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-rw-r--r--netwerk/protocol/data/DataChannelChild.cpp58
-rw-r--r--netwerk/protocol/data/DataChannelChild.h40
-rw-r--r--netwerk/protocol/data/DataChannelParent.cpp105
-rw-r--r--netwerk/protocol/data/DataChannelParent.h39
-rw-r--r--netwerk/protocol/data/moz.build29
-rw-r--r--netwerk/protocol/data/nsDataChannel.cpp109
-rw-r--r--netwerk/protocol/data/nsDataChannel.h24
-rw-r--r--netwerk/protocol/data/nsDataHandler.cpp247
-rw-r--r--netwerk/protocol/data/nsDataHandler.h56
-rw-r--r--netwerk/protocol/data/nsDataModule.cpp15
10 files changed, 722 insertions, 0 deletions
diff --git a/netwerk/protocol/data/DataChannelChild.cpp b/netwerk/protocol/data/DataChannelChild.cpp
new file mode 100644
index 0000000000..3ce6f02dd5
--- /dev/null
+++ b/netwerk/protocol/data/DataChannelChild.cpp
@@ -0,0 +1,58 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=4 sw=2 sts=2 et tw=80: */
+/* 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 "DataChannelChild.h"
+
+#include "mozilla/Unused.h"
+#include "mozilla/dom/ContentChild.h"
+#include "mozilla/net/NeckoChild.h"
+
+namespace mozilla {
+namespace net {
+
+NS_IMPL_ISUPPORTS_INHERITED(DataChannelChild, nsDataChannel, nsIChildChannel)
+
+DataChannelChild::DataChannelChild(nsIURI* aURI)
+ : nsDataChannel(aURI), mIPCOpen(false) {}
+
+NS_IMETHODIMP
+DataChannelChild::ConnectParent(uint32_t aId) {
+ mozilla::dom::ContentChild* cc =
+ static_cast<mozilla::dom::ContentChild*>(gNeckoChild->Manager());
+ if (cc->IsShuttingDown()) {
+ return NS_ERROR_FAILURE;
+ }
+
+ if (!gNeckoChild->SendPDataChannelConstructor(this, aId)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ // IPC now has a ref to us.
+ mIPCOpen = true;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+DataChannelChild::CompleteRedirectSetup(nsIStreamListener* aListener) {
+ nsresult rv;
+ rv = AsyncOpen(aListener);
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ return rv;
+ }
+
+ if (mIPCOpen) {
+ Unused << Send__delete__(this);
+ }
+ return NS_OK;
+}
+
+void DataChannelChild::ActorDestroy(ActorDestroyReason why) {
+ MOZ_ASSERT(mIPCOpen);
+ mIPCOpen = false;
+}
+
+} // namespace net
+} // namespace mozilla
diff --git a/netwerk/protocol/data/DataChannelChild.h b/netwerk/protocol/data/DataChannelChild.h
new file mode 100644
index 0000000000..8e9f91ea60
--- /dev/null
+++ b/netwerk/protocol/data/DataChannelChild.h
@@ -0,0 +1,40 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=4 sw=2 sts=2 et tw=80: */
+/* 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 NS_DATACHANNELCHILD_H
+#define NS_DATACHANNELCHILD_H
+
+#include "nsDataChannel.h"
+#include "nsIChildChannel.h"
+#include "nsISupportsImpl.h"
+
+#include "mozilla/net/PDataChannelChild.h"
+
+namespace mozilla {
+namespace net {
+
+class DataChannelChild : public nsDataChannel,
+ public nsIChildChannel,
+ public PDataChannelChild {
+ public:
+ explicit DataChannelChild(nsIURI* uri);
+
+ NS_DECL_ISUPPORTS_INHERITED
+ NS_DECL_NSICHILDCHANNEL
+
+ protected:
+ virtual void ActorDestroy(ActorDestroyReason why) override;
+
+ private:
+ ~DataChannelChild() = default;
+
+ bool mIPCOpen;
+};
+
+} // namespace net
+} // namespace mozilla
+
+#endif /* NS_DATACHANNELCHILD_H */
diff --git a/netwerk/protocol/data/DataChannelParent.cpp b/netwerk/protocol/data/DataChannelParent.cpp
new file mode 100644
index 0000000000..e427120a55
--- /dev/null
+++ b/netwerk/protocol/data/DataChannelParent.cpp
