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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 */
/* Unix-specific local file uri parsing */
#include "nsURLHelper.h"
#include "nsEscape.h"
#include "nsIFile.h"
#include "nsNativeCharsetUtils.h"
#include "mozilla/Utf8.h"
using mozilla::IsUtf8;
nsresult net_GetURLSpecFromActualFile(nsIFile* aFile, nsACString& result) {
nsresult rv;
nsAutoCString nativePath, ePath;
nsAutoString path;
rv = aFile->GetNativePath(nativePath);
if (NS_FAILED(rv)) return rv;
// Convert to unicode and back to check correct conversion to native charset
NS_CopyNativeToUnicode(nativePath, path);
NS_CopyUnicodeToNative(path, ePath);
// Use UTF8 version if conversion was successful
if (nativePath == ePath)
CopyUTF16toUTF8(path, ePath);
ePath = nativePath;
nsAutoCString escPath;
constexpr auto prefix = "file://"_ns;
// Escape the path with the directory mask
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) {
// NOTE: See also the implementation in nsURLHelperOSX.cpp,
// which is based on this.
nsresult rv;
nsCOMPtr<nsIFile> localFile;
rv = NS_NewNativeLocalFile(EmptyCString(), true, getter_AddRefs(localFile));
if (NS_FAILED(rv)) return rv;
nsAutoCString directory, fileBaseName, fileExtension, path;
rv = net_ParseFileURL(aURL, directory, fileBaseName, fileExtension);
if (NS_FAILED(rv)) return rv;
if (!directory.IsEmpty()) {
rv = NS_EscapeURL(directory, esc_Directory | esc_AlwaysCopy, path,
if (NS_FAILED(rv)) return rv;
if (!fileBaseName.IsEmpty()) {
rv = NS_EscapeURL(fileBaseName, esc_FileBaseName | esc_AlwaysCopy, path,
if (NS_FAILED(rv)) return rv;
if (!fileExtension.IsEmpty()) {
path += '.';
rv = NS_EscapeURL(fileExtension, esc_FileExtension | esc_AlwaysCopy, path,
if (NS_FAILED(rv)) return rv;
if (path.Length() != strlen(path.get())) return NS_ERROR_FILE_INVALID_PATH;
if (IsUtf8(path)) {
// speed up the start-up where UTF-8 is the native charset
// (e.g. on recent Linux distributions)
if (NS_IsNativeUTF8())
rv = localFile->InitWithNativePath(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;
return NS_OK;