autodownload cabextract (required winetricks)

src/src/modules/app-folders.js

@@ -21,6 +21,7 @@ export default class AppFolders {
   squashfuseFile   = '/bin/squashfuse';
   dosboxFile       = '/bin/dosbox';
   fuseisoFile      = '/bin/fuseiso';
+  cabextractFile   = '/bin/cabextract';
   libsDir          = '/bin/libs/i386';
   libs64Dir        = '/bin/libs/x86-64';
   shareDir         = '/bin/share';
@@ -277,6 +278,10 @@ export default class AppFolders {
     return this.getRootDir() + this.fuseisoFile;
   }
 
+  getCabextractFile() {
+    return this.getRootDir() + this.cabextractFile;
+  }
+
   getResolutionsFile() {
     return this.getRootDir() + this.resolutionsFile;
   }

src/src/modules/kernels/wine.js

@@ -310,6 +310,7 @@ export default class Wine extends AbstractWine {
 
     return this.update.downloadWinetricks()
       .then(() => this.fs.exists(path) ? null : Promise.reject())
+      .then(() => this.update.downloadCabextract())
       .then(() => {
         api.commit(action.get('logs').CLEAR);
 

src/src/modules/update.js

@@ -8,7 +8,7 @@ const fs            = require('fs');
 
 export default class Update {
 
-  version = '1.5.19';
+  version = '1.5.20';
 
   /**
    * @type {string}
@@ -118,6 +118,20 @@ export default class Update {
     return Promise.resolve();
   }
 
+  /**
+   * @returns {Promise}
+   */
+  downloadCabextract() {
+    let url  = this.network.getRepo('/bin/cabextract');
+    let path = this.appFolder.getCabextractFile();
+
+    if (!this.fs.exists(path)) {
+      return this.network.download(url, path);
+    }
+
+    return Promise.resolve();
+  }
+
   /**
    * @return {string}
    */

src/src/modules/wine-command.js

@@ -163,6 +163,7 @@ export default class WineCommand extends Command {
 
     let exported = {
       VK_LAYER_PATH:                    `$VK_LAYER_PATH:${this.appFolders.getCacheImplicitLayerDir()}`,
+      PATH:                             `$PATH:${this.appFolders.getBinDir()}`,
       XDG_CACHE_HOME:                   this.appFolders.getCacheDir(),
       WINE:                             wine.getWineBin(),
       WINE64:                           wine.getWine64Bin(),