1 files changed, 440 insertions, 0 deletions
diff --git a/xpcom/io/FileDescriptorFile.cpp b/xpcom/io/FileDescriptorFile.cpp
new file mode 100644
index 0000000000..39c4618ef2
--- /dev/null
+++ b/xpcom/io/FileDescriptorFile.cpp
@@ -0,0 +1,440 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 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 "FileDescriptorFile.h"
+
+#include "mozilla/ipc/FileDescriptorUtils.h"
+#include "mozilla/ipc/URIUtils.h"
+#include "mozilla/net/NeckoChild.h"
+#include "nsNetUtil.h"
+#include "nsProxyRelease.h"
+#include "nsThreadUtils.h"
+#include "private/pprio.h"
+#include "SerializedLoadContext.h"
+
+namespace mozilla {
+namespace net {
+
+NS_IMPL_ISUPPORTS(FileDescriptorFile, nsIFile)
+
+LazyLogModule gFDFileLog("FDFile");
+#undef DBG
+#define DBG(...) MOZ_LOG(gFDFileLog, LogLevel::Debug, (__VA_ARGS__))
+
+FileDescriptorFile::FileDescriptorFile(const FileDescriptor& aFD,
+                                       nsIFile* aFile) {
+  MOZ_ASSERT(aFD.IsValid());
+  auto platformHandle = aFD.ClonePlatformHandle();
+  mFD = FileDescriptor(platformHandle.get());
+  mFile = aFile;
+}
+
+FileDescriptorFile::FileDescriptorFile(const FileDescriptorFile& aOther) {
+  auto platformHandle = aOther.mFD.ClonePlatformHandle();
+  mFD = FileDescriptor(platformHandle.get());
+  aOther.mFile->Clone(getter_AddRefs(mFile));
+}
+
+//-----------------------------------------------------------------------------
+// FileDescriptorFile::nsIFile functions that we override logic for
+//-----------------------------------------------------------------------------
+
+NS_IMETHODIMP
+FileDescriptorFile::Clone(nsIFile** aFileOut) {
+  RefPtr<FileDescriptorFile> fdFile = new FileDescriptorFile(*this);
+  fdFile.forget(aFileOut);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::OpenNSPRFileDesc(int32_t aFlags, int32_t aMode,
+                                     PRFileDesc** aRetval) {
+  // Remove optional OS_READAHEAD flag so we test against PR_RDONLY
+  aFlags &= ~nsIFile::OS_READAHEAD;
+
+  // Remove optional/deprecated DELETE_ON_CLOSE flag
+  aFlags &= ~nsIFile::DELETE_ON_CLOSE;
+
+  // All other flags require write access to the file and
+  // this implementation only provides read access.
+  if (aFlags != PR_RDONLY) {
+    DBG("OpenNSPRFileDesc flags error (%" PRIu32 ")\n", aFlags);
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  if (!mFD.IsValid()) {
+    DBG("OpenNSPRFileDesc error: no file descriptor\n");
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  auto platformHandle = mFD.ClonePlatformHandle();
+  *aRetval = PR_ImportFile(PROsfd(platformHandle.release()));
+
+  if (!*aRetval) {
+    DBG("OpenNSPRFileDesc Clone failure\n");
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  return NS_OK;
+}
+
+//-----------------------------------------------------------------------------
+// FileDescriptorFile::nsIFile functions that we delegate to underlying nsIFile
+//-----------------------------------------------------------------------------
+
+nsresult FileDescriptorFile::GetLeafName(nsAString& aLeafName) {
+  return mFile->GetLeafName(aLeafName);
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::GetNativeLeafName(nsACString& aLeafName) {
+  return mFile->GetNativeLeafName(aLeafName);
+}
+
+NS_IMETHODIMP FileDescriptorFile::GetDisplayName(nsAString& aLeafName) {
+  return mFile->GetDisplayName(aLeafName);
+}
+
+nsresult FileDescriptorFile::GetTarget(nsAString& aRetVal) {
+  return mFile->GetTarget(aRetVal);
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::GetNativeTarget(nsACString& aRetVal) {
+  return mFile->GetNativeTarget(aRetVal);
+}
+
+nsresult FileDescriptorFile::GetPath(nsAString& aRetVal) {
+  return mFile->GetPath(aRetVal);
+}
+
+PathString FileDescriptorFile::NativePath() { return mFile->NativePath(); }
+
+NS_IMETHODIMP
+FileDescriptorFile::Equals(nsIFile* aOther, bool* aRetVal) {
+  return mFile->Equals(aOther, aRetVal);
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::Contains(nsIFile* aOther, bool* aRetVal) {
+  return mFile->Contains(aOther, aRetVal);
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::GetParent(nsIFile** aParent) {
+  return mFile->GetParent(aParent);
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::GetPersistentDescriptor(nsACString& aPersistentDescriptor) {
+  return mFile->GetPersistentDescriptor(aPersistentDescriptor);
+}
+
+//-----------------------------------------------------------------------------
+// FileDescriptorFile::nsIFile functions that are not currently supported
+//-----------------------------------------------------------------------------
+
+nsresult FileDescriptorFile::Append(const nsAString& aNode) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::AppendNative(const nsACString& aFragment) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::Normalize() { return NS_ERROR_NOT_IMPLEMENTED; }
+
+NS_IMETHODIMP
+FileDescriptorFile::Create(uint32_t aType, uint32_t aPermissions,
+                           bool aSkipAncestors) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+nsresult FileDescriptorFile::SetLeafName(const nsAString& aLeafName) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::SetNativeLeafName(const nsACString& aLeafName) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+nsresult FileDescriptorFile::InitWithPath(const nsAString& aPath) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::InitWithNativePath(const nsACString& aPath) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::InitWithFile(nsIFile* aFile) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+nsresult FileDescriptorFile::AppendRelativePath(const nsAString& aNode) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::AppendRelativeNativePath(const nsACString& aFragment) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::SetPersistentDescriptor(
