[OS/2] Bug 446159: query the plugin version resource on OS/2, r=mkaply

modules/plugin/base/src/nsPluginsDirOS2.cpp

@@ -81,6 +81,34 @@ static char *LoadRCDATAString( HMODULE hMod, ULONG resid)
    return string;
 }
 
+/* Load a version string stored as RCDATA in a resource segment */
+/* Returned string needs to be PR_Free'd by caller */
+static char *LoadRCDATAVersion(HMODULE hMod, ULONG resid)
+{
+   APIRET rc;
+   ULONG  ulSize = 0;
+   char  *string = 0;
+
+   rc = DosQueryResourceSize(hMod, RT_RCDATA, resid, &ulSize);
+
+   // version info is should be 8 chars
+   if (rc == NO_ERROR && ulSize == 8)
+   {
+      char *version = NULL;
+      rc = DosGetResource(hMod, RT_RCDATA, resid, (void**) &version);
+
+      if (rc == NO_ERROR)
+      {
+         string = PR_smprintf("%d.%d.%d.%d\n",
+                              version[0], version[2], version[4], version[6]);
+
+         DosFreeResource(version);
+      }
+   }
+
+   return string;
+}
+
 static PRUint32 CalculateVariantCount(char* mimeTypes)
 {
   PRUint32 variants = 1;
@@ -203,6 +231,8 @@ nsresult nsPluginFile::GetPluginInfo( nsPluginInfo &info)
 
       info.fName = LoadRCDATAString( hPlug, NS_INFO_ProductName);
 
+      info.fFileVersion = LoadRCDATAVersion( hPlug, NS_INFO_ProductVersion);
+
       // get description (doesn't matter if it's missing)...
       info.fDescription = LoadRCDATAString( hPlug, NS_INFO_FileDescription);