@@ -0,0 +1,105 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=4 sw=2 sts=2 et tw=80: */
+/* 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 "DataChannelParent.h"
+#include "mozilla/Assertions.h"
+#include "mozilla/dom/ContentParent.h"
+#include "mozilla/net/NeckoParent.h"
+#include "nsNetUtil.h"
+#include "nsIChannel.h"
+
+#ifdef FUZZING_SNAPSHOT
+# define MOZ_ALWAYS_SUCCEEDS_FUZZING(...) (void)__VA_ARGS__
+#else
+# define MOZ_ALWAYS_SUCCEEDS_FUZZING(...) MOZ_ALWAYS_SUCCEEDS(__VA_ARGS__)
+#endif
+
+namespace mozilla {
+namespace net {
+
+NS_IMPL_ISUPPORTS(DataChannelParent, nsIParentChannel, nsIStreamListener)
+
+bool DataChannelParent::Init(const uint64_t& aChannelId) {
+ nsCOMPtr<nsIChannel> channel;
+
+ MOZ_ALWAYS_SUCCEEDS_FUZZING(
+ NS_LinkRedirectChannels(aChannelId, this, getter_AddRefs(channel)));
+
+ return true;
+}
+
+NS_IMETHODIMP
+DataChannelParent::SetParentListener(ParentChannelListener* aListener) {
+ // Nothing to do.
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+DataChannelParent::NotifyClassificationFlags(uint32_t aClassificationFlags,
+ bool aIsThirdParty) {
+ // Nothing to do.
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+DataChannelParent::SetClassifierMatchedInfo(const nsACString& aList,
+ const nsACString& aProvider,
+ const nsACString& aFullHash) {
+ // nothing to do
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+DataChannelParent::SetClassifierMatchedTrackingInfo(
+ const nsACString& aLists, const nsACString& aFullHashes) {
+ // nothing to do
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+DataChannelParent::Delete() {
+ // Nothing to do.
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+DataChannelParent::GetRemoteType(nsACString& aRemoteType) {
+ if (!CanSend()) {
+ return NS_ERROR_UNEXPECTED;
+ }
+
+ dom::PContentParent* pcp = Manager()->Manager();
+ aRemoteType = static_cast<dom::ContentParent*>(pcp)->GetRemoteType();
+ return NS_OK;
+}
+
+void DataChannelParent::ActorDestroy(ActorDestroyReason why) {}
+
+NS_IMETHODIMP
+DataChannelParent::OnStartRequest(nsIRequest* aRequest) {
+ // We don't have a way to prevent nsBaseChannel from calling AsyncOpen on
+ // the created nsDataChannel. We don't have anywhere to send the data in the
+ // parent, so abort the binding.
+ return NS_BINDING_ABORTED;
+}
+
+NS_IMETHODIMP
+DataChannelParent::OnStopRequest(nsIRequest* aRequest, nsresult aStatusCode) {
+ // See above.
+ MOZ_ASSERT(NS_FAILED(aStatusCode));
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+DataChannelParent::OnDataAvailable(nsIRequest* aRequest,
+ nsIInputStream* aInputStream,
+ uint64_t aOffset, uint32_t aCount) {
+ // See above.
+ MOZ_CRASH("Should never be called");
+}
+
+} // namespace net
+} // namespace mozilla
diff --git a/netwerk/protocol/data/DataChannelParent.h b/netwerk/protocol/data/DataChannelParent.h
new file mode 100644
index 0000000000..122cdda182
--- /dev/null
+++ b/netwerk/protocol/data/DataChannelParent.h
@@ -0,0 +1,39 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=4 sw=2 sts=2 et tw=80: */
+/* 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 NS_DATACHANNELPARENT_H
+#define NS_DATACHANNELPARENT_H
+
+#include "nsIParentChannel.h"
+#include "nsISupportsImpl.h"
+
+#include "mozilla/net/PDataChannelParent.h"
+
+namespace mozilla {
+namespace net {
+
+// In order to support HTTP redirects to data:, we need to implement the HTTP
+// redirection API, which requires a class that implements nsIParentChannel
+// and which calls NS_LinkRedirectChannels.