+    const nsACString& aPersistentDescriptor) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::GetRelativeDescriptor(nsIFile* aFromFile,
+                                          nsACString& aRetVal) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::SetRelativeDescriptor(nsIFile* aFromFile,
+                                          const nsACString& aRelativeDesc) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::GetRelativePath(nsIFile* aFromFile, nsACString& aRetVal) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::SetRelativePath(nsIFile* aFromFile,
+                                    const nsACString& aRelativePath) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+nsresult FileDescriptorFile::CopyTo(nsIFile* aNewParentDir,
+                                    const nsAString& aNewName) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::CopyToNative(nsIFile* aNewParent,
+                                 const nsACString& aNewName) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+nsresult FileDescriptorFile::CopyToFollowingLinks(nsIFile* aNewParentDir,
+                                                  const nsAString& aNewName) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::CopyToFollowingLinksNative(nsIFile* aNewParent,
+                                               const nsACString& aNewName) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+nsresult FileDescriptorFile::MoveTo(nsIFile* aNewParentDir,
+                                    const nsAString& aNewName) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::MoveToNative(nsIFile* aNewParent,
+                                 const nsACString& aNewName) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::MoveToFollowingLinks(nsIFile* aNewParent,
+                                         const nsAString& aNewName) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::MoveToFollowingLinksNative(nsIFile* aNewParent,
+                                               const nsACString& aNewName) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::RenameTo(nsIFile* aNewParentDir,
+                             const nsAString& aNewName) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::RenameToNative(nsIFile* aNewParentDir,
+                                   const nsACString& aNewName) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::Remove(bool aRecursive) { return NS_ERROR_NOT_IMPLEMENTED; }
+
+NS_IMETHODIMP
+FileDescriptorFile::GetPermissions(uint32_t* aPermissions) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::SetPermissions(uint32_t aPermissions) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::GetPermissionsOfLink(uint32_t* aPermissionsOfLink) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::SetPermissionsOfLink(uint32_t aPermissions) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::GetLastAccessedTime(PRTime* aLastAccessedTime) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::SetLastAccessedTime(PRTime aLastAccessedTime) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::GetLastAccessedTimeOfLink(PRTime* aLastAccessedTime) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::SetLastAccessedTimeOfLink(PRTime aLastAccessedTime) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::GetLastModifiedTime(PRTime* aLastModTime) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::SetLastModifiedTime(PRTime aLastModTime) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::GetLastModifiedTimeOfLink(PRTime* aLastModTimeOfLink) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::SetLastModifiedTimeOfLink(PRTime aLastModTimeOfLink) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::GetCreationTime(PRTime* aCreationTime) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::GetCreationTimeOfLink(PRTime* aCreationTime) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::GetFileSize(int64_t* aFileSize) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::SetFileSize(int64_t aFileSize) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::GetFileSizeOfLink(int64_t* aFileSize) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::Exists(bool* aRetVal) { return NS_ERROR_NOT_IMPLEMENTED; }
+
+NS_IMETHODIMP
+FileDescriptorFile::IsWritable(bool* aRetVal) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::IsReadable(bool* aRetVal) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::IsExecutable(bool* aRetVal) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::IsHidden(bool* aRetVal) { return NS_ERROR_NOT_IMPLEMENTED; }
+
+NS_IMETHODIMP
+FileDescriptorFile::IsDirectory(bool* aRetVal) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::IsFile(bool* aRetVal) { return NS_ERROR_NOT_IMPLEMENTED; }
+
+NS_IMETHODIMP
+FileDescriptorFile::IsSymlink(bool* aRetVal) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::IsSpecial(bool* aRetVal) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::CreateUnique(uint32_t aType, uint32_t aAttributes) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::GetDirectoryEntriesImpl(nsIDirectoryEnumerator** aEntries) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::OpenANSIFileDesc(const char* aMode, FILE** aRetVal) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::Load(PRLibrary** aRetVal) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::GetDiskSpaceAvailable(int64_t* aDiskSpaceAvailable) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::GetDiskCapacity(int64_t* aDiskCapacity) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorFile::Reveal() { return NS_ERROR_NOT_IMPLEMENTED; }
+
+NS_IMETHODIMP
+FileDescriptorFile::Launch() { return NS_ERROR_NOT_IMPLEMENTED; }
+
+}  // namespace net
+}  // namespace mozilla