "");
 437         success = parseVersionInfo(outFileVers, updateInfo);
 438
 439 cleanUp:
 440         QFile::remove(outFileVers);
 441         QFile::remove(outFileSign);
 442         return success;
 443 }
 444
 445 bool MUtils::UpdateChecker::getUpdateInfo(const QString &url, const QString &outFileVers, const QString &outFileSign)
 446 {
 447         log("Downloading update information:", "");
 448         setProgress(MIN_CONNSCORE + 2);
 449         if(getFile(QUrl(QString("%1%2").arg(url, MIRROR_URL_POSTFIX[m_betaUpdates ? 1 : 0])), outFileVers))
 450         {
 451                 if (!m_cancelled)
 452                 {
 453                         log( "Downloading signature file:", "");
 454                         setProgress(MIN_CONNSCORE + 3);
 455                         if (getFile(QUrl(QString("%1%2.sig2").arg(url, MIRROR_URL_POSTFIX[m_betaUpdates ? 1 : 0])), outFileSign))
 456                         {
 457                                 return true; /*completed*/
 458                         }
 459                 }
 460         }
 461         return false;
 462 }
 463
 464 //----------------------------------------------------------
 465 // PARSE UPDATE INFO
 466 //----------------------------------------------------------
 467
 468 #define _CHECK_HEADER(ID,NAME) \
 469         if (STRICMP(name, (NAME))) \
 470         { \
 471                 sectionId = (ID); \
 472                 continue; \
 473         }
 474
 475 #define _PARSE_TEXT(OUT,KEY) \
 476         if (STRICMP(key, (KEY))) \
 477         { \
 478                 (OUT) = val; \
 479                 break; \
 480         }
 481
 482 #define _PARSE_UINT(OUT,KEY) \
 483         if (STRICMP(key, (KEY))) \
 484         { \
 485                 bool _ok = false; \
 486                 const unsigned int _tmp = val.toUInt(&_ok); \
 487                 if (_ok) \
 488                 { \
 489                         (OUT) = _tmp; \
 490                         break; \
 491                 } \
 492         }
 493
 494 #define _PARSE_DATE(OUT,KEY) \
 495         if (STRICMP(key, (KEY))) \
 496         { \
 497                 const QDate _tmp = QDate::fromString(val, Qt::ISODate); \
 498                 if (_tmp.isValid()) \
 499                 { \
 500                         (OUT) = _tmp; \
 501                         break; \
 502                 } \
 503         }
 504
 505 bool MUtils::UpdateChecker::parseVersionInfo(const QString &file, UpdateCheckerInfo *const updateInfo)
 506 {
 507         updateInfo->resetInfo();
 508
 509         QFile data(file);
 510         if(!data.open(QIODevice::ReadOnly))
 511         {
 512                 qWarning("Cannot open update info file for reading!");
 513                 return false;
 514         }
 515
 516         QDate updateInfoDate;
 517         int sectionId = 0;
 518         QRegExp regex_sec("^\\[(.+)\\]$"), regex_val("^([^=]+)=(.+)$");
 519
 520         while(!data.atEnd())
 521         {
 522                 QString line = QString::fromLatin1(data.readLine()).trimmed();
 523                 if (regex_sec.indexIn(line) >= 0)
 524                 {
 525                         sectionId = 0; /*unknown section*/
 526                         const QString name = regex_sec.cap(1).trimmed();
 527                         log(QString("Sec: [%1]").arg(name));
 528                         _CHECK_HEADER(1, GLOBALHEADER_ID)
 529                         _CHECK_HEADER(2, m_applicationId)
 530                         continue;
 531                 }
 532                 if (regex_val.indexIn(line) >= 0)
 533                 {
 534                         const QString key = regex_val.cap(1).trimmed();
 535                         const QString val = regex_val.cap(2).trimmed();
 536                         log(QString("Val: \"%1\" = \"%2\"").arg(key, val));
 537                         switch (sectionId)
 538                         {
 539                         case 1:
 540                                 _PARSE_DATE(updateInfoDate, "TimestampCreated")
 541                                 break;
 542                         case 2:
 543                                 _PARSE_UINT(updateInfo->m_buildNo,          "BuildNo")
 544                                 _PARSE_DATE(updateInfo->m_buildDate,        "BuildDate")
 545                                 _PARSE_TEXT(updateInfo->m_downloadSite,     "DownloadSite")
 546                                 _PARSE_TEXT(updateInfo->m_downloadAddress,  "DownloadAddress")
 547                                 _PARSE_TEXT(updateInfo->m_downloadFilename, "DownloadFilename")
