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      1 /*
      2  * Copyright (C) 2011 Google, Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef ContentSecurityPolicy_h
     27 #define ContentSecurityPolicy_h
     28 
     29 #include <wtf/Vector.h>
     30 #include <wtf/text/WTFString.h>
     31 
     32 namespace WebCore {
     33 
     34 class CSPDirective;
     35 class CSPOptions;
     36 class KURL;
     37 class SecurityOrigin;
     38 
     39 class ContentSecurityPolicy : public RefCounted<ContentSecurityPolicy> {
     40 public:
     41     static PassRefPtr<ContentSecurityPolicy> create(SecurityOrigin* origin = 0)
     42     {
     43         return adoptRef(new ContentSecurityPolicy(origin));
     44     }
     45     ~ContentSecurityPolicy();
     46 
     47     void didReceiveHeader(const String&);
     48 
     49     bool allowJavaScriptURLs() const;
     50     bool allowInlineEventHandlers() const;
     51     bool allowInlineScript() const;
     52     bool allowEval() const;
     53 
     54     bool allowScriptFromSource(const KURL&) const;
     55     bool allowObjectFromSource(const KURL&) const;
     56     bool allowImageFromSource(const KURL&) const;
     57     bool allowStyleFromSource(const KURL&) const;
     58     bool allowFontFromSource(const KURL&) const;
     59     bool allowMediaFromSource(const KURL&) const;
     60 
     61 private:
     62     explicit ContentSecurityPolicy(SecurityOrigin*);
     63 
     64     bool protectAgainstXSS() const;
     65 
     66     void parse(const String&);
     67     bool parseDirective(const UChar* begin, const UChar* end, String& name, String& value);
     68     void addDirective(const String& name, const String& value);
     69 
     70     bool m_havePolicy;
     71     RefPtr<SecurityOrigin> m_origin;
     72     OwnPtr<CSPDirective> m_scriptSrc;
     73     OwnPtr<CSPDirective> m_objectSrc;
     74     OwnPtr<CSPDirective> m_imgSrc;
     75     OwnPtr<CSPDirective> m_styleSrc;
     76     OwnPtr<CSPDirective> m_fontSrc;
     77     OwnPtr<CSPDirective> m_mediaSrc;
     78     OwnPtr<CSPOptions> m_options;
     79 };
     80 
     81 }
     82 
     83 #endif
     84