+class DataChannelParent : public nsIParentChannel, public PDataChannelParent {
+ public:
+ NS_DECL_ISUPPORTS
+ NS_DECL_NSIPARENTCHANNEL
+ NS_DECL_NSIREQUESTOBSERVER
+ NS_DECL_NSISTREAMLISTENER
+
+ [[nodiscard]] bool Init(const uint64_t& aChannelId);
+
+ private:
+ ~DataChannelParent() = default;
+
+ virtual void ActorDestroy(ActorDestroyReason why) override;
+};
+
+} // namespace net
+} // namespace mozilla
+
+#endif /* NS_DATACHANNELPARENT_H */
diff --git a/netwerk/protocol/data/moz.build b/netwerk/protocol/data/moz.build
new file mode 100644
index 0000000000..482c0b8a2f
--- /dev/null
+++ b/netwerk/protocol/data/moz.build
@@ -0,0 +1,29 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# 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/.
+
+EXPORTS.mozilla.net += [
+ "DataChannelChild.h",
+ "DataChannelParent.h",
+]
+
+EXPORTS += [
+ "nsDataChannel.h",
+ "nsDataHandler.h",
+]
+
+UNIFIED_SOURCES += [
+ "DataChannelChild.cpp",
+ "DataChannelParent.cpp",
+ "nsDataChannel.cpp",
+ "nsDataHandler.cpp",
+]
+
+include("/ipc/chromium/chromium-config.mozbuild")
+
+FINAL_LIBRARY = "xul"
+LOCAL_INCLUDES += [
+ "/netwerk/base",
+]
diff --git a/netwerk/protocol/data/nsDataChannel.cpp b/netwerk/protocol/data/nsDataChannel.cpp
new file mode 100644
index 0000000000..2b96cb0853
--- /dev/null
+++ b/netwerk/protocol/data/nsDataChannel.cpp
@@ -0,0 +1,109 @@
+/* -*- 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/. */
+
+// data implementation
+
+#include "nsDataChannel.h"
+
+#include "mozilla/Base64.h"
+#include "nsDataHandler.h"
+#include "nsIInputStream.h"
+#include "nsEscape.h"
+#include "nsStringStream.h"
+
+using namespace mozilla;
+
+/**
+ * Helper for performing a fallible unescape.
+ *
+ * @param aStr The string to unescape.
+ * @param aBuffer Buffer to unescape into if necessary.
+ * @param rv Out: nsresult indicating success or failure of unescaping.
+ * @return Reference to the string containing the unescaped data.
+ */
+const nsACString& Unescape(const nsACString& aStr, nsACString& aBuffer,
+ nsresult* rv) {
+ MOZ_ASSERT(rv);
+
+ bool appended = false;
+ *rv = NS_UnescapeURL(aStr.Data(), aStr.Length(), /* aFlags = */ 0, aBuffer,
+ appended, mozilla::fallible);
+ if (NS_FAILED(*rv) || !appended) {
+ return aStr;
+ }
+
+ return aBuffer;
+}
+
+nsresult nsDataChannel::OpenContentStream(bool async, nsIInputStream** result,
+ nsIChannel** channel) {
+ NS_ENSURE_TRUE(URI(), NS_ERROR_NOT_INITIALIZED);
+
+ nsresult rv;
+
+ // In order to avoid potentially building up a new path including the
+ // ref portion of the URI, which we don't care about, we clone a version
+ // of the URI that does not have a ref and in most cases should share
+ // string buffers with the original URI.
