Add platform and Tomahawk version checks to resolver installation.

src/SettingsDialog.cpp

@@ -51,6 +51,9 @@
 #include "accounts/spotify/SpotifyAccount.h"
 #include "thirdparty/Qocoa/qtoolbartabdialog.h"
 #include "thirdparty/Qocoa/qbutton.h"
+#include "jobview/JobStatusView.h"
+#include "jobview/JobStatusModel.h"
+#include "jobview/ErrorStatusMessage.h"
 
 #include <QDesktopServices>
 #include <QFileDialog>
@@ -491,7 +494,18 @@ SettingsDialog::installFromFile()
 
         Account* acct = AccountManager::instance()->accountFromPath( resolver );
 
-        Q_ASSERT( acct );
+        if ( !acct )
+        {
+            QFileInfo fi( resolver );
+
+            JobStatusView::instance()->model()->addJob( new ErrorStatusMessage(
+                                    tr( "Resolver installation from file %1 failed." )
+                                    .arg( fi.fileName() ) ) );
+
+            tDebug() << "Resolver was not installed:" << resolver;
+            return;
+        }
+
         AccountManager::instance()->addAccount( acct );
         TomahawkSettings::instance()->addAccount( acct->accountId() );
         AccountManager::instance()->enableAccount( acct );

src/libtomahawk/accounts/ResolverAccount.cpp

@@ -28,6 +28,10 @@
 #include "Source.h"
 #include "utils/Logger.h"
 #include "qjson/parser.h"
+#include "jobview/JobStatusView.h"
+#include "jobview/JobStatusModel.h"
+#include "jobview/ErrorStatusMessage.h"
+#include "TomahawkVersion.h"
 
 #include <QFile>
 #include <QFileInfo>
@@ -93,10 +97,18 @@ ResolverAccountFactory::createFromPath( const QString& path, const QString& fact
                                                            uniqueName,
                                                            MANUALRESOLVERS_DIR ) );
             if ( !( dir.exists() && dir.isReadable() ) ) //decompression fubar
+            {
+                JobStatusView::instance()->model()->addJob( new ErrorStatusMessage(
+                                        tr( "Resolver installation error: cannot open bundle." ) ) );
                 return 0;
+            }
 
             if ( !dir.cd( "content" ) ) //more fubar
+            {
+                JobStatusView::instance()->model()->addJob( new ErrorStatusMessage(
+                                        tr( "Resolver installation error: incomplete bundle." ) ) );
                 return 0;
+            }
 
             QString metadataFilePath = dir.absoluteFilePath( "metadata.json" );
             configuration = metadataFromJsonFile( metadataFilePath );
@@ -131,7 +143,11 @@ ResolverAccountFactory::createFromPath( const QString& path, const QString& fact
 
             realPath = configuration[ "path" ].toString();
             if ( realPath.isEmpty() )
+            {
+                JobStatusView::instance()->model()->addJob( new ErrorStatusMessage(
+                                        tr( "Resolver installation error: bad metadata in bundle." ) ) );
                 return 0;
+            }
         }
         else //either legacy resolver or uncompressed bundle, so we look for a metadata file
         {
@@ -146,6 +162,46 @@ ResolverAccountFactory::createFromPath( const QString& path, const QString& fact
             //else we just have empty metadata (legacy resolver without desktop file)
         }
 
