src/UpdateChecker.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // MuldeR's Utilities for Qt
   3 // Copyright (C) 2004-2019 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         const QString tempfolder = QDir::toNativeSeparators(MUtils::temp_folder());
 108         QHash<QString, QString> *const environment = new QHash<QString, QString>();
 109         environment->insert(QLatin1String("CURL_HOME"), tempfolder);
 110         environment->insert(QLatin1String("GNUPGHOME"), tempfolder);
 111         return environment;
 112 }
 113
 114 ////////////////////////////////////////////////////////////
 115 // Update Info Class
 116 ////////////////////////////////////////////////////////////
 117
 118 MUtils::UpdateCheckerInfo::UpdateCheckerInfo(void)
 119 {
 120         resetInfo();
 121 }
 122
 123 void MUtils::UpdateCheckerInfo::resetInfo(void)
 124 {
 125         m_buildNo = 0;
 126         m_buildDate.setDate(1900, 1, 1);
 127         m_downloadSite.clear();
 128         m_downloadAddress.clear();
 129         m_downloadFilename.clear();
 130         m_downloadFilecode.clear();
 131         m_downloadChecksum.clear();
 132 }
 133
 134 bool MUtils::UpdateCheckerInfo::isComplete(void)
 135 {
 136         return (this->m_buildNo > 0) &&
 137                 (this->m_buildDate.year() >= 2010) &&
 138                 (!this->m_downloadSite.isEmpty()) &&
 139                 (!this->m_downloadAddress.isEmpty()) &&
 140                 (!this->m_downloadFilename.isEmpty()) &&
 141                 (!this->m_downloadFilecode.isEmpty()) &&
 142                 (!this->m_downloadChecksum.isEmpty());
 143 }
 144
 145 ////////////////////////////////////////////////////////////
 146 // Constructor & Destructor
 147 ////////////////////////////////////////////////////////////
 148
 149 MUtils::UpdateChecker::UpdateChecker(const QString &binCurl, const QString &binGnuPG, const QString &binKeys, const QString &applicationId, const quint32 &installedBuildNo, const bool betaUpdates, const bool testMode)
 150 :
 151         m_updateInfo(new UpdateCheckerInfo()),
 152         m_binaryCurl(binCurl),
 153         m_binaryGnuPG(binGnuPG),
 154         m_binaryKeys(binKeys),
 155         m_applicationId(applicationId),
 156         m_installedBuildNo(installedBuildNo),
 157         m_betaUpdates(betaUpdates),
 158         m_testMode(testMode),
 159         m_maxProgress(MIN_CONNSCORE + 5),
 160         m_environment(initEnvVars())
 161 {
 162         m_status = UpdateStatus_NotStartedYet;
 163         m_progress = 0;
 164
 165         if(m_binaryCurl.isEmpty() || m_binaryGnuPG.isEmpty() || m_binaryKeys.isEmpty())
 166         {
 167                 MUTILS_THROW("Tools not initialized correctly!");
 168         }
 169 }
 170
 171 MUtils::UpdateChecker::~UpdateChecker(void)
 172 {
 173 }
 174
 175 ////////////////////////////////////////////////////////////
 176 // Public slots
 177 ////////////////////////////////////////////////////////////
 178
 179 void MUtils::UpdateChecker::start(Priority priority)
 180 {
 181         m_success.fetchAndStoreOrdered(0);
 182         m_cancelled.fetchAndStoreOrdered(0);
 183         QThread::start(priority);
 184 }
 185
 186 ////////////////////////////////////////////////////////////
 187 // Protected functions
 188 ////////////////////////////////////////////////////////////
 189
 190 void MUtils::UpdateChecker::run(void)
 191 {
 192         qDebug("Update checker thread started!");
 193         MUTILS_EXCEPTION_HANDLER(m_testMode ? testMirrorsList() : checkForUpdates());
 194         qDebug("Update checker thread completed.");
 195 }
 196
 197 void MUtils::UpdateChecker::checkForUpdates(void)
 198 {
 199         // ----- Initialization ----- //
 200
 201         m_updateInfo->resetInfo();
 202         setProgress(0);
 203
 204         // ----- Test Internet Connection ----- //
 205
 206         log("Checking your Internet connection...", "");
 207         setStatus(UpdateStatus_CheckingConnection);
 208
 209         const int networkStatus = OS::network_status();
 210         if(networkStatus == OS::NETWORK_TYPE_NON)
 211         {
 212                 if (!MUtils::OS::arguments().contains("ignore-network-status"))
 213                 {
 214                         log("Operating system reports that the computer is currently offline !!!");
 215                         setProgress(m_maxProgress);
 216                         setStatus(UpdateStatus_ErrorNoConnection);
 217                         return;
