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 connectionTimout = 1000; connectionTimout <= MAX_CONN_TIMEOUT; connectionTimout *= 2)
 228         {
 229                 QElapsedTimer elapsedTimer;
 230                 elapsedTimer.start();
 231                 const qint64 globalTimeout = 2 * MIN_CONNSCORE * connectionTimout;
 232                 forever
 233                 {
 234                         if (mirrorList.isEmpty())
 235                         {
 236                                 goto endLoop; /*depleted!*/
 237                         }
 238                         const QString hostName = mirrorList.dequeue();
 239                         if (tryContactHost(hostName, connectionTimout))
 240                         {
 241                                 setProgress(1 + (++connectionScore));
 242                                 if (connectionScore >= MIN_CONNSCORE)
 243                                 {
 244                                         goto endLoop; /*success*/
 245                                 }
 246                         }
 247                         else
 248                         {
 249                                 mirrorList.enqueue(hostName);
 250                                 if(elapsedTimer.hasExpired(globalTimeout))
 251                                 {
 252                                         break; /*timer expired*/
 253                                 }
 254                         }
 255                         CHECK_CANCELLED();
 256                 }
 257         }
 258
 259 endLoop:
 260         if(connectionScore < MIN_CONNSCORE)
 261         {
 262                 log("", "Connectivity test has failed: Internet connection appears to be broken!");
 263                 setProgress(m_maxProgress);
 264                 setStatus(UpdateStatus_ErrorConnectionTestFailed);
 265                 return;
 266         }
 267
 268         // ----- Fetch Update Info From Server ----- //
 269
 270         log("----", "", "Internet connection is operational, checking for updates online...");
 271         setStatus(UpdateStatus_FetchingUpdates);
 272
 273         int mirrorCount = 0;
 274         mirrorList = buildRandomList(update_mirrors);
 275
 276         while(!mirrorList.isEmpty())
 277         {
 278                 const QString currentMirror = mirrorList.takeFirst();
 279                 const bool isQuick = (mirrorCount++ < QUICK_MIRRORS);
 280                 if(tryUpdateMirror(m_updateInfo.data(), currentMirror, isQuick))
 281                 {
 282                         m_success.ref(); /*success*/
 283                         break;
 284                 }
 285                 if (isQuick)
 286                 {
 287                         mirrorList.append(currentMirror); /*re-schedule*/
 288                 }
 289                 CHECK_CANCELLED();
 290                 msleep(1);
 291         }
 292
 293         msleep(333);
 294         setProgress(MIN_CONNSCORE + 5);
 295
 296         // ----- Generate final result ----- //
 297
 298         if(MUTILS_BOOLIFY(m_success))
 299         {
 300                 if(m_updateInfo->m_buildNo > m_installedBuildNo)
 301                 {
 302                         setStatus(UpdateStatus_CompletedUpdateAvailable);
 303                 }
 304                 else if(m_updateInfo->m_buildNo == m_installedBuildNo)
 305                 {
 306                         setStatus(UpdateStatus_CompletedNoUpdates);
 307                 }
 308                 else
 309                 {
 310                         setStatus(UpdateStatus_CompletedNewVersionOlder);
 311                 }
 312         }
 313         else
 314         {
 315                 setStatus(UpdateStatus_ErrorFetchUpdateInfo);
 316         }
 317 }
 318
 319 void MUtils::UpdateChecker::testMirrorsList(void)
 320 {
 321         QStringList mirrorList;
 322         for(int i = 0; update_mirrors[i]; i++)
 323         {
 324                 mirrorList << QString::fromLatin1(update_mirrors[i]);
 325         }
 326
 327         // ----- Test update mirrors ----- //
 328
 329         qDebug("\n[Mirror Sites]");
 330         log("Testing all known mirror sites...", "", "---");
 331
 332         UpdateCheckerInfo updateInfo;
 333         while (!mirrorList.isEmpty())
 334         {
 335                 const QString currentMirror = mirrorList.takeFirst();
 336                 bool success = false;