+ nsCOMPtr<nsIURI> uri;
+ rv = NS_GetURIWithoutRef(URI(), getter_AddRefs(uri));
+ if (NS_FAILED(rv)) return rv;
+
+ nsAutoCString path;
+ rv = uri->GetPathQueryRef(path);
+ if (NS_FAILED(rv)) return rv;
+
+ nsCString contentType, contentCharset;
+ nsDependentCSubstring dataRange;
+ bool lBase64;
+ rv = nsDataHandler::ParsePathWithoutRef(path, contentType, &contentCharset,
+ lBase64, &dataRange);
+ if (NS_FAILED(rv)) return rv;
+
+ // This will avoid a copy if nothing needs to be unescaped.
+ nsAutoCString unescapedBuffer;
+ const nsACString& data = Unescape(dataRange, unescapedBuffer, &rv);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ if (lBase64 && &data == &unescapedBuffer) {
+ // Don't allow spaces in base64-encoded content. This is only
+ // relevant for escaped spaces; other spaces are stripped in
+ // NewURI. We know there were no escaped spaces if the data buffer
+ // wasn't used in |Unescape|.
+ unescapedBuffer.StripWhitespace();
+ }
+
+ nsCOMPtr<nsIInputStream> bufInStream;
+ uint32_t contentLen;
+ if (lBase64) {
+ nsAutoCString decodedData;
+ rv = Base64Decode(data, decodedData);
+ if (NS_FAILED(rv)) {
+ // Returning this error code instead of what Base64Decode returns
+ // (NS_ERROR_ILLEGAL_VALUE) will prevent rendering of redirect response
+ // content by HTTP channels. It's also more logical error to return.
+ // Here we know the URL is actually corrupted.
+ return NS_ERROR_MALFORMED_URI;
+ }
+
+ contentLen = decodedData.Length();
+ rv = NS_NewCStringInputStream(getter_AddRefs(bufInStream), decodedData);
+ } else {
+ contentLen = data.Length();
+ rv = NS_NewCStringInputStream(getter_AddRefs(bufInStream), data);
+ }
+
+ if (NS_FAILED(rv)) return rv;
+
+ SetContentType(contentType);
+ SetContentCharset(contentCharset);
+ mContentLength = contentLen;
+
+ bufInStream.forget(result);
+
+ return NS_OK;
+}
diff --git a/netwerk/protocol/data/nsDataChannel.h b/netwerk/protocol/data/nsDataChannel.h
new file mode 100644
index 0000000000..8ee759f1db
--- /dev/null
+++ b/netwerk/protocol/data/nsDataChannel.h
@@ -0,0 +1,24 @@
+/* -*- 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/. */
+
+// data implementation header
+
+#ifndef nsDataChannel_h___
+#define nsDataChannel_h___
+
+#include "nsBaseChannel.h"
+
+class nsIInputStream;
+
+class nsDataChannel : public nsBaseChannel {
+ public:
+ explicit nsDataChannel(nsIURI* uri) { SetURI(uri); }
+
+ protected:
+ [[nodiscard]] virtual nsresult OpenContentStream(
+ bool async, nsIInputStream** result, nsIChannel** channel) override;
+};
+
+#endif /* nsDataChannel_h___ */
diff --git a/netwerk/protocol/data/nsDataHandler.cpp b/netwerk/protocol/data/nsDataHandler.cpp
new file mode 100644
index 0000000000..09ba7584a3
--- /dev/null
+++ b/netwerk/protocol/data/nsDataHandler.cpp
@@ -0,0 +1,247 @@
+/* -*- 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 "nsDataChannel.h"
+#include "nsDataHandler.h"
+#include "nsNetCID.h"
+#include "nsError.h"
+#include "nsIOService.h"
+#include "DataChannelChild.h"
+#include "nsSimpleURI.h"
+#include "mozilla/dom/MimeType.h"
+#include "mozilla/StaticPrefs_network.h"
+
+using namespace mozilla;
+
+////////////////////////////////////////////////////////////////////////////////
+
+NS_IMPL_ISUPPORTS(nsDataHandler, nsIProtocolHandler, nsISupportsWeakReference)
+
+nsresult nsDataHandler::Create(const nsIID& aIID, void** aResult) {