 218                 }
 219         }
 220
 221         msleep(333);
 222         setProgress(1);
 223
 224         // ----- Test Known Hosts Connectivity ----- //
 225
 226         int connectionScore = 0;
 227         QQueue<QString> mirrorList = buildRandomList(known_hosts);
 228
 229         for(int connectionTimeout = 1000; connectionTimeout <= MAX_CONN_TIMEOUT; connectionTimeout *= 2)
 230         {
 231                 QElapsedTimer elapsedTimer;
 232                 elapsedTimer.start();
 233                 const int globalTimeout = 2 * MIN_CONNSCORE * connectionTimeout, count = mirrorList.count();
 234                 for(int i = 0; i < count; ++i)
 235                 {
 236                         Q_ASSERT(!mirrorList.isEmpty());
 237                         const QString hostName = mirrorList.dequeue();
 238                         if (tryContactHost(hostName, connectionTimeout))
 239                         {
 240                                 setProgress(1 + (++connectionScore));
 241                                 if (connectionScore >= MIN_CONNSCORE)
 242                                 {
 243                                         goto endLoop; /*success*/
 244                                 }
 245                         }
 246                         else
 247                         {
 248                                 mirrorList.enqueue(hostName);
 249                                 if(elapsedTimer.hasExpired(globalTimeout))
 250                                 {
 251                                         break; /*timer expired*/
 252                                 }
 253                         }
 254                         CHECK_CANCELLED();
 255                 }
 256         }
 257
 258 endLoop:
 259         if(connectionScore < MIN_CONNSCORE)
 260         {
 261                 log("", "Connectivity test has failed: Internet connection appears to be broken!");
 262                 setProgress(m_maxProgress);
 263                 setStatus(UpdateStatus_ErrorConnectionTestFailed);
 264                 return;
 265         }
 266
 267         // ----- Fetch Update Info From Server ----- //
 268
 269         log("----", "", "Internet connection is operational, checking for updates online...");
 270         setStatus(UpdateStatus_FetchingUpdates);
 271
 272         int mirrorCount = 0;
 273         mirrorList = buildRandomList(update_mirrors);
 274
 275         while(!mirrorList.isEmpty())
 276         {
 277                 const QString currentMirror = mirrorList.takeFirst();
 278                 const bool isQuick = (mirrorCount++ < QUICK_MIRRORS);
 279                 if(tryUpdateMirror(m_updateInfo.data(), currentMirror, isQuick))
 280                 {
 281                         m_success.ref(); /*success*/
 282                         break;
 283                 }
 284                 if (isQuick)
 285                 {
 286                         mirrorList.append(currentMirror); /*re-schedule*/
 287                 }
 288                 CHECK_CANCELLED();
 289                 msleep(1);
 290         }
 291
 292         msleep(333);
 293         setProgress(MIN_CONNSCORE + 5);
 294
 295         // ----- Generate final result ----- //
 296
 297         if(MUTILS_BOOLIFY(m_success))
 298         {
 299                 if(m_updateInfo->m_buildNo > m_installedBuildNo)
 300                 {
 301                         setStatus(UpdateStatus_CompletedUpdateAvailable);
 302                 }
 303                 else if(m_updateInfo->m_buildNo == m_installedBuildNo)
 304                 {
 305                         setStatus(UpdateStatus_CompletedNoUpdates);
 306                 }
 307                 else
 308                 {
 309                         setStatus(UpdateStatus_CompletedNewVersionOlder);
 310                 }
 311         }
 312         else
 313         {
 314                 setStatus(UpdateStatus_ErrorFetchUpdateInfo);
 315         }
 316 }
 317
 318 void MUtils::UpdateChecker::testMirrorsList(void)
 319 {
 320         QQueue<QString> mirrorList;
 321         for(int i = 0; update_mirrors[i]; i++)
 322         {
 323                 mirrorList.enqueue(QString::fromLatin1(update_mirrors[i]));
 324         }
 325
 326         // ----- Test update mirrors ----- //
 327
 328         qDebug("\n[Mirror Sites]");
 329         log("Testing all known mirror sites...", "", "---");
 330
 331         UpdateCheckerInfo updateInfo;
 332         while (!mirrorList.isEmpty())
 333         {