 548                                 _PARSE_TEXT(updateInfo->m_downloadFilecode, "DownloadFilecode")
 549                                 _PARSE_TEXT(updateInfo->m_downloadChecksum, "DownloadChecksum")
 550                                 break;
 551                         }
 552                 }
 553         }
 554
 555         if (!updateInfo->isComplete())
 556         {
 557                 log("", "WARNING: Update information is incomplete!");
 558                 goto failure;
 559         }
 560
 561         if(updateInfoDate.isValid())
 562         {
 563                 const QDate expiredDate = updateInfoDate.addMonths(VERSION_INFO_EXPIRES_MONTHS);
 564                 if (expiredDate < OS::current_date())
 565                 {
 566                         log("", QString("WARNING: Update information has expired at %1!").arg(expiredDate.toString(Qt::ISODate)));
 567                         goto failure;
 568                 }
 569         }
 570         else
 571         {
 572                 log("", "WARNING: Timestamp is missing from update information header!");
 573                 goto failure;
 574         }
 575
 576         log("", "Success: Update information is complete.");
 577         return true; /*success*/
 578
 579 failure:
 580         updateInfo->resetInfo();
 581         return false;
 582 }
 583
 584 //----------------------------------------------------------
 585 // EXTERNAL TOOLS
 586 //----------------------------------------------------------
 587
 588 bool MUtils::UpdateChecker::getFile(const QUrl &url, const QString &outFile, const unsigned int maxRedir)
 589 {
 590         QFileInfo output(outFile);
 591         output.setCaching(false);
 592
 593         if (output.exists())
 594         {
 595                 QFile::remove(output.canonicalFilePath());
 596                 if (output.exists())
 597                 {
 598                         qWarning("Existing output file could not be found!");
 599                         return false;
 600                 }
 601         }
 602
 603         QStringList args(QLatin1String("-vsSNqkfL"));
 604         args << "-m" << QString::number(DOWNLOAD_TIMEOUT / 1000);
 605         args << "--max-redirs" << QString::number(maxRedir);
 606         args << "-A" << USER_AGENT_STR;
 607         args << "-e" << QString("%1://%2/;auto").arg(url.scheme(), url.host());
 608         args << "-o" << output.fileName() << url.toString();
 609
 610         return execCurl(args, output.absolutePath(), DOWNLOAD_TIMEOUT);
 611 }
 612
 613 bool MUtils::UpdateChecker::tryContactHost(const QString &hostname, const int &timeoutMsec)
 614 {
 615         log(QString("Connecting to host: %1").arg(hostname), "");
 616
 617         QStringList args(QLatin1String("-vsSNqkI"));
 618         args << "-m" << QString::number(qMax(1, timeoutMsec / 1000));
 619         args << "-A" << USER_AGENT_STR;
 620         args << "-o" << OS::null_device() << QString("http://%1/").arg(hostname);
 621
 622         return execCurl(args, temp_folder(), timeoutMsec);
 623 }
 624
 625 bool MUtils::UpdateChecker::checkSignature(const QString &file, const QString &signature)
 626 {
 627         if (QFileInfo(file).absolutePath().compare(QFileInfo(signature).absolutePath(), Qt::CaseInsensitive) != 0)
 628         {
 629                 qWarning("CheckSignature: File and signature should be in same folder!");
 630                 return false;
 631         }
 632
 633         QString keyRingPath(m_binaryKeys);
 634         bool removeKeyring = false;
 635         if (QFileInfo(file).absolutePath().compare(QFileInfo(m_binaryKeys).absolutePath(), Qt::CaseInsensitive) != 0)
 636         {
 637                 keyRingPath = make_temp_file(QFileInfo(file).absolutePath(), "gpg");
 638                 removeKeyring = true;
 639                 if (!QFile::copy(m_binaryKeys, keyRingPath))
 640                 {
 641                         qWarning("CheckSignature: Failed to copy the key-ring file!");
 642                         return false;
 643                 }
 644         }
 645
 646         QStringList args;
 647         args << QStringList() << "--homedir" << ".";
 648         args << "--keyring" << QFileInfo(keyRingPath).fileName();
 649         args << QFileInfo(signature).fileName();
 650         args << QFileInfo(file).fileName();
 651
 652         const int exitCode = execProcess(m_binaryGnuPG, args, QFileInfo(file).absolutePath(), DOWNLOAD_TIMEOUT);
 653         if (exitCode != INT_MAX)
 654         {
 655                 log(QString().sprintf("Exited with code %d", exitCode));
