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      1 /*
      2  * Copyright (C) 2010 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 are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #include "platform/blob/BlobURL.h"
     33 
     34 #include "platform/UUID.h"
     35 #include "platform/weborigin/KURL.h"
     36 #include "platform/weborigin/SecurityOrigin.h"
     37 #include "wtf/text/WTFString.h"
     38 
     39 namespace WebCore {
     40 
     41 const char BlobURL::kBlobProtocol[] = "blob";
     42 
     43 KURL BlobURL::createPublicURL(SecurityOrigin* securityOrigin)
     44 {
     45     ASSERT(securityOrigin);
     46     return createBlobURL(securityOrigin->toString());
     47 }
     48 
     49 String BlobURL::getOrigin(const KURL& url)
     50 {
     51     ASSERT(url.protocolIs(kBlobProtocol));
     52 
     53     unsigned startIndex = url.pathStart();
     54     unsigned endIndex = url.pathAfterLastSlash();
     55     return url.string().substring(startIndex, endIndex - startIndex - 1);
     56 }
     57 
     58 KURL BlobURL::createInternalStreamURL()
     59 {
     60     return createBlobURL("blobinternal://");
     61 }
     62 
     63 KURL BlobURL::createBlobURL(const String& originString)
     64 {
     65     ASSERT(!originString.isEmpty());
     66     String urlString = "blob:" + encodeWithURLEscapeSequences(originString) + '/' + createCanonicalUUIDString();
     67     return KURL::createIsolated(ParsedURLString, urlString);
     68 }
     69 
     70 } // namespace WebCore
     71