 334                 const QString currentMirror = mirrorList.dequeue();
 335                 bool success = false;
 336                 qDebug("Testing: %s", MUTILS_L1STR(currentMirror));
 337                 log("", "Testing mirror:", currentMirror, "");
 338                 for (quint8 attempt = 0; attempt < 3; ++attempt)
 339                 {
 340                         updateInfo.resetInfo();
 341                         if (tryUpdateMirror(&updateInfo, currentMirror, (!attempt)))
 342                         {
 343                                 success = true;
 344                                 break;
 345                         }
 346                 }
 347                 if (!success)
 348                 {
 349                         qWarning("\nUpdate mirror seems to be unavailable:\n%s\n", MUTILS_L1STR(currentMirror));
 350                 }
 351                 log("", "---");
 352         }
 353
 354         // ----- Test known hosts ----- //
 355
 356         mirrorList.clear();
 357         for (int i = 0; known_hosts[i]; i++)
 358         {
 359                 mirrorList.enqueue(QString::fromLatin1(known_hosts[i]));
 360         }
 361
 362         qDebug("\n[Known Hosts]");
 363         log("Testing all known hosts...", "", "---");
 364
 365         while(!mirrorList.isEmpty())
 366         {
 367                 const QString currentHost = mirrorList.dequeue();
 368                 qDebug("Testing: %s", MUTILS_L1STR(currentHost));
 369                 log(QLatin1String(""), "Testing host:", currentHost, "");
 370                 if (!tryContactHost(currentHost, DOWNLOAD_TIMEOUT))
 371                 {
 372                         qWarning("\nConnectivity test FAILED on the following host:\n%s\n", MUTILS_L1STR(currentHost));
 373                 }
 374                 log("---");
 375         }
 376 }
 377
 378 ////////////////////////////////////////////////////////////
 379 // PRIVATE FUNCTIONS
 380 ////////////////////////////////////////////////////////////
 381
 382 void MUtils::UpdateChecker::setStatus(const int status)
 383 {
 384         if(m_status != status)
 385         {
 386                 m_status = status;
 387                 emit statusChanged(status);
 388         }
 389 }
 390
 391 void MUtils::UpdateChecker::setProgress(const int progress)
 392 {
 393         const int value = qBound(0, progress, m_maxProgress);
 394         if(m_progress != value)
 395         {
 396                 emit progressChanged(m_progress = value);
 397         }
 398 }
 399
 400 void MUtils::UpdateChecker::log(const QString &str1, const QString &str2, const QString &str3, const QString &str4)
 401 {
 402         LOG_MESSAGE_HELPER(str1);
 403         LOG_MESSAGE_HELPER(str2);
 404         LOG_MESSAGE_HELPER(str3);
 405         LOG_MESSAGE_HELPER(str4);
 406 }
 407
 408 bool MUtils::UpdateChecker::tryUpdateMirror(UpdateCheckerInfo *updateInfo, const QString &url, const bool &quick)
 409 {
 410         bool success = false;
 411         log("", "Trying update mirror:", url, "");
 412
 413         if (quick)
 414         {
 415                 setProgress(MIN_CONNSCORE + 1);
 416                 if (!tryContactHost(QUrl(url).host(), (MAX_CONN_TIMEOUT / 8)))
 417                 {
 418                         log("", "Mirror is too slow, skipping!");
 419                         return false;
 420                 }
 421         }
 422
 423         const QString randPart = next_rand_str();
 424         const QString outFileVers = QString("%1/%2.ver").arg(temp_folder(), randPart);
 425         const QString outFileSign = QString("%1/%2.sig").arg(temp_folder(), randPart);
 426
 427         if (!getUpdateInfo(url, outFileVers, outFileSign))
 428         {
 429                 log("", "Oops: Download of update information has failed!");
 430                 goto cleanUp;
 431         }
 432
 433         log("Download completed, verifying signature:", "");
 434         setProgress(MIN_CONNSCORE + 4);
 435         if (!checkSignature(outFileVers, outFileSign))
 436         {
 437                 log("", "Bad signature detected, take care !!!");
 438                 goto cleanUp;
 439         }
 440
 441         log("", "Signature is valid, parsing update information:", "");
 442         success = parseVersionInfo(outFileVers, updateInfo);
 443
 444 cleanUp:
 445         QFile::remove(outFileVers);
 446         QFile::remove(outFileSign);
 447         return success;
 448 }
 449