 337                 qDebug("Testing: %s", MUTILS_L1STR(currentMirror));
 338                 log("", "Testing:", currentMirror, "");
 339                 for (quint8 attempt = 0; attempt < 3; ++attempt)
 340                 {
 341                         updateInfo.resetInfo();
 342                         if (tryUpdateMirror(&updateInfo, currentMirror, (!attempt)))
 343                         {
 344                                 success = true;
 345                                 break;
 346                         }
 347                 }
 348                 if (!success)
 349                 {
 350                         qWarning("\nUpdate mirror seems to be unavailable:\n%s\n", MUTILS_L1STR(currentMirror));
 351                 }
 352                 log("", "---");
 353         }
 354
 355         // ----- Test known hosts ----- //
 356
 357         QStringList knownHostList;
 358         for (int i = 0; known_hosts[i]; i++)
 359         {
 360                 knownHostList << QString::fromLatin1(known_hosts[i]);
 361         }
 362
 363         qDebug("\n[Known Hosts]");
 364         log("Testing all known hosts...", "", "---");
 365
 366         while(!knownHostList.isEmpty())
 367         {
 368                 const QString currentHost = knownHostList.takeFirst();
 369                 qDebug("Testing: %s", MUTILS_L1STR(currentHost));
 370                 log(QLatin1String(""), "Testing:", currentHost, "");
 371                 if (!tryContactHost(currentHost, DOWNLOAD_TIMEOUT))
 372                 {
 373                         qWarning("\nConnectivity test FAILED on the following host:\n%s\n", MUTILS_L1STR(currentHost));
 374                 }
 375                 log("---");
 376         }
 377 }
 378
 379 ////////////////////////////////////////////////////////////
 380 // PRIVATE FUNCTIONS
 381 ////////////////////////////////////////////////////////////
 382
 383 void MUtils::UpdateChecker::setStatus(const int status)
 384 {
 385         if(m_status != status)
 386         {
 387                 m_status = status;
 388                 emit statusChanged(status);
 389         }
 390 }
 391
 392 void MUtils::UpdateChecker::setProgress(const int progress)
 393 {
 394         const int value = qBound(0, progress, m_maxProgress);
 395         if(m_progress != value)
 396         {
 397                 emit progressChanged(m_progress = value);
 398         }
 399 }
 400
 401 void MUtils::UpdateChecker::log(const QString &str1, const QString &str2, const QString &str3, const QString &str4)
 402 {
 403         LOG_MESSAGE_HELPER(str1);
 404         LOG_MESSAGE_HELPER(str2);
 405         LOG_MESSAGE_HELPER(str3);
 406         LOG_MESSAGE_HELPER(str4);
 407 }
 408
 409 bool MUtils::UpdateChecker::tryUpdateMirror(UpdateCheckerInfo *updateInfo, const QString &url, const bool &quick)
 410 {
 411         bool success = false;
 412         log("", "Trying update mirror:", url, "");
 413
 414         if (quick)
 415         {
 416                 setProgress(MIN_CONNSCORE + 1);
 417                 if (!tryContactHost(QUrl(url).host(), (MAX_CONN_TIMEOUT / 8)))
 418                 {
 419                         log("", "Mirror is too slow, skipping!");
 420                         return false;
 421                 }
 422         }
 423
 424         const QString randPart = next_rand_str();
 425         const QString outFileVers = QString("%1/%2.ver").arg(temp_folder(), randPart);
 426         const QString outFileSign = QString("%1/%2.sig").arg(temp_folder(), randPart);
 427
 428         if (!getUpdateInfo(url, outFileVers, outFileSign))
 429         {
 430                 log("", "Oops: Download of update information has failed!");
 431                 goto cleanUp;
 432         }
 433
 434         log("Download completed, verifying signature:", "");
 435         setProgress(MIN_CONNSCORE + 4);
 436         if (!checkSignature(outFileVers, outFileSign))
 437         {
 438                 log("", "Bad signature detected, take care !!!");
 439                 goto cleanUp;
 440         }
 441
 442         log("", "Signature is valid, parsing update information:", "");
 443         success = parseVersionInfo(outFileVers, updateInfo);
 444
 445 cleanUp:
 446         QFile::remove(outFileVers);
 447         QFile::remove(outFileSign);
 448         return success;
 449 }
 450
 451 bool MUtils::UpdateChecker::getUpdateInfo(const QString &url, const QString &outFileVers, const QString &outFileSign)
 452 {