+ RefPtr<nsDataHandler> ph = new nsDataHandler();
+ return ph->QueryInterface(aIID, aResult);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// nsIProtocolHandler methods:
+
+NS_IMETHODIMP
+nsDataHandler::GetScheme(nsACString& result) {
+ result.AssignLiteral("data");
+ return NS_OK;
+}
+
+/* static */ nsresult nsDataHandler::CreateNewURI(const nsACString& aSpec,
+ const char* aCharset,
+ nsIURI* aBaseURI,
+ nsIURI** result) {
+ nsCOMPtr<nsIURI> uri;
+ nsAutoCString contentType;
+ bool base64;
+ MOZ_TRY(ParseURI(aSpec, contentType, /* contentCharset = */ nullptr, base64,
+ /* dataBuffer = */ nullptr));
+
+ // Strip whitespace unless this is text, where whitespace is important
+ // Don't strip escaped whitespace though (bug 391951)
+ nsresult rv;
+ if (base64 || (StaticPrefs::network_url_strip_data_url_whitespace() &&
+ strncmp(contentType.get(), "text/", 5) != 0 &&
+ contentType.Find("xml") == kNotFound)) {
+ // it's ascii encoded binary, don't let any spaces in
+ rv = NS_MutateURI(new mozilla::net::nsSimpleURI::Mutator())
+ .Apply(&nsISimpleURIMutator::SetSpecAndFilterWhitespace, aSpec,
+ nullptr)
+ .Finalize(uri);
+ } else {
+ rv = NS_MutateURI(new mozilla::net::nsSimpleURI::Mutator())
+ .SetSpec(aSpec)
+ .Finalize(uri);
+ }
+
+ if (NS_FAILED(rv)) return rv;
+
+ uri.forget(result);
+ return rv;
+}
+
+NS_IMETHODIMP
+nsDataHandler::NewChannel(nsIURI* uri, nsILoadInfo* aLoadInfo,
+ nsIChannel** result) {
+ NS_ENSURE_ARG_POINTER(uri);
+ RefPtr<nsDataChannel> channel;
+ if (XRE_IsParentProcess()) {
+ channel = new nsDataChannel(uri);
+ } else {
+ channel = new mozilla::net::DataChannelChild(uri);
+ }
+
+ // set the loadInfo on the new channel
+ nsresult rv = channel->SetLoadInfo(aLoadInfo);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ channel.forget(result);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDataHandler::AllowPort(int32_t port, const char* scheme, bool* _retval) {
+ // don't override anything.
+ *_retval = false;
+ return NS_OK;
+}
+
+/**
+ * Helper that performs a case insensitive match to find the offset of a given
+ * pattern in a nsACString.
+ * The search is performed starting from the end of the string; if the string
+ * contains more than one match, the rightmost (last) match will be returned.
+ */
+static bool FindOffsetOf(const nsACString& aPattern, const nsACString& aSrc,
+ nsACString::size_type& aOffset) {
+ nsACString::const_iterator begin, end;
+ aSrc.BeginReading(begin);
+ aSrc.EndReading(end);
+ if (!RFindInReadable(aPattern, begin, end,
+ nsCaseInsensitiveCStringComparator)) {
+ return false;
+ }
+
+ // FindInReadable updates |begin| and |end| to the match coordinates.
+ aOffset = nsACString::size_type(begin.get() - aSrc.Data());
+ return true;
+}
+
+nsresult nsDataHandler::ParsePathWithoutRef(
+ const nsACString& aPath, nsCString& aContentType,
+ nsCString* aContentCharset, bool& aIsBase64,
+ nsDependentCSubstring* aDataBuffer) {
+ static constexpr auto kBase64 = "base64"_ns;
+ static constexpr auto kCharset = "charset"_ns;
+
+ aIsBase64 = false;
+
+ // First, find the start of the data
+ int32_t commaIdx = aPath.FindChar(',');
+
+ // This is a hack! When creating a URL using the DOM API we want to ignore
+ // if a comma is missing. But if we're actually loading a data: URI, in which
+ // case aContentCharset is not null, then we want to return an error if a
+ // comma is missing.