 450 bool MUtils::UpdateChecker::getUpdateInfo(const QString &url, const QString &outFileVers, const QString &outFileSign)
 451 {
 452         log("Downloading update information:", "");
 453         setProgress(MIN_CONNSCORE + 2);
 454         if(getFile(QUrl(QString("%1%2").arg(url, MIRROR_URL_POSTFIX[m_betaUpdates ? 1 : 0])), outFileVers))
 455         {
 456                 if (!m_cancelled)
 457                 {
 458                         log( "Downloading signature file:", "");
 459                         setProgress(MIN_CONNSCORE + 3);
 460                         if (getFile(QUrl(QString("%1%2.sig2").arg(url, MIRROR_URL_POSTFIX[m_betaUpdates ? 1 : 0])), outFileSign))
 461                         {
 462                                 return true; /*completed*/
 463                         }
 464                 }
 465         }
 466         return false;
 467 }
 468
 469 //----------------------------------------------------------
 470 // PARSE UPDATE INFO
 471 //----------------------------------------------------------
 472
 473 #define _CHECK_HEADER(ID,NAME) \
 474         if (STRICMP(name, (NAME))) \
 475         { \
 476                 sectionId = (ID); \
 477                 continue; \
 478         }
 479
 480 #define _PARSE_TEXT(OUT,KEY) \
 481         if (STRICMP(key, (KEY))) \
 482         { \
 483                 (OUT) = val; \
 484                 break; \
 485         }
 486
 487 #define _PARSE_UINT(OUT,KEY) \
 488         if (STRICMP(key, (KEY))) \
 489         { \
 490                 bool _ok = false; \
 491                 const unsigned int _tmp = val.toUInt(&_ok); \
 492                 if (_ok) \
 493                 { \
 494                         (OUT) = _tmp; \
 495                         break; \
 496                 } \
 497         }
 498
 499 #define _PARSE_DATE(OUT,KEY) \
 500         if (STRICMP(key, (KEY))) \
 501         { \
 502                 const QDate _tmp = QDate::fromString(val, Qt::ISODate); \
 503                 if (_tmp.isValid()) \
 504                 { \
 505                         (OUT) = _tmp; \
 506                         break; \
 507                 } \
 508         }
 509
 510 bool MUtils::UpdateChecker::parseVersionInfo(const QString &file, UpdateCheckerInfo *const updateInfo)
 511 {
 512         updateInfo->resetInfo();
 513
 514         QFile data(file);
 515         if(!data.open(QIODevice::ReadOnly))
 516         {
 517                 qWarning("Cannot open update info file for reading!");
 518                 return false;
 519         }
 520
 521         QDate updateInfoDate;
 522         int sectionId = 0;
 523         QRegExp regex_sec("^\\[(.+)\\]$"), regex_val("^([^=]+)=(.+)$");
 524
 525         while(!data.atEnd())
 526         {
 527                 QString line = QString::fromLatin1(data.readLine()).simplified();
 528                 if (regex_sec.indexIn(line) >= 0)
 529                 {
 530                         sectionId = 0; /*unknown section*/
 531                         const QString name = regex_sec.cap(1).trimmed();
 532                         log(QString("Sec: [%1]").arg(name));
 533                         _CHECK_HEADER(1, GLOBALHEADER_ID)
 534                         _CHECK_HEADER(2, m_applicationId)
 535                         continue;
 536                 }
 537                 if (regex_val.indexIn(line) >= 0)
 538                 {
 539                         const QString key = regex_val.cap(1).trimmed();
 540                         const QString val = regex_val.cap(2).trimmed();
 541                         log(QString("Val: \"%1\" = \"%2\"").arg(key, val));
 542                         switch (sectionId)
 543                         {
 544                         case 1:
 545                                 _PARSE_DATE(updateInfoDate, "TimestampCreated")
 546                                 break;
 547                         case 2:
 548                                 _PARSE_UINT(updateInfo->m_buildNo,          "BuildNo")
 549                                 _PARSE_DATE(updateInfo->m_buildDate,        "BuildDate")
 550                                 _PARSE_TEXT(updateInfo->m_downloadSite,     "DownloadSite")
 551                                 _PARSE_TEXT(updateInfo->m_downloadAddress,  "DownloadAddress")
 552                                 _PARSE_TEXT(updateInfo->m_downloadFilename, "DownloadFilename")
 553                                 _PARSE_TEXT(updateInfo->m_downloadFilecode, "DownloadFilecode")
 554                                 _PARSE_TEXT(updateInfo->m_downloadChecksum, "DownloadChecksum")
