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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_MHTML_MHTML_ARCHIVE_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_MHTML_MHTML_ARCHIVE_H_
#include "base/time/time.h"
#include "third_party/blink/public/mojom/loader/mhtml_load_result.mojom-blink-forward.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_hash_map.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/weborigin/kurl.h"
#include "third_party/blink/renderer/platform/wtf/text/string_hash.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"
namespace blink {
// When URIs use the "cid" (Content-ID) scheme, the resource refers to a
// specific body part in an MHTML multipart/related structure.
// See RFC n°2557, section-8.3: "Use of the Content-ID header and CID URLs".
const char kContentIdScheme[] = "cid";
class ArchiveResource;
class KURL;
struct SerializedResource;
class PLATFORM_EXPORT MHTMLArchive final
: public GarbageCollected<MHTMLArchive> {
public:
static MHTMLArchive* Create(const KURL&, scoped_refptr<const SharedBuffer>);
MHTMLArchive();
// Binary encoding results in smaller MHTML files but they might not work in
// other browsers.
enum EncodingPolicy { kUseDefaultEncoding, kUseBinaryEncoding };
// Generates an MHTML header and appends it to |outputBuffer|.
//
// Same |boundary| needs to be used for all generateMHTMLHeader and
// generateMHTMLPart and generateMHTMLFooter calls that belong to the same
// MHTML document (see also rfc1341, section 7.2.1, "boundary" description).
static void GenerateMHTMLHeader(const String& boundary,
const KURL&,
const String& title,
const String& mime_type,
base::Time date,
Vector<char>& output_buffer);
// Serializes SerializedResource as an MHTML part and appends it in
// |outputBuffer|.
//
// Same |boundary| needs to be used for all generateMHTMLHeader and
// generateMHTMLPart and generateMHTMLFooter calls that belong to the same
// MHTML document (see also rfc1341, section 7.2.1, "boundary" description).
//
// If |contentID| is non-empty, then it will be used as a Content-ID header.
// See rfc2557 - section 8.3 - "Use of the Content-ID header and CID URLs".
static void GenerateMHTMLPart(const String& boundary,
const String& content_id,
EncodingPolicy,
const SerializedResource&,
Vector<char>& output_buffer);
// Generates an MHTML footer and appends it to |outputBuffer| for testing
// purposes.
//
// Same |boundary| needs to be used for all generateMHTMLHeader and
// generateMHTMLPart and generateMHTMLFooter calls that belong to the same
// MHTML document (see also rfc1341, section 7.2.1, "boundary" description).
static void GenerateMHTMLFooterForTesting(const String& boundary,
Vector<char>& output_buffer);
typedef HeapHashMap<String, Member<ArchiveResource>> SubArchiveResources;
ArchiveResource* MainResource() const { return main_resource_.Get(); }
ArchiveResource* SubresourceForURL(const KURL&) const;
String GetCacheIdentifier() const;
// The purported creation date (as expressed by the Date: header).
base::Time Date() const { return date_; }
void Trace(Visitor*) const;
blink::mojom::MHTMLLoadResult LoadResult() const { return load_result_; }
private:
static MHTMLArchive* CreateArchive(const KURL&,
scoped_refptr<const SharedBuffer>);
static void ReportLoadResult(blink::mojom::MHTMLLoadResult result);
void SetMainResource(ArchiveResource*);
void AddSubresource(ArchiveResource*);
static bool CanLoadArchive(const KURL&);
// URL of the MHTML resource (e.g. file:///foo/bar.mhtml).
KURL archive_url_;
base::Time date_;
Member<ArchiveResource> main_resource_;
SubArchiveResources subresources_;
blink::mojom::MHTMLLoadResult load_result_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_MHTML_MHTML_ARCHIVE_H_
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