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/* -*- 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 */
/* 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);
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()) {
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;
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);
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.
// 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;
return NS_OK;