 555                                 break;
 556                         }
 557                 }
 558         }
 559
 560         if (!updateInfo->isComplete())
 561         {
 562                 log("", "WARNING: Update information is incomplete!");
 563                 goto failure;
 564         }
 565
 566         if(updateInfoDate.isValid())
 567         {
 568                 const QDate expiredDate = updateInfoDate.addMonths(VERSION_INFO_EXPIRES_MONTHS);
 569                 if (expiredDate < OS::current_date())
 570                 {
 571                         log("", QString("WARNING: Update information has expired at %1!").arg(expiredDate.toString(Qt::ISODate)));
 572                         goto failure;
 573                 }
 574         }
 575         else
 576         {
 577                 log("", "WARNING: Timestamp is missing from update information header!");
 578                 goto failure;
 579         }
 580
 581         log("", "Success: Update information is complete.");
 582         return true; /*success*/
 583
 584 failure:
 585         updateInfo->resetInfo();
 586         return false;
 587 }
 588
 589 //----------------------------------------------------------
 590 // EXTERNAL TOOLS
 591 //----------------------------------------------------------
 592
 593 bool MUtils::UpdateChecker::getFile(const QUrl &url, const QString &outFile, const unsigned int maxRedir)
 594 {
 595         QFileInfo output(outFile);
 596         output.setCaching(false);
 597
 598         if (output.exists())
 599         {
 600                 QFile::remove(output.canonicalFilePath());
 601                 if (output.exists())
 602                 {
 603                         qWarning("Existing output file could not be found!");
 604                         return false;
 605                 }
 606         }
 607
 608         QStringList args(QLatin1String("-vsSNqkfL"));
 609         args << "-m" << QString::number(DOWNLOAD_TIMEOUT / 1000);
 610         args << "--max-redirs" << QString::number(maxRedir);
 611         args << "-A" << USER_AGENT_STR;
 612         args << "-e" << QString("%1://%2/;auto").arg(url.scheme(), url.host());
 613         args << "-o" << output.fileName() << url.toString();
 614
 615         return execCurl(args, output.absolutePath(), DOWNLOAD_TIMEOUT);
 616 }
 617
 618 bool MUtils::UpdateChecker::tryContactHost(const QString &hostname, const int &timeoutMsec)
 619 {
 620         log(QString("Connecting to host: %1").arg(hostname), "");
 621
 622         QStringList args(QLatin1String("-vsSNqkI"));
 623         args << "-m" << QString::number(qMax(1, timeoutMsec / 1000));
 624         args << "-A" << USER_AGENT_STR;
 625         args << "-o" << OS::null_device() << QString("http://%1/").arg(hostname);
 626
 627         return execCurl(args, temp_folder(), timeoutMsec);
 628 }
 629
 630 bool MUtils::UpdateChecker::checkSignature(const QString &file, const QString &signature)
 631 {
 632         if (QFileInfo(file).absolutePath().compare(QFileInfo(signature).absolutePath(), Qt::CaseInsensitive) != 0)
 633         {
 634                 qWarning("CheckSignature: File and signature should be in same folder!");
 635                 return false;
 636         }
 637
 638         QString keyRingPath(m_binaryKeys);
 639         bool removeKeyring = false;
 640         if (QFileInfo(file).absolutePath().compare(QFileInfo(m_binaryKeys).absolutePath(), Qt::CaseInsensitive) != 0)
 641         {
 642                 keyRingPath = make_temp_file(QFileInfo(file).absolutePath(), "gpg");
 643                 removeKeyring = true;
 644                 if (!QFile::copy(m_binaryKeys, keyRingPath))
 645                 {
 646                         qWarning("CheckSignature: Failed to copy the key-ring file!");
 647                         return false;
 648                 }
 649         }
 650
 651         QStringList args;
 652         args << QStringList() << "--homedir" << ".";
 653         args << "--keyring" << QFileInfo(keyRingPath).fileName();
 654         args << QFileInfo(signature).fileName();
 655         args << QFileInfo(file).fileName();
 656
 657         const int exitCode = execProcess(m_binaryGnuPG, args, QFileInfo(file).absolutePath(), DOWNLOAD_TIMEOUT);
 658         if (exitCode != INT_MAX)
 659         {
 660                 log(QString().sprintf("Exited with code %d", exitCode));
 661         }
 662
 663         if (removeKeyring)
 664         {
