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