+ if (aContentCharset && commaIdx == kNotFound) {
+ return NS_ERROR_MALFORMED_URI;
+ }
+ if (commaIdx == 0 || commaIdx == kNotFound) {
+ // Nothing but data.
+ aContentType.AssignLiteral("text/plain");
+ if (aContentCharset) {
+ aContentCharset->AssignLiteral("US-ASCII");
+ }
+ } else {
+ auto mediaType = Substring(aPath, 0, commaIdx);
+
+ // Determine if the data is base64 encoded.
+ nsACString::size_type base64;
+ if (FindOffsetOf(kBase64, mediaType, base64) && base64 > 0) {
+ nsACString::size_type offset = base64 + kBase64.Length();
+ // Per the RFC 2397 grammar, "base64" MUST be at the end of the
+ // non-data part.
+ //
+ // But we also allow it in between parameters so a subsequent ";"
+ // is ok as well (this deals with *broken* data URIs, see bug
+ // 781693 for an example). Anything after "base64" in the non-data
+ // part will be discarded in this case, however.
+ if (offset == mediaType.Length() || mediaType[offset] == ';' ||
+ mediaType[offset] == ' ') {
+ MOZ_DIAGNOSTIC_ASSERT(base64 > 0, "Did someone remove the check?");
+ // Index is on the first character of matched "base64" so we
+ // move to the preceding character
+ base64--;
+ // Skip any preceding spaces, searching for a semicolon
+ while (base64 > 0 && mediaType[base64] == ' ') {
+ base64--;
+ }
+ if (mediaType[base64] == ';') {
+ aIsBase64 = true;
+ // Trim the base64 part off.
+ mediaType.Rebind(aPath, 0, base64);
+ }
+ }
+ }
+
+ // Skip any leading spaces
+ nsACString::size_type startIndex = 0;
+ while (startIndex < mediaType.Length() && mediaType[startIndex] == ' ') {
+ startIndex++;
+ }
+
+ nsAutoCString mediaTypeBuf;
+ // If the mimetype starts with ';' we assume text/plain
+ if (startIndex < mediaType.Length() && mediaType[startIndex] == ';') {
+ mediaTypeBuf.AssignLiteral("text/plain");
+ mediaTypeBuf.Append(mediaType);
+ mediaType.Rebind(mediaTypeBuf, 0, mediaTypeBuf.Length());
+ }
+
+ // Everything else is content type.
+ if (mozilla::UniquePtr<CMimeType> parsed = CMimeType::Parse(mediaType)) {
+ parsed->GetFullType(aContentType);
+ if (aContentCharset) {
+ parsed->GetParameterValue(kCharset, *aContentCharset);
+ }
+ } else {
+ // Mime Type parsing failed
+ aContentType.AssignLiteral("text/plain");
+ if (aContentCharset) {
+ aContentCharset->AssignLiteral("US-ASCII");
+ }
+ }
+ }
+
+ if (aDataBuffer) {
+ aDataBuffer->Rebind(aPath, commaIdx + 1);
+ }
+
+ return NS_OK;
+}
+
+static inline char ToLower(const char c) {
+ if (c >= 'A' && c <= 'Z') {
+ return char(c + ('a' - 'A'));
+ }
+ return c;
+}
+
+nsresult nsDataHandler::ParseURI(const nsACString& spec, nsCString& contentType,
+ nsCString* contentCharset, bool& isBase64,
+ nsCString* dataBuffer) {
+ static constexpr auto kDataScheme = "data:"_ns;
+
+ // move past "data:"
+ const char* pos = std::search(
+ spec.BeginReading(), spec.EndReading(), kDataScheme.BeginReading(),
+ kDataScheme.EndReading(),
+ [](const char a, const char b) { return ToLower(a) == ToLower(b); });
+ if (pos == spec.EndReading()) {
+ return NS_ERROR_MALFORMED_URI;
+ }
+
+ uint32_t scheme = pos - spec.BeginReading();
+ scheme += kDataScheme.Length();
+
+ // Find the start of the hash ref if present.