 453         log("Downloading update information:", "");
 454         setProgress(MIN_CONNSCORE + 2);
 455         if(getFile(QUrl(QString("%1%2").arg(url, MIRROR_URL_POSTFIX[m_betaUpdates ? 1 : 0])), outFileVers))
 456         {
 457                 if (!m_cancelled)
 458                 {
 459                         log( "Downloading signature file:", "");
 460                         setProgress(MIN_CONNSCORE + 3);
 461                         if (getFile(QUrl(QString("%1%2.sig2").arg(url, MIRROR_URL_POSTFIX[m_betaUpdates ? 1 : 0])), outFileSign))
 462                         {
 463                                 return true; /*completed*/
 464                         }
 465                 }
 466         }
 467         return false;
 468 }
 469
 470 //----------------------------------------------------------
 471 // PARSE UPDATE INFO
 472 //----------------------------------------------------------
 473
 474 #define _CHECK_HEADER(ID,NAME) \
 475         if (STRICMP(name, (NAME))) \
 476         { \
 477                 sectionId = (ID); \
 478                 continue; \
 479         }
 480
 481 #define _PARSE_TEXT(OUT,KEY) \
 482         if (STRICMP(key, (KEY))) \
 483         { \
 484                 (OUT) = val; \
 485                 break; \
 486         }
 487
 488 #define _PARSE_UINT(OUT,KEY) \
 489         if (STRICMP(key, (KEY))) \
 490         { \
 491                 bool _ok = false; \
 492                 const unsigned int _tmp = val.toUInt(&_ok); \
 493                 if (_ok) \
 494                 { \
 495                         (OUT) = _tmp; \
 496                         break; \
 497                 } \
 498         }
 499
 500 #define _PARSE_DATE(OUT,KEY) \
 501         if (STRICMP(key, (KEY))) \
 502         { \
 503                 const QDate _tmp = QDate::fromString(val, Qt::ISODate); \
 504                 if (_tmp.isValid()) \
 505                 { \
 506                         (OUT) = _tmp; \
 507                         break; \
 508                 } \
 509         }
 510
 511 bool MUtils::UpdateChecker::parseVersionInfo(const QString &file, UpdateCheckerInfo *const updateInfo)
 512 {
 513         updateInfo->resetInfo();
 514
 515         QFile data(file);
 516         if(!data.open(QIODevice::ReadOnly))
 517         {
 518                 qWarning("Cannot open update info file for reading!");
 519                 return false;
 520         }
 521
 522         QDate updateInfoDate;
 523         int sectionId = 0;
 524         QRegExp regex_sec("^\\[(.+)\\]$"), regex_val("^([^=]+)=(.+)$");
 525
 526         while(!data.atEnd())
 527         {
 528                 QString line = QString::fromLatin1(data.readLine()).trimmed();
 529                 if (regex_sec.indexIn(line) >= 0)
 530                 {
 531                         sectionId = 0; /*unknown section*/
 532                         const QString name = regex_sec.cap(1).trimmed();
 533                         log(QString("Sec: [%1]").arg(name));
 534                         _CHECK_HEADER(1, GLOBALHEADER_ID)
 535                         _CHECK_HEADER(2, m_applicationId)
 536                         continue;
 537                 }
 538                 if (regex_val.indexIn(line) >= 0)
 539                 {
 540                         const QString key = regex_val.cap(1).trimmed();
 541                         const QString val = regex_val.cap(2).trimmed();
 542                         log(QString("Val: \"%1\" = \"%2\"").arg(key, val));
 543                         switch (sectionId)
 544                         {
 545                         case 1:
 546                                 _PARSE_DATE(updateInfoDate, "TimestampCreated")
 547                                 break;
 548                         case 2:
 549                                 _PARSE_UINT(updateInfo->m_buildNo,          "BuildNo")
 550                                 _PARSE_DATE(updateInfo->m_buildDate,        "BuildDate")
 551                                 _PARSE_TEXT(updateInfo->m_downloadSite,     "DownloadSite")
 552                                 _PARSE_TEXT(updateInfo->m_downloadAddress,  "DownloadAddress")
 553                                 _PARSE_TEXT(updateInfo->m_downloadFilename, "DownloadFilename")
 554                                 _PARSE_TEXT(updateInfo->m_downloadFilecode, "DownloadFilecode")
 555                                 _PARSE_TEXT(updateInfo->m_downloadChecksum, "DownloadChecksum")
 556                                 break;