+        //check if the bundle specifies a platform, and if so, reject the resolver if the platform is wrong
+        if ( !configuration[ "platform" ].isNull() && configuration[ "platform" ].toString() != "any" )
+        {
+            QString platform( configuration[ "platform" ].toString() );
+            QString myPlatform( "any" );
+
+#if defined( Q_OS_WIN )
+            myPlatform = "win";
+#elif defined( Q_OS_MAC )
+            myPlatform = "osx";
+#elif defined( Q_OS_LINUX )
+            if ( __WORDSIZE == 32 )
+                myPlatform = "linux-x86";
+            else if ( __WORDSIZE == 64 )
+                myPlatform = "linux-x64";
+#endif
+
+            if ( !myPlatform.contains( platform ) )
+            {
+                tDebug() << "Wrong resolver platform.";
+                JobStatusView::instance()->model()->addJob( new ErrorStatusMessage(
+                                        tr( "Resolver installation error: platform mismatch." ) ) );
+                return 0;
+            }
+        }
+
+        if ( !configuration[ "tomahawkVersion" ].isNull() )
+        {
+            QString thVer = TOMAHAWK_VERSION;
+            QString requiredVer = configuration[ "tomahawkVersion" ].toString();
+
+            if ( TomahawkUtils::compareVersionStrings( thVer, requiredVer ) < 0 )
+            {
+                JobStatusView::instance()->model()->addJob( new ErrorStatusMessage(
+                                        tr( "Resolver installation error: Tomahawk %1 or newer is required." )
+                                        .arg( requiredVer ) ) );
+                return 0;
+            }
+        }
+
         //TODO: handle multi-account resolvers
 
         return new ResolverAccount( generateId( factory ), realPath, configuration );
@@ -187,6 +243,10 @@ ResolverAccountFactory::metadataFromJsonFile( const QString& path )
                 result[ "revision" ] = variant[ "revision" ];
             if ( !variant[ "timestamp" ].isNull() )
                 result[ "timestamp" ] = variant[ "timestamp" ];
+            if ( !variant[ "tomahawkVersion" ].isNull() )
+                result[ "tomahawkVersion" ] = variant[ "tomahawkVersion" ];
+            if ( !variant[ "platform" ].isNull() )
+                result[ "platform" ] = variant[ "platform" ];
         }
     }
     return result;

src/libtomahawk/utils/TomahawkUtils.cpp

@@ -45,6 +45,7 @@
 #include <QMutex>
 #include <QCryptographicHash>
 #include <QProcess>
+#include <QStringList>
 #include <QTranslator>
 
 #if QT_VERSION >= QT_VERSION_CHECK( 5, 0, 0 )
@@ -1013,6 +1014,53 @@ whitelistedHttpResultHint( const QString& url )
 }
 
 
+int
+compareVersionStrings( const QString& first, const QString& second )
+{
+    QStringList a = first.split( '.', QString::SkipEmptyParts );
+    QStringList b = second.split( '.', QString::SkipEmptyParts );
+
+    const int depth = qMax( a.count(), b.count() );
+
+    while ( a.count() < depth )
+        a.append( "0" );
+
+    while ( b.count() < depth )
+        b.append( "0" );
+
+    int verdict = 0;
+    for ( int i = 0; i < depth; ++i )
+    {
+        bool aOk;
+        int aNumber = a.at( i ).toInt( &aOk );
+        bool bOk;
+        int bNumber = b.at( i ).toInt( &bOk );
+
+        if ( aOk && bOk )
+        {
+            if ( aNumber < bNumber )
+            {
+                verdict = -1;
+                break;
+            }
+            if ( aNumber > bNumber )
+            {
+                verdict = 1;
+                break;
+            }
+        }
+        else //fallback: string comparison
+        {
+            verdict = a.at( i ).compare( b.at( i ) );
+            if ( verdict != 0 )
+                break;
+        }
+    }
+
+    return verdict;
+}
+
+
 void
 urlAddQueryItem( QUrl& url, const QString& key, const QString& value )
 {

src/libtomahawk/utils/TomahawkUtils.h

@@ -206,6 +206,8 @@ namespace TomahawkUtils
 
     DLLEXPORT bool whitelistedHttpResultHint( const QString& url );
 
+    DLLEXPORT int compareVersionStrings( const QString& first, const QString& second );
+
     /**
      * This helper is designed to help "update" an existing playlist with a newer revision of itself.
      * To avoid re-loading the whole playlist and re-resolving tracks that are the same in the old playlist,