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Diffstat (limited to 'netwerk/protocol/about/nsAboutCache.h')
| -rw-r--r-- | netwerk/protocol/about/nsAboutCache.h | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/netwerk/protocol/about/nsAboutCache.h b/netwerk/protocol/about/nsAboutCache.h new file mode 100644 index 0000000000..2c7064d89e --- /dev/null +++ b/netwerk/protocol/about/nsAboutCache.h @@ -0,0 +1,193 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* 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 "nsIChannel.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); \ + } \ + NS_IMETHOD GetIsDocument(bool* aIsDocument) override { \ + return !_to ? NS_ERROR_NULL_POINTER : _to->GetIsDocument(aIsDocument); \ + } \ + NS_IMETHOD GetCanceled(bool* aCanceled) override { \ + return !_to ? NS_ERROR_NULL_POINTER : _to->GetCanceled(aCanceled); \ + }; + +class nsAboutCache final : public nsIAboutModule { + public: + NS_DECL_ISUPPORTS + NS_DECL_NSIABOUTMODULE + + nsAboutCache() = default; + + [[nodiscard]] static nsresult Create(nsISupports* aOuter, REFNSIID aIID, + void** aResult); + + [[nodiscard]] static nsresult GetStorage(nsACString const& storageName, + nsILoadContextInfo* loadInfo, + nsICacheStorage** storage); + + protected: + virtual ~nsAboutCache() = default; + + 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) override; + NS_IMETHOD Open(nsIInputStream** _retval) override; + + private: + virtual ~Channel() = default; + + public: + [[nodiscard]] nsresult Init(nsIURI* aURI, nsILoadInfo* aLoadInfo); + [[nodiscard]] 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. + [[nodiscard]] 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. + [[nodiscard]] 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. + [[nodiscard]] 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 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__ |