[Webkit-unassigned] [Bug 36815] New: Plug-ins having upper case in mime type are failing to load

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=36815

           Summary: Plug-ins having upper case in mime type are failing to
                    load
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: Major
          Priority: P2
         Component: New Bugs
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: maharana.pankaj at gmail.com
                CC: maharana.pankaj at gmail.com


WebKit can not load Mozilla Plug-ins having uppercase in their mime type
description string. For example a HelloWorld plug-in with mime type as
"application/sample-helloworld" is loaded successfully but when the mime type
string becomes "application/Sample-HelloWorld" it fails to load. Where as
Mozilla Firefox browser loads it properly.

With a little debugging I found that WebKit converts the mime type strings to
lower case explicitly, before searching for the plug-ins in plug-in
directories. Is there any special reason behind that? If not, I think, they
should not be converted to lower case.

The files and functions where they are converted to lower case are as below
1. In the file "WebCore/html/HTMLObjectElement.cpp", in the function 
   "void HTMLObjectElement::parseMappedAttribute(MappedAttribute *attr)"
   the line "m_serviceType = val.lower();"
2. In the file "WebCore/plugins/PluginDatabase.cpp", in the function 
   "PluginPackage* PluginDatabase::pluginForMIMEType(const String& mimeType)"
   the line "String key = mimeType.lower();"
3. In the file "WebCore/plugins/PluginDatabase.cpp", in the function 
   "void PluginDatabase::setPreferredPluginForMIMEType(const String& mimeType,
PluginPackage* plugin)"
   the line "m_preferredPlugins.set(mimeType.lower(), plugin);"

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