diff options
Diffstat (limited to 'netwerk/protocol/about/nsAboutCache.cpp')
| -rw-r--r-- | netwerk/protocol/about/nsAboutCache.cpp | 533 |
1 files changed, 533 insertions, 0 deletions
diff --git a/netwerk/protocol/about/nsAboutCache.cpp b/netwerk/protocol/about/nsAboutCache.cpp new file mode 100644 index 0000000000..1873277a7a --- /dev/null +++ b/netwerk/protocol/about/nsAboutCache.cpp @@ -0,0 +1,533 @@ +/* -*- 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/. */ + +#include "nsAboutCache.h" +#include "nsIInputStream.h" +#include "nsIURI.h" +#include "nsCOMPtr.h" +#include "nsNetUtil.h" +#include "nsIPipe.h" +#include "nsContentUtils.h" +#include "nsEscape.h" +#include "nsAboutProtocolUtils.h" +#include "nsPrintfCString.h" + +#include "nsICacheStorageService.h" +#include "nsICacheStorage.h" +#include "CacheFileUtils.h" +#include "CacheObserver.h" + +#include "nsThreadUtils.h" + +using namespace mozilla::net; + +NS_IMPL_ISUPPORTS(nsAboutCache, nsIAboutModule) +NS_IMPL_ISUPPORTS(nsAboutCache::Channel, nsIChannel, nsIRequest, + nsICacheStorageVisitor) + +NS_IMETHODIMP +nsAboutCache::NewChannel(nsIURI* aURI, nsILoadInfo* aLoadInfo, + nsIChannel** result) { + nsresult rv; + + NS_ENSURE_ARG_POINTER(aURI); + + RefPtr<Channel> channel = new Channel(); + rv = channel->Init(aURI, aLoadInfo); + if (NS_FAILED(rv)) return rv; + + channel.forget(result); + + return NS_OK; +} + +nsresult nsAboutCache::Channel::Init(nsIURI* aURI, nsILoadInfo* aLoadInfo) { + nsresult rv; + + mCancel = false; + + nsCOMPtr<nsIInputStream> inputStream; + NS_NewPipe(getter_AddRefs(inputStream), getter_AddRefs(mStream), 16384, + (uint32_t)-1, + true, // non-blocking input + false // blocking output + ); + + nsAutoCString storageName; + rv = ParseURI(aURI, storageName); + if (NS_FAILED(rv)) return rv; + + mOverview = storageName.IsEmpty(); + if (mOverview) { + // ...and visit all we can + mStorageList.AppendElement("memory"_ns); + mStorageList.AppendElement("disk"_ns); + } else { + // ...and visit just the specified storage, entries will output too + mStorageList.AppendElement(storageName); + } + + // The entries header is added on encounter of the first entry + mEntriesHeaderAdded = false; + + rv = NS_NewInputStreamChannelInternal(getter_AddRefs(mChannel), aURI, + inputStream.forget(), "text/html"_ns, + "utf-8"_ns, aLoadInfo); + if (NS_FAILED(rv)) return rv; + + mBuffer.AssignLiteral( + "<!DOCTYPE html>\n" + "<html>\n" + "<head>\n" + " <title>Network Cache Storage Information</title>\n" + " <meta charset=\"utf-8\">\n" + " <meta name=\"color-scheme\" content=\"light dark\">\n" + " <meta http-equiv=\"Content-Security-Policy\" content=\"default-src " + "chrome:; object-src 'none'\"/>\n" + " <link rel=\"stylesheet\" " + "href=\"chrome://global/skin/in-content/info-pages.css\"/>\n" + " <link rel=\"stylesheet\" " + "href=\"chrome://global/skin/aboutCache.css\"/>\n" + "</head>\n" + "<body class=\"aboutPageWideContainer\">\n" + "<h1>Information about the Network Cache Storage Service</h1>\n"); + + if (!mOverview) { + mBuffer.AppendLiteral( + "<a href=\"about:cache?storage=\">Back to overview</a>"); + } + + rv = FlushBuffer(); + if (NS_FAILED(rv)) { + NS_WARNING("Failed to flush buffer"); + } + + return NS_OK; +} + +NS_IMETHODIMP nsAboutCache::Channel::AsyncOpen(nsIStreamListener* aListener) { + nsresult rv; + + if (!mChannel) { + return NS_ERROR_UNEXPECTED; + } + + // Kick the walk loop. + rv = VisitNextStorage(); + if (NS_FAILED(rv)) return rv; + + rv = mChannel->AsyncOpen(aListener); + if (NS_FAILED(rv)) return rv; + + return NS_OK; +} + +NS_IMETHODIMP nsAboutCache::Channel::Open(nsIInputStream** _retval) { + return NS_ERROR_NOT_IMPLEMENTED; +} + +nsresult nsAboutCache::Channel::ParseURI(nsIURI* uri, nsACString& storage) { + // + // about:cache[?storage=<storage-name>[&context=<context-key>]] + // + nsresult rv; + + nsAutoCString path; + rv = uri->GetPathQueryRef(path); + if (NS_FAILED(rv)) return rv; + + storage.Truncate(); + + nsACString::const_iterator start, valueStart, end; + path.BeginReading(start); + path.EndReading(end); + + valueStart = end; + if (!FindInReadable("?storage="_ns, start, valueStart)) { + return NS_OK; + } + + storage.Assign(Substring(valueStart, end)); + + return NS_OK; +} + +nsresult nsAboutCache::Channel::VisitNextStorage() { + if (!mStorageList.Length()) return NS_ERROR_NOT_AVAILABLE; + + mStorageName = mStorageList[0]; + mStorageList.RemoveElementAt(0); + + // Must re-dispatch since we cannot start another visit cycle + // from visitor callback. The cache v1 service doesn't like it. + // TODO - mayhemer, bug 913828, remove this dispatch and call + // directly. + return NS_DispatchToMainThread(mozilla::NewRunnableMethod( + "nsAboutCache::Channel::FireVisitStorage", this, + &nsAboutCache::Channel::FireVisitStorage)); +} + +void nsAboutCache::Channel::FireVisitStorage() { + nsresult rv; + + rv = VisitStorage(mStorageName); + if (NS_FAILED(rv)) { + nsAutoCString escaped; + nsAppendEscapedHTML(mStorageName, escaped); + mBuffer.Append(nsPrintfCString( + "<p>Unrecognized storage name '%s' in about:cache URL</p>", + escaped.get())); + + rv = FlushBuffer(); + if (NS_FAILED(rv)) { + NS_WARNING("Failed to flush buffer"); + } + + // Simulate finish of a visit cycle, this tries the next storage + // or closes the output stream (i.e. the UI loader will stop spinning) + OnCacheEntryVisitCompleted(); + } +} + +nsresult nsAboutCache::Channel::VisitStorage(nsACString const& storageName) { + nsresult rv; + + rv = GetStorage(storageName, nullptr, getter_AddRefs(mStorage)); + if (NS_FAILED(rv)) return rv; + + rv = mStorage->AsyncVisitStorage(this, !mOverview); + if (NS_FAILED(rv)) return rv; + + return NS_OK; +} + +// static +nsresult nsAboutCache::GetStorage(nsACString const& storageName, + nsILoadContextInfo* loadInfo, + nsICacheStorage** storage) { + nsresult rv; + + nsCOMPtr<nsICacheStorageService> cacheService = + do_GetService("@mozilla.org/netwerk/cache-storage-service;1", &rv); + if (NS_FAILED(rv)) return rv; + + nsCOMPtr<nsICacheStorage> cacheStorage; + if (storageName == "disk") { + rv = cacheService->DiskCacheStorage(loadInfo, getter_AddRefs(cacheStorage)); + } else if (storageName == "memory") { + rv = cacheService->MemoryCacheStorage(loadInfo, + getter_AddRefs(cacheStorage)); + } else { + rv = NS_ERROR_UNEXPECTED; + } + if (NS_FAILED(rv)) return rv; + + cacheStorage.forget(storage); + return NS_OK; +} + +NS_IMETHODIMP +nsAboutCache::Channel::OnCacheStorageInfo(uint32_t aEntryCount, + uint64_t aConsumption, + uint64_t aCapacity, + nsIFile* aDirectory) { + // We need mStream for this + if (!mStream) { + return NS_ERROR_FAILURE; + } + + mBuffer.AssignLiteral("<h2>"); + nsAppendEscapedHTML(mStorageName, mBuffer); + mBuffer.AppendLiteral( + "</h2>\n" + "<table id=\""); + mBuffer.AppendLiteral("\">\n"); + + // Write out cache info + // Number of entries + mBuffer.AppendLiteral( + " <tr>\n" + " <th>Number of