 557                         }
 558                 }
 559         }
 560
 561         if (!updateInfo->isComplete())
 562         {
 563                 log("", "WARNING: Update information is incomplete!");
 564                 goto failure;
 565         }
 566
 567         if(updateInfoDate.isValid())
 568         {
 569                 const QDate expiredDate = updateInfoDate.addMonths(VERSION_INFO_EXPIRES_MONTHS);
 570                 if (expiredDate < OS::current_date())
 571                 {
 572                         log("", QString("WARNING: Update information has expired at %1!").arg(expiredDate.toString(Qt::ISODate)));
 573                         goto failure;
 574                 }
 575         }
 576         else
 577         {
 578                 log("", "WARNING: Timestamp is missing from update information header!");
 579                 goto failure;
 580         }
 581
 582         log("", "Success: Update information is complete.");
 583         return true; /*success*/
 584
 585 failure:
 586         updateInfo->resetInfo();
 587         return false;
 588 }
 589
 590 //----------------------------------------------------------
 591 // EXTERNAL TOOLS
 592 //----------------------------------------------------------
 593
 594 bool MUtils::UpdateChecker::getFile(const QUrl &url, const QString &outFile, const unsigned int maxRedir)
 595 {
 596         QFileInfo output(outFile);
 597         output.setCaching(false);
 598
 599         if (output.exists())
 600         {
 601                 QFile::remove(output.canonicalFilePath());
 602                 if (output.exists())
 603                 {
 604                         qWarning("Existing output file could not be found!");
 605                         return false;
 606                 }
 607         }
 608
 609         QStringList args(QLatin1String("-vsSNqkfL"));
 610         args << "-m" << QString::number(DOWNLOAD_TIMEOUT / 1000);
 611         args << "--max-redirs" << QString::number(maxRedir);
 612         args << "-A" << USER_AGENT_STR;
 613         args << "-e" << QString("%1://%2/;auto").arg(url.scheme(), url.host());
 614         args << "-o" << output.fileName() << url.toString();
 615
 616         return execCurl(args, output.absolutePath(), DOWNLOAD_TIMEOUT);
 617 }
 618
 619 bool MUtils::UpdateChecker::tryContactHost(const QString &hostname, const int &timeoutMsec)
 620 {
 621         log(QString("Connecting to host: %1").arg(hostname), "");
 622
 623         QStringList args(QLatin1String("-vsSNqkI"));
 624         args << "-m" << QString::number(qMax(1, timeoutMsec / 1000));
 625         args << "-A" << USER_AGENT_STR;
 626         args << "-o" << OS::null_device() << QString("http://%1/").arg(hostname);
 627
 628         return execCurl(args, temp_folder(), timeoutMsec);
 629 }
 630
 631 bool MUtils::UpdateChecker::checkSignature(const QString &file, const QString &signature)
 632 {
 633         if (QFileInfo(file).absolutePath().compare(QFileInfo(signature).absolutePath(), Qt::CaseInsensitive) != 0)
 634         {
 635                 qWarning("CheckSignature: File and signature should be in same folder!");
 636                 return false;
 637         }
 638
 639         QString keyRingPath(m_binaryKeys);
 640         bool removeKeyring = false;
 641         if (QFileInfo(file).absolutePath().compare(QFileInfo(m_binaryKeys).absolutePath(), Qt::CaseInsensitive) != 0)
 642         {
 643                 keyRingPath = make_temp_file(QFileInfo(file).absolutePath(), "gpg");
 644                 removeKeyring = true;
 645                 if (!QFile::copy(m_binaryKeys, keyRingPath))
 646                 {
 647                         qWarning("CheckSignature: Failed to copy the key-ring file!");
 648                         return false;
 649                 }
 650         }
 651
 652         QStringList args;
 653         args << QStringList() << "--homedir" << ".";
 654         args << "--keyring" << QFileInfo(keyRingPath).fileName();
 655         args << QFileInfo(signature).fileName();
 656         args << QFileInfo(file).fileName();
 657
 658         const int exitCode = execProcess(m_binaryGnuPG, args, QFileInfo(file).absolutePath(), DOWNLOAD_TIMEOUT);
 659         if (exitCode != INT_MAX)
 660         {
 661                 log(QString().sprintf("Exited with code %d", exitCode));
 662         }
 663
 664         if (removeKeyring)
 665         {
 666                 remove_file(keyRingPath);
 667         }