 656         }
 657
 658         if (removeKeyring)
 659         {
 660                 remove_file(keyRingPath);
 661         }
 662
 663         return (exitCode == 0); /*completed*/
 664 }
 665
 666 bool MUtils::UpdateChecker::execCurl(const QStringList &args, const QString &workingDir, const int timeout)
 667 {
 668         const int exitCode = execProcess(m_binaryCurl, args, workingDir, timeout + (timeout / 2));
 669         if (exitCode != INT_MAX)
 670         {
 671                 switch (exitCode)
 672                 {
 673                         case  0: log(QLatin1String("DONE: Transfer completed successfully."), "");                     break;
 674                         case  6: log(QLatin1String("ERROR: Remote host could not be resolved!"), "");                  break;
 675                         case  7: log(QLatin1String("ERROR: Connection to remote host could not be established!"), ""); break;
 676                         case 22: log(QLatin1String("ERROR: Requested URL was not found or returned an error!"), "");   break;
 677                         case 28: log(QLatin1String("ERROR: Operation timed out !!!"), "");                             break;
 678                         default: log(QString().sprintf("ERROR: Terminated with unknown code %d", exitCode), "");       break;
 679                 }
 680         }
 681
 682         return (exitCode == 0); /*completed*/
 683 }
 684
 685 int MUtils::UpdateChecker::execProcess(const QString &programFile, const QStringList &args, const QString &workingDir, const int timeout)
 686 {
 687         QProcess process;
 688         init_process(process, workingDir, true, NULL, m_environment.data());
 689
 690         QEventLoop loop;
 691         connect(&process, SIGNAL(error(QProcess::ProcessError)), &loop, SLOT(quit()));
 692         connect(&process, SIGNAL(finished(int, QProcess::ExitStatus)), &loop, SLOT(quit()));
 693         connect(&process, SIGNAL(readyRead()), &loop, SLOT(quit()));
 694
 695         QTimer timer;
 696         timer.setSingleShot(true);
 697         connect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
 698
 699         process.start(programFile, args);
 700         if (!process.waitForStarted())
 701         {
 702                 log("PROCESS FAILED TO START !!!", "");
 703                 qWarning("WARNING: %s process could not be created!", MUTILS_UTF8(QFileInfo(programFile).fileName()));
 704                 return INT_MAX; /*failed to start*/
 705         }
 706
 707         bool bAborted = false;
 708         timer.start(qMax(timeout, 1500));
 709
 710         while (process.state() != QProcess::NotRunning)
 711         {
 712                 loop.exec();
 713                 while (process.canReadLine())
 714                 {
 715                         const QString line = QString::fromLatin1(process.readLine()).simplified();
 716                         if (line.length() > 1)
 717                         {
 718                                 log(line);
 719                         }
 720                 }
 721                 const bool bCancelled = MUTILS_BOOLIFY(m_cancelled);
 722                 if (bAborted = (bCancelled || ((!timer.isActive()) && (!process.waitForFinished(125)))))
 723                 {
 724                         log(bCancelled ? "CANCELLED BY USER !!!" : "PROCESS TIMEOUT !!!", "");
 725                         qWarning("WARNING: %s process %s!", MUTILS_UTF8(QFileInfo(programFile).fileName()), bCancelled ? "cancelled" : "timed out");
 726                         break; /*abort process*/
 727                 }
 728         }
 729
 730         timer.stop();
 731         timer.disconnect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
 732
 733         if (bAborted)
 734         {
 735                 process.kill();
 736                 process.waitForFinished(-1);
 737         }
 738
 739         while (process.canReadLine())
 740         {
 741                 const QString line = QString::fromLatin1(process.readLine()).simplified();
 742                 if (line.length() > 1)
 743                 {
 744                         log(line);
 745                 }
 746         }
 747
 748         return bAborted ? INT_MAX : process.exitCode();
 749 }
 750
 751 ////////////////////////////////////////////////////////////
 752 // SLOTS
 753 ////////////////////////////////////////////////////////////
 754
 755 /*NONE*/
 756
 757 ////////////////////////////////////////////////////////////
 758 // EVENTS
 759 ////////////////////////////////////////////////////////////
 760
 761 /*NONE*/