+ int32_t hash = spec.FindChar('#', scheme);
+
+ auto pathWithoutRef = Substring(spec, scheme, hash != kNotFound ? hash : -1);
+ nsDependentCSubstring dataRange;
+ nsresult rv = ParsePathWithoutRef(pathWithoutRef, contentType, contentCharset,
+ isBase64, &dataRange);
+ if (NS_SUCCEEDED(rv) && dataBuffer) {
+ if (!dataBuffer->Assign(dataRange, mozilla::fallible)) {
+ rv = NS_ERROR_OUT_OF_MEMORY;
+ }
+ }
+
+ return rv;
+}
diff --git a/netwerk/protocol/data/nsDataHandler.h b/netwerk/protocol/data/nsDataHandler.h
new file mode 100644
index 0000000000..01804ca0ba
--- /dev/null
+++ b/netwerk/protocol/data/nsDataHandler.h
@@ -0,0 +1,56 @@
+/* -*- 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 nsDataHandler_h___
+#define nsDataHandler_h___
+
+#include "nsIProtocolHandler.h"
+#include "nsWeakReference.h"
+
+class nsDataHandler : public nsIProtocolHandler,
+ public nsSupportsWeakReference {
+ virtual ~nsDataHandler() = default;
+
+ public:
+ NS_DECL_ISUPPORTS
+
+ // nsIProtocolHandler methods:
+ NS_DECL_NSIPROTOCOLHANDLER
+
+ // nsDataHandler methods:
+ nsDataHandler() = default;
+
+ static nsresult CreateNewURI(const nsACString& aSpec, const char* aCharset,
+ nsIURI* aBaseURI, nsIURI** result);
+
+ // Define a Create method to be used with a factory:
+ [[nodiscard]] static nsresult Create(const nsIID& aIID, void** aResult);
+
+ // Parse a data: URI and return the individual parts
+ // (the given spec will temporarily be modified but will be returned
+ // to the original before returning)
+ // contentCharset and dataBuffer can be nullptr if they are not needed.
+ [[nodiscard]] static nsresult ParseURI(const nsACString& spec,
+ nsCString& contentType,
+ nsCString* contentCharset,
+ bool& isBase64, nsCString* dataBuffer);
+
+ // Parse the path portion of a data: URI and return the individual parts.
+ //
+ // Note: The path is assumed *not* to have a ref portion.
+ //
+ // @arg aPath The path portion of the spec. Must not have ref portion.
+ // @arg aContentType Out param, will hold the parsed content type.
+ // @arg aContentCharset Optional, will hold the charset if specified.
+ // @arg aIsBase64 Out param, indicates if the data is base64 encoded.
+ // @arg aDataBuffer Optional, will reference the substring in |aPath| that
+ // contains the data portion of the path. No copy is made.
+ [[nodiscard]] static nsresult ParsePathWithoutRef(
+ const nsACString& aPath, nsCString& aContentType,
+ nsCString* aContentCharset, bool& aIsBase64,
+ nsDependentCSubstring* aDataBuffer);
+};
+
+#endif /* nsDataHandler_h___ */
diff --git a/netwerk/protocol/data/nsDataModule.cpp b/netwerk/protocol/data/nsDataModule.cpp
new file mode 100644
index 0000000000..8bcda94362
--- /dev/null
+++ b/netwerk/protocol/data/nsDataModule.cpp
@@ -0,0 +1,15 @@
+/* -*- Mode: C++; tab-width: 4; 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 "nsIGenericFactory.h"
+#include "nsDataHandler.h"
+
+// The list of components we register
+static const nsModuleComponentInfo components[] = {
+ {"Data Protocol Handler", NS_DATAHANDLER_CID,
+ NS_NETWORK_PROTOCOL_CONTRACTID_PREFIX "data", nsDataHandler::Create},
+};
+
+NS_IMPL_NSGETMODULE(nsDataProtocolModule, components)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 15:36:20 +0000