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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsAboutCache_h__
#define nsAboutCache_h__
#include "nsIAboutModule.h"
#include "nsICacheStorageVisitor.h"
#include "nsICacheStorage.h"
#include "nsString.h"
#include "nsIOutputStream.h"
#include "nsILoadContextInfo.h"
#include "nsCOMPtr.h"
#include "nsTArray.h"
#define NS_FORWARD_SAFE_NSICHANNEL_SUBSET(_to) \
NS_IMETHOD GetOriginalURI(nsIURI * *aOriginalURI) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetOriginalURI(aOriginalURI); } \
NS_IMETHOD SetOriginalURI(nsIURI *aOriginalURI) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetOriginalURI(aOriginalURI); } \
NS_IMETHOD GetURI(nsIURI * *aURI) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetURI(aURI); } \
NS_IMETHOD GetOwner(nsISupports * *aOwner) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetOwner(aOwner); } \
NS_IMETHOD SetOwner(nsISupports *aOwner) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetOwner(aOwner); } \
NS_IMETHOD GetNotificationCallbacks(nsIInterfaceRequestor * *aNotificationCallbacks) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetNotificationCallbacks(aNotificationCallbacks); } \
NS_IMETHOD SetNotificationCallbacks(nsIInterfaceRequestor *aNotificationCallbacks) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetNotificationCallbacks(aNotificationCallbacks); } \
NS_IMETHOD GetSecurityInfo(nsISupports * *aSecurityInfo) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetSecurityInfo(aSecurityInfo); } \
NS_IMETHOD GetContentType(nsACString & aContentType) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetContentType(aContentType); } \
NS_IMETHOD SetContentType(const nsACString & aContentType) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetContentType(aContentType); } \
NS_IMETHOD GetContentCharset(nsACString & aContentCharset) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetContentCharset(aContentCharset); } \
NS_IMETHOD SetContentCharset(const nsACString & aContentCharset) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetContentCharset(aContentCharset); } \
NS_IMETHOD GetContentLength(int64_t *aContentLength) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetContentLength(aContentLength); } \
NS_IMETHOD SetContentLength(int64_t aContentLength) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetContentLength(aContentLength); } \
NS_IMETHOD GetContentDisposition(uint32_t *aContentDisposition) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetContentDisposition(aContentDisposition); } \
NS_IMETHOD SetContentDisposition(uint32_t aContentDisposition) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetContentDisposition(aContentDisposition); } \
NS_IMETHOD GetContentDispositionFilename(nsAString & aContentDispositionFilename) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetContentDispositionFilename(aContentDispositionFilename); } \
NS_IMETHOD SetContentDispositionFilename(const nsAString & aContentDispositionFilename) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetContentDispositionFilename(aContentDispositionFilename); } \
NS_IMETHOD GetContentDispositionHeader(nsACString & aContentDispositionHeader) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetContentDispositionHeader(aContentDispositionHeader); } \
NS_IMETHOD GetLoadInfo(nsILoadInfo * *aLoadInfo) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetLoadInfo(aLoadInfo); } \
NS_IMETHOD SetLoadInfo(nsILoadInfo *aLoadInfo) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetLoadInfo(aLoadInfo); } \
class nsAboutCache final : public nsIAboutModule
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIABOUTMODULE
nsAboutCache() {}
static MOZ_MUST_USE nsresult
Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
static MOZ_MUST_USE nsresult
GetStorage(nsACString const & storageName, nsILoadContextInfo* loadInfo,
nsICacheStorage **storage);
protected:
virtual ~nsAboutCache() {}
class Channel final : public nsIChannel
, public nsICacheStorageVisitor
{
NS_DECL_ISUPPORTS
NS_DECL_NSICACHESTORAGEVISITOR
NS_FORWARD_SAFE_NSIREQUEST(mChannel)
NS_FORWARD_SAFE_NSICHANNEL_SUBSET(mChannel)
NS_IMETHOD AsyncOpen(nsIStreamListener *aListener, nsISupports *aContext) override;
NS_IMETHOD AsyncOpen2(nsIStreamListener *aListener) override;
NS_IMETHOD Open(nsIInputStream * *_retval) override;
NS_IMETHOD Open2(nsIInputStream * *_retval) override;
private:
virtual ~Channel() {}
public:
MOZ_MUST_USE nsresult Init(nsIURI* aURI, nsILoadInfo* aLoadInfo);
MOZ_MUST_USE nsresult ParseURI(nsIURI * uri, nsACString & storage);
// Finds a next storage we wish to visit (we use this method
// even there is a specified storage name, which is the only
// one in the list then.) Posts FireVisitStorage() when found.
MOZ_MUST_USE nsresult VisitNextStorage();
// Helper method that calls VisitStorage() for the current storage.
// When it fails, OnCacheEntryVisitCompleted is simulated to close
// the output stream and thus the about:cache channel.
void FireVisitStorage();
// Kiks the visit cycle for the given storage, names can be:
// "disk", "memory", "appcache"
// Note: any newly added storage type has to be manually handled here.
MOZ_MUST_USE nsresult VisitStorage(nsACString const & storageName);
// Writes content of mBuffer to mStream and truncates
// the buffer. It may fail when the input stream is closed by canceling
// the input stream channel. It can be used to stop the cache iteration
// process.
MOZ_MUST_USE nsresult FlushBuffer();
// Whether we are showing overview status of all available
// storages.
bool mOverview;
// Flag initially false, that indicates the entries header has
// been added to the output HTML.
bool mEntriesHeaderAdded;
// Cancelation flag
bool mCancel;
// The context we are working with.
nsCOMPtr<nsILoadContextInfo> mLoadInfo;
nsCString mContextString;
// The list of all storage names we want to visit
nsTArray<nsCString> mStorageList;
nsCString mStorageName;
nsCOMPtr<nsICacheStorage> mStorage;
// Output data buffering and streaming output
nsCString mBuffer;
nsCOMPtr<nsIOutputStream> mStream;
// The input stream channel, the one that actually does the job
nsCOMPtr<nsIChannel> mChannel;
};
};
#define NS_ABOUT_CACHE_MODULE_CID \
{ /* 9158c470-86e4-11d4-9be2-00e09872a416 */ \
0x9158c470, \
0x86e4, \
0x11d4, \
{0x9b, 0xe2, 0x00, 0xe0, 0x98, 0x72, 0xa4, 0x16} \
}
#endif // nsAboutCache_h__
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