 668
 669         return (exitCode == 0); /*completed*/
 670 }
 671
 672 bool MUtils::UpdateChecker::execCurl(const QStringList &args, const QString &workingDir, const int timeout)
 673 {
 674         const int exitCode = execProcess(m_binaryCurl, args, workingDir, timeout + (timeout / 2));
 675         if (exitCode != INT_MAX)
 676         {
 677                 switch (exitCode)
 678                 {
 679                         case  0: log(QLatin1String("DONE: Transfer completed successfully."), "");                     break;
 680                         case  6: log(QLatin1String("ERROR: Remote host could not be resolved!"), "");                  break;
 681                         case  7: log(QLatin1String("ERROR: Connection to remote host could not be established!"), ""); break;
 682                         case 22: log(QLatin1String("ERROR: Requested URL was not found or returned an error!"), "");   break;
 683                         case 28: log(QLatin1String("ERROR: Operation timed out !!!"), "");                             break;
 684                         default: log(QString().sprintf("ERROR: Terminated with unknown code %d", exitCode), "");       break;
 685                 }
 686         }
 687
 688         return (exitCode == 0); /*completed*/
 689 }
 690
 691 int MUtils::UpdateChecker::execProcess(const QString &programFile, const QStringList &args, const QString &workingDir, const int timeout)
 692 {
 693         QProcess process;
 694         init_process(process, workingDir, true, NULL, m_environment.data());
 695
 696         QEventLoop loop;
 697         connect(&process, SIGNAL(error(QProcess::ProcessError)), &loop, SLOT(quit()));
 698         connect(&process, SIGNAL(finished(int, QProcess::ExitStatus)), &loop, SLOT(quit()));
 699         connect(&process, SIGNAL(readyRead()), &loop, SLOT(quit()));
 700
 701         QTimer timer;
 702         timer.setSingleShot(true);
 703         connect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
 704
 705         process.start(programFile, args);
 706         if (!process.waitForStarted())
 707         {
 708                 log("PROCESS FAILED TO START !!!", "");
 709                 qWarning("WARNING: %s process could not be created!", MUTILS_UTF8(QFileInfo(programFile).fileName()));
 710                 return INT_MAX; /*failed to start*/
 711         }
 712
 713         bool bAborted = false;
 714         timer.start(qMax(timeout, 1500));
 715
 716         while (process.state() != QProcess::NotRunning)
 717         {
 718                 loop.exec();
 719                 while (process.canReadLine())
 720                 {
 721                         const QString line = QString::fromLatin1(process.readLine()).simplified();
 722                         if (line.length() > 1)
 723                         {
 724                                 log(line);
 725                         }
 726                 }
 727                 const bool bCancelled = MUTILS_BOOLIFY(m_cancelled);
 728                 if (bAborted = (bCancelled || ((!timer.isActive()) && (!process.waitForFinished(125)))))
 729                 {
 730                         log(bCancelled ? "CANCELLED BY USER !!!" : "PROCESS TIMEOUT !!!", "");
 731                         qWarning("WARNING: %s process %s!", MUTILS_UTF8(QFileInfo(programFile).fileName()), bCancelled ? "cancelled" : "timed out");
 732                         break; /*abort process*/
 733                 }
 734         }
 735
 736         timer.stop();
 737         timer.disconnect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
 738
 739         if (bAborted)
 740         {
 741                 process.kill();
 742                 process.waitForFinished(-1);
 743         }
 744
 745         while (process.canReadLine())
 746         {
 747                 const QString line = QString::fromLatin1(process.readLine()).simplified();
 748                 if (line.length() > 1)
 749                 {
 750                         log(line);
 751                 }
 752         }
 753
 754         return bAborted ? INT_MAX : process.exitCode();
 755 }
 756
 757 ////////////////////////////////////////////////////////////
 758 // SLOTS
 759 ////////////////////////////////////////////////////////////
 760
 761 /*NONE*/
 762
 763 ////////////////////////////////////////////////////////////
 764 // EVENTS
 765 ////////////////////////////////////////////////////////////
 766
 767 /*NONE*/