entries:</th>\n" + " <td>"); + mBuffer.AppendInt(aEntryCount); + mBuffer.AppendLiteral( + "</td>\n" + " </tr>\n"); + + // Maximum storage size + mBuffer.AppendLiteral( + " <tr>\n" + " <th>Maximum storage size:</th>\n" + " <td>"); + mBuffer.AppendInt(aCapacity / 1024); + mBuffer.AppendLiteral( + " KiB</td>\n" + " </tr>\n"); + + // Storage in use + mBuffer.AppendLiteral( + " <tr>\n" + " <th>Storage in use:</th>\n" + " <td>"); + mBuffer.AppendInt(aConsumption / 1024); + mBuffer.AppendLiteral( + " KiB</td>\n" + " </tr>\n"); + + // Storage disk location + mBuffer.AppendLiteral( + " <tr>\n" + " <th>Storage disk location:</th>\n" + " <td>"); + if (aDirectory) { + nsAutoString path; + aDirectory->GetPath(path); + mBuffer.Append(NS_ConvertUTF16toUTF8(path)); + } else { + mBuffer.AppendLiteral("none, only stored in memory"); + } + mBuffer.AppendLiteral( + " </td>\n" + " </tr>\n"); + + if (mOverview) { // The about:cache case + if (aEntryCount != 0) { // Add the "List Cache Entries" link + mBuffer.AppendLiteral( + " <tr>\n" + " <td colspan=\"2\"><a href=\"about:cache?storage="); + nsAppendEscapedHTML(mStorageName, mBuffer); + mBuffer.AppendLiteral( + "\">List Cache Entries</a></td>\n" + " </tr>\n"); + } + } + + mBuffer.AppendLiteral("</table>\n"); + + // The entries header is added on encounter of the first entry + mEntriesHeaderAdded = false; + + nsresult rv = FlushBuffer(); + if (NS_FAILED(rv)) { + NS_WARNING("Failed to flush buffer"); + } + + if (mOverview) { + // OnCacheEntryVisitCompleted() is not called when we do not iterate + // cache entries. Since this moves forward to the next storage in + // the list we want to visit, artificially call it here. + OnCacheEntryVisitCompleted(); + } + + return NS_OK; +} + +NS_IMETHODIMP +nsAboutCache::Channel::OnCacheEntryInfo( + nsIURI* aURI, const nsACString& aIdEnhance, int64_t aDataSize, + int64_t aAltDataSize, uint32_t aFetchCount, uint32_t aLastModified, + uint32_t aExpirationTime, bool aPinned, nsILoadContextInfo* aInfo) { + // We need mStream for this + if (!mStream || mCancel) { + // Returning a failure from this callback stops the iteration + return NS_ERROR_FAILURE; + } + + if (!mEntriesHeaderAdded) { + mBuffer.AppendLiteral( + "<hr/>\n" + "<table id=\"entries\">\n" + " <colgroup>\n" + " <col id=\"col-key\">\n" + " <col id=\"col-dataSize\">\n" + " <col id=\"col-altDataSize\">\n" + " <col id=\"col-fetchCount\">\n" + " <col id=\"col-lastModified\">\n" + " <col id=\"col-expires\">\n" + " <col id=\"col-pinned\">\n" + " </colgroup>\n" + " <thead>\n" + " <tr>\n" + " <th>Key</th>\n" + " <th>Data size</th>\n" + " <th>Alternative Data size</th>\n" + " <th>Fetch count</th>\n" + " <th>Last Modifed</th>\n" + " <th>Expires</th>\n" + " <th>Pinning</th>\n" + " </tr>\n" + " </thead>\n"); + mEntriesHeaderAdded = true; + } + + // Generate a about:cache-entry URL for this entry... + + nsAutoCString url; + url.AssignLiteral("about:cache-entry?storage="); + nsAppendEscapedHTML(mStorageName, url); + + nsAutoCString context; + CacheFileUtils::AppendKeyPrefix(aInfo, context); + url.AppendLiteral("&context="); + nsAppendEscapedHTML(context, url); + + url.AppendLiteral("&eid="); + nsAppendEscapedHTML(aIdEnhance, url); + + nsAutoCString cacheUriSpec; + aURI->GetAsciiSpec(cacheUriSpec); + nsAutoCString escapedCacheURI; + nsAppendEscapedHTML(cacheUriSpec, escapedCacheURI); + url.AppendLiteral("&uri="); + url += escapedCacheURI; + + // Entry start... + mBuffer.AppendLiteral(" <tr>\n"); + + // URI + mBuffer.AppendLiteral(" <td><a href=\""); + mBuffer.Append(url); + mBuffer.AppendLiteral("\">"); + if (!aIdEnhance.IsEmpty()) { + nsAppendEscapedHTML(aIdEnhance, mBuffer); + mBuffer.Append(':'); + } + mBuffer.Append(escapedCacheURI); + mBuffer.AppendLiteral("</a>"); + + if (!context.IsEmpty()) { + mBuffer.AppendLiteral("<br><span title=\"Context separation key\">"); + nsAutoCString escapedContext; + nsAppendEscapedHTML(context, escapedContext); + mBuffer.Append(escapedContext); + mBuffer.AppendLiteral("</span>"); + } + + mBuffer.AppendLiteral("</td>\n"); + + // Content length + mBuffer.AppendLiteral(" <td>"); + mBuffer.AppendInt(aDataSize); + mBuffer.AppendLiteral(" bytes</td>\n"); + + // Length of alternative content + mBuffer.AppendLiteral(" <td>"); + mBuffer.AppendInt(aAltDataSize); + mBuffer.AppendLiteral(" bytes</td>\n"); + + // Number of accesses + mBuffer.AppendLiteral(" <td>"); + mBuffer.AppendInt(aFetchCount); + mBuffer.AppendLiteral("</td>\n"); + + // vars for reporting time + char buf[255]; + + // Last modified time + mBuffer.AppendLiteral(" <td>"); + if (aLastModified) { + PrintTimeString(buf, sizeof(buf), aLastModified); + mBuffer.Append(buf); + } else { + mBuffer.AppendLiteral("No last modified time"); + } + mBuffer.AppendLiteral("</td>\n"); + + // Expires time + mBuffer.AppendLiteral(" <td>"); + + // Bug - 633747. + // When expiration time is 0, we show 1970-01-01 01:00:00 which is confusing. + // So we check if time is 0, then we show a message, "Expired Immediately" + if (aExpirationTime == 0) { + mBuffer.AppendLiteral("Expired Immediately"); + } else if (aExpirationTime < 0xFFFFFFFF) { + PrintTimeString(buf, sizeof(buf), aExpirationTime); + mBuffer.Append(buf); + } else { + mBuffer.AppendLiteral("No expiration time"); + } + mBuffer.AppendLiteral("</td>\n"); + + // Pinning + mBuffer.AppendLiteral(" <td>"); + if (aPinned) { + mBuffer.AppendLiteral("Pinned"); + } else { + mBuffer.AppendLiteral(" "); + } + mBuffer.AppendLiteral("</td>\n"); + + // Entry is done... + mBuffer.AppendLiteral(" </tr>\n"); + + return FlushBuffer(); +} + +NS_IMETHODIMP +nsAboutCache::Channel::OnCacheEntryVisitCompleted() { + if (!mStream) { + return NS_ERROR_FAILURE; + } + + if (mEntriesHeaderAdded) { + mBuffer.AppendLiteral("</table>\n"); + } + + // Kick another storage visiting (from a storage that allows us.) + while (mStorageList.Length()) { + nsresult rv = VisitNextStorage(); + if (NS_SUCCEEDED(rv)) { + // Expecting new round of OnCache* calls. + return NS_OK; + } + } + + // We are done! + mBuffer.AppendLiteral( + "</body>\n" + "</html>\n"); + nsresult rv = FlushBuffer(); + if (NS_FAILED(rv)) { + NS_WARNING("Failed to flush buffer"); + } + mStream->Close(); + + return NS_OK; +} + +nsresult nsAboutCache::Channel::FlushBuffer() { + nsresult rv; + + uint32_t bytesWritten; + rv = mStream->Write(mBuffer.get(), mBuffer.Length(), &bytesWritten); + mBuffer.Truncate(); + + if (NS_FAILED(rv)) { + mCancel = true; + } + + return rv; +} + +NS_IMETHODIMP +nsAboutCache::GetURIFlags(nsIURI* aURI, uint32_t* result) { + *result = nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT | + nsIAboutModule::IS_SECURE_CHROME_UI; + return NS_OK; +} + +// static +nsresult nsAboutCache::Create(REFNSIID aIID, void** aResult) { + RefPtr<nsAboutCache> about = new nsAboutCache(); + return about->QueryInterface(aIID, aResult); +} + +NS_IMETHODIMP +nsAboutCache::GetChromeURI(nsIURI* aURI, nsIURI** chromeURI) { + return NS_ERROR_ILLEGAL_VALUE; +} + +//////////////////////////////////////////////////////////////////////////////// |