 665                 remove_file(keyRingPath);
 666         }
 667
 668         return (exitCode == 0); /*completed*/
 669 }
 670
 671 bool MUtils::UpdateChecker::execCurl(const QStringList &args, const QString &workingDir, const int timeout)
 672 {
 673         const int exitCode = execProcess(m_binaryCurl, args, workingDir, timeout + (timeout / 2));
 674         if (exitCode != INT_MAX)
 675         {
 676                 switch (exitCode)
 677                 {
 678                         case  0: log(QLatin1String("DONE: Transfer completed successfully."), "");                     break;
 679                         case  6: log(QLatin1String("ERROR: Remote host could not be resolved!"), "");                  break;
 680                         case  7: log(QLatin1String("ERROR: Connection to remote host could not be established!"), ""); break;
 681                         case 22: log(QLatin1String("ERROR: Requested URL was not found or returned an error!"), "");   break;
 682                         case 28: log(QLatin1String("ERROR: Operation timed out !!!"), "");                             break;
 683                         default: log(QString().sprintf("ERROR: Terminated with unknown code %d", exitCode), "");       break;
 684                 }
 685         }
 686
 687         return (exitCode == 0); /*completed*/
 688 }
 689
 690 int MUtils::UpdateChecker::execProcess(const QString &programFile, const QStringList &args, const QString &workingDir, const int timeout)
 691 {
 692         QProcess process;
 693         init_process(process, workingDir, true, NULL, m_environment.data());
 694
 695         QEventLoop loop;
 696         connect(&process, SIGNAL(error(QProcess::ProcessError)), &loop, SLOT(quit()));
 697         connect(&process, SIGNAL(finished(int, QProcess::ExitStatus)), &loop, SLOT(quit()));
 698         connect(&process, SIGNAL(readyRead()), &loop, SLOT(quit()));
 699
 700         QTimer timer;
 701         timer.setSingleShot(true);
 702         connect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
 703
 704         process.start(programFile, args);
 705         if (!process.waitForStarted())
 706         {
 707                 log("PROCESS FAILED TO START !!!", "");
 708                 qWarning("WARNING: %s process could not be created!", MUTILS_UTF8(QFileInfo(programFile).fileName()));
 709                 return INT_MAX; /*failed to start*/
 710         }
 711
 712         bool bAborted = false;
 713         timer.start(qMax(timeout, 1500));
 714
 715         while (process.state() != QProcess::NotRunning)
 716         {
 717                 loop.exec();
 718                 while (process.canReadLine())
 719                 {
 720                         const QString line = QString::fromLatin1(process.readLine()).simplified();
 721                         if (line.length() > 1)
 722                         {
 723                                 log(line);
 724                         }
 725                 }
 726                 const bool bCancelled = MUTILS_BOOLIFY(m_cancelled);
 727                 if (bAborted = (bCancelled || ((!timer.isActive()) && (!process.waitForFinished(125)))))
 728                 {
 729                         log(bCancelled ? "CANCELLED BY USER !!!" : "PROCESS TIMEOUT !!!", "");
 730                         qWarning("WARNING: %s process %s!", MUTILS_UTF8(QFileInfo(programFile).fileName()), bCancelled ? "cancelled" : "timed out");
 731                         break; /*abort process*/
 732                 }
 733         }
 734
 735         timer.stop();
 736         timer.disconnect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
 737
 738         if (bAborted)
 739         {
 740                 process.kill();
 741                 process.waitForFinished(-1);
 742         }
 743
 744         while (process.canReadLine())
 745         {
 746                 const QString line = QString::fromLatin1(process.readLine()).simplified();
 747                 if (line.length() > 1)
 748                 {
 749                         log(line);
 750                 }
 751         }
 752
 753         return bAborted ? INT_MAX : process.exitCode();
 754 }
 755
 756 ////////////////////////////////////////////////////////////
 757 // SLOTS
 758 ////////////////////////////////////////////////////////////
 759
 760 /*NONE*/
 761
 762 ////////////////////////////////////////////////////////////
 763 // EVENTS
 764 ////////////////////////////////////////////////////////////
 765
 766 /*NONE*/