1 files changed, 111 insertions, 0 deletions
diff --git a/netwerk/base/nsURLHelperWin.cpp b/netwerk/base/nsURLHelperWin.cpp
new file mode 100644
index 0000000000..7a4f53978e
--- /dev/null
+++ b/netwerk/base/nsURLHelperWin.cpp
@@ -0,0 +1,111 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=4 sw=2 et cindent: */
+/* 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/. */
+
+/* Windows-specific local file uri parsing */
+#include "nsComponentManagerUtils.h"
+#include "nsURLHelper.h"
+#include "nsEscape.h"
+#include "nsIFile.h"
+#include <windows.h>
+#include "mozilla/StaticPrefs_network.h"
+#include "mozilla/Utf8.h"
+
+using namespace mozilla;
+
+nsresult net_GetURLSpecFromActualFile(nsIFile* aFile, nsACString& result) {
+  nsresult rv;
+  nsAutoString path;
+
+  // construct URL spec from file path
+  rv = aFile->GetPath(path);
+  if (NS_FAILED(rv)) return rv;
+
+  // Replace \ with / to convert to an url
+  path.ReplaceChar(char16_t(0x5Cu), char16_t(0x2Fu));
+
+  nsAutoCString escPath;
+
+  // Windows Desktop paths begin with a drive letter, so need an 'extra'
+  // slash at the begining
+  // C:\Windows =>  file:///C:/Windows
+  constexpr auto prefix = "file:///"_ns;
+
+  // Escape the path with the directory mask
+  NS_ConvertUTF16toUTF8 ePath(path);
+  if (NS_EscapeURL(ePath.get(), -1, esc_Directory + esc_Forced, escPath))
+    escPath.Insert(prefix, 0);
+  else
+    escPath.Assign(prefix + ePath);
+
+  // esc_Directory does not escape the semicolons, so if a filename
+  // contains semicolons we need to manually escape them.
+  // This replacement should be removed in bug #473280
+  escPath.ReplaceSubstring(";", "%3b");
+
+  result = escPath;
+  return NS_OK;
+}
+
+nsresult net_GetFileFromURLSpec(const nsACString& aURL, nsIFile** result) {
+  nsresult rv;
+
+  if (aURL.Length() > StaticPrefs::network_standard_url_max_length()) {
+    return NS_ERROR_MALFORMED_URI;
+  }
+
+  nsCOMPtr<nsIFile> localFile(do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, &rv));
+  if (NS_FAILED(rv)) {
+    NS_ERROR("Only nsIFile supported right now");
+    return rv;
+  }
+
+  const nsACString* specPtr;
+
+  nsAutoCString buf;
+  if (net_NormalizeFileURL(aURL, buf))
+    specPtr = &buf;
+  else
+    specPtr = &aURL;
+
+  nsAutoCString directory, fileBaseName, fileExtension;
+
+  rv = net_ParseFileURL(*specPtr, directory, fileBaseName, fileExtension);
+  if (NS_FAILED(rv)) return rv;
+
+  nsAutoCString path;
+
+  if (!directory.IsEmpty()) {
+    NS_EscapeURL(directory, esc_Directory | esc_AlwaysCopy, path);
+    if (path.Length() > 2 && path.CharAt(2) == '|') path.SetCharAt(':', 2);
+    path.ReplaceChar('/', '\\');
+  }
+  if (!fileBaseName.IsEmpty())
+    NS_EscapeURL(fileBaseName, esc_FileBaseName | esc_AlwaysCopy, path);
+  if (!fileExtension.IsEmpty()) {
+    path += '.';
+    NS_EscapeURL(fileExtension, esc_FileExtension | esc_AlwaysCopy, path);
+  }
+
+  NS_UnescapeURL(path);
+  if (path.Length() != strlen(path.get())) return NS_ERROR_FILE_INVALID_PATH;
+
+  // remove leading '\'
+  if (path.CharAt(0) == '\\') path.Cut(0, 1);
+
+  if (IsUtf8(path)) rv = localFile->InitWithPath(NS_ConvertUTF8toUTF16(path));
+  // XXX In rare cases, a valid UTF-8 string can be valid as a native
+  // encoding (e.g. 0xC5 0x83 is valid both as UTF-8 and Windows-125x).
+  // However, the chance is very low that a meaningful word in a legacy
+  // encoding is valid as UTF-8.
+  else
+    // if path is not in UTF-8, assume it is encoded in the native charset
+    rv = localFile->InitWithNativePath(path);
+
+  if (NS_FAILED(rv)) return rv;
+
+  localFile.forget(result);
+  